diff options
Diffstat (limited to 'net/mac80211')
-rw-r--r-- | net/mac80211/Kconfig | 33 | ||||
-rw-r--r-- | net/mac80211/Makefile | 21 | ||||
-rw-r--r-- | net/mac80211/aes_ccm.c | 2 | ||||
-rw-r--r-- | net/mac80211/cfg.c | 458 | ||||
-rw-r--r-- | net/mac80211/debugfs.c | 53 | ||||
-rw-r--r-- | net/mac80211/debugfs_key.c | 42 | ||||
-rw-r--r-- | net/mac80211/debugfs_key.h | 11 | ||||
-rw-r--r-- | net/mac80211/debugfs_netdev.c | 218 | ||||
-rw-r--r-- | net/mac80211/debugfs_sta.c | 181 | ||||
-rw-r--r-- | net/mac80211/debugfs_sta.h | 2 | ||||
-rw-r--r-- | net/mac80211/ieee80211_i.h | 525 | ||||
-rw-r--r-- | net/mac80211/iface.c (renamed from net/mac80211/ieee80211_iface.c) | 48 | ||||
-rw-r--r-- | net/mac80211/key.c | 393 | ||||
-rw-r--r-- | net/mac80211/key.h (renamed from net/mac80211/ieee80211_key.h) | 42 | ||||
-rw-r--r-- | net/mac80211/led.c (renamed from net/mac80211/ieee80211_led.c) | 2 | ||||
-rw-r--r-- | net/mac80211/led.h (renamed from net/mac80211/ieee80211_led.h) | 0 | ||||
-rw-r--r-- | net/mac80211/main.c (renamed from net/mac80211/ieee80211.c) | 1061 | ||||
-rw-r--r-- | net/mac80211/mesh.c | 449 | ||||
-rw-r--r-- | net/mac80211/mesh.h | 290 | ||||
-rw-r--r-- | net/mac80211/mesh_hwmp.c | 855 | ||||
-rw-r--r-- | net/mac80211/mesh_pathtbl.c | 516 | ||||
-rw-r--r-- | net/mac80211/mesh_plink.c | 762 | ||||
-rw-r--r-- | net/mac80211/mlme.c (renamed from net/mac80211/ieee80211_sta.c) | 1831 | ||||
-rw-r--r-- | net/mac80211/rate.c (renamed from net/mac80211/ieee80211_rate.c) | 25 | ||||
-rw-r--r-- | net/mac80211/rate.h (renamed from net/mac80211/ieee80211_rate.h) | 44 | ||||
-rw-r--r-- | net/mac80211/rc80211_pid_algo.c | 124 | ||||
-rw-r--r-- | net/mac80211/rc80211_pid_debugfs.c | 2 | ||||
-rw-r--r-- | net/mac80211/rc80211_simple.c | 400 | ||||
-rw-r--r-- | net/mac80211/regdomain.c | 152 | ||||
-rw-r--r-- | net/mac80211/rx.c | 876 | ||||
-rw-r--r-- | net/mac80211/sta_info.c | 698 | ||||
-rw-r--r-- | net/mac80211/sta_info.h | 357 | ||||
-rw-r--r-- | net/mac80211/tkip.c | 70 | ||||
-rw-r--r-- | net/mac80211/tkip.h | 4 | ||||
-rw-r--r-- | net/mac80211/tx.c | 732 | ||||
-rw-r--r-- | net/mac80211/util.c | 172 | ||||
-rw-r--r-- | net/mac80211/wep.c | 40 | ||||
-rw-r--r-- | net/mac80211/wep.h | 10 | ||||
-rw-r--r-- | net/mac80211/wext.c (renamed from net/mac80211/ieee80211_ioctl.c) | 270 | ||||
-rw-r--r-- | net/mac80211/wme.c | 139 | ||||
-rw-r--r-- | net/mac80211/wme.h | 23 | ||||
-rw-r--r-- | net/mac80211/wpa.c | 152 | ||||
-rw-r--r-- | net/mac80211/wpa.h | 24 |
43 files changed, 8764 insertions, 3345 deletions
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig index 45c7c0c..520a518 100644 --- a/net/mac80211/Kconfig +++ b/net/mac80211/Kconfig @@ -32,15 +32,6 @@ config MAC80211_RC_DEFAULT_PID default rate control algorithm. You should choose this unless you know what you are doing. -config MAC80211_RC_DEFAULT_SIMPLE - bool "Simple rate control algorithm" - select MAC80211_RC_SIMPLE - ---help--- - Select the simple rate control as the default rate - control algorithm. Note that this is a non-responsive, - dumb algorithm. You should choose the PID rate control - instead. - config MAC80211_RC_DEFAULT_NONE bool "No default algorithm" depends on EMBEDDED @@ -57,7 +48,6 @@ comment "build the algorithm into mac80211." config MAC80211_RC_DEFAULT string default "pid" if MAC80211_RC_DEFAULT_PID - default "simple" if MAC80211_RC_DEFAULT_SIMPLE default "" config MAC80211_RC_PID @@ -70,16 +60,16 @@ config MAC80211_RC_PID Say Y or M unless you're sure you want to use a different rate control algorithm. -config MAC80211_RC_SIMPLE - tristate "Simple rate control algorithm (DEPRECATED)" +endmenu + +config MAC80211_MESH + bool "Enable mac80211 mesh networking (pre-802.11s) support" + depends on MAC80211 && EXPERIMENTAL ---help--- - This option enables a very simple, non-responsive TX - rate control algorithm. This algorithm is deprecated - and will be removed from the kernel in the near future. - It has been replaced by the PID algorithm. + This options enables support of Draft 802.11s mesh networking. + The implementation is based on Draft 1.08 of the Mesh Networking + amendment. For more information visit http://o11s.org/. - Say N unless you know what you are doing. -endmenu config MAC80211_LEDS bool "Enable LED triggers" @@ -166,3 +156,10 @@ config MAC80211_VERBOSE_PS_DEBUG ---help--- Say Y here to print out verbose powersave mode debug messages. + +config MAC80211_VERBOSE_MPL_DEBUG + bool "Verbose mesh peer link debugging" + depends on MAC80211_DEBUG && MAC80211_MESH + ---help--- + Say Y here to print out verbose mesh peer link + debug messages. diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile index 54f46bc..4e5847f 100644 --- a/net/mac80211/Makefile +++ b/net/mac80211/Makefile @@ -10,16 +10,15 @@ rc-pid-m := rc80211_pid.o # mac80211 objects mac80211-y := \ - ieee80211.o \ - ieee80211_ioctl.o \ + main.o \ + wext.o \ sta_info.o \ wep.o \ wpa.o \ - ieee80211_sta.o \ - ieee80211_iface.o \ - ieee80211_rate.o \ + mlme.o \ + iface.o \ + rate.o \ michael.o \ - regdomain.o \ tkip.o \ aes_ccm.o \ cfg.o \ @@ -29,7 +28,7 @@ mac80211-y := \ util.o \ event.o -mac80211-$(CONFIG_MAC80211_LEDS) += ieee80211_led.o +mac80211-$(CONFIG_MAC80211_LEDS) += led.o mac80211-$(CONFIG_NET_SCHED) += wme.o mac80211-$(CONFIG_MAC80211_DEBUGFS) += \ debugfs.o \ @@ -37,11 +36,15 @@ mac80211-$(CONFIG_MAC80211_DEBUGFS) += \ debugfs_netdev.o \ debugfs_key.o +mac80211-$(CONFIG_MAC80211_MESH) += \ + mesh.o \ + mesh_pathtbl.o \ + mesh_plink.o \ + mesh_hwmp.o + # Build rate control algorithm(s) -CFLAGS_rc80211_simple.o += -DRC80211_SIMPLE_COMPILE CFLAGS_rc80211_pid_algo.o += -DRC80211_PID_COMPILE -mac80211-$(CONFIG_MAC80211_RC_SIMPLE) += rc80211_simple.o mac80211-$(CONFIG_MAC80211_RC_PID) += $(rc-pid-$(CONFIG_MAC80211_RC_PID)) # Modular rate algorithms are assigned to mac80211-m - make separate modules diff --git a/net/mac80211/aes_ccm.c b/net/mac80211/aes_ccm.c index e62fe55..59f1691 100644 --- a/net/mac80211/aes_ccm.c +++ b/net/mac80211/aes_ccm.c @@ -13,7 +13,7 @@ #include <linux/err.h> #include <net/mac80211.h> -#include "ieee80211_key.h" +#include "key.h" #include "aes_ccm.h" diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 22c9619..699d97b 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -14,7 +14,8 @@ #include <net/cfg80211.h> #include "ieee80211_i.h" #include "cfg.h" -#include "ieee80211_rate.h" +#include "rate.h" +#include "mesh.h" static enum ieee80211_if_types nl80211_type_to_mac80211_type(enum nl80211_iftype type) @@ -28,16 +29,26 @@ nl80211_type_to_mac80211_type(enum nl80211_iftype type) return IEEE80211_IF_TYPE_STA; case NL80211_IFTYPE_MONITOR: return IEEE80211_IF_TYPE_MNTR; +#ifdef CONFIG_MAC80211_MESH + case NL80211_IFTYPE_MESH_POINT: + return IEEE80211_IF_TYPE_MESH_POINT; +#endif + case NL80211_IFTYPE_WDS: + return IEEE80211_IF_TYPE_WDS; default: return IEEE80211_IF_TYPE_INVALID; } } static int ieee80211_add_iface(struct wiphy *wiphy, char *name, - enum nl80211_iftype type) + enum nl80211_iftype type, u32 *flags, + struct vif_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); enum ieee80211_if_types itype; + struct net_device *dev; + struct ieee80211_sub_if_data *sdata; + int err; if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) return -ENODEV; @@ -46,7 +57,13 @@ static int ieee80211_add_iface(struct wiphy *wiphy, char *name, if (itype == IEEE80211_IF_TYPE_INVALID) return -EINVAL; - return ieee80211_if_add(local->mdev, name, NULL, itype); + err = ieee80211_if_add(local->mdev, name, &dev, itype, params); + if (err || itype != IEEE80211_IF_TYPE_MNTR || !flags) + return err; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + sdata->u.mntr_flags = *flags; + return 0; } static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex) @@ -69,7 +86,8 @@ static int ieee80211_del_iface(struct wiphy *wiphy, int ifindex) } static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex, - enum nl80211_iftype type) + enum nl80211_iftype type, u32 *flags, + struct vif_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct net_device *dev; @@ -99,6 +117,15 @@ static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex, ieee80211_if_reinit(dev); ieee80211_if_set_type(dev, itype); + if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len) + ieee80211_if_sta_set_mesh_id(&sdata->u.sta, + params->mesh_id_len, + params->mesh_id); + + if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags) + return 0; + + sdata->u.mntr_flags = *flags; return 0; } @@ -109,7 +136,8 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_sub_if_data *sdata; struct sta_info *sta = NULL; enum ieee80211_key_alg alg; - int ret; + struct ieee80211_key *key; + int err; sdata = IEEE80211_DEV_TO_SUB_IF(dev); @@ -128,21 +156,28 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, return -EINVAL; } + key = ieee80211_key_alloc(alg, key_idx, params->key_len, params->key); + if (!key) + return -ENOMEM; + + rcu_read_lock(); + if (mac_addr) { sta = sta_info_get(sdata->local, mac_addr); - if (!sta) - return -ENOENT; + if (!sta) { + ieee80211_key_free(key); + err = -ENOENT; + goto out_unlock; + } } - ret = 0; - if (!ieee80211_key_alloc(sdata, sta, alg, key_idx, - params->key_len, params->key)) - ret = -ENOMEM; + ieee80211_key_link(key, sdata, sta); - if (sta) - sta_info_put(sta); + err = 0; + out_unlock: + rcu_read_unlock(); - return ret; + return err; } static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, @@ -154,27 +189,37 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, sdata = IEEE80211_DEV_TO_SUB_IF(dev); + rcu_read_lock(); + if (mac_addr) { + ret = -ENOENT; + sta = sta_info_get(sdata->local, mac_addr); if (!sta) - return -ENOENT; + goto out_unlock; - ret = 0; - if (sta->key) + if (sta->key) { ieee80211_key_free(sta->key); - else - ret = -ENOENT; + WARN_ON(sta->key); + ret = 0; + } - sta_info_put(sta); - return ret; + goto out_unlock; } - if (!sdata->keys[key_idx]) - return -ENOENT; + if (!sdata->keys[key_idx]) { + ret = -ENOENT; + goto out_unlock; + } ieee80211_key_free(sdata->keys[key_idx]); + WARN_ON(sdata->keys[key_idx]); - return 0; + ret = 0; + out_unlock: + rcu_read_unlock(); + + return ret; } static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, @@ -191,6 +236,8 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, u16 iv16; int err = -ENOENT; + rcu_read_lock(); + if (mac_addr) { sta = sta_info_get(sdata->local, mac_addr); if (!sta) @@ -254,8 +301,7 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, err = 0; out: - if (sta) - sta_info_put(sta); + rcu_read_unlock(); return err; } @@ -265,35 +311,83 @@ static int ieee80211_config_default_key(struct wiphy *wiphy, { struct ieee80211_sub_if_data *sdata; + rcu_read_lock(); + sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_set_default_key(sdata, key_idx); + rcu_read_unlock(); + return 0; } +static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) +{ + struct ieee80211_sub_if_data *sdata = sta->sdata; + + sinfo->filled = STATION_INFO_INACTIVE_TIME | + STATION_INFO_RX_BYTES | + STATION_INFO_TX_BYTES; + + sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); + sinfo->rx_bytes = sta->rx_bytes; + sinfo->tx_bytes = sta->tx_bytes; + + if (ieee80211_vif_is_mesh(&sdata->vif)) { +#ifdef CONFIG_MAC80211_MESH + sinfo->filled |= STATION_INFO_LLID | + STATION_INFO_PLID | + STATION_INFO_PLINK_STATE; + + sinfo->llid = le16_to_cpu(sta->llid); + sinfo->plid = le16_to_cpu(sta->plid); + sinfo->plink_state = sta->plink_state; +#endif + } +} + + +static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, + int idx, u8 *mac, struct station_info *sinfo) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct sta_info *sta; + int ret = -ENOENT; + + rcu_read_lock(); + + sta = sta_info_get_by_idx(local, idx, dev); + if (sta) { + ret = 0; + memcpy(mac, sta->addr, ETH_ALEN); + sta_set_sinfo(sta, sinfo); + } + + rcu_read_unlock(); + + return ret; +} + static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, - u8 *mac, struct station_stats *stats) + u8 *mac, struct station_info *sinfo) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct sta_info *sta; + int ret = -ENOENT; - sta = sta_info_get(local, mac); - if (!sta) - return -ENOENT; + rcu_read_lock(); /* XXX: verify sta->dev == dev */ - stats->filled = STATION_STAT_INACTIVE_TIME | - STATION_STAT_RX_BYTES | - STATION_STAT_TX_BYTES; - - stats->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); - stats->rx_bytes = sta->rx_bytes; - stats->tx_bytes = sta->tx_bytes; + sta = sta_info_get(local, mac); + if (sta) { + ret = 0; + sta_set_sinfo(sta, sinfo); + } - sta_info_put(sta); + rcu_read_unlock(); - return 0; + return ret; } /* @@ -486,8 +580,8 @@ static void ieee80211_send_layer2_update(struct sta_info *sta) msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ - skb->dev = sta->dev; - skb->protocol = eth_type_trans(skb, sta->dev); + skb->dev = sta->sdata->dev; + skb->protocol = eth_type_trans(skb, sta->sdata->dev); memset(skb->cb, 0, sizeof(skb->cb)); netif_rx(skb); } @@ -498,7 +592,14 @@ static void sta_apply_parameters(struct ieee80211_local *local, { u32 rates; int i, j; - struct ieee80211_hw_mode *mode; + struct ieee80211_supported_band *sband; + struct ieee80211_sub_if_data *sdata = sta->sdata; + + /* + * FIXME: updating the flags is racy when this function is + * called from ieee80211_change_station(), this will + * be resolved in a future patch. + */ if (params->station_flags & STATION_FLAG_CHANGED) { sta->flags &= ~WLAN_STA_AUTHORIZED; @@ -514,6 +615,13 @@ static void sta_apply_parameters(struct ieee80211_local *local, sta->flags |= WLAN_STA_WME; } + /* + * FIXME: updating the following information is racy when this + * function is called from ieee80211_change_station(). + * However, all this information should be static so + * maybe we should just reject attemps to change it. + */ + if (params->aid) { sta->aid = params->aid; if (sta->aid > IEEE80211_MAX_AID) @@ -525,15 +633,27 @@ static void sta_apply_parameters(struct ieee80211_local *local, if (params->supported_rates) { rates = 0; - mode = local->oper_hw_mode; + sband = local->hw.wiphy->bands[local->oper_channel->band]; + for (i = 0; i < params->supported_rates_len; i++) { int rate = (params->supported_rates[i] & 0x7f) * 5; - for (j = 0; j < mode->num_rates; j++) { - if (mode->rates[j].rate == rate) + for (j = 0; j < sband->n_bitrates; j++) { + if (sband->bitrates[j].bitrate == rate) rates |= BIT(j); } } - sta->supp_rates = rates; + sta->supp_rates[local->oper_channel->band] = rates; + } + + if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) { + switch (params->plink_action) { + case PLINK_ACTION_OPEN: + mesh_plink_open(sta); + break; + case PLINK_ACTION_BLOCK: + mesh_plink_block(sta); + break; + } } } @@ -543,18 +663,12 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct sta_info *sta; struct ieee80211_sub_if_data *sdata; + int err; /* Prevent a race with changing the rate control algorithm */ if (!netif_running(dev)) return -ENETDOWN; - /* XXX: get sta belonging to dev */ - sta = sta_info_get(local, mac); - if (sta) { - sta_info_put(sta); - return -EEXIST; - } - if (params->vlan) { sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); @@ -564,22 +678,36 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, } else sdata = IEEE80211_DEV_TO_SUB_IF(dev); - sta = sta_info_add(local, dev, mac, GFP_KERNEL); + if (compare_ether_addr(mac, dev->dev_addr) == 0) + return -EINVAL; + + if (is_multicast_ether_addr(mac)) + return -EINVAL; + + sta = sta_info_alloc(sdata, mac, GFP_KERNEL); if (!sta) return -ENOMEM; - sta->dev = sdata->dev; - if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN || - sdata->vif.type == IEEE80211_IF_TYPE_AP) - ieee80211_send_layer2_update(sta); - sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; sta_apply_parameters(local, sta, params); rate_control_rate_init(sta, local); - sta_info_put(sta); + rcu_read_lock(); + + err = sta_info_insert(sta); + if (err) { + /* STA has been freed */ + rcu_read_unlock(); + return err; + } + + if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN || + sdata->vif.type == IEEE80211_IF_TYPE_AP) + ieee80211_send_layer2_update(sta); + + rcu_read_unlock(); return 0; } @@ -587,19 +715,26 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac) { - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; struct sta_info *sta; if (mac) { + rcu_read_lock(); + /* XXX: get sta belonging to dev */ sta = sta_info_get(local, mac); - if (!sta) + if (!sta) { + rcu_read_unlock(); return -ENOENT; + } + + sta_info_unlink(&sta); + rcu_read_unlock(); - sta_info_free(sta); - sta_info_put(sta); + sta_info_destroy(sta); } else - sta_info_flush(local, dev); + sta_info_flush(local, sdata); return 0; } @@ -613,28 +748,203 @@ static int ieee80211_change_station(struct wiphy *wiphy, struct sta_info *sta; struct ieee80211_sub_if_data *vlansdata; + rcu_read_lock(); + /* XXX: get sta belonging to dev */ sta = sta_info_get(local, mac); - if (!sta) + if (!sta) { + rcu_read_unlock(); return -ENOENT; + } - if (params->vlan && params->vlan != sta->dev) { + if (params->vlan && params->vlan != sta->sdata->dev) { vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (vlansdata->vif.type != IEEE80211_IF_TYPE_VLAN || - vlansdata->vif.type != IEEE80211_IF_TYPE_AP) + vlansdata->vif.type != IEEE80211_IF_TYPE_AP) { + rcu_read_unlock(); return -EINVAL; + } - sta->dev = params->vlan; + sta->sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); ieee80211_send_layer2_update(sta); } sta_apply_parameters(local, sta, params); - sta_info_put(sta); + rcu_read_unlock(); + + return 0; +} + +#ifdef CONFIG_MAC80211_MESH +static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, + u8 *dst, u8 *next_hop) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_path *mpath; + struct sta_info *sta; + int err; + + if (!netif_running(dev)) + return -ENETDOWN; + + if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) + return -ENOTSUPP; + + rcu_read_lock(); + sta = sta_info_get(local, next_hop); + if (!sta) { + rcu_read_unlock(); + return -ENOENT; + } + err = mesh_path_add(dst, dev); + if (err) { + rcu_read_unlock(); + return err; + } + + mpath = mesh_path_lookup(dst, dev); + if (!mpath) { + rcu_read_unlock(); + return -ENXIO; + } + mesh_path_fix_nexthop(mpath, sta); + + rcu_read_unlock(); + return 0; +} + +static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, + u8 *dst) +{ + if (dst) + return mesh_path_del(dst, dev); + + mesh_path_flush(dev); + return 0; +} + +static int ieee80211_change_mpath(struct wiphy *wiphy, + struct net_device *dev, + u8 *dst, u8 *next_hop) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_path *mpath; + struct sta_info *sta; + + if (!netif_running(dev)) + return -ENETDOWN; + + if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) + return -ENOTSUPP; + + rcu_read_lock(); + + sta = sta_info_get(local, next_hop); + if (!sta) { + rcu_read_unlock(); + return -ENOENT; + } + + mpath = mesh_path_lookup(dst, dev); + if (!mpath) { + rcu_read_unlock(); + return -ENOENT; + } + + mesh_path_fix_nexthop(mpath, sta); + + rcu_read_unlock(); + return 0; +} + +static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, + struct mpath_info *pinfo) +{ + if (mpath->next_hop) + memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN); + else + memset(next_hop, 0, ETH_ALEN); + + pinfo->filled = MPATH_INFO_FRAME_QLEN | + MPATH_INFO_DSN | + MPATH_INFO_METRIC | + MPATH_INFO_EXPTIME | + MPATH_INFO_DISCOVERY_TIMEOUT | + MPATH_INFO_DISCOVERY_RETRIES | + MPATH_INFO_FLAGS; + + pinfo->frame_qlen = mpath->frame_queue.qlen; + pinfo->dsn = mpath->dsn; + pinfo->metric = mpath->metric; + if (time_before(jiffies, mpath->exp_time)) + pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); + pinfo->discovery_timeout = + jiffies_to_msecs(mpath->discovery_timeout); + pinfo->discovery_retries = mpath->discovery_retries; + pinfo->flags = 0; + if (mpath->flags & MESH_PATH_ACTIVE) + pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; + if (mpath->flags & MESH_PATH_RESOLVING) + pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; + if (mpath->flags & MESH_PATH_DSN_VALID) + pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID; + if (mpath->flags & MESH_PATH_FIXED) + pinfo->flags |= NL80211_MPATH_FLAG_FIXED; + if (mpath->flags & MESH_PATH_RESOLVING) + pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; + + pinfo->flags = mpath->flags; +} + +static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, + u8 *dst, u8 *next_hop, struct mpath_info *pinfo) + +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_path *mpath; + + if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) + return -ENOTSUPP; + + rcu_read_lock(); + mpath = mesh_path_lookup(dst, dev); + if (!mpath) { + rcu_read_unlock(); + return -ENOENT; + } + memcpy(dst, mpath->dst, ETH_ALEN); + mpath_set_pinfo(mpath, next_hop, pinfo); + rcu_read_unlock(); + return 0; +} + +static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, + int idx, u8 *dst, u8 *next_hop, + struct mpath_info *pinfo) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_path *mpath; + + if (sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) + return -ENOTSUPP; + + rcu_read_lock(); + mpath = mesh_path_lookup_by_idx(idx, dev); + if (!mpath) { + rcu_read_unlock(); + return -ENOENT; + } + memcpy(dst, mpath->dst, ETH_ALEN); + mpath_set_pinfo(mpath, next_hop, pinfo); + rcu_read_unlock(); return 0; } +#endif struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, @@ -651,4 +961,12 @@ struct cfg80211_ops mac80211_config_ops = { .del_station = ieee80211_del_station, .change_station = ieee80211_change_station, .get_station = ieee80211_get_station, + .dump_station = ieee80211_dump_station, +#ifdef CONFIG_MAC80211_MESH + .add_mpath = ieee80211_add_mpath, + .del_mpath = ieee80211_del_mpath, + .change_mpath = ieee80211_change_mpath, + .get_mpath = ieee80211_get_mpath, + .dump_mpath = ieee80211_dump_mpath, +#endif }; diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index 60514b2..1cccbfd 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -10,7 +10,7 @@ #include <linux/debugfs.h> #include <linux/rtnetlink.h> #include "ieee80211_i.h" -#include "ieee80211_rate.h" +#include "rate.h" #include "debugfs.h" int mac80211_open_file_generic(struct inode *inode, struct file *file) @@ -19,41 +19,6 @@ int mac80211_open_file_generic(struct inode *inode, struct file *file) return 0; } -static const char *ieee80211_mode_str(int mode) -{ - switch (mode) { - case MODE_IEEE80211A: - return "IEEE 802.11a"; - case MODE_IEEE80211B: - return "IEEE 802.11b"; - case MODE_IEEE80211G: - return "IEEE 802.11g"; - default: - return "UNKNOWN"; - } -} - -static ssize_t modes_read(struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) -{ - struct ieee80211_local *local = file->private_data; - struct ieee80211_hw_mode *mode; - char buf[150], *p = buf; - - /* FIXME: locking! */ - list_for_each_entry(mode, &local->modes_list, list) { - p += scnprintf(p, sizeof(buf)+buf-p, - "%s\n", ieee80211_mode_str(mode->mode)); - } - - return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); -} - -static const struct file_operations modes_ops = { - .read = modes_read, - .open = mac80211_open_file_generic, -}; - #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \ static ssize_t name## _read(struct file *file, char __user *userbuf, \ size_t count, loff_t *ppos) \ @@ -72,7 +37,7 @@ static const struct file_operations name## _ops = { \ }; #define DEBUGFS_ADD(name) \ - local->debugfs.name = debugfs_create_file(#name, 0444, phyd, \ + local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \ local, &name## _ops); #define DEBUGFS_DEL(name) \ @@ -80,10 +45,8 @@ static const struct file_operations name## _ops = { \ local->debugfs.name = NULL; -DEBUGFS_READONLY_FILE(channel, 20, "%d", - local->hw.conf.channel); DEBUGFS_READONLY_FILE(frequency, 20, "%d", - local->hw.conf.freq); + local->hw.conf.channel->center_freq); DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d", local->hw.conf.antenna_sel_tx); DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d", @@ -100,8 +63,6 @@ DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", local->long_retry_limit); DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", local->total_ps_buffered); -DEBUGFS_READONLY_FILE(mode, 20, "%s", - ieee80211_mode_str(local->hw.conf.phymode)); DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x", local->wep_iv & 0xffffff); DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s", @@ -169,7 +130,7 @@ static const struct file_operations stats_ ##name## _ops = { \ }; #define DEBUGFS_STATS_ADD(name) \ - local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\ + local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\ local, &stats_ ##name## _ops); #define DEBUGFS_STATS_DEL(name) \ @@ -294,7 +255,6 @@ void debugfs_hw_add(struct ieee80211_local *local) local->debugfs.stations = debugfs_create_dir("stations", phyd); local->debugfs.keys = debugfs_create_dir("keys", phyd); - DEBUGFS_ADD(channel); DEBUGFS_ADD(frequency); DEBUGFS_ADD(antenna_sel_tx); DEBUGFS_ADD(antenna_sel_rx); @@ -304,9 +264,7 @@ void debugfs_hw_add(struct ieee80211_local *local) DEBUGFS_ADD(short_retry_limit); DEBUGFS_ADD(long_retry_limit); DEBUGFS_ADD(total_ps_buffered); - DEBUGFS_ADD(mode); DEBUGFS_ADD(wep_iv); - DEBUGFS_ADD(modes); statsd = debugfs_create_dir("statistics", phyd); local->debugfs.statistics = statsd; @@ -356,7 +314,6 @@ void debugfs_hw_add(struct ieee80211_local *local) void debugfs_hw_del(struct ieee80211_local *local) { - DEBUGFS_DEL(channel); DEBUGFS_DEL(frequency); DEBUGFS_DEL(antenna_sel_tx); DEBUGFS_DEL(antenna_sel_rx); @@ -366,9 +323,7 @@ void debugfs_hw_del(struct ieee80211_local *local) DEBUGFS_DEL(short_retry_limit); DEBUGFS_DEL(long_retry_limit); DEBUGFS_DEL(total_ps_buffered); - DEBUGFS_DEL(mode); DEBUGFS_DEL(wep_iv); - DEBUGFS_DEL(modes); DEBUGFS_STATS_DEL(transmitted_fragment_count); DEBUGFS_STATS_DEL(multicast_transmitted_frame_count); diff --git a/net/mac80211/debugfs_key.c b/net/mac80211/debugfs_key.c index c881524..879e721 100644 --- a/net/mac80211/debugfs_key.c +++ b/net/mac80211/debugfs_key.c @@ -10,7 +10,7 @@ #include <linux/kobject.h> #include "ieee80211_i.h" -#include "ieee80211_key.h" +#include "key.h" #include "debugfs.h" #include "debugfs_key.h" @@ -184,23 +184,36 @@ KEY_OPS(key); key->debugfs.name = debugfs_create_file(#name, 0400,\ key->debugfs.dir, key, &key_##name##_ops); -void ieee80211_debugfs_key_add(struct ieee80211_local *local, - struct ieee80211_key *key) -{ +void ieee80211_debugfs_key_add(struct ieee80211_key *key) + { static int keycount; - char buf[20]; + char buf[50]; + DECLARE_MAC_BUF(mac); + struct sta_info *sta; - if (!local->debugfs.keys) + if (!key->local->debugfs.keys) return; sprintf(buf, "%d", keycount); + key->debugfs.cnt = keycount; keycount++; key->debugfs.dir = debugfs_create_dir(buf, - local->debugfs.keys); + key->local->debugfs.keys); if (!key->debugfs.dir) return; + rcu_read_lock(); + sta = rcu_dereference(key->sta); + if (sta) + sprintf(buf, "../../stations/%s", print_mac(mac, sta->addr)); + rcu_read_unlock(); + + /* using sta as a boolean is fine outside RCU lock */ + if (sta) + key->debugfs.stalink = + debugfs_create_symlink("station", key->debugfs.dir, buf); + DEBUGFS_ADD(keylen); DEBUGFS_ADD(flags); DEBUGFS_ADD(keyidx); @@ -246,7 +259,7 @@ void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata) if (!sdata->debugfsdir) return; - sprintf(buf, "../keys/%d", sdata->default_key->conf.keyidx); + sprintf(buf, "../keys/%d", sdata->default_key->debugfs.cnt); sdata->debugfs.default_key = debugfs_create_symlink("default_key", sdata->debugfsdir, buf); } @@ -258,19 +271,6 @@ void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata) debugfs_remove(sdata->debugfs.default_key); sdata->debugfs.default_key = NULL; } -void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key, - struct sta_info *sta) -{ - char buf[50]; - DECLARE_MAC_BUF(mac); - - if (!key->debugfs.dir) - return; - - sprintf(buf, "../../stations/%s", print_mac(mac, sta->addr)); - key->debugfs.stalink = - debugfs_create_symlink("station", key->debugfs.dir, buf); -} void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key, struct sta_info *sta) diff --git a/net/mac80211/debugfs_key.h b/net/mac80211/debugfs_key.h index aecfce3..b1a3754 100644 --- a/net/mac80211/debugfs_key.h +++ b/net/mac80211/debugfs_key.h @@ -2,18 +2,14 @@ #define __MAC80211_DEBUGFS_KEY_H #ifdef CONFIG_MAC80211_DEBUGFS -void ieee80211_debugfs_key_add(struct ieee80211_local *local, - struct ieee80211_key *key); +void ieee80211_debugfs_key_add(struct ieee80211_key *key); void ieee80211_debugfs_key_remove(struct ieee80211_key *key); void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata); void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata); -void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key, - struct sta_info *sta); void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key, struct sta_info *sta); #else -static inline void ieee80211_debugfs_key_add(struct ieee80211_local *local, - struct ieee80211_key *key) +static inline void ieee80211_debugfs_key_add(struct ieee80211_key *key) {} static inline void ieee80211_debugfs_key_remove(struct ieee80211_key *key) {} @@ -23,9 +19,6 @@ static inline void ieee80211_debugfs_key_add_default( static inline void ieee80211_debugfs_key_remove_default( struct ieee80211_sub_if_data *sdata) {} -static inline void ieee80211_debugfs_key_sta_link( - struct ieee80211_key *key, struct sta_info *sta) -{} static inline void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key, struct sta_info *sta) {} diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 829872a..e3326d0 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -17,7 +17,7 @@ #include <net/mac80211.h> #include <net/cfg80211.h> #include "ieee80211_i.h" -#include "ieee80211_rate.h" +#include "rate.h" #include "debugfs.h" #include "debugfs_netdev.h" @@ -31,14 +31,39 @@ static ssize_t ieee80211_if_read( ssize_t ret = -EINVAL; read_lock(&dev_base_lock); - if (sdata->dev->reg_state == NETREG_REGISTERED) { + if (sdata->dev->reg_state == NETREG_REGISTERED) ret = (*format)(sdata, buf, sizeof(buf)); - ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret); - } read_unlock(&dev_base_lock); + + if (ret != -EINVAL) + ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret); + return ret; } +#ifdef CONFIG_MAC80211_MESH +static ssize_t ieee80211_if_write( + struct ieee80211_sub_if_data *sdata, + char const __user *userbuf, + size_t count, loff_t *ppos, + int (*format)(struct ieee80211_sub_if_data *, char *)) +{ + char buf[10]; + int buf_size; + + memset(buf, 0x00, sizeof(buf)); + buf_size = min(count, (sizeof(buf)-1)); + if (copy_from_user(buf, userbuf, buf_size)) + return count; + read_lock(&dev_base_lock); + if (sdata->dev->reg_state == NETREG_REGISTERED) + (*format)(sdata, buf); + read_unlock(&dev_base_lock); + + return count; +} +#endif + #define IEEE80211_IF_FMT(name, field, format_string) \ static ssize_t ieee80211_if_fmt_##name( \ const struct ieee80211_sub_if_data *sdata, char *buf, \ @@ -46,6 +71,19 @@ static ssize_t ieee80211_if_fmt_##name( \ { \ return scnprintf(buf, buflen, format_string, sdata->field); \ } +#define IEEE80211_IF_WFMT(name, field, type) \ +static int ieee80211_if_wfmt_##name( \ + struct ieee80211_sub_if_data *sdata, char *buf) \ +{ \ + unsigned long tmp; \ + char *endp; \ + \ + tmp = simple_strtoul(buf, &endp, 0); \ + if ((endp == buf) || ((type)tmp != tmp)) \ + return -EINVAL; \ + sdata->field = tmp; \ + return 0; \ +} #define IEEE80211_IF_FMT_DEC(name, field) \ IEEE80211_IF_FMT(name, field, "%d\n") #define IEEE80211_IF_FMT_HEX(name, field) \ @@ -88,10 +126,37 @@ static const struct file_operations name##_ops = { \ IEEE80211_IF_FMT_##format(name, field) \ __IEEE80211_IF_FILE(name) +#define __IEEE80211_IF_WFILE(name) \ +static ssize_t ieee80211_if_read_##name(struct file *file, \ + char __user *userbuf, \ + size_t count, loff_t *ppos) \ +{ \ + return ieee80211_if_read(file->private_data, \ + userbuf, count, ppos, \ + ieee80211_if_fmt_##name); \ +} \ +static ssize_t ieee80211_if_write_##name(struct file *file, \ + const char __user *userbuf, \ + size_t count, loff_t *ppos) \ +{ \ + return ieee80211_if_write(file->private_data, \ + userbuf, count, ppos, \ + ieee80211_if_wfmt_##name); \ +} \ +static const struct file_operations name##_ops = { \ + .read = ieee80211_if_read_##name, \ + .write = ieee80211_if_write_##name, \ + .open = mac80211_open_file_generic, \ +} + +#define IEEE80211_IF_WFILE(name, field, format, type) \ + IEEE80211_IF_FMT_##format(name, field) \ + IEEE80211_IF_WFMT(name, field, type) \ + __IEEE80211_IF_WFILE(name) + /* common attributes */ IEEE80211_IF_FILE(channel_use, channel_use, DEC); IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC); -IEEE80211_IF_FILE(ieee802_1x_pac, ieee802_1x_pac, DEC); /* STA/IBSS attributes */ IEEE80211_IF_FILE(state, u.sta.state, DEC); @@ -107,6 +172,7 @@ IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC); IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX); IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC); IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC); +IEEE80211_IF_FILE(num_beacons_sta, u.sta.num_beacons, DEC); static ssize_t ieee80211_if_fmt_flags( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) @@ -140,15 +206,50 @@ __IEEE80211_IF_FILE(num_buffered_multicast); /* WDS attributes */ IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC); +#ifdef CONFIG_MAC80211_MESH +/* Mesh stats attributes */ +IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC); +IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC); +IEEE80211_IF_FILE(dropped_frames_no_route, + u.sta.mshstats.dropped_frames_no_route, DEC); +IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC); + +/* Mesh parameters */ +IEEE80211_IF_WFILE(dot11MeshMaxRetries, + u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8); +IEEE80211_IF_WFILE(dot11MeshRetryTimeout, + u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16); +IEEE80211_IF_WFILE(dot11MeshConfirmTimeout, + u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16); +IEEE80211_IF_WFILE(dot11MeshHoldingTimeout, + u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16); +IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8); +IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, u8); +IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks, + u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16); +IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout, + u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32); +IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval, + u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16); +IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime, + u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16); +IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries, + u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8); +IEEE80211_IF_WFILE(path_refresh_time, + u.sta.mshcfg.path_refresh_time, DEC, u32); +IEEE80211_IF_WFILE(min_discovery_timeout, + u.sta.mshcfg.min_discovery_timeout, DEC, u16); +#endif + + #define DEBUGFS_ADD(name, type)\ - sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\ + sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\ sdata->debugfsdir, sdata, &name##_ops); static void add_sta_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(channel_use, sta); DEBUGFS_ADD(drop_unencrypted, sta); - DEBUGFS_ADD(ieee802_1x_pac, sta); DEBUGFS_ADD(state, sta); DEBUGFS_ADD(bssid, sta); DEBUGFS_ADD(prev_bssid, sta); @@ -163,13 +264,13 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata) DEBUGFS_ADD(auth_alg, sta); DEBUGFS_ADD(auth_transaction, sta); DEBUGFS_ADD(flags, sta); + DEBUGFS_ADD(num_beacons_sta, sta); } static void add_ap_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(channel_use, ap); DEBUGFS_ADD(drop_unencrypted, ap); - DEBUGFS_ADD(ieee802_1x_pac, ap); DEBUGFS_ADD(num_sta_ps, ap); DEBUGFS_ADD(dtim_count, ap); DEBUGFS_ADD(num_beacons, ap); @@ -182,7 +283,6 @@ static void add_wds_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(channel_use, wds); DEBUGFS_ADD(drop_unencrypted, wds); - DEBUGFS_ADD(ieee802_1x_pac, wds); DEBUGFS_ADD(peer, wds); } @@ -190,19 +290,63 @@ static void add_vlan_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_ADD(channel_use, vlan); DEBUGFS_ADD(drop_unencrypted, vlan); - DEBUGFS_ADD(ieee802_1x_pac, vlan); } static void add_monitor_files(struct ieee80211_sub_if_data *sdata) { } +#ifdef CONFIG_MAC80211_MESH +#define MESHSTATS_ADD(name)\ + sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\ + sdata->mesh_stats_dir, sdata, &name##_ops); + +static void add_mesh_stats(struct ieee80211_sub_if_data *sdata) +{ + sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats", + sdata->debugfsdir); + MESHSTATS_ADD(fwded_frames); + MESHSTATS_ADD(dropped_frames_ttl); + MESHSTATS_ADD(dropped_frames_no_route); + MESHSTATS_ADD(estab_plinks); +} + +#define MESHPARAMS_ADD(name)\ + sdata->mesh_config.name = debugfs_create_file(#name, 0600,\ + sdata->mesh_config_dir, sdata, &name##_ops); + +static void add_mesh_config(struct ieee80211_sub_if_data *sdata) +{ + sdata->mesh_config_dir = debugfs_create_dir("mesh_config", + sdata->debugfsdir); + MESHPARAMS_ADD(dot11MeshMaxRetries); + MESHPARAMS_ADD(dot11MeshRetryTimeout); + MESHPARAMS_ADD(dot11MeshConfirmTimeout); + MESHPARAMS_ADD(dot11MeshHoldingTimeout); + MESHPARAMS_ADD(dot11MeshTTL); + MESHPARAMS_ADD(auto_open_plinks); + MESHPARAMS_ADD(dot11MeshMaxPeerLinks); + MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); + MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); + MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); + MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); + MESHPARAMS_ADD(path_refresh_time); + MESHPARAMS_ADD(min_discovery_timeout); +} +#endif + static void add_files(struct ieee80211_sub_if_data *sdata) { if (!sdata->debugfsdir) return; switch (sdata->vif.type) { + case IEEE80211_IF_TYPE_MESH_POINT: +#ifdef CONFIG_MAC80211_MESH + add_mesh_stats(sdata); + add_mesh_config(sdata); +#endif + /* fall through */ case IEEE80211_IF_TYPE_STA: case IEEE80211_IF_TYPE_IBSS: add_sta_files(sdata); @@ -234,7 +378,6 @@ static void del_sta_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_DEL(channel_use, sta); DEBUGFS_DEL(drop_unencrypted, sta); - DEBUGFS_DEL(ieee802_1x_pac, sta); DEBUGFS_DEL(state, sta); DEBUGFS_DEL(bssid, sta); DEBUGFS_DEL(prev_bssid, sta); @@ -249,13 +392,13 @@ static void del_sta_files(struct ieee80211_sub_if_data *sdata) DEBUGFS_DEL(auth_alg, sta); DEBUGFS_DEL(auth_transaction, sta); DEBUGFS_DEL(flags, sta); + DEBUGFS_DEL(num_beacons_sta, sta); } static void del_ap_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_DEL(channel_use, ap); DEBUGFS_DEL(drop_unencrypted, ap); - DEBUGFS_DEL(ieee802_1x_pac, ap); DEBUGFS_DEL(num_sta_ps, ap); DEBUGFS_DEL(dtim_count, ap); DEBUGFS_DEL(num_beacons, ap); @@ -268,7 +411,6 @@ static void del_wds_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_DEL(channel_use, wds); DEBUGFS_DEL(drop_unencrypted, wds); - DEBUGFS_DEL(ieee802_1x_pac, wds); DEBUGFS_DEL(peer, wds); } @@ -276,19 +418,67 @@ static void del_vlan_files(struct ieee80211_sub_if_data *sdata) { DEBUGFS_DEL(channel_use, vlan); DEBUGFS_DEL(drop_unencrypted, vlan); - DEBUGFS_DEL(ieee802_1x_pac, vlan); } static void del_monitor_files(struct ieee80211_sub_if_data *sdata) { } +#ifdef CONFIG_MAC80211_MESH +#define MESHSTATS_DEL(name) \ + do { \ + debugfs_remove(sdata->mesh_stats.name); \ + sdata->mesh_stats.name = NULL; \ + } while (0) + +static void del_mesh_stats(struct ieee80211_sub_if_data *sdata) +{ + MESHSTATS_DEL(fwded_frames); + MESHSTATS_DEL(dropped_frames_ttl); + MESHSTATS_DEL(dropped_frames_no_route); + MESHSTATS_DEL(estab_plinks); + debugfs_remove(sdata->mesh_stats_dir); + sdata->mesh_stats_dir = NULL; +} + +#define MESHPARAMS_DEL(name) \ + do { \ + debugfs_remove(sdata->mesh_config.name); \ + sdata->mesh_config.name = NULL; \ + } while (0) + +static void del_mesh_config(struct ieee80211_sub_if_data *sdata) +{ + MESHPARAMS_DEL(dot11MeshMaxRetries); + MESHPARAMS_DEL(dot11MeshRetryTimeout); + MESHPARAMS_DEL(dot11MeshConfirmTimeout); + MESHPARAMS_DEL(dot11MeshHoldingTimeout); + MESHPARAMS_DEL(dot11MeshTTL); + MESHPARAMS_DEL(auto_open_plinks); + MESHPARAMS_DEL(dot11MeshMaxPeerLinks); + MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout); + MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval); + MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime); + MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries); + MESHPARAMS_DEL(path_refresh_time); + MESHPARAMS_DEL(min_discovery_timeout); + debugfs_remove(sdata->mesh_config_dir); + sdata->mesh_config_dir = NULL; +} +#endif + static void del_files(struct ieee80211_sub_if_data *sdata, int type) { if (!sdata->debugfsdir) return; switch (type) { + case IEEE80211_IF_TYPE_MESH_POINT: +#ifdef CONFIG_MAC80211_MESH + del_mesh_stats(sdata); + del_mesh_config(sdata); +#endif + /* fall through */ case IEEE80211_IF_TYPE_STA: case IEEE80211_IF_TYPE_IBSS: del_sta_files(sdata); diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c index 8f5944c..6d47a1d 100644 --- a/net/mac80211/debugfs_sta.c +++ b/net/mac80211/debugfs_sta.c @@ -33,25 +33,16 @@ static ssize_t sta_ ##name## _read(struct file *file, \ #define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n") #define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n") -#define STA_READ_RATE(name, field) \ -static ssize_t sta_##name##_read(struct file *file, \ - char __user *userbuf, \ - size_t count, loff_t *ppos) \ -{ \ - struct sta_info *sta = file->private_data; \ - struct ieee80211_local *local = wdev_priv(sta->dev->ieee80211_ptr);\ - struct ieee80211_hw_mode *mode = local->oper_hw_mode; \ - char buf[20]; \ - int res = scnprintf(buf, sizeof(buf), "%d\n", \ - (sta->field >= 0 && \ - sta->field < mode->num_rates) ? \ - mode->rates[sta->field].rate : -1); \ - return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ +#define STA_OPS(name) \ +static const struct file_operations sta_ ##name## _ops = { \ + .read = sta_##name##_read, \ + .open = mac80211_open_file_generic, \ } -#define STA_OPS(name) \ +#define STA_OPS_WR(name) \ static const struct file_operations sta_ ##name## _ops = { \ .read = sta_##name##_read, \ + .write = sta_##name##_write, \ .open = mac80211_open_file_generic, \ } @@ -60,7 +51,7 @@ static const struct file_operations sta_ ##name## _ops = { \ STA_OPS(name) STA_FILE(aid, aid, D); -STA_FILE(dev, dev->name, S); +STA_FILE(dev, sdata->dev->name, S); STA_FILE(rx_packets, rx_packets, LU); STA_FILE(tx_packets, tx_packets, LU); STA_FILE(rx_bytes, rx_bytes, LU); @@ -70,27 +61,23 @@ STA_FILE(rx_fragments, rx_fragments, LU); STA_FILE(rx_dropped, rx_dropped, LU); STA_FILE(tx_fragments, tx_fragments, LU); STA_FILE(tx_filtered, tx_filtered_count, LU); -STA_FILE(txrate, txrate, RATE); -STA_FILE(last_txrate, last_txrate, RATE); STA_FILE(tx_retry_failed, tx_retry_failed, LU); STA_FILE(tx_retry_count, tx_retry_count, LU); STA_FILE(last_rssi, last_rssi, D); STA_FILE(last_signal, last_signal, D); STA_FILE(last_noise, last_noise, D); STA_FILE(channel_use, channel_use, D); -STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D); +STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU); static ssize_t sta_flags_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { char buf[100]; struct sta_info *sta = file->private_data; - int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s", + int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s", sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "", sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "", sta->flags & WLAN_STA_PS ? "PS\n" : "", - sta->flags & WLAN_STA_TIM ? "TIM\n" : "", - sta->flags & WLAN_STA_PERM ? "PERM\n" : "", sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "", sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "", sta->flags & WLAN_STA_WME ? "WME\n" : "", @@ -111,31 +98,6 @@ static ssize_t sta_num_ps_buf_frames_read(struct file *file, } STA_OPS(num_ps_buf_frames); -static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) -{ - char buf[100]; - struct sta_info *sta = file->private_data; - int res = scnprintf(buf, sizeof(buf), "%d %d %d\n", - sta->last_ack_rssi[0], - sta->last_ack_rssi[1], - sta->last_ack_rssi[2]); - return simple_read_from_buffer(userbuf, count, ppos, buf, res); -} -STA_OPS(last_ack_rssi); - -static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf, - size_t count, loff_t *ppos) -{ - char buf[20]; - struct sta_info *sta = file->private_data; - int res = scnprintf(buf, sizeof(buf), "%d\n", - sta->last_ack ? - jiffies_to_msecs(jiffies - sta->last_ack) : -1); - return simple_read_from_buffer(userbuf, count, ppos, buf, res); -} -STA_OPS(last_ack_ms); - static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { @@ -191,8 +153,120 @@ static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf, STA_OPS(wme_tx_queue); #endif +static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) +{ + char buf[768], *p = buf; + int i; + struct sta_info *sta = file->private_data; + p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n"); + p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n " + "TIDs info is: \n TID :", + (sta->ampdu_mlme.dialog_token_allocator + 1)); + for (i = 0; i < STA_TID_NUM; i++) + p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i); + + p += scnprintf(p, sizeof(buf)+buf-p, "\n RX :"); + for (i = 0; i < STA_TID_NUM; i++) + p += scnprintf(p, sizeof(buf)+buf-p, "%5d", + sta->ampdu_mlme.tid_state_rx[i]); + + p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:"); + for (i = 0; i < STA_TID_NUM; i++) + p += scnprintf(p, sizeof(buf)+buf-p, "%5d", + sta->ampdu_mlme.tid_state_rx[i]? + sta->ampdu_mlme.tid_rx[i]->dialog_token : 0); + + p += scnprintf(p, sizeof(buf)+buf-p, "\n TX :"); + for (i = 0; i < STA_TID_NUM; i++) + p += scnprintf(p, sizeof(buf)+buf-p, "%5d", + sta->ampdu_mlme.tid_state_tx[i]); + + p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:"); + for (i = 0; i < STA_TID_NUM; i++) + p += scnprintf(p, sizeof(buf)+buf-p, "%5d", + sta->ampdu_mlme.tid_state_tx[i]? + sta->ampdu_mlme.tid_tx[i]->dialog_token : 0); + + p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :"); + for (i = 0; i < STA_TID_NUM; i++) + p += scnprintf(p, sizeof(buf)+buf-p, "%5d", + sta->ampdu_mlme.tid_state_tx[i]? + sta->ampdu_mlme.tid_tx[i]->ssn : 0); + + p += scnprintf(p, sizeof(buf)+buf-p, "\n"); + + return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); +} + +static ssize_t sta_agg_status_write(struct file *file, + const char __user *user_buf, size_t count, loff_t *ppos) +{ + struct sta_info *sta = file->private_data; + struct net_device *dev = sta->sdata->dev; + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_hw *hw = &local->hw; + u8 *da = sta->addr; + static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0}; + static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1}; + char *endp; + char buf[32]; + int buf_size, rs; + unsigned int tid_num; + char state[4]; + + memset(buf, 0x00, sizeof(buf)); + buf_size = min(count, (sizeof(buf)-1)); + if (copy_from_user(buf, user_buf, buf_size)) + return -EFAULT; + + tid_num = simple_strtoul(buf, &endp, 0); + if (endp == buf) + return -EINVAL; + + if ((tid_num >= 100) && (tid_num <= 115)) { + /* toggle Rx aggregation command */ + tid_num = tid_num - 100; + if (tid_static_rx[tid_num] == 1) { + strcpy(state, "off "); + ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0, + WLAN_REASON_QSTA_REQUIRE_SETUP); + sta->ampdu_mlme.tid_state_rx[tid_num] |= + HT_AGG_STATE_DEBUGFS_CTL; + tid_static_rx[tid_num] = 0; + } else { + strcpy(state, "on "); + sta->ampdu_mlme.tid_state_rx[tid_num] &= + ~HT_AGG_STATE_DEBUGFS_CTL; + tid_static_rx[tid_num] = 1; + } + printk(KERN_DEBUG "debugfs - try switching tid %u %s\n", + tid_num, state); + } else if ((tid_num >= 0) && (tid_num <= 15)) { + /* toggle Tx aggregation command */ + if (tid_static_tx[tid_num] == 0) { + strcpy(state, "on "); + rs = ieee80211_start_tx_ba_session(hw, da, tid_num); + if (rs == 0) + tid_static_tx[tid_num] = 1; + } else { + strcpy(state, "off"); + rs = ieee80211_stop_tx_ba_session(hw, da, tid_num, 1); + if (rs == 0) + tid_static_tx[tid_num] = 0; + } + printk(KERN_DEBUG "debugfs - switching tid %u %s, return=%d\n", + tid_num, state, rs); + } + + return count; +} +STA_OPS_WR(agg_status); + #define DEBUGFS_ADD(name) \ - sta->debugfs.name = debugfs_create_file(#name, 0444, \ + sta->debugfs.name = debugfs_create_file(#name, 0400, \ sta->debugfs.dir, sta, &sta_ ##name## _ops); #define DEBUGFS_DEL(name) \ @@ -203,12 +277,13 @@ STA_OPS(wme_tx_queue); void ieee80211_sta_debugfs_add(struct sta_info *sta) { struct dentry *stations_dir = sta->local->debugfs.stations; - DECLARE_MAC_BUF(mac); + DECLARE_MAC_BUF(mbuf); + u8 *mac; if (!stations_dir) return; - print_mac(mac, sta->addr); + mac = print_mac(mbuf, sta->addr); sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); if (!sta->debugfs.dir) @@ -216,28 +291,26 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta) DEBUGFS_ADD(flags); DEBUGFS_ADD(num_ps_buf_frames); - DEBUGFS_ADD(last_ack_rssi); - DEBUGFS_ADD(last_ack_ms); DEBUGFS_ADD(inactive_ms); DEBUGFS_ADD(last_seq_ctrl); #ifdef CONFIG_MAC80211_DEBUG_COUNTERS DEBUGFS_ADD(wme_rx_queue); DEBUGFS_ADD(wme_tx_queue); #endif + DEBUGFS_ADD(agg_status); } void ieee80211_sta_debugfs_remove(struct sta_info *sta) { DEBUGFS_DEL(flags); DEBUGFS_DEL(num_ps_buf_frames); - DEBUGFS_DEL(last_ack_rssi); - DEBUGFS_DEL(last_ack_ms); DEBUGFS_DEL(inactive_ms); DEBUGFS_DEL(last_seq_ctrl); #ifdef CONFIG_MAC80211_DEBUG_COUNTERS DEBUGFS_DEL(wme_rx_queue); DEBUGFS_DEL(wme_tx_queue); #endif + DEBUGFS_DEL(agg_status); debugfs_remove(sta->debugfs.dir); sta->debugfs.dir = NULL; diff --git a/net/mac80211/debugfs_sta.h b/net/mac80211/debugfs_sta.h index 574a1cd..8b60890 100644 --- a/net/mac80211/debugfs_sta.h +++ b/net/mac80211/debugfs_sta.h @@ -1,6 +1,8 @@ #ifndef __MAC80211_DEBUGFS_STA_H #define __MAC80211_DEBUGFS_STA_H +#include "sta_info.h" + #ifdef CONFIG_MAC80211_DEBUGFS void ieee80211_sta_debugfs_add(struct sta_info *sta); void ieee80211_sta_debugfs_remove(struct sta_info *sta); diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 72ecbf7..8e53ce7 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -23,7 +23,7 @@ #include <linux/spinlock.h> #include <linux/etherdevice.h> #include <net/wireless.h> -#include "ieee80211_key.h" +#include "key.h" #include "sta_info.h" /* ieee80211.o internal definitions, etc. These are not included into @@ -35,9 +35,9 @@ #define WLAN_FC_DATA_PRESENT(fc) (((fc) & 0x4c) == 0x08) -struct ieee80211_local; +#define IEEE80211_FC(type, subtype) cpu_to_le16(type | subtype) -#define IEEE80211_ALIGN32_PAD(a) ((4 - ((a) & 3)) & 3) +struct ieee80211_local; /* Maximum number of broadcast/multicast frames to buffer when some of the * associated stations are using power saving. */ @@ -73,14 +73,14 @@ struct ieee80211_fragment_entry { struct ieee80211_sta_bss { struct list_head list; struct ieee80211_sta_bss *hnext; + size_t ssid_len; + atomic_t users; u8 bssid[ETH_ALEN]; u8 ssid[IEEE80211_MAX_SSID_LEN]; - size_t ssid_len; u16 capability; /* host byte order */ - int hw_mode; - int channel; + enum ieee80211_band band; int freq; int rssi, signal, noise; u8 *wpa_ie; @@ -91,13 +91,18 @@ struct ieee80211_sta_bss { size_t wmm_ie_len; u8 *ht_ie; size_t ht_ie_len; +#ifdef CONFIG_MAC80211_MESH + u8 *mesh_id; + size_t mesh_id_len; + u8 *mesh_cfg; +#endif #define IEEE80211_MAX_SUPP_RATES 32 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; size_t supp_rates_len; - int beacon_int; u64 timestamp; + int beacon_int; - int probe_resp; + bool probe_resp; unsigned long last_update; /* during assocation, we save an ERP value from a probe response so @@ -108,56 +113,98 @@ struct ieee80211_sta_bss { u8 erp_value; }; +static inline u8 *bss_mesh_cfg(struct ieee80211_sta_bss *bss) +{ +#ifdef CONFIG_MAC80211_MESH + return bss->mesh_cfg; +#endif + return NULL; +} -typedef enum { - TXRX_CONTINUE, TXRX_DROP, TXRX_QUEUED -} ieee80211_txrx_result; +static inline u8 *bss_mesh_id(struct ieee80211_sta_bss *bss) +{ +#ifdef CONFIG_MAC80211_MESH + return bss->mesh_id; +#endif + return NULL; +} -/* flags used in struct ieee80211_txrx_data.flags */ -/* whether the MSDU was fragmented */ -#define IEEE80211_TXRXD_FRAGMENTED BIT(0) -#define IEEE80211_TXRXD_TXUNICAST BIT(1) -#define IEEE80211_TXRXD_TXPS_BUFFERED BIT(2) -#define IEEE80211_TXRXD_TXPROBE_LAST_FRAG BIT(3) -#define IEEE80211_TXRXD_RXIN_SCAN BIT(4) -/* frame is destined to interface currently processed (incl. multicast frames) */ -#define IEEE80211_TXRXD_RXRA_MATCH BIT(5) -#define IEEE80211_TXRXD_TX_INJECTED BIT(6) -#define IEEE80211_TXRXD_RX_AMSDU BIT(7) -struct ieee80211_txrx_data { +static inline u8 bss_mesh_id_len(struct ieee80211_sta_bss *bss) +{ +#ifdef CONFIG_MAC80211_MESH + return bss->mesh_id_len; +#endif + return 0; +} + + +typedef unsigned __bitwise__ ieee80211_tx_result; +#define TX_CONTINUE ((__force ieee80211_tx_result) 0u) +#define TX_DROP ((__force ieee80211_tx_result) 1u) +#define TX_QUEUED ((__force ieee80211_tx_result) 2u) + +#define IEEE80211_TX_FRAGMENTED BIT(0) +#define IEEE80211_TX_UNICAST BIT(1) +#define IEEE80211_TX_PS_BUFFERED BIT(2) +#define IEEE80211_TX_PROBE_LAST_FRAG BIT(3) +#define IEEE80211_TX_INJECTED BIT(4) + +struct ieee80211_tx_data { struct sk_buff *skb; struct net_device *dev; struct ieee80211_local *local; struct ieee80211_sub_if_data *sdata; struct sta_info *sta; + struct ieee80211_key *key; + + struct ieee80211_tx_control *control; + struct ieee80211_channel *channel; + struct ieee80211_rate *rate; + /* use this rate (if set) for last fragment; rate can + * be set to lower rate for the first fragments, e.g., + * when using CTS protection with IEEE 802.11g. */ + struct ieee80211_rate *last_frag_rate; + + /* Extra fragments (in addition to the first fragment + * in skb) */ + struct sk_buff **extra_frag; + int num_extra_frag; + u16 fc, ethertype; + unsigned int flags; +}; + + +typedef unsigned __bitwise__ ieee80211_rx_result; +#define RX_CONTINUE ((__force ieee80211_rx_result) 0u) +#define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) +#define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) +#define RX_QUEUED ((__force ieee80211_rx_result) 3u) + +#define IEEE80211_RX_IN_SCAN BIT(0) +/* frame is destined to interface currently processed (incl. multicast frames) */ +#define IEEE80211_RX_RA_MATCH BIT(1) +#define IEEE80211_RX_AMSDU BIT(2) +#define IEEE80211_RX_CMNTR_REPORTED BIT(3) +#define IEEE80211_RX_FRAGMENTED BIT(4) + +struct ieee80211_rx_data { + struct sk_buff *skb; + struct net_device *dev; + struct ieee80211_local *local; + struct ieee80211_sub_if_data *sdata; + struct sta_info *sta; struct ieee80211_key *key; + struct ieee80211_rx_status *status; + struct ieee80211_rate *rate; + + u16 fc, ethertype; unsigned int flags; - union { - struct { - struct ieee80211_tx_control *control; - struct ieee80211_hw_mode *mode; - struct ieee80211_rate *rate; - /* use this rate (if set) for last fragment; rate can - * be set to lower rate for the first fragments, e.g., - * when using CTS protection with IEEE 802.11g. */ - struct ieee80211_rate *last_frag_rate; - int last_frag_hwrate; - - /* Extra fragments (in addition to the first fragment - * in skb) */ - int num_extra_frag; - struct sk_buff **extra_frag; - } tx; - struct { - struct ieee80211_rx_status *status; - int sent_ps_buffered; - int queue; - int load; - u32 tkip_iv32; - u16 tkip_iv16; - } rx; - } u; + int sent_ps_buffered; + int queue; + int load; + u32 tkip_iv32; + u16 tkip_iv16; }; /* flags used in struct ieee80211_tx_packet_data.flags */ @@ -165,6 +212,7 @@ struct ieee80211_txrx_data { #define IEEE80211_TXPD_DO_NOT_ENCRYPT BIT(1) #define IEEE80211_TXPD_REQUEUE BIT(2) #define IEEE80211_TXPD_EAPOL_FRAME BIT(3) +#define IEEE80211_TXPD_AMPDU BIT(4) /* Stored in sk_buff->cb */ struct ieee80211_tx_packet_data { int ifindex; @@ -176,20 +224,12 @@ struct ieee80211_tx_packet_data { struct ieee80211_tx_stored_packet { struct ieee80211_tx_control control; struct sk_buff *skb; - int num_extra_frag; struct sk_buff **extra_frag; - int last_frag_rateidx; - int last_frag_hwrate; struct ieee80211_rate *last_frag_rate; + int num_extra_frag; unsigned int last_frag_rate_ctrl_probe; }; -typedef ieee80211_txrx_result (*ieee80211_tx_handler) -(struct ieee80211_txrx_data *tx); - -typedef ieee80211_txrx_result (*ieee80211_rx_handler) -(struct ieee80211_txrx_data *rx); - struct beacon_data { u8 *head, *tail; int head_len, tail_len; @@ -206,10 +246,10 @@ struct ieee80211_if_ap { /* yes, this looks ugly, but guarantees that we can later use * bitmap_empty :) - * NB: don't ever use set_bit, use bss_tim_set/bss_tim_clear! */ + * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]; - atomic_t num_sta_ps; /* number of stations in PS mode */ struct sk_buff_head ps_bc_buf; + atomic_t num_sta_ps; /* number of stations in PS mode */ int dtim_count; int force_unicast_rateidx; /* forced TX rateidx for unicast frames */ int max_ratectrl_rateidx; /* max TX rateidx for rate control */ @@ -217,8 +257,8 @@ struct ieee80211_if_ap { }; struct ieee80211_if_wds { - u8 remote_addr[ETH_ALEN]; struct sta_info *sta; + u8 remote_addr[ETH_ALEN]; }; struct ieee80211_if_vlan { @@ -226,6 +266,41 @@ struct ieee80211_if_vlan { struct list_head list; }; +struct mesh_stats { + __u32 fwded_frames; /* Mesh forwarded frames */ + __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ + __u32 dropped_frames_no_route; /* Not transmitted, no route found */ + atomic_t estab_plinks; +}; + +#define PREQ_Q_F_START 0x1 +#define PREQ_Q_F_REFRESH 0x2 +struct mesh_preq_queue { + struct list_head list; + u8 dst[ETH_ALEN]; + u8 flags; +}; + +struct mesh_config { + /* Timeouts in ms */ + /* Mesh plink management parameters */ + u16 dot11MeshRetryTimeout; + u16 dot11MeshConfirmTimeout; + u16 dot11MeshHoldingTimeout; + u16 dot11MeshMaxPeerLinks; + u8 dot11MeshMaxRetries; + u8 dot11MeshTTL; + bool auto_open_plinks; + /* HWMP parameters */ + u8 dot11MeshHWMPmaxPREQretries; + u32 path_refresh_time; + u16 min_discovery_timeout; + u32 dot11MeshHWMPactivePathTimeout; + u16 dot11MeshHWMPpreqMinInterval; + u16 dot11MeshHWMPnetDiameterTraversalTime; +}; + + /* flags used in struct ieee80211_if_sta.flags */ #define IEEE80211_STA_SSID_SET BIT(0) #define IEEE80211_STA_BSSID_SET BIT(1) @@ -241,18 +316,47 @@ struct ieee80211_if_vlan { #define IEEE80211_STA_AUTO_CHANNEL_SEL BIT(12) #define IEEE80211_STA_PRIVACY_INVOKED BIT(13) struct ieee80211_if_sta { - enum { - IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, - IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, - IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED - } state; struct timer_list timer; struct work_struct work; u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; u8 ssid[IEEE80211_MAX_SSID_LEN]; + enum { + IEEE80211_DISABLED, IEEE80211_AUTHENTICATE, + IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED, + IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED, + IEEE80211_MESH_UP + } state; size_t ssid_len; u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; size_t scan_ssid_len; +#ifdef CONFIG_MAC80211_MESH + struct timer_list mesh_path_timer; + u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; + size_t mesh_id_len; + /* Active Path Selection Protocol Identifier */ + u8 mesh_pp_id[4]; + /* Active Path Selection Metric Identifier */ + u8 mesh_pm_id[4]; + /* Congestion Control Mode Identifier */ + u8 mesh_cc_id[4]; + /* Local mesh Destination Sequence Number */ + u32 dsn; + /* Last used PREQ ID */ + u32 preq_id; + atomic_t mpaths; + /* Timestamp of last DSN update */ + unsigned long last_dsn_update; + /* Timestamp of last DSN sent */ + unsigned long last_preq; + struct mesh_rmc *rmc; + spinlock_t mesh_preq_queue_lock; + struct mesh_preq_queue preq_queue; + int preq_queue_len; + struct mesh_stats mshstats; + struct mesh_config mshcfg; + u8 mesh_seqnum[3]; + bool accepting_plinks; +#endif u16 aid; u16 ap_capab, capab; u8 *extra_ie; /* to be added to the end of AssocReq */ @@ -262,16 +366,18 @@ struct ieee80211_if_sta { u8 *assocreq_ies, *assocresp_ies; size_t assocreq_ies_len, assocresp_ies_len; + struct sk_buff_head skb_queue; + int auth_tries, assoc_tries; + unsigned long request; + + unsigned long last_probe; + unsigned int flags; #define IEEE80211_STA_REQ_SCAN 0 #define IEEE80211_STA_REQ_AUTH 1 #define IEEE80211_STA_REQ_RUN 2 - unsigned long request; - struct sk_buff_head skb_queue; - - unsigned long last_probe; #define IEEE80211_AUTH_ALG_OPEN BIT(0) #define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1) @@ -282,16 +388,34 @@ struct ieee80211_if_sta { unsigned long ibss_join_req; struct sk_buff *probe_resp; /* ProbeResp template for IBSS */ - u32 supp_rates_bits; + u32 supp_rates_bits[IEEE80211_NUM_BANDS]; int wmm_last_param_set; + int num_beacons; /* number of TXed beacon frames by this STA */ }; +static inline void ieee80211_if_sta_set_mesh_id(struct ieee80211_if_sta *ifsta, + u8 mesh_id_len, u8 *mesh_id) +{ +#ifdef CONFIG_MAC80211_MESH + ifsta->mesh_id_len = mesh_id_len; + memcpy(ifsta->mesh_id, mesh_id, mesh_id_len); +#endif +} + +#ifdef CONFIG_MAC80211_MESH +#define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \ + do { (sta)->mshstats.name++; } while (0) +#else +#define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \ + do { } while (0) +#endif /* flags used in struct ieee80211_sub_if_data.flags */ #define IEEE80211_SDATA_ALLMULTI BIT(0) #define IEEE80211_SDATA_PROMISC BIT(1) #define IEEE80211_SDATA_USERSPACE_MLME BIT(2) +#define IEEE80211_SDATA_OPERATING_GMODE BIT(3) struct ieee80211_sub_if_data { struct list_head list; @@ -306,11 +430,11 @@ struct ieee80211_sub_if_data { unsigned int flags; int drop_unencrypted; + /* - * IEEE 802.1X Port access control in effect, - * drop packets to/from unauthorized port + * basic rates of this AP or the AP we're associated to */ - int ieee802_1x_pac; + u64 basic_rates; u16 sequence; @@ -338,6 +462,7 @@ struct ieee80211_sub_if_data { struct ieee80211_if_wds wds; struct ieee80211_if_vlan vlan; struct ieee80211_if_sta sta; + u32 mntr_flags; } u; int channel_use; int channel_use_raw; @@ -348,7 +473,6 @@ struct ieee80211_sub_if_data { struct { struct dentry *channel_use; struct dentry *drop_unencrypted; - struct dentry *ieee802_1x_pac; struct dentry *state; struct dentry *bssid; struct dentry *prev_bssid; @@ -363,11 +487,11 @@ struct ieee80211_sub_if_data { struct dentry *auth_alg; struct dentry *auth_transaction; struct dentry *flags; + struct dentry *num_beacons_sta; } sta; struct { struct dentry *channel_use; struct dentry *drop_unencrypted; - struct dentry *ieee802_1x_pac; struct dentry *num_sta_ps; struct dentry *dtim_count; struct dentry *num_beacons; @@ -378,19 +502,46 @@ struct ieee80211_sub_if_data { struct { struct dentry *channel_use; struct dentry *drop_unencrypted; - struct dentry *ieee802_1x_pac; struct dentry *peer; } wds; struct { struct dentry *channel_use; struct dentry *drop_unencrypted; - struct dentry *ieee802_1x_pac; } vlan; struct { struct dentry *mode; } monitor; struct dentry *default_key; } debugfs; + +#ifdef CONFIG_MAC80211_MESH + struct dentry *mesh_stats_dir; + struct { + struct dentry *fwded_frames; + struct dentry *dropped_frames_ttl; + struct dentry *dropped_frames_no_route; + struct dentry *estab_plinks; + struct timer_list mesh_path_timer; + } mesh_stats; + + struct dentry *mesh_config_dir; + struct { + struct dentry *dot11MeshRetryTimeout; + struct dentry *dot11MeshConfirmTimeout; + struct dentry *dot11MeshHoldingTimeout; + struct dentry *dot11MeshMaxRetries; + struct dentry *dot11MeshTTL; + struct dentry *auto_open_plinks; + struct dentry *dot11MeshMaxPeerLinks; + struct dentry *dot11MeshHWMPactivePathTimeout; + struct dentry *dot11MeshHWMPpreqMinInterval; + struct dentry *dot11MeshHWMPnetDiameterTraversalTime; + struct dentry *dot11MeshHWMPmaxPREQretries; + struct dentry *path_refresh_time; + struct dentry *min_discovery_timeout; + } mesh_config; +#endif + #endif /* must be last, dynamically sized area in this! */ struct ieee80211_vif vif; @@ -407,6 +558,8 @@ struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) enum { IEEE80211_RX_MSG = 1, IEEE80211_TX_STATUS_MSG = 2, + IEEE80211_DELBA_MSG = 3, + IEEE80211_ADDBA_MSG = 4, }; struct ieee80211_local { @@ -417,15 +570,15 @@ struct ieee80211_local { const struct ieee80211_ops *ops; - /* List of registered struct ieee80211_hw_mode */ - struct list_head modes_list; - struct net_device *mdev; /* wmaster# - "master" 802.11 device */ int open_count; - int monitors; + int monitors, cooked_mntrs; + /* number of interfaces with corresponding FIF_ flags */ + int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss; unsigned int filter_flags; /* FIF_* */ struct iw_statistics wstats; u8 wstats_flags; + bool tim_in_locked_section; /* see ieee80211_beacon_get() */ int tx_headroom; /* required headroom for hardware/radiotap */ enum { @@ -443,15 +596,22 @@ struct ieee80211_local { struct sk_buff_head skb_queue; struct sk_buff_head skb_queue_unreliable; - /* Station data structures */ - rwlock_t sta_lock; /* protects STA data structures */ - int num_sta; /* number of stations in sta_list */ + /* Station data */ + /* + * The lock only protects the list, hash, timer and counter + * against manipulation, reads are done in RCU. Additionally, + * the lock protects each BSS's TIM bitmap. + */ + spinlock_t sta_lock; + unsigned long num_sta; struct list_head sta_list; + struct list_head sta_flush_list; + struct work_struct sta_flush_work; struct sta_info *sta_hash[STA_HASH_SIZE]; struct timer_list sta_cleanup; - unsigned long state[NUM_TX_DATA_QUEUES]; - struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES]; + unsigned long state[NUM_TX_DATA_QUEUES_AMPDU]; + struct ieee80211_tx_stored_packet pending_packet[NUM_TX_DATA_QUEUES_AMPDU]; struct tasklet_struct tx_pending_tasklet; /* number of interfaces with corresponding IFF_ flags */ @@ -459,11 +619,6 @@ struct ieee80211_local { struct rate_control_ref *rate_ctrl; - /* Supported and basic rate filters for different modes. These are - * pointers to -1 terminated lists and rates in 100 kbps units. */ - int *supp_rates[NUM_IEEE80211_MODES]; - int *basic_rates[NUM_IEEE80211_MODES]; - int rts_threshold; int fragmentation_threshold; int short_retry_limit; /* dot11ShortRetryLimit */ @@ -477,21 +632,25 @@ struct ieee80211_local { * deliver multicast frames both back to wireless * media and to the local net stack */ - ieee80211_rx_handler *rx_pre_handlers; - ieee80211_rx_handler *rx_handlers; - ieee80211_tx_handler *tx_handlers; - struct list_head interfaces; + /* + * Key lock, protects sdata's key_list and sta_info's + * key pointers (write access, they're RCU.) + */ + spinlock_t key_lock; + + bool sta_sw_scanning; bool sta_hw_scanning; int scan_channel_idx; + enum ieee80211_band scan_band; + enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state; unsigned long last_scan_completed; struct delayed_work scan_work; struct net_device *scan_dev; struct ieee80211_channel *oper_channel, *scan_channel; - struct ieee80211_hw_mode *oper_hw_mode, *scan_hw_mode; u8 scan_ssid[IEEE80211_MAX_SSID_LEN]; size_t scan_ssid_len; struct list_head sta_bss_list; @@ -560,14 +719,8 @@ struct ieee80211_local { int wifi_wme_noack_test; unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */ - unsigned int enabled_modes; /* bitfield of allowed modes; - * (1 << MODE_*) */ - unsigned int hw_modes; /* bitfield of supported hardware modes; - * (1 << MODE_*) */ - #ifdef CONFIG_MAC80211_DEBUGFS struct local_debugfsdentries { - struct dentry *channel; struct dentry *frequency; struct dentry *antenna_sel_tx; struct dentry *antenna_sel_rx; @@ -577,9 +730,7 @@ struct ieee80211_local { struct dentry *short_retry_limit; struct dentry *long_retry_limit; struct dentry *total_ps_buffered; - struct dentry *mode; struct dentry *wep_iv; - struct dentry *modes; struct dentry *statistics; struct local_debugfsdentries_statsdentries { struct dentry *transmitted_fragment_count; @@ -627,6 +778,63 @@ struct ieee80211_local { #endif }; +/* this struct represents 802.11n's RA/TID combination */ +struct ieee80211_ra_tid { + u8 ra[ETH_ALEN]; + u16 tid; +}; + +/* Parsed Information Elements */ +struct ieee802_11_elems { + /* pointers to IEs */ + u8 *ssid; + u8 *supp_rates; + u8 *fh_params; + u8 *ds_params; + u8 *cf_params; + u8 *tim; + u8 *ibss_params; + u8 *challenge; + u8 *wpa; + u8 *rsn; + u8 *erp_info; + u8 *ext_supp_rates; + u8 *wmm_info; + u8 *wmm_param; + u8 *ht_cap_elem; + u8 *ht_info_elem; + u8 *mesh_config; + u8 *mesh_id; + u8 *peer_link; + u8 *preq; + u8 *prep; + u8 *perr; + + /* length of them, respectively */ + u8 ssid_len; + u8 supp_rates_len; + u8 fh_params_len; + u8 ds_params_len; + u8 cf_params_len; + u8 tim_len; + u8 ibss_params_len; + u8 challenge_len; + u8 wpa_len; + u8 rsn_len; + u8 erp_info_len; + u8 ext_supp_rates_len; + u8 wmm_info_len; + u8 wmm_param_len; + u8 ht_cap_elem_len; + u8 ht_info_elem_len; + u8 mesh_config_len; + u8 mesh_id_len; + u8 peer_link_len; + u8 preq_len; + u8 prep_len; + u8 perr_len; +}; + static inline struct ieee80211_local *hw_to_local( struct ieee80211_hw *hw) { @@ -650,57 +858,6 @@ struct sta_attribute { ssize_t (*store)(struct sta_info *, const char *buf, size_t count); }; -static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid) -{ - /* - * This format has been mandated by the IEEE specifications, - * so this line may not be changed to use the __set_bit() format. - */ - bss->tim[aid / 8] |= (1 << (aid % 8)); -} - -static inline void bss_tim_set(struct ieee80211_local *local, - struct ieee80211_if_ap *bss, u16 aid) -{ - read_lock_bh(&local->sta_lock); - __bss_tim_set(bss, aid); - read_unlock_bh(&local->sta_lock); -} - -static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid) -{ - /* - * This format has been mandated by the IEEE specifications, - * so this line may not be changed to use the __clear_bit() format. - */ - bss->tim[aid / 8] &= ~(1 << (aid % 8)); -} - -static inline void bss_tim_clear(struct ieee80211_local *local, - struct ieee80211_if_ap *bss, u16 aid) -{ - read_lock_bh(&local->sta_lock); - __bss_tim_clear(bss, aid); - read_unlock_bh(&local->sta_lock); -} - -/** - * ieee80211_is_erp_rate - Check if a rate is an ERP rate - * @phymode: The PHY-mode for this rate (MODE_IEEE80211...) - * @rate: Transmission rate to check, in 100 kbps - * - * Check if a given rate is an Extended Rate PHY (ERP) rate. - */ -static inline int ieee80211_is_erp_rate(int phymode, int rate) -{ - if (phymode == MODE_IEEE80211G) { - if (rate != 10 && rate != 20 && - rate != 55 && rate != 110) - return 1; - } - return 0; -} - static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) { return compare_ether_addr(raddr, addr) == 0 || @@ -712,16 +869,11 @@ static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) int ieee80211_hw_config(struct ieee80211_local *local); int ieee80211_if_config(struct net_device *dev); int ieee80211_if_config_beacon(struct net_device *dev); -void ieee80211_prepare_rates(struct ieee80211_local *local, - struct ieee80211_hw_mode *mode); -void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx); -int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr); +void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); void ieee80211_if_setup(struct net_device *dev); -struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local, - int phymode, int hwrate); -int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht, - struct ieee80211_ht_info *req_ht_cap, - struct ieee80211_ht_bss_info *req_bss_cap); +u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, + struct ieee80211_ht_info *req_ht_cap, + struct ieee80211_ht_bss_info *req_bss_cap); /* ieee80211_ioctl.c */ extern const struct iw_handler_def ieee80211_iw_handler_def; @@ -747,9 +899,7 @@ extern const struct iw_handler_def ieee80211_iw_handler_def; /* ieee80211_ioctl.c */ -int ieee80211_set_compression(struct ieee80211_local *local, - struct net_device *dev, struct sta_info *sta); -int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq); +int ieee80211_set_freq(struct ieee80211_local *local, int freq); /* ieee80211_sta.c */ void ieee80211_sta_timer(unsigned long data); void ieee80211_sta_work(struct work_struct *work); @@ -763,9 +913,9 @@ int ieee80211_sta_req_scan(struct net_device *dev, u8 *ssid, size_t ssid_len); void ieee80211_sta_req_auth(struct net_device *dev, struct ieee80211_if_sta *ifsta); int ieee80211_sta_scan_results(struct net_device *dev, char *buf, size_t len); -ieee80211_txrx_result ieee80211_sta_rx_scan(struct net_device *dev, - struct sk_buff *skb, - struct ieee80211_rx_status *rx_status); +ieee80211_rx_result ieee80211_sta_rx_scan( + struct net_device *dev, struct sk_buff *skb, + struct ieee80211_rx_status *rx_status); void ieee80211_rx_bss_list_init(struct net_device *dev); void ieee80211_rx_bss_list_deinit(struct net_device *dev); int ieee80211_sta_set_extra_ie(struct net_device *dev, char *ie, size_t len); @@ -782,12 +932,36 @@ int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie, int ieee80211_ht_addt_info_ie_to_ht_bss_info( struct ieee80211_ht_addt_info *ht_add_info_ie, struct ieee80211_ht_bss_info *bss_info); +void ieee80211_send_addba_request(struct net_device *dev, const u8 *da, + u16 tid, u8 dialog_token, u16 start_seq_num, + u16 agg_size, u16 timeout); +void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, + u16 initiator, u16 reason_code); + void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da, u16 tid, u16 initiator, u16 reason); void sta_rx_agg_session_timer_expired(unsigned long data); +void sta_addba_resp_timer_expired(unsigned long data); +void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr); +u64 ieee80211_sta_get_rates(struct ieee80211_local *local, + struct ieee802_11_elems *elems, + enum ieee80211_band band); +void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, + int encrypt); +void ieee802_11_parse_elems(u8 *start, size_t len, + struct ieee802_11_elems *elems); + +#ifdef CONFIG_MAC80211_MESH +void ieee80211_start_mesh(struct net_device *dev); +#else +static inline void ieee80211_start_mesh(struct net_device *dev) +{} +#endif + /* ieee80211_iface.c */ int ieee80211_if_add(struct net_device *dev, const char *name, - struct net_device **new_dev, int type); + struct net_device **new_dev, int type, + struct vif_params *params); void ieee80211_if_set_type(struct net_device *dev, int type); void ieee80211_if_reinit(struct net_device *dev); void __ieee80211_if_del(struct ieee80211_local *local, @@ -796,16 +970,7 @@ int ieee80211_if_remove(struct net_device *dev, const char *name, int id); void ieee80211_if_free(struct net_device *dev); void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata); -/* regdomain.c */ -void ieee80211_regdomain_init(void); -void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode); - -/* rx handling */ -extern ieee80211_rx_handler ieee80211_rx_pre_handlers[]; -extern ieee80211_rx_handler ieee80211_rx_handlers[]; - /* tx handling */ -extern ieee80211_tx_handler ieee80211_tx_handlers[]; void ieee80211_clear_tx_pending(struct ieee80211_local *local); void ieee80211_tx_pending(unsigned long data); int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev); diff --git a/net/mac80211/ieee80211_iface.c b/net/mac80211/iface.c index 92f1eb2..80954a5 100644 --- a/net/mac80211/ieee80211_iface.c +++ b/net/mac80211/iface.c @@ -15,6 +15,7 @@ #include "ieee80211_i.h" #include "sta_info.h" #include "debugfs_netdev.h" +#include "mesh.h" void ieee80211_if_sdata_init(struct ieee80211_sub_if_data *sdata) { @@ -39,7 +40,8 @@ static void ieee80211_if_sdata_deinit(struct ieee80211_sub_if_data *sdata) /* Must be called with rtnl lock held. */ int ieee80211_if_add(struct net_device *dev, const char *name, - struct net_device **new_dev, int type) + struct net_device **new_dev, int type, + struct vif_params *params) { struct net_device *ndev; struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); @@ -78,6 +80,12 @@ int ieee80211_if_add(struct net_device *dev, const char *name, ieee80211_debugfs_add_netdev(sdata); ieee80211_if_set_type(ndev, type); + if (ieee80211_vif_is_mesh(&sdata->vif) && + params && params->mesh_id_len) + ieee80211_if_sta_set_mesh_id(&sdata->u.sta, + params->mesh_id_len, + params->mesh_id); + /* we're under RTNL so all this is fine */ if (unlikely(local->reg_state == IEEE80211_DEV_UNREGISTERED)) { __ieee80211_if_del(local, sdata); @@ -118,6 +126,8 @@ void ieee80211_if_set_type(struct net_device *dev, int type) sdata->bss = NULL; sdata->vif.type = type; + sdata->basic_rates = 0; + switch (type) { case IEEE80211_IF_TYPE_WDS: /* nothing special */ @@ -132,6 +142,7 @@ void ieee80211_if_set_type(struct net_device *dev, int type) sdata->bss = &sdata->u.ap; INIT_LIST_HEAD(&sdata->u.ap.vlans); break; + case IEEE80211_IF_TYPE_MESH_POINT: case IEEE80211_IF_TYPE_STA: case IEEE80211_IF_TYPE_IBSS: { struct ieee80211_sub_if_data *msdata; @@ -153,15 +164,20 @@ void ieee80211_if_set_type(struct net_device *dev, int type) msdata = IEEE80211_DEV_TO_SUB_IF(sdata->local->mdev); sdata->bss = &msdata->u.ap; + + if (ieee80211_vif_is_mesh(&sdata->vif)) + ieee80211_mesh_init_sdata(sdata); break; } case IEEE80211_IF_TYPE_MNTR: dev->type = ARPHRD_IEEE80211_RADIOTAP; dev->hard_start_xmit = ieee80211_monitor_start_xmit; + sdata->u.mntr_flags = MONITOR_FLAG_CONTROL | + MONITOR_FLAG_OTHER_BSS; break; default: printk(KERN_WARNING "%s: %s: Unknown interface type 0x%x", - dev->name, __FUNCTION__, type); + dev->name, __func__, type); } ieee80211_debugfs_change_if_type(sdata, oldtype); } @@ -171,8 +187,8 @@ void ieee80211_if_reinit(struct net_device *dev) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct sta_info *sta; struct sk_buff *skb; + int flushed; ASSERT_RTNL(); @@ -180,6 +196,10 @@ void ieee80211_if_reinit(struct net_device *dev) ieee80211_if_sdata_deinit(sdata); + /* Need to handle mesh specially to allow eliding the function call */ + if (ieee80211_vif_is_mesh(&sdata->vif)) + mesh_rmc_free(dev); + switch (sdata->vif.type) { case IEEE80211_IF_TYPE_INVALID: /* cannot happen */ @@ -189,6 +209,7 @@ void ieee80211_if_reinit(struct net_device *dev) /* Remove all virtual interfaces that use this BSS * as their sdata->bss */ struct ieee80211_sub_if_data *tsdata, *n; + struct beacon_data *beacon; list_for_each_entry_safe(tsdata, n, &local->interfaces, list) { if (tsdata != sdata && tsdata->bss == &sdata->u.ap) { @@ -206,7 +227,10 @@ void ieee80211_if_reinit(struct net_device *dev) } } - kfree(sdata->u.ap.beacon); + beacon = sdata->u.ap.beacon; + rcu_assign_pointer(sdata->u.ap.beacon, NULL); + synchronize_rcu(); + kfree(beacon); while ((skb = skb_dequeue(&sdata->u.ap.ps_bc_buf))) { local->total_ps_buffered--; @@ -216,17 +240,9 @@ void ieee80211_if_reinit(struct net_device *dev) break; } case IEEE80211_IF_TYPE_WDS: - sta = sta_info_get(local, sdata->u.wds.remote_addr); - if (sta) { - sta_info_free(sta); - sta_info_put(sta); - } else { -#ifdef CONFIG_MAC80211_VERBOSE_DEBUG - printk(KERN_DEBUG "%s: Someone had deleted my STA " - "entry for the WDS link\n", dev->name); -#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ - } + /* nothing to do */ break; + case IEEE80211_IF_TYPE_MESH_POINT: case IEEE80211_IF_TYPE_STA: case IEEE80211_IF_TYPE_IBSS: kfree(sdata->u.sta.extra_ie); @@ -249,8 +265,8 @@ void ieee80211_if_reinit(struct net_device *dev) break; } - /* remove all STAs that are bound to this virtual interface */ - sta_info_flush(local, dev); + flushed = sta_info_flush(local, sdata); + WARN_ON(flushed); memset(&sdata->u, 0, sizeof(sdata->u)); ieee80211_if_sdata_init(sdata); diff --git a/net/mac80211/key.c b/net/mac80211/key.c index ed57fb8..150d66d 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -2,7 +2,7 @@ * Copyright 2002-2005, Instant802 Networks, Inc. * Copyright 2005-2006, Devicescape Software, Inc. * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> - * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> + * Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -13,14 +13,15 @@ #include <linux/etherdevice.h> #include <linux/list.h> #include <linux/rcupdate.h> +#include <linux/rtnetlink.h> #include <net/mac80211.h> #include "ieee80211_i.h" #include "debugfs_key.h" #include "aes_ccm.h" -/* - * Key handling basics +/** + * DOC: Key handling basics * * Key handling in mac80211 is done based on per-interface (sub_if_data) * keys and per-station keys. Since each station belongs to an interface, @@ -32,13 +33,81 @@ * There is currently no way of knowing this except by looking into * debugfs. * - * All operations here are called under RTNL so no extra locking is - * required. + * All key operations are protected internally so you can call them at + * any time. + * + * Within mac80211, key references are, just as STA structure references, + * protected by RCU. Note, however, that some things are unprotected, + * namely the key->sta dereferences within the hardware acceleration + * functions. This means that sta_info_destroy() must flush the key todo + * list. + * + * All the direct key list manipulation functions must not sleep because + * they can operate on STA info structs that are protected by RCU. */ static const u8 bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; static const u8 zero_addr[ETH_ALEN]; +/* key mutex: used to synchronise todo runners */ +static DEFINE_MUTEX(key_mutex); +static DEFINE_SPINLOCK(todo_lock); +static LIST_HEAD(todo_list); + +static void key_todo(struct work_struct *work) +{ + ieee80211_key_todo(); +} + +static DECLARE_WORK(todo_work, key_todo); + +/** + * add_todo - add todo item for a key + * + * @key: key to add to do item for + * @flag: todo flag(s) + */ +static void add_todo(struct ieee80211_key *key, u32 flag) +{ + if (!key) + return; + + spin_lock(&todo_lock); + key->flags |= flag; + /* + * Remove again if already on the list so that we move it to the end. + */ + if (!list_empty(&key->todo)) + list_del(&key->todo); + list_add_tail(&key->todo, &todo_list); + schedule_work(&todo_work); + spin_unlock(&todo_lock); +} + +/** + * ieee80211_key_lock - lock the mac80211 key operation lock + * + * This locks the (global) mac80211 key operation lock, all + * key operations must be done under this lock. + */ +static void ieee80211_key_lock(void) +{ + mutex_lock(&key_mutex); +} + +/** + * ieee80211_key_unlock - unlock the mac80211 key operation lock + */ +static void ieee80211_key_unlock(void) +{ + mutex_unlock(&key_mutex); +} + +static void assert_key_lock(void) +{ + WARN_ON(!mutex_is_locked(&key_mutex)); +} + static const u8 *get_mac_for_key(struct ieee80211_key *key) { const u8 *addr = bcast_addr; @@ -65,6 +134,9 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key) int ret; DECLARE_MAC_BUF(mac); + assert_key_lock(); + might_sleep(); + if (!key->local->ops->set_key) return; @@ -74,8 +146,11 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key) key->sdata->dev->dev_addr, addr, &key->conf); - if (!ret) + if (!ret) { + spin_lock(&todo_lock); key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE; + spin_unlock(&todo_lock); + } if (ret && ret != -ENOSPC && ret != -EOPNOTSUPP) printk(KERN_ERR "mac80211-%s: failed to set key " @@ -90,11 +165,18 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) int ret; DECLARE_MAC_BUF(mac); - if (!key->local->ops->set_key) + assert_key_lock(); + might_sleep(); + + if (!key || !key->local->ops->set_key) return; - if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) + spin_lock(&todo_lock); + if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) { + spin_unlock(&todo_lock); return; + } + spin_unlock(&todo_lock); addr = get_mac_for_key(key); @@ -108,12 +190,75 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key) wiphy_name(key->local->hw.wiphy), key->conf.keyidx, print_mac(mac, addr), ret); + spin_lock(&todo_lock); key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE; + spin_unlock(&todo_lock); } -struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, - struct sta_info *sta, - enum ieee80211_key_alg alg, +static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, + int idx) +{ + struct ieee80211_key *key = NULL; + + if (idx >= 0 && idx < NUM_DEFAULT_KEYS) + key = sdata->keys[idx]; + + rcu_assign_pointer(sdata->default_key, key); + + if (key) + add_todo(key, KEY_FLAG_TODO_DEFKEY); +} + +void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx) +{ + unsigned long flags; + + spin_lock_irqsave(&sdata->local->key_lock, flags); + __ieee80211_set_default_key(sdata, idx); + spin_unlock_irqrestore(&sdata->local->key_lock, flags); +} + + +static void __ieee80211_key_replace(struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, + struct ieee80211_key *old, + struct ieee80211_key *new) +{ + int idx, defkey; + + if (new) + list_add(&new->list, &sdata->key_list); + + if (sta) { + rcu_assign_pointer(sta->key, new); + } else { + WARN_ON(new && old && new->conf.keyidx != old->conf.keyidx); + + if (old) + idx = old->conf.keyidx; + else + idx = new->conf.keyidx; + + defkey = old && sdata->default_key == old; + + if (defkey && !new) + __ieee80211_set_default_key(sdata, -1); + + rcu_assign_pointer(sdata->keys[idx], new); + if (defkey && new) + __ieee80211_set_default_key(sdata, new->conf.keyidx); + } + + if (old) { + /* + * We'll use an empty list to indicate that the key + * has already been removed. + */ + list_del_init(&old->list); + } +} + +struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, int idx, size_t key_len, const u8 *key_data) @@ -137,10 +282,8 @@ struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, key->conf.keyidx = idx; key->conf.keylen = key_len; memcpy(key->conf.key, key_data, key_len); - - key->local = sdata->local; - key->sdata = sdata; - key->sta = sta; + INIT_LIST_HEAD(&key->list); + INIT_LIST_HEAD(&key->todo); if (alg == ALG_CCMP) { /* @@ -149,22 +292,31 @@ struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, */ key->u.ccmp.tfm = ieee80211_aes_key_setup_encrypt(key_data); if (!key->u.ccmp.tfm) { - ieee80211_key_free(key); + kfree(key); return NULL; } } - ieee80211_debugfs_key_add(key->local, key); + return key; +} - /* remove key first */ - if (sta) - ieee80211_key_free(sta->key); - else - ieee80211_key_free(sdata->keys[idx]); +void ieee80211_key_link(struct ieee80211_key *key, + struct ieee80211_sub_if_data *sdata, + struct sta_info *sta) +{ + struct ieee80211_key *old_key; + unsigned long flags; + int idx; - if (sta) { - ieee80211_debugfs_key_sta_link(key, sta); + BUG_ON(!sdata); + BUG_ON(!key); + idx = key->conf.keyidx; + key->local = sdata->local; + key->sdata = sdata; + key->sta = sta; + + if (sta) { /* * some hardware cannot handle TKIP with QoS, so * we indicate whether QoS could be in use. @@ -175,105 +327,194 @@ struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, if (sdata->vif.type == IEEE80211_IF_TYPE_STA) { struct sta_info *ap; + /* + * We're getting a sta pointer in, + * so must be under RCU read lock. + */ + /* same here, the AP could be using QoS */ ap = sta_info_get(key->local, key->sdata->u.sta.bssid); if (ap) { if (ap->flags & WLAN_STA_WME) key->conf.flags |= IEEE80211_KEY_FLAG_WMM_STA; - sta_info_put(ap); } } } - /* enable hwaccel if appropriate */ - if (netif_running(key->sdata->dev)) - ieee80211_key_enable_hw_accel(key); + spin_lock_irqsave(&sdata->local->key_lock, flags); if (sta) - rcu_assign_pointer(sta->key, key); + old_key = sta->key; else - rcu_assign_pointer(sdata->keys[idx], key); + old_key = sdata->keys[idx]; - list_add(&key->list, &sdata->key_list); + __ieee80211_key_replace(sdata, sta, old_key, key); - return key; + spin_unlock_irqrestore(&sdata->local->key_lock, flags); + + /* free old key later */ + add_todo(old_key, KEY_FLAG_TODO_DELETE); + + add_todo(key, KEY_FLAG_TODO_ADD_DEBUGFS); + if (netif_running(sdata->dev)) + add_todo(key, KEY_FLAG_TODO_HWACCEL_ADD); +} + +static void __ieee80211_key_free(struct ieee80211_key *key) +{ + /* + * Replace key with nothingness if it was ever used. + */ + if (key->sdata) + __ieee80211_key_replace(key->sdata, key->sta, + key, NULL); + + add_todo(key, KEY_FLAG_TODO_DELETE); } void ieee80211_key_free(struct ieee80211_key *key) { + unsigned long flags; + if (!key) return; - if (key->sta) { - rcu_assign_pointer(key->sta->key, NULL); - } else { - if (key->sdata->default_key == key) - ieee80211_set_default_key(key->sdata, -1); - if (key->conf.keyidx >= 0 && - key->conf.keyidx < NUM_DEFAULT_KEYS) - rcu_assign_pointer(key->sdata->keys[key->conf.keyidx], - NULL); - else - WARN_ON(1); - } + spin_lock_irqsave(&key->sdata->local->key_lock, flags); + __ieee80211_key_free(key); + spin_unlock_irqrestore(&key->sdata->local->key_lock, flags); +} - /* wait for all key users to complete */ - synchronize_rcu(); +/* + * To be safe against concurrent manipulations of the list (which shouldn't + * actually happen) we need to hold the spinlock. But under the spinlock we + * can't actually do much, so we defer processing to the todo list. Then run + * the todo list to be sure the operation and possibly previously pending + * operations are completed. + */ +static void ieee80211_todo_for_each_key(struct ieee80211_sub_if_data *sdata, + u32 todo_flags) +{ + struct ieee80211_key *key; + unsigned long flags; + + might_sleep(); + + spin_lock_irqsave(&sdata->local->key_lock, flags); + list_for_each_entry(key, &sdata->key_list, list) + add_todo(key, todo_flags); + spin_unlock_irqrestore(&sdata->local->key_lock, flags); + + ieee80211_key_todo(); +} + +void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata) +{ + ASSERT_RTNL(); + + if (WARN_ON(!netif_running(sdata->dev))) + return; + + ieee80211_todo_for_each_key(sdata, KEY_FLAG_TODO_HWACCEL_ADD); +} + +void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata) +{ + ASSERT_RTNL(); + + ieee80211_todo_for_each_key(sdata, KEY_FLAG_TODO_HWACCEL_REMOVE); +} + +static void __ieee80211_key_destroy(struct ieee80211_key *key) +{ + if (!key) + return; - /* remove from hwaccel if appropriate */ ieee80211_key_disable_hw_accel(key); if (key->conf.alg == ALG_CCMP) ieee80211_aes_key_free(key->u.ccmp.tfm); ieee80211_debugfs_key_remove(key); - list_del(&key->list); - kfree(key); } -void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx) +static void __ieee80211_key_todo(void) { - struct ieee80211_key *key = NULL; + struct ieee80211_key *key; + bool work_done; + u32 todoflags; - if (idx >= 0 && idx < NUM_DEFAULT_KEYS) - key = sdata->keys[idx]; + /* + * NB: sta_info_destroy relies on this! + */ + synchronize_rcu(); - if (sdata->default_key != key) { - ieee80211_debugfs_key_remove_default(sdata); + spin_lock(&todo_lock); + while (!list_empty(&todo_list)) { + key = list_first_entry(&todo_list, struct ieee80211_key, todo); + list_del_init(&key->todo); + todoflags = key->flags & (KEY_FLAG_TODO_ADD_DEBUGFS | + KEY_FLAG_TODO_DEFKEY | + KEY_FLAG_TODO_HWACCEL_ADD | + KEY_FLAG_TODO_HWACCEL_REMOVE | + KEY_FLAG_TODO_DELETE); + key->flags &= ~todoflags; + spin_unlock(&todo_lock); + + work_done = false; + + if (todoflags & KEY_FLAG_TODO_ADD_DEBUGFS) { + ieee80211_debugfs_key_add(key); + work_done = true; + } + if (todoflags & KEY_FLAG_TODO_DEFKEY) { + ieee80211_debugfs_key_remove_default(key->sdata); + ieee80211_debugfs_key_add_default(key->sdata); + work_done = true; + } + if (todoflags & KEY_FLAG_TODO_HWACCEL_ADD) { + ieee80211_key_enable_hw_accel(key); + work_done = true; + } + if (todoflags & KEY_FLAG_TODO_HWACCEL_REMOVE) { + ieee80211_key_disable_hw_accel(key); + work_done = true; + } + if (todoflags & KEY_FLAG_TODO_DELETE) { + __ieee80211_key_destroy(key); + work_done = true; + } - rcu_assign_pointer(sdata->default_key, key); + WARN_ON(!work_done); - if (sdata->default_key) - ieee80211_debugfs_key_add_default(sdata); + spin_lock(&todo_lock); } + spin_unlock(&todo_lock); } -void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata) +void ieee80211_key_todo(void) { - struct ieee80211_key *key, *tmp; - - list_for_each_entry_safe(key, tmp, &sdata->key_list, list) - ieee80211_key_free(key); + ieee80211_key_lock(); + __ieee80211_key_todo(); + ieee80211_key_unlock(); } -void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata) +void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata) { - struct ieee80211_key *key; + struct ieee80211_key *key, *tmp; + unsigned long flags; - WARN_ON(!netif_running(sdata->dev)); - if (!netif_running(sdata->dev)) - return; + ieee80211_key_lock(); - list_for_each_entry(key, &sdata->key_list, list) - ieee80211_key_enable_hw_accel(key); -} + ieee80211_debugfs_key_remove_default(sdata); -void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata) -{ - struct ieee80211_key *key; + spin_lock_irqsave(&sdata->local->key_lock, flags); + list_for_each_entry_safe(key, tmp, &sdata->key_list, list) + __ieee80211_key_free(key); + spin_unlock_irqrestore(&sdata->local->key_lock, flags); - list_for_each_entry(key, &sdata->key_list, list) - ieee80211_key_disable_hw_accel(key); + __ieee80211_key_todo(); + + ieee80211_key_unlock(); } diff --git a/net/mac80211/ieee80211_key.h b/net/mac80211/key.h index fc770e9..f52c3df 100644 --- a/net/mac80211/ieee80211_key.h +++ b/net/mac80211/key.h @@ -13,6 +13,7 @@ #include <linux/types.h> #include <linux/list.h> #include <linux/crypto.h> +#include <linux/rcupdate.h> #include <net/mac80211.h> /* ALG_TKIP @@ -45,15 +46,40 @@ struct ieee80211_local; struct ieee80211_sub_if_data; struct sta_info; -#define KEY_FLAG_UPLOADED_TO_HARDWARE (1<<0) +/** + * enum ieee80211_internal_key_flags - internal key flags + * + * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present + * in the hardware for TX crypto hardware acceleration. + * @KEY_FLAG_TODO_DELETE: Key is marked for deletion and will, after an + * RCU grace period, no longer be reachable other than from the + * todo list. + * @KEY_FLAG_TODO_HWACCEL_ADD: Key needs to be added to hardware acceleration. + * @KEY_FLAG_TODO_HWACCEL_REMOVE: Key needs to be removed from hardware + * acceleration. + * @KEY_FLAG_TODO_DEFKEY: Key is default key and debugfs needs to be updated. + * @KEY_FLAG_TODO_ADD_DEBUGFS: Key needs to be added to debugfs. + */ +enum ieee80211_internal_key_flags { + KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0), + KEY_FLAG_TODO_DELETE = BIT(1), + KEY_FLAG_TODO_HWACCEL_ADD = BIT(2), + KEY_FLAG_TODO_HWACCEL_REMOVE = BIT(3), + KEY_FLAG_TODO_DEFKEY = BIT(4), + KEY_FLAG_TODO_ADD_DEBUGFS = BIT(5), +}; struct ieee80211_key { struct ieee80211_local *local; struct ieee80211_sub_if_data *sdata; struct sta_info *sta; + /* for sdata list */ struct list_head list; + /* for todo list */ + struct list_head todo; + /* protected by todo lock! */ unsigned int flags; union { @@ -102,6 +128,7 @@ struct ieee80211_key { struct dentry *replays; struct dentry *key; struct dentry *ifindex; + int cnt; } debugfs; #endif @@ -112,16 +139,23 @@ struct ieee80211_key { struct ieee80211_key_conf conf; }; -struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata, - struct sta_info *sta, - enum ieee80211_key_alg alg, +struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg, int idx, size_t key_len, const u8 *key_data); +/* + * Insert a key into data structures (sdata, sta if necessary) + * to make it used, free old key. + */ +void ieee80211_key_link(struct ieee80211_key *key, + struct ieee80211_sub_if_data *sdata, + struct sta_info *sta); void ieee80211_key_free(struct ieee80211_key *key); void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx); void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata); void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata); void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata); +void ieee80211_key_todo(void); + #endif /* IEEE80211_KEY_H */ diff --git a/net/mac80211/ieee80211_led.c b/net/mac80211/led.c index f401484..162a643 100644 --- a/net/mac80211/ieee80211_led.c +++ b/net/mac80211/led.c @@ -8,7 +8,7 @@ /* just for IFNAMSIZ */ #include <linux/if.h> -#include "ieee80211_led.h" +#include "led.h" void ieee80211_led_rx(struct ieee80211_local *local) { diff --git a/net/mac80211/ieee80211_led.h b/net/mac80211/led.h index 77b1e1b..77b1e1b 100644 --- a/net/mac80211/ieee80211_led.h +++ b/net/mac80211/led.h diff --git a/net/mac80211/ieee80211.c b/net/mac80211/main.c index 8e58639..e9a9789 100644 --- a/net/mac80211/ieee80211.c +++ b/net/mac80211/main.c @@ -25,11 +25,12 @@ #include <net/cfg80211.h> #include "ieee80211_i.h" -#include "ieee80211_rate.h" +#include "rate.h" +#include "mesh.h" #include "wep.h" #include "wme.h" #include "aes_ccm.h" -#include "ieee80211_led.h" +#include "led.h" #include "cfg.h" #include "debugfs.h" #include "debugfs_netdev.h" @@ -67,9 +68,19 @@ static void ieee80211_configure_filter(struct ieee80211_local *local) new_flags |= FIF_ALLMULTI; if (local->monitors) - new_flags |= FIF_CONTROL | - FIF_OTHER_BSS | - FIF_BCN_PRBRESP_PROMISC; + new_flags |= FIF_BCN_PRBRESP_PROMISC; + + if (local->fif_fcsfail) + new_flags |= FIF_FCSFAIL; + + if (local->fif_plcpfail) + new_flags |= FIF_PLCPFAIL; + + if (local->fif_control) + new_flags |= FIF_CONTROL; + + if (local->fif_other_bss) + new_flags |= FIF_OTHER_BSS; changed_flags = local->filter_flags ^ new_flags; @@ -128,9 +139,15 @@ static void ieee80211_master_set_multicast_list(struct net_device *dev) static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) { + int meshhdrlen; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + meshhdrlen = (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) ? 5 : 0; + /* FIX: what would be proper limits for MTU? * This interface uses 802.3 frames. */ - if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) { + if (new_mtu < 256 || + new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6 - meshhdrlen) { printk(KERN_WARNING "%s: invalid MTU %d\n", dev->name, new_mtu); return -EINVAL; @@ -166,6 +183,7 @@ static int ieee80211_open(struct net_device *dev) struct ieee80211_if_init_conf conf; int res; bool need_hw_reconfig = 0; + struct sta_info *sta; sdata = IEEE80211_DEV_TO_SUB_IF(dev); @@ -173,8 +191,52 @@ static int ieee80211_open(struct net_device *dev) list_for_each_entry(nsdata, &local->interfaces, list) { struct net_device *ndev = nsdata->dev; - if (ndev != dev && ndev != local->mdev && netif_running(ndev) && - compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0) { + if (ndev != dev && ndev != local->mdev && netif_running(ndev)) { + /* + * Allow only a single IBSS interface to be up at any + * time. This is restricted because beacon distribution + * cannot work properly if both are in the same IBSS. + * + * To remove this restriction we'd have to disallow them + * from setting the same SSID on different IBSS interfaces + * belonging to the same hardware. Then, however, we're + * faced with having to adopt two different TSF timers... + */ + if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && + nsdata->vif.type == IEEE80211_IF_TYPE_IBSS) + return -EBUSY; + + /* + * Disallow multiple IBSS/STA mode interfaces. + * + * This is a technical restriction, it is possible although + * most likely not IEEE 802.11 compliant to have multiple + * STAs with just a single hardware (the TSF timer will not + * be adjusted properly.) + * + * However, because mac80211 uses the master device's BSS + * information for each STA/IBSS interface, doing this will + * currently corrupt that BSS information completely, unless, + * a not very useful case, both STAs are associated to the + * same BSS. + * + * To remove this restriction, the BSS information needs to + * be embedded in the STA/IBSS mode sdata instead of using + * the master device's BSS structure. + */ + if ((sdata->vif.type == IEEE80211_IF_TYPE_STA || + sdata->vif.type == IEEE80211_IF_TYPE_IBSS) && + (nsdata->vif.type == IEEE80211_IF_TYPE_STA || + nsdata->vif.type == IEEE80211_IF_TYPE_IBSS)) + return -EBUSY; + + /* + * The remaining checks are only performed for interfaces + * with the same MAC address. + */ + if (compare_ether_addr(dev->dev_addr, ndev->dev_addr)) + continue; + /* * check whether it may have the same address */ @@ -186,8 +248,7 @@ static int ieee80211_open(struct net_device *dev) * can only add VLANs to enabled APs */ if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN && - nsdata->vif.type == IEEE80211_IF_TYPE_AP && - netif_running(nsdata->dev)) + nsdata->vif.type == IEEE80211_IF_TYPE_AP) sdata->u.vlan.ap = nsdata; } } @@ -196,6 +257,20 @@ static int ieee80211_open(struct net_device *dev) case IEEE80211_IF_TYPE_WDS: if (is_zero_ether_addr(sdata->u.wds.remote_addr)) return -ENOLINK; + + /* Create STA entry for the WDS peer */ + sta = sta_info_alloc(sdata, sdata->u.wds.remote_addr, + GFP_KERNEL); + if (!sta) + return -ENOMEM; + + sta->flags |= WLAN_STA_AUTHORIZED; + + res = sta_info_insert(sta); + if (res) { + /* STA has been freed */ + return res; + } break; case IEEE80211_IF_TYPE_VLAN: if (!sdata->u.vlan.ap) @@ -205,6 +280,7 @@ static int ieee80211_open(struct net_device *dev) case IEEE80211_IF_TYPE_STA: case IEEE80211_IF_TYPE_MNTR: case IEEE80211_IF_TYPE_IBSS: + case IEEE80211_IF_TYPE_MESH_POINT: /* no special treatment */ break; case IEEE80211_IF_TYPE_INVALID: @@ -229,15 +305,28 @@ static int ieee80211_open(struct net_device *dev) /* no need to tell driver */ break; case IEEE80211_IF_TYPE_MNTR: + if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { + local->cooked_mntrs++; + break; + } + /* must be before the call to ieee80211_configure_filter */ local->monitors++; - if (local->monitors == 1) { - netif_tx_lock_bh(local->mdev); - ieee80211_configure_filter(local); - netif_tx_unlock_bh(local->mdev); - + if (local->monitors == 1) local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; - } + + if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) + local->fif_fcsfail++; + if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) + local->fif_plcpfail++; + if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) + local->fif_control++; + if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) + local->fif_other_bss++; + + netif_tx_lock_bh(local->mdev); + ieee80211_configure_filter(local); + netif_tx_unlock_bh(local->mdev); break; case IEEE80211_IF_TYPE_STA: case IEEE80211_IF_TYPE_IBSS: @@ -305,24 +394,46 @@ static int ieee80211_open(struct net_device *dev) static int ieee80211_stop(struct net_device *dev) { - struct ieee80211_sub_if_data *sdata; - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; struct ieee80211_if_init_conf conf; struct sta_info *sta; - int i; - sdata = IEEE80211_DEV_TO_SUB_IF(dev); + /* + * Stop TX on this interface first. + */ + netif_stop_queue(dev); - list_for_each_entry(sta, &local->sta_list, list) { - if (sta->dev == dev) - for (i = 0; i < STA_TID_NUM; i++) - ieee80211_sta_stop_rx_ba_session(sta->dev, - sta->addr, i, - WLAN_BACK_RECIPIENT, - WLAN_REASON_QSTA_LEAVE_QBSS); + /* + * Now delete all active aggregation sessions. + */ + rcu_read_lock(); + + list_for_each_entry_rcu(sta, &local->sta_list, list) { + if (sta->sdata == sdata) + ieee80211_sta_tear_down_BA_sessions(dev, sta->addr); } - netif_stop_queue(dev); + rcu_read_unlock(); + + /* + * Remove all stations associated with this interface. + * + * This must be done before calling ops->remove_interface() + * because otherwise we can later invoke ops->sta_notify() + * whenever the STAs are removed, and that invalidates driver + * assumptions about always getting a vif pointer that is valid + * (because if we remove a STA after ops->remove_interface() + * the driver will have removed the vif info already!) + * + * We could relax this and only unlink the stations from the + * hash table and list but keep them on a per-sdata list that + * will be inserted back again when the interface is brought + * up again, but I don't currently see a use case for that, + * except with WDS which gets a STA entry created when it is + * brought up. + */ + sta_info_flush(local, sdata); /* * Don't count this interface for promisc/allmulti while it @@ -364,15 +475,29 @@ static int ieee80211_stop(struct net_device *dev) /* no need to tell driver */ break; case IEEE80211_IF_TYPE_MNTR: - local->monitors--; - if (local->monitors == 0) { - netif_tx_lock_bh(local->mdev); - ieee80211_configure_filter(local); - netif_tx_unlock_bh(local->mdev); + if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) { + local->cooked_mntrs--; + break; + } + local->monitors--; + if (local->monitors == 0) local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP; - } + + if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL) + local->fif_fcsfail--; + if (sdata->u.mntr_flags & MONITOR_FLAG_PLCPFAIL) + local->fif_plcpfail--; + if (sdata->u.mntr_flags & MONITOR_FLAG_CONTROL) + local->fif_control--; + if (sdata->u.mntr_flags & MONITOR_FLAG_OTHER_BSS) + local->fif_other_bss--; + + netif_tx_lock_bh(local->mdev); + ieee80211_configure_filter(local); + netif_tx_unlock_bh(local->mdev); break; + case IEEE80211_IF_TYPE_MESH_POINT: case IEEE80211_IF_TYPE_STA: case IEEE80211_IF_TYPE_IBSS: sdata->u.sta.state = IEEE80211_DISABLED; @@ -426,6 +551,357 @@ static int ieee80211_stop(struct net_device *dev) return 0; } +int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) +{ + struct ieee80211_local *local = hw_to_local(hw); + struct sta_info *sta; + struct ieee80211_sub_if_data *sdata; + u16 start_seq_num = 0; + u8 *state; + int ret; + DECLARE_MAC_BUF(mac); + + if (tid >= STA_TID_NUM) + return -EINVAL; + +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "Open BA session requested for %s tid %u\n", + print_mac(mac, ra), tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + + rcu_read_lock(); + + sta = sta_info_get(local, ra); + if (!sta) { + printk(KERN_DEBUG "Could not find the station\n"); + rcu_read_unlock(); + return -ENOENT; + } + + spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); + + /* we have tried too many times, receiver does not want A-MPDU */ + if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) { + ret = -EBUSY; + goto start_ba_exit; + } + + state = &sta->ampdu_mlme.tid_state_tx[tid]; + /* check if the TID is not in aggregation flow already */ + if (*state != HT_AGG_STATE_IDLE) { +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "BA request denied - session is not " + "idle on tid %u\n", tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + ret = -EAGAIN; + goto start_ba_exit; + } + + /* prepare A-MPDU MLME for Tx aggregation */ + sta->ampdu_mlme.tid_tx[tid] = + kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC); + if (!sta->ampdu_mlme.tid_tx[tid]) { + if (net_ratelimit()) + printk(KERN_ERR "allocate tx mlme to tid %d failed\n", + tid); + ret = -ENOMEM; + goto start_ba_exit; + } + /* Tx timer */ + sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function = + sta_addba_resp_timer_expired; + sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data = + (unsigned long)&sta->timer_to_tid[tid]; + init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); + + /* ensure that TX flow won't interrupt us + * until the end of the call to requeue function */ + spin_lock_bh(&local->mdev->queue_lock); + + /* create a new queue for this aggregation */ + ret = ieee80211_ht_agg_queue_add(local, sta, tid); + + /* case no queue is available to aggregation + * don't switch to aggregation */ + if (ret) { +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "BA request denied - queue unavailable for" + " tid %d\n", tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + goto start_ba_err; + } + sdata = sta->sdata; + + /* Ok, the Addba frame hasn't been sent yet, but if the driver calls the + * call back right away, it must see that the flow has begun */ + *state |= HT_ADDBA_REQUESTED_MSK; + + if (local->ops->ampdu_action) + ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START, + ra, tid, &start_seq_num); + + if (ret) { + /* No need to requeue the packets in the agg queue, since we + * held the tx lock: no packet could be enqueued to the newly + * allocated queue */ + ieee80211_ht_agg_queue_remove(local, sta, tid, 0); +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "BA request denied - HW unavailable for" + " tid %d\n", tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + *state = HT_AGG_STATE_IDLE; + goto start_ba_err; + } + + /* Will put all the packets in the new SW queue */ + ieee80211_requeue(local, ieee802_1d_to_ac[tid]); + spin_unlock_bh(&local->mdev->queue_lock); + + /* send an addBA request */ + sta->ampdu_mlme.dialog_token_allocator++; + sta->ampdu_mlme.tid_tx[tid]->dialog_token = + sta->ampdu_mlme.dialog_token_allocator; + sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num; + + ieee80211_send_addba_request(sta->sdata->dev, ra, tid, + sta->ampdu_mlme.tid_tx[tid]->dialog_token, + sta->ampdu_mlme.tid_tx[tid]->ssn, + 0x40, 5000); + + /* activate the timer for the recipient's addBA response */ + sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires = + jiffies + ADDBA_RESP_INTERVAL; + add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); + printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid); + goto start_ba_exit; + +start_ba_err: + kfree(sta->ampdu_mlme.tid_tx[tid]); + sta->ampdu_mlme.tid_tx[tid] = NULL; + spin_unlock_bh(&local->mdev->queue_lock); + ret = -EBUSY; +start_ba_exit: + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + rcu_read_unlock(); + return ret; +} +EXPORT_SYMBOL(ieee80211_start_tx_ba_session); + +int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, + u8 *ra, u16 tid, + enum ieee80211_back_parties initiator) +{ + struct ieee80211_local *local = hw_to_local(hw); + struct sta_info *sta; + u8 *state; + int ret = 0; + DECLARE_MAC_BUF(mac); + + if (tid >= STA_TID_NUM) + return -EINVAL; + + rcu_read_lock(); + sta = sta_info_get(local, ra); + if (!sta) { + rcu_read_unlock(); + return -ENOENT; + } + + /* check if the TID is in aggregation */ + state = &sta->ampdu_mlme.tid_state_tx[tid]; + spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); + + if (*state != HT_AGG_STATE_OPERATIONAL) { + ret = -ENOENT; + goto stop_BA_exit; + } + +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n", + print_mac(mac, ra), tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + + ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]); + + *state = HT_AGG_STATE_REQ_STOP_BA_MSK | + (initiator << HT_AGG_STATE_INITIATOR_SHIFT); + + if (local->ops->ampdu_action) + ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP, + ra, tid, NULL); + + /* case HW denied going back to legacy */ + if (ret) { + WARN_ON(ret != -EBUSY); + *state = HT_AGG_STATE_OPERATIONAL; + ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); + goto stop_BA_exit; + } + +stop_BA_exit: + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + rcu_read_unlock(); + return ret; +} +EXPORT_SYMBOL(ieee80211_stop_tx_ba_session); + +void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) +{ + struct ieee80211_local *local = hw_to_local(hw); + struct sta_info *sta; + u8 *state; + DECLARE_MAC_BUF(mac); + + if (tid >= STA_TID_NUM) { + printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", + tid, STA_TID_NUM); + return; + } + + rcu_read_lock(); + sta = sta_info_get(local, ra); + if (!sta) { + rcu_read_unlock(); + printk(KERN_DEBUG "Could not find station: %s\n", + print_mac(mac, ra)); + return; + } + + state = &sta->ampdu_mlme.tid_state_tx[tid]; + spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); + + if (!(*state & HT_ADDBA_REQUESTED_MSK)) { + printk(KERN_DEBUG "addBA was not requested yet, state is %d\n", + *state); + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + rcu_read_unlock(); + return; + } + + WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK); + + *state |= HT_ADDBA_DRV_READY_MSK; + + if (*state == HT_AGG_STATE_OPERATIONAL) { + printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); + ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); + } + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + rcu_read_unlock(); +} +EXPORT_SYMBOL(ieee80211_start_tx_ba_cb); + +void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) +{ + struct ieee80211_local *local = hw_to_local(hw); + struct sta_info *sta; + u8 *state; + int agg_queue; + DECLARE_MAC_BUF(mac); + + if (tid >= STA_TID_NUM) { + printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n", + tid, STA_TID_NUM); + return; + } + +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n", + print_mac(mac, ra), tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + + rcu_read_lock(); + sta = sta_info_get(local, ra); + if (!sta) { + printk(KERN_DEBUG "Could not find station: %s\n", + print_mac(mac, ra)); + rcu_read_unlock(); + return; + } + state = &sta->ampdu_mlme.tid_state_tx[tid]; + + spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); + if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { + printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + rcu_read_unlock(); + return; + } + + if (*state & HT_AGG_STATE_INITIATOR_MSK) + ieee80211_send_delba(sta->sdata->dev, ra, tid, + WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE); + + agg_queue = sta->tid_to_tx_q[tid]; + + /* avoid ordering issues: we are the only one that can modify + * the content of the qdiscs */ + spin_lock_bh(&local->mdev->queue_lock); + /* remove the queue for this aggregation */ + ieee80211_ht_agg_queue_remove(local, sta, tid, 1); + spin_unlock_bh(&local->mdev->queue_lock); + + /* we just requeued the all the frames that were in the removed + * queue, and since we might miss a softirq we do netif_schedule. + * ieee80211_wake_queue is not used here as this queue is not + * necessarily stopped */ + netif_schedule(local->mdev); + *state = HT_AGG_STATE_IDLE; + sta->ampdu_mlme.addba_req_num[tid] = 0; + kfree(sta->ampdu_mlme.tid_tx[tid]); + sta->ampdu_mlme.tid_tx[tid] = NULL; + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + + rcu_read_unlock(); +} +EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb); + +void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, + const u8 *ra, u16 tid) +{ + struct ieee80211_local *local = hw_to_local(hw); + struct ieee80211_ra_tid *ra_tid; + struct sk_buff *skb = dev_alloc_skb(0); + + if (unlikely(!skb)) { + if (net_ratelimit()) + printk(KERN_WARNING "%s: Not enough memory, " + "dropping start BA session", skb->dev->name); + return; + } + ra_tid = (struct ieee80211_ra_tid *) &skb->cb; + memcpy(&ra_tid->ra, ra, ETH_ALEN); + ra_tid->tid = tid; + + skb->pkt_type = IEEE80211_ADDBA_MSG; + skb_queue_tail(&local->skb_queue, skb); + tasklet_schedule(&local->tasklet); +} +EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe); + +void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, + const u8 *ra, u16 tid) +{ + struct ieee80211_local *local = hw_to_local(hw); + struct ieee80211_ra_tid *ra_tid; + struct sk_buff *skb = dev_alloc_skb(0); + + if (unlikely(!skb)) { + if (net_ratelimit()) + printk(KERN_WARNING "%s: Not enough memory, " + "dropping stop BA session", skb->dev->name); + return; + } + ra_tid = (struct ieee80211_ra_tid *) &skb->cb; + memcpy(&ra_tid->ra, ra, ETH_ALEN); + ra_tid->tid = tid; + + skb->pkt_type = IEEE80211_DELBA_MSG; + skb_queue_tail(&local->skb_queue, skb); + tasklet_schedule(&local->tasklet); +} +EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe); + static void ieee80211_set_multicast_list(struct net_device *dev) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); @@ -477,41 +953,6 @@ void ieee80211_if_setup(struct net_device *dev) dev->destructor = ieee80211_if_free; } -/* WDS specialties */ - -int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct sta_info *sta; - DECLARE_MAC_BUF(mac); - - if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0) - return 0; - - /* Create STA entry for the new peer */ - sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL); - if (!sta) - return -ENOMEM; - sta_info_put(sta); - - /* Remove STA entry for the old peer */ - sta = sta_info_get(local, sdata->u.wds.remote_addr); - if (sta) { - sta_info_free(sta); - sta_info_put(sta); - } else { - printk(KERN_DEBUG "%s: could not find STA entry for WDS link " - "peer %s\n", - dev->name, print_mac(mac, sdata->u.wds.remote_addr)); - } - - /* Update WDS link data */ - memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN); - - return 0; -} - /* everything else */ static int __ieee80211_if_config(struct net_device *dev, @@ -532,6 +973,9 @@ static int __ieee80211_if_config(struct net_device *dev, conf.bssid = sdata->u.sta.bssid; conf.ssid = sdata->u.sta.ssid; conf.ssid_len = sdata->u.sta.ssid_len; + } else if (ieee80211_vif_is_mesh(&sdata->vif)) { + conf.beacon = beacon; + ieee80211_start_mesh(dev); } else if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { conf.ssid = sdata->u.ap.ssid; conf.ssid_len = sdata->u.ap.ssid_len; @@ -544,6 +988,11 @@ static int __ieee80211_if_config(struct net_device *dev, int ieee80211_if_config(struct net_device *dev) { + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + if (sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT && + (local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) + return ieee80211_if_config_beacon(dev); return __ieee80211_if_config(dev, NULL, NULL); } @@ -565,37 +1014,28 @@ int ieee80211_if_config_beacon(struct net_device *dev) int ieee80211_hw_config(struct ieee80211_local *local) { - struct ieee80211_hw_mode *mode; struct ieee80211_channel *chan; int ret = 0; - if (local->sta_sw_scanning) { + if (local->sta_sw_scanning) chan = local->scan_channel; - mode = local->scan_hw_mode; - } else { + else chan = local->oper_channel; - mode = local->oper_hw_mode; - } - local->hw.conf.channel = chan->chan; - local->hw.conf.channel_val = chan->val; - if (!local->hw.conf.power_level) { - local->hw.conf.power_level = chan->power_level; - } else { - local->hw.conf.power_level = min(chan->power_level, - local->hw.conf.power_level); - } - local->hw.conf.freq = chan->freq; - local->hw.conf.phymode = mode->mode; - local->hw.conf.antenna_max = chan->antenna_max; - local->hw.conf.chan = chan; - local->hw.conf.mode = mode; + local->hw.conf.channel = chan; + + if (!local->hw.conf.power_level) + local->hw.conf.power_level = chan->max_power; + else + local->hw.conf.power_level = min(chan->max_power, + local->hw.conf.power_level); + + local->hw.conf.max_antenna_gain = chan->max_antenna_gain; #ifdef CONFIG_MAC80211_VERBOSE_DEBUG - printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d " - "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq, - local->hw.conf.phymode); -#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ + printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n", + wiphy_name(local->hw.wiphy), chan->center_freq); +#endif if (local->open_count) ret = local->ops->config(local_to_hw(local), &local->hw.conf); @@ -604,52 +1044,69 @@ int ieee80211_hw_config(struct ieee80211_local *local) } /** - * ieee80211_hw_config_ht should be used only after legacy configuration - * has been determined, as ht configuration depends upon the hardware's - * HT abilities for a _specific_ band. + * ieee80211_handle_ht should be used only after legacy configuration + * has been determined namely band, as ht configuration depends upon + * the hardware's HT abilities for a _specific_ band. */ -int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht, +u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht, struct ieee80211_ht_info *req_ht_cap, struct ieee80211_ht_bss_info *req_bss_cap) { struct ieee80211_conf *conf = &local->hw.conf; - struct ieee80211_hw_mode *mode = conf->mode; + struct ieee80211_supported_band *sband; + struct ieee80211_ht_info ht_conf; + struct ieee80211_ht_bss_info ht_bss_conf; int i; + u32 changed = 0; + + sband = local->hw.wiphy->bands[conf->channel->band]; /* HT is not supported */ - if (!mode->ht_info.ht_supported) { + if (!sband->ht_info.ht_supported) { conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; - return -EOPNOTSUPP; + return 0; } - /* disable HT */ - if (!enable_ht) { - conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; - } else { + memset(&ht_conf, 0, sizeof(struct ieee80211_ht_info)); + memset(&ht_bss_conf, 0, sizeof(struct ieee80211_ht_bss_info)); + + if (enable_ht) { + if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) + changed |= BSS_CHANGED_HT; + conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE; - conf->ht_conf.cap = req_ht_cap->cap & mode->ht_info.cap; - conf->ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); - conf->ht_conf.cap |= - mode->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; - conf->ht_bss_conf.primary_channel = - req_bss_cap->primary_channel; - conf->ht_bss_conf.bss_cap = req_bss_cap->bss_cap; - conf->ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; + ht_conf.ht_supported = 1; + + ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap; + ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS); + ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS; + for (i = 0; i < SUPP_MCS_SET_LEN; i++) - conf->ht_conf.supp_mcs_set[i] = - mode->ht_info.supp_mcs_set[i] & - req_ht_cap->supp_mcs_set[i]; - - /* In STA mode, this gives us indication - * to the AP's mode of operation */ - conf->ht_conf.ht_supported = 1; - conf->ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; - conf->ht_conf.ampdu_density = req_ht_cap->ampdu_density; + ht_conf.supp_mcs_set[i] = + sband->ht_info.supp_mcs_set[i] & + req_ht_cap->supp_mcs_set[i]; + + ht_bss_conf.primary_channel = req_bss_cap->primary_channel; + ht_bss_conf.bss_cap = req_bss_cap->bss_cap; + ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode; + + ht_conf.ampdu_factor = req_ht_cap->ampdu_factor; + ht_conf.ampdu_density = req_ht_cap->ampdu_density; + + /* if bss configuration changed store the new one */ + if (memcmp(&conf->ht_conf, &ht_conf, sizeof(ht_conf)) || + memcmp(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf))) { + changed |= BSS_CHANGED_HT; + memcpy(&conf->ht_conf, &ht_conf, sizeof(ht_conf)); + memcpy(&conf->ht_bss_conf, &ht_bss_conf, sizeof(ht_bss_conf)); + } + } else { + if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) + changed |= BSS_CHANGED_HT; + conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE; } - local->ops->conf_ht(local_to_hw(local), &local->hw.conf); - - return 0; + return changed; } void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, @@ -725,6 +1182,7 @@ static void ieee80211_tasklet_handler(unsigned long data) struct sk_buff *skb; struct ieee80211_rx_status rx_status; struct ieee80211_tx_status *tx_status; + struct ieee80211_ra_tid *ra_tid; while ((skb = skb_dequeue(&local->skb_queue)) || (skb = skb_dequeue(&local->skb_queue_unreliable))) { @@ -745,6 +1203,18 @@ static void ieee80211_tasklet_handler(unsigned long data) skb, tx_status); kfree(tx_status); break; + case IEEE80211_DELBA_MSG: + ra_tid = (struct ieee80211_ra_tid *) &skb->cb; + ieee80211_stop_tx_ba_cb(local_to_hw(local), + ra_tid->ra, ra_tid->tid); + dev_kfree_skb(skb); + break; + case IEEE80211_ADDBA_MSG: + ra_tid = (struct ieee80211_ra_tid *) &skb->cb; + ieee80211_start_tx_ba_cb(local_to_hw(local), + ra_tid->ra, ra_tid->tid); + dev_kfree_skb(skb); + break ; default: /* should never get here! */ printk(KERN_ERR "%s: Unknown message type (%d)\n", wiphy_name(local->hw.wiphy), skb->pkt_type); @@ -822,6 +1292,77 @@ no_key: } } +static void ieee80211_handle_filtered_frame(struct ieee80211_local *local, + struct sta_info *sta, + struct sk_buff *skb, + struct ieee80211_tx_status *status) +{ + sta->tx_filtered_count++; + + /* + * Clear the TX filter mask for this STA when sending the next + * packet. If the STA went to power save mode, this will happen + * happen when it wakes up for the next time. + */ + sta->flags |= WLAN_STA_CLEAR_PS_FILT; + + /* + * This code races in the following way: + * + * (1) STA sends frame indicating it will go to sleep and does so + * (2) hardware/firmware adds STA to filter list, passes frame up + * (3) hardware/firmware processes TX fifo and suppresses a frame + * (4) we get TX status before having processed the frame and + * knowing that the STA has gone to sleep. + * + * This is actually quite unlikely even when both those events are + * processed from interrupts coming in quickly after one another or + * even at the same time because we queue both TX status events and + * RX frames to be processed by a tasklet and process them in the + * same order that they were received or TX status last. Hence, there + * is no race as long as the frame RX is processed before the next TX + * status, which drivers can ensure, see below. + * + * Note that this can only happen if the hardware or firmware can + * actually add STAs to the filter list, if this is done by the + * driver in response to set_tim() (which will only reduce the race + * this whole filtering tries to solve, not completely solve it) + * this situation cannot happen. + * + * To completely solve this race drivers need to make sure that they + * (a) don't mix the irq-safe/not irq-safe TX status/RX processing + * functions and + * (b) always process RX events before TX status events if ordering + * can be unknown, for example with different interrupt status + * bits. + */ + if (sta->flags & WLAN_STA_PS && + skb_queue_len(&sta->tx_filtered) < STA_MAX_TX_BUFFER) { + ieee80211_remove_tx_extra(local, sta->key, skb, + &status->control); + skb_queue_tail(&sta->tx_filtered, skb); + return; + } + + if (!(sta->flags & WLAN_STA_PS) && + !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { + /* Software retry the packet once */ + status->control.flags |= IEEE80211_TXCTL_REQUEUE; + ieee80211_remove_tx_extra(local, sta->key, skb, + &status->control); + dev_queue_xmit(skb); + return; + } + + if (net_ratelimit()) + printk(KERN_DEBUG "%s: dropped TX filtered frame, " + "queue_len=%d PS=%d @%lu\n", + wiphy_name(local->hw.wiphy), + skb_queue_len(&sta->tx_filtered), + !!(sta->flags & WLAN_STA_PS), jiffies); + dev_kfree_skb(skb); +} + void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, struct ieee80211_tx_status *status) { @@ -831,7 +1372,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, u16 frag, type; struct ieee80211_tx_status_rtap_hdr *rthdr; struct ieee80211_sub_if_data *sdata; - int monitors; + struct net_device *prev_dev = NULL; if (!status) { printk(KERN_ERR @@ -841,18 +1382,24 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, return; } + rcu_read_lock(); + if (status->excessive_retries) { struct sta_info *sta; sta = sta_info_get(local, hdr->addr1); if (sta) { if (sta->flags & WLAN_STA_PS) { - /* The STA is in power save mode, so assume + /* + * The STA is in power save mode, so assume * that this TX packet failed because of that. */ status->excessive_retries = 0; status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; + ieee80211_handle_filtered_frame(local, sta, + skb, status); + rcu_read_unlock(); + return; } - sta_info_put(sta); } } @@ -860,53 +1407,16 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, struct sta_info *sta; sta = sta_info_get(local, hdr->addr1); if (sta) { - sta->tx_filtered_count++; - - /* Clear the TX filter mask for this STA when sending - * the next packet. If the STA went to power save mode, - * this will happen when it is waking up for the next - * time. */ - sta->clear_dst_mask = 1; - - /* TODO: Is the WLAN_STA_PS flag always set here or is - * the race between RX and TX status causing some - * packets to be filtered out before 80211.o gets an - * update for PS status? This seems to be the case, so - * no changes are likely to be needed. */ - if (sta->flags & WLAN_STA_PS && - skb_queue_len(&sta->tx_filtered) < - STA_MAX_TX_BUFFER) { - ieee80211_remove_tx_extra(local, sta->key, - skb, - &status->control); - skb_queue_tail(&sta->tx_filtered, skb); - } else if (!(sta->flags & WLAN_STA_PS) && - !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { - /* Software retry the packet once */ - status->control.flags |= IEEE80211_TXCTL_REQUEUE; - ieee80211_remove_tx_extra(local, sta->key, - skb, - &status->control); - dev_queue_xmit(skb); - } else { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: dropped TX " - "filtered frame queue_len=%d " - "PS=%d @%lu\n", - wiphy_name(local->hw.wiphy), - skb_queue_len( - &sta->tx_filtered), - !!(sta->flags & WLAN_STA_PS), - jiffies); - } - dev_kfree_skb(skb); - } - sta_info_put(sta); + ieee80211_handle_filtered_frame(local, sta, skb, + status); + rcu_read_unlock(); return; } } else rate_control_tx_status(local->mdev, skb, status); + rcu_read_unlock(); + ieee80211_led_tx(local, 0); /* SNMP counters @@ -944,7 +1454,11 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, /* this was a transmitted frame, but now we want to reuse it */ skb_orphan(skb); - if (!local->monitors) { + /* + * This is a bit racy but we can avoid a lot of work + * with this test... + */ + if (!local->monitors && !local->cooked_mntrs) { dev_kfree_skb(skb); return; } @@ -978,51 +1492,44 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, rthdr->data_retries = status->retry_count; + /* XXX: is this sufficient for BPF? */ + skb_set_mac_header(skb, 0); + skb->ip_summed = CHECKSUM_UNNECESSARY; + skb->pkt_type = PACKET_OTHERHOST; + skb->protocol = htons(ETH_P_802_2); + memset(skb->cb, 0, sizeof(skb->cb)); + rcu_read_lock(); - monitors = local->monitors; list_for_each_entry_rcu(sdata, &local->interfaces, list) { - /* - * Using the monitors counter is possibly racy, but - * if the value is wrong we simply either clone the skb - * once too much or forget sending it to one monitor iface - * The latter case isn't nice but fixing the race is much - * more complicated. - */ - if (!monitors || !skb) - goto out; - if (sdata->vif.type == IEEE80211_IF_TYPE_MNTR) { if (!netif_running(sdata->dev)) continue; - monitors--; - if (monitors) + + if (prev_dev) { skb2 = skb_clone(skb, GFP_ATOMIC); - else - skb2 = NULL; - skb->dev = sdata->dev; - /* XXX: is this sufficient for BPF? */ - skb_set_mac_header(skb, 0); - skb->ip_summed = CHECKSUM_UNNECESSARY; - skb->pkt_type = PACKET_OTHERHOST; - skb->protocol = htons(ETH_P_802_2); - memset(skb->cb, 0, sizeof(skb->cb)); - netif_rx(skb); - skb = skb2; + if (skb2) { + skb2->dev = prev_dev; + netif_rx(skb2); + } + } + + prev_dev = sdata->dev; } } - out: + if (prev_dev) { + skb->dev = prev_dev; + netif_rx(skb); + skb = NULL; + } rcu_read_unlock(); - if (skb) - dev_kfree_skb(skb); + dev_kfree_skb(skb); } EXPORT_SYMBOL(ieee80211_tx_status); struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, const struct ieee80211_ops *ops) { - struct net_device *mdev; struct ieee80211_local *local; - struct ieee80211_sub_if_data *sdata; int priv_size; struct wiphy *wiphy; @@ -1068,25 +1575,8 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, BUG_ON(!ops->configure_filter); local->ops = ops; - /* for now, mdev needs sub_if_data :/ */ - mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), - "wmaster%d", ether_setup); - if (!mdev) { - wiphy_free(wiphy); - return NULL; - } - - sdata = IEEE80211_DEV_TO_SUB_IF(mdev); - mdev->ieee80211_ptr = &sdata->wdev; - sdata->wdev.wiphy = wiphy; - local->hw.queues = 1; /* default */ - local->mdev = mdev; - local->rx_pre_handlers = ieee80211_rx_pre_handlers; - local->rx_handlers = ieee80211_rx_handlers; - local->tx_handlers = ieee80211_tx_handlers; - local->bridge_packets = 1; local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; @@ -1095,33 +1585,14 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, local->long_retry_limit = 4; local->hw.conf.radio_enabled = 1; - local->enabled_modes = ~0; - - INIT_LIST_HEAD(&local->modes_list); - INIT_LIST_HEAD(&local->interfaces); + spin_lock_init(&local->key_lock); + INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); - ieee80211_rx_bss_list_init(mdev); sta_info_init(local); - mdev->hard_start_xmit = ieee80211_master_start_xmit; - mdev->open = ieee80211_master_open; - mdev->stop = ieee80211_master_stop; - mdev->type = ARPHRD_IEEE80211; - mdev->header_ops = &ieee80211_header_ops; - mdev->set_multicast_list = ieee80211_master_set_multicast_list; - - sdata->vif.type = IEEE80211_IF_TYPE_AP; - sdata->dev = mdev; - sdata->local = local; - sdata->u.ap.force_unicast_rateidx = -1; - sdata->u.ap.max_ratectrl_rateidx = -1; - ieee80211_if_sdata_init(sdata); - /* no RCU needed since we're still during init phase */ - list_add_tail(&sdata->list, &local->interfaces); - tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, (unsigned long)local); tasklet_disable(&local->tx_pending_tasklet); @@ -1143,11 +1614,63 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) struct ieee80211_local *local = hw_to_local(hw); const char *name; int result; + enum ieee80211_band band; + struct net_device *mdev; + struct ieee80211_sub_if_data *sdata; + + /* + * generic code guarantees at least one band, + * set this very early because much code assumes + * that hw.conf.channel is assigned + */ + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + struct ieee80211_supported_band *sband; + + sband = local->hw.wiphy->bands[band]; + if (sband) { + /* init channel we're on */ + local->hw.conf.channel = + local->oper_channel = + local->scan_channel = &sband->channels[0]; + break; + } + } result = wiphy_register(local->hw.wiphy); if (result < 0) return result; + /* for now, mdev needs sub_if_data :/ */ + mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), + "wmaster%d", ether_setup); + if (!mdev) + goto fail_mdev_alloc; + + sdata = IEEE80211_DEV_TO_SUB_IF(mdev); + mdev->ieee80211_ptr = &sdata->wdev; + sdata->wdev.wiphy = local->hw.wiphy; + + local->mdev = mdev; + + ieee80211_rx_bss_list_init(mdev); + + mdev->hard_start_xmit = ieee80211_master_start_xmit; + mdev->open = ieee80211_master_open; + mdev->stop = ieee80211_master_stop; + mdev->type = ARPHRD_IEEE80211; + mdev->header_ops = &ieee80211_header_ops; + mdev->set_multicast_list = ieee80211_master_set_multicast_list; + + sdata->vif.type = IEEE80211_IF_TYPE_AP; + sdata->dev = mdev; + sdata->local = local; + sdata->u.ap.force_unicast_rateidx = -1; + sdata->u.ap.max_ratectrl_rateidx = -1; + ieee80211_if_sdata_init(sdata); + + /* no RCU needed since we're still during init phase */ + list_add_tail(&sdata->list, &local->interfaces); + name = wiphy_dev(local->hw.wiphy)->driver->name; local->hw.workqueue = create_singlethread_workqueue(name); if (!local->hw.workqueue) { @@ -1215,7 +1738,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) /* add one default STA interface */ result = ieee80211_if_add(local->mdev, "wlan%d", NULL, - IEEE80211_IF_TYPE_STA); + IEEE80211_IF_TYPE_STA, NULL); if (result) printk(KERN_WARNING "%s: Failed to add default virtual iface\n", wiphy_name(local->hw.wiphy)); @@ -1239,49 +1762,18 @@ fail_sta_info: debugfs_hw_del(local); destroy_workqueue(local->hw.workqueue); fail_workqueue: + ieee80211_if_free(local->mdev); + local->mdev = NULL; +fail_mdev_alloc: wiphy_unregister(local->hw.wiphy); return result; } EXPORT_SYMBOL(ieee80211_register_hw); -int ieee80211_register_hwmode(struct ieee80211_hw *hw, - struct ieee80211_hw_mode *mode) -{ - struct ieee80211_local *local = hw_to_local(hw); - struct ieee80211_rate *rate; - int i; - - INIT_LIST_HEAD(&mode->list); - list_add_tail(&mode->list, &local->modes_list); - - local->hw_modes |= (1 << mode->mode); - for (i = 0; i < mode->num_rates; i++) { - rate = &(mode->rates[i]); - rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate; - } - ieee80211_prepare_rates(local, mode); - - if (!local->oper_hw_mode) { - /* Default to this mode */ - local->hw.conf.phymode = mode->mode; - local->oper_hw_mode = local->scan_hw_mode = mode; - local->oper_channel = local->scan_channel = &mode->channels[0]; - local->hw.conf.mode = local->oper_hw_mode; - local->hw.conf.chan = local->oper_channel; - } - - if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED)) - ieee80211_set_default_regdomain(mode); - - return 0; -} -EXPORT_SYMBOL(ieee80211_register_hwmode); - void ieee80211_unregister_hw(struct ieee80211_hw *hw) { struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_sub_if_data *sdata, *tmp; - int i; tasklet_kill(&local->tx_pending_tasklet); tasklet_kill(&local->tasklet); @@ -1322,11 +1814,6 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw) rate_control_deinitialize(local); debugfs_hw_del(local); - for (i = 0; i < NUM_IEEE80211_MODES; i++) { - kfree(local->supp_rates[i]); - kfree(local->basic_rates[i]); - } - if (skb_queue_len(&local->skb_queue) || skb_queue_len(&local->skb_queue_unreliable)) printk(KERN_WARNING "%s: skb_queue not empty\n", @@ -1338,6 +1825,8 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw) wiphy_unregister(local->hw.wiphy); ieee80211_wep_free(local); ieee80211_led_exit(local); + ieee80211_if_free(local->mdev); + local->mdev = NULL; } EXPORT_SYMBOL(ieee80211_unregister_hw); @@ -1345,7 +1834,6 @@ void ieee80211_free_hw(struct ieee80211_hw *hw) { struct ieee80211_local *local = hw_to_local(hw); - ieee80211_if_free(local->mdev); wiphy_free(local->hw.wiphy); } EXPORT_SYMBOL(ieee80211_free_hw); @@ -1357,13 +1845,9 @@ static int __init ieee80211_init(void) BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); - ret = rc80211_simple_init(); - if (ret) - goto out; - ret = rc80211_pid_init(); if (ret) - goto out_cleanup_simple; + goto out; ret = ieee80211_wme_register(); if (ret) { @@ -1373,23 +1857,28 @@ static int __init ieee80211_init(void) } ieee80211_debugfs_netdev_init(); - ieee80211_regdomain_init(); return 0; out_cleanup_pid: rc80211_pid_exit(); - out_cleanup_simple: - rc80211_simple_exit(); out: return ret; } static void __exit ieee80211_exit(void) { - rc80211_simple_exit(); rc80211_pid_exit(); + /* + * For key todo, it'll be empty by now but the work + * might still be scheduled. + */ + flush_scheduled_work(); + + if (mesh_allocated) + ieee80211s_stop(); + ieee80211_wme_unregister(); ieee80211_debugfs_netdev_exit(); } diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c new file mode 100644 index 0000000..594a335 --- /dev/null +++ b/net/mac80211/mesh.c @@ -0,0 +1,449 @@ +/* + * Copyright (c) 2008 open80211s Ltd. + * Authors: Luis Carlos Cobo <luisca@cozybit.com> + * Javier Cardona <javier@cozybit.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "ieee80211_i.h" +#include "mesh.h" + +#define PP_OFFSET 1 /* Path Selection Protocol */ +#define PM_OFFSET 5 /* Path Selection Metric */ +#define CC_OFFSET 9 /* Congestion Control Mode */ +#define CAPAB_OFFSET 17 +#define ACCEPT_PLINKS 0x80 + +int mesh_allocated; +static struct kmem_cache *rm_cache; + +void ieee80211s_init(void) +{ + mesh_pathtbl_init(); + mesh_allocated = 1; + rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry), + 0, 0, NULL); +} + +void ieee80211s_stop(void) +{ + mesh_pathtbl_unregister(); + kmem_cache_destroy(rm_cache); +} + +/** + * mesh_matches_local - check if the config of a mesh point matches ours + * + * @ie: information elements of a management frame from the mesh peer + * @dev: local mesh interface + * + * This function checks if the mesh configuration of a mesh point matches the + * local mesh configuration, i.e. if both nodes belong to the same mesh network. + */ +bool mesh_matches_local(struct ieee802_11_elems *ie, struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_if_sta *sta = &sdata->u.sta; + + /* + * As support for each feature is added, check for matching + * - On mesh config capabilities + * - Power Save Support En + * - Sync support enabled + * - Sync support active + * - Sync support required from peer + * - MDA enabled + * - Power management control on fc + */ + if (sta->mesh_id_len == ie->mesh_id_len && + memcmp(sta->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 && + memcmp(sta->mesh_pp_id, ie->mesh_config + PP_OFFSET, 4) == 0 && + memcmp(sta->mesh_pm_id, ie->mesh_config + PM_OFFSET, 4) == 0 && + memcmp(sta->mesh_cc_id, ie->mesh_config + CC_OFFSET, 4) == 0) + return true; + + return false; +} + +/** + * mesh_peer_accepts_plinks - check if an mp is willing to establish peer links + * + * @ie: information elements of a management frame from the mesh peer + * @dev: local mesh interface + */ +bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie, + struct net_device *dev) +{ + return (*(ie->mesh_config + CAPAB_OFFSET) & ACCEPT_PLINKS) != 0; +} + +/** + * mesh_accept_plinks_update: update accepting_plink in local mesh beacons + * + * @sdata: mesh interface in which mesh beacons are going to be updated + */ +void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata) +{ + bool free_plinks; + + /* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0, + * the mesh interface might be able to establish plinks with peers that + * are already on the table but are not on PLINK_ESTAB state. However, + * in general the mesh interface is not accepting peer link requests + * from new peers, and that must be reflected in the beacon + */ + free_plinks = mesh_plink_availables(sdata); + + if (free_plinks != sdata->u.sta.accepting_plinks) + ieee80211_sta_timer((unsigned long) sdata); +} + +void mesh_ids_set_default(struct ieee80211_if_sta *sta) +{ + u8 def_id[4] = {0x00, 0x0F, 0xAC, 0xff}; + + memcpy(sta->mesh_pp_id, def_id, 4); + memcpy(sta->mesh_pm_id, def_id, 4); + memcpy(sta->mesh_cc_id, def_id, 4); +} + +int mesh_rmc_init(struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + int i; + + sdata->u.sta.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL); + if (!sdata->u.sta.rmc) + return -ENOMEM; + sdata->u.sta.rmc->idx_mask = RMC_BUCKETS - 1; + for (i = 0; i < RMC_BUCKETS; i++) + INIT_LIST_HEAD(&sdata->u.sta.rmc->bucket[i].list); + return 0; +} + +void mesh_rmc_free(struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_rmc *rmc = sdata->u.sta.rmc; + struct rmc_entry *p, *n; + int i; + + if (!sdata->u.sta.rmc) + return; + + for (i = 0; i < RMC_BUCKETS; i++) + list_for_each_entry_safe(p, n, &rmc->bucket[i].list, list) { + list_del(&p->list); + kmem_cache_free(rm_cache, p); + } + + kfree(rmc); + sdata->u.sta.rmc = NULL; +} + +/** + * mesh_rmc_check - Check frame in recent multicast cache and add if absent. + * + * @sa: source address + * @mesh_hdr: mesh_header + * + * Returns: 0 if the frame is not in the cache, nonzero otherwise. + * + * Checks using the source address and the mesh sequence number if we have + * received this frame lately. If the frame is not in the cache, it is added to + * it. + */ +int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr, + struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_rmc *rmc = sdata->u.sta.rmc; + u32 seqnum = 0; + int entries = 0; + u8 idx; + struct rmc_entry *p, *n; + + /* Don't care about endianness since only match matters */ + memcpy(&seqnum, mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum)); + idx = mesh_hdr->seqnum[0] & rmc->idx_mask; + list_for_each_entry_safe(p, n, &rmc->bucket[idx].list, list) { + ++entries; + if (time_after(jiffies, p->exp_time) || + (entries == RMC_QUEUE_MAX_LEN)) { + list_del(&p->list); + kmem_cache_free(rm_cache, p); + --entries; + } else if ((seqnum == p->seqnum) + && (memcmp(sa, p->sa, ETH_ALEN) == 0)) + return -1; + } + + p = kmem_cache_alloc(rm_cache, GFP_ATOMIC); + if (!p) { + printk(KERN_DEBUG "o11s: could not allocate RMC entry\n"); + return 0; + } + p->seqnum = seqnum; + p->exp_time = jiffies + RMC_TIMEOUT; + memcpy(p->sa, sa, ETH_ALEN); + list_add(&p->list, &rmc->bucket[idx].list); + return 0; +} + +void mesh_mgmt_ies_add(struct sk_buff *skb, struct net_device *dev) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_supported_band *sband; + u8 *pos; + int len, i, rate; + + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + len = sband->n_bitrates; + if (len > 8) + len = 8; + pos = skb_put(skb, len + 2); + *pos++ = WLAN_EID_SUPP_RATES; + *pos++ = len; + for (i = 0; i < len; i++) { + rate = sband->bitrates[i].bitrate; + *pos++ = (u8) (rate / 5); + } + + if (sband->n_bitrates > len) { + pos = skb_put(skb, sband->n_bitrates - len + 2); + *pos++ = WLAN_EID_EXT_SUPP_RATES; + *pos++ = sband->n_bitrates - len; + for (i = len; i < sband->n_bitrates; i++) { + rate = sband->bitrates[i].bitrate; + *pos++ = (u8) (rate / 5); + } + } + + pos = skb_put(skb, 2 + sdata->u.sta.mesh_id_len); + *pos++ = WLAN_EID_MESH_ID; + *pos++ = sdata->u.sta.mesh_id_len; + if (sdata->u.sta.mesh_id_len) + memcpy(pos, sdata->u.sta.mesh_id, sdata->u.sta.mesh_id_len); + + pos = skb_put(skb, 21); + *pos++ = WLAN_EID_MESH_CONFIG; + *pos++ = MESH_CFG_LEN; + /* Version */ + *pos++ = 1; + + /* Active path selection protocol ID */ + memcpy(pos, sdata->u.sta.mesh_pp_id, 4); + pos += 4; + + /* Active path selection metric ID */ + memcpy(pos, sdata->u.sta.mesh_pm_id, 4); + pos += 4; + + /* Congestion control mode identifier */ + memcpy(pos, sdata->u.sta.mesh_cc_id, 4); + pos += 4; + + /* Channel precedence: + * Not running simple channel unification protocol + */ + memset(pos, 0x00, 4); + pos += 4; + + /* Mesh capability */ + sdata->u.sta.accepting_plinks = mesh_plink_availables(sdata); + *pos++ = sdata->u.sta.accepting_plinks ? ACCEPT_PLINKS : 0x00; + *pos++ = 0x00; + + return; +} + +u32 mesh_table_hash(u8 *addr, struct net_device *dev, struct mesh_table *tbl) +{ + /* Use last four bytes of hw addr and interface index as hash index */ + return jhash_2words(*(u32 *)(addr+2), dev->ifindex, tbl->hash_rnd) + & tbl->hash_mask; +} + +u8 mesh_id_hash(u8 *mesh_id, int mesh_id_len) +{ + if (!mesh_id_len) + return 1; + else if (mesh_id_len == 1) + return (u8) mesh_id[0]; + else + return (u8) (mesh_id[0] + 2 * mesh_id[1]); +} + +struct mesh_table *mesh_table_alloc(int size_order) +{ + int i; + struct mesh_table *newtbl; + + newtbl = kmalloc(sizeof(struct mesh_table), GFP_KERNEL); + if (!newtbl) + return NULL; + + newtbl->hash_buckets = kzalloc(sizeof(struct hlist_head) * + (1 << size_order), GFP_KERNEL); + + if (!newtbl->hash_buckets) { + kfree(newtbl); + return NULL; + } + + newtbl->hashwlock = kmalloc(sizeof(spinlock_t) * + (1 << size_order), GFP_KERNEL); + if (!newtbl->hashwlock) { + kfree(newtbl->hash_buckets); + kfree(newtbl); + return NULL; + } + + newtbl->size_order = size_order; + newtbl->hash_mask = (1 << size_order) - 1; + atomic_set(&newtbl->entries, 0); + get_random_bytes(&newtbl->hash_rnd, + sizeof(newtbl->hash_rnd)); + for (i = 0; i <= newtbl->hash_mask; i++) + spin_lock_init(&newtbl->hashwlock[i]); + + return newtbl; +} + +void mesh_table_free(struct mesh_table *tbl, bool free_leafs) +{ + struct hlist_head *mesh_hash; + struct hlist_node *p, *q; + int i; + + mesh_hash = tbl->hash_buckets; + for (i = 0; i <= tbl->hash_mask; i++) { + spin_lock(&tbl->hashwlock[i]); + hlist_for_each_safe(p, q, &mesh_hash[i]) { + tbl->free_node(p, free_leafs); + atomic_dec(&tbl->entries); + } + spin_unlock(&tbl->hashwlock[i]); + } + kfree(tbl->hash_buckets); + kfree(tbl->hashwlock); + kfree(tbl); +} + +static void ieee80211_mesh_path_timer(unsigned long data) +{ + struct ieee80211_sub_if_data *sdata = + (struct ieee80211_sub_if_data *) data; + struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct ieee80211_local *local = wdev_priv(&sdata->wdev); + + queue_work(local->hw.workqueue, &ifsta->work); +} + +struct mesh_table *mesh_table_grow(struct mesh_table *tbl) +{ + struct mesh_table *newtbl; + struct hlist_head *oldhash; + struct hlist_node *p; + int err = 0; + int i; + + if (atomic_read(&tbl->entries) + < tbl->mean_chain_len * (tbl->hash_mask + 1)) { + err = -EPERM; + goto endgrow; + } + + newtbl = mesh_table_alloc(tbl->size_order + 1); + if (!newtbl) { + err = -ENOMEM; + goto endgrow; + } + + newtbl->free_node = tbl->free_node; + newtbl->mean_chain_len = tbl->mean_chain_len; + newtbl->copy_node = tbl->copy_node; + atomic_set(&newtbl->entries, atomic_read(&tbl->entries)); + + oldhash = tbl->hash_buckets; + for (i = 0; i <= tbl->hash_mask; i++) + hlist_for_each(p, &oldhash[i]) + tbl->copy_node(p, newtbl); + +endgrow: + if (err) + return NULL; + else + return newtbl; +} + +/** + * ieee80211_new_mesh_header - create a new mesh header + * @meshhdr: uninitialized mesh header + * @sdata: mesh interface to be used + * + * Return the header length. + */ +int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr, + struct ieee80211_sub_if_data *sdata) +{ + meshhdr->flags = 0; + meshhdr->ttl = sdata->u.sta.mshcfg.dot11MeshTTL; + + meshhdr->seqnum[0] = sdata->u.sta.mesh_seqnum[0]++; + meshhdr->seqnum[1] = sdata->u.sta.mesh_seqnum[1]; + meshhdr->seqnum[2] = sdata->u.sta.mesh_seqnum[2]; + + if (sdata->u.sta.mesh_seqnum[0] == 0) { + sdata->u.sta.mesh_seqnum[1]++; + if (sdata->u.sta.mesh_seqnum[1] == 0) + sdata->u.sta.mesh_seqnum[2]++; + } + + return 5; +} + +void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_if_sta *ifsta = &sdata->u.sta; + + ifsta->mshcfg.dot11MeshRetryTimeout = MESH_RET_T; + ifsta->mshcfg.dot11MeshConfirmTimeout = MESH_CONF_T; + ifsta->mshcfg.dot11MeshHoldingTimeout = MESH_HOLD_T; + ifsta->mshcfg.dot11MeshMaxRetries = MESH_MAX_RETR; + ifsta->mshcfg.dot11MeshTTL = MESH_TTL; + ifsta->mshcfg.auto_open_plinks = true; + ifsta->mshcfg.dot11MeshMaxPeerLinks = + MESH_MAX_ESTAB_PLINKS; + ifsta->mshcfg.dot11MeshHWMPactivePathTimeout = + MESH_PATH_TIMEOUT; + ifsta->mshcfg.dot11MeshHWMPpreqMinInterval = + MESH_PREQ_MIN_INT; + ifsta->mshcfg.dot11MeshHWMPnetDiameterTraversalTime = + MESH_DIAM_TRAVERSAL_TIME; + ifsta->mshcfg.dot11MeshHWMPmaxPREQretries = + MESH_MAX_PREQ_RETRIES; + ifsta->mshcfg.path_refresh_time = + MESH_PATH_REFRESH_TIME; + ifsta->mshcfg.min_discovery_timeout = + MESH_MIN_DISCOVERY_TIMEOUT; + ifsta->accepting_plinks = true; + ifsta->preq_id = 0; + ifsta->dsn = 0; + atomic_set(&ifsta->mpaths, 0); + mesh_rmc_init(sdata->dev); + ifsta->last_preq = jiffies; + /* Allocate all mesh structures when creating the first mesh interface. */ + if (!mesh_allocated) + ieee80211s_init(); + mesh_ids_set_default(ifsta); + setup_timer(&ifsta->mesh_path_timer, + ieee80211_mesh_path_timer, + (unsigned long) sdata); + INIT_LIST_HEAD(&ifsta->preq_queue.list); + spin_lock_init(&ifsta->mesh_preq_queue_lock); +} diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h new file mode 100644 index 0000000..742003d --- /dev/null +++ b/net/mac80211/mesh.h @@ -0,0 +1,290 @@ +/* + * Copyright (c) 2008 open80211s Ltd. + * Authors: Luis Carlos Cobo <luisca@cozybit.com> + * Javier Cardona <javier@cozybit.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef IEEE80211S_H +#define IEEE80211S_H + +#include <linux/types.h> +#include <linux/jhash.h> +#include "ieee80211_i.h" + + +/* Data structures */ + +/** + * enum mesh_path_flags - mac80211 mesh path flags + * + * + * + * @MESH_PATH_ACTIVE: the mesh path is can be used for forwarding + * @MESH_PATH_RESOLVED: the discovery process is running for this mesh path + * @MESH_PATH_DSN_VALID: the mesh path contains a valid destination sequence + * number + * @MESH_PATH_FIXED: the mesh path has been manually set and should not be + * modified + * @MESH_PATH_RESOLVED: the mesh path can has been resolved + * + * MESH_PATH_RESOLVED and MESH_PATH_DELETE are used by the mesh path timer to + * decide when to stop or cancel the mesh path discovery. + */ +enum mesh_path_flags { + MESH_PATH_ACTIVE = BIT(0), + MESH_PATH_RESOLVING = BIT(1), + MESH_PATH_DSN_VALID = BIT(2), + MESH_PATH_FIXED = BIT(3), + MESH_PATH_RESOLVED = BIT(4), +}; + +/** + * struct mesh_path - mac80211 mesh path structure + * + * @dst: mesh path destination mac address + * @dev: mesh path device + * @next_hop: mesh neighbor to which frames for this destination will be + * forwarded + * @timer: mesh path discovery timer + * @frame_queue: pending queue for frames sent to this destination while the + * path is unresolved + * @dsn: destination sequence number of the destination + * @metric: current metric to this destination + * @hop_count: hops to destination + * @exp_time: in jiffies, when the path will expire or when it expired + * @discovery_timeout: timeout (lapse in jiffies) used for the last discovery + * retry + * @discovery_retries: number of discovery retries + * @flags: mesh path flags, as specified on &enum mesh_path_flags + * @state_lock: mesh pat state lock + * + * + * The combination of dst and dev is unique in the mesh path table. Since the + * next_hop STA is only protected by RCU as well, deleting the STA must also + * remove/substitute the mesh_path structure and wait until that is no longer + * reachable before destroying the STA completely. + */ +struct mesh_path { + u8 dst[ETH_ALEN]; + struct net_device *dev; + struct sta_info *next_hop; + struct timer_list timer; + struct sk_buff_head frame_queue; + struct rcu_head rcu; + u32 dsn; + u32 metric; + u8 hop_count; + unsigned long exp_time; + u32 discovery_timeout; + u8 discovery_retries; + enum mesh_path_flags flags; + spinlock_t state_lock; +}; + +/** + * struct mesh_table + * + * @hash_buckets: array of hash buckets of the table + * @hashwlock: array of locks to protect write operations, one per bucket + * @hash_mask: 2^size_order - 1, used to compute hash idx + * @hash_rnd: random value used for hash computations + * @entries: number of entries in the table + * @free_node: function to free nodes of the table + * @copy_node: fuction to copy nodes of the table + * @size_order: determines size of the table, there will be 2^size_order hash + * buckets + * @mean_chain_len: maximum average length for the hash buckets' list, if it is + * reached, the table will grow + */ +struct mesh_table { + /* Number of buckets will be 2^N */ + struct hlist_head *hash_buckets; + spinlock_t *hashwlock; /* One per bucket, for add/del */ + unsigned int hash_mask; /* (2^size_order) - 1 */ + __u32 hash_rnd; /* Used for hash generation */ + atomic_t entries; /* Up to MAX_MESH_NEIGHBOURS */ + void (*free_node) (struct hlist_node *p, bool free_leafs); + void (*copy_node) (struct hlist_node *p, struct mesh_table *newtbl); + int size_order; + int mean_chain_len; +}; + +/* Recent multicast cache */ +/* RMC_BUCKETS must be a power of 2, maximum 256 */ +#define RMC_BUCKETS 256 +#define RMC_QUEUE_MAX_LEN 4 +#define RMC_TIMEOUT (3 * HZ) + +/** + * struct rmc_entry - entry in the Recent Multicast Cache + * + * @seqnum: mesh sequence number of the frame + * @exp_time: expiration time of the entry, in jiffies + * @sa: source address of the frame + * + * The Recent Multicast Cache keeps track of the latest multicast frames that + * have been received by a mesh interface and discards received multicast frames + * that are found in the cache. + */ +struct rmc_entry { + struct list_head list; + u32 seqnum; + unsigned long exp_time; + u8 sa[ETH_ALEN]; +}; + +struct mesh_rmc { + struct rmc_entry bucket[RMC_BUCKETS]; + u8 idx_mask; +}; + + +/* Mesh IEs constants */ +#define MESH_CFG_LEN 19 + +/* + * MESH_CFG_COMP_LEN Includes: + * - Active path selection protocol ID. + * - Active path selection metric ID. + * - Congestion control mode identifier. + * - Channel precedence. + * Does not include mesh capabilities, which may vary across nodes in the same + * mesh + */ +#define MESH_CFG_CMP_LEN 17 + +/* Default values, timeouts in ms */ +#define MESH_TTL 5 +#define MESH_MAX_RETR 3 +#define MESH_RET_T 100 +#define MESH_CONF_T 100 +#define MESH_HOLD_T 100 + +#define MESH_PATH_TIMEOUT 5000 +/* Minimum interval between two consecutive PREQs originated by the same + * interface + */ +#define MESH_PREQ_MIN_INT 10 +#define MESH_DIAM_TRAVERSAL_TIME 50 +/* Paths will be refreshed if they are closer than PATH_REFRESH_TIME to their + * expiration + */ +#define MESH_PATH_REFRESH_TIME 1000 +#define MESH_MIN_DISCOVERY_TIMEOUT (2 * MESH_DIAM_TRAVERSAL_TIME) + +#define MESH_MAX_PREQ_RETRIES 4 +#define MESH_PATH_EXPIRE (600 * HZ) + +/* Default maximum number of established plinks per interface */ +#define MESH_MAX_ESTAB_PLINKS 32 + +/* Default maximum number of plinks per interface */ +#define MESH_MAX_PLINKS 256 + +/* Maximum number of paths per interface */ +#define MESH_MAX_MPATHS 1024 + +/* Pending ANA approval */ +#define PLINK_CATEGORY 30 +#define MESH_PATH_SEL_CATEGORY 32 + +/* Mesh Header Flags */ +#define IEEE80211S_FLAGS_AE 0x3 + +/* Public interfaces */ +/* Various */ +u8 mesh_id_hash(u8 *mesh_id, int mesh_id_len); +int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr); +int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr, + struct ieee80211_sub_if_data *sdata); +int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr, + struct net_device *dev); +bool mesh_matches_local(struct ieee802_11_elems *ie, struct net_device *dev); +void mesh_ids_set_default(struct ieee80211_if_sta *sta); +void mesh_mgmt_ies_add(struct sk_buff *skb, struct net_device *dev); +void mesh_rmc_free(struct net_device *dev); +int mesh_rmc_init(struct net_device *dev); +void ieee80211s_init(void); +void ieee80211s_stop(void); +void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata); + +/* Mesh paths */ +int mesh_nexthop_lookup(u8 *next_hop, struct sk_buff *skb, + struct net_device *dev); +void mesh_path_start_discovery(struct net_device *dev); +struct mesh_path *mesh_path_lookup(u8 *dst, struct net_device *dev); +struct mesh_path *mesh_path_lookup_by_idx(int idx, struct net_device *dev); +void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop); +void mesh_path_expire(struct net_device *dev); +void mesh_path_flush(struct net_device *dev); +void mesh_rx_path_sel_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt, + size_t len); +int mesh_path_add(u8 *dst, struct net_device *dev); +/* Mesh plinks */ +void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct net_device *dev, + bool add); +bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie, + struct net_device *dev); +void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata); +void mesh_plink_broken(struct sta_info *sta); +void mesh_plink_deactivate(struct sta_info *sta); +int mesh_plink_open(struct sta_info *sta); +int mesh_plink_close(struct sta_info *sta); +void mesh_plink_block(struct sta_info *sta); +void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt, + size_t len, struct ieee80211_rx_status *rx_status); + +/* Private interfaces */ +/* Mesh tables */ +struct mesh_table *mesh_table_alloc(int size_order); +void mesh_table_free(struct mesh_table *tbl, bool free_leafs); +struct mesh_table *mesh_table_grow(struct mesh_table *tbl); +u32 mesh_table_hash(u8 *addr, struct net_device *dev, struct mesh_table *tbl); +/* Mesh paths */ +int mesh_path_error_tx(u8 *dest, __le32 dest_dsn, u8 *ra, + struct net_device *dev); +void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta); +void mesh_path_flush_pending(struct mesh_path *mpath); +void mesh_path_tx_pending(struct mesh_path *mpath); +int mesh_pathtbl_init(void); +void mesh_pathtbl_unregister(void); +int mesh_path_del(u8 *addr, struct net_device *dev); +void mesh_path_timer(unsigned long data); +void mesh_path_flush_by_nexthop(struct sta_info *sta); +void mesh_path_discard_frame(struct sk_buff *skb, struct net_device *dev); + +#ifdef CONFIG_MAC80211_MESH +extern int mesh_allocated; + +static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata) +{ + return sdata->u.sta.mshcfg.dot11MeshMaxPeerLinks - + atomic_read(&sdata->u.sta.mshstats.estab_plinks); +} + +static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata) +{ + return (min_t(long, mesh_plink_free_count(sdata), + MESH_MAX_PLINKS - sdata->local->num_sta)) > 0; +} + +static inline void mesh_path_activate(struct mesh_path *mpath) +{ + mpath->flags |= MESH_PATH_ACTIVE | MESH_PATH_RESOLVED; +} + +#define for_each_mesh_entry(x, p, node, i) \ + for (i = 0; i <= x->hash_mask; i++) \ + hlist_for_each_entry_rcu(node, p, &x->hash_buckets[i], list) + +#else +#define mesh_allocated 0 +#endif + +#define MESH_PREQ(skb) (skb->cb + 30) + +#endif /* IEEE80211S_H */ diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c new file mode 100644 index 0000000..02de8f1 --- /dev/null +++ b/net/mac80211/mesh_hwmp.c @@ -0,0 +1,855 @@ +/* + * Copyright (c) 2008 open80211s Ltd. + * Author: Luis Carlos Cobo <luisca@cozybit.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <asm/unaligned.h> +#include "mesh.h" + +#define TEST_FRAME_LEN 8192 +#define MAX_METRIC 0xffffffff +#define ARITH_SHIFT 8 + +/* Number of frames buffered per destination for unresolved destinations */ +#define MESH_FRAME_QUEUE_LEN 10 +#define MAX_PREQ_QUEUE_LEN 64 + +/* Destination only */ +#define MP_F_DO 0x1 +/* Reply and forward */ +#define MP_F_RF 0x2 + +static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae) +{ + if (ae) + offset += 6; + return le32_to_cpu(get_unaligned((__le32 *) (preq_elem + offset))); +} + +/* HWMP IE processing macros */ +#define AE_F (1<<6) +#define AE_F_SET(x) (*x & AE_F) +#define PREQ_IE_FLAGS(x) (*(x)) +#define PREQ_IE_HOPCOUNT(x) (*(x + 1)) +#define PREQ_IE_TTL(x) (*(x + 2)) +#define PREQ_IE_PREQ_ID(x) u32_field_get(x, 3, 0) +#define PREQ_IE_ORIG_ADDR(x) (x + 7) +#define PREQ_IE_ORIG_DSN(x) u32_field_get(x, 13, 0); +#define PREQ_IE_LIFETIME(x) u32_field_get(x, 17, AE_F_SET(x)); +#define PREQ_IE_METRIC(x) u32_field_get(x, 21, AE_F_SET(x)); +#define PREQ_IE_DST_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26)) +#define PREQ_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27) +#define PREQ_IE_DST_DSN(x) u32_field_get(x, 33, AE_F_SET(x)); + + +#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x) +#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x) +#define PREP_IE_TTL(x) PREQ_IE_TTL(x) +#define PREP_IE_ORIG_ADDR(x) (x + 3) +#define PREP_IE_ORIG_DSN(x) u32_field_get(x, 9, 0); +#define PREP_IE_LIFETIME(x) u32_field_get(x, 13, AE_F_SET(x)); +#define PREP_IE_METRIC(x) u32_field_get(x, 17, AE_F_SET(x)); +#define PREP_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21) +#define PREP_IE_DST_DSN(x) u32_field_get(x, 27, AE_F_SET(x)); + +#define PERR_IE_DST_ADDR(x) (x + 2) +#define PERR_IE_DST_DSN(x) u32_field_get(x, 8, 0); + +#define TU_TO_EXP_TIME(x) (jiffies + msecs_to_jiffies(x * 1024 / 1000)) +#define MSEC_TO_TU(x) (x*1000/1024) +#define DSN_GT(x, y) ((long) (y) - (long) (x) < 0) +#define DSN_LT(x, y) ((long) (x) - (long) (y) < 0) + +#define net_traversal_jiffies(s) \ + msecs_to_jiffies(s->u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime) +#define default_lifetime(s) \ + MSEC_TO_TU(s->u.sta.mshcfg.dot11MeshHWMPactivePathTimeout) +#define min_preq_int_jiff(s) \ + (msecs_to_jiffies(s->u.sta.mshcfg.dot11MeshHWMPpreqMinInterval)) +#define max_preq_retries(s) (s->u.sta.mshcfg.dot11MeshHWMPmaxPREQretries) +#define disc_timeout_jiff(s) \ + msecs_to_jiffies(sdata->u.sta.mshcfg.min_discovery_timeout) + +enum mpath_frame_type { + MPATH_PREQ = 0, + MPATH_PREP, + MPATH_PERR +}; + +static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags, + u8 *orig_addr, __le32 orig_dsn, u8 dst_flags, u8 *dst, + __le32 dst_dsn, u8 *da, u8 hop_count, u8 ttl, __le32 lifetime, + __le32 metric, __le32 preq_id, struct net_device *dev) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); + struct ieee80211_mgmt *mgmt; + u8 *pos; + int ie_len; + + if (!skb) + return -1; + skb_reserve(skb, local->hw.extra_tx_headroom); + /* 25 is the size of the common mgmt part (24) plus the size of the + * common action part (1) + */ + mgmt = (struct ieee80211_mgmt *) + skb_put(skb, 25 + sizeof(mgmt->u.action.u.mesh_action)); + memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.mesh_action)); + mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, + IEEE80211_STYPE_ACTION); + + memcpy(mgmt->da, da, ETH_ALEN); + memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); + /* BSSID is left zeroed, wildcard value */ + mgmt->u.action.category = MESH_PATH_SEL_CATEGORY; + mgmt->u.action.u.mesh_action.action_code = action; + + switch (action) { + case MPATH_PREQ: + ie_len = 37; + pos = skb_put(skb, 2 + ie_len); + *pos++ = WLAN_EID_PREQ; + break; + case MPATH_PREP: + ie_len = 31; + pos = skb_put(skb, 2 + ie_len); + *pos++ = WLAN_EID_PREP; + break; + default: + kfree(skb); + return -ENOTSUPP; + break; + } + *pos++ = ie_len; + *pos++ = flags; + *pos++ = hop_count; + *pos++ = ttl; + if (action == MPATH_PREQ) { + memcpy(pos, &preq_id, 4); + pos += 4; + } + memcpy(pos, orig_addr, ETH_ALEN); + pos += ETH_ALEN; + memcpy(pos, &orig_dsn, 4); + pos += 4; + memcpy(pos, &lifetime, 4); + pos += 4; + memcpy(pos, &metric, 4); + pos += 4; + if (action == MPATH_PREQ) { + /* destination count */ + *pos++ = 1; + *pos++ = dst_flags; + } + memcpy(pos, dst, ETH_ALEN); + pos += ETH_ALEN; + memcpy(pos, &dst_dsn, 4); + + ieee80211_sta_tx(dev, skb, 0); + return 0; +} + +/** + * mesh_send_path error - Sends a PERR mesh management frame + * + * @dst: broken destination + * @dst_dsn: dsn of the broken destination + * @ra: node this frame is addressed to + */ +int mesh_path_error_tx(u8 *dst, __le32 dst_dsn, u8 *ra, + struct net_device *dev) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); + struct ieee80211_mgmt *mgmt; + u8 *pos; + int ie_len; + + if (!skb) + return -1; + skb_reserve(skb, local->hw.extra_tx_headroom); + /* 25 is the size of the common mgmt part (24) plus the size of the + * common action part (1) + */ + mgmt = (struct ieee80211_mgmt *) + skb_put(skb, 25 + sizeof(mgmt->u.action.u.mesh_action)); + memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.mesh_action)); + mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, + IEEE80211_STYPE_ACTION); + + memcpy(mgmt->da, ra, ETH_ALEN); + memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); + /* BSSID is left zeroed, wildcard value */ + mgmt->u.action.category = MESH_PATH_SEL_CATEGORY; + mgmt->u.action.u.mesh_action.action_code = MPATH_PERR; + ie_len = 12; + pos = skb_put(skb, 2 + ie_len); + *pos++ = WLAN_EID_PERR; + *pos++ = ie_len; + /* mode flags, reserved */ + *pos++ = 0; + /* number of destinations */ + *pos++ = 1; + memcpy(pos, dst, ETH_ALEN); + pos += ETH_ALEN; + memcpy(pos, &dst_dsn, 4); + + ieee80211_sta_tx(dev, skb, 0); + return 0; +} + +static u32 airtime_link_metric_get(struct ieee80211_local *local, + struct sta_info *sta) +{ + struct ieee80211_supported_band *sband; + /* This should be adjusted for each device */ + int device_constant = 1 << ARITH_SHIFT; + int test_frame_len = TEST_FRAME_LEN << ARITH_SHIFT; + int s_unit = 1 << ARITH_SHIFT; + int rate, err; + u32 tx_time, estimated_retx; + u64 result; + + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + + if (sta->fail_avg >= 100) + return MAX_METRIC; + err = (sta->fail_avg << ARITH_SHIFT) / 100; + + /* bitrate is in units of 100 Kbps, while we need rate in units of + * 1Mbps. This will be corrected on tx_time computation. + */ + rate = sband->bitrates[sta->txrate_idx].bitrate; + tx_time = (device_constant + 10 * test_frame_len / rate); + estimated_retx = ((1 << (2 * ARITH_SHIFT)) / (s_unit - err)); + result = (tx_time * estimated_retx) >> (2 * ARITH_SHIFT) ; + return (u32)result; +} + +/** + * hwmp_route_info_get - Update routing info to originator and transmitter + * + * @dev: local mesh interface + * @mgmt: mesh management frame + * @hwmp_ie: hwmp information element (PREP or PREQ) + * + * This function updates the path routing information to the originator and the + * transmitter of a HWMP PREQ or PREP fram. + * + * Returns: metric to frame originator or 0 if the frame should not be further + * processed + * + * Notes: this function is the only place (besides user-provided info) where + * path routing information is updated. + */ +static u32 hwmp_route_info_get(struct net_device *dev, + struct ieee80211_mgmt *mgmt, + u8 *hwmp_ie) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct mesh_path *mpath; + struct sta_info *sta; + bool fresh_info; + u8 *orig_addr, *ta; + u32 orig_dsn, orig_metric; + unsigned long orig_lifetime, exp_time; + u32 last_hop_metric, new_metric; + bool process = true; + u8 action = mgmt->u.action.u.mesh_action.action_code; + + rcu_read_lock(); + sta = sta_info_get(local, mgmt->sa); + if (!sta) { + rcu_read_unlock(); + return 0; + } + + last_hop_metric = airtime_link_metric_get(local, sta); + /* Update and check originator routing info */ + fresh_info = true; + + switch (action) { + case MPATH_PREQ: + orig_addr = PREQ_IE_ORIG_ADDR(hwmp_ie); + orig_dsn = PREQ_IE_ORIG_DSN(hwmp_ie); + orig_lifetime = PREQ_IE_LIFETIME(hwmp_ie); + orig_metric = PREQ_IE_METRIC(hwmp_ie); + break; + case MPATH_PREP: + /* Originator here refers to the MP that was the destination in + * the Path Request. The draft refers to that MP as the + * destination address, even though usually it is the origin of + * the PREP frame. We divert from the nomenclature in the draft + * so that we can easily use a single function to gather path + * information from both PREQ and PREP frames. + */ + orig_addr = PREP_IE_ORIG_ADDR(hwmp_ie); + orig_dsn = PREP_IE_ORIG_DSN(hwmp_ie); + orig_lifetime = PREP_IE_LIFETIME(hwmp_ie); + orig_metric = PREP_IE_METRIC(hwmp_ie); + break; + default: + rcu_read_unlock(); + return 0; + } + new_metric = orig_metric + last_hop_metric; + if (new_metric < orig_metric) + new_metric = MAX_METRIC; + exp_time = TU_TO_EXP_TIME(orig_lifetime); + + if (memcmp(orig_addr, dev->dev_addr, ETH_ALEN) == 0) { + /* This MP is the originator, we are not interested in this + * frame, except for updating transmitter's path info. + */ + process = false; + fresh_info = false; + } else { + mpath = mesh_path_lookup(orig_addr, dev); + if (mpath) { + spin_lock_bh(&mpath->state_lock); + if (mpath->flags & MESH_PATH_FIXED) + fresh_info = false; + else if ((mpath->flags & MESH_PATH_ACTIVE) && + (mpath->flags & MESH_PATH_DSN_VALID)) { + if (DSN_GT(mpath->dsn, orig_dsn) || + (mpath->dsn == orig_dsn && + action == MPATH_PREQ && + new_metric > mpath->metric)) { + process = false; + fresh_info = false; + } + } + } else { + mesh_path_add(orig_addr, dev); + mpath = mesh_path_lookup(orig_addr, dev); + if (!mpath) { + rcu_read_unlock(); + return 0; + } + spin_lock_bh(&mpath->state_lock); + } + + if (fresh_info) { + mesh_path_assign_nexthop(mpath, sta); + mpath->flags |= MESH_PATH_DSN_VALID; + mpath->metric = new_metric; + mpath->dsn = orig_dsn; + mpath->exp_time = time_after(mpath->exp_time, exp_time) + ? mpath->exp_time : exp_time; + mesh_path_activate(mpath); + spin_unlock_bh(&mpath->state_lock); + mesh_path_tx_pending(mpath); + /* draft says preq_id should be saved to, but there does + * not seem to be any use for it, skipping by now + */ + } else + spin_unlock_bh(&mpath->state_lock); + } + + /* Update and check transmitter routing info */ + ta = mgmt->sa; + if (memcmp(orig_addr, ta, ETH_ALEN) == 0) + fresh_info = false; + else { + fresh_info = true; + + mpath = mesh_path_lookup(ta, dev); + if (mpath) { + spin_lock_bh(&mpath->state_lock); + if ((mpath->flags & MESH_PATH_FIXED) || + ((mpath->flags & MESH_PATH_ACTIVE) && + (last_hop_metric > mpath->metric))) + fresh_info = false; + } else { + mesh_path_add(ta, dev); + mpath = mesh_path_lookup(ta, dev); + if (!mpath) { + rcu_read_unlock(); + return 0; + } + spin_lock_bh(&mpath->state_lock); + } + + if (fresh_info) { + mesh_path_assign_nexthop(mpath, sta); + mpath->flags &= ~MESH_PATH_DSN_VALID; + mpath->metric = last_hop_metric; + mpath->exp_time = time_after(mpath->exp_time, exp_time) + ? mpath->exp_time : exp_time; + mesh_path_activate(mpath); + spin_unlock_bh(&mpath->state_lock); + mesh_path_tx_pending(mpath); + } else + spin_unlock_bh(&mpath->state_lock); + } + + rcu_read_unlock(); + + return process ? new_metric : 0; +} + +static void hwmp_preq_frame_process(struct net_device *dev, + struct ieee80211_mgmt *mgmt, + u8 *preq_elem, u32 metric) { + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct mesh_path *mpath; + u8 *dst_addr, *orig_addr; + u8 dst_flags, ttl; + u32 orig_dsn, dst_dsn, lifetime; + bool reply = false; + bool forward = true; + + /* Update destination DSN, if present */ + dst_addr = PREQ_IE_DST_ADDR(preq_elem); + orig_addr = PREQ_IE_ORIG_ADDR(preq_elem); + dst_dsn = PREQ_IE_DST_DSN(preq_elem); + orig_dsn = PREQ_IE_ORIG_DSN(preq_elem); + dst_flags = PREQ_IE_DST_F(preq_elem); + + if (memcmp(dst_addr, dev->dev_addr, ETH_ALEN) == 0) { + forward = false; + reply = true; + metric = 0; + if (time_after(jiffies, ifsta->last_dsn_update + + net_traversal_jiffies(sdata)) || + time_before(jiffies, ifsta->last_dsn_update)) { + dst_dsn = ++ifsta->dsn; + ifsta->last_dsn_update = jiffies; + } + } else { + rcu_read_lock(); + mpath = mesh_path_lookup(dst_addr, dev); + if (mpath) { + if ((!(mpath->flags & MESH_PATH_DSN_VALID)) || + DSN_LT(mpath->dsn, dst_dsn)) { + mpath->dsn = dst_dsn; + mpath->flags &= MESH_PATH_DSN_VALID; + } else if ((!(dst_flags & MP_F_DO)) && + (mpath->flags & MESH_PATH_ACTIVE)) { + reply = true; + metric = mpath->metric; + dst_dsn = mpath->dsn; + if (dst_flags & MP_F_RF) + dst_flags |= MP_F_DO; + else + forward = false; + } + } + rcu_read_unlock(); + } + + if (reply) { + lifetime = PREQ_IE_LIFETIME(preq_elem); + ttl = ifsta->mshcfg.dot11MeshTTL; + if (ttl != 0) + mesh_path_sel_frame_tx(MPATH_PREP, 0, dst_addr, + cpu_to_le32(dst_dsn), 0, orig_addr, + cpu_to_le32(orig_dsn), mgmt->sa, 0, ttl, + cpu_to_le32(lifetime), cpu_to_le32(metric), + 0, dev); + else + ifsta->mshstats.dropped_frames_ttl++; + } + + if (forward) { + u32 preq_id; + u8 hopcount, flags; + + ttl = PREQ_IE_TTL(preq_elem); + lifetime = PREQ_IE_LIFETIME(preq_elem); + if (ttl <= 1) { + ifsta->mshstats.dropped_frames_ttl++; + return; + } + --ttl; + flags = PREQ_IE_FLAGS(preq_elem); + preq_id = PREQ_IE_PREQ_ID(preq_elem); + hopcount = PREQ_IE_HOPCOUNT(preq_elem) + 1; + mesh_path_sel_frame_tx(MPATH_PREQ, flags, orig_addr, + cpu_to_le32(orig_dsn), dst_flags, dst_addr, + cpu_to_le32(dst_dsn), dev->broadcast, + hopcount, ttl, cpu_to_le32(lifetime), + cpu_to_le32(metric), cpu_to_le32(preq_id), + dev); + ifsta->mshstats.fwded_frames++; + } +} + + +static void hwmp_prep_frame_process(struct net_device *dev, + struct ieee80211_mgmt *mgmt, + u8 *prep_elem, u32 metric) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_path *mpath; + u8 *dst_addr, *orig_addr; + u8 ttl, hopcount, flags; + u8 next_hop[ETH_ALEN]; + u32 dst_dsn, orig_dsn, lifetime; + + /* Note that we divert from the draft nomenclature and denominate + * destination to what the draft refers to as origininator. So in this + * function destnation refers to the final destination of the PREP, + * which corresponds with the originator of the PREQ which this PREP + * replies + */ + dst_addr = PREP_IE_DST_ADDR(prep_elem); + if (memcmp(dst_addr, dev->dev_addr, ETH_ALEN) == 0) + /* destination, no forwarding required */ + return; + + ttl = PREP_IE_TTL(prep_elem); + if (ttl <= 1) { + sdata->u.sta.mshstats.dropped_frames_ttl++; + return; + } + + rcu_read_lock(); + mpath = mesh_path_lookup(dst_addr, dev); + if (mpath) + spin_lock_bh(&mpath->state_lock); + else + goto fail; + if (!(mpath->flags & MESH_PATH_ACTIVE)) { + spin_unlock_bh(&mpath->state_lock); + goto fail; + } + memcpy(next_hop, mpath->next_hop->addr, ETH_ALEN); + spin_unlock_bh(&mpath->state_lock); + --ttl; + flags = PREP_IE_FLAGS(prep_elem); + lifetime = PREP_IE_LIFETIME(prep_elem); + hopcount = PREP_IE_HOPCOUNT(prep_elem) + 1; + orig_addr = PREP_IE_ORIG_ADDR(prep_elem); + dst_dsn = PREP_IE_DST_DSN(prep_elem); + orig_dsn = PREP_IE_ORIG_DSN(prep_elem); + + mesh_path_sel_frame_tx(MPATH_PREP, flags, orig_addr, + cpu_to_le32(orig_dsn), 0, dst_addr, + cpu_to_le32(dst_dsn), mpath->next_hop->addr, hopcount, ttl, + cpu_to_le32(lifetime), cpu_to_le32(metric), + 0, dev); + rcu_read_unlock(); + sdata->u.sta.mshstats.fwded_frames++; + return; + +fail: + rcu_read_unlock(); + sdata->u.sta.mshstats.dropped_frames_no_route++; + return; +} + +static void hwmp_perr_frame_process(struct net_device *dev, + struct ieee80211_mgmt *mgmt, u8 *perr_elem) +{ + struct mesh_path *mpath; + u8 *ta, *dst_addr; + u32 dst_dsn; + + ta = mgmt->sa; + dst_addr = PERR_IE_DST_ADDR(perr_elem); + dst_dsn = PERR_IE_DST_DSN(perr_elem); + rcu_read_lock(); + mpath = mesh_path_lookup(dst_addr, dev); + if (mpath) { + spin_lock_bh(&mpath->state_lock); + if (mpath->flags & MESH_PATH_ACTIVE && + memcmp(ta, mpath->next_hop->addr, ETH_ALEN) == 0 && + (!(mpath->flags & MESH_PATH_DSN_VALID) || + DSN_GT(dst_dsn, mpath->dsn))) { + mpath->flags &= ~MESH_PATH_ACTIVE; + mpath->dsn = dst_dsn; + spin_unlock_bh(&mpath->state_lock); + mesh_path_error_tx(dst_addr, cpu_to_le32(dst_dsn), + dev->broadcast, dev); + } else + spin_unlock_bh(&mpath->state_lock); + } + rcu_read_unlock(); +} + + + +void mesh_rx_path_sel_frame(struct net_device *dev, + struct ieee80211_mgmt *mgmt, + size_t len) +{ + struct ieee802_11_elems elems; + size_t baselen; + u32 last_hop_metric; + + baselen = (u8 *) mgmt->u.action.u.mesh_action.variable - (u8 *) mgmt; + ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable, + len - baselen, &elems); + + switch (mgmt->u.action.u.mesh_action.action_code) { + case MPATH_PREQ: + if (!elems.preq || elems.preq_len != 37) + /* Right now we support just 1 destination and no AE */ + return; + last_hop_metric = hwmp_route_info_get(dev, mgmt, elems.preq); + if (!last_hop_metric) + return; + hwmp_preq_frame_process(dev, mgmt, elems.preq, last_hop_metric); + break; + case MPATH_PREP: + if (!elems.prep || elems.prep_len != 31) + /* Right now we support no AE */ + return; + last_hop_metric = hwmp_route_info_get(dev, mgmt, elems.prep); + if (!last_hop_metric) + return; + hwmp_prep_frame_process(dev, mgmt, elems.prep, last_hop_metric); + break; + case MPATH_PERR: + if (!elems.perr || elems.perr_len != 12) + /* Right now we support only one destination per PERR */ + return; + hwmp_perr_frame_process(dev, mgmt, elems.perr); + default: + return; + } + +} + +/** + * mesh_queue_preq - queue a PREQ to a given destination + * + * @mpath: mesh path to discover + * @flags: special attributes of the PREQ to be sent + * + * Locking: the function must be called from within a rcu read lock block. + * + */ +static void mesh_queue_preq(struct mesh_path *mpath, u8 flags) +{ + struct ieee80211_sub_if_data *sdata = + IEEE80211_DEV_TO_SUB_IF(mpath->dev); + struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct mesh_preq_queue *preq_node; + + preq_node = kmalloc(sizeof(struct mesh_preq_queue), GFP_KERNEL); + if (!preq_node) { + printk(KERN_DEBUG "Mesh HWMP: could not allocate PREQ node\n"); + return; + } + + spin_lock(&ifsta->mesh_preq_queue_lock); + if (ifsta->preq_queue_len == MAX_PREQ_QUEUE_LEN) { + spin_unlock(&ifsta->mesh_preq_queue_lock); + kfree(preq_node); + if (printk_ratelimit()) + printk(KERN_DEBUG "Mesh HWMP: PREQ node queue full\n"); + return; + } + + memcpy(preq_node->dst, mpath->dst, ETH_ALEN); + preq_node->flags = flags; + + list_add_tail(&preq_node->list, &ifsta->preq_queue.list); + ++ifsta->preq_queue_len; + spin_unlock(&ifsta->mesh_preq_queue_lock); + + if (time_after(jiffies, ifsta->last_preq + min_preq_int_jiff(sdata))) + queue_work(sdata->local->hw.workqueue, &ifsta->work); + + else if (time_before(jiffies, ifsta->last_preq)) { + /* avoid long wait if did not send preqs for a long time + * and jiffies wrapped around + */ + ifsta->last_preq = jiffies - min_preq_int_jiff(sdata) - 1; + queue_work(sdata->local->hw.workqueue, &ifsta->work); + } else + mod_timer(&ifsta->mesh_path_timer, ifsta->last_preq + + min_preq_int_jiff(sdata)); +} + +/** + * mesh_path_start_discovery - launch a path discovery from the PREQ queue + * + * @dev: local mesh interface + */ +void mesh_path_start_discovery(struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = + IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct mesh_preq_queue *preq_node; + struct mesh_path *mpath; + u8 ttl, dst_flags; + u32 lifetime; + + spin_lock(&ifsta->mesh_preq_queue_lock); + if (!ifsta->preq_queue_len || + time_before(jiffies, ifsta->last_preq + + min_preq_int_jiff(sdata))) { + spin_unlock(&ifsta->mesh_preq_queue_lock); + return; + } + + preq_node = list_first_entry(&ifsta->preq_queue.list, + struct mesh_preq_queue, list); + list_del(&preq_node->list); + --ifsta->preq_queue_len; + spin_unlock(&ifsta->mesh_preq_queue_lock); + + rcu_read_lock(); + mpath = mesh_path_lookup(preq_node->dst, dev); + if (!mpath) + goto enddiscovery; + + spin_lock_bh(&mpath->state_lock); + if (preq_node->flags & PREQ_Q_F_START) { + if (mpath->flags & MESH_PATH_RESOLVING) { + spin_unlock_bh(&mpath->state_lock); + goto enddiscovery; + } else { + mpath->flags &= ~MESH_PATH_RESOLVED; + mpath->flags |= MESH_PATH_RESOLVING; + mpath->discovery_retries = 0; + mpath->discovery_timeout = disc_timeout_jiff(sdata); + } + } else if (!(mpath->flags & MESH_PATH_RESOLVING) || + mpath->flags & MESH_PATH_RESOLVED) { + mpath->flags &= ~MESH_PATH_RESOLVING; + spin_unlock_bh(&mpath->state_lock); + goto enddiscovery; + } + + ifsta->last_preq = jiffies; + + if (time_after(jiffies, ifsta->last_dsn_update + + net_traversal_jiffies(sdata)) || + time_before(jiffies, ifsta->last_dsn_update)) { + ++ifsta->dsn; + sdata->u.sta.last_dsn_update = jiffies; + } + lifetime = default_lifetime(sdata); + ttl = sdata->u.sta.mshcfg.dot11MeshTTL; + if (ttl == 0) { + sdata->u.sta.mshstats.dropped_frames_ttl++; + spin_unlock_bh(&mpath->state_lock); + goto enddiscovery; + } + + if (preq_node->flags & PREQ_Q_F_REFRESH) + dst_flags = MP_F_DO; + else + dst_flags = MP_F_RF; + + spin_unlock_bh(&mpath->state_lock); + mesh_path_sel_frame_tx(MPATH_PREQ, 0, dev->dev_addr, + cpu_to_le32(ifsta->dsn), dst_flags, mpath->dst, + cpu_to_le32(mpath->dsn), dev->broadcast, 0, + ttl, cpu_to_le32(lifetime), 0, + cpu_to_le32(ifsta->preq_id++), dev); + mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout); + +enddiscovery: + rcu_read_unlock(); + kfree(preq_node); +} + +/** + * ieee80211s_lookup_nexthop - put the appropriate next hop on a mesh frame + * + * @next_hop: output argument for next hop address + * @skb: frame to be sent + * @dev: network device the frame will be sent through + * + * Returns: 0 if the next hop was found. Nonzero otherwise. If no next hop is + * found, the function will start a path discovery and queue the frame so it is + * sent when the path is resolved. This means the caller must not free the skb + * in this case. + */ +int mesh_nexthop_lookup(u8 *next_hop, struct sk_buff *skb, + struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct sk_buff *skb_to_free = NULL; + struct mesh_path *mpath; + int err = 0; + + rcu_read_lock(); + mpath = mesh_path_lookup(skb->data, dev); + + if (!mpath) { + mesh_path_add(skb->data, dev); + mpath = mesh_path_lookup(skb->data, dev); + if (!mpath) { + dev_kfree_skb(skb); + sdata->u.sta.mshstats.dropped_frames_no_route++; + err = -ENOSPC; + goto endlookup; + } + } + + if (mpath->flags & MESH_PATH_ACTIVE) { + if (time_after(jiffies, mpath->exp_time - + msecs_to_jiffies(sdata->u.sta.mshcfg.path_refresh_time)) + && skb->pkt_type != PACKET_OTHERHOST + && !(mpath->flags & MESH_PATH_RESOLVING) + && !(mpath->flags & MESH_PATH_FIXED)) { + mesh_queue_preq(mpath, + PREQ_Q_F_START | PREQ_Q_F_REFRESH); + } + memcpy(next_hop, mpath->next_hop->addr, + ETH_ALEN); + } else { + if (!(mpath->flags & MESH_PATH_RESOLVING)) { + /* Start discovery only if it is not running yet */ + mesh_queue_preq(mpath, PREQ_Q_F_START); + } + + if (skb_queue_len(&mpath->frame_queue) >= + MESH_FRAME_QUEUE_LEN) { + skb_to_free = mpath->frame_queue.next; + skb_unlink(skb_to_free, &mpath->frame_queue); + } + + skb_queue_tail(&mpath->frame_queue, skb); + if (skb_to_free) + mesh_path_discard_frame(skb_to_free, dev); + err = -ENOENT; + } + +endlookup: + rcu_read_unlock(); + return err; +} + +void mesh_path_timer(unsigned long data) +{ + struct ieee80211_sub_if_data *sdata; + struct mesh_path *mpath; + + rcu_read_lock(); + mpath = (struct mesh_path *) data; + mpath = rcu_dereference(mpath); + if (!mpath) + goto endmpathtimer; + spin_lock_bh(&mpath->state_lock); + sdata = IEEE80211_DEV_TO_SUB_IF(mpath->dev); + if (mpath->flags & MESH_PATH_RESOLVED || + (!(mpath->flags & MESH_PATH_RESOLVING))) + mpath->flags &= ~(MESH_PATH_RESOLVING | MESH_PATH_RESOLVED); + else if (mpath->discovery_retries < max_preq_retries(sdata)) { + ++mpath->discovery_retries; + mpath->discovery_timeout *= 2; + mesh_queue_preq(mpath, 0); + } else { + mpath->flags = 0; + mpath->exp_time = jiffies; + mesh_path_flush_pending(mpath); + } + + spin_unlock_bh(&mpath->state_lock); +endmpathtimer: + rcu_read_unlock(); +} diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c new file mode 100644 index 0000000..5845dc2 --- /dev/null +++ b/net/mac80211/mesh_pathtbl.c @@ -0,0 +1,516 @@ +/* + * Copyright (c) 2008 open80211s Ltd. + * Author: Luis Carlos Cobo <luisca@cozybit.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/etherdevice.h> +#include <linux/list.h> +#include <linux/netdevice.h> +#include <linux/random.h> +#include <linux/spinlock.h> +#include <linux/string.h> +#include <net/mac80211.h> +#include "ieee80211_i.h" +#include "mesh.h" + +/* There will be initially 2^INIT_PATHS_SIZE_ORDER buckets */ +#define INIT_PATHS_SIZE_ORDER 2 + +/* Keep the mean chain length below this constant */ +#define MEAN_CHAIN_LEN 2 + +#define MPATH_EXPIRED(mpath) ((mpath->flags & MESH_PATH_ACTIVE) && \ + time_after(jiffies, mpath->exp_time) && \ + !(mpath->flags & MESH_PATH_FIXED)) + +struct mpath_node { + struct hlist_node list; + struct rcu_head rcu; + /* This indirection allows two different tables to point to the same + * mesh_path structure, useful when resizing + */ + struct mesh_path *mpath; +}; + +static struct mesh_table *mesh_paths; + +/* This lock will have the grow table function as writer and add / delete nodes + * as readers. When reading the table (i.e. doing lookups) we are well protected + * by RCU + */ +static DEFINE_RWLOCK(pathtbl_resize_lock); + +/** + * + * mesh_path_assign_nexthop - update mesh path next hop + * + * @mpath: mesh path to update + * @sta: next hop to assign + * + * Locking: mpath->state_lock must be held when calling this function + */ +void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta) +{ + rcu_assign_pointer(mpath->next_hop, sta); +} + + +/** + * mesh_path_lookup - look up a path in the mesh path table + * @dst: hardware address (ETH_ALEN length) of destination + * @dev: local interface + * + * Returns: pointer to the mesh path structure, or NULL if not found + * + * Locking: must be called within a read rcu section. + */ +struct mesh_path *mesh_path_lookup(u8 *dst, struct net_device *dev) +{ + struct mesh_path *mpath; + struct hlist_node *n; + struct hlist_head *bucket; + struct mesh_table *tbl; + struct mpath_node *node; + + tbl = rcu_dereference(mesh_paths); + + bucket = &tbl->hash_buckets[mesh_table_hash(dst, dev, tbl)]; + hlist_for_each_entry_rcu(node, n, bucket, list) { + mpath = node->mpath; + if (mpath->dev == dev && + memcmp(dst, mpath->dst, ETH_ALEN) == 0) { + if (MPATH_EXPIRED(mpath)) { + spin_lock_bh(&mpath->state_lock); + if (MPATH_EXPIRED(mpath)) + mpath->flags &= ~MESH_PATH_ACTIVE; + spin_unlock_bh(&mpath->state_lock); + } + return mpath; + } + } + return NULL; +} + +/** + * mesh_path_lookup_by_idx - look up a path in the mesh path table by its index + * @idx: index + * @dev: local interface, or NULL for all entries + * + * Returns: pointer to the mesh path structure, or NULL if not found. + * + * Locking: must be called within a read rcu section. + */ +struct mesh_path *mesh_path_lookup_by_idx(int idx, struct net_device *dev) +{ + struct mpath_node *node; + struct hlist_node *p; + int i; + int j = 0; + + for_each_mesh_entry(mesh_paths, p, node, i) { + if (dev && node->mpath->dev != dev) + continue; + if (j++ == idx) { + if (MPATH_EXPIRED(node->mpath)) { + spin_lock_bh(&node->mpath->state_lock); + if (MPATH_EXPIRED(node->mpath)) + node->mpath->flags &= ~MESH_PATH_ACTIVE; + spin_unlock_bh(&node->mpath->state_lock); + } + return node->mpath; + } + } + + return NULL; +} + +/** + * mesh_path_add - allocate and add a new path to the mesh path table + * @addr: destination address of the path (ETH_ALEN length) + * @dev: local interface + * + * Returns: 0 on sucess + * + * State: the initial state of the new path is set to 0 + */ +int mesh_path_add(u8 *dst, struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_path *mpath, *new_mpath; + struct mpath_node *node, *new_node; + struct hlist_head *bucket; + struct hlist_node *n; + int grow = 0; + int err = 0; + u32 hash_idx; + + if (memcmp(dst, dev->dev_addr, ETH_ALEN) == 0) + /* never add ourselves as neighbours */ + return -ENOTSUPP; + + if (is_multicast_ether_addr(dst)) + return -ENOTSUPP; + + if (atomic_add_unless(&sdata->u.sta.mpaths, 1, MESH_MAX_MPATHS) == 0) + return -ENOSPC; + + read_lock(&pathtbl_resize_lock); + + new_mpath = kzalloc(sizeof(struct mesh_path), GFP_KERNEL); + if (!new_mpath) { + atomic_dec(&sdata->u.sta.mpaths); + err = -ENOMEM; + goto endadd2; + } + memcpy(new_mpath->dst, dst, ETH_ALEN); + new_mpath->dev = dev; + new_mpath->flags = 0; + skb_queue_head_init(&new_mpath->frame_queue); + new_node = kmalloc(sizeof(struct mpath_node), GFP_KERNEL); + new_node->mpath = new_mpath; + new_mpath->timer.data = (unsigned long) new_mpath; + new_mpath->timer.function = mesh_path_timer; + new_mpath->exp_time = jiffies; + spin_lock_init(&new_mpath->state_lock); + init_timer(&new_mpath->timer); + + hash_idx = mesh_table_hash(dst, dev, mesh_paths); + bucket = &mesh_paths->hash_buckets[hash_idx]; + + spin_lock(&mesh_paths->hashwlock[hash_idx]); + + hlist_for_each_entry(node, n, bucket, list) { + mpath = node->mpath; + if (mpath->dev == dev && memcmp(dst, mpath->dst, ETH_ALEN) + == 0) { + err = -EEXIST; + atomic_dec(&sdata->u.sta.mpaths); + kfree(new_node); + kfree(new_mpath); + goto endadd; + } + } + + hlist_add_head_rcu(&new_node->list, bucket); + if (atomic_inc_return(&mesh_paths->entries) >= + mesh_paths->mean_chain_len * (mesh_paths->hash_mask + 1)) + grow = 1; + +endadd: + spin_unlock(&mesh_paths->hashwlock[hash_idx]); +endadd2: + read_unlock(&pathtbl_resize_lock); + if (!err && grow) { + struct mesh_table *oldtbl, *newtbl; + + write_lock(&pathtbl_resize_lock); + oldtbl = mesh_paths; + newtbl = mesh_table_grow(mesh_paths); + if (!newtbl) { + write_unlock(&pathtbl_resize_lock); + return -ENOMEM; + } + rcu_assign_pointer(mesh_paths, newtbl); + synchronize_rcu(); + mesh_table_free(oldtbl, false); + write_unlock(&pathtbl_resize_lock); + } + return err; +} + + +/** + * mesh_plink_broken - deactivates paths and sends perr when a link breaks + * + * @sta: broken peer link + * + * This function must be called from the rate control algorithm if enough + * delivery errors suggest that a peer link is no longer usable. + */ +void mesh_plink_broken(struct sta_info *sta) +{ + struct mesh_path *mpath; + struct mpath_node *node; + struct hlist_node *p; + struct net_device *dev = sta->sdata->dev; + int i; + + rcu_read_lock(); + for_each_mesh_entry(mesh_paths, p, node, i) { + mpath = node->mpath; + spin_lock_bh(&mpath->state_lock); + if (mpath->next_hop == sta && + mpath->flags & MESH_PATH_ACTIVE && + !(mpath->flags & MESH_PATH_FIXED)) { + mpath->flags &= ~MESH_PATH_ACTIVE; + ++mpath->dsn; + spin_unlock_bh(&mpath->state_lock); + mesh_path_error_tx(mpath->dst, + cpu_to_le32(mpath->dsn), + dev->broadcast, dev); + } else + spin_unlock_bh(&mpath->state_lock); + } + rcu_read_unlock(); +} +EXPORT_SYMBOL(mesh_plink_broken); + +/** + * mesh_path_flush_by_nexthop - Deletes mesh paths if their next hop matches + * + * @sta - mesh peer to match + * + * RCU notes: this function is called when a mesh plink transitions from + * PLINK_ESTAB to any other state, since PLINK_ESTAB state is the only one that + * allows path creation. This will happen before the sta can be freed (because + * sta_info_destroy() calls this) so any reader in a rcu read block will be + * protected against the plink disappearing. + */ +void mesh_path_flush_by_nexthop(struct sta_info *sta) +{ + struct mesh_path *mpath; + struct mpath_node *node; + struct hlist_node *p; + int i; + + for_each_mesh_entry(mesh_paths, p, node, i) { + mpath = node->mpath; + if (mpath->next_hop == sta) + mesh_path_del(mpath->dst, mpath->dev); + } +} + +void mesh_path_flush(struct net_device *dev) +{ + struct mesh_path *mpath; + struct mpath_node *node; + struct hlist_node *p; + int i; + + for_each_mesh_entry(mesh_paths, p, node, i) { + mpath = node->mpath; + if (mpath->dev == dev) + mesh_path_del(mpath->dst, mpath->dev); + } +} + +static void mesh_path_node_reclaim(struct rcu_head *rp) +{ + struct mpath_node *node = container_of(rp, struct mpath_node, rcu); + struct ieee80211_sub_if_data *sdata = + IEEE80211_DEV_TO_SUB_IF(node->mpath->dev); + + del_timer_sync(&node->mpath->timer); + atomic_dec(&sdata->u.sta.mpaths); + kfree(node->mpath); + kfree(node); +} + +/** + * mesh_path_del - delete a mesh path from the table + * + * @addr: dst address (ETH_ALEN length) + * @dev: local interface + * + * Returns: 0 if succesful + */ +int mesh_path_del(u8 *addr, struct net_device *dev) +{ + struct mesh_path *mpath; + struct mpath_node *node; + struct hlist_head *bucket; + struct hlist_node *n; + int hash_idx; + int err = 0; + + read_lock(&pathtbl_resize_lock); + hash_idx = mesh_table_hash(addr, dev, mesh_paths); + bucket = &mesh_paths->hash_buckets[hash_idx]; + + spin_lock(&mesh_paths->hashwlock[hash_idx]); + hlist_for_each_entry(node, n, bucket, list) { + mpath = node->mpath; + if (mpath->dev == dev && + memcmp(addr, mpath->dst, ETH_ALEN) == 0) { + spin_lock_bh(&mpath->state_lock); + mpath->flags |= MESH_PATH_RESOLVING; + hlist_del_rcu(&node->list); + call_rcu(&node->rcu, mesh_path_node_reclaim); + atomic_dec(&mesh_paths->entries); + spin_unlock_bh(&mpath->state_lock); + goto enddel; + } + } + + err = -ENXIO; +enddel: + spin_unlock(&mesh_paths->hashwlock[hash_idx]); + read_unlock(&pathtbl_resize_lock); + return err; +} + +/** + * mesh_path_tx_pending - sends pending frames in a mesh path queue + * + * @mpath: mesh path to activate + * + * Locking: the state_lock of the mpath structure must NOT be held when calling + * this function. + */ +void mesh_path_tx_pending(struct mesh_path *mpath) +{ + struct sk_buff *skb; + + while ((skb = skb_dequeue(&mpath->frame_queue)) && + (mpath->flags & MESH_PATH_ACTIVE)) + dev_queue_xmit(skb); +} + +/** + * mesh_path_discard_frame - discard a frame whose path could not be resolved + * + * @skb: frame to discard + * @dev: network device the frame was to be sent through + * + * If the frame was beign forwarded from another MP, a PERR frame will be sent + * to the precursor. + * + * Locking: the function must me called within a rcu_read_lock region + */ +void mesh_path_discard_frame(struct sk_buff *skb, struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mesh_path *mpath; + u32 dsn = 0; + + if (skb->pkt_type == PACKET_OTHERHOST) { + struct ieee80211s_hdr *prev_meshhdr; + int mshhdrlen; + u8 *ra, *da; + + prev_meshhdr = ((struct ieee80211s_hdr *)skb->cb); + mshhdrlen = ieee80211_get_mesh_hdrlen(prev_meshhdr); + da = skb->data; + ra = MESH_PREQ(skb); + mpath = mesh_path_lookup(da, dev); + if (mpath) + dsn = ++mpath->dsn; + mesh_path_error_tx(skb->data, cpu_to_le32(dsn), ra, dev); + } + + kfree_skb(skb); + sdata->u.sta.mshstats.dropped_frames_no_route++; +} + +/** + * mesh_path_flush_pending - free the pending queue of a mesh path + * + * @mpath: mesh path whose queue has to be freed + * + * Locking: the function must me called withing a rcu_read_lock region + */ +void mesh_path_flush_pending(struct mesh_path *mpath) +{ + struct ieee80211_sub_if_data *sdata; + struct sk_buff *skb; + + sdata = IEEE80211_DEV_TO_SUB_IF(mpath->dev); + + while ((skb = skb_dequeue(&mpath->frame_queue)) && + (mpath->flags & MESH_PATH_ACTIVE)) + mesh_path_discard_frame(skb, mpath->dev); +} + +/** + * mesh_path_fix_nexthop - force a specific next hop for a mesh path + * + * @mpath: the mesh path to modify + * @next_hop: the next hop to force + * + * Locking: this function must be called holding mpath->state_lock + */ +void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop) +{ + spin_lock_bh(&mpath->state_lock); + mesh_path_assign_nexthop(mpath, next_hop); + mpath->dsn = 0xffff; + mpath->metric = 0; + mpath->hop_count = 0; + mpath->exp_time = 0; + mpath->flags |= MESH_PATH_FIXED; + mesh_path_activate(mpath); + spin_unlock_bh(&mpath->state_lock); + mesh_path_tx_pending(mpath); +} + +static void mesh_path_node_free(struct hlist_node *p, bool free_leafs) +{ + struct mesh_path *mpath; + struct mpath_node *node = hlist_entry(p, struct mpath_node, list); + mpath = node->mpath; + hlist_del_rcu(p); + synchronize_rcu(); + if (free_leafs) + kfree(mpath); + kfree(node); +} + +static void mesh_path_node_copy(struct hlist_node *p, struct mesh_table *newtbl) +{ + struct mesh_path *mpath; + struct mpath_node *node, *new_node; + u32 hash_idx; + + node = hlist_entry(p, struct mpath_node, list); + mpath = node->mpath; + new_node = kmalloc(sizeof(struct mpath_node), GFP_KERNEL); + new_node->mpath = mpath; + hash_idx = mesh_table_hash(mpath->dst, mpath->dev, newtbl); + hlist_add_head(&new_node->list, + &newtbl->hash_buckets[hash_idx]); +} + +int mesh_pathtbl_init(void) +{ + mesh_paths = mesh_table_alloc(INIT_PATHS_SIZE_ORDER); + mesh_paths->free_node = &mesh_path_node_free; + mesh_paths->copy_node = &mesh_path_node_copy; + mesh_paths->mean_chain_len = MEAN_CHAIN_LEN; + if (!mesh_paths) + return -ENOMEM; + return 0; +} + +void mesh_path_expire(struct net_device *dev) +{ + struct mesh_path *mpath; + struct mpath_node *node; + struct hlist_node *p; + int i; + + read_lock(&pathtbl_resize_lock); + for_each_mesh_entry(mesh_paths, p, node, i) { + if (node->mpath->dev != dev) + continue; + mpath = node->mpath; + spin_lock_bh(&mpath->state_lock); + if ((!(mpath->flags & MESH_PATH_RESOLVING)) && + (!(mpath->flags & MESH_PATH_FIXED)) && + time_after(jiffies, + mpath->exp_time + MESH_PATH_EXPIRE)) { + spin_unlock_bh(&mpath->state_lock); + mesh_path_del(mpath->dst, mpath->dev); + } else + spin_unlock_bh(&mpath->state_lock); + } + read_unlock(&pathtbl_resize_lock); +} + +void mesh_pathtbl_unregister(void) +{ + mesh_table_free(mesh_paths, true); +} diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c new file mode 100644 index 0000000..37f0c2b --- /dev/null +++ b/net/mac80211/mesh_plink.c @@ -0,0 +1,762 @@ +/* + * Copyright (c) 2008 open80211s Ltd. + * Author: Luis Carlos Cobo <luisca@cozybit.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/kernel.h> +#include <linux/random.h> +#include "ieee80211_i.h" +#include "rate.h" +#include "mesh.h" + +#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG +#define mpl_dbg(fmt, args...) printk(KERN_DEBUG fmt, ##args) +#else +#define mpl_dbg(fmt, args...) do { (void)(0); } while (0) +#endif + +#define PLINK_GET_FRAME_SUBTYPE(p) (p) +#define PLINK_GET_LLID(p) (p + 1) +#define PLINK_GET_PLID(p) (p + 3) + +#define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \ + jiffies + HZ * t / 1000)) + +/* Peer link cancel reasons, all subject to ANA approval */ +#define MESH_LINK_CANCELLED 2 +#define MESH_MAX_NEIGHBORS 3 +#define MESH_CAPABILITY_POLICY_VIOLATION 4 +#define MESH_CLOSE_RCVD 5 +#define MESH_MAX_RETRIES 6 +#define MESH_CONFIRM_TIMEOUT 7 +#define MESH_SECURITY_ROLE_NEGOTIATION_DIFFERS 8 +#define MESH_SECURITY_AUTHENTICATION_IMPOSSIBLE 9 +#define MESH_SECURITY_FAILED_VERIFICATION 10 + +#define dot11MeshMaxRetries(s) (s->u.sta.mshcfg.dot11MeshMaxRetries) +#define dot11MeshRetryTimeout(s) (s->u.sta.mshcfg.dot11MeshRetryTimeout) +#define dot11MeshConfirmTimeout(s) (s->u.sta.mshcfg.dot11MeshConfirmTimeout) +#define dot11MeshHoldingTimeout(s) (s->u.sta.mshcfg.dot11MeshHoldingTimeout) +#define dot11MeshMaxPeerLinks(s) (s->u.sta.mshcfg.dot11MeshMaxPeerLinks) + +enum plink_frame_type { + PLINK_OPEN = 0, + PLINK_CONFIRM, + PLINK_CLOSE +}; + +enum plink_event { + PLINK_UNDEFINED, + OPN_ACPT, + OPN_RJCT, + OPN_IGNR, + CNF_ACPT, + CNF_RJCT, + CNF_IGNR, + CLS_ACPT, + CLS_IGNR +}; + +static inline +void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata) +{ + atomic_inc(&sdata->u.sta.mshstats.estab_plinks); + mesh_accept_plinks_update(sdata); +} + +static inline +void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata) +{ + atomic_dec(&sdata->u.sta.mshstats.estab_plinks); + mesh_accept_plinks_update(sdata); +} + +/** + * mesh_plink_fsm_restart - restart a mesh peer link finite state machine + * + * @sta: mes peer link to restart + * + * Locking: this function must be called holding sta->plink_lock + */ +static inline void mesh_plink_fsm_restart(struct sta_info *sta) +{ + sta->plink_state = PLINK_LISTEN; + sta->llid = sta->plid = sta->reason = 0; + sta->plink_retries = 0; +} + +/* + * NOTE: This is just an alias for sta_info_alloc(), see notes + * on it in the lifecycle management section! + */ +static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata, + u8 *hw_addr, u64 rates) +{ + struct ieee80211_local *local = sdata->local; + struct sta_info *sta; + + if (local->num_sta >= MESH_MAX_PLINKS) + return NULL; + + sta = sta_info_alloc(sdata, hw_addr, GFP_ATOMIC); + if (!sta) + return NULL; + + sta->flags |= WLAN_STA_AUTHORIZED; + sta->supp_rates[local->hw.conf.channel->band] = rates; + + return sta; +} + +/** + * mesh_plink_deactivate - deactivate mesh peer link + * + * @sta: mesh peer link to deactivate + * + * All mesh paths with this peer as next hop will be flushed + * + * Locking: the caller must hold sta->plink_lock + */ +static void __mesh_plink_deactivate(struct sta_info *sta) +{ + struct ieee80211_sub_if_data *sdata = sta->sdata; + + if (sta->plink_state == PLINK_ESTAB) + mesh_plink_dec_estab_count(sdata); + sta->plink_state = PLINK_BLOCKED; + mesh_path_flush_by_nexthop(sta); +} + +/** + * __mesh_plink_deactivate - deactivate mesh peer link + * + * @sta: mesh peer link to deactivate + * + * All mesh paths with this peer as next hop will be flushed + */ +void mesh_plink_deactivate(struct sta_info *sta) +{ + spin_lock_bh(&sta->plink_lock); + __mesh_plink_deactivate(sta); + spin_unlock_bh(&sta->plink_lock); +} + +static int mesh_plink_frame_tx(struct net_device *dev, + enum plink_frame_type action, u8 *da, __le16 llid, __le16 plid, + __le16 reason) { + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); + struct ieee80211_mgmt *mgmt; + bool include_plid = false; + u8 *pos; + int ie_len; + + if (!skb) + return -1; + skb_reserve(skb, local->hw.extra_tx_headroom); + /* 25 is the size of the common mgmt part (24) plus the size of the + * common action part (1) + */ + mgmt = (struct ieee80211_mgmt *) + skb_put(skb, 25 + sizeof(mgmt->u.action.u.plink_action)); + memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.plink_action)); + mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, + IEEE80211_STYPE_ACTION); + memcpy(mgmt->da, da, ETH_ALEN); + memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); + /* BSSID is left zeroed, wildcard value */ + mgmt->u.action.category = PLINK_CATEGORY; + mgmt->u.action.u.plink_action.action_code = action; + + if (action == PLINK_CLOSE) + mgmt->u.action.u.plink_action.aux = reason; + else { + mgmt->u.action.u.plink_action.aux = cpu_to_le16(0x0); + if (action == PLINK_CONFIRM) { + pos = skb_put(skb, 4); + /* two-byte status code followed by two-byte AID */ + memset(pos, 0, 4); + } + mesh_mgmt_ies_add(skb, dev); + } + + /* Add Peer Link Management element */ + switch (action) { + case PLINK_OPEN: + ie_len = 3; + break; + case PLINK_CONFIRM: + ie_len = 5; + include_plid = true; + break; + case PLINK_CLOSE: + default: + if (!plid) + ie_len = 5; + else { + ie_len = 7; + include_plid = true; + } + break; + } + + pos = skb_put(skb, 2 + ie_len); + *pos++ = WLAN_EID_PEER_LINK; + *pos++ = ie_len; + *pos++ = action; + memcpy(pos, &llid, 2); + if (include_plid) { + pos += 2; + memcpy(pos, &plid, 2); + } + if (action == PLINK_CLOSE) { + pos += 2; + memcpy(pos, &reason, 2); + } + + ieee80211_sta_tx(dev, skb, 0); + return 0; +} + +void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct net_device *dev, + bool peer_accepting_plinks) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct sta_info *sta; + + rcu_read_lock(); + + sta = sta_info_get(local, hw_addr); + if (!sta) { + sta = mesh_plink_alloc(sdata, hw_addr, rates); + if (!sta) { + rcu_read_unlock(); + return; + } + if (sta_info_insert(sta)) { + rcu_read_unlock(); + return; + } + } + + sta->last_rx = jiffies; + sta->supp_rates[local->hw.conf.channel->band] = rates; + if (peer_accepting_plinks && sta->plink_state == PLINK_LISTEN && + sdata->u.sta.accepting_plinks && + sdata->u.sta.mshcfg.auto_open_plinks) + mesh_plink_open(sta); + + rcu_read_unlock(); +} + +static void mesh_plink_timer(unsigned long data) +{ + struct sta_info *sta; + __le16 llid, plid, reason; + struct net_device *dev = NULL; + struct ieee80211_sub_if_data *sdata; +#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG + DECLARE_MAC_BUF(mac); +#endif + + /* + * This STA is valid because sta_info_destroy() will + * del_timer_sync() this timer after having made sure + * it cannot be readded (by deleting the plink.) + */ + sta = (struct sta_info *) data; + + spin_lock_bh(&sta->plink_lock); + if (sta->ignore_plink_timer) { + sta->ignore_plink_timer = false; + spin_unlock_bh(&sta->plink_lock); + return; + } + mpl_dbg("Mesh plink timer for %s fired on state %d\n", + print_mac(mac, sta->addr), sta->plink_state); + reason = 0; + llid = sta->llid; + plid = sta->plid; + sdata = sta->sdata; + dev = sdata->dev; + + switch (sta->plink_state) { + case PLINK_OPN_RCVD: + case PLINK_OPN_SNT: + /* retry timer */ + if (sta->plink_retries < dot11MeshMaxRetries(sdata)) { + u32 rand; + mpl_dbg("Mesh plink for %s (retry, timeout): %d %d\n", + print_mac(mac, sta->addr), + sta->plink_retries, sta->plink_timeout); + get_random_bytes(&rand, sizeof(u32)); + sta->plink_timeout = sta->plink_timeout + + rand % sta->plink_timeout; + ++sta->plink_retries; + mod_plink_timer(sta, sta->plink_timeout); + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_OPEN, sta->addr, llid, + 0, 0); + break; + } + reason = cpu_to_le16(MESH_MAX_RETRIES); + /* fall through on else */ + case PLINK_CNF_RCVD: + /* confirm timer */ + if (!reason) + reason = cpu_to_le16(MESH_CONFIRM_TIMEOUT); + sta->plink_state = PLINK_HOLDING; + mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid, plid, + reason); + break; + case PLINK_HOLDING: + /* holding timer */ + del_timer(&sta->plink_timer); + mesh_plink_fsm_restart(sta); + spin_unlock_bh(&sta->plink_lock); + break; + default: + spin_unlock_bh(&sta->plink_lock); + break; + } +} + +static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) +{ + sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); + sta->plink_timer.data = (unsigned long) sta; + sta->plink_timer.function = mesh_plink_timer; + sta->plink_timeout = timeout; + add_timer(&sta->plink_timer); +} + +int mesh_plink_open(struct sta_info *sta) +{ + __le16 llid; + struct ieee80211_sub_if_data *sdata = sta->sdata; +#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG + DECLARE_MAC_BUF(mac); +#endif + + spin_lock_bh(&sta->plink_lock); + get_random_bytes(&llid, 2); + sta->llid = llid; + if (sta->plink_state != PLINK_LISTEN) { + spin_unlock_bh(&sta->plink_lock); + return -EBUSY; + } + sta->plink_state = PLINK_OPN_SNT; + mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); + spin_unlock_bh(&sta->plink_lock); + mpl_dbg("Mesh plink: starting establishment with %s\n", + print_mac(mac, sta->addr)); + + return mesh_plink_frame_tx(sdata->dev, PLINK_OPEN, + sta->addr, llid, 0, 0); +} + +void mesh_plink_block(struct sta_info *sta) +{ +#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG + DECLARE_MAC_BUF(mac); +#endif + + spin_lock_bh(&sta->plink_lock); + __mesh_plink_deactivate(sta); + sta->plink_state = PLINK_BLOCKED; + spin_unlock_bh(&sta->plink_lock); +} + +int mesh_plink_close(struct sta_info *sta) +{ + struct ieee80211_sub_if_data *sdata = sta->sdata; + __le16 llid, plid, reason; +#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG + DECLARE_MAC_BUF(mac); +#endif + + mpl_dbg("Mesh plink: closing link with %s\n", + print_mac(mac, sta->addr)); + spin_lock_bh(&sta->plink_lock); + sta->reason = cpu_to_le16(MESH_LINK_CANCELLED); + reason = sta->reason; + + if (sta->plink_state == PLINK_LISTEN || + sta->plink_state == PLINK_BLOCKED) { + mesh_plink_fsm_restart(sta); + spin_unlock_bh(&sta->plink_lock); + return 0; + } else if (sta->plink_state == PLINK_ESTAB) { + __mesh_plink_deactivate(sta); + /* The timer should not be running */ + mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); + } else if (!mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata))) + sta->ignore_plink_timer = true; + + sta->plink_state = PLINK_HOLDING; + llid = sta->llid; + plid = sta->plid; + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(sta->sdata->dev, PLINK_CLOSE, sta->addr, llid, + plid, reason); + return 0; +} + +void mesh_rx_plink_frame(struct net_device *dev, struct ieee80211_mgmt *mgmt, + size_t len, struct ieee80211_rx_status *rx_status) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct ieee802_11_elems elems; + struct sta_info *sta; + enum plink_event event; + enum plink_frame_type ftype; + size_t baselen; + u8 ie_len; + u8 *baseaddr; + __le16 plid, llid, reason; +#ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG + DECLARE_MAC_BUF(mac); +#endif + + if (is_multicast_ether_addr(mgmt->da)) { + mpl_dbg("Mesh plink: ignore frame from multicast address"); + return; + } + + baseaddr = mgmt->u.action.u.plink_action.variable; + baselen = (u8 *) mgmt->u.action.u.plink_action.variable - (u8 *) mgmt; + if (mgmt->u.action.u.plink_action.action_code == PLINK_CONFIRM) { + baseaddr += 4; + baselen -= 4; + } + ieee802_11_parse_elems(baseaddr, len - baselen, &elems); + if (!elems.peer_link) { + mpl_dbg("Mesh plink: missing necessary peer link ie\n"); + return; + } + + ftype = *((u8 *)PLINK_GET_FRAME_SUBTYPE(elems.peer_link)); + ie_len = elems.peer_link_len; + if ((ftype == PLINK_OPEN && ie_len != 3) || + (ftype == PLINK_CONFIRM && ie_len != 5) || + (ftype == PLINK_CLOSE && ie_len != 5 && ie_len != 7)) { + mpl_dbg("Mesh plink: incorrect plink ie length\n"); + return; + } + + if (ftype != PLINK_CLOSE && (!elems.mesh_id || !elems.mesh_config)) { + mpl_dbg("Mesh plink: missing necessary ie\n"); + return; + } + /* Note the lines below are correct, the llid in the frame is the plid + * from the point of view of this host. + */ + memcpy(&plid, PLINK_GET_LLID(elems.peer_link), 2); + if (ftype == PLINK_CONFIRM || (ftype == PLINK_CLOSE && ie_len == 7)) + memcpy(&llid, PLINK_GET_PLID(elems.peer_link), 2); + + rcu_read_lock(); + + sta = sta_info_get(local, mgmt->sa); + if (!sta && ftype != PLINK_OPEN) { + mpl_dbg("Mesh plink: cls or cnf from unknown peer\n"); + rcu_read_unlock(); + return; + } + + if (sta && sta->plink_state == PLINK_BLOCKED) { + rcu_read_unlock(); + return; + } + + /* Now we will figure out the appropriate event... */ + event = PLINK_UNDEFINED; + if (ftype != PLINK_CLOSE && (!mesh_matches_local(&elems, dev))) { + switch (ftype) { + case PLINK_OPEN: + event = OPN_RJCT; + break; + case PLINK_CONFIRM: + event = CNF_RJCT; + break; + case PLINK_CLOSE: + /* avoid warning */ + break; + } + spin_lock_bh(&sta->plink_lock); + } else if (!sta) { + /* ftype == PLINK_OPEN */ + u64 rates; + if (!mesh_plink_free_count(sdata)) { + mpl_dbg("Mesh plink error: no more free plinks\n"); + rcu_read_unlock(); + return; + } + + rates = ieee80211_sta_get_rates(local, &elems, rx_status->band); + sta = mesh_plink_alloc(sdata, mgmt->sa, rates); + if (!sta) { + mpl_dbg("Mesh plink error: plink table full\n"); + rcu_read_unlock(); + return; + } + if (sta_info_insert(sta)) { + rcu_read_unlock(); + return; + } + event = OPN_ACPT; + spin_lock_bh(&sta->plink_lock); + } else { + spin_lock_bh(&sta->plink_lock); + switch (ftype) { + case PLINK_OPEN: + if (!mesh_plink_free_count(sdata) || + (sta->plid && sta->plid != plid)) + event = OPN_IGNR; + else + event = OPN_ACPT; + break; + case PLINK_CONFIRM: + if (!mesh_plink_free_count(sdata) || + (sta->llid != llid || sta->plid != plid)) + event = CNF_IGNR; + else + event = CNF_ACPT; + break; + case PLINK_CLOSE: + if (sta->plink_state == PLINK_ESTAB) + /* Do not check for llid or plid. This does not + * follow the standard but since multiple plinks + * per sta are not supported, it is necessary in + * order to avoid a livelock when MP A sees an + * establish peer link to MP B but MP B does not + * see it. This can be caused by a timeout in + * B's peer link establishment or B beign + * restarted. + */ + event = CLS_ACPT; + else if (sta->plid != plid) + event = CLS_IGNR; + else if (ie_len == 7 && sta->llid != llid) + event = CLS_IGNR; + else + event = CLS_ACPT; + break; + default: + mpl_dbg("Mesh plink: unknown frame subtype\n"); + spin_unlock_bh(&sta->plink_lock); + rcu_read_unlock(); + return; + } + } + + mpl_dbg("Mesh plink (peer, state, llid, plid, event): %s %d %d %d %d\n", + print_mac(mac, mgmt->sa), sta->plink_state, + le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), + event); + reason = 0; + switch (sta->plink_state) { + /* spin_unlock as soon as state is updated at each case */ + case PLINK_LISTEN: + switch (event) { + case CLS_ACPT: + mesh_plink_fsm_restart(sta); + spin_unlock_bh(&sta->plink_lock); + break; + case OPN_ACPT: + sta->plink_state = PLINK_OPN_RCVD; + sta->plid = plid; + get_random_bytes(&llid, 2); + sta->llid = llid; + mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_OPEN, sta->addr, llid, + 0, 0); + mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, + llid, plid, 0); + break; + default: + spin_unlock_bh(&sta->plink_lock); + break; + } + break; + + case PLINK_OPN_SNT: + switch (event) { + case OPN_RJCT: + case CNF_RJCT: + reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION); + case CLS_ACPT: + if (!reason) + reason = cpu_to_le16(MESH_CLOSE_RCVD); + sta->reason = reason; + sta->plink_state = PLINK_HOLDING; + if (!mod_plink_timer(sta, + dot11MeshHoldingTimeout(sdata))) + sta->ignore_plink_timer = true; + + llid = sta->llid; + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid, + plid, reason); + break; + case OPN_ACPT: + /* retry timer is left untouched */ + sta->plink_state = PLINK_OPN_RCVD; + sta->plid = plid; + llid = sta->llid; + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, llid, + plid, 0); + break; + case CNF_ACPT: + sta->plink_state = PLINK_CNF_RCVD; + if (!mod_plink_timer(sta, + dot11MeshConfirmTimeout(sdata))) + sta->ignore_plink_timer = true; + + spin_unlock_bh(&sta->plink_lock); + break; + default: + spin_unlock_bh(&sta->plink_lock); + break; + } + break; + + case PLINK_OPN_RCVD: + switch (event) { + case OPN_RJCT: + case CNF_RJCT: + reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION); + case CLS_ACPT: + if (!reason) + reason = cpu_to_le16(MESH_CLOSE_RCVD); + sta->reason = reason; + sta->plink_state = PLINK_HOLDING; + if (!mod_plink_timer(sta, + dot11MeshHoldingTimeout(sdata))) + sta->ignore_plink_timer = true; + + llid = sta->llid; + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid, + plid, reason); + break; + case OPN_ACPT: + llid = sta->llid; + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, llid, + plid, 0); + break; + case CNF_ACPT: + del_timer(&sta->plink_timer); + sta->plink_state = PLINK_ESTAB; + mesh_plink_inc_estab_count(sdata); + spin_unlock_bh(&sta->plink_lock); + mpl_dbg("Mesh plink with %s ESTABLISHED\n", + print_mac(mac, sta->addr)); + break; + default: + spin_unlock_bh(&sta->plink_lock); + break; + } + break; + + case PLINK_CNF_RCVD: + switch (event) { + case OPN_RJCT: + case CNF_RJCT: + reason = cpu_to_le16(MESH_CAPABILITY_POLICY_VIOLATION); + case CLS_ACPT: + if (!reason) + reason = cpu_to_le16(MESH_CLOSE_RCVD); + sta->reason = reason; + sta->plink_state = PLINK_HOLDING; + if (!mod_plink_timer(sta, + dot11MeshHoldingTimeout(sdata))) + sta->ignore_plink_timer = true; + + llid = sta->llid; + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid, + plid, reason); + break; + case OPN_ACPT: + del_timer(&sta->plink_timer); + sta->plink_state = PLINK_ESTAB; + mesh_plink_inc_estab_count(sdata); + spin_unlock_bh(&sta->plink_lock); + mpl_dbg("Mesh plink with %s ESTABLISHED\n", + print_mac(mac, sta->addr)); + mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, llid, + plid, 0); + break; + default: + spin_unlock_bh(&sta->plink_lock); + break; + } + break; + + case PLINK_ESTAB: + switch (event) { + case CLS_ACPT: + reason = cpu_to_le16(MESH_CLOSE_RCVD); + sta->reason = reason; + __mesh_plink_deactivate(sta); + sta->plink_state = PLINK_HOLDING; + llid = sta->llid; + mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid, + plid, reason); + break; + case OPN_ACPT: + llid = sta->llid; + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CONFIRM, sta->addr, llid, + plid, 0); + break; + default: + spin_unlock_bh(&sta->plink_lock); + break; + } + break; + case PLINK_HOLDING: + switch (event) { + case CLS_ACPT: + if (del_timer(&sta->plink_timer)) + sta->ignore_plink_timer = 1; + mesh_plink_fsm_restart(sta); + spin_unlock_bh(&sta->plink_lock); + break; + case OPN_ACPT: + case CNF_ACPT: + case OPN_RJCT: + case CNF_RJCT: + llid = sta->llid; + reason = sta->reason; + spin_unlock_bh(&sta->plink_lock); + mesh_plink_frame_tx(dev, PLINK_CLOSE, sta->addr, llid, + plid, reason); + break; + default: + spin_unlock_bh(&sta->plink_lock); + } + break; + default: + /* should not get here, PLINK_BLOCKED is dealt with at the + * beggining of the function + */ + spin_unlock_bh(&sta->plink_lock); + break; + } + + rcu_read_unlock(); +} diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/mlme.c index c170685..6b75cb6 100644 --- a/net/mac80211/ieee80211_sta.c +++ b/net/mac80211/mlme.c @@ -24,19 +24,22 @@ #include <linux/wireless.h> #include <linux/random.h> #include <linux/etherdevice.h> +#include <linux/rtnetlink.h> #include <net/iw_handler.h> #include <asm/types.h> #include <net/mac80211.h> #include "ieee80211_i.h" -#include "ieee80211_rate.h" -#include "ieee80211_led.h" +#include "rate.h" +#include "led.h" +#include "mesh.h" #define IEEE80211_AUTH_TIMEOUT (HZ / 5) #define IEEE80211_AUTH_MAX_TRIES 3 #define IEEE80211_ASSOC_TIMEOUT (HZ / 5) #define IEEE80211_ASSOC_MAX_TRIES 3 #define IEEE80211_MONITORING_INTERVAL (2 * HZ) +#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ) #define IEEE80211_PROBE_INTERVAL (60 * HZ) #define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ) #define IEEE80211_SCAN_INTERVAL (2 * HZ) @@ -49,12 +52,11 @@ #define IEEE80211_SCAN_RESULT_EXPIRE (10 * HZ) #define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ) #define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ) +#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ) #define IEEE80211_IBSS_MAX_STA_ENTRIES 128 -#define IEEE80211_FC(type, stype) cpu_to_le16(type | stype) - #define ERP_INFO_USE_PROTECTION BIT(1) /* mgmt header + 1 byte action code */ @@ -74,7 +76,7 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, u8 *ssid, size_t ssid_len); static struct ieee80211_sta_bss * -ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel, +ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, u8 *ssid, u8 ssid_len); static void ieee80211_rx_bss_put(struct net_device *dev, struct ieee80211_sta_bss *bss); @@ -87,46 +89,8 @@ static int ieee80211_sta_config_auth(struct net_device *dev, struct ieee80211_if_sta *ifsta); -/* Parsed Information Elements */ -struct ieee802_11_elems { - /* pointers to IEs */ - u8 *ssid; - u8 *supp_rates; - u8 *fh_params; - u8 *ds_params; - u8 *cf_params; - u8 *tim; - u8 *ibss_params; - u8 *challenge; - u8 *wpa; - u8 *rsn; - u8 *erp_info; - u8 *ext_supp_rates; - u8 *wmm_info; - u8 *wmm_param; - u8 *ht_cap_elem; - u8 *ht_info_elem; - /* length of them, respectively */ - u8 ssid_len; - u8 supp_rates_len; - u8 fh_params_len; - u8 ds_params_len; - u8 cf_params_len; - u8 tim_len; - u8 ibss_params_len; - u8 challenge_len; - u8 wpa_len; - u8 rsn_len; - u8 erp_info_len; - u8 ext_supp_rates_len; - u8 wmm_info_len; - u8 wmm_param_len; - u8 ht_cap_elem_len; - u8 ht_info_elem_len; -}; - -static void ieee802_11_parse_elems(u8 *start, size_t len, - struct ieee802_11_elems *elems) +void ieee802_11_parse_elems(u8 *start, size_t len, + struct ieee802_11_elems *elems) { size_t left = len; u8 *pos = start; @@ -215,6 +179,30 @@ static void ieee802_11_parse_elems(u8 *start, size_t len, elems->ht_info_elem = pos; elems->ht_info_elem_len = elen; break; + case WLAN_EID_MESH_ID: + elems->mesh_id = pos; + elems->mesh_id_len = elen; + break; + case WLAN_EID_MESH_CONFIG: + elems->mesh_config = pos; + elems->mesh_config_len = elen; + break; + case WLAN_EID_PEER_LINK: + elems->peer_link = pos; + elems->peer_link_len = elen; + break; + case WLAN_EID_PREQ: + elems->preq = pos; + elems->preq_len = elen; + break; + case WLAN_EID_PREP: + elems->prep = pos; + elems->prep_len = elen; + break; + case WLAN_EID_PERR: + elems->perr = pos; + elems->perr_len = elen; + break; default: break; } @@ -227,12 +215,61 @@ static void ieee802_11_parse_elems(u8 *start, size_t len, static int ecw2cw(int ecw) { - int cw = 1; - while (ecw > 0) { - cw <<= 1; - ecw--; + return (1 << ecw) - 1; +} + + +static void ieee80211_sta_def_wmm_params(struct net_device *dev, + struct ieee80211_sta_bss *bss, + int ibss) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + int i, have_higher_than_11mbit = 0; + + + /* cf. IEEE 802.11 9.2.12 */ + for (i = 0; i < bss->supp_rates_len; i++) + if ((bss->supp_rates[i] & 0x7f) * 5 > 110) + have_higher_than_11mbit = 1; + + if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && + have_higher_than_11mbit) + sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; + else + sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; + + + if (local->ops->conf_tx) { + struct ieee80211_tx_queue_params qparam; + + memset(&qparam, 0, sizeof(qparam)); + + qparam.aifs = 2; + + if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && + !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE)) + qparam.cw_min = 31; + else + qparam.cw_min = 15; + + qparam.cw_max = 1023; + qparam.txop = 0; + + for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++) + local->ops->conf_tx(local_to_hw(local), + i + IEEE80211_TX_QUEUE_DATA0, + &qparam); + + if (ibss) { + /* IBSS uses different parameters for Beacon sending */ + qparam.cw_min++; + qparam.cw_min *= 2; + qparam.cw_min--; + local->ops->conf_tx(local_to_hw(local), + IEEE80211_TX_QUEUE_BEACON, &qparam); + } } - return cw - 1; } static void ieee80211_sta_wmm_params(struct net_device *dev, @@ -297,12 +334,13 @@ static void ieee80211_sta_wmm_params(struct net_device *dev, params.aifs = pos[0] & 0x0f; params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); params.cw_min = ecw2cw(pos[1] & 0x0f); - /* TXOP is in units of 32 usec; burst_time in 0.1 ms */ - params.burst_time = (pos[2] | (pos[3] << 8)) * 32 / 100; + params.txop = pos[2] | (pos[3] << 8); +#ifdef CONFIG_MAC80211_DEBUG printk(KERN_DEBUG "%s: WMM queue=%d aci=%d acm=%d aifs=%d " - "cWmin=%d cWmax=%d burst=%d\n", + "cWmin=%d cWmax=%d txop=%d\n", dev->name, queue, aci, acm, params.aifs, params.cw_min, - params.cw_max, params.burst_time); + params.cw_max, params.txop); +#endif /* TODO: handle ACM (block TX, fallback to next lowest allowed * AC for now) */ if (local->ops->conf_tx(local_to_hw(local), queue, ¶ms)) { @@ -477,6 +515,7 @@ static void ieee80211_set_associated(struct net_device *dev, { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; + struct ieee80211_conf *conf = &local_to_hw(local)->conf; union iwreq_data wrqu; u32 changed = BSS_CHANGED_ASSOC; @@ -489,31 +528,49 @@ static void ieee80211_set_associated(struct net_device *dev, return; bss = ieee80211_rx_bss_get(dev, ifsta->bssid, - local->hw.conf.channel, + conf->channel->center_freq, ifsta->ssid, ifsta->ssid_len); if (bss) { + /* set timing information */ + sdata->bss_conf.beacon_int = bss->beacon_int; + sdata->bss_conf.timestamp = bss->timestamp; + changed |= ieee80211_handle_bss_capability(sdata, bss); + ieee80211_rx_bss_put(dev, bss); } + if (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { + changed |= BSS_CHANGED_HT; + sdata->bss_conf.assoc_ht = 1; + sdata->bss_conf.ht_conf = &conf->ht_conf; + sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf; + } + netif_carrier_on(dev); ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET; memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN); memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN); ieee80211_sta_send_associnfo(dev, ifsta); } else { + ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid); ifsta->flags &= ~IEEE80211_STA_ASSOCIATED; - netif_carrier_off(dev); ieee80211_reset_erp_info(dev); + + sdata->bss_conf.assoc_ht = 0; + sdata->bss_conf.ht_conf = NULL; + sdata->bss_conf.ht_bss_conf = NULL; + memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN); } - wrqu.ap_addr.sa_family = ARPHRD_ETHER; - wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); ifsta->last_probe = jiffies; ieee80211_led_assoc(local, assoc); + sdata->bss_conf.assoc = assoc; ieee80211_bss_info_change_notify(sdata, changed); + wrqu.ap_addr.sa_family = ARPHRD_ETHER; + wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); } static void ieee80211_set_disassoc(struct net_device *dev, @@ -525,8 +582,8 @@ static void ieee80211_set_disassoc(struct net_device *dev, ieee80211_set_associated(dev, ifsta, 0); } -static void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, - int encrypt) +void ieee80211_sta_tx(struct net_device *dev, struct sk_buff *skb, + int encrypt) { struct ieee80211_sub_if_data *sdata; struct ieee80211_tx_packet_data *pkt_data; @@ -613,7 +670,6 @@ static void ieee80211_send_assoc(struct net_device *dev, struct ieee80211_if_sta *ifsta) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_hw_mode *mode; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; u8 *pos, *ies; @@ -621,6 +677,7 @@ static void ieee80211_send_assoc(struct net_device *dev, u16 capab; struct ieee80211_sta_bss *bss; int wmm = 0; + struct ieee80211_supported_band *sband; skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt) + 200 + ifsta->extra_ie_len + @@ -632,13 +689,19 @@ static void ieee80211_send_assoc(struct net_device *dev, } skb_reserve(skb, local->hw.extra_tx_headroom); - mode = local->oper_hw_mode; + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + capab = ifsta->capab; - if (mode->mode == MODE_IEEE80211G) { - capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME | - WLAN_CAPABILITY_SHORT_PREAMBLE; + + if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) { + if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) + capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; + if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) + capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; } - bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel, + + bss = ieee80211_rx_bss_get(dev, ifsta->bssid, + local->hw.conf.channel->center_freq, ifsta->ssid, ifsta->ssid_len); if (bss) { if (bss->capability & WLAN_CAPABILITY_PRIVACY) @@ -677,23 +740,23 @@ static void ieee80211_send_assoc(struct net_device *dev, *pos++ = ifsta->ssid_len; memcpy(pos, ifsta->ssid, ifsta->ssid_len); - len = mode->num_rates; + len = sband->n_bitrates; if (len > 8) len = 8; pos = skb_put(skb, len + 2); *pos++ = WLAN_EID_SUPP_RATES; *pos++ = len; for (i = 0; i < len; i++) { - int rate = mode->rates[i].rate; + int rate = sband->bitrates[i].bitrate; *pos++ = (u8) (rate / 5); } - if (mode->num_rates > len) { - pos = skb_put(skb, mode->num_rates - len + 2); + if (sband->n_bitrates > len) { + pos = skb_put(skb, sband->n_bitrates - len + 2); *pos++ = WLAN_EID_EXT_SUPP_RATES; - *pos++ = mode->num_rates - len; - for (i = len; i < mode->num_rates; i++) { - int rate = mode->rates[i].rate; + *pos++ = sband->n_bitrates - len; + for (i = len; i < sband->n_bitrates; i++) { + int rate = sband->bitrates[i].bitrate; *pos++ = (u8) (rate / 5); } } @@ -716,17 +779,18 @@ static void ieee80211_send_assoc(struct net_device *dev, *pos++ = 0; } /* wmm support is a must to HT */ - if (wmm && mode->ht_info.ht_supported) { - __le16 tmp = cpu_to_le16(mode->ht_info.cap); + if (wmm && sband->ht_info.ht_supported) { + __le16 tmp = cpu_to_le16(sband->ht_info.cap); pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2); *pos++ = WLAN_EID_HT_CAPABILITY; *pos++ = sizeof(struct ieee80211_ht_cap); memset(pos, 0, sizeof(struct ieee80211_ht_cap)); memcpy(pos, &tmp, sizeof(u16)); pos += sizeof(u16); - *pos++ = (mode->ht_info.ampdu_factor | - (mode->ht_info.ampdu_density << 2)); - memcpy(pos, mode->ht_info.supp_mcs_set, 16); + /* TODO: needs a define here for << 2 */ + *pos++ = sband->ht_info.ampdu_factor | + (sband->ht_info.ampdu_density << 2); + memcpy(pos, sband->ht_info.supp_mcs_set, 16); } kfree(ifsta->assocreq_ies); @@ -809,7 +873,8 @@ static int ieee80211_privacy_mismatch(struct net_device *dev, if (!ifsta || (ifsta->flags & IEEE80211_STA_MIXED_CELL)) return 0; - bss = ieee80211_rx_bss_get(dev, ifsta->bssid, local->hw.conf.channel, + bss = ieee80211_rx_bss_get(dev, ifsta->bssid, + local->hw.conf.channel->center_freq, ifsta->ssid, ifsta->ssid_len); if (!bss) return 0; @@ -872,6 +937,8 @@ static void ieee80211_associated(struct net_device *dev, ifsta->state = IEEE80211_ASSOCIATED; + rcu_read_lock(); + sta = sta_info_get(local, ifsta->bssid); if (!sta) { printk(KERN_DEBUG "%s: No STA entry for own AP %s\n", @@ -887,7 +954,7 @@ static void ieee80211_associated(struct net_device *dev, "range\n", dev->name, print_mac(mac, ifsta->bssid)); disassoc = 1; - sta_info_free(sta); + sta_info_unlink(&sta); } else ieee80211_send_probe_req(dev, ifsta->bssid, local->scan_ssid, @@ -903,8 +970,13 @@ static void ieee80211_associated(struct net_device *dev, ifsta->ssid_len); } } - sta_info_put(sta); } + + rcu_read_unlock(); + + if (disassoc && sta) + sta_info_destroy(sta); + if (disassoc) { ifsta->state = IEEE80211_DISABLED; ieee80211_set_associated(dev, ifsta, 0); @@ -919,7 +991,7 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, u8 *ssid, size_t ssid_len) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_hw_mode *mode; + struct ieee80211_supported_band *sband; struct sk_buff *skb; struct ieee80211_mgmt *mgmt; u8 *pos, *supp_rates, *esupp_rates = NULL; @@ -953,11 +1025,10 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, supp_rates = skb_put(skb, 2); supp_rates[0] = WLAN_EID_SUPP_RATES; supp_rates[1] = 0; - mode = local->oper_hw_mode; - for (i = 0; i < mode->num_rates; i++) { - struct ieee80211_rate *rate = &mode->rates[i]; - if (!(rate->flags & IEEE80211_RATE_SUPPORTED)) - continue; + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + + for (i = 0; i < sband->n_bitrates; i++) { + struct ieee80211_rate *rate = &sband->bitrates[i]; if (esupp_rates) { pos = skb_put(skb, 1); esupp_rates[1]++; @@ -970,7 +1041,7 @@ static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst, pos = skb_put(skb, 1); supp_rates[1]++; } - *pos = rate->rate / 5; + *pos = rate->bitrate / 5; } ieee80211_sta_tx(dev, skb, 0); @@ -1065,6 +1136,58 @@ static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid, return; } +void ieee80211_send_addba_request(struct net_device *dev, const u8 *da, + u16 tid, u8 dialog_token, u16 start_seq_num, + u16 agg_size, u16 timeout) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_if_sta *ifsta = &sdata->u.sta; + struct sk_buff *skb; + struct ieee80211_mgmt *mgmt; + u16 capab; + + skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom + 1 + + sizeof(mgmt->u.action.u.addba_req)); + + + if (!skb) { + printk(KERN_ERR "%s: failed to allocate buffer " + "for addba request frame\n", dev->name); + return; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); + memset(mgmt, 0, 24); + memcpy(mgmt->da, da, ETH_ALEN); + memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); + if (sdata->vif.type == IEEE80211_IF_TYPE_AP) + memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN); + else + memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); + + mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, + IEEE80211_STYPE_ACTION); + + skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_req)); + + mgmt->u.action.category = WLAN_CATEGORY_BACK; + mgmt->u.action.u.addba_req.action_code = WLAN_ACTION_ADDBA_REQ; + + mgmt->u.action.u.addba_req.dialog_token = dialog_token; + capab = (u16)(1 << 1); /* bit 1 aggregation policy */ + capab |= (u16)(tid << 2); /* bit 5:2 TID number */ + capab |= (u16)(agg_size << 6); /* bit 15:6 max size of aggergation */ + + mgmt->u.action.u.addba_req.capab = cpu_to_le16(capab); + + mgmt->u.action.u.addba_req.timeout = cpu_to_le16(timeout); + mgmt->u.action.u.addba_req.start_seq_num = + cpu_to_le16(start_seq_num << 4); + + ieee80211_sta_tx(dev, skb, 0); +} + static void ieee80211_sta_process_addba_request(struct net_device *dev, struct ieee80211_mgmt *mgmt, size_t len) @@ -1079,9 +1202,13 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev, int ret = -EOPNOTSUPP; DECLARE_MAC_BUF(mac); + rcu_read_lock(); + sta = sta_info_get(local, mgmt->sa); - if (!sta) + if (!sta) { + rcu_read_unlock(); return; + } /* extract session parameters from addba request frame */ dialog_token = mgmt->u.action.u.addba_req.dialog_token; @@ -1105,7 +1232,7 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev, status = WLAN_STATUS_INVALID_QOS_PARAM; #ifdef CONFIG_MAC80211_HT_DEBUG if (net_ratelimit()) - printk(KERN_DEBUG "Block Ack Req with bad params from " + printk(KERN_DEBUG "AddBA Req with bad params from " "%s on tid %u. policy %d, buffer size %d\n", print_mac(mac, mgmt->sa), tid, ba_policy, buf_size); @@ -1114,26 +1241,45 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev, } /* determine default buffer size */ if (buf_size == 0) { - struct ieee80211_hw_mode *mode = conf->mode; + struct ieee80211_supported_band *sband; + + sband = local->hw.wiphy->bands[conf->channel->band]; buf_size = IEEE80211_MIN_AMPDU_BUF; - buf_size = buf_size << mode->ht_info.ampdu_factor; + buf_size = buf_size << sband->ht_info.ampdu_factor; } - tid_agg_rx = &sta->ampdu_mlme.tid_rx[tid]; /* examine state machine */ spin_lock_bh(&sta->ampdu_mlme.ampdu_rx); - if (tid_agg_rx->state != HT_AGG_STATE_IDLE) { + if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) { #ifdef CONFIG_MAC80211_HT_DEBUG if (net_ratelimit()) - printk(KERN_DEBUG "unexpected Block Ack Req from " + printk(KERN_DEBUG "unexpected AddBA Req from " "%s on tid %u\n", print_mac(mac, mgmt->sa), tid); #endif /* CONFIG_MAC80211_HT_DEBUG */ goto end; } + /* prepare A-MPDU MLME for Rx aggregation */ + sta->ampdu_mlme.tid_rx[tid] = + kmalloc(sizeof(struct tid_ampdu_rx), GFP_ATOMIC); + if (!sta->ampdu_mlme.tid_rx[tid]) { + if (net_ratelimit()) + printk(KERN_ERR "allocate rx mlme to tid %d failed\n", + tid); + goto end; + } + /* rx timer */ + sta->ampdu_mlme.tid_rx[tid]->session_timer.function = + sta_rx_agg_session_timer_expired; + sta->ampdu_mlme.tid_rx[tid]->session_timer.data = + (unsigned long)&sta->timer_to_tid[tid]; + init_timer(&sta->ampdu_mlme.tid_rx[tid]->session_timer); + + tid_agg_rx = sta->ampdu_mlme.tid_rx[tid]; + /* prepare reordering buffer */ tid_agg_rx->reorder_buf = kmalloc(buf_size * sizeof(struct sk_buf *), GFP_ATOMIC); @@ -1141,6 +1287,7 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev, if (net_ratelimit()) printk(KERN_ERR "can not allocate reordering buffer " "to tid %d\n", tid); + kfree(sta->ampdu_mlme.tid_rx[tid]); goto end; } memset(tid_agg_rx->reorder_buf, 0, @@ -1148,18 +1295,20 @@ static void ieee80211_sta_process_addba_request(struct net_device *dev, if (local->ops->ampdu_action) ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_START, - sta->addr, tid, start_seq_num); + sta->addr, tid, &start_seq_num); #ifdef CONFIG_MAC80211_HT_DEBUG - printk(KERN_DEBUG "Rx A-MPDU on tid %d result %d", tid, ret); + printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret); #endif /* CONFIG_MAC80211_HT_DEBUG */ if (ret) { kfree(tid_agg_rx->reorder_buf); + kfree(tid_agg_rx); + sta->ampdu_mlme.tid_rx[tid] = NULL; goto end; } /* change state and send addba resp */ - tid_agg_rx->state = HT_AGG_STATE_OPERATIONAL; + sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL; tid_agg_rx->dialog_token = dialog_token; tid_agg_rx->ssn = start_seq_num; tid_agg_rx->head_seq_num = start_seq_num; @@ -1171,13 +1320,89 @@ end: spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); end_no_lock: - ieee80211_send_addba_resp(sta->dev, sta->addr, tid, dialog_token, - status, 1, buf_size, timeout); - sta_info_put(sta); + ieee80211_send_addba_resp(sta->sdata->dev, sta->addr, tid, + dialog_token, status, 1, buf_size, timeout); + rcu_read_unlock(); } -static void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, - u16 initiator, u16 reason_code) +static void ieee80211_sta_process_addba_resp(struct net_device *dev, + struct ieee80211_mgmt *mgmt, + size_t len) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_hw *hw = &local->hw; + struct sta_info *sta; + u16 capab; + u16 tid; + u8 *state; + + rcu_read_lock(); + + sta = sta_info_get(local, mgmt->sa); + if (!sta) { + rcu_read_unlock(); + return; + } + + capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); + tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; + + state = &sta->ampdu_mlme.tid_state_tx[tid]; + + spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); + + if (!(*state & HT_ADDBA_REQUESTED_MSK)) { + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + printk(KERN_DEBUG "state not HT_ADDBA_REQUESTED_MSK:" + "%d\n", *state); + goto addba_resp_exit; + } + + if (mgmt->u.action.u.addba_resp.dialog_token != + sta->ampdu_mlme.tid_tx[tid]->dialog_token) { + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "wrong addBA response token, tid %d\n", tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + goto addba_resp_exit; + } + + del_timer_sync(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer); +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + if (le16_to_cpu(mgmt->u.action.u.addba_resp.status) + == WLAN_STATUS_SUCCESS) { + if (*state & HT_ADDBA_RECEIVED_MSK) + printk(KERN_DEBUG "double addBA response\n"); + + *state |= HT_ADDBA_RECEIVED_MSK; + sta->ampdu_mlme.addba_req_num[tid] = 0; + + if (*state == HT_AGG_STATE_OPERATIONAL) { + printk(KERN_DEBUG "Aggregation on for tid %d \n", tid); + ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]); + } + + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + printk(KERN_DEBUG "recipient accepted agg: tid %d \n", tid); + } else { + printk(KERN_DEBUG "recipient rejected agg: tid %d \n", tid); + + sta->ampdu_mlme.addba_req_num[tid]++; + /* this will allow the state check in stop_BA_session */ + *state = HT_AGG_STATE_OPERATIONAL; + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + ieee80211_stop_tx_ba_session(hw, sta->addr, tid, + WLAN_BACK_INITIATOR); + } + +addba_resp_exit: + rcu_read_unlock(); +} + +void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid, + u16 initiator, u16 reason_code) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); @@ -1227,58 +1452,71 @@ void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *ra, u16 tid, struct ieee80211_hw *hw = &local->hw; struct sta_info *sta; int ret, i; + DECLARE_MAC_BUF(mac); + + rcu_read_lock(); sta = sta_info_get(local, ra); - if (!sta) + if (!sta) { + rcu_read_unlock(); return; + } /* check if TID is in operational state */ spin_lock_bh(&sta->ampdu_mlme.ampdu_rx); - if (sta->ampdu_mlme.tid_rx[tid].state + if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL) { spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); - sta_info_put(sta); + rcu_read_unlock(); return; } - sta->ampdu_mlme.tid_rx[tid].state = + sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_REQ_STOP_BA_MSK | (initiator << HT_AGG_STATE_INITIATOR_SHIFT); - spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); + spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); /* stop HW Rx aggregation. ampdu_action existence * already verified in session init so we add the BUG_ON */ BUG_ON(!local->ops->ampdu_action); +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "Rx BA session stop requested for %s tid %u\n", + print_mac(mac, ra), tid); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_RX_STOP, - ra, tid, EINVAL); + ra, tid, NULL); if (ret) printk(KERN_DEBUG "HW problem - can not stop rx " "aggergation for tid %d\n", tid); /* shutdown timer has not expired */ if (initiator != WLAN_BACK_TIMER) - del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]. - session_timer); + del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer); /* check if this is a self generated aggregation halt */ if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER) ieee80211_send_delba(dev, ra, tid, 0, reason); /* free the reordering buffer */ - for (i = 0; i < sta->ampdu_mlme.tid_rx[tid].buf_size; i++) { - if (sta->ampdu_mlme.tid_rx[tid].reorder_buf[i]) { + for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) { + if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) { /* release the reordered frames */ - dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid].reorder_buf[i]); - sta->ampdu_mlme.tid_rx[tid].stored_mpdu_num--; - sta->ampdu_mlme.tid_rx[tid].reorder_buf[i] = NULL; + dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]); + sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--; + sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL; } } - kfree(sta->ampdu_mlme.tid_rx[tid].reorder_buf); + /* free resources */ + kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf); + kfree(sta->ampdu_mlme.tid_rx[tid]); + sta->ampdu_mlme.tid_rx[tid] = NULL; + sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE; - sta->ampdu_mlme.tid_rx[tid].state = HT_AGG_STATE_IDLE; - sta_info_put(sta); + rcu_read_unlock(); } + static void ieee80211_sta_process_delba(struct net_device *dev, struct ieee80211_mgmt *mgmt, size_t len) { @@ -1288,9 +1526,13 @@ static void ieee80211_sta_process_delba(struct net_device *dev, u16 initiator; DECLARE_MAC_BUF(mac); + rcu_read_lock(); + sta = sta_info_get(local, mgmt->sa); - if (!sta) + if (!sta) { + rcu_read_unlock(); return; + } params = le16_to_cpu(mgmt->u.action.u.delba.params); tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; @@ -1298,27 +1540,87 @@ static void ieee80211_sta_process_delba(struct net_device *dev, #ifdef CONFIG_MAC80211_HT_DEBUG if (net_ratelimit()) - printk(KERN_DEBUG "delba from %s on tid %d reason code %d\n", - print_mac(mac, mgmt->sa), tid, + printk(KERN_DEBUG "delba from %s (%s) tid %d reason code %d\n", + print_mac(mac, mgmt->sa), + initiator ? "initiator" : "recipient", tid, mgmt->u.action.u.delba.reason_code); #endif /* CONFIG_MAC80211_HT_DEBUG */ if (initiator == WLAN_BACK_INITIATOR) ieee80211_sta_stop_rx_ba_session(dev, sta->addr, tid, WLAN_BACK_INITIATOR, 0); - sta_info_put(sta); + else { /* WLAN_BACK_RECIPIENT */ + spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); + sta->ampdu_mlme.tid_state_tx[tid] = + HT_AGG_STATE_OPERATIONAL; + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + ieee80211_stop_tx_ba_session(&local->hw, sta->addr, tid, + WLAN_BACK_RECIPIENT); + } + rcu_read_unlock(); } /* - * After receiving Block Ack Request (BAR) we activated a - * timer after each frame arrives from the originator. + * After sending add Block Ack request we activated a timer until + * add Block Ack response will arrive from the recipient. + * If this timer expires sta_addba_resp_timer_expired will be executed. + */ +void sta_addba_resp_timer_expired(unsigned long data) +{ + /* not an elegant detour, but there is no choice as the timer passes + * only one argument, and both sta_info and TID are needed, so init + * flow in sta_info_create gives the TID as data, while the timer_to_id + * array gives the sta through container_of */ + u16 tid = *(int *)data; + struct sta_info *temp_sta = container_of((void *)data, + struct sta_info, timer_to_tid[tid]); + + struct ieee80211_local *local = temp_sta->local; + struct ieee80211_hw *hw = &local->hw; + struct sta_info *sta; + u8 *state; + + rcu_read_lock(); + + sta = sta_info_get(local, temp_sta->addr); + if (!sta) { + rcu_read_unlock(); + return; + } + + state = &sta->ampdu_mlme.tid_state_tx[tid]; + /* check if the TID waits for addBA response */ + spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); + if (!(*state & HT_ADDBA_REQUESTED_MSK)) { + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + *state = HT_AGG_STATE_IDLE; + printk(KERN_DEBUG "timer expired on tid %d but we are not " + "expecting addBA response there", tid); + goto timer_expired_exit; + } + + printk(KERN_DEBUG "addBA response timer expired on tid %d\n", tid); + + /* go through the state check in stop_BA_session */ + *state = HT_AGG_STATE_OPERATIONAL; + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); + ieee80211_stop_tx_ba_session(hw, temp_sta->addr, tid, + WLAN_BACK_INITIATOR); + +timer_expired_exit: + rcu_read_unlock(); +} + +/* + * After accepting the AddBA Request we activated a timer, + * resetting it after each frame that arrives from the originator. * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed. */ void sta_rx_agg_session_timer_expired(unsigned long data) { /* not an elegant detour, but there is no choice as the timer passes * only one argument, and verious sta_info are needed here, so init - * flow in sta_info_add gives the TID as data, while the timer_to_id + * flow in sta_info_create gives the TID as data, while the timer_to_id * array gives the sta through container_of */ u8 *ptid = (u8 *)data; u8 *timer_to_id = ptid - *ptid; @@ -1326,11 +1628,24 @@ void sta_rx_agg_session_timer_expired(unsigned long data) timer_to_tid[0]); printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid); - ieee80211_sta_stop_rx_ba_session(sta->dev, sta->addr, (u16)*ptid, - WLAN_BACK_TIMER, + ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr, + (u16)*ptid, WLAN_BACK_TIMER, WLAN_REASON_QSTA_TIMEOUT); } +void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + int i; + + for (i = 0; i < STA_TID_NUM; i++) { + ieee80211_stop_tx_ba_session(&local->hw, addr, i, + WLAN_BACK_INITIATOR); + ieee80211_sta_stop_rx_ba_session(dev, addr, i, + WLAN_BACK_RECIPIENT, + WLAN_REASON_QSTA_LEAVE_QBSS); + } +} static void ieee80211_rx_mgmt_auth(struct net_device *dev, struct ieee80211_if_sta *ifsta, @@ -1557,15 +1872,16 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, { struct ieee80211_local *local = sdata->local; struct net_device *dev = sdata->dev; - struct ieee80211_hw_mode *mode; + struct ieee80211_supported_band *sband; struct sta_info *sta; - u32 rates; + u64 rates, basic_rates; u16 capab_info, status_code, aid; struct ieee802_11_elems elems; struct ieee80211_bss_conf *bss_conf = &sdata->bss_conf; u8 *pos; int i, j; DECLARE_MAC_BUF(mac); + bool have_higher_than_11mbit = false; /* AssocResp and ReassocResp have identical structure, so process both * of them in this function. */ @@ -1635,22 +1951,23 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, if (ifsta->assocresp_ies) memcpy(ifsta->assocresp_ies, pos, ifsta->assocresp_ies_len); - /* set AID, ieee80211_set_associated() will tell the driver */ - bss_conf->aid = aid; - ieee80211_set_associated(dev, ifsta, 1); + rcu_read_lock(); /* Add STA entry for the AP */ sta = sta_info_get(local, ifsta->bssid); if (!sta) { struct ieee80211_sta_bss *bss; - sta = sta_info_add(local, dev, ifsta->bssid, GFP_KERNEL); + int err; + + sta = sta_info_alloc(sdata, ifsta->bssid, GFP_ATOMIC); if (!sta) { - printk(KERN_DEBUG "%s: failed to add STA entry for the" - " AP\n", dev->name); + printk(KERN_DEBUG "%s: failed to alloc STA entry for" + " the AP\n", dev->name); + rcu_read_unlock(); return; } bss = ieee80211_rx_bss_get(dev, ifsta->bssid, - local->hw.conf.channel, + local->hw.conf.channel->center_freq, ifsta->ssid, ifsta->ssid_len); if (bss) { sta->last_rssi = bss->rssi; @@ -1658,50 +1975,97 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, sta->last_noise = bss->noise; ieee80211_rx_bss_put(dev, bss); } + + err = sta_info_insert(sta); + if (err) { + printk(KERN_DEBUG "%s: failed to insert STA entry for" + " the AP (error %d)\n", dev->name, err); + rcu_read_unlock(); + return; + } } - sta->dev = dev; - sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP; + /* + * FIXME: Do we really need to update the sta_info's information here? + * We already know about the AP (we found it in our list) so it + * should already be filled with the right info, no? + * As is stands, all this is racy because typically we assume + * the information that is filled in here (except flags) doesn't + * change while a STA structure is alive. As such, it should move + * to between the sta_info_alloc() and sta_info_insert() above. + */ + + sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_AP | + WLAN_STA_AUTHORIZED; rates = 0; - mode = local->oper_hw_mode; + basic_rates = 0; + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + for (i = 0; i < elems.supp_rates_len; i++) { int rate = (elems.supp_rates[i] & 0x7f) * 5; - for (j = 0; j < mode->num_rates; j++) - if (mode->rates[j].rate == rate) + + if (rate > 110) + have_higher_than_11mbit = true; + + for (j = 0; j < sband->n_bitrates; j++) { + if (sband->bitrates[j].bitrate == rate) rates |= BIT(j); + if (elems.supp_rates[i] & 0x80) + basic_rates |= BIT(j); + } } + for (i = 0; i < elems.ext_supp_rates_len; i++) { int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; - for (j = 0; j < mode->num_rates; j++) - if (mode->rates[j].rate == rate) + + if (rate > 110) + have_higher_than_11mbit = true; + + for (j = 0; j < sband->n_bitrates; j++) { + if (sband->bitrates[j].bitrate == rate) rates |= BIT(j); + if (elems.ext_supp_rates[i] & 0x80) + basic_rates |= BIT(j); + } } - sta->supp_rates = rates; - if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && - local->ops->conf_ht) { - struct ieee80211_ht_bss_info bss_info; + sta->supp_rates[local->hw.conf.channel->band] = rates; + sdata->basic_rates = basic_rates; + /* cf. IEEE 802.11 9.2.12 */ + if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ && + have_higher_than_11mbit) + sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; + else + sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; + + if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param) { + struct ieee80211_ht_bss_info bss_info; ieee80211_ht_cap_ie_to_ht_info( (struct ieee80211_ht_cap *) elems.ht_cap_elem, &sta->ht_info); ieee80211_ht_addt_info_ie_to_ht_bss_info( (struct ieee80211_ht_addt_info *) elems.ht_info_elem, &bss_info); - ieee80211_hw_config_ht(local, 1, &sta->ht_info, &bss_info); + ieee80211_handle_ht(local, 1, &sta->ht_info, &bss_info); } rate_control_rate_init(sta, local); if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { sta->flags |= WLAN_STA_WME; + rcu_read_unlock(); ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, elems.wmm_param_len); - } - + } else + rcu_read_unlock(); - sta_info_put(sta); + /* set AID and assoc capability, + * ieee80211_set_associated() will tell the driver */ + bss_conf->aid = aid; + bss_conf->assoc_capability = capab_info; + ieee80211_set_associated(dev, ifsta, 1); ieee80211_associated(dev, ifsta); } @@ -1712,8 +2076,16 @@ static void __ieee80211_rx_bss_hash_add(struct net_device *dev, struct ieee80211_sta_bss *bss) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - bss->hnext = local->sta_bss_hash[STA_HASH(bss->bssid)]; - local->sta_bss_hash[STA_HASH(bss->bssid)] = bss; + u8 hash_idx; + + if (bss_mesh_cfg(bss)) + hash_idx = mesh_id_hash(bss_mesh_id(bss), + bss_mesh_id_len(bss)); + else + hash_idx = STA_HASH(bss->bssid); + + bss->hnext = local->sta_bss_hash[hash_idx]; + local->sta_bss_hash[hash_idx] = bss; } @@ -1740,7 +2112,7 @@ static void __ieee80211_rx_bss_hash_del(struct net_device *dev, static struct ieee80211_sta_bss * -ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel, +ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int freq, u8 *ssid, u8 ssid_len) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); @@ -1752,7 +2124,7 @@ ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel, atomic_inc(&bss->users); atomic_inc(&bss->users); memcpy(bss->bssid, bssid, ETH_ALEN); - bss->channel = channel; + bss->freq = freq; if (ssid && ssid_len <= IEEE80211_MAX_SSID_LEN) { memcpy(bss->ssid, ssid, ssid_len); bss->ssid_len = ssid_len; @@ -1766,9 +2138,8 @@ ieee80211_rx_bss_add(struct net_device *dev, u8 *bssid, int channel, return bss; } - static struct ieee80211_sta_bss * -ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel, +ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, u8 *ssid, u8 ssid_len) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); @@ -1777,8 +2148,9 @@ ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel, spin_lock_bh(&local->sta_bss_lock); bss = local->sta_bss_hash[STA_HASH(bssid)]; while (bss) { - if (!memcmp(bss->bssid, bssid, ETH_ALEN) && - bss->channel == channel && + if (!bss_mesh_cfg(bss) && + !memcmp(bss->bssid, bssid, ETH_ALEN) && + bss->freq == freq && bss->ssid_len == ssid_len && (ssid_len == 0 || !memcmp(bss->ssid, ssid, ssid_len))) { atomic_inc(&bss->users); @@ -1790,6 +2162,75 @@ ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int channel, return bss; } +#ifdef CONFIG_MAC80211_MESH +static struct ieee80211_sta_bss * +ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len, + u8 *mesh_cfg, int freq) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sta_bss *bss; + + spin_lock_bh(&local->sta_bss_lock); + bss = local->sta_bss_hash[mesh_id_hash(mesh_id, mesh_id_len)]; + while (bss) { + if (bss_mesh_cfg(bss) && + !memcmp(bss_mesh_cfg(bss), mesh_cfg, MESH_CFG_CMP_LEN) && + bss->freq == freq && + mesh_id_len == bss->mesh_id_len && + (mesh_id_len == 0 || !memcmp(bss->mesh_id, mesh_id, + mesh_id_len))) { + atomic_inc(&bss->users); + break; + } + bss = bss->hnext; + } + spin_unlock_bh(&local->sta_bss_lock); + return bss; +} + +static struct ieee80211_sta_bss * +ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len, + u8 *mesh_cfg, int mesh_config_len, int freq) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_sta_bss *bss; + + if (mesh_config_len != MESH_CFG_LEN) + return NULL; + + bss = kzalloc(sizeof(*bss), GFP_ATOMIC); + if (!bss) + return NULL; + + bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC); + if (!bss->mesh_cfg) { + kfree(bss); + return NULL; + } + + if (mesh_id_len && mesh_id_len <= IEEE80211_MAX_MESH_ID_LEN) { + bss->mesh_id = kmalloc(mesh_id_len, GFP_ATOMIC); + if (!bss->mesh_id) { + kfree(bss->mesh_cfg); + kfree(bss); + return NULL; + } + memcpy(bss->mesh_id, mesh_id, mesh_id_len); + } + + atomic_inc(&bss->users); + atomic_inc(&bss->users); + memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN); + bss->mesh_id_len = mesh_id_len; + bss->freq = freq; + spin_lock_bh(&local->sta_bss_lock); + /* TODO: order by RSSI? */ + list_add_tail(&bss->list, &local->sta_bss_list); + __ieee80211_rx_bss_hash_add(dev, bss); + spin_unlock_bh(&local->sta_bss_lock); + return bss; +} +#endif static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) { @@ -1797,6 +2238,8 @@ static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss) kfree(bss->rsn_ie); kfree(bss->wmm_ie); kfree(bss->ht_ie); + kfree(bss_mesh_id(bss)); + kfree(bss_mesh_cfg(bss)); kfree(bss); } @@ -1834,6 +2277,204 @@ void ieee80211_rx_bss_list_deinit(struct net_device *dev) } +static int ieee80211_sta_join_ibss(struct net_device *dev, + struct ieee80211_if_sta *ifsta, + struct ieee80211_sta_bss *bss) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + int res, rates, i, j; + struct sk_buff *skb; + struct ieee80211_mgmt *mgmt; + struct ieee80211_tx_control control; + struct rate_selection ratesel; + u8 *pos; + struct ieee80211_sub_if_data *sdata; + struct ieee80211_supported_band *sband; + + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + /* Remove possible STA entries from other IBSS networks. */ + sta_info_flush_delayed(sdata); + + if (local->ops->reset_tsf) { + /* Reset own TSF to allow time synchronization work. */ + local->ops->reset_tsf(local_to_hw(local)); + } + memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); + res = ieee80211_if_config(dev); + if (res) + return res; + + local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; + + sdata->drop_unencrypted = bss->capability & + WLAN_CAPABILITY_PRIVACY ? 1 : 0; + + res = ieee80211_set_freq(local, bss->freq); + + if (local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS) { + printk(KERN_DEBUG "%s: IBSS not allowed on frequency " + "%d MHz\n", dev->name, local->oper_channel->center_freq); + return -1; + } + + /* Set beacon template */ + skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); + do { + if (!skb) + break; + + skb_reserve(skb, local->hw.extra_tx_headroom); + + mgmt = (struct ieee80211_mgmt *) + skb_put(skb, 24 + sizeof(mgmt->u.beacon)); + memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); + mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, + IEEE80211_STYPE_BEACON); + memset(mgmt->da, 0xff, ETH_ALEN); + memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); + memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); + mgmt->u.beacon.beacon_int = + cpu_to_le16(local->hw.conf.beacon_int); + mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); + + pos = skb_put(skb, 2 + ifsta->ssid_len); + *pos++ = WLAN_EID_SSID; + *pos++ = ifsta->ssid_len; + memcpy(pos, ifsta->ssid, ifsta->ssid_len); + + rates = bss->supp_rates_len; + if (rates > 8) + rates = 8; + pos = skb_put(skb, 2 + rates); + *pos++ = WLAN_EID_SUPP_RATES; + *pos++ = rates; + memcpy(pos, bss->supp_rates, rates); + + if (bss->band == IEEE80211_BAND_2GHZ) { + pos = skb_put(skb, 2 + 1); + *pos++ = WLAN_EID_DS_PARAMS; + *pos++ = 1; + *pos++ = ieee80211_frequency_to_channel(bss->freq); + } + + pos = skb_put(skb, 2 + 2); + *pos++ = WLAN_EID_IBSS_PARAMS; + *pos++ = 2; + /* FIX: set ATIM window based on scan results */ + *pos++ = 0; + *pos++ = 0; + + if (bss->supp_rates_len > 8) { + rates = bss->supp_rates_len - 8; + pos = skb_put(skb, 2 + rates); + *pos++ = WLAN_EID_EXT_SUPP_RATES; + *pos++ = rates; + memcpy(pos, &bss->supp_rates[8], rates); + } + + memset(&control, 0, sizeof(control)); + rate_control_get_rate(dev, sband, skb, &ratesel); + if (!ratesel.rate) { + printk(KERN_DEBUG "%s: Failed to determine TX rate " + "for IBSS beacon\n", dev->name); + break; + } + control.vif = &sdata->vif; + control.tx_rate = ratesel.rate; + if (sdata->bss_conf.use_short_preamble && + ratesel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) + control.flags |= IEEE80211_TXCTL_SHORT_PREAMBLE; + control.antenna_sel_tx = local->hw.conf.antenna_sel_tx; + control.flags |= IEEE80211_TXCTL_NO_ACK; + control.retry_limit = 1; + + ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC); + if (ifsta->probe_resp) { + mgmt = (struct ieee80211_mgmt *) + ifsta->probe_resp->data; + mgmt->frame_control = + IEEE80211_FC(IEEE80211_FTYPE_MGMT, + IEEE80211_STYPE_PROBE_RESP); + } else { + printk(KERN_DEBUG "%s: Could not allocate ProbeResp " + "template for IBSS\n", dev->name); + } + + if (local->ops->beacon_update && + local->ops->beacon_update(local_to_hw(local), + skb, &control) == 0) { + printk(KERN_DEBUG "%s: Configured IBSS beacon " + "template\n", dev->name); + skb = NULL; + } + + rates = 0; + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + for (i = 0; i < bss->supp_rates_len; i++) { + int bitrate = (bss->supp_rates[i] & 0x7f) * 5; + for (j = 0; j < sband->n_bitrates; j++) + if (sband->bitrates[j].bitrate == bitrate) + rates |= BIT(j); + } + ifsta->supp_rates_bits[local->hw.conf.channel->band] = rates; + + ieee80211_sta_def_wmm_params(dev, bss, 1); + } while (0); + + if (skb) { + printk(KERN_DEBUG "%s: Failed to configure IBSS beacon " + "template\n", dev->name); + dev_kfree_skb(skb); + } + + ifsta->state = IEEE80211_IBSS_JOINED; + mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); + + ieee80211_rx_bss_put(dev, bss); + + return res; +} + +u64 ieee80211_sta_get_rates(struct ieee80211_local *local, + struct ieee802_11_elems *elems, + enum ieee80211_band band) +{ + struct ieee80211_supported_band *sband; + struct ieee80211_rate *bitrates; + size_t num_rates; + u64 supp_rates; + int i, j; + sband = local->hw.wiphy->bands[band]; + + if (!sband) { + WARN_ON(1); + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + } + + bitrates = sband->bitrates; + num_rates = sband->n_bitrates; + supp_rates = 0; + for (i = 0; i < elems->supp_rates_len + + elems->ext_supp_rates_len; i++) { + u8 rate = 0; + int own_rate; + if (i < elems->supp_rates_len) + rate = elems->supp_rates[i]; + else if (elems->ext_supp_rates) + rate = elems->ext_supp_rates + [i - elems->supp_rates_len]; + own_rate = 5 * (rate & 0x7f); + for (j = 0; j < num_rates; j++) + if (bitrates[j].bitrate == own_rate) + supp_rates |= BIT(j); + } + return supp_rates; +} + + static void ieee80211_rx_bss_info(struct net_device *dev, struct ieee80211_mgmt *mgmt, size_t len, @@ -1843,11 +2484,12 @@ static void ieee80211_rx_bss_info(struct net_device *dev, struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee802_11_elems elems; size_t baselen; - int channel, clen; + int freq, clen; struct ieee80211_sta_bss *bss; struct sta_info *sta; struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - u64 timestamp; + u64 beacon_timestamp, rx_timestamp; + struct ieee80211_channel *channel; DECLARE_MAC_BUF(mac); DECLARE_MAC_BUF(mac2); @@ -1864,104 +2506,77 @@ static void ieee80211_rx_bss_info(struct net_device *dev, if (baselen > len) return; - timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); + beacon_timestamp = le64_to_cpu(mgmt->u.beacon.timestamp); + ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); - if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && - memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) { -#ifdef CONFIG_MAC80211_IBSS_DEBUG - static unsigned long last_tsf_debug = 0; - u64 tsf; - if (local->ops->get_tsf) - tsf = local->ops->get_tsf(local_to_hw(local)); - else - tsf = -1LLU; - if (time_after(jiffies, last_tsf_debug + 5 * HZ)) { - printk(KERN_DEBUG "RX beacon SA=%s BSSID=" - "%s TSF=0x%llx BCN=0x%llx diff=%lld " - "@%lu\n", - print_mac(mac, mgmt->sa), print_mac(mac2, mgmt->bssid), - (unsigned long long)tsf, - (unsigned long long)timestamp, - (unsigned long long)(tsf - timestamp), - jiffies); - last_tsf_debug = jiffies; - } -#endif /* CONFIG_MAC80211_IBSS_DEBUG */ + if (ieee80211_vif_is_mesh(&sdata->vif) && elems.mesh_id && + elems.mesh_config && mesh_matches_local(&elems, dev)) { + u64 rates = ieee80211_sta_get_rates(local, &elems, + rx_status->band); + + mesh_neighbour_update(mgmt->sa, rates, dev, + mesh_peer_accepts_plinks(&elems, dev)); } - ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); + rcu_read_lock(); if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems.supp_rates && memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0 && (sta = sta_info_get(local, mgmt->sa))) { - struct ieee80211_hw_mode *mode; - struct ieee80211_rate *rates; - size_t num_rates; - u32 supp_rates, prev_rates; - int i, j; - - mode = local->sta_sw_scanning ? - local->scan_hw_mode : local->oper_hw_mode; - - if (local->sta_hw_scanning) { - /* search for the correct mode matches the beacon */ - list_for_each_entry(mode, &local->modes_list, list) - if (mode->mode == rx_status->phymode) - break; - - if (mode == NULL) - mode = local->oper_hw_mode; - } - rates = mode->rates; - num_rates = mode->num_rates; - - supp_rates = 0; - for (i = 0; i < elems.supp_rates_len + - elems.ext_supp_rates_len; i++) { - u8 rate = 0; - int own_rate; - if (i < elems.supp_rates_len) - rate = elems.supp_rates[i]; - else if (elems.ext_supp_rates) - rate = elems.ext_supp_rates - [i - elems.supp_rates_len]; - own_rate = 5 * (rate & 0x7f); - for (j = 0; j < num_rates; j++) - if (rates[j].rate == own_rate) - supp_rates |= BIT(j); - } + u64 prev_rates; + u64 supp_rates = ieee80211_sta_get_rates(local, &elems, + rx_status->band); - prev_rates = sta->supp_rates; - sta->supp_rates &= supp_rates; - if (sta->supp_rates == 0) { + prev_rates = sta->supp_rates[rx_status->band]; + sta->supp_rates[rx_status->band] &= supp_rates; + if (sta->supp_rates[rx_status->band] == 0) { /* No matching rates - this should not really happen. * Make sure that at least one rate is marked * supported to avoid issues with TX rate ctrl. */ - sta->supp_rates = sdata->u.sta.supp_rates_bits; + sta->supp_rates[rx_status->band] = + sdata->u.sta.supp_rates_bits[rx_status->band]; } - if (sta->supp_rates != prev_rates) { + if (sta->supp_rates[rx_status->band] != prev_rates) { printk(KERN_DEBUG "%s: updated supp_rates set for " - "%s based on beacon info (0x%x & 0x%x -> " - "0x%x)\n", - dev->name, print_mac(mac, sta->addr), prev_rates, - supp_rates, sta->supp_rates); + "%s based on beacon info (0x%llx & 0x%llx -> " + "0x%llx)\n", + dev->name, print_mac(mac, sta->addr), + (unsigned long long) prev_rates, + (unsigned long long) supp_rates, + (unsigned long long) sta->supp_rates[rx_status->band]); } - sta_info_put(sta); } - if (!elems.ssid) - return; + rcu_read_unlock(); if (elems.ds_params && elems.ds_params_len == 1) - channel = elems.ds_params[0]; + freq = ieee80211_channel_to_frequency(elems.ds_params[0]); else - channel = rx_status->channel; + freq = rx_status->freq; - bss = ieee80211_rx_bss_get(dev, mgmt->bssid, channel, - elems.ssid, elems.ssid_len); - if (!bss) { - bss = ieee80211_rx_bss_add(dev, mgmt->bssid, channel, + channel = ieee80211_get_channel(local->hw.wiphy, freq); + + if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) + return; + +#ifdef CONFIG_MAC80211_MESH + if (elems.mesh_config) + bss = ieee80211_rx_mesh_bss_get(dev, elems.mesh_id, + elems.mesh_id_len, elems.mesh_config, freq); + else +#endif + bss = ieee80211_rx_bss_get(dev, mgmt->bssid, freq, elems.ssid, elems.ssid_len); + if (!bss) { +#ifdef CONFIG_MAC80211_MESH + if (elems.mesh_config) + bss = ieee80211_rx_mesh_bss_add(dev, elems.mesh_id, + elems.mesh_id_len, elems.mesh_config, + elems.mesh_config_len, freq); + else +#endif + bss = ieee80211_rx_bss_add(dev, mgmt->bssid, freq, + elems.ssid, elems.ssid_len); if (!bss) return; } else { @@ -1973,18 +2588,29 @@ static void ieee80211_rx_bss_info(struct net_device *dev, #endif } - if (bss->probe_resp && beacon) { - /* Do not allow beacon to override data from Probe Response. */ - ieee80211_rx_bss_put(dev, bss); - return; - } - /* save the ERP value so that it is available at association time */ if (elems.erp_info && elems.erp_info_len >= 1) { bss->erp_value = elems.erp_info[0]; bss->has_erp_value = 1; } + if (elems.ht_cap_elem && + (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len || + memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) { + kfree(bss->ht_ie); + bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC); + if (bss->ht_ie) { + memcpy(bss->ht_ie, elems.ht_cap_elem - 2, + elems.ht_cap_elem_len + 2); + bss->ht_ie_len = elems.ht_cap_elem_len + 2; + } else + bss->ht_ie_len = 0; + } else if (!elems.ht_cap_elem && bss->ht_ie) { + kfree(bss->ht_ie); + bss->ht_ie = NULL; + bss->ht_ie_len = 0; + } + bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int); bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info); @@ -2006,6 +2632,26 @@ static void ieee80211_rx_bss_info(struct net_device *dev, bss->supp_rates_len += clen; } + bss->band = rx_status->band; + + bss->timestamp = beacon_timestamp; + bss->last_update = jiffies; + bss->rssi = rx_status->ssi; + bss->signal = rx_status->signal; + bss->noise = rx_status->noise; + if (!beacon && !bss->probe_resp) + bss->probe_resp = true; + + /* + * In STA mode, the remaining parameters should not be overridden + * by beacons because they're not necessarily accurate there. + */ + if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS && + bss->probe_resp && beacon) { + ieee80211_rx_bss_put(dev, bss); + return; + } + if (elems.wpa && (!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len || memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) { @@ -2038,6 +2684,20 @@ static void ieee80211_rx_bss_info(struct net_device *dev, bss->rsn_ie_len = 0; } + /* + * Cf. + * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC + * + * quoting: + * + * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia + * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi + * Alliance (September 1, 2004) is incorporated by reference herein. + * The inclusion of the WMM Parameters in probe responses and + * association responses is mandatory for WMM enabled networks. The + * inclusion of the WMM Parameters in beacons, however, is optional. + */ + if (elems.wmm_param && (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len || memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) { @@ -2054,44 +2714,62 @@ static void ieee80211_rx_bss_info(struct net_device *dev, bss->wmm_ie = NULL; bss->wmm_ie_len = 0; } - if (elems.ht_cap_elem && - (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len || - memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) { - kfree(bss->ht_ie); - bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC); - if (bss->ht_ie) { - memcpy(bss->ht_ie, elems.ht_cap_elem - 2, - elems.ht_cap_elem_len + 2); - bss->ht_ie_len = elems.ht_cap_elem_len + 2; - } else - bss->ht_ie_len = 0; - } else if (!elems.ht_cap_elem && bss->ht_ie) { - kfree(bss->ht_ie); - bss->ht_ie = NULL; - bss->ht_ie_len = 0; + + /* check if we need to merge IBSS */ + if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon && + !local->sta_sw_scanning && !local->sta_hw_scanning && + bss->capability & WLAN_CAPABILITY_IBSS && + bss->freq == local->oper_channel->center_freq && + elems.ssid_len == sdata->u.sta.ssid_len && + memcmp(elems.ssid, sdata->u.sta.ssid, sdata->u.sta.ssid_len) == 0) { + if (rx_status->flag & RX_FLAG_TSFT) { + /* in order for correct IBSS merging we need mactime + * + * since mactime is defined as the time the first data + * symbol of the frame hits the PHY, and the timestamp + * of the beacon is defined as "the time that the data + * symbol containing the first bit of the timestamp is + * transmitted to the PHY plus the transmitting STA’s + * delays through its local PHY from the MAC-PHY + * interface to its interface with the WM" + * (802.11 11.1.2) - equals the time this bit arrives at + * the receiver - we have to take into account the + * offset between the two. + * e.g: at 1 MBit that means mactime is 192 usec earlier + * (=24 bytes * 8 usecs/byte) than the beacon timestamp. + */ + int rate = local->hw.wiphy->bands[rx_status->band]-> + bitrates[rx_status->rate_idx].bitrate; + rx_timestamp = rx_status->mactime + (24 * 8 * 10 / rate); + } else if (local && local->ops && local->ops->get_tsf) + /* second best option: get current TSF */ + rx_timestamp = local->ops->get_tsf(local_to_hw(local)); + else + /* can't merge without knowing the TSF */ + rx_timestamp = -1LLU; +#ifdef CONFIG_MAC80211_IBSS_DEBUG + printk(KERN_DEBUG "RX beacon SA=%s BSSID=" + "%s TSF=0x%llx BCN=0x%llx diff=%lld @%lu\n", + print_mac(mac, mgmt->sa), + print_mac(mac2, mgmt->bssid), + (unsigned long long)rx_timestamp, + (unsigned long long)beacon_timestamp, + (unsigned long long)(rx_timestamp - beacon_timestamp), + jiffies); +#endif /* CONFIG_MAC80211_IBSS_DEBUG */ + if (beacon_timestamp > rx_timestamp) { +#ifndef CONFIG_MAC80211_IBSS_DEBUG + if (net_ratelimit()) +#endif + printk(KERN_DEBUG "%s: beacon TSF higher than " + "local TSF - IBSS merge with BSSID %s\n", + dev->name, print_mac(mac, mgmt->bssid)); + ieee80211_sta_join_ibss(dev, &sdata->u.sta, bss); + ieee80211_ibss_add_sta(dev, NULL, + mgmt->bssid, mgmt->sa); + } } - bss->hw_mode = rx_status->phymode; - bss->freq = rx_status->freq; - if (channel != rx_status->channel && - (bss->hw_mode == MODE_IEEE80211G || - bss->hw_mode == MODE_IEEE80211B) && - channel >= 1 && channel <= 14) { - static const int freq_list[] = { - 2412, 2417, 2422, 2427, 2432, 2437, 2442, - 2447, 2452, 2457, 2462, 2467, 2472, 2484 - }; - /* IEEE 802.11g/b mode can receive packets from neighboring - * channels, so map the channel into frequency. */ - bss->freq = freq_list[channel - 1]; - } - bss->timestamp = timestamp; - bss->last_update = jiffies; - bss->rssi = rx_status->ssi; - bss->signal = rx_status->signal; - bss->noise = rx_status->noise; - if (!beacon) - bss->probe_resp++; ieee80211_rx_bss_put(dev, bss); } @@ -2136,6 +2814,17 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev, ieee802_11_parse_elems(mgmt->u.beacon.variable, len - baselen, &elems); + if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { + ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, + elems.wmm_param_len); + } + + /* Do not send changes to driver if we are scanning. This removes + * requirement that driver's bss_info_changed function needs to be + * atomic. */ + if (local->sta_sw_scanning || local->sta_hw_scanning) + return; + if (elems.erp_info && elems.erp_info_len >= 1) changed |= ieee80211_handle_erp_ie(sdata, elems.erp_info[0]); else { @@ -2145,25 +2834,14 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev, } if (elems.ht_cap_elem && elems.ht_info_elem && - elems.wmm_param && local->ops->conf_ht && - conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { + elems.wmm_param && conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) { struct ieee80211_ht_bss_info bss_info; ieee80211_ht_addt_info_ie_to_ht_bss_info( (struct ieee80211_ht_addt_info *) elems.ht_info_elem, &bss_info); - /* check if AP changed bss inforamation */ - if ((conf->ht_bss_conf.primary_channel != - bss_info.primary_channel) || - (conf->ht_bss_conf.bss_cap != bss_info.bss_cap) || - (conf->ht_bss_conf.bss_op_mode != bss_info.bss_op_mode)) - ieee80211_hw_config_ht(local, 1, &conf->ht_conf, - &bss_info); - } - - if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) { - ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param, - elems.wmm_param_len); + changed |= ieee80211_handle_ht(local, 1, &conf->ht_conf, + &bss_info); } ieee80211_bss_info_change_notify(sdata, changed); @@ -2247,8 +2925,11 @@ static void ieee80211_rx_mgmt_probe_req(struct net_device *dev, static void ieee80211_rx_mgmt_action(struct net_device *dev, struct ieee80211_if_sta *ifsta, struct ieee80211_mgmt *mgmt, - size_t len) + size_t len, + struct ieee80211_rx_status *rx_status) { + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + if (len < IEEE80211_MIN_ACTION_SIZE) return; @@ -2261,6 +2942,12 @@ static void ieee80211_rx_mgmt_action(struct net_device *dev, break; ieee80211_sta_process_addba_request(dev, mgmt, len); break; + case WLAN_ACTION_ADDBA_RESP: + if (len < (IEEE80211_MIN_ACTION_SIZE + + sizeof(mgmt->u.action.u.addba_resp))) + break; + ieee80211_sta_process_addba_resp(dev, mgmt, len); + break; case WLAN_ACTION_DELBA: if (len < (IEEE80211_MIN_ACTION_SIZE + sizeof(mgmt->u.action.u.delba))) @@ -2274,7 +2961,18 @@ static void ieee80211_rx_mgmt_action(struct net_device *dev, break; } break; + case PLINK_CATEGORY: + if (ieee80211_vif_is_mesh(&sdata->vif)) + mesh_rx_plink_frame(dev, mgmt, len, rx_status); + break; + case MESH_PATH_SEL_CATEGORY: + if (ieee80211_vif_is_mesh(&sdata->vif)) + mesh_rx_path_sel_frame(dev, mgmt, len); + break; default: + if (net_ratelimit()) + printk(KERN_DEBUG "%s: Rx unknown action frame - " + "category=%d\n", dev->name, mgmt->u.action.category); break; } } @@ -2301,13 +2999,13 @@ void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb, case IEEE80211_STYPE_PROBE_REQ: case IEEE80211_STYPE_PROBE_RESP: case IEEE80211_STYPE_BEACON: + case IEEE80211_STYPE_ACTION: memcpy(skb->cb, rx_status, sizeof(*rx_status)); case IEEE80211_STYPE_AUTH: case IEEE80211_STYPE_ASSOC_RESP: case IEEE80211_STYPE_REASSOC_RESP: case IEEE80211_STYPE_DEAUTH: case IEEE80211_STYPE_DISASSOC: - case IEEE80211_STYPE_ACTION: skb_queue_tail(&ifsta->skb_queue, skb); queue_work(local->hw.workqueue, &ifsta->work); return; @@ -2366,7 +3064,7 @@ static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len); break; case IEEE80211_STYPE_ACTION: - ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len); + ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len, rx_status); break; } @@ -2374,7 +3072,7 @@ static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev, } -ieee80211_txrx_result +ieee80211_rx_result ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, struct ieee80211_rx_status *rx_status) { @@ -2382,31 +3080,31 @@ ieee80211_sta_rx_scan(struct net_device *dev, struct sk_buff *skb, u16 fc; if (skb->len < 2) - return TXRX_DROP; + return RX_DROP_UNUSABLE; mgmt = (struct ieee80211_mgmt *) skb->data; fc = le16_to_cpu(mgmt->frame_control); if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) - return TXRX_CONTINUE; + return RX_CONTINUE; if (skb->len < 24) - return TXRX_DROP; + return RX_DROP_MONITOR; if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP) { ieee80211_rx_mgmt_probe_resp(dev, mgmt, skb->len, rx_status); dev_kfree_skb(skb); - return TXRX_QUEUED; + return RX_QUEUED; } else if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) { ieee80211_rx_mgmt_beacon(dev, mgmt, skb->len, rx_status); dev_kfree_skb(skb); - return TXRX_QUEUED; + return RX_QUEUED; } } - return TXRX_CONTINUE; + return RX_CONTINUE; } @@ -2415,45 +3113,46 @@ static int ieee80211_sta_active_ibss(struct net_device *dev) struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); int active = 0; struct sta_info *sta; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + rcu_read_lock(); - read_lock_bh(&local->sta_lock); - list_for_each_entry(sta, &local->sta_list, list) { - if (sta->dev == dev && + list_for_each_entry_rcu(sta, &local->sta_list, list) { + if (sta->sdata == sdata && time_after(sta->last_rx + IEEE80211_IBSS_MERGE_INTERVAL, jiffies)) { active++; break; } } - read_unlock_bh(&local->sta_lock); + + rcu_read_unlock(); return active; } -static void ieee80211_sta_expire(struct net_device *dev) +static void ieee80211_sta_expire(struct net_device *dev, unsigned long exp_time) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct sta_info *sta, *tmp; LIST_HEAD(tmp_list); DECLARE_MAC_BUF(mac); + unsigned long flags; - write_lock_bh(&local->sta_lock); + spin_lock_irqsave(&local->sta_lock, flags); list_for_each_entry_safe(sta, tmp, &local->sta_list, list) - if (time_after(jiffies, sta->last_rx + - IEEE80211_IBSS_INACTIVITY_LIMIT)) { + if (time_after(jiffies, sta->last_rx + exp_time)) { printk(KERN_DEBUG "%s: expiring inactive STA %s\n", dev->name, print_mac(mac, sta->addr)); - __sta_info_get(sta); - sta_info_remove(sta); - list_add(&sta->list, &tmp_list); + __sta_info_unlink(&sta); + if (sta) + list_add(&sta->list, &tmp_list); } - write_unlock_bh(&local->sta_lock); + spin_unlock_irqrestore(&local->sta_lock, flags); - list_for_each_entry_safe(sta, tmp, &tmp_list, list) { - sta_info_free(sta); - sta_info_put(sta); - } + list_for_each_entry_safe(sta, tmp, &tmp_list, list) + sta_info_destroy(sta); } @@ -2462,7 +3161,7 @@ static void ieee80211_sta_merge_ibss(struct net_device *dev, { mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); - ieee80211_sta_expire(dev); + ieee80211_sta_expire(dev, IEEE80211_IBSS_INACTIVITY_LIMIT); if (ieee80211_sta_active_ibss(dev)) return; @@ -2472,6 +3171,36 @@ static void ieee80211_sta_merge_ibss(struct net_device *dev, } +#ifdef CONFIG_MAC80211_MESH +static void ieee80211_mesh_housekeeping(struct net_device *dev, + struct ieee80211_if_sta *ifsta) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + bool free_plinks; + + ieee80211_sta_expire(dev, IEEE80211_MESH_PEER_INACTIVITY_LIMIT); + mesh_path_expire(dev); + + free_plinks = mesh_plink_availables(sdata); + if (free_plinks != sdata->u.sta.accepting_plinks) + ieee80211_if_config_beacon(dev); + + mod_timer(&ifsta->timer, jiffies + + IEEE80211_MESH_HOUSEKEEPING_INTERVAL); +} + + +void ieee80211_start_mesh(struct net_device *dev) +{ + struct ieee80211_if_sta *ifsta; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + ifsta = &sdata->u.sta; + ifsta->state = IEEE80211_MESH_UP; + ieee80211_sta_timer((unsigned long)sdata); +} +#endif + + void ieee80211_sta_timer(unsigned long data) { struct ieee80211_sub_if_data *sdata = @@ -2483,7 +3212,6 @@ void ieee80211_sta_timer(unsigned long data) queue_work(local->hw.workqueue, &ifsta->work); } - void ieee80211_sta_work(struct work_struct *work) { struct ieee80211_sub_if_data *sdata = @@ -2500,7 +3228,8 @@ void ieee80211_sta_work(struct work_struct *work) return; if (sdata->vif.type != IEEE80211_IF_TYPE_STA && - sdata->vif.type != IEEE80211_IF_TYPE_IBSS) { + sdata->vif.type != IEEE80211_IF_TYPE_IBSS && + sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT) { printk(KERN_DEBUG "%s: ieee80211_sta_work: non-STA interface " "(type=%d)\n", dev->name, sdata->vif.type); return; @@ -2510,6 +3239,13 @@ void ieee80211_sta_work(struct work_struct *work) while ((skb = skb_dequeue(&ifsta->skb_queue))) ieee80211_sta_rx_queued_mgmt(dev, skb); +#ifdef CONFIG_MAC80211_MESH + if (ifsta->preq_queue_len && + time_after(jiffies, + ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval))) + mesh_path_start_discovery(dev); +#endif + if (ifsta->state != IEEE80211_AUTHENTICATE && ifsta->state != IEEE80211_ASSOCIATE && test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifsta->request)) { @@ -2545,6 +3281,11 @@ void ieee80211_sta_work(struct work_struct *work) case IEEE80211_IBSS_JOINED: ieee80211_sta_merge_ibss(dev, ifsta); break; +#ifdef CONFIG_MAC80211_MESH + case IEEE80211_MESH_UP: + ieee80211_mesh_housekeeping(dev, ifsta); + break; +#endif default: printk(KERN_DEBUG "ieee80211_sta_work: Unknown state %d\n", ifsta->state); @@ -2655,7 +3396,7 @@ static int ieee80211_sta_config_auth(struct net_device *dev, } spin_lock_bh(&local->sta_bss_lock); - freq = local->oper_channel->freq; + freq = local->oper_channel->center_freq; list_for_each_entry(bss, &local->sta_bss_list, list) { if (!(bss->capability & WLAN_CAPABILITY_ESS)) continue; @@ -2686,11 +3427,12 @@ static int ieee80211_sta_config_auth(struct net_device *dev, spin_unlock_bh(&local->sta_bss_lock); if (selected) { - ieee80211_set_channel(local, -1, selected->freq); + ieee80211_set_freq(local, selected->freq); if (!(ifsta->flags & IEEE80211_STA_SSID_SET)) ieee80211_sta_set_ssid(dev, selected->ssid, selected->ssid_len); ieee80211_sta_set_bssid(dev, selected->bssid); + ieee80211_sta_def_wmm_params(dev, selected, 0); ieee80211_rx_bss_put(dev, selected); ifsta->state = IEEE80211_AUTHENTICATE; ieee80211_sta_reset_auth(dev, ifsta); @@ -2710,162 +3452,6 @@ static int ieee80211_sta_config_auth(struct net_device *dev, return -1; } -static int ieee80211_sta_join_ibss(struct net_device *dev, - struct ieee80211_if_sta *ifsta, - struct ieee80211_sta_bss *bss) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - int res, rates, i, j; - struct sk_buff *skb; - struct ieee80211_mgmt *mgmt; - struct ieee80211_tx_control control; - struct ieee80211_hw_mode *mode; - struct rate_selection ratesel; - u8 *pos; - struct ieee80211_sub_if_data *sdata; - - /* Remove possible STA entries from other IBSS networks. */ - sta_info_flush(local, NULL); - - if (local->ops->reset_tsf) { - /* Reset own TSF to allow time synchronization work. */ - local->ops->reset_tsf(local_to_hw(local)); - } - memcpy(ifsta->bssid, bss->bssid, ETH_ALEN); - res = ieee80211_if_config(dev); - if (res) - return res; - - local->hw.conf.beacon_int = bss->beacon_int >= 10 ? bss->beacon_int : 10; - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - sdata->drop_unencrypted = bss->capability & - WLAN_CAPABILITY_PRIVACY ? 1 : 0; - - res = ieee80211_set_channel(local, -1, bss->freq); - - if (!(local->oper_channel->flag & IEEE80211_CHAN_W_IBSS)) { - printk(KERN_DEBUG "%s: IBSS not allowed on channel %d " - "(%d MHz)\n", dev->name, local->hw.conf.channel, - local->hw.conf.freq); - return -1; - } - - /* Set beacon template based on scan results */ - skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400); - do { - if (!skb) - break; - - skb_reserve(skb, local->hw.extra_tx_headroom); - - mgmt = (struct ieee80211_mgmt *) - skb_put(skb, 24 + sizeof(mgmt->u.beacon)); - memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); - mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_BEACON); - memset(mgmt->da, 0xff, ETH_ALEN); - memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN); - memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN); - mgmt->u.beacon.beacon_int = - cpu_to_le16(local->hw.conf.beacon_int); - mgmt->u.beacon.capab_info = cpu_to_le16(bss->capability); - - pos = skb_put(skb, 2 + ifsta->ssid_len); - *pos++ = WLAN_EID_SSID; - *pos++ = ifsta->ssid_len; - memcpy(pos, ifsta->ssid, ifsta->ssid_len); - - rates = bss->supp_rates_len; - if (rates > 8) - rates = 8; - pos = skb_put(skb, 2 + rates); - *pos++ = WLAN_EID_SUPP_RATES; - *pos++ = rates; - memcpy(pos, bss->supp_rates, rates); - - pos = skb_put(skb, 2 + 1); - *pos++ = WLAN_EID_DS_PARAMS; - *pos++ = 1; - *pos++ = bss->channel; - - pos = skb_put(skb, 2 + 2); - *pos++ = WLAN_EID_IBSS_PARAMS; - *pos++ = 2; - /* FIX: set ATIM window based on scan results */ - *pos++ = 0; - *pos++ = 0; - - if (bss->supp_rates_len > 8) { - rates = bss->supp_rates_len - 8; - pos = skb_put(skb, 2 + rates); - *pos++ = WLAN_EID_EXT_SUPP_RATES; - *pos++ = rates; - memcpy(pos, &bss->supp_rates[8], rates); - } - - memset(&control, 0, sizeof(control)); - rate_control_get_rate(dev, local->oper_hw_mode, skb, &ratesel); - if (!ratesel.rate) { - printk(KERN_DEBUG "%s: Failed to determine TX rate " - "for IBSS beacon\n", dev->name); - break; - } - control.vif = &sdata->vif; - control.tx_rate = - (sdata->bss_conf.use_short_preamble && - (ratesel.rate->flags & IEEE80211_RATE_PREAMBLE2)) ? - ratesel.rate->val2 : ratesel.rate->val; - control.antenna_sel_tx = local->hw.conf.antenna_sel_tx; - control.power_level = local->hw.conf.power_level; - control.flags |= IEEE80211_TXCTL_NO_ACK; - control.retry_limit = 1; - - ifsta->probe_resp = skb_copy(skb, GFP_ATOMIC); - if (ifsta->probe_resp) { - mgmt = (struct ieee80211_mgmt *) - ifsta->probe_resp->data; - mgmt->frame_control = - IEEE80211_FC(IEEE80211_FTYPE_MGMT, - IEEE80211_STYPE_PROBE_RESP); - } else { - printk(KERN_DEBUG "%s: Could not allocate ProbeResp " - "template for IBSS\n", dev->name); - } - - if (local->ops->beacon_update && - local->ops->beacon_update(local_to_hw(local), - skb, &control) == 0) { - printk(KERN_DEBUG "%s: Configured IBSS beacon " - "template based on scan results\n", dev->name); - skb = NULL; - } - - rates = 0; - mode = local->oper_hw_mode; - for (i = 0; i < bss->supp_rates_len; i++) { - int bitrate = (bss->supp_rates[i] & 0x7f) * 5; - for (j = 0; j < mode->num_rates; j++) - if (mode->rates[j].rate == bitrate) - rates |= BIT(j); - } - ifsta->supp_rates_bits = rates; - } while (0); - - if (skb) { - printk(KERN_DEBUG "%s: Failed to configure IBSS beacon " - "template\n", dev->name); - dev_kfree_skb(skb); - } - - ifsta->state = IEEE80211_IBSS_JOINED; - mod_timer(&ifsta->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL); - - ieee80211_rx_bss_put(dev, bss); - - return res; -} - static int ieee80211_sta_create_ibss(struct net_device *dev, struct ieee80211_if_sta *ifsta) @@ -2873,7 +3459,7 @@ static int ieee80211_sta_create_ibss(struct net_device *dev, struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_sta_bss *bss; struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_hw_mode *mode; + struct ieee80211_supported_band *sband; u8 bssid[ETH_ALEN], *pos; int i; DECLARE_MAC_BUF(mac); @@ -2895,28 +3481,28 @@ static int ieee80211_sta_create_ibss(struct net_device *dev, printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %s\n", dev->name, print_mac(mac, bssid)); - bss = ieee80211_rx_bss_add(dev, bssid, local->hw.conf.channel, + bss = ieee80211_rx_bss_add(dev, bssid, + local->hw.conf.channel->center_freq, sdata->u.sta.ssid, sdata->u.sta.ssid_len); if (!bss) return -ENOMEM; - mode = local->oper_hw_mode; + bss->band = local->hw.conf.channel->band; + sband = local->hw.wiphy->bands[bss->band]; if (local->hw.conf.beacon_int == 0) - local->hw.conf.beacon_int = 100; + local->hw.conf.beacon_int = 10000; bss->beacon_int = local->hw.conf.beacon_int; - bss->hw_mode = local->hw.conf.phymode; - bss->freq = local->hw.conf.freq; bss->last_update = jiffies; bss->capability = WLAN_CAPABILITY_IBSS; if (sdata->default_key) { bss->capability |= WLAN_CAPABILITY_PRIVACY; } else sdata->drop_unencrypted = 0; - bss->supp_rates_len = mode->num_rates; + bss->supp_rates_len = sband->n_bitrates; pos = bss->supp_rates; - for (i = 0; i < mode->num_rates; i++) { - int rate = mode->rates[i].rate; + for (i = 0; i < sband->n_bitrates; i++) { + int rate = sband->bitrates[i].bitrate; *pos++ = (u8) (rate / 5); } @@ -2965,7 +3551,8 @@ static int ieee80211_sta_find_ibss(struct net_device *dev, "%s\n", print_mac(mac, bssid), print_mac(mac2, ifsta->bssid)); #endif /* CONFIG_MAC80211_IBSS_DEBUG */ if (found && memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0 && - (bss = ieee80211_rx_bss_get(dev, bssid, local->hw.conf.channel, + (bss = ieee80211_rx_bss_get(dev, bssid, + local->hw.conf.channel->center_freq, ifsta->ssid, ifsta->ssid_len))) { printk(KERN_DEBUG "%s: Selected IBSS BSSID %s" " based on configured SSID\n", @@ -2993,13 +3580,13 @@ static int ieee80211_sta_find_ibss(struct net_device *dev, if (time_after(jiffies, ifsta->ibss_join_req + IEEE80211_IBSS_JOIN_TIMEOUT)) { if ((ifsta->flags & IEEE80211_STA_CREATE_IBSS) && - local->oper_channel->flag & IEEE80211_CHAN_W_IBSS) + (!(local->oper_channel->flags & + IEEE80211_CHAN_NO_IBSS))) return ieee80211_sta_create_ibss(dev, ifsta); if (ifsta->flags & IEEE80211_STA_CREATE_IBSS) { - printk(KERN_DEBUG "%s: IBSS not allowed on the" - " configured channel %d (%d MHz)\n", - dev->name, local->hw.conf.channel, - local->hw.conf.freq); + printk(KERN_DEBUG "%s: IBSS not allowed on" + " %d MHz\n", dev->name, + local->hw.conf.channel->center_freq); } /* No IBSS found - decrease scan interval and continue @@ -3018,41 +3605,12 @@ static int ieee80211_sta_find_ibss(struct net_device *dev, int ieee80211_sta_set_ssid(struct net_device *dev, char *ssid, size_t len) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_if_sta *ifsta; - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); if (len > IEEE80211_MAX_SSID_LEN) return -EINVAL; - /* TODO: This should always be done for IBSS, even if IEEE80211_QOS is - * not defined. */ - if (local->ops->conf_tx) { - struct ieee80211_tx_queue_params qparam; - int i; - - memset(&qparam, 0, sizeof(qparam)); - /* TODO: are these ok defaults for all hw_modes? */ - qparam.aifs = 2; - qparam.cw_min = - local->hw.conf.phymode == MODE_IEEE80211B ? 31 : 15; - qparam.cw_max = 1023; - qparam.burst_time = 0; - for (i = IEEE80211_TX_QUEUE_DATA0; i < NUM_TX_DATA_QUEUES; i++) - { - local->ops->conf_tx(local_to_hw(local), - i + IEEE80211_TX_QUEUE_DATA0, - &qparam); - } - /* IBSS uses different parameters for Beacon sending */ - qparam.cw_min++; - qparam.cw_min *= 2; - qparam.cw_min--; - local->ops->conf_tx(local_to_hw(local), - IEEE80211_TX_QUEUE_BEACON, &qparam); - } - - sdata = IEEE80211_DEV_TO_SUB_IF(dev); ifsta = &sdata->u.sta; if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) @@ -3144,6 +3702,13 @@ static void ieee80211_send_nullfunc(struct ieee80211_local *local, } +static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) +{ + if (sdata->vif.type == IEEE80211_IF_TYPE_STA || + ieee80211_vif_is_mesh(&sdata->vif)) + ieee80211_sta_timer((unsigned long)sdata); +} + void ieee80211_scan_completed(struct ieee80211_hw *hw) { struct ieee80211_local *local = hw_to_local(hw); @@ -3157,6 +3722,15 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw) if (local->sta_hw_scanning) { local->sta_hw_scanning = 0; + if (ieee80211_hw_config(local)) + printk(KERN_DEBUG "%s: failed to restore operational " + "channel after scan\n", dev->name); + /* Restart STA timer for HW scan case */ + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) + ieee80211_restart_sta_timer(sdata); + rcu_read_unlock(); + goto done; } @@ -3183,11 +3757,12 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw) if (sdata->dev == local->mdev) continue; - if (sdata->vif.type == IEEE80211_IF_TYPE_STA) { - if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) - ieee80211_send_nullfunc(local, sdata, 0); - ieee80211_sta_timer((unsigned long)sdata); - } + /* Tell AP we're back */ + if (sdata->vif.type == IEEE80211_IF_TYPE_STA && + sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) + ieee80211_send_nullfunc(local, sdata, 0); + + ieee80211_restart_sta_timer(sdata); netif_wake_queue(sdata->dev); } @@ -3211,7 +3786,7 @@ void ieee80211_sta_scan_work(struct work_struct *work) container_of(work, struct ieee80211_local, scan_work.work); struct net_device *dev = local->scan_dev; struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - struct ieee80211_hw_mode *mode; + struct ieee80211_supported_band *sband; struct ieee80211_channel *chan; int skip; unsigned long next_delay = 0; @@ -3221,44 +3796,59 @@ void ieee80211_sta_scan_work(struct work_struct *work) switch (local->scan_state) { case SCAN_SET_CHANNEL: - mode = local->scan_hw_mode; - if (local->scan_hw_mode->list.next == &local->modes_list && - local->scan_channel_idx >= mode->num_channels) { + /* + * Get current scan band. scan_band may be IEEE80211_NUM_BANDS + * after we successfully scanned the last channel of the last + * band (and the last band is supported by the hw) + */ + if (local->scan_band < IEEE80211_NUM_BANDS) + sband = local->hw.wiphy->bands[local->scan_band]; + else + sband = NULL; + + /* + * If we are at an unsupported band and have more bands + * left to scan, advance to the next supported one. + */ + while (!sband && local->scan_band < IEEE80211_NUM_BANDS - 1) { + local->scan_band++; + sband = local->hw.wiphy->bands[local->scan_band]; + local->scan_channel_idx = 0; + } + + /* if no more bands/channels left, complete scan */ + if (!sband || local->scan_channel_idx >= sband->n_channels) { ieee80211_scan_completed(local_to_hw(local)); return; } - skip = !(local->enabled_modes & (1 << mode->mode)); - chan = &mode->channels[local->scan_channel_idx]; - if (!(chan->flag & IEEE80211_CHAN_W_SCAN) || + skip = 0; + chan = &sband->channels[local->scan_channel_idx]; + + if (chan->flags & IEEE80211_CHAN_DISABLED || (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && - !(chan->flag & IEEE80211_CHAN_W_IBSS)) || - (local->hw_modes & local->enabled_modes & - (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B)) + chan->flags & IEEE80211_CHAN_NO_IBSS)) skip = 1; if (!skip) { -#if 0 - printk(KERN_DEBUG "%s: scan channel %d (%d MHz)\n", - dev->name, chan->chan, chan->freq); -#endif - local->scan_channel = chan; if (ieee80211_hw_config(local)) { - printk(KERN_DEBUG "%s: failed to set channel " - "%d (%d MHz) for scan\n", dev->name, - chan->chan, chan->freq); + printk(KERN_DEBUG "%s: failed to set freq to " + "%d MHz for scan\n", dev->name, + chan->center_freq); skip = 1; } } + /* advance state machine to next channel/band */ local->scan_channel_idx++; - if (local->scan_channel_idx >= local->scan_hw_mode->num_channels) { - if (local->scan_hw_mode->list.next != &local->modes_list) { - local->scan_hw_mode = list_entry(local->scan_hw_mode->list.next, - struct ieee80211_hw_mode, - list); - local->scan_channel_idx = 0; - } + if (local->scan_channel_idx >= sband->n_channels) { + /* + * scan_band may end up == IEEE80211_NUM_BANDS, but + * we'll catch that case above and complete the scan + * if that is the case. + */ + local->scan_band++; + local->scan_channel_idx = 0; } if (skip) @@ -3269,13 +3859,14 @@ void ieee80211_sta_scan_work(struct work_struct *work) local->scan_state = SCAN_SEND_PROBE; break; case SCAN_SEND_PROBE: - if (local->scan_channel->flag & IEEE80211_CHAN_W_ACTIVE_SCAN) { - ieee80211_send_probe_req(dev, NULL, local->scan_ssid, - local->scan_ssid_len); - next_delay = IEEE80211_CHANNEL_TIME; - } else - next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; + next_delay = IEEE80211_PASSIVE_CHANNEL_TIME; local->scan_state = SCAN_SET_CHANNEL; + + if (local->scan_channel->flags & IEEE80211_CHAN_PASSIVE_SCAN) + break; + ieee80211_send_probe_req(dev, NULL, local->scan_ssid, + local->scan_ssid_len); + next_delay = IEEE80211_CHANNEL_TIME; break; } @@ -3350,10 +3941,8 @@ static int ieee80211_sta_start_scan(struct net_device *dev, } else local->scan_ssid_len = 0; local->scan_state = SCAN_SET_CHANNEL; - local->scan_hw_mode = list_entry(local->modes_list.next, - struct ieee80211_hw_mode, - list); local->scan_channel_idx = 0; + local->scan_band = IEEE80211_BAND_2GHZ; local->scan_dev = dev; netif_tx_lock_bh(local->mdev); @@ -3408,9 +3997,6 @@ ieee80211_sta_scan_result(struct net_device *dev, bss->last_update + IEEE80211_SCAN_RESULT_EXPIRE)) return current_ev; - if (!(local->enabled_modes & (1 << bss->hw_mode))) - return current_ev; - memset(&iwe, 0, sizeof(iwe)); iwe.cmd = SIOCGIWAP; iwe.u.ap_addr.sa_family = ARPHRD_ETHER; @@ -3420,15 +4006,25 @@ ieee80211_sta_scan_result(struct net_device *dev, memset(&iwe, 0, sizeof(iwe)); iwe.cmd = SIOCGIWESSID; - iwe.u.data.length = bss->ssid_len; - iwe.u.data.flags = 1; - current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, - bss->ssid); + if (bss_mesh_cfg(bss)) { + iwe.u.data.length = bss_mesh_id_len(bss); + iwe.u.data.flags = 1; + current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, + bss_mesh_id(bss)); + } else { + iwe.u.data.length = bss->ssid_len; + iwe.u.data.flags = 1; + current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, + bss->ssid); + } - if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) { + if (bss->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS) + || bss_mesh_cfg(bss)) { memset(&iwe, 0, sizeof(iwe)); iwe.cmd = SIOCGIWMODE; - if (bss->capability & WLAN_CAPABILITY_ESS) + if (bss_mesh_cfg(bss)) + iwe.u.mode = IW_MODE_MESH; + else if (bss->capability & WLAN_CAPABILITY_ESS) iwe.u.mode = IW_MODE_MASTER; else iwe.u.mode = IW_MODE_ADHOC; @@ -3438,12 +4034,15 @@ ieee80211_sta_scan_result(struct net_device *dev, memset(&iwe, 0, sizeof(iwe)); iwe.cmd = SIOCGIWFREQ; - iwe.u.freq.m = bss->channel; - iwe.u.freq.e = 0; + iwe.u.freq.m = bss->freq; + iwe.u.freq.e = 6; current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN); - iwe.u.freq.m = bss->freq * 100000; - iwe.u.freq.e = 1; + + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = SIOCGIWFREQ; + iwe.u.freq.m = ieee80211_frequency_to_channel(bss->freq); + iwe.u.freq.e = 0; current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN); @@ -3514,6 +4113,45 @@ ieee80211_sta_scan_result(struct net_device *dev, } } + if (bss_mesh_cfg(bss)) { + char *buf; + u8 *cfg = bss_mesh_cfg(bss); + buf = kmalloc(50, GFP_ATOMIC); + if (buf) { + memset(&iwe, 0, sizeof(iwe)); + iwe.cmd = IWEVCUSTOM; + sprintf(buf, "Mesh network (version %d)", cfg[0]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(current_ev, end_buf, + &iwe, buf); + sprintf(buf, "Path Selection Protocol ID: " + "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], + cfg[4]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(current_ev, end_buf, + &iwe, buf); + sprintf(buf, "Path Selection Metric ID: " + "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], + cfg[8]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(current_ev, end_buf, + &iwe, buf); + sprintf(buf, "Congestion Control Mode ID: " + "0x%02X%02X%02X%02X", cfg[9], cfg[10], + cfg[11], cfg[12]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(current_ev, end_buf, + &iwe, buf); + sprintf(buf, "Channel Precedence: " + "0x%02X%02X%02X%02X", cfg[13], cfg[14], + cfg[15], cfg[16]); + iwe.u.data.length = strlen(buf); + current_ev = iwe_stream_add_point(current_ev, end_buf, + &iwe, buf); + kfree(buf); + } + } + return current_ev; } @@ -3582,15 +4220,21 @@ struct sta_info * ieee80211_ibss_add_sta(struct net_device *dev, printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n", wiphy_name(local->hw.wiphy), print_mac(mac, addr), dev->name); - sta = sta_info_add(local, dev, addr, GFP_ATOMIC); + sta = sta_info_alloc(sdata, addr, GFP_ATOMIC); if (!sta) return NULL; - sta->supp_rates = sdata->u.sta.supp_rates_bits; + sta->flags |= WLAN_STA_AUTHORIZED; + + sta->supp_rates[local->hw.conf.channel->band] = + sdata->u.sta.supp_rates_bits[local->hw.conf.channel->band]; rate_control_rate_init(sta, local); - return sta; /* caller will call sta_info_put() */ + if (sta_info_insert(sta)) + return NULL; + + return sta; } @@ -3630,3 +4274,26 @@ int ieee80211_sta_disassociate(struct net_device *dev, u16 reason) ieee80211_set_disassoc(dev, ifsta, 0); return 0; } + +void ieee80211_notify_mac(struct ieee80211_hw *hw, + enum ieee80211_notification_types notif_type) +{ + struct ieee80211_local *local = hw_to_local(hw); + struct ieee80211_sub_if_data *sdata; + + switch (notif_type) { + case IEEE80211_NOTIFY_RE_ASSOC: + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) { + + if (sdata->vif.type == IEEE80211_IF_TYPE_STA) { + ieee80211_sta_req_auth(sdata->dev, + &sdata->u.sta); + } + + } + rcu_read_unlock(); + break; + } +} +EXPORT_SYMBOL(ieee80211_notify_mac); diff --git a/net/mac80211/ieee80211_rate.c b/net/mac80211/rate.c index b957e67..841df93 100644 --- a/net/mac80211/ieee80211_rate.c +++ b/net/mac80211/rate.c @@ -10,7 +10,7 @@ #include <linux/kernel.h> #include <linux/rtnetlink.h> -#include "ieee80211_rate.h" +#include "rate.h" #include "ieee80211_i.h" struct rate_control_alg { @@ -163,34 +163,37 @@ static void rate_control_release(struct kref *kref) } void rate_control_get_rate(struct net_device *dev, - struct ieee80211_hw_mode *mode, struct sk_buff *skb, + struct ieee80211_supported_band *sband, + struct sk_buff *skb, struct rate_selection *sel) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct rate_control_ref *ref = local->rate_ctrl; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - struct sta_info *sta = sta_info_get(local, hdr->addr1); + struct sta_info *sta; int i; + rcu_read_lock(); + sta = sta_info_get(local, hdr->addr1); + memset(sel, 0, sizeof(struct rate_selection)); - ref->ops->get_rate(ref->priv, dev, mode, skb, sel); + ref->ops->get_rate(ref->priv, dev, sband, skb, sel); /* Select a non-ERP backup rate. */ if (!sel->nonerp) { - for (i = 0; i < mode->num_rates - 1; i++) { - struct ieee80211_rate *rate = &mode->rates[i]; - if (sel->rate->rate < rate->rate) + for (i = 0; i < sband->n_bitrates; i++) { + struct ieee80211_rate *rate = &sband->bitrates[i]; + if (sel->rate->bitrate < rate->bitrate) break; - if (rate_supported(sta, mode, i) && - !(rate->flags & IEEE80211_RATE_ERP)) + if (rate_supported(sta, sband->band, i) && + !(rate->flags & IEEE80211_RATE_ERP_G)) sel->nonerp = rate; } } - if (sta) - sta_info_put(sta); + rcu_read_unlock(); } struct rate_control_ref *rate_control_get(struct rate_control_ref *ref) diff --git a/net/mac80211/ieee80211_rate.h b/net/mac80211/rate.h index 73f19e8..5b45f33 100644 --- a/net/mac80211/ieee80211_rate.h +++ b/net/mac80211/rate.h @@ -14,10 +14,12 @@ #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/types.h> +#include <linux/kref.h> #include <net/mac80211.h> #include "ieee80211_i.h" #include "sta_info.h" +/* TODO: kdoc */ struct rate_selection { /* Selected transmission rate */ struct ieee80211_rate *rate; @@ -34,7 +36,8 @@ struct rate_control_ops { struct sk_buff *skb, struct ieee80211_tx_status *status); void (*get_rate)(void *priv, struct net_device *dev, - struct ieee80211_hw_mode *mode, struct sk_buff *skb, + struct ieee80211_supported_band *band, + struct sk_buff *skb, struct rate_selection *sel); void (*rate_init)(void *priv, void *priv_sta, struct ieee80211_local *local, struct sta_info *sta); @@ -66,7 +69,8 @@ void ieee80211_rate_control_unregister(struct rate_control_ops *ops); struct rate_control_ref *rate_control_alloc(const char *name, struct ieee80211_local *local); void rate_control_get_rate(struct net_device *dev, - struct ieee80211_hw_mode *mode, struct sk_buff *skb, + struct ieee80211_supported_band *sband, + struct sk_buff *skb, struct rate_selection *sel); struct rate_control_ref *rate_control_get(struct rate_control_ref *ref); void rate_control_put(struct rate_control_ref *ref); @@ -127,23 +131,23 @@ static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) #endif } -static inline int -rate_supported(struct sta_info *sta, struct ieee80211_hw_mode *mode, int index) +static inline int rate_supported(struct sta_info *sta, + enum ieee80211_band band, + int index) { - return (sta == NULL || sta->supp_rates & BIT(index)) && - (mode->rates[index].flags & IEEE80211_RATE_SUPPORTED); + return (sta == NULL || sta->supp_rates[band] & BIT(index)); } static inline int -rate_lowest_index(struct ieee80211_local *local, struct ieee80211_hw_mode *mode, +rate_lowest_index(struct ieee80211_local *local, + struct ieee80211_supported_band *sband, struct sta_info *sta) { int i; - for (i = 0; i < mode->num_rates; i++) { - if (rate_supported(sta, mode, i)) + for (i = 0; i < sband->n_bitrates; i++) + if (rate_supported(sta, sband->band, i)) return i; - } /* warn when we cannot find a rate. */ WARN_ON(1); @@ -152,10 +156,11 @@ rate_lowest_index(struct ieee80211_local *local, struct ieee80211_hw_mode *mode, } static inline struct ieee80211_rate * -rate_lowest(struct ieee80211_local *local, struct ieee80211_hw_mode *mode, +rate_lowest(struct ieee80211_local *local, + struct ieee80211_supported_band *sband, struct sta_info *sta) { - return &mode->rates[rate_lowest_index(local, mode, sta)]; + return &sband->bitrates[rate_lowest_index(local, sband, sta)]; } @@ -166,21 +171,6 @@ void rate_control_deinitialize(struct ieee80211_local *local); /* Rate control algorithms */ -#if defined(RC80211_SIMPLE_COMPILE) || \ - (defined(CONFIG_MAC80211_RC_SIMPLE) && \ - !defined(CONFIG_MAC80211_RC_SIMPLE_MODULE)) -extern int rc80211_simple_init(void); -extern void rc80211_simple_exit(void); -#else -static inline int rc80211_simple_init(void) -{ - return 0; -} -static inline void rc80211_simple_exit(void) -{ -} -#endif - #if defined(RC80211_PID_COMPILE) || \ (defined(CONFIG_MAC80211_RC_PID) && \ !defined(CONFIG_MAC80211_RC_PID_MODULE)) diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c index 3b77410..a849b74 100644 --- a/net/mac80211/rc80211_pid_algo.c +++ b/net/mac80211/rc80211_pid_algo.c @@ -14,8 +14,8 @@ #include <linux/skbuff.h> #include <linux/debugfs.h> #include <net/mac80211.h> -#include "ieee80211_rate.h" - +#include "rate.h" +#include "mesh.h" #include "rc80211_pid.h" @@ -63,6 +63,7 @@ * RC_PID_ARITH_SHIFT. */ + /* Adjust the rate while ensuring that we won't switch to a lower rate if it * exhibited a worse failed frames behaviour and we'll choose the highest rate * whose failed frames behaviour is not worse than the one of the original rate @@ -72,14 +73,14 @@ static void rate_control_pid_adjust_rate(struct ieee80211_local *local, struct rc_pid_rateinfo *rinfo) { struct ieee80211_sub_if_data *sdata; - struct ieee80211_hw_mode *mode; - int cur_sorted, new_sorted, probe, tmp, n_bitrates; - int cur = sta->txrate; - - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); + struct ieee80211_supported_band *sband; + int cur_sorted, new_sorted, probe, tmp, n_bitrates, band; + int cur = sta->txrate_idx; - mode = local->oper_hw_mode; - n_bitrates = mode->num_rates; + sdata = sta->sdata; + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + band = sband->band; + n_bitrates = sband->n_bitrates; /* Map passed arguments to sorted values. */ cur_sorted = rinfo[cur].rev_index; @@ -97,20 +98,20 @@ static void rate_control_pid_adjust_rate(struct ieee80211_local *local, /* Ensure that the rate decrease isn't disadvantageous. */ for (probe = cur_sorted; probe >= new_sorted; probe--) if (rinfo[probe].diff <= rinfo[cur_sorted].diff && - rate_supported(sta, mode, rinfo[probe].index)) + rate_supported(sta, band, rinfo[probe].index)) tmp = probe; } else { /* Look for rate increase with zero (or below) cost. */ for (probe = new_sorted + 1; probe < n_bitrates; probe++) if (rinfo[probe].diff <= rinfo[new_sorted].diff && - rate_supported(sta, mode, rinfo[probe].index)) + rate_supported(sta, band, rinfo[probe].index)) tmp = probe; } /* Fit the rate found to the nearest supported rate. */ do { - if (rate_supported(sta, mode, rinfo[tmp].index)) { - sta->txrate = rinfo[tmp].index; + if (rate_supported(sta, band, rinfo[tmp].index)) { + sta->txrate_idx = rinfo[tmp].index; break; } if (adj < 0) @@ -122,7 +123,7 @@ static void rate_control_pid_adjust_rate(struct ieee80211_local *local, #ifdef CONFIG_MAC80211_DEBUGFS rate_control_pid_event_rate_change( &((struct rc_pid_sta_info *)sta->rate_ctrl_priv)->events, - cur, mode->rates[cur].rate); + sta->txrate_idx, sband->bitrates[sta->txrate_idx].bitrate); #endif } @@ -147,9 +148,12 @@ static void rate_control_pid_sample(struct rc_pid_info *pinfo, struct ieee80211_local *local, struct sta_info *sta) { +#ifdef CONFIG_MAC80211_MESH + struct ieee80211_sub_if_data *sdata = sta->sdata; +#endif struct rc_pid_sta_info *spinfo = sta->rate_ctrl_priv; struct rc_pid_rateinfo *rinfo = pinfo->rinfo; - struct ieee80211_hw_mode *mode; + struct ieee80211_supported_band *sband; u32 pf; s32 err_avg; u32 err_prop; @@ -158,7 +162,7 @@ static void rate_control_pid_sample(struct rc_pid_info *pinfo, int adj, i, j, tmp; unsigned long period; - mode = local->oper_hw_mode; + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; spinfo = sta->rate_ctrl_priv; /* In case nothing happened during the previous control interval, turn @@ -177,25 +181,32 @@ static void rate_control_pid_sample(struct rc_pid_info *pinfo, pf = spinfo->last_pf; else { pf = spinfo->tx_num_failed * 100 / spinfo->tx_num_xmit; +#ifdef CONFIG_MAC80211_MESH + if (pf == 100 && + sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) + mesh_plink_broken(sta); +#endif pf <<= RC_PID_ARITH_SHIFT; + sta->fail_avg = ((pf + (spinfo->last_pf << 3)) / 9) + >> RC_PID_ARITH_SHIFT; } spinfo->tx_num_xmit = 0; spinfo->tx_num_failed = 0; /* If we just switched rate, update the rate behaviour info. */ - if (pinfo->oldrate != sta->txrate) { + if (pinfo->oldrate != sta->txrate_idx) { i = rinfo[pinfo->oldrate].rev_index; - j = rinfo[sta->txrate].rev_index; + j = rinfo[sta->txrate_idx].rev_index; tmp = (pf - spinfo->last_pf); tmp = RC_PID_DO_ARITH_RIGHT_SHIFT(tmp, RC_PID_ARITH_SHIFT); rinfo[j].diff = rinfo[i].diff + tmp; - pinfo->oldrate = sta->txrate; + pinfo->oldrate = sta->txrate_idx; } - rate_control_pid_normalize(pinfo, mode->num_rates); + rate_control_pid_normalize(pinfo, sband->n_bitrates); /* Compute the proportional, integral and derivative errors. */ err_prop = (pinfo->target << RC_PID_ARITH_SHIFT) - pf; @@ -236,23 +247,27 @@ static void rate_control_pid_tx_status(void *priv, struct net_device *dev, struct sta_info *sta; struct rc_pid_sta_info *spinfo; unsigned long period; + struct ieee80211_supported_band *sband; + + rcu_read_lock(); sta = sta_info_get(local, hdr->addr1); + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; if (!sta) - return; + goto unlock; /* Don't update the state if we're not controlling the rate. */ - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); + sdata = sta->sdata; if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) { - sta->txrate = sdata->bss->max_ratectrl_rateidx; - return; + sta->txrate_idx = sdata->bss->max_ratectrl_rateidx; + goto unlock; } /* Ignore all frames that were sent with a different rate than the rate * we currently advise mac80211 to use. */ - if (status->control.rate != &local->oper_hw_mode->rates[sta->txrate]) - goto ignore; + if (status->control.tx_rate != &sband->bitrates[sta->txrate_idx]) + goto unlock; spinfo = sta->rate_ctrl_priv; spinfo->tx_num_xmit++; @@ -277,9 +292,6 @@ static void rate_control_pid_tx_status(void *priv, struct net_device *dev, sta->tx_num_consecutive_failures++; sta->tx_num_mpdu_fail++; } else { - sta->last_ack_rssi[0] = sta->last_ack_rssi[1]; - sta->last_ack_rssi[1] = sta->last_ack_rssi[2]; - sta->last_ack_rssi[2] = status->ack_signal; sta->tx_num_consecutive_failures = 0; sta->tx_num_mpdu_ok++; } @@ -293,12 +305,12 @@ static void rate_control_pid_tx_status(void *priv, struct net_device *dev, if (time_after(jiffies, spinfo->last_sample + period)) rate_control_pid_sample(pinfo, local, sta); -ignore: - sta_info_put(sta); + unlock: + rcu_read_unlock(); } static void rate_control_pid_get_rate(void *priv, struct net_device *dev, - struct ieee80211_hw_mode *mode, + struct ieee80211_supported_band *sband, struct sk_buff *skb, struct rate_selection *sel) { @@ -309,6 +321,8 @@ static void rate_control_pid_get_rate(void *priv, struct net_device *dev, int rateidx; u16 fc; + rcu_read_lock(); + sta = sta_info_get(local, hdr->addr1); /* Send management frames and broadcast/multicast data using lowest @@ -316,32 +330,31 @@ static void rate_control_pid_get_rate(void *priv, struct net_device *dev, fc = le16_to_cpu(hdr->frame_control); if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA || is_multicast_ether_addr(hdr->addr1) || !sta) { - sel->rate = rate_lowest(local, mode, sta); - if (sta) - sta_info_put(sta); + sel->rate = rate_lowest(local, sband, sta); + rcu_read_unlock(); return; } /* If a forced rate is in effect, select it. */ sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) - sta->txrate = sdata->bss->force_unicast_rateidx; + sta->txrate_idx = sdata->bss->force_unicast_rateidx; - rateidx = sta->txrate; + rateidx = sta->txrate_idx; - if (rateidx >= mode->num_rates) - rateidx = mode->num_rates - 1; + if (rateidx >= sband->n_bitrates) + rateidx = sband->n_bitrates - 1; - sta->last_txrate = rateidx; + sta->last_txrate_idx = rateidx; - sta_info_put(sta); + rcu_read_unlock(); - sel->rate = &mode->rates[rateidx]; + sel->rate = &sband->bitrates[rateidx]; #ifdef CONFIG_MAC80211_DEBUGFS rate_control_pid_event_tx_rate( &((struct rc_pid_sta_info *) sta->rate_ctrl_priv)->events, - rateidx, mode->rates[rateidx].rate); + rateidx, sband->bitrates[rateidx].bitrate); #endif } @@ -353,28 +366,33 @@ static void rate_control_pid_rate_init(void *priv, void *priv_sta, * as we need to have IEEE 802.1X auth succeed immediately after assoc.. * Until that method is implemented, we will use the lowest supported * rate as a workaround. */ - sta->txrate = rate_lowest_index(local, local->oper_hw_mode, sta); + struct ieee80211_supported_band *sband; + + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + sta->txrate_idx = rate_lowest_index(local, sband, sta); + sta->fail_avg = 0; } static void *rate_control_pid_alloc(struct ieee80211_local *local) { struct rc_pid_info *pinfo; struct rc_pid_rateinfo *rinfo; - struct ieee80211_hw_mode *mode; + struct ieee80211_supported_band *sband; int i, j, tmp; bool s; #ifdef CONFIG_MAC80211_DEBUGFS struct rc_pid_debugfs_entries *de; #endif + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + pinfo = kmalloc(sizeof(*pinfo), GFP_ATOMIC); if (!pinfo) return NULL; - /* We can safely assume that oper_hw_mode won't change unless we get + /* We can safely assume that sband won't change unless we get * reinitialized. */ - mode = local->oper_hw_mode; - rinfo = kmalloc(sizeof(*rinfo) * mode->num_rates, GFP_ATOMIC); + rinfo = kmalloc(sizeof(*rinfo) * sband->n_bitrates, GFP_ATOMIC); if (!rinfo) { kfree(pinfo); return NULL; @@ -383,7 +401,7 @@ static void *rate_control_pid_alloc(struct ieee80211_local *local) /* Sort the rates. This is optimized for the most common case (i.e. * almost-sorted CCK+OFDM rates). Kind of bubble-sort with reversed * mapping too. */ - for (i = 0; i < mode->num_rates; i++) { + for (i = 0; i < sband->n_bitrates; i++) { rinfo[i].index = i; rinfo[i].rev_index = i; if (pinfo->fast_start) @@ -391,11 +409,11 @@ static void *rate_control_pid_alloc(struct ieee80211_local *local) else rinfo[i].diff = i * pinfo->norm_offset; } - for (i = 1; i < mode->num_rates; i++) { + for (i = 1; i < sband->n_bitrates; i++) { s = 0; - for (j = 0; j < mode->num_rates - i; j++) - if (unlikely(mode->rates[rinfo[j].index].rate > - mode->rates[rinfo[j + 1].index].rate)) { + for (j = 0; j < sband->n_bitrates - i; j++) + if (unlikely(sband->bitrates[rinfo[j].index].bitrate > + sband->bitrates[rinfo[j + 1].index].bitrate)) { tmp = rinfo[j].index; rinfo[j].index = rinfo[j + 1].index; rinfo[j + 1].index = tmp; diff --git a/net/mac80211/rc80211_pid_debugfs.c b/net/mac80211/rc80211_pid_debugfs.c index 88b8dc9..ae75d41 100644 --- a/net/mac80211/rc80211_pid_debugfs.c +++ b/net/mac80211/rc80211_pid_debugfs.c @@ -13,7 +13,7 @@ #include <linux/skbuff.h> #include <net/mac80211.h> -#include "ieee80211_rate.h" +#include "rate.h" #include "rc80211_pid.h" diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c deleted file mode 100644 index 9a78b11..0000000 --- a/net/mac80211/rc80211_simple.c +++ /dev/null @@ -1,400 +0,0 @@ -/* - * Copyright 2002-2005, Instant802 Networks, Inc. - * Copyright 2005, Devicescape Software, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/init.h> -#include <linux/netdevice.h> -#include <linux/types.h> -#include <linux/slab.h> -#include <linux/skbuff.h> -#include <linux/compiler.h> -#include <linux/module.h> - -#include <net/mac80211.h> -#include "ieee80211_i.h" -#include "ieee80211_rate.h" -#include "debugfs.h" - - -/* This is a minimal implementation of TX rate controlling that can be used - * as the default when no improved mechanisms are available. */ - -#define RATE_CONTROL_NUM_DOWN 20 -#define RATE_CONTROL_NUM_UP 15 - -#define RATE_CONTROL_EMERG_DEC 2 -#define RATE_CONTROL_INTERVAL (HZ / 20) -#define RATE_CONTROL_MIN_TX 10 - -static void rate_control_rate_inc(struct ieee80211_local *local, - struct sta_info *sta) -{ - struct ieee80211_sub_if_data *sdata; - struct ieee80211_hw_mode *mode; - int i = sta->txrate; - int maxrate; - - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); - if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) { - /* forced unicast rate - do not change STA rate */ - return; - } - - mode = local->oper_hw_mode; - maxrate = sdata->bss ? sdata->bss->max_ratectrl_rateidx : -1; - - if (i > mode->num_rates) - i = mode->num_rates - 2; - - while (i + 1 < mode->num_rates) { - i++; - if (sta->supp_rates & BIT(i) && - mode->rates[i].flags & IEEE80211_RATE_SUPPORTED && - (maxrate < 0 || i <= maxrate)) { - sta->txrate = i; - break; - } - } -} - - -static void rate_control_rate_dec(struct ieee80211_local *local, - struct sta_info *sta) -{ - struct ieee80211_sub_if_data *sdata; - struct ieee80211_hw_mode *mode; - int i = sta->txrate; - - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); - if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) { - /* forced unicast rate - do not change STA rate */ - return; - } - - mode = local->oper_hw_mode; - if (i > mode->num_rates) - i = mode->num_rates; - - while (i > 0) { - i--; - if (sta->supp_rates & BIT(i) && - mode->rates[i].flags & IEEE80211_RATE_SUPPORTED) { - sta->txrate = i; - break; - } - } -} - -struct global_rate_control { - int dummy; -}; - -struct sta_rate_control { - unsigned long last_rate_change; - u32 tx_num_failures; - u32 tx_num_xmit; - - unsigned long avg_rate_update; - u32 tx_avg_rate_sum; - u32 tx_avg_rate_num; - -#ifdef CONFIG_MAC80211_DEBUGFS - struct dentry *tx_avg_rate_sum_dentry; - struct dentry *tx_avg_rate_num_dentry; -#endif -}; - - -static void rate_control_simple_tx_status(void *priv, struct net_device *dev, - struct sk_buff *skb, - struct ieee80211_tx_status *status) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - struct sta_info *sta; - struct sta_rate_control *srctrl; - - sta = sta_info_get(local, hdr->addr1); - - if (!sta) - return; - - srctrl = sta->rate_ctrl_priv; - srctrl->tx_num_xmit++; - if (status->excessive_retries) { - srctrl->tx_num_failures++; - sta->tx_retry_failed++; - sta->tx_num_consecutive_failures++; - sta->tx_num_mpdu_fail++; - } else { - sta->last_ack_rssi[0] = sta->last_ack_rssi[1]; - sta->last_ack_rssi[1] = sta->last_ack_rssi[2]; - sta->last_ack_rssi[2] = status->ack_signal; - sta->tx_num_consecutive_failures = 0; - sta->tx_num_mpdu_ok++; - } - sta->tx_retry_count += status->retry_count; - sta->tx_num_mpdu_fail += status->retry_count; - - if (time_after(jiffies, - srctrl->last_rate_change + RATE_CONTROL_INTERVAL) && - srctrl->tx_num_xmit > RATE_CONTROL_MIN_TX) { - u32 per_failed; - srctrl->last_rate_change = jiffies; - - per_failed = (100 * sta->tx_num_mpdu_fail) / - (sta->tx_num_mpdu_fail + sta->tx_num_mpdu_ok); - /* TODO: calculate average per_failed to make adjusting - * parameters easier */ -#if 0 - if (net_ratelimit()) { - printk(KERN_DEBUG "MPDU fail=%d ok=%d per_failed=%d\n", - sta->tx_num_mpdu_fail, sta->tx_num_mpdu_ok, - per_failed); - } -#endif - - /* - * XXX: Make these configurable once we have an - * interface to the rate control algorithms - */ - if (per_failed > RATE_CONTROL_NUM_DOWN) { - rate_control_rate_dec(local, sta); - } else if (per_failed < RATE_CONTROL_NUM_UP) { - rate_control_rate_inc(local, sta); - } - srctrl->tx_avg_rate_sum += status->control.rate->rate; - srctrl->tx_avg_rate_num++; - srctrl->tx_num_failures = 0; - srctrl->tx_num_xmit = 0; - } else if (sta->tx_num_consecutive_failures >= - RATE_CONTROL_EMERG_DEC) { - rate_control_rate_dec(local, sta); - } - - if (srctrl->avg_rate_update + 60 * HZ < jiffies) { - srctrl->avg_rate_update = jiffies; - if (srctrl->tx_avg_rate_num > 0) { -#ifdef CONFIG_MAC80211_VERBOSE_DEBUG - DECLARE_MAC_BUF(mac); - printk(KERN_DEBUG "%s: STA %s Average rate: " - "%d (%d/%d)\n", - dev->name, print_mac(mac, sta->addr), - srctrl->tx_avg_rate_sum / - srctrl->tx_avg_rate_num, - srctrl->tx_avg_rate_sum, - srctrl->tx_avg_rate_num); -#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ - srctrl->tx_avg_rate_sum = 0; - srctrl->tx_avg_rate_num = 0; - } - } - - sta_info_put(sta); -} - - -static void -rate_control_simple_get_rate(void *priv, struct net_device *dev, - struct ieee80211_hw_mode *mode, - struct sk_buff *skb, - struct rate_selection *sel) -{ - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - struct ieee80211_sub_if_data *sdata; - struct sta_info *sta; - int rateidx; - u16 fc; - - sta = sta_info_get(local, hdr->addr1); - - /* Send management frames and broadcast/multicast data using lowest - * rate. */ - fc = le16_to_cpu(hdr->frame_control); - if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA || - is_multicast_ether_addr(hdr->addr1) || !sta) { - sel->rate = rate_lowest(local, mode, sta); - if (sta) - sta_info_put(sta); - return; - } - - /* If a forced rate is in effect, select it. */ - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (sdata->bss && sdata->bss->force_unicast_rateidx > -1) - sta->txrate = sdata->bss->force_unicast_rateidx; - - rateidx = sta->txrate; - - if (rateidx >= mode->num_rates) - rateidx = mode->num_rates - 1; - - sta->last_txrate = rateidx; - - sta_info_put(sta); - - sel->rate = &mode->rates[rateidx]; -} - - -static void rate_control_simple_rate_init(void *priv, void *priv_sta, - struct ieee80211_local *local, - struct sta_info *sta) -{ - struct ieee80211_hw_mode *mode; - int i; - sta->txrate = 0; - mode = local->oper_hw_mode; - /* TODO: This routine should consider using RSSI from previous packets - * as we need to have IEEE 802.1X auth succeed immediately after assoc.. - * Until that method is implemented, we will use the lowest supported rate - * as a workaround, */ - for (i = 0; i < mode->num_rates; i++) { - if ((sta->supp_rates & BIT(i)) && - (mode->rates[i].flags & IEEE80211_RATE_SUPPORTED)) { - sta->txrate = i; - break; - } - } -} - - -static void * rate_control_simple_alloc(struct ieee80211_local *local) -{ - struct global_rate_control *rctrl; - - rctrl = kzalloc(sizeof(*rctrl), GFP_ATOMIC); - - return rctrl; -} - - -static void rate_control_simple_free(void *priv) -{ - struct global_rate_control *rctrl = priv; - kfree(rctrl); -} - - -static void rate_control_simple_clear(void *priv) -{ -} - - -static void * rate_control_simple_alloc_sta(void *priv, gfp_t gfp) -{ - struct sta_rate_control *rctrl; - - rctrl = kzalloc(sizeof(*rctrl), gfp); - - return rctrl; -} - - -static void rate_control_simple_free_sta(void *priv, void *priv_sta) -{ - struct sta_rate_control *rctrl = priv_sta; - kfree(rctrl); -} - -#ifdef CONFIG_MAC80211_DEBUGFS - -static int open_file_generic(struct inode *inode, struct file *file) -{ - file->private_data = inode->i_private; - return 0; -} - -static ssize_t sta_tx_avg_rate_sum_read(struct file *file, - char __user *userbuf, - size_t count, loff_t *ppos) -{ - struct sta_rate_control *srctrl = file->private_data; - char buf[20]; - - sprintf(buf, "%d\n", srctrl->tx_avg_rate_sum); - return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf)); -} - -static const struct file_operations sta_tx_avg_rate_sum_ops = { - .read = sta_tx_avg_rate_sum_read, - .open = open_file_generic, -}; - -static ssize_t sta_tx_avg_rate_num_read(struct file *file, - char __user *userbuf, - size_t count, loff_t *ppos) -{ - struct sta_rate_control *srctrl = file->private_data; - char buf[20]; - - sprintf(buf, "%d\n", srctrl->tx_avg_rate_num); - return simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf)); -} - -static const struct file_operations sta_tx_avg_rate_num_ops = { - .read = sta_tx_avg_rate_num_read, - .open = open_file_generic, -}; - -static void rate_control_simple_add_sta_debugfs(void *priv, void *priv_sta, - struct dentry *dir) -{ - struct sta_rate_control *srctrl = priv_sta; - - srctrl->tx_avg_rate_num_dentry = - debugfs_create_file("rc_simple_sta_tx_avg_rate_num", 0400, - dir, srctrl, &sta_tx_avg_rate_num_ops); - srctrl->tx_avg_rate_sum_dentry = - debugfs_create_file("rc_simple_sta_tx_avg_rate_sum", 0400, - dir, srctrl, &sta_tx_avg_rate_sum_ops); -} - -static void rate_control_simple_remove_sta_debugfs(void *priv, void *priv_sta) -{ - struct sta_rate_control *srctrl = priv_sta; - - debugfs_remove(srctrl->tx_avg_rate_sum_dentry); - debugfs_remove(srctrl->tx_avg_rate_num_dentry); -} -#endif - -static struct rate_control_ops mac80211_rcsimple = { - .name = "simple", - .tx_status = rate_control_simple_tx_status, - .get_rate = rate_control_simple_get_rate, - .rate_init = rate_control_simple_rate_init, - .clear = rate_control_simple_clear, - .alloc = rate_control_simple_alloc, - .free = rate_control_simple_free, - .alloc_sta = rate_control_simple_alloc_sta, - .free_sta = rate_control_simple_free_sta, -#ifdef CONFIG_MAC80211_DEBUGFS - .add_sta_debugfs = rate_control_simple_add_sta_debugfs, - .remove_sta_debugfs = rate_control_simple_remove_sta_debugfs, -#endif -}; - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Simple rate control algorithm"); - -int __init rc80211_simple_init(void) -{ - return ieee80211_rate_control_register(&mac80211_rcsimple); -} - -void rc80211_simple_exit(void) -{ - ieee80211_rate_control_unregister(&mac80211_rcsimple); -} - -#ifdef CONFIG_MAC80211_RC_SIMPLE_MODULE -module_init(rc80211_simple_init); -module_exit(rc80211_simple_exit); -#endif diff --git a/net/mac80211/regdomain.c b/net/mac80211/regdomain.c deleted file mode 100644 index f42678f..0000000 --- a/net/mac80211/regdomain.c +++ /dev/null @@ -1,152 +0,0 @@ -/* - * Copyright 2002-2005, Instant802 Networks, Inc. - * Copyright 2005-2006, Devicescape Software, Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -/* - * This regulatory domain control implementation is known to be incomplete - * and confusing. mac80211 regulatory domain control will be significantly - * reworked in the not-too-distant future. - * - * For now, drivers wishing to control which channels are and aren't available - * are advised as follows: - * - set the IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag - * - continue to include *ALL* possible channels in the modes registered - * through ieee80211_register_hwmode() - * - for each allowable ieee80211_channel structure registered in the above - * call, set the flag member to some meaningful value such as - * IEEE80211_CHAN_W_SCAN | IEEE80211_CHAN_W_ACTIVE_SCAN | - * IEEE80211_CHAN_W_IBSS. - * - leave flag as 0 for non-allowable channels - * - * The usual implementation is for a driver to read a device EEPROM to - * determine which regulatory domain it should be operating under, then - * looking up the allowable channels in a driver-local table, then performing - * the above. - */ - -#include <linux/module.h> -#include <linux/netdevice.h> -#include <net/mac80211.h> -#include "ieee80211_i.h" - -static int ieee80211_regdom = 0x10; /* FCC */ -module_param(ieee80211_regdom, int, 0444); -MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain; 64=MKK"); - -/* - * If firmware is upgraded by the vendor, additional channels can be used based - * on the new Japanese regulatory rules. This is indicated by setting - * ieee80211_japan_5ghz module parameter to one when loading the 80211 kernel - * module. - */ -static int ieee80211_japan_5ghz /* = 0 */; -module_param(ieee80211_japan_5ghz, int, 0444); -MODULE_PARM_DESC(ieee80211_japan_5ghz, "Vendor-updated firmware for 5 GHz"); - - -struct ieee80211_channel_range { - short start_freq; - short end_freq; - unsigned char power_level; - unsigned char antenna_max; -}; - -static const struct ieee80211_channel_range ieee80211_fcc_channels[] = { - { 2412, 2462, 27, 6 } /* IEEE 802.11b/g, channels 1..11 */, - { 5180, 5240, 17, 6 } /* IEEE 802.11a, channels 36..48 */, - { 5260, 5320, 23, 6 } /* IEEE 802.11a, channels 52..64 */, - { 5745, 5825, 30, 6 } /* IEEE 802.11a, channels 149..165, outdoor */, - { 0 } -}; - -static const struct ieee80211_channel_range ieee80211_mkk_channels[] = { - { 2412, 2472, 20, 6 } /* IEEE 802.11b/g, channels 1..13 */, - { 5170, 5240, 20, 6 } /* IEEE 802.11a, channels 34..48 */, - { 5260, 5320, 20, 6 } /* IEEE 802.11a, channels 52..64 */, - { 0 } -}; - - -static const struct ieee80211_channel_range *channel_range = - ieee80211_fcc_channels; - - -static void ieee80211_unmask_channel(int mode, struct ieee80211_channel *chan) -{ - int i; - - chan->flag = 0; - - for (i = 0; channel_range[i].start_freq; i++) { - const struct ieee80211_channel_range *r = &channel_range[i]; - if (r->start_freq <= chan->freq && r->end_freq >= chan->freq) { - if (ieee80211_regdom == 64 && !ieee80211_japan_5ghz && - chan->freq >= 5260 && chan->freq <= 5320) { - /* - * Skip new channels in Japan since the - * firmware was not marked having been upgraded - * by the vendor. - */ - continue; - } - - if (ieee80211_regdom == 0x10 && - (chan->freq == 5190 || chan->freq == 5210 || - chan->freq == 5230)) { - /* Skip MKK channels when in FCC domain. */ - continue; - } - - chan->flag |= IEEE80211_CHAN_W_SCAN | - IEEE80211_CHAN_W_ACTIVE_SCAN | - IEEE80211_CHAN_W_IBSS; - chan->power_level = r->power_level; - chan->antenna_max = r->antenna_max; - - if (ieee80211_regdom == 64 && - (chan->freq == 5170 || chan->freq == 5190 || - chan->freq == 5210 || chan->freq == 5230)) { - /* - * New regulatory rules in Japan have backwards - * compatibility with old channels in 5.15-5.25 - * GHz band, but the station is not allowed to - * use active scan on these old channels. - */ - chan->flag &= ~IEEE80211_CHAN_W_ACTIVE_SCAN; - } - - if (ieee80211_regdom == 64 && - (chan->freq == 5260 || chan->freq == 5280 || - chan->freq == 5300 || chan->freq == 5320)) { - /* - * IBSS is not allowed on 5.25-5.35 GHz band - * due to radar detection requirements. - */ - chan->flag &= ~IEEE80211_CHAN_W_IBSS; - } - - break; - } - } -} - - -void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode) -{ - int c; - for (c = 0; c < mode->num_channels; c++) - ieee80211_unmask_channel(mode->mode, &mode->channels[c]); -} - - -void ieee80211_regdomain_init(void) -{ - if (ieee80211_regdom == 0x40) - channel_range = ieee80211_mkk_channels; -} - diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 535407d..52e4554 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -9,6 +9,7 @@ * published by the Free Software Foundation. */ +#include <linux/jiffies.h> #include <linux/kernel.h> #include <linux/skbuff.h> #include <linux/netdevice.h> @@ -18,7 +19,8 @@ #include <net/ieee80211_radiotap.h> #include "ieee80211_i.h" -#include "ieee80211_led.h" +#include "led.h" +#include "mesh.h" #include "wep.h" #include "wpa.h" #include "tkip.h" @@ -82,10 +84,10 @@ static inline int should_drop_frame(struct ieee80211_rx_status *status, */ static struct sk_buff * ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb, - struct ieee80211_rx_status *status) + struct ieee80211_rx_status *status, + struct ieee80211_rate *rate) { struct ieee80211_sub_if_data *sdata; - struct ieee80211_rate *rate; int needed_headroom = 0; struct ieee80211_radiotap_header *rthdr; __le64 *rttsft = NULL; @@ -194,14 +196,11 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb, rtfixed->rx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_RX_BADFCS); - rate = ieee80211_get_rate(local, status->phymode, - status->rate); - if (rate) - rtfixed->rate = rate->rate / 5; + rtfixed->rate = rate->bitrate / 5; rtfixed->chan_freq = cpu_to_le16(status->freq); - if (status->phymode == MODE_IEEE80211A) + if (status->band == IEEE80211_BAND_5GHZ) rtfixed->chan_flags = cpu_to_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ); @@ -226,6 +225,9 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb, if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR) continue; + if (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) + continue; + if (prev_dev) { skb2 = skb_clone(skb, GFP_ATOMIC); if (skb2) { @@ -249,15 +251,7 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb, } -/* pre-rx handlers - * - * these don't have dev/sdata fields in the rx data - * The sta value should also not be used because it may - * be NULL even though a STA (in IBSS mode) will be added. - */ - -static ieee80211_txrx_result -ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx) +static void ieee80211_parse_qos(struct ieee80211_rx_data *rx) { u8 *data = rx->skb->data; int tid; @@ -268,9 +262,9 @@ ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx) /* frame has qos control */ tid = qc[0] & QOS_CONTROL_TID_MASK; if (qc[0] & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT) - rx->flags |= IEEE80211_TXRXD_RX_AMSDU; + rx->flags |= IEEE80211_RX_AMSDU; else - rx->flags &= ~IEEE80211_TXRXD_RX_AMSDU; + rx->flags &= ~IEEE80211_RX_AMSDU; } else { if (unlikely((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)) { /* Separate TID for management frames */ @@ -286,68 +280,19 @@ ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx) if (rx->sta) I802_DEBUG_INC(rx->sta->wme_rx_queue[tid]); - rx->u.rx.queue = tid; + rx->queue = tid; /* Set skb->priority to 1d tag if highest order bit of TID is not set. * For now, set skb->priority to 0 for other cases. */ rx->skb->priority = (tid > 7) ? 0 : tid; - - return TXRX_CONTINUE; } - -static u32 ieee80211_rx_load_stats(struct ieee80211_local *local, - struct sk_buff *skb, - struct ieee80211_rx_status *status) +static void ieee80211_verify_ip_alignment(struct ieee80211_rx_data *rx) { - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - u32 load = 0, hdrtime; - struct ieee80211_rate *rate; - struct ieee80211_hw_mode *mode = local->hw.conf.mode; - int i; - - /* Estimate total channel use caused by this frame */ - - if (unlikely(mode->num_rates < 0)) - return TXRX_CONTINUE; - - rate = &mode->rates[0]; - for (i = 0; i < mode->num_rates; i++) { - if (mode->rates[i].val == status->rate) { - rate = &mode->rates[i]; - break; - } - } - - /* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values, - * 1 usec = 1/8 * (1080 / 10) = 13.5 */ - - if (mode->mode == MODE_IEEE80211A || - (mode->mode == MODE_IEEE80211G && - rate->flags & IEEE80211_RATE_ERP)) - hdrtime = CHAN_UTIL_HDR_SHORT; - else - hdrtime = CHAN_UTIL_HDR_LONG; - - load = hdrtime; - if (!is_multicast_ether_addr(hdr->addr1)) - load += hdrtime; - - load += skb->len * rate->rate_inv; - - /* Divide channel_use by 8 to avoid wrapping around the counter */ - load >>= CHAN_UTIL_SHIFT; - - return load; -} - #ifdef CONFIG_MAC80211_DEBUG_PACKET_ALIGNMENT -static ieee80211_txrx_result -ieee80211_rx_h_verify_ip_alignment(struct ieee80211_txrx_data *rx) -{ int hdrlen; if (!WLAN_FC_DATA_PRESENT(rx->fc)) - return TXRX_CONTINUE; + return; /* * Drivers are required to align the payload data in a way that @@ -369,83 +314,158 @@ ieee80211_rx_h_verify_ip_alignment(struct ieee80211_txrx_data *rx) * to move the 802.11 header further back in that case. */ hdrlen = ieee80211_get_hdrlen(rx->fc); - if (rx->flags & IEEE80211_TXRXD_RX_AMSDU) + if (rx->flags & IEEE80211_RX_AMSDU) hdrlen += ETH_HLEN; WARN_ON_ONCE(((unsigned long)(rx->skb->data + hdrlen)) & 3); - - return TXRX_CONTINUE; -} #endif +} + -ieee80211_rx_handler ieee80211_rx_pre_handlers[] = +static u32 ieee80211_rx_load_stats(struct ieee80211_local *local, + struct sk_buff *skb, + struct ieee80211_rx_status *status, + struct ieee80211_rate *rate) { - ieee80211_rx_h_parse_qos, -#ifdef CONFIG_MAC80211_DEBUG_PACKET_ALIGNMENT - ieee80211_rx_h_verify_ip_alignment, -#endif - NULL -}; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + u32 load = 0, hdrtime; + + /* Estimate total channel use caused by this frame */ + + /* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values, + * 1 usec = 1/8 * (1080 / 10) = 13.5 */ + + if (status->band == IEEE80211_BAND_5GHZ || + (status->band == IEEE80211_BAND_5GHZ && + rate->flags & IEEE80211_RATE_ERP_G)) + hdrtime = CHAN_UTIL_HDR_SHORT; + else + hdrtime = CHAN_UTIL_HDR_LONG; + + load = hdrtime; + if (!is_multicast_ether_addr(hdr->addr1)) + load += hdrtime; + + /* TODO: optimise again */ + load += skb->len * CHAN_UTIL_RATE_LCM / rate->bitrate; + + /* Divide channel_use by 8 to avoid wrapping around the counter */ + load >>= CHAN_UTIL_SHIFT; + + return load; +} /* rx handlers */ -static ieee80211_txrx_result -ieee80211_rx_h_if_stats(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_if_stats(struct ieee80211_rx_data *rx) { if (rx->sta) - rx->sta->channel_use_raw += rx->u.rx.load; - rx->sdata->channel_use_raw += rx->u.rx.load; - return TXRX_CONTINUE; + rx->sta->channel_use_raw += rx->load; + rx->sdata->channel_use_raw += rx->load; + return RX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_rx_h_passive_scan(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_passive_scan(struct ieee80211_rx_data *rx) { struct ieee80211_local *local = rx->local; struct sk_buff *skb = rx->skb; if (unlikely(local->sta_hw_scanning)) - return ieee80211_sta_rx_scan(rx->dev, skb, rx->u.rx.status); + return ieee80211_sta_rx_scan(rx->dev, skb, rx->status); if (unlikely(local->sta_sw_scanning)) { /* drop all the other packets during a software scan anyway */ - if (ieee80211_sta_rx_scan(rx->dev, skb, rx->u.rx.status) - != TXRX_QUEUED) + if (ieee80211_sta_rx_scan(rx->dev, skb, rx->status) + != RX_QUEUED) dev_kfree_skb(skb); - return TXRX_QUEUED; + return RX_QUEUED; } - if (unlikely(rx->flags & IEEE80211_TXRXD_RXIN_SCAN)) { + if (unlikely(rx->flags & IEEE80211_RX_IN_SCAN)) { /* scanning finished during invoking of handlers */ I802_DEBUG_INC(local->rx_handlers_drop_passive_scan); - return TXRX_DROP; + return RX_DROP_UNUSABLE; } - return TXRX_CONTINUE; + return RX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_rx_h_check(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx) +{ + int hdrlen = ieee80211_get_hdrlen(rx->fc); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data; + +#define msh_h_get(h, l) ((struct ieee80211s_hdr *) ((u8 *)h + l)) + + if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) { + if (!((rx->fc & IEEE80211_FCTL_FROMDS) && + (rx->fc & IEEE80211_FCTL_TODS))) + return RX_DROP_MONITOR; + if (memcmp(hdr->addr4, rx->dev->dev_addr, ETH_ALEN) == 0) + return RX_DROP_MONITOR; + } + + /* If there is not an established peer link and this is not a peer link + * establisment frame, beacon or probe, drop the frame. + */ + + if (!rx->sta || sta_plink_state(rx->sta) != PLINK_ESTAB) { + struct ieee80211_mgmt *mgmt; + + if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT) + return RX_DROP_MONITOR; + + switch (rx->fc & IEEE80211_FCTL_STYPE) { + case IEEE80211_STYPE_ACTION: + mgmt = (struct ieee80211_mgmt *)hdr; + if (mgmt->u.action.category != PLINK_CATEGORY) + return RX_DROP_MONITOR; + /* fall through on else */ + case IEEE80211_STYPE_PROBE_REQ: + case IEEE80211_STYPE_PROBE_RESP: + case IEEE80211_STYPE_BEACON: + return RX_CONTINUE; + break; + default: + return RX_DROP_MONITOR; + } + + } else if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA && + is_multicast_ether_addr(hdr->addr1) && + mesh_rmc_check(hdr->addr4, msh_h_get(hdr, hdrlen), rx->dev)) + return RX_DROP_MONITOR; +#undef msh_h_get + + return RX_CONTINUE; +} + + +static ieee80211_rx_result +ieee80211_rx_h_check(struct ieee80211_rx_data *rx) { struct ieee80211_hdr *hdr; + hdr = (struct ieee80211_hdr *) rx->skb->data; /* Drop duplicate 802.11 retransmissions (IEEE 802.11 Chap. 9.2.9) */ if (rx->sta && !is_multicast_ether_addr(hdr->addr1)) { if (unlikely(rx->fc & IEEE80211_FCTL_RETRY && - rx->sta->last_seq_ctrl[rx->u.rx.queue] == + rx->sta->last_seq_ctrl[rx->queue] == hdr->seq_ctrl)) { - if (rx->flags & IEEE80211_TXRXD_RXRA_MATCH) { + if (rx->flags & IEEE80211_RX_RA_MATCH) { rx->local->dot11FrameDuplicateCount++; rx->sta->num_duplicates++; } - return TXRX_DROP; + return RX_DROP_MONITOR; } else - rx->sta->last_seq_ctrl[rx->u.rx.queue] = hdr->seq_ctrl; + rx->sta->last_seq_ctrl[rx->queue] = hdr->seq_ctrl; } if (unlikely(rx->skb->len < 16)) { I802_DEBUG_INC(rx->local->rx_handlers_drop_short); - return TXRX_DROP; + return RX_DROP_MONITOR; } /* Drop disallowed frame classes based on STA auth/assoc state; @@ -456,6 +476,10 @@ ieee80211_rx_h_check(struct ieee80211_txrx_data *rx) * deauth/disassoc frames when needed. In addition, hostapd is * responsible for filtering on both auth and assoc states. */ + + if (ieee80211_vif_is_mesh(&rx->sdata->vif)) + return ieee80211_rx_mesh_check(rx); + if (unlikely(((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA || ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL && (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)) && @@ -464,26 +488,26 @@ ieee80211_rx_h_check(struct ieee80211_txrx_data *rx) if ((!(rx->fc & IEEE80211_FCTL_FROMDS) && !(rx->fc & IEEE80211_FCTL_TODS) && (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) - || !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) { + || !(rx->flags & IEEE80211_RX_RA_MATCH)) { /* Drop IBSS frames and frames for other hosts * silently. */ - return TXRX_DROP; + return RX_DROP_MONITOR; } - return TXRX_DROP; + return RX_DROP_MONITOR; } - return TXRX_CONTINUE; + return RX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data; int keyidx; int hdrlen; - ieee80211_txrx_result result = TXRX_DROP; + ieee80211_rx_result result = RX_DROP_UNUSABLE; struct ieee80211_key *stakey = NULL; /* @@ -513,14 +537,14 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx) */ if (!(rx->fc & IEEE80211_FCTL_PROTECTED)) - return TXRX_CONTINUE; + return RX_CONTINUE; /* * No point in finding a key and decrypting if the frame is neither * addressed to us nor a multicast frame. */ - if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) - return TXRX_CONTINUE; + if (!(rx->flags & IEEE80211_RX_RA_MATCH)) + return RX_CONTINUE; if (rx->sta) stakey = rcu_dereference(rx->sta->key); @@ -537,14 +561,14 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx) * we somehow allow the driver to tell us which key * the hardware used if this flag is set? */ - if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) && - (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED)) - return TXRX_CONTINUE; + if ((rx->status->flag & RX_FLAG_DECRYPTED) && + (rx->status->flag & RX_FLAG_IV_STRIPPED)) + return RX_CONTINUE; hdrlen = ieee80211_get_hdrlen(rx->fc); if (rx->skb->len < 8 + hdrlen) - return TXRX_DROP; /* TODO: count this? */ + return RX_DROP_UNUSABLE; /* TODO: count this? */ /* * no need to call ieee80211_wep_get_keyidx, @@ -573,14 +597,14 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx) printk(KERN_DEBUG "%s: RX protected frame," " but have no key\n", rx->dev->name); #endif /* CONFIG_MAC80211_DEBUG */ - return TXRX_DROP; + return RX_DROP_MONITOR; } /* Check for weak IVs if possible */ if (rx->sta && rx->key->conf.alg == ALG_WEP && ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && - (!(rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED) || - !(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) && + (!(rx->status->flag & RX_FLAG_IV_STRIPPED) || + !(rx->status->flag & RX_FLAG_DECRYPTED)) && ieee80211_wep_is_weak_iv(rx->skb, rx->key)) rx->sta->wep_weak_iv_count++; @@ -597,7 +621,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_txrx_data *rx) } /* either the frame has been decrypted or will be dropped */ - rx->u.rx.status->flag |= RX_FLAG_DECRYPTED; + rx->status->flag |= RX_FLAG_DECRYPTED; return result; } @@ -607,12 +631,12 @@ static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta) struct ieee80211_sub_if_data *sdata; DECLARE_MAC_BUF(mac); - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); + sdata = sta->sdata; if (sdata->bss) atomic_inc(&sdata->bss->num_sta_ps); sta->flags |= WLAN_STA_PS; - sta->pspoll = 0; + sta->flags &= ~WLAN_STA_PSPOLL; #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "%s: STA %s aid %d enters power save mode\n", dev->name, print_mac(mac, sta->addr), sta->aid); @@ -628,21 +652,21 @@ static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta) struct ieee80211_tx_packet_data *pkt_data; DECLARE_MAC_BUF(mac); - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); + sdata = sta->sdata; + if (sdata->bss) atomic_dec(&sdata->bss->num_sta_ps); - sta->flags &= ~(WLAN_STA_PS | WLAN_STA_TIM); - sta->pspoll = 0; - if (!skb_queue_empty(&sta->ps_tx_buf)) { - if (local->ops->set_tim) - local->ops->set_tim(local_to_hw(local), sta->aid, 0); - if (sdata->bss) - bss_tim_clear(local, sdata->bss, sta->aid); - } + + sta->flags &= ~(WLAN_STA_PS | WLAN_STA_PSPOLL); + + if (!skb_queue_empty(&sta->ps_tx_buf)) + sta_info_clear_tim_bit(sta); + #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "%s: STA %s aid %d exits power save mode\n", dev->name, print_mac(mac, sta->addr), sta->aid); #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ + /* Send all buffered frames to the station */ while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) { pkt_data = (struct ieee80211_tx_packet_data *) skb->cb; @@ -666,15 +690,15 @@ static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta) return sent; } -static ieee80211_txrx_result -ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) { struct sta_info *sta = rx->sta; struct net_device *dev = rx->dev; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data; if (!sta) - return TXRX_CONTINUE; + return RX_CONTINUE; /* Update last_rx only for IBSS packets which are for the current * BSSID to avoid keeping the current IBSS network alive in cases where @@ -690,24 +714,26 @@ ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx) /* Update last_rx only for unicast frames in order to prevent * the Probe Request frames (the only broadcast frames from a * STA in infrastructure mode) from keeping a connection alive. + * Mesh beacons will update last_rx when if they are found to + * match the current local configuration when processed. */ sta->last_rx = jiffies; } - if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) - return TXRX_CONTINUE; + if (!(rx->flags & IEEE80211_RX_RA_MATCH)) + return RX_CONTINUE; sta->rx_fragments++; sta->rx_bytes += rx->skb->len; - sta->last_rssi = rx->u.rx.status->ssi; - sta->last_signal = rx->u.rx.status->signal; - sta->last_noise = rx->u.rx.status->noise; + sta->last_rssi = rx->status->ssi; + sta->last_signal = rx->status->signal; + sta->last_noise = rx->status->noise; if (!(rx->fc & IEEE80211_FCTL_MOREFRAGS)) { /* Change STA power saving mode only in the end of a frame * exchange sequence */ if ((sta->flags & WLAN_STA_PS) && !(rx->fc & IEEE80211_FCTL_PM)) - rx->u.rx.sent_ps_buffered += ap_sta_ps_end(dev, sta); + rx->sent_ps_buffered += ap_sta_ps_end(dev, sta); else if (!(sta->flags & WLAN_STA_PS) && (rx->fc & IEEE80211_FCTL_PM)) ap_sta_ps_start(dev, sta); @@ -722,10 +748,10 @@ ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx) * as a dropped packed. */ sta->rx_packets++; dev_kfree_skb(rx->skb); - return TXRX_QUEUED; + return RX_QUEUED; } - return TXRX_CONTINUE; + return RX_CONTINUE; } /* ieee80211_rx_h_sta_process */ static inline struct ieee80211_fragment_entry * @@ -801,7 +827,7 @@ ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata, compare_ether_addr(hdr->addr2, f_hdr->addr2) != 0) continue; - if (entry->first_frag_time + 2 * HZ < jiffies) { + if (time_after(jiffies, entry->first_frag_time + 2 * HZ)) { __skb_queue_purge(&entry->skb_list); continue; } @@ -811,8 +837,8 @@ ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata, return NULL; } -static ieee80211_txrx_result -ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) { struct ieee80211_hdr *hdr; u16 sc; @@ -838,27 +864,27 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx) if (frag == 0) { /* This is the first fragment of a new frame. */ entry = ieee80211_reassemble_add(rx->sdata, frag, seq, - rx->u.rx.queue, &(rx->skb)); + rx->queue, &(rx->skb)); if (rx->key && rx->key->conf.alg == ALG_CCMP && (rx->fc & IEEE80211_FCTL_PROTECTED)) { /* Store CCMP PN so that we can verify that the next * fragment has a sequential PN value. */ entry->ccmp = 1; memcpy(entry->last_pn, - rx->key->u.ccmp.rx_pn[rx->u.rx.queue], + rx->key->u.ccmp.rx_pn[rx->queue], CCMP_PN_LEN); } - return TXRX_QUEUED; + return RX_QUEUED; } /* This is a fragment for a frame that should already be pending in * fragment cache. Add this fragment to the end of the pending entry. */ entry = ieee80211_reassemble_find(rx->sdata, rx->fc, frag, seq, - rx->u.rx.queue, hdr); + rx->queue, hdr); if (!entry) { I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag); - return TXRX_DROP; + return RX_DROP_MONITOR; } /* Verify that MPDUs within one MSDU have sequential PN values. @@ -867,14 +893,14 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx) int i; u8 pn[CCMP_PN_LEN], *rpn; if (!rx->key || rx->key->conf.alg != ALG_CCMP) - return TXRX_DROP; + return RX_DROP_UNUSABLE; memcpy(pn, entry->last_pn, CCMP_PN_LEN); for (i = CCMP_PN_LEN - 1; i >= 0; i--) { pn[i]++; if (pn[i]) break; } - rpn = rx->key->u.ccmp.rx_pn[rx->u.rx.queue]; + rpn = rx->key->u.ccmp.rx_pn[rx->queue]; if (memcmp(pn, rpn, CCMP_PN_LEN) != 0) { if (net_ratelimit()) printk(KERN_DEBUG "%s: defrag: CCMP PN not " @@ -885,7 +911,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx) rpn[0], rpn[1], rpn[2], rpn[3], rpn[4], rpn[5], pn[0], pn[1], pn[2], pn[3], pn[4], pn[5]); - return TXRX_DROP; + return RX_DROP_UNUSABLE; } memcpy(entry->last_pn, pn, CCMP_PN_LEN); } @@ -896,7 +922,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx) entry->extra_len += rx->skb->len; if (rx->fc & IEEE80211_FCTL_MOREFRAGS) { rx->skb = NULL; - return TXRX_QUEUED; + return RX_QUEUED; } rx->skb = __skb_dequeue(&entry->skb_list); @@ -906,7 +932,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx) GFP_ATOMIC))) { I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag); __skb_queue_purge(&entry->skb_list); - return TXRX_DROP; + return RX_DROP_UNUSABLE; } } while ((skb = __skb_dequeue(&entry->skb_list))) { @@ -915,7 +941,7 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx) } /* Complete frame has been reassembled - process it now */ - rx->flags |= IEEE80211_TXRXD_FRAGMENTED; + rx->flags |= IEEE80211_RX_FRAGMENTED; out: if (rx->sta) @@ -924,11 +950,11 @@ ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx) rx->local->dot11MulticastReceivedFrameCount++; else ieee80211_led_rx(rx->local); - return TXRX_CONTINUE; + return RX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_ps_poll(struct ieee80211_rx_data *rx) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev); struct sk_buff *skb; @@ -938,12 +964,12 @@ ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx) if (likely(!rx->sta || (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL || (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PSPOLL || - !(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))) - return TXRX_CONTINUE; + !(rx->flags & IEEE80211_RX_RA_MATCH))) + return RX_CONTINUE; if ((sdata->vif.type != IEEE80211_IF_TYPE_AP) && (sdata->vif.type != IEEE80211_IF_TYPE_VLAN)) - return TXRX_DROP; + return RX_DROP_UNUSABLE; skb = skb_dequeue(&rx->sta->tx_filtered); if (!skb) { @@ -958,9 +984,11 @@ ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx) struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - /* tell TX path to send one frame even though the STA may - * still remain is PS mode after this frame exchange */ - rx->sta->pspoll = 1; + /* + * Tell TX path to send one frame even though the STA may + * still remain is PS mode after this frame exchange. + */ + rx->sta->flags |= WLAN_STA_PSPOLL; #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "STA %s aid %d: PS Poll (entries after %d)\n", @@ -970,46 +998,45 @@ ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx) /* Use MoreData flag to indicate whether there are more * buffered frames for this STA */ - if (no_pending_pkts) { + if (no_pending_pkts) hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREDATA); - rx->sta->flags &= ~WLAN_STA_TIM; - } else + else hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA); dev_queue_xmit(skb); - if (no_pending_pkts) { - if (rx->local->ops->set_tim) - rx->local->ops->set_tim(local_to_hw(rx->local), - rx->sta->aid, 0); - if (rx->sdata->bss) - bss_tim_clear(rx->local, rx->sdata->bss, rx->sta->aid); - } + if (no_pending_pkts) + sta_info_clear_tim_bit(rx->sta); #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG - } else if (!rx->u.rx.sent_ps_buffered) { + } else if (!rx->sent_ps_buffered) { + /* + * FIXME: This can be the result of a race condition between + * us expiring a frame and the station polling for it. + * Should we send it a null-func frame indicating we + * have nothing buffered for it? + */ printk(KERN_DEBUG "%s: STA %s sent PS Poll even " "though there is no buffered frames for it\n", rx->dev->name, print_mac(mac, rx->sta->addr)); #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ - } - /* Free PS Poll skb here instead of returning TXRX_DROP that would + /* Free PS Poll skb here instead of returning RX_DROP that would * count as an dropped frame. */ dev_kfree_skb(rx->skb); - return TXRX_QUEUED; + return RX_QUEUED; } -static ieee80211_txrx_result -ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_remove_qos_control(struct ieee80211_rx_data *rx) { u16 fc = rx->fc; u8 *data = rx->skb->data; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) data; if (!WLAN_FC_IS_QOS_DATA(fc)) - return TXRX_CONTINUE; + return RX_CONTINUE; /* remove the qos control field, update frame type and meta-data */ memmove(data + 2, data, ieee80211_get_hdrlen(fc) - 2); @@ -1018,17 +1045,17 @@ ieee80211_rx_h_remove_qos_control(struct ieee80211_txrx_data *rx) rx->fc = fc &= ~IEEE80211_STYPE_QOS_DATA; hdr->frame_control = cpu_to_le16(fc); - return TXRX_CONTINUE; + return RX_CONTINUE; } static int -ieee80211_802_1x_port_control(struct ieee80211_txrx_data *rx) +ieee80211_802_1x_port_control(struct ieee80211_rx_data *rx) { - if (unlikely(rx->sdata->ieee802_1x_pac && - (!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED)))) { + if (unlikely(!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED))) { #ifdef CONFIG_MAC80211_DEBUG - printk(KERN_DEBUG "%s: dropped frame " - "(unauthorized port)\n", rx->dev->name); + if (net_ratelimit()) + printk(KERN_DEBUG "%s: dropped frame " + "(unauthorized port)\n", rx->dev->name); #endif /* CONFIG_MAC80211_DEBUG */ return -EACCES; } @@ -1037,30 +1064,27 @@ ieee80211_802_1x_port_control(struct ieee80211_txrx_data *rx) } static int -ieee80211_drop_unencrypted(struct ieee80211_txrx_data *rx) +ieee80211_drop_unencrypted(struct ieee80211_rx_data *rx) { /* * Pass through unencrypted frames if the hardware has * decrypted them already. */ - if (rx->u.rx.status->flag & RX_FLAG_DECRYPTED) + if (rx->status->flag & RX_FLAG_DECRYPTED) return 0; /* Drop unencrypted frames if key is set. */ if (unlikely(!(rx->fc & IEEE80211_FCTL_PROTECTED) && (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA && (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC && - (rx->key || rx->sdata->drop_unencrypted))) { - if (net_ratelimit()) - printk(KERN_DEBUG "%s: RX non-WEP frame, but expected " - "encryption\n", rx->dev->name); + (rx->key || rx->sdata->drop_unencrypted))) return -EACCES; - } + return 0; } static int -ieee80211_data_to_8023(struct ieee80211_txrx_data *rx) +ieee80211_data_to_8023(struct ieee80211_rx_data *rx) { struct net_device *dev = rx->dev; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data; @@ -1082,6 +1106,21 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx) hdrlen = ieee80211_get_hdrlen(fc); + if (ieee80211_vif_is_mesh(&sdata->vif)) { + int meshhdrlen = ieee80211_get_mesh_hdrlen( + (struct ieee80211s_hdr *) (skb->data + hdrlen)); + /* Copy on cb: + * - mesh header: to be used for mesh forwarding + * decision. It will also be used as mesh header template at + * tx.c:ieee80211_subif_start_xmit() if interface + * type is mesh and skb->pkt_type == PACKET_OTHERHOST + * - ta: to be used if a RERR needs to be sent. + */ + memcpy(skb->cb, skb->data + hdrlen, meshhdrlen); + memcpy(MESH_PREQ(skb), hdr->addr2, ETH_ALEN); + hdrlen += meshhdrlen; + } + /* convert IEEE 802.11 header + possible LLC headers into Ethernet * header * IEEE 802.11 address fields: @@ -1115,9 +1154,10 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx) memcpy(dst, hdr->addr3, ETH_ALEN); memcpy(src, hdr->addr4, ETH_ALEN); - if (unlikely(sdata->vif.type != IEEE80211_IF_TYPE_WDS)) { - if (net_ratelimit()) - printk(KERN_DEBUG "%s: dropped FromDS&ToDS " + if (unlikely(sdata->vif.type != IEEE80211_IF_TYPE_WDS && + sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)) { + if (net_ratelimit()) + printk(KERN_DEBUG "%s: dropped FromDS&ToDS " "frame (RA=%s TA=%s DA=%s SA=%s)\n", rx->dev->name, print_mac(mac, hdr->addr1), @@ -1192,7 +1232,7 @@ ieee80211_data_to_8023(struct ieee80211_txrx_data *rx) /* * requires that rx->skb is a frame with ethernet header */ -static bool ieee80211_frame_allowed(struct ieee80211_txrx_data *rx) +static bool ieee80211_frame_allowed(struct ieee80211_rx_data *rx) { static const u8 pae_group_addr[ETH_ALEN] = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x03 }; @@ -1218,7 +1258,7 @@ static bool ieee80211_frame_allowed(struct ieee80211_txrx_data *rx) * requires that rx->skb is a frame with ethernet header */ static void -ieee80211_deliver_skb(struct ieee80211_txrx_data *rx) +ieee80211_deliver_skb(struct ieee80211_rx_data *rx) { struct net_device *dev = rx->dev; struct ieee80211_local *local = rx->local; @@ -1232,7 +1272,7 @@ ieee80211_deliver_skb(struct ieee80211_txrx_data *rx) if (local->bridge_packets && (sdata->vif.type == IEEE80211_IF_TYPE_AP || sdata->vif.type == IEEE80211_IF_TYPE_VLAN) && - (rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) { + (rx->flags & IEEE80211_RX_RA_MATCH)) { if (is_multicast_ether_addr(ehdr->h_dest)) { /* * send multicast frames both to higher layers in @@ -1244,7 +1284,7 @@ ieee80211_deliver_skb(struct ieee80211_txrx_data *rx) "multicast frame\n", dev->name); } else { dsta = sta_info_get(local, skb->data); - if (dsta && dsta->dev == dev) { + if (dsta && dsta->sdata->dev == dev) { /* * The destination station is associated to * this AP (in this VLAN), so send the frame @@ -1254,8 +1294,38 @@ ieee80211_deliver_skb(struct ieee80211_txrx_data *rx) xmit_skb = skb; skb = NULL; } - if (dsta) - sta_info_put(dsta); + } + } + + /* Mesh forwarding */ + if (ieee80211_vif_is_mesh(&sdata->vif)) { + u8 *mesh_ttl = &((struct ieee80211s_hdr *)skb->cb)->ttl; + (*mesh_ttl)--; + + if (is_multicast_ether_addr(skb->data)) { + if (*mesh_ttl > 0) { + xmit_skb = skb_copy(skb, GFP_ATOMIC); + if (!xmit_skb && net_ratelimit()) + printk(KERN_DEBUG "%s: failed to clone " + "multicast frame\n", dev->name); + else + xmit_skb->pkt_type = PACKET_OTHERHOST; + } else + IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.sta, + dropped_frames_ttl); + } else if (skb->pkt_type != PACKET_OTHERHOST && + compare_ether_addr(dev->dev_addr, skb->data) != 0) { + if (*mesh_ttl == 0) { + IEEE80211_IFSTA_MESH_CTR_INC(&sdata->u.sta, + dropped_frames_ttl); + dev_kfree_skb(skb); + skb = NULL; + } else { + xmit_skb = skb; + xmit_skb->pkt_type = PACKET_OTHERHOST; + if (!(dev->flags & IFF_PROMISC)) + skb = NULL; + } } } @@ -1275,8 +1345,8 @@ ieee80211_deliver_skb(struct ieee80211_txrx_data *rx) } } -static ieee80211_txrx_result -ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx) { struct net_device *dev = rx->dev; struct ieee80211_local *local = rx->local; @@ -1291,17 +1361,17 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx) fc = rx->fc; if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)) - return TXRX_CONTINUE; + return RX_CONTINUE; if (unlikely(!WLAN_FC_DATA_PRESENT(fc))) - return TXRX_DROP; + return RX_DROP_MONITOR; - if (!(rx->flags & IEEE80211_TXRXD_RX_AMSDU)) - return TXRX_CONTINUE; + if (!(rx->flags & IEEE80211_RX_AMSDU)) + return RX_CONTINUE; err = ieee80211_data_to_8023(rx); if (unlikely(err)) - return TXRX_DROP; + return RX_DROP_UNUSABLE; skb->dev = dev; @@ -1311,7 +1381,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx) /* skip the wrapping header */ eth = (struct ethhdr *) skb_pull(skb, sizeof(struct ethhdr)); if (!eth) - return TXRX_DROP; + return RX_DROP_UNUSABLE; while (skb != frame) { u8 padding; @@ -1326,7 +1396,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx) /* the last MSDU has no padding */ if (subframe_len > remaining) { printk(KERN_DEBUG "%s: wrong buffer size", dev->name); - return TXRX_DROP; + return RX_DROP_UNUSABLE; } skb_pull(skb, sizeof(struct ethhdr)); @@ -1338,7 +1408,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx) subframe_len); if (frame == NULL) - return TXRX_DROP; + return RX_DROP_UNUSABLE; skb_reserve(frame, local->hw.extra_tx_headroom + sizeof(struct ethhdr)); @@ -1351,7 +1421,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx) printk(KERN_DEBUG "%s: wrong buffer size ", dev->name); dev_kfree_skb(frame); - return TXRX_DROP; + return RX_DROP_UNUSABLE; } } @@ -1381,7 +1451,7 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx) if (!ieee80211_frame_allowed(rx)) { if (skb == frame) /* last frame */ - return TXRX_DROP; + return RX_DROP_UNUSABLE; dev_kfree_skb(frame); continue; } @@ -1389,11 +1459,11 @@ ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx) ieee80211_deliver_skb(rx); } - return TXRX_QUEUED; + return RX_QUEUED; } -static ieee80211_txrx_result -ieee80211_rx_h_data(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_data(struct ieee80211_rx_data *rx) { struct net_device *dev = rx->dev; u16 fc; @@ -1401,17 +1471,17 @@ ieee80211_rx_h_data(struct ieee80211_txrx_data *rx) fc = rx->fc; if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)) - return TXRX_CONTINUE; + return RX_CONTINUE; if (unlikely(!WLAN_FC_DATA_PRESENT(fc))) - return TXRX_DROP; + return RX_DROP_MONITOR; err = ieee80211_data_to_8023(rx); if (unlikely(err)) - return TXRX_DROP; + return RX_DROP_UNUSABLE; if (!ieee80211_frame_allowed(rx)) - return TXRX_DROP; + return RX_DROP_MONITOR; rx->skb->dev = dev; @@ -1420,11 +1490,11 @@ ieee80211_rx_h_data(struct ieee80211_txrx_data *rx) ieee80211_deliver_skb(rx); - return TXRX_QUEUED; + return RX_QUEUED; } -static ieee80211_txrx_result -ieee80211_rx_h_ctrl(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx) { struct ieee80211_local *local = rx->local; struct ieee80211_hw *hw = &local->hw; @@ -1435,15 +1505,16 @@ ieee80211_rx_h_ctrl(struct ieee80211_txrx_data *rx) u16 tid; if (likely((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL)) - return TXRX_CONTINUE; + return RX_CONTINUE; if ((rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BACK_REQ) { if (!rx->sta) - return TXRX_CONTINUE; + return RX_CONTINUE; tid = le16_to_cpu(bar->control) >> 12; - tid_agg_rx = &(rx->sta->ampdu_mlme.tid_rx[tid]); - if (tid_agg_rx->state != HT_AGG_STATE_OPERATIONAL) - return TXRX_CONTINUE; + if (rx->sta->ampdu_mlme.tid_state_rx[tid] + != HT_AGG_STATE_OPERATIONAL) + return RX_CONTINUE; + tid_agg_rx = rx->sta->ampdu_mlme.tid_rx[tid]; start_seq_num = le16_to_cpu(bar->start_seq_num) >> 4; @@ -1460,77 +1531,35 @@ ieee80211_rx_h_ctrl(struct ieee80211_txrx_data *rx) ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, NULL, start_seq_num, 1); rcu_read_unlock(); - return TXRX_DROP; + return RX_DROP_UNUSABLE; } - return TXRX_CONTINUE; + return RX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_rx_h_mgmt(struct ieee80211_txrx_data *rx) +static ieee80211_rx_result +ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) { struct ieee80211_sub_if_data *sdata; - if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) - return TXRX_DROP; + if (!(rx->flags & IEEE80211_RX_RA_MATCH)) + return RX_DROP_MONITOR; sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev); if ((sdata->vif.type == IEEE80211_IF_TYPE_STA || - sdata->vif.type == IEEE80211_IF_TYPE_IBSS) && + sdata->vif.type == IEEE80211_IF_TYPE_IBSS || + sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) && !(sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)) - ieee80211_sta_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status); + ieee80211_sta_rx_mgmt(rx->dev, rx->skb, rx->status); else - return TXRX_DROP; + return RX_DROP_MONITOR; - return TXRX_QUEUED; -} - -static inline ieee80211_txrx_result __ieee80211_invoke_rx_handlers( - struct ieee80211_local *local, - ieee80211_rx_handler *handlers, - struct ieee80211_txrx_data *rx, - struct sta_info *sta) -{ - ieee80211_rx_handler *handler; - ieee80211_txrx_result res = TXRX_DROP; - - for (handler = handlers; *handler != NULL; handler++) { - res = (*handler)(rx); - - switch (res) { - case TXRX_CONTINUE: - continue; - case TXRX_DROP: - I802_DEBUG_INC(local->rx_handlers_drop); - if (sta) - sta->rx_dropped++; - break; - case TXRX_QUEUED: - I802_DEBUG_INC(local->rx_handlers_queued); - break; - } - break; - } - - if (res == TXRX_DROP) - dev_kfree_skb(rx->skb); - return res; -} - -static inline void ieee80211_invoke_rx_handlers(struct ieee80211_local *local, - ieee80211_rx_handler *handlers, - struct ieee80211_txrx_data *rx, - struct sta_info *sta) -{ - if (__ieee80211_invoke_rx_handlers(local, handlers, rx, sta) == - TXRX_CONTINUE) - dev_kfree_skb(rx->skb); + return RX_QUEUED; } static void ieee80211_rx_michael_mic_report(struct net_device *dev, struct ieee80211_hdr *hdr, - struct sta_info *sta, - struct ieee80211_txrx_data *rx) + struct ieee80211_rx_data *rx) { int keyidx, hdrlen; DECLARE_MAC_BUF(mac); @@ -1548,7 +1577,7 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev, dev->name, print_mac(mac, hdr->addr2), print_mac(mac2, hdr->addr1), keyidx); - if (!sta) { + if (!rx->sta) { /* * Some hardware seem to generate incorrect Michael MIC * reports; ignore them to avoid triggering countermeasures. @@ -1600,7 +1629,89 @@ static void ieee80211_rx_michael_mic_report(struct net_device *dev, rx->skb = NULL; } -ieee80211_rx_handler ieee80211_rx_handlers[] = +/* TODO: use IEEE80211_RX_FRAGMENTED */ +static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx) +{ + struct ieee80211_sub_if_data *sdata; + struct ieee80211_local *local = rx->local; + struct ieee80211_rtap_hdr { + struct ieee80211_radiotap_header hdr; + u8 flags; + u8 rate; + __le16 chan_freq; + __le16 chan_flags; + } __attribute__ ((packed)) *rthdr; + struct sk_buff *skb = rx->skb, *skb2; + struct net_device *prev_dev = NULL; + struct ieee80211_rx_status *status = rx->status; + + if (rx->flags & IEEE80211_RX_CMNTR_REPORTED) + goto out_free_skb; + + if (skb_headroom(skb) < sizeof(*rthdr) && + pskb_expand_head(skb, sizeof(*rthdr), 0, GFP_ATOMIC)) + goto out_free_skb; + + rthdr = (void *)skb_push(skb, sizeof(*rthdr)); + memset(rthdr, 0, sizeof(*rthdr)); + rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); + rthdr->hdr.it_present = + cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | + (1 << IEEE80211_RADIOTAP_RATE) | + (1 << IEEE80211_RADIOTAP_CHANNEL)); + + rthdr->rate = rx->rate->bitrate / 5; + rthdr->chan_freq = cpu_to_le16(status->freq); + + if (status->band == IEEE80211_BAND_5GHZ) + rthdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_OFDM | + IEEE80211_CHAN_5GHZ); + else + rthdr->chan_flags = cpu_to_le16(IEEE80211_CHAN_DYN | + IEEE80211_CHAN_2GHZ); + + skb_set_mac_header(skb, 0); + skb->ip_summed = CHECKSUM_UNNECESSARY; + skb->pkt_type = PACKET_OTHERHOST; + skb->protocol = htons(ETH_P_802_2); + + list_for_each_entry_rcu(sdata, &local->interfaces, list) { + if (!netif_running(sdata->dev)) + continue; + + if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || + !(sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)) + continue; + + if (prev_dev) { + skb2 = skb_clone(skb, GFP_ATOMIC); + if (skb2) { + skb2->dev = prev_dev; + netif_rx(skb2); + } + } + + prev_dev = sdata->dev; + sdata->dev->stats.rx_packets++; + sdata->dev->stats.rx_bytes += skb->len; + } + + if (prev_dev) { + skb->dev = prev_dev; + netif_rx(skb); + skb = NULL; + } else + goto out_free_skb; + + rx->flags |= IEEE80211_RX_CMNTR_REPORTED; + return; + + out_free_skb: + dev_kfree_skb(skb); +} + +typedef ieee80211_rx_result (*ieee80211_rx_handler)(struct ieee80211_rx_data *); +static ieee80211_rx_handler ieee80211_rx_handlers[] = { ieee80211_rx_h_if_stats, ieee80211_rx_h_passive_scan, @@ -1622,10 +1733,51 @@ ieee80211_rx_handler ieee80211_rx_handlers[] = NULL }; +static void ieee80211_invoke_rx_handlers(struct ieee80211_sub_if_data *sdata, + struct ieee80211_rx_data *rx, + struct sk_buff *skb) +{ + ieee80211_rx_handler *handler; + ieee80211_rx_result res = RX_DROP_MONITOR; + + rx->skb = skb; + rx->sdata = sdata; + rx->dev = sdata->dev; + + for (handler = ieee80211_rx_handlers; *handler != NULL; handler++) { + res = (*handler)(rx); + + switch (res) { + case RX_CONTINUE: + continue; + case RX_DROP_UNUSABLE: + case RX_DROP_MONITOR: + I802_DEBUG_INC(sdata->local->rx_handlers_drop); + if (rx->sta) + rx->sta->rx_dropped++; + break; + case RX_QUEUED: + I802_DEBUG_INC(sdata->local->rx_handlers_queued); + break; + } + break; + } + + switch (res) { + case RX_CONTINUE: + case RX_DROP_MONITOR: + ieee80211_rx_cooked_monitor(rx); + break; + case RX_DROP_UNUSABLE: + dev_kfree_skb(rx->skb); + break; + } +} + /* main receive path */ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, - u8 *bssid, struct ieee80211_txrx_data *rx, + u8 *bssid, struct ieee80211_rx_data *rx, struct ieee80211_hdr *hdr) { int multicast = is_multicast_ether_addr(hdr->addr1); @@ -1635,34 +1787,47 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, if (!bssid) return 0; if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) { - if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN)) + if (!(rx->flags & IEEE80211_RX_IN_SCAN)) return 0; - rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH; + rx->flags &= ~IEEE80211_RX_RA_MATCH; } else if (!multicast && compare_ether_addr(sdata->dev->dev_addr, hdr->addr1) != 0) { if (!(sdata->dev->flags & IFF_PROMISC)) return 0; - rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH; + rx->flags &= ~IEEE80211_RX_RA_MATCH; } break; case IEEE80211_IF_TYPE_IBSS: if (!bssid) return 0; - if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) { - if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN)) + if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT && + (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON) + return 1; + else if (!ieee80211_bssid_match(bssid, sdata->u.sta.bssid)) { + if (!(rx->flags & IEEE80211_RX_IN_SCAN)) return 0; - rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH; + rx->flags &= ~IEEE80211_RX_RA_MATCH; } else if (!multicast && compare_ether_addr(sdata->dev->dev_addr, hdr->addr1) != 0) { if (!(sdata->dev->flags & IFF_PROMISC)) return 0; - rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH; + rx->flags &= ~IEEE80211_RX_RA_MATCH; } else if (!rx->sta) rx->sta = ieee80211_ibss_add_sta(sdata->dev, rx->skb, bssid, hdr->addr2); break; + case IEEE80211_IF_TYPE_MESH_POINT: + if (!multicast && + compare_ether_addr(sdata->dev->dev_addr, + hdr->addr1) != 0) { + if (!(sdata->dev->flags & IFF_PROMISC)) + return 0; + + rx->flags &= ~IEEE80211_RX_RA_MATCH; + } + break; case IEEE80211_IF_TYPE_VLAN: case IEEE80211_IF_TYPE_AP: if (!bssid) { @@ -1671,12 +1836,12 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, return 0; } else if (!ieee80211_bssid_match(bssid, sdata->dev->dev_addr)) { - if (!(rx->flags & IEEE80211_TXRXD_RXIN_SCAN)) + if (!(rx->flags & IEEE80211_RX_IN_SCAN)) return 0; - rx->flags &= ~IEEE80211_TXRXD_RXRA_MATCH; + rx->flags &= ~IEEE80211_RX_RA_MATCH; } if (sdata->dev == sdata->local->mdev && - !(rx->flags & IEEE80211_TXRXD_RXIN_SCAN)) + !(rx->flags & IEEE80211_RX_IN_SCAN)) /* do not receive anything via * master device when not scanning */ return 0; @@ -1707,13 +1872,13 @@ static int prepare_for_handlers(struct ieee80211_sub_if_data *sdata, static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, struct sk_buff *skb, struct ieee80211_rx_status *status, - u32 load) + u32 load, + struct ieee80211_rate *rate) { struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_sub_if_data *sdata; - struct sta_info *sta; struct ieee80211_hdr *hdr; - struct ieee80211_txrx_data rx; + struct ieee80211_rx_data rx; u16 type; int prepares; struct ieee80211_sub_if_data *prev = NULL; @@ -1725,42 +1890,33 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, rx.skb = skb; rx.local = local; - rx.u.rx.status = status; - rx.u.rx.load = load; + rx.status = status; + rx.load = load; + rx.rate = rate; rx.fc = le16_to_cpu(hdr->frame_control); type = rx.fc & IEEE80211_FCTL_FTYPE; if (type == IEEE80211_FTYPE_DATA || type == IEEE80211_FTYPE_MGMT) local->dot11ReceivedFragmentCount++; - sta = rx.sta = sta_info_get(local, hdr->addr2); - if (sta) { - rx.dev = rx.sta->dev; - rx.sdata = IEEE80211_DEV_TO_SUB_IF(rx.dev); + rx.sta = sta_info_get(local, hdr->addr2); + if (rx.sta) { + rx.sdata = rx.sta->sdata; + rx.dev = rx.sta->sdata->dev; } if ((status->flag & RX_FLAG_MMIC_ERROR)) { - ieee80211_rx_michael_mic_report(local->mdev, hdr, sta, &rx); - goto end; + ieee80211_rx_michael_mic_report(local->mdev, hdr, &rx); + return; } if (unlikely(local->sta_sw_scanning || local->sta_hw_scanning)) - rx.flags |= IEEE80211_TXRXD_RXIN_SCAN; + rx.flags |= IEEE80211_RX_IN_SCAN; - if (__ieee80211_invoke_rx_handlers(local, local->rx_pre_handlers, &rx, - sta) != TXRX_CONTINUE) - goto end; - skb = rx.skb; + ieee80211_parse_qos(&rx); + ieee80211_verify_ip_alignment(&rx); - if (sta && !(sta->flags & (WLAN_STA_WDS | WLAN_STA_ASSOC_AP)) && - !atomic_read(&local->iff_promiscs) && - !is_multicast_ether_addr(hdr->addr1)) { - rx.flags |= IEEE80211_TXRXD_RXRA_MATCH; - ieee80211_invoke_rx_handlers(local, local->rx_handlers, &rx, - rx.sta); - sta_info_put(sta); - return; - } + skb = rx.skb; list_for_each_entry_rcu(sdata, &local->interfaces, list) { if (!netif_running(sdata->dev)) @@ -1770,10 +1926,8 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, continue; bssid = ieee80211_get_bssid(hdr, skb->len, sdata->vif.type); - rx.flags |= IEEE80211_TXRXD_RXRA_MATCH; + rx.flags |= IEEE80211_RX_RA_MATCH; prepares = prepare_for_handlers(sdata, bssid, &rx, hdr); - /* prepare_for_handlers can change sta */ - sta = rx.sta; if (!prepares) continue; @@ -1804,26 +1958,14 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, continue; } rx.fc = le16_to_cpu(hdr->frame_control); - rx.skb = skb_new; - rx.dev = prev->dev; - rx.sdata = prev; - ieee80211_invoke_rx_handlers(local, local->rx_handlers, - &rx, sta); + ieee80211_invoke_rx_handlers(prev, &rx, skb_new); prev = sdata; } if (prev) { rx.fc = le16_to_cpu(hdr->frame_control); - rx.skb = skb; - rx.dev = prev->dev; - rx.sdata = prev; - ieee80211_invoke_rx_handlers(local, local->rx_handlers, - &rx, sta); + ieee80211_invoke_rx_handlers(prev, &rx, skb); } else dev_kfree_skb(skb); - - end: - if (sta) - sta_info_put(sta); } #define SEQ_MODULO 0x1000 @@ -1859,6 +2001,8 @@ u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw, u16 head_seq_num, buf_size; int index; u32 pkt_load; + struct ieee80211_supported_band *sband; + struct ieee80211_rate *rate; buf_size = tid_agg_rx->buf_size; head_seq_num = tid_agg_rx->head_seq_num; @@ -1889,12 +2033,14 @@ u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw, memcpy(&status, tid_agg_rx->reorder_buf[index]->cb, sizeof(status)); + sband = local->hw.wiphy->bands[status.band]; + rate = &sband->bitrates[status.rate_idx]; pkt_load = ieee80211_rx_load_stats(local, tid_agg_rx->reorder_buf[index], - &status); + &status, rate); __ieee80211_rx_handle_packet(hw, tid_agg_rx->reorder_buf[index], - &status, pkt_load); + &status, pkt_load, rate); tid_agg_rx->stored_mpdu_num--; tid_agg_rx->reorder_buf[index] = NULL; } @@ -1934,11 +2080,13 @@ u8 ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw, /* release the reordered frame back to stack */ memcpy(&status, tid_agg_rx->reorder_buf[index]->cb, sizeof(status)); + sband = local->hw.wiphy->bands[status.band]; + rate = &sband->bitrates[status.rate_idx]; pkt_load = ieee80211_rx_load_stats(local, tid_agg_rx->reorder_buf[index], - &status); + &status, rate); __ieee80211_rx_handle_packet(hw, tid_agg_rx->reorder_buf[index], - &status, pkt_load); + &status, pkt_load, rate); tid_agg_rx->stored_mpdu_num--; tid_agg_rx->reorder_buf[index] = NULL; tid_agg_rx->head_seq_num = seq_inc(tid_agg_rx->head_seq_num); @@ -1973,11 +2121,12 @@ static u8 ieee80211_rx_reorder_ampdu(struct ieee80211_local *local, qc = skb->data + ieee80211_get_hdrlen(fc) - QOS_CONTROL_LEN; tid = qc[0] & QOS_CONTROL_TID_MASK; - tid_agg_rx = &(sta->ampdu_mlme.tid_rx[tid]); - if (tid_agg_rx->state != HT_AGG_STATE_OPERATIONAL) + if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL) goto end_reorder; + tid_agg_rx = sta->ampdu_mlme.tid_rx[tid]; + /* null data frames are excluded */ if (unlikely(fc & IEEE80211_STYPE_NULLFUNC)) goto end_reorder; @@ -1994,7 +2143,7 @@ static u8 ieee80211_rx_reorder_ampdu(struct ieee80211_local *local, /* if this mpdu is fragmented - terminate rx aggregation session */ sc = le16_to_cpu(hdr->seq_ctrl); if (sc & IEEE80211_SCTL_FRAG) { - ieee80211_sta_stop_rx_ba_session(sta->dev, sta->addr, + ieee80211_sta_stop_rx_ba_session(sta->sdata->dev, sta->addr, tid, 0, WLAN_REASON_QSTA_REQUIRE_SETUP); ret = 1; goto end_reorder; @@ -2004,9 +2153,7 @@ static u8 ieee80211_rx_reorder_ampdu(struct ieee80211_local *local, mpdu_seq_num = (sc & IEEE80211_SCTL_SEQ) >> 4; ret = ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, skb, mpdu_seq_num, 0); -end_reorder: - if (sta) - sta_info_put(sta); + end_reorder: return ret; } @@ -2019,6 +2166,25 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, { struct ieee80211_local *local = hw_to_local(hw); u32 pkt_load; + struct ieee80211_rate *rate = NULL; + struct ieee80211_supported_band *sband; + + if (status->band < 0 || + status->band > IEEE80211_NUM_BANDS) { + WARN_ON(1); + return; + } + + sband = local->hw.wiphy->bands[status->band]; + + if (!sband || + status->rate_idx < 0 || + status->rate_idx >= sband->n_bitrates) { + WARN_ON(1); + return; + } + + rate = &sband->bitrates[status->rate_idx]; /* * key references and virtual interfaces are protected using RCU @@ -2033,17 +2199,17 @@ void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, * if it was previously present. * Also, frames with less than 16 bytes are dropped. */ - skb = ieee80211_rx_monitor(local, skb, status); + skb = ieee80211_rx_monitor(local, skb, status, rate); if (!skb) { rcu_read_unlock(); return; } - pkt_load = ieee80211_rx_load_stats(local, skb, status); + pkt_load = ieee80211_rx_load_stats(local, skb, status, rate); local->channel_use_raw += pkt_load; if (!ieee80211_rx_reorder_ampdu(local, skb)) - __ieee80211_rx_handle_packet(hw, skb, status, pkt_load); + __ieee80211_rx_handle_packet(hw, skb, status, pkt_load, rate); rcu_read_unlock(); } diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 1f74bd2..7d4fe4a 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -15,21 +15,57 @@ #include <linux/skbuff.h> #include <linux/if_arp.h> #include <linux/timer.h> +#include <linux/rtnetlink.h> #include <net/mac80211.h> #include "ieee80211_i.h" -#include "ieee80211_rate.h" +#include "rate.h" #include "sta_info.h" #include "debugfs_sta.h" +#include "mesh.h" -/* Caller must hold local->sta_lock */ -static void sta_info_hash_add(struct ieee80211_local *local, - struct sta_info *sta) -{ - sta->hnext = local->sta_hash[STA_HASH(sta->addr)]; - local->sta_hash[STA_HASH(sta->addr)] = sta; -} - +/** + * DOC: STA information lifetime rules + * + * STA info structures (&struct sta_info) are managed in a hash table + * for faster lookup and a list for iteration. They are managed using + * RCU, i.e. access to the list and hash table is protected by RCU. + * + * Upon allocating a STA info structure with sta_info_alloc(), the caller owns + * that structure. It must then either destroy it using sta_info_destroy() + * (which is pretty useless) or insert it into the hash table using + * sta_info_insert() which demotes the reference from ownership to a regular + * RCU-protected reference; if the function is called without protection by an + * RCU critical section the reference is instantly invalidated. Note that the + * caller may not do much with the STA info before inserting it, in particular, + * it may not start any mesh peer link management or add encryption keys. + * + * When the insertion fails (sta_info_insert()) returns non-zero), the + * structure will have been freed by sta_info_insert()! + * + * Because there are debugfs entries for each station, and adding those + * must be able to sleep, it is also possible to "pin" a station entry, + * that means it can be removed from the hash table but not be freed. + * See the comment in __sta_info_unlink() for more information, this is + * an internal capability only. + * + * In order to remove a STA info structure, the caller needs to first + * unlink it (sta_info_unlink()) from the list and hash tables and + * then destroy it; sta_info_destroy() will wait for an RCU grace period + * to elapse before actually freeing it. Due to the pinning and the + * possibility of multiple callers trying to remove the same STA info at + * the same time, sta_info_unlink() can clear the STA info pointer it is + * passed to indicate that the STA info is owned by somebody else now. + * + * If sta_info_unlink() did not clear the pointer then the caller owns + * the STA info structure now and is responsible of destroying it with + * a call to sta_info_destroy(). + * + * In all other cases, there is no concept of ownership on a STA entry, + * each structure is owned by the global hash table/list until it is + * removed. All users of the structure need to be RCU protected so that + * the structure won't be freed before they are done using it. + */ /* Caller must hold local->sta_lock */ static int sta_info_hash_del(struct ieee80211_local *local, @@ -41,237 +77,439 @@ static int sta_info_hash_del(struct ieee80211_local *local, if (!s) return -ENOENT; if (s == sta) { - local->sta_hash[STA_HASH(sta->addr)] = s->hnext; + rcu_assign_pointer(local->sta_hash[STA_HASH(sta->addr)], + s->hnext); return 0; } while (s->hnext && s->hnext != sta) s = s->hnext; if (s->hnext) { - s->hnext = sta->hnext; + rcu_assign_pointer(s->hnext, sta->hnext); return 0; } return -ENOENT; } -struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr) +/* protected by RCU */ +static struct sta_info *__sta_info_find(struct ieee80211_local *local, + u8 *addr) { struct sta_info *sta; - read_lock_bh(&local->sta_lock); - sta = local->sta_hash[STA_HASH(addr)]; + sta = rcu_dereference(local->sta_hash[STA_HASH(addr)]); while (sta) { - if (memcmp(sta->addr, addr, ETH_ALEN) == 0) { - __sta_info_get(sta); + if (compare_ether_addr(sta->addr, addr) == 0) break; - } - sta = sta->hnext; + sta = rcu_dereference(sta->hnext); } - read_unlock_bh(&local->sta_lock); - return sta; } + +struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr) +{ + return __sta_info_find(local, addr); +} EXPORT_SYMBOL(sta_info_get); -int sta_info_min_txrate_get(struct ieee80211_local *local) +struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx, + struct net_device *dev) { struct sta_info *sta; - struct ieee80211_hw_mode *mode; - int min_txrate = 9999999; - int i; - - read_lock_bh(&local->sta_lock); - mode = local->oper_hw_mode; - for (i = 0; i < STA_HASH_SIZE; i++) { - sta = local->sta_hash[i]; - while (sta) { - if (sta->txrate < min_txrate) - min_txrate = sta->txrate; - sta = sta->hnext; + int i = 0; + + list_for_each_entry_rcu(sta, &local->sta_list, list) { + if (dev && dev != sta->sdata->dev) + continue; + if (i < idx) { + ++i; + continue; } + return sta; } - read_unlock_bh(&local->sta_lock); - if (min_txrate == 9999999) - min_txrate = 0; - return mode->rates[min_txrate].rate; + return NULL; } +/** + * __sta_info_free - internal STA free helper + * + * @sta: STA info to free + * + * This function must undo everything done by sta_info_alloc() + * that may happen before sta_info_insert(). + */ +static void __sta_info_free(struct ieee80211_local *local, + struct sta_info *sta) +{ + DECLARE_MAC_BUF(mbuf); + + rate_control_free_sta(sta->rate_ctrl, sta->rate_ctrl_priv); + rate_control_put(sta->rate_ctrl); + +#ifdef CONFIG_MAC80211_VERBOSE_DEBUG + printk(KERN_DEBUG "%s: Destroyed STA %s\n", + wiphy_name(local->hw.wiphy), print_mac(mbuf, sta->addr)); +#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ -static void sta_info_release(struct kref *kref) + kfree(sta); +} + +void sta_info_destroy(struct sta_info *sta) { - struct sta_info *sta = container_of(kref, struct sta_info, kref); - struct ieee80211_local *local = sta->local; + struct ieee80211_local *local; struct sk_buff *skb; int i; - /* free sta structure; it has already been removed from - * hash table etc. external structures. Make sure that all - * buffered frames are release (one might have been added - * after sta_info_free() was called). */ + might_sleep(); + + if (!sta) + return; + + local = sta->local; + + rate_control_remove_sta_debugfs(sta); + ieee80211_sta_debugfs_remove(sta); + +#ifdef CONFIG_MAC80211_MESH + if (ieee80211_vif_is_mesh(&sta->sdata->vif)) + mesh_plink_deactivate(sta); +#endif + + /* + * We have only unlinked the key, and actually destroying it + * may mean it is removed from hardware which requires that + * the key->sta pointer is still valid, so flush the key todo + * list here. + * + * ieee80211_key_todo() will synchronize_rcu() so after this + * nothing can reference this sta struct any more. + */ + ieee80211_key_todo(); + +#ifdef CONFIG_MAC80211_MESH + if (ieee80211_vif_is_mesh(&sta->sdata->vif)) + del_timer_sync(&sta->plink_timer); +#endif + while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) { local->total_ps_buffered--; dev_kfree_skb_any(skb); } - while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) { + + while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) dev_kfree_skb_any(skb); + + for (i = 0; i < STA_TID_NUM; i++) { + spin_lock_bh(&sta->ampdu_mlme.ampdu_rx); + if (sta->ampdu_mlme.tid_rx[i]) + del_timer_sync(&sta->ampdu_mlme.tid_rx[i]->session_timer); + spin_unlock_bh(&sta->ampdu_mlme.ampdu_rx); + spin_lock_bh(&sta->ampdu_mlme.ampdu_tx); + if (sta->ampdu_mlme.tid_tx[i]) + del_timer_sync(&sta->ampdu_mlme.tid_tx[i]->addba_resp_timer); + spin_unlock_bh(&sta->ampdu_mlme.ampdu_tx); } - for (i = 0; i < STA_TID_NUM; i++) - del_timer_sync(&sta->ampdu_mlme.tid_rx[i].session_timer); - rate_control_free_sta(sta->rate_ctrl, sta->rate_ctrl_priv); - rate_control_put(sta->rate_ctrl); - kfree(sta); + + __sta_info_free(local, sta); } -void sta_info_put(struct sta_info *sta) +/* Caller must hold local->sta_lock */ +static void sta_info_hash_add(struct ieee80211_local *local, + struct sta_info *sta) { - kref_put(&sta->kref, sta_info_release); + sta->hnext = local->sta_hash[STA_HASH(sta->addr)]; + rcu_assign_pointer(local->sta_hash[STA_HASH(sta->addr)], sta); } -EXPORT_SYMBOL(sta_info_put); - -struct sta_info * sta_info_add(struct ieee80211_local *local, - struct net_device *dev, u8 *addr, gfp_t gfp) +struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, + u8 *addr, gfp_t gfp) { + struct ieee80211_local *local = sdata->local; struct sta_info *sta; int i; - DECLARE_MAC_BUF(mac); + DECLARE_MAC_BUF(mbuf); sta = kzalloc(sizeof(*sta), gfp); if (!sta) return NULL; - kref_init(&sta->kref); + memcpy(sta->addr, addr, ETH_ALEN); + sta->local = local; + sta->sdata = sdata; sta->rate_ctrl = rate_control_get(local->rate_ctrl); - sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, gfp); + sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl, + gfp); if (!sta->rate_ctrl_priv) { rate_control_put(sta->rate_ctrl); kfree(sta); return NULL; } - memcpy(sta->addr, addr, ETH_ALEN); - sta->local = local; - sta->dev = dev; spin_lock_init(&sta->ampdu_mlme.ampdu_rx); + spin_lock_init(&sta->ampdu_mlme.ampdu_tx); for (i = 0; i < STA_TID_NUM; i++) { /* timer_to_tid must be initialized with identity mapping to * enable session_timer's data differentiation. refer to * sta_rx_agg_session_timer_expired for useage */ sta->timer_to_tid[i] = i; - /* rx timers */ - sta->ampdu_mlme.tid_rx[i].session_timer.function = - sta_rx_agg_session_timer_expired; - sta->ampdu_mlme.tid_rx[i].session_timer.data = - (unsigned long)&sta->timer_to_tid[i]; - init_timer(&sta->ampdu_mlme.tid_rx[i].session_timer); + /* tid to tx queue: initialize according to HW (0 is valid) */ + sta->tid_to_tx_q[i] = local->hw.queues; + /* rx */ + sta->ampdu_mlme.tid_state_rx[i] = HT_AGG_STATE_IDLE; + sta->ampdu_mlme.tid_rx[i] = NULL; + /* tx */ + sta->ampdu_mlme.tid_state_tx[i] = HT_AGG_STATE_IDLE; + sta->ampdu_mlme.tid_tx[i] = NULL; + sta->ampdu_mlme.addba_req_num[i] = 0; } skb_queue_head_init(&sta->ps_tx_buf); skb_queue_head_init(&sta->tx_filtered); - __sta_info_get(sta); /* sta used by caller, decremented by - * sta_info_put() */ - write_lock_bh(&local->sta_lock); + +#ifdef CONFIG_MAC80211_VERBOSE_DEBUG + printk(KERN_DEBUG "%s: Allocated STA %s\n", + wiphy_name(local->hw.wiphy), print_mac(mbuf, sta->addr)); +#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ + +#ifdef CONFIG_MAC80211_MESH + sta->plink_state = PLINK_LISTEN; + spin_lock_init(&sta->plink_lock); + init_timer(&sta->plink_timer); +#endif + + return sta; +} + +int sta_info_insert(struct sta_info *sta) +{ + struct ieee80211_local *local = sta->local; + struct ieee80211_sub_if_data *sdata = sta->sdata; + unsigned long flags; + int err = 0; + DECLARE_MAC_BUF(mac); + + /* + * Can't be a WARN_ON because it can be triggered through a race: + * something inserts a STA (on one CPU) without holding the RTNL + * and another CPU turns off the net device. + */ + if (unlikely(!netif_running(sdata->dev))) { + err = -ENETDOWN; + goto out_free; + } + + if (WARN_ON(compare_ether_addr(sta->addr, sdata->dev->dev_addr) == 0 || + is_multicast_ether_addr(sta->addr))) { + err = -EINVAL; + goto out_free; + } + + spin_lock_irqsave(&local->sta_lock, flags); + /* check if STA exists already */ + if (__sta_info_find(local, sta->addr)) { + spin_unlock_irqrestore(&local->sta_lock, flags); + err = -EEXIST; + goto out_free; + } list_add(&sta->list, &local->sta_list); local->num_sta++; sta_info_hash_add(local, sta); - if (local->ops->sta_notify) { - struct ieee80211_sub_if_data *sdata; - sdata = IEEE80211_DEV_TO_SUB_IF(dev); + /* notify driver */ + if (local->ops->sta_notify) { if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN) sdata = sdata->u.vlan.ap; local->ops->sta_notify(local_to_hw(local), &sdata->vif, - STA_NOTIFY_ADD, addr); + STA_NOTIFY_ADD, sta->addr); } - write_unlock_bh(&local->sta_lock); #ifdef CONFIG_MAC80211_VERBOSE_DEBUG - printk(KERN_DEBUG "%s: Added STA %s\n", - wiphy_name(local->hw.wiphy), print_mac(mac, addr)); + printk(KERN_DEBUG "%s: Inserted STA %s\n", + wiphy_name(local->hw.wiphy), print_mac(mac, sta->addr)); #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ + spin_unlock_irqrestore(&local->sta_lock, flags); + #ifdef CONFIG_MAC80211_DEBUGFS - /* debugfs entry adding might sleep, so schedule process + /* + * Debugfs entry adding might sleep, so schedule process * context task for adding entry for STAs that do not yet - * have one. */ - queue_work(local->hw.workqueue, &local->sta_debugfs_add); + * have one. + * NOTE: due to auto-freeing semantics this may only be done + * if the insertion is successful! + */ + schedule_work(&local->sta_debugfs_add); #endif - return sta; + if (ieee80211_vif_is_mesh(&sdata->vif)) + mesh_accept_plinks_update(sdata); + + return 0; + out_free: + BUG_ON(!err); + __sta_info_free(local, sta); + return err; } -/* Caller must hold local->sta_lock */ -void sta_info_remove(struct sta_info *sta) +static inline void __bss_tim_set(struct ieee80211_if_ap *bss, u16 aid) { - struct ieee80211_local *local = sta->local; - struct ieee80211_sub_if_data *sdata; + /* + * This format has been mandated by the IEEE specifications, + * so this line may not be changed to use the __set_bit() format. + */ + bss->tim[aid / 8] |= (1 << (aid % 8)); +} - /* don't do anything if we've been removed already */ - if (sta_info_hash_del(local, sta)) - return; +static inline void __bss_tim_clear(struct ieee80211_if_ap *bss, u16 aid) +{ + /* + * This format has been mandated by the IEEE specifications, + * so this line may not be changed to use the __clear_bit() format. + */ + bss->tim[aid / 8] &= ~(1 << (aid % 8)); +} - list_del(&sta->list); - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); - if (sta->flags & WLAN_STA_PS) { - sta->flags &= ~WLAN_STA_PS; - if (sdata->bss) - atomic_dec(&sdata->bss->num_sta_ps); +static void __sta_info_set_tim_bit(struct ieee80211_if_ap *bss, + struct sta_info *sta) +{ + if (bss) + __bss_tim_set(bss, sta->aid); + if (sta->local->ops->set_tim) { + sta->local->tim_in_locked_section = true; + sta->local->ops->set_tim(local_to_hw(sta->local), sta->aid, 1); + sta->local->tim_in_locked_section = false; } - local->num_sta--; - sta_info_remove_aid_ptr(sta); +} + +void sta_info_set_tim_bit(struct sta_info *sta) +{ + unsigned long flags; + spin_lock_irqsave(&sta->local->sta_lock, flags); + __sta_info_set_tim_bit(sta->sdata->bss, sta); + spin_unlock_irqrestore(&sta->local->sta_lock, flags); } -void sta_info_free(struct sta_info *sta) +static void __sta_info_clear_tim_bit(struct ieee80211_if_ap *bss, + struct sta_info *sta) { - struct sk_buff *skb; - struct ieee80211_local *local = sta->local; - DECLARE_MAC_BUF(mac); + if (bss) + __bss_tim_clear(bss, sta->aid); + if (sta->local->ops->set_tim) { + sta->local->tim_in_locked_section = true; + sta->local->ops->set_tim(local_to_hw(sta->local), sta->aid, 0); + sta->local->tim_in_locked_section = false; + } +} - might_sleep(); +void sta_info_clear_tim_bit(struct sta_info *sta) +{ + unsigned long flags; - write_lock_bh(&local->sta_lock); - sta_info_remove(sta); - write_unlock_bh(&local->sta_lock); + spin_lock_irqsave(&sta->local->sta_lock, flags); + __sta_info_clear_tim_bit(sta->sdata->bss, sta); + spin_unlock_irqrestore(&sta->local->sta_lock, flags); +} - while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) { - local->total_ps_buffered--; - dev_kfree_skb(skb); - } - while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) { - dev_kfree_skb(skb); +void __sta_info_unlink(struct sta_info **sta) +{ + struct ieee80211_local *local = (*sta)->local; + struct ieee80211_sub_if_data *sdata = (*sta)->sdata; +#ifdef CONFIG_MAC80211_VERBOSE_DEBUG + DECLARE_MAC_BUF(mbuf); +#endif + /* + * pull caller's reference if we're already gone. + */ + if (sta_info_hash_del(local, *sta)) { + *sta = NULL; + return; } -#ifdef CONFIG_MAC80211_VERBOSE_DEBUG - printk(KERN_DEBUG "%s: Removed STA %s\n", - wiphy_name(local->hw.wiphy), print_mac(mac, sta->addr)); -#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ + if ((*sta)->key) { + ieee80211_key_free((*sta)->key); + WARN_ON((*sta)->key); + } - ieee80211_key_free(sta->key); - sta->key = NULL; + list_del(&(*sta)->list); - if (local->ops->sta_notify) { - struct ieee80211_sub_if_data *sdata; + if ((*sta)->flags & WLAN_STA_PS) { + (*sta)->flags &= ~WLAN_STA_PS; + if (sdata->bss) + atomic_dec(&sdata->bss->num_sta_ps); + __sta_info_clear_tim_bit(sdata->bss, *sta); + } - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); + local->num_sta--; + if (local->ops->sta_notify) { if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN) sdata = sdata->u.vlan.ap; local->ops->sta_notify(local_to_hw(local), &sdata->vif, - STA_NOTIFY_REMOVE, sta->addr); + STA_NOTIFY_REMOVE, (*sta)->addr); } - rate_control_remove_sta_debugfs(sta); - ieee80211_sta_debugfs_remove(sta); + if (ieee80211_vif_is_mesh(&sdata->vif)) { + mesh_accept_plinks_update(sdata); +#ifdef CONFIG_MAC80211_MESH + del_timer(&(*sta)->plink_timer); +#endif + } - sta_info_put(sta); +#ifdef CONFIG_MAC80211_VERBOSE_DEBUG + printk(KERN_DEBUG "%s: Removed STA %s\n", + wiphy_name(local->hw.wiphy), print_mac(mbuf, (*sta)->addr)); +#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ + + /* + * Finally, pull caller's reference if the STA is pinned by the + * task that is adding the debugfs entries. In that case, we + * leave the STA "to be freed". + * + * The rules are not trivial, but not too complex either: + * (1) pin_status is only modified under the sta_lock + * (2) STAs may only be pinned under the RTNL so that + * sta_info_flush() is guaranteed to actually destroy + * all STAs that are active for a given interface, this + * is required for correctness because otherwise we + * could notify a driver that an interface is going + * away and only after that (!) notify it about a STA + * on that interface going away. + * (3) sta_info_debugfs_add_work() will set the status + * to PINNED when it found an item that needs a new + * debugfs directory created. In that case, that item + * must not be freed although all *RCU* users are done + * with it. Hence, we tell the caller of _unlink() + * that the item is already gone (as can happen when + * two tasks try to unlink/destroy at the same time) + * (4) We set the pin_status to DESTROY here when we + * find such an item. + * (5) sta_info_debugfs_add_work() will reset the pin_status + * from PINNED to NORMAL when it is done with the item, + * but will check for DESTROY before resetting it in + * which case it will free the item. + */ + if ((*sta)->pin_status == STA_INFO_PIN_STAT_PINNED) { + (*sta)->pin_status = STA_INFO_PIN_STAT_DESTROY; + *sta = NULL; + return; + } } +void sta_info_unlink(struct sta_info **sta) +{ + struct ieee80211_local *local = (*sta)->local; + unsigned long flags; + + spin_lock_irqsave(&local->sta_lock, flags); + __sta_info_unlink(sta); + spin_unlock_irqrestore(&local->sta_lock, flags); +} static inline int sta_info_buffer_expired(struct ieee80211_local *local, struct sta_info *sta, @@ -299,6 +537,7 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local, { unsigned long flags; struct sk_buff *skb; + struct ieee80211_sub_if_data *sdata; DECLARE_MAC_BUF(mac); if (skb_queue_empty(&sta->ps_tx_buf)) @@ -307,21 +546,23 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local, for (;;) { spin_lock_irqsave(&sta->ps_tx_buf.lock, flags); skb = skb_peek(&sta->ps_tx_buf); - if (sta_info_buffer_expired(local, sta, skb)) { + if (sta_info_buffer_expired(local, sta, skb)) skb = __skb_dequeue(&sta->ps_tx_buf); - if (skb_queue_empty(&sta->ps_tx_buf)) - sta->flags &= ~WLAN_STA_TIM; - } else + else skb = NULL; spin_unlock_irqrestore(&sta->ps_tx_buf.lock, flags); - if (skb) { - local->total_ps_buffered--; - printk(KERN_DEBUG "Buffered frame expired (STA " - "%s)\n", print_mac(mac, sta->addr)); - dev_kfree_skb(skb); - } else + if (!skb) break; + + sdata = sta->sdata; + local->total_ps_buffered--; + printk(KERN_DEBUG "Buffered frame expired (STA " + "%s)\n", print_mac(mac, sta->addr)); + dev_kfree_skb(skb); + + if (skb_queue_empty(&sta->ps_tx_buf)) + sta_info_clear_tim_bit(sta); } } @@ -331,13 +572,10 @@ static void sta_info_cleanup(unsigned long data) struct ieee80211_local *local = (struct ieee80211_local *) data; struct sta_info *sta; - read_lock_bh(&local->sta_lock); - list_for_each_entry(sta, &local->sta_list, list) { - __sta_info_get(sta); + rcu_read_lock(); + list_for_each_entry_rcu(sta, &local->sta_list, list) sta_info_cleanup_expire_buffered(local, sta); - sta_info_put(sta); - } - read_unlock_bh(&local->sta_lock); + rcu_read_unlock(); local->sta_cleanup.expires = round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL); @@ -345,38 +583,106 @@ static void sta_info_cleanup(unsigned long data) } #ifdef CONFIG_MAC80211_DEBUGFS -static void sta_info_debugfs_add_task(struct work_struct *work) +/* + * See comment in __sta_info_unlink, + * caller must hold local->sta_lock. + */ +static void __sta_info_pin(struct sta_info *sta) +{ + WARN_ON(sta->pin_status != STA_INFO_PIN_STAT_NORMAL); + sta->pin_status = STA_INFO_PIN_STAT_PINNED; +} + +/* + * See comment in __sta_info_unlink, returns sta if it + * needs to be destroyed. + */ +static struct sta_info *__sta_info_unpin(struct sta_info *sta) +{ + struct sta_info *ret = NULL; + unsigned long flags; + + spin_lock_irqsave(&sta->local->sta_lock, flags); + WARN_ON(sta->pin_status != STA_INFO_PIN_STAT_DESTROY && + sta->pin_status != STA_INFO_PIN_STAT_PINNED); + if (sta->pin_status == STA_INFO_PIN_STAT_DESTROY) + ret = sta; + sta->pin_status = STA_INFO_PIN_STAT_NORMAL; + spin_unlock_irqrestore(&sta->local->sta_lock, flags); + + return ret; +} + +static void sta_info_debugfs_add_work(struct work_struct *work) { struct ieee80211_local *local = container_of(work, struct ieee80211_local, sta_debugfs_add); struct sta_info *sta, *tmp; + unsigned long flags; + /* We need to keep the RTNL across the whole pinned status. */ + rtnl_lock(); while (1) { sta = NULL; - read_lock_bh(&local->sta_lock); + + spin_lock_irqsave(&local->sta_lock, flags); list_for_each_entry(tmp, &local->sta_list, list) { if (!tmp->debugfs.dir) { sta = tmp; - __sta_info_get(sta); + __sta_info_pin(sta); break; } } - read_unlock_bh(&local->sta_lock); + spin_unlock_irqrestore(&local->sta_lock, flags); if (!sta) break; ieee80211_sta_debugfs_add(sta); rate_control_add_sta_debugfs(sta); - sta_info_put(sta); + + sta = __sta_info_unpin(sta); + sta_info_destroy(sta); } + rtnl_unlock(); } #endif +static void __ieee80211_run_pending_flush(struct ieee80211_local *local) +{ + struct sta_info *sta; + unsigned long flags; + + ASSERT_RTNL(); + + spin_lock_irqsave(&local->sta_lock, flags); + while (!list_empty(&local->sta_flush_list)) { + sta = list_first_entry(&local->sta_flush_list, + struct sta_info, list); + list_del(&sta->list); + spin_unlock_irqrestore(&local->sta_lock, flags); + sta_info_destroy(sta); + spin_lock_irqsave(&local->sta_lock, flags); + } + spin_unlock_irqrestore(&local->sta_lock, flags); +} + +static void ieee80211_sta_flush_work(struct work_struct *work) +{ + struct ieee80211_local *local = + container_of(work, struct ieee80211_local, sta_flush_work); + + rtnl_lock(); + __ieee80211_run_pending_flush(local); + rtnl_unlock(); +} + void sta_info_init(struct ieee80211_local *local) { - rwlock_init(&local->sta_lock); + spin_lock_init(&local->sta_lock); INIT_LIST_HEAD(&local->sta_list); + INIT_LIST_HEAD(&local->sta_flush_list); + INIT_WORK(&local->sta_flush_work, ieee80211_sta_flush_work); setup_timer(&local->sta_cleanup, sta_info_cleanup, (unsigned long)local); @@ -384,7 +690,7 @@ void sta_info_init(struct ieee80211_local *local) round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL); #ifdef CONFIG_MAC80211_DEBUGFS - INIT_WORK(&local->sta_debugfs_add, sta_info_debugfs_add_task); + INIT_WORK(&local->sta_debugfs_add, sta_info_debugfs_add_work); #endif } @@ -397,47 +703,89 @@ int sta_info_start(struct ieee80211_local *local) void sta_info_stop(struct ieee80211_local *local) { del_timer(&local->sta_cleanup); + cancel_work_sync(&local->sta_flush_work); +#ifdef CONFIG_MAC80211_DEBUGFS + /* + * Make sure the debugfs adding work isn't pending after this + * because we're about to be destroyed. It doesn't matter + * whether it ran or not since we're going to flush all STAs + * anyway. + */ + cancel_work_sync(&local->sta_debugfs_add); +#endif + + rtnl_lock(); sta_info_flush(local, NULL); + __ieee80211_run_pending_flush(local); + rtnl_unlock(); } -void sta_info_remove_aid_ptr(struct sta_info *sta) +/** + * sta_info_flush - flush matching STA entries from the STA table + * + * Returns the number of removed STA entries. + * + * @local: local interface data + * @sdata: matching rule for the net device (sta->dev) or %NULL to match all STAs + */ +int sta_info_flush(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) { - struct ieee80211_sub_if_data *sdata; + struct sta_info *sta, *tmp; + LIST_HEAD(tmp_list); + int ret = 0; + unsigned long flags; - if (sta->aid <= 0) - return; + might_sleep(); + ASSERT_RTNL(); + + spin_lock_irqsave(&local->sta_lock, flags); + list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { + if (!sdata || sdata == sta->sdata) { + __sta_info_unlink(&sta); + if (sta) { + list_add_tail(&sta->list, &tmp_list); + ret++; + } + } + } + spin_unlock_irqrestore(&local->sta_lock, flags); - sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev); + list_for_each_entry_safe(sta, tmp, &tmp_list, list) + sta_info_destroy(sta); - if (sdata->local->ops->set_tim) - sdata->local->ops->set_tim(local_to_hw(sdata->local), - sta->aid, 0); - if (sdata->bss) - __bss_tim_clear(sdata->bss, sta->aid); + return ret; } - /** - * sta_info_flush - flush matching STA entries from the STA table - * @local: local interface data - * @dev: matching rule for the net device (sta->dev) or %NULL to match all STAs + * sta_info_flush_delayed - flush matching STA entries from the STA table + * + * This function unlinks all stations for a given interface and queues + * them for freeing. Note that the workqueue function scheduled here has + * to run before any new keys can be added to the system to avoid set_key() + * callback ordering issues. + * + * @sdata: the interface */ -void sta_info_flush(struct ieee80211_local *local, struct net_device *dev) +void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata) { + struct ieee80211_local *local = sdata->local; struct sta_info *sta, *tmp; - LIST_HEAD(tmp_list); - - write_lock_bh(&local->sta_lock); - list_for_each_entry_safe(sta, tmp, &local->sta_list, list) - if (!dev || dev == sta->dev) { - __sta_info_get(sta); - sta_info_remove(sta); - list_add_tail(&sta->list, &tmp_list); + unsigned long flags; + bool work = false; + + spin_lock_irqsave(&local->sta_lock, flags); + list_for_each_entry_safe(sta, tmp, &local->sta_list, list) { + if (sdata == sta->sdata) { + __sta_info_unlink(&sta); + if (sta) { + list_add_tail(&sta->list, + &local->sta_flush_list); + work = true; + } } - write_unlock_bh(&local->sta_lock); - - list_for_each_entry_safe(sta, tmp, &tmp_list, list) { - sta_info_free(sta); - sta_info_put(sta); } + if (work) + schedule_work(&local->sta_flush_work); + spin_unlock_irqrestore(&local->sta_lock, flags); } diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index 96fe3ed..f8c95bc 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -12,160 +12,293 @@ #include <linux/list.h> #include <linux/types.h> #include <linux/if_ether.h> -#include <linux/kref.h> -#include "ieee80211_key.h" - -/* Stations flags (struct sta_info::flags) */ -#define WLAN_STA_AUTH BIT(0) -#define WLAN_STA_ASSOC BIT(1) -#define WLAN_STA_PS BIT(2) -#define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */ -#define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */ -#define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is - * controlling whether STA is authorized to - * send and receive non-IEEE 802.1X frames - */ -#define WLAN_STA_SHORT_PREAMBLE BIT(7) -/* whether this is an AP that we are associated with as a client */ -#define WLAN_STA_ASSOC_AP BIT(8) -#define WLAN_STA_WME BIT(9) -#define WLAN_STA_WDS BIT(27) +#include "key.h" + +/** + * enum ieee80211_sta_info_flags - Stations flags + * + * These flags are used with &struct sta_info's @flags member. + * + * @WLAN_STA_AUTH: Station is authenticated. + * @WLAN_STA_ASSOC: Station is associated. + * @WLAN_STA_PS: Station is in power-save mode + * @WLAN_STA_AUTHORIZED: Station is authorized to send/receive traffic. + * This bit is always checked so needs to be enabled for all stations + * when virtual port control is not in use. + * @WLAN_STA_SHORT_PREAMBLE: Station is capable of receiving short-preamble + * frames. + * @WLAN_STA_ASSOC_AP: We're associated to that station, it is an AP. + * @WLAN_STA_WME: Station is a QoS-STA. + * @WLAN_STA_WDS: Station is one of our WDS peers. + * @WLAN_STA_PSPOLL: Station has just PS-polled us. + * @WLAN_STA_CLEAR_PS_FILT: Clear PS filter in hardware (using the + * IEEE80211_TXCTL_CLEAR_PS_FILT control flag) when the next + * frame to this station is transmitted. + */ +enum ieee80211_sta_info_flags { + WLAN_STA_AUTH = 1<<0, + WLAN_STA_ASSOC = 1<<1, + WLAN_STA_PS = 1<<2, + WLAN_STA_AUTHORIZED = 1<<3, + WLAN_STA_SHORT_PREAMBLE = 1<<4, + WLAN_STA_ASSOC_AP = 1<<5, + WLAN_STA_WME = 1<<6, + WLAN_STA_WDS = 1<<7, + WLAN_STA_PSPOLL = 1<<8, + WLAN_STA_CLEAR_PS_FILT = 1<<9, +}; #define STA_TID_NUM 16 #define ADDBA_RESP_INTERVAL HZ +#define HT_AGG_MAX_RETRIES (0x3) #define HT_AGG_STATE_INITIATOR_SHIFT (4) +#define HT_ADDBA_REQUESTED_MSK BIT(0) +#define HT_ADDBA_DRV_READY_MSK BIT(1) +#define HT_ADDBA_RECEIVED_MSK BIT(2) #define HT_AGG_STATE_REQ_STOP_BA_MSK BIT(3) - +#define HT_AGG_STATE_INITIATOR_MSK BIT(HT_AGG_STATE_INITIATOR_SHIFT) #define HT_AGG_STATE_IDLE (0x0) -#define HT_AGG_STATE_OPERATIONAL (0x7) +#define HT_AGG_STATE_OPERATIONAL (HT_ADDBA_REQUESTED_MSK | \ + HT_ADDBA_DRV_READY_MSK | \ + HT_ADDBA_RECEIVED_MSK) +#define HT_AGG_STATE_DEBUGFS_CTL BIT(7) /** - * struct tid_ampdu_rx - TID aggregation information (Rx). + * struct tid_ampdu_tx - TID aggregation information (Tx). * - * @state: TID's state in session state machine. + * @addba_resp_timer: timer for peer's response to addba request + * @ssn: Starting Sequence Number expected to be aggregated. * @dialog_token: dialog token for aggregation session + */ +struct tid_ampdu_tx { + struct timer_list addba_resp_timer; + u16 ssn; + u8 dialog_token; +}; + +/** + * struct tid_ampdu_rx - TID aggregation information (Rx). + * + * @reorder_buf: buffer to reorder incoming aggregated MPDUs + * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) + * @head_seq_num: head sequence number in reordering buffer. + * @stored_mpdu_num: number of MPDUs in reordering buffer * @ssn: Starting Sequence Number expected to be aggregated. * @buf_size: buffer size for incoming A-MPDUs * @timeout: reset timer value. - * @head_seq_num: head sequence number in reordering buffer. - * @stored_mpdu_num: number of MPDUs in reordering buffer - * @reorder_buf: buffer to reorder incoming aggregated MPDUs - * @session_timer: check if peer keeps Tx-ing on the TID (by timeout value) + * @dialog_token: dialog token for aggregation session */ struct tid_ampdu_rx { - u8 state; - u8 dialog_token; + struct sk_buff **reorder_buf; + struct timer_list session_timer; + u16 head_seq_num; + u16 stored_mpdu_num; u16 ssn; u16 buf_size; u16 timeout; - u16 head_seq_num; - u16 stored_mpdu_num; - struct sk_buff **reorder_buf; - struct timer_list session_timer; + u8 dialog_token; +}; + +/** + * enum plink_state - state of a mesh peer link finite state machine + * + * @PLINK_LISTEN: initial state, considered the implicit state of non existant + * mesh peer links + * @PLINK_OPN_SNT: mesh plink open frame has been sent to this mesh peer + * @PLINK_OPN_RCVD: mesh plink open frame has been received from this mesh peer + * @PLINK_CNF_RCVD: mesh plink confirm frame has been received from this mesh + * peer + * @PLINK_ESTAB: mesh peer link is established + * @PLINK_HOLDING: mesh peer link is being closed or cancelled + * @PLINK_BLOCKED: all frames transmitted from this mesh plink are discarded + */ +enum plink_state { + PLINK_LISTEN, + PLINK_OPN_SNT, + PLINK_OPN_RCVD, + PLINK_CNF_RCVD, + PLINK_ESTAB, + PLINK_HOLDING, + PLINK_BLOCKED }; /** * struct sta_ampdu_mlme - STA aggregation information. * - * @tid_agg_info_rx: aggregation info for Rx per TID + * @tid_state_rx: TID's state in Rx session state machine. + * @tid_rx: aggregation info for Rx per TID * @ampdu_rx: for locking sections in aggregation Rx flow + * @tid_state_tx: TID's state in Tx session state machine. + * @tid_tx: aggregation info for Tx per TID + * @addba_req_num: number of times addBA request has been sent. + * @ampdu_tx: for locking sectionsi in aggregation Tx flow + * @dialog_token_allocator: dialog token enumerator for each new session; */ struct sta_ampdu_mlme { - struct tid_ampdu_rx tid_rx[STA_TID_NUM]; + /* rx */ + u8 tid_state_rx[STA_TID_NUM]; + struct tid_ampdu_rx *tid_rx[STA_TID_NUM]; spinlock_t ampdu_rx; + /* tx */ + u8 tid_state_tx[STA_TID_NUM]; + struct tid_ampdu_tx *tid_tx[STA_TID_NUM]; + u8 addba_req_num[STA_TID_NUM]; + spinlock_t ampdu_tx; + u8 dialog_token_allocator; }; + +/* see __sta_info_unlink */ +#define STA_INFO_PIN_STAT_NORMAL 0 +#define STA_INFO_PIN_STAT_PINNED 1 +#define STA_INFO_PIN_STAT_DESTROY 2 + +/** + * struct sta_info - STA information + * + * This structure collects information about a station that + * mac80211 is communicating with. + * + * @list: global linked list entry + * @hnext: hash table linked list pointer + * @local: pointer to the global information + * @addr: MAC address of this STA + * @aid: STA's unique AID (1..2007, 0 = not assigned yet), + * only used in AP (and IBSS?) mode + * @flags: STA flags, see &enum ieee80211_sta_info_flags + * @ps_tx_buf: buffer of frames to transmit to this station + * when it leaves power saving state + * @tx_filtered: buffer of frames we already tried to transmit + * but were filtered by hardware due to STA having entered + * power saving state + * @rx_packets: Number of MSDUs received from this STA + * @rx_bytes: Number of bytes received from this STA + * @supp_rates: Bitmap of supported rates (per band) + * @ht_info: HT capabilities of this STA + */ struct sta_info { - struct kref kref; + /* General information, mostly static */ struct list_head list; - struct sta_info *hnext; /* next entry in hash table list */ - + struct sta_info *hnext; struct ieee80211_local *local; - - u8 addr[ETH_ALEN]; - u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */ - u32 flags; /* WLAN_STA_ */ - - struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in - * power saving state */ - int pspoll; /* whether STA has send a PS Poll frame */ - struct sk_buff_head tx_filtered; /* buffer of TX frames that were - * already given to low-level driver, - * but were filtered */ - int clear_dst_mask; - - unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */ - unsigned long rx_bytes, tx_bytes; - unsigned long tx_retry_failed, tx_retry_count; - unsigned long tx_filtered_count; - - unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */ - - unsigned long last_rx; - u32 supp_rates; /* bitmap of supported rates in local->curr_rates */ - int txrate; /* index in local->curr_rates */ - int last_txrate; /* last rate used to send a frame to this STA */ - int last_nonerp_idx; - - struct net_device *dev; /* which net device is this station associated - * to */ - + struct ieee80211_sub_if_data *sdata; struct ieee80211_key *key; - - u32 tx_num_consecutive_failures; - u32 tx_num_mpdu_ok; - u32 tx_num_mpdu_fail; - struct rate_control_ref *rate_ctrl; void *rate_ctrl_priv; + struct ieee80211_ht_info ht_info; + u64 supp_rates[IEEE80211_NUM_BANDS]; + u8 addr[ETH_ALEN]; + u16 aid; + u16 listen_interval; - /* last received seq/frag number from this STA (per RX queue) */ - __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES]; + /* + * for use by the internal lifetime management, + * see __sta_info_unlink + */ + u8 pin_status; + + /* frequently updated information, needs locking? */ + u32 flags; + + /* + * STA powersave frame queues, no more than the internal + * locking required. + */ + struct sk_buff_head ps_tx_buf; + struct sk_buff_head tx_filtered; + + /* Updated from RX path only, no locking requirements */ + unsigned long rx_packets, rx_bytes; + unsigned long wep_weak_iv_count; + unsigned long last_rx; unsigned long num_duplicates; /* number of duplicate frames received * from this STA */ - unsigned long tx_fragments; /* number of transmitted MPDUs */ unsigned long rx_fragments; /* number of received MPDUs */ unsigned long rx_dropped; /* number of dropped MPDUs from this STA */ - int last_rssi; /* RSSI of last received frame from this STA */ int last_signal; /* signal of last received frame from this STA */ int last_noise; /* noise of last received frame from this STA */ - int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */ - unsigned long last_ack; - int channel_use; - int channel_use_raw; - + /* last received seq/frag number from this STA (per RX queue) */ + __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES]; #ifdef CONFIG_MAC80211_DEBUG_COUNTERS unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; +#endif + + /* Updated from TX status path only, no locking requirements */ + unsigned long tx_filtered_count; + unsigned long tx_retry_failed, tx_retry_count; + /* TODO: update in generic code not rate control? */ + u32 tx_num_consecutive_failures; + u32 tx_num_mpdu_ok; + u32 tx_num_mpdu_fail; + /* moving percentage of failed MSDUs */ + unsigned int fail_avg; + + /* Updated from TX path only, no locking requirements */ + unsigned long tx_packets; /* number of RX/TX MSDUs */ + unsigned long tx_bytes; + unsigned long tx_fragments; /* number of transmitted MPDUs */ + int txrate_idx; + int last_txrate_idx; +#ifdef CONFIG_MAC80211_DEBUG_COUNTERS unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; -#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ +#endif - u16 listen_interval; + /* Debug counters, no locking doesn't matter */ + int channel_use; + int channel_use_raw; - struct ieee80211_ht_info ht_info; /* 802.11n HT capabilities - of this STA */ + /* + * Aggregation information, comes with own locking. + */ struct sta_ampdu_mlme ampdu_mlme; - u8 timer_to_tid[STA_TID_NUM]; /* convert timer id to tid */ + u8 timer_to_tid[STA_TID_NUM]; /* identity mapping to ID timers */ + u8 tid_to_tx_q[STA_TID_NUM]; /* map tid to tx queue */ + +#ifdef CONFIG_MAC80211_MESH + /* + * Mesh peer link attributes + * TODO: move to a sub-structure that is referenced with pointer? + */ + __le16 llid; /* Local link ID */ + __le16 plid; /* Peer link ID */ + __le16 reason; /* Cancel reason on PLINK_HOLDING state */ + u8 plink_retries; /* Retries in establishment */ + bool ignore_plink_timer; + enum plink_state plink_state; + u32 plink_timeout; + struct timer_list plink_timer; + spinlock_t plink_lock; /* For peer_state reads / updates and other + updates in the structure. Ensures robust + transitions for the peerlink FSM */ +#endif #ifdef CONFIG_MAC80211_DEBUGFS struct sta_info_debugfsdentries { struct dentry *dir; struct dentry *flags; struct dentry *num_ps_buf_frames; - struct dentry *last_ack_rssi; - struct dentry *last_ack_ms; struct dentry *inactive_ms; struct dentry *last_seq_ctrl; #ifdef CONFIG_MAC80211_DEBUG_COUNTERS struct dentry *wme_rx_queue; struct dentry *wme_tx_queue; #endif + struct dentry *agg_status; } debugfs; #endif }; +static inline enum plink_state sta_plink_state(struct sta_info *sta) +{ +#ifdef CONFIG_MAC80211_MESH + return sta->plink_state; +#endif + return PLINK_LISTEN; +} + /* Maximum number of concurrently registered stations */ #define MAX_STA_COUNT 2007 @@ -185,22 +318,46 @@ struct sta_info { */ #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) -static inline void __sta_info_get(struct sta_info *sta) -{ - kref_get(&sta->kref); -} +/* + * Get a STA info, must have be under RCU read lock. + */ +struct sta_info *sta_info_get(struct ieee80211_local *local, u8 *addr); +/* + * Get STA info by index, BROKEN! + */ +struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx, + struct net_device *dev); +/* + * Create a new STA info, caller owns returned structure + * until sta_info_insert(). + */ +struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata, + u8 *addr, gfp_t gfp); +/* + * Insert STA info into hash table/list, returns zero or a + * -EEXIST if (if the same MAC address is already present). + * + * Calling this without RCU protection makes the caller + * relinquish its reference to @sta. + */ +int sta_info_insert(struct sta_info *sta); +/* + * Unlink a STA info from the hash table/list. + * This can NULL the STA pointer if somebody else + * has already unlinked it. + */ +void sta_info_unlink(struct sta_info **sta); +void __sta_info_unlink(struct sta_info **sta); + +void sta_info_destroy(struct sta_info *sta); +void sta_info_set_tim_bit(struct sta_info *sta); +void sta_info_clear_tim_bit(struct sta_info *sta); -struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr); -int sta_info_min_txrate_get(struct ieee80211_local *local); -void sta_info_put(struct sta_info *sta); -struct sta_info * sta_info_add(struct ieee80211_local *local, - struct net_device *dev, u8 *addr, gfp_t gfp); -void sta_info_remove(struct sta_info *sta); -void sta_info_free(struct sta_info *sta); void sta_info_init(struct ieee80211_local *local); int sta_info_start(struct ieee80211_local *local); void sta_info_stop(struct ieee80211_local *local); -void sta_info_remove_aid_ptr(struct sta_info *sta); -void sta_info_flush(struct ieee80211_local *local, struct net_device *dev); +int sta_info_flush(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata); +void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata); #endif /* STA_INFO_H */ diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c index 3abe194..dddbfd6 100644 --- a/net/mac80211/tkip.c +++ b/net/mac80211/tkip.c @@ -12,7 +12,7 @@ #include <linux/netdevice.h> #include <net/mac80211.h> -#include "ieee80211_key.h" +#include "key.h" #include "tkip.h" #include "wep.h" @@ -214,6 +214,59 @@ void ieee80211_tkip_gen_rc4key(struct ieee80211_key *key, u8 *ta, key->u.tkip.iv16, rc4key); } +void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, + struct sk_buff *skb, enum ieee80211_tkip_key_type type, + u8 *outkey) +{ + struct ieee80211_key *key = (struct ieee80211_key *) + container_of(keyconf, struct ieee80211_key, conf); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; + u8 *data = (u8 *) hdr; + u16 fc = le16_to_cpu(hdr->frame_control); + int hdr_len = ieee80211_get_hdrlen(fc); + u8 *ta = hdr->addr2; + u16 iv16; + u32 iv32; + + iv16 = data[hdr_len] << 8; + iv16 += data[hdr_len + 2]; + iv32 = data[hdr_len + 4] + + (data[hdr_len + 5] >> 8) + + (data[hdr_len + 6] >> 16) + + (data[hdr_len + 7] >> 24); + +#ifdef CONFIG_TKIP_DEBUG + printk(KERN_DEBUG "TKIP encrypt: iv16 = 0x%04x, iv32 = 0x%08x\n", + iv16, iv32); + + if (iv32 != key->u.tkip.iv32) { + printk(KERN_DEBUG "skb: iv32 = 0x%08x key: iv32 = 0x%08x\n", + iv32, key->u.tkip.iv32); + printk(KERN_DEBUG "Wrap around of iv16 in the middle of a " + "fragmented packet\n"); + } +#endif /* CONFIG_TKIP_DEBUG */ + + /* Update the p1k only when the iv16 in the packet wraps around, this + * might occur after the wrap around of iv16 in the key in case of + * fragmented packets. */ + if (iv16 == 0 || !key->u.tkip.tx_initialized) { + /* IV16 wrapped around - perform TKIP phase 1 */ + tkip_mixing_phase1(ta, &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY], + iv32, key->u.tkip.p1k); + key->u.tkip.tx_initialized = 1; + } + + if (type == IEEE80211_TKIP_P1_KEY) { + memcpy(outkey, key->u.tkip.p1k, sizeof(u16) * 5); + return; + } + + tkip_mixing_phase2(key->u.tkip.p1k, + &key->conf.key[ALG_TKIP_TEMP_ENCR_KEY], iv16, outkey); +} +EXPORT_SYMBOL(ieee80211_get_tkip_key); + /* Encrypt packet payload with TKIP using @key. @pos is a pointer to the * beginning of the buffer containing payload. This payload must include * headroom of eight octets for IV and Ext. IV and taildroom of four octets @@ -238,7 +291,7 @@ void ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm, int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm, struct ieee80211_key *key, u8 *payload, size_t payload_len, u8 *ta, - int only_iv, int queue, + u8 *ra, int only_iv, int queue, u32 *out_iv32, u16 *out_iv16) { u32 iv32; @@ -315,6 +368,19 @@ int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm, printk("\n"); } #endif /* CONFIG_TKIP_DEBUG */ + if (key->local->ops->update_tkip_key && + key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) { + u8 bcast[ETH_ALEN] = + {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + u8 *sta_addr = key->sta->addr; + + if (is_multicast_ether_addr(ra)) + sta_addr = bcast; + + key->local->ops->update_tkip_key( + local_to_hw(key->local), &key->conf, + sta_addr, iv32, key->u.tkip.p1k_rx[queue]); + } } tkip_mixing_phase2(key->u.tkip.p1k_rx[queue], diff --git a/net/mac80211/tkip.h b/net/mac80211/tkip.h index 73d8ef2..b7c2ee7 100644 --- a/net/mac80211/tkip.h +++ b/net/mac80211/tkip.h @@ -11,7 +11,7 @@ #include <linux/types.h> #include <linux/crypto.h> -#include "ieee80211_key.h" +#include "key.h" u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key, u8 iv0, u8 iv1, u8 iv2); @@ -31,7 +31,7 @@ enum { int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm, struct ieee80211_key *key, u8 *payload, size_t payload_len, u8 *ta, - int only_iv, int queue, + u8 *ra, int only_iv, int queue, u32 *out_iv32, u16 *out_iv16); #endif /* TKIP_H */ diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 67b509e..f35eaea9 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -25,11 +25,12 @@ #include <asm/unaligned.h> #include "ieee80211_i.h" -#include "ieee80211_led.h" +#include "led.h" +#include "mesh.h" #include "wep.h" #include "wpa.h" #include "wme.h" -#include "ieee80211_rate.h" +#include "rate.h" #define IEEE80211_TX_OK 0 #define IEEE80211_TX_AGAIN 1 @@ -86,15 +87,19 @@ static inline void ieee80211_dump_frame(const char *ifname, const char *title, } #endif /* CONFIG_MAC80211_LOWTX_FRAME_DUMP */ -static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr, +static u16 ieee80211_duration(struct ieee80211_tx_data *tx, int group_addr, int next_frag_len) { int rate, mrate, erp, dur, i; - struct ieee80211_rate *txrate = tx->u.tx.rate; + struct ieee80211_rate *txrate = tx->rate; struct ieee80211_local *local = tx->local; - struct ieee80211_hw_mode *mode = tx->u.tx.mode; + struct ieee80211_supported_band *sband; - erp = txrate->flags & IEEE80211_RATE_ERP; + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + + erp = 0; + if (tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) + erp = txrate->flags & IEEE80211_RATE_ERP_G; /* * data and mgmt (except PS Poll): @@ -150,20 +155,36 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr, * Mandatory rates for IEEE 802.11g PHY: 1, 2, 5.5, 11, 6, 12, 24 Mbps */ rate = -1; - mrate = 10; /* use 1 Mbps if everything fails */ - for (i = 0; i < mode->num_rates; i++) { - struct ieee80211_rate *r = &mode->rates[i]; - if (r->rate > txrate->rate) - break; + /* use lowest available if everything fails */ + mrate = sband->bitrates[0].bitrate; + for (i = 0; i < sband->n_bitrates; i++) { + struct ieee80211_rate *r = &sband->bitrates[i]; - if (IEEE80211_RATE_MODULATION(txrate->flags) != - IEEE80211_RATE_MODULATION(r->flags)) - continue; + if (r->bitrate > txrate->bitrate) + break; - if (r->flags & IEEE80211_RATE_BASIC) - rate = r->rate; - else if (r->flags & IEEE80211_RATE_MANDATORY) - mrate = r->rate; + if (tx->sdata->basic_rates & BIT(i)) + rate = r->bitrate; + + switch (sband->band) { + case IEEE80211_BAND_2GHZ: { + u32 flag; + if (tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) + flag = IEEE80211_RATE_MANDATORY_G; + else + flag = IEEE80211_RATE_MANDATORY_B; + if (r->flags & flag) + mrate = r->bitrate; + break; + } + case IEEE80211_BAND_5GHZ: + if (r->flags & IEEE80211_RATE_MANDATORY_A) + mrate = r->bitrate; + break; + case IEEE80211_NUM_BANDS: + WARN_ON(1); + break; + } } if (rate == -1) { /* No matching basic rate found; use highest suitable mandatory @@ -184,7 +205,7 @@ static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr, dur *= 2; /* ACK + SIFS */ /* next fragment */ dur += ieee80211_frame_duration(local, next_frag_len, - txrate->rate, erp, + txrate->bitrate, erp, tx->sdata->bss_conf.use_short_preamble); } @@ -212,8 +233,8 @@ static int inline is_ieee80211_device(struct net_device *dev, /* tx handlers */ -static ieee80211_txrx_result -ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx) { #ifdef CONFIG_MAC80211_VERBOSE_DEBUG struct sk_buff *skb = tx->skb; @@ -221,20 +242,23 @@ ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx) #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ u32 sta_flags; - if (unlikely(tx->flags & IEEE80211_TXRXD_TX_INJECTED)) - return TXRX_CONTINUE; + if (unlikely(tx->flags & IEEE80211_TX_INJECTED)) + return TX_CONTINUE; if (unlikely(tx->local->sta_sw_scanning) && ((tx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT || (tx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PROBE_REQ)) - return TXRX_DROP; + return TX_DROP; - if (tx->flags & IEEE80211_TXRXD_TXPS_BUFFERED) - return TXRX_CONTINUE; + if (tx->sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT) + return TX_CONTINUE; + + if (tx->flags & IEEE80211_TX_PS_BUFFERED) + return TX_CONTINUE; sta_flags = tx->sta ? tx->sta->flags : 0; - if (likely(tx->flags & IEEE80211_TXRXD_TXUNICAST)) { + if (likely(tx->flags & IEEE80211_TX_UNICAST)) { if (unlikely(!(sta_flags & WLAN_STA_ASSOC) && tx->sdata->vif.type != IEEE80211_IF_TYPE_IBSS && (tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) { @@ -245,7 +269,7 @@ ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx) tx->dev->name, print_mac(mac, hdr->addr1)); #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ I802_DEBUG_INC(tx->local->tx_handlers_drop_not_assoc); - return TXRX_DROP; + return TX_DROP; } } else { if (unlikely((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA && @@ -255,23 +279,23 @@ ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx) * No associated STAs - no need to send multicast * frames. */ - return TXRX_DROP; + return TX_DROP; } - return TXRX_CONTINUE; + return TX_CONTINUE; } - return TXRX_CONTINUE; + return TX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_tx_h_sequence(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data; if (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control)) >= 24) ieee80211_include_sequence(tx->sdata, hdr); - return TXRX_CONTINUE; + return TX_CONTINUE; } /* This function is called whenever the AP is about to exceed the maximum limit @@ -303,10 +327,8 @@ static void purge_old_ps_buffers(struct ieee80211_local *local) } total += skb_queue_len(&ap->ps_bc_buf); } - rcu_read_unlock(); - read_lock_bh(&local->sta_lock); - list_for_each_entry(sta, &local->sta_list, list) { + list_for_each_entry_rcu(sta, &local->sta_list, list) { skb = skb_dequeue(&sta->ps_tx_buf); if (skb) { purged++; @@ -314,15 +336,16 @@ static void purge_old_ps_buffers(struct ieee80211_local *local) } total += skb_queue_len(&sta->ps_tx_buf); } - read_unlock_bh(&local->sta_lock); + + rcu_read_unlock(); local->total_ps_buffered = total; printk(KERN_DEBUG "%s: PS buffers full - purged %d frames\n", wiphy_name(local->hw.wiphy), purged); } -static ieee80211_txrx_result -ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx) { /* * broadcast/multicast frame @@ -334,11 +357,11 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx) /* not AP/IBSS or ordered frame */ if (!tx->sdata->bss || (tx->fc & IEEE80211_FCTL_ORDER)) - return TXRX_CONTINUE; + return TX_CONTINUE; /* no stations in PS mode */ if (!atomic_read(&tx->sdata->bss->num_sta_ps)) - return TXRX_CONTINUE; + return TX_CONTINUE; /* buffered in mac80211 */ if (tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) { @@ -355,17 +378,17 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx) } else tx->local->total_ps_buffered++; skb_queue_tail(&tx->sdata->bss->ps_bc_buf, tx->skb); - return TXRX_QUEUED; + return TX_QUEUED; } /* buffered in hardware */ - tx->u.tx.control->flags |= IEEE80211_TXCTL_SEND_AFTER_DTIM; + tx->control->flags |= IEEE80211_TXCTL_SEND_AFTER_DTIM; - return TXRX_CONTINUE; + return TX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx) { struct sta_info *sta = tx->sta; DECLARE_MAC_BUF(mac); @@ -373,9 +396,10 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx) if (unlikely(!sta || ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT && (tx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP))) - return TXRX_CONTINUE; + return TX_CONTINUE; - if (unlikely((sta->flags & WLAN_STA_PS) && !sta->pspoll)) { + if (unlikely((sta->flags & WLAN_STA_PS) && + !(sta->flags & WLAN_STA_PSPOLL))) { struct ieee80211_tx_packet_data *pkt_data; #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "STA %s aid %d: PS buffer (entries " @@ -383,7 +407,6 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx) print_mac(mac, sta->addr), sta->aid, skb_queue_len(&sta->ps_tx_buf)); #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ - sta->flags |= WLAN_STA_TIM; if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER) purge_old_ps_buffers(tx->local); if (skb_queue_len(&sta->ps_tx_buf) >= STA_MAX_TX_BUFFER) { @@ -396,18 +419,15 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx) dev_kfree_skb(old); } else tx->local->total_ps_buffered++; + /* Queue frame to be sent after STA sends an PS Poll frame */ - if (skb_queue_empty(&sta->ps_tx_buf)) { - if (tx->local->ops->set_tim) - tx->local->ops->set_tim(local_to_hw(tx->local), - sta->aid, 1); - if (tx->sdata->bss) - bss_tim_set(tx->local, tx->sdata->bss, sta->aid); - } + if (skb_queue_empty(&sta->ps_tx_buf)) + sta_info_set_tim_bit(sta); + pkt_data = (struct ieee80211_tx_packet_data *)tx->skb->cb; pkt_data->jiffies = jiffies; skb_queue_tail(&sta->ps_tx_buf, tx->skb); - return TXRX_QUEUED; + return TX_QUEUED; } #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG else if (unlikely(sta->flags & WLAN_STA_PS)) { @@ -416,40 +436,40 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx) print_mac(mac, sta->addr)); } #endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */ - sta->pspoll = 0; + sta->flags &= ~WLAN_STA_PSPOLL; - return TXRX_CONTINUE; + return TX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_tx_h_ps_buf(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_ps_buf(struct ieee80211_tx_data *tx) { - if (unlikely(tx->flags & IEEE80211_TXRXD_TXPS_BUFFERED)) - return TXRX_CONTINUE; + if (unlikely(tx->flags & IEEE80211_TX_PS_BUFFERED)) + return TX_CONTINUE; - if (tx->flags & IEEE80211_TXRXD_TXUNICAST) + if (tx->flags & IEEE80211_TX_UNICAST) return ieee80211_tx_h_unicast_ps_buf(tx); else return ieee80211_tx_h_multicast_ps_buf(tx); } -static ieee80211_txrx_result -ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx) { struct ieee80211_key *key; u16 fc = tx->fc; - if (unlikely(tx->u.tx.control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) + if (unlikely(tx->control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) tx->key = NULL; else if (tx->sta && (key = rcu_dereference(tx->sta->key))) tx->key = key; else if ((key = rcu_dereference(tx->sdata->default_key))) tx->key = key; else if (tx->sdata->drop_unencrypted && - !(tx->u.tx.control->flags & IEEE80211_TXCTL_EAPOL_FRAME) && - !(tx->flags & IEEE80211_TXRXD_TX_INJECTED)) { + !(tx->control->flags & IEEE80211_TXCTL_EAPOL_FRAME) && + !(tx->flags & IEEE80211_TX_INJECTED)) { I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted); - return TXRX_DROP; + return TX_DROP; } else tx->key = NULL; @@ -476,13 +496,13 @@ ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx) } if (!tx->key || !(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) - tx->u.tx.control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT; + tx->control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT; - return TXRX_CONTINUE; + return TX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_fragment(struct ieee80211_tx_data *tx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data; size_t hdrlen, per_fragm, num_fragm, payload_len, left; @@ -492,8 +512,8 @@ ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx) u8 *pos; int frag_threshold = tx->local->fragmentation_threshold; - if (!(tx->flags & IEEE80211_TXRXD_FRAGMENTED)) - return TXRX_CONTINUE; + if (!(tx->flags & IEEE80211_TX_FRAGMENTED)) + return TX_CONTINUE; first = tx->skb; @@ -544,10 +564,10 @@ ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx) } skb_trim(first, hdrlen + per_fragm); - tx->u.tx.num_extra_frag = num_fragm - 1; - tx->u.tx.extra_frag = frags; + tx->num_extra_frag = num_fragm - 1; + tx->extra_frag = frags; - return TXRX_CONTINUE; + return TX_CONTINUE; fail: printk(KERN_DEBUG "%s: failed to fragment frame\n", tx->dev->name); @@ -558,14 +578,14 @@ ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx) kfree(frags); } I802_DEBUG_INC(tx->local->tx_handlers_drop_fragment); - return TXRX_DROP; + return TX_DROP; } -static ieee80211_txrx_result -ieee80211_tx_h_encrypt(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_encrypt(struct ieee80211_tx_data *tx) { if (!tx->key) - return TXRX_CONTINUE; + return TX_CONTINUE; switch (tx->key->conf.alg) { case ALG_WEP: @@ -578,59 +598,60 @@ ieee80211_tx_h_encrypt(struct ieee80211_txrx_data *tx) /* not reached */ WARN_ON(1); - return TXRX_DROP; + return TX_DROP; } -static ieee80211_txrx_result -ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx) { struct rate_selection rsel; + struct ieee80211_supported_band *sband; + + sband = tx->local->hw.wiphy->bands[tx->local->hw.conf.channel->band]; - if (likely(!tx->u.tx.rate)) { - rate_control_get_rate(tx->dev, tx->u.tx.mode, tx->skb, &rsel); - tx->u.tx.rate = rsel.rate; - if (unlikely(rsel.probe != NULL)) { - tx->u.tx.control->flags |= + if (likely(!tx->rate)) { + rate_control_get_rate(tx->dev, sband, tx->skb, &rsel); + tx->rate = rsel.rate; + if (unlikely(rsel.probe)) { + tx->control->flags |= IEEE80211_TXCTL_RATE_CTRL_PROBE; - tx->flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG; - tx->u.tx.control->alt_retry_rate = tx->u.tx.rate->val; - tx->u.tx.rate = rsel.probe; + tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG; + tx->control->alt_retry_rate = tx->rate; + tx->rate = rsel.probe; } else - tx->u.tx.control->alt_retry_rate = -1; + tx->control->alt_retry_rate = NULL; - if (!tx->u.tx.rate) - return TXRX_DROP; + if (!tx->rate) + return TX_DROP; } else - tx->u.tx.control->alt_retry_rate = -1; + tx->control->alt_retry_rate = NULL; - if (tx->u.tx.mode->mode == MODE_IEEE80211G && - tx->sdata->bss_conf.use_cts_prot && - (tx->flags & IEEE80211_TXRXD_FRAGMENTED) && rsel.nonerp) { - tx->u.tx.last_frag_rate = tx->u.tx.rate; + if (tx->sdata->bss_conf.use_cts_prot && + (tx->flags & IEEE80211_TX_FRAGMENTED) && rsel.nonerp) { + tx->last_frag_rate = tx->rate; if (rsel.probe) - tx->flags &= ~IEEE80211_TXRXD_TXPROBE_LAST_FRAG; + tx->flags &= ~IEEE80211_TX_PROBE_LAST_FRAG; else - tx->flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG; - tx->u.tx.rate = rsel.nonerp; - tx->u.tx.control->rate = rsel.nonerp; - tx->u.tx.control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE; + tx->flags |= IEEE80211_TX_PROBE_LAST_FRAG; + tx->rate = rsel.nonerp; + tx->control->tx_rate = rsel.nonerp; + tx->control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE; } else { - tx->u.tx.last_frag_rate = tx->u.tx.rate; - tx->u.tx.control->rate = tx->u.tx.rate; + tx->last_frag_rate = tx->rate; + tx->control->tx_rate = tx->rate; } - tx->u.tx.control->tx_rate = tx->u.tx.rate->val; + tx->control->tx_rate = tx->rate; - return TXRX_CONTINUE; + return TX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_misc(struct ieee80211_tx_data *tx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data; u16 fc = le16_to_cpu(hdr->frame_control); u16 dur; - struct ieee80211_tx_control *control = tx->u.tx.control; - struct ieee80211_hw_mode *mode = tx->u.tx.mode; + struct ieee80211_tx_control *control = tx->control; if (!control->retry_limit) { if (!is_multicast_ether_addr(hdr->addr1)) { @@ -652,20 +673,20 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx) } } - if (tx->flags & IEEE80211_TXRXD_FRAGMENTED) { + if (tx->flags & IEEE80211_TX_FRAGMENTED) { /* Do not use multiple retry rates when sending fragmented * frames. * TODO: The last fragment could still use multiple retry * rates. */ - control->alt_retry_rate = -1; + control->alt_retry_rate = NULL; } /* Use CTS protection for unicast frames sent using extended rates if * there are associated non-ERP stations and RTS/CTS is not configured * for the frame. */ - if (mode->mode == MODE_IEEE80211G && - (tx->u.tx.rate->flags & IEEE80211_RATE_ERP) && - (tx->flags & IEEE80211_TXRXD_TXUNICAST) && + if ((tx->sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) && + (tx->rate->flags & IEEE80211_RATE_ERP_G) && + (tx->flags & IEEE80211_TX_UNICAST) && tx->sdata->bss_conf.use_cts_prot && !(control->flags & IEEE80211_TXCTL_USE_RTS_CTS)) control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT; @@ -674,62 +695,77 @@ ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx) * short preambles at the selected rate and short preambles are * available on the network at the current point in time. */ if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && - (tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) && + (tx->rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && tx->sdata->bss_conf.use_short_preamble && (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) { - tx->u.tx.control->tx_rate = tx->u.tx.rate->val2; + tx->control->flags |= IEEE80211_TXCTL_SHORT_PREAMBLE; } /* Setup duration field for the first fragment of the frame. Duration * for remaining fragments will be updated when they are being sent * to low-level driver in ieee80211_tx(). */ dur = ieee80211_duration(tx, is_multicast_ether_addr(hdr->addr1), - (tx->flags & IEEE80211_TXRXD_FRAGMENTED) ? - tx->u.tx.extra_frag[0]->len : 0); + (tx->flags & IEEE80211_TX_FRAGMENTED) ? + tx->extra_frag[0]->len : 0); hdr->duration_id = cpu_to_le16(dur); if ((control->flags & IEEE80211_TXCTL_USE_RTS_CTS) || (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) { - struct ieee80211_rate *rate; + struct ieee80211_supported_band *sband; + struct ieee80211_rate *rate, *baserate; + int idx; + + sband = tx->local->hw.wiphy->bands[ + tx->local->hw.conf.channel->band]; /* Do not use multiple retry rates when using RTS/CTS */ - control->alt_retry_rate = -1; + control->alt_retry_rate = NULL; /* Use min(data rate, max base rate) as CTS/RTS rate */ - rate = tx->u.tx.rate; - while (rate > mode->rates && - !(rate->flags & IEEE80211_RATE_BASIC)) - rate--; + rate = tx->rate; + baserate = NULL; + + for (idx = 0; idx < sband->n_bitrates; idx++) { + if (sband->bitrates[idx].bitrate > rate->bitrate) + continue; + if (tx->sdata->basic_rates & BIT(idx) && + (!baserate || + (baserate->bitrate < sband->bitrates[idx].bitrate))) + baserate = &sband->bitrates[idx]; + } - control->rts_cts_rate = rate->val; - control->rts_rate = rate; + if (baserate) + control->rts_cts_rate = baserate; + else + control->rts_cts_rate = &sband->bitrates[0]; } if (tx->sta) { + control->aid = tx->sta->aid; tx->sta->tx_packets++; tx->sta->tx_fragments++; tx->sta->tx_bytes += tx->skb->len; - if (tx->u.tx.extra_frag) { + if (tx->extra_frag) { int i; - tx->sta->tx_fragments += tx->u.tx.num_extra_frag; - for (i = 0; i < tx->u.tx.num_extra_frag; i++) { + tx->sta->tx_fragments += tx->num_extra_frag; + for (i = 0; i < tx->num_extra_frag; i++) { tx->sta->tx_bytes += - tx->u.tx.extra_frag[i]->len; + tx->extra_frag[i]->len; } } } - return TXRX_CONTINUE; + return TX_CONTINUE; } -static ieee80211_txrx_result -ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx) +static ieee80211_tx_result +ieee80211_tx_h_load_stats(struct ieee80211_tx_data *tx) { struct ieee80211_local *local = tx->local; - struct ieee80211_hw_mode *mode = tx->u.tx.mode; struct sk_buff *skb = tx->skb; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; u32 load = 0, hdrtime; + struct ieee80211_rate *rate = tx->rate; /* TODO: this could be part of tx_status handling, so that the number * of retries would be known; TX rate should in that case be stored @@ -740,9 +776,9 @@ ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx) /* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values, * 1 usec = 1/8 * (1080 / 10) = 13.5 */ - if (mode->mode == MODE_IEEE80211A || - (mode->mode == MODE_IEEE80211G && - tx->u.tx.rate->flags & IEEE80211_RATE_ERP)) + if (tx->channel->band == IEEE80211_BAND_5GHZ || + (tx->channel->band == IEEE80211_BAND_2GHZ && + rate->flags & IEEE80211_RATE_ERP_G)) hdrtime = CHAN_UTIL_HDR_SHORT; else hdrtime = CHAN_UTIL_HDR_LONG; @@ -751,19 +787,20 @@ ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx) if (!is_multicast_ether_addr(hdr->addr1)) load += hdrtime; - if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_RTS_CTS) + if (tx->control->flags & IEEE80211_TXCTL_USE_RTS_CTS) load += 2 * hdrtime; - else if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) + else if (tx->control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) load += hdrtime; - load += skb->len * tx->u.tx.rate->rate_inv; + /* TODO: optimise again */ + load += skb->len * CHAN_UTIL_RATE_LCM / rate->bitrate; - if (tx->u.tx.extra_frag) { + if (tx->extra_frag) { int i; - for (i = 0; i < tx->u.tx.num_extra_frag; i++) { + for (i = 0; i < tx->num_extra_frag; i++) { load += 2 * hdrtime; - load += tx->u.tx.extra_frag[i]->len * - tx->u.tx.rate->rate; + load += tx->extra_frag[i]->len * + tx->rate->bitrate; } } @@ -774,13 +811,12 @@ ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx) tx->sta->channel_use_raw += load; tx->sdata->channel_use_raw += load; - return TXRX_CONTINUE; + return TX_CONTINUE; } -/* TODO: implement register/unregister functions for adding TX/RX handlers - * into ordered list */ -ieee80211_tx_handler ieee80211_tx_handlers[] = +typedef ieee80211_tx_result (*ieee80211_tx_handler)(struct ieee80211_tx_data *); +static ieee80211_tx_handler ieee80211_tx_handlers[] = { ieee80211_tx_h_check_assoc, ieee80211_tx_h_sequence, @@ -801,8 +837,8 @@ ieee80211_tx_handler ieee80211_tx_handlers[] = * deal with packet injection down monitor interface * with Radiotap Header -- only called for monitor mode interface */ -static ieee80211_txrx_result -__ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx, +static ieee80211_tx_result +__ieee80211_parse_tx_radiotap(struct ieee80211_tx_data *tx, struct sk_buff *skb) { /* @@ -816,13 +852,15 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx, struct ieee80211_radiotap_iterator iterator; struct ieee80211_radiotap_header *rthdr = (struct ieee80211_radiotap_header *) skb->data; - struct ieee80211_hw_mode *mode = tx->local->hw.conf.mode; + struct ieee80211_supported_band *sband; int ret = ieee80211_radiotap_iterator_init(&iterator, rthdr, skb->len); - struct ieee80211_tx_control *control = tx->u.tx.control; + struct ieee80211_tx_control *control = tx->control; + + sband = tx->local->hw.wiphy->bands[tx->local->hw.conf.channel->band]; control->flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT; - tx->flags |= IEEE80211_TXRXD_TX_INJECTED; - tx->flags &= ~IEEE80211_TXRXD_FRAGMENTED; + tx->flags |= IEEE80211_TX_INJECTED; + tx->flags &= ~IEEE80211_TX_FRAGMENTED; /* * for every radiotap entry that is present @@ -852,11 +890,13 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx, * ieee80211 rate int is in 100kbps units eg, 0x0a=1Mbps */ target_rate = (*iterator.this_arg) * 5; - for (i = 0; i < mode->num_rates; i++) { - struct ieee80211_rate *r = &mode->rates[i]; + for (i = 0; i < sband->n_bitrates; i++) { + struct ieee80211_rate *r; + + r = &sband->bitrates[i]; - if (r->rate == target_rate) { - tx->u.tx.rate = r; + if (r->bitrate == target_rate) { + tx->rate = r; break; } } @@ -870,9 +910,11 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx, control->antenna_sel_tx = (*iterator.this_arg) + 1; break; +#if 0 case IEEE80211_RADIOTAP_DBM_TX_POWER: control->power_level = *iterator.this_arg; break; +#endif case IEEE80211_RADIOTAP_FLAGS: if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FCS) { @@ -884,7 +926,7 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx, * on transmission */ if (skb->len < (iterator.max_length + FCS_LEN)) - return TXRX_DROP; + return TX_DROP; skb_trim(skb, skb->len - FCS_LEN); } @@ -892,7 +934,7 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx, control->flags &= ~IEEE80211_TXCTL_DO_NOT_ENCRYPT; if (*iterator.this_arg & IEEE80211_RADIOTAP_F_FRAG) - tx->flags |= IEEE80211_TXRXD_FRAGMENTED; + tx->flags |= IEEE80211_TX_FRAGMENTED; break; /* @@ -907,7 +949,7 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx, } if (ret != -ENOENT) /* ie, if we didn't simply run out of fields */ - return TXRX_DROP; + return TX_DROP; /* * remove the radiotap header @@ -916,14 +958,14 @@ __ieee80211_parse_tx_radiotap(struct ieee80211_txrx_data *tx, */ skb_pull(skb, iterator.max_length); - return TXRX_CONTINUE; + return TX_CONTINUE; } /* * initialises @tx */ -static ieee80211_txrx_result -__ieee80211_tx_prepare(struct ieee80211_txrx_data *tx, +static ieee80211_tx_result +__ieee80211_tx_prepare(struct ieee80211_tx_data *tx, struct sk_buff *skb, struct net_device *dev, struct ieee80211_tx_control *control) @@ -939,18 +981,18 @@ __ieee80211_tx_prepare(struct ieee80211_txrx_data *tx, tx->dev = dev; /* use original interface */ tx->local = local; tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev); - tx->u.tx.control = control; + tx->control = control; /* * Set this flag (used below to indicate "automatic fragmentation"), * it will be cleared/left by radiotap as desired. */ - tx->flags |= IEEE80211_TXRXD_FRAGMENTED; + tx->flags |= IEEE80211_TX_FRAGMENTED; /* process and remove the injection radiotap header */ sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (unlikely(sdata->vif.type == IEEE80211_IF_TYPE_MNTR)) { - if (__ieee80211_parse_tx_radiotap(tx, skb) == TXRX_DROP) - return TXRX_DROP; + if (__ieee80211_parse_tx_radiotap(tx, skb) == TX_DROP) + return TX_DROP; /* * __ieee80211_parse_tx_radiotap has now removed @@ -965,27 +1007,27 @@ __ieee80211_tx_prepare(struct ieee80211_txrx_data *tx, tx->fc = le16_to_cpu(hdr->frame_control); if (is_multicast_ether_addr(hdr->addr1)) { - tx->flags &= ~IEEE80211_TXRXD_TXUNICAST; + tx->flags &= ~IEEE80211_TX_UNICAST; control->flags |= IEEE80211_TXCTL_NO_ACK; } else { - tx->flags |= IEEE80211_TXRXD_TXUNICAST; + tx->flags |= IEEE80211_TX_UNICAST; control->flags &= ~IEEE80211_TXCTL_NO_ACK; } - if (tx->flags & IEEE80211_TXRXD_FRAGMENTED) { - if ((tx->flags & IEEE80211_TXRXD_TXUNICAST) && + if (tx->flags & IEEE80211_TX_FRAGMENTED) { + if ((tx->flags & IEEE80211_TX_UNICAST) && skb->len + FCS_LEN > local->fragmentation_threshold && !local->ops->set_frag_threshold) - tx->flags |= IEEE80211_TXRXD_FRAGMENTED; + tx->flags |= IEEE80211_TX_FRAGMENTED; else - tx->flags &= ~IEEE80211_TXRXD_FRAGMENTED; + tx->flags &= ~IEEE80211_TX_FRAGMENTED; } if (!tx->sta) - control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK; - else if (tx->sta->clear_dst_mask) { - control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK; - tx->sta->clear_dst_mask = 0; + control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT; + else if (tx->sta->flags & WLAN_STA_CLEAR_PS_FILT) { + control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT; + tx->sta->flags &= ~WLAN_STA_CLEAR_PS_FILT; } hdrlen = ieee80211_get_hdrlen(tx->fc); @@ -995,13 +1037,13 @@ __ieee80211_tx_prepare(struct ieee80211_txrx_data *tx, } control->flags |= IEEE80211_TXCTL_FIRST_FRAGMENT; - return TXRX_CONTINUE; + return TX_CONTINUE; } /* * NB: @tx is uninitialised when passed in here */ -static int ieee80211_tx_prepare(struct ieee80211_txrx_data *tx, +static int ieee80211_tx_prepare(struct ieee80211_tx_data *tx, struct sk_buff *skb, struct net_device *mdev, struct ieee80211_tx_control *control) @@ -1024,9 +1066,9 @@ static int ieee80211_tx_prepare(struct ieee80211_txrx_data *tx, } static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb, - struct ieee80211_txrx_data *tx) + struct ieee80211_tx_data *tx) { - struct ieee80211_tx_control *control = tx->u.tx.control; + struct ieee80211_tx_control *control = tx->control; int ret, i; if (!ieee80211_qdisc_installed(local->mdev) && @@ -1043,20 +1085,20 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb, local->mdev->trans_start = jiffies; ieee80211_led_tx(local, 1); } - if (tx->u.tx.extra_frag) { + if (tx->extra_frag) { control->flags &= ~(IEEE80211_TXCTL_USE_RTS_CTS | IEEE80211_TXCTL_USE_CTS_PROTECT | - IEEE80211_TXCTL_CLEAR_DST_MASK | + IEEE80211_TXCTL_CLEAR_PS_FILT | IEEE80211_TXCTL_FIRST_FRAGMENT); - for (i = 0; i < tx->u.tx.num_extra_frag; i++) { - if (!tx->u.tx.extra_frag[i]) + for (i = 0; i < tx->num_extra_frag; i++) { + if (!tx->extra_frag[i]) continue; if (__ieee80211_queue_stopped(local, control->queue)) return IEEE80211_TX_FRAG_AGAIN; - if (i == tx->u.tx.num_extra_frag) { - control->tx_rate = tx->u.tx.last_frag_hwrate; - control->rate = tx->u.tx.last_frag_rate; - if (tx->flags & IEEE80211_TXRXD_TXPROBE_LAST_FRAG) + if (i == tx->num_extra_frag) { + control->tx_rate = tx->last_frag_rate; + + if (tx->flags & IEEE80211_TX_PROBE_LAST_FRAG) control->flags |= IEEE80211_TXCTL_RATE_CTRL_PROBE; else @@ -1066,18 +1108,18 @@ static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb, ieee80211_dump_frame(wiphy_name(local->hw.wiphy), "TX to low-level driver", - tx->u.tx.extra_frag[i]); + tx->extra_frag[i]); ret = local->ops->tx(local_to_hw(local), - tx->u.tx.extra_frag[i], + tx->extra_frag[i], control); if (ret) return IEEE80211_TX_FRAG_AGAIN; local->mdev->trans_start = jiffies; ieee80211_led_tx(local, 1); - tx->u.tx.extra_frag[i] = NULL; + tx->extra_frag[i] = NULL; } - kfree(tx->u.tx.extra_frag); - tx->u.tx.extra_frag = NULL; + kfree(tx->extra_frag); + tx->extra_frag = NULL; } return IEEE80211_TX_OK; } @@ -1088,8 +1130,8 @@ static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb, struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct sta_info *sta; ieee80211_tx_handler *handler; - struct ieee80211_txrx_data tx; - ieee80211_txrx_result res = TXRX_DROP, res_prepare; + struct ieee80211_tx_data tx; + ieee80211_tx_result res = TX_DROP, res_prepare; int ret, i; WARN_ON(__ieee80211_queue_pending(local, control->queue)); @@ -1099,59 +1141,52 @@ static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb, return 0; } + rcu_read_lock(); + /* initialises tx */ res_prepare = __ieee80211_tx_prepare(&tx, skb, dev, control); - if (res_prepare == TXRX_DROP) { + if (res_prepare == TX_DROP) { dev_kfree_skb(skb); + rcu_read_unlock(); return 0; } - /* - * key references are protected using RCU and this requires that - * we are in a read-site RCU section during receive processing - */ - rcu_read_lock(); - sta = tx.sta; - tx.u.tx.mode = local->hw.conf.mode; + tx.channel = local->hw.conf.channel; - for (handler = local->tx_handlers; *handler != NULL; + for (handler = ieee80211_tx_handlers; *handler != NULL; handler++) { res = (*handler)(&tx); - if (res != TXRX_CONTINUE) + if (res != TX_CONTINUE) break; } skb = tx.skb; /* handlers are allowed to change skb */ - if (sta) - sta_info_put(sta); - - if (unlikely(res == TXRX_DROP)) { + if (unlikely(res == TX_DROP)) { I802_DEBUG_INC(local->tx_handlers_drop); goto drop; } - if (unlikely(res == TXRX_QUEUED)) { + if (unlikely(res == TX_QUEUED)) { I802_DEBUG_INC(local->tx_handlers_queued); rcu_read_unlock(); return 0; } - if (tx.u.tx.extra_frag) { - for (i = 0; i < tx.u.tx.num_extra_frag; i++) { + if (tx.extra_frag) { + for (i = 0; i < tx.num_extra_frag; i++) { int next_len, dur; struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) - tx.u.tx.extra_frag[i]->data; + tx.extra_frag[i]->data; - if (i + 1 < tx.u.tx.num_extra_frag) { - next_len = tx.u.tx.extra_frag[i + 1]->len; + if (i + 1 < tx.num_extra_frag) { + next_len = tx.extra_frag[i + 1]->len; } else { next_len = 0; - tx.u.tx.rate = tx.u.tx.last_frag_rate; - tx.u.tx.last_frag_hwrate = tx.u.tx.rate->val; + tx.rate = tx.last_frag_rate; } dur = ieee80211_duration(&tx, 0, next_len); hdr->duration_id = cpu_to_le16(dur); @@ -1186,12 +1221,11 @@ retry: memcpy(&store->control, control, sizeof(struct ieee80211_tx_control)); store->skb = skb; - store->extra_frag = tx.u.tx.extra_frag; - store->num_extra_frag = tx.u.tx.num_extra_frag; - store->last_frag_hwrate = tx.u.tx.last_frag_hwrate; - store->last_frag_rate = tx.u.tx.last_frag_rate; + store->extra_frag = tx.extra_frag; + store->num_extra_frag = tx.num_extra_frag; + store->last_frag_rate = tx.last_frag_rate; store->last_frag_rate_ctrl_probe = - !!(tx.flags & IEEE80211_TXRXD_TXPROBE_LAST_FRAG); + !!(tx.flags & IEEE80211_TX_PROBE_LAST_FRAG); } rcu_read_unlock(); return 0; @@ -1199,10 +1233,10 @@ retry: drop: if (skb) dev_kfree_skb(skb); - for (i = 0; i < tx.u.tx.num_extra_frag; i++) - if (tx.u.tx.extra_frag[i]) - dev_kfree_skb(tx.u.tx.extra_frag[i]); - kfree(tx.u.tx.extra_frag); + for (i = 0; i < tx.num_extra_frag; i++) + if (tx.extra_frag[i]) + dev_kfree_skb(tx.extra_frag[i]); + kfree(tx.extra_frag); rcu_read_unlock(); return 0; } @@ -1260,6 +1294,8 @@ int ieee80211_master_start_xmit(struct sk_buff *skb, control.flags |= IEEE80211_TXCTL_REQUEUE; if (pkt_data->flags & IEEE80211_TXPD_EAPOL_FRAME) control.flags |= IEEE80211_TXCTL_EAPOL_FRAME; + if (pkt_data->flags & IEEE80211_TXPD_AMPDU) + control.flags |= IEEE80211_TXCTL_AMPDU; control.queue = pkt_data->queue; ret = ieee80211_tx(odev, skb, &control); @@ -1346,8 +1382,9 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, struct ieee80211_tx_packet_data *pkt_data; struct ieee80211_sub_if_data *sdata; int ret = 1, head_need; - u16 ethertype, hdrlen, fc; + u16 ethertype, hdrlen, meshhdrlen = 0, fc; struct ieee80211_hdr hdr; + struct ieee80211s_hdr mesh_hdr; const u8 *encaps_data; int encaps_len, skip_header_bytes; int nh_pos, h_pos; @@ -1389,6 +1426,37 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN); hdrlen = 30; break; +#ifdef CONFIG_MAC80211_MESH + case IEEE80211_IF_TYPE_MESH_POINT: + fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS; + /* RA TA DA SA */ + if (is_multicast_ether_addr(skb->data)) + memcpy(hdr.addr1, skb->data, ETH_ALEN); + else if (mesh_nexthop_lookup(hdr.addr1, skb, dev)) + return 0; + memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN); + memcpy(hdr.addr3, skb->data, ETH_ALEN); + memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN); + if (skb->pkt_type == PACKET_OTHERHOST) { + /* Forwarded frame, keep mesh ttl and seqnum */ + struct ieee80211s_hdr *prev_meshhdr; + prev_meshhdr = ((struct ieee80211s_hdr *)skb->cb); + meshhdrlen = ieee80211_get_mesh_hdrlen(prev_meshhdr); + memcpy(&mesh_hdr, prev_meshhdr, meshhdrlen); + sdata->u.sta.mshstats.fwded_frames++; + } else { + if (!sdata->u.sta.mshcfg.dot11MeshTTL) { + /* Do not send frames with mesh_ttl == 0 */ + sdata->u.sta.mshstats.dropped_frames_ttl++; + ret = 0; + goto fail; + } + meshhdrlen = ieee80211_new_mesh_header(&mesh_hdr, + sdata); + } + hdrlen = 30; + break; +#endif case IEEE80211_IF_TYPE_STA: fc |= IEEE80211_FCTL_TODS; /* BSSID SA DA */ @@ -1409,10 +1477,17 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, goto fail; } - sta = sta_info_get(local, hdr.addr1); - if (sta) { - sta_flags = sta->flags; - sta_info_put(sta); + /* + * There's no need to try to look up the destination + * if it is a multicast address (which can only happen + * in AP mode) + */ + if (!is_multicast_ether_addr(hdr.addr1)) { + rcu_read_lock(); + sta = sta_info_get(local, hdr.addr1); + if (sta) + sta_flags = sta->flags; + rcu_read_unlock(); } /* receiver is QoS enabled, use a QoS type frame */ @@ -1422,12 +1497,12 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, } /* - * If port access control is enabled, drop frames to unauthorised - * stations unless they are EAPOL frames from the local station. + * Drop unicast frames to unauthorised stations unless they are + * EAPOL frames from the local station. */ - if (unlikely(sdata->ieee802_1x_pac && - !(sta_flags & WLAN_STA_AUTHORIZED) && - !(ethertype == ETH_P_PAE && + if (unlikely(!is_multicast_ether_addr(hdr.addr1) && + !(sta_flags & WLAN_STA_AUTHORIZED) && + !(ethertype == ETH_P_PAE && compare_ether_addr(dev->dev_addr, skb->data + ETH_ALEN) == 0))) { #ifdef CONFIG_MAC80211_VERBOSE_DEBUG @@ -1480,7 +1555,7 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, * build in headroom in __dev_alloc_skb() (linux/skbuff.h) and * alloc_skb() (net/core/skbuff.c) */ - head_need = hdrlen + encaps_len + local->tx_headroom; + head_need = hdrlen + encaps_len + meshhdrlen + local->tx_headroom; head_need -= skb_headroom(skb); /* We are going to modify skb data, so make a copy of it if happens to @@ -1514,6 +1589,12 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, h_pos += encaps_len; } + if (meshhdrlen > 0) { + memcpy(skb_push(skb, meshhdrlen), &mesh_hdr, meshhdrlen); + nh_pos += meshhdrlen; + h_pos += meshhdrlen; + } + if (fc & IEEE80211_STYPE_QOS_DATA) { __le16 *qos_control; @@ -1583,7 +1664,7 @@ void ieee80211_tx_pending(unsigned long data) struct ieee80211_local *local = (struct ieee80211_local *)data; struct net_device *dev = local->mdev; struct ieee80211_tx_stored_packet *store; - struct ieee80211_txrx_data tx; + struct ieee80211_tx_data tx; int i, ret, reschedule = 0; netif_tx_lock_bh(dev); @@ -1595,14 +1676,13 @@ void ieee80211_tx_pending(unsigned long data) continue; } store = &local->pending_packet[i]; - tx.u.tx.control = &store->control; - tx.u.tx.extra_frag = store->extra_frag; - tx.u.tx.num_extra_frag = store->num_extra_frag; - tx.u.tx.last_frag_hwrate = store->last_frag_hwrate; - tx.u.tx.last_frag_rate = store->last_frag_rate; + tx.control = &store->control; + tx.extra_frag = store->extra_frag; + tx.num_extra_frag = store->num_extra_frag; + tx.last_frag_rate = store->last_frag_rate; tx.flags = 0; if (store->last_frag_rate_ctrl_probe) - tx.flags |= IEEE80211_TXRXD_TXPROBE_LAST_FRAG; + tx.flags |= IEEE80211_TX_PROBE_LAST_FRAG; ret = __ieee80211_tx(local, store->skb, &tx); if (ret) { if (ret == IEEE80211_TX_FRAG_AGAIN) @@ -1636,7 +1716,6 @@ static void ieee80211_beacon_add_tim(struct ieee80211_local *local, /* Generate bitmap for TIM only if there are any STAs in power save * mode. */ - read_lock_bh(&local->sta_lock); if (atomic_read(&bss->num_sta_ps) > 0) /* in the hope that this is faster than * checking byte-for-byte */ @@ -1687,7 +1766,6 @@ static void ieee80211_beacon_add_tim(struct ieee80211_local *local, *pos++ = aid0; /* Bitmap control */ *pos++ = 0; /* Part Virt Bitmap */ } - read_unlock_bh(&local->sta_lock); } struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, @@ -1701,16 +1779,96 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, struct ieee80211_if_ap *ap = NULL; struct rate_selection rsel; struct beacon_data *beacon; + struct ieee80211_supported_band *sband; + struct ieee80211_mgmt *mgmt; + int *num_beacons; + bool err = true; + u8 *pos; + + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; rcu_read_lock(); sdata = vif_to_sdata(vif); bdev = sdata->dev; - ap = &sdata->u.ap; - beacon = rcu_dereference(ap->beacon); + if (sdata->vif.type == IEEE80211_IF_TYPE_AP) { + ap = &sdata->u.ap; + beacon = rcu_dereference(ap->beacon); + if (ap && beacon) { + /* + * headroom, head length, + * tail length and maximum TIM length + */ + skb = dev_alloc_skb(local->tx_headroom + + beacon->head_len + + beacon->tail_len + 256); + if (!skb) + goto out; + + skb_reserve(skb, local->tx_headroom); + memcpy(skb_put(skb, beacon->head_len), beacon->head, + beacon->head_len); + + ieee80211_include_sequence(sdata, + (struct ieee80211_hdr *)skb->data); + + /* + * Not very nice, but we want to allow the driver to call + * ieee80211_beacon_get() as a response to the set_tim() + * callback. That, however, is already invoked under the + * sta_lock to guarantee consistent and race-free update + * of the tim bitmap in mac80211 and the driver. + */ + if (local->tim_in_locked_section) { + ieee80211_beacon_add_tim(local, ap, skb, beacon); + } else { + unsigned long flags; + + spin_lock_irqsave(&local->sta_lock, flags); + ieee80211_beacon_add_tim(local, ap, skb, beacon); + spin_unlock_irqrestore(&local->sta_lock, flags); + } + + if (beacon->tail) + memcpy(skb_put(skb, beacon->tail_len), + beacon->tail, beacon->tail_len); - if (!ap || sdata->vif.type != IEEE80211_IF_TYPE_AP || !beacon) { + num_beacons = &ap->num_beacons; + + err = false; + } + } else if (ieee80211_vif_is_mesh(&sdata->vif)) { + /* headroom, head length, tail length and maximum TIM length */ + skb = dev_alloc_skb(local->tx_headroom + 400); + if (!skb) + goto out; + + skb_reserve(skb, local->hw.extra_tx_headroom); + mgmt = (struct ieee80211_mgmt *) + skb_put(skb, 24 + sizeof(mgmt->u.beacon)); + memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon)); + mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT, + IEEE80211_STYPE_BEACON); + memset(mgmt->da, 0xff, ETH_ALEN); + memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN); + /* BSSID is left zeroed, wildcard value */ + mgmt->u.beacon.beacon_int = + cpu_to_le16(local->hw.conf.beacon_int); + mgmt->u.beacon.capab_info = 0x0; /* 0x0 for MPs */ + + pos = skb_put(skb, 2); + *pos++ = WLAN_EID_SSID; + *pos++ = 0x0; + + mesh_mgmt_ies_add(skb, sdata->dev); + + num_beacons = &sdata->u.sta.num_beacons; + + err = false; + } + + if (err) { #ifdef CONFIG_MAC80211_VERBOSE_DEBUG if (net_ratelimit()) printk(KERN_DEBUG "no beacon data avail for %s\n", @@ -1720,27 +1878,8 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, goto out; } - /* headroom, head length, tail length and maximum TIM length */ - skb = dev_alloc_skb(local->tx_headroom + beacon->head_len + - beacon->tail_len + 256); - if (!skb) - goto out; - - skb_reserve(skb, local->tx_headroom); - memcpy(skb_put(skb, beacon->head_len), beacon->head, - beacon->head_len); - - ieee80211_include_sequence(sdata, (struct ieee80211_hdr *)skb->data); - - ieee80211_beacon_add_tim(local, ap, skb, beacon); - - if (beacon->tail) - memcpy(skb_put(skb, beacon->tail_len), beacon->tail, - beacon->tail_len); - if (control) { - rate_control_get_rate(local->mdev, local->oper_hw_mode, skb, - &rsel); + rate_control_get_rate(local->mdev, sband, skb, &rsel); if (!rsel.rate) { if (net_ratelimit()) { printk(KERN_DEBUG "%s: ieee80211_beacon_get: " @@ -1753,20 +1892,17 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, } control->vif = vif; - control->tx_rate = - (sdata->bss_conf.use_short_preamble && - (rsel.rate->flags & IEEE80211_RATE_PREAMBLE2)) ? - rsel.rate->val2 : rsel.rate->val; + control->tx_rate = rsel.rate; + if (sdata->bss_conf.use_short_preamble && + rsel.rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) + control->flags |= IEEE80211_TXCTL_SHORT_PREAMBLE; control->antenna_sel_tx = local->hw.conf.antenna_sel_tx; - control->power_level = local->hw.conf.power_level; control->flags |= IEEE80211_TXCTL_NO_ACK; control->retry_limit = 1; - control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK; + control->flags |= IEEE80211_TXCTL_CLEAR_PS_FILT; } - - ap->num_beacons++; - - out: + (*num_beacons)++; +out: rcu_read_unlock(); return skb; } @@ -1814,8 +1950,8 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct sk_buff *skb; struct sta_info *sta; ieee80211_tx_handler *handler; - struct ieee80211_txrx_data tx; - ieee80211_txrx_result res = TXRX_DROP; + struct ieee80211_tx_data tx; + ieee80211_tx_result res = TX_DROP; struct net_device *bdev; struct ieee80211_sub_if_data *sdata; struct ieee80211_if_ap *bss = NULL; @@ -1836,7 +1972,6 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, rcu_read_unlock(); return NULL; } - rcu_read_unlock(); if (bss->dtim_count != 0) return NULL; /* send buffered bc/mc only after DTIM beacon */ @@ -1862,27 +1997,26 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, dev_kfree_skb_any(skb); } sta = tx.sta; - tx.flags |= IEEE80211_TXRXD_TXPS_BUFFERED; - tx.u.tx.mode = local->hw.conf.mode; + tx.flags |= IEEE80211_TX_PS_BUFFERED; + tx.channel = local->hw.conf.channel; - for (handler = local->tx_handlers; *handler != NULL; handler++) { + for (handler = ieee80211_tx_handlers; *handler != NULL; handler++) { res = (*handler)(&tx); - if (res == TXRX_DROP || res == TXRX_QUEUED) + if (res == TX_DROP || res == TX_QUEUED) break; } skb = tx.skb; /* handlers are allowed to change skb */ - if (res == TXRX_DROP) { + if (res == TX_DROP) { I802_DEBUG_INC(local->tx_handlers_drop); dev_kfree_skb(skb); skb = NULL; - } else if (res == TXRX_QUEUED) { + } else if (res == TX_QUEUED) { I802_DEBUG_INC(local->tx_handlers_queued); skb = NULL; } - if (sta) - sta_info_put(sta); + rcu_read_unlock(); return skb; } diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 5e631ce..cc9f715 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -25,7 +25,8 @@ #include <net/rtnetlink.h> #include "ieee80211_i.h" -#include "ieee80211_rate.h" +#include "rate.h" +#include "mesh.h" #include "wme.h" /* privid for wiphys to determine whether they belong to us or not */ @@ -41,92 +42,6 @@ const unsigned char bridge_tunnel_header[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; -static int rate_list_match(const int *rate_list, int rate) -{ - int i; - - if (!rate_list) - return 0; - - for (i = 0; rate_list[i] >= 0; i++) - if (rate_list[i] == rate) - return 1; - - return 0; -} - -void ieee80211_prepare_rates(struct ieee80211_local *local, - struct ieee80211_hw_mode *mode) -{ - int i; - - for (i = 0; i < mode->num_rates; i++) { - struct ieee80211_rate *rate = &mode->rates[i]; - - rate->flags &= ~(IEEE80211_RATE_SUPPORTED | - IEEE80211_RATE_BASIC); - - if (local->supp_rates[mode->mode]) { - if (!rate_list_match(local->supp_rates[mode->mode], - rate->rate)) - continue; - } - - rate->flags |= IEEE80211_RATE_SUPPORTED; - - /* Use configured basic rate set if it is available. If not, - * use defaults that are sane for most cases. */ - if (local->basic_rates[mode->mode]) { - if (rate_list_match(local->basic_rates[mode->mode], - rate->rate)) - rate->flags |= IEEE80211_RATE_BASIC; - } else switch (mode->mode) { - case MODE_IEEE80211A: - if (rate->rate == 60 || rate->rate == 120 || - rate->rate == 240) - rate->flags |= IEEE80211_RATE_BASIC; - break; - case MODE_IEEE80211B: - if (rate->rate == 10 || rate->rate == 20) - rate->flags |= IEEE80211_RATE_BASIC; - break; - case MODE_IEEE80211G: - if (rate->rate == 10 || rate->rate == 20 || - rate->rate == 55 || rate->rate == 110) - rate->flags |= IEEE80211_RATE_BASIC; - break; - case NUM_IEEE80211_MODES: - /* not useful */ - break; - } - - /* Set ERP and MANDATORY flags based on phymode */ - switch (mode->mode) { - case MODE_IEEE80211A: - if (rate->rate == 60 || rate->rate == 120 || - rate->rate == 240) - rate->flags |= IEEE80211_RATE_MANDATORY; - break; - case MODE_IEEE80211B: - if (rate->rate == 10) - rate->flags |= IEEE80211_RATE_MANDATORY; - break; - case MODE_IEEE80211G: - if (rate->rate == 10 || rate->rate == 20 || - rate->rate == 55 || rate->rate == 110 || - rate->rate == 60 || rate->rate == 120 || - rate->rate == 240) - rate->flags |= IEEE80211_RATE_MANDATORY; - break; - case NUM_IEEE80211_MODES: - /* not useful */ - break; - } - if (ieee80211_is_erp_rate(mode->mode, rate->rate)) - rate->flags |= IEEE80211_RATE_ERP; - } -} - u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, enum ieee80211_if_types type) { @@ -232,17 +147,35 @@ int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb) } EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb); -void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx) +int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr) +{ + int ae = meshhdr->flags & IEEE80211S_FLAGS_AE; + /* 7.1.3.5a.2 */ + switch (ae) { + case 0: + return 5; + case 1: + return 11; + case 2: + return 17; + case 3: + return 23; + default: + return 5; + } +} + +void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data; hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); - if (tx->u.tx.extra_frag) { + if (tx->extra_frag) { struct ieee80211_hdr *fhdr; int i; - for (i = 0; i < tx->u.tx.num_extra_frag; i++) { + for (i = 0; i < tx->num_extra_frag; i++) { fhdr = (struct ieee80211_hdr *) - tx->u.tx.extra_frag[i]->data; + tx->extra_frag[i]->data; fhdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); } } @@ -262,7 +195,7 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, * DIV_ROUND_UP() operations. */ - if (local->hw.conf.phymode == MODE_IEEE80211A || erp) { + if (local->hw.conf.channel->band == IEEE80211_BAND_5GHZ || erp) { /* * OFDM: * @@ -304,15 +237,19 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len, /* Exported duration function for driver use */ __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - size_t frame_len, int rate) + size_t frame_len, + struct ieee80211_rate *rate) { struct ieee80211_local *local = hw_to_local(hw); struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); u16 dur; int erp; - erp = ieee80211_is_erp_rate(hw->conf.phymode, rate); - dur = ieee80211_frame_duration(local, frame_len, rate, erp, + erp = 0; + if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) + erp = rate->flags & IEEE80211_RATE_ERP_G; + + dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, erp, sdata->bss_conf.use_short_preamble); return cpu_to_le16(dur); @@ -332,17 +269,20 @@ __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, short_preamble = sdata->bss_conf.use_short_preamble; - rate = frame_txctl->rts_rate; - erp = !!(rate->flags & IEEE80211_RATE_ERP); + rate = frame_txctl->rts_cts_rate; + + erp = 0; + if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) + erp = rate->flags & IEEE80211_RATE_ERP_G; /* CTS duration */ - dur = ieee80211_frame_duration(local, 10, rate->rate, + dur = ieee80211_frame_duration(local, 10, rate->bitrate, erp, short_preamble); /* Data frame duration */ - dur += ieee80211_frame_duration(local, frame_len, rate->rate, + dur += ieee80211_frame_duration(local, frame_len, rate->bitrate, erp, short_preamble); /* ACK duration */ - dur += ieee80211_frame_duration(local, 10, rate->rate, + dur += ieee80211_frame_duration(local, 10, rate->bitrate, erp, short_preamble); return cpu_to_le16(dur); @@ -363,15 +303,17 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, short_preamble = sdata->bss_conf.use_short_preamble; - rate = frame_txctl->rts_rate; - erp = !!(rate->flags & IEEE80211_RATE_ERP); + rate = frame_txctl->rts_cts_rate; + erp = 0; + if (sdata->flags & IEEE80211_SDATA_OPERATING_GMODE) + erp = rate->flags & IEEE80211_RATE_ERP_G; /* Data frame duration */ - dur = ieee80211_frame_duration(local, frame_len, rate->rate, + dur = ieee80211_frame_duration(local, frame_len, rate->bitrate, erp, short_preamble); if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) { /* ACK duration */ - dur += ieee80211_frame_duration(local, 10, rate->rate, + dur += ieee80211_frame_duration(local, 10, rate->bitrate, erp, short_preamble); } @@ -379,27 +321,6 @@ __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, } EXPORT_SYMBOL(ieee80211_ctstoself_duration); -struct ieee80211_rate * -ieee80211_get_rate(struct ieee80211_local *local, int phymode, int hw_rate) -{ - struct ieee80211_hw_mode *mode; - int r; - - list_for_each_entry(mode, &local->modes_list, list) { - if (mode->mode != phymode) - continue; - for (r = 0; r < mode->num_rates; r++) { - struct ieee80211_rate *rate = &mode->rates[r]; - if (rate->val == hw_rate || - (rate->flags & IEEE80211_RATE_PREAMBLE2 && - rate->val2 == hw_rate)) - return rate; - } - } - - return NULL; -} - void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) { struct ieee80211_local *local = hw_to_local(hw); @@ -480,6 +401,7 @@ void ieee80211_iterate_active_interfaces( case IEEE80211_IF_TYPE_STA: case IEEE80211_IF_TYPE_IBSS: case IEEE80211_IF_TYPE_WDS: + case IEEE80211_IF_TYPE_MESH_POINT: break; } if (sdata->dev == local->mdev) diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c index a0cff72..affcecd 100644 --- a/net/mac80211/wep.c +++ b/net/mac80211/wep.c @@ -305,39 +305,39 @@ u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key) return NULL; } -ieee80211_txrx_result -ieee80211_crypto_wep_decrypt(struct ieee80211_txrx_data *rx) +ieee80211_rx_result +ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx) { if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA && ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT || (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)) - return TXRX_CONTINUE; + return RX_CONTINUE; - if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) { + if (!(rx->status->flag & RX_FLAG_DECRYPTED)) { if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key)) { #ifdef CONFIG_MAC80211_DEBUG if (net_ratelimit()) printk(KERN_DEBUG "%s: RX WEP frame, decrypt " "failed\n", rx->dev->name); #endif /* CONFIG_MAC80211_DEBUG */ - return TXRX_DROP; + return RX_DROP_UNUSABLE; } - } else if (!(rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED)) { + } else if (!(rx->status->flag & RX_FLAG_IV_STRIPPED)) { ieee80211_wep_remove_iv(rx->local, rx->skb, rx->key); /* remove ICV */ skb_trim(rx->skb, rx->skb->len - 4); } - return TXRX_CONTINUE; + return RX_CONTINUE; } -static int wep_encrypt_skb(struct ieee80211_txrx_data *tx, struct sk_buff *skb) +static int wep_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb) { if (!(tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) { if (ieee80211_wep_encrypt(tx->local, skb, tx->key)) return -1; } else { - tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx; + tx->control->key_idx = tx->key->conf.hw_key_idx; if (tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) { if (!ieee80211_wep_add_iv(tx->local, skb, tx->key)) return -1; @@ -346,28 +346,28 @@ static int wep_encrypt_skb(struct ieee80211_txrx_data *tx, struct sk_buff *skb) return 0; } -ieee80211_txrx_result -ieee80211_crypto_wep_encrypt(struct ieee80211_txrx_data *tx) +ieee80211_tx_result +ieee80211_crypto_wep_encrypt(struct ieee80211_tx_data *tx) { - tx->u.tx.control->iv_len = WEP_IV_LEN; - tx->u.tx.control->icv_len = WEP_ICV_LEN; - ieee80211_tx_set_iswep(tx); + tx->control->iv_len = WEP_IV_LEN; + tx->control->icv_len = WEP_ICV_LEN; + ieee80211_tx_set_protected(tx); if (wep_encrypt_skb(tx, tx->skb) < 0) { I802_DEBUG_INC(tx->local->tx_handlers_drop_wep); - return TXRX_DROP; + return TX_DROP; } - if (tx->u.tx.extra_frag) { + if (tx->extra_frag) { int i; - for (i = 0; i < tx->u.tx.num_extra_frag; i++) { - if (wep_encrypt_skb(tx, tx->u.tx.extra_frag[i]) < 0) { + for (i = 0; i < tx->num_extra_frag; i++) { + if (wep_encrypt_skb(tx, tx->extra_frag[i]) < 0) { I802_DEBUG_INC(tx->local-> tx_handlers_drop_wep); - return TXRX_DROP; + return TX_DROP; } } } - return TXRX_CONTINUE; + return TX_CONTINUE; } diff --git a/net/mac80211/wep.h b/net/mac80211/wep.h index 785fbb4..363779c 100644 --- a/net/mac80211/wep.h +++ b/net/mac80211/wep.h @@ -14,7 +14,7 @@ #include <linux/skbuff.h> #include <linux/types.h> #include "ieee80211_i.h" -#include "ieee80211_key.h" +#include "key.h" int ieee80211_wep_init(struct ieee80211_local *local); void ieee80211_wep_free(struct ieee80211_local *local); @@ -28,9 +28,9 @@ int ieee80211_wep_decrypt(struct ieee80211_local *local, struct sk_buff *skb, struct ieee80211_key *key); u8 * ieee80211_wep_is_weak_iv(struct sk_buff *skb, struct ieee80211_key *key); -ieee80211_txrx_result -ieee80211_crypto_wep_decrypt(struct ieee80211_txrx_data *rx); -ieee80211_txrx_result -ieee80211_crypto_wep_encrypt(struct ieee80211_txrx_data *tx); +ieee80211_rx_result +ieee80211_crypto_wep_decrypt(struct ieee80211_rx_data *rx); +ieee80211_tx_result +ieee80211_crypto_wep_encrypt(struct ieee80211_tx_data *tx); #endif /* WEP_H */ diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/wext.c index 5024d37..76e1de1 100644 --- a/net/mac80211/ieee80211_ioctl.c +++ b/net/mac80211/wext.c @@ -21,8 +21,8 @@ #include <net/mac80211.h> #include "ieee80211_i.h" -#include "ieee80211_led.h" -#include "ieee80211_rate.h" +#include "led.h" +#include "rate.h" #include "wpa.h" #include "aes_ccm.h" @@ -33,10 +33,10 @@ static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr, size_t key_len) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - int ret = 0; struct sta_info *sta; struct ieee80211_key *key; struct ieee80211_sub_if_data *sdata; + int err; sdata = IEEE80211_DEV_TO_SUB_IF(dev); @@ -46,59 +46,65 @@ static int ieee80211_set_encryption(struct net_device *dev, u8 *sta_addr, return -EINVAL; } - if (is_broadcast_ether_addr(sta_addr)) { - sta = NULL; - key = sdata->keys[idx]; - } else { - set_tx_key = 0; - /* - * According to the standard, the key index of a pairwise - * key must be zero. However, some AP are broken when it - * comes to WEP key indices, so we work around this. - */ - if (idx != 0 && alg != ALG_WEP) { - printk(KERN_DEBUG "%s: set_encrypt - non-zero idx for " - "individual key\n", dev->name); - return -EINVAL; - } + if (remove) { + rcu_read_lock(); - sta = sta_info_get(local, sta_addr); - if (!sta) { -#ifdef CONFIG_MAC80211_VERBOSE_DEBUG - DECLARE_MAC_BUF(mac); - printk(KERN_DEBUG "%s: set_encrypt - unknown addr " - "%s\n", - dev->name, print_mac(mac, sta_addr)); -#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ + err = 0; - return -ENOENT; + if (is_broadcast_ether_addr(sta_addr)) { + key = sdata->keys[idx]; + } else { + sta = sta_info_get(local, sta_addr); + if (!sta) { + err = -ENOENT; + goto out_unlock; + } + key = sta->key; } - key = sta->key; - } - - if (remove) { ieee80211_key_free(key); - key = NULL; } else { - /* - * Automatically frees any old key if present. - */ - key = ieee80211_key_alloc(sdata, sta, alg, idx, key_len, _key); - if (!key) { - ret = -ENOMEM; - goto err_out; + key = ieee80211_key_alloc(alg, idx, key_len, _key); + if (!key) + return -ENOMEM; + + sta = NULL; + err = 0; + + rcu_read_lock(); + + if (!is_broadcast_ether_addr(sta_addr)) { + set_tx_key = 0; + /* + * According to the standard, the key index of a + * pairwise key must be zero. However, some AP are + * broken when it comes to WEP key indices, so we + * work around this. + */ + if (idx != 0 && alg != ALG_WEP) { + ieee80211_key_free(key); + err = -EINVAL; + goto out_unlock; + } + + sta = sta_info_get(local, sta_addr); + if (!sta) { + ieee80211_key_free(key); + err = -ENOENT; + goto out_unlock; + } } + + ieee80211_key_link(key, sdata, sta); + + if (set_tx_key || (!sta && !sdata->default_key && key)) + ieee80211_set_default_key(sdata, idx); } - if (set_tx_key || (!sta && !sdata->default_key && key)) - ieee80211_set_default_key(sdata, idx); + out_unlock: + rcu_read_unlock(); - ret = 0; - err_out: - if (sta) - sta_info_put(sta); - return ret; + return err; } static int ieee80211_ioctl_siwgenie(struct net_device *dev, @@ -129,22 +135,7 @@ static int ieee80211_ioctl_giwname(struct net_device *dev, struct iw_request_info *info, char *name, char *extra) { - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - - switch (local->hw.conf.phymode) { - case MODE_IEEE80211A: - strcpy(name, "IEEE 802.11a"); - break; - case MODE_IEEE80211B: - strcpy(name, "IEEE 802.11b"); - break; - case MODE_IEEE80211G: - strcpy(name, "IEEE 802.11g"); - break; - default: - strcpy(name, "IEEE 802.11"); - break; - } + strcpy(name, "IEEE 802.11"); return 0; } @@ -156,7 +147,7 @@ static int ieee80211_ioctl_giwrange(struct net_device *dev, { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct iw_range *range = (struct iw_range *) extra; - struct ieee80211_hw_mode *mode = NULL; + enum ieee80211_band band; int c = 0; data->length = sizeof(struct iw_range); @@ -191,24 +182,27 @@ static int ieee80211_ioctl_giwrange(struct net_device *dev, range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 | IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP; - list_for_each_entry(mode, &local->modes_list, list) { - int i = 0; - if (!(local->enabled_modes & (1 << mode->mode)) || - (local->hw_modes & local->enabled_modes & - (1 << MODE_IEEE80211G) && mode->mode == MODE_IEEE80211B)) + for (band = 0; band < IEEE80211_NUM_BANDS; band ++) { + int i; + struct ieee80211_supported_band *sband; + + sband = local->hw.wiphy->bands[band]; + + if (!sband) continue; - while (i < mode->num_channels && c < IW_MAX_FREQUENCIES) { - struct ieee80211_channel *chan = &mode->channels[i]; + for (i = 0; i < sband->n_channels && c < IW_MAX_FREQUENCIES; i++) { + struct ieee80211_channel *chan = &sband->channels[i]; - if (chan->flag & IEEE80211_CHAN_W_SCAN) { - range->freq[c].i = chan->chan; - range->freq[c].m = chan->freq * 100000; - range->freq[c].e = 1; + if (!(chan->flags & IEEE80211_CHAN_DISABLED)) { + range->freq[c].i = + ieee80211_frequency_to_channel( + chan->center_freq); + range->freq[c].m = chan->center_freq; + range->freq[c].e = 6; c++; } - i++; } } range->num_channels = c; @@ -242,6 +236,9 @@ static int ieee80211_ioctl_siwmode(struct net_device *dev, case IW_MODE_ADHOC: type = IEEE80211_IF_TYPE_IBSS; break; + case IW_MODE_REPEAT: + type = IEEE80211_IF_TYPE_WDS; + break; case IW_MODE_MONITOR: type = IEEE80211_IF_TYPE_MNTR; break; @@ -294,31 +291,17 @@ static int ieee80211_ioctl_giwmode(struct net_device *dev, return 0; } -int ieee80211_set_channel(struct ieee80211_local *local, int channel, int freq) +int ieee80211_set_freq(struct ieee80211_local *local, int freqMHz) { - struct ieee80211_hw_mode *mode; - int c, set = 0; int ret = -EINVAL; + struct ieee80211_channel *chan; - list_for_each_entry(mode, &local->modes_list, list) { - if (!(local->enabled_modes & (1 << mode->mode))) - continue; - for (c = 0; c < mode->num_channels; c++) { - struct ieee80211_channel *chan = &mode->channels[c]; - if (chan->flag & IEEE80211_CHAN_W_SCAN && - ((chan->chan == channel) || (chan->freq == freq))) { - local->oper_channel = chan; - local->oper_hw_mode = mode; - set = 1; - break; - } - } - if (set) - break; - } + chan = ieee80211_get_channel(local->hw.wiphy, freqMHz); - if (set) { - if (local->sta_sw_scanning) + if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) { + local->oper_channel = chan; + + if (local->sta_sw_scanning || local->sta_hw_scanning) ret = 0; else ret = ieee80211_hw_config(local); @@ -347,13 +330,14 @@ static int ieee80211_ioctl_siwfreq(struct net_device *dev, IEEE80211_STA_AUTO_CHANNEL_SEL; return 0; } else - return ieee80211_set_channel(local, freq->m, -1); + return ieee80211_set_freq(local, + ieee80211_channel_to_frequency(freq->m)); } else { int i, div = 1000000; for (i = 0; i < freq->e; i++) div /= 10; if (div > 0) - return ieee80211_set_channel(local, -1, freq->m / div); + return ieee80211_set_freq(local, freq->m / div); else return -EINVAL; } @@ -366,10 +350,7 @@ static int ieee80211_ioctl_giwfreq(struct net_device *dev, { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - /* TODO: in station mode (Managed/Ad-hoc) might need to poll low-level - * driver for the current channel with firmware-based management */ - - freq->m = local->hw.conf.freq; + freq->m = local->hw.conf.channel->center_freq; freq->e = 6; return 0; @@ -480,10 +461,20 @@ static int ieee80211_ioctl_siwap(struct net_device *dev, ieee80211_sta_req_auth(dev, &sdata->u.sta); return 0; } else if (sdata->vif.type == IEEE80211_IF_TYPE_WDS) { - if (memcmp(sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data, - ETH_ALEN) == 0) - return 0; - return ieee80211_if_update_wds(dev, (u8 *) &ap_addr->sa_data); + /* + * If it is necessary to update the WDS peer address + * while the interface is running, then we need to do + * more work here, namely if it is running we need to + * add a new and remove the old STA entry, this is + * normally handled by _open() and _stop(). + */ + if (netif_running(dev)) + return -EBUSY; + + memcpy(&sdata->u.wds.remote_addr, (u8 *) &ap_addr->sa_data, + ETH_ALEN); + + return 0; } return -EOPNOTSUPP; @@ -526,6 +517,7 @@ static int ieee80211_ioctl_siwscan(struct net_device *dev, if (sdata->vif.type != IEEE80211_IF_TYPE_STA && sdata->vif.type != IEEE80211_IF_TYPE_IBSS && + sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT && sdata->vif.type != IEEE80211_IF_TYPE_AP) return -EOPNOTSUPP; @@ -566,15 +558,17 @@ static int ieee80211_ioctl_siwrate(struct net_device *dev, struct iw_param *rate, char *extra) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_hw_mode *mode; - int i; + int i, err = -EINVAL; u32 target_rate = rate->value / 100000; struct ieee80211_sub_if_data *sdata; + struct ieee80211_supported_band *sband; sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!sdata->bss) return -ENODEV; - mode = local->oper_hw_mode; + + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + /* target_rate = -1, rate->fixed = 0 means auto only, so use all rates * target_rate = X, rate->fixed = 1 means only rate X * target_rate = X, rate->fixed = 0 means all rates <= X */ @@ -582,18 +576,20 @@ static int ieee80211_ioctl_siwrate(struct net_device *dev, sdata->bss->force_unicast_rateidx = -1; if (rate->value < 0) return 0; - for (i=0; i < mode->num_rates; i++) { - struct ieee80211_rate *rates = &mode->rates[i]; - int this_rate = rates->rate; + + for (i=0; i< sband->n_bitrates; i++) { + struct ieee80211_rate *brate = &sband->bitrates[i]; + int this_rate = brate->bitrate; if (target_rate == this_rate) { sdata->bss->max_ratectrl_rateidx = i; if (rate->fixed) sdata->bss->force_unicast_rateidx = i; - return 0; + err = 0; + break; } } - return -EINVAL; + return err; } static int ieee80211_ioctl_giwrate(struct net_device *dev, @@ -603,19 +599,31 @@ static int ieee80211_ioctl_giwrate(struct net_device *dev, struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct sta_info *sta; struct ieee80211_sub_if_data *sdata; + struct ieee80211_supported_band *sband; sdata = IEEE80211_DEV_TO_SUB_IF(dev); - if (sdata->vif.type == IEEE80211_IF_TYPE_STA) - sta = sta_info_get(local, sdata->u.sta.bssid); - else + + if (sdata->vif.type != IEEE80211_IF_TYPE_STA) return -EOPNOTSUPP; - if (!sta) - return -ENODEV; - if (sta->txrate < local->oper_hw_mode->num_rates) - rate->value = local->oper_hw_mode->rates[sta->txrate].rate * 100000; + + sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; + + rcu_read_lock(); + + sta = sta_info_get(local, sdata->u.sta.bssid); + + if (sta && sta->txrate_idx < sband->n_bitrates) + rate->value = sband->bitrates[sta->txrate_idx].bitrate; else rate->value = 0; - sta_info_put(sta); + + rcu_read_unlock(); + + if (!sta) + return -ENODEV; + + rate->value *= 100000; + return 0; } @@ -625,7 +633,7 @@ static int ieee80211_ioctl_siwtxpower(struct net_device *dev, { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); bool need_reconfig = 0; - u8 new_power_level; + int new_power_level; if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) return -EINVAL; @@ -635,13 +643,15 @@ static int ieee80211_ioctl_siwtxpower(struct net_device *dev, if (data->txpower.fixed) { new_power_level = data->txpower.value; } else { - /* Automatic power level. Get the px power from the current - * channel. */ - struct ieee80211_channel* chan = local->oper_channel; + /* + * Automatic power level. Use maximum power for the current + * channel. Should be part of rate control. + */ + struct ieee80211_channel* chan = local->hw.conf.channel; if (!chan) return -EINVAL; - new_power_level = chan->power_level; + new_power_level = chan->max_power; } if (local->hw.conf.power_level != new_power_level) { @@ -973,6 +983,8 @@ static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta = NULL; + rcu_read_lock(); + if (sdata->vif.type == IEEE80211_IF_TYPE_STA || sdata->vif.type == IEEE80211_IF_TYPE_IBSS) sta = sta_info_get(local, sdata->u.sta.bssid); @@ -988,8 +1000,10 @@ static struct iw_statistics *ieee80211_get_wireless_stats(struct net_device *dev wstats->qual.qual = sta->last_signal; wstats->qual.noise = sta->last_noise; wstats->qual.updated = local->wstats_flags; - sta_info_put(sta); } + + rcu_read_unlock(); + return wstats; } diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c index 4e23659..4e94e40 100644 --- a/net/mac80211/wme.c +++ b/net/mac80211/wme.c @@ -19,10 +19,13 @@ #include "wme.h" /* maximum number of hardware queues we support. */ -#define TC_80211_MAX_QUEUES 8 +#define TC_80211_MAX_QUEUES 16 + +const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 }; struct ieee80211_sched_data { + unsigned long qdisc_pool[BITS_TO_LONGS(TC_80211_MAX_QUEUES)]; struct tcf_proto *filter_list; struct Qdisc *queues[TC_80211_MAX_QUEUES]; struct sk_buff_head requeued[TC_80211_MAX_QUEUES]; @@ -98,7 +101,6 @@ static inline int classify80211(struct sk_buff *skb, struct Qdisc *qd) struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; unsigned short fc = le16_to_cpu(hdr->frame_control); int qos; - const int ieee802_1d_to_ac[8] = { 2, 3, 3, 2, 1, 1, 0, 0 }; /* see if frame is data or non data frame */ if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)) { @@ -146,9 +148,26 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd) unsigned short fc = le16_to_cpu(hdr->frame_control); struct Qdisc *qdisc; int err, queue; + struct sta_info *sta; + u8 tid; if (pkt_data->flags & IEEE80211_TXPD_REQUEUE) { - skb_queue_tail(&q->requeued[pkt_data->queue], skb); + queue = pkt_data->queue; + rcu_read_lock(); + sta = sta_info_get(local, hdr->addr1); + tid = skb->priority & QOS_CONTROL_TAG1D_MASK; + if (sta) { + int ampdu_queue = sta->tid_to_tx_q[tid]; + if ((ampdu_queue < local->hw.queues) && + test_bit(ampdu_queue, q->qdisc_pool)) { + queue = ampdu_queue; + pkt_data->flags |= IEEE80211_TXPD_AMPDU; + } else { + pkt_data->flags &= ~IEEE80211_TXPD_AMPDU; + } + } + rcu_read_unlock(); + skb_queue_tail(&q->requeued[queue], skb); qd->q.qlen++; return 0; } @@ -159,14 +178,31 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd) */ if (WLAN_FC_IS_QOS_DATA(fc)) { u8 *p = skb->data + ieee80211_get_hdrlen(fc) - 2; - u8 qos_hdr = skb->priority & QOS_CONTROL_TAG1D_MASK; + u8 ack_policy = 0; + tid = skb->priority & QOS_CONTROL_TAG1D_MASK; if (local->wifi_wme_noack_test) - qos_hdr |= QOS_CONTROL_ACK_POLICY_NOACK << + ack_policy |= QOS_CONTROL_ACK_POLICY_NOACK << QOS_CONTROL_ACK_POLICY_SHIFT; /* qos header is 2 bytes, second reserved */ - *p = qos_hdr; + *p = ack_policy | tid; p++; *p = 0; + + rcu_read_lock(); + + sta = sta_info_get(local, hdr->addr1); + if (sta) { + int ampdu_queue = sta->tid_to_tx_q[tid]; + if ((ampdu_queue < local->hw.queues) && + test_bit(ampdu_queue, q->qdisc_pool)) { + queue = ampdu_queue; + pkt_data->flags |= IEEE80211_TXPD_AMPDU; + } else { + pkt_data->flags &= ~IEEE80211_TXPD_AMPDU; + } + } + + rcu_read_unlock(); } if (unlikely(queue >= local->hw.queues)) { @@ -184,6 +220,7 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd) kfree_skb(skb); err = NET_XMIT_DROP; } else { + tid = skb->priority & QOS_CONTROL_TAG1D_MASK; pkt_data->queue = (unsigned int) queue; qdisc = q->queues[queue]; err = qdisc->enqueue(skb, qdisc); @@ -235,10 +272,11 @@ static struct sk_buff *wme_qdiscop_dequeue(struct Qdisc* qd) /* check all the h/w queues in numeric/priority order */ for (queue = 0; queue < hw->queues; queue++) { /* see if there is room in this hardware queue */ - if (test_bit(IEEE80211_LINK_STATE_XOFF, - &local->state[queue]) || - test_bit(IEEE80211_LINK_STATE_PENDING, - &local->state[queue])) + if ((test_bit(IEEE80211_LINK_STATE_XOFF, + &local->state[queue])) || + (test_bit(IEEE80211_LINK_STATE_PENDING, + &local->state[queue])) || + (!test_bit(queue, q->qdisc_pool))) continue; /* there is space - try and get a frame */ @@ -360,6 +398,10 @@ static int wme_qdiscop_init(struct Qdisc *qd, struct nlattr *opt) } } + /* reserve all legacy QoS queues */ + for (i = 0; i < min(IEEE80211_TX_QUEUE_DATA4, queues); i++) + set_bit(i, q->qdisc_pool); + return err; } @@ -605,3 +647,80 @@ void ieee80211_wme_unregister(void) { unregister_qdisc(&wme_qdisc_ops); } + +int ieee80211_ht_agg_queue_add(struct ieee80211_local *local, + struct sta_info *sta, u16 tid) +{ + int i; + struct ieee80211_sched_data *q = + qdisc_priv(local->mdev->qdisc_sleeping); + DECLARE_MAC_BUF(mac); + + /* prepare the filter and save it for the SW queue + * matching the recieved HW queue */ + + /* try to get a Qdisc from the pool */ + for (i = IEEE80211_TX_QUEUE_BEACON; i < local->hw.queues; i++) + if (!test_and_set_bit(i, q->qdisc_pool)) { + ieee80211_stop_queue(local_to_hw(local), i); + sta->tid_to_tx_q[tid] = i; + + /* IF there are already pending packets + * on this tid first we need to drain them + * on the previous queue + * since HT is strict in order */ +#ifdef CONFIG_MAC80211_HT_DEBUG + if (net_ratelimit()) + printk(KERN_DEBUG "allocated aggregation queue" + " %d tid %d addr %s pool=0x%lX", + i, tid, print_mac(mac, sta->addr), + q->qdisc_pool[0]); +#endif /* CONFIG_MAC80211_HT_DEBUG */ + return 0; + } + + return -EAGAIN; +} + +/** + * the caller needs to hold local->mdev->queue_lock + */ +void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local, + struct sta_info *sta, u16 tid, + u8 requeue) +{ + struct ieee80211_sched_data *q = + qdisc_priv(local->mdev->qdisc_sleeping); + int agg_queue = sta->tid_to_tx_q[tid]; + + /* return the qdisc to the pool */ + clear_bit(agg_queue, q->qdisc_pool); + sta->tid_to_tx_q[tid] = local->hw.queues; + + if (requeue) + ieee80211_requeue(local, agg_queue); + else + q->queues[agg_queue]->ops->reset(q->queues[agg_queue]); +} + +void ieee80211_requeue(struct ieee80211_local *local, int queue) +{ + struct Qdisc *root_qd = local->mdev->qdisc_sleeping; + struct ieee80211_sched_data *q = qdisc_priv(root_qd); + struct Qdisc *qdisc = q->queues[queue]; + struct sk_buff *skb = NULL; + u32 len = qdisc->q.qlen; + + if (!qdisc || !qdisc->dequeue) + return; + + printk(KERN_DEBUG "requeue: qlen = %d\n", qdisc->q.qlen); + for (len = qdisc->q.qlen; len > 0; len--) { + skb = qdisc->dequeue(qdisc); + root_qd->q.qlen--; + /* packet will be classified again and */ + /* skb->packet_data->queue will be overridden if needed */ + if (skb) + wme_qdiscop_enqueue(skb, root_qd); + } +} diff --git a/net/mac80211/wme.h b/net/mac80211/wme.h index 76c713a..fcc6b05 100644 --- a/net/mac80211/wme.h +++ b/net/mac80211/wme.h @@ -24,6 +24,8 @@ #define QOS_CONTROL_TAG1D_MASK 0x07 +extern const int ieee802_1d_to_ac[8]; + static inline int WLAN_FC_IS_QOS_DATA(u16 fc) { return (fc & 0x8C) == 0x88; @@ -32,7 +34,12 @@ static inline int WLAN_FC_IS_QOS_DATA(u16 fc) #ifdef CONFIG_NET_SCHED void ieee80211_install_qdisc(struct net_device *dev); int ieee80211_qdisc_installed(struct net_device *dev); - +int ieee80211_ht_agg_queue_add(struct ieee80211_local *local, + struct sta_info *sta, u16 tid); +void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local, + struct sta_info *sta, u16 tid, + u8 requeue); +void ieee80211_requeue(struct ieee80211_local *local, int queue); int ieee80211_wme_register(void); void ieee80211_wme_unregister(void); #else @@ -43,7 +50,19 @@ static inline int ieee80211_qdisc_installed(struct net_device *dev) { return 0; } - +static inline int ieee80211_ht_agg_queue_add(struct ieee80211_local *local, + struct sta_info *sta, u16 tid) +{ + return -EAGAIN; +} +static inline void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local, + struct sta_info *sta, u16 tid, + u8 requeue) +{ +} +static inline void ieee80211_requeue(struct ieee80211_local *local, int queue) +{ +} static inline int ieee80211_wme_register(void) { return 0; diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c index 6f04311..45709ad 100644 --- a/net/mac80211/wpa.c +++ b/net/mac80211/wpa.c @@ -70,8 +70,8 @@ static int ieee80211_get_hdr_info(const struct sk_buff *skb, u8 **sa, u8 **da, } -ieee80211_txrx_result -ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx) +ieee80211_tx_result +ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx) { u8 *data, *sa, *da, *key, *mic, qos_tid; size_t data_len; @@ -84,18 +84,18 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx) if (!tx->key || tx->key->conf.alg != ALG_TKIP || skb->len < 24 || !WLAN_FC_DATA_PRESENT(fc)) - return TXRX_CONTINUE; + return TX_CONTINUE; if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len)) - return TXRX_DROP; + return TX_DROP; if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) && - !(tx->flags & IEEE80211_TXRXD_FRAGMENTED) && + !(tx->flags & IEEE80211_TX_FRAGMENTED) && !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) && !wpa_test) { /* hwaccel - with no need for preallocated room for Michael MIC */ - return TXRX_CONTINUE; + return TX_CONTINUE; } if (skb_tailroom(skb) < MICHAEL_MIC_LEN) { @@ -105,7 +105,7 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx) GFP_ATOMIC))) { printk(KERN_DEBUG "%s: failed to allocate more memory " "for Michael MIC\n", tx->dev->name); - return TXRX_DROP; + return TX_DROP; } } @@ -119,12 +119,12 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx) mic = skb_put(skb, MICHAEL_MIC_LEN); michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic); - return TXRX_CONTINUE; + return TX_CONTINUE; } -ieee80211_txrx_result -ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx) +ieee80211_rx_result +ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx) { u8 *data, *sa, *da, *key = NULL, qos_tid; size_t data_len; @@ -139,16 +139,16 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx) /* * No way to verify the MIC if the hardware stripped it */ - if (rx->u.rx.status->flag & RX_FLAG_MMIC_STRIPPED) - return TXRX_CONTINUE; + if (rx->status->flag & RX_FLAG_MMIC_STRIPPED) + return RX_CONTINUE; if (!rx->key || rx->key->conf.alg != ALG_TKIP || !(rx->fc & IEEE80211_FCTL_PROTECTED) || !WLAN_FC_DATA_PRESENT(fc)) - return TXRX_CONTINUE; + return RX_CONTINUE; if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len) || data_len < MICHAEL_MIC_LEN) - return TXRX_DROP; + return RX_DROP_UNUSABLE; data_len -= MICHAEL_MIC_LEN; @@ -161,29 +161,29 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx) ALG_TKIP_TEMP_AUTH_TX_MIC_KEY]; michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic); if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0 || wpa_test) { - if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) - return TXRX_DROP; + if (!(rx->flags & IEEE80211_RX_RA_MATCH)) + return RX_DROP_UNUSABLE; printk(KERN_DEBUG "%s: invalid Michael MIC in data frame from " "%s\n", rx->dev->name, print_mac(mac, sa)); mac80211_ev_michael_mic_failure(rx->dev, rx->key->conf.keyidx, (void *) skb->data); - return TXRX_DROP; + return RX_DROP_UNUSABLE; } /* remove Michael MIC from payload */ skb_trim(skb, skb->len - MICHAEL_MIC_LEN); /* update IV in key information to be able to detect replays */ - rx->key->u.tkip.iv32_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv32; - rx->key->u.tkip.iv16_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv16; + rx->key->u.tkip.iv32_rx[rx->queue] = rx->tkip_iv32; + rx->key->u.tkip.iv16_rx[rx->queue] = rx->tkip_iv16; - return TXRX_CONTINUE; + return RX_CONTINUE; } -static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx, +static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb, int test) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; @@ -228,7 +228,7 @@ static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx, 0x7f), (u8) key->u.tkip.iv16); - tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx; + tx->control->key_idx = tx->key->conf.hw_key_idx; return 0; } @@ -242,42 +242,42 @@ static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx, } -ieee80211_txrx_result -ieee80211_crypto_tkip_encrypt(struct ieee80211_txrx_data *tx) +ieee80211_tx_result +ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx) { struct sk_buff *skb = tx->skb; int wpa_test = 0, test = 0; - tx->u.tx.control->icv_len = TKIP_ICV_LEN; - tx->u.tx.control->iv_len = TKIP_IV_LEN; - ieee80211_tx_set_iswep(tx); + tx->control->icv_len = TKIP_ICV_LEN; + tx->control->iv_len = TKIP_IV_LEN; + ieee80211_tx_set_protected(tx); if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) && !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) && !wpa_test) { /* hwaccel - with no need for preallocated room for IV/ICV */ - tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx; - return TXRX_CONTINUE; + tx->control->key_idx = tx->key->conf.hw_key_idx; + return TX_CONTINUE; } if (tkip_encrypt_skb(tx, skb, test) < 0) - return TXRX_DROP; + return TX_DROP; - if (tx->u.tx.extra_frag) { + if (tx->extra_frag) { int i; - for (i = 0; i < tx->u.tx.num_extra_frag; i++) { - if (tkip_encrypt_skb(tx, tx->u.tx.extra_frag[i], test) + for (i = 0; i < tx->num_extra_frag; i++) { + if (tkip_encrypt_skb(tx, tx->extra_frag[i], test) < 0) - return TXRX_DROP; + return TX_DROP; } } - return TXRX_CONTINUE; + return TX_CONTINUE; } -ieee80211_txrx_result -ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx) +ieee80211_rx_result +ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data; u16 fc; @@ -290,19 +290,19 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx) hdrlen = ieee80211_get_hdrlen(fc); if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) - return TXRX_CONTINUE; + return RX_CONTINUE; if (!rx->sta || skb->len - hdrlen < 12) - return TXRX_DROP; + return RX_DROP_UNUSABLE; - if (rx->u.rx.status->flag & RX_FLAG_DECRYPTED) { - if (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED) { + if (rx->status->flag & RX_FLAG_DECRYPTED) { + if (rx->status->flag & RX_FLAG_IV_STRIPPED) { /* * Hardware took care of all processing, including * replay protection, and stripped the ICV/IV so * we cannot do any checks here. */ - return TXRX_CONTINUE; + return RX_CONTINUE; } /* let TKIP code verify IV, but skip decryption */ @@ -312,9 +312,9 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx) res = ieee80211_tkip_decrypt_data(rx->local->wep_rx_tfm, key, skb->data + hdrlen, skb->len - hdrlen, rx->sta->addr, - hwaccel, rx->u.rx.queue, - &rx->u.rx.tkip_iv32, - &rx->u.rx.tkip_iv16); + hdr->addr1, hwaccel, rx->queue, + &rx->tkip_iv32, + &rx->tkip_iv16); if (res != TKIP_DECRYPT_OK || wpa_test) { #ifdef CONFIG_MAC80211_DEBUG if (net_ratelimit()) @@ -322,7 +322,7 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx) "frame from %s (res=%d)\n", rx->dev->name, print_mac(mac, rx->sta->addr), res); #endif /* CONFIG_MAC80211_DEBUG */ - return TXRX_DROP; + return RX_DROP_UNUSABLE; } /* Trim ICV */ @@ -332,7 +332,7 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx) memmove(skb->data + TKIP_IV_LEN, skb->data, hdrlen); skb_pull(skb, TKIP_IV_LEN); - return TXRX_CONTINUE; + return RX_CONTINUE; } @@ -429,7 +429,7 @@ static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr) } -static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx, +static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb, int test) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; @@ -478,7 +478,7 @@ static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx, if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) { /* hwaccel - with preallocated room for CCMP header */ - tx->u.tx.control->key_idx = key->conf.hw_key_idx; + tx->control->key_idx = key->conf.hw_key_idx; return 0; } @@ -491,42 +491,42 @@ static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx, } -ieee80211_txrx_result -ieee80211_crypto_ccmp_encrypt(struct ieee80211_txrx_data *tx) +ieee80211_tx_result +ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx) { struct sk_buff *skb = tx->skb; int test = 0; - tx->u.tx.control->icv_len = CCMP_MIC_LEN; - tx->u.tx.control->iv_len = CCMP_HDR_LEN; - ieee80211_tx_set_iswep(tx); + tx->control->icv_len = CCMP_MIC_LEN; + tx->control->iv_len = CCMP_HDR_LEN; + ieee80211_tx_set_protected(tx); if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) && !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { /* hwaccel - with no need for preallocated room for CCMP " * header or MIC fields */ - tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx; - return TXRX_CONTINUE; + tx->control->key_idx = tx->key->conf.hw_key_idx; + return TX_CONTINUE; } if (ccmp_encrypt_skb(tx, skb, test) < 0) - return TXRX_DROP; + return TX_DROP; - if (tx->u.tx.extra_frag) { + if (tx->extra_frag) { int i; - for (i = 0; i < tx->u.tx.num_extra_frag; i++) { - if (ccmp_encrypt_skb(tx, tx->u.tx.extra_frag[i], test) + for (i = 0; i < tx->num_extra_frag; i++) { + if (ccmp_encrypt_skb(tx, tx->extra_frag[i], test) < 0) - return TXRX_DROP; + return TX_DROP; } } - return TXRX_CONTINUE; + return TX_CONTINUE; } -ieee80211_txrx_result -ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx) +ieee80211_rx_result +ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data; u16 fc; @@ -541,21 +541,21 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx) hdrlen = ieee80211_get_hdrlen(fc); if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) - return TXRX_CONTINUE; + return RX_CONTINUE; data_len = skb->len - hdrlen - CCMP_HDR_LEN - CCMP_MIC_LEN; if (!rx->sta || data_len < 0) - return TXRX_DROP; + return RX_DROP_UNUSABLE; - if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) && - (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED)) - return TXRX_CONTINUE; + if ((rx->status->flag & RX_FLAG_DECRYPTED) && + (rx->status->flag & RX_FLAG_IV_STRIPPED)) + return RX_CONTINUE; (void) ccmp_hdr2pn(pn, skb->data + hdrlen); - if (memcmp(pn, key->u.ccmp.rx_pn[rx->u.rx.queue], CCMP_PN_LEN) <= 0) { + if (memcmp(pn, key->u.ccmp.rx_pn[rx->queue], CCMP_PN_LEN) <= 0) { #ifdef CONFIG_MAC80211_DEBUG - u8 *ppn = key->u.ccmp.rx_pn[rx->u.rx.queue]; + u8 *ppn = key->u.ccmp.rx_pn[rx->queue]; printk(KERN_DEBUG "%s: CCMP replay detected for RX frame from " "%s (RX PN %02x%02x%02x%02x%02x%02x <= prev. PN " @@ -565,10 +565,10 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx) ppn[0], ppn[1], ppn[2], ppn[3], ppn[4], ppn[5]); #endif /* CONFIG_MAC80211_DEBUG */ key->u.ccmp.replays++; - return TXRX_DROP; + return RX_DROP_UNUSABLE; } - if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) { + if (!(rx->status->flag & RX_FLAG_DECRYPTED)) { /* hardware didn't decrypt/verify MIC */ u8 *scratch, *b_0, *aad; @@ -589,16 +589,16 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx) "for RX frame from %s\n", rx->dev->name, print_mac(mac, rx->sta->addr)); #endif /* CONFIG_MAC80211_DEBUG */ - return TXRX_DROP; + return RX_DROP_UNUSABLE; } } - memcpy(key->u.ccmp.rx_pn[rx->u.rx.queue], pn, CCMP_PN_LEN); + memcpy(key->u.ccmp.rx_pn[rx->queue], pn, CCMP_PN_LEN); /* Remove CCMP header and MIC */ skb_trim(skb, skb->len - CCMP_MIC_LEN); memmove(skb->data + CCMP_HDR_LEN, skb->data, hdrlen); skb_pull(skb, CCMP_HDR_LEN); - return TXRX_CONTINUE; + return RX_CONTINUE; } diff --git a/net/mac80211/wpa.h b/net/mac80211/wpa.h index 49d80cf..d42d221 100644 --- a/net/mac80211/wpa.h +++ b/net/mac80211/wpa.h @@ -13,19 +13,19 @@ #include <linux/types.h> #include "ieee80211_i.h" -ieee80211_txrx_result -ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx); -ieee80211_txrx_result -ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx); +ieee80211_tx_result +ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx); +ieee80211_rx_result +ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx); -ieee80211_txrx_result -ieee80211_crypto_tkip_encrypt(struct ieee80211_txrx_data *tx); -ieee80211_txrx_result -ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx); +ieee80211_tx_result +ieee80211_crypto_tkip_encrypt(struct ieee80211_tx_data *tx); +ieee80211_rx_result +ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx); -ieee80211_txrx_result -ieee80211_crypto_ccmp_encrypt(struct ieee80211_txrx_data *tx); -ieee80211_txrx_result -ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx); +ieee80211_tx_result +ieee80211_crypto_ccmp_encrypt(struct ieee80211_tx_data *tx); +ieee80211_rx_result +ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx); #endif /* WPA_H */ |