diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/Kconfig | 11 | ||||
| -rw-r--r-- | net/mac80211/Makefile | 2 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 15 | ||||
| -rw-r--r-- | net/mac80211/main.c | 61 | ||||
| -rw-r--r-- | net/mac80211/util.c | 14 | ||||
| -rw-r--r-- | net/mac80211/wme.c | 602 | ||||
| -rw-r--r-- | net/mac80211/wme.h | 35 |
7 files changed, 124 insertions, 616 deletions
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig index 10579de..80d6933 100644 --- a/net/mac80211/Kconfig +++ b/net/mac80211/Kconfig @@ -11,17 +11,6 @@ config MAC80211 This option enables the hardware independent IEEE 802.11 networking stack. -config MAC80211_QOS - def_bool y - depends on MAC80211 - depends on NET_SCHED - depends on BROKEN - -comment "QoS/HT support disabled" - depends on MAC80211 && !MAC80211_QOS -comment "QoS/HT support needs CONFIG_NET_SCHED" - depends on MAC80211 && !NET_SCHED - menu "Rate control algorithm selection" depends on MAC80211 != n diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile index fa47438..a169b02 100644 --- a/net/mac80211/Makefile +++ b/net/mac80211/Makefile @@ -18,10 +18,10 @@ mac80211-y := \ tx.o \ key.o \ util.o \ + wme.o \ event.o mac80211-$(CONFIG_MAC80211_LEDS) += led.o -mac80211-$(CONFIG_MAC80211_QOS) += wme.o mac80211-$(CONFIG_MAC80211_DEBUGFS) += \ debugfs.o \ debugfs_sta.o \ diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index cbea015..a4f9a83 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -25,6 +25,7 @@ #include <linux/etherdevice.h> #include <net/wireless.h> #include <net/iw_handler.h> +#include <net/mac80211.h> #include "key.h" #include "sta_info.h" @@ -537,6 +538,9 @@ enum { IEEE80211_ADDBA_MSG = 4, }; +/* maximum number of hardware queues we support. */ +#define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES) + struct ieee80211_local { /* embed the driver visible part. * don't cast (use the static inlines below), but we keep @@ -545,6 +549,8 @@ struct ieee80211_local { const struct ieee80211_ops *ops; + unsigned long queue_pool[BITS_TO_LONGS(QD_MAX_QUEUES)]; + struct net_device *mdev; /* wmaster# - "master" 802.11 device */ int open_count; int monitors, cooked_mntrs; @@ -740,15 +746,6 @@ struct ieee80211_local { #endif }; -static inline int ieee80211_is_multiqueue(struct ieee80211_local *local) -{ -#ifdef CONFIG_MAC80211_QOS - return netif_is_multiqueue(local->mdev); -#else - return 0; -#endif -} - static inline struct ieee80211_sub_if_data * IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) { diff --git a/net/mac80211/main.c b/net/mac80211/main.c index c74607e..f1a83d4 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -114,7 +114,7 @@ static int ieee80211_master_open(struct net_device *dev) if (res) return res; - netif_start_queue(local->mdev); + netif_tx_start_all_queues(local->mdev); return 0; } @@ -375,7 +375,7 @@ static int ieee80211_open(struct net_device *dev) queue_work(local->hw.workqueue, &ifsta->work); } - netif_start_queue(dev); + netif_tx_start_all_queues(dev); return 0; err_del_interface: @@ -400,7 +400,7 @@ static int ieee80211_stop(struct net_device *dev) /* * Stop TX on this interface first. */ - netif_stop_queue(dev); + netif_tx_stop_all_queues(dev); /* * Now delete all active aggregation sessions. @@ -554,7 +554,6 @@ static int ieee80211_stop(struct net_device *dev) int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) { struct ieee80211_local *local = hw_to_local(hw); - struct netdev_queue *txq; struct sta_info *sta; struct ieee80211_sub_if_data *sdata; u16 start_seq_num = 0; @@ -619,11 +618,6 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) (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 */ - txq = netdev_get_tx_queue(local->mdev, 0); - spin_lock_bh(&txq->lock); - /* create a new queue for this aggregation */ ret = ieee80211_ht_agg_queue_add(local, sta, tid); @@ -650,7 +644,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) /* 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); + 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); @@ -661,7 +655,6 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) /* Will put all the packets in the new SW queue */ ieee80211_requeue(local, ieee802_1d_to_ac[tid]); - spin_unlock_bh(&txq->lock); spin_unlock_bh(&sta->lock); /* send an addBA request */ @@ -687,7 +680,6 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) err_unlock_queue: kfree(sta->ampdu_mlme.tid_tx[tid]); sta->ampdu_mlme.tid_tx[tid] = NULL; - spin_unlock_bh(&txq->lock); ret = -EBUSY; err_unlock_sta: spin_unlock_bh(&sta->lock); @@ -812,7 +804,6 @@ 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 netdev_queue *txq; struct sta_info *sta; u8 *state; int agg_queue; @@ -844,8 +835,9 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) state = &sta->ampdu_mlme.tid_state_tx[tid]; /* NOTE: no need to use sta->lock in this state check, as - * ieee80211_stop_tx_ba_session will let only - * one stop call to pass through per sta/tid */ + * ieee80211_stop_tx_ba_session will let only one stop call to + * pass through per sta/tid + */ if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) { #ifdef CONFIG_MAC80211_HT_DEBUG printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n"); @@ -860,19 +852,14 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid) agg_queue = sta->tid_to_tx_q[tid]; - /* avoid ordering issues: we are the only one that can modify - * the content of the qdiscs */ - txq = netdev_get_tx_queue(local->mdev, 0); - spin_lock_bh(&txq->lock); - /* remove the queue for this aggregation */ ieee80211_ht_agg_queue_remove(local, sta, tid, 1); - spin_unlock_bh(&txq->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_queue. - * ieee80211_wake_queue is not used here as this queue is not - * necessarily stopped */ - netif_schedule_queue(txq); + /* We just requeued the all the frames that were in the + * removed queue, and since we might miss a softirq we do + * netif_schedule_queue. ieee80211_wake_queue is not used + * here as this queue is not necessarily stopped + */ + netif_schedule_queue(netdev_get_tx_queue(local->mdev, agg_queue)); spin_lock_bh(&sta->lock); *state = HT_AGG_STATE_IDLE; sta->ampdu_mlme.addba_req_num[tid] = 0; @@ -1660,17 +1647,12 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) * We use the number of queues for feature tests (QoS, HT) internally * so restrict them appropriately. */ -#ifdef CONFIG_MAC80211_QOS if (hw->queues > IEEE80211_MAX_QUEUES) hw->queues = IEEE80211_MAX_QUEUES; if (hw->ampdu_queues > IEEE80211_MAX_AMPDU_QUEUES) hw->ampdu_queues = IEEE80211_MAX_AMPDU_QUEUES; if (hw->queues < 4) hw->ampdu_queues = 0; -#else - hw->queues = 1; - hw->ampdu_queues = 0; -#endif mdev = alloc_netdev_mq(sizeof(struct wireless_dev), "wmaster%d", ether_setup, @@ -1754,7 +1736,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) goto fail_wep; } - ieee80211_install_qdisc(local->mdev); + local->mdev->select_queue = ieee80211_select_queue; /* add one default STA interface */ result = ieee80211_if_add(local, "wlan%d", NULL, @@ -1852,23 +1834,11 @@ static int __init ieee80211_init(void) ret = rc80211_pid_init(); if (ret) - goto out; - - ret = ieee80211_wme_register(); - if (ret) { - printk(KERN_DEBUG "ieee80211_init: failed to " - "initialize WME (err=%d)\n", ret); - goto out_cleanup_pid; - } + return ret; ieee80211_debugfs_netdev_init(); return 0; - - out_cleanup_pid: - rc80211_pid_exit(); - out: - return ret; } static void __exit ieee80211_exit(void) @@ -1884,7 +1854,6 @@ static void __exit ieee80211_exit(void) if (mesh_allocated) ieee80211s_stop(); - ieee80211_wme_unregister(); ieee80211_debugfs_netdev_exit(); } diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 89ce4e0..19f85e1 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -363,12 +363,7 @@ void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue) if (test_bit(queue, local->queues_pending)) { tasklet_schedule(&local->tx_pending_tasklet); } else { - if (ieee80211_is_multiqueue(local)) { - netif_wake_subqueue(local->mdev, queue); - } else { - WARN_ON(queue != 0); - netif_wake_queue(local->mdev); - } + netif_wake_subqueue(local->mdev, queue); } } EXPORT_SYMBOL(ieee80211_wake_queue); @@ -377,12 +372,7 @@ void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue) { struct ieee80211_local *local = hw_to_local(hw); - if (ieee80211_is_multiqueue(local)) { - netif_stop_subqueue(local->mdev, queue); - } else { - WARN_ON(queue != 0); - netif_stop_queue(local->mdev); - } + netif_stop_subqueue(local->mdev, queue); } EXPORT_SYMBOL(ieee80211_stop_queue); diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c index f014cd3..b21cfec 100644 --- a/net/mac80211/wme.c +++ b/net/mac80211/wme.c @@ -18,67 +18,42 @@ #include "ieee80211_i.h" #include "wme.h" -/* maximum number of hardware queues we support. */ -#define QD_MAX_QUEUES (IEEE80211_MAX_AMPDU_QUEUES + IEEE80211_MAX_QUEUES) -/* current number of hardware queues we support. */ -#define QD_NUM(hw) ((hw)->queues + (hw)->ampdu_queues) - -/* - * Default mapping in classifier to work with default +/* Default mapping in classifier to work with default * queue setup. */ 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(QD_MAX_QUEUES)]; - struct tcf_proto *filter_list; - struct Qdisc *queues[QD_MAX_QUEUES]; - struct sk_buff_head requeued[QD_MAX_QUEUES]; -}; - static const char llc_ip_hdr[8] = {0xAA, 0xAA, 0x3, 0, 0, 0, 0x08, 0}; -/* given a data frame determine the 802.1p/1d tag to use */ -static inline unsigned classify_1d(struct sk_buff *skb, struct Qdisc *qd) +/* Given a data frame determine the 802.1p/1d tag to use. */ +static unsigned int classify_1d(struct sk_buff *skb) { - struct iphdr *ip; - int dscp; - int offset; - - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct tcf_result res = { -1, 0 }; - - /* if there is a user set filter list, call out to that */ - if (q->filter_list) { - tc_classify(skb, q->filter_list, &res); - if (res.class != -1) - return res.class; - } + unsigned int dscp; /* skb->priority values from 256->263 are magic values to - * directly indicate a specific 802.1d priority. - * This is used to allow 802.1d priority to be passed directly in - * from VLAN tags, etc. */ + * directly indicate a specific 802.1d priority. This is used + * to allow 802.1d priority to be passed directly in from VLAN + * tags, etc. + */ if (skb->priority >= 256 && skb->priority <= 263) return skb->priority - 256; - /* check there is a valid IP header present */ - offset = ieee80211_get_hdrlen_from_skb(skb); - if (skb->len < offset + sizeof(llc_ip_hdr) + sizeof(*ip) || - memcmp(skb->data + offset, llc_ip_hdr, sizeof(llc_ip_hdr))) - return 0; + switch (skb->protocol) { + case __constant_htons(ETH_P_IP): + dscp = ip_hdr(skb)->tos & 0xfc; + break; - ip = (struct iphdr *) (skb->data + offset + sizeof(llc_ip_hdr)); + default: + return 0; + } - dscp = ip->tos & 0xfc; if (dscp & 0x1c) return 0; return dscp >> 5; } -static inline int wme_downgrade_ac(struct sk_buff *skb) +static int wme_downgrade_ac(struct sk_buff *skb) { switch (skb->priority) { case 6: @@ -99,11 +74,10 @@ static inline int wme_downgrade_ac(struct sk_buff *skb) } -/* positive return value indicates which queue to use - * negative return value indicates to drop the frame */ -static int classify80211(struct sk_buff *skb, struct Qdisc *qd) +/* Indicate which queue to use. */ +static u16 classify80211(struct sk_buff *skb, struct net_device *dev) { - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; if (!ieee80211_is_data(hdr->frame_control)) { @@ -123,13 +97,15 @@ static int classify80211(struct sk_buff *skb, struct Qdisc *qd) /* use the data classifier to determine what 802.1d tag the * data frame has */ - skb->priority = classify_1d(skb, qd); + skb->priority = classify_1d(skb); /* in case we are a client verify acm is not set for this ac */ while (unlikely(local->wmm_acm & BIT(skb->priority))) { if (wme_downgrade_ac(skb)) { - /* No AC with lower priority has acm=0, drop packet. */ - return -1; + /* The old code would drop the packet in this + * case. + */ + return 0; } } @@ -137,28 +113,29 @@ static int classify80211(struct sk_buff *skb, struct Qdisc *qd) return ieee802_1d_to_ac[skb->priority]; } - -static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd) +u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb) { - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - struct Qdisc *qdisc; + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct sta_info *sta; - int err, queue; + u16 queue; u8 tid; + queue = classify80211(skb, dev); + if (unlikely(queue >= local->hw.queues)) + queue = local->hw.queues - 1; + if (info->flags & IEEE80211_TX_CTL_REQUEUE) { - queue = skb_get_queue_mapping(skb); rcu_read_lock(); sta = sta_info_get(local, hdr->addr1); tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK; if (sta) { + struct ieee80211_hw *hw = &local->hw; int ampdu_queue = sta->tid_to_tx_q[tid]; - if ((ampdu_queue < QD_NUM(hw)) && - test_bit(ampdu_queue, q->qdisc_pool)) { + + if ((ampdu_queue < ieee80211_num_queues(hw)) && + test_bit(ampdu_queue, local->queue_pool)) { queue = ampdu_queue; info->flags |= IEEE80211_TX_CTL_AMPDU; } else { @@ -166,17 +143,12 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd) } } rcu_read_unlock(); - skb_queue_tail(&q->requeued[queue], skb); - qd->q.qlen++; - return 0; - } - - queue = classify80211(skb, qd); - if (unlikely(queue >= local->hw.queues)) - queue = local->hw.queues - 1; + return queue; + } - /* now we know the 1d priority, fill in the QoS header if there is one + /* Now we know the 1d priority, fill in the QoS header if + * there is one. */ if (ieee80211_is_data_qos(hdr->frame_control)) { u8 *p = ieee80211_get_qos_ctl(hdr); @@ -194,8 +166,10 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd) sta = sta_info_get(local, hdr->addr1); if (sta) { int ampdu_queue = sta->tid_to_tx_q[tid]; - if ((ampdu_queue < QD_NUM(hw)) && - test_bit(ampdu_queue, q->qdisc_pool)) { + struct ieee80211_hw *hw = &local->hw; + + if ((ampdu_queue < ieee80211_num_queues(hw)) && + test_bit(ampdu_queue, local->queue_pool)) { queue = ampdu_queue; info->flags |= IEEE80211_TX_CTL_AMPDU; } else { @@ -206,421 +180,13 @@ static int wme_qdiscop_enqueue(struct sk_buff *skb, struct Qdisc* qd) rcu_read_unlock(); } - if (unlikely(queue < 0)) { - kfree_skb(skb); - err = NET_XMIT_DROP; - } else { - skb_set_queue_mapping(skb, queue); - qdisc = q->queues[queue]; - err = qdisc->enqueue(skb, qdisc); - if (err == NET_XMIT_SUCCESS) { - qd->q.qlen++; - qd->bstats.bytes += skb->len; - qd->bstats.packets++; - return NET_XMIT_SUCCESS; - } - } - qd->qstats.drops++; - return err; -} - - -/* TODO: clean up the cases where master_hard_start_xmit - * returns non 0 - it shouldn't ever do that. Once done we - * can remove this function */ -static int wme_qdiscop_requeue(struct sk_buff *skb, struct Qdisc* qd) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct Qdisc *qdisc; - int err; - - /* we recorded which queue to use earlier! */ - qdisc = q->queues[skb_get_queue_mapping(skb)]; - - if ((err = qdisc->ops->requeue(skb, qdisc)) == 0) { - qd->q.qlen++; - return 0; - } - qd->qstats.drops++; - return err; -} - - -static struct sk_buff *wme_qdiscop_dequeue(struct Qdisc* qd) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct net_device *dev = qdisc_dev(qd); - struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - struct sk_buff *skb; - struct Qdisc *qdisc; - int queue; - - /* check all the h/w queues in numeric/priority order */ - for (queue = 0; queue < QD_NUM(hw); queue++) { - /* see if there is room in this hardware queue */ - if (__netif_subqueue_stopped(local->mdev, queue) || - !test_bit(queue, q->qdisc_pool)) - continue; - - /* there is space - try and get a frame */ - skb = skb_dequeue(&q->requeued[queue]); - if (skb) { - qd->q.qlen--; - return skb; - } - - qdisc = q->queues[queue]; - skb = qdisc->dequeue(qdisc); - if (skb) { - qd->q.qlen--; - return skb; - } - } - /* returning a NULL here when all the h/w queues are full means we - * never need to call netif_stop_queue in the driver */ - return NULL; -} - - -static void wme_qdiscop_reset(struct Qdisc* qd) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - int queue; - - /* QUESTION: should we have some hardware flush functionality here? */ - - for (queue = 0; queue < QD_NUM(hw); queue++) { - skb_queue_purge(&q->requeued[queue]); - qdisc_reset(q->queues[queue]); - } - qd->q.qlen = 0; -} - - -static void wme_qdiscop_destroy(struct Qdisc* qd) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - int queue; - - tcf_destroy_chain(&q->filter_list); - - for (queue = 0; queue < QD_NUM(hw); queue++) { - skb_queue_purge(&q->requeued[queue]); - qdisc_destroy(q->queues[queue]); - q->queues[queue] = &noop_qdisc; - } -} - - -/* called whenever parameters are updated on existing qdisc */ -static int wme_qdiscop_tune(struct Qdisc *qd, struct nlattr *opt) -{ - return 0; -} - - -/* called during initial creation of qdisc on device */ -static int wme_qdiscop_init(struct Qdisc *qd, struct nlattr *opt) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct net_device *dev = qdisc_dev(qd); - struct ieee80211_local *local; - struct ieee80211_hw *hw; - int err = 0, i; - - /* check that device is a mac80211 device */ - if (!dev->ieee80211_ptr || - dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid) - return -EINVAL; - - local = wdev_priv(dev->ieee80211_ptr); - hw = &local->hw; - - /* only allow on master dev */ - if (dev != local->mdev) - return -EINVAL; - - /* ensure that we are root qdisc */ - if (qd->parent != TC_H_ROOT) - return -EINVAL; - - if (qd->flags & TCQ_F_INGRESS) - return -EINVAL; - - /* if options were passed in, set them */ - if (opt) - err = wme_qdiscop_tune(qd, opt); - - /* create child queues */ - for (i = 0; i < QD_NUM(hw); i++) { - skb_queue_head_init(&q->requeued[i]); - q->queues[i] = qdisc_create_dflt(qdisc_dev(qd), qd->dev_queue, - &pfifo_qdisc_ops, - qd->handle); - if (!q->queues[i]) { - q->queues[i] = &noop_qdisc; - printk(KERN_ERR "%s child qdisc %i creation failed\n", - dev->name, i); - } - } - - /* non-aggregation queues: reserve/mark as used */ - for (i = 0; i < local->hw.queues; i++) - set_bit(i, q->qdisc_pool); - - return err; -} - -static int wme_qdiscop_dump(struct Qdisc *qd, struct sk_buff *skb) -{ - return -1; -} - - -static int wme_classop_graft(struct Qdisc *qd, unsigned long arg, - struct Qdisc *new, struct Qdisc **old) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - unsigned long queue = arg - 1; - - if (queue >= QD_NUM(hw)) - return -EINVAL; - - if (!new) - new = &noop_qdisc; - - sch_tree_lock(qd); - *old = q->queues[queue]; - q->queues[queue] = new; - qdisc_reset(*old); - sch_tree_unlock(qd); - - return 0; -} - - -static struct Qdisc * -wme_classop_leaf(struct Qdisc *qd, unsigned long arg) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - unsigned long queue = arg - 1; - - if (queue >= QD_NUM(hw)) - return NULL; - - return q->queues[queue]; -} - - -static unsigned long wme_classop_get(struct Qdisc *qd, u32 classid) -{ - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - unsigned long queue = TC_H_MIN(classid); - - if (queue - 1 >= QD_NUM(hw)) - return 0; - return queue; } - -static unsigned long wme_classop_bind(struct Qdisc *qd, unsigned long parent, - u32 classid) -{ - return wme_classop_get(qd, classid); -} - - -static void wme_classop_put(struct Qdisc *q, unsigned long cl) -{ -} - - -static int wme_classop_change(struct Qdisc *qd, u32 handle, u32 parent, - struct nlattr **tca, unsigned long *arg) -{ - unsigned long cl = *arg; - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - - if (cl - 1 > QD_NUM(hw)) - return -ENOENT; - - /* TODO: put code to program hardware queue parameters here, - * to allow programming from tc command line */ - - return 0; -} - - -/* we don't support deleting hardware queues - * when we add WMM-SA support - TSPECs may be deleted here */ -static int wme_classop_delete(struct Qdisc *qd, unsigned long cl) -{ - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - - if (cl - 1 > QD_NUM(hw)) - return -ENOENT; - return 0; -} - - -static int wme_classop_dump_class(struct Qdisc *qd, unsigned long cl, - struct sk_buff *skb, struct tcmsg *tcm) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - - if (cl - 1 > QD_NUM(hw)) - return -ENOENT; - tcm->tcm_handle = TC_H_MIN(cl); - tcm->tcm_parent = qd->handle; - tcm->tcm_info = q->queues[cl-1]->handle; /* do we need this? */ - return 0; -} - - -static void wme_classop_walk(struct Qdisc *qd, struct qdisc_walker *arg) -{ - struct ieee80211_local *local = wdev_priv(qdisc_dev(qd)->ieee80211_ptr); - struct ieee80211_hw *hw = &local->hw; - int queue; - - if (arg->stop) - return; - - for (queue = 0; queue < QD_NUM(hw); queue++) { - if (arg->count < arg->skip) { - arg->count++; - continue; - } - /* we should return classids for our internal queues here - * as well as the external ones */ - if (arg->fn(qd, queue+1, arg) < 0) { - arg->stop = 1; - break; - } - arg->count++; - } -} - - -static struct tcf_proto ** wme_classop_find_tcf(struct Qdisc *qd, - unsigned long cl) -{ - struct ieee80211_sched_data *q = qdisc_priv(qd); - - if (cl) - return NULL; - - return &q->filter_list; -} - - -/* this qdisc is classful (i.e. has classes, some of which may have leaf qdiscs attached) - * - these are the operations on the classes */ -static const struct Qdisc_class_ops class_ops = -{ - .graft = wme_classop_graft, - .leaf = wme_classop_leaf, - - .get = wme_classop_get, - .put = wme_classop_put, - .change = wme_classop_change, - .delete = wme_classop_delete, - .walk = wme_classop_walk, - - .tcf_chain = wme_classop_find_tcf, - .bind_tcf = wme_classop_bind, - .unbind_tcf = wme_classop_put, - - .dump = wme_classop_dump_class, -}; - - -/* queueing discipline operations */ -static struct Qdisc_ops wme_qdisc_ops __read_mostly = -{ - .next = NULL, - .cl_ops = &class_ops, - .id = "ieee80211", - .priv_size = sizeof(struct ieee80211_sched_data), - - .enqueue = wme_qdiscop_enqueue, - .dequeue = wme_qdiscop_dequeue, - .requeue = wme_qdiscop_requeue, - .drop = NULL, /* drop not needed since we are always the root qdisc */ - - .init = wme_qdiscop_init, - .reset = wme_qdiscop_reset, - .destroy = wme_qdiscop_destroy, - .change = wme_qdiscop_tune, - - .dump = wme_qdiscop_dump, -}; - - -void ieee80211_install_qdisc(struct net_device *dev) -{ - struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); - struct Qdisc *qdisc; - - qdisc = qdisc_create_dflt(dev, txq, - &wme_qdisc_ops, TC_H_ROOT); - if (!qdisc) { - printk(KERN_ERR "%s: qdisc installation failed\n", dev->name); - return; - } - - /* same handle as would be allocated by qdisc_alloc_handle() */ - qdisc->handle = 0x80010000; - - qdisc_lock_tree(dev); - list_add_tail(&qdisc->list, &txq->qdisc_list); - txq->qdisc_sleeping = qdisc; - qdisc_unlock_tree(dev); -} - - -int ieee80211_qdisc_installed(struct net_device *dev) -{ - struct netdev_queue *txq = netdev_get_tx_queue(dev, 0); - - return txq->qdisc_sleeping->ops == &wme_qdisc_ops; -} - - -int ieee80211_wme_register(void) -{ - return register_qdisc(&wme_qdisc_ops); -} - - -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) + struct sta_info *sta, u16 tid) { int i; - struct netdev_queue *txq = netdev_get_tx_queue(local->mdev, 0); - struct ieee80211_sched_data *q = - qdisc_priv(txq->qdisc_sleeping); - DECLARE_MAC_BUF(mac); /* prepare the filter and save it for the SW queue * matching the received HW queue */ @@ -629,8 +195,8 @@ int ieee80211_ht_agg_queue_add(struct ieee80211_local *local, return -EPERM; /* try to get a Qdisc from the pool */ - for (i = local->hw.queues; i < QD_NUM(&local->hw); i++) - if (!test_and_set_bit(i, q->qdisc_pool)) { + for (i = local->hw.queues; i < ieee80211_num_queues(&local->hw); i++) + if (!test_and_set_bit(i, local->queue_pool)) { ieee80211_stop_queue(local_to_hw(local), i); sta->tid_to_tx_q[tid] = i; @@ -639,11 +205,13 @@ int ieee80211_ht_agg_queue_add(struct ieee80211_local *local, * on the previous queue * since HT is strict in order */ #ifdef CONFIG_MAC80211_HT_DEBUG - if (net_ratelimit()) + if (net_ratelimit()) { + DECLARE_MAC_BUF(mac); printk(KERN_DEBUG "allocated aggregation queue" " %d tid %d addr %s pool=0x%lX\n", i, tid, print_mac(mac, sta->addr), - q->qdisc_pool[0]); + local->queue_pool[0]); + } #endif /* CONFIG_MAC80211_HT_DEBUG */ return 0; } @@ -658,40 +226,68 @@ void ieee80211_ht_agg_queue_remove(struct ieee80211_local *local, struct sta_info *sta, u16 tid, u8 requeue) { - struct ieee80211_hw *hw = &local->hw; - struct netdev_queue *txq = netdev_get_tx_queue(local->mdev, 0); - struct ieee80211_sched_data *q = - qdisc_priv(txq->qdisc_sleeping); int agg_queue = sta->tid_to_tx_q[tid]; + struct ieee80211_hw *hw = &local->hw; /* return the qdisc to the pool */ - clear_bit(agg_queue, q->qdisc_pool); - sta->tid_to_tx_q[tid] = QD_NUM(hw); + clear_bit(agg_queue, local->queue_pool); + sta->tid_to_tx_q[tid] = ieee80211_num_queues(hw); - if (requeue) + if (requeue) { ieee80211_requeue(local, agg_queue); - else - q->queues[agg_queue]->ops->reset(q->queues[agg_queue]); + } else { + struct netdev_queue *txq; + + txq = netdev_get_tx_queue(local->mdev, agg_queue); + + spin_lock_bh(&txq->lock); + qdisc_reset(txq->qdisc); + spin_unlock_bh(&txq->lock); + } } void ieee80211_requeue(struct ieee80211_local *local, int queue) { - struct netdev_queue *txq = netdev_get_tx_queue(local->mdev, 0); - struct Qdisc *root_qd = txq->qdisc_sleeping; - struct ieee80211_sched_data *q = qdisc_priv(root_qd); - struct Qdisc *qdisc = q->queues[queue]; - struct sk_buff *skb = NULL; + struct netdev_queue *txq = netdev_get_tx_queue(local->mdev, queue); + struct sk_buff_head list; + struct Qdisc *qdisc; u32 len; + rcu_read_lock_bh(); + + qdisc = rcu_dereference(txq->qdisc); if (!qdisc || !qdisc->dequeue) - return; + goto out_unlock; + + skb_queue_head_init(&list); + spin_lock(&txq->lock); 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 */ + struct sk_buff *skb = qdisc->dequeue(qdisc); + if (skb) - wme_qdiscop_enqueue(skb, root_qd); + __skb_queue_tail(&list, skb); + } + spin_unlock(&txq->lock); + + for (len = list.qlen; len > 0; len--) { + struct sk_buff *skb = __skb_dequeue(&list); + u16 new_queue; + + BUG_ON(!skb); + new_queue = ieee80211_select_queue(local->mdev, skb); + skb_set_queue_mapping(skb, new_queue); + + txq = netdev_get_tx_queue(local->mdev, new_queue); + + spin_lock(&txq->lock); + + qdisc = rcu_dereference(txq->qdisc); + qdisc->enqueue(skb, qdisc); + + spin_unlock(&txq->lock); } + +out_unlock: + rcu_read_unlock_bh(); } diff --git a/net/mac80211/wme.h b/net/mac80211/wme.h index 1aca609..04de28c 100644 --- a/net/mac80211/wme.h +++ b/net/mac80211/wme.h @@ -23,45 +23,12 @@ extern const int ieee802_1d_to_ac[8]; -#ifdef CONFIG_MAC80211_QOS -void ieee80211_install_qdisc(struct net_device *dev); -int ieee80211_qdisc_installed(struct net_device *dev); +u16 ieee80211_select_queue(struct net_device *dev, struct sk_buff *skb); 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 -static inline void ieee80211_install_qdisc(struct net_device *dev) -{ -} -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; -} -static inline void ieee80211_wme_unregister(void) -{ -} -#endif /* CONFIG_NET_SCHED */ #endif /* _WME_H */ |