diff options
author | Kalle Valo <kvalo@codeaurora.org> | 2015-11-17 19:07:19 (GMT) |
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committer | Kalle Valo <kvalo@codeaurora.org> | 2015-11-18 12:28:30 (GMT) |
commit | f988d64010ec058a206dce083b5c791ce09caa48 (patch) | |
tree | c9f55006dfb8662409e92a9b1122ef114becf99c /drivers/net/wireless/libertas/cfg.c | |
parent | e705c12146aa9c69ca498d4ebb83ba7138f9b41f (diff) | |
download | linux-f988d64010ec058a206dce083b5c791ce09caa48.tar.xz |
libertas: move under marvell vendor directory
Part of reorganising wireless drivers directory and Kconfig.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/libertas/cfg.c')
-rw-r--r-- | drivers/net/wireless/libertas/cfg.c | 2215 |
1 files changed, 0 insertions, 2215 deletions
diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c deleted file mode 100644 index 8317afd..0000000 --- a/drivers/net/wireless/libertas/cfg.c +++ /dev/null @@ -1,2215 +0,0 @@ -/* - * Implement cfg80211 ("iw") support. - * - * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany - * Holger Schurig <hs4233@mail.mn-solutions.de> - * - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/hardirq.h> -#include <linux/sched.h> -#include <linux/wait.h> -#include <linux/slab.h> -#include <linux/ieee80211.h> -#include <net/cfg80211.h> -#include <asm/unaligned.h> - -#include "decl.h" -#include "cfg.h" -#include "cmd.h" -#include "mesh.h" - - -#define CHAN2G(_channel, _freq, _flags) { \ - .band = IEEE80211_BAND_2GHZ, \ - .center_freq = (_freq), \ - .hw_value = (_channel), \ - .flags = (_flags), \ - .max_antenna_gain = 0, \ - .max_power = 30, \ -} - -static struct ieee80211_channel lbs_2ghz_channels[] = { - CHAN2G(1, 2412, 0), - CHAN2G(2, 2417, 0), - CHAN2G(3, 2422, 0), - CHAN2G(4, 2427, 0), - CHAN2G(5, 2432, 0), - CHAN2G(6, 2437, 0), - CHAN2G(7, 2442, 0), - CHAN2G(8, 2447, 0), - CHAN2G(9, 2452, 0), - CHAN2G(10, 2457, 0), - CHAN2G(11, 2462, 0), - CHAN2G(12, 2467, 0), - CHAN2G(13, 2472, 0), - CHAN2G(14, 2484, 0), -}; - -#define RATETAB_ENT(_rate, _hw_value, _flags) { \ - .bitrate = (_rate), \ - .hw_value = (_hw_value), \ - .flags = (_flags), \ -} - - -/* Table 6 in section 3.2.1.1 */ -static struct ieee80211_rate lbs_rates[] = { - RATETAB_ENT(10, 0, 0), - RATETAB_ENT(20, 1, 0), - RATETAB_ENT(55, 2, 0), - RATETAB_ENT(110, 3, 0), - RATETAB_ENT(60, 9, 0), - RATETAB_ENT(90, 6, 0), - RATETAB_ENT(120, 7, 0), - RATETAB_ENT(180, 8, 0), - RATETAB_ENT(240, 9, 0), - RATETAB_ENT(360, 10, 0), - RATETAB_ENT(480, 11, 0), - RATETAB_ENT(540, 12, 0), -}; - -static struct ieee80211_supported_band lbs_band_2ghz = { - .channels = lbs_2ghz_channels, - .n_channels = ARRAY_SIZE(lbs_2ghz_channels), - .bitrates = lbs_rates, - .n_bitrates = ARRAY_SIZE(lbs_rates), -}; - - -static const u32 cipher_suites[] = { - WLAN_CIPHER_SUITE_WEP40, - WLAN_CIPHER_SUITE_WEP104, - WLAN_CIPHER_SUITE_TKIP, - WLAN_CIPHER_SUITE_CCMP, -}; - -/* Time to stay on the channel */ -#define LBS_DWELL_PASSIVE 100 -#define LBS_DWELL_ACTIVE 40 - - -/*************************************************************************** - * Misc utility functions - * - * TLVs are Marvell specific. They are very similar to IEs, they have the - * same structure: type, length, data*. The only difference: for IEs, the - * type and length are u8, but for TLVs they're __le16. - */ - -/* - * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1 - * in the firmware spec - */ -static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type) -{ - int ret = -ENOTSUPP; - - switch (auth_type) { - case NL80211_AUTHTYPE_OPEN_SYSTEM: - case NL80211_AUTHTYPE_SHARED_KEY: - ret = auth_type; - break; - case NL80211_AUTHTYPE_AUTOMATIC: - ret = NL80211_AUTHTYPE_OPEN_SYSTEM; - break; - case NL80211_AUTHTYPE_NETWORK_EAP: - ret = 0x80; - break; - default: - /* silence compiler */ - break; - } - return ret; -} - - -/* - * Various firmware commands need the list of supported rates, but with - * the hight-bit set for basic rates - */ -static int lbs_add_rates(u8 *rates) -{ - size_t i; - - for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) { - u8 rate = lbs_rates[i].bitrate / 5; - if (rate == 0x02 || rate == 0x04 || - rate == 0x0b || rate == 0x16) - rate |= 0x80; - rates[i] = rate; - } - return ARRAY_SIZE(lbs_rates); -} - - -/*************************************************************************** - * TLV utility functions - * - * TLVs are Marvell specific. They are very similar to IEs, they have the - * same structure: type, length, data*. The only difference: for IEs, the - * type and length are u8, but for TLVs they're __le16. - */ - - -/* - * Add ssid TLV - */ -#define LBS_MAX_SSID_TLV_SIZE \ - (sizeof(struct mrvl_ie_header) \ - + IEEE80211_MAX_SSID_LEN) - -static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len) -{ - struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv; - - /* - * TLV-ID SSID 00 00 - * length 06 00 - * ssid 4d 4e 54 45 53 54 - */ - ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID); - ssid_tlv->header.len = cpu_to_le16(ssid_len); - memcpy(ssid_tlv->ssid, ssid, ssid_len); - return sizeof(ssid_tlv->header) + ssid_len; -} - - -/* - * Add channel list TLV (section 8.4.2) - * - * Actual channel data comes from priv->wdev->wiphy->channels. - */ -#define LBS_MAX_CHANNEL_LIST_TLV_SIZE \ - (sizeof(struct mrvl_ie_header) \ - + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset))) - -static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv, - int last_channel, int active_scan) -{ - int chanscanparamsize = sizeof(struct chanscanparamset) * - (last_channel - priv->scan_channel); - - struct mrvl_ie_header *header = (void *) tlv; - - /* - * TLV-ID CHANLIST 01 01 - * length 0e 00 - * channel 00 01 00 00 00 64 00 - * radio type 00 - * channel 01 - * scan type 00 - * min scan time 00 00 - * max scan time 64 00 - * channel 2 00 02 00 00 00 64 00 - * - */ - - header->type = cpu_to_le16(TLV_TYPE_CHANLIST); - header->len = cpu_to_le16(chanscanparamsize); - tlv += sizeof(struct mrvl_ie_header); - - /* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel, - last_channel); */ - memset(tlv, 0, chanscanparamsize); - - while (priv->scan_channel < last_channel) { - struct chanscanparamset *param = (void *) tlv; - - param->radiotype = CMD_SCAN_RADIO_TYPE_BG; - param->channumber = - priv->scan_req->channels[priv->scan_channel]->hw_value; - if (active_scan) { - param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE); - } else { - param->chanscanmode.passivescan = 1; - param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE); - } - tlv += sizeof(struct chanscanparamset); - priv->scan_channel++; - } - return sizeof(struct mrvl_ie_header) + chanscanparamsize; -} - - -/* - * Add rates TLV - * - * The rates are in lbs_bg_rates[], but for the 802.11b - * rates the high bit is set. We add this TLV only because - * there's a firmware which otherwise doesn't report all - * APs in range. - */ -#define LBS_MAX_RATES_TLV_SIZE \ - (sizeof(struct mrvl_ie_header) \ - + (ARRAY_SIZE(lbs_rates))) - -/* Adds a TLV with all rates the hardware supports */ -static int lbs_add_supported_rates_tlv(u8 *tlv) -{ - size_t i; - struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv; - - /* - * TLV-ID RATES 01 00 - * length 0e 00 - * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c - */ - rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES); - tlv += sizeof(rate_tlv->header); - i = lbs_add_rates(tlv); - tlv += i; - rate_tlv->header.len = cpu_to_le16(i); - return sizeof(rate_tlv->header) + i; -} - -/* Add common rates from a TLV and return the new end of the TLV */ -static u8 * -add_ie_rates(u8 *tlv, const u8 *ie, int *nrates) -{ - int hw, ap, ap_max = ie[1]; - u8 hw_rate; - - /* Advance past IE header */ - ie += 2; - - lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max); - - for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) { - hw_rate = lbs_rates[hw].bitrate / 5; - for (ap = 0; ap < ap_max; ap++) { - if (hw_rate == (ie[ap] & 0x7f)) { - *tlv++ = ie[ap]; - *nrates = *nrates + 1; - } - } - } - return tlv; -} - -/* - * Adds a TLV with all rates the hardware *and* BSS supports. - */ -static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss) -{ - struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv; - const u8 *rates_eid, *ext_rates_eid; - int n = 0; - - rcu_read_lock(); - rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES); - ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES); - - /* - * 01 00 TLV_TYPE_RATES - * 04 00 len - * 82 84 8b 96 rates - */ - rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES); - tlv += sizeof(rate_tlv->header); - - /* Add basic rates */ - if (rates_eid) { - tlv = add_ie_rates(tlv, rates_eid, &n); - - /* Add extended rates, if any */ - if (ext_rates_eid) - tlv = add_ie_rates(tlv, ext_rates_eid, &n); - } else { - lbs_deb_assoc("assoc: bss had no basic rate IE\n"); - /* Fallback: add basic 802.11b rates */ - *tlv++ = 0x82; - *tlv++ = 0x84; - *tlv++ = 0x8b; - *tlv++ = 0x96; - n = 4; - } - rcu_read_unlock(); - - rate_tlv->header.len = cpu_to_le16(n); - return sizeof(rate_tlv->header) + n; -} - - -/* - * Add auth type TLV. - * - * This is only needed for newer firmware (V9 and up). - */ -#define LBS_MAX_AUTH_TYPE_TLV_SIZE \ - sizeof(struct mrvl_ie_auth_type) - -static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type) -{ - struct mrvl_ie_auth_type *auth = (void *) tlv; - - /* - * 1f 01 TLV_TYPE_AUTH_TYPE - * 01 00 len - * 01 auth type - */ - auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE); - auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header)); - auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type)); - return sizeof(*auth); -} - - -/* - * Add channel (phy ds) TLV - */ -#define LBS_MAX_CHANNEL_TLV_SIZE \ - sizeof(struct mrvl_ie_header) - -static int lbs_add_channel_tlv(u8 *tlv, u8 channel) -{ - struct mrvl_ie_ds_param_set *ds = (void *) tlv; - - /* - * 03 00 TLV_TYPE_PHY_DS - * 01 00 len - * 06 channel - */ - ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS); - ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header)); - ds->channel = channel; - return sizeof(*ds); -} - - -/* - * Add (empty) CF param TLV of the form: - */ -#define LBS_MAX_CF_PARAM_TLV_SIZE \ - sizeof(struct mrvl_ie_header) - -static int lbs_add_cf_param_tlv(u8 *tlv) -{ - struct mrvl_ie_cf_param_set *cf = (void *)tlv; - - /* - * 04 00 TLV_TYPE_CF - * 06 00 len - * 00 cfpcnt - * 00 cfpperiod - * 00 00 cfpmaxduration - * 00 00 cfpdurationremaining - */ - cf->header.type = cpu_to_le16(TLV_TYPE_CF); - cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header)); - return sizeof(*cf); -} - -/* - * Add WPA TLV - */ -#define LBS_MAX_WPA_TLV_SIZE \ - (sizeof(struct mrvl_ie_header) \ - + 128 /* TODO: I guessed the size */) - -static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len) -{ - size_t tlv_len; - - /* - * We need just convert an IE to an TLV. IEs use u8 for the header, - * u8 type - * u8 len - * u8[] data - * but TLVs use __le16 instead: - * __le16 type - * __le16 len - * u8[] data - */ - *tlv++ = *ie++; - *tlv++ = 0; - tlv_len = *tlv++ = *ie++; - *tlv++ = 0; - while (tlv_len--) - *tlv++ = *ie++; - /* the TLV is two bytes larger than the IE */ - return ie_len + 2; -} - -/* - * Set Channel - */ - -static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy, - struct cfg80211_chan_def *chandef) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - int ret = -ENOTSUPP; - - lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d", - chandef->chan->center_freq, - cfg80211_get_chandef_type(chandef)); - - if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT) - goto out; - - ret = lbs_set_channel(priv, chandef->chan->hw_value); - - out: - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - -static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy, - struct net_device *netdev, - struct ieee80211_channel *channel) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - int ret = -ENOTSUPP; - - lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d", - netdev_name(netdev), channel->center_freq); - - if (netdev != priv->mesh_dev) - goto out; - - ret = lbs_mesh_set_channel(priv, channel->hw_value); - - out: - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - - - -/* - * Scanning - */ - -/* - * When scanning, the firmware doesn't send a nul packet with the power-safe - * bit to the AP. So we cannot stay away from our current channel too long, - * otherwise we loose data. So take a "nap" while scanning every other - * while. - */ -#define LBS_SCAN_BEFORE_NAP 4 - - -/* - * When the firmware reports back a scan-result, it gives us an "u8 rssi", - * which isn't really an RSSI, as it becomes larger when moving away from - * the AP. Anyway, we need to convert that into mBm. - */ -#define LBS_SCAN_RSSI_TO_MBM(rssi) \ - ((-(int)rssi + 3)*100) - -static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy, - struct cmd_header *resp) -{ - struct cfg80211_bss *bss; - struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp; - int bsssize; - const u8 *pos; - const u8 *tsfdesc; - int tsfsize; - int i; - int ret = -EILSEQ; - - lbs_deb_enter(LBS_DEB_CFG80211); - - bsssize = get_unaligned_le16(&scanresp->bssdescriptsize); - - lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n", - scanresp->nr_sets, bsssize, le16_to_cpu(resp->size)); - - if (scanresp->nr_sets == 0) { - ret = 0; - goto done; - } - - /* - * The general layout of the scan response is described in chapter - * 5.7.1. Basically we have a common part, then any number of BSS - * descriptor sections. Finally we have section with the same number - * of TSFs. - * - * cmd_ds_802_11_scan_rsp - * cmd_header - * pos_size - * nr_sets - * bssdesc 1 - * bssid - * rssi - * timestamp - * intvl - * capa - * IEs - * bssdesc 2 - * bssdesc n - * MrvlIEtypes_TsfFimestamp_t - * TSF for BSS 1 - * TSF for BSS 2 - * TSF for BSS n - */ - - pos = scanresp->bssdesc_and_tlvbuffer; - - lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer, - scanresp->bssdescriptsize); - - tsfdesc = pos + bsssize; - tsfsize = 4 + 8 * scanresp->nr_sets; - lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize); - - /* Validity check: we expect a Marvell-Local TLV */ - i = get_unaligned_le16(tsfdesc); - tsfdesc += 2; - if (i != TLV_TYPE_TSFTIMESTAMP) { - lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i); - goto done; - } - - /* - * Validity check: the TLV holds TSF values with 8 bytes each, so - * the size in the TLV must match the nr_sets value - */ - i = get_unaligned_le16(tsfdesc); - tsfdesc += 2; - if (i / 8 != scanresp->nr_sets) { - lbs_deb_scan("scan response: invalid number of TSF timestamp " - "sets (expected %d got %d)\n", scanresp->nr_sets, - i / 8); - goto done; - } - - for (i = 0; i < scanresp->nr_sets; i++) { - const u8 *bssid; - const u8 *ie; - int left; - int ielen; - int rssi; - u16 intvl; - u16 capa; - int chan_no = -1; - const u8 *ssid = NULL; - u8 ssid_len = 0; - - int len = get_unaligned_le16(pos); - pos += 2; - - /* BSSID */ - bssid = pos; - pos += ETH_ALEN; - /* RSSI */ - rssi = *pos++; - /* Packet time stamp */ - pos += 8; - /* Beacon interval */ - intvl = get_unaligned_le16(pos); - pos += 2; - /* Capabilities */ - capa = get_unaligned_le16(pos); - pos += 2; - - /* To find out the channel, we must parse the IEs */ - ie = pos; - /* - * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon - * interval, capabilities - */ - ielen = left = len - (6 + 1 + 8 + 2 + 2); - while (left >= 2) { - u8 id, elen; - id = *pos++; - elen = *pos++; - left -= 2; - if (elen > left) { - lbs_deb_scan("scan response: invalid IE fmt\n"); - goto done; - } - - if (id == WLAN_EID_DS_PARAMS) - chan_no = *pos; - if (id == WLAN_EID_SSID) { - ssid = pos; - ssid_len = elen; - } - left -= elen; - pos += elen; - } - - /* No channel, no luck */ - if (chan_no != -1) { - struct wiphy *wiphy = priv->wdev->wiphy; - int freq = ieee80211_channel_to_frequency(chan_no, - IEEE80211_BAND_2GHZ); - struct ieee80211_channel *channel = - ieee80211_get_channel(wiphy, freq); - - lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n", - bssid, capa, chan_no, ssid_len, ssid, - LBS_SCAN_RSSI_TO_MBM(rssi)/100); - - if (channel && - !(channel->flags & IEEE80211_CHAN_DISABLED)) { - bss = cfg80211_inform_bss(wiphy, channel, - CFG80211_BSS_FTYPE_UNKNOWN, - bssid, get_unaligned_le64(tsfdesc), - capa, intvl, ie, ielen, - LBS_SCAN_RSSI_TO_MBM(rssi), - GFP_KERNEL); - cfg80211_put_bss(wiphy, bss); - } - } else - lbs_deb_scan("scan response: missing BSS channel IE\n"); - - tsfdesc += 8; - } - ret = 0; - - done: - lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); - return ret; -} - - -/* - * Our scan command contains a TLV, consting of a SSID TLV, a channel list - * TLV and a rates TLV. Determine the maximum size of them: - */ -#define LBS_SCAN_MAX_CMD_SIZE \ - (sizeof(struct cmd_ds_802_11_scan) \ - + LBS_MAX_SSID_TLV_SIZE \ - + LBS_MAX_CHANNEL_LIST_TLV_SIZE \ - + LBS_MAX_RATES_TLV_SIZE) - -/* - * Assumes priv->scan_req is initialized and valid - * Assumes priv->scan_channel is initialized - */ -static void lbs_scan_worker(struct work_struct *work) -{ - struct lbs_private *priv = - container_of(work, struct lbs_private, scan_work.work); - struct cmd_ds_802_11_scan *scan_cmd; - u8 *tlv; /* pointer into our current, growing TLV storage area */ - int last_channel; - int running, carrier; - - lbs_deb_enter(LBS_DEB_SCAN); - - scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL); - if (scan_cmd == NULL) - goto out_no_scan_cmd; - - /* prepare fixed part of scan command */ - scan_cmd->bsstype = CMD_BSS_TYPE_ANY; - - /* stop network while we're away from our main channel */ - running = !netif_queue_stopped(priv->dev); - carrier = netif_carrier_ok(priv->dev); - if (running) - netif_stop_queue(priv->dev); - if (carrier) - netif_carrier_off(priv->dev); - - /* prepare fixed part of scan command */ - tlv = scan_cmd->tlvbuffer; - - /* add SSID TLV */ - if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0) - tlv += lbs_add_ssid_tlv(tlv, - priv->scan_req->ssids[0].ssid, - priv->scan_req->ssids[0].ssid_len); - - /* add channel TLVs */ - last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP; - if (last_channel > priv->scan_req->n_channels) - last_channel = priv->scan_req->n_channels; - tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel, - priv->scan_req->n_ssids); - - /* add rates TLV */ - tlv += lbs_add_supported_rates_tlv(tlv); - - if (priv->scan_channel < priv->scan_req->n_channels) { - cancel_delayed_work(&priv->scan_work); - if (netif_running(priv->dev)) - queue_delayed_work(priv->work_thread, &priv->scan_work, - msecs_to_jiffies(300)); - } - - /* This is the final data we are about to send */ - scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd); - lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd, - sizeof(*scan_cmd)); - lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer, - tlv - scan_cmd->tlvbuffer); - - __lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr, - le16_to_cpu(scan_cmd->hdr.size), - lbs_ret_scan, 0); - - if (priv->scan_channel >= priv->scan_req->n_channels) { - /* Mark scan done */ - cancel_delayed_work(&priv->scan_work); - lbs_scan_done(priv); - } - - /* Restart network */ - if (carrier) - netif_carrier_on(priv->dev); - if (running && !priv->tx_pending_len) - netif_wake_queue(priv->dev); - - kfree(scan_cmd); - - /* Wake up anything waiting on scan completion */ - if (priv->scan_req == NULL) { - lbs_deb_scan("scan: waking up waiters\n"); - wake_up_all(&priv->scan_q); - } - - out_no_scan_cmd: - lbs_deb_leave(LBS_DEB_SCAN); -} - -static void _internal_start_scan(struct lbs_private *priv, bool internal, - struct cfg80211_scan_request *request) -{ - lbs_deb_enter(LBS_DEB_CFG80211); - - lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n", - request->n_ssids, request->n_channels, request->ie_len); - - priv->scan_channel = 0; - priv->scan_req = request; - priv->internal_scan = internal; - - queue_delayed_work(priv->work_thread, &priv->scan_work, - msecs_to_jiffies(50)); - - lbs_deb_leave(LBS_DEB_CFG80211); -} - -/* - * Clean up priv->scan_req. Should be used to handle the allocation details. - */ -void lbs_scan_done(struct lbs_private *priv) -{ - WARN_ON(!priv->scan_req); - - if (priv->internal_scan) - kfree(priv->scan_req); - else - cfg80211_scan_done(priv->scan_req, false); - - priv->scan_req = NULL; -} - -static int lbs_cfg_scan(struct wiphy *wiphy, - struct cfg80211_scan_request *request) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - int ret = 0; - - lbs_deb_enter(LBS_DEB_CFG80211); - - if (priv->scan_req || delayed_work_pending(&priv->scan_work)) { - /* old scan request not yet processed */ - ret = -EAGAIN; - goto out; - } - - _internal_start_scan(priv, false, request); - - if (priv->surpriseremoved) - ret = -EIO; - - out: - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - - - - -/* - * Events - */ - -void lbs_send_disconnect_notification(struct lbs_private *priv, - bool locally_generated) -{ - lbs_deb_enter(LBS_DEB_CFG80211); - - cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated, - GFP_KERNEL); - - lbs_deb_leave(LBS_DEB_CFG80211); -} - -void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event) -{ - lbs_deb_enter(LBS_DEB_CFG80211); - - cfg80211_michael_mic_failure(priv->dev, - priv->assoc_bss, - event == MACREG_INT_CODE_MIC_ERR_MULTICAST ? - NL80211_KEYTYPE_GROUP : - NL80211_KEYTYPE_PAIRWISE, - -1, - NULL, - GFP_KERNEL); - - lbs_deb_leave(LBS_DEB_CFG80211); -} - - - - -/* - * Connect/disconnect - */ - - -/* - * This removes all WEP keys - */ -static int lbs_remove_wep_keys(struct lbs_private *priv) -{ - struct cmd_ds_802_11_set_wep cmd; - int ret; - - lbs_deb_enter(LBS_DEB_CFG80211); - - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - cmd.keyindex = cpu_to_le16(priv->wep_tx_key); - cmd.action = cpu_to_le16(CMD_ACT_REMOVE); - - ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd); - - lbs_deb_leave(LBS_DEB_CFG80211); - return ret; -} - -/* - * Set WEP keys - */ -static int lbs_set_wep_keys(struct lbs_private *priv) -{ - struct cmd_ds_802_11_set_wep cmd; - int i; - int ret; - - lbs_deb_enter(LBS_DEB_CFG80211); - - /* - * command 13 00 - * size 50 00 - * sequence xx xx - * result 00 00 - * action 02 00 ACT_ADD - * transmit key 00 00 - * type for key 1 01 WEP40 - * type for key 2 00 - * type for key 3 00 - * type for key 4 00 - * key 1 39 39 39 39 39 00 00 00 - * 00 00 00 00 00 00 00 00 - * key 2 00 00 00 00 00 00 00 00 - * 00 00 00 00 00 00 00 00 - * key 3 00 00 00 00 00 00 00 00 - * 00 00 00 00 00 00 00 00 - * key 4 00 00 00 00 00 00 00 00 - */ - if (priv->wep_key_len[0] || priv->wep_key_len[1] || - priv->wep_key_len[2] || priv->wep_key_len[3]) { - /* Only set wep keys if we have at least one of them */ - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - cmd.keyindex = cpu_to_le16(priv->wep_tx_key); - cmd.action = cpu_to_le16(CMD_ACT_ADD); - - for (i = 0; i < 4; i++) { - switch (priv->wep_key_len[i]) { - case WLAN_KEY_LEN_WEP40: - cmd.keytype[i] = CMD_TYPE_WEP_40_BIT; - break; - case WLAN_KEY_LEN_WEP104: - cmd.keytype[i] = CMD_TYPE_WEP_104_BIT; - break; - default: - cmd.keytype[i] = 0; - break; - } - memcpy(cmd.keymaterial[i], priv->wep_key[i], - priv->wep_key_len[i]); - } - - ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd); - } else { - /* Otherwise remove all wep keys */ - ret = lbs_remove_wep_keys(priv); - } - - lbs_deb_leave(LBS_DEB_CFG80211); - return ret; -} - - -/* - * Enable/Disable RSN status - */ -static int lbs_enable_rsn(struct lbs_private *priv, int enable) -{ - struct cmd_ds_802_11_enable_rsn cmd; - int ret; - - lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable); - - /* - * cmd 2f 00 - * size 0c 00 - * sequence xx xx - * result 00 00 - * action 01 00 ACT_SET - * enable 01 00 - */ - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - cmd.action = cpu_to_le16(CMD_ACT_SET); - cmd.enable = cpu_to_le16(enable); - - ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd); - - lbs_deb_leave(LBS_DEB_CFG80211); - return ret; -} - - -/* - * Set WPA/WPA key material - */ - -/* - * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we - * get rid of WEXT, this should go into host.h - */ - -struct cmd_key_material { - struct cmd_header hdr; - - __le16 action; - struct MrvlIEtype_keyParamSet param; -} __packed; - -static int lbs_set_key_material(struct lbs_private *priv, - int key_type, int key_info, - const u8 *key, u16 key_len) -{ - struct cmd_key_material cmd; - int ret; - - lbs_deb_enter(LBS_DEB_CFG80211); - - /* - * Example for WPA (TKIP): - * - * cmd 5e 00 - * size 34 00 - * sequence xx xx - * result 00 00 - * action 01 00 - * TLV type 00 01 key param - * length 00 26 - * key type 01 00 TKIP - * key info 06 00 UNICAST | ENABLED - * key len 20 00 - * key 32 bytes - */ - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - cmd.action = cpu_to_le16(CMD_ACT_SET); - cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL); - cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4); - cmd.param.keytypeid = cpu_to_le16(key_type); - cmd.param.keyinfo = cpu_to_le16(key_info); - cmd.param.keylen = cpu_to_le16(key_len); - if (key && key_len) - memcpy(cmd.param.key, key, key_len); - - ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd); - - lbs_deb_leave(LBS_DEB_CFG80211); - return ret; -} - - -/* - * Sets the auth type (open, shared, etc) in the firmware. That - * we use CMD_802_11_AUTHENTICATE is misleading, this firmware - * command doesn't send an authentication frame at all, it just - * stores the auth_type. - */ -static int lbs_set_authtype(struct lbs_private *priv, - struct cfg80211_connect_params *sme) -{ - struct cmd_ds_802_11_authenticate cmd; - int ret; - - lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type); - - /* - * cmd 11 00 - * size 19 00 - * sequence xx xx - * result 00 00 - * BSS id 00 13 19 80 da 30 - * auth type 00 - * reserved 00 00 00 00 00 00 00 00 00 00 - */ - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - if (sme->bssid) - memcpy(cmd.bssid, sme->bssid, ETH_ALEN); - /* convert auth_type */ - ret = lbs_auth_to_authtype(sme->auth_type); - if (ret < 0) - goto done; - - cmd.authtype = ret; - ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd); - - done: - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - - -/* - * Create association request - */ -#define LBS_ASSOC_MAX_CMD_SIZE \ - (sizeof(struct cmd_ds_802_11_associate) \ - - 512 /* cmd_ds_802_11_associate.iebuf */ \ - + LBS_MAX_SSID_TLV_SIZE \ - + LBS_MAX_CHANNEL_TLV_SIZE \ - + LBS_MAX_CF_PARAM_TLV_SIZE \ - + LBS_MAX_AUTH_TYPE_TLV_SIZE \ - + LBS_MAX_WPA_TLV_SIZE) - -static int lbs_associate(struct lbs_private *priv, - struct cfg80211_bss *bss, - struct cfg80211_connect_params *sme) -{ - struct cmd_ds_802_11_associate_response *resp; - struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE, - GFP_KERNEL); - const u8 *ssid_eid; - size_t len, resp_ie_len; - int status; - int ret; - u8 *pos = &(cmd->iebuf[0]); - u8 *tmp; - - lbs_deb_enter(LBS_DEB_CFG80211); - - if (!cmd) { - ret = -ENOMEM; - goto done; - } - - /* - * cmd 50 00 - * length 34 00 - * sequence xx xx - * result 00 00 - * BSS id 00 13 19 80 da 30 - * capabilities 11 00 - * listen interval 0a 00 - * beacon interval 00 00 - * DTIM period 00 - * TLVs xx (up to 512 bytes) - */ - cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE); - - /* Fill in static fields */ - memcpy(cmd->bssid, bss->bssid, ETH_ALEN); - cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL); - cmd->capability = cpu_to_le16(bss->capability); - - /* add SSID TLV */ - rcu_read_lock(); - ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID); - if (ssid_eid) - pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]); - else - lbs_deb_assoc("no SSID\n"); - rcu_read_unlock(); - - /* add DS param TLV */ - if (bss->channel) - pos += lbs_add_channel_tlv(pos, bss->channel->hw_value); - else - lbs_deb_assoc("no channel\n"); - - /* add (empty) CF param TLV */ - pos += lbs_add_cf_param_tlv(pos); - - /* add rates TLV */ - tmp = pos + 4; /* skip Marvell IE header */ - pos += lbs_add_common_rates_tlv(pos, bss); - lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp); - - /* add auth type TLV */ - if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9) - pos += lbs_add_auth_type_tlv(pos, sme->auth_type); - - /* add WPA/WPA2 TLV */ - if (sme->ie && sme->ie_len) - pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len); - - len = (sizeof(*cmd) - sizeof(cmd->iebuf)) + - (u16)(pos - (u8 *) &cmd->iebuf); - cmd->hdr.size = cpu_to_le16(len); - - lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd, - le16_to_cpu(cmd->hdr.size)); - - /* store for later use */ - memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN); - - ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd); - if (ret) - goto done; - - /* generate connect message to cfg80211 */ - - resp = (void *) cmd; /* recast for easier field access */ - status = le16_to_cpu(resp->statuscode); - - /* Older FW versions map the IEEE 802.11 Status Code in the association - * response to the following values returned in resp->statuscode: - * - * IEEE Status Code Marvell Status Code - * 0 -> 0x0000 ASSOC_RESULT_SUCCESS - * 13 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED - * 14 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED - * 15 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED - * 16 -> 0x0004 ASSOC_RESULT_AUTH_REFUSED - * others -> 0x0003 ASSOC_RESULT_REFUSED - * - * Other response codes: - * 0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused) - * 0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for - * association response from the AP) - */ - if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) { - switch (status) { - case 0: - break; - case 1: - lbs_deb_assoc("invalid association parameters\n"); - status = WLAN_STATUS_CAPS_UNSUPPORTED; - break; - case 2: - lbs_deb_assoc("timer expired while waiting for AP\n"); - status = WLAN_STATUS_AUTH_TIMEOUT; - break; - case 3: - lbs_deb_assoc("association refused by AP\n"); - status = WLAN_STATUS_ASSOC_DENIED_UNSPEC; - break; - case 4: - lbs_deb_assoc("authentication refused by AP\n"); - status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION; - break; - default: - lbs_deb_assoc("association failure %d\n", status); - /* v5 OLPC firmware does return the AP status code if - * it's not one of the values above. Let that through. - */ - break; - } - } - - lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, " - "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode), - le16_to_cpu(resp->capability), le16_to_cpu(resp->aid)); - - resp_ie_len = le16_to_cpu(resp->hdr.size) - - sizeof(resp->hdr) - - 6; - cfg80211_connect_result(priv->dev, - priv->assoc_bss, - sme->ie, sme->ie_len, - resp->iebuf, resp_ie_len, - status, - GFP_KERNEL); - - if (status == 0) { - /* TODO: get rid of priv->connect_status */ - priv->connect_status = LBS_CONNECTED; - netif_carrier_on(priv->dev); - if (!priv->tx_pending_len) - netif_tx_wake_all_queues(priv->dev); - } - - kfree(cmd); -done: - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - -static struct cfg80211_scan_request * -_new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme) -{ - struct cfg80211_scan_request *creq = NULL; - int i, n_channels = ieee80211_get_num_supported_channels(wiphy); - enum ieee80211_band band; - - creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) + - n_channels * sizeof(void *), - GFP_ATOMIC); - if (!creq) - return NULL; - - /* SSIDs come after channels */ - creq->ssids = (void *)&creq->channels[n_channels]; - creq->n_channels = n_channels; - creq->n_ssids = 1; - - /* Scan all available channels */ - i = 0; - for (band = 0; band < IEEE80211_NUM_BANDS; band++) { - int j; - - if (!wiphy->bands[band]) - continue; - - for (j = 0; j < wiphy->bands[band]->n_channels; j++) { - /* ignore disabled channels */ - if (wiphy->bands[band]->channels[j].flags & - IEEE80211_CHAN_DISABLED) - continue; - - creq->channels[i] = &wiphy->bands[band]->channels[j]; - i++; - } - } - if (i) { - /* Set real number of channels specified in creq->channels[] */ - creq->n_channels = i; - - /* Scan for the SSID we're going to connect to */ - memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len); - creq->ssids[0].ssid_len = sme->ssid_len; - } else { - /* No channels found... */ - kfree(creq); - creq = NULL; - } - - return creq; -} - -static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev, - struct cfg80211_connect_params *sme) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - struct cfg80211_bss *bss = NULL; - int ret = 0; - u8 preamble = RADIO_PREAMBLE_SHORT; - - if (dev == priv->mesh_dev) - return -EOPNOTSUPP; - - lbs_deb_enter(LBS_DEB_CFG80211); - - if (!sme->bssid) { - struct cfg80211_scan_request *creq; - - /* - * Scan for the requested network after waiting for existing - * scans to finish. - */ - lbs_deb_assoc("assoc: waiting for existing scans\n"); - wait_event_interruptible_timeout(priv->scan_q, - (priv->scan_req == NULL), - (15 * HZ)); - - creq = _new_connect_scan_req(wiphy, sme); - if (!creq) { - ret = -EINVAL; - goto done; - } - - lbs_deb_assoc("assoc: scanning for compatible AP\n"); - _internal_start_scan(priv, true, creq); - - lbs_deb_assoc("assoc: waiting for scan to complete\n"); - wait_event_interruptible_timeout(priv->scan_q, - (priv->scan_req == NULL), - (15 * HZ)); - lbs_deb_assoc("assoc: scanning completed\n"); - } - - /* Find the BSS we want using available scan results */ - bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid, - sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS, - IEEE80211_PRIVACY_ANY); - if (!bss) { - wiphy_err(wiphy, "assoc: bss %pM not in scan results\n", - sme->bssid); - ret = -ENOENT; - goto done; - } - lbs_deb_assoc("trying %pM\n", bss->bssid); - lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n", - sme->crypto.cipher_group, - sme->key_idx, sme->key_len); - - /* As this is a new connection, clear locally stored WEP keys */ - priv->wep_tx_key = 0; - memset(priv->wep_key, 0, sizeof(priv->wep_key)); - memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len)); - - /* set/remove WEP keys */ - switch (sme->crypto.cipher_group) { - case WLAN_CIPHER_SUITE_WEP40: - case WLAN_CIPHER_SUITE_WEP104: - /* Store provided WEP keys in priv-> */ - priv->wep_tx_key = sme->key_idx; - priv->wep_key_len[sme->key_idx] = sme->key_len; - memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len); - /* Set WEP keys and WEP mode */ - lbs_set_wep_keys(priv); - priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE; - lbs_set_mac_control(priv); - /* No RSN mode for WEP */ - lbs_enable_rsn(priv, 0); - break; - case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */ - /* - * If we don't have no WEP, no WPA and no WPA2, - * we remove all keys like in the WPA/WPA2 setup, - * we just don't set RSN. - * - * Therefore: fall-through - */ - case WLAN_CIPHER_SUITE_TKIP: - case WLAN_CIPHER_SUITE_CCMP: - /* Remove WEP keys and WEP mode */ - lbs_remove_wep_keys(priv); - priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE; - lbs_set_mac_control(priv); - - /* clear the WPA/WPA2 keys */ - lbs_set_key_material(priv, - KEY_TYPE_ID_WEP, /* doesn't matter */ - KEY_INFO_WPA_UNICAST, - NULL, 0); - lbs_set_key_material(priv, - KEY_TYPE_ID_WEP, /* doesn't matter */ - KEY_INFO_WPA_MCAST, - NULL, 0); - /* RSN mode for WPA/WPA2 */ - lbs_enable_rsn(priv, sme->crypto.cipher_group != 0); - break; - default: - wiphy_err(wiphy, "unsupported cipher group 0x%x\n", - sme->crypto.cipher_group); - ret = -ENOTSUPP; - goto done; - } - - ret = lbs_set_authtype(priv, sme); - if (ret == -ENOTSUPP) { - wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type); - goto done; - } - - lbs_set_radio(priv, preamble, 1); - - /* Do the actual association */ - ret = lbs_associate(priv, bss, sme); - - done: - if (bss) - cfg80211_put_bss(wiphy, bss); - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - -int lbs_disconnect(struct lbs_private *priv, u16 reason) -{ - struct cmd_ds_802_11_deauthenticate cmd; - int ret; - - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - /* Mildly ugly to use a locally store my own BSSID ... */ - memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN); - cmd.reasoncode = cpu_to_le16(reason); - - ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd); - if (ret) - return ret; - - cfg80211_disconnected(priv->dev, - reason, - NULL, 0, true, - GFP_KERNEL); - priv->connect_status = LBS_DISCONNECTED; - - return 0; -} - -static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev, - u16 reason_code) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - - if (dev == priv->mesh_dev) - return -EOPNOTSUPP; - - lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code); - - /* store for lbs_cfg_ret_disconnect() */ - priv->disassoc_reason = reason_code; - - return lbs_disconnect(priv, reason_code); -} - -static int lbs_cfg_set_default_key(struct wiphy *wiphy, - struct net_device *netdev, - u8 key_index, bool unicast, - bool multicast) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - - if (netdev == priv->mesh_dev) - return -EOPNOTSUPP; - - lbs_deb_enter(LBS_DEB_CFG80211); - - if (key_index != priv->wep_tx_key) { - lbs_deb_assoc("set_default_key: to %d\n", key_index); - priv->wep_tx_key = key_index; - lbs_set_wep_keys(priv); - } - - return 0; -} - - -static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev, - u8 idx, bool pairwise, const u8 *mac_addr, - struct key_params *params) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - u16 key_info; - u16 key_type; - int ret = 0; - - if (netdev == priv->mesh_dev) - return -EOPNOTSUPP; - - lbs_deb_enter(LBS_DEB_CFG80211); - - lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n", - params->cipher, mac_addr); - lbs_deb_assoc("add_key: key index %d, key len %d\n", - idx, params->key_len); - if (params->key_len) - lbs_deb_hex(LBS_DEB_CFG80211, "KEY", - params->key, params->key_len); - - lbs_deb_assoc("add_key: seq len %d\n", params->seq_len); - if (params->seq_len) - lbs_deb_hex(LBS_DEB_CFG80211, "SEQ", - params->seq, params->seq_len); - - switch (params->cipher) { - case WLAN_CIPHER_SUITE_WEP40: - case WLAN_CIPHER_SUITE_WEP104: - /* actually compare if something has changed ... */ - if ((priv->wep_key_len[idx] != params->key_len) || - memcmp(priv->wep_key[idx], - params->key, params->key_len) != 0) { - priv->wep_key_len[idx] = params->key_len; - memcpy(priv->wep_key[idx], - params->key, params->key_len); - lbs_set_wep_keys(priv); - } - break; - case WLAN_CIPHER_SUITE_TKIP: - case WLAN_CIPHER_SUITE_CCMP: - key_info = KEY_INFO_WPA_ENABLED | ((idx == 0) - ? KEY_INFO_WPA_UNICAST - : KEY_INFO_WPA_MCAST); - key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP) - ? KEY_TYPE_ID_TKIP - : KEY_TYPE_ID_AES; - lbs_set_key_material(priv, - key_type, - key_info, - params->key, params->key_len); - break; - default: - wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher); - ret = -ENOTSUPP; - break; - } - - return ret; -} - - -static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev, - u8 key_index, bool pairwise, const u8 *mac_addr) -{ - - lbs_deb_enter(LBS_DEB_CFG80211); - - lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n", - key_index, mac_addr); - -#ifdef TODO - struct lbs_private *priv = wiphy_priv(wiphy); - /* - * I think can keep this a NO-OP, because: - - * - we clear all keys whenever we do lbs_cfg_connect() anyway - * - neither "iw" nor "wpa_supplicant" won't call this during - * an ongoing connection - * - TODO: but I have to check if this is still true when - * I set the AP to periodic re-keying - * - we've not kzallec() something when we've added a key at - * lbs_cfg_connect() or lbs_cfg_add_key(). - * - * This causes lbs_cfg_del_key() only called at disconnect time, - * where we'd just waste time deleting a key that is not going - * to be used anyway. - */ - if (key_index < 3 && priv->wep_key_len[key_index]) { - priv->wep_key_len[key_index] = 0; - lbs_set_wep_keys(priv); - } -#endif - - return 0; -} - - -/* - * Get station - */ - -static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev, - const u8 *mac, struct station_info *sinfo) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - s8 signal, noise; - int ret; - size_t i; - - lbs_deb_enter(LBS_DEB_CFG80211); - - sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES) | - BIT(NL80211_STA_INFO_TX_PACKETS) | - BIT(NL80211_STA_INFO_RX_BYTES) | - BIT(NL80211_STA_INFO_RX_PACKETS); - sinfo->tx_bytes = priv->dev->stats.tx_bytes; - sinfo->tx_packets = priv->dev->stats.tx_packets; - sinfo->rx_bytes = priv->dev->stats.rx_bytes; - sinfo->rx_packets = priv->dev->stats.rx_packets; - - /* Get current RSSI */ - ret = lbs_get_rssi(priv, &signal, &noise); - if (ret == 0) { - sinfo->signal = signal; - sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL); - } - - /* Convert priv->cur_rate from hw_value to NL80211 value */ - for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) { - if (priv->cur_rate == lbs_rates[i].hw_value) { - sinfo->txrate.legacy = lbs_rates[i].bitrate; - sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE); - break; - } - } - - return 0; -} - - - - -/* - * Change interface - */ - -static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev, - enum nl80211_iftype type, u32 *flags, - struct vif_params *params) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - int ret = 0; - - if (dev == priv->mesh_dev) - return -EOPNOTSUPP; - - switch (type) { - case NL80211_IFTYPE_MONITOR: - case NL80211_IFTYPE_STATION: - case NL80211_IFTYPE_ADHOC: - break; - default: - return -EOPNOTSUPP; - } - - lbs_deb_enter(LBS_DEB_CFG80211); - - if (priv->iface_running) - ret = lbs_set_iface_type(priv, type); - - if (!ret) - priv->wdev->iftype = type; - - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - - - -/* - * IBSS (Ad-Hoc) - */ - -/* - * The firmware needs the following bits masked out of the beacon-derived - * capability field when associating/joining to a BSS: - * 9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused) - */ -#define CAPINFO_MASK (~(0xda00)) - - -static void lbs_join_post(struct lbs_private *priv, - struct cfg80211_ibss_params *params, - u8 *bssid, u16 capability) -{ - u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */ - 2 + 4 + /* basic rates */ - 2 + 1 + /* DS parameter */ - 2 + 2 + /* atim */ - 2 + 8]; /* extended rates */ - u8 *fake = fake_ie; - struct cfg80211_bss *bss; - - lbs_deb_enter(LBS_DEB_CFG80211); - - /* - * For cfg80211_inform_bss, we'll need a fake IE, as we can't get - * the real IE from the firmware. So we fabricate a fake IE based on - * what the firmware actually sends (sniffed with wireshark). - */ - /* Fake SSID IE */ - *fake++ = WLAN_EID_SSID; - *fake++ = params->ssid_len; - memcpy(fake, params->ssid, params->ssid_len); - fake += params->ssid_len; - /* Fake supported basic rates IE */ - *fake++ = WLAN_EID_SUPP_RATES; - *fake++ = 4; - *fake++ = 0x82; - *fake++ = 0x84; - *fake++ = 0x8b; - *fake++ = 0x96; - /* Fake DS channel IE */ - *fake++ = WLAN_EID_DS_PARAMS; - *fake++ = 1; - *fake++ = params->chandef.chan->hw_value; - /* Fake IBSS params IE */ - *fake++ = WLAN_EID_IBSS_PARAMS; - *fake++ = 2; - *fake++ = 0; /* ATIM=0 */ - *fake++ = 0; - /* Fake extended rates IE, TODO: don't add this for 802.11b only, - * but I don't know how this could be checked */ - *fake++ = WLAN_EID_EXT_SUPP_RATES; - *fake++ = 8; - *fake++ = 0x0c; - *fake++ = 0x12; - *fake++ = 0x18; - *fake++ = 0x24; - *fake++ = 0x30; - *fake++ = 0x48; - *fake++ = 0x60; - *fake++ = 0x6c; - lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie); - - bss = cfg80211_inform_bss(priv->wdev->wiphy, - params->chandef.chan, - CFG80211_BSS_FTYPE_UNKNOWN, - bssid, - 0, - capability, - params->beacon_interval, - fake_ie, fake - fake_ie, - 0, GFP_KERNEL); - cfg80211_put_bss(priv->wdev->wiphy, bss); - - memcpy(priv->wdev->ssid, params->ssid, params->ssid_len); - priv->wdev->ssid_len = params->ssid_len; - - cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan, - GFP_KERNEL); - - /* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */ - priv->connect_status = LBS_CONNECTED; - netif_carrier_on(priv->dev); - if (!priv->tx_pending_len) - netif_wake_queue(priv->dev); - - lbs_deb_leave(LBS_DEB_CFG80211); -} - -static int lbs_ibss_join_existing(struct lbs_private *priv, - struct cfg80211_ibss_params *params, - struct cfg80211_bss *bss) -{ - const u8 *rates_eid; - struct cmd_ds_802_11_ad_hoc_join cmd; - u8 preamble = RADIO_PREAMBLE_SHORT; - int ret = 0; - - lbs_deb_enter(LBS_DEB_CFG80211); - - /* TODO: set preamble based on scan result */ - ret = lbs_set_radio(priv, preamble, 1); - if (ret) - goto out; - - /* - * Example CMD_802_11_AD_HOC_JOIN command: - * - * command 2c 00 CMD_802_11_AD_HOC_JOIN - * size 65 00 - * sequence xx xx - * result 00 00 - * bssid 02 27 27 97 2f 96 - * ssid 49 42 53 53 00 00 00 00 - * 00 00 00 00 00 00 00 00 - * 00 00 00 00 00 00 00 00 - * 00 00 00 00 00 00 00 00 - * type 02 CMD_BSS_TYPE_IBSS - * beacon period 64 00 - * dtim period 00 - * timestamp 00 00 00 00 00 00 00 00 - * localtime 00 00 00 00 00 00 00 00 - * IE DS 03 - * IE DS len 01 - * IE DS channel 01 - * reserveed 00 00 00 00 - * IE IBSS 06 - * IE IBSS len 02 - * IE IBSS atim 00 00 - * reserved 00 00 00 00 - * capability 02 00 - * rates 82 84 8b 96 0c 12 18 24 30 48 60 6c 00 - * fail timeout ff 00 - * probe delay 00 00 - */ - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - - memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN); - memcpy(cmd.bss.ssid, params->ssid, params->ssid_len); - cmd.bss.type = CMD_BSS_TYPE_IBSS; - cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval); - cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS; - cmd.bss.ds.header.len = 1; - cmd.bss.ds.channel = params->chandef.chan->hw_value; - cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS; - cmd.bss.ibss.header.len = 2; - cmd.bss.ibss.atimwindow = 0; - cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK); - - /* set rates to the intersection of our rates and the rates in the - bss */ - rcu_read_lock(); - rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES); - if (!rates_eid) { - lbs_add_rates(cmd.bss.rates); - } else { - int hw, i; - u8 rates_max = rates_eid[1]; - u8 *rates = cmd.bss.rates; - for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) { - u8 hw_rate = lbs_rates[hw].bitrate / 5; - for (i = 0; i < rates_max; i++) { - if (hw_rate == (rates_eid[i+2] & 0x7f)) { - u8 rate = rates_eid[i+2]; - if (rate == 0x02 || rate == 0x04 || - rate == 0x0b || rate == 0x16) - rate |= 0x80; - *rates++ = rate; - } - } - } - } - rcu_read_unlock(); - - /* Only v8 and below support setting this */ - if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) { - cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT); - cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME); - } - ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd); - if (ret) - goto out; - - /* - * This is a sample response to CMD_802_11_AD_HOC_JOIN: - * - * response 2c 80 - * size 09 00 - * sequence xx xx - * result 00 00 - * reserved 00 - */ - lbs_join_post(priv, params, bss->bssid, bss->capability); - - out: - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - - - -static int lbs_ibss_start_new(struct lbs_private *priv, - struct cfg80211_ibss_params *params) -{ - struct cmd_ds_802_11_ad_hoc_start cmd; - struct cmd_ds_802_11_ad_hoc_result *resp = - (struct cmd_ds_802_11_ad_hoc_result *) &cmd; - u8 preamble = RADIO_PREAMBLE_SHORT; - int ret = 0; - u16 capability; - - lbs_deb_enter(LBS_DEB_CFG80211); - - ret = lbs_set_radio(priv, preamble, 1); - if (ret) - goto out; - - /* - * Example CMD_802_11_AD_HOC_START command: - * - * command 2b 00 CMD_802_11_AD_HOC_START - * size b1 00 - * sequence xx xx - * result 00 00 - * ssid 54 45 53 54 00 00 00 00 - * 00 00 00 00 00 00 00 00 - * 00 00 00 00 00 00 00 00 - * 00 00 00 00 00 00 00 00 - * bss type 02 - * beacon period 64 00 - * dtim period 00 - * IE IBSS 06 - * IE IBSS len 02 - * IE IBSS atim 00 00 - * reserved 00 00 00 00 - * IE DS 03 - * IE DS len 01 - * IE DS channel 01 - * reserved 00 00 00 00 - * probe delay 00 00 - * capability 02 00 - * rates 82 84 8b 96 (basic rates with have bit 7 set) - * 0c 12 18 24 30 48 60 6c - * padding 100 bytes - */ - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - memcpy(cmd.ssid, params->ssid, params->ssid_len); - cmd.bsstype = CMD_BSS_TYPE_IBSS; - cmd.beaconperiod = cpu_to_le16(params->beacon_interval); - cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS; - cmd.ibss.header.len = 2; - cmd.ibss.atimwindow = 0; - cmd.ds.header.id = WLAN_EID_DS_PARAMS; - cmd.ds.header.len = 1; - cmd.ds.channel = params->chandef.chan->hw_value; - /* Only v8 and below support setting probe delay */ - if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) - cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME); - /* TODO: mix in WLAN_CAPABILITY_PRIVACY */ - capability = WLAN_CAPABILITY_IBSS; - cmd.capability = cpu_to_le16(capability); - lbs_add_rates(cmd.rates); - - - ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd); - if (ret) - goto out; - - /* - * This is a sample response to CMD_802_11_AD_HOC_JOIN: - * - * response 2b 80 - * size 14 00 - * sequence xx xx - * result 00 00 - * reserved 00 - * bssid 02 2b 7b 0f 86 0e - */ - lbs_join_post(priv, params, resp->bssid, capability); - - out: - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - - -static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev, - struct cfg80211_ibss_params *params) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - int ret = 0; - struct cfg80211_bss *bss; - - if (dev == priv->mesh_dev) - return -EOPNOTSUPP; - - lbs_deb_enter(LBS_DEB_CFG80211); - - if (!params->chandef.chan) { - ret = -ENOTSUPP; - goto out; - } - - ret = lbs_set_channel(priv, params->chandef.chan->hw_value); - if (ret) - goto out; - - /* Search if someone is beaconing. This assumes that the - * bss list is populated already */ - bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid, - params->ssid, params->ssid_len, - IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY); - - if (bss) { - ret = lbs_ibss_join_existing(priv, params, bss); - cfg80211_put_bss(wiphy, bss); - } else - ret = lbs_ibss_start_new(priv, params); - - - out: - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - - -static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - struct cmd_ds_802_11_ad_hoc_stop cmd; - int ret = 0; - - if (dev == priv->mesh_dev) - return -EOPNOTSUPP; - - lbs_deb_enter(LBS_DEB_CFG80211); - - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.size = cpu_to_le16(sizeof(cmd)); - ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd); - - /* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */ - lbs_mac_event_disconnected(priv, true); - - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - - - - -/* - * Initialization - */ - -static struct cfg80211_ops lbs_cfg80211_ops = { - .set_monitor_channel = lbs_cfg_set_monitor_channel, - .libertas_set_mesh_channel = lbs_cfg_set_mesh_channel, - .scan = lbs_cfg_scan, - .connect = lbs_cfg_connect, - .disconnect = lbs_cfg_disconnect, - .add_key = lbs_cfg_add_key, - .del_key = lbs_cfg_del_key, - .set_default_key = lbs_cfg_set_default_key, - .get_station = lbs_cfg_get_station, - .change_virtual_intf = lbs_change_intf, - .join_ibss = lbs_join_ibss, - .leave_ibss = lbs_leave_ibss, -}; - - -/* - * At this time lbs_private *priv doesn't even exist, so we just allocate - * memory and don't initialize the wiphy further. This is postponed until we - * can talk to the firmware and happens at registration time in - * lbs_cfg_wiphy_register(). - */ -struct wireless_dev *lbs_cfg_alloc(struct device *dev) -{ - int ret = 0; - struct wireless_dev *wdev; - - lbs_deb_enter(LBS_DEB_CFG80211); - - wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); - if (!wdev) - return ERR_PTR(-ENOMEM); - - wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private)); - if (!wdev->wiphy) { - dev_err(dev, "cannot allocate wiphy\n"); - ret = -ENOMEM; - goto err_wiphy_new; - } - - lbs_deb_leave(LBS_DEB_CFG80211); - return wdev; - - err_wiphy_new: - kfree(wdev); - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ERR_PTR(ret); -} - - -static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv) -{ - struct region_code_mapping { - const char *cn; - int code; - }; - - /* Section 5.17.2 */ - static const struct region_code_mapping regmap[] = { - {"US ", 0x10}, /* US FCC */ - {"CA ", 0x20}, /* Canada */ - {"EU ", 0x30}, /* ETSI */ - {"ES ", 0x31}, /* Spain */ - {"FR ", 0x32}, /* France */ - {"JP ", 0x40}, /* Japan */ - }; - size_t i; - - lbs_deb_enter(LBS_DEB_CFG80211); - - for (i = 0; i < ARRAY_SIZE(regmap); i++) - if (regmap[i].code == priv->regioncode) { - regulatory_hint(priv->wdev->wiphy, regmap[i].cn); - break; - } - - lbs_deb_leave(LBS_DEB_CFG80211); -} - -static void lbs_reg_notifier(struct wiphy *wiphy, - struct regulatory_request *request) -{ - struct lbs_private *priv = wiphy_priv(wiphy); - - lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain " - "callback for domain %c%c\n", request->alpha2[0], - request->alpha2[1]); - - memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2)); - if (lbs_iface_active(priv)) - lbs_set_11d_domain_info(priv); - - lbs_deb_leave(LBS_DEB_CFG80211); -} - -/* - * This function get's called after lbs_setup_firmware() determined the - * firmware capabities. So we can setup the wiphy according to our - * hardware/firmware. - */ -int lbs_cfg_register(struct lbs_private *priv) -{ - struct wireless_dev *wdev = priv->wdev; - int ret; - - lbs_deb_enter(LBS_DEB_CFG80211); - - wdev->wiphy->max_scan_ssids = 1; - wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; - - wdev->wiphy->interface_modes = - BIT(NL80211_IFTYPE_STATION) | - BIT(NL80211_IFTYPE_ADHOC); - if (lbs_rtap_supported(priv)) - wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR); - if (lbs_mesh_activated(priv)) - wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT); - - wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz; - - /* - * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have - * never seen a firmware without WPA - */ - wdev->wiphy->cipher_suites = cipher_suites; - wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); - wdev->wiphy->reg_notifier = lbs_reg_notifier; - - ret = wiphy_register(wdev->wiphy); - if (ret < 0) - pr_err("cannot register wiphy device\n"); - - priv->wiphy_registered = true; - - ret = register_netdev(priv->dev); - if (ret) - pr_err("cannot register network device\n"); - - INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker); - - lbs_cfg_set_regulatory_hint(priv); - - lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); - return ret; -} - -void lbs_scan_deinit(struct lbs_private *priv) -{ - lbs_deb_enter(LBS_DEB_CFG80211); - cancel_delayed_work_sync(&priv->scan_work); -} - - -void lbs_cfg_free(struct lbs_private *priv) -{ - struct wireless_dev *wdev = priv->wdev; - - lbs_deb_enter(LBS_DEB_CFG80211); - - if (!wdev) - return; - - if (priv->wiphy_registered) - wiphy_unregister(wdev->wiphy); - - if (wdev->wiphy) - wiphy_free(wdev->wiphy); - - kfree(wdev); -} |