1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <net/mac80211.h>
31 #include <linux/etherdevice.h>
32 #include <linux/sched.h>
38 /* priv->sta_lock must be held */
39 static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
42 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
43 IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
44 sta_id, priv->stations[sta_id].sta.sta.addr);
46 if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
48 "STA id %u addr %pM already present in uCode (according to driver)\n",
49 sta_id, priv->stations[sta_id].sta.sta.addr);
51 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
52 IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
53 sta_id, priv->stations[sta_id].sta.sta.addr);
57 static void iwl_process_add_sta_resp(struct iwl_priv *priv,
58 struct iwl_addsta_cmd *addsta,
59 struct iwl_rx_packet *pkt,
62 u8 sta_id = addsta->sta.sta_id;
65 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
66 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
71 IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
74 spin_lock_irqsave(&priv->sta_lock, flags);
76 switch (pkt->u.add_sta.status) {
77 case ADD_STA_SUCCESS_MSK:
78 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
79 iwl_sta_ucode_activate(priv, sta_id);
81 case ADD_STA_NO_ROOM_IN_TABLE:
82 IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
85 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
86 IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
89 case ADD_STA_MODIFY_NON_EXIST_STA:
90 IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
94 IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
95 pkt->u.add_sta.status);
99 IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
100 priv->stations[sta_id].sta.mode ==
101 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
102 sta_id, priv->stations[sta_id].sta.sta.addr);
105 * XXX: The MAC address in the command buffer is often changed from
106 * the original sent to the device. That is, the MAC address
107 * written to the command buffer often is not the same MAC adress
108 * read from the command buffer when the command returns. This
109 * issue has not yet been resolved and this debugging is left to
110 * observe the problem.
112 IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
113 priv->stations[sta_id].sta.mode ==
114 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
116 spin_unlock_irqrestore(&priv->sta_lock, flags);
119 static void iwl_add_sta_callback(struct iwl_priv *priv,
120 struct iwl_device_cmd *cmd,
121 struct iwl_rx_packet *pkt)
123 struct iwl_addsta_cmd *addsta =
124 (struct iwl_addsta_cmd *)cmd->cmd.payload;
126 iwl_process_add_sta_resp(priv, addsta, pkt, false);
130 int iwl_send_add_sta(struct iwl_priv *priv,
131 struct iwl_addsta_cmd *sta, u8 flags)
133 struct iwl_rx_packet *pkt = NULL;
135 u8 data[sizeof(*sta)];
136 struct iwl_host_cmd cmd = {
141 u8 sta_id __maybe_unused = sta->sta.sta_id;
143 IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
144 sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
146 if (flags & CMD_ASYNC)
147 cmd.callback = iwl_add_sta_callback;
149 cmd.flags |= CMD_WANT_SKB;
151 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
152 ret = iwl_send_cmd(priv, &cmd);
154 if (ret || (flags & CMD_ASYNC))
158 pkt = (struct iwl_rx_packet *)cmd.reply_page;
159 iwl_process_add_sta_resp(priv, sta, pkt, true);
161 iwl_free_pages(priv, cmd.reply_page);
165 EXPORT_SYMBOL(iwl_send_add_sta);
167 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
168 struct ieee80211_sta_ht_cap *sta_ht_inf)
173 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
176 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
177 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
178 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
180 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
181 "dynamic" : "disabled");
183 sta_flags = priv->stations[index].sta.station_flags;
185 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
187 switch (mimo_ps_mode) {
188 case WLAN_HT_CAP_SM_PS_STATIC:
189 sta_flags |= STA_FLG_MIMO_DIS_MSK;
191 case WLAN_HT_CAP_SM_PS_DYNAMIC:
192 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
194 case WLAN_HT_CAP_SM_PS_DISABLED:
197 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
201 sta_flags |= cpu_to_le32(
202 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
204 sta_flags |= cpu_to_le32(
205 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
207 if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
208 sta_flags |= STA_FLG_HT40_EN_MSK;
210 sta_flags &= ~STA_FLG_HT40_EN_MSK;
212 priv->stations[index].sta.station_flags = sta_flags;
218 * iwl_prep_station - Prepare station information for addition
220 * should be called with sta_lock held
222 static u8 iwl_prep_station(struct iwl_priv *priv, const u8 *addr,
224 struct ieee80211_sta_ht_cap *ht_info)
226 struct iwl_station_entry *station;
228 u8 sta_id = IWL_INVALID_STATION;
233 else if (is_broadcast_ether_addr(addr))
234 sta_id = priv->hw_params.bcast_sta_id;
236 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
237 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
243 if (!priv->stations[i].used &&
244 sta_id == IWL_INVALID_STATION)
249 * These two conditions have the same outcome, but keep them
252 if (unlikely(sta_id == IWL_INVALID_STATION))
256 * uCode is not able to deal with multiple requests to add a
257 * station. Keep track if one is in progress so that we do not send
260 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
261 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
266 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
267 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
268 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
269 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
274 station = &priv->stations[sta_id];
275 station->used = IWL_STA_DRIVER_ACTIVE;
276 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
278 priv->num_stations++;
280 /* Set up the REPLY_ADD_STA command to send to device */
281 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
282 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
283 station->sta.mode = 0;
284 station->sta.sta.sta_id = sta_id;
285 station->sta.station_flags = 0;
287 /* BCAST station and IBSS stations do not work in HT mode */
288 if (sta_id != priv->hw_params.bcast_sta_id &&
289 priv->iw_mode != NL80211_IFTYPE_ADHOC)
290 iwl_set_ht_add_station(priv, sta_id, ht_info);
293 rate = (priv->band == IEEE80211_BAND_5GHZ) ?
294 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
295 /* Turn on both antennas for the station... */
296 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
302 #define STA_WAIT_TIMEOUT (HZ/2)
305 * iwl_add_station_common -
307 int iwl_add_station_common(struct iwl_priv *priv, const u8 *addr,
309 struct ieee80211_sta_ht_cap *ht_info,
312 struct iwl_station_entry *station;
313 unsigned long flags_spin;
318 spin_lock_irqsave(&priv->sta_lock, flags_spin);
319 sta_id = iwl_prep_station(priv, addr, is_ap, ht_info);
320 if (sta_id == IWL_INVALID_STATION) {
321 IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
323 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
328 * uCode is not able to deal with multiple requests to add a
329 * station. Keep track if one is in progress so that we do not send
332 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
333 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
335 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
339 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
340 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
341 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
343 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
347 priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
348 station = &priv->stations[sta_id];
349 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
351 /* Add station to device's station table */
352 ret = iwl_send_add_sta(priv, &station->sta, CMD_SYNC);
354 IWL_ERR(priv, "Adding station %pM failed.\n", station->sta.sta.addr);
355 spin_lock_irqsave(&priv->sta_lock, flags_spin);
356 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
357 priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
358 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
363 EXPORT_SYMBOL(iwl_add_station_common);
365 static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv,
369 struct iwl_link_quality_cmd *link_cmd;
372 link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
374 IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
377 /* Set up the rate scaling to start at selected rate, fall back
378 * all the way down to 1M in IEEE order, and then spin on 1M */
379 if (priv->band == IEEE80211_BAND_5GHZ)
380 r = IWL_RATE_6M_INDEX;
382 r = IWL_RATE_1M_INDEX;
384 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
386 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
387 rate_flags |= RATE_MCS_CCK_MSK;
389 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
392 link_cmd->rs_table[i].rate_n_flags =
393 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
394 r = iwl_get_prev_ieee_rate(r);
397 link_cmd->general_params.single_stream_ant_msk =
398 first_antenna(priv->hw_params.valid_tx_ant);
400 link_cmd->general_params.dual_stream_ant_msk =
401 priv->hw_params.valid_tx_ant &
402 ~first_antenna(priv->hw_params.valid_tx_ant);
403 if (!link_cmd->general_params.dual_stream_ant_msk) {
404 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
405 } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) {
406 link_cmd->general_params.dual_stream_ant_msk =
407 priv->hw_params.valid_tx_ant;
410 link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
411 link_cmd->agg_params.agg_time_limit =
412 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
414 link_cmd->sta_id = sta_id;
420 * iwl_add_local_station - Add stations not requested by mac80211
422 * This will be either the broadcast station or the bssid station needed by
427 int iwl_add_local_station(struct iwl_priv *priv, const u8 *addr, bool init_rs,
432 struct iwl_link_quality_cmd *link_cmd;
436 *sta_id_r = IWL_INVALID_STATION;
438 ret = iwl_add_station_common(priv, addr, 0, NULL, &sta_id);
440 IWL_ERR(priv, "Unable to add station %pM\n", addr);
447 spin_lock_irqsave(&priv->sta_lock, flags);
448 priv->stations[sta_id].used |= IWL_STA_LOCAL;
449 spin_unlock_irqrestore(&priv->sta_lock, flags);
452 /* Set up default rate scaling table in device's station table */
453 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
455 IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n",
460 ret = iwl_send_lq_cmd(priv, link_cmd, CMD_SYNC, true);
462 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
464 spin_lock_irqsave(&priv->sta_lock, flags);
465 priv->stations[sta_id].lq = link_cmd;
466 spin_unlock_irqrestore(&priv->sta_lock, flags);
471 EXPORT_SYMBOL(iwl_add_local_station);
474 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
476 * priv->sta_lock must be held
478 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
480 /* Ucode must be active and driver must be non active */
481 if ((priv->stations[sta_id].used &
482 (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != IWL_STA_UCODE_ACTIVE)
483 IWL_ERR(priv, "removed non active STA %u\n", sta_id);
485 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
487 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
488 IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
491 static int iwl_send_remove_station(struct iwl_priv *priv,
492 struct iwl_station_entry *station)
494 struct iwl_rx_packet *pkt;
497 unsigned long flags_spin;
498 struct iwl_rem_sta_cmd rm_sta_cmd;
500 struct iwl_host_cmd cmd = {
501 .id = REPLY_REMOVE_STA,
502 .len = sizeof(struct iwl_rem_sta_cmd),
507 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
508 rm_sta_cmd.num_sta = 1;
509 memcpy(&rm_sta_cmd.addr, &station->sta.sta.addr , ETH_ALEN);
511 cmd.flags |= CMD_WANT_SKB;
513 ret = iwl_send_cmd(priv, &cmd);
518 pkt = (struct iwl_rx_packet *)cmd.reply_page;
519 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
520 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
526 switch (pkt->u.rem_sta.status) {
527 case REM_STA_SUCCESS_MSK:
528 spin_lock_irqsave(&priv->sta_lock, flags_spin);
529 iwl_sta_ucode_deactivate(priv, station->sta.sta.sta_id);
530 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
531 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
535 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
539 iwl_free_pages(priv, cmd.reply_page);
545 * iwl_remove_station - Remove driver's knowledge of station.
547 int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
550 struct iwl_station_entry *station;
553 if (!iwl_is_ready(priv)) {
555 "Unable to remove station %pM, device not ready.\n",
558 * It is typical for stations to be removed when we are
559 * going down. Return success since device will be down
565 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
568 if (WARN_ON(sta_id == IWL_INVALID_STATION))
571 spin_lock_irqsave(&priv->sta_lock, flags);
573 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
574 IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
579 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
580 IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
585 if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
586 kfree(priv->stations[sta_id].lq);
587 priv->stations[sta_id].lq = NULL;
590 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
592 priv->num_stations--;
594 BUG_ON(priv->num_stations < 0);
596 station = &priv->stations[sta_id];
597 spin_unlock_irqrestore(&priv->sta_lock, flags);
599 return iwl_send_remove_station(priv, station);
601 spin_unlock_irqrestore(&priv->sta_lock, flags);
604 EXPORT_SYMBOL_GPL(iwl_remove_station);
607 * iwl_clear_ucode_stations - clear ucode station table bits
609 * This function clears all the bits in the driver indicating
610 * which stations are active in the ucode. Call when something
611 * other than explicit station management would cause this in
612 * the ucode, e.g. unassociated RXON.
614 void iwl_clear_ucode_stations(struct iwl_priv *priv)
617 unsigned long flags_spin;
618 bool cleared = false;
620 IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
622 spin_lock_irqsave(&priv->sta_lock, flags_spin);
623 for (i = 0; i < priv->hw_params.max_stations; i++) {
624 if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
625 IWL_DEBUG_INFO(priv, "Clearing ucode active for station %d\n", i);
626 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
630 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
633 IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n");
635 EXPORT_SYMBOL(iwl_clear_ucode_stations);
638 * iwl_restore_stations() - Restore driver known stations to device
640 * All stations considered active by driver, but not present in ucode, is
645 void iwl_restore_stations(struct iwl_priv *priv)
647 struct iwl_station_entry *station;
648 unsigned long flags_spin;
653 if (!iwl_is_ready(priv)) {
654 IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n");
658 IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
659 spin_lock_irqsave(&priv->sta_lock, flags_spin);
660 for (i = 0; i < priv->hw_params.max_stations; i++) {
661 if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
662 !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
663 IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
664 priv->stations[i].sta.sta.addr);
665 priv->stations[i].sta.mode = 0;
666 priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
671 for (i = 0; i < priv->hw_params.max_stations; i++) {
672 if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
673 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
674 station = &priv->stations[i];
675 ret = iwl_send_add_sta(priv, &priv->stations[i].sta, CMD_SYNC);
677 IWL_ERR(priv, "Adding station %pM failed.\n",
678 station->sta.sta.addr);
679 spin_lock_irqsave(&priv->sta_lock, flags_spin);
680 priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE;
681 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
682 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
685 * Rate scaling has already been initialized, send
689 iwl_send_lq_cmd(priv, station->lq, CMD_SYNC, true);
690 spin_lock_irqsave(&priv->sta_lock, flags_spin);
691 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
695 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
697 IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n");
699 IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n");
701 EXPORT_SYMBOL(iwl_restore_stations);
703 int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
707 for (i = 0; i < STA_KEY_MAX_NUM; i++)
708 if (!test_and_set_bit(i, &priv->ucode_key_table))
711 return WEP_INVALID_OFFSET;
713 EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
715 static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
717 int i, not_empty = 0;
718 u8 buff[sizeof(struct iwl_wep_cmd) +
719 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
720 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
721 size_t cmd_size = sizeof(struct iwl_wep_cmd);
722 struct iwl_host_cmd cmd = {
730 memset(wep_cmd, 0, cmd_size +
731 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
733 for (i = 0; i < WEP_KEYS_MAX ; i++) {
734 wep_cmd->key[i].key_index = i;
735 if (priv->wep_keys[i].key_size) {
736 wep_cmd->key[i].key_offset = i;
739 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
742 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
743 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
744 priv->wep_keys[i].key_size);
747 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
748 wep_cmd->num_keys = WEP_KEYS_MAX;
750 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
754 if (not_empty || send_if_empty)
755 return iwl_send_cmd(priv, &cmd);
760 int iwl_restore_default_wep_keys(struct iwl_priv *priv)
762 WARN_ON(!mutex_is_locked(&priv->mutex));
764 return iwl_send_static_wepkey_cmd(priv, 0);
766 EXPORT_SYMBOL(iwl_restore_default_wep_keys);
768 int iwl_remove_default_wep_key(struct iwl_priv *priv,
769 struct ieee80211_key_conf *keyconf)
773 WARN_ON(!mutex_is_locked(&priv->mutex));
775 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
778 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
779 if (iwl_is_rfkill(priv)) {
780 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
781 /* but keys in device are clear anyway so return success */
784 ret = iwl_send_static_wepkey_cmd(priv, 1);
785 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
786 keyconf->keyidx, ret);
790 EXPORT_SYMBOL(iwl_remove_default_wep_key);
792 int iwl_set_default_wep_key(struct iwl_priv *priv,
793 struct ieee80211_key_conf *keyconf)
797 WARN_ON(!mutex_is_locked(&priv->mutex));
799 if (keyconf->keylen != WEP_KEY_LEN_128 &&
800 keyconf->keylen != WEP_KEY_LEN_64) {
801 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
805 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
806 keyconf->hw_key_idx = HW_KEY_DEFAULT;
807 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
809 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
810 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
813 ret = iwl_send_static_wepkey_cmd(priv, 0);
814 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
815 keyconf->keylen, keyconf->keyidx, ret);
819 EXPORT_SYMBOL(iwl_set_default_wep_key);
821 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
822 struct ieee80211_key_conf *keyconf,
826 __le16 key_flags = 0;
829 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
831 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
832 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
833 key_flags &= ~STA_KEY_FLG_INVALID;
835 if (keyconf->keylen == WEP_KEY_LEN_128)
836 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
838 if (sta_id == priv->hw_params.bcast_sta_id)
839 key_flags |= STA_KEY_MULTICAST_MSK;
841 spin_lock_irqsave(&priv->sta_lock, flags);
843 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
844 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
845 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
847 memcpy(priv->stations[sta_id].keyinfo.key,
848 keyconf->key, keyconf->keylen);
850 memcpy(&priv->stations[sta_id].sta.key.key[3],
851 keyconf->key, keyconf->keylen);
853 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
854 == STA_KEY_FLG_NO_ENC)
855 priv->stations[sta_id].sta.key.key_offset =
856 iwl_get_free_ucode_key_index(priv);
857 /* else, we are overriding an existing key => no need to allocated room
860 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
861 "no space for a new key");
863 priv->stations[sta_id].sta.key.key_flags = key_flags;
864 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
865 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
867 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
869 spin_unlock_irqrestore(&priv->sta_lock, flags);
874 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
875 struct ieee80211_key_conf *keyconf,
879 __le16 key_flags = 0;
882 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
883 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
884 key_flags &= ~STA_KEY_FLG_INVALID;
886 if (sta_id == priv->hw_params.bcast_sta_id)
887 key_flags |= STA_KEY_MULTICAST_MSK;
889 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
891 spin_lock_irqsave(&priv->sta_lock, flags);
892 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
893 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
895 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
898 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
901 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
902 == STA_KEY_FLG_NO_ENC)
903 priv->stations[sta_id].sta.key.key_offset =
904 iwl_get_free_ucode_key_index(priv);
905 /* else, we are overriding an existing key => no need to allocated room
908 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
909 "no space for a new key");
911 priv->stations[sta_id].sta.key.key_flags = key_flags;
912 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
913 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
915 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
917 spin_unlock_irqrestore(&priv->sta_lock, flags);
922 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
923 struct ieee80211_key_conf *keyconf,
928 __le16 key_flags = 0;
930 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
931 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
932 key_flags &= ~STA_KEY_FLG_INVALID;
934 if (sta_id == priv->hw_params.bcast_sta_id)
935 key_flags |= STA_KEY_MULTICAST_MSK;
937 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
938 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
940 spin_lock_irqsave(&priv->sta_lock, flags);
942 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
943 priv->stations[sta_id].keyinfo.keylen = 16;
945 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
946 == STA_KEY_FLG_NO_ENC)
947 priv->stations[sta_id].sta.key.key_offset =
948 iwl_get_free_ucode_key_index(priv);
949 /* else, we are overriding an existing key => no need to allocated room
952 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
953 "no space for a new key");
955 priv->stations[sta_id].sta.key.key_flags = key_flags;
958 /* This copy is acutally not needed: we get the key with each TX */
959 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
961 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
963 spin_unlock_irqrestore(&priv->sta_lock, flags);
968 void iwl_update_tkip_key(struct iwl_priv *priv,
969 struct ieee80211_key_conf *keyconf,
970 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
977 sta_id = iwl_sta_id(sta);
979 if (sta_id == IWL_INVALID_STATION) {
980 IWL_DEBUG_MAC80211(priv, "leave - %pM not initialised.\n",
985 sta_id = priv->hw_params.bcast_sta_id;
988 if (iwl_scan_cancel(priv)) {
989 /* cancel scan failed, just live w/ bad key and rely
990 briefly on SW decryption */
994 spin_lock_irqsave(&priv->sta_lock, flags);
996 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
998 for (i = 0; i < 5; i++)
999 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
1000 cpu_to_le16(phase1key[i]);
1002 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1003 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1005 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1007 spin_unlock_irqrestore(&priv->sta_lock, flags);
1010 EXPORT_SYMBOL(iwl_update_tkip_key);
1012 int iwl_remove_dynamic_key(struct iwl_priv *priv,
1013 struct ieee80211_key_conf *keyconf,
1016 unsigned long flags;
1021 priv->key_mapping_key--;
1023 spin_lock_irqsave(&priv->sta_lock, flags);
1024 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
1025 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
1027 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
1028 keyconf->keyidx, sta_id);
1030 if (keyconf->keyidx != keyidx) {
1031 /* We need to remove a key with index different that the one
1032 * in the uCode. This means that the key we need to remove has
1033 * been replaced by another one with different index.
1034 * Don't do anything and return ok
1036 spin_unlock_irqrestore(&priv->sta_lock, flags);
1040 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
1041 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
1042 keyconf->keyidx, key_flags);
1043 spin_unlock_irqrestore(&priv->sta_lock, flags);
1047 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
1048 &priv->ucode_key_table))
1049 IWL_ERR(priv, "index %d not used in uCode key table.\n",
1050 priv->stations[sta_id].sta.key.key_offset);
1051 memset(&priv->stations[sta_id].keyinfo, 0,
1052 sizeof(struct iwl_hw_key));
1053 memset(&priv->stations[sta_id].sta.key, 0,
1054 sizeof(struct iwl4965_keyinfo));
1055 priv->stations[sta_id].sta.key.key_flags =
1056 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
1057 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
1058 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1059 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1061 if (iwl_is_rfkill(priv)) {
1062 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n");
1063 spin_unlock_irqrestore(&priv->sta_lock, flags);
1066 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1067 spin_unlock_irqrestore(&priv->sta_lock, flags);
1070 EXPORT_SYMBOL(iwl_remove_dynamic_key);
1072 int iwl_set_dynamic_key(struct iwl_priv *priv,
1073 struct ieee80211_key_conf *keyconf, u8 sta_id)
1077 priv->key_mapping_key++;
1078 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
1080 switch (keyconf->alg) {
1082 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
1085 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
1088 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
1092 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
1096 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
1097 keyconf->alg, keyconf->keylen, keyconf->keyidx,
1102 EXPORT_SYMBOL(iwl_set_dynamic_key);
1104 #ifdef CONFIG_IWLWIFI_DEBUG
1105 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
1106 struct iwl_link_quality_cmd *lq)
1109 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
1110 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
1111 lq->general_params.single_stream_ant_msk,
1112 lq->general_params.dual_stream_ant_msk);
1114 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
1115 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
1116 i, lq->rs_table[i].rate_n_flags);
1119 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
1120 struct iwl_link_quality_cmd *lq)
1126 * is_lq_table_valid() - Test one aspect of LQ cmd for validity
1128 * It sometimes happens when a HT rate has been in use and we
1129 * loose connectivity with AP then mac80211 will first tell us that the
1130 * current channel is not HT anymore before removing the station. In such a
1131 * scenario the RXON flags will be updated to indicate we are not
1132 * communicating HT anymore, but the LQ command may still contain HT rates.
1133 * Test for this to prevent driver from sending LQ command between the time
1134 * RXON flags are updated and when LQ command is updated.
1136 static bool is_lq_table_valid(struct iwl_priv *priv,
1137 struct iwl_link_quality_cmd *lq)
1140 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
1145 IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
1146 priv->active_rxon.channel);
1147 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
1148 if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) {
1149 IWL_DEBUG_INFO(priv,
1150 "index %d of LQ expects HT channel\n",
1159 * iwl_send_lq_cmd() - Send link quality command
1160 * @init: This command is sent as part of station initialization right
1161 * after station has been added.
1163 * The link quality command is sent as the last step of station creation.
1164 * This is the special case in which init is set and we call a callback in
1165 * this case to clear the state indicating that station creation is in
1168 int iwl_send_lq_cmd(struct iwl_priv *priv,
1169 struct iwl_link_quality_cmd *lq, u8 flags, bool init)
1172 unsigned long flags_spin;
1174 struct iwl_host_cmd cmd = {
1175 .id = REPLY_TX_LINK_QUALITY_CMD,
1176 .len = sizeof(struct iwl_link_quality_cmd),
1181 if (WARN_ON(lq->sta_id == IWL_INVALID_STATION))
1184 iwl_dump_lq_cmd(priv, lq);
1185 BUG_ON(init && (cmd.flags & CMD_ASYNC));
1187 if (is_lq_table_valid(priv, lq))
1188 ret = iwl_send_cmd(priv, &cmd);
1192 if (cmd.flags & CMD_ASYNC)
1196 IWL_DEBUG_INFO(priv, "init LQ command complete, clearing sta addition status for sta %d\n",
1198 spin_lock_irqsave(&priv->sta_lock, flags_spin);
1199 priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
1200 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
1204 EXPORT_SYMBOL(iwl_send_lq_cmd);
1207 * iwl_alloc_bcast_station - add broadcast station into driver's station table.
1209 * This adds the broadcast station into the driver's station table
1210 * and marks it driver active, so that it will be restored to the
1211 * device at the next best time.
1213 int iwl_alloc_bcast_station(struct iwl_priv *priv, bool init_lq)
1215 struct iwl_link_quality_cmd *link_cmd;
1216 unsigned long flags;
1219 spin_lock_irqsave(&priv->sta_lock, flags);
1220 sta_id = iwl_prep_station(priv, iwl_bcast_addr, false, NULL);
1221 if (sta_id == IWL_INVALID_STATION) {
1222 IWL_ERR(priv, "Unable to prepare broadcast station\n");
1223 spin_unlock_irqrestore(&priv->sta_lock, flags);
1228 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
1229 priv->stations[sta_id].used |= IWL_STA_BCAST;
1230 spin_unlock_irqrestore(&priv->sta_lock, flags);
1233 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
1236 "Unable to initialize rate scaling for bcast station.\n");
1240 spin_lock_irqsave(&priv->sta_lock, flags);
1241 priv->stations[sta_id].lq = link_cmd;
1242 spin_unlock_irqrestore(&priv->sta_lock, flags);
1247 EXPORT_SYMBOL_GPL(iwl_alloc_bcast_station);
1249 void iwl_dealloc_bcast_station(struct iwl_priv *priv)
1251 unsigned long flags;
1254 spin_lock_irqsave(&priv->sta_lock, flags);
1255 for (i = 0; i < priv->hw_params.max_stations; i++) {
1256 if (!(priv->stations[i].used & IWL_STA_BCAST))
1259 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
1260 priv->num_stations--;
1261 BUG_ON(priv->num_stations < 0);
1262 kfree(priv->stations[i].lq);
1263 priv->stations[i].lq = NULL;
1265 spin_unlock_irqrestore(&priv->sta_lock, flags);
1267 EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_station);
1270 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1272 void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1274 unsigned long flags;
1276 /* Remove "disable" flag, to enable Tx for this TID */
1277 spin_lock_irqsave(&priv->sta_lock, flags);
1278 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1279 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1280 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1281 spin_unlock_irqrestore(&priv->sta_lock, flags);
1283 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1285 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1287 int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
1290 unsigned long flags;
1293 sta_id = iwl_sta_id(sta);
1294 if (sta_id == IWL_INVALID_STATION)
1297 spin_lock_irqsave(&priv->sta_lock, flags);
1298 priv->stations[sta_id].sta.station_flags_msk = 0;
1299 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1300 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1301 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1302 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1303 spin_unlock_irqrestore(&priv->sta_lock, flags);
1305 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1308 EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1310 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
1313 unsigned long flags;
1316 sta_id = iwl_sta_id(sta);
1317 if (sta_id == IWL_INVALID_STATION) {
1318 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1322 spin_lock_irqsave(&priv->sta_lock, flags);
1323 priv->stations[sta_id].sta.station_flags_msk = 0;
1324 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1325 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1326 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1327 spin_unlock_irqrestore(&priv->sta_lock, flags);
1329 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1332 EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1334 void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1336 unsigned long flags;
1338 spin_lock_irqsave(&priv->sta_lock, flags);
1339 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1340 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1341 priv->stations[sta_id].sta.sta.modify_mask = 0;
1342 priv->stations[sta_id].sta.sleep_tx_count = 0;
1343 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1344 spin_unlock_irqrestore(&priv->sta_lock, flags);
1346 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1348 EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
1350 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1352 unsigned long flags;
1354 spin_lock_irqsave(&priv->sta_lock, flags);
1355 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1356 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1357 priv->stations[sta_id].sta.sta.modify_mask =
1358 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1359 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1360 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1361 spin_unlock_irqrestore(&priv->sta_lock, flags);
1363 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1365 EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count);
1367 int iwl_mac_sta_remove(struct ieee80211_hw *hw,
1368 struct ieee80211_vif *vif,
1369 struct ieee80211_sta *sta)
1371 struct iwl_priv *priv = hw->priv;
1372 struct iwl_station_priv_common *sta_common = (void *)sta->drv_priv;
1375 IWL_DEBUG_INFO(priv, "received request to remove station %pM\n",
1377 ret = iwl_remove_station(priv, sta_common->sta_id, sta->addr);
1379 IWL_ERR(priv, "Error removing station %pM\n",
1383 EXPORT_SYMBOL(iwl_mac_sta_remove);