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;
288 * OK to call unconditionally, since local stations (IBSS BSSID
289 * STA and broadcast STA) pass in a NULL ht_info, and mac80211
290 * doesn't allow HT IBSS.
292 iwl_set_ht_add_station(priv, sta_id, ht_info);
295 rate = (priv->band == IEEE80211_BAND_5GHZ) ?
296 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
297 /* Turn on both antennas for the station... */
298 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
304 #define STA_WAIT_TIMEOUT (HZ/2)
307 * iwl_add_station_common -
309 int iwl_add_station_common(struct iwl_priv *priv, const u8 *addr,
311 struct ieee80211_sta_ht_cap *ht_info,
314 struct iwl_station_entry *station;
315 unsigned long flags_spin;
320 spin_lock_irqsave(&priv->sta_lock, flags_spin);
321 sta_id = iwl_prep_station(priv, addr, is_ap, ht_info);
322 if (sta_id == IWL_INVALID_STATION) {
323 IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
325 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
330 * uCode is not able to deal with multiple requests to add a
331 * station. Keep track if one is in progress so that we do not send
334 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
335 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
337 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
341 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
342 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
343 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
345 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
349 priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
350 station = &priv->stations[sta_id];
351 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
353 /* Add station to device's station table */
354 ret = iwl_send_add_sta(priv, &station->sta, CMD_SYNC);
356 IWL_ERR(priv, "Adding station %pM failed.\n", station->sta.sta.addr);
357 spin_lock_irqsave(&priv->sta_lock, flags_spin);
358 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
359 priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
360 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
365 EXPORT_SYMBOL(iwl_add_station_common);
367 static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv,
371 struct iwl_link_quality_cmd *link_cmd;
374 link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
376 IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
379 /* Set up the rate scaling to start at selected rate, fall back
380 * all the way down to 1M in IEEE order, and then spin on 1M */
381 if (priv->band == IEEE80211_BAND_5GHZ)
382 r = IWL_RATE_6M_INDEX;
384 r = IWL_RATE_1M_INDEX;
386 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
388 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
389 rate_flags |= RATE_MCS_CCK_MSK;
391 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
394 link_cmd->rs_table[i].rate_n_flags =
395 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
396 r = iwl_get_prev_ieee_rate(r);
399 link_cmd->general_params.single_stream_ant_msk =
400 first_antenna(priv->hw_params.valid_tx_ant);
402 link_cmd->general_params.dual_stream_ant_msk =
403 priv->hw_params.valid_tx_ant &
404 ~first_antenna(priv->hw_params.valid_tx_ant);
405 if (!link_cmd->general_params.dual_stream_ant_msk) {
406 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
407 } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) {
408 link_cmd->general_params.dual_stream_ant_msk =
409 priv->hw_params.valid_tx_ant;
412 link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
413 link_cmd->agg_params.agg_time_limit =
414 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
416 link_cmd->sta_id = sta_id;
422 * iwl_add_bssid_station - Add the special IBSS BSSID station
426 int iwl_add_bssid_station(struct iwl_priv *priv, const u8 *addr, bool init_rs,
431 struct iwl_link_quality_cmd *link_cmd;
435 *sta_id_r = IWL_INVALID_STATION;
437 ret = iwl_add_station_common(priv, addr, 0, NULL, &sta_id);
439 IWL_ERR(priv, "Unable to add station %pM\n", addr);
446 spin_lock_irqsave(&priv->sta_lock, flags);
447 priv->stations[sta_id].used |= IWL_STA_LOCAL;
448 spin_unlock_irqrestore(&priv->sta_lock, flags);
451 /* Set up default rate scaling table in device's station table */
452 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
454 IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n",
459 ret = iwl_send_lq_cmd(priv, link_cmd, CMD_SYNC, true);
461 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
463 spin_lock_irqsave(&priv->sta_lock, flags);
464 priv->stations[sta_id].lq = link_cmd;
465 spin_unlock_irqrestore(&priv->sta_lock, flags);
470 EXPORT_SYMBOL(iwl_add_bssid_station);
473 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
475 * priv->sta_lock must be held
477 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
479 /* Ucode must be active and driver must be non active */
480 if ((priv->stations[sta_id].used &
481 (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != IWL_STA_UCODE_ACTIVE)
482 IWL_ERR(priv, "removed non active STA %u\n", sta_id);
484 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
486 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
487 IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
490 static int iwl_send_remove_station(struct iwl_priv *priv,
491 struct iwl_station_entry *station)
493 struct iwl_rx_packet *pkt;
496 unsigned long flags_spin;
497 struct iwl_rem_sta_cmd rm_sta_cmd;
499 struct iwl_host_cmd cmd = {
500 .id = REPLY_REMOVE_STA,
501 .len = sizeof(struct iwl_rem_sta_cmd),
506 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
507 rm_sta_cmd.num_sta = 1;
508 memcpy(&rm_sta_cmd.addr, &station->sta.sta.addr , ETH_ALEN);
510 cmd.flags |= CMD_WANT_SKB;
512 ret = iwl_send_cmd(priv, &cmd);
517 pkt = (struct iwl_rx_packet *)cmd.reply_page;
518 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
519 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
525 switch (pkt->u.rem_sta.status) {
526 case REM_STA_SUCCESS_MSK:
527 spin_lock_irqsave(&priv->sta_lock, flags_spin);
528 iwl_sta_ucode_deactivate(priv, station->sta.sta.sta_id);
529 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
530 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
534 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
538 iwl_free_pages(priv, cmd.reply_page);
544 * iwl_remove_station - Remove driver's knowledge of station.
546 int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
549 struct iwl_station_entry *station;
552 if (!iwl_is_ready(priv)) {
554 "Unable to remove station %pM, device not ready.\n",
557 * It is typical for stations to be removed when we are
558 * going down. Return success since device will be down
564 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
567 if (WARN_ON(sta_id == IWL_INVALID_STATION))
570 spin_lock_irqsave(&priv->sta_lock, flags);
572 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
573 IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
578 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
579 IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
584 if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
585 kfree(priv->stations[sta_id].lq);
586 priv->stations[sta_id].lq = NULL;
589 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
591 priv->num_stations--;
593 BUG_ON(priv->num_stations < 0);
595 station = &priv->stations[sta_id];
596 spin_unlock_irqrestore(&priv->sta_lock, flags);
598 return iwl_send_remove_station(priv, station);
600 spin_unlock_irqrestore(&priv->sta_lock, flags);
603 EXPORT_SYMBOL_GPL(iwl_remove_station);
606 * iwl_clear_ucode_stations - clear ucode station table bits
608 * This function clears all the bits in the driver indicating
609 * which stations are active in the ucode. Call when something
610 * other than explicit station management would cause this in
611 * the ucode, e.g. unassociated RXON.
613 void iwl_clear_ucode_stations(struct iwl_priv *priv)
616 unsigned long flags_spin;
617 bool cleared = false;
619 IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
621 spin_lock_irqsave(&priv->sta_lock, flags_spin);
622 for (i = 0; i < priv->hw_params.max_stations; i++) {
623 if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
624 IWL_DEBUG_INFO(priv, "Clearing ucode active for station %d\n", i);
625 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
629 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
632 IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n");
634 EXPORT_SYMBOL(iwl_clear_ucode_stations);
637 * iwl_restore_stations() - Restore driver known stations to device
639 * All stations considered active by driver, but not present in ucode, is
644 void iwl_restore_stations(struct iwl_priv *priv)
646 struct iwl_station_entry *station;
647 unsigned long flags_spin;
652 if (!iwl_is_ready(priv)) {
653 IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n");
657 IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
658 spin_lock_irqsave(&priv->sta_lock, flags_spin);
659 for (i = 0; i < priv->hw_params.max_stations; i++) {
660 if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
661 !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
662 IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
663 priv->stations[i].sta.sta.addr);
664 priv->stations[i].sta.mode = 0;
665 priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
670 for (i = 0; i < priv->hw_params.max_stations; i++) {
671 if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
672 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
673 station = &priv->stations[i];
674 ret = iwl_send_add_sta(priv, &priv->stations[i].sta, CMD_SYNC);
676 IWL_ERR(priv, "Adding station %pM failed.\n",
677 station->sta.sta.addr);
678 spin_lock_irqsave(&priv->sta_lock, flags_spin);
679 priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE;
680 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
681 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
684 * Rate scaling has already been initialized, send
688 iwl_send_lq_cmd(priv, station->lq, CMD_SYNC, true);
689 spin_lock_irqsave(&priv->sta_lock, flags_spin);
690 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
694 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
696 IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n");
698 IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n");
700 EXPORT_SYMBOL(iwl_restore_stations);
702 int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
706 for (i = 0; i < STA_KEY_MAX_NUM; i++)
707 if (!test_and_set_bit(i, &priv->ucode_key_table))
710 return WEP_INVALID_OFFSET;
712 EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
714 static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
716 int i, not_empty = 0;
717 u8 buff[sizeof(struct iwl_wep_cmd) +
718 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
719 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
720 size_t cmd_size = sizeof(struct iwl_wep_cmd);
721 struct iwl_host_cmd cmd = {
729 memset(wep_cmd, 0, cmd_size +
730 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
732 for (i = 0; i < WEP_KEYS_MAX ; i++) {
733 wep_cmd->key[i].key_index = i;
734 if (priv->wep_keys[i].key_size) {
735 wep_cmd->key[i].key_offset = i;
738 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
741 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
742 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
743 priv->wep_keys[i].key_size);
746 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
747 wep_cmd->num_keys = WEP_KEYS_MAX;
749 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
753 if (not_empty || send_if_empty)
754 return iwl_send_cmd(priv, &cmd);
759 int iwl_restore_default_wep_keys(struct iwl_priv *priv)
761 WARN_ON(!mutex_is_locked(&priv->mutex));
763 return iwl_send_static_wepkey_cmd(priv, 0);
765 EXPORT_SYMBOL(iwl_restore_default_wep_keys);
767 int iwl_remove_default_wep_key(struct iwl_priv *priv,
768 struct ieee80211_key_conf *keyconf)
772 WARN_ON(!mutex_is_locked(&priv->mutex));
774 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
777 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
778 if (iwl_is_rfkill(priv)) {
779 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
780 /* but keys in device are clear anyway so return success */
783 ret = iwl_send_static_wepkey_cmd(priv, 1);
784 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
785 keyconf->keyidx, ret);
789 EXPORT_SYMBOL(iwl_remove_default_wep_key);
791 int iwl_set_default_wep_key(struct iwl_priv *priv,
792 struct ieee80211_key_conf *keyconf)
796 WARN_ON(!mutex_is_locked(&priv->mutex));
798 if (keyconf->keylen != WEP_KEY_LEN_128 &&
799 keyconf->keylen != WEP_KEY_LEN_64) {
800 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
804 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
805 keyconf->hw_key_idx = HW_KEY_DEFAULT;
806 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
808 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
809 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
812 ret = iwl_send_static_wepkey_cmd(priv, 0);
813 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
814 keyconf->keylen, keyconf->keyidx, ret);
818 EXPORT_SYMBOL(iwl_set_default_wep_key);
820 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
821 struct ieee80211_key_conf *keyconf,
825 __le16 key_flags = 0;
828 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
830 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
831 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
832 key_flags &= ~STA_KEY_FLG_INVALID;
834 if (keyconf->keylen == WEP_KEY_LEN_128)
835 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
837 if (sta_id == priv->hw_params.bcast_sta_id)
838 key_flags |= STA_KEY_MULTICAST_MSK;
840 spin_lock_irqsave(&priv->sta_lock, flags);
842 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
843 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
844 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
846 memcpy(priv->stations[sta_id].keyinfo.key,
847 keyconf->key, keyconf->keylen);
849 memcpy(&priv->stations[sta_id].sta.key.key[3],
850 keyconf->key, keyconf->keylen);
852 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
853 == STA_KEY_FLG_NO_ENC)
854 priv->stations[sta_id].sta.key.key_offset =
855 iwl_get_free_ucode_key_index(priv);
856 /* else, we are overriding an existing key => no need to allocated room
859 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
860 "no space for a new key");
862 priv->stations[sta_id].sta.key.key_flags = key_flags;
863 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
864 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
866 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
868 spin_unlock_irqrestore(&priv->sta_lock, flags);
873 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
874 struct ieee80211_key_conf *keyconf,
878 __le16 key_flags = 0;
881 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
882 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
883 key_flags &= ~STA_KEY_FLG_INVALID;
885 if (sta_id == priv->hw_params.bcast_sta_id)
886 key_flags |= STA_KEY_MULTICAST_MSK;
888 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
890 spin_lock_irqsave(&priv->sta_lock, flags);
891 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
892 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
894 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
897 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
900 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
901 == STA_KEY_FLG_NO_ENC)
902 priv->stations[sta_id].sta.key.key_offset =
903 iwl_get_free_ucode_key_index(priv);
904 /* else, we are overriding an existing key => no need to allocated room
907 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
908 "no space for a new key");
910 priv->stations[sta_id].sta.key.key_flags = key_flags;
911 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
912 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
914 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
916 spin_unlock_irqrestore(&priv->sta_lock, flags);
921 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
922 struct ieee80211_key_conf *keyconf,
927 __le16 key_flags = 0;
929 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
930 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
931 key_flags &= ~STA_KEY_FLG_INVALID;
933 if (sta_id == priv->hw_params.bcast_sta_id)
934 key_flags |= STA_KEY_MULTICAST_MSK;
936 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
937 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
939 spin_lock_irqsave(&priv->sta_lock, flags);
941 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
942 priv->stations[sta_id].keyinfo.keylen = 16;
944 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
945 == STA_KEY_FLG_NO_ENC)
946 priv->stations[sta_id].sta.key.key_offset =
947 iwl_get_free_ucode_key_index(priv);
948 /* else, we are overriding an existing key => no need to allocated room
951 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
952 "no space for a new key");
954 priv->stations[sta_id].sta.key.key_flags = key_flags;
957 /* This copy is acutally not needed: we get the key with each TX */
958 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
960 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
962 spin_unlock_irqrestore(&priv->sta_lock, flags);
967 void iwl_update_tkip_key(struct iwl_priv *priv,
968 struct ieee80211_key_conf *keyconf,
969 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
976 sta_id = iwl_sta_id(sta);
978 if (sta_id == IWL_INVALID_STATION) {
979 IWL_DEBUG_MAC80211(priv, "leave - %pM not initialised.\n",
984 sta_id = priv->hw_params.bcast_sta_id;
987 if (iwl_scan_cancel(priv)) {
988 /* cancel scan failed, just live w/ bad key and rely
989 briefly on SW decryption */
993 spin_lock_irqsave(&priv->sta_lock, flags);
995 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
997 for (i = 0; i < 5; i++)
998 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
999 cpu_to_le16(phase1key[i]);
1001 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1002 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1004 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1006 spin_unlock_irqrestore(&priv->sta_lock, flags);
1009 EXPORT_SYMBOL(iwl_update_tkip_key);
1011 int iwl_remove_dynamic_key(struct iwl_priv *priv,
1012 struct ieee80211_key_conf *keyconf,
1015 unsigned long flags;
1020 priv->key_mapping_key--;
1022 spin_lock_irqsave(&priv->sta_lock, flags);
1023 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
1024 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
1026 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
1027 keyconf->keyidx, sta_id);
1029 if (keyconf->keyidx != keyidx) {
1030 /* We need to remove a key with index different that the one
1031 * in the uCode. This means that the key we need to remove has
1032 * been replaced by another one with different index.
1033 * Don't do anything and return ok
1035 spin_unlock_irqrestore(&priv->sta_lock, flags);
1039 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
1040 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
1041 keyconf->keyidx, key_flags);
1042 spin_unlock_irqrestore(&priv->sta_lock, flags);
1046 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
1047 &priv->ucode_key_table))
1048 IWL_ERR(priv, "index %d not used in uCode key table.\n",
1049 priv->stations[sta_id].sta.key.key_offset);
1050 memset(&priv->stations[sta_id].keyinfo, 0,
1051 sizeof(struct iwl_hw_key));
1052 memset(&priv->stations[sta_id].sta.key, 0,
1053 sizeof(struct iwl4965_keyinfo));
1054 priv->stations[sta_id].sta.key.key_flags =
1055 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
1056 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
1057 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1058 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1060 if (iwl_is_rfkill(priv)) {
1061 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n");
1062 spin_unlock_irqrestore(&priv->sta_lock, flags);
1065 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1066 spin_unlock_irqrestore(&priv->sta_lock, flags);
1069 EXPORT_SYMBOL(iwl_remove_dynamic_key);
1071 int iwl_set_dynamic_key(struct iwl_priv *priv,
1072 struct ieee80211_key_conf *keyconf, u8 sta_id)
1076 priv->key_mapping_key++;
1077 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
1079 switch (keyconf->alg) {
1081 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
1084 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
1087 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
1091 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
1095 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
1096 keyconf->alg, keyconf->keylen, keyconf->keyidx,
1101 EXPORT_SYMBOL(iwl_set_dynamic_key);
1103 #ifdef CONFIG_IWLWIFI_DEBUG
1104 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
1105 struct iwl_link_quality_cmd *lq)
1108 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
1109 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
1110 lq->general_params.single_stream_ant_msk,
1111 lq->general_params.dual_stream_ant_msk);
1113 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
1114 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
1115 i, lq->rs_table[i].rate_n_flags);
1118 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
1119 struct iwl_link_quality_cmd *lq)
1125 * is_lq_table_valid() - Test one aspect of LQ cmd for validity
1127 * It sometimes happens when a HT rate has been in use and we
1128 * loose connectivity with AP then mac80211 will first tell us that the
1129 * current channel is not HT anymore before removing the station. In such a
1130 * scenario the RXON flags will be updated to indicate we are not
1131 * communicating HT anymore, but the LQ command may still contain HT rates.
1132 * Test for this to prevent driver from sending LQ command between the time
1133 * RXON flags are updated and when LQ command is updated.
1135 static bool is_lq_table_valid(struct iwl_priv *priv,
1136 struct iwl_link_quality_cmd *lq)
1139 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
1144 IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
1145 priv->active_rxon.channel);
1146 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
1147 if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) {
1148 IWL_DEBUG_INFO(priv,
1149 "index %d of LQ expects HT channel\n",
1158 * iwl_send_lq_cmd() - Send link quality command
1159 * @init: This command is sent as part of station initialization right
1160 * after station has been added.
1162 * The link quality command is sent as the last step of station creation.
1163 * This is the special case in which init is set and we call a callback in
1164 * this case to clear the state indicating that station creation is in
1167 int iwl_send_lq_cmd(struct iwl_priv *priv,
1168 struct iwl_link_quality_cmd *lq, u8 flags, bool init)
1171 unsigned long flags_spin;
1173 struct iwl_host_cmd cmd = {
1174 .id = REPLY_TX_LINK_QUALITY_CMD,
1175 .len = sizeof(struct iwl_link_quality_cmd),
1180 if (WARN_ON(lq->sta_id == IWL_INVALID_STATION))
1183 iwl_dump_lq_cmd(priv, lq);
1184 BUG_ON(init && (cmd.flags & CMD_ASYNC));
1186 if (is_lq_table_valid(priv, lq))
1187 ret = iwl_send_cmd(priv, &cmd);
1191 if (cmd.flags & CMD_ASYNC)
1195 IWL_DEBUG_INFO(priv, "init LQ command complete, clearing sta addition status for sta %d\n",
1197 spin_lock_irqsave(&priv->sta_lock, flags_spin);
1198 priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
1199 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
1203 EXPORT_SYMBOL(iwl_send_lq_cmd);
1206 * iwl_alloc_bcast_station - add broadcast station into driver's station table.
1208 * This adds the broadcast station into the driver's station table
1209 * and marks it driver active, so that it will be restored to the
1210 * device at the next best time.
1212 int iwl_alloc_bcast_station(struct iwl_priv *priv, bool init_lq)
1214 struct iwl_link_quality_cmd *link_cmd;
1215 unsigned long flags;
1218 spin_lock_irqsave(&priv->sta_lock, flags);
1219 sta_id = iwl_prep_station(priv, iwl_bcast_addr, false, NULL);
1220 if (sta_id == IWL_INVALID_STATION) {
1221 IWL_ERR(priv, "Unable to prepare broadcast station\n");
1222 spin_unlock_irqrestore(&priv->sta_lock, flags);
1227 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
1228 priv->stations[sta_id].used |= IWL_STA_BCAST;
1229 spin_unlock_irqrestore(&priv->sta_lock, flags);
1232 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
1235 "Unable to initialize rate scaling for bcast station.\n");
1239 spin_lock_irqsave(&priv->sta_lock, flags);
1240 priv->stations[sta_id].lq = link_cmd;
1241 spin_unlock_irqrestore(&priv->sta_lock, flags);
1246 EXPORT_SYMBOL_GPL(iwl_alloc_bcast_station);
1248 void iwl_dealloc_bcast_station(struct iwl_priv *priv)
1250 unsigned long flags;
1253 spin_lock_irqsave(&priv->sta_lock, flags);
1254 for (i = 0; i < priv->hw_params.max_stations; i++) {
1255 if (!(priv->stations[i].used & IWL_STA_BCAST))
1258 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
1259 priv->num_stations--;
1260 BUG_ON(priv->num_stations < 0);
1261 kfree(priv->stations[i].lq);
1262 priv->stations[i].lq = NULL;
1264 spin_unlock_irqrestore(&priv->sta_lock, flags);
1266 EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_station);
1269 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1271 void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1273 unsigned long flags;
1275 /* Remove "disable" flag, to enable Tx for this TID */
1276 spin_lock_irqsave(&priv->sta_lock, flags);
1277 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1278 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1279 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1280 spin_unlock_irqrestore(&priv->sta_lock, flags);
1282 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1284 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1286 int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
1289 unsigned long flags;
1292 sta_id = iwl_sta_id(sta);
1293 if (sta_id == IWL_INVALID_STATION)
1296 spin_lock_irqsave(&priv->sta_lock, flags);
1297 priv->stations[sta_id].sta.station_flags_msk = 0;
1298 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1299 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1300 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1301 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1302 spin_unlock_irqrestore(&priv->sta_lock, flags);
1304 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1307 EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1309 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
1312 unsigned long flags;
1315 sta_id = iwl_sta_id(sta);
1316 if (sta_id == IWL_INVALID_STATION) {
1317 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1321 spin_lock_irqsave(&priv->sta_lock, flags);
1322 priv->stations[sta_id].sta.station_flags_msk = 0;
1323 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1324 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1325 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1326 spin_unlock_irqrestore(&priv->sta_lock, flags);
1328 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1331 EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1333 void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1335 unsigned long flags;
1337 spin_lock_irqsave(&priv->sta_lock, flags);
1338 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1339 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1340 priv->stations[sta_id].sta.sta.modify_mask = 0;
1341 priv->stations[sta_id].sta.sleep_tx_count = 0;
1342 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1343 spin_unlock_irqrestore(&priv->sta_lock, flags);
1345 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1347 EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
1349 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1351 unsigned long flags;
1353 spin_lock_irqsave(&priv->sta_lock, flags);
1354 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1355 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1356 priv->stations[sta_id].sta.sta.modify_mask =
1357 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1358 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1359 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1360 spin_unlock_irqrestore(&priv->sta_lock, flags);
1362 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1364 EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count);
1366 int iwl_mac_sta_remove(struct ieee80211_hw *hw,
1367 struct ieee80211_vif *vif,
1368 struct ieee80211_sta *sta)
1370 struct iwl_priv *priv = hw->priv;
1371 struct iwl_station_priv_common *sta_common = (void *)sta->drv_priv;
1374 IWL_DEBUG_INFO(priv, "received request to remove station %pM\n",
1376 ret = iwl_remove_station(priv, sta_common->sta_id, sta->addr);
1378 IWL_ERR(priv, "Error removing station %pM\n",
1382 EXPORT_SYMBOL(iwl_mac_sta_remove);