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 u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
42 int ret = IWL_INVALID_STATION;
45 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
46 (priv->iw_mode == NL80211_IFTYPE_AP))
49 if (is_broadcast_ether_addr(addr))
50 return priv->hw_params.bcast_sta_id;
52 spin_lock_irqsave(&priv->sta_lock, flags);
53 for (i = start; i < priv->hw_params.max_stations; i++)
54 if (priv->stations[i].used &&
55 (!compare_ether_addr(priv->stations[i].sta.sta.addr,
61 IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n",
62 addr, priv->num_stations);
66 * It may be possible that more commands interacting with stations
67 * arrive before we completed processing the adding of
70 if (ret != IWL_INVALID_STATION &&
71 (!(priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) ||
72 ((priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) &&
73 (priv->stations[ret].used & IWL_STA_UCODE_INPROGRESS)))) {
74 IWL_ERR(priv, "Requested station info for sta %d before ready.\n",
76 ret = IWL_INVALID_STATION;
78 spin_unlock_irqrestore(&priv->sta_lock, flags);
81 EXPORT_SYMBOL(iwl_find_station);
83 /* priv->sta_lock must be held */
84 static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
87 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
88 IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
89 sta_id, priv->stations[sta_id].sta.sta.addr);
91 if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
93 "STA id %u addr %pM already present in uCode (according to driver)\n",
94 sta_id, priv->stations[sta_id].sta.sta.addr);
96 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
97 IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
98 sta_id, priv->stations[sta_id].sta.sta.addr);
102 static void iwl_process_add_sta_resp(struct iwl_priv *priv,
103 struct iwl_addsta_cmd *addsta,
104 struct iwl_rx_packet *pkt,
107 u8 sta_id = addsta->sta.sta_id;
110 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
111 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
116 IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
119 spin_lock_irqsave(&priv->sta_lock, flags);
121 switch (pkt->u.add_sta.status) {
122 case ADD_STA_SUCCESS_MSK:
123 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
124 iwl_sta_ucode_activate(priv, sta_id);
126 case ADD_STA_NO_ROOM_IN_TABLE:
127 IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
130 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
131 IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
134 case ADD_STA_MODIFY_NON_EXIST_STA:
135 IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
139 IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
140 pkt->u.add_sta.status);
144 IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
145 priv->stations[sta_id].sta.mode ==
146 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
147 sta_id, priv->stations[sta_id].sta.sta.addr);
150 * XXX: The MAC address in the command buffer is often changed from
151 * the original sent to the device. That is, the MAC address
152 * written to the command buffer often is not the same MAC adress
153 * read from the command buffer when the command returns. This
154 * issue has not yet been resolved and this debugging is left to
155 * observe the problem.
157 IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
158 priv->stations[sta_id].sta.mode ==
159 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
161 spin_unlock_irqrestore(&priv->sta_lock, flags);
164 static void iwl_add_sta_callback(struct iwl_priv *priv,
165 struct iwl_device_cmd *cmd,
166 struct iwl_rx_packet *pkt)
168 struct iwl_addsta_cmd *addsta =
169 (struct iwl_addsta_cmd *)cmd->cmd.payload;
171 iwl_process_add_sta_resp(priv, addsta, pkt, false);
175 int iwl_send_add_sta(struct iwl_priv *priv,
176 struct iwl_addsta_cmd *sta, u8 flags)
178 struct iwl_rx_packet *pkt = NULL;
180 u8 data[sizeof(*sta)];
181 struct iwl_host_cmd cmd = {
186 u8 sta_id __maybe_unused = sta->sta.sta_id;
188 IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
189 sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
191 if (flags & CMD_ASYNC)
192 cmd.callback = iwl_add_sta_callback;
194 cmd.flags |= CMD_WANT_SKB;
196 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
197 ret = iwl_send_cmd(priv, &cmd);
199 if (ret || (flags & CMD_ASYNC))
203 pkt = (struct iwl_rx_packet *)cmd.reply_page;
204 iwl_process_add_sta_resp(priv, sta, pkt, true);
206 iwl_free_pages(priv, cmd.reply_page);
210 EXPORT_SYMBOL(iwl_send_add_sta);
212 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
213 struct ieee80211_sta_ht_cap *sta_ht_inf)
218 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
221 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
222 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
223 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
225 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
226 "dynamic" : "disabled");
228 sta_flags = priv->stations[index].sta.station_flags;
230 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
232 switch (mimo_ps_mode) {
233 case WLAN_HT_CAP_SM_PS_STATIC:
234 sta_flags |= STA_FLG_MIMO_DIS_MSK;
236 case WLAN_HT_CAP_SM_PS_DYNAMIC:
237 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
239 case WLAN_HT_CAP_SM_PS_DISABLED:
242 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
246 sta_flags |= cpu_to_le32(
247 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
249 sta_flags |= cpu_to_le32(
250 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
252 if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
253 sta_flags |= STA_FLG_HT40_EN_MSK;
255 sta_flags &= ~STA_FLG_HT40_EN_MSK;
257 priv->stations[index].sta.station_flags = sta_flags;
263 * iwl_prep_station - Prepare station information for addition
265 * should be called with sta_lock held
267 static u8 iwl_prep_station(struct iwl_priv *priv, const u8 *addr,
269 struct ieee80211_sta_ht_cap *ht_info)
271 struct iwl_station_entry *station;
273 u8 sta_id = IWL_INVALID_STATION;
278 else if (is_broadcast_ether_addr(addr))
279 sta_id = priv->hw_params.bcast_sta_id;
281 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
282 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
288 if (!priv->stations[i].used &&
289 sta_id == IWL_INVALID_STATION)
294 * These two conditions have the same outcome, but keep them
297 if (unlikely(sta_id == IWL_INVALID_STATION))
301 * uCode is not able to deal with multiple requests to add a
302 * station. Keep track if one is in progress so that we do not send
305 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
306 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
311 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
312 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
313 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
314 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
319 station = &priv->stations[sta_id];
320 station->used = IWL_STA_DRIVER_ACTIVE;
321 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
323 priv->num_stations++;
325 /* Set up the REPLY_ADD_STA command to send to device */
326 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
327 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
328 station->sta.mode = 0;
329 station->sta.sta.sta_id = sta_id;
330 station->sta.station_flags = 0;
332 /* BCAST station and IBSS stations do not work in HT mode */
333 if (sta_id != priv->hw_params.bcast_sta_id &&
334 priv->iw_mode != NL80211_IFTYPE_ADHOC)
335 iwl_set_ht_add_station(priv, sta_id, ht_info);
338 rate = (priv->band == IEEE80211_BAND_5GHZ) ?
339 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
340 /* Turn on both antennas for the station... */
341 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
347 #define STA_WAIT_TIMEOUT (HZ/2)
350 * iwl_add_station_common -
352 int iwl_add_station_common(struct iwl_priv *priv, const u8 *addr,
354 struct ieee80211_sta_ht_cap *ht_info,
357 struct iwl_station_entry *station;
358 unsigned long flags_spin;
363 spin_lock_irqsave(&priv->sta_lock, flags_spin);
364 sta_id = iwl_prep_station(priv, addr, is_ap, ht_info);
365 if (sta_id == IWL_INVALID_STATION) {
366 IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
368 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
373 * uCode is not able to deal with multiple requests to add a
374 * station. Keep track if one is in progress so that we do not send
377 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
378 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
380 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
384 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
385 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
386 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
388 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
392 priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
393 station = &priv->stations[sta_id];
394 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
396 /* Add station to device's station table */
397 ret = iwl_send_add_sta(priv, &station->sta, CMD_SYNC);
399 IWL_ERR(priv, "Adding station %pM failed.\n", station->sta.sta.addr);
400 spin_lock_irqsave(&priv->sta_lock, flags_spin);
401 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
402 priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
403 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
408 EXPORT_SYMBOL(iwl_add_station_common);
410 static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv,
414 struct iwl_link_quality_cmd *link_cmd;
417 link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
419 IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
422 /* Set up the rate scaling to start at selected rate, fall back
423 * all the way down to 1M in IEEE order, and then spin on 1M */
424 if (priv->band == IEEE80211_BAND_5GHZ)
425 r = IWL_RATE_6M_INDEX;
427 r = IWL_RATE_1M_INDEX;
429 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
431 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
432 rate_flags |= RATE_MCS_CCK_MSK;
434 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
437 link_cmd->rs_table[i].rate_n_flags =
438 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
439 r = iwl_get_prev_ieee_rate(r);
442 link_cmd->general_params.single_stream_ant_msk =
443 first_antenna(priv->hw_params.valid_tx_ant);
445 link_cmd->general_params.dual_stream_ant_msk =
446 priv->hw_params.valid_tx_ant &
447 ~first_antenna(priv->hw_params.valid_tx_ant);
448 if (!link_cmd->general_params.dual_stream_ant_msk) {
449 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
450 } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) {
451 link_cmd->general_params.dual_stream_ant_msk =
452 priv->hw_params.valid_tx_ant;
455 link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
456 link_cmd->agg_params.agg_time_limit =
457 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
459 link_cmd->sta_id = sta_id;
465 * iwl_add_local_stations - Add stations not requested by mac80211
467 * This will be either the broadcast station or the bssid station needed by
472 int iwl_add_local_station(struct iwl_priv *priv, const u8 *addr, bool init_rs)
476 struct iwl_link_quality_cmd *link_cmd;
479 ret = iwl_add_station_common(priv, addr, 0, NULL, &sta_id);
481 IWL_ERR(priv, "Unable to add station %pM\n", addr);
485 spin_lock_irqsave(&priv->sta_lock, flags);
486 priv->stations[sta_id].used |= IWL_STA_LOCAL;
487 spin_unlock_irqrestore(&priv->sta_lock, flags);
490 /* Set up default rate scaling table in device's station table */
491 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
493 IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n",
498 ret = iwl_send_lq_cmd(priv, link_cmd, CMD_SYNC, true);
500 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
502 spin_lock_irqsave(&priv->sta_lock, flags);
503 priv->stations[sta_id].lq = link_cmd;
504 spin_unlock_irqrestore(&priv->sta_lock, flags);
509 EXPORT_SYMBOL(iwl_add_local_station);
512 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
514 * priv->sta_lock must be held
516 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
518 /* Ucode must be active and driver must be non active */
519 if ((priv->stations[sta_id].used &
520 (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != IWL_STA_UCODE_ACTIVE)
521 IWL_ERR(priv, "removed non active STA %u\n", sta_id);
523 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
525 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
526 IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
529 static int iwl_send_remove_station(struct iwl_priv *priv,
530 struct iwl_station_entry *station)
532 struct iwl_rx_packet *pkt;
535 unsigned long flags_spin;
536 struct iwl_rem_sta_cmd rm_sta_cmd;
538 struct iwl_host_cmd cmd = {
539 .id = REPLY_REMOVE_STA,
540 .len = sizeof(struct iwl_rem_sta_cmd),
545 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
546 rm_sta_cmd.num_sta = 1;
547 memcpy(&rm_sta_cmd.addr, &station->sta.sta.addr , ETH_ALEN);
549 cmd.flags |= CMD_WANT_SKB;
551 ret = iwl_send_cmd(priv, &cmd);
556 pkt = (struct iwl_rx_packet *)cmd.reply_page;
557 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
558 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
564 switch (pkt->u.rem_sta.status) {
565 case REM_STA_SUCCESS_MSK:
566 spin_lock_irqsave(&priv->sta_lock, flags_spin);
567 iwl_sta_ucode_deactivate(priv, station->sta.sta.sta_id);
568 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
569 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
573 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
577 iwl_free_pages(priv, cmd.reply_page);
583 * iwl_remove_station - Remove driver's knowledge of station.
585 int iwl_remove_station(struct iwl_priv *priv, const u8 *addr)
587 int sta_id = IWL_INVALID_STATION;
588 int i, ret = -EINVAL;
590 bool is_ap = priv->iw_mode == NL80211_IFTYPE_STATION;
591 struct iwl_station_entry *station;
593 if (!iwl_is_ready(priv)) {
595 "Unable to remove station %pM, device not ready.\n",
598 * It is typical for stations to be removed when we are
599 * going down. Return success since device will be down
605 spin_lock_irqsave(&priv->sta_lock, flags);
610 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
611 if (priv->stations[i].used &&
612 !compare_ether_addr(priv->stations[i].sta.sta.addr,
618 if (unlikely(sta_id == IWL_INVALID_STATION))
621 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
624 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
625 IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
630 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
631 IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
636 if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
637 kfree(priv->stations[sta_id].lq);
638 priv->stations[sta_id].lq = NULL;
641 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
643 priv->num_stations--;
645 BUG_ON(priv->num_stations < 0);
647 station = &priv->stations[sta_id];
648 spin_unlock_irqrestore(&priv->sta_lock, flags);
650 ret = iwl_send_remove_station(priv, station);
653 spin_unlock_irqrestore(&priv->sta_lock, flags);
656 EXPORT_SYMBOL_GPL(iwl_remove_station);
659 * iwl_clear_ucode_stations - clear ucode station table bits
661 * This function clears all the bits in the driver indicating
662 * which stations are active in the ucode. Call when something
663 * other than explicit station management would cause this in
664 * the ucode, e.g. unassociated RXON.
666 void iwl_clear_ucode_stations(struct iwl_priv *priv)
669 unsigned long flags_spin;
670 bool cleared = false;
672 IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
674 spin_lock_irqsave(&priv->sta_lock, flags_spin);
675 for (i = 0; i < priv->hw_params.max_stations; i++) {
676 if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
677 IWL_DEBUG_INFO(priv, "Clearing ucode active for station %d\n", i);
678 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
682 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
685 IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n");
687 EXPORT_SYMBOL(iwl_clear_ucode_stations);
690 * iwl_restore_stations() - Restore driver known stations to device
692 * All stations considered active by driver, but not present in ucode, is
697 void iwl_restore_stations(struct iwl_priv *priv)
699 struct iwl_station_entry *station;
700 unsigned long flags_spin;
705 if (!iwl_is_ready(priv)) {
706 IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n");
710 IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
711 spin_lock_irqsave(&priv->sta_lock, flags_spin);
712 for (i = 0; i < priv->hw_params.max_stations; i++) {
713 if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
714 !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
715 IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
716 priv->stations[i].sta.sta.addr);
717 priv->stations[i].sta.mode = 0;
718 priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
723 for (i = 0; i < priv->hw_params.max_stations; i++) {
724 if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
725 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
726 station = &priv->stations[i];
727 ret = iwl_send_add_sta(priv, &priv->stations[i].sta, CMD_SYNC);
729 IWL_ERR(priv, "Adding station %pM failed.\n",
730 station->sta.sta.addr);
731 spin_lock_irqsave(&priv->sta_lock, flags_spin);
732 priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE;
733 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
734 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
737 * Rate scaling has already been initialized, send
741 iwl_send_lq_cmd(priv, station->lq, CMD_SYNC, true);
742 spin_lock_irqsave(&priv->sta_lock, flags_spin);
743 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
747 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
749 IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n");
751 IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n");
753 EXPORT_SYMBOL(iwl_restore_stations);
755 int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
759 for (i = 0; i < STA_KEY_MAX_NUM; i++)
760 if (!test_and_set_bit(i, &priv->ucode_key_table))
763 return WEP_INVALID_OFFSET;
765 EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
767 static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
769 int i, not_empty = 0;
770 u8 buff[sizeof(struct iwl_wep_cmd) +
771 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
772 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
773 size_t cmd_size = sizeof(struct iwl_wep_cmd);
774 struct iwl_host_cmd cmd = {
782 memset(wep_cmd, 0, cmd_size +
783 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
785 for (i = 0; i < WEP_KEYS_MAX ; i++) {
786 wep_cmd->key[i].key_index = i;
787 if (priv->wep_keys[i].key_size) {
788 wep_cmd->key[i].key_offset = i;
791 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
794 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
795 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
796 priv->wep_keys[i].key_size);
799 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
800 wep_cmd->num_keys = WEP_KEYS_MAX;
802 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
806 if (not_empty || send_if_empty)
807 return iwl_send_cmd(priv, &cmd);
812 int iwl_restore_default_wep_keys(struct iwl_priv *priv)
814 WARN_ON(!mutex_is_locked(&priv->mutex));
816 return iwl_send_static_wepkey_cmd(priv, 0);
818 EXPORT_SYMBOL(iwl_restore_default_wep_keys);
820 int iwl_remove_default_wep_key(struct iwl_priv *priv,
821 struct ieee80211_key_conf *keyconf)
825 WARN_ON(!mutex_is_locked(&priv->mutex));
827 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
830 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
831 if (iwl_is_rfkill(priv)) {
832 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
833 /* but keys in device are clear anyway so return success */
836 ret = iwl_send_static_wepkey_cmd(priv, 1);
837 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
838 keyconf->keyidx, ret);
842 EXPORT_SYMBOL(iwl_remove_default_wep_key);
844 int iwl_set_default_wep_key(struct iwl_priv *priv,
845 struct ieee80211_key_conf *keyconf)
849 WARN_ON(!mutex_is_locked(&priv->mutex));
851 if (keyconf->keylen != WEP_KEY_LEN_128 &&
852 keyconf->keylen != WEP_KEY_LEN_64) {
853 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
857 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
858 keyconf->hw_key_idx = HW_KEY_DEFAULT;
859 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
861 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
862 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
865 ret = iwl_send_static_wepkey_cmd(priv, 0);
866 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
867 keyconf->keylen, keyconf->keyidx, ret);
871 EXPORT_SYMBOL(iwl_set_default_wep_key);
873 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
874 struct ieee80211_key_conf *keyconf,
878 __le16 key_flags = 0;
881 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
883 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
884 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
885 key_flags &= ~STA_KEY_FLG_INVALID;
887 if (keyconf->keylen == WEP_KEY_LEN_128)
888 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
890 if (sta_id == priv->hw_params.bcast_sta_id)
891 key_flags |= STA_KEY_MULTICAST_MSK;
893 spin_lock_irqsave(&priv->sta_lock, flags);
895 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
896 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
897 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
899 memcpy(priv->stations[sta_id].keyinfo.key,
900 keyconf->key, keyconf->keylen);
902 memcpy(&priv->stations[sta_id].sta.key.key[3],
903 keyconf->key, keyconf->keylen);
905 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
906 == STA_KEY_FLG_NO_ENC)
907 priv->stations[sta_id].sta.key.key_offset =
908 iwl_get_free_ucode_key_index(priv);
909 /* else, we are overriding an existing key => no need to allocated room
912 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
913 "no space for a new key");
915 priv->stations[sta_id].sta.key.key_flags = key_flags;
916 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
917 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
919 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
921 spin_unlock_irqrestore(&priv->sta_lock, flags);
926 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
927 struct ieee80211_key_conf *keyconf,
931 __le16 key_flags = 0;
934 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
935 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
936 key_flags &= ~STA_KEY_FLG_INVALID;
938 if (sta_id == priv->hw_params.bcast_sta_id)
939 key_flags |= STA_KEY_MULTICAST_MSK;
941 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
943 spin_lock_irqsave(&priv->sta_lock, flags);
944 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
945 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
947 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
950 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
953 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
954 == STA_KEY_FLG_NO_ENC)
955 priv->stations[sta_id].sta.key.key_offset =
956 iwl_get_free_ucode_key_index(priv);
957 /* else, we are overriding an existing key => no need to allocated room
960 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
961 "no space for a new key");
963 priv->stations[sta_id].sta.key.key_flags = key_flags;
964 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
965 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
967 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
969 spin_unlock_irqrestore(&priv->sta_lock, flags);
974 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
975 struct ieee80211_key_conf *keyconf,
980 __le16 key_flags = 0;
982 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
983 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
984 key_flags &= ~STA_KEY_FLG_INVALID;
986 if (sta_id == priv->hw_params.bcast_sta_id)
987 key_flags |= STA_KEY_MULTICAST_MSK;
989 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
990 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
992 spin_lock_irqsave(&priv->sta_lock, flags);
994 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
995 priv->stations[sta_id].keyinfo.keylen = 16;
997 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
998 == STA_KEY_FLG_NO_ENC)
999 priv->stations[sta_id].sta.key.key_offset =
1000 iwl_get_free_ucode_key_index(priv);
1001 /* else, we are overriding an existing key => no need to allocated room
1004 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
1005 "no space for a new key");
1007 priv->stations[sta_id].sta.key.key_flags = key_flags;
1010 /* This copy is acutally not needed: we get the key with each TX */
1011 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
1013 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
1015 spin_unlock_irqrestore(&priv->sta_lock, flags);
1020 void iwl_update_tkip_key(struct iwl_priv *priv,
1021 struct ieee80211_key_conf *keyconf,
1022 const u8 *addr, u32 iv32, u16 *phase1key)
1024 u8 sta_id = IWL_INVALID_STATION;
1025 unsigned long flags;
1028 sta_id = iwl_find_station(priv, addr);
1029 if (sta_id == IWL_INVALID_STATION) {
1030 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
1035 if (iwl_scan_cancel(priv)) {
1036 /* cancel scan failed, just live w/ bad key and rely
1037 briefly on SW decryption */
1041 spin_lock_irqsave(&priv->sta_lock, flags);
1043 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
1045 for (i = 0; i < 5; i++)
1046 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
1047 cpu_to_le16(phase1key[i]);
1049 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1050 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1052 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1054 spin_unlock_irqrestore(&priv->sta_lock, flags);
1057 EXPORT_SYMBOL(iwl_update_tkip_key);
1059 int iwl_remove_dynamic_key(struct iwl_priv *priv,
1060 struct ieee80211_key_conf *keyconf,
1063 unsigned long flags;
1068 priv->key_mapping_key--;
1070 spin_lock_irqsave(&priv->sta_lock, flags);
1071 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
1072 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
1074 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
1075 keyconf->keyidx, sta_id);
1077 if (keyconf->keyidx != keyidx) {
1078 /* We need to remove a key with index different that the one
1079 * in the uCode. This means that the key we need to remove has
1080 * been replaced by another one with different index.
1081 * Don't do anything and return ok
1083 spin_unlock_irqrestore(&priv->sta_lock, flags);
1087 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
1088 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
1089 keyconf->keyidx, key_flags);
1090 spin_unlock_irqrestore(&priv->sta_lock, flags);
1094 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
1095 &priv->ucode_key_table))
1096 IWL_ERR(priv, "index %d not used in uCode key table.\n",
1097 priv->stations[sta_id].sta.key.key_offset);
1098 memset(&priv->stations[sta_id].keyinfo, 0,
1099 sizeof(struct iwl_hw_key));
1100 memset(&priv->stations[sta_id].sta.key, 0,
1101 sizeof(struct iwl4965_keyinfo));
1102 priv->stations[sta_id].sta.key.key_flags =
1103 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
1104 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
1105 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1106 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1108 if (iwl_is_rfkill(priv)) {
1109 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n");
1110 spin_unlock_irqrestore(&priv->sta_lock, flags);
1113 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1114 spin_unlock_irqrestore(&priv->sta_lock, flags);
1117 EXPORT_SYMBOL(iwl_remove_dynamic_key);
1119 int iwl_set_dynamic_key(struct iwl_priv *priv,
1120 struct ieee80211_key_conf *keyconf, u8 sta_id)
1124 priv->key_mapping_key++;
1125 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
1127 switch (keyconf->alg) {
1129 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
1132 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
1135 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
1139 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
1143 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
1144 keyconf->alg, keyconf->keylen, keyconf->keyidx,
1149 EXPORT_SYMBOL(iwl_set_dynamic_key);
1151 #ifdef CONFIG_IWLWIFI_DEBUG
1152 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
1153 struct iwl_link_quality_cmd *lq)
1156 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
1157 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
1158 lq->general_params.single_stream_ant_msk,
1159 lq->general_params.dual_stream_ant_msk);
1161 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
1162 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
1163 i, lq->rs_table[i].rate_n_flags);
1166 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
1167 struct iwl_link_quality_cmd *lq)
1173 * is_lq_table_valid() - Test one aspect of LQ cmd for validity
1175 * It sometimes happens when a HT rate has been in use and we
1176 * loose connectivity with AP then mac80211 will first tell us that the
1177 * current channel is not HT anymore before removing the station. In such a
1178 * scenario the RXON flags will be updated to indicate we are not
1179 * communicating HT anymore, but the LQ command may still contain HT rates.
1180 * Test for this to prevent driver from sending LQ command between the time
1181 * RXON flags are updated and when LQ command is updated.
1183 static bool is_lq_table_valid(struct iwl_priv *priv,
1184 struct iwl_link_quality_cmd *lq)
1187 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
1192 IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
1193 priv->active_rxon.channel);
1194 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
1195 if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) {
1196 IWL_DEBUG_INFO(priv,
1197 "index %d of LQ expects HT channel\n",
1206 * iwl_send_lq_cmd() - Send link quality command
1207 * @init: This command is sent as part of station initialization right
1208 * after station has been added.
1210 * The link quality command is sent as the last step of station creation.
1211 * This is the special case in which init is set and we call a callback in
1212 * this case to clear the state indicating that station creation is in
1215 int iwl_send_lq_cmd(struct iwl_priv *priv,
1216 struct iwl_link_quality_cmd *lq, u8 flags, bool init)
1219 unsigned long flags_spin;
1221 struct iwl_host_cmd cmd = {
1222 .id = REPLY_TX_LINK_QUALITY_CMD,
1223 .len = sizeof(struct iwl_link_quality_cmd),
1228 if (WARN_ON(lq->sta_id == IWL_INVALID_STATION))
1231 iwl_dump_lq_cmd(priv, lq);
1232 BUG_ON(init && (cmd.flags & CMD_ASYNC));
1234 if (is_lq_table_valid(priv, lq))
1235 ret = iwl_send_cmd(priv, &cmd);
1239 if (cmd.flags & CMD_ASYNC)
1243 IWL_DEBUG_INFO(priv, "init LQ command complete, clearing sta addition status for sta %d\n",
1245 spin_lock_irqsave(&priv->sta_lock, flags_spin);
1246 priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
1247 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
1251 EXPORT_SYMBOL(iwl_send_lq_cmd);
1254 * iwl_alloc_bcast_station - add broadcast station into driver's station table.
1256 * This adds the broadcast station into the driver's station table
1257 * and marks it driver active, so that it will be restored to the
1258 * device at the next best time.
1260 int iwl_alloc_bcast_station(struct iwl_priv *priv, bool init_lq)
1262 struct iwl_link_quality_cmd *link_cmd;
1263 unsigned long flags;
1266 spin_lock_irqsave(&priv->sta_lock, flags);
1267 sta_id = iwl_prep_station(priv, iwl_bcast_addr, false, NULL);
1268 if (sta_id == IWL_INVALID_STATION) {
1269 IWL_ERR(priv, "Unable to prepare broadcast station\n");
1270 spin_unlock_irqrestore(&priv->sta_lock, flags);
1275 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
1276 priv->stations[sta_id].used |= IWL_STA_BCAST;
1277 spin_unlock_irqrestore(&priv->sta_lock, flags);
1280 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
1283 "Unable to initialize rate scaling for bcast station.\n");
1287 spin_lock_irqsave(&priv->sta_lock, flags);
1288 priv->stations[sta_id].lq = link_cmd;
1289 spin_unlock_irqrestore(&priv->sta_lock, flags);
1294 EXPORT_SYMBOL_GPL(iwl_alloc_bcast_station);
1296 void iwl_dealloc_bcast_station(struct iwl_priv *priv)
1298 unsigned long flags;
1301 spin_lock_irqsave(&priv->sta_lock, flags);
1302 for (i = 0; i < priv->hw_params.max_stations; i++) {
1303 if (!(priv->stations[i].used & IWL_STA_BCAST))
1306 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
1307 priv->num_stations--;
1308 BUG_ON(priv->num_stations < 0);
1309 kfree(priv->stations[i].lq);
1310 priv->stations[i].lq = NULL;
1312 spin_unlock_irqrestore(&priv->sta_lock, flags);
1314 EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_station);
1317 * iwl_get_sta_id - Find station's index within station table
1319 * If new IBSS station, create new entry in station table
1321 int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1324 __le16 fc = hdr->frame_control;
1326 /* If this frame is broadcast or management, use broadcast station id */
1327 if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1))
1328 return priv->hw_params.bcast_sta_id;
1330 switch (priv->iw_mode) {
1332 /* If we are a client station in a BSS network, use the special
1333 * AP station entry (that's the only station we communicate with) */
1334 case NL80211_IFTYPE_STATION:
1336 * If addition of station not complete yet, which means
1337 * that rate scaling has not been initialized, then return
1338 * the broadcast station.
1340 if (!(priv->stations[IWL_AP_ID].used & IWL_STA_UCODE_ACTIVE))
1341 return priv->hw_params.bcast_sta_id;
1344 /* If we are an AP, then find the station, or use BCAST */
1345 case NL80211_IFTYPE_AP:
1346 sta_id = iwl_find_station(priv, hdr->addr1);
1347 if (sta_id != IWL_INVALID_STATION)
1349 return priv->hw_params.bcast_sta_id;
1351 /* If this frame is going out to an IBSS network, find the station,
1352 * or create a new station table entry */
1353 case NL80211_IFTYPE_ADHOC:
1354 sta_id = iwl_find_station(priv, hdr->addr1);
1355 if (sta_id != IWL_INVALID_STATION)
1358 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
1359 "Defaulting to broadcast...\n",
1361 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1362 return priv->hw_params.bcast_sta_id;
1365 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1367 return priv->hw_params.bcast_sta_id;
1370 EXPORT_SYMBOL(iwl_get_sta_id);
1373 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1375 void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1377 unsigned long flags;
1379 /* Remove "disable" flag, to enable Tx for this TID */
1380 spin_lock_irqsave(&priv->sta_lock, flags);
1381 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1382 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1383 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1384 spin_unlock_irqrestore(&priv->sta_lock, flags);
1386 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1388 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1390 int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1391 const u8 *addr, int tid, u16 ssn)
1393 unsigned long flags;
1396 sta_id = iwl_find_station(priv, addr);
1397 if (sta_id == IWL_INVALID_STATION)
1400 spin_lock_irqsave(&priv->sta_lock, flags);
1401 priv->stations[sta_id].sta.station_flags_msk = 0;
1402 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1403 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1404 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1405 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1406 spin_unlock_irqrestore(&priv->sta_lock, flags);
1408 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1411 EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1413 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1415 unsigned long flags;
1418 sta_id = iwl_find_station(priv, addr);
1419 if (sta_id == IWL_INVALID_STATION) {
1420 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1424 spin_lock_irqsave(&priv->sta_lock, flags);
1425 priv->stations[sta_id].sta.station_flags_msk = 0;
1426 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1427 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1428 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1429 spin_unlock_irqrestore(&priv->sta_lock, flags);
1431 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1434 EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1436 void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1438 unsigned long flags;
1440 spin_lock_irqsave(&priv->sta_lock, flags);
1441 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1442 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1443 priv->stations[sta_id].sta.sta.modify_mask = 0;
1444 priv->stations[sta_id].sta.sleep_tx_count = 0;
1445 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1446 spin_unlock_irqrestore(&priv->sta_lock, flags);
1448 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1450 EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
1452 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1454 unsigned long flags;
1456 spin_lock_irqsave(&priv->sta_lock, flags);
1457 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1458 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1459 priv->stations[sta_id].sta.sta.modify_mask =
1460 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1461 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1462 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1463 spin_unlock_irqrestore(&priv->sta_lock, flags);
1465 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1467 EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count);
1469 int iwl_mac_sta_remove(struct ieee80211_hw *hw,
1470 struct ieee80211_vif *vif,
1471 struct ieee80211_sta *sta)
1474 struct iwl_priv *priv = hw->priv;
1475 IWL_DEBUG_INFO(priv, "received request to remove station %pM\n",
1477 ret = iwl_remove_station(priv, sta->addr);
1479 IWL_ERR(priv, "Error removing station %pM\n",
1483 EXPORT_SYMBOL(iwl_mac_sta_remove);