1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 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>
35 #include "iwl-trans.h"
37 /* priv->shrd->sta_lock must be held */
38 static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
41 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
42 IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u "
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 "
49 "(according to driver)\n",
50 sta_id, priv->stations[sta_id].sta.sta.addr);
52 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
53 IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
54 sta_id, priv->stations[sta_id].sta.sta.addr);
58 static int iwl_process_add_sta_resp(struct iwl_priv *priv,
59 struct iwl_addsta_cmd *addsta,
60 struct iwl_rx_packet *pkt)
62 u8 sta_id = addsta->sta.sta_id;
66 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
67 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
72 IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
75 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
77 switch (pkt->u.add_sta.status) {
78 case ADD_STA_SUCCESS_MSK:
79 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
80 iwl_sta_ucode_activate(priv, sta_id);
83 case ADD_STA_NO_ROOM_IN_TABLE:
84 IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
87 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
88 IWL_ERR(priv, "Adding station %d failed, no block ack "
89 "resource.\n", sta_id);
91 case ADD_STA_MODIFY_NON_EXIST_STA:
92 IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
96 IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
97 pkt->u.add_sta.status);
101 IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
102 priv->stations[sta_id].sta.mode ==
103 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
104 sta_id, priv->stations[sta_id].sta.sta.addr);
107 * XXX: The MAC address in the command buffer is often changed from
108 * the original sent to the device. That is, the MAC address
109 * written to the command buffer often is not the same MAC address
110 * read from the command buffer when the command returns. This
111 * issue has not yet been resolved and this debugging is left to
112 * observe the problem.
114 IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
115 priv->stations[sta_id].sta.mode ==
116 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
118 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
123 int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb,
124 struct iwl_device_cmd *cmd)
126 struct iwl_rx_packet *pkt = rxb_addr(rxb);
127 struct iwl_addsta_cmd *addsta =
128 (struct iwl_addsta_cmd *) cmd->payload;
130 return iwl_process_add_sta_resp(priv, addsta, pkt);
133 static u16 iwlagn_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data)
135 u16 size = (u16)sizeof(struct iwl_addsta_cmd);
136 struct iwl_addsta_cmd *addsta = (struct iwl_addsta_cmd *)data;
137 memcpy(addsta, cmd, size);
138 /* resrved in 5000 */
139 addsta->rate_n_flags = cpu_to_le16(0);
143 int iwl_send_add_sta(struct iwl_priv *priv,
144 struct iwl_addsta_cmd *sta, u8 flags)
147 u8 data[sizeof(*sta)];
148 struct iwl_host_cmd cmd = {
153 u8 sta_id __maybe_unused = sta->sta.sta_id;
155 IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
156 sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
158 if (!(flags & CMD_ASYNC)) {
159 cmd.flags |= CMD_WANT_SKB;
163 cmd.len[0] = iwlagn_build_addsta_hcmd(sta, data);
164 ret = iwl_trans_send_cmd(trans(priv), &cmd);
166 if (ret || (flags & CMD_ASYNC))
168 /*else the command was successfully sent in SYNC mode, need to free
171 iwl_free_pages(priv->shrd, cmd.reply_page);
173 if (cmd.handler_status)
174 IWL_ERR(priv, "%s - error in the CMD response %d", __func__,
177 return cmd.handler_status;
180 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
181 struct ieee80211_sta *sta,
182 struct iwl_rxon_context *ctx)
184 struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
188 if (!sta || !sta_ht_inf->ht_supported)
191 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
192 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
193 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
195 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
196 "dynamic" : "disabled");
198 sta_flags = priv->stations[index].sta.station_flags;
200 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
202 switch (mimo_ps_mode) {
203 case WLAN_HT_CAP_SM_PS_STATIC:
204 sta_flags |= STA_FLG_MIMO_DIS_MSK;
206 case WLAN_HT_CAP_SM_PS_DYNAMIC:
207 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
209 case WLAN_HT_CAP_SM_PS_DISABLED:
212 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
216 sta_flags |= cpu_to_le32(
217 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
219 sta_flags |= cpu_to_le32(
220 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
222 if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap))
223 sta_flags |= STA_FLG_HT40_EN_MSK;
225 sta_flags &= ~STA_FLG_HT40_EN_MSK;
227 priv->stations[index].sta.station_flags = sta_flags;
233 * iwl_prep_station - Prepare station information for addition
235 * should be called with sta_lock held
237 u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
238 const u8 *addr, bool is_ap, struct ieee80211_sta *sta)
240 struct iwl_station_entry *station;
242 u8 sta_id = IWL_INVALID_STATION;
245 sta_id = ctx->ap_sta_id;
246 else if (is_broadcast_ether_addr(addr))
247 sta_id = ctx->bcast_sta_id;
249 for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) {
250 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
256 if (!priv->stations[i].used &&
257 sta_id == IWL_INVALID_STATION)
262 * These two conditions have the same outcome, but keep them
265 if (unlikely(sta_id == IWL_INVALID_STATION))
269 * uCode is not able to deal with multiple requests to add a
270 * station. Keep track if one is in progress so that we do not send
273 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
274 IWL_DEBUG_INFO(priv, "STA %d already in process of being "
279 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
280 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
281 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
282 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
283 "adding again.\n", sta_id, addr);
287 station = &priv->stations[sta_id];
288 station->used = IWL_STA_DRIVER_ACTIVE;
289 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
291 priv->num_stations++;
293 /* Set up the REPLY_ADD_STA command to send to device */
294 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
295 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
296 station->sta.mode = 0;
297 station->sta.sta.sta_id = sta_id;
298 station->sta.station_flags = ctx->station_flags;
299 station->ctxid = ctx->ctxid;
302 struct iwl_station_priv *sta_priv;
304 sta_priv = (void *)sta->drv_priv;
309 * OK to call unconditionally, since local stations (IBSS BSSID
310 * STA and broadcast STA) pass in a NULL sta, and mac80211
311 * doesn't allow HT IBSS.
313 iwl_set_ht_add_station(priv, sta_id, sta, ctx);
319 #define STA_WAIT_TIMEOUT (HZ/2)
322 * iwl_add_station_common -
324 int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
325 const u8 *addr, bool is_ap,
326 struct ieee80211_sta *sta, u8 *sta_id_r)
328 unsigned long flags_spin;
331 struct iwl_addsta_cmd sta_cmd;
334 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
335 sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta);
336 if (sta_id == IWL_INVALID_STATION) {
337 IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
339 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
344 * uCode is not able to deal with multiple requests to add a
345 * station. Keep track if one is in progress so that we do not send
348 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
349 IWL_DEBUG_INFO(priv, "STA %d already in process of being "
351 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
355 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
356 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
357 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not "
358 "adding again.\n", sta_id, addr);
359 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
363 priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
364 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
365 sizeof(struct iwl_addsta_cmd));
366 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
368 /* Add station to device's station table */
369 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
371 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
372 IWL_ERR(priv, "Adding station %pM failed.\n",
373 priv->stations[sta_id].sta.sta.addr);
374 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
375 priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
376 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
383 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
385 * priv->shrd->sta_lock must be held
387 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
389 /* Ucode must be active and driver must be non active */
390 if ((priv->stations[sta_id].used &
391 (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) !=
392 IWL_STA_UCODE_ACTIVE)
393 IWL_ERR(priv, "removed non active STA %u\n", sta_id);
395 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
397 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
398 IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
401 static int iwl_send_remove_station(struct iwl_priv *priv,
402 const u8 *addr, int sta_id,
405 struct iwl_rx_packet *pkt;
408 unsigned long flags_spin;
409 struct iwl_rem_sta_cmd rm_sta_cmd;
411 struct iwl_host_cmd cmd = {
412 .id = REPLY_REMOVE_STA,
413 .len = { sizeof(struct iwl_rem_sta_cmd), },
415 .data = { &rm_sta_cmd, },
418 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
419 rm_sta_cmd.num_sta = 1;
420 memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
422 cmd.flags |= CMD_WANT_SKB;
424 ret = iwl_trans_send_cmd(trans(priv), &cmd);
429 pkt = (struct iwl_rx_packet *)cmd.reply_page;
430 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
431 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
437 switch (pkt->u.rem_sta.status) {
438 case REM_STA_SUCCESS_MSK:
440 spin_lock_irqsave(&priv->shrd->sta_lock,
442 iwl_sta_ucode_deactivate(priv, sta_id);
443 spin_unlock_irqrestore(&priv->shrd->sta_lock,
446 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
450 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
454 iwl_free_pages(priv->shrd, cmd.reply_page);
460 * iwl_remove_station - Remove driver's knowledge of station.
462 int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
467 if (!iwl_is_ready(priv->shrd)) {
469 "Unable to remove station %pM, device not ready.\n",
472 * It is typical for stations to be removed when we are
473 * going down. Return success since device will be down
479 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
482 if (WARN_ON(sta_id == IWL_INVALID_STATION))
485 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
487 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
488 IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
493 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
494 IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
499 if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
500 kfree(priv->stations[sta_id].lq);
501 priv->stations[sta_id].lq = NULL;
504 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
506 priv->num_stations--;
508 if (WARN_ON(priv->num_stations < 0))
509 priv->num_stations = 0;
511 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
513 return iwl_send_remove_station(priv, addr, sta_id, false);
515 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
520 * iwl_clear_ucode_stations - clear ucode station table bits
522 * This function clears all the bits in the driver indicating
523 * which stations are active in the ucode. Call when something
524 * other than explicit station management would cause this in
525 * the ucode, e.g. unassociated RXON.
527 void iwl_clear_ucode_stations(struct iwl_priv *priv,
528 struct iwl_rxon_context *ctx)
531 unsigned long flags_spin;
532 bool cleared = false;
534 IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
536 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
537 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
538 if (ctx && ctx->ctxid != priv->stations[i].ctxid)
541 if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
543 "Clearing ucode active for station %d\n", i);
544 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
548 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
552 "No active stations found to be cleared\n");
556 * iwl_restore_stations() - Restore driver known stations to device
558 * All stations considered active by driver, but not present in ucode, is
563 void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
565 struct iwl_addsta_cmd sta_cmd;
566 struct iwl_link_quality_cmd lq;
567 unsigned long flags_spin;
573 if (!iwl_is_ready(priv->shrd)) {
575 "Not ready yet, not restoring any stations.\n");
579 IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
580 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
581 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
582 if (ctx->ctxid != priv->stations[i].ctxid)
584 if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
585 !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
586 IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
587 priv->stations[i].sta.sta.addr);
588 priv->stations[i].sta.mode = 0;
589 priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
594 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
595 if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
596 memcpy(&sta_cmd, &priv->stations[i].sta,
597 sizeof(struct iwl_addsta_cmd));
599 if (priv->stations[i].lq) {
600 if (priv->shrd->wowlan)
601 iwl_sta_fill_lq(priv, ctx, i, &lq);
603 memcpy(&lq, priv->stations[i].lq,
604 sizeof(struct iwl_link_quality_cmd));
607 spin_unlock_irqrestore(&priv->shrd->sta_lock,
609 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
611 spin_lock_irqsave(&priv->shrd->sta_lock,
613 IWL_ERR(priv, "Adding station %pM failed.\n",
614 priv->stations[i].sta.sta.addr);
615 priv->stations[i].used &=
616 ~IWL_STA_DRIVER_ACTIVE;
617 priv->stations[i].used &=
618 ~IWL_STA_UCODE_INPROGRESS;
619 spin_unlock_irqrestore(&priv->shrd->sta_lock,
623 * Rate scaling has already been initialized, send
627 iwl_send_lq_cmd(priv, ctx, &lq,
629 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
630 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
634 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
636 IWL_DEBUG_INFO(priv, "Restoring all known stations .... "
637 "no stations to be restored.\n");
639 IWL_DEBUG_INFO(priv, "Restoring all known stations .... "
643 void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
646 int sta_id = ctx->ap_sta_id;
648 struct iwl_addsta_cmd sta_cmd;
649 struct iwl_link_quality_cmd lq;
652 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
653 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
654 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
658 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
660 memcpy(&lq, priv->stations[sta_id].lq, sizeof(lq));
662 active = priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE;
663 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
664 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
667 ret = iwl_send_remove_station(
668 priv, priv->stations[sta_id].sta.sta.addr,
671 IWL_ERR(priv, "failed to remove STA %pM (%d)\n",
672 priv->stations[sta_id].sta.sta.addr, ret);
674 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
675 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
676 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
678 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
680 IWL_ERR(priv, "failed to re-add STA %pM (%d)\n",
681 priv->stations[sta_id].sta.sta.addr, ret);
682 iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true);
685 int iwl_get_free_ucode_key_offset(struct iwl_priv *priv)
689 for (i = 0; i < priv->sta_key_max_num; i++)
690 if (!test_and_set_bit(i, &priv->ucode_key_table))
693 return WEP_INVALID_OFFSET;
696 void iwl_dealloc_bcast_stations(struct iwl_priv *priv)
701 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
702 for (i = 0; i < IWLAGN_STATION_COUNT; i++) {
703 if (!(priv->stations[i].used & IWL_STA_BCAST))
706 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
707 priv->num_stations--;
708 if (WARN_ON(priv->num_stations < 0))
709 priv->num_stations = 0;
710 kfree(priv->stations[i].lq);
711 priv->stations[i].lq = NULL;
713 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
716 #ifdef CONFIG_IWLWIFI_DEBUG
717 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
718 struct iwl_link_quality_cmd *lq)
721 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
722 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
723 lq->general_params.single_stream_ant_msk,
724 lq->general_params.dual_stream_ant_msk);
726 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
727 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
728 i, lq->rs_table[i].rate_n_flags);
731 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
732 struct iwl_link_quality_cmd *lq)
738 * is_lq_table_valid() - Test one aspect of LQ cmd for validity
740 * It sometimes happens when a HT rate has been in use and we
741 * loose connectivity with AP then mac80211 will first tell us that the
742 * current channel is not HT anymore before removing the station. In such a
743 * scenario the RXON flags will be updated to indicate we are not
744 * communicating HT anymore, but the LQ command may still contain HT rates.
745 * Test for this to prevent driver from sending LQ command between the time
746 * RXON flags are updated and when LQ command is updated.
748 static bool is_lq_table_valid(struct iwl_priv *priv,
749 struct iwl_rxon_context *ctx,
750 struct iwl_link_quality_cmd *lq)
757 IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
758 ctx->active.channel);
759 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
760 if (le32_to_cpu(lq->rs_table[i].rate_n_flags) &
763 "index %d of LQ expects HT channel\n",
772 * iwl_send_lq_cmd() - Send link quality command
773 * @init: This command is sent as part of station initialization right
774 * after station has been added.
776 * The link quality command is sent as the last step of station creation.
777 * This is the special case in which init is set and we call a callback in
778 * this case to clear the state indicating that station creation is in
781 int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
782 struct iwl_link_quality_cmd *lq, u8 flags, bool init)
785 unsigned long flags_spin;
787 struct iwl_host_cmd cmd = {
788 .id = REPLY_TX_LINK_QUALITY_CMD,
789 .len = { sizeof(struct iwl_link_quality_cmd), },
794 if (WARN_ON(lq->sta_id == IWL_INVALID_STATION))
798 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
799 if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
800 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
803 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
805 iwl_dump_lq_cmd(priv, lq);
806 if (WARN_ON(init && (cmd.flags & CMD_ASYNC)))
809 if (is_lq_table_valid(priv, ctx, lq))
810 ret = iwl_trans_send_cmd(trans(priv), &cmd);
814 if (cmd.flags & CMD_ASYNC)
818 IWL_DEBUG_INFO(priv, "init LQ command complete, "
819 "clearing sta addition status for sta %d\n",
821 spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin);
822 priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
823 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin);
828 int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
829 struct ieee80211_vif *vif,
830 struct ieee80211_sta *sta)
832 struct iwl_priv *priv = hw->priv;
833 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
836 IWL_DEBUG_MAC80211(priv, "enter: received request to remove "
837 "station %pM\n", sta->addr);
838 mutex_lock(&priv->shrd->mutex);
839 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n",
841 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
843 IWL_DEBUG_QUIET_RFKILL(priv, "Error removing station %pM\n",
845 mutex_unlock(&priv->shrd->mutex);
846 IWL_DEBUG_MAC80211(priv, "leave\n");
851 void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
852 u8 sta_id, struct iwl_link_quality_cmd *link_cmd)
858 lockdep_assert_held(&priv->shrd->mutex);
860 memset(link_cmd, 0, sizeof(*link_cmd));
862 /* Set up the rate scaling to start at selected rate, fall back
863 * all the way down to 1M in IEEE order, and then spin on 1M */
864 if (priv->band == IEEE80211_BAND_5GHZ)
865 r = IWL_RATE_6M_INDEX;
866 else if (ctx && ctx->vif && ctx->vif->p2p)
867 r = IWL_RATE_6M_INDEX;
869 r = IWL_RATE_1M_INDEX;
871 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
872 rate_flags |= RATE_MCS_CCK_MSK;
874 rate_flags |= first_antenna(hw_params(priv).valid_tx_ant) <<
876 rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
877 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
878 link_cmd->rs_table[i].rate_n_flags = rate_n_flags;
880 link_cmd->general_params.single_stream_ant_msk =
881 first_antenna(hw_params(priv).valid_tx_ant);
883 link_cmd->general_params.dual_stream_ant_msk =
884 hw_params(priv).valid_tx_ant &
885 ~first_antenna(hw_params(priv).valid_tx_ant);
886 if (!link_cmd->general_params.dual_stream_ant_msk) {
887 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
888 } else if (num_of_ant(hw_params(priv).valid_tx_ant) == 2) {
889 link_cmd->general_params.dual_stream_ant_msk =
890 hw_params(priv).valid_tx_ant;
893 link_cmd->agg_params.agg_dis_start_th =
894 LINK_QUAL_AGG_DISABLE_START_DEF;
895 link_cmd->agg_params.agg_time_limit =
896 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
898 link_cmd->sta_id = sta_id;
901 static struct iwl_link_quality_cmd *
902 iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
905 struct iwl_link_quality_cmd *link_cmd;
907 link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
909 IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
913 iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd);
919 * iwlagn_add_bssid_station - Add the special IBSS BSSID station
923 int iwlagn_add_bssid_station(struct iwl_priv *priv,
924 struct iwl_rxon_context *ctx,
925 const u8 *addr, u8 *sta_id_r)
929 struct iwl_link_quality_cmd *link_cmd;
933 *sta_id_r = IWL_INVALID_STATION;
935 ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
937 IWL_ERR(priv, "Unable to add station %pM\n", addr);
944 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
945 priv->stations[sta_id].used |= IWL_STA_LOCAL;
946 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
948 /* Set up default rate scaling table in device's station table */
949 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
952 "Unable to initialize rate scaling for station %pM.\n",
957 ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true);
959 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
961 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
962 priv->stations[sta_id].lq = link_cmd;
963 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
971 * For each context, the device has a table of 4 static WEP keys
972 * (one for each key index) that is updated with the following
976 static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv,
977 struct iwl_rxon_context *ctx,
980 int i, not_empty = 0;
981 u8 buff[sizeof(struct iwl_wep_cmd) +
982 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
983 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
984 size_t cmd_size = sizeof(struct iwl_wep_cmd);
985 struct iwl_host_cmd cmd = {
986 .id = ctx->wep_key_cmd,
987 .data = { wep_cmd, },
993 memset(wep_cmd, 0, cmd_size +
994 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
996 for (i = 0; i < WEP_KEYS_MAX ; i++) {
997 wep_cmd->key[i].key_index = i;
998 if (ctx->wep_keys[i].key_size) {
999 wep_cmd->key[i].key_offset = i;
1002 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
1005 wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size;
1006 memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key,
1007 ctx->wep_keys[i].key_size);
1010 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
1011 wep_cmd->num_keys = WEP_KEYS_MAX;
1013 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
1015 cmd.len[0] = cmd_size;
1017 if (not_empty || send_if_empty)
1018 return iwl_trans_send_cmd(trans(priv), &cmd);
1023 int iwl_restore_default_wep_keys(struct iwl_priv *priv,
1024 struct iwl_rxon_context *ctx)
1026 lockdep_assert_held(&priv->shrd->mutex);
1028 return iwl_send_static_wepkey_cmd(priv, ctx, false);
1031 int iwl_remove_default_wep_key(struct iwl_priv *priv,
1032 struct iwl_rxon_context *ctx,
1033 struct ieee80211_key_conf *keyconf)
1037 lockdep_assert_held(&priv->shrd->mutex);
1039 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
1042 memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0]));
1043 if (iwl_is_rfkill(priv->shrd)) {
1045 "Not sending REPLY_WEPKEY command due to RFKILL.\n");
1046 /* but keys in device are clear anyway so return success */
1049 ret = iwl_send_static_wepkey_cmd(priv, ctx, 1);
1050 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
1051 keyconf->keyidx, ret);
1056 int iwl_set_default_wep_key(struct iwl_priv *priv,
1057 struct iwl_rxon_context *ctx,
1058 struct ieee80211_key_conf *keyconf)
1062 lockdep_assert_held(&priv->shrd->mutex);
1064 if (keyconf->keylen != WEP_KEY_LEN_128 &&
1065 keyconf->keylen != WEP_KEY_LEN_64) {
1067 "Bad WEP key length %d\n", keyconf->keylen);
1071 keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT;
1073 ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
1074 memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key,
1077 ret = iwl_send_static_wepkey_cmd(priv, ctx, false);
1078 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
1079 keyconf->keylen, keyconf->keyidx, ret);
1085 * dynamic (per-station) keys
1087 * The dynamic keys are a little more complicated. The device has
1088 * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys.
1089 * These are linked to stations by a table that contains an index
1090 * into the key table for each station/key index/{mcast,unicast},
1091 * i.e. it's basically an array of pointers like this:
1092 * key_offset_t key_mapping[NUM_STATIONS][4][2];
1093 * (it really works differently, but you can think of it as such)
1095 * The key uploading and linking happens in the same command, the
1096 * add station command with STA_MODIFY_KEY_MASK.
1099 static u8 iwlagn_key_sta_id(struct iwl_priv *priv,
1100 struct ieee80211_vif *vif,
1101 struct ieee80211_sta *sta)
1103 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1104 u8 sta_id = IWL_INVALID_STATION;
1107 sta_id = iwl_sta_id(sta);
1110 * The device expects GTKs for station interfaces to be
1111 * installed as GTKs for the AP station. If we have no
1112 * station ID, then use the ap_sta_id in that case.
1114 if (!sta && vif && vif_priv->ctx) {
1115 switch (vif->type) {
1116 case NL80211_IFTYPE_STATION:
1117 sta_id = vif_priv->ctx->ap_sta_id;
1121 * In all other cases, the key will be
1122 * used either for TX only or is bound
1123 * to a station already.
1132 static int iwlagn_send_sta_key(struct iwl_priv *priv,
1133 struct ieee80211_key_conf *keyconf,
1134 u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k,
1137 unsigned long flags;
1139 struct iwl_addsta_cmd sta_cmd;
1142 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1143 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
1144 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1146 key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
1147 key_flags |= STA_KEY_FLG_MAP_KEY_MSK;
1149 switch (keyconf->cipher) {
1150 case WLAN_CIPHER_SUITE_CCMP:
1151 key_flags |= STA_KEY_FLG_CCMP;
1152 memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen);
1154 case WLAN_CIPHER_SUITE_TKIP:
1155 key_flags |= STA_KEY_FLG_TKIP;
1156 sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32;
1157 for (i = 0; i < 5; i++)
1158 sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]);
1159 memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen);
1161 case WLAN_CIPHER_SUITE_WEP104:
1162 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
1164 case WLAN_CIPHER_SUITE_WEP40:
1165 key_flags |= STA_KEY_FLG_WEP;
1166 memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen);
1173 if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
1174 key_flags |= STA_KEY_MULTICAST_MSK;
1176 /* key pointer (offset) */
1177 sta_cmd.key.key_offset = keyconf->hw_key_idx;
1179 sta_cmd.key.key_flags = key_flags;
1180 sta_cmd.mode = STA_CONTROL_MODIFY_MSK;
1181 sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
1183 return iwl_send_add_sta(priv, &sta_cmd, cmd_flags);
1186 void iwl_update_tkip_key(struct iwl_priv *priv,
1187 struct ieee80211_vif *vif,
1188 struct ieee80211_key_conf *keyconf,
1189 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
1191 u8 sta_id = iwlagn_key_sta_id(priv, vif, sta);
1193 if (sta_id == IWL_INVALID_STATION)
1196 if (iwl_scan_cancel(priv)) {
1197 /* cancel scan failed, just live w/ bad key and rely
1198 briefly on SW decryption */
1202 iwlagn_send_sta_key(priv, keyconf, sta_id,
1203 iv32, phase1key, CMD_ASYNC);
1206 int iwl_remove_dynamic_key(struct iwl_priv *priv,
1207 struct iwl_rxon_context *ctx,
1208 struct ieee80211_key_conf *keyconf,
1209 struct ieee80211_sta *sta)
1211 unsigned long flags;
1212 struct iwl_addsta_cmd sta_cmd;
1213 u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
1215 /* if station isn't there, neither is the key */
1216 if (sta_id == IWL_INVALID_STATION)
1219 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1220 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd));
1221 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE))
1222 sta_id = IWL_INVALID_STATION;
1223 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1225 if (sta_id == IWL_INVALID_STATION)
1228 lockdep_assert_held(&priv->shrd->mutex);
1230 ctx->key_mapping_keys--;
1232 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
1233 keyconf->keyidx, sta_id);
1235 if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table))
1236 IWL_ERR(priv, "offset %d not used in uCode key table.\n",
1237 keyconf->hw_key_idx);
1239 sta_cmd.key.key_flags = STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
1240 sta_cmd.key.key_offset = WEP_INVALID_OFFSET;
1241 sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK;
1242 sta_cmd.mode = STA_CONTROL_MODIFY_MSK;
1244 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1247 int iwl_set_dynamic_key(struct iwl_priv *priv,
1248 struct iwl_rxon_context *ctx,
1249 struct ieee80211_key_conf *keyconf,
1250 struct ieee80211_sta *sta)
1252 struct ieee80211_key_seq seq;
1255 u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta);
1258 if (sta_id == IWL_INVALID_STATION)
1261 lockdep_assert_held(&priv->shrd->mutex);
1263 keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv);
1264 if (keyconf->hw_key_idx == WEP_INVALID_OFFSET)
1267 ctx->key_mapping_keys++;
1269 switch (keyconf->cipher) {
1270 case WLAN_CIPHER_SUITE_TKIP:
1271 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1272 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1276 else /* station mode case only */
1277 addr = ctx->active.bssid_addr;
1279 /* pre-fill phase 1 key into device cache */
1280 ieee80211_get_key_rx_seq(keyconf, 0, &seq);
1281 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);
1282 ret = iwlagn_send_sta_key(priv, keyconf, sta_id,
1283 seq.tkip.iv32, p1k, CMD_SYNC);
1285 case WLAN_CIPHER_SUITE_CCMP:
1286 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1288 case WLAN_CIPHER_SUITE_WEP40:
1289 case WLAN_CIPHER_SUITE_WEP104:
1290 ret = iwlagn_send_sta_key(priv, keyconf, sta_id,
1294 IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher);
1299 ctx->key_mapping_keys--;
1300 clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table);
1303 IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1304 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
1305 sta ? sta->addr : NULL, ret);
1311 * iwlagn_alloc_bcast_station - add broadcast station into driver's station table.
1313 * This adds the broadcast station into the driver's station table
1314 * and marks it driver active, so that it will be restored to the
1315 * device at the next best time.
1317 int iwlagn_alloc_bcast_station(struct iwl_priv *priv,
1318 struct iwl_rxon_context *ctx)
1320 struct iwl_link_quality_cmd *link_cmd;
1321 unsigned long flags;
1324 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1325 sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL);
1326 if (sta_id == IWL_INVALID_STATION) {
1327 IWL_ERR(priv, "Unable to prepare broadcast station\n");
1328 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1333 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
1334 priv->stations[sta_id].used |= IWL_STA_BCAST;
1335 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1337 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
1340 "Unable to initialize rate scaling for bcast station.\n");
1344 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1345 priv->stations[sta_id].lq = link_cmd;
1346 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1352 * iwl_update_bcast_station - update broadcast station's LQ command
1354 * Only used by iwlagn. Placed here to have all bcast station management
1357 int iwl_update_bcast_station(struct iwl_priv *priv,
1358 struct iwl_rxon_context *ctx)
1360 unsigned long flags;
1361 struct iwl_link_quality_cmd *link_cmd;
1362 u8 sta_id = ctx->bcast_sta_id;
1364 link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id);
1366 IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n");
1370 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1371 if (priv->stations[sta_id].lq)
1372 kfree(priv->stations[sta_id].lq);
1374 IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n");
1375 priv->stations[sta_id].lq = link_cmd;
1376 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1381 int iwl_update_bcast_stations(struct iwl_priv *priv)
1383 struct iwl_rxon_context *ctx;
1386 for_each_context(priv, ctx) {
1387 ret = iwl_update_bcast_station(priv, ctx);
1396 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1398 int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1400 unsigned long flags;
1401 struct iwl_addsta_cmd sta_cmd;
1403 lockdep_assert_held(&priv->shrd->mutex);
1405 /* Remove "disable" flag, to enable Tx for this TID */
1406 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1407 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1408 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1409 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1410 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1411 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1413 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1416 int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
1419 unsigned long flags;
1421 struct iwl_addsta_cmd sta_cmd;
1423 lockdep_assert_held(&priv->shrd->mutex);
1425 sta_id = iwl_sta_id(sta);
1426 if (sta_id == IWL_INVALID_STATION)
1429 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1430 priv->stations[sta_id].sta.station_flags_msk = 0;
1431 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1432 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1433 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1434 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1435 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1436 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1438 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1441 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
1444 unsigned long flags;
1446 struct iwl_addsta_cmd sta_cmd;
1448 lockdep_assert_held(&priv->shrd->mutex);
1450 sta_id = iwl_sta_id(sta);
1451 if (sta_id == IWL_INVALID_STATION) {
1452 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1456 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1457 priv->stations[sta_id].sta.station_flags_msk = 0;
1458 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1459 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1460 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1461 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
1462 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1464 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
1467 static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1469 unsigned long flags;
1471 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1472 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1473 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1474 priv->stations[sta_id].sta.sta.modify_mask = 0;
1475 priv->stations[sta_id].sta.sleep_tx_count = 0;
1476 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1477 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1478 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1482 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1484 unsigned long flags;
1486 spin_lock_irqsave(&priv->shrd->sta_lock, flags);
1487 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1488 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1489 priv->stations[sta_id].sta.sta.modify_mask =
1490 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1491 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1492 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1493 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1494 spin_unlock_irqrestore(&priv->shrd->sta_lock, flags);
1498 void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
1499 struct ieee80211_vif *vif,
1500 enum sta_notify_cmd cmd,
1501 struct ieee80211_sta *sta)
1503 struct iwl_priv *priv = hw->priv;
1504 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1507 IWL_DEBUG_MAC80211(priv, "enter\n");
1510 case STA_NOTIFY_SLEEP:
1511 WARN_ON(!sta_priv->client);
1512 sta_priv->asleep = true;
1513 if (atomic_read(&sta_priv->pending_frames) > 0)
1514 ieee80211_sta_block_awake(hw, sta, true);
1516 case STA_NOTIFY_AWAKE:
1517 WARN_ON(!sta_priv->client);
1518 if (!sta_priv->asleep)
1520 sta_priv->asleep = false;
1521 sta_id = iwl_sta_id(sta);
1522 if (sta_id != IWL_INVALID_STATION)
1523 iwl_sta_modify_ps_wake(priv, sta_id);
1528 IWL_DEBUG_MAC80211(priv, "leave\n");