blob: 44ab03a12e40e353014fe56e67e0fd18f815585d [file] [log] [blame]
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07001/******************************************************************************
2 *
Reinette Chatre01f81622009-01-08 10:20:02 -08003 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07004 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
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.
11 *
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
15 * more details.
16 *
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
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
Winkler, Tomas759ef892008-12-09 11:28:58 -080025 * Intel Linux Wireless <ilw@linux.intel.com>
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070026 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30#include <net/mac80211.h>
Tomas Winkler947b13a2008-04-16 16:34:48 -070031#include <linux/etherdevice.h>
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070032
Tomas Winkler3e0d4cb2008-04-24 11:55:38 -070033#include "iwl-dev.h"
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070034#include "iwl-core.h"
35#include "iwl-sta.h"
Tomas Winkler7a999bf2008-05-29 16:35:02 +080036
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080037#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
38#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
Tomas Winkler7a999bf2008-05-29 16:35:02 +080039
Tomas Winkler947b13a2008-04-16 16:34:48 -070040u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
41{
42 int i;
43 int start = 0;
44 int ret = IWL_INVALID_STATION;
45 unsigned long flags;
Tomas Winkler947b13a2008-04-16 16:34:48 -070046
Johannes Berg05c914f2008-09-11 00:01:58 +020047 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
48 (priv->iw_mode == NL80211_IFTYPE_AP))
Tomas Winkler947b13a2008-04-16 16:34:48 -070049 start = IWL_STA_ID;
50
51 if (is_broadcast_ether_addr(addr))
52 return priv->hw_params.bcast_sta_id;
53
54 spin_lock_irqsave(&priv->sta_lock, flags);
55 for (i = start; i < priv->hw_params.max_stations; i++)
56 if (priv->stations[i].used &&
57 (!compare_ether_addr(priv->stations[i].sta.sta.addr,
58 addr))) {
59 ret = i;
60 goto out;
61 }
62
Tomas Winklere1623442009-01-27 14:27:56 -080063 IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n",
Johannes Berge1749612008-10-27 15:59:26 -070064 addr, priv->num_stations);
Tomas Winkler947b13a2008-04-16 16:34:48 -070065
66 out:
67 spin_unlock_irqrestore(&priv->sta_lock, flags);
68 return ret;
69}
70EXPORT_SYMBOL(iwl_find_station);
71
Emmanuel Grumbachbe1f3ab62008-06-12 09:47:18 +080072int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
73{
Johannes Berg05c914f2008-09-11 00:01:58 +020074 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
Emmanuel Grumbachbe1f3ab62008-06-12 09:47:18 +080075 return IWL_AP_ID;
76 } else {
77 u8 *da = ieee80211_get_DA(hdr);
78 return iwl_find_station(priv, da);
79 }
80}
81EXPORT_SYMBOL(iwl_get_ra_sta_id);
82
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080083static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
84{
85 unsigned long flags;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080086
87 spin_lock_irqsave(&priv->sta_lock, flags);
88
Samuel Ortiz17f841c2009-01-23 13:45:20 -080089 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
90 !(priv->stations_39[sta_id].used & IWL_STA_DRIVER_ACTIVE))
Winkler, Tomas15b16872008-12-19 10:37:33 +080091 IWL_ERR(priv, "ACTIVATE a non DRIVER active station %d\n",
92 sta_id);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080093
94 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
Tomas Winklere1623442009-01-27 14:27:56 -080095 IWL_DEBUG_ASSOC(priv, "Added STA to Ucode: %pM\n",
Johannes Berge1749612008-10-27 15:59:26 -070096 priv->stations[sta_id].sta.sta.addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080097
98 spin_unlock_irqrestore(&priv->sta_lock, flags);
99}
100
Tomas Winkler42132bc2008-05-29 16:35:03 +0800101static int iwl_add_sta_callback(struct iwl_priv *priv,
102 struct iwl_cmd *cmd, struct sk_buff *skb)
103{
104 struct iwl_rx_packet *res = NULL;
Tomas Winkler3257e5d2008-10-14 12:32:43 -0700105 struct iwl_addsta_cmd *addsta =
106 (struct iwl_addsta_cmd *)cmd->cmd.payload;
107 u8 sta_id = addsta->sta.sta_id;
Tomas Winkler42132bc2008-05-29 16:35:03 +0800108
109 if (!skb) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800110 IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
Tomas Winkler42132bc2008-05-29 16:35:03 +0800111 return 1;
112 }
113
114 res = (struct iwl_rx_packet *)skb->data;
115 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800116 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
Tomas Winkler42132bc2008-05-29 16:35:03 +0800117 res->hdr.flags);
118 return 1;
119 }
120
121 switch (res->u.add_sta.status) {
122 case ADD_STA_SUCCESS_MSK:
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800123 iwl_sta_ucode_activate(priv, sta_id);
124 /* fall through */
Tomas Winkler42132bc2008-05-29 16:35:03 +0800125 default:
Tomas Winklere1623442009-01-27 14:27:56 -0800126 IWL_DEBUG_HC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
Tomas Winkler42132bc2008-05-29 16:35:03 +0800127 res->u.add_sta.status);
128 break;
129 }
130
131 /* We didn't cache the SKB; let the caller free it */
132 return 1;
133}
134
Samuel Ortiz17f841c2009-01-23 13:45:20 -0800135int iwl_send_add_sta(struct iwl_priv *priv,
Tomas Winkler133636d2008-05-05 10:22:34 +0800136 struct iwl_addsta_cmd *sta, u8 flags)
137{
138 struct iwl_rx_packet *res = NULL;
139 int ret = 0;
140 u8 data[sizeof(*sta)];
141 struct iwl_host_cmd cmd = {
142 .id = REPLY_ADD_STA,
143 .meta.flags = flags,
144 .data = data,
145 };
146
Tomas Winkler42132bc2008-05-29 16:35:03 +0800147 if (flags & CMD_ASYNC)
148 cmd.meta.u.callback = iwl_add_sta_callback;
149 else
Tomas Winkler133636d2008-05-05 10:22:34 +0800150 cmd.meta.flags |= CMD_WANT_SKB;
151
152 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
153 ret = iwl_send_cmd(priv, &cmd);
154
155 if (ret || (flags & CMD_ASYNC))
156 return ret;
157
158 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
159 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800160 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
Tomas Winkler133636d2008-05-05 10:22:34 +0800161 res->hdr.flags);
162 ret = -EIO;
163 }
164
165 if (ret == 0) {
166 switch (res->u.add_sta.status) {
167 case ADD_STA_SUCCESS_MSK:
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800168 iwl_sta_ucode_activate(priv, sta->sta.sta_id);
Tomas Winklere1623442009-01-27 14:27:56 -0800169 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
Tomas Winkler133636d2008-05-05 10:22:34 +0800170 break;
171 default:
172 ret = -EIO;
Winkler, Tomas39aadf82008-12-19 10:37:32 +0800173 IWL_WARN(priv, "REPLY_ADD_STA failed\n");
Tomas Winkler133636d2008-05-05 10:22:34 +0800174 break;
175 }
176 }
177
178 priv->alloc_rxb_skb--;
179 dev_kfree_skb_any(cmd.meta.u.skb);
180
181 return ret;
182}
Samuel Ortiz17f841c2009-01-23 13:45:20 -0800183EXPORT_SYMBOL(iwl_send_add_sta);
Tomas Winkler947b13a2008-04-16 16:34:48 -0700184
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800185static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200186 struct ieee80211_sta_ht_cap *sta_ht_inf)
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800187{
188 __le32 sta_flags;
189 u8 mimo_ps_mode;
190
191 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
192 goto done;
193
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800194 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800195
196 sta_flags = priv->stations[index].sta.station_flags;
197
198 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
199
200 switch (mimo_ps_mode) {
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800201 case WLAN_HT_CAP_SM_PS_STATIC:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800202 sta_flags |= STA_FLG_MIMO_DIS_MSK;
203 break;
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800204 case WLAN_HT_CAP_SM_PS_DYNAMIC:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800205 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
206 break;
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800207 case WLAN_HT_CAP_SM_PS_DISABLED:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800208 break;
209 default:
Winkler, Tomas39aadf82008-12-19 10:37:32 +0800210 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800211 break;
212 }
213
214 sta_flags |= cpu_to_le32(
215 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
216
217 sta_flags |= cpu_to_le32(
218 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
219
220 if (iwl_is_fat_tx_allowed(priv, sta_ht_inf))
221 sta_flags |= STA_FLG_FAT_EN_MSK;
222 else
223 sta_flags &= ~STA_FLG_FAT_EN_MSK;
224
225 priv->stations[index].sta.station_flags = sta_flags;
226 done:
227 return;
228}
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800229
230/**
231 * iwl_add_station_flags - Add station to tables in driver and device
232 */
233u8 iwl_add_station_flags(struct iwl_priv *priv, const u8 *addr, int is_ap,
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200234 u8 flags, struct ieee80211_sta_ht_cap *ht_info)
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800235{
236 int i;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800237 int sta_id = IWL_INVALID_STATION;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800238 struct iwl_station_entry *station;
239 unsigned long flags_spin;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800240
241 spin_lock_irqsave(&priv->sta_lock, flags_spin);
242 if (is_ap)
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800243 sta_id = IWL_AP_ID;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800244 else if (is_broadcast_ether_addr(addr))
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800245 sta_id = priv->hw_params.bcast_sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800246 else
247 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
248 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
249 addr)) {
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800250 sta_id = i;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800251 break;
252 }
253
254 if (!priv->stations[i].used &&
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800255 sta_id == IWL_INVALID_STATION)
256 sta_id = i;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800257 }
258
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800259 /* These two conditions have the same outcome, but keep them separate
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800260 since they have different meanings */
261 if (unlikely(sta_id == IWL_INVALID_STATION)) {
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800262 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800263 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800264 }
265
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800266 if (priv->stations[sta_id].used &&
267 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800268 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800269 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800270 }
271
272
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800273 station = &priv->stations[sta_id];
274 station->used = IWL_STA_DRIVER_ACTIVE;
Tomas Winklere1623442009-01-27 14:27:56 -0800275 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
Johannes Berge1749612008-10-27 15:59:26 -0700276 sta_id, addr);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800277 priv->num_stations++;
278
279 /* Set up the REPLY_ADD_STA command to send to device */
280 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
281 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
282 station->sta.mode = 0;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800283 station->sta.sta.sta_id = sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800284 station->sta.station_flags = 0;
285
286 /* BCAST station and IBSS stations do not work in HT mode */
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800287 if (sta_id != priv->hw_params.bcast_sta_id &&
Johannes Berg05c914f2008-09-11 00:01:58 +0200288 priv->iw_mode != NL80211_IFTYPE_ADHOC)
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800289 iwl_set_ht_add_station(priv, sta_id, ht_info);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800290
291 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
292
293 /* Add station to device's station table */
294 iwl_send_add_sta(priv, &station->sta, flags);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800295 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800296
297}
298EXPORT_SYMBOL(iwl_add_station_flags);
299
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800300static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800301{
302 unsigned long flags;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800303 u8 sta_id = iwl_find_station(priv, addr);
304
305 BUG_ON(sta_id == IWL_INVALID_STATION);
306
Tomas Winklere1623442009-01-27 14:27:56 -0800307 IWL_DEBUG_ASSOC(priv, "Removed STA from Ucode: %pM\n", addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800308
309 spin_lock_irqsave(&priv->sta_lock, flags);
310
311 /* Ucode must be active and driver must be non active */
312 if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE)
Winkler, Tomas15b16872008-12-19 10:37:33 +0800313 IWL_ERR(priv, "removed non active STA %d\n", sta_id);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800314
315 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
316
317 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
318 spin_unlock_irqrestore(&priv->sta_lock, flags);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800319}
320
321static int iwl_remove_sta_callback(struct iwl_priv *priv,
322 struct iwl_cmd *cmd, struct sk_buff *skb)
323{
324 struct iwl_rx_packet *res = NULL;
Tomas Winkler3257e5d2008-10-14 12:32:43 -0700325 struct iwl_rem_sta_cmd *rm_sta =
326 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
327 const char *addr = rm_sta->addr;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800328
329 if (!skb) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800330 IWL_ERR(priv, "Error: Response NULL in REPLY_REMOVE_STA.\n");
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800331 return 1;
332 }
333
334 res = (struct iwl_rx_packet *)skb->data;
335 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800336 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800337 res->hdr.flags);
338 return 1;
339 }
340
341 switch (res->u.rem_sta.status) {
342 case REM_STA_SUCCESS_MSK:
343 iwl_sta_ucode_deactivate(priv, addr);
344 break;
345 default:
Winkler, Tomas15b16872008-12-19 10:37:33 +0800346 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800347 break;
348 }
349
350 /* We didn't cache the SKB; let the caller free it */
351 return 1;
352}
353
354static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
355 u8 flags)
356{
357 struct iwl_rx_packet *res = NULL;
358 int ret;
359
360 struct iwl_rem_sta_cmd rm_sta_cmd;
361
362 struct iwl_host_cmd cmd = {
363 .id = REPLY_REMOVE_STA,
364 .len = sizeof(struct iwl_rem_sta_cmd),
365 .meta.flags = flags,
366 .data = &rm_sta_cmd,
367 };
368
369 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
370 rm_sta_cmd.num_sta = 1;
371 memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);
372
373 if (flags & CMD_ASYNC)
374 cmd.meta.u.callback = iwl_remove_sta_callback;
375 else
376 cmd.meta.flags |= CMD_WANT_SKB;
377 ret = iwl_send_cmd(priv, &cmd);
378
379 if (ret || (flags & CMD_ASYNC))
380 return ret;
381
382 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
383 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800384 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800385 res->hdr.flags);
386 ret = -EIO;
387 }
388
389 if (!ret) {
390 switch (res->u.rem_sta.status) {
391 case REM_STA_SUCCESS_MSK:
392 iwl_sta_ucode_deactivate(priv, addr);
Tomas Winklere1623442009-01-27 14:27:56 -0800393 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800394 break;
395 default:
396 ret = -EIO;
Winkler, Tomas15b16872008-12-19 10:37:33 +0800397 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800398 break;
399 }
400 }
401
402 priv->alloc_rxb_skb--;
403 dev_kfree_skb_any(cmd.meta.u.skb);
404
405 return ret;
406}
Emmanuel Grumbachbe1f3ab62008-06-12 09:47:18 +0800407
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800408/**
409 * iwl_remove_station - Remove driver's knowledge of station.
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800410 */
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800411int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800412{
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800413 int sta_id = IWL_INVALID_STATION;
414 int i, ret = -EINVAL;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800415 unsigned long flags;
416
417 spin_lock_irqsave(&priv->sta_lock, flags);
418
419 if (is_ap)
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800420 sta_id = IWL_AP_ID;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800421 else if (is_broadcast_ether_addr(addr))
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800422 sta_id = priv->hw_params.bcast_sta_id;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800423 else
424 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
425 if (priv->stations[i].used &&
426 !compare_ether_addr(priv->stations[i].sta.sta.addr,
427 addr)) {
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800428 sta_id = i;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800429 break;
430 }
431
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800432 if (unlikely(sta_id == IWL_INVALID_STATION))
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800433 goto out;
434
Tomas Winklere1623442009-01-27 14:27:56 -0800435 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
Johannes Berge1749612008-10-27 15:59:26 -0700436 sta_id, addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800437
438 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800439 IWL_ERR(priv, "Removing %pM but non DRIVER active\n",
Johannes Berge1749612008-10-27 15:59:26 -0700440 addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800441 goto out;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800442 }
443
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800444 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800445 IWL_ERR(priv, "Removing %pM but non UCODE active\n",
Johannes Berge1749612008-10-27 15:59:26 -0700446 addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800447 goto out;
448 }
449
450
451 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
452
453 priv->num_stations--;
454
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800455 BUG_ON(priv->num_stations < 0);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800456
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800457 spin_unlock_irqrestore(&priv->sta_lock, flags);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800458
459 ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
460 return ret;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800461out:
462 spin_unlock_irqrestore(&priv->sta_lock, flags);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800463 return ret;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800464}
465EXPORT_SYMBOL(iwl_remove_station);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800466
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800467/**
468 * iwl_clear_stations_table - Clear the driver's station table
469 *
470 * NOTE: This does not clear or otherwise alter the device's station table.
471 */
472void iwl_clear_stations_table(struct iwl_priv *priv)
473{
474 unsigned long flags;
Mohamed Abbas48676eb2009-03-11 11:17:59 -0700475 int i;
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800476
477 spin_lock_irqsave(&priv->sta_lock, flags);
478
479 if (iwl_is_alive(priv) &&
480 !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
481 iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
Winkler, Tomas15b16872008-12-19 10:37:33 +0800482 IWL_ERR(priv, "Couldn't clear the station table\n");
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800483
484 priv->num_stations = 0;
485 memset(priv->stations, 0, sizeof(priv->stations));
486
Reinette Chatre5e468822009-01-28 09:38:30 -0800487 /* clean ucode key table bit map */
488 priv->ucode_key_table = 0;
489
Mohamed Abbas48676eb2009-03-11 11:17:59 -0700490 /* keep track of static keys */
491 for (i = 0; i < WEP_KEYS_MAX ; i++) {
492 if (priv->wep_keys[i].key_size)
493 test_and_set_bit(i, &priv->ucode_key_table);
494 }
495
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800496 spin_unlock_irqrestore(&priv->sta_lock, flags);
497}
498EXPORT_SYMBOL(iwl_clear_stations_table);
499
Abhijeet Kolekar6e21f152009-02-27 16:21:21 -0800500int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700501{
502 int i;
503
504 for (i = 0; i < STA_KEY_MAX_NUM; i++)
Emmanuel Grumbach77bab602008-04-15 16:01:44 -0700505 if (!test_and_set_bit(i, &priv->ucode_key_table))
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700506 return i;
507
Tomas Winkler40a9a822008-11-25 23:29:03 +0200508 return WEP_INVALID_OFFSET;
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700509}
Abhijeet Kolekar6e21f152009-02-27 16:21:21 -0800510EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700511
512int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
513{
514 int i, not_empty = 0;
515 u8 buff[sizeof(struct iwl_wep_cmd) +
516 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
517 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
518 size_t cmd_size = sizeof(struct iwl_wep_cmd);
519 struct iwl_host_cmd cmd = {
520 .id = REPLY_WEPKEY,
521 .data = wep_cmd,
522 .meta.flags = CMD_ASYNC,
523 };
524
525 memset(wep_cmd, 0, cmd_size +
526 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
527
528 for (i = 0; i < WEP_KEYS_MAX ; i++) {
529 wep_cmd->key[i].key_index = i;
530 if (priv->wep_keys[i].key_size) {
531 wep_cmd->key[i].key_offset = i;
532 not_empty = 1;
533 } else {
534 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
535 }
536
537 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
538 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
539 priv->wep_keys[i].key_size);
540 }
541
542 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
543 wep_cmd->num_keys = WEP_KEYS_MAX;
544
545 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
546
547 cmd.len = cmd_size;
548
549 if (not_empty || send_if_empty)
550 return iwl_send_cmd(priv, &cmd);
551 else
552 return 0;
553}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800554EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700555
556int iwl_remove_default_wep_key(struct iwl_priv *priv,
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700557 struct ieee80211_key_conf *keyconf)
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700558{
559 int ret;
560 unsigned long flags;
561
562 spin_lock_irqsave(&priv->sta_lock, flags);
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700563
564 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
Winkler, Tomas15b16872008-12-19 10:37:33 +0800565 IWL_ERR(priv, "index %d not used in uCode key table.\n",
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700566 keyconf->keyidx);
567
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700568 priv->default_wep_key--;
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700569 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700570 ret = iwl_send_static_wepkey_cmd(priv, 1);
Tomas Winklere1623442009-01-27 14:27:56 -0800571 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800572 keyconf->keyidx, ret);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700573 spin_unlock_irqrestore(&priv->sta_lock, flags);
574
575 return ret;
576}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800577EXPORT_SYMBOL(iwl_remove_default_wep_key);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700578
579int iwl_set_default_wep_key(struct iwl_priv *priv,
580 struct ieee80211_key_conf *keyconf)
581{
582 int ret;
583 unsigned long flags;
584
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800585 if (keyconf->keylen != WEP_KEY_LEN_128 &&
586 keyconf->keylen != WEP_KEY_LEN_64) {
Tomas Winklere1623442009-01-27 14:27:56 -0800587 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800588 return -EINVAL;
589 }
590
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700591 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800592 keyconf->hw_key_idx = HW_KEY_DEFAULT;
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700593 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
594
595 spin_lock_irqsave(&priv->sta_lock, flags);
596 priv->default_wep_key++;
597
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700598 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
Winkler, Tomas15b16872008-12-19 10:37:33 +0800599 IWL_ERR(priv, "index %d already used in uCode key table.\n",
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700600 keyconf->keyidx);
601
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700602 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
603 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
604 keyconf->keylen);
605
606 ret = iwl_send_static_wepkey_cmd(priv, 0);
Tomas Winklere1623442009-01-27 14:27:56 -0800607 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800608 keyconf->keylen, keyconf->keyidx, ret);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700609 spin_unlock_irqrestore(&priv->sta_lock, flags);
610
611 return ret;
612}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800613EXPORT_SYMBOL(iwl_set_default_wep_key);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700614
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700615static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700616 struct ieee80211_key_conf *keyconf,
617 u8 sta_id)
618{
619 unsigned long flags;
620 __le16 key_flags = 0;
621 int ret;
622
623 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700624
625 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
626 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
627 key_flags &= ~STA_KEY_FLG_INVALID;
628
629 if (keyconf->keylen == WEP_KEY_LEN_128)
630 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
631
Tomas Winkler5425e492008-04-15 16:01:38 -0700632 if (sta_id == priv->hw_params.bcast_sta_id)
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700633 key_flags |= STA_KEY_MULTICAST_MSK;
634
635 spin_lock_irqsave(&priv->sta_lock, flags);
636
637 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
638 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
639 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
640
641 memcpy(priv->stations[sta_id].keyinfo.key,
642 keyconf->key, keyconf->keylen);
643
644 memcpy(&priv->stations[sta_id].sta.key.key[3],
645 keyconf->key, keyconf->keylen);
646
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700647 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
648 == STA_KEY_FLG_NO_ENC)
649 priv->stations[sta_id].sta.key.key_offset =
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700650 iwl_get_free_ucode_key_index(priv);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700651 /* else, we are overriding an existing key => no need to allocated room
652 * in uCode. */
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700653
Tomas Winkler40a9a822008-11-25 23:29:03 +0200654 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +0100655 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +0200656
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700657 priv->stations[sta_id].sta.key.key_flags = key_flags;
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700658 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
659 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
660
Tomas Winkler133636d2008-05-05 10:22:34 +0800661 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700662
663 spin_unlock_irqrestore(&priv->sta_lock, flags);
664
665 return ret;
666}
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700667
668static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
669 struct ieee80211_key_conf *keyconf,
670 u8 sta_id)
671{
672 unsigned long flags;
673 __le16 key_flags = 0;
Tomas Winkler40a9a822008-11-25 23:29:03 +0200674 int ret;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700675
676 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
677 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
678 key_flags &= ~STA_KEY_FLG_INVALID;
679
Tomas Winkler5425e492008-04-15 16:01:38 -0700680 if (sta_id == priv->hw_params.bcast_sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700681 key_flags |= STA_KEY_MULTICAST_MSK;
682
683 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700684
685 spin_lock_irqsave(&priv->sta_lock, flags);
686 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
687 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
688
689 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
690 keyconf->keylen);
691
692 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
693 keyconf->keylen);
694
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700695 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
696 == STA_KEY_FLG_NO_ENC)
697 priv->stations[sta_id].sta.key.key_offset =
698 iwl_get_free_ucode_key_index(priv);
699 /* else, we are overriding an existing key => no need to allocated room
700 * in uCode. */
701
Tomas Winkler40a9a822008-11-25 23:29:03 +0200702 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +0100703 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +0200704
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700705 priv->stations[sta_id].sta.key.key_flags = key_flags;
706 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
707 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
708
Tomas Winkler40a9a822008-11-25 23:29:03 +0200709 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
710
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700711 spin_unlock_irqrestore(&priv->sta_lock, flags);
712
Tomas Winkler40a9a822008-11-25 23:29:03 +0200713 return ret;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700714}
715
716static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
717 struct ieee80211_key_conf *keyconf,
718 u8 sta_id)
719{
720 unsigned long flags;
721 int ret = 0;
Reinette Chatre299f5462009-04-30 13:56:31 -0700722 __le16 key_flags = 0;
723
724 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
725 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
726 key_flags &= ~STA_KEY_FLG_INVALID;
727
728 if (sta_id == priv->hw_params.bcast_sta_id)
729 key_flags |= STA_KEY_MULTICAST_MSK;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700730
731 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
732 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700733
734 spin_lock_irqsave(&priv->sta_lock, flags);
735
736 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700737 priv->stations[sta_id].keyinfo.keylen = 16;
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700738
739 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
740 == STA_KEY_FLG_NO_ENC)
741 priv->stations[sta_id].sta.key.key_offset =
Emmanuel Grumbach77bab602008-04-15 16:01:44 -0700742 iwl_get_free_ucode_key_index(priv);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700743 /* else, we are overriding an existing key => no need to allocated room
744 * in uCode. */
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700745
Tomas Winkler40a9a822008-11-25 23:29:03 +0200746 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +0100747 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +0200748
Reinette Chatre299f5462009-04-30 13:56:31 -0700749 priv->stations[sta_id].sta.key.key_flags = key_flags;
750
751
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700752 /* This copy is acutally not needed: we get the key with each TX */
753 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
754
755 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
756
757 spin_unlock_irqrestore(&priv->sta_lock, flags);
758
759 return ret;
760}
761
Tomas Winkler9f586712008-11-12 13:14:05 -0800762void iwl_update_tkip_key(struct iwl_priv *priv,
763 struct ieee80211_key_conf *keyconf,
764 const u8 *addr, u32 iv32, u16 *phase1key)
765{
766 u8 sta_id = IWL_INVALID_STATION;
767 unsigned long flags;
Tomas Winkler9f586712008-11-12 13:14:05 -0800768 int i;
Tomas Winkler9f586712008-11-12 13:14:05 -0800769
770 sta_id = iwl_find_station(priv, addr);
771 if (sta_id == IWL_INVALID_STATION) {
Tomas Winklere1623442009-01-27 14:27:56 -0800772 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
Tomas Winkler9f586712008-11-12 13:14:05 -0800773 addr);
774 return;
775 }
776
777 if (iwl_scan_cancel(priv)) {
778 /* cancel scan failed, just live w/ bad key and rely
779 briefly on SW decryption */
780 return;
781 }
782
Tomas Winkler9f586712008-11-12 13:14:05 -0800783 spin_lock_irqsave(&priv->sta_lock, flags);
784
Tomas Winkler9f586712008-11-12 13:14:05 -0800785 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
786
787 for (i = 0; i < 5; i++)
788 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
789 cpu_to_le16(phase1key[i]);
790
791 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
792 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
793
794 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
795
796 spin_unlock_irqrestore(&priv->sta_lock, flags);
797
798}
799EXPORT_SYMBOL(iwl_update_tkip_key);
800
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700801int iwl_remove_dynamic_key(struct iwl_priv *priv,
802 struct ieee80211_key_conf *keyconf,
803 u8 sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700804{
805 unsigned long flags;
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700806 int ret = 0;
807 u16 key_flags;
808 u8 keyidx;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700809
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800810 priv->key_mapping_key--;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700811
812 spin_lock_irqsave(&priv->sta_lock, flags);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700813 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
814 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
815
Tomas Winklere1623442009-01-27 14:27:56 -0800816 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800817 keyconf->keyidx, sta_id);
818
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700819 if (keyconf->keyidx != keyidx) {
820 /* We need to remove a key with index different that the one
821 * in the uCode. This means that the key we need to remove has
822 * been replaced by another one with different index.
823 * Don't do anything and return ok
824 */
825 spin_unlock_irqrestore(&priv->sta_lock, flags);
826 return 0;
827 }
828
Tomas Winkler40a9a822008-11-25 23:29:03 +0200829 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
Winkler, Tomas39aadf82008-12-19 10:37:32 +0800830 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
Tomas Winkler40a9a822008-11-25 23:29:03 +0200831 keyconf->keyidx, key_flags);
832 spin_unlock_irqrestore(&priv->sta_lock, flags);
833 return 0;
834 }
835
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700836 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
837 &priv->ucode_key_table))
Winkler, Tomas15b16872008-12-19 10:37:33 +0800838 IWL_ERR(priv, "index %d not used in uCode key table.\n",
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700839 priv->stations[sta_id].sta.key.key_offset);
840 memset(&priv->stations[sta_id].keyinfo, 0,
Tomas Winkler6def9762008-05-05 10:22:31 +0800841 sizeof(struct iwl_hw_key));
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700842 memset(&priv->stations[sta_id].sta.key, 0,
843 sizeof(struct iwl4965_keyinfo));
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700844 priv->stations[sta_id].sta.key.key_flags =
845 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
846 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700847 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
848 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700849
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800850 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700851 spin_unlock_irqrestore(&priv->sta_lock, flags);
852 return ret;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700853}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800854EXPORT_SYMBOL(iwl_remove_dynamic_key);
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700855
856int iwl_set_dynamic_key(struct iwl_priv *priv,
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800857 struct ieee80211_key_conf *keyconf, u8 sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700858{
859 int ret;
860
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800861 priv->key_mapping_key++;
862 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700863
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800864 switch (keyconf->alg) {
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700865 case ALG_CCMP:
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800866 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700867 break;
868 case ALG_TKIP:
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800869 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700870 break;
871 case ALG_WEP:
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800872 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700873 break;
874 default:
Winkler, Tomas15b16872008-12-19 10:37:33 +0800875 IWL_ERR(priv,
876 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700877 ret = -EINVAL;
878 }
879
Tomas Winklere1623442009-01-27 14:27:56 -0800880 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800881 keyconf->alg, keyconf->keylen, keyconf->keyidx,
882 sta_id, ret);
883
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700884 return ret;
885}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800886EXPORT_SYMBOL(iwl_set_dynamic_key);
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700887
Tomas Winkler66c73db2008-04-15 16:01:40 -0700888#ifdef CONFIG_IWLWIFI_DEBUG
889static void iwl_dump_lq_cmd(struct iwl_priv *priv,
890 struct iwl_link_quality_cmd *lq)
891{
892 int i;
Tomas Winklere1623442009-01-27 14:27:56 -0800893 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
894 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
Tomas Winkler66c73db2008-04-15 16:01:40 -0700895 lq->general_params.single_stream_ant_msk,
896 lq->general_params.dual_stream_ant_msk);
897
898 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
Tomas Winklere1623442009-01-27 14:27:56 -0800899 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
Tomas Winkler66c73db2008-04-15 16:01:40 -0700900 i, lq->rs_table[i].rate_n_flags);
901}
902#else
903static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
904 struct iwl_link_quality_cmd *lq)
905{
906}
907#endif
908
909int iwl_send_lq_cmd(struct iwl_priv *priv,
910 struct iwl_link_quality_cmd *lq, u8 flags)
911{
912 struct iwl_host_cmd cmd = {
913 .id = REPLY_TX_LINK_QUALITY_CMD,
914 .len = sizeof(struct iwl_link_quality_cmd),
915 .meta.flags = flags,
916 .data = lq,
917 };
918
919 if ((lq->sta_id == 0xFF) &&
Johannes Berg05c914f2008-09-11 00:01:58 +0200920 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
Tomas Winkler66c73db2008-04-15 16:01:40 -0700921 return -EINVAL;
922
923 if (lq->sta_id == 0xFF)
924 lq->sta_id = IWL_AP_ID;
925
Tomas Winkler3ac7f142008-07-21 02:40:14 +0300926 iwl_dump_lq_cmd(priv, lq);
Tomas Winkler66c73db2008-04-15 16:01:40 -0700927
Ron Rindjunsky36e1f162008-06-30 17:23:13 +0800928 if (iwl_is_associated(priv) && priv->assoc_station_added)
Tomas Winkler66c73db2008-04-15 16:01:40 -0700929 return iwl_send_cmd(priv, &cmd);
930
931 return 0;
932}
933EXPORT_SYMBOL(iwl_send_lq_cmd);
934
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800935/**
936 * iwl_sta_init_lq - Initialize a station's hardware rate table
937 *
938 * The uCode's station table contains a table of fallback rates
939 * for automatic fallback during transmission.
940 *
941 * NOTE: This sets up a default set of values. These will be replaced later
Tomas Winklere227cea2008-07-18 13:53:05 +0800942 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800943 * rc80211_simple.
944 *
945 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
946 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
947 * which requires station table entry to exist).
948 */
949static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, int is_ap)
950{
951 int i, r;
952 struct iwl_link_quality_cmd link_cmd = {
953 .reserved1 = 0,
954 };
Tomas Winkler5d664a42008-10-08 09:37:29 +0800955 u32 rate_flags;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800956
957 /* Set up the rate scaling to start at selected rate, fall back
958 * all the way down to 1M in IEEE order, and then spin on 1M */
959 if (is_ap)
960 r = IWL_RATE_54M_INDEX;
961 else if (priv->band == IEEE80211_BAND_5GHZ)
962 r = IWL_RATE_6M_INDEX;
963 else
964 r = IWL_RATE_1M_INDEX;
965
966 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
967 rate_flags = 0;
968 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
969 rate_flags |= RATE_MCS_CCK_MSK;
970
Tomas Winkler5d664a42008-10-08 09:37:29 +0800971 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
972 RATE_MCS_ANT_POS;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800973
974 link_cmd.rs_table[i].rate_n_flags =
Tomas Winklere7d326a2008-06-12 09:47:11 +0800975 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
Winkler, Tomaseb4779c2008-10-29 14:05:44 -0700976 r = iwl_get_prev_ieee_rate(r);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800977 }
978
Tomas Winkler5d664a42008-10-08 09:37:29 +0800979 link_cmd.general_params.single_stream_ant_msk =
980 first_antenna(priv->hw_params.valid_tx_ant);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800981 link_cmd.general_params.dual_stream_ant_msk = 3;
982 link_cmd.agg_params.agg_dis_start_th = 3;
983 link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
984
985 /* Update the rate scaling for control frame Tx to AP */
986 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
987
988 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
989 sizeof(link_cmd), &link_cmd, NULL);
990}
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800991
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800992/**
993 * iwl_rxon_add_station - add station into station table.
994 *
995 * there is only one AP station with id= IWL_AP_ID
Tomas Winklera96a27f2008-10-23 23:48:56 -0700996 * NOTE: mutex must be held before calling this function
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800997 */
998int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
999{
Johannes Bergae5eb022008-10-14 16:58:37 +02001000 struct ieee80211_sta *sta;
1001 struct ieee80211_sta_ht_cap ht_config;
1002 struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001003 u8 sta_id;
1004
1005 /* Add station to device's station table */
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001006
Johannes Bergae5eb022008-10-14 16:58:37 +02001007 /*
1008 * XXX: This check is definitely not correct, if we're an AP
1009 * it'll always be false which is not what we want, but
1010 * it doesn't look like iwlagn is prepared to be an HT
1011 * AP anyway.
1012 */
1013 if (priv->current_ht_config.is_ht) {
1014 rcu_read_lock();
1015 sta = ieee80211_find_sta(priv->hw, addr);
1016 if (sta) {
1017 memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
1018 cur_ht_config = &ht_config;
1019 }
1020 rcu_read_unlock();
1021 }
1022
1023 sta_id = iwl_add_station_flags(priv, addr, is_ap,
1024 0, cur_ht_config);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001025
1026 /* Set up default rate scaling table in device's station table */
1027 iwl_sta_init_lq(priv, addr, is_ap);
1028
1029 return sta_id;
1030}
1031EXPORT_SYMBOL(iwl_rxon_add_station);
1032
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001033/**
1034 * iwl_get_sta_id - Find station's index within station table
1035 *
1036 * If new IBSS station, create new entry in station table
1037 */
1038int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1039{
1040 int sta_id;
1041 u16 fc = le16_to_cpu(hdr->frame_control);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001042
1043 /* If this frame is broadcast or management, use broadcast station id */
1044 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1045 is_multicast_ether_addr(hdr->addr1))
1046 return priv->hw_params.bcast_sta_id;
1047
1048 switch (priv->iw_mode) {
1049
1050 /* If we are a client station in a BSS network, use the special
1051 * AP station entry (that's the only station we communicate with) */
Johannes Berg05c914f2008-09-11 00:01:58 +02001052 case NL80211_IFTYPE_STATION:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001053 return IWL_AP_ID;
1054
1055 /* If we are an AP, then find the station, or use BCAST */
Johannes Berg05c914f2008-09-11 00:01:58 +02001056 case NL80211_IFTYPE_AP:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001057 sta_id = iwl_find_station(priv, hdr->addr1);
1058 if (sta_id != IWL_INVALID_STATION)
1059 return sta_id;
1060 return priv->hw_params.bcast_sta_id;
1061
1062 /* If this frame is going out to an IBSS network, find the station,
1063 * or create a new station table entry */
Johannes Berg05c914f2008-09-11 00:01:58 +02001064 case NL80211_IFTYPE_ADHOC:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001065 sta_id = iwl_find_station(priv, hdr->addr1);
1066 if (sta_id != IWL_INVALID_STATION)
1067 return sta_id;
1068
1069 /* Create new station table entry */
1070 sta_id = iwl_add_station_flags(priv, hdr->addr1,
1071 0, CMD_ASYNC, NULL);
1072
1073 if (sta_id != IWL_INVALID_STATION)
1074 return sta_id;
1075
Tomas Winklere1623442009-01-27 14:27:56 -08001076 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001077 "Defaulting to broadcast...\n",
Johannes Berge1749612008-10-27 15:59:26 -07001078 hdr->addr1);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001079 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1080 return priv->hw_params.bcast_sta_id;
1081
Stefanik Gábord10c4ec2008-09-03 11:26:59 +08001082 /* If we are in monitor mode, use BCAST. This is required for
1083 * packet injection. */
Johannes Berg05c914f2008-09-11 00:01:58 +02001084 case NL80211_IFTYPE_MONITOR:
Stefanik Gábord10c4ec2008-09-03 11:26:59 +08001085 return priv->hw_params.bcast_sta_id;
1086
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001087 default:
Winkler, Tomas39aadf82008-12-19 10:37:32 +08001088 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1089 priv->iw_mode);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001090 return priv->hw_params.bcast_sta_id;
1091 }
1092}
1093EXPORT_SYMBOL(iwl_get_sta_id);
1094
Tomas Winkler5083e562008-05-29 16:35:15 +08001095/**
Tomas Winkler9f586712008-11-12 13:14:05 -08001096 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
Tomas Winkler5083e562008-05-29 16:35:15 +08001097 */
Tomas Winkler9f586712008-11-12 13:14:05 -08001098void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
Tomas Winkler5083e562008-05-29 16:35:15 +08001099{
1100 unsigned long flags;
1101
1102 /* Remove "disable" flag, to enable Tx for this TID */
1103 spin_lock_irqsave(&priv->sta_lock, flags);
1104 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1105 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1106 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1107 spin_unlock_irqrestore(&priv->sta_lock, flags);
1108
1109 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1110}
Tomas Winkler9f586712008-11-12 13:14:05 -08001111EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1112
1113int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1114 const u8 *addr, int tid, u16 ssn)
1115{
1116 unsigned long flags;
1117 int sta_id;
1118
1119 sta_id = iwl_find_station(priv, addr);
1120 if (sta_id == IWL_INVALID_STATION)
1121 return -ENXIO;
1122
1123 spin_lock_irqsave(&priv->sta_lock, flags);
1124 priv->stations[sta_id].sta.station_flags_msk = 0;
1125 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1126 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1127 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1128 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1129 spin_unlock_irqrestore(&priv->sta_lock, flags);
1130
1131 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1132 CMD_ASYNC);
1133}
1134EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1135
1136int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1137{
1138 unsigned long flags;
1139 int sta_id;
1140
1141 sta_id = iwl_find_station(priv, addr);
Wey-Yi Guya2f1cbe2009-03-17 21:51:52 -07001142 if (sta_id == IWL_INVALID_STATION) {
1143 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
Tomas Winkler9f586712008-11-12 13:14:05 -08001144 return -ENXIO;
Wey-Yi Guya2f1cbe2009-03-17 21:51:52 -07001145 }
Tomas Winkler9f586712008-11-12 13:14:05 -08001146
1147 spin_lock_irqsave(&priv->sta_lock, flags);
1148 priv->stations[sta_id].sta.station_flags_msk = 0;
1149 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1150 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1151 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1152 spin_unlock_irqrestore(&priv->sta_lock, flags);
1153
1154 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1155 CMD_ASYNC);
1156}
1157EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1158
1159static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1160{
1161 unsigned long flags;
1162
1163 spin_lock_irqsave(&priv->sta_lock, flags);
1164 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1165 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1166 priv->stations[sta_id].sta.sta.modify_mask = 0;
1167 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1168 spin_unlock_irqrestore(&priv->sta_lock, flags);
1169
1170 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1171}
1172
1173void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
1174{
1175 /* FIXME: need locking over ps_status ??? */
1176 u8 sta_id = iwl_find_station(priv, addr);
1177
1178 if (sta_id != IWL_INVALID_STATION) {
1179 u8 sta_awake = priv->stations[sta_id].
1180 ps_status == STA_PS_STATUS_WAKE;
1181
1182 if (sta_awake && ps_bit)
1183 priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
1184 else if (!sta_awake && !ps_bit) {
1185 iwl_sta_modify_ps_wake(priv, sta_id);
1186 priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;
1187 }
1188 }
1189}
Tomas Winkler5083e562008-05-29 16:35:15 +08001190