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[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-sta.c
CommitLineData
6974e363
EG		 1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
4 *
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:
759ef89f 25 * Intel Linux Wireless <ilw@linux.intel.com>
6974e363
EG		 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30#include <net/mac80211.h>
947b13a7 31#include <linux/etherdevice.h>
6974e363 32
3e0d4cb1 33#include "iwl-dev.h"
6974e363
EG		 34#include "iwl-core.h"
35#include "iwl-sta.h"
6974e363 36#include "iwl-helpers.h"
80fb47a1 37
7a999bf0 38
24e5c401
EG		 39#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
40#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
7a999bf0 41
947b13a7
TW		 42u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
43{
44 int i;
45 int start = 0;
46 int ret = IWL_INVALID_STATION;
47 unsigned long flags;
947b13a7 48
05c914fe
JB		 49 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
50 (priv->iw_mode == NL80211_IFTYPE_AP))
947b13a7
TW		 51 start = IWL_STA_ID;
52
53 if (is_broadcast_ether_addr(addr))
54 return priv->hw_params.bcast_sta_id;
55
56 spin_lock_irqsave(&priv->sta_lock, flags);
57 for (i = start; i < priv->hw_params.max_stations; i++)
58 if (priv->stations[i].used &&
59 (!compare_ether_addr(priv->stations[i].sta.sta.addr,
60 addr))) {
61 ret = i;
62 goto out;
63 }
64
e174961c
JB		 65 IWL_DEBUG_ASSOC_LIMIT("can not find STA %pM total %d\n",
66 addr, priv->num_stations);
947b13a7
TW		 67
68 out:
69 spin_unlock_irqrestore(&priv->sta_lock, flags);
70 return ret;
71}
72EXPORT_SYMBOL(iwl_find_station);
73
be1f3ab6
EG		 74int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
75{
05c914fe 76 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
be1f3ab6
EG		 77 return IWL_AP_ID;
78 } else {
79 u8 *da = ieee80211_get_DA(hdr);
80 return iwl_find_station(priv, da);
81 }
82}
83EXPORT_SYMBOL(iwl_get_ra_sta_id);
84
24e5c401
EG		 85static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
86{
87 unsigned long flags;
24e5c401
EG		 88
89 spin_lock_irqsave(&priv->sta_lock, flags);
90
91 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
92 IWL_ERROR("ACTIVATE a non DRIVER active station %d\n", sta_id);
93
94 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
e174961c
JB		 95 IWL_DEBUG_ASSOC("Added STA to Ucode: %pM\n",
96 priv->stations[sta_id].sta.sta.addr);
24e5c401
EG		 97
98 spin_unlock_irqrestore(&priv->sta_lock, flags);
99}
100
42132bce
TW		 101static 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;
3257e5d4
TW		 105 struct iwl_addsta_cmd *addsta =
106 (struct iwl_addsta_cmd *)cmd->cmd.payload;
107 u8 sta_id = addsta->sta.sta_id;
42132bce
TW		 108
109 if (!skb) {
110 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
111 return 1;
112 }
113
114 res = (struct iwl_rx_packet *)skb->data;
115 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
116 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
117 res->hdr.flags);
118 return 1;
119 }
120
121 switch (res->u.add_sta.status) {
122 case ADD_STA_SUCCESS_MSK:
24e5c401
EG		 123 iwl_sta_ucode_activate(priv, sta_id);
124 /* fall through */
42132bce
TW		 125 default:
126 IWL_DEBUG_HC("Received REPLY_ADD_STA:(0x%08X)\n",
127 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
9f58671e 135static int iwl_send_add_sta(struct iwl_priv *priv,
133636de
TW		 136 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
42132bce
TW		 147 if (flags & CMD_ASYNC)
148 cmd.meta.u.callback = iwl_add_sta_callback;
149 else
133636de
TW		 150 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) {
160 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
161 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:
24e5c401 168 iwl_sta_ucode_activate(priv, sta->sta.sta_id);
133636de
TW		 169 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
170 break;
171 default:
172 ret = -EIO;
173 IWL_WARNING("REPLY_ADD_STA failed\n");
174 break;
175 }
176 }
177
178 priv->alloc_rxb_skb--;
179 dev_kfree_skb_any(cmd.meta.u.skb);
180
181 return ret;
182}
947b13a7 183
4f40e4d9 184static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
d9fe60de 185 struct ieee80211_sta_ht_cap *sta_ht_inf)
4f40e4d9
TW		 186{
187 __le32 sta_flags;
188 u8 mimo_ps_mode;
189
190 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
191 goto done;
192
00c5ae2f 193 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
4f40e4d9
TW		 194
195 sta_flags = priv->stations[index].sta.station_flags;
196
197 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
198
199 switch (mimo_ps_mode) {
00c5ae2f 200 case WLAN_HT_CAP_SM_PS_STATIC:
4f40e4d9
TW		 201 sta_flags |= STA_FLG_MIMO_DIS_MSK;
202 break;
00c5ae2f 203 case WLAN_HT_CAP_SM_PS_DYNAMIC:
4f40e4d9
TW		 204 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
205 break;
00c5ae2f 206 case WLAN_HT_CAP_SM_PS_DISABLED:
4f40e4d9
TW		 207 break;
208 default:
6f147926 209 IWL_WARNING("Invalid MIMO PS mode %d\n", mimo_ps_mode);
4f40e4d9
TW		 210 break;
211 }
212
213 sta_flags |= cpu_to_le32(
214 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
215
216 sta_flags |= cpu_to_le32(
217 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
218
219 if (iwl_is_fat_tx_allowed(priv, sta_ht_inf))
220 sta_flags |= STA_FLG_FAT_EN_MSK;
221 else
222 sta_flags &= ~STA_FLG_FAT_EN_MSK;
223
224 priv->stations[index].sta.station_flags = sta_flags;
225 done:
226 return;
227}
4f40e4d9
TW		 228
229/**
230 * iwl_add_station_flags - Add station to tables in driver and device
231 */
232u8 iwl_add_station_flags(struct iwl_priv *priv, const u8 *addr, int is_ap,
d9fe60de 233 u8 flags, struct ieee80211_sta_ht_cap *ht_info)
4f40e4d9
TW		 234{
235 int i;
24e5c401 236 int sta_id = IWL_INVALID_STATION;
4f40e4d9
TW		 237 struct iwl_station_entry *station;
238 unsigned long flags_spin;
4f40e4d9
TW		 239
240 spin_lock_irqsave(&priv->sta_lock, flags_spin);
241 if (is_ap)
24e5c401 242 sta_id = IWL_AP_ID;
4f40e4d9 243 else if (is_broadcast_ether_addr(addr))
24e5c401 244 sta_id = priv->hw_params.bcast_sta_id;
4f40e4d9
TW		 245 else
246 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
247 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
248 addr)) {
24e5c401 249 sta_id = i;
4f40e4d9
TW		 250 break;
251 }
252
253 if (!priv->stations[i].used &&
24e5c401
EG		 254 sta_id == IWL_INVALID_STATION)
255 sta_id = i;
4f40e4d9
TW		 256 }
257
4f40e4d9 258 /* These two conditions have the same outcome, but keep them separate
24e5c401
EG		 259 since they have different meanings */
260 if (unlikely(sta_id == IWL_INVALID_STATION)) {
4f40e4d9 261 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
24e5c401 262 return sta_id;
4f40e4d9
TW		 263 }
264
24e5c401
EG		 265 if (priv->stations[sta_id].used &&
266 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
4f40e4d9 267 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
24e5c401 268 return sta_id;
4f40e4d9
TW		 269 }
270
271
24e5c401
EG		 272 station = &priv->stations[sta_id];
273 station->used = IWL_STA_DRIVER_ACTIVE;
e174961c
JB		 274 IWL_DEBUG_ASSOC("Add STA to driver ID %d: %pM\n",
275 sta_id, addr);
4f40e4d9
TW		 276 priv->num_stations++;
277
278 /* Set up the REPLY_ADD_STA command to send to device */
279 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
280 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
281 station->sta.mode = 0;
24e5c401 282 station->sta.sta.sta_id = sta_id;
4f40e4d9
TW		 283 station->sta.station_flags = 0;
284
285 /* BCAST station and IBSS stations do not work in HT mode */
24e5c401 286 if (sta_id != priv->hw_params.bcast_sta_id &&
05c914fe 287 priv->iw_mode != NL80211_IFTYPE_ADHOC)
24e5c401 288 iwl_set_ht_add_station(priv, sta_id, ht_info);
4f40e4d9
TW		 289
290 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
291
292 /* Add station to device's station table */
293 iwl_send_add_sta(priv, &station->sta, flags);
24e5c401 294 return sta_id;
4f40e4d9
TW		 295
296}
297EXPORT_SYMBOL(iwl_add_station_flags);
298
24e5c401 299static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
7a999bf0
TW		 300{
301 unsigned long flags;
24e5c401
EG		 302 u8 sta_id = iwl_find_station(priv, addr);
303
304 BUG_ON(sta_id == IWL_INVALID_STATION);
305
e174961c 306 IWL_DEBUG_ASSOC("Removed STA from Ucode: %pM\n", addr);
24e5c401
EG		 307
308 spin_lock_irqsave(&priv->sta_lock, flags);
309
310 /* Ucode must be active and driver must be non active */
311 if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE)
312 IWL_ERROR("removed non active STA %d\n", sta_id);
313
314 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
315
316 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
317 spin_unlock_irqrestore(&priv->sta_lock, flags);
7a999bf0
TW		 318}
319
320static int iwl_remove_sta_callback(struct iwl_priv *priv,
321 struct iwl_cmd *cmd, struct sk_buff *skb)
322{
323 struct iwl_rx_packet *res = NULL;
3257e5d4
TW		 324 struct iwl_rem_sta_cmd *rm_sta =
325 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
326 const char *addr = rm_sta->addr;
7a999bf0
TW		 327
328 if (!skb) {
329 IWL_ERROR("Error: Response NULL in REPLY_REMOVE_STA.\n");
330 return 1;
331 }
332
333 res = (struct iwl_rx_packet *)skb->data;
334 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
335 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
336 res->hdr.flags);
337 return 1;
338 }
339
340 switch (res->u.rem_sta.status) {
341 case REM_STA_SUCCESS_MSK:
342 iwl_sta_ucode_deactivate(priv, addr);
343 break;
344 default:
24e5c401 345 IWL_ERROR("REPLY_REMOVE_STA failed\n");
7a999bf0
TW		 346 break;
347 }
348
349 /* We didn't cache the SKB; let the caller free it */
350 return 1;
351}
352
353static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
354 u8 flags)
355{
356 struct iwl_rx_packet *res = NULL;
357 int ret;
358
359 struct iwl_rem_sta_cmd rm_sta_cmd;
360
361 struct iwl_host_cmd cmd = {
362 .id = REPLY_REMOVE_STA,
363 .len = sizeof(struct iwl_rem_sta_cmd),
364 .meta.flags = flags,
365 .data = &rm_sta_cmd,
366 };
367
368 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
369 rm_sta_cmd.num_sta = 1;
370 memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);
371
372 if (flags & CMD_ASYNC)
373 cmd.meta.u.callback = iwl_remove_sta_callback;
374 else
375 cmd.meta.flags |= CMD_WANT_SKB;
376 ret = iwl_send_cmd(priv, &cmd);
377
378 if (ret || (flags & CMD_ASYNC))
379 return ret;
380
381 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
382 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
383 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
384 res->hdr.flags);
385 ret = -EIO;
386 }
387
388 if (!ret) {
389 switch (res->u.rem_sta.status) {
390 case REM_STA_SUCCESS_MSK:
391 iwl_sta_ucode_deactivate(priv, addr);
392 IWL_DEBUG_ASSOC("REPLY_REMOVE_STA PASSED\n");
393 break;
394 default:
395 ret = -EIO;
396 IWL_ERROR("REPLY_REMOVE_STA failed\n");
397 break;
398 }
399 }
400
401 priv->alloc_rxb_skb--;
402 dev_kfree_skb_any(cmd.meta.u.skb);
403
404 return ret;
405}
be1f3ab6 406
7a999bf0
TW		 407/**
408 * iwl_remove_station - Remove driver's knowledge of station.
7a999bf0 409 */
24e5c401 410int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
7a999bf0 411{
24e5c401
EG		 412 int sta_id = IWL_INVALID_STATION;
413 int i, ret = -EINVAL;
7a999bf0
TW		 414 unsigned long flags;
415
416 spin_lock_irqsave(&priv->sta_lock, flags);
417
418 if (is_ap)
24e5c401 419 sta_id = IWL_AP_ID;
7a999bf0 420 else if (is_broadcast_ether_addr(addr))
24e5c401 421 sta_id = priv->hw_params.bcast_sta_id;
7a999bf0
TW		 422 else
423 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
424 if (priv->stations[i].used &&
425 !compare_ether_addr(priv->stations[i].sta.sta.addr,
426 addr)) {
24e5c401 427 sta_id = i;
7a999bf0
TW		 428 break;
429 }
430
24e5c401 431 if (unlikely(sta_id == IWL_INVALID_STATION))
7a999bf0
TW		 432 goto out;
433
e174961c
JB		 434 IWL_DEBUG_ASSOC("Removing STA from driver:%d %pM\n",
435 sta_id, addr);
24e5c401
EG		 436
437 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
e174961c
JB		 438 IWL_ERROR("Removing %pM but non DRIVER active\n",
439 addr);
24e5c401
EG		 440 goto out;
441 }
442
443 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
e174961c
JB		 444 IWL_ERROR("Removing %pM but non UCODE active\n",
445 addr);
24e5c401 446 goto out;
7a999bf0
TW		 447 }
448
24e5c401
EG		 449
450 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
451
452 priv->num_stations--;
453
7a999bf0 454 BUG_ON(priv->num_stations < 0);
24e5c401 455
7a999bf0 456 spin_unlock_irqrestore(&priv->sta_lock, flags);
24e5c401
EG		 457
458 ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
459 return ret;
7a999bf0
TW		 460out:
461 spin_unlock_irqrestore(&priv->sta_lock, flags);
24e5c401 462 return ret;
7a999bf0
TW		 463}
464EXPORT_SYMBOL(iwl_remove_station);
24e5c401 465
83dde8c9
WT		 466/**
467 * iwl_clear_stations_table - Clear the driver's station table
468 *
469 * NOTE: This does not clear or otherwise alter the device's station table.
470 */
471void iwl_clear_stations_table(struct iwl_priv *priv)
472{
473 unsigned long flags;
474
475 spin_lock_irqsave(&priv->sta_lock, flags);
476
477 if (iwl_is_alive(priv) &&
478 !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
479 iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
480 IWL_ERROR("Couldn't clear the station table\n");
481
482 priv->num_stations = 0;
483 memset(priv->stations, 0, sizeof(priv->stations));
484
485 spin_unlock_irqrestore(&priv->sta_lock, flags);
486}
487EXPORT_SYMBOL(iwl_clear_stations_table);
488
be1f3ab6 489static int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
80fb47a1
EG		 490{
491 int i;
492
493 for (i = 0; i < STA_KEY_MAX_NUM; i++)
77bab602 494 if (!test_and_set_bit(i, &priv->ucode_key_table))
80fb47a1
EG		 495 return i;
496
40a9a829 497 return WEP_INVALID_OFFSET;
80fb47a1 498}
6974e363
EG		 499
500int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
501{
502 int i, not_empty = 0;
503 u8 buff[sizeof(struct iwl_wep_cmd) +
504 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
505 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
506 size_t cmd_size = sizeof(struct iwl_wep_cmd);
507 struct iwl_host_cmd cmd = {
508 .id = REPLY_WEPKEY,
509 .data = wep_cmd,
510 .meta.flags = CMD_ASYNC,
511 };
512
513 memset(wep_cmd, 0, cmd_size +
514 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
515
516 for (i = 0; i < WEP_KEYS_MAX ; i++) {
517 wep_cmd->key[i].key_index = i;
518 if (priv->wep_keys[i].key_size) {
519 wep_cmd->key[i].key_offset = i;
520 not_empty = 1;
521 } else {
522 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
523 }
524
525 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
526 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
527 priv->wep_keys[i].key_size);
528 }
529
530 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
531 wep_cmd->num_keys = WEP_KEYS_MAX;
532
533 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
534
535 cmd.len = cmd_size;
536
537 if (not_empty || send_if_empty)
538 return iwl_send_cmd(priv, &cmd);
539 else
540 return 0;
541}
27aaba0c 542EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
6974e363
EG		 543
544int iwl_remove_default_wep_key(struct iwl_priv *priv,
80fb47a1 545 struct ieee80211_key_conf *keyconf)
6974e363
EG		 546{
547 int ret;
548 unsigned long flags;
549
550 spin_lock_irqsave(&priv->sta_lock, flags);
80fb47a1
EG		 551
552 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
553 IWL_ERROR("index %d not used in uCode key table.\n",
554 keyconf->keyidx);
555
6974e363 556 priv->default_wep_key--;
80fb47a1 557 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
6974e363 558 ret = iwl_send_static_wepkey_cmd(priv, 1);
4564ce8b
EG		 559 IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n",
560 keyconf->keyidx, ret);
6974e363
EG		 561 spin_unlock_irqrestore(&priv->sta_lock, flags);
562
563 return ret;
564}
27aaba0c 565EXPORT_SYMBOL(iwl_remove_default_wep_key);
6974e363
EG		 566
567int iwl_set_default_wep_key(struct iwl_priv *priv,
568 struct ieee80211_key_conf *keyconf)
569{
570 int ret;
571 unsigned long flags;
572
4564ce8b
EG		 573 if (keyconf->keylen != WEP_KEY_LEN_128 &&
574 keyconf->keylen != WEP_KEY_LEN_64) {
575 IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf->keylen);
576 return -EINVAL;
577 }
578
6974e363 579 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
ccc038ab 580 keyconf->hw_key_idx = HW_KEY_DEFAULT;
6974e363
EG		 581 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
582
583 spin_lock_irqsave(&priv->sta_lock, flags);
584 priv->default_wep_key++;
585
80fb47a1
EG		 586 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
587 IWL_ERROR("index %d already used in uCode key table.\n",
588 keyconf->keyidx);
589
6974e363
EG		 590 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
591 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
592 keyconf->keylen);
593
594 ret = iwl_send_static_wepkey_cmd(priv, 0);
4564ce8b
EG		 595 IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n",
596 keyconf->keylen, keyconf->keyidx, ret);
6974e363
EG		 597 spin_unlock_irqrestore(&priv->sta_lock, flags);
598
599 return ret;
600}
27aaba0c 601EXPORT_SYMBOL(iwl_set_default_wep_key);
6974e363 602
7480513f 603static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
0211ddda
EG		 604 struct ieee80211_key_conf *keyconf,
605 u8 sta_id)
606{
607 unsigned long flags;
608 __le16 key_flags = 0;
609 int ret;
610
611 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
0211ddda
EG		 612
613 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
614 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
615 key_flags &= ~STA_KEY_FLG_INVALID;
616
617 if (keyconf->keylen == WEP_KEY_LEN_128)
618 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
619
5425e490 620 if (sta_id == priv->hw_params.bcast_sta_id)
0211ddda
EG		 621 key_flags |= STA_KEY_MULTICAST_MSK;
622
623 spin_lock_irqsave(&priv->sta_lock, flags);
624
625 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
626 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
627 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
628
629 memcpy(priv->stations[sta_id].keyinfo.key,
630 keyconf->key, keyconf->keylen);
631
632 memcpy(&priv->stations[sta_id].sta.key.key[3],
633 keyconf->key, keyconf->keylen);
634
3ec47732
EG		 635 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
636 == STA_KEY_FLG_NO_ENC)
637 priv->stations[sta_id].sta.key.key_offset =
80fb47a1 638 iwl_get_free_ucode_key_index(priv);
3ec47732
EG		 639 /* else, we are overriding an existing key => no need to allocated room
640 * in uCode. */
0211ddda 641
40a9a829
TW		 642 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
643 "no space for new kew");
644
3ec47732 645 priv->stations[sta_id].sta.key.key_flags = key_flags;
0211ddda
EG		 646 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
647 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
648
133636de 649 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
0211ddda
EG		 650
651 spin_unlock_irqrestore(&priv->sta_lock, flags);
652
653 return ret;
654}
7480513f
EG		 655
656static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
657 struct ieee80211_key_conf *keyconf,
658 u8 sta_id)
659{
660 unsigned long flags;
661 __le16 key_flags = 0;
40a9a829 662 int ret;
7480513f
EG		 663
664 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
665 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
666 key_flags &= ~STA_KEY_FLG_INVALID;
667
5425e490 668 if (sta_id == priv->hw_params.bcast_sta_id)
7480513f
EG		 669 key_flags |= STA_KEY_MULTICAST_MSK;
670
671 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7480513f
EG		 672
673 spin_lock_irqsave(&priv->sta_lock, flags);
674 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
675 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
676
677 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
678 keyconf->keylen);
679
680 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
681 keyconf->keylen);
682
3ec47732
EG		 683 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
684 == STA_KEY_FLG_NO_ENC)
685 priv->stations[sta_id].sta.key.key_offset =
686 iwl_get_free_ucode_key_index(priv);
687 /* else, we are overriding an existing key => no need to allocated room
688 * in uCode. */
689
40a9a829
TW		 690 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
691 "no space for new kew");
692
7480513f
EG		 693 priv->stations[sta_id].sta.key.key_flags = key_flags;
694 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
695 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
696
40a9a829
TW		 697 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
698
7480513f
EG		 699 spin_unlock_irqrestore(&priv->sta_lock, flags);
700
40a9a829 701 return ret;
7480513f
EG		 702}
703
704static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
705 struct ieee80211_key_conf *keyconf,
706 u8 sta_id)
707{
708 unsigned long flags;
709 int ret = 0;
710
711 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
712 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
7480513f
EG		 713
714 spin_lock_irqsave(&priv->sta_lock, flags);
715
716 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
7480513f 717 priv->stations[sta_id].keyinfo.keylen = 16;
3ec47732
EG		 718
719 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
720 == STA_KEY_FLG_NO_ENC)
721 priv->stations[sta_id].sta.key.key_offset =
77bab602 722 iwl_get_free_ucode_key_index(priv);
3ec47732
EG		 723 /* else, we are overriding an existing key => no need to allocated room
724 * in uCode. */
7480513f 725
40a9a829
TW		 726 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
727 "no space for new kew");
728
7480513f
EG		 729 /* This copy is acutally not needed: we get the key with each TX */
730 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
731
732 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
733
734 spin_unlock_irqrestore(&priv->sta_lock, flags);
735
736 return ret;
737}
738
9f58671e
TW		 739void iwl_update_tkip_key(struct iwl_priv *priv,
740 struct ieee80211_key_conf *keyconf,
741 const u8 *addr, u32 iv32, u16 *phase1key)
742{
743 u8 sta_id = IWL_INVALID_STATION;
744 unsigned long flags;
745 __le16 key_flags = 0;
746 int i;
747 DECLARE_MAC_BUF(mac);
748
749 sta_id = iwl_find_station(priv, addr);
750 if (sta_id == IWL_INVALID_STATION) {
751 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
752 addr);
753 return;
754 }
755
756 if (iwl_scan_cancel(priv)) {
757 /* cancel scan failed, just live w/ bad key and rely
758 briefly on SW decryption */
759 return;
760 }
761
762 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
763 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
764 key_flags &= ~STA_KEY_FLG_INVALID;
765
766 if (sta_id == priv->hw_params.bcast_sta_id)
767 key_flags |= STA_KEY_MULTICAST_MSK;
768
769 spin_lock_irqsave(&priv->sta_lock, flags);
770
771 priv->stations[sta_id].sta.key.key_flags = key_flags;
772 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
773
774 for (i = 0; i < 5; i++)
775 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
776 cpu_to_le16(phase1key[i]);
777
778 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
779 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
780
781 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
782
783 spin_unlock_irqrestore(&priv->sta_lock, flags);
784
785}
786EXPORT_SYMBOL(iwl_update_tkip_key);
787
3ec47732
EG		 788int iwl_remove_dynamic_key(struct iwl_priv *priv,
789 struct ieee80211_key_conf *keyconf,
790 u8 sta_id)
7480513f
EG		 791{
792 unsigned long flags;
3ec47732
EG		 793 int ret = 0;
794 u16 key_flags;
795 u8 keyidx;
7480513f 796
ccc038ab 797 priv->key_mapping_key--;
7480513f
EG		 798
799 spin_lock_irqsave(&priv->sta_lock, flags);
3ec47732
EG		 800 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
801 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
802
4564ce8b
EG		 803 IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n",
804 keyconf->keyidx, sta_id);
805
3ec47732
EG		 806 if (keyconf->keyidx != keyidx) {
807 /* We need to remove a key with index different that the one
808 * in the uCode. This means that the key we need to remove has
809 * been replaced by another one with different index.
810 * Don't do anything and return ok
811 */
812 spin_unlock_irqrestore(&priv->sta_lock, flags);
813 return 0;
814 }
815
40a9a829
TW		 816 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
817 IWL_WARNING("Removing wrong key %d 0x%x\n",
818 keyconf->keyidx, key_flags);
819 spin_unlock_irqrestore(&priv->sta_lock, flags);
820 return 0;
821 }
822
7480513f
EG		 823 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
824 &priv->ucode_key_table))
825 IWL_ERROR("index %d not used in uCode key table.\n",
826 priv->stations[sta_id].sta.key.key_offset);
827 memset(&priv->stations[sta_id].keyinfo, 0,
6def9761 828 sizeof(struct iwl_hw_key));
7480513f
EG		 829 memset(&priv->stations[sta_id].sta.key, 0,
830 sizeof(struct iwl4965_keyinfo));
3ec47732
EG		 831 priv->stations[sta_id].sta.key.key_flags =
832 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
833 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
7480513f
EG		 834 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
835 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7480513f 836
ccc038ab 837 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3ec47732
EG		 838 spin_unlock_irqrestore(&priv->sta_lock, flags);
839 return ret;
7480513f 840}
27aaba0c 841EXPORT_SYMBOL(iwl_remove_dynamic_key);
7480513f
EG		 842
843int iwl_set_dynamic_key(struct iwl_priv *priv,
ccc038ab 844 struct ieee80211_key_conf *keyconf, u8 sta_id)
7480513f
EG		 845{
846 int ret;
847
ccc038ab
EG		 848 priv->key_mapping_key++;
849 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
7480513f 850
ccc038ab 851 switch (keyconf->alg) {
7480513f 852 case ALG_CCMP:
ccc038ab 853 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 854 break;
855 case ALG_TKIP:
ccc038ab 856 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 857 break;
858 case ALG_WEP:
ccc038ab 859 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 860 break;
861 default:
ccc038ab 862 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
7480513f
EG		 863 ret = -EINVAL;
864 }
865
4564ce8b
EG		 866 IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
867 keyconf->alg, keyconf->keylen, keyconf->keyidx,
868 sta_id, ret);
869
7480513f
EG		 870 return ret;
871}
27aaba0c 872EXPORT_SYMBOL(iwl_set_dynamic_key);
7480513f 873
66c73db7
TW		 874#ifdef CONFIG_IWLWIFI_DEBUG
875static void iwl_dump_lq_cmd(struct iwl_priv *priv,
876 struct iwl_link_quality_cmd *lq)
877{
878 int i;
879 IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
a96a27f9 880 IWL_DEBUG_RATE("lq ant 0x%X 0x%X\n",
66c73db7
TW		 881 lq->general_params.single_stream_ant_msk,
882 lq->general_params.dual_stream_ant_msk);
883
884 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
885 IWL_DEBUG_RATE("lq index %d 0x%X\n",
886 i, lq->rs_table[i].rate_n_flags);
887}
888#else
889static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
890 struct iwl_link_quality_cmd *lq)
891{
892}
893#endif
894
895int iwl_send_lq_cmd(struct iwl_priv *priv,
896 struct iwl_link_quality_cmd *lq, u8 flags)
897{
898 struct iwl_host_cmd cmd = {
899 .id = REPLY_TX_LINK_QUALITY_CMD,
900 .len = sizeof(struct iwl_link_quality_cmd),
901 .meta.flags = flags,
902 .data = lq,
903 };
904
905 if ((lq->sta_id == 0xFF) &&
05c914fe 906 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
66c73db7
TW		 907 return -EINVAL;
908
909 if (lq->sta_id == 0xFF)
910 lq->sta_id = IWL_AP_ID;
911
3ac7f146 912 iwl_dump_lq_cmd(priv, lq);
66c73db7 913
36e1f16e 914 if (iwl_is_associated(priv) && priv->assoc_station_added)
66c73db7
TW		 915 return iwl_send_cmd(priv, &cmd);
916
917 return 0;
918}
919EXPORT_SYMBOL(iwl_send_lq_cmd);
920
4f40e4d9
TW		 921/**
922 * iwl_sta_init_lq - Initialize a station's hardware rate table
923 *
924 * The uCode's station table contains a table of fallback rates
925 * for automatic fallback during transmission.
926 *
927 * NOTE: This sets up a default set of values. These will be replaced later
e227ceac 928 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
4f40e4d9
TW		 929 * rc80211_simple.
930 *
931 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
932 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
933 * which requires station table entry to exist).
934 */
935static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, int is_ap)
936{
937 int i, r;
938 struct iwl_link_quality_cmd link_cmd = {
939 .reserved1 = 0,
940 };
5d664a41 941 u32 rate_flags;
4f40e4d9
TW		 942
943 /* Set up the rate scaling to start at selected rate, fall back
944 * all the way down to 1M in IEEE order, and then spin on 1M */
945 if (is_ap)
946 r = IWL_RATE_54M_INDEX;
947 else if (priv->band == IEEE80211_BAND_5GHZ)
948 r = IWL_RATE_6M_INDEX;
949 else
950 r = IWL_RATE_1M_INDEX;
951
952 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
953 rate_flags = 0;
954 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
955 rate_flags |= RATE_MCS_CCK_MSK;
956
5d664a41
TW		 957 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
958 RATE_MCS_ANT_POS;
4f40e4d9
TW		 959
960 link_cmd.rs_table[i].rate_n_flags =
e7d326ac 961 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
eb4779c4 962 r = iwl_get_prev_ieee_rate(r);
4f40e4d9
TW		 963 }
964
5d664a41
TW		 965 link_cmd.general_params.single_stream_ant_msk =
966 first_antenna(priv->hw_params.valid_tx_ant);
4f40e4d9
TW		 967 link_cmd.general_params.dual_stream_ant_msk = 3;
968 link_cmd.agg_params.agg_dis_start_th = 3;
969 link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
970
971 /* Update the rate scaling for control frame Tx to AP */
972 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
973
974 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
975 sizeof(link_cmd), &link_cmd, NULL);
976}
24e5c401 977
4f40e4d9
TW		 978/**
979 * iwl_rxon_add_station - add station into station table.
980 *
981 * there is only one AP station with id= IWL_AP_ID
a96a27f9 982 * NOTE: mutex must be held before calling this function
4f40e4d9
TW		 983 */
984int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
985{
ae5eb026
JB		 986 struct ieee80211_sta *sta;
987 struct ieee80211_sta_ht_cap ht_config;
988 struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
4f40e4d9
TW		 989 u8 sta_id;
990
991 /* Add station to device's station table */
ae5eb026
JB		 992
993 /*
994 * XXX: This check is definitely not correct, if we're an AP
995 * it'll always be false which is not what we want, but
996 * it doesn't look like iwlagn is prepared to be an HT
997 * AP anyway.
998 */
999 if (priv->current_ht_config.is_ht) {
1000 rcu_read_lock();
1001 sta = ieee80211_find_sta(priv->hw, addr);
1002 if (sta) {
1003 memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
1004 cur_ht_config = &ht_config;
1005 }
1006 rcu_read_unlock();
1007 }
1008
1009 sta_id = iwl_add_station_flags(priv, addr, is_ap,
1010 0, cur_ht_config);
4f40e4d9
TW		 1011
1012 /* Set up default rate scaling table in device's station table */
1013 iwl_sta_init_lq(priv, addr, is_ap);
1014
1015 return sta_id;
1016}
1017EXPORT_SYMBOL(iwl_rxon_add_station);
1018
4f40e4d9
TW		 1019/**
1020 * iwl_get_sta_id - Find station's index within station table
1021 *
1022 * If new IBSS station, create new entry in station table
1023 */
1024int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1025{
1026 int sta_id;
1027 u16 fc = le16_to_cpu(hdr->frame_control);
4f40e4d9
TW		 1028
1029 /* If this frame is broadcast or management, use broadcast station id */
1030 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1031 is_multicast_ether_addr(hdr->addr1))
1032 return priv->hw_params.bcast_sta_id;
1033
1034 switch (priv->iw_mode) {
1035
1036 /* If we are a client station in a BSS network, use the special
1037 * AP station entry (that's the only station we communicate with) */
05c914fe 1038 case NL80211_IFTYPE_STATION:
4f40e4d9
TW		 1039 return IWL_AP_ID;
1040
1041 /* If we are an AP, then find the station, or use BCAST */
05c914fe 1042 case NL80211_IFTYPE_AP:
4f40e4d9
TW		 1043 sta_id = iwl_find_station(priv, hdr->addr1);
1044 if (sta_id != IWL_INVALID_STATION)
1045 return sta_id;
1046 return priv->hw_params.bcast_sta_id;
1047
1048 /* If this frame is going out to an IBSS network, find the station,
1049 * or create a new station table entry */
05c914fe 1050 case NL80211_IFTYPE_ADHOC:
4f40e4d9
TW		 1051 sta_id = iwl_find_station(priv, hdr->addr1);
1052 if (sta_id != IWL_INVALID_STATION)
1053 return sta_id;
1054
1055 /* Create new station table entry */
1056 sta_id = iwl_add_station_flags(priv, hdr->addr1,
1057 0, CMD_ASYNC, NULL);
1058
1059 if (sta_id != IWL_INVALID_STATION)
1060 return sta_id;
1061
e174961c 1062 IWL_DEBUG_DROP("Station %pM not in station map. "
4f40e4d9 1063 "Defaulting to broadcast...\n",
e174961c 1064 hdr->addr1);
4f40e4d9
TW		 1065 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1066 return priv->hw_params.bcast_sta_id;
1067
d10c4ec8
SG		 1068 /* If we are in monitor mode, use BCAST. This is required for
1069 * packet injection. */
05c914fe 1070 case NL80211_IFTYPE_MONITOR:
d10c4ec8
SG		 1071 return priv->hw_params.bcast_sta_id;
1072
4f40e4d9 1073 default:
6f147926 1074 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
4f40e4d9
TW		 1075 return priv->hw_params.bcast_sta_id;
1076 }
1077}
1078EXPORT_SYMBOL(iwl_get_sta_id);
1079
5083e563 1080/**
9f58671e 1081 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
5083e563 1082 */
9f58671e 1083void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
5083e563
TW		 1084{
1085 unsigned long flags;
1086
1087 /* Remove "disable" flag, to enable Tx for this TID */
1088 spin_lock_irqsave(&priv->sta_lock, flags);
1089 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1090 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1091 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1092 spin_unlock_irqrestore(&priv->sta_lock, flags);
1093
1094 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1095}
9f58671e
TW		 1096EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1097
1098int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1099 const u8 *addr, int tid, u16 ssn)
1100{
1101 unsigned long flags;
1102 int sta_id;
1103
1104 sta_id = iwl_find_station(priv, addr);
1105 if (sta_id == IWL_INVALID_STATION)
1106 return -ENXIO;
1107
1108 spin_lock_irqsave(&priv->sta_lock, flags);
1109 priv->stations[sta_id].sta.station_flags_msk = 0;
1110 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1111 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1112 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1113 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1114 spin_unlock_irqrestore(&priv->sta_lock, flags);
1115
1116 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1117 CMD_ASYNC);
1118}
1119EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1120
1121int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1122{
1123 unsigned long flags;
1124 int sta_id;
1125
1126 sta_id = iwl_find_station(priv, addr);
1127 if (sta_id == IWL_INVALID_STATION)
1128 return -ENXIO;
1129
1130 spin_lock_irqsave(&priv->sta_lock, flags);
1131 priv->stations[sta_id].sta.station_flags_msk = 0;
1132 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1133 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1134 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1135 spin_unlock_irqrestore(&priv->sta_lock, flags);
1136
1137 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1138 CMD_ASYNC);
1139}
1140EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1141
1142static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1143{
1144 unsigned long flags;
1145
1146 spin_lock_irqsave(&priv->sta_lock, flags);
1147 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1148 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1149 priv->stations[sta_id].sta.sta.modify_mask = 0;
1150 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1151 spin_unlock_irqrestore(&priv->sta_lock, flags);
1152
1153 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1154}
1155
1156void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
1157{
1158 /* FIXME: need locking over ps_status ??? */
1159 u8 sta_id = iwl_find_station(priv, addr);
1160
1161 if (sta_id != IWL_INVALID_STATION) {
1162 u8 sta_awake = priv->stations[sta_id].
1163 ps_status == STA_PS_STATUS_WAKE;
1164
1165 if (sta_awake && ps_bit)
1166 priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
1167 else if (!sta_awake && !ps_bit) {
1168 iwl_sta_modify_ps_wake(priv, sta_id);
1169 priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;
1170 }
1171 }
1172}
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Linux kernel - Deliverables
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