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iwl3945: control rate decrease
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-sta.c
CommitLineData
6974e363
EG		 1/******************************************************************************
2 *
01f8162a 3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
6974e363
EG		 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"
7a999bf0 36
24e5c401
EG		 37#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
38#define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
7a999bf0 39
947b13a7
TW		 40u8 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;
947b13a7 46
05c914fe
JB		 47 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
48 (priv->iw_mode == NL80211_IFTYPE_AP))
947b13a7
TW		 49 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
e1623446 63 IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n",
e174961c 64 addr, priv->num_stations);
947b13a7
TW		 65
66 out:
67 spin_unlock_irqrestore(&priv->sta_lock, flags);
68 return ret;
69}
70EXPORT_SYMBOL(iwl_find_station);
71
be1f3ab6
EG		 72int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
73{
05c914fe 74 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
be1f3ab6
EG		 75 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
24e5c401
EG		 83static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
84{
85 unsigned long flags;
24e5c401
EG		 86
87 spin_lock_irqsave(&priv->sta_lock, flags);
88
17f841cd
SO		 89 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
90 !(priv->stations_39[sta_id].used & IWL_STA_DRIVER_ACTIVE))
15b1687c
WT		 91 IWL_ERR(priv, "ACTIVATE a non DRIVER active station %d\n",
92 sta_id);
24e5c401
EG		 93
94 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
e1623446 95 IWL_DEBUG_ASSOC(priv, "Added STA to Ucode: %pM\n",
e174961c 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) {
15b1687c 110 IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
42132bce
TW		 111 return 1;
112 }
113
114 res = (struct iwl_rx_packet *)skb->data;
115 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
15b1687c 116 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
42132bce
TW		 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 125 default:
e1623446 126 IWL_DEBUG_HC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
42132bce
TW		 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
17f841cd 135int 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) {
15b1687c 160 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
133636de
TW		 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);
e1623446 169 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
133636de
TW		 170 break;
171 default:
172 ret = -EIO;
39aadf8c 173 IWL_WARN(priv, "REPLY_ADD_STA failed\n");
133636de
TW		 174 break;
175 }
176 }
177
178 priv->alloc_rxb_skb--;
179 dev_kfree_skb_any(cmd.meta.u.skb);
180
181 return ret;
182}
17f841cd 183EXPORT_SYMBOL(iwl_send_add_sta);
947b13a7 184
4f40e4d9 185static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
d9fe60de 186 struct ieee80211_sta_ht_cap *sta_ht_inf)
4f40e4d9
TW		 187{
188 __le32 sta_flags;
189 u8 mimo_ps_mode;
190
191 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
192 goto done;
193
00c5ae2f 194 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
4f40e4d9
TW		 195
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) {
00c5ae2f 201 case WLAN_HT_CAP_SM_PS_STATIC:
4f40e4d9
TW		 202 sta_flags |= STA_FLG_MIMO_DIS_MSK;
203 break;
00c5ae2f 204 case WLAN_HT_CAP_SM_PS_DYNAMIC:
4f40e4d9
TW		 205 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
206 break;
00c5ae2f 207 case WLAN_HT_CAP_SM_PS_DISABLED:
4f40e4d9
TW		 208 break;
209 default:
39aadf8c 210 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
4f40e4d9
TW		 211 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}
4f40e4d9
TW		 229
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,
d9fe60de 234 u8 flags, struct ieee80211_sta_ht_cap *ht_info)
4f40e4d9
TW		 235{
236 int i;
24e5c401 237 int sta_id = IWL_INVALID_STATION;
4f40e4d9
TW		 238 struct iwl_station_entry *station;
239 unsigned long flags_spin;
4f40e4d9
TW		 240
241 spin_lock_irqsave(&priv->sta_lock, flags_spin);
242 if (is_ap)
24e5c401 243 sta_id = IWL_AP_ID;
4f40e4d9 244 else if (is_broadcast_ether_addr(addr))
24e5c401 245 sta_id = priv->hw_params.bcast_sta_id;
4f40e4d9
TW		 246 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)) {
24e5c401 250 sta_id = i;
4f40e4d9
TW		 251 break;
252 }
253
254 if (!priv->stations[i].used &&
24e5c401
EG		 255 sta_id == IWL_INVALID_STATION)
256 sta_id = i;
4f40e4d9
TW		 257 }
258
4f40e4d9 259 /* These two conditions have the same outcome, but keep them separate
24e5c401
EG		 260 since they have different meanings */
261 if (unlikely(sta_id == IWL_INVALID_STATION)) {
4f40e4d9 262 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
24e5c401 263 return sta_id;
4f40e4d9
TW		 264 }
265
24e5c401
EG		 266 if (priv->stations[sta_id].used &&
267 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
4f40e4d9 268 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
24e5c401 269 return sta_id;
4f40e4d9
TW		 270 }
271
272
24e5c401
EG		 273 station = &priv->stations[sta_id];
274 station->used = IWL_STA_DRIVER_ACTIVE;
e1623446 275 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
e174961c 276 sta_id, addr);
4f40e4d9
TW		 277 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;
24e5c401 283 station->sta.sta.sta_id = sta_id;
4f40e4d9
TW		 284 station->sta.station_flags = 0;
285
286 /* BCAST station and IBSS stations do not work in HT mode */
24e5c401 287 if (sta_id != priv->hw_params.bcast_sta_id &&
05c914fe 288 priv->iw_mode != NL80211_IFTYPE_ADHOC)
24e5c401 289 iwl_set_ht_add_station(priv, sta_id, ht_info);
4f40e4d9
TW		 290
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);
24e5c401 295 return sta_id;
4f40e4d9
TW		 296
297}
298EXPORT_SYMBOL(iwl_add_station_flags);
299
24e5c401 300static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
7a999bf0
TW		 301{
302 unsigned long flags;
24e5c401
EG		 303 u8 sta_id = iwl_find_station(priv, addr);
304
305 BUG_ON(sta_id == IWL_INVALID_STATION);
306
e1623446 307 IWL_DEBUG_ASSOC(priv, "Removed STA from Ucode: %pM\n", addr);
24e5c401
EG		 308
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)
15b1687c 313 IWL_ERR(priv, "removed non active STA %d\n", sta_id);
24e5c401
EG		 314
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);
7a999bf0
TW		 319}
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;
3257e5d4
TW		 325 struct iwl_rem_sta_cmd *rm_sta =
326 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
327 const char *addr = rm_sta->addr;
7a999bf0
TW		 328
329 if (!skb) {
15b1687c 330 IWL_ERR(priv, "Error: Response NULL in REPLY_REMOVE_STA.\n");
7a999bf0
TW		 331 return 1;
332 }
333
334 res = (struct iwl_rx_packet *)skb->data;
335 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
15b1687c 336 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
7a999bf0
TW		 337 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:
15b1687c 346 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
7a999bf0
TW		 347 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) {
15b1687c 384 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
7a999bf0
TW		 385 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);
e1623446 393 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
7a999bf0
TW		 394 break;
395 default:
396 ret = -EIO;
15b1687c 397 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
7a999bf0
TW		 398 break;
399 }
400 }
401
402 priv->alloc_rxb_skb--;
403 dev_kfree_skb_any(cmd.meta.u.skb);
404
405 return ret;
406}
be1f3ab6 407
7a999bf0
TW		 408/**
409 * iwl_remove_station - Remove driver's knowledge of station.
7a999bf0 410 */
24e5c401 411int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
7a999bf0 412{
24e5c401
EG		 413 int sta_id = IWL_INVALID_STATION;
414 int i, ret = -EINVAL;
7a999bf0
TW		 415 unsigned long flags;
416
417 spin_lock_irqsave(&priv->sta_lock, flags);
418
419 if (is_ap)
24e5c401 420 sta_id = IWL_AP_ID;
7a999bf0 421 else if (is_broadcast_ether_addr(addr))
24e5c401 422 sta_id = priv->hw_params.bcast_sta_id;
7a999bf0
TW		 423 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)) {
24e5c401 428 sta_id = i;
7a999bf0
TW		 429 break;
430 }
431
24e5c401 432 if (unlikely(sta_id == IWL_INVALID_STATION))
7a999bf0
TW		 433 goto out;
434
e1623446 435 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
e174961c 436 sta_id, addr);
24e5c401
EG		 437
438 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
15b1687c 439 IWL_ERR(priv, "Removing %pM but non DRIVER active\n",
e174961c 440 addr);
24e5c401
EG		 441 goto out;
442 }
443
444 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
15b1687c 445 IWL_ERR(priv, "Removing %pM but non UCODE active\n",
e174961c 446 addr);
24e5c401 447 goto out;
7a999bf0
TW		 448 }
449
24e5c401
EG		 450
451 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
452
453 priv->num_stations--;
454
7a999bf0 455 BUG_ON(priv->num_stations < 0);
24e5c401 456
7a999bf0 457 spin_unlock_irqrestore(&priv->sta_lock, flags);
24e5c401
EG		 458
459 ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
460 return ret;
7a999bf0
TW		 461out:
462 spin_unlock_irqrestore(&priv->sta_lock, flags);
24e5c401 463 return ret;
7a999bf0
TW		 464}
465EXPORT_SYMBOL(iwl_remove_station);
24e5c401 466
83dde8c9
WT		 467/**
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;
48676eb3 475 int i;
83dde8c9
WT		 476
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))
15b1687c 482 IWL_ERR(priv, "Couldn't clear the station table\n");
83dde8c9
WT		 483
484 priv->num_stations = 0;
485 memset(priv->stations, 0, sizeof(priv->stations));
486
5e46882e
RC		 487 /* clean ucode key table bit map */
488 priv->ucode_key_table = 0;
489
48676eb3
MA		 490 /* 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
83dde8c9
WT		 496 spin_unlock_irqrestore(&priv->sta_lock, flags);
497}
498EXPORT_SYMBOL(iwl_clear_stations_table);
499
6e21f15c 500int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
80fb47a1
EG		 501{
502 int i;
503
504 for (i = 0; i < STA_KEY_MAX_NUM; i++)
77bab602 505 if (!test_and_set_bit(i, &priv->ucode_key_table))
80fb47a1
EG		 506 return i;
507
40a9a829 508 return WEP_INVALID_OFFSET;
80fb47a1 509}
6e21f15c 510EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
6974e363
EG		 511
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}
27aaba0c 554EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
6974e363
EG		 555
556int iwl_remove_default_wep_key(struct iwl_priv *priv,
80fb47a1 557 struct ieee80211_key_conf *keyconf)
6974e363
EG		 558{
559 int ret;
560 unsigned long flags;
561
562 spin_lock_irqsave(&priv->sta_lock, flags);
80fb47a1
EG		 563
564 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
15b1687c 565 IWL_ERR(priv, "index %d not used in uCode key table.\n",
80fb47a1
EG		 566 keyconf->keyidx);
567
6974e363 568 priv->default_wep_key--;
80fb47a1 569 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
6974e363 570 ret = iwl_send_static_wepkey_cmd(priv, 1);
e1623446 571 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
4564ce8b 572 keyconf->keyidx, ret);
6974e363
EG		 573 spin_unlock_irqrestore(&priv->sta_lock, flags);
574
575 return ret;
576}
27aaba0c 577EXPORT_SYMBOL(iwl_remove_default_wep_key);
6974e363
EG		 578
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
4564ce8b
EG		 585 if (keyconf->keylen != WEP_KEY_LEN_128 &&
586 keyconf->keylen != WEP_KEY_LEN_64) {
e1623446 587 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
4564ce8b
EG		 588 return -EINVAL;
589 }
590
6974e363 591 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
ccc038ab 592 keyconf->hw_key_idx = HW_KEY_DEFAULT;
6974e363
EG		 593 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
594
595 spin_lock_irqsave(&priv->sta_lock, flags);
596 priv->default_wep_key++;
597
80fb47a1 598 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
15b1687c 599 IWL_ERR(priv, "index %d already used in uCode key table.\n",
80fb47a1
EG		 600 keyconf->keyidx);
601
6974e363
EG		 602 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);
e1623446 607 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
4564ce8b 608 keyconf->keylen, keyconf->keyidx, ret);
6974e363
EG		 609 spin_unlock_irqrestore(&priv->sta_lock, flags);
610
611 return ret;
612}
27aaba0c 613EXPORT_SYMBOL(iwl_set_default_wep_key);
6974e363 614
7480513f 615static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
0211ddda
EG		 616 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;
0211ddda
EG		 624
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
5425e490 632 if (sta_id == priv->hw_params.bcast_sta_id)
0211ddda
EG		 633 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
3ec47732
EG		 647 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 =
80fb47a1 650 iwl_get_free_ucode_key_index(priv);
3ec47732
EG		 651 /* else, we are overriding an existing key => no need to allocated room
652 * in uCode. */
0211ddda 653
40a9a829 654 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
e724b8fe 655 "no space for a new key");
40a9a829 656
3ec47732 657 priv->stations[sta_id].sta.key.key_flags = key_flags;
0211ddda
EG		 658 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
659 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
660
133636de 661 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
0211ddda
EG		 662
663 spin_unlock_irqrestore(&priv->sta_lock, flags);
664
665 return ret;
666}
7480513f
EG		 667
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;
40a9a829 674 int ret;
7480513f
EG		 675
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
5425e490 680 if (sta_id == priv->hw_params.bcast_sta_id)
7480513f
EG		 681 key_flags |= STA_KEY_MULTICAST_MSK;
682
683 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7480513f
EG		 684
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
3ec47732
EG		 695 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
40a9a829 702 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
e724b8fe 703 "no space for a new key");
40a9a829 704
7480513f
EG		 705 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
40a9a829
TW		 709 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
710
7480513f
EG		 711 spin_unlock_irqrestore(&priv->sta_lock, flags);
712
40a9a829 713 return ret;
7480513f
EG		 714}
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;
722
723 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
724 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
7480513f
EG		 725
726 spin_lock_irqsave(&priv->sta_lock, flags);
727
728 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
7480513f 729 priv->stations[sta_id].keyinfo.keylen = 16;
3ec47732
EG		 730
731 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
732 == STA_KEY_FLG_NO_ENC)
733 priv->stations[sta_id].sta.key.key_offset =
77bab602 734 iwl_get_free_ucode_key_index(priv);
3ec47732
EG		 735 /* else, we are overriding an existing key => no need to allocated room
736 * in uCode. */
7480513f 737
40a9a829 738 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
e724b8fe 739 "no space for a new key");
40a9a829 740
7480513f
EG		 741 /* This copy is acutally not needed: we get the key with each TX */
742 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
743
744 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
745
746 spin_unlock_irqrestore(&priv->sta_lock, flags);
747
748 return ret;
749}
750
9f58671e
TW		 751void iwl_update_tkip_key(struct iwl_priv *priv,
752 struct ieee80211_key_conf *keyconf,
753 const u8 *addr, u32 iv32, u16 *phase1key)
754{
755 u8 sta_id = IWL_INVALID_STATION;
756 unsigned long flags;
757 __le16 key_flags = 0;
758 int i;
759 DECLARE_MAC_BUF(mac);
760
761 sta_id = iwl_find_station(priv, addr);
762 if (sta_id == IWL_INVALID_STATION) {
e1623446 763 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
9f58671e
TW		 764 addr);
765 return;
766 }
767
768 if (iwl_scan_cancel(priv)) {
769 /* cancel scan failed, just live w/ bad key and rely
770 briefly on SW decryption */
771 return;
772 }
773
774 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
775 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
776 key_flags &= ~STA_KEY_FLG_INVALID;
777
778 if (sta_id == priv->hw_params.bcast_sta_id)
779 key_flags |= STA_KEY_MULTICAST_MSK;
780
781 spin_lock_irqsave(&priv->sta_lock, flags);
782
783 priv->stations[sta_id].sta.key.key_flags = key_flags;
784 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
785
786 for (i = 0; i < 5; i++)
787 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
788 cpu_to_le16(phase1key[i]);
789
790 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
791 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
792
793 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
794
795 spin_unlock_irqrestore(&priv->sta_lock, flags);
796
797}
798EXPORT_SYMBOL(iwl_update_tkip_key);
799
3ec47732
EG		 800int iwl_remove_dynamic_key(struct iwl_priv *priv,
801 struct ieee80211_key_conf *keyconf,
802 u8 sta_id)
7480513f
EG		 803{
804 unsigned long flags;
3ec47732
EG		 805 int ret = 0;
806 u16 key_flags;
807 u8 keyidx;
7480513f 808
ccc038ab 809 priv->key_mapping_key--;
7480513f
EG		 810
811 spin_lock_irqsave(&priv->sta_lock, flags);
3ec47732
EG		 812 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
813 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
814
e1623446 815 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
4564ce8b
EG		 816 keyconf->keyidx, sta_id);
817
3ec47732
EG		 818 if (keyconf->keyidx != keyidx) {
819 /* We need to remove a key with index different that the one
820 * in the uCode. This means that the key we need to remove has
821 * been replaced by another one with different index.
822 * Don't do anything and return ok
823 */
824 spin_unlock_irqrestore(&priv->sta_lock, flags);
825 return 0;
826 }
827
40a9a829 828 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
39aadf8c 829 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
40a9a829
TW		 830 keyconf->keyidx, key_flags);
831 spin_unlock_irqrestore(&priv->sta_lock, flags);
832 return 0;
833 }
834
7480513f
EG		 835 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
836 &priv->ucode_key_table))
15b1687c 837 IWL_ERR(priv, "index %d not used in uCode key table.\n",
7480513f
EG		 838 priv->stations[sta_id].sta.key.key_offset);
839 memset(&priv->stations[sta_id].keyinfo, 0,
6def9761 840 sizeof(struct iwl_hw_key));
7480513f
EG		 841 memset(&priv->stations[sta_id].sta.key, 0,
842 sizeof(struct iwl4965_keyinfo));
3ec47732
EG		 843 priv->stations[sta_id].sta.key.key_flags =
844 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
845 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
7480513f
EG		 846 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
847 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7480513f 848
ccc038ab 849 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3ec47732
EG		 850 spin_unlock_irqrestore(&priv->sta_lock, flags);
851 return ret;
7480513f 852}
27aaba0c 853EXPORT_SYMBOL(iwl_remove_dynamic_key);
7480513f
EG		 854
855int iwl_set_dynamic_key(struct iwl_priv *priv,
ccc038ab 856 struct ieee80211_key_conf *keyconf, u8 sta_id)
7480513f
EG		 857{
858 int ret;
859
ccc038ab
EG		 860 priv->key_mapping_key++;
861 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
7480513f 862
ccc038ab 863 switch (keyconf->alg) {
7480513f 864 case ALG_CCMP:
ccc038ab 865 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 866 break;
867 case ALG_TKIP:
ccc038ab 868 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 869 break;
870 case ALG_WEP:
ccc038ab 871 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 872 break;
873 default:
15b1687c
WT		 874 IWL_ERR(priv,
875 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
7480513f
EG		 876 ret = -EINVAL;
877 }
878
e1623446 879 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
4564ce8b
EG		 880 keyconf->alg, keyconf->keylen, keyconf->keyidx,
881 sta_id, ret);
882
7480513f
EG		 883 return ret;
884}
27aaba0c 885EXPORT_SYMBOL(iwl_set_dynamic_key);
7480513f 886
66c73db7
TW		 887#ifdef CONFIG_IWLWIFI_DEBUG
888static void iwl_dump_lq_cmd(struct iwl_priv *priv,
889 struct iwl_link_quality_cmd *lq)
890{
891 int i;
e1623446
TW		 892 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
893 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
66c73db7
TW		 894 lq->general_params.single_stream_ant_msk,
895 lq->general_params.dual_stream_ant_msk);
896
897 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
e1623446 898 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
66c73db7
TW		 899 i, lq->rs_table[i].rate_n_flags);
900}
901#else
902static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
903 struct iwl_link_quality_cmd *lq)
904{
905}
906#endif
907
908int iwl_send_lq_cmd(struct iwl_priv *priv,
909 struct iwl_link_quality_cmd *lq, u8 flags)
910{
911 struct iwl_host_cmd cmd = {
912 .id = REPLY_TX_LINK_QUALITY_CMD,
913 .len = sizeof(struct iwl_link_quality_cmd),
914 .meta.flags = flags,
915 .data = lq,
916 };
917
918 if ((lq->sta_id == 0xFF) &&
05c914fe 919 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
66c73db7
TW		 920 return -EINVAL;
921
922 if (lq->sta_id == 0xFF)
923 lq->sta_id = IWL_AP_ID;
924
3ac7f146 925 iwl_dump_lq_cmd(priv, lq);
66c73db7 926
36e1f16e 927 if (iwl_is_associated(priv) && priv->assoc_station_added)
66c73db7
TW		 928 return iwl_send_cmd(priv, &cmd);
929
930 return 0;
931}
932EXPORT_SYMBOL(iwl_send_lq_cmd);
933
4f40e4d9
TW		 934/**
935 * iwl_sta_init_lq - Initialize a station's hardware rate table
936 *
937 * The uCode's station table contains a table of fallback rates
938 * for automatic fallback during transmission.
939 *
940 * NOTE: This sets up a default set of values. These will be replaced later
e227ceac 941 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
4f40e4d9
TW		 942 * rc80211_simple.
943 *
944 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
945 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
946 * which requires station table entry to exist).
947 */
948static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, int is_ap)
949{
950 int i, r;
951 struct iwl_link_quality_cmd link_cmd = {
952 .reserved1 = 0,
953 };
5d664a41 954 u32 rate_flags;
4f40e4d9
TW		 955
956 /* Set up the rate scaling to start at selected rate, fall back
957 * all the way down to 1M in IEEE order, and then spin on 1M */
958 if (is_ap)
959 r = IWL_RATE_54M_INDEX;
960 else if (priv->band == IEEE80211_BAND_5GHZ)
961 r = IWL_RATE_6M_INDEX;
962 else
963 r = IWL_RATE_1M_INDEX;
964
965 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
966 rate_flags = 0;
967 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
968 rate_flags |= RATE_MCS_CCK_MSK;
969
5d664a41
TW		 970 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
971 RATE_MCS_ANT_POS;
4f40e4d9
TW		 972
973 link_cmd.rs_table[i].rate_n_flags =
e7d326ac 974 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
eb4779c4 975 r = iwl_get_prev_ieee_rate(r);
4f40e4d9
TW		 976 }
977
5d664a41
TW		 978 link_cmd.general_params.single_stream_ant_msk =
979 first_antenna(priv->hw_params.valid_tx_ant);
4f40e4d9
TW		 980 link_cmd.general_params.dual_stream_ant_msk = 3;
981 link_cmd.agg_params.agg_dis_start_th = 3;
982 link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
983
984 /* Update the rate scaling for control frame Tx to AP */
985 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
986
987 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
988 sizeof(link_cmd), &link_cmd, NULL);
989}
24e5c401 990
4f40e4d9
TW		 991/**
992 * iwl_rxon_add_station - add station into station table.
993 *
994 * there is only one AP station with id= IWL_AP_ID
a96a27f9 995 * NOTE: mutex must be held before calling this function
4f40e4d9
TW		 996 */
997int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
998{
ae5eb026
JB		 999 struct ieee80211_sta *sta;
1000 struct ieee80211_sta_ht_cap ht_config;
1001 struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
4f40e4d9
TW		 1002 u8 sta_id;
1003
1004 /* Add station to device's station table */
ae5eb026
JB		 1005
1006 /*
1007 * XXX: This check is definitely not correct, if we're an AP
1008 * it'll always be false which is not what we want, but
1009 * it doesn't look like iwlagn is prepared to be an HT
1010 * AP anyway.
1011 */
1012 if (priv->current_ht_config.is_ht) {
1013 rcu_read_lock();
1014 sta = ieee80211_find_sta(priv->hw, addr);
1015 if (sta) {
1016 memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
1017 cur_ht_config = &ht_config;
1018 }
1019 rcu_read_unlock();
1020 }
1021
1022 sta_id = iwl_add_station_flags(priv, addr, is_ap,
1023 0, cur_ht_config);
4f40e4d9
TW		 1024
1025 /* Set up default rate scaling table in device's station table */
1026 iwl_sta_init_lq(priv, addr, is_ap);
1027
1028 return sta_id;
1029}
1030EXPORT_SYMBOL(iwl_rxon_add_station);
1031
4f40e4d9
TW		 1032/**
1033 * iwl_get_sta_id - Find station's index within station table
1034 *
1035 * If new IBSS station, create new entry in station table
1036 */
1037int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1038{
1039 int sta_id;
1040 u16 fc = le16_to_cpu(hdr->frame_control);
4f40e4d9
TW		 1041
1042 /* If this frame is broadcast or management, use broadcast station id */
1043 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1044 is_multicast_ether_addr(hdr->addr1))
1045 return priv->hw_params.bcast_sta_id;
1046
1047 switch (priv->iw_mode) {
1048
1049 /* If we are a client station in a BSS network, use the special
1050 * AP station entry (that's the only station we communicate with) */
05c914fe 1051 case NL80211_IFTYPE_STATION:
4f40e4d9
TW		 1052 return IWL_AP_ID;
1053
1054 /* If we are an AP, then find the station, or use BCAST */
05c914fe 1055 case NL80211_IFTYPE_AP:
4f40e4d9
TW		 1056 sta_id = iwl_find_station(priv, hdr->addr1);
1057 if (sta_id != IWL_INVALID_STATION)
1058 return sta_id;
1059 return priv->hw_params.bcast_sta_id;
1060
1061 /* If this frame is going out to an IBSS network, find the station,
1062 * or create a new station table entry */
05c914fe 1063 case NL80211_IFTYPE_ADHOC:
4f40e4d9
TW		 1064 sta_id = iwl_find_station(priv, hdr->addr1);
1065 if (sta_id != IWL_INVALID_STATION)
1066 return sta_id;
1067
1068 /* Create new station table entry */
1069 sta_id = iwl_add_station_flags(priv, hdr->addr1,
1070 0, CMD_ASYNC, NULL);
1071
1072 if (sta_id != IWL_INVALID_STATION)
1073 return sta_id;
1074
e1623446 1075 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
4f40e4d9 1076 "Defaulting to broadcast...\n",
e174961c 1077 hdr->addr1);
4f40e4d9
TW		 1078 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1079 return priv->hw_params.bcast_sta_id;
1080
d10c4ec8
SG		 1081 /* If we are in monitor mode, use BCAST. This is required for
1082 * packet injection. */
05c914fe 1083 case NL80211_IFTYPE_MONITOR:
d10c4ec8
SG		 1084 return priv->hw_params.bcast_sta_id;
1085
4f40e4d9 1086 default:
39aadf8c
WT		 1087 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1088 priv->iw_mode);
4f40e4d9
TW		 1089 return priv->hw_params.bcast_sta_id;
1090 }
1091}
1092EXPORT_SYMBOL(iwl_get_sta_id);
1093
5083e563 1094/**
9f58671e 1095 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
5083e563 1096 */
9f58671e 1097void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
5083e563
TW		 1098{
1099 unsigned long flags;
1100
1101 /* Remove "disable" flag, to enable Tx for this TID */
1102 spin_lock_irqsave(&priv->sta_lock, flags);
1103 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1104 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1105 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1106 spin_unlock_irqrestore(&priv->sta_lock, flags);
1107
1108 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1109}
9f58671e
TW		 1110EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1111
1112int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1113 const u8 *addr, int tid, u16 ssn)
1114{
1115 unsigned long flags;
1116 int sta_id;
1117
1118 sta_id = iwl_find_station(priv, addr);
1119 if (sta_id == IWL_INVALID_STATION)
1120 return -ENXIO;
1121
1122 spin_lock_irqsave(&priv->sta_lock, flags);
1123 priv->stations[sta_id].sta.station_flags_msk = 0;
1124 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1125 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1126 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1127 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1128 spin_unlock_irqrestore(&priv->sta_lock, flags);
1129
1130 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1131 CMD_ASYNC);
1132}
1133EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1134
1135int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1136{
1137 unsigned long flags;
1138 int sta_id;
1139
1140 sta_id = iwl_find_station(priv, addr);
1141 if (sta_id == IWL_INVALID_STATION)
1142 return -ENXIO;
1143
1144 spin_lock_irqsave(&priv->sta_lock, flags);
1145 priv->stations[sta_id].sta.station_flags_msk = 0;
1146 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1147 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1148 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1149 spin_unlock_irqrestore(&priv->sta_lock, flags);
1150
1151 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1152 CMD_ASYNC);
1153}
1154EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1155
1156static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1157{
1158 unsigned long flags;
1159
1160 spin_lock_irqsave(&priv->sta_lock, flags);
1161 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1162 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1163 priv->stations[sta_id].sta.sta.modify_mask = 0;
1164 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1165 spin_unlock_irqrestore(&priv->sta_lock, flags);
1166
1167 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1168}
1169
1170void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
1171{
1172 /* FIXME: need locking over ps_status ??? */
1173 u8 sta_id = iwl_find_station(priv, addr);
1174
1175 if (sta_id != IWL_INVALID_STATION) {
1176 u8 sta_awake = priv->stations[sta_id].
1177 ps_status == STA_PS_STATUS_WAKE;
1178
1179 if (sta_awake && ps_bit)
1180 priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
1181 else if (!sta_awake && !ps_bit) {
1182 iwl_sta_modify_ps_wake(priv, sta_id);
1183 priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;
1184 }
1185 }
1186}
5083e563 1187
Linux kernel - Deliverables
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