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path: root/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-sta.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn-sta.c716
1 files changed, 716 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-sta.c b/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
new file mode 100644
index 000000000000..35a30d2e0734
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
@@ -0,0 +1,716 @@
1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2010 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:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30#include <net/mac80211.h>
31
32#include "iwl-dev.h"
33#include "iwl-core.h"
34#include "iwl-sta.h"
35#include "iwl-agn.h"
36
37static struct iwl_link_quality_cmd *
38iwl_sta_alloc_lq(struct iwl_priv *priv, u8 sta_id)
39{
40 int i, r;
41 struct iwl_link_quality_cmd *link_cmd;
42 u32 rate_flags = 0;
43 __le32 rate_n_flags;
44
45 link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
46 if (!link_cmd) {
47 IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
48 return NULL;
49 }
50 /* Set up the rate scaling to start at selected rate, fall back
51 * all the way down to 1M in IEEE order, and then spin on 1M */
52 if (priv->band == IEEE80211_BAND_5GHZ)
53 r = IWL_RATE_6M_INDEX;
54 else
55 r = IWL_RATE_1M_INDEX;
56
57 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
58 rate_flags |= RATE_MCS_CCK_MSK;
59
60 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
61 RATE_MCS_ANT_POS;
62 rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
63 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
64 link_cmd->rs_table[i].rate_n_flags = rate_n_flags;
65
66 link_cmd->general_params.single_stream_ant_msk =
67 first_antenna(priv->hw_params.valid_tx_ant);
68
69 link_cmd->general_params.dual_stream_ant_msk =
70 priv->hw_params.valid_tx_ant &
71 ~first_antenna(priv->hw_params.valid_tx_ant);
72 if (!link_cmd->general_params.dual_stream_ant_msk) {
73 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
74 } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) {
75 link_cmd->general_params.dual_stream_ant_msk =
76 priv->hw_params.valid_tx_ant;
77 }
78
79 link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
80 link_cmd->agg_params.agg_time_limit =
81 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
82
83 link_cmd->sta_id = sta_id;
84
85 return link_cmd;
86}
87
88/*
89 * iwlagn_add_bssid_station - Add the special IBSS BSSID station
90 *
91 * Function sleeps.
92 */
93int iwlagn_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
94 const u8 *addr, u8 *sta_id_r)
95{
96 int ret;
97 u8 sta_id;
98 struct iwl_link_quality_cmd *link_cmd;
99 unsigned long flags;
100
101 if (sta_id_r)
102 *sta_id_r = IWL_INVALID_STATION;
103
104 ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
105 if (ret) {
106 IWL_ERR(priv, "Unable to add station %pM\n", addr);
107 return ret;
108 }
109
110 if (sta_id_r)
111 *sta_id_r = sta_id;
112
113 spin_lock_irqsave(&priv->sta_lock, flags);
114 priv->stations[sta_id].used |= IWL_STA_LOCAL;
115 spin_unlock_irqrestore(&priv->sta_lock, flags);
116
117 /* Set up default rate scaling table in device's station table */
118 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
119 if (!link_cmd) {
120 IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n",
121 addr);
122 return -ENOMEM;
123 }
124
125 ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true);
126 if (ret)
127 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
128
129 spin_lock_irqsave(&priv->sta_lock, flags);
130 priv->stations[sta_id].lq = link_cmd;
131 spin_unlock_irqrestore(&priv->sta_lock, flags);
132
133 return 0;
134}
135
136static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv,
137 struct iwl_rxon_context *ctx,
138 bool send_if_empty)
139{
140 int i, not_empty = 0;
141 u8 buff[sizeof(struct iwl_wep_cmd) +
142 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
143 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
144 size_t cmd_size = sizeof(struct iwl_wep_cmd);
145 struct iwl_host_cmd cmd = {
146 .id = ctx->wep_key_cmd,
147 .data = wep_cmd,
148 .flags = CMD_SYNC,
149 };
150
151 might_sleep();
152
153 memset(wep_cmd, 0, cmd_size +
154 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
155
156 for (i = 0; i < WEP_KEYS_MAX ; i++) {
157 wep_cmd->key[i].key_index = i;
158 if (ctx->wep_keys[i].key_size) {
159 wep_cmd->key[i].key_offset = i;
160 not_empty = 1;
161 } else {
162 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
163 }
164
165 wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size;
166 memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key,
167 ctx->wep_keys[i].key_size);
168 }
169
170 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
171 wep_cmd->num_keys = WEP_KEYS_MAX;
172
173 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
174
175 cmd.len = cmd_size;
176
177 if (not_empty || send_if_empty)
178 return iwl_send_cmd(priv, &cmd);
179 else
180 return 0;
181}
182
183int iwl_restore_default_wep_keys(struct iwl_priv *priv,
184 struct iwl_rxon_context *ctx)
185{
186 lockdep_assert_held(&priv->mutex);
187
188 return iwl_send_static_wepkey_cmd(priv, ctx, false);
189}
190
191int iwl_remove_default_wep_key(struct iwl_priv *priv,
192 struct iwl_rxon_context *ctx,
193 struct ieee80211_key_conf *keyconf)
194{
195 int ret;
196
197 lockdep_assert_held(&priv->mutex);
198
199 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
200 keyconf->keyidx);
201
202 memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0]));
203 if (iwl_is_rfkill(priv)) {
204 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
205 /* but keys in device are clear anyway so return success */
206 return 0;
207 }
208 ret = iwl_send_static_wepkey_cmd(priv, ctx, 1);
209 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
210 keyconf->keyidx, ret);
211
212 return ret;
213}
214
215int iwl_set_default_wep_key(struct iwl_priv *priv,
216 struct iwl_rxon_context *ctx,
217 struct ieee80211_key_conf *keyconf)
218{
219 int ret;
220
221 lockdep_assert_held(&priv->mutex);
222
223 if (keyconf->keylen != WEP_KEY_LEN_128 &&
224 keyconf->keylen != WEP_KEY_LEN_64) {
225 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
226 return -EINVAL;
227 }
228
229 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
230 keyconf->hw_key_idx = HW_KEY_DEFAULT;
231 priv->stations[ctx->ap_sta_id].keyinfo.cipher = keyconf->cipher;
232
233 ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
234 memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key,
235 keyconf->keylen);
236
237 ret = iwl_send_static_wepkey_cmd(priv, ctx, false);
238 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
239 keyconf->keylen, keyconf->keyidx, ret);
240
241 return ret;
242}
243
244static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
245 struct iwl_rxon_context *ctx,
246 struct ieee80211_key_conf *keyconf,
247 u8 sta_id)
248{
249 unsigned long flags;
250 __le16 key_flags = 0;
251 struct iwl_addsta_cmd sta_cmd;
252
253 lockdep_assert_held(&priv->mutex);
254
255 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
256
257 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
258 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
259 key_flags &= ~STA_KEY_FLG_INVALID;
260
261 if (keyconf->keylen == WEP_KEY_LEN_128)
262 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
263
264 if (sta_id == ctx->bcast_sta_id)
265 key_flags |= STA_KEY_MULTICAST_MSK;
266
267 spin_lock_irqsave(&priv->sta_lock, flags);
268
269 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
270 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
271 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
272
273 memcpy(priv->stations[sta_id].keyinfo.key,
274 keyconf->key, keyconf->keylen);
275
276 memcpy(&priv->stations[sta_id].sta.key.key[3],
277 keyconf->key, keyconf->keylen);
278
279 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
280 == STA_KEY_FLG_NO_ENC)
281 priv->stations[sta_id].sta.key.key_offset =
282 iwl_get_free_ucode_key_index(priv);
283 /* else, we are overriding an existing key => no need to allocated room
284 * in uCode. */
285
286 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
287 "no space for a new key");
288
289 priv->stations[sta_id].sta.key.key_flags = key_flags;
290 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
291 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
292
293 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
294 spin_unlock_irqrestore(&priv->sta_lock, flags);
295
296 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
297}
298
299static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
300 struct iwl_rxon_context *ctx,
301 struct ieee80211_key_conf *keyconf,
302 u8 sta_id)
303{
304 unsigned long flags;
305 __le16 key_flags = 0;
306 struct iwl_addsta_cmd sta_cmd;
307
308 lockdep_assert_held(&priv->mutex);
309
310 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
311 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
312 key_flags &= ~STA_KEY_FLG_INVALID;
313
314 if (sta_id == ctx->bcast_sta_id)
315 key_flags |= STA_KEY_MULTICAST_MSK;
316
317 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
318
319 spin_lock_irqsave(&priv->sta_lock, flags);
320 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
321 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
322
323 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
324 keyconf->keylen);
325
326 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
327 keyconf->keylen);
328
329 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
330 == STA_KEY_FLG_NO_ENC)
331 priv->stations[sta_id].sta.key.key_offset =
332 iwl_get_free_ucode_key_index(priv);
333 /* else, we are overriding an existing key => no need to allocated room
334 * in uCode. */
335
336 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
337 "no space for a new key");
338
339 priv->stations[sta_id].sta.key.key_flags = key_flags;
340 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
341 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
342
343 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
344 spin_unlock_irqrestore(&priv->sta_lock, flags);
345
346 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
347}
348
349static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
350 struct iwl_rxon_context *ctx,
351 struct ieee80211_key_conf *keyconf,
352 u8 sta_id)
353{
354 unsigned long flags;
355 int ret = 0;
356 __le16 key_flags = 0;
357
358 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
359 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
360 key_flags &= ~STA_KEY_FLG_INVALID;
361
362 if (sta_id == ctx->bcast_sta_id)
363 key_flags |= STA_KEY_MULTICAST_MSK;
364
365 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
366 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
367
368 spin_lock_irqsave(&priv->sta_lock, flags);
369
370 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
371 priv->stations[sta_id].keyinfo.keylen = 16;
372
373 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
374 == STA_KEY_FLG_NO_ENC)
375 priv->stations[sta_id].sta.key.key_offset =
376 iwl_get_free_ucode_key_index(priv);
377 /* else, we are overriding an existing key => no need to allocated room
378 * in uCode. */
379
380 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
381 "no space for a new key");
382
383 priv->stations[sta_id].sta.key.key_flags = key_flags;
384
385
386 /* This copy is acutally not needed: we get the key with each TX */
387 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
388
389 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
390
391 spin_unlock_irqrestore(&priv->sta_lock, flags);
392
393 return ret;
394}
395
396void iwl_update_tkip_key(struct iwl_priv *priv,
397 struct iwl_rxon_context *ctx,
398 struct ieee80211_key_conf *keyconf,
399 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
400{
401 u8 sta_id;
402 unsigned long flags;
403 int i;
404
405 if (iwl_scan_cancel(priv)) {
406 /* cancel scan failed, just live w/ bad key and rely
407 briefly on SW decryption */
408 return;
409 }
410
411 sta_id = iwl_sta_id_or_broadcast(priv, ctx, sta);
412 if (sta_id == IWL_INVALID_STATION)
413 return;
414
415 spin_lock_irqsave(&priv->sta_lock, flags);
416
417 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
418
419 for (i = 0; i < 5; i++)
420 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
421 cpu_to_le16(phase1key[i]);
422
423 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
424 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
425
426 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
427
428 spin_unlock_irqrestore(&priv->sta_lock, flags);
429
430}
431
432int iwl_remove_dynamic_key(struct iwl_priv *priv,
433 struct iwl_rxon_context *ctx,
434 struct ieee80211_key_conf *keyconf,
435 u8 sta_id)
436{
437 unsigned long flags;
438 u16 key_flags;
439 u8 keyidx;
440 struct iwl_addsta_cmd sta_cmd;
441
442 lockdep_assert_held(&priv->mutex);
443
444 ctx->key_mapping_keys--;
445
446 spin_lock_irqsave(&priv->sta_lock, flags);
447 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
448 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
449
450 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
451 keyconf->keyidx, sta_id);
452
453 if (keyconf->keyidx != keyidx) {
454 /* We need to remove a key with index different that the one
455 * in the uCode. This means that the key we need to remove has
456 * been replaced by another one with different index.
457 * Don't do anything and return ok
458 */
459 spin_unlock_irqrestore(&priv->sta_lock, flags);
460 return 0;
461 }
462
463 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
464 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
465 keyconf->keyidx, key_flags);
466 spin_unlock_irqrestore(&priv->sta_lock, flags);
467 return 0;
468 }
469
470 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
471 &priv->ucode_key_table))
472 IWL_ERR(priv, "index %d not used in uCode key table.\n",
473 priv->stations[sta_id].sta.key.key_offset);
474 memset(&priv->stations[sta_id].keyinfo, 0,
475 sizeof(struct iwl_hw_key));
476 memset(&priv->stations[sta_id].sta.key, 0,
477 sizeof(struct iwl4965_keyinfo));
478 priv->stations[sta_id].sta.key.key_flags =
479 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
480 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
481 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
482 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
483
484 if (iwl_is_rfkill(priv)) {
485 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n");
486 spin_unlock_irqrestore(&priv->sta_lock, flags);
487 return 0;
488 }
489 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
490 spin_unlock_irqrestore(&priv->sta_lock, flags);
491
492 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
493}
494
495int iwl_set_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
496 struct ieee80211_key_conf *keyconf, u8 sta_id)
497{
498 int ret;
499
500 lockdep_assert_held(&priv->mutex);
501
502 ctx->key_mapping_keys++;
503 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
504
505 switch (keyconf->cipher) {
506 case WLAN_CIPHER_SUITE_CCMP:
507 ret = iwl_set_ccmp_dynamic_key_info(priv, ctx, keyconf, sta_id);
508 break;
509 case WLAN_CIPHER_SUITE_TKIP:
510 ret = iwl_set_tkip_dynamic_key_info(priv, ctx, keyconf, sta_id);
511 break;
512 case WLAN_CIPHER_SUITE_WEP40:
513 case WLAN_CIPHER_SUITE_WEP104:
514 ret = iwl_set_wep_dynamic_key_info(priv, ctx, keyconf, sta_id);
515 break;
516 default:
517 IWL_ERR(priv,
518 "Unknown alg: %s cipher = %x\n", __func__,
519 keyconf->cipher);
520 ret = -EINVAL;
521 }
522
523 IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%d ret=%d\n",
524 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
525 sta_id, ret);
526
527 return ret;
528}
529
530/**
531 * iwlagn_alloc_bcast_station - add broadcast station into driver's station table.
532 *
533 * This adds the broadcast station into the driver's station table
534 * and marks it driver active, so that it will be restored to the
535 * device at the next best time.
536 */
537int iwlagn_alloc_bcast_station(struct iwl_priv *priv,
538 struct iwl_rxon_context *ctx)
539{
540 struct iwl_link_quality_cmd *link_cmd;
541 unsigned long flags;
542 u8 sta_id;
543
544 spin_lock_irqsave(&priv->sta_lock, flags);
545 sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL);
546 if (sta_id == IWL_INVALID_STATION) {
547 IWL_ERR(priv, "Unable to prepare broadcast station\n");
548 spin_unlock_irqrestore(&priv->sta_lock, flags);
549
550 return -EINVAL;
551 }
552
553 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
554 priv->stations[sta_id].used |= IWL_STA_BCAST;
555 spin_unlock_irqrestore(&priv->sta_lock, flags);
556
557 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
558 if (!link_cmd) {
559 IWL_ERR(priv,
560 "Unable to initialize rate scaling for bcast station.\n");
561 return -ENOMEM;
562 }
563
564 spin_lock_irqsave(&priv->sta_lock, flags);
565 priv->stations[sta_id].lq = link_cmd;
566 spin_unlock_irqrestore(&priv->sta_lock, flags);
567
568 return 0;
569}
570
571/**
572 * iwl_update_bcast_station - update broadcast station's LQ command
573 *
574 * Only used by iwlagn. Placed here to have all bcast station management
575 * code together.
576 */
577static int iwl_update_bcast_station(struct iwl_priv *priv,
578 struct iwl_rxon_context *ctx)
579{
580 unsigned long flags;
581 struct iwl_link_quality_cmd *link_cmd;
582 u8 sta_id = ctx->bcast_sta_id;
583
584 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
585 if (!link_cmd) {
586 IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n");
587 return -ENOMEM;
588 }
589
590 spin_lock_irqsave(&priv->sta_lock, flags);
591 if (priv->stations[sta_id].lq)
592 kfree(priv->stations[sta_id].lq);
593 else
594 IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n");
595 priv->stations[sta_id].lq = link_cmd;
596 spin_unlock_irqrestore(&priv->sta_lock, flags);
597
598 return 0;
599}
600
601int iwl_update_bcast_stations(struct iwl_priv *priv)
602{
603 struct iwl_rxon_context *ctx;
604 int ret = 0;
605
606 for_each_context(priv, ctx) {
607 ret = iwl_update_bcast_station(priv, ctx);
608 if (ret)
609 break;
610 }
611
612 return ret;
613}
614
615/**
616 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
617 */
618int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
619{
620 unsigned long flags;
621 struct iwl_addsta_cmd sta_cmd;
622
623 lockdep_assert_held(&priv->mutex);
624
625 /* Remove "disable" flag, to enable Tx for this TID */
626 spin_lock_irqsave(&priv->sta_lock, flags);
627 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
628 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
629 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
630 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
631 spin_unlock_irqrestore(&priv->sta_lock, flags);
632
633 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
634}
635
636int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
637 int tid, u16 ssn)
638{
639 unsigned long flags;
640 int sta_id;
641 struct iwl_addsta_cmd sta_cmd;
642
643 lockdep_assert_held(&priv->mutex);
644
645 sta_id = iwl_sta_id(sta);
646 if (sta_id == IWL_INVALID_STATION)
647 return -ENXIO;
648
649 spin_lock_irqsave(&priv->sta_lock, flags);
650 priv->stations[sta_id].sta.station_flags_msk = 0;
651 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
652 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
653 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
654 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
655 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
656 spin_unlock_irqrestore(&priv->sta_lock, flags);
657
658 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
659}
660
661int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
662 int tid)
663{
664 unsigned long flags;
665 int sta_id;
666 struct iwl_addsta_cmd sta_cmd;
667
668 lockdep_assert_held(&priv->mutex);
669
670 sta_id = iwl_sta_id(sta);
671 if (sta_id == IWL_INVALID_STATION) {
672 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
673 return -ENXIO;
674 }
675
676 spin_lock_irqsave(&priv->sta_lock, flags);
677 priv->stations[sta_id].sta.station_flags_msk = 0;
678 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
679 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
680 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
681 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
682 spin_unlock_irqrestore(&priv->sta_lock, flags);
683
684 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
685}
686
687void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
688{
689 unsigned long flags;
690
691 spin_lock_irqsave(&priv->sta_lock, flags);
692 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
693 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
694 priv->stations[sta_id].sta.sta.modify_mask = 0;
695 priv->stations[sta_id].sta.sleep_tx_count = 0;
696 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
697 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
698 spin_unlock_irqrestore(&priv->sta_lock, flags);
699
700}
701
702void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
703{
704 unsigned long flags;
705
706 spin_lock_irqsave(&priv->sta_lock, flags);
707 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
708 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
709 priv->stations[sta_id].sta.sta.modify_mask =
710 STA_MODIFY_SLEEP_TX_COUNT_MSK;
711 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
712 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
713 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
714 spin_unlock_irqrestore(&priv->sta_lock, flags);
715
716}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 11:56:53 -0500