Loading...
Note: File does not exist in v5.4.
1/******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 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-4965.h"
36
37static struct iwl_link_quality_cmd *
38iwl4965_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 |= iwl4965_first_antenna(priv->hw_params.valid_tx_ant) <<
61 RATE_MCS_ANT_POS;
62 rate_n_flags = iwl4965_hw_set_rate_n_flags(iwlegacy_rates[r].plcp,
63 rate_flags);
64 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
65 link_cmd->rs_table[i].rate_n_flags = rate_n_flags;
66
67 link_cmd->general_params.single_stream_ant_msk =
68 iwl4965_first_antenna(priv->hw_params.valid_tx_ant);
69
70 link_cmd->general_params.dual_stream_ant_msk =
71 priv->hw_params.valid_tx_ant &
72 ~iwl4965_first_antenna(priv->hw_params.valid_tx_ant);
73 if (!link_cmd->general_params.dual_stream_ant_msk) {
74 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
75 } else if (iwl4965_num_of_ant(priv->hw_params.valid_tx_ant) == 2) {
76 link_cmd->general_params.dual_stream_ant_msk =
77 priv->hw_params.valid_tx_ant;
78 }
79
80 link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
81 link_cmd->agg_params.agg_time_limit =
82 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
83
84 link_cmd->sta_id = sta_id;
85
86 return link_cmd;
87}
88
89/*
90 * iwl4965_add_bssid_station - Add the special IBSS BSSID station
91 *
92 * Function sleeps.
93 */
94int
95iwl4965_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
96 const u8 *addr, u8 *sta_id_r)
97{
98 int ret;
99 u8 sta_id;
100 struct iwl_link_quality_cmd *link_cmd;
101 unsigned long flags;
102
103 if (sta_id_r)
104 *sta_id_r = IWL_INVALID_STATION;
105
106 ret = iwl_legacy_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
107 if (ret) {
108 IWL_ERR(priv, "Unable to add station %pM\n", addr);
109 return ret;
110 }
111
112 if (sta_id_r)
113 *sta_id_r = sta_id;
114
115 spin_lock_irqsave(&priv->sta_lock, flags);
116 priv->stations[sta_id].used |= IWL_STA_LOCAL;
117 spin_unlock_irqrestore(&priv->sta_lock, flags);
118
119 /* Set up default rate scaling table in device's station table */
120 link_cmd = iwl4965_sta_alloc_lq(priv, sta_id);
121 if (!link_cmd) {
122 IWL_ERR(priv,
123 "Unable to initialize rate scaling for station %pM.\n",
124 addr);
125 return -ENOMEM;
126 }
127
128 ret = iwl_legacy_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true);
129 if (ret)
130 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
131
132 spin_lock_irqsave(&priv->sta_lock, flags);
133 priv->stations[sta_id].lq = link_cmd;
134 spin_unlock_irqrestore(&priv->sta_lock, flags);
135
136 return 0;
137}
138
139static int iwl4965_static_wepkey_cmd(struct iwl_priv *priv,
140 struct iwl_rxon_context *ctx,
141 bool send_if_empty)
142{
143 int i, not_empty = 0;
144 u8 buff[sizeof(struct iwl_wep_cmd) +
145 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
146 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
147 size_t cmd_size = sizeof(struct iwl_wep_cmd);
148 struct iwl_host_cmd cmd = {
149 .id = ctx->wep_key_cmd,
150 .data = wep_cmd,
151 .flags = CMD_SYNC,
152 };
153
154 might_sleep();
155
156 memset(wep_cmd, 0, cmd_size +
157 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
158
159 for (i = 0; i < WEP_KEYS_MAX ; i++) {
160 wep_cmd->key[i].key_index = i;
161 if (ctx->wep_keys[i].key_size) {
162 wep_cmd->key[i].key_offset = i;
163 not_empty = 1;
164 } else {
165 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
166 }
167
168 wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size;
169 memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key,
170 ctx->wep_keys[i].key_size);
171 }
172
173 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
174 wep_cmd->num_keys = WEP_KEYS_MAX;
175
176 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
177
178 cmd.len = cmd_size;
179
180 if (not_empty || send_if_empty)
181 return iwl_legacy_send_cmd(priv, &cmd);
182 else
183 return 0;
184}
185
186int iwl4965_restore_default_wep_keys(struct iwl_priv *priv,
187 struct iwl_rxon_context *ctx)
188{
189 lockdep_assert_held(&priv->mutex);
190
191 return iwl4965_static_wepkey_cmd(priv, ctx, false);
192}
193
194int iwl4965_remove_default_wep_key(struct iwl_priv *priv,
195 struct iwl_rxon_context *ctx,
196 struct ieee80211_key_conf *keyconf)
197{
198 int ret;
199
200 lockdep_assert_held(&priv->mutex);
201
202 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
203 keyconf->keyidx);
204
205 memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0]));
206 if (iwl_legacy_is_rfkill(priv)) {
207 IWL_DEBUG_WEP(priv,
208 "Not sending REPLY_WEPKEY command due to RFKILL.\n");
209 /* but keys in device are clear anyway so return success */
210 return 0;
211 }
212 ret = iwl4965_static_wepkey_cmd(priv, ctx, 1);
213 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
214 keyconf->keyidx, ret);
215
216 return ret;
217}
218
219int iwl4965_set_default_wep_key(struct iwl_priv *priv,
220 struct iwl_rxon_context *ctx,
221 struct ieee80211_key_conf *keyconf)
222{
223 int ret;
224
225 lockdep_assert_held(&priv->mutex);
226
227 if (keyconf->keylen != WEP_KEY_LEN_128 &&
228 keyconf->keylen != WEP_KEY_LEN_64) {
229 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
230 return -EINVAL;
231 }
232
233 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
234 keyconf->hw_key_idx = HW_KEY_DEFAULT;
235 priv->stations[ctx->ap_sta_id].keyinfo.cipher = keyconf->cipher;
236
237 ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
238 memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key,
239 keyconf->keylen);
240
241 ret = iwl4965_static_wepkey_cmd(priv, ctx, false);
242 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
243 keyconf->keylen, keyconf->keyidx, ret);
244
245 return ret;
246}
247
248static int iwl4965_set_wep_dynamic_key_info(struct iwl_priv *priv,
249 struct iwl_rxon_context *ctx,
250 struct ieee80211_key_conf *keyconf,
251 u8 sta_id)
252{
253 unsigned long flags;
254 __le16 key_flags = 0;
255 struct iwl_legacy_addsta_cmd sta_cmd;
256
257 lockdep_assert_held(&priv->mutex);
258
259 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
260
261 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
262 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
263 key_flags &= ~STA_KEY_FLG_INVALID;
264
265 if (keyconf->keylen == WEP_KEY_LEN_128)
266 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
267
268 if (sta_id == ctx->bcast_sta_id)
269 key_flags |= STA_KEY_MULTICAST_MSK;
270
271 spin_lock_irqsave(&priv->sta_lock, flags);
272
273 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
274 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
275 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
276
277 memcpy(priv->stations[sta_id].keyinfo.key,
278 keyconf->key, keyconf->keylen);
279
280 memcpy(&priv->stations[sta_id].sta.key.key[3],
281 keyconf->key, keyconf->keylen);
282
283 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
284 == STA_KEY_FLG_NO_ENC)
285 priv->stations[sta_id].sta.key.key_offset =
286 iwl_legacy_get_free_ucode_key_index(priv);
287 /* else, we are overriding an existing key => no need to allocated room
288 * in uCode. */
289
290 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
291 "no space for a new key");
292
293 priv->stations[sta_id].sta.key.key_flags = key_flags;
294 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
295 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
296
297 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
298 sizeof(struct iwl_legacy_addsta_cmd));
299 spin_unlock_irqrestore(&priv->sta_lock, flags);
300
301 return iwl_legacy_send_add_sta(priv, &sta_cmd, CMD_SYNC);
302}
303
304static int iwl4965_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
305 struct iwl_rxon_context *ctx,
306 struct ieee80211_key_conf *keyconf,
307 u8 sta_id)
308{
309 unsigned long flags;
310 __le16 key_flags = 0;
311 struct iwl_legacy_addsta_cmd sta_cmd;
312
313 lockdep_assert_held(&priv->mutex);
314
315 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
316 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
317 key_flags &= ~STA_KEY_FLG_INVALID;
318
319 if (sta_id == ctx->bcast_sta_id)
320 key_flags |= STA_KEY_MULTICAST_MSK;
321
322 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
323
324 spin_lock_irqsave(&priv->sta_lock, flags);
325 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
326 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
327
328 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
329 keyconf->keylen);
330
331 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
332 keyconf->keylen);
333
334 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
335 == STA_KEY_FLG_NO_ENC)
336 priv->stations[sta_id].sta.key.key_offset =
337 iwl_legacy_get_free_ucode_key_index(priv);
338 /* else, we are overriding an existing key => no need to allocated room
339 * in uCode. */
340
341 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
342 "no space for a new key");
343
344 priv->stations[sta_id].sta.key.key_flags = key_flags;
345 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
346 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
347
348 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
349 sizeof(struct iwl_legacy_addsta_cmd));
350 spin_unlock_irqrestore(&priv->sta_lock, flags);
351
352 return iwl_legacy_send_add_sta(priv, &sta_cmd, CMD_SYNC);
353}
354
355static int iwl4965_set_tkip_dynamic_key_info(struct iwl_priv *priv,
356 struct iwl_rxon_context *ctx,
357 struct ieee80211_key_conf *keyconf,
358 u8 sta_id)
359{
360 unsigned long flags;
361 int ret = 0;
362 __le16 key_flags = 0;
363
364 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
365 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
366 key_flags &= ~STA_KEY_FLG_INVALID;
367
368 if (sta_id == ctx->bcast_sta_id)
369 key_flags |= STA_KEY_MULTICAST_MSK;
370
371 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
372 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
373
374 spin_lock_irqsave(&priv->sta_lock, flags);
375
376 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
377 priv->stations[sta_id].keyinfo.keylen = 16;
378
379 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
380 == STA_KEY_FLG_NO_ENC)
381 priv->stations[sta_id].sta.key.key_offset =
382 iwl_legacy_get_free_ucode_key_index(priv);
383 /* else, we are overriding an existing key => no need to allocated room
384 * in uCode. */
385
386 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
387 "no space for a new key");
388
389 priv->stations[sta_id].sta.key.key_flags = key_flags;
390
391
392 /* This copy is acutally not needed: we get the key with each TX */
393 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
394
395 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
396
397 spin_unlock_irqrestore(&priv->sta_lock, flags);
398
399 return ret;
400}
401
402void iwl4965_update_tkip_key(struct iwl_priv *priv,
403 struct iwl_rxon_context *ctx,
404 struct ieee80211_key_conf *keyconf,
405 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
406{
407 u8 sta_id;
408 unsigned long flags;
409 int i;
410
411 if (iwl_legacy_scan_cancel(priv)) {
412 /* cancel scan failed, just live w/ bad key and rely
413 briefly on SW decryption */
414 return;
415 }
416
417 sta_id = iwl_legacy_sta_id_or_broadcast(priv, ctx, sta);
418 if (sta_id == IWL_INVALID_STATION)
419 return;
420
421 spin_lock_irqsave(&priv->sta_lock, flags);
422
423 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
424
425 for (i = 0; i < 5; i++)
426 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
427 cpu_to_le16(phase1key[i]);
428
429 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
430 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
431
432 iwl_legacy_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
433
434 spin_unlock_irqrestore(&priv->sta_lock, flags);
435
436}
437
438int iwl4965_remove_dynamic_key(struct iwl_priv *priv,
439 struct iwl_rxon_context *ctx,
440 struct ieee80211_key_conf *keyconf,
441 u8 sta_id)
442{
443 unsigned long flags;
444 u16 key_flags;
445 u8 keyidx;
446 struct iwl_legacy_addsta_cmd sta_cmd;
447
448 lockdep_assert_held(&priv->mutex);
449
450 ctx->key_mapping_keys--;
451
452 spin_lock_irqsave(&priv->sta_lock, flags);
453 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
454 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
455
456 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
457 keyconf->keyidx, sta_id);
458
459 if (keyconf->keyidx != keyidx) {
460 /* We need to remove a key with index different that the one
461 * in the uCode. This means that the key we need to remove has
462 * been replaced by another one with different index.
463 * Don't do anything and return ok
464 */
465 spin_unlock_irqrestore(&priv->sta_lock, flags);
466 return 0;
467 }
468
469 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
470 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
471 keyconf->keyidx, key_flags);
472 spin_unlock_irqrestore(&priv->sta_lock, flags);
473 return 0;
474 }
475
476 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
477 &priv->ucode_key_table))
478 IWL_ERR(priv, "index %d not used in uCode key table.\n",
479 priv->stations[sta_id].sta.key.key_offset);
480 memset(&priv->stations[sta_id].keyinfo, 0,
481 sizeof(struct iwl_hw_key));
482 memset(&priv->stations[sta_id].sta.key, 0,
483 sizeof(struct iwl4965_keyinfo));
484 priv->stations[sta_id].sta.key.key_flags =
485 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
486 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
487 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
488 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
489
490 if (iwl_legacy_is_rfkill(priv)) {
491 IWL_DEBUG_WEP(priv,
492 "Not sending REPLY_ADD_STA command because RFKILL enabled.\n");
493 spin_unlock_irqrestore(&priv->sta_lock, flags);
494 return 0;
495 }
496 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
497 sizeof(struct iwl_legacy_addsta_cmd));
498 spin_unlock_irqrestore(&priv->sta_lock, flags);
499
500 return iwl_legacy_send_add_sta(priv, &sta_cmd, CMD_SYNC);
501}
502
503int iwl4965_set_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
504 struct ieee80211_key_conf *keyconf, u8 sta_id)
505{
506 int ret;
507
508 lockdep_assert_held(&priv->mutex);
509
510 ctx->key_mapping_keys++;
511 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
512
513 switch (keyconf->cipher) {
514 case WLAN_CIPHER_SUITE_CCMP:
515 ret = iwl4965_set_ccmp_dynamic_key_info(priv, ctx,
516 keyconf, sta_id);
517 break;
518 case WLAN_CIPHER_SUITE_TKIP:
519 ret = iwl4965_set_tkip_dynamic_key_info(priv, ctx,
520 keyconf, sta_id);
521 break;
522 case WLAN_CIPHER_SUITE_WEP40:
523 case WLAN_CIPHER_SUITE_WEP104:
524 ret = iwl4965_set_wep_dynamic_key_info(priv, ctx,
525 keyconf, sta_id);
526 break;
527 default:
528 IWL_ERR(priv,
529 "Unknown alg: %s cipher = %x\n", __func__,
530 keyconf->cipher);
531 ret = -EINVAL;
532 }
533
534 IWL_DEBUG_WEP(priv,
535 "Set dynamic key: cipher=%x len=%d idx=%d sta=%d ret=%d\n",
536 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
537 sta_id, ret);
538
539 return ret;
540}
541
542/**
543 * iwl4965_alloc_bcast_station - add broadcast station into driver's station table.
544 *
545 * This adds the broadcast station into the driver's station table
546 * and marks it driver active, so that it will be restored to the
547 * device at the next best time.
548 */
549int iwl4965_alloc_bcast_station(struct iwl_priv *priv,
550 struct iwl_rxon_context *ctx)
551{
552 struct iwl_link_quality_cmd *link_cmd;
553 unsigned long flags;
554 u8 sta_id;
555
556 spin_lock_irqsave(&priv->sta_lock, flags);
557 sta_id = iwl_legacy_prep_station(priv, ctx, iwlegacy_bcast_addr,
558 false, NULL);
559 if (sta_id == IWL_INVALID_STATION) {
560 IWL_ERR(priv, "Unable to prepare broadcast station\n");
561 spin_unlock_irqrestore(&priv->sta_lock, flags);
562
563 return -EINVAL;
564 }
565
566 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
567 priv->stations[sta_id].used |= IWL_STA_BCAST;
568 spin_unlock_irqrestore(&priv->sta_lock, flags);
569
570 link_cmd = iwl4965_sta_alloc_lq(priv, sta_id);
571 if (!link_cmd) {
572 IWL_ERR(priv,
573 "Unable to initialize rate scaling for bcast station.\n");
574 return -ENOMEM;
575 }
576
577 spin_lock_irqsave(&priv->sta_lock, flags);
578 priv->stations[sta_id].lq = link_cmd;
579 spin_unlock_irqrestore(&priv->sta_lock, flags);
580
581 return 0;
582}
583
584/**
585 * iwl4965_update_bcast_station - update broadcast station's LQ command
586 *
587 * Only used by iwl4965. Placed here to have all bcast station management
588 * code together.
589 */
590static int iwl4965_update_bcast_station(struct iwl_priv *priv,
591 struct iwl_rxon_context *ctx)
592{
593 unsigned long flags;
594 struct iwl_link_quality_cmd *link_cmd;
595 u8 sta_id = ctx->bcast_sta_id;
596
597 link_cmd = iwl4965_sta_alloc_lq(priv, sta_id);
598 if (!link_cmd) {
599 IWL_ERR(priv,
600 "Unable to initialize rate scaling for bcast station.\n");
601 return -ENOMEM;
602 }
603
604 spin_lock_irqsave(&priv->sta_lock, flags);
605 if (priv->stations[sta_id].lq)
606 kfree(priv->stations[sta_id].lq);
607 else
608 IWL_DEBUG_INFO(priv,
609 "Bcast station rate scaling has not been initialized yet.\n");
610 priv->stations[sta_id].lq = link_cmd;
611 spin_unlock_irqrestore(&priv->sta_lock, flags);
612
613 return 0;
614}
615
616int iwl4965_update_bcast_stations(struct iwl_priv *priv)
617{
618 struct iwl_rxon_context *ctx;
619 int ret = 0;
620
621 for_each_context(priv, ctx) {
622 ret = iwl4965_update_bcast_station(priv, ctx);
623 if (ret)
624 break;
625 }
626
627 return ret;
628}
629
630/**
631 * iwl4965_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
632 */
633int iwl4965_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
634{
635 unsigned long flags;
636 struct iwl_legacy_addsta_cmd sta_cmd;
637
638 lockdep_assert_held(&priv->mutex);
639
640 /* Remove "disable" flag, to enable Tx for this TID */
641 spin_lock_irqsave(&priv->sta_lock, flags);
642 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
643 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
644 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
645 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
646 sizeof(struct iwl_legacy_addsta_cmd));
647 spin_unlock_irqrestore(&priv->sta_lock, flags);
648
649 return iwl_legacy_send_add_sta(priv, &sta_cmd, CMD_SYNC);
650}
651
652int iwl4965_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
653 int tid, u16 ssn)
654{
655 unsigned long flags;
656 int sta_id;
657 struct iwl_legacy_addsta_cmd sta_cmd;
658
659 lockdep_assert_held(&priv->mutex);
660
661 sta_id = iwl_legacy_sta_id(sta);
662 if (sta_id == IWL_INVALID_STATION)
663 return -ENXIO;
664
665 spin_lock_irqsave(&priv->sta_lock, flags);
666 priv->stations[sta_id].sta.station_flags_msk = 0;
667 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
668 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
669 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
670 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
671 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
672 sizeof(struct iwl_legacy_addsta_cmd));
673 spin_unlock_irqrestore(&priv->sta_lock, flags);
674
675 return iwl_legacy_send_add_sta(priv, &sta_cmd, CMD_SYNC);
676}
677
678int iwl4965_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
679 int tid)
680{
681 unsigned long flags;
682 int sta_id;
683 struct iwl_legacy_addsta_cmd sta_cmd;
684
685 lockdep_assert_held(&priv->mutex);
686
687 sta_id = iwl_legacy_sta_id(sta);
688 if (sta_id == IWL_INVALID_STATION) {
689 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
690 return -ENXIO;
691 }
692
693 spin_lock_irqsave(&priv->sta_lock, flags);
694 priv->stations[sta_id].sta.station_flags_msk = 0;
695 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
696 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
697 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
698 memcpy(&sta_cmd, &priv->stations[sta_id].sta,
699 sizeof(struct iwl_legacy_addsta_cmd));
700 spin_unlock_irqrestore(&priv->sta_lock, flags);
701
702 return iwl_legacy_send_add_sta(priv, &sta_cmd, CMD_SYNC);
703}
704
705void
706iwl4965_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
707{
708 unsigned long flags;
709
710 spin_lock_irqsave(&priv->sta_lock, flags);
711 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
712 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
713 priv->stations[sta_id].sta.sta.modify_mask =
714 STA_MODIFY_SLEEP_TX_COUNT_MSK;
715 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
716 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
717 iwl_legacy_send_add_sta(priv,
718 &priv->stations[sta_id].sta, CMD_ASYNC);
719 spin_unlock_irqrestore(&priv->sta_lock, flags);
720
721}