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a30e3112 JB |
1 | /****************************************************************************** |
2 | * | |
901069c7 | 3 | * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved. |
a30e3112 JB |
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" | |
bdfbf092 | 36 | #include "iwl-trans.h" |
a30e3112 JB |
37 | |
38 | static struct iwl_link_quality_cmd * | |
f775aa06 | 39 | iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, u8 sta_id) |
a30e3112 JB |
40 | { |
41 | int i, r; | |
42 | struct iwl_link_quality_cmd *link_cmd; | |
43 | u32 rate_flags = 0; | |
44 | __le32 rate_n_flags; | |
45 | ||
46 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); | |
47 | if (!link_cmd) { | |
48 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); | |
49 | return NULL; | |
50 | } | |
f775aa06 | 51 | |
6ac2f839 | 52 | lockdep_assert_held(&priv->shrd->mutex); |
f775aa06 | 53 | |
a30e3112 JB |
54 | /* Set up the rate scaling to start at selected rate, fall back |
55 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
56 | if (priv->band == IEEE80211_BAND_5GHZ) | |
57 | r = IWL_RATE_6M_INDEX; | |
f775aa06 JB |
58 | else if (ctx && ctx->vif && ctx->vif->p2p) |
59 | r = IWL_RATE_6M_INDEX; | |
a30e3112 JB |
60 | else |
61 | r = IWL_RATE_1M_INDEX; | |
62 | ||
63 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
64 | rate_flags |= RATE_MCS_CCK_MSK; | |
65 | ||
d6189124 | 66 | rate_flags |= first_antenna(hw_params(priv).valid_tx_ant) << |
a30e3112 JB |
67 | RATE_MCS_ANT_POS; |
68 | rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); | |
69 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
70 | link_cmd->rs_table[i].rate_n_flags = rate_n_flags; | |
71 | ||
72 | link_cmd->general_params.single_stream_ant_msk = | |
d6189124 | 73 | first_antenna(hw_params(priv).valid_tx_ant); |
a30e3112 JB |
74 | |
75 | link_cmd->general_params.dual_stream_ant_msk = | |
d6189124 EG |
76 | hw_params(priv).valid_tx_ant & |
77 | ~first_antenna(hw_params(priv).valid_tx_ant); | |
a30e3112 JB |
78 | if (!link_cmd->general_params.dual_stream_ant_msk) { |
79 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; | |
d6189124 | 80 | } else if (num_of_ant(hw_params(priv).valid_tx_ant) == 2) { |
a30e3112 | 81 | link_cmd->general_params.dual_stream_ant_msk = |
d6189124 | 82 | hw_params(priv).valid_tx_ant; |
a30e3112 JB |
83 | } |
84 | ||
85 | link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; | |
86 | link_cmd->agg_params.agg_time_limit = | |
87 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); | |
88 | ||
89 | link_cmd->sta_id = sta_id; | |
90 | ||
91 | return link_cmd; | |
92 | } | |
93 | ||
94 | /* | |
95 | * iwlagn_add_bssid_station - Add the special IBSS BSSID station | |
96 | * | |
97 | * Function sleeps. | |
98 | */ | |
99 | int iwlagn_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
100 | const u8 *addr, u8 *sta_id_r) | |
101 | { | |
102 | int ret; | |
103 | u8 sta_id; | |
104 | struct iwl_link_quality_cmd *link_cmd; | |
105 | unsigned long flags; | |
106 | ||
107 | if (sta_id_r) | |
108 | *sta_id_r = IWL_INVALID_STATION; | |
109 | ||
110 | ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); | |
111 | if (ret) { | |
112 | IWL_ERR(priv, "Unable to add station %pM\n", addr); | |
113 | return ret; | |
114 | } | |
115 | ||
116 | if (sta_id_r) | |
117 | *sta_id_r = sta_id; | |
118 | ||
f39c95e8 | 119 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 120 | priv->stations[sta_id].used |= IWL_STA_LOCAL; |
f39c95e8 | 121 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
122 | |
123 | /* Set up default rate scaling table in device's station table */ | |
f775aa06 | 124 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
125 | if (!link_cmd) { |
126 | IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n", | |
127 | addr); | |
128 | return -ENOMEM; | |
129 | } | |
130 | ||
131 | ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); | |
132 | if (ret) | |
133 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); | |
134 | ||
f39c95e8 | 135 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 136 | priv->stations[sta_id].lq = link_cmd; |
f39c95e8 | 137 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
138 | |
139 | return 0; | |
140 | } | |
141 | ||
5a3d9882 JB |
142 | /* |
143 | * static WEP keys | |
144 | * | |
145 | * For each context, the device has a table of 4 static WEP keys | |
146 | * (one for each key index) that is updated with the following | |
147 | * commands. | |
148 | */ | |
149 | ||
a30e3112 JB |
150 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
151 | struct iwl_rxon_context *ctx, | |
152 | bool send_if_empty) | |
153 | { | |
154 | int i, not_empty = 0; | |
155 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
156 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
157 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
158 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
159 | struct iwl_host_cmd cmd = { | |
160 | .id = ctx->wep_key_cmd, | |
3fa50738 | 161 | .data = { wep_cmd, }, |
a30e3112 JB |
162 | .flags = CMD_SYNC, |
163 | }; | |
164 | ||
165 | might_sleep(); | |
166 | ||
167 | memset(wep_cmd, 0, cmd_size + | |
168 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
169 | ||
170 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
171 | wep_cmd->key[i].key_index = i; | |
172 | if (ctx->wep_keys[i].key_size) { | |
173 | wep_cmd->key[i].key_offset = i; | |
174 | not_empty = 1; | |
175 | } else { | |
176 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
177 | } | |
178 | ||
179 | wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; | |
180 | memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, | |
181 | ctx->wep_keys[i].key_size); | |
182 | } | |
183 | ||
184 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
185 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
186 | ||
187 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
188 | ||
3fa50738 | 189 | cmd.len[0] = cmd_size; |
a30e3112 JB |
190 | |
191 | if (not_empty || send_if_empty) | |
e6bb4c9c | 192 | return iwl_trans_send_cmd(trans(priv), &cmd); |
a30e3112 JB |
193 | else |
194 | return 0; | |
195 | } | |
196 | ||
197 | int iwl_restore_default_wep_keys(struct iwl_priv *priv, | |
198 | struct iwl_rxon_context *ctx) | |
199 | { | |
6ac2f839 | 200 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
201 | |
202 | return iwl_send_static_wepkey_cmd(priv, ctx, false); | |
203 | } | |
204 | ||
205 | int iwl_remove_default_wep_key(struct iwl_priv *priv, | |
206 | struct iwl_rxon_context *ctx, | |
207 | struct ieee80211_key_conf *keyconf) | |
208 | { | |
209 | int ret; | |
210 | ||
6ac2f839 | 211 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
212 | |
213 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", | |
214 | keyconf->keyidx); | |
215 | ||
216 | memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); | |
217 | if (iwl_is_rfkill(priv)) { | |
218 | IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n"); | |
219 | /* but keys in device are clear anyway so return success */ | |
220 | return 0; | |
221 | } | |
222 | ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); | |
223 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", | |
224 | keyconf->keyidx, ret); | |
225 | ||
226 | return ret; | |
227 | } | |
228 | ||
229 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
230 | struct iwl_rxon_context *ctx, | |
231 | struct ieee80211_key_conf *keyconf) | |
232 | { | |
233 | int ret; | |
234 | ||
6ac2f839 | 235 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
236 | |
237 | if (keyconf->keylen != WEP_KEY_LEN_128 && | |
238 | keyconf->keylen != WEP_KEY_LEN_64) { | |
239 | IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen); | |
240 | return -EINVAL; | |
241 | } | |
242 | ||
5a3d9882 | 243 | keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT; |
a30e3112 JB |
244 | |
245 | ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; | |
246 | memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
247 | keyconf->keylen); | |
248 | ||
249 | ret = iwl_send_static_wepkey_cmd(priv, ctx, false); | |
250 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", | |
251 | keyconf->keylen, keyconf->keyidx, ret); | |
252 | ||
253 | return ret; | |
254 | } | |
255 | ||
5a3d9882 JB |
256 | /* |
257 | * dynamic (per-station) keys | |
258 | * | |
259 | * The dynamic keys are a little more complicated. The device has | |
260 | * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys. | |
261 | * These are linked to stations by a table that contains an index | |
262 | * into the key table for each station/key index/{mcast,unicast}, | |
263 | * i.e. it's basically an array of pointers like this: | |
264 | * key_offset_t key_mapping[NUM_STATIONS][4][2]; | |
265 | * (it really works differently, but you can think of it as such) | |
266 | * | |
267 | * The key uploading and linking happens in the same command, the | |
268 | * add station command with STA_MODIFY_KEY_MASK. | |
269 | */ | |
a30e3112 | 270 | |
5a3d9882 JB |
271 | static u8 iwlagn_key_sta_id(struct iwl_priv *priv, |
272 | struct ieee80211_vif *vif, | |
273 | struct ieee80211_sta *sta) | |
274 | { | |
275 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
276 | u8 sta_id = IWL_INVALID_STATION; | |
277 | ||
278 | if (sta) | |
279 | sta_id = iwl_sta_id(sta); | |
280 | ||
281 | /* | |
282 | * The device expects GTKs for station interfaces to be | |
283 | * installed as GTKs for the AP station. If we have no | |
284 | * station ID, then use the ap_sta_id in that case. | |
285 | */ | |
286 | if (!sta && vif && vif_priv->ctx) { | |
287 | switch (vif->type) { | |
288 | case NL80211_IFTYPE_STATION: | |
289 | sta_id = vif_priv->ctx->ap_sta_id; | |
290 | break; | |
291 | default: | |
292 | /* | |
293 | * In all other cases, the key will be | |
294 | * used either for TX only or is bound | |
295 | * to a station already. | |
296 | */ | |
297 | break; | |
298 | } | |
299 | } | |
a30e3112 | 300 | |
5a3d9882 | 301 | return sta_id; |
a30e3112 JB |
302 | } |
303 | ||
e1b1c087 JB |
304 | static int iwlagn_send_sta_key(struct iwl_priv *priv, |
305 | struct ieee80211_key_conf *keyconf, | |
306 | u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, | |
307 | u32 cmd_flags) | |
a30e3112 JB |
308 | { |
309 | unsigned long flags; | |
5a3d9882 | 310 | __le16 key_flags; |
a30e3112 | 311 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 312 | int i; |
e1b1c087 | 313 | |
f39c95e8 | 314 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
5a3d9882 | 315 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
f39c95e8 | 316 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 | 317 | |
5a3d9882 JB |
318 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
319 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK; | |
a30e3112 | 320 | |
5a3d9882 JB |
321 | switch (keyconf->cipher) { |
322 | case WLAN_CIPHER_SUITE_CCMP: | |
323 | key_flags |= STA_KEY_FLG_CCMP; | |
324 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
325 | break; | |
326 | case WLAN_CIPHER_SUITE_TKIP: | |
327 | key_flags |= STA_KEY_FLG_TKIP; | |
328 | sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32; | |
329 | for (i = 0; i < 5; i++) | |
330 | sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); | |
331 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
332 | break; | |
333 | case WLAN_CIPHER_SUITE_WEP104: | |
334 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; | |
335 | /* fall through */ | |
336 | case WLAN_CIPHER_SUITE_WEP40: | |
337 | key_flags |= STA_KEY_FLG_WEP; | |
338 | memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen); | |
339 | break; | |
340 | default: | |
341 | WARN_ON(1); | |
342 | return -EINVAL; | |
343 | } | |
a30e3112 | 344 | |
5a3d9882 | 345 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) |
a30e3112 JB |
346 | key_flags |= STA_KEY_MULTICAST_MSK; |
347 | ||
5a3d9882 JB |
348 | /* key pointer (offset) */ |
349 | sta_cmd.key.key_offset = keyconf->hw_key_idx; | |
a30e3112 | 350 | |
5a3d9882 JB |
351 | sta_cmd.key.key_flags = key_flags; |
352 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
353 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
a30e3112 | 354 | |
5a3d9882 | 355 | return iwl_send_add_sta(priv, &sta_cmd, cmd_flags); |
a30e3112 JB |
356 | } |
357 | ||
358 | void iwl_update_tkip_key(struct iwl_priv *priv, | |
5a3d9882 | 359 | struct ieee80211_vif *vif, |
a30e3112 JB |
360 | struct ieee80211_key_conf *keyconf, |
361 | struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) | |
362 | { | |
5a3d9882 JB |
363 | u8 sta_id = iwlagn_key_sta_id(priv, vif, sta); |
364 | ||
365 | if (sta_id == IWL_INVALID_STATION) | |
366 | return; | |
a30e3112 JB |
367 | |
368 | if (iwl_scan_cancel(priv)) { | |
369 | /* cancel scan failed, just live w/ bad key and rely | |
370 | briefly on SW decryption */ | |
371 | return; | |
372 | } | |
373 | ||
e1b1c087 JB |
374 | iwlagn_send_sta_key(priv, keyconf, sta_id, |
375 | iv32, phase1key, CMD_ASYNC); | |
a30e3112 JB |
376 | } |
377 | ||
378 | int iwl_remove_dynamic_key(struct iwl_priv *priv, | |
379 | struct iwl_rxon_context *ctx, | |
380 | struct ieee80211_key_conf *keyconf, | |
5a3d9882 | 381 | struct ieee80211_sta *sta) |
a30e3112 JB |
382 | { |
383 | unsigned long flags; | |
a30e3112 | 384 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 JB |
385 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
386 | ||
387 | /* if station isn't there, neither is the key */ | |
388 | if (sta_id == IWL_INVALID_STATION) | |
389 | return -ENOENT; | |
390 | ||
f39c95e8 | 391 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
5a3d9882 JB |
392 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
393 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) | |
394 | sta_id = IWL_INVALID_STATION; | |
f39c95e8 | 395 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
5a3d9882 JB |
396 | |
397 | if (sta_id == IWL_INVALID_STATION) | |
398 | return 0; | |
a30e3112 | 399 | |
6ac2f839 | 400 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
401 | |
402 | ctx->key_mapping_keys--; | |
403 | ||
a30e3112 JB |
404 | IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
405 | keyconf->keyidx, sta_id); | |
406 | ||
5a3d9882 JB |
407 | if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table)) |
408 | IWL_ERR(priv, "offset %d not used in uCode key table.\n", | |
409 | keyconf->hw_key_idx); | |
a30e3112 | 410 | |
5a3d9882 JB |
411 | sta_cmd.key.key_flags = STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; |
412 | sta_cmd.key.key_offset = WEP_INVALID_OFFSET; | |
413 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
414 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
a30e3112 JB |
415 | |
416 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
417 | } | |
418 | ||
5a3d9882 JB |
419 | int iwl_set_dynamic_key(struct iwl_priv *priv, |
420 | struct iwl_rxon_context *ctx, | |
421 | struct ieee80211_key_conf *keyconf, | |
422 | struct ieee80211_sta *sta) | |
a30e3112 | 423 | { |
5a3d9882 JB |
424 | struct ieee80211_key_seq seq; |
425 | u16 p1k[5]; | |
a30e3112 | 426 | int ret; |
5a3d9882 JB |
427 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
428 | const u8 *addr; | |
429 | ||
430 | if (sta_id == IWL_INVALID_STATION) | |
431 | return -EINVAL; | |
a30e3112 | 432 | |
6ac2f839 | 433 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 | 434 | |
5a3d9882 JB |
435 | keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv); |
436 | if (keyconf->hw_key_idx == WEP_INVALID_OFFSET) | |
437 | return -ENOSPC; | |
438 | ||
a30e3112 | 439 | ctx->key_mapping_keys++; |
a30e3112 JB |
440 | |
441 | switch (keyconf->cipher) { | |
a30e3112 | 442 | case WLAN_CIPHER_SUITE_TKIP: |
5a3d9882 JB |
443 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; |
444 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
445 | ||
446 | if (sta) | |
447 | addr = sta->addr; | |
448 | else /* station mode case only */ | |
449 | addr = ctx->active.bssid_addr; | |
450 | ||
451 | /* pre-fill phase 1 key into device cache */ | |
452 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
453 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
e1b1c087 JB |
454 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
455 | seq.tkip.iv32, p1k, CMD_SYNC); | |
a30e3112 | 456 | break; |
5a3d9882 JB |
457 | case WLAN_CIPHER_SUITE_CCMP: |
458 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
459 | /* fall through */ | |
a30e3112 JB |
460 | case WLAN_CIPHER_SUITE_WEP40: |
461 | case WLAN_CIPHER_SUITE_WEP104: | |
e1b1c087 JB |
462 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
463 | 0, NULL, CMD_SYNC); | |
a30e3112 JB |
464 | break; |
465 | default: | |
5a3d9882 | 466 | IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher); |
a30e3112 JB |
467 | ret = -EINVAL; |
468 | } | |
469 | ||
5a3d9882 JB |
470 | if (ret) { |
471 | ctx->key_mapping_keys--; | |
472 | clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table); | |
473 | } | |
474 | ||
475 | IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
a30e3112 | 476 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
5a3d9882 | 477 | sta ? sta->addr : NULL, ret); |
a30e3112 JB |
478 | |
479 | return ret; | |
480 | } | |
481 | ||
482 | /** | |
483 | * iwlagn_alloc_bcast_station - add broadcast station into driver's station table. | |
484 | * | |
485 | * This adds the broadcast station into the driver's station table | |
486 | * and marks it driver active, so that it will be restored to the | |
487 | * device at the next best time. | |
488 | */ | |
489 | int iwlagn_alloc_bcast_station(struct iwl_priv *priv, | |
490 | struct iwl_rxon_context *ctx) | |
491 | { | |
492 | struct iwl_link_quality_cmd *link_cmd; | |
493 | unsigned long flags; | |
494 | u8 sta_id; | |
495 | ||
f39c95e8 | 496 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
497 | sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
498 | if (sta_id == IWL_INVALID_STATION) { | |
499 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); | |
f39c95e8 | 500 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
501 | |
502 | return -EINVAL; | |
503 | } | |
504 | ||
505 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
506 | priv->stations[sta_id].used |= IWL_STA_BCAST; | |
f39c95e8 | 507 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 | 508 | |
f775aa06 | 509 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
510 | if (!link_cmd) { |
511 | IWL_ERR(priv, | |
512 | "Unable to initialize rate scaling for bcast station.\n"); | |
513 | return -ENOMEM; | |
514 | } | |
515 | ||
f39c95e8 | 516 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 517 | priv->stations[sta_id].lq = link_cmd; |
f39c95e8 | 518 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
519 | |
520 | return 0; | |
521 | } | |
522 | ||
523 | /** | |
524 | * iwl_update_bcast_station - update broadcast station's LQ command | |
525 | * | |
526 | * Only used by iwlagn. Placed here to have all bcast station management | |
527 | * code together. | |
528 | */ | |
f775aa06 JB |
529 | int iwl_update_bcast_station(struct iwl_priv *priv, |
530 | struct iwl_rxon_context *ctx) | |
a30e3112 JB |
531 | { |
532 | unsigned long flags; | |
533 | struct iwl_link_quality_cmd *link_cmd; | |
534 | u8 sta_id = ctx->bcast_sta_id; | |
535 | ||
f775aa06 | 536 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
537 | if (!link_cmd) { |
538 | IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); | |
539 | return -ENOMEM; | |
540 | } | |
541 | ||
f39c95e8 | 542 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
543 | if (priv->stations[sta_id].lq) |
544 | kfree(priv->stations[sta_id].lq); | |
545 | else | |
546 | IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); | |
547 | priv->stations[sta_id].lq = link_cmd; | |
f39c95e8 | 548 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
549 | |
550 | return 0; | |
551 | } | |
552 | ||
553 | int iwl_update_bcast_stations(struct iwl_priv *priv) | |
554 | { | |
555 | struct iwl_rxon_context *ctx; | |
556 | int ret = 0; | |
557 | ||
558 | for_each_context(priv, ctx) { | |
559 | ret = iwl_update_bcast_station(priv, ctx); | |
560 | if (ret) | |
561 | break; | |
562 | } | |
563 | ||
564 | return ret; | |
565 | } | |
566 | ||
567 | /** | |
568 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table | |
569 | */ | |
570 | int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) | |
571 | { | |
572 | unsigned long flags; | |
573 | struct iwl_addsta_cmd sta_cmd; | |
574 | ||
6ac2f839 | 575 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
576 | |
577 | /* Remove "disable" flag, to enable Tx for this TID */ | |
f39c95e8 | 578 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
579 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
580 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
581 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
582 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 583 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
584 | |
585 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
586 | } | |
587 | ||
588 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
589 | int tid, u16 ssn) | |
590 | { | |
591 | unsigned long flags; | |
592 | int sta_id; | |
593 | struct iwl_addsta_cmd sta_cmd; | |
594 | ||
6ac2f839 | 595 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
596 | |
597 | sta_id = iwl_sta_id(sta); | |
598 | if (sta_id == IWL_INVALID_STATION) | |
599 | return -ENXIO; | |
600 | ||
f39c95e8 | 601 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
602 | priv->stations[sta_id].sta.station_flags_msk = 0; |
603 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
604 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
605 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
606 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
607 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 608 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
609 | |
610 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
611 | } | |
612 | ||
613 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
614 | int tid) | |
615 | { | |
616 | unsigned long flags; | |
617 | int sta_id; | |
618 | struct iwl_addsta_cmd sta_cmd; | |
619 | ||
6ac2f839 | 620 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
621 | |
622 | sta_id = iwl_sta_id(sta); | |
623 | if (sta_id == IWL_INVALID_STATION) { | |
624 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
625 | return -ENXIO; | |
626 | } | |
627 | ||
f39c95e8 | 628 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
629 | priv->stations[sta_id].sta.station_flags_msk = 0; |
630 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
631 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
632 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
633 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 634 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
635 | |
636 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
637 | } | |
638 | ||
ae79d23d | 639 | static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) |
a30e3112 JB |
640 | { |
641 | unsigned long flags; | |
642 | ||
f39c95e8 | 643 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
644 | priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK; |
645 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
646 | priv->stations[sta_id].sta.sta.modify_mask = 0; | |
647 | priv->stations[sta_id].sta.sleep_tx_count = 0; | |
648 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
649 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
f39c95e8 | 650 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
651 | |
652 | } | |
653 | ||
654 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) | |
655 | { | |
656 | unsigned long flags; | |
657 | ||
f39c95e8 | 658 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
659 | priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK; |
660 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
661 | priv->stations[sta_id].sta.sta.modify_mask = | |
662 | STA_MODIFY_SLEEP_TX_COUNT_MSK; | |
663 | priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt); | |
664 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
665 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
f39c95e8 | 666 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
667 | |
668 | } | |
ae79d23d JB |
669 | |
670 | void iwlagn_mac_sta_notify(struct ieee80211_hw *hw, | |
671 | struct ieee80211_vif *vif, | |
672 | enum sta_notify_cmd cmd, | |
673 | struct ieee80211_sta *sta) | |
674 | { | |
675 | struct iwl_priv *priv = hw->priv; | |
676 | struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; | |
677 | int sta_id; | |
678 | ||
679 | switch (cmd) { | |
680 | case STA_NOTIFY_SLEEP: | |
681 | WARN_ON(!sta_priv->client); | |
682 | sta_priv->asleep = true; | |
683 | if (atomic_read(&sta_priv->pending_frames) > 0) | |
684 | ieee80211_sta_block_awake(hw, sta, true); | |
685 | break; | |
686 | case STA_NOTIFY_AWAKE: | |
687 | WARN_ON(!sta_priv->client); | |
688 | if (!sta_priv->asleep) | |
689 | break; | |
690 | sta_priv->asleep = false; | |
691 | sta_id = iwl_sta_id(sta); | |
692 | if (sta_id != IWL_INVALID_STATION) | |
693 | iwl_sta_modify_ps_wake(priv, sta_id); | |
694 | break; | |
695 | default: | |
696 | break; | |
697 | } | |
698 | } |