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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" | |
a30e3112 | 34 | #include "iwl-agn.h" |
bdfbf092 | 35 | #include "iwl-trans.h" |
a30e3112 | 36 | |
c745f55b WYG |
37 | /* priv->shrd->sta_lock must be held */ |
38 | static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) | |
39 | { | |
40 | ||
41 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) | |
42 | IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u " | |
43 | "addr %pM\n", | |
44 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
45 | ||
46 | if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) { | |
47 | IWL_DEBUG_ASSOC(priv, | |
48 | "STA id %u addr %pM already present in uCode " | |
49 | "(according to driver)\n", | |
50 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
51 | } else { | |
52 | priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; | |
53 | IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n", | |
54 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
55 | } | |
56 | } | |
57 | ||
58 | static int iwl_process_add_sta_resp(struct iwl_priv *priv, | |
59 | struct iwl_addsta_cmd *addsta, | |
60 | struct iwl_rx_packet *pkt) | |
61 | { | |
62 | u8 sta_id = addsta->sta.sta_id; | |
63 | unsigned long flags; | |
64 | int ret = -EIO; | |
65 | ||
66 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { | |
67 | IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n", | |
68 | pkt->hdr.flags); | |
69 | return ret; | |
70 | } | |
71 | ||
72 | IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n", | |
73 | sta_id); | |
74 | ||
75 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
76 | ||
77 | switch (pkt->u.add_sta.status) { | |
78 | case ADD_STA_SUCCESS_MSK: | |
79 | IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n"); | |
80 | iwl_sta_ucode_activate(priv, sta_id); | |
81 | ret = 0; | |
82 | break; | |
83 | case ADD_STA_NO_ROOM_IN_TABLE: | |
84 | IWL_ERR(priv, "Adding station %d failed, no room in table.\n", | |
85 | sta_id); | |
86 | break; | |
87 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: | |
88 | IWL_ERR(priv, "Adding station %d failed, no block ack " | |
89 | "resource.\n", sta_id); | |
90 | break; | |
91 | case ADD_STA_MODIFY_NON_EXIST_STA: | |
92 | IWL_ERR(priv, "Attempting to modify non-existing station %d\n", | |
93 | sta_id); | |
94 | break; | |
95 | default: | |
96 | IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n", | |
97 | pkt->u.add_sta.status); | |
98 | break; | |
99 | } | |
100 | ||
101 | IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n", | |
102 | priv->stations[sta_id].sta.mode == | |
103 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
104 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
105 | ||
106 | /* | |
107 | * XXX: The MAC address in the command buffer is often changed from | |
108 | * the original sent to the device. That is, the MAC address | |
109 | * written to the command buffer often is not the same MAC address | |
110 | * read from the command buffer when the command returns. This | |
111 | * issue has not yet been resolved and this debugging is left to | |
112 | * observe the problem. | |
113 | */ | |
114 | IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n", | |
115 | priv->stations[sta_id].sta.mode == | |
116 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
117 | addsta->sta.addr); | |
118 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
119 | ||
120 | return ret; | |
121 | } | |
122 | ||
123 | int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb, | |
124 | struct iwl_device_cmd *cmd) | |
125 | { | |
126 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
127 | struct iwl_addsta_cmd *addsta = | |
128 | (struct iwl_addsta_cmd *) cmd->payload; | |
129 | ||
130 | return iwl_process_add_sta_resp(priv, addsta, pkt); | |
131 | } | |
132 | ||
133 | static u16 iwlagn_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data) | |
134 | { | |
135 | u16 size = (u16)sizeof(struct iwl_addsta_cmd); | |
136 | struct iwl_addsta_cmd *addsta = (struct iwl_addsta_cmd *)data; | |
137 | memcpy(addsta, cmd, size); | |
7f62cd17 WYG |
138 | /* resrved in agn */ |
139 | addsta->legacy_reserved = cpu_to_le16(0); | |
c745f55b WYG |
140 | return size; |
141 | } | |
142 | ||
143 | int iwl_send_add_sta(struct iwl_priv *priv, | |
144 | struct iwl_addsta_cmd *sta, u8 flags) | |
145 | { | |
146 | int ret = 0; | |
147 | u8 data[sizeof(*sta)]; | |
148 | struct iwl_host_cmd cmd = { | |
149 | .id = REPLY_ADD_STA, | |
150 | .flags = flags, | |
151 | .data = { data, }, | |
152 | }; | |
153 | u8 sta_id __maybe_unused = sta->sta.sta_id; | |
154 | ||
155 | IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n", | |
156 | sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : ""); | |
157 | ||
158 | if (!(flags & CMD_ASYNC)) { | |
159 | cmd.flags |= CMD_WANT_SKB; | |
160 | might_sleep(); | |
161 | } | |
162 | ||
163 | cmd.len[0] = iwlagn_build_addsta_hcmd(sta, data); | |
164 | ret = iwl_trans_send_cmd(trans(priv), &cmd); | |
165 | ||
166 | if (ret || (flags & CMD_ASYNC)) | |
167 | return ret; | |
168 | /*else the command was successfully sent in SYNC mode, need to free | |
169 | * the reply page */ | |
170 | ||
171 | iwl_free_pages(priv->shrd, cmd.reply_page); | |
172 | ||
173 | if (cmd.handler_status) | |
174 | IWL_ERR(priv, "%s - error in the CMD response %d", __func__, | |
175 | cmd.handler_status); | |
176 | ||
177 | return cmd.handler_status; | |
178 | } | |
179 | ||
180 | static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, | |
181 | struct ieee80211_sta *sta, | |
182 | struct iwl_rxon_context *ctx) | |
183 | { | |
184 | struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; | |
185 | __le32 sta_flags; | |
186 | u8 mimo_ps_mode; | |
187 | ||
188 | if (!sta || !sta_ht_inf->ht_supported) | |
189 | goto done; | |
190 | ||
191 | mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; | |
192 | IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n", | |
193 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? | |
194 | "static" : | |
195 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? | |
196 | "dynamic" : "disabled"); | |
197 | ||
198 | sta_flags = priv->stations[index].sta.station_flags; | |
199 | ||
200 | sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); | |
201 | ||
202 | switch (mimo_ps_mode) { | |
203 | case WLAN_HT_CAP_SM_PS_STATIC: | |
204 | sta_flags |= STA_FLG_MIMO_DIS_MSK; | |
205 | break; | |
206 | case WLAN_HT_CAP_SM_PS_DYNAMIC: | |
207 | sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; | |
208 | break; | |
209 | case WLAN_HT_CAP_SM_PS_DISABLED: | |
210 | break; | |
211 | default: | |
212 | IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode); | |
213 | break; | |
214 | } | |
215 | ||
216 | sta_flags |= cpu_to_le32( | |
217 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
218 | ||
219 | sta_flags |= cpu_to_le32( | |
220 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
221 | ||
222 | if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap)) | |
223 | sta_flags |= STA_FLG_HT40_EN_MSK; | |
224 | else | |
225 | sta_flags &= ~STA_FLG_HT40_EN_MSK; | |
226 | ||
227 | priv->stations[index].sta.station_flags = sta_flags; | |
228 | done: | |
229 | return; | |
230 | } | |
231 | ||
232 | /** | |
233 | * iwl_prep_station - Prepare station information for addition | |
234 | * | |
235 | * should be called with sta_lock held | |
236 | */ | |
237 | u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
238 | const u8 *addr, bool is_ap, struct ieee80211_sta *sta) | |
239 | { | |
240 | struct iwl_station_entry *station; | |
241 | int i; | |
242 | u8 sta_id = IWL_INVALID_STATION; | |
243 | ||
244 | if (is_ap) | |
245 | sta_id = ctx->ap_sta_id; | |
246 | else if (is_broadcast_ether_addr(addr)) | |
247 | sta_id = ctx->bcast_sta_id; | |
248 | else | |
249 | for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) { | |
250 | if (!compare_ether_addr(priv->stations[i].sta.sta.addr, | |
251 | addr)) { | |
252 | sta_id = i; | |
253 | break; | |
254 | } | |
255 | ||
256 | if (!priv->stations[i].used && | |
257 | sta_id == IWL_INVALID_STATION) | |
258 | sta_id = i; | |
259 | } | |
260 | ||
261 | /* | |
262 | * These two conditions have the same outcome, but keep them | |
263 | * separate | |
264 | */ | |
265 | if (unlikely(sta_id == IWL_INVALID_STATION)) | |
266 | return sta_id; | |
267 | ||
268 | /* | |
269 | * uCode is not able to deal with multiple requests to add a | |
270 | * station. Keep track if one is in progress so that we do not send | |
271 | * another. | |
272 | */ | |
273 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
274 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
275 | "added.\n", sta_id); | |
276 | return sta_id; | |
277 | } | |
278 | ||
279 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
280 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && | |
281 | !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) { | |
282 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " | |
283 | "adding again.\n", sta_id, addr); | |
284 | return sta_id; | |
285 | } | |
286 | ||
287 | station = &priv->stations[sta_id]; | |
288 | station->used = IWL_STA_DRIVER_ACTIVE; | |
289 | IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", | |
290 | sta_id, addr); | |
291 | priv->num_stations++; | |
292 | ||
293 | /* Set up the REPLY_ADD_STA command to send to device */ | |
294 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); | |
295 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
296 | station->sta.mode = 0; | |
297 | station->sta.sta.sta_id = sta_id; | |
298 | station->sta.station_flags = ctx->station_flags; | |
299 | station->ctxid = ctx->ctxid; | |
300 | ||
301 | if (sta) { | |
302 | struct iwl_station_priv *sta_priv; | |
303 | ||
304 | sta_priv = (void *)sta->drv_priv; | |
305 | sta_priv->ctx = ctx; | |
306 | } | |
307 | ||
308 | /* | |
309 | * OK to call unconditionally, since local stations (IBSS BSSID | |
310 | * STA and broadcast STA) pass in a NULL sta, and mac80211 | |
311 | * doesn't allow HT IBSS. | |
312 | */ | |
313 | iwl_set_ht_add_station(priv, sta_id, sta, ctx); | |
314 | ||
315 | return sta_id; | |
316 | ||
317 | } | |
318 | ||
319 | #define STA_WAIT_TIMEOUT (HZ/2) | |
320 | ||
321 | /** | |
322 | * iwl_add_station_common - | |
323 | */ | |
324 | int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
325 | const u8 *addr, bool is_ap, | |
326 | struct ieee80211_sta *sta, u8 *sta_id_r) | |
327 | { | |
328 | unsigned long flags_spin; | |
329 | int ret = 0; | |
330 | u8 sta_id; | |
331 | struct iwl_addsta_cmd sta_cmd; | |
332 | ||
333 | *sta_id_r = 0; | |
334 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
335 | sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta); | |
336 | if (sta_id == IWL_INVALID_STATION) { | |
337 | IWL_ERR(priv, "Unable to prepare station %pM for addition\n", | |
338 | addr); | |
339 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
340 | return -EINVAL; | |
341 | } | |
342 | ||
343 | /* | |
344 | * uCode is not able to deal with multiple requests to add a | |
345 | * station. Keep track if one is in progress so that we do not send | |
346 | * another. | |
347 | */ | |
348 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
349 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
350 | "added.\n", sta_id); | |
351 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
352 | return -EEXIST; | |
353 | } | |
354 | ||
355 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
356 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
357 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " | |
358 | "adding again.\n", sta_id, addr); | |
359 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
360 | return -EEXIST; | |
361 | } | |
362 | ||
363 | priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS; | |
364 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, | |
365 | sizeof(struct iwl_addsta_cmd)); | |
366 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
367 | ||
368 | /* Add station to device's station table */ | |
369 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
370 | if (ret) { | |
371 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
372 | IWL_ERR(priv, "Adding station %pM failed.\n", | |
373 | priv->stations[sta_id].sta.sta.addr); | |
374 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
375 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
376 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
377 | } | |
378 | *sta_id_r = sta_id; | |
379 | return ret; | |
380 | } | |
381 | ||
382 | /** | |
383 | * iwl_sta_ucode_deactivate - deactivate ucode status for a station | |
384 | * | |
385 | * priv->shrd->sta_lock must be held | |
386 | */ | |
387 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) | |
388 | { | |
389 | /* Ucode must be active and driver must be non active */ | |
390 | if ((priv->stations[sta_id].used & | |
391 | (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != | |
392 | IWL_STA_UCODE_ACTIVE) | |
393 | IWL_ERR(priv, "removed non active STA %u\n", sta_id); | |
394 | ||
395 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; | |
396 | ||
397 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); | |
398 | IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); | |
399 | } | |
400 | ||
401 | static int iwl_send_remove_station(struct iwl_priv *priv, | |
402 | const u8 *addr, int sta_id, | |
403 | bool temporary) | |
404 | { | |
405 | struct iwl_rx_packet *pkt; | |
406 | int ret; | |
407 | ||
408 | unsigned long flags_spin; | |
409 | struct iwl_rem_sta_cmd rm_sta_cmd; | |
410 | ||
411 | struct iwl_host_cmd cmd = { | |
412 | .id = REPLY_REMOVE_STA, | |
413 | .len = { sizeof(struct iwl_rem_sta_cmd), }, | |
414 | .flags = CMD_SYNC, | |
415 | .data = { &rm_sta_cmd, }, | |
416 | }; | |
417 | ||
418 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
419 | rm_sta_cmd.num_sta = 1; | |
420 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); | |
421 | ||
422 | cmd.flags |= CMD_WANT_SKB; | |
423 | ||
424 | ret = iwl_trans_send_cmd(trans(priv), &cmd); | |
425 | ||
426 | if (ret) | |
427 | return ret; | |
428 | ||
429 | pkt = (struct iwl_rx_packet *)cmd.reply_page; | |
430 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { | |
431 | IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n", | |
432 | pkt->hdr.flags); | |
433 | ret = -EIO; | |
434 | } | |
435 | ||
436 | if (!ret) { | |
437 | switch (pkt->u.rem_sta.status) { | |
438 | case REM_STA_SUCCESS_MSK: | |
439 | if (!temporary) { | |
440 | spin_lock_irqsave(&priv->shrd->sta_lock, | |
441 | flags_spin); | |
442 | iwl_sta_ucode_deactivate(priv, sta_id); | |
443 | spin_unlock_irqrestore(&priv->shrd->sta_lock, | |
444 | flags_spin); | |
445 | } | |
446 | IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); | |
447 | break; | |
448 | default: | |
449 | ret = -EIO; | |
450 | IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); | |
451 | break; | |
452 | } | |
453 | } | |
454 | iwl_free_pages(priv->shrd, cmd.reply_page); | |
455 | ||
456 | return ret; | |
457 | } | |
458 | ||
459 | /** | |
460 | * iwl_remove_station - Remove driver's knowledge of station. | |
461 | */ | |
462 | int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, | |
463 | const u8 *addr) | |
464 | { | |
465 | unsigned long flags; | |
855c2ee8 | 466 | u8 tid; |
c745f55b WYG |
467 | |
468 | if (!iwl_is_ready(priv->shrd)) { | |
469 | IWL_DEBUG_INFO(priv, | |
470 | "Unable to remove station %pM, device not ready.\n", | |
471 | addr); | |
472 | /* | |
473 | * It is typical for stations to be removed when we are | |
474 | * going down. Return success since device will be down | |
475 | * soon anyway | |
476 | */ | |
477 | return 0; | |
478 | } | |
479 | ||
480 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", | |
481 | sta_id, addr); | |
482 | ||
483 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) | |
484 | return -EINVAL; | |
485 | ||
486 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
487 | ||
488 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
489 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", | |
490 | addr); | |
491 | goto out_err; | |
492 | } | |
493 | ||
494 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
495 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", | |
496 | addr); | |
497 | goto out_err; | |
498 | } | |
499 | ||
500 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { | |
501 | kfree(priv->stations[sta_id].lq); | |
502 | priv->stations[sta_id].lq = NULL; | |
503 | } | |
504 | ||
855c2ee8 EG |
505 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) |
506 | memset(&priv->tid_data[sta_id][tid], 0, | |
507 | sizeof(priv->tid_data[sta_id][tid])); | |
508 | ||
c745f55b WYG |
509 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
510 | ||
511 | priv->num_stations--; | |
512 | ||
513 | if (WARN_ON(priv->num_stations < 0)) | |
514 | priv->num_stations = 0; | |
515 | ||
516 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
517 | ||
518 | return iwl_send_remove_station(priv, addr, sta_id, false); | |
519 | out_err: | |
520 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
521 | return -EINVAL; | |
522 | } | |
523 | ||
524 | /** | |
525 | * iwl_clear_ucode_stations - clear ucode station table bits | |
526 | * | |
527 | * This function clears all the bits in the driver indicating | |
528 | * which stations are active in the ucode. Call when something | |
529 | * other than explicit station management would cause this in | |
530 | * the ucode, e.g. unassociated RXON. | |
531 | */ | |
532 | void iwl_clear_ucode_stations(struct iwl_priv *priv, | |
533 | struct iwl_rxon_context *ctx) | |
534 | { | |
535 | int i; | |
536 | unsigned long flags_spin; | |
537 | bool cleared = false; | |
538 | ||
539 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); | |
540 | ||
541 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
542 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
543 | if (ctx && ctx->ctxid != priv->stations[i].ctxid) | |
544 | continue; | |
545 | ||
546 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { | |
547 | IWL_DEBUG_INFO(priv, | |
548 | "Clearing ucode active for station %d\n", i); | |
549 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
550 | cleared = true; | |
551 | } | |
552 | } | |
553 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
554 | ||
555 | if (!cleared) | |
556 | IWL_DEBUG_INFO(priv, | |
557 | "No active stations found to be cleared\n"); | |
558 | } | |
559 | ||
560 | /** | |
561 | * iwl_restore_stations() - Restore driver known stations to device | |
562 | * | |
563 | * All stations considered active by driver, but not present in ucode, is | |
564 | * restored. | |
565 | * | |
566 | * Function sleeps. | |
567 | */ | |
568 | void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
569 | { | |
570 | struct iwl_addsta_cmd sta_cmd; | |
571 | struct iwl_link_quality_cmd lq; | |
572 | unsigned long flags_spin; | |
573 | int i; | |
574 | bool found = false; | |
575 | int ret; | |
576 | bool send_lq; | |
577 | ||
578 | if (!iwl_is_ready(priv->shrd)) { | |
579 | IWL_DEBUG_INFO(priv, | |
580 | "Not ready yet, not restoring any stations.\n"); | |
581 | return; | |
582 | } | |
583 | ||
584 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); | |
585 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
586 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
587 | if (ctx->ctxid != priv->stations[i].ctxid) | |
588 | continue; | |
589 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && | |
590 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { | |
591 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", | |
592 | priv->stations[i].sta.sta.addr); | |
593 | priv->stations[i].sta.mode = 0; | |
594 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; | |
595 | found = true; | |
596 | } | |
597 | } | |
598 | ||
599 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
600 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { | |
601 | memcpy(&sta_cmd, &priv->stations[i].sta, | |
602 | sizeof(struct iwl_addsta_cmd)); | |
603 | send_lq = false; | |
604 | if (priv->stations[i].lq) { | |
605 | if (priv->shrd->wowlan) | |
606 | iwl_sta_fill_lq(priv, ctx, i, &lq); | |
607 | else | |
608 | memcpy(&lq, priv->stations[i].lq, | |
609 | sizeof(struct iwl_link_quality_cmd)); | |
610 | send_lq = true; | |
611 | } | |
612 | spin_unlock_irqrestore(&priv->shrd->sta_lock, | |
613 | flags_spin); | |
614 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
615 | if (ret) { | |
616 | spin_lock_irqsave(&priv->shrd->sta_lock, | |
617 | flags_spin); | |
618 | IWL_ERR(priv, "Adding station %pM failed.\n", | |
619 | priv->stations[i].sta.sta.addr); | |
620 | priv->stations[i].used &= | |
621 | ~IWL_STA_DRIVER_ACTIVE; | |
622 | priv->stations[i].used &= | |
623 | ~IWL_STA_UCODE_INPROGRESS; | |
624 | spin_unlock_irqrestore(&priv->shrd->sta_lock, | |
625 | flags_spin); | |
626 | } | |
627 | /* | |
628 | * Rate scaling has already been initialized, send | |
629 | * current LQ command | |
630 | */ | |
631 | if (send_lq) | |
632 | iwl_send_lq_cmd(priv, ctx, &lq, | |
633 | CMD_SYNC, true); | |
634 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
635 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; | |
636 | } | |
637 | } | |
638 | ||
639 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
640 | if (!found) | |
641 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
642 | "no stations to be restored.\n"); | |
643 | else | |
644 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
645 | "complete.\n"); | |
646 | } | |
647 | ||
648 | void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
649 | { | |
650 | unsigned long flags; | |
651 | int sta_id = ctx->ap_sta_id; | |
652 | int ret; | |
653 | struct iwl_addsta_cmd sta_cmd; | |
654 | struct iwl_link_quality_cmd lq; | |
aed0fd4a | 655 | bool active, have_lq = false; |
c745f55b WYG |
656 | |
657 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
658 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
659 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
660 | return; | |
661 | } | |
662 | ||
663 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); | |
664 | sta_cmd.mode = 0; | |
aed0fd4a JB |
665 | if (priv->stations[sta_id].lq) { |
666 | memcpy(&lq, priv->stations[sta_id].lq, sizeof(lq)); | |
667 | have_lq = true; | |
668 | } | |
c745f55b WYG |
669 | |
670 | active = priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE; | |
671 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
672 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
673 | ||
674 | if (active) { | |
675 | ret = iwl_send_remove_station( | |
676 | priv, priv->stations[sta_id].sta.sta.addr, | |
677 | sta_id, true); | |
678 | if (ret) | |
679 | IWL_ERR(priv, "failed to remove STA %pM (%d)\n", | |
680 | priv->stations[sta_id].sta.sta.addr, ret); | |
681 | } | |
682 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
683 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
684 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
685 | ||
686 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
687 | if (ret) | |
688 | IWL_ERR(priv, "failed to re-add STA %pM (%d)\n", | |
689 | priv->stations[sta_id].sta.sta.addr, ret); | |
aed0fd4a JB |
690 | if (have_lq) |
691 | iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true); | |
c745f55b WYG |
692 | } |
693 | ||
694 | int iwl_get_free_ucode_key_offset(struct iwl_priv *priv) | |
695 | { | |
696 | int i; | |
697 | ||
698 | for (i = 0; i < priv->sta_key_max_num; i++) | |
699 | if (!test_and_set_bit(i, &priv->ucode_key_table)) | |
700 | return i; | |
701 | ||
702 | return WEP_INVALID_OFFSET; | |
703 | } | |
704 | ||
705 | void iwl_dealloc_bcast_stations(struct iwl_priv *priv) | |
706 | { | |
707 | unsigned long flags; | |
708 | int i; | |
709 | ||
710 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
711 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
712 | if (!(priv->stations[i].used & IWL_STA_BCAST)) | |
713 | continue; | |
714 | ||
715 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
716 | priv->num_stations--; | |
717 | if (WARN_ON(priv->num_stations < 0)) | |
718 | priv->num_stations = 0; | |
719 | kfree(priv->stations[i].lq); | |
720 | priv->stations[i].lq = NULL; | |
721 | } | |
722 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
723 | } | |
724 | ||
725 | #ifdef CONFIG_IWLWIFI_DEBUG | |
726 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
727 | struct iwl_link_quality_cmd *lq) | |
728 | { | |
729 | int i; | |
730 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); | |
731 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", | |
732 | lq->general_params.single_stream_ant_msk, | |
733 | lq->general_params.dual_stream_ant_msk); | |
734 | ||
735 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
736 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", | |
737 | i, lq->rs_table[i].rate_n_flags); | |
738 | } | |
739 | #else | |
740 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
741 | struct iwl_link_quality_cmd *lq) | |
742 | { | |
743 | } | |
744 | #endif | |
745 | ||
746 | /** | |
747 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
748 | * | |
749 | * It sometimes happens when a HT rate has been in use and we | |
750 | * loose connectivity with AP then mac80211 will first tell us that the | |
751 | * current channel is not HT anymore before removing the station. In such a | |
752 | * scenario the RXON flags will be updated to indicate we are not | |
753 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
754 | * Test for this to prevent driver from sending LQ command between the time | |
755 | * RXON flags are updated and when LQ command is updated. | |
756 | */ | |
757 | static bool is_lq_table_valid(struct iwl_priv *priv, | |
758 | struct iwl_rxon_context *ctx, | |
759 | struct iwl_link_quality_cmd *lq) | |
760 | { | |
761 | int i; | |
762 | ||
763 | if (ctx->ht.enabled) | |
764 | return true; | |
765 | ||
766 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", | |
767 | ctx->active.channel); | |
768 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
769 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & | |
770 | RATE_MCS_HT_MSK) { | |
771 | IWL_DEBUG_INFO(priv, | |
772 | "index %d of LQ expects HT channel\n", | |
773 | i); | |
774 | return false; | |
775 | } | |
776 | } | |
777 | return true; | |
778 | } | |
779 | ||
780 | /** | |
781 | * iwl_send_lq_cmd() - Send link quality command | |
782 | * @init: This command is sent as part of station initialization right | |
783 | * after station has been added. | |
784 | * | |
785 | * The link quality command is sent as the last step of station creation. | |
786 | * This is the special case in which init is set and we call a callback in | |
787 | * this case to clear the state indicating that station creation is in | |
788 | * progress. | |
789 | */ | |
790 | int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
791 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) | |
792 | { | |
793 | int ret = 0; | |
794 | unsigned long flags_spin; | |
795 | ||
796 | struct iwl_host_cmd cmd = { | |
797 | .id = REPLY_TX_LINK_QUALITY_CMD, | |
798 | .len = { sizeof(struct iwl_link_quality_cmd), }, | |
799 | .flags = flags, | |
800 | .data = { lq, }, | |
801 | }; | |
802 | ||
803 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) | |
804 | return -EINVAL; | |
805 | ||
806 | ||
807 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
808 | if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
809 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
810 | return -EINVAL; | |
811 | } | |
812 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
813 | ||
814 | iwl_dump_lq_cmd(priv, lq); | |
815 | if (WARN_ON(init && (cmd.flags & CMD_ASYNC))) | |
816 | return -EINVAL; | |
817 | ||
818 | if (is_lq_table_valid(priv, ctx, lq)) | |
819 | ret = iwl_trans_send_cmd(trans(priv), &cmd); | |
820 | else | |
821 | ret = -EINVAL; | |
822 | ||
823 | if (cmd.flags & CMD_ASYNC) | |
824 | return ret; | |
825 | ||
826 | if (init) { | |
827 | IWL_DEBUG_INFO(priv, "init LQ command complete, " | |
828 | "clearing sta addition status for sta %d\n", | |
829 | lq->sta_id); | |
830 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
831 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
832 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
833 | } | |
834 | return ret; | |
835 | } | |
836 | ||
c745f55b | 837 | |
c079166e JB |
838 | void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
839 | u8 sta_id, struct iwl_link_quality_cmd *link_cmd) | |
a30e3112 JB |
840 | { |
841 | int i, r; | |
a30e3112 JB |
842 | u32 rate_flags = 0; |
843 | __le32 rate_n_flags; | |
844 | ||
6ac2f839 | 845 | lockdep_assert_held(&priv->shrd->mutex); |
f775aa06 | 846 | |
c079166e JB |
847 | memset(link_cmd, 0, sizeof(*link_cmd)); |
848 | ||
a30e3112 JB |
849 | /* Set up the rate scaling to start at selected rate, fall back |
850 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
851 | if (priv->band == IEEE80211_BAND_5GHZ) | |
852 | r = IWL_RATE_6M_INDEX; | |
f775aa06 JB |
853 | else if (ctx && ctx->vif && ctx->vif->p2p) |
854 | r = IWL_RATE_6M_INDEX; | |
a30e3112 JB |
855 | else |
856 | r = IWL_RATE_1M_INDEX; | |
857 | ||
858 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
859 | rate_flags |= RATE_MCS_CCK_MSK; | |
860 | ||
d6189124 | 861 | rate_flags |= first_antenna(hw_params(priv).valid_tx_ant) << |
a30e3112 JB |
862 | RATE_MCS_ANT_POS; |
863 | rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); | |
864 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
865 | link_cmd->rs_table[i].rate_n_flags = rate_n_flags; | |
866 | ||
867 | link_cmd->general_params.single_stream_ant_msk = | |
d6189124 | 868 | first_antenna(hw_params(priv).valid_tx_ant); |
a30e3112 JB |
869 | |
870 | link_cmd->general_params.dual_stream_ant_msk = | |
d6189124 EG |
871 | hw_params(priv).valid_tx_ant & |
872 | ~first_antenna(hw_params(priv).valid_tx_ant); | |
a30e3112 JB |
873 | if (!link_cmd->general_params.dual_stream_ant_msk) { |
874 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; | |
d6189124 | 875 | } else if (num_of_ant(hw_params(priv).valid_tx_ant) == 2) { |
a30e3112 | 876 | link_cmd->general_params.dual_stream_ant_msk = |
d6189124 | 877 | hw_params(priv).valid_tx_ant; |
a30e3112 JB |
878 | } |
879 | ||
c745f55b WYG |
880 | link_cmd->agg_params.agg_dis_start_th = |
881 | LINK_QUAL_AGG_DISABLE_START_DEF; | |
a30e3112 JB |
882 | link_cmd->agg_params.agg_time_limit = |
883 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); | |
884 | ||
885 | link_cmd->sta_id = sta_id; | |
c079166e JB |
886 | } |
887 | ||
888 | static struct iwl_link_quality_cmd * | |
c745f55b WYG |
889 | iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
890 | u8 sta_id) | |
c079166e JB |
891 | { |
892 | struct iwl_link_quality_cmd *link_cmd; | |
893 | ||
894 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); | |
895 | if (!link_cmd) { | |
896 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); | |
897 | return NULL; | |
898 | } | |
899 | ||
900 | iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd); | |
a30e3112 JB |
901 | |
902 | return link_cmd; | |
903 | } | |
904 | ||
905 | /* | |
906 | * iwlagn_add_bssid_station - Add the special IBSS BSSID station | |
907 | * | |
908 | * Function sleeps. | |
909 | */ | |
c745f55b WYG |
910 | int iwlagn_add_bssid_station(struct iwl_priv *priv, |
911 | struct iwl_rxon_context *ctx, | |
a30e3112 JB |
912 | const u8 *addr, u8 *sta_id_r) |
913 | { | |
914 | int ret; | |
915 | u8 sta_id; | |
916 | struct iwl_link_quality_cmd *link_cmd; | |
917 | unsigned long flags; | |
918 | ||
919 | if (sta_id_r) | |
920 | *sta_id_r = IWL_INVALID_STATION; | |
921 | ||
922 | ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); | |
923 | if (ret) { | |
924 | IWL_ERR(priv, "Unable to add station %pM\n", addr); | |
925 | return ret; | |
926 | } | |
927 | ||
928 | if (sta_id_r) | |
929 | *sta_id_r = sta_id; | |
930 | ||
f39c95e8 | 931 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 932 | priv->stations[sta_id].used |= IWL_STA_LOCAL; |
f39c95e8 | 933 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
934 | |
935 | /* Set up default rate scaling table in device's station table */ | |
f775aa06 | 936 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 | 937 | if (!link_cmd) { |
c745f55b WYG |
938 | IWL_ERR(priv, |
939 | "Unable to initialize rate scaling for station %pM.\n", | |
a30e3112 JB |
940 | addr); |
941 | return -ENOMEM; | |
942 | } | |
943 | ||
944 | ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); | |
945 | if (ret) | |
946 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); | |
947 | ||
f39c95e8 | 948 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 949 | priv->stations[sta_id].lq = link_cmd; |
f39c95e8 | 950 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
951 | |
952 | return 0; | |
953 | } | |
954 | ||
5a3d9882 JB |
955 | /* |
956 | * static WEP keys | |
957 | * | |
958 | * For each context, the device has a table of 4 static WEP keys | |
959 | * (one for each key index) that is updated with the following | |
960 | * commands. | |
961 | */ | |
962 | ||
a30e3112 JB |
963 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
964 | struct iwl_rxon_context *ctx, | |
965 | bool send_if_empty) | |
966 | { | |
967 | int i, not_empty = 0; | |
968 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
969 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
970 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
971 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
972 | struct iwl_host_cmd cmd = { | |
973 | .id = ctx->wep_key_cmd, | |
3fa50738 | 974 | .data = { wep_cmd, }, |
a30e3112 JB |
975 | .flags = CMD_SYNC, |
976 | }; | |
977 | ||
978 | might_sleep(); | |
979 | ||
980 | memset(wep_cmd, 0, cmd_size + | |
981 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
982 | ||
983 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
984 | wep_cmd->key[i].key_index = i; | |
985 | if (ctx->wep_keys[i].key_size) { | |
986 | wep_cmd->key[i].key_offset = i; | |
987 | not_empty = 1; | |
988 | } else { | |
989 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
990 | } | |
991 | ||
992 | wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; | |
993 | memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, | |
994 | ctx->wep_keys[i].key_size); | |
995 | } | |
996 | ||
997 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
998 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
999 | ||
1000 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
1001 | ||
3fa50738 | 1002 | cmd.len[0] = cmd_size; |
a30e3112 JB |
1003 | |
1004 | if (not_empty || send_if_empty) | |
e6bb4c9c | 1005 | return iwl_trans_send_cmd(trans(priv), &cmd); |
a30e3112 JB |
1006 | else |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | int iwl_restore_default_wep_keys(struct iwl_priv *priv, | |
1011 | struct iwl_rxon_context *ctx) | |
1012 | { | |
6ac2f839 | 1013 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1014 | |
1015 | return iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1016 | } | |
1017 | ||
1018 | int iwl_remove_default_wep_key(struct iwl_priv *priv, | |
1019 | struct iwl_rxon_context *ctx, | |
1020 | struct ieee80211_key_conf *keyconf) | |
1021 | { | |
1022 | int ret; | |
1023 | ||
6ac2f839 | 1024 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1025 | |
1026 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", | |
1027 | keyconf->keyidx); | |
1028 | ||
1029 | memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); | |
845a9c0d | 1030 | if (iwl_is_rfkill(priv->shrd)) { |
c745f55b WYG |
1031 | IWL_DEBUG_WEP(priv, |
1032 | "Not sending REPLY_WEPKEY command due to RFKILL.\n"); | |
a30e3112 JB |
1033 | /* but keys in device are clear anyway so return success */ |
1034 | return 0; | |
1035 | } | |
1036 | ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); | |
1037 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", | |
1038 | keyconf->keyidx, ret); | |
1039 | ||
1040 | return ret; | |
1041 | } | |
1042 | ||
1043 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
1044 | struct iwl_rxon_context *ctx, | |
1045 | struct ieee80211_key_conf *keyconf) | |
1046 | { | |
1047 | int ret; | |
1048 | ||
6ac2f839 | 1049 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1050 | |
1051 | if (keyconf->keylen != WEP_KEY_LEN_128 && | |
1052 | keyconf->keylen != WEP_KEY_LEN_64) { | |
c745f55b WYG |
1053 | IWL_DEBUG_WEP(priv, |
1054 | "Bad WEP key length %d\n", keyconf->keylen); | |
a30e3112 JB |
1055 | return -EINVAL; |
1056 | } | |
1057 | ||
5a3d9882 | 1058 | keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT; |
a30e3112 JB |
1059 | |
1060 | ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; | |
1061 | memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
1062 | keyconf->keylen); | |
1063 | ||
1064 | ret = iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1065 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", | |
1066 | keyconf->keylen, keyconf->keyidx, ret); | |
1067 | ||
1068 | return ret; | |
1069 | } | |
1070 | ||
5a3d9882 JB |
1071 | /* |
1072 | * dynamic (per-station) keys | |
1073 | * | |
1074 | * The dynamic keys are a little more complicated. The device has | |
1075 | * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys. | |
1076 | * These are linked to stations by a table that contains an index | |
1077 | * into the key table for each station/key index/{mcast,unicast}, | |
1078 | * i.e. it's basically an array of pointers like this: | |
1079 | * key_offset_t key_mapping[NUM_STATIONS][4][2]; | |
1080 | * (it really works differently, but you can think of it as such) | |
1081 | * | |
1082 | * The key uploading and linking happens in the same command, the | |
1083 | * add station command with STA_MODIFY_KEY_MASK. | |
1084 | */ | |
a30e3112 | 1085 | |
5a3d9882 JB |
1086 | static u8 iwlagn_key_sta_id(struct iwl_priv *priv, |
1087 | struct ieee80211_vif *vif, | |
1088 | struct ieee80211_sta *sta) | |
1089 | { | |
1090 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
1091 | u8 sta_id = IWL_INVALID_STATION; | |
1092 | ||
1093 | if (sta) | |
1094 | sta_id = iwl_sta_id(sta); | |
1095 | ||
1096 | /* | |
1097 | * The device expects GTKs for station interfaces to be | |
1098 | * installed as GTKs for the AP station. If we have no | |
1099 | * station ID, then use the ap_sta_id in that case. | |
1100 | */ | |
1101 | if (!sta && vif && vif_priv->ctx) { | |
1102 | switch (vif->type) { | |
1103 | case NL80211_IFTYPE_STATION: | |
1104 | sta_id = vif_priv->ctx->ap_sta_id; | |
1105 | break; | |
1106 | default: | |
1107 | /* | |
1108 | * In all other cases, the key will be | |
1109 | * used either for TX only or is bound | |
1110 | * to a station already. | |
1111 | */ | |
1112 | break; | |
1113 | } | |
1114 | } | |
a30e3112 | 1115 | |
5a3d9882 | 1116 | return sta_id; |
a30e3112 JB |
1117 | } |
1118 | ||
e1b1c087 JB |
1119 | static int iwlagn_send_sta_key(struct iwl_priv *priv, |
1120 | struct ieee80211_key_conf *keyconf, | |
1121 | u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, | |
1122 | u32 cmd_flags) | |
a30e3112 JB |
1123 | { |
1124 | unsigned long flags; | |
5a3d9882 | 1125 | __le16 key_flags; |
a30e3112 | 1126 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1127 | int i; |
e1b1c087 | 1128 | |
f39c95e8 | 1129 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
5a3d9882 | 1130 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
f39c95e8 | 1131 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 | 1132 | |
5a3d9882 JB |
1133 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1134 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK; | |
a30e3112 | 1135 | |
5a3d9882 JB |
1136 | switch (keyconf->cipher) { |
1137 | case WLAN_CIPHER_SUITE_CCMP: | |
1138 | key_flags |= STA_KEY_FLG_CCMP; | |
1139 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1140 | break; | |
1141 | case WLAN_CIPHER_SUITE_TKIP: | |
1142 | key_flags |= STA_KEY_FLG_TKIP; | |
1143 | sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32; | |
1144 | for (i = 0; i < 5; i++) | |
1145 | sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); | |
1146 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1147 | break; | |
1148 | case WLAN_CIPHER_SUITE_WEP104: | |
1149 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; | |
1150 | /* fall through */ | |
1151 | case WLAN_CIPHER_SUITE_WEP40: | |
1152 | key_flags |= STA_KEY_FLG_WEP; | |
1153 | memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen); | |
1154 | break; | |
1155 | default: | |
1156 | WARN_ON(1); | |
1157 | return -EINVAL; | |
1158 | } | |
a30e3112 | 1159 | |
5a3d9882 | 1160 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) |
a30e3112 JB |
1161 | key_flags |= STA_KEY_MULTICAST_MSK; |
1162 | ||
5a3d9882 JB |
1163 | /* key pointer (offset) */ |
1164 | sta_cmd.key.key_offset = keyconf->hw_key_idx; | |
a30e3112 | 1165 | |
5a3d9882 JB |
1166 | sta_cmd.key.key_flags = key_flags; |
1167 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
1168 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
a30e3112 | 1169 | |
5a3d9882 | 1170 | return iwl_send_add_sta(priv, &sta_cmd, cmd_flags); |
a30e3112 JB |
1171 | } |
1172 | ||
1173 | void iwl_update_tkip_key(struct iwl_priv *priv, | |
5a3d9882 | 1174 | struct ieee80211_vif *vif, |
a30e3112 JB |
1175 | struct ieee80211_key_conf *keyconf, |
1176 | struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) | |
1177 | { | |
5a3d9882 JB |
1178 | u8 sta_id = iwlagn_key_sta_id(priv, vif, sta); |
1179 | ||
1180 | if (sta_id == IWL_INVALID_STATION) | |
1181 | return; | |
a30e3112 JB |
1182 | |
1183 | if (iwl_scan_cancel(priv)) { | |
1184 | /* cancel scan failed, just live w/ bad key and rely | |
1185 | briefly on SW decryption */ | |
1186 | return; | |
1187 | } | |
1188 | ||
e1b1c087 JB |
1189 | iwlagn_send_sta_key(priv, keyconf, sta_id, |
1190 | iv32, phase1key, CMD_ASYNC); | |
a30e3112 JB |
1191 | } |
1192 | ||
1193 | int iwl_remove_dynamic_key(struct iwl_priv *priv, | |
1194 | struct iwl_rxon_context *ctx, | |
1195 | struct ieee80211_key_conf *keyconf, | |
5a3d9882 | 1196 | struct ieee80211_sta *sta) |
a30e3112 JB |
1197 | { |
1198 | unsigned long flags; | |
a30e3112 | 1199 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 JB |
1200 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
1201 | ||
1202 | /* if station isn't there, neither is the key */ | |
1203 | if (sta_id == IWL_INVALID_STATION) | |
1204 | return -ENOENT; | |
1205 | ||
f39c95e8 | 1206 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
5a3d9882 JB |
1207 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
1208 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) | |
1209 | sta_id = IWL_INVALID_STATION; | |
f39c95e8 | 1210 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
5a3d9882 JB |
1211 | |
1212 | if (sta_id == IWL_INVALID_STATION) | |
1213 | return 0; | |
a30e3112 | 1214 | |
6ac2f839 | 1215 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1216 | |
1217 | ctx->key_mapping_keys--; | |
1218 | ||
a30e3112 JB |
1219 | IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
1220 | keyconf->keyidx, sta_id); | |
1221 | ||
5a3d9882 JB |
1222 | if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table)) |
1223 | IWL_ERR(priv, "offset %d not used in uCode key table.\n", | |
1224 | keyconf->hw_key_idx); | |
a30e3112 | 1225 | |
5a3d9882 JB |
1226 | sta_cmd.key.key_flags = STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; |
1227 | sta_cmd.key.key_offset = WEP_INVALID_OFFSET; | |
1228 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
1229 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
a30e3112 JB |
1230 | |
1231 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1232 | } | |
1233 | ||
5a3d9882 JB |
1234 | int iwl_set_dynamic_key(struct iwl_priv *priv, |
1235 | struct iwl_rxon_context *ctx, | |
1236 | struct ieee80211_key_conf *keyconf, | |
1237 | struct ieee80211_sta *sta) | |
a30e3112 | 1238 | { |
5a3d9882 JB |
1239 | struct ieee80211_key_seq seq; |
1240 | u16 p1k[5]; | |
a30e3112 | 1241 | int ret; |
5a3d9882 JB |
1242 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
1243 | const u8 *addr; | |
1244 | ||
1245 | if (sta_id == IWL_INVALID_STATION) | |
1246 | return -EINVAL; | |
a30e3112 | 1247 | |
6ac2f839 | 1248 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 | 1249 | |
5a3d9882 JB |
1250 | keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv); |
1251 | if (keyconf->hw_key_idx == WEP_INVALID_OFFSET) | |
1252 | return -ENOSPC; | |
1253 | ||
a30e3112 | 1254 | ctx->key_mapping_keys++; |
a30e3112 JB |
1255 | |
1256 | switch (keyconf->cipher) { | |
a30e3112 | 1257 | case WLAN_CIPHER_SUITE_TKIP: |
5a3d9882 JB |
1258 | if (sta) |
1259 | addr = sta->addr; | |
1260 | else /* station mode case only */ | |
1261 | addr = ctx->active.bssid_addr; | |
1262 | ||
1263 | /* pre-fill phase 1 key into device cache */ | |
1264 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1265 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
e1b1c087 JB |
1266 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1267 | seq.tkip.iv32, p1k, CMD_SYNC); | |
a30e3112 | 1268 | break; |
5a3d9882 | 1269 | case WLAN_CIPHER_SUITE_CCMP: |
a30e3112 JB |
1270 | case WLAN_CIPHER_SUITE_WEP40: |
1271 | case WLAN_CIPHER_SUITE_WEP104: | |
e1b1c087 JB |
1272 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1273 | 0, NULL, CMD_SYNC); | |
a30e3112 JB |
1274 | break; |
1275 | default: | |
5a3d9882 | 1276 | IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher); |
a30e3112 JB |
1277 | ret = -EINVAL; |
1278 | } | |
1279 | ||
5a3d9882 JB |
1280 | if (ret) { |
1281 | ctx->key_mapping_keys--; | |
1282 | clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table); | |
1283 | } | |
1284 | ||
1285 | IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
a30e3112 | 1286 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
5a3d9882 | 1287 | sta ? sta->addr : NULL, ret); |
a30e3112 JB |
1288 | |
1289 | return ret; | |
1290 | } | |
1291 | ||
1292 | /** | |
1293 | * iwlagn_alloc_bcast_station - add broadcast station into driver's station table. | |
1294 | * | |
1295 | * This adds the broadcast station into the driver's station table | |
1296 | * and marks it driver active, so that it will be restored to the | |
1297 | * device at the next best time. | |
1298 | */ | |
1299 | int iwlagn_alloc_bcast_station(struct iwl_priv *priv, | |
1300 | struct iwl_rxon_context *ctx) | |
1301 | { | |
1302 | struct iwl_link_quality_cmd *link_cmd; | |
1303 | unsigned long flags; | |
1304 | u8 sta_id; | |
1305 | ||
f39c95e8 | 1306 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1307 | sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
1308 | if (sta_id == IWL_INVALID_STATION) { | |
1309 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); | |
f39c95e8 | 1310 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1311 | |
1312 | return -EINVAL; | |
1313 | } | |
1314 | ||
1315 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
1316 | priv->stations[sta_id].used |= IWL_STA_BCAST; | |
f39c95e8 | 1317 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 | 1318 | |
f775aa06 | 1319 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1320 | if (!link_cmd) { |
1321 | IWL_ERR(priv, | |
1322 | "Unable to initialize rate scaling for bcast station.\n"); | |
1323 | return -ENOMEM; | |
1324 | } | |
1325 | ||
f39c95e8 | 1326 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 1327 | priv->stations[sta_id].lq = link_cmd; |
f39c95e8 | 1328 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1329 | |
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | /** | |
1334 | * iwl_update_bcast_station - update broadcast station's LQ command | |
1335 | * | |
1336 | * Only used by iwlagn. Placed here to have all bcast station management | |
1337 | * code together. | |
1338 | */ | |
f775aa06 JB |
1339 | int iwl_update_bcast_station(struct iwl_priv *priv, |
1340 | struct iwl_rxon_context *ctx) | |
a30e3112 JB |
1341 | { |
1342 | unsigned long flags; | |
1343 | struct iwl_link_quality_cmd *link_cmd; | |
1344 | u8 sta_id = ctx->bcast_sta_id; | |
1345 | ||
f775aa06 | 1346 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1347 | if (!link_cmd) { |
1348 | IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); | |
1349 | return -ENOMEM; | |
1350 | } | |
1351 | ||
f39c95e8 | 1352 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1353 | if (priv->stations[sta_id].lq) |
1354 | kfree(priv->stations[sta_id].lq); | |
1355 | else | |
1356 | IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); | |
1357 | priv->stations[sta_id].lq = link_cmd; | |
f39c95e8 | 1358 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1359 | |
1360 | return 0; | |
1361 | } | |
1362 | ||
1363 | int iwl_update_bcast_stations(struct iwl_priv *priv) | |
1364 | { | |
1365 | struct iwl_rxon_context *ctx; | |
1366 | int ret = 0; | |
1367 | ||
1368 | for_each_context(priv, ctx) { | |
1369 | ret = iwl_update_bcast_station(priv, ctx); | |
1370 | if (ret) | |
1371 | break; | |
1372 | } | |
1373 | ||
1374 | return ret; | |
1375 | } | |
1376 | ||
1377 | /** | |
1378 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table | |
1379 | */ | |
1380 | int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) | |
1381 | { | |
1382 | unsigned long flags; | |
1383 | struct iwl_addsta_cmd sta_cmd; | |
1384 | ||
6ac2f839 | 1385 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1386 | |
1387 | /* Remove "disable" flag, to enable Tx for this TID */ | |
f39c95e8 | 1388 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1389 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
1390 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
1391 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1392 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 1393 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1394 | |
1395 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1396 | } | |
1397 | ||
1398 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1399 | int tid, u16 ssn) | |
1400 | { | |
1401 | unsigned long flags; | |
1402 | int sta_id; | |
1403 | struct iwl_addsta_cmd sta_cmd; | |
1404 | ||
6ac2f839 | 1405 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1406 | |
1407 | sta_id = iwl_sta_id(sta); | |
1408 | if (sta_id == IWL_INVALID_STATION) | |
1409 | return -ENXIO; | |
1410 | ||
f39c95e8 | 1411 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1412 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1413 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
1414 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
1415 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
1416 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1417 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 1418 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1419 | |
1420 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1421 | } | |
1422 | ||
1423 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1424 | int tid) | |
1425 | { | |
1426 | unsigned long flags; | |
1427 | int sta_id; | |
1428 | struct iwl_addsta_cmd sta_cmd; | |
1429 | ||
6ac2f839 | 1430 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1431 | |
1432 | sta_id = iwl_sta_id(sta); | |
1433 | if (sta_id == IWL_INVALID_STATION) { | |
1434 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
1435 | return -ENXIO; | |
1436 | } | |
1437 | ||
f39c95e8 | 1438 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1439 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1440 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
1441 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
1442 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1443 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 1444 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1445 | |
1446 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1447 | } | |
1448 | ||
a30e3112 | 1449 | |
a30e3112 JB |
1450 | |
1451 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) | |
1452 | { | |
1453 | unsigned long flags; | |
1454 | ||
f39c95e8 | 1455 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1456 | priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK; |
1457 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
1458 | priv->stations[sta_id].sta.sta.modify_mask = | |
1459 | STA_MODIFY_SLEEP_TX_COUNT_MSK; | |
1460 | priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt); | |
1461 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1462 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
f39c95e8 | 1463 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1464 | |
1465 | } |