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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); | |
138 | /* resrved in 5000 */ | |
139 | addsta->rate_n_flags = cpu_to_le16(0); | |
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; | |
466 | ||
467 | if (!iwl_is_ready(priv->shrd)) { | |
468 | IWL_DEBUG_INFO(priv, | |
469 | "Unable to remove station %pM, device not ready.\n", | |
470 | addr); | |
471 | /* | |
472 | * It is typical for stations to be removed when we are | |
473 | * going down. Return success since device will be down | |
474 | * soon anyway | |
475 | */ | |
476 | return 0; | |
477 | } | |
478 | ||
479 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", | |
480 | sta_id, addr); | |
481 | ||
482 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) | |
483 | return -EINVAL; | |
484 | ||
485 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
486 | ||
487 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
488 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", | |
489 | addr); | |
490 | goto out_err; | |
491 | } | |
492 | ||
493 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
494 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", | |
495 | addr); | |
496 | goto out_err; | |
497 | } | |
498 | ||
499 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { | |
500 | kfree(priv->stations[sta_id].lq); | |
501 | priv->stations[sta_id].lq = NULL; | |
502 | } | |
503 | ||
504 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
505 | ||
506 | priv->num_stations--; | |
507 | ||
508 | if (WARN_ON(priv->num_stations < 0)) | |
509 | priv->num_stations = 0; | |
510 | ||
511 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
512 | ||
513 | return iwl_send_remove_station(priv, addr, sta_id, false); | |
514 | out_err: | |
515 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
516 | return -EINVAL; | |
517 | } | |
518 | ||
519 | /** | |
520 | * iwl_clear_ucode_stations - clear ucode station table bits | |
521 | * | |
522 | * This function clears all the bits in the driver indicating | |
523 | * which stations are active in the ucode. Call when something | |
524 | * other than explicit station management would cause this in | |
525 | * the ucode, e.g. unassociated RXON. | |
526 | */ | |
527 | void iwl_clear_ucode_stations(struct iwl_priv *priv, | |
528 | struct iwl_rxon_context *ctx) | |
529 | { | |
530 | int i; | |
531 | unsigned long flags_spin; | |
532 | bool cleared = false; | |
533 | ||
534 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); | |
535 | ||
536 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
537 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
538 | if (ctx && ctx->ctxid != priv->stations[i].ctxid) | |
539 | continue; | |
540 | ||
541 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { | |
542 | IWL_DEBUG_INFO(priv, | |
543 | "Clearing ucode active for station %d\n", i); | |
544 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
545 | cleared = true; | |
546 | } | |
547 | } | |
548 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
549 | ||
550 | if (!cleared) | |
551 | IWL_DEBUG_INFO(priv, | |
552 | "No active stations found to be cleared\n"); | |
553 | } | |
554 | ||
555 | /** | |
556 | * iwl_restore_stations() - Restore driver known stations to device | |
557 | * | |
558 | * All stations considered active by driver, but not present in ucode, is | |
559 | * restored. | |
560 | * | |
561 | * Function sleeps. | |
562 | */ | |
563 | void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
564 | { | |
565 | struct iwl_addsta_cmd sta_cmd; | |
566 | struct iwl_link_quality_cmd lq; | |
567 | unsigned long flags_spin; | |
568 | int i; | |
569 | bool found = false; | |
570 | int ret; | |
571 | bool send_lq; | |
572 | ||
573 | if (!iwl_is_ready(priv->shrd)) { | |
574 | IWL_DEBUG_INFO(priv, | |
575 | "Not ready yet, not restoring any stations.\n"); | |
576 | return; | |
577 | } | |
578 | ||
579 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); | |
580 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
581 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
582 | if (ctx->ctxid != priv->stations[i].ctxid) | |
583 | continue; | |
584 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && | |
585 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { | |
586 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", | |
587 | priv->stations[i].sta.sta.addr); | |
588 | priv->stations[i].sta.mode = 0; | |
589 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; | |
590 | found = true; | |
591 | } | |
592 | } | |
593 | ||
594 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
595 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { | |
596 | memcpy(&sta_cmd, &priv->stations[i].sta, | |
597 | sizeof(struct iwl_addsta_cmd)); | |
598 | send_lq = false; | |
599 | if (priv->stations[i].lq) { | |
600 | if (priv->shrd->wowlan) | |
601 | iwl_sta_fill_lq(priv, ctx, i, &lq); | |
602 | else | |
603 | memcpy(&lq, priv->stations[i].lq, | |
604 | sizeof(struct iwl_link_quality_cmd)); | |
605 | send_lq = true; | |
606 | } | |
607 | spin_unlock_irqrestore(&priv->shrd->sta_lock, | |
608 | flags_spin); | |
609 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
610 | if (ret) { | |
611 | spin_lock_irqsave(&priv->shrd->sta_lock, | |
612 | flags_spin); | |
613 | IWL_ERR(priv, "Adding station %pM failed.\n", | |
614 | priv->stations[i].sta.sta.addr); | |
615 | priv->stations[i].used &= | |
616 | ~IWL_STA_DRIVER_ACTIVE; | |
617 | priv->stations[i].used &= | |
618 | ~IWL_STA_UCODE_INPROGRESS; | |
619 | spin_unlock_irqrestore(&priv->shrd->sta_lock, | |
620 | flags_spin); | |
621 | } | |
622 | /* | |
623 | * Rate scaling has already been initialized, send | |
624 | * current LQ command | |
625 | */ | |
626 | if (send_lq) | |
627 | iwl_send_lq_cmd(priv, ctx, &lq, | |
628 | CMD_SYNC, true); | |
629 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
630 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; | |
631 | } | |
632 | } | |
633 | ||
634 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
635 | if (!found) | |
636 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
637 | "no stations to be restored.\n"); | |
638 | else | |
639 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
640 | "complete.\n"); | |
641 | } | |
642 | ||
643 | void iwl_reprogram_ap_sta(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
644 | { | |
645 | unsigned long flags; | |
646 | int sta_id = ctx->ap_sta_id; | |
647 | int ret; | |
648 | struct iwl_addsta_cmd sta_cmd; | |
649 | struct iwl_link_quality_cmd lq; | |
650 | bool active; | |
651 | ||
652 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
653 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
654 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
655 | return; | |
656 | } | |
657 | ||
658 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); | |
659 | sta_cmd.mode = 0; | |
660 | memcpy(&lq, priv->stations[sta_id].lq, sizeof(lq)); | |
661 | ||
662 | active = priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE; | |
663 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
664 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
665 | ||
666 | if (active) { | |
667 | ret = iwl_send_remove_station( | |
668 | priv, priv->stations[sta_id].sta.sta.addr, | |
669 | sta_id, true); | |
670 | if (ret) | |
671 | IWL_ERR(priv, "failed to remove STA %pM (%d)\n", | |
672 | priv->stations[sta_id].sta.sta.addr, ret); | |
673 | } | |
674 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
675 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
676 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
677 | ||
678 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
679 | if (ret) | |
680 | IWL_ERR(priv, "failed to re-add STA %pM (%d)\n", | |
681 | priv->stations[sta_id].sta.sta.addr, ret); | |
682 | iwl_send_lq_cmd(priv, ctx, &lq, CMD_SYNC, true); | |
683 | } | |
684 | ||
685 | int iwl_get_free_ucode_key_offset(struct iwl_priv *priv) | |
686 | { | |
687 | int i; | |
688 | ||
689 | for (i = 0; i < priv->sta_key_max_num; i++) | |
690 | if (!test_and_set_bit(i, &priv->ucode_key_table)) | |
691 | return i; | |
692 | ||
693 | return WEP_INVALID_OFFSET; | |
694 | } | |
695 | ||
696 | void iwl_dealloc_bcast_stations(struct iwl_priv *priv) | |
697 | { | |
698 | unsigned long flags; | |
699 | int i; | |
700 | ||
701 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
702 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
703 | if (!(priv->stations[i].used & IWL_STA_BCAST)) | |
704 | continue; | |
705 | ||
706 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
707 | priv->num_stations--; | |
708 | if (WARN_ON(priv->num_stations < 0)) | |
709 | priv->num_stations = 0; | |
710 | kfree(priv->stations[i].lq); | |
711 | priv->stations[i].lq = NULL; | |
712 | } | |
713 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
714 | } | |
715 | ||
716 | #ifdef CONFIG_IWLWIFI_DEBUG | |
717 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
718 | struct iwl_link_quality_cmd *lq) | |
719 | { | |
720 | int i; | |
721 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); | |
722 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", | |
723 | lq->general_params.single_stream_ant_msk, | |
724 | lq->general_params.dual_stream_ant_msk); | |
725 | ||
726 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
727 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", | |
728 | i, lq->rs_table[i].rate_n_flags); | |
729 | } | |
730 | #else | |
731 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
732 | struct iwl_link_quality_cmd *lq) | |
733 | { | |
734 | } | |
735 | #endif | |
736 | ||
737 | /** | |
738 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
739 | * | |
740 | * It sometimes happens when a HT rate has been in use and we | |
741 | * loose connectivity with AP then mac80211 will first tell us that the | |
742 | * current channel is not HT anymore before removing the station. In such a | |
743 | * scenario the RXON flags will be updated to indicate we are not | |
744 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
745 | * Test for this to prevent driver from sending LQ command between the time | |
746 | * RXON flags are updated and when LQ command is updated. | |
747 | */ | |
748 | static bool is_lq_table_valid(struct iwl_priv *priv, | |
749 | struct iwl_rxon_context *ctx, | |
750 | struct iwl_link_quality_cmd *lq) | |
751 | { | |
752 | int i; | |
753 | ||
754 | if (ctx->ht.enabled) | |
755 | return true; | |
756 | ||
757 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", | |
758 | ctx->active.channel); | |
759 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
760 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & | |
761 | RATE_MCS_HT_MSK) { | |
762 | IWL_DEBUG_INFO(priv, | |
763 | "index %d of LQ expects HT channel\n", | |
764 | i); | |
765 | return false; | |
766 | } | |
767 | } | |
768 | return true; | |
769 | } | |
770 | ||
771 | /** | |
772 | * iwl_send_lq_cmd() - Send link quality command | |
773 | * @init: This command is sent as part of station initialization right | |
774 | * after station has been added. | |
775 | * | |
776 | * The link quality command is sent as the last step of station creation. | |
777 | * This is the special case in which init is set and we call a callback in | |
778 | * this case to clear the state indicating that station creation is in | |
779 | * progress. | |
780 | */ | |
781 | int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
782 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) | |
783 | { | |
784 | int ret = 0; | |
785 | unsigned long flags_spin; | |
786 | ||
787 | struct iwl_host_cmd cmd = { | |
788 | .id = REPLY_TX_LINK_QUALITY_CMD, | |
789 | .len = { sizeof(struct iwl_link_quality_cmd), }, | |
790 | .flags = flags, | |
791 | .data = { lq, }, | |
792 | }; | |
793 | ||
794 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) | |
795 | return -EINVAL; | |
796 | ||
797 | ||
798 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
799 | if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
800 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
801 | return -EINVAL; | |
802 | } | |
803 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
804 | ||
805 | iwl_dump_lq_cmd(priv, lq); | |
806 | if (WARN_ON(init && (cmd.flags & CMD_ASYNC))) | |
807 | return -EINVAL; | |
808 | ||
809 | if (is_lq_table_valid(priv, ctx, lq)) | |
810 | ret = iwl_trans_send_cmd(trans(priv), &cmd); | |
811 | else | |
812 | ret = -EINVAL; | |
813 | ||
814 | if (cmd.flags & CMD_ASYNC) | |
815 | return ret; | |
816 | ||
817 | if (init) { | |
818 | IWL_DEBUG_INFO(priv, "init LQ command complete, " | |
819 | "clearing sta addition status for sta %d\n", | |
820 | lq->sta_id); | |
821 | spin_lock_irqsave(&priv->shrd->sta_lock, flags_spin); | |
822 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
823 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags_spin); | |
824 | } | |
825 | return ret; | |
826 | } | |
827 | ||
828 | int iwlagn_mac_sta_remove(struct ieee80211_hw *hw, | |
829 | struct ieee80211_vif *vif, | |
830 | struct ieee80211_sta *sta) | |
831 | { | |
832 | struct iwl_priv *priv = hw->priv; | |
833 | struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; | |
834 | int ret; | |
835 | ||
836 | IWL_DEBUG_MAC80211(priv, "enter: received request to remove " | |
837 | "station %pM\n", sta->addr); | |
838 | mutex_lock(&priv->shrd->mutex); | |
839 | IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", | |
840 | sta->addr); | |
841 | ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr); | |
842 | if (ret) | |
843 | IWL_ERR(priv, "Error removing station %pM\n", | |
844 | sta->addr); | |
845 | mutex_unlock(&priv->shrd->mutex); | |
846 | IWL_DEBUG_MAC80211(priv, "leave\n"); | |
847 | ||
848 | return ret; | |
849 | } | |
850 | ||
c079166e JB |
851 | void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
852 | u8 sta_id, struct iwl_link_quality_cmd *link_cmd) | |
a30e3112 JB |
853 | { |
854 | int i, r; | |
a30e3112 JB |
855 | u32 rate_flags = 0; |
856 | __le32 rate_n_flags; | |
857 | ||
6ac2f839 | 858 | lockdep_assert_held(&priv->shrd->mutex); |
f775aa06 | 859 | |
c079166e JB |
860 | memset(link_cmd, 0, sizeof(*link_cmd)); |
861 | ||
a30e3112 JB |
862 | /* Set up the rate scaling to start at selected rate, fall back |
863 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
864 | if (priv->band == IEEE80211_BAND_5GHZ) | |
865 | r = IWL_RATE_6M_INDEX; | |
f775aa06 JB |
866 | else if (ctx && ctx->vif && ctx->vif->p2p) |
867 | r = IWL_RATE_6M_INDEX; | |
a30e3112 JB |
868 | else |
869 | r = IWL_RATE_1M_INDEX; | |
870 | ||
871 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
872 | rate_flags |= RATE_MCS_CCK_MSK; | |
873 | ||
d6189124 | 874 | rate_flags |= first_antenna(hw_params(priv).valid_tx_ant) << |
a30e3112 JB |
875 | RATE_MCS_ANT_POS; |
876 | rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); | |
877 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
878 | link_cmd->rs_table[i].rate_n_flags = rate_n_flags; | |
879 | ||
880 | link_cmd->general_params.single_stream_ant_msk = | |
d6189124 | 881 | first_antenna(hw_params(priv).valid_tx_ant); |
a30e3112 JB |
882 | |
883 | link_cmd->general_params.dual_stream_ant_msk = | |
d6189124 EG |
884 | hw_params(priv).valid_tx_ant & |
885 | ~first_antenna(hw_params(priv).valid_tx_ant); | |
a30e3112 JB |
886 | if (!link_cmd->general_params.dual_stream_ant_msk) { |
887 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; | |
d6189124 | 888 | } else if (num_of_ant(hw_params(priv).valid_tx_ant) == 2) { |
a30e3112 | 889 | link_cmd->general_params.dual_stream_ant_msk = |
d6189124 | 890 | hw_params(priv).valid_tx_ant; |
a30e3112 JB |
891 | } |
892 | ||
c745f55b WYG |
893 | link_cmd->agg_params.agg_dis_start_th = |
894 | LINK_QUAL_AGG_DISABLE_START_DEF; | |
a30e3112 JB |
895 | link_cmd->agg_params.agg_time_limit = |
896 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); | |
897 | ||
898 | link_cmd->sta_id = sta_id; | |
c079166e JB |
899 | } |
900 | ||
901 | static struct iwl_link_quality_cmd * | |
c745f55b WYG |
902 | iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
903 | u8 sta_id) | |
c079166e JB |
904 | { |
905 | struct iwl_link_quality_cmd *link_cmd; | |
906 | ||
907 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); | |
908 | if (!link_cmd) { | |
909 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); | |
910 | return NULL; | |
911 | } | |
912 | ||
913 | iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd); | |
a30e3112 JB |
914 | |
915 | return link_cmd; | |
916 | } | |
917 | ||
918 | /* | |
919 | * iwlagn_add_bssid_station - Add the special IBSS BSSID station | |
920 | * | |
921 | * Function sleeps. | |
922 | */ | |
c745f55b WYG |
923 | int iwlagn_add_bssid_station(struct iwl_priv *priv, |
924 | struct iwl_rxon_context *ctx, | |
a30e3112 JB |
925 | const u8 *addr, u8 *sta_id_r) |
926 | { | |
927 | int ret; | |
928 | u8 sta_id; | |
929 | struct iwl_link_quality_cmd *link_cmd; | |
930 | unsigned long flags; | |
931 | ||
932 | if (sta_id_r) | |
933 | *sta_id_r = IWL_INVALID_STATION; | |
934 | ||
935 | ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); | |
936 | if (ret) { | |
937 | IWL_ERR(priv, "Unable to add station %pM\n", addr); | |
938 | return ret; | |
939 | } | |
940 | ||
941 | if (sta_id_r) | |
942 | *sta_id_r = sta_id; | |
943 | ||
f39c95e8 | 944 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 945 | priv->stations[sta_id].used |= IWL_STA_LOCAL; |
f39c95e8 | 946 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
947 | |
948 | /* Set up default rate scaling table in device's station table */ | |
f775aa06 | 949 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 | 950 | if (!link_cmd) { |
c745f55b WYG |
951 | IWL_ERR(priv, |
952 | "Unable to initialize rate scaling for station %pM.\n", | |
a30e3112 JB |
953 | addr); |
954 | return -ENOMEM; | |
955 | } | |
956 | ||
957 | ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); | |
958 | if (ret) | |
959 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); | |
960 | ||
f39c95e8 | 961 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 962 | priv->stations[sta_id].lq = link_cmd; |
f39c95e8 | 963 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
964 | |
965 | return 0; | |
966 | } | |
967 | ||
5a3d9882 JB |
968 | /* |
969 | * static WEP keys | |
970 | * | |
971 | * For each context, the device has a table of 4 static WEP keys | |
972 | * (one for each key index) that is updated with the following | |
973 | * commands. | |
974 | */ | |
975 | ||
a30e3112 JB |
976 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
977 | struct iwl_rxon_context *ctx, | |
978 | bool send_if_empty) | |
979 | { | |
980 | int i, not_empty = 0; | |
981 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
982 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
983 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
984 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
985 | struct iwl_host_cmd cmd = { | |
986 | .id = ctx->wep_key_cmd, | |
3fa50738 | 987 | .data = { wep_cmd, }, |
a30e3112 JB |
988 | .flags = CMD_SYNC, |
989 | }; | |
990 | ||
991 | might_sleep(); | |
992 | ||
993 | memset(wep_cmd, 0, cmd_size + | |
994 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
995 | ||
996 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
997 | wep_cmd->key[i].key_index = i; | |
998 | if (ctx->wep_keys[i].key_size) { | |
999 | wep_cmd->key[i].key_offset = i; | |
1000 | not_empty = 1; | |
1001 | } else { | |
1002 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
1003 | } | |
1004 | ||
1005 | wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; | |
1006 | memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, | |
1007 | ctx->wep_keys[i].key_size); | |
1008 | } | |
1009 | ||
1010 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
1011 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
1012 | ||
1013 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
1014 | ||
3fa50738 | 1015 | cmd.len[0] = cmd_size; |
a30e3112 JB |
1016 | |
1017 | if (not_empty || send_if_empty) | |
e6bb4c9c | 1018 | return iwl_trans_send_cmd(trans(priv), &cmd); |
a30e3112 JB |
1019 | else |
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | int iwl_restore_default_wep_keys(struct iwl_priv *priv, | |
1024 | struct iwl_rxon_context *ctx) | |
1025 | { | |
6ac2f839 | 1026 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1027 | |
1028 | return iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1029 | } | |
1030 | ||
1031 | int iwl_remove_default_wep_key(struct iwl_priv *priv, | |
1032 | struct iwl_rxon_context *ctx, | |
1033 | struct ieee80211_key_conf *keyconf) | |
1034 | { | |
1035 | int ret; | |
1036 | ||
6ac2f839 | 1037 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1038 | |
1039 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", | |
1040 | keyconf->keyidx); | |
1041 | ||
1042 | memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); | |
845a9c0d | 1043 | if (iwl_is_rfkill(priv->shrd)) { |
c745f55b WYG |
1044 | IWL_DEBUG_WEP(priv, |
1045 | "Not sending REPLY_WEPKEY command due to RFKILL.\n"); | |
a30e3112 JB |
1046 | /* but keys in device are clear anyway so return success */ |
1047 | return 0; | |
1048 | } | |
1049 | ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); | |
1050 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", | |
1051 | keyconf->keyidx, ret); | |
1052 | ||
1053 | return ret; | |
1054 | } | |
1055 | ||
1056 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
1057 | struct iwl_rxon_context *ctx, | |
1058 | struct ieee80211_key_conf *keyconf) | |
1059 | { | |
1060 | int ret; | |
1061 | ||
6ac2f839 | 1062 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1063 | |
1064 | if (keyconf->keylen != WEP_KEY_LEN_128 && | |
1065 | keyconf->keylen != WEP_KEY_LEN_64) { | |
c745f55b WYG |
1066 | IWL_DEBUG_WEP(priv, |
1067 | "Bad WEP key length %d\n", keyconf->keylen); | |
a30e3112 JB |
1068 | return -EINVAL; |
1069 | } | |
1070 | ||
5a3d9882 | 1071 | keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT; |
a30e3112 JB |
1072 | |
1073 | ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; | |
1074 | memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
1075 | keyconf->keylen); | |
1076 | ||
1077 | ret = iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1078 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", | |
1079 | keyconf->keylen, keyconf->keyidx, ret); | |
1080 | ||
1081 | return ret; | |
1082 | } | |
1083 | ||
5a3d9882 JB |
1084 | /* |
1085 | * dynamic (per-station) keys | |
1086 | * | |
1087 | * The dynamic keys are a little more complicated. The device has | |
1088 | * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys. | |
1089 | * These are linked to stations by a table that contains an index | |
1090 | * into the key table for each station/key index/{mcast,unicast}, | |
1091 | * i.e. it's basically an array of pointers like this: | |
1092 | * key_offset_t key_mapping[NUM_STATIONS][4][2]; | |
1093 | * (it really works differently, but you can think of it as such) | |
1094 | * | |
1095 | * The key uploading and linking happens in the same command, the | |
1096 | * add station command with STA_MODIFY_KEY_MASK. | |
1097 | */ | |
a30e3112 | 1098 | |
5a3d9882 JB |
1099 | static u8 iwlagn_key_sta_id(struct iwl_priv *priv, |
1100 | struct ieee80211_vif *vif, | |
1101 | struct ieee80211_sta *sta) | |
1102 | { | |
1103 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
1104 | u8 sta_id = IWL_INVALID_STATION; | |
1105 | ||
1106 | if (sta) | |
1107 | sta_id = iwl_sta_id(sta); | |
1108 | ||
1109 | /* | |
1110 | * The device expects GTKs for station interfaces to be | |
1111 | * installed as GTKs for the AP station. If we have no | |
1112 | * station ID, then use the ap_sta_id in that case. | |
1113 | */ | |
1114 | if (!sta && vif && vif_priv->ctx) { | |
1115 | switch (vif->type) { | |
1116 | case NL80211_IFTYPE_STATION: | |
1117 | sta_id = vif_priv->ctx->ap_sta_id; | |
1118 | break; | |
1119 | default: | |
1120 | /* | |
1121 | * In all other cases, the key will be | |
1122 | * used either for TX only or is bound | |
1123 | * to a station already. | |
1124 | */ | |
1125 | break; | |
1126 | } | |
1127 | } | |
a30e3112 | 1128 | |
5a3d9882 | 1129 | return sta_id; |
a30e3112 JB |
1130 | } |
1131 | ||
e1b1c087 JB |
1132 | static int iwlagn_send_sta_key(struct iwl_priv *priv, |
1133 | struct ieee80211_key_conf *keyconf, | |
1134 | u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, | |
1135 | u32 cmd_flags) | |
a30e3112 JB |
1136 | { |
1137 | unsigned long flags; | |
5a3d9882 | 1138 | __le16 key_flags; |
a30e3112 | 1139 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1140 | int i; |
e1b1c087 | 1141 | |
f39c95e8 | 1142 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
5a3d9882 | 1143 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
f39c95e8 | 1144 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 | 1145 | |
5a3d9882 JB |
1146 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1147 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK; | |
a30e3112 | 1148 | |
5a3d9882 JB |
1149 | switch (keyconf->cipher) { |
1150 | case WLAN_CIPHER_SUITE_CCMP: | |
1151 | key_flags |= STA_KEY_FLG_CCMP; | |
1152 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1153 | break; | |
1154 | case WLAN_CIPHER_SUITE_TKIP: | |
1155 | key_flags |= STA_KEY_FLG_TKIP; | |
1156 | sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32; | |
1157 | for (i = 0; i < 5; i++) | |
1158 | sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); | |
1159 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1160 | break; | |
1161 | case WLAN_CIPHER_SUITE_WEP104: | |
1162 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; | |
1163 | /* fall through */ | |
1164 | case WLAN_CIPHER_SUITE_WEP40: | |
1165 | key_flags |= STA_KEY_FLG_WEP; | |
1166 | memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen); | |
1167 | break; | |
1168 | default: | |
1169 | WARN_ON(1); | |
1170 | return -EINVAL; | |
1171 | } | |
a30e3112 | 1172 | |
5a3d9882 | 1173 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) |
a30e3112 JB |
1174 | key_flags |= STA_KEY_MULTICAST_MSK; |
1175 | ||
5a3d9882 JB |
1176 | /* key pointer (offset) */ |
1177 | sta_cmd.key.key_offset = keyconf->hw_key_idx; | |
a30e3112 | 1178 | |
5a3d9882 JB |
1179 | sta_cmd.key.key_flags = key_flags; |
1180 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
1181 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
a30e3112 | 1182 | |
5a3d9882 | 1183 | return iwl_send_add_sta(priv, &sta_cmd, cmd_flags); |
a30e3112 JB |
1184 | } |
1185 | ||
1186 | void iwl_update_tkip_key(struct iwl_priv *priv, | |
5a3d9882 | 1187 | struct ieee80211_vif *vif, |
a30e3112 JB |
1188 | struct ieee80211_key_conf *keyconf, |
1189 | struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) | |
1190 | { | |
5a3d9882 JB |
1191 | u8 sta_id = iwlagn_key_sta_id(priv, vif, sta); |
1192 | ||
1193 | if (sta_id == IWL_INVALID_STATION) | |
1194 | return; | |
a30e3112 JB |
1195 | |
1196 | if (iwl_scan_cancel(priv)) { | |
1197 | /* cancel scan failed, just live w/ bad key and rely | |
1198 | briefly on SW decryption */ | |
1199 | return; | |
1200 | } | |
1201 | ||
e1b1c087 JB |
1202 | iwlagn_send_sta_key(priv, keyconf, sta_id, |
1203 | iv32, phase1key, CMD_ASYNC); | |
a30e3112 JB |
1204 | } |
1205 | ||
1206 | int iwl_remove_dynamic_key(struct iwl_priv *priv, | |
1207 | struct iwl_rxon_context *ctx, | |
1208 | struct ieee80211_key_conf *keyconf, | |
5a3d9882 | 1209 | struct ieee80211_sta *sta) |
a30e3112 JB |
1210 | { |
1211 | unsigned long flags; | |
a30e3112 | 1212 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 JB |
1213 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
1214 | ||
1215 | /* if station isn't there, neither is the key */ | |
1216 | if (sta_id == IWL_INVALID_STATION) | |
1217 | return -ENOENT; | |
1218 | ||
f39c95e8 | 1219 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
5a3d9882 JB |
1220 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
1221 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) | |
1222 | sta_id = IWL_INVALID_STATION; | |
f39c95e8 | 1223 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
5a3d9882 JB |
1224 | |
1225 | if (sta_id == IWL_INVALID_STATION) | |
1226 | return 0; | |
a30e3112 | 1227 | |
6ac2f839 | 1228 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1229 | |
1230 | ctx->key_mapping_keys--; | |
1231 | ||
a30e3112 JB |
1232 | IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
1233 | keyconf->keyidx, sta_id); | |
1234 | ||
5a3d9882 JB |
1235 | if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table)) |
1236 | IWL_ERR(priv, "offset %d not used in uCode key table.\n", | |
1237 | keyconf->hw_key_idx); | |
a30e3112 | 1238 | |
5a3d9882 JB |
1239 | sta_cmd.key.key_flags = STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; |
1240 | sta_cmd.key.key_offset = WEP_INVALID_OFFSET; | |
1241 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
1242 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
a30e3112 JB |
1243 | |
1244 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1245 | } | |
1246 | ||
5a3d9882 JB |
1247 | int iwl_set_dynamic_key(struct iwl_priv *priv, |
1248 | struct iwl_rxon_context *ctx, | |
1249 | struct ieee80211_key_conf *keyconf, | |
1250 | struct ieee80211_sta *sta) | |
a30e3112 | 1251 | { |
5a3d9882 JB |
1252 | struct ieee80211_key_seq seq; |
1253 | u16 p1k[5]; | |
a30e3112 | 1254 | int ret; |
5a3d9882 JB |
1255 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
1256 | const u8 *addr; | |
1257 | ||
1258 | if (sta_id == IWL_INVALID_STATION) | |
1259 | return -EINVAL; | |
a30e3112 | 1260 | |
6ac2f839 | 1261 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 | 1262 | |
5a3d9882 JB |
1263 | keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv); |
1264 | if (keyconf->hw_key_idx == WEP_INVALID_OFFSET) | |
1265 | return -ENOSPC; | |
1266 | ||
a30e3112 | 1267 | ctx->key_mapping_keys++; |
a30e3112 JB |
1268 | |
1269 | switch (keyconf->cipher) { | |
a30e3112 | 1270 | case WLAN_CIPHER_SUITE_TKIP: |
5a3d9882 JB |
1271 | if (sta) |
1272 | addr = sta->addr; | |
1273 | else /* station mode case only */ | |
1274 | addr = ctx->active.bssid_addr; | |
1275 | ||
1276 | /* pre-fill phase 1 key into device cache */ | |
1277 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1278 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
e1b1c087 JB |
1279 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1280 | seq.tkip.iv32, p1k, CMD_SYNC); | |
a30e3112 | 1281 | break; |
5a3d9882 | 1282 | case WLAN_CIPHER_SUITE_CCMP: |
a30e3112 JB |
1283 | case WLAN_CIPHER_SUITE_WEP40: |
1284 | case WLAN_CIPHER_SUITE_WEP104: | |
e1b1c087 JB |
1285 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1286 | 0, NULL, CMD_SYNC); | |
a30e3112 JB |
1287 | break; |
1288 | default: | |
5a3d9882 | 1289 | IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher); |
a30e3112 JB |
1290 | ret = -EINVAL; |
1291 | } | |
1292 | ||
5a3d9882 JB |
1293 | if (ret) { |
1294 | ctx->key_mapping_keys--; | |
1295 | clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table); | |
1296 | } | |
1297 | ||
1298 | IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
a30e3112 | 1299 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
5a3d9882 | 1300 | sta ? sta->addr : NULL, ret); |
a30e3112 JB |
1301 | |
1302 | return ret; | |
1303 | } | |
1304 | ||
1305 | /** | |
1306 | * iwlagn_alloc_bcast_station - add broadcast station into driver's station table. | |
1307 | * | |
1308 | * This adds the broadcast station into the driver's station table | |
1309 | * and marks it driver active, so that it will be restored to the | |
1310 | * device at the next best time. | |
1311 | */ | |
1312 | int iwlagn_alloc_bcast_station(struct iwl_priv *priv, | |
1313 | struct iwl_rxon_context *ctx) | |
1314 | { | |
1315 | struct iwl_link_quality_cmd *link_cmd; | |
1316 | unsigned long flags; | |
1317 | u8 sta_id; | |
1318 | ||
f39c95e8 | 1319 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1320 | sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
1321 | if (sta_id == IWL_INVALID_STATION) { | |
1322 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); | |
f39c95e8 | 1323 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1324 | |
1325 | return -EINVAL; | |
1326 | } | |
1327 | ||
1328 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
1329 | priv->stations[sta_id].used |= IWL_STA_BCAST; | |
f39c95e8 | 1330 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 | 1331 | |
f775aa06 | 1332 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1333 | if (!link_cmd) { |
1334 | IWL_ERR(priv, | |
1335 | "Unable to initialize rate scaling for bcast station.\n"); | |
1336 | return -ENOMEM; | |
1337 | } | |
1338 | ||
f39c95e8 | 1339 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 | 1340 | priv->stations[sta_id].lq = link_cmd; |
f39c95e8 | 1341 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1342 | |
1343 | return 0; | |
1344 | } | |
1345 | ||
1346 | /** | |
1347 | * iwl_update_bcast_station - update broadcast station's LQ command | |
1348 | * | |
1349 | * Only used by iwlagn. Placed here to have all bcast station management | |
1350 | * code together. | |
1351 | */ | |
f775aa06 JB |
1352 | int iwl_update_bcast_station(struct iwl_priv *priv, |
1353 | struct iwl_rxon_context *ctx) | |
a30e3112 JB |
1354 | { |
1355 | unsigned long flags; | |
1356 | struct iwl_link_quality_cmd *link_cmd; | |
1357 | u8 sta_id = ctx->bcast_sta_id; | |
1358 | ||
f775aa06 | 1359 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1360 | if (!link_cmd) { |
1361 | IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); | |
1362 | return -ENOMEM; | |
1363 | } | |
1364 | ||
f39c95e8 | 1365 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1366 | if (priv->stations[sta_id].lq) |
1367 | kfree(priv->stations[sta_id].lq); | |
1368 | else | |
1369 | IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); | |
1370 | priv->stations[sta_id].lq = link_cmd; | |
f39c95e8 | 1371 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1372 | |
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | int iwl_update_bcast_stations(struct iwl_priv *priv) | |
1377 | { | |
1378 | struct iwl_rxon_context *ctx; | |
1379 | int ret = 0; | |
1380 | ||
1381 | for_each_context(priv, ctx) { | |
1382 | ret = iwl_update_bcast_station(priv, ctx); | |
1383 | if (ret) | |
1384 | break; | |
1385 | } | |
1386 | ||
1387 | return ret; | |
1388 | } | |
1389 | ||
1390 | /** | |
1391 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table | |
1392 | */ | |
1393 | int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) | |
1394 | { | |
1395 | unsigned long flags; | |
1396 | struct iwl_addsta_cmd sta_cmd; | |
1397 | ||
6ac2f839 | 1398 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1399 | |
1400 | /* Remove "disable" flag, to enable Tx for this TID */ | |
f39c95e8 | 1401 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1402 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
1403 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
1404 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1405 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 1406 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1407 | |
1408 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1409 | } | |
1410 | ||
1411 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1412 | int tid, u16 ssn) | |
1413 | { | |
1414 | unsigned long flags; | |
1415 | int sta_id; | |
1416 | struct iwl_addsta_cmd sta_cmd; | |
1417 | ||
6ac2f839 | 1418 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1419 | |
1420 | sta_id = iwl_sta_id(sta); | |
1421 | if (sta_id == IWL_INVALID_STATION) | |
1422 | return -ENXIO; | |
1423 | ||
f39c95e8 | 1424 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1425 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1426 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
1427 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
1428 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
1429 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1430 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 1431 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1432 | |
1433 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1434 | } | |
1435 | ||
1436 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1437 | int tid) | |
1438 | { | |
1439 | unsigned long flags; | |
1440 | int sta_id; | |
1441 | struct iwl_addsta_cmd sta_cmd; | |
1442 | ||
6ac2f839 | 1443 | lockdep_assert_held(&priv->shrd->mutex); |
a30e3112 JB |
1444 | |
1445 | sta_id = iwl_sta_id(sta); | |
1446 | if (sta_id == IWL_INVALID_STATION) { | |
1447 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
1448 | return -ENXIO; | |
1449 | } | |
1450 | ||
f39c95e8 | 1451 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1452 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1453 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
1454 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
1455 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1456 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
f39c95e8 | 1457 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1458 | |
1459 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1460 | } | |
1461 | ||
ae79d23d | 1462 | static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) |
a30e3112 JB |
1463 | { |
1464 | unsigned long flags; | |
1465 | ||
f39c95e8 | 1466 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1467 | priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK; |
1468 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
1469 | priv->stations[sta_id].sta.sta.modify_mask = 0; | |
1470 | priv->stations[sta_id].sta.sleep_tx_count = 0; | |
1471 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1472 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
f39c95e8 | 1473 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1474 | |
1475 | } | |
1476 | ||
1477 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) | |
1478 | { | |
1479 | unsigned long flags; | |
1480 | ||
f39c95e8 | 1481 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1482 | priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK; |
1483 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
1484 | priv->stations[sta_id].sta.sta.modify_mask = | |
1485 | STA_MODIFY_SLEEP_TX_COUNT_MSK; | |
1486 | priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt); | |
1487 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1488 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
f39c95e8 | 1489 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
a30e3112 JB |
1490 | |
1491 | } | |
ae79d23d JB |
1492 | |
1493 | void iwlagn_mac_sta_notify(struct ieee80211_hw *hw, | |
1494 | struct ieee80211_vif *vif, | |
1495 | enum sta_notify_cmd cmd, | |
1496 | struct ieee80211_sta *sta) | |
1497 | { | |
1498 | struct iwl_priv *priv = hw->priv; | |
1499 | struct iwl_station_priv *sta_priv = (void *)sta->drv_priv; | |
1500 | int sta_id; | |
1501 | ||
770c72c4 WYG |
1502 | IWL_DEBUG_MAC80211(priv, "enter\n"); |
1503 | ||
ae79d23d JB |
1504 | switch (cmd) { |
1505 | case STA_NOTIFY_SLEEP: | |
1506 | WARN_ON(!sta_priv->client); | |
1507 | sta_priv->asleep = true; | |
1508 | if (atomic_read(&sta_priv->pending_frames) > 0) | |
1509 | ieee80211_sta_block_awake(hw, sta, true); | |
1510 | break; | |
1511 | case STA_NOTIFY_AWAKE: | |
1512 | WARN_ON(!sta_priv->client); | |
1513 | if (!sta_priv->asleep) | |
1514 | break; | |
1515 | sta_priv->asleep = false; | |
1516 | sta_id = iwl_sta_id(sta); | |
1517 | if (sta_id != IWL_INVALID_STATION) | |
1518 | iwl_sta_modify_ps_wake(priv, sta_id); | |
1519 | break; | |
1520 | default: | |
1521 | break; | |
1522 | } | |
770c72c4 | 1523 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
ae79d23d | 1524 | } |