Commit | Line | Data |
---|---|---|
a30e3112 JB |
1 | /****************************************************************************** |
2 | * | |
51368bf7 | 3 | * Copyright(c) 2003 - 2014 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 | *****************************************************************************/ | |
e7a0d0c4 | 29 | #include <linux/etherdevice.h> |
a30e3112 | 30 | #include <net/mac80211.h> |
bdfbf092 | 31 | #include "iwl-trans.h" |
1023fdc4 JB |
32 | #include "dev.h" |
33 | #include "agn.h" | |
a30e3112 | 34 | |
f32cadfc MV |
35 | const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
36 | ||
2da424b0 | 37 | static int iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
c745f55b | 38 | { |
fa23cb04 JB |
39 | lockdep_assert_held(&priv->sta_lock); |
40 | ||
2da424b0 WYG |
41 | if (sta_id >= IWLAGN_STATION_COUNT) { |
42 | IWL_ERR(priv, "invalid sta_id %u", sta_id); | |
43 | return -EINVAL; | |
44 | } | |
c745f55b WYG |
45 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) |
46 | IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u " | |
47 | "addr %pM\n", | |
48 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
49 | ||
50 | if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) { | |
51 | IWL_DEBUG_ASSOC(priv, | |
52 | "STA id %u addr %pM already present in uCode " | |
53 | "(according to driver)\n", | |
54 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
55 | } else { | |
56 | priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; | |
57 | IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n", | |
58 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
59 | } | |
2da424b0 | 60 | return 0; |
c745f55b WYG |
61 | } |
62 | ||
63 | static int iwl_process_add_sta_resp(struct iwl_priv *priv, | |
64 | struct iwl_addsta_cmd *addsta, | |
65 | struct iwl_rx_packet *pkt) | |
66 | { | |
f8d7c1a1 | 67 | struct iwl_add_sta_resp *add_sta_resp = (void *)pkt->data; |
c745f55b | 68 | u8 sta_id = addsta->sta.sta_id; |
c745f55b WYG |
69 | int ret = -EIO; |
70 | ||
71 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { | |
72 | IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n", | |
73 | pkt->hdr.flags); | |
74 | return ret; | |
75 | } | |
76 | ||
77 | IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n", | |
78 | sta_id); | |
79 | ||
2bfb5092 | 80 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 81 | |
f8d7c1a1 | 82 | switch (add_sta_resp->status) { |
c745f55b WYG |
83 | case ADD_STA_SUCCESS_MSK: |
84 | IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n"); | |
2da424b0 | 85 | ret = iwl_sta_ucode_activate(priv, sta_id); |
c745f55b WYG |
86 | break; |
87 | case ADD_STA_NO_ROOM_IN_TABLE: | |
88 | IWL_ERR(priv, "Adding station %d failed, no room in table.\n", | |
89 | sta_id); | |
90 | break; | |
91 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: | |
92 | IWL_ERR(priv, "Adding station %d failed, no block ack " | |
93 | "resource.\n", sta_id); | |
94 | break; | |
95 | case ADD_STA_MODIFY_NON_EXIST_STA: | |
96 | IWL_ERR(priv, "Attempting to modify non-existing station %d\n", | |
97 | sta_id); | |
98 | break; | |
99 | default: | |
100 | IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n", | |
f8d7c1a1 | 101 | add_sta_resp->status); |
c745f55b WYG |
102 | break; |
103 | } | |
104 | ||
105 | IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n", | |
106 | priv->stations[sta_id].sta.mode == | |
107 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
108 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
109 | ||
110 | /* | |
111 | * XXX: The MAC address in the command buffer is often changed from | |
112 | * the original sent to the device. That is, the MAC address | |
113 | * written to the command buffer often is not the same MAC address | |
114 | * read from the command buffer when the command returns. This | |
115 | * issue has not yet been resolved and this debugging is left to | |
116 | * observe the problem. | |
117 | */ | |
118 | IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n", | |
119 | priv->stations[sta_id].sta.mode == | |
120 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
121 | addsta->sta.addr); | |
2bfb5092 | 122 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
123 | |
124 | return ret; | |
125 | } | |
126 | ||
48a2d66f | 127 | int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, |
c745f55b WYG |
128 | struct iwl_device_cmd *cmd) |
129 | { | |
130 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
c745f55b | 131 | |
513aa3b0 JB |
132 | if (!cmd) |
133 | return 0; | |
134 | ||
135 | return iwl_process_add_sta_resp(priv, (void *)cmd->payload, pkt); | |
c745f55b WYG |
136 | } |
137 | ||
c745f55b WYG |
138 | int iwl_send_add_sta(struct iwl_priv *priv, |
139 | struct iwl_addsta_cmd *sta, u8 flags) | |
140 | { | |
141 | int ret = 0; | |
c745f55b WYG |
142 | struct iwl_host_cmd cmd = { |
143 | .id = REPLY_ADD_STA, | |
144 | .flags = flags, | |
69b172f7 JB |
145 | .data = { sta, }, |
146 | .len = { sizeof(*sta), }, | |
c745f55b WYG |
147 | }; |
148 | u8 sta_id __maybe_unused = sta->sta.sta_id; | |
149 | ||
150 | IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n", | |
151 | sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : ""); | |
152 | ||
153 | if (!(flags & CMD_ASYNC)) { | |
38c0f334 | 154 | cmd.flags |= CMD_WANT_SKB; |
c745f55b WYG |
155 | might_sleep(); |
156 | } | |
157 | ||
e10a0533 | 158 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
159 | |
160 | if (ret || (flags & CMD_ASYNC)) | |
161 | return ret; | |
162 | /*else the command was successfully sent in SYNC mode, need to free | |
163 | * the reply page */ | |
164 | ||
65b94a4a | 165 | iwl_free_resp(&cmd); |
c745f55b WYG |
166 | |
167 | if (cmd.handler_status) | |
168 | IWL_ERR(priv, "%s - error in the CMD response %d", __func__, | |
169 | cmd.handler_status); | |
170 | ||
171 | return cmd.handler_status; | |
172 | } | |
173 | ||
5edc565d MV |
174 | bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, |
175 | struct iwl_rxon_context *ctx, | |
e1a0c6b3 | 176 | struct ieee80211_sta *sta) |
5edc565d MV |
177 | { |
178 | if (!ctx->ht.enabled || !ctx->ht.is_40mhz) | |
179 | return false; | |
180 | ||
26a7ca9a JB |
181 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
182 | if (priv->disable_ht40) | |
183 | return false; | |
184 | #endif | |
185 | ||
e1a0c6b3 JB |
186 | /* special case for RXON */ |
187 | if (!sta) | |
26a7ca9a JB |
188 | return true; |
189 | ||
e1a0c6b3 | 190 | return sta->bandwidth >= IEEE80211_STA_RX_BW_40; |
5edc565d MV |
191 | } |
192 | ||
ab0bd5b3 JB |
193 | static void iwl_sta_calc_ht_flags(struct iwl_priv *priv, |
194 | struct ieee80211_sta *sta, | |
195 | struct iwl_rxon_context *ctx, | |
196 | __le32 *flags, __le32 *mask) | |
c745f55b WYG |
197 | { |
198 | struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; | |
c745f55b | 199 | |
ab0bd5b3 JB |
200 | *mask = STA_FLG_RTS_MIMO_PROT_MSK | |
201 | STA_FLG_MIMO_DIS_MSK | | |
202 | STA_FLG_HT40_EN_MSK | | |
203 | STA_FLG_MAX_AGG_SIZE_MSK | | |
204 | STA_FLG_AGG_MPDU_DENSITY_MSK; | |
205 | *flags = 0; | |
206 | ||
c745f55b | 207 | if (!sta || !sta_ht_inf->ht_supported) |
ab0bd5b3 | 208 | return; |
c745f55b | 209 | |
ab0bd5b3 | 210 | IWL_DEBUG_INFO(priv, "STA %pM SM PS mode: %s\n", |
a35e2708 | 211 | sta->addr, |
af0ed69b | 212 | (sta->smps_mode == IEEE80211_SMPS_STATIC) ? |
c745f55b | 213 | "static" : |
af0ed69b | 214 | (sta->smps_mode == IEEE80211_SMPS_DYNAMIC) ? |
c745f55b WYG |
215 | "dynamic" : "disabled"); |
216 | ||
af0ed69b JB |
217 | switch (sta->smps_mode) { |
218 | case IEEE80211_SMPS_STATIC: | |
ab0bd5b3 | 219 | *flags |= STA_FLG_MIMO_DIS_MSK; |
c745f55b | 220 | break; |
af0ed69b | 221 | case IEEE80211_SMPS_DYNAMIC: |
ab0bd5b3 | 222 | *flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
c745f55b | 223 | break; |
af0ed69b | 224 | case IEEE80211_SMPS_OFF: |
c745f55b WYG |
225 | break; |
226 | default: | |
af0ed69b | 227 | IWL_WARN(priv, "Invalid MIMO PS mode %d\n", sta->smps_mode); |
c745f55b WYG |
228 | break; |
229 | } | |
230 | ||
ab0bd5b3 JB |
231 | *flags |= cpu_to_le32( |
232 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
c745f55b | 233 | |
ab0bd5b3 JB |
234 | *flags |= cpu_to_le32( |
235 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
c745f55b | 236 | |
e1a0c6b3 | 237 | if (iwl_is_ht40_tx_allowed(priv, ctx, sta)) |
ab0bd5b3 JB |
238 | *flags |= STA_FLG_HT40_EN_MSK; |
239 | } | |
240 | ||
241 | int iwl_sta_update_ht(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
242 | struct ieee80211_sta *sta) | |
243 | { | |
244 | u8 sta_id = iwl_sta_id(sta); | |
245 | __le32 flags, mask; | |
246 | struct iwl_addsta_cmd cmd; | |
247 | ||
248 | if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) | |
249 | return -EINVAL; | |
c745f55b | 250 | |
ab0bd5b3 JB |
251 | iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); |
252 | ||
253 | spin_lock_bh(&priv->sta_lock); | |
254 | priv->stations[sta_id].sta.station_flags &= ~mask; | |
255 | priv->stations[sta_id].sta.station_flags |= flags; | |
256 | spin_unlock_bh(&priv->sta_lock); | |
257 | ||
258 | memset(&cmd, 0, sizeof(cmd)); | |
259 | cmd.mode = STA_CONTROL_MODIFY_MSK; | |
260 | cmd.station_flags_msk = mask; | |
261 | cmd.station_flags = flags; | |
262 | cmd.sta.sta_id = sta_id; | |
263 | ||
264 | return iwl_send_add_sta(priv, &cmd, CMD_SYNC); | |
265 | } | |
266 | ||
267 | static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, | |
268 | struct ieee80211_sta *sta, | |
269 | struct iwl_rxon_context *ctx) | |
270 | { | |
271 | __le32 flags, mask; | |
272 | ||
273 | iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); | |
274 | ||
275 | lockdep_assert_held(&priv->sta_lock); | |
276 | priv->stations[index].sta.station_flags &= ~mask; | |
277 | priv->stations[index].sta.station_flags |= flags; | |
c745f55b WYG |
278 | } |
279 | ||
280 | /** | |
281 | * iwl_prep_station - Prepare station information for addition | |
282 | * | |
283 | * should be called with sta_lock held | |
284 | */ | |
285 | u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
286 | const u8 *addr, bool is_ap, struct ieee80211_sta *sta) | |
287 | { | |
288 | struct iwl_station_entry *station; | |
289 | int i; | |
290 | u8 sta_id = IWL_INVALID_STATION; | |
291 | ||
292 | if (is_ap) | |
293 | sta_id = ctx->ap_sta_id; | |
294 | else if (is_broadcast_ether_addr(addr)) | |
295 | sta_id = ctx->bcast_sta_id; | |
296 | else | |
297 | for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) { | |
2e42e474 JP |
298 | if (ether_addr_equal(priv->stations[i].sta.sta.addr, |
299 | addr)) { | |
c745f55b WYG |
300 | sta_id = i; |
301 | break; | |
302 | } | |
303 | ||
304 | if (!priv->stations[i].used && | |
305 | sta_id == IWL_INVALID_STATION) | |
306 | sta_id = i; | |
307 | } | |
308 | ||
309 | /* | |
310 | * These two conditions have the same outcome, but keep them | |
311 | * separate | |
312 | */ | |
313 | if (unlikely(sta_id == IWL_INVALID_STATION)) | |
314 | return sta_id; | |
315 | ||
316 | /* | |
317 | * uCode is not able to deal with multiple requests to add a | |
318 | * station. Keep track if one is in progress so that we do not send | |
319 | * another. | |
320 | */ | |
321 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
322 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
323 | "added.\n", sta_id); | |
324 | return sta_id; | |
325 | } | |
326 | ||
327 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
328 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && | |
2e42e474 | 329 | ether_addr_equal(priv->stations[sta_id].sta.sta.addr, addr)) { |
c745f55b WYG |
330 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " |
331 | "adding again.\n", sta_id, addr); | |
332 | return sta_id; | |
333 | } | |
334 | ||
335 | station = &priv->stations[sta_id]; | |
336 | station->used = IWL_STA_DRIVER_ACTIVE; | |
337 | IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", | |
338 | sta_id, addr); | |
339 | priv->num_stations++; | |
340 | ||
341 | /* Set up the REPLY_ADD_STA command to send to device */ | |
342 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); | |
343 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
344 | station->sta.mode = 0; | |
345 | station->sta.sta.sta_id = sta_id; | |
346 | station->sta.station_flags = ctx->station_flags; | |
347 | station->ctxid = ctx->ctxid; | |
348 | ||
349 | if (sta) { | |
350 | struct iwl_station_priv *sta_priv; | |
351 | ||
352 | sta_priv = (void *)sta->drv_priv; | |
353 | sta_priv->ctx = ctx; | |
354 | } | |
355 | ||
356 | /* | |
357 | * OK to call unconditionally, since local stations (IBSS BSSID | |
358 | * STA and broadcast STA) pass in a NULL sta, and mac80211 | |
359 | * doesn't allow HT IBSS. | |
360 | */ | |
361 | iwl_set_ht_add_station(priv, sta_id, sta, ctx); | |
362 | ||
363 | return sta_id; | |
364 | ||
365 | } | |
366 | ||
367 | #define STA_WAIT_TIMEOUT (HZ/2) | |
368 | ||
369 | /** | |
370 | * iwl_add_station_common - | |
371 | */ | |
372 | int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
373 | const u8 *addr, bool is_ap, | |
374 | struct ieee80211_sta *sta, u8 *sta_id_r) | |
375 | { | |
c745f55b WYG |
376 | int ret = 0; |
377 | u8 sta_id; | |
378 | struct iwl_addsta_cmd sta_cmd; | |
379 | ||
380 | *sta_id_r = 0; | |
fa23cb04 | 381 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
382 | sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta); |
383 | if (sta_id == IWL_INVALID_STATION) { | |
384 | IWL_ERR(priv, "Unable to prepare station %pM for addition\n", | |
385 | addr); | |
fa23cb04 | 386 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
387 | return -EINVAL; |
388 | } | |
389 | ||
390 | /* | |
391 | * uCode is not able to deal with multiple requests to add a | |
392 | * station. Keep track if one is in progress so that we do not send | |
393 | * another. | |
394 | */ | |
395 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
396 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
397 | "added.\n", sta_id); | |
fa23cb04 | 398 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
399 | return -EEXIST; |
400 | } | |
401 | ||
402 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
403 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
404 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " | |
405 | "adding again.\n", sta_id, addr); | |
fa23cb04 | 406 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
407 | return -EEXIST; |
408 | } | |
409 | ||
410 | priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS; | |
411 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, | |
412 | sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 413 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
414 | |
415 | /* Add station to device's station table */ | |
416 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
417 | if (ret) { | |
fa23cb04 | 418 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
419 | IWL_ERR(priv, "Adding station %pM failed.\n", |
420 | priv->stations[sta_id].sta.sta.addr); | |
421 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
422 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
fa23cb04 | 423 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
424 | } |
425 | *sta_id_r = sta_id; | |
426 | return ret; | |
427 | } | |
428 | ||
429 | /** | |
430 | * iwl_sta_ucode_deactivate - deactivate ucode status for a station | |
c745f55b WYG |
431 | */ |
432 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) | |
433 | { | |
fa23cb04 JB |
434 | lockdep_assert_held(&priv->sta_lock); |
435 | ||
c745f55b WYG |
436 | /* Ucode must be active and driver must be non active */ |
437 | if ((priv->stations[sta_id].used & | |
438 | (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != | |
439 | IWL_STA_UCODE_ACTIVE) | |
440 | IWL_ERR(priv, "removed non active STA %u\n", sta_id); | |
441 | ||
442 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; | |
443 | ||
444 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); | |
445 | IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); | |
446 | } | |
447 | ||
448 | static int iwl_send_remove_station(struct iwl_priv *priv, | |
449 | const u8 *addr, int sta_id, | |
450 | bool temporary) | |
451 | { | |
452 | struct iwl_rx_packet *pkt; | |
453 | int ret; | |
c745f55b WYG |
454 | struct iwl_rem_sta_cmd rm_sta_cmd; |
455 | ||
456 | struct iwl_host_cmd cmd = { | |
457 | .id = REPLY_REMOVE_STA, | |
458 | .len = { sizeof(struct iwl_rem_sta_cmd), }, | |
459 | .flags = CMD_SYNC, | |
460 | .data = { &rm_sta_cmd, }, | |
461 | }; | |
462 | ||
463 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
464 | rm_sta_cmd.num_sta = 1; | |
465 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); | |
466 | ||
467 | cmd.flags |= CMD_WANT_SKB; | |
468 | ||
e10a0533 | 469 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
470 | |
471 | if (ret) | |
472 | return ret; | |
473 | ||
65b94a4a | 474 | pkt = cmd.resp_pkt; |
c745f55b WYG |
475 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
476 | IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n", | |
477 | pkt->hdr.flags); | |
478 | ret = -EIO; | |
479 | } | |
480 | ||
481 | if (!ret) { | |
f8d7c1a1 JB |
482 | struct iwl_rem_sta_resp *rem_sta_resp = (void *)pkt->data; |
483 | switch (rem_sta_resp->status) { | |
c745f55b WYG |
484 | case REM_STA_SUCCESS_MSK: |
485 | if (!temporary) { | |
fa23cb04 | 486 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 487 | iwl_sta_ucode_deactivate(priv, sta_id); |
fa23cb04 | 488 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
489 | } |
490 | IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); | |
491 | break; | |
492 | default: | |
493 | ret = -EIO; | |
494 | IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); | |
495 | break; | |
496 | } | |
497 | } | |
65b94a4a | 498 | iwl_free_resp(&cmd); |
c745f55b WYG |
499 | |
500 | return ret; | |
501 | } | |
502 | ||
503 | /** | |
504 | * iwl_remove_station - Remove driver's knowledge of station. | |
505 | */ | |
506 | int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, | |
507 | const u8 *addr) | |
508 | { | |
855c2ee8 | 509 | u8 tid; |
c745f55b | 510 | |
83626404 | 511 | if (!iwl_is_ready(priv)) { |
c745f55b WYG |
512 | IWL_DEBUG_INFO(priv, |
513 | "Unable to remove station %pM, device not ready.\n", | |
514 | addr); | |
515 | /* | |
516 | * It is typical for stations to be removed when we are | |
517 | * going down. Return success since device will be down | |
518 | * soon anyway | |
519 | */ | |
520 | return 0; | |
521 | } | |
522 | ||
523 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", | |
524 | sta_id, addr); | |
525 | ||
526 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) | |
527 | return -EINVAL; | |
528 | ||
fa23cb04 | 529 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
530 | |
531 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
532 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", | |
533 | addr); | |
534 | goto out_err; | |
535 | } | |
536 | ||
537 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
538 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", | |
539 | addr); | |
540 | goto out_err; | |
541 | } | |
542 | ||
543 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { | |
544 | kfree(priv->stations[sta_id].lq); | |
545 | priv->stations[sta_id].lq = NULL; | |
546 | } | |
547 | ||
855c2ee8 EG |
548 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) |
549 | memset(&priv->tid_data[sta_id][tid], 0, | |
550 | sizeof(priv->tid_data[sta_id][tid])); | |
551 | ||
c745f55b WYG |
552 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
553 | ||
554 | priv->num_stations--; | |
555 | ||
556 | if (WARN_ON(priv->num_stations < 0)) | |
557 | priv->num_stations = 0; | |
558 | ||
fa23cb04 | 559 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
560 | |
561 | return iwl_send_remove_station(priv, addr, sta_id, false); | |
562 | out_err: | |
fa23cb04 | 563 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
564 | return -EINVAL; |
565 | } | |
566 | ||
97420515 JB |
567 | void iwl_deactivate_station(struct iwl_priv *priv, const u8 sta_id, |
568 | const u8 *addr) | |
569 | { | |
570 | u8 tid; | |
571 | ||
572 | if (!iwl_is_ready(priv)) { | |
573 | IWL_DEBUG_INFO(priv, | |
574 | "Unable to remove station %pM, device not ready.\n", | |
575 | addr); | |
576 | return; | |
577 | } | |
578 | ||
579 | IWL_DEBUG_ASSOC(priv, "Deactivating STA: %pM (%d)\n", addr, sta_id); | |
580 | ||
581 | if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) | |
582 | return; | |
583 | ||
584 | spin_lock_bh(&priv->sta_lock); | |
585 | ||
586 | WARN_ON_ONCE(!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)); | |
587 | ||
588 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) | |
589 | memset(&priv->tid_data[sta_id][tid], 0, | |
590 | sizeof(priv->tid_data[sta_id][tid])); | |
591 | ||
592 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
ec6f678c | 593 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
97420515 JB |
594 | |
595 | priv->num_stations--; | |
596 | ||
597 | if (WARN_ON_ONCE(priv->num_stations < 0)) | |
598 | priv->num_stations = 0; | |
599 | ||
600 | spin_unlock_bh(&priv->sta_lock); | |
601 | } | |
602 | ||
4dcba6d3 JB |
603 | static void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
604 | u8 sta_id, struct iwl_link_quality_cmd *link_cmd) | |
605 | { | |
606 | int i, r; | |
607 | u32 rate_flags = 0; | |
608 | __le32 rate_n_flags; | |
609 | ||
610 | lockdep_assert_held(&priv->mutex); | |
611 | ||
612 | memset(link_cmd, 0, sizeof(*link_cmd)); | |
613 | ||
614 | /* Set up the rate scaling to start at selected rate, fall back | |
615 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
616 | if (priv->band == IEEE80211_BAND_5GHZ) | |
617 | r = IWL_RATE_6M_INDEX; | |
618 | else if (ctx && ctx->vif && ctx->vif->p2p) | |
619 | r = IWL_RATE_6M_INDEX; | |
620 | else | |
621 | r = IWL_RATE_1M_INDEX; | |
622 | ||
623 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
624 | rate_flags |= RATE_MCS_CCK_MSK; | |
625 | ||
b7998c8b | 626 | rate_flags |= first_antenna(priv->nvm_data->valid_tx_ant) << |
4dcba6d3 JB |
627 | RATE_MCS_ANT_POS; |
628 | rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); | |
629 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
630 | link_cmd->rs_table[i].rate_n_flags = rate_n_flags; | |
631 | ||
632 | link_cmd->general_params.single_stream_ant_msk = | |
b7998c8b | 633 | first_antenna(priv->nvm_data->valid_tx_ant); |
4dcba6d3 JB |
634 | |
635 | link_cmd->general_params.dual_stream_ant_msk = | |
b7998c8b EL |
636 | priv->nvm_data->valid_tx_ant & |
637 | ~first_antenna(priv->nvm_data->valid_tx_ant); | |
4dcba6d3 JB |
638 | if (!link_cmd->general_params.dual_stream_ant_msk) { |
639 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; | |
b7998c8b | 640 | } else if (num_of_ant(priv->nvm_data->valid_tx_ant) == 2) { |
4dcba6d3 | 641 | link_cmd->general_params.dual_stream_ant_msk = |
b7998c8b | 642 | priv->nvm_data->valid_tx_ant; |
4dcba6d3 JB |
643 | } |
644 | ||
645 | link_cmd->agg_params.agg_dis_start_th = | |
646 | LINK_QUAL_AGG_DISABLE_START_DEF; | |
647 | link_cmd->agg_params.agg_time_limit = | |
648 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); | |
649 | ||
650 | link_cmd->sta_id = sta_id; | |
651 | } | |
652 | ||
c745f55b WYG |
653 | /** |
654 | * iwl_clear_ucode_stations - clear ucode station table bits | |
655 | * | |
656 | * This function clears all the bits in the driver indicating | |
657 | * which stations are active in the ucode. Call when something | |
658 | * other than explicit station management would cause this in | |
659 | * the ucode, e.g. unassociated RXON. | |
660 | */ | |
661 | void iwl_clear_ucode_stations(struct iwl_priv *priv, | |
662 | struct iwl_rxon_context *ctx) | |
663 | { | |
664 | int i; | |
c745f55b WYG |
665 | bool cleared = false; |
666 | ||
667 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); | |
668 | ||
fa23cb04 | 669 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
670 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
671 | if (ctx && ctx->ctxid != priv->stations[i].ctxid) | |
672 | continue; | |
673 | ||
674 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { | |
675 | IWL_DEBUG_INFO(priv, | |
676 | "Clearing ucode active for station %d\n", i); | |
677 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
678 | cleared = true; | |
679 | } | |
680 | } | |
fa23cb04 | 681 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
682 | |
683 | if (!cleared) | |
684 | IWL_DEBUG_INFO(priv, | |
685 | "No active stations found to be cleared\n"); | |
686 | } | |
687 | ||
688 | /** | |
689 | * iwl_restore_stations() - Restore driver known stations to device | |
690 | * | |
691 | * All stations considered active by driver, but not present in ucode, is | |
692 | * restored. | |
693 | * | |
694 | * Function sleeps. | |
695 | */ | |
696 | void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
697 | { | |
698 | struct iwl_addsta_cmd sta_cmd; | |
63b77bf4 | 699 | static const struct iwl_link_quality_cmd zero_lq = {}; |
c745f55b | 700 | struct iwl_link_quality_cmd lq; |
c745f55b WYG |
701 | int i; |
702 | bool found = false; | |
703 | int ret; | |
704 | bool send_lq; | |
705 | ||
83626404 | 706 | if (!iwl_is_ready(priv)) { |
c745f55b WYG |
707 | IWL_DEBUG_INFO(priv, |
708 | "Not ready yet, not restoring any stations.\n"); | |
709 | return; | |
710 | } | |
711 | ||
712 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); | |
fa23cb04 | 713 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
714 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
715 | if (ctx->ctxid != priv->stations[i].ctxid) | |
716 | continue; | |
717 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && | |
718 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { | |
719 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", | |
720 | priv->stations[i].sta.sta.addr); | |
721 | priv->stations[i].sta.mode = 0; | |
722 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; | |
723 | found = true; | |
724 | } | |
725 | } | |
726 | ||
727 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
728 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { | |
729 | memcpy(&sta_cmd, &priv->stations[i].sta, | |
730 | sizeof(struct iwl_addsta_cmd)); | |
731 | send_lq = false; | |
732 | if (priv->stations[i].lq) { | |
15b86bff | 733 | if (priv->wowlan) |
c745f55b WYG |
734 | iwl_sta_fill_lq(priv, ctx, i, &lq); |
735 | else | |
736 | memcpy(&lq, priv->stations[i].lq, | |
737 | sizeof(struct iwl_link_quality_cmd)); | |
63b77bf4 | 738 | |
a8778369 | 739 | if (memcmp(&lq, &zero_lq, sizeof(lq))) |
63b77bf4 | 740 | send_lq = true; |
c745f55b | 741 | } |
fa23cb04 | 742 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
743 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
744 | if (ret) { | |
fa23cb04 | 745 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
746 | IWL_ERR(priv, "Adding station %pM failed.\n", |
747 | priv->stations[i].sta.sta.addr); | |
748 | priv->stations[i].used &= | |
749 | ~IWL_STA_DRIVER_ACTIVE; | |
750 | priv->stations[i].used &= | |
751 | ~IWL_STA_UCODE_INPROGRESS; | |
f4c37176 | 752 | continue; |
c745f55b WYG |
753 | } |
754 | /* | |
755 | * Rate scaling has already been initialized, send | |
756 | * current LQ command | |
757 | */ | |
758 | if (send_lq) | |
759 | iwl_send_lq_cmd(priv, ctx, &lq, | |
760 | CMD_SYNC, true); | |
fa23cb04 | 761 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
762 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
763 | } | |
764 | } | |
765 | ||
fa23cb04 | 766 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
767 | if (!found) |
768 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
769 | "no stations to be restored.\n"); | |
770 | else | |
771 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
772 | "complete.\n"); | |
773 | } | |
774 | ||
c745f55b WYG |
775 | int iwl_get_free_ucode_key_offset(struct iwl_priv *priv) |
776 | { | |
777 | int i; | |
778 | ||
779 | for (i = 0; i < priv->sta_key_max_num; i++) | |
780 | if (!test_and_set_bit(i, &priv->ucode_key_table)) | |
781 | return i; | |
782 | ||
783 | return WEP_INVALID_OFFSET; | |
784 | } | |
785 | ||
786 | void iwl_dealloc_bcast_stations(struct iwl_priv *priv) | |
787 | { | |
c745f55b WYG |
788 | int i; |
789 | ||
fa23cb04 | 790 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
791 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
792 | if (!(priv->stations[i].used & IWL_STA_BCAST)) | |
793 | continue; | |
794 | ||
795 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
796 | priv->num_stations--; | |
797 | if (WARN_ON(priv->num_stations < 0)) | |
798 | priv->num_stations = 0; | |
799 | kfree(priv->stations[i].lq); | |
800 | priv->stations[i].lq = NULL; | |
801 | } | |
fa23cb04 | 802 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
803 | } |
804 | ||
805 | #ifdef CONFIG_IWLWIFI_DEBUG | |
806 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
807 | struct iwl_link_quality_cmd *lq) | |
808 | { | |
809 | int i; | |
810 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); | |
811 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", | |
812 | lq->general_params.single_stream_ant_msk, | |
813 | lq->general_params.dual_stream_ant_msk); | |
814 | ||
815 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
816 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", | |
817 | i, lq->rs_table[i].rate_n_flags); | |
818 | } | |
819 | #else | |
820 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
821 | struct iwl_link_quality_cmd *lq) | |
822 | { | |
823 | } | |
824 | #endif | |
825 | ||
826 | /** | |
827 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
828 | * | |
829 | * It sometimes happens when a HT rate has been in use and we | |
830 | * loose connectivity with AP then mac80211 will first tell us that the | |
831 | * current channel is not HT anymore before removing the station. In such a | |
832 | * scenario the RXON flags will be updated to indicate we are not | |
833 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
834 | * Test for this to prevent driver from sending LQ command between the time | |
835 | * RXON flags are updated and when LQ command is updated. | |
836 | */ | |
837 | static bool is_lq_table_valid(struct iwl_priv *priv, | |
838 | struct iwl_rxon_context *ctx, | |
839 | struct iwl_link_quality_cmd *lq) | |
840 | { | |
841 | int i; | |
842 | ||
843 | if (ctx->ht.enabled) | |
844 | return true; | |
845 | ||
846 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", | |
847 | ctx->active.channel); | |
848 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
849 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & | |
850 | RATE_MCS_HT_MSK) { | |
851 | IWL_DEBUG_INFO(priv, | |
852 | "index %d of LQ expects HT channel\n", | |
853 | i); | |
854 | return false; | |
855 | } | |
856 | } | |
857 | return true; | |
858 | } | |
859 | ||
860 | /** | |
861 | * iwl_send_lq_cmd() - Send link quality command | |
862 | * @init: This command is sent as part of station initialization right | |
863 | * after station has been added. | |
864 | * | |
865 | * The link quality command is sent as the last step of station creation. | |
866 | * This is the special case in which init is set and we call a callback in | |
867 | * this case to clear the state indicating that station creation is in | |
868 | * progress. | |
869 | */ | |
870 | int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
871 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) | |
872 | { | |
873 | int ret = 0; | |
c745f55b WYG |
874 | struct iwl_host_cmd cmd = { |
875 | .id = REPLY_TX_LINK_QUALITY_CMD, | |
876 | .len = { sizeof(struct iwl_link_quality_cmd), }, | |
877 | .flags = flags, | |
878 | .data = { lq, }, | |
879 | }; | |
880 | ||
881 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) | |
882 | return -EINVAL; | |
883 | ||
884 | ||
fa23cb04 | 885 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 886 | if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
fa23cb04 | 887 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
888 | return -EINVAL; |
889 | } | |
fa23cb04 | 890 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
891 | |
892 | iwl_dump_lq_cmd(priv, lq); | |
893 | if (WARN_ON(init && (cmd.flags & CMD_ASYNC))) | |
894 | return -EINVAL; | |
895 | ||
896 | if (is_lq_table_valid(priv, ctx, lq)) | |
e10a0533 | 897 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
898 | else |
899 | ret = -EINVAL; | |
900 | ||
901 | if (cmd.flags & CMD_ASYNC) | |
902 | return ret; | |
903 | ||
904 | if (init) { | |
905 | IWL_DEBUG_INFO(priv, "init LQ command complete, " | |
906 | "clearing sta addition status for sta %d\n", | |
907 | lq->sta_id); | |
fa23cb04 | 908 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 909 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
fa23cb04 | 910 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
911 | } |
912 | return ret; | |
913 | } | |
914 | ||
c745f55b | 915 | |
c079166e | 916 | static struct iwl_link_quality_cmd * |
c745f55b WYG |
917 | iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
918 | u8 sta_id) | |
c079166e JB |
919 | { |
920 | struct iwl_link_quality_cmd *link_cmd; | |
921 | ||
922 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); | |
923 | if (!link_cmd) { | |
924 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); | |
925 | return NULL; | |
926 | } | |
927 | ||
928 | iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd); | |
a30e3112 JB |
929 | |
930 | return link_cmd; | |
931 | } | |
932 | ||
933 | /* | |
934 | * iwlagn_add_bssid_station - Add the special IBSS BSSID station | |
935 | * | |
936 | * Function sleeps. | |
937 | */ | |
c745f55b WYG |
938 | int iwlagn_add_bssid_station(struct iwl_priv *priv, |
939 | struct iwl_rxon_context *ctx, | |
a30e3112 JB |
940 | const u8 *addr, u8 *sta_id_r) |
941 | { | |
942 | int ret; | |
943 | u8 sta_id; | |
944 | struct iwl_link_quality_cmd *link_cmd; | |
a30e3112 JB |
945 | |
946 | if (sta_id_r) | |
947 | *sta_id_r = IWL_INVALID_STATION; | |
948 | ||
949 | ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); | |
950 | if (ret) { | |
951 | IWL_ERR(priv, "Unable to add station %pM\n", addr); | |
952 | return ret; | |
953 | } | |
954 | ||
955 | if (sta_id_r) | |
956 | *sta_id_r = sta_id; | |
957 | ||
fa23cb04 | 958 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 959 | priv->stations[sta_id].used |= IWL_STA_LOCAL; |
fa23cb04 | 960 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
961 | |
962 | /* Set up default rate scaling table in device's station table */ | |
f775aa06 | 963 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 | 964 | if (!link_cmd) { |
c745f55b WYG |
965 | IWL_ERR(priv, |
966 | "Unable to initialize rate scaling for station %pM.\n", | |
a30e3112 JB |
967 | addr); |
968 | return -ENOMEM; | |
969 | } | |
970 | ||
971 | ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); | |
972 | if (ret) | |
973 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); | |
974 | ||
fa23cb04 | 975 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 976 | priv->stations[sta_id].lq = link_cmd; |
fa23cb04 | 977 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
978 | |
979 | return 0; | |
980 | } | |
981 | ||
5a3d9882 JB |
982 | /* |
983 | * static WEP keys | |
984 | * | |
985 | * For each context, the device has a table of 4 static WEP keys | |
986 | * (one for each key index) that is updated with the following | |
987 | * commands. | |
988 | */ | |
989 | ||
a30e3112 JB |
990 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
991 | struct iwl_rxon_context *ctx, | |
992 | bool send_if_empty) | |
993 | { | |
994 | int i, not_empty = 0; | |
995 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
996 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
997 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
998 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
999 | struct iwl_host_cmd cmd = { | |
1000 | .id = ctx->wep_key_cmd, | |
3fa50738 | 1001 | .data = { wep_cmd, }, |
a30e3112 JB |
1002 | .flags = CMD_SYNC, |
1003 | }; | |
1004 | ||
1005 | might_sleep(); | |
1006 | ||
1007 | memset(wep_cmd, 0, cmd_size + | |
1008 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
1009 | ||
1010 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
1011 | wep_cmd->key[i].key_index = i; | |
1012 | if (ctx->wep_keys[i].key_size) { | |
1013 | wep_cmd->key[i].key_offset = i; | |
1014 | not_empty = 1; | |
1015 | } else { | |
1016 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
1017 | } | |
1018 | ||
1019 | wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; | |
1020 | memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, | |
1021 | ctx->wep_keys[i].key_size); | |
1022 | } | |
1023 | ||
1024 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
1025 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
1026 | ||
1027 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
1028 | ||
3fa50738 | 1029 | cmd.len[0] = cmd_size; |
a30e3112 JB |
1030 | |
1031 | if (not_empty || send_if_empty) | |
e10a0533 | 1032 | return iwl_dvm_send_cmd(priv, &cmd); |
a30e3112 JB |
1033 | else |
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | int iwl_restore_default_wep_keys(struct iwl_priv *priv, | |
1038 | struct iwl_rxon_context *ctx) | |
1039 | { | |
b1eea297 | 1040 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1041 | |
1042 | return iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1043 | } | |
1044 | ||
1045 | int iwl_remove_default_wep_key(struct iwl_priv *priv, | |
1046 | struct iwl_rxon_context *ctx, | |
1047 | struct ieee80211_key_conf *keyconf) | |
1048 | { | |
1049 | int ret; | |
1050 | ||
b1eea297 | 1051 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1052 | |
1053 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", | |
1054 | keyconf->keyidx); | |
1055 | ||
1056 | memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); | |
83626404 | 1057 | if (iwl_is_rfkill(priv)) { |
c745f55b WYG |
1058 | IWL_DEBUG_WEP(priv, |
1059 | "Not sending REPLY_WEPKEY command due to RFKILL.\n"); | |
a30e3112 JB |
1060 | /* but keys in device are clear anyway so return success */ |
1061 | return 0; | |
1062 | } | |
1063 | ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); | |
1064 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", | |
1065 | keyconf->keyidx, ret); | |
1066 | ||
1067 | return ret; | |
1068 | } | |
1069 | ||
1070 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
1071 | struct iwl_rxon_context *ctx, | |
1072 | struct ieee80211_key_conf *keyconf) | |
1073 | { | |
1074 | int ret; | |
1075 | ||
b1eea297 | 1076 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1077 | |
1078 | if (keyconf->keylen != WEP_KEY_LEN_128 && | |
1079 | keyconf->keylen != WEP_KEY_LEN_64) { | |
c745f55b WYG |
1080 | IWL_DEBUG_WEP(priv, |
1081 | "Bad WEP key length %d\n", keyconf->keylen); | |
a30e3112 JB |
1082 | return -EINVAL; |
1083 | } | |
1084 | ||
5a3d9882 | 1085 | keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT; |
a30e3112 JB |
1086 | |
1087 | ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; | |
1088 | memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
1089 | keyconf->keylen); | |
1090 | ||
1091 | ret = iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1092 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", | |
1093 | keyconf->keylen, keyconf->keyidx, ret); | |
1094 | ||
1095 | return ret; | |
1096 | } | |
1097 | ||
5a3d9882 JB |
1098 | /* |
1099 | * dynamic (per-station) keys | |
1100 | * | |
1101 | * The dynamic keys are a little more complicated. The device has | |
1102 | * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys. | |
1103 | * These are linked to stations by a table that contains an index | |
1104 | * into the key table for each station/key index/{mcast,unicast}, | |
1105 | * i.e. it's basically an array of pointers like this: | |
1106 | * key_offset_t key_mapping[NUM_STATIONS][4][2]; | |
1107 | * (it really works differently, but you can think of it as such) | |
1108 | * | |
1109 | * The key uploading and linking happens in the same command, the | |
1110 | * add station command with STA_MODIFY_KEY_MASK. | |
1111 | */ | |
a30e3112 | 1112 | |
5a3d9882 JB |
1113 | static u8 iwlagn_key_sta_id(struct iwl_priv *priv, |
1114 | struct ieee80211_vif *vif, | |
1115 | struct ieee80211_sta *sta) | |
1116 | { | |
1117 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
5a3d9882 JB |
1118 | |
1119 | if (sta) | |
40e4e686 | 1120 | return iwl_sta_id(sta); |
5a3d9882 JB |
1121 | |
1122 | /* | |
1123 | * The device expects GTKs for station interfaces to be | |
1124 | * installed as GTKs for the AP station. If we have no | |
1125 | * station ID, then use the ap_sta_id in that case. | |
1126 | */ | |
40e4e686 JB |
1127 | if (vif->type == NL80211_IFTYPE_STATION && vif_priv->ctx) |
1128 | return vif_priv->ctx->ap_sta_id; | |
a30e3112 | 1129 | |
40e4e686 | 1130 | return IWL_INVALID_STATION; |
a30e3112 JB |
1131 | } |
1132 | ||
e1b1c087 JB |
1133 | static int iwlagn_send_sta_key(struct iwl_priv *priv, |
1134 | struct ieee80211_key_conf *keyconf, | |
1135 | u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, | |
1136 | u32 cmd_flags) | |
a30e3112 | 1137 | { |
5a3d9882 | 1138 | __le16 key_flags; |
a30e3112 | 1139 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1140 | int i; |
e1b1c087 | 1141 | |
fa23cb04 | 1142 | spin_lock_bh(&priv->sta_lock); |
5a3d9882 | 1143 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
fa23cb04 | 1144 | spin_unlock_bh(&priv->sta_lock); |
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 | 1210 | { |
a30e3112 | 1211 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1212 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
5dcbf480 | 1213 | __le16 key_flags; |
5a3d9882 JB |
1214 | |
1215 | /* if station isn't there, neither is the key */ | |
1216 | if (sta_id == IWL_INVALID_STATION) | |
1217 | return -ENOENT; | |
1218 | ||
fa23cb04 | 1219 | spin_lock_bh(&priv->sta_lock); |
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; | |
fa23cb04 | 1223 | spin_unlock_bh(&priv->sta_lock); |
5a3d9882 JB |
1224 | |
1225 | if (sta_id == IWL_INVALID_STATION) | |
1226 | return 0; | |
a30e3112 | 1227 | |
b1eea297 | 1228 | lockdep_assert_held(&priv->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 | |
5dcbf480 JB |
1239 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1240 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK | STA_KEY_FLG_NO_ENC | | |
1241 | STA_KEY_FLG_INVALID; | |
1242 | ||
1243 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) | |
1244 | key_flags |= STA_KEY_MULTICAST_MSK; | |
1245 | ||
1246 | sta_cmd.key.key_flags = key_flags; | |
d6ee27eb | 1247 | sta_cmd.key.key_offset = keyconf->hw_key_idx; |
5a3d9882 JB |
1248 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; |
1249 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
a30e3112 JB |
1250 | |
1251 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1252 | } | |
1253 | ||
5a3d9882 JB |
1254 | int iwl_set_dynamic_key(struct iwl_priv *priv, |
1255 | struct iwl_rxon_context *ctx, | |
1256 | struct ieee80211_key_conf *keyconf, | |
1257 | struct ieee80211_sta *sta) | |
a30e3112 | 1258 | { |
5a3d9882 JB |
1259 | struct ieee80211_key_seq seq; |
1260 | u16 p1k[5]; | |
a30e3112 | 1261 | int ret; |
5a3d9882 JB |
1262 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
1263 | const u8 *addr; | |
1264 | ||
1265 | if (sta_id == IWL_INVALID_STATION) | |
1266 | return -EINVAL; | |
a30e3112 | 1267 | |
b1eea297 | 1268 | lockdep_assert_held(&priv->mutex); |
a30e3112 | 1269 | |
5a3d9882 JB |
1270 | keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv); |
1271 | if (keyconf->hw_key_idx == WEP_INVALID_OFFSET) | |
1272 | return -ENOSPC; | |
1273 | ||
a30e3112 | 1274 | ctx->key_mapping_keys++; |
a30e3112 JB |
1275 | |
1276 | switch (keyconf->cipher) { | |
a30e3112 | 1277 | case WLAN_CIPHER_SUITE_TKIP: |
5a3d9882 JB |
1278 | if (sta) |
1279 | addr = sta->addr; | |
1280 | else /* station mode case only */ | |
1281 | addr = ctx->active.bssid_addr; | |
1282 | ||
1283 | /* pre-fill phase 1 key into device cache */ | |
1284 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1285 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
e1b1c087 JB |
1286 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1287 | seq.tkip.iv32, p1k, CMD_SYNC); | |
a30e3112 | 1288 | break; |
5a3d9882 | 1289 | case WLAN_CIPHER_SUITE_CCMP: |
a30e3112 JB |
1290 | case WLAN_CIPHER_SUITE_WEP40: |
1291 | case WLAN_CIPHER_SUITE_WEP104: | |
e1b1c087 JB |
1292 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1293 | 0, NULL, CMD_SYNC); | |
a30e3112 JB |
1294 | break; |
1295 | default: | |
5a3d9882 | 1296 | IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher); |
a30e3112 JB |
1297 | ret = -EINVAL; |
1298 | } | |
1299 | ||
5a3d9882 JB |
1300 | if (ret) { |
1301 | ctx->key_mapping_keys--; | |
1302 | clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table); | |
1303 | } | |
1304 | ||
1305 | IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
a30e3112 | 1306 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
5a3d9882 | 1307 | sta ? sta->addr : NULL, ret); |
a30e3112 JB |
1308 | |
1309 | return ret; | |
1310 | } | |
1311 | ||
1312 | /** | |
1313 | * iwlagn_alloc_bcast_station - add broadcast station into driver's station table. | |
1314 | * | |
1315 | * This adds the broadcast station into the driver's station table | |
1316 | * and marks it driver active, so that it will be restored to the | |
1317 | * device at the next best time. | |
1318 | */ | |
1319 | int iwlagn_alloc_bcast_station(struct iwl_priv *priv, | |
1320 | struct iwl_rxon_context *ctx) | |
1321 | { | |
1322 | struct iwl_link_quality_cmd *link_cmd; | |
a30e3112 JB |
1323 | u8 sta_id; |
1324 | ||
fa23cb04 | 1325 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1326 | sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
1327 | if (sta_id == IWL_INVALID_STATION) { | |
1328 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); | |
fa23cb04 | 1329 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1330 | |
1331 | return -EINVAL; | |
1332 | } | |
1333 | ||
1334 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
1335 | priv->stations[sta_id].used |= IWL_STA_BCAST; | |
fa23cb04 | 1336 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 | 1337 | |
f775aa06 | 1338 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1339 | if (!link_cmd) { |
1340 | IWL_ERR(priv, | |
1341 | "Unable to initialize rate scaling for bcast station.\n"); | |
1342 | return -ENOMEM; | |
1343 | } | |
1344 | ||
fa23cb04 | 1345 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 1346 | priv->stations[sta_id].lq = link_cmd; |
fa23cb04 | 1347 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1348 | |
1349 | return 0; | |
1350 | } | |
1351 | ||
1352 | /** | |
1353 | * iwl_update_bcast_station - update broadcast station's LQ command | |
1354 | * | |
1355 | * Only used by iwlagn. Placed here to have all bcast station management | |
1356 | * code together. | |
1357 | */ | |
f775aa06 JB |
1358 | int iwl_update_bcast_station(struct iwl_priv *priv, |
1359 | struct iwl_rxon_context *ctx) | |
a30e3112 | 1360 | { |
a30e3112 JB |
1361 | struct iwl_link_quality_cmd *link_cmd; |
1362 | u8 sta_id = ctx->bcast_sta_id; | |
1363 | ||
f775aa06 | 1364 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1365 | if (!link_cmd) { |
1366 | IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); | |
1367 | return -ENOMEM; | |
1368 | } | |
1369 | ||
fa23cb04 | 1370 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1371 | if (priv->stations[sta_id].lq) |
1372 | kfree(priv->stations[sta_id].lq); | |
1373 | else | |
1374 | IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); | |
1375 | priv->stations[sta_id].lq = link_cmd; | |
fa23cb04 | 1376 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1377 | |
1378 | return 0; | |
1379 | } | |
1380 | ||
1381 | int iwl_update_bcast_stations(struct iwl_priv *priv) | |
1382 | { | |
1383 | struct iwl_rxon_context *ctx; | |
1384 | int ret = 0; | |
1385 | ||
1386 | for_each_context(priv, ctx) { | |
1387 | ret = iwl_update_bcast_station(priv, ctx); | |
1388 | if (ret) | |
1389 | break; | |
1390 | } | |
1391 | ||
1392 | return ret; | |
1393 | } | |
1394 | ||
1395 | /** | |
1396 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table | |
1397 | */ | |
1398 | int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) | |
1399 | { | |
a30e3112 JB |
1400 | struct iwl_addsta_cmd sta_cmd; |
1401 | ||
b1eea297 | 1402 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1403 | |
1404 | /* Remove "disable" flag, to enable Tx for this TID */ | |
fa23cb04 | 1405 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1406 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
1407 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
1408 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1409 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1410 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1411 | |
1412 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1413 | } | |
1414 | ||
1415 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1416 | int tid, u16 ssn) | |
1417 | { | |
a30e3112 JB |
1418 | int sta_id; |
1419 | struct iwl_addsta_cmd sta_cmd; | |
1420 | ||
b1eea297 | 1421 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1422 | |
1423 | sta_id = iwl_sta_id(sta); | |
1424 | if (sta_id == IWL_INVALID_STATION) | |
1425 | return -ENXIO; | |
1426 | ||
fa23cb04 | 1427 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1428 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1429 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
1430 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
1431 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
1432 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1433 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1434 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1435 | |
1436 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1437 | } | |
1438 | ||
1439 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1440 | int tid) | |
1441 | { | |
a30e3112 JB |
1442 | int sta_id; |
1443 | struct iwl_addsta_cmd sta_cmd; | |
1444 | ||
b1eea297 | 1445 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1446 | |
1447 | sta_id = iwl_sta_id(sta); | |
1448 | if (sta_id == IWL_INVALID_STATION) { | |
1449 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
1450 | return -ENXIO; | |
1451 | } | |
1452 | ||
fa23cb04 | 1453 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1454 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1455 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
1456 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
1457 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1458 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1459 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1460 | |
1461 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1462 | } | |
1463 | ||
a30e3112 | 1464 | |
a30e3112 JB |
1465 | |
1466 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) | |
1467 | { | |
9451ca1a JB |
1468 | struct iwl_addsta_cmd cmd = { |
1469 | .mode = STA_CONTROL_MODIFY_MSK, | |
1470 | .station_flags = STA_FLG_PWR_SAVE_MSK, | |
1471 | .station_flags_msk = STA_FLG_PWR_SAVE_MSK, | |
1472 | .sta.sta_id = sta_id, | |
1473 | .sta.modify_mask = STA_MODIFY_SLEEP_TX_COUNT_MSK, | |
1474 | .sleep_tx_count = cpu_to_le16(cnt), | |
1475 | }; | |
a30e3112 | 1476 | |
9451ca1a | 1477 | iwl_send_add_sta(priv, &cmd, CMD_ASYNC); |
a30e3112 | 1478 | } |