]>
Commit | Line | Data |
---|---|---|
8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
51368bf7 | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 9 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
8ca151b5 JB |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
51368bf7 | 34 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 35 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
65 | #include <net/mac80211.h> | |
66 | ||
67 | #include "mvm.h" | |
68 | #include "sta.h" | |
9ee718aa | 69 | #include "rs.h" |
8ca151b5 | 70 | |
b92e661b EP |
71 | static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, |
72 | enum nl80211_iftype iftype) | |
8ca151b5 JB |
73 | { |
74 | int sta_id; | |
b92e661b | 75 | u32 reserved_ids = 0; |
8ca151b5 | 76 | |
b92e661b | 77 | BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); |
8ca151b5 JB |
78 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); |
79 | ||
80 | lockdep_assert_held(&mvm->mutex); | |
81 | ||
b92e661b EP |
82 | /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ |
83 | if (iftype != NL80211_IFTYPE_STATION) | |
84 | reserved_ids = BIT(0); | |
85 | ||
8ca151b5 | 86 | /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ |
b92e661b EP |
87 | for (sta_id = 0; sta_id < IWL_MVM_STATION_COUNT; sta_id++) { |
88 | if (BIT(sta_id) & reserved_ids) | |
89 | continue; | |
90 | ||
8ca151b5 JB |
91 | if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], |
92 | lockdep_is_held(&mvm->mutex))) | |
93 | return sta_id; | |
b92e661b | 94 | } |
8ca151b5 JB |
95 | return IWL_MVM_STATION_COUNT; |
96 | } | |
97 | ||
7a453973 JB |
98 | /* send station add/update command to firmware */ |
99 | int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
100 | bool update) | |
8ca151b5 | 101 | { |
9d8ce6af | 102 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
4b8265ab EG |
103 | struct iwl_mvm_add_sta_cmd add_sta_cmd = { |
104 | .sta_id = mvm_sta->sta_id, | |
105 | .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), | |
106 | .add_modify = update ? 1 : 0, | |
107 | .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | | |
108 | STA_FLG_MIMO_EN_MSK), | |
109 | }; | |
8ca151b5 JB |
110 | int ret; |
111 | u32 status; | |
112 | u32 agg_size = 0, mpdu_dens = 0; | |
113 | ||
7a453973 JB |
114 | if (!update) { |
115 | add_sta_cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
116 | memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); | |
117 | } | |
5bc5aaad JB |
118 | |
119 | switch (sta->bandwidth) { | |
120 | case IEEE80211_STA_RX_BW_160: | |
121 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); | |
122 | /* fall through */ | |
123 | case IEEE80211_STA_RX_BW_80: | |
124 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); | |
125 | /* fall through */ | |
126 | case IEEE80211_STA_RX_BW_40: | |
127 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); | |
128 | /* fall through */ | |
129 | case IEEE80211_STA_RX_BW_20: | |
130 | if (sta->ht_cap.ht_supported) | |
131 | add_sta_cmd.station_flags |= | |
132 | cpu_to_le32(STA_FLG_FAT_EN_20MHZ); | |
133 | break; | |
134 | } | |
135 | ||
136 | switch (sta->rx_nss) { | |
137 | case 1: | |
138 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
139 | break; | |
140 | case 2: | |
141 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); | |
142 | break; | |
143 | case 3 ... 8: | |
144 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); | |
145 | break; | |
146 | } | |
147 | ||
148 | switch (sta->smps_mode) { | |
149 | case IEEE80211_SMPS_AUTOMATIC: | |
150 | case IEEE80211_SMPS_NUM_MODES: | |
151 | WARN_ON(1); | |
152 | break; | |
153 | case IEEE80211_SMPS_STATIC: | |
154 | /* override NSS */ | |
155 | add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); | |
156 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); | |
157 | break; | |
158 | case IEEE80211_SMPS_DYNAMIC: | |
159 | add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); | |
160 | break; | |
161 | case IEEE80211_SMPS_OFF: | |
162 | /* nothing */ | |
163 | break; | |
164 | } | |
8ca151b5 JB |
165 | |
166 | if (sta->ht_cap.ht_supported) { | |
167 | add_sta_cmd.station_flags_msk |= | |
168 | cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | | |
169 | STA_FLG_AGG_MPDU_DENS_MSK); | |
170 | ||
171 | mpdu_dens = sta->ht_cap.ampdu_density; | |
172 | } | |
173 | ||
174 | if (sta->vht_cap.vht_supported) { | |
175 | agg_size = sta->vht_cap.cap & | |
176 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; | |
177 | agg_size >>= | |
178 | IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; | |
179 | } else if (sta->ht_cap.ht_supported) { | |
180 | agg_size = sta->ht_cap.ampdu_factor; | |
181 | } | |
182 | ||
183 | add_sta_cmd.station_flags |= | |
184 | cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); | |
185 | add_sta_cmd.station_flags |= | |
186 | cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); | |
187 | ||
188 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
189 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(add_sta_cmd), |
190 | &add_sta_cmd, &status); | |
8ca151b5 JB |
191 | if (ret) |
192 | return ret; | |
193 | ||
194 | switch (status) { | |
195 | case ADD_STA_SUCCESS: | |
196 | IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); | |
197 | break; | |
198 | default: | |
199 | ret = -EIO; | |
200 | IWL_ERR(mvm, "ADD_STA failed\n"); | |
201 | break; | |
202 | } | |
203 | ||
204 | return ret; | |
205 | } | |
206 | ||
a0f6bf2a AN |
207 | static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm, |
208 | struct ieee80211_sta *sta) | |
209 | { | |
210 | unsigned long used_hw_queues; | |
211 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
4cf677fd EG |
212 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
213 | mvm->cfg->base_params->wd_timeout : | |
214 | IWL_WATCHDOG_DISABLED; | |
a0f6bf2a AN |
215 | u32 ac; |
216 | ||
217 | lockdep_assert_held(&mvm->mutex); | |
218 | ||
219 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, NULL); | |
220 | ||
221 | /* Find available queues, and allocate them to the ACs */ | |
222 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
223 | u8 queue = find_first_zero_bit(&used_hw_queues, | |
224 | mvm->first_agg_queue); | |
225 | ||
226 | if (queue >= mvm->first_agg_queue) { | |
227 | IWL_ERR(mvm, "Failed to allocate STA queue\n"); | |
228 | return -EBUSY; | |
229 | } | |
230 | ||
231 | __set_bit(queue, &used_hw_queues); | |
232 | mvmsta->hw_queue[ac] = queue; | |
233 | } | |
234 | ||
235 | /* Found a place for all queues - enable them */ | |
236 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
237 | iwl_mvm_enable_ac_txq(mvm, mvmsta->hw_queue[ac], | |
4cf677fd | 238 | iwl_mvm_ac_to_tx_fifo[ac], wdg_timeout); |
a0f6bf2a AN |
239 | mvmsta->tfd_queue_msk |= BIT(mvmsta->hw_queue[ac]); |
240 | } | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm *mvm, | |
246 | struct ieee80211_sta *sta) | |
247 | { | |
248 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
249 | unsigned long sta_msk; | |
250 | int i; | |
251 | ||
252 | lockdep_assert_held(&mvm->mutex); | |
253 | ||
254 | /* disable the TDLS STA-specific queues */ | |
255 | sta_msk = mvmsta->tfd_queue_msk; | |
a4ca3ed4 | 256 | for_each_set_bit(i, &sta_msk, sizeof(sta_msk) * BITS_PER_BYTE) |
0294d9ee | 257 | iwl_mvm_disable_txq(mvm, i, 0); |
a0f6bf2a AN |
258 | } |
259 | ||
8ca151b5 JB |
260 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, |
261 | struct ieee80211_vif *vif, | |
262 | struct ieee80211_sta *sta) | |
263 | { | |
264 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 265 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
266 | int i, ret, sta_id; |
267 | ||
268 | lockdep_assert_held(&mvm->mutex); | |
269 | ||
270 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
271 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
272 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
273 | else |
274 | sta_id = mvm_sta->sta_id; | |
275 | ||
36f4631c | 276 | if (sta_id == IWL_MVM_STATION_COUNT) |
8ca151b5 JB |
277 | return -ENOSPC; |
278 | ||
279 | spin_lock_init(&mvm_sta->lock); | |
280 | ||
281 | mvm_sta->sta_id = sta_id; | |
282 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
283 | mvmvif->color); | |
284 | mvm_sta->vif = vif; | |
285 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
286 | mvm_sta->tx_protection = 0; |
287 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
288 | |
289 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 290 | atomic_set(&mvm->pending_frames[sta_id], 0); |
8ca151b5 JB |
291 | mvm_sta->tid_disable_agg = 0; |
292 | mvm_sta->tfd_queue_msk = 0; | |
a0f6bf2a AN |
293 | |
294 | /* allocate new queues for a TDLS station */ | |
295 | if (sta->tdls) { | |
296 | ret = iwl_mvm_tdls_sta_init(mvm, sta); | |
297 | if (ret) | |
298 | return ret; | |
299 | } else { | |
300 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
301 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
302 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
303 | } | |
8ca151b5 | 304 | |
6d9d32b8 JB |
305 | /* for HW restart - reset everything but the sequence number */ |
306 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
307 | u16 seq = mvm_sta->tid_data[i].seq_number; | |
308 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
309 | mvm_sta->tid_data[i].seq_number = seq; | |
310 | } | |
efed6640 | 311 | mvm_sta->agg_tids = 0; |
8ca151b5 | 312 | |
7a453973 | 313 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); |
8ca151b5 | 314 | if (ret) |
a0f6bf2a | 315 | goto err; |
8ca151b5 | 316 | |
9e848010 JB |
317 | if (vif->type == NL80211_IFTYPE_STATION) { |
318 | if (!sta->tdls) { | |
319 | WARN_ON(mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT); | |
320 | mvmvif->ap_sta_id = sta_id; | |
321 | } else { | |
322 | WARN_ON(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT); | |
323 | } | |
324 | } | |
8ca151b5 JB |
325 | |
326 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
327 | ||
328 | return 0; | |
a0f6bf2a AN |
329 | |
330 | err: | |
331 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
332 | return ret; | |
8ca151b5 JB |
333 | } |
334 | ||
7a453973 JB |
335 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
336 | struct ieee80211_vif *vif, | |
337 | struct ieee80211_sta *sta) | |
338 | { | |
339 | return iwl_mvm_sta_send_to_fw(mvm, sta, true); | |
340 | } | |
341 | ||
8ca151b5 JB |
342 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
343 | bool drain) | |
344 | { | |
f9dc0004 | 345 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
346 | int ret; |
347 | u32 status; | |
348 | ||
349 | lockdep_assert_held(&mvm->mutex); | |
350 | ||
351 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
352 | cmd.sta_id = mvmsta->sta_id; | |
353 | cmd.add_modify = STA_MODE_MODIFY; | |
354 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
355 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
356 | ||
357 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
358 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
359 | &cmd, &status); | |
8ca151b5 JB |
360 | if (ret) |
361 | return ret; | |
362 | ||
363 | switch (status) { | |
364 | case ADD_STA_SUCCESS: | |
365 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
366 | mvmsta->sta_id); | |
367 | break; | |
368 | default: | |
369 | ret = -EIO; | |
370 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
371 | mvmsta->sta_id); | |
372 | break; | |
373 | } | |
374 | ||
375 | return ret; | |
376 | } | |
377 | ||
378 | /* | |
379 | * Remove a station from the FW table. Before sending the command to remove | |
380 | * the station validate that the station is indeed known to the driver (sanity | |
381 | * only). | |
382 | */ | |
383 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
384 | { | |
385 | struct ieee80211_sta *sta; | |
386 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
387 | .sta_id = sta_id, | |
388 | }; | |
389 | int ret; | |
390 | ||
391 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
392 | lockdep_is_held(&mvm->mutex)); | |
393 | ||
394 | /* Note: internal stations are marked as error values */ | |
395 | if (!sta) { | |
396 | IWL_ERR(mvm, "Invalid station id\n"); | |
397 | return -EINVAL; | |
398 | } | |
399 | ||
a1022927 | 400 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
401 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
402 | if (ret) { | |
403 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
404 | return ret; | |
405 | } | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
411 | { | |
412 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
413 | u8 sta_id; | |
414 | ||
415 | /* | |
416 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
417 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
418 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
419 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
420 | * that later. | |
421 | */ | |
422 | mutex_lock(&mvm->mutex); | |
423 | ||
424 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
425 | int ret; | |
426 | struct ieee80211_sta *sta = | |
427 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
428 | lockdep_is_held(&mvm->mutex)); | |
429 | ||
1ddbbb0c JB |
430 | /* |
431 | * This station is in use or RCU-removed; the latter happens in | |
432 | * managed mode, where mac80211 removes the station before we | |
433 | * can remove it from firmware (we can only do that after the | |
434 | * MAC is marked unassociated), and possibly while the deauth | |
435 | * frame to disconnect from the AP is still queued. Then, the | |
436 | * station pointer is -ENOENT when the last skb is reclaimed. | |
437 | */ | |
438 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
439 | continue; |
440 | ||
441 | if (PTR_ERR(sta) == -EINVAL) { | |
442 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
443 | sta_id); | |
444 | continue; | |
445 | } | |
446 | ||
447 | if (!sta) { | |
448 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
449 | sta_id); | |
450 | continue; | |
451 | } | |
452 | ||
453 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
454 | /* This station was removed and we waited until it got drained, | |
455 | * we can now proceed and remove it. | |
456 | */ | |
457 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
458 | if (ret) { | |
459 | IWL_ERR(mvm, | |
460 | "Couldn't remove sta %d after it was drained\n", | |
461 | sta_id); | |
462 | continue; | |
463 | } | |
c531c771 | 464 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 | 465 | clear_bit(sta_id, mvm->sta_drained); |
a0f6bf2a AN |
466 | |
467 | if (mvm->tfd_drained[sta_id]) { | |
468 | unsigned long i, msk = mvm->tfd_drained[sta_id]; | |
469 | ||
a4ca3ed4 | 470 | for_each_set_bit(i, &msk, sizeof(msk) * BITS_PER_BYTE) |
0294d9ee | 471 | iwl_mvm_disable_txq(mvm, i, 0); |
a0f6bf2a AN |
472 | |
473 | mvm->tfd_drained[sta_id] = 0; | |
474 | IWL_DEBUG_TDLS(mvm, "Drained sta %d, with queues %ld\n", | |
475 | sta_id, msk); | |
476 | } | |
8ca151b5 JB |
477 | } |
478 | ||
479 | mutex_unlock(&mvm->mutex); | |
480 | } | |
481 | ||
482 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, | |
483 | struct ieee80211_vif *vif, | |
484 | struct ieee80211_sta *sta) | |
485 | { | |
486 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
9d8ce6af | 487 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
488 | int ret; |
489 | ||
490 | lockdep_assert_held(&mvm->mutex); | |
491 | ||
492 | if (vif->type == NL80211_IFTYPE_STATION && | |
493 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
fe92e32a EG |
494 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
495 | if (ret) | |
496 | return ret; | |
80d85655 EG |
497 | /* flush its queues here since we are freeing mvm_sta */ |
498 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true); | |
fe92e32a EG |
499 | if (ret) |
500 | return ret; | |
501 | ret = iwl_trans_wait_tx_queue_empty(mvm->trans, | |
502 | mvm_sta->tfd_queue_msk); | |
503 | if (ret) | |
504 | return ret; | |
505 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); | |
80d85655 | 506 | |
8ca151b5 JB |
507 | /* if we are associated - we can't remove the AP STA now */ |
508 | if (vif->bss_conf.assoc) | |
509 | return ret; | |
510 | ||
511 | /* unassoc - go ahead - remove the AP STA now */ | |
512 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
513 | |
514 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
515 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
516 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
517 | } |
518 | ||
1d3c3f63 AN |
519 | /* |
520 | * This shouldn't happen - the TDLS channel switch should be canceled | |
521 | * before the STA is removed. | |
522 | */ | |
523 | if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == mvm_sta->sta_id)) { | |
524 | mvm->tdls_cs.peer.sta_id = IWL_MVM_STATION_COUNT; | |
525 | cancel_delayed_work(&mvm->tdls_cs.dwork); | |
526 | } | |
527 | ||
e3d4bc8c EG |
528 | /* |
529 | * Make sure that the tx response code sees the station as -EBUSY and | |
530 | * calls the drain worker. | |
531 | */ | |
532 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
533 | /* |
534 | * There are frames pending on the AC queues for this station. | |
535 | * We need to wait until all the frames are drained... | |
536 | */ | |
e3d4bc8c | 537 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
538 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
539 | ERR_PTR(-EBUSY)); | |
e3d4bc8c | 540 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
541 | |
542 | /* disable TDLS sta queues on drain complete */ | |
543 | if (sta->tdls) { | |
544 | mvm->tfd_drained[mvm_sta->sta_id] = | |
545 | mvm_sta->tfd_queue_msk; | |
546 | IWL_DEBUG_TDLS(mvm, "Draining TDLS sta %d\n", | |
547 | mvm_sta->sta_id); | |
548 | } | |
549 | ||
e3d4bc8c | 550 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); |
8ca151b5 | 551 | } else { |
e3d4bc8c | 552 | spin_unlock_bh(&mvm_sta->lock); |
a0f6bf2a AN |
553 | |
554 | if (sta->tdls) | |
555 | iwl_mvm_tdls_sta_deinit(mvm, sta); | |
556 | ||
8ca151b5 | 557 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 558 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
559 | } |
560 | ||
561 | return ret; | |
562 | } | |
563 | ||
564 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
565 | struct ieee80211_vif *vif, | |
566 | u8 sta_id) | |
567 | { | |
568 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
569 | ||
570 | lockdep_assert_held(&mvm->mutex); | |
571 | ||
c531c771 | 572 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
573 | return ret; |
574 | } | |
575 | ||
712b24ad JB |
576 | static int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, |
577 | struct iwl_mvm_int_sta *sta, | |
578 | u32 qmask, enum nl80211_iftype iftype) | |
8ca151b5 JB |
579 | { |
580 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 581 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
582 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
583 | return -ENOSPC; | |
584 | } | |
585 | ||
586 | sta->tfd_queue_msk = qmask; | |
587 | ||
588 | /* put a non-NULL value so iterating over the stations won't stop */ | |
589 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
590 | return 0; | |
591 | } | |
592 | ||
712b24ad JB |
593 | static void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, |
594 | struct iwl_mvm_int_sta *sta) | |
8ca151b5 | 595 | { |
c531c771 | 596 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
597 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
598 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
599 | } | |
600 | ||
601 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
602 | struct iwl_mvm_int_sta *sta, | |
603 | const u8 *addr, | |
604 | u16 mac_id, u16 color) | |
605 | { | |
f9dc0004 | 606 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
607 | int ret; |
608 | u32 status; | |
609 | ||
610 | lockdep_assert_held(&mvm->mutex); | |
611 | ||
f9dc0004 | 612 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
613 | cmd.sta_id = sta->sta_id; |
614 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
615 | color)); | |
616 | ||
617 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
618 | ||
619 | if (addr) | |
620 | memcpy(cmd.addr, addr, ETH_ALEN); | |
621 | ||
f9dc0004 EG |
622 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
623 | &cmd, &status); | |
8ca151b5 JB |
624 | if (ret) |
625 | return ret; | |
626 | ||
627 | switch (status) { | |
628 | case ADD_STA_SUCCESS: | |
629 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
630 | return 0; | |
631 | default: | |
632 | ret = -EIO; | |
633 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
634 | status); | |
635 | break; | |
636 | } | |
637 | return ret; | |
638 | } | |
639 | ||
640 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
641 | { | |
4cf677fd EG |
642 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
643 | mvm->cfg->base_params->wd_timeout : | |
644 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
645 | int ret; |
646 | ||
647 | lockdep_assert_held(&mvm->mutex); | |
648 | ||
7da91b0e | 649 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
3edf8ff6 | 650 | iwl_mvm_enable_ac_txq(mvm, mvm->aux_queue, |
4cf677fd | 651 | IWL_MVM_TX_FIFO_MCAST, wdg_timeout); |
7da91b0e AM |
652 | |
653 | /* Allocate aux station and assign to it the aux queue */ | |
654 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 655 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
656 | if (ret) |
657 | return ret; | |
658 | ||
659 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
660 | MAC_INDEX_AUX, 0); | |
661 | ||
662 | if (ret) | |
663 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
664 | return ret; | |
665 | } | |
666 | ||
712b24ad JB |
667 | void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) |
668 | { | |
669 | lockdep_assert_held(&mvm->mutex); | |
670 | ||
671 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
672 | } | |
673 | ||
8ca151b5 JB |
674 | /* |
675 | * Send the add station command for the vif's broadcast station. | |
676 | * Assumes that the station was already allocated. | |
677 | * | |
678 | * @mvm: the mvm component | |
679 | * @vif: the interface to which the broadcast station is added | |
680 | * @bsta: the broadcast station to add. | |
681 | */ | |
013290aa | 682 | int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
683 | { |
684 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 685 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
5023d966 | 686 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 687 | const u8 *baddr = _baddr; |
8ca151b5 JB |
688 | |
689 | lockdep_assert_held(&mvm->mutex); | |
690 | ||
5023d966 JB |
691 | if (vif->type == NL80211_IFTYPE_ADHOC) |
692 | baddr = vif->bss_conf.bssid; | |
693 | ||
8ca151b5 JB |
694 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
695 | return -ENOSPC; | |
696 | ||
697 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
698 | mvmvif->id, mvmvif->color); | |
699 | } | |
700 | ||
701 | /* Send the FW a request to remove the station from it's internal data | |
702 | * structures, but DO NOT remove the entry from the local data structures. */ | |
013290aa | 703 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 | 704 | { |
013290aa | 705 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
706 | int ret; |
707 | ||
708 | lockdep_assert_held(&mvm->mutex); | |
709 | ||
013290aa | 710 | ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); |
8ca151b5 JB |
711 | if (ret) |
712 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
713 | return ret; | |
714 | } | |
715 | ||
013290aa JB |
716 | int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
717 | { | |
718 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
719 | u32 qmask; | |
720 | ||
721 | lockdep_assert_held(&mvm->mutex); | |
722 | ||
d92b732e | 723 | qmask = iwl_mvm_mac_get_queues_mask(vif); |
013290aa JB |
724 | |
725 | /* | |
726 | * The firmware defines the TFD queue mask to only be relevant | |
727 | * for *unicast* queues, so the multicast (CAB) queue shouldn't | |
728 | * be included. | |
729 | */ | |
730 | if (vif->type == NL80211_IFTYPE_AP) | |
731 | qmask &= ~BIT(vif->cab_queue); | |
732 | ||
733 | return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, qmask, | |
734 | ieee80211_vif_type_p2p(vif)); | |
735 | } | |
736 | ||
8ca151b5 JB |
737 | /* Allocate a new station entry for the broadcast station to the given vif, |
738 | * and send it to the FW. | |
739 | * Note that each P2P mac should have its own broadcast station. | |
740 | * | |
741 | * @mvm: the mvm component | |
742 | * @vif: the interface to which the broadcast station is added | |
743 | * @bsta: the broadcast station to add. */ | |
013290aa | 744 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
745 | { |
746 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
013290aa | 747 | struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; |
8ca151b5 JB |
748 | int ret; |
749 | ||
750 | lockdep_assert_held(&mvm->mutex); | |
751 | ||
013290aa | 752 | ret = iwl_mvm_alloc_bcast_sta(mvm, vif); |
8ca151b5 JB |
753 | if (ret) |
754 | return ret; | |
755 | ||
013290aa | 756 | ret = iwl_mvm_send_add_bcast_sta(mvm, vif); |
8ca151b5 JB |
757 | |
758 | if (ret) | |
759 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
013290aa | 760 | |
8ca151b5 JB |
761 | return ret; |
762 | } | |
763 | ||
013290aa JB |
764 | void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
765 | { | |
766 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
767 | ||
768 | iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); | |
769 | } | |
770 | ||
8ca151b5 JB |
771 | /* |
772 | * Send the FW a request to remove the station from it's internal data | |
773 | * structures, and in addition remove it from the local data structure. | |
774 | */ | |
013290aa | 775 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
8ca151b5 JB |
776 | { |
777 | int ret; | |
778 | ||
779 | lockdep_assert_held(&mvm->mutex); | |
780 | ||
013290aa JB |
781 | ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); |
782 | ||
783 | iwl_mvm_dealloc_bcast_sta(mvm, vif); | |
8ca151b5 | 784 | |
8ca151b5 JB |
785 | return ret; |
786 | } | |
787 | ||
113a0447 EG |
788 | #define IWL_MAX_RX_BA_SESSIONS 16 |
789 | ||
8ca151b5 JB |
790 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
791 | int tid, u16 ssn, bool start) | |
792 | { | |
9d8ce6af | 793 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 794 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
795 | int ret; |
796 | u32 status; | |
797 | ||
798 | lockdep_assert_held(&mvm->mutex); | |
799 | ||
113a0447 EG |
800 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
801 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
802 | return -ENOSPC; | |
803 | } | |
804 | ||
8ca151b5 JB |
805 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
806 | cmd.sta_id = mvm_sta->sta_id; | |
807 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
808 | if (start) { |
809 | cmd.add_immediate_ba_tid = (u8) tid; | |
810 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
811 | } else { | |
812 | cmd.remove_immediate_ba_tid = (u8) tid; | |
813 | } | |
8ca151b5 JB |
814 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
815 | STA_MODIFY_REMOVE_BA_TID; | |
816 | ||
817 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
818 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
819 | &cmd, &status); | |
8ca151b5 JB |
820 | if (ret) |
821 | return ret; | |
822 | ||
823 | switch (status) { | |
824 | case ADD_STA_SUCCESS: | |
825 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
826 | start ? "start" : "stopp"); | |
827 | break; | |
828 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
829 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
830 | ret = -ENOSPC; | |
831 | break; | |
832 | default: | |
833 | ret = -EIO; | |
834 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
835 | start ? "start" : "stopp", status); | |
836 | break; | |
837 | } | |
838 | ||
113a0447 EG |
839 | if (!ret) { |
840 | if (start) | |
841 | mvm->rx_ba_sessions++; | |
842 | else if (mvm->rx_ba_sessions > 0) | |
843 | /* check that restart flow didn't zero the counter */ | |
844 | mvm->rx_ba_sessions--; | |
845 | } | |
846 | ||
8ca151b5 JB |
847 | return ret; |
848 | } | |
849 | ||
850 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
851 | int tid, u8 queue, bool start) | |
852 | { | |
9d8ce6af | 853 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 854 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
855 | int ret; |
856 | u32 status; | |
857 | ||
858 | lockdep_assert_held(&mvm->mutex); | |
859 | ||
860 | if (start) { | |
861 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
862 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
863 | } else { | |
864 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
865 | mvm_sta->tid_disable_agg |= BIT(tid); | |
866 | } | |
867 | ||
868 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
869 | cmd.sta_id = mvm_sta->sta_id; | |
870 | cmd.add_modify = STA_MODE_MODIFY; | |
871 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
872 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
873 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
874 | ||
875 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
876 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
877 | &cmd, &status); | |
8ca151b5 JB |
878 | if (ret) |
879 | return ret; | |
880 | ||
881 | switch (status) { | |
882 | case ADD_STA_SUCCESS: | |
883 | break; | |
884 | default: | |
885 | ret = -EIO; | |
886 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
887 | start ? "start" : "stopp", status); | |
888 | break; | |
889 | } | |
890 | ||
891 | return ret; | |
892 | } | |
893 | ||
b797e3fb | 894 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
895 | IEEE80211_AC_BE, |
896 | IEEE80211_AC_BK, | |
897 | IEEE80211_AC_BK, | |
898 | IEEE80211_AC_BE, | |
899 | IEEE80211_AC_VI, | |
900 | IEEE80211_AC_VI, | |
901 | IEEE80211_AC_VO, | |
902 | IEEE80211_AC_VO, | |
903 | }; | |
904 | ||
3e56eadf JB |
905 | static const u8 tid_to_ucode_ac[] = { |
906 | AC_BE, | |
907 | AC_BK, | |
908 | AC_BK, | |
909 | AC_BE, | |
910 | AC_VI, | |
911 | AC_VI, | |
912 | AC_VO, | |
913 | AC_VO, | |
914 | }; | |
915 | ||
8ca151b5 JB |
916 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
917 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
918 | { | |
5b577a90 | 919 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
920 | struct iwl_mvm_tid_data *tid_data; |
921 | int txq_id; | |
922 | ||
923 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
924 | return -EINVAL; | |
925 | ||
926 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
927 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
928 | mvmsta->tid_data[tid].state); | |
929 | return -ENXIO; | |
930 | } | |
931 | ||
932 | lockdep_assert_held(&mvm->mutex); | |
933 | ||
19e737c9 EL |
934 | for (txq_id = mvm->first_agg_queue; |
935 | txq_id <= mvm->last_agg_queue; txq_id++) | |
8ca151b5 JB |
936 | if (mvm->queue_to_mac80211[txq_id] == |
937 | IWL_INVALID_MAC80211_QUEUE) | |
938 | break; | |
939 | ||
19e737c9 | 940 | if (txq_id > mvm->last_agg_queue) { |
8ca151b5 JB |
941 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); |
942 | return -EIO; | |
943 | } | |
944 | ||
b2492501 AN |
945 | spin_lock_bh(&mvmsta->lock); |
946 | ||
947 | /* possible race condition - we entered D0i3 while starting agg */ | |
948 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
949 | spin_unlock_bh(&mvmsta->lock); | |
950 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
951 | return -EIO; | |
952 | } | |
953 | ||
8ca151b5 | 954 | /* the new tx queue is still connected to the same mac80211 queue */ |
3e56eadf | 955 | mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 956 | |
8ca151b5 | 957 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 958 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
959 | tid_data->txq_id = txq_id; |
960 | *ssn = tid_data->ssn; | |
961 | ||
962 | IWL_DEBUG_TX_QUEUES(mvm, | |
963 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
964 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
965 | tid_data->next_reclaimed); | |
966 | ||
967 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
968 | tid_data->state = IWL_AGG_STARTING; | |
969 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
970 | } else { | |
971 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
972 | } | |
973 | ||
974 | spin_unlock_bh(&mvmsta->lock); | |
975 | ||
976 | return 0; | |
977 | } | |
978 | ||
979 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
980 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
981 | { | |
5b577a90 | 982 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 983 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
4cf677fd EG |
984 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
985 | mvm->cfg->base_params->wd_timeout : | |
986 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
987 | int queue, fifo, ret; |
988 | u16 ssn; | |
989 | ||
efed6640 ES |
990 | BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) |
991 | != IWL_MAX_TID_COUNT); | |
992 | ||
8ca151b5 JB |
993 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); |
994 | ||
995 | spin_lock_bh(&mvmsta->lock); | |
996 | ssn = tid_data->ssn; | |
997 | queue = tid_data->txq_id; | |
998 | tid_data->state = IWL_AGG_ON; | |
efed6640 | 999 | mvmsta->agg_tids |= BIT(tid); |
8ca151b5 JB |
1000 | tid_data->ssn = 0xffff; |
1001 | spin_unlock_bh(&mvmsta->lock); | |
1002 | ||
3e56eadf | 1003 | fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 JB |
1004 | |
1005 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); | |
1006 | if (ret) | |
1007 | return -EIO; | |
1008 | ||
3edf8ff6 | 1009 | iwl_mvm_enable_agg_txq(mvm, queue, fifo, mvmsta->sta_id, tid, |
4cf677fd | 1010 | buf_size, ssn, wdg_timeout); |
8ca151b5 JB |
1011 | |
1012 | /* | |
1013 | * Even though in theory the peer could have different | |
1014 | * aggregation reorder buffer sizes for different sessions, | |
1015 | * our ucode doesn't allow for that and has a global limit | |
1016 | * for each station. Therefore, use the minimum of all the | |
1017 | * aggregation sessions and our default value. | |
1018 | */ | |
1019 | mvmsta->max_agg_bufsize = | |
1020 | min(mvmsta->max_agg_bufsize, buf_size); | |
1021 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
1022 | ||
9ee718aa EL |
1023 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
1024 | sta->addr, tid); | |
1025 | ||
9e680946 | 1026 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
1027 | } |
1028 | ||
1029 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1030 | struct ieee80211_sta *sta, u16 tid) | |
1031 | { | |
5b577a90 | 1032 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1033 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1034 | u16 txq_id; | |
1035 | int err; | |
1036 | ||
f9aa8dd3 EG |
1037 | |
1038 | /* | |
1039 | * If mac80211 is cleaning its state, then say that we finished since | |
1040 | * our state has been cleared anyway. | |
1041 | */ | |
1042 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
1043 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1044 | return 0; | |
1045 | } | |
1046 | ||
8ca151b5 JB |
1047 | spin_lock_bh(&mvmsta->lock); |
1048 | ||
1049 | txq_id = tid_data->txq_id; | |
1050 | ||
1051 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
1052 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
1053 | ||
efed6640 ES |
1054 | mvmsta->agg_tids &= ~BIT(tid); |
1055 | ||
8ca151b5 JB |
1056 | switch (tid_data->state) { |
1057 | case IWL_AGG_ON: | |
9a886586 | 1058 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
1059 | |
1060 | IWL_DEBUG_TX_QUEUES(mvm, | |
1061 | "ssn = %d, next_recl = %d\n", | |
1062 | tid_data->ssn, tid_data->next_reclaimed); | |
1063 | ||
1064 | /* There are still packets for this RA / TID in the HW */ | |
1065 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
1066 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
1067 | err = 0; | |
1068 | break; | |
1069 | } | |
1070 | ||
1071 | tid_data->ssn = 0xffff; | |
f7f89e7b JB |
1072 | tid_data->state = IWL_AGG_OFF; |
1073 | mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE; | |
1074 | spin_unlock_bh(&mvmsta->lock); | |
1075 | ||
1076 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1077 | ||
1078 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); | |
1079 | ||
0294d9ee | 1080 | iwl_mvm_disable_txq(mvm, txq_id, 0); |
f7f89e7b | 1081 | return 0; |
8ca151b5 JB |
1082 | case IWL_AGG_STARTING: |
1083 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1084 | /* | |
1085 | * The agg session has been stopped before it was set up. This | |
1086 | * can happen when the AddBA timer times out for example. | |
1087 | */ | |
1088 | ||
1089 | /* No barriers since we are under mutex */ | |
1090 | lockdep_assert_held(&mvm->mutex); | |
1091 | mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE; | |
1092 | ||
1093 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1094 | tid_data->state = IWL_AGG_OFF; | |
1095 | err = 0; | |
1096 | break; | |
1097 | default: | |
1098 | IWL_ERR(mvm, | |
1099 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
1100 | mvmsta->sta_id, tid, tid_data->state); | |
1101 | IWL_ERR(mvm, | |
1102 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
1103 | err = -EINVAL; | |
1104 | } | |
1105 | ||
1106 | spin_unlock_bh(&mvmsta->lock); | |
1107 | ||
1108 | return err; | |
1109 | } | |
1110 | ||
e3d9e7ce EG |
1111 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
1112 | struct ieee80211_sta *sta, u16 tid) | |
1113 | { | |
5b577a90 | 1114 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
1115 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1116 | u16 txq_id; | |
b6658ff8 | 1117 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
1118 | |
1119 | /* | |
1120 | * First set the agg state to OFF to avoid calling | |
1121 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
1122 | */ | |
1123 | spin_lock_bh(&mvmsta->lock); | |
1124 | txq_id = tid_data->txq_id; | |
1125 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
1126 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 1127 | old_state = tid_data->state; |
e3d9e7ce | 1128 | tid_data->state = IWL_AGG_OFF; |
efed6640 | 1129 | mvmsta->agg_tids &= ~BIT(tid); |
e3d9e7ce EG |
1130 | spin_unlock_bh(&mvmsta->lock); |
1131 | ||
b6658ff8 | 1132 | if (old_state >= IWL_AGG_ON) { |
fe92e32a | 1133 | iwl_mvm_drain_sta(mvm, mvmsta, true); |
b6658ff8 JB |
1134 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true)) |
1135 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); | |
fe92e32a EG |
1136 | iwl_trans_wait_tx_queue_empty(mvm->trans, |
1137 | mvmsta->tfd_queue_msk); | |
1138 | iwl_mvm_drain_sta(mvm, mvmsta, false); | |
b6658ff8 | 1139 | |
f7f89e7b JB |
1140 | iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); |
1141 | ||
0294d9ee | 1142 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, 0); |
b6658ff8 | 1143 | } |
e3d9e7ce | 1144 | |
e3d9e7ce EG |
1145 | mvm->queue_to_mac80211[tid_data->txq_id] = |
1146 | IWL_INVALID_MAC80211_QUEUE; | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | ||
8ca151b5 JB |
1151 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
1152 | { | |
1153 | int i; | |
1154 | ||
1155 | lockdep_assert_held(&mvm->mutex); | |
1156 | ||
1157 | i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM); | |
1158 | ||
1159 | if (i == STA_KEY_MAX_NUM) | |
1160 | return STA_KEY_IDX_INVALID; | |
1161 | ||
1162 | __set_bit(i, mvm->fw_key_table); | |
1163 | ||
1164 | return i; | |
1165 | } | |
1166 | ||
1167 | static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif, | |
1168 | struct ieee80211_sta *sta) | |
1169 | { | |
5b530e95 | 1170 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1171 | |
1172 | if (sta) { | |
9d8ce6af | 1173 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1174 | |
1175 | return mvm_sta->sta_id; | |
1176 | } | |
1177 | ||
1178 | /* | |
1179 | * The device expects GTKs for station interfaces to be | |
1180 | * installed as GTKs for the AP station. If we have no | |
1181 | * station ID, then use AP's station ID. | |
1182 | */ | |
1183 | if (vif->type == NL80211_IFTYPE_STATION && | |
1184 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) | |
1185 | return mvmvif->ap_sta_id; | |
1186 | ||
881acd89 | 1187 | return IWL_MVM_STATION_COUNT; |
8ca151b5 JB |
1188 | } |
1189 | ||
1190 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1191 | struct iwl_mvm_sta *mvm_sta, | |
ba3943b0 | 1192 | struct ieee80211_key_conf *keyconf, bool mcast, |
2f6319d1 | 1193 | u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags) |
8ca151b5 | 1194 | { |
5a258aae | 1195 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1196 | __le16 key_flags; |
79920749 JB |
1197 | int ret; |
1198 | u32 status; | |
8ca151b5 JB |
1199 | u16 keyidx; |
1200 | int i; | |
2f6319d1 | 1201 | u8 sta_id = mvm_sta->sta_id; |
8ca151b5 JB |
1202 | |
1203 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1204 | STA_KEY_FLG_KEYID_MSK; | |
1205 | key_flags = cpu_to_le16(keyidx); | |
1206 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1207 | ||
1208 | switch (keyconf->cipher) { | |
1209 | case WLAN_CIPHER_SUITE_TKIP: | |
1210 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1211 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1212 | for (i = 0; i < 5; i++) |
5a258aae MS |
1213 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1214 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1215 | break; |
1216 | case WLAN_CIPHER_SUITE_CCMP: | |
1217 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1218 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 | 1219 | break; |
ba3943b0 JB |
1220 | case WLAN_CIPHER_SUITE_WEP104: |
1221 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); | |
aa0cb08b | 1222 | /* fall through */ |
ba3943b0 JB |
1223 | case WLAN_CIPHER_SUITE_WEP40: |
1224 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); | |
1225 | memcpy(cmd.key + 3, keyconf->key, keyconf->keylen); | |
1226 | break; | |
8ca151b5 | 1227 | default: |
e36e5433 MS |
1228 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1229 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1230 | } |
1231 | ||
ba3943b0 | 1232 | if (mcast) |
8ca151b5 JB |
1233 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1234 | ||
5a258aae MS |
1235 | cmd.key_offset = keyconf->hw_key_idx; |
1236 | cmd.key_flags = key_flags; | |
8ca151b5 JB |
1237 | cmd.sta_id = sta_id; |
1238 | ||
1239 | status = ADD_STA_SUCCESS; | |
a1022927 | 1240 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1241 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1242 | sizeof(cmd), &cmd); | |
a1022927 EG |
1243 | else |
1244 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1245 | &cmd, &status); | |
8ca151b5 JB |
1246 | |
1247 | switch (status) { | |
1248 | case ADD_STA_SUCCESS: | |
1249 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1250 | break; | |
1251 | default: | |
1252 | ret = -EIO; | |
1253 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1254 | break; | |
1255 | } | |
1256 | ||
1257 | return ret; | |
1258 | } | |
1259 | ||
1260 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1261 | struct ieee80211_key_conf *keyconf, | |
1262 | u8 sta_id, bool remove_key) | |
1263 | { | |
1264 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1265 | ||
1266 | /* verify the key details match the required command's expectations */ | |
1267 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1268 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1269 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1270 | return -EINVAL; | |
1271 | ||
1272 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1273 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1274 | ||
1275 | if (remove_key) { | |
1276 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1277 | } else { | |
1278 | struct ieee80211_key_seq seq; | |
1279 | const u8 *pn; | |
1280 | ||
1281 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
1282 | ieee80211_aes_cmac_calculate_k1_k2(keyconf, | |
1283 | igtk_cmd.K1, igtk_cmd.K2); | |
1284 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1285 | pn = seq.aes_cmac.pn; | |
1286 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1287 | ((u64) pn[4] << 8) | | |
1288 | ((u64) pn[3] << 16) | | |
1289 | ((u64) pn[2] << 24) | | |
1290 | ((u64) pn[1] << 32) | | |
1291 | ((u64) pn[0] << 40)); | |
1292 | } | |
1293 | ||
1294 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1295 | remove_key ? "removing" : "installing", | |
1296 | igtk_cmd.sta_id); | |
1297 | ||
a1022927 | 1298 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1299 | sizeof(igtk_cmd), &igtk_cmd); |
1300 | } | |
1301 | ||
1302 | ||
1303 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1304 | struct ieee80211_vif *vif, | |
1305 | struct ieee80211_sta *sta) | |
1306 | { | |
5b530e95 | 1307 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
8ca151b5 JB |
1308 | |
1309 | if (sta) | |
1310 | return sta->addr; | |
1311 | ||
1312 | if (vif->type == NL80211_IFTYPE_STATION && | |
1313 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1314 | u8 sta_id = mvmvif->ap_sta_id; | |
1315 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1316 | lockdep_is_held(&mvm->mutex)); | |
1317 | return sta->addr; | |
1318 | } | |
1319 | ||
1320 | ||
1321 | return NULL; | |
1322 | } | |
1323 | ||
2f6319d1 JB |
1324 | static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1325 | struct ieee80211_vif *vif, | |
1326 | struct ieee80211_sta *sta, | |
ba3943b0 JB |
1327 | struct ieee80211_key_conf *keyconf, |
1328 | bool mcast) | |
2f6319d1 JB |
1329 | { |
1330 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1331 | int ret; | |
1332 | const u8 *addr; | |
1333 | struct ieee80211_key_seq seq; | |
1334 | u16 p1k[5]; | |
1335 | ||
1336 | switch (keyconf->cipher) { | |
1337 | case WLAN_CIPHER_SUITE_TKIP: | |
1338 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1339 | /* get phase 1 key from mac80211 */ | |
1340 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1341 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
ba3943b0 | 1342 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
2f6319d1 JB |
1343 | seq.tkip.iv32, p1k, 0); |
1344 | break; | |
1345 | case WLAN_CIPHER_SUITE_CCMP: | |
ba3943b0 JB |
1346 | case WLAN_CIPHER_SUITE_WEP40: |
1347 | case WLAN_CIPHER_SUITE_WEP104: | |
1348 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, | |
2f6319d1 JB |
1349 | 0, NULL, 0); |
1350 | break; | |
1351 | default: | |
ba3943b0 | 1352 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
2f6319d1 JB |
1353 | 0, NULL, 0); |
1354 | } | |
1355 | ||
1356 | return ret; | |
1357 | } | |
1358 | ||
1359 | static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, | |
ba3943b0 JB |
1360 | struct ieee80211_key_conf *keyconf, |
1361 | bool mcast) | |
2f6319d1 JB |
1362 | { |
1363 | struct iwl_mvm_add_sta_key_cmd cmd = {}; | |
1364 | __le16 key_flags; | |
1365 | int ret; | |
1366 | u32 status; | |
1367 | ||
1368 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1369 | STA_KEY_FLG_KEYID_MSK); | |
1370 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); | |
1371 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1372 | ||
ba3943b0 | 1373 | if (mcast) |
2f6319d1 JB |
1374 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); |
1375 | ||
1376 | cmd.key_flags = key_flags; | |
1377 | cmd.key_offset = keyconf->hw_key_idx; | |
1378 | cmd.sta_id = sta_id; | |
1379 | ||
1380 | status = ADD_STA_SUCCESS; | |
1381 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1382 | &cmd, &status); | |
1383 | ||
1384 | switch (status) { | |
1385 | case ADD_STA_SUCCESS: | |
1386 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1387 | break; | |
1388 | default: | |
1389 | ret = -EIO; | |
1390 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1391 | break; | |
1392 | } | |
1393 | ||
1394 | return ret; | |
1395 | } | |
1396 | ||
8ca151b5 JB |
1397 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, |
1398 | struct ieee80211_vif *vif, | |
1399 | struct ieee80211_sta *sta, | |
1400 | struct ieee80211_key_conf *keyconf, | |
1401 | bool have_key_offset) | |
1402 | { | |
ba3943b0 | 1403 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
2f6319d1 | 1404 | u8 sta_id; |
8ca151b5 | 1405 | int ret; |
8ca151b5 JB |
1406 | |
1407 | lockdep_assert_held(&mvm->mutex); | |
1408 | ||
1409 | /* Get the station id from the mvm local station table */ | |
1410 | sta_id = iwl_mvm_get_key_sta_id(vif, sta); | |
881acd89 | 1411 | if (sta_id == IWL_MVM_STATION_COUNT) { |
8ca151b5 JB |
1412 | IWL_ERR(mvm, "Failed to find station id\n"); |
1413 | return -EINVAL; | |
1414 | } | |
1415 | ||
1416 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1417 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1418 | goto end; | |
1419 | } | |
1420 | ||
1421 | /* | |
1422 | * It is possible that the 'sta' parameter is NULL, and thus | |
1423 | * there is a need to retrieve the sta from the local station table. | |
1424 | */ | |
1425 | if (!sta) { | |
1426 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1427 | lockdep_is_held(&mvm->mutex)); | |
1428 | if (IS_ERR_OR_NULL(sta)) { | |
1429 | IWL_ERR(mvm, "Invalid station id\n"); | |
1430 | return -EINVAL; | |
1431 | } | |
1432 | } | |
1433 | ||
2f6319d1 | 1434 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1435 | return -EINVAL; |
1436 | ||
1437 | if (!have_key_offset) { | |
1438 | /* | |
1439 | * The D3 firmware hardcodes the PTK offset to 0, so we have to | |
1440 | * configure it there. As a result, this workaround exists to | |
1441 | * let the caller set the key offset (hw_key_idx), see d3.c. | |
1442 | */ | |
1443 | keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm); | |
1444 | if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) | |
1445 | return -ENOSPC; | |
1446 | } | |
1447 | ||
ba3943b0 JB |
1448 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, mcast); |
1449 | if (ret) { | |
8ca151b5 | 1450 | __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table); |
ba3943b0 JB |
1451 | goto end; |
1452 | } | |
1453 | ||
1454 | /* | |
1455 | * For WEP, the same key is used for multicast and unicast. Upload it | |
1456 | * again, using the same key offset, and now pointing the other one | |
1457 | * to the same key slot (offset). | |
1458 | * If this fails, remove the original as well. | |
1459 | */ | |
1460 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1461 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) { | |
1462 | ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, !mcast); | |
1463 | if (ret) { | |
1464 | __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table); | |
1465 | __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); | |
1466 | } | |
1467 | } | |
8ca151b5 JB |
1468 | |
1469 | end: | |
1470 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1471 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
1472 | sta->addr, ret); | |
1473 | return ret; | |
1474 | } | |
1475 | ||
1476 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1477 | struct ieee80211_vif *vif, | |
1478 | struct ieee80211_sta *sta, | |
1479 | struct ieee80211_key_conf *keyconf) | |
1480 | { | |
ba3943b0 | 1481 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1482 | u8 sta_id; |
ba3943b0 | 1483 | int ret; |
8ca151b5 JB |
1484 | |
1485 | lockdep_assert_held(&mvm->mutex); | |
1486 | ||
1487 | /* Get the station id from the mvm local station table */ | |
1488 | sta_id = iwl_mvm_get_key_sta_id(vif, sta); | |
1489 | ||
1490 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1491 | keyconf->keyidx, sta_id); | |
1492 | ||
1493 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1494 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1495 | ||
2f6319d1 | 1496 | if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { |
8ca151b5 JB |
1497 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", |
1498 | keyconf->hw_key_idx); | |
1499 | return -ENOENT; | |
1500 | } | |
1501 | ||
881acd89 | 1502 | if (sta_id == IWL_MVM_STATION_COUNT) { |
8ca151b5 JB |
1503 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1504 | return 0; | |
1505 | } | |
1506 | ||
1507 | /* | |
1508 | * It is possible that the 'sta' parameter is NULL, and thus | |
1509 | * there is a need to retrieve the sta from the local station table, | |
1510 | * for example when a GTK is removed (where the sta_id will then be | |
1511 | * the AP ID, and no station was passed by mac80211.) | |
1512 | */ | |
1513 | if (!sta) { | |
1514 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1515 | lockdep_is_held(&mvm->mutex)); | |
1516 | if (!sta) { | |
1517 | IWL_ERR(mvm, "Invalid station id\n"); | |
1518 | return -EINVAL; | |
1519 | } | |
1520 | } | |
1521 | ||
2f6319d1 | 1522 | if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) |
8ca151b5 JB |
1523 | return -EINVAL; |
1524 | ||
ba3943b0 JB |
1525 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); |
1526 | if (ret) | |
1527 | return ret; | |
1528 | ||
1529 | /* delete WEP key twice to get rid of (now useless) offset */ | |
1530 | if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
1531 | keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) | |
1532 | ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); | |
1533 | ||
1534 | return ret; | |
8ca151b5 JB |
1535 | } |
1536 | ||
1537 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1538 | struct ieee80211_vif *vif, | |
1539 | struct ieee80211_key_conf *keyconf, | |
1540 | struct ieee80211_sta *sta, u32 iv32, | |
1541 | u16 *phase1key) | |
1542 | { | |
c3eb536a | 1543 | struct iwl_mvm_sta *mvm_sta; |
8ca151b5 | 1544 | u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta); |
ba3943b0 | 1545 | bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); |
8ca151b5 | 1546 | |
881acd89 | 1547 | if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT)) |
8ca151b5 JB |
1548 | return; |
1549 | ||
c3eb536a BL |
1550 | rcu_read_lock(); |
1551 | ||
1552 | if (!sta) { | |
1553 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1554 | if (WARN_ON(IS_ERR_OR_NULL(sta))) { | |
1555 | rcu_read_unlock(); | |
1556 | return; | |
1557 | } | |
1558 | } | |
1559 | ||
2f6319d1 | 1560 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); |
ba3943b0 | 1561 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, mcast, |
8ca151b5 | 1562 | iv32, phase1key, CMD_ASYNC); |
c3eb536a | 1563 | rcu_read_unlock(); |
8ca151b5 JB |
1564 | } |
1565 | ||
9cc40712 JB |
1566 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1567 | struct ieee80211_sta *sta) | |
8ca151b5 | 1568 | { |
5b577a90 | 1569 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1570 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1571 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1572 | .sta_id = mvmsta->sta_id, |
5af01772 | 1573 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1574 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1575 | }; |
1576 | int ret; | |
1577 | ||
f9dc0004 | 1578 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
8ca151b5 JB |
1579 | if (ret) |
1580 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1581 | } | |
1582 | ||
9cc40712 JB |
1583 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1584 | struct ieee80211_sta *sta, | |
8ca151b5 | 1585 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1586 | u16 cnt, u16 tids, bool more_data, |
1587 | bool agg) | |
8ca151b5 | 1588 | { |
5b577a90 | 1589 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1590 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1591 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1592 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1593 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1594 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1595 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1596 | }; |
3e56eadf JB |
1597 | int tid, ret; |
1598 | unsigned long _tids = tids; | |
1599 | ||
1600 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1601 | * Note that this field is reserved and unused by firmware not | |
1602 | * supporting GO uAPSD, so it's safe to always do this. | |
1603 | */ | |
1604 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1605 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1606 | ||
1607 | /* If we're releasing frames from aggregation queues then check if the | |
1608 | * all queues combined that we're releasing frames from have | |
1609 | * - more frames than the service period, in which case more_data | |
1610 | * needs to be set | |
1611 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
1612 | * firmware command (but do that unconditionally) | |
1613 | */ | |
1614 | if (agg) { | |
1615 | int remaining = cnt; | |
1616 | ||
1617 | spin_lock_bh(&mvmsta->lock); | |
1618 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
1619 | struct iwl_mvm_tid_data *tid_data; | |
1620 | u16 n_queued; | |
1621 | ||
1622 | tid_data = &mvmsta->tid_data[tid]; | |
1623 | if (WARN(tid_data->state != IWL_AGG_ON && | |
1624 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
1625 | "TID %d state is %d\n", | |
1626 | tid, tid_data->state)) { | |
1627 | spin_unlock_bh(&mvmsta->lock); | |
1628 | ieee80211_sta_eosp(sta); | |
1629 | return; | |
1630 | } | |
1631 | ||
1632 | n_queued = iwl_mvm_tid_queued(tid_data); | |
1633 | if (n_queued > remaining) { | |
1634 | more_data = true; | |
1635 | remaining = 0; | |
1636 | break; | |
1637 | } | |
1638 | remaining -= n_queued; | |
1639 | } | |
1640 | spin_unlock_bh(&mvmsta->lock); | |
1641 | ||
1642 | cmd.sleep_tx_count = cpu_to_le16(cnt - remaining); | |
1643 | if (WARN_ON(cnt - remaining == 0)) { | |
1644 | ieee80211_sta_eosp(sta); | |
1645 | return; | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
1650 | if (more_data) | |
1651 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
1652 | ||
1653 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
1654 | mvmsta->next_status_eosp = true; | |
1655 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
1656 | } else { | |
1657 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
1658 | } | |
8ca151b5 | 1659 | |
f9dc0004 | 1660 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
8ca151b5 JB |
1661 | if (ret) |
1662 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1663 | } | |
3e56eadf JB |
1664 | |
1665 | int iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, | |
1666 | struct iwl_rx_cmd_buffer *rxb, | |
1667 | struct iwl_device_cmd *cmd) | |
1668 | { | |
1669 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1670 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
1671 | struct ieee80211_sta *sta; | |
1672 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
1673 | ||
1674 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
1675 | return 0; | |
1676 | ||
1677 | rcu_read_lock(); | |
1678 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1679 | if (!IS_ERR_OR_NULL(sta)) | |
1680 | ieee80211_sta_eosp(sta); | |
1681 | rcu_read_unlock(); | |
1682 | ||
1683 | return 0; | |
1684 | } | |
09b0ce1a AO |
1685 | |
1686 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
1687 | struct iwl_mvm_sta *mvmsta, bool disable) | |
1688 | { | |
1689 | struct iwl_mvm_add_sta_cmd cmd = { | |
1690 | .add_modify = STA_MODE_MODIFY, | |
1691 | .sta_id = mvmsta->sta_id, | |
1692 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
1693 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
1694 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
1695 | }; | |
1696 | int ret; | |
1697 | ||
09b0ce1a AO |
1698 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
1699 | if (ret) | |
1700 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1701 | } | |
003e5236 AO |
1702 | |
1703 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
1704 | struct ieee80211_sta *sta, | |
1705 | bool disable) | |
1706 | { | |
1707 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1708 | ||
1709 | spin_lock_bh(&mvm_sta->lock); | |
1710 | ||
1711 | if (mvm_sta->disable_tx == disable) { | |
1712 | spin_unlock_bh(&mvm_sta->lock); | |
1713 | return; | |
1714 | } | |
1715 | ||
1716 | mvm_sta->disable_tx = disable; | |
1717 | ||
1718 | /* | |
1719 | * Tell mac80211 to start/stop queueing tx for this station, | |
1720 | * but don't stop queueing if there are still pending frames | |
1721 | * for this station. | |
1722 | */ | |
1723 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
1724 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
1725 | ||
1726 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
1727 | ||
1728 | spin_unlock_bh(&mvm_sta->lock); | |
1729 | } | |
1730 | ||
1731 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
1732 | struct iwl_mvm_vif *mvmvif, | |
1733 | bool disable) | |
1734 | { | |
1735 | struct ieee80211_sta *sta; | |
1736 | struct iwl_mvm_sta *mvm_sta; | |
1737 | int i; | |
1738 | ||
1739 | lockdep_assert_held(&mvm->mutex); | |
1740 | ||
1741 | /* Block/unblock all the stations of the given mvmvif */ | |
1742 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
1743 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
1744 | lockdep_is_held(&mvm->mutex)); | |
1745 | if (IS_ERR_OR_NULL(sta)) | |
1746 | continue; | |
1747 | ||
1748 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1749 | if (mvm_sta->mac_id_n_color != | |
1750 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
1751 | continue; | |
1752 | ||
1753 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
1754 | } | |
1755 | } | |
dc88b4ba LC |
1756 | |
1757 | void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1758 | { | |
1759 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1760 | struct iwl_mvm_sta *mvmsta; | |
1761 | ||
1762 | rcu_read_lock(); | |
1763 | ||
1764 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); | |
1765 | ||
1766 | if (!WARN_ON(!mvmsta)) | |
1767 | iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); | |
1768 | ||
1769 | rcu_read_unlock(); | |
1770 | } |