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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 JB |
101 | { |
102 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
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 | ||
207 | int iwl_mvm_add_sta(struct iwl_mvm *mvm, | |
208 | struct ieee80211_vif *vif, | |
209 | struct ieee80211_sta *sta) | |
210 | { | |
211 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
212 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
213 | int i, ret, sta_id; | |
214 | ||
215 | lockdep_assert_held(&mvm->mutex); | |
216 | ||
217 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) | |
b92e661b EP |
218 | sta_id = iwl_mvm_find_free_sta_id(mvm, |
219 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
220 | else |
221 | sta_id = mvm_sta->sta_id; | |
222 | ||
223 | if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT)) | |
224 | return -ENOSPC; | |
225 | ||
226 | spin_lock_init(&mvm_sta->lock); | |
227 | ||
228 | mvm_sta->sta_id = sta_id; | |
229 | mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, | |
230 | mvmvif->color); | |
231 | mvm_sta->vif = vif; | |
232 | mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
9ee718aa EL |
233 | mvm_sta->tx_protection = 0; |
234 | mvm_sta->tt_tx_protection = false; | |
8ca151b5 JB |
235 | |
236 | /* HW restart, don't assume the memory has been zeroed */ | |
e3d4bc8c | 237 | atomic_set(&mvm->pending_frames[sta_id], 0); |
8ca151b5 JB |
238 | mvm_sta->tid_disable_agg = 0; |
239 | mvm_sta->tfd_queue_msk = 0; | |
240 | for (i = 0; i < IEEE80211_NUM_ACS; i++) | |
241 | if (vif->hw_queue[i] != IEEE80211_INVAL_HW_QUEUE) | |
242 | mvm_sta->tfd_queue_msk |= BIT(vif->hw_queue[i]); | |
243 | ||
6d9d32b8 JB |
244 | /* for HW restart - reset everything but the sequence number */ |
245 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
246 | u16 seq = mvm_sta->tid_data[i].seq_number; | |
247 | memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); | |
248 | mvm_sta->tid_data[i].seq_number = seq; | |
249 | } | |
8ca151b5 | 250 | |
7a453973 | 251 | ret = iwl_mvm_sta_send_to_fw(mvm, sta, false); |
8ca151b5 JB |
252 | if (ret) |
253 | return ret; | |
254 | ||
255 | /* The first station added is the AP, the others are TDLS STAs */ | |
256 | if (vif->type == NL80211_IFTYPE_STATION && | |
257 | mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) | |
258 | mvmvif->ap_sta_id = sta_id; | |
259 | ||
260 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
7a453973 JB |
265 | int iwl_mvm_update_sta(struct iwl_mvm *mvm, |
266 | struct ieee80211_vif *vif, | |
267 | struct ieee80211_sta *sta) | |
268 | { | |
269 | return iwl_mvm_sta_send_to_fw(mvm, sta, true); | |
270 | } | |
271 | ||
8ca151b5 JB |
272 | int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, |
273 | bool drain) | |
274 | { | |
f9dc0004 | 275 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
276 | int ret; |
277 | u32 status; | |
278 | ||
279 | lockdep_assert_held(&mvm->mutex); | |
280 | ||
281 | cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); | |
282 | cmd.sta_id = mvmsta->sta_id; | |
283 | cmd.add_modify = STA_MODE_MODIFY; | |
284 | cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; | |
285 | cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); | |
286 | ||
287 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
288 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
289 | &cmd, &status); | |
8ca151b5 JB |
290 | if (ret) |
291 | return ret; | |
292 | ||
293 | switch (status) { | |
294 | case ADD_STA_SUCCESS: | |
295 | IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", | |
296 | mvmsta->sta_id); | |
297 | break; | |
298 | default: | |
299 | ret = -EIO; | |
300 | IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", | |
301 | mvmsta->sta_id); | |
302 | break; | |
303 | } | |
304 | ||
305 | return ret; | |
306 | } | |
307 | ||
308 | /* | |
309 | * Remove a station from the FW table. Before sending the command to remove | |
310 | * the station validate that the station is indeed known to the driver (sanity | |
311 | * only). | |
312 | */ | |
313 | static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) | |
314 | { | |
315 | struct ieee80211_sta *sta; | |
316 | struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { | |
317 | .sta_id = sta_id, | |
318 | }; | |
319 | int ret; | |
320 | ||
321 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
322 | lockdep_is_held(&mvm->mutex)); | |
323 | ||
324 | /* Note: internal stations are marked as error values */ | |
325 | if (!sta) { | |
326 | IWL_ERR(mvm, "Invalid station id\n"); | |
327 | return -EINVAL; | |
328 | } | |
329 | ||
a1022927 | 330 | ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, |
8ca151b5 JB |
331 | sizeof(rm_sta_cmd), &rm_sta_cmd); |
332 | if (ret) { | |
333 | IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); | |
334 | return ret; | |
335 | } | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | void iwl_mvm_sta_drained_wk(struct work_struct *wk) | |
341 | { | |
342 | struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, sta_drained_wk); | |
343 | u8 sta_id; | |
344 | ||
345 | /* | |
346 | * The mutex is needed because of the SYNC cmd, but not only: if the | |
347 | * work would run concurrently with iwl_mvm_rm_sta, it would run before | |
348 | * iwl_mvm_rm_sta sets the station as busy, and exit. Then | |
349 | * iwl_mvm_rm_sta would set the station as busy, and nobody will clean | |
350 | * that later. | |
351 | */ | |
352 | mutex_lock(&mvm->mutex); | |
353 | ||
354 | for_each_set_bit(sta_id, mvm->sta_drained, IWL_MVM_STATION_COUNT) { | |
355 | int ret; | |
356 | struct ieee80211_sta *sta = | |
357 | rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
358 | lockdep_is_held(&mvm->mutex)); | |
359 | ||
1ddbbb0c JB |
360 | /* |
361 | * This station is in use or RCU-removed; the latter happens in | |
362 | * managed mode, where mac80211 removes the station before we | |
363 | * can remove it from firmware (we can only do that after the | |
364 | * MAC is marked unassociated), and possibly while the deauth | |
365 | * frame to disconnect from the AP is still queued. Then, the | |
366 | * station pointer is -ENOENT when the last skb is reclaimed. | |
367 | */ | |
368 | if (!IS_ERR(sta) || PTR_ERR(sta) == -ENOENT) | |
8ca151b5 JB |
369 | continue; |
370 | ||
371 | if (PTR_ERR(sta) == -EINVAL) { | |
372 | IWL_ERR(mvm, "Drained sta %d, but it is internal?\n", | |
373 | sta_id); | |
374 | continue; | |
375 | } | |
376 | ||
377 | if (!sta) { | |
378 | IWL_ERR(mvm, "Drained sta %d, but it was NULL?\n", | |
379 | sta_id); | |
380 | continue; | |
381 | } | |
382 | ||
383 | WARN_ON(PTR_ERR(sta) != -EBUSY); | |
384 | /* This station was removed and we waited until it got drained, | |
385 | * we can now proceed and remove it. | |
386 | */ | |
387 | ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
388 | if (ret) { | |
389 | IWL_ERR(mvm, | |
390 | "Couldn't remove sta %d after it was drained\n", | |
391 | sta_id); | |
392 | continue; | |
393 | } | |
c531c771 | 394 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
395 | clear_bit(sta_id, mvm->sta_drained); |
396 | } | |
397 | ||
398 | mutex_unlock(&mvm->mutex); | |
399 | } | |
400 | ||
401 | int iwl_mvm_rm_sta(struct iwl_mvm *mvm, | |
402 | struct ieee80211_vif *vif, | |
403 | struct ieee80211_sta *sta) | |
404 | { | |
405 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
406 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
407 | int ret; | |
408 | ||
409 | lockdep_assert_held(&mvm->mutex); | |
410 | ||
411 | if (vif->type == NL80211_IFTYPE_STATION && | |
412 | mvmvif->ap_sta_id == mvm_sta->sta_id) { | |
80d85655 EG |
413 | /* flush its queues here since we are freeing mvm_sta */ |
414 | ret = iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, true); | |
415 | ||
8ca151b5 JB |
416 | /* if we are associated - we can't remove the AP STA now */ |
417 | if (vif->bss_conf.assoc) | |
418 | return ret; | |
419 | ||
420 | /* unassoc - go ahead - remove the AP STA now */ | |
421 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
37577fe2 EP |
422 | |
423 | /* clear d0i3_ap_sta_id if no longer relevant */ | |
424 | if (mvm->d0i3_ap_sta_id == mvm_sta->sta_id) | |
425 | mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; | |
8ca151b5 JB |
426 | } |
427 | ||
e3d4bc8c EG |
428 | /* |
429 | * Make sure that the tx response code sees the station as -EBUSY and | |
430 | * calls the drain worker. | |
431 | */ | |
432 | spin_lock_bh(&mvm_sta->lock); | |
8ca151b5 JB |
433 | /* |
434 | * There are frames pending on the AC queues for this station. | |
435 | * We need to wait until all the frames are drained... | |
436 | */ | |
e3d4bc8c | 437 | if (atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) { |
8ca151b5 JB |
438 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], |
439 | ERR_PTR(-EBUSY)); | |
e3d4bc8c EG |
440 | spin_unlock_bh(&mvm_sta->lock); |
441 | ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); | |
8ca151b5 | 442 | } else { |
e3d4bc8c | 443 | spin_unlock_bh(&mvm_sta->lock); |
8ca151b5 | 444 | ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); |
c531c771 | 445 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); |
8ca151b5 JB |
446 | } |
447 | ||
448 | return ret; | |
449 | } | |
450 | ||
451 | int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, | |
452 | struct ieee80211_vif *vif, | |
453 | u8 sta_id) | |
454 | { | |
455 | int ret = iwl_mvm_rm_sta_common(mvm, sta_id); | |
456 | ||
457 | lockdep_assert_held(&mvm->mutex); | |
458 | ||
c531c771 | 459 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); |
8ca151b5 JB |
460 | return ret; |
461 | } | |
462 | ||
463 | int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta, | |
b92e661b | 464 | u32 qmask, enum nl80211_iftype iftype) |
8ca151b5 JB |
465 | { |
466 | if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
b92e661b | 467 | sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); |
8ca151b5 JB |
468 | if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_STATION_COUNT)) |
469 | return -ENOSPC; | |
470 | } | |
471 | ||
472 | sta->tfd_queue_msk = qmask; | |
473 | ||
474 | /* put a non-NULL value so iterating over the stations won't stop */ | |
475 | rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); | |
476 | return 0; | |
477 | } | |
478 | ||
479 | void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) | |
480 | { | |
c531c771 | 481 | RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); |
8ca151b5 JB |
482 | memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); |
483 | sta->sta_id = IWL_MVM_STATION_COUNT; | |
484 | } | |
485 | ||
486 | static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, | |
487 | struct iwl_mvm_int_sta *sta, | |
488 | const u8 *addr, | |
489 | u16 mac_id, u16 color) | |
490 | { | |
f9dc0004 | 491 | struct iwl_mvm_add_sta_cmd cmd; |
8ca151b5 JB |
492 | int ret; |
493 | u32 status; | |
494 | ||
495 | lockdep_assert_held(&mvm->mutex); | |
496 | ||
f9dc0004 | 497 | memset(&cmd, 0, sizeof(cmd)); |
8ca151b5 JB |
498 | cmd.sta_id = sta->sta_id; |
499 | cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, | |
500 | color)); | |
501 | ||
502 | cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); | |
503 | ||
504 | if (addr) | |
505 | memcpy(cmd.addr, addr, ETH_ALEN); | |
506 | ||
f9dc0004 EG |
507 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
508 | &cmd, &status); | |
8ca151b5 JB |
509 | if (ret) |
510 | return ret; | |
511 | ||
512 | switch (status) { | |
513 | case ADD_STA_SUCCESS: | |
514 | IWL_DEBUG_INFO(mvm, "Internal station added.\n"); | |
515 | return 0; | |
516 | default: | |
517 | ret = -EIO; | |
518 | IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", | |
519 | status); | |
520 | break; | |
521 | } | |
522 | return ret; | |
523 | } | |
524 | ||
525 | int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) | |
526 | { | |
527 | int ret; | |
528 | ||
529 | lockdep_assert_held(&mvm->mutex); | |
530 | ||
7da91b0e AM |
531 | /* Map Aux queue to fifo - needs to happen before adding Aux station */ |
532 | iwl_trans_ac_txq_enable(mvm->trans, mvm->aux_queue, | |
533 | IWL_MVM_TX_FIFO_MCAST); | |
534 | ||
535 | /* Allocate aux station and assign to it the aux queue */ | |
536 | ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), | |
b92e661b | 537 | NL80211_IFTYPE_UNSPECIFIED); |
8ca151b5 JB |
538 | if (ret) |
539 | return ret; | |
540 | ||
541 | ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, | |
542 | MAC_INDEX_AUX, 0); | |
543 | ||
544 | if (ret) | |
545 | iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); | |
546 | return ret; | |
547 | } | |
548 | ||
549 | /* | |
550 | * Send the add station command for the vif's broadcast station. | |
551 | * Assumes that the station was already allocated. | |
552 | * | |
553 | * @mvm: the mvm component | |
554 | * @vif: the interface to which the broadcast station is added | |
555 | * @bsta: the broadcast station to add. | |
556 | */ | |
557 | int iwl_mvm_send_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
558 | struct iwl_mvm_int_sta *bsta) | |
559 | { | |
560 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
5023d966 | 561 | static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; |
a4243402 | 562 | const u8 *baddr = _baddr; |
8ca151b5 JB |
563 | |
564 | lockdep_assert_held(&mvm->mutex); | |
565 | ||
5023d966 JB |
566 | if (vif->type == NL80211_IFTYPE_ADHOC) |
567 | baddr = vif->bss_conf.bssid; | |
568 | ||
8ca151b5 JB |
569 | if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_STATION_COUNT)) |
570 | return -ENOSPC; | |
571 | ||
572 | return iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
573 | mvmvif->id, mvmvif->color); | |
574 | } | |
575 | ||
576 | /* Send the FW a request to remove the station from it's internal data | |
577 | * structures, but DO NOT remove the entry from the local data structures. */ | |
578 | int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, | |
579 | struct iwl_mvm_int_sta *bsta) | |
580 | { | |
581 | int ret; | |
582 | ||
583 | lockdep_assert_held(&mvm->mutex); | |
584 | ||
585 | ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id); | |
586 | if (ret) | |
587 | IWL_WARN(mvm, "Failed sending remove station\n"); | |
588 | return ret; | |
589 | } | |
590 | ||
591 | /* Allocate a new station entry for the broadcast station to the given vif, | |
592 | * and send it to the FW. | |
593 | * Note that each P2P mac should have its own broadcast station. | |
594 | * | |
595 | * @mvm: the mvm component | |
596 | * @vif: the interface to which the broadcast station is added | |
597 | * @bsta: the broadcast station to add. */ | |
598 | int iwl_mvm_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
599 | struct iwl_mvm_int_sta *bsta) | |
600 | { | |
601 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
602 | static const u8 baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; | |
603 | u32 qmask; | |
604 | int ret; | |
605 | ||
606 | lockdep_assert_held(&mvm->mutex); | |
607 | ||
608 | qmask = iwl_mvm_mac_get_queues_mask(mvm, vif); | |
b92e661b EP |
609 | ret = iwl_mvm_allocate_int_sta(mvm, bsta, qmask, |
610 | ieee80211_vif_type_p2p(vif)); | |
8ca151b5 JB |
611 | if (ret) |
612 | return ret; | |
613 | ||
614 | ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, | |
615 | mvmvif->id, mvmvif->color); | |
616 | ||
617 | if (ret) | |
618 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
619 | return ret; | |
620 | } | |
621 | ||
622 | /* | |
623 | * Send the FW a request to remove the station from it's internal data | |
624 | * structures, and in addition remove it from the local data structure. | |
625 | */ | |
626 | int iwl_mvm_rm_bcast_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *bsta) | |
627 | { | |
628 | int ret; | |
629 | ||
630 | lockdep_assert_held(&mvm->mutex); | |
631 | ||
632 | ret = iwl_mvm_rm_sta_common(mvm, bsta->sta_id); | |
633 | if (ret) | |
634 | return ret; | |
635 | ||
636 | iwl_mvm_dealloc_int_sta(mvm, bsta); | |
637 | return ret; | |
638 | } | |
639 | ||
113a0447 EG |
640 | #define IWL_MAX_RX_BA_SESSIONS 16 |
641 | ||
8ca151b5 JB |
642 | int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, |
643 | int tid, u16 ssn, bool start) | |
644 | { | |
645 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
f9dc0004 | 646 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
647 | int ret; |
648 | u32 status; | |
649 | ||
650 | lockdep_assert_held(&mvm->mutex); | |
651 | ||
113a0447 EG |
652 | if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { |
653 | IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); | |
654 | return -ENOSPC; | |
655 | } | |
656 | ||
8ca151b5 JB |
657 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); |
658 | cmd.sta_id = mvm_sta->sta_id; | |
659 | cmd.add_modify = STA_MODE_MODIFY; | |
93a42667 EG |
660 | if (start) { |
661 | cmd.add_immediate_ba_tid = (u8) tid; | |
662 | cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
663 | } else { | |
664 | cmd.remove_immediate_ba_tid = (u8) tid; | |
665 | } | |
8ca151b5 JB |
666 | cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : |
667 | STA_MODIFY_REMOVE_BA_TID; | |
668 | ||
669 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
670 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
671 | &cmd, &status); | |
8ca151b5 JB |
672 | if (ret) |
673 | return ret; | |
674 | ||
675 | switch (status) { | |
676 | case ADD_STA_SUCCESS: | |
677 | IWL_DEBUG_INFO(mvm, "RX BA Session %sed in fw\n", | |
678 | start ? "start" : "stopp"); | |
679 | break; | |
680 | case ADD_STA_IMMEDIATE_BA_FAILURE: | |
681 | IWL_WARN(mvm, "RX BA Session refused by fw\n"); | |
682 | ret = -ENOSPC; | |
683 | break; | |
684 | default: | |
685 | ret = -EIO; | |
686 | IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", | |
687 | start ? "start" : "stopp", status); | |
688 | break; | |
689 | } | |
690 | ||
113a0447 EG |
691 | if (!ret) { |
692 | if (start) | |
693 | mvm->rx_ba_sessions++; | |
694 | else if (mvm->rx_ba_sessions > 0) | |
695 | /* check that restart flow didn't zero the counter */ | |
696 | mvm->rx_ba_sessions--; | |
697 | } | |
698 | ||
8ca151b5 JB |
699 | return ret; |
700 | } | |
701 | ||
702 | static int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, | |
703 | int tid, u8 queue, bool start) | |
704 | { | |
705 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
f9dc0004 | 706 | struct iwl_mvm_add_sta_cmd cmd = {}; |
8ca151b5 JB |
707 | int ret; |
708 | u32 status; | |
709 | ||
710 | lockdep_assert_held(&mvm->mutex); | |
711 | ||
712 | if (start) { | |
713 | mvm_sta->tfd_queue_msk |= BIT(queue); | |
714 | mvm_sta->tid_disable_agg &= ~BIT(tid); | |
715 | } else { | |
716 | mvm_sta->tfd_queue_msk &= ~BIT(queue); | |
717 | mvm_sta->tid_disable_agg |= BIT(tid); | |
718 | } | |
719 | ||
720 | cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); | |
721 | cmd.sta_id = mvm_sta->sta_id; | |
722 | cmd.add_modify = STA_MODE_MODIFY; | |
723 | cmd.modify_mask = STA_MODIFY_QUEUES | STA_MODIFY_TID_DISABLE_TX; | |
724 | cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); | |
725 | cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); | |
726 | ||
727 | status = ADD_STA_SUCCESS; | |
f9dc0004 EG |
728 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, sizeof(cmd), |
729 | &cmd, &status); | |
8ca151b5 JB |
730 | if (ret) |
731 | return ret; | |
732 | ||
733 | switch (status) { | |
734 | case ADD_STA_SUCCESS: | |
735 | break; | |
736 | default: | |
737 | ret = -EIO; | |
738 | IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", | |
739 | start ? "start" : "stopp", status); | |
740 | break; | |
741 | } | |
742 | ||
743 | return ret; | |
744 | } | |
745 | ||
b797e3fb | 746 | const u8 tid_to_mac80211_ac[] = { |
8ca151b5 JB |
747 | IEEE80211_AC_BE, |
748 | IEEE80211_AC_BK, | |
749 | IEEE80211_AC_BK, | |
750 | IEEE80211_AC_BE, | |
751 | IEEE80211_AC_VI, | |
752 | IEEE80211_AC_VI, | |
753 | IEEE80211_AC_VO, | |
754 | IEEE80211_AC_VO, | |
755 | }; | |
756 | ||
3e56eadf JB |
757 | static const u8 tid_to_ucode_ac[] = { |
758 | AC_BE, | |
759 | AC_BK, | |
760 | AC_BK, | |
761 | AC_BE, | |
762 | AC_VI, | |
763 | AC_VI, | |
764 | AC_VO, | |
765 | AC_VO, | |
766 | }; | |
767 | ||
8ca151b5 JB |
768 | int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
769 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) | |
770 | { | |
5b577a90 | 771 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
772 | struct iwl_mvm_tid_data *tid_data; |
773 | int txq_id; | |
774 | ||
775 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
776 | return -EINVAL; | |
777 | ||
778 | if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) { | |
779 | IWL_ERR(mvm, "Start AGG when state is not IWL_AGG_OFF %d!\n", | |
780 | mvmsta->tid_data[tid].state); | |
781 | return -ENXIO; | |
782 | } | |
783 | ||
784 | lockdep_assert_held(&mvm->mutex); | |
785 | ||
19e737c9 EL |
786 | for (txq_id = mvm->first_agg_queue; |
787 | txq_id <= mvm->last_agg_queue; txq_id++) | |
8ca151b5 JB |
788 | if (mvm->queue_to_mac80211[txq_id] == |
789 | IWL_INVALID_MAC80211_QUEUE) | |
790 | break; | |
791 | ||
19e737c9 | 792 | if (txq_id > mvm->last_agg_queue) { |
8ca151b5 JB |
793 | IWL_ERR(mvm, "Failed to allocate agg queue\n"); |
794 | return -EIO; | |
795 | } | |
796 | ||
b2492501 AN |
797 | spin_lock_bh(&mvmsta->lock); |
798 | ||
799 | /* possible race condition - we entered D0i3 while starting agg */ | |
800 | if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { | |
801 | spin_unlock_bh(&mvmsta->lock); | |
802 | IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); | |
803 | return -EIO; | |
804 | } | |
805 | ||
8ca151b5 | 806 | /* the new tx queue is still connected to the same mac80211 queue */ |
3e56eadf | 807 | mvm->queue_to_mac80211[txq_id] = vif->hw_queue[tid_to_mac80211_ac[tid]]; |
8ca151b5 | 808 | |
8ca151b5 | 809 | tid_data = &mvmsta->tid_data[tid]; |
9a886586 | 810 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
811 | tid_data->txq_id = txq_id; |
812 | *ssn = tid_data->ssn; | |
813 | ||
814 | IWL_DEBUG_TX_QUEUES(mvm, | |
815 | "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", | |
816 | mvmsta->sta_id, tid, txq_id, tid_data->ssn, | |
817 | tid_data->next_reclaimed); | |
818 | ||
819 | if (tid_data->ssn == tid_data->next_reclaimed) { | |
820 | tid_data->state = IWL_AGG_STARTING; | |
821 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
822 | } else { | |
823 | tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
824 | } | |
825 | ||
826 | spin_unlock_bh(&mvmsta->lock); | |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
831 | int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
832 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
833 | { | |
5b577a90 | 834 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
835 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
836 | int queue, fifo, ret; | |
837 | u16 ssn; | |
838 | ||
839 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); | |
840 | ||
841 | spin_lock_bh(&mvmsta->lock); | |
842 | ssn = tid_data->ssn; | |
843 | queue = tid_data->txq_id; | |
844 | tid_data->state = IWL_AGG_ON; | |
845 | tid_data->ssn = 0xffff; | |
846 | spin_unlock_bh(&mvmsta->lock); | |
847 | ||
3e56eadf | 848 | fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; |
8ca151b5 JB |
849 | |
850 | ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); | |
851 | if (ret) | |
852 | return -EIO; | |
853 | ||
854 | iwl_trans_txq_enable(mvm->trans, queue, fifo, mvmsta->sta_id, tid, | |
855 | buf_size, ssn); | |
856 | ||
857 | /* | |
858 | * Even though in theory the peer could have different | |
859 | * aggregation reorder buffer sizes for different sessions, | |
860 | * our ucode doesn't allow for that and has a global limit | |
861 | * for each station. Therefore, use the minimum of all the | |
862 | * aggregation sessions and our default value. | |
863 | */ | |
864 | mvmsta->max_agg_bufsize = | |
865 | min(mvmsta->max_agg_bufsize, buf_size); | |
866 | mvmsta->lq_sta.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; | |
867 | ||
9ee718aa EL |
868 | IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", |
869 | sta->addr, tid); | |
870 | ||
9e680946 | 871 | return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.lq, false); |
8ca151b5 JB |
872 | } |
873 | ||
874 | int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
875 | struct ieee80211_sta *sta, u16 tid) | |
876 | { | |
5b577a90 | 877 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
878 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
879 | u16 txq_id; | |
880 | int err; | |
881 | ||
f9aa8dd3 EG |
882 | |
883 | /* | |
884 | * If mac80211 is cleaning its state, then say that we finished since | |
885 | * our state has been cleared anyway. | |
886 | */ | |
887 | if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
888 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
889 | return 0; | |
890 | } | |
891 | ||
8ca151b5 JB |
892 | spin_lock_bh(&mvmsta->lock); |
893 | ||
894 | txq_id = tid_data->txq_id; | |
895 | ||
896 | IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", | |
897 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
898 | ||
899 | switch (tid_data->state) { | |
900 | case IWL_AGG_ON: | |
9a886586 | 901 | tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
8ca151b5 JB |
902 | |
903 | IWL_DEBUG_TX_QUEUES(mvm, | |
904 | "ssn = %d, next_recl = %d\n", | |
905 | tid_data->ssn, tid_data->next_reclaimed); | |
906 | ||
907 | /* There are still packets for this RA / TID in the HW */ | |
908 | if (tid_data->ssn != tid_data->next_reclaimed) { | |
909 | tid_data->state = IWL_EMPTYING_HW_QUEUE_DELBA; | |
910 | err = 0; | |
911 | break; | |
912 | } | |
913 | ||
914 | tid_data->ssn = 0xffff; | |
d4578ea8 | 915 | iwl_trans_txq_disable(mvm->trans, txq_id, true); |
8ca151b5 JB |
916 | /* fall through */ |
917 | case IWL_AGG_STARTING: | |
918 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
919 | /* | |
920 | * The agg session has been stopped before it was set up. This | |
921 | * can happen when the AddBA timer times out for example. | |
922 | */ | |
923 | ||
924 | /* No barriers since we are under mutex */ | |
925 | lockdep_assert_held(&mvm->mutex); | |
926 | mvm->queue_to_mac80211[txq_id] = IWL_INVALID_MAC80211_QUEUE; | |
927 | ||
928 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
929 | tid_data->state = IWL_AGG_OFF; | |
930 | err = 0; | |
931 | break; | |
932 | default: | |
933 | IWL_ERR(mvm, | |
934 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
935 | mvmsta->sta_id, tid, tid_data->state); | |
936 | IWL_ERR(mvm, | |
937 | "\ttid_data->txq_id = %d\n", tid_data->txq_id); | |
938 | err = -EINVAL; | |
939 | } | |
940 | ||
941 | spin_unlock_bh(&mvmsta->lock); | |
942 | ||
943 | return err; | |
944 | } | |
945 | ||
e3d9e7ce EG |
946 | int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
947 | struct ieee80211_sta *sta, u16 tid) | |
948 | { | |
5b577a90 | 949 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
e3d9e7ce EG |
950 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
951 | u16 txq_id; | |
b6658ff8 | 952 | enum iwl_mvm_agg_state old_state; |
e3d9e7ce EG |
953 | |
954 | /* | |
955 | * First set the agg state to OFF to avoid calling | |
956 | * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. | |
957 | */ | |
958 | spin_lock_bh(&mvmsta->lock); | |
959 | txq_id = tid_data->txq_id; | |
960 | IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", | |
961 | mvmsta->sta_id, tid, txq_id, tid_data->state); | |
b6658ff8 | 962 | old_state = tid_data->state; |
e3d9e7ce EG |
963 | tid_data->state = IWL_AGG_OFF; |
964 | spin_unlock_bh(&mvmsta->lock); | |
965 | ||
b6658ff8 JB |
966 | if (old_state >= IWL_AGG_ON) { |
967 | if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), true)) | |
968 | IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); | |
969 | ||
d4578ea8 | 970 | iwl_trans_txq_disable(mvm->trans, tid_data->txq_id, true); |
b6658ff8 | 971 | } |
e3d9e7ce | 972 | |
e3d9e7ce EG |
973 | mvm->queue_to_mac80211[tid_data->txq_id] = |
974 | IWL_INVALID_MAC80211_QUEUE; | |
975 | ||
976 | return 0; | |
977 | } | |
978 | ||
8ca151b5 JB |
979 | static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) |
980 | { | |
981 | int i; | |
982 | ||
983 | lockdep_assert_held(&mvm->mutex); | |
984 | ||
985 | i = find_first_zero_bit(mvm->fw_key_table, STA_KEY_MAX_NUM); | |
986 | ||
987 | if (i == STA_KEY_MAX_NUM) | |
988 | return STA_KEY_IDX_INVALID; | |
989 | ||
990 | __set_bit(i, mvm->fw_key_table); | |
991 | ||
992 | return i; | |
993 | } | |
994 | ||
995 | static u8 iwl_mvm_get_key_sta_id(struct ieee80211_vif *vif, | |
996 | struct ieee80211_sta *sta) | |
997 | { | |
998 | struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv; | |
999 | ||
1000 | if (sta) { | |
1001 | struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv; | |
1002 | ||
1003 | return mvm_sta->sta_id; | |
1004 | } | |
1005 | ||
1006 | /* | |
1007 | * The device expects GTKs for station interfaces to be | |
1008 | * installed as GTKs for the AP station. If we have no | |
1009 | * station ID, then use AP's station ID. | |
1010 | */ | |
1011 | if (vif->type == NL80211_IFTYPE_STATION && | |
1012 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) | |
1013 | return mvmvif->ap_sta_id; | |
1014 | ||
881acd89 | 1015 | return IWL_MVM_STATION_COUNT; |
8ca151b5 JB |
1016 | } |
1017 | ||
1018 | static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, | |
1019 | struct iwl_mvm_sta *mvm_sta, | |
1020 | struct ieee80211_key_conf *keyconf, | |
1021 | u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, | |
1022 | u32 cmd_flags) | |
1023 | { | |
5a258aae | 1024 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
f9dc0004 | 1025 | __le16 key_flags; |
8ca151b5 JB |
1026 | int ret, status; |
1027 | u16 keyidx; | |
1028 | int i; | |
1029 | ||
1030 | keyidx = (keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & | |
1031 | STA_KEY_FLG_KEYID_MSK; | |
1032 | key_flags = cpu_to_le16(keyidx); | |
1033 | key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); | |
1034 | ||
1035 | switch (keyconf->cipher) { | |
1036 | case WLAN_CIPHER_SUITE_TKIP: | |
1037 | key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); | |
5a258aae | 1038 | cmd.tkip_rx_tsc_byte2 = tkip_iv32; |
8ca151b5 | 1039 | for (i = 0; i < 5; i++) |
5a258aae MS |
1040 | cmd.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); |
1041 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1042 | break; |
1043 | case WLAN_CIPHER_SUITE_CCMP: | |
1044 | key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); | |
5a258aae | 1045 | memcpy(cmd.key, keyconf->key, keyconf->keylen); |
8ca151b5 JB |
1046 | break; |
1047 | default: | |
e36e5433 MS |
1048 | key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); |
1049 | memcpy(cmd.key, keyconf->key, keyconf->keylen); | |
8ca151b5 JB |
1050 | } |
1051 | ||
1052 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) | |
1053 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); | |
1054 | ||
5a258aae MS |
1055 | cmd.key_offset = keyconf->hw_key_idx; |
1056 | cmd.key_flags = key_flags; | |
8ca151b5 JB |
1057 | cmd.sta_id = sta_id; |
1058 | ||
1059 | status = ADD_STA_SUCCESS; | |
a1022927 | 1060 | if (cmd_flags & CMD_ASYNC) |
f9dc0004 EG |
1061 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, |
1062 | sizeof(cmd), &cmd); | |
a1022927 EG |
1063 | else |
1064 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), | |
1065 | &cmd, &status); | |
8ca151b5 JB |
1066 | |
1067 | switch (status) { | |
1068 | case ADD_STA_SUCCESS: | |
1069 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); | |
1070 | break; | |
1071 | default: | |
1072 | ret = -EIO; | |
1073 | IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); | |
1074 | break; | |
1075 | } | |
1076 | ||
1077 | return ret; | |
1078 | } | |
1079 | ||
1080 | static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, | |
1081 | struct ieee80211_key_conf *keyconf, | |
1082 | u8 sta_id, bool remove_key) | |
1083 | { | |
1084 | struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; | |
1085 | ||
1086 | /* verify the key details match the required command's expectations */ | |
1087 | if (WARN_ON((keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC) || | |
1088 | (keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || | |
1089 | (keyconf->keyidx != 4 && keyconf->keyidx != 5))) | |
1090 | return -EINVAL; | |
1091 | ||
1092 | igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); | |
1093 | igtk_cmd.sta_id = cpu_to_le32(sta_id); | |
1094 | ||
1095 | if (remove_key) { | |
1096 | igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); | |
1097 | } else { | |
1098 | struct ieee80211_key_seq seq; | |
1099 | const u8 *pn; | |
1100 | ||
1101 | memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen); | |
1102 | ieee80211_aes_cmac_calculate_k1_k2(keyconf, | |
1103 | igtk_cmd.K1, igtk_cmd.K2); | |
1104 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1105 | pn = seq.aes_cmac.pn; | |
1106 | igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | | |
1107 | ((u64) pn[4] << 8) | | |
1108 | ((u64) pn[3] << 16) | | |
1109 | ((u64) pn[2] << 24) | | |
1110 | ((u64) pn[1] << 32) | | |
1111 | ((u64) pn[0] << 40)); | |
1112 | } | |
1113 | ||
1114 | IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", | |
1115 | remove_key ? "removing" : "installing", | |
1116 | igtk_cmd.sta_id); | |
1117 | ||
a1022927 | 1118 | return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, |
8ca151b5 JB |
1119 | sizeof(igtk_cmd), &igtk_cmd); |
1120 | } | |
1121 | ||
1122 | ||
1123 | static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, | |
1124 | struct ieee80211_vif *vif, | |
1125 | struct ieee80211_sta *sta) | |
1126 | { | |
1127 | struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv; | |
1128 | ||
1129 | if (sta) | |
1130 | return sta->addr; | |
1131 | ||
1132 | if (vif->type == NL80211_IFTYPE_STATION && | |
1133 | mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1134 | u8 sta_id = mvmvif->ap_sta_id; | |
1135 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1136 | lockdep_is_held(&mvm->mutex)); | |
1137 | return sta->addr; | |
1138 | } | |
1139 | ||
1140 | ||
1141 | return NULL; | |
1142 | } | |
1143 | ||
1144 | int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, | |
1145 | struct ieee80211_vif *vif, | |
1146 | struct ieee80211_sta *sta, | |
1147 | struct ieee80211_key_conf *keyconf, | |
1148 | bool have_key_offset) | |
1149 | { | |
1150 | struct iwl_mvm_sta *mvm_sta; | |
1151 | int ret; | |
1152 | u8 *addr, sta_id; | |
1153 | struct ieee80211_key_seq seq; | |
1154 | u16 p1k[5]; | |
1155 | ||
1156 | lockdep_assert_held(&mvm->mutex); | |
1157 | ||
1158 | /* Get the station id from the mvm local station table */ | |
1159 | sta_id = iwl_mvm_get_key_sta_id(vif, sta); | |
881acd89 | 1160 | if (sta_id == IWL_MVM_STATION_COUNT) { |
8ca151b5 JB |
1161 | IWL_ERR(mvm, "Failed to find station id\n"); |
1162 | return -EINVAL; | |
1163 | } | |
1164 | ||
1165 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) { | |
1166 | ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); | |
1167 | goto end; | |
1168 | } | |
1169 | ||
1170 | /* | |
1171 | * It is possible that the 'sta' parameter is NULL, and thus | |
1172 | * there is a need to retrieve the sta from the local station table. | |
1173 | */ | |
1174 | if (!sta) { | |
1175 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1176 | lockdep_is_held(&mvm->mutex)); | |
1177 | if (IS_ERR_OR_NULL(sta)) { | |
1178 | IWL_ERR(mvm, "Invalid station id\n"); | |
1179 | return -EINVAL; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv; | |
1184 | if (WARN_ON_ONCE(mvm_sta->vif != vif)) | |
1185 | return -EINVAL; | |
1186 | ||
1187 | if (!have_key_offset) { | |
1188 | /* | |
1189 | * The D3 firmware hardcodes the PTK offset to 0, so we have to | |
1190 | * configure it there. As a result, this workaround exists to | |
1191 | * let the caller set the key offset (hw_key_idx), see d3.c. | |
1192 | */ | |
1193 | keyconf->hw_key_idx = iwl_mvm_set_fw_key_idx(mvm); | |
1194 | if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) | |
1195 | return -ENOSPC; | |
1196 | } | |
1197 | ||
1198 | switch (keyconf->cipher) { | |
1199 | case WLAN_CIPHER_SUITE_TKIP: | |
1200 | addr = iwl_mvm_get_mac_addr(mvm, vif, sta); | |
1201 | /* get phase 1 key from mac80211 */ | |
1202 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1203 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
1204 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id, | |
a1022927 | 1205 | seq.tkip.iv32, p1k, 0); |
8ca151b5 JB |
1206 | break; |
1207 | case WLAN_CIPHER_SUITE_CCMP: | |
1208 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id, | |
a1022927 | 1209 | 0, NULL, 0); |
8ca151b5 JB |
1210 | break; |
1211 | default: | |
e36e5433 | 1212 | ret = iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, |
a1022927 | 1213 | sta_id, 0, NULL, 0); |
8ca151b5 JB |
1214 | } |
1215 | ||
1216 | if (ret) | |
1217 | __clear_bit(keyconf->hw_key_idx, mvm->fw_key_table); | |
1218 | ||
1219 | end: | |
1220 | IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
1221 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, | |
1222 | sta->addr, ret); | |
1223 | return ret; | |
1224 | } | |
1225 | ||
1226 | int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, | |
1227 | struct ieee80211_vif *vif, | |
1228 | struct ieee80211_sta *sta, | |
1229 | struct ieee80211_key_conf *keyconf) | |
1230 | { | |
1231 | struct iwl_mvm_sta *mvm_sta; | |
5a258aae | 1232 | struct iwl_mvm_add_sta_key_cmd cmd = {}; |
8ca151b5 JB |
1233 | __le16 key_flags; |
1234 | int ret, status; | |
1235 | u8 sta_id; | |
1236 | ||
1237 | lockdep_assert_held(&mvm->mutex); | |
1238 | ||
1239 | /* Get the station id from the mvm local station table */ | |
1240 | sta_id = iwl_mvm_get_key_sta_id(vif, sta); | |
1241 | ||
1242 | IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", | |
1243 | keyconf->keyidx, sta_id); | |
1244 | ||
1245 | if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC) | |
1246 | return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); | |
1247 | ||
1248 | ret = __test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table); | |
1249 | if (!ret) { | |
1250 | IWL_ERR(mvm, "offset %d not used in fw key table.\n", | |
1251 | keyconf->hw_key_idx); | |
1252 | return -ENOENT; | |
1253 | } | |
1254 | ||
881acd89 | 1255 | if (sta_id == IWL_MVM_STATION_COUNT) { |
8ca151b5 JB |
1256 | IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); |
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | /* | |
1261 | * It is possible that the 'sta' parameter is NULL, and thus | |
1262 | * there is a need to retrieve the sta from the local station table, | |
1263 | * for example when a GTK is removed (where the sta_id will then be | |
1264 | * the AP ID, and no station was passed by mac80211.) | |
1265 | */ | |
1266 | if (!sta) { | |
1267 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], | |
1268 | lockdep_is_held(&mvm->mutex)); | |
1269 | if (!sta) { | |
1270 | IWL_ERR(mvm, "Invalid station id\n"); | |
1271 | return -EINVAL; | |
1272 | } | |
1273 | } | |
1274 | ||
1275 | mvm_sta = (struct iwl_mvm_sta *)sta->drv_priv; | |
1276 | if (WARN_ON_ONCE(mvm_sta->vif != vif)) | |
1277 | return -EINVAL; | |
1278 | ||
8115efbd EG |
1279 | key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & |
1280 | STA_KEY_FLG_KEYID_MSK); | |
8ca151b5 JB |
1281 | key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); |
1282 | key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); | |
1283 | ||
1284 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) | |
1285 | key_flags |= cpu_to_le16(STA_KEY_MULTICAST); | |
1286 | ||
5a258aae MS |
1287 | cmd.key_flags = key_flags; |
1288 | cmd.key_offset = keyconf->hw_key_idx; | |
8ca151b5 JB |
1289 | cmd.sta_id = sta_id; |
1290 | ||
8ca151b5 | 1291 | status = ADD_STA_SUCCESS; |
f9dc0004 EG |
1292 | ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, sizeof(cmd), |
1293 | &cmd, &status); | |
8ca151b5 JB |
1294 | |
1295 | switch (status) { | |
1296 | case ADD_STA_SUCCESS: | |
1297 | IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); | |
1298 | break; | |
1299 | default: | |
1300 | ret = -EIO; | |
1301 | IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); | |
1302 | break; | |
1303 | } | |
1304 | ||
1305 | return ret; | |
1306 | } | |
1307 | ||
1308 | void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, | |
1309 | struct ieee80211_vif *vif, | |
1310 | struct ieee80211_key_conf *keyconf, | |
1311 | struct ieee80211_sta *sta, u32 iv32, | |
1312 | u16 *phase1key) | |
1313 | { | |
c3eb536a | 1314 | struct iwl_mvm_sta *mvm_sta; |
8ca151b5 JB |
1315 | u8 sta_id = iwl_mvm_get_key_sta_id(vif, sta); |
1316 | ||
881acd89 | 1317 | if (WARN_ON_ONCE(sta_id == IWL_MVM_STATION_COUNT)) |
8ca151b5 JB |
1318 | return; |
1319 | ||
c3eb536a BL |
1320 | rcu_read_lock(); |
1321 | ||
1322 | if (!sta) { | |
1323 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1324 | if (WARN_ON(IS_ERR_OR_NULL(sta))) { | |
1325 | rcu_read_unlock(); | |
1326 | return; | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | mvm_sta = (void *)sta->drv_priv; | |
8ca151b5 JB |
1331 | iwl_mvm_send_sta_key(mvm, mvm_sta, keyconf, sta_id, |
1332 | iv32, phase1key, CMD_ASYNC); | |
c3eb536a | 1333 | rcu_read_unlock(); |
8ca151b5 JB |
1334 | } |
1335 | ||
9cc40712 JB |
1336 | void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, |
1337 | struct ieee80211_sta *sta) | |
8ca151b5 | 1338 | { |
5b577a90 | 1339 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1340 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1341 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1342 | .sta_id = mvmsta->sta_id, |
5af01772 | 1343 | .station_flags_msk = cpu_to_le32(STA_FLG_PS), |
9cc40712 | 1344 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 JB |
1345 | }; |
1346 | int ret; | |
1347 | ||
f9dc0004 | 1348 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
8ca151b5 JB |
1349 | if (ret) |
1350 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1351 | } | |
1352 | ||
9cc40712 JB |
1353 | void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, |
1354 | struct ieee80211_sta *sta, | |
8ca151b5 | 1355 | enum ieee80211_frame_release_type reason, |
3e56eadf JB |
1356 | u16 cnt, u16 tids, bool more_data, |
1357 | bool agg) | |
8ca151b5 | 1358 | { |
5b577a90 | 1359 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
f9dc0004 | 1360 | struct iwl_mvm_add_sta_cmd cmd = { |
8ca151b5 | 1361 | .add_modify = STA_MODE_MODIFY, |
9cc40712 | 1362 | .sta_id = mvmsta->sta_id, |
8ca151b5 JB |
1363 | .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, |
1364 | .sleep_tx_count = cpu_to_le16(cnt), | |
9cc40712 | 1365 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), |
8ca151b5 | 1366 | }; |
3e56eadf JB |
1367 | int tid, ret; |
1368 | unsigned long _tids = tids; | |
1369 | ||
1370 | /* convert TIDs to ACs - we don't support TSPEC so that's OK | |
1371 | * Note that this field is reserved and unused by firmware not | |
1372 | * supporting GO uAPSD, so it's safe to always do this. | |
1373 | */ | |
1374 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) | |
1375 | cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); | |
1376 | ||
1377 | /* If we're releasing frames from aggregation queues then check if the | |
1378 | * all queues combined that we're releasing frames from have | |
1379 | * - more frames than the service period, in which case more_data | |
1380 | * needs to be set | |
1381 | * - fewer than 'cnt' frames, in which case we need to adjust the | |
1382 | * firmware command (but do that unconditionally) | |
1383 | */ | |
1384 | if (agg) { | |
1385 | int remaining = cnt; | |
1386 | ||
1387 | spin_lock_bh(&mvmsta->lock); | |
1388 | for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { | |
1389 | struct iwl_mvm_tid_data *tid_data; | |
1390 | u16 n_queued; | |
1391 | ||
1392 | tid_data = &mvmsta->tid_data[tid]; | |
1393 | if (WARN(tid_data->state != IWL_AGG_ON && | |
1394 | tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA, | |
1395 | "TID %d state is %d\n", | |
1396 | tid, tid_data->state)) { | |
1397 | spin_unlock_bh(&mvmsta->lock); | |
1398 | ieee80211_sta_eosp(sta); | |
1399 | return; | |
1400 | } | |
1401 | ||
1402 | n_queued = iwl_mvm_tid_queued(tid_data); | |
1403 | if (n_queued > remaining) { | |
1404 | more_data = true; | |
1405 | remaining = 0; | |
1406 | break; | |
1407 | } | |
1408 | remaining -= n_queued; | |
1409 | } | |
1410 | spin_unlock_bh(&mvmsta->lock); | |
1411 | ||
1412 | cmd.sleep_tx_count = cpu_to_le16(cnt - remaining); | |
1413 | if (WARN_ON(cnt - remaining == 0)) { | |
1414 | ieee80211_sta_eosp(sta); | |
1415 | return; | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | /* Note: this is ignored by firmware not supporting GO uAPSD */ | |
1420 | if (more_data) | |
1421 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_MOREDATA); | |
1422 | ||
1423 | if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { | |
1424 | mvmsta->next_status_eosp = true; | |
1425 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_PS_POLL); | |
1426 | } else { | |
1427 | cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); | |
1428 | } | |
8ca151b5 | 1429 | |
f9dc0004 | 1430 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); |
8ca151b5 JB |
1431 | if (ret) |
1432 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1433 | } | |
3e56eadf JB |
1434 | |
1435 | int iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, | |
1436 | struct iwl_rx_cmd_buffer *rxb, | |
1437 | struct iwl_device_cmd *cmd) | |
1438 | { | |
1439 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1440 | struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; | |
1441 | struct ieee80211_sta *sta; | |
1442 | u32 sta_id = le32_to_cpu(notif->sta_id); | |
1443 | ||
1444 | if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) | |
1445 | return 0; | |
1446 | ||
1447 | rcu_read_lock(); | |
1448 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1449 | if (!IS_ERR_OR_NULL(sta)) | |
1450 | ieee80211_sta_eosp(sta); | |
1451 | rcu_read_unlock(); | |
1452 | ||
1453 | return 0; | |
1454 | } | |
09b0ce1a AO |
1455 | |
1456 | void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, | |
1457 | struct iwl_mvm_sta *mvmsta, bool disable) | |
1458 | { | |
1459 | struct iwl_mvm_add_sta_cmd cmd = { | |
1460 | .add_modify = STA_MODE_MODIFY, | |
1461 | .sta_id = mvmsta->sta_id, | |
1462 | .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, | |
1463 | .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), | |
1464 | .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), | |
1465 | }; | |
1466 | int ret; | |
1467 | ||
1468 | if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_DISABLE_STA_TX)) | |
1469 | return; | |
1470 | ||
1471 | ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); | |
1472 | if (ret) | |
1473 | IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); | |
1474 | } | |
003e5236 AO |
1475 | |
1476 | void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, | |
1477 | struct ieee80211_sta *sta, | |
1478 | bool disable) | |
1479 | { | |
1480 | struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1481 | ||
1482 | spin_lock_bh(&mvm_sta->lock); | |
1483 | ||
1484 | if (mvm_sta->disable_tx == disable) { | |
1485 | spin_unlock_bh(&mvm_sta->lock); | |
1486 | return; | |
1487 | } | |
1488 | ||
1489 | mvm_sta->disable_tx = disable; | |
1490 | ||
1491 | /* | |
1492 | * Tell mac80211 to start/stop queueing tx for this station, | |
1493 | * but don't stop queueing if there are still pending frames | |
1494 | * for this station. | |
1495 | */ | |
1496 | if (disable || !atomic_read(&mvm->pending_frames[mvm_sta->sta_id])) | |
1497 | ieee80211_sta_block_awake(mvm->hw, sta, disable); | |
1498 | ||
1499 | iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); | |
1500 | ||
1501 | spin_unlock_bh(&mvm_sta->lock); | |
1502 | } | |
1503 | ||
1504 | void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, | |
1505 | struct iwl_mvm_vif *mvmvif, | |
1506 | bool disable) | |
1507 | { | |
1508 | struct ieee80211_sta *sta; | |
1509 | struct iwl_mvm_sta *mvm_sta; | |
1510 | int i; | |
1511 | ||
1512 | lockdep_assert_held(&mvm->mutex); | |
1513 | ||
1514 | /* Block/unblock all the stations of the given mvmvif */ | |
1515 | for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { | |
1516 | sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], | |
1517 | lockdep_is_held(&mvm->mutex)); | |
1518 | if (IS_ERR_OR_NULL(sta)) | |
1519 | continue; | |
1520 | ||
1521 | mvm_sta = iwl_mvm_sta_from_mac80211(sta); | |
1522 | if (mvm_sta->mac_id_n_color != | |
1523 | FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) | |
1524 | continue; | |
1525 | ||
1526 | iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); | |
1527 | } | |
1528 | } |