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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 | ||
66 | #include <linux/etherdevice.h> | |
67 | #include <net/mac80211.h> | |
68 | #include "iwl-io.h" | |
69 | #include "iwl-prph.h" | |
70 | #include "fw-api.h" | |
71 | #include "mvm.h" | |
7f0a7c67 | 72 | #include "time-event.h" |
8ca151b5 JB |
73 | |
74 | const u8 iwl_mvm_ac_to_tx_fifo[] = { | |
8ca151b5 | 75 | IWL_MVM_TX_FIFO_VO, |
3dd94794 EG |
76 | IWL_MVM_TX_FIFO_VI, |
77 | IWL_MVM_TX_FIFO_BE, | |
78 | IWL_MVM_TX_FIFO_BK, | |
8ca151b5 JB |
79 | }; |
80 | ||
81 | struct iwl_mvm_mac_iface_iterator_data { | |
82 | struct iwl_mvm *mvm; | |
83 | struct ieee80211_vif *vif; | |
84 | unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; | |
85 | unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; | |
8ca151b5 JB |
86 | enum iwl_tsf_id preferred_tsf; |
87 | bool found_vif; | |
88 | }; | |
89 | ||
a74346d7 AN |
90 | struct iwl_mvm_hw_queues_iface_iterator_data { |
91 | struct ieee80211_vif *exclude_vif; | |
92 | unsigned long used_hw_queues; | |
93 | }; | |
94 | ||
6e97b0d2 IP |
95 | static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, |
96 | struct ieee80211_vif *vif) | |
8ca151b5 JB |
97 | { |
98 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
99 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
2c3e62a1 | 100 | u16 min_bi; |
8ca151b5 | 101 | |
6e97b0d2 IP |
102 | /* Skip the interface for which we are trying to assign a tsf_id */ |
103 | if (vif == data->vif) | |
8ca151b5 | 104 | return; |
8ca151b5 JB |
105 | |
106 | /* | |
107 | * The TSF is a hardware/firmware resource, there are 4 and | |
108 | * the driver should assign and free them as needed. However, | |
109 | * there are cases where 2 MACs should share the same TSF ID | |
110 | * for the purpose of clock sync, an optimization to avoid | |
111 | * clock drift causing overlapping TBTTs/DTIMs for a GO and | |
112 | * client in the system. | |
113 | * | |
114 | * The firmware will decide according to the MAC type which | |
115 | * will be the master and slave. Clients that need to sync | |
116 | * with a remote station will be the master, and an AP or GO | |
117 | * will be the slave. | |
118 | * | |
119 | * Depending on the new interface type it can be slaved to | |
120 | * or become the master of an existing interface. | |
121 | */ | |
122 | switch (data->vif->type) { | |
123 | case NL80211_IFTYPE_STATION: | |
124 | /* | |
2c3e62a1 IP |
125 | * The new interface is a client, so if the one we're iterating |
126 | * is an AP, and the beacon interval of the AP is a multiple or | |
127 | * divisor of the beacon interval of the client, the same TSF | |
128 | * should be used to avoid drift between the new client and | |
129 | * existing AP. The existing AP will get drift updates from the | |
130 | * new client context in this case. | |
8ca151b5 | 131 | */ |
2c3e62a1 IP |
132 | if (vif->type != NL80211_IFTYPE_AP || |
133 | data->preferred_tsf != NUM_TSF_IDS || | |
134 | !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) | |
135 | break; | |
136 | ||
137 | min_bi = min(data->vif->bss_conf.beacon_int, | |
138 | vif->bss_conf.beacon_int); | |
139 | ||
140 | if (!min_bi) | |
141 | break; | |
142 | ||
143 | if ((data->vif->bss_conf.beacon_int - | |
144 | vif->bss_conf.beacon_int) % min_bi == 0) { | |
145 | data->preferred_tsf = mvmvif->tsf_id; | |
146 | return; | |
8ca151b5 JB |
147 | } |
148 | break; | |
2c3e62a1 | 149 | |
8ca151b5 JB |
150 | case NL80211_IFTYPE_AP: |
151 | /* | |
2c3e62a1 IP |
152 | * The new interface is AP/GO, so if its beacon interval is a |
153 | * multiple or a divisor of the beacon interval of an existing | |
154 | * interface, it should get drift updates from an existing | |
155 | * client or use the same TSF as an existing GO. There's no | |
156 | * drift between TSFs internally but if they used different | |
157 | * TSFs then a new client MAC could update one of them and | |
158 | * cause drift that way. | |
8ca151b5 | 159 | */ |
2c3e62a1 IP |
160 | if ((vif->type != NL80211_IFTYPE_AP && |
161 | vif->type != NL80211_IFTYPE_STATION) || | |
162 | data->preferred_tsf != NUM_TSF_IDS || | |
163 | !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) | |
164 | break; | |
165 | ||
166 | min_bi = min(data->vif->bss_conf.beacon_int, | |
167 | vif->bss_conf.beacon_int); | |
168 | ||
169 | if (!min_bi) | |
170 | break; | |
171 | ||
172 | if ((data->vif->bss_conf.beacon_int - | |
173 | vif->bss_conf.beacon_int) % min_bi == 0) { | |
174 | data->preferred_tsf = mvmvif->tsf_id; | |
175 | return; | |
8ca151b5 JB |
176 | } |
177 | break; | |
178 | default: | |
179 | /* | |
180 | * For all other interface types there's no need to | |
181 | * take drift into account. Either they're exclusive | |
182 | * like IBSS and monitor, or we don't care much about | |
183 | * their TSF (like P2P Device), but we won't be able | |
184 | * to share the TSF resource. | |
185 | */ | |
186 | break; | |
187 | } | |
188 | ||
189 | /* | |
190 | * Unless we exited above, we can't share the TSF resource | |
191 | * that the virtual interface we're iterating over is using | |
192 | * with the new one, so clear the available bit and if this | |
193 | * was the preferred one, reset that as well. | |
194 | */ | |
195 | __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); | |
196 | ||
197 | if (data->preferred_tsf == mvmvif->tsf_id) | |
198 | data->preferred_tsf = NUM_TSF_IDS; | |
199 | } | |
200 | ||
110cf810 JB |
201 | /* |
202 | * Get the mask of the queues used by the vif | |
203 | */ | |
d92b732e | 204 | u32 iwl_mvm_mac_get_queues_mask(struct ieee80211_vif *vif) |
110cf810 JB |
205 | { |
206 | u32 qmask = 0, ac; | |
207 | ||
208 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
209 | return BIT(IWL_MVM_OFFCHANNEL_QUEUE); | |
210 | ||
1008e442 IP |
211 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { |
212 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
213 | qmask |= BIT(vif->hw_queue[ac]); | |
214 | } | |
110cf810 JB |
215 | |
216 | if (vif->type == NL80211_IFTYPE_AP) | |
217 | qmask |= BIT(vif->cab_queue); | |
218 | ||
219 | return qmask; | |
220 | } | |
221 | ||
a74346d7 AN |
222 | static void iwl_mvm_iface_hw_queues_iter(void *_data, u8 *mac, |
223 | struct ieee80211_vif *vif) | |
224 | { | |
225 | struct iwl_mvm_hw_queues_iface_iterator_data *data = _data; | |
226 | ||
227 | /* exclude the given vif */ | |
228 | if (vif == data->exclude_vif) | |
229 | return; | |
230 | ||
231 | data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(vif); | |
232 | } | |
233 | ||
234 | static void iwl_mvm_mac_sta_hw_queues_iter(void *_data, | |
235 | struct ieee80211_sta *sta) | |
236 | { | |
237 | struct iwl_mvm_hw_queues_iface_iterator_data *data = _data; | |
238 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
239 | ||
240 | /* Mark the queues used by the sta */ | |
241 | data->used_hw_queues |= mvmsta->tfd_queue_msk; | |
242 | } | |
243 | ||
244 | unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm *mvm, | |
245 | struct ieee80211_vif *exclude_vif) | |
246 | { | |
247 | struct iwl_mvm_hw_queues_iface_iterator_data data = { | |
248 | .exclude_vif = exclude_vif, | |
249 | .used_hw_queues = | |
250 | BIT(IWL_MVM_OFFCHANNEL_QUEUE) | | |
251 | BIT(mvm->aux_queue) | | |
252 | BIT(IWL_MVM_CMD_QUEUE), | |
253 | }; | |
254 | ||
255 | lockdep_assert_held(&mvm->mutex); | |
256 | ||
257 | /* mark all VIF used hw queues */ | |
258 | ieee80211_iterate_active_interfaces_atomic( | |
259 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
260 | iwl_mvm_iface_hw_queues_iter, &data); | |
261 | ||
262 | /* don't assign the same hw queues as TDLS stations */ | |
263 | ieee80211_iterate_stations_atomic(mvm->hw, | |
264 | iwl_mvm_mac_sta_hw_queues_iter, | |
265 | &data); | |
266 | ||
267 | return data.used_hw_queues; | |
268 | } | |
269 | ||
6e97b0d2 IP |
270 | static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, |
271 | struct ieee80211_vif *vif) | |
272 | { | |
273 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
274 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
6e97b0d2 IP |
275 | |
276 | /* Iterator may already find the interface being added -- skip it */ | |
277 | if (vif == data->vif) { | |
278 | data->found_vif = true; | |
279 | return; | |
280 | } | |
281 | ||
6e97b0d2 IP |
282 | /* Mark MAC IDs as used by clearing the available bit, and |
283 | * (below) mark TSFs as used if their existing use is not | |
284 | * compatible with the new interface type. | |
285 | * No locking or atomic bit operations are needed since the | |
286 | * data is on the stack of the caller function. | |
287 | */ | |
288 | __clear_bit(mvmvif->id, data->available_mac_ids); | |
289 | ||
290 | /* find a suitable tsf_id */ | |
291 | iwl_mvm_mac_tsf_id_iter(_data, mac, vif); | |
292 | } | |
293 | ||
6e97b0d2 IP |
294 | void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, |
295 | struct ieee80211_vif *vif) | |
296 | { | |
297 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
298 | struct iwl_mvm_mac_iface_iterator_data data = { | |
299 | .mvm = mvm, | |
300 | .vif = vif, | |
301 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
302 | /* no preference yet */ | |
303 | .preferred_tsf = NUM_TSF_IDS, | |
304 | }; | |
305 | ||
306 | ieee80211_iterate_active_interfaces_atomic( | |
307 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
308 | iwl_mvm_mac_tsf_id_iter, &data); | |
309 | ||
310 | if (data.preferred_tsf != NUM_TSF_IDS) | |
311 | mvmvif->tsf_id = data.preferred_tsf; | |
312 | else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) | |
313 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
314 | NUM_TSF_IDS); | |
315 | } | |
316 | ||
8ca151b5 JB |
317 | static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm, |
318 | struct ieee80211_vif *vif) | |
319 | { | |
320 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
321 | struct iwl_mvm_mac_iface_iterator_data data = { | |
322 | .mvm = mvm, | |
323 | .vif = vif, | |
324 | .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, | |
325 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
326 | /* no preference yet */ | |
327 | .preferred_tsf = NUM_TSF_IDS, | |
8ca151b5 JB |
328 | .found_vif = false, |
329 | }; | |
330 | u32 ac; | |
9ee718aa | 331 | int ret, i; |
110cf810 | 332 | unsigned long used_hw_queues; |
8ca151b5 JB |
333 | |
334 | /* | |
335 | * Allocate a MAC ID and a TSF for this MAC, along with the queues | |
336 | * and other resources. | |
337 | */ | |
338 | ||
339 | /* | |
340 | * Before the iterator, we start with all MAC IDs and TSFs available. | |
341 | * | |
342 | * During iteration, all MAC IDs are cleared that are in use by other | |
343 | * virtual interfaces, and all TSF IDs are cleared that can't be used | |
344 | * by this new virtual interface because they're used by an interface | |
345 | * that can't share it with the new one. | |
346 | * At the same time, we check if there's a preferred TSF in the case | |
347 | * that we should share it with another interface. | |
348 | */ | |
349 | ||
5023d966 JB |
350 | /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ |
351 | switch (vif->type) { | |
352 | case NL80211_IFTYPE_ADHOC: | |
353 | break; | |
354 | case NL80211_IFTYPE_STATION: | |
355 | if (!vif->p2p) | |
356 | break; | |
357 | /* fall through */ | |
358 | default: | |
ec8b6885 | 359 | __clear_bit(0, data.available_mac_ids); |
5023d966 | 360 | } |
ec8b6885 | 361 | |
8ca151b5 JB |
362 | ieee80211_iterate_active_interfaces_atomic( |
363 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
364 | iwl_mvm_mac_iface_iterator, &data); | |
365 | ||
a74346d7 AN |
366 | used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, vif); |
367 | ||
8ca151b5 JB |
368 | /* |
369 | * In the case we're getting here during resume, it's similar to | |
370 | * firmware restart, and with RESUME_ALL the iterator will find | |
371 | * the vif being added already. | |
372 | * We don't want to reassign any IDs in either case since doing | |
373 | * so would probably assign different IDs (as interfaces aren't | |
374 | * necessarily added in the same order), but the old IDs were | |
375 | * preserved anyway, so skip ID assignment for both resume and | |
376 | * recovery. | |
377 | */ | |
378 | if (data.found_vif) | |
379 | return 0; | |
380 | ||
381 | /* Therefore, in recovery, we can't get here */ | |
fd11bd05 IP |
382 | if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
383 | return -EBUSY; | |
8ca151b5 JB |
384 | |
385 | mvmvif->id = find_first_bit(data.available_mac_ids, | |
386 | NUM_MAC_INDEX_DRIVER); | |
387 | if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { | |
388 | IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); | |
389 | ret = -EIO; | |
390 | goto exit_fail; | |
391 | } | |
392 | ||
393 | if (data.preferred_tsf != NUM_TSF_IDS) | |
394 | mvmvif->tsf_id = data.preferred_tsf; | |
395 | else | |
396 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
397 | NUM_TSF_IDS); | |
398 | if (mvmvif->tsf_id == NUM_TSF_IDS) { | |
399 | IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); | |
400 | ret = -EIO; | |
401 | goto exit_fail; | |
402 | } | |
403 | ||
404 | mvmvif->color = 0; | |
405 | ||
1e849c93 IP |
406 | INIT_LIST_HEAD(&mvmvif->time_event_data.list); |
407 | mvmvif->time_event_data.id = TE_MAX; | |
408 | ||
8ca151b5 JB |
409 | /* No need to allocate data queues to P2P Device MAC.*/ |
410 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
411 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
412 | vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | /* Find available queues, and allocate them to the ACs */ | |
418 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
110cf810 | 419 | u8 queue = find_first_zero_bit(&used_hw_queues, |
19e737c9 | 420 | mvm->first_agg_queue); |
8ca151b5 | 421 | |
19e737c9 | 422 | if (queue >= mvm->first_agg_queue) { |
8ca151b5 JB |
423 | IWL_ERR(mvm, "Failed to allocate queue\n"); |
424 | ret = -EIO; | |
425 | goto exit_fail; | |
426 | } | |
427 | ||
110cf810 | 428 | __set_bit(queue, &used_hw_queues); |
8ca151b5 JB |
429 | vif->hw_queue[ac] = queue; |
430 | } | |
431 | ||
432 | /* Allocate the CAB queue for softAP and GO interfaces */ | |
433 | if (vif->type == NL80211_IFTYPE_AP) { | |
110cf810 | 434 | u8 queue = find_first_zero_bit(&used_hw_queues, |
19e737c9 | 435 | mvm->first_agg_queue); |
8ca151b5 | 436 | |
19e737c9 | 437 | if (queue >= mvm->first_agg_queue) { |
8ca151b5 JB |
438 | IWL_ERR(mvm, "Failed to allocate cab queue\n"); |
439 | ret = -EIO; | |
440 | goto exit_fail; | |
441 | } | |
442 | ||
443 | vif->cab_queue = queue; | |
444 | } else { | |
445 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
446 | } | |
447 | ||
448 | mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT; | |
449 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
450 | ||
9ee718aa EL |
451 | for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) |
452 | mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; | |
453 | ||
8ca151b5 JB |
454 | return 0; |
455 | ||
456 | exit_fail: | |
457 | memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); | |
458 | memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue)); | |
459 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
460 | return ret; | |
461 | } | |
462 | ||
463 | int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
464 | { | |
4cf677fd EG |
465 | unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? |
466 | mvm->cfg->base_params->wd_timeout : | |
467 | IWL_WATCHDOG_DISABLED; | |
8ca151b5 JB |
468 | u32 ac; |
469 | int ret; | |
470 | ||
471 | lockdep_assert_held(&mvm->mutex); | |
472 | ||
473 | ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif); | |
474 | if (ret) | |
475 | return ret; | |
476 | ||
477 | switch (vif->type) { | |
478 | case NL80211_IFTYPE_P2P_DEVICE: | |
3edf8ff6 | 479 | iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE, |
4cf677fd | 480 | IWL_MVM_TX_FIFO_VO, wdg_timeout); |
8ca151b5 JB |
481 | break; |
482 | case NL80211_IFTYPE_AP: | |
3edf8ff6 | 483 | iwl_mvm_enable_ac_txq(mvm, vif->cab_queue, |
4cf677fd | 484 | IWL_MVM_TX_FIFO_MCAST, wdg_timeout); |
8ca151b5 JB |
485 | /* fall through */ |
486 | default: | |
487 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
3edf8ff6 | 488 | iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac], |
4cf677fd EG |
489 | iwl_mvm_ac_to_tx_fifo[ac], |
490 | wdg_timeout); | |
8ca151b5 JB |
491 | break; |
492 | } | |
493 | ||
494 | return 0; | |
495 | } | |
496 | ||
497 | void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
498 | { | |
499 | int ac; | |
500 | ||
501 | lockdep_assert_held(&mvm->mutex); | |
502 | ||
503 | switch (vif->type) { | |
504 | case NL80211_IFTYPE_P2P_DEVICE: | |
0294d9ee | 505 | iwl_mvm_disable_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE, 0); |
8ca151b5 JB |
506 | break; |
507 | case NL80211_IFTYPE_AP: | |
0294d9ee | 508 | iwl_mvm_disable_txq(mvm, vif->cab_queue, 0); |
8ca151b5 JB |
509 | /* fall through */ |
510 | default: | |
511 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
0294d9ee | 512 | iwl_mvm_disable_txq(mvm, vif->hw_queue[ac], 0); |
8ca151b5 JB |
513 | } |
514 | } | |
515 | ||
516 | static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, | |
517 | struct ieee80211_vif *vif, | |
518 | enum ieee80211_band band, | |
519 | u8 *cck_rates, u8 *ofdm_rates) | |
520 | { | |
521 | struct ieee80211_supported_band *sband; | |
522 | unsigned long basic = vif->bss_conf.basic_rates; | |
523 | int lowest_present_ofdm = 100; | |
524 | int lowest_present_cck = 100; | |
525 | u8 cck = 0; | |
526 | u8 ofdm = 0; | |
527 | int i; | |
528 | ||
529 | sband = mvm->hw->wiphy->bands[band]; | |
530 | ||
531 | for_each_set_bit(i, &basic, BITS_PER_LONG) { | |
532 | int hw = sband->bitrates[i].hw_value; | |
533 | if (hw >= IWL_FIRST_OFDM_RATE) { | |
534 | ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); | |
535 | if (lowest_present_ofdm > hw) | |
536 | lowest_present_ofdm = hw; | |
537 | } else { | |
538 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
539 | ||
540 | cck |= BIT(hw); | |
541 | if (lowest_present_cck > hw) | |
542 | lowest_present_cck = hw; | |
543 | } | |
544 | } | |
545 | ||
546 | /* | |
547 | * Now we've got the basic rates as bitmaps in the ofdm and cck | |
548 | * variables. This isn't sufficient though, as there might not | |
549 | * be all the right rates in the bitmap. E.g. if the only basic | |
550 | * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps | |
551 | * and 6 Mbps because the 802.11-2007 standard says in 9.6: | |
552 | * | |
553 | * [...] a STA responding to a received frame shall transmit | |
554 | * its Control Response frame [...] at the highest rate in the | |
555 | * BSSBasicRateSet parameter that is less than or equal to the | |
556 | * rate of the immediately previous frame in the frame exchange | |
557 | * sequence ([...]) and that is of the same modulation class | |
558 | * ([...]) as the received frame. If no rate contained in the | |
559 | * BSSBasicRateSet parameter meets these conditions, then the | |
560 | * control frame sent in response to a received frame shall be | |
561 | * transmitted at the highest mandatory rate of the PHY that is | |
562 | * less than or equal to the rate of the received frame, and | |
563 | * that is of the same modulation class as the received frame. | |
564 | * | |
565 | * As a consequence, we need to add all mandatory rates that are | |
566 | * lower than all of the basic rates to these bitmaps. | |
567 | */ | |
568 | ||
569 | if (IWL_RATE_24M_INDEX < lowest_present_ofdm) | |
570 | ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; | |
571 | if (IWL_RATE_12M_INDEX < lowest_present_ofdm) | |
572 | ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; | |
573 | /* 6M already there or needed so always add */ | |
574 | ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; | |
575 | ||
576 | /* | |
577 | * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. | |
578 | * Note, however: | |
579 | * - if no CCK rates are basic, it must be ERP since there must | |
580 | * be some basic rates at all, so they're OFDM => ERP PHY | |
581 | * (or we're in 5 GHz, and the cck bitmap will never be used) | |
582 | * - if 11M is a basic rate, it must be ERP as well, so add 5.5M | |
583 | * - if 5.5M is basic, 1M and 2M are mandatory | |
584 | * - if 2M is basic, 1M is mandatory | |
585 | * - if 1M is basic, that's the only valid ACK rate. | |
586 | * As a consequence, it's not as complicated as it sounds, just add | |
587 | * any lower rates to the ACK rate bitmap. | |
588 | */ | |
589 | if (IWL_RATE_11M_INDEX < lowest_present_cck) | |
590 | cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; | |
591 | if (IWL_RATE_5M_INDEX < lowest_present_cck) | |
592 | cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; | |
593 | if (IWL_RATE_2M_INDEX < lowest_present_cck) | |
594 | cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; | |
595 | /* 1M already there or needed so always add */ | |
596 | cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; | |
597 | ||
598 | *cck_rates = cck; | |
599 | *ofdm_rates = ofdm; | |
600 | } | |
601 | ||
8a5e3660 AA |
602 | static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, |
603 | struct ieee80211_vif *vif, | |
604 | struct iwl_mac_ctx_cmd *cmd) | |
605 | { | |
606 | /* for both sta and ap, ht_operation_mode hold the protection_mode */ | |
607 | u8 protection_mode = vif->bss_conf.ht_operation_mode & | |
608 | IEEE80211_HT_OP_MODE_PROTECTION; | |
609 | /* The fw does not distinguish between ht and fat */ | |
610 | u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; | |
611 | ||
612 | IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); | |
613 | /* | |
614 | * See section 9.23.3.1 of IEEE 80211-2012. | |
615 | * Nongreenfield HT STAs Present is not supported. | |
616 | */ | |
617 | switch (protection_mode) { | |
618 | case IEEE80211_HT_OP_MODE_PROTECTION_NONE: | |
619 | break; | |
620 | case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: | |
621 | case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: | |
622 | cmd->protection_flags |= cpu_to_le32(ht_flag); | |
623 | break; | |
624 | case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: | |
625 | /* Protect when channel wider than 20MHz */ | |
626 | if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) | |
627 | cmd->protection_flags |= cpu_to_le32(ht_flag); | |
628 | break; | |
629 | default: | |
630 | IWL_ERR(mvm, "Illegal protection mode %d\n", | |
631 | protection_mode); | |
632 | break; | |
633 | } | |
634 | } | |
635 | ||
8ca151b5 JB |
636 | static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, |
637 | struct ieee80211_vif *vif, | |
638 | struct iwl_mac_ctx_cmd *cmd, | |
3dfd3a97 | 639 | const u8 *bssid_override, |
8ca151b5 JB |
640 | u32 action) |
641 | { | |
642 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
643 | struct ieee80211_chanctx_conf *chanctx; | |
8a5e3660 AA |
644 | bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & |
645 | IEEE80211_HT_OP_MODE_PROTECTION); | |
8ca151b5 | 646 | u8 cck_ack_rates, ofdm_ack_rates; |
3dfd3a97 | 647 | const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; |
8ca151b5 JB |
648 | int i; |
649 | ||
650 | cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
651 | mvmvif->color)); | |
652 | cmd->action = cpu_to_le32(action); | |
653 | ||
654 | switch (vif->type) { | |
655 | case NL80211_IFTYPE_STATION: | |
656 | if (vif->p2p) | |
657 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); | |
658 | else | |
659 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); | |
660 | break; | |
661 | case NL80211_IFTYPE_AP: | |
662 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); | |
663 | break; | |
664 | case NL80211_IFTYPE_MONITOR: | |
665 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); | |
666 | break; | |
667 | case NL80211_IFTYPE_P2P_DEVICE: | |
668 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); | |
669 | break; | |
670 | case NL80211_IFTYPE_ADHOC: | |
671 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); | |
672 | break; | |
673 | default: | |
674 | WARN_ON_ONCE(1); | |
675 | } | |
676 | ||
677 | cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); | |
678 | ||
679 | memcpy(cmd->node_addr, vif->addr, ETH_ALEN); | |
3dfd3a97 JB |
680 | |
681 | if (bssid) | |
682 | memcpy(cmd->bssid_addr, bssid, ETH_ALEN); | |
8ca151b5 JB |
683 | else |
684 | eth_broadcast_addr(cmd->bssid_addr); | |
685 | ||
686 | rcu_read_lock(); | |
687 | chanctx = rcu_dereference(vif->chanctx_conf); | |
688 | iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band | |
689 | : IEEE80211_BAND_2GHZ, | |
690 | &cck_ack_rates, &ofdm_ack_rates); | |
691 | rcu_read_unlock(); | |
692 | ||
693 | cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); | |
694 | cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); | |
695 | ||
696 | cmd->cck_short_preamble = | |
697 | cpu_to_le32(vif->bss_conf.use_short_preamble ? | |
698 | MAC_FLG_SHORT_PREAMBLE : 0); | |
699 | cmd->short_slot = | |
700 | cpu_to_le32(vif->bss_conf.use_short_slot ? | |
701 | MAC_FLG_SHORT_SLOT : 0); | |
702 | ||
3dd94794 EG |
703 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
704 | u8 txf = iwl_mvm_ac_to_tx_fifo[i]; | |
705 | ||
706 | cmd->ac[txf].cw_min = | |
707 | cpu_to_le16(mvmvif->queue_params[i].cw_min); | |
708 | cmd->ac[txf].cw_max = | |
709 | cpu_to_le16(mvmvif->queue_params[i].cw_max); | |
710 | cmd->ac[txf].edca_txop = | |
8ca151b5 | 711 | cpu_to_le16(mvmvif->queue_params[i].txop * 32); |
3dd94794 EG |
712 | cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs; |
713 | cmd->ac[txf].fifos_mask = BIT(txf); | |
8ca151b5 JB |
714 | } |
715 | ||
86a91ec7 EG |
716 | /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ |
717 | if (vif->type == NL80211_IFTYPE_AP) | |
3dd94794 EG |
718 | cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= |
719 | BIT(IWL_MVM_TX_FIFO_MCAST); | |
86a91ec7 | 720 | |
8ca151b5 JB |
721 | if (vif->bss_conf.qos) |
722 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); | |
723 | ||
dc271ee0 | 724 | if (vif->bss_conf.use_cts_prot) |
cc7ee2ba | 725 | cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); |
dc271ee0 | 726 | |
8a5e3660 AA |
727 | IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", |
728 | vif->bss_conf.use_cts_prot, | |
729 | vif->bss_conf.ht_operation_mode); | |
730 | if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) | |
8ca151b5 | 731 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); |
8a5e3660 AA |
732 | if (ht_enabled) |
733 | iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); | |
8ca151b5 JB |
734 | |
735 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); | |
736 | } | |
737 | ||
738 | static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, | |
739 | struct iwl_mac_ctx_cmd *cmd) | |
740 | { | |
a1022927 | 741 | int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, |
8ca151b5 JB |
742 | sizeof(*cmd), cmd); |
743 | if (ret) | |
744 | IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", | |
745 | le32_to_cpu(cmd->action), ret); | |
746 | return ret; | |
747 | } | |
748 | ||
cf52023c LC |
749 | static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, |
750 | struct ieee80211_vif *vif, | |
3dfd3a97 JB |
751 | u32 action, bool force_assoc_off, |
752 | const u8 *bssid_override) | |
8ca151b5 | 753 | { |
cf52023c LC |
754 | struct iwl_mac_ctx_cmd cmd = {}; |
755 | struct iwl_mac_data_sta *ctxt_sta; | |
756 | ||
757 | WARN_ON(vif->type != NL80211_IFTYPE_STATION); | |
758 | ||
759 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 760 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); |
cf52023c LC |
761 | |
762 | if (vif->p2p) { | |
763 | struct ieee80211_p2p_noa_attr *noa = | |
764 | &vif->bss_conf.p2p_noa_attr; | |
765 | ||
766 | cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & | |
767 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
768 | ctxt_sta = &cmd.p2p_sta.sta; | |
769 | } else { | |
cf52023c LC |
770 | ctxt_sta = &cmd.sta; |
771 | } | |
772 | ||
210a544e | 773 | /* We need the dtim_period to set the MAC as associated */ |
ba283927 AB |
774 | if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && |
775 | !force_assoc_off) { | |
d2931bbd JB |
776 | u32 dtim_offs; |
777 | ||
778 | /* | |
779 | * The DTIM count counts down, so when it is N that means N | |
780 | * more beacon intervals happen until the DTIM TBTT. Therefore | |
781 | * add this to the current time. If that ends up being in the | |
782 | * future, the firmware will handle it. | |
783 | * | |
784 | * Also note that the system_timestamp (which we get here as | |
785 | * "sync_device_ts") and TSF timestamp aren't at exactly the | |
786 | * same offset in the frame -- the TSF is at the first symbol | |
787 | * of the TSF, the system timestamp is at signal acquisition | |
788 | * time. This means there's an offset between them of at most | |
789 | * a few hundred microseconds (24 * 8 bits + PLCP time gives | |
790 | * 384us in the longest case), this is currently not relevant | |
791 | * as the firmware wakes up around 2ms before the TBTT. | |
792 | */ | |
793 | dtim_offs = vif->bss_conf.sync_dtim_count * | |
794 | vif->bss_conf.beacon_int; | |
795 | /* convert TU to usecs */ | |
796 | dtim_offs *= 1024; | |
797 | ||
798 | ctxt_sta->dtim_tsf = | |
799 | cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); | |
800 | ctxt_sta->dtim_time = | |
801 | cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); | |
802 | ||
803 | IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", | |
804 | le64_to_cpu(ctxt_sta->dtim_tsf), | |
805 | le32_to_cpu(ctxt_sta->dtim_time), | |
806 | dtim_offs); | |
807 | ||
210a544e | 808 | ctxt_sta->is_assoc = cpu_to_le32(1); |
d2931bbd | 809 | } else { |
210a544e | 810 | ctxt_sta->is_assoc = cpu_to_le32(0); |
7c8b3bc6 LC |
811 | |
812 | /* Allow beacons to pass through as long as we are not | |
813 | * associated, or we do not have dtim period information. | |
814 | */ | |
815 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); | |
d2931bbd | 816 | } |
8ca151b5 JB |
817 | |
818 | ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
819 | ctxt_sta->bi_reciprocal = | |
820 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
821 | ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
822 | vif->bss_conf.dtim_period); | |
823 | ctxt_sta->dtim_reciprocal = | |
824 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
825 | vif->bss_conf.dtim_period)); | |
826 | ||
827 | ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); | |
828 | ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); | |
8ca151b5 JB |
829 | |
830 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
831 | } | |
832 | ||
833 | static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, | |
834 | struct ieee80211_vif *vif, | |
835 | u32 action) | |
836 | { | |
837 | struct iwl_mac_ctx_cmd cmd = {}; | |
838 | ||
839 | WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); | |
840 | ||
3dfd3a97 | 841 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
53585495 JB |
842 | |
843 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | | |
844 | MAC_FILTER_IN_CONTROL_AND_MGMT | | |
845 | MAC_FILTER_IN_BEACON | | |
fb8b8ee1 JB |
846 | MAC_FILTER_IN_PROBE_REQUEST | |
847 | MAC_FILTER_IN_CRC32); | |
848 | mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS; | |
53585495 | 849 | |
8ca151b5 JB |
850 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); |
851 | } | |
852 | ||
5023d966 JB |
853 | static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, |
854 | struct ieee80211_vif *vif, | |
855 | u32 action) | |
856 | { | |
857 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
858 | struct iwl_mac_ctx_cmd cmd = {}; | |
859 | ||
860 | WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); | |
861 | ||
3dfd3a97 | 862 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
5023d966 JB |
863 | |
864 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | | |
865 | MAC_FILTER_IN_PROBE_REQUEST); | |
866 | ||
867 | /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ | |
868 | cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
869 | cmd.ibss.bi_reciprocal = | |
870 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
871 | ||
872 | /* TODO: Assumes that the beacon id == mac context id */ | |
873 | cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); | |
874 | ||
875 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
876 | } | |
877 | ||
8ca151b5 JB |
878 | struct iwl_mvm_go_iterator_data { |
879 | bool go_active; | |
880 | }; | |
881 | ||
882 | static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) | |
883 | { | |
884 | struct iwl_mvm_go_iterator_data *data = _data; | |
885 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
886 | ||
5023d966 JB |
887 | if (vif->type == NL80211_IFTYPE_AP && vif->p2p && |
888 | mvmvif->ap_ibss_active) | |
8ca151b5 JB |
889 | data->go_active = true; |
890 | } | |
891 | ||
892 | static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, | |
893 | struct ieee80211_vif *vif, | |
894 | u32 action) | |
895 | { | |
896 | struct iwl_mac_ctx_cmd cmd = {}; | |
897 | struct iwl_mvm_go_iterator_data data = {}; | |
898 | ||
899 | WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); | |
900 | ||
3dfd3a97 | 901 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 JB |
902 | |
903 | cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); | |
1dcd15ee IP |
904 | |
905 | /* Override the filter flags to accept only probe requests */ | |
906 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
8ca151b5 JB |
907 | |
908 | /* | |
909 | * This flag should be set to true when the P2P Device is | |
910 | * discoverable and there is at least another active P2P GO. Settings | |
911 | * this flag will allow the P2P Device to be discoverable on other | |
912 | * channels in addition to its listen channel. | |
913 | * Note that this flag should not be set in other cases as it opens the | |
914 | * Rx filters on all MAC and increases the number of interrupts. | |
915 | */ | |
916 | ieee80211_iterate_active_interfaces_atomic( | |
917 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
918 | iwl_mvm_go_iterator, &data); | |
919 | ||
920 | cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); | |
921 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
922 | } | |
923 | ||
924 | static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, | |
925 | struct iwl_mac_beacon_cmd *beacon_cmd, | |
926 | u8 *beacon, u32 frame_size) | |
927 | { | |
928 | u32 tim_idx; | |
929 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; | |
930 | ||
931 | /* The index is relative to frame start but we start looking at the | |
932 | * variable-length part of the beacon. */ | |
933 | tim_idx = mgmt->u.beacon.variable - beacon; | |
934 | ||
935 | /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ | |
936 | while ((tim_idx < (frame_size - 2)) && | |
937 | (beacon[tim_idx] != WLAN_EID_TIM)) | |
938 | tim_idx += beacon[tim_idx+1] + 2; | |
939 | ||
940 | /* If TIM field was found, set variables */ | |
941 | if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { | |
942 | beacon_cmd->tim_idx = cpu_to_le32(tim_idx); | |
943 | beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]); | |
944 | } else { | |
945 | IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); | |
946 | } | |
947 | } | |
948 | ||
949 | static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, | |
950 | struct ieee80211_vif *vif, | |
951 | struct sk_buff *beacon) | |
952 | { | |
953 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
954 | struct iwl_host_cmd cmd = { | |
955 | .id = BEACON_TEMPLATE_CMD, | |
956 | .flags = CMD_ASYNC, | |
957 | }; | |
958 | struct iwl_mac_beacon_cmd beacon_cmd = {}; | |
959 | struct ieee80211_tx_info *info; | |
960 | u32 beacon_skb_len; | |
75f6b9b6 | 961 | u32 rate, tx_flags; |
8ca151b5 JB |
962 | |
963 | if (WARN_ON(!beacon)) | |
964 | return -EINVAL; | |
965 | ||
966 | beacon_skb_len = beacon->len; | |
967 | ||
968 | /* TODO: for now the beacon template id is set to be the mac context id. | |
969 | * Might be better to handle it as another resource ... */ | |
970 | beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); | |
75f6b9b6 | 971 | info = IEEE80211_SKB_CB(beacon); |
8ca151b5 JB |
972 | |
973 | /* Set up TX command fields */ | |
974 | beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len); | |
975 | beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id; | |
976 | beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
75f6b9b6 EG |
977 | tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; |
978 | tx_flags |= | |
979 | iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << | |
980 | TX_CMD_FLG_BT_PRIO_POS; | |
981 | beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags); | |
8ca151b5 JB |
982 | |
983 | mvm->mgmt_last_antenna_idx = | |
a0544272 | 984 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 JB |
985 | mvm->mgmt_last_antenna_idx); |
986 | ||
987 | beacon_cmd.tx.rate_n_flags = | |
988 | cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << | |
989 | RATE_MCS_ANT_POS); | |
990 | ||
8ca151b5 JB |
991 | if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) { |
992 | rate = IWL_FIRST_OFDM_RATE; | |
993 | } else { | |
994 | rate = IWL_FIRST_CCK_RATE; | |
995 | beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); | |
996 | } | |
997 | beacon_cmd.tx.rate_n_flags |= | |
998 | cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); | |
999 | ||
1000 | /* Set up TX beacon command fields */ | |
5023d966 JB |
1001 | if (vif->type == NL80211_IFTYPE_AP) |
1002 | iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd, | |
1003 | beacon->data, | |
1004 | beacon_skb_len); | |
8ca151b5 JB |
1005 | |
1006 | /* Submit command */ | |
1007 | cmd.len[0] = sizeof(beacon_cmd); | |
1008 | cmd.data[0] = &beacon_cmd; | |
1009 | cmd.dataflags[0] = 0; | |
1010 | cmd.len[1] = beacon_skb_len; | |
1011 | cmd.data[1] = beacon->data; | |
1012 | cmd.dataflags[1] = IWL_HCMD_DFL_DUP; | |
1013 | ||
1014 | return iwl_mvm_send_cmd(mvm, &cmd); | |
1015 | } | |
1016 | ||
5023d966 | 1017 | /* The beacon template for the AP/GO/IBSS has changed and needs update */ |
8ca151b5 JB |
1018 | int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, |
1019 | struct ieee80211_vif *vif) | |
1020 | { | |
1021 | struct sk_buff *beacon; | |
1022 | int ret; | |
1023 | ||
5023d966 JB |
1024 | WARN_ON(vif->type != NL80211_IFTYPE_AP && |
1025 | vif->type != NL80211_IFTYPE_ADHOC); | |
8ca151b5 | 1026 | |
fe887665 | 1027 | beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); |
8ca151b5 JB |
1028 | if (!beacon) |
1029 | return -ENOMEM; | |
1030 | ||
1031 | ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); | |
1032 | dev_kfree_skb(beacon); | |
1033 | return ret; | |
1034 | } | |
1035 | ||
3a3cb92e IP |
1036 | struct iwl_mvm_mac_ap_iterator_data { |
1037 | struct iwl_mvm *mvm; | |
1038 | struct ieee80211_vif *vif; | |
1039 | u32 beacon_device_ts; | |
1040 | u16 beacon_int; | |
1041 | }; | |
1042 | ||
1043 | /* Find the beacon_device_ts and beacon_int for a managed interface */ | |
1044 | static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, | |
1045 | struct ieee80211_vif *vif) | |
1046 | { | |
1047 | struct iwl_mvm_mac_ap_iterator_data *data = _data; | |
1048 | ||
1049 | if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) | |
1050 | return; | |
1051 | ||
1052 | /* Station client has higher priority over P2P client*/ | |
1053 | if (vif->p2p && data->beacon_device_ts) | |
1054 | return; | |
1055 | ||
1056 | data->beacon_device_ts = vif->bss_conf.sync_device_ts; | |
1057 | data->beacon_int = vif->bss_conf.beacon_int; | |
1058 | } | |
1059 | ||
8ca151b5 JB |
1060 | /* |
1061 | * Fill the specific data for mac context of type AP of P2P GO | |
1062 | */ | |
1063 | static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, | |
1064 | struct ieee80211_vif *vif, | |
506a81e6 JB |
1065 | struct iwl_mac_data_ap *ctxt_ap, |
1066 | bool add) | |
8ca151b5 JB |
1067 | { |
1068 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3a3cb92e IP |
1069 | struct iwl_mvm_mac_ap_iterator_data data = { |
1070 | .mvm = mvm, | |
1071 | .vif = vif, | |
1072 | .beacon_device_ts = 0 | |
1073 | }; | |
8ca151b5 JB |
1074 | |
1075 | ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
1076 | ctxt_ap->bi_reciprocal = | |
1077 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
1078 | ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
1079 | vif->bss_conf.dtim_period); | |
1080 | ctxt_ap->dtim_reciprocal = | |
1081 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
1082 | vif->bss_conf.dtim_period)); | |
1083 | ||
1084 | ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue); | |
8ca151b5 | 1085 | |
506a81e6 | 1086 | /* |
3a3cb92e | 1087 | * Only set the beacon time when the MAC is being added, when we |
506a81e6 JB |
1088 | * just modify the MAC then we should keep the time -- the firmware |
1089 | * can otherwise have a "jumping" TBTT. | |
1090 | */ | |
3a3cb92e IP |
1091 | if (add) { |
1092 | /* | |
1093 | * If there is a station/P2P client interface which is | |
1094 | * associated, set the AP's TBTT far enough from the station's | |
1095 | * TBTT. Otherwise, set it to the current system time | |
1096 | */ | |
1097 | ieee80211_iterate_active_interfaces_atomic( | |
1098 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
1099 | iwl_mvm_mac_ap_iterator, &data); | |
1100 | ||
1101 | if (data.beacon_device_ts) { | |
9f8f8ca5 | 1102 | u32 rand = (prandom_u32() % (64 - 36)) + 36; |
3a3cb92e IP |
1103 | mvmvif->ap_beacon_time = data.beacon_device_ts + |
1104 | ieee80211_tu_to_usec(data.beacon_int * rand / | |
1105 | 100); | |
1106 | } else { | |
1107 | mvmvif->ap_beacon_time = | |
1108 | iwl_read_prph(mvm->trans, | |
1109 | DEVICE_SYSTEM_TIME_REG); | |
1110 | } | |
1111 | } | |
506a81e6 JB |
1112 | |
1113 | ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); | |
506a81e6 | 1114 | ctxt_ap->beacon_tsf = 0; /* unused */ |
8ca151b5 JB |
1115 | |
1116 | /* TODO: Assume that the beacon id == mac context id */ | |
1117 | ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); | |
1118 | } | |
1119 | ||
1120 | static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, | |
1121 | struct ieee80211_vif *vif, | |
1122 | u32 action) | |
1123 | { | |
1124 | struct iwl_mac_ctx_cmd cmd = {}; | |
1125 | ||
1126 | WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); | |
1127 | ||
1128 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 1129 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 | 1130 | |
46018794 EP |
1131 | /* |
1132 | * pass probe requests and beacons from other APs (needed | |
1133 | * for ht protection) | |
1134 | */ | |
1135 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST | | |
1136 | MAC_FILTER_IN_BEACON); | |
1dcd15ee | 1137 | |
8ca151b5 | 1138 | /* Fill the data specific for ap mode */ |
506a81e6 JB |
1139 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap, |
1140 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 JB |
1141 | |
1142 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1143 | } | |
1144 | ||
1145 | static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, | |
1146 | struct ieee80211_vif *vif, | |
1147 | u32 action) | |
1148 | { | |
1149 | struct iwl_mac_ctx_cmd cmd = {}; | |
67baf663 | 1150 | struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; |
8ca151b5 JB |
1151 | |
1152 | WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); | |
1153 | ||
1154 | /* Fill the common data for all mac context types */ | |
3dfd3a97 | 1155 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); |
8ca151b5 | 1156 | |
46018794 EP |
1157 | /* |
1158 | * pass probe requests and beacons from other APs (needed | |
1159 | * for ht protection) | |
1160 | */ | |
1161 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST | | |
1162 | MAC_FILTER_IN_BEACON); | |
1163 | ||
8ca151b5 | 1164 | /* Fill the data specific for GO mode */ |
506a81e6 JB |
1165 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap, |
1166 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 | 1167 | |
67baf663 JD |
1168 | cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & |
1169 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
1170 | cmd.go.opp_ps_enabled = | |
1171 | cpu_to_le32(!!(noa->oppps_ctwindow & | |
1172 | IEEE80211_P2P_OPPPS_ENABLE_BIT)); | |
8ca151b5 JB |
1173 | |
1174 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1175 | } | |
1176 | ||
1177 | static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
3dfd3a97 JB |
1178 | u32 action, bool force_assoc_off, |
1179 | const u8 *bssid_override) | |
8ca151b5 JB |
1180 | { |
1181 | switch (vif->type) { | |
1182 | case NL80211_IFTYPE_STATION: | |
cf52023c | 1183 | return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, |
3dfd3a97 JB |
1184 | force_assoc_off, |
1185 | bssid_override); | |
8ca151b5 JB |
1186 | break; |
1187 | case NL80211_IFTYPE_AP: | |
1188 | if (!vif->p2p) | |
1189 | return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); | |
1190 | else | |
1191 | return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); | |
1192 | break; | |
1193 | case NL80211_IFTYPE_MONITOR: | |
1194 | return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); | |
1195 | case NL80211_IFTYPE_P2P_DEVICE: | |
1196 | return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); | |
5023d966 JB |
1197 | case NL80211_IFTYPE_ADHOC: |
1198 | return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); | |
8ca151b5 JB |
1199 | default: |
1200 | break; | |
1201 | } | |
1202 | ||
1203 | return -EOPNOTSUPP; | |
1204 | } | |
1205 | ||
1206 | int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1207 | { | |
1208 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1209 | int ret; | |
1210 | ||
1211 | if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", | |
1212 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1213 | return -EIO; | |
1214 | ||
bca49d9a | 1215 | ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, |
3dfd3a97 | 1216 | true, NULL); |
8ca151b5 JB |
1217 | if (ret) |
1218 | return ret; | |
1219 | ||
6d9d32b8 JB |
1220 | /* will only do anything at resume from D3 time */ |
1221 | iwl_mvm_set_last_nonqos_seq(mvm, vif); | |
1222 | ||
8ca151b5 JB |
1223 | mvmvif->uploaded = true; |
1224 | return 0; | |
1225 | } | |
1226 | ||
bca49d9a | 1227 | int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
3dfd3a97 | 1228 | bool force_assoc_off, const u8 *bssid_override) |
8ca151b5 JB |
1229 | { |
1230 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1231 | ||
1232 | if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", | |
1233 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1234 | return -EIO; | |
1235 | ||
bca49d9a | 1236 | return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, |
3dfd3a97 | 1237 | force_assoc_off, bssid_override); |
8ca151b5 JB |
1238 | } |
1239 | ||
1240 | int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1241 | { | |
1242 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1243 | struct iwl_mac_ctx_cmd cmd; | |
1244 | int ret; | |
1245 | ||
1246 | if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", | |
1247 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1248 | return -EIO; | |
1249 | ||
1250 | memset(&cmd, 0, sizeof(cmd)); | |
1251 | ||
1252 | cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
1253 | mvmvif->color)); | |
1254 | cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); | |
1255 | ||
a1022927 | 1256 | ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, |
8ca151b5 JB |
1257 | sizeof(cmd), &cmd); |
1258 | if (ret) { | |
1259 | IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); | |
1260 | return ret; | |
1261 | } | |
1262 | ||
1263 | mvmvif->uploaded = false; | |
fb8b8ee1 JB |
1264 | |
1265 | if (vif->type == NL80211_IFTYPE_MONITOR) | |
1266 | mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS; | |
1267 | ||
8ca151b5 JB |
1268 | return 0; |
1269 | } | |
571765c8 | 1270 | |
7f0a7c67 | 1271 | static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, |
7ef0aab6 AO |
1272 | struct ieee80211_vif *csa_vif, u32 gp2, |
1273 | bool tx_success) | |
7f0a7c67 AO |
1274 | { |
1275 | struct iwl_mvm_vif *mvmvif = | |
1276 | iwl_mvm_vif_from_mac80211(csa_vif); | |
1277 | ||
7ef0aab6 AO |
1278 | /* Don't start to countdown from a failed beacon */ |
1279 | if (!tx_success && !mvmvif->csa_countdown) | |
1280 | return; | |
1281 | ||
1282 | mvmvif->csa_countdown = true; | |
1283 | ||
7f0a7c67 AO |
1284 | if (!ieee80211_csa_is_complete(csa_vif)) { |
1285 | int c = ieee80211_csa_update_counter(csa_vif); | |
1286 | ||
1287 | iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); | |
1288 | if (csa_vif->p2p && | |
7ef0aab6 AO |
1289 | !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && |
1290 | tx_success) { | |
7f0a7c67 AO |
1291 | u32 rel_time = (c + 1) * |
1292 | csa_vif->bss_conf.beacon_int - | |
f991e17b | 1293 | IWL_MVM_CHANNEL_SWITCH_TIME_GO; |
7f0a7c67 AO |
1294 | u32 apply_time = gp2 + rel_time * 1024; |
1295 | ||
f991e17b LC |
1296 | iwl_mvm_schedule_csa_period(mvm, csa_vif, |
1297 | IWL_MVM_CHANNEL_SWITCH_TIME_GO - | |
1298 | IWL_MVM_CHANNEL_SWITCH_MARGIN, | |
1299 | apply_time); | |
7f0a7c67 AO |
1300 | } |
1301 | } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { | |
1302 | /* we don't have CSA NoA scheduled yet, switch now */ | |
1303 | ieee80211_csa_finish(csa_vif); | |
1304 | RCU_INIT_POINTER(mvm->csa_vif, NULL); | |
1305 | } | |
1306 | } | |
1307 | ||
571765c8 IP |
1308 | int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, |
1309 | struct iwl_rx_cmd_buffer *rxb, | |
1310 | struct iwl_device_cmd *cmd) | |
1311 | { | |
1312 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2d2c0e9c | 1313 | struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; |
1c87bbad | 1314 | struct iwl_mvm_tx_resp *beacon_notify_hdr; |
664322fa | 1315 | struct ieee80211_vif *csa_vif; |
003e5236 | 1316 | struct ieee80211_vif *tx_blocked_vif; |
7ef0aab6 | 1317 | u16 status; |
571765c8 | 1318 | |
bd3398e2 AO |
1319 | lockdep_assert_held(&mvm->mutex); |
1320 | ||
2d2c0e9c EG |
1321 | beacon_notify_hdr = &beacon->beacon_notify_hdr; |
1322 | mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); | |
1c87bbad | 1323 | |
7ef0aab6 | 1324 | status = le16_to_cpu(beacon_notify_hdr->status.status) & TX_STATUS_MSK; |
1c87bbad DS |
1325 | IWL_DEBUG_RX(mvm, |
1326 | "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n", | |
2d2c0e9c EG |
1327 | status, beacon_notify_hdr->failure_frame, |
1328 | le64_to_cpu(beacon->tsf), | |
1c87bbad DS |
1329 | mvm->ap_last_beacon_gp2, |
1330 | le32_to_cpu(beacon_notify_hdr->initial_rate)); | |
bd3398e2 | 1331 | |
664322fa AO |
1332 | csa_vif = rcu_dereference_protected(mvm->csa_vif, |
1333 | lockdep_is_held(&mvm->mutex)); | |
7f0a7c67 | 1334 | if (unlikely(csa_vif && csa_vif->csa_active)) |
7ef0aab6 AO |
1335 | iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, |
1336 | (status == TX_STATUS_SUCCESS)); | |
bd3398e2 | 1337 | |
003e5236 AO |
1338 | tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, |
1339 | lockdep_is_held(&mvm->mutex)); | |
1340 | if (unlikely(tx_blocked_vif)) { | |
1341 | struct iwl_mvm_vif *mvmvif = | |
1342 | iwl_mvm_vif_from_mac80211(tx_blocked_vif); | |
1343 | ||
1344 | /* | |
1345 | * The channel switch is started and we have blocked the | |
1346 | * stations. If this is the first beacon (the timeout wasn't | |
1347 | * set), set the unblock timeout, otherwise countdown | |
1348 | */ | |
1349 | if (!mvm->csa_tx_block_bcn_timeout) | |
1350 | mvm->csa_tx_block_bcn_timeout = | |
1351 | IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; | |
1352 | else | |
1353 | mvm->csa_tx_block_bcn_timeout--; | |
1354 | ||
1355 | /* Check if the timeout is expired, and unblock tx */ | |
1356 | if (mvm->csa_tx_block_bcn_timeout == 0) { | |
1357 | iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); | |
1358 | RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); | |
1359 | } | |
1360 | } | |
1361 | ||
571765c8 IP |
1362 | return 0; |
1363 | } | |
d64048ed HG |
1364 | |
1365 | static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac, | |
1366 | struct ieee80211_vif *vif) | |
1367 | { | |
12d423e8 | 1368 | struct iwl_missed_beacons_notif *missed_beacons = _data; |
d64048ed HG |
1369 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
1370 | ||
12d423e8 IP |
1371 | if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id)) |
1372 | return; | |
1373 | ||
1374 | /* | |
1375 | * TODO: the threshold should be adjusted based on latency conditions, | |
1376 | * and/or in case of a CS flow on one of the other AP vifs. | |
1377 | */ | |
1378 | if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) > | |
1379 | IWL_MVM_MISSED_BEACONS_THRESHOLD) | |
d64048ed HG |
1380 | ieee80211_beacon_loss(vif); |
1381 | } | |
1382 | ||
1383 | int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, | |
1384 | struct iwl_rx_cmd_buffer *rxb, | |
1385 | struct iwl_device_cmd *cmd) | |
1386 | { | |
1387 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
12d423e8 IP |
1388 | struct iwl_missed_beacons_notif *mb = (void *)pkt->data; |
1389 | ||
1390 | IWL_DEBUG_INFO(mvm, | |
1391 | "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", | |
1392 | le32_to_cpu(mb->mac_id), | |
1393 | le32_to_cpu(mb->consec_missed_beacons), | |
1394 | le32_to_cpu(mb->consec_missed_beacons_since_last_rx), | |
1395 | le32_to_cpu(mb->num_recvd_beacons), | |
1396 | le32_to_cpu(mb->num_expected_beacons)); | |
d64048ed HG |
1397 | |
1398 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
1399 | IEEE80211_IFACE_ITER_NORMAL, | |
1400 | iwl_mvm_beacon_loss_iterator, | |
12d423e8 | 1401 | mb); |
d64048ed HG |
1402 | return 0; |
1403 | } |