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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 | * | |
8 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of version 2 of the GNU General Public License as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
22 | * USA | |
23 | * | |
24 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 25 | * in the file called COPYING. |
8ca151b5 JB |
26 | * |
27 | * Contact Information: | |
28 | * Intel Linux Wireless <ilw@linux.intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
33 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
34 | * All rights reserved. | |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | * | |
62 | *****************************************************************************/ | |
63 | ||
64 | #include <linux/etherdevice.h> | |
65 | #include <net/mac80211.h> | |
66 | #include "iwl-io.h" | |
67 | #include "iwl-prph.h" | |
68 | #include "fw-api.h" | |
69 | #include "mvm.h" | |
70 | ||
71 | const u8 iwl_mvm_ac_to_tx_fifo[] = { | |
8ca151b5 | 72 | IWL_MVM_TX_FIFO_VO, |
3dd94794 EG |
73 | IWL_MVM_TX_FIFO_VI, |
74 | IWL_MVM_TX_FIFO_BE, | |
75 | IWL_MVM_TX_FIFO_BK, | |
8ca151b5 JB |
76 | }; |
77 | ||
78 | struct iwl_mvm_mac_iface_iterator_data { | |
79 | struct iwl_mvm *mvm; | |
80 | struct ieee80211_vif *vif; | |
81 | unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; | |
82 | unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; | |
19e737c9 | 83 | unsigned long used_hw_queues[BITS_TO_LONGS(IWL_MVM_MAX_QUEUES)]; |
8ca151b5 JB |
84 | enum iwl_tsf_id preferred_tsf; |
85 | bool found_vif; | |
86 | }; | |
87 | ||
6e97b0d2 IP |
88 | static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, |
89 | struct ieee80211_vif *vif) | |
8ca151b5 JB |
90 | { |
91 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
92 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
8ca151b5 | 93 | |
6e97b0d2 IP |
94 | /* Skip the interface for which we are trying to assign a tsf_id */ |
95 | if (vif == data->vif) | |
8ca151b5 | 96 | return; |
8ca151b5 JB |
97 | |
98 | /* | |
99 | * The TSF is a hardware/firmware resource, there are 4 and | |
100 | * the driver should assign and free them as needed. However, | |
101 | * there are cases where 2 MACs should share the same TSF ID | |
102 | * for the purpose of clock sync, an optimization to avoid | |
103 | * clock drift causing overlapping TBTTs/DTIMs for a GO and | |
104 | * client in the system. | |
105 | * | |
106 | * The firmware will decide according to the MAC type which | |
107 | * will be the master and slave. Clients that need to sync | |
108 | * with a remote station will be the master, and an AP or GO | |
109 | * will be the slave. | |
110 | * | |
111 | * Depending on the new interface type it can be slaved to | |
112 | * or become the master of an existing interface. | |
113 | */ | |
114 | switch (data->vif->type) { | |
115 | case NL80211_IFTYPE_STATION: | |
116 | /* | |
117 | * The new interface is client, so if the existing one | |
6e97b0d2 IP |
118 | * we're iterating is an AP, and both interfaces have the |
119 | * same beacon interval, the same TSF should be used to | |
8ca151b5 JB |
120 | * avoid drift between the new client and existing AP, |
121 | * the existing AP will get drift updates from the new | |
122 | * client context in this case | |
123 | */ | |
124 | if (vif->type == NL80211_IFTYPE_AP) { | |
125 | if (data->preferred_tsf == NUM_TSF_IDS && | |
6e97b0d2 IP |
126 | test_bit(mvmvif->tsf_id, data->available_tsf_ids) && |
127 | (vif->bss_conf.beacon_int == | |
128 | data->vif->bss_conf.beacon_int)) { | |
8ca151b5 | 129 | data->preferred_tsf = mvmvif->tsf_id; |
6e97b0d2 IP |
130 | return; |
131 | } | |
8ca151b5 JB |
132 | } |
133 | break; | |
134 | case NL80211_IFTYPE_AP: | |
135 | /* | |
6e97b0d2 IP |
136 | * The new interface is AP/GO, so in case both interfaces |
137 | * have the same beacon interval, it should get drift | |
8ca151b5 JB |
138 | * updates from an existing client or use the same |
139 | * TSF as an existing GO. There's no drift between | |
140 | * TSFs internally but if they used different TSFs | |
141 | * then a new client MAC could update one of them | |
142 | * and cause drift that way. | |
143 | */ | |
144 | if (vif->type == NL80211_IFTYPE_STATION || | |
145 | vif->type == NL80211_IFTYPE_AP) { | |
146 | if (data->preferred_tsf == NUM_TSF_IDS && | |
6e97b0d2 IP |
147 | test_bit(mvmvif->tsf_id, data->available_tsf_ids) && |
148 | (vif->bss_conf.beacon_int == | |
149 | data->vif->bss_conf.beacon_int)) { | |
8ca151b5 | 150 | data->preferred_tsf = mvmvif->tsf_id; |
6e97b0d2 IP |
151 | return; |
152 | } | |
8ca151b5 JB |
153 | } |
154 | break; | |
155 | default: | |
156 | /* | |
157 | * For all other interface types there's no need to | |
158 | * take drift into account. Either they're exclusive | |
159 | * like IBSS and monitor, or we don't care much about | |
160 | * their TSF (like P2P Device), but we won't be able | |
161 | * to share the TSF resource. | |
162 | */ | |
163 | break; | |
164 | } | |
165 | ||
166 | /* | |
167 | * Unless we exited above, we can't share the TSF resource | |
168 | * that the virtual interface we're iterating over is using | |
169 | * with the new one, so clear the available bit and if this | |
170 | * was the preferred one, reset that as well. | |
171 | */ | |
172 | __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); | |
173 | ||
174 | if (data->preferred_tsf == mvmvif->tsf_id) | |
175 | data->preferred_tsf = NUM_TSF_IDS; | |
176 | } | |
177 | ||
6e97b0d2 IP |
178 | static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, |
179 | struct ieee80211_vif *vif) | |
180 | { | |
181 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
182 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
183 | u32 ac; | |
184 | ||
185 | /* Iterator may already find the interface being added -- skip it */ | |
186 | if (vif == data->vif) { | |
187 | data->found_vif = true; | |
188 | return; | |
189 | } | |
190 | ||
191 | /* Mark the queues used by the vif */ | |
192 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
193 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
194 | __set_bit(vif->hw_queue[ac], data->used_hw_queues); | |
195 | ||
196 | if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
197 | __set_bit(vif->cab_queue, data->used_hw_queues); | |
198 | ||
199 | /* Mark MAC IDs as used by clearing the available bit, and | |
200 | * (below) mark TSFs as used if their existing use is not | |
201 | * compatible with the new interface type. | |
202 | * No locking or atomic bit operations are needed since the | |
203 | * data is on the stack of the caller function. | |
204 | */ | |
205 | __clear_bit(mvmvif->id, data->available_mac_ids); | |
206 | ||
207 | /* find a suitable tsf_id */ | |
208 | iwl_mvm_mac_tsf_id_iter(_data, mac, vif); | |
209 | } | |
210 | ||
8ca151b5 JB |
211 | /* |
212 | * Get the mask of the queus used by the vif | |
213 | */ | |
214 | u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm, | |
215 | struct ieee80211_vif *vif) | |
216 | { | |
837fb69f | 217 | u32 qmask = 0, ac; |
8ca151b5 JB |
218 | |
219 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
398e8c6c | 220 | return BIT(IWL_MVM_OFFCHANNEL_QUEUE); |
8ca151b5 | 221 | |
8ca151b5 JB |
222 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
223 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
224 | qmask |= BIT(vif->hw_queue[ac]); | |
225 | ||
226 | return qmask; | |
227 | } | |
228 | ||
6e97b0d2 IP |
229 | void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, |
230 | struct ieee80211_vif *vif) | |
231 | { | |
232 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
233 | struct iwl_mvm_mac_iface_iterator_data data = { | |
234 | .mvm = mvm, | |
235 | .vif = vif, | |
236 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
237 | /* no preference yet */ | |
238 | .preferred_tsf = NUM_TSF_IDS, | |
239 | }; | |
240 | ||
241 | ieee80211_iterate_active_interfaces_atomic( | |
242 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
243 | iwl_mvm_mac_tsf_id_iter, &data); | |
244 | ||
245 | if (data.preferred_tsf != NUM_TSF_IDS) | |
246 | mvmvif->tsf_id = data.preferred_tsf; | |
247 | else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) | |
248 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
249 | NUM_TSF_IDS); | |
250 | } | |
251 | ||
8ca151b5 JB |
252 | static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm, |
253 | struct ieee80211_vif *vif) | |
254 | { | |
255 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
256 | struct iwl_mvm_mac_iface_iterator_data data = { | |
257 | .mvm = mvm, | |
258 | .vif = vif, | |
259 | .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, | |
260 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
261 | /* no preference yet */ | |
262 | .preferred_tsf = NUM_TSF_IDS, | |
263 | .used_hw_queues = { | |
264 | BIT(IWL_MVM_OFFCHANNEL_QUEUE) | | |
19e737c9 | 265 | BIT(mvm->aux_queue) | |
8ca151b5 JB |
266 | BIT(IWL_MVM_CMD_QUEUE) |
267 | }, | |
268 | .found_vif = false, | |
269 | }; | |
270 | u32 ac; | |
9ee718aa | 271 | int ret, i; |
8ca151b5 JB |
272 | |
273 | /* | |
274 | * Allocate a MAC ID and a TSF for this MAC, along with the queues | |
275 | * and other resources. | |
276 | */ | |
277 | ||
278 | /* | |
279 | * Before the iterator, we start with all MAC IDs and TSFs available. | |
280 | * | |
281 | * During iteration, all MAC IDs are cleared that are in use by other | |
282 | * virtual interfaces, and all TSF IDs are cleared that can't be used | |
283 | * by this new virtual interface because they're used by an interface | |
284 | * that can't share it with the new one. | |
285 | * At the same time, we check if there's a preferred TSF in the case | |
286 | * that we should share it with another interface. | |
287 | */ | |
288 | ||
5023d966 JB |
289 | /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ |
290 | switch (vif->type) { | |
291 | case NL80211_IFTYPE_ADHOC: | |
292 | break; | |
293 | case NL80211_IFTYPE_STATION: | |
294 | if (!vif->p2p) | |
295 | break; | |
296 | /* fall through */ | |
297 | default: | |
ec8b6885 | 298 | __clear_bit(0, data.available_mac_ids); |
5023d966 | 299 | } |
ec8b6885 | 300 | |
8ca151b5 JB |
301 | ieee80211_iterate_active_interfaces_atomic( |
302 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
303 | iwl_mvm_mac_iface_iterator, &data); | |
304 | ||
305 | /* | |
306 | * In the case we're getting here during resume, it's similar to | |
307 | * firmware restart, and with RESUME_ALL the iterator will find | |
308 | * the vif being added already. | |
309 | * We don't want to reassign any IDs in either case since doing | |
310 | * so would probably assign different IDs (as interfaces aren't | |
311 | * necessarily added in the same order), but the old IDs were | |
312 | * preserved anyway, so skip ID assignment for both resume and | |
313 | * recovery. | |
314 | */ | |
315 | if (data.found_vif) | |
316 | return 0; | |
317 | ||
318 | /* Therefore, in recovery, we can't get here */ | |
fd11bd05 IP |
319 | if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
320 | return -EBUSY; | |
8ca151b5 JB |
321 | |
322 | mvmvif->id = find_first_bit(data.available_mac_ids, | |
323 | NUM_MAC_INDEX_DRIVER); | |
324 | if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { | |
325 | IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); | |
326 | ret = -EIO; | |
327 | goto exit_fail; | |
328 | } | |
329 | ||
330 | if (data.preferred_tsf != NUM_TSF_IDS) | |
331 | mvmvif->tsf_id = data.preferred_tsf; | |
332 | else | |
333 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
334 | NUM_TSF_IDS); | |
335 | if (mvmvif->tsf_id == NUM_TSF_IDS) { | |
336 | IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); | |
337 | ret = -EIO; | |
338 | goto exit_fail; | |
339 | } | |
340 | ||
341 | mvmvif->color = 0; | |
342 | ||
1e849c93 IP |
343 | INIT_LIST_HEAD(&mvmvif->time_event_data.list); |
344 | mvmvif->time_event_data.id = TE_MAX; | |
345 | ||
8ca151b5 JB |
346 | /* No need to allocate data queues to P2P Device MAC.*/ |
347 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
348 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
349 | vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | /* Find available queues, and allocate them to the ACs */ | |
355 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
356 | u8 queue = find_first_zero_bit(data.used_hw_queues, | |
19e737c9 | 357 | mvm->first_agg_queue); |
8ca151b5 | 358 | |
19e737c9 | 359 | if (queue >= mvm->first_agg_queue) { |
8ca151b5 JB |
360 | IWL_ERR(mvm, "Failed to allocate queue\n"); |
361 | ret = -EIO; | |
362 | goto exit_fail; | |
363 | } | |
364 | ||
365 | __set_bit(queue, data.used_hw_queues); | |
366 | vif->hw_queue[ac] = queue; | |
367 | } | |
368 | ||
369 | /* Allocate the CAB queue for softAP and GO interfaces */ | |
370 | if (vif->type == NL80211_IFTYPE_AP) { | |
371 | u8 queue = find_first_zero_bit(data.used_hw_queues, | |
19e737c9 | 372 | mvm->first_agg_queue); |
8ca151b5 | 373 | |
19e737c9 | 374 | if (queue >= mvm->first_agg_queue) { |
8ca151b5 JB |
375 | IWL_ERR(mvm, "Failed to allocate cab queue\n"); |
376 | ret = -EIO; | |
377 | goto exit_fail; | |
378 | } | |
379 | ||
380 | vif->cab_queue = queue; | |
381 | } else { | |
382 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
383 | } | |
384 | ||
385 | mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT; | |
386 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
387 | ||
9ee718aa EL |
388 | for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) |
389 | mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; | |
390 | ||
8ca151b5 JB |
391 | return 0; |
392 | ||
393 | exit_fail: | |
394 | memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); | |
395 | memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue)); | |
396 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
397 | return ret; | |
398 | } | |
399 | ||
400 | int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
401 | { | |
402 | u32 ac; | |
403 | int ret; | |
404 | ||
405 | lockdep_assert_held(&mvm->mutex); | |
406 | ||
407 | ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif); | |
408 | if (ret) | |
409 | return ret; | |
410 | ||
411 | switch (vif->type) { | |
412 | case NL80211_IFTYPE_P2P_DEVICE: | |
413 | iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE, | |
414 | IWL_MVM_TX_FIFO_VO); | |
415 | break; | |
416 | case NL80211_IFTYPE_AP: | |
417 | iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue, | |
86a91ec7 | 418 | IWL_MVM_TX_FIFO_MCAST); |
8ca151b5 JB |
419 | /* fall through */ |
420 | default: | |
421 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
422 | iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac], | |
423 | iwl_mvm_ac_to_tx_fifo[ac]); | |
424 | break; | |
425 | } | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
430 | void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
431 | { | |
432 | int ac; | |
433 | ||
434 | lockdep_assert_held(&mvm->mutex); | |
435 | ||
436 | switch (vif->type) { | |
437 | case NL80211_IFTYPE_P2P_DEVICE: | |
438 | iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE); | |
439 | break; | |
440 | case NL80211_IFTYPE_AP: | |
441 | iwl_trans_txq_disable(mvm->trans, vif->cab_queue); | |
442 | /* fall through */ | |
443 | default: | |
444 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
445 | iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]); | |
446 | } | |
447 | } | |
448 | ||
449 | static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, | |
450 | struct ieee80211_vif *vif, | |
451 | enum ieee80211_band band, | |
452 | u8 *cck_rates, u8 *ofdm_rates) | |
453 | { | |
454 | struct ieee80211_supported_band *sband; | |
455 | unsigned long basic = vif->bss_conf.basic_rates; | |
456 | int lowest_present_ofdm = 100; | |
457 | int lowest_present_cck = 100; | |
458 | u8 cck = 0; | |
459 | u8 ofdm = 0; | |
460 | int i; | |
461 | ||
462 | sband = mvm->hw->wiphy->bands[band]; | |
463 | ||
464 | for_each_set_bit(i, &basic, BITS_PER_LONG) { | |
465 | int hw = sband->bitrates[i].hw_value; | |
466 | if (hw >= IWL_FIRST_OFDM_RATE) { | |
467 | ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); | |
468 | if (lowest_present_ofdm > hw) | |
469 | lowest_present_ofdm = hw; | |
470 | } else { | |
471 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
472 | ||
473 | cck |= BIT(hw); | |
474 | if (lowest_present_cck > hw) | |
475 | lowest_present_cck = hw; | |
476 | } | |
477 | } | |
478 | ||
479 | /* | |
480 | * Now we've got the basic rates as bitmaps in the ofdm and cck | |
481 | * variables. This isn't sufficient though, as there might not | |
482 | * be all the right rates in the bitmap. E.g. if the only basic | |
483 | * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps | |
484 | * and 6 Mbps because the 802.11-2007 standard says in 9.6: | |
485 | * | |
486 | * [...] a STA responding to a received frame shall transmit | |
487 | * its Control Response frame [...] at the highest rate in the | |
488 | * BSSBasicRateSet parameter that is less than or equal to the | |
489 | * rate of the immediately previous frame in the frame exchange | |
490 | * sequence ([...]) and that is of the same modulation class | |
491 | * ([...]) as the received frame. If no rate contained in the | |
492 | * BSSBasicRateSet parameter meets these conditions, then the | |
493 | * control frame sent in response to a received frame shall be | |
494 | * transmitted at the highest mandatory rate of the PHY that is | |
495 | * less than or equal to the rate of the received frame, and | |
496 | * that is of the same modulation class as the received frame. | |
497 | * | |
498 | * As a consequence, we need to add all mandatory rates that are | |
499 | * lower than all of the basic rates to these bitmaps. | |
500 | */ | |
501 | ||
502 | if (IWL_RATE_24M_INDEX < lowest_present_ofdm) | |
503 | ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; | |
504 | if (IWL_RATE_12M_INDEX < lowest_present_ofdm) | |
505 | ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; | |
506 | /* 6M already there or needed so always add */ | |
507 | ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; | |
508 | ||
509 | /* | |
510 | * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. | |
511 | * Note, however: | |
512 | * - if no CCK rates are basic, it must be ERP since there must | |
513 | * be some basic rates at all, so they're OFDM => ERP PHY | |
514 | * (or we're in 5 GHz, and the cck bitmap will never be used) | |
515 | * - if 11M is a basic rate, it must be ERP as well, so add 5.5M | |
516 | * - if 5.5M is basic, 1M and 2M are mandatory | |
517 | * - if 2M is basic, 1M is mandatory | |
518 | * - if 1M is basic, that's the only valid ACK rate. | |
519 | * As a consequence, it's not as complicated as it sounds, just add | |
520 | * any lower rates to the ACK rate bitmap. | |
521 | */ | |
522 | if (IWL_RATE_11M_INDEX < lowest_present_cck) | |
523 | cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; | |
524 | if (IWL_RATE_5M_INDEX < lowest_present_cck) | |
525 | cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; | |
526 | if (IWL_RATE_2M_INDEX < lowest_present_cck) | |
527 | cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; | |
528 | /* 1M already there or needed so always add */ | |
529 | cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; | |
530 | ||
531 | *cck_rates = cck; | |
532 | *ofdm_rates = ofdm; | |
533 | } | |
534 | ||
8a5e3660 AA |
535 | static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, |
536 | struct ieee80211_vif *vif, | |
537 | struct iwl_mac_ctx_cmd *cmd) | |
538 | { | |
539 | /* for both sta and ap, ht_operation_mode hold the protection_mode */ | |
540 | u8 protection_mode = vif->bss_conf.ht_operation_mode & | |
541 | IEEE80211_HT_OP_MODE_PROTECTION; | |
542 | /* The fw does not distinguish between ht and fat */ | |
543 | u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; | |
544 | ||
545 | IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); | |
546 | /* | |
547 | * See section 9.23.3.1 of IEEE 80211-2012. | |
548 | * Nongreenfield HT STAs Present is not supported. | |
549 | */ | |
550 | switch (protection_mode) { | |
551 | case IEEE80211_HT_OP_MODE_PROTECTION_NONE: | |
552 | break; | |
553 | case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: | |
554 | case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: | |
555 | cmd->protection_flags |= cpu_to_le32(ht_flag); | |
556 | break; | |
557 | case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: | |
558 | /* Protect when channel wider than 20MHz */ | |
559 | if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) | |
560 | cmd->protection_flags |= cpu_to_le32(ht_flag); | |
561 | break; | |
562 | default: | |
563 | IWL_ERR(mvm, "Illegal protection mode %d\n", | |
564 | protection_mode); | |
565 | break; | |
566 | } | |
567 | } | |
568 | ||
8ca151b5 JB |
569 | static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, |
570 | struct ieee80211_vif *vif, | |
571 | struct iwl_mac_ctx_cmd *cmd, | |
572 | u32 action) | |
573 | { | |
574 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
575 | struct ieee80211_chanctx_conf *chanctx; | |
8a5e3660 AA |
576 | bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & |
577 | IEEE80211_HT_OP_MODE_PROTECTION); | |
8ca151b5 JB |
578 | u8 cck_ack_rates, ofdm_ack_rates; |
579 | int i; | |
580 | ||
581 | cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
582 | mvmvif->color)); | |
583 | cmd->action = cpu_to_le32(action); | |
584 | ||
585 | switch (vif->type) { | |
586 | case NL80211_IFTYPE_STATION: | |
587 | if (vif->p2p) | |
588 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); | |
589 | else | |
590 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); | |
591 | break; | |
592 | case NL80211_IFTYPE_AP: | |
593 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); | |
594 | break; | |
595 | case NL80211_IFTYPE_MONITOR: | |
596 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); | |
597 | break; | |
598 | case NL80211_IFTYPE_P2P_DEVICE: | |
599 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); | |
600 | break; | |
601 | case NL80211_IFTYPE_ADHOC: | |
602 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); | |
603 | break; | |
604 | default: | |
605 | WARN_ON_ONCE(1); | |
606 | } | |
607 | ||
608 | cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); | |
609 | ||
610 | memcpy(cmd->node_addr, vif->addr, ETH_ALEN); | |
611 | if (vif->bss_conf.bssid) | |
612 | memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN); | |
613 | else | |
614 | eth_broadcast_addr(cmd->bssid_addr); | |
615 | ||
616 | rcu_read_lock(); | |
617 | chanctx = rcu_dereference(vif->chanctx_conf); | |
618 | iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band | |
619 | : IEEE80211_BAND_2GHZ, | |
620 | &cck_ack_rates, &ofdm_ack_rates); | |
621 | rcu_read_unlock(); | |
622 | ||
623 | cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); | |
624 | cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); | |
625 | ||
626 | cmd->cck_short_preamble = | |
627 | cpu_to_le32(vif->bss_conf.use_short_preamble ? | |
628 | MAC_FLG_SHORT_PREAMBLE : 0); | |
629 | cmd->short_slot = | |
630 | cpu_to_le32(vif->bss_conf.use_short_slot ? | |
631 | MAC_FLG_SHORT_SLOT : 0); | |
632 | ||
3dd94794 EG |
633 | for (i = 0; i < IEEE80211_NUM_ACS; i++) { |
634 | u8 txf = iwl_mvm_ac_to_tx_fifo[i]; | |
635 | ||
636 | cmd->ac[txf].cw_min = | |
637 | cpu_to_le16(mvmvif->queue_params[i].cw_min); | |
638 | cmd->ac[txf].cw_max = | |
639 | cpu_to_le16(mvmvif->queue_params[i].cw_max); | |
640 | cmd->ac[txf].edca_txop = | |
8ca151b5 | 641 | cpu_to_le16(mvmvif->queue_params[i].txop * 32); |
3dd94794 EG |
642 | cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs; |
643 | cmd->ac[txf].fifos_mask = BIT(txf); | |
8ca151b5 JB |
644 | } |
645 | ||
86a91ec7 EG |
646 | /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ |
647 | if (vif->type == NL80211_IFTYPE_AP) | |
3dd94794 EG |
648 | cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= |
649 | BIT(IWL_MVM_TX_FIFO_MCAST); | |
86a91ec7 | 650 | |
8ca151b5 JB |
651 | if (vif->bss_conf.qos) |
652 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); | |
653 | ||
cc7ee2ba | 654 | /* Don't use cts to self as the fw doesn't support it currently. */ |
2e0cc865 | 655 | if (vif->bss_conf.use_cts_prot) { |
cc7ee2ba | 656 | cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); |
2e0cc865 EG |
657 | if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 8) |
658 | cmd->protection_flags |= | |
659 | cpu_to_le32(MAC_PROT_FLG_SELF_CTS_EN); | |
660 | } | |
8a5e3660 AA |
661 | IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", |
662 | vif->bss_conf.use_cts_prot, | |
663 | vif->bss_conf.ht_operation_mode); | |
664 | if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) | |
8ca151b5 | 665 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); |
8a5e3660 AA |
666 | if (ht_enabled) |
667 | iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); | |
8ca151b5 JB |
668 | |
669 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); | |
670 | } | |
671 | ||
672 | static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, | |
673 | struct iwl_mac_ctx_cmd *cmd) | |
674 | { | |
675 | int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC, | |
676 | sizeof(*cmd), cmd); | |
677 | if (ret) | |
678 | IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", | |
679 | le32_to_cpu(cmd->action), ret); | |
680 | return ret; | |
681 | } | |
682 | ||
683 | /* | |
684 | * Fill the specific data for mac context of type station or p2p client | |
685 | */ | |
686 | static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm, | |
687 | struct ieee80211_vif *vif, | |
ba283927 AB |
688 | struct iwl_mac_data_sta *ctxt_sta, |
689 | bool force_assoc_off) | |
8ca151b5 | 690 | { |
210a544e | 691 | /* We need the dtim_period to set the MAC as associated */ |
ba283927 AB |
692 | if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && |
693 | !force_assoc_off) { | |
d2931bbd JB |
694 | u32 dtim_offs; |
695 | ||
696 | /* | |
697 | * The DTIM count counts down, so when it is N that means N | |
698 | * more beacon intervals happen until the DTIM TBTT. Therefore | |
699 | * add this to the current time. If that ends up being in the | |
700 | * future, the firmware will handle it. | |
701 | * | |
702 | * Also note that the system_timestamp (which we get here as | |
703 | * "sync_device_ts") and TSF timestamp aren't at exactly the | |
704 | * same offset in the frame -- the TSF is at the first symbol | |
705 | * of the TSF, the system timestamp is at signal acquisition | |
706 | * time. This means there's an offset between them of at most | |
707 | * a few hundred microseconds (24 * 8 bits + PLCP time gives | |
708 | * 384us in the longest case), this is currently not relevant | |
709 | * as the firmware wakes up around 2ms before the TBTT. | |
710 | */ | |
711 | dtim_offs = vif->bss_conf.sync_dtim_count * | |
712 | vif->bss_conf.beacon_int; | |
713 | /* convert TU to usecs */ | |
714 | dtim_offs *= 1024; | |
715 | ||
716 | ctxt_sta->dtim_tsf = | |
717 | cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); | |
718 | ctxt_sta->dtim_time = | |
719 | cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); | |
720 | ||
721 | IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", | |
722 | le64_to_cpu(ctxt_sta->dtim_tsf), | |
723 | le32_to_cpu(ctxt_sta->dtim_time), | |
724 | dtim_offs); | |
725 | ||
210a544e | 726 | ctxt_sta->is_assoc = cpu_to_le32(1); |
d2931bbd | 727 | } else { |
210a544e | 728 | ctxt_sta->is_assoc = cpu_to_le32(0); |
d2931bbd | 729 | } |
8ca151b5 JB |
730 | |
731 | ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
732 | ctxt_sta->bi_reciprocal = | |
733 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
734 | ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
735 | vif->bss_conf.dtim_period); | |
736 | ctxt_sta->dtim_reciprocal = | |
737 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
738 | vif->bss_conf.dtim_period)); | |
739 | ||
740 | ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); | |
741 | ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); | |
742 | } | |
743 | ||
744 | static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm, | |
745 | struct ieee80211_vif *vif, | |
746 | u32 action) | |
747 | { | |
748 | struct iwl_mac_ctx_cmd cmd = {}; | |
749 | ||
750 | WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p); | |
751 | ||
752 | /* Fill the common data for all mac context types */ | |
753 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
754 | ||
1dcd15ee IP |
755 | /* Allow beacons to pass through as long as we are not associated,or we |
756 | * do not have dtim period information */ | |
757 | if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period) | |
758 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); | |
759 | else | |
760 | cmd.filter_flags &= ~cpu_to_le32(MAC_FILTER_IN_BEACON); | |
761 | ||
8ca151b5 | 762 | /* Fill the data specific for station mode */ |
ba283927 AB |
763 | iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta, |
764 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 JB |
765 | |
766 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
767 | } | |
768 | ||
769 | static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm, | |
770 | struct ieee80211_vif *vif, | |
771 | u32 action) | |
772 | { | |
773 | struct iwl_mac_ctx_cmd cmd = {}; | |
67baf663 | 774 | struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; |
8ca151b5 JB |
775 | |
776 | WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p); | |
777 | ||
778 | /* Fill the common data for all mac context types */ | |
779 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
780 | ||
781 | /* Fill the data specific for station mode */ | |
ba283927 AB |
782 | iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta, |
783 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 | 784 | |
67baf663 JD |
785 | cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & |
786 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
8ca151b5 JB |
787 | |
788 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
789 | } | |
790 | ||
791 | static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, | |
792 | struct ieee80211_vif *vif, | |
793 | u32 action) | |
794 | { | |
795 | struct iwl_mac_ctx_cmd cmd = {}; | |
796 | ||
797 | WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); | |
798 | ||
799 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
53585495 JB |
800 | |
801 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | | |
802 | MAC_FILTER_IN_CONTROL_AND_MGMT | | |
803 | MAC_FILTER_IN_BEACON | | |
fb8b8ee1 JB |
804 | MAC_FILTER_IN_PROBE_REQUEST | |
805 | MAC_FILTER_IN_CRC32); | |
806 | mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS; | |
53585495 | 807 | |
8ca151b5 JB |
808 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); |
809 | } | |
810 | ||
5023d966 JB |
811 | static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, |
812 | struct ieee80211_vif *vif, | |
813 | u32 action) | |
814 | { | |
815 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
816 | struct iwl_mac_ctx_cmd cmd = {}; | |
817 | ||
818 | WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); | |
819 | ||
820 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
821 | ||
822 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | | |
823 | MAC_FILTER_IN_PROBE_REQUEST); | |
824 | ||
825 | /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ | |
826 | cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
827 | cmd.ibss.bi_reciprocal = | |
828 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
829 | ||
830 | /* TODO: Assumes that the beacon id == mac context id */ | |
831 | cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); | |
832 | ||
833 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
834 | } | |
835 | ||
8ca151b5 JB |
836 | struct iwl_mvm_go_iterator_data { |
837 | bool go_active; | |
838 | }; | |
839 | ||
840 | static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) | |
841 | { | |
842 | struct iwl_mvm_go_iterator_data *data = _data; | |
843 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
844 | ||
5023d966 JB |
845 | if (vif->type == NL80211_IFTYPE_AP && vif->p2p && |
846 | mvmvif->ap_ibss_active) | |
8ca151b5 JB |
847 | data->go_active = true; |
848 | } | |
849 | ||
850 | static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, | |
851 | struct ieee80211_vif *vif, | |
852 | u32 action) | |
853 | { | |
854 | struct iwl_mac_ctx_cmd cmd = {}; | |
855 | struct iwl_mvm_go_iterator_data data = {}; | |
856 | ||
857 | WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); | |
858 | ||
859 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
860 | ||
861 | cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); | |
1dcd15ee IP |
862 | |
863 | /* Override the filter flags to accept only probe requests */ | |
864 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
8ca151b5 JB |
865 | |
866 | /* | |
867 | * This flag should be set to true when the P2P Device is | |
868 | * discoverable and there is at least another active P2P GO. Settings | |
869 | * this flag will allow the P2P Device to be discoverable on other | |
870 | * channels in addition to its listen channel. | |
871 | * Note that this flag should not be set in other cases as it opens the | |
872 | * Rx filters on all MAC and increases the number of interrupts. | |
873 | */ | |
874 | ieee80211_iterate_active_interfaces_atomic( | |
875 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
876 | iwl_mvm_go_iterator, &data); | |
877 | ||
878 | cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); | |
879 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
880 | } | |
881 | ||
882 | static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, | |
883 | struct iwl_mac_beacon_cmd *beacon_cmd, | |
884 | u8 *beacon, u32 frame_size) | |
885 | { | |
886 | u32 tim_idx; | |
887 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; | |
888 | ||
889 | /* The index is relative to frame start but we start looking at the | |
890 | * variable-length part of the beacon. */ | |
891 | tim_idx = mgmt->u.beacon.variable - beacon; | |
892 | ||
893 | /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ | |
894 | while ((tim_idx < (frame_size - 2)) && | |
895 | (beacon[tim_idx] != WLAN_EID_TIM)) | |
896 | tim_idx += beacon[tim_idx+1] + 2; | |
897 | ||
898 | /* If TIM field was found, set variables */ | |
899 | if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { | |
900 | beacon_cmd->tim_idx = cpu_to_le32(tim_idx); | |
901 | beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]); | |
902 | } else { | |
903 | IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); | |
904 | } | |
905 | } | |
906 | ||
907 | static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, | |
908 | struct ieee80211_vif *vif, | |
909 | struct sk_buff *beacon) | |
910 | { | |
911 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
912 | struct iwl_host_cmd cmd = { | |
913 | .id = BEACON_TEMPLATE_CMD, | |
914 | .flags = CMD_ASYNC, | |
915 | }; | |
916 | struct iwl_mac_beacon_cmd beacon_cmd = {}; | |
917 | struct ieee80211_tx_info *info; | |
918 | u32 beacon_skb_len; | |
919 | u32 rate; | |
920 | ||
921 | if (WARN_ON(!beacon)) | |
922 | return -EINVAL; | |
923 | ||
924 | beacon_skb_len = beacon->len; | |
925 | ||
926 | /* TODO: for now the beacon template id is set to be the mac context id. | |
927 | * Might be better to handle it as another resource ... */ | |
928 | beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); | |
929 | ||
930 | /* Set up TX command fields */ | |
931 | beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len); | |
932 | beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id; | |
933 | beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
934 | beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
935 | TX_CMD_FLG_BT_DIS | | |
936 | TX_CMD_FLG_TSF); | |
937 | ||
938 | mvm->mgmt_last_antenna_idx = | |
33223542 | 939 | iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw), |
8ca151b5 JB |
940 | mvm->mgmt_last_antenna_idx); |
941 | ||
942 | beacon_cmd.tx.rate_n_flags = | |
943 | cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << | |
944 | RATE_MCS_ANT_POS); | |
945 | ||
946 | info = IEEE80211_SKB_CB(beacon); | |
947 | ||
948 | if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) { | |
949 | rate = IWL_FIRST_OFDM_RATE; | |
950 | } else { | |
951 | rate = IWL_FIRST_CCK_RATE; | |
952 | beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); | |
953 | } | |
954 | beacon_cmd.tx.rate_n_flags |= | |
955 | cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); | |
956 | ||
957 | /* Set up TX beacon command fields */ | |
5023d966 JB |
958 | if (vif->type == NL80211_IFTYPE_AP) |
959 | iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd, | |
960 | beacon->data, | |
961 | beacon_skb_len); | |
8ca151b5 JB |
962 | |
963 | /* Submit command */ | |
964 | cmd.len[0] = sizeof(beacon_cmd); | |
965 | cmd.data[0] = &beacon_cmd; | |
966 | cmd.dataflags[0] = 0; | |
967 | cmd.len[1] = beacon_skb_len; | |
968 | cmd.data[1] = beacon->data; | |
969 | cmd.dataflags[1] = IWL_HCMD_DFL_DUP; | |
970 | ||
971 | return iwl_mvm_send_cmd(mvm, &cmd); | |
972 | } | |
973 | ||
5023d966 | 974 | /* The beacon template for the AP/GO/IBSS has changed and needs update */ |
8ca151b5 JB |
975 | int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, |
976 | struct ieee80211_vif *vif) | |
977 | { | |
978 | struct sk_buff *beacon; | |
979 | int ret; | |
980 | ||
5023d966 JB |
981 | WARN_ON(vif->type != NL80211_IFTYPE_AP && |
982 | vif->type != NL80211_IFTYPE_ADHOC); | |
8ca151b5 JB |
983 | |
984 | beacon = ieee80211_beacon_get(mvm->hw, vif); | |
985 | if (!beacon) | |
986 | return -ENOMEM; | |
987 | ||
988 | ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); | |
989 | dev_kfree_skb(beacon); | |
990 | return ret; | |
991 | } | |
992 | ||
3a3cb92e IP |
993 | struct iwl_mvm_mac_ap_iterator_data { |
994 | struct iwl_mvm *mvm; | |
995 | struct ieee80211_vif *vif; | |
996 | u32 beacon_device_ts; | |
997 | u16 beacon_int; | |
998 | }; | |
999 | ||
1000 | /* Find the beacon_device_ts and beacon_int for a managed interface */ | |
1001 | static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, | |
1002 | struct ieee80211_vif *vif) | |
1003 | { | |
1004 | struct iwl_mvm_mac_ap_iterator_data *data = _data; | |
1005 | ||
1006 | if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) | |
1007 | return; | |
1008 | ||
1009 | /* Station client has higher priority over P2P client*/ | |
1010 | if (vif->p2p && data->beacon_device_ts) | |
1011 | return; | |
1012 | ||
1013 | data->beacon_device_ts = vif->bss_conf.sync_device_ts; | |
1014 | data->beacon_int = vif->bss_conf.beacon_int; | |
1015 | } | |
1016 | ||
8ca151b5 JB |
1017 | /* |
1018 | * Fill the specific data for mac context of type AP of P2P GO | |
1019 | */ | |
1020 | static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, | |
1021 | struct ieee80211_vif *vif, | |
506a81e6 JB |
1022 | struct iwl_mac_data_ap *ctxt_ap, |
1023 | bool add) | |
8ca151b5 JB |
1024 | { |
1025 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3a3cb92e IP |
1026 | struct iwl_mvm_mac_ap_iterator_data data = { |
1027 | .mvm = mvm, | |
1028 | .vif = vif, | |
1029 | .beacon_device_ts = 0 | |
1030 | }; | |
8ca151b5 JB |
1031 | |
1032 | ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
1033 | ctxt_ap->bi_reciprocal = | |
1034 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
1035 | ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
1036 | vif->bss_conf.dtim_period); | |
1037 | ctxt_ap->dtim_reciprocal = | |
1038 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
1039 | vif->bss_conf.dtim_period)); | |
1040 | ||
1041 | ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue); | |
8ca151b5 | 1042 | |
506a81e6 | 1043 | /* |
3a3cb92e | 1044 | * Only set the beacon time when the MAC is being added, when we |
506a81e6 JB |
1045 | * just modify the MAC then we should keep the time -- the firmware |
1046 | * can otherwise have a "jumping" TBTT. | |
1047 | */ | |
3a3cb92e IP |
1048 | if (add) { |
1049 | /* | |
1050 | * If there is a station/P2P client interface which is | |
1051 | * associated, set the AP's TBTT far enough from the station's | |
1052 | * TBTT. Otherwise, set it to the current system time | |
1053 | */ | |
1054 | ieee80211_iterate_active_interfaces_atomic( | |
1055 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
1056 | iwl_mvm_mac_ap_iterator, &data); | |
1057 | ||
1058 | if (data.beacon_device_ts) { | |
9f8f8ca5 | 1059 | u32 rand = (prandom_u32() % (64 - 36)) + 36; |
3a3cb92e IP |
1060 | mvmvif->ap_beacon_time = data.beacon_device_ts + |
1061 | ieee80211_tu_to_usec(data.beacon_int * rand / | |
1062 | 100); | |
1063 | } else { | |
1064 | mvmvif->ap_beacon_time = | |
1065 | iwl_read_prph(mvm->trans, | |
1066 | DEVICE_SYSTEM_TIME_REG); | |
1067 | } | |
1068 | } | |
506a81e6 JB |
1069 | |
1070 | ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); | |
506a81e6 | 1071 | ctxt_ap->beacon_tsf = 0; /* unused */ |
8ca151b5 JB |
1072 | |
1073 | /* TODO: Assume that the beacon id == mac context id */ | |
1074 | ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); | |
1075 | } | |
1076 | ||
1077 | static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, | |
1078 | struct ieee80211_vif *vif, | |
1079 | u32 action) | |
1080 | { | |
1081 | struct iwl_mac_ctx_cmd cmd = {}; | |
1082 | ||
1083 | WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); | |
1084 | ||
1085 | /* Fill the common data for all mac context types */ | |
1086 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
1087 | ||
1dcd15ee IP |
1088 | /* Also enable probe requests to pass */ |
1089 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
1090 | ||
8ca151b5 | 1091 | /* Fill the data specific for ap mode */ |
506a81e6 JB |
1092 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap, |
1093 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 JB |
1094 | |
1095 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1096 | } | |
1097 | ||
1098 | static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, | |
1099 | struct ieee80211_vif *vif, | |
1100 | u32 action) | |
1101 | { | |
1102 | struct iwl_mac_ctx_cmd cmd = {}; | |
67baf663 | 1103 | struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; |
8ca151b5 JB |
1104 | |
1105 | WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); | |
1106 | ||
1107 | /* Fill the common data for all mac context types */ | |
1108 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
1109 | ||
1110 | /* Fill the data specific for GO mode */ | |
506a81e6 JB |
1111 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap, |
1112 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 | 1113 | |
67baf663 JD |
1114 | cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & |
1115 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
1116 | cmd.go.opp_ps_enabled = | |
1117 | cpu_to_le32(!!(noa->oppps_ctwindow & | |
1118 | IEEE80211_P2P_OPPPS_ENABLE_BIT)); | |
8ca151b5 JB |
1119 | |
1120 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1121 | } | |
1122 | ||
1123 | static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1124 | u32 action) | |
1125 | { | |
1126 | switch (vif->type) { | |
1127 | case NL80211_IFTYPE_STATION: | |
1128 | if (!vif->p2p) | |
1129 | return iwl_mvm_mac_ctxt_cmd_station(mvm, vif, | |
1130 | action); | |
1131 | else | |
1132 | return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif, | |
1133 | action); | |
1134 | break; | |
1135 | case NL80211_IFTYPE_AP: | |
1136 | if (!vif->p2p) | |
1137 | return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); | |
1138 | else | |
1139 | return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); | |
1140 | break; | |
1141 | case NL80211_IFTYPE_MONITOR: | |
1142 | return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); | |
1143 | case NL80211_IFTYPE_P2P_DEVICE: | |
1144 | return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); | |
5023d966 JB |
1145 | case NL80211_IFTYPE_ADHOC: |
1146 | return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); | |
8ca151b5 JB |
1147 | default: |
1148 | break; | |
1149 | } | |
1150 | ||
1151 | return -EOPNOTSUPP; | |
1152 | } | |
1153 | ||
1154 | int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1155 | { | |
1156 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1157 | int ret; | |
1158 | ||
1159 | if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", | |
1160 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1161 | return -EIO; | |
1162 | ||
1163 | ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD); | |
1164 | if (ret) | |
1165 | return ret; | |
1166 | ||
6d9d32b8 JB |
1167 | /* will only do anything at resume from D3 time */ |
1168 | iwl_mvm_set_last_nonqos_seq(mvm, vif); | |
1169 | ||
8ca151b5 JB |
1170 | mvmvif->uploaded = true; |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1175 | { | |
1176 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1177 | ||
1178 | if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", | |
1179 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1180 | return -EIO; | |
1181 | ||
1182 | return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY); | |
1183 | } | |
1184 | ||
1185 | int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1186 | { | |
1187 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1188 | struct iwl_mac_ctx_cmd cmd; | |
1189 | int ret; | |
1190 | ||
1191 | if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", | |
1192 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1193 | return -EIO; | |
1194 | ||
1195 | memset(&cmd, 0, sizeof(cmd)); | |
1196 | ||
1197 | cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
1198 | mvmvif->color)); | |
1199 | cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); | |
1200 | ||
1201 | ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC, | |
1202 | sizeof(cmd), &cmd); | |
1203 | if (ret) { | |
1204 | IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); | |
1205 | return ret; | |
1206 | } | |
1207 | ||
1208 | mvmvif->uploaded = false; | |
fb8b8ee1 JB |
1209 | |
1210 | if (vif->type == NL80211_IFTYPE_MONITOR) | |
1211 | mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS; | |
1212 | ||
8ca151b5 JB |
1213 | return 0; |
1214 | } | |
571765c8 IP |
1215 | |
1216 | int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, | |
1217 | struct iwl_rx_cmd_buffer *rxb, | |
1218 | struct iwl_device_cmd *cmd) | |
1219 | { | |
1220 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1221 | struct iwl_beacon_notif *beacon = (void *)pkt->data; | |
1222 | u16 status __maybe_unused = | |
1223 | le16_to_cpu(beacon->beacon_notify_hdr.status.status); | |
1224 | u32 rate __maybe_unused = | |
1225 | le32_to_cpu(beacon->beacon_notify_hdr.initial_rate); | |
1226 | ||
1227 | IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%16llX rate:%d\n", | |
1228 | status & TX_STATUS_MSK, | |
1229 | beacon->beacon_notify_hdr.failure_frame, | |
1230 | le64_to_cpu(beacon->tsf), | |
1231 | rate); | |
1232 | return 0; | |
1233 | } | |
d64048ed HG |
1234 | |
1235 | static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac, | |
1236 | struct ieee80211_vif *vif) | |
1237 | { | |
12d423e8 | 1238 | struct iwl_missed_beacons_notif *missed_beacons = _data; |
d64048ed HG |
1239 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
1240 | ||
12d423e8 IP |
1241 | if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id)) |
1242 | return; | |
1243 | ||
1244 | /* | |
1245 | * TODO: the threshold should be adjusted based on latency conditions, | |
1246 | * and/or in case of a CS flow on one of the other AP vifs. | |
1247 | */ | |
1248 | if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) > | |
1249 | IWL_MVM_MISSED_BEACONS_THRESHOLD) | |
d64048ed HG |
1250 | ieee80211_beacon_loss(vif); |
1251 | } | |
1252 | ||
1253 | int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, | |
1254 | struct iwl_rx_cmd_buffer *rxb, | |
1255 | struct iwl_device_cmd *cmd) | |
1256 | { | |
1257 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
12d423e8 IP |
1258 | struct iwl_missed_beacons_notif *mb = (void *)pkt->data; |
1259 | ||
1260 | IWL_DEBUG_INFO(mvm, | |
1261 | "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", | |
1262 | le32_to_cpu(mb->mac_id), | |
1263 | le32_to_cpu(mb->consec_missed_beacons), | |
1264 | le32_to_cpu(mb->consec_missed_beacons_since_last_rx), | |
1265 | le32_to_cpu(mb->num_recvd_beacons), | |
1266 | le32_to_cpu(mb->num_expected_beacons)); | |
d64048ed HG |
1267 | |
1268 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
1269 | IEEE80211_IFACE_ITER_NORMAL, | |
1270 | iwl_mvm_beacon_loss_iterator, | |
12d423e8 | 1271 | mb); |
d64048ed HG |
1272 | return 0; |
1273 | } |