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iwlwifi: mvm: Use beacon_get_template instead of beacon_get
[linux-2.6-block.git] / drivers / net / wireless / iwlwifi / mvm / mac-ctxt.c
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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.
8ca151b5
JB		 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 *
51368bf7 33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8ca151b5
JB		 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
71const 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
78struct 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		 88static 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);
2c3e62a1 93 u16 min_bi;
8ca151b5 94
6e97b0d2
IP		 95 /* Skip the interface for which we are trying to assign a tsf_id */
96 if (vif == data->vif)
8ca151b5 97 return;
8ca151b5
JB		 98
99 /*
100 * The TSF is a hardware/firmware resource, there are 4 and
101 * the driver should assign and free them as needed. However,
102 * there are cases where 2 MACs should share the same TSF ID
103 * for the purpose of clock sync, an optimization to avoid
104 * clock drift causing overlapping TBTTs/DTIMs for a GO and
105 * client in the system.
106 *
107 * The firmware will decide according to the MAC type which
108 * will be the master and slave. Clients that need to sync
109 * with a remote station will be the master, and an AP or GO
110 * will be the slave.
111 *
112 * Depending on the new interface type it can be slaved to
113 * or become the master of an existing interface.
114 */
115 switch (data->vif->type) {
116 case NL80211_IFTYPE_STATION:
117 /*
2c3e62a1
IP		 118 * The new interface is a client, so if the one we're iterating
119 * is an AP, and the beacon interval of the AP is a multiple or
120 * divisor of the beacon interval of the client, the same TSF
121 * should be used to avoid drift between the new client and
122 * existing AP. The existing AP will get drift updates from the
123 * new client context in this case.
8ca151b5 124 */
2c3e62a1
IP		 125 if (vif->type != NL80211_IFTYPE_AP ||
126 data->preferred_tsf != NUM_TSF_IDS ||
127 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
128 break;
129
130 min_bi = min(data->vif->bss_conf.beacon_int,
131 vif->bss_conf.beacon_int);
132
133 if (!min_bi)
134 break;
135
136 if ((data->vif->bss_conf.beacon_int -
137 vif->bss_conf.beacon_int) % min_bi == 0) {
138 data->preferred_tsf = mvmvif->tsf_id;
139 return;
8ca151b5
JB		 140 }
141 break;
2c3e62a1 142
8ca151b5
JB		 143 case NL80211_IFTYPE_AP:
144 /*
2c3e62a1
IP		 145 * The new interface is AP/GO, so if its beacon interval is a
146 * multiple or a divisor of the beacon interval of an existing
147 * interface, it should get drift updates from an existing
148 * client or use the same TSF as an existing GO. There's no
149 * drift between TSFs internally but if they used different
150 * TSFs then a new client MAC could update one of them and
151 * cause drift that way.
8ca151b5 152 */
2c3e62a1
IP		 153 if ((vif->type != NL80211_IFTYPE_AP &&
154 vif->type != NL80211_IFTYPE_STATION) ||
155 data->preferred_tsf != NUM_TSF_IDS ||
156 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
157 break;
158
159 min_bi = min(data->vif->bss_conf.beacon_int,
160 vif->bss_conf.beacon_int);
161
162 if (!min_bi)
163 break;
164
165 if ((data->vif->bss_conf.beacon_int -
166 vif->bss_conf.beacon_int) % min_bi == 0) {
167 data->preferred_tsf = mvmvif->tsf_id;
168 return;
8ca151b5
JB		 169 }
170 break;
171 default:
172 /*
173 * For all other interface types there's no need to
174 * take drift into account. Either they're exclusive
175 * like IBSS and monitor, or we don't care much about
176 * their TSF (like P2P Device), but we won't be able
177 * to share the TSF resource.
178 */
179 break;
180 }
181
182 /*
183 * Unless we exited above, we can't share the TSF resource
184 * that the virtual interface we're iterating over is using
185 * with the new one, so clear the available bit and if this
186 * was the preferred one, reset that as well.
187 */
188 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
189
190 if (data->preferred_tsf == mvmvif->tsf_id)
191 data->preferred_tsf = NUM_TSF_IDS;
192}
193
6e97b0d2
IP		 194static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
195 struct ieee80211_vif *vif)
196{
197 struct iwl_mvm_mac_iface_iterator_data *data = _data;
198 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
199 u32 ac;
200
201 /* Iterator may already find the interface being added -- skip it */
202 if (vif == data->vif) {
203 data->found_vif = true;
204 return;
205 }
206
207 /* Mark the queues used by the vif */
208 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
209 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
210 __set_bit(vif->hw_queue[ac], data->used_hw_queues);
211
212 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
213 __set_bit(vif->cab_queue, data->used_hw_queues);
214
215 /* Mark MAC IDs as used by clearing the available bit, and
216 * (below) mark TSFs as used if their existing use is not
217 * compatible with the new interface type.
218 * No locking or atomic bit operations are needed since the
219 * data is on the stack of the caller function.
220 */
221 __clear_bit(mvmvif->id, data->available_mac_ids);
222
223 /* find a suitable tsf_id */
224 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
225}
226
8ca151b5
JB		 227/*
228 * Get the mask of the queus used by the vif
229 */
230u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm,
231 struct ieee80211_vif *vif)
232{
837fb69f 233 u32 qmask = 0, ac;
8ca151b5
JB		 234
235 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
398e8c6c 236 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
8ca151b5 237
8ca151b5
JB		 238 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
239 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
240 qmask |= BIT(vif->hw_queue[ac]);
241
242 return qmask;
243}
244
6e97b0d2
IP		 245void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
246 struct ieee80211_vif *vif)
247{
248 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
249 struct iwl_mvm_mac_iface_iterator_data data = {
250 .mvm = mvm,
251 .vif = vif,
252 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
253 /* no preference yet */
254 .preferred_tsf = NUM_TSF_IDS,
255 };
256
257 ieee80211_iterate_active_interfaces_atomic(
258 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
259 iwl_mvm_mac_tsf_id_iter, &data);
260
261 if (data.preferred_tsf != NUM_TSF_IDS)
262 mvmvif->tsf_id = data.preferred_tsf;
263 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
264 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
265 NUM_TSF_IDS);
266}
267
8ca151b5
JB		 268static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
269 struct ieee80211_vif *vif)
270{
271 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
272 struct iwl_mvm_mac_iface_iterator_data data = {
273 .mvm = mvm,
274 .vif = vif,
275 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
276 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
277 /* no preference yet */
278 .preferred_tsf = NUM_TSF_IDS,
279 .used_hw_queues = {
280 BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
19e737c9 281 BIT(mvm->aux_queue) |
8ca151b5
JB		 282 BIT(IWL_MVM_CMD_QUEUE)
283 },
284 .found_vif = false,
285 };
286 u32 ac;
9ee718aa 287 int ret, i;
8ca151b5
JB		 288
289 /*
290 * Allocate a MAC ID and a TSF for this MAC, along with the queues
291 * and other resources.
292 */
293
294 /*
295 * Before the iterator, we start with all MAC IDs and TSFs available.
296 *
297 * During iteration, all MAC IDs are cleared that are in use by other
298 * virtual interfaces, and all TSF IDs are cleared that can't be used
299 * by this new virtual interface because they're used by an interface
300 * that can't share it with the new one.
301 * At the same time, we check if there's a preferred TSF in the case
302 * that we should share it with another interface.
303 */
304
5023d966
JB		 305 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
306 switch (vif->type) {
307 case NL80211_IFTYPE_ADHOC:
308 break;
309 case NL80211_IFTYPE_STATION:
310 if (!vif->p2p)
311 break;
312 /* fall through */
313 default:
ec8b6885 314 __clear_bit(0, data.available_mac_ids);
5023d966 315 }
ec8b6885 316
8ca151b5
JB		 317 ieee80211_iterate_active_interfaces_atomic(
318 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
319 iwl_mvm_mac_iface_iterator, &data);
320
321 /*
322 * In the case we're getting here during resume, it's similar to
323 * firmware restart, and with RESUME_ALL the iterator will find
324 * the vif being added already.
325 * We don't want to reassign any IDs in either case since doing
326 * so would probably assign different IDs (as interfaces aren't
327 * necessarily added in the same order), but the old IDs were
328 * preserved anyway, so skip ID assignment for both resume and
329 * recovery.
330 */
331 if (data.found_vif)
332 return 0;
333
334 /* Therefore, in recovery, we can't get here */
fd11bd05
IP		 335 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
336 return -EBUSY;
8ca151b5
JB		 337
338 mvmvif->id = find_first_bit(data.available_mac_ids,
339 NUM_MAC_INDEX_DRIVER);
340 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
341 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
342 ret = -EIO;
343 goto exit_fail;
344 }
345
346 if (data.preferred_tsf != NUM_TSF_IDS)
347 mvmvif->tsf_id = data.preferred_tsf;
348 else
349 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
350 NUM_TSF_IDS);
351 if (mvmvif->tsf_id == NUM_TSF_IDS) {
352 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
353 ret = -EIO;
354 goto exit_fail;
355 }
356
357 mvmvif->color = 0;
358
1e849c93
IP		 359 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
360 mvmvif->time_event_data.id = TE_MAX;
361
8ca151b5
JB		 362 /* No need to allocate data queues to P2P Device MAC.*/
363 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
364 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
365 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
366
367 return 0;
368 }
369
370 /* Find available queues, and allocate them to the ACs */
371 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
372 u8 queue = find_first_zero_bit(data.used_hw_queues,
19e737c9 373 mvm->first_agg_queue);
8ca151b5 374
19e737c9 375 if (queue >= mvm->first_agg_queue) {
8ca151b5
JB		 376 IWL_ERR(mvm, "Failed to allocate queue\n");
377 ret = -EIO;
378 goto exit_fail;
379 }
380
381 __set_bit(queue, data.used_hw_queues);
382 vif->hw_queue[ac] = queue;
383 }
384
385 /* Allocate the CAB queue for softAP and GO interfaces */
386 if (vif->type == NL80211_IFTYPE_AP) {
387 u8 queue = find_first_zero_bit(data.used_hw_queues,
19e737c9 388 mvm->first_agg_queue);
8ca151b5 389
19e737c9 390 if (queue >= mvm->first_agg_queue) {
8ca151b5
JB		 391 IWL_ERR(mvm, "Failed to allocate cab queue\n");
392 ret = -EIO;
393 goto exit_fail;
394 }
395
396 vif->cab_queue = queue;
397 } else {
398 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
399 }
400
401 mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
402 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
403
9ee718aa
EL		 404 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
405 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
406
8ca151b5
JB		 407 return 0;
408
409exit_fail:
410 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
411 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
412 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
413 return ret;
414}
415
416int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
417{
418 u32 ac;
419 int ret;
420
421 lockdep_assert_held(&mvm->mutex);
422
423 ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
424 if (ret)
425 return ret;
426
427 switch (vif->type) {
428 case NL80211_IFTYPE_P2P_DEVICE:
429 iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
430 IWL_MVM_TX_FIFO_VO);
431 break;
432 case NL80211_IFTYPE_AP:
433 iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue,
86a91ec7 434 IWL_MVM_TX_FIFO_MCAST);
8ca151b5
JB		 435 /* fall through */
436 default:
437 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
438 iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac],
439 iwl_mvm_ac_to_tx_fifo[ac]);
440 break;
441 }
442
443 return 0;
444}
445
446void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
447{
448 int ac;
449
450 lockdep_assert_held(&mvm->mutex);
451
452 switch (vif->type) {
453 case NL80211_IFTYPE_P2P_DEVICE:
454 iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE);
455 break;
456 case NL80211_IFTYPE_AP:
457 iwl_trans_txq_disable(mvm->trans, vif->cab_queue);
458 /* fall through */
459 default:
460 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
461 iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]);
462 }
463}
464
465static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
466 struct ieee80211_vif *vif,
467 enum ieee80211_band band,
468 u8 *cck_rates, u8 *ofdm_rates)
469{
470 struct ieee80211_supported_band *sband;
471 unsigned long basic = vif->bss_conf.basic_rates;
472 int lowest_present_ofdm = 100;
473 int lowest_present_cck = 100;
474 u8 cck = 0;
475 u8 ofdm = 0;
476 int i;
477
478 sband = mvm->hw->wiphy->bands[band];
479
480 for_each_set_bit(i, &basic, BITS_PER_LONG) {
481 int hw = sband->bitrates[i].hw_value;
482 if (hw >= IWL_FIRST_OFDM_RATE) {
483 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
484 if (lowest_present_ofdm > hw)
485 lowest_present_ofdm = hw;
486 } else {
487 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
488
489 cck |= BIT(hw);
490 if (lowest_present_cck > hw)
491 lowest_present_cck = hw;
492 }
493 }
494
495 /*
496 * Now we've got the basic rates as bitmaps in the ofdm and cck
497 * variables. This isn't sufficient though, as there might not
498 * be all the right rates in the bitmap. E.g. if the only basic
499 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
500 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
501 *
502 * [...] a STA responding to a received frame shall transmit
503 * its Control Response frame [...] at the highest rate in the
504 * BSSBasicRateSet parameter that is less than or equal to the
505 * rate of the immediately previous frame in the frame exchange
506 * sequence ([...]) and that is of the same modulation class
507 * ([...]) as the received frame. If no rate contained in the
508 * BSSBasicRateSet parameter meets these conditions, then the
509 * control frame sent in response to a received frame shall be
510 * transmitted at the highest mandatory rate of the PHY that is
511 * less than or equal to the rate of the received frame, and
512 * that is of the same modulation class as the received frame.
513 *
514 * As a consequence, we need to add all mandatory rates that are
515 * lower than all of the basic rates to these bitmaps.
516 */
517
518 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
519 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
520 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
521 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
522 /* 6M already there or needed so always add */
523 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
524
525 /*
526 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
527 * Note, however:
528 * - if no CCK rates are basic, it must be ERP since there must
529 * be some basic rates at all, so they're OFDM => ERP PHY
530 * (or we're in 5 GHz, and the cck bitmap will never be used)
531 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
532 * - if 5.5M is basic, 1M and 2M are mandatory
533 * - if 2M is basic, 1M is mandatory
534 * - if 1M is basic, that's the only valid ACK rate.
535 * As a consequence, it's not as complicated as it sounds, just add
536 * any lower rates to the ACK rate bitmap.
537 */
538 if (IWL_RATE_11M_INDEX < lowest_present_cck)
539 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
540 if (IWL_RATE_5M_INDEX < lowest_present_cck)
541 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
542 if (IWL_RATE_2M_INDEX < lowest_present_cck)
543 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
544 /* 1M already there or needed so always add */
545 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
546
547 *cck_rates = cck;
548 *ofdm_rates = ofdm;
549}
550
8a5e3660
AA		 551static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
552 struct ieee80211_vif *vif,
553 struct iwl_mac_ctx_cmd *cmd)
554{
555 /* for both sta and ap, ht_operation_mode hold the protection_mode */
556 u8 protection_mode = vif->bss_conf.ht_operation_mode &
557 IEEE80211_HT_OP_MODE_PROTECTION;
558 /* The fw does not distinguish between ht and fat */
559 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
560
561 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
562 /*
563 * See section 9.23.3.1 of IEEE 80211-2012.
564 * Nongreenfield HT STAs Present is not supported.
565 */
566 switch (protection_mode) {
567 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
568 break;
569 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
570 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
571 cmd->protection_flags |= cpu_to_le32(ht_flag);
572 break;
573 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
574 /* Protect when channel wider than 20MHz */
575 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
576 cmd->protection_flags |= cpu_to_le32(ht_flag);
577 break;
578 default:
579 IWL_ERR(mvm, "Illegal protection mode %d\n",
580 protection_mode);
581 break;
582 }
583}
584
8ca151b5
JB		 585static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
586 struct ieee80211_vif *vif,
587 struct iwl_mac_ctx_cmd *cmd,
588 u32 action)
589{
590 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
591 struct ieee80211_chanctx_conf *chanctx;
8a5e3660
AA		 592 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
593 IEEE80211_HT_OP_MODE_PROTECTION);
8ca151b5
JB		 594 u8 cck_ack_rates, ofdm_ack_rates;
595 int i;
596
597 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
598 mvmvif->color));
599 cmd->action = cpu_to_le32(action);
600
601 switch (vif->type) {
602 case NL80211_IFTYPE_STATION:
603 if (vif->p2p)
604 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
605 else
606 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
607 break;
608 case NL80211_IFTYPE_AP:
609 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
610 break;
611 case NL80211_IFTYPE_MONITOR:
612 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
613 break;
614 case NL80211_IFTYPE_P2P_DEVICE:
615 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
616 break;
617 case NL80211_IFTYPE_ADHOC:
618 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
619 break;
620 default:
621 WARN_ON_ONCE(1);
622 }
623
624 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
625
626 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
627 if (vif->bss_conf.bssid)
628 memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN);
629 else
630 eth_broadcast_addr(cmd->bssid_addr);
631
632 rcu_read_lock();
633 chanctx = rcu_dereference(vif->chanctx_conf);
634 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
635 : IEEE80211_BAND_2GHZ,
636 &cck_ack_rates, &ofdm_ack_rates);
637 rcu_read_unlock();
638
639 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
640 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
641
642 cmd->cck_short_preamble =
643 cpu_to_le32(vif->bss_conf.use_short_preamble ?
644 MAC_FLG_SHORT_PREAMBLE : 0);
645 cmd->short_slot =
646 cpu_to_le32(vif->bss_conf.use_short_slot ?
647 MAC_FLG_SHORT_SLOT : 0);
648
3dd94794
EG		 649 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
650 u8 txf = iwl_mvm_ac_to_tx_fifo[i];
651
652 cmd->ac[txf].cw_min =
653 cpu_to_le16(mvmvif->queue_params[i].cw_min);
654 cmd->ac[txf].cw_max =
655 cpu_to_le16(mvmvif->queue_params[i].cw_max);
656 cmd->ac[txf].edca_txop =
8ca151b5 657 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
3dd94794
EG		 658 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
659 cmd->ac[txf].fifos_mask = BIT(txf);
8ca151b5
JB		 660 }
661
86a91ec7
EG		 662 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
663 if (vif->type == NL80211_IFTYPE_AP)
3dd94794
EG		 664 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |=
665 BIT(IWL_MVM_TX_FIFO_MCAST);
86a91ec7 666
8ca151b5
JB		 667 if (vif->bss_conf.qos)
668 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
669
dc271ee0 670 if (vif->bss_conf.use_cts_prot)
cc7ee2ba 671 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
dc271ee0 672
8a5e3660
AA		 673 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
674 vif->bss_conf.use_cts_prot,
675 vif->bss_conf.ht_operation_mode);
676 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
8ca151b5 677 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
8a5e3660
AA		 678 if (ht_enabled)
679 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
8ca151b5
JB		 680
681 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
682}
683
684static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
685 struct iwl_mac_ctx_cmd *cmd)
686{
a1022927 687 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
8ca151b5
JB		 688 sizeof(*cmd), cmd);
689 if (ret)
690 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
691 le32_to_cpu(cmd->action), ret);
692 return ret;
693}
694
cf52023c
LC		 695static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
696 struct ieee80211_vif *vif,
697 u32 action, bool force_assoc_off)
8ca151b5 698{
cf52023c
LC		 699 struct iwl_mac_ctx_cmd cmd = {};
700 struct iwl_mac_data_sta *ctxt_sta;
701
702 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
703
704 /* Fill the common data for all mac context types */
705 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
706
707 if (vif->p2p) {
708 struct ieee80211_p2p_noa_attr *noa =
709 &vif->bss_conf.p2p_noa_attr;
710
711 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
712 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
713 ctxt_sta = &cmd.p2p_sta.sta;
714 } else {
cf52023c
LC		 715 ctxt_sta = &cmd.sta;
716 }
717
210a544e 718 /* We need the dtim_period to set the MAC as associated */
ba283927
AB		 719 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
720 !force_assoc_off) {
d2931bbd
JB		 721 u32 dtim_offs;
722
cad3f08c
LC		 723 /* Allow beacons to pass through as long as we are not
724 * associated, or we do not have dtim period information.
725 */
53446699 726 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
cad3f08c 727
d2931bbd
JB		 728 /*
729 * The DTIM count counts down, so when it is N that means N
730 * more beacon intervals happen until the DTIM TBTT. Therefore
731 * add this to the current time. If that ends up being in the
732 * future, the firmware will handle it.
733 *
734 * Also note that the system_timestamp (which we get here as
735 * "sync_device_ts") and TSF timestamp aren't at exactly the
736 * same offset in the frame -- the TSF is at the first symbol
737 * of the TSF, the system timestamp is at signal acquisition
738 * time. This means there's an offset between them of at most
739 * a few hundred microseconds (24 * 8 bits + PLCP time gives
740 * 384us in the longest case), this is currently not relevant
741 * as the firmware wakes up around 2ms before the TBTT.
742 */
743 dtim_offs = vif->bss_conf.sync_dtim_count *
744 vif->bss_conf.beacon_int;
745 /* convert TU to usecs */
746 dtim_offs *= 1024;
747
748 ctxt_sta->dtim_tsf =
749 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
750 ctxt_sta->dtim_time =
751 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
752
753 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
754 le64_to_cpu(ctxt_sta->dtim_tsf),
755 le32_to_cpu(ctxt_sta->dtim_time),
756 dtim_offs);
757
210a544e 758 ctxt_sta->is_assoc = cpu_to_le32(1);
d2931bbd 759 } else {
210a544e 760 ctxt_sta->is_assoc = cpu_to_le32(0);
d2931bbd 761 }
8ca151b5
JB		 762
763 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
764 ctxt_sta->bi_reciprocal =
765 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
766 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
767 vif->bss_conf.dtim_period);
768 ctxt_sta->dtim_reciprocal =
769 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
770 vif->bss_conf.dtim_period));
771
772 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
773 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
8ca151b5
JB		 774
775 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
776}
777
778static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
779 struct ieee80211_vif *vif,
780 u32 action)
781{
782 struct iwl_mac_ctx_cmd cmd = {};
783
784 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
785
786 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
53585495
JB		 787
788 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
789 MAC_FILTER_IN_CONTROL_AND_MGMT |
790 MAC_FILTER_IN_BEACON |
fb8b8ee1
JB		 791 MAC_FILTER_IN_PROBE_REQUEST |
792 MAC_FILTER_IN_CRC32);
793 mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
53585495 794
8ca151b5
JB		 795 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
796}
797
5023d966
JB		 798static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
799 struct ieee80211_vif *vif,
800 u32 action)
801{
802 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
803 struct iwl_mac_ctx_cmd cmd = {};
804
805 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
806
807 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
808
809 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
810 MAC_FILTER_IN_PROBE_REQUEST);
811
812 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
813 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
814 cmd.ibss.bi_reciprocal =
815 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
816
817 /* TODO: Assumes that the beacon id == mac context id */
818 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
819
820 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
821}
822
8ca151b5
JB		 823struct iwl_mvm_go_iterator_data {
824 bool go_active;
825};
826
827static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
828{
829 struct iwl_mvm_go_iterator_data *data = _data;
830 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
831
5023d966
JB		 832 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
833 mvmvif->ap_ibss_active)
8ca151b5
JB		 834 data->go_active = true;
835}
836
837static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
838 struct ieee80211_vif *vif,
839 u32 action)
840{
841 struct iwl_mac_ctx_cmd cmd = {};
842 struct iwl_mvm_go_iterator_data data = {};
843
844 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
845
846 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
847
848 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
1dcd15ee
IP		 849
850 /* Override the filter flags to accept only probe requests */
851 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
8ca151b5
JB		 852
853 /*
854 * This flag should be set to true when the P2P Device is
855 * discoverable and there is at least another active P2P GO. Settings
856 * this flag will allow the P2P Device to be discoverable on other
857 * channels in addition to its listen channel.
858 * Note that this flag should not be set in other cases as it opens the
859 * Rx filters on all MAC and increases the number of interrupts.
860 */
861 ieee80211_iterate_active_interfaces_atomic(
862 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
863 iwl_mvm_go_iterator, &data);
864
865 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
866 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
867}
868
869static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
870 struct iwl_mac_beacon_cmd *beacon_cmd,
871 u8 *beacon, u32 frame_size)
872{
873 u32 tim_idx;
874 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
875
876 /* The index is relative to frame start but we start looking at the
877 * variable-length part of the beacon. */
878 tim_idx = mgmt->u.beacon.variable - beacon;
879
880 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
881 while ((tim_idx < (frame_size - 2)) &&
882 (beacon[tim_idx] != WLAN_EID_TIM))
883 tim_idx += beacon[tim_idx+1] + 2;
884
885 /* If TIM field was found, set variables */
886 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
887 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
888 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
889 } else {
890 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
891 }
892}
893
894static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
895 struct ieee80211_vif *vif,
896 struct sk_buff *beacon)
897{
898 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
899 struct iwl_host_cmd cmd = {
900 .id = BEACON_TEMPLATE_CMD,
901 .flags = CMD_ASYNC,
902 };
903 struct iwl_mac_beacon_cmd beacon_cmd = {};
904 struct ieee80211_tx_info *info;
905 u32 beacon_skb_len;
75f6b9b6 906 u32 rate, tx_flags;
8ca151b5
JB		 907
908 if (WARN_ON(!beacon))
909 return -EINVAL;
910
911 beacon_skb_len = beacon->len;
912
913 /* TODO: for now the beacon template id is set to be the mac context id.
914 * Might be better to handle it as another resource ... */
915 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
75f6b9b6 916 info = IEEE80211_SKB_CB(beacon);
8ca151b5
JB		 917
918 /* Set up TX command fields */
919 beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
920 beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
921 beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
75f6b9b6
EG		 922 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
923 tx_flags |=
924 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
925 TX_CMD_FLG_BT_PRIO_POS;
926 beacon_cmd.tx.tx_flags = cpu_to_le32(tx_flags);
8ca151b5
JB		 927
928 mvm->mgmt_last_antenna_idx =
4ed735e7 929 iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant,
8ca151b5
JB		 930 mvm->mgmt_last_antenna_idx);
931
932 beacon_cmd.tx.rate_n_flags =
933 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
934 RATE_MCS_ANT_POS);
935
8ca151b5
JB		 936 if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
937 rate = IWL_FIRST_OFDM_RATE;
938 } else {
939 rate = IWL_FIRST_CCK_RATE;
940 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
941 }
942 beacon_cmd.tx.rate_n_flags |=
943 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
944
945 /* Set up TX beacon command fields */
5023d966
JB		 946 if (vif->type == NL80211_IFTYPE_AP)
947 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
948 beacon->data,
949 beacon_skb_len);
8ca151b5
JB		 950
951 /* Submit command */
952 cmd.len[0] = sizeof(beacon_cmd);
953 cmd.data[0] = &beacon_cmd;
954 cmd.dataflags[0] = 0;
955 cmd.len[1] = beacon_skb_len;
956 cmd.data[1] = beacon->data;
957 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
958
959 return iwl_mvm_send_cmd(mvm, &cmd);
960}
961
5023d966 962/* The beacon template for the AP/GO/IBSS has changed and needs update */
8ca151b5
JB		 963int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
964 struct ieee80211_vif *vif)
965{
966 struct sk_buff *beacon;
967 int ret;
968
5023d966
JB		 969 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
970 vif->type != NL80211_IFTYPE_ADHOC);
8ca151b5 971
fe887665 972 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
8ca151b5
JB		 973 if (!beacon)
974 return -ENOMEM;
975
976 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
977 dev_kfree_skb(beacon);
978 return ret;
979}
980
3a3cb92e
IP		 981struct iwl_mvm_mac_ap_iterator_data {
982 struct iwl_mvm *mvm;
983 struct ieee80211_vif *vif;
984 u32 beacon_device_ts;
985 u16 beacon_int;
986};
987
988/* Find the beacon_device_ts and beacon_int for a managed interface */
989static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
990 struct ieee80211_vif *vif)
991{
992 struct iwl_mvm_mac_ap_iterator_data *data = _data;
993
994 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
995 return;
996
997 /* Station client has higher priority over P2P client*/
998 if (vif->p2p && data->beacon_device_ts)
999 return;
1000
1001 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1002 data->beacon_int = vif->bss_conf.beacon_int;
1003}
1004
8ca151b5
JB		 1005/*
1006 * Fill the specific data for mac context of type AP of P2P GO
1007 */
1008static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1009 struct ieee80211_vif *vif,
506a81e6
JB		 1010 struct iwl_mac_data_ap *ctxt_ap,
1011 bool add)
8ca151b5
JB		 1012{
1013 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3a3cb92e
IP		 1014 struct iwl_mvm_mac_ap_iterator_data data = {
1015 .mvm = mvm,
1016 .vif = vif,
1017 .beacon_device_ts = 0
1018 };
8ca151b5
JB		 1019
1020 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1021 ctxt_ap->bi_reciprocal =
1022 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
1023 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1024 vif->bss_conf.dtim_period);
1025 ctxt_ap->dtim_reciprocal =
1026 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
1027 vif->bss_conf.dtim_period));
1028
1029 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
8ca151b5 1030
506a81e6 1031 /*
3a3cb92e 1032 * Only set the beacon time when the MAC is being added, when we
506a81e6
JB		 1033 * just modify the MAC then we should keep the time -- the firmware
1034 * can otherwise have a "jumping" TBTT.
1035 */
3a3cb92e
IP		 1036 if (add) {
1037 /*
1038 * If there is a station/P2P client interface which is
1039 * associated, set the AP's TBTT far enough from the station's
1040 * TBTT. Otherwise, set it to the current system time
1041 */
1042 ieee80211_iterate_active_interfaces_atomic(
1043 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1044 iwl_mvm_mac_ap_iterator, &data);
1045
1046 if (data.beacon_device_ts) {
9f8f8ca5 1047 u32 rand = (prandom_u32() % (64 - 36)) + 36;
3a3cb92e
IP		 1048 mvmvif->ap_beacon_time = data.beacon_device_ts +
1049 ieee80211_tu_to_usec(data.beacon_int * rand /
1050 100);
1051 } else {
1052 mvmvif->ap_beacon_time =
1053 iwl_read_prph(mvm->trans,
1054 DEVICE_SYSTEM_TIME_REG);
1055 }
1056 }
506a81e6
JB		 1057
1058 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
506a81e6 1059 ctxt_ap->beacon_tsf = 0; /* unused */
8ca151b5
JB		 1060
1061 /* TODO: Assume that the beacon id == mac context id */
1062 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1063}
1064
1065static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1066 struct ieee80211_vif *vif,
1067 u32 action)
1068{
1069 struct iwl_mac_ctx_cmd cmd = {};
1070
1071 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1072
1073 /* Fill the common data for all mac context types */
1074 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
1075
1dcd15ee
IP		 1076 /* Also enable probe requests to pass */
1077 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
1078
8ca151b5 1079 /* Fill the data specific for ap mode */
506a81e6
JB		 1080 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
1081 action == FW_CTXT_ACTION_ADD);
8ca151b5
JB		 1082
1083 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1084}
1085
1086static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1087 struct ieee80211_vif *vif,
1088 u32 action)
1089{
1090 struct iwl_mac_ctx_cmd cmd = {};
67baf663 1091 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
8ca151b5
JB		 1092
1093 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1094
1095 /* Fill the common data for all mac context types */
1096 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
1097
1098 /* Fill the data specific for GO mode */
506a81e6
JB		 1099 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
1100 action == FW_CTXT_ACTION_ADD);
8ca151b5 1101
67baf663
JD		 1102 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1103 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1104 cmd.go.opp_ps_enabled =
1105 cpu_to_le32(!!(noa->oppps_ctwindow &
1106 IEEE80211_P2P_OPPPS_ENABLE_BIT));
8ca151b5
JB		 1107
1108 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1109}
1110
1111static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
bca49d9a 1112 u32 action, bool force_assoc_off)
8ca151b5
JB		 1113{
1114 switch (vif->type) {
1115 case NL80211_IFTYPE_STATION:
cf52023c 1116 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
bca49d9a 1117 force_assoc_off);
8ca151b5
JB		 1118 break;
1119 case NL80211_IFTYPE_AP:
1120 if (!vif->p2p)
1121 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1122 else
1123 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1124 break;
1125 case NL80211_IFTYPE_MONITOR:
1126 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1127 case NL80211_IFTYPE_P2P_DEVICE:
1128 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
5023d966
JB		 1129 case NL80211_IFTYPE_ADHOC:
1130 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
8ca151b5
JB		 1131 default:
1132 break;
1133 }
1134
1135 return -EOPNOTSUPP;
1136}
1137
1138int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1139{
1140 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1141 int ret;
1142
1143 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1144 vif->addr, ieee80211_vif_type_p2p(vif)))
1145 return -EIO;
1146
bca49d9a
LC		 1147 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1148 true);
8ca151b5
JB		 1149 if (ret)
1150 return ret;
1151
6d9d32b8
JB		 1152 /* will only do anything at resume from D3 time */
1153 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1154
8ca151b5
JB		 1155 mvmvif->uploaded = true;
1156 return 0;
1157}
1158
bca49d9a
LC		 1159int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1160 bool force_assoc_off)
8ca151b5
JB		 1161{
1162 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1163
1164 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1165 vif->addr, ieee80211_vif_type_p2p(vif)))
1166 return -EIO;
1167
bca49d9a
LC		 1168 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1169 force_assoc_off);
8ca151b5
JB		 1170}
1171
1172int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1173{
1174 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1175 struct iwl_mac_ctx_cmd cmd;
1176 int ret;
1177
1178 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1179 vif->addr, ieee80211_vif_type_p2p(vif)))
1180 return -EIO;
1181
1182 memset(&cmd, 0, sizeof(cmd));
1183
1184 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1185 mvmvif->color));
1186 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1187
a1022927 1188 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
8ca151b5
JB		 1189 sizeof(cmd), &cmd);
1190 if (ret) {
1191 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1192 return ret;
1193 }
1194
1195 mvmvif->uploaded = false;
fb8b8ee1
JB		 1196
1197 if (vif->type == NL80211_IFTYPE_MONITOR)
1198 mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1199
8ca151b5
JB		 1200 return 0;
1201}
571765c8
IP		 1202
1203int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1204 struct iwl_rx_cmd_buffer *rxb,
1205 struct iwl_device_cmd *cmd)
1206{
1207 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1c87bbad
DS		 1208 struct iwl_mvm_tx_resp *beacon_notify_hdr;
1209 u64 tsf;
571765c8 1210
bd3398e2
AO		 1211 lockdep_assert_held(&mvm->mutex);
1212
1c87bbad
DS		 1213 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_CAPA_EXTENDED_BEACON) {
1214 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1215
1216 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1217 tsf = le64_to_cpu(beacon->tsf);
1218 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1219 } else {
1220 struct iwl_beacon_notif *beacon = (void *)pkt->data;
1221
1222 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1223 tsf = le64_to_cpu(beacon->tsf);
1224 }
1225
1226 IWL_DEBUG_RX(mvm,
1227 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1228 le16_to_cpu(beacon_notify_hdr->status.status) &
1229 TX_STATUS_MSK,
1230 beacon_notify_hdr->failure_frame, tsf,
1231 mvm->ap_last_beacon_gp2,
1232 le32_to_cpu(beacon_notify_hdr->initial_rate));
bd3398e2
AO		 1233
1234 if (unlikely(mvm->csa_vif && mvm->csa_vif->csa_active)) {
1235 if (!ieee80211_csa_is_complete(mvm->csa_vif)) {
fe887665 1236 ieee80211_csa_update_counter(mvm->csa_vif);
bd3398e2
AO		 1237 iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm->csa_vif);
1238 } else {
1239 ieee80211_csa_finish(mvm->csa_vif);
1240 mvm->csa_vif = NULL;
1241 }
1242 }
1243
571765c8
IP		 1244 return 0;
1245}
d64048ed
HG		 1246
1247static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
1248 struct ieee80211_vif *vif)
1249{
12d423e8 1250 struct iwl_missed_beacons_notif *missed_beacons = _data;
d64048ed
HG		 1251 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1252
12d423e8
IP		 1253 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
1254 return;
1255
1256 /*
1257 * TODO: the threshold should be adjusted based on latency conditions,
1258 * and/or in case of a CS flow on one of the other AP vifs.
1259 */
1260 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
1261 IWL_MVM_MISSED_BEACONS_THRESHOLD)
d64048ed
HG		 1262 ieee80211_beacon_loss(vif);
1263}
1264
1265int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1266 struct iwl_rx_cmd_buffer *rxb,
1267 struct iwl_device_cmd *cmd)
1268{
1269 struct iwl_rx_packet *pkt = rxb_addr(rxb);
12d423e8
IP		 1270 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1271
1272 IWL_DEBUG_INFO(mvm,
1273 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1274 le32_to_cpu(mb->mac_id),
1275 le32_to_cpu(mb->consec_missed_beacons),
1276 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1277 le32_to_cpu(mb->num_recvd_beacons),
1278 le32_to_cpu(mb->num_expected_beacons));
d64048ed
HG		 1279
1280 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1281 IEEE80211_IFACE_ITER_NORMAL,
1282 iwl_mvm_beacon_loss_iterator,
12d423e8 1283 mb);
d64048ed
HG		 1284 return 0;
1285}
Linux 6.x block layer and io_uring tree(s)