1 /******************************************************************************
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.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
38 * All rights reserved.
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
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47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 *****************************************************************************/
68 #include <linux/etherdevice.h>
69 #include <net/mac80211.h>
74 #include "time-event.h"
76 const u8 iwl_mvm_ac_to_tx_fifo[] = {
83 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = {
84 IWL_GEN2_EDCA_TX_FIFO_VO,
85 IWL_GEN2_EDCA_TX_FIFO_VI,
86 IWL_GEN2_EDCA_TX_FIFO_BE,
87 IWL_GEN2_EDCA_TX_FIFO_BK,
90 struct iwl_mvm_mac_iface_iterator_data {
92 struct ieee80211_vif *vif;
93 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
94 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
95 enum iwl_tsf_id preferred_tsf;
99 struct iwl_mvm_hw_queues_iface_iterator_data {
100 struct ieee80211_vif *exclude_vif;
101 unsigned long used_hw_queues;
104 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
105 struct ieee80211_vif *vif)
107 struct iwl_mvm_mac_iface_iterator_data *data = _data;
108 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
111 /* Skip the interface for which we are trying to assign a tsf_id */
112 if (vif == data->vif)
116 * The TSF is a hardware/firmware resource, there are 4 and
117 * the driver should assign and free them as needed. However,
118 * there are cases where 2 MACs should share the same TSF ID
119 * for the purpose of clock sync, an optimization to avoid
120 * clock drift causing overlapping TBTTs/DTIMs for a GO and
121 * client in the system.
123 * The firmware will decide according to the MAC type which
124 * will be the master and slave. Clients that need to sync
125 * with a remote station will be the master, and an AP or GO
128 * Depending on the new interface type it can be slaved to
129 * or become the master of an existing interface.
131 switch (data->vif->type) {
132 case NL80211_IFTYPE_STATION:
134 * The new interface is a client, so if the one we're iterating
135 * is an AP, and the beacon interval of the AP is a multiple or
136 * divisor of the beacon interval of the client, the same TSF
137 * should be used to avoid drift between the new client and
138 * existing AP. The existing AP will get drift updates from the
139 * new client context in this case.
141 if (vif->type != NL80211_IFTYPE_AP ||
142 data->preferred_tsf != NUM_TSF_IDS ||
143 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
146 min_bi = min(data->vif->bss_conf.beacon_int,
147 vif->bss_conf.beacon_int);
152 if ((data->vif->bss_conf.beacon_int -
153 vif->bss_conf.beacon_int) % min_bi == 0) {
154 data->preferred_tsf = mvmvif->tsf_id;
159 case NL80211_IFTYPE_AP:
161 * The new interface is AP/GO, so if its beacon interval is a
162 * multiple or a divisor of the beacon interval of an existing
163 * interface, it should get drift updates from an existing
164 * client or use the same TSF as an existing GO. There's no
165 * drift between TSFs internally but if they used different
166 * TSFs then a new client MAC could update one of them and
167 * cause drift that way.
169 if ((vif->type != NL80211_IFTYPE_AP &&
170 vif->type != NL80211_IFTYPE_STATION) ||
171 data->preferred_tsf != NUM_TSF_IDS ||
172 !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
175 min_bi = min(data->vif->bss_conf.beacon_int,
176 vif->bss_conf.beacon_int);
181 if ((data->vif->bss_conf.beacon_int -
182 vif->bss_conf.beacon_int) % min_bi == 0) {
183 data->preferred_tsf = mvmvif->tsf_id;
189 * For all other interface types there's no need to
190 * take drift into account. Either they're exclusive
191 * like IBSS and monitor, or we don't care much about
192 * their TSF (like P2P Device), but we won't be able
193 * to share the TSF resource.
199 * Unless we exited above, we can't share the TSF resource
200 * that the virtual interface we're iterating over is using
201 * with the new one, so clear the available bit and if this
202 * was the preferred one, reset that as well.
204 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
206 if (data->preferred_tsf == mvmvif->tsf_id)
207 data->preferred_tsf = NUM_TSF_IDS;
211 * Get the mask of the queues used by the vif
213 u32 iwl_mvm_mac_get_queues_mask(struct ieee80211_vif *vif)
217 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
218 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
220 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
221 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
222 qmask |= BIT(vif->hw_queue[ac]);
225 if (vif->type == NL80211_IFTYPE_AP ||
226 vif->type == NL80211_IFTYPE_ADHOC)
227 qmask |= BIT(vif->cab_queue);
232 static void iwl_mvm_iface_hw_queues_iter(void *_data, u8 *mac,
233 struct ieee80211_vif *vif)
235 struct iwl_mvm_hw_queues_iface_iterator_data *data = _data;
237 /* exclude the given vif */
238 if (vif == data->exclude_vif)
241 data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(vif);
244 unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm *mvm,
245 struct ieee80211_vif *exclude_vif)
247 struct iwl_mvm_hw_queues_iface_iterator_data data = {
248 .exclude_vif = exclude_vif,
250 BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
251 BIT(mvm->aux_queue) |
252 BIT(IWL_MVM_DQA_GCAST_QUEUE),
255 lockdep_assert_held(&mvm->mutex);
257 /* mark all VIF used hw queues */
258 ieee80211_iterate_active_interfaces_atomic(
259 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
260 iwl_mvm_iface_hw_queues_iter, &data);
262 return data.used_hw_queues;
265 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
266 struct ieee80211_vif *vif)
268 struct iwl_mvm_mac_iface_iterator_data *data = _data;
269 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
271 /* Iterator may already find the interface being added -- skip it */
272 if (vif == data->vif) {
273 data->found_vif = true;
277 /* Mark MAC IDs as used by clearing the available bit, and
278 * (below) mark TSFs as used if their existing use is not
279 * compatible with the new interface type.
280 * No locking or atomic bit operations are needed since the
281 * data is on the stack of the caller function.
283 __clear_bit(mvmvif->id, data->available_mac_ids);
285 /* find a suitable tsf_id */
286 iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
289 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
290 struct ieee80211_vif *vif)
292 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
293 struct iwl_mvm_mac_iface_iterator_data data = {
296 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
297 /* no preference yet */
298 .preferred_tsf = NUM_TSF_IDS,
301 ieee80211_iterate_active_interfaces_atomic(
302 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
303 iwl_mvm_mac_tsf_id_iter, &data);
305 if (data.preferred_tsf != NUM_TSF_IDS)
306 mvmvif->tsf_id = data.preferred_tsf;
307 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
308 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
312 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
314 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
315 struct iwl_mvm_mac_iface_iterator_data data = {
318 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
319 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
320 /* no preference yet */
321 .preferred_tsf = NUM_TSF_IDS,
325 int ret, i, queue_limit;
326 unsigned long used_hw_queues;
328 lockdep_assert_held(&mvm->mutex);
331 * Allocate a MAC ID and a TSF for this MAC, along with the queues
332 * and other resources.
336 * Before the iterator, we start with all MAC IDs and TSFs available.
338 * During iteration, all MAC IDs are cleared that are in use by other
339 * virtual interfaces, and all TSF IDs are cleared that can't be used
340 * by this new virtual interface because they're used by an interface
341 * that can't share it with the new one.
342 * At the same time, we check if there's a preferred TSF in the case
343 * that we should share it with another interface.
346 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
348 case NL80211_IFTYPE_ADHOC:
350 case NL80211_IFTYPE_STATION:
355 __clear_bit(0, data.available_mac_ids);
358 ieee80211_iterate_active_interfaces_atomic(
359 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
360 iwl_mvm_mac_iface_iterator, &data);
362 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, vif);
365 * In the case we're getting here during resume, it's similar to
366 * firmware restart, and with RESUME_ALL the iterator will find
367 * the vif being added already.
368 * We don't want to reassign any IDs in either case since doing
369 * so would probably assign different IDs (as interfaces aren't
370 * necessarily added in the same order), but the old IDs were
371 * preserved anyway, so skip ID assignment for both resume and
377 /* Therefore, in recovery, we can't get here */
378 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
381 mvmvif->id = find_first_bit(data.available_mac_ids,
382 NUM_MAC_INDEX_DRIVER);
383 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
384 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
389 if (data.preferred_tsf != NUM_TSF_IDS)
390 mvmvif->tsf_id = data.preferred_tsf;
392 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
394 if (mvmvif->tsf_id == NUM_TSF_IDS) {
395 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
402 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
403 mvmvif->time_event_data.id = TE_MAX;
405 /* No need to allocate data queues to P2P Device MAC.*/
406 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
407 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
408 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
414 * queues in mac80211 almost entirely independent of
415 * the ones here - no real limit
417 queue_limit = IEEE80211_MAX_QUEUES;
418 BUILD_BUG_ON(IEEE80211_MAX_QUEUES >
420 sizeof(mvm->hw_queue_to_mac80211[0]));
423 * Find available queues, and allocate them to the ACs. When in
424 * DQA-mode they aren't really used, and this is done only so the
425 * mac80211 ieee80211_check_queues() function won't fail
427 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
428 u8 queue = find_first_zero_bit(&used_hw_queues, queue_limit);
430 if (queue >= queue_limit) {
431 IWL_ERR(mvm, "Failed to allocate queue\n");
436 __set_bit(queue, &used_hw_queues);
437 vif->hw_queue[ac] = queue;
440 /* Allocate the CAB queue for softAP and GO interfaces */
441 if (vif->type == NL80211_IFTYPE_AP ||
442 vif->type == NL80211_IFTYPE_ADHOC) {
444 * For TVQM this will be overwritten later with the FW assigned
445 * queue value (when queue is enabled).
447 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
448 vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
450 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
453 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA;
454 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA;
455 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
457 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
458 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
463 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
464 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
465 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
469 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
470 struct ieee80211_vif *vif,
471 enum nl80211_band band,
472 u8 *cck_rates, u8 *ofdm_rates)
474 struct ieee80211_supported_band *sband;
475 unsigned long basic = vif->bss_conf.basic_rates;
476 int lowest_present_ofdm = 100;
477 int lowest_present_cck = 100;
482 sband = mvm->hw->wiphy->bands[band];
484 for_each_set_bit(i, &basic, BITS_PER_LONG) {
485 int hw = sband->bitrates[i].hw_value;
486 if (hw >= IWL_FIRST_OFDM_RATE) {
487 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
488 if (lowest_present_ofdm > hw)
489 lowest_present_ofdm = hw;
491 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
494 if (lowest_present_cck > hw)
495 lowest_present_cck = hw;
500 * Now we've got the basic rates as bitmaps in the ofdm and cck
501 * variables. This isn't sufficient though, as there might not
502 * be all the right rates in the bitmap. E.g. if the only basic
503 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
504 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
506 * [...] a STA responding to a received frame shall transmit
507 * its Control Response frame [...] at the highest rate in the
508 * BSSBasicRateSet parameter that is less than or equal to the
509 * rate of the immediately previous frame in the frame exchange
510 * sequence ([...]) and that is of the same modulation class
511 * ([...]) as the received frame. If no rate contained in the
512 * BSSBasicRateSet parameter meets these conditions, then the
513 * control frame sent in response to a received frame shall be
514 * transmitted at the highest mandatory rate of the PHY that is
515 * less than or equal to the rate of the received frame, and
516 * that is of the same modulation class as the received frame.
518 * As a consequence, we need to add all mandatory rates that are
519 * lower than all of the basic rates to these bitmaps.
522 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
523 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
524 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
525 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
526 /* 6M already there or needed so always add */
527 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
530 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
532 * - if no CCK rates are basic, it must be ERP since there must
533 * be some basic rates at all, so they're OFDM => ERP PHY
534 * (or we're in 5 GHz, and the cck bitmap will never be used)
535 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
536 * - if 5.5M is basic, 1M and 2M are mandatory
537 * - if 2M is basic, 1M is mandatory
538 * - if 1M is basic, that's the only valid ACK rate.
539 * As a consequence, it's not as complicated as it sounds, just add
540 * any lower rates to the ACK rate bitmap.
542 if (IWL_RATE_11M_INDEX < lowest_present_cck)
543 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
544 if (IWL_RATE_5M_INDEX < lowest_present_cck)
545 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
546 if (IWL_RATE_2M_INDEX < lowest_present_cck)
547 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
548 /* 1M already there or needed so always add */
549 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
555 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
556 struct ieee80211_vif *vif,
557 struct iwl_mac_ctx_cmd *cmd)
559 /* for both sta and ap, ht_operation_mode hold the protection_mode */
560 u8 protection_mode = vif->bss_conf.ht_operation_mode &
561 IEEE80211_HT_OP_MODE_PROTECTION;
562 /* The fw does not distinguish between ht and fat */
563 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
565 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
567 * See section 9.23.3.1 of IEEE 80211-2012.
568 * Nongreenfield HT STAs Present is not supported.
570 switch (protection_mode) {
571 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
573 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
574 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
575 cmd->protection_flags |= cpu_to_le32(ht_flag);
577 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
578 /* Protect when channel wider than 20MHz */
579 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
580 cmd->protection_flags |= cpu_to_le32(ht_flag);
583 IWL_ERR(mvm, "Illegal protection mode %d\n",
589 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
590 struct ieee80211_vif *vif,
591 struct iwl_mac_ctx_cmd *cmd,
592 const u8 *bssid_override,
595 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
596 struct ieee80211_chanctx_conf *chanctx;
597 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
598 IEEE80211_HT_OP_MODE_PROTECTION);
599 u8 cck_ack_rates, ofdm_ack_rates;
600 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
603 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
605 cmd->action = cpu_to_le32(action);
608 case NL80211_IFTYPE_STATION:
610 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
612 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
614 case NL80211_IFTYPE_AP:
615 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
617 case NL80211_IFTYPE_MONITOR:
618 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
620 case NL80211_IFTYPE_P2P_DEVICE:
621 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
623 case NL80211_IFTYPE_ADHOC:
624 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
630 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
632 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
635 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
637 eth_broadcast_addr(cmd->bssid_addr);
640 chanctx = rcu_dereference(vif->chanctx_conf);
641 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
643 &cck_ack_rates, &ofdm_ack_rates);
646 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
647 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
649 cmd->cck_short_preamble =
650 cpu_to_le32(vif->bss_conf.use_short_preamble ?
651 MAC_FLG_SHORT_PREAMBLE : 0);
653 cpu_to_le32(vif->bss_conf.use_short_slot ?
654 MAC_FLG_SHORT_SLOT : 0);
656 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
658 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
659 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
661 cmd->ac[txf].cw_min =
662 cpu_to_le16(mvmvif->queue_params[i].cw_min);
663 cmd->ac[txf].cw_max =
664 cpu_to_le16(mvmvif->queue_params[i].cw_max);
665 cmd->ac[txf].edca_txop =
666 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
667 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
668 cmd->ac[txf].fifos_mask = BIT(txf);
671 if (vif->bss_conf.qos)
672 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
674 if (vif->bss_conf.use_cts_prot)
675 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
677 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
678 vif->bss_conf.use_cts_prot,
679 vif->bss_conf.ht_operation_mode);
680 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
681 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
683 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
686 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
687 struct iwl_mac_ctx_cmd *cmd)
689 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
692 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
693 le32_to_cpu(cmd->action), ret);
697 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
698 struct ieee80211_vif *vif,
699 u32 action, bool force_assoc_off,
700 const u8 *bssid_override)
702 struct iwl_mac_ctx_cmd cmd = {};
703 struct iwl_mac_data_sta *ctxt_sta;
705 WARN_ON(vif->type != NL80211_IFTYPE_STATION);
707 /* Fill the common data for all mac context types */
708 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
711 struct ieee80211_p2p_noa_attr *noa =
712 &vif->bss_conf.p2p_noa_attr;
714 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
715 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
716 ctxt_sta = &cmd.p2p_sta.sta;
721 /* We need the dtim_period to set the MAC as associated */
722 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
727 * The DTIM count counts down, so when it is N that means N
728 * more beacon intervals happen until the DTIM TBTT. Therefore
729 * add this to the current time. If that ends up being in the
730 * future, the firmware will handle it.
732 * Also note that the system_timestamp (which we get here as
733 * "sync_device_ts") and TSF timestamp aren't at exactly the
734 * same offset in the frame -- the TSF is at the first symbol
735 * of the TSF, the system timestamp is at signal acquisition
736 * time. This means there's an offset between them of at most
737 * a few hundred microseconds (24 * 8 bits + PLCP time gives
738 * 384us in the longest case), this is currently not relevant
739 * as the firmware wakes up around 2ms before the TBTT.
741 dtim_offs = vif->bss_conf.sync_dtim_count *
742 vif->bss_conf.beacon_int;
743 /* convert TU to usecs */
747 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
748 ctxt_sta->dtim_time =
749 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
750 ctxt_sta->assoc_beacon_arrive_time =
751 cpu_to_le32(vif->bss_conf.sync_device_ts);
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),
758 ctxt_sta->is_assoc = cpu_to_le32(1);
760 ctxt_sta->is_assoc = cpu_to_le32(0);
762 /* Allow beacons to pass through as long as we are not
763 * associated, or we do not have dtim period information.
765 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
768 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
769 ctxt_sta->bi_reciprocal =
770 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
771 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
772 vif->bss_conf.dtim_period);
773 ctxt_sta->dtim_reciprocal =
774 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
775 vif->bss_conf.dtim_period));
777 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
778 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
780 if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p)
781 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
783 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
786 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
787 struct ieee80211_vif *vif,
790 struct iwl_mac_ctx_cmd cmd = {};
791 u32 tfd_queue_msk = BIT(mvm->snif_queue);
794 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
796 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
798 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
799 MAC_FILTER_IN_CONTROL_AND_MGMT |
800 MAC_FILTER_IN_BEACON |
801 MAC_FILTER_IN_PROBE_REQUEST |
802 MAC_FILTER_IN_CRC32);
803 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
805 /* Allocate sniffer station */
806 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
807 vif->type, IWL_STA_GENERAL_PURPOSE);
811 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
814 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
815 struct ieee80211_vif *vif,
818 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
819 struct iwl_mac_ctx_cmd cmd = {};
821 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
823 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
825 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
826 MAC_FILTER_IN_PROBE_REQUEST);
828 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
829 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
830 cmd.ibss.bi_reciprocal =
831 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
833 /* TODO: Assumes that the beacon id == mac context id */
834 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
836 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
839 struct iwl_mvm_go_iterator_data {
843 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
845 struct iwl_mvm_go_iterator_data *data = _data;
846 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
848 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
849 mvmvif->ap_ibss_active)
850 data->go_active = true;
853 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
854 struct ieee80211_vif *vif,
857 struct iwl_mac_ctx_cmd cmd = {};
858 struct iwl_mvm_go_iterator_data data = {};
860 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
862 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
864 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
866 /* Override the filter flags to accept only probe requests */
867 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
870 * This flag should be set to true when the P2P Device is
871 * discoverable and there is at least another active P2P GO. Settings
872 * this flag will allow the P2P Device to be discoverable on other
873 * channels in addition to its listen channel.
874 * Note that this flag should not be set in other cases as it opens the
875 * Rx filters on all MAC and increases the number of interrupts.
877 ieee80211_iterate_active_interfaces_atomic(
878 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
879 iwl_mvm_go_iterator, &data);
881 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
882 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
885 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
886 __le32 *tim_index, __le32 *tim_size,
887 u8 *beacon, u32 frame_size)
890 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
892 /* The index is relative to frame start but we start looking at the
893 * variable-length part of the beacon. */
894 tim_idx = mgmt->u.beacon.variable - beacon;
896 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
897 while ((tim_idx < (frame_size - 2)) &&
898 (beacon[tim_idx] != WLAN_EID_TIM))
899 tim_idx += beacon[tim_idx+1] + 2;
901 /* If TIM field was found, set variables */
902 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
903 *tim_index = cpu_to_le32(tim_idx);
904 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
906 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
910 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
912 struct ieee80211_mgmt *mgmt = (void *)beacon;
915 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
918 frame_size -= mgmt->u.beacon.variable - beacon;
920 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
927 static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info,
928 struct ieee80211_vif *vif)
932 if (info->band == NL80211_BAND_5GHZ || vif->p2p)
933 rate = IWL_FIRST_OFDM_RATE;
935 rate = IWL_FIRST_CCK_RATE;
940 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
941 struct ieee80211_vif *vif,
942 struct sk_buff *beacon,
943 struct iwl_tx_cmd *tx)
945 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
946 struct ieee80211_tx_info *info;
950 info = IEEE80211_SKB_CB(beacon);
952 /* Set up TX command fields */
953 tx->len = cpu_to_le16((u16)beacon->len);
954 tx->sta_id = mvmvif->bcast_sta.sta_id;
955 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
956 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
958 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
959 TX_CMD_FLG_BT_PRIO_POS;
960 tx->tx_flags = cpu_to_le32(tx_flags);
962 if (!fw_has_capa(&mvm->fw->ucode_capa,
963 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) {
964 mvm->mgmt_last_antenna_idx =
965 iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
966 mvm->mgmt_last_antenna_idx);
970 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
973 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
975 tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
976 if (rate == IWL_FIRST_CCK_RATE)
977 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
981 static int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
982 struct sk_buff *beacon,
985 struct iwl_host_cmd cmd = {
986 .id = BEACON_TEMPLATE_CMD,
992 cmd.dataflags[0] = 0;
993 cmd.len[1] = beacon->len;
994 cmd.data[1] = beacon->data;
995 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
997 return iwl_mvm_send_cmd(mvm, &cmd);
1000 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
1001 struct ieee80211_vif *vif,
1002 struct sk_buff *beacon)
1004 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1005 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
1007 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1009 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1011 if (vif->type == NL80211_IFTYPE_AP)
1012 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1013 &beacon_cmd.tim_size,
1014 beacon->data, beacon->len);
1016 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1017 sizeof(beacon_cmd));
1020 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
1021 struct ieee80211_vif *vif,
1022 struct sk_buff *beacon)
1024 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1025 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
1027 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1029 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1031 if (vif->type == NL80211_IFTYPE_AP)
1032 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1033 &beacon_cmd.tim_size,
1034 beacon->data, beacon->len);
1036 beacon_cmd.csa_offset =
1037 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1038 WLAN_EID_CHANNEL_SWITCH,
1040 beacon_cmd.ecsa_offset =
1041 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1042 WLAN_EID_EXT_CHANSWITCH_ANN,
1045 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1046 sizeof(beacon_cmd));
1049 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
1050 struct ieee80211_vif *vif,
1051 struct sk_buff *beacon)
1053 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1054 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
1055 struct iwl_mac_beacon_cmd beacon_cmd = {};
1056 u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
1059 flags = iwl_mvm_mac80211_idx_to_hwrate(rate);
1061 if (rate == IWL_FIRST_CCK_RATE)
1062 flags |= IWL_MAC_BEACON_CCK;
1064 beacon_cmd.flags = cpu_to_le16(flags);
1065 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1066 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1068 if (vif->type == NL80211_IFTYPE_AP)
1069 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1070 &beacon_cmd.tim_size,
1071 beacon->data, beacon->len);
1073 beacon_cmd.csa_offset =
1074 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1075 WLAN_EID_CHANNEL_SWITCH,
1077 beacon_cmd.ecsa_offset =
1078 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1079 WLAN_EID_EXT_CHANSWITCH_ANN,
1082 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1083 sizeof(beacon_cmd));
1086 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1087 struct ieee80211_vif *vif,
1088 struct sk_buff *beacon)
1090 if (WARN_ON(!beacon))
1093 if (!fw_has_capa(&mvm->fw->ucode_capa,
1094 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1095 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1097 if (fw_has_api(&mvm->fw->ucode_capa,
1098 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1099 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon);
1101 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1104 /* The beacon template for the AP/GO/IBSS has changed and needs update */
1105 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1106 struct ieee80211_vif *vif)
1108 struct sk_buff *beacon;
1111 WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1112 vif->type != NL80211_IFTYPE_ADHOC);
1114 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
1118 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
1119 dev_kfree_skb(beacon);
1123 struct iwl_mvm_mac_ap_iterator_data {
1124 struct iwl_mvm *mvm;
1125 struct ieee80211_vif *vif;
1126 u32 beacon_device_ts;
1130 /* Find the beacon_device_ts and beacon_int for a managed interface */
1131 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1132 struct ieee80211_vif *vif)
1134 struct iwl_mvm_mac_ap_iterator_data *data = _data;
1136 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1139 /* Station client has higher priority over P2P client*/
1140 if (vif->p2p && data->beacon_device_ts)
1143 data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1144 data->beacon_int = vif->bss_conf.beacon_int;
1148 * Fill the specific data for mac context of type AP of P2P GO
1150 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1151 struct ieee80211_vif *vif,
1152 struct iwl_mac_ctx_cmd *cmd,
1153 struct iwl_mac_data_ap *ctxt_ap,
1156 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1157 struct iwl_mvm_mac_ap_iterator_data data = {
1160 .beacon_device_ts = 0
1163 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1164 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1167 * in AP mode, pass probe requests and beacons from other APs
1168 * (needed for ht protection); when there're no any associated
1169 * station don't ask FW to pass beacons to prevent unnecessary
1172 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
1173 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1174 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
1175 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1177 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1180 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1181 ctxt_ap->bi_reciprocal =
1182 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
1183 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1184 vif->bss_conf.dtim_period);
1185 ctxt_ap->dtim_reciprocal =
1186 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
1187 vif->bss_conf.dtim_period));
1189 if (!fw_has_api(&mvm->fw->ucode_capa,
1190 IWL_UCODE_TLV_API_STA_TYPE))
1191 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
1194 * Only set the beacon time when the MAC is being added, when we
1195 * just modify the MAC then we should keep the time -- the firmware
1196 * can otherwise have a "jumping" TBTT.
1200 * If there is a station/P2P client interface which is
1201 * associated, set the AP's TBTT far enough from the station's
1202 * TBTT. Otherwise, set it to the current system time
1204 ieee80211_iterate_active_interfaces_atomic(
1205 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1206 iwl_mvm_mac_ap_iterator, &data);
1208 if (data.beacon_device_ts) {
1209 u32 rand = (prandom_u32() % (64 - 36)) + 36;
1210 mvmvif->ap_beacon_time = data.beacon_device_ts +
1211 ieee80211_tu_to_usec(data.beacon_int * rand /
1214 mvmvif->ap_beacon_time =
1215 iwl_read_prph(mvm->trans,
1216 DEVICE_SYSTEM_TIME_REG);
1220 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1221 ctxt_ap->beacon_tsf = 0; /* unused */
1223 /* TODO: Assume that the beacon id == mac context id */
1224 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1227 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1228 struct ieee80211_vif *vif,
1231 struct iwl_mac_ctx_cmd cmd = {};
1233 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1235 /* Fill the common data for all mac context types */
1236 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1238 /* Fill the data specific for ap mode */
1239 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1240 action == FW_CTXT_ACTION_ADD);
1242 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1245 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1246 struct ieee80211_vif *vif,
1249 struct iwl_mac_ctx_cmd cmd = {};
1250 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1252 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1254 /* Fill the common data for all mac context types */
1255 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1257 /* Fill the data specific for GO mode */
1258 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1259 action == FW_CTXT_ACTION_ADD);
1261 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1262 IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1263 cmd.go.opp_ps_enabled =
1264 cpu_to_le32(!!(noa->oppps_ctwindow &
1265 IEEE80211_P2P_OPPPS_ENABLE_BIT));
1267 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1270 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1271 u32 action, bool force_assoc_off,
1272 const u8 *bssid_override)
1274 switch (vif->type) {
1275 case NL80211_IFTYPE_STATION:
1276 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1280 case NL80211_IFTYPE_AP:
1282 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1284 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1286 case NL80211_IFTYPE_MONITOR:
1287 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1288 case NL80211_IFTYPE_P2P_DEVICE:
1289 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1290 case NL80211_IFTYPE_ADHOC:
1291 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1299 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1301 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1304 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1305 vif->addr, ieee80211_vif_type_p2p(vif)))
1308 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1313 /* will only do anything at resume from D3 time */
1314 iwl_mvm_set_last_nonqos_seq(mvm, vif);
1316 mvmvif->uploaded = true;
1320 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1321 bool force_assoc_off, const u8 *bssid_override)
1323 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1325 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1326 vif->addr, ieee80211_vif_type_p2p(vif)))
1329 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1330 force_assoc_off, bssid_override);
1333 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1335 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1336 struct iwl_mac_ctx_cmd cmd;
1339 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1340 vif->addr, ieee80211_vif_type_p2p(vif)))
1343 memset(&cmd, 0, sizeof(cmd));
1345 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1347 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1349 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1352 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1356 mvmvif->uploaded = false;
1358 if (vif->type == NL80211_IFTYPE_MONITOR) {
1359 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1360 iwl_mvm_dealloc_snif_sta(mvm);
1366 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1367 struct ieee80211_vif *csa_vif, u32 gp2,
1370 struct iwl_mvm_vif *mvmvif =
1371 iwl_mvm_vif_from_mac80211(csa_vif);
1373 /* Don't start to countdown from a failed beacon */
1374 if (!tx_success && !mvmvif->csa_countdown)
1377 mvmvif->csa_countdown = true;
1379 if (!ieee80211_csa_is_complete(csa_vif)) {
1380 int c = ieee80211_csa_update_counter(csa_vif);
1382 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1384 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1386 u32 rel_time = (c + 1) *
1387 csa_vif->bss_conf.beacon_int -
1388 IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1389 u32 apply_time = gp2 + rel_time * 1024;
1391 iwl_mvm_schedule_csa_period(mvm, csa_vif,
1392 IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1393 IWL_MVM_CHANNEL_SWITCH_MARGIN,
1396 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1397 /* we don't have CSA NoA scheduled yet, switch now */
1398 ieee80211_csa_finish(csa_vif);
1399 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1403 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1404 struct iwl_rx_cmd_buffer *rxb)
1406 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1407 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1408 struct iwl_mvm_tx_resp *beacon_notify_hdr;
1409 struct ieee80211_vif *csa_vif;
1410 struct ieee80211_vif *tx_blocked_vif;
1411 struct agg_tx_status *agg_status;
1414 lockdep_assert_held(&mvm->mutex);
1416 beacon_notify_hdr = &beacon->beacon_notify_hdr;
1417 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1418 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1420 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1421 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1423 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n",
1424 status, beacon_notify_hdr->failure_frame,
1425 le64_to_cpu(beacon->tsf),
1426 mvm->ap_last_beacon_gp2,
1427 le32_to_cpu(beacon_notify_hdr->initial_rate));
1429 csa_vif = rcu_dereference_protected(mvm->csa_vif,
1430 lockdep_is_held(&mvm->mutex));
1431 if (unlikely(csa_vif && csa_vif->csa_active))
1432 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1433 (status == TX_STATUS_SUCCESS));
1435 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1436 lockdep_is_held(&mvm->mutex));
1437 if (unlikely(tx_blocked_vif)) {
1438 struct iwl_mvm_vif *mvmvif =
1439 iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1442 * The channel switch is started and we have blocked the
1443 * stations. If this is the first beacon (the timeout wasn't
1444 * set), set the unblock timeout, otherwise countdown
1446 if (!mvm->csa_tx_block_bcn_timeout)
1447 mvm->csa_tx_block_bcn_timeout =
1448 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1450 mvm->csa_tx_block_bcn_timeout--;
1452 /* Check if the timeout is expired, and unblock tx */
1453 if (mvm->csa_tx_block_bcn_timeout == 0) {
1454 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1455 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1460 static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
1461 struct ieee80211_vif *vif)
1463 struct iwl_missed_beacons_notif *missed_beacons = _data;
1464 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1465 struct iwl_mvm *mvm = mvmvif->mvm;
1466 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1467 struct iwl_fw_dbg_trigger_tlv *trigger;
1468 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1469 u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1471 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id))
1474 rx_missed_bcon = le32_to_cpu(missed_beacons->consec_missed_beacons);
1475 rx_missed_bcon_since_rx =
1476 le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx);
1478 * TODO: the threshold should be adjusted based on latency conditions,
1479 * and/or in case of a CS flow on one of the other AP vifs.
1481 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
1482 IWL_MVM_MISSED_BEACONS_THRESHOLD)
1483 ieee80211_beacon_loss(vif);
1485 if (!iwl_fw_dbg_trigger_enabled(mvm->fw,
1486 FW_DBG_TRIGGER_MISSED_BEACONS))
1489 trigger = iwl_fw_dbg_get_trigger(mvm->fw,
1490 FW_DBG_TRIGGER_MISSED_BEACONS);
1491 bcon_trig = (void *)trigger->data;
1492 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1493 stop_trig_missed_bcon_since_rx =
1494 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1496 /* TODO: implement start trigger */
1498 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
1499 ieee80211_vif_to_wdev(vif),
1503 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1504 rx_missed_bcon >= stop_trig_missed_bcon)
1505 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1508 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1509 struct iwl_rx_cmd_buffer *rxb)
1511 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1512 struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1515 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1516 le32_to_cpu(mb->mac_id),
1517 le32_to_cpu(mb->consec_missed_beacons),
1518 le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1519 le32_to_cpu(mb->num_recvd_beacons),
1520 le32_to_cpu(mb->num_expected_beacons));
1522 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1523 IEEE80211_IFACE_ITER_NORMAL,
1524 iwl_mvm_beacon_loss_iterator,
1528 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1529 struct iwl_rx_cmd_buffer *rxb)
1531 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1532 struct iwl_stored_beacon_notif *sb = (void *)pkt->data;
1533 struct ieee80211_rx_status rx_status;
1534 struct sk_buff *skb;
1535 u32 size = le32_to_cpu(sb->byte_count);
1540 skb = alloc_skb(size, GFP_ATOMIC);
1542 IWL_ERR(mvm, "alloc_skb failed\n");
1546 /* update rx_status according to the notification's metadata */
1547 memset(&rx_status, 0, sizeof(rx_status));
1548 rx_status.mactime = le64_to_cpu(sb->tsf);
1549 /* TSF as indicated by the firmware is at INA time */
1550 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1551 rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1553 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1554 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1556 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1560 skb_put_data(skb, sb->data, size);
1561 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1563 /* pass it as regular rx to mac80211 */
1564 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1567 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm,
1568 struct iwl_rx_cmd_buffer *rxb)
1570 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1571 struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data;
1572 struct ieee80211_vif *csa_vif;
1573 struct iwl_mvm_vif *mvmvif;
1574 int len = iwl_rx_packet_payload_len(pkt);
1577 if (WARN_ON_ONCE(len < sizeof(*notif)))
1582 csa_vif = rcu_dereference(mvm->csa_vif);
1583 if (WARN_ON(!csa_vif || !csa_vif->csa_active))
1586 id_n_color = le32_to_cpu(notif->id_and_color);
1588 mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
1589 if (WARN(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color) != id_n_color,
1590 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1591 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color), id_n_color))
1594 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1596 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1597 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1598 csa_vif->bss_conf.beacon_int));
1600 ieee80211_csa_finish(csa_vif);
1604 RCU_INIT_POINTER(mvm->csa_vif, NULL);