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 - 2013 Intel Corporation. All rights reserved.
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.
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.
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,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
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37 * modification, are permitted provided that the following conditions
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
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43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
46 * * Neither the name Intel Corporation nor the names of its
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48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *****************************************************************************/
64 #include <linux/etherdevice.h>
65 #include <net/mac80211.h>
71 const u8 iwl_mvm_ac_to_tx_fifo[] = {
78 struct iwl_mvm_mac_iface_iterator_data {
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)];
83 unsigned long used_hw_queues[BITS_TO_LONGS(IWL_MVM_FIRST_AGG_QUEUE)];
84 enum iwl_tsf_id preferred_tsf;
88 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
89 struct ieee80211_vif *vif)
91 struct iwl_mvm_mac_iface_iterator_data *data = _data;
92 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
95 /* Iterator may already find the interface being added -- skip it */
96 if (vif == data->vif) {
97 data->found_vif = true;
101 /* Mark the queues used by the vif */
102 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
103 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
104 __set_bit(vif->hw_queue[ac], data->used_hw_queues);
106 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
107 __set_bit(vif->cab_queue, data->used_hw_queues);
110 * Mark MAC IDs as used by clearing the available bit, and
111 * (below) mark TSFs as used if their existing use is not
112 * compatible with the new interface type.
113 * No locking or atomic bit operations are needed since the
114 * data is on the stack of the caller function.
116 __clear_bit(mvmvif->id, data->available_mac_ids);
119 * The TSF is a hardware/firmware resource, there are 4 and
120 * the driver should assign and free them as needed. However,
121 * there are cases where 2 MACs should share the same TSF ID
122 * for the purpose of clock sync, an optimization to avoid
123 * clock drift causing overlapping TBTTs/DTIMs for a GO and
124 * client in the system.
126 * The firmware will decide according to the MAC type which
127 * will be the master and slave. Clients that need to sync
128 * with a remote station will be the master, and an AP or GO
131 * Depending on the new interface type it can be slaved to
132 * or become the master of an existing interface.
134 switch (data->vif->type) {
135 case NL80211_IFTYPE_STATION:
137 * The new interface is client, so if the existing one
138 * we're iterating is an AP, the TSF should be used to
139 * avoid drift between the new client and existing AP,
140 * the existing AP will get drift updates from the new
141 * client context in this case
143 if (vif->type == NL80211_IFTYPE_AP) {
144 if (data->preferred_tsf == NUM_TSF_IDS &&
145 test_bit(mvmvif->tsf_id, data->available_tsf_ids))
146 data->preferred_tsf = mvmvif->tsf_id;
150 case NL80211_IFTYPE_AP:
152 * The new interface is AP/GO, so should get drift
153 * updates from an existing client or use the same
154 * TSF as an existing GO. There's no drift between
155 * TSFs internally but if they used different TSFs
156 * then a new client MAC could update one of them
157 * and cause drift that way.
159 if (vif->type == NL80211_IFTYPE_STATION ||
160 vif->type == NL80211_IFTYPE_AP) {
161 if (data->preferred_tsf == NUM_TSF_IDS &&
162 test_bit(mvmvif->tsf_id, data->available_tsf_ids))
163 data->preferred_tsf = mvmvif->tsf_id;
169 * For all other interface types there's no need to
170 * take drift into account. Either they're exclusive
171 * like IBSS and monitor, or we don't care much about
172 * their TSF (like P2P Device), but we won't be able
173 * to share the TSF resource.
179 * Unless we exited above, we can't share the TSF resource
180 * that the virtual interface we're iterating over is using
181 * with the new one, so clear the available bit and if this
182 * was the preferred one, reset that as well.
184 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
186 if (data->preferred_tsf == mvmvif->tsf_id)
187 data->preferred_tsf = NUM_TSF_IDS;
191 * Get the mask of the queus used by the vif
193 u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm,
194 struct ieee80211_vif *vif)
198 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
199 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
201 qmask = (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) ?
202 BIT(vif->cab_queue) : 0;
204 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
205 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
206 qmask |= BIT(vif->hw_queue[ac]);
211 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
212 struct ieee80211_vif *vif)
214 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
215 struct iwl_mvm_mac_iface_iterator_data data = {
218 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
219 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
220 /* no preference yet */
221 .preferred_tsf = NUM_TSF_IDS,
223 BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
224 BIT(IWL_MVM_AUX_QUEUE) |
225 BIT(IWL_MVM_CMD_QUEUE)
233 * Allocate a MAC ID and a TSF for this MAC, along with the queues
234 * and other resources.
238 * Before the iterator, we start with all MAC IDs and TSFs available.
240 * During iteration, all MAC IDs are cleared that are in use by other
241 * virtual interfaces, and all TSF IDs are cleared that can't be used
242 * by this new virtual interface because they're used by an interface
243 * that can't share it with the new one.
244 * At the same time, we check if there's a preferred TSF in the case
245 * that we should share it with another interface.
248 /* Currently, MAC ID 0 should be used only for the managed vif */
249 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
250 __clear_bit(0, data.available_mac_ids);
252 ieee80211_iterate_active_interfaces_atomic(
253 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
254 iwl_mvm_mac_iface_iterator, &data);
257 * In the case we're getting here during resume, it's similar to
258 * firmware restart, and with RESUME_ALL the iterator will find
259 * the vif being added already.
260 * We don't want to reassign any IDs in either case since doing
261 * so would probably assign different IDs (as interfaces aren't
262 * necessarily added in the same order), but the old IDs were
263 * preserved anyway, so skip ID assignment for both resume and
269 /* Therefore, in recovery, we can't get here */
270 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
272 mvmvif->id = find_first_bit(data.available_mac_ids,
273 NUM_MAC_INDEX_DRIVER);
274 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
275 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
280 if (data.preferred_tsf != NUM_TSF_IDS)
281 mvmvif->tsf_id = data.preferred_tsf;
283 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
285 if (mvmvif->tsf_id == NUM_TSF_IDS) {
286 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
293 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
294 mvmvif->time_event_data.id = TE_MAX;
296 /* No need to allocate data queues to P2P Device MAC.*/
297 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
298 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
299 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
304 /* Find available queues, and allocate them to the ACs */
305 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
306 u8 queue = find_first_zero_bit(data.used_hw_queues,
307 IWL_MVM_FIRST_AGG_QUEUE);
309 if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
310 IWL_ERR(mvm, "Failed to allocate queue\n");
315 __set_bit(queue, data.used_hw_queues);
316 vif->hw_queue[ac] = queue;
319 /* Allocate the CAB queue for softAP and GO interfaces */
320 if (vif->type == NL80211_IFTYPE_AP) {
321 u8 queue = find_first_zero_bit(data.used_hw_queues,
322 IWL_MVM_FIRST_AGG_QUEUE);
324 if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
325 IWL_ERR(mvm, "Failed to allocate cab queue\n");
330 vif->cab_queue = queue;
332 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
335 mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
336 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
341 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
342 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
343 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
347 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
352 lockdep_assert_held(&mvm->mutex);
354 ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
359 case NL80211_IFTYPE_P2P_DEVICE:
360 iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
363 case NL80211_IFTYPE_AP:
364 iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue,
368 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
369 iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac],
370 iwl_mvm_ac_to_tx_fifo[ac]);
377 void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
381 lockdep_assert_held(&mvm->mutex);
384 case NL80211_IFTYPE_P2P_DEVICE:
385 iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE);
387 case NL80211_IFTYPE_AP:
388 iwl_trans_txq_disable(mvm->trans, vif->cab_queue);
391 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
392 iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]);
396 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
397 struct ieee80211_vif *vif,
398 enum ieee80211_band band,
399 u8 *cck_rates, u8 *ofdm_rates)
401 struct ieee80211_supported_band *sband;
402 unsigned long basic = vif->bss_conf.basic_rates;
403 int lowest_present_ofdm = 100;
404 int lowest_present_cck = 100;
409 sband = mvm->hw->wiphy->bands[band];
411 for_each_set_bit(i, &basic, BITS_PER_LONG) {
412 int hw = sband->bitrates[i].hw_value;
413 if (hw >= IWL_FIRST_OFDM_RATE) {
414 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
415 if (lowest_present_ofdm > hw)
416 lowest_present_ofdm = hw;
418 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
421 if (lowest_present_cck > hw)
422 lowest_present_cck = hw;
427 * Now we've got the basic rates as bitmaps in the ofdm and cck
428 * variables. This isn't sufficient though, as there might not
429 * be all the right rates in the bitmap. E.g. if the only basic
430 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
431 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
433 * [...] a STA responding to a received frame shall transmit
434 * its Control Response frame [...] at the highest rate in the
435 * BSSBasicRateSet parameter that is less than or equal to the
436 * rate of the immediately previous frame in the frame exchange
437 * sequence ([...]) and that is of the same modulation class
438 * ([...]) as the received frame. If no rate contained in the
439 * BSSBasicRateSet parameter meets these conditions, then the
440 * control frame sent in response to a received frame shall be
441 * transmitted at the highest mandatory rate of the PHY that is
442 * less than or equal to the rate of the received frame, and
443 * that is of the same modulation class as the received frame.
445 * As a consequence, we need to add all mandatory rates that are
446 * lower than all of the basic rates to these bitmaps.
449 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
450 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
451 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
452 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
453 /* 6M already there or needed so always add */
454 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
457 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
459 * - if no CCK rates are basic, it must be ERP since there must
460 * be some basic rates at all, so they're OFDM => ERP PHY
461 * (or we're in 5 GHz, and the cck bitmap will never be used)
462 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
463 * - if 5.5M is basic, 1M and 2M are mandatory
464 * - if 2M is basic, 1M is mandatory
465 * - if 1M is basic, that's the only valid ACK rate.
466 * As a consequence, it's not as complicated as it sounds, just add
467 * any lower rates to the ACK rate bitmap.
469 if (IWL_RATE_11M_INDEX < lowest_present_cck)
470 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
471 if (IWL_RATE_5M_INDEX < lowest_present_cck)
472 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
473 if (IWL_RATE_2M_INDEX < lowest_present_cck)
474 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
475 /* 1M already there or needed so always add */
476 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
482 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
483 struct ieee80211_vif *vif,
484 struct iwl_mac_ctx_cmd *cmd,
487 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
488 struct ieee80211_chanctx_conf *chanctx;
489 u8 cck_ack_rates, ofdm_ack_rates;
492 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
494 cmd->action = cpu_to_le32(action);
497 case NL80211_IFTYPE_STATION:
499 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
501 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
503 case NL80211_IFTYPE_AP:
504 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
506 case NL80211_IFTYPE_MONITOR:
507 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
509 case NL80211_IFTYPE_P2P_DEVICE:
510 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
512 case NL80211_IFTYPE_ADHOC:
513 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
519 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
521 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
522 if (vif->bss_conf.bssid)
523 memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN);
525 eth_broadcast_addr(cmd->bssid_addr);
528 chanctx = rcu_dereference(vif->chanctx_conf);
529 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
530 : IEEE80211_BAND_2GHZ,
531 &cck_ack_rates, &ofdm_ack_rates);
534 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
535 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
537 cmd->cck_short_preamble =
538 cpu_to_le32(vif->bss_conf.use_short_preamble ?
539 MAC_FLG_SHORT_PREAMBLE : 0);
541 cpu_to_le32(vif->bss_conf.use_short_slot ?
542 MAC_FLG_SHORT_SLOT : 0);
544 for (i = 0; i < AC_NUM; i++) {
545 cmd->ac[i].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min);
546 cmd->ac[i].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max);
547 cmd->ac[i].aifsn = mvmvif->queue_params[i].aifs;
548 cmd->ac[i].edca_txop =
549 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
550 cmd->ac[i].fifos_mask = BIT(iwl_mvm_ac_to_tx_fifo[i]);
553 if (vif->bss_conf.qos)
554 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
556 /* Don't use cts to self as the fw doesn't support it currently. */
557 if (vif->bss_conf.use_cts_prot)
558 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
561 * I think that we should enable these 2 flags regardless the HT PROT
562 * fields in the HT IE, but I am not sure. Someone knows whom to ask?...
564 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
565 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
566 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT |
567 MAC_PROT_FLG_FAT_PROT);
570 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
573 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
574 struct iwl_mac_ctx_cmd *cmd)
576 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
579 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
580 le32_to_cpu(cmd->action), ret);
585 * Fill the specific data for mac context of type station or p2p client
587 static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm,
588 struct ieee80211_vif *vif,
589 struct iwl_mac_data_sta *ctxt_sta)
591 /* We need the dtim_period to set the MAC as associated */
592 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period) {
596 * The DTIM count counts down, so when it is N that means N
597 * more beacon intervals happen until the DTIM TBTT. Therefore
598 * add this to the current time. If that ends up being in the
599 * future, the firmware will handle it.
601 * Also note that the system_timestamp (which we get here as
602 * "sync_device_ts") and TSF timestamp aren't at exactly the
603 * same offset in the frame -- the TSF is at the first symbol
604 * of the TSF, the system timestamp is at signal acquisition
605 * time. This means there's an offset between them of at most
606 * a few hundred microseconds (24 * 8 bits + PLCP time gives
607 * 384us in the longest case), this is currently not relevant
608 * as the firmware wakes up around 2ms before the TBTT.
610 dtim_offs = vif->bss_conf.sync_dtim_count *
611 vif->bss_conf.beacon_int;
612 /* convert TU to usecs */
616 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
617 ctxt_sta->dtim_time =
618 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
620 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
621 le64_to_cpu(ctxt_sta->dtim_tsf),
622 le32_to_cpu(ctxt_sta->dtim_time),
625 ctxt_sta->is_assoc = cpu_to_le32(1);
627 ctxt_sta->is_assoc = cpu_to_le32(0);
630 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
631 ctxt_sta->bi_reciprocal =
632 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
633 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
634 vif->bss_conf.dtim_period);
635 ctxt_sta->dtim_reciprocal =
636 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
637 vif->bss_conf.dtim_period));
639 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
640 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
643 static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm,
644 struct ieee80211_vif *vif,
647 struct iwl_mac_ctx_cmd cmd = {};
649 WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p);
651 /* Fill the common data for all mac context types */
652 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
654 /* Allow beacons to pass through as long as we are not associated,or we
655 * do not have dtim period information */
656 if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period)
657 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
659 cmd.filter_flags &= ~cpu_to_le32(MAC_FILTER_IN_BEACON);
661 /* Fill the data specific for station mode */
662 iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta);
664 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
667 static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm,
668 struct ieee80211_vif *vif,
671 struct iwl_mac_ctx_cmd cmd = {};
673 WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p);
675 /* Fill the common data for all mac context types */
676 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
678 /* Fill the data specific for station mode */
679 iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta);
681 cmd.p2p_sta.ctwin = cpu_to_le32(vif->bss_conf.p2p_ctwindow);
683 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
686 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
687 struct ieee80211_vif *vif,
690 struct iwl_mac_ctx_cmd cmd = {};
692 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
694 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
696 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
697 MAC_FILTER_IN_CONTROL_AND_MGMT |
698 MAC_FILTER_IN_BEACON |
699 MAC_FILTER_IN_PROBE_REQUEST);
701 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
704 struct iwl_mvm_go_iterator_data {
708 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
710 struct iwl_mvm_go_iterator_data *data = _data;
711 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
713 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->ap_active)
714 data->go_active = true;
717 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
718 struct ieee80211_vif *vif,
721 struct iwl_mac_ctx_cmd cmd = {};
722 struct iwl_mvm_go_iterator_data data = {};
724 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
726 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
728 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
730 /* Override the filter flags to accept only probe requests */
731 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
734 * This flag should be set to true when the P2P Device is
735 * discoverable and there is at least another active P2P GO. Settings
736 * this flag will allow the P2P Device to be discoverable on other
737 * channels in addition to its listen channel.
738 * Note that this flag should not be set in other cases as it opens the
739 * Rx filters on all MAC and increases the number of interrupts.
741 ieee80211_iterate_active_interfaces_atomic(
742 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
743 iwl_mvm_go_iterator, &data);
745 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
746 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
749 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
750 struct iwl_mac_beacon_cmd *beacon_cmd,
751 u8 *beacon, u32 frame_size)
754 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
756 /* The index is relative to frame start but we start looking at the
757 * variable-length part of the beacon. */
758 tim_idx = mgmt->u.beacon.variable - beacon;
760 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
761 while ((tim_idx < (frame_size - 2)) &&
762 (beacon[tim_idx] != WLAN_EID_TIM))
763 tim_idx += beacon[tim_idx+1] + 2;
765 /* If TIM field was found, set variables */
766 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
767 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
768 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
770 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
774 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
775 struct ieee80211_vif *vif,
776 struct sk_buff *beacon)
778 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
779 struct iwl_host_cmd cmd = {
780 .id = BEACON_TEMPLATE_CMD,
783 struct iwl_mac_beacon_cmd beacon_cmd = {};
784 struct ieee80211_tx_info *info;
788 if (WARN_ON(!beacon))
791 beacon_skb_len = beacon->len;
793 /* TODO: for now the beacon template id is set to be the mac context id.
794 * Might be better to handle it as another resource ... */
795 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
797 /* Set up TX command fields */
798 beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
799 beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
800 beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
801 beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
805 mvm->mgmt_last_antenna_idx =
806 iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw),
807 mvm->mgmt_last_antenna_idx);
809 beacon_cmd.tx.rate_n_flags =
810 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
813 info = IEEE80211_SKB_CB(beacon);
815 if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
816 rate = IWL_FIRST_OFDM_RATE;
818 rate = IWL_FIRST_CCK_RATE;
819 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
821 beacon_cmd.tx.rate_n_flags |=
822 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
824 /* Set up TX beacon command fields */
825 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
830 cmd.len[0] = sizeof(beacon_cmd);
831 cmd.data[0] = &beacon_cmd;
832 cmd.dataflags[0] = 0;
833 cmd.len[1] = beacon_skb_len;
834 cmd.data[1] = beacon->data;
835 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
837 return iwl_mvm_send_cmd(mvm, &cmd);
840 /* The beacon template for the AP/GO context has changed and needs update */
841 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
842 struct ieee80211_vif *vif)
844 struct sk_buff *beacon;
847 WARN_ON(vif->type != NL80211_IFTYPE_AP);
849 beacon = ieee80211_beacon_get(mvm->hw, vif);
853 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
854 dev_kfree_skb(beacon);
859 * Fill the specific data for mac context of type AP of P2P GO
861 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
862 struct ieee80211_vif *vif,
863 struct iwl_mac_data_ap *ctxt_ap,
866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
868 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
869 ctxt_ap->bi_reciprocal =
870 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
871 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
872 vif->bss_conf.dtim_period);
873 ctxt_ap->dtim_reciprocal =
874 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
875 vif->bss_conf.dtim_period));
877 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
880 * Only read the system time when the MAC is being added, when we
881 * just modify the MAC then we should keep the time -- the firmware
882 * can otherwise have a "jumping" TBTT.
885 mvmvif->ap_beacon_time =
886 iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
888 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
890 ctxt_ap->beacon_tsf = 0; /* unused */
892 /* TODO: Assume that the beacon id == mac context id */
893 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
896 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
897 struct ieee80211_vif *vif,
900 struct iwl_mac_ctx_cmd cmd = {};
902 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
904 /* Fill the common data for all mac context types */
905 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
907 /* Also enable probe requests to pass */
908 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
910 /* Fill the data specific for ap mode */
911 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
912 action == FW_CTXT_ACTION_ADD);
914 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
917 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
918 struct ieee80211_vif *vif,
921 struct iwl_mac_ctx_cmd cmd = {};
923 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
925 /* Fill the common data for all mac context types */
926 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
928 /* Fill the data specific for GO mode */
929 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
930 action == FW_CTXT_ACTION_ADD);
932 cmd.go.ctwin = cpu_to_le32(vif->bss_conf.p2p_ctwindow);
933 cmd.go.opp_ps_enabled = cpu_to_le32(!!vif->bss_conf.p2p_oppps);
935 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
938 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
942 case NL80211_IFTYPE_STATION:
944 return iwl_mvm_mac_ctxt_cmd_station(mvm, vif,
947 return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif,
950 case NL80211_IFTYPE_AP:
952 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
954 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
956 case NL80211_IFTYPE_MONITOR:
957 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
958 case NL80211_IFTYPE_P2P_DEVICE:
959 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
967 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
969 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
972 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
973 vif->addr, ieee80211_vif_type_p2p(vif)))
976 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD);
980 mvmvif->uploaded = true;
984 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
986 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
988 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
989 vif->addr, ieee80211_vif_type_p2p(vif)))
992 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY);
995 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
997 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
998 struct iwl_mac_ctx_cmd cmd;
1001 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1002 vif->addr, ieee80211_vif_type_p2p(vif)))
1005 memset(&cmd, 0, sizeof(cmd));
1007 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1009 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1011 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
1014 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1018 mvmvif->uploaded = false;
1022 int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1023 struct iwl_rx_cmd_buffer *rxb,
1024 struct iwl_device_cmd *cmd)
1026 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1027 struct iwl_beacon_notif *beacon = (void *)pkt->data;
1028 u16 status __maybe_unused =
1029 le16_to_cpu(beacon->beacon_notify_hdr.status.status);
1030 u32 rate __maybe_unused =
1031 le32_to_cpu(beacon->beacon_notify_hdr.initial_rate);
1033 IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%16llX rate:%d\n",
1034 status & TX_STATUS_MSK,
1035 beacon->beacon_notify_hdr.failure_frame,
1036 le64_to_cpu(beacon->tsf),