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 LICENSE.GPL.
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.
36 * Redistribution and use in source and binary forms, with or without
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.
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
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.
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,
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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.
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_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 ieee80211_iterate_active_interfaces_atomic(
249 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
250 iwl_mvm_mac_iface_iterator, &data);
253 * In the case we're getting here during resume, it's similar to
254 * firmware restart, and with RESUME_ALL the iterator will find
255 * the vif being added already.
256 * We don't want to reassign any IDs in either case since doing
257 * so would probably assign different IDs (as interfaces aren't
258 * necessarily added in the same order), but the old IDs were
259 * preserved anyway, so skip ID assignment for both resume and
265 /* Therefore, in recovery, we can't get here */
266 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
268 mvmvif->id = find_first_bit(data.available_mac_ids,
269 NUM_MAC_INDEX_DRIVER);
270 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
271 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
276 if (data.preferred_tsf != NUM_TSF_IDS)
277 mvmvif->tsf_id = data.preferred_tsf;
279 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
281 if (mvmvif->tsf_id == NUM_TSF_IDS) {
282 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
289 /* No need to allocate data queues to P2P Device MAC.*/
290 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
291 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
292 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
297 /* Find available queues, and allocate them to the ACs */
298 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
299 u8 queue = find_first_zero_bit(data.used_hw_queues,
300 IWL_MVM_FIRST_AGG_QUEUE);
302 if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
303 IWL_ERR(mvm, "Failed to allocate queue\n");
308 __set_bit(queue, data.used_hw_queues);
309 vif->hw_queue[ac] = queue;
312 /* Allocate the CAB queue for softAP and GO interfaces */
313 if (vif->type == NL80211_IFTYPE_AP) {
314 u8 queue = find_first_zero_bit(data.used_hw_queues,
315 IWL_MVM_FIRST_AGG_QUEUE);
317 if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
318 IWL_ERR(mvm, "Failed to allocate cab queue\n");
323 vif->cab_queue = queue;
325 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
328 mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
329 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
331 INIT_LIST_HEAD(&mvmvif->time_event_data.list);
332 mvmvif->time_event_data.id = TE_MAX;
337 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
338 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
339 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
343 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
348 lockdep_assert_held(&mvm->mutex);
350 ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
355 case NL80211_IFTYPE_P2P_DEVICE:
356 iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
359 case NL80211_IFTYPE_AP:
360 iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue,
364 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
365 iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac],
366 iwl_mvm_ac_to_tx_fifo[ac]);
373 void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
377 lockdep_assert_held(&mvm->mutex);
380 case NL80211_IFTYPE_P2P_DEVICE:
381 iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE);
383 case NL80211_IFTYPE_AP:
384 iwl_trans_txq_disable(mvm->trans, vif->cab_queue);
387 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
388 iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]);
392 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
393 struct ieee80211_vif *vif,
394 enum ieee80211_band band,
395 u8 *cck_rates, u8 *ofdm_rates)
397 struct ieee80211_supported_band *sband;
398 unsigned long basic = vif->bss_conf.basic_rates;
399 int lowest_present_ofdm = 100;
400 int lowest_present_cck = 100;
405 sband = mvm->hw->wiphy->bands[band];
407 for_each_set_bit(i, &basic, BITS_PER_LONG) {
408 int hw = sband->bitrates[i].hw_value;
409 if (hw >= IWL_FIRST_OFDM_RATE) {
410 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
411 if (lowest_present_ofdm > hw)
412 lowest_present_ofdm = hw;
414 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
417 if (lowest_present_cck > hw)
418 lowest_present_cck = hw;
423 * Now we've got the basic rates as bitmaps in the ofdm and cck
424 * variables. This isn't sufficient though, as there might not
425 * be all the right rates in the bitmap. E.g. if the only basic
426 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
427 * and 6 Mbps because the 802.11-2007 standard says in 9.6:
429 * [...] a STA responding to a received frame shall transmit
430 * its Control Response frame [...] at the highest rate in the
431 * BSSBasicRateSet parameter that is less than or equal to the
432 * rate of the immediately previous frame in the frame exchange
433 * sequence ([...]) and that is of the same modulation class
434 * ([...]) as the received frame. If no rate contained in the
435 * BSSBasicRateSet parameter meets these conditions, then the
436 * control frame sent in response to a received frame shall be
437 * transmitted at the highest mandatory rate of the PHY that is
438 * less than or equal to the rate of the received frame, and
439 * that is of the same modulation class as the received frame.
441 * As a consequence, we need to add all mandatory rates that are
442 * lower than all of the basic rates to these bitmaps.
445 if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
446 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
447 if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
448 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
449 /* 6M already there or needed so always add */
450 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
453 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
455 * - if no CCK rates are basic, it must be ERP since there must
456 * be some basic rates at all, so they're OFDM => ERP PHY
457 * (or we're in 5 GHz, and the cck bitmap will never be used)
458 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M
459 * - if 5.5M is basic, 1M and 2M are mandatory
460 * - if 2M is basic, 1M is mandatory
461 * - if 1M is basic, that's the only valid ACK rate.
462 * As a consequence, it's not as complicated as it sounds, just add
463 * any lower rates to the ACK rate bitmap.
465 if (IWL_RATE_11M_INDEX < lowest_present_cck)
466 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
467 if (IWL_RATE_5M_INDEX < lowest_present_cck)
468 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
469 if (IWL_RATE_2M_INDEX < lowest_present_cck)
470 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
471 /* 1M already there or needed so always add */
472 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
478 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
479 struct ieee80211_vif *vif,
480 struct iwl_mac_ctx_cmd *cmd,
483 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
484 struct ieee80211_chanctx_conf *chanctx;
485 u8 cck_ack_rates, ofdm_ack_rates;
488 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
490 cmd->action = cpu_to_le32(action);
493 case NL80211_IFTYPE_STATION:
495 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
497 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
499 case NL80211_IFTYPE_AP:
500 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
502 case NL80211_IFTYPE_MONITOR:
503 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
505 case NL80211_IFTYPE_P2P_DEVICE:
506 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
508 case NL80211_IFTYPE_ADHOC:
509 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
515 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
517 memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
518 if (vif->bss_conf.bssid)
519 memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN);
521 eth_broadcast_addr(cmd->bssid_addr);
524 chanctx = rcu_dereference(vif->chanctx_conf);
525 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
526 : IEEE80211_BAND_2GHZ,
527 &cck_ack_rates, &ofdm_ack_rates);
530 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
531 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
533 cmd->cck_short_preamble =
534 cpu_to_le32(vif->bss_conf.use_short_preamble ?
535 MAC_FLG_SHORT_PREAMBLE : 0);
537 cpu_to_le32(vif->bss_conf.use_short_slot ?
538 MAC_FLG_SHORT_SLOT : 0);
540 for (i = 0; i < AC_NUM; i++) {
541 cmd->ac[i].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min);
542 cmd->ac[i].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max);
543 cmd->ac[i].aifsn = mvmvif->queue_params[i].aifs;
544 cmd->ac[i].edca_txop =
545 cpu_to_le16(mvmvif->queue_params[i].txop * 32);
546 cmd->ac[i].fifos_mask = BIT(iwl_mvm_ac_to_tx_fifo[i]);
549 if (vif->bss_conf.qos)
550 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
552 if (vif->bss_conf.use_cts_prot)
553 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT |
554 MAC_PROT_FLG_SELF_CTS_EN);
557 * I think that we should enable these 2 flags regardless the HT PROT
558 * fields in the HT IE, but I am not sure. Someone knows whom to ask?...
560 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
561 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
562 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT |
563 MAC_PROT_FLG_FAT_PROT);
566 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
569 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
570 struct iwl_mac_ctx_cmd *cmd)
572 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
575 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
576 le32_to_cpu(cmd->action), ret);
581 * Fill the specific data for mac context of type station or p2p client
583 static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm,
584 struct ieee80211_vif *vif,
585 struct iwl_mac_data_sta *ctxt_sta)
587 /* We need the dtim_period to set the MAC as associated */
588 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period)
589 ctxt_sta->is_assoc = cpu_to_le32(1);
591 ctxt_sta->is_assoc = cpu_to_le32(0);
593 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
594 ctxt_sta->bi_reciprocal =
595 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
596 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
597 vif->bss_conf.dtim_period);
598 ctxt_sta->dtim_reciprocal =
599 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
600 vif->bss_conf.dtim_period));
602 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
603 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
606 static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm,
607 struct ieee80211_vif *vif,
610 struct iwl_mac_ctx_cmd cmd = {};
612 WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p);
614 /* Fill the common data for all mac context types */
615 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
617 /* Fill the data specific for station mode */
618 iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta);
620 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
623 static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm,
624 struct ieee80211_vif *vif,
627 struct iwl_mac_ctx_cmd cmd = {};
629 WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p);
631 /* Fill the common data for all mac context types */
632 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
634 /* Fill the data specific for station mode */
635 iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta);
637 cmd.p2p_sta.ctwin = cpu_to_le32(vif->bss_conf.p2p_ctwindow);
639 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
642 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
643 struct ieee80211_vif *vif,
646 struct iwl_mac_ctx_cmd cmd = {};
648 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
650 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
651 /* No other data to be filled */
652 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
655 struct iwl_mvm_go_iterator_data {
659 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
661 struct iwl_mvm_go_iterator_data *data = _data;
662 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
664 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->ap_active)
665 data->go_active = true;
668 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
669 struct ieee80211_vif *vif,
672 struct iwl_mac_ctx_cmd cmd = {};
673 struct iwl_mvm_go_iterator_data data = {};
675 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
677 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
679 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
680 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROMISC);
683 * This flag should be set to true when the P2P Device is
684 * discoverable and there is at least another active P2P GO. Settings
685 * this flag will allow the P2P Device to be discoverable on other
686 * channels in addition to its listen channel.
687 * Note that this flag should not be set in other cases as it opens the
688 * Rx filters on all MAC and increases the number of interrupts.
690 ieee80211_iterate_active_interfaces_atomic(
691 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
692 iwl_mvm_go_iterator, &data);
694 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
695 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
698 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
699 struct iwl_mac_beacon_cmd *beacon_cmd,
700 u8 *beacon, u32 frame_size)
703 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
705 /* The index is relative to frame start but we start looking at the
706 * variable-length part of the beacon. */
707 tim_idx = mgmt->u.beacon.variable - beacon;
709 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
710 while ((tim_idx < (frame_size - 2)) &&
711 (beacon[tim_idx] != WLAN_EID_TIM))
712 tim_idx += beacon[tim_idx+1] + 2;
714 /* If TIM field was found, set variables */
715 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
716 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
717 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
719 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
723 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
724 struct ieee80211_vif *vif,
725 struct sk_buff *beacon)
727 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
728 struct iwl_host_cmd cmd = {
729 .id = BEACON_TEMPLATE_CMD,
732 struct iwl_mac_beacon_cmd beacon_cmd = {};
733 struct ieee80211_tx_info *info;
737 if (WARN_ON(!beacon))
740 beacon_skb_len = beacon->len;
742 /* TODO: for now the beacon template id is set to be the mac context id.
743 * Might be better to handle it as another resource ... */
744 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
746 /* Set up TX command fields */
747 beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
748 beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
749 beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
750 beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
754 mvm->mgmt_last_antenna_idx =
755 iwl_mvm_next_antenna(mvm, mvm->nvm_data->valid_tx_ant,
756 mvm->mgmt_last_antenna_idx);
758 beacon_cmd.tx.rate_n_flags =
759 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
762 info = IEEE80211_SKB_CB(beacon);
764 if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
765 rate = IWL_FIRST_OFDM_RATE;
767 rate = IWL_FIRST_CCK_RATE;
768 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
770 beacon_cmd.tx.rate_n_flags |=
771 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
773 /* Set up TX beacon command fields */
774 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
779 cmd.len[0] = sizeof(beacon_cmd);
780 cmd.data[0] = &beacon_cmd;
781 cmd.dataflags[0] = 0;
782 cmd.len[1] = beacon_skb_len;
783 cmd.data[1] = beacon->data;
784 cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
786 return iwl_mvm_send_cmd(mvm, &cmd);
789 /* The beacon template for the AP/GO context has changed and needs update */
790 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
791 struct ieee80211_vif *vif)
793 struct sk_buff *beacon;
796 WARN_ON(vif->type != NL80211_IFTYPE_AP);
798 beacon = ieee80211_beacon_get(mvm->hw, vif);
802 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
803 dev_kfree_skb(beacon);
808 * Fill the specific data for mac context of type AP of P2P GO
810 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
811 struct ieee80211_vif *vif,
812 struct iwl_mac_data_ap *ctxt_ap)
814 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
817 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
818 ctxt_ap->bi_reciprocal =
819 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
820 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
821 vif->bss_conf.dtim_period);
822 ctxt_ap->dtim_reciprocal =
823 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
824 vif->bss_conf.dtim_period));
826 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
827 curr_dev_time = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
828 ctxt_ap->beacon_time = cpu_to_le32(curr_dev_time);
830 ctxt_ap->beacon_tsf = cpu_to_le64(curr_dev_time);
832 /* TODO: Assume that the beacon id == mac context id */
833 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
836 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
837 struct ieee80211_vif *vif,
840 struct iwl_mac_ctx_cmd cmd = {};
842 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
844 /* Fill the common data for all mac context types */
845 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
847 /* Fill the data specific for ap mode */
848 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap);
850 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
853 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
854 struct ieee80211_vif *vif,
857 struct iwl_mac_ctx_cmd cmd = {};
859 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
861 /* Fill the common data for all mac context types */
862 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
864 /* Fill the data specific for GO mode */
865 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap);
867 cmd.go.ctwin = cpu_to_le32(vif->bss_conf.p2p_ctwindow);
868 cmd.go.opp_ps_enabled = cpu_to_le32(!!vif->bss_conf.p2p_oppps);
870 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
873 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
877 case NL80211_IFTYPE_STATION:
879 return iwl_mvm_mac_ctxt_cmd_station(mvm, vif,
882 return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif,
885 case NL80211_IFTYPE_AP:
887 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
889 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
891 case NL80211_IFTYPE_MONITOR:
892 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
893 case NL80211_IFTYPE_P2P_DEVICE:
894 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
902 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
904 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
907 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
908 vif->addr, ieee80211_vif_type_p2p(vif)))
911 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD);
915 mvmvif->uploaded = true;
919 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
921 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
923 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
924 vif->addr, ieee80211_vif_type_p2p(vif)))
927 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY);
930 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
932 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
933 struct iwl_mac_ctx_cmd cmd;
936 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
937 vif->addr, ieee80211_vif_type_p2p(vif)))
940 memset(&cmd, 0, sizeof(cmd));
942 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
944 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
946 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
949 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
953 mvmvif->uploaded = false;