drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
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  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63
  64 #include <linux/etherdevice.h>
  65 #include <net/mac80211.h>
  66 #include "iwl-io.h"
  67 #include "iwl-prph.h"
  68 #include "fw-api.h"
  69 #include "mvm.h"
  70
  71 const u8 iwl_mvm_ac_to_tx_fifo[] = {
  72         IWL_MVM_TX_FIFO_BK,
  73         IWL_MVM_TX_FIFO_BE,
  74         IWL_MVM_TX_FIFO_VI,
  75         IWL_MVM_TX_FIFO_VO,
  76 };
  77
  78 struct iwl_mvm_mac_iface_iterator_data {
  79         struct iwl_mvm *mvm;
  80         struct ieee80211_vif *vif;
  81         unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
  82         unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
  83         unsigned long used_hw_queues[BITS_TO_LONGS(IWL_MVM_FIRST_AGG_QUEUE)];
  84         enum iwl_tsf_id preferred_tsf;
  85         bool found_vif;
  86 };
  87
  88 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
  89                                        struct ieee80211_vif *vif)
  90 {
  91         struct iwl_mvm_mac_iface_iterator_data *data = _data;
  92         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  93         u32 ac;
  94
  95         /* Iterator may already find the interface being added -- skip it */
  96         if (vif == data->vif) {
  97                 data->found_vif = true;
  98                 return;
  99         }
 100
 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);
 105
 106         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 107                 __set_bit(vif->cab_queue, data->used_hw_queues);
 108
 109         /*
 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.
 115          */
 116         __clear_bit(mvmvif->id, data->available_mac_ids);
 117
 118         /*
 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.
 125          *
 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
 129          * will be the slave.
 130          *
 131          * Depending on the new interface type it can be slaved to
 132          * or become the master of an existing interface.
 133          */
 134         switch (data->vif->type) {
 135         case NL80211_IFTYPE_STATION:
 136                 /*
 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
 142                  */
 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;
 147                         return;
 148                 }
 149                 break;
 150         case NL80211_IFTYPE_AP:
 151                 /*
 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.
 158                  */
 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;
 164                         return;
 165                 }
 166                 break;
 167         default:
 168                 /*
 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.
 174                  */
 175                 break;
 176         }
 177
 178         /*
 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.
 183          */
 184         __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
 185
 186         if (data->preferred_tsf == mvmvif->tsf_id)
 187                 data->preferred_tsf = NUM_TSF_IDS;
 188 }
 189
 190 /*
 191  * Get the mask of the queus used by the vif
 192  */
 193 u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm,
 194                                 struct ieee80211_vif *vif)
 195 {
 196         u32 qmask = 0, ac;
 197
 198         if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
 199                 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
 200
 201         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 202                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 203                         qmask |= BIT(vif->hw_queue[ac]);
 204
 205         return qmask;
 206 }
 207
 208 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
 209                                                struct ieee80211_vif *vif)
 210 {
 211         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 212         struct iwl_mvm_mac_iface_iterator_data data = {
 213                 .mvm = mvm,
 214                 .vif = vif,
 215                 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
 216                 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
 217                 /* no preference yet */
 218                 .preferred_tsf = NUM_TSF_IDS,
 219                 .used_hw_queues = {
 220                         BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
 221                         BIT(IWL_MVM_AUX_QUEUE) |
 222                         BIT(IWL_MVM_CMD_QUEUE)
 223                 },
 224                 .found_vif = false,
 225         };
 226         u32 ac;
 227         int ret;
 228
 229         /*
 230          * Allocate a MAC ID and a TSF for this MAC, along with the queues
 231          * and other resources.
 232          */
 233
 234         /*
 235          * Before the iterator, we start with all MAC IDs and TSFs available.
 236          *
 237          * During iteration, all MAC IDs are cleared that are in use by other
 238          * virtual interfaces, and all TSF IDs are cleared that can't be used
 239          * by this new virtual interface because they're used by an interface
 240          * that can't share it with the new one.
 241          * At the same time, we check if there's a preferred TSF in the case
 242          * that we should share it with another interface.
 243          */
 244
 245         /* Currently, MAC ID 0 should be used only for the managed vif */
 246         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
 247                 __clear_bit(0, data.available_mac_ids);
 248
 249         ieee80211_iterate_active_interfaces_atomic(
 250                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 251                 iwl_mvm_mac_iface_iterator, &data);
 252
 253         /*
 254          * In the case we're getting here during resume, it's similar to
 255          * firmware restart, and with RESUME_ALL the iterator will find
 256          * the vif being added already.
 257          * We don't want to reassign any IDs in either case since doing
 258          * so would probably assign different IDs (as interfaces aren't
 259          * necessarily added in the same order), but the old IDs were
 260          * preserved anyway, so skip ID assignment for both resume and
 261          * recovery.
 262          */
 263         if (data.found_vif)
 264                 return 0;
 265
 266         /* Therefore, in recovery, we can't get here */
 267         WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
 268
 269         mvmvif->id = find_first_bit(data.available_mac_ids,
 270                                     NUM_MAC_INDEX_DRIVER);
 271         if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
 272                 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
 273                 ret = -EIO;
 274                 goto exit_fail;
 275         }
 276
 277         if (data.preferred_tsf != NUM_TSF_IDS)
 278                 mvmvif->tsf_id = data.preferred_tsf;
 279         else
 280                 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
 281                                                 NUM_TSF_IDS);
 282         if (mvmvif->tsf_id == NUM_TSF_IDS) {
 283                 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
 284                 ret = -EIO;
 285                 goto exit_fail;
 286         }
 287
 288         mvmvif->color = 0;
 289
 290         INIT_LIST_HEAD(&mvmvif->time_event_data.list);
 291         mvmvif->time_event_data.id = TE_MAX;
 292
 293         /* No need to allocate data queues to P2P Device MAC.*/
 294         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 295                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 296                         vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
 297
 298                 return 0;
 299         }
 300
 301         /* Find available queues, and allocate them to the ACs */
 302         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
 303                 u8 queue = find_first_zero_bit(data.used_hw_queues,
 304                                                IWL_MVM_FIRST_AGG_QUEUE);
 305
 306                 if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
 307                         IWL_ERR(mvm, "Failed to allocate queue\n");
 308                         ret = -EIO;
 309                         goto exit_fail;
 310                 }
 311
 312                 __set_bit(queue, data.used_hw_queues);
 313                 vif->hw_queue[ac] = queue;
 314         }
 315
 316         /* Allocate the CAB queue for softAP and GO interfaces */
 317         if (vif->type == NL80211_IFTYPE_AP) {
 318                 u8 queue = find_first_zero_bit(data.used_hw_queues,
 319                                                IWL_MVM_FIRST_AGG_QUEUE);
 320
 321                 if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
 322                         IWL_ERR(mvm, "Failed to allocate cab queue\n");
 323                         ret = -EIO;
 324                         goto exit_fail;
 325                 }
 326
 327                 vif->cab_queue = queue;
 328         } else {
 329                 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
 330         }
 331
 332         mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
 333         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 334
 335         return 0;
 336
 337 exit_fail:
 338         memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
 339         memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
 340         vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
 341         return ret;
 342 }
 343
 344 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 345 {
 346         u32 ac;
 347         int ret;
 348
 349         lockdep_assert_held(&mvm->mutex);
 350
 351         ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
 352         if (ret)
 353                 return ret;
 354
 355         switch (vif->type) {
 356         case NL80211_IFTYPE_P2P_DEVICE:
 357                 iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
 358                                         IWL_MVM_TX_FIFO_VO);
 359                 break;
 360         case NL80211_IFTYPE_AP:
 361                 iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue,
 362                                         IWL_MVM_TX_FIFO_MCAST);
 363                 /* fall through */
 364         default:
 365                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 366                         iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac],
 367                                                 iwl_mvm_ac_to_tx_fifo[ac]);
 368                 break;
 369         }
 370
 371         return 0;
 372 }
 373
 374 void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 375 {
 376         int ac;
 377
 378         lockdep_assert_held(&mvm->mutex);
 379
 380         switch (vif->type) {
 381         case NL80211_IFTYPE_P2P_DEVICE:
 382                 iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE);
 383                 break;
 384         case NL80211_IFTYPE_AP:
 385                 iwl_trans_txq_disable(mvm->trans, vif->cab_queue);
 386                 /* fall through */
 387         default:
 388                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 389                         iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]);
 390         }
 391 }
 392
 393 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
 394                               struct ieee80211_vif *vif,
 395                               enum ieee80211_band band,
 396                               u8 *cck_rates, u8 *ofdm_rates)
 397 {
 398         struct ieee80211_supported_band *sband;
 399         unsigned long basic = vif->bss_conf.basic_rates;
 400         int lowest_present_ofdm = 100;
 401         int lowest_present_cck = 100;
 402         u8 cck = 0;
 403         u8 ofdm = 0;
 404         int i;
 405
 406         sband = mvm->hw->wiphy->bands[band];
 407
 408         for_each_set_bit(i, &basic, BITS_PER_LONG) {
 409                 int hw = sband->bitrates[i].hw_value;
 410                 if (hw >= IWL_FIRST_OFDM_RATE) {
 411                         ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
 412                         if (lowest_present_ofdm > hw)
 413                                 lowest_present_ofdm = hw;
 414                 } else {
 415                         BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
 416
 417                         cck |= BIT(hw);
 418                         if (lowest_present_cck > hw)
 419                                 lowest_present_cck = hw;
 420                 }
 421         }
 422
 423         /*
 424          * Now we've got the basic rates as bitmaps in the ofdm and cck
 425          * variables. This isn't sufficient though, as there might not
 426          * be all the right rates in the bitmap. E.g. if the only basic
 427          * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
 428          * and 6 Mbps because the 802.11-2007 standard says in 9.6:
 429          *
 430          *    [...] a STA responding to a received frame shall transmit
 431          *    its Control Response frame [...] at the highest rate in the
 432          *    BSSBasicRateSet parameter that is less than or equal to the
 433          *    rate of the immediately previous frame in the frame exchange
 434          *    sequence ([...]) and that is of the same modulation class
 435          *    ([...]) as the received frame. If no rate contained in the
 436          *    BSSBasicRateSet parameter meets these conditions, then the
 437          *    control frame sent in response to a received frame shall be
 438          *    transmitted at the highest mandatory rate of the PHY that is
 439          *    less than or equal to the rate of the received frame, and
 440          *    that is of the same modulation class as the received frame.
 441          *
 442          * As a consequence, we need to add all mandatory rates that are
 443          * lower than all of the basic rates to these bitmaps.
 444          */
 445
 446         if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
 447                 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
 448         if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
 449                 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
 450         /* 6M already there or needed so always add */
 451         ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
 452
 453         /*
 454          * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
 455          * Note, however:
 456          *  - if no CCK rates are basic, it must be ERP since there must
 457          *    be some basic rates at all, so they're OFDM => ERP PHY
 458          *    (or we're in 5 GHz, and the cck bitmap will never be used)
 459          *  - if 11M is a basic rate, it must be ERP as well, so add 5.5M
 460          *  - if 5.5M is basic, 1M and 2M are mandatory
 461          *  - if 2M is basic, 1M is mandatory
 462          *  - if 1M is basic, that's the only valid ACK rate.
 463          * As a consequence, it's not as complicated as it sounds, just add
 464          * any lower rates to the ACK rate bitmap.
 465          */
 466         if (IWL_RATE_11M_INDEX < lowest_present_cck)
 467                 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
 468         if (IWL_RATE_5M_INDEX < lowest_present_cck)
 469                 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
 470         if (IWL_RATE_2M_INDEX < lowest_present_cck)
 471                 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
 472         /* 1M already there or needed so always add */
 473         cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
 474
 475         *cck_rates = cck;
 476         *ofdm_rates = ofdm;
 477 }
 478
 479 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
 480                                         struct ieee80211_vif *vif,
 481                                         struct iwl_mac_ctx_cmd *cmd,
 482                                         u32 action)
 483 {
 484         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 485         struct ieee80211_chanctx_conf *chanctx;
 486         u8 cck_ack_rates, ofdm_ack_rates;
 487         int i;
 488
 489         cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 490                                                             mvmvif->color));
 491         cmd->action = cpu_to_le32(action);
 492
 493         switch (vif->type) {
 494         case NL80211_IFTYPE_STATION:
 495                 if (vif->p2p)
 496                         cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
 497                 else
 498                         cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
 499                 break;
 500         case NL80211_IFTYPE_AP:
 501                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
 502                 break;
 503         case NL80211_IFTYPE_MONITOR:
 504                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
 505                 break;
 506         case NL80211_IFTYPE_P2P_DEVICE:
 507                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
 508                 break;
 509         case NL80211_IFTYPE_ADHOC:
 510                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
 511                 break;
 512         default:
 513                 WARN_ON_ONCE(1);
 514         }
 515
 516         cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
 517
 518         memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
 519         if (vif->bss_conf.bssid)
 520                 memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN);
 521         else
 522                 eth_broadcast_addr(cmd->bssid_addr);
 523
 524         rcu_read_lock();
 525         chanctx = rcu_dereference(vif->chanctx_conf);
 526         iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
 527                                             : IEEE80211_BAND_2GHZ,
 528                           &cck_ack_rates, &ofdm_ack_rates);
 529         rcu_read_unlock();
 530
 531         cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
 532         cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
 533
 534         cmd->cck_short_preamble =
 535                 cpu_to_le32(vif->bss_conf.use_short_preamble ?
 536                             MAC_FLG_SHORT_PREAMBLE : 0);
 537         cmd->short_slot =
 538                 cpu_to_le32(vif->bss_conf.use_short_slot ?
 539                             MAC_FLG_SHORT_SLOT : 0);
 540
 541         for (i = 0; i < AC_NUM; i++) {
 542                 cmd->ac[i].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min);
 543                 cmd->ac[i].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max);
 544                 cmd->ac[i].aifsn = mvmvif->queue_params[i].aifs;
 545                 cmd->ac[i].edca_txop =
 546                         cpu_to_le16(mvmvif->queue_params[i].txop * 32);
 547                 cmd->ac[i].fifos_mask = BIT(iwl_mvm_ac_to_tx_fifo[i]);
 548         }
 549
 550         /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
 551         if (vif->type == NL80211_IFTYPE_AP)
 552                 cmd->ac[AC_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
 553
 554         if (vif->bss_conf.qos)
 555                 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
 556
 557         /* Don't use cts to self as the fw doesn't support it currently. */
 558         if (vif->bss_conf.use_cts_prot)
 559                 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
 560
 561         /*
 562          * I think that we should enable these 2 flags regardless the HT PROT
 563          * fields in the HT IE, but I am not sure. Someone knows whom to ask?...
 564          */
 565         if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
 566                 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
 567                 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT |
 568                                                      MAC_PROT_FLG_FAT_PROT);
 569         }
 570
 571         cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
 572 }
 573
 574 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
 575                                      struct iwl_mac_ctx_cmd *cmd)
 576 {
 577         int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
 578                                        sizeof(*cmd), cmd);
 579         if (ret)
 580                 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
 581                         le32_to_cpu(cmd->action), ret);
 582         return ret;
 583 }
 584
 585 /*
 586  * Fill the specific data for mac context of type station or p2p client
 587  */
 588 static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm,
 589                                           struct ieee80211_vif *vif,
 590                                           struct iwl_mac_data_sta *ctxt_sta,
 591                                           bool force_assoc_off)
 592 {
 593         /* We need the dtim_period to set the MAC as associated */
 594         if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
 595             !force_assoc_off) {
 596                 u32 dtim_offs;
 597
 598                 /*
 599                  * The DTIM count counts down, so when it is N that means N
 600                  * more beacon intervals happen until the DTIM TBTT. Therefore
 601                  * add this to the current time. If that ends up being in the
 602                  * future, the firmware will handle it.
 603                  *
 604                  * Also note that the system_timestamp (which we get here as
 605                  * "sync_device_ts") and TSF timestamp aren't at exactly the
 606                  * same offset in the frame -- the TSF is at the first symbol
 607                  * of the TSF, the system timestamp is at signal acquisition
 608                  * time. This means there's an offset between them of at most
 609                  * a few hundred microseconds (24 * 8 bits + PLCP time gives
 610                  * 384us in the longest case), this is currently not relevant
 611                  * as the firmware wakes up around 2ms before the TBTT.
 612                  */
 613                 dtim_offs = vif->bss_conf.sync_dtim_count *
 614                                 vif->bss_conf.beacon_int;
 615                 /* convert TU to usecs */
 616                 dtim_offs *= 1024;
 617
 618                 ctxt_sta->dtim_tsf =
 619                         cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
 620                 ctxt_sta->dtim_time =
 621                         cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
 622
 623                 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
 624                                le64_to_cpu(ctxt_sta->dtim_tsf),
 625                                le32_to_cpu(ctxt_sta->dtim_time),
 626                                dtim_offs);
 627
 628                 ctxt_sta->is_assoc = cpu_to_le32(1);
 629         } else {
 630                 ctxt_sta->is_assoc = cpu_to_le32(0);
 631         }
 632
 633         ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
 634         ctxt_sta->bi_reciprocal =
 635                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
 636         ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
 637                                               vif->bss_conf.dtim_period);
 638         ctxt_sta->dtim_reciprocal =
 639                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
 640                                                vif->bss_conf.dtim_period));
 641
 642         ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
 643         ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
 644 }
 645
 646 static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm,
 647                                         struct ieee80211_vif *vif,
 648                                         u32 action)
 649 {
 650         struct iwl_mac_ctx_cmd cmd = {};
 651
 652         WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p);
 653
 654         /* Fill the common data for all mac context types */
 655         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 656
 657         /* Allow beacons to pass through as long as we are not associated,or we
 658          * do not have dtim period information */
 659         if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period)
 660                 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
 661         else
 662                 cmd.filter_flags &= ~cpu_to_le32(MAC_FILTER_IN_BEACON);
 663
 664         /* Fill the data specific for station mode */
 665         iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta,
 666                                       action == FW_CTXT_ACTION_ADD);
 667
 668         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 669 }
 670
 671 static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm,
 672                                            struct ieee80211_vif *vif,
 673                                            u32 action)
 674 {
 675         struct iwl_mac_ctx_cmd cmd = {};
 676         struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
 677
 678         WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p);
 679
 680         /* Fill the common data for all mac context types */
 681         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 682
 683         /* Fill the data specific for station mode */
 684         iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta,
 685                                       action == FW_CTXT_ACTION_ADD);
 686
 687         cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
 688                                         IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
 689
 690         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 691 }
 692
 693 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
 694                                          struct ieee80211_vif *vif,
 695                                          u32 action)
 696 {
 697         struct iwl_mac_ctx_cmd cmd = {};
 698
 699         WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
 700
 701         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 702
 703         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
 704                                        MAC_FILTER_IN_CONTROL_AND_MGMT |
 705                                        MAC_FILTER_IN_BEACON |
 706                                        MAC_FILTER_IN_PROBE_REQUEST);
 707
 708         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 709 }
 710
 711 struct iwl_mvm_go_iterator_data {
 712         bool go_active;
 713 };
 714
 715 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
 716 {
 717         struct iwl_mvm_go_iterator_data *data = _data;
 718         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 719
 720         if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->ap_active)
 721                 data->go_active = true;
 722 }
 723
 724 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
 725                                            struct ieee80211_vif *vif,
 726                                            u32 action)
 727 {
 728         struct iwl_mac_ctx_cmd cmd = {};
 729         struct iwl_mvm_go_iterator_data data = {};
 730
 731         WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
 732
 733         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 734
 735         cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
 736
 737         /* Override the filter flags to accept only probe requests */
 738         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 739
 740         /*
 741          * This flag should be set to true when the P2P Device is
 742          * discoverable and there is at least another active P2P GO. Settings
 743          * this flag will allow the P2P Device to be discoverable on other
 744          * channels in addition to its listen channel.
 745          * Note that this flag should not be set in other cases as it opens the
 746          * Rx filters on all MAC and increases the number of interrupts.
 747          */
 748         ieee80211_iterate_active_interfaces_atomic(
 749                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 750                 iwl_mvm_go_iterator, &data);
 751
 752         cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
 753         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 754 }
 755
 756 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
 757                                      struct iwl_mac_beacon_cmd *beacon_cmd,
 758                                      u8 *beacon, u32 frame_size)
 759 {
 760         u32 tim_idx;
 761         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 762
 763         /* The index is relative to frame start but we start looking at the
 764          * variable-length part of the beacon. */
 765         tim_idx = mgmt->u.beacon.variable - beacon;
 766
 767         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 768         while ((tim_idx < (frame_size - 2)) &&
 769                         (beacon[tim_idx] != WLAN_EID_TIM))
 770                 tim_idx += beacon[tim_idx+1] + 2;
 771
 772         /* If TIM field was found, set variables */
 773         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 774                 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
 775                 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
 776         } else {
 777                 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
 778         }
 779 }
 780
 781 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
 782                                         struct ieee80211_vif *vif,
 783                                         struct sk_buff *beacon)
 784 {
 785         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 786         struct iwl_host_cmd cmd = {
 787                 .id = BEACON_TEMPLATE_CMD,
 788                 .flags = CMD_ASYNC,
 789         };
 790         struct iwl_mac_beacon_cmd beacon_cmd = {};
 791         struct ieee80211_tx_info *info;
 792         u32 beacon_skb_len;
 793         u32 rate;
 794
 795         if (WARN_ON(!beacon))
 796                 return -EINVAL;
 797
 798         beacon_skb_len = beacon->len;
 799
 800         /* TODO: for now the beacon template id is set to be the mac context id.
 801          * Might be better to handle it as another resource ... */
 802         beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
 803
 804         /* Set up TX command fields */
 805         beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
 806         beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
 807         beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
 808         beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 809                                              TX_CMD_FLG_BT_DIS  |
 810                                              TX_CMD_FLG_TSF);
 811
 812         mvm->mgmt_last_antenna_idx =
 813                 iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw),
 814                                      mvm->mgmt_last_antenna_idx);
 815
 816         beacon_cmd.tx.rate_n_flags =
 817                 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
 818                             RATE_MCS_ANT_POS);
 819
 820         info = IEEE80211_SKB_CB(beacon);
 821
 822         if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
 823                 rate = IWL_FIRST_OFDM_RATE;
 824         } else {
 825                 rate = IWL_FIRST_CCK_RATE;
 826                 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
 827         }
 828         beacon_cmd.tx.rate_n_flags |=
 829                 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
 830
 831         /* Set up TX beacon command fields */
 832         iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
 833                                  beacon->data,
 834                                  beacon_skb_len);
 835
 836         /* Submit command */
 837         cmd.len[0] = sizeof(beacon_cmd);
 838         cmd.data[0] = &beacon_cmd;
 839         cmd.dataflags[0] = 0;
 840         cmd.len[1] = beacon_skb_len;
 841         cmd.data[1] = beacon->data;
 842         cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
 843
 844         return iwl_mvm_send_cmd(mvm, &cmd);
 845 }
 846
 847 /* The beacon template for the AP/GO context has changed and needs update */
 848 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
 849                                     struct ieee80211_vif *vif)
 850 {
 851         struct sk_buff *beacon;
 852         int ret;
 853
 854         WARN_ON(vif->type != NL80211_IFTYPE_AP);
 855
 856         beacon = ieee80211_beacon_get(mvm->hw, vif);
 857         if (!beacon)
 858                 return -ENOMEM;
 859
 860         ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
 861         dev_kfree_skb(beacon);
 862         return ret;
 863 }
 864
 865 /*
 866  * Fill the specific data for mac context of type AP of P2P GO
 867  */
 868 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
 869                                          struct ieee80211_vif *vif,
 870                                          struct iwl_mac_data_ap *ctxt_ap,
 871                                          bool add)
 872 {
 873         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 874
 875         ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
 876         ctxt_ap->bi_reciprocal =
 877                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
 878         ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
 879                                              vif->bss_conf.dtim_period);
 880         ctxt_ap->dtim_reciprocal =
 881                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
 882                                                vif->bss_conf.dtim_period));
 883
 884         ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
 885
 886         /*
 887          * Only read the system time when the MAC is being added, when we
 888          * just modify the MAC then we should keep the time -- the firmware
 889          * can otherwise have a "jumping" TBTT.
 890          */
 891         if (add)
 892                 mvmvif->ap_beacon_time =
 893                         iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
 894
 895         ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
 896
 897         ctxt_ap->beacon_tsf = 0; /* unused */
 898
 899         /* TODO: Assume that the beacon id == mac context id */
 900         ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
 901 }
 902
 903 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
 904                                    struct ieee80211_vif *vif,
 905                                    u32 action)
 906 {
 907         struct iwl_mac_ctx_cmd cmd = {};
 908
 909         WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
 910
 911         /* Fill the common data for all mac context types */
 912         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 913
 914         /* Also enable probe requests to pass */
 915         cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 916
 917         /* Fill the data specific for ap mode */
 918         iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
 919                                      action == FW_CTXT_ACTION_ADD);
 920
 921         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 922 }
 923
 924 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
 925                                    struct ieee80211_vif *vif,
 926                                    u32 action)
 927 {
 928         struct iwl_mac_ctx_cmd cmd = {};
 929         struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
 930
 931         WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
 932
 933         /* Fill the common data for all mac context types */
 934         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 935
 936         /* Fill the data specific for GO mode */
 937         iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
 938                                      action == FW_CTXT_ACTION_ADD);
 939
 940         cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
 941                                         IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
 942         cmd.go.opp_ps_enabled =
 943                         cpu_to_le32(!!(noa->oppps_ctwindow &
 944                                         IEEE80211_P2P_OPPPS_ENABLE_BIT));
 945
 946         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 947 }
 948
 949 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 950                                 u32 action)
 951 {
 952         switch (vif->type) {
 953         case NL80211_IFTYPE_STATION:
 954                 if (!vif->p2p)
 955                         return iwl_mvm_mac_ctxt_cmd_station(mvm, vif,
 956                                                             action);
 957                 else
 958                         return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif,
 959                                                                action);
 960                 break;
 961         case NL80211_IFTYPE_AP:
 962                 if (!vif->p2p)
 963                         return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
 964                 else
 965                         return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
 966                 break;
 967         case NL80211_IFTYPE_MONITOR:
 968                 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
 969         case NL80211_IFTYPE_P2P_DEVICE:
 970                 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
 971         default:
 972                 break;
 973         }
 974
 975         return -EOPNOTSUPP;
 976 }
 977
 978 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 979 {
 980         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 981         int ret;
 982
 983         if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
 984                       vif->addr, ieee80211_vif_type_p2p(vif)))
 985                 return -EIO;
 986
 987         ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD);
 988         if (ret)
 989                 return ret;
 990
 991         mvmvif->uploaded = true;
 992         return 0;
 993 }
 994
 995 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 996 {
 997         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 998
 999         if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1000                       vif->addr, ieee80211_vif_type_p2p(vif)))
1001                 return -EIO;
1002
1003         return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY);
1004 }
1005
1006 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1007 {
1008         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1009         struct iwl_mac_ctx_cmd cmd;
1010         int ret;
1011
1012         if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1013                       vif->addr, ieee80211_vif_type_p2p(vif)))
1014                 return -EIO;
1015
1016         memset(&cmd, 0, sizeof(cmd));
1017
1018         cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1019                                                            mvmvif->color));
1020         cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1021
1022         ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
1023                                    sizeof(cmd), &cmd);
1024         if (ret) {
1025                 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1026                 return ret;
1027         }
1028
1029         mvmvif->uploaded = false;
1030         return 0;
1031 }
1032
1033 int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1034                             struct iwl_rx_cmd_buffer *rxb,
1035                             struct iwl_device_cmd *cmd)
1036 {
1037         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1038         struct iwl_beacon_notif *beacon = (void *)pkt->data;
1039         u16 status __maybe_unused =
1040                 le16_to_cpu(beacon->beacon_notify_hdr.status.status);
1041         u32 rate __maybe_unused =
1042                 le32_to_cpu(beacon->beacon_notify_hdr.initial_rate);
1043
1044         IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%16llX rate:%d\n",
1045                      status & TX_STATUS_MSK,
1046                      beacon->beacon_notify_hdr.failure_frame,
1047                      le64_to_cpu(beacon->tsf),
1048                      rate);
1049         return 0;
1050 }