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  *
  24  * The full GNU General Public License is included in this distribution
  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.
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  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, ac;
 197
 198         if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
 199                 return BIT(IWL_MVM_OFFCHANNEL_QUEUE);
 200
 201         qmask = (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) ?
 202                 BIT(vif->cab_queue) : 0;
 203
 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]);
 207
 208         return qmask;
 209 }
 210
 211 static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
 212                                                struct ieee80211_vif *vif)
 213 {
 214         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 215         struct iwl_mvm_mac_iface_iterator_data data = {
 216                 .mvm = mvm,
 217                 .vif = vif,
 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,
 222                 .used_hw_queues = {
 223                         BIT(IWL_MVM_OFFCHANNEL_QUEUE) |
 224                         BIT(IWL_MVM_AUX_QUEUE) |
 225                         BIT(IWL_MVM_CMD_QUEUE)
 226                 },
 227                 .found_vif = false,
 228         };
 229         u32 ac;
 230         int ret, i;
 231
 232         /*
 233          * Allocate a MAC ID and a TSF for this MAC, along with the queues
 234          * and other resources.
 235          */
 236
 237         /*
 238          * Before the iterator, we start with all MAC IDs and TSFs available.
 239          *
 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.
 246          */
 247
 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);
 251
 252         ieee80211_iterate_active_interfaces_atomic(
 253                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 254                 iwl_mvm_mac_iface_iterator, &data);
 255
 256         /*
 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
 264          * recovery.
 265          */
 266         if (data.found_vif)
 267                 return 0;
 268
 269         /* Therefore, in recovery, we can't get here */
 270         WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));
 271
 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");
 276                 ret = -EIO;
 277                 goto exit_fail;
 278         }
 279
 280         if (data.preferred_tsf != NUM_TSF_IDS)
 281                 mvmvif->tsf_id = data.preferred_tsf;
 282         else
 283                 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
 284                                                 NUM_TSF_IDS);
 285         if (mvmvif->tsf_id == NUM_TSF_IDS) {
 286                 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
 287                 ret = -EIO;
 288                 goto exit_fail;
 289         }
 290
 291         mvmvif->color = 0;
 292
 293         INIT_LIST_HEAD(&mvmvif->time_event_data.list);
 294         mvmvif->time_event_data.id = TE_MAX;
 295
 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;
 300
 301                 return 0;
 302         }
 303
 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);
 308
 309                 if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
 310                         IWL_ERR(mvm, "Failed to allocate queue\n");
 311                         ret = -EIO;
 312                         goto exit_fail;
 313                 }
 314
 315                 __set_bit(queue, data.used_hw_queues);
 316                 vif->hw_queue[ac] = queue;
 317         }
 318
 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);
 323
 324                 if (queue >= IWL_MVM_FIRST_AGG_QUEUE) {
 325                         IWL_ERR(mvm, "Failed to allocate cab queue\n");
 326                         ret = -EIO;
 327                         goto exit_fail;
 328                 }
 329
 330                 vif->cab_queue = queue;
 331         } else {
 332                 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
 333         }
 334
 335         mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT;
 336         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 337
 338         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
 339                 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
 340
 341         return 0;
 342
 343 exit_fail:
 344         memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
 345         memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
 346         vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
 347         return ret;
 348 }
 349
 350 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 351 {
 352         u32 ac;
 353         int ret;
 354
 355         lockdep_assert_held(&mvm->mutex);
 356
 357         ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
 358         if (ret)
 359                 return ret;
 360
 361         switch (vif->type) {
 362         case NL80211_IFTYPE_P2P_DEVICE:
 363                 iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
 364                                         IWL_MVM_TX_FIFO_VO);
 365                 break;
 366         case NL80211_IFTYPE_AP:
 367                 iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue,
 368                                         IWL_MVM_TX_FIFO_MCAST);
 369                 /* fall through */
 370         default:
 371                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 372                         iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac],
 373                                                 iwl_mvm_ac_to_tx_fifo[ac]);
 374                 break;
 375         }
 376
 377         return 0;
 378 }
 379
 380 void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 381 {
 382         int ac;
 383
 384         lockdep_assert_held(&mvm->mutex);
 385
 386         switch (vif->type) {
 387         case NL80211_IFTYPE_P2P_DEVICE:
 388                 iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE);
 389                 break;
 390         case NL80211_IFTYPE_AP:
 391                 iwl_trans_txq_disable(mvm->trans, vif->cab_queue);
 392                 /* fall through */
 393         default:
 394                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 395                         iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]);
 396         }
 397 }
 398
 399 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
 400                               struct ieee80211_vif *vif,
 401                               enum ieee80211_band band,
 402                               u8 *cck_rates, u8 *ofdm_rates)
 403 {
 404         struct ieee80211_supported_band *sband;
 405         unsigned long basic = vif->bss_conf.basic_rates;
 406         int lowest_present_ofdm = 100;
 407         int lowest_present_cck = 100;
 408         u8 cck = 0;
 409         u8 ofdm = 0;
 410         int i;
 411
 412         sband = mvm->hw->wiphy->bands[band];
 413
 414         for_each_set_bit(i, &basic, BITS_PER_LONG) {
 415                 int hw = sband->bitrates[i].hw_value;
 416                 if (hw >= IWL_FIRST_OFDM_RATE) {
 417                         ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
 418                         if (lowest_present_ofdm > hw)
 419                                 lowest_present_ofdm = hw;
 420                 } else {
 421                         BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
 422
 423                         cck |= BIT(hw);
 424                         if (lowest_present_cck > hw)
 425                                 lowest_present_cck = hw;
 426                 }
 427         }
 428
 429         /*
 430          * Now we've got the basic rates as bitmaps in the ofdm and cck
 431          * variables. This isn't sufficient though, as there might not
 432          * be all the right rates in the bitmap. E.g. if the only basic
 433          * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
 434          * and 6 Mbps because the 802.11-2007 standard says in 9.6:
 435          *
 436          *    [...] a STA responding to a received frame shall transmit
 437          *    its Control Response frame [...] at the highest rate in the
 438          *    BSSBasicRateSet parameter that is less than or equal to the
 439          *    rate of the immediately previous frame in the frame exchange
 440          *    sequence ([...]) and that is of the same modulation class
 441          *    ([...]) as the received frame. If no rate contained in the
 442          *    BSSBasicRateSet parameter meets these conditions, then the
 443          *    control frame sent in response to a received frame shall be
 444          *    transmitted at the highest mandatory rate of the PHY that is
 445          *    less than or equal to the rate of the received frame, and
 446          *    that is of the same modulation class as the received frame.
 447          *
 448          * As a consequence, we need to add all mandatory rates that are
 449          * lower than all of the basic rates to these bitmaps.
 450          */
 451
 452         if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
 453                 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
 454         if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
 455                 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
 456         /* 6M already there or needed so always add */
 457         ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
 458
 459         /*
 460          * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
 461          * Note, however:
 462          *  - if no CCK rates are basic, it must be ERP since there must
 463          *    be some basic rates at all, so they're OFDM => ERP PHY
 464          *    (or we're in 5 GHz, and the cck bitmap will never be used)
 465          *  - if 11M is a basic rate, it must be ERP as well, so add 5.5M
 466          *  - if 5.5M is basic, 1M and 2M are mandatory
 467          *  - if 2M is basic, 1M is mandatory
 468          *  - if 1M is basic, that's the only valid ACK rate.
 469          * As a consequence, it's not as complicated as it sounds, just add
 470          * any lower rates to the ACK rate bitmap.
 471          */
 472         if (IWL_RATE_11M_INDEX < lowest_present_cck)
 473                 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
 474         if (IWL_RATE_5M_INDEX < lowest_present_cck)
 475                 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
 476         if (IWL_RATE_2M_INDEX < lowest_present_cck)
 477                 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
 478         /* 1M already there or needed so always add */
 479         cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
 480
 481         *cck_rates = cck;
 482         *ofdm_rates = ofdm;
 483 }
 484
 485 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
 486                                         struct ieee80211_vif *vif,
 487                                         struct iwl_mac_ctx_cmd *cmd,
 488                                         u32 action)
 489 {
 490         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 491         struct ieee80211_chanctx_conf *chanctx;
 492         u8 cck_ack_rates, ofdm_ack_rates;
 493         int i;
 494
 495         cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 496                                                             mvmvif->color));
 497         cmd->action = cpu_to_le32(action);
 498
 499         switch (vif->type) {
 500         case NL80211_IFTYPE_STATION:
 501                 if (vif->p2p)
 502                         cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
 503                 else
 504                         cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
 505                 break;
 506         case NL80211_IFTYPE_AP:
 507                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
 508                 break;
 509         case NL80211_IFTYPE_MONITOR:
 510                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
 511                 break;
 512         case NL80211_IFTYPE_P2P_DEVICE:
 513                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
 514                 break;
 515         case NL80211_IFTYPE_ADHOC:
 516                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
 517                 break;
 518         default:
 519                 WARN_ON_ONCE(1);
 520         }
 521
 522         cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
 523
 524         memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
 525         if (vif->bss_conf.bssid)
 526                 memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN);
 527         else
 528                 eth_broadcast_addr(cmd->bssid_addr);
 529
 530         rcu_read_lock();
 531         chanctx = rcu_dereference(vif->chanctx_conf);
 532         iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
 533                                             : IEEE80211_BAND_2GHZ,
 534                           &cck_ack_rates, &ofdm_ack_rates);
 535         rcu_read_unlock();
 536
 537         cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
 538         cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
 539
 540         cmd->cck_short_preamble =
 541                 cpu_to_le32(vif->bss_conf.use_short_preamble ?
 542                             MAC_FLG_SHORT_PREAMBLE : 0);
 543         cmd->short_slot =
 544                 cpu_to_le32(vif->bss_conf.use_short_slot ?
 545                             MAC_FLG_SHORT_SLOT : 0);
 546
 547         for (i = 0; i < AC_NUM; i++) {
 548                 cmd->ac[i].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min);
 549                 cmd->ac[i].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max);
 550                 cmd->ac[i].aifsn = mvmvif->queue_params[i].aifs;
 551                 cmd->ac[i].edca_txop =
 552                         cpu_to_le16(mvmvif->queue_params[i].txop * 32);
 553                 cmd->ac[i].fifos_mask = BIT(iwl_mvm_ac_to_tx_fifo[i]);
 554         }
 555
 556         /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
 557         if (vif->type == NL80211_IFTYPE_AP)
 558                 cmd->ac[AC_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
 559
 560         if (vif->bss_conf.qos)
 561                 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
 562
 563         /* Don't use cts to self as the fw doesn't support it currently. */
 564         if (vif->bss_conf.use_cts_prot)
 565                 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
 566
 567         /*
 568          * I think that we should enable these 2 flags regardless the HT PROT
 569          * fields in the HT IE, but I am not sure. Someone knows whom to ask?...
 570          */
 571         if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
 572                 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
 573                 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT |
 574                                                      MAC_PROT_FLG_FAT_PROT);
 575         }
 576
 577         cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
 578 }
 579
 580 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
 581                                      struct iwl_mac_ctx_cmd *cmd)
 582 {
 583         int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
 584                                        sizeof(*cmd), cmd);
 585         if (ret)
 586                 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
 587                         le32_to_cpu(cmd->action), ret);
 588         return ret;
 589 }
 590
 591 /*
 592  * Fill the specific data for mac context of type station or p2p client
 593  */
 594 static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm,
 595                                           struct ieee80211_vif *vif,
 596                                           struct iwl_mac_data_sta *ctxt_sta,
 597                                           bool force_assoc_off)
 598 {
 599         /* We need the dtim_period to set the MAC as associated */
 600         if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
 601             !force_assoc_off) {
 602                 u32 dtim_offs;
 603
 604                 /*
 605                  * The DTIM count counts down, so when it is N that means N
 606                  * more beacon intervals happen until the DTIM TBTT. Therefore
 607                  * add this to the current time. If that ends up being in the
 608                  * future, the firmware will handle it.
 609                  *
 610                  * Also note that the system_timestamp (which we get here as
 611                  * "sync_device_ts") and TSF timestamp aren't at exactly the
 612                  * same offset in the frame -- the TSF is at the first symbol
 613                  * of the TSF, the system timestamp is at signal acquisition
 614                  * time. This means there's an offset between them of at most
 615                  * a few hundred microseconds (24 * 8 bits + PLCP time gives
 616                  * 384us in the longest case), this is currently not relevant
 617                  * as the firmware wakes up around 2ms before the TBTT.
 618                  */
 619                 dtim_offs = vif->bss_conf.sync_dtim_count *
 620                                 vif->bss_conf.beacon_int;
 621                 /* convert TU to usecs */
 622                 dtim_offs *= 1024;
 623
 624                 ctxt_sta->dtim_tsf =
 625                         cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
 626                 ctxt_sta->dtim_time =
 627                         cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
 628
 629                 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
 630                                le64_to_cpu(ctxt_sta->dtim_tsf),
 631                                le32_to_cpu(ctxt_sta->dtim_time),
 632                                dtim_offs);
 633
 634                 ctxt_sta->is_assoc = cpu_to_le32(1);
 635         } else {
 636                 ctxt_sta->is_assoc = cpu_to_le32(0);
 637         }
 638
 639         ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
 640         ctxt_sta->bi_reciprocal =
 641                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
 642         ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
 643                                               vif->bss_conf.dtim_period);
 644         ctxt_sta->dtim_reciprocal =
 645                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
 646                                                vif->bss_conf.dtim_period));
 647
 648         ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
 649         ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
 650 }
 651
 652 static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm,
 653                                         struct ieee80211_vif *vif,
 654                                         u32 action)
 655 {
 656         struct iwl_mac_ctx_cmd cmd = {};
 657
 658         WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p);
 659
 660         /* Fill the common data for all mac context types */
 661         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 662
 663         /* Allow beacons to pass through as long as we are not associated,or we
 664          * do not have dtim period information */
 665         if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period)
 666                 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
 667         else
 668                 cmd.filter_flags &= ~cpu_to_le32(MAC_FILTER_IN_BEACON);
 669
 670         /* Fill the data specific for station mode */
 671         iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta,
 672                                       action == FW_CTXT_ACTION_ADD);
 673
 674         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 675 }
 676
 677 static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm,
 678                                            struct ieee80211_vif *vif,
 679                                            u32 action)
 680 {
 681         struct iwl_mac_ctx_cmd cmd = {};
 682         struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
 683
 684         WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p);
 685
 686         /* Fill the common data for all mac context types */
 687         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 688
 689         /* Fill the data specific for station mode */
 690         iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta,
 691                                       action == FW_CTXT_ACTION_ADD);
 692
 693         cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
 694                                         IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
 695
 696         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 697 }
 698
 699 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
 700                                          struct ieee80211_vif *vif,
 701                                          u32 action)
 702 {
 703         struct iwl_mac_ctx_cmd cmd = {};
 704
 705         WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
 706
 707         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 708
 709         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
 710                                        MAC_FILTER_IN_CONTROL_AND_MGMT |
 711                                        MAC_FILTER_IN_BEACON |
 712                                        MAC_FILTER_IN_PROBE_REQUEST);
 713
 714         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 715 }
 716
 717 struct iwl_mvm_go_iterator_data {
 718         bool go_active;
 719 };
 720
 721 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
 722 {
 723         struct iwl_mvm_go_iterator_data *data = _data;
 724         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 725
 726         if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->ap_active)
 727                 data->go_active = true;
 728 }
 729
 730 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
 731                                            struct ieee80211_vif *vif,
 732                                            u32 action)
 733 {
 734         struct iwl_mac_ctx_cmd cmd = {};
 735         struct iwl_mvm_go_iterator_data data = {};
 736
 737         WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
 738
 739         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 740
 741         cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
 742
 743         /* Override the filter flags to accept only probe requests */
 744         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 745
 746         /*
 747          * This flag should be set to true when the P2P Device is
 748          * discoverable and there is at least another active P2P GO. Settings
 749          * this flag will allow the P2P Device to be discoverable on other
 750          * channels in addition to its listen channel.
 751          * Note that this flag should not be set in other cases as it opens the
 752          * Rx filters on all MAC and increases the number of interrupts.
 753          */
 754         ieee80211_iterate_active_interfaces_atomic(
 755                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 756                 iwl_mvm_go_iterator, &data);
 757
 758         cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
 759         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 760 }
 761
 762 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
 763                                      struct iwl_mac_beacon_cmd *beacon_cmd,
 764                                      u8 *beacon, u32 frame_size)
 765 {
 766         u32 tim_idx;
 767         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 768
 769         /* The index is relative to frame start but we start looking at the
 770          * variable-length part of the beacon. */
 771         tim_idx = mgmt->u.beacon.variable - beacon;
 772
 773         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 774         while ((tim_idx < (frame_size - 2)) &&
 775                         (beacon[tim_idx] != WLAN_EID_TIM))
 776                 tim_idx += beacon[tim_idx+1] + 2;
 777
 778         /* If TIM field was found, set variables */
 779         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 780                 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
 781                 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
 782         } else {
 783                 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
 784         }
 785 }
 786
 787 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
 788                                         struct ieee80211_vif *vif,
 789                                         struct sk_buff *beacon)
 790 {
 791         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 792         struct iwl_host_cmd cmd = {
 793                 .id = BEACON_TEMPLATE_CMD,
 794                 .flags = CMD_ASYNC,
 795         };
 796         struct iwl_mac_beacon_cmd beacon_cmd = {};
 797         struct ieee80211_tx_info *info;
 798         u32 beacon_skb_len;
 799         u32 rate;
 800
 801         if (WARN_ON(!beacon))
 802                 return -EINVAL;
 803
 804         beacon_skb_len = beacon->len;
 805
 806         /* TODO: for now the beacon template id is set to be the mac context id.
 807          * Might be better to handle it as another resource ... */
 808         beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
 809
 810         /* Set up TX command fields */
 811         beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
 812         beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
 813         beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
 814         beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 815                                              TX_CMD_FLG_BT_DIS  |
 816                                              TX_CMD_FLG_TSF);
 817
 818         mvm->mgmt_last_antenna_idx =
 819                 iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw),
 820                                      mvm->mgmt_last_antenna_idx);
 821
 822         beacon_cmd.tx.rate_n_flags =
 823                 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
 824                             RATE_MCS_ANT_POS);
 825
 826         info = IEEE80211_SKB_CB(beacon);
 827
 828         if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
 829                 rate = IWL_FIRST_OFDM_RATE;
 830         } else {
 831                 rate = IWL_FIRST_CCK_RATE;
 832                 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
 833         }
 834         beacon_cmd.tx.rate_n_flags |=
 835                 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
 836
 837         /* Set up TX beacon command fields */
 838         iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
 839                                  beacon->data,
 840                                  beacon_skb_len);
 841
 842         /* Submit command */
 843         cmd.len[0] = sizeof(beacon_cmd);
 844         cmd.data[0] = &beacon_cmd;
 845         cmd.dataflags[0] = 0;
 846         cmd.len[1] = beacon_skb_len;
 847         cmd.data[1] = beacon->data;
 848         cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
 849
 850         return iwl_mvm_send_cmd(mvm, &cmd);
 851 }
 852
 853 /* The beacon template for the AP/GO context has changed and needs update */
 854 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
 855                                     struct ieee80211_vif *vif)
 856 {
 857         struct sk_buff *beacon;
 858         int ret;
 859
 860         WARN_ON(vif->type != NL80211_IFTYPE_AP);
 861
 862         beacon = ieee80211_beacon_get(mvm->hw, vif);
 863         if (!beacon)
 864                 return -ENOMEM;
 865
 866         ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
 867         dev_kfree_skb(beacon);
 868         return ret;
 869 }
 870
 871 /*
 872  * Fill the specific data for mac context of type AP of P2P GO
 873  */
 874 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
 875                                          struct ieee80211_vif *vif,
 876                                          struct iwl_mac_data_ap *ctxt_ap,
 877                                          bool add)
 878 {
 879         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 880
 881         ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
 882         ctxt_ap->bi_reciprocal =
 883                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
 884         ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
 885                                              vif->bss_conf.dtim_period);
 886         ctxt_ap->dtim_reciprocal =
 887                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
 888                                                vif->bss_conf.dtim_period));
 889
 890         ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
 891
 892         /*
 893          * Only read the system time when the MAC is being added, when we
 894          * just modify the MAC then we should keep the time -- the firmware
 895          * can otherwise have a "jumping" TBTT.
 896          */
 897         if (add)
 898                 mvmvif->ap_beacon_time =
 899                         iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
 900
 901         ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
 902
 903         ctxt_ap->beacon_tsf = 0; /* unused */
 904
 905         /* TODO: Assume that the beacon id == mac context id */
 906         ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
 907 }
 908
 909 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
 910                                    struct ieee80211_vif *vif,
 911                                    u32 action)
 912 {
 913         struct iwl_mac_ctx_cmd cmd = {};
 914
 915         WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
 916
 917         /* Fill the common data for all mac context types */
 918         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 919
 920         /* Also enable probe requests to pass */
 921         cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 922
 923         /* Fill the data specific for ap mode */
 924         iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
 925                                      action == FW_CTXT_ACTION_ADD);
 926
 927         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 928 }
 929
 930 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
 931                                    struct ieee80211_vif *vif,
 932                                    u32 action)
 933 {
 934         struct iwl_mac_ctx_cmd cmd = {};
 935         struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
 936
 937         WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
 938
 939         /* Fill the common data for all mac context types */
 940         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 941
 942         /* Fill the data specific for GO mode */
 943         iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
 944                                      action == FW_CTXT_ACTION_ADD);
 945
 946         cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
 947                                         IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
 948         cmd.go.opp_ps_enabled =
 949                         cpu_to_le32(!!(noa->oppps_ctwindow &
 950                                         IEEE80211_P2P_OPPPS_ENABLE_BIT));
 951
 952         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 953 }
 954
 955 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 956                                 u32 action)
 957 {
 958         switch (vif->type) {
 959         case NL80211_IFTYPE_STATION:
 960                 if (!vif->p2p)
 961                         return iwl_mvm_mac_ctxt_cmd_station(mvm, vif,
 962                                                             action);
 963                 else
 964                         return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif,
 965                                                                action);
 966                 break;
 967         case NL80211_IFTYPE_AP:
 968                 if (!vif->p2p)
 969                         return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
 970                 else
 971                         return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
 972                 break;
 973         case NL80211_IFTYPE_MONITOR:
 974                 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
 975         case NL80211_IFTYPE_P2P_DEVICE:
 976                 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
 977         default:
 978                 break;
 979         }
 980
 981         return -EOPNOTSUPP;
 982 }
 983
 984 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 985 {
 986         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 987         int ret;
 988
 989         if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
 990                       vif->addr, ieee80211_vif_type_p2p(vif)))
 991                 return -EIO;
 992
 993         ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD);
 994         if (ret)
 995                 return ret;
 996
 997         mvmvif->uploaded = true;
 998         return 0;
 999 }
1000
1001 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1002 {
1003         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1004
1005         if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1006                       vif->addr, ieee80211_vif_type_p2p(vif)))
1007                 return -EIO;
1008
1009         return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY);
1010 }
1011
1012 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1013 {
1014         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1015         struct iwl_mac_ctx_cmd cmd;
1016         int ret;
1017
1018         if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1019                       vif->addr, ieee80211_vif_type_p2p(vif)))
1020                 return -EIO;
1021
1022         memset(&cmd, 0, sizeof(cmd));
1023
1024         cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1025                                                            mvmvif->color));
1026         cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1027
1028         ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
1029                                    sizeof(cmd), &cmd);
1030         if (ret) {
1031                 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1032                 return ret;
1033         }
1034
1035         mvmvif->uploaded = false;
1036         return 0;
1037 }
1038
1039 int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1040                             struct iwl_rx_cmd_buffer *rxb,
1041                             struct iwl_device_cmd *cmd)
1042 {
1043         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1044         struct iwl_beacon_notif *beacon = (void *)pkt->data;
1045         u16 status __maybe_unused =
1046                 le16_to_cpu(beacon->beacon_notify_hdr.status.status);
1047         u32 rate __maybe_unused =
1048                 le32_to_cpu(beacon->beacon_notify_hdr.initial_rate);
1049
1050         IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%16llX rate:%d\n",
1051                      status & TX_STATUS_MSK,
1052                      beacon->beacon_notify_hdr.failure_frame,
1053                      le64_to_cpu(beacon->tsf),
1054                      rate);
1055         return 0;
1056 }
1057
1058 static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac,
1059                                          struct ieee80211_vif *vif)
1060 {
1061         u16 *id = _data;
1062         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1063
1064         if (mvmvif->id == *id)
1065                 ieee80211_beacon_loss(vif);
1066 }
1067
1068 int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1069                                     struct iwl_rx_cmd_buffer *rxb,
1070                                     struct iwl_device_cmd *cmd)
1071 {
1072         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1073         struct iwl_missed_beacons_notif *missed_beacons = (void *)pkt->data;
1074         u16 id = (u16)le32_to_cpu(missed_beacons->mac_id);
1075
1076         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1077                                                    IEEE80211_IFACE_ITER_NORMAL,
1078                                                    iwl_mvm_beacon_loss_iterator,
1079                                                    &id);
1080         return 0;
1081 }