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.
  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, 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;
 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         return 0;
 339
 340 exit_fail:
 341         memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
 342         memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue));
 343         vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
 344         return ret;
 345 }
 346
 347 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 348 {
 349         u32 ac;
 350         int ret;
 351
 352         lockdep_assert_held(&mvm->mutex);
 353
 354         ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif);
 355         if (ret)
 356                 return ret;
 357
 358         switch (vif->type) {
 359         case NL80211_IFTYPE_P2P_DEVICE:
 360                 iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE,
 361                                         IWL_MVM_TX_FIFO_VO);
 362                 break;
 363         case NL80211_IFTYPE_AP:
 364                 iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue,
 365                                         IWL_MVM_TX_FIFO_VO);
 366                 /* fall through */
 367         default:
 368                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 369                         iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac],
 370                                                 iwl_mvm_ac_to_tx_fifo[ac]);
 371                 break;
 372         }
 373
 374         return 0;
 375 }
 376
 377 void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 378 {
 379         int ac;
 380
 381         lockdep_assert_held(&mvm->mutex);
 382
 383         switch (vif->type) {
 384         case NL80211_IFTYPE_P2P_DEVICE:
 385                 iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE);
 386                 break;
 387         case NL80211_IFTYPE_AP:
 388                 iwl_trans_txq_disable(mvm->trans, vif->cab_queue);
 389                 /* fall through */
 390         default:
 391                 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 392                         iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]);
 393         }
 394 }
 395
 396 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
 397                               struct ieee80211_vif *vif,
 398                               enum ieee80211_band band,
 399                               u8 *cck_rates, u8 *ofdm_rates)
 400 {
 401         struct ieee80211_supported_band *sband;
 402         unsigned long basic = vif->bss_conf.basic_rates;
 403         int lowest_present_ofdm = 100;
 404         int lowest_present_cck = 100;
 405         u8 cck = 0;
 406         u8 ofdm = 0;
 407         int i;
 408
 409         sband = mvm->hw->wiphy->bands[band];
 410
 411         for_each_set_bit(i, &basic, BITS_PER_LONG) {
 412                 int hw = sband->bitrates[i].hw_value;
 413                 if (hw >= IWL_FIRST_OFDM_RATE) {
 414                         ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
 415                         if (lowest_present_ofdm > hw)
 416                                 lowest_present_ofdm = hw;
 417                 } else {
 418                         BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
 419
 420                         cck |= BIT(hw);
 421                         if (lowest_present_cck > hw)
 422                                 lowest_present_cck = hw;
 423                 }
 424         }
 425
 426         /*
 427          * Now we've got the basic rates as bitmaps in the ofdm and cck
 428          * variables. This isn't sufficient though, as there might not
 429          * be all the right rates in the bitmap. E.g. if the only basic
 430          * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
 431          * and 6 Mbps because the 802.11-2007 standard says in 9.6:
 432          *
 433          *    [...] a STA responding to a received frame shall transmit
 434          *    its Control Response frame [...] at the highest rate in the
 435          *    BSSBasicRateSet parameter that is less than or equal to the
 436          *    rate of the immediately previous frame in the frame exchange
 437          *    sequence ([...]) and that is of the same modulation class
 438          *    ([...]) as the received frame. If no rate contained in the
 439          *    BSSBasicRateSet parameter meets these conditions, then the
 440          *    control frame sent in response to a received frame shall be
 441          *    transmitted at the highest mandatory rate of the PHY that is
 442          *    less than or equal to the rate of the received frame, and
 443          *    that is of the same modulation class as the received frame.
 444          *
 445          * As a consequence, we need to add all mandatory rates that are
 446          * lower than all of the basic rates to these bitmaps.
 447          */
 448
 449         if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
 450                 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
 451         if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
 452                 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
 453         /* 6M already there or needed so always add */
 454         ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
 455
 456         /*
 457          * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
 458          * Note, however:
 459          *  - if no CCK rates are basic, it must be ERP since there must
 460          *    be some basic rates at all, so they're OFDM => ERP PHY
 461          *    (or we're in 5 GHz, and the cck bitmap will never be used)
 462          *  - if 11M is a basic rate, it must be ERP as well, so add 5.5M
 463          *  - if 5.5M is basic, 1M and 2M are mandatory
 464          *  - if 2M is basic, 1M is mandatory
 465          *  - if 1M is basic, that's the only valid ACK rate.
 466          * As a consequence, it's not as complicated as it sounds, just add
 467          * any lower rates to the ACK rate bitmap.
 468          */
 469         if (IWL_RATE_11M_INDEX < lowest_present_cck)
 470                 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
 471         if (IWL_RATE_5M_INDEX < lowest_present_cck)
 472                 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
 473         if (IWL_RATE_2M_INDEX < lowest_present_cck)
 474                 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
 475         /* 1M already there or needed so always add */
 476         cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
 477
 478         *cck_rates = cck;
 479         *ofdm_rates = ofdm;
 480 }
 481
 482 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
 483                                         struct ieee80211_vif *vif,
 484                                         struct iwl_mac_ctx_cmd *cmd,
 485                                         u32 action)
 486 {
 487         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 488         struct ieee80211_chanctx_conf *chanctx;
 489         u8 cck_ack_rates, ofdm_ack_rates;
 490         int i;
 491
 492         cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 493                                                             mvmvif->color));
 494         cmd->action = cpu_to_le32(action);
 495
 496         switch (vif->type) {
 497         case NL80211_IFTYPE_STATION:
 498                 if (vif->p2p)
 499                         cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
 500                 else
 501                         cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
 502                 break;
 503         case NL80211_IFTYPE_AP:
 504                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
 505                 break;
 506         case NL80211_IFTYPE_MONITOR:
 507                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
 508                 break;
 509         case NL80211_IFTYPE_P2P_DEVICE:
 510                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
 511                 break;
 512         case NL80211_IFTYPE_ADHOC:
 513                 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
 514                 break;
 515         default:
 516                 WARN_ON_ONCE(1);
 517         }
 518
 519         cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
 520
 521         memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
 522         if (vif->bss_conf.bssid)
 523                 memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN);
 524         else
 525                 eth_broadcast_addr(cmd->bssid_addr);
 526
 527         rcu_read_lock();
 528         chanctx = rcu_dereference(vif->chanctx_conf);
 529         iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
 530                                             : IEEE80211_BAND_2GHZ,
 531                           &cck_ack_rates, &ofdm_ack_rates);
 532         rcu_read_unlock();
 533
 534         cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
 535         cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
 536
 537         cmd->cck_short_preamble =
 538                 cpu_to_le32(vif->bss_conf.use_short_preamble ?
 539                             MAC_FLG_SHORT_PREAMBLE : 0);
 540         cmd->short_slot =
 541                 cpu_to_le32(vif->bss_conf.use_short_slot ?
 542                             MAC_FLG_SHORT_SLOT : 0);
 543
 544         for (i = 0; i < AC_NUM; i++) {
 545                 cmd->ac[i].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min);
 546                 cmd->ac[i].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max);
 547                 cmd->ac[i].aifsn = mvmvif->queue_params[i].aifs;
 548                 cmd->ac[i].edca_txop =
 549                         cpu_to_le16(mvmvif->queue_params[i].txop * 32);
 550                 cmd->ac[i].fifos_mask = BIT(iwl_mvm_ac_to_tx_fifo[i]);
 551         }
 552
 553         if (vif->bss_conf.qos)
 554                 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
 555
 556         /* Don't use cts to self as the fw doesn't support it currently. */
 557         if (vif->bss_conf.use_cts_prot)
 558                 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
 559
 560         /*
 561          * I think that we should enable these 2 flags regardless the HT PROT
 562          * fields in the HT IE, but I am not sure. Someone knows whom to ask?...
 563          */
 564         if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) {
 565                 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
 566                 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT |
 567                                                      MAC_PROT_FLG_FAT_PROT);
 568         }
 569
 570         cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
 571 }
 572
 573 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
 574                                      struct iwl_mac_ctx_cmd *cmd)
 575 {
 576         int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
 577                                        sizeof(*cmd), cmd);
 578         if (ret)
 579                 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
 580                         le32_to_cpu(cmd->action), ret);
 581         return ret;
 582 }
 583
 584 /*
 585  * Fill the specific data for mac context of type station or p2p client
 586  */
 587 static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm,
 588                                           struct ieee80211_vif *vif,
 589                                           struct iwl_mac_data_sta *ctxt_sta)
 590 {
 591         /* We need the dtim_period to set the MAC as associated */
 592         if (vif->bss_conf.assoc && vif->bss_conf.dtim_period) {
 593                 u32 dtim_offs;
 594
 595                 /*
 596                  * The DTIM count counts down, so when it is N that means N
 597                  * more beacon intervals happen until the DTIM TBTT. Therefore
 598                  * add this to the current time. If that ends up being in the
 599                  * future, the firmware will handle it.
 600                  *
 601                  * Also note that the system_timestamp (which we get here as
 602                  * "sync_device_ts") and TSF timestamp aren't at exactly the
 603                  * same offset in the frame -- the TSF is at the first symbol
 604                  * of the TSF, the system timestamp is at signal acquisition
 605                  * time. This means there's an offset between them of at most
 606                  * a few hundred microseconds (24 * 8 bits + PLCP time gives
 607                  * 384us in the longest case), this is currently not relevant
 608                  * as the firmware wakes up around 2ms before the TBTT.
 609                  */
 610                 dtim_offs = vif->bss_conf.sync_dtim_count *
 611                                 vif->bss_conf.beacon_int;
 612                 /* convert TU to usecs */
 613                 dtim_offs *= 1024;
 614
 615                 ctxt_sta->dtim_tsf =
 616                         cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
 617                 ctxt_sta->dtim_time =
 618                         cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
 619
 620                 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
 621                                le64_to_cpu(ctxt_sta->dtim_tsf),
 622                                le32_to_cpu(ctxt_sta->dtim_time),
 623                                dtim_offs);
 624
 625                 ctxt_sta->is_assoc = cpu_to_le32(1);
 626         } else {
 627                 ctxt_sta->is_assoc = cpu_to_le32(0);
 628         }
 629
 630         ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
 631         ctxt_sta->bi_reciprocal =
 632                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
 633         ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
 634                                               vif->bss_conf.dtim_period);
 635         ctxt_sta->dtim_reciprocal =
 636                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
 637                                                vif->bss_conf.dtim_period));
 638
 639         ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
 640         ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
 641 }
 642
 643 static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm,
 644                                         struct ieee80211_vif *vif,
 645                                         u32 action)
 646 {
 647         struct iwl_mac_ctx_cmd cmd = {};
 648
 649         WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p);
 650
 651         /* Fill the common data for all mac context types */
 652         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 653
 654         /* Allow beacons to pass through as long as we are not associated,or we
 655          * do not have dtim period information */
 656         if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period)
 657                 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
 658         else
 659                 cmd.filter_flags &= ~cpu_to_le32(MAC_FILTER_IN_BEACON);
 660
 661         /* Fill the data specific for station mode */
 662         iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta);
 663
 664         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 665 }
 666
 667 static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm,
 668                                            struct ieee80211_vif *vif,
 669                                            u32 action)
 670 {
 671         struct iwl_mac_ctx_cmd cmd = {};
 672
 673         WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p);
 674
 675         /* Fill the common data for all mac context types */
 676         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 677
 678         /* Fill the data specific for station mode */
 679         iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta);
 680
 681         cmd.p2p_sta.ctwin = cpu_to_le32(vif->bss_conf.p2p_ctwindow);
 682
 683         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 684 }
 685
 686 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
 687                                          struct ieee80211_vif *vif,
 688                                          u32 action)
 689 {
 690         struct iwl_mac_ctx_cmd cmd = {};
 691
 692         WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
 693
 694         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 695
 696         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
 697                                        MAC_FILTER_IN_CONTROL_AND_MGMT |
 698                                        MAC_FILTER_IN_BEACON |
 699                                        MAC_FILTER_IN_PROBE_REQUEST);
 700
 701         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 702 }
 703
 704 struct iwl_mvm_go_iterator_data {
 705         bool go_active;
 706 };
 707
 708 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
 709 {
 710         struct iwl_mvm_go_iterator_data *data = _data;
 711         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 712
 713         if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->ap_active)
 714                 data->go_active = true;
 715 }
 716
 717 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
 718                                            struct ieee80211_vif *vif,
 719                                            u32 action)
 720 {
 721         struct iwl_mac_ctx_cmd cmd = {};
 722         struct iwl_mvm_go_iterator_data data = {};
 723
 724         WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
 725
 726         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 727
 728         cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
 729
 730         /* Override the filter flags to accept only probe requests */
 731         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 732
 733         /*
 734          * This flag should be set to true when the P2P Device is
 735          * discoverable and there is at least another active P2P GO. Settings
 736          * this flag will allow the P2P Device to be discoverable on other
 737          * channels in addition to its listen channel.
 738          * Note that this flag should not be set in other cases as it opens the
 739          * Rx filters on all MAC and increases the number of interrupts.
 740          */
 741         ieee80211_iterate_active_interfaces_atomic(
 742                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 743                 iwl_mvm_go_iterator, &data);
 744
 745         cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
 746         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 747 }
 748
 749 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
 750                                      struct iwl_mac_beacon_cmd *beacon_cmd,
 751                                      u8 *beacon, u32 frame_size)
 752 {
 753         u32 tim_idx;
 754         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 755
 756         /* The index is relative to frame start but we start looking at the
 757          * variable-length part of the beacon. */
 758         tim_idx = mgmt->u.beacon.variable - beacon;
 759
 760         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 761         while ((tim_idx < (frame_size - 2)) &&
 762                         (beacon[tim_idx] != WLAN_EID_TIM))
 763                 tim_idx += beacon[tim_idx+1] + 2;
 764
 765         /* If TIM field was found, set variables */
 766         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 767                 beacon_cmd->tim_idx = cpu_to_le32(tim_idx);
 768                 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]);
 769         } else {
 770                 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
 771         }
 772 }
 773
 774 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
 775                                         struct ieee80211_vif *vif,
 776                                         struct sk_buff *beacon)
 777 {
 778         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 779         struct iwl_host_cmd cmd = {
 780                 .id = BEACON_TEMPLATE_CMD,
 781                 .flags = CMD_ASYNC,
 782         };
 783         struct iwl_mac_beacon_cmd beacon_cmd = {};
 784         struct ieee80211_tx_info *info;
 785         u32 beacon_skb_len;
 786         u32 rate;
 787
 788         if (WARN_ON(!beacon))
 789                 return -EINVAL;
 790
 791         beacon_skb_len = beacon->len;
 792
 793         /* TODO: for now the beacon template id is set to be the mac context id.
 794          * Might be better to handle it as another resource ... */
 795         beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
 796
 797         /* Set up TX command fields */
 798         beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len);
 799         beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id;
 800         beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
 801         beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 802                                              TX_CMD_FLG_BT_DIS  |
 803                                              TX_CMD_FLG_TSF);
 804
 805         mvm->mgmt_last_antenna_idx =
 806                 iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw),
 807                                      mvm->mgmt_last_antenna_idx);
 808
 809         beacon_cmd.tx.rate_n_flags =
 810                 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
 811                             RATE_MCS_ANT_POS);
 812
 813         info = IEEE80211_SKB_CB(beacon);
 814
 815         if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) {
 816                 rate = IWL_FIRST_OFDM_RATE;
 817         } else {
 818                 rate = IWL_FIRST_CCK_RATE;
 819                 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
 820         }
 821         beacon_cmd.tx.rate_n_flags |=
 822                 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
 823
 824         /* Set up TX beacon command fields */
 825         iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd,
 826                                  beacon->data,
 827                                  beacon_skb_len);
 828
 829         /* Submit command */
 830         cmd.len[0] = sizeof(beacon_cmd);
 831         cmd.data[0] = &beacon_cmd;
 832         cmd.dataflags[0] = 0;
 833         cmd.len[1] = beacon_skb_len;
 834         cmd.data[1] = beacon->data;
 835         cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
 836
 837         return iwl_mvm_send_cmd(mvm, &cmd);
 838 }
 839
 840 /* The beacon template for the AP/GO context has changed and needs update */
 841 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
 842                                     struct ieee80211_vif *vif)
 843 {
 844         struct sk_buff *beacon;
 845         int ret;
 846
 847         WARN_ON(vif->type != NL80211_IFTYPE_AP);
 848
 849         beacon = ieee80211_beacon_get(mvm->hw, vif);
 850         if (!beacon)
 851                 return -ENOMEM;
 852
 853         ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
 854         dev_kfree_skb(beacon);
 855         return ret;
 856 }
 857
 858 /*
 859  * Fill the specific data for mac context of type AP of P2P GO
 860  */
 861 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
 862                                          struct ieee80211_vif *vif,
 863                                          struct iwl_mac_data_ap *ctxt_ap,
 864                                          bool add)
 865 {
 866         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 867
 868         ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
 869         ctxt_ap->bi_reciprocal =
 870                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int));
 871         ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
 872                                              vif->bss_conf.dtim_period);
 873         ctxt_ap->dtim_reciprocal =
 874                 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int *
 875                                                vif->bss_conf.dtim_period));
 876
 877         ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue);
 878
 879         /*
 880          * Only read the system time when the MAC is being added, when we
 881          * just modify the MAC then we should keep the time -- the firmware
 882          * can otherwise have a "jumping" TBTT.
 883          */
 884         if (add)
 885                 mvmvif->ap_beacon_time =
 886                         iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
 887
 888         ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
 889
 890         ctxt_ap->beacon_tsf = 0; /* unused */
 891
 892         /* TODO: Assume that the beacon id == mac context id */
 893         ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
 894 }
 895
 896 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
 897                                    struct ieee80211_vif *vif,
 898                                    u32 action)
 899 {
 900         struct iwl_mac_ctx_cmd cmd = {};
 901
 902         WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
 903
 904         /* Fill the common data for all mac context types */
 905         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 906
 907         /* Also enable probe requests to pass */
 908         cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 909
 910         /* Fill the data specific for ap mode */
 911         iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap,
 912                                      action == FW_CTXT_ACTION_ADD);
 913
 914         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 915 }
 916
 917 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
 918                                    struct ieee80211_vif *vif,
 919                                    u32 action)
 920 {
 921         struct iwl_mac_ctx_cmd cmd = {};
 922
 923         WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
 924
 925         /* Fill the common data for all mac context types */
 926         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action);
 927
 928         /* Fill the data specific for GO mode */
 929         iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap,
 930                                      action == FW_CTXT_ACTION_ADD);
 931
 932         cmd.go.ctwin = cpu_to_le32(vif->bss_conf.p2p_ctwindow);
 933         cmd.go.opp_ps_enabled = cpu_to_le32(!!vif->bss_conf.p2p_oppps);
 934
 935         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 936 }
 937
 938 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 939                                 u32 action)
 940 {
 941         switch (vif->type) {
 942         case NL80211_IFTYPE_STATION:
 943                 if (!vif->p2p)
 944                         return iwl_mvm_mac_ctxt_cmd_station(mvm, vif,
 945                                                             action);
 946                 else
 947                         return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif,
 948                                                                action);
 949                 break;
 950         case NL80211_IFTYPE_AP:
 951                 if (!vif->p2p)
 952                         return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
 953                 else
 954                         return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
 955                 break;
 956         case NL80211_IFTYPE_MONITOR:
 957                 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
 958         case NL80211_IFTYPE_P2P_DEVICE:
 959                 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
 960         default:
 961                 break;
 962         }
 963
 964         return -EOPNOTSUPP;
 965 }
 966
 967 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 968 {
 969         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 970         int ret;
 971
 972         if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
 973                       vif->addr, ieee80211_vif_type_p2p(vif)))
 974                 return -EIO;
 975
 976         ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD);
 977         if (ret)
 978                 return ret;
 979
 980         mvmvif->uploaded = true;
 981         return 0;
 982 }
 983
 984 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 985 {
 986         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 987
 988         if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
 989                       vif->addr, ieee80211_vif_type_p2p(vif)))
 990                 return -EIO;
 991
 992         return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY);
 993 }
 994
 995 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 996 {
 997         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 998         struct iwl_mac_ctx_cmd cmd;
 999         int ret;
1000
1001         if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1002                       vif->addr, ieee80211_vif_type_p2p(vif)))
1003                 return -EIO;
1004
1005         memset(&cmd, 0, sizeof(cmd));
1006
1007         cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1008                                                            mvmvif->color));
1009         cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1010
1011         ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC,
1012                                    sizeof(cmd), &cmd);
1013         if (ret) {
1014                 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1015                 return ret;
1016         }
1017
1018         mvmvif->uploaded = false;
1019         return 0;
1020 }
1021
1022 int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1023                             struct iwl_rx_cmd_buffer *rxb,
1024                             struct iwl_device_cmd *cmd)
1025 {
1026         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1027         struct iwl_beacon_notif *beacon = (void *)pkt->data;
1028         u16 status __maybe_unused =
1029                 le16_to_cpu(beacon->beacon_notify_hdr.status.status);
1030         u32 rate __maybe_unused =
1031                 le32_to_cpu(beacon->beacon_notify_hdr.initial_rate);
1032
1033         IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%16llX rate:%d\n",
1034                      status & TX_STATUS_MSK,
1035                      beacon->beacon_notify_hdr.failure_frame,
1036                      le64_to_cpu(beacon->tsf),
1037                      rate);
1038         return 0;
1039 }