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

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
   4  * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
   5  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   6  */
   7 #include <linux/etherdevice.h>
   8 #include <linux/crc32.h>
   9 #include <net/mac80211.h>
  10 #include "iwl-io.h"
  11 #include "iwl-prph.h"
  12 #include "fw-api.h"
  13 #include "mvm.h"
  14 #include "time-event.h"
  15
  16 const u8 iwl_mvm_ac_to_tx_fifo[] = {
  17         IWL_MVM_TX_FIFO_VO,
  18         IWL_MVM_TX_FIFO_VI,
  19         IWL_MVM_TX_FIFO_BE,
  20         IWL_MVM_TX_FIFO_BK,
  21 };
  22
  23 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = {
  24         IWL_GEN2_EDCA_TX_FIFO_VO,
  25         IWL_GEN2_EDCA_TX_FIFO_VI,
  26         IWL_GEN2_EDCA_TX_FIFO_BE,
  27         IWL_GEN2_EDCA_TX_FIFO_BK,
  28         IWL_GEN2_TRIG_TX_FIFO_VO,
  29         IWL_GEN2_TRIG_TX_FIFO_VI,
  30         IWL_GEN2_TRIG_TX_FIFO_BE,
  31         IWL_GEN2_TRIG_TX_FIFO_BK,
  32 };
  33
  34 const u8 iwl_mvm_ac_to_bz_tx_fifo[] = {
  35         IWL_BZ_EDCA_TX_FIFO_VO,
  36         IWL_BZ_EDCA_TX_FIFO_VI,
  37         IWL_BZ_EDCA_TX_FIFO_BE,
  38         IWL_BZ_EDCA_TX_FIFO_BK,
  39         IWL_BZ_TRIG_TX_FIFO_VO,
  40         IWL_BZ_TRIG_TX_FIFO_VI,
  41         IWL_BZ_TRIG_TX_FIFO_BE,
  42         IWL_BZ_TRIG_TX_FIFO_BK,
  43 };
  44
  45 struct iwl_mvm_mac_iface_iterator_data {
  46         struct iwl_mvm *mvm;
  47         struct ieee80211_vif *vif;
  48         unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
  49         unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
  50         enum iwl_tsf_id preferred_tsf;
  51         bool found_vif;
  52 };
  53
  54 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
  55                                     struct ieee80211_vif *vif)
  56 {
  57         struct iwl_mvm_mac_iface_iterator_data *data = _data;
  58         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  59         u16 min_bi;
  60
  61         /* Skip the interface for which we are trying to assign a tsf_id  */
  62         if (vif == data->vif)
  63                 return;
  64
  65         /*
  66          * The TSF is a hardware/firmware resource, there are 4 and
  67          * the driver should assign and free them as needed. However,
  68          * there are cases where 2 MACs should share the same TSF ID
  69          * for the purpose of clock sync, an optimization to avoid
  70          * clock drift causing overlapping TBTTs/DTIMs for a GO and
  71          * client in the system.
  72          *
  73          * The firmware will decide according to the MAC type which
  74          * will be the leader and follower. Clients that need to sync
  75          * with a remote station will be the leader, and an AP or GO
  76          * will be the follower.
  77          *
  78          * Depending on the new interface type it can be following
  79          * or become the leader of an existing interface.
  80          */
  81         switch (data->vif->type) {
  82         case NL80211_IFTYPE_STATION:
  83                 /*
  84                  * The new interface is a client, so if the one we're iterating
  85                  * is an AP, and the beacon interval of the AP is a multiple or
  86                  * divisor of the beacon interval of the client, the same TSF
  87                  * should be used to avoid drift between the new client and
  88                  * existing AP. The existing AP will get drift updates from the
  89                  * new client context in this case.
  90                  */
  91                 if (vif->type != NL80211_IFTYPE_AP ||
  92                     data->preferred_tsf != NUM_TSF_IDS ||
  93                     !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
  94                         break;
  95
  96                 min_bi = min(data->vif->bss_conf.beacon_int,
  97                              vif->bss_conf.beacon_int);
  98
  99                 if (!min_bi)
 100                         break;
 101
 102                 if ((data->vif->bss_conf.beacon_int -
 103                      vif->bss_conf.beacon_int) % min_bi == 0) {
 104                         data->preferred_tsf = mvmvif->tsf_id;
 105                         return;
 106                 }
 107                 break;
 108
 109         case NL80211_IFTYPE_AP:
 110                 /*
 111                  * The new interface is AP/GO, so if its beacon interval is a
 112                  * multiple or a divisor of the beacon interval of an existing
 113                  * interface, it should get drift updates from an existing
 114                  * client or use the same TSF as an existing GO. There's no
 115                  * drift between TSFs internally but if they used different
 116                  * TSFs then a new client MAC could update one of them and
 117                  * cause drift that way.
 118                  */
 119                 if ((vif->type != NL80211_IFTYPE_AP &&
 120                      vif->type != NL80211_IFTYPE_STATION) ||
 121                     data->preferred_tsf != NUM_TSF_IDS ||
 122                     !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
 123                         break;
 124
 125                 min_bi = min(data->vif->bss_conf.beacon_int,
 126                              vif->bss_conf.beacon_int);
 127
 128                 if (!min_bi)
 129                         break;
 130
 131                 if ((data->vif->bss_conf.beacon_int -
 132                      vif->bss_conf.beacon_int) % min_bi == 0) {
 133                         data->preferred_tsf = mvmvif->tsf_id;
 134                         return;
 135                 }
 136                 break;
 137         default:
 138                 /*
 139                  * For all other interface types there's no need to
 140                  * take drift into account. Either they're exclusive
 141                  * like IBSS and monitor, or we don't care much about
 142                  * their TSF (like P2P Device), but we won't be able
 143                  * to share the TSF resource.
 144                  */
 145                 break;
 146         }
 147
 148         /*
 149          * Unless we exited above, we can't share the TSF resource
 150          * that the virtual interface we're iterating over is using
 151          * with the new one, so clear the available bit and if this
 152          * was the preferred one, reset that as well.
 153          */
 154         __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
 155
 156         if (data->preferred_tsf == mvmvif->tsf_id)
 157                 data->preferred_tsf = NUM_TSF_IDS;
 158 }
 159
 160 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
 161                                        struct ieee80211_vif *vif)
 162 {
 163         struct iwl_mvm_mac_iface_iterator_data *data = _data;
 164         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 165
 166         /* Iterator may already find the interface being added -- skip it */
 167         if (vif == data->vif) {
 168                 data->found_vif = true;
 169                 return;
 170         }
 171
 172         /* Mark MAC IDs as used by clearing the available bit, and
 173          * (below) mark TSFs as used if their existing use is not
 174          * compatible with the new interface type.
 175          * No locking or atomic bit operations are needed since the
 176          * data is on the stack of the caller function.
 177          */
 178         __clear_bit(mvmvif->id, data->available_mac_ids);
 179
 180         /* find a suitable tsf_id */
 181         iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
 182 }
 183
 184 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
 185                                     struct ieee80211_vif *vif)
 186 {
 187         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 188         struct iwl_mvm_mac_iface_iterator_data data = {
 189                 .mvm = mvm,
 190                 .vif = vif,
 191                 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
 192                 /* no preference yet */
 193                 .preferred_tsf = NUM_TSF_IDS,
 194         };
 195
 196         ieee80211_iterate_active_interfaces_atomic(
 197                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 198                 iwl_mvm_mac_tsf_id_iter, &data);
 199
 200         if (data.preferred_tsf != NUM_TSF_IDS)
 201                 mvmvif->tsf_id = data.preferred_tsf;
 202         else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
 203                 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
 204                                                 NUM_TSF_IDS);
 205 }
 206
 207 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 208 {
 209         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 210         struct iwl_mvm_mac_iface_iterator_data data = {
 211                 .mvm = mvm,
 212                 .vif = vif,
 213                 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
 214                 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
 215                 /* no preference yet */
 216                 .preferred_tsf = NUM_TSF_IDS,
 217                 .found_vif = false,
 218         };
 219         int ret, i;
 220
 221         lockdep_assert_held(&mvm->mutex);
 222
 223         /*
 224          * Allocate a MAC ID and a TSF for this MAC, along with the queues
 225          * and other resources.
 226          */
 227
 228         /*
 229          * Before the iterator, we start with all MAC IDs and TSFs available.
 230          *
 231          * During iteration, all MAC IDs are cleared that are in use by other
 232          * virtual interfaces, and all TSF IDs are cleared that can't be used
 233          * by this new virtual interface because they're used by an interface
 234          * that can't share it with the new one.
 235          * At the same time, we check if there's a preferred TSF in the case
 236          * that we should share it with another interface.
 237          */
 238
 239         /* MAC ID 0 should be used only for the managed/IBSS vif with non-MLO
 240          * FW API
 241          */
 242         if (!mvm->mld_api_is_used) {
 243                 switch (vif->type) {
 244                 case NL80211_IFTYPE_ADHOC:
 245                         break;
 246                 case NL80211_IFTYPE_STATION:
 247                         if (!vif->p2p)
 248                                 break;
 249                         fallthrough;
 250                 default:
 251                         __clear_bit(0, data.available_mac_ids);
 252                 }
 253         }
 254
 255         ieee80211_iterate_active_interfaces_atomic(
 256                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 257                 iwl_mvm_mac_iface_iterator, &data);
 258
 259         /*
 260          * In the case we're getting here during resume, it's similar to
 261          * firmware restart, and with RESUME_ALL the iterator will find
 262          * the vif being added already.
 263          * We don't want to reassign any IDs in either case since doing
 264          * so would probably assign different IDs (as interfaces aren't
 265          * necessarily added in the same order), but the old IDs were
 266          * preserved anyway, so skip ID assignment for both resume and
 267          * recovery.
 268          */
 269         if (data.found_vif)
 270                 return 0;
 271
 272         /* Therefore, in recovery, we can't get here */
 273         if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
 274                 return -EBUSY;
 275
 276         mvmvif->id = find_first_bit(data.available_mac_ids,
 277                                     NUM_MAC_INDEX_DRIVER);
 278         if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
 279                 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
 280                 ret = -EIO;
 281                 goto exit_fail;
 282         }
 283
 284         if (data.preferred_tsf != NUM_TSF_IDS)
 285                 mvmvif->tsf_id = data.preferred_tsf;
 286         else
 287                 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
 288                                                 NUM_TSF_IDS);
 289         if (mvmvif->tsf_id == NUM_TSF_IDS) {
 290                 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
 291                 ret = -EIO;
 292                 goto exit_fail;
 293         }
 294
 295         mvmvif->color = 0;
 296
 297         INIT_LIST_HEAD(&mvmvif->time_event_data.list);
 298         mvmvif->time_event_data.id = TE_MAX;
 299
 300         mvmvif->deflink.bcast_sta.sta_id = IWL_MVM_INVALID_STA;
 301         mvmvif->deflink.mcast_sta.sta_id = IWL_MVM_INVALID_STA;
 302         mvmvif->deflink.ap_sta_id = IWL_MVM_INVALID_STA;
 303
 304         /* No need to allocate data queues to P2P Device MAC and NAN.*/
 305         if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
 306                 return 0;
 307
 308         /* Allocate the CAB queue for softAP and GO interfaces */
 309         if (vif->type == NL80211_IFTYPE_AP ||
 310             vif->type == NL80211_IFTYPE_ADHOC) {
 311                 /*
 312                  * For TVQM this will be overwritten later with the FW assigned
 313                  * queue value (when queue is enabled).
 314                  */
 315                 mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
 316         }
 317
 318         for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
 319                 mvmvif->deflink.smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
 320
 321         return 0;
 322
 323 exit_fail:
 324         memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
 325         return ret;
 326 }
 327
 328 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
 329                               struct ieee80211_vif *vif,
 330                               enum nl80211_band band,
 331                               u8 *cck_rates, u8 *ofdm_rates)
 332 {
 333         struct ieee80211_supported_band *sband;
 334         unsigned long basic = vif->bss_conf.basic_rates;
 335         int lowest_present_ofdm = 100;
 336         int lowest_present_cck = 100;
 337         u8 cck = 0;
 338         u8 ofdm = 0;
 339         int i;
 340
 341         sband = mvm->hw->wiphy->bands[band];
 342
 343         for_each_set_bit(i, &basic, BITS_PER_LONG) {
 344                 int hw = sband->bitrates[i].hw_value;
 345                 if (hw >= IWL_FIRST_OFDM_RATE) {
 346                         ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
 347                         if (lowest_present_ofdm > hw)
 348                                 lowest_present_ofdm = hw;
 349                 } else {
 350                         BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
 351
 352                         cck |= BIT(hw);
 353                         if (lowest_present_cck > hw)
 354                                 lowest_present_cck = hw;
 355                 }
 356         }
 357
 358         /*
 359          * Now we've got the basic rates as bitmaps in the ofdm and cck
 360          * variables. This isn't sufficient though, as there might not
 361          * be all the right rates in the bitmap. E.g. if the only basic
 362          * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
 363          * and 6 Mbps because the 802.11-2007 standard says in 9.6:
 364          *
 365          *    [...] a STA responding to a received frame shall transmit
 366          *    its Control Response frame [...] at the highest rate in the
 367          *    BSSBasicRateSet parameter that is less than or equal to the
 368          *    rate of the immediately previous frame in the frame exchange
 369          *    sequence ([...]) and that is of the same modulation class
 370          *    ([...]) as the received frame. If no rate contained in the
 371          *    BSSBasicRateSet parameter meets these conditions, then the
 372          *    control frame sent in response to a received frame shall be
 373          *    transmitted at the highest mandatory rate of the PHY that is
 374          *    less than or equal to the rate of the received frame, and
 375          *    that is of the same modulation class as the received frame.
 376          *
 377          * As a consequence, we need to add all mandatory rates that are
 378          * lower than all of the basic rates to these bitmaps.
 379          */
 380
 381         if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
 382                 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
 383         if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
 384                 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
 385         /* 6M already there or needed so always add */
 386         ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
 387
 388         /*
 389          * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
 390          * Note, however:
 391          *  - if no CCK rates are basic, it must be ERP since there must
 392          *    be some basic rates at all, so they're OFDM => ERP PHY
 393          *    (or we're in 5 GHz, and the cck bitmap will never be used)
 394          *  - if 11M is a basic rate, it must be ERP as well, so add 5.5M
 395          *  - if 5.5M is basic, 1M and 2M are mandatory
 396          *  - if 2M is basic, 1M is mandatory
 397          *  - if 1M is basic, that's the only valid ACK rate.
 398          * As a consequence, it's not as complicated as it sounds, just add
 399          * any lower rates to the ACK rate bitmap.
 400          */
 401         if (IWL_RATE_11M_INDEX < lowest_present_cck)
 402                 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
 403         if (IWL_RATE_5M_INDEX < lowest_present_cck)
 404                 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
 405         if (IWL_RATE_2M_INDEX < lowest_present_cck)
 406                 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
 407         /* 1M already there or needed so always add */
 408         cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
 409
 410         *cck_rates = cck;
 411         *ofdm_rates = ofdm;
 412 }
 413
 414 void iwl_mvm_set_fw_basic_rates(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 415                                 struct ieee80211_bss_conf *link_conf,
 416                                 __le32 *cck_rates, __le32 *ofdm_rates)
 417 {
 418         struct ieee80211_chanctx_conf *chanctx;
 419         u8 cck_ack_rates = 0, ofdm_ack_rates = 0;
 420
 421         rcu_read_lock();
 422         chanctx = rcu_dereference(link_conf->chanctx_conf);
 423         iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
 424                                             : NL80211_BAND_2GHZ,
 425                           &cck_ack_rates, &ofdm_ack_rates);
 426
 427         rcu_read_unlock();
 428
 429         *cck_rates = cpu_to_le32((u32)cck_ack_rates);
 430         *ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
 431 }
 432
 433 void iwl_mvm_set_fw_protection_flags(struct iwl_mvm *mvm,
 434                                      struct ieee80211_vif *vif,
 435                                      struct ieee80211_bss_conf *link_conf,
 436                                      __le32 *protection_flags, u32 ht_flag,
 437                                      u32 tgg_flag)
 438 {
 439         /* for both sta and ap, ht_operation_mode hold the protection_mode */
 440         u8 protection_mode = link_conf->ht_operation_mode &
 441                                  IEEE80211_HT_OP_MODE_PROTECTION;
 442         bool ht_enabled = !!(link_conf->ht_operation_mode &
 443                              IEEE80211_HT_OP_MODE_PROTECTION);
 444
 445         if (link_conf->use_cts_prot)
 446                 *protection_flags |= cpu_to_le32(tgg_flag);
 447
 448         IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
 449                        link_conf->use_cts_prot,
 450                        link_conf->ht_operation_mode);
 451
 452         if (!ht_enabled)
 453                 return;
 454
 455         IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
 456         /*
 457          * See section 9.23.3.1 of IEEE 80211-2012.
 458          * Nongreenfield HT STAs Present is not supported.
 459          */
 460         switch (protection_mode) {
 461         case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
 462                 break;
 463         case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
 464         case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
 465                 *protection_flags |= cpu_to_le32(ht_flag);
 466                 break;
 467         case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
 468                 /* Protect when channel wider than 20MHz */
 469                 if (link_conf->chandef.width > NL80211_CHAN_WIDTH_20)
 470                         *protection_flags |= cpu_to_le32(ht_flag);
 471                 break;
 472         default:
 473                 IWL_ERR(mvm, "Illegal protection mode %d\n",
 474                         protection_mode);
 475                 break;
 476         }
 477 }
 478
 479 void iwl_mvm_set_fw_qos_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 480                                struct ieee80211_bss_conf *link_conf,
 481                                struct iwl_ac_qos *ac, __le32 *qos_flags)
 482 {
 483         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 484         struct iwl_mvm_vif_link_info *mvm_link =
 485                 mvmvif->link[link_conf->link_id];
 486         int i;
 487
 488         if (!mvm_link)
 489                 return;
 490
 491         for (i = 0; i < IEEE80211_NUM_ACS; i++) {
 492                 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
 493                 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
 494
 495                 ac[ucode_ac].cw_min =
 496                         cpu_to_le16(mvm_link->queue_params[i].cw_min);
 497                 ac[ucode_ac].cw_max =
 498                         cpu_to_le16(mvm_link->queue_params[i].cw_max);
 499                 ac[ucode_ac].edca_txop =
 500                         cpu_to_le16(mvm_link->queue_params[i].txop * 32);
 501                 ac[ucode_ac].aifsn = mvm_link->queue_params[i].aifs;
 502                 ac[ucode_ac].fifos_mask = BIT(txf);
 503         }
 504
 505         if (link_conf->qos)
 506                 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
 507
 508         if (link_conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
 509                 *qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
 510 }
 511
 512 int iwl_mvm_get_mac_type(struct ieee80211_vif *vif)
 513 {
 514         u32 mac_type = FW_MAC_TYPE_BSS_STA;
 515
 516         switch (vif->type) {
 517         case NL80211_IFTYPE_STATION:
 518                 if (vif->p2p)
 519                         mac_type = FW_MAC_TYPE_P2P_STA;
 520                 else
 521                         mac_type = FW_MAC_TYPE_BSS_STA;
 522                 break;
 523         case NL80211_IFTYPE_AP:
 524                 mac_type = FW_MAC_TYPE_GO;
 525                 break;
 526         case NL80211_IFTYPE_MONITOR:
 527                 mac_type = FW_MAC_TYPE_LISTENER;
 528                 break;
 529         case NL80211_IFTYPE_P2P_DEVICE:
 530                 mac_type = FW_MAC_TYPE_P2P_DEVICE;
 531                 break;
 532         case NL80211_IFTYPE_ADHOC:
 533                 mac_type = FW_MAC_TYPE_IBSS;
 534                 break;
 535         default:
 536                 WARN_ON_ONCE(1);
 537         }
 538         return mac_type;
 539 }
 540
 541 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
 542                                         struct ieee80211_vif *vif,
 543                                         struct iwl_mac_ctx_cmd *cmd,
 544                                         const u8 *bssid_override,
 545                                         u32 action)
 546 {
 547         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 548         const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
 549         u32 ht_flag;
 550
 551         cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 552                                                             mvmvif->color));
 553         cmd->action = cpu_to_le32(action);
 554         cmd->mac_type = cpu_to_le32(iwl_mvm_get_mac_type(vif));
 555
 556         cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
 557
 558         memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
 559
 560         if (bssid)
 561                 memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
 562         else
 563                 eth_broadcast_addr(cmd->bssid_addr);
 564
 565         iwl_mvm_set_fw_basic_rates(mvm, vif, &vif->bss_conf, &cmd->cck_rates,
 566                                    &cmd->ofdm_rates);
 567
 568         cmd->cck_short_preamble =
 569                 cpu_to_le32(vif->bss_conf.use_short_preamble ?
 570                             MAC_FLG_SHORT_PREAMBLE : 0);
 571         cmd->short_slot =
 572                 cpu_to_le32(vif->bss_conf.use_short_slot ?
 573                             MAC_FLG_SHORT_SLOT : 0);
 574
 575         cmd->filter_flags = 0;
 576
 577         iwl_mvm_set_fw_qos_params(mvm, vif, &vif->bss_conf, cmd->ac,
 578                                   &cmd->qos_flags);
 579
 580         /* The fw does not distinguish between ht and fat */
 581         ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
 582         iwl_mvm_set_fw_protection_flags(mvm, vif, &vif->bss_conf,
 583                                         &cmd->protection_flags,
 584                                         ht_flag, MAC_PROT_FLG_TGG_PROTECT);
 585 }
 586
 587 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
 588                                      struct iwl_mac_ctx_cmd *cmd)
 589 {
 590         int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
 591                                        sizeof(*cmd), cmd);
 592         if (ret)
 593                 IWL_ERR(mvm, "Failed to send MAC_CONTEXT_CMD (action:%d): %d\n",
 594                         le32_to_cpu(cmd->action), ret);
 595         return ret;
 596 }
 597
 598 void iwl_mvm_set_fw_dtim_tbtt(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 599                               struct ieee80211_bss_conf *link_conf,
 600                               __le64 *dtim_tsf, __le32 *dtim_time,
 601                               __le32 *assoc_beacon_arrive_time)
 602 {
 603         u32 dtim_offs;
 604
 605         /*
 606          * The DTIM count counts down, so when it is N that means N
 607          * more beacon intervals happen until the DTIM TBTT. Therefore
 608          * add this to the current time. If that ends up being in the
 609          * future, the firmware will handle it.
 610          *
 611          * Also note that the system_timestamp (which we get here as
 612          * "sync_device_ts") and TSF timestamp aren't at exactly the
 613          * same offset in the frame -- the TSF is at the first symbol
 614          * of the TSF, the system timestamp is at signal acquisition
 615          * time. This means there's an offset between them of at most
 616          * a few hundred microseconds (24 * 8 bits + PLCP time gives
 617          * 384us in the longest case), this is currently not relevant
 618          * as the firmware wakes up around 2ms before the TBTT.
 619          */
 620         dtim_offs = link_conf->sync_dtim_count *
 621                         link_conf->beacon_int;
 622         /* convert TU to usecs */
 623         dtim_offs *= 1024;
 624
 625         *dtim_tsf =
 626                 cpu_to_le64(link_conf->sync_tsf + dtim_offs);
 627         *dtim_time =
 628                 cpu_to_le32(link_conf->sync_device_ts + dtim_offs);
 629         *assoc_beacon_arrive_time =
 630                 cpu_to_le32(link_conf->sync_device_ts);
 631
 632         IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
 633                        le64_to_cpu(*dtim_tsf),
 634                        le32_to_cpu(*dtim_time),
 635                        dtim_offs);
 636 }
 637
 638 __le32 iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(struct iwl_mvm *mvm,
 639                                                     struct ieee80211_vif *vif)
 640 {
 641         struct ieee80211_p2p_noa_attr *noa =
 642                 &vif->bss_conf.p2p_noa_attr;
 643
 644         return cpu_to_le32(noa->oppps_ctwindow &
 645                         IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
 646 }
 647
 648 u32 iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(struct iwl_mvm *mvm,
 649                                             struct ieee80211_vif *vif)
 650 {
 651         u32 twt_policy = 0;
 652
 653         if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
 654                 twt_policy |= TWT_SUPPORTED;
 655         if (vif->bss_conf.twt_protected)
 656                 twt_policy |= PROTECTED_TWT_SUPPORTED;
 657         if (vif->bss_conf.twt_broadcast)
 658                 twt_policy |= BROADCAST_TWT_SUPPORTED;
 659
 660         return twt_policy;
 661 }
 662
 663 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
 664                                     struct ieee80211_vif *vif,
 665                                     u32 action, bool force_assoc_off,
 666                                     const u8 *bssid_override)
 667 {
 668         struct iwl_mac_ctx_cmd cmd = {};
 669         struct iwl_mac_data_sta *ctxt_sta;
 670
 671         WARN_ON(vif->type != NL80211_IFTYPE_STATION);
 672
 673         /* Fill the common data for all mac context types */
 674         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
 675
 676         /*
 677          * We always want to hear MCAST frames, if we're not authorized yet,
 678          * we'll drop them.
 679          */
 680         cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
 681
 682         if (vif->p2p) {
 683                 cmd.p2p_sta.ctwin =
 684                         iwl_mvm_mac_ctxt_cmd_p2p_sta_get_oppps_ctwin(mvm, vif);
 685
 686                 ctxt_sta = &cmd.p2p_sta.sta;
 687         } else {
 688                 ctxt_sta = &cmd.sta;
 689         }
 690
 691         /* We need the dtim_period to set the MAC as associated */
 692         if (vif->cfg.assoc && vif->bss_conf.dtim_period &&
 693             !force_assoc_off) {
 694                 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 695
 696                 iwl_mvm_set_fw_dtim_tbtt(mvm, vif, &vif->bss_conf,
 697                                          &ctxt_sta->dtim_tsf,
 698                                          &ctxt_sta->dtim_time,
 699                                          &ctxt_sta->assoc_beacon_arrive_time);
 700
 701                 ctxt_sta->is_assoc = cpu_to_le32(1);
 702
 703                 if (!mvmvif->authorized &&
 704                     fw_has_capa(&mvm->fw->ucode_capa,
 705                                 IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
 706                         ctxt_sta->data_policy |=
 707                                 cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
 708         } else {
 709                 ctxt_sta->is_assoc = cpu_to_le32(0);
 710
 711                 /* Allow beacons to pass through as long as we are not
 712                  * associated, or we do not have dtim period information.
 713                  */
 714                 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
 715         }
 716
 717         ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
 718         ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
 719                                               vif->bss_conf.dtim_period);
 720
 721         ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
 722         ctxt_sta->assoc_id = cpu_to_le32(vif->cfg.aid);
 723
 724         if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
 725                 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 726
 727         if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
 728                 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
 729                 ctxt_sta->data_policy |=
 730                         cpu_to_le32(iwl_mvm_mac_ctxt_cmd_sta_get_twt_policy(mvm, vif));
 731         }
 732
 733
 734         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 735 }
 736
 737 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
 738                                          struct ieee80211_vif *vif,
 739                                          u32 action)
 740 {
 741         struct iwl_mac_ctx_cmd cmd = {};
 742         u32 tfd_queue_msk = 0;
 743         int ret;
 744
 745         WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
 746
 747         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
 748
 749         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
 750                                        MAC_FILTER_IN_CONTROL_AND_MGMT |
 751                                        MAC_FILTER_IN_BEACON |
 752                                        MAC_FILTER_IN_PROBE_REQUEST |
 753                                        MAC_FILTER_IN_CRC32 |
 754                                        MAC_FILTER_ACCEPT_GRP);
 755         ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
 756
 757         /*
 758          * the queue mask is only relevant for old TX API, and
 759          * mvm->snif_queue isn't set here (it's still set to
 760          * IWL_MVM_INVALID_QUEUE so the BIT() of it is UB)
 761          */
 762         if (!iwl_mvm_has_new_tx_api(mvm))
 763                 tfd_queue_msk = BIT(mvm->snif_queue);
 764
 765         /* Allocate sniffer station */
 766         ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
 767                                        vif->type, IWL_STA_GENERAL_PURPOSE);
 768         if (ret)
 769                 return ret;
 770
 771         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 772 }
 773
 774 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
 775                                      struct ieee80211_vif *vif,
 776                                      u32 action)
 777 {
 778         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 779         struct iwl_mac_ctx_cmd cmd = {};
 780
 781         WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
 782
 783         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
 784
 785         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
 786                                        MAC_FILTER_IN_PROBE_REQUEST |
 787                                        MAC_FILTER_ACCEPT_GRP);
 788
 789         /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
 790         cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
 791
 792         /* TODO: Assumes that the beacon id == mac context id */
 793         cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
 794
 795         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 796 }
 797
 798 struct iwl_mvm_go_iterator_data {
 799         bool go_active;
 800 };
 801
 802 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
 803 {
 804         struct iwl_mvm_go_iterator_data *data = _data;
 805         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 806
 807         if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
 808             mvmvif->ap_ibss_active)
 809                 data->go_active = true;
 810 }
 811
 812 __le32 iwl_mac_ctxt_p2p_dev_has_extended_disc(struct iwl_mvm *mvm,
 813                                               struct ieee80211_vif *vif)
 814 {
 815         struct iwl_mvm_go_iterator_data data = {};
 816
 817         /*
 818          * This flag should be set to true when the P2P Device is
 819          * discoverable and there is at least another active P2P GO. Settings
 820          * this flag will allow the P2P Device to be discoverable on other
 821          * channels in addition to its listen channel.
 822          * Note that this flag should not be set in other cases as it opens the
 823          * Rx filters on all MAC and increases the number of interrupts.
 824          */
 825         ieee80211_iterate_active_interfaces_atomic(
 826                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 827                 iwl_mvm_go_iterator, &data);
 828
 829         return cpu_to_le32(data.go_active ? 1 : 0);
 830 }
 831
 832 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
 833                                            struct ieee80211_vif *vif,
 834                                            u32 action)
 835 {
 836         struct iwl_mac_ctx_cmd cmd = {};
 837
 838         WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
 839
 840         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
 841
 842         cmd.p2p_dev.is_disc_extended =
 843                 iwl_mac_ctxt_p2p_dev_has_extended_disc(mvm, vif);
 844
 845         /* Override the filter flags to accept only probe requests */
 846         cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 847
 848         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 849 }
 850
 851 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
 852                               __le32 *tim_index, __le32 *tim_size,
 853                               u8 *beacon, u32 frame_size)
 854 {
 855         u32 tim_idx;
 856         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 857
 858         /* The index is relative to frame start but we start looking at the
 859          * variable-length part of the beacon. */
 860         tim_idx = mgmt->u.beacon.variable - beacon;
 861
 862         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 863         while ((tim_idx < (frame_size - 2)) &&
 864                         (beacon[tim_idx] != WLAN_EID_TIM))
 865                 tim_idx += beacon[tim_idx+1] + 2;
 866
 867         /* If TIM field was found, set variables */
 868         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 869                 *tim_index = cpu_to_le32(tim_idx);
 870                 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]);
 871         } else {
 872                 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
 873         }
 874 }
 875
 876 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
 877 {
 878         struct ieee80211_mgmt *mgmt = (void *)beacon;
 879         const u8 *ie;
 880
 881         if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
 882                 return 0;
 883
 884         frame_size -= mgmt->u.beacon.variable - beacon;
 885
 886         ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
 887         if (!ie)
 888                 return 0;
 889
 890         return ie - beacon;
 891 }
 892
 893 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct iwl_mvm *mvm,
 894                                     struct ieee80211_tx_info *info,
 895                                     struct ieee80211_vif *vif)
 896 {
 897         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 898         struct ieee80211_supported_band *sband;
 899         unsigned long basic = vif->bss_conf.basic_rates;
 900         u16 lowest_cck = IWL_RATE_COUNT, lowest_ofdm = IWL_RATE_COUNT;
 901         u32 link_id = u32_get_bits(info->control.flags,
 902                                    IEEE80211_TX_CTRL_MLO_LINK);
 903         u8 band = info->band;
 904         u8 rate;
 905         u32 i;
 906
 907         if (link_id == IEEE80211_LINK_UNSPECIFIED && ieee80211_vif_is_mld(vif)) {
 908                 for (i = 0; i < ARRAY_SIZE(mvmvif->link); i++) {
 909                         if (!mvmvif->link[i])
 910                                 continue;
 911                         /* shouldn't do this when >1 link is active */
 912                         WARN_ON_ONCE(link_id != IEEE80211_LINK_UNSPECIFIED);
 913                         link_id = i;
 914                 }
 915         }
 916
 917         if (link_id < IEEE80211_LINK_UNSPECIFIED) {
 918                 struct ieee80211_bss_conf *link_conf;
 919
 920                 rcu_read_lock();
 921                 link_conf = rcu_dereference(vif->link_conf[link_id]);
 922                 if (link_conf) {
 923                         basic = link_conf->basic_rates;
 924                         if (link_conf->chandef.chan)
 925                                 band = link_conf->chandef.chan->band;
 926                 }
 927                 rcu_read_unlock();
 928         }
 929
 930         sband = mvm->hw->wiphy->bands[band];
 931         for_each_set_bit(i, &basic, BITS_PER_LONG) {
 932                 u16 hw = sband->bitrates[i].hw_value;
 933
 934                 if (hw >= IWL_FIRST_OFDM_RATE) {
 935                         if (lowest_ofdm > hw)
 936                                 lowest_ofdm = hw;
 937                 } else if (lowest_cck > hw) {
 938                         lowest_cck = hw;
 939                 }
 940         }
 941
 942         if (band == NL80211_BAND_2GHZ && !vif->p2p &&
 943             vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 944             !(info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)) {
 945                 if (lowest_cck != IWL_RATE_COUNT)
 946                         rate = lowest_cck;
 947                 else if (lowest_ofdm != IWL_RATE_COUNT)
 948                         rate = lowest_ofdm;
 949                 else
 950                         rate = IWL_RATE_1M_INDEX;
 951         } else if (lowest_ofdm != IWL_RATE_COUNT) {
 952                 rate = lowest_ofdm;
 953         } else {
 954                 rate = IWL_RATE_6M_INDEX;
 955         }
 956
 957         return rate;
 958 }
 959
 960 u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
 961 {
 962         u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
 963         bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
 964
 965         if (rate_idx <= IWL_FIRST_CCK_RATE)
 966                 flags |= is_new_rate ? IWL_MAC_BEACON_CCK
 967                           : IWL_MAC_BEACON_CCK_V1;
 968
 969         return flags;
 970 }
 971
 972 u8 iwl_mvm_mac_ctxt_get_beacon_rate(struct iwl_mvm *mvm,
 973                                     struct ieee80211_tx_info *info,
 974                                     struct ieee80211_vif *vif)
 975 {
 976         struct ieee80211_supported_band *sband =
 977                 mvm->hw->wiphy->bands[info->band];
 978         u32 legacy = vif->bss_conf.beacon_tx_rate.control[info->band].legacy;
 979
 980         /* if beacon rate was configured try using it */
 981         if (hweight32(legacy) == 1) {
 982                 u32 rate = ffs(legacy) - 1;
 983
 984                 return sband->bitrates[rate].hw_value;
 985         }
 986
 987         return iwl_mvm_mac_ctxt_get_lowest_rate(mvm, info, vif);
 988 }
 989
 990 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
 991                                     struct ieee80211_vif *vif,
 992                                     struct sk_buff *beacon,
 993                                     struct iwl_tx_cmd *tx)
 994 {
 995         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 996         struct ieee80211_tx_info *info;
 997         u8 rate;
 998         u32 tx_flags;
 999
1000         info = IEEE80211_SKB_CB(beacon);
1001
1002         /* Set up TX command fields */
1003         tx->len = cpu_to_le16((u16)beacon->len);
1004         tx->sta_id = mvmvif->deflink.bcast_sta.sta_id;
1005         tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
1006         tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
1007         tx_flags |=
1008                 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
1009                                                 TX_CMD_FLG_BT_PRIO_POS;
1010         tx->tx_flags = cpu_to_le32(tx_flags);
1011
1012         if (!fw_has_capa(&mvm->fw->ucode_capa,
1013                          IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION))
1014                 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
1015
1016         tx->rate_n_flags =
1017                 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
1018                             RATE_MCS_ANT_POS);
1019
1020         rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1021
1022         tx->rate_n_flags |=
1023                 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
1024         if (rate == IWL_FIRST_CCK_RATE)
1025                 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
1026
1027 }
1028
1029 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
1030                                      struct sk_buff *beacon,
1031                                      void *data, int len)
1032 {
1033         struct iwl_host_cmd cmd = {
1034                 .id = BEACON_TEMPLATE_CMD,
1035                 .flags = CMD_ASYNC,
1036         };
1037
1038         cmd.len[0] = len;
1039         cmd.data[0] = data;
1040         cmd.dataflags[0] = 0;
1041         cmd.len[1] = beacon->len;
1042         cmd.data[1] = beacon->data;
1043         cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
1044
1045         return iwl_mvm_send_cmd(mvm, &cmd);
1046 }
1047
1048 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
1049                                            struct ieee80211_vif *vif,
1050                                            struct sk_buff *beacon)
1051 {
1052         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1053         struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
1054
1055         iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1056
1057         beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1058
1059         if (vif->type == NL80211_IFTYPE_AP)
1060                 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1061                                          &beacon_cmd.tim_size,
1062                                          beacon->data, beacon->len);
1063
1064         return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1065                                                 sizeof(beacon_cmd));
1066 }
1067
1068 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
1069                                            struct ieee80211_vif *vif,
1070                                            struct sk_buff *beacon)
1071 {
1072         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1073         struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
1074
1075         iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
1076
1077         beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
1078
1079         if (vif->type == NL80211_IFTYPE_AP)
1080                 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1081                                          &beacon_cmd.tim_size,
1082                                          beacon->data, beacon->len);
1083
1084         beacon_cmd.csa_offset =
1085                 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1086                                                    WLAN_EID_CHANNEL_SWITCH,
1087                                                    beacon->len));
1088         beacon_cmd.ecsa_offset =
1089                 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1090                                                    WLAN_EID_EXT_CHANSWITCH_ANN,
1091                                                    beacon->len));
1092
1093         return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1094                                                 sizeof(beacon_cmd));
1095 }
1096
1097 bool iwl_mvm_enable_fils(struct iwl_mvm *mvm,
1098                          struct ieee80211_chanctx_conf *ctx)
1099 {
1100         if (IWL_MVM_DISABLE_AP_FILS)
1101                 return false;
1102
1103         if (cfg80211_channel_is_psc(ctx->def.chan))
1104                 return true;
1105
1106         return (ctx->def.chan->band == NL80211_BAND_6GHZ &&
1107                 ctx->def.width >= NL80211_CHAN_WIDTH_80);
1108 }
1109
1110 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
1111                                            struct ieee80211_vif *vif,
1112                                            struct sk_buff *beacon,
1113                                            struct ieee80211_bss_conf *link_conf)
1114 {
1115         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1116         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
1117         struct iwl_mac_beacon_cmd beacon_cmd = {};
1118         u8 rate = iwl_mvm_mac_ctxt_get_beacon_rate(mvm, info, vif);
1119         u16 flags;
1120         struct ieee80211_chanctx_conf *ctx;
1121         int channel;
1122         flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
1123
1124         /* Enable FILS on PSC channels only */
1125         rcu_read_lock();
1126         ctx = rcu_dereference(link_conf->chanctx_conf);
1127         channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
1128         WARN_ON(channel == 0);
1129         if (iwl_mvm_enable_fils(mvm, ctx)) {
1130                 flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
1131                                                0) > 10 ?
1132                         IWL_MAC_BEACON_FILS :
1133                         IWL_MAC_BEACON_FILS_V1;
1134                 beacon_cmd.short_ssid =
1135                         cpu_to_le32(~crc32_le(~0, vif->cfg.ssid,
1136                                               vif->cfg.ssid_len));
1137         }
1138         rcu_read_unlock();
1139
1140         beacon_cmd.flags = cpu_to_le16(flags);
1141         beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
1142
1143         if (WARN_ON(!mvmvif->link[link_conf->link_id]))
1144                 return -EINVAL;
1145
1146         if (iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD, 0) > 12)
1147                 beacon_cmd.link_id =
1148                         cpu_to_le32(mvmvif->link[link_conf->link_id]->fw_link_id);
1149         else
1150                 beacon_cmd.link_id = cpu_to_le32((u32)mvmvif->id);
1151
1152         if (vif->type == NL80211_IFTYPE_AP)
1153                 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
1154                                          &beacon_cmd.tim_size,
1155                                          beacon->data, beacon->len);
1156
1157         beacon_cmd.csa_offset =
1158                 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1159                                                    WLAN_EID_CHANNEL_SWITCH,
1160                                                    beacon->len));
1161         beacon_cmd.ecsa_offset =
1162                 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
1163                                                    WLAN_EID_EXT_CHANSWITCH_ANN,
1164                                                    beacon->len));
1165
1166         return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
1167                                                 sizeof(beacon_cmd));
1168 }
1169
1170 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
1171                                         struct ieee80211_vif *vif,
1172                                         struct sk_buff *beacon,
1173                                         struct ieee80211_bss_conf *link_conf)
1174 {
1175         if (WARN_ON(!beacon))
1176                 return -EINVAL;
1177
1178         if (IWL_MVM_NON_TRANSMITTING_AP)
1179                 return 0;
1180
1181         if (!fw_has_capa(&mvm->fw->ucode_capa,
1182                          IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
1183                 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
1184
1185         if (fw_has_api(&mvm->fw->ucode_capa,
1186                        IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
1187                 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon,
1188                                                        link_conf);
1189
1190         return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
1191 }
1192
1193 /* The beacon template for the AP/GO/IBSS has changed and needs update */
1194 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
1195                                     struct ieee80211_vif *vif,
1196                                     struct ieee80211_bss_conf *link_conf)
1197 {
1198         struct sk_buff *beacon;
1199         int ret;
1200
1201         WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1202                 vif->type != NL80211_IFTYPE_ADHOC);
1203
1204         beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL,
1205                                                link_conf->link_id);
1206         if (!beacon)
1207                 return -ENOMEM;
1208
1209 #ifdef CONFIG_IWLWIFI_DEBUGFS
1210         if (mvm->beacon_inject_active) {
1211                 dev_kfree_skb(beacon);
1212                 return -EBUSY;
1213         }
1214 #endif
1215
1216         ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon, link_conf);
1217         dev_kfree_skb(beacon);
1218         return ret;
1219 }
1220
1221 struct iwl_mvm_mac_ap_iterator_data {
1222         struct iwl_mvm *mvm;
1223         struct ieee80211_vif *vif;
1224         u32 beacon_device_ts;
1225         u16 beacon_int;
1226 };
1227
1228 /* Find the beacon_device_ts and beacon_int for a managed interface */
1229 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1230                                     struct ieee80211_vif *vif)
1231 {
1232         struct iwl_mvm_mac_ap_iterator_data *data = _data;
1233
1234         if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
1235                 return;
1236
1237         /* Station client has higher priority over P2P client*/
1238         if (vif->p2p && data->beacon_device_ts)
1239                 return;
1240
1241         data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1242         data->beacon_int = vif->bss_conf.beacon_int;
1243 }
1244
1245 /*
1246  * Fill the filter flags for mac context of type AP or P2P GO.
1247  */
1248 void iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(struct iwl_mvm *mvm,
1249                                               struct iwl_mvm_vif *mvmvif,
1250                                               __le32 *filter_flags,
1251                                               int accept_probe_req_flag,
1252                                               int accept_beacon_flag)
1253 {
1254         /*
1255          * in AP mode, pass probe requests and beacons from other APs
1256          * (needed for ht protection); when there're no any associated
1257          * station don't ask FW to pass beacons to prevent unnecessary
1258          * wake-ups.
1259          */
1260         *filter_flags |= cpu_to_le32(accept_probe_req_flag);
1261         if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1262                 *filter_flags |= cpu_to_le32(accept_beacon_flag);
1263                 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1264         } else {
1265                 IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1266         }
1267 }
1268
1269 /*
1270  * Fill the specific data for mac context of type AP of P2P GO
1271  */
1272 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1273                                          struct ieee80211_vif *vif,
1274                                          struct iwl_mac_ctx_cmd *cmd,
1275                                          struct iwl_mac_data_ap *ctxt_ap,
1276                                          bool add)
1277 {
1278         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1279         struct iwl_mvm_mac_ap_iterator_data data = {
1280                 .mvm = mvm,
1281                 .vif = vif,
1282                 .beacon_device_ts = 0
1283         };
1284
1285         /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1286         cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1287
1288         iwl_mvm_mac_ctxt_cmd_ap_set_filter_flags(mvm, mvmvif,
1289                                                  &cmd->filter_flags,
1290                                                  MAC_FILTER_IN_PROBE_REQUEST,
1291                                                  MAC_FILTER_IN_BEACON);
1292
1293         ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1294         ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1295                                              vif->bss_conf.dtim_period);
1296
1297         if (!fw_has_api(&mvm->fw->ucode_capa,
1298                         IWL_UCODE_TLV_API_STA_TYPE))
1299                 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->deflink.cab_queue);
1300
1301         /*
1302          * Only set the beacon time when the MAC is being added, when we
1303          * just modify the MAC then we should keep the time -- the firmware
1304          * can otherwise have a "jumping" TBTT.
1305          */
1306         if (add) {
1307                 /*
1308                  * If there is a station/P2P client interface which is
1309                  * associated, set the AP's TBTT far enough from the station's
1310                  * TBTT. Otherwise, set it to the current system time
1311                  */
1312                 ieee80211_iterate_active_interfaces_atomic(
1313                         mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1314                         iwl_mvm_mac_ap_iterator, &data);
1315
1316                 if (data.beacon_device_ts) {
1317                         u32 rand = get_random_u32_inclusive(36, 63);
1318                         mvmvif->ap_beacon_time = data.beacon_device_ts +
1319                                 ieee80211_tu_to_usec(data.beacon_int * rand /
1320                                                      100);
1321                 } else {
1322                         mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1323                 }
1324         }
1325
1326         ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1327         ctxt_ap->beacon_tsf = 0; /* unused */
1328
1329         /* TODO: Assume that the beacon id == mac context id */
1330         ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1331 }
1332
1333 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1334                                    struct ieee80211_vif *vif,
1335                                    u32 action)
1336 {
1337         struct iwl_mac_ctx_cmd cmd = {};
1338
1339         WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1340
1341         /* Fill the common data for all mac context types */
1342         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1343
1344         /* Fill the data specific for ap mode */
1345         iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1346                                      action == FW_CTXT_ACTION_ADD);
1347
1348         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1349 }
1350
1351 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1352                                    struct ieee80211_vif *vif,
1353                                    u32 action)
1354 {
1355         struct iwl_mac_ctx_cmd cmd = {};
1356         struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1357
1358         WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1359
1360         /* Fill the common data for all mac context types */
1361         iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1362
1363         /* Fill the data specific for GO mode */
1364         iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1365                                      action == FW_CTXT_ACTION_ADD);
1366
1367         cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1368                                         IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1369         cmd.go.opp_ps_enabled =
1370                         cpu_to_le32(!!(noa->oppps_ctwindow &
1371                                         IEEE80211_P2P_OPPPS_ENABLE_BIT));
1372
1373         return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1374 }
1375
1376 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1377                                 u32 action, bool force_assoc_off,
1378                                 const u8 *bssid_override)
1379 {
1380         switch (vif->type) {
1381         case NL80211_IFTYPE_STATION:
1382                 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1383                                                 force_assoc_off,
1384                                                 bssid_override);
1385         case NL80211_IFTYPE_AP:
1386                 if (!vif->p2p)
1387                         return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1388                 else
1389                         return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1390         case NL80211_IFTYPE_MONITOR:
1391                 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1392         case NL80211_IFTYPE_P2P_DEVICE:
1393                 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1394         case NL80211_IFTYPE_ADHOC:
1395                 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1396         default:
1397                 break;
1398         }
1399
1400         return -EOPNOTSUPP;
1401 }
1402
1403 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1404 {
1405         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1406         int ret;
1407
1408         if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1409                       vif->addr, ieee80211_vif_type_p2p(vif)))
1410                 return -EIO;
1411
1412         ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1413                                    true, NULL);
1414         if (ret)
1415                 return ret;
1416
1417         /* will only do anything at resume from D3 time */
1418         iwl_mvm_set_last_nonqos_seq(mvm, vif);
1419
1420         mvmvif->uploaded = true;
1421         return 0;
1422 }
1423
1424 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1425                              bool force_assoc_off, const u8 *bssid_override)
1426 {
1427         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1428
1429         if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1430                       vif->addr, ieee80211_vif_type_p2p(vif)))
1431                 return -EIO;
1432
1433         return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1434                                     force_assoc_off, bssid_override);
1435 }
1436
1437 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1438 {
1439         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1440         struct iwl_mac_ctx_cmd cmd;
1441         int ret;
1442
1443         if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1444                       vif->addr, ieee80211_vif_type_p2p(vif)))
1445                 return -EIO;
1446
1447         memset(&cmd, 0, sizeof(cmd));
1448
1449         cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1450                                                            mvmvif->color));
1451         cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1452
1453         ret = iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1454         if (ret)
1455                 return ret;
1456
1457         mvmvif->uploaded = false;
1458
1459         if (vif->type == NL80211_IFTYPE_MONITOR) {
1460                 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1461                 iwl_mvm_dealloc_snif_sta(mvm);
1462         }
1463
1464         return 0;
1465 }
1466
1467 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1468                                    struct ieee80211_vif *csa_vif, u32 gp2,
1469                                    bool tx_success)
1470 {
1471         struct iwl_mvm_vif *mvmvif =
1472                         iwl_mvm_vif_from_mac80211(csa_vif);
1473
1474         /* Don't start to countdown from a failed beacon */
1475         if (!tx_success && !mvmvif->csa_countdown)
1476                 return;
1477
1478         mvmvif->csa_countdown = true;
1479
1480         if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) {
1481                 int c = ieee80211_beacon_update_cntdwn(csa_vif);
1482
1483                 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif,
1484                                                 &csa_vif->bss_conf);
1485                 if (csa_vif->p2p &&
1486                     !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1487                     tx_success) {
1488                         u32 rel_time = (c + 1) *
1489                                        csa_vif->bss_conf.beacon_int -
1490                                        IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1491                         u32 apply_time = gp2 + rel_time * 1024;
1492
1493                         iwl_mvm_schedule_csa_period(mvm, csa_vif,
1494                                          IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1495                                          IWL_MVM_CHANNEL_SWITCH_MARGIN,
1496                                          apply_time);
1497                 }
1498         } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1499                 /* we don't have CSA NoA scheduled yet, switch now */
1500                 ieee80211_csa_finish(csa_vif);
1501                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1502         }
1503 }
1504
1505 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1506                              struct iwl_rx_cmd_buffer *rxb)
1507 {
1508         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1509         unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1510         struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1511         struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1512         struct ieee80211_vif *csa_vif;
1513         struct ieee80211_vif *tx_blocked_vif;
1514         struct agg_tx_status *agg_status;
1515         u16 status;
1516
1517         lockdep_assert_held(&mvm->mutex);
1518
1519         mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1520
1521         if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1522                 struct iwl_mvm_tx_resp *beacon_notify_hdr =
1523                         &beacon_v5->beacon_notify_hdr;
1524
1525                 if (unlikely(pkt_len < sizeof(*beacon_v5)))
1526                         return;
1527
1528                 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1529                 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1530                 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1531                 IWL_DEBUG_RX(mvm,
1532                              "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1533                              status, beacon_notify_hdr->failure_frame,
1534                              le64_to_cpu(beacon->tsf),
1535                              mvm->ap_last_beacon_gp2,
1536                              le32_to_cpu(beacon_notify_hdr->initial_rate));
1537         } else {
1538                 if (unlikely(pkt_len < sizeof(*beacon)))
1539                         return;
1540
1541                 mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1542                 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1543                 IWL_DEBUG_RX(mvm,
1544                              "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1545                              status, le64_to_cpu(beacon->tsf),
1546                              mvm->ap_last_beacon_gp2);
1547         }
1548
1549         csa_vif = rcu_dereference_protected(mvm->csa_vif,
1550                                             lockdep_is_held(&mvm->mutex));
1551         if (unlikely(csa_vif && csa_vif->bss_conf.csa_active))
1552                 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1553                                        (status == TX_STATUS_SUCCESS));
1554
1555         tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1556                                                 lockdep_is_held(&mvm->mutex));
1557         if (unlikely(tx_blocked_vif)) {
1558                 struct iwl_mvm_vif *mvmvif =
1559                         iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1560
1561                 /*
1562                  * The channel switch is started and we have blocked the
1563                  * stations. If this is the first beacon (the timeout wasn't
1564                  * set), set the unblock timeout, otherwise countdown
1565                  */
1566                 if (!mvm->csa_tx_block_bcn_timeout)
1567                         mvm->csa_tx_block_bcn_timeout =
1568                                 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1569                 else
1570                         mvm->csa_tx_block_bcn_timeout--;
1571
1572                 /* Check if the timeout is expired, and unblock tx */
1573                 if (mvm->csa_tx_block_bcn_timeout == 0) {
1574                         iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1575                         RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1576                 }
1577         }
1578 }
1579
1580 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1581                                      struct iwl_rx_cmd_buffer *rxb)
1582 {
1583         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1584         struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1585         struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1586         struct iwl_fw_dbg_trigger_tlv *trigger;
1587         u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1588         u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1589         struct ieee80211_vif *vif;
1590         /* Id can be mac/link id depending on the notification version */
1591         u32 id = le32_to_cpu(mb->link_id);
1592         union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1593         u32 mac_type;
1594         u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1595                                                MISSED_BEACONS_NOTIFICATION,
1596                                                0);
1597
1598         rcu_read_lock();
1599
1600         /* before version four the ID in the notification refers to mac ID */
1601         if (notif_ver < 4) {
1602                 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1603         } else {
1604                 struct ieee80211_bss_conf *bss_conf =
1605                         iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, id, true);
1606
1607                 if (!bss_conf)
1608                         goto out;
1609
1610                 vif = bss_conf->vif;
1611         }
1612
1613         IWL_DEBUG_INFO(mvm,
1614                        "missed bcn %s_id=%u, consecutive=%u (%u, %u, %u)\n",
1615                        notif_ver < 4 ? "mac" : "link",
1616                        id,
1617                        le32_to_cpu(mb->consec_missed_beacons),
1618                        le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1619                        le32_to_cpu(mb->num_recvd_beacons),
1620                        le32_to_cpu(mb->num_expected_beacons));
1621
1622         if (!vif)
1623                 goto out;
1624
1625         mac_type = iwl_mvm_get_mac_type(vif);
1626
1627         IWL_DEBUG_INFO(mvm, "missed beacon mac_type=%u,\n", mac_type);
1628
1629         mvm->trans->dbg.dump_file_name_ext_valid = true;
1630         snprintf(mvm->trans->dbg.dump_file_name_ext, IWL_FW_INI_MAX_NAME,
1631                  "MacId_%d_MacType_%d", id, mac_type);
1632
1633         rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1634         rx_missed_bcon_since_rx =
1635                 le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1636         /*
1637          * TODO: the threshold should be adjusted based on latency conditions,
1638          * and/or in case of a CS flow on one of the other AP vifs.
1639          */
1640         if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG)
1641                 iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1642         else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD)
1643                 ieee80211_beacon_loss(vif);
1644
1645         iwl_dbg_tlv_time_point(&mvm->fwrt,
1646                                IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1647
1648         trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1649                                         FW_DBG_TRIGGER_MISSED_BEACONS);
1650         if (!trigger)
1651                 goto out;
1652
1653         bcon_trig = (void *)trigger->data;
1654         stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1655         stop_trig_missed_bcon_since_rx =
1656                 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1657
1658         /* TODO: implement start trigger */
1659
1660         if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1661             rx_missed_bcon >= stop_trig_missed_bcon)
1662                 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1663
1664 out:
1665         rcu_read_unlock();
1666 }
1667
1668 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1669                                     struct iwl_rx_cmd_buffer *rxb)
1670 {
1671         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1672         unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1673         struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1674         struct ieee80211_rx_status rx_status;
1675         struct sk_buff *skb;
1676         u8 *data;
1677         u32 size = le32_to_cpu(sb->byte_count);
1678         int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1679                                         WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1680                                         0);
1681
1682         if (size == 0)
1683                 return;
1684
1685         /* handle per-version differences */
1686         if (ver <= 2) {
1687                 struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1688
1689                 if (pkt_len < struct_size(sb_v2, data, size))
1690                         return;
1691
1692                 data = sb_v2->data;
1693         } else {
1694                 struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1695
1696                 if (pkt_len < struct_size(sb_v3, data, size))
1697                         return;
1698
1699                 data = sb_v3->data;
1700         }
1701
1702         skb = alloc_skb(size, GFP_ATOMIC);
1703         if (!skb) {
1704                 IWL_ERR(mvm, "alloc_skb failed\n");
1705                 return;
1706         }
1707
1708         /* update rx_status according to the notification's metadata */
1709         memset(&rx_status, 0, sizeof(rx_status));
1710         rx_status.mactime = le64_to_cpu(sb->tsf);
1711         /* TSF as indicated by the firmware  is at INA time */
1712         rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1713         rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1714         rx_status.band =
1715                 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1716                                 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1717         rx_status.freq =
1718                 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1719                                                rx_status.band);
1720
1721         /* copy the data */
1722         skb_put_data(skb, data, size);
1723         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1724
1725         /* pass it as regular rx to mac80211 */
1726         ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1727 }
1728
1729 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1730                                    struct iwl_rx_cmd_buffer *rxb)
1731 {
1732         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1733         struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1734         struct iwl_probe_resp_data *old_data, *new_data;
1735         u32 id = le32_to_cpu(notif->mac_id);
1736         struct ieee80211_vif *vif;
1737         struct iwl_mvm_vif *mvmvif;
1738
1739         IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1740                        notif->noa_active, notif->csa_counter);
1741
1742         vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1743         if (!vif)
1744                 return;
1745
1746         mvmvif = iwl_mvm_vif_from_mac80211(vif);
1747
1748         new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1749         if (!new_data)
1750                 return;
1751
1752         memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1753
1754         /* noa_attr contains 1 reserved byte, need to substruct it */
1755         new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1756                             sizeof(new_data->notif.noa_attr) - 1;
1757
1758         /*
1759          * If it's a one time NoA, only one descriptor is needed,
1760          * adjust the length according to len_low.
1761          */
1762         if (new_data->notif.noa_attr.len_low ==
1763             sizeof(struct ieee80211_p2p_noa_desc) + 2)
1764                 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1765
1766         old_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
1767                                              lockdep_is_held(&mvmvif->mvm->mutex));
1768         rcu_assign_pointer(mvmvif->deflink.probe_resp_data, new_data);
1769
1770         if (old_data)
1771                 kfree_rcu(old_data, rcu_head);
1772
1773         if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1774             notif->csa_counter >= 1)
1775                 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1776 }
1777
1778 void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1779                                         struct iwl_rx_cmd_buffer *rxb)
1780 {
1781         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1782         struct ieee80211_vif *csa_vif, *vif;
1783         struct iwl_mvm_vif *mvmvif, *csa_mvmvif;
1784         u32 id_n_color, csa_id;
1785         /* save mac_id or link_id to use later to cancel csa if needed */
1786         u32 id;
1787         u32 mac_link_id = 0;
1788         u8 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1789                                                CHANNEL_SWITCH_START_NOTIF, 0);
1790         bool csa_active;
1791
1792         rcu_read_lock();
1793
1794         if (notif_ver < 3) {
1795                 struct iwl_channel_switch_start_notif_v1 *notif = (void *)pkt->data;
1796                 u32 mac_id;
1797
1798                 id_n_color = le32_to_cpu(notif->id_and_color);
1799                 mac_id = id_n_color & FW_CTXT_ID_MSK;
1800
1801                 vif = iwl_mvm_rcu_dereference_vif_id(mvm, mac_id, true);
1802                 if (!vif)
1803                         goto out_unlock;
1804
1805                 id = mac_id;
1806                 csa_active = vif->bss_conf.csa_active;
1807         } else {
1808                 struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1809                 u32 link_id = le32_to_cpu(notif->link_id);
1810                 struct ieee80211_bss_conf *bss_conf =
1811                         iwl_mvm_rcu_fw_link_id_to_link_conf(mvm, link_id, true);
1812
1813                 if (!bss_conf)
1814                         goto out_unlock;
1815
1816                 id = link_id;
1817                 mac_link_id = bss_conf->link_id;
1818                 vif = bss_conf->vif;
1819                 csa_active = bss_conf->csa_active;
1820         }
1821
1822         mvmvif = iwl_mvm_vif_from_mac80211(vif);
1823         if (notif_ver >= 3)
1824                 id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1825
1826         switch (vif->type) {
1827         case NL80211_IFTYPE_AP:
1828                 csa_vif = rcu_dereference(mvm->csa_vif);
1829                 if (WARN_ON(!csa_vif || !csa_vif->bss_conf.csa_active ||
1830                             csa_vif != vif))
1831                         goto out_unlock;
1832
1833                 csa_mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
1834                 csa_id = FW_CMD_ID_AND_COLOR(csa_mvmvif->id, csa_mvmvif->color);
1835                 if (WARN(csa_id != id_n_color,
1836                          "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1837                          csa_id, id_n_color))
1838                         goto out_unlock;
1839
1840                 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1841
1842                 schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1843                                       msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1844                                                        csa_vif->bss_conf.beacon_int));
1845
1846                 ieee80211_csa_finish(csa_vif);
1847
1848                 rcu_read_unlock();
1849
1850                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1851                 return;
1852         case NL80211_IFTYPE_STATION:
1853                 /*
1854                  * if we don't know about an ongoing channel switch,
1855                  * make sure FW cancels it
1856                  */
1857                 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1858                                             CHANNEL_SWITCH_ERROR_NOTIF,
1859                                             0) && !csa_active) {
1860                         IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1861                         iwl_mvm_cancel_channel_switch(mvm, vif, id);
1862                         break;
1863                 }
1864
1865                 iwl_mvm_csa_client_absent(mvm, vif);
1866                 cancel_delayed_work(&mvmvif->csa_work);
1867                 ieee80211_chswitch_done(vif, true, mac_link_id);
1868                 break;
1869         default:
1870                 /* should never happen */
1871                 WARN_ON_ONCE(1);
1872                 break;
1873         }
1874 out_unlock:
1875         rcu_read_unlock();
1876 }
1877
1878 void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1879                                         struct iwl_rx_cmd_buffer *rxb)
1880 {
1881         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1882         struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1883         struct ieee80211_vif *vif;
1884         u32 id = le32_to_cpu(notif->link_id);
1885         u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1886
1887         rcu_read_lock();
1888         vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1889         if (!vif) {
1890                 rcu_read_unlock();
1891                 return;
1892         }
1893
1894         IWL_DEBUG_INFO(mvm, "FW reports CSA error: id=%u, csa_err_mask=%u\n",
1895                        id, csa_err_mask);
1896         if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1897                             CS_ERR_LONG_DELAY_AFTER_CS |
1898                             CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1899                 ieee80211_channel_switch_disconnect(vif, true);
1900         rcu_read_unlock();
1901 }
1902
1903 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1904                                  struct iwl_rx_cmd_buffer *rxb)
1905 {
1906         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1907         struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1908         struct ieee80211_vif *vif;
1909         u32 id = le32_to_cpu(mb->mac_id);
1910
1911         IWL_DEBUG_INFO(mvm,
1912                        "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1913                        le32_to_cpu(mb->mac_id),
1914                        mb->num_beacon_intervals_elapsed,
1915                        mb->profile_periodicity);
1916
1917         rcu_read_lock();
1918
1919         vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1920         if (vif)
1921                 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1922
1923         rcu_read_unlock();
1924 }