linux/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
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   1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2/*
   3 * Copyright (C) 2012-2014, 2018-2022 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
  16const 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
  23const 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
  34struct iwl_mvm_mac_iface_iterator_data {
  35        struct iwl_mvm *mvm;
  36        struct ieee80211_vif *vif;
  37        unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)];
  38        unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)];
  39        enum iwl_tsf_id preferred_tsf;
  40        bool found_vif;
  41};
  42
  43static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac,
  44                                    struct ieee80211_vif *vif)
  45{
  46        struct iwl_mvm_mac_iface_iterator_data *data = _data;
  47        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  48        u16 min_bi;
  49
  50        /* Skip the interface for which we are trying to assign a tsf_id  */
  51        if (vif == data->vif)
  52                return;
  53
  54        /*
  55         * The TSF is a hardware/firmware resource, there are 4 and
  56         * the driver should assign and free them as needed. However,
  57         * there are cases where 2 MACs should share the same TSF ID
  58         * for the purpose of clock sync, an optimization to avoid
  59         * clock drift causing overlapping TBTTs/DTIMs for a GO and
  60         * client in the system.
  61         *
  62         * The firmware will decide according to the MAC type which
  63         * will be the leader and follower. Clients that need to sync
  64         * with a remote station will be the leader, and an AP or GO
  65         * will be the follower.
  66         *
  67         * Depending on the new interface type it can be following
  68         * or become the leader of an existing interface.
  69         */
  70        switch (data->vif->type) {
  71        case NL80211_IFTYPE_STATION:
  72                /*
  73                 * The new interface is a client, so if the one we're iterating
  74                 * is an AP, and the beacon interval of the AP is a multiple or
  75                 * divisor of the beacon interval of the client, the same TSF
  76                 * should be used to avoid drift between the new client and
  77                 * existing AP. The existing AP will get drift updates from the
  78                 * new client context in this case.
  79                 */
  80                if (vif->type != NL80211_IFTYPE_AP ||
  81                    data->preferred_tsf != NUM_TSF_IDS ||
  82                    !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
  83                        break;
  84
  85                min_bi = min(data->vif->bss_conf.beacon_int,
  86                             vif->bss_conf.beacon_int);
  87
  88                if (!min_bi)
  89                        break;
  90
  91                if ((data->vif->bss_conf.beacon_int -
  92                     vif->bss_conf.beacon_int) % min_bi == 0) {
  93                        data->preferred_tsf = mvmvif->tsf_id;
  94                        return;
  95                }
  96                break;
  97
  98        case NL80211_IFTYPE_AP:
  99                /*
 100                 * The new interface is AP/GO, so if its beacon interval is a
 101                 * multiple or a divisor of the beacon interval of an existing
 102                 * interface, it should get drift updates from an existing
 103                 * client or use the same TSF as an existing GO. There's no
 104                 * drift between TSFs internally but if they used different
 105                 * TSFs then a new client MAC could update one of them and
 106                 * cause drift that way.
 107                 */
 108                if ((vif->type != NL80211_IFTYPE_AP &&
 109                     vif->type != NL80211_IFTYPE_STATION) ||
 110                    data->preferred_tsf != NUM_TSF_IDS ||
 111                    !test_bit(mvmvif->tsf_id, data->available_tsf_ids))
 112                        break;
 113
 114                min_bi = min(data->vif->bss_conf.beacon_int,
 115                             vif->bss_conf.beacon_int);
 116
 117                if (!min_bi)
 118                        break;
 119
 120                if ((data->vif->bss_conf.beacon_int -
 121                     vif->bss_conf.beacon_int) % min_bi == 0) {
 122                        data->preferred_tsf = mvmvif->tsf_id;
 123                        return;
 124                }
 125                break;
 126        default:
 127                /*
 128                 * For all other interface types there's no need to
 129                 * take drift into account. Either they're exclusive
 130                 * like IBSS and monitor, or we don't care much about
 131                 * their TSF (like P2P Device), but we won't be able
 132                 * to share the TSF resource.
 133                 */
 134                break;
 135        }
 136
 137        /*
 138         * Unless we exited above, we can't share the TSF resource
 139         * that the virtual interface we're iterating over is using
 140         * with the new one, so clear the available bit and if this
 141         * was the preferred one, reset that as well.
 142         */
 143        __clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
 144
 145        if (data->preferred_tsf == mvmvif->tsf_id)
 146                data->preferred_tsf = NUM_TSF_IDS;
 147}
 148
 149static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac,
 150                                       struct ieee80211_vif *vif)
 151{
 152        struct iwl_mvm_mac_iface_iterator_data *data = _data;
 153        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 154
 155        /* Iterator may already find the interface being added -- skip it */
 156        if (vif == data->vif) {
 157                data->found_vif = true;
 158                return;
 159        }
 160
 161        /* Mark MAC IDs as used by clearing the available bit, and
 162         * (below) mark TSFs as used if their existing use is not
 163         * compatible with the new interface type.
 164         * No locking or atomic bit operations are needed since the
 165         * data is on the stack of the caller function.
 166         */
 167        __clear_bit(mvmvif->id, data->available_mac_ids);
 168
 169        /* find a suitable tsf_id */
 170        iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
 171}
 172
 173void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm,
 174                                    struct ieee80211_vif *vif)
 175{
 176        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 177        struct iwl_mvm_mac_iface_iterator_data data = {
 178                .mvm = mvm,
 179                .vif = vif,
 180                .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
 181                /* no preference yet */
 182                .preferred_tsf = NUM_TSF_IDS,
 183        };
 184
 185        ieee80211_iterate_active_interfaces_atomic(
 186                mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 187                iwl_mvm_mac_tsf_id_iter, &data);
 188
 189        if (data.preferred_tsf != NUM_TSF_IDS)
 190                mvmvif->tsf_id = data.preferred_tsf;
 191        else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids))
 192                mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
 193                                                NUM_TSF_IDS);
 194}
 195
 196int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 197{
 198        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 199        struct iwl_mvm_mac_iface_iterator_data data = {
 200                .mvm = mvm,
 201                .vif = vif,
 202                .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 },
 203                .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 },
 204                /* no preference yet */
 205                .preferred_tsf = NUM_TSF_IDS,
 206                .found_vif = false,
 207        };
 208        int ret, i;
 209
 210        lockdep_assert_held(&mvm->mutex);
 211
 212        /*
 213         * Allocate a MAC ID and a TSF for this MAC, along with the queues
 214         * and other resources.
 215         */
 216
 217        /*
 218         * Before the iterator, we start with all MAC IDs and TSFs available.
 219         *
 220         * During iteration, all MAC IDs are cleared that are in use by other
 221         * virtual interfaces, and all TSF IDs are cleared that can't be used
 222         * by this new virtual interface because they're used by an interface
 223         * that can't share it with the new one.
 224         * At the same time, we check if there's a preferred TSF in the case
 225         * that we should share it with another interface.
 226         */
 227
 228        /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
 229        switch (vif->type) {
 230        case NL80211_IFTYPE_ADHOC:
 231                break;
 232        case NL80211_IFTYPE_STATION:
 233                if (!vif->p2p)
 234                        break;
 235                fallthrough;
 236        default:
 237                __clear_bit(0, data.available_mac_ids);
 238        }
 239
 240        ieee80211_iterate_active_interfaces_atomic(
 241                mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 242                iwl_mvm_mac_iface_iterator, &data);
 243
 244        /*
 245         * In the case we're getting here during resume, it's similar to
 246         * firmware restart, and with RESUME_ALL the iterator will find
 247         * the vif being added already.
 248         * We don't want to reassign any IDs in either case since doing
 249         * so would probably assign different IDs (as interfaces aren't
 250         * necessarily added in the same order), but the old IDs were
 251         * preserved anyway, so skip ID assignment for both resume and
 252         * recovery.
 253         */
 254        if (data.found_vif)
 255                return 0;
 256
 257        /* Therefore, in recovery, we can't get here */
 258        if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)))
 259                return -EBUSY;
 260
 261        mvmvif->id = find_first_bit(data.available_mac_ids,
 262                                    NUM_MAC_INDEX_DRIVER);
 263        if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
 264                IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
 265                ret = -EIO;
 266                goto exit_fail;
 267        }
 268
 269        if (data.preferred_tsf != NUM_TSF_IDS)
 270                mvmvif->tsf_id = data.preferred_tsf;
 271        else
 272                mvmvif->tsf_id = find_first_bit(data.available_tsf_ids,
 273                                                NUM_TSF_IDS);
 274        if (mvmvif->tsf_id == NUM_TSF_IDS) {
 275                IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
 276                ret = -EIO;
 277                goto exit_fail;
 278        }
 279
 280        mvmvif->color = 0;
 281
 282        INIT_LIST_HEAD(&mvmvif->time_event_data.list);
 283        mvmvif->time_event_data.id = TE_MAX;
 284
 285        /* No need to allocate data queues to P2P Device MAC and NAN.*/
 286        if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
 287                return 0;
 288
 289        /* Allocate the CAB queue for softAP and GO interfaces */
 290        if (vif->type == NL80211_IFTYPE_AP ||
 291            vif->type == NL80211_IFTYPE_ADHOC) {
 292                /*
 293                 * For TVQM this will be overwritten later with the FW assigned
 294                 * queue value (when queue is enabled).
 295                 */
 296                mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
 297        }
 298
 299        mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA;
 300        mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA;
 301        mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
 302
 303        for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++)
 304                mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
 305
 306        return 0;
 307
 308exit_fail:
 309        memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
 310        return ret;
 311}
 312
 313static void iwl_mvm_ack_rates(struct iwl_mvm *mvm,
 314                              struct ieee80211_vif *vif,
 315                              enum nl80211_band band,
 316                              u8 *cck_rates, u8 *ofdm_rates)
 317{
 318        struct ieee80211_supported_band *sband;
 319        unsigned long basic = vif->bss_conf.basic_rates;
 320        int lowest_present_ofdm = 100;
 321        int lowest_present_cck = 100;
 322        u8 cck = 0;
 323        u8 ofdm = 0;
 324        int i;
 325
 326        sband = mvm->hw->wiphy->bands[band];
 327
 328        for_each_set_bit(i, &basic, BITS_PER_LONG) {
 329                int hw = sband->bitrates[i].hw_value;
 330                if (hw >= IWL_FIRST_OFDM_RATE) {
 331                        ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
 332                        if (lowest_present_ofdm > hw)
 333                                lowest_present_ofdm = hw;
 334                } else {
 335                        BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
 336
 337                        cck |= BIT(hw);
 338                        if (lowest_present_cck > hw)
 339                                lowest_present_cck = hw;
 340                }
 341        }
 342
 343        /*
 344         * Now we've got the basic rates as bitmaps in the ofdm and cck
 345         * variables. This isn't sufficient though, as there might not
 346         * be all the right rates in the bitmap. E.g. if the only basic
 347         * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
 348         * and 6 Mbps because the 802.11-2007 standard says in 9.6:
 349         *
 350         *    [...] a STA responding to a received frame shall transmit
 351         *    its Control Response frame [...] at the highest rate in the
 352         *    BSSBasicRateSet parameter that is less than or equal to the
 353         *    rate of the immediately previous frame in the frame exchange
 354         *    sequence ([...]) and that is of the same modulation class
 355         *    ([...]) as the received frame. If no rate contained in the
 356         *    BSSBasicRateSet parameter meets these conditions, then the
 357         *    control frame sent in response to a received frame shall be
 358         *    transmitted at the highest mandatory rate of the PHY that is
 359         *    less than or equal to the rate of the received frame, and
 360         *    that is of the same modulation class as the received frame.
 361         *
 362         * As a consequence, we need to add all mandatory rates that are
 363         * lower than all of the basic rates to these bitmaps.
 364         */
 365
 366        if (IWL_RATE_24M_INDEX < lowest_present_ofdm)
 367                ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
 368        if (IWL_RATE_12M_INDEX < lowest_present_ofdm)
 369                ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
 370        /* 6M already there or needed so always add */
 371        ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
 372
 373        /*
 374         * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
 375         * Note, however:
 376         *  - if no CCK rates are basic, it must be ERP since there must
 377         *    be some basic rates at all, so they're OFDM => ERP PHY
 378         *    (or we're in 5 GHz, and the cck bitmap will never be used)
 379         *  - if 11M is a basic rate, it must be ERP as well, so add 5.5M
 380         *  - if 5.5M is basic, 1M and 2M are mandatory
 381         *  - if 2M is basic, 1M is mandatory
 382         *  - if 1M is basic, that's the only valid ACK rate.
 383         * As a consequence, it's not as complicated as it sounds, just add
 384         * any lower rates to the ACK rate bitmap.
 385         */
 386        if (IWL_RATE_11M_INDEX < lowest_present_cck)
 387                cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
 388        if (IWL_RATE_5M_INDEX < lowest_present_cck)
 389                cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
 390        if (IWL_RATE_2M_INDEX < lowest_present_cck)
 391                cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
 392        /* 1M already there or needed so always add */
 393        cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
 394
 395        *cck_rates = cck;
 396        *ofdm_rates = ofdm;
 397}
 398
 399static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm,
 400                                         struct ieee80211_vif *vif,
 401                                         struct iwl_mac_ctx_cmd *cmd)
 402{
 403        /* for both sta and ap, ht_operation_mode hold the protection_mode */
 404        u8 protection_mode = vif->bss_conf.ht_operation_mode &
 405                                 IEEE80211_HT_OP_MODE_PROTECTION;
 406        /* The fw does not distinguish between ht and fat */
 407        u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
 408
 409        IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
 410        /*
 411         * See section 9.23.3.1 of IEEE 80211-2012.
 412         * Nongreenfield HT STAs Present is not supported.
 413         */
 414        switch (protection_mode) {
 415        case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
 416                break;
 417        case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
 418        case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
 419                cmd->protection_flags |= cpu_to_le32(ht_flag);
 420                break;
 421        case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
 422                /* Protect when channel wider than 20MHz */
 423                if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
 424                        cmd->protection_flags |= cpu_to_le32(ht_flag);
 425                break;
 426        default:
 427                IWL_ERR(mvm, "Illegal protection mode %d\n",
 428                        protection_mode);
 429                break;
 430        }
 431}
 432
 433static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm,
 434                                        struct ieee80211_vif *vif,
 435                                        struct iwl_mac_ctx_cmd *cmd,
 436                                        const u8 *bssid_override,
 437                                        u32 action)
 438{
 439        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 440        struct ieee80211_chanctx_conf *chanctx;
 441        bool ht_enabled = !!(vif->bss_conf.ht_operation_mode &
 442                             IEEE80211_HT_OP_MODE_PROTECTION);
 443        u8 cck_ack_rates, ofdm_ack_rates;
 444        const u8 *bssid = bssid_override ?: vif->bss_conf.bssid;
 445        int i;
 446
 447        cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
 448                                                            mvmvif->color));
 449        cmd->action = cpu_to_le32(action);
 450
 451        switch (vif->type) {
 452        case NL80211_IFTYPE_STATION:
 453                if (vif->p2p)
 454                        cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA);
 455                else
 456                        cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
 457                break;
 458        case NL80211_IFTYPE_AP:
 459                cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
 460                break;
 461        case NL80211_IFTYPE_MONITOR:
 462                cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
 463                break;
 464        case NL80211_IFTYPE_P2P_DEVICE:
 465                cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
 466                break;
 467        case NL80211_IFTYPE_ADHOC:
 468                cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
 469                break;
 470        default:
 471                WARN_ON_ONCE(1);
 472        }
 473
 474        cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
 475
 476        memcpy(cmd->node_addr, vif->addr, ETH_ALEN);
 477
 478        if (bssid)
 479                memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
 480        else
 481                eth_broadcast_addr(cmd->bssid_addr);
 482
 483        rcu_read_lock();
 484        chanctx = rcu_dereference(vif->chanctx_conf);
 485        iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band
 486                                            : NL80211_BAND_2GHZ,
 487                          &cck_ack_rates, &ofdm_ack_rates);
 488        rcu_read_unlock();
 489
 490        cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates);
 491        cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates);
 492
 493        cmd->cck_short_preamble =
 494                cpu_to_le32(vif->bss_conf.use_short_preamble ?
 495                            MAC_FLG_SHORT_PREAMBLE : 0);
 496        cmd->short_slot =
 497                cpu_to_le32(vif->bss_conf.use_short_slot ?
 498                            MAC_FLG_SHORT_SLOT : 0);
 499
 500        cmd->filter_flags = 0;
 501
 502        for (i = 0; i < IEEE80211_NUM_ACS; i++) {
 503                u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
 504                u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
 505
 506                cmd->ac[ucode_ac].cw_min =
 507                        cpu_to_le16(mvmvif->queue_params[i].cw_min);
 508                cmd->ac[ucode_ac].cw_max =
 509                        cpu_to_le16(mvmvif->queue_params[i].cw_max);
 510                cmd->ac[ucode_ac].edca_txop =
 511                        cpu_to_le16(mvmvif->queue_params[i].txop * 32);
 512                cmd->ac[ucode_ac].aifsn = mvmvif->queue_params[i].aifs;
 513                cmd->ac[ucode_ac].fifos_mask = BIT(txf);
 514        }
 515
 516        if (vif->bss_conf.qos)
 517                cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
 518
 519        if (vif->bss_conf.use_cts_prot)
 520                cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
 521
 522        IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n",
 523                       vif->bss_conf.use_cts_prot,
 524                       vif->bss_conf.ht_operation_mode);
 525        if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
 526                cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
 527        if (ht_enabled)
 528                iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd);
 529}
 530
 531static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm,
 532                                     struct iwl_mac_ctx_cmd *cmd)
 533{
 534        int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
 535                                       sizeof(*cmd), cmd);
 536        if (ret)
 537                IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n",
 538                        le32_to_cpu(cmd->action), ret);
 539        return ret;
 540}
 541
 542static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm,
 543                                    struct ieee80211_vif *vif,
 544                                    u32 action, bool force_assoc_off,
 545                                    const u8 *bssid_override)
 546{
 547        struct iwl_mac_ctx_cmd cmd = {};
 548        struct iwl_mac_data_sta *ctxt_sta;
 549
 550        WARN_ON(vif->type != NL80211_IFTYPE_STATION);
 551
 552        /* Fill the common data for all mac context types */
 553        iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action);
 554
 555        /*
 556         * We always want to hear MCAST frames, if we're not authorized yet,
 557         * we'll drop them.
 558         */
 559        cmd.filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
 560
 561        if (vif->p2p) {
 562                struct ieee80211_p2p_noa_attr *noa =
 563                        &vif->bss_conf.p2p_noa_attr;
 564
 565                cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow &
 566                                        IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
 567                ctxt_sta = &cmd.p2p_sta.sta;
 568        } else {
 569                ctxt_sta = &cmd.sta;
 570        }
 571
 572        /* We need the dtim_period to set the MAC as associated */
 573        if (vif->bss_conf.assoc && vif->bss_conf.dtim_period &&
 574            !force_assoc_off) {
 575                struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 576                u32 dtim_offs;
 577
 578                /*
 579                 * The DTIM count counts down, so when it is N that means N
 580                 * more beacon intervals happen until the DTIM TBTT. Therefore
 581                 * add this to the current time. If that ends up being in the
 582                 * future, the firmware will handle it.
 583                 *
 584                 * Also note that the system_timestamp (which we get here as
 585                 * "sync_device_ts") and TSF timestamp aren't at exactly the
 586                 * same offset in the frame -- the TSF is at the first symbol
 587                 * of the TSF, the system timestamp is at signal acquisition
 588                 * time. This means there's an offset between them of at most
 589                 * a few hundred microseconds (24 * 8 bits + PLCP time gives
 590                 * 384us in the longest case), this is currently not relevant
 591                 * as the firmware wakes up around 2ms before the TBTT.
 592                 */
 593                dtim_offs = vif->bss_conf.sync_dtim_count *
 594                                vif->bss_conf.beacon_int;
 595                /* convert TU to usecs */
 596                dtim_offs *= 1024;
 597
 598                ctxt_sta->dtim_tsf =
 599                        cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
 600                ctxt_sta->dtim_time =
 601                        cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
 602                ctxt_sta->assoc_beacon_arrive_time =
 603                        cpu_to_le32(vif->bss_conf.sync_device_ts);
 604
 605                IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n",
 606                               le64_to_cpu(ctxt_sta->dtim_tsf),
 607                               le32_to_cpu(ctxt_sta->dtim_time),
 608                               dtim_offs);
 609
 610                ctxt_sta->is_assoc = cpu_to_le32(1);
 611
 612                if (!mvmvif->authorized &&
 613                    fw_has_capa(&mvm->fw->ucode_capa,
 614                                IWL_UCODE_TLV_CAPA_COEX_HIGH_PRIO))
 615                        ctxt_sta->data_policy |=
 616                                cpu_to_le32(COEX_HIGH_PRIORITY_ENABLE);
 617        } else {
 618                ctxt_sta->is_assoc = cpu_to_le32(0);
 619
 620                /* Allow beacons to pass through as long as we are not
 621                 * associated, or we do not have dtim period information.
 622                 */
 623                cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
 624        }
 625
 626        ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
 627        ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
 628                                              vif->bss_conf.dtim_period);
 629
 630        ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
 631        ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
 632
 633        if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p)
 634                cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
 635
 636        if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
 637                cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
 638                if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT)
 639                        ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED);
 640                if (vif->bss_conf.twt_protected)
 641                        ctxt_sta->data_policy |=
 642                                cpu_to_le32(PROTECTED_TWT_SUPPORTED);
 643                if (vif->bss_conf.twt_broadcast)
 644                        ctxt_sta->data_policy |=
 645                                cpu_to_le32(BROADCAST_TWT_SUPPORTED);
 646        }
 647
 648
 649        return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 650}
 651
 652static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm,
 653                                         struct ieee80211_vif *vif,
 654                                         u32 action)
 655{
 656        struct iwl_mac_ctx_cmd cmd = {};
 657        u32 tfd_queue_msk = BIT(mvm->snif_queue);
 658        int ret;
 659
 660        WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
 661
 662        iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
 663
 664        cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC |
 665                                       MAC_FILTER_IN_CONTROL_AND_MGMT |
 666                                       MAC_FILTER_IN_BEACON |
 667                                       MAC_FILTER_IN_PROBE_REQUEST |
 668                                       MAC_FILTER_IN_CRC32 |
 669                                       MAC_FILTER_ACCEPT_GRP);
 670        ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
 671
 672        /* Allocate sniffer station */
 673        ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk,
 674                                       vif->type, IWL_STA_GENERAL_PURPOSE);
 675        if (ret)
 676                return ret;
 677
 678        return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 679}
 680
 681static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm,
 682                                     struct ieee80211_vif *vif,
 683                                     u32 action)
 684{
 685        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 686        struct iwl_mac_ctx_cmd cmd = {};
 687
 688        WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
 689
 690        iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
 691
 692        cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON |
 693                                       MAC_FILTER_IN_PROBE_REQUEST |
 694                                       MAC_FILTER_ACCEPT_GRP);
 695
 696        /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
 697        cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
 698
 699        /* TODO: Assumes that the beacon id == mac context id */
 700        cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
 701
 702        return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
 703}
 704
 705struct iwl_mvm_go_iterator_data {
 706        bool go_active;
 707};
 708
 709static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
 710{
 711        struct iwl_mvm_go_iterator_data *data = _data;
 712        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 713
 714        if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
 715            mvmvif->ap_ibss_active)
 716                data->go_active = true;
 717}
 718
 719static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm,
 720                                           struct ieee80211_vif *vif,
 721                                           u32 action)
 722{
 723        struct iwl_mac_ctx_cmd cmd = {};
 724        struct iwl_mvm_go_iterator_data data = {};
 725
 726        WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
 727
 728        iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
 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
 749void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm,
 750                              __le32 *tim_index, __le32 *tim_size,
 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                *tim_index = cpu_to_le32(tim_idx);
 768                *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
 774static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size)
 775{
 776        struct ieee80211_mgmt *mgmt = (void *)beacon;
 777        const u8 *ie;
 778
 779        if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon)))
 780                return 0;
 781
 782        frame_size -= mgmt->u.beacon.variable - beacon;
 783
 784        ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
 785        if (!ie)
 786                return 0;
 787
 788        return ie - beacon;
 789}
 790
 791u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info,
 792                                    struct ieee80211_vif *vif)
 793{
 794        u8 rate;
 795        if (info->band == NL80211_BAND_2GHZ && !vif->p2p)
 796                rate = IWL_FIRST_CCK_RATE;
 797        else
 798                rate = IWL_FIRST_OFDM_RATE;
 799
 800        return rate;
 801}
 802
 803u16 iwl_mvm_mac_ctxt_get_beacon_flags(const struct iwl_fw *fw, u8 rate_idx)
 804{
 805        u16 flags = iwl_mvm_mac80211_idx_to_hwrate(fw, rate_idx);
 806        bool is_new_rate = iwl_fw_lookup_cmd_ver(fw, BEACON_TEMPLATE_CMD, 0) > 10;
 807
 808        if (rate_idx <= IWL_FIRST_CCK_RATE)
 809                flags |= is_new_rate ? IWL_MAC_BEACON_CCK
 810                          : IWL_MAC_BEACON_CCK_V1;
 811
 812        return flags;
 813}
 814
 815static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm,
 816                                    struct ieee80211_vif *vif,
 817                                    struct sk_buff *beacon,
 818                                    struct iwl_tx_cmd *tx)
 819{
 820        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 821        struct ieee80211_tx_info *info;
 822        u8 rate;
 823        u32 tx_flags;
 824
 825        info = IEEE80211_SKB_CB(beacon);
 826
 827        /* Set up TX command fields */
 828        tx->len = cpu_to_le16((u16)beacon->len);
 829        tx->sta_id = mvmvif->bcast_sta.sta_id;
 830        tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
 831        tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
 832        tx_flags |=
 833                iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) <<
 834                                                TX_CMD_FLG_BT_PRIO_POS;
 835        tx->tx_flags = cpu_to_le32(tx_flags);
 836
 837        if (!fw_has_capa(&mvm->fw->ucode_capa,
 838                         IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION))
 839                iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
 840
 841        tx->rate_n_flags =
 842                cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) <<
 843                            RATE_MCS_ANT_POS);
 844
 845        rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
 846
 847        tx->rate_n_flags |=
 848                cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate));
 849        if (rate == IWL_FIRST_CCK_RATE)
 850                tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK_V1);
 851
 852}
 853
 854int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm,
 855                                     struct sk_buff *beacon,
 856                                     void *data, int len)
 857{
 858        struct iwl_host_cmd cmd = {
 859                .id = BEACON_TEMPLATE_CMD,
 860                .flags = CMD_ASYNC,
 861        };
 862
 863        cmd.len[0] = len;
 864        cmd.data[0] = data;
 865        cmd.dataflags[0] = 0;
 866        cmd.len[1] = beacon->len;
 867        cmd.data[1] = beacon->data;
 868        cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
 869
 870        return iwl_mvm_send_cmd(mvm, &cmd);
 871}
 872
 873static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm,
 874                                           struct ieee80211_vif *vif,
 875                                           struct sk_buff *beacon)
 876{
 877        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 878        struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
 879
 880        iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
 881
 882        beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
 883
 884        if (vif->type == NL80211_IFTYPE_AP)
 885                iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
 886                                         &beacon_cmd.tim_size,
 887                                         beacon->data, beacon->len);
 888
 889        return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
 890                                                sizeof(beacon_cmd));
 891}
 892
 893static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm,
 894                                           struct ieee80211_vif *vif,
 895                                           struct sk_buff *beacon)
 896{
 897        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 898        struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
 899
 900        iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
 901
 902        beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
 903
 904        if (vif->type == NL80211_IFTYPE_AP)
 905                iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
 906                                         &beacon_cmd.tim_size,
 907                                         beacon->data, beacon->len);
 908
 909        beacon_cmd.csa_offset =
 910                cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
 911                                                   WLAN_EID_CHANNEL_SWITCH,
 912                                                   beacon->len));
 913        beacon_cmd.ecsa_offset =
 914                cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
 915                                                   WLAN_EID_EXT_CHANSWITCH_ANN,
 916                                                   beacon->len));
 917
 918        return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
 919                                                sizeof(beacon_cmd));
 920}
 921
 922static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm,
 923                                           struct ieee80211_vif *vif,
 924                                           struct sk_buff *beacon)
 925{
 926        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 927        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon);
 928        struct iwl_mac_beacon_cmd beacon_cmd = {};
 929        u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
 930        u16 flags;
 931        struct ieee80211_chanctx_conf *ctx;
 932        int channel;
 933        flags = iwl_mvm_mac_ctxt_get_beacon_flags(mvm->fw, rate);
 934
 935        /* Enable FILS on PSC channels only */
 936        rcu_read_lock();
 937        ctx = rcu_dereference(vif->chanctx_conf);
 938        channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq);
 939        WARN_ON(channel == 0);
 940        if (cfg80211_channel_is_psc(ctx->def.chan) &&
 941            !IWL_MVM_DISABLE_AP_FILS) {
 942                flags |= iwl_fw_lookup_cmd_ver(mvm->fw, BEACON_TEMPLATE_CMD,
 943                                               0) > 10 ?
 944                        IWL_MAC_BEACON_FILS :
 945                        IWL_MAC_BEACON_FILS_V1;
 946                beacon_cmd.short_ssid =
 947                        cpu_to_le32(~crc32_le(~0, vif->bss_conf.ssid,
 948                                              vif->bss_conf.ssid_len));
 949        }
 950        rcu_read_unlock();
 951
 952        beacon_cmd.flags = cpu_to_le16(flags);
 953        beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len);
 954        beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id);
 955
 956        if (vif->type == NL80211_IFTYPE_AP)
 957                iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx,
 958                                         &beacon_cmd.tim_size,
 959                                         beacon->data, beacon->len);
 960
 961        beacon_cmd.csa_offset =
 962                cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
 963                                                   WLAN_EID_CHANNEL_SWITCH,
 964                                                   beacon->len));
 965        beacon_cmd.ecsa_offset =
 966                cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data,
 967                                                   WLAN_EID_EXT_CHANSWITCH_ANN,
 968                                                   beacon->len));
 969
 970        return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd,
 971                                                sizeof(beacon_cmd));
 972}
 973
 974int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm,
 975                                 struct ieee80211_vif *vif,
 976                                 struct sk_buff *beacon)
 977{
 978        if (WARN_ON(!beacon))
 979                return -EINVAL;
 980
 981        if (IWL_MVM_NON_TRANSMITTING_AP)
 982                return 0;
 983
 984        if (!fw_has_capa(&mvm->fw->ucode_capa,
 985                         IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD))
 986                return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
 987
 988        if (fw_has_api(&mvm->fw->ucode_capa,
 989                       IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE))
 990                return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon);
 991
 992        return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
 993}
 994
 995/* The beacon template for the AP/GO/IBSS has changed and needs update */
 996int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm,
 997                                    struct ieee80211_vif *vif)
 998{
 999        struct sk_buff *beacon;
1000        int ret;
1001
1002        WARN_ON(vif->type != NL80211_IFTYPE_AP &&
1003                vif->type != NL80211_IFTYPE_ADHOC);
1004
1005        beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
1006        if (!beacon)
1007                return -ENOMEM;
1008
1009#ifdef CONFIG_IWLWIFI_DEBUGFS
1010        if (mvm->beacon_inject_active) {
1011                dev_kfree_skb(beacon);
1012                return -EBUSY;
1013        }
1014#endif
1015
1016        ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
1017        dev_kfree_skb(beacon);
1018        return ret;
1019}
1020
1021struct iwl_mvm_mac_ap_iterator_data {
1022        struct iwl_mvm *mvm;
1023        struct ieee80211_vif *vif;
1024        u32 beacon_device_ts;
1025        u16 beacon_int;
1026};
1027
1028/* Find the beacon_device_ts and beacon_int for a managed interface */
1029static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac,
1030                                    struct ieee80211_vif *vif)
1031{
1032        struct iwl_mvm_mac_ap_iterator_data *data = _data;
1033
1034        if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1035                return;
1036
1037        /* Station client has higher priority over P2P client*/
1038        if (vif->p2p && data->beacon_device_ts)
1039                return;
1040
1041        data->beacon_device_ts = vif->bss_conf.sync_device_ts;
1042        data->beacon_int = vif->bss_conf.beacon_int;
1043}
1044
1045/*
1046 * Fill the specific data for mac context of type AP of P2P GO
1047 */
1048static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
1049                                         struct ieee80211_vif *vif,
1050                                         struct iwl_mac_ctx_cmd *cmd,
1051                                         struct iwl_mac_data_ap *ctxt_ap,
1052                                         bool add)
1053{
1054        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1055        struct iwl_mvm_mac_ap_iterator_data data = {
1056                .mvm = mvm,
1057                .vif = vif,
1058                .beacon_device_ts = 0
1059        };
1060
1061        /* in AP mode, the MCAST FIFO takes the EDCA params from VO */
1062        cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
1063
1064        /*
1065         * in AP mode, pass probe requests and beacons from other APs
1066         * (needed for ht protection); when there're no any associated
1067         * station don't ask FW to pass beacons to prevent unnecessary
1068         * wake-ups.
1069         */
1070        cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
1071        if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
1072                cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
1073                IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
1074        } else {
1075                IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
1076        }
1077
1078        ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
1079        ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int *
1080                                             vif->bss_conf.dtim_period);
1081
1082        if (!fw_has_api(&mvm->fw->ucode_capa,
1083                        IWL_UCODE_TLV_API_STA_TYPE))
1084                ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue);
1085
1086        /*
1087         * Only set the beacon time when the MAC is being added, when we
1088         * just modify the MAC then we should keep the time -- the firmware
1089         * can otherwise have a "jumping" TBTT.
1090         */
1091        if (add) {
1092                /*
1093                 * If there is a station/P2P client interface which is
1094                 * associated, set the AP's TBTT far enough from the station's
1095                 * TBTT. Otherwise, set it to the current system time
1096                 */
1097                ieee80211_iterate_active_interfaces_atomic(
1098                        mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1099                        iwl_mvm_mac_ap_iterator, &data);
1100
1101                if (data.beacon_device_ts) {
1102                        u32 rand = (prandom_u32() % (64 - 36)) + 36;
1103                        mvmvif->ap_beacon_time = data.beacon_device_ts +
1104                                ieee80211_tu_to_usec(data.beacon_int * rand /
1105                                                     100);
1106                } else {
1107                        mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm);
1108                }
1109        }
1110
1111        ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
1112        ctxt_ap->beacon_tsf = 0; /* unused */
1113
1114        /* TODO: Assume that the beacon id == mac context id */
1115        ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
1116}
1117
1118static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm,
1119                                   struct ieee80211_vif *vif,
1120                                   u32 action)
1121{
1122        struct iwl_mac_ctx_cmd cmd = {};
1123
1124        WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
1125
1126        /* Fill the common data for all mac context types */
1127        iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1128
1129        /* Fill the data specific for ap mode */
1130        iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap,
1131                                     action == FW_CTXT_ACTION_ADD);
1132
1133        return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1134}
1135
1136static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm,
1137                                   struct ieee80211_vif *vif,
1138                                   u32 action)
1139{
1140        struct iwl_mac_ctx_cmd cmd = {};
1141        struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr;
1142
1143        WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
1144
1145        /* Fill the common data for all mac context types */
1146        iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
1147
1148        /* Fill the data specific for GO mode */
1149        iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap,
1150                                     action == FW_CTXT_ACTION_ADD);
1151
1152        cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow &
1153                                        IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
1154        cmd.go.opp_ps_enabled =
1155                        cpu_to_le32(!!(noa->oppps_ctwindow &
1156                                        IEEE80211_P2P_OPPPS_ENABLE_BIT));
1157
1158        return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
1159}
1160
1161static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1162                                u32 action, bool force_assoc_off,
1163                                const u8 *bssid_override)
1164{
1165        switch (vif->type) {
1166        case NL80211_IFTYPE_STATION:
1167                return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action,
1168                                                force_assoc_off,
1169                                                bssid_override);
1170        case NL80211_IFTYPE_AP:
1171                if (!vif->p2p)
1172                        return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
1173                else
1174                        return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
1175        case NL80211_IFTYPE_MONITOR:
1176                return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
1177        case NL80211_IFTYPE_P2P_DEVICE:
1178                return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
1179        case NL80211_IFTYPE_ADHOC:
1180                return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
1181        default:
1182                break;
1183        }
1184
1185        return -EOPNOTSUPP;
1186}
1187
1188int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1189{
1190        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1191        int ret;
1192
1193        if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n",
1194                      vif->addr, ieee80211_vif_type_p2p(vif)))
1195                return -EIO;
1196
1197        ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD,
1198                                   true, NULL);
1199        if (ret)
1200                return ret;
1201
1202        /* will only do anything at resume from D3 time */
1203        iwl_mvm_set_last_nonqos_seq(mvm, vif);
1204
1205        mvmvif->uploaded = true;
1206        return 0;
1207}
1208
1209int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1210                             bool force_assoc_off, const u8 *bssid_override)
1211{
1212        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1213
1214        if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n",
1215                      vif->addr, ieee80211_vif_type_p2p(vif)))
1216                return -EIO;
1217
1218        return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY,
1219                                    force_assoc_off, bssid_override);
1220}
1221
1222int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1223{
1224        struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1225        struct iwl_mac_ctx_cmd cmd;
1226        int ret;
1227
1228        if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n",
1229                      vif->addr, ieee80211_vif_type_p2p(vif)))
1230                return -EIO;
1231
1232        memset(&cmd, 0, sizeof(cmd));
1233
1234        cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1235                                                           mvmvif->color));
1236        cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
1237
1238        ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0,
1239                                   sizeof(cmd), &cmd);
1240        if (ret) {
1241                IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
1242                return ret;
1243        }
1244
1245        mvmvif->uploaded = false;
1246
1247        if (vif->type == NL80211_IFTYPE_MONITOR) {
1248                __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
1249                iwl_mvm_dealloc_snif_sta(mvm);
1250        }
1251
1252        return 0;
1253}
1254
1255static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm,
1256                                   struct ieee80211_vif *csa_vif, u32 gp2,
1257                                   bool tx_success)
1258{
1259        struct iwl_mvm_vif *mvmvif =
1260                        iwl_mvm_vif_from_mac80211(csa_vif);
1261
1262        /* Don't start to countdown from a failed beacon */
1263        if (!tx_success && !mvmvif->csa_countdown)
1264                return;
1265
1266        mvmvif->csa_countdown = true;
1267
1268        if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) {
1269                int c = ieee80211_beacon_update_cntdwn(csa_vif);
1270
1271                iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
1272                if (csa_vif->p2p &&
1273                    !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 &&
1274                    tx_success) {
1275                        u32 rel_time = (c + 1) *
1276                                       csa_vif->bss_conf.beacon_int -
1277                                       IWL_MVM_CHANNEL_SWITCH_TIME_GO;
1278                        u32 apply_time = gp2 + rel_time * 1024;
1279
1280                        iwl_mvm_schedule_csa_period(mvm, csa_vif,
1281                                         IWL_MVM_CHANNEL_SWITCH_TIME_GO -
1282                                         IWL_MVM_CHANNEL_SWITCH_MARGIN,
1283                                         apply_time);
1284                }
1285        } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
1286                /* we don't have CSA NoA scheduled yet, switch now */
1287                ieee80211_csa_finish(csa_vif);
1288                RCU_INIT_POINTER(mvm->csa_vif, NULL);
1289        }
1290}
1291
1292void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm,
1293                             struct iwl_rx_cmd_buffer *rxb)
1294{
1295        struct iwl_rx_packet *pkt = rxb_addr(rxb);
1296        unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1297        struct iwl_extended_beacon_notif *beacon = (void *)pkt->data;
1298        struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data;
1299        struct ieee80211_vif *csa_vif;
1300        struct ieee80211_vif *tx_blocked_vif;
1301        struct agg_tx_status *agg_status;
1302        u16 status;
1303
1304        lockdep_assert_held(&mvm->mutex);
1305
1306        mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
1307
1308        if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) {
1309                struct iwl_mvm_tx_resp *beacon_notify_hdr =
1310                        &beacon_v5->beacon_notify_hdr;
1311
1312                if (unlikely(pkt_len < sizeof(*beacon_v5)))
1313                        return;
1314
1315                mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0;
1316                agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
1317                status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
1318                IWL_DEBUG_RX(mvm,
1319                             "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n",
1320                             status, beacon_notify_hdr->failure_frame,
1321                             le64_to_cpu(beacon->tsf),
1322                             mvm->ap_last_beacon_gp2,
1323                             le32_to_cpu(beacon_notify_hdr->initial_rate));
1324        } else {
1325                if (unlikely(pkt_len < sizeof(*beacon)))
1326                        return;
1327
1328                mvm->ibss_manager = beacon->ibss_mgr_status != 0;
1329                status = le32_to_cpu(beacon->status) & TX_STATUS_MSK;
1330                IWL_DEBUG_RX(mvm,
1331                             "beacon status %#x tsf:0x%016llX gp2:0x%X\n",
1332                             status, le64_to_cpu(beacon->tsf),
1333                             mvm->ap_last_beacon_gp2);
1334        }
1335
1336        csa_vif = rcu_dereference_protected(mvm->csa_vif,
1337                                            lockdep_is_held(&mvm->mutex));
1338        if (unlikely(csa_vif && csa_vif->csa_active))
1339                iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2,
1340                                       (status == TX_STATUS_SUCCESS));
1341
1342        tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif,
1343                                                lockdep_is_held(&mvm->mutex));
1344        if (unlikely(tx_blocked_vif)) {
1345                struct iwl_mvm_vif *mvmvif =
1346                        iwl_mvm_vif_from_mac80211(tx_blocked_vif);
1347
1348                /*
1349                 * The channel switch is started and we have blocked the
1350                 * stations. If this is the first beacon (the timeout wasn't
1351                 * set), set the unblock timeout, otherwise countdown
1352                 */
1353                if (!mvm->csa_tx_block_bcn_timeout)
1354                        mvm->csa_tx_block_bcn_timeout =
1355                                IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
1356                else
1357                        mvm->csa_tx_block_bcn_timeout--;
1358
1359                /* Check if the timeout is expired, and unblock tx */
1360                if (mvm->csa_tx_block_bcn_timeout == 0) {
1361                        iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
1362                        RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1363                }
1364        }
1365}
1366
1367void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm,
1368                                     struct iwl_rx_cmd_buffer *rxb)
1369{
1370        struct iwl_rx_packet *pkt = rxb_addr(rxb);
1371        struct iwl_missed_beacons_notif *mb = (void *)pkt->data;
1372        struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig;
1373        struct iwl_fw_dbg_trigger_tlv *trigger;
1374        u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
1375        u32 rx_missed_bcon, rx_missed_bcon_since_rx;
1376        struct ieee80211_vif *vif;
1377        u32 id = le32_to_cpu(mb->mac_id);
1378        union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt };
1379
1380        IWL_DEBUG_INFO(mvm,
1381                       "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
1382                       le32_to_cpu(mb->mac_id),
1383                       le32_to_cpu(mb->consec_missed_beacons),
1384                       le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
1385                       le32_to_cpu(mb->num_recvd_beacons),
1386                       le32_to_cpu(mb->num_expected_beacons));
1387
1388        rcu_read_lock();
1389
1390        vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1391        if (!vif)
1392                goto out;
1393
1394        rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons);
1395        rx_missed_bcon_since_rx =
1396                le32_to_cpu(mb->consec_missed_beacons_since_last_rx);
1397        /*
1398         * TODO: the threshold should be adjusted based on latency conditions,
1399         * and/or in case of a CS flow on one of the other AP vifs.
1400         */
1401        if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG)
1402                iwl_mvm_connection_loss(mvm, vif, "missed beacons");
1403        else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD)
1404                ieee80211_beacon_loss(vif);
1405
1406        iwl_dbg_tlv_time_point(&mvm->fwrt,
1407                               IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data);
1408
1409        trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1410                                        FW_DBG_TRIGGER_MISSED_BEACONS);
1411        if (!trigger)
1412                goto out;
1413
1414        bcon_trig = (void *)trigger->data;
1415        stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
1416        stop_trig_missed_bcon_since_rx =
1417                le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
1418
1419        /* TODO: implement start trigger */
1420
1421        if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
1422            rx_missed_bcon >= stop_trig_missed_bcon)
1423                iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
1424
1425out:
1426        rcu_read_unlock();
1427}
1428
1429void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm,
1430                                    struct iwl_rx_cmd_buffer *rxb)
1431{
1432        struct iwl_rx_packet *pkt = rxb_addr(rxb);
1433        unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
1434        struct iwl_stored_beacon_notif_common *sb = (void *)pkt->data;
1435        struct ieee80211_rx_status rx_status;
1436        struct sk_buff *skb;
1437        u8 *data;
1438        u32 size = le32_to_cpu(sb->byte_count);
1439        int ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1440                                        WIDE_ID(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF),
1441                                        0);
1442
1443        if (size == 0)
1444                return;
1445
1446        /* handle per-version differences */
1447        if (ver <= 2) {
1448                struct iwl_stored_beacon_notif_v2 *sb_v2 = (void *)pkt->data;
1449
1450                if (pkt_len < struct_size(sb_v2, data, size))
1451                        return;
1452
1453                data = sb_v2->data;
1454        } else {
1455                struct iwl_stored_beacon_notif_v3 *sb_v3 = (void *)pkt->data;
1456
1457                if (pkt_len < struct_size(sb_v3, data, size))
1458                        return;
1459
1460                data = sb_v3->data;
1461        }
1462
1463        skb = alloc_skb(size, GFP_ATOMIC);
1464        if (!skb) {
1465                IWL_ERR(mvm, "alloc_skb failed\n");
1466                return;
1467        }
1468
1469        /* update rx_status according to the notification's metadata */
1470        memset(&rx_status, 0, sizeof(rx_status));
1471        rx_status.mactime = le64_to_cpu(sb->tsf);
1472        /* TSF as indicated by the firmware  is at INA time */
1473        rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
1474        rx_status.device_timestamp = le32_to_cpu(sb->system_time);
1475        rx_status.band =
1476                (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
1477                                NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
1478        rx_status.freq =
1479                ieee80211_channel_to_frequency(le16_to_cpu(sb->channel),
1480                                               rx_status.band);
1481
1482        /* copy the data */
1483        skb_put_data(skb, data, size);
1484        memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1485
1486        /* pass it as regular rx to mac80211 */
1487        ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
1488}
1489
1490void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm,
1491                                   struct iwl_rx_cmd_buffer *rxb)
1492{
1493        struct iwl_rx_packet *pkt = rxb_addr(rxb);
1494        struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
1495        struct iwl_probe_resp_data *old_data, *new_data;
1496        u32 id = le32_to_cpu(notif->mac_id);
1497        struct ieee80211_vif *vif;
1498        struct iwl_mvm_vif *mvmvif;
1499
1500        IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n",
1501                       notif->noa_active, notif->csa_counter);
1502
1503        vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false);
1504        if (!vif)
1505                return;
1506
1507        mvmvif = iwl_mvm_vif_from_mac80211(vif);
1508
1509        new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
1510        if (!new_data)
1511                return;
1512
1513        memcpy(&new_data->notif, notif, sizeof(new_data->notif));
1514
1515        /* noa_attr contains 1 reserved byte, need to substruct it */
1516        new_data->noa_len = sizeof(struct ieee80211_vendor_ie) +
1517                            sizeof(new_data->notif.noa_attr) - 1;
1518
1519        /*
1520         * If it's a one time NoA, only one descriptor is needed,
1521         * adjust the length according to len_low.
1522         */
1523        if (new_data->notif.noa_attr.len_low ==
1524            sizeof(struct ieee80211_p2p_noa_desc) + 2)
1525                new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
1526
1527        old_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1528                                        lockdep_is_held(&mvmvif->mvm->mutex));
1529        rcu_assign_pointer(mvmvif->probe_resp_data, new_data);
1530
1531        if (old_data)
1532                kfree_rcu(old_data, rcu_head);
1533
1534        if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
1535            notif->csa_counter >= 1)
1536                ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
1537}
1538
1539void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm,
1540                                        struct iwl_rx_cmd_buffer *rxb)
1541{
1542        struct iwl_rx_packet *pkt = rxb_addr(rxb);
1543        struct iwl_channel_switch_start_notif *notif = (void *)pkt->data;
1544        struct ieee80211_vif *csa_vif, *vif;
1545        struct iwl_mvm_vif *mvmvif;
1546        u32 id_n_color, csa_id, mac_id;
1547
1548        id_n_color = le32_to_cpu(notif->id_and_color);
1549        mac_id = id_n_color & FW_CTXT_ID_MSK;
1550
1551        if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER))
1552                return;
1553
1554        rcu_read_lock();
1555        vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]);
1556        mvmvif = iwl_mvm_vif_from_mac80211(vif);
1557
1558        switch (vif->type) {
1559        case NL80211_IFTYPE_AP:
1560                csa_vif = rcu_dereference(mvm->csa_vif);
1561                if (WARN_ON(!csa_vif || !csa_vif->csa_active ||
1562                            csa_vif != vif))
1563                        goto out_unlock;
1564
1565                csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);
1566                if (WARN(csa_id != id_n_color,
1567                         "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
1568                         csa_id, id_n_color))
1569                        goto out_unlock;
1570
1571                IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
1572
1573                schedule_delayed_work(&mvm->cs_tx_unblock_dwork,
1574                                      msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
1575                                                       csa_vif->bss_conf.beacon_int));
1576
1577                ieee80211_csa_finish(csa_vif);
1578
1579                rcu_read_unlock();
1580
1581                RCU_INIT_POINTER(mvm->csa_vif, NULL);
1582                return;
1583        case NL80211_IFTYPE_STATION:
1584                /*
1585                 * if we don't know about an ongoing channel switch,
1586                 * make sure FW cancels it
1587                 */
1588                if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1589                                            CHANNEL_SWITCH_ERROR_NOTIF,
1590                                            0) && !vif->csa_active) {
1591                        IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n");
1592                        iwl_mvm_cancel_channel_switch(mvm, vif, mac_id);
1593                        break;
1594                }
1595
1596                iwl_mvm_csa_client_absent(mvm, vif);
1597                cancel_delayed_work(&mvmvif->csa_work);
1598                ieee80211_chswitch_done(vif, true);
1599                break;
1600        default:
1601                /* should never happen */
1602                WARN_ON_ONCE(1);
1603                break;
1604        }
1605out_unlock:
1606        rcu_read_unlock();
1607}
1608
1609void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm,
1610                                        struct iwl_rx_cmd_buffer *rxb)
1611{
1612        struct iwl_rx_packet *pkt = rxb_addr(rxb);
1613        struct iwl_channel_switch_error_notif *notif = (void *)pkt->data;
1614        struct ieee80211_vif *vif;
1615        u32 id = le32_to_cpu(notif->mac_id);
1616        u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask);
1617
1618        rcu_read_lock();
1619        vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1620        if (!vif) {
1621                rcu_read_unlock();
1622                return;
1623        }
1624
1625        IWL_DEBUG_INFO(mvm, "FW reports CSA error: mac_id=%u, csa_err_mask=%u\n",
1626                       id, csa_err_mask);
1627        if (csa_err_mask & (CS_ERR_COUNT_ERROR |
1628                            CS_ERR_LONG_DELAY_AFTER_CS |
1629                            CS_ERR_TX_BLOCK_TIMER_EXPIRED))
1630                ieee80211_channel_switch_disconnect(vif, true);
1631        rcu_read_unlock();
1632}
1633
1634void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm,
1635                                 struct iwl_rx_cmd_buffer *rxb)
1636{
1637        struct iwl_rx_packet *pkt = rxb_addr(rxb);
1638        struct iwl_missed_vap_notif *mb = (void *)pkt->data;
1639        struct ieee80211_vif *vif;
1640        u32 id = le32_to_cpu(mb->mac_id);
1641
1642        IWL_DEBUG_INFO(mvm,
1643                       "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n",
1644                       le32_to_cpu(mb->mac_id),
1645                       mb->num_beacon_intervals_elapsed,
1646                       mb->profile_periodicity);
1647
1648        rcu_read_lock();
1649
1650        vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true);
1651        if (vif)
1652                iwl_mvm_connection_loss(mvm, vif, "missed vap beacon");
1653
1654        rcu_read_unlock();
1655}
1656