drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
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  21  * along with this program; if not, write to the Free Software
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  23  * USA
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  29  *  Intel Linux Wireless <ilw@linux.intel.com>
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  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  36  * All rights reserved.
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  39  * modification, are permitted provided that the following conditions
  40  * are met:
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  42  *  * Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
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  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
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  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  *****************************************************************************/
  65 #include <linux/kernel.h>
  66 #include <linux/slab.h>
  67 #include <linux/skbuff.h>
  68 #include <linux/netdevice.h>
  69 #include <linux/etherdevice.h>
  70 #include <linux/ip.h>
  71 #include <linux/if_arp.h>
  72 #include <linux/devcoredump.h>
  73 #include <linux/time.h>
  74 #include <net/mac80211.h>
  75 #include <net/ieee80211_radiotap.h>
  76 #include <net/tcp.h>
  77
  78 #include "iwl-op-mode.h"
  79 #include "iwl-io.h"
  80 #include "mvm.h"
  81 #include "sta.h"
  82 #include "time-event.h"
  83 #include "iwl-eeprom-parse.h"
  84 #include "iwl-phy-db.h"
  85 #include "testmode.h"
  86 #include "iwl-fw-error-dump.h"
  87 #include "iwl-prph.h"
  88 #include "iwl-csr.h"
  89 #include "iwl-nvm-parse.h"
  90 #include "fw-dbg.h"
  91
  92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  93         {
  94                 .max = 1,
  95                 .types = BIT(NL80211_IFTYPE_STATION),
  96         },
  97         {
  98                 .max = 1,
  99                 .types = BIT(NL80211_IFTYPE_AP) |
 100                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 101                         BIT(NL80211_IFTYPE_P2P_GO),
 102         },
 103         {
 104                 .max = 1,
 105                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 106         },
 107 };
 108
 109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 110         {
 111                 .num_different_channels = 2,
 112                 .max_interfaces = 3,
 113                 .limits = iwl_mvm_limits,
 114                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 115         },
 116 };
 117
 118 #ifdef CONFIG_PM_SLEEP
 119 static const struct nl80211_wowlan_tcp_data_token_feature
 120 iwl_mvm_wowlan_tcp_token_feature = {
 121         .min_len = 0,
 122         .max_len = 255,
 123         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 124 };
 125
 126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 127         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 128         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 129                             sizeof(struct ethhdr) -
 130                             sizeof(struct iphdr) -
 131                             sizeof(struct tcphdr),
 132         .data_interval_max = 65535, /* __le16 in API */
 133         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 134                             sizeof(struct ethhdr) -
 135                             sizeof(struct iphdr) -
 136                             sizeof(struct tcphdr),
 137         .seq = true,
 138 };
 139 #endif
 140
 141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 142 /*
 143  * Use the reserved field to indicate magic values.
 144  * these values will only be used internally by the driver,
 145  * and won't make it to the fw (reserved will be 0).
 146  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 147  *      be the vif's ip address. in case there is not a single
 148  *      ip address (0, or more than 1), this attribute will
 149  *      be skipped.
 150  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 151  *      the LSB bytes of the vif's mac address
 152  */
 153 enum {
 154         BC_FILTER_MAGIC_NONE = 0,
 155         BC_FILTER_MAGIC_IP,
 156         BC_FILTER_MAGIC_MAC,
 157 };
 158
 159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 160         {
 161                 /* arp */
 162                 .discard = 0,
 163                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 164                 .attrs = {
 165                         {
 166                                 /* frame type - arp, hw type - ethernet */
 167                                 .offset_type =
 168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 169                                 .offset = sizeof(rfc1042_header),
 170                                 .val = cpu_to_be32(0x08060001),
 171                                 .mask = cpu_to_be32(0xffffffff),
 172                         },
 173                         {
 174                                 /* arp dest ip */
 175                                 .offset_type =
 176                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 177                                 .offset = sizeof(rfc1042_header) + 2 +
 178                                           sizeof(struct arphdr) +
 179                                           ETH_ALEN + sizeof(__be32) +
 180                                           ETH_ALEN,
 181                                 .mask = cpu_to_be32(0xffffffff),
 182                                 /* mark it as special field */
 183                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 184                         },
 185                 },
 186         },
 187         {
 188                 /* dhcp offer bcast */
 189                 .discard = 0,
 190                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 191                 .attrs = {
 192                         {
 193                                 /* udp dest port - 68 (bootp client)*/
 194                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 195                                 .offset = offsetof(struct udphdr, dest),
 196                                 .val = cpu_to_be32(0x00440000),
 197                                 .mask = cpu_to_be32(0xffff0000),
 198                         },
 199                         {
 200                                 /* dhcp - lsb bytes of client hw address */
 201                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 202                                 .offset = 38,
 203                                 .mask = cpu_to_be32(0xffffffff),
 204                                 /* mark it as special field */
 205                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 206                         },
 207                 },
 208         },
 209         /* last filter must be empty */
 210         {},
 211 };
 212 #endif
 213
 214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 215 {
 216         if (!iwl_mvm_is_d0i3_supported(mvm))
 217                 return;
 218
 219         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 220         spin_lock_bh(&mvm->refs_lock);
 221         mvm->refs[ref_type]++;
 222         spin_unlock_bh(&mvm->refs_lock);
 223         iwl_trans_ref(mvm->trans);
 224 }
 225
 226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 227 {
 228         if (!iwl_mvm_is_d0i3_supported(mvm))
 229                 return;
 230
 231         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 232         spin_lock_bh(&mvm->refs_lock);
 233         WARN_ON(!mvm->refs[ref_type]--);
 234         spin_unlock_bh(&mvm->refs_lock);
 235         iwl_trans_unref(mvm->trans);
 236 }
 237
 238 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 239                                      enum iwl_mvm_ref_type except_ref)
 240 {
 241         int i, j;
 242
 243         if (!iwl_mvm_is_d0i3_supported(mvm))
 244                 return;
 245
 246         spin_lock_bh(&mvm->refs_lock);
 247         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 248                 if (except_ref == i || !mvm->refs[i])
 249                         continue;
 250
 251                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 252                               i, mvm->refs[i]);
 253                 for (j = 0; j < mvm->refs[i]; j++)
 254                         iwl_trans_unref(mvm->trans);
 255                 mvm->refs[i] = 0;
 256         }
 257         spin_unlock_bh(&mvm->refs_lock);
 258 }
 259
 260 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 261 {
 262         int i;
 263         bool taken = false;
 264
 265         if (!iwl_mvm_is_d0i3_supported(mvm))
 266                 return true;
 267
 268         spin_lock_bh(&mvm->refs_lock);
 269         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 270                 if (mvm->refs[i]) {
 271                         taken = true;
 272                         break;
 273                 }
 274         }
 275         spin_unlock_bh(&mvm->refs_lock);
 276
 277         return taken;
 278 }
 279
 280 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 281 {
 282         iwl_mvm_ref(mvm, ref_type);
 283
 284         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 285                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 286                                 HZ)) {
 287                 WARN_ON_ONCE(1);
 288                 iwl_mvm_unref(mvm, ref_type);
 289                 return -EIO;
 290         }
 291
 292         return 0;
 293 }
 294
 295 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 296 {
 297         int i;
 298
 299         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 300         for (i = 0; i < NUM_PHY_CTX; i++) {
 301                 mvm->phy_ctxts[i].id = i;
 302                 mvm->phy_ctxts[i].ref = 0;
 303         }
 304 }
 305
 306 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 307                                                   const char *alpha2,
 308                                                   enum iwl_mcc_source src_id,
 309                                                   bool *changed)
 310 {
 311         struct ieee80211_regdomain *regd = NULL;
 312         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 313         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 314         struct iwl_mcc_update_resp *resp;
 315
 316         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 317
 318         lockdep_assert_held(&mvm->mutex);
 319
 320         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 321         if (IS_ERR_OR_NULL(resp)) {
 322                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 323                               PTR_ERR_OR_ZERO(resp));
 324                 goto out;
 325         }
 326
 327         if (changed)
 328                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 329
 330         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 331                                       __le32_to_cpu(resp->n_channels),
 332                                       resp->channels,
 333                                       __le16_to_cpu(resp->mcc));
 334         /* Store the return source id */
 335         src_id = resp->source_id;
 336         kfree(resp);
 337         if (IS_ERR_OR_NULL(regd)) {
 338                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 339                               PTR_ERR_OR_ZERO(regd));
 340                 goto out;
 341         }
 342
 343         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 344                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 345         mvm->lar_regdom_set = true;
 346         mvm->mcc_src = src_id;
 347
 348 out:
 349         return regd;
 350 }
 351
 352 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 353 {
 354         bool changed;
 355         struct ieee80211_regdomain *regd;
 356
 357         if (!iwl_mvm_is_lar_supported(mvm))
 358                 return;
 359
 360         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 361         if (!IS_ERR_OR_NULL(regd)) {
 362                 /* only update the regulatory core if changed */
 363                 if (changed)
 364                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 365
 366                 kfree(regd);
 367         }
 368 }
 369
 370 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 371                                                           bool *changed)
 372 {
 373         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 374                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 375                                      MCC_SOURCE_GET_CURRENT :
 376                                      MCC_SOURCE_OLD_FW, changed);
 377 }
 378
 379 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 380 {
 381         enum iwl_mcc_source used_src;
 382         struct ieee80211_regdomain *regd;
 383         int ret;
 384         bool changed;
 385         const struct ieee80211_regdomain *r =
 386                         rtnl_dereference(mvm->hw->wiphy->regd);
 387
 388         if (!r)
 389                 return -ENOENT;
 390
 391         /* save the last source in case we overwrite it below */
 392         used_src = mvm->mcc_src;
 393         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 394                 /* Notify the firmware we support wifi location updates */
 395                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 396                 if (!IS_ERR_OR_NULL(regd))
 397                         kfree(regd);
 398         }
 399
 400         /* Now set our last stored MCC and source */
 401         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 402                                      &changed);
 403         if (IS_ERR_OR_NULL(regd))
 404                 return -EIO;
 405
 406         /* update cfg80211 if the regdomain was changed */
 407         if (changed)
 408                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 409         else
 410                 ret = 0;
 411
 412         kfree(regd);
 413         return ret;
 414 }
 415
 416 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 417 {
 418         struct ieee80211_hw *hw = mvm->hw;
 419         int num_mac, ret, i;
 420         static const u32 mvm_ciphers[] = {
 421                 WLAN_CIPHER_SUITE_WEP40,
 422                 WLAN_CIPHER_SUITE_WEP104,
 423                 WLAN_CIPHER_SUITE_TKIP,
 424                 WLAN_CIPHER_SUITE_CCMP,
 425         };
 426
 427         /* Tell mac80211 our characteristics */
 428         ieee80211_hw_set(hw, SIGNAL_DBM);
 429         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 430         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 431         ieee80211_hw_set(hw, QUEUE_CONTROL);
 432         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 433         ieee80211_hw_set(hw, SUPPORTS_PS);
 434         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 435         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 436         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 437         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 438         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 439         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 440         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 441
 442         if (mvm->trans->max_skb_frags)
 443                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 444
 445         hw->queues = mvm->first_agg_queue;
 446         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 447         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 448                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 449         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 450                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 451         hw->rate_control_algorithm = "iwl-mvm-rs";
 452         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 453         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 454
 455         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
 456         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 457         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 458         hw->wiphy->cipher_suites = mvm->ciphers;
 459
 460         /*
 461          * Enable 11w if advertised by firmware and software crypto
 462          * is not enabled (as the firmware will interpret some mgmt
 463          * packets, so enabling it with software crypto isn't safe)
 464          */
 465         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 466             !iwlwifi_mod_params.sw_crypto) {
 467                 ieee80211_hw_set(hw, MFP_CAPABLE);
 468                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 469                         WLAN_CIPHER_SUITE_AES_CMAC;
 470                 hw->wiphy->n_cipher_suites++;
 471         }
 472
 473         /* currently FW API supports only one optional cipher scheme */
 474         if (mvm->fw->cs[0].cipher) {
 475                 mvm->hw->n_cipher_schemes = 1;
 476                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 477                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 478                         mvm->fw->cs[0].cipher;
 479                 hw->wiphy->n_cipher_suites++;
 480         }
 481
 482         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 483         hw->wiphy->features |=
 484                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 485                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 486                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 487
 488         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 489         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 490         hw->chanctx_data_size = sizeof(u16);
 491
 492         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 493                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 494                 BIT(NL80211_IFTYPE_AP) |
 495                 BIT(NL80211_IFTYPE_P2P_GO) |
 496                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 497                 BIT(NL80211_IFTYPE_ADHOC);
 498
 499         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 500         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 501         if (iwl_mvm_is_lar_supported(mvm))
 502                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 503         else
 504                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 505                                                REGULATORY_DISABLE_BEACON_HINTS;
 506
 507         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 508                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 509
 510         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 511
 512         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 513         hw->wiphy->n_iface_combinations =
 514                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 515
 516         hw->wiphy->max_remain_on_channel_duration = 10000;
 517         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 518         /* we can compensate an offset of up to 3 channels = 15 MHz */
 519         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 520
 521         /* Extract MAC address */
 522         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 523         hw->wiphy->addresses = mvm->addresses;
 524         hw->wiphy->n_addresses = 1;
 525
 526         /* Extract additional MAC addresses if available */
 527         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 528                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 529
 530         for (i = 1; i < num_mac; i++) {
 531                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 532                        ETH_ALEN);
 533                 mvm->addresses[i].addr[5]++;
 534                 hw->wiphy->n_addresses++;
 535         }
 536
 537         iwl_mvm_reset_phy_ctxts(mvm);
 538
 539         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 540
 541         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 542
 543         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 544         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 545                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 546
 547         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 548                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 549         else
 550                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 551
 552         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 553                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 554                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 555         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 556                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 557                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 558
 559                 if (fw_has_capa(&mvm->fw->ucode_capa,
 560                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 561                     fw_has_api(&mvm->fw->ucode_capa,
 562                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 563                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 564                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 565         }
 566
 567         hw->wiphy->hw_version = mvm->trans->hw_id;
 568
 569         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 570                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 571         else
 572                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 573
 574         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 575         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 576         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 577         /* we create the 802.11 header and zero length SSID IE. */
 578         hw->wiphy->max_sched_scan_ie_len =
 579                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 580         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 581         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 582
 583         /*
 584          * the firmware uses u8 for num of iterations, but 0xff is saved for
 585          * infinite loop, so the maximum number of iterations is actually 254.
 586          */
 587         hw->wiphy->max_sched_scan_plan_iterations = 254;
 588
 589         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 590                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 591                                NL80211_FEATURE_P2P_GO_OPPPS |
 592                                NL80211_FEATURE_DYNAMIC_SMPS |
 593                                NL80211_FEATURE_STATIC_SMPS |
 594                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 595
 596         if (fw_has_capa(&mvm->fw->ucode_capa,
 597                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 598                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 599         if (fw_has_capa(&mvm->fw->ucode_capa,
 600                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 601                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 602
 603         if (fw_has_capa(&mvm->fw->ucode_capa,
 604                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 605                 hw->wiphy->features |=
 606                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 607
 608         if (fw_has_capa(&mvm->fw->ucode_capa,
 609                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 610                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 611
 612         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 613
 614 #ifdef CONFIG_PM_SLEEP
 615         if (iwl_mvm_is_d0i3_supported(mvm) &&
 616             device_can_wakeup(mvm->trans->dev)) {
 617                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 618                 hw->wiphy->wowlan = &mvm->wowlan;
 619         }
 620
 621         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 622             mvm->trans->ops->d3_suspend &&
 623             mvm->trans->ops->d3_resume &&
 624             device_can_wakeup(mvm->trans->dev)) {
 625                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 626                                      WIPHY_WOWLAN_DISCONNECT |
 627                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 628                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 629                                      WIPHY_WOWLAN_NET_DETECT;
 630                 if (!iwlwifi_mod_params.sw_crypto)
 631                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 632                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 633                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 634
 635                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 636                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 637                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 638                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 639                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 640                 hw->wiphy->wowlan = &mvm->wowlan;
 641         }
 642 #endif
 643
 644 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 645         /* assign default bcast filtering configuration */
 646         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 647 #endif
 648
 649         ret = iwl_mvm_leds_init(mvm);
 650         if (ret)
 651                 return ret;
 652
 653         if (fw_has_capa(&mvm->fw->ucode_capa,
 654                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 655                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 656                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 657                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 658         }
 659
 660         if (fw_has_capa(&mvm->fw->ucode_capa,
 661                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 662                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 663                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 664         }
 665
 666         hw->netdev_features |= mvm->cfg->features;
 667         if (!iwl_mvm_is_csum_supported(mvm))
 668                 hw->netdev_features &= ~NETIF_F_RXCSUM;
 669
 670         ret = ieee80211_register_hw(mvm->hw);
 671         if (ret)
 672                 iwl_mvm_leds_exit(mvm);
 673
 674         return ret;
 675 }
 676
 677 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 678                              struct ieee80211_sta *sta,
 679                              struct sk_buff *skb)
 680 {
 681         struct iwl_mvm_sta *mvmsta;
 682         bool defer = false;
 683
 684         /*
 685          * double check the IN_D0I3 flag both before and after
 686          * taking the spinlock, in order to prevent taking
 687          * the spinlock when not needed.
 688          */
 689         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 690                 return false;
 691
 692         spin_lock(&mvm->d0i3_tx_lock);
 693         /*
 694          * testing the flag again ensures the skb dequeue
 695          * loop (on d0i3 exit) hasn't run yet.
 696          */
 697         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 698                 goto out;
 699
 700         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 701         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 702             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 703                 goto out;
 704
 705         __skb_queue_tail(&mvm->d0i3_tx, skb);
 706         ieee80211_stop_queues(mvm->hw);
 707
 708         /* trigger wakeup */
 709         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 710         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 711
 712         defer = true;
 713 out:
 714         spin_unlock(&mvm->d0i3_tx_lock);
 715         return defer;
 716 }
 717
 718 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 719                            struct ieee80211_tx_control *control,
 720                            struct sk_buff *skb)
 721 {
 722         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 723         struct ieee80211_sta *sta = control->sta;
 724         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 725         struct ieee80211_hdr *hdr = (void *)skb->data;
 726
 727         if (iwl_mvm_is_radio_killed(mvm)) {
 728                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 729                 goto drop;
 730         }
 731
 732         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 733             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 734             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 735                 goto drop;
 736
 737         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 738         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 739                      ieee80211_is_mgmt(hdr->frame_control) &&
 740                      !ieee80211_is_deauth(hdr->frame_control) &&
 741                      !ieee80211_is_disassoc(hdr->frame_control) &&
 742                      !ieee80211_is_action(hdr->frame_control)))
 743                 sta = NULL;
 744
 745         if (sta) {
 746                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 747                         return;
 748                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 749                         goto drop;
 750                 return;
 751         }
 752
 753         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 754                 goto drop;
 755         return;
 756  drop:
 757         ieee80211_free_txskb(hw, skb);
 758 }
 759
 760 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 761 {
 762         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 763                 return false;
 764         return true;
 765 }
 766
 767 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 768 {
 769         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 770                 return false;
 771         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 772                 return true;
 773
 774         /* enabled by default */
 775         return true;
 776 }
 777
 778 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 779         do {                                                    \
 780                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 781                         break;                                  \
 782                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 783         } while (0)
 784
 785 static void
 786 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 787                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 788                             enum ieee80211_ampdu_mlme_action action)
 789 {
 790         struct iwl_fw_dbg_trigger_tlv *trig;
 791         struct iwl_fw_dbg_trigger_ba *ba_trig;
 792
 793         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 794                 return;
 795
 796         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 797         ba_trig = (void *)trig->data;
 798
 799         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 800                 return;
 801
 802         switch (action) {
 803         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 804                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 805                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 806
 807                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 808                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 809                                  sta->addr, tid, tid_data->ssn);
 810                 break;
 811                 }
 812         case IEEE80211_AMPDU_TX_STOP_CONT:
 813                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 814                                  "TX AGG STOP: MAC %pM tid %d\n",
 815                                  sta->addr, tid);
 816                 break;
 817         case IEEE80211_AMPDU_RX_START:
 818                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 819                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 820                                  sta->addr, tid, rx_ba_ssn);
 821                 break;
 822         case IEEE80211_AMPDU_RX_STOP:
 823                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 824                                  "RX AGG STOP: MAC %pM tid %d\n",
 825                                  sta->addr, tid);
 826                 break;
 827         default:
 828                 break;
 829         }
 830 }
 831
 832 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 833                                     struct ieee80211_vif *vif,
 834                                     enum ieee80211_ampdu_mlme_action action,
 835                                     struct ieee80211_sta *sta, u16 tid,
 836                                     u16 *ssn, u8 buf_size, bool amsdu)
 837 {
 838         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 839         int ret;
 840         bool tx_agg_ref = false;
 841
 842         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 843                      sta->addr, tid, action);
 844
 845         if (!(mvm->nvm_data->sku_cap_11n_enable))
 846                 return -EACCES;
 847
 848         /* return from D0i3 before starting a new Tx aggregation */
 849         switch (action) {
 850         case IEEE80211_AMPDU_TX_START:
 851         case IEEE80211_AMPDU_TX_STOP_CONT:
 852         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 853         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 854         case IEEE80211_AMPDU_TX_OPERATIONAL:
 855                 /*
 856                  * for tx start, wait synchronously until D0i3 exit to
 857                  * get the correct sequence number for the tid.
 858                  * additionally, some other ampdu actions use direct
 859                  * target access, which is not handled automatically
 860                  * by the trans layer (unlike commands), so wait for
 861                  * d0i3 exit in these cases as well.
 862                  */
 863                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 864                 if (ret)
 865                         return ret;
 866
 867                 tx_agg_ref = true;
 868                 break;
 869         default:
 870                 break;
 871         }
 872
 873         mutex_lock(&mvm->mutex);
 874
 875         switch (action) {
 876         case IEEE80211_AMPDU_RX_START:
 877                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 878                         ret = -EINVAL;
 879                         break;
 880                 }
 881                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 882                 break;
 883         case IEEE80211_AMPDU_RX_STOP:
 884                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 885                 break;
 886         case IEEE80211_AMPDU_TX_START:
 887                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 888                         ret = -EINVAL;
 889                         break;
 890                 }
 891                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 892                 break;
 893         case IEEE80211_AMPDU_TX_STOP_CONT:
 894                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 895                 break;
 896         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 897         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 898                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 899                 break;
 900         case IEEE80211_AMPDU_TX_OPERATIONAL:
 901                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 902                 break;
 903         default:
 904                 WARN_ON_ONCE(1);
 905                 ret = -EINVAL;
 906                 break;
 907         }
 908
 909         if (!ret) {
 910                 u16 rx_ba_ssn = 0;
 911
 912                 if (action == IEEE80211_AMPDU_RX_START)
 913                         rx_ba_ssn = *ssn;
 914
 915                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 916                                             rx_ba_ssn, action);
 917         }
 918         mutex_unlock(&mvm->mutex);
 919
 920         /*
 921          * If the tid is marked as started, we won't use it for offloaded
 922          * traffic on the next D0i3 entry. It's safe to unref.
 923          */
 924         if (tx_agg_ref)
 925                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 926
 927         return ret;
 928 }
 929
 930 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 931                                      struct ieee80211_vif *vif)
 932 {
 933         struct iwl_mvm *mvm = data;
 934         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 935
 936         mvmvif->uploaded = false;
 937         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 938
 939         spin_lock_bh(&mvm->time_event_lock);
 940         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 941         spin_unlock_bh(&mvm->time_event_lock);
 942
 943         mvmvif->phy_ctxt = NULL;
 944         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 945 }
 946
 947 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 948 {
 949         /* clear the D3 reconfig, we only need it to avoid dumping a
 950          * firmware coredump on reconfiguration, we shouldn't do that
 951          * on D3->D0 transition
 952          */
 953         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
 954                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
 955                 iwl_mvm_fw_error_dump(mvm);
 956         }
 957
 958         /* cleanup all stale references (scan, roc), but keep the
 959          * ucode_down ref until reconfig is complete
 960          */
 961         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 962
 963         iwl_trans_stop_device(mvm->trans);
 964
 965         mvm->scan_status = 0;
 966         mvm->ps_disabled = false;
 967         mvm->calibrating = false;
 968
 969         /* just in case one was running */
 970         ieee80211_remain_on_channel_expired(mvm->hw);
 971
 972         /*
 973          * cleanup all interfaces, even inactive ones, as some might have
 974          * gone down during the HW restart
 975          */
 976         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
 977
 978         mvm->p2p_device_vif = NULL;
 979         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 980
 981         iwl_mvm_reset_phy_ctxts(mvm);
 982         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 983         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 984         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 985         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 986         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 987         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
 988         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
 989         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
 990
 991         ieee80211_wake_queues(mvm->hw);
 992
 993         /* clear any stale d0i3 state */
 994         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
 995
 996         mvm->vif_count = 0;
 997         mvm->rx_ba_sessions = 0;
 998         mvm->fw_dbg_conf = FW_DBG_INVALID;
 999         mvm->scan_type = IWL_SCAN_TYPE_NOT_SET;
1000
1001         /* keep statistics ticking */
1002         iwl_mvm_accu_radio_stats(mvm);
1003 }
1004
1005 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1006 {
1007         int ret;
1008
1009         lockdep_assert_held(&mvm->mutex);
1010
1011         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1012                 /* Clean up some internal and mac80211 state on restart */
1013                 iwl_mvm_restart_cleanup(mvm);
1014         } else {
1015                 /* Hold the reference to prevent runtime suspend while
1016                  * the start procedure runs.  It's a bit confusing
1017                  * that the UCODE_DOWN reference is taken, but it just
1018                  * means "UCODE is not UP yet". ( TODO: rename this
1019                  * reference).
1020                  */
1021                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1022         }
1023         ret = iwl_mvm_up(mvm);
1024
1025         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1026                 /* Something went wrong - we need to finish some cleanup
1027                  * that normally iwl_mvm_mac_restart_complete() below
1028                  * would do.
1029                  */
1030                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1031                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1032         }
1033
1034         return ret;
1035 }
1036
1037 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1038 {
1039         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1040         int ret;
1041
1042         /* Some hw restart cleanups must not hold the mutex */
1043         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1044                 /*
1045                  * Make sure we are out of d0i3. This is needed
1046                  * to make sure the reference accounting is correct
1047                  * (and there is no stale d0i3_exit_work).
1048                  */
1049                 wait_event_timeout(mvm->d0i3_exit_waitq,
1050                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1051                                              &mvm->status),
1052                                    HZ);
1053         }
1054
1055         mutex_lock(&mvm->mutex);
1056         ret = __iwl_mvm_mac_start(mvm);
1057         mutex_unlock(&mvm->mutex);
1058
1059         return ret;
1060 }
1061
1062 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1063 {
1064         int ret;
1065
1066         mutex_lock(&mvm->mutex);
1067
1068         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1069         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1070         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1071         if (ret)
1072                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1073                         ret);
1074
1075         /* allow transport/FW low power modes */
1076         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1077
1078         /*
1079          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1080          * of packets the FW sent out, so we must reconnect.
1081          */
1082         iwl_mvm_teardown_tdls_peers(mvm);
1083
1084         mutex_unlock(&mvm->mutex);
1085 }
1086
1087 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1088 {
1089         if (!iwl_mvm_is_d0i3_supported(mvm))
1090                 return;
1091
1092         if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1093                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1094                                         !test_bit(IWL_MVM_STATUS_IN_D0I3,
1095                                                   &mvm->status),
1096                                         HZ))
1097                         WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1098 }
1099
1100 static void
1101 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1102                               enum ieee80211_reconfig_type reconfig_type)
1103 {
1104         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1105
1106         switch (reconfig_type) {
1107         case IEEE80211_RECONFIG_TYPE_RESTART:
1108                 iwl_mvm_restart_complete(mvm);
1109                 break;
1110         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1111                 iwl_mvm_resume_complete(mvm);
1112                 break;
1113         }
1114 }
1115
1116 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1117 {
1118         lockdep_assert_held(&mvm->mutex);
1119
1120         /* firmware counters are obviously reset now, but we shouldn't
1121          * partially track so also clear the fw_reset_accu counters.
1122          */
1123         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1124
1125         /* async_handlers_wk is now blocked */
1126
1127         /*
1128          * The work item could be running or queued if the
1129          * ROC time event stops just as we get here.
1130          */
1131         flush_work(&mvm->roc_done_wk);
1132
1133         iwl_trans_stop_device(mvm->trans);
1134
1135         iwl_mvm_async_handlers_purge(mvm);
1136         /* async_handlers_list is empty and will stay empty: HW is stopped */
1137
1138         /* the fw is stopped, the aux sta is dead: clean up driver state */
1139         iwl_mvm_del_aux_sta(mvm);
1140
1141         /*
1142          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1143          * won't be called in this case).
1144          * But make sure to cleanup interfaces that have gone down before/during
1145          * HW restart was requested.
1146          */
1147         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1148                 ieee80211_iterate_interfaces(mvm->hw, 0,
1149                                              iwl_mvm_cleanup_iterator, mvm);
1150
1151         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1152          * make sure there's nothing left there and warn if any is found.
1153          */
1154         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1155                 int i;
1156
1157                 for (i = 0; i < mvm->max_scans; i++) {
1158                         if (WARN_ONCE(mvm->scan_uid_status[i],
1159                                       "UMAC scan UID %d status was not cleaned\n",
1160                                       i))
1161                                 mvm->scan_uid_status[i] = 0;
1162                 }
1163         }
1164
1165         mvm->ucode_loaded = false;
1166 }
1167
1168 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1169 {
1170         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1171
1172         flush_work(&mvm->d0i3_exit_work);
1173         flush_work(&mvm->async_handlers_wk);
1174         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1175         iwl_mvm_free_fw_dump_desc(mvm);
1176
1177         mutex_lock(&mvm->mutex);
1178         __iwl_mvm_mac_stop(mvm);
1179         mutex_unlock(&mvm->mutex);
1180
1181         /*
1182          * The worker might have been waiting for the mutex, let it run and
1183          * discover that its list is now empty.
1184          */
1185         cancel_work_sync(&mvm->async_handlers_wk);
1186 }
1187
1188 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1189 {
1190         u16 i;
1191
1192         lockdep_assert_held(&mvm->mutex);
1193
1194         for (i = 0; i < NUM_PHY_CTX; i++)
1195                 if (!mvm->phy_ctxts[i].ref)
1196                         return &mvm->phy_ctxts[i];
1197
1198         IWL_ERR(mvm, "No available PHY context\n");
1199         return NULL;
1200 }
1201
1202 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1203                                 s16 tx_power)
1204 {
1205         struct iwl_dev_tx_power_cmd cmd = {
1206                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1207                 .v2.mac_context_id =
1208                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1209                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1210         };
1211         int len = sizeof(cmd);
1212
1213         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1214                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1215
1216         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1217                 len = sizeof(cmd.v2);
1218
1219         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1220 }
1221
1222 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1223                                      struct ieee80211_vif *vif)
1224 {
1225         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1226         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1227         int ret;
1228
1229         mvmvif->mvm = mvm;
1230
1231         /*
1232          * make sure D0i3 exit is completed, otherwise a target access
1233          * during tx queue configuration could be done when still in
1234          * D0i3 state.
1235          */
1236         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1237         if (ret)
1238                 return ret;
1239
1240         /*
1241          * Not much to do here. The stack will not allow interface
1242          * types or combinations that we didn't advertise, so we
1243          * don't really have to check the types.
1244          */
1245
1246         mutex_lock(&mvm->mutex);
1247
1248         /* make sure that beacon statistics don't go backwards with FW reset */
1249         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1250                 mvmvif->beacon_stats.accu_num_beacons +=
1251                         mvmvif->beacon_stats.num_beacons;
1252
1253         /* Allocate resources for the MAC context, and add it to the fw  */
1254         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1255         if (ret)
1256                 goto out_unlock;
1257
1258         /* Counting number of interfaces is needed for legacy PM */
1259         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1260                 mvm->vif_count++;
1261
1262         /*
1263          * The AP binding flow can be done only after the beacon
1264          * template is configured (which happens only in the mac80211
1265          * start_ap() flow), and adding the broadcast station can happen
1266          * only after the binding.
1267          * In addition, since modifying the MAC before adding a bcast
1268          * station is not allowed by the FW, delay the adding of MAC context to
1269          * the point where we can also add the bcast station.
1270          * In short: there's not much we can do at this point, other than
1271          * allocating resources :)
1272          */
1273         if (vif->type == NL80211_IFTYPE_AP ||
1274             vif->type == NL80211_IFTYPE_ADHOC) {
1275                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1276                 if (ret) {
1277                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1278                         goto out_release;
1279                 }
1280
1281                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1282                 goto out_unlock;
1283         }
1284
1285         mvmvif->features |= hw->netdev_features;
1286
1287         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1288         if (ret)
1289                 goto out_release;
1290
1291         ret = iwl_mvm_power_update_mac(mvm);
1292         if (ret)
1293                 goto out_remove_mac;
1294
1295         /* beacon filtering */
1296         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1297         if (ret)
1298                 goto out_remove_mac;
1299
1300         if (!mvm->bf_allowed_vif &&
1301             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1302                 mvm->bf_allowed_vif = mvmvif;
1303                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1304                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1305         }
1306
1307         /*
1308          * P2P_DEVICE interface does not have a channel context assigned to it,
1309          * so a dedicated PHY context is allocated to it and the corresponding
1310          * MAC context is bound to it at this stage.
1311          */
1312         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1313
1314                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1315                 if (!mvmvif->phy_ctxt) {
1316                         ret = -ENOSPC;
1317                         goto out_free_bf;
1318                 }
1319
1320                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1321                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1322                 if (ret)
1323                         goto out_unref_phy;
1324
1325                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1326                 if (ret)
1327                         goto out_unbind;
1328
1329                 /* Save a pointer to p2p device vif, so it can later be used to
1330                  * update the p2p device MAC when a GO is started/stopped */
1331                 mvm->p2p_device_vif = vif;
1332         }
1333
1334         iwl_mvm_vif_dbgfs_register(mvm, vif);
1335         goto out_unlock;
1336
1337  out_unbind:
1338         iwl_mvm_binding_remove_vif(mvm, vif);
1339  out_unref_phy:
1340         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1341  out_free_bf:
1342         if (mvm->bf_allowed_vif == mvmvif) {
1343                 mvm->bf_allowed_vif = NULL;
1344                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1345                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1346         }
1347  out_remove_mac:
1348         mvmvif->phy_ctxt = NULL;
1349         iwl_mvm_mac_ctxt_remove(mvm, vif);
1350  out_release:
1351         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1352                 mvm->vif_count--;
1353
1354         iwl_mvm_mac_ctxt_release(mvm, vif);
1355  out_unlock:
1356         mutex_unlock(&mvm->mutex);
1357
1358         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1359
1360         return ret;
1361 }
1362
1363 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1364                                         struct ieee80211_vif *vif)
1365 {
1366         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1367
1368         if (tfd_msk) {
1369                 /*
1370                  * mac80211 first removes all the stations of the vif and
1371                  * then removes the vif. When it removes a station it also
1372                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1373                  * of all the stations of this vif are closed, and the queues
1374                  * of these AMPDU sessions are properly closed.
1375                  * We still need to take care of the shared queues of the vif.
1376                  * Flush them here.
1377                  */
1378                 mutex_lock(&mvm->mutex);
1379                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1380                 mutex_unlock(&mvm->mutex);
1381
1382                 /*
1383                  * There are transports that buffer a few frames in the host.
1384                  * For these, the flush above isn't enough since while we were
1385                  * flushing, the transport might have sent more frames to the
1386                  * device. To solve this, wait here until the transport is
1387                  * empty. Technically, this could have replaced the flush
1388                  * above, but flush is much faster than draining. So flush
1389                  * first, and drain to make sure we have no frames in the
1390                  * transport anymore.
1391                  * If a station still had frames on the shared queues, it is
1392                  * already marked as draining, so to complete the draining, we
1393                  * just need to wait until the transport is empty.
1394                  */
1395                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1396         }
1397
1398         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1399                 /*
1400                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1401                  * We assume here that all the packets sent to the OFFCHANNEL
1402                  * queue are sent in ROC session.
1403                  */
1404                 flush_work(&mvm->roc_done_wk);
1405         } else {
1406                 /*
1407                  * By now, all the AC queues are empty. The AGG queues are
1408                  * empty too. We already got all the Tx responses for all the
1409                  * packets in the queues. The drain work can have been
1410                  * triggered. Flush it.
1411                  */
1412                 flush_work(&mvm->sta_drained_wk);
1413         }
1414 }
1415
1416 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1417                                          struct ieee80211_vif *vif)
1418 {
1419         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1420         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1421
1422         iwl_mvm_prepare_mac_removal(mvm, vif);
1423
1424         mutex_lock(&mvm->mutex);
1425
1426         if (mvm->bf_allowed_vif == mvmvif) {
1427                 mvm->bf_allowed_vif = NULL;
1428                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1429                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1430         }
1431
1432         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1433
1434         /*
1435          * For AP/GO interface, the tear down of the resources allocated to the
1436          * interface is be handled as part of the stop_ap flow.
1437          */
1438         if (vif->type == NL80211_IFTYPE_AP ||
1439             vif->type == NL80211_IFTYPE_ADHOC) {
1440 #ifdef CONFIG_NL80211_TESTMODE
1441                 if (vif == mvm->noa_vif) {
1442                         mvm->noa_vif = NULL;
1443                         mvm->noa_duration = 0;
1444                 }
1445 #endif
1446                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1447                 goto out_release;
1448         }
1449
1450         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1451                 mvm->p2p_device_vif = NULL;
1452                 iwl_mvm_rm_bcast_sta(mvm, vif);
1453                 iwl_mvm_binding_remove_vif(mvm, vif);
1454                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1455                 mvmvif->phy_ctxt = NULL;
1456         }
1457
1458         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1459                 mvm->vif_count--;
1460
1461         iwl_mvm_power_update_mac(mvm);
1462         iwl_mvm_mac_ctxt_remove(mvm, vif);
1463
1464 out_release:
1465         iwl_mvm_mac_ctxt_release(mvm, vif);
1466         mutex_unlock(&mvm->mutex);
1467 }
1468
1469 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1470 {
1471         return 0;
1472 }
1473
1474 struct iwl_mvm_mc_iter_data {
1475         struct iwl_mvm *mvm;
1476         int port_id;
1477 };
1478
1479 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1480                                       struct ieee80211_vif *vif)
1481 {
1482         struct iwl_mvm_mc_iter_data *data = _data;
1483         struct iwl_mvm *mvm = data->mvm;
1484         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1485         int ret, len;
1486
1487         /* if we don't have free ports, mcast frames will be dropped */
1488         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1489                 return;
1490
1491         if (vif->type != NL80211_IFTYPE_STATION ||
1492             !vif->bss_conf.assoc)
1493                 return;
1494
1495         cmd->port_id = data->port_id++;
1496         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1497         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1498
1499         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1500         if (ret)
1501                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1502 }
1503
1504 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1505 {
1506         struct iwl_mvm_mc_iter_data iter_data = {
1507                 .mvm = mvm,
1508         };
1509
1510         lockdep_assert_held(&mvm->mutex);
1511
1512         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1513                 return;
1514
1515         ieee80211_iterate_active_interfaces_atomic(
1516                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1517                 iwl_mvm_mc_iface_iterator, &iter_data);
1518 }
1519
1520 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1521                                      struct netdev_hw_addr_list *mc_list)
1522 {
1523         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1524         struct iwl_mcast_filter_cmd *cmd;
1525         struct netdev_hw_addr *addr;
1526         int addr_count;
1527         bool pass_all;
1528         int len;
1529
1530         addr_count = netdev_hw_addr_list_count(mc_list);
1531         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1532                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1533         if (pass_all)
1534                 addr_count = 0;
1535
1536         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1537         cmd = kzalloc(len, GFP_ATOMIC);
1538         if (!cmd)
1539                 return 0;
1540
1541         if (pass_all) {
1542                 cmd->pass_all = 1;
1543                 return (u64)(unsigned long)cmd;
1544         }
1545
1546         netdev_hw_addr_list_for_each(addr, mc_list) {
1547                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1548                                    cmd->count, addr->addr);
1549                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1550                        addr->addr, ETH_ALEN);
1551                 cmd->count++;
1552         }
1553
1554         return (u64)(unsigned long)cmd;
1555 }
1556
1557 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1558                                      unsigned int changed_flags,
1559                                      unsigned int *total_flags,
1560                                      u64 multicast)
1561 {
1562         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1563         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1564
1565         mutex_lock(&mvm->mutex);
1566
1567         /* replace previous configuration */
1568         kfree(mvm->mcast_filter_cmd);
1569         mvm->mcast_filter_cmd = cmd;
1570
1571         if (!cmd)
1572                 goto out;
1573
1574         iwl_mvm_recalc_multicast(mvm);
1575 out:
1576         mutex_unlock(&mvm->mutex);
1577         *total_flags = 0;
1578 }
1579
1580 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1581                                         struct ieee80211_vif *vif,
1582                                         unsigned int filter_flags,
1583                                         unsigned int changed_flags)
1584 {
1585         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1586
1587         /* We support only filter for probe requests */
1588         if (!(changed_flags & FIF_PROBE_REQ))
1589                 return;
1590
1591         /* Supported only for p2p client interfaces */
1592         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1593             !vif->p2p)
1594                 return;
1595
1596         mutex_lock(&mvm->mutex);
1597         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1598         mutex_unlock(&mvm->mutex);
1599 }
1600
1601 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1602 struct iwl_bcast_iter_data {
1603         struct iwl_mvm *mvm;
1604         struct iwl_bcast_filter_cmd *cmd;
1605         u8 current_filter;
1606 };
1607
1608 static void
1609 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1610                          const struct iwl_fw_bcast_filter *in_filter,
1611                          struct iwl_fw_bcast_filter *out_filter)
1612 {
1613         struct iwl_fw_bcast_filter_attr *attr;
1614         int i;
1615
1616         memcpy(out_filter, in_filter, sizeof(*out_filter));
1617
1618         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1619                 attr = &out_filter->attrs[i];
1620
1621                 if (!attr->mask)
1622                         break;
1623
1624                 switch (attr->reserved1) {
1625                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1626                         if (vif->bss_conf.arp_addr_cnt != 1) {
1627                                 attr->mask = 0;
1628                                 continue;
1629                         }
1630
1631                         attr->val = vif->bss_conf.arp_addr_list[0];
1632                         break;
1633                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1634                         attr->val = *(__be32 *)&vif->addr[2];
1635                         break;
1636                 default:
1637                         break;
1638                 }
1639                 attr->reserved1 = 0;
1640                 out_filter->num_attrs++;
1641         }
1642 }
1643
1644 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1645                                           struct ieee80211_vif *vif)
1646 {
1647         struct iwl_bcast_iter_data *data = _data;
1648         struct iwl_mvm *mvm = data->mvm;
1649         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1650         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1651         struct iwl_fw_bcast_mac *bcast_mac;
1652         int i;
1653
1654         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1655                 return;
1656
1657         bcast_mac = &cmd->macs[mvmvif->id];
1658
1659         /*
1660          * enable filtering only for associated stations, but not for P2P
1661          * Clients
1662          */
1663         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1664             !vif->bss_conf.assoc)
1665                 return;
1666
1667         bcast_mac->default_discard = 1;
1668
1669         /* copy all configured filters */
1670         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1671                 /*
1672                  * Make sure we don't exceed our filters limit.
1673                  * if there is still a valid filter to be configured,
1674                  * be on the safe side and just allow bcast for this mac.
1675                  */
1676                 if (WARN_ON_ONCE(data->current_filter >=
1677                                  ARRAY_SIZE(cmd->filters))) {
1678                         bcast_mac->default_discard = 0;
1679                         bcast_mac->attached_filters = 0;
1680                         break;
1681                 }
1682
1683                 iwl_mvm_set_bcast_filter(vif,
1684                                          &mvm->bcast_filters[i],
1685                                          &cmd->filters[data->current_filter]);
1686
1687                 /* skip current filter if it contains no attributes */
1688                 if (!cmd->filters[data->current_filter].num_attrs)
1689                         continue;
1690
1691                 /* attach the filter to current mac */
1692                 bcast_mac->attached_filters |=
1693                                 cpu_to_le16(BIT(data->current_filter));
1694
1695                 data->current_filter++;
1696         }
1697 }
1698
1699 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1700                                     struct iwl_bcast_filter_cmd *cmd)
1701 {
1702         struct iwl_bcast_iter_data iter_data = {
1703                 .mvm = mvm,
1704                 .cmd = cmd,
1705         };
1706
1707         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1708                 return false;
1709
1710         memset(cmd, 0, sizeof(*cmd));
1711         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1712         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1713
1714 #ifdef CONFIG_IWLWIFI_DEBUGFS
1715         /* use debugfs filters/macs if override is configured */
1716         if (mvm->dbgfs_bcast_filtering.override) {
1717                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1718                        sizeof(cmd->filters));
1719                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1720                        sizeof(cmd->macs));
1721                 return true;
1722         }
1723 #endif
1724
1725         /* if no filters are configured, do nothing */
1726         if (!mvm->bcast_filters)
1727                 return false;
1728
1729         /* configure and attach these filters for each associated sta vif */
1730         ieee80211_iterate_active_interfaces(
1731                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1732                 iwl_mvm_bcast_filter_iterator, &iter_data);
1733
1734         return true;
1735 }
1736 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1737                                           struct ieee80211_vif *vif)
1738 {
1739         struct iwl_bcast_filter_cmd cmd;
1740
1741         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1742                 return 0;
1743
1744         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1745                 return 0;
1746
1747         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1748                                     sizeof(cmd), &cmd);
1749 }
1750 #else
1751 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1752                                                  struct ieee80211_vif *vif)
1753 {
1754         return 0;
1755 }
1756 #endif
1757
1758 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1759                                              struct ieee80211_vif *vif,
1760                                              struct ieee80211_bss_conf *bss_conf,
1761                                              u32 changes)
1762 {
1763         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1764         int ret;
1765
1766         /*
1767          * Re-calculate the tsf id, as the master-slave relations depend on the
1768          * beacon interval, which was not known when the station interface was
1769          * added.
1770          */
1771         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1772                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1773
1774         /*
1775          * If we're not associated yet, take the (new) BSSID before associating
1776          * so the firmware knows. If we're already associated, then use the old
1777          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1778          * branch for disassociation below.
1779          */
1780         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1781                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1782
1783         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1784         if (ret)
1785                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1786
1787         /* after sending it once, adopt mac80211 data */
1788         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1789         mvmvif->associated = bss_conf->assoc;
1790
1791         if (changes & BSS_CHANGED_ASSOC) {
1792                 if (bss_conf->assoc) {
1793                         /* clear statistics to get clean beacon counter */
1794                         iwl_mvm_request_statistics(mvm, true);
1795                         memset(&mvmvif->beacon_stats, 0,
1796                                sizeof(mvmvif->beacon_stats));
1797
1798                         /* add quota for this interface */
1799                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1800                         if (ret) {
1801                                 IWL_ERR(mvm, "failed to update quotas\n");
1802                                 return;
1803                         }
1804
1805                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1806                                      &mvm->status)) {
1807                                 /*
1808                                  * If we're restarting then the firmware will
1809                                  * obviously have lost synchronisation with
1810                                  * the AP. It will attempt to synchronise by
1811                                  * itself, but we can make it more reliable by
1812                                  * scheduling a session protection time event.
1813                                  *
1814                                  * The firmware needs to receive a beacon to
1815                                  * catch up with synchronisation, use 110% of
1816                                  * the beacon interval.
1817                                  *
1818                                  * Set a large maximum delay to allow for more
1819                                  * than a single interface.
1820                                  */
1821                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1822                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1823                                                         5 * dur, false);
1824                         }
1825
1826                         iwl_mvm_sf_update(mvm, vif, false);
1827                         iwl_mvm_power_vif_assoc(mvm, vif);
1828                         if (vif->p2p) {
1829                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1830                                 iwl_mvm_update_smps(mvm, vif,
1831                                                     IWL_MVM_SMPS_REQ_PROT,
1832                                                     IEEE80211_SMPS_DYNAMIC);
1833                         }
1834                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1835                         /*
1836                          * If update fails - SF might be running in associated
1837                          * mode while disassociated - which is forbidden.
1838                          */
1839                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1840                                   "Failed to update SF upon disassociation\n");
1841
1842                         /* remove AP station now that the MAC is unassoc */
1843                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1844                         if (ret)
1845                                 IWL_ERR(mvm, "failed to remove AP station\n");
1846
1847                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1848                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1849                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1850                         /* remove quota for this interface */
1851                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1852                         if (ret)
1853                                 IWL_ERR(mvm, "failed to update quotas\n");
1854
1855                         if (vif->p2p)
1856                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1857
1858                         /* this will take the cleared BSSID from bss_conf */
1859                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1860                         if (ret)
1861                                 IWL_ERR(mvm,
1862                                         "failed to update MAC %pM (clear after unassoc)\n",
1863                                         vif->addr);
1864                 }
1865
1866                 iwl_mvm_recalc_multicast(mvm);
1867                 iwl_mvm_configure_bcast_filter(mvm, vif);
1868
1869                 /* reset rssi values */
1870                 mvmvif->bf_data.ave_beacon_signal = 0;
1871
1872                 iwl_mvm_bt_coex_vif_change(mvm);
1873                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1874                                     IEEE80211_SMPS_AUTOMATIC);
1875                 if (fw_has_capa(&mvm->fw->ucode_capa,
1876                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1877                         iwl_mvm_config_scan(mvm);
1878         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1879                 /*
1880                  * We received a beacon _after_ association so
1881                  * remove the session protection.
1882                  */
1883                 iwl_mvm_remove_time_event(mvm, mvmvif,
1884                                           &mvmvif->time_event_data);
1885         }
1886
1887         if (changes & BSS_CHANGED_BEACON_INFO) {
1888                 iwl_mvm_sf_update(mvm, vif, false);
1889                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1890         }
1891
1892         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1893                 ret = iwl_mvm_power_update_mac(mvm);
1894                 if (ret)
1895                         IWL_ERR(mvm, "failed to update power mode\n");
1896         }
1897
1898         if (changes & BSS_CHANGED_TXPOWER) {
1899                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1900                                 bss_conf->txpower);
1901                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1902         }
1903
1904         if (changes & BSS_CHANGED_CQM) {
1905                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1906                 /* reset cqm events tracking */
1907                 mvmvif->bf_data.last_cqm_event = 0;
1908                 if (mvmvif->bf_data.bf_enabled) {
1909                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1910                         if (ret)
1911                                 IWL_ERR(mvm,
1912                                         "failed to update CQM thresholds\n");
1913                 }
1914         }
1915
1916         if (changes & BSS_CHANGED_ARP_FILTER) {
1917                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1918                 iwl_mvm_configure_bcast_filter(mvm, vif);
1919         }
1920 }
1921
1922 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1923                                  struct ieee80211_vif *vif)
1924 {
1925         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1926         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1927         int ret;
1928
1929         /*
1930          * iwl_mvm_mac_ctxt_add() might read directly from the device
1931          * (the system time), so make sure it is available.
1932          */
1933         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1934         if (ret)
1935                 return ret;
1936
1937         mutex_lock(&mvm->mutex);
1938
1939         /* Send the beacon template */
1940         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1941         if (ret)
1942                 goto out_unlock;
1943
1944         /*
1945          * Re-calculate the tsf id, as the master-slave relations depend on the
1946          * beacon interval, which was not known when the AP interface was added.
1947          */
1948         if (vif->type == NL80211_IFTYPE_AP)
1949                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1950
1951         mvmvif->ap_assoc_sta_count = 0;
1952
1953         /* Add the mac context */
1954         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1955         if (ret)
1956                 goto out_unlock;
1957
1958         /* Perform the binding */
1959         ret = iwl_mvm_binding_add_vif(mvm, vif);
1960         if (ret)
1961                 goto out_remove;
1962
1963         /* Send the bcast station. At this stage the TBTT and DTIM time events
1964          * are added and applied to the scheduler */
1965         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1966         if (ret)
1967                 goto out_unbind;
1968
1969         /* must be set before quota calculations */
1970         mvmvif->ap_ibss_active = true;
1971
1972         /* power updated needs to be done before quotas */
1973         iwl_mvm_power_update_mac(mvm);
1974
1975         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1976         if (ret)
1977                 goto out_quota_failed;
1978
1979         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1980         if (vif->p2p && mvm->p2p_device_vif)
1981                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1982
1983         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1984
1985         iwl_mvm_bt_coex_vif_change(mvm);
1986
1987         /* we don't support TDLS during DCM */
1988         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1989                 iwl_mvm_teardown_tdls_peers(mvm);
1990
1991         goto out_unlock;
1992
1993 out_quota_failed:
1994         iwl_mvm_power_update_mac(mvm);
1995         mvmvif->ap_ibss_active = false;
1996         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1997 out_unbind:
1998         iwl_mvm_binding_remove_vif(mvm, vif);
1999 out_remove:
2000         iwl_mvm_mac_ctxt_remove(mvm, vif);
2001 out_unlock:
2002         mutex_unlock(&mvm->mutex);
2003         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2004         return ret;
2005 }
2006
2007 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2008                                  struct ieee80211_vif *vif)
2009 {
2010         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2011         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2012
2013         iwl_mvm_prepare_mac_removal(mvm, vif);
2014
2015         mutex_lock(&mvm->mutex);
2016
2017         /* Handle AP stop while in CSA */
2018         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2019                 iwl_mvm_remove_time_event(mvm, mvmvif,
2020                                           &mvmvif->time_event_data);
2021                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2022                 mvmvif->csa_countdown = false;
2023         }
2024
2025         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2026                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2027                 mvm->csa_tx_block_bcn_timeout = 0;
2028         }
2029
2030         mvmvif->ap_ibss_active = false;
2031         mvm->ap_last_beacon_gp2 = 0;
2032
2033         iwl_mvm_bt_coex_vif_change(mvm);
2034
2035         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2036
2037         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2038         if (vif->p2p && mvm->p2p_device_vif)
2039                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2040
2041         iwl_mvm_update_quotas(mvm, false, NULL);
2042         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2043         iwl_mvm_binding_remove_vif(mvm, vif);
2044
2045         iwl_mvm_power_update_mac(mvm);
2046
2047         iwl_mvm_mac_ctxt_remove(mvm, vif);
2048
2049         mutex_unlock(&mvm->mutex);
2050 }
2051
2052 static void
2053 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2054                                  struct ieee80211_vif *vif,
2055                                  struct ieee80211_bss_conf *bss_conf,
2056                                  u32 changes)
2057 {
2058         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2059
2060         /* Changes will be applied when the AP/IBSS is started */
2061         if (!mvmvif->ap_ibss_active)
2062                 return;
2063
2064         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2065                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2066             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2067                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2068
2069         /* Need to send a new beacon template to the FW */
2070         if (changes & BSS_CHANGED_BEACON &&
2071             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2072                 IWL_WARN(mvm, "Failed updating beacon data\n");
2073
2074         if (changes & BSS_CHANGED_TXPOWER) {
2075                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2076                                 bss_conf->txpower);
2077                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2078         }
2079
2080 }
2081
2082 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2083                                      struct ieee80211_vif *vif,
2084                                      struct ieee80211_bss_conf *bss_conf,
2085                                      u32 changes)
2086 {
2087         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2088
2089         /*
2090          * iwl_mvm_bss_info_changed_station() might call
2091          * iwl_mvm_protect_session(), which reads directly from
2092          * the device (the system time), so make sure it is available.
2093          */
2094         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2095                 return;
2096
2097         mutex_lock(&mvm->mutex);
2098
2099         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2100                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2101
2102         switch (vif->type) {
2103         case NL80211_IFTYPE_STATION:
2104                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2105                 break;
2106         case NL80211_IFTYPE_AP:
2107         case NL80211_IFTYPE_ADHOC:
2108                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2109                 break;
2110         default:
2111                 /* shouldn't happen */
2112                 WARN_ON_ONCE(1);
2113         }
2114
2115         mutex_unlock(&mvm->mutex);
2116         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2117 }
2118
2119 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2120                                struct ieee80211_vif *vif,
2121                                struct ieee80211_scan_request *hw_req)
2122 {
2123         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2124         int ret;
2125
2126         if (hw_req->req.n_channels == 0 ||
2127             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2128                 return -EINVAL;
2129
2130         mutex_lock(&mvm->mutex);
2131         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2132         mutex_unlock(&mvm->mutex);
2133
2134         return ret;
2135 }
2136
2137 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2138                                        struct ieee80211_vif *vif)
2139 {
2140         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2141
2142         mutex_lock(&mvm->mutex);
2143
2144         /* Due to a race condition, it's possible that mac80211 asks
2145          * us to stop a hw_scan when it's already stopped.  This can
2146          * happen, for instance, if we stopped the scan ourselves,
2147          * called ieee80211_scan_completed() and the userspace called
2148          * cancel scan scan before ieee80211_scan_work() could run.
2149          * To handle that, simply return if the scan is not running.
2150         */
2151         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2152                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2153
2154         mutex_unlock(&mvm->mutex);
2155 }
2156
2157 static void
2158 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2159                                   struct ieee80211_sta *sta, u16 tids,
2160                                   int num_frames,
2161                                   enum ieee80211_frame_release_type reason,
2162                                   bool more_data)
2163 {
2164         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2165
2166         /* Called when we need to transmit (a) frame(s) from mac80211 */
2167
2168         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2169                                           tids, more_data, false);
2170 }
2171
2172 static void
2173 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2174                                     struct ieee80211_sta *sta, u16 tids,
2175                                     int num_frames,
2176                                     enum ieee80211_frame_release_type reason,
2177                                     bool more_data)
2178 {
2179         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2180
2181         /* Called when we need to transmit (a) frame(s) from agg queue */
2182
2183         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2184                                           tids, more_data, true);
2185 }
2186
2187 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2188                                    struct ieee80211_vif *vif,
2189                                    enum sta_notify_cmd cmd,
2190                                    struct ieee80211_sta *sta)
2191 {
2192         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2193         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2194         unsigned long txqs = 0, tids = 0;
2195         int tid;
2196
2197         spin_lock_bh(&mvmsta->lock);
2198         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2199                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2200
2201                 if (tid_data->state != IWL_AGG_ON &&
2202                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2203                         continue;
2204
2205                 __set_bit(tid_data->txq_id, &txqs);
2206
2207                 if (iwl_mvm_tid_queued(tid_data) == 0)
2208                         continue;
2209
2210                 __set_bit(tid, &tids);
2211         }
2212
2213         switch (cmd) {
2214         case STA_NOTIFY_SLEEP:
2215                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2216                         ieee80211_sta_block_awake(hw, sta, true);
2217
2218                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2219                         ieee80211_sta_set_buffered(sta, tid, true);
2220
2221                 if (txqs)
2222                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2223                 /*
2224                  * The fw updates the STA to be asleep. Tx packets on the Tx
2225                  * queues to this station will not be transmitted. The fw will
2226                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2227                  */
2228                 break;
2229         case STA_NOTIFY_AWAKE:
2230                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2231                         break;
2232
2233                 if (txqs)
2234                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2235                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2236                 break;
2237         default:
2238                 break;
2239         }
2240         spin_unlock_bh(&mvmsta->lock);
2241 }
2242
2243 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2244                                        struct ieee80211_vif *vif,
2245                                        struct ieee80211_sta *sta)
2246 {
2247         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2248         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2249         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2250
2251         /*
2252          * This is called before mac80211 does RCU synchronisation,
2253          * so here we already invalidate our internal RCU-protected
2254          * station pointer. The rest of the code will thus no longer
2255          * be able to find the station this way, and we don't rely
2256          * on further RCU synchronisation after the sta_state()
2257          * callback deleted the station.
2258          */
2259         mutex_lock(&mvm->mutex);
2260         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2261                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2262                                    ERR_PTR(-ENOENT));
2263
2264         if (mvm_sta->vif->type == NL80211_IFTYPE_AP) {
2265                 mvmvif->ap_assoc_sta_count--;
2266                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2267         }
2268
2269         mutex_unlock(&mvm->mutex);
2270 }
2271
2272 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2273                                 const u8 *bssid)
2274 {
2275         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2276                 return;
2277
2278         if (iwlwifi_mod_params.uapsd_disable) {
2279                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2280                 return;
2281         }
2282
2283         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2284 }
2285
2286 static void
2287 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2288                            struct ieee80211_vif *vif, u8 *peer_addr,
2289                            enum nl80211_tdls_operation action)
2290 {
2291         struct iwl_fw_dbg_trigger_tlv *trig;
2292         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2293
2294         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2295                 return;
2296
2297         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2298         tdls_trig = (void *)trig->data;
2299         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2300                 return;
2301
2302         if (!(tdls_trig->action_bitmap & BIT(action)))
2303                 return;
2304
2305         if (tdls_trig->peer_mode &&
2306             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2307                 return;
2308
2309         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2310                                     "TDLS event occurred, peer %pM, action %d",
2311                                     peer_addr, action);
2312 }
2313
2314 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2315                                  struct ieee80211_vif *vif,
2316                                  struct ieee80211_sta *sta,
2317                                  enum ieee80211_sta_state old_state,
2318                                  enum ieee80211_sta_state new_state)
2319 {
2320         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2321         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2322         int ret;
2323
2324         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2325                            sta->addr, old_state, new_state);
2326
2327         /* this would be a mac80211 bug ... but don't crash */
2328         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2329                 return -EINVAL;
2330
2331         /* if a STA is being removed, reuse its ID */
2332         flush_work(&mvm->sta_drained_wk);
2333
2334         mutex_lock(&mvm->mutex);
2335         if (old_state == IEEE80211_STA_NOTEXIST &&
2336             new_state == IEEE80211_STA_NONE) {
2337                 /*
2338                  * Firmware bug - it'll crash if the beacon interval is less
2339                  * than 16. We can't avoid connecting at all, so refuse the
2340                  * station state change, this will cause mac80211 to abandon
2341                  * attempts to connect to this AP, and eventually wpa_s will
2342                  * blacklist the AP...
2343                  */
2344                 if (vif->type == NL80211_IFTYPE_STATION &&
2345                     vif->bss_conf.beacon_int < 16) {
2346                         IWL_ERR(mvm,
2347                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2348                                 sta->addr, vif->bss_conf.beacon_int);
2349                         ret = -EINVAL;
2350                         goto out_unlock;
2351                 }
2352
2353                 if (sta->tdls &&
2354                     (vif->p2p ||
2355                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2356                                                 IWL_MVM_TDLS_STA_COUNT ||
2357                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2358                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2359                         ret = -EBUSY;
2360                         goto out_unlock;
2361                 }
2362
2363                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2364                 if (sta->tdls && ret == 0) {
2365                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2366                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2367                                                    NL80211_TDLS_SETUP);
2368                 }
2369         } else if (old_state == IEEE80211_STA_NONE &&
2370                    new_state == IEEE80211_STA_AUTH) {
2371                 /*
2372                  * EBS may be disabled due to previous failures reported by FW.
2373                  * Reset EBS status here assuming environment has been changed.
2374                  */
2375                 mvm->last_ebs_successful = true;
2376                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2377                 ret = 0;
2378         } else if (old_state == IEEE80211_STA_AUTH &&
2379                    new_state == IEEE80211_STA_ASSOC) {
2380                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2381                 if (ret == 0)
2382                         iwl_mvm_rs_rate_init(mvm, sta,
2383                                              mvmvif->phy_ctxt->channel->band,
2384                                              true);
2385         } else if (old_state == IEEE80211_STA_ASSOC &&
2386                    new_state == IEEE80211_STA_AUTHORIZED) {
2387
2388                 /* we don't support TDLS during DCM */
2389                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2390                         iwl_mvm_teardown_tdls_peers(mvm);
2391
2392                 if (sta->tdls)
2393                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2394                                                    NL80211_TDLS_ENABLE_LINK);
2395
2396                 /* enable beacon filtering */
2397                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2398                 ret = 0;
2399         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2400                    new_state == IEEE80211_STA_ASSOC) {
2401                 /* disable beacon filtering */
2402                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2403                 ret = 0;
2404         } else if (old_state == IEEE80211_STA_ASSOC &&
2405                    new_state == IEEE80211_STA_AUTH) {
2406                 ret = 0;
2407         } else if (old_state == IEEE80211_STA_AUTH &&
2408                    new_state == IEEE80211_STA_NONE) {
2409                 ret = 0;
2410         } else if (old_state == IEEE80211_STA_NONE &&
2411                    new_state == IEEE80211_STA_NOTEXIST) {
2412                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2413                 if (sta->tdls) {
2414                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2415                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2416                                                    NL80211_TDLS_DISABLE_LINK);
2417                 }
2418         } else {
2419                 ret = -EIO;
2420         }
2421  out_unlock:
2422         mutex_unlock(&mvm->mutex);
2423
2424         if (sta->tdls && ret == 0) {
2425                 if (old_state == IEEE80211_STA_NOTEXIST &&
2426                     new_state == IEEE80211_STA_NONE)
2427                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2428                 else if (old_state == IEEE80211_STA_NONE &&
2429                          new_state == IEEE80211_STA_NOTEXIST)
2430                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2431         }
2432
2433         return ret;
2434 }
2435
2436 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2437 {
2438         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2439
2440         mvm->rts_threshold = value;
2441
2442         return 0;
2443 }
2444
2445 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2446                                   struct ieee80211_vif *vif,
2447                                   struct ieee80211_sta *sta, u32 changed)
2448 {
2449         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2450
2451         if (vif->type == NL80211_IFTYPE_STATION &&
2452             changed & IEEE80211_RC_NSS_CHANGED)
2453                 iwl_mvm_sf_update(mvm, vif, false);
2454 }
2455
2456 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2457                                struct ieee80211_vif *vif, u16 ac,
2458                                const struct ieee80211_tx_queue_params *params)
2459 {
2460         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2461         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2462
2463         mvmvif->queue_params[ac] = *params;
2464
2465         /*
2466          * No need to update right away, we'll get BSS_CHANGED_QOS
2467          * The exception is P2P_DEVICE interface which needs immediate update.
2468          */
2469         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2470                 int ret;
2471
2472                 mutex_lock(&mvm->mutex);
2473                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2474                 mutex_unlock(&mvm->mutex);
2475                 return ret;
2476         }
2477         return 0;
2478 }
2479
2480 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2481                                       struct ieee80211_vif *vif)
2482 {
2483         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2484         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2485                            200 + vif->bss_conf.beacon_int);
2486         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2487                                100 + vif->bss_conf.beacon_int);
2488
2489         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2490                 return;
2491
2492         /*
2493          * iwl_mvm_protect_session() reads directly from the device
2494          * (the system time), so make sure it is available.
2495          */
2496         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2497                 return;
2498
2499         mutex_lock(&mvm->mutex);
2500         /* Try really hard to protect the session and hear a beacon */
2501         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2502         mutex_unlock(&mvm->mutex);
2503
2504         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2505 }
2506
2507 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2508                                         struct ieee80211_vif *vif,
2509                                         struct cfg80211_sched_scan_request *req,
2510                                         struct ieee80211_scan_ies *ies)
2511 {
2512         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2513
2514         int ret;
2515
2516         mutex_lock(&mvm->mutex);
2517
2518         if (!vif->bss_conf.idle) {
2519                 ret = -EBUSY;
2520                 goto out;
2521         }
2522
2523         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2524
2525 out:
2526         mutex_unlock(&mvm->mutex);
2527         return ret;
2528 }
2529
2530 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2531                                        struct ieee80211_vif *vif)
2532 {
2533         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2534         int ret;
2535
2536         mutex_lock(&mvm->mutex);
2537
2538         /* Due to a race condition, it's possible that mac80211 asks
2539          * us to stop a sched_scan when it's already stopped.  This
2540          * can happen, for instance, if we stopped the scan ourselves,
2541          * called ieee80211_sched_scan_stopped() and the userspace called
2542          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2543          * could run.  To handle this, simply return if the scan is
2544          * not running.
2545         */
2546         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2547                 mutex_unlock(&mvm->mutex);
2548                 return 0;
2549         }
2550
2551         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2552         mutex_unlock(&mvm->mutex);
2553         iwl_mvm_wait_for_async_handlers(mvm);
2554
2555         return ret;
2556 }
2557
2558 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2559                                enum set_key_cmd cmd,
2560                                struct ieee80211_vif *vif,
2561                                struct ieee80211_sta *sta,
2562                                struct ieee80211_key_conf *key)
2563 {
2564         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2565         int ret;
2566         u8 key_offset;
2567
2568         if (iwlwifi_mod_params.sw_crypto) {
2569                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2570                 return -EOPNOTSUPP;
2571         }
2572
2573         switch (key->cipher) {
2574         case WLAN_CIPHER_SUITE_TKIP:
2575                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2576                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2577                 break;
2578         case WLAN_CIPHER_SUITE_CCMP:
2579                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2580                 break;
2581         case WLAN_CIPHER_SUITE_AES_CMAC:
2582                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2583                 break;
2584         case WLAN_CIPHER_SUITE_WEP40:
2585         case WLAN_CIPHER_SUITE_WEP104:
2586                 /* For non-client mode, only use WEP keys for TX as we probably
2587                  * don't have a station yet anyway and would then have to keep
2588                  * track of the keys, linking them to each of the clients/peers
2589                  * as they appear. For now, don't do that, for performance WEP
2590                  * offload doesn't really matter much, but we need it for some
2591                  * other offload features in client mode.
2592                  */
2593                 if (vif->type != NL80211_IFTYPE_STATION)
2594                         return 0;
2595                 break;
2596         default:
2597                 /* currently FW supports only one optional cipher scheme */
2598                 if (hw->n_cipher_schemes &&
2599                     hw->cipher_schemes->cipher == key->cipher)
2600                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2601                 else
2602                         return -EOPNOTSUPP;
2603         }
2604
2605         mutex_lock(&mvm->mutex);
2606
2607         switch (cmd) {
2608         case SET_KEY:
2609                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2610                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2611                         /*
2612                          * GTK on AP interface is a TX-only key, return 0;
2613                          * on IBSS they're per-station and because we're lazy
2614                          * we don't support them for RX, so do the same.
2615                          */
2616                         ret = 0;
2617                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2618                         break;
2619                 }
2620
2621                 /* During FW restart, in order to restore the state as it was,
2622                  * don't try to reprogram keys we previously failed for.
2623                  */
2624                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2625                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2626                         IWL_DEBUG_MAC80211(mvm,
2627                                            "skip invalid idx key programming during restart\n");
2628                         ret = 0;
2629                         break;
2630                 }
2631
2632                 /* in HW restart reuse the index, otherwise request a new one */
2633                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2634                         key_offset = key->hw_key_idx;
2635                 else
2636                         key_offset = STA_KEY_IDX_INVALID;
2637
2638                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2639                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2640                 if (ret) {
2641                         IWL_WARN(mvm, "set key failed\n");
2642                         /*
2643                          * can't add key for RX, but we don't need it
2644                          * in the device for TX so still return 0
2645                          */
2646                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2647                         ret = 0;
2648                 }
2649
2650                 break;
2651         case DISABLE_KEY:
2652                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2653                         ret = 0;
2654                         break;
2655                 }
2656
2657                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2658                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2659                 break;
2660         default:
2661                 ret = -EINVAL;
2662         }
2663
2664         mutex_unlock(&mvm->mutex);
2665         return ret;
2666 }
2667
2668 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2669                                         struct ieee80211_vif *vif,
2670                                         struct ieee80211_key_conf *keyconf,
2671                                         struct ieee80211_sta *sta,
2672                                         u32 iv32, u16 *phase1key)
2673 {
2674         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2675
2676         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2677                 return;
2678
2679         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2680 }
2681
2682
2683 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2684                                struct iwl_rx_packet *pkt, void *data)
2685 {
2686         struct iwl_mvm *mvm =
2687                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2688         struct iwl_hs20_roc_res *resp;
2689         int resp_len = iwl_rx_packet_payload_len(pkt);
2690         struct iwl_mvm_time_event_data *te_data = data;
2691
2692         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2693                 return true;
2694
2695         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2696                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2697                 return true;
2698         }
2699
2700         resp = (void *)pkt->data;
2701
2702         IWL_DEBUG_TE(mvm,
2703                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2704                      resp->status, resp->event_unique_id);
2705
2706         te_data->uid = le32_to_cpu(resp->event_unique_id);
2707         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2708                      te_data->uid);
2709
2710         spin_lock_bh(&mvm->time_event_lock);
2711         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2712         spin_unlock_bh(&mvm->time_event_lock);
2713
2714         return true;
2715 }
2716
2717 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2718 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2719 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2720 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2721 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2722 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2723                                     struct ieee80211_channel *channel,
2724                                     struct ieee80211_vif *vif,
2725                                     int duration)
2726 {
2727         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2728         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2729         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2730         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2731         struct iwl_notification_wait wait_time_event;
2732         u32 dtim_interval = vif->bss_conf.dtim_period *
2733                 vif->bss_conf.beacon_int;
2734         u32 req_dur, delay;
2735         struct iwl_hs20_roc_req aux_roc_req = {
2736                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2737                 .id_and_color =
2738                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2739                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2740                 /* Set the channel info data */
2741                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2742                         PHY_BAND_24 : PHY_BAND_5,
2743                 .channel_info.channel = channel->hw_value,
2744                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2745                 /* Set the time and duration */
2746                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2747          };
2748
2749         delay = AUX_ROC_MIN_DELAY;
2750         req_dur = MSEC_TO_TU(duration);
2751
2752         /*
2753          * If we are associated we want the delay time to be at least one
2754          * dtim interval so that the FW can wait until after the DTIM and
2755          * then start the time event, this will potentially allow us to
2756          * remain off-channel for the max duration.
2757          * Since we want to use almost a whole dtim interval we would also
2758          * like the delay to be for 2-3 dtim intervals, in case there are
2759          * other time events with higher priority.
2760          */
2761         if (vif->bss_conf.assoc) {
2762                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2763                 /* We cannot remain off-channel longer than the DTIM interval */
2764                 if (dtim_interval <= req_dur) {
2765                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2766                         if (req_dur <= AUX_ROC_MIN_DURATION)
2767                                 req_dur = dtim_interval -
2768                                         AUX_ROC_MIN_SAFETY_BUFFER;
2769                 }
2770         }
2771
2772         aux_roc_req.duration = cpu_to_le32(req_dur);
2773         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2774
2775         IWL_DEBUG_TE(mvm,
2776                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2777                      channel->hw_value, req_dur, duration, delay,
2778                      dtim_interval);
2779         /* Set the node address */
2780         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2781
2782         lockdep_assert_held(&mvm->mutex);
2783
2784         spin_lock_bh(&mvm->time_event_lock);
2785
2786         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2787                 spin_unlock_bh(&mvm->time_event_lock);
2788                 return -EIO;
2789         }
2790
2791         te_data->vif = vif;
2792         te_data->duration = duration;
2793         te_data->id = HOT_SPOT_CMD;
2794
2795         spin_unlock_bh(&mvm->time_event_lock);
2796
2797         /*
2798          * Use a notification wait, which really just processes the
2799          * command response and doesn't wait for anything, in order
2800          * to be able to process the response and get the UID inside
2801          * the RX path. Using CMD_WANT_SKB doesn't work because it
2802          * stores the buffer and then wakes up this thread, by which
2803          * time another notification (that the time event started)
2804          * might already be processed unsuccessfully.
2805          */
2806         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2807                                    time_event_response,
2808                                    ARRAY_SIZE(time_event_response),
2809                                    iwl_mvm_rx_aux_roc, te_data);
2810
2811         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2812                                    &aux_roc_req);
2813
2814         if (res) {
2815                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2816                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2817                 goto out_clear_te;
2818         }
2819
2820         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2821         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2822         /* should never fail */
2823         WARN_ON_ONCE(res);
2824
2825         if (res) {
2826  out_clear_te:
2827                 spin_lock_bh(&mvm->time_event_lock);
2828                 iwl_mvm_te_clear_data(mvm, te_data);
2829                 spin_unlock_bh(&mvm->time_event_lock);
2830         }
2831
2832         return res;
2833 }
2834
2835 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2836                        struct ieee80211_vif *vif,
2837                        struct ieee80211_channel *channel,
2838                        int duration,
2839                        enum ieee80211_roc_type type)
2840 {
2841         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2842         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2843         struct cfg80211_chan_def chandef;
2844         struct iwl_mvm_phy_ctxt *phy_ctxt;
2845         int ret, i;
2846
2847         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2848                            duration, type);
2849
2850         flush_work(&mvm->roc_done_wk);
2851
2852         mutex_lock(&mvm->mutex);
2853
2854         switch (vif->type) {
2855         case NL80211_IFTYPE_STATION:
2856                 if (fw_has_capa(&mvm->fw->ucode_capa,
2857                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2858                         /* Use aux roc framework (HS20) */
2859                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2860                                                        vif, duration);
2861                         goto out_unlock;
2862                 }
2863                 IWL_ERR(mvm, "hotspot not supported\n");
2864                 ret = -EINVAL;
2865                 goto out_unlock;
2866         case NL80211_IFTYPE_P2P_DEVICE:
2867                 /* handle below */
2868                 break;
2869         default:
2870                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2871                 ret = -EINVAL;
2872                 goto out_unlock;
2873         }
2874
2875         for (i = 0; i < NUM_PHY_CTX; i++) {
2876                 phy_ctxt = &mvm->phy_ctxts[i];
2877                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2878                         continue;
2879
2880                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2881                         /*
2882                          * Unbind the P2P_DEVICE from the current PHY context,
2883                          * and if the PHY context is not used remove it.
2884                          */
2885                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2886                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2887                                 goto out_unlock;
2888
2889                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2890
2891                         /* Bind the P2P_DEVICE to the current PHY Context */
2892                         mvmvif->phy_ctxt = phy_ctxt;
2893
2894                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2895                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2896                                 goto out_unlock;
2897
2898                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2899                         goto schedule_time_event;
2900                 }
2901         }
2902
2903         /* Need to update the PHY context only if the ROC channel changed */
2904         if (channel == mvmvif->phy_ctxt->channel)
2905                 goto schedule_time_event;
2906
2907         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2908
2909         /*
2910          * Change the PHY context configuration as it is currently referenced
2911          * only by the P2P Device MAC
2912          */
2913         if (mvmvif->phy_ctxt->ref == 1) {
2914                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2915                                                &chandef, 1, 1);
2916                 if (ret)
2917                         goto out_unlock;
2918         } else {
2919                 /*
2920                  * The PHY context is shared with other MACs. Need to remove the
2921                  * P2P Device from the binding, allocate an new PHY context and
2922                  * create a new binding
2923                  */
2924                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2925                 if (!phy_ctxt) {
2926                         ret = -ENOSPC;
2927                         goto out_unlock;
2928                 }
2929
2930                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2931                                                1, 1);
2932                 if (ret) {
2933                         IWL_ERR(mvm, "Failed to change PHY context\n");
2934                         goto out_unlock;
2935                 }
2936
2937                 /* Unbind the P2P_DEVICE from the current PHY context */
2938                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2939                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2940                         goto out_unlock;
2941
2942                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2943
2944                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2945                 mvmvif->phy_ctxt = phy_ctxt;
2946
2947                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2948                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2949                         goto out_unlock;
2950
2951                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2952         }
2953
2954 schedule_time_event:
2955         /* Schedule the time events */
2956         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2957
2958 out_unlock:
2959         mutex_unlock(&mvm->mutex);
2960         IWL_DEBUG_MAC80211(mvm, "leave\n");
2961         return ret;
2962 }
2963
2964 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2965 {
2966         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2967
2968         IWL_DEBUG_MAC80211(mvm, "enter\n");
2969
2970         mutex_lock(&mvm->mutex);
2971         iwl_mvm_stop_roc(mvm);
2972         mutex_unlock(&mvm->mutex);
2973
2974         IWL_DEBUG_MAC80211(mvm, "leave\n");
2975         return 0;
2976 }
2977
2978 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2979                                  struct ieee80211_chanctx_conf *ctx)
2980 {
2981         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2982         struct iwl_mvm_phy_ctxt *phy_ctxt;
2983         int ret;
2984
2985         lockdep_assert_held(&mvm->mutex);
2986
2987         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2988
2989         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2990         if (!phy_ctxt) {
2991                 ret = -ENOSPC;
2992                 goto out;
2993         }
2994
2995         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2996                                        ctx->rx_chains_static,
2997                                        ctx->rx_chains_dynamic);
2998         if (ret) {
2999                 IWL_ERR(mvm, "Failed to add PHY context\n");
3000                 goto out;
3001         }
3002
3003         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3004         *phy_ctxt_id = phy_ctxt->id;
3005 out:
3006         return ret;
3007 }
3008
3009 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3010                                struct ieee80211_chanctx_conf *ctx)
3011 {
3012         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3013         int ret;
3014
3015         mutex_lock(&mvm->mutex);
3016         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3017         mutex_unlock(&mvm->mutex);
3018
3019         return ret;
3020 }
3021
3022 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3023                                      struct ieee80211_chanctx_conf *ctx)
3024 {
3025         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3026         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3027
3028         lockdep_assert_held(&mvm->mutex);
3029
3030         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3031 }
3032
3033 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3034                                    struct ieee80211_chanctx_conf *ctx)
3035 {
3036         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3037
3038         mutex_lock(&mvm->mutex);
3039         __iwl_mvm_remove_chanctx(mvm, ctx);
3040         mutex_unlock(&mvm->mutex);
3041 }
3042
3043 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3044                                    struct ieee80211_chanctx_conf *ctx,
3045                                    u32 changed)
3046 {
3047         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3048         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3049         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3050
3051         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3052                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3053                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3054                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3055                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3056                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3057                       phy_ctxt->ref, changed))
3058                 return;
3059
3060         mutex_lock(&mvm->mutex);
3061         iwl_mvm_bt_coex_vif_change(mvm);
3062         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3063                                  ctx->rx_chains_static,
3064                                  ctx->rx_chains_dynamic);
3065         mutex_unlock(&mvm->mutex);
3066 }
3067
3068 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3069                                         struct ieee80211_vif *vif,
3070                                         struct ieee80211_chanctx_conf *ctx,
3071                                         bool switching_chanctx)
3072 {
3073         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3074         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3075         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3076         int ret;
3077
3078         lockdep_assert_held(&mvm->mutex);
3079
3080         mvmvif->phy_ctxt = phy_ctxt;
3081
3082         switch (vif->type) {
3083         case NL80211_IFTYPE_AP:
3084                 /* only needed if we're switching chanctx (i.e. during CSA) */
3085                 if (switching_chanctx) {
3086                         mvmvif->ap_ibss_active = true;
3087                         break;
3088                 }
3089         case NL80211_IFTYPE_ADHOC:
3090                 /*
3091                  * The AP binding flow is handled as part of the start_ap flow
3092                  * (in bss_info_changed), similarly for IBSS.
3093                  */
3094                 ret = 0;
3095                 goto out;
3096         case NL80211_IFTYPE_STATION:
3097                 break;
3098         case NL80211_IFTYPE_MONITOR:
3099                 /* always disable PS when a monitor interface is active */
3100                 mvmvif->ps_disabled = true;
3101                 break;
3102         default:
3103                 ret = -EINVAL;
3104                 goto out;
3105         }
3106
3107         ret = iwl_mvm_binding_add_vif(mvm, vif);
3108         if (ret)
3109                 goto out;
3110
3111         /*
3112          * Power state must be updated before quotas,
3113          * otherwise fw will complain.
3114          */
3115         iwl_mvm_power_update_mac(mvm);
3116
3117         /* Setting the quota at this stage is only required for monitor
3118          * interfaces. For the other types, the bss_info changed flow
3119          * will handle quota settings.
3120          */
3121         if (vif->type == NL80211_IFTYPE_MONITOR) {
3122                 mvmvif->monitor_active = true;
3123                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3124                 if (ret)
3125                         goto out_remove_binding;
3126         }
3127
3128         /* Handle binding during CSA */
3129         if (vif->type == NL80211_IFTYPE_AP) {
3130                 iwl_mvm_update_quotas(mvm, false, NULL);
3131                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3132         }
3133
3134         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3135                 u32 duration = 2 * vif->bss_conf.beacon_int;
3136
3137                 /* iwl_mvm_protect_session() reads directly from the
3138                  * device (the system time), so make sure it is
3139                  * available.
3140                  */
3141                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3142                 if (ret)
3143                         goto out_remove_binding;
3144
3145                 /* Protect the session to make sure we hear the first
3146                  * beacon on the new channel.
3147                  */
3148                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3149                                         vif->bss_conf.beacon_int / 2,
3150                                         true);
3151
3152                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3153
3154                 iwl_mvm_update_quotas(mvm, false, NULL);
3155         }
3156
3157         goto out;
3158
3159 out_remove_binding:
3160         iwl_mvm_binding_remove_vif(mvm, vif);
3161         iwl_mvm_power_update_mac(mvm);
3162 out:
3163         if (ret)
3164                 mvmvif->phy_ctxt = NULL;
3165         return ret;
3166 }
3167 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3168                                       struct ieee80211_vif *vif,
3169                                       struct ieee80211_chanctx_conf *ctx)
3170 {
3171         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3172         int ret;
3173
3174         mutex_lock(&mvm->mutex);
3175         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3176         mutex_unlock(&mvm->mutex);
3177
3178         return ret;
3179 }
3180
3181 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3182                                            struct ieee80211_vif *vif,
3183                                            struct ieee80211_chanctx_conf *ctx,
3184                                            bool switching_chanctx)
3185 {
3186         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3187         struct ieee80211_vif *disabled_vif = NULL;
3188
3189         lockdep_assert_held(&mvm->mutex);
3190
3191         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3192
3193         switch (vif->type) {
3194         case NL80211_IFTYPE_ADHOC:
3195                 goto out;
3196         case NL80211_IFTYPE_MONITOR:
3197                 mvmvif->monitor_active = false;
3198                 mvmvif->ps_disabled = false;
3199                 break;
3200         case NL80211_IFTYPE_AP:
3201                 /* This part is triggered only during CSA */
3202                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3203                         goto out;
3204
3205                 mvmvif->csa_countdown = false;
3206
3207                 /* Set CS bit on all the stations */
3208                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3209
3210                 /* Save blocked iface, the timeout is set on the next beacon */
3211                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3212
3213                 mvmvif->ap_ibss_active = false;
3214                 break;
3215         case NL80211_IFTYPE_STATION:
3216                 if (!switching_chanctx)
3217                         break;
3218
3219                 disabled_vif = vif;
3220
3221                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3222                 break;
3223         default:
3224                 break;
3225         }
3226
3227         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3228         iwl_mvm_binding_remove_vif(mvm, vif);
3229
3230 out:
3231         mvmvif->phy_ctxt = NULL;
3232         iwl_mvm_power_update_mac(mvm);
3233 }
3234
3235 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3236                                          struct ieee80211_vif *vif,
3237                                          struct ieee80211_chanctx_conf *ctx)
3238 {
3239         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3240
3241         mutex_lock(&mvm->mutex);
3242         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3243         mutex_unlock(&mvm->mutex);
3244 }
3245
3246 static int
3247 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3248                                 struct ieee80211_vif_chanctx_switch *vifs)
3249 {
3250         int ret;
3251
3252         mutex_lock(&mvm->mutex);
3253         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3254         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3255
3256         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3257         if (ret) {
3258                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3259                 goto out_reassign;
3260         }
3261
3262         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3263                                            true);
3264         if (ret) {
3265                 IWL_ERR(mvm,
3266                         "failed to assign new_ctx during channel switch\n");
3267                 goto out_remove;
3268         }
3269
3270         /* we don't support TDLS during DCM - can be caused by channel switch */
3271         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3272                 iwl_mvm_teardown_tdls_peers(mvm);
3273
3274         goto out;
3275
3276 out_remove:
3277         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3278
3279 out_reassign:
3280         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3281                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3282                 goto out_restart;
3283         }
3284
3285         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3286                                          true)) {
3287                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3288                 goto out_restart;
3289         }
3290
3291         goto out;
3292
3293 out_restart:
3294         /* things keep failing, better restart the hw */
3295         iwl_mvm_nic_restart(mvm, false);
3296
3297 out:
3298         mutex_unlock(&mvm->mutex);
3299
3300         return ret;
3301 }
3302
3303 static int
3304 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3305                                     struct ieee80211_vif_chanctx_switch *vifs)
3306 {
3307         int ret;
3308
3309         mutex_lock(&mvm->mutex);
3310         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3311
3312         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3313                                            true);
3314         if (ret) {
3315                 IWL_ERR(mvm,
3316                         "failed to assign new_ctx during channel switch\n");
3317                 goto out_reassign;
3318         }
3319
3320         goto out;
3321
3322 out_reassign:
3323         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3324                                          true)) {
3325                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3326                 goto out_restart;
3327         }
3328
3329         goto out;
3330
3331 out_restart:
3332         /* things keep failing, better restart the hw */
3333         iwl_mvm_nic_restart(mvm, false);
3334
3335 out:
3336         mutex_unlock(&mvm->mutex);
3337
3338         return ret;
3339 }
3340
3341 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3342                                       struct ieee80211_vif_chanctx_switch *vifs,
3343                                       int n_vifs,
3344                                       enum ieee80211_chanctx_switch_mode mode)
3345 {
3346         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3347         int ret;
3348
3349         /* we only support a single-vif right now */
3350         if (n_vifs > 1)
3351                 return -EOPNOTSUPP;
3352
3353         switch (mode) {
3354         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3355                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3356                 break;
3357         case CHANCTX_SWMODE_REASSIGN_VIF:
3358                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3359                 break;
3360         default:
3361                 ret = -EOPNOTSUPP;
3362                 break;
3363         }
3364
3365         return ret;
3366 }
3367
3368 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3369                            struct ieee80211_sta *sta,
3370                            bool set)
3371 {
3372         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3373         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3374
3375         if (!mvm_sta || !mvm_sta->vif) {
3376                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3377                 return -EINVAL;
3378         }
3379
3380         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3381 }
3382
3383 #ifdef CONFIG_NL80211_TESTMODE
3384 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3385         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3386         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3387         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3388 };
3389
3390 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3391                                       struct ieee80211_vif *vif,
3392                                       void *data, int len)
3393 {
3394         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3395         int err;
3396         u32 noa_duration;
3397
3398         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3399         if (err)
3400                 return err;
3401
3402         if (!tb[IWL_MVM_TM_ATTR_CMD])
3403                 return -EINVAL;
3404
3405         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3406         case IWL_MVM_TM_CMD_SET_NOA:
3407                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3408                     !vif->bss_conf.enable_beacon ||
3409                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3410                         return -EINVAL;
3411
3412                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3413                 if (noa_duration >= vif->bss_conf.beacon_int)
3414                         return -EINVAL;
3415
3416                 mvm->noa_duration = noa_duration;
3417                 mvm->noa_vif = vif;
3418
3419                 return iwl_mvm_update_quotas(mvm, false, NULL);
3420         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3421                 /* must be associated client vif - ignore authorized */
3422                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3423                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3424                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3425                         return -EINVAL;
3426
3427                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3428                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3429                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3430         }
3431
3432         return -EOPNOTSUPP;
3433 }
3434
3435 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3436                                     struct ieee80211_vif *vif,
3437                                     void *data, int len)
3438 {
3439         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3440         int err;
3441
3442         mutex_lock(&mvm->mutex);
3443         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3444         mutex_unlock(&mvm->mutex);
3445
3446         return err;
3447 }
3448 #endif
3449
3450 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3451                                    struct ieee80211_vif *vif,
3452                                    struct ieee80211_channel_switch *chsw)
3453 {
3454         /* By implementing this operation, we prevent mac80211 from
3455          * starting its own channel switch timer, so that we can call
3456          * ieee80211_chswitch_done() ourselves at the right time
3457          * (which is when the absence time event starts).
3458          */
3459
3460         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3461                            "dummy channel switch op\n");
3462 }
3463
3464 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3465                                       struct ieee80211_vif *vif,
3466                                       struct ieee80211_channel_switch *chsw)
3467 {
3468         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3469         struct ieee80211_vif *csa_vif;
3470         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3471         u32 apply_time;
3472         int ret;
3473
3474         mutex_lock(&mvm->mutex);
3475
3476         mvmvif->csa_failed = false;
3477
3478         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3479                            chsw->chandef.center_freq1);
3480
3481         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3482
3483         switch (vif->type) {
3484         case NL80211_IFTYPE_AP:
3485                 csa_vif =
3486                         rcu_dereference_protected(mvm->csa_vif,
3487                                                   lockdep_is_held(&mvm->mutex));
3488                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3489                               "Another CSA is already in progress")) {
3490                         ret = -EBUSY;
3491                         goto out_unlock;
3492                 }
3493
3494                 rcu_assign_pointer(mvm->csa_vif, vif);
3495
3496                 if (WARN_ONCE(mvmvif->csa_countdown,
3497                               "Previous CSA countdown didn't complete")) {
3498                         ret = -EBUSY;
3499                         goto out_unlock;
3500                 }
3501
3502                 break;
3503         case NL80211_IFTYPE_STATION:
3504                 /* Schedule the time event to a bit before beacon 1,
3505                  * to make sure we're in the new channel when the
3506                  * GO/AP arrives.
3507                  */
3508                 apply_time = chsw->device_timestamp +
3509                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3510                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3511
3512                 if (chsw->block_tx)
3513                         iwl_mvm_csa_client_absent(mvm, vif);
3514
3515                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3516                                             apply_time);
3517                 if (mvmvif->bf_data.bf_enabled) {
3518                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3519                         if (ret)
3520                                 goto out_unlock;
3521                 }
3522
3523                 break;
3524         default:
3525                 break;
3526         }
3527
3528         mvmvif->ps_disabled = true;
3529
3530         ret = iwl_mvm_power_update_ps(mvm);
3531         if (ret)
3532                 goto out_unlock;
3533
3534         /* we won't be on this channel any longer */
3535         iwl_mvm_teardown_tdls_peers(mvm);
3536
3537 out_unlock:
3538         mutex_unlock(&mvm->mutex);
3539
3540         return ret;
3541 }
3542
3543 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3544                                        struct ieee80211_vif *vif)
3545 {
3546         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3547         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3548         int ret;
3549
3550         mutex_lock(&mvm->mutex);
3551
3552         if (mvmvif->csa_failed) {
3553                 mvmvif->csa_failed = false;
3554                 ret = -EIO;
3555                 goto out_unlock;
3556         }
3557
3558         if (vif->type == NL80211_IFTYPE_STATION) {
3559                 struct iwl_mvm_sta *mvmsta;
3560
3561                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3562                                                           mvmvif->ap_sta_id);
3563
3564                 if (WARN_ON(!mvmsta)) {
3565                         ret = -EIO;
3566                         goto out_unlock;
3567                 }
3568
3569                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3570
3571                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3572
3573                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3574                 if (ret)
3575                         goto out_unlock;
3576
3577                 iwl_mvm_stop_session_protection(mvm, vif);
3578         }
3579
3580         mvmvif->ps_disabled = false;
3581
3582         ret = iwl_mvm_power_update_ps(mvm);
3583
3584 out_unlock:
3585         mutex_unlock(&mvm->mutex);
3586
3587         return ret;
3588 }
3589
3590 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3591                               struct ieee80211_vif *vif, u32 queues, bool drop)
3592 {
3593         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3594         struct iwl_mvm_vif *mvmvif;
3595         struct iwl_mvm_sta *mvmsta;
3596         struct ieee80211_sta *sta;
3597         int i;
3598         u32 msk = 0;
3599
3600         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3601                 return;
3602
3603         mutex_lock(&mvm->mutex);
3604         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3605
3606         /* flush the AP-station and all TDLS peers */
3607         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3608                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3609                                                 lockdep_is_held(&mvm->mutex));
3610                 if (IS_ERR_OR_NULL(sta))
3611                         continue;
3612
3613                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3614                 if (mvmsta->vif != vif)
3615                         continue;
3616
3617                 /* make sure only TDLS peers or the AP are flushed */
3618                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3619
3620                 msk |= mvmsta->tfd_queue_msk;
3621         }
3622
3623         if (drop) {
3624                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3625                         IWL_ERR(mvm, "flush request fail\n");
3626                 mutex_unlock(&mvm->mutex);
3627         } else {
3628                 mutex_unlock(&mvm->mutex);
3629
3630                 /* this can take a while, and we may need/want other operations
3631                  * to succeed while doing this, so do it without the mutex held
3632                  */
3633                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3634         }
3635 }
3636
3637 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3638                                   struct survey_info *survey)
3639 {
3640         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3641         int ret;
3642
3643         memset(survey, 0, sizeof(*survey));
3644
3645         /* only support global statistics right now */
3646         if (idx != 0)
3647                 return -ENOENT;
3648
3649         if (fw_has_capa(&mvm->fw->ucode_capa,
3650                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3651                 return -ENOENT;
3652
3653         mutex_lock(&mvm->mutex);
3654
3655         if (mvm->ucode_loaded) {
3656                 ret = iwl_mvm_request_statistics(mvm, false);
3657                 if (ret)
3658                         goto out;
3659         }
3660
3661         survey->filled = SURVEY_INFO_TIME |
3662                          SURVEY_INFO_TIME_RX |
3663                          SURVEY_INFO_TIME_TX |
3664                          SURVEY_INFO_TIME_SCAN;
3665         survey->time = mvm->accu_radio_stats.on_time_rf +
3666                        mvm->radio_stats.on_time_rf;
3667         do_div(survey->time, USEC_PER_MSEC);
3668
3669         survey->time_rx = mvm->accu_radio_stats.rx_time +
3670                           mvm->radio_stats.rx_time;
3671         do_div(survey->time_rx, USEC_PER_MSEC);
3672
3673         survey->time_tx = mvm->accu_radio_stats.tx_time +
3674                           mvm->radio_stats.tx_time;
3675         do_div(survey->time_tx, USEC_PER_MSEC);
3676
3677         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3678                             mvm->radio_stats.on_time_scan;
3679         do_div(survey->time_scan, USEC_PER_MSEC);
3680
3681         ret = 0;
3682  out:
3683         mutex_unlock(&mvm->mutex);
3684         return ret;
3685 }
3686
3687 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3688                                        struct ieee80211_vif *vif,
3689                                        struct ieee80211_sta *sta,
3690                                        struct station_info *sinfo)
3691 {
3692         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3693         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3694         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3695
3696         if (fw_has_capa(&mvm->fw->ucode_capa,
3697                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3698                 return;
3699
3700         /* if beacon filtering isn't on mac80211 does it anyway */
3701         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3702                 return;
3703
3704         if (!vif->bss_conf.assoc)
3705                 return;
3706
3707         mutex_lock(&mvm->mutex);
3708
3709         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3710                 goto unlock;
3711
3712         if (iwl_mvm_request_statistics(mvm, false))
3713                 goto unlock;
3714
3715         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3716                            mvmvif->beacon_stats.accu_num_beacons;
3717         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3718         if (mvmvif->beacon_stats.avg_signal) {
3719                 /* firmware only reports a value after RXing a few beacons */
3720                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3721                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3722         }
3723  unlock:
3724         mutex_unlock(&mvm->mutex);
3725 }
3726
3727 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3728                                         struct ieee80211_vif *vif,
3729                                         const struct ieee80211_event *event)
3730 {
3731 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3732         do {                                                    \
3733                 if ((_cnt) && --(_cnt))                         \
3734                         break;                                  \
3735                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3736         } while (0)
3737
3738         struct iwl_fw_dbg_trigger_tlv *trig;
3739         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3740
3741         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3742                 return;
3743
3744         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3745         trig_mlme = (void *)trig->data;
3746         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3747                 return;
3748
3749         if (event->u.mlme.data == ASSOC_EVENT) {
3750                 if (event->u.mlme.status == MLME_DENIED)
3751                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3752                                            trig_mlme->stop_assoc_denied,
3753                                            "DENIED ASSOC: reason %d",
3754                                             event->u.mlme.reason);
3755                 else if (event->u.mlme.status == MLME_TIMEOUT)
3756                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3757                                            trig_mlme->stop_assoc_timeout,
3758                                            "ASSOC TIMEOUT");
3759         } else if (event->u.mlme.data == AUTH_EVENT) {
3760                 if (event->u.mlme.status == MLME_DENIED)
3761                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3762                                            trig_mlme->stop_auth_denied,
3763                                            "DENIED AUTH: reason %d",
3764                                            event->u.mlme.reason);
3765                 else if (event->u.mlme.status == MLME_TIMEOUT)
3766                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3767                                            trig_mlme->stop_auth_timeout,
3768                                            "AUTH TIMEOUT");
3769         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3770                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3771                                    trig_mlme->stop_rx_deauth,
3772                                    "DEAUTH RX %d", event->u.mlme.reason);
3773         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3774                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3775                                    trig_mlme->stop_tx_deauth,
3776                                    "DEAUTH TX %d", event->u.mlme.reason);
3777         }
3778 #undef CHECK_MLME_TRIGGER
3779 }
3780
3781 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3782                                           struct ieee80211_vif *vif,
3783                                           const struct ieee80211_event *event)
3784 {
3785         struct iwl_fw_dbg_trigger_tlv *trig;
3786         struct iwl_fw_dbg_trigger_ba *ba_trig;
3787
3788         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3789                 return;
3790
3791         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3792         ba_trig = (void *)trig->data;
3793         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3794                 return;
3795
3796         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3797                 return;
3798
3799         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3800                                     "BAR received from %pM, tid %d, ssn %d",
3801                                     event->u.ba.sta->addr, event->u.ba.tid,
3802                                     event->u.ba.ssn);
3803 }
3804
3805 static void
3806 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3807                                      struct ieee80211_vif *vif,
3808                                      const struct ieee80211_event *event)
3809 {
3810         struct iwl_fw_dbg_trigger_tlv *trig;
3811         struct iwl_fw_dbg_trigger_ba *ba_trig;
3812
3813         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3814                 return;
3815
3816         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3817         ba_trig = (void *)trig->data;
3818         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3819                 return;
3820
3821         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3822                 return;
3823
3824         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3825                                     "Frame from %pM timed out, tid %d",
3826                                     event->u.ba.sta->addr, event->u.ba.tid);
3827 }
3828
3829 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3830                                        struct ieee80211_vif *vif,
3831                                        const struct ieee80211_event *event)
3832 {
3833         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3834
3835         switch (event->type) {
3836         case MLME_EVENT:
3837                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3838                 break;
3839         case BAR_RX_EVENT:
3840                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3841                 break;
3842         case BA_FRAME_TIMEOUT:
3843                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3844                 break;
3845         default:
3846                 break;
3847         }
3848 }
3849
3850 const struct ieee80211_ops iwl_mvm_hw_ops = {
3851         .tx = iwl_mvm_mac_tx,
3852         .ampdu_action = iwl_mvm_mac_ampdu_action,
3853         .start = iwl_mvm_mac_start,
3854         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3855         .stop = iwl_mvm_mac_stop,
3856         .add_interface = iwl_mvm_mac_add_interface,
3857         .remove_interface = iwl_mvm_mac_remove_interface,
3858         .config = iwl_mvm_mac_config,
3859         .prepare_multicast = iwl_mvm_prepare_multicast,
3860         .configure_filter = iwl_mvm_configure_filter,
3861         .config_iface_filter = iwl_mvm_config_iface_filter,
3862         .bss_info_changed = iwl_mvm_bss_info_changed,
3863         .hw_scan = iwl_mvm_mac_hw_scan,
3864         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3865         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3866         .sta_state = iwl_mvm_mac_sta_state,
3867         .sta_notify = iwl_mvm_mac_sta_notify,
3868         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3869         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3870         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3871         .sta_rc_update = iwl_mvm_sta_rc_update,
3872         .conf_tx = iwl_mvm_mac_conf_tx,
3873         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3874         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3875         .flush = iwl_mvm_mac_flush,
3876         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3877         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3878         .set_key = iwl_mvm_mac_set_key,
3879         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3880         .remain_on_channel = iwl_mvm_roc,
3881         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3882         .add_chanctx = iwl_mvm_add_chanctx,
3883         .remove_chanctx = iwl_mvm_remove_chanctx,
3884         .change_chanctx = iwl_mvm_change_chanctx,
3885         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3886         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3887         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3888
3889         .start_ap = iwl_mvm_start_ap_ibss,
3890         .stop_ap = iwl_mvm_stop_ap_ibss,
3891         .join_ibss = iwl_mvm_start_ap_ibss,
3892         .leave_ibss = iwl_mvm_stop_ap_ibss,
3893
3894         .set_tim = iwl_mvm_set_tim,
3895
3896         .channel_switch = iwl_mvm_channel_switch,
3897         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3898         .post_channel_switch = iwl_mvm_post_channel_switch,
3899
3900         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3901         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3902         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3903
3904         .event_callback = iwl_mvm_mac_event_callback,
3905
3906         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3907
3908 #ifdef CONFIG_PM_SLEEP
3909         /* look at d3.c */
3910         .suspend = iwl_mvm_suspend,
3911         .resume = iwl_mvm_resume,
3912         .set_wakeup = iwl_mvm_set_wakeup,
3913         .set_rekey_data = iwl_mvm_set_rekey_data,
3914 #if IS_ENABLED(CONFIG_IPV6)
3915         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3916 #endif
3917         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3918 #endif
3919         .get_survey = iwl_mvm_mac_get_survey,
3920         .sta_statistics = iwl_mvm_mac_sta_statistics,
3921 };