drivers/net/wireless/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
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
  24  *
  25  * The full GNU General Public License is included in this distribution
  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  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.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  *
  42  *  * Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  *  * Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
  48  *  * Neither the name Intel Corporation nor the names of its
  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
  58  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  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 <net/mac80211.h>
  74 #include <net/ieee80211_radiotap.h>
  75 #include <net/tcp.h>
  76
  77 #include "iwl-op-mode.h"
  78 #include "iwl-io.h"
  79 #include "mvm.h"
  80 #include "sta.h"
  81 #include "time-event.h"
  82 #include "iwl-eeprom-parse.h"
  83 #include "fw-api-scan.h"
  84 #include "iwl-phy-db.h"
  85 #include "testmode.h"
  86 #include "iwl-fw-error-dump.h"
  87 #include "iwl-prph.h"
  88
  89 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  90         {
  91                 .max = 1,
  92                 .types = BIT(NL80211_IFTYPE_STATION),
  93         },
  94         {
  95                 .max = 1,
  96                 .types = BIT(NL80211_IFTYPE_AP) |
  97                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  98                         BIT(NL80211_IFTYPE_P2P_GO),
  99         },
 100         {
 101                 .max = 1,
 102                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 103         },
 104 };
 105
 106 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 107         {
 108                 .num_different_channels = 1,
 109                 .max_interfaces = 3,
 110                 .limits = iwl_mvm_limits,
 111                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 112         },
 113 };
 114
 115 #ifdef CONFIG_PM_SLEEP
 116 static const struct nl80211_wowlan_tcp_data_token_feature
 117 iwl_mvm_wowlan_tcp_token_feature = {
 118         .min_len = 0,
 119         .max_len = 255,
 120         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 121 };
 122
 123 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 124         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 125         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 126                             sizeof(struct ethhdr) -
 127                             sizeof(struct iphdr) -
 128                             sizeof(struct tcphdr),
 129         .data_interval_max = 65535, /* __le16 in API */
 130         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 131                             sizeof(struct ethhdr) -
 132                             sizeof(struct iphdr) -
 133                             sizeof(struct tcphdr),
 134         .seq = true,
 135 };
 136 #endif
 137
 138 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 139 /*
 140  * Use the reserved field to indicate magic values.
 141  * these values will only be used internally by the driver,
 142  * and won't make it to the fw (reserved will be 0).
 143  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 144  *      be the vif's ip address. in case there is not a single
 145  *      ip address (0, or more than 1), this attribute will
 146  *      be skipped.
 147  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 148  *      the LSB bytes of the vif's mac address
 149  */
 150 enum {
 151         BC_FILTER_MAGIC_NONE = 0,
 152         BC_FILTER_MAGIC_IP,
 153         BC_FILTER_MAGIC_MAC,
 154 };
 155
 156 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 157         {
 158                 /* arp */
 159                 .discard = 0,
 160                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 161                 .attrs = {
 162                         {
 163                                 /* frame type - arp, hw type - ethernet */
 164                                 .offset_type =
 165                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 166                                 .offset = sizeof(rfc1042_header),
 167                                 .val = cpu_to_be32(0x08060001),
 168                                 .mask = cpu_to_be32(0xffffffff),
 169                         },
 170                         {
 171                                 /* arp dest ip */
 172                                 .offset_type =
 173                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 174                                 .offset = sizeof(rfc1042_header) + 2 +
 175                                           sizeof(struct arphdr) +
 176                                           ETH_ALEN + sizeof(__be32) +
 177                                           ETH_ALEN,
 178                                 .mask = cpu_to_be32(0xffffffff),
 179                                 /* mark it as special field */
 180                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 181                         },
 182                 },
 183         },
 184         {
 185                 /* dhcp offer bcast */
 186                 .discard = 0,
 187                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 188                 .attrs = {
 189                         {
 190                                 /* udp dest port - 68 (bootp client)*/
 191                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 192                                 .offset = offsetof(struct udphdr, dest),
 193                                 .val = cpu_to_be32(0x00440000),
 194                                 .mask = cpu_to_be32(0xffff0000),
 195                         },
 196                         {
 197                                 /* dhcp - lsb bytes of client hw address */
 198                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 199                                 .offset = 38,
 200                                 .mask = cpu_to_be32(0xffffffff),
 201                                 /* mark it as special field */
 202                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 203                         },
 204                 },
 205         },
 206         /* last filter must be empty */
 207         {},
 208 };
 209 #endif
 210
 211 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 212 {
 213         if (!iwl_mvm_is_d0i3_supported(mvm))
 214                 return;
 215
 216         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 217         spin_lock_bh(&mvm->refs_lock);
 218         mvm->refs[ref_type]++;
 219         spin_unlock_bh(&mvm->refs_lock);
 220         iwl_trans_ref(mvm->trans);
 221 }
 222
 223 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 224 {
 225         if (!iwl_mvm_is_d0i3_supported(mvm))
 226                 return;
 227
 228         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 229         spin_lock_bh(&mvm->refs_lock);
 230         WARN_ON(!mvm->refs[ref_type]--);
 231         spin_unlock_bh(&mvm->refs_lock);
 232         iwl_trans_unref(mvm->trans);
 233 }
 234
 235 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 236                                      enum iwl_mvm_ref_type except_ref)
 237 {
 238         int i, j;
 239
 240         if (!iwl_mvm_is_d0i3_supported(mvm))
 241                 return;
 242
 243         spin_lock_bh(&mvm->refs_lock);
 244         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 245                 if (except_ref == i || !mvm->refs[i])
 246                         continue;
 247
 248                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 249                               i, mvm->refs[i]);
 250                 for (j = 0; j < mvm->refs[i]; j++)
 251                         iwl_trans_unref(mvm->trans);
 252                 mvm->refs[i] = 0;
 253         }
 254         spin_unlock_bh(&mvm->refs_lock);
 255 }
 256
 257 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 258 {
 259         int i;
 260         bool taken = false;
 261
 262         if (!iwl_mvm_is_d0i3_supported(mvm))
 263                 return true;
 264
 265         spin_lock_bh(&mvm->refs_lock);
 266         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 267                 if (mvm->refs[i]) {
 268                         taken = true;
 269                         break;
 270                 }
 271         }
 272         spin_unlock_bh(&mvm->refs_lock);
 273
 274         return taken;
 275 }
 276
 277 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 278 {
 279         iwl_mvm_ref(mvm, ref_type);
 280
 281         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 282                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 283                                 HZ)) {
 284                 WARN_ON_ONCE(1);
 285                 iwl_mvm_unref(mvm, ref_type);
 286                 return -EIO;
 287         }
 288
 289         return 0;
 290 }
 291
 292 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 293 {
 294         int i;
 295
 296         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 297         for (i = 0; i < NUM_PHY_CTX; i++) {
 298                 mvm->phy_ctxts[i].id = i;
 299                 mvm->phy_ctxts[i].ref = 0;
 300         }
 301 }
 302
 303 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 304 {
 305         struct ieee80211_hw *hw = mvm->hw;
 306         int num_mac, ret, i;
 307
 308         /* Tell mac80211 our characteristics */
 309         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 310                     IEEE80211_HW_SPECTRUM_MGMT |
 311                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 312                     IEEE80211_HW_QUEUE_CONTROL |
 313                     IEEE80211_HW_WANT_MONITOR_VIF |
 314                     IEEE80211_HW_SUPPORTS_PS |
 315                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 316                     IEEE80211_HW_AMPDU_AGGREGATION |
 317                     IEEE80211_HW_TIMING_BEACON_ONLY |
 318                     IEEE80211_HW_CONNECTION_MONITOR |
 319                     IEEE80211_HW_CHANCTX_STA_CSA |
 320                     IEEE80211_HW_SUPPORTS_CLONED_SKBS;
 321
 322         hw->queues = mvm->first_agg_queue;
 323         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 324         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 325                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 326         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 327                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 328         hw->rate_control_algorithm = "iwl-mvm-rs";
 329
 330         /*
 331          * Enable 11w if advertised by firmware and software crypto
 332          * is not enabled (as the firmware will interpret some mgmt
 333          * packets, so enabling it with software crypto isn't safe)
 334          */
 335         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 336             !iwlwifi_mod_params.sw_crypto)
 337                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 338
 339         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
 340             IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
 341             !iwlwifi_mod_params.uapsd_disable) {
 342                 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
 343                 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 344                 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 345         }
 346
 347         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
 348             mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
 349                 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
 350                 hw->wiphy->features |=
 351                         NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 352                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 353         }
 354
 355         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 356         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 357         hw->chanctx_data_size = sizeof(u16);
 358
 359         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 360                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 361                 BIT(NL80211_IFTYPE_AP) |
 362                 BIT(NL80211_IFTYPE_P2P_GO) |
 363                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 364                 BIT(NL80211_IFTYPE_ADHOC);
 365
 366         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 367         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 368                                        REGULATORY_DISABLE_BEACON_HINTS;
 369
 370         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 371                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 372
 373         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
 374                 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 375
 376         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 377         hw->wiphy->n_iface_combinations =
 378                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 379
 380         hw->wiphy->max_remain_on_channel_duration = 10000;
 381         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 382
 383         /* Extract MAC address */
 384         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 385         hw->wiphy->addresses = mvm->addresses;
 386         hw->wiphy->n_addresses = 1;
 387
 388         /* Extract additional MAC addresses if available */
 389         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 390                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 391
 392         for (i = 1; i < num_mac; i++) {
 393                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 394                        ETH_ALEN);
 395                 mvm->addresses[i].addr[5]++;
 396                 hw->wiphy->n_addresses++;
 397         }
 398
 399         iwl_mvm_reset_phy_ctxts(mvm);
 400
 401         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
 402
 403         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 404
 405         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 406                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 407                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 408         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 409                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 410                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 411
 412         hw->wiphy->hw_version = mvm->trans->hw_id;
 413
 414         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 415                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 416         else
 417                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 418
 419         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
 420                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 421                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 422                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 423                 /* we create the 802.11 header and zero length SSID IE. */
 424                 hw->wiphy->max_sched_scan_ie_len =
 425                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 426         }
 427
 428         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 429                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 430                                NL80211_FEATURE_P2P_GO_OPPPS |
 431                                NL80211_FEATURE_DYNAMIC_SMPS |
 432                                NL80211_FEATURE_STATIC_SMPS |
 433                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 434
 435         if (mvm->fw->ucode_capa.capa[0] &
 436             IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
 437                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 438         if (mvm->fw->ucode_capa.capa[0] &
 439             IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
 440                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 441
 442         if (mvm->fw->ucode_capa.capa[0] &
 443             IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
 444                 hw->wiphy->features |=
 445                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 446
 447         if (mvm->fw->ucode_capa.capa[0] &
 448             IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
 449                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 450
 451         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 452
 453         /* currently FW API supports only one optional cipher scheme */
 454         if (mvm->fw->cs[0].cipher) {
 455                 mvm->hw->n_cipher_schemes = 1;
 456                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 457         }
 458
 459 #ifdef CONFIG_PM_SLEEP
 460         if (iwl_mvm_is_d0i3_supported(mvm) &&
 461             device_can_wakeup(mvm->trans->dev)) {
 462                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 463                 hw->wiphy->wowlan = &mvm->wowlan;
 464         } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 465             mvm->trans->ops->d3_suspend &&
 466             mvm->trans->ops->d3_resume &&
 467             device_can_wakeup(mvm->trans->dev)) {
 468                 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 469                                     WIPHY_WOWLAN_DISCONNECT |
 470                                     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 471                                     WIPHY_WOWLAN_RFKILL_RELEASE |
 472                                     WIPHY_WOWLAN_NET_DETECT;
 473                 if (!iwlwifi_mod_params.sw_crypto)
 474                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 475                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 476                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 477
 478                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 479                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 480                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 481                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 482                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 483                 hw->wiphy->wowlan = &mvm->wowlan;
 484         }
 485 #endif
 486
 487 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 488         /* assign default bcast filtering configuration */
 489         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 490 #endif
 491
 492         ret = iwl_mvm_leds_init(mvm);
 493         if (ret)
 494                 return ret;
 495
 496         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
 497                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 498                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 499         }
 500
 501         if (mvm->fw->ucode_capa.capa[0] &
 502             IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
 503                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 504                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 505         }
 506
 507         ret = ieee80211_register_hw(mvm->hw);
 508         if (ret)
 509                 iwl_mvm_leds_exit(mvm);
 510
 511         return ret;
 512 }
 513
 514 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 515                              struct ieee80211_sta *sta,
 516                              struct sk_buff *skb)
 517 {
 518         struct iwl_mvm_sta *mvmsta;
 519         bool defer = false;
 520
 521         /*
 522          * double check the IN_D0I3 flag both before and after
 523          * taking the spinlock, in order to prevent taking
 524          * the spinlock when not needed.
 525          */
 526         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 527                 return false;
 528
 529         spin_lock(&mvm->d0i3_tx_lock);
 530         /*
 531          * testing the flag again ensures the skb dequeue
 532          * loop (on d0i3 exit) hasn't run yet.
 533          */
 534         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 535                 goto out;
 536
 537         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 538         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 539             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 540                 goto out;
 541
 542         __skb_queue_tail(&mvm->d0i3_tx, skb);
 543         ieee80211_stop_queues(mvm->hw);
 544
 545         /* trigger wakeup */
 546         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 547         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 548
 549         defer = true;
 550 out:
 551         spin_unlock(&mvm->d0i3_tx_lock);
 552         return defer;
 553 }
 554
 555 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 556                            struct ieee80211_tx_control *control,
 557                            struct sk_buff *skb)
 558 {
 559         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 560         struct ieee80211_sta *sta = control->sta;
 561         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 562         struct ieee80211_hdr *hdr = (void *)skb->data;
 563
 564         if (iwl_mvm_is_radio_killed(mvm)) {
 565                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 566                 goto drop;
 567         }
 568
 569         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 570             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 571             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 572                 goto drop;
 573
 574         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 575         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 576                      ieee80211_is_mgmt(hdr->frame_control) &&
 577                      !ieee80211_is_deauth(hdr->frame_control) &&
 578                      !ieee80211_is_disassoc(hdr->frame_control) &&
 579                      !ieee80211_is_action(hdr->frame_control)))
 580                 sta = NULL;
 581
 582         if (sta) {
 583                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 584                         return;
 585                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 586                         goto drop;
 587                 return;
 588         }
 589
 590         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 591                 goto drop;
 592         return;
 593  drop:
 594         ieee80211_free_txskb(hw, skb);
 595 }
 596
 597 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 598 {
 599         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 600                 return false;
 601         return true;
 602 }
 603
 604 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 605 {
 606         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 607                 return false;
 608         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 609                 return true;
 610
 611         /* enabled by default */
 612         return true;
 613 }
 614
 615 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 616                                     struct ieee80211_vif *vif,
 617                                     enum ieee80211_ampdu_mlme_action action,
 618                                     struct ieee80211_sta *sta, u16 tid,
 619                                     u16 *ssn, u8 buf_size)
 620 {
 621         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 622         int ret;
 623         bool tx_agg_ref = false;
 624
 625         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 626                      sta->addr, tid, action);
 627
 628         if (!(mvm->nvm_data->sku_cap_11n_enable))
 629                 return -EACCES;
 630
 631         /* return from D0i3 before starting a new Tx aggregation */
 632         switch (action) {
 633         case IEEE80211_AMPDU_TX_START:
 634         case IEEE80211_AMPDU_TX_STOP_CONT:
 635         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 636         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 637         case IEEE80211_AMPDU_TX_OPERATIONAL:
 638                 /*
 639                  * for tx start, wait synchronously until D0i3 exit to
 640                  * get the correct sequence number for the tid.
 641                  * additionally, some other ampdu actions use direct
 642                  * target access, which is not handled automatically
 643                  * by the trans layer (unlike commands), so wait for
 644                  * d0i3 exit in these cases as well.
 645                  */
 646                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 647                 if (ret)
 648                         return ret;
 649
 650                 tx_agg_ref = true;
 651                 break;
 652         default:
 653                 break;
 654         }
 655
 656         mutex_lock(&mvm->mutex);
 657
 658         switch (action) {
 659         case IEEE80211_AMPDU_RX_START:
 660                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 661                         ret = -EINVAL;
 662                         break;
 663                 }
 664                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 665                 break;
 666         case IEEE80211_AMPDU_RX_STOP:
 667                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 668                 break;
 669         case IEEE80211_AMPDU_TX_START:
 670                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 671                         ret = -EINVAL;
 672                         break;
 673                 }
 674                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 675                 break;
 676         case IEEE80211_AMPDU_TX_STOP_CONT:
 677                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 678                 break;
 679         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 680         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 681                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 682                 break;
 683         case IEEE80211_AMPDU_TX_OPERATIONAL:
 684                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 685                 break;
 686         default:
 687                 WARN_ON_ONCE(1);
 688                 ret = -EINVAL;
 689                 break;
 690         }
 691         mutex_unlock(&mvm->mutex);
 692
 693         /*
 694          * If the tid is marked as started, we won't use it for offloaded
 695          * traffic on the next D0i3 entry. It's safe to unref.
 696          */
 697         if (tx_agg_ref)
 698                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 699
 700         return ret;
 701 }
 702
 703 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 704                                      struct ieee80211_vif *vif)
 705 {
 706         struct iwl_mvm *mvm = data;
 707         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 708
 709         mvmvif->uploaded = false;
 710         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 711
 712         /* does this make sense at all? */
 713         mvmvif->color++;
 714
 715         spin_lock_bh(&mvm->time_event_lock);
 716         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 717         spin_unlock_bh(&mvm->time_event_lock);
 718
 719         mvmvif->phy_ctxt = NULL;
 720         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 721 }
 722
 723 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
 724                                      const void *data, size_t datalen)
 725 {
 726         const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
 727         ssize_t bytes_read;
 728         ssize_t bytes_read_trans;
 729
 730         if (offset < dump_ptrs->op_mode_len) {
 731                 bytes_read = min_t(ssize_t, count,
 732                                    dump_ptrs->op_mode_len - offset);
 733                 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
 734                        bytes_read);
 735                 offset += bytes_read;
 736                 count -= bytes_read;
 737
 738                 if (count == 0)
 739                         return bytes_read;
 740         } else {
 741                 bytes_read = 0;
 742         }
 743
 744         if (!dump_ptrs->trans_ptr)
 745                 return bytes_read;
 746
 747         offset -= dump_ptrs->op_mode_len;
 748         bytes_read_trans = min_t(ssize_t, count,
 749                                  dump_ptrs->trans_ptr->len - offset);
 750         memcpy(buffer + bytes_read,
 751                (u8 *)dump_ptrs->trans_ptr->data + offset,
 752                bytes_read_trans);
 753
 754         return bytes_read + bytes_read_trans;
 755 }
 756
 757 static void iwl_mvm_free_coredump(const void *data)
 758 {
 759         const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
 760
 761         vfree(fw_error_dump->op_mode_ptr);
 762         vfree(fw_error_dump->trans_ptr);
 763         kfree(fw_error_dump);
 764 }
 765
 766 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 767 {
 768         struct iwl_fw_error_dump_file *dump_file;
 769         struct iwl_fw_error_dump_data *dump_data;
 770         struct iwl_fw_error_dump_info *dump_info;
 771         struct iwl_mvm_dump_ptrs *fw_error_dump;
 772         const struct fw_img *img;
 773         u32 sram_len, sram_ofs;
 774         u32 file_len, rxf_len;
 775         unsigned long flags;
 776         int reg_val;
 777
 778         lockdep_assert_held(&mvm->mutex);
 779
 780         fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
 781         if (!fw_error_dump)
 782                 return;
 783
 784         img = &mvm->fw->img[mvm->cur_ucode];
 785         sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 786         sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 787
 788         /* reading buffer size */
 789         reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
 790         rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
 791
 792         /* the register holds the value divided by 128 */
 793         rxf_len = rxf_len << 7;
 794
 795         file_len = sizeof(*dump_file) +
 796                    sizeof(*dump_data) * 3 +
 797                    sram_len +
 798                    rxf_len +
 799                    sizeof(*dump_info);
 800
 801         dump_file = vzalloc(file_len);
 802         if (!dump_file) {
 803                 kfree(fw_error_dump);
 804                 return;
 805         }
 806
 807         fw_error_dump->op_mode_ptr = dump_file;
 808
 809         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
 810         dump_data = (void *)dump_file->data;
 811
 812         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
 813         dump_data->len = cpu_to_le32(sizeof(*dump_info));
 814         dump_info = (void *) dump_data->data;
 815         dump_info->device_family =
 816                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
 817                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
 818                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
 819         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
 820                sizeof(dump_info->fw_human_readable));
 821         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
 822                 sizeof(dump_info->dev_human_readable));
 823         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
 824                 sizeof(dump_info->bus_human_readable));
 825
 826         dump_data = iwl_fw_error_next_data(dump_data);
 827         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 828         dump_data->len = cpu_to_le32(rxf_len);
 829
 830         if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
 831                 u32 *rxf = (void *)dump_data->data;
 832                 int i;
 833
 834                 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
 835                         iwl_trans_write_prph(mvm->trans,
 836                                              RXF_LD_FENCE_OFFSET_ADDR,
 837                                              i * sizeof(u32));
 838                         rxf[i] = iwl_trans_read_prph(mvm->trans,
 839                                                      RXF_FIFO_RD_FENCE_ADDR);
 840                 }
 841                 iwl_trans_release_nic_access(mvm->trans, &flags);
 842         }
 843
 844         dump_data = iwl_fw_error_next_data(dump_data);
 845         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
 846         dump_data->len = cpu_to_le32(sram_len);
 847         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
 848                                  sram_len);
 849
 850         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
 851         fw_error_dump->op_mode_len = file_len;
 852         if (fw_error_dump->trans_ptr)
 853                 file_len += fw_error_dump->trans_ptr->len;
 854         dump_file->file_len = cpu_to_le32(file_len);
 855
 856         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
 857                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
 858 }
 859
 860 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 861 {
 862         /* clear the D3 reconfig, we only need it to avoid dumping a
 863          * firmware coredump on reconfiguration, we shouldn't do that
 864          * on D3->D0 transition
 865          */
 866         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
 867                 iwl_mvm_fw_error_dump(mvm);
 868
 869         iwl_trans_stop_device(mvm->trans);
 870
 871         mvm->scan_status = IWL_MVM_SCAN_NONE;
 872         mvm->ps_disabled = false;
 873         mvm->calibrating = false;
 874
 875         /* just in case one was running */
 876         ieee80211_remain_on_channel_expired(mvm->hw);
 877
 878         ieee80211_iterate_active_interfaces_atomic(
 879                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 880                 iwl_mvm_cleanup_iterator, mvm);
 881
 882         mvm->p2p_device_vif = NULL;
 883         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 884
 885         iwl_mvm_reset_phy_ctxts(mvm);
 886         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 887         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 888         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 889         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 890         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 891         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 892         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
 893         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
 894         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
 895
 896         ieee80211_wake_queues(mvm->hw);
 897
 898         /* cleanup all stale references (scan, roc), but keep the
 899          * ucode_down ref until reconfig is complete */
 900         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 901
 902         /* clear any stale d0i3 state */
 903         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
 904
 905         mvm->vif_count = 0;
 906         mvm->rx_ba_sessions = 0;
 907 }
 908
 909 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
 910 {
 911         int ret;
 912
 913         lockdep_assert_held(&mvm->mutex);
 914
 915         /* Clean up some internal and mac80211 state on restart */
 916         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 917                 iwl_mvm_restart_cleanup(mvm);
 918
 919         ret = iwl_mvm_up(mvm);
 920
 921         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
 922                 /* Something went wrong - we need to finish some cleanup
 923                  * that normally iwl_mvm_mac_restart_complete() below
 924                  * would do.
 925                  */
 926                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 927                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
 928         }
 929
 930         return ret;
 931 }
 932
 933 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 934 {
 935         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 936         int ret;
 937
 938         mutex_lock(&mvm->mutex);
 939         ret = __iwl_mvm_mac_start(mvm);
 940         mutex_unlock(&mvm->mutex);
 941
 942         return ret;
 943 }
 944
 945 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
 946 {
 947         int ret;
 948
 949         mutex_lock(&mvm->mutex);
 950
 951         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 952         iwl_mvm_d0i3_enable_tx(mvm, NULL);
 953         ret = iwl_mvm_update_quotas(mvm, NULL);
 954         if (ret)
 955                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 956                         ret);
 957
 958         /* allow transport/FW low power modes */
 959         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 960
 961         /*
 962          * If we have TDLS peers, remove them. We don't know the last seqno/PN
 963          * of packets the FW sent out, so we must reconnect.
 964          */
 965         iwl_mvm_teardown_tdls_peers(mvm);
 966
 967         mutex_unlock(&mvm->mutex);
 968 }
 969
 970 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
 971 {
 972         bool exit_now;
 973
 974         if (!iwl_mvm_is_d0i3_supported(mvm))
 975                 return;
 976
 977         mutex_lock(&mvm->d0i3_suspend_mutex);
 978         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
 979         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
 980                                         &mvm->d0i3_suspend_flags);
 981         mutex_unlock(&mvm->d0i3_suspend_mutex);
 982
 983         if (exit_now) {
 984                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
 985                 _iwl_mvm_exit_d0i3(mvm);
 986         }
 987 }
 988
 989 static void
 990 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
 991                               enum ieee80211_reconfig_type reconfig_type)
 992 {
 993         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 994
 995         switch (reconfig_type) {
 996         case IEEE80211_RECONFIG_TYPE_RESTART:
 997                 iwl_mvm_restart_complete(mvm);
 998                 break;
 999         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1000                 iwl_mvm_resume_complete(mvm);
1001                 break;
1002         }
1003 }
1004
1005 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1006 {
1007         lockdep_assert_held(&mvm->mutex);
1008
1009         /* disallow low power states when the FW is down */
1010         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1011
1012         /* async_handlers_wk is now blocked */
1013
1014         /*
1015          * The work item could be running or queued if the
1016          * ROC time event stops just as we get here.
1017          */
1018         cancel_work_sync(&mvm->roc_done_wk);
1019
1020         iwl_trans_stop_device(mvm->trans);
1021
1022         iwl_mvm_async_handlers_purge(mvm);
1023         /* async_handlers_list is empty and will stay empty: HW is stopped */
1024
1025         /* the fw is stopped, the aux sta is dead: clean up driver state */
1026         iwl_mvm_del_aux_sta(mvm);
1027
1028         mvm->ucode_loaded = false;
1029 }
1030
1031 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1032 {
1033         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1034
1035         flush_work(&mvm->d0i3_exit_work);
1036         flush_work(&mvm->async_handlers_wk);
1037         flush_work(&mvm->fw_error_dump_wk);
1038
1039         mutex_lock(&mvm->mutex);
1040         __iwl_mvm_mac_stop(mvm);
1041         mutex_unlock(&mvm->mutex);
1042
1043         /*
1044          * The worker might have been waiting for the mutex, let it run and
1045          * discover that its list is now empty.
1046          */
1047         cancel_work_sync(&mvm->async_handlers_wk);
1048 }
1049
1050 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1051 {
1052         u16 i;
1053
1054         lockdep_assert_held(&mvm->mutex);
1055
1056         for (i = 0; i < NUM_PHY_CTX; i++)
1057                 if (!mvm->phy_ctxts[i].ref)
1058                         return &mvm->phy_ctxts[i];
1059
1060         IWL_ERR(mvm, "No available PHY context\n");
1061         return NULL;
1062 }
1063
1064 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1065                                 s8 tx_power)
1066 {
1067         /* FW is in charge of regulatory enforcement */
1068         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1069                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1070                 .pwr_restriction = cpu_to_le16(tx_power),
1071         };
1072
1073         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1074                                     sizeof(reduce_txpwr_cmd),
1075                                     &reduce_txpwr_cmd);
1076 }
1077
1078 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1079                                      struct ieee80211_vif *vif)
1080 {
1081         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1082         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1083         int ret;
1084
1085         /*
1086          * make sure D0i3 exit is completed, otherwise a target access
1087          * during tx queue configuration could be done when still in
1088          * D0i3 state.
1089          */
1090         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1091         if (ret)
1092                 return ret;
1093
1094         /*
1095          * Not much to do here. The stack will not allow interface
1096          * types or combinations that we didn't advertise, so we
1097          * don't really have to check the types.
1098          */
1099
1100         mutex_lock(&mvm->mutex);
1101
1102         /* Allocate resources for the MAC context, and add it to the fw  */
1103         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1104         if (ret)
1105                 goto out_unlock;
1106
1107         /* Counting number of interfaces is needed for legacy PM */
1108         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1109                 mvm->vif_count++;
1110
1111         /*
1112          * The AP binding flow can be done only after the beacon
1113          * template is configured (which happens only in the mac80211
1114          * start_ap() flow), and adding the broadcast station can happen
1115          * only after the binding.
1116          * In addition, since modifying the MAC before adding a bcast
1117          * station is not allowed by the FW, delay the adding of MAC context to
1118          * the point where we can also add the bcast station.
1119          * In short: there's not much we can do at this point, other than
1120          * allocating resources :)
1121          */
1122         if (vif->type == NL80211_IFTYPE_AP ||
1123             vif->type == NL80211_IFTYPE_ADHOC) {
1124                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1125                 if (ret) {
1126                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1127                         goto out_release;
1128                 }
1129
1130                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1131                 goto out_unlock;
1132         }
1133
1134         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1135         if (ret)
1136                 goto out_release;
1137
1138         ret = iwl_mvm_power_update_mac(mvm);
1139         if (ret)
1140                 goto out_release;
1141
1142         /* beacon filtering */
1143         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1144         if (ret)
1145                 goto out_remove_mac;
1146
1147         if (!mvm->bf_allowed_vif &&
1148             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1149                 mvm->bf_allowed_vif = mvmvif;
1150                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1151                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1152         }
1153
1154         /*
1155          * P2P_DEVICE interface does not have a channel context assigned to it,
1156          * so a dedicated PHY context is allocated to it and the corresponding
1157          * MAC context is bound to it at this stage.
1158          */
1159         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1160
1161                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1162                 if (!mvmvif->phy_ctxt) {
1163                         ret = -ENOSPC;
1164                         goto out_free_bf;
1165                 }
1166
1167                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1168                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1169                 if (ret)
1170                         goto out_unref_phy;
1171
1172                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1173                 if (ret)
1174                         goto out_unbind;
1175
1176                 /* Save a pointer to p2p device vif, so it can later be used to
1177                  * update the p2p device MAC when a GO is started/stopped */
1178                 mvm->p2p_device_vif = vif;
1179         }
1180
1181         iwl_mvm_vif_dbgfs_register(mvm, vif);
1182         goto out_unlock;
1183
1184  out_unbind:
1185         iwl_mvm_binding_remove_vif(mvm, vif);
1186  out_unref_phy:
1187         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1188  out_free_bf:
1189         if (mvm->bf_allowed_vif == mvmvif) {
1190                 mvm->bf_allowed_vif = NULL;
1191                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1192                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1193         }
1194  out_remove_mac:
1195         mvmvif->phy_ctxt = NULL;
1196         iwl_mvm_mac_ctxt_remove(mvm, vif);
1197  out_release:
1198         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1199                 mvm->vif_count--;
1200
1201         iwl_mvm_mac_ctxt_release(mvm, vif);
1202  out_unlock:
1203         mutex_unlock(&mvm->mutex);
1204
1205         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1206
1207         return ret;
1208 }
1209
1210 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1211                                         struct ieee80211_vif *vif)
1212 {
1213         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1214
1215         if (tfd_msk) {
1216                 mutex_lock(&mvm->mutex);
1217                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1218                 mutex_unlock(&mvm->mutex);
1219         }
1220
1221         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1222                 /*
1223                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1224                  * We assume here that all the packets sent to the OFFCHANNEL
1225                  * queue are sent in ROC session.
1226                  */
1227                 flush_work(&mvm->roc_done_wk);
1228         } else {
1229                 /*
1230                  * By now, all the AC queues are empty. The AGG queues are
1231                  * empty too. We already got all the Tx responses for all the
1232                  * packets in the queues. The drain work can have been
1233                  * triggered. Flush it.
1234                  */
1235                 flush_work(&mvm->sta_drained_wk);
1236         }
1237 }
1238
1239 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1240                                          struct ieee80211_vif *vif)
1241 {
1242         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1243         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1244
1245         iwl_mvm_prepare_mac_removal(mvm, vif);
1246
1247         mutex_lock(&mvm->mutex);
1248
1249         if (mvm->bf_allowed_vif == mvmvif) {
1250                 mvm->bf_allowed_vif = NULL;
1251                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1252                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1253         }
1254
1255         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1256
1257         /*
1258          * For AP/GO interface, the tear down of the resources allocated to the
1259          * interface is be handled as part of the stop_ap flow.
1260          */
1261         if (vif->type == NL80211_IFTYPE_AP ||
1262             vif->type == NL80211_IFTYPE_ADHOC) {
1263 #ifdef CONFIG_NL80211_TESTMODE
1264                 if (vif == mvm->noa_vif) {
1265                         mvm->noa_vif = NULL;
1266                         mvm->noa_duration = 0;
1267                 }
1268 #endif
1269                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1270                 goto out_release;
1271         }
1272
1273         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1274                 mvm->p2p_device_vif = NULL;
1275                 iwl_mvm_rm_bcast_sta(mvm, vif);
1276                 iwl_mvm_binding_remove_vif(mvm, vif);
1277                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1278                 mvmvif->phy_ctxt = NULL;
1279         }
1280
1281         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1282                 mvm->vif_count--;
1283
1284         iwl_mvm_power_update_mac(mvm);
1285         iwl_mvm_mac_ctxt_remove(mvm, vif);
1286
1287 out_release:
1288         iwl_mvm_mac_ctxt_release(mvm, vif);
1289         mutex_unlock(&mvm->mutex);
1290 }
1291
1292 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1293 {
1294         return 0;
1295 }
1296
1297 struct iwl_mvm_mc_iter_data {
1298         struct iwl_mvm *mvm;
1299         int port_id;
1300 };
1301
1302 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1303                                       struct ieee80211_vif *vif)
1304 {
1305         struct iwl_mvm_mc_iter_data *data = _data;
1306         struct iwl_mvm *mvm = data->mvm;
1307         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1308         int ret, len;
1309
1310         /* if we don't have free ports, mcast frames will be dropped */
1311         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1312                 return;
1313
1314         if (vif->type != NL80211_IFTYPE_STATION ||
1315             !vif->bss_conf.assoc)
1316                 return;
1317
1318         cmd->port_id = data->port_id++;
1319         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1320         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1321
1322         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1323         if (ret)
1324                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1325 }
1326
1327 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1328 {
1329         struct iwl_mvm_mc_iter_data iter_data = {
1330                 .mvm = mvm,
1331         };
1332
1333         lockdep_assert_held(&mvm->mutex);
1334
1335         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1336                 return;
1337
1338         ieee80211_iterate_active_interfaces_atomic(
1339                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1340                 iwl_mvm_mc_iface_iterator, &iter_data);
1341 }
1342
1343 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1344                                      struct netdev_hw_addr_list *mc_list)
1345 {
1346         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1347         struct iwl_mcast_filter_cmd *cmd;
1348         struct netdev_hw_addr *addr;
1349         int addr_count;
1350         bool pass_all;
1351         int len;
1352
1353         addr_count = netdev_hw_addr_list_count(mc_list);
1354         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1355                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1356         if (pass_all)
1357                 addr_count = 0;
1358
1359         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1360         cmd = kzalloc(len, GFP_ATOMIC);
1361         if (!cmd)
1362                 return 0;
1363
1364         if (pass_all) {
1365                 cmd->pass_all = 1;
1366                 return (u64)(unsigned long)cmd;
1367         }
1368
1369         netdev_hw_addr_list_for_each(addr, mc_list) {
1370                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1371                                    cmd->count, addr->addr);
1372                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1373                        addr->addr, ETH_ALEN);
1374                 cmd->count++;
1375         }
1376
1377         return (u64)(unsigned long)cmd;
1378 }
1379
1380 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1381                                      unsigned int changed_flags,
1382                                      unsigned int *total_flags,
1383                                      u64 multicast)
1384 {
1385         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1386         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1387
1388         mutex_lock(&mvm->mutex);
1389
1390         /* replace previous configuration */
1391         kfree(mvm->mcast_filter_cmd);
1392         mvm->mcast_filter_cmd = cmd;
1393
1394         if (!cmd)
1395                 goto out;
1396
1397         iwl_mvm_recalc_multicast(mvm);
1398 out:
1399         mutex_unlock(&mvm->mutex);
1400         *total_flags = 0;
1401 }
1402
1403 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1404 struct iwl_bcast_iter_data {
1405         struct iwl_mvm *mvm;
1406         struct iwl_bcast_filter_cmd *cmd;
1407         u8 current_filter;
1408 };
1409
1410 static void
1411 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1412                          const struct iwl_fw_bcast_filter *in_filter,
1413                          struct iwl_fw_bcast_filter *out_filter)
1414 {
1415         struct iwl_fw_bcast_filter_attr *attr;
1416         int i;
1417
1418         memcpy(out_filter, in_filter, sizeof(*out_filter));
1419
1420         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1421                 attr = &out_filter->attrs[i];
1422
1423                 if (!attr->mask)
1424                         break;
1425
1426                 switch (attr->reserved1) {
1427                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1428                         if (vif->bss_conf.arp_addr_cnt != 1) {
1429                                 attr->mask = 0;
1430                                 continue;
1431                         }
1432
1433                         attr->val = vif->bss_conf.arp_addr_list[0];
1434                         break;
1435                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1436                         attr->val = *(__be32 *)&vif->addr[2];
1437                         break;
1438                 default:
1439                         break;
1440                 }
1441                 attr->reserved1 = 0;
1442                 out_filter->num_attrs++;
1443         }
1444 }
1445
1446 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1447                                           struct ieee80211_vif *vif)
1448 {
1449         struct iwl_bcast_iter_data *data = _data;
1450         struct iwl_mvm *mvm = data->mvm;
1451         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1452         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1453         struct iwl_fw_bcast_mac *bcast_mac;
1454         int i;
1455
1456         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1457                 return;
1458
1459         bcast_mac = &cmd->macs[mvmvif->id];
1460
1461         /*
1462          * enable filtering only for associated stations, but not for P2P
1463          * Clients
1464          */
1465         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1466             !vif->bss_conf.assoc)
1467                 return;
1468
1469         bcast_mac->default_discard = 1;
1470
1471         /* copy all configured filters */
1472         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1473                 /*
1474                  * Make sure we don't exceed our filters limit.
1475                  * if there is still a valid filter to be configured,
1476                  * be on the safe side and just allow bcast for this mac.
1477                  */
1478                 if (WARN_ON_ONCE(data->current_filter >=
1479                                  ARRAY_SIZE(cmd->filters))) {
1480                         bcast_mac->default_discard = 0;
1481                         bcast_mac->attached_filters = 0;
1482                         break;
1483                 }
1484
1485                 iwl_mvm_set_bcast_filter(vif,
1486                                          &mvm->bcast_filters[i],
1487                                          &cmd->filters[data->current_filter]);
1488
1489                 /* skip current filter if it contains no attributes */
1490                 if (!cmd->filters[data->current_filter].num_attrs)
1491                         continue;
1492
1493                 /* attach the filter to current mac */
1494                 bcast_mac->attached_filters |=
1495                                 cpu_to_le16(BIT(data->current_filter));
1496
1497                 data->current_filter++;
1498         }
1499 }
1500
1501 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1502                                     struct iwl_bcast_filter_cmd *cmd)
1503 {
1504         struct iwl_bcast_iter_data iter_data = {
1505                 .mvm = mvm,
1506                 .cmd = cmd,
1507         };
1508
1509         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1510                 return false;
1511
1512         memset(cmd, 0, sizeof(*cmd));
1513         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1514         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1515
1516 #ifdef CONFIG_IWLWIFI_DEBUGFS
1517         /* use debugfs filters/macs if override is configured */
1518         if (mvm->dbgfs_bcast_filtering.override) {
1519                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1520                        sizeof(cmd->filters));
1521                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1522                        sizeof(cmd->macs));
1523                 return true;
1524         }
1525 #endif
1526
1527         /* if no filters are configured, do nothing */
1528         if (!mvm->bcast_filters)
1529                 return false;
1530
1531         /* configure and attach these filters for each associated sta vif */
1532         ieee80211_iterate_active_interfaces(
1533                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1534                 iwl_mvm_bcast_filter_iterator, &iter_data);
1535
1536         return true;
1537 }
1538 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1539                                           struct ieee80211_vif *vif)
1540 {
1541         struct iwl_bcast_filter_cmd cmd;
1542
1543         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1544                 return 0;
1545
1546         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1547                 return 0;
1548
1549         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1550                                     sizeof(cmd), &cmd);
1551 }
1552 #else
1553 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1554                                                  struct ieee80211_vif *vif)
1555 {
1556         return 0;
1557 }
1558 #endif
1559
1560 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1561                                              struct ieee80211_vif *vif,
1562                                              struct ieee80211_bss_conf *bss_conf,
1563                                              u32 changes)
1564 {
1565         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1566         int ret;
1567
1568         /*
1569          * Re-calculate the tsf id, as the master-slave relations depend on the
1570          * beacon interval, which was not known when the station interface was
1571          * added.
1572          */
1573         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1574                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1575
1576         /*
1577          * If we're not associated yet, take the (new) BSSID before associating
1578          * so the firmware knows. If we're already associated, then use the old
1579          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1580          * branch for disassociation below.
1581          */
1582         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1583                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1584
1585         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1586         if (ret)
1587                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1588
1589         /* after sending it once, adopt mac80211 data */
1590         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1591         mvmvif->associated = bss_conf->assoc;
1592
1593         if (changes & BSS_CHANGED_ASSOC) {
1594                 if (bss_conf->assoc) {
1595                         /* add quota for this interface */
1596                         ret = iwl_mvm_update_quotas(mvm, NULL);
1597                         if (ret) {
1598                                 IWL_ERR(mvm, "failed to update quotas\n");
1599                                 return;
1600                         }
1601
1602                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1603                                      &mvm->status)) {
1604                                 /*
1605                                  * If we're restarting then the firmware will
1606                                  * obviously have lost synchronisation with
1607                                  * the AP. It will attempt to synchronise by
1608                                  * itself, but we can make it more reliable by
1609                                  * scheduling a session protection time event.
1610                                  *
1611                                  * The firmware needs to receive a beacon to
1612                                  * catch up with synchronisation, use 110% of
1613                                  * the beacon interval.
1614                                  *
1615                                  * Set a large maximum delay to allow for more
1616                                  * than a single interface.
1617                                  */
1618                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1619                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1620                                                         5 * dur, false);
1621                         }
1622
1623                         iwl_mvm_sf_update(mvm, vif, false);
1624                         iwl_mvm_power_vif_assoc(mvm, vif);
1625                         if (vif->p2p) {
1626                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1627                                 iwl_mvm_update_smps(mvm, vif,
1628                                                     IWL_MVM_SMPS_REQ_PROT,
1629                                                     IEEE80211_SMPS_DYNAMIC);
1630                         }
1631                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1632                         /*
1633                          * If update fails - SF might be running in associated
1634                          * mode while disassociated - which is forbidden.
1635                          */
1636                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1637                                   "Failed to update SF upon disassociation\n");
1638
1639                         /* remove AP station now that the MAC is unassoc */
1640                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1641                         if (ret)
1642                                 IWL_ERR(mvm, "failed to remove AP station\n");
1643
1644                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1645                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1646                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1647                         /* remove quota for this interface */
1648                         ret = iwl_mvm_update_quotas(mvm, NULL);
1649                         if (ret)
1650                                 IWL_ERR(mvm, "failed to update quotas\n");
1651
1652                         if (vif->p2p)
1653                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1654
1655                         /* this will take the cleared BSSID from bss_conf */
1656                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1657                         if (ret)
1658                                 IWL_ERR(mvm,
1659                                         "failed to update MAC %pM (clear after unassoc)\n",
1660                                         vif->addr);
1661                 }
1662
1663                 iwl_mvm_recalc_multicast(mvm);
1664                 iwl_mvm_configure_bcast_filter(mvm, vif);
1665
1666                 /* reset rssi values */
1667                 mvmvif->bf_data.ave_beacon_signal = 0;
1668
1669                 iwl_mvm_bt_coex_vif_change(mvm);
1670                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1671                                     IEEE80211_SMPS_AUTOMATIC);
1672         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1673                 /*
1674                  * We received a beacon _after_ association so
1675                  * remove the session protection.
1676                  */
1677                 iwl_mvm_remove_time_event(mvm, mvmvif,
1678                                           &mvmvif->time_event_data);
1679         }
1680
1681         if (changes & BSS_CHANGED_BEACON_INFO) {
1682                 iwl_mvm_sf_update(mvm, vif, false);
1683                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1684         }
1685
1686         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1687                 ret = iwl_mvm_power_update_mac(mvm);
1688                 if (ret)
1689                         IWL_ERR(mvm, "failed to update power mode\n");
1690         }
1691
1692         if (changes & BSS_CHANGED_TXPOWER) {
1693                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1694                                 bss_conf->txpower);
1695                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1696         }
1697
1698         if (changes & BSS_CHANGED_CQM) {
1699                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1700                 /* reset cqm events tracking */
1701                 mvmvif->bf_data.last_cqm_event = 0;
1702                 if (mvmvif->bf_data.bf_enabled) {
1703                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1704                         if (ret)
1705                                 IWL_ERR(mvm,
1706                                         "failed to update CQM thresholds\n");
1707                 }
1708         }
1709
1710         if (changes & BSS_CHANGED_ARP_FILTER) {
1711                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1712                 iwl_mvm_configure_bcast_filter(mvm, vif);
1713         }
1714 }
1715
1716 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1717                                  struct ieee80211_vif *vif)
1718 {
1719         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1720         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1721         int ret;
1722
1723         /*
1724          * iwl_mvm_mac_ctxt_add() might read directly from the device
1725          * (the system time), so make sure it is available.
1726          */
1727         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1728         if (ret)
1729                 return ret;
1730
1731         mutex_lock(&mvm->mutex);
1732
1733         /* Send the beacon template */
1734         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1735         if (ret)
1736                 goto out_unlock;
1737
1738         /*
1739          * Re-calculate the tsf id, as the master-slave relations depend on the
1740          * beacon interval, which was not known when the AP interface was added.
1741          */
1742         if (vif->type == NL80211_IFTYPE_AP)
1743                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1744
1745         /* Add the mac context */
1746         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1747         if (ret)
1748                 goto out_unlock;
1749
1750         /* Perform the binding */
1751         ret = iwl_mvm_binding_add_vif(mvm, vif);
1752         if (ret)
1753                 goto out_remove;
1754
1755         /* Send the bcast station. At this stage the TBTT and DTIM time events
1756          * are added and applied to the scheduler */
1757         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1758         if (ret)
1759                 goto out_unbind;
1760
1761         /* must be set before quota calculations */
1762         mvmvif->ap_ibss_active = true;
1763
1764         /* power updated needs to be done before quotas */
1765         iwl_mvm_power_update_mac(mvm);
1766
1767         ret = iwl_mvm_update_quotas(mvm, NULL);
1768         if (ret)
1769                 goto out_quota_failed;
1770
1771         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1772         if (vif->p2p && mvm->p2p_device_vif)
1773                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1774
1775         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1776
1777         iwl_mvm_bt_coex_vif_change(mvm);
1778
1779         /* we don't support TDLS during DCM */
1780         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1781                 iwl_mvm_teardown_tdls_peers(mvm);
1782
1783         mutex_unlock(&mvm->mutex);
1784         return 0;
1785
1786 out_quota_failed:
1787         iwl_mvm_power_update_mac(mvm);
1788         mvmvif->ap_ibss_active = false;
1789         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1790 out_unbind:
1791         iwl_mvm_binding_remove_vif(mvm, vif);
1792 out_remove:
1793         iwl_mvm_mac_ctxt_remove(mvm, vif);
1794 out_unlock:
1795         mutex_unlock(&mvm->mutex);
1796         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1797         return ret;
1798 }
1799
1800 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1801                                  struct ieee80211_vif *vif)
1802 {
1803         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1804         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1805
1806         iwl_mvm_prepare_mac_removal(mvm, vif);
1807
1808         mutex_lock(&mvm->mutex);
1809
1810         /* Handle AP stop while in CSA */
1811         if (rcu_access_pointer(mvm->csa_vif) == vif) {
1812                 iwl_mvm_remove_time_event(mvm, mvmvif,
1813                                           &mvmvif->time_event_data);
1814                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1815         }
1816
1817         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1818                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1819                 mvm->csa_tx_block_bcn_timeout = 0;
1820         }
1821
1822         mvmvif->ap_ibss_active = false;
1823         mvm->ap_last_beacon_gp2 = 0;
1824
1825         iwl_mvm_bt_coex_vif_change(mvm);
1826
1827         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1828
1829         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1830         if (vif->p2p && mvm->p2p_device_vif)
1831                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1832
1833         iwl_mvm_update_quotas(mvm, NULL);
1834         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1835         iwl_mvm_binding_remove_vif(mvm, vif);
1836
1837         iwl_mvm_power_update_mac(mvm);
1838
1839         iwl_mvm_mac_ctxt_remove(mvm, vif);
1840
1841         mutex_unlock(&mvm->mutex);
1842 }
1843
1844 static void
1845 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1846                                  struct ieee80211_vif *vif,
1847                                  struct ieee80211_bss_conf *bss_conf,
1848                                  u32 changes)
1849 {
1850         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1851
1852         /* Changes will be applied when the AP/IBSS is started */
1853         if (!mvmvif->ap_ibss_active)
1854                 return;
1855
1856         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1857                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1858             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1859                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1860
1861         /* Need to send a new beacon template to the FW */
1862         if (changes & BSS_CHANGED_BEACON &&
1863             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1864                 IWL_WARN(mvm, "Failed updating beacon data\n");
1865
1866         if (changes & BSS_CHANGED_TXPOWER) {
1867                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1868                                 bss_conf->txpower);
1869                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1870         }
1871
1872 }
1873
1874 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1875                                      struct ieee80211_vif *vif,
1876                                      struct ieee80211_bss_conf *bss_conf,
1877                                      u32 changes)
1878 {
1879         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1880
1881         /*
1882          * iwl_mvm_bss_info_changed_station() might call
1883          * iwl_mvm_protect_session(), which reads directly from
1884          * the device (the system time), so make sure it is available.
1885          */
1886         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1887                 return;
1888
1889         mutex_lock(&mvm->mutex);
1890
1891         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1892                 iwl_mvm_scan_offload_stop(mvm, true);
1893
1894         switch (vif->type) {
1895         case NL80211_IFTYPE_STATION:
1896                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1897                 break;
1898         case NL80211_IFTYPE_AP:
1899         case NL80211_IFTYPE_ADHOC:
1900                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1901                 break;
1902         default:
1903                 /* shouldn't happen */
1904                 WARN_ON_ONCE(1);
1905         }
1906
1907         mutex_unlock(&mvm->mutex);
1908         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1909 }
1910
1911 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1912                                           enum iwl_scan_status scan_type)
1913 {
1914         int ret;
1915         bool wait_for_handlers = false;
1916
1917         mutex_lock(&mvm->mutex);
1918
1919         if (mvm->scan_status != scan_type) {
1920                 ret = 0;
1921                 /* make sure there are no pending notifications */
1922                 wait_for_handlers = true;
1923                 goto out;
1924         }
1925
1926         switch (scan_type) {
1927         case IWL_MVM_SCAN_SCHED:
1928                 ret = iwl_mvm_scan_offload_stop(mvm, true);
1929                 break;
1930         case IWL_MVM_SCAN_OS:
1931                 ret = iwl_mvm_cancel_scan(mvm);
1932                 break;
1933         case IWL_MVM_SCAN_NONE:
1934         default:
1935                 WARN_ON_ONCE(1);
1936                 ret = -EINVAL;
1937                 break;
1938         }
1939         if (ret)
1940                 goto out;
1941
1942         wait_for_handlers = true;
1943 out:
1944         mutex_unlock(&mvm->mutex);
1945
1946         /* make sure we consume the completion notification */
1947         if (wait_for_handlers)
1948                 iwl_mvm_wait_for_async_handlers(mvm);
1949
1950         return ret;
1951 }
1952 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1953                                struct ieee80211_vif *vif,
1954                                struct ieee80211_scan_request *hw_req)
1955 {
1956         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1957         struct cfg80211_scan_request *req = &hw_req->req;
1958         int ret;
1959
1960         if (req->n_channels == 0 ||
1961             req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1962                 return -EINVAL;
1963
1964         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1965                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1966                 if (ret)
1967                         return ret;
1968         }
1969
1970         mutex_lock(&mvm->mutex);
1971
1972         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1973                 ret = -EBUSY;
1974                 goto out;
1975         }
1976
1977         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1978
1979         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
1980                 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
1981         else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1982                 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1983         else
1984                 ret = iwl_mvm_scan_request(mvm, vif, req);
1985
1986         if (ret)
1987                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1988 out:
1989         mutex_unlock(&mvm->mutex);
1990         return ret;
1991 }
1992
1993 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1994                                        struct ieee80211_vif *vif)
1995 {
1996         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1997
1998         mutex_lock(&mvm->mutex);
1999
2000         iwl_mvm_cancel_scan(mvm);
2001
2002         mutex_unlock(&mvm->mutex);
2003 }
2004
2005 static void
2006 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2007                                   struct ieee80211_sta *sta, u16 tids,
2008                                   int num_frames,
2009                                   enum ieee80211_frame_release_type reason,
2010                                   bool more_data)
2011 {
2012         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2013
2014         /* Called when we need to transmit (a) frame(s) from mac80211 */
2015
2016         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2017                                           tids, more_data, false);
2018 }
2019
2020 static void
2021 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2022                                     struct ieee80211_sta *sta, u16 tids,
2023                                     int num_frames,
2024                                     enum ieee80211_frame_release_type reason,
2025                                     bool more_data)
2026 {
2027         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2028
2029         /* Called when we need to transmit (a) frame(s) from agg queue */
2030
2031         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2032                                           tids, more_data, true);
2033 }
2034
2035 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2036                                    struct ieee80211_vif *vif,
2037                                    enum sta_notify_cmd cmd,
2038                                    struct ieee80211_sta *sta)
2039 {
2040         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2041         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2042         int tid;
2043
2044         switch (cmd) {
2045         case STA_NOTIFY_SLEEP:
2046                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2047                         ieee80211_sta_block_awake(hw, sta, true);
2048                 spin_lock_bh(&mvmsta->lock);
2049                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2050                         struct iwl_mvm_tid_data *tid_data;
2051
2052                         tid_data = &mvmsta->tid_data[tid];
2053                         if (tid_data->state != IWL_AGG_ON &&
2054                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2055                                 continue;
2056                         if (iwl_mvm_tid_queued(tid_data) == 0)
2057                                 continue;
2058                         ieee80211_sta_set_buffered(sta, tid, true);
2059                 }
2060                 spin_unlock_bh(&mvmsta->lock);
2061                 /*
2062                  * The fw updates the STA to be asleep. Tx packets on the Tx
2063                  * queues to this station will not be transmitted. The fw will
2064                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2065                  */
2066                 break;
2067         case STA_NOTIFY_AWAKE:
2068                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2069                         break;
2070                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2071                 break;
2072         default:
2073                 break;
2074         }
2075 }
2076
2077 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2078                                        struct ieee80211_vif *vif,
2079                                        struct ieee80211_sta *sta)
2080 {
2081         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2082         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2083
2084         /*
2085          * This is called before mac80211 does RCU synchronisation,
2086          * so here we already invalidate our internal RCU-protected
2087          * station pointer. The rest of the code will thus no longer
2088          * be able to find the station this way, and we don't rely
2089          * on further RCU synchronisation after the sta_state()
2090          * callback deleted the station.
2091          */
2092         mutex_lock(&mvm->mutex);
2093         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2094                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2095                                    ERR_PTR(-ENOENT));
2096         mutex_unlock(&mvm->mutex);
2097 }
2098
2099 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2100                                  struct ieee80211_vif *vif,
2101                                  struct ieee80211_sta *sta,
2102                                  enum ieee80211_sta_state old_state,
2103                                  enum ieee80211_sta_state new_state)
2104 {
2105         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2106         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2107         int ret;
2108
2109         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2110                            sta->addr, old_state, new_state);
2111
2112         /* this would be a mac80211 bug ... but don't crash */
2113         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2114                 return -EINVAL;
2115
2116         /* if a STA is being removed, reuse its ID */
2117         flush_work(&mvm->sta_drained_wk);
2118
2119         mutex_lock(&mvm->mutex);
2120         if (old_state == IEEE80211_STA_NOTEXIST &&
2121             new_state == IEEE80211_STA_NONE) {
2122                 /*
2123                  * Firmware bug - it'll crash if the beacon interval is less
2124                  * than 16. We can't avoid connecting at all, so refuse the
2125                  * station state change, this will cause mac80211 to abandon
2126                  * attempts to connect to this AP, and eventually wpa_s will
2127                  * blacklist the AP...
2128                  */
2129                 if (vif->type == NL80211_IFTYPE_STATION &&
2130                     vif->bss_conf.beacon_int < 16) {
2131                         IWL_ERR(mvm,
2132                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2133                                 sta->addr, vif->bss_conf.beacon_int);
2134                         ret = -EINVAL;
2135                         goto out_unlock;
2136                 }
2137
2138                 if (sta->tdls &&
2139                     (vif->p2p ||
2140                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2141                                                 IWL_MVM_TDLS_STA_COUNT ||
2142                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2143                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2144                         ret = -EBUSY;
2145                         goto out_unlock;
2146                 }
2147
2148                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2149                 if (sta->tdls && ret == 0)
2150                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2151         } else if (old_state == IEEE80211_STA_NONE &&
2152                    new_state == IEEE80211_STA_AUTH) {
2153                 /*
2154                  * EBS may be disabled due to previous failures reported by FW.
2155                  * Reset EBS status here assuming environment has been changed.
2156                  */
2157                 mvm->last_ebs_successful = true;
2158                 ret = 0;
2159         } else if (old_state == IEEE80211_STA_AUTH &&
2160                    new_state == IEEE80211_STA_ASSOC) {
2161                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2162                 if (ret == 0)
2163                         iwl_mvm_rs_rate_init(mvm, sta,
2164                                              mvmvif->phy_ctxt->channel->band,
2165                                              true);
2166         } else if (old_state == IEEE80211_STA_ASSOC &&
2167                    new_state == IEEE80211_STA_AUTHORIZED) {
2168
2169                 /* we don't support TDLS during DCM */
2170                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2171                         iwl_mvm_teardown_tdls_peers(mvm);
2172
2173                 /* enable beacon filtering */
2174                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2175                 ret = 0;
2176         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2177                    new_state == IEEE80211_STA_ASSOC) {
2178                 /* disable beacon filtering */
2179                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2180                 ret = 0;
2181         } else if (old_state == IEEE80211_STA_ASSOC &&
2182                    new_state == IEEE80211_STA_AUTH) {
2183                 ret = 0;
2184         } else if (old_state == IEEE80211_STA_AUTH &&
2185                    new_state == IEEE80211_STA_NONE) {
2186                 ret = 0;
2187         } else if (old_state == IEEE80211_STA_NONE &&
2188                    new_state == IEEE80211_STA_NOTEXIST) {
2189                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2190                 if (sta->tdls)
2191                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2192         } else {
2193                 ret = -EIO;
2194         }
2195  out_unlock:
2196         mutex_unlock(&mvm->mutex);
2197
2198         if (sta->tdls && ret == 0) {
2199                 if (old_state == IEEE80211_STA_NOTEXIST &&
2200                     new_state == IEEE80211_STA_NONE)
2201                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2202                 else if (old_state == IEEE80211_STA_NONE &&
2203                          new_state == IEEE80211_STA_NOTEXIST)
2204                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2205         }
2206
2207         return ret;
2208 }
2209
2210 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2211 {
2212         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2213
2214         mvm->rts_threshold = value;
2215
2216         return 0;
2217 }
2218
2219 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2220                                   struct ieee80211_vif *vif,
2221                                   struct ieee80211_sta *sta, u32 changed)
2222 {
2223         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2224
2225         if (vif->type == NL80211_IFTYPE_STATION &&
2226             changed & IEEE80211_RC_NSS_CHANGED)
2227                 iwl_mvm_sf_update(mvm, vif, false);
2228 }
2229
2230 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2231                                struct ieee80211_vif *vif, u16 ac,
2232                                const struct ieee80211_tx_queue_params *params)
2233 {
2234         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2235         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2236
2237         mvmvif->queue_params[ac] = *params;
2238
2239         /*
2240          * No need to update right away, we'll get BSS_CHANGED_QOS
2241          * The exception is P2P_DEVICE interface which needs immediate update.
2242          */
2243         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2244                 int ret;
2245
2246                 mutex_lock(&mvm->mutex);
2247                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2248                 mutex_unlock(&mvm->mutex);
2249                 return ret;
2250         }
2251         return 0;
2252 }
2253
2254 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2255                                       struct ieee80211_vif *vif)
2256 {
2257         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2258         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2259                            200 + vif->bss_conf.beacon_int);
2260         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2261                                100 + vif->bss_conf.beacon_int);
2262
2263         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2264                 return;
2265
2266         /*
2267          * iwl_mvm_protect_session() reads directly from the device
2268          * (the system time), so make sure it is available.
2269          */
2270         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2271                 return;
2272
2273         mutex_lock(&mvm->mutex);
2274         /* Try really hard to protect the session and hear a beacon */
2275         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2276         mutex_unlock(&mvm->mutex);
2277
2278         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2279 }
2280
2281 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2282                                         struct ieee80211_vif *vif,
2283                                         struct cfg80211_sched_scan_request *req,
2284                                         struct ieee80211_scan_ies *ies)
2285 {
2286         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2287         int ret;
2288
2289         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2290                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2291                 if (ret)
2292                         return ret;
2293         }
2294
2295         mutex_lock(&mvm->mutex);
2296
2297         /* Newest FW fixes sched scan while connected on another interface */
2298         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2299                 if (!vif->bss_conf.idle) {
2300                         ret = -EBUSY;
2301                         goto out;
2302                 }
2303         } else if (!iwl_mvm_is_idle(mvm)) {
2304                 ret = -EBUSY;
2305                 goto out;
2306         }
2307
2308         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2309                 ret = -EBUSY;
2310                 goto out;
2311         }
2312
2313         ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2314         if (ret)
2315                 mvm->scan_status = IWL_MVM_SCAN_NONE;
2316
2317 out:
2318         mutex_unlock(&mvm->mutex);
2319         return ret;
2320 }
2321
2322 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2323                                        struct ieee80211_vif *vif)
2324 {
2325         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2326         int ret;
2327
2328         mutex_lock(&mvm->mutex);
2329         ret = iwl_mvm_scan_offload_stop(mvm, false);
2330         mutex_unlock(&mvm->mutex);
2331         iwl_mvm_wait_for_async_handlers(mvm);
2332
2333         return ret;
2334
2335 }
2336
2337 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2338                                enum set_key_cmd cmd,
2339                                struct ieee80211_vif *vif,
2340                                struct ieee80211_sta *sta,
2341                                struct ieee80211_key_conf *key)
2342 {
2343         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2344         int ret;
2345
2346         if (iwlwifi_mod_params.sw_crypto) {
2347                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2348                 return -EOPNOTSUPP;
2349         }
2350
2351         switch (key->cipher) {
2352         case WLAN_CIPHER_SUITE_TKIP:
2353                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2354                 /* fall-through */
2355         case WLAN_CIPHER_SUITE_CCMP:
2356                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2357                 break;
2358         case WLAN_CIPHER_SUITE_AES_CMAC:
2359                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2360                 break;
2361         case WLAN_CIPHER_SUITE_WEP40:
2362         case WLAN_CIPHER_SUITE_WEP104:
2363                 /* For non-client mode, only use WEP keys for TX as we probably
2364                  * don't have a station yet anyway and would then have to keep
2365                  * track of the keys, linking them to each of the clients/peers
2366                  * as they appear. For now, don't do that, for performance WEP
2367                  * offload doesn't really matter much, but we need it for some
2368                  * other offload features in client mode.
2369                  */
2370                 if (vif->type != NL80211_IFTYPE_STATION)
2371                         return 0;
2372                 break;
2373         default:
2374                 /* currently FW supports only one optional cipher scheme */
2375                 if (hw->n_cipher_schemes &&
2376                     hw->cipher_schemes->cipher == key->cipher)
2377                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2378                 else
2379                         return -EOPNOTSUPP;
2380         }
2381
2382         mutex_lock(&mvm->mutex);
2383
2384         switch (cmd) {
2385         case SET_KEY:
2386                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2387                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2388                         /*
2389                          * GTK on AP interface is a TX-only key, return 0;
2390                          * on IBSS they're per-station and because we're lazy
2391                          * we don't support them for RX, so do the same.
2392                          */
2393                         ret = 0;
2394                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2395                         break;
2396                 }
2397
2398                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2399                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2400                 if (ret) {
2401                         IWL_WARN(mvm, "set key failed\n");
2402                         /*
2403                          * can't add key for RX, but we don't need it
2404                          * in the device for TX so still return 0
2405                          */
2406                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2407                         ret = 0;
2408                 }
2409
2410                 break;
2411         case DISABLE_KEY:
2412                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2413                         ret = 0;
2414                         break;
2415                 }
2416
2417                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2418                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2419                 break;
2420         default:
2421                 ret = -EINVAL;
2422         }
2423
2424         mutex_unlock(&mvm->mutex);
2425         return ret;
2426 }
2427
2428 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2429                                         struct ieee80211_vif *vif,
2430                                         struct ieee80211_key_conf *keyconf,
2431                                         struct ieee80211_sta *sta,
2432                                         u32 iv32, u16 *phase1key)
2433 {
2434         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2435
2436         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2437                 return;
2438
2439         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2440 }
2441
2442
2443 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2444                                struct iwl_rx_packet *pkt, void *data)
2445 {
2446         struct iwl_mvm *mvm =
2447                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2448         struct iwl_hs20_roc_res *resp;
2449         int resp_len = iwl_rx_packet_payload_len(pkt);
2450         struct iwl_mvm_time_event_data *te_data = data;
2451
2452         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2453                 return true;
2454
2455         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2456                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2457                 return true;
2458         }
2459
2460         resp = (void *)pkt->data;
2461
2462         IWL_DEBUG_TE(mvm,
2463                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2464                      resp->status, resp->event_unique_id);
2465
2466         te_data->uid = le32_to_cpu(resp->event_unique_id);
2467         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2468                      te_data->uid);
2469
2470         spin_lock_bh(&mvm->time_event_lock);
2471         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2472         spin_unlock_bh(&mvm->time_event_lock);
2473
2474         return true;
2475 }
2476
2477 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2478 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2479                                     struct ieee80211_channel *channel,
2480                                     struct ieee80211_vif *vif,
2481                                     int duration)
2482 {
2483         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2484         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2485         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2486         static const u8 time_event_response[] = { HOT_SPOT_CMD };
2487         struct iwl_notification_wait wait_time_event;
2488         struct iwl_hs20_roc_req aux_roc_req = {
2489                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2490                 .id_and_color =
2491                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2492                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2493                 /* Set the channel info data */
2494                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2495                         PHY_BAND_24 : PHY_BAND_5,
2496                 .channel_info.channel = channel->hw_value,
2497                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2498                 /* Set the time and duration */
2499                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2500                 .apply_time_max_delay =
2501                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2502                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2503          };
2504
2505         /* Set the node address */
2506         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2507
2508         lockdep_assert_held(&mvm->mutex);
2509
2510         spin_lock_bh(&mvm->time_event_lock);
2511
2512         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2513                 spin_unlock_bh(&mvm->time_event_lock);
2514                 return -EIO;
2515         }
2516
2517         te_data->vif = vif;
2518         te_data->duration = duration;
2519         te_data->id = HOT_SPOT_CMD;
2520
2521         spin_unlock_bh(&mvm->time_event_lock);
2522
2523         /*
2524          * Use a notification wait, which really just processes the
2525          * command response and doesn't wait for anything, in order
2526          * to be able to process the response and get the UID inside
2527          * the RX path. Using CMD_WANT_SKB doesn't work because it
2528          * stores the buffer and then wakes up this thread, by which
2529          * time another notification (that the time event started)
2530          * might already be processed unsuccessfully.
2531          */
2532         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2533                                    time_event_response,
2534                                    ARRAY_SIZE(time_event_response),
2535                                    iwl_mvm_rx_aux_roc, te_data);
2536
2537         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2538                                    &aux_roc_req);
2539
2540         if (res) {
2541                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2542                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2543                 goto out_clear_te;
2544         }
2545
2546         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2547         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2548         /* should never fail */
2549         WARN_ON_ONCE(res);
2550
2551         if (res) {
2552  out_clear_te:
2553                 spin_lock_bh(&mvm->time_event_lock);
2554                 iwl_mvm_te_clear_data(mvm, te_data);
2555                 spin_unlock_bh(&mvm->time_event_lock);
2556         }
2557
2558         return res;
2559 }
2560
2561 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2562                        struct ieee80211_vif *vif,
2563                        struct ieee80211_channel *channel,
2564                        int duration,
2565                        enum ieee80211_roc_type type)
2566 {
2567         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2568         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2569         struct cfg80211_chan_def chandef;
2570         struct iwl_mvm_phy_ctxt *phy_ctxt;
2571         int ret, i;
2572
2573         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2574                            duration, type);
2575
2576         mutex_lock(&mvm->mutex);
2577
2578         switch (vif->type) {
2579         case NL80211_IFTYPE_STATION:
2580                 /* Use aux roc framework (HS20) */
2581                 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2582                                                vif, duration);
2583                 goto out_unlock;
2584         case NL80211_IFTYPE_P2P_DEVICE:
2585                 /* handle below */
2586                 break;
2587         default:
2588                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2589                 ret = -EINVAL;
2590                 goto out_unlock;
2591         }
2592
2593         for (i = 0; i < NUM_PHY_CTX; i++) {
2594                 phy_ctxt = &mvm->phy_ctxts[i];
2595                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2596                         continue;
2597
2598                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2599                         /*
2600                          * Unbind the P2P_DEVICE from the current PHY context,
2601                          * and if the PHY context is not used remove it.
2602                          */
2603                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2604                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2605                                 goto out_unlock;
2606
2607                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2608
2609                         /* Bind the P2P_DEVICE to the current PHY Context */
2610                         mvmvif->phy_ctxt = phy_ctxt;
2611
2612                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2613                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2614                                 goto out_unlock;
2615
2616                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2617                         goto schedule_time_event;
2618                 }
2619         }
2620
2621         /* Need to update the PHY context only if the ROC channel changed */
2622         if (channel == mvmvif->phy_ctxt->channel)
2623                 goto schedule_time_event;
2624
2625         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2626
2627         /*
2628          * Change the PHY context configuration as it is currently referenced
2629          * only by the P2P Device MAC
2630          */
2631         if (mvmvif->phy_ctxt->ref == 1) {
2632                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2633                                                &chandef, 1, 1);
2634                 if (ret)
2635                         goto out_unlock;
2636         } else {
2637                 /*
2638                  * The PHY context is shared with other MACs. Need to remove the
2639                  * P2P Device from the binding, allocate an new PHY context and
2640                  * create a new binding
2641                  */
2642                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2643                 if (!phy_ctxt) {
2644                         ret = -ENOSPC;
2645                         goto out_unlock;
2646                 }
2647
2648                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2649                                                1, 1);
2650                 if (ret) {
2651                         IWL_ERR(mvm, "Failed to change PHY context\n");
2652                         goto out_unlock;
2653                 }
2654
2655                 /* Unbind the P2P_DEVICE from the current PHY context */
2656                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2657                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2658                         goto out_unlock;
2659
2660                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2661
2662                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2663                 mvmvif->phy_ctxt = phy_ctxt;
2664
2665                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2666                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2667                         goto out_unlock;
2668
2669                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2670         }
2671
2672 schedule_time_event:
2673         /* Schedule the time events */
2674         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2675
2676 out_unlock:
2677         mutex_unlock(&mvm->mutex);
2678         IWL_DEBUG_MAC80211(mvm, "leave\n");
2679         return ret;
2680 }
2681
2682 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2683 {
2684         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2685
2686         IWL_DEBUG_MAC80211(mvm, "enter\n");
2687
2688         mutex_lock(&mvm->mutex);
2689         iwl_mvm_stop_roc(mvm);
2690         mutex_unlock(&mvm->mutex);
2691
2692         IWL_DEBUG_MAC80211(mvm, "leave\n");
2693         return 0;
2694 }
2695
2696 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2697                                  struct ieee80211_chanctx_conf *ctx)
2698 {
2699         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2700         struct iwl_mvm_phy_ctxt *phy_ctxt;
2701         int ret;
2702
2703         lockdep_assert_held(&mvm->mutex);
2704
2705         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2706
2707         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2708         if (!phy_ctxt) {
2709                 ret = -ENOSPC;
2710                 goto out;
2711         }
2712
2713         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2714                                        ctx->rx_chains_static,
2715                                        ctx->rx_chains_dynamic);
2716         if (ret) {
2717                 IWL_ERR(mvm, "Failed to add PHY context\n");
2718                 goto out;
2719         }
2720
2721         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2722         *phy_ctxt_id = phy_ctxt->id;
2723 out:
2724         return ret;
2725 }
2726
2727 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2728                                struct ieee80211_chanctx_conf *ctx)
2729 {
2730         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2731         int ret;
2732
2733         mutex_lock(&mvm->mutex);
2734         ret = __iwl_mvm_add_chanctx(mvm, ctx);
2735         mutex_unlock(&mvm->mutex);
2736
2737         return ret;
2738 }
2739
2740 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2741                                      struct ieee80211_chanctx_conf *ctx)
2742 {
2743         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2744         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2745
2746         lockdep_assert_held(&mvm->mutex);
2747
2748         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2749 }
2750
2751 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2752                                    struct ieee80211_chanctx_conf *ctx)
2753 {
2754         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2755
2756         mutex_lock(&mvm->mutex);
2757         __iwl_mvm_remove_chanctx(mvm, ctx);
2758         mutex_unlock(&mvm->mutex);
2759 }
2760
2761 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2762                                    struct ieee80211_chanctx_conf *ctx,
2763                                    u32 changed)
2764 {
2765         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2766         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2767         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2768
2769         if (WARN_ONCE((phy_ctxt->ref > 1) &&
2770                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2771                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2772                                    IEEE80211_CHANCTX_CHANGE_RADAR |
2773                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2774                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
2775                       phy_ctxt->ref, changed))
2776                 return;
2777
2778         mutex_lock(&mvm->mutex);
2779         iwl_mvm_bt_coex_vif_change(mvm);
2780         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2781                                  ctx->rx_chains_static,
2782                                  ctx->rx_chains_dynamic);
2783         mutex_unlock(&mvm->mutex);
2784 }
2785
2786 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2787                                         struct ieee80211_vif *vif,
2788                                         struct ieee80211_chanctx_conf *ctx,
2789                                         bool switching_chanctx)
2790 {
2791         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2792         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2793         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2794         int ret;
2795
2796         lockdep_assert_held(&mvm->mutex);
2797
2798         mvmvif->phy_ctxt = phy_ctxt;
2799
2800         switch (vif->type) {
2801         case NL80211_IFTYPE_AP:
2802                 /* only needed if we're switching chanctx (i.e. during CSA) */
2803                 if (switching_chanctx) {
2804                         mvmvif->ap_ibss_active = true;
2805                         break;
2806                 }
2807         case NL80211_IFTYPE_ADHOC:
2808                 /*
2809                  * The AP binding flow is handled as part of the start_ap flow
2810                  * (in bss_info_changed), similarly for IBSS.
2811                  */
2812                 ret = 0;
2813                 goto out;
2814         case NL80211_IFTYPE_STATION:
2815                 break;
2816         case NL80211_IFTYPE_MONITOR:
2817                 /* always disable PS when a monitor interface is active */
2818                 mvmvif->ps_disabled = true;
2819                 break;
2820         default:
2821                 ret = -EINVAL;
2822                 goto out;
2823         }
2824
2825         ret = iwl_mvm_binding_add_vif(mvm, vif);
2826         if (ret)
2827                 goto out;
2828
2829         /*
2830          * Power state must be updated before quotas,
2831          * otherwise fw will complain.
2832          */
2833         iwl_mvm_power_update_mac(mvm);
2834
2835         /* Setting the quota at this stage is only required for monitor
2836          * interfaces. For the other types, the bss_info changed flow
2837          * will handle quota settings.
2838          */
2839         if (vif->type == NL80211_IFTYPE_MONITOR) {
2840                 mvmvif->monitor_active = true;
2841                 ret = iwl_mvm_update_quotas(mvm, NULL);
2842                 if (ret)
2843                         goto out_remove_binding;
2844         }
2845
2846         /* Handle binding during CSA */
2847         if (vif->type == NL80211_IFTYPE_AP) {
2848                 iwl_mvm_update_quotas(mvm, NULL);
2849                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2850         }
2851
2852         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
2853                 u32 duration = 2 * vif->bss_conf.beacon_int;
2854
2855                 /* iwl_mvm_protect_session() reads directly from the
2856                  * device (the system time), so make sure it is
2857                  * available.
2858                  */
2859                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
2860                 if (ret)
2861                         goto out_remove_binding;
2862
2863                 /* Protect the session to make sure we hear the first
2864                  * beacon on the new channel.
2865                  */
2866                 iwl_mvm_protect_session(mvm, vif, duration, duration,
2867                                         vif->bss_conf.beacon_int / 2,
2868                                         true);
2869
2870                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
2871
2872                 iwl_mvm_update_quotas(mvm, NULL);
2873         }
2874
2875         goto out;
2876
2877 out_remove_binding:
2878         iwl_mvm_binding_remove_vif(mvm, vif);
2879         iwl_mvm_power_update_mac(mvm);
2880 out:
2881         if (ret)
2882                 mvmvif->phy_ctxt = NULL;
2883         return ret;
2884 }
2885 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2886                                       struct ieee80211_vif *vif,
2887                                       struct ieee80211_chanctx_conf *ctx)
2888 {
2889         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2890         int ret;
2891
2892         mutex_lock(&mvm->mutex);
2893         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2894         mutex_unlock(&mvm->mutex);
2895
2896         return ret;
2897 }
2898
2899 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2900                                            struct ieee80211_vif *vif,
2901                                            struct ieee80211_chanctx_conf *ctx,
2902                                            bool switching_chanctx)
2903 {
2904         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2905         struct ieee80211_vif *disabled_vif = NULL;
2906
2907         lockdep_assert_held(&mvm->mutex);
2908
2909         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2910
2911         switch (vif->type) {
2912         case NL80211_IFTYPE_ADHOC:
2913                 goto out;
2914         case NL80211_IFTYPE_MONITOR:
2915                 mvmvif->monitor_active = false;
2916                 mvmvif->ps_disabled = false;
2917                 break;
2918         case NL80211_IFTYPE_AP:
2919                 /* This part is triggered only during CSA */
2920                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
2921                         goto out;
2922
2923                 mvmvif->csa_countdown = false;
2924
2925                 /* Set CS bit on all the stations */
2926                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2927
2928                 /* Save blocked iface, the timeout is set on the next beacon */
2929                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2930
2931                 mvmvif->ap_ibss_active = false;
2932                 break;
2933         case NL80211_IFTYPE_STATION:
2934                 if (!switching_chanctx)
2935                         break;
2936
2937                 disabled_vif = vif;
2938
2939                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2940                 break;
2941         default:
2942                 break;
2943         }
2944
2945         iwl_mvm_update_quotas(mvm, disabled_vif);
2946         iwl_mvm_binding_remove_vif(mvm, vif);
2947
2948 out:
2949         mvmvif->phy_ctxt = NULL;
2950         iwl_mvm_power_update_mac(mvm);
2951 }
2952
2953 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2954                                          struct ieee80211_vif *vif,
2955                                          struct ieee80211_chanctx_conf *ctx)
2956 {
2957         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2958
2959         mutex_lock(&mvm->mutex);
2960         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2961         mutex_unlock(&mvm->mutex);
2962 }
2963
2964 static int
2965 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
2966                                 struct ieee80211_vif_chanctx_switch *vifs)
2967 {
2968         int ret;
2969
2970         mutex_lock(&mvm->mutex);
2971         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2972         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2973
2974         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2975         if (ret) {
2976                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2977                 goto out_reassign;
2978         }
2979
2980         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2981                                            true);
2982         if (ret) {
2983                 IWL_ERR(mvm,
2984                         "failed to assign new_ctx during channel switch\n");
2985                 goto out_remove;
2986         }
2987
2988         /* we don't support TDLS during DCM - can be caused by channel switch */
2989         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2990                 iwl_mvm_teardown_tdls_peers(mvm);
2991
2992         goto out;
2993
2994 out_remove:
2995         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2996
2997 out_reassign:
2998         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
2999                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3000                 goto out_restart;
3001         }
3002
3003         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3004                                          true)) {
3005                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3006                 goto out_restart;
3007         }
3008
3009         goto out;
3010
3011 out_restart:
3012         /* things keep failing, better restart the hw */
3013         iwl_mvm_nic_restart(mvm, false);
3014
3015 out:
3016         mutex_unlock(&mvm->mutex);
3017
3018         return ret;
3019 }
3020
3021 static int
3022 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3023                                     struct ieee80211_vif_chanctx_switch *vifs)
3024 {
3025         int ret;
3026
3027         mutex_lock(&mvm->mutex);
3028         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3029
3030         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3031                                            true);
3032         if (ret) {
3033                 IWL_ERR(mvm,
3034                         "failed to assign new_ctx during channel switch\n");
3035                 goto out_reassign;
3036         }
3037
3038         goto out;
3039
3040 out_reassign:
3041         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3042                                          true)) {
3043                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3044                 goto out_restart;
3045         }
3046
3047         goto out;
3048
3049 out_restart:
3050         /* things keep failing, better restart the hw */
3051         iwl_mvm_nic_restart(mvm, false);
3052
3053 out:
3054         mutex_unlock(&mvm->mutex);
3055
3056         return ret;
3057 }
3058
3059 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3060                                       struct ieee80211_vif_chanctx_switch *vifs,
3061                                       int n_vifs,
3062                                       enum ieee80211_chanctx_switch_mode mode)
3063 {
3064         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3065         int ret;
3066
3067         /* we only support a single-vif right now */
3068         if (n_vifs > 1)
3069                 return -EOPNOTSUPP;
3070
3071         switch (mode) {
3072         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3073                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3074                 break;
3075         case CHANCTX_SWMODE_REASSIGN_VIF:
3076                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3077                 break;
3078         default:
3079                 ret = -EOPNOTSUPP;
3080                 break;
3081         }
3082
3083         return ret;
3084 }
3085
3086 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3087                            struct ieee80211_sta *sta,
3088                            bool set)
3089 {
3090         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3091         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
3092
3093         if (!mvm_sta || !mvm_sta->vif) {
3094                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3095                 return -EINVAL;
3096         }
3097
3098         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3099 }
3100
3101 #ifdef CONFIG_NL80211_TESTMODE
3102 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3103         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3104         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3105         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3106 };
3107
3108 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3109                                       struct ieee80211_vif *vif,
3110                                       void *data, int len)
3111 {
3112         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3113         int err;
3114         u32 noa_duration;
3115
3116         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3117         if (err)
3118                 return err;
3119
3120         if (!tb[IWL_MVM_TM_ATTR_CMD])
3121                 return -EINVAL;
3122
3123         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3124         case IWL_MVM_TM_CMD_SET_NOA:
3125                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3126                     !vif->bss_conf.enable_beacon ||
3127                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3128                         return -EINVAL;
3129
3130                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3131                 if (noa_duration >= vif->bss_conf.beacon_int)
3132                         return -EINVAL;
3133
3134                 mvm->noa_duration = noa_duration;
3135                 mvm->noa_vif = vif;
3136
3137                 return iwl_mvm_update_quotas(mvm, NULL);
3138         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3139                 /* must be associated client vif - ignore authorized */
3140                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3141                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3142                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3143                         return -EINVAL;
3144
3145                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3146                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3147                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3148         }
3149
3150         return -EOPNOTSUPP;
3151 }
3152
3153 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3154                                     struct ieee80211_vif *vif,
3155                                     void *data, int len)
3156 {
3157         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3158         int err;
3159
3160         mutex_lock(&mvm->mutex);
3161         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3162         mutex_unlock(&mvm->mutex);
3163
3164         return err;
3165 }
3166 #endif
3167
3168 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3169                                    struct ieee80211_vif *vif,
3170                                    struct ieee80211_channel_switch *chsw)
3171 {
3172         /* By implementing this operation, we prevent mac80211 from
3173          * starting its own channel switch timer, so that we can call
3174          * ieee80211_chswitch_done() ourselves at the right time
3175          * (which is when the absence time event starts).
3176          */
3177
3178         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3179                            "dummy channel switch op\n");
3180 }
3181
3182 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3183                                       struct ieee80211_vif *vif,
3184                                       struct ieee80211_channel_switch *chsw)
3185 {
3186         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3187         struct ieee80211_vif *csa_vif;
3188         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3189         u32 apply_time;
3190         int ret;
3191
3192         mutex_lock(&mvm->mutex);
3193
3194         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3195                            chsw->chandef.center_freq1);
3196
3197         switch (vif->type) {
3198         case NL80211_IFTYPE_AP:
3199                 csa_vif =
3200                         rcu_dereference_protected(mvm->csa_vif,
3201                                                   lockdep_is_held(&mvm->mutex));
3202                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3203                               "Another CSA is already in progress")) {
3204                         ret = -EBUSY;
3205                         goto out_unlock;
3206                 }
3207
3208                 rcu_assign_pointer(mvm->csa_vif, vif);
3209
3210                 if (WARN_ONCE(mvmvif->csa_countdown,
3211                               "Previous CSA countdown didn't complete")) {
3212                         ret = -EBUSY;
3213                         goto out_unlock;
3214                 }
3215
3216                 break;
3217         case NL80211_IFTYPE_STATION:
3218                 /* Schedule the time event to a bit before beacon 1,
3219                  * to make sure we're in the new channel when the
3220                  * GO/AP arrives.
3221                  */
3222                 apply_time = chsw->device_timestamp +
3223                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3224                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3225
3226                 if (chsw->block_tx)
3227                         iwl_mvm_csa_client_absent(mvm, vif);
3228
3229                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3230                                             apply_time);
3231                 if (mvmvif->bf_data.bf_enabled) {
3232                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3233                         if (ret)
3234                                 goto out_unlock;
3235                 }
3236
3237                 break;
3238         default:
3239                 break;
3240         }
3241
3242         mvmvif->ps_disabled = true;
3243
3244         ret = iwl_mvm_power_update_ps(mvm);
3245         if (ret)
3246                 goto out_unlock;
3247
3248         /* we won't be on this channel any longer */
3249         iwl_mvm_teardown_tdls_peers(mvm);
3250
3251 out_unlock:
3252         mutex_unlock(&mvm->mutex);
3253
3254         return ret;
3255 }
3256
3257 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3258                                        struct ieee80211_vif *vif)
3259 {
3260         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3261         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3262         int ret;
3263
3264         mutex_lock(&mvm->mutex);
3265
3266         if (vif->type == NL80211_IFTYPE_STATION) {
3267                 struct iwl_mvm_sta *mvmsta;
3268
3269                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3270                                                           mvmvif->ap_sta_id);
3271
3272                 if (WARN_ON(!mvmsta)) {
3273                         ret = -EIO;
3274                         goto out_unlock;
3275                 }
3276
3277                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3278
3279                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3280
3281                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3282                 if (ret)
3283                         goto out_unlock;
3284
3285                 iwl_mvm_stop_session_protection(mvm, vif);
3286         }
3287
3288         mvmvif->ps_disabled = false;
3289
3290         ret = iwl_mvm_power_update_ps(mvm);
3291
3292 out_unlock:
3293         mutex_unlock(&mvm->mutex);
3294
3295         return ret;
3296 }
3297
3298 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3299                               struct ieee80211_vif *vif, u32 queues, bool drop)
3300 {
3301         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3302         struct iwl_mvm_vif *mvmvif;
3303         struct iwl_mvm_sta *mvmsta;
3304         struct ieee80211_sta *sta;
3305         int i;
3306         u32 msk = 0;
3307
3308         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3309                 return;
3310
3311         mutex_lock(&mvm->mutex);
3312         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3313
3314         /* flush the AP-station and all TDLS peers */
3315         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3316                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3317                                                 lockdep_is_held(&mvm->mutex));
3318                 if (IS_ERR_OR_NULL(sta))
3319                         continue;
3320
3321                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3322                 if (mvmsta->vif != vif)
3323                         continue;
3324
3325                 /* make sure only TDLS peers or the AP are flushed */
3326                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3327
3328                 msk |= mvmsta->tfd_queue_msk;
3329         }
3330
3331         if (drop) {
3332                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3333                         IWL_ERR(mvm, "flush request fail\n");
3334                 mutex_unlock(&mvm->mutex);
3335         } else {
3336                 mutex_unlock(&mvm->mutex);
3337
3338                 /* this can take a while, and we may need/want other operations
3339                  * to succeed while doing this, so do it without the mutex held
3340                  */
3341                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3342         }
3343 }
3344
3345 const struct ieee80211_ops iwl_mvm_hw_ops = {
3346         .tx = iwl_mvm_mac_tx,
3347         .ampdu_action = iwl_mvm_mac_ampdu_action,
3348         .start = iwl_mvm_mac_start,
3349         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3350         .stop = iwl_mvm_mac_stop,
3351         .add_interface = iwl_mvm_mac_add_interface,
3352         .remove_interface = iwl_mvm_mac_remove_interface,
3353         .config = iwl_mvm_mac_config,
3354         .prepare_multicast = iwl_mvm_prepare_multicast,
3355         .configure_filter = iwl_mvm_configure_filter,
3356         .bss_info_changed = iwl_mvm_bss_info_changed,
3357         .hw_scan = iwl_mvm_mac_hw_scan,
3358         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3359         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3360         .sta_state = iwl_mvm_mac_sta_state,
3361         .sta_notify = iwl_mvm_mac_sta_notify,
3362         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3363         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3364         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3365         .sta_rc_update = iwl_mvm_sta_rc_update,
3366         .conf_tx = iwl_mvm_mac_conf_tx,
3367         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3368         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3369         .flush = iwl_mvm_mac_flush,
3370         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3371         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3372         .set_key = iwl_mvm_mac_set_key,
3373         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3374         .remain_on_channel = iwl_mvm_roc,
3375         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3376         .add_chanctx = iwl_mvm_add_chanctx,
3377         .remove_chanctx = iwl_mvm_remove_chanctx,
3378         .change_chanctx = iwl_mvm_change_chanctx,
3379         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3380         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3381         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3382
3383         .start_ap = iwl_mvm_start_ap_ibss,
3384         .stop_ap = iwl_mvm_stop_ap_ibss,
3385         .join_ibss = iwl_mvm_start_ap_ibss,
3386         .leave_ibss = iwl_mvm_stop_ap_ibss,
3387
3388         .set_tim = iwl_mvm_set_tim,
3389
3390         .channel_switch = iwl_mvm_channel_switch,
3391         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3392         .post_channel_switch = iwl_mvm_post_channel_switch,
3393
3394         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3395         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3396         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3397
3398         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3399
3400 #ifdef CONFIG_PM_SLEEP
3401         /* look at d3.c */
3402         .suspend = iwl_mvm_suspend,
3403         .resume = iwl_mvm_resume,
3404         .set_wakeup = iwl_mvm_set_wakeup,
3405         .set_rekey_data = iwl_mvm_set_rekey_data,
3406 #if IS_ENABLED(CONFIG_IPV6)
3407         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3408 #endif
3409         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3410 #endif
3411 };