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
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  21  * along with this program; if not, write to the Free Software
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  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
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  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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  40  * are met:
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  46  *    the documentation and/or other materials provided with the
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  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  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 #include "iwl-csr.h"
  89
  90 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  91         {
  92                 .max = 1,
  93                 .types = BIT(NL80211_IFTYPE_STATION),
  94         },
  95         {
  96                 .max = 1,
  97                 .types = BIT(NL80211_IFTYPE_AP) |
  98                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  99                         BIT(NL80211_IFTYPE_P2P_GO),
 100         },
 101         {
 102                 .max = 1,
 103                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 104         },
 105 };
 106
 107 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 108         {
 109                 .num_different_channels = 2,
 110                 .max_interfaces = 3,
 111                 .limits = iwl_mvm_limits,
 112                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 113         },
 114 };
 115
 116 #ifdef CONFIG_PM_SLEEP
 117 static const struct nl80211_wowlan_tcp_data_token_feature
 118 iwl_mvm_wowlan_tcp_token_feature = {
 119         .min_len = 0,
 120         .max_len = 255,
 121         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 122 };
 123
 124 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 125         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 126         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 127                             sizeof(struct ethhdr) -
 128                             sizeof(struct iphdr) -
 129                             sizeof(struct tcphdr),
 130         .data_interval_max = 65535, /* __le16 in API */
 131         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 132                             sizeof(struct ethhdr) -
 133                             sizeof(struct iphdr) -
 134                             sizeof(struct tcphdr),
 135         .seq = true,
 136 };
 137 #endif
 138
 139 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 140 /*
 141  * Use the reserved field to indicate magic values.
 142  * these values will only be used internally by the driver,
 143  * and won't make it to the fw (reserved will be 0).
 144  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 145  *      be the vif's ip address. in case there is not a single
 146  *      ip address (0, or more than 1), this attribute will
 147  *      be skipped.
 148  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 149  *      the LSB bytes of the vif's mac address
 150  */
 151 enum {
 152         BC_FILTER_MAGIC_NONE = 0,
 153         BC_FILTER_MAGIC_IP,
 154         BC_FILTER_MAGIC_MAC,
 155 };
 156
 157 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 158         {
 159                 /* arp */
 160                 .discard = 0,
 161                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 162                 .attrs = {
 163                         {
 164                                 /* frame type - arp, hw type - ethernet */
 165                                 .offset_type =
 166                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 167                                 .offset = sizeof(rfc1042_header),
 168                                 .val = cpu_to_be32(0x08060001),
 169                                 .mask = cpu_to_be32(0xffffffff),
 170                         },
 171                         {
 172                                 /* arp dest ip */
 173                                 .offset_type =
 174                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 175                                 .offset = sizeof(rfc1042_header) + 2 +
 176                                           sizeof(struct arphdr) +
 177                                           ETH_ALEN + sizeof(__be32) +
 178                                           ETH_ALEN,
 179                                 .mask = cpu_to_be32(0xffffffff),
 180                                 /* mark it as special field */
 181                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 182                         },
 183                 },
 184         },
 185         {
 186                 /* dhcp offer bcast */
 187                 .discard = 0,
 188                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 189                 .attrs = {
 190                         {
 191                                 /* udp dest port - 68 (bootp client)*/
 192                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 193                                 .offset = offsetof(struct udphdr, dest),
 194                                 .val = cpu_to_be32(0x00440000),
 195                                 .mask = cpu_to_be32(0xffff0000),
 196                         },
 197                         {
 198                                 /* dhcp - lsb bytes of client hw address */
 199                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 200                                 .offset = 38,
 201                                 .mask = cpu_to_be32(0xffffffff),
 202                                 /* mark it as special field */
 203                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 204                         },
 205                 },
 206         },
 207         /* last filter must be empty */
 208         {},
 209 };
 210 #endif
 211
 212 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 213 {
 214         if (!iwl_mvm_is_d0i3_supported(mvm))
 215                 return;
 216
 217         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 218         spin_lock_bh(&mvm->refs_lock);
 219         mvm->refs[ref_type]++;
 220         spin_unlock_bh(&mvm->refs_lock);
 221         iwl_trans_ref(mvm->trans);
 222 }
 223
 224 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 225 {
 226         if (!iwl_mvm_is_d0i3_supported(mvm))
 227                 return;
 228
 229         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 230         spin_lock_bh(&mvm->refs_lock);
 231         WARN_ON(!mvm->refs[ref_type]--);
 232         spin_unlock_bh(&mvm->refs_lock);
 233         iwl_trans_unref(mvm->trans);
 234 }
 235
 236 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 237                                      enum iwl_mvm_ref_type except_ref)
 238 {
 239         int i, j;
 240
 241         if (!iwl_mvm_is_d0i3_supported(mvm))
 242                 return;
 243
 244         spin_lock_bh(&mvm->refs_lock);
 245         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 246                 if (except_ref == i || !mvm->refs[i])
 247                         continue;
 248
 249                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 250                               i, mvm->refs[i]);
 251                 for (j = 0; j < mvm->refs[i]; j++)
 252                         iwl_trans_unref(mvm->trans);
 253                 mvm->refs[i] = 0;
 254         }
 255         spin_unlock_bh(&mvm->refs_lock);
 256 }
 257
 258 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 259 {
 260         int i;
 261         bool taken = false;
 262
 263         if (!iwl_mvm_is_d0i3_supported(mvm))
 264                 return true;
 265
 266         spin_lock_bh(&mvm->refs_lock);
 267         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 268                 if (mvm->refs[i]) {
 269                         taken = true;
 270                         break;
 271                 }
 272         }
 273         spin_unlock_bh(&mvm->refs_lock);
 274
 275         return taken;
 276 }
 277
 278 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 279 {
 280         iwl_mvm_ref(mvm, ref_type);
 281
 282         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 283                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 284                                 HZ)) {
 285                 WARN_ON_ONCE(1);
 286                 iwl_mvm_unref(mvm, ref_type);
 287                 return -EIO;
 288         }
 289
 290         return 0;
 291 }
 292
 293 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 294 {
 295         int i;
 296
 297         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 298         for (i = 0; i < NUM_PHY_CTX; i++) {
 299                 mvm->phy_ctxts[i].id = i;
 300                 mvm->phy_ctxts[i].ref = 0;
 301         }
 302 }
 303
 304 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 305 {
 306         struct ieee80211_hw *hw = mvm->hw;
 307         int num_mac, ret, i;
 308
 309         /* Tell mac80211 our characteristics */
 310         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 311                     IEEE80211_HW_SPECTRUM_MGMT |
 312                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 313                     IEEE80211_HW_QUEUE_CONTROL |
 314                     IEEE80211_HW_WANT_MONITOR_VIF |
 315                     IEEE80211_HW_SUPPORTS_PS |
 316                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 317                     IEEE80211_HW_AMPDU_AGGREGATION |
 318                     IEEE80211_HW_TIMING_BEACON_ONLY |
 319                     IEEE80211_HW_CONNECTION_MONITOR |
 320                     IEEE80211_HW_CHANCTX_STA_CSA |
 321                     IEEE80211_HW_SUPPORTS_CLONED_SKBS;
 322
 323         hw->queues = mvm->first_agg_queue;
 324         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 325         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 326                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 327         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 328                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 329         hw->rate_control_algorithm = "iwl-mvm-rs";
 330         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 331         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 332
 333         /*
 334          * Enable 11w if advertised by firmware and software crypto
 335          * is not enabled (as the firmware will interpret some mgmt
 336          * packets, so enabling it with software crypto isn't safe)
 337          */
 338         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 339             !iwlwifi_mod_params.sw_crypto)
 340                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 341
 342         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
 343             mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
 344                 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
 345                 hw->wiphy->features |=
 346                         NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 347                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 348         }
 349
 350         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 351         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 352         hw->chanctx_data_size = sizeof(u16);
 353
 354         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 355                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 356                 BIT(NL80211_IFTYPE_AP) |
 357                 BIT(NL80211_IFTYPE_P2P_GO) |
 358                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 359                 BIT(NL80211_IFTYPE_ADHOC);
 360
 361         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 362         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 363                                        REGULATORY_DISABLE_BEACON_HINTS;
 364
 365         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 366                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 367
 368         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 369
 370         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 371         hw->wiphy->n_iface_combinations =
 372                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 373
 374         hw->wiphy->max_remain_on_channel_duration = 10000;
 375         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 376         /* we can compensate an offset of up to 3 channels = 15 MHz */
 377         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 378
 379         /* Extract MAC address */
 380         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 381         hw->wiphy->addresses = mvm->addresses;
 382         hw->wiphy->n_addresses = 1;
 383
 384         /* Extract additional MAC addresses if available */
 385         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 386                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 387
 388         for (i = 1; i < num_mac; i++) {
 389                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 390                        ETH_ALEN);
 391                 mvm->addresses[i].addr[5]++;
 392                 hw->wiphy->n_addresses++;
 393         }
 394
 395         iwl_mvm_reset_phy_ctxts(mvm);
 396
 397         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
 398
 399         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 400
 401         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 402                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 403                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 404         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 405                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 406                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 407
 408                 if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_BEAMFORMER)
 409                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 410                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 411         }
 412
 413         hw->wiphy->hw_version = mvm->trans->hw_id;
 414
 415         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 416                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 417         else
 418                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 419
 420         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
 421                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 422                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 423                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 424                 /* we create the 802.11 header and zero length SSID IE. */
 425                 hw->wiphy->max_sched_scan_ie_len =
 426                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 427         }
 428
 429         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 430                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 431                                NL80211_FEATURE_P2P_GO_OPPPS |
 432                                NL80211_FEATURE_DYNAMIC_SMPS |
 433                                NL80211_FEATURE_STATIC_SMPS |
 434                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 435
 436         if (mvm->fw->ucode_capa.capa[0] &
 437             IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
 438                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 439         if (mvm->fw->ucode_capa.capa[0] &
 440             IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
 441                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 442
 443         if (mvm->fw->ucode_capa.capa[0] &
 444             IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
 445                 hw->wiphy->features |=
 446                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 447
 448         if (mvm->fw->ucode_capa.capa[0] &
 449             IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
 450                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 451
 452         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 453
 454         /* currently FW API supports only one optional cipher scheme */
 455         if (mvm->fw->cs[0].cipher) {
 456                 mvm->hw->n_cipher_schemes = 1;
 457                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 458         }
 459
 460 #ifdef CONFIG_PM_SLEEP
 461         if (iwl_mvm_is_d0i3_supported(mvm) &&
 462             device_can_wakeup(mvm->trans->dev)) {
 463                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 464                 hw->wiphy->wowlan = &mvm->wowlan;
 465         }
 466
 467         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 468             mvm->trans->ops->d3_suspend &&
 469             mvm->trans->ops->d3_resume &&
 470             device_can_wakeup(mvm->trans->dev)) {
 471                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 472                                      WIPHY_WOWLAN_DISCONNECT |
 473                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 474                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 475                                      WIPHY_WOWLAN_NET_DETECT;
 476                 if (!iwlwifi_mod_params.sw_crypto)
 477                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 478                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 479                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 480
 481                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 482                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 483                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 484                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 485                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 486                 hw->wiphy->wowlan = &mvm->wowlan;
 487         }
 488 #endif
 489
 490 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 491         /* assign default bcast filtering configuration */
 492         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 493 #endif
 494
 495         ret = iwl_mvm_leds_init(mvm);
 496         if (ret)
 497                 return ret;
 498
 499         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
 500                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 501                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 502         }
 503
 504         if (mvm->fw->ucode_capa.capa[0] &
 505             IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
 506                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 507                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 508         }
 509
 510         ret = ieee80211_register_hw(mvm->hw);
 511         if (ret)
 512                 iwl_mvm_leds_exit(mvm);
 513
 514         return ret;
 515 }
 516
 517 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 518                              struct ieee80211_sta *sta,
 519                              struct sk_buff *skb)
 520 {
 521         struct iwl_mvm_sta *mvmsta;
 522         bool defer = false;
 523
 524         /*
 525          * double check the IN_D0I3 flag both before and after
 526          * taking the spinlock, in order to prevent taking
 527          * the spinlock when not needed.
 528          */
 529         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 530                 return false;
 531
 532         spin_lock(&mvm->d0i3_tx_lock);
 533         /*
 534          * testing the flag again ensures the skb dequeue
 535          * loop (on d0i3 exit) hasn't run yet.
 536          */
 537         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 538                 goto out;
 539
 540         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 541         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 542             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 543                 goto out;
 544
 545         __skb_queue_tail(&mvm->d0i3_tx, skb);
 546         ieee80211_stop_queues(mvm->hw);
 547
 548         /* trigger wakeup */
 549         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 550         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 551
 552         defer = true;
 553 out:
 554         spin_unlock(&mvm->d0i3_tx_lock);
 555         return defer;
 556 }
 557
 558 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 559                            struct ieee80211_tx_control *control,
 560                            struct sk_buff *skb)
 561 {
 562         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 563         struct ieee80211_sta *sta = control->sta;
 564         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 565         struct ieee80211_hdr *hdr = (void *)skb->data;
 566
 567         if (iwl_mvm_is_radio_killed(mvm)) {
 568                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 569                 goto drop;
 570         }
 571
 572         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 573             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 574             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 575                 goto drop;
 576
 577         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 578         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 579                      ieee80211_is_mgmt(hdr->frame_control) &&
 580                      !ieee80211_is_deauth(hdr->frame_control) &&
 581                      !ieee80211_is_disassoc(hdr->frame_control) &&
 582                      !ieee80211_is_action(hdr->frame_control)))
 583                 sta = NULL;
 584
 585         if (sta) {
 586                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 587                         return;
 588                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 589                         goto drop;
 590                 return;
 591         }
 592
 593         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 594                 goto drop;
 595         return;
 596  drop:
 597         ieee80211_free_txskb(hw, skb);
 598 }
 599
 600 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 601 {
 602         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 603                 return false;
 604         return true;
 605 }
 606
 607 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 608 {
 609         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 610                 return false;
 611         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 612                 return true;
 613
 614         /* enabled by default */
 615         return true;
 616 }
 617
 618 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 619                                     struct ieee80211_vif *vif,
 620                                     enum ieee80211_ampdu_mlme_action action,
 621                                     struct ieee80211_sta *sta, u16 tid,
 622                                     u16 *ssn, u8 buf_size)
 623 {
 624         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 625         int ret;
 626         bool tx_agg_ref = false;
 627
 628         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 629                      sta->addr, tid, action);
 630
 631         if (!(mvm->nvm_data->sku_cap_11n_enable))
 632                 return -EACCES;
 633
 634         /* return from D0i3 before starting a new Tx aggregation */
 635         switch (action) {
 636         case IEEE80211_AMPDU_TX_START:
 637         case IEEE80211_AMPDU_TX_STOP_CONT:
 638         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 639         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 640         case IEEE80211_AMPDU_TX_OPERATIONAL:
 641                 /*
 642                  * for tx start, wait synchronously until D0i3 exit to
 643                  * get the correct sequence number for the tid.
 644                  * additionally, some other ampdu actions use direct
 645                  * target access, which is not handled automatically
 646                  * by the trans layer (unlike commands), so wait for
 647                  * d0i3 exit in these cases as well.
 648                  */
 649                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 650                 if (ret)
 651                         return ret;
 652
 653                 tx_agg_ref = true;
 654                 break;
 655         default:
 656                 break;
 657         }
 658
 659         mutex_lock(&mvm->mutex);
 660
 661         switch (action) {
 662         case IEEE80211_AMPDU_RX_START:
 663                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 664                         ret = -EINVAL;
 665                         break;
 666                 }
 667                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 668                 break;
 669         case IEEE80211_AMPDU_RX_STOP:
 670                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 671                 break;
 672         case IEEE80211_AMPDU_TX_START:
 673                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 674                         ret = -EINVAL;
 675                         break;
 676                 }
 677                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 678                 break;
 679         case IEEE80211_AMPDU_TX_STOP_CONT:
 680                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 681                 break;
 682         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 683         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 684                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 685                 break;
 686         case IEEE80211_AMPDU_TX_OPERATIONAL:
 687                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 688                 break;
 689         default:
 690                 WARN_ON_ONCE(1);
 691                 ret = -EINVAL;
 692                 break;
 693         }
 694         mutex_unlock(&mvm->mutex);
 695
 696         /*
 697          * If the tid is marked as started, we won't use it for offloaded
 698          * traffic on the next D0i3 entry. It's safe to unref.
 699          */
 700         if (tx_agg_ref)
 701                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 702
 703         return ret;
 704 }
 705
 706 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 707                                      struct ieee80211_vif *vif)
 708 {
 709         struct iwl_mvm *mvm = data;
 710         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 711
 712         mvmvif->uploaded = false;
 713         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 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 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
 767                                struct iwl_fw_error_dump_data **dump_data)
 768 {
 769         struct iwl_fw_error_dump_fifo *fifo_hdr;
 770         u32 *fifo_data;
 771         u32 fifo_len;
 772         unsigned long flags;
 773         int i, j;
 774
 775         if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
 776                 return;
 777
 778         /* Pull RXF data from all RXFs */
 779         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
 780                 /*
 781                  * Keep aside the additional offset that might be needed for
 782                  * next RXF
 783                  */
 784                 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
 785
 786                 fifo_hdr = (void *)(*dump_data)->data;
 787                 fifo_data = (void *)fifo_hdr->data;
 788                 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
 789
 790                 /* No need to try to read the data if the length is 0 */
 791                 if (fifo_len == 0)
 792                         continue;
 793
 794                 /* Add a TLV for the RXF */
 795                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 796                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
 797
 798                 fifo_hdr->fifo_num = cpu_to_le32(i);
 799                 fifo_hdr->available_bytes =
 800                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 801                                                         RXF_RD_D_SPACE +
 802                                                         offset_diff));
 803                 fifo_hdr->wr_ptr =
 804                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 805                                                         RXF_RD_WR_PTR +
 806                                                         offset_diff));
 807                 fifo_hdr->rd_ptr =
 808                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 809                                                         RXF_RD_RD_PTR +
 810                                                         offset_diff));
 811                 fifo_hdr->fence_ptr =
 812                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 813                                                         RXF_RD_FENCE_PTR +
 814                                                         offset_diff));
 815                 fifo_hdr->fence_mode =
 816                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 817                                                         RXF_SET_FENCE_MODE +
 818                                                         offset_diff));
 819
 820                 /* Lock fence */
 821                 iwl_trans_write_prph(mvm->trans,
 822                                      RXF_SET_FENCE_MODE + offset_diff, 0x1);
 823                 /* Set fence pointer to the same place like WR pointer */
 824                 iwl_trans_write_prph(mvm->trans,
 825                                      RXF_LD_WR2FENCE + offset_diff, 0x1);
 826                 /* Set fence offset */
 827                 iwl_trans_write_prph(mvm->trans,
 828                                      RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
 829                                      0x0);
 830
 831                 /* Read FIFO */
 832                 fifo_len /= sizeof(u32); /* Size in DWORDS */
 833                 for (j = 0; j < fifo_len; j++)
 834                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
 835                                                          RXF_FIFO_RD_FENCE_INC +
 836                                                          offset_diff);
 837                 *dump_data = iwl_fw_error_next_data(*dump_data);
 838         }
 839
 840         /* Pull TXF data from all TXFs */
 841         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
 842                 /* Mark the number of TXF we're pulling now */
 843                 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
 844
 845                 fifo_hdr = (void *)(*dump_data)->data;
 846                 fifo_data = (void *)fifo_hdr->data;
 847                 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
 848
 849                 /* No need to try to read the data if the length is 0 */
 850                 if (fifo_len == 0)
 851                         continue;
 852
 853                 /* Add a TLV for the FIFO */
 854                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
 855                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
 856
 857                 fifo_hdr->fifo_num = cpu_to_le32(i);
 858                 fifo_hdr->available_bytes =
 859                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 860                                                         TXF_FIFO_ITEM_CNT));
 861                 fifo_hdr->wr_ptr =
 862                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 863                                                         TXF_WR_PTR));
 864                 fifo_hdr->rd_ptr =
 865                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 866                                                         TXF_RD_PTR));
 867                 fifo_hdr->fence_ptr =
 868                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 869                                                         TXF_FENCE_PTR));
 870                 fifo_hdr->fence_mode =
 871                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 872                                                         TXF_LOCK_FENCE));
 873
 874                 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
 875                 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
 876                                      TXF_WR_PTR);
 877
 878                 /* Dummy-read to advance the read pointer to the head */
 879                 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
 880
 881                 /* Read FIFO */
 882                 fifo_len /= sizeof(u32); /* Size in DWORDS */
 883                 for (j = 0; j < fifo_len; j++)
 884                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
 885                                                           TXF_READ_MODIFY_DATA);
 886                 *dump_data = iwl_fw_error_next_data(*dump_data);
 887         }
 888
 889         iwl_trans_release_nic_access(mvm->trans, &flags);
 890 }
 891
 892 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 893 {
 894         struct iwl_fw_error_dump_file *dump_file;
 895         struct iwl_fw_error_dump_data *dump_data;
 896         struct iwl_fw_error_dump_info *dump_info;
 897         struct iwl_fw_error_dump_mem *dump_mem;
 898         struct iwl_mvm_dump_ptrs *fw_error_dump;
 899         u32 sram_len, sram_ofs;
 900         u32 file_len, fifo_data_len = 0;
 901         u32 smem_len = mvm->cfg->smem_len;
 902         u32 sram2_len = mvm->cfg->dccm2_len;
 903
 904         lockdep_assert_held(&mvm->mutex);
 905
 906         /* W/A for 8000 HW family A-step */
 907         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
 908             CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP) {
 909                 if (smem_len)
 910                         smem_len = 0x38000;
 911
 912                 if (sram2_len)
 913                         sram2_len = 0x10000;
 914         }
 915
 916         fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
 917         if (!fw_error_dump)
 918                 return;
 919
 920         /* SRAM - include stack CCM if driver knows the values for it */
 921         if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
 922                 const struct fw_img *img;
 923
 924                 img = &mvm->fw->img[mvm->cur_ucode];
 925                 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 926                 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 927         } else {
 928                 sram_ofs = mvm->cfg->dccm_offset;
 929                 sram_len = mvm->cfg->dccm_len;
 930         }
 931
 932         /* reading RXF/TXF sizes */
 933         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
 934                 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
 935                 int i;
 936
 937                 fifo_data_len = 0;
 938
 939                 /* Count RXF size */
 940                 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
 941                         if (!mem_cfg->rxfifo_size[i])
 942                                 continue;
 943
 944                         /* Add header info */
 945                         fifo_data_len += mem_cfg->rxfifo_size[i] +
 946                                          sizeof(*dump_data) +
 947                                          sizeof(struct iwl_fw_error_dump_fifo);
 948                 }
 949
 950                 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
 951                         if (!mem_cfg->txfifo_size[i])
 952                                 continue;
 953
 954                         /* Add header info */
 955                         fifo_data_len += mem_cfg->txfifo_size[i] +
 956                                          sizeof(*dump_data) +
 957                                          sizeof(struct iwl_fw_error_dump_fifo);
 958                 }
 959         }
 960
 961         file_len = sizeof(*dump_file) +
 962                    sizeof(*dump_data) * 2 +
 963                    sram_len + sizeof(*dump_mem) +
 964                    fifo_data_len +
 965                    sizeof(*dump_info);
 966
 967         /* Make room for the SMEM, if it exists */
 968         if (smem_len)
 969                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
 970
 971         /* Make room for the secondary SRAM, if it exists */
 972         if (sram2_len)
 973                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
 974
 975         dump_file = vzalloc(file_len);
 976         if (!dump_file) {
 977                 kfree(fw_error_dump);
 978                 return;
 979         }
 980
 981         fw_error_dump->op_mode_ptr = dump_file;
 982
 983         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
 984         dump_data = (void *)dump_file->data;
 985
 986         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
 987         dump_data->len = cpu_to_le32(sizeof(*dump_info));
 988         dump_info = (void *) dump_data->data;
 989         dump_info->device_family =
 990                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
 991                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
 992                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
 993         dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
 994         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
 995                sizeof(dump_info->fw_human_readable));
 996         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
 997                 sizeof(dump_info->dev_human_readable));
 998         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
 999                 sizeof(dump_info->bus_human_readable));
1000
1001         dump_data = iwl_fw_error_next_data(dump_data);
1002         /* We only dump the FIFOs if the FW is in error state */
1003         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1004                 iwl_mvm_dump_fifos(mvm, &dump_data);
1005
1006         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1007         dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1008         dump_mem = (void *)dump_data->data;
1009         dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1010         dump_mem->offset = cpu_to_le32(sram_ofs);
1011         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1012                                  sram_len);
1013
1014         if (smem_len) {
1015                 dump_data = iwl_fw_error_next_data(dump_data);
1016                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1017                 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1018                 dump_mem = (void *)dump_data->data;
1019                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1020                 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1021                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1022                                          dump_mem->data, smem_len);
1023         }
1024
1025         if (sram2_len) {
1026                 dump_data = iwl_fw_error_next_data(dump_data);
1027                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1028                 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1029                 dump_mem = (void *)dump_data->data;
1030                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1031                 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1032                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1033                                          dump_mem->data, sram2_len);
1034         }
1035
1036         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1037         fw_error_dump->op_mode_len = file_len;
1038         if (fw_error_dump->trans_ptr)
1039                 file_len += fw_error_dump->trans_ptr->len;
1040         dump_file->file_len = cpu_to_le32(file_len);
1041
1042         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1043                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1044 }
1045
1046 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1047 {
1048         /* clear the D3 reconfig, we only need it to avoid dumping a
1049          * firmware coredump on reconfiguration, we shouldn't do that
1050          * on D3->D0 transition
1051          */
1052         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
1053                 iwl_mvm_fw_error_dump(mvm);
1054
1055         /* cleanup all stale references (scan, roc), but keep the
1056          * ucode_down ref until reconfig is complete
1057          */
1058         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1059
1060         iwl_trans_stop_device(mvm->trans);
1061
1062         mvm->scan_status = IWL_MVM_SCAN_NONE;
1063         mvm->ps_disabled = false;
1064         mvm->calibrating = false;
1065
1066         /* just in case one was running */
1067         ieee80211_remain_on_channel_expired(mvm->hw);
1068
1069         ieee80211_iterate_active_interfaces_atomic(
1070                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1071                 iwl_mvm_cleanup_iterator, mvm);
1072
1073         mvm->p2p_device_vif = NULL;
1074         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1075
1076         iwl_mvm_reset_phy_ctxts(mvm);
1077         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1078         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1079         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1080         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1081         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1082         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1083         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1084         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1085         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1086
1087         ieee80211_wake_queues(mvm->hw);
1088
1089         /* clear any stale d0i3 state */
1090         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1091
1092         mvm->vif_count = 0;
1093         mvm->rx_ba_sessions = 0;
1094 }
1095
1096 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1097 {
1098         int ret;
1099
1100         lockdep_assert_held(&mvm->mutex);
1101
1102         /* Clean up some internal and mac80211 state on restart */
1103         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1104                 iwl_mvm_restart_cleanup(mvm);
1105
1106         ret = iwl_mvm_up(mvm);
1107
1108         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1109                 /* Something went wrong - we need to finish some cleanup
1110                  * that normally iwl_mvm_mac_restart_complete() below
1111                  * would do.
1112                  */
1113                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1114                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1115         }
1116
1117         return ret;
1118 }
1119
1120 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1121 {
1122         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1123         int ret;
1124
1125         /* Some hw restart cleanups must not hold the mutex */
1126         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1127                 /*
1128                  * Make sure we are out of d0i3. This is needed
1129                  * to make sure the reference accounting is correct
1130                  * (and there is no stale d0i3_exit_work).
1131                  */
1132                 wait_event_timeout(mvm->d0i3_exit_waitq,
1133                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1134                                              &mvm->status),
1135                                    HZ);
1136         }
1137
1138         mutex_lock(&mvm->mutex);
1139         ret = __iwl_mvm_mac_start(mvm);
1140         mutex_unlock(&mvm->mutex);
1141
1142         return ret;
1143 }
1144
1145 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1146 {
1147         int ret;
1148
1149         mutex_lock(&mvm->mutex);
1150
1151         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1152         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1153         ret = iwl_mvm_update_quotas(mvm, NULL);
1154         if (ret)
1155                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1156                         ret);
1157
1158         /* allow transport/FW low power modes */
1159         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1160
1161         /*
1162          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1163          * of packets the FW sent out, so we must reconnect.
1164          */
1165         iwl_mvm_teardown_tdls_peers(mvm);
1166
1167         mutex_unlock(&mvm->mutex);
1168 }
1169
1170 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1171 {
1172         bool exit_now;
1173
1174         if (!iwl_mvm_is_d0i3_supported(mvm))
1175                 return;
1176
1177         mutex_lock(&mvm->d0i3_suspend_mutex);
1178         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1179         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1180                                         &mvm->d0i3_suspend_flags);
1181         mutex_unlock(&mvm->d0i3_suspend_mutex);
1182
1183         if (exit_now) {
1184                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1185                 _iwl_mvm_exit_d0i3(mvm);
1186         }
1187
1188         if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1189                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1190                                         !test_bit(IWL_MVM_STATUS_IN_D0I3,
1191                                                   &mvm->status),
1192                                         HZ))
1193                         WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1194 }
1195
1196 static void
1197 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1198                               enum ieee80211_reconfig_type reconfig_type)
1199 {
1200         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1201
1202         switch (reconfig_type) {
1203         case IEEE80211_RECONFIG_TYPE_RESTART:
1204                 iwl_mvm_restart_complete(mvm);
1205                 break;
1206         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1207                 iwl_mvm_resume_complete(mvm);
1208                 break;
1209         }
1210 }
1211
1212 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1213 {
1214         lockdep_assert_held(&mvm->mutex);
1215
1216         /*
1217          * Disallow low power states when the FW is down by taking
1218          * the UCODE_DOWN ref. in case of ongoing hw restart the
1219          * ref is already taken, so don't take it again.
1220          */
1221         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1222                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1223
1224         /* async_handlers_wk is now blocked */
1225
1226         /*
1227          * The work item could be running or queued if the
1228          * ROC time event stops just as we get here.
1229          */
1230         cancel_work_sync(&mvm->roc_done_wk);
1231
1232         iwl_trans_stop_device(mvm->trans);
1233
1234         iwl_mvm_async_handlers_purge(mvm);
1235         /* async_handlers_list is empty and will stay empty: HW is stopped */
1236
1237         /* the fw is stopped, the aux sta is dead: clean up driver state */
1238         iwl_mvm_del_aux_sta(mvm);
1239
1240         /*
1241          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1242          * won't be called in this case).
1243          */
1244         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1245
1246         mvm->ucode_loaded = false;
1247 }
1248
1249 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1250 {
1251         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1252
1253         flush_work(&mvm->d0i3_exit_work);
1254         flush_work(&mvm->async_handlers_wk);
1255         flush_work(&mvm->fw_error_dump_wk);
1256
1257         mutex_lock(&mvm->mutex);
1258         __iwl_mvm_mac_stop(mvm);
1259         mutex_unlock(&mvm->mutex);
1260
1261         /*
1262          * The worker might have been waiting for the mutex, let it run and
1263          * discover that its list is now empty.
1264          */
1265         cancel_work_sync(&mvm->async_handlers_wk);
1266 }
1267
1268 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1269 {
1270         u16 i;
1271
1272         lockdep_assert_held(&mvm->mutex);
1273
1274         for (i = 0; i < NUM_PHY_CTX; i++)
1275                 if (!mvm->phy_ctxts[i].ref)
1276                         return &mvm->phy_ctxts[i];
1277
1278         IWL_ERR(mvm, "No available PHY context\n");
1279         return NULL;
1280 }
1281
1282 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1283                                 s8 tx_power)
1284 {
1285         /* FW is in charge of regulatory enforcement */
1286         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1287                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1288                 .pwr_restriction = cpu_to_le16(tx_power),
1289         };
1290
1291         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1292                                     sizeof(reduce_txpwr_cmd),
1293                                     &reduce_txpwr_cmd);
1294 }
1295
1296 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1297                                      struct ieee80211_vif *vif)
1298 {
1299         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1300         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1301         int ret;
1302
1303         /*
1304          * make sure D0i3 exit is completed, otherwise a target access
1305          * during tx queue configuration could be done when still in
1306          * D0i3 state.
1307          */
1308         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1309         if (ret)
1310                 return ret;
1311
1312         /*
1313          * Not much to do here. The stack will not allow interface
1314          * types or combinations that we didn't advertise, so we
1315          * don't really have to check the types.
1316          */
1317
1318         mutex_lock(&mvm->mutex);
1319
1320         /* Allocate resources for the MAC context, and add it to the fw  */
1321         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1322         if (ret)
1323                 goto out_unlock;
1324
1325         /* Counting number of interfaces is needed for legacy PM */
1326         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1327                 mvm->vif_count++;
1328
1329         /*
1330          * The AP binding flow can be done only after the beacon
1331          * template is configured (which happens only in the mac80211
1332          * start_ap() flow), and adding the broadcast station can happen
1333          * only after the binding.
1334          * In addition, since modifying the MAC before adding a bcast
1335          * station is not allowed by the FW, delay the adding of MAC context to
1336          * the point where we can also add the bcast station.
1337          * In short: there's not much we can do at this point, other than
1338          * allocating resources :)
1339          */
1340         if (vif->type == NL80211_IFTYPE_AP ||
1341             vif->type == NL80211_IFTYPE_ADHOC) {
1342                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1343                 if (ret) {
1344                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1345                         goto out_release;
1346                 }
1347
1348                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1349                 goto out_unlock;
1350         }
1351
1352         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1353         if (ret)
1354                 goto out_release;
1355
1356         ret = iwl_mvm_power_update_mac(mvm);
1357         if (ret)
1358                 goto out_remove_mac;
1359
1360         /* beacon filtering */
1361         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1362         if (ret)
1363                 goto out_remove_mac;
1364
1365         if (!mvm->bf_allowed_vif &&
1366             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1367                 mvm->bf_allowed_vif = mvmvif;
1368                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1369                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1370         }
1371
1372         /*
1373          * P2P_DEVICE interface does not have a channel context assigned to it,
1374          * so a dedicated PHY context is allocated to it and the corresponding
1375          * MAC context is bound to it at this stage.
1376          */
1377         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1378
1379                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1380                 if (!mvmvif->phy_ctxt) {
1381                         ret = -ENOSPC;
1382                         goto out_free_bf;
1383                 }
1384
1385                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1386                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1387                 if (ret)
1388                         goto out_unref_phy;
1389
1390                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1391                 if (ret)
1392                         goto out_unbind;
1393
1394                 /* Save a pointer to p2p device vif, so it can later be used to
1395                  * update the p2p device MAC when a GO is started/stopped */
1396                 mvm->p2p_device_vif = vif;
1397         }
1398
1399         iwl_mvm_vif_dbgfs_register(mvm, vif);
1400         goto out_unlock;
1401
1402  out_unbind:
1403         iwl_mvm_binding_remove_vif(mvm, vif);
1404  out_unref_phy:
1405         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1406  out_free_bf:
1407         if (mvm->bf_allowed_vif == mvmvif) {
1408                 mvm->bf_allowed_vif = NULL;
1409                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1410                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1411         }
1412  out_remove_mac:
1413         mvmvif->phy_ctxt = NULL;
1414         iwl_mvm_mac_ctxt_remove(mvm, vif);
1415  out_release:
1416         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1417                 mvm->vif_count--;
1418
1419         iwl_mvm_mac_ctxt_release(mvm, vif);
1420  out_unlock:
1421         mutex_unlock(&mvm->mutex);
1422
1423         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1424
1425         return ret;
1426 }
1427
1428 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1429                                         struct ieee80211_vif *vif)
1430 {
1431         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1432
1433         if (tfd_msk) {
1434                 mutex_lock(&mvm->mutex);
1435                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1436                 mutex_unlock(&mvm->mutex);
1437         }
1438
1439         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1440                 /*
1441                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1442                  * We assume here that all the packets sent to the OFFCHANNEL
1443                  * queue are sent in ROC session.
1444                  */
1445                 flush_work(&mvm->roc_done_wk);
1446         } else {
1447                 /*
1448                  * By now, all the AC queues are empty. The AGG queues are
1449                  * empty too. We already got all the Tx responses for all the
1450                  * packets in the queues. The drain work can have been
1451                  * triggered. Flush it.
1452                  */
1453                 flush_work(&mvm->sta_drained_wk);
1454         }
1455 }
1456
1457 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1458                                          struct ieee80211_vif *vif)
1459 {
1460         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1461         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1462
1463         iwl_mvm_prepare_mac_removal(mvm, vif);
1464
1465         mutex_lock(&mvm->mutex);
1466
1467         if (mvm->bf_allowed_vif == mvmvif) {
1468                 mvm->bf_allowed_vif = NULL;
1469                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1470                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1471         }
1472
1473         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1474
1475         /*
1476          * For AP/GO interface, the tear down of the resources allocated to the
1477          * interface is be handled as part of the stop_ap flow.
1478          */
1479         if (vif->type == NL80211_IFTYPE_AP ||
1480             vif->type == NL80211_IFTYPE_ADHOC) {
1481 #ifdef CONFIG_NL80211_TESTMODE
1482                 if (vif == mvm->noa_vif) {
1483                         mvm->noa_vif = NULL;
1484                         mvm->noa_duration = 0;
1485                 }
1486 #endif
1487                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1488                 goto out_release;
1489         }
1490
1491         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1492                 mvm->p2p_device_vif = NULL;
1493                 iwl_mvm_rm_bcast_sta(mvm, vif);
1494                 iwl_mvm_binding_remove_vif(mvm, vif);
1495                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1496                 mvmvif->phy_ctxt = NULL;
1497         }
1498
1499         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1500                 mvm->vif_count--;
1501
1502         iwl_mvm_power_update_mac(mvm);
1503         iwl_mvm_mac_ctxt_remove(mvm, vif);
1504
1505 out_release:
1506         iwl_mvm_mac_ctxt_release(mvm, vif);
1507         mutex_unlock(&mvm->mutex);
1508 }
1509
1510 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1511 {
1512         return 0;
1513 }
1514
1515 struct iwl_mvm_mc_iter_data {
1516         struct iwl_mvm *mvm;
1517         int port_id;
1518 };
1519
1520 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1521                                       struct ieee80211_vif *vif)
1522 {
1523         struct iwl_mvm_mc_iter_data *data = _data;
1524         struct iwl_mvm *mvm = data->mvm;
1525         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1526         int ret, len;
1527
1528         /* if we don't have free ports, mcast frames will be dropped */
1529         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1530                 return;
1531
1532         if (vif->type != NL80211_IFTYPE_STATION ||
1533             !vif->bss_conf.assoc)
1534                 return;
1535
1536         cmd->port_id = data->port_id++;
1537         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1538         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1539
1540         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1541         if (ret)
1542                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1543 }
1544
1545 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1546 {
1547         struct iwl_mvm_mc_iter_data iter_data = {
1548                 .mvm = mvm,
1549         };
1550
1551         lockdep_assert_held(&mvm->mutex);
1552
1553         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1554                 return;
1555
1556         ieee80211_iterate_active_interfaces_atomic(
1557                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1558                 iwl_mvm_mc_iface_iterator, &iter_data);
1559 }
1560
1561 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1562                                      struct netdev_hw_addr_list *mc_list)
1563 {
1564         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1565         struct iwl_mcast_filter_cmd *cmd;
1566         struct netdev_hw_addr *addr;
1567         int addr_count;
1568         bool pass_all;
1569         int len;
1570
1571         addr_count = netdev_hw_addr_list_count(mc_list);
1572         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1573                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1574         if (pass_all)
1575                 addr_count = 0;
1576
1577         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1578         cmd = kzalloc(len, GFP_ATOMIC);
1579         if (!cmd)
1580                 return 0;
1581
1582         if (pass_all) {
1583                 cmd->pass_all = 1;
1584                 return (u64)(unsigned long)cmd;
1585         }
1586
1587         netdev_hw_addr_list_for_each(addr, mc_list) {
1588                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1589                                    cmd->count, addr->addr);
1590                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1591                        addr->addr, ETH_ALEN);
1592                 cmd->count++;
1593         }
1594
1595         return (u64)(unsigned long)cmd;
1596 }
1597
1598 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1599                                      unsigned int changed_flags,
1600                                      unsigned int *total_flags,
1601                                      u64 multicast)
1602 {
1603         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1604         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1605
1606         mutex_lock(&mvm->mutex);
1607
1608         /* replace previous configuration */
1609         kfree(mvm->mcast_filter_cmd);
1610         mvm->mcast_filter_cmd = cmd;
1611
1612         if (!cmd)
1613                 goto out;
1614
1615         iwl_mvm_recalc_multicast(mvm);
1616 out:
1617         mutex_unlock(&mvm->mutex);
1618         *total_flags = 0;
1619 }
1620
1621 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1622 struct iwl_bcast_iter_data {
1623         struct iwl_mvm *mvm;
1624         struct iwl_bcast_filter_cmd *cmd;
1625         u8 current_filter;
1626 };
1627
1628 static void
1629 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1630                          const struct iwl_fw_bcast_filter *in_filter,
1631                          struct iwl_fw_bcast_filter *out_filter)
1632 {
1633         struct iwl_fw_bcast_filter_attr *attr;
1634         int i;
1635
1636         memcpy(out_filter, in_filter, sizeof(*out_filter));
1637
1638         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1639                 attr = &out_filter->attrs[i];
1640
1641                 if (!attr->mask)
1642                         break;
1643
1644                 switch (attr->reserved1) {
1645                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1646                         if (vif->bss_conf.arp_addr_cnt != 1) {
1647                                 attr->mask = 0;
1648                                 continue;
1649                         }
1650
1651                         attr->val = vif->bss_conf.arp_addr_list[0];
1652                         break;
1653                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1654                         attr->val = *(__be32 *)&vif->addr[2];
1655                         break;
1656                 default:
1657                         break;
1658                 }
1659                 attr->reserved1 = 0;
1660                 out_filter->num_attrs++;
1661         }
1662 }
1663
1664 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1665                                           struct ieee80211_vif *vif)
1666 {
1667         struct iwl_bcast_iter_data *data = _data;
1668         struct iwl_mvm *mvm = data->mvm;
1669         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1670         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1671         struct iwl_fw_bcast_mac *bcast_mac;
1672         int i;
1673
1674         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1675                 return;
1676
1677         bcast_mac = &cmd->macs[mvmvif->id];
1678
1679         /*
1680          * enable filtering only for associated stations, but not for P2P
1681          * Clients
1682          */
1683         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1684             !vif->bss_conf.assoc)
1685                 return;
1686
1687         bcast_mac->default_discard = 1;
1688
1689         /* copy all configured filters */
1690         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1691                 /*
1692                  * Make sure we don't exceed our filters limit.
1693                  * if there is still a valid filter to be configured,
1694                  * be on the safe side and just allow bcast for this mac.
1695                  */
1696                 if (WARN_ON_ONCE(data->current_filter >=
1697                                  ARRAY_SIZE(cmd->filters))) {
1698                         bcast_mac->default_discard = 0;
1699                         bcast_mac->attached_filters = 0;
1700                         break;
1701                 }
1702
1703                 iwl_mvm_set_bcast_filter(vif,
1704                                          &mvm->bcast_filters[i],
1705                                          &cmd->filters[data->current_filter]);
1706
1707                 /* skip current filter if it contains no attributes */
1708                 if (!cmd->filters[data->current_filter].num_attrs)
1709                         continue;
1710
1711                 /* attach the filter to current mac */
1712                 bcast_mac->attached_filters |=
1713                                 cpu_to_le16(BIT(data->current_filter));
1714
1715                 data->current_filter++;
1716         }
1717 }
1718
1719 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1720                                     struct iwl_bcast_filter_cmd *cmd)
1721 {
1722         struct iwl_bcast_iter_data iter_data = {
1723                 .mvm = mvm,
1724                 .cmd = cmd,
1725         };
1726
1727         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1728                 return false;
1729
1730         memset(cmd, 0, sizeof(*cmd));
1731         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1732         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1733
1734 #ifdef CONFIG_IWLWIFI_DEBUGFS
1735         /* use debugfs filters/macs if override is configured */
1736         if (mvm->dbgfs_bcast_filtering.override) {
1737                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1738                        sizeof(cmd->filters));
1739                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1740                        sizeof(cmd->macs));
1741                 return true;
1742         }
1743 #endif
1744
1745         /* if no filters are configured, do nothing */
1746         if (!mvm->bcast_filters)
1747                 return false;
1748
1749         /* configure and attach these filters for each associated sta vif */
1750         ieee80211_iterate_active_interfaces(
1751                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1752                 iwl_mvm_bcast_filter_iterator, &iter_data);
1753
1754         return true;
1755 }
1756 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1757                                           struct ieee80211_vif *vif)
1758 {
1759         struct iwl_bcast_filter_cmd cmd;
1760
1761         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1762                 return 0;
1763
1764         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1765                 return 0;
1766
1767         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1768                                     sizeof(cmd), &cmd);
1769 }
1770 #else
1771 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1772                                                  struct ieee80211_vif *vif)
1773 {
1774         return 0;
1775 }
1776 #endif
1777
1778 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1779                                              struct ieee80211_vif *vif,
1780                                              struct ieee80211_bss_conf *bss_conf,
1781                                              u32 changes)
1782 {
1783         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1784         int ret;
1785
1786         /*
1787          * Re-calculate the tsf id, as the master-slave relations depend on the
1788          * beacon interval, which was not known when the station interface was
1789          * added.
1790          */
1791         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1792                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1793
1794         /*
1795          * If we're not associated yet, take the (new) BSSID before associating
1796          * so the firmware knows. If we're already associated, then use the old
1797          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1798          * branch for disassociation below.
1799          */
1800         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1801                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1802
1803         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1804         if (ret)
1805                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1806
1807         /* after sending it once, adopt mac80211 data */
1808         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1809         mvmvif->associated = bss_conf->assoc;
1810
1811         if (changes & BSS_CHANGED_ASSOC) {
1812                 if (bss_conf->assoc) {
1813                         /* add quota for this interface */
1814                         ret = iwl_mvm_update_quotas(mvm, NULL);
1815                         if (ret) {
1816                                 IWL_ERR(mvm, "failed to update quotas\n");
1817                                 return;
1818                         }
1819
1820                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1821                                      &mvm->status)) {
1822                                 /*
1823                                  * If we're restarting then the firmware will
1824                                  * obviously have lost synchronisation with
1825                                  * the AP. It will attempt to synchronise by
1826                                  * itself, but we can make it more reliable by
1827                                  * scheduling a session protection time event.
1828                                  *
1829                                  * The firmware needs to receive a beacon to
1830                                  * catch up with synchronisation, use 110% of
1831                                  * the beacon interval.
1832                                  *
1833                                  * Set a large maximum delay to allow for more
1834                                  * than a single interface.
1835                                  */
1836                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1837                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1838                                                         5 * dur, false);
1839                         }
1840
1841                         iwl_mvm_sf_update(mvm, vif, false);
1842                         iwl_mvm_power_vif_assoc(mvm, vif);
1843                         if (vif->p2p) {
1844                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1845                                 iwl_mvm_update_smps(mvm, vif,
1846                                                     IWL_MVM_SMPS_REQ_PROT,
1847                                                     IEEE80211_SMPS_DYNAMIC);
1848                         }
1849                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1850                         /*
1851                          * If update fails - SF might be running in associated
1852                          * mode while disassociated - which is forbidden.
1853                          */
1854                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1855                                   "Failed to update SF upon disassociation\n");
1856
1857                         /* remove AP station now that the MAC is unassoc */
1858                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1859                         if (ret)
1860                                 IWL_ERR(mvm, "failed to remove AP station\n");
1861
1862                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1863                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1864                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1865                         /* remove quota for this interface */
1866                         ret = iwl_mvm_update_quotas(mvm, NULL);
1867                         if (ret)
1868                                 IWL_ERR(mvm, "failed to update quotas\n");
1869
1870                         if (vif->p2p)
1871                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1872
1873                         /* this will take the cleared BSSID from bss_conf */
1874                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1875                         if (ret)
1876                                 IWL_ERR(mvm,
1877                                         "failed to update MAC %pM (clear after unassoc)\n",
1878                                         vif->addr);
1879                 }
1880
1881                 iwl_mvm_recalc_multicast(mvm);
1882                 iwl_mvm_configure_bcast_filter(mvm, vif);
1883
1884                 /* reset rssi values */
1885                 mvmvif->bf_data.ave_beacon_signal = 0;
1886
1887                 iwl_mvm_bt_coex_vif_change(mvm);
1888                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1889                                     IEEE80211_SMPS_AUTOMATIC);
1890         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1891                 /*
1892                  * We received a beacon _after_ association so
1893                  * remove the session protection.
1894                  */
1895                 iwl_mvm_remove_time_event(mvm, mvmvif,
1896                                           &mvmvif->time_event_data);
1897         }
1898
1899         if (changes & BSS_CHANGED_BEACON_INFO) {
1900                 iwl_mvm_sf_update(mvm, vif, false);
1901                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1902         }
1903
1904         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1905                 ret = iwl_mvm_power_update_mac(mvm);
1906                 if (ret)
1907                         IWL_ERR(mvm, "failed to update power mode\n");
1908         }
1909
1910         if (changes & BSS_CHANGED_TXPOWER) {
1911                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1912                                 bss_conf->txpower);
1913                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1914         }
1915
1916         if (changes & BSS_CHANGED_CQM) {
1917                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1918                 /* reset cqm events tracking */
1919                 mvmvif->bf_data.last_cqm_event = 0;
1920                 if (mvmvif->bf_data.bf_enabled) {
1921                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1922                         if (ret)
1923                                 IWL_ERR(mvm,
1924                                         "failed to update CQM thresholds\n");
1925                 }
1926         }
1927
1928         if (changes & BSS_CHANGED_ARP_FILTER) {
1929                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1930                 iwl_mvm_configure_bcast_filter(mvm, vif);
1931         }
1932 }
1933
1934 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1935                                  struct ieee80211_vif *vif)
1936 {
1937         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1938         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1939         int ret;
1940
1941         /*
1942          * iwl_mvm_mac_ctxt_add() might read directly from the device
1943          * (the system time), so make sure it is available.
1944          */
1945         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1946         if (ret)
1947                 return ret;
1948
1949         mutex_lock(&mvm->mutex);
1950
1951         /* Send the beacon template */
1952         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1953         if (ret)
1954                 goto out_unlock;
1955
1956         /*
1957          * Re-calculate the tsf id, as the master-slave relations depend on the
1958          * beacon interval, which was not known when the AP interface was added.
1959          */
1960         if (vif->type == NL80211_IFTYPE_AP)
1961                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1962
1963         /* Add the mac context */
1964         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1965         if (ret)
1966                 goto out_unlock;
1967
1968         /* Perform the binding */
1969         ret = iwl_mvm_binding_add_vif(mvm, vif);
1970         if (ret)
1971                 goto out_remove;
1972
1973         /* Send the bcast station. At this stage the TBTT and DTIM time events
1974          * are added and applied to the scheduler */
1975         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1976         if (ret)
1977                 goto out_unbind;
1978
1979         /* must be set before quota calculations */
1980         mvmvif->ap_ibss_active = true;
1981
1982         /* power updated needs to be done before quotas */
1983         iwl_mvm_power_update_mac(mvm);
1984
1985         ret = iwl_mvm_update_quotas(mvm, NULL);
1986         if (ret)
1987                 goto out_quota_failed;
1988
1989         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1990         if (vif->p2p && mvm->p2p_device_vif)
1991                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1992
1993         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1994
1995         iwl_mvm_bt_coex_vif_change(mvm);
1996
1997         /* we don't support TDLS during DCM */
1998         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1999                 iwl_mvm_teardown_tdls_peers(mvm);
2000
2001         mutex_unlock(&mvm->mutex);
2002         return 0;
2003
2004 out_quota_failed:
2005         iwl_mvm_power_update_mac(mvm);
2006         mvmvif->ap_ibss_active = false;
2007         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2008 out_unbind:
2009         iwl_mvm_binding_remove_vif(mvm, vif);
2010 out_remove:
2011         iwl_mvm_mac_ctxt_remove(mvm, vif);
2012 out_unlock:
2013         mutex_unlock(&mvm->mutex);
2014         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2015         return ret;
2016 }
2017
2018 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2019                                  struct ieee80211_vif *vif)
2020 {
2021         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2022         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2023
2024         iwl_mvm_prepare_mac_removal(mvm, vif);
2025
2026         mutex_lock(&mvm->mutex);
2027
2028         /* Handle AP stop while in CSA */
2029         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2030                 iwl_mvm_remove_time_event(mvm, mvmvif,
2031                                           &mvmvif->time_event_data);
2032                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2033         }
2034
2035         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2036                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2037                 mvm->csa_tx_block_bcn_timeout = 0;
2038         }
2039
2040         mvmvif->ap_ibss_active = false;
2041         mvm->ap_last_beacon_gp2 = 0;
2042
2043         iwl_mvm_bt_coex_vif_change(mvm);
2044
2045         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2046
2047         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2048         if (vif->p2p && mvm->p2p_device_vif)
2049                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2050
2051         iwl_mvm_update_quotas(mvm, NULL);
2052         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2053         iwl_mvm_binding_remove_vif(mvm, vif);
2054
2055         iwl_mvm_power_update_mac(mvm);
2056
2057         iwl_mvm_mac_ctxt_remove(mvm, vif);
2058
2059         mutex_unlock(&mvm->mutex);
2060 }
2061
2062 static void
2063 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2064                                  struct ieee80211_vif *vif,
2065                                  struct ieee80211_bss_conf *bss_conf,
2066                                  u32 changes)
2067 {
2068         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2069
2070         /* Changes will be applied when the AP/IBSS is started */
2071         if (!mvmvif->ap_ibss_active)
2072                 return;
2073
2074         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2075                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2076             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2077                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2078
2079         /* Need to send a new beacon template to the FW */
2080         if (changes & BSS_CHANGED_BEACON &&
2081             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2082                 IWL_WARN(mvm, "Failed updating beacon data\n");
2083
2084         if (changes & BSS_CHANGED_TXPOWER) {
2085                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2086                                 bss_conf->txpower);
2087                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2088         }
2089
2090 }
2091
2092 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2093                                      struct ieee80211_vif *vif,
2094                                      struct ieee80211_bss_conf *bss_conf,
2095                                      u32 changes)
2096 {
2097         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2098
2099         /*
2100          * iwl_mvm_bss_info_changed_station() might call
2101          * iwl_mvm_protect_session(), which reads directly from
2102          * the device (the system time), so make sure it is available.
2103          */
2104         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2105                 return;
2106
2107         mutex_lock(&mvm->mutex);
2108
2109         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2110                 iwl_mvm_scan_offload_stop(mvm, true);
2111
2112         switch (vif->type) {
2113         case NL80211_IFTYPE_STATION:
2114                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2115                 break;
2116         case NL80211_IFTYPE_AP:
2117         case NL80211_IFTYPE_ADHOC:
2118                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2119                 break;
2120         default:
2121                 /* shouldn't happen */
2122                 WARN_ON_ONCE(1);
2123         }
2124
2125         mutex_unlock(&mvm->mutex);
2126         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2127 }
2128
2129 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2130                                           enum iwl_scan_status scan_type)
2131 {
2132         int ret;
2133         bool wait_for_handlers = false;
2134
2135         mutex_lock(&mvm->mutex);
2136
2137         if (mvm->scan_status != scan_type) {
2138                 ret = 0;
2139                 /* make sure there are no pending notifications */
2140                 wait_for_handlers = true;
2141                 goto out;
2142         }
2143
2144         switch (scan_type) {
2145         case IWL_MVM_SCAN_SCHED:
2146                 ret = iwl_mvm_scan_offload_stop(mvm, true);
2147                 break;
2148         case IWL_MVM_SCAN_OS:
2149                 ret = iwl_mvm_cancel_scan(mvm);
2150                 break;
2151         case IWL_MVM_SCAN_NONE:
2152         default:
2153                 WARN_ON_ONCE(1);
2154                 ret = -EINVAL;
2155                 break;
2156         }
2157         if (ret)
2158                 goto out;
2159
2160         wait_for_handlers = true;
2161 out:
2162         mutex_unlock(&mvm->mutex);
2163
2164         /* make sure we consume the completion notification */
2165         if (wait_for_handlers)
2166                 iwl_mvm_wait_for_async_handlers(mvm);
2167
2168         return ret;
2169 }
2170 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2171                                struct ieee80211_vif *vif,
2172                                struct ieee80211_scan_request *hw_req)
2173 {
2174         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2175         struct cfg80211_scan_request *req = &hw_req->req;
2176         int ret;
2177
2178         if (req->n_channels == 0 ||
2179             req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
2180                 return -EINVAL;
2181
2182         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2183                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2184                 if (ret)
2185                         return ret;
2186         }
2187
2188         mutex_lock(&mvm->mutex);
2189
2190         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2191                 ret = -EBUSY;
2192                 goto out;
2193         }
2194
2195         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2196
2197         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
2198                 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
2199         else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2200                 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
2201         else
2202                 ret = iwl_mvm_scan_request(mvm, vif, req);
2203
2204         if (ret)
2205                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2206 out:
2207         mutex_unlock(&mvm->mutex);
2208         return ret;
2209 }
2210
2211 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2212                                        struct ieee80211_vif *vif)
2213 {
2214         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2215
2216         mutex_lock(&mvm->mutex);
2217
2218         iwl_mvm_cancel_scan(mvm);
2219
2220         mutex_unlock(&mvm->mutex);
2221 }
2222
2223 static void
2224 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2225                                   struct ieee80211_sta *sta, u16 tids,
2226                                   int num_frames,
2227                                   enum ieee80211_frame_release_type reason,
2228                                   bool more_data)
2229 {
2230         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2231
2232         /* Called when we need to transmit (a) frame(s) from mac80211 */
2233
2234         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2235                                           tids, more_data, false);
2236 }
2237
2238 static void
2239 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2240                                     struct ieee80211_sta *sta, u16 tids,
2241                                     int num_frames,
2242                                     enum ieee80211_frame_release_type reason,
2243                                     bool more_data)
2244 {
2245         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2246
2247         /* Called when we need to transmit (a) frame(s) from agg queue */
2248
2249         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2250                                           tids, more_data, true);
2251 }
2252
2253 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2254                                    struct ieee80211_vif *vif,
2255                                    enum sta_notify_cmd cmd,
2256                                    struct ieee80211_sta *sta)
2257 {
2258         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2259         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2260         int tid;
2261
2262         switch (cmd) {
2263         case STA_NOTIFY_SLEEP:
2264                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2265                         ieee80211_sta_block_awake(hw, sta, true);
2266                 spin_lock_bh(&mvmsta->lock);
2267                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2268                         struct iwl_mvm_tid_data *tid_data;
2269
2270                         tid_data = &mvmsta->tid_data[tid];
2271                         if (tid_data->state != IWL_AGG_ON &&
2272                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2273                                 continue;
2274                         if (iwl_mvm_tid_queued(tid_data) == 0)
2275                                 continue;
2276                         ieee80211_sta_set_buffered(sta, tid, true);
2277                 }
2278                 spin_unlock_bh(&mvmsta->lock);
2279                 /*
2280                  * The fw updates the STA to be asleep. Tx packets on the Tx
2281                  * queues to this station will not be transmitted. The fw will
2282                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2283                  */
2284                 break;
2285         case STA_NOTIFY_AWAKE:
2286                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2287                         break;
2288                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2289                 break;
2290         default:
2291                 break;
2292         }
2293 }
2294
2295 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2296                                        struct ieee80211_vif *vif,
2297                                        struct ieee80211_sta *sta)
2298 {
2299         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2300         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2301
2302         /*
2303          * This is called before mac80211 does RCU synchronisation,
2304          * so here we already invalidate our internal RCU-protected
2305          * station pointer. The rest of the code will thus no longer
2306          * be able to find the station this way, and we don't rely
2307          * on further RCU synchronisation after the sta_state()
2308          * callback deleted the station.
2309          */
2310         mutex_lock(&mvm->mutex);
2311         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2312                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2313                                    ERR_PTR(-ENOENT));
2314         mutex_unlock(&mvm->mutex);
2315 }
2316
2317 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2318                                 const u8 *bssid)
2319 {
2320         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2321                 return;
2322
2323         if (iwlwifi_mod_params.uapsd_disable) {
2324                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2325                 return;
2326         }
2327
2328         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2329 }
2330
2331 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2332                                  struct ieee80211_vif *vif,
2333                                  struct ieee80211_sta *sta,
2334                                  enum ieee80211_sta_state old_state,
2335                                  enum ieee80211_sta_state new_state)
2336 {
2337         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2338         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2339         int ret;
2340
2341         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2342                            sta->addr, old_state, new_state);
2343
2344         /* this would be a mac80211 bug ... but don't crash */
2345         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2346                 return -EINVAL;
2347
2348         /* if a STA is being removed, reuse its ID */
2349         flush_work(&mvm->sta_drained_wk);
2350
2351         mutex_lock(&mvm->mutex);
2352         if (old_state == IEEE80211_STA_NOTEXIST &&
2353             new_state == IEEE80211_STA_NONE) {
2354                 /*
2355                  * Firmware bug - it'll crash if the beacon interval is less
2356                  * than 16. We can't avoid connecting at all, so refuse the
2357                  * station state change, this will cause mac80211 to abandon
2358                  * attempts to connect to this AP, and eventually wpa_s will
2359                  * blacklist the AP...
2360                  */
2361                 if (vif->type == NL80211_IFTYPE_STATION &&
2362                     vif->bss_conf.beacon_int < 16) {
2363                         IWL_ERR(mvm,
2364                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2365                                 sta->addr, vif->bss_conf.beacon_int);
2366                         ret = -EINVAL;
2367                         goto out_unlock;
2368                 }
2369
2370                 if (sta->tdls &&
2371                     (vif->p2p ||
2372                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2373                                                 IWL_MVM_TDLS_STA_COUNT ||
2374                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2375                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2376                         ret = -EBUSY;
2377                         goto out_unlock;
2378                 }
2379
2380                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2381                 if (sta->tdls && ret == 0)
2382                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2383         } else if (old_state == IEEE80211_STA_NONE &&
2384                    new_state == IEEE80211_STA_AUTH) {
2385                 /*
2386                  * EBS may be disabled due to previous failures reported by FW.
2387                  * Reset EBS status here assuming environment has been changed.
2388                  */
2389                 mvm->last_ebs_successful = true;
2390                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2391                 ret = 0;
2392         } else if (old_state == IEEE80211_STA_AUTH &&
2393                    new_state == IEEE80211_STA_ASSOC) {
2394                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2395                 if (ret == 0)
2396                         iwl_mvm_rs_rate_init(mvm, sta,
2397                                              mvmvif->phy_ctxt->channel->band,
2398                                              true);
2399         } else if (old_state == IEEE80211_STA_ASSOC &&
2400                    new_state == IEEE80211_STA_AUTHORIZED) {
2401
2402                 /* we don't support TDLS during DCM */
2403                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2404                         iwl_mvm_teardown_tdls_peers(mvm);
2405
2406                 /* enable beacon filtering */
2407                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2408                 ret = 0;
2409         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2410                    new_state == IEEE80211_STA_ASSOC) {
2411                 /* disable beacon filtering */
2412                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2413                 ret = 0;
2414         } else if (old_state == IEEE80211_STA_ASSOC &&
2415                    new_state == IEEE80211_STA_AUTH) {
2416                 ret = 0;
2417         } else if (old_state == IEEE80211_STA_AUTH &&
2418                    new_state == IEEE80211_STA_NONE) {
2419                 ret = 0;
2420         } else if (old_state == IEEE80211_STA_NONE &&
2421                    new_state == IEEE80211_STA_NOTEXIST) {
2422                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2423                 if (sta->tdls)
2424                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2425         } else {
2426                 ret = -EIO;
2427         }
2428  out_unlock:
2429         mutex_unlock(&mvm->mutex);
2430
2431         if (sta->tdls && ret == 0) {
2432                 if (old_state == IEEE80211_STA_NOTEXIST &&
2433                     new_state == IEEE80211_STA_NONE)
2434                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2435                 else if (old_state == IEEE80211_STA_NONE &&
2436                          new_state == IEEE80211_STA_NOTEXIST)
2437                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2438         }
2439
2440         return ret;
2441 }
2442
2443 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2444 {
2445         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2446
2447         mvm->rts_threshold = value;
2448
2449         return 0;
2450 }
2451
2452 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2453                                   struct ieee80211_vif *vif,
2454                                   struct ieee80211_sta *sta, u32 changed)
2455 {
2456         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2457
2458         if (vif->type == NL80211_IFTYPE_STATION &&
2459             changed & IEEE80211_RC_NSS_CHANGED)
2460                 iwl_mvm_sf_update(mvm, vif, false);
2461 }
2462
2463 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2464                                struct ieee80211_vif *vif, u16 ac,
2465                                const struct ieee80211_tx_queue_params *params)
2466 {
2467         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2468         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2469
2470         mvmvif->queue_params[ac] = *params;
2471
2472         /*
2473          * No need to update right away, we'll get BSS_CHANGED_QOS
2474          * The exception is P2P_DEVICE interface which needs immediate update.
2475          */
2476         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2477                 int ret;
2478
2479                 mutex_lock(&mvm->mutex);
2480                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2481                 mutex_unlock(&mvm->mutex);
2482                 return ret;
2483         }
2484         return 0;
2485 }
2486
2487 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2488                                       struct ieee80211_vif *vif)
2489 {
2490         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2491         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2492                            200 + vif->bss_conf.beacon_int);
2493         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2494                                100 + vif->bss_conf.beacon_int);
2495
2496         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2497                 return;
2498
2499         /*
2500          * iwl_mvm_protect_session() reads directly from the device
2501          * (the system time), so make sure it is available.
2502          */
2503         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2504                 return;
2505
2506         mutex_lock(&mvm->mutex);
2507         /* Try really hard to protect the session and hear a beacon */
2508         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2509         mutex_unlock(&mvm->mutex);
2510
2511         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2512 }
2513
2514 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2515                                         struct ieee80211_vif *vif,
2516                                         struct cfg80211_sched_scan_request *req,
2517                                         struct ieee80211_scan_ies *ies)
2518 {
2519         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2520         int ret;
2521
2522         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2523                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2524                 if (ret)
2525                         return ret;
2526         }
2527
2528         mutex_lock(&mvm->mutex);
2529
2530         /* Newest FW fixes sched scan while connected on another interface */
2531         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2532                 if (!vif->bss_conf.idle) {
2533                         ret = -EBUSY;
2534                         goto out;
2535                 }
2536         } else if (!iwl_mvm_is_idle(mvm)) {
2537                 ret = -EBUSY;
2538                 goto out;
2539         }
2540
2541         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2542                 ret = -EBUSY;
2543                 goto out;
2544         }
2545
2546         ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2547         if (ret)
2548                 mvm->scan_status = IWL_MVM_SCAN_NONE;
2549
2550 out:
2551         mutex_unlock(&mvm->mutex);
2552         return ret;
2553 }
2554
2555 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2556                                        struct ieee80211_vif *vif)
2557 {
2558         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2559         int ret;
2560
2561         mutex_lock(&mvm->mutex);
2562         ret = iwl_mvm_scan_offload_stop(mvm, false);
2563         mutex_unlock(&mvm->mutex);
2564         iwl_mvm_wait_for_async_handlers(mvm);
2565
2566         return ret;
2567
2568 }
2569
2570 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2571                                enum set_key_cmd cmd,
2572                                struct ieee80211_vif *vif,
2573                                struct ieee80211_sta *sta,
2574                                struct ieee80211_key_conf *key)
2575 {
2576         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2577         int ret;
2578
2579         if (iwlwifi_mod_params.sw_crypto) {
2580                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2581                 return -EOPNOTSUPP;
2582         }
2583
2584         switch (key->cipher) {
2585         case WLAN_CIPHER_SUITE_TKIP:
2586                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2587                 /* fall-through */
2588         case WLAN_CIPHER_SUITE_CCMP:
2589                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2590                 break;
2591         case WLAN_CIPHER_SUITE_AES_CMAC:
2592                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2593                 break;
2594         case WLAN_CIPHER_SUITE_WEP40:
2595         case WLAN_CIPHER_SUITE_WEP104:
2596                 /* For non-client mode, only use WEP keys for TX as we probably
2597                  * don't have a station yet anyway and would then have to keep
2598                  * track of the keys, linking them to each of the clients/peers
2599                  * as they appear. For now, don't do that, for performance WEP
2600                  * offload doesn't really matter much, but we need it for some
2601                  * other offload features in client mode.
2602                  */
2603                 if (vif->type != NL80211_IFTYPE_STATION)
2604                         return 0;
2605                 break;
2606         default:
2607                 /* currently FW supports only one optional cipher scheme */
2608                 if (hw->n_cipher_schemes &&
2609                     hw->cipher_schemes->cipher == key->cipher)
2610                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2611                 else
2612                         return -EOPNOTSUPP;
2613         }
2614
2615         mutex_lock(&mvm->mutex);
2616
2617         switch (cmd) {
2618         case SET_KEY:
2619                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2620                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2621                         /*
2622                          * GTK on AP interface is a TX-only key, return 0;
2623                          * on IBSS they're per-station and because we're lazy
2624                          * we don't support them for RX, so do the same.
2625                          */
2626                         ret = 0;
2627                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2628                         break;
2629                 }
2630
2631                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2632                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2633                 if (ret) {
2634                         IWL_WARN(mvm, "set key failed\n");
2635                         /*
2636                          * can't add key for RX, but we don't need it
2637                          * in the device for TX so still return 0
2638                          */
2639                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2640                         ret = 0;
2641                 }
2642
2643                 break;
2644         case DISABLE_KEY:
2645                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2646                         ret = 0;
2647                         break;
2648                 }
2649
2650                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2651                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2652                 break;
2653         default:
2654                 ret = -EINVAL;
2655         }
2656
2657         mutex_unlock(&mvm->mutex);
2658         return ret;
2659 }
2660
2661 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2662                                         struct ieee80211_vif *vif,
2663                                         struct ieee80211_key_conf *keyconf,
2664                                         struct ieee80211_sta *sta,
2665                                         u32 iv32, u16 *phase1key)
2666 {
2667         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2668
2669         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2670                 return;
2671
2672         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2673 }
2674
2675
2676 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2677                                struct iwl_rx_packet *pkt, void *data)
2678 {
2679         struct iwl_mvm *mvm =
2680                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2681         struct iwl_hs20_roc_res *resp;
2682         int resp_len = iwl_rx_packet_payload_len(pkt);
2683         struct iwl_mvm_time_event_data *te_data = data;
2684
2685         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2686                 return true;
2687
2688         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2689                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2690                 return true;
2691         }
2692
2693         resp = (void *)pkt->data;
2694
2695         IWL_DEBUG_TE(mvm,
2696                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2697                      resp->status, resp->event_unique_id);
2698
2699         te_data->uid = le32_to_cpu(resp->event_unique_id);
2700         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2701                      te_data->uid);
2702
2703         spin_lock_bh(&mvm->time_event_lock);
2704         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2705         spin_unlock_bh(&mvm->time_event_lock);
2706
2707         return true;
2708 }
2709
2710 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2711 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2712                                     struct ieee80211_channel *channel,
2713                                     struct ieee80211_vif *vif,
2714                                     int duration)
2715 {
2716         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2717         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2718         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2719         static const u8 time_event_response[] = { HOT_SPOT_CMD };
2720         struct iwl_notification_wait wait_time_event;
2721         struct iwl_hs20_roc_req aux_roc_req = {
2722                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2723                 .id_and_color =
2724                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2725                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2726                 /* Set the channel info data */
2727                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2728                         PHY_BAND_24 : PHY_BAND_5,
2729                 .channel_info.channel = channel->hw_value,
2730                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2731                 /* Set the time and duration */
2732                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2733                 .apply_time_max_delay =
2734                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2735                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2736          };
2737
2738         /* Set the node address */
2739         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2740
2741         lockdep_assert_held(&mvm->mutex);
2742
2743         spin_lock_bh(&mvm->time_event_lock);
2744
2745         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2746                 spin_unlock_bh(&mvm->time_event_lock);
2747                 return -EIO;
2748         }
2749
2750         te_data->vif = vif;
2751         te_data->duration = duration;
2752         te_data->id = HOT_SPOT_CMD;
2753
2754         spin_unlock_bh(&mvm->time_event_lock);
2755
2756         /*
2757          * Use a notification wait, which really just processes the
2758          * command response and doesn't wait for anything, in order
2759          * to be able to process the response and get the UID inside
2760          * the RX path. Using CMD_WANT_SKB doesn't work because it
2761          * stores the buffer and then wakes up this thread, by which
2762          * time another notification (that the time event started)
2763          * might already be processed unsuccessfully.
2764          */
2765         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2766                                    time_event_response,
2767                                    ARRAY_SIZE(time_event_response),
2768                                    iwl_mvm_rx_aux_roc, te_data);
2769
2770         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2771                                    &aux_roc_req);
2772
2773         if (res) {
2774                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2775                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2776                 goto out_clear_te;
2777         }
2778
2779         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2780         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2781         /* should never fail */
2782         WARN_ON_ONCE(res);
2783
2784         if (res) {
2785  out_clear_te:
2786                 spin_lock_bh(&mvm->time_event_lock);
2787                 iwl_mvm_te_clear_data(mvm, te_data);
2788                 spin_unlock_bh(&mvm->time_event_lock);
2789         }
2790
2791         return res;
2792 }
2793
2794 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2795                        struct ieee80211_vif *vif,
2796                        struct ieee80211_channel *channel,
2797                        int duration,
2798                        enum ieee80211_roc_type type)
2799 {
2800         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2801         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2802         struct cfg80211_chan_def chandef;
2803         struct iwl_mvm_phy_ctxt *phy_ctxt;
2804         int ret, i;
2805
2806         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2807                            duration, type);
2808
2809         mutex_lock(&mvm->mutex);
2810
2811         switch (vif->type) {
2812         case NL80211_IFTYPE_STATION:
2813                 if (mvm->fw->ucode_capa.capa[0] &
2814                     IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2815                         /* Use aux roc framework (HS20) */
2816                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2817                                                        vif, duration);
2818                         goto out_unlock;
2819                 }
2820                 IWL_ERR(mvm, "hotspot not supported\n");
2821                 ret = -EINVAL;
2822                 goto out_unlock;
2823         case NL80211_IFTYPE_P2P_DEVICE:
2824                 /* handle below */
2825                 break;
2826         default:
2827                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2828                 ret = -EINVAL;
2829                 goto out_unlock;
2830         }
2831
2832         for (i = 0; i < NUM_PHY_CTX; i++) {
2833                 phy_ctxt = &mvm->phy_ctxts[i];
2834                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2835                         continue;
2836
2837                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2838                         /*
2839                          * Unbind the P2P_DEVICE from the current PHY context,
2840                          * and if the PHY context is not used remove it.
2841                          */
2842                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2843                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2844                                 goto out_unlock;
2845
2846                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2847
2848                         /* Bind the P2P_DEVICE to the current PHY Context */
2849                         mvmvif->phy_ctxt = phy_ctxt;
2850
2851                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2852                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2853                                 goto out_unlock;
2854
2855                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2856                         goto schedule_time_event;
2857                 }
2858         }
2859
2860         /* Need to update the PHY context only if the ROC channel changed */
2861         if (channel == mvmvif->phy_ctxt->channel)
2862                 goto schedule_time_event;
2863
2864         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2865
2866         /*
2867          * Change the PHY context configuration as it is currently referenced
2868          * only by the P2P Device MAC
2869          */
2870         if (mvmvif->phy_ctxt->ref == 1) {
2871                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2872                                                &chandef, 1, 1);
2873                 if (ret)
2874                         goto out_unlock;
2875         } else {
2876                 /*
2877                  * The PHY context is shared with other MACs. Need to remove the
2878                  * P2P Device from the binding, allocate an new PHY context and
2879                  * create a new binding
2880                  */
2881                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2882                 if (!phy_ctxt) {
2883                         ret = -ENOSPC;
2884                         goto out_unlock;
2885                 }
2886
2887                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2888                                                1, 1);
2889                 if (ret) {
2890                         IWL_ERR(mvm, "Failed to change PHY context\n");
2891                         goto out_unlock;
2892                 }
2893
2894                 /* Unbind the P2P_DEVICE from the current PHY context */
2895                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2896                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2897                         goto out_unlock;
2898
2899                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2900
2901                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2902                 mvmvif->phy_ctxt = phy_ctxt;
2903
2904                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2905                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2906                         goto out_unlock;
2907
2908                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2909         }
2910
2911 schedule_time_event:
2912         /* Schedule the time events */
2913         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2914
2915 out_unlock:
2916         mutex_unlock(&mvm->mutex);
2917         IWL_DEBUG_MAC80211(mvm, "leave\n");
2918         return ret;
2919 }
2920
2921 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2922 {
2923         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2924
2925         IWL_DEBUG_MAC80211(mvm, "enter\n");
2926
2927         mutex_lock(&mvm->mutex);
2928         iwl_mvm_stop_roc(mvm);
2929         mutex_unlock(&mvm->mutex);
2930
2931         IWL_DEBUG_MAC80211(mvm, "leave\n");
2932         return 0;
2933 }
2934
2935 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2936                                  struct ieee80211_chanctx_conf *ctx)
2937 {
2938         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2939         struct iwl_mvm_phy_ctxt *phy_ctxt;
2940         int ret;
2941
2942         lockdep_assert_held(&mvm->mutex);
2943
2944         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2945
2946         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2947         if (!phy_ctxt) {
2948                 ret = -ENOSPC;
2949                 goto out;
2950         }
2951
2952         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2953                                        ctx->rx_chains_static,
2954                                        ctx->rx_chains_dynamic);
2955         if (ret) {
2956                 IWL_ERR(mvm, "Failed to add PHY context\n");
2957                 goto out;
2958         }
2959
2960         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2961         *phy_ctxt_id = phy_ctxt->id;
2962 out:
2963         return ret;
2964 }
2965
2966 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2967                                struct ieee80211_chanctx_conf *ctx)
2968 {
2969         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2970         int ret;
2971
2972         mutex_lock(&mvm->mutex);
2973         ret = __iwl_mvm_add_chanctx(mvm, ctx);
2974         mutex_unlock(&mvm->mutex);
2975
2976         return ret;
2977 }
2978
2979 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2980                                      struct ieee80211_chanctx_conf *ctx)
2981 {
2982         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2983         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2984
2985         lockdep_assert_held(&mvm->mutex);
2986
2987         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2988 }
2989
2990 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2991                                    struct ieee80211_chanctx_conf *ctx)
2992 {
2993         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2994
2995         mutex_lock(&mvm->mutex);
2996         __iwl_mvm_remove_chanctx(mvm, ctx);
2997         mutex_unlock(&mvm->mutex);
2998 }
2999
3000 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3001                                    struct ieee80211_chanctx_conf *ctx,
3002                                    u32 changed)
3003 {
3004         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3005         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3006         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3007
3008         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3009                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3010                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3011                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3012                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3013                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3014                       phy_ctxt->ref, changed))
3015                 return;
3016
3017         mutex_lock(&mvm->mutex);
3018         iwl_mvm_bt_coex_vif_change(mvm);
3019         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3020                                  ctx->rx_chains_static,
3021                                  ctx->rx_chains_dynamic);
3022         mutex_unlock(&mvm->mutex);
3023 }
3024
3025 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3026                                         struct ieee80211_vif *vif,
3027                                         struct ieee80211_chanctx_conf *ctx,
3028                                         bool switching_chanctx)
3029 {
3030         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3031         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3032         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3033         int ret;
3034
3035         lockdep_assert_held(&mvm->mutex);
3036
3037         mvmvif->phy_ctxt = phy_ctxt;
3038
3039         switch (vif->type) {
3040         case NL80211_IFTYPE_AP:
3041                 /* only needed if we're switching chanctx (i.e. during CSA) */
3042                 if (switching_chanctx) {
3043                         mvmvif->ap_ibss_active = true;
3044                         break;
3045                 }
3046         case NL80211_IFTYPE_ADHOC:
3047                 /*
3048                  * The AP binding flow is handled as part of the start_ap flow
3049                  * (in bss_info_changed), similarly for IBSS.
3050                  */
3051                 ret = 0;
3052                 goto out;
3053         case NL80211_IFTYPE_STATION:
3054                 break;
3055         case NL80211_IFTYPE_MONITOR:
3056                 /* always disable PS when a monitor interface is active */
3057                 mvmvif->ps_disabled = true;
3058                 break;
3059         default:
3060                 ret = -EINVAL;
3061                 goto out;
3062         }
3063
3064         ret = iwl_mvm_binding_add_vif(mvm, vif);
3065         if (ret)
3066                 goto out;
3067
3068         /*
3069          * Power state must be updated before quotas,
3070          * otherwise fw will complain.
3071          */
3072         iwl_mvm_power_update_mac(mvm);
3073
3074         /* Setting the quota at this stage is only required for monitor
3075          * interfaces. For the other types, the bss_info changed flow
3076          * will handle quota settings.
3077          */
3078         if (vif->type == NL80211_IFTYPE_MONITOR) {
3079                 mvmvif->monitor_active = true;
3080                 ret = iwl_mvm_update_quotas(mvm, NULL);
3081                 if (ret)
3082                         goto out_remove_binding;
3083         }
3084
3085         /* Handle binding during CSA */
3086         if (vif->type == NL80211_IFTYPE_AP) {
3087                 iwl_mvm_update_quotas(mvm, NULL);
3088                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3089         }
3090
3091         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3092                 u32 duration = 2 * vif->bss_conf.beacon_int;
3093
3094                 /* iwl_mvm_protect_session() reads directly from the
3095                  * device (the system time), so make sure it is
3096                  * available.
3097                  */
3098                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3099                 if (ret)
3100                         goto out_remove_binding;
3101
3102                 /* Protect the session to make sure we hear the first
3103                  * beacon on the new channel.
3104                  */
3105                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3106                                         vif->bss_conf.beacon_int / 2,
3107                                         true);
3108
3109                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3110
3111                 iwl_mvm_update_quotas(mvm, NULL);
3112         }
3113
3114         goto out;
3115
3116 out_remove_binding:
3117         iwl_mvm_binding_remove_vif(mvm, vif);
3118         iwl_mvm_power_update_mac(mvm);
3119 out:
3120         if (ret)
3121                 mvmvif->phy_ctxt = NULL;
3122         return ret;
3123 }
3124 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3125                                       struct ieee80211_vif *vif,
3126                                       struct ieee80211_chanctx_conf *ctx)
3127 {
3128         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3129         int ret;
3130
3131         mutex_lock(&mvm->mutex);
3132         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3133         mutex_unlock(&mvm->mutex);
3134
3135         return ret;
3136 }
3137
3138 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3139                                            struct ieee80211_vif *vif,
3140                                            struct ieee80211_chanctx_conf *ctx,
3141                                            bool switching_chanctx)
3142 {
3143         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3144         struct ieee80211_vif *disabled_vif = NULL;
3145
3146         lockdep_assert_held(&mvm->mutex);
3147
3148         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3149
3150         switch (vif->type) {
3151         case NL80211_IFTYPE_ADHOC:
3152                 goto out;
3153         case NL80211_IFTYPE_MONITOR:
3154                 mvmvif->monitor_active = false;
3155                 mvmvif->ps_disabled = false;
3156                 break;
3157         case NL80211_IFTYPE_AP:
3158                 /* This part is triggered only during CSA */
3159                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3160                         goto out;
3161
3162                 mvmvif->csa_countdown = false;
3163
3164                 /* Set CS bit on all the stations */
3165                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3166
3167                 /* Save blocked iface, the timeout is set on the next beacon */
3168                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3169
3170                 mvmvif->ap_ibss_active = false;
3171                 break;
3172         case NL80211_IFTYPE_STATION:
3173                 if (!switching_chanctx)
3174                         break;
3175
3176                 disabled_vif = vif;
3177
3178                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3179                 break;
3180         default:
3181                 break;
3182         }
3183
3184         iwl_mvm_update_quotas(mvm, disabled_vif);
3185         iwl_mvm_binding_remove_vif(mvm, vif);
3186
3187 out:
3188         mvmvif->phy_ctxt = NULL;
3189         iwl_mvm_power_update_mac(mvm);
3190 }
3191
3192 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3193                                          struct ieee80211_vif *vif,
3194                                          struct ieee80211_chanctx_conf *ctx)
3195 {
3196         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3197
3198         mutex_lock(&mvm->mutex);
3199         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3200         mutex_unlock(&mvm->mutex);
3201 }
3202
3203 static int
3204 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3205                                 struct ieee80211_vif_chanctx_switch *vifs)
3206 {
3207         int ret;
3208
3209         mutex_lock(&mvm->mutex);
3210         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3211         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3212
3213         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3214         if (ret) {
3215                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3216                 goto out_reassign;
3217         }
3218
3219         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3220                                            true);
3221         if (ret) {
3222                 IWL_ERR(mvm,
3223                         "failed to assign new_ctx during channel switch\n");
3224                 goto out_remove;
3225         }
3226
3227         /* we don't support TDLS during DCM - can be caused by channel switch */
3228         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3229                 iwl_mvm_teardown_tdls_peers(mvm);
3230
3231         goto out;
3232
3233 out_remove:
3234         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3235
3236 out_reassign:
3237         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3238                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3239                 goto out_restart;
3240         }
3241
3242         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3243                                          true)) {
3244                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3245                 goto out_restart;
3246         }
3247
3248         goto out;
3249
3250 out_restart:
3251         /* things keep failing, better restart the hw */
3252         iwl_mvm_nic_restart(mvm, false);
3253
3254 out:
3255         mutex_unlock(&mvm->mutex);
3256
3257         return ret;
3258 }
3259
3260 static int
3261 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3262                                     struct ieee80211_vif_chanctx_switch *vifs)
3263 {
3264         int ret;
3265
3266         mutex_lock(&mvm->mutex);
3267         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3268
3269         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3270                                            true);
3271         if (ret) {
3272                 IWL_ERR(mvm,
3273                         "failed to assign new_ctx during channel switch\n");
3274                 goto out_reassign;
3275         }
3276
3277         goto out;
3278
3279 out_reassign:
3280         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3281                                          true)) {
3282                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3283                 goto out_restart;
3284         }
3285
3286         goto out;
3287
3288 out_restart:
3289         /* things keep failing, better restart the hw */
3290         iwl_mvm_nic_restart(mvm, false);
3291
3292 out:
3293         mutex_unlock(&mvm->mutex);
3294
3295         return ret;
3296 }
3297
3298 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3299                                       struct ieee80211_vif_chanctx_switch *vifs,
3300                                       int n_vifs,
3301                                       enum ieee80211_chanctx_switch_mode mode)
3302 {
3303         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3304         int ret;
3305
3306         /* we only support a single-vif right now */
3307         if (n_vifs > 1)
3308                 return -EOPNOTSUPP;
3309
3310         switch (mode) {
3311         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3312                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3313                 break;
3314         case CHANCTX_SWMODE_REASSIGN_VIF:
3315                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3316                 break;
3317         default:
3318                 ret = -EOPNOTSUPP;
3319                 break;
3320         }
3321
3322         return ret;
3323 }
3324
3325 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3326                            struct ieee80211_sta *sta,
3327                            bool set)
3328 {
3329         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3330         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3331
3332         if (!mvm_sta || !mvm_sta->vif) {
3333                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3334                 return -EINVAL;
3335         }
3336
3337         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3338 }
3339
3340 #ifdef CONFIG_NL80211_TESTMODE
3341 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3342         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3343         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3344         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3345 };
3346
3347 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3348                                       struct ieee80211_vif *vif,
3349                                       void *data, int len)
3350 {
3351         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3352         int err;
3353         u32 noa_duration;
3354
3355         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3356         if (err)
3357                 return err;
3358
3359         if (!tb[IWL_MVM_TM_ATTR_CMD])
3360                 return -EINVAL;
3361
3362         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3363         case IWL_MVM_TM_CMD_SET_NOA:
3364                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3365                     !vif->bss_conf.enable_beacon ||
3366                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3367                         return -EINVAL;
3368
3369                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3370                 if (noa_duration >= vif->bss_conf.beacon_int)
3371                         return -EINVAL;
3372
3373                 mvm->noa_duration = noa_duration;
3374                 mvm->noa_vif = vif;
3375
3376                 return iwl_mvm_update_quotas(mvm, NULL);
3377         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3378                 /* must be associated client vif - ignore authorized */
3379                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3380                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3381                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3382                         return -EINVAL;
3383
3384                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3385                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3386                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3387         }
3388
3389         return -EOPNOTSUPP;
3390 }
3391
3392 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3393                                     struct ieee80211_vif *vif,
3394                                     void *data, int len)
3395 {
3396         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3397         int err;
3398
3399         mutex_lock(&mvm->mutex);
3400         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3401         mutex_unlock(&mvm->mutex);
3402
3403         return err;
3404 }
3405 #endif
3406
3407 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3408                                    struct ieee80211_vif *vif,
3409                                    struct ieee80211_channel_switch *chsw)
3410 {
3411         /* By implementing this operation, we prevent mac80211 from
3412          * starting its own channel switch timer, so that we can call
3413          * ieee80211_chswitch_done() ourselves at the right time
3414          * (which is when the absence time event starts).
3415          */
3416
3417         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3418                            "dummy channel switch op\n");
3419 }
3420
3421 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3422                                       struct ieee80211_vif *vif,
3423                                       struct ieee80211_channel_switch *chsw)
3424 {
3425         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3426         struct ieee80211_vif *csa_vif;
3427         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3428         u32 apply_time;
3429         int ret;
3430
3431         mutex_lock(&mvm->mutex);
3432
3433         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3434                            chsw->chandef.center_freq1);
3435
3436         switch (vif->type) {
3437         case NL80211_IFTYPE_AP:
3438                 csa_vif =
3439                         rcu_dereference_protected(mvm->csa_vif,
3440                                                   lockdep_is_held(&mvm->mutex));
3441                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3442                               "Another CSA is already in progress")) {
3443                         ret = -EBUSY;
3444                         goto out_unlock;
3445                 }
3446
3447                 rcu_assign_pointer(mvm->csa_vif, vif);
3448
3449                 if (WARN_ONCE(mvmvif->csa_countdown,
3450                               "Previous CSA countdown didn't complete")) {
3451                         ret = -EBUSY;
3452                         goto out_unlock;
3453                 }
3454
3455                 break;
3456         case NL80211_IFTYPE_STATION:
3457                 /* Schedule the time event to a bit before beacon 1,
3458                  * to make sure we're in the new channel when the
3459                  * GO/AP arrives.
3460                  */
3461                 apply_time = chsw->device_timestamp +
3462                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3463                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3464
3465                 if (chsw->block_tx)
3466                         iwl_mvm_csa_client_absent(mvm, vif);
3467
3468                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3469                                             apply_time);
3470                 if (mvmvif->bf_data.bf_enabled) {
3471                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3472                         if (ret)
3473                                 goto out_unlock;
3474                 }
3475
3476                 break;
3477         default:
3478                 break;
3479         }
3480
3481         mvmvif->ps_disabled = true;
3482
3483         ret = iwl_mvm_power_update_ps(mvm);
3484         if (ret)
3485                 goto out_unlock;
3486
3487         /* we won't be on this channel any longer */
3488         iwl_mvm_teardown_tdls_peers(mvm);
3489
3490 out_unlock:
3491         mutex_unlock(&mvm->mutex);
3492
3493         return ret;
3494 }
3495
3496 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3497                                        struct ieee80211_vif *vif)
3498 {
3499         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3500         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3501         int ret;
3502
3503         mutex_lock(&mvm->mutex);
3504
3505         if (vif->type == NL80211_IFTYPE_STATION) {
3506                 struct iwl_mvm_sta *mvmsta;
3507
3508                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3509                                                           mvmvif->ap_sta_id);
3510
3511                 if (WARN_ON(!mvmsta)) {
3512                         ret = -EIO;
3513                         goto out_unlock;
3514                 }
3515
3516                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3517
3518                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3519
3520                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3521                 if (ret)
3522                         goto out_unlock;
3523
3524                 iwl_mvm_stop_session_protection(mvm, vif);
3525         }
3526
3527         mvmvif->ps_disabled = false;
3528
3529         ret = iwl_mvm_power_update_ps(mvm);
3530
3531 out_unlock:
3532         mutex_unlock(&mvm->mutex);
3533
3534         return ret;
3535 }
3536
3537 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3538                               struct ieee80211_vif *vif, u32 queues, bool drop)
3539 {
3540         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3541         struct iwl_mvm_vif *mvmvif;
3542         struct iwl_mvm_sta *mvmsta;
3543         struct ieee80211_sta *sta;
3544         int i;
3545         u32 msk = 0;
3546
3547         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3548                 return;
3549
3550         mutex_lock(&mvm->mutex);
3551         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3552
3553         /* flush the AP-station and all TDLS peers */
3554         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3555                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3556                                                 lockdep_is_held(&mvm->mutex));
3557                 if (IS_ERR_OR_NULL(sta))
3558                         continue;
3559
3560                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3561                 if (mvmsta->vif != vif)
3562                         continue;
3563
3564                 /* make sure only TDLS peers or the AP are flushed */
3565                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3566
3567                 msk |= mvmsta->tfd_queue_msk;
3568         }
3569
3570         if (drop) {
3571                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3572                         IWL_ERR(mvm, "flush request fail\n");
3573                 mutex_unlock(&mvm->mutex);
3574         } else {
3575                 mutex_unlock(&mvm->mutex);
3576
3577                 /* this can take a while, and we may need/want other operations
3578                  * to succeed while doing this, so do it without the mutex held
3579                  */
3580                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3581         }
3582 }
3583
3584 const struct ieee80211_ops iwl_mvm_hw_ops = {
3585         .tx = iwl_mvm_mac_tx,
3586         .ampdu_action = iwl_mvm_mac_ampdu_action,
3587         .start = iwl_mvm_mac_start,
3588         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3589         .stop = iwl_mvm_mac_stop,
3590         .add_interface = iwl_mvm_mac_add_interface,
3591         .remove_interface = iwl_mvm_mac_remove_interface,
3592         .config = iwl_mvm_mac_config,
3593         .prepare_multicast = iwl_mvm_prepare_multicast,
3594         .configure_filter = iwl_mvm_configure_filter,
3595         .bss_info_changed = iwl_mvm_bss_info_changed,
3596         .hw_scan = iwl_mvm_mac_hw_scan,
3597         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3598         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3599         .sta_state = iwl_mvm_mac_sta_state,
3600         .sta_notify = iwl_mvm_mac_sta_notify,
3601         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3602         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3603         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3604         .sta_rc_update = iwl_mvm_sta_rc_update,
3605         .conf_tx = iwl_mvm_mac_conf_tx,
3606         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3607         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3608         .flush = iwl_mvm_mac_flush,
3609         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3610         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3611         .set_key = iwl_mvm_mac_set_key,
3612         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3613         .remain_on_channel = iwl_mvm_roc,
3614         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3615         .add_chanctx = iwl_mvm_add_chanctx,
3616         .remove_chanctx = iwl_mvm_remove_chanctx,
3617         .change_chanctx = iwl_mvm_change_chanctx,
3618         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3619         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3620         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3621
3622         .start_ap = iwl_mvm_start_ap_ibss,
3623         .stop_ap = iwl_mvm_stop_ap_ibss,
3624         .join_ibss = iwl_mvm_start_ap_ibss,
3625         .leave_ibss = iwl_mvm_stop_ap_ibss,
3626
3627         .set_tim = iwl_mvm_set_tim,
3628
3629         .channel_switch = iwl_mvm_channel_switch,
3630         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3631         .post_channel_switch = iwl_mvm_post_channel_switch,
3632
3633         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3634         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3635         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3636
3637         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3638
3639 #ifdef CONFIG_PM_SLEEP
3640         /* look at d3.c */
3641         .suspend = iwl_mvm_suspend,
3642         .resume = iwl_mvm_resume,
3643         .set_wakeup = iwl_mvm_set_wakeup,
3644         .set_rekey_data = iwl_mvm_set_rekey_data,
3645 #if IS_ENABLED(CONFIG_IPV6)
3646         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3647 #endif
3648         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3649 #endif
3650 };