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  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/kernel.h>
  64 #include <linux/slab.h>
  65 #include <linux/skbuff.h>
  66 #include <linux/netdevice.h>
  67 #include <linux/etherdevice.h>
  68 #include <linux/ip.h>
  69 #include <linux/if_arp.h>
  70 #include <net/mac80211.h>
  71 #include <net/ieee80211_radiotap.h>
  72 #include <net/tcp.h>
  73
  74 #include "iwl-op-mode.h"
  75 #include "iwl-io.h"
  76 #include "mvm.h"
  77 #include "sta.h"
  78 #include "time-event.h"
  79 #include "iwl-eeprom-parse.h"
  80 #include "fw-api-scan.h"
  81 #include "iwl-phy-db.h"
  82 #include "testmode.h"
  83
  84 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  85         {
  86                 .max = 1,
  87                 .types = BIT(NL80211_IFTYPE_STATION),
  88         },
  89         {
  90                 .max = 1,
  91                 .types = BIT(NL80211_IFTYPE_AP) |
  92                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  93                         BIT(NL80211_IFTYPE_P2P_GO),
  94         },
  95         {
  96                 .max = 1,
  97                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
  98         },
  99 };
 100
 101 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 102         {
 103                 .num_different_channels = 1,
 104                 .max_interfaces = 3,
 105                 .limits = iwl_mvm_limits,
 106                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 107         },
 108 };
 109
 110 #ifdef CONFIG_PM_SLEEP
 111 static const struct nl80211_wowlan_tcp_data_token_feature
 112 iwl_mvm_wowlan_tcp_token_feature = {
 113         .min_len = 0,
 114         .max_len = 255,
 115         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 116 };
 117
 118 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 119         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 120         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 121                             sizeof(struct ethhdr) -
 122                             sizeof(struct iphdr) -
 123                             sizeof(struct tcphdr),
 124         .data_interval_max = 65535, /* __le16 in API */
 125         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 126                             sizeof(struct ethhdr) -
 127                             sizeof(struct iphdr) -
 128                             sizeof(struct tcphdr),
 129         .seq = true,
 130 };
 131 #endif
 132
 133 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 134 /*
 135  * Use the reserved field to indicate magic values.
 136  * these values will only be used internally by the driver,
 137  * and won't make it to the fw (reserved will be 0).
 138  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 139  *      be the vif's ip address. in case there is not a single
 140  *      ip address (0, or more than 1), this attribute will
 141  *      be skipped.
 142  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 143  *      the LSB bytes of the vif's mac address
 144  */
 145 enum {
 146         BC_FILTER_MAGIC_NONE = 0,
 147         BC_FILTER_MAGIC_IP,
 148         BC_FILTER_MAGIC_MAC,
 149 };
 150
 151 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 152         {
 153                 /* arp */
 154                 .discard = 0,
 155                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 156                 .attrs = {
 157                         {
 158                                 /* frame type - arp, hw type - ethernet */
 159                                 .offset_type =
 160                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 161                                 .offset = sizeof(rfc1042_header),
 162                                 .val = cpu_to_be32(0x08060001),
 163                                 .mask = cpu_to_be32(0xffffffff),
 164                         },
 165                         {
 166                                 /* arp dest ip */
 167                                 .offset_type =
 168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 169                                 .offset = sizeof(rfc1042_header) + 2 +
 170                                           sizeof(struct arphdr) +
 171                                           ETH_ALEN + sizeof(__be32) +
 172                                           ETH_ALEN,
 173                                 .mask = cpu_to_be32(0xffffffff),
 174                                 /* mark it as special field */
 175                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 176                         },
 177                 },
 178         },
 179         {
 180                 /* dhcp offer bcast */
 181                 .discard = 0,
 182                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 183                 .attrs = {
 184                         {
 185                                 /* udp dest port - 68 (bootp client)*/
 186                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 187                                 .offset = offsetof(struct udphdr, dest),
 188                                 .val = cpu_to_be32(0x00440000),
 189                                 .mask = cpu_to_be32(0xffff0000),
 190                         },
 191                         {
 192                                 /* dhcp - lsb bytes of client hw address */
 193                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 194                                 .offset = 38,
 195                                 .mask = cpu_to_be32(0xffffffff),
 196                                 /* mark it as special field */
 197                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 198                         },
 199                 },
 200         },
 201         /* last filter must be empty */
 202         {},
 203 };
 204 #endif
 205
 206 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 207 {
 208         if (!iwl_mvm_is_d0i3_supported(mvm))
 209                 return;
 210
 211         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 212         WARN_ON(test_and_set_bit(ref_type, mvm->ref_bitmap));
 213         iwl_trans_ref(mvm->trans);
 214 }
 215
 216 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 217 {
 218         if (!iwl_mvm_is_d0i3_supported(mvm))
 219                 return;
 220
 221         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 222         WARN_ON(!test_and_clear_bit(ref_type, mvm->ref_bitmap));
 223         iwl_trans_unref(mvm->trans);
 224 }
 225
 226 static void
 227 iwl_mvm_unref_all_except(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref)
 228 {
 229         int i;
 230
 231         if (!iwl_mvm_is_d0i3_supported(mvm))
 232                 return;
 233
 234         for_each_set_bit(i, mvm->ref_bitmap, IWL_MVM_REF_COUNT) {
 235                 if (ref == i)
 236                         continue;
 237
 238                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d\n", i);
 239                 clear_bit(i, mvm->ref_bitmap);
 240                 iwl_trans_unref(mvm->trans);
 241         }
 242 }
 243
 244 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 245 {
 246         int i;
 247
 248         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 249         for (i = 0; i < NUM_PHY_CTX; i++) {
 250                 mvm->phy_ctxts[i].id = i;
 251                 mvm->phy_ctxts[i].ref = 0;
 252         }
 253 }
 254
 255 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 256 {
 257         /* we create the 802.11 header and SSID element */
 258         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
 259                 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
 260         return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 261 }
 262
 263 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 264 {
 265         struct ieee80211_hw *hw = mvm->hw;
 266         int num_mac, ret, i;
 267
 268         /* Tell mac80211 our characteristics */
 269         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 270                     IEEE80211_HW_SPECTRUM_MGMT |
 271                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 272                     IEEE80211_HW_QUEUE_CONTROL |
 273                     IEEE80211_HW_WANT_MONITOR_VIF |
 274                     IEEE80211_HW_SUPPORTS_PS |
 275                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 276                     IEEE80211_HW_AMPDU_AGGREGATION |
 277                     IEEE80211_HW_TIMING_BEACON_ONLY |
 278                     IEEE80211_HW_CONNECTION_MONITOR |
 279                     IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
 280                     IEEE80211_HW_SUPPORTS_STATIC_SMPS;
 281
 282         hw->queues = mvm->first_agg_queue;
 283         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 284         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 285                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 286         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
 287         hw->rate_control_algorithm = "iwl-mvm-rs";
 288
 289         /*
 290          * Enable 11w if advertised by firmware and software crypto
 291          * is not enabled (as the firmware will interpret some mgmt
 292          * packets, so enabling it with software crypto isn't safe)
 293          */
 294         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 295             !iwlwifi_mod_params.sw_crypto)
 296                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 297
 298         if (0 && mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT) {
 299                 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
 300                 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
 301                 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 302         }
 303
 304         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 305         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 306         hw->chanctx_data_size = sizeof(u16);
 307
 308         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 309                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 310                 BIT(NL80211_IFTYPE_AP) |
 311                 BIT(NL80211_IFTYPE_P2P_GO) |
 312                 BIT(NL80211_IFTYPE_P2P_DEVICE);
 313
 314         /* IBSS has bugs in older versions */
 315         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 8)
 316                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
 317
 318         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 319         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 320                                        REGULATORY_DISABLE_BEACON_HINTS;
 321
 322         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 323                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 324
 325         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 326         hw->wiphy->n_iface_combinations =
 327                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 328
 329         hw->wiphy->max_remain_on_channel_duration = 10000;
 330         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 331
 332         /* Extract MAC address */
 333         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 334         hw->wiphy->addresses = mvm->addresses;
 335         hw->wiphy->n_addresses = 1;
 336
 337         /* Extract additional MAC addresses if available */
 338         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 339                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 340
 341         for (i = 1; i < num_mac; i++) {
 342                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 343                        ETH_ALEN);
 344                 mvm->addresses[i].addr[5]++;
 345                 hw->wiphy->n_addresses++;
 346         }
 347
 348         iwl_mvm_reset_phy_ctxts(mvm);
 349
 350         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 351
 352         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 353
 354         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 355                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 356                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 357         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 358                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 359                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 360
 361         hw->wiphy->hw_version = mvm->trans->hw_id;
 362
 363         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 364                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 365         else
 366                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 367
 368         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SCHED_SCAN) {
 369                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 370                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 371                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 372                 /* we create the 802.11 header and zero length SSID IE. */
 373                 hw->wiphy->max_sched_scan_ie_len =
 374                                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 375         }
 376
 377         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 378                                NL80211_FEATURE_P2P_GO_OPPPS;
 379
 380         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 381
 382         /* currently FW API supports only one optional cipher scheme */
 383         if (mvm->fw->cs[0].cipher) {
 384                 mvm->hw->n_cipher_schemes = 1;
 385                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 386         }
 387
 388 #ifdef CONFIG_PM_SLEEP
 389         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 390             mvm->trans->ops->d3_suspend &&
 391             mvm->trans->ops->d3_resume &&
 392             device_can_wakeup(mvm->trans->dev)) {
 393                 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 394                                     WIPHY_WOWLAN_DISCONNECT |
 395                                     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 396                                     WIPHY_WOWLAN_RFKILL_RELEASE;
 397                 if (!iwlwifi_mod_params.sw_crypto)
 398                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 399                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 400                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 401
 402                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 403                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 404                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 405                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 406                 hw->wiphy->wowlan = &mvm->wowlan;
 407         }
 408 #endif
 409
 410 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 411         /* assign default bcast filtering configuration */
 412         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 413 #endif
 414
 415         ret = iwl_mvm_leds_init(mvm);
 416         if (ret)
 417                 return ret;
 418
 419         ret = ieee80211_register_hw(mvm->hw);
 420         if (ret)
 421                 iwl_mvm_leds_exit(mvm);
 422
 423         return ret;
 424 }
 425
 426 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 427                              struct ieee80211_sta *sta,
 428                              struct sk_buff *skb)
 429 {
 430         struct iwl_mvm_sta *mvmsta;
 431         bool defer = false;
 432
 433         /*
 434          * double check the IN_D0I3 flag both before and after
 435          * taking the spinlock, in order to prevent taking
 436          * the spinlock when not needed.
 437          */
 438         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 439                 return false;
 440
 441         spin_lock(&mvm->d0i3_tx_lock);
 442         /*
 443          * testing the flag again ensures the skb dequeue
 444          * loop (on d0i3 exit) hasn't run yet.
 445          */
 446         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 447                 goto out;
 448
 449         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 450         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 451             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 452                 goto out;
 453
 454         __skb_queue_tail(&mvm->d0i3_tx, skb);
 455         ieee80211_stop_queues(mvm->hw);
 456
 457         /* trigger wakeup */
 458         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 459         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 460
 461         defer = true;
 462 out:
 463         spin_unlock(&mvm->d0i3_tx_lock);
 464         return defer;
 465 }
 466
 467 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 468                            struct ieee80211_tx_control *control,
 469                            struct sk_buff *skb)
 470 {
 471         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 472         struct ieee80211_sta *sta = control->sta;
 473         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 474         struct ieee80211_hdr *hdr = (void *)skb->data;
 475
 476         if (iwl_mvm_is_radio_killed(mvm)) {
 477                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 478                 goto drop;
 479         }
 480
 481         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 482             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 483                 goto drop;
 484
 485         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 486         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 487                      ieee80211_is_mgmt(hdr->frame_control) &&
 488                      !ieee80211_is_deauth(hdr->frame_control) &&
 489                      !ieee80211_is_disassoc(hdr->frame_control) &&
 490                      !ieee80211_is_action(hdr->frame_control)))
 491                 sta = NULL;
 492
 493         if (sta) {
 494                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 495                         return;
 496                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 497                         goto drop;
 498                 return;
 499         }
 500
 501         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 502                 goto drop;
 503         return;
 504  drop:
 505         ieee80211_free_txskb(hw, skb);
 506 }
 507
 508 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 509 {
 510         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 511                 return false;
 512         return true;
 513 }
 514
 515 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 516 {
 517         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 518                 return false;
 519         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 520                 return true;
 521
 522         /* enabled by default */
 523         return true;
 524 }
 525
 526 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 527                                     struct ieee80211_vif *vif,
 528                                     enum ieee80211_ampdu_mlme_action action,
 529                                     struct ieee80211_sta *sta, u16 tid,
 530                                     u16 *ssn, u8 buf_size)
 531 {
 532         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 533         int ret;
 534         bool tx_agg_ref = false;
 535
 536         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 537                      sta->addr, tid, action);
 538
 539         if (!(mvm->nvm_data->sku_cap_11n_enable))
 540                 return -EACCES;
 541
 542         /* return from D0i3 before starting a new Tx aggregation */
 543         if (action == IEEE80211_AMPDU_TX_START) {
 544                 iwl_mvm_ref(mvm, IWL_MVM_REF_TX_AGG);
 545                 tx_agg_ref = true;
 546
 547                 /*
 548                  * wait synchronously until D0i3 exit to get the correct
 549                  * sequence number for the tid
 550                  */
 551                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 552                           !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), HZ)) {
 553                         WARN_ON_ONCE(1);
 554                         iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 555                         return -EIO;
 556                 }
 557         }
 558
 559         mutex_lock(&mvm->mutex);
 560
 561         switch (action) {
 562         case IEEE80211_AMPDU_RX_START:
 563                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 564                         ret = -EINVAL;
 565                         break;
 566                 }
 567                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 568                 break;
 569         case IEEE80211_AMPDU_RX_STOP:
 570                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 571                 break;
 572         case IEEE80211_AMPDU_TX_START:
 573                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 574                         ret = -EINVAL;
 575                         break;
 576                 }
 577                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 578                 break;
 579         case IEEE80211_AMPDU_TX_STOP_CONT:
 580                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 581                 break;
 582         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 583         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 584                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 585                 break;
 586         case IEEE80211_AMPDU_TX_OPERATIONAL:
 587                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 588                 break;
 589         default:
 590                 WARN_ON_ONCE(1);
 591                 ret = -EINVAL;
 592                 break;
 593         }
 594         mutex_unlock(&mvm->mutex);
 595
 596         /*
 597          * If the tid is marked as started, we won't use it for offloaded
 598          * traffic on the next D0i3 entry. It's safe to unref.
 599          */
 600         if (tx_agg_ref)
 601                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 602
 603         return ret;
 604 }
 605
 606 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 607                                      struct ieee80211_vif *vif)
 608 {
 609         struct iwl_mvm *mvm = data;
 610         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 611
 612         mvmvif->uploaded = false;
 613         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 614
 615         /* does this make sense at all? */
 616         mvmvif->color++;
 617
 618         spin_lock_bh(&mvm->time_event_lock);
 619         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 620         spin_unlock_bh(&mvm->time_event_lock);
 621
 622         mvmvif->phy_ctxt = NULL;
 623 }
 624
 625 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 626 {
 627 #ifdef CONFIG_IWLWIFI_DEBUGFS
 628         static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
 629
 630         iwl_mvm_fw_error_dump(mvm);
 631
 632         /* notify the userspace about the error we had */
 633         kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
 634 #endif
 635
 636         iwl_trans_stop_device(mvm->trans);
 637
 638         mvm->scan_status = IWL_MVM_SCAN_NONE;
 639
 640         /* just in case one was running */
 641         ieee80211_remain_on_channel_expired(mvm->hw);
 642
 643         ieee80211_iterate_active_interfaces_atomic(
 644                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 645                 iwl_mvm_cleanup_iterator, mvm);
 646
 647         mvm->p2p_device_vif = NULL;
 648         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 649
 650         iwl_mvm_reset_phy_ctxts(mvm);
 651         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 652         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 653
 654         ieee80211_wake_queues(mvm->hw);
 655
 656         /* cleanup all stale references (scan, roc), but keep the
 657          * ucode_down ref until reconfig is complete */
 658         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 659
 660         mvm->vif_count = 0;
 661         mvm->rx_ba_sessions = 0;
 662 }
 663
 664 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 665 {
 666         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 667         int ret;
 668
 669         mutex_lock(&mvm->mutex);
 670
 671         /* Clean up some internal and mac80211 state on restart */
 672         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 673                 iwl_mvm_restart_cleanup(mvm);
 674
 675         ret = iwl_mvm_up(mvm);
 676         mutex_unlock(&mvm->mutex);
 677
 678         return ret;
 679 }
 680
 681 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 682 {
 683         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 684         int ret;
 685
 686         mutex_lock(&mvm->mutex);
 687
 688         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 689         iwl_mvm_d0i3_enable_tx(mvm, NULL);
 690         ret = iwl_mvm_update_quotas(mvm, NULL);
 691         if (ret)
 692                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 693                         ret);
 694
 695         /* allow transport/FW low power modes */
 696         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 697
 698         mutex_unlock(&mvm->mutex);
 699 }
 700
 701 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 702 {
 703         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 704
 705         flush_work(&mvm->d0i3_exit_work);
 706         flush_work(&mvm->async_handlers_wk);
 707
 708         mutex_lock(&mvm->mutex);
 709
 710         /* disallow low power states when the FW is down */
 711         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
 712
 713         /* async_handlers_wk is now blocked */
 714
 715         /*
 716          * The work item could be running or queued if the
 717          * ROC time event stops just as we get here.
 718          */
 719         cancel_work_sync(&mvm->roc_done_wk);
 720
 721         iwl_trans_stop_device(mvm->trans);
 722
 723         iwl_mvm_async_handlers_purge(mvm);
 724         /* async_handlers_list is empty and will stay empty: HW is stopped */
 725
 726         /* the fw is stopped, the aux sta is dead: clean up driver state */
 727         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 728
 729         mutex_unlock(&mvm->mutex);
 730
 731         /*
 732          * The worker might have been waiting for the mutex, let it run and
 733          * discover that its list is now empty.
 734          */
 735         cancel_work_sync(&mvm->async_handlers_wk);
 736 }
 737
 738 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
 739 {
 740         u16 i;
 741
 742         lockdep_assert_held(&mvm->mutex);
 743
 744         for (i = 0; i < NUM_PHY_CTX; i++)
 745                 if (!mvm->phy_ctxts[i].ref)
 746                         return &mvm->phy_ctxts[i];
 747
 748         IWL_ERR(mvm, "No available PHY context\n");
 749         return NULL;
 750 }
 751
 752 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 753                                 s8 tx_power)
 754 {
 755         /* FW is in charge of regulatory enforcement */
 756         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
 757                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
 758                 .pwr_restriction = cpu_to_le16(tx_power),
 759         };
 760
 761         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, CMD_SYNC,
 762                                     sizeof(reduce_txpwr_cmd),
 763                                     &reduce_txpwr_cmd);
 764 }
 765
 766 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 767                                      struct ieee80211_vif *vif)
 768 {
 769         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 770         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 771         int ret;
 772
 773         /*
 774          * Not much to do here. The stack will not allow interface
 775          * types or combinations that we didn't advertise, so we
 776          * don't really have to check the types.
 777          */
 778
 779         mutex_lock(&mvm->mutex);
 780
 781         /* Allocate resources for the MAC context, and add it to the fw  */
 782         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 783         if (ret)
 784                 goto out_unlock;
 785
 786         /* Counting number of interfaces is needed for legacy PM */
 787         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 788                 mvm->vif_count++;
 789
 790         /*
 791          * The AP binding flow can be done only after the beacon
 792          * template is configured (which happens only in the mac80211
 793          * start_ap() flow), and adding the broadcast station can happen
 794          * only after the binding.
 795          * In addition, since modifying the MAC before adding a bcast
 796          * station is not allowed by the FW, delay the adding of MAC context to
 797          * the point where we can also add the bcast station.
 798          * In short: there's not much we can do at this point, other than
 799          * allocating resources :)
 800          */
 801         if (vif->type == NL80211_IFTYPE_AP ||
 802             vif->type == NL80211_IFTYPE_ADHOC) {
 803                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 804                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 805                                                qmask,
 806                                                ieee80211_vif_type_p2p(vif));
 807                 if (ret) {
 808                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 809                         goto out_release;
 810                 }
 811
 812                 iwl_mvm_vif_dbgfs_register(mvm, vif);
 813                 goto out_unlock;
 814         }
 815
 816         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 817         if (ret)
 818                 goto out_release;
 819
 820         ret = iwl_mvm_power_update_mac(mvm, vif);
 821         if (ret)
 822                 goto out_release;
 823
 824         /* beacon filtering */
 825         ret = iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
 826         if (ret)
 827                 goto out_remove_mac;
 828
 829         if (!mvm->bf_allowed_vif &&
 830             vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
 831             mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BF_UPDATED){
 832                 mvm->bf_allowed_vif = mvmvif;
 833                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 834                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 835         }
 836
 837         /*
 838          * P2P_DEVICE interface does not have a channel context assigned to it,
 839          * so a dedicated PHY context is allocated to it and the corresponding
 840          * MAC context is bound to it at this stage.
 841          */
 842         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 843
 844                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
 845                 if (!mvmvif->phy_ctxt) {
 846                         ret = -ENOSPC;
 847                         goto out_free_bf;
 848                 }
 849
 850                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
 851                 ret = iwl_mvm_binding_add_vif(mvm, vif);
 852                 if (ret)
 853                         goto out_unref_phy;
 854
 855                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 856                 if (ret)
 857                         goto out_unbind;
 858
 859                 /* Save a pointer to p2p device vif, so it can later be used to
 860                  * update the p2p device MAC when a GO is started/stopped */
 861                 mvm->p2p_device_vif = vif;
 862         }
 863
 864         iwl_mvm_vif_dbgfs_register(mvm, vif);
 865         goto out_unlock;
 866
 867  out_unbind:
 868         iwl_mvm_binding_remove_vif(mvm, vif);
 869  out_unref_phy:
 870         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 871  out_free_bf:
 872         if (mvm->bf_allowed_vif == mvmvif) {
 873                 mvm->bf_allowed_vif = NULL;
 874                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
 875                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 876         }
 877  out_remove_mac:
 878         mvmvif->phy_ctxt = NULL;
 879         iwl_mvm_mac_ctxt_remove(mvm, vif);
 880  out_release:
 881         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 882                 mvm->vif_count--;
 883
 884         iwl_mvm_mac_ctxt_release(mvm, vif);
 885  out_unlock:
 886         mutex_unlock(&mvm->mutex);
 887
 888         return ret;
 889 }
 890
 891 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
 892                                         struct ieee80211_vif *vif)
 893 {
 894         u32 tfd_msk = 0, ac;
 895
 896         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 897                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 898                         tfd_msk |= BIT(vif->hw_queue[ac]);
 899
 900         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 901                 tfd_msk |= BIT(vif->cab_queue);
 902
 903         if (tfd_msk) {
 904                 mutex_lock(&mvm->mutex);
 905                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 906                 mutex_unlock(&mvm->mutex);
 907         }
 908
 909         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 910                 /*
 911                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 912                  * We assume here that all the packets sent to the OFFCHANNEL
 913                  * queue are sent in ROC session.
 914                  */
 915                 flush_work(&mvm->roc_done_wk);
 916         } else {
 917                 /*
 918                  * By now, all the AC queues are empty. The AGG queues are
 919                  * empty too. We already got all the Tx responses for all the
 920                  * packets in the queues. The drain work can have been
 921                  * triggered. Flush it.
 922                  */
 923                 flush_work(&mvm->sta_drained_wk);
 924         }
 925 }
 926
 927 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 928                                          struct ieee80211_vif *vif)
 929 {
 930         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 931         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 932
 933         iwl_mvm_prepare_mac_removal(mvm, vif);
 934
 935         mutex_lock(&mvm->mutex);
 936
 937         if (mvm->bf_allowed_vif == mvmvif) {
 938                 mvm->bf_allowed_vif = NULL;
 939                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
 940                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 941         }
 942
 943         iwl_mvm_vif_dbgfs_clean(mvm, vif);
 944
 945         /*
 946          * For AP/GO interface, the tear down of the resources allocated to the
 947          * interface is be handled as part of the stop_ap flow.
 948          */
 949         if (vif->type == NL80211_IFTYPE_AP ||
 950             vif->type == NL80211_IFTYPE_ADHOC) {
 951 #ifdef CONFIG_NL80211_TESTMODE
 952                 if (vif == mvm->noa_vif) {
 953                         mvm->noa_vif = NULL;
 954                         mvm->noa_duration = 0;
 955                 }
 956 #endif
 957                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 958                 goto out_release;
 959         }
 960
 961         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 962                 mvm->p2p_device_vif = NULL;
 963                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 964                 iwl_mvm_binding_remove_vif(mvm, vif);
 965                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 966                 mvmvif->phy_ctxt = NULL;
 967         }
 968
 969         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
 970                 mvm->vif_count--;
 971
 972         iwl_mvm_power_update_mac(mvm, vif);
 973         iwl_mvm_mac_ctxt_remove(mvm, vif);
 974
 975 out_release:
 976         iwl_mvm_mac_ctxt_release(mvm, vif);
 977         mutex_unlock(&mvm->mutex);
 978 }
 979
 980 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 981 {
 982         return 0;
 983 }
 984
 985 struct iwl_mvm_mc_iter_data {
 986         struct iwl_mvm *mvm;
 987         int port_id;
 988 };
 989
 990 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
 991                                       struct ieee80211_vif *vif)
 992 {
 993         struct iwl_mvm_mc_iter_data *data = _data;
 994         struct iwl_mvm *mvm = data->mvm;
 995         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
 996         int ret, len;
 997
 998         /* if we don't have free ports, mcast frames will be dropped */
 999         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1000                 return;
1001
1002         if (vif->type != NL80211_IFTYPE_STATION ||
1003             !vif->bss_conf.assoc)
1004                 return;
1005
1006         cmd->port_id = data->port_id++;
1007         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1008         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1009
1010         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC, len, cmd);
1011         if (ret)
1012                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1013 }
1014
1015 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1016 {
1017         struct iwl_mvm_mc_iter_data iter_data = {
1018                 .mvm = mvm,
1019         };
1020
1021         lockdep_assert_held(&mvm->mutex);
1022
1023         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1024                 return;
1025
1026         ieee80211_iterate_active_interfaces(
1027                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1028                 iwl_mvm_mc_iface_iterator, &iter_data);
1029 }
1030
1031 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1032                                      struct netdev_hw_addr_list *mc_list)
1033 {
1034         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1035         struct iwl_mcast_filter_cmd *cmd;
1036         struct netdev_hw_addr *addr;
1037         int addr_count = netdev_hw_addr_list_count(mc_list);
1038         bool pass_all = false;
1039         int len;
1040
1041         if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1042                 pass_all = true;
1043                 addr_count = 0;
1044         }
1045
1046         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1047         cmd = kzalloc(len, GFP_ATOMIC);
1048         if (!cmd)
1049                 return 0;
1050
1051         if (pass_all) {
1052                 cmd->pass_all = 1;
1053                 return (u64)(unsigned long)cmd;
1054         }
1055
1056         netdev_hw_addr_list_for_each(addr, mc_list) {
1057                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1058                                    cmd->count, addr->addr);
1059                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1060                        addr->addr, ETH_ALEN);
1061                 cmd->count++;
1062         }
1063
1064         return (u64)(unsigned long)cmd;
1065 }
1066
1067 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1068                                      unsigned int changed_flags,
1069                                      unsigned int *total_flags,
1070                                      u64 multicast)
1071 {
1072         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1073         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1074
1075         mutex_lock(&mvm->mutex);
1076
1077         /* replace previous configuration */
1078         kfree(mvm->mcast_filter_cmd);
1079         mvm->mcast_filter_cmd = cmd;
1080
1081         if (!cmd)
1082                 goto out;
1083
1084         iwl_mvm_recalc_multicast(mvm);
1085 out:
1086         mutex_unlock(&mvm->mutex);
1087         *total_flags = 0;
1088 }
1089
1090 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1091 struct iwl_bcast_iter_data {
1092         struct iwl_mvm *mvm;
1093         struct iwl_bcast_filter_cmd *cmd;
1094         u8 current_filter;
1095 };
1096
1097 static void
1098 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1099                          const struct iwl_fw_bcast_filter *in_filter,
1100                          struct iwl_fw_bcast_filter *out_filter)
1101 {
1102         struct iwl_fw_bcast_filter_attr *attr;
1103         int i;
1104
1105         memcpy(out_filter, in_filter, sizeof(*out_filter));
1106
1107         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1108                 attr = &out_filter->attrs[i];
1109
1110                 if (!attr->mask)
1111                         break;
1112
1113                 switch (attr->reserved1) {
1114                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1115                         if (vif->bss_conf.arp_addr_cnt != 1) {
1116                                 attr->mask = 0;
1117                                 continue;
1118                         }
1119
1120                         attr->val = vif->bss_conf.arp_addr_list[0];
1121                         break;
1122                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1123                         attr->val = *(__be32 *)&vif->addr[2];
1124                         break;
1125                 default:
1126                         break;
1127                 }
1128                 attr->reserved1 = 0;
1129                 out_filter->num_attrs++;
1130         }
1131 }
1132
1133 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1134                                           struct ieee80211_vif *vif)
1135 {
1136         struct iwl_bcast_iter_data *data = _data;
1137         struct iwl_mvm *mvm = data->mvm;
1138         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1139         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1140         struct iwl_fw_bcast_mac *bcast_mac;
1141         int i;
1142
1143         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1144                 return;
1145
1146         bcast_mac = &cmd->macs[mvmvif->id];
1147
1148         /* enable filtering only for associated stations */
1149         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1150                 return;
1151
1152         bcast_mac->default_discard = 1;
1153
1154         /* copy all configured filters */
1155         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1156                 /*
1157                  * Make sure we don't exceed our filters limit.
1158                  * if there is still a valid filter to be configured,
1159                  * be on the safe side and just allow bcast for this mac.
1160                  */
1161                 if (WARN_ON_ONCE(data->current_filter >=
1162                                  ARRAY_SIZE(cmd->filters))) {
1163                         bcast_mac->default_discard = 0;
1164                         bcast_mac->attached_filters = 0;
1165                         break;
1166                 }
1167
1168                 iwl_mvm_set_bcast_filter(vif,
1169                                          &mvm->bcast_filters[i],
1170                                          &cmd->filters[data->current_filter]);
1171
1172                 /* skip current filter if it contains no attributes */
1173                 if (!cmd->filters[data->current_filter].num_attrs)
1174                         continue;
1175
1176                 /* attach the filter to current mac */
1177                 bcast_mac->attached_filters |=
1178                                 cpu_to_le16(BIT(data->current_filter));
1179
1180                 data->current_filter++;
1181         }
1182 }
1183
1184 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1185                                     struct iwl_bcast_filter_cmd *cmd)
1186 {
1187         struct iwl_bcast_iter_data iter_data = {
1188                 .mvm = mvm,
1189                 .cmd = cmd,
1190         };
1191
1192         memset(cmd, 0, sizeof(*cmd));
1193         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1194         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1195
1196 #ifdef CONFIG_IWLWIFI_DEBUGFS
1197         /* use debugfs filters/macs if override is configured */
1198         if (mvm->dbgfs_bcast_filtering.override) {
1199                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1200                        sizeof(cmd->filters));
1201                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1202                        sizeof(cmd->macs));
1203                 return true;
1204         }
1205 #endif
1206
1207         /* if no filters are configured, do nothing */
1208         if (!mvm->bcast_filters)
1209                 return false;
1210
1211         /* configure and attach these filters for each associated sta vif */
1212         ieee80211_iterate_active_interfaces(
1213                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1214                 iwl_mvm_bcast_filter_iterator, &iter_data);
1215
1216         return true;
1217 }
1218 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1219                                           struct ieee80211_vif *vif)
1220 {
1221         struct iwl_bcast_filter_cmd cmd;
1222
1223         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1224                 return 0;
1225
1226         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1227                 return 0;
1228
1229         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, CMD_SYNC,
1230                                     sizeof(cmd), &cmd);
1231 }
1232 #else
1233 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1234                                                  struct ieee80211_vif *vif)
1235 {
1236         return 0;
1237 }
1238 #endif
1239
1240 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1241                                              struct ieee80211_vif *vif,
1242                                              struct ieee80211_bss_conf *bss_conf,
1243                                              u32 changes)
1244 {
1245         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1246         int ret;
1247
1248         /*
1249          * Re-calculate the tsf id, as the master-slave relations depend on the
1250          * beacon interval, which was not known when the station interface was
1251          * added.
1252          */
1253         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1254                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1255
1256         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1257         if (ret)
1258                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1259
1260         if (changes & BSS_CHANGED_ASSOC) {
1261                 if (bss_conf->assoc) {
1262                         /* add quota for this interface */
1263                         ret = iwl_mvm_update_quotas(mvm, vif);
1264                         if (ret) {
1265                                 IWL_ERR(mvm, "failed to update quotas\n");
1266                                 return;
1267                         }
1268
1269                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1270                                      &mvm->status)) {
1271                                 /*
1272                                  * If we're restarting then the firmware will
1273                                  * obviously have lost synchronisation with
1274                                  * the AP. It will attempt to synchronise by
1275                                  * itself, but we can make it more reliable by
1276                                  * scheduling a session protection time event.
1277                                  *
1278                                  * The firmware needs to receive a beacon to
1279                                  * catch up with synchronisation, use 110% of
1280                                  * the beacon interval.
1281                                  *
1282                                  * Set a large maximum delay to allow for more
1283                                  * than a single interface.
1284                                  */
1285                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1286                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1287                                                         5 * dur);
1288                         }
1289
1290                         iwl_mvm_sf_update(mvm, vif, false);
1291                         iwl_mvm_power_vif_assoc(mvm, vif);
1292                         if (vif->p2p)
1293                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1294                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1295                         /*
1296                          * If update fails - SF might be running in associated
1297                          * mode while disassociated - which is forbidden.
1298                          */
1299                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1300                                   "Failed to update SF upon disassociation\n");
1301
1302                         /* remove AP station now that the MAC is unassoc */
1303                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1304                         if (ret)
1305                                 IWL_ERR(mvm, "failed to remove AP station\n");
1306
1307                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1308                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1309                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1310                         /* remove quota for this interface */
1311                         ret = iwl_mvm_update_quotas(mvm, NULL);
1312                         if (ret)
1313                                 IWL_ERR(mvm, "failed to update quotas\n");
1314
1315                         if (vif->p2p)
1316                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1317                 }
1318
1319                 iwl_mvm_recalc_multicast(mvm);
1320                 iwl_mvm_configure_bcast_filter(mvm, vif);
1321
1322                 /* reset rssi values */
1323                 mvmvif->bf_data.ave_beacon_signal = 0;
1324
1325                 iwl_mvm_bt_coex_vif_change(mvm);
1326                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1327                                     IEEE80211_SMPS_AUTOMATIC);
1328         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1329                 /*
1330                  * We received a beacon _after_ association so
1331                  * remove the session protection.
1332                  */
1333                 iwl_mvm_remove_time_event(mvm, mvmvif,
1334                                           &mvmvif->time_event_data);
1335                 iwl_mvm_sf_update(mvm, vif, false);
1336                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, CMD_SYNC));
1337         } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1338                               BSS_CHANGED_QOS)) {
1339                 ret = iwl_mvm_power_update_mac(mvm, vif);
1340                 if (ret)
1341                         IWL_ERR(mvm, "failed to update power mode\n");
1342         }
1343         if (changes & BSS_CHANGED_TXPOWER) {
1344                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1345                                 bss_conf->txpower);
1346                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1347         }
1348
1349         if (changes & BSS_CHANGED_CQM) {
1350                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed");
1351                 /* reset cqm events tracking */
1352                 mvmvif->bf_data.last_cqm_event = 0;
1353                 ret = iwl_mvm_update_beacon_filter(mvm, vif, false, CMD_SYNC);
1354                 if (ret)
1355                         IWL_ERR(mvm, "failed to update CQM thresholds\n");
1356         }
1357
1358         if (changes & BSS_CHANGED_ARP_FILTER) {
1359                 IWL_DEBUG_MAC80211(mvm, "arp filter changed");
1360                 iwl_mvm_configure_bcast_filter(mvm, vif);
1361         }
1362 }
1363
1364 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1365                                  struct ieee80211_vif *vif)
1366 {
1367         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1368         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1369         int ret;
1370
1371         mutex_lock(&mvm->mutex);
1372
1373         /* Send the beacon template */
1374         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1375         if (ret)
1376                 goto out_unlock;
1377
1378         /*
1379          * Re-calculate the tsf id, as the master-slave relations depend on the
1380          * beacon interval, which was not known when the AP interface was added.
1381          */
1382         if (vif->type == NL80211_IFTYPE_AP)
1383                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1384
1385         /* Add the mac context */
1386         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1387         if (ret)
1388                 goto out_unlock;
1389
1390         /* Perform the binding */
1391         ret = iwl_mvm_binding_add_vif(mvm, vif);
1392         if (ret)
1393                 goto out_remove;
1394
1395         /* Send the bcast station. At this stage the TBTT and DTIM time events
1396          * are added and applied to the scheduler */
1397         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1398         if (ret)
1399                 goto out_unbind;
1400
1401         /* must be set before quota calculations */
1402         mvmvif->ap_ibss_active = true;
1403
1404         /* power updated needs to be done before quotas */
1405         iwl_mvm_power_update_mac(mvm, vif);
1406
1407         ret = iwl_mvm_update_quotas(mvm, vif);
1408         if (ret)
1409                 goto out_quota_failed;
1410
1411         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1412         if (vif->p2p && mvm->p2p_device_vif)
1413                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1414
1415         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1416
1417         iwl_mvm_bt_coex_vif_change(mvm);
1418
1419         mutex_unlock(&mvm->mutex);
1420         return 0;
1421
1422 out_quota_failed:
1423         iwl_mvm_power_update_mac(mvm, vif);
1424         mvmvif->ap_ibss_active = false;
1425         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1426 out_unbind:
1427         iwl_mvm_binding_remove_vif(mvm, vif);
1428 out_remove:
1429         iwl_mvm_mac_ctxt_remove(mvm, vif);
1430 out_unlock:
1431         mutex_unlock(&mvm->mutex);
1432         return ret;
1433 }
1434
1435 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1436                                  struct ieee80211_vif *vif)
1437 {
1438         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1439         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1440
1441         iwl_mvm_prepare_mac_removal(mvm, vif);
1442
1443         mutex_lock(&mvm->mutex);
1444
1445         mvmvif->ap_ibss_active = false;
1446
1447         iwl_mvm_bt_coex_vif_change(mvm);
1448
1449         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1450
1451         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1452         if (vif->p2p && mvm->p2p_device_vif)
1453                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1454
1455         iwl_mvm_update_quotas(mvm, NULL);
1456         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1457         iwl_mvm_binding_remove_vif(mvm, vif);
1458
1459         iwl_mvm_power_update_mac(mvm, vif);
1460
1461         iwl_mvm_mac_ctxt_remove(mvm, vif);
1462
1463         mutex_unlock(&mvm->mutex);
1464 }
1465
1466 static void
1467 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1468                                  struct ieee80211_vif *vif,
1469                                  struct ieee80211_bss_conf *bss_conf,
1470                                  u32 changes)
1471 {
1472         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1473
1474         /* Changes will be applied when the AP/IBSS is started */
1475         if (!mvmvif->ap_ibss_active)
1476                 return;
1477
1478         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1479                        BSS_CHANGED_BANDWIDTH) &&
1480             iwl_mvm_mac_ctxt_changed(mvm, vif))
1481                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1482
1483         /* Need to send a new beacon template to the FW */
1484         if (changes & BSS_CHANGED_BEACON &&
1485             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1486                 IWL_WARN(mvm, "Failed updating beacon data\n");
1487 }
1488
1489 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1490                                      struct ieee80211_vif *vif,
1491                                      struct ieee80211_bss_conf *bss_conf,
1492                                      u32 changes)
1493 {
1494         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1495
1496         mutex_lock(&mvm->mutex);
1497
1498         switch (vif->type) {
1499         case NL80211_IFTYPE_STATION:
1500                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1501                 break;
1502         case NL80211_IFTYPE_AP:
1503         case NL80211_IFTYPE_ADHOC:
1504                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1505                 break;
1506         default:
1507                 /* shouldn't happen */
1508                 WARN_ON_ONCE(1);
1509         }
1510
1511         mutex_unlock(&mvm->mutex);
1512 }
1513
1514 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1515                                struct ieee80211_vif *vif,
1516                                struct cfg80211_scan_request *req)
1517 {
1518         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1519         int ret;
1520
1521         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
1522                 return -EINVAL;
1523
1524         mutex_lock(&mvm->mutex);
1525
1526         switch (mvm->scan_status) {
1527         case IWL_MVM_SCAN_SCHED:
1528                 ret = iwl_mvm_sched_scan_stop(mvm);
1529                 if (ret) {
1530                         ret = -EBUSY;
1531                         goto out;
1532                 }
1533                 break;
1534         case IWL_MVM_SCAN_NONE:
1535                 break;
1536         default:
1537                 ret = -EBUSY;
1538                 goto out;
1539         }
1540
1541         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1542
1543         ret = iwl_mvm_scan_request(mvm, vif, req);
1544         if (ret)
1545                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1546 out:
1547         mutex_unlock(&mvm->mutex);
1548         /* make sure to flush the Rx handler before the next scan arrives */
1549         iwl_mvm_wait_for_async_handlers(mvm);
1550         return ret;
1551 }
1552
1553 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1554                                        struct ieee80211_vif *vif)
1555 {
1556         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1557
1558         mutex_lock(&mvm->mutex);
1559
1560         iwl_mvm_cancel_scan(mvm);
1561
1562         mutex_unlock(&mvm->mutex);
1563 }
1564
1565 static void
1566 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1567                                   struct ieee80211_sta *sta, u16 tids,
1568                                   int num_frames,
1569                                   enum ieee80211_frame_release_type reason,
1570                                   bool more_data)
1571 {
1572         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1573
1574         /* Called when we need to transmit (a) frame(s) from mac80211 */
1575
1576         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1577                                           tids, more_data, false);
1578 }
1579
1580 static void
1581 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1582                                     struct ieee80211_sta *sta, u16 tids,
1583                                     int num_frames,
1584                                     enum ieee80211_frame_release_type reason,
1585                                     bool more_data)
1586 {
1587         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1588
1589         /* Called when we need to transmit (a) frame(s) from agg queue */
1590
1591         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1592                                           tids, more_data, true);
1593 }
1594
1595 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1596                                    struct ieee80211_vif *vif,
1597                                    enum sta_notify_cmd cmd,
1598                                    struct ieee80211_sta *sta)
1599 {
1600         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1601         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1602         int tid;
1603
1604         switch (cmd) {
1605         case STA_NOTIFY_SLEEP:
1606                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1607                         ieee80211_sta_block_awake(hw, sta, true);
1608                 spin_lock_bh(&mvmsta->lock);
1609                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1610                         struct iwl_mvm_tid_data *tid_data;
1611
1612                         tid_data = &mvmsta->tid_data[tid];
1613                         if (tid_data->state != IWL_AGG_ON &&
1614                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1615                                 continue;
1616                         if (iwl_mvm_tid_queued(tid_data) == 0)
1617                                 continue;
1618                         ieee80211_sta_set_buffered(sta, tid, true);
1619                 }
1620                 spin_unlock_bh(&mvmsta->lock);
1621                 /*
1622                  * The fw updates the STA to be asleep. Tx packets on the Tx
1623                  * queues to this station will not be transmitted. The fw will
1624                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1625                  */
1626                 break;
1627         case STA_NOTIFY_AWAKE:
1628                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1629                         break;
1630                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1631                 break;
1632         default:
1633                 break;
1634         }
1635 }
1636
1637 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1638                                        struct ieee80211_vif *vif,
1639                                        struct ieee80211_sta *sta)
1640 {
1641         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1642         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1643
1644         /*
1645          * This is called before mac80211 does RCU synchronisation,
1646          * so here we already invalidate our internal RCU-protected
1647          * station pointer. The rest of the code will thus no longer
1648          * be able to find the station this way, and we don't rely
1649          * on further RCU synchronisation after the sta_state()
1650          * callback deleted the station.
1651          */
1652         mutex_lock(&mvm->mutex);
1653         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1654                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1655                                    ERR_PTR(-ENOENT));
1656         mutex_unlock(&mvm->mutex);
1657 }
1658
1659 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1660                                  struct ieee80211_vif *vif,
1661                                  struct ieee80211_sta *sta,
1662                                  enum ieee80211_sta_state old_state,
1663                                  enum ieee80211_sta_state new_state)
1664 {
1665         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1666         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1667         int ret;
1668
1669         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1670                            sta->addr, old_state, new_state);
1671
1672         /* this would be a mac80211 bug ... but don't crash */
1673         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1674                 return -EINVAL;
1675
1676         /* if a STA is being removed, reuse its ID */
1677         flush_work(&mvm->sta_drained_wk);
1678
1679         mutex_lock(&mvm->mutex);
1680         if (old_state == IEEE80211_STA_NOTEXIST &&
1681             new_state == IEEE80211_STA_NONE) {
1682                 /*
1683                  * Firmware bug - it'll crash if the beacon interval is less
1684                  * than 16. We can't avoid connecting at all, so refuse the
1685                  * station state change, this will cause mac80211 to abandon
1686                  * attempts to connect to this AP, and eventually wpa_s will
1687                  * blacklist the AP...
1688                  */
1689                 if (vif->type == NL80211_IFTYPE_STATION &&
1690                     vif->bss_conf.beacon_int < 16) {
1691                         IWL_ERR(mvm,
1692                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1693                                 sta->addr, vif->bss_conf.beacon_int);
1694                         ret = -EINVAL;
1695                         goto out_unlock;
1696                 }
1697                 ret = iwl_mvm_add_sta(mvm, vif, sta);
1698         } else if (old_state == IEEE80211_STA_NONE &&
1699                    new_state == IEEE80211_STA_AUTH) {
1700                 ret = 0;
1701         } else if (old_state == IEEE80211_STA_AUTH &&
1702                    new_state == IEEE80211_STA_ASSOC) {
1703                 ret = iwl_mvm_update_sta(mvm, vif, sta);
1704                 if (ret == 0)
1705                         iwl_mvm_rs_rate_init(mvm, sta,
1706                                              mvmvif->phy_ctxt->channel->band,
1707                                              true);
1708         } else if (old_state == IEEE80211_STA_ASSOC &&
1709                    new_state == IEEE80211_STA_AUTHORIZED) {
1710                 /* enable beacon filtering */
1711                 if (vif->bss_conf.dtim_period)
1712                         WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif,
1713                                                              CMD_SYNC));
1714                 ret = 0;
1715         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1716                    new_state == IEEE80211_STA_ASSOC) {
1717                 /* disable beacon filtering */
1718                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC));
1719                 ret = 0;
1720         } else if (old_state == IEEE80211_STA_ASSOC &&
1721                    new_state == IEEE80211_STA_AUTH) {
1722                 ret = 0;
1723         } else if (old_state == IEEE80211_STA_AUTH &&
1724                    new_state == IEEE80211_STA_NONE) {
1725                 ret = 0;
1726         } else if (old_state == IEEE80211_STA_NONE &&
1727                    new_state == IEEE80211_STA_NOTEXIST) {
1728                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1729         } else {
1730                 ret = -EIO;
1731         }
1732  out_unlock:
1733         mutex_unlock(&mvm->mutex);
1734
1735         return ret;
1736 }
1737
1738 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1739 {
1740         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1741
1742         mvm->rts_threshold = value;
1743
1744         return 0;
1745 }
1746
1747 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1748                                   struct ieee80211_vif *vif,
1749                                   struct ieee80211_sta *sta, u32 changed)
1750 {
1751         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1752
1753         if (vif->type == NL80211_IFTYPE_STATION &&
1754             changed & IEEE80211_RC_NSS_CHANGED)
1755                 iwl_mvm_sf_update(mvm, vif, false);
1756 }
1757
1758 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1759                                struct ieee80211_vif *vif, u16 ac,
1760                                const struct ieee80211_tx_queue_params *params)
1761 {
1762         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1763         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1764
1765         mvmvif->queue_params[ac] = *params;
1766
1767         /*
1768          * No need to update right away, we'll get BSS_CHANGED_QOS
1769          * The exception is P2P_DEVICE interface which needs immediate update.
1770          */
1771         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1772                 int ret;
1773
1774                 mutex_lock(&mvm->mutex);
1775                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1776                 mutex_unlock(&mvm->mutex);
1777                 return ret;
1778         }
1779         return 0;
1780 }
1781
1782 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1783                                       struct ieee80211_vif *vif)
1784 {
1785         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1786         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1787                            200 + vif->bss_conf.beacon_int);
1788         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1789                                100 + vif->bss_conf.beacon_int);
1790
1791         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1792                 return;
1793
1794         mutex_lock(&mvm->mutex);
1795         /* Try really hard to protect the session and hear a beacon */
1796         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
1797         mutex_unlock(&mvm->mutex);
1798 }
1799
1800 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
1801                                         struct ieee80211_vif *vif,
1802                                         struct cfg80211_sched_scan_request *req,
1803                                         struct ieee80211_sched_scan_ies *ies)
1804 {
1805         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1806         int ret;
1807
1808         mutex_lock(&mvm->mutex);
1809
1810         switch (mvm->scan_status) {
1811         case IWL_MVM_SCAN_OS:
1812                 IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
1813                 ret = iwl_mvm_cancel_scan(mvm);
1814                 if (ret) {
1815                         ret = -EBUSY;
1816                         goto out;
1817                 }
1818
1819                 /*
1820                  * iwl_mvm_rx_scan_complete() will be called soon but will
1821                  * not reset the scan status as it won't be IWL_MVM_SCAN_OS
1822                  * any more since we queue the next scan immediately (below).
1823                  * We make sure it is called before the next scan starts by
1824                  * flushing the async-handlers work.
1825                  */
1826                 break;
1827         case IWL_MVM_SCAN_NONE:
1828                 break;
1829         default:
1830                 ret = -EBUSY;
1831                 goto out;
1832         }
1833
1834         mvm->scan_status = IWL_MVM_SCAN_SCHED;
1835
1836         ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1837         if (ret)
1838                 goto err;
1839
1840         ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1841         if (ret)
1842                 goto err;
1843
1844         ret = iwl_mvm_sched_scan_start(mvm, req);
1845         if (!ret)
1846                 goto out;
1847 err:
1848         mvm->scan_status = IWL_MVM_SCAN_NONE;
1849 out:
1850         mutex_unlock(&mvm->mutex);
1851         /* make sure to flush the Rx handler before the next scan arrives */
1852         iwl_mvm_wait_for_async_handlers(mvm);
1853         return ret;
1854 }
1855
1856 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
1857                                        struct ieee80211_vif *vif)
1858 {
1859         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1860         int ret;
1861
1862         mutex_lock(&mvm->mutex);
1863         ret = iwl_mvm_sched_scan_stop(mvm);
1864         mutex_unlock(&mvm->mutex);
1865         iwl_mvm_wait_for_async_handlers(mvm);
1866
1867         return ret;
1868 }
1869
1870 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1871                                enum set_key_cmd cmd,
1872                                struct ieee80211_vif *vif,
1873                                struct ieee80211_sta *sta,
1874                                struct ieee80211_key_conf *key)
1875 {
1876         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1877         int ret;
1878
1879         if (iwlwifi_mod_params.sw_crypto) {
1880                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1881                 return -EOPNOTSUPP;
1882         }
1883
1884         switch (key->cipher) {
1885         case WLAN_CIPHER_SUITE_TKIP:
1886                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1887                 /* fall-through */
1888         case WLAN_CIPHER_SUITE_CCMP:
1889                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1890                 break;
1891         case WLAN_CIPHER_SUITE_AES_CMAC:
1892                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1893                 break;
1894         case WLAN_CIPHER_SUITE_WEP40:
1895         case WLAN_CIPHER_SUITE_WEP104:
1896                 /*
1897                  * Support for TX only, at least for now, so accept
1898                  * the key and do nothing else. Then mac80211 will
1899                  * pass it for TX but we don't have to use it for RX.
1900                  */
1901                 return 0;
1902         default:
1903                 /* currently FW supports only one optional cipher scheme */
1904                 if (hw->n_cipher_schemes &&
1905                     hw->cipher_schemes->cipher == key->cipher)
1906                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
1907                 else
1908                         return -EOPNOTSUPP;
1909         }
1910
1911         mutex_lock(&mvm->mutex);
1912
1913         switch (cmd) {
1914         case SET_KEY:
1915                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1916                      vif->type == NL80211_IFTYPE_AP) && !sta) {
1917                         /*
1918                          * GTK on AP interface is a TX-only key, return 0;
1919                          * on IBSS they're per-station and because we're lazy
1920                          * we don't support them for RX, so do the same.
1921                          */
1922                         ret = 0;
1923                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1924                         break;
1925                 }
1926
1927                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1928                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1929                 if (ret) {
1930                         IWL_WARN(mvm, "set key failed\n");
1931                         /*
1932                          * can't add key for RX, but we don't need it
1933                          * in the device for TX so still return 0
1934                          */
1935                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1936                         ret = 0;
1937                 }
1938
1939                 break;
1940         case DISABLE_KEY:
1941                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1942                         ret = 0;
1943                         break;
1944                 }
1945
1946                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1947                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1948                 break;
1949         default:
1950                 ret = -EINVAL;
1951         }
1952
1953         mutex_unlock(&mvm->mutex);
1954         return ret;
1955 }
1956
1957 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1958                                         struct ieee80211_vif *vif,
1959                                         struct ieee80211_key_conf *keyconf,
1960                                         struct ieee80211_sta *sta,
1961                                         u32 iv32, u16 *phase1key)
1962 {
1963         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1964
1965         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1966                 return;
1967
1968         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1969 }
1970
1971
1972 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1973                        struct ieee80211_vif *vif,
1974                        struct ieee80211_channel *channel,
1975                        int duration,
1976                        enum ieee80211_roc_type type)
1977 {
1978         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1979         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1980         struct cfg80211_chan_def chandef;
1981         struct iwl_mvm_phy_ctxt *phy_ctxt;
1982         int ret, i;
1983
1984         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1985                            duration, type);
1986
1987         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1988                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1989                 return -EINVAL;
1990         }
1991
1992         mutex_lock(&mvm->mutex);
1993
1994         for (i = 0; i < NUM_PHY_CTX; i++) {
1995                 phy_ctxt = &mvm->phy_ctxts[i];
1996                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1997                         continue;
1998
1999                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2000                         /*
2001                          * Unbind the P2P_DEVICE from the current PHY context,
2002                          * and if the PHY context is not used remove it.
2003                          */
2004                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2005                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2006                                 goto out_unlock;
2007
2008                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2009
2010                         /* Bind the P2P_DEVICE to the current PHY Context */
2011                         mvmvif->phy_ctxt = phy_ctxt;
2012
2013                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2014                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2015                                 goto out_unlock;
2016
2017                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2018                         goto schedule_time_event;
2019                 }
2020         }
2021
2022         /* Need to update the PHY context only if the ROC channel changed */
2023         if (channel == mvmvif->phy_ctxt->channel)
2024                 goto schedule_time_event;
2025
2026         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2027
2028         /*
2029          * Change the PHY context configuration as it is currently referenced
2030          * only by the P2P Device MAC
2031          */
2032         if (mvmvif->phy_ctxt->ref == 1) {
2033                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2034                                                &chandef, 1, 1);
2035                 if (ret)
2036                         goto out_unlock;
2037         } else {
2038                 /*
2039                  * The PHY context is shared with other MACs. Need to remove the
2040                  * P2P Device from the binding, allocate an new PHY context and
2041                  * create a new binding
2042                  */
2043                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2044                 if (!phy_ctxt) {
2045                         ret = -ENOSPC;
2046                         goto out_unlock;
2047                 }
2048
2049                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2050                                                1, 1);
2051                 if (ret) {
2052                         IWL_ERR(mvm, "Failed to change PHY context\n");
2053                         goto out_unlock;
2054                 }
2055
2056                 /* Unbind the P2P_DEVICE from the current PHY context */
2057                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2058                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2059                         goto out_unlock;
2060
2061                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2062
2063                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2064                 mvmvif->phy_ctxt = phy_ctxt;
2065
2066                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2067                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2068                         goto out_unlock;
2069
2070                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2071         }
2072
2073 schedule_time_event:
2074         /* Schedule the time events */
2075         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2076
2077 out_unlock:
2078         mutex_unlock(&mvm->mutex);
2079         IWL_DEBUG_MAC80211(mvm, "leave\n");
2080         return ret;
2081 }
2082
2083 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2084 {
2085         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2086
2087         IWL_DEBUG_MAC80211(mvm, "enter\n");
2088
2089         mutex_lock(&mvm->mutex);
2090         iwl_mvm_stop_p2p_roc(mvm);
2091         mutex_unlock(&mvm->mutex);
2092
2093         IWL_DEBUG_MAC80211(mvm, "leave\n");
2094         return 0;
2095 }
2096
2097 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2098                                struct ieee80211_chanctx_conf *ctx)
2099 {
2100         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2101         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2102         struct iwl_mvm_phy_ctxt *phy_ctxt;
2103         int ret;
2104
2105         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2106
2107         mutex_lock(&mvm->mutex);
2108         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2109         if (!phy_ctxt) {
2110                 ret = -ENOSPC;
2111                 goto out;
2112         }
2113
2114         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2115                                        ctx->rx_chains_static,
2116                                        ctx->rx_chains_dynamic);
2117         if (ret) {
2118                 IWL_ERR(mvm, "Failed to add PHY context\n");
2119                 goto out;
2120         }
2121
2122         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2123         *phy_ctxt_id = phy_ctxt->id;
2124 out:
2125         mutex_unlock(&mvm->mutex);
2126         return ret;
2127 }
2128
2129 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2130                                    struct ieee80211_chanctx_conf *ctx)
2131 {
2132         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2133         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2134         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2135
2136         mutex_lock(&mvm->mutex);
2137         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2138         mutex_unlock(&mvm->mutex);
2139 }
2140
2141 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2142                                    struct ieee80211_chanctx_conf *ctx,
2143                                    u32 changed)
2144 {
2145         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2146         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2147         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2148
2149         if (WARN_ONCE((phy_ctxt->ref > 1) &&
2150                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2151                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2152                                    IEEE80211_CHANCTX_CHANGE_RADAR |
2153                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2154                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
2155                       phy_ctxt->ref, changed))
2156                 return;
2157
2158         mutex_lock(&mvm->mutex);
2159         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2160                                  ctx->rx_chains_static,
2161                                  ctx->rx_chains_dynamic);
2162         iwl_mvm_bt_coex_vif_change(mvm);
2163         mutex_unlock(&mvm->mutex);
2164 }
2165
2166 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2167                                       struct ieee80211_vif *vif,
2168                                       struct ieee80211_chanctx_conf *ctx)
2169 {
2170         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2171         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2172         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2173         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2174         int ret;
2175
2176         mutex_lock(&mvm->mutex);
2177
2178         mvmvif->phy_ctxt = phy_ctxt;
2179
2180         switch (vif->type) {
2181         case NL80211_IFTYPE_AP:
2182         case NL80211_IFTYPE_ADHOC:
2183                 /*
2184                  * The AP binding flow is handled as part of the start_ap flow
2185                  * (in bss_info_changed), similarly for IBSS.
2186                  */
2187                 ret = 0;
2188                 goto out_unlock;
2189         case NL80211_IFTYPE_STATION:
2190         case NL80211_IFTYPE_MONITOR:
2191                 break;
2192         default:
2193                 ret = -EINVAL;
2194                 goto out_unlock;
2195         }
2196
2197         ret = iwl_mvm_binding_add_vif(mvm, vif);
2198         if (ret)
2199                 goto out_unlock;
2200
2201         /*
2202          * Power state must be updated before quotas,
2203          * otherwise fw will complain.
2204          */
2205         iwl_mvm_power_update_mac(mvm, vif);
2206
2207         /* Setting the quota at this stage is only required for monitor
2208          * interfaces. For the other types, the bss_info changed flow
2209          * will handle quota settings.
2210          */
2211         if (vif->type == NL80211_IFTYPE_MONITOR) {
2212                 mvmvif->monitor_active = true;
2213                 ret = iwl_mvm_update_quotas(mvm, vif);
2214                 if (ret)
2215                         goto out_remove_binding;
2216         }
2217
2218         goto out_unlock;
2219
2220  out_remove_binding:
2221         iwl_mvm_binding_remove_vif(mvm, vif);
2222         iwl_mvm_power_update_mac(mvm, vif);
2223  out_unlock:
2224         mutex_unlock(&mvm->mutex);
2225         if (ret)
2226                 mvmvif->phy_ctxt = NULL;
2227         return ret;
2228 }
2229
2230 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2231                                          struct ieee80211_vif *vif,
2232                                          struct ieee80211_chanctx_conf *ctx)
2233 {
2234         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2235         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2236
2237         mutex_lock(&mvm->mutex);
2238
2239         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2240
2241         switch (vif->type) {
2242         case NL80211_IFTYPE_AP:
2243         case NL80211_IFTYPE_ADHOC:
2244                 goto out_unlock;
2245         case NL80211_IFTYPE_MONITOR:
2246                 mvmvif->monitor_active = false;
2247                 iwl_mvm_update_quotas(mvm, NULL);
2248                 break;
2249         default:
2250                 break;
2251         }
2252
2253         iwl_mvm_binding_remove_vif(mvm, vif);
2254         iwl_mvm_power_update_mac(mvm, vif);
2255
2256 out_unlock:
2257         mvmvif->phy_ctxt = NULL;
2258         mutex_unlock(&mvm->mutex);
2259 }
2260
2261 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2262                            struct ieee80211_sta *sta,
2263                            bool set)
2264 {
2265         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2266         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2267
2268         if (!mvm_sta || !mvm_sta->vif) {
2269                 IWL_ERR(mvm, "Station is not associated to a vif\n");
2270                 return -EINVAL;
2271         }
2272
2273         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2274 }
2275
2276 #ifdef CONFIG_NL80211_TESTMODE
2277 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2278         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2279         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2280         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2281 };
2282
2283 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2284                                       struct ieee80211_vif *vif,
2285                                       void *data, int len)
2286 {
2287         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2288         int err;
2289         u32 noa_duration;
2290
2291         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2292         if (err)
2293                 return err;
2294
2295         if (!tb[IWL_MVM_TM_ATTR_CMD])
2296                 return -EINVAL;
2297
2298         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2299         case IWL_MVM_TM_CMD_SET_NOA:
2300                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2301                     !vif->bss_conf.enable_beacon ||
2302                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2303                         return -EINVAL;
2304
2305                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2306                 if (noa_duration >= vif->bss_conf.beacon_int)
2307                         return -EINVAL;
2308
2309                 mvm->noa_duration = noa_duration;
2310                 mvm->noa_vif = vif;
2311
2312                 return iwl_mvm_update_quotas(mvm, NULL);
2313         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2314                 /* must be associated client vif - ignore authorized */
2315                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2316                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2317                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2318                         return -EINVAL;
2319
2320                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2321                         return iwl_mvm_enable_beacon_filter(mvm, vif,
2322                                                             CMD_SYNC);
2323                 return iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
2324         }
2325
2326         return -EOPNOTSUPP;
2327 }
2328
2329 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2330                                     struct ieee80211_vif *vif,
2331                                     void *data, int len)
2332 {
2333         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2334         int err;
2335
2336         mutex_lock(&mvm->mutex);
2337         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2338         mutex_unlock(&mvm->mutex);
2339
2340         return err;
2341 }
2342 #endif
2343
2344 const struct ieee80211_ops iwl_mvm_hw_ops = {
2345         .tx = iwl_mvm_mac_tx,
2346         .ampdu_action = iwl_mvm_mac_ampdu_action,
2347         .start = iwl_mvm_mac_start,
2348         .restart_complete = iwl_mvm_mac_restart_complete,
2349         .stop = iwl_mvm_mac_stop,
2350         .add_interface = iwl_mvm_mac_add_interface,
2351         .remove_interface = iwl_mvm_mac_remove_interface,
2352         .config = iwl_mvm_mac_config,
2353         .prepare_multicast = iwl_mvm_prepare_multicast,
2354         .configure_filter = iwl_mvm_configure_filter,
2355         .bss_info_changed = iwl_mvm_bss_info_changed,
2356         .hw_scan = iwl_mvm_mac_hw_scan,
2357         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
2358         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
2359         .sta_state = iwl_mvm_mac_sta_state,
2360         .sta_notify = iwl_mvm_mac_sta_notify,
2361         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
2362         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
2363         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
2364         .sta_rc_update = iwl_mvm_sta_rc_update,
2365         .conf_tx = iwl_mvm_mac_conf_tx,
2366         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
2367         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
2368         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
2369         .set_key = iwl_mvm_mac_set_key,
2370         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
2371         .remain_on_channel = iwl_mvm_roc,
2372         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
2373         .add_chanctx = iwl_mvm_add_chanctx,
2374         .remove_chanctx = iwl_mvm_remove_chanctx,
2375         .change_chanctx = iwl_mvm_change_chanctx,
2376         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
2377         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
2378
2379         .start_ap = iwl_mvm_start_ap_ibss,
2380         .stop_ap = iwl_mvm_stop_ap_ibss,
2381         .join_ibss = iwl_mvm_start_ap_ibss,
2382         .leave_ibss = iwl_mvm_stop_ap_ibss,
2383
2384         .set_tim = iwl_mvm_set_tim,
2385
2386         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
2387
2388 #ifdef CONFIG_PM_SLEEP
2389         /* look at d3.c */
2390         .suspend = iwl_mvm_suspend,
2391         .resume = iwl_mvm_resume,
2392         .set_wakeup = iwl_mvm_set_wakeup,
2393         .set_rekey_data = iwl_mvm_set_rekey_data,
2394 #if IS_ENABLED(CONFIG_IPV6)
2395         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
2396 #endif
2397         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
2398 #endif
2399 };