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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018        Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
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  20  * General Public License for more details.
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  22  * The full GNU General Public License is included in this distribution
  23  * in the file called COPYING.
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  30  *
  31  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  32  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  33  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  34  * Copyright(c) 2018        Intel Corporation
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  38  * modification, are permitted provided that the following conditions
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  42  *    notice, this list of conditions and the following disclaimer.
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  48  *    contributors may be used to endorse or promote products derived
  49  *    from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  52  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  53  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  54  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  55  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  56  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  60  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  61  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  62  *
  63  *****************************************************************************/
  64 #include <linux/kernel.h>
  65 #include <linux/slab.h>
  66 #include <linux/skbuff.h>
  67 #include <linux/netdevice.h>
  68 #include <linux/etherdevice.h>
  69 #include <linux/ip.h>
  70 #include <linux/if_arp.h>
  71 #include <linux/time.h>
  72 #include <net/mac80211.h>
  73 #include <net/ieee80211_radiotap.h>
  74 #include <net/tcp.h>
  75
  76 #include "iwl-op-mode.h"
  77 #include "iwl-io.h"
  78 #include "mvm.h"
  79 #include "sta.h"
  80 #include "time-event.h"
  81 #include "iwl-eeprom-parse.h"
  82 #include "iwl-phy-db.h"
  83 #include "testmode.h"
  84 #include "fw/error-dump.h"
  85 #include "iwl-prph.h"
  86 #include "iwl-nvm-parse.h"
  87
  88 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  89         {
  90                 .max = 1,
  91                 .types = BIT(NL80211_IFTYPE_STATION),
  92         },
  93         {
  94                 .max = 1,
  95                 .types = BIT(NL80211_IFTYPE_AP) |
  96                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  97                         BIT(NL80211_IFTYPE_P2P_GO),
  98         },
  99         {
 100                 .max = 1,
 101                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 102         },
 103 };
 104
 105 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 106         {
 107                 .num_different_channels = 2,
 108                 .max_interfaces = 3,
 109                 .limits = iwl_mvm_limits,
 110                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 111         },
 112 };
 113
 114 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 115 /*
 116  * Use the reserved field to indicate magic values.
 117  * these values will only be used internally by the driver,
 118  * and won't make it to the fw (reserved will be 0).
 119  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 120  *      be the vif's ip address. in case there is not a single
 121  *      ip address (0, or more than 1), this attribute will
 122  *      be skipped.
 123  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 124  *      the LSB bytes of the vif's mac address
 125  */
 126 enum {
 127         BC_FILTER_MAGIC_NONE = 0,
 128         BC_FILTER_MAGIC_IP,
 129         BC_FILTER_MAGIC_MAC,
 130 };
 131
 132 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 133         {
 134                 /* arp */
 135                 .discard = 0,
 136                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 137                 .attrs = {
 138                         {
 139                                 /* frame type - arp, hw type - ethernet */
 140                                 .offset_type =
 141                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 142                                 .offset = sizeof(rfc1042_header),
 143                                 .val = cpu_to_be32(0x08060001),
 144                                 .mask = cpu_to_be32(0xffffffff),
 145                         },
 146                         {
 147                                 /* arp dest ip */
 148                                 .offset_type =
 149                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 150                                 .offset = sizeof(rfc1042_header) + 2 +
 151                                           sizeof(struct arphdr) +
 152                                           ETH_ALEN + sizeof(__be32) +
 153                                           ETH_ALEN,
 154                                 .mask = cpu_to_be32(0xffffffff),
 155                                 /* mark it as special field */
 156                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 157                         },
 158                 },
 159         },
 160         {
 161                 /* dhcp offer bcast */
 162                 .discard = 0,
 163                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 164                 .attrs = {
 165                         {
 166                                 /* udp dest port - 68 (bootp client)*/
 167                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 168                                 .offset = offsetof(struct udphdr, dest),
 169                                 .val = cpu_to_be32(0x00440000),
 170                                 .mask = cpu_to_be32(0xffff0000),
 171                         },
 172                         {
 173                                 /* dhcp - lsb bytes of client hw address */
 174                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 175                                 .offset = 38,
 176                                 .mask = cpu_to_be32(0xffffffff),
 177                                 /* mark it as special field */
 178                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 179                         },
 180                 },
 181         },
 182         /* last filter must be empty */
 183         {},
 184 };
 185 #endif
 186
 187 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 188 {
 189         if (!iwl_mvm_is_d0i3_supported(mvm))
 190                 return;
 191
 192         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 193         spin_lock_bh(&mvm->refs_lock);
 194         mvm->refs[ref_type]++;
 195         spin_unlock_bh(&mvm->refs_lock);
 196         iwl_trans_ref(mvm->trans);
 197 }
 198
 199 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 200 {
 201         if (!iwl_mvm_is_d0i3_supported(mvm))
 202                 return;
 203
 204         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 205         spin_lock_bh(&mvm->refs_lock);
 206         if (WARN_ON(!mvm->refs[ref_type])) {
 207                 spin_unlock_bh(&mvm->refs_lock);
 208                 return;
 209         }
 210         mvm->refs[ref_type]--;
 211         spin_unlock_bh(&mvm->refs_lock);
 212         iwl_trans_unref(mvm->trans);
 213 }
 214
 215 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 216                                      enum iwl_mvm_ref_type except_ref)
 217 {
 218         int i, j;
 219
 220         if (!iwl_mvm_is_d0i3_supported(mvm))
 221                 return;
 222
 223         spin_lock_bh(&mvm->refs_lock);
 224         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 225                 if (except_ref == i || !mvm->refs[i])
 226                         continue;
 227
 228                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 229                               i, mvm->refs[i]);
 230                 for (j = 0; j < mvm->refs[i]; j++)
 231                         iwl_trans_unref(mvm->trans);
 232                 mvm->refs[i] = 0;
 233         }
 234         spin_unlock_bh(&mvm->refs_lock);
 235 }
 236
 237 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 238 {
 239         int i;
 240         bool taken = false;
 241
 242         if (!iwl_mvm_is_d0i3_supported(mvm))
 243                 return true;
 244
 245         spin_lock_bh(&mvm->refs_lock);
 246         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 247                 if (mvm->refs[i]) {
 248                         taken = true;
 249                         break;
 250                 }
 251         }
 252         spin_unlock_bh(&mvm->refs_lock);
 253
 254         return taken;
 255 }
 256
 257 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 258 {
 259         iwl_mvm_ref(mvm, ref_type);
 260
 261         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 262                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 263                                 HZ)) {
 264                 WARN_ON_ONCE(1);
 265                 iwl_mvm_unref(mvm, ref_type);
 266                 return -EIO;
 267         }
 268
 269         return 0;
 270 }
 271
 272 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 273 {
 274         int i;
 275
 276         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 277         for (i = 0; i < NUM_PHY_CTX; i++) {
 278                 mvm->phy_ctxts[i].id = i;
 279                 mvm->phy_ctxts[i].ref = 0;
 280         }
 281 }
 282
 283 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 284                                                   const char *alpha2,
 285                                                   enum iwl_mcc_source src_id,
 286                                                   bool *changed)
 287 {
 288         struct ieee80211_regdomain *regd = NULL;
 289         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 290         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 291         struct iwl_mcc_update_resp *resp;
 292
 293         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 294
 295         lockdep_assert_held(&mvm->mutex);
 296
 297         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 298         if (IS_ERR_OR_NULL(resp)) {
 299                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 300                               PTR_ERR_OR_ZERO(resp));
 301                 goto out;
 302         }
 303
 304         if (changed) {
 305                 u32 status = le32_to_cpu(resp->status);
 306
 307                 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
 308                             status == MCC_RESP_ILLEGAL);
 309         }
 310
 311         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 312                                       __le32_to_cpu(resp->n_channels),
 313                                       resp->channels,
 314                                       __le16_to_cpu(resp->mcc),
 315                                       __le16_to_cpu(resp->geo_info));
 316         /* Store the return source id */
 317         src_id = resp->source_id;
 318         kfree(resp);
 319         if (IS_ERR_OR_NULL(regd)) {
 320                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 321                               PTR_ERR_OR_ZERO(regd));
 322                 goto out;
 323         }
 324
 325         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 326                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 327         mvm->lar_regdom_set = true;
 328         mvm->mcc_src = src_id;
 329
 330 out:
 331         return regd;
 332 }
 333
 334 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 335 {
 336         bool changed;
 337         struct ieee80211_regdomain *regd;
 338
 339         if (!iwl_mvm_is_lar_supported(mvm))
 340                 return;
 341
 342         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 343         if (!IS_ERR_OR_NULL(regd)) {
 344                 /* only update the regulatory core if changed */
 345                 if (changed)
 346                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 347
 348                 kfree(regd);
 349         }
 350 }
 351
 352 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 353                                                           bool *changed)
 354 {
 355         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 356                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 357                                      MCC_SOURCE_GET_CURRENT :
 358                                      MCC_SOURCE_OLD_FW, changed);
 359 }
 360
 361 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 362 {
 363         enum iwl_mcc_source used_src;
 364         struct ieee80211_regdomain *regd;
 365         int ret;
 366         bool changed;
 367         const struct ieee80211_regdomain *r =
 368                         rtnl_dereference(mvm->hw->wiphy->regd);
 369
 370         if (!r)
 371                 return -ENOENT;
 372
 373         /* save the last source in case we overwrite it below */
 374         used_src = mvm->mcc_src;
 375         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 376                 /* Notify the firmware we support wifi location updates */
 377                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 378                 if (!IS_ERR_OR_NULL(regd))
 379                         kfree(regd);
 380         }
 381
 382         /* Now set our last stored MCC and source */
 383         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 384                                      &changed);
 385         if (IS_ERR_OR_NULL(regd))
 386                 return -EIO;
 387
 388         /* update cfg80211 if the regdomain was changed */
 389         if (changed)
 390                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 391         else
 392                 ret = 0;
 393
 394         kfree(regd);
 395         return ret;
 396 }
 397
 398 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 399 {
 400         struct ieee80211_hw *hw = mvm->hw;
 401         int num_mac, ret, i;
 402         static const u32 mvm_ciphers[] = {
 403                 WLAN_CIPHER_SUITE_WEP40,
 404                 WLAN_CIPHER_SUITE_WEP104,
 405                 WLAN_CIPHER_SUITE_TKIP,
 406                 WLAN_CIPHER_SUITE_CCMP,
 407         };
 408
 409         /* Tell mac80211 our characteristics */
 410         ieee80211_hw_set(hw, SIGNAL_DBM);
 411         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 412         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 413         ieee80211_hw_set(hw, QUEUE_CONTROL);
 414         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 415         ieee80211_hw_set(hw, SUPPORTS_PS);
 416         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 417         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 418         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 419         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 420         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 421         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 422         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 423         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 424         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 425         ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
 426
 427         if (iwl_mvm_has_tlc_offload(mvm)) {
 428                 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
 429                 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
 430         }
 431
 432         if (iwl_mvm_has_new_rx_api(mvm))
 433                 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 434
 435         if (fw_has_capa(&mvm->fw->ucode_capa,
 436                         IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
 437                 ieee80211_hw_set(hw, AP_LINK_PS);
 438         } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
 439                 /*
 440                  * we absolutely need this for the new TX API since that comes
 441                  * with many more queues than the current code can deal with
 442                  * for station powersave
 443                  */
 444                 return -EINVAL;
 445         }
 446
 447         if (mvm->trans->num_rx_queues > 1)
 448                 ieee80211_hw_set(hw, USES_RSS);
 449
 450         if (mvm->trans->max_skb_frags)
 451                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 452
 453         hw->queues = IEEE80211_MAX_QUEUES;
 454         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 455         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 456                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 457         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 458                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 459
 460         hw->radiotap_timestamp.units_pos =
 461                 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
 462                 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
 463         /* this is the case for CCK frames, it's better (only 8) for OFDM */
 464         hw->radiotap_timestamp.accuracy = 22;
 465
 466         if (!iwl_mvm_has_tlc_offload(mvm))
 467                 hw->rate_control_algorithm = RS_NAME;
 468
 469         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 470         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 471
 472         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
 473         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 474         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 475         hw->wiphy->cipher_suites = mvm->ciphers;
 476
 477         if (iwl_mvm_has_new_rx_api(mvm)) {
 478                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 479                         WLAN_CIPHER_SUITE_GCMP;
 480                 hw->wiphy->n_cipher_suites++;
 481                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 482                         WLAN_CIPHER_SUITE_GCMP_256;
 483                 hw->wiphy->n_cipher_suites++;
 484         }
 485
 486         /* Enable 11w if software crypto is not enabled (as the
 487          * firmware will interpret some mgmt packets, so enabling it
 488          * with software crypto isn't safe).
 489          */
 490         if (!iwlwifi_mod_params.swcrypto) {
 491                 ieee80211_hw_set(hw, MFP_CAPABLE);
 492                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 493                         WLAN_CIPHER_SUITE_AES_CMAC;
 494                 hw->wiphy->n_cipher_suites++;
 495                 if (iwl_mvm_has_new_rx_api(mvm)) {
 496                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 497                                 WLAN_CIPHER_SUITE_BIP_GMAC_128;
 498                         hw->wiphy->n_cipher_suites++;
 499                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 500                                 WLAN_CIPHER_SUITE_BIP_GMAC_256;
 501                         hw->wiphy->n_cipher_suites++;
 502                 }
 503         }
 504
 505         /* currently FW API supports only one optional cipher scheme */
 506         if (mvm->fw->cs[0].cipher) {
 507                 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
 508                 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
 509
 510                 mvm->hw->n_cipher_schemes = 1;
 511
 512                 cs->cipher = le32_to_cpu(fwcs->cipher);
 513                 cs->iftype = BIT(NL80211_IFTYPE_STATION);
 514                 cs->hdr_len = fwcs->hdr_len;
 515                 cs->pn_len = fwcs->pn_len;
 516                 cs->pn_off = fwcs->pn_off;
 517                 cs->key_idx_off = fwcs->key_idx_off;
 518                 cs->key_idx_mask = fwcs->key_idx_mask;
 519                 cs->key_idx_shift = fwcs->key_idx_shift;
 520                 cs->mic_len = fwcs->mic_len;
 521
 522                 mvm->hw->cipher_schemes = mvm->cs;
 523                 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
 524                 hw->wiphy->n_cipher_suites++;
 525         }
 526
 527         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 528         hw->wiphy->features |=
 529                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 530                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 531                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 532
 533         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 534         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 535         hw->chanctx_data_size = sizeof(u16);
 536
 537         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 538                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 539                 BIT(NL80211_IFTYPE_AP) |
 540                 BIT(NL80211_IFTYPE_P2P_GO) |
 541                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 542                 BIT(NL80211_IFTYPE_ADHOC);
 543
 544         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 545         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 546         if (iwl_mvm_is_lar_supported(mvm))
 547                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 548         else
 549                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 550                                                REGULATORY_DISABLE_BEACON_HINTS;
 551
 552         hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 553         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 554
 555         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 556         hw->wiphy->n_iface_combinations =
 557                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 558
 559         hw->wiphy->max_remain_on_channel_duration = 10000;
 560         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 561
 562         /* Extract MAC address */
 563         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 564         hw->wiphy->addresses = mvm->addresses;
 565         hw->wiphy->n_addresses = 1;
 566
 567         /* Extract additional MAC addresses if available */
 568         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 569                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 570
 571         for (i = 1; i < num_mac; i++) {
 572                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 573                        ETH_ALEN);
 574                 mvm->addresses[i].addr[5]++;
 575                 hw->wiphy->n_addresses++;
 576         }
 577
 578         iwl_mvm_reset_phy_ctxts(mvm);
 579
 580         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 581
 582         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 583
 584         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 585         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 586                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 587
 588         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 589                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 590         else
 591                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 592
 593         if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
 594                 hw->wiphy->bands[NL80211_BAND_2GHZ] =
 595                         &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
 596         if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
 597                 hw->wiphy->bands[NL80211_BAND_5GHZ] =
 598                         &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
 599
 600                 if (fw_has_capa(&mvm->fw->ucode_capa,
 601                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 602                     fw_has_api(&mvm->fw->ucode_capa,
 603                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 604                         hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
 605                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 606         }
 607
 608         hw->wiphy->hw_version = mvm->trans->hw_id;
 609
 610         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 611                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 612         else
 613                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 614
 615         hw->wiphy->max_sched_scan_reqs = 1;
 616         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 617         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 618         /* we create the 802.11 header and zero length SSID IE. */
 619         hw->wiphy->max_sched_scan_ie_len =
 620                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 621         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 622         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 623
 624         /*
 625          * the firmware uses u8 for num of iterations, but 0xff is saved for
 626          * infinite loop, so the maximum number of iterations is actually 254.
 627          */
 628         hw->wiphy->max_sched_scan_plan_iterations = 254;
 629
 630         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 631                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 632                                NL80211_FEATURE_P2P_GO_OPPPS |
 633                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 634                                NL80211_FEATURE_DYNAMIC_SMPS |
 635                                NL80211_FEATURE_STATIC_SMPS |
 636                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 637
 638         if (fw_has_capa(&mvm->fw->ucode_capa,
 639                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 640                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 641         if (fw_has_capa(&mvm->fw->ucode_capa,
 642                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 643                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 644
 645         if (fw_has_capa(&mvm->fw->ucode_capa,
 646                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 647                 hw->wiphy->features |=
 648                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 649
 650         if (fw_has_capa(&mvm->fw->ucode_capa,
 651                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 652                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 653
 654         if (fw_has_api(&mvm->fw->ucode_capa,
 655                        IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
 656                 wiphy_ext_feature_set(hw->wiphy,
 657                                       NL80211_EXT_FEATURE_SCAN_START_TIME);
 658                 wiphy_ext_feature_set(hw->wiphy,
 659                                       NL80211_EXT_FEATURE_BSS_PARENT_TSF);
 660                 wiphy_ext_feature_set(hw->wiphy,
 661                                       NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 662         }
 663
 664         if (iwl_mvm_is_oce_supported(mvm)) {
 665                 wiphy_ext_feature_set(hw->wiphy,
 666                         NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
 667                 wiphy_ext_feature_set(hw->wiphy,
 668                         NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
 669                 wiphy_ext_feature_set(hw->wiphy,
 670                         NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
 671                 wiphy_ext_feature_set(hw->wiphy,
 672                         NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
 673         }
 674
 675         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 676
 677 #ifdef CONFIG_PM_SLEEP
 678         if (iwl_mvm_is_d0i3_supported(mvm) &&
 679             device_can_wakeup(mvm->trans->dev)) {
 680                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 681                 hw->wiphy->wowlan = &mvm->wowlan;
 682         }
 683
 684         if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
 685             mvm->trans->ops->d3_suspend &&
 686             mvm->trans->ops->d3_resume &&
 687             device_can_wakeup(mvm->trans->dev)) {
 688                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 689                                      WIPHY_WOWLAN_DISCONNECT |
 690                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 691                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 692                                      WIPHY_WOWLAN_NET_DETECT;
 693                 if (!iwlwifi_mod_params.swcrypto)
 694                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 695                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 696                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 697
 698                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 699                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 700                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 701                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 702                 hw->wiphy->wowlan = &mvm->wowlan;
 703         }
 704 #endif
 705
 706 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 707         /* assign default bcast filtering configuration */
 708         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 709 #endif
 710
 711         ret = iwl_mvm_leds_init(mvm);
 712         if (ret)
 713                 return ret;
 714
 715         if (fw_has_capa(&mvm->fw->ucode_capa,
 716                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 717                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 718                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 719                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 720         }
 721
 722         if (fw_has_capa(&mvm->fw->ucode_capa,
 723                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 724                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 725                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 726         }
 727
 728         hw->netdev_features |= mvm->cfg->features;
 729         if (!iwl_mvm_is_csum_supported(mvm)) {
 730                 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
 731                                          NETIF_F_RXCSUM);
 732                 /* We may support SW TX CSUM */
 733                 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 734                         hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
 735         }
 736
 737         ret = ieee80211_register_hw(mvm->hw);
 738         if (ret)
 739                 iwl_mvm_leds_exit(mvm);
 740         mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 741
 742         if (mvm->cfg->vht_mu_mimo_supported)
 743                 wiphy_ext_feature_set(hw->wiphy,
 744                                       NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
 745
 746         return ret;
 747 }
 748
 749 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 750                              struct ieee80211_sta *sta,
 751                              struct sk_buff *skb)
 752 {
 753         struct iwl_mvm_sta *mvmsta;
 754         bool defer = false;
 755
 756         /*
 757          * double check the IN_D0I3 flag both before and after
 758          * taking the spinlock, in order to prevent taking
 759          * the spinlock when not needed.
 760          */
 761         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 762                 return false;
 763
 764         spin_lock(&mvm->d0i3_tx_lock);
 765         /*
 766          * testing the flag again ensures the skb dequeue
 767          * loop (on d0i3 exit) hasn't run yet.
 768          */
 769         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 770                 goto out;
 771
 772         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 773         if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
 774             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 775                 goto out;
 776
 777         __skb_queue_tail(&mvm->d0i3_tx, skb);
 778         ieee80211_stop_queues(mvm->hw);
 779
 780         /* trigger wakeup */
 781         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 782         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 783
 784         defer = true;
 785 out:
 786         spin_unlock(&mvm->d0i3_tx_lock);
 787         return defer;
 788 }
 789
 790 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 791                            struct ieee80211_tx_control *control,
 792                            struct sk_buff *skb)
 793 {
 794         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 795         struct ieee80211_sta *sta = control->sta;
 796         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 797         struct ieee80211_hdr *hdr = (void *)skb->data;
 798
 799         if (iwl_mvm_is_radio_killed(mvm)) {
 800                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 801                 goto drop;
 802         }
 803
 804         if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 805             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 806             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 807                 goto drop;
 808
 809         /* treat non-bufferable MMPDUs on AP interfaces as broadcast */
 810         if ((info->control.vif->type == NL80211_IFTYPE_AP ||
 811              info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
 812             ieee80211_is_mgmt(hdr->frame_control) &&
 813             !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
 814                 sta = NULL;
 815
 816         if (sta) {
 817                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 818                         return;
 819                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 820                         goto drop;
 821                 return;
 822         }
 823
 824         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 825                 goto drop;
 826         return;
 827  drop:
 828         ieee80211_free_txskb(hw, skb);
 829 }
 830
 831 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 832 {
 833         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 834                 return false;
 835         return true;
 836 }
 837
 838 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 839 {
 840         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 841                 return false;
 842         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 843                 return true;
 844
 845         /* enabled by default */
 846         return true;
 847 }
 848
 849 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)           \
 850         do {                                                            \
 851                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))                \
 852                         break;                                          \
 853                 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt);    \
 854         } while (0)
 855
 856 static void
 857 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 858                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 859                             enum ieee80211_ampdu_mlme_action action)
 860 {
 861         struct iwl_fw_dbg_trigger_tlv *trig;
 862         struct iwl_fw_dbg_trigger_ba *ba_trig;
 863
 864         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
 865                                      FW_DBG_TRIGGER_BA);
 866         if (!trig)
 867                 return;
 868
 869         ba_trig = (void *)trig->data;
 870
 871         switch (action) {
 872         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 873                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 874                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 875
 876                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 877                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 878                                  sta->addr, tid, tid_data->ssn);
 879                 break;
 880                 }
 881         case IEEE80211_AMPDU_TX_STOP_CONT:
 882                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 883                                  "TX AGG STOP: MAC %pM tid %d\n",
 884                                  sta->addr, tid);
 885                 break;
 886         case IEEE80211_AMPDU_RX_START:
 887                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 888                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 889                                  sta->addr, tid, rx_ba_ssn);
 890                 break;
 891         case IEEE80211_AMPDU_RX_STOP:
 892                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 893                                  "RX AGG STOP: MAC %pM tid %d\n",
 894                                  sta->addr, tid);
 895                 break;
 896         default:
 897                 break;
 898         }
 899 }
 900
 901 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 902                                     struct ieee80211_vif *vif,
 903                                     struct ieee80211_ampdu_params *params)
 904 {
 905         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 906         int ret;
 907         bool tx_agg_ref = false;
 908         struct ieee80211_sta *sta = params->sta;
 909         enum ieee80211_ampdu_mlme_action action = params->action;
 910         u16 tid = params->tid;
 911         u16 *ssn = &params->ssn;
 912         u16 buf_size = params->buf_size;
 913         bool amsdu = params->amsdu;
 914         u16 timeout = params->timeout;
 915
 916         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 917                      sta->addr, tid, action);
 918
 919         if (!(mvm->nvm_data->sku_cap_11n_enable))
 920                 return -EACCES;
 921
 922         /* return from D0i3 before starting a new Tx aggregation */
 923         switch (action) {
 924         case IEEE80211_AMPDU_TX_START:
 925         case IEEE80211_AMPDU_TX_STOP_CONT:
 926         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 927         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 928         case IEEE80211_AMPDU_TX_OPERATIONAL:
 929                 /*
 930                  * for tx start, wait synchronously until D0i3 exit to
 931                  * get the correct sequence number for the tid.
 932                  * additionally, some other ampdu actions use direct
 933                  * target access, which is not handled automatically
 934                  * by the trans layer (unlike commands), so wait for
 935                  * d0i3 exit in these cases as well.
 936                  */
 937                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 938                 if (ret)
 939                         return ret;
 940
 941                 tx_agg_ref = true;
 942                 break;
 943         default:
 944                 break;
 945         }
 946
 947         mutex_lock(&mvm->mutex);
 948
 949         switch (action) {
 950         case IEEE80211_AMPDU_RX_START:
 951                 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
 952                                 iwl_mvm_sta_from_mac80211(sta)->sta_id) {
 953                         struct iwl_mvm_vif *mvmvif;
 954                         u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
 955                         struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
 956
 957                         mdata->opened_rx_ba_sessions = true;
 958                         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 959                         cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
 960                 }
 961                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 962                         ret = -EINVAL;
 963                         break;
 964                 }
 965                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
 966                                          timeout);
 967                 break;
 968         case IEEE80211_AMPDU_RX_STOP:
 969                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
 970                                          timeout);
 971                 break;
 972         case IEEE80211_AMPDU_TX_START:
 973                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 974                         ret = -EINVAL;
 975                         break;
 976                 }
 977                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 978                 break;
 979         case IEEE80211_AMPDU_TX_STOP_CONT:
 980                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 981                 break;
 982         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 983         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 984                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 985                 break;
 986         case IEEE80211_AMPDU_TX_OPERATIONAL:
 987                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 988                                               buf_size, amsdu);
 989                 break;
 990         default:
 991                 WARN_ON_ONCE(1);
 992                 ret = -EINVAL;
 993                 break;
 994         }
 995
 996         if (!ret) {
 997                 u16 rx_ba_ssn = 0;
 998
 999                 if (action == IEEE80211_AMPDU_RX_START)
1000                         rx_ba_ssn = *ssn;
1001
1002                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
1003                                             rx_ba_ssn, action);
1004         }
1005         mutex_unlock(&mvm->mutex);
1006
1007         /*
1008          * If the tid is marked as started, we won't use it for offloaded
1009          * traffic on the next D0i3 entry. It's safe to unref.
1010          */
1011         if (tx_agg_ref)
1012                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1013
1014         return ret;
1015 }
1016
1017 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1018                                      struct ieee80211_vif *vif)
1019 {
1020         struct iwl_mvm *mvm = data;
1021         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1022
1023         mvmvif->uploaded = false;
1024         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1025
1026         spin_lock_bh(&mvm->time_event_lock);
1027         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1028         spin_unlock_bh(&mvm->time_event_lock);
1029
1030         mvmvif->phy_ctxt = NULL;
1031         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1032         memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
1033 }
1034
1035 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1036 {
1037         /* clear the D3 reconfig, we only need it to avoid dumping a
1038          * firmware coredump on reconfiguration, we shouldn't do that
1039          * on D3->D0 transition
1040          */
1041         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1042                 mvm->fwrt.dump.desc = &iwl_dump_desc_assert;
1043                 iwl_fw_error_dump(&mvm->fwrt);
1044         }
1045
1046         /* cleanup all stale references (scan, roc), but keep the
1047          * ucode_down ref until reconfig is complete
1048          */
1049         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1050
1051         iwl_mvm_stop_device(mvm);
1052
1053         mvm->scan_status = 0;
1054         mvm->ps_disabled = false;
1055         mvm->calibrating = false;
1056
1057         /* just in case one was running */
1058         iwl_mvm_cleanup_roc_te(mvm);
1059         ieee80211_remain_on_channel_expired(mvm->hw);
1060
1061         /*
1062          * cleanup all interfaces, even inactive ones, as some might have
1063          * gone down during the HW restart
1064          */
1065         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1066
1067         mvm->p2p_device_vif = NULL;
1068         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1069
1070         iwl_mvm_reset_phy_ctxts(mvm);
1071         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1072         memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1073         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1074         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1075
1076         ieee80211_wake_queues(mvm->hw);
1077
1078         /* clear any stale d0i3 state */
1079         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1080
1081         mvm->vif_count = 0;
1082         mvm->rx_ba_sessions = 0;
1083         mvm->fwrt.dump.conf = FW_DBG_INVALID;
1084         mvm->monitor_on = false;
1085
1086         /* keep statistics ticking */
1087         iwl_mvm_accu_radio_stats(mvm);
1088 }
1089
1090 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1091 {
1092         int ret;
1093
1094         lockdep_assert_held(&mvm->mutex);
1095
1096         if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1097                 /*
1098                  * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1099                  * so later code will - from now on - see that we're doing it.
1100                  */
1101                 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1102                 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1103                 /* Clean up some internal and mac80211 state on restart */
1104                 iwl_mvm_restart_cleanup(mvm);
1105         } else {
1106                 /* Hold the reference to prevent runtime suspend while
1107                  * the start procedure runs.  It's a bit confusing
1108                  * that the UCODE_DOWN reference is taken, but it just
1109                  * means "UCODE is not UP yet". ( TODO: rename this
1110                  * reference).
1111                  */
1112                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1113         }
1114         ret = iwl_mvm_up(mvm);
1115
1116         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1117                 /* Something went wrong - we need to finish some cleanup
1118                  * that normally iwl_mvm_mac_restart_complete() below
1119                  * would do.
1120                  */
1121                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1122 #ifdef CONFIG_PM
1123                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1124 #endif
1125         }
1126
1127         return ret;
1128 }
1129
1130 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1131 {
1132         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1133         int ret;
1134
1135         /* Some hw restart cleanups must not hold the mutex */
1136         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1137                 /*
1138                  * Make sure we are out of d0i3. This is needed
1139                  * to make sure the reference accounting is correct
1140                  * (and there is no stale d0i3_exit_work).
1141                  */
1142                 wait_event_timeout(mvm->d0i3_exit_waitq,
1143                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1144                                              &mvm->status),
1145                                    HZ);
1146         }
1147
1148         mutex_lock(&mvm->mutex);
1149         ret = __iwl_mvm_mac_start(mvm);
1150         mutex_unlock(&mvm->mutex);
1151
1152         return ret;
1153 }
1154
1155 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1156 {
1157         int ret;
1158
1159         mutex_lock(&mvm->mutex);
1160
1161         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1162 #ifdef CONFIG_PM
1163         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1164 #endif
1165         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1166         if (ret)
1167                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1168                         ret);
1169
1170         /* allow transport/FW low power modes */
1171         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1172
1173         /*
1174          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1175          * of packets the FW sent out, so we must reconnect.
1176          */
1177         iwl_mvm_teardown_tdls_peers(mvm);
1178
1179         mutex_unlock(&mvm->mutex);
1180 }
1181
1182 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1183 {
1184         if (iwl_mvm_is_d0i3_supported(mvm) &&
1185             iwl_mvm_enter_d0i3_on_suspend(mvm))
1186                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1187                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1188                                                         &mvm->status),
1189                                               HZ),
1190                           "D0i3 exit on resume timed out\n");
1191 }
1192
1193 static void
1194 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1195                               enum ieee80211_reconfig_type reconfig_type)
1196 {
1197         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1198
1199         switch (reconfig_type) {
1200         case IEEE80211_RECONFIG_TYPE_RESTART:
1201                 iwl_mvm_restart_complete(mvm);
1202                 break;
1203         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1204                 iwl_mvm_resume_complete(mvm);
1205                 break;
1206         }
1207 }
1208
1209 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1210 {
1211         lockdep_assert_held(&mvm->mutex);
1212
1213         /* firmware counters are obviously reset now, but we shouldn't
1214          * partially track so also clear the fw_reset_accu counters.
1215          */
1216         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1217
1218         /* async_handlers_wk is now blocked */
1219
1220         /*
1221          * The work item could be running or queued if the
1222          * ROC time event stops just as we get here.
1223          */
1224         flush_work(&mvm->roc_done_wk);
1225
1226         iwl_mvm_stop_device(mvm);
1227
1228         iwl_mvm_async_handlers_purge(mvm);
1229         /* async_handlers_list is empty and will stay empty: HW is stopped */
1230
1231         /* the fw is stopped, the aux sta is dead: clean up driver state */
1232         iwl_mvm_del_aux_sta(mvm);
1233
1234         /*
1235          * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
1236          * hw (as restart_complete() won't be called in this case) and mac80211
1237          * won't execute the restart.
1238          * But make sure to cleanup interfaces that have gone down before/during
1239          * HW restart was requested.
1240          */
1241         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1242             test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1243                                &mvm->status))
1244                 ieee80211_iterate_interfaces(mvm->hw, 0,
1245                                              iwl_mvm_cleanup_iterator, mvm);
1246
1247         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1248          * make sure there's nothing left there and warn if any is found.
1249          */
1250         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1251                 int i;
1252
1253                 for (i = 0; i < mvm->max_scans; i++) {
1254                         if (WARN_ONCE(mvm->scan_uid_status[i],
1255                                       "UMAC scan UID %d status was not cleaned\n",
1256                                       i))
1257                                 mvm->scan_uid_status[i] = 0;
1258                 }
1259         }
1260 }
1261
1262 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1263 {
1264         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1265
1266         flush_work(&mvm->d0i3_exit_work);
1267         flush_work(&mvm->async_handlers_wk);
1268         flush_work(&mvm->add_stream_wk);
1269
1270         /*
1271          * Lock and clear the firmware running bit here already, so that
1272          * new commands coming in elsewhere, e.g. from debugfs, will not
1273          * be able to proceed. This is important here because one of those
1274          * debugfs files causes the firmware dump to be triggered, and if we
1275          * don't stop debugfs accesses before canceling that it could be
1276          * retriggered after we flush it but before we've cleared the bit.
1277          */
1278         clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1279
1280         iwl_fw_cancel_dump(&mvm->fwrt);
1281         cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1282         cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1283         iwl_fw_free_dump_desc(&mvm->fwrt);
1284
1285         mutex_lock(&mvm->mutex);
1286         __iwl_mvm_mac_stop(mvm);
1287         mutex_unlock(&mvm->mutex);
1288
1289         /*
1290          * The worker might have been waiting for the mutex, let it run and
1291          * discover that its list is now empty.
1292          */
1293         cancel_work_sync(&mvm->async_handlers_wk);
1294 }
1295
1296 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1297 {
1298         u16 i;
1299
1300         lockdep_assert_held(&mvm->mutex);
1301
1302         for (i = 0; i < NUM_PHY_CTX; i++)
1303                 if (!mvm->phy_ctxts[i].ref)
1304                         return &mvm->phy_ctxts[i];
1305
1306         IWL_ERR(mvm, "No available PHY context\n");
1307         return NULL;
1308 }
1309
1310 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1311                                 s16 tx_power)
1312 {
1313         int len;
1314         union {
1315                 struct iwl_dev_tx_power_cmd v5;
1316                 struct iwl_dev_tx_power_cmd_v4 v4;
1317         } cmd = {
1318                 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1319                 .v5.v3.mac_context_id =
1320                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1321                 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1322         };
1323
1324         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1325                 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1326
1327         if (fw_has_api(&mvm->fw->ucode_capa,
1328                        IWL_UCODE_TLV_API_REDUCE_TX_POWER))
1329                 len = sizeof(cmd.v5);
1330         else if (fw_has_capa(&mvm->fw->ucode_capa,
1331                              IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1332                 len = sizeof(cmd.v4);
1333         else
1334                 len = sizeof(cmd.v4.v3);
1335
1336         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1337 }
1338
1339 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1340                                      struct ieee80211_vif *vif)
1341 {
1342         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1343         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1344         int ret;
1345
1346         mvmvif->mvm = mvm;
1347         RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1348
1349         /*
1350          * make sure D0i3 exit is completed, otherwise a target access
1351          * during tx queue configuration could be done when still in
1352          * D0i3 state.
1353          */
1354         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1355         if (ret)
1356                 return ret;
1357
1358         /*
1359          * Not much to do here. The stack will not allow interface
1360          * types or combinations that we didn't advertise, so we
1361          * don't really have to check the types.
1362          */
1363
1364         mutex_lock(&mvm->mutex);
1365
1366         /* make sure that beacon statistics don't go backwards with FW reset */
1367         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1368                 mvmvif->beacon_stats.accu_num_beacons +=
1369                         mvmvif->beacon_stats.num_beacons;
1370
1371         /* Allocate resources for the MAC context, and add it to the fw  */
1372         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1373         if (ret)
1374                 goto out_unlock;
1375
1376         /* Counting number of interfaces is needed for legacy PM */
1377         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1378                 mvm->vif_count++;
1379
1380         /*
1381          * The AP binding flow can be done only after the beacon
1382          * template is configured (which happens only in the mac80211
1383          * start_ap() flow), and adding the broadcast station can happen
1384          * only after the binding.
1385          * In addition, since modifying the MAC before adding a bcast
1386          * station is not allowed by the FW, delay the adding of MAC context to
1387          * the point where we can also add the bcast station.
1388          * In short: there's not much we can do at this point, other than
1389          * allocating resources :)
1390          */
1391         if (vif->type == NL80211_IFTYPE_AP ||
1392             vif->type == NL80211_IFTYPE_ADHOC) {
1393                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1394                 if (ret) {
1395                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1396                         goto out_release;
1397                 }
1398
1399                 /*
1400                  * Only queue for this station is the mcast queue,
1401                  * which shouldn't be in TFD mask anyway
1402                  */
1403                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1404                                                0, vif->type,
1405                                                IWL_STA_MULTICAST);
1406                 if (ret)
1407                         goto out_release;
1408
1409                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1410                 goto out_unlock;
1411         }
1412
1413         mvmvif->features |= hw->netdev_features;
1414
1415         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1416         if (ret)
1417                 goto out_release;
1418
1419         ret = iwl_mvm_power_update_mac(mvm);
1420         if (ret)
1421                 goto out_remove_mac;
1422
1423         /* beacon filtering */
1424         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1425         if (ret)
1426                 goto out_remove_mac;
1427
1428         if (!mvm->bf_allowed_vif &&
1429             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1430                 mvm->bf_allowed_vif = mvmvif;
1431                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1432                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1433         }
1434
1435         /*
1436          * P2P_DEVICE interface does not have a channel context assigned to it,
1437          * so a dedicated PHY context is allocated to it and the corresponding
1438          * MAC context is bound to it at this stage.
1439          */
1440         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1441
1442                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1443                 if (!mvmvif->phy_ctxt) {
1444                         ret = -ENOSPC;
1445                         goto out_free_bf;
1446                 }
1447
1448                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1449                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1450                 if (ret)
1451                         goto out_unref_phy;
1452
1453                 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1454                 if (ret)
1455                         goto out_unbind;
1456
1457                 /* Save a pointer to p2p device vif, so it can later be used to
1458                  * update the p2p device MAC when a GO is started/stopped */
1459                 mvm->p2p_device_vif = vif;
1460         }
1461
1462         iwl_mvm_tcm_add_vif(mvm, vif);
1463
1464         if (vif->type == NL80211_IFTYPE_MONITOR)
1465                 mvm->monitor_on = true;
1466
1467         iwl_mvm_vif_dbgfs_register(mvm, vif);
1468         goto out_unlock;
1469
1470  out_unbind:
1471         iwl_mvm_binding_remove_vif(mvm, vif);
1472  out_unref_phy:
1473         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1474  out_free_bf:
1475         if (mvm->bf_allowed_vif == mvmvif) {
1476                 mvm->bf_allowed_vif = NULL;
1477                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1478                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1479         }
1480  out_remove_mac:
1481         mvmvif->phy_ctxt = NULL;
1482         iwl_mvm_mac_ctxt_remove(mvm, vif);
1483  out_release:
1484         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1485                 mvm->vif_count--;
1486  out_unlock:
1487         mutex_unlock(&mvm->mutex);
1488
1489         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1490
1491         return ret;
1492 }
1493
1494 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1495                                         struct ieee80211_vif *vif)
1496 {
1497         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1498                 /*
1499                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1500                  * We assume here that all the packets sent to the OFFCHANNEL
1501                  * queue are sent in ROC session.
1502                  */
1503                 flush_work(&mvm->roc_done_wk);
1504         }
1505 }
1506
1507 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1508                                          struct ieee80211_vif *vif)
1509 {
1510         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1511         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1512         struct iwl_probe_resp_data *probe_data;
1513
1514         iwl_mvm_prepare_mac_removal(mvm, vif);
1515
1516         if (!(vif->type == NL80211_IFTYPE_AP ||
1517               vif->type == NL80211_IFTYPE_ADHOC))
1518                 iwl_mvm_tcm_rm_vif(mvm, vif);
1519
1520         mutex_lock(&mvm->mutex);
1521
1522         probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1523                                                lockdep_is_held(&mvm->mutex));
1524         RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1525         if (probe_data)
1526                 kfree_rcu(probe_data, rcu_head);
1527
1528         if (mvm->bf_allowed_vif == mvmvif) {
1529                 mvm->bf_allowed_vif = NULL;
1530                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1531                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1532         }
1533
1534         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1535
1536         /*
1537          * For AP/GO interface, the tear down of the resources allocated to the
1538          * interface is be handled as part of the stop_ap flow.
1539          */
1540         if (vif->type == NL80211_IFTYPE_AP ||
1541             vif->type == NL80211_IFTYPE_ADHOC) {
1542 #ifdef CONFIG_NL80211_TESTMODE
1543                 if (vif == mvm->noa_vif) {
1544                         mvm->noa_vif = NULL;
1545                         mvm->noa_duration = 0;
1546                 }
1547 #endif
1548                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1549                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1550                 goto out_release;
1551         }
1552
1553         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1554                 mvm->p2p_device_vif = NULL;
1555                 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1556                 iwl_mvm_binding_remove_vif(mvm, vif);
1557                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1558                 mvmvif->phy_ctxt = NULL;
1559         }
1560
1561         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1562                 mvm->vif_count--;
1563
1564         iwl_mvm_power_update_mac(mvm);
1565         iwl_mvm_mac_ctxt_remove(mvm, vif);
1566
1567         if (vif->type == NL80211_IFTYPE_MONITOR)
1568                 mvm->monitor_on = false;
1569
1570 out_release:
1571         mutex_unlock(&mvm->mutex);
1572 }
1573
1574 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1575 {
1576         return 0;
1577 }
1578
1579 struct iwl_mvm_mc_iter_data {
1580         struct iwl_mvm *mvm;
1581         int port_id;
1582 };
1583
1584 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1585                                       struct ieee80211_vif *vif)
1586 {
1587         struct iwl_mvm_mc_iter_data *data = _data;
1588         struct iwl_mvm *mvm = data->mvm;
1589         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1590         struct iwl_host_cmd hcmd = {
1591                 .id = MCAST_FILTER_CMD,
1592                 .flags = CMD_ASYNC,
1593                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1594         };
1595         int ret, len;
1596
1597         /* if we don't have free ports, mcast frames will be dropped */
1598         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1599                 return;
1600
1601         if (vif->type != NL80211_IFTYPE_STATION ||
1602             !vif->bss_conf.assoc)
1603                 return;
1604
1605         cmd->port_id = data->port_id++;
1606         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1607         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1608
1609         hcmd.len[0] = len;
1610         hcmd.data[0] = cmd;
1611
1612         ret = iwl_mvm_send_cmd(mvm, &hcmd);
1613         if (ret)
1614                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1615 }
1616
1617 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1618 {
1619         struct iwl_mvm_mc_iter_data iter_data = {
1620                 .mvm = mvm,
1621         };
1622
1623         lockdep_assert_held(&mvm->mutex);
1624
1625         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1626                 return;
1627
1628         ieee80211_iterate_active_interfaces_atomic(
1629                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1630                 iwl_mvm_mc_iface_iterator, &iter_data);
1631 }
1632
1633 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1634                                      struct netdev_hw_addr_list *mc_list)
1635 {
1636         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1637         struct iwl_mcast_filter_cmd *cmd;
1638         struct netdev_hw_addr *addr;
1639         int addr_count;
1640         bool pass_all;
1641         int len;
1642
1643         addr_count = netdev_hw_addr_list_count(mc_list);
1644         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1645                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1646         if (pass_all)
1647                 addr_count = 0;
1648
1649         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1650         cmd = kzalloc(len, GFP_ATOMIC);
1651         if (!cmd)
1652                 return 0;
1653
1654         if (pass_all) {
1655                 cmd->pass_all = 1;
1656                 return (u64)(unsigned long)cmd;
1657         }
1658
1659         netdev_hw_addr_list_for_each(addr, mc_list) {
1660                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1661                                    cmd->count, addr->addr);
1662                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1663                        addr->addr, ETH_ALEN);
1664                 cmd->count++;
1665         }
1666
1667         return (u64)(unsigned long)cmd;
1668 }
1669
1670 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1671                                      unsigned int changed_flags,
1672                                      unsigned int *total_flags,
1673                                      u64 multicast)
1674 {
1675         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1676         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1677
1678         mutex_lock(&mvm->mutex);
1679
1680         /* replace previous configuration */
1681         kfree(mvm->mcast_filter_cmd);
1682         mvm->mcast_filter_cmd = cmd;
1683
1684         if (!cmd)
1685                 goto out;
1686
1687         if (changed_flags & FIF_ALLMULTI)
1688                 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1689
1690         if (cmd->pass_all)
1691                 cmd->count = 0;
1692
1693         iwl_mvm_recalc_multicast(mvm);
1694 out:
1695         mutex_unlock(&mvm->mutex);
1696         *total_flags = 0;
1697 }
1698
1699 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1700                                         struct ieee80211_vif *vif,
1701                                         unsigned int filter_flags,
1702                                         unsigned int changed_flags)
1703 {
1704         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1705
1706         /* We support only filter for probe requests */
1707         if (!(changed_flags & FIF_PROBE_REQ))
1708                 return;
1709
1710         /* Supported only for p2p client interfaces */
1711         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1712             !vif->p2p)
1713                 return;
1714
1715         mutex_lock(&mvm->mutex);
1716         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1717         mutex_unlock(&mvm->mutex);
1718 }
1719
1720 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1721 struct iwl_bcast_iter_data {
1722         struct iwl_mvm *mvm;
1723         struct iwl_bcast_filter_cmd *cmd;
1724         u8 current_filter;
1725 };
1726
1727 static void
1728 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1729                          const struct iwl_fw_bcast_filter *in_filter,
1730                          struct iwl_fw_bcast_filter *out_filter)
1731 {
1732         struct iwl_fw_bcast_filter_attr *attr;
1733         int i;
1734
1735         memcpy(out_filter, in_filter, sizeof(*out_filter));
1736
1737         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1738                 attr = &out_filter->attrs[i];
1739
1740                 if (!attr->mask)
1741                         break;
1742
1743                 switch (attr->reserved1) {
1744                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1745                         if (vif->bss_conf.arp_addr_cnt != 1) {
1746                                 attr->mask = 0;
1747                                 continue;
1748                         }
1749
1750                         attr->val = vif->bss_conf.arp_addr_list[0];
1751                         break;
1752                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1753                         attr->val = *(__be32 *)&vif->addr[2];
1754                         break;
1755                 default:
1756                         break;
1757                 }
1758                 attr->reserved1 = 0;
1759                 out_filter->num_attrs++;
1760         }
1761 }
1762
1763 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1764                                           struct ieee80211_vif *vif)
1765 {
1766         struct iwl_bcast_iter_data *data = _data;
1767         struct iwl_mvm *mvm = data->mvm;
1768         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1769         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1770         struct iwl_fw_bcast_mac *bcast_mac;
1771         int i;
1772
1773         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1774                 return;
1775
1776         bcast_mac = &cmd->macs[mvmvif->id];
1777
1778         /*
1779          * enable filtering only for associated stations, but not for P2P
1780          * Clients
1781          */
1782         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1783             !vif->bss_conf.assoc)
1784                 return;
1785
1786         bcast_mac->default_discard = 1;
1787
1788         /* copy all configured filters */
1789         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1790                 /*
1791                  * Make sure we don't exceed our filters limit.
1792                  * if there is still a valid filter to be configured,
1793                  * be on the safe side and just allow bcast for this mac.
1794                  */
1795                 if (WARN_ON_ONCE(data->current_filter >=
1796                                  ARRAY_SIZE(cmd->filters))) {
1797                         bcast_mac->default_discard = 0;
1798                         bcast_mac->attached_filters = 0;
1799                         break;
1800                 }
1801
1802                 iwl_mvm_set_bcast_filter(vif,
1803                                          &mvm->bcast_filters[i],
1804                                          &cmd->filters[data->current_filter]);
1805
1806                 /* skip current filter if it contains no attributes */
1807                 if (!cmd->filters[data->current_filter].num_attrs)
1808                         continue;
1809
1810                 /* attach the filter to current mac */
1811                 bcast_mac->attached_filters |=
1812                                 cpu_to_le16(BIT(data->current_filter));
1813
1814                 data->current_filter++;
1815         }
1816 }
1817
1818 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1819                                     struct iwl_bcast_filter_cmd *cmd)
1820 {
1821         struct iwl_bcast_iter_data iter_data = {
1822                 .mvm = mvm,
1823                 .cmd = cmd,
1824         };
1825
1826         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1827                 return false;
1828
1829         memset(cmd, 0, sizeof(*cmd));
1830         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1831         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1832
1833 #ifdef CONFIG_IWLWIFI_DEBUGFS
1834         /* use debugfs filters/macs if override is configured */
1835         if (mvm->dbgfs_bcast_filtering.override) {
1836                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1837                        sizeof(cmd->filters));
1838                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1839                        sizeof(cmd->macs));
1840                 return true;
1841         }
1842 #endif
1843
1844         /* if no filters are configured, do nothing */
1845         if (!mvm->bcast_filters)
1846                 return false;
1847
1848         /* configure and attach these filters for each associated sta vif */
1849         ieee80211_iterate_active_interfaces(
1850                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1851                 iwl_mvm_bcast_filter_iterator, &iter_data);
1852
1853         return true;
1854 }
1855
1856 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1857 {
1858         struct iwl_bcast_filter_cmd cmd;
1859
1860         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1861                 return 0;
1862
1863         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1864                 return 0;
1865
1866         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1867                                     sizeof(cmd), &cmd);
1868 }
1869 #else
1870 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1871 {
1872         return 0;
1873 }
1874 #endif
1875
1876 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1877                                     struct ieee80211_vif *vif)
1878 {
1879         struct iwl_mu_group_mgmt_cmd cmd = {};
1880
1881         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1882                WLAN_MEMBERSHIP_LEN);
1883         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1884                WLAN_USER_POSITION_LEN);
1885
1886         return iwl_mvm_send_cmd_pdu(mvm,
1887                                     WIDE_ID(DATA_PATH_GROUP,
1888                                             UPDATE_MU_GROUPS_CMD),
1889                                     0, sizeof(cmd), &cmd);
1890 }
1891
1892 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1893                                            struct ieee80211_vif *vif)
1894 {
1895         if (vif->mu_mimo_owner) {
1896                 struct iwl_mu_group_mgmt_notif *notif = _data;
1897
1898                 /*
1899                  * MU-MIMO Group Id action frame is little endian. We treat
1900                  * the data received from firmware as if it came from the
1901                  * action frame, so no conversion is needed.
1902                  */
1903                 ieee80211_update_mu_groups(vif,
1904                                            (u8 *)&notif->membership_status,
1905                                            (u8 *)&notif->user_position);
1906         }
1907 }
1908
1909 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1910                                struct iwl_rx_cmd_buffer *rxb)
1911 {
1912         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1913         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1914
1915         ieee80211_iterate_active_interfaces_atomic(
1916                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1917                         iwl_mvm_mu_mimo_iface_iterator, notif);
1918 }
1919
1920 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
1921 {
1922         u8 byte_num = ppe_pos_bit / 8;
1923         u8 bit_num = ppe_pos_bit % 8;
1924         u8 residue_bits;
1925         u8 res;
1926
1927         if (bit_num <= 5)
1928                 return (ppe[byte_num] >> bit_num) &
1929                        (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
1930
1931         /*
1932          * If bit_num > 5, we have to combine bits with next byte.
1933          * Calculate how many bits we need to take from current byte (called
1934          * here "residue_bits"), and add them to bits from next byte.
1935          */
1936
1937         residue_bits = 8 - bit_num;
1938
1939         res = (ppe[byte_num + 1] &
1940                (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
1941               residue_bits;
1942         res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
1943
1944         return res;
1945 }
1946
1947 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
1948                                struct ieee80211_vif *vif, u8 sta_id)
1949 {
1950         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1951         struct iwl_he_sta_context_cmd sta_ctxt_cmd = {
1952                 .sta_id = sta_id,
1953                 .tid_limit = IWL_MAX_TID_COUNT,
1954                 .bss_color = vif->bss_conf.bss_color,
1955                 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
1956                 .frame_time_rts_th =
1957                         cpu_to_le16(vif->bss_conf.frame_time_rts_th),
1958         };
1959         struct ieee80211_sta *sta;
1960         u32 flags;
1961         int i;
1962
1963         rcu_read_lock();
1964
1965         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
1966         if (IS_ERR(sta)) {
1967                 rcu_read_unlock();
1968                 WARN(1, "Can't find STA to configure HE\n");
1969                 return;
1970         }
1971
1972         if (!sta->he_cap.has_he) {
1973                 rcu_read_unlock();
1974                 return;
1975         }
1976
1977         flags = 0;
1978
1979         /* HTC flags */
1980         if (sta->he_cap.he_cap_elem.mac_cap_info[0] &
1981             IEEE80211_HE_MAC_CAP0_HTC_HE)
1982                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
1983         if ((sta->he_cap.he_cap_elem.mac_cap_info[1] &
1984               IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
1985             (sta->he_cap.he_cap_elem.mac_cap_info[2] &
1986               IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
1987                 u8 link_adap =
1988                         ((sta->he_cap.he_cap_elem.mac_cap_info[2] &
1989                           IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
1990                          (sta->he_cap.he_cap_elem.mac_cap_info[1] &
1991                           IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
1992
1993                 if (link_adap == 2)
1994                         sta_ctxt_cmd.htc_flags |=
1995                                 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
1996                 else if (link_adap == 3)
1997                         sta_ctxt_cmd.htc_flags |=
1998                                 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
1999         }
2000         if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
2001                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
2002         if (sta->he_cap.he_cap_elem.mac_cap_info[3] &
2003             IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
2004                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
2005         if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
2006                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
2007
2008         /* If PPE Thresholds exist, parse them into a FW-familiar format */
2009         if (sta->he_cap.he_cap_elem.phy_cap_info[6] &
2010             IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
2011                 u8 nss = (sta->he_cap.ppe_thres[0] &
2012                           IEEE80211_PPE_THRES_NSS_MASK) + 1;
2013                 u8 ru_index_bitmap =
2014                         (sta->he_cap.ppe_thres[0] &
2015                          IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >>
2016                         IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS;
2017                 u8 *ppe = &sta->he_cap.ppe_thres[0];
2018                 u8 ppe_pos_bit = 7; /* Starting after PPE header */
2019
2020                 /*
2021                  * FW currently supports only nss == MAX_HE_SUPP_NSS
2022                  *
2023                  * If nss > MAX: we can ignore values we don't support
2024                  * If nss < MAX: we can set zeros in other streams
2025                  */
2026                 if (nss > MAX_HE_SUPP_NSS) {
2027                         IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
2028                                  MAX_HE_SUPP_NSS);
2029                         nss = MAX_HE_SUPP_NSS;
2030                 }
2031
2032                 for (i = 0; i < nss; i++) {
2033                         u8 ru_index_tmp = ru_index_bitmap << 1;
2034                         u8 bw;
2035
2036                         for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) {
2037                                 ru_index_tmp >>= 1;
2038                                 if (!(ru_index_tmp & 1))
2039                                         continue;
2040
2041                                 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] =
2042                                         iwl_mvm_he_get_ppe_val(ppe,
2043                                                                ppe_pos_bit);
2044                                 ppe_pos_bit +=
2045                                         IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2046                                 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] =
2047                                         iwl_mvm_he_get_ppe_val(ppe,
2048                                                                ppe_pos_bit);
2049                                 ppe_pos_bit +=
2050                                         IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2051                         }
2052                 }
2053
2054                 flags |= STA_CTXT_HE_PACKET_EXT;
2055         }
2056         rcu_read_unlock();
2057
2058         /* Mark MU EDCA as enabled, unless none detected on some AC */
2059         flags |= STA_CTXT_HE_MU_EDCA_CW;
2060         for (i = 0; i < AC_NUM; i++) {
2061                 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
2062                         &mvmvif->queue_params[i].mu_edca_param_rec;
2063
2064                 if (!mvmvif->queue_params[i].mu_edca) {
2065                         flags &= ~STA_CTXT_HE_MU_EDCA_CW;
2066                         break;
2067                 }
2068
2069                 sta_ctxt_cmd.trig_based_txf[i].cwmin =
2070                         cpu_to_le16(mu_edca->ecw_min_max & 0xf);
2071                 sta_ctxt_cmd.trig_based_txf[i].cwmax =
2072                         cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
2073                 sta_ctxt_cmd.trig_based_txf[i].aifsn =
2074                         cpu_to_le16(mu_edca->aifsn);
2075                 sta_ctxt_cmd.trig_based_txf[i].mu_time =
2076                         cpu_to_le16(mu_edca->mu_edca_timer);
2077         }
2078
2079         if (vif->bss_conf.multi_sta_back_32bit)
2080                 flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
2081
2082         if (vif->bss_conf.ack_enabled)
2083                 flags |= STA_CTXT_HE_ACK_ENABLED;
2084
2085         if (vif->bss_conf.uora_exists) {
2086                 flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
2087
2088                 sta_ctxt_cmd.rand_alloc_ecwmin =
2089                         vif->bss_conf.uora_ocw_range & 0x7;
2090                 sta_ctxt_cmd.rand_alloc_ecwmax =
2091                         (vif->bss_conf.uora_ocw_range >> 3) & 0x7;
2092         }
2093
2094         /* TODO: support Multi BSSID IE */
2095
2096         sta_ctxt_cmd.flags = cpu_to_le32(flags);
2097
2098         if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD,
2099                                                  DATA_PATH_GROUP, 0),
2100                                  0, sizeof(sta_ctxt_cmd), &sta_ctxt_cmd))
2101                 IWL_ERR(mvm, "Failed to config FW to work HE!\n");
2102 }
2103
2104 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2105                                              struct ieee80211_vif *vif,
2106                                              struct ieee80211_bss_conf *bss_conf,
2107                                              u32 changes)
2108 {
2109         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2110         int ret;
2111
2112         /*
2113          * Re-calculate the tsf id, as the master-slave relations depend on the
2114          * beacon interval, which was not known when the station interface was
2115          * added.
2116          */
2117         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
2118                 if (vif->bss_conf.he_support &&
2119                     !iwlwifi_mod_params.disable_11ax)
2120                         iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2121
2122                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2123         }
2124
2125         /*
2126          * If we're not associated yet, take the (new) BSSID before associating
2127          * so the firmware knows. If we're already associated, then use the old
2128          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2129          * branch for disassociation below.
2130          */
2131         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2132                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2133
2134         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2135         if (ret)
2136                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2137
2138         /* after sending it once, adopt mac80211 data */
2139         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2140         mvmvif->associated = bss_conf->assoc;
2141
2142         if (changes & BSS_CHANGED_ASSOC) {
2143                 if (bss_conf->assoc) {
2144                         /* clear statistics to get clean beacon counter */
2145                         iwl_mvm_request_statistics(mvm, true);
2146                         memset(&mvmvif->beacon_stats, 0,
2147                                sizeof(mvmvif->beacon_stats));
2148
2149                         /* add quota for this interface */
2150                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
2151                         if (ret) {
2152                                 IWL_ERR(mvm, "failed to update quotas\n");
2153                                 return;
2154                         }
2155
2156                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2157                                      &mvm->status)) {
2158                                 /*
2159                                  * If we're restarting then the firmware will
2160                                  * obviously have lost synchronisation with
2161                                  * the AP. It will attempt to synchronise by
2162                                  * itself, but we can make it more reliable by
2163                                  * scheduling a session protection time event.
2164                                  *
2165                                  * The firmware needs to receive a beacon to
2166                                  * catch up with synchronisation, use 110% of
2167                                  * the beacon interval.
2168                                  *
2169                                  * Set a large maximum delay to allow for more
2170                                  * than a single interface.
2171                                  */
2172                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2173                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
2174                                                         5 * dur, false);
2175                         }
2176
2177                         iwl_mvm_sf_update(mvm, vif, false);
2178                         iwl_mvm_power_vif_assoc(mvm, vif);
2179                         if (vif->p2p) {
2180                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2181                                 iwl_mvm_update_smps(mvm, vif,
2182                                                     IWL_MVM_SMPS_REQ_PROT,
2183                                                     IEEE80211_SMPS_DYNAMIC);
2184                         }
2185                 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2186                         /*
2187                          * If update fails - SF might be running in associated
2188                          * mode while disassociated - which is forbidden.
2189                          */
2190                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2191                                   "Failed to update SF upon disassociation\n");
2192
2193                         /*
2194                          * If we get an assert during the connection (after the
2195                          * station has been added, but before the vif is set
2196                          * to associated), mac80211 will re-add the station and
2197                          * then configure the vif. Since the vif is not
2198                          * associated, we would remove the station here and
2199                          * this would fail the recovery.
2200                          */
2201                         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2202                                       &mvm->status)) {
2203                                 /*
2204                                  * Remove AP station now that
2205                                  * the MAC is unassoc
2206                                  */
2207                                 ret = iwl_mvm_rm_sta_id(mvm, vif,
2208                                                         mvmvif->ap_sta_id);
2209                                 if (ret)
2210                                         IWL_ERR(mvm,
2211                                                 "failed to remove AP station\n");
2212
2213                                 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2214                                         mvm->d0i3_ap_sta_id =
2215                                                 IWL_MVM_INVALID_STA;
2216                                 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2217                         }
2218
2219                         /* remove quota for this interface */
2220                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2221                         if (ret)
2222                                 IWL_ERR(mvm, "failed to update quotas\n");
2223
2224                         if (vif->p2p)
2225                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2226
2227                         /* this will take the cleared BSSID from bss_conf */
2228                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2229                         if (ret)
2230                                 IWL_ERR(mvm,
2231                                         "failed to update MAC %pM (clear after unassoc)\n",
2232                                         vif->addr);
2233                 }
2234
2235                 /*
2236                  * The firmware tracks the MU-MIMO group on its own.
2237                  * However, on HW restart we should restore this data.
2238                  */
2239                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2240                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2241                         ret = iwl_mvm_update_mu_groups(mvm, vif);
2242                         if (ret)
2243                                 IWL_ERR(mvm,
2244                                         "failed to update VHT MU_MIMO groups\n");
2245                 }
2246
2247                 iwl_mvm_recalc_multicast(mvm);
2248                 iwl_mvm_configure_bcast_filter(mvm);
2249
2250                 /* reset rssi values */
2251                 mvmvif->bf_data.ave_beacon_signal = 0;
2252
2253                 iwl_mvm_bt_coex_vif_change(mvm);
2254                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2255                                     IEEE80211_SMPS_AUTOMATIC);
2256                 if (fw_has_capa(&mvm->fw->ucode_capa,
2257                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2258                         iwl_mvm_config_scan(mvm);
2259         }
2260
2261         if (changes & BSS_CHANGED_BEACON_INFO) {
2262                 /*
2263                  * We received a beacon from the associated AP so
2264                  * remove the session protection.
2265                  */
2266                 iwl_mvm_stop_session_protection(mvm, vif);
2267
2268                 iwl_mvm_sf_update(mvm, vif, false);
2269                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2270         }
2271
2272         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2273                        /*
2274                         * Send power command on every beacon change,
2275                         * because we may have not enabled beacon abort yet.
2276                         */
2277                        BSS_CHANGED_BEACON_INFO)) {
2278                 ret = iwl_mvm_power_update_mac(mvm);
2279                 if (ret)
2280                         IWL_ERR(mvm, "failed to update power mode\n");
2281         }
2282
2283         if (changes & BSS_CHANGED_TXPOWER) {
2284                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2285                                 bss_conf->txpower);
2286                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2287         }
2288
2289         if (changes & BSS_CHANGED_CQM) {
2290                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2291                 /* reset cqm events tracking */
2292                 mvmvif->bf_data.last_cqm_event = 0;
2293                 if (mvmvif->bf_data.bf_enabled) {
2294                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2295                         if (ret)
2296                                 IWL_ERR(mvm,
2297                                         "failed to update CQM thresholds\n");
2298                 }
2299         }
2300
2301         if (changes & BSS_CHANGED_ARP_FILTER) {
2302                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2303                 iwl_mvm_configure_bcast_filter(mvm);
2304         }
2305 }
2306
2307 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2308                                  struct ieee80211_vif *vif)
2309 {
2310         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2311         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2312         int ret;
2313
2314         /*
2315          * iwl_mvm_mac_ctxt_add() might read directly from the device
2316          * (the system time), so make sure it is available.
2317          */
2318         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2319         if (ret)
2320                 return ret;
2321
2322         mutex_lock(&mvm->mutex);
2323
2324         /* Send the beacon template */
2325         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2326         if (ret)
2327                 goto out_unlock;
2328
2329         /*
2330          * Re-calculate the tsf id, as the master-slave relations depend on the
2331          * beacon interval, which was not known when the AP interface was added.
2332          */
2333         if (vif->type == NL80211_IFTYPE_AP)
2334                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2335
2336         mvmvif->ap_assoc_sta_count = 0;
2337
2338         /* Add the mac context */
2339         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2340         if (ret)
2341                 goto out_unlock;
2342
2343         /* Perform the binding */
2344         ret = iwl_mvm_binding_add_vif(mvm, vif);
2345         if (ret)
2346                 goto out_remove;
2347
2348         /*
2349          * This is not very nice, but the simplest:
2350          * For older FWs adding the mcast sta before the bcast station may
2351          * cause assert 0x2b00.
2352          * This is fixed in later FW so make the order of removal depend on
2353          * the TLV
2354          */
2355         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2356                 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2357                 if (ret)
2358                         goto out_unbind;
2359                 /*
2360                  * Send the bcast station. At this stage the TBTT and DTIM time
2361                  * events are added and applied to the scheduler
2362                  */
2363                 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2364                 if (ret) {
2365                         iwl_mvm_rm_mcast_sta(mvm, vif);
2366                         goto out_unbind;
2367                 }
2368         } else {
2369                 /*
2370                  * Send the bcast station. At this stage the TBTT and DTIM time
2371                  * events are added and applied to the scheduler
2372                  */
2373                 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2374                 if (ret)
2375                         goto out_unbind;
2376                 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2377                 if (ret) {
2378                         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2379                         goto out_unbind;
2380                 }
2381         }
2382
2383         /* must be set before quota calculations */
2384         mvmvif->ap_ibss_active = true;
2385
2386         /* power updated needs to be done before quotas */
2387         iwl_mvm_power_update_mac(mvm);
2388
2389         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2390         if (ret)
2391                 goto out_quota_failed;
2392
2393         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2394         if (vif->p2p && mvm->p2p_device_vif)
2395                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2396
2397         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2398
2399         iwl_mvm_bt_coex_vif_change(mvm);
2400
2401         /* we don't support TDLS during DCM */
2402         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2403                 iwl_mvm_teardown_tdls_peers(mvm);
2404
2405         goto out_unlock;
2406
2407 out_quota_failed:
2408         iwl_mvm_power_update_mac(mvm);
2409         mvmvif->ap_ibss_active = false;
2410         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2411         iwl_mvm_rm_mcast_sta(mvm, vif);
2412 out_unbind:
2413         iwl_mvm_binding_remove_vif(mvm, vif);
2414 out_remove:
2415         iwl_mvm_mac_ctxt_remove(mvm, vif);
2416 out_unlock:
2417         mutex_unlock(&mvm->mutex);
2418         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2419         return ret;
2420 }
2421
2422 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2423                                  struct ieee80211_vif *vif)
2424 {
2425         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2426         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2427
2428         iwl_mvm_prepare_mac_removal(mvm, vif);
2429
2430         mutex_lock(&mvm->mutex);
2431
2432         /* Handle AP stop while in CSA */
2433         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2434                 iwl_mvm_remove_time_event(mvm, mvmvif,
2435                                           &mvmvif->time_event_data);
2436                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2437                 mvmvif->csa_countdown = false;
2438         }
2439
2440         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2441                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2442                 mvm->csa_tx_block_bcn_timeout = 0;
2443         }
2444
2445         mvmvif->ap_ibss_active = false;
2446         mvm->ap_last_beacon_gp2 = 0;
2447
2448         iwl_mvm_bt_coex_vif_change(mvm);
2449
2450         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2451
2452         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2453         if (vif->p2p && mvm->p2p_device_vif)
2454                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2455
2456         iwl_mvm_update_quotas(mvm, false, NULL);
2457
2458         /*
2459          * This is not very nice, but the simplest:
2460          * For older FWs removing the mcast sta before the bcast station may
2461          * cause assert 0x2b00.
2462          * This is fixed in later FW (which will stop beaconing when removing
2463          * bcast station).
2464          * So make the order of removal depend on the TLV
2465          */
2466         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2467                 iwl_mvm_rm_mcast_sta(mvm, vif);
2468         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2469         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2470                 iwl_mvm_rm_mcast_sta(mvm, vif);
2471         iwl_mvm_binding_remove_vif(mvm, vif);
2472
2473         iwl_mvm_power_update_mac(mvm);
2474
2475         iwl_mvm_mac_ctxt_remove(mvm, vif);
2476
2477         kfree(mvmvif->ap_wep_key);
2478         mvmvif->ap_wep_key = NULL;
2479
2480         mutex_unlock(&mvm->mutex);
2481 }
2482
2483 static void
2484 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2485                                  struct ieee80211_vif *vif,
2486                                  struct ieee80211_bss_conf *bss_conf,
2487                                  u32 changes)
2488 {
2489         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2490
2491         /* Changes will be applied when the AP/IBSS is started */
2492         if (!mvmvif->ap_ibss_active)
2493                 return;
2494
2495         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2496                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2497             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2498                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2499
2500         /* Need to send a new beacon template to the FW */
2501         if (changes & BSS_CHANGED_BEACON &&
2502             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2503                 IWL_WARN(mvm, "Failed updating beacon data\n");
2504
2505         if (changes & BSS_CHANGED_TXPOWER) {
2506                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2507                                 bss_conf->txpower);
2508                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2509         }
2510 }
2511
2512 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2513                                      struct ieee80211_vif *vif,
2514                                      struct ieee80211_bss_conf *bss_conf,
2515                                      u32 changes)
2516 {
2517         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2518
2519         /*
2520          * iwl_mvm_bss_info_changed_station() might call
2521          * iwl_mvm_protect_session(), which reads directly from
2522          * the device (the system time), so make sure it is available.
2523          */
2524         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2525                 return;
2526
2527         mutex_lock(&mvm->mutex);
2528
2529         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2530                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2531
2532         switch (vif->type) {
2533         case NL80211_IFTYPE_STATION:
2534                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2535                 break;
2536         case NL80211_IFTYPE_AP:
2537         case NL80211_IFTYPE_ADHOC:
2538                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2539                 break;
2540         case NL80211_IFTYPE_MONITOR:
2541                 if (changes & BSS_CHANGED_MU_GROUPS)
2542                         iwl_mvm_update_mu_groups(mvm, vif);
2543                 break;
2544         default:
2545                 /* shouldn't happen */
2546                 WARN_ON_ONCE(1);
2547         }
2548
2549         mutex_unlock(&mvm->mutex);
2550         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2551 }
2552
2553 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2554                                struct ieee80211_vif *vif,
2555                                struct ieee80211_scan_request *hw_req)
2556 {
2557         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2558         int ret;
2559
2560         if (hw_req->req.n_channels == 0 ||
2561             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2562                 return -EINVAL;
2563
2564         mutex_lock(&mvm->mutex);
2565         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2566         mutex_unlock(&mvm->mutex);
2567
2568         return ret;
2569 }
2570
2571 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2572                                        struct ieee80211_vif *vif)
2573 {
2574         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2575
2576         mutex_lock(&mvm->mutex);
2577
2578         /* Due to a race condition, it's possible that mac80211 asks
2579          * us to stop a hw_scan when it's already stopped.  This can
2580          * happen, for instance, if we stopped the scan ourselves,
2581          * called ieee80211_scan_completed() and the userspace called
2582          * cancel scan scan before ieee80211_scan_work() could run.
2583          * To handle that, simply return if the scan is not running.
2584         */
2585         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2586                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2587
2588         mutex_unlock(&mvm->mutex);
2589 }
2590
2591 static void
2592 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2593                                   struct ieee80211_sta *sta, u16 tids,
2594                                   int num_frames,
2595                                   enum ieee80211_frame_release_type reason,
2596                                   bool more_data)
2597 {
2598         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2599
2600         /* Called when we need to transmit (a) frame(s) from mac80211 */
2601
2602         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2603                                           tids, more_data, false);
2604 }
2605
2606 static void
2607 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2608                                     struct ieee80211_sta *sta, u16 tids,
2609                                     int num_frames,
2610                                     enum ieee80211_frame_release_type reason,
2611                                     bool more_data)
2612 {
2613         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2614
2615         /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2616
2617         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2618                                           tids, more_data, true);
2619 }
2620
2621 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2622                                      enum sta_notify_cmd cmd,
2623                                      struct ieee80211_sta *sta)
2624 {
2625         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2626         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2627         unsigned long txqs = 0, tids = 0;
2628         int tid;
2629
2630         /*
2631          * If we have TVQM then we get too high queue numbers - luckily
2632          * we really shouldn't get here with that because such hardware
2633          * should have firmware supporting buffer station offload.
2634          */
2635         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2636                 return;
2637
2638         spin_lock_bh(&mvmsta->lock);
2639         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2640                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2641
2642                 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2643                         continue;
2644
2645                 __set_bit(tid_data->txq_id, &txqs);
2646
2647                 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2648                         continue;
2649
2650                 __set_bit(tid, &tids);
2651         }
2652
2653         switch (cmd) {
2654         case STA_NOTIFY_SLEEP:
2655                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2656                         ieee80211_sta_set_buffered(sta, tid, true);
2657
2658                 if (txqs)
2659                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2660                 /*
2661                  * The fw updates the STA to be asleep. Tx packets on the Tx
2662                  * queues to this station will not be transmitted. The fw will
2663                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2664                  */
2665                 break;
2666         case STA_NOTIFY_AWAKE:
2667                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2668                         break;
2669
2670                 if (txqs)
2671                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2672                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2673                 break;
2674         default:
2675                 break;
2676         }
2677         spin_unlock_bh(&mvmsta->lock);
2678 }
2679
2680 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2681                                    struct ieee80211_vif *vif,
2682                                    enum sta_notify_cmd cmd,
2683                                    struct ieee80211_sta *sta)
2684 {
2685         __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2686 }
2687
2688 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2689 {
2690         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2691         struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2692         struct ieee80211_sta *sta;
2693         struct iwl_mvm_sta *mvmsta;
2694         bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2695
2696         if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2697                 return;
2698
2699         rcu_read_lock();
2700         sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2701         if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2702                 rcu_read_unlock();
2703                 return;
2704         }
2705
2706         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2707
2708         if (!mvmsta->vif ||
2709             mvmsta->vif->type != NL80211_IFTYPE_AP) {
2710                 rcu_read_unlock();
2711                 return;
2712         }
2713
2714         if (mvmsta->sleeping != sleeping) {
2715                 mvmsta->sleeping = sleeping;
2716                 __iwl_mvm_mac_sta_notify(mvm->hw,
2717                         sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2718                         sta);
2719                 ieee80211_sta_ps_transition(sta, sleeping);
2720         }
2721
2722         if (sleeping) {
2723                 switch (notif->type) {
2724                 case IWL_MVM_PM_EVENT_AWAKE:
2725                 case IWL_MVM_PM_EVENT_ASLEEP:
2726                         break;
2727                 case IWL_MVM_PM_EVENT_UAPSD:
2728                         ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2729                         break;
2730                 case IWL_MVM_PM_EVENT_PS_POLL:
2731                         ieee80211_sta_pspoll(sta);
2732                         break;
2733                 default:
2734                         break;
2735                 }
2736         }
2737
2738         rcu_read_unlock();
2739 }
2740
2741 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2742                                        struct ieee80211_vif *vif,
2743                                        struct ieee80211_sta *sta)
2744 {
2745         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2746         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2747
2748         /*
2749          * This is called before mac80211 does RCU synchronisation,
2750          * so here we already invalidate our internal RCU-protected
2751          * station pointer. The rest of the code will thus no longer
2752          * be able to find the station this way, and we don't rely
2753          * on further RCU synchronisation after the sta_state()
2754          * callback deleted the station.
2755          */
2756         mutex_lock(&mvm->mutex);
2757         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2758                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2759                                    ERR_PTR(-ENOENT));
2760
2761         mutex_unlock(&mvm->mutex);
2762 }
2763
2764 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2765                                 const u8 *bssid)
2766 {
2767         int i;
2768
2769         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2770                 struct iwl_mvm_tcm_mac *mdata;
2771
2772                 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
2773                 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
2774                 mdata->opened_rx_ba_sessions = false;
2775         }
2776
2777         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2778                 return;
2779
2780         if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2781                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2782                 return;
2783         }
2784
2785         if (!vif->p2p &&
2786             (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2787                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2788                 return;
2789         }
2790
2791         for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
2792                 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
2793                         vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2794                         return;
2795                 }
2796         }
2797
2798         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2799 }
2800
2801 static void
2802 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2803                            struct ieee80211_vif *vif, u8 *peer_addr,
2804                            enum nl80211_tdls_operation action)
2805 {
2806         struct iwl_fw_dbg_trigger_tlv *trig;
2807         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2808
2809         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
2810                                      FW_DBG_TRIGGER_TDLS);
2811         if (!trig)
2812                 return;
2813
2814         tdls_trig = (void *)trig->data;
2815
2816         if (!(tdls_trig->action_bitmap & BIT(action)))
2817                 return;
2818
2819         if (tdls_trig->peer_mode &&
2820             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2821                 return;
2822
2823         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2824                                 "TDLS event occurred, peer %pM, action %d",
2825                                 peer_addr, action);
2826 }
2827
2828 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2829                                              struct iwl_mvm_sta *mvm_sta)
2830 {
2831         struct iwl_mvm_tid_data *tid_data;
2832         struct sk_buff *skb;
2833         int i;
2834
2835         spin_lock_bh(&mvm_sta->lock);
2836         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2837                 tid_data = &mvm_sta->tid_data[i];
2838
2839                 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) {
2840                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2841
2842                         /*
2843                          * The first deferred frame should've stopped the MAC
2844                          * queues, so we should never get a second deferred
2845                          * frame for the RA/TID.
2846                          */
2847                         iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue));
2848                         ieee80211_free_txskb(mvm->hw, skb);
2849                 }
2850         }
2851         spin_unlock_bh(&mvm_sta->lock);
2852 }
2853
2854 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2855                                  struct ieee80211_vif *vif,
2856                                  struct ieee80211_sta *sta,
2857                                  enum ieee80211_sta_state old_state,
2858                                  enum ieee80211_sta_state new_state)
2859 {
2860         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2861         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2862         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2863         int ret;
2864
2865         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2866                            sta->addr, old_state, new_state);
2867
2868         /* this would be a mac80211 bug ... but don't crash */
2869         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2870                 return -EINVAL;
2871
2872         /*
2873          * If we are in a STA removal flow and in DQA mode:
2874          *
2875          * This is after the sync_rcu part, so the queues have already been
2876          * flushed. No more TXs on their way in mac80211's path, and no more in
2877          * the queues.
2878          * Also, we won't be getting any new TX frames for this station.
2879          * What we might have are deferred TX frames that need to be taken care
2880          * of.
2881          *
2882          * Drop any still-queued deferred-frame before removing the STA, and
2883          * make sure the worker is no longer handling frames for this STA.
2884          */
2885         if (old_state == IEEE80211_STA_NONE &&
2886             new_state == IEEE80211_STA_NOTEXIST) {
2887                 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2888                 flush_work(&mvm->add_stream_wk);
2889
2890                 /*
2891                  * No need to make sure deferred TX indication is off since the
2892                  * worker will already remove it if it was on
2893                  */
2894         }
2895
2896         mutex_lock(&mvm->mutex);
2897         /* track whether or not the station is associated */
2898         mvm_sta->sta_state = new_state;
2899
2900         if (old_state == IEEE80211_STA_NOTEXIST &&
2901             new_state == IEEE80211_STA_NONE) {
2902                 /*
2903                  * Firmware bug - it'll crash if the beacon interval is less
2904                  * than 16. We can't avoid connecting at all, so refuse the
2905                  * station state change, this will cause mac80211 to abandon
2906                  * attempts to connect to this AP, and eventually wpa_s will
2907                  * blacklist the AP...
2908                  */
2909                 if (vif->type == NL80211_IFTYPE_STATION &&
2910                     vif->bss_conf.beacon_int < 16) {
2911                         IWL_ERR(mvm,
2912                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2913                                 sta->addr, vif->bss_conf.beacon_int);
2914                         ret = -EINVAL;
2915                         goto out_unlock;
2916                 }
2917
2918                 if (sta->tdls &&
2919                     (vif->p2p ||
2920                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2921                                                 IWL_MVM_TDLS_STA_COUNT ||
2922                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2923                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2924                         ret = -EBUSY;
2925                         goto out_unlock;
2926                 }
2927
2928                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2929                 if (sta->tdls && ret == 0) {
2930                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2931                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2932                                                    NL80211_TDLS_SETUP);
2933                 }
2934         } else if (old_state == IEEE80211_STA_NONE &&
2935                    new_state == IEEE80211_STA_AUTH) {
2936                 /*
2937                  * EBS may be disabled due to previous failures reported by FW.
2938                  * Reset EBS status here assuming environment has been changed.
2939                  */
2940                 mvm->last_ebs_successful = true;
2941                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2942                 ret = 0;
2943         } else if (old_state == IEEE80211_STA_AUTH &&
2944                    new_state == IEEE80211_STA_ASSOC) {
2945                 if (vif->type == NL80211_IFTYPE_AP) {
2946                         mvmvif->ap_assoc_sta_count++;
2947                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2948                 }
2949
2950                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2951                                      false);
2952                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2953         } else if (old_state == IEEE80211_STA_ASSOC &&
2954                    new_state == IEEE80211_STA_AUTHORIZED) {
2955
2956                 /* we don't support TDLS during DCM */
2957                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2958                         iwl_mvm_teardown_tdls_peers(mvm);
2959
2960                 if (sta->tdls)
2961                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2962                                                    NL80211_TDLS_ENABLE_LINK);
2963
2964                 /* enable beacon filtering */
2965                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2966
2967                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2968                                      true);
2969
2970                 /* if wep is used, need to set the key for the station now */
2971                 if (vif->type == NL80211_IFTYPE_AP && mvmvif->ap_wep_key)
2972                         ret = iwl_mvm_set_sta_key(mvm, vif, sta,
2973                                                   mvmvif->ap_wep_key,
2974                                                   STA_KEY_IDX_INVALID);
2975                 else
2976                         ret = 0;
2977         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2978                    new_state == IEEE80211_STA_ASSOC) {
2979                 /* disable beacon filtering */
2980                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2981                 ret = 0;
2982         } else if (old_state == IEEE80211_STA_ASSOC &&
2983                    new_state == IEEE80211_STA_AUTH) {
2984                 if (vif->type == NL80211_IFTYPE_AP) {
2985                         mvmvif->ap_assoc_sta_count--;
2986                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2987                 }
2988                 ret = 0;
2989         } else if (old_state == IEEE80211_STA_AUTH &&
2990                    new_state == IEEE80211_STA_NONE) {
2991                 ret = 0;
2992         } else if (old_state == IEEE80211_STA_NONE &&
2993                    new_state == IEEE80211_STA_NOTEXIST) {
2994                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2995                 if (sta->tdls) {
2996                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2997                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2998                                                    NL80211_TDLS_DISABLE_LINK);
2999                 }
3000         } else {
3001                 ret = -EIO;
3002         }
3003  out_unlock:
3004         mutex_unlock(&mvm->mutex);
3005
3006         if (sta->tdls && ret == 0) {
3007                 if (old_state == IEEE80211_STA_NOTEXIST &&
3008                     new_state == IEEE80211_STA_NONE)
3009                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3010                 else if (old_state == IEEE80211_STA_NONE &&
3011                          new_state == IEEE80211_STA_NOTEXIST)
3012                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3013         }
3014
3015         return ret;
3016 }
3017
3018 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3019 {
3020         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3021
3022         mvm->rts_threshold = value;
3023
3024         return 0;
3025 }
3026
3027 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
3028                                   struct ieee80211_vif *vif,
3029                                   struct ieee80211_sta *sta, u32 changed)
3030 {
3031         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3032
3033         if (vif->type == NL80211_IFTYPE_STATION &&
3034             changed & IEEE80211_RC_NSS_CHANGED)
3035                 iwl_mvm_sf_update(mvm, vif, false);
3036 }
3037
3038 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
3039                                struct ieee80211_vif *vif, u16 ac,
3040                                const struct ieee80211_tx_queue_params *params)
3041 {
3042         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3043         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3044
3045         mvmvif->queue_params[ac] = *params;
3046
3047         /*
3048          * No need to update right away, we'll get BSS_CHANGED_QOS
3049          * The exception is P2P_DEVICE interface which needs immediate update.
3050          */
3051         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
3052                 int ret;
3053
3054                 mutex_lock(&mvm->mutex);
3055                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3056                 mutex_unlock(&mvm->mutex);
3057                 return ret;
3058         }
3059         return 0;
3060 }
3061
3062 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3063                                        struct ieee80211_vif *vif,
3064                                        u16 req_duration)
3065 {
3066         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3067         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
3068         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
3069
3070         /*
3071          * iwl_mvm_protect_session() reads directly from the device
3072          * (the system time), so make sure it is available.
3073          */
3074         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
3075                 return;
3076
3077         if (req_duration > duration)
3078                 duration = req_duration;
3079
3080         mutex_lock(&mvm->mutex);
3081         /* Try really hard to protect the session and hear a beacon */
3082         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
3083         mutex_unlock(&mvm->mutex);
3084
3085         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
3086 }
3087
3088 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
3089                                         struct ieee80211_vif *vif,
3090                                         struct cfg80211_sched_scan_request *req,
3091                                         struct ieee80211_scan_ies *ies)
3092 {
3093         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3094
3095         int ret;
3096
3097         mutex_lock(&mvm->mutex);
3098
3099         if (!vif->bss_conf.idle) {
3100                 ret = -EBUSY;
3101                 goto out;
3102         }
3103
3104         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3105
3106 out:
3107         mutex_unlock(&mvm->mutex);
3108         return ret;
3109 }
3110
3111 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
3112                                        struct ieee80211_vif *vif)
3113 {
3114         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3115         int ret;
3116
3117         mutex_lock(&mvm->mutex);
3118
3119         /* Due to a race condition, it's possible that mac80211 asks
3120          * us to stop a sched_scan when it's already stopped.  This
3121          * can happen, for instance, if we stopped the scan ourselves,
3122          * called ieee80211_sched_scan_stopped() and the userspace called
3123          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
3124          * could run.  To handle this, simply return if the scan is
3125          * not running.
3126         */
3127         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3128                 mutex_unlock(&mvm->mutex);
3129                 return 0;
3130         }
3131
3132         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3133         mutex_unlock(&mvm->mutex);
3134         iwl_mvm_wait_for_async_handlers(mvm);
3135
3136         return ret;
3137 }
3138
3139 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3140                                enum set_key_cmd cmd,
3141                                struct ieee80211_vif *vif,
3142                                struct ieee80211_sta *sta,
3143                                struct ieee80211_key_conf *key)
3144 {
3145         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3146         struct iwl_mvm_sta *mvmsta;
3147         struct iwl_mvm_key_pn *ptk_pn;
3148         int keyidx = key->keyidx;
3149         int ret;
3150         u8 key_offset;
3151
3152         if (iwlwifi_mod_params.swcrypto) {
3153                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
3154                 return -EOPNOTSUPP;
3155         }
3156
3157         switch (key->cipher) {
3158         case WLAN_CIPHER_SUITE_TKIP:
3159                 if (!mvm->trans->cfg->gen2) {
3160                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3161                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3162                 } else if (vif->type == NL80211_IFTYPE_STATION) {
3163                         key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
3164                 } else {
3165                         IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
3166                         return -EOPNOTSUPP;
3167                 }
3168                 break;
3169         case WLAN_CIPHER_SUITE_CCMP:
3170         case WLAN_CIPHER_SUITE_GCMP:
3171         case WLAN_CIPHER_SUITE_GCMP_256:
3172                 if (!iwl_mvm_has_new_tx_api(mvm))
3173                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3174                 break;
3175         case WLAN_CIPHER_SUITE_AES_CMAC:
3176         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3177         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3178                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3179                 break;
3180         case WLAN_CIPHER_SUITE_WEP40:
3181         case WLAN_CIPHER_SUITE_WEP104:
3182                 if (vif->type == NL80211_IFTYPE_AP) {
3183                         struct iwl_mvm_vif *mvmvif =
3184                                 iwl_mvm_vif_from_mac80211(vif);
3185
3186                         mvmvif->ap_wep_key = kmemdup(key,
3187                                                      sizeof(*key) + key->keylen,
3188                                                      GFP_KERNEL);
3189                         if (!mvmvif->ap_wep_key)
3190                                 return -ENOMEM;
3191                 }
3192
3193                 if (vif->type != NL80211_IFTYPE_STATION)
3194                         return 0;
3195                 break;
3196         default:
3197                 /* currently FW supports only one optional cipher scheme */
3198                 if (hw->n_cipher_schemes &&
3199                     hw->cipher_schemes->cipher == key->cipher)
3200                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3201                 else
3202                         return -EOPNOTSUPP;
3203         }
3204
3205         mutex_lock(&mvm->mutex);
3206
3207         switch (cmd) {
3208         case SET_KEY:
3209                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
3210                      vif->type == NL80211_IFTYPE_AP) && !sta) {
3211                         /*
3212                          * GTK on AP interface is a TX-only key, return 0;
3213                          * on IBSS they're per-station and because we're lazy
3214                          * we don't support them for RX, so do the same.
3215                          * CMAC/GMAC in AP/IBSS modes must be done in software.
3216                          */
3217                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3218                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3219                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3220                                 ret = -EOPNOTSUPP;
3221                         else
3222                                 ret = 0;
3223
3224                         if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
3225                             key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
3226                             !iwl_mvm_has_new_tx_api(mvm)) {
3227                                 key->hw_key_idx = STA_KEY_IDX_INVALID;
3228                                 break;
3229                         }
3230                 }
3231
3232                 /* During FW restart, in order to restore the state as it was,
3233                  * don't try to reprogram keys we previously failed for.
3234                  */
3235                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3236                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
3237                         IWL_DEBUG_MAC80211(mvm,
3238                                            "skip invalid idx key programming during restart\n");
3239                         ret = 0;
3240                         break;
3241                 }
3242
3243                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3244                     sta && iwl_mvm_has_new_rx_api(mvm) &&
3245                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3246                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3247                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3248                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3249                         struct ieee80211_key_seq seq;
3250                         int tid, q;
3251
3252                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
3253                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3254                         ptk_pn = kzalloc(struct_size(ptk_pn, q,
3255                                                      mvm->trans->num_rx_queues),
3256                                          GFP_KERNEL);
3257                         if (!ptk_pn) {
3258                                 ret = -ENOMEM;
3259                                 break;
3260                         }
3261
3262                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3263                                 ieee80211_get_key_rx_seq(key, tid, &seq);
3264                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3265                                         memcpy(ptk_pn->q[q].pn[tid],
3266                                                seq.ccmp.pn,
3267                                                IEEE80211_CCMP_PN_LEN);
3268                         }
3269
3270                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3271                 }
3272
3273                 /* in HW restart reuse the index, otherwise request a new one */
3274                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3275                         key_offset = key->hw_key_idx;
3276                 else
3277                         key_offset = STA_KEY_IDX_INVALID;
3278
3279                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3280                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3281                 if (ret) {
3282                         IWL_WARN(mvm, "set key failed\n");
3283                         /*
3284                          * can't add key for RX, but we don't need it
3285                          * in the device for TX so still return 0
3286                          */
3287                         key->hw_key_idx = STA_KEY_IDX_INVALID;
3288                         ret = 0;
3289                 }
3290
3291                 break;
3292         case DISABLE_KEY:
3293                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3294                         ret = 0;
3295                         break;
3296                 }
3297
3298                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3299                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3300                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3301                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3302                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3303                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
3304                         ptk_pn = rcu_dereference_protected(
3305                                                 mvmsta->ptk_pn[keyidx],
3306                                                 lockdep_is_held(&mvm->mutex));
3307                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3308                         if (ptk_pn)
3309                                 kfree_rcu(ptk_pn, rcu_head);
3310                 }
3311
3312                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3313                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3314                 break;
3315         default:
3316                 ret = -EINVAL;
3317         }
3318
3319         mutex_unlock(&mvm->mutex);
3320         return ret;
3321 }
3322
3323 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3324                                         struct ieee80211_vif *vif,
3325                                         struct ieee80211_key_conf *keyconf,
3326                                         struct ieee80211_sta *sta,
3327                                         u32 iv32, u16 *phase1key)
3328 {
3329         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3330
3331         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3332                 return;
3333
3334         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3335 }
3336
3337
3338 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3339                                struct iwl_rx_packet *pkt, void *data)
3340 {
3341         struct iwl_mvm *mvm =
3342                 container_of(notif_wait, struct iwl_mvm, notif_wait);
3343         struct iwl_hs20_roc_res *resp;
3344         int resp_len = iwl_rx_packet_payload_len(pkt);
3345         struct iwl_mvm_time_event_data *te_data = data;
3346
3347         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3348                 return true;
3349
3350         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3351                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3352                 return true;
3353         }
3354
3355         resp = (void *)pkt->data;
3356
3357         IWL_DEBUG_TE(mvm,
3358                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3359                      resp->status, resp->event_unique_id);
3360
3361         te_data->uid = le32_to_cpu(resp->event_unique_id);
3362         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3363                      te_data->uid);
3364
3365         spin_lock_bh(&mvm->time_event_lock);
3366         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3367         spin_unlock_bh(&mvm->time_event_lock);
3368
3369         return true;
3370 }
3371
3372 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3373 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3374 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3375 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3376 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3377 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3378                                     struct ieee80211_channel *channel,
3379                                     struct ieee80211_vif *vif,
3380                                     int duration)
3381 {
3382         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3383         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3384         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3385         static const u16 time_event_response[] = { HOT_SPOT_CMD };
3386         struct iwl_notification_wait wait_time_event;
3387         u32 dtim_interval = vif->bss_conf.dtim_period *
3388                 vif->bss_conf.beacon_int;
3389         u32 req_dur, delay;
3390         struct iwl_hs20_roc_req aux_roc_req = {
3391                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3392                 .id_and_color =
3393                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3394                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3395                 /* Set the channel info data */
3396                 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3397                         PHY_BAND_24 : PHY_BAND_5,
3398                 .channel_info.channel = channel->hw_value,
3399                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3400                 /* Set the time and duration */
3401                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3402          };
3403
3404         delay = AUX_ROC_MIN_DELAY;
3405         req_dur = MSEC_TO_TU(duration);
3406
3407         /*
3408          * If we are associated we want the delay time to be at least one
3409          * dtim interval so that the FW can wait until after the DTIM and
3410          * then start the time event, this will potentially allow us to
3411          * remain off-channel for the max duration.
3412          * Since we want to use almost a whole dtim interval we would also
3413          * like the delay to be for 2-3 dtim intervals, in case there are
3414          * other time events with higher priority.
3415          */
3416         if (vif->bss_conf.assoc) {
3417                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3418                 /* We cannot remain off-channel longer than the DTIM interval */
3419                 if (dtim_interval <= req_dur) {
3420                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3421                         if (req_dur <= AUX_ROC_MIN_DURATION)
3422                                 req_dur = dtim_interval -
3423                                         AUX_ROC_MIN_SAFETY_BUFFER;
3424                 }
3425         }
3426
3427         aux_roc_req.duration = cpu_to_le32(req_dur);
3428         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3429
3430         IWL_DEBUG_TE(mvm,
3431                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3432                      channel->hw_value, req_dur, duration, delay,
3433                      dtim_interval);
3434         /* Set the node address */
3435         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3436
3437         lockdep_assert_held(&mvm->mutex);
3438
3439         spin_lock_bh(&mvm->time_event_lock);
3440
3441         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3442                 spin_unlock_bh(&mvm->time_event_lock);
3443                 return -EIO;
3444         }
3445
3446         te_data->vif = vif;
3447         te_data->duration = duration;
3448         te_data->id = HOT_SPOT_CMD;
3449
3450         spin_unlock_bh(&mvm->time_event_lock);
3451
3452         /*
3453          * Use a notification wait, which really just processes the
3454          * command response and doesn't wait for anything, in order
3455          * to be able to process the response and get the UID inside
3456          * the RX path. Using CMD_WANT_SKB doesn't work because it
3457          * stores the buffer and then wakes up this thread, by which
3458          * time another notification (that the time event started)
3459          * might already be processed unsuccessfully.
3460          */
3461         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3462                                    time_event_response,
3463                                    ARRAY_SIZE(time_event_response),
3464                                    iwl_mvm_rx_aux_roc, te_data);
3465
3466         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3467                                    &aux_roc_req);
3468
3469         if (res) {
3470                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3471                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3472                 goto out_clear_te;
3473         }
3474
3475         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3476         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3477         /* should never fail */
3478         WARN_ON_ONCE(res);
3479
3480         if (res) {
3481  out_clear_te:
3482                 spin_lock_bh(&mvm->time_event_lock);
3483                 iwl_mvm_te_clear_data(mvm, te_data);
3484                 spin_unlock_bh(&mvm->time_event_lock);
3485         }
3486
3487         return res;
3488 }
3489
3490 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3491                        struct ieee80211_vif *vif,
3492                        struct ieee80211_channel *channel,
3493                        int duration,
3494                        enum ieee80211_roc_type type)
3495 {
3496         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3497         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3498         struct cfg80211_chan_def chandef;
3499         struct iwl_mvm_phy_ctxt *phy_ctxt;
3500         int ret, i;
3501
3502         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3503                            duration, type);
3504
3505         /*
3506          * Flush the done work, just in case it's still pending, so that
3507          * the work it does can complete and we can accept new frames.
3508          */
3509         flush_work(&mvm->roc_done_wk);
3510
3511         mutex_lock(&mvm->mutex);
3512
3513         switch (vif->type) {
3514         case NL80211_IFTYPE_STATION:
3515                 if (fw_has_capa(&mvm->fw->ucode_capa,
3516                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3517                         /* Use aux roc framework (HS20) */
3518                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3519                                                        vif, duration);
3520                         goto out_unlock;
3521                 }
3522                 IWL_ERR(mvm, "hotspot not supported\n");
3523                 ret = -EINVAL;
3524                 goto out_unlock;
3525         case NL80211_IFTYPE_P2P_DEVICE:
3526                 /* handle below */
3527                 break;
3528         default:
3529                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3530                 ret = -EINVAL;
3531                 goto out_unlock;
3532         }
3533
3534         for (i = 0; i < NUM_PHY_CTX; i++) {
3535                 phy_ctxt = &mvm->phy_ctxts[i];
3536                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3537                         continue;
3538
3539                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3540                         /*
3541                          * Unbind the P2P_DEVICE from the current PHY context,
3542                          * and if the PHY context is not used remove it.
3543                          */
3544                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3545                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3546                                 goto out_unlock;
3547
3548                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3549
3550                         /* Bind the P2P_DEVICE to the current PHY Context */
3551                         mvmvif->phy_ctxt = phy_ctxt;
3552
3553                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3554                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3555                                 goto out_unlock;
3556
3557                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3558                         goto schedule_time_event;
3559                 }
3560         }
3561
3562         /* Need to update the PHY context only if the ROC channel changed */
3563         if (channel == mvmvif->phy_ctxt->channel)
3564                 goto schedule_time_event;
3565
3566         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3567
3568         /*
3569          * Change the PHY context configuration as it is currently referenced
3570          * only by the P2P Device MAC
3571          */
3572         if (mvmvif->phy_ctxt->ref == 1) {
3573                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3574                                                &chandef, 1, 1);
3575                 if (ret)
3576                         goto out_unlock;
3577         } else {
3578                 /*
3579                  * The PHY context is shared with other MACs. Need to remove the
3580                  * P2P Device from the binding, allocate an new PHY context and
3581                  * create a new binding
3582                  */
3583                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3584                 if (!phy_ctxt) {
3585                         ret = -ENOSPC;
3586                         goto out_unlock;
3587                 }
3588
3589                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3590                                                1, 1);
3591                 if (ret) {
3592                         IWL_ERR(mvm, "Failed to change PHY context\n");
3593                         goto out_unlock;
3594                 }
3595
3596                 /* Unbind the P2P_DEVICE from the current PHY context */
3597                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3598                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3599                         goto out_unlock;
3600
3601                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3602
3603                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3604                 mvmvif->phy_ctxt = phy_ctxt;
3605
3606                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3607                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3608                         goto out_unlock;
3609
3610                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3611         }
3612
3613 schedule_time_event:
3614         /* Schedule the time events */
3615         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3616
3617 out_unlock:
3618         mutex_unlock(&mvm->mutex);
3619         IWL_DEBUG_MAC80211(mvm, "leave\n");
3620         return ret;
3621 }
3622
3623 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3624 {
3625         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3626
3627         IWL_DEBUG_MAC80211(mvm, "enter\n");
3628
3629         mutex_lock(&mvm->mutex);
3630         iwl_mvm_stop_roc(mvm);
3631         mutex_unlock(&mvm->mutex);
3632
3633         IWL_DEBUG_MAC80211(mvm, "leave\n");
3634         return 0;
3635 }
3636
3637 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3638                                  struct ieee80211_chanctx_conf *ctx)
3639 {
3640         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3641         struct iwl_mvm_phy_ctxt *phy_ctxt;
3642         int ret;
3643
3644         lockdep_assert_held(&mvm->mutex);
3645
3646         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3647
3648         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3649         if (!phy_ctxt) {
3650                 ret = -ENOSPC;
3651                 goto out;
3652         }
3653
3654         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3655                                        ctx->rx_chains_static,
3656                                        ctx->rx_chains_dynamic);
3657         if (ret) {
3658                 IWL_ERR(mvm, "Failed to add PHY context\n");
3659                 goto out;
3660         }
3661
3662         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3663         *phy_ctxt_id = phy_ctxt->id;
3664 out:
3665         return ret;
3666 }
3667
3668 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3669                                struct ieee80211_chanctx_conf *ctx)
3670 {
3671         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3672         int ret;
3673
3674         mutex_lock(&mvm->mutex);
3675         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3676         mutex_unlock(&mvm->mutex);
3677
3678         return ret;
3679 }
3680
3681 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3682                                      struct ieee80211_chanctx_conf *ctx)
3683 {
3684         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3685         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3686
3687         lockdep_assert_held(&mvm->mutex);
3688
3689         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3690 }
3691
3692 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3693                                    struct ieee80211_chanctx_conf *ctx)
3694 {
3695         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3696
3697         mutex_lock(&mvm->mutex);
3698         __iwl_mvm_remove_chanctx(mvm, ctx);
3699         mutex_unlock(&mvm->mutex);
3700 }
3701
3702 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3703                                    struct ieee80211_chanctx_conf *ctx,
3704                                    u32 changed)
3705 {
3706         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3707         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3708         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3709
3710         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3711                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3712                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3713                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3714                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3715                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3716                       phy_ctxt->ref, changed))
3717                 return;
3718
3719         mutex_lock(&mvm->mutex);
3720
3721         /* we are only changing the min_width, may be a noop */
3722         if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
3723                 if (phy_ctxt->width == ctx->min_def.width)
3724                         goto out_unlock;
3725
3726                 /* we are just toggling between 20_NOHT and 20 */
3727                 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
3728                     ctx->min_def.width <= NL80211_CHAN_WIDTH_20)
3729                         goto out_unlock;
3730         }
3731
3732         iwl_mvm_bt_coex_vif_change(mvm);
3733         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3734                                  ctx->rx_chains_static,
3735                                  ctx->rx_chains_dynamic);
3736
3737 out_unlock:
3738         mutex_unlock(&mvm->mutex);
3739 }
3740
3741 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3742                                         struct ieee80211_vif *vif,
3743                                         struct ieee80211_chanctx_conf *ctx,
3744                                         bool switching_chanctx)
3745 {
3746         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3747         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3748         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3749         int ret;
3750
3751         lockdep_assert_held(&mvm->mutex);
3752
3753         mvmvif->phy_ctxt = phy_ctxt;
3754
3755         switch (vif->type) {
3756         case NL80211_IFTYPE_AP:
3757                 /* only needed if we're switching chanctx (i.e. during CSA) */
3758                 if (switching_chanctx) {
3759                         mvmvif->ap_ibss_active = true;
3760                         break;
3761                 }
3762         case NL80211_IFTYPE_ADHOC:
3763                 /*
3764                  * The AP binding flow is handled as part of the start_ap flow
3765                  * (in bss_info_changed), similarly for IBSS.
3766                  */
3767                 ret = 0;
3768                 goto out;
3769         case NL80211_IFTYPE_STATION:
3770                 mvmvif->csa_bcn_pending = false;
3771                 break;
3772         case NL80211_IFTYPE_MONITOR:
3773                 /* always disable PS when a monitor interface is active */
3774                 mvmvif->ps_disabled = true;
3775                 break;
3776         default:
3777                 ret = -EINVAL;
3778                 goto out;
3779         }
3780
3781         ret = iwl_mvm_binding_add_vif(mvm, vif);
3782         if (ret)
3783                 goto out;
3784
3785         /*
3786          * Power state must be updated before quotas,
3787          * otherwise fw will complain.
3788          */
3789         iwl_mvm_power_update_mac(mvm);
3790
3791         /* Setting the quota at this stage is only required for monitor
3792          * interfaces. For the other types, the bss_info changed flow
3793          * will handle quota settings.
3794          */
3795         if (vif->type == NL80211_IFTYPE_MONITOR) {
3796                 mvmvif->monitor_active = true;
3797                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3798                 if (ret)
3799                         goto out_remove_binding;
3800
3801                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3802                 if (ret)
3803                         goto out_remove_binding;
3804
3805         }
3806
3807         /* Handle binding during CSA */
3808         if (vif->type == NL80211_IFTYPE_AP) {
3809                 iwl_mvm_update_quotas(mvm, false, NULL);
3810                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3811         }
3812
3813         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3814                 u32 duration = 3 * vif->bss_conf.beacon_int;
3815
3816                 /* iwl_mvm_protect_session() reads directly from the
3817                  * device (the system time), so make sure it is
3818                  * available.
3819                  */
3820                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3821                 if (ret)
3822                         goto out_remove_binding;
3823
3824                 /* Protect the session to make sure we hear the first
3825                  * beacon on the new channel.
3826                  */
3827                 mvmvif->csa_bcn_pending = true;
3828                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3829                                         vif->bss_conf.beacon_int / 2,
3830                                         true);
3831
3832                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3833
3834                 iwl_mvm_update_quotas(mvm, false, NULL);
3835         }
3836
3837         goto out;
3838
3839 out_remove_binding:
3840         iwl_mvm_binding_remove_vif(mvm, vif);
3841         iwl_mvm_power_update_mac(mvm);
3842 out:
3843         if (ret)
3844                 mvmvif->phy_ctxt = NULL;
3845         return ret;
3846 }
3847 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3848                                       struct ieee80211_vif *vif,
3849                                       struct ieee80211_chanctx_conf *ctx)
3850 {
3851         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3852         int ret;
3853
3854         mutex_lock(&mvm->mutex);
3855         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3856         mutex_unlock(&mvm->mutex);
3857
3858         return ret;
3859 }
3860
3861 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3862                                            struct ieee80211_vif *vif,
3863                                            struct ieee80211_chanctx_conf *ctx,
3864                                            bool switching_chanctx)
3865 {
3866         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3867         struct ieee80211_vif *disabled_vif = NULL;
3868
3869         lockdep_assert_held(&mvm->mutex);
3870
3871         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3872
3873         switch (vif->type) {
3874         case NL80211_IFTYPE_ADHOC:
3875                 goto out;
3876         case NL80211_IFTYPE_MONITOR:
3877                 mvmvif->monitor_active = false;
3878                 mvmvif->ps_disabled = false;
3879                 iwl_mvm_rm_snif_sta(mvm, vif);
3880                 break;
3881         case NL80211_IFTYPE_AP:
3882                 /* This part is triggered only during CSA */
3883                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3884                         goto out;
3885
3886                 mvmvif->csa_countdown = false;
3887
3888                 /* Set CS bit on all the stations */
3889                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3890
3891                 /* Save blocked iface, the timeout is set on the next beacon */
3892                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3893
3894                 mvmvif->ap_ibss_active = false;
3895                 break;
3896         case NL80211_IFTYPE_STATION:
3897                 if (!switching_chanctx)
3898                         break;
3899
3900                 disabled_vif = vif;
3901
3902                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3903                 break;
3904         default:
3905                 break;
3906         }
3907
3908         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3909         iwl_mvm_binding_remove_vif(mvm, vif);
3910
3911 out:
3912         mvmvif->phy_ctxt = NULL;
3913         iwl_mvm_power_update_mac(mvm);
3914 }
3915
3916 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3917                                          struct ieee80211_vif *vif,
3918                                          struct ieee80211_chanctx_conf *ctx)
3919 {
3920         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3921
3922         mutex_lock(&mvm->mutex);
3923         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3924         mutex_unlock(&mvm->mutex);
3925 }
3926
3927 static int
3928 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3929                                 struct ieee80211_vif_chanctx_switch *vifs)
3930 {
3931         int ret;
3932
3933         mutex_lock(&mvm->mutex);
3934         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3935         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3936
3937         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3938         if (ret) {
3939                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3940                 goto out_reassign;
3941         }
3942
3943         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3944                                            true);
3945         if (ret) {
3946                 IWL_ERR(mvm,
3947                         "failed to assign new_ctx during channel switch\n");
3948                 goto out_remove;
3949         }
3950
3951         /* we don't support TDLS during DCM - can be caused by channel switch */
3952         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3953                 iwl_mvm_teardown_tdls_peers(mvm);
3954
3955         goto out;
3956
3957 out_remove:
3958         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3959
3960 out_reassign:
3961         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3962                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3963                 goto out_restart;
3964         }
3965
3966         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3967                                          true)) {
3968                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3969                 goto out_restart;
3970         }
3971
3972         goto out;
3973
3974 out_restart:
3975         /* things keep failing, better restart the hw */
3976         iwl_mvm_nic_restart(mvm, false);
3977
3978 out:
3979         mutex_unlock(&mvm->mutex);
3980
3981         return ret;
3982 }
3983
3984 static int
3985 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3986                                     struct ieee80211_vif_chanctx_switch *vifs)
3987 {
3988         int ret;
3989
3990         mutex_lock(&mvm->mutex);
3991         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3992
3993         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3994                                            true);
3995         if (ret) {
3996                 IWL_ERR(mvm,
3997                         "failed to assign new_ctx during channel switch\n");
3998                 goto out_reassign;
3999         }
4000
4001         goto out;
4002
4003 out_reassign:
4004         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4005                                          true)) {
4006                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4007                 goto out_restart;
4008         }
4009
4010         goto out;
4011
4012 out_restart:
4013         /* things keep failing, better restart the hw */
4014         iwl_mvm_nic_restart(mvm, false);
4015
4016 out:
4017         mutex_unlock(&mvm->mutex);
4018
4019         return ret;
4020 }
4021
4022 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
4023                                       struct ieee80211_vif_chanctx_switch *vifs,
4024                                       int n_vifs,
4025                                       enum ieee80211_chanctx_switch_mode mode)
4026 {
4027         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4028         int ret;
4029
4030         /* we only support a single-vif right now */
4031         if (n_vifs > 1)
4032                 return -EOPNOTSUPP;
4033
4034         switch (mode) {
4035         case CHANCTX_SWMODE_SWAP_CONTEXTS:
4036                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
4037                 break;
4038         case CHANCTX_SWMODE_REASSIGN_VIF:
4039                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4040                 break;
4041         default:
4042                 ret = -EOPNOTSUPP;
4043                 break;
4044         }
4045
4046         return ret;
4047 }
4048
4049 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
4050 {
4051         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4052
4053         return mvm->ibss_manager;
4054 }
4055
4056 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
4057                            struct ieee80211_sta *sta,
4058                            bool set)
4059 {
4060         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4061         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4062
4063         if (!mvm_sta || !mvm_sta->vif) {
4064                 IWL_ERR(mvm, "Station is not associated to a vif\n");
4065                 return -EINVAL;
4066         }
4067
4068         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
4069 }
4070
4071 #ifdef CONFIG_NL80211_TESTMODE
4072 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
4073         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
4074         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4075         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4076 };
4077
4078 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
4079                                       struct ieee80211_vif *vif,
4080                                       void *data, int len)
4081 {
4082         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
4083         int err;
4084         u32 noa_duration;
4085
4086         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
4087                         NULL);
4088         if (err)
4089                 return err;
4090
4091         if (!tb[IWL_MVM_TM_ATTR_CMD])
4092                 return -EINVAL;
4093
4094         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
4095         case IWL_MVM_TM_CMD_SET_NOA:
4096                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
4097                     !vif->bss_conf.enable_beacon ||
4098                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
4099                         return -EINVAL;
4100
4101                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
4102                 if (noa_duration >= vif->bss_conf.beacon_int)
4103                         return -EINVAL;
4104
4105                 mvm->noa_duration = noa_duration;
4106                 mvm->noa_vif = vif;
4107
4108                 return iwl_mvm_update_quotas(mvm, true, NULL);
4109         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
4110                 /* must be associated client vif - ignore authorized */
4111                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
4112                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
4113                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
4114                         return -EINVAL;
4115
4116                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
4117                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4118                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4119         }
4120
4121         return -EOPNOTSUPP;
4122 }
4123
4124 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
4125                                     struct ieee80211_vif *vif,
4126                                     void *data, int len)
4127 {
4128         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4129         int err;
4130
4131         mutex_lock(&mvm->mutex);
4132         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
4133         mutex_unlock(&mvm->mutex);
4134
4135         return err;
4136 }
4137 #endif
4138
4139 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
4140                                    struct ieee80211_vif *vif,
4141                                    struct ieee80211_channel_switch *chsw)
4142 {
4143         /* By implementing this operation, we prevent mac80211 from
4144          * starting its own channel switch timer, so that we can call
4145          * ieee80211_chswitch_done() ourselves at the right time
4146          * (which is when the absence time event starts).
4147          */
4148
4149         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
4150                            "dummy channel switch op\n");
4151 }
4152
4153 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
4154                                       struct ieee80211_vif *vif,
4155                                       struct ieee80211_channel_switch *chsw)
4156 {
4157         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4158         struct ieee80211_vif *csa_vif;
4159         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4160         u32 apply_time;
4161         int ret;
4162
4163         mutex_lock(&mvm->mutex);
4164
4165         mvmvif->csa_failed = false;
4166
4167         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4168                            chsw->chandef.center_freq1);
4169
4170         iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
4171                                        ieee80211_vif_to_wdev(vif),
4172                                        FW_DBG_TRIGGER_CHANNEL_SWITCH);
4173
4174         switch (vif->type) {
4175         case NL80211_IFTYPE_AP:
4176                 csa_vif =
4177                         rcu_dereference_protected(mvm->csa_vif,
4178                                                   lockdep_is_held(&mvm->mutex));
4179                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
4180                               "Another CSA is already in progress")) {
4181                         ret = -EBUSY;
4182                         goto out_unlock;
4183                 }
4184
4185                 /* we still didn't unblock tx. prevent new CS meanwhile */
4186                 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
4187                                               lockdep_is_held(&mvm->mutex))) {
4188                         ret = -EBUSY;
4189                         goto out_unlock;
4190                 }
4191
4192                 rcu_assign_pointer(mvm->csa_vif, vif);
4193
4194                 if (WARN_ONCE(mvmvif->csa_countdown,
4195                               "Previous CSA countdown didn't complete")) {
4196                         ret = -EBUSY;
4197                         goto out_unlock;
4198                 }
4199
4200                 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
4201
4202                 break;
4203         case NL80211_IFTYPE_STATION:
4204                 /* Schedule the time event to a bit before beacon 1,
4205                  * to make sure we're in the new channel when the
4206                  * GO/AP arrives. In case count <= 1 immediately schedule the
4207                  * TE (this might result with some packet loss or connection
4208                  * loss).
4209                  */
4210                 if (chsw->count <= 1)
4211                         apply_time = 0;
4212                 else
4213                         apply_time = chsw->device_timestamp +
4214                                 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
4215                                   IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4216
4217                 if (chsw->block_tx)
4218                         iwl_mvm_csa_client_absent(mvm, vif);
4219
4220                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4221                                             apply_time);
4222                 if (mvmvif->bf_data.bf_enabled) {
4223                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4224                         if (ret)
4225                                 goto out_unlock;
4226                 }
4227
4228                 break;
4229         default:
4230                 break;
4231         }
4232
4233         mvmvif->ps_disabled = true;
4234
4235         ret = iwl_mvm_power_update_ps(mvm);
4236         if (ret)
4237                 goto out_unlock;
4238
4239         /* we won't be on this channel any longer */
4240         iwl_mvm_teardown_tdls_peers(mvm);
4241
4242 out_unlock:
4243         mutex_unlock(&mvm->mutex);
4244
4245         return ret;
4246 }
4247
4248 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
4249                                        struct ieee80211_vif *vif)
4250 {
4251         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4252         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4253         int ret;
4254
4255         mutex_lock(&mvm->mutex);
4256
4257         if (mvmvif->csa_failed) {
4258                 mvmvif->csa_failed = false;
4259                 ret = -EIO;
4260                 goto out_unlock;
4261         }
4262
4263         if (vif->type == NL80211_IFTYPE_STATION) {
4264                 struct iwl_mvm_sta *mvmsta;
4265
4266                 mvmvif->csa_bcn_pending = false;
4267                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
4268                                                           mvmvif->ap_sta_id);
4269
4270                 if (WARN_ON(!mvmsta)) {
4271                         ret = -EIO;
4272                         goto out_unlock;
4273                 }
4274
4275                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
4276
4277                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4278
4279                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4280                 if (ret)
4281                         goto out_unlock;
4282
4283                 iwl_mvm_stop_session_protection(mvm, vif);
4284         }
4285
4286         mvmvif->ps_disabled = false;
4287
4288         ret = iwl_mvm_power_update_ps(mvm);
4289
4290 out_unlock:
4291         mutex_unlock(&mvm->mutex);
4292
4293         return ret;
4294 }
4295
4296 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4297 {
4298         int i;
4299
4300         if (!iwl_mvm_has_new_tx_api(mvm)) {
4301                 if (drop) {
4302                         mutex_lock(&mvm->mutex);
4303                         iwl_mvm_flush_tx_path(mvm,
4304                                 iwl_mvm_flushable_queues(mvm) & queues, 0);
4305                         mutex_unlock(&mvm->mutex);
4306                 } else {
4307                         iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4308                 }
4309                 return;
4310         }
4311
4312         mutex_lock(&mvm->mutex);
4313         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4314                 struct ieee80211_sta *sta;
4315
4316                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4317                                                 lockdep_is_held(&mvm->mutex));
4318                 if (IS_ERR_OR_NULL(sta))
4319                         continue;
4320
4321                 if (drop)
4322                         iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0);
4323                 else
4324                         iwl_mvm_wait_sta_queues_empty(mvm,
4325                                         iwl_mvm_sta_from_mac80211(sta));
4326         }
4327         mutex_unlock(&mvm->mutex);
4328 }
4329
4330 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4331                               struct ieee80211_vif *vif, u32 queues, bool drop)
4332 {
4333         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4334         struct iwl_mvm_vif *mvmvif;
4335         struct iwl_mvm_sta *mvmsta;
4336         struct ieee80211_sta *sta;
4337         int i;
4338         u32 msk = 0;
4339
4340         if (!vif) {
4341                 iwl_mvm_flush_no_vif(mvm, queues, drop);
4342                 return;
4343         }
4344
4345         if (vif->type != NL80211_IFTYPE_STATION)
4346                 return;
4347
4348         /* Make sure we're done with the deferred traffic before flushing */
4349         flush_work(&mvm->add_stream_wk);
4350
4351         mutex_lock(&mvm->mutex);
4352         mvmvif = iwl_mvm_vif_from_mac80211(vif);
4353
4354         /* flush the AP-station and all TDLS peers */
4355         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4356                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4357                                                 lockdep_is_held(&mvm->mutex));
4358                 if (IS_ERR_OR_NULL(sta))
4359                         continue;
4360
4361                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4362                 if (mvmsta->vif != vif)
4363                         continue;
4364
4365                 /* make sure only TDLS peers or the AP are flushed */
4366                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4367
4368                 if (drop) {
4369                         if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4370                                 IWL_ERR(mvm, "flush request fail\n");
4371                 } else {
4372                         msk |= mvmsta->tfd_queue_msk;
4373                         if (iwl_mvm_has_new_tx_api(mvm))
4374                                 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4375                 }
4376         }
4377
4378         mutex_unlock(&mvm->mutex);
4379
4380         /* this can take a while, and we may need/want other operations
4381          * to succeed while doing this, so do it without the mutex held
4382          */
4383         if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4384                 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4385 }
4386
4387 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4388                                   struct survey_info *survey)
4389 {
4390         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4391         int ret;
4392
4393         memset(survey, 0, sizeof(*survey));
4394
4395         /* only support global statistics right now */
4396         if (idx != 0)
4397                 return -ENOENT;
4398
4399         if (!fw_has_capa(&mvm->fw->ucode_capa,
4400                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4401                 return -ENOENT;
4402
4403         mutex_lock(&mvm->mutex);
4404
4405         if (iwl_mvm_firmware_running(mvm)) {
4406                 ret = iwl_mvm_request_statistics(mvm, false);
4407                 if (ret)
4408                         goto out;
4409         }
4410
4411         survey->filled = SURVEY_INFO_TIME |
4412                          SURVEY_INFO_TIME_RX |
4413                          SURVEY_INFO_TIME_TX |
4414                          SURVEY_INFO_TIME_SCAN;
4415         survey->time = mvm->accu_radio_stats.on_time_rf +
4416                        mvm->radio_stats.on_time_rf;
4417         do_div(survey->time, USEC_PER_MSEC);
4418
4419         survey->time_rx = mvm->accu_radio_stats.rx_time +
4420                           mvm->radio_stats.rx_time;
4421         do_div(survey->time_rx, USEC_PER_MSEC);
4422
4423         survey->time_tx = mvm->accu_radio_stats.tx_time +
4424                           mvm->radio_stats.tx_time;
4425         do_div(survey->time_tx, USEC_PER_MSEC);
4426
4427         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4428                             mvm->radio_stats.on_time_scan;
4429         do_div(survey->time_scan, USEC_PER_MSEC);
4430
4431         ret = 0;
4432  out:
4433         mutex_unlock(&mvm->mutex);
4434         return ret;
4435 }
4436
4437 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4438                                        struct ieee80211_vif *vif,
4439                                        struct ieee80211_sta *sta,
4440                                        struct station_info *sinfo)
4441 {
4442         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4443         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4444         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4445
4446         if (mvmsta->avg_energy) {
4447                 sinfo->signal_avg = mvmsta->avg_energy;
4448                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4449         }
4450
4451         /* if beacon filtering isn't on mac80211 does it anyway */
4452         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4453                 return;
4454
4455         if (!vif->bss_conf.assoc)
4456                 return;
4457
4458         mutex_lock(&mvm->mutex);
4459
4460         if (mvmvif->ap_sta_id != mvmsta->sta_id)
4461                 goto unlock;
4462
4463         if (iwl_mvm_request_statistics(mvm, false))
4464                 goto unlock;
4465
4466         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4467                            mvmvif->beacon_stats.accu_num_beacons;
4468         sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
4469         if (mvmvif->beacon_stats.avg_signal) {
4470                 /* firmware only reports a value after RXing a few beacons */
4471                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4472                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4473         }
4474  unlock:
4475         mutex_unlock(&mvm->mutex);
4476 }
4477
4478 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4479                                         struct ieee80211_vif *vif,
4480                                         const struct ieee80211_event *event)
4481 {
4482 #define CHECK_MLME_TRIGGER(_cnt, _fmt...)                               \
4483         do {                                                            \
4484                 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))           \
4485                         break;                                          \
4486                 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt);      \
4487         } while (0)
4488
4489         struct iwl_fw_dbg_trigger_tlv *trig;
4490         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4491
4492         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
4493                                      FW_DBG_TRIGGER_MLME);
4494         if (!trig)
4495                 return;
4496
4497         trig_mlme = (void *)trig->data;
4498
4499         if (event->u.mlme.data == ASSOC_EVENT) {
4500                 if (event->u.mlme.status == MLME_DENIED)
4501                         CHECK_MLME_TRIGGER(stop_assoc_denied,
4502                                            "DENIED ASSOC: reason %d",
4503                                             event->u.mlme.reason);
4504                 else if (event->u.mlme.status == MLME_TIMEOUT)
4505                         CHECK_MLME_TRIGGER(stop_assoc_timeout,
4506                                            "ASSOC TIMEOUT");
4507         } else if (event->u.mlme.data == AUTH_EVENT) {
4508                 if (event->u.mlme.status == MLME_DENIED)
4509                         CHECK_MLME_TRIGGER(stop_auth_denied,
4510                                            "DENIED AUTH: reason %d",
4511                                            event->u.mlme.reason);
4512                 else if (event->u.mlme.status == MLME_TIMEOUT)
4513                         CHECK_MLME_TRIGGER(stop_auth_timeout,
4514                                            "AUTH TIMEOUT");
4515         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4516                 CHECK_MLME_TRIGGER(stop_rx_deauth,
4517                                    "DEAUTH RX %d", event->u.mlme.reason);
4518         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4519                 CHECK_MLME_TRIGGER(stop_tx_deauth,
4520                                    "DEAUTH TX %d", event->u.mlme.reason);
4521         }
4522 #undef CHECK_MLME_TRIGGER
4523 }
4524
4525 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4526                                           struct ieee80211_vif *vif,
4527                                           const struct ieee80211_event *event)
4528 {
4529         struct iwl_fw_dbg_trigger_tlv *trig;
4530         struct iwl_fw_dbg_trigger_ba *ba_trig;
4531
4532         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
4533                                      FW_DBG_TRIGGER_BA);
4534         if (!trig)
4535                 return;
4536
4537         ba_trig = (void *)trig->data;
4538
4539         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4540                 return;
4541
4542         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
4543                                 "BAR received from %pM, tid %d, ssn %d",
4544                                 event->u.ba.sta->addr, event->u.ba.tid,
4545                                 event->u.ba.ssn);
4546 }
4547
4548 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4549                                        struct ieee80211_vif *vif,
4550                                        const struct ieee80211_event *event)
4551 {
4552         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4553
4554         switch (event->type) {
4555         case MLME_EVENT:
4556                 iwl_mvm_event_mlme_callback(mvm, vif, event);
4557                 break;
4558         case BAR_RX_EVENT:
4559                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4560                 break;
4561         case BA_FRAME_TIMEOUT:
4562                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
4563                                                      event->u.ba.tid);
4564                 break;
4565         default:
4566                 break;
4567         }
4568 }
4569
4570 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4571                                      struct iwl_mvm_internal_rxq_notif *notif,
4572                                      u32 size)
4573 {
4574         u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4575         int ret;
4576
4577         lockdep_assert_held(&mvm->mutex);
4578
4579         if (!iwl_mvm_has_new_rx_api(mvm))
4580                 return;
4581
4582         notif->cookie = mvm->queue_sync_cookie;
4583
4584         if (notif->sync)
4585                 atomic_set(&mvm->queue_sync_counter,
4586                            mvm->trans->num_rx_queues);
4587
4588         ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4589         if (ret) {
4590                 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4591                 goto out;
4592         }
4593
4594         if (notif->sync) {
4595                 ret = wait_event_timeout(mvm->rx_sync_waitq,
4596                                          atomic_read(&mvm->queue_sync_counter) == 0 ||
4597                                          iwl_mvm_is_radio_killed(mvm),
4598                                          HZ);
4599                 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
4600         }
4601
4602 out:
4603         atomic_set(&mvm->queue_sync_counter, 0);
4604         mvm->queue_sync_cookie++;
4605 }
4606
4607 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4608 {
4609         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4610         struct iwl_mvm_internal_rxq_notif data = {
4611                 .type = IWL_MVM_RXQ_EMPTY,
4612                 .sync = 1,
4613         };
4614
4615         mutex_lock(&mvm->mutex);
4616         iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4617         mutex_unlock(&mvm->mutex);
4618 }
4619
4620 const struct ieee80211_ops iwl_mvm_hw_ops = {
4621         .tx = iwl_mvm_mac_tx,
4622         .ampdu_action = iwl_mvm_mac_ampdu_action,
4623         .start = iwl_mvm_mac_start,
4624         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4625         .stop = iwl_mvm_mac_stop,
4626         .add_interface = iwl_mvm_mac_add_interface,
4627         .remove_interface = iwl_mvm_mac_remove_interface,
4628         .config = iwl_mvm_mac_config,
4629         .prepare_multicast = iwl_mvm_prepare_multicast,
4630         .configure_filter = iwl_mvm_configure_filter,
4631         .config_iface_filter = iwl_mvm_config_iface_filter,
4632         .bss_info_changed = iwl_mvm_bss_info_changed,
4633         .hw_scan = iwl_mvm_mac_hw_scan,
4634         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4635         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4636         .sta_state = iwl_mvm_mac_sta_state,
4637         .sta_notify = iwl_mvm_mac_sta_notify,
4638         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4639         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4640         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4641         .sta_rc_update = iwl_mvm_sta_rc_update,
4642         .conf_tx = iwl_mvm_mac_conf_tx,
4643         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4644         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4645         .flush = iwl_mvm_mac_flush,
4646         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4647         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4648         .set_key = iwl_mvm_mac_set_key,
4649         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4650         .remain_on_channel = iwl_mvm_roc,
4651         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4652         .add_chanctx = iwl_mvm_add_chanctx,
4653         .remove_chanctx = iwl_mvm_remove_chanctx,
4654         .change_chanctx = iwl_mvm_change_chanctx,
4655         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4656         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4657         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4658
4659         .start_ap = iwl_mvm_start_ap_ibss,
4660         .stop_ap = iwl_mvm_stop_ap_ibss,
4661         .join_ibss = iwl_mvm_start_ap_ibss,
4662         .leave_ibss = iwl_mvm_stop_ap_ibss,
4663
4664         .tx_last_beacon = iwl_mvm_tx_last_beacon,
4665
4666         .set_tim = iwl_mvm_set_tim,
4667
4668         .channel_switch = iwl_mvm_channel_switch,
4669         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4670         .post_channel_switch = iwl_mvm_post_channel_switch,
4671
4672         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4673         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4674         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4675
4676         .event_callback = iwl_mvm_mac_event_callback,
4677
4678         .sync_rx_queues = iwl_mvm_sync_rx_queues,
4679
4680         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4681
4682 #ifdef CONFIG_PM_SLEEP
4683         /* look at d3.c */
4684         .suspend = iwl_mvm_suspend,
4685         .resume = iwl_mvm_resume,
4686         .set_wakeup = iwl_mvm_set_wakeup,
4687         .set_rekey_data = iwl_mvm_set_rekey_data,
4688 #if IS_ENABLED(CONFIG_IPV6)
4689         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4690 #endif
4691         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4692 #endif
4693         .get_survey = iwl_mvm_mac_get_survey,
4694         .sta_statistics = iwl_mvm_mac_sta_statistics,
4695 #ifdef CONFIG_IWLWIFI_DEBUGFS
4696         .sta_add_debugfs = iwl_mvm_sta_add_debugfs,
4697 #endif
4698 };