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.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
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  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
  21  *
  22  * The full GNU General Public License is included in this distribution
  23  * in the file called COPYING.
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  28  *
  29  * BSD LICENSE
  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
  39  * are met:
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  42  *    notice, this list of conditions and the following disclaimer.
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  44  *    notice, this list of conditions and the following disclaimer in
  45  *    the documentation and/or other materials provided with the
  46  *    distribution.
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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                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 306
 307         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 308                                       __le32_to_cpu(resp->n_channels),
 309                                       resp->channels,
 310                                       __le16_to_cpu(resp->mcc),
 311                                       __le16_to_cpu(resp->geo_info));
 312         /* Store the return source id */
 313         src_id = resp->source_id;
 314         kfree(resp);
 315         if (IS_ERR_OR_NULL(regd)) {
 316                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 317                               PTR_ERR_OR_ZERO(regd));
 318                 goto out;
 319         }
 320
 321         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 322                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 323         mvm->lar_regdom_set = true;
 324         mvm->mcc_src = src_id;
 325
 326 out:
 327         return regd;
 328 }
 329
 330 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 331 {
 332         bool changed;
 333         struct ieee80211_regdomain *regd;
 334
 335         if (!iwl_mvm_is_lar_supported(mvm))
 336                 return;
 337
 338         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 339         if (!IS_ERR_OR_NULL(regd)) {
 340                 /* only update the regulatory core if changed */
 341                 if (changed)
 342                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 343
 344                 kfree(regd);
 345         }
 346 }
 347
 348 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 349                                                           bool *changed)
 350 {
 351         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 352                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 353                                      MCC_SOURCE_GET_CURRENT :
 354                                      MCC_SOURCE_OLD_FW, changed);
 355 }
 356
 357 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 358 {
 359         enum iwl_mcc_source used_src;
 360         struct ieee80211_regdomain *regd;
 361         int ret;
 362         bool changed;
 363         const struct ieee80211_regdomain *r =
 364                         rtnl_dereference(mvm->hw->wiphy->regd);
 365
 366         if (!r)
 367                 return -ENOENT;
 368
 369         /* save the last source in case we overwrite it below */
 370         used_src = mvm->mcc_src;
 371         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 372                 /* Notify the firmware we support wifi location updates */
 373                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 374                 if (!IS_ERR_OR_NULL(regd))
 375                         kfree(regd);
 376         }
 377
 378         /* Now set our last stored MCC and source */
 379         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 380                                      &changed);
 381         if (IS_ERR_OR_NULL(regd))
 382                 return -EIO;
 383
 384         /* update cfg80211 if the regdomain was changed */
 385         if (changed)
 386                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 387         else
 388                 ret = 0;
 389
 390         kfree(regd);
 391         return ret;
 392 }
 393
 394 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 395 {
 396         struct ieee80211_hw *hw = mvm->hw;
 397         int num_mac, ret, i;
 398         static const u32 mvm_ciphers[] = {
 399                 WLAN_CIPHER_SUITE_WEP40,
 400                 WLAN_CIPHER_SUITE_WEP104,
 401                 WLAN_CIPHER_SUITE_TKIP,
 402                 WLAN_CIPHER_SUITE_CCMP,
 403         };
 404
 405         /* Tell mac80211 our characteristics */
 406         ieee80211_hw_set(hw, SIGNAL_DBM);
 407         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 408         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 409         ieee80211_hw_set(hw, QUEUE_CONTROL);
 410         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 411         ieee80211_hw_set(hw, SUPPORTS_PS);
 412         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 413         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 414         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 415         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 416         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 417         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 418         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 419         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 420         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 421         ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
 422
 423         if (iwl_mvm_has_tlc_offload(mvm)) {
 424                 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
 425                 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
 426         }
 427
 428         if (iwl_mvm_has_new_rx_api(mvm))
 429                 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 430
 431         if (fw_has_capa(&mvm->fw->ucode_capa,
 432                         IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
 433                 ieee80211_hw_set(hw, AP_LINK_PS);
 434         } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
 435                 /*
 436                  * we absolutely need this for the new TX API since that comes
 437                  * with many more queues than the current code can deal with
 438                  * for station powersave
 439                  */
 440                 return -EINVAL;
 441         }
 442
 443         if (mvm->trans->num_rx_queues > 1)
 444                 ieee80211_hw_set(hw, USES_RSS);
 445
 446         if (mvm->trans->max_skb_frags)
 447                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 448
 449         hw->queues = IEEE80211_MAX_QUEUES;
 450         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 451         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 452                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 453         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 454                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 455
 456         hw->radiotap_timestamp.units_pos =
 457                 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
 458                 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
 459         /* this is the case for CCK frames, it's better (only 8) for OFDM */
 460         hw->radiotap_timestamp.accuracy = 22;
 461
 462         if (!iwl_mvm_has_tlc_offload(mvm))
 463                 hw->rate_control_algorithm = RS_NAME;
 464
 465         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 466         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 467
 468         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
 469         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 470         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 471         hw->wiphy->cipher_suites = mvm->ciphers;
 472
 473         if (iwl_mvm_has_new_rx_api(mvm)) {
 474                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 475                         WLAN_CIPHER_SUITE_GCMP;
 476                 hw->wiphy->n_cipher_suites++;
 477                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 478                         WLAN_CIPHER_SUITE_GCMP_256;
 479                 hw->wiphy->n_cipher_suites++;
 480         }
 481
 482         /* Enable 11w if software crypto is not enabled (as the
 483          * firmware will interpret some mgmt packets, so enabling it
 484          * with software crypto isn't safe).
 485          */
 486         if (!iwlwifi_mod_params.swcrypto) {
 487                 ieee80211_hw_set(hw, MFP_CAPABLE);
 488                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 489                         WLAN_CIPHER_SUITE_AES_CMAC;
 490                 hw->wiphy->n_cipher_suites++;
 491                 if (iwl_mvm_has_new_rx_api(mvm)) {
 492                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 493                                 WLAN_CIPHER_SUITE_BIP_GMAC_128;
 494                         hw->wiphy->n_cipher_suites++;
 495                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 496                                 WLAN_CIPHER_SUITE_BIP_GMAC_256;
 497                         hw->wiphy->n_cipher_suites++;
 498                 }
 499         }
 500
 501         /* currently FW API supports only one optional cipher scheme */
 502         if (mvm->fw->cs[0].cipher) {
 503                 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
 504                 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
 505
 506                 mvm->hw->n_cipher_schemes = 1;
 507
 508                 cs->cipher = le32_to_cpu(fwcs->cipher);
 509                 cs->iftype = BIT(NL80211_IFTYPE_STATION);
 510                 cs->hdr_len = fwcs->hdr_len;
 511                 cs->pn_len = fwcs->pn_len;
 512                 cs->pn_off = fwcs->pn_off;
 513                 cs->key_idx_off = fwcs->key_idx_off;
 514                 cs->key_idx_mask = fwcs->key_idx_mask;
 515                 cs->key_idx_shift = fwcs->key_idx_shift;
 516                 cs->mic_len = fwcs->mic_len;
 517
 518                 mvm->hw->cipher_schemes = mvm->cs;
 519                 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
 520                 hw->wiphy->n_cipher_suites++;
 521         }
 522
 523         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 524         hw->wiphy->features |=
 525                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 526                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 527                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 528
 529         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 530         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 531         hw->chanctx_data_size = sizeof(u16);
 532
 533         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 534                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 535                 BIT(NL80211_IFTYPE_AP) |
 536                 BIT(NL80211_IFTYPE_P2P_GO) |
 537                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 538                 BIT(NL80211_IFTYPE_ADHOC);
 539
 540         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 541         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 542         if (iwl_mvm_is_lar_supported(mvm))
 543                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 544         else
 545                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 546                                                REGULATORY_DISABLE_BEACON_HINTS;
 547
 548         hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 549         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 550
 551         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 552         hw->wiphy->n_iface_combinations =
 553                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 554
 555         hw->wiphy->max_remain_on_channel_duration = 10000;
 556         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 557
 558         /* Extract MAC address */
 559         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 560         hw->wiphy->addresses = mvm->addresses;
 561         hw->wiphy->n_addresses = 1;
 562
 563         /* Extract additional MAC addresses if available */
 564         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 565                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 566
 567         for (i = 1; i < num_mac; i++) {
 568                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 569                        ETH_ALEN);
 570                 mvm->addresses[i].addr[5]++;
 571                 hw->wiphy->n_addresses++;
 572         }
 573
 574         iwl_mvm_reset_phy_ctxts(mvm);
 575
 576         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 577
 578         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 579
 580         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 581         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 582                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 583
 584         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 585                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 586         else
 587                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 588
 589         if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
 590                 hw->wiphy->bands[NL80211_BAND_2GHZ] =
 591                         &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
 592         if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
 593                 hw->wiphy->bands[NL80211_BAND_5GHZ] =
 594                         &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
 595
 596                 if (fw_has_capa(&mvm->fw->ucode_capa,
 597                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 598                     fw_has_api(&mvm->fw->ucode_capa,
 599                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 600                         hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
 601                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 602         }
 603
 604         hw->wiphy->hw_version = mvm->trans->hw_id;
 605
 606         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 607                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 608         else
 609                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 610
 611         hw->wiphy->max_sched_scan_reqs = 1;
 612         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 613         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 614         /* we create the 802.11 header and zero length SSID IE. */
 615         hw->wiphy->max_sched_scan_ie_len =
 616                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 617         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 618         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 619
 620         /*
 621          * the firmware uses u8 for num of iterations, but 0xff is saved for
 622          * infinite loop, so the maximum number of iterations is actually 254.
 623          */
 624         hw->wiphy->max_sched_scan_plan_iterations = 254;
 625
 626         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 627                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 628                                NL80211_FEATURE_P2P_GO_OPPPS |
 629                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 630                                NL80211_FEATURE_DYNAMIC_SMPS |
 631                                NL80211_FEATURE_STATIC_SMPS |
 632                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 633
 634         if (fw_has_capa(&mvm->fw->ucode_capa,
 635                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 636                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 637         if (fw_has_capa(&mvm->fw->ucode_capa,
 638                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 639                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 640
 641         if (fw_has_capa(&mvm->fw->ucode_capa,
 642                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 643                 hw->wiphy->features |=
 644                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 645
 646         if (fw_has_capa(&mvm->fw->ucode_capa,
 647                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 648                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 649
 650         if (fw_has_api(&mvm->fw->ucode_capa,
 651                        IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
 652                 wiphy_ext_feature_set(hw->wiphy,
 653                                       NL80211_EXT_FEATURE_SCAN_START_TIME);
 654                 wiphy_ext_feature_set(hw->wiphy,
 655                                       NL80211_EXT_FEATURE_BSS_PARENT_TSF);
 656                 wiphy_ext_feature_set(hw->wiphy,
 657                                       NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 658         }
 659
 660         if (iwl_mvm_is_oce_supported(mvm)) {
 661                 wiphy_ext_feature_set(hw->wiphy,
 662                         NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
 663                 wiphy_ext_feature_set(hw->wiphy,
 664                         NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
 665                 wiphy_ext_feature_set(hw->wiphy,
 666                         NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
 667                 wiphy_ext_feature_set(hw->wiphy,
 668                         NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
 669         }
 670
 671         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 672
 673 #ifdef CONFIG_PM_SLEEP
 674         if (iwl_mvm_is_d0i3_supported(mvm) &&
 675             device_can_wakeup(mvm->trans->dev)) {
 676                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 677                 hw->wiphy->wowlan = &mvm->wowlan;
 678         }
 679
 680         if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
 681             mvm->trans->ops->d3_suspend &&
 682             mvm->trans->ops->d3_resume &&
 683             device_can_wakeup(mvm->trans->dev)) {
 684                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 685                                      WIPHY_WOWLAN_DISCONNECT |
 686                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 687                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 688                                      WIPHY_WOWLAN_NET_DETECT;
 689                 if (!iwlwifi_mod_params.swcrypto)
 690                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 691                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 692                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 693
 694                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 695                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 696                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 697                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 698                 hw->wiphy->wowlan = &mvm->wowlan;
 699         }
 700 #endif
 701
 702 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 703         /* assign default bcast filtering configuration */
 704         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 705 #endif
 706
 707         ret = iwl_mvm_leds_init(mvm);
 708         if (ret)
 709                 return ret;
 710
 711         if (fw_has_capa(&mvm->fw->ucode_capa,
 712                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 713                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 714                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 715                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 716         }
 717
 718         if (fw_has_capa(&mvm->fw->ucode_capa,
 719                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 720                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 721                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 722         }
 723
 724         hw->netdev_features |= mvm->cfg->features;
 725         if (!iwl_mvm_is_csum_supported(mvm)) {
 726                 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
 727                                          NETIF_F_RXCSUM);
 728                 /* We may support SW TX CSUM */
 729                 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 730                         hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
 731         }
 732
 733         ret = ieee80211_register_hw(mvm->hw);
 734         if (ret)
 735                 iwl_mvm_leds_exit(mvm);
 736         mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 737
 738         if (mvm->cfg->vht_mu_mimo_supported)
 739                 wiphy_ext_feature_set(hw->wiphy,
 740                                       NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
 741
 742         return ret;
 743 }
 744
 745 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 746                              struct ieee80211_sta *sta,
 747                              struct sk_buff *skb)
 748 {
 749         struct iwl_mvm_sta *mvmsta;
 750         bool defer = false;
 751
 752         /*
 753          * double check the IN_D0I3 flag both before and after
 754          * taking the spinlock, in order to prevent taking
 755          * the spinlock when not needed.
 756          */
 757         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 758                 return false;
 759
 760         spin_lock(&mvm->d0i3_tx_lock);
 761         /*
 762          * testing the flag again ensures the skb dequeue
 763          * loop (on d0i3 exit) hasn't run yet.
 764          */
 765         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 766                 goto out;
 767
 768         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 769         if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
 770             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 771                 goto out;
 772
 773         __skb_queue_tail(&mvm->d0i3_tx, skb);
 774         ieee80211_stop_queues(mvm->hw);
 775
 776         /* trigger wakeup */
 777         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 778         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 779
 780         defer = true;
 781 out:
 782         spin_unlock(&mvm->d0i3_tx_lock);
 783         return defer;
 784 }
 785
 786 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 787                            struct ieee80211_tx_control *control,
 788                            struct sk_buff *skb)
 789 {
 790         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 791         struct ieee80211_sta *sta = control->sta;
 792         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 793         struct ieee80211_hdr *hdr = (void *)skb->data;
 794
 795         if (iwl_mvm_is_radio_killed(mvm)) {
 796                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 797                 goto drop;
 798         }
 799
 800         if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 801             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 802             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 803                 goto drop;
 804
 805         /* treat non-bufferable MMPDUs on AP interfaces as broadcast */
 806         if ((info->control.vif->type == NL80211_IFTYPE_AP ||
 807              info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
 808             ieee80211_is_mgmt(hdr->frame_control) &&
 809             !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
 810                 sta = NULL;
 811
 812         if (sta) {
 813                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 814                         return;
 815                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 816                         goto drop;
 817                 return;
 818         }
 819
 820         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 821                 goto drop;
 822         return;
 823  drop:
 824         ieee80211_free_txskb(hw, skb);
 825 }
 826
 827 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 828 {
 829         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 830                 return false;
 831         return true;
 832 }
 833
 834 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 835 {
 836         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 837                 return false;
 838         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 839                 return true;
 840
 841         /* enabled by default */
 842         return true;
 843 }
 844
 845 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)           \
 846         do {                                                            \
 847                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))                \
 848                         break;                                          \
 849                 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt);    \
 850         } while (0)
 851
 852 static void
 853 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 854                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 855                             enum ieee80211_ampdu_mlme_action action)
 856 {
 857         struct iwl_fw_dbg_trigger_tlv *trig;
 858         struct iwl_fw_dbg_trigger_ba *ba_trig;
 859
 860         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
 861                                      FW_DBG_TRIGGER_BA);
 862         if (!trig)
 863                 return;
 864
 865         ba_trig = (void *)trig->data;
 866
 867         switch (action) {
 868         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 869                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 870                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 871
 872                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 873                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 874                                  sta->addr, tid, tid_data->ssn);
 875                 break;
 876                 }
 877         case IEEE80211_AMPDU_TX_STOP_CONT:
 878                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 879                                  "TX AGG STOP: MAC %pM tid %d\n",
 880                                  sta->addr, tid);
 881                 break;
 882         case IEEE80211_AMPDU_RX_START:
 883                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 884                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 885                                  sta->addr, tid, rx_ba_ssn);
 886                 break;
 887         case IEEE80211_AMPDU_RX_STOP:
 888                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 889                                  "RX AGG STOP: MAC %pM tid %d\n",
 890                                  sta->addr, tid);
 891                 break;
 892         default:
 893                 break;
 894         }
 895 }
 896
 897 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 898                                     struct ieee80211_vif *vif,
 899                                     struct ieee80211_ampdu_params *params)
 900 {
 901         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 902         int ret;
 903         bool tx_agg_ref = false;
 904         struct ieee80211_sta *sta = params->sta;
 905         enum ieee80211_ampdu_mlme_action action = params->action;
 906         u16 tid = params->tid;
 907         u16 *ssn = &params->ssn;
 908         u16 buf_size = params->buf_size;
 909         bool amsdu = params->amsdu;
 910         u16 timeout = params->timeout;
 911
 912         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 913                      sta->addr, tid, action);
 914
 915         if (!(mvm->nvm_data->sku_cap_11n_enable))
 916                 return -EACCES;
 917
 918         /* return from D0i3 before starting a new Tx aggregation */
 919         switch (action) {
 920         case IEEE80211_AMPDU_TX_START:
 921         case IEEE80211_AMPDU_TX_STOP_CONT:
 922         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 923         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 924         case IEEE80211_AMPDU_TX_OPERATIONAL:
 925                 /*
 926                  * for tx start, wait synchronously until D0i3 exit to
 927                  * get the correct sequence number for the tid.
 928                  * additionally, some other ampdu actions use direct
 929                  * target access, which is not handled automatically
 930                  * by the trans layer (unlike commands), so wait for
 931                  * d0i3 exit in these cases as well.
 932                  */
 933                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 934                 if (ret)
 935                         return ret;
 936
 937                 tx_agg_ref = true;
 938                 break;
 939         default:
 940                 break;
 941         }
 942
 943         mutex_lock(&mvm->mutex);
 944
 945         switch (action) {
 946         case IEEE80211_AMPDU_RX_START:
 947                 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
 948                                 iwl_mvm_sta_from_mac80211(sta)->sta_id) {
 949                         struct iwl_mvm_vif *mvmvif;
 950                         u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
 951                         struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
 952
 953                         mdata->opened_rx_ba_sessions = true;
 954                         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 955                         cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
 956                 }
 957                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 958                         ret = -EINVAL;
 959                         break;
 960                 }
 961                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
 962                                          timeout);
 963                 break;
 964         case IEEE80211_AMPDU_RX_STOP:
 965                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
 966                                          timeout);
 967                 break;
 968         case IEEE80211_AMPDU_TX_START:
 969                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 970                         ret = -EINVAL;
 971                         break;
 972                 }
 973                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 974                 break;
 975         case IEEE80211_AMPDU_TX_STOP_CONT:
 976                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 977                 break;
 978         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 979         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 980                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 981                 break;
 982         case IEEE80211_AMPDU_TX_OPERATIONAL:
 983                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 984                                               buf_size, amsdu);
 985                 break;
 986         default:
 987                 WARN_ON_ONCE(1);
 988                 ret = -EINVAL;
 989                 break;
 990         }
 991
 992         if (!ret) {
 993                 u16 rx_ba_ssn = 0;
 994
 995                 if (action == IEEE80211_AMPDU_RX_START)
 996                         rx_ba_ssn = *ssn;
 997
 998                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 999                                             rx_ba_ssn, action);
1000         }
1001         mutex_unlock(&mvm->mutex);
1002
1003         /*
1004          * If the tid is marked as started, we won't use it for offloaded
1005          * traffic on the next D0i3 entry. It's safe to unref.
1006          */
1007         if (tx_agg_ref)
1008                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1009
1010         return ret;
1011 }
1012
1013 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1014                                      struct ieee80211_vif *vif)
1015 {
1016         struct iwl_mvm *mvm = data;
1017         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1018
1019         mvmvif->uploaded = false;
1020         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1021
1022         spin_lock_bh(&mvm->time_event_lock);
1023         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1024         spin_unlock_bh(&mvm->time_event_lock);
1025
1026         mvmvif->phy_ctxt = NULL;
1027         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1028         memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
1029 }
1030
1031 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1032 {
1033         /* clear the D3 reconfig, we only need it to avoid dumping a
1034          * firmware coredump on reconfiguration, we shouldn't do that
1035          * on D3->D0 transition
1036          */
1037         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1038                 mvm->fwrt.dump.desc = &iwl_dump_desc_assert;
1039                 iwl_fw_error_dump(&mvm->fwrt);
1040         }
1041
1042         /* cleanup all stale references (scan, roc), but keep the
1043          * ucode_down ref until reconfig is complete
1044          */
1045         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1046
1047         iwl_mvm_stop_device(mvm);
1048
1049         mvm->scan_status = 0;
1050         mvm->ps_disabled = false;
1051         mvm->calibrating = false;
1052
1053         /* just in case one was running */
1054         iwl_mvm_cleanup_roc_te(mvm);
1055         ieee80211_remain_on_channel_expired(mvm->hw);
1056
1057         /*
1058          * cleanup all interfaces, even inactive ones, as some might have
1059          * gone down during the HW restart
1060          */
1061         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1062
1063         mvm->p2p_device_vif = NULL;
1064         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1065
1066         iwl_mvm_reset_phy_ctxts(mvm);
1067         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1068         memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1069         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1070         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1071
1072         ieee80211_wake_queues(mvm->hw);
1073
1074         /* clear any stale d0i3 state */
1075         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1076
1077         mvm->vif_count = 0;
1078         mvm->rx_ba_sessions = 0;
1079         mvm->fwrt.dump.conf = FW_DBG_INVALID;
1080         mvm->monitor_on = false;
1081
1082         /* keep statistics ticking */
1083         iwl_mvm_accu_radio_stats(mvm);
1084 }
1085
1086 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1087 {
1088         int ret;
1089
1090         lockdep_assert_held(&mvm->mutex);
1091
1092         if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1093                 /*
1094                  * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1095                  * so later code will - from now on - see that we're doing it.
1096                  */
1097                 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1098                 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1099                 /* Clean up some internal and mac80211 state on restart */
1100                 iwl_mvm_restart_cleanup(mvm);
1101         } else {
1102                 /* Hold the reference to prevent runtime suspend while
1103                  * the start procedure runs.  It's a bit confusing
1104                  * that the UCODE_DOWN reference is taken, but it just
1105                  * means "UCODE is not UP yet". ( TODO: rename this
1106                  * reference).
1107                  */
1108                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1109         }
1110         ret = iwl_mvm_up(mvm);
1111
1112         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1113                 /* Something went wrong - we need to finish some cleanup
1114                  * that normally iwl_mvm_mac_restart_complete() below
1115                  * would do.
1116                  */
1117                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1118 #ifdef CONFIG_PM
1119                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1120 #endif
1121         }
1122
1123         return ret;
1124 }
1125
1126 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1127 {
1128         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1129         int ret;
1130
1131         /* Some hw restart cleanups must not hold the mutex */
1132         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1133                 /*
1134                  * Make sure we are out of d0i3. This is needed
1135                  * to make sure the reference accounting is correct
1136                  * (and there is no stale d0i3_exit_work).
1137                  */
1138                 wait_event_timeout(mvm->d0i3_exit_waitq,
1139                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1140                                              &mvm->status),
1141                                    HZ);
1142         }
1143
1144         mutex_lock(&mvm->mutex);
1145         ret = __iwl_mvm_mac_start(mvm);
1146         mutex_unlock(&mvm->mutex);
1147
1148         return ret;
1149 }
1150
1151 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1152 {
1153         int ret;
1154
1155         mutex_lock(&mvm->mutex);
1156
1157         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1158 #ifdef CONFIG_PM
1159         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1160 #endif
1161         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1162         if (ret)
1163                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1164                         ret);
1165
1166         /* allow transport/FW low power modes */
1167         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1168
1169         /*
1170          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1171          * of packets the FW sent out, so we must reconnect.
1172          */
1173         iwl_mvm_teardown_tdls_peers(mvm);
1174
1175         mutex_unlock(&mvm->mutex);
1176 }
1177
1178 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1179 {
1180         if (iwl_mvm_is_d0i3_supported(mvm) &&
1181             iwl_mvm_enter_d0i3_on_suspend(mvm))
1182                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1183                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1184                                                         &mvm->status),
1185                                               HZ),
1186                           "D0i3 exit on resume timed out\n");
1187 }
1188
1189 static void
1190 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1191                               enum ieee80211_reconfig_type reconfig_type)
1192 {
1193         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1194
1195         switch (reconfig_type) {
1196         case IEEE80211_RECONFIG_TYPE_RESTART:
1197                 iwl_mvm_restart_complete(mvm);
1198                 break;
1199         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1200                 iwl_mvm_resume_complete(mvm);
1201                 break;
1202         }
1203 }
1204
1205 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1206 {
1207         lockdep_assert_held(&mvm->mutex);
1208
1209         /* firmware counters are obviously reset now, but we shouldn't
1210          * partially track so also clear the fw_reset_accu counters.
1211          */
1212         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1213
1214         /* async_handlers_wk is now blocked */
1215
1216         /*
1217          * The work item could be running or queued if the
1218          * ROC time event stops just as we get here.
1219          */
1220         flush_work(&mvm->roc_done_wk);
1221
1222         iwl_mvm_stop_device(mvm);
1223
1224         iwl_mvm_async_handlers_purge(mvm);
1225         /* async_handlers_list is empty and will stay empty: HW is stopped */
1226
1227         /* the fw is stopped, the aux sta is dead: clean up driver state */
1228         iwl_mvm_del_aux_sta(mvm);
1229
1230         /*
1231          * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
1232          * hw (as restart_complete() won't be called in this case) and mac80211
1233          * won't execute the restart.
1234          * But make sure to cleanup interfaces that have gone down before/during
1235          * HW restart was requested.
1236          */
1237         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1238             test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1239                                &mvm->status))
1240                 ieee80211_iterate_interfaces(mvm->hw, 0,
1241                                              iwl_mvm_cleanup_iterator, mvm);
1242
1243         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1244          * make sure there's nothing left there and warn if any is found.
1245          */
1246         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1247                 int i;
1248
1249                 for (i = 0; i < mvm->max_scans; i++) {
1250                         if (WARN_ONCE(mvm->scan_uid_status[i],
1251                                       "UMAC scan UID %d status was not cleaned\n",
1252                                       i))
1253                                 mvm->scan_uid_status[i] = 0;
1254                 }
1255         }
1256 }
1257
1258 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1259 {
1260         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1261
1262         flush_work(&mvm->d0i3_exit_work);
1263         flush_work(&mvm->async_handlers_wk);
1264         flush_work(&mvm->add_stream_wk);
1265
1266         /*
1267          * Lock and clear the firmware running bit here already, so that
1268          * new commands coming in elsewhere, e.g. from debugfs, will not
1269          * be able to proceed. This is important here because one of those
1270          * debugfs files causes the firmware dump to be triggered, and if we
1271          * don't stop debugfs accesses before canceling that it could be
1272          * retriggered after we flush it but before we've cleared the bit.
1273          */
1274         clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1275
1276         iwl_fw_cancel_dump(&mvm->fwrt);
1277         cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1278         cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1279         iwl_fw_free_dump_desc(&mvm->fwrt);
1280
1281         mutex_lock(&mvm->mutex);
1282         __iwl_mvm_mac_stop(mvm);
1283         mutex_unlock(&mvm->mutex);
1284
1285         /*
1286          * The worker might have been waiting for the mutex, let it run and
1287          * discover that its list is now empty.
1288          */
1289         cancel_work_sync(&mvm->async_handlers_wk);
1290 }
1291
1292 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1293 {
1294         u16 i;
1295
1296         lockdep_assert_held(&mvm->mutex);
1297
1298         for (i = 0; i < NUM_PHY_CTX; i++)
1299                 if (!mvm->phy_ctxts[i].ref)
1300                         return &mvm->phy_ctxts[i];
1301
1302         IWL_ERR(mvm, "No available PHY context\n");
1303         return NULL;
1304 }
1305
1306 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1307                                 s16 tx_power)
1308 {
1309         int len;
1310         union {
1311                 struct iwl_dev_tx_power_cmd v5;
1312                 struct iwl_dev_tx_power_cmd_v4 v4;
1313         } cmd = {
1314                 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1315                 .v5.v3.mac_context_id =
1316                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1317                 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1318         };
1319
1320         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1321                 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1322
1323         if (fw_has_api(&mvm->fw->ucode_capa,
1324                        IWL_UCODE_TLV_API_REDUCE_TX_POWER))
1325                 len = sizeof(cmd.v5);
1326         else if (fw_has_capa(&mvm->fw->ucode_capa,
1327                              IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1328                 len = sizeof(cmd.v4);
1329         else
1330                 len = sizeof(cmd.v4.v3);
1331
1332         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1333 }
1334
1335 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1336                                      struct ieee80211_vif *vif)
1337 {
1338         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1339         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1340         int ret;
1341
1342         mvmvif->mvm = mvm;
1343         RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1344
1345         /*
1346          * make sure D0i3 exit is completed, otherwise a target access
1347          * during tx queue configuration could be done when still in
1348          * D0i3 state.
1349          */
1350         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1351         if (ret)
1352                 return ret;
1353
1354         /*
1355          * Not much to do here. The stack will not allow interface
1356          * types or combinations that we didn't advertise, so we
1357          * don't really have to check the types.
1358          */
1359
1360         mutex_lock(&mvm->mutex);
1361
1362         /* make sure that beacon statistics don't go backwards with FW reset */
1363         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1364                 mvmvif->beacon_stats.accu_num_beacons +=
1365                         mvmvif->beacon_stats.num_beacons;
1366
1367         /* Allocate resources for the MAC context, and add it to the fw  */
1368         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1369         if (ret)
1370                 goto out_unlock;
1371
1372         /* Counting number of interfaces is needed for legacy PM */
1373         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1374                 mvm->vif_count++;
1375
1376         /*
1377          * The AP binding flow can be done only after the beacon
1378          * template is configured (which happens only in the mac80211
1379          * start_ap() flow), and adding the broadcast station can happen
1380          * only after the binding.
1381          * In addition, since modifying the MAC before adding a bcast
1382          * station is not allowed by the FW, delay the adding of MAC context to
1383          * the point where we can also add the bcast station.
1384          * In short: there's not much we can do at this point, other than
1385          * allocating resources :)
1386          */
1387         if (vif->type == NL80211_IFTYPE_AP ||
1388             vif->type == NL80211_IFTYPE_ADHOC) {
1389                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1390                 if (ret) {
1391                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1392                         goto out_release;
1393                 }
1394
1395                 /*
1396                  * Only queue for this station is the mcast queue,
1397                  * which shouldn't be in TFD mask anyway
1398                  */
1399                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1400                                                0, vif->type,
1401                                                IWL_STA_MULTICAST);
1402                 if (ret)
1403                         goto out_release;
1404
1405                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1406                 goto out_unlock;
1407         }
1408
1409         mvmvif->features |= hw->netdev_features;
1410
1411         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1412         if (ret)
1413                 goto out_release;
1414
1415         ret = iwl_mvm_power_update_mac(mvm);
1416         if (ret)
1417                 goto out_remove_mac;
1418
1419         /* beacon filtering */
1420         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1421         if (ret)
1422                 goto out_remove_mac;
1423
1424         if (!mvm->bf_allowed_vif &&
1425             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1426                 mvm->bf_allowed_vif = mvmvif;
1427                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1428                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1429         }
1430
1431         /*
1432          * P2P_DEVICE interface does not have a channel context assigned to it,
1433          * so a dedicated PHY context is allocated to it and the corresponding
1434          * MAC context is bound to it at this stage.
1435          */
1436         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1437
1438                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1439                 if (!mvmvif->phy_ctxt) {
1440                         ret = -ENOSPC;
1441                         goto out_free_bf;
1442                 }
1443
1444                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1445                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1446                 if (ret)
1447                         goto out_unref_phy;
1448
1449                 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1450                 if (ret)
1451                         goto out_unbind;
1452
1453                 /* Save a pointer to p2p device vif, so it can later be used to
1454                  * update the p2p device MAC when a GO is started/stopped */
1455                 mvm->p2p_device_vif = vif;
1456         }
1457
1458         iwl_mvm_tcm_add_vif(mvm, vif);
1459
1460         if (vif->type == NL80211_IFTYPE_MONITOR)
1461                 mvm->monitor_on = true;
1462
1463         iwl_mvm_vif_dbgfs_register(mvm, vif);
1464         goto out_unlock;
1465
1466  out_unbind:
1467         iwl_mvm_binding_remove_vif(mvm, vif);
1468  out_unref_phy:
1469         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1470  out_free_bf:
1471         if (mvm->bf_allowed_vif == mvmvif) {
1472                 mvm->bf_allowed_vif = NULL;
1473                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1474                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1475         }
1476  out_remove_mac:
1477         mvmvif->phy_ctxt = NULL;
1478         iwl_mvm_mac_ctxt_remove(mvm, vif);
1479  out_release:
1480         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1481                 mvm->vif_count--;
1482  out_unlock:
1483         mutex_unlock(&mvm->mutex);
1484
1485         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1486
1487         return ret;
1488 }
1489
1490 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1491                                         struct ieee80211_vif *vif)
1492 {
1493         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1494                 /*
1495                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1496                  * We assume here that all the packets sent to the OFFCHANNEL
1497                  * queue are sent in ROC session.
1498                  */
1499                 flush_work(&mvm->roc_done_wk);
1500         }
1501 }
1502
1503 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1504                                          struct ieee80211_vif *vif)
1505 {
1506         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1507         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1508         struct iwl_probe_resp_data *probe_data;
1509
1510         iwl_mvm_prepare_mac_removal(mvm, vif);
1511
1512         if (!(vif->type == NL80211_IFTYPE_AP ||
1513               vif->type == NL80211_IFTYPE_ADHOC))
1514                 iwl_mvm_tcm_rm_vif(mvm, vif);
1515
1516         mutex_lock(&mvm->mutex);
1517
1518         probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1519                                                lockdep_is_held(&mvm->mutex));
1520         RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1521         if (probe_data)
1522                 kfree_rcu(probe_data, rcu_head);
1523
1524         if (mvm->bf_allowed_vif == mvmvif) {
1525                 mvm->bf_allowed_vif = NULL;
1526                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1527                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1528         }
1529
1530         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1531
1532         /*
1533          * For AP/GO interface, the tear down of the resources allocated to the
1534          * interface is be handled as part of the stop_ap flow.
1535          */
1536         if (vif->type == NL80211_IFTYPE_AP ||
1537             vif->type == NL80211_IFTYPE_ADHOC) {
1538 #ifdef CONFIG_NL80211_TESTMODE
1539                 if (vif == mvm->noa_vif) {
1540                         mvm->noa_vif = NULL;
1541                         mvm->noa_duration = 0;
1542                 }
1543 #endif
1544                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1545                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1546                 goto out_release;
1547         }
1548
1549         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1550                 mvm->p2p_device_vif = NULL;
1551                 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1552                 iwl_mvm_binding_remove_vif(mvm, vif);
1553                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1554                 mvmvif->phy_ctxt = NULL;
1555         }
1556
1557         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1558                 mvm->vif_count--;
1559
1560         iwl_mvm_power_update_mac(mvm);
1561         iwl_mvm_mac_ctxt_remove(mvm, vif);
1562
1563         if (vif->type == NL80211_IFTYPE_MONITOR)
1564                 mvm->monitor_on = false;
1565
1566 out_release:
1567         mutex_unlock(&mvm->mutex);
1568 }
1569
1570 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1571 {
1572         return 0;
1573 }
1574
1575 struct iwl_mvm_mc_iter_data {
1576         struct iwl_mvm *mvm;
1577         int port_id;
1578 };
1579
1580 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1581                                       struct ieee80211_vif *vif)
1582 {
1583         struct iwl_mvm_mc_iter_data *data = _data;
1584         struct iwl_mvm *mvm = data->mvm;
1585         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1586         struct iwl_host_cmd hcmd = {
1587                 .id = MCAST_FILTER_CMD,
1588                 .flags = CMD_ASYNC,
1589                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1590         };
1591         int ret, len;
1592
1593         /* if we don't have free ports, mcast frames will be dropped */
1594         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1595                 return;
1596
1597         if (vif->type != NL80211_IFTYPE_STATION ||
1598             !vif->bss_conf.assoc)
1599                 return;
1600
1601         cmd->port_id = data->port_id++;
1602         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1603         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1604
1605         hcmd.len[0] = len;
1606         hcmd.data[0] = cmd;
1607
1608         ret = iwl_mvm_send_cmd(mvm, &hcmd);
1609         if (ret)
1610                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1611 }
1612
1613 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1614 {
1615         struct iwl_mvm_mc_iter_data iter_data = {
1616                 .mvm = mvm,
1617         };
1618
1619         lockdep_assert_held(&mvm->mutex);
1620
1621         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1622                 return;
1623
1624         ieee80211_iterate_active_interfaces_atomic(
1625                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1626                 iwl_mvm_mc_iface_iterator, &iter_data);
1627 }
1628
1629 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1630                                      struct netdev_hw_addr_list *mc_list)
1631 {
1632         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1633         struct iwl_mcast_filter_cmd *cmd;
1634         struct netdev_hw_addr *addr;
1635         int addr_count;
1636         bool pass_all;
1637         int len;
1638
1639         addr_count = netdev_hw_addr_list_count(mc_list);
1640         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1641                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1642         if (pass_all)
1643                 addr_count = 0;
1644
1645         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1646         cmd = kzalloc(len, GFP_ATOMIC);
1647         if (!cmd)
1648                 return 0;
1649
1650         if (pass_all) {
1651                 cmd->pass_all = 1;
1652                 return (u64)(unsigned long)cmd;
1653         }
1654
1655         netdev_hw_addr_list_for_each(addr, mc_list) {
1656                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1657                                    cmd->count, addr->addr);
1658                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1659                        addr->addr, ETH_ALEN);
1660                 cmd->count++;
1661         }
1662
1663         return (u64)(unsigned long)cmd;
1664 }
1665
1666 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1667                                      unsigned int changed_flags,
1668                                      unsigned int *total_flags,
1669                                      u64 multicast)
1670 {
1671         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1672         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1673
1674         mutex_lock(&mvm->mutex);
1675
1676         /* replace previous configuration */
1677         kfree(mvm->mcast_filter_cmd);
1678         mvm->mcast_filter_cmd = cmd;
1679
1680         if (!cmd)
1681                 goto out;
1682
1683         if (changed_flags & FIF_ALLMULTI)
1684                 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1685
1686         if (cmd->pass_all)
1687                 cmd->count = 0;
1688
1689         iwl_mvm_recalc_multicast(mvm);
1690 out:
1691         mutex_unlock(&mvm->mutex);
1692         *total_flags = 0;
1693 }
1694
1695 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1696                                         struct ieee80211_vif *vif,
1697                                         unsigned int filter_flags,
1698                                         unsigned int changed_flags)
1699 {
1700         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1701
1702         /* We support only filter for probe requests */
1703         if (!(changed_flags & FIF_PROBE_REQ))
1704                 return;
1705
1706         /* Supported only for p2p client interfaces */
1707         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1708             !vif->p2p)
1709                 return;
1710
1711         mutex_lock(&mvm->mutex);
1712         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1713         mutex_unlock(&mvm->mutex);
1714 }
1715
1716 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1717 struct iwl_bcast_iter_data {
1718         struct iwl_mvm *mvm;
1719         struct iwl_bcast_filter_cmd *cmd;
1720         u8 current_filter;
1721 };
1722
1723 static void
1724 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1725                          const struct iwl_fw_bcast_filter *in_filter,
1726                          struct iwl_fw_bcast_filter *out_filter)
1727 {
1728         struct iwl_fw_bcast_filter_attr *attr;
1729         int i;
1730
1731         memcpy(out_filter, in_filter, sizeof(*out_filter));
1732
1733         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1734                 attr = &out_filter->attrs[i];
1735
1736                 if (!attr->mask)
1737                         break;
1738
1739                 switch (attr->reserved1) {
1740                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1741                         if (vif->bss_conf.arp_addr_cnt != 1) {
1742                                 attr->mask = 0;
1743                                 continue;
1744                         }
1745
1746                         attr->val = vif->bss_conf.arp_addr_list[0];
1747                         break;
1748                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1749                         attr->val = *(__be32 *)&vif->addr[2];
1750                         break;
1751                 default:
1752                         break;
1753                 }
1754                 attr->reserved1 = 0;
1755                 out_filter->num_attrs++;
1756         }
1757 }
1758
1759 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1760                                           struct ieee80211_vif *vif)
1761 {
1762         struct iwl_bcast_iter_data *data = _data;
1763         struct iwl_mvm *mvm = data->mvm;
1764         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1765         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1766         struct iwl_fw_bcast_mac *bcast_mac;
1767         int i;
1768
1769         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1770                 return;
1771
1772         bcast_mac = &cmd->macs[mvmvif->id];
1773
1774         /*
1775          * enable filtering only for associated stations, but not for P2P
1776          * Clients
1777          */
1778         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1779             !vif->bss_conf.assoc)
1780                 return;
1781
1782         bcast_mac->default_discard = 1;
1783
1784         /* copy all configured filters */
1785         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1786                 /*
1787                  * Make sure we don't exceed our filters limit.
1788                  * if there is still a valid filter to be configured,
1789                  * be on the safe side and just allow bcast for this mac.
1790                  */
1791                 if (WARN_ON_ONCE(data->current_filter >=
1792                                  ARRAY_SIZE(cmd->filters))) {
1793                         bcast_mac->default_discard = 0;
1794                         bcast_mac->attached_filters = 0;
1795                         break;
1796                 }
1797
1798                 iwl_mvm_set_bcast_filter(vif,
1799                                          &mvm->bcast_filters[i],
1800                                          &cmd->filters[data->current_filter]);
1801
1802                 /* skip current filter if it contains no attributes */
1803                 if (!cmd->filters[data->current_filter].num_attrs)
1804                         continue;
1805
1806                 /* attach the filter to current mac */
1807                 bcast_mac->attached_filters |=
1808                                 cpu_to_le16(BIT(data->current_filter));
1809
1810                 data->current_filter++;
1811         }
1812 }
1813
1814 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1815                                     struct iwl_bcast_filter_cmd *cmd)
1816 {
1817         struct iwl_bcast_iter_data iter_data = {
1818                 .mvm = mvm,
1819                 .cmd = cmd,
1820         };
1821
1822         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1823                 return false;
1824
1825         memset(cmd, 0, sizeof(*cmd));
1826         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1827         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1828
1829 #ifdef CONFIG_IWLWIFI_DEBUGFS
1830         /* use debugfs filters/macs if override is configured */
1831         if (mvm->dbgfs_bcast_filtering.override) {
1832                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1833                        sizeof(cmd->filters));
1834                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1835                        sizeof(cmd->macs));
1836                 return true;
1837         }
1838 #endif
1839
1840         /* if no filters are configured, do nothing */
1841         if (!mvm->bcast_filters)
1842                 return false;
1843
1844         /* configure and attach these filters for each associated sta vif */
1845         ieee80211_iterate_active_interfaces(
1846                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1847                 iwl_mvm_bcast_filter_iterator, &iter_data);
1848
1849         return true;
1850 }
1851
1852 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1853 {
1854         struct iwl_bcast_filter_cmd cmd;
1855
1856         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1857                 return 0;
1858
1859         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1860                 return 0;
1861
1862         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1863                                     sizeof(cmd), &cmd);
1864 }
1865 #else
1866 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1867 {
1868         return 0;
1869 }
1870 #endif
1871
1872 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1873                                     struct ieee80211_vif *vif)
1874 {
1875         struct iwl_mu_group_mgmt_cmd cmd = {};
1876
1877         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1878                WLAN_MEMBERSHIP_LEN);
1879         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1880                WLAN_USER_POSITION_LEN);
1881
1882         return iwl_mvm_send_cmd_pdu(mvm,
1883                                     WIDE_ID(DATA_PATH_GROUP,
1884                                             UPDATE_MU_GROUPS_CMD),
1885                                     0, sizeof(cmd), &cmd);
1886 }
1887
1888 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1889                                            struct ieee80211_vif *vif)
1890 {
1891         if (vif->mu_mimo_owner) {
1892                 struct iwl_mu_group_mgmt_notif *notif = _data;
1893
1894                 /*
1895                  * MU-MIMO Group Id action frame is little endian. We treat
1896                  * the data received from firmware as if it came from the
1897                  * action frame, so no conversion is needed.
1898                  */
1899                 ieee80211_update_mu_groups(vif,
1900                                            (u8 *)&notif->membership_status,
1901                                            (u8 *)&notif->user_position);
1902         }
1903 }
1904
1905 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1906                                struct iwl_rx_cmd_buffer *rxb)
1907 {
1908         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1909         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1910
1911         ieee80211_iterate_active_interfaces_atomic(
1912                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1913                         iwl_mvm_mu_mimo_iface_iterator, notif);
1914 }
1915
1916 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
1917 {
1918         u8 byte_num = ppe_pos_bit / 8;
1919         u8 bit_num = ppe_pos_bit % 8;
1920         u8 residue_bits;
1921         u8 res;
1922
1923         if (bit_num <= 5)
1924                 return (ppe[byte_num] >> bit_num) &
1925                        (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
1926
1927         /*
1928          * If bit_num > 5, we have to combine bits with next byte.
1929          * Calculate how many bits we need to take from current byte (called
1930          * here "residue_bits"), and add them to bits from next byte.
1931          */
1932
1933         residue_bits = 8 - bit_num;
1934
1935         res = (ppe[byte_num + 1] &
1936                (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
1937               residue_bits;
1938         res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
1939
1940         return res;
1941 }
1942
1943 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
1944                                struct ieee80211_vif *vif, u8 sta_id)
1945 {
1946         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1947         struct iwl_he_sta_context_cmd sta_ctxt_cmd = {
1948                 .sta_id = sta_id,
1949                 .tid_limit = IWL_MAX_TID_COUNT,
1950                 .bss_color = vif->bss_conf.bss_color,
1951                 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
1952                 .frame_time_rts_th =
1953                         cpu_to_le16(vif->bss_conf.frame_time_rts_th),
1954         };
1955         struct ieee80211_sta *sta;
1956         u32 flags;
1957         int i;
1958
1959         rcu_read_lock();
1960
1961         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
1962         if (IS_ERR(sta)) {
1963                 rcu_read_unlock();
1964                 WARN(1, "Can't find STA to configure HE\n");
1965                 return;
1966         }
1967
1968         if (!sta->he_cap.has_he) {
1969                 rcu_read_unlock();
1970                 return;
1971         }
1972
1973         flags = 0;
1974
1975         /* HTC flags */
1976         if (sta->he_cap.he_cap_elem.mac_cap_info[0] &
1977             IEEE80211_HE_MAC_CAP0_HTC_HE)
1978                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
1979         if ((sta->he_cap.he_cap_elem.mac_cap_info[1] &
1980               IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
1981             (sta->he_cap.he_cap_elem.mac_cap_info[2] &
1982               IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
1983                 u8 link_adap =
1984                         ((sta->he_cap.he_cap_elem.mac_cap_info[2] &
1985                           IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
1986                          (sta->he_cap.he_cap_elem.mac_cap_info[1] &
1987                           IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
1988
1989                 if (link_adap == 2)
1990                         sta_ctxt_cmd.htc_flags |=
1991                                 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
1992                 else if (link_adap == 3)
1993                         sta_ctxt_cmd.htc_flags |=
1994                                 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
1995         }
1996         if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
1997                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
1998         if (sta->he_cap.he_cap_elem.mac_cap_info[3] &
1999             IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
2000                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
2001         if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
2002                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
2003
2004         /* If PPE Thresholds exist, parse them into a FW-familiar format */
2005         if (sta->he_cap.he_cap_elem.phy_cap_info[6] &
2006             IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
2007                 u8 nss = (sta->he_cap.ppe_thres[0] &
2008                           IEEE80211_PPE_THRES_NSS_MASK) + 1;
2009                 u8 ru_index_bitmap =
2010                         (sta->he_cap.ppe_thres[0] &
2011                          IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >>
2012                         IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS;
2013                 u8 *ppe = &sta->he_cap.ppe_thres[0];
2014                 u8 ppe_pos_bit = 7; /* Starting after PPE header */
2015
2016                 /*
2017                  * FW currently supports only nss == MAX_HE_SUPP_NSS
2018                  *
2019                  * If nss > MAX: we can ignore values we don't support
2020                  * If nss < MAX: we can set zeros in other streams
2021                  */
2022                 if (nss > MAX_HE_SUPP_NSS) {
2023                         IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
2024                                  MAX_HE_SUPP_NSS);
2025                         nss = MAX_HE_SUPP_NSS;
2026                 }
2027
2028                 for (i = 0; i < nss; i++) {
2029                         u8 ru_index_tmp = ru_index_bitmap << 1;
2030                         u8 bw;
2031
2032                         for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) {
2033                                 ru_index_tmp >>= 1;
2034                                 if (!(ru_index_tmp & 1))
2035                                         continue;
2036
2037                                 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] =
2038                                         iwl_mvm_he_get_ppe_val(ppe,
2039                                                                ppe_pos_bit);
2040                                 ppe_pos_bit +=
2041                                         IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2042                                 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] =
2043                                         iwl_mvm_he_get_ppe_val(ppe,
2044                                                                ppe_pos_bit);
2045                                 ppe_pos_bit +=
2046                                         IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2047                         }
2048                 }
2049
2050                 flags |= STA_CTXT_HE_PACKET_EXT;
2051         }
2052         rcu_read_unlock();
2053
2054         /* Mark MU EDCA as enabled, unless none detected on some AC */
2055         flags |= STA_CTXT_HE_MU_EDCA_CW;
2056         for (i = 0; i < AC_NUM; i++) {
2057                 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
2058                         &mvmvif->queue_params[i].mu_edca_param_rec;
2059
2060                 if (!mvmvif->queue_params[i].mu_edca) {
2061                         flags &= ~STA_CTXT_HE_MU_EDCA_CW;
2062                         break;
2063                 }
2064
2065                 sta_ctxt_cmd.trig_based_txf[i].cwmin =
2066                         cpu_to_le16(mu_edca->ecw_min_max & 0xf);
2067                 sta_ctxt_cmd.trig_based_txf[i].cwmax =
2068                         cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
2069                 sta_ctxt_cmd.trig_based_txf[i].aifsn =
2070                         cpu_to_le16(mu_edca->aifsn);
2071                 sta_ctxt_cmd.trig_based_txf[i].mu_time =
2072                         cpu_to_le16(mu_edca->mu_edca_timer);
2073         }
2074
2075         if (vif->bss_conf.multi_sta_back_32bit)
2076                 flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
2077
2078         if (vif->bss_conf.ack_enabled)
2079                 flags |= STA_CTXT_HE_ACK_ENABLED;
2080
2081         if (vif->bss_conf.uora_exists) {
2082                 flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
2083
2084                 sta_ctxt_cmd.rand_alloc_ecwmin =
2085                         vif->bss_conf.uora_ocw_range & 0x7;
2086                 sta_ctxt_cmd.rand_alloc_ecwmax =
2087                         (vif->bss_conf.uora_ocw_range >> 3) & 0x7;
2088         }
2089
2090         /* TODO: support Multi BSSID IE */
2091
2092         sta_ctxt_cmd.flags = cpu_to_le32(flags);
2093
2094         if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD,
2095                                                  DATA_PATH_GROUP, 0),
2096                                  0, sizeof(sta_ctxt_cmd), &sta_ctxt_cmd))
2097                 IWL_ERR(mvm, "Failed to config FW to work HE!\n");
2098 }
2099
2100 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2101                                              struct ieee80211_vif *vif,
2102                                              struct ieee80211_bss_conf *bss_conf,
2103                                              u32 changes)
2104 {
2105         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2106         int ret;
2107
2108         /*
2109          * Re-calculate the tsf id, as the master-slave relations depend on the
2110          * beacon interval, which was not known when the station interface was
2111          * added.
2112          */
2113         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
2114                 if (vif->bss_conf.he_support &&
2115                     !iwlwifi_mod_params.disable_11ax)
2116                         iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2117
2118                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2119         }
2120
2121         /*
2122          * If we're not associated yet, take the (new) BSSID before associating
2123          * so the firmware knows. If we're already associated, then use the old
2124          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2125          * branch for disassociation below.
2126          */
2127         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2128                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2129
2130         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2131         if (ret)
2132                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2133
2134         /* after sending it once, adopt mac80211 data */
2135         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2136         mvmvif->associated = bss_conf->assoc;
2137
2138         if (changes & BSS_CHANGED_ASSOC) {
2139                 if (bss_conf->assoc) {
2140                         /* clear statistics to get clean beacon counter */
2141                         iwl_mvm_request_statistics(mvm, true);
2142                         memset(&mvmvif->beacon_stats, 0,
2143                                sizeof(mvmvif->beacon_stats));
2144
2145                         /* add quota for this interface */
2146                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
2147                         if (ret) {
2148                                 IWL_ERR(mvm, "failed to update quotas\n");
2149                                 return;
2150                         }
2151
2152                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2153                                      &mvm->status)) {
2154                                 /*
2155                                  * If we're restarting then the firmware will
2156                                  * obviously have lost synchronisation with
2157                                  * the AP. It will attempt to synchronise by
2158                                  * itself, but we can make it more reliable by
2159                                  * scheduling a session protection time event.
2160                                  *
2161                                  * The firmware needs to receive a beacon to
2162                                  * catch up with synchronisation, use 110% of
2163                                  * the beacon interval.
2164                                  *
2165                                  * Set a large maximum delay to allow for more
2166                                  * than a single interface.
2167                                  */
2168                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2169                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
2170                                                         5 * dur, false);
2171                         }
2172
2173                         iwl_mvm_sf_update(mvm, vif, false);
2174                         iwl_mvm_power_vif_assoc(mvm, vif);
2175                         if (vif->p2p) {
2176                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2177                                 iwl_mvm_update_smps(mvm, vif,
2178                                                     IWL_MVM_SMPS_REQ_PROT,
2179                                                     IEEE80211_SMPS_DYNAMIC);
2180                         }
2181                 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2182                         /*
2183                          * If update fails - SF might be running in associated
2184                          * mode while disassociated - which is forbidden.
2185                          */
2186                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2187                                   "Failed to update SF upon disassociation\n");
2188
2189                         /*
2190                          * If we get an assert during the connection (after the
2191                          * station has been added, but before the vif is set
2192                          * to associated), mac80211 will re-add the station and
2193                          * then configure the vif. Since the vif is not
2194                          * associated, we would remove the station here and
2195                          * this would fail the recovery.
2196                          */
2197                         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2198                                       &mvm->status)) {
2199                                 /*
2200                                  * Remove AP station now that
2201                                  * the MAC is unassoc
2202                                  */
2203                                 ret = iwl_mvm_rm_sta_id(mvm, vif,
2204                                                         mvmvif->ap_sta_id);
2205                                 if (ret)
2206                                         IWL_ERR(mvm,
2207                                                 "failed to remove AP station\n");
2208
2209                                 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2210                                         mvm->d0i3_ap_sta_id =
2211                                                 IWL_MVM_INVALID_STA;
2212                                 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2213                         }
2214
2215                         /* remove quota for this interface */
2216                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2217                         if (ret)
2218                                 IWL_ERR(mvm, "failed to update quotas\n");
2219
2220                         if (vif->p2p)
2221                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2222
2223                         /* this will take the cleared BSSID from bss_conf */
2224                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2225                         if (ret)
2226                                 IWL_ERR(mvm,
2227                                         "failed to update MAC %pM (clear after unassoc)\n",
2228                                         vif->addr);
2229                 }
2230
2231                 /*
2232                  * The firmware tracks the MU-MIMO group on its own.
2233                  * However, on HW restart we should restore this data.
2234                  */
2235                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2236                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2237                         ret = iwl_mvm_update_mu_groups(mvm, vif);
2238                         if (ret)
2239                                 IWL_ERR(mvm,
2240                                         "failed to update VHT MU_MIMO groups\n");
2241                 }
2242
2243                 iwl_mvm_recalc_multicast(mvm);
2244                 iwl_mvm_configure_bcast_filter(mvm);
2245
2246                 /* reset rssi values */
2247                 mvmvif->bf_data.ave_beacon_signal = 0;
2248
2249                 iwl_mvm_bt_coex_vif_change(mvm);
2250                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2251                                     IEEE80211_SMPS_AUTOMATIC);
2252                 if (fw_has_capa(&mvm->fw->ucode_capa,
2253                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2254                         iwl_mvm_config_scan(mvm);
2255         }
2256
2257         if (changes & BSS_CHANGED_BEACON_INFO) {
2258                 /*
2259                  * We received a beacon from the associated AP so
2260                  * remove the session protection.
2261                  */
2262                 iwl_mvm_stop_session_protection(mvm, vif);
2263
2264                 iwl_mvm_sf_update(mvm, vif, false);
2265                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2266         }
2267
2268         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2269                        /*
2270                         * Send power command on every beacon change,
2271                         * because we may have not enabled beacon abort yet.
2272                         */
2273                        BSS_CHANGED_BEACON_INFO)) {
2274                 ret = iwl_mvm_power_update_mac(mvm);
2275                 if (ret)
2276                         IWL_ERR(mvm, "failed to update power mode\n");
2277         }
2278
2279         if (changes & BSS_CHANGED_TXPOWER) {
2280                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2281                                 bss_conf->txpower);
2282                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2283         }
2284
2285         if (changes & BSS_CHANGED_CQM) {
2286                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2287                 /* reset cqm events tracking */
2288                 mvmvif->bf_data.last_cqm_event = 0;
2289                 if (mvmvif->bf_data.bf_enabled) {
2290                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2291                         if (ret)
2292                                 IWL_ERR(mvm,
2293                                         "failed to update CQM thresholds\n");
2294                 }
2295         }
2296
2297         if (changes & BSS_CHANGED_ARP_FILTER) {
2298                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2299                 iwl_mvm_configure_bcast_filter(mvm);
2300         }
2301 }
2302
2303 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2304                                  struct ieee80211_vif *vif)
2305 {
2306         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2307         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2308         int ret;
2309
2310         /*
2311          * iwl_mvm_mac_ctxt_add() might read directly from the device
2312          * (the system time), so make sure it is available.
2313          */
2314         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2315         if (ret)
2316                 return ret;
2317
2318         mutex_lock(&mvm->mutex);
2319
2320         /* Send the beacon template */
2321         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2322         if (ret)
2323                 goto out_unlock;
2324
2325         /*
2326          * Re-calculate the tsf id, as the master-slave relations depend on the
2327          * beacon interval, which was not known when the AP interface was added.
2328          */
2329         if (vif->type == NL80211_IFTYPE_AP)
2330                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2331
2332         mvmvif->ap_assoc_sta_count = 0;
2333
2334         /* Add the mac context */
2335         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2336         if (ret)
2337                 goto out_unlock;
2338
2339         /* Perform the binding */
2340         ret = iwl_mvm_binding_add_vif(mvm, vif);
2341         if (ret)
2342                 goto out_remove;
2343
2344         /*
2345          * This is not very nice, but the simplest:
2346          * For older FWs adding the mcast sta before the bcast station may
2347          * cause assert 0x2b00.
2348          * This is fixed in later FW so make the order of removal depend on
2349          * the TLV
2350          */
2351         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2352                 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2353                 if (ret)
2354                         goto out_unbind;
2355                 /*
2356                  * Send the bcast station. At this stage the TBTT and DTIM time
2357                  * events are added and applied to the scheduler
2358                  */
2359                 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2360                 if (ret) {
2361                         iwl_mvm_rm_mcast_sta(mvm, vif);
2362                         goto out_unbind;
2363                 }
2364         } else {
2365                 /*
2366                  * Send the bcast station. At this stage the TBTT and DTIM time
2367                  * events are added and applied to the scheduler
2368                  */
2369                 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2370                 if (ret)
2371                         goto out_unbind;
2372                 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2373                 if (ret) {
2374                         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2375                         goto out_unbind;
2376                 }
2377         }
2378
2379         /* must be set before quota calculations */
2380         mvmvif->ap_ibss_active = true;
2381
2382         /* power updated needs to be done before quotas */
2383         iwl_mvm_power_update_mac(mvm);
2384
2385         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2386         if (ret)
2387                 goto out_quota_failed;
2388
2389         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2390         if (vif->p2p && mvm->p2p_device_vif)
2391                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2392
2393         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2394
2395         iwl_mvm_bt_coex_vif_change(mvm);
2396
2397         /* we don't support TDLS during DCM */
2398         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2399                 iwl_mvm_teardown_tdls_peers(mvm);
2400
2401         goto out_unlock;
2402
2403 out_quota_failed:
2404         iwl_mvm_power_update_mac(mvm);
2405         mvmvif->ap_ibss_active = false;
2406         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2407         iwl_mvm_rm_mcast_sta(mvm, vif);
2408 out_unbind:
2409         iwl_mvm_binding_remove_vif(mvm, vif);
2410 out_remove:
2411         iwl_mvm_mac_ctxt_remove(mvm, vif);
2412 out_unlock:
2413         mutex_unlock(&mvm->mutex);
2414         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2415         return ret;
2416 }
2417
2418 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2419                                  struct ieee80211_vif *vif)
2420 {
2421         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2422         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2423
2424         iwl_mvm_prepare_mac_removal(mvm, vif);
2425
2426         mutex_lock(&mvm->mutex);
2427
2428         /* Handle AP stop while in CSA */
2429         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2430                 iwl_mvm_remove_time_event(mvm, mvmvif,
2431                                           &mvmvif->time_event_data);
2432                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2433                 mvmvif->csa_countdown = false;
2434         }
2435
2436         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2437                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2438                 mvm->csa_tx_block_bcn_timeout = 0;
2439         }
2440
2441         mvmvif->ap_ibss_active = false;
2442         mvm->ap_last_beacon_gp2 = 0;
2443
2444         iwl_mvm_bt_coex_vif_change(mvm);
2445
2446         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2447
2448         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2449         if (vif->p2p && mvm->p2p_device_vif)
2450                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2451
2452         iwl_mvm_update_quotas(mvm, false, NULL);
2453
2454         /*
2455          * This is not very nice, but the simplest:
2456          * For older FWs removing the mcast sta before the bcast station may
2457          * cause assert 0x2b00.
2458          * This is fixed in later FW (which will stop beaconing when removing
2459          * bcast station).
2460          * So make the order of removal depend on the TLV
2461          */
2462         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2463                 iwl_mvm_rm_mcast_sta(mvm, vif);
2464         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2465         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2466                 iwl_mvm_rm_mcast_sta(mvm, vif);
2467         iwl_mvm_binding_remove_vif(mvm, vif);
2468
2469         iwl_mvm_power_update_mac(mvm);
2470
2471         iwl_mvm_mac_ctxt_remove(mvm, vif);
2472
2473         kfree(mvmvif->ap_wep_key);
2474         mvmvif->ap_wep_key = NULL;
2475
2476         mutex_unlock(&mvm->mutex);
2477 }
2478
2479 static void
2480 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2481                                  struct ieee80211_vif *vif,
2482                                  struct ieee80211_bss_conf *bss_conf,
2483                                  u32 changes)
2484 {
2485         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2486
2487         /* Changes will be applied when the AP/IBSS is started */
2488         if (!mvmvif->ap_ibss_active)
2489                 return;
2490
2491         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2492                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2493             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2494                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2495
2496         /* Need to send a new beacon template to the FW */
2497         if (changes & BSS_CHANGED_BEACON &&
2498             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2499                 IWL_WARN(mvm, "Failed updating beacon data\n");
2500
2501         if (changes & BSS_CHANGED_TXPOWER) {
2502                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2503                                 bss_conf->txpower);
2504                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2505         }
2506 }
2507
2508 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2509                                      struct ieee80211_vif *vif,
2510                                      struct ieee80211_bss_conf *bss_conf,
2511                                      u32 changes)
2512 {
2513         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2514
2515         /*
2516          * iwl_mvm_bss_info_changed_station() might call
2517          * iwl_mvm_protect_session(), which reads directly from
2518          * the device (the system time), so make sure it is available.
2519          */
2520         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2521                 return;
2522
2523         mutex_lock(&mvm->mutex);
2524
2525         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2526                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2527
2528         switch (vif->type) {
2529         case NL80211_IFTYPE_STATION:
2530                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2531                 break;
2532         case NL80211_IFTYPE_AP:
2533         case NL80211_IFTYPE_ADHOC:
2534                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2535                 break;
2536         case NL80211_IFTYPE_MONITOR:
2537                 if (changes & BSS_CHANGED_MU_GROUPS)
2538                         iwl_mvm_update_mu_groups(mvm, vif);
2539                 break;
2540         default:
2541                 /* shouldn't happen */
2542                 WARN_ON_ONCE(1);
2543         }
2544
2545         mutex_unlock(&mvm->mutex);
2546         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2547 }
2548
2549 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2550                                struct ieee80211_vif *vif,
2551                                struct ieee80211_scan_request *hw_req)
2552 {
2553         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2554         int ret;
2555
2556         if (hw_req->req.n_channels == 0 ||
2557             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2558                 return -EINVAL;
2559
2560         mutex_lock(&mvm->mutex);
2561         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2562         mutex_unlock(&mvm->mutex);
2563
2564         return ret;
2565 }
2566
2567 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2568                                        struct ieee80211_vif *vif)
2569 {
2570         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2571
2572         mutex_lock(&mvm->mutex);
2573
2574         /* Due to a race condition, it's possible that mac80211 asks
2575          * us to stop a hw_scan when it's already stopped.  This can
2576          * happen, for instance, if we stopped the scan ourselves,
2577          * called ieee80211_scan_completed() and the userspace called
2578          * cancel scan scan before ieee80211_scan_work() could run.
2579          * To handle that, simply return if the scan is not running.
2580         */
2581         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2582                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2583
2584         mutex_unlock(&mvm->mutex);
2585 }
2586
2587 static void
2588 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2589                                   struct ieee80211_sta *sta, u16 tids,
2590                                   int num_frames,
2591                                   enum ieee80211_frame_release_type reason,
2592                                   bool more_data)
2593 {
2594         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2595
2596         /* Called when we need to transmit (a) frame(s) from mac80211 */
2597
2598         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2599                                           tids, more_data, false);
2600 }
2601
2602 static void
2603 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2604                                     struct ieee80211_sta *sta, u16 tids,
2605                                     int num_frames,
2606                                     enum ieee80211_frame_release_type reason,
2607                                     bool more_data)
2608 {
2609         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2610
2611         /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2612
2613         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2614                                           tids, more_data, true);
2615 }
2616
2617 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2618                                      enum sta_notify_cmd cmd,
2619                                      struct ieee80211_sta *sta)
2620 {
2621         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2622         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2623         unsigned long txqs = 0, tids = 0;
2624         int tid;
2625
2626         /*
2627          * If we have TVQM then we get too high queue numbers - luckily
2628          * we really shouldn't get here with that because such hardware
2629          * should have firmware supporting buffer station offload.
2630          */
2631         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2632                 return;
2633
2634         spin_lock_bh(&mvmsta->lock);
2635         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2636                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2637
2638                 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2639                         continue;
2640
2641                 __set_bit(tid_data->txq_id, &txqs);
2642
2643                 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2644                         continue;
2645
2646                 __set_bit(tid, &tids);
2647         }
2648
2649         switch (cmd) {
2650         case STA_NOTIFY_SLEEP:
2651                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2652                         ieee80211_sta_set_buffered(sta, tid, true);
2653
2654                 if (txqs)
2655                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2656                 /*
2657                  * The fw updates the STA to be asleep. Tx packets on the Tx
2658                  * queues to this station will not be transmitted. The fw will
2659                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2660                  */
2661                 break;
2662         case STA_NOTIFY_AWAKE:
2663                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2664                         break;
2665
2666                 if (txqs)
2667                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2668                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2669                 break;
2670         default:
2671                 break;
2672         }
2673         spin_unlock_bh(&mvmsta->lock);
2674 }
2675
2676 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2677                                    struct ieee80211_vif *vif,
2678                                    enum sta_notify_cmd cmd,
2679                                    struct ieee80211_sta *sta)
2680 {
2681         __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2682 }
2683
2684 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2685 {
2686         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2687         struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2688         struct ieee80211_sta *sta;
2689         struct iwl_mvm_sta *mvmsta;
2690         bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2691
2692         if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2693                 return;
2694
2695         rcu_read_lock();
2696         sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2697         if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2698                 rcu_read_unlock();
2699                 return;
2700         }
2701
2702         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2703
2704         if (!mvmsta->vif ||
2705             mvmsta->vif->type != NL80211_IFTYPE_AP) {
2706                 rcu_read_unlock();
2707                 return;
2708         }
2709
2710         if (mvmsta->sleeping != sleeping) {
2711                 mvmsta->sleeping = sleeping;
2712                 __iwl_mvm_mac_sta_notify(mvm->hw,
2713                         sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2714                         sta);
2715                 ieee80211_sta_ps_transition(sta, sleeping);
2716         }
2717
2718         if (sleeping) {
2719                 switch (notif->type) {
2720                 case IWL_MVM_PM_EVENT_AWAKE:
2721                 case IWL_MVM_PM_EVENT_ASLEEP:
2722                         break;
2723                 case IWL_MVM_PM_EVENT_UAPSD:
2724                         ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2725                         break;
2726                 case IWL_MVM_PM_EVENT_PS_POLL:
2727                         ieee80211_sta_pspoll(sta);
2728                         break;
2729                 default:
2730                         break;
2731                 }
2732         }
2733
2734         rcu_read_unlock();
2735 }
2736
2737 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2738                                        struct ieee80211_vif *vif,
2739                                        struct ieee80211_sta *sta)
2740 {
2741         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2742         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2743
2744         /*
2745          * This is called before mac80211 does RCU synchronisation,
2746          * so here we already invalidate our internal RCU-protected
2747          * station pointer. The rest of the code will thus no longer
2748          * be able to find the station this way, and we don't rely
2749          * on further RCU synchronisation after the sta_state()
2750          * callback deleted the station.
2751          */
2752         mutex_lock(&mvm->mutex);
2753         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2754                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2755                                    ERR_PTR(-ENOENT));
2756
2757         mutex_unlock(&mvm->mutex);
2758 }
2759
2760 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2761                                 const u8 *bssid)
2762 {
2763         int i;
2764
2765         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2766                 struct iwl_mvm_tcm_mac *mdata;
2767
2768                 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
2769                 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
2770                 mdata->opened_rx_ba_sessions = false;
2771         }
2772
2773         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2774                 return;
2775
2776         if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2777                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2778                 return;
2779         }
2780
2781         if (!vif->p2p &&
2782             (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2783                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2784                 return;
2785         }
2786
2787         for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
2788                 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
2789                         vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2790                         return;
2791                 }
2792         }
2793
2794         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2795 }
2796
2797 static void
2798 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2799                            struct ieee80211_vif *vif, u8 *peer_addr,
2800                            enum nl80211_tdls_operation action)
2801 {
2802         struct iwl_fw_dbg_trigger_tlv *trig;
2803         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2804
2805         trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
2806                                      FW_DBG_TRIGGER_TDLS);
2807         if (!trig)
2808                 return;
2809
2810         tdls_trig = (void *)trig->data;
2811
2812         if (!(tdls_trig->action_bitmap & BIT(action)))
2813                 return;
2814
2815         if (tdls_trig->peer_mode &&
2816             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2817                 return;
2818
2819         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2820                                 "TDLS event occurred, peer %pM, action %d",
2821                                 peer_addr, action);
2822 }
2823
2824 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2825                                              struct iwl_mvm_sta *mvm_sta)
2826 {
2827         struct iwl_mvm_tid_data *tid_data;
2828         struct sk_buff *skb;
2829         int i;
2830
2831         spin_lock_bh(&mvm_sta->lock);
2832         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2833                 tid_data = &mvm_sta->tid_data[i];
2834
2835                 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) {
2836                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2837
2838                         /*
2839                          * The first deferred frame should've stopped the MAC
2840                          * queues, so we should never get a second deferred
2841                          * frame for the RA/TID.
2842                          */
2843                         iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue));
2844                         ieee80211_free_txskb(mvm->hw, skb);
2845                 }
2846         }
2847         spin_unlock_bh(&mvm_sta->lock);
2848 }
2849
2850 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2851                                  struct ieee80211_vif *vif,
2852                                  struct ieee80211_sta *sta,
2853                                  enum ieee80211_sta_state old_state,
2854                                  enum ieee80211_sta_state new_state)
2855 {
2856         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2857         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2858         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2859         int ret;
2860
2861         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2862                            sta->addr, old_state, new_state);
2863
2864         /* this would be a mac80211 bug ... but don't crash */
2865         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2866                 return -EINVAL;
2867
2868         /*
2869          * If we are in a STA removal flow and in DQA mode:
2870          *
2871          * This is after the sync_rcu part, so the queues have already been
2872          * flushed. No more TXs on their way in mac80211's path, and no more in
2873          * the queues.
2874          * Also, we won't be getting any new TX frames for this station.
2875          * What we might have are deferred TX frames that need to be taken care
2876          * of.
2877          *
2878          * Drop any still-queued deferred-frame before removing the STA, and
2879          * make sure the worker is no longer handling frames for this STA.
2880          */
2881         if (old_state == IEEE80211_STA_NONE &&
2882             new_state == IEEE80211_STA_NOTEXIST) {
2883                 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2884                 flush_work(&mvm->add_stream_wk);
2885
2886                 /*
2887                  * No need to make sure deferred TX indication is off since the
2888                  * worker will already remove it if it was on
2889                  */
2890         }
2891
2892         mutex_lock(&mvm->mutex);
2893         /* track whether or not the station is associated */
2894         mvm_sta->sta_state = new_state;
2895
2896         if (old_state == IEEE80211_STA_NOTEXIST &&
2897             new_state == IEEE80211_STA_NONE) {
2898                 /*
2899                  * Firmware bug - it'll crash if the beacon interval is less
2900                  * than 16. We can't avoid connecting at all, so refuse the
2901                  * station state change, this will cause mac80211 to abandon
2902                  * attempts to connect to this AP, and eventually wpa_s will
2903                  * blacklist the AP...
2904                  */
2905                 if (vif->type == NL80211_IFTYPE_STATION &&
2906                     vif->bss_conf.beacon_int < 16) {
2907                         IWL_ERR(mvm,
2908                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2909                                 sta->addr, vif->bss_conf.beacon_int);
2910                         ret = -EINVAL;
2911                         goto out_unlock;
2912                 }
2913
2914                 if (sta->tdls &&
2915                     (vif->p2p ||
2916                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2917                                                 IWL_MVM_TDLS_STA_COUNT ||
2918                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2919                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2920                         ret = -EBUSY;
2921                         goto out_unlock;
2922                 }
2923
2924                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2925                 if (sta->tdls && ret == 0) {
2926                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2927                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2928                                                    NL80211_TDLS_SETUP);
2929                 }
2930         } else if (old_state == IEEE80211_STA_NONE &&
2931                    new_state == IEEE80211_STA_AUTH) {
2932                 /*
2933                  * EBS may be disabled due to previous failures reported by FW.
2934                  * Reset EBS status here assuming environment has been changed.
2935                  */
2936                 mvm->last_ebs_successful = true;
2937                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2938                 ret = 0;
2939         } else if (old_state == IEEE80211_STA_AUTH &&
2940                    new_state == IEEE80211_STA_ASSOC) {
2941                 if (vif->type == NL80211_IFTYPE_AP) {
2942                         mvmvif->ap_assoc_sta_count++;
2943                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2944                 }
2945
2946                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2947                                      false);
2948                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2949         } else if (old_state == IEEE80211_STA_ASSOC &&
2950                    new_state == IEEE80211_STA_AUTHORIZED) {
2951
2952                 /* we don't support TDLS during DCM */
2953                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2954                         iwl_mvm_teardown_tdls_peers(mvm);
2955
2956                 if (sta->tdls)
2957                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2958                                                    NL80211_TDLS_ENABLE_LINK);
2959
2960                 /* enable beacon filtering */
2961                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2962
2963                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2964                                      true);
2965
2966                 /* if wep is used, need to set the key for the station now */
2967                 if (vif->type == NL80211_IFTYPE_AP && mvmvif->ap_wep_key)
2968                         ret = iwl_mvm_set_sta_key(mvm, vif, sta,
2969                                                   mvmvif->ap_wep_key,
2970                                                   STA_KEY_IDX_INVALID);
2971                 else
2972                         ret = 0;
2973         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2974                    new_state == IEEE80211_STA_ASSOC) {
2975                 /* disable beacon filtering */
2976                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2977                 ret = 0;
2978         } else if (old_state == IEEE80211_STA_ASSOC &&
2979                    new_state == IEEE80211_STA_AUTH) {
2980                 if (vif->type == NL80211_IFTYPE_AP) {
2981                         mvmvif->ap_assoc_sta_count--;
2982                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2983                 }
2984                 ret = 0;
2985         } else if (old_state == IEEE80211_STA_AUTH &&
2986                    new_state == IEEE80211_STA_NONE) {
2987                 ret = 0;
2988         } else if (old_state == IEEE80211_STA_NONE &&
2989                    new_state == IEEE80211_STA_NOTEXIST) {
2990                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2991                 if (sta->tdls) {
2992                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2993                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2994                                                    NL80211_TDLS_DISABLE_LINK);
2995                 }
2996         } else {
2997                 ret = -EIO;
2998         }
2999  out_unlock:
3000         mutex_unlock(&mvm->mutex);
3001
3002         if (sta->tdls && ret == 0) {
3003                 if (old_state == IEEE80211_STA_NOTEXIST &&
3004                     new_state == IEEE80211_STA_NONE)
3005                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3006                 else if (old_state == IEEE80211_STA_NONE &&
3007                          new_state == IEEE80211_STA_NOTEXIST)
3008                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3009         }
3010
3011         return ret;
3012 }
3013
3014 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3015 {
3016         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3017
3018         mvm->rts_threshold = value;
3019
3020         return 0;
3021 }
3022
3023 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
3024                                   struct ieee80211_vif *vif,
3025                                   struct ieee80211_sta *sta, u32 changed)
3026 {
3027         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3028
3029         if (vif->type == NL80211_IFTYPE_STATION &&
3030             changed & IEEE80211_RC_NSS_CHANGED)
3031                 iwl_mvm_sf_update(mvm, vif, false);
3032 }
3033
3034 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
3035                                struct ieee80211_vif *vif, u16 ac,
3036                                const struct ieee80211_tx_queue_params *params)
3037 {
3038         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3039         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3040
3041         mvmvif->queue_params[ac] = *params;
3042
3043         /*
3044          * No need to update right away, we'll get BSS_CHANGED_QOS
3045          * The exception is P2P_DEVICE interface which needs immediate update.
3046          */
3047         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
3048                 int ret;
3049
3050                 mutex_lock(&mvm->mutex);
3051                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3052                 mutex_unlock(&mvm->mutex);
3053                 return ret;
3054         }
3055         return 0;
3056 }
3057
3058 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3059                                        struct ieee80211_vif *vif,
3060                                        u16 req_duration)
3061 {
3062         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3063         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
3064         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
3065
3066         /*
3067          * iwl_mvm_protect_session() reads directly from the device
3068          * (the system time), so make sure it is available.
3069          */
3070         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
3071                 return;
3072
3073         if (req_duration > duration)
3074                 duration = req_duration;
3075
3076         mutex_lock(&mvm->mutex);
3077         /* Try really hard to protect the session and hear a beacon */
3078         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
3079         mutex_unlock(&mvm->mutex);
3080
3081         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
3082 }
3083
3084 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
3085                                         struct ieee80211_vif *vif,
3086                                         struct cfg80211_sched_scan_request *req,
3087                                         struct ieee80211_scan_ies *ies)
3088 {
3089         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3090
3091         int ret;
3092
3093         mutex_lock(&mvm->mutex);
3094
3095         if (!vif->bss_conf.idle) {
3096                 ret = -EBUSY;
3097                 goto out;
3098         }
3099
3100         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3101
3102 out:
3103         mutex_unlock(&mvm->mutex);
3104         return ret;
3105 }
3106
3107 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
3108                                        struct ieee80211_vif *vif)
3109 {
3110         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3111         int ret;
3112
3113         mutex_lock(&mvm->mutex);
3114
3115         /* Due to a race condition, it's possible that mac80211 asks
3116          * us to stop a sched_scan when it's already stopped.  This
3117          * can happen, for instance, if we stopped the scan ourselves,
3118          * called ieee80211_sched_scan_stopped() and the userspace called
3119          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
3120          * could run.  To handle this, simply return if the scan is
3121          * not running.
3122         */
3123         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3124                 mutex_unlock(&mvm->mutex);
3125                 return 0;
3126         }
3127
3128         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3129         mutex_unlock(&mvm->mutex);
3130         iwl_mvm_wait_for_async_handlers(mvm);
3131
3132         return ret;
3133 }
3134
3135 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3136                                enum set_key_cmd cmd,
3137                                struct ieee80211_vif *vif,
3138                                struct ieee80211_sta *sta,
3139                                struct ieee80211_key_conf *key)
3140 {
3141         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3142         struct iwl_mvm_sta *mvmsta;
3143         struct iwl_mvm_key_pn *ptk_pn;
3144         int keyidx = key->keyidx;
3145         int ret;
3146         u8 key_offset;
3147
3148         if (iwlwifi_mod_params.swcrypto) {
3149                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
3150                 return -EOPNOTSUPP;
3151         }
3152
3153         switch (key->cipher) {
3154         case WLAN_CIPHER_SUITE_TKIP:
3155                 if (!mvm->trans->cfg->gen2) {
3156                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3157                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3158                 } else if (vif->type == NL80211_IFTYPE_STATION) {
3159                         key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
3160                 } else {
3161                         IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
3162                         return -EOPNOTSUPP;
3163                 }
3164                 break;
3165         case WLAN_CIPHER_SUITE_CCMP:
3166         case WLAN_CIPHER_SUITE_GCMP:
3167         case WLAN_CIPHER_SUITE_GCMP_256:
3168                 if (!iwl_mvm_has_new_tx_api(mvm))
3169                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3170                 break;
3171         case WLAN_CIPHER_SUITE_AES_CMAC:
3172         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3173         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3174                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3175                 break;
3176         case WLAN_CIPHER_SUITE_WEP40:
3177         case WLAN_CIPHER_SUITE_WEP104:
3178                 if (vif->type == NL80211_IFTYPE_AP) {
3179                         struct iwl_mvm_vif *mvmvif =
3180                                 iwl_mvm_vif_from_mac80211(vif);
3181
3182                         mvmvif->ap_wep_key = kmemdup(key,
3183                                                      sizeof(*key) + key->keylen,
3184                                                      GFP_KERNEL);
3185                         if (!mvmvif->ap_wep_key)
3186                                 return -ENOMEM;
3187                 }
3188
3189                 if (vif->type != NL80211_IFTYPE_STATION)
3190                         return 0;
3191                 break;
3192         default:
3193                 /* currently FW supports only one optional cipher scheme */
3194                 if (hw->n_cipher_schemes &&
3195                     hw->cipher_schemes->cipher == key->cipher)
3196                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3197                 else
3198                         return -EOPNOTSUPP;
3199         }
3200
3201         mutex_lock(&mvm->mutex);
3202
3203         switch (cmd) {
3204         case SET_KEY:
3205                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
3206                      vif->type == NL80211_IFTYPE_AP) && !sta) {
3207                         /*
3208                          * GTK on AP interface is a TX-only key, return 0;
3209                          * on IBSS they're per-station and because we're lazy
3210                          * we don't support them for RX, so do the same.
3211                          * CMAC/GMAC in AP/IBSS modes must be done in software.
3212                          */
3213                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3214                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3215                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3216                                 ret = -EOPNOTSUPP;
3217                         else
3218                                 ret = 0;
3219
3220                         if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
3221                             key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
3222                             !iwl_mvm_has_new_tx_api(mvm)) {
3223                                 key->hw_key_idx = STA_KEY_IDX_INVALID;
3224                                 break;
3225                         }
3226                 }
3227
3228                 /* During FW restart, in order to restore the state as it was,
3229                  * don't try to reprogram keys we previously failed for.
3230                  */
3231                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3232                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
3233                         IWL_DEBUG_MAC80211(mvm,
3234                                            "skip invalid idx key programming during restart\n");
3235                         ret = 0;
3236                         break;
3237                 }
3238
3239                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3240                     sta && iwl_mvm_has_new_rx_api(mvm) &&
3241                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3242                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3243                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3244                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3245                         struct ieee80211_key_seq seq;
3246                         int tid, q;
3247
3248                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
3249                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3250                         ptk_pn = kzalloc(struct_size(ptk_pn, q,
3251                                                      mvm->trans->num_rx_queues),
3252                                          GFP_KERNEL);
3253                         if (!ptk_pn) {
3254                                 ret = -ENOMEM;
3255                                 break;
3256                         }
3257
3258                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3259                                 ieee80211_get_key_rx_seq(key, tid, &seq);
3260                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3261                                         memcpy(ptk_pn->q[q].pn[tid],
3262                                                seq.ccmp.pn,
3263                                                IEEE80211_CCMP_PN_LEN);
3264                         }
3265
3266                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3267                 }
3268
3269                 /* in HW restart reuse the index, otherwise request a new one */
3270                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3271                         key_offset = key->hw_key_idx;
3272                 else
3273                         key_offset = STA_KEY_IDX_INVALID;
3274
3275                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3276                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3277                 if (ret) {
3278                         IWL_WARN(mvm, "set key failed\n");
3279                         /*
3280                          * can't add key for RX, but we don't need it
3281                          * in the device for TX so still return 0
3282                          */
3283                         key->hw_key_idx = STA_KEY_IDX_INVALID;
3284                         ret = 0;
3285                 }
3286
3287                 break;
3288         case DISABLE_KEY:
3289                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3290                         ret = 0;
3291                         break;
3292                 }
3293
3294                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3295                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3296                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3297                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3298                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3299                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
3300                         ptk_pn = rcu_dereference_protected(
3301                                                 mvmsta->ptk_pn[keyidx],
3302                                                 lockdep_is_held(&mvm->mutex));
3303                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3304                         if (ptk_pn)
3305                                 kfree_rcu(ptk_pn, rcu_head);
3306                 }
3307
3308                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3309                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3310                 break;
3311         default:
3312                 ret = -EINVAL;
3313         }
3314
3315         mutex_unlock(&mvm->mutex);
3316         return ret;
3317 }
3318
3319 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3320                                         struct ieee80211_vif *vif,
3321                                         struct ieee80211_key_conf *keyconf,
3322                                         struct ieee80211_sta *sta,
3323                                         u32 iv32, u16 *phase1key)
3324 {
3325         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3326
3327         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3328                 return;
3329
3330         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3331 }
3332
3333
3334 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3335                                struct iwl_rx_packet *pkt, void *data)
3336 {
3337         struct iwl_mvm *mvm =
3338                 container_of(notif_wait, struct iwl_mvm, notif_wait);
3339         struct iwl_hs20_roc_res *resp;
3340         int resp_len = iwl_rx_packet_payload_len(pkt);
3341         struct iwl_mvm_time_event_data *te_data = data;
3342
3343         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3344                 return true;
3345
3346         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3347                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3348                 return true;
3349         }
3350
3351         resp = (void *)pkt->data;
3352
3353         IWL_DEBUG_TE(mvm,
3354                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3355                      resp->status, resp->event_unique_id);
3356
3357         te_data->uid = le32_to_cpu(resp->event_unique_id);
3358         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3359                      te_data->uid);
3360
3361         spin_lock_bh(&mvm->time_event_lock);
3362         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3363         spin_unlock_bh(&mvm->time_event_lock);
3364
3365         return true;
3366 }
3367
3368 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3369 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3370 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3371 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3372 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3373 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3374                                     struct ieee80211_channel *channel,
3375                                     struct ieee80211_vif *vif,
3376                                     int duration)
3377 {
3378         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3379         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3380         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3381         static const u16 time_event_response[] = { HOT_SPOT_CMD };
3382         struct iwl_notification_wait wait_time_event;
3383         u32 dtim_interval = vif->bss_conf.dtim_period *
3384                 vif->bss_conf.beacon_int;
3385         u32 req_dur, delay;
3386         struct iwl_hs20_roc_req aux_roc_req = {
3387                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3388                 .id_and_color =
3389                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3390                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3391                 /* Set the channel info data */
3392                 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3393                         PHY_BAND_24 : PHY_BAND_5,
3394                 .channel_info.channel = channel->hw_value,
3395                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3396                 /* Set the time and duration */
3397                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3398          };
3399
3400         delay = AUX_ROC_MIN_DELAY;
3401         req_dur = MSEC_TO_TU(duration);
3402
3403         /*
3404          * If we are associated we want the delay time to be at least one
3405          * dtim interval so that the FW can wait until after the DTIM and
3406          * then start the time event, this will potentially allow us to
3407          * remain off-channel for the max duration.
3408          * Since we want to use almost a whole dtim interval we would also
3409          * like the delay to be for 2-3 dtim intervals, in case there are
3410          * other time events with higher priority.
3411          */
3412         if (vif->bss_conf.assoc) {
3413                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3414                 /* We cannot remain off-channel longer than the DTIM interval */
3415                 if (dtim_interval <= req_dur) {
3416                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3417                         if (req_dur <= AUX_ROC_MIN_DURATION)
3418                                 req_dur = dtim_interval -
3419                                         AUX_ROC_MIN_SAFETY_BUFFER;
3420                 }
3421         }
3422
3423         aux_roc_req.duration = cpu_to_le32(req_dur);
3424         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3425
3426         IWL_DEBUG_TE(mvm,
3427                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3428                      channel->hw_value, req_dur, duration, delay,
3429                      dtim_interval);
3430         /* Set the node address */
3431         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3432
3433         lockdep_assert_held(&mvm->mutex);
3434
3435         spin_lock_bh(&mvm->time_event_lock);
3436
3437         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3438                 spin_unlock_bh(&mvm->time_event_lock);
3439                 return -EIO;
3440         }
3441
3442         te_data->vif = vif;
3443         te_data->duration = duration;
3444         te_data->id = HOT_SPOT_CMD;
3445
3446         spin_unlock_bh(&mvm->time_event_lock);
3447
3448         /*
3449          * Use a notification wait, which really just processes the
3450          * command response and doesn't wait for anything, in order
3451          * to be able to process the response and get the UID inside
3452          * the RX path. Using CMD_WANT_SKB doesn't work because it
3453          * stores the buffer and then wakes up this thread, by which
3454          * time another notification (that the time event started)
3455          * might already be processed unsuccessfully.
3456          */
3457         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3458                                    time_event_response,
3459                                    ARRAY_SIZE(time_event_response),
3460                                    iwl_mvm_rx_aux_roc, te_data);
3461
3462         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3463                                    &aux_roc_req);
3464
3465         if (res) {
3466                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3467                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3468                 goto out_clear_te;
3469         }
3470
3471         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3472         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3473         /* should never fail */
3474         WARN_ON_ONCE(res);
3475
3476         if (res) {
3477  out_clear_te:
3478                 spin_lock_bh(&mvm->time_event_lock);
3479                 iwl_mvm_te_clear_data(mvm, te_data);
3480                 spin_unlock_bh(&mvm->time_event_lock);
3481         }
3482
3483         return res;
3484 }
3485
3486 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3487                        struct ieee80211_vif *vif,
3488                        struct ieee80211_channel *channel,
3489                        int duration,
3490                        enum ieee80211_roc_type type)
3491 {
3492         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3493         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3494         struct cfg80211_chan_def chandef;
3495         struct iwl_mvm_phy_ctxt *phy_ctxt;
3496         int ret, i;
3497
3498         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3499                            duration, type);
3500
3501         /*
3502          * Flush the done work, just in case it's still pending, so that
3503          * the work it does can complete and we can accept new frames.
3504          */
3505         flush_work(&mvm->roc_done_wk);
3506
3507         mutex_lock(&mvm->mutex);
3508
3509         switch (vif->type) {
3510         case NL80211_IFTYPE_STATION:
3511                 if (fw_has_capa(&mvm->fw->ucode_capa,
3512                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3513                         /* Use aux roc framework (HS20) */
3514                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3515                                                        vif, duration);
3516                         goto out_unlock;
3517                 }
3518                 IWL_ERR(mvm, "hotspot not supported\n");
3519                 ret = -EINVAL;
3520                 goto out_unlock;
3521         case NL80211_IFTYPE_P2P_DEVICE:
3522                 /* handle below */
3523                 break;
3524         default:
3525                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3526                 ret = -EINVAL;
3527                 goto out_unlock;
3528         }
3529
3530         for (i = 0; i < NUM_PHY_CTX; i++) {
3531                 phy_ctxt = &mvm->phy_ctxts[i];
3532                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3533                         continue;
3534
3535                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3536                         /*
3537                          * Unbind the P2P_DEVICE from the current PHY context,
3538                          * and if the PHY context is not used remove it.
3539                          */
3540                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3541                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3542                                 goto out_unlock;
3543
3544                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3545
3546                         /* Bind the P2P_DEVICE to the current PHY Context */
3547                         mvmvif->phy_ctxt = phy_ctxt;
3548
3549                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3550                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3551                                 goto out_unlock;
3552
3553                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3554                         goto schedule_time_event;
3555                 }
3556         }
3557
3558         /* Need to update the PHY context only if the ROC channel changed */
3559         if (channel == mvmvif->phy_ctxt->channel)
3560                 goto schedule_time_event;
3561
3562         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3563
3564         /*
3565          * Change the PHY context configuration as it is currently referenced
3566          * only by the P2P Device MAC
3567          */
3568         if (mvmvif->phy_ctxt->ref == 1) {
3569                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3570                                                &chandef, 1, 1);
3571                 if (ret)
3572                         goto out_unlock;
3573         } else {
3574                 /*
3575                  * The PHY context is shared with other MACs. Need to remove the
3576                  * P2P Device from the binding, allocate an new PHY context and
3577                  * create a new binding
3578                  */
3579                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3580                 if (!phy_ctxt) {
3581                         ret = -ENOSPC;
3582                         goto out_unlock;
3583                 }
3584
3585                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3586                                                1, 1);
3587                 if (ret) {
3588                         IWL_ERR(mvm, "Failed to change PHY context\n");
3589                         goto out_unlock;
3590                 }
3591
3592                 /* Unbind the P2P_DEVICE from the current PHY context */
3593                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3594                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3595                         goto out_unlock;
3596
3597                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3598
3599                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3600                 mvmvif->phy_ctxt = phy_ctxt;
3601
3602                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3603                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3604                         goto out_unlock;
3605
3606                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3607         }
3608
3609 schedule_time_event:
3610         /* Schedule the time events */
3611         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3612
3613 out_unlock:
3614         mutex_unlock(&mvm->mutex);
3615         IWL_DEBUG_MAC80211(mvm, "leave\n");
3616         return ret;
3617 }
3618
3619 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3620 {
3621         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3622
3623         IWL_DEBUG_MAC80211(mvm, "enter\n");
3624
3625         mutex_lock(&mvm->mutex);
3626         iwl_mvm_stop_roc(mvm);
3627         mutex_unlock(&mvm->mutex);
3628
3629         IWL_DEBUG_MAC80211(mvm, "leave\n");
3630         return 0;
3631 }
3632
3633 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3634                                  struct ieee80211_chanctx_conf *ctx)
3635 {
3636         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3637         struct iwl_mvm_phy_ctxt *phy_ctxt;
3638         int ret;
3639
3640         lockdep_assert_held(&mvm->mutex);
3641
3642         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3643
3644         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3645         if (!phy_ctxt) {
3646                 ret = -ENOSPC;
3647                 goto out;
3648         }
3649
3650         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3651                                        ctx->rx_chains_static,
3652                                        ctx->rx_chains_dynamic);
3653         if (ret) {
3654                 IWL_ERR(mvm, "Failed to add PHY context\n");
3655                 goto out;
3656         }
3657
3658         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3659         *phy_ctxt_id = phy_ctxt->id;
3660 out:
3661         return ret;
3662 }
3663
3664 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3665                                struct ieee80211_chanctx_conf *ctx)
3666 {
3667         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3668         int ret;
3669
3670         mutex_lock(&mvm->mutex);
3671         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3672         mutex_unlock(&mvm->mutex);
3673
3674         return ret;
3675 }
3676
3677 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3678                                      struct ieee80211_chanctx_conf *ctx)
3679 {
3680         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3681         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3682
3683         lockdep_assert_held(&mvm->mutex);
3684
3685         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3686 }
3687
3688 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3689                                    struct ieee80211_chanctx_conf *ctx)
3690 {
3691         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3692
3693         mutex_lock(&mvm->mutex);
3694         __iwl_mvm_remove_chanctx(mvm, ctx);
3695         mutex_unlock(&mvm->mutex);
3696 }
3697
3698 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3699                                    struct ieee80211_chanctx_conf *ctx,
3700                                    u32 changed)
3701 {
3702         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3703         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3704         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3705
3706         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3707                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3708                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3709                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3710                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3711                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3712                       phy_ctxt->ref, changed))
3713                 return;
3714
3715         mutex_lock(&mvm->mutex);
3716
3717         /* we are only changing the min_width, may be a noop */
3718         if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
3719                 if (phy_ctxt->width == ctx->min_def.width)
3720                         goto out_unlock;
3721
3722                 /* we are just toggling between 20_NOHT and 20 */
3723                 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
3724                     ctx->min_def.width <= NL80211_CHAN_WIDTH_20)
3725                         goto out_unlock;
3726         }
3727
3728         iwl_mvm_bt_coex_vif_change(mvm);
3729         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3730                                  ctx->rx_chains_static,
3731                                  ctx->rx_chains_dynamic);
3732
3733 out_unlock:
3734         mutex_unlock(&mvm->mutex);
3735 }
3736
3737 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3738                                         struct ieee80211_vif *vif,
3739                                         struct ieee80211_chanctx_conf *ctx,
3740                                         bool switching_chanctx)
3741 {
3742         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3743         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3744         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3745         int ret;
3746
3747         lockdep_assert_held(&mvm->mutex);
3748
3749         mvmvif->phy_ctxt = phy_ctxt;
3750
3751         switch (vif->type) {
3752         case NL80211_IFTYPE_AP:
3753                 /* only needed if we're switching chanctx (i.e. during CSA) */
3754                 if (switching_chanctx) {
3755                         mvmvif->ap_ibss_active = true;
3756                         break;
3757                 }
3758         case NL80211_IFTYPE_ADHOC:
3759                 /*
3760                  * The AP binding flow is handled as part of the start_ap flow
3761                  * (in bss_info_changed), similarly for IBSS.
3762                  */
3763                 ret = 0;
3764                 goto out;
3765         case NL80211_IFTYPE_STATION:
3766                 mvmvif->csa_bcn_pending = false;
3767                 break;
3768         case NL80211_IFTYPE_MONITOR:
3769                 /* always disable PS when a monitor interface is active */
3770                 mvmvif->ps_disabled = true;
3771                 break;
3772         default:
3773                 ret = -EINVAL;
3774                 goto out;
3775         }
3776
3777         ret = iwl_mvm_binding_add_vif(mvm, vif);
3778         if (ret)
3779                 goto out;
3780
3781         /*
3782          * Power state must be updated before quotas,
3783          * otherwise fw will complain.
3784          */
3785         iwl_mvm_power_update_mac(mvm);
3786
3787         /* Setting the quota at this stage is only required for monitor
3788          * interfaces. For the other types, the bss_info changed flow
3789          * will handle quota settings.
3790          */
3791         if (vif->type == NL80211_IFTYPE_MONITOR) {
3792                 mvmvif->monitor_active = true;
3793                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3794                 if (ret)
3795                         goto out_remove_binding;
3796
3797                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3798                 if (ret)
3799                         goto out_remove_binding;
3800
3801         }
3802
3803         /* Handle binding during CSA */
3804         if (vif->type == NL80211_IFTYPE_AP) {
3805                 iwl_mvm_update_quotas(mvm, false, NULL);
3806                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3807         }
3808
3809         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3810                 u32 duration = 3 * vif->bss_conf.beacon_int;
3811
3812                 /* iwl_mvm_protect_session() reads directly from the
3813                  * device (the system time), so make sure it is
3814                  * available.
3815                  */
3816                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3817                 if (ret)
3818                         goto out_remove_binding;
3819
3820                 /* Protect the session to make sure we hear the first
3821                  * beacon on the new channel.
3822                  */
3823                 mvmvif->csa_bcn_pending = true;
3824                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3825                                         vif->bss_conf.beacon_int / 2,
3826                                         true);
3827
3828                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3829
3830                 iwl_mvm_update_quotas(mvm, false, NULL);
3831         }
3832
3833         goto out;
3834
3835 out_remove_binding:
3836         iwl_mvm_binding_remove_vif(mvm, vif);
3837         iwl_mvm_power_update_mac(mvm);
3838 out:
3839         if (ret)
3840                 mvmvif->phy_ctxt = NULL;
3841         return ret;
3842 }
3843 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3844                                       struct ieee80211_vif *vif,
3845                                       struct ieee80211_chanctx_conf *ctx)
3846 {
3847         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3848         int ret;
3849
3850         mutex_lock(&mvm->mutex);
3851         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3852         mutex_unlock(&mvm->mutex);
3853
3854         return ret;
3855 }
3856
3857 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3858                                            struct ieee80211_vif *vif,
3859                                            struct ieee80211_chanctx_conf *ctx,
3860                                            bool switching_chanctx)
3861 {
3862         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3863         struct ieee80211_vif *disabled_vif = NULL;
3864
3865         lockdep_assert_held(&mvm->mutex);
3866
3867         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3868
3869         switch (vif->type) {
3870         case NL80211_IFTYPE_ADHOC:
3871                 goto out;
3872         case NL80211_IFTYPE_MONITOR:
3873                 mvmvif->monitor_active = false;
3874                 mvmvif->ps_disabled = false;
3875                 iwl_mvm_rm_snif_sta(mvm, vif);
3876                 break;
3877         case NL80211_IFTYPE_AP:
3878                 /* This part is triggered only during CSA */
3879                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3880                         goto out;
3881
3882                 mvmvif->csa_countdown = false;
3883
3884                 /* Set CS bit on all the stations */
3885                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3886
3887                 /* Save blocked iface, the timeout is set on the next beacon */
3888                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3889
3890                 mvmvif->ap_ibss_active = false;
3891                 break;
3892         case NL80211_IFTYPE_STATION:
3893                 if (!switching_chanctx)
3894                         break;
3895
3896                 disabled_vif = vif;
3897
3898                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3899                 break;
3900         default:
3901                 break;
3902         }
3903
3904         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3905         iwl_mvm_binding_remove_vif(mvm, vif);
3906
3907 out:
3908         mvmvif->phy_ctxt = NULL;
3909         iwl_mvm_power_update_mac(mvm);
3910 }
3911
3912 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3913                                          struct ieee80211_vif *vif,
3914                                          struct ieee80211_chanctx_conf *ctx)
3915 {
3916         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3917
3918         mutex_lock(&mvm->mutex);
3919         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3920         mutex_unlock(&mvm->mutex);
3921 }
3922
3923 static int
3924 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3925                                 struct ieee80211_vif_chanctx_switch *vifs)
3926 {
3927         int ret;
3928
3929         mutex_lock(&mvm->mutex);
3930         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3931         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3932
3933         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3934         if (ret) {
3935                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3936                 goto out_reassign;
3937         }
3938
3939         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3940                                            true);
3941         if (ret) {
3942                 IWL_ERR(mvm,
3943                         "failed to assign new_ctx during channel switch\n");
3944                 goto out_remove;
3945         }
3946
3947         /* we don't support TDLS during DCM - can be caused by channel switch */
3948         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3949                 iwl_mvm_teardown_tdls_peers(mvm);
3950
3951         goto out;
3952
3953 out_remove:
3954         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3955
3956 out_reassign:
3957         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3958                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3959                 goto out_restart;
3960         }
3961
3962         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3963                                          true)) {
3964                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3965                 goto out_restart;
3966         }
3967
3968         goto out;
3969
3970 out_restart:
3971         /* things keep failing, better restart the hw */
3972         iwl_mvm_nic_restart(mvm, false);
3973
3974 out:
3975         mutex_unlock(&mvm->mutex);
3976
3977         return ret;
3978 }
3979
3980 static int
3981 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3982                                     struct ieee80211_vif_chanctx_switch *vifs)
3983 {
3984         int ret;
3985
3986         mutex_lock(&mvm->mutex);
3987         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3988
3989         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3990                                            true);
3991         if (ret) {
3992                 IWL_ERR(mvm,
3993                         "failed to assign new_ctx during channel switch\n");
3994                 goto out_reassign;
3995         }
3996
3997         goto out;
3998
3999 out_reassign:
4000         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4001                                          true)) {
4002                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4003                 goto out_restart;
4004         }
4005
4006         goto out;
4007
4008 out_restart:
4009         /* things keep failing, better restart the hw */
4010         iwl_mvm_nic_restart(mvm, false);
4011
4012 out:
4013         mutex_unlock(&mvm->mutex);
4014
4015         return ret;
4016 }
4017
4018 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
4019                                       struct ieee80211_vif_chanctx_switch *vifs,
4020                                       int n_vifs,
4021                                       enum ieee80211_chanctx_switch_mode mode)
4022 {
4023         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4024         int ret;
4025
4026         /* we only support a single-vif right now */
4027         if (n_vifs > 1)
4028                 return -EOPNOTSUPP;
4029
4030         switch (mode) {
4031         case CHANCTX_SWMODE_SWAP_CONTEXTS:
4032                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
4033                 break;
4034         case CHANCTX_SWMODE_REASSIGN_VIF:
4035                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4036                 break;
4037         default:
4038                 ret = -EOPNOTSUPP;
4039                 break;
4040         }
4041
4042         return ret;
4043 }
4044
4045 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
4046 {
4047         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4048
4049         return mvm->ibss_manager;
4050 }
4051
4052 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
4053                            struct ieee80211_sta *sta,
4054                            bool set)
4055 {
4056         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4057         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4058
4059         if (!mvm_sta || !mvm_sta->vif) {
4060                 IWL_ERR(mvm, "Station is not associated to a vif\n");
4061                 return -EINVAL;
4062         }
4063
4064         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
4065 }
4066
4067 #ifdef CONFIG_NL80211_TESTMODE
4068 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
4069         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
4070         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4071         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4072 };
4073
4074 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
4075                                       struct ieee80211_vif *vif,
4076                                       void *data, int len)
4077 {
4078         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
4079         int err;
4080         u32 noa_duration;
4081
4082         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
4083                         NULL);
4084         if (err)
4085                 return err;
4086
4087         if (!tb[IWL_MVM_TM_ATTR_CMD])
4088                 return -EINVAL;
4089
4090         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
4091         case IWL_MVM_TM_CMD_SET_NOA:
4092                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
4093                     !vif->bss_conf.enable_beacon ||
4094                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
4095                         return -EINVAL;
4096
4097                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
4098                 if (noa_duration >= vif->bss_conf.beacon_int)
4099                         return -EINVAL;
4100
4101                 mvm->noa_duration = noa_duration;
4102                 mvm->noa_vif = vif;
4103
4104                 return iwl_mvm_update_quotas(mvm, true, NULL);
4105         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
4106                 /* must be associated client vif - ignore authorized */
4107                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
4108                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
4109                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
4110                         return -EINVAL;
4111
4112                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
4113                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4114                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4115         }
4116
4117         return -EOPNOTSUPP;
4118 }
4119
4120 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
4121                                     struct ieee80211_vif *vif,
4122                                     void *data, int len)
4123 {
4124         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4125         int err;
4126
4127         mutex_lock(&mvm->mutex);
4128         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
4129         mutex_unlock(&mvm->mutex);
4130
4131         return err;
4132 }
4133 #endif
4134
4135 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
4136                                    struct ieee80211_vif *vif,
4137                                    struct ieee80211_channel_switch *chsw)
4138 {
4139         /* By implementing this operation, we prevent mac80211 from
4140          * starting its own channel switch timer, so that we can call
4141          * ieee80211_chswitch_done() ourselves at the right time
4142          * (which is when the absence time event starts).
4143          */
4144
4145         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
4146                            "dummy channel switch op\n");
4147 }
4148
4149 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
4150                                       struct ieee80211_vif *vif,
4151                                       struct ieee80211_channel_switch *chsw)
4152 {
4153         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4154         struct ieee80211_vif *csa_vif;
4155         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4156         u32 apply_time;
4157         int ret;
4158
4159         mutex_lock(&mvm->mutex);
4160
4161         mvmvif->csa_failed = false;
4162
4163         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4164                            chsw->chandef.center_freq1);
4165
4166         iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
4167                                        ieee80211_vif_to_wdev(vif),
4168                                        FW_DBG_TRIGGER_CHANNEL_SWITCH);
4169
4170         switch (vif->type) {
4171         case NL80211_IFTYPE_AP:
4172                 csa_vif =
4173                         rcu_dereference_protected(mvm->csa_vif,
4174                                                   lockdep_is_held(&mvm->mutex));
4175                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
4176                               "Another CSA is already in progress")) {
4177                         ret = -EBUSY;
4178                         goto out_unlock;
4179                 }
4180
4181                 /* we still didn't unblock tx. prevent new CS meanwhile */
4182                 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
4183                                               lockdep_is_held(&mvm->mutex))) {
4184                         ret = -EBUSY;
4185                         goto out_unlock;
4186                 }
4187
4188                 rcu_assign_pointer(mvm->csa_vif, vif);
4189
4190                 if (WARN_ONCE(mvmvif->csa_countdown,
4191                               "Previous CSA countdown didn't complete")) {
4192                         ret = -EBUSY;
4193                         goto out_unlock;
4194                 }
4195
4196                 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
4197
4198                 break;
4199         case NL80211_IFTYPE_STATION:
4200                 /* Schedule the time event to a bit before beacon 1,
4201                  * to make sure we're in the new channel when the
4202                  * GO/AP arrives. In case count <= 1 immediately schedule the
4203                  * TE (this might result with some packet loss or connection
4204                  * loss).
4205                  */
4206                 if (chsw->count <= 1)
4207                         apply_time = 0;
4208                 else
4209                         apply_time = chsw->device_timestamp +
4210                                 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
4211                                   IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4212
4213                 if (chsw->block_tx)
4214                         iwl_mvm_csa_client_absent(mvm, vif);
4215
4216                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4217                                             apply_time);
4218                 if (mvmvif->bf_data.bf_enabled) {
4219                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4220                         if (ret)
4221                                 goto out_unlock;
4222                 }
4223
4224                 break;
4225         default:
4226                 break;
4227         }
4228
4229         mvmvif->ps_disabled = true;
4230
4231         ret = iwl_mvm_power_update_ps(mvm);
4232         if (ret)
4233                 goto out_unlock;
4234
4235         /* we won't be on this channel any longer */
4236         iwl_mvm_teardown_tdls_peers(mvm);
4237
4238 out_unlock:
4239         mutex_unlock(&mvm->mutex);
4240
4241         return ret;
4242 }
4243
4244 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
4245                                        struct ieee80211_vif *vif)
4246 {
4247         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4248         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4249         int ret;
4250
4251         mutex_lock(&mvm->mutex);
4252
4253         if (mvmvif->csa_failed) {
4254                 mvmvif->csa_failed = false;
4255                 ret = -EIO;
4256                 goto out_unlock;
4257         }
4258
4259         if (vif->type == NL80211_IFTYPE_STATION) {
4260                 struct iwl_mvm_sta *mvmsta;
4261
4262                 mvmvif->csa_bcn_pending = false;
4263                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
4264                                                           mvmvif->ap_sta_id);
4265
4266                 if (WARN_ON(!mvmsta)) {
4267                         ret = -EIO;
4268                         goto out_unlock;
4269                 }
4270
4271                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
4272
4273                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4274
4275                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4276                 if (ret)
4277                         goto out_unlock;
4278
4279                 iwl_mvm_stop_session_protection(mvm, vif);
4280         }
4281
4282         mvmvif->ps_disabled = false;
4283
4284         ret = iwl_mvm_power_update_ps(mvm);
4285
4286 out_unlock:
4287         mutex_unlock(&mvm->mutex);
4288
4289         return ret;
4290 }
4291
4292 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4293 {
4294         int i;
4295
4296         if (!iwl_mvm_has_new_tx_api(mvm)) {
4297                 if (drop) {
4298                         mutex_lock(&mvm->mutex);
4299                         iwl_mvm_flush_tx_path(mvm,
4300                                 iwl_mvm_flushable_queues(mvm) & queues, 0);
4301                         mutex_unlock(&mvm->mutex);
4302                 } else {
4303                         iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4304                 }
4305                 return;
4306         }
4307
4308         mutex_lock(&mvm->mutex);
4309         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4310                 struct ieee80211_sta *sta;
4311
4312                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4313                                                 lockdep_is_held(&mvm->mutex));
4314                 if (IS_ERR_OR_NULL(sta))
4315                         continue;
4316
4317                 if (drop)
4318                         iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0);
4319                 else
4320                         iwl_mvm_wait_sta_queues_empty(mvm,
4321                                         iwl_mvm_sta_from_mac80211(sta));
4322         }
4323         mutex_unlock(&mvm->mutex);
4324 }
4325
4326 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4327                               struct ieee80211_vif *vif, u32 queues, bool drop)
4328 {
4329         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4330         struct iwl_mvm_vif *mvmvif;
4331         struct iwl_mvm_sta *mvmsta;
4332         struct ieee80211_sta *sta;
4333         int i;
4334         u32 msk = 0;
4335
4336         if (!vif) {
4337                 iwl_mvm_flush_no_vif(mvm, queues, drop);
4338                 return;
4339         }
4340
4341         if (vif->type != NL80211_IFTYPE_STATION)
4342                 return;
4343
4344         /* Make sure we're done with the deferred traffic before flushing */
4345         flush_work(&mvm->add_stream_wk);
4346
4347         mutex_lock(&mvm->mutex);
4348         mvmvif = iwl_mvm_vif_from_mac80211(vif);
4349
4350         /* flush the AP-station and all TDLS peers */
4351         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4352                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4353                                                 lockdep_is_held(&mvm->mutex));
4354                 if (IS_ERR_OR_NULL(sta))
4355                         continue;
4356
4357                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4358                 if (mvmsta->vif != vif)
4359                         continue;
4360
4361                 /* make sure only TDLS peers or the AP are flushed */
4362                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4363
4364                 if (drop) {
4365                         if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4366                                 IWL_ERR(mvm, "flush request fail\n");
4367                 } else {
4368                         msk |= mvmsta->tfd_queue_msk;
4369                         if (iwl_mvm_has_new_tx_api(mvm))
4370                                 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4371                 }
4372         }
4373
4374         mutex_unlock(&mvm->mutex);
4375
4376         /* this can take a while, and we may need/want other operations
4377          * to succeed while doing this, so do it without the mutex held
4378          */
4379         if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4380                 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4381 }
4382
4383 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4384                                   struct survey_info *survey)
4385 {
4386         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4387         int ret;
4388
4389         memset(survey, 0, sizeof(*survey));
4390
4391         /* only support global statistics right now */
4392         if (idx != 0)
4393                 return -ENOENT;
4394
4395         if (!fw_has_capa(&mvm->fw->ucode_capa,
4396                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4397                 return -ENOENT;
4398
4399         mutex_lock(&mvm->mutex);
4400
4401         if (iwl_mvm_firmware_running(mvm)) {
4402                 ret = iwl_mvm_request_statistics(mvm, false);
4403                 if (ret)
4404                         goto out;
4405         }
4406
4407         survey->filled = SURVEY_INFO_TIME |
4408                          SURVEY_INFO_TIME_RX |
4409                          SURVEY_INFO_TIME_TX |
4410                          SURVEY_INFO_TIME_SCAN;
4411         survey->time = mvm->accu_radio_stats.on_time_rf +
4412                        mvm->radio_stats.on_time_rf;
4413         do_div(survey->time, USEC_PER_MSEC);
4414
4415         survey->time_rx = mvm->accu_radio_stats.rx_time +
4416                           mvm->radio_stats.rx_time;
4417         do_div(survey->time_rx, USEC_PER_MSEC);
4418
4419         survey->time_tx = mvm->accu_radio_stats.tx_time +
4420                           mvm->radio_stats.tx_time;
4421         do_div(survey->time_tx, USEC_PER_MSEC);
4422
4423         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4424                             mvm->radio_stats.on_time_scan;
4425         do_div(survey->time_scan, USEC_PER_MSEC);
4426
4427         ret = 0;
4428  out:
4429         mutex_unlock(&mvm->mutex);
4430         return ret;
4431 }
4432
4433 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4434                                        struct ieee80211_vif *vif,
4435                                        struct ieee80211_sta *sta,
4436                                        struct station_info *sinfo)
4437 {
4438         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4439         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4440         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4441
4442         if (mvmsta->avg_energy) {
4443                 sinfo->signal_avg = mvmsta->avg_energy;
4444                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4445         }
4446
4447         if (!fw_has_capa(&mvm->fw->ucode_capa,
4448                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4449                 return;
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 };