1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 Intel Deutschland GmbH 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24 * USA 25 * 26 * The full GNU General Public License is included in this distribution 27 * in the file called COPYING. 28 * 29 * Contact Information: 30 * Intel Linux Wireless <linuxwifi@intel.com> 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32 * 33 * BSD LICENSE 34 * 35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 37 * All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 43 * * Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * * Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in 47 * the documentation and/or other materials provided with the 48 * distribution. 49 * * Neither the name Intel Corporation nor the names of its 50 * contributors may be used to endorse or promote products derived 51 * from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 * 65 *****************************************************************************/ 66 #include <linux/kernel.h> 67 #include <linux/slab.h> 68 #include <linux/skbuff.h> 69 #include <linux/netdevice.h> 70 #include <linux/etherdevice.h> 71 #include <linux/ip.h> 72 #include <linux/if_arp.h> 73 #include <linux/time.h> 74 #include <net/mac80211.h> 75 #include <net/ieee80211_radiotap.h> 76 #include <net/tcp.h> 77 78 #include "iwl-op-mode.h" 79 #include "iwl-io.h" 80 #include "mvm.h" 81 #include "sta.h" 82 #include "time-event.h" 83 #include "iwl-eeprom-parse.h" 84 #include "iwl-phy-db.h" 85 #include "testmode.h" 86 #include "iwl-fw-error-dump.h" 87 #include "iwl-prph.h" 88 #include "iwl-nvm-parse.h" 89 #include "fw-dbg.h" 90 91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 92 { 93 .max = 1, 94 .types = BIT(NL80211_IFTYPE_STATION), 95 }, 96 { 97 .max = 1, 98 .types = BIT(NL80211_IFTYPE_AP) | 99 BIT(NL80211_IFTYPE_P2P_CLIENT) | 100 BIT(NL80211_IFTYPE_P2P_GO), 101 }, 102 { 103 .max = 1, 104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 105 }, 106 }; 107 108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 109 { 110 .num_different_channels = 2, 111 .max_interfaces = 3, 112 .limits = iwl_mvm_limits, 113 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 114 }, 115 }; 116 117 #ifdef CONFIG_PM_SLEEP 118 static const struct nl80211_wowlan_tcp_data_token_feature 119 iwl_mvm_wowlan_tcp_token_feature = { 120 .min_len = 0, 121 .max_len = 255, 122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS, 123 }; 124 125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = { 126 .tok = &iwl_mvm_wowlan_tcp_token_feature, 127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN - 128 sizeof(struct ethhdr) - 129 sizeof(struct iphdr) - 130 sizeof(struct tcphdr), 131 .data_interval_max = 65535, /* __le16 in API */ 132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN - 133 sizeof(struct ethhdr) - 134 sizeof(struct iphdr) - 135 sizeof(struct tcphdr), 136 .seq = true, 137 }; 138 #endif 139 140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 141 /* 142 * Use the reserved field to indicate magic values. 143 * these values will only be used internally by the driver, 144 * and won't make it to the fw (reserved will be 0). 145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 146 * be the vif's ip address. in case there is not a single 147 * ip address (0, or more than 1), this attribute will 148 * be skipped. 149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 150 * the LSB bytes of the vif's mac address 151 */ 152 enum { 153 BC_FILTER_MAGIC_NONE = 0, 154 BC_FILTER_MAGIC_IP, 155 BC_FILTER_MAGIC_MAC, 156 }; 157 158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 159 { 160 /* arp */ 161 .discard = 0, 162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 163 .attrs = { 164 { 165 /* frame type - arp, hw type - ethernet */ 166 .offset_type = 167 BCAST_FILTER_OFFSET_PAYLOAD_START, 168 .offset = sizeof(rfc1042_header), 169 .val = cpu_to_be32(0x08060001), 170 .mask = cpu_to_be32(0xffffffff), 171 }, 172 { 173 /* arp dest ip */ 174 .offset_type = 175 BCAST_FILTER_OFFSET_PAYLOAD_START, 176 .offset = sizeof(rfc1042_header) + 2 + 177 sizeof(struct arphdr) + 178 ETH_ALEN + sizeof(__be32) + 179 ETH_ALEN, 180 .mask = cpu_to_be32(0xffffffff), 181 /* mark it as special field */ 182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 183 }, 184 }, 185 }, 186 { 187 /* dhcp offer bcast */ 188 .discard = 0, 189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 190 .attrs = { 191 { 192 /* udp dest port - 68 (bootp client)*/ 193 .offset_type = BCAST_FILTER_OFFSET_IP_END, 194 .offset = offsetof(struct udphdr, dest), 195 .val = cpu_to_be32(0x00440000), 196 .mask = cpu_to_be32(0xffff0000), 197 }, 198 { 199 /* dhcp - lsb bytes of client hw address */ 200 .offset_type = BCAST_FILTER_OFFSET_IP_END, 201 .offset = 38, 202 .mask = cpu_to_be32(0xffffffff), 203 /* mark it as special field */ 204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 205 }, 206 }, 207 }, 208 /* last filter must be empty */ 209 {}, 210 }; 211 #endif 212 213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 214 { 215 if (!iwl_mvm_is_d0i3_supported(mvm)) 216 return; 217 218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); 219 spin_lock_bh(&mvm->refs_lock); 220 mvm->refs[ref_type]++; 221 spin_unlock_bh(&mvm->refs_lock); 222 iwl_trans_ref(mvm->trans); 223 } 224 225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 226 { 227 if (!iwl_mvm_is_d0i3_supported(mvm)) 228 return; 229 230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); 231 spin_lock_bh(&mvm->refs_lock); 232 WARN_ON(!mvm->refs[ref_type]--); 233 spin_unlock_bh(&mvm->refs_lock); 234 iwl_trans_unref(mvm->trans); 235 } 236 237 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, 238 enum iwl_mvm_ref_type except_ref) 239 { 240 int i, j; 241 242 if (!iwl_mvm_is_d0i3_supported(mvm)) 243 return; 244 245 spin_lock_bh(&mvm->refs_lock); 246 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 247 if (except_ref == i || !mvm->refs[i]) 248 continue; 249 250 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", 251 i, mvm->refs[i]); 252 for (j = 0; j < mvm->refs[i]; j++) 253 iwl_trans_unref(mvm->trans); 254 mvm->refs[i] = 0; 255 } 256 spin_unlock_bh(&mvm->refs_lock); 257 } 258 259 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) 260 { 261 int i; 262 bool taken = false; 263 264 if (!iwl_mvm_is_d0i3_supported(mvm)) 265 return true; 266 267 spin_lock_bh(&mvm->refs_lock); 268 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 269 if (mvm->refs[i]) { 270 taken = true; 271 break; 272 } 273 } 274 spin_unlock_bh(&mvm->refs_lock); 275 276 return taken; 277 } 278 279 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 280 { 281 iwl_mvm_ref(mvm, ref_type); 282 283 if (!wait_event_timeout(mvm->d0i3_exit_waitq, 284 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), 285 HZ)) { 286 WARN_ON_ONCE(1); 287 iwl_mvm_unref(mvm, ref_type); 288 return -EIO; 289 } 290 291 return 0; 292 } 293 294 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 295 { 296 int i; 297 298 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 299 for (i = 0; i < NUM_PHY_CTX; i++) { 300 mvm->phy_ctxts[i].id = i; 301 mvm->phy_ctxts[i].ref = 0; 302 } 303 } 304 305 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 306 const char *alpha2, 307 enum iwl_mcc_source src_id, 308 bool *changed) 309 { 310 struct ieee80211_regdomain *regd = NULL; 311 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 313 struct iwl_mcc_update_resp *resp; 314 315 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 316 317 lockdep_assert_held(&mvm->mutex); 318 319 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 320 if (IS_ERR_OR_NULL(resp)) { 321 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 322 PTR_ERR_OR_ZERO(resp)); 323 goto out; 324 } 325 326 if (changed) 327 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE); 328 329 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 330 __le32_to_cpu(resp->n_channels), 331 resp->channels, 332 __le16_to_cpu(resp->mcc)); 333 /* Store the return source id */ 334 src_id = resp->source_id; 335 kfree(resp); 336 if (IS_ERR_OR_NULL(regd)) { 337 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 338 PTR_ERR_OR_ZERO(regd)); 339 goto out; 340 } 341 342 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 343 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 344 mvm->lar_regdom_set = true; 345 mvm->mcc_src = src_id; 346 347 out: 348 return regd; 349 } 350 351 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 352 { 353 bool changed; 354 struct ieee80211_regdomain *regd; 355 356 if (!iwl_mvm_is_lar_supported(mvm)) 357 return; 358 359 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 360 if (!IS_ERR_OR_NULL(regd)) { 361 /* only update the regulatory core if changed */ 362 if (changed) 363 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 364 365 kfree(regd); 366 } 367 } 368 369 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 370 bool *changed) 371 { 372 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 373 iwl_mvm_is_wifi_mcc_supported(mvm) ? 374 MCC_SOURCE_GET_CURRENT : 375 MCC_SOURCE_OLD_FW, changed); 376 } 377 378 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 379 { 380 enum iwl_mcc_source used_src; 381 struct ieee80211_regdomain *regd; 382 int ret; 383 bool changed; 384 const struct ieee80211_regdomain *r = 385 rtnl_dereference(mvm->hw->wiphy->regd); 386 387 if (!r) 388 return -ENOENT; 389 390 /* save the last source in case we overwrite it below */ 391 used_src = mvm->mcc_src; 392 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 393 /* Notify the firmware we support wifi location updates */ 394 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 395 if (!IS_ERR_OR_NULL(regd)) 396 kfree(regd); 397 } 398 399 /* Now set our last stored MCC and source */ 400 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 401 &changed); 402 if (IS_ERR_OR_NULL(regd)) 403 return -EIO; 404 405 /* update cfg80211 if the regdomain was changed */ 406 if (changed) 407 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 408 else 409 ret = 0; 410 411 kfree(regd); 412 return ret; 413 } 414 415 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 416 { 417 struct ieee80211_hw *hw = mvm->hw; 418 int num_mac, ret, i; 419 static const u32 mvm_ciphers[] = { 420 WLAN_CIPHER_SUITE_WEP40, 421 WLAN_CIPHER_SUITE_WEP104, 422 WLAN_CIPHER_SUITE_TKIP, 423 WLAN_CIPHER_SUITE_CCMP, 424 }; 425 426 /* Tell mac80211 our characteristics */ 427 ieee80211_hw_set(hw, SIGNAL_DBM); 428 ieee80211_hw_set(hw, SPECTRUM_MGMT); 429 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 430 ieee80211_hw_set(hw, QUEUE_CONTROL); 431 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 432 ieee80211_hw_set(hw, SUPPORTS_PS); 433 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 434 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 435 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 436 ieee80211_hw_set(hw, CONNECTION_MONITOR); 437 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 438 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 439 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 440 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 441 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 442 443 if (mvm->trans->max_skb_frags) 444 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 445 446 hw->queues = mvm->first_agg_queue; 447 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 448 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 449 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 450 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 451 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 452 hw->rate_control_algorithm = "iwl-mvm-rs"; 453 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 454 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 455 456 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2); 457 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 458 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 459 hw->wiphy->cipher_suites = mvm->ciphers; 460 461 /* 462 * Enable 11w if advertised by firmware and software crypto 463 * is not enabled (as the firmware will interpret some mgmt 464 * packets, so enabling it with software crypto isn't safe) 465 */ 466 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP && 467 !iwlwifi_mod_params.sw_crypto) { 468 ieee80211_hw_set(hw, MFP_CAPABLE); 469 mvm->ciphers[hw->wiphy->n_cipher_suites] = 470 WLAN_CIPHER_SUITE_AES_CMAC; 471 hw->wiphy->n_cipher_suites++; 472 } 473 474 /* currently FW API supports only one optional cipher scheme */ 475 if (mvm->fw->cs[0].cipher) { 476 mvm->hw->n_cipher_schemes = 1; 477 mvm->hw->cipher_schemes = &mvm->fw->cs[0]; 478 mvm->ciphers[hw->wiphy->n_cipher_suites] = 479 mvm->fw->cs[0].cipher; 480 hw->wiphy->n_cipher_suites++; 481 } 482 483 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 484 hw->wiphy->features |= 485 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 486 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 487 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 488 489 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 490 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 491 hw->chanctx_data_size = sizeof(u16); 492 493 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 494 BIT(NL80211_IFTYPE_P2P_CLIENT) | 495 BIT(NL80211_IFTYPE_AP) | 496 BIT(NL80211_IFTYPE_P2P_GO) | 497 BIT(NL80211_IFTYPE_P2P_DEVICE) | 498 BIT(NL80211_IFTYPE_ADHOC); 499 500 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 501 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 502 if (iwl_mvm_is_lar_supported(mvm)) 503 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 504 else 505 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 506 REGULATORY_DISABLE_BEACON_HINTS; 507 508 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD) 509 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 510 511 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 512 513 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 514 hw->wiphy->n_iface_combinations = 515 ARRAY_SIZE(iwl_mvm_iface_combinations); 516 517 hw->wiphy->max_remain_on_channel_duration = 10000; 518 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 519 /* we can compensate an offset of up to 3 channels = 15 MHz */ 520 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5; 521 522 /* Extract MAC address */ 523 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 524 hw->wiphy->addresses = mvm->addresses; 525 hw->wiphy->n_addresses = 1; 526 527 /* Extract additional MAC addresses if available */ 528 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 529 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 530 531 for (i = 1; i < num_mac; i++) { 532 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 533 ETH_ALEN); 534 mvm->addresses[i].addr[5]++; 535 hw->wiphy->n_addresses++; 536 } 537 538 iwl_mvm_reset_phy_ctxts(mvm); 539 540 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 541 542 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 543 544 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 545 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 546 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 547 548 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 549 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 550 else 551 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 552 553 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels) 554 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = 555 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; 556 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) { 557 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = 558 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; 559 560 if (fw_has_capa(&mvm->fw->ucode_capa, 561 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 562 fw_has_api(&mvm->fw->ucode_capa, 563 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 564 hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |= 565 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 566 } 567 568 hw->wiphy->hw_version = mvm->trans->hw_id; 569 570 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 571 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 572 else 573 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 574 575 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; 576 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 577 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 578 /* we create the 802.11 header and zero length SSID IE. */ 579 hw->wiphy->max_sched_scan_ie_len = 580 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 581 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 582 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 583 584 /* 585 * the firmware uses u8 for num of iterations, but 0xff is saved for 586 * infinite loop, so the maximum number of iterations is actually 254. 587 */ 588 hw->wiphy->max_sched_scan_plan_iterations = 254; 589 590 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 591 NL80211_FEATURE_LOW_PRIORITY_SCAN | 592 NL80211_FEATURE_P2P_GO_OPPPS | 593 NL80211_FEATURE_DYNAMIC_SMPS | 594 NL80211_FEATURE_STATIC_SMPS | 595 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 596 597 if (fw_has_capa(&mvm->fw->ucode_capa, 598 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 599 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 600 if (fw_has_capa(&mvm->fw->ucode_capa, 601 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 602 hw->wiphy->features |= NL80211_FEATURE_QUIET; 603 604 if (fw_has_capa(&mvm->fw->ucode_capa, 605 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 606 hw->wiphy->features |= 607 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 608 609 if (fw_has_capa(&mvm->fw->ucode_capa, 610 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 611 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 612 613 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 614 615 #ifdef CONFIG_PM_SLEEP 616 if (iwl_mvm_is_d0i3_supported(mvm) && 617 device_can_wakeup(mvm->trans->dev)) { 618 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 619 hw->wiphy->wowlan = &mvm->wowlan; 620 } 621 622 if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len && 623 mvm->trans->ops->d3_suspend && 624 mvm->trans->ops->d3_resume && 625 device_can_wakeup(mvm->trans->dev)) { 626 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 627 WIPHY_WOWLAN_DISCONNECT | 628 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 629 WIPHY_WOWLAN_RFKILL_RELEASE | 630 WIPHY_WOWLAN_NET_DETECT; 631 if (!iwlwifi_mod_params.sw_crypto) 632 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 633 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 634 WIPHY_WOWLAN_4WAY_HANDSHAKE; 635 636 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 637 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 638 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 639 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 640 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support; 641 hw->wiphy->wowlan = &mvm->wowlan; 642 } 643 #endif 644 645 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 646 /* assign default bcast filtering configuration */ 647 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 648 #endif 649 650 ret = iwl_mvm_leds_init(mvm); 651 if (ret) 652 return ret; 653 654 if (fw_has_capa(&mvm->fw->ucode_capa, 655 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 656 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 657 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 658 ieee80211_hw_set(hw, TDLS_WIDER_BW); 659 } 660 661 if (fw_has_capa(&mvm->fw->ucode_capa, 662 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 663 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 664 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 665 } 666 667 hw->netdev_features |= mvm->cfg->features; 668 if (!iwl_mvm_is_csum_supported(mvm)) 669 hw->netdev_features &= ~NETIF_F_RXCSUM; 670 671 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 672 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | 673 NETIF_F_TSO | NETIF_F_TSO6; 674 675 ret = ieee80211_register_hw(mvm->hw); 676 if (ret) 677 iwl_mvm_leds_exit(mvm); 678 679 return ret; 680 } 681 682 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 683 struct ieee80211_sta *sta, 684 struct sk_buff *skb) 685 { 686 struct iwl_mvm_sta *mvmsta; 687 bool defer = false; 688 689 /* 690 * double check the IN_D0I3 flag both before and after 691 * taking the spinlock, in order to prevent taking 692 * the spinlock when not needed. 693 */ 694 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 695 return false; 696 697 spin_lock(&mvm->d0i3_tx_lock); 698 /* 699 * testing the flag again ensures the skb dequeue 700 * loop (on d0i3 exit) hasn't run yet. 701 */ 702 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 703 goto out; 704 705 mvmsta = iwl_mvm_sta_from_mac80211(sta); 706 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT || 707 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 708 goto out; 709 710 __skb_queue_tail(&mvm->d0i3_tx, skb); 711 ieee80211_stop_queues(mvm->hw); 712 713 /* trigger wakeup */ 714 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 715 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 716 717 defer = true; 718 out: 719 spin_unlock(&mvm->d0i3_tx_lock); 720 return defer; 721 } 722 723 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 724 struct ieee80211_tx_control *control, 725 struct sk_buff *skb) 726 { 727 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 728 struct ieee80211_sta *sta = control->sta; 729 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 730 struct ieee80211_hdr *hdr = (void *)skb->data; 731 732 if (iwl_mvm_is_radio_killed(mvm)) { 733 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 734 goto drop; 735 } 736 737 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && 738 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 739 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 740 goto drop; 741 742 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */ 743 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER && 744 ieee80211_is_mgmt(hdr->frame_control) && 745 !ieee80211_is_deauth(hdr->frame_control) && 746 !ieee80211_is_disassoc(hdr->frame_control) && 747 !ieee80211_is_action(hdr->frame_control))) 748 sta = NULL; 749 750 if (sta) { 751 if (iwl_mvm_defer_tx(mvm, sta, skb)) 752 return; 753 if (iwl_mvm_tx_skb(mvm, skb, sta)) 754 goto drop; 755 return; 756 } 757 758 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 759 goto drop; 760 return; 761 drop: 762 ieee80211_free_txskb(hw, skb); 763 } 764 765 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) 766 { 767 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) 768 return false; 769 return true; 770 } 771 772 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) 773 { 774 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) 775 return false; 776 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) 777 return true; 778 779 /* enabled by default */ 780 return true; 781 } 782 783 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 784 do { \ 785 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 786 break; \ 787 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \ 788 } while (0) 789 790 static void 791 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 792 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 793 enum ieee80211_ampdu_mlme_action action) 794 { 795 struct iwl_fw_dbg_trigger_tlv *trig; 796 struct iwl_fw_dbg_trigger_ba *ba_trig; 797 798 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 799 return; 800 801 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 802 ba_trig = (void *)trig->data; 803 804 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 805 return; 806 807 switch (action) { 808 case IEEE80211_AMPDU_TX_OPERATIONAL: { 809 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 810 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 811 812 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 813 "TX AGG START: MAC %pM tid %d ssn %d\n", 814 sta->addr, tid, tid_data->ssn); 815 break; 816 } 817 case IEEE80211_AMPDU_TX_STOP_CONT: 818 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 819 "TX AGG STOP: MAC %pM tid %d\n", 820 sta->addr, tid); 821 break; 822 case IEEE80211_AMPDU_RX_START: 823 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 824 "RX AGG START: MAC %pM tid %d ssn %d\n", 825 sta->addr, tid, rx_ba_ssn); 826 break; 827 case IEEE80211_AMPDU_RX_STOP: 828 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 829 "RX AGG STOP: MAC %pM tid %d\n", 830 sta->addr, tid); 831 break; 832 default: 833 break; 834 } 835 } 836 837 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 838 struct ieee80211_vif *vif, 839 struct ieee80211_ampdu_params *params) 840 { 841 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 842 int ret; 843 bool tx_agg_ref = false; 844 struct ieee80211_sta *sta = params->sta; 845 enum ieee80211_ampdu_mlme_action action = params->action; 846 u16 tid = params->tid; 847 u16 *ssn = ¶ms->ssn; 848 u8 buf_size = params->buf_size; 849 bool amsdu = params->amsdu; 850 851 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 852 sta->addr, tid, action); 853 854 if (!(mvm->nvm_data->sku_cap_11n_enable)) 855 return -EACCES; 856 857 /* return from D0i3 before starting a new Tx aggregation */ 858 switch (action) { 859 case IEEE80211_AMPDU_TX_START: 860 case IEEE80211_AMPDU_TX_STOP_CONT: 861 case IEEE80211_AMPDU_TX_STOP_FLUSH: 862 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 863 case IEEE80211_AMPDU_TX_OPERATIONAL: 864 /* 865 * for tx start, wait synchronously until D0i3 exit to 866 * get the correct sequence number for the tid. 867 * additionally, some other ampdu actions use direct 868 * target access, which is not handled automatically 869 * by the trans layer (unlike commands), so wait for 870 * d0i3 exit in these cases as well. 871 */ 872 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 873 if (ret) 874 return ret; 875 876 tx_agg_ref = true; 877 break; 878 default: 879 break; 880 } 881 882 mutex_lock(&mvm->mutex); 883 884 switch (action) { 885 case IEEE80211_AMPDU_RX_START: 886 if (!iwl_enable_rx_ampdu(mvm->cfg)) { 887 ret = -EINVAL; 888 break; 889 } 890 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size); 891 break; 892 case IEEE80211_AMPDU_RX_STOP: 893 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size); 894 break; 895 case IEEE80211_AMPDU_TX_START: 896 if (!iwl_enable_tx_ampdu(mvm->cfg)) { 897 ret = -EINVAL; 898 break; 899 } 900 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 901 break; 902 case IEEE80211_AMPDU_TX_STOP_CONT: 903 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 904 break; 905 case IEEE80211_AMPDU_TX_STOP_FLUSH: 906 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 907 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 908 break; 909 case IEEE80211_AMPDU_TX_OPERATIONAL: 910 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 911 buf_size, amsdu); 912 break; 913 default: 914 WARN_ON_ONCE(1); 915 ret = -EINVAL; 916 break; 917 } 918 919 if (!ret) { 920 u16 rx_ba_ssn = 0; 921 922 if (action == IEEE80211_AMPDU_RX_START) 923 rx_ba_ssn = *ssn; 924 925 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 926 rx_ba_ssn, action); 927 } 928 mutex_unlock(&mvm->mutex); 929 930 /* 931 * If the tid is marked as started, we won't use it for offloaded 932 * traffic on the next D0i3 entry. It's safe to unref. 933 */ 934 if (tx_agg_ref) 935 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 936 937 return ret; 938 } 939 940 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 941 struct ieee80211_vif *vif) 942 { 943 struct iwl_mvm *mvm = data; 944 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 945 946 mvmvif->uploaded = false; 947 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 948 949 spin_lock_bh(&mvm->time_event_lock); 950 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 951 spin_unlock_bh(&mvm->time_event_lock); 952 953 mvmvif->phy_ctxt = NULL; 954 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 955 } 956 957 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 958 { 959 /* clear the D3 reconfig, we only need it to avoid dumping a 960 * firmware coredump on reconfiguration, we shouldn't do that 961 * on D3->D0 transition 962 */ 963 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) { 964 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert; 965 iwl_mvm_fw_error_dump(mvm); 966 } 967 968 /* cleanup all stale references (scan, roc), but keep the 969 * ucode_down ref until reconfig is complete 970 */ 971 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 972 973 iwl_mvm_stop_device(mvm); 974 975 mvm->scan_status = 0; 976 mvm->ps_disabled = false; 977 mvm->calibrating = false; 978 979 /* just in case one was running */ 980 iwl_mvm_cleanup_roc_te(mvm); 981 ieee80211_remain_on_channel_expired(mvm->hw); 982 983 /* 984 * cleanup all interfaces, even inactive ones, as some might have 985 * gone down during the HW restart 986 */ 987 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 988 989 mvm->p2p_device_vif = NULL; 990 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 991 992 iwl_mvm_reset_phy_ctxts(mvm); 993 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 994 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); 995 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained)); 996 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 997 memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old)); 998 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 999 memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old)); 1000 memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk)); 1001 memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk)); 1002 1003 ieee80211_wake_queues(mvm->hw); 1004 1005 /* clear any stale d0i3 state */ 1006 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1007 1008 mvm->vif_count = 0; 1009 mvm->rx_ba_sessions = 0; 1010 mvm->fw_dbg_conf = FW_DBG_INVALID; 1011 1012 /* keep statistics ticking */ 1013 iwl_mvm_accu_radio_stats(mvm); 1014 } 1015 1016 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1017 { 1018 int ret; 1019 1020 lockdep_assert_held(&mvm->mutex); 1021 1022 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1023 /* Clean up some internal and mac80211 state on restart */ 1024 iwl_mvm_restart_cleanup(mvm); 1025 } else { 1026 /* Hold the reference to prevent runtime suspend while 1027 * the start procedure runs. It's a bit confusing 1028 * that the UCODE_DOWN reference is taken, but it just 1029 * means "UCODE is not UP yet". ( TODO: rename this 1030 * reference). 1031 */ 1032 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1033 } 1034 ret = iwl_mvm_up(mvm); 1035 1036 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1037 /* Something went wrong - we need to finish some cleanup 1038 * that normally iwl_mvm_mac_restart_complete() below 1039 * would do. 1040 */ 1041 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1042 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1043 } 1044 1045 return ret; 1046 } 1047 1048 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1049 { 1050 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1051 int ret; 1052 1053 /* Some hw restart cleanups must not hold the mutex */ 1054 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1055 /* 1056 * Make sure we are out of d0i3. This is needed 1057 * to make sure the reference accounting is correct 1058 * (and there is no stale d0i3_exit_work). 1059 */ 1060 wait_event_timeout(mvm->d0i3_exit_waitq, 1061 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1062 &mvm->status), 1063 HZ); 1064 } 1065 1066 mutex_lock(&mvm->mutex); 1067 ret = __iwl_mvm_mac_start(mvm); 1068 mutex_unlock(&mvm->mutex); 1069 1070 return ret; 1071 } 1072 1073 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1074 { 1075 int ret; 1076 1077 mutex_lock(&mvm->mutex); 1078 1079 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1080 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1081 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1082 if (ret) 1083 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1084 ret); 1085 1086 /* allow transport/FW low power modes */ 1087 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1088 1089 /* 1090 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1091 * of packets the FW sent out, so we must reconnect. 1092 */ 1093 iwl_mvm_teardown_tdls_peers(mvm); 1094 1095 mutex_unlock(&mvm->mutex); 1096 } 1097 1098 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1099 { 1100 if (iwl_mvm_is_d0i3_supported(mvm) && 1101 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1102 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1103 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1104 &mvm->status), 1105 HZ), 1106 "D0i3 exit on resume timed out\n"); 1107 } 1108 1109 static void 1110 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1111 enum ieee80211_reconfig_type reconfig_type) 1112 { 1113 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1114 1115 switch (reconfig_type) { 1116 case IEEE80211_RECONFIG_TYPE_RESTART: 1117 iwl_mvm_restart_complete(mvm); 1118 break; 1119 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1120 iwl_mvm_resume_complete(mvm); 1121 break; 1122 } 1123 } 1124 1125 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1126 { 1127 lockdep_assert_held(&mvm->mutex); 1128 1129 /* firmware counters are obviously reset now, but we shouldn't 1130 * partially track so also clear the fw_reset_accu counters. 1131 */ 1132 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1133 1134 /* async_handlers_wk is now blocked */ 1135 1136 /* 1137 * The work item could be running or queued if the 1138 * ROC time event stops just as we get here. 1139 */ 1140 flush_work(&mvm->roc_done_wk); 1141 1142 iwl_mvm_stop_device(mvm); 1143 1144 iwl_mvm_async_handlers_purge(mvm); 1145 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1146 1147 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1148 iwl_mvm_del_aux_sta(mvm); 1149 1150 /* 1151 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() 1152 * won't be called in this case). 1153 * But make sure to cleanup interfaces that have gone down before/during 1154 * HW restart was requested. 1155 */ 1156 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1157 ieee80211_iterate_interfaces(mvm->hw, 0, 1158 iwl_mvm_cleanup_iterator, mvm); 1159 1160 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1161 * make sure there's nothing left there and warn if any is found. 1162 */ 1163 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1164 int i; 1165 1166 for (i = 0; i < mvm->max_scans; i++) { 1167 if (WARN_ONCE(mvm->scan_uid_status[i], 1168 "UMAC scan UID %d status was not cleaned\n", 1169 i)) 1170 mvm->scan_uid_status[i] = 0; 1171 } 1172 } 1173 } 1174 1175 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1176 { 1177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1178 1179 flush_work(&mvm->d0i3_exit_work); 1180 flush_work(&mvm->async_handlers_wk); 1181 cancel_delayed_work_sync(&mvm->fw_dump_wk); 1182 iwl_mvm_free_fw_dump_desc(mvm); 1183 1184 mutex_lock(&mvm->mutex); 1185 __iwl_mvm_mac_stop(mvm); 1186 mutex_unlock(&mvm->mutex); 1187 1188 /* 1189 * The worker might have been waiting for the mutex, let it run and 1190 * discover that its list is now empty. 1191 */ 1192 cancel_work_sync(&mvm->async_handlers_wk); 1193 } 1194 1195 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1196 { 1197 u16 i; 1198 1199 lockdep_assert_held(&mvm->mutex); 1200 1201 for (i = 0; i < NUM_PHY_CTX; i++) 1202 if (!mvm->phy_ctxts[i].ref) 1203 return &mvm->phy_ctxts[i]; 1204 1205 IWL_ERR(mvm, "No available PHY context\n"); 1206 return NULL; 1207 } 1208 1209 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1210 s16 tx_power) 1211 { 1212 struct iwl_dev_tx_power_cmd cmd = { 1213 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1214 .v2.mac_context_id = 1215 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1216 .v2.pwr_restriction = cpu_to_le16(8 * tx_power), 1217 }; 1218 int len = sizeof(cmd); 1219 1220 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1221 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1222 1223 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN)) 1224 len = sizeof(cmd.v2); 1225 1226 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1227 } 1228 1229 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1230 struct ieee80211_vif *vif) 1231 { 1232 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1233 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1234 int ret; 1235 1236 mvmvif->mvm = mvm; 1237 1238 /* 1239 * make sure D0i3 exit is completed, otherwise a target access 1240 * during tx queue configuration could be done when still in 1241 * D0i3 state. 1242 */ 1243 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1244 if (ret) 1245 return ret; 1246 1247 /* 1248 * Not much to do here. The stack will not allow interface 1249 * types or combinations that we didn't advertise, so we 1250 * don't really have to check the types. 1251 */ 1252 1253 mutex_lock(&mvm->mutex); 1254 1255 /* make sure that beacon statistics don't go backwards with FW reset */ 1256 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1257 mvmvif->beacon_stats.accu_num_beacons += 1258 mvmvif->beacon_stats.num_beacons; 1259 1260 /* Allocate resources for the MAC context, and add it to the fw */ 1261 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1262 if (ret) 1263 goto out_unlock; 1264 1265 /* Counting number of interfaces is needed for legacy PM */ 1266 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1267 mvm->vif_count++; 1268 1269 /* 1270 * The AP binding flow can be done only after the beacon 1271 * template is configured (which happens only in the mac80211 1272 * start_ap() flow), and adding the broadcast station can happen 1273 * only after the binding. 1274 * In addition, since modifying the MAC before adding a bcast 1275 * station is not allowed by the FW, delay the adding of MAC context to 1276 * the point where we can also add the bcast station. 1277 * In short: there's not much we can do at this point, other than 1278 * allocating resources :) 1279 */ 1280 if (vif->type == NL80211_IFTYPE_AP || 1281 vif->type == NL80211_IFTYPE_ADHOC) { 1282 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1283 if (ret) { 1284 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1285 goto out_release; 1286 } 1287 1288 iwl_mvm_vif_dbgfs_register(mvm, vif); 1289 goto out_unlock; 1290 } 1291 1292 mvmvif->features |= hw->netdev_features; 1293 1294 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1295 if (ret) 1296 goto out_release; 1297 1298 ret = iwl_mvm_power_update_mac(mvm); 1299 if (ret) 1300 goto out_remove_mac; 1301 1302 /* beacon filtering */ 1303 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1304 if (ret) 1305 goto out_remove_mac; 1306 1307 if (!mvm->bf_allowed_vif && 1308 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1309 mvm->bf_allowed_vif = mvmvif; 1310 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1311 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1312 } 1313 1314 /* 1315 * P2P_DEVICE interface does not have a channel context assigned to it, 1316 * so a dedicated PHY context is allocated to it and the corresponding 1317 * MAC context is bound to it at this stage. 1318 */ 1319 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1320 1321 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1322 if (!mvmvif->phy_ctxt) { 1323 ret = -ENOSPC; 1324 goto out_free_bf; 1325 } 1326 1327 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1328 ret = iwl_mvm_binding_add_vif(mvm, vif); 1329 if (ret) 1330 goto out_unref_phy; 1331 1332 ret = iwl_mvm_add_bcast_sta(mvm, vif); 1333 if (ret) 1334 goto out_unbind; 1335 1336 /* Save a pointer to p2p device vif, so it can later be used to 1337 * update the p2p device MAC when a GO is started/stopped */ 1338 mvm->p2p_device_vif = vif; 1339 } 1340 1341 iwl_mvm_vif_dbgfs_register(mvm, vif); 1342 goto out_unlock; 1343 1344 out_unbind: 1345 iwl_mvm_binding_remove_vif(mvm, vif); 1346 out_unref_phy: 1347 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1348 out_free_bf: 1349 if (mvm->bf_allowed_vif == mvmvif) { 1350 mvm->bf_allowed_vif = NULL; 1351 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1352 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1353 } 1354 out_remove_mac: 1355 mvmvif->phy_ctxt = NULL; 1356 iwl_mvm_mac_ctxt_remove(mvm, vif); 1357 out_release: 1358 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1359 mvm->vif_count--; 1360 1361 iwl_mvm_mac_ctxt_release(mvm, vif); 1362 out_unlock: 1363 mutex_unlock(&mvm->mutex); 1364 1365 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1366 1367 return ret; 1368 } 1369 1370 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1371 struct ieee80211_vif *vif) 1372 { 1373 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif); 1374 1375 if (tfd_msk) { 1376 /* 1377 * mac80211 first removes all the stations of the vif and 1378 * then removes the vif. When it removes a station it also 1379 * flushes the AMPDU session. So by now, all the AMPDU sessions 1380 * of all the stations of this vif are closed, and the queues 1381 * of these AMPDU sessions are properly closed. 1382 * We still need to take care of the shared queues of the vif. 1383 * Flush them here. 1384 */ 1385 mutex_lock(&mvm->mutex); 1386 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0); 1387 mutex_unlock(&mvm->mutex); 1388 1389 /* 1390 * There are transports that buffer a few frames in the host. 1391 * For these, the flush above isn't enough since while we were 1392 * flushing, the transport might have sent more frames to the 1393 * device. To solve this, wait here until the transport is 1394 * empty. Technically, this could have replaced the flush 1395 * above, but flush is much faster than draining. So flush 1396 * first, and drain to make sure we have no frames in the 1397 * transport anymore. 1398 * If a station still had frames on the shared queues, it is 1399 * already marked as draining, so to complete the draining, we 1400 * just need to wait until the transport is empty. 1401 */ 1402 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk); 1403 } 1404 1405 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1406 /* 1407 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1408 * We assume here that all the packets sent to the OFFCHANNEL 1409 * queue are sent in ROC session. 1410 */ 1411 flush_work(&mvm->roc_done_wk); 1412 } else { 1413 /* 1414 * By now, all the AC queues are empty. The AGG queues are 1415 * empty too. We already got all the Tx responses for all the 1416 * packets in the queues. The drain work can have been 1417 * triggered. Flush it. 1418 */ 1419 flush_work(&mvm->sta_drained_wk); 1420 } 1421 } 1422 1423 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1424 struct ieee80211_vif *vif) 1425 { 1426 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1427 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1428 1429 iwl_mvm_prepare_mac_removal(mvm, vif); 1430 1431 mutex_lock(&mvm->mutex); 1432 1433 if (mvm->bf_allowed_vif == mvmvif) { 1434 mvm->bf_allowed_vif = NULL; 1435 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1436 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1437 } 1438 1439 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1440 1441 /* 1442 * For AP/GO interface, the tear down of the resources allocated to the 1443 * interface is be handled as part of the stop_ap flow. 1444 */ 1445 if (vif->type == NL80211_IFTYPE_AP || 1446 vif->type == NL80211_IFTYPE_ADHOC) { 1447 #ifdef CONFIG_NL80211_TESTMODE 1448 if (vif == mvm->noa_vif) { 1449 mvm->noa_vif = NULL; 1450 mvm->noa_duration = 0; 1451 } 1452 #endif 1453 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1454 goto out_release; 1455 } 1456 1457 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1458 mvm->p2p_device_vif = NULL; 1459 iwl_mvm_rm_bcast_sta(mvm, vif); 1460 iwl_mvm_binding_remove_vif(mvm, vif); 1461 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1462 mvmvif->phy_ctxt = NULL; 1463 } 1464 1465 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1466 mvm->vif_count--; 1467 1468 iwl_mvm_power_update_mac(mvm); 1469 iwl_mvm_mac_ctxt_remove(mvm, vif); 1470 1471 out_release: 1472 iwl_mvm_mac_ctxt_release(mvm, vif); 1473 mutex_unlock(&mvm->mutex); 1474 } 1475 1476 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1477 { 1478 return 0; 1479 } 1480 1481 struct iwl_mvm_mc_iter_data { 1482 struct iwl_mvm *mvm; 1483 int port_id; 1484 }; 1485 1486 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1487 struct ieee80211_vif *vif) 1488 { 1489 struct iwl_mvm_mc_iter_data *data = _data; 1490 struct iwl_mvm *mvm = data->mvm; 1491 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1492 int ret, len; 1493 1494 /* if we don't have free ports, mcast frames will be dropped */ 1495 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1496 return; 1497 1498 if (vif->type != NL80211_IFTYPE_STATION || 1499 !vif->bss_conf.assoc) 1500 return; 1501 1502 cmd->port_id = data->port_id++; 1503 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1504 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1505 1506 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd); 1507 if (ret) 1508 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1509 } 1510 1511 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1512 { 1513 struct iwl_mvm_mc_iter_data iter_data = { 1514 .mvm = mvm, 1515 }; 1516 1517 lockdep_assert_held(&mvm->mutex); 1518 1519 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1520 return; 1521 1522 ieee80211_iterate_active_interfaces_atomic( 1523 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1524 iwl_mvm_mc_iface_iterator, &iter_data); 1525 } 1526 1527 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1528 struct netdev_hw_addr_list *mc_list) 1529 { 1530 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1531 struct iwl_mcast_filter_cmd *cmd; 1532 struct netdev_hw_addr *addr; 1533 int addr_count; 1534 bool pass_all; 1535 int len; 1536 1537 addr_count = netdev_hw_addr_list_count(mc_list); 1538 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1539 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1540 if (pass_all) 1541 addr_count = 0; 1542 1543 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1544 cmd = kzalloc(len, GFP_ATOMIC); 1545 if (!cmd) 1546 return 0; 1547 1548 if (pass_all) { 1549 cmd->pass_all = 1; 1550 return (u64)(unsigned long)cmd; 1551 } 1552 1553 netdev_hw_addr_list_for_each(addr, mc_list) { 1554 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1555 cmd->count, addr->addr); 1556 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1557 addr->addr, ETH_ALEN); 1558 cmd->count++; 1559 } 1560 1561 return (u64)(unsigned long)cmd; 1562 } 1563 1564 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1565 unsigned int changed_flags, 1566 unsigned int *total_flags, 1567 u64 multicast) 1568 { 1569 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1570 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1571 1572 mutex_lock(&mvm->mutex); 1573 1574 /* replace previous configuration */ 1575 kfree(mvm->mcast_filter_cmd); 1576 mvm->mcast_filter_cmd = cmd; 1577 1578 if (!cmd) 1579 goto out; 1580 1581 iwl_mvm_recalc_multicast(mvm); 1582 out: 1583 mutex_unlock(&mvm->mutex); 1584 *total_flags = 0; 1585 } 1586 1587 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1588 struct ieee80211_vif *vif, 1589 unsigned int filter_flags, 1590 unsigned int changed_flags) 1591 { 1592 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1593 1594 /* We support only filter for probe requests */ 1595 if (!(changed_flags & FIF_PROBE_REQ)) 1596 return; 1597 1598 /* Supported only for p2p client interfaces */ 1599 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1600 !vif->p2p) 1601 return; 1602 1603 mutex_lock(&mvm->mutex); 1604 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1605 mutex_unlock(&mvm->mutex); 1606 } 1607 1608 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1609 struct iwl_bcast_iter_data { 1610 struct iwl_mvm *mvm; 1611 struct iwl_bcast_filter_cmd *cmd; 1612 u8 current_filter; 1613 }; 1614 1615 static void 1616 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1617 const struct iwl_fw_bcast_filter *in_filter, 1618 struct iwl_fw_bcast_filter *out_filter) 1619 { 1620 struct iwl_fw_bcast_filter_attr *attr; 1621 int i; 1622 1623 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1624 1625 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1626 attr = &out_filter->attrs[i]; 1627 1628 if (!attr->mask) 1629 break; 1630 1631 switch (attr->reserved1) { 1632 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1633 if (vif->bss_conf.arp_addr_cnt != 1) { 1634 attr->mask = 0; 1635 continue; 1636 } 1637 1638 attr->val = vif->bss_conf.arp_addr_list[0]; 1639 break; 1640 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1641 attr->val = *(__be32 *)&vif->addr[2]; 1642 break; 1643 default: 1644 break; 1645 } 1646 attr->reserved1 = 0; 1647 out_filter->num_attrs++; 1648 } 1649 } 1650 1651 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1652 struct ieee80211_vif *vif) 1653 { 1654 struct iwl_bcast_iter_data *data = _data; 1655 struct iwl_mvm *mvm = data->mvm; 1656 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1657 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1658 struct iwl_fw_bcast_mac *bcast_mac; 1659 int i; 1660 1661 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1662 return; 1663 1664 bcast_mac = &cmd->macs[mvmvif->id]; 1665 1666 /* 1667 * enable filtering only for associated stations, but not for P2P 1668 * Clients 1669 */ 1670 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1671 !vif->bss_conf.assoc) 1672 return; 1673 1674 bcast_mac->default_discard = 1; 1675 1676 /* copy all configured filters */ 1677 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1678 /* 1679 * Make sure we don't exceed our filters limit. 1680 * if there is still a valid filter to be configured, 1681 * be on the safe side and just allow bcast for this mac. 1682 */ 1683 if (WARN_ON_ONCE(data->current_filter >= 1684 ARRAY_SIZE(cmd->filters))) { 1685 bcast_mac->default_discard = 0; 1686 bcast_mac->attached_filters = 0; 1687 break; 1688 } 1689 1690 iwl_mvm_set_bcast_filter(vif, 1691 &mvm->bcast_filters[i], 1692 &cmd->filters[data->current_filter]); 1693 1694 /* skip current filter if it contains no attributes */ 1695 if (!cmd->filters[data->current_filter].num_attrs) 1696 continue; 1697 1698 /* attach the filter to current mac */ 1699 bcast_mac->attached_filters |= 1700 cpu_to_le16(BIT(data->current_filter)); 1701 1702 data->current_filter++; 1703 } 1704 } 1705 1706 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1707 struct iwl_bcast_filter_cmd *cmd) 1708 { 1709 struct iwl_bcast_iter_data iter_data = { 1710 .mvm = mvm, 1711 .cmd = cmd, 1712 }; 1713 1714 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1715 return false; 1716 1717 memset(cmd, 0, sizeof(*cmd)); 1718 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1719 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1720 1721 #ifdef CONFIG_IWLWIFI_DEBUGFS 1722 /* use debugfs filters/macs if override is configured */ 1723 if (mvm->dbgfs_bcast_filtering.override) { 1724 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1725 sizeof(cmd->filters)); 1726 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1727 sizeof(cmd->macs)); 1728 return true; 1729 } 1730 #endif 1731 1732 /* if no filters are configured, do nothing */ 1733 if (!mvm->bcast_filters) 1734 return false; 1735 1736 /* configure and attach these filters for each associated sta vif */ 1737 ieee80211_iterate_active_interfaces( 1738 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1739 iwl_mvm_bcast_filter_iterator, &iter_data); 1740 1741 return true; 1742 } 1743 1744 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1745 { 1746 struct iwl_bcast_filter_cmd cmd; 1747 1748 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1749 return 0; 1750 1751 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1752 return 0; 1753 1754 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1755 sizeof(cmd), &cmd); 1756 } 1757 #else 1758 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1759 { 1760 return 0; 1761 } 1762 #endif 1763 1764 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1765 struct ieee80211_vif *vif) 1766 { 1767 struct iwl_mu_group_mgmt_cmd cmd = {}; 1768 1769 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1770 WLAN_MEMBERSHIP_LEN); 1771 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1772 WLAN_USER_POSITION_LEN); 1773 1774 return iwl_mvm_send_cmd_pdu(mvm, 1775 WIDE_ID(DATA_PATH_GROUP, 1776 UPDATE_MU_GROUPS_CMD), 1777 0, sizeof(cmd), &cmd); 1778 } 1779 1780 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1781 struct ieee80211_vif *vif) 1782 { 1783 if (vif->mu_mimo_owner) { 1784 struct iwl_mu_group_mgmt_notif *notif = _data; 1785 1786 /* 1787 * MU-MIMO Group Id action frame is little endian. We treat 1788 * the data received from firmware as if it came from the 1789 * action frame, so no conversion is needed. 1790 */ 1791 ieee80211_update_mu_groups(vif, 1792 (u8 *)¬if->membership_status, 1793 (u8 *)¬if->user_position); 1794 } 1795 } 1796 1797 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1798 struct iwl_rx_cmd_buffer *rxb) 1799 { 1800 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1801 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1802 1803 ieee80211_iterate_active_interfaces_atomic( 1804 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1805 iwl_mvm_mu_mimo_iface_iterator, notif); 1806 } 1807 1808 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 1809 struct ieee80211_vif *vif, 1810 struct ieee80211_bss_conf *bss_conf, 1811 u32 changes) 1812 { 1813 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1814 int ret; 1815 1816 /* 1817 * Re-calculate the tsf id, as the master-slave relations depend on the 1818 * beacon interval, which was not known when the station interface was 1819 * added. 1820 */ 1821 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) 1822 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 1823 1824 /* 1825 * If we're not associated yet, take the (new) BSSID before associating 1826 * so the firmware knows. If we're already associated, then use the old 1827 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 1828 * branch for disassociation below. 1829 */ 1830 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 1831 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1832 1833 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 1834 if (ret) 1835 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 1836 1837 /* after sending it once, adopt mac80211 data */ 1838 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1839 mvmvif->associated = bss_conf->assoc; 1840 1841 if (changes & BSS_CHANGED_ASSOC) { 1842 if (bss_conf->assoc) { 1843 /* clear statistics to get clean beacon counter */ 1844 iwl_mvm_request_statistics(mvm, true); 1845 memset(&mvmvif->beacon_stats, 0, 1846 sizeof(mvmvif->beacon_stats)); 1847 1848 /* add quota for this interface */ 1849 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1850 if (ret) { 1851 IWL_ERR(mvm, "failed to update quotas\n"); 1852 return; 1853 } 1854 1855 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1856 &mvm->status)) { 1857 /* 1858 * If we're restarting then the firmware will 1859 * obviously have lost synchronisation with 1860 * the AP. It will attempt to synchronise by 1861 * itself, but we can make it more reliable by 1862 * scheduling a session protection time event. 1863 * 1864 * The firmware needs to receive a beacon to 1865 * catch up with synchronisation, use 110% of 1866 * the beacon interval. 1867 * 1868 * Set a large maximum delay to allow for more 1869 * than a single interface. 1870 */ 1871 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 1872 iwl_mvm_protect_session(mvm, vif, dur, dur, 1873 5 * dur, false); 1874 } 1875 1876 iwl_mvm_sf_update(mvm, vif, false); 1877 iwl_mvm_power_vif_assoc(mvm, vif); 1878 if (vif->p2p) { 1879 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 1880 iwl_mvm_update_smps(mvm, vif, 1881 IWL_MVM_SMPS_REQ_PROT, 1882 IEEE80211_SMPS_DYNAMIC); 1883 } 1884 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 1885 /* 1886 * If update fails - SF might be running in associated 1887 * mode while disassociated - which is forbidden. 1888 */ 1889 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 1890 "Failed to update SF upon disassociation\n"); 1891 1892 /* remove AP station now that the MAC is unassoc */ 1893 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id); 1894 if (ret) 1895 IWL_ERR(mvm, "failed to remove AP station\n"); 1896 1897 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 1898 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1899 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 1900 /* remove quota for this interface */ 1901 ret = iwl_mvm_update_quotas(mvm, false, NULL); 1902 if (ret) 1903 IWL_ERR(mvm, "failed to update quotas\n"); 1904 1905 if (vif->p2p) 1906 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 1907 1908 /* this will take the cleared BSSID from bss_conf */ 1909 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1910 if (ret) 1911 IWL_ERR(mvm, 1912 "failed to update MAC %pM (clear after unassoc)\n", 1913 vif->addr); 1914 } 1915 1916 /* 1917 * The firmware tracks the MU-MIMO group on its own. 1918 * However, on HW restart we should restore this data. 1919 */ 1920 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 1921 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 1922 ret = iwl_mvm_update_mu_groups(mvm, vif); 1923 if (ret) 1924 IWL_ERR(mvm, 1925 "failed to update VHT MU_MIMO groups\n"); 1926 } 1927 1928 iwl_mvm_recalc_multicast(mvm); 1929 iwl_mvm_configure_bcast_filter(mvm); 1930 1931 /* reset rssi values */ 1932 mvmvif->bf_data.ave_beacon_signal = 0; 1933 1934 iwl_mvm_bt_coex_vif_change(mvm); 1935 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 1936 IEEE80211_SMPS_AUTOMATIC); 1937 if (fw_has_capa(&mvm->fw->ucode_capa, 1938 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 1939 iwl_mvm_config_scan(mvm); 1940 } else if (changes & BSS_CHANGED_BEACON_INFO) { 1941 /* 1942 * We received a beacon _after_ association so 1943 * remove the session protection. 1944 */ 1945 iwl_mvm_remove_time_event(mvm, mvmvif, 1946 &mvmvif->time_event_data); 1947 } 1948 1949 if (changes & BSS_CHANGED_BEACON_INFO) { 1950 iwl_mvm_sf_update(mvm, vif, false); 1951 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 1952 } 1953 1954 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 1955 /* 1956 * Send power command on every beacon change, 1957 * because we may have not enabled beacon abort yet. 1958 */ 1959 BSS_CHANGED_BEACON_INFO)) { 1960 ret = iwl_mvm_power_update_mac(mvm); 1961 if (ret) 1962 IWL_ERR(mvm, "failed to update power mode\n"); 1963 } 1964 1965 if (changes & BSS_CHANGED_TXPOWER) { 1966 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 1967 bss_conf->txpower); 1968 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 1969 } 1970 1971 if (changes & BSS_CHANGED_CQM) { 1972 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 1973 /* reset cqm events tracking */ 1974 mvmvif->bf_data.last_cqm_event = 0; 1975 if (mvmvif->bf_data.bf_enabled) { 1976 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1977 if (ret) 1978 IWL_ERR(mvm, 1979 "failed to update CQM thresholds\n"); 1980 } 1981 } 1982 1983 if (changes & BSS_CHANGED_ARP_FILTER) { 1984 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 1985 iwl_mvm_configure_bcast_filter(mvm); 1986 } 1987 } 1988 1989 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 1990 struct ieee80211_vif *vif) 1991 { 1992 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1993 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1994 int ret; 1995 1996 /* 1997 * iwl_mvm_mac_ctxt_add() might read directly from the device 1998 * (the system time), so make sure it is available. 1999 */ 2000 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2001 if (ret) 2002 return ret; 2003 2004 mutex_lock(&mvm->mutex); 2005 2006 /* Send the beacon template */ 2007 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2008 if (ret) 2009 goto out_unlock; 2010 2011 /* 2012 * Re-calculate the tsf id, as the master-slave relations depend on the 2013 * beacon interval, which was not known when the AP interface was added. 2014 */ 2015 if (vif->type == NL80211_IFTYPE_AP) 2016 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2017 2018 mvmvif->ap_assoc_sta_count = 0; 2019 2020 /* Add the mac context */ 2021 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2022 if (ret) 2023 goto out_unlock; 2024 2025 /* Perform the binding */ 2026 ret = iwl_mvm_binding_add_vif(mvm, vif); 2027 if (ret) 2028 goto out_remove; 2029 2030 /* Send the bcast station. At this stage the TBTT and DTIM time events 2031 * are added and applied to the scheduler */ 2032 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2033 if (ret) 2034 goto out_unbind; 2035 2036 /* must be set before quota calculations */ 2037 mvmvif->ap_ibss_active = true; 2038 2039 /* power updated needs to be done before quotas */ 2040 iwl_mvm_power_update_mac(mvm); 2041 2042 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2043 if (ret) 2044 goto out_quota_failed; 2045 2046 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2047 if (vif->p2p && mvm->p2p_device_vif) 2048 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2049 2050 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2051 2052 iwl_mvm_bt_coex_vif_change(mvm); 2053 2054 /* we don't support TDLS during DCM */ 2055 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2056 iwl_mvm_teardown_tdls_peers(mvm); 2057 2058 goto out_unlock; 2059 2060 out_quota_failed: 2061 iwl_mvm_power_update_mac(mvm); 2062 mvmvif->ap_ibss_active = false; 2063 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2064 out_unbind: 2065 iwl_mvm_binding_remove_vif(mvm, vif); 2066 out_remove: 2067 iwl_mvm_mac_ctxt_remove(mvm, vif); 2068 out_unlock: 2069 mutex_unlock(&mvm->mutex); 2070 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2071 return ret; 2072 } 2073 2074 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2075 struct ieee80211_vif *vif) 2076 { 2077 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2079 2080 iwl_mvm_prepare_mac_removal(mvm, vif); 2081 2082 mutex_lock(&mvm->mutex); 2083 2084 /* Handle AP stop while in CSA */ 2085 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2086 iwl_mvm_remove_time_event(mvm, mvmvif, 2087 &mvmvif->time_event_data); 2088 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2089 mvmvif->csa_countdown = false; 2090 } 2091 2092 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2093 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2094 mvm->csa_tx_block_bcn_timeout = 0; 2095 } 2096 2097 mvmvif->ap_ibss_active = false; 2098 mvm->ap_last_beacon_gp2 = 0; 2099 2100 iwl_mvm_bt_coex_vif_change(mvm); 2101 2102 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2103 2104 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2105 if (vif->p2p && mvm->p2p_device_vif) 2106 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2107 2108 iwl_mvm_update_quotas(mvm, false, NULL); 2109 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2110 iwl_mvm_binding_remove_vif(mvm, vif); 2111 2112 iwl_mvm_power_update_mac(mvm); 2113 2114 iwl_mvm_mac_ctxt_remove(mvm, vif); 2115 2116 mutex_unlock(&mvm->mutex); 2117 } 2118 2119 static void 2120 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2121 struct ieee80211_vif *vif, 2122 struct ieee80211_bss_conf *bss_conf, 2123 u32 changes) 2124 { 2125 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2126 2127 /* Changes will be applied when the AP/IBSS is started */ 2128 if (!mvmvif->ap_ibss_active) 2129 return; 2130 2131 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2132 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2133 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2134 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2135 2136 /* Need to send a new beacon template to the FW */ 2137 if (changes & BSS_CHANGED_BEACON && 2138 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2139 IWL_WARN(mvm, "Failed updating beacon data\n"); 2140 2141 if (changes & BSS_CHANGED_TXPOWER) { 2142 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2143 bss_conf->txpower); 2144 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2145 } 2146 } 2147 2148 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2149 struct ieee80211_vif *vif, 2150 struct ieee80211_bss_conf *bss_conf, 2151 u32 changes) 2152 { 2153 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2154 2155 /* 2156 * iwl_mvm_bss_info_changed_station() might call 2157 * iwl_mvm_protect_session(), which reads directly from 2158 * the device (the system time), so make sure it is available. 2159 */ 2160 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2161 return; 2162 2163 mutex_lock(&mvm->mutex); 2164 2165 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2166 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2167 2168 switch (vif->type) { 2169 case NL80211_IFTYPE_STATION: 2170 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2171 break; 2172 case NL80211_IFTYPE_AP: 2173 case NL80211_IFTYPE_ADHOC: 2174 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2175 break; 2176 default: 2177 /* shouldn't happen */ 2178 WARN_ON_ONCE(1); 2179 } 2180 2181 mutex_unlock(&mvm->mutex); 2182 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2183 } 2184 2185 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2186 struct ieee80211_vif *vif, 2187 struct ieee80211_scan_request *hw_req) 2188 { 2189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2190 int ret; 2191 2192 if (hw_req->req.n_channels == 0 || 2193 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2194 return -EINVAL; 2195 2196 mutex_lock(&mvm->mutex); 2197 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2198 mutex_unlock(&mvm->mutex); 2199 2200 return ret; 2201 } 2202 2203 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2204 struct ieee80211_vif *vif) 2205 { 2206 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2207 2208 mutex_lock(&mvm->mutex); 2209 2210 /* Due to a race condition, it's possible that mac80211 asks 2211 * us to stop a hw_scan when it's already stopped. This can 2212 * happen, for instance, if we stopped the scan ourselves, 2213 * called ieee80211_scan_completed() and the userspace called 2214 * cancel scan scan before ieee80211_scan_work() could run. 2215 * To handle that, simply return if the scan is not running. 2216 */ 2217 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2218 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2219 2220 mutex_unlock(&mvm->mutex); 2221 } 2222 2223 static void 2224 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2225 struct ieee80211_sta *sta, u16 tids, 2226 int num_frames, 2227 enum ieee80211_frame_release_type reason, 2228 bool more_data) 2229 { 2230 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2231 2232 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2233 2234 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2235 tids, more_data, false); 2236 } 2237 2238 static void 2239 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2240 struct ieee80211_sta *sta, u16 tids, 2241 int num_frames, 2242 enum ieee80211_frame_release_type reason, 2243 bool more_data) 2244 { 2245 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2246 2247 /* Called when we need to transmit (a) frame(s) from agg queue */ 2248 2249 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2250 tids, more_data, true); 2251 } 2252 2253 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2254 struct ieee80211_vif *vif, 2255 enum sta_notify_cmd cmd, 2256 struct ieee80211_sta *sta) 2257 { 2258 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2259 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2260 unsigned long txqs = 0, tids = 0; 2261 int tid; 2262 2263 spin_lock_bh(&mvmsta->lock); 2264 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2265 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2266 2267 if (tid_data->state != IWL_AGG_ON && 2268 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA) 2269 continue; 2270 2271 __set_bit(tid_data->txq_id, &txqs); 2272 2273 if (iwl_mvm_tid_queued(tid_data) == 0) 2274 continue; 2275 2276 __set_bit(tid, &tids); 2277 } 2278 2279 switch (cmd) { 2280 case STA_NOTIFY_SLEEP: 2281 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0) 2282 ieee80211_sta_block_awake(hw, sta, true); 2283 2284 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2285 ieee80211_sta_set_buffered(sta, tid, true); 2286 2287 if (txqs) 2288 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2289 /* 2290 * The fw updates the STA to be asleep. Tx packets on the Tx 2291 * queues to this station will not be transmitted. The fw will 2292 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2293 */ 2294 break; 2295 case STA_NOTIFY_AWAKE: 2296 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) 2297 break; 2298 2299 if (txqs) 2300 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2301 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2302 break; 2303 default: 2304 break; 2305 } 2306 spin_unlock_bh(&mvmsta->lock); 2307 } 2308 2309 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2310 struct ieee80211_vif *vif, 2311 struct ieee80211_sta *sta) 2312 { 2313 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2314 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2315 2316 /* 2317 * This is called before mac80211 does RCU synchronisation, 2318 * so here we already invalidate our internal RCU-protected 2319 * station pointer. The rest of the code will thus no longer 2320 * be able to find the station this way, and we don't rely 2321 * on further RCU synchronisation after the sta_state() 2322 * callback deleted the station. 2323 */ 2324 mutex_lock(&mvm->mutex); 2325 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2326 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2327 ERR_PTR(-ENOENT)); 2328 2329 mutex_unlock(&mvm->mutex); 2330 } 2331 2332 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2333 const u8 *bssid) 2334 { 2335 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2336 return; 2337 2338 if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) { 2339 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2340 return; 2341 } 2342 2343 if (iwlwifi_mod_params.uapsd_disable) { 2344 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2345 return; 2346 } 2347 2348 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2349 } 2350 2351 static void 2352 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2353 struct ieee80211_vif *vif, u8 *peer_addr, 2354 enum nl80211_tdls_operation action) 2355 { 2356 struct iwl_fw_dbg_trigger_tlv *trig; 2357 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2358 2359 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) 2360 return; 2361 2362 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); 2363 tdls_trig = (void *)trig->data; 2364 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 2365 return; 2366 2367 if (!(tdls_trig->action_bitmap & BIT(action))) 2368 return; 2369 2370 if (tdls_trig->peer_mode && 2371 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2372 return; 2373 2374 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 2375 "TDLS event occurred, peer %pM, action %d", 2376 peer_addr, action); 2377 } 2378 2379 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2380 struct ieee80211_vif *vif, 2381 struct ieee80211_sta *sta, 2382 enum ieee80211_sta_state old_state, 2383 enum ieee80211_sta_state new_state) 2384 { 2385 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2386 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2387 int ret; 2388 2389 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2390 sta->addr, old_state, new_state); 2391 2392 /* this would be a mac80211 bug ... but don't crash */ 2393 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2394 return -EINVAL; 2395 2396 /* if a STA is being removed, reuse its ID */ 2397 flush_work(&mvm->sta_drained_wk); 2398 2399 mutex_lock(&mvm->mutex); 2400 if (old_state == IEEE80211_STA_NOTEXIST && 2401 new_state == IEEE80211_STA_NONE) { 2402 /* 2403 * Firmware bug - it'll crash if the beacon interval is less 2404 * than 16. We can't avoid connecting at all, so refuse the 2405 * station state change, this will cause mac80211 to abandon 2406 * attempts to connect to this AP, and eventually wpa_s will 2407 * blacklist the AP... 2408 */ 2409 if (vif->type == NL80211_IFTYPE_STATION && 2410 vif->bss_conf.beacon_int < 16) { 2411 IWL_ERR(mvm, 2412 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2413 sta->addr, vif->bss_conf.beacon_int); 2414 ret = -EINVAL; 2415 goto out_unlock; 2416 } 2417 2418 if (sta->tdls && 2419 (vif->p2p || 2420 iwl_mvm_tdls_sta_count(mvm, NULL) == 2421 IWL_MVM_TDLS_STA_COUNT || 2422 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2423 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2424 ret = -EBUSY; 2425 goto out_unlock; 2426 } 2427 2428 ret = iwl_mvm_add_sta(mvm, vif, sta); 2429 if (sta->tdls && ret == 0) { 2430 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2431 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2432 NL80211_TDLS_SETUP); 2433 } 2434 } else if (old_state == IEEE80211_STA_NONE && 2435 new_state == IEEE80211_STA_AUTH) { 2436 /* 2437 * EBS may be disabled due to previous failures reported by FW. 2438 * Reset EBS status here assuming environment has been changed. 2439 */ 2440 mvm->last_ebs_successful = true; 2441 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2442 ret = 0; 2443 } else if (old_state == IEEE80211_STA_AUTH && 2444 new_state == IEEE80211_STA_ASSOC) { 2445 if (vif->type == NL80211_IFTYPE_AP) { 2446 mvmvif->ap_assoc_sta_count++; 2447 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2448 } 2449 ret = iwl_mvm_update_sta(mvm, vif, sta); 2450 if (ret == 0) 2451 iwl_mvm_rs_rate_init(mvm, sta, 2452 mvmvif->phy_ctxt->channel->band, 2453 true); 2454 } else if (old_state == IEEE80211_STA_ASSOC && 2455 new_state == IEEE80211_STA_AUTHORIZED) { 2456 2457 /* we don't support TDLS during DCM */ 2458 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2459 iwl_mvm_teardown_tdls_peers(mvm); 2460 2461 if (sta->tdls) 2462 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2463 NL80211_TDLS_ENABLE_LINK); 2464 2465 /* enable beacon filtering */ 2466 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2467 ret = 0; 2468 } else if (old_state == IEEE80211_STA_AUTHORIZED && 2469 new_state == IEEE80211_STA_ASSOC) { 2470 /* disable beacon filtering */ 2471 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 2472 ret = 0; 2473 } else if (old_state == IEEE80211_STA_ASSOC && 2474 new_state == IEEE80211_STA_AUTH) { 2475 if (vif->type == NL80211_IFTYPE_AP) { 2476 mvmvif->ap_assoc_sta_count--; 2477 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2478 } 2479 ret = 0; 2480 } else if (old_state == IEEE80211_STA_AUTH && 2481 new_state == IEEE80211_STA_NONE) { 2482 ret = 0; 2483 } else if (old_state == IEEE80211_STA_NONE && 2484 new_state == IEEE80211_STA_NOTEXIST) { 2485 ret = iwl_mvm_rm_sta(mvm, vif, sta); 2486 if (sta->tdls) { 2487 iwl_mvm_recalc_tdls_state(mvm, vif, false); 2488 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2489 NL80211_TDLS_DISABLE_LINK); 2490 } 2491 } else { 2492 ret = -EIO; 2493 } 2494 out_unlock: 2495 mutex_unlock(&mvm->mutex); 2496 2497 if (sta->tdls && ret == 0) { 2498 if (old_state == IEEE80211_STA_NOTEXIST && 2499 new_state == IEEE80211_STA_NONE) 2500 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2501 else if (old_state == IEEE80211_STA_NONE && 2502 new_state == IEEE80211_STA_NOTEXIST) 2503 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2504 } 2505 2506 return ret; 2507 } 2508 2509 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 2510 { 2511 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2512 2513 mvm->rts_threshold = value; 2514 2515 return 0; 2516 } 2517 2518 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 2519 struct ieee80211_vif *vif, 2520 struct ieee80211_sta *sta, u32 changed) 2521 { 2522 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2523 2524 if (vif->type == NL80211_IFTYPE_STATION && 2525 changed & IEEE80211_RC_NSS_CHANGED) 2526 iwl_mvm_sf_update(mvm, vif, false); 2527 } 2528 2529 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 2530 struct ieee80211_vif *vif, u16 ac, 2531 const struct ieee80211_tx_queue_params *params) 2532 { 2533 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2534 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2535 2536 mvmvif->queue_params[ac] = *params; 2537 2538 /* 2539 * No need to update right away, we'll get BSS_CHANGED_QOS 2540 * The exception is P2P_DEVICE interface which needs immediate update. 2541 */ 2542 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2543 int ret; 2544 2545 mutex_lock(&mvm->mutex); 2546 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2547 mutex_unlock(&mvm->mutex); 2548 return ret; 2549 } 2550 return 0; 2551 } 2552 2553 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 2554 struct ieee80211_vif *vif) 2555 { 2556 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2557 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2558 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2559 2560 if (WARN_ON_ONCE(vif->bss_conf.assoc)) 2561 return; 2562 2563 /* 2564 * iwl_mvm_protect_session() reads directly from the device 2565 * (the system time), so make sure it is available. 2566 */ 2567 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 2568 return; 2569 2570 mutex_lock(&mvm->mutex); 2571 /* Try really hard to protect the session and hear a beacon */ 2572 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 2573 mutex_unlock(&mvm->mutex); 2574 2575 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 2576 } 2577 2578 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 2579 struct ieee80211_vif *vif, 2580 struct cfg80211_sched_scan_request *req, 2581 struct ieee80211_scan_ies *ies) 2582 { 2583 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2584 2585 int ret; 2586 2587 mutex_lock(&mvm->mutex); 2588 2589 if (!vif->bss_conf.idle) { 2590 ret = -EBUSY; 2591 goto out; 2592 } 2593 2594 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 2595 2596 out: 2597 mutex_unlock(&mvm->mutex); 2598 return ret; 2599 } 2600 2601 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 2602 struct ieee80211_vif *vif) 2603 { 2604 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2605 int ret; 2606 2607 mutex_lock(&mvm->mutex); 2608 2609 /* Due to a race condition, it's possible that mac80211 asks 2610 * us to stop a sched_scan when it's already stopped. This 2611 * can happen, for instance, if we stopped the scan ourselves, 2612 * called ieee80211_sched_scan_stopped() and the userspace called 2613 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 2614 * could run. To handle this, simply return if the scan is 2615 * not running. 2616 */ 2617 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 2618 mutex_unlock(&mvm->mutex); 2619 return 0; 2620 } 2621 2622 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 2623 mutex_unlock(&mvm->mutex); 2624 iwl_mvm_wait_for_async_handlers(mvm); 2625 2626 return ret; 2627 } 2628 2629 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 2630 enum set_key_cmd cmd, 2631 struct ieee80211_vif *vif, 2632 struct ieee80211_sta *sta, 2633 struct ieee80211_key_conf *key) 2634 { 2635 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2636 struct iwl_mvm_sta *mvmsta; 2637 struct iwl_mvm_key_pn *ptk_pn; 2638 int keyidx = key->keyidx; 2639 int ret; 2640 u8 key_offset; 2641 2642 if (iwlwifi_mod_params.sw_crypto) { 2643 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 2644 return -EOPNOTSUPP; 2645 } 2646 2647 switch (key->cipher) { 2648 case WLAN_CIPHER_SUITE_TKIP: 2649 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 2650 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2651 break; 2652 case WLAN_CIPHER_SUITE_CCMP: 2653 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2654 break; 2655 case WLAN_CIPHER_SUITE_AES_CMAC: 2656 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 2657 break; 2658 case WLAN_CIPHER_SUITE_WEP40: 2659 case WLAN_CIPHER_SUITE_WEP104: 2660 /* For non-client mode, only use WEP keys for TX as we probably 2661 * don't have a station yet anyway and would then have to keep 2662 * track of the keys, linking them to each of the clients/peers 2663 * as they appear. For now, don't do that, for performance WEP 2664 * offload doesn't really matter much, but we need it for some 2665 * other offload features in client mode. 2666 */ 2667 if (vif->type != NL80211_IFTYPE_STATION) 2668 return 0; 2669 break; 2670 default: 2671 /* currently FW supports only one optional cipher scheme */ 2672 if (hw->n_cipher_schemes && 2673 hw->cipher_schemes->cipher == key->cipher) 2674 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2675 else 2676 return -EOPNOTSUPP; 2677 } 2678 2679 mutex_lock(&mvm->mutex); 2680 2681 switch (cmd) { 2682 case SET_KEY: 2683 if ((vif->type == NL80211_IFTYPE_ADHOC || 2684 vif->type == NL80211_IFTYPE_AP) && !sta) { 2685 /* 2686 * GTK on AP interface is a TX-only key, return 0; 2687 * on IBSS they're per-station and because we're lazy 2688 * we don't support them for RX, so do the same. 2689 * CMAC in AP/IBSS modes must be done in software. 2690 */ 2691 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) 2692 ret = -EOPNOTSUPP; 2693 else 2694 ret = 0; 2695 key->hw_key_idx = STA_KEY_IDX_INVALID; 2696 break; 2697 } 2698 2699 /* During FW restart, in order to restore the state as it was, 2700 * don't try to reprogram keys we previously failed for. 2701 */ 2702 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2703 key->hw_key_idx == STA_KEY_IDX_INVALID) { 2704 IWL_DEBUG_MAC80211(mvm, 2705 "skip invalid idx key programming during restart\n"); 2706 ret = 0; 2707 break; 2708 } 2709 2710 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2711 sta && iwl_mvm_has_new_rx_api(mvm) && 2712 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2713 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2714 key->cipher == WLAN_CIPHER_SUITE_GCMP)) { 2715 struct ieee80211_key_seq seq; 2716 int tid, q; 2717 2718 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2719 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 2720 ptk_pn = kzalloc(sizeof(*ptk_pn) + 2721 mvm->trans->num_rx_queues * 2722 sizeof(ptk_pn->q[0]), 2723 GFP_KERNEL); 2724 if (!ptk_pn) { 2725 ret = -ENOMEM; 2726 break; 2727 } 2728 2729 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2730 ieee80211_get_key_rx_seq(key, tid, &seq); 2731 for (q = 0; q < mvm->trans->num_rx_queues; q++) 2732 memcpy(ptk_pn->q[q].pn[tid], 2733 seq.ccmp.pn, 2734 IEEE80211_CCMP_PN_LEN); 2735 } 2736 2737 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 2738 } 2739 2740 /* in HW restart reuse the index, otherwise request a new one */ 2741 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2742 key_offset = key->hw_key_idx; 2743 else 2744 key_offset = STA_KEY_IDX_INVALID; 2745 2746 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 2747 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 2748 if (ret) { 2749 IWL_WARN(mvm, "set key failed\n"); 2750 /* 2751 * can't add key for RX, but we don't need it 2752 * in the device for TX so still return 0 2753 */ 2754 key->hw_key_idx = STA_KEY_IDX_INVALID; 2755 ret = 0; 2756 } 2757 2758 break; 2759 case DISABLE_KEY: 2760 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 2761 ret = 0; 2762 break; 2763 } 2764 2765 if (sta && iwl_mvm_has_new_rx_api(mvm) && 2766 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2767 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2768 key->cipher == WLAN_CIPHER_SUITE_GCMP)) { 2769 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2770 ptk_pn = rcu_dereference_protected( 2771 mvmsta->ptk_pn[keyidx], 2772 lockdep_is_held(&mvm->mutex)); 2773 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 2774 if (ptk_pn) 2775 kfree_rcu(ptk_pn, rcu_head); 2776 } 2777 2778 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 2779 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 2780 break; 2781 default: 2782 ret = -EINVAL; 2783 } 2784 2785 mutex_unlock(&mvm->mutex); 2786 return ret; 2787 } 2788 2789 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 2790 struct ieee80211_vif *vif, 2791 struct ieee80211_key_conf *keyconf, 2792 struct ieee80211_sta *sta, 2793 u32 iv32, u16 *phase1key) 2794 { 2795 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2796 2797 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 2798 return; 2799 2800 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 2801 } 2802 2803 2804 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 2805 struct iwl_rx_packet *pkt, void *data) 2806 { 2807 struct iwl_mvm *mvm = 2808 container_of(notif_wait, struct iwl_mvm, notif_wait); 2809 struct iwl_hs20_roc_res *resp; 2810 int resp_len = iwl_rx_packet_payload_len(pkt); 2811 struct iwl_mvm_time_event_data *te_data = data; 2812 2813 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 2814 return true; 2815 2816 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 2817 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 2818 return true; 2819 } 2820 2821 resp = (void *)pkt->data; 2822 2823 IWL_DEBUG_TE(mvm, 2824 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 2825 resp->status, resp->event_unique_id); 2826 2827 te_data->uid = le32_to_cpu(resp->event_unique_id); 2828 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 2829 te_data->uid); 2830 2831 spin_lock_bh(&mvm->time_event_lock); 2832 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 2833 spin_unlock_bh(&mvm->time_event_lock); 2834 2835 return true; 2836 } 2837 2838 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 2839 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 2840 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 2841 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 2842 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 2843 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 2844 struct ieee80211_channel *channel, 2845 struct ieee80211_vif *vif, 2846 int duration) 2847 { 2848 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 2849 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2850 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 2851 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 2852 struct iwl_notification_wait wait_time_event; 2853 u32 dtim_interval = vif->bss_conf.dtim_period * 2854 vif->bss_conf.beacon_int; 2855 u32 req_dur, delay; 2856 struct iwl_hs20_roc_req aux_roc_req = { 2857 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 2858 .id_and_color = 2859 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 2860 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 2861 /* Set the channel info data */ 2862 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ? 2863 PHY_BAND_24 : PHY_BAND_5, 2864 .channel_info.channel = channel->hw_value, 2865 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 2866 /* Set the time and duration */ 2867 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 2868 }; 2869 2870 delay = AUX_ROC_MIN_DELAY; 2871 req_dur = MSEC_TO_TU(duration); 2872 2873 /* 2874 * If we are associated we want the delay time to be at least one 2875 * dtim interval so that the FW can wait until after the DTIM and 2876 * then start the time event, this will potentially allow us to 2877 * remain off-channel for the max duration. 2878 * Since we want to use almost a whole dtim interval we would also 2879 * like the delay to be for 2-3 dtim intervals, in case there are 2880 * other time events with higher priority. 2881 */ 2882 if (vif->bss_conf.assoc) { 2883 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 2884 /* We cannot remain off-channel longer than the DTIM interval */ 2885 if (dtim_interval <= req_dur) { 2886 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 2887 if (req_dur <= AUX_ROC_MIN_DURATION) 2888 req_dur = dtim_interval - 2889 AUX_ROC_MIN_SAFETY_BUFFER; 2890 } 2891 } 2892 2893 aux_roc_req.duration = cpu_to_le32(req_dur); 2894 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 2895 2896 IWL_DEBUG_TE(mvm, 2897 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 2898 channel->hw_value, req_dur, duration, delay, 2899 dtim_interval); 2900 /* Set the node address */ 2901 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 2902 2903 lockdep_assert_held(&mvm->mutex); 2904 2905 spin_lock_bh(&mvm->time_event_lock); 2906 2907 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 2908 spin_unlock_bh(&mvm->time_event_lock); 2909 return -EIO; 2910 } 2911 2912 te_data->vif = vif; 2913 te_data->duration = duration; 2914 te_data->id = HOT_SPOT_CMD; 2915 2916 spin_unlock_bh(&mvm->time_event_lock); 2917 2918 /* 2919 * Use a notification wait, which really just processes the 2920 * command response and doesn't wait for anything, in order 2921 * to be able to process the response and get the UID inside 2922 * the RX path. Using CMD_WANT_SKB doesn't work because it 2923 * stores the buffer and then wakes up this thread, by which 2924 * time another notification (that the time event started) 2925 * might already be processed unsuccessfully. 2926 */ 2927 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 2928 time_event_response, 2929 ARRAY_SIZE(time_event_response), 2930 iwl_mvm_rx_aux_roc, te_data); 2931 2932 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 2933 &aux_roc_req); 2934 2935 if (res) { 2936 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 2937 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 2938 goto out_clear_te; 2939 } 2940 2941 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 2942 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 2943 /* should never fail */ 2944 WARN_ON_ONCE(res); 2945 2946 if (res) { 2947 out_clear_te: 2948 spin_lock_bh(&mvm->time_event_lock); 2949 iwl_mvm_te_clear_data(mvm, te_data); 2950 spin_unlock_bh(&mvm->time_event_lock); 2951 } 2952 2953 return res; 2954 } 2955 2956 static int iwl_mvm_roc(struct ieee80211_hw *hw, 2957 struct ieee80211_vif *vif, 2958 struct ieee80211_channel *channel, 2959 int duration, 2960 enum ieee80211_roc_type type) 2961 { 2962 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2963 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2964 struct cfg80211_chan_def chandef; 2965 struct iwl_mvm_phy_ctxt *phy_ctxt; 2966 int ret, i; 2967 2968 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 2969 duration, type); 2970 2971 flush_work(&mvm->roc_done_wk); 2972 2973 mutex_lock(&mvm->mutex); 2974 2975 switch (vif->type) { 2976 case NL80211_IFTYPE_STATION: 2977 if (fw_has_capa(&mvm->fw->ucode_capa, 2978 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 2979 /* Use aux roc framework (HS20) */ 2980 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 2981 vif, duration); 2982 goto out_unlock; 2983 } 2984 IWL_ERR(mvm, "hotspot not supported\n"); 2985 ret = -EINVAL; 2986 goto out_unlock; 2987 case NL80211_IFTYPE_P2P_DEVICE: 2988 /* handle below */ 2989 break; 2990 default: 2991 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 2992 ret = -EINVAL; 2993 goto out_unlock; 2994 } 2995 2996 for (i = 0; i < NUM_PHY_CTX; i++) { 2997 phy_ctxt = &mvm->phy_ctxts[i]; 2998 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 2999 continue; 3000 3001 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3002 /* 3003 * Unbind the P2P_DEVICE from the current PHY context, 3004 * and if the PHY context is not used remove it. 3005 */ 3006 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3007 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3008 goto out_unlock; 3009 3010 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3011 3012 /* Bind the P2P_DEVICE to the current PHY Context */ 3013 mvmvif->phy_ctxt = phy_ctxt; 3014 3015 ret = iwl_mvm_binding_add_vif(mvm, vif); 3016 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3017 goto out_unlock; 3018 3019 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3020 goto schedule_time_event; 3021 } 3022 } 3023 3024 /* Need to update the PHY context only if the ROC channel changed */ 3025 if (channel == mvmvif->phy_ctxt->channel) 3026 goto schedule_time_event; 3027 3028 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3029 3030 /* 3031 * Change the PHY context configuration as it is currently referenced 3032 * only by the P2P Device MAC 3033 */ 3034 if (mvmvif->phy_ctxt->ref == 1) { 3035 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3036 &chandef, 1, 1); 3037 if (ret) 3038 goto out_unlock; 3039 } else { 3040 /* 3041 * The PHY context is shared with other MACs. Need to remove the 3042 * P2P Device from the binding, allocate an new PHY context and 3043 * create a new binding 3044 */ 3045 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3046 if (!phy_ctxt) { 3047 ret = -ENOSPC; 3048 goto out_unlock; 3049 } 3050 3051 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3052 1, 1); 3053 if (ret) { 3054 IWL_ERR(mvm, "Failed to change PHY context\n"); 3055 goto out_unlock; 3056 } 3057 3058 /* Unbind the P2P_DEVICE from the current PHY context */ 3059 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3060 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3061 goto out_unlock; 3062 3063 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3064 3065 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3066 mvmvif->phy_ctxt = phy_ctxt; 3067 3068 ret = iwl_mvm_binding_add_vif(mvm, vif); 3069 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3070 goto out_unlock; 3071 3072 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3073 } 3074 3075 schedule_time_event: 3076 /* Schedule the time events */ 3077 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3078 3079 out_unlock: 3080 mutex_unlock(&mvm->mutex); 3081 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3082 return ret; 3083 } 3084 3085 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3086 { 3087 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3088 3089 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3090 3091 mutex_lock(&mvm->mutex); 3092 iwl_mvm_stop_roc(mvm); 3093 mutex_unlock(&mvm->mutex); 3094 3095 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3096 return 0; 3097 } 3098 3099 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3100 struct ieee80211_chanctx_conf *ctx) 3101 { 3102 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3103 struct iwl_mvm_phy_ctxt *phy_ctxt; 3104 int ret; 3105 3106 lockdep_assert_held(&mvm->mutex); 3107 3108 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3109 3110 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3111 if (!phy_ctxt) { 3112 ret = -ENOSPC; 3113 goto out; 3114 } 3115 3116 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3117 ctx->rx_chains_static, 3118 ctx->rx_chains_dynamic); 3119 if (ret) { 3120 IWL_ERR(mvm, "Failed to add PHY context\n"); 3121 goto out; 3122 } 3123 3124 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3125 *phy_ctxt_id = phy_ctxt->id; 3126 out: 3127 return ret; 3128 } 3129 3130 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3131 struct ieee80211_chanctx_conf *ctx) 3132 { 3133 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3134 int ret; 3135 3136 mutex_lock(&mvm->mutex); 3137 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3138 mutex_unlock(&mvm->mutex); 3139 3140 return ret; 3141 } 3142 3143 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3144 struct ieee80211_chanctx_conf *ctx) 3145 { 3146 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3147 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3148 3149 lockdep_assert_held(&mvm->mutex); 3150 3151 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3152 } 3153 3154 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3155 struct ieee80211_chanctx_conf *ctx) 3156 { 3157 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3158 3159 mutex_lock(&mvm->mutex); 3160 __iwl_mvm_remove_chanctx(mvm, ctx); 3161 mutex_unlock(&mvm->mutex); 3162 } 3163 3164 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3165 struct ieee80211_chanctx_conf *ctx, 3166 u32 changed) 3167 { 3168 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3169 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3170 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3171 3172 if (WARN_ONCE((phy_ctxt->ref > 1) && 3173 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3174 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3175 IEEE80211_CHANCTX_CHANGE_RADAR | 3176 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3177 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3178 phy_ctxt->ref, changed)) 3179 return; 3180 3181 mutex_lock(&mvm->mutex); 3182 iwl_mvm_bt_coex_vif_change(mvm); 3183 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3184 ctx->rx_chains_static, 3185 ctx->rx_chains_dynamic); 3186 mutex_unlock(&mvm->mutex); 3187 } 3188 3189 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3190 struct ieee80211_vif *vif, 3191 struct ieee80211_chanctx_conf *ctx, 3192 bool switching_chanctx) 3193 { 3194 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3195 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3196 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3197 int ret; 3198 3199 lockdep_assert_held(&mvm->mutex); 3200 3201 mvmvif->phy_ctxt = phy_ctxt; 3202 3203 switch (vif->type) { 3204 case NL80211_IFTYPE_AP: 3205 /* only needed if we're switching chanctx (i.e. during CSA) */ 3206 if (switching_chanctx) { 3207 mvmvif->ap_ibss_active = true; 3208 break; 3209 } 3210 case NL80211_IFTYPE_ADHOC: 3211 /* 3212 * The AP binding flow is handled as part of the start_ap flow 3213 * (in bss_info_changed), similarly for IBSS. 3214 */ 3215 ret = 0; 3216 goto out; 3217 case NL80211_IFTYPE_STATION: 3218 break; 3219 case NL80211_IFTYPE_MONITOR: 3220 /* always disable PS when a monitor interface is active */ 3221 mvmvif->ps_disabled = true; 3222 break; 3223 default: 3224 ret = -EINVAL; 3225 goto out; 3226 } 3227 3228 ret = iwl_mvm_binding_add_vif(mvm, vif); 3229 if (ret) 3230 goto out; 3231 3232 /* 3233 * Power state must be updated before quotas, 3234 * otherwise fw will complain. 3235 */ 3236 iwl_mvm_power_update_mac(mvm); 3237 3238 /* Setting the quota at this stage is only required for monitor 3239 * interfaces. For the other types, the bss_info changed flow 3240 * will handle quota settings. 3241 */ 3242 if (vif->type == NL80211_IFTYPE_MONITOR) { 3243 mvmvif->monitor_active = true; 3244 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3245 if (ret) 3246 goto out_remove_binding; 3247 3248 ret = iwl_mvm_add_snif_sta(mvm, vif); 3249 if (ret) 3250 goto out_remove_binding; 3251 3252 } 3253 3254 /* Handle binding during CSA */ 3255 if (vif->type == NL80211_IFTYPE_AP) { 3256 iwl_mvm_update_quotas(mvm, false, NULL); 3257 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3258 } 3259 3260 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3261 u32 duration = 2 * vif->bss_conf.beacon_int; 3262 3263 /* iwl_mvm_protect_session() reads directly from the 3264 * device (the system time), so make sure it is 3265 * available. 3266 */ 3267 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3268 if (ret) 3269 goto out_remove_binding; 3270 3271 /* Protect the session to make sure we hear the first 3272 * beacon on the new channel. 3273 */ 3274 iwl_mvm_protect_session(mvm, vif, duration, duration, 3275 vif->bss_conf.beacon_int / 2, 3276 true); 3277 3278 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3279 3280 iwl_mvm_update_quotas(mvm, false, NULL); 3281 } 3282 3283 goto out; 3284 3285 out_remove_binding: 3286 iwl_mvm_binding_remove_vif(mvm, vif); 3287 iwl_mvm_power_update_mac(mvm); 3288 out: 3289 if (ret) 3290 mvmvif->phy_ctxt = NULL; 3291 return ret; 3292 } 3293 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3294 struct ieee80211_vif *vif, 3295 struct ieee80211_chanctx_conf *ctx) 3296 { 3297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3298 int ret; 3299 3300 mutex_lock(&mvm->mutex); 3301 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3302 mutex_unlock(&mvm->mutex); 3303 3304 return ret; 3305 } 3306 3307 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3308 struct ieee80211_vif *vif, 3309 struct ieee80211_chanctx_conf *ctx, 3310 bool switching_chanctx) 3311 { 3312 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3313 struct ieee80211_vif *disabled_vif = NULL; 3314 3315 lockdep_assert_held(&mvm->mutex); 3316 3317 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3318 3319 switch (vif->type) { 3320 case NL80211_IFTYPE_ADHOC: 3321 goto out; 3322 case NL80211_IFTYPE_MONITOR: 3323 mvmvif->monitor_active = false; 3324 mvmvif->ps_disabled = false; 3325 iwl_mvm_rm_snif_sta(mvm, vif); 3326 break; 3327 case NL80211_IFTYPE_AP: 3328 /* This part is triggered only during CSA */ 3329 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3330 goto out; 3331 3332 mvmvif->csa_countdown = false; 3333 3334 /* Set CS bit on all the stations */ 3335 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3336 3337 /* Save blocked iface, the timeout is set on the next beacon */ 3338 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3339 3340 mvmvif->ap_ibss_active = false; 3341 break; 3342 case NL80211_IFTYPE_STATION: 3343 if (!switching_chanctx) 3344 break; 3345 3346 disabled_vif = vif; 3347 3348 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3349 break; 3350 default: 3351 break; 3352 } 3353 3354 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3355 iwl_mvm_binding_remove_vif(mvm, vif); 3356 3357 out: 3358 mvmvif->phy_ctxt = NULL; 3359 iwl_mvm_power_update_mac(mvm); 3360 } 3361 3362 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3363 struct ieee80211_vif *vif, 3364 struct ieee80211_chanctx_conf *ctx) 3365 { 3366 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3367 3368 mutex_lock(&mvm->mutex); 3369 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3370 mutex_unlock(&mvm->mutex); 3371 } 3372 3373 static int 3374 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3375 struct ieee80211_vif_chanctx_switch *vifs) 3376 { 3377 int ret; 3378 3379 mutex_lock(&mvm->mutex); 3380 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3381 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3382 3383 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3384 if (ret) { 3385 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3386 goto out_reassign; 3387 } 3388 3389 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3390 true); 3391 if (ret) { 3392 IWL_ERR(mvm, 3393 "failed to assign new_ctx during channel switch\n"); 3394 goto out_remove; 3395 } 3396 3397 /* we don't support TDLS during DCM - can be caused by channel switch */ 3398 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3399 iwl_mvm_teardown_tdls_peers(mvm); 3400 3401 goto out; 3402 3403 out_remove: 3404 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3405 3406 out_reassign: 3407 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3408 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3409 goto out_restart; 3410 } 3411 3412 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3413 true)) { 3414 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3415 goto out_restart; 3416 } 3417 3418 goto out; 3419 3420 out_restart: 3421 /* things keep failing, better restart the hw */ 3422 iwl_mvm_nic_restart(mvm, false); 3423 3424 out: 3425 mutex_unlock(&mvm->mutex); 3426 3427 return ret; 3428 } 3429 3430 static int 3431 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 3432 struct ieee80211_vif_chanctx_switch *vifs) 3433 { 3434 int ret; 3435 3436 mutex_lock(&mvm->mutex); 3437 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3438 3439 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3440 true); 3441 if (ret) { 3442 IWL_ERR(mvm, 3443 "failed to assign new_ctx during channel switch\n"); 3444 goto out_reassign; 3445 } 3446 3447 goto out; 3448 3449 out_reassign: 3450 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3451 true)) { 3452 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3453 goto out_restart; 3454 } 3455 3456 goto out; 3457 3458 out_restart: 3459 /* things keep failing, better restart the hw */ 3460 iwl_mvm_nic_restart(mvm, false); 3461 3462 out: 3463 mutex_unlock(&mvm->mutex); 3464 3465 return ret; 3466 } 3467 3468 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 3469 struct ieee80211_vif_chanctx_switch *vifs, 3470 int n_vifs, 3471 enum ieee80211_chanctx_switch_mode mode) 3472 { 3473 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3474 int ret; 3475 3476 /* we only support a single-vif right now */ 3477 if (n_vifs > 1) 3478 return -EOPNOTSUPP; 3479 3480 switch (mode) { 3481 case CHANCTX_SWMODE_SWAP_CONTEXTS: 3482 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 3483 break; 3484 case CHANCTX_SWMODE_REASSIGN_VIF: 3485 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 3486 break; 3487 default: 3488 ret = -EOPNOTSUPP; 3489 break; 3490 } 3491 3492 return ret; 3493 } 3494 3495 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 3496 struct ieee80211_sta *sta, 3497 bool set) 3498 { 3499 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3500 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3501 3502 if (!mvm_sta || !mvm_sta->vif) { 3503 IWL_ERR(mvm, "Station is not associated to a vif\n"); 3504 return -EINVAL; 3505 } 3506 3507 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 3508 } 3509 3510 #ifdef CONFIG_NL80211_TESTMODE 3511 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 3512 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 3513 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 3514 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 3515 }; 3516 3517 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 3518 struct ieee80211_vif *vif, 3519 void *data, int len) 3520 { 3521 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 3522 int err; 3523 u32 noa_duration; 3524 3525 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy); 3526 if (err) 3527 return err; 3528 3529 if (!tb[IWL_MVM_TM_ATTR_CMD]) 3530 return -EINVAL; 3531 3532 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 3533 case IWL_MVM_TM_CMD_SET_NOA: 3534 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 3535 !vif->bss_conf.enable_beacon || 3536 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 3537 return -EINVAL; 3538 3539 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 3540 if (noa_duration >= vif->bss_conf.beacon_int) 3541 return -EINVAL; 3542 3543 mvm->noa_duration = noa_duration; 3544 mvm->noa_vif = vif; 3545 3546 return iwl_mvm_update_quotas(mvm, false, NULL); 3547 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 3548 /* must be associated client vif - ignore authorized */ 3549 if (!vif || vif->type != NL80211_IFTYPE_STATION || 3550 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 3551 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 3552 return -EINVAL; 3553 3554 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 3555 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3556 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3557 } 3558 3559 return -EOPNOTSUPP; 3560 } 3561 3562 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 3563 struct ieee80211_vif *vif, 3564 void *data, int len) 3565 { 3566 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3567 int err; 3568 3569 mutex_lock(&mvm->mutex); 3570 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 3571 mutex_unlock(&mvm->mutex); 3572 3573 return err; 3574 } 3575 #endif 3576 3577 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 3578 struct ieee80211_vif *vif, 3579 struct ieee80211_channel_switch *chsw) 3580 { 3581 /* By implementing this operation, we prevent mac80211 from 3582 * starting its own channel switch timer, so that we can call 3583 * ieee80211_chswitch_done() ourselves at the right time 3584 * (which is when the absence time event starts). 3585 */ 3586 3587 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 3588 "dummy channel switch op\n"); 3589 } 3590 3591 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 3592 struct ieee80211_vif *vif, 3593 struct ieee80211_channel_switch *chsw) 3594 { 3595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3596 struct ieee80211_vif *csa_vif; 3597 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3598 u32 apply_time; 3599 int ret; 3600 3601 mutex_lock(&mvm->mutex); 3602 3603 mvmvif->csa_failed = false; 3604 3605 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 3606 chsw->chandef.center_freq1); 3607 3608 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH); 3609 3610 switch (vif->type) { 3611 case NL80211_IFTYPE_AP: 3612 csa_vif = 3613 rcu_dereference_protected(mvm->csa_vif, 3614 lockdep_is_held(&mvm->mutex)); 3615 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 3616 "Another CSA is already in progress")) { 3617 ret = -EBUSY; 3618 goto out_unlock; 3619 } 3620 3621 rcu_assign_pointer(mvm->csa_vif, vif); 3622 3623 if (WARN_ONCE(mvmvif->csa_countdown, 3624 "Previous CSA countdown didn't complete")) { 3625 ret = -EBUSY; 3626 goto out_unlock; 3627 } 3628 3629 break; 3630 case NL80211_IFTYPE_STATION: 3631 /* Schedule the time event to a bit before beacon 1, 3632 * to make sure we're in the new channel when the 3633 * GO/AP arrives. 3634 */ 3635 apply_time = chsw->device_timestamp + 3636 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 3637 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 3638 3639 if (chsw->block_tx) 3640 iwl_mvm_csa_client_absent(mvm, vif); 3641 3642 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 3643 apply_time); 3644 if (mvmvif->bf_data.bf_enabled) { 3645 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3646 if (ret) 3647 goto out_unlock; 3648 } 3649 3650 break; 3651 default: 3652 break; 3653 } 3654 3655 mvmvif->ps_disabled = true; 3656 3657 ret = iwl_mvm_power_update_ps(mvm); 3658 if (ret) 3659 goto out_unlock; 3660 3661 /* we won't be on this channel any longer */ 3662 iwl_mvm_teardown_tdls_peers(mvm); 3663 3664 out_unlock: 3665 mutex_unlock(&mvm->mutex); 3666 3667 return ret; 3668 } 3669 3670 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 3671 struct ieee80211_vif *vif) 3672 { 3673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3674 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3675 int ret; 3676 3677 mutex_lock(&mvm->mutex); 3678 3679 if (mvmvif->csa_failed) { 3680 mvmvif->csa_failed = false; 3681 ret = -EIO; 3682 goto out_unlock; 3683 } 3684 3685 if (vif->type == NL80211_IFTYPE_STATION) { 3686 struct iwl_mvm_sta *mvmsta; 3687 3688 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 3689 mvmvif->ap_sta_id); 3690 3691 if (WARN_ON(!mvmsta)) { 3692 ret = -EIO; 3693 goto out_unlock; 3694 } 3695 3696 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 3697 3698 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3699 3700 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3701 if (ret) 3702 goto out_unlock; 3703 3704 iwl_mvm_stop_session_protection(mvm, vif); 3705 } 3706 3707 mvmvif->ps_disabled = false; 3708 3709 ret = iwl_mvm_power_update_ps(mvm); 3710 3711 out_unlock: 3712 mutex_unlock(&mvm->mutex); 3713 3714 return ret; 3715 } 3716 3717 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 3718 struct ieee80211_vif *vif, u32 queues, bool drop) 3719 { 3720 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3721 struct iwl_mvm_vif *mvmvif; 3722 struct iwl_mvm_sta *mvmsta; 3723 struct ieee80211_sta *sta; 3724 int i; 3725 u32 msk = 0; 3726 3727 if (!vif || vif->type != NL80211_IFTYPE_STATION) 3728 return; 3729 3730 mutex_lock(&mvm->mutex); 3731 mvmvif = iwl_mvm_vif_from_mac80211(vif); 3732 3733 /* flush the AP-station and all TDLS peers */ 3734 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { 3735 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3736 lockdep_is_held(&mvm->mutex)); 3737 if (IS_ERR_OR_NULL(sta)) 3738 continue; 3739 3740 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3741 if (mvmsta->vif != vif) 3742 continue; 3743 3744 /* make sure only TDLS peers or the AP are flushed */ 3745 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 3746 3747 msk |= mvmsta->tfd_queue_msk; 3748 } 3749 3750 if (drop) { 3751 if (iwl_mvm_flush_tx_path(mvm, msk, 0)) 3752 IWL_ERR(mvm, "flush request fail\n"); 3753 mutex_unlock(&mvm->mutex); 3754 } else { 3755 mutex_unlock(&mvm->mutex); 3756 3757 /* this can take a while, and we may need/want other operations 3758 * to succeed while doing this, so do it without the mutex held 3759 */ 3760 iwl_trans_wait_tx_queue_empty(mvm->trans, msk); 3761 } 3762 } 3763 3764 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 3765 struct survey_info *survey) 3766 { 3767 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3768 int ret; 3769 3770 memset(survey, 0, sizeof(*survey)); 3771 3772 /* only support global statistics right now */ 3773 if (idx != 0) 3774 return -ENOENT; 3775 3776 if (fw_has_capa(&mvm->fw->ucode_capa, 3777 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 3778 return -ENOENT; 3779 3780 mutex_lock(&mvm->mutex); 3781 3782 if (mvm->ucode_loaded) { 3783 ret = iwl_mvm_request_statistics(mvm, false); 3784 if (ret) 3785 goto out; 3786 } 3787 3788 survey->filled = SURVEY_INFO_TIME | 3789 SURVEY_INFO_TIME_RX | 3790 SURVEY_INFO_TIME_TX | 3791 SURVEY_INFO_TIME_SCAN; 3792 survey->time = mvm->accu_radio_stats.on_time_rf + 3793 mvm->radio_stats.on_time_rf; 3794 do_div(survey->time, USEC_PER_MSEC); 3795 3796 survey->time_rx = mvm->accu_radio_stats.rx_time + 3797 mvm->radio_stats.rx_time; 3798 do_div(survey->time_rx, USEC_PER_MSEC); 3799 3800 survey->time_tx = mvm->accu_radio_stats.tx_time + 3801 mvm->radio_stats.tx_time; 3802 do_div(survey->time_tx, USEC_PER_MSEC); 3803 3804 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 3805 mvm->radio_stats.on_time_scan; 3806 do_div(survey->time_scan, USEC_PER_MSEC); 3807 3808 ret = 0; 3809 out: 3810 mutex_unlock(&mvm->mutex); 3811 return ret; 3812 } 3813 3814 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 3815 struct ieee80211_vif *vif, 3816 struct ieee80211_sta *sta, 3817 struct station_info *sinfo) 3818 { 3819 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3820 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3821 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3822 3823 if (fw_has_capa(&mvm->fw->ucode_capa, 3824 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 3825 return; 3826 3827 /* if beacon filtering isn't on mac80211 does it anyway */ 3828 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 3829 return; 3830 3831 if (!vif->bss_conf.assoc) 3832 return; 3833 3834 mutex_lock(&mvm->mutex); 3835 3836 if (mvmvif->ap_sta_id != mvmsta->sta_id) 3837 goto unlock; 3838 3839 if (iwl_mvm_request_statistics(mvm, false)) 3840 goto unlock; 3841 3842 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 3843 mvmvif->beacon_stats.accu_num_beacons; 3844 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX); 3845 if (mvmvif->beacon_stats.avg_signal) { 3846 /* firmware only reports a value after RXing a few beacons */ 3847 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 3848 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 3849 } 3850 unlock: 3851 mutex_unlock(&mvm->mutex); 3852 } 3853 3854 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 3855 struct ieee80211_vif *vif, 3856 const struct ieee80211_event *event) 3857 { 3858 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \ 3859 do { \ 3860 if ((_cnt) && --(_cnt)) \ 3861 break; \ 3862 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\ 3863 } while (0) 3864 3865 struct iwl_fw_dbg_trigger_tlv *trig; 3866 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 3867 3868 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 3869 return; 3870 3871 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 3872 trig_mlme = (void *)trig->data; 3873 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 3874 return; 3875 3876 if (event->u.mlme.data == ASSOC_EVENT) { 3877 if (event->u.mlme.status == MLME_DENIED) 3878 CHECK_MLME_TRIGGER(mvm, trig, buf, 3879 trig_mlme->stop_assoc_denied, 3880 "DENIED ASSOC: reason %d", 3881 event->u.mlme.reason); 3882 else if (event->u.mlme.status == MLME_TIMEOUT) 3883 CHECK_MLME_TRIGGER(mvm, trig, buf, 3884 trig_mlme->stop_assoc_timeout, 3885 "ASSOC TIMEOUT"); 3886 } else if (event->u.mlme.data == AUTH_EVENT) { 3887 if (event->u.mlme.status == MLME_DENIED) 3888 CHECK_MLME_TRIGGER(mvm, trig, buf, 3889 trig_mlme->stop_auth_denied, 3890 "DENIED AUTH: reason %d", 3891 event->u.mlme.reason); 3892 else if (event->u.mlme.status == MLME_TIMEOUT) 3893 CHECK_MLME_TRIGGER(mvm, trig, buf, 3894 trig_mlme->stop_auth_timeout, 3895 "AUTH TIMEOUT"); 3896 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 3897 CHECK_MLME_TRIGGER(mvm, trig, buf, 3898 trig_mlme->stop_rx_deauth, 3899 "DEAUTH RX %d", event->u.mlme.reason); 3900 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 3901 CHECK_MLME_TRIGGER(mvm, trig, buf, 3902 trig_mlme->stop_tx_deauth, 3903 "DEAUTH TX %d", event->u.mlme.reason); 3904 } 3905 #undef CHECK_MLME_TRIGGER 3906 } 3907 3908 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 3909 struct ieee80211_vif *vif, 3910 const struct ieee80211_event *event) 3911 { 3912 struct iwl_fw_dbg_trigger_tlv *trig; 3913 struct iwl_fw_dbg_trigger_ba *ba_trig; 3914 3915 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 3916 return; 3917 3918 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 3919 ba_trig = (void *)trig->data; 3920 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 3921 return; 3922 3923 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 3924 return; 3925 3926 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 3927 "BAR received from %pM, tid %d, ssn %d", 3928 event->u.ba.sta->addr, event->u.ba.tid, 3929 event->u.ba.ssn); 3930 } 3931 3932 static void 3933 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 3934 struct ieee80211_vif *vif, 3935 const struct ieee80211_event *event) 3936 { 3937 struct iwl_fw_dbg_trigger_tlv *trig; 3938 struct iwl_fw_dbg_trigger_ba *ba_trig; 3939 3940 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 3941 return; 3942 3943 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 3944 ba_trig = (void *)trig->data; 3945 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 3946 return; 3947 3948 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid))) 3949 return; 3950 3951 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 3952 "Frame from %pM timed out, tid %d", 3953 event->u.ba.sta->addr, event->u.ba.tid); 3954 } 3955 3956 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 3957 struct ieee80211_vif *vif, 3958 const struct ieee80211_event *event) 3959 { 3960 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3961 3962 switch (event->type) { 3963 case MLME_EVENT: 3964 iwl_mvm_event_mlme_callback(mvm, vif, event); 3965 break; 3966 case BAR_RX_EVENT: 3967 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 3968 break; 3969 case BA_FRAME_TIMEOUT: 3970 iwl_mvm_event_frame_timeout_callback(mvm, vif, event); 3971 break; 3972 default: 3973 break; 3974 } 3975 } 3976 3977 const struct ieee80211_ops iwl_mvm_hw_ops = { 3978 .tx = iwl_mvm_mac_tx, 3979 .ampdu_action = iwl_mvm_mac_ampdu_action, 3980 .start = iwl_mvm_mac_start, 3981 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 3982 .stop = iwl_mvm_mac_stop, 3983 .add_interface = iwl_mvm_mac_add_interface, 3984 .remove_interface = iwl_mvm_mac_remove_interface, 3985 .config = iwl_mvm_mac_config, 3986 .prepare_multicast = iwl_mvm_prepare_multicast, 3987 .configure_filter = iwl_mvm_configure_filter, 3988 .config_iface_filter = iwl_mvm_config_iface_filter, 3989 .bss_info_changed = iwl_mvm_bss_info_changed, 3990 .hw_scan = iwl_mvm_mac_hw_scan, 3991 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 3992 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 3993 .sta_state = iwl_mvm_mac_sta_state, 3994 .sta_notify = iwl_mvm_mac_sta_notify, 3995 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 3996 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 3997 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 3998 .sta_rc_update = iwl_mvm_sta_rc_update, 3999 .conf_tx = iwl_mvm_mac_conf_tx, 4000 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4001 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4002 .flush = iwl_mvm_mac_flush, 4003 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4004 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4005 .set_key = iwl_mvm_mac_set_key, 4006 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4007 .remain_on_channel = iwl_mvm_roc, 4008 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4009 .add_chanctx = iwl_mvm_add_chanctx, 4010 .remove_chanctx = iwl_mvm_remove_chanctx, 4011 .change_chanctx = iwl_mvm_change_chanctx, 4012 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4013 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4014 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4015 4016 .start_ap = iwl_mvm_start_ap_ibss, 4017 .stop_ap = iwl_mvm_stop_ap_ibss, 4018 .join_ibss = iwl_mvm_start_ap_ibss, 4019 .leave_ibss = iwl_mvm_stop_ap_ibss, 4020 4021 .set_tim = iwl_mvm_set_tim, 4022 4023 .channel_switch = iwl_mvm_channel_switch, 4024 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4025 .post_channel_switch = iwl_mvm_post_channel_switch, 4026 4027 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4028 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4029 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4030 4031 .event_callback = iwl_mvm_mac_event_callback, 4032 4033 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4034 4035 #ifdef CONFIG_PM_SLEEP 4036 /* look at d3.c */ 4037 .suspend = iwl_mvm_suspend, 4038 .resume = iwl_mvm_resume, 4039 .set_wakeup = iwl_mvm_set_wakeup, 4040 .set_rekey_data = iwl_mvm_set_rekey_data, 4041 #if IS_ENABLED(CONFIG_IPV6) 4042 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4043 #endif 4044 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4045 #endif 4046 .get_survey = iwl_mvm_mac_get_survey, 4047 .sta_statistics = iwl_mvm_mac_sta_statistics, 4048 }; 4049