1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 #include <linux/kernel.h> 65 #include <linux/slab.h> 66 #include <linux/skbuff.h> 67 #include <linux/netdevice.h> 68 #include <linux/etherdevice.h> 69 #include <linux/ip.h> 70 #include <linux/if_arp.h> 71 #include <linux/time.h> 72 #include <net/mac80211.h> 73 #include <net/ieee80211_radiotap.h> 74 #include <net/tcp.h> 75 76 #include "iwl-op-mode.h" 77 #include "iwl-io.h" 78 #include "mvm.h" 79 #include "sta.h" 80 #include "time-event.h" 81 #include "iwl-eeprom-parse.h" 82 #include "iwl-phy-db.h" 83 #include "testmode.h" 84 #include "fw/error-dump.h" 85 #include "iwl-prph.h" 86 #include "iwl-nvm-parse.h" 87 88 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 89 { 90 .max = 1, 91 .types = BIT(NL80211_IFTYPE_STATION), 92 }, 93 { 94 .max = 1, 95 .types = BIT(NL80211_IFTYPE_AP) | 96 BIT(NL80211_IFTYPE_P2P_CLIENT) | 97 BIT(NL80211_IFTYPE_P2P_GO), 98 }, 99 { 100 .max = 1, 101 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 102 }, 103 }; 104 105 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 106 { 107 .num_different_channels = 2, 108 .max_interfaces = 3, 109 .limits = iwl_mvm_limits, 110 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 111 }, 112 }; 113 114 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 115 /* 116 * Use the reserved field to indicate magic values. 117 * these values will only be used internally by the driver, 118 * and won't make it to the fw (reserved will be 0). 119 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 120 * be the vif's ip address. in case there is not a single 121 * ip address (0, or more than 1), this attribute will 122 * be skipped. 123 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 124 * the LSB bytes of the vif's mac address 125 */ 126 enum { 127 BC_FILTER_MAGIC_NONE = 0, 128 BC_FILTER_MAGIC_IP, 129 BC_FILTER_MAGIC_MAC, 130 }; 131 132 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 133 { 134 /* arp */ 135 .discard = 0, 136 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 137 .attrs = { 138 { 139 /* frame type - arp, hw type - ethernet */ 140 .offset_type = 141 BCAST_FILTER_OFFSET_PAYLOAD_START, 142 .offset = sizeof(rfc1042_header), 143 .val = cpu_to_be32(0x08060001), 144 .mask = cpu_to_be32(0xffffffff), 145 }, 146 { 147 /* arp dest ip */ 148 .offset_type = 149 BCAST_FILTER_OFFSET_PAYLOAD_START, 150 .offset = sizeof(rfc1042_header) + 2 + 151 sizeof(struct arphdr) + 152 ETH_ALEN + sizeof(__be32) + 153 ETH_ALEN, 154 .mask = cpu_to_be32(0xffffffff), 155 /* mark it as special field */ 156 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 157 }, 158 }, 159 }, 160 { 161 /* dhcp offer bcast */ 162 .discard = 0, 163 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 164 .attrs = { 165 { 166 /* udp dest port - 68 (bootp client)*/ 167 .offset_type = BCAST_FILTER_OFFSET_IP_END, 168 .offset = offsetof(struct udphdr, dest), 169 .val = cpu_to_be32(0x00440000), 170 .mask = cpu_to_be32(0xffff0000), 171 }, 172 { 173 /* dhcp - lsb bytes of client hw address */ 174 .offset_type = BCAST_FILTER_OFFSET_IP_END, 175 .offset = 38, 176 .mask = cpu_to_be32(0xffffffff), 177 /* mark it as special field */ 178 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 179 }, 180 }, 181 }, 182 /* last filter must be empty */ 183 {}, 184 }; 185 #endif 186 187 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 188 { 189 if (!iwl_mvm_is_d0i3_supported(mvm)) 190 return; 191 192 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); 193 spin_lock_bh(&mvm->refs_lock); 194 mvm->refs[ref_type]++; 195 spin_unlock_bh(&mvm->refs_lock); 196 iwl_trans_ref(mvm->trans); 197 } 198 199 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 200 { 201 if (!iwl_mvm_is_d0i3_supported(mvm)) 202 return; 203 204 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); 205 spin_lock_bh(&mvm->refs_lock); 206 if (WARN_ON(!mvm->refs[ref_type])) { 207 spin_unlock_bh(&mvm->refs_lock); 208 return; 209 } 210 mvm->refs[ref_type]--; 211 spin_unlock_bh(&mvm->refs_lock); 212 iwl_trans_unref(mvm->trans); 213 } 214 215 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, 216 enum iwl_mvm_ref_type except_ref) 217 { 218 int i, j; 219 220 if (!iwl_mvm_is_d0i3_supported(mvm)) 221 return; 222 223 spin_lock_bh(&mvm->refs_lock); 224 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 225 if (except_ref == i || !mvm->refs[i]) 226 continue; 227 228 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", 229 i, mvm->refs[i]); 230 for (j = 0; j < mvm->refs[i]; j++) 231 iwl_trans_unref(mvm->trans); 232 mvm->refs[i] = 0; 233 } 234 spin_unlock_bh(&mvm->refs_lock); 235 } 236 237 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) 238 { 239 int i; 240 bool taken = false; 241 242 if (!iwl_mvm_is_d0i3_supported(mvm)) 243 return true; 244 245 spin_lock_bh(&mvm->refs_lock); 246 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 247 if (mvm->refs[i]) { 248 taken = true; 249 break; 250 } 251 } 252 spin_unlock_bh(&mvm->refs_lock); 253 254 return taken; 255 } 256 257 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 258 { 259 iwl_mvm_ref(mvm, ref_type); 260 261 if (!wait_event_timeout(mvm->d0i3_exit_waitq, 262 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), 263 HZ)) { 264 WARN_ON_ONCE(1); 265 iwl_mvm_unref(mvm, ref_type); 266 return -EIO; 267 } 268 269 return 0; 270 } 271 272 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 273 { 274 int i; 275 276 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 277 for (i = 0; i < NUM_PHY_CTX; i++) { 278 mvm->phy_ctxts[i].id = i; 279 mvm->phy_ctxts[i].ref = 0; 280 } 281 } 282 283 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 284 const char *alpha2, 285 enum iwl_mcc_source src_id, 286 bool *changed) 287 { 288 struct ieee80211_regdomain *regd = NULL; 289 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 290 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 291 struct iwl_mcc_update_resp *resp; 292 293 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 294 295 lockdep_assert_held(&mvm->mutex); 296 297 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 298 if (IS_ERR_OR_NULL(resp)) { 299 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 300 PTR_ERR_OR_ZERO(resp)); 301 goto out; 302 } 303 304 if (changed) 305 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE); 306 307 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 308 __le32_to_cpu(resp->n_channels), 309 resp->channels, 310 __le16_to_cpu(resp->mcc), 311 __le16_to_cpu(resp->geo_info)); 312 /* Store the return source id */ 313 src_id = resp->source_id; 314 kfree(resp); 315 if (IS_ERR_OR_NULL(regd)) { 316 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 317 PTR_ERR_OR_ZERO(regd)); 318 goto out; 319 } 320 321 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 322 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 323 mvm->lar_regdom_set = true; 324 mvm->mcc_src = src_id; 325 326 out: 327 return regd; 328 } 329 330 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 331 { 332 bool changed; 333 struct ieee80211_regdomain *regd; 334 335 if (!iwl_mvm_is_lar_supported(mvm)) 336 return; 337 338 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 339 if (!IS_ERR_OR_NULL(regd)) { 340 /* only update the regulatory core if changed */ 341 if (changed) 342 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 343 344 kfree(regd); 345 } 346 } 347 348 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 349 bool *changed) 350 { 351 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 352 iwl_mvm_is_wifi_mcc_supported(mvm) ? 353 MCC_SOURCE_GET_CURRENT : 354 MCC_SOURCE_OLD_FW, changed); 355 } 356 357 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 358 { 359 enum iwl_mcc_source used_src; 360 struct ieee80211_regdomain *regd; 361 int ret; 362 bool changed; 363 const struct ieee80211_regdomain *r = 364 rtnl_dereference(mvm->hw->wiphy->regd); 365 366 if (!r) 367 return -ENOENT; 368 369 /* save the last source in case we overwrite it below */ 370 used_src = mvm->mcc_src; 371 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 372 /* Notify the firmware we support wifi location updates */ 373 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 374 if (!IS_ERR_OR_NULL(regd)) 375 kfree(regd); 376 } 377 378 /* Now set our last stored MCC and source */ 379 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 380 &changed); 381 if (IS_ERR_OR_NULL(regd)) 382 return -EIO; 383 384 /* update cfg80211 if the regdomain was changed */ 385 if (changed) 386 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 387 else 388 ret = 0; 389 390 kfree(regd); 391 return ret; 392 } 393 394 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 395 { 396 struct ieee80211_hw *hw = mvm->hw; 397 int num_mac, ret, i; 398 static const u32 mvm_ciphers[] = { 399 WLAN_CIPHER_SUITE_WEP40, 400 WLAN_CIPHER_SUITE_WEP104, 401 WLAN_CIPHER_SUITE_TKIP, 402 WLAN_CIPHER_SUITE_CCMP, 403 }; 404 405 /* Tell mac80211 our characteristics */ 406 ieee80211_hw_set(hw, SIGNAL_DBM); 407 ieee80211_hw_set(hw, SPECTRUM_MGMT); 408 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 409 ieee80211_hw_set(hw, QUEUE_CONTROL); 410 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 411 ieee80211_hw_set(hw, SUPPORTS_PS); 412 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 413 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 414 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 415 ieee80211_hw_set(hw, CONNECTION_MONITOR); 416 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 417 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 418 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 419 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 420 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 421 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 422 423 if (iwl_mvm_has_tlc_offload(mvm)) { 424 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 425 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 426 } 427 428 if (iwl_mvm_has_new_rx_api(mvm)) 429 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 430 431 if (fw_has_capa(&mvm->fw->ucode_capa, 432 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 433 ieee80211_hw_set(hw, AP_LINK_PS); 434 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 435 /* 436 * we absolutely need this for the new TX API since that comes 437 * with many more queues than the current code can deal with 438 * for station powersave 439 */ 440 return -EINVAL; 441 } 442 443 if (mvm->trans->num_rx_queues > 1) 444 ieee80211_hw_set(hw, USES_RSS); 445 446 if (mvm->trans->max_skb_frags) 447 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 448 449 hw->queues = IEEE80211_MAX_QUEUES; 450 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 451 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 452 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 453 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 454 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 455 456 hw->radiotap_timestamp.units_pos = 457 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 458 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 459 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 460 hw->radiotap_timestamp.accuracy = 22; 461 462 if (!iwl_mvm_has_tlc_offload(mvm)) 463 hw->rate_control_algorithm = RS_NAME; 464 465 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 466 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 467 468 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 469 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 470 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 471 hw->wiphy->cipher_suites = mvm->ciphers; 472 473 if (iwl_mvm_has_new_rx_api(mvm)) { 474 mvm->ciphers[hw->wiphy->n_cipher_suites] = 475 WLAN_CIPHER_SUITE_GCMP; 476 hw->wiphy->n_cipher_suites++; 477 mvm->ciphers[hw->wiphy->n_cipher_suites] = 478 WLAN_CIPHER_SUITE_GCMP_256; 479 hw->wiphy->n_cipher_suites++; 480 } 481 482 /* Enable 11w if software crypto is not enabled (as the 483 * firmware will interpret some mgmt packets, so enabling it 484 * with software crypto isn't safe). 485 */ 486 if (!iwlwifi_mod_params.swcrypto) { 487 ieee80211_hw_set(hw, MFP_CAPABLE); 488 mvm->ciphers[hw->wiphy->n_cipher_suites] = 489 WLAN_CIPHER_SUITE_AES_CMAC; 490 hw->wiphy->n_cipher_suites++; 491 if (iwl_mvm_has_new_rx_api(mvm)) { 492 mvm->ciphers[hw->wiphy->n_cipher_suites] = 493 WLAN_CIPHER_SUITE_BIP_GMAC_128; 494 hw->wiphy->n_cipher_suites++; 495 mvm->ciphers[hw->wiphy->n_cipher_suites] = 496 WLAN_CIPHER_SUITE_BIP_GMAC_256; 497 hw->wiphy->n_cipher_suites++; 498 } 499 } 500 501 /* currently FW API supports only one optional cipher scheme */ 502 if (mvm->fw->cs[0].cipher) { 503 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 504 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 505 506 mvm->hw->n_cipher_schemes = 1; 507 508 cs->cipher = le32_to_cpu(fwcs->cipher); 509 cs->iftype = BIT(NL80211_IFTYPE_STATION); 510 cs->hdr_len = fwcs->hdr_len; 511 cs->pn_len = fwcs->pn_len; 512 cs->pn_off = fwcs->pn_off; 513 cs->key_idx_off = fwcs->key_idx_off; 514 cs->key_idx_mask = fwcs->key_idx_mask; 515 cs->key_idx_shift = fwcs->key_idx_shift; 516 cs->mic_len = fwcs->mic_len; 517 518 mvm->hw->cipher_schemes = mvm->cs; 519 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 520 hw->wiphy->n_cipher_suites++; 521 } 522 523 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 524 hw->wiphy->features |= 525 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 526 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 527 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 528 529 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 530 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 531 hw->chanctx_data_size = sizeof(u16); 532 533 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 534 BIT(NL80211_IFTYPE_P2P_CLIENT) | 535 BIT(NL80211_IFTYPE_AP) | 536 BIT(NL80211_IFTYPE_P2P_GO) | 537 BIT(NL80211_IFTYPE_P2P_DEVICE) | 538 BIT(NL80211_IFTYPE_ADHOC); 539 540 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 541 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 542 if (iwl_mvm_is_lar_supported(mvm)) 543 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 544 else 545 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 546 REGULATORY_DISABLE_BEACON_HINTS; 547 548 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 549 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 550 551 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 552 hw->wiphy->n_iface_combinations = 553 ARRAY_SIZE(iwl_mvm_iface_combinations); 554 555 hw->wiphy->max_remain_on_channel_duration = 10000; 556 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 557 558 /* Extract MAC address */ 559 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 560 hw->wiphy->addresses = mvm->addresses; 561 hw->wiphy->n_addresses = 1; 562 563 /* Extract additional MAC addresses if available */ 564 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 565 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 566 567 for (i = 1; i < num_mac; i++) { 568 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 569 ETH_ALEN); 570 mvm->addresses[i].addr[5]++; 571 hw->wiphy->n_addresses++; 572 } 573 574 iwl_mvm_reset_phy_ctxts(mvm); 575 576 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 577 578 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 579 580 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 581 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 582 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 583 584 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 585 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 586 else 587 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 588 589 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 590 hw->wiphy->bands[NL80211_BAND_2GHZ] = 591 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 592 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 593 hw->wiphy->bands[NL80211_BAND_5GHZ] = 594 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 595 596 if (fw_has_capa(&mvm->fw->ucode_capa, 597 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 598 fw_has_api(&mvm->fw->ucode_capa, 599 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 600 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 601 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 602 } 603 604 hw->wiphy->hw_version = mvm->trans->hw_id; 605 606 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 607 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 608 else 609 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 610 611 hw->wiphy->max_sched_scan_reqs = 1; 612 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 613 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 614 /* we create the 802.11 header and zero length SSID IE. */ 615 hw->wiphy->max_sched_scan_ie_len = 616 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 617 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 618 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 619 620 /* 621 * the firmware uses u8 for num of iterations, but 0xff is saved for 622 * infinite loop, so the maximum number of iterations is actually 254. 623 */ 624 hw->wiphy->max_sched_scan_plan_iterations = 254; 625 626 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 627 NL80211_FEATURE_LOW_PRIORITY_SCAN | 628 NL80211_FEATURE_P2P_GO_OPPPS | 629 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 630 NL80211_FEATURE_DYNAMIC_SMPS | 631 NL80211_FEATURE_STATIC_SMPS | 632 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 633 634 if (fw_has_capa(&mvm->fw->ucode_capa, 635 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 636 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 637 if (fw_has_capa(&mvm->fw->ucode_capa, 638 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 639 hw->wiphy->features |= NL80211_FEATURE_QUIET; 640 641 if (fw_has_capa(&mvm->fw->ucode_capa, 642 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 643 hw->wiphy->features |= 644 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 645 646 if (fw_has_capa(&mvm->fw->ucode_capa, 647 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 648 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 649 650 if (fw_has_api(&mvm->fw->ucode_capa, 651 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 652 wiphy_ext_feature_set(hw->wiphy, 653 NL80211_EXT_FEATURE_SCAN_START_TIME); 654 wiphy_ext_feature_set(hw->wiphy, 655 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 656 wiphy_ext_feature_set(hw->wiphy, 657 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 658 } 659 660 if (iwl_mvm_is_oce_supported(mvm)) { 661 wiphy_ext_feature_set(hw->wiphy, 662 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 663 wiphy_ext_feature_set(hw->wiphy, 664 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 665 wiphy_ext_feature_set(hw->wiphy, 666 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 667 wiphy_ext_feature_set(hw->wiphy, 668 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 669 } 670 671 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 672 673 #ifdef CONFIG_PM_SLEEP 674 if (iwl_mvm_is_d0i3_supported(mvm) && 675 device_can_wakeup(mvm->trans->dev)) { 676 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 677 hw->wiphy->wowlan = &mvm->wowlan; 678 } 679 680 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec && 681 mvm->trans->ops->d3_suspend && 682 mvm->trans->ops->d3_resume && 683 device_can_wakeup(mvm->trans->dev)) { 684 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 685 WIPHY_WOWLAN_DISCONNECT | 686 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 687 WIPHY_WOWLAN_RFKILL_RELEASE | 688 WIPHY_WOWLAN_NET_DETECT; 689 if (!iwlwifi_mod_params.swcrypto) 690 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 691 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 692 WIPHY_WOWLAN_4WAY_HANDSHAKE; 693 694 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 695 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 696 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 697 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 698 hw->wiphy->wowlan = &mvm->wowlan; 699 } 700 #endif 701 702 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 703 /* assign default bcast filtering configuration */ 704 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 705 #endif 706 707 ret = iwl_mvm_leds_init(mvm); 708 if (ret) 709 return ret; 710 711 if (fw_has_capa(&mvm->fw->ucode_capa, 712 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 713 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 714 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 715 ieee80211_hw_set(hw, TDLS_WIDER_BW); 716 } 717 718 if (fw_has_capa(&mvm->fw->ucode_capa, 719 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 720 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 721 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 722 } 723 724 hw->netdev_features |= mvm->cfg->features; 725 if (!iwl_mvm_is_csum_supported(mvm)) { 726 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 727 NETIF_F_RXCSUM); 728 /* We may support SW TX CSUM */ 729 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 730 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 731 } 732 733 ret = ieee80211_register_hw(mvm->hw); 734 if (ret) 735 iwl_mvm_leds_exit(mvm); 736 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 737 738 if (mvm->cfg->vht_mu_mimo_supported) 739 wiphy_ext_feature_set(hw->wiphy, 740 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 741 742 return ret; 743 } 744 745 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 746 struct ieee80211_sta *sta, 747 struct sk_buff *skb) 748 { 749 struct iwl_mvm_sta *mvmsta; 750 bool defer = false; 751 752 /* 753 * double check the IN_D0I3 flag both before and after 754 * taking the spinlock, in order to prevent taking 755 * the spinlock when not needed. 756 */ 757 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 758 return false; 759 760 spin_lock(&mvm->d0i3_tx_lock); 761 /* 762 * testing the flag again ensures the skb dequeue 763 * loop (on d0i3 exit) hasn't run yet. 764 */ 765 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 766 goto out; 767 768 mvmsta = iwl_mvm_sta_from_mac80211(sta); 769 if (mvmsta->sta_id == IWL_MVM_INVALID_STA || 770 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 771 goto out; 772 773 __skb_queue_tail(&mvm->d0i3_tx, skb); 774 ieee80211_stop_queues(mvm->hw); 775 776 /* trigger wakeup */ 777 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 778 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 779 780 defer = true; 781 out: 782 spin_unlock(&mvm->d0i3_tx_lock); 783 return defer; 784 } 785 786 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 787 struct ieee80211_tx_control *control, 788 struct sk_buff *skb) 789 { 790 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 791 struct ieee80211_sta *sta = control->sta; 792 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 793 struct ieee80211_hdr *hdr = (void *)skb->data; 794 795 if (iwl_mvm_is_radio_killed(mvm)) { 796 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 797 goto drop; 798 } 799 800 if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && 801 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 802 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 803 goto drop; 804 805 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 806 if ((info->control.vif->type == NL80211_IFTYPE_AP || 807 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 808 ieee80211_is_mgmt(hdr->frame_control) && 809 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 810 sta = NULL; 811 812 if (sta) { 813 if (iwl_mvm_defer_tx(mvm, sta, skb)) 814 return; 815 if (iwl_mvm_tx_skb(mvm, skb, sta)) 816 goto drop; 817 return; 818 } 819 820 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 821 goto drop; 822 return; 823 drop: 824 ieee80211_free_txskb(hw, skb); 825 } 826 827 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) 828 { 829 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) 830 return false; 831 return true; 832 } 833 834 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) 835 { 836 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) 837 return false; 838 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) 839 return true; 840 841 /* enabled by default */ 842 return true; 843 } 844 845 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 846 do { \ 847 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 848 break; \ 849 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 850 } while (0) 851 852 static void 853 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 854 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 855 enum ieee80211_ampdu_mlme_action action) 856 { 857 struct iwl_fw_dbg_trigger_tlv *trig; 858 struct iwl_fw_dbg_trigger_ba *ba_trig; 859 860 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 861 return; 862 863 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 864 ba_trig = (void *)trig->data; 865 866 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 867 ieee80211_vif_to_wdev(vif), trig)) 868 return; 869 870 switch (action) { 871 case IEEE80211_AMPDU_TX_OPERATIONAL: { 872 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 873 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 874 875 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 876 "TX AGG START: MAC %pM tid %d ssn %d\n", 877 sta->addr, tid, tid_data->ssn); 878 break; 879 } 880 case IEEE80211_AMPDU_TX_STOP_CONT: 881 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 882 "TX AGG STOP: MAC %pM tid %d\n", 883 sta->addr, tid); 884 break; 885 case IEEE80211_AMPDU_RX_START: 886 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 887 "RX AGG START: MAC %pM tid %d ssn %d\n", 888 sta->addr, tid, rx_ba_ssn); 889 break; 890 case IEEE80211_AMPDU_RX_STOP: 891 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 892 "RX AGG STOP: MAC %pM tid %d\n", 893 sta->addr, tid); 894 break; 895 default: 896 break; 897 } 898 } 899 900 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 901 struct ieee80211_vif *vif, 902 struct ieee80211_ampdu_params *params) 903 { 904 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 905 int ret; 906 bool tx_agg_ref = false; 907 struct ieee80211_sta *sta = params->sta; 908 enum ieee80211_ampdu_mlme_action action = params->action; 909 u16 tid = params->tid; 910 u16 *ssn = ¶ms->ssn; 911 u16 buf_size = params->buf_size; 912 bool amsdu = params->amsdu; 913 u16 timeout = params->timeout; 914 915 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 916 sta->addr, tid, action); 917 918 if (!(mvm->nvm_data->sku_cap_11n_enable)) 919 return -EACCES; 920 921 /* return from D0i3 before starting a new Tx aggregation */ 922 switch (action) { 923 case IEEE80211_AMPDU_TX_START: 924 case IEEE80211_AMPDU_TX_STOP_CONT: 925 case IEEE80211_AMPDU_TX_STOP_FLUSH: 926 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 927 case IEEE80211_AMPDU_TX_OPERATIONAL: 928 /* 929 * for tx start, wait synchronously until D0i3 exit to 930 * get the correct sequence number for the tid. 931 * additionally, some other ampdu actions use direct 932 * target access, which is not handled automatically 933 * by the trans layer (unlike commands), so wait for 934 * d0i3 exit in these cases as well. 935 */ 936 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 937 if (ret) 938 return ret; 939 940 tx_agg_ref = true; 941 break; 942 default: 943 break; 944 } 945 946 mutex_lock(&mvm->mutex); 947 948 switch (action) { 949 case IEEE80211_AMPDU_RX_START: 950 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 951 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 952 struct iwl_mvm_vif *mvmvif; 953 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 954 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 955 956 mdata->opened_rx_ba_sessions = true; 957 mvmvif = iwl_mvm_vif_from_mac80211(vif); 958 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 959 } 960 if (!iwl_enable_rx_ampdu(mvm->cfg)) { 961 ret = -EINVAL; 962 break; 963 } 964 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 965 timeout); 966 break; 967 case IEEE80211_AMPDU_RX_STOP: 968 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 969 timeout); 970 break; 971 case IEEE80211_AMPDU_TX_START: 972 if (!iwl_enable_tx_ampdu(mvm->cfg)) { 973 ret = -EINVAL; 974 break; 975 } 976 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 977 break; 978 case IEEE80211_AMPDU_TX_STOP_CONT: 979 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 980 break; 981 case IEEE80211_AMPDU_TX_STOP_FLUSH: 982 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 983 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 984 break; 985 case IEEE80211_AMPDU_TX_OPERATIONAL: 986 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 987 buf_size, amsdu); 988 break; 989 default: 990 WARN_ON_ONCE(1); 991 ret = -EINVAL; 992 break; 993 } 994 995 if (!ret) { 996 u16 rx_ba_ssn = 0; 997 998 if (action == IEEE80211_AMPDU_RX_START) 999 rx_ba_ssn = *ssn; 1000 1001 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1002 rx_ba_ssn, action); 1003 } 1004 mutex_unlock(&mvm->mutex); 1005 1006 /* 1007 * If the tid is marked as started, we won't use it for offloaded 1008 * traffic on the next D0i3 entry. It's safe to unref. 1009 */ 1010 if (tx_agg_ref) 1011 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 1012 1013 return ret; 1014 } 1015 1016 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1017 struct ieee80211_vif *vif) 1018 { 1019 struct iwl_mvm *mvm = data; 1020 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1021 1022 mvmvif->uploaded = false; 1023 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1024 1025 spin_lock_bh(&mvm->time_event_lock); 1026 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1027 spin_unlock_bh(&mvm->time_event_lock); 1028 1029 mvmvif->phy_ctxt = NULL; 1030 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1031 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1032 } 1033 1034 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1035 { 1036 /* clear the D3 reconfig, we only need it to avoid dumping a 1037 * firmware coredump on reconfiguration, we shouldn't do that 1038 * on D3->D0 transition 1039 */ 1040 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) { 1041 mvm->fwrt.dump.desc = &iwl_dump_desc_assert; 1042 iwl_fw_error_dump(&mvm->fwrt); 1043 } 1044 1045 /* cleanup all stale references (scan, roc), but keep the 1046 * ucode_down ref until reconfig is complete 1047 */ 1048 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 1049 1050 iwl_mvm_stop_device(mvm); 1051 1052 mvm->scan_status = 0; 1053 mvm->ps_disabled = false; 1054 mvm->calibrating = false; 1055 1056 /* just in case one was running */ 1057 iwl_mvm_cleanup_roc_te(mvm); 1058 ieee80211_remain_on_channel_expired(mvm->hw); 1059 1060 /* 1061 * cleanup all interfaces, even inactive ones, as some might have 1062 * gone down during the HW restart 1063 */ 1064 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1065 1066 mvm->p2p_device_vif = NULL; 1067 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1068 1069 iwl_mvm_reset_phy_ctxts(mvm); 1070 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1071 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames)); 1072 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1073 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1074 1075 ieee80211_wake_queues(mvm->hw); 1076 1077 /* clear any stale d0i3 state */ 1078 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1079 1080 mvm->vif_count = 0; 1081 mvm->rx_ba_sessions = 0; 1082 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1083 mvm->monitor_on = false; 1084 1085 /* keep statistics ticking */ 1086 iwl_mvm_accu_radio_stats(mvm); 1087 } 1088 1089 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1090 { 1091 int ret; 1092 1093 lockdep_assert_held(&mvm->mutex); 1094 1095 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1096 /* 1097 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1098 * so later code will - from now on - see that we're doing it. 1099 */ 1100 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1101 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1102 /* Clean up some internal and mac80211 state on restart */ 1103 iwl_mvm_restart_cleanup(mvm); 1104 } else { 1105 /* Hold the reference to prevent runtime suspend while 1106 * the start procedure runs. It's a bit confusing 1107 * that the UCODE_DOWN reference is taken, but it just 1108 * means "UCODE is not UP yet". ( TODO: rename this 1109 * reference). 1110 */ 1111 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1112 } 1113 ret = iwl_mvm_up(mvm); 1114 1115 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1116 /* Something went wrong - we need to finish some cleanup 1117 * that normally iwl_mvm_mac_restart_complete() below 1118 * would do. 1119 */ 1120 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1121 #ifdef CONFIG_PM 1122 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1123 #endif 1124 } 1125 1126 return ret; 1127 } 1128 1129 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1130 { 1131 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1132 int ret; 1133 1134 /* Some hw restart cleanups must not hold the mutex */ 1135 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1136 /* 1137 * Make sure we are out of d0i3. This is needed 1138 * to make sure the reference accounting is correct 1139 * (and there is no stale d0i3_exit_work). 1140 */ 1141 wait_event_timeout(mvm->d0i3_exit_waitq, 1142 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1143 &mvm->status), 1144 HZ); 1145 } 1146 1147 mutex_lock(&mvm->mutex); 1148 ret = __iwl_mvm_mac_start(mvm); 1149 mutex_unlock(&mvm->mutex); 1150 1151 return ret; 1152 } 1153 1154 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1155 { 1156 int ret; 1157 1158 mutex_lock(&mvm->mutex); 1159 1160 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1161 #ifdef CONFIG_PM 1162 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1163 #endif 1164 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1165 if (ret) 1166 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1167 ret); 1168 1169 /* allow transport/FW low power modes */ 1170 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1171 1172 /* 1173 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1174 * of packets the FW sent out, so we must reconnect. 1175 */ 1176 iwl_mvm_teardown_tdls_peers(mvm); 1177 1178 mutex_unlock(&mvm->mutex); 1179 } 1180 1181 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1182 { 1183 if (iwl_mvm_is_d0i3_supported(mvm) && 1184 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1185 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1186 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1187 &mvm->status), 1188 HZ), 1189 "D0i3 exit on resume timed out\n"); 1190 } 1191 1192 static void 1193 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1194 enum ieee80211_reconfig_type reconfig_type) 1195 { 1196 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1197 1198 switch (reconfig_type) { 1199 case IEEE80211_RECONFIG_TYPE_RESTART: 1200 iwl_mvm_restart_complete(mvm); 1201 break; 1202 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1203 iwl_mvm_resume_complete(mvm); 1204 break; 1205 } 1206 } 1207 1208 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1209 { 1210 lockdep_assert_held(&mvm->mutex); 1211 1212 /* firmware counters are obviously reset now, but we shouldn't 1213 * partially track so also clear the fw_reset_accu counters. 1214 */ 1215 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1216 1217 /* async_handlers_wk is now blocked */ 1218 1219 /* 1220 * The work item could be running or queued if the 1221 * ROC time event stops just as we get here. 1222 */ 1223 flush_work(&mvm->roc_done_wk); 1224 1225 iwl_mvm_stop_device(mvm); 1226 1227 iwl_mvm_async_handlers_purge(mvm); 1228 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1229 1230 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1231 iwl_mvm_del_aux_sta(mvm); 1232 1233 /* 1234 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() 1235 * won't be called in this case). 1236 * But make sure to cleanup interfaces that have gone down before/during 1237 * HW restart was requested. 1238 */ 1239 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1240 ieee80211_iterate_interfaces(mvm->hw, 0, 1241 iwl_mvm_cleanup_iterator, mvm); 1242 1243 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1244 * make sure there's nothing left there and warn if any is found. 1245 */ 1246 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1247 int i; 1248 1249 for (i = 0; i < mvm->max_scans; i++) { 1250 if (WARN_ONCE(mvm->scan_uid_status[i], 1251 "UMAC scan UID %d status was not cleaned\n", 1252 i)) 1253 mvm->scan_uid_status[i] = 0; 1254 } 1255 } 1256 } 1257 1258 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1259 { 1260 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1261 1262 flush_work(&mvm->d0i3_exit_work); 1263 flush_work(&mvm->async_handlers_wk); 1264 flush_work(&mvm->add_stream_wk); 1265 1266 /* 1267 * Lock and clear the firmware running bit here already, so that 1268 * new commands coming in elsewhere, e.g. from debugfs, will not 1269 * be able to proceed. This is important here because one of those 1270 * debugfs files causes the firmware dump to be triggered, and if we 1271 * don't stop debugfs accesses before canceling that it could be 1272 * retriggered after we flush it but before we've cleared the bit. 1273 */ 1274 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1275 1276 iwl_fw_cancel_dump(&mvm->fwrt); 1277 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1278 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1279 iwl_fw_free_dump_desc(&mvm->fwrt); 1280 1281 mutex_lock(&mvm->mutex); 1282 __iwl_mvm_mac_stop(mvm); 1283 mutex_unlock(&mvm->mutex); 1284 1285 /* 1286 * The worker might have been waiting for the mutex, let it run and 1287 * discover that its list is now empty. 1288 */ 1289 cancel_work_sync(&mvm->async_handlers_wk); 1290 } 1291 1292 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1293 { 1294 u16 i; 1295 1296 lockdep_assert_held(&mvm->mutex); 1297 1298 for (i = 0; i < NUM_PHY_CTX; i++) 1299 if (!mvm->phy_ctxts[i].ref) 1300 return &mvm->phy_ctxts[i]; 1301 1302 IWL_ERR(mvm, "No available PHY context\n"); 1303 return NULL; 1304 } 1305 1306 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1307 s16 tx_power) 1308 { 1309 int len; 1310 union { 1311 struct iwl_dev_tx_power_cmd v5; 1312 struct iwl_dev_tx_power_cmd_v4 v4; 1313 } cmd = { 1314 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1315 .v5.v3.mac_context_id = 1316 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1317 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1318 }; 1319 1320 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1321 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1322 1323 if (fw_has_api(&mvm->fw->ucode_capa, 1324 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1325 len = sizeof(cmd.v5); 1326 else if (fw_has_capa(&mvm->fw->ucode_capa, 1327 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1328 len = sizeof(cmd.v4); 1329 else 1330 len = sizeof(cmd.v4.v3); 1331 1332 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1333 } 1334 1335 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1336 struct ieee80211_vif *vif) 1337 { 1338 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1339 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1340 int ret; 1341 1342 mvmvif->mvm = mvm; 1343 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1344 1345 /* 1346 * make sure D0i3 exit is completed, otherwise a target access 1347 * during tx queue configuration could be done when still in 1348 * D0i3 state. 1349 */ 1350 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1351 if (ret) 1352 return ret; 1353 1354 /* 1355 * Not much to do here. The stack will not allow interface 1356 * types or combinations that we didn't advertise, so we 1357 * don't really have to check the types. 1358 */ 1359 1360 mutex_lock(&mvm->mutex); 1361 1362 /* make sure that beacon statistics don't go backwards with FW reset */ 1363 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1364 mvmvif->beacon_stats.accu_num_beacons += 1365 mvmvif->beacon_stats.num_beacons; 1366 1367 /* Allocate resources for the MAC context, and add it to the fw */ 1368 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1369 if (ret) 1370 goto out_unlock; 1371 1372 /* Counting number of interfaces is needed for legacy PM */ 1373 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1374 mvm->vif_count++; 1375 1376 /* 1377 * The AP binding flow can be done only after the beacon 1378 * template is configured (which happens only in the mac80211 1379 * start_ap() flow), and adding the broadcast station can happen 1380 * only after the binding. 1381 * In addition, since modifying the MAC before adding a bcast 1382 * station is not allowed by the FW, delay the adding of MAC context to 1383 * the point where we can also add the bcast station. 1384 * In short: there's not much we can do at this point, other than 1385 * allocating resources :) 1386 */ 1387 if (vif->type == NL80211_IFTYPE_AP || 1388 vif->type == NL80211_IFTYPE_ADHOC) { 1389 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1390 if (ret) { 1391 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1392 goto out_release; 1393 } 1394 1395 /* 1396 * Only queue for this station is the mcast queue, 1397 * which shouldn't be in TFD mask anyway 1398 */ 1399 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1400 0, vif->type, 1401 IWL_STA_MULTICAST); 1402 if (ret) 1403 goto out_release; 1404 1405 iwl_mvm_vif_dbgfs_register(mvm, vif); 1406 goto out_unlock; 1407 } 1408 1409 mvmvif->features |= hw->netdev_features; 1410 1411 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1412 if (ret) 1413 goto out_release; 1414 1415 ret = iwl_mvm_power_update_mac(mvm); 1416 if (ret) 1417 goto out_remove_mac; 1418 1419 /* beacon filtering */ 1420 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1421 if (ret) 1422 goto out_remove_mac; 1423 1424 if (!mvm->bf_allowed_vif && 1425 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1426 mvm->bf_allowed_vif = mvmvif; 1427 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1428 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1429 } 1430 1431 /* 1432 * P2P_DEVICE interface does not have a channel context assigned to it, 1433 * so a dedicated PHY context is allocated to it and the corresponding 1434 * MAC context is bound to it at this stage. 1435 */ 1436 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1437 1438 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1439 if (!mvmvif->phy_ctxt) { 1440 ret = -ENOSPC; 1441 goto out_free_bf; 1442 } 1443 1444 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1445 ret = iwl_mvm_binding_add_vif(mvm, vif); 1446 if (ret) 1447 goto out_unref_phy; 1448 1449 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1450 if (ret) 1451 goto out_unbind; 1452 1453 /* Save a pointer to p2p device vif, so it can later be used to 1454 * update the p2p device MAC when a GO is started/stopped */ 1455 mvm->p2p_device_vif = vif; 1456 } 1457 1458 iwl_mvm_tcm_add_vif(mvm, vif); 1459 1460 if (vif->type == NL80211_IFTYPE_MONITOR) 1461 mvm->monitor_on = true; 1462 1463 iwl_mvm_vif_dbgfs_register(mvm, vif); 1464 goto out_unlock; 1465 1466 out_unbind: 1467 iwl_mvm_binding_remove_vif(mvm, vif); 1468 out_unref_phy: 1469 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1470 out_free_bf: 1471 if (mvm->bf_allowed_vif == mvmvif) { 1472 mvm->bf_allowed_vif = NULL; 1473 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1474 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1475 } 1476 out_remove_mac: 1477 mvmvif->phy_ctxt = NULL; 1478 iwl_mvm_mac_ctxt_remove(mvm, vif); 1479 out_release: 1480 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1481 mvm->vif_count--; 1482 out_unlock: 1483 mutex_unlock(&mvm->mutex); 1484 1485 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1486 1487 return ret; 1488 } 1489 1490 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1491 struct ieee80211_vif *vif) 1492 { 1493 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1494 /* 1495 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1496 * We assume here that all the packets sent to the OFFCHANNEL 1497 * queue are sent in ROC session. 1498 */ 1499 flush_work(&mvm->roc_done_wk); 1500 } 1501 } 1502 1503 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1504 struct ieee80211_vif *vif) 1505 { 1506 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1507 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1508 struct iwl_probe_resp_data *probe_data; 1509 1510 iwl_mvm_prepare_mac_removal(mvm, vif); 1511 1512 if (!(vif->type == NL80211_IFTYPE_AP || 1513 vif->type == NL80211_IFTYPE_ADHOC)) 1514 iwl_mvm_tcm_rm_vif(mvm, vif); 1515 1516 mutex_lock(&mvm->mutex); 1517 1518 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1519 lockdep_is_held(&mvm->mutex)); 1520 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1521 if (probe_data) 1522 kfree_rcu(probe_data, rcu_head); 1523 1524 if (mvm->bf_allowed_vif == mvmvif) { 1525 mvm->bf_allowed_vif = NULL; 1526 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1527 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1528 } 1529 1530 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1531 1532 /* 1533 * For AP/GO interface, the tear down of the resources allocated to the 1534 * interface is be handled as part of the stop_ap flow. 1535 */ 1536 if (vif->type == NL80211_IFTYPE_AP || 1537 vif->type == NL80211_IFTYPE_ADHOC) { 1538 #ifdef CONFIG_NL80211_TESTMODE 1539 if (vif == mvm->noa_vif) { 1540 mvm->noa_vif = NULL; 1541 mvm->noa_duration = 0; 1542 } 1543 #endif 1544 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1545 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1546 goto out_release; 1547 } 1548 1549 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1550 mvm->p2p_device_vif = NULL; 1551 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1552 iwl_mvm_binding_remove_vif(mvm, vif); 1553 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1554 mvmvif->phy_ctxt = NULL; 1555 } 1556 1557 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1558 mvm->vif_count--; 1559 1560 iwl_mvm_power_update_mac(mvm); 1561 iwl_mvm_mac_ctxt_remove(mvm, vif); 1562 1563 if (vif->type == NL80211_IFTYPE_MONITOR) 1564 mvm->monitor_on = false; 1565 1566 out_release: 1567 mutex_unlock(&mvm->mutex); 1568 } 1569 1570 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1571 { 1572 return 0; 1573 } 1574 1575 struct iwl_mvm_mc_iter_data { 1576 struct iwl_mvm *mvm; 1577 int port_id; 1578 }; 1579 1580 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1581 struct ieee80211_vif *vif) 1582 { 1583 struct iwl_mvm_mc_iter_data *data = _data; 1584 struct iwl_mvm *mvm = data->mvm; 1585 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1586 struct iwl_host_cmd hcmd = { 1587 .id = MCAST_FILTER_CMD, 1588 .flags = CMD_ASYNC, 1589 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1590 }; 1591 int ret, len; 1592 1593 /* if we don't have free ports, mcast frames will be dropped */ 1594 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1595 return; 1596 1597 if (vif->type != NL80211_IFTYPE_STATION || 1598 !vif->bss_conf.assoc) 1599 return; 1600 1601 cmd->port_id = data->port_id++; 1602 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1603 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1604 1605 hcmd.len[0] = len; 1606 hcmd.data[0] = cmd; 1607 1608 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1609 if (ret) 1610 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1611 } 1612 1613 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1614 { 1615 struct iwl_mvm_mc_iter_data iter_data = { 1616 .mvm = mvm, 1617 }; 1618 1619 lockdep_assert_held(&mvm->mutex); 1620 1621 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1622 return; 1623 1624 ieee80211_iterate_active_interfaces_atomic( 1625 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1626 iwl_mvm_mc_iface_iterator, &iter_data); 1627 } 1628 1629 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1630 struct netdev_hw_addr_list *mc_list) 1631 { 1632 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1633 struct iwl_mcast_filter_cmd *cmd; 1634 struct netdev_hw_addr *addr; 1635 int addr_count; 1636 bool pass_all; 1637 int len; 1638 1639 addr_count = netdev_hw_addr_list_count(mc_list); 1640 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1641 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1642 if (pass_all) 1643 addr_count = 0; 1644 1645 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1646 cmd = kzalloc(len, GFP_ATOMIC); 1647 if (!cmd) 1648 return 0; 1649 1650 if (pass_all) { 1651 cmd->pass_all = 1; 1652 return (u64)(unsigned long)cmd; 1653 } 1654 1655 netdev_hw_addr_list_for_each(addr, mc_list) { 1656 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1657 cmd->count, addr->addr); 1658 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1659 addr->addr, ETH_ALEN); 1660 cmd->count++; 1661 } 1662 1663 return (u64)(unsigned long)cmd; 1664 } 1665 1666 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1667 unsigned int changed_flags, 1668 unsigned int *total_flags, 1669 u64 multicast) 1670 { 1671 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1672 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1673 1674 mutex_lock(&mvm->mutex); 1675 1676 /* replace previous configuration */ 1677 kfree(mvm->mcast_filter_cmd); 1678 mvm->mcast_filter_cmd = cmd; 1679 1680 if (!cmd) 1681 goto out; 1682 1683 if (changed_flags & FIF_ALLMULTI) 1684 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1685 1686 if (cmd->pass_all) 1687 cmd->count = 0; 1688 1689 iwl_mvm_recalc_multicast(mvm); 1690 out: 1691 mutex_unlock(&mvm->mutex); 1692 *total_flags = 0; 1693 } 1694 1695 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1696 struct ieee80211_vif *vif, 1697 unsigned int filter_flags, 1698 unsigned int changed_flags) 1699 { 1700 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1701 1702 /* We support only filter for probe requests */ 1703 if (!(changed_flags & FIF_PROBE_REQ)) 1704 return; 1705 1706 /* Supported only for p2p client interfaces */ 1707 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1708 !vif->p2p) 1709 return; 1710 1711 mutex_lock(&mvm->mutex); 1712 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1713 mutex_unlock(&mvm->mutex); 1714 } 1715 1716 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1717 struct iwl_bcast_iter_data { 1718 struct iwl_mvm *mvm; 1719 struct iwl_bcast_filter_cmd *cmd; 1720 u8 current_filter; 1721 }; 1722 1723 static void 1724 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1725 const struct iwl_fw_bcast_filter *in_filter, 1726 struct iwl_fw_bcast_filter *out_filter) 1727 { 1728 struct iwl_fw_bcast_filter_attr *attr; 1729 int i; 1730 1731 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1732 1733 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1734 attr = &out_filter->attrs[i]; 1735 1736 if (!attr->mask) 1737 break; 1738 1739 switch (attr->reserved1) { 1740 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1741 if (vif->bss_conf.arp_addr_cnt != 1) { 1742 attr->mask = 0; 1743 continue; 1744 } 1745 1746 attr->val = vif->bss_conf.arp_addr_list[0]; 1747 break; 1748 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1749 attr->val = *(__be32 *)&vif->addr[2]; 1750 break; 1751 default: 1752 break; 1753 } 1754 attr->reserved1 = 0; 1755 out_filter->num_attrs++; 1756 } 1757 } 1758 1759 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1760 struct ieee80211_vif *vif) 1761 { 1762 struct iwl_bcast_iter_data *data = _data; 1763 struct iwl_mvm *mvm = data->mvm; 1764 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1765 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1766 struct iwl_fw_bcast_mac *bcast_mac; 1767 int i; 1768 1769 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1770 return; 1771 1772 bcast_mac = &cmd->macs[mvmvif->id]; 1773 1774 /* 1775 * enable filtering only for associated stations, but not for P2P 1776 * Clients 1777 */ 1778 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1779 !vif->bss_conf.assoc) 1780 return; 1781 1782 bcast_mac->default_discard = 1; 1783 1784 /* copy all configured filters */ 1785 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1786 /* 1787 * Make sure we don't exceed our filters limit. 1788 * if there is still a valid filter to be configured, 1789 * be on the safe side and just allow bcast for this mac. 1790 */ 1791 if (WARN_ON_ONCE(data->current_filter >= 1792 ARRAY_SIZE(cmd->filters))) { 1793 bcast_mac->default_discard = 0; 1794 bcast_mac->attached_filters = 0; 1795 break; 1796 } 1797 1798 iwl_mvm_set_bcast_filter(vif, 1799 &mvm->bcast_filters[i], 1800 &cmd->filters[data->current_filter]); 1801 1802 /* skip current filter if it contains no attributes */ 1803 if (!cmd->filters[data->current_filter].num_attrs) 1804 continue; 1805 1806 /* attach the filter to current mac */ 1807 bcast_mac->attached_filters |= 1808 cpu_to_le16(BIT(data->current_filter)); 1809 1810 data->current_filter++; 1811 } 1812 } 1813 1814 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1815 struct iwl_bcast_filter_cmd *cmd) 1816 { 1817 struct iwl_bcast_iter_data iter_data = { 1818 .mvm = mvm, 1819 .cmd = cmd, 1820 }; 1821 1822 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1823 return false; 1824 1825 memset(cmd, 0, sizeof(*cmd)); 1826 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1827 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1828 1829 #ifdef CONFIG_IWLWIFI_DEBUGFS 1830 /* use debugfs filters/macs if override is configured */ 1831 if (mvm->dbgfs_bcast_filtering.override) { 1832 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1833 sizeof(cmd->filters)); 1834 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1835 sizeof(cmd->macs)); 1836 return true; 1837 } 1838 #endif 1839 1840 /* if no filters are configured, do nothing */ 1841 if (!mvm->bcast_filters) 1842 return false; 1843 1844 /* configure and attach these filters for each associated sta vif */ 1845 ieee80211_iterate_active_interfaces( 1846 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1847 iwl_mvm_bcast_filter_iterator, &iter_data); 1848 1849 return true; 1850 } 1851 1852 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1853 { 1854 struct iwl_bcast_filter_cmd cmd; 1855 1856 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1857 return 0; 1858 1859 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1860 return 0; 1861 1862 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1863 sizeof(cmd), &cmd); 1864 } 1865 #else 1866 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1867 { 1868 return 0; 1869 } 1870 #endif 1871 1872 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1873 struct ieee80211_vif *vif) 1874 { 1875 struct iwl_mu_group_mgmt_cmd cmd = {}; 1876 1877 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1878 WLAN_MEMBERSHIP_LEN); 1879 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1880 WLAN_USER_POSITION_LEN); 1881 1882 return iwl_mvm_send_cmd_pdu(mvm, 1883 WIDE_ID(DATA_PATH_GROUP, 1884 UPDATE_MU_GROUPS_CMD), 1885 0, sizeof(cmd), &cmd); 1886 } 1887 1888 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1889 struct ieee80211_vif *vif) 1890 { 1891 if (vif->mu_mimo_owner) { 1892 struct iwl_mu_group_mgmt_notif *notif = _data; 1893 1894 /* 1895 * MU-MIMO Group Id action frame is little endian. We treat 1896 * the data received from firmware as if it came from the 1897 * action frame, so no conversion is needed. 1898 */ 1899 ieee80211_update_mu_groups(vif, 1900 (u8 *)¬if->membership_status, 1901 (u8 *)¬if->user_position); 1902 } 1903 } 1904 1905 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1906 struct iwl_rx_cmd_buffer *rxb) 1907 { 1908 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1909 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1910 1911 ieee80211_iterate_active_interfaces_atomic( 1912 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1913 iwl_mvm_mu_mimo_iface_iterator, notif); 1914 } 1915 1916 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1917 { 1918 u8 byte_num = ppe_pos_bit / 8; 1919 u8 bit_num = ppe_pos_bit % 8; 1920 u8 residue_bits; 1921 u8 res; 1922 1923 if (bit_num <= 5) 1924 return (ppe[byte_num] >> bit_num) & 1925 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 1926 1927 /* 1928 * If bit_num > 5, we have to combine bits with next byte. 1929 * Calculate how many bits we need to take from current byte (called 1930 * here "residue_bits"), and add them to bits from next byte. 1931 */ 1932 1933 residue_bits = 8 - bit_num; 1934 1935 res = (ppe[byte_num + 1] & 1936 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 1937 residue_bits; 1938 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 1939 1940 return res; 1941 } 1942 1943 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 1944 struct ieee80211_vif *vif, u8 sta_id) 1945 { 1946 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1947 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 1948 .sta_id = sta_id, 1949 .tid_limit = IWL_MAX_TID_COUNT, 1950 .bss_color = vif->bss_conf.bss_color, 1951 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 1952 .frame_time_rts_th = 1953 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 1954 }; 1955 struct ieee80211_sta *sta; 1956 u32 flags; 1957 int i; 1958 1959 rcu_read_lock(); 1960 1961 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 1962 if (IS_ERR(sta)) { 1963 rcu_read_unlock(); 1964 WARN(1, "Can't find STA to configure HE\n"); 1965 return; 1966 } 1967 1968 if (!sta->he_cap.has_he) { 1969 rcu_read_unlock(); 1970 return; 1971 } 1972 1973 flags = 0; 1974 1975 /* HTC flags */ 1976 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 1977 IEEE80211_HE_MAC_CAP0_HTC_HE) 1978 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 1979 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 1980 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 1981 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 1982 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 1983 u8 link_adap = 1984 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 1985 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 1986 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 1987 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 1988 1989 if (link_adap == 2) 1990 sta_ctxt_cmd.htc_flags |= 1991 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 1992 else if (link_adap == 3) 1993 sta_ctxt_cmd.htc_flags |= 1994 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 1995 } 1996 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 1997 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 1998 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 1999 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2000 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2001 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2002 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2003 2004 /* If PPE Thresholds exist, parse them into a FW-familiar format */ 2005 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2006 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2007 u8 nss = (sta->he_cap.ppe_thres[0] & 2008 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2009 u8 ru_index_bitmap = 2010 (sta->he_cap.ppe_thres[0] & 2011 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2012 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2013 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2014 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2015 2016 /* 2017 * FW currently supports only nss == MAX_HE_SUPP_NSS 2018 * 2019 * If nss > MAX: we can ignore values we don't support 2020 * If nss < MAX: we can set zeros in other streams 2021 */ 2022 if (nss > MAX_HE_SUPP_NSS) { 2023 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2024 MAX_HE_SUPP_NSS); 2025 nss = MAX_HE_SUPP_NSS; 2026 } 2027 2028 for (i = 0; i < nss; i++) { 2029 u8 ru_index_tmp = ru_index_bitmap << 1; 2030 u8 bw; 2031 2032 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2033 ru_index_tmp >>= 1; 2034 if (!(ru_index_tmp & 1)) 2035 continue; 2036 2037 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2038 iwl_mvm_he_get_ppe_val(ppe, 2039 ppe_pos_bit); 2040 ppe_pos_bit += 2041 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2042 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2043 iwl_mvm_he_get_ppe_val(ppe, 2044 ppe_pos_bit); 2045 ppe_pos_bit += 2046 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2047 } 2048 } 2049 2050 flags |= STA_CTXT_HE_PACKET_EXT; 2051 } 2052 rcu_read_unlock(); 2053 2054 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2055 flags |= STA_CTXT_HE_MU_EDCA_CW; 2056 for (i = 0; i < AC_NUM; i++) { 2057 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2058 &mvmvif->queue_params[i].mu_edca_param_rec; 2059 2060 if (!mvmvif->queue_params[i].mu_edca) { 2061 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2062 break; 2063 } 2064 2065 sta_ctxt_cmd.trig_based_txf[i].cwmin = 2066 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2067 sta_ctxt_cmd.trig_based_txf[i].cwmax = 2068 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2069 sta_ctxt_cmd.trig_based_txf[i].aifsn = 2070 cpu_to_le16(mu_edca->aifsn); 2071 sta_ctxt_cmd.trig_based_txf[i].mu_time = 2072 cpu_to_le16(mu_edca->mu_edca_timer); 2073 } 2074 2075 if (vif->bss_conf.multi_sta_back_32bit) 2076 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2077 2078 if (vif->bss_conf.ack_enabled) 2079 flags |= STA_CTXT_HE_ACK_ENABLED; 2080 2081 if (vif->bss_conf.uora_exists) { 2082 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2083 2084 sta_ctxt_cmd.rand_alloc_ecwmin = 2085 vif->bss_conf.uora_ocw_range & 0x7; 2086 sta_ctxt_cmd.rand_alloc_ecwmax = 2087 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2088 } 2089 2090 /* TODO: support Multi BSSID IE */ 2091 2092 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2093 2094 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2095 DATA_PATH_GROUP, 0), 2096 0, sizeof(sta_ctxt_cmd), &sta_ctxt_cmd)) 2097 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2098 } 2099 2100 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2101 struct ieee80211_vif *vif, 2102 struct ieee80211_bss_conf *bss_conf, 2103 u32 changes) 2104 { 2105 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2106 int ret; 2107 2108 /* 2109 * Re-calculate the tsf id, as the master-slave relations depend on the 2110 * beacon interval, which was not known when the station interface was 2111 * added. 2112 */ 2113 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2114 if (vif->bss_conf.he_support && 2115 !iwlwifi_mod_params.disable_11ax) 2116 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2117 2118 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2119 } 2120 2121 /* 2122 * If we're not associated yet, take the (new) BSSID before associating 2123 * so the firmware knows. If we're already associated, then use the old 2124 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2125 * branch for disassociation below. 2126 */ 2127 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2128 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2129 2130 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2131 if (ret) 2132 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2133 2134 /* after sending it once, adopt mac80211 data */ 2135 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2136 mvmvif->associated = bss_conf->assoc; 2137 2138 if (changes & BSS_CHANGED_ASSOC) { 2139 if (bss_conf->assoc) { 2140 /* clear statistics to get clean beacon counter */ 2141 iwl_mvm_request_statistics(mvm, true); 2142 memset(&mvmvif->beacon_stats, 0, 2143 sizeof(mvmvif->beacon_stats)); 2144 2145 /* add quota for this interface */ 2146 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2147 if (ret) { 2148 IWL_ERR(mvm, "failed to update quotas\n"); 2149 return; 2150 } 2151 2152 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2153 &mvm->status)) { 2154 /* 2155 * If we're restarting then the firmware will 2156 * obviously have lost synchronisation with 2157 * the AP. It will attempt to synchronise by 2158 * itself, but we can make it more reliable by 2159 * scheduling a session protection time event. 2160 * 2161 * The firmware needs to receive a beacon to 2162 * catch up with synchronisation, use 110% of 2163 * the beacon interval. 2164 * 2165 * Set a large maximum delay to allow for more 2166 * than a single interface. 2167 */ 2168 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2169 iwl_mvm_protect_session(mvm, vif, dur, dur, 2170 5 * dur, false); 2171 } 2172 2173 iwl_mvm_sf_update(mvm, vif, false); 2174 iwl_mvm_power_vif_assoc(mvm, vif); 2175 if (vif->p2p) { 2176 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 2177 iwl_mvm_update_smps(mvm, vif, 2178 IWL_MVM_SMPS_REQ_PROT, 2179 IEEE80211_SMPS_DYNAMIC); 2180 } 2181 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2182 /* 2183 * If update fails - SF might be running in associated 2184 * mode while disassociated - which is forbidden. 2185 */ 2186 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 2187 "Failed to update SF upon disassociation\n"); 2188 2189 /* 2190 * If we get an assert during the connection (after the 2191 * station has been added, but before the vif is set 2192 * to associated), mac80211 will re-add the station and 2193 * then configure the vif. Since the vif is not 2194 * associated, we would remove the station here and 2195 * this would fail the recovery. 2196 */ 2197 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2198 &mvm->status)) { 2199 /* 2200 * Remove AP station now that 2201 * the MAC is unassoc 2202 */ 2203 ret = iwl_mvm_rm_sta_id(mvm, vif, 2204 mvmvif->ap_sta_id); 2205 if (ret) 2206 IWL_ERR(mvm, 2207 "failed to remove AP station\n"); 2208 2209 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 2210 mvm->d0i3_ap_sta_id = 2211 IWL_MVM_INVALID_STA; 2212 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2213 } 2214 2215 /* remove quota for this interface */ 2216 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2217 if (ret) 2218 IWL_ERR(mvm, "failed to update quotas\n"); 2219 2220 if (vif->p2p) 2221 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 2222 2223 /* this will take the cleared BSSID from bss_conf */ 2224 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2225 if (ret) 2226 IWL_ERR(mvm, 2227 "failed to update MAC %pM (clear after unassoc)\n", 2228 vif->addr); 2229 } 2230 2231 /* 2232 * The firmware tracks the MU-MIMO group on its own. 2233 * However, on HW restart we should restore this data. 2234 */ 2235 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2236 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2237 ret = iwl_mvm_update_mu_groups(mvm, vif); 2238 if (ret) 2239 IWL_ERR(mvm, 2240 "failed to update VHT MU_MIMO groups\n"); 2241 } 2242 2243 iwl_mvm_recalc_multicast(mvm); 2244 iwl_mvm_configure_bcast_filter(mvm); 2245 2246 /* reset rssi values */ 2247 mvmvif->bf_data.ave_beacon_signal = 0; 2248 2249 iwl_mvm_bt_coex_vif_change(mvm); 2250 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2251 IEEE80211_SMPS_AUTOMATIC); 2252 if (fw_has_capa(&mvm->fw->ucode_capa, 2253 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2254 iwl_mvm_config_scan(mvm); 2255 } 2256 2257 if (changes & BSS_CHANGED_BEACON_INFO) { 2258 /* 2259 * We received a beacon from the associated AP so 2260 * remove the session protection. 2261 */ 2262 iwl_mvm_stop_session_protection(mvm, vif); 2263 2264 iwl_mvm_sf_update(mvm, vif, false); 2265 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2266 } 2267 2268 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2269 /* 2270 * Send power command on every beacon change, 2271 * because we may have not enabled beacon abort yet. 2272 */ 2273 BSS_CHANGED_BEACON_INFO)) { 2274 ret = iwl_mvm_power_update_mac(mvm); 2275 if (ret) 2276 IWL_ERR(mvm, "failed to update power mode\n"); 2277 } 2278 2279 if (changes & BSS_CHANGED_TXPOWER) { 2280 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2281 bss_conf->txpower); 2282 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2283 } 2284 2285 if (changes & BSS_CHANGED_CQM) { 2286 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2287 /* reset cqm events tracking */ 2288 mvmvif->bf_data.last_cqm_event = 0; 2289 if (mvmvif->bf_data.bf_enabled) { 2290 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2291 if (ret) 2292 IWL_ERR(mvm, 2293 "failed to update CQM thresholds\n"); 2294 } 2295 } 2296 2297 if (changes & BSS_CHANGED_ARP_FILTER) { 2298 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2299 iwl_mvm_configure_bcast_filter(mvm); 2300 } 2301 } 2302 2303 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2304 struct ieee80211_vif *vif) 2305 { 2306 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2307 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2308 int ret; 2309 2310 /* 2311 * iwl_mvm_mac_ctxt_add() might read directly from the device 2312 * (the system time), so make sure it is available. 2313 */ 2314 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2315 if (ret) 2316 return ret; 2317 2318 mutex_lock(&mvm->mutex); 2319 2320 /* Send the beacon template */ 2321 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2322 if (ret) 2323 goto out_unlock; 2324 2325 /* 2326 * Re-calculate the tsf id, as the master-slave relations depend on the 2327 * beacon interval, which was not known when the AP interface was added. 2328 */ 2329 if (vif->type == NL80211_IFTYPE_AP) 2330 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2331 2332 mvmvif->ap_assoc_sta_count = 0; 2333 2334 /* Add the mac context */ 2335 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2336 if (ret) 2337 goto out_unlock; 2338 2339 /* Perform the binding */ 2340 ret = iwl_mvm_binding_add_vif(mvm, vif); 2341 if (ret) 2342 goto out_remove; 2343 2344 /* 2345 * This is not very nice, but the simplest: 2346 * For older FWs adding the mcast sta before the bcast station may 2347 * cause assert 0x2b00. 2348 * This is fixed in later FW so make the order of removal depend on 2349 * the TLV 2350 */ 2351 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2352 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2353 if (ret) 2354 goto out_unbind; 2355 /* 2356 * Send the bcast station. At this stage the TBTT and DTIM time 2357 * events are added and applied to the scheduler 2358 */ 2359 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2360 if (ret) { 2361 iwl_mvm_rm_mcast_sta(mvm, vif); 2362 goto out_unbind; 2363 } 2364 } else { 2365 /* 2366 * Send the bcast station. At this stage the TBTT and DTIM time 2367 * events are added and applied to the scheduler 2368 */ 2369 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2370 if (ret) 2371 goto out_unbind; 2372 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2373 if (ret) { 2374 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2375 goto out_unbind; 2376 } 2377 } 2378 2379 /* must be set before quota calculations */ 2380 mvmvif->ap_ibss_active = true; 2381 2382 /* power updated needs to be done before quotas */ 2383 iwl_mvm_power_update_mac(mvm); 2384 2385 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2386 if (ret) 2387 goto out_quota_failed; 2388 2389 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2390 if (vif->p2p && mvm->p2p_device_vif) 2391 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2392 2393 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2394 2395 iwl_mvm_bt_coex_vif_change(mvm); 2396 2397 /* we don't support TDLS during DCM */ 2398 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2399 iwl_mvm_teardown_tdls_peers(mvm); 2400 2401 goto out_unlock; 2402 2403 out_quota_failed: 2404 iwl_mvm_power_update_mac(mvm); 2405 mvmvif->ap_ibss_active = false; 2406 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2407 iwl_mvm_rm_mcast_sta(mvm, vif); 2408 out_unbind: 2409 iwl_mvm_binding_remove_vif(mvm, vif); 2410 out_remove: 2411 iwl_mvm_mac_ctxt_remove(mvm, vif); 2412 out_unlock: 2413 mutex_unlock(&mvm->mutex); 2414 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2415 return ret; 2416 } 2417 2418 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2419 struct ieee80211_vif *vif) 2420 { 2421 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2422 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2423 2424 iwl_mvm_prepare_mac_removal(mvm, vif); 2425 2426 mutex_lock(&mvm->mutex); 2427 2428 /* Handle AP stop while in CSA */ 2429 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2430 iwl_mvm_remove_time_event(mvm, mvmvif, 2431 &mvmvif->time_event_data); 2432 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2433 mvmvif->csa_countdown = false; 2434 } 2435 2436 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2437 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2438 mvm->csa_tx_block_bcn_timeout = 0; 2439 } 2440 2441 mvmvif->ap_ibss_active = false; 2442 mvm->ap_last_beacon_gp2 = 0; 2443 2444 iwl_mvm_bt_coex_vif_change(mvm); 2445 2446 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2447 2448 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2449 if (vif->p2p && mvm->p2p_device_vif) 2450 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2451 2452 iwl_mvm_update_quotas(mvm, false, NULL); 2453 2454 /* 2455 * This is not very nice, but the simplest: 2456 * For older FWs removing the mcast sta before the bcast station may 2457 * cause assert 0x2b00. 2458 * This is fixed in later FW (which will stop beaconing when removing 2459 * bcast station). 2460 * So make the order of removal depend on the TLV 2461 */ 2462 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2463 iwl_mvm_rm_mcast_sta(mvm, vif); 2464 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2465 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2466 iwl_mvm_rm_mcast_sta(mvm, vif); 2467 iwl_mvm_binding_remove_vif(mvm, vif); 2468 2469 iwl_mvm_power_update_mac(mvm); 2470 2471 iwl_mvm_mac_ctxt_remove(mvm, vif); 2472 2473 kfree(mvmvif->ap_wep_key); 2474 mvmvif->ap_wep_key = NULL; 2475 2476 mutex_unlock(&mvm->mutex); 2477 } 2478 2479 static void 2480 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2481 struct ieee80211_vif *vif, 2482 struct ieee80211_bss_conf *bss_conf, 2483 u32 changes) 2484 { 2485 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2486 2487 /* Changes will be applied when the AP/IBSS is started */ 2488 if (!mvmvif->ap_ibss_active) 2489 return; 2490 2491 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2492 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2493 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2494 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2495 2496 /* Need to send a new beacon template to the FW */ 2497 if (changes & BSS_CHANGED_BEACON && 2498 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2499 IWL_WARN(mvm, "Failed updating beacon data\n"); 2500 2501 if (changes & BSS_CHANGED_TXPOWER) { 2502 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2503 bss_conf->txpower); 2504 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2505 } 2506 } 2507 2508 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2509 struct ieee80211_vif *vif, 2510 struct ieee80211_bss_conf *bss_conf, 2511 u32 changes) 2512 { 2513 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2514 2515 /* 2516 * iwl_mvm_bss_info_changed_station() might call 2517 * iwl_mvm_protect_session(), which reads directly from 2518 * the device (the system time), so make sure it is available. 2519 */ 2520 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2521 return; 2522 2523 mutex_lock(&mvm->mutex); 2524 2525 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2526 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2527 2528 switch (vif->type) { 2529 case NL80211_IFTYPE_STATION: 2530 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2531 break; 2532 case NL80211_IFTYPE_AP: 2533 case NL80211_IFTYPE_ADHOC: 2534 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2535 break; 2536 case NL80211_IFTYPE_MONITOR: 2537 if (changes & BSS_CHANGED_MU_GROUPS) 2538 iwl_mvm_update_mu_groups(mvm, vif); 2539 break; 2540 default: 2541 /* shouldn't happen */ 2542 WARN_ON_ONCE(1); 2543 } 2544 2545 mutex_unlock(&mvm->mutex); 2546 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2547 } 2548 2549 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2550 struct ieee80211_vif *vif, 2551 struct ieee80211_scan_request *hw_req) 2552 { 2553 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2554 int ret; 2555 2556 if (hw_req->req.n_channels == 0 || 2557 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2558 return -EINVAL; 2559 2560 mutex_lock(&mvm->mutex); 2561 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2562 mutex_unlock(&mvm->mutex); 2563 2564 return ret; 2565 } 2566 2567 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2568 struct ieee80211_vif *vif) 2569 { 2570 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2571 2572 mutex_lock(&mvm->mutex); 2573 2574 /* Due to a race condition, it's possible that mac80211 asks 2575 * us to stop a hw_scan when it's already stopped. This can 2576 * happen, for instance, if we stopped the scan ourselves, 2577 * called ieee80211_scan_completed() and the userspace called 2578 * cancel scan scan before ieee80211_scan_work() could run. 2579 * To handle that, simply return if the scan is not running. 2580 */ 2581 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2582 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2583 2584 mutex_unlock(&mvm->mutex); 2585 } 2586 2587 static void 2588 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2589 struct ieee80211_sta *sta, u16 tids, 2590 int num_frames, 2591 enum ieee80211_frame_release_type reason, 2592 bool more_data) 2593 { 2594 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2595 2596 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2597 2598 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2599 tids, more_data, false); 2600 } 2601 2602 static void 2603 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2604 struct ieee80211_sta *sta, u16 tids, 2605 int num_frames, 2606 enum ieee80211_frame_release_type reason, 2607 bool more_data) 2608 { 2609 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2610 2611 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2612 2613 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2614 tids, more_data, true); 2615 } 2616 2617 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2618 enum sta_notify_cmd cmd, 2619 struct ieee80211_sta *sta) 2620 { 2621 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2622 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2623 unsigned long txqs = 0, tids = 0; 2624 int tid; 2625 2626 /* 2627 * If we have TVQM then we get too high queue numbers - luckily 2628 * we really shouldn't get here with that because such hardware 2629 * should have firmware supporting buffer station offload. 2630 */ 2631 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2632 return; 2633 2634 spin_lock_bh(&mvmsta->lock); 2635 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2636 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2637 2638 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2639 continue; 2640 2641 __set_bit(tid_data->txq_id, &txqs); 2642 2643 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2644 continue; 2645 2646 __set_bit(tid, &tids); 2647 } 2648 2649 switch (cmd) { 2650 case STA_NOTIFY_SLEEP: 2651 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2652 ieee80211_sta_set_buffered(sta, tid, true); 2653 2654 if (txqs) 2655 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2656 /* 2657 * The fw updates the STA to be asleep. Tx packets on the Tx 2658 * queues to this station will not be transmitted. The fw will 2659 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2660 */ 2661 break; 2662 case STA_NOTIFY_AWAKE: 2663 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2664 break; 2665 2666 if (txqs) 2667 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2668 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2669 break; 2670 default: 2671 break; 2672 } 2673 spin_unlock_bh(&mvmsta->lock); 2674 } 2675 2676 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2677 struct ieee80211_vif *vif, 2678 enum sta_notify_cmd cmd, 2679 struct ieee80211_sta *sta) 2680 { 2681 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2682 } 2683 2684 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2685 { 2686 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2687 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2688 struct ieee80211_sta *sta; 2689 struct iwl_mvm_sta *mvmsta; 2690 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2691 2692 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2693 return; 2694 2695 rcu_read_lock(); 2696 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2697 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2698 rcu_read_unlock(); 2699 return; 2700 } 2701 2702 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2703 2704 if (!mvmsta->vif || 2705 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2706 rcu_read_unlock(); 2707 return; 2708 } 2709 2710 if (mvmsta->sleeping != sleeping) { 2711 mvmsta->sleeping = sleeping; 2712 __iwl_mvm_mac_sta_notify(mvm->hw, 2713 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2714 sta); 2715 ieee80211_sta_ps_transition(sta, sleeping); 2716 } 2717 2718 if (sleeping) { 2719 switch (notif->type) { 2720 case IWL_MVM_PM_EVENT_AWAKE: 2721 case IWL_MVM_PM_EVENT_ASLEEP: 2722 break; 2723 case IWL_MVM_PM_EVENT_UAPSD: 2724 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2725 break; 2726 case IWL_MVM_PM_EVENT_PS_POLL: 2727 ieee80211_sta_pspoll(sta); 2728 break; 2729 default: 2730 break; 2731 } 2732 } 2733 2734 rcu_read_unlock(); 2735 } 2736 2737 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2738 struct ieee80211_vif *vif, 2739 struct ieee80211_sta *sta) 2740 { 2741 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2742 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2743 2744 /* 2745 * This is called before mac80211 does RCU synchronisation, 2746 * so here we already invalidate our internal RCU-protected 2747 * station pointer. The rest of the code will thus no longer 2748 * be able to find the station this way, and we don't rely 2749 * on further RCU synchronisation after the sta_state() 2750 * callback deleted the station. 2751 */ 2752 mutex_lock(&mvm->mutex); 2753 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2754 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2755 ERR_PTR(-ENOENT)); 2756 2757 mutex_unlock(&mvm->mutex); 2758 } 2759 2760 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2761 const u8 *bssid) 2762 { 2763 int i; 2764 2765 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2766 struct iwl_mvm_tcm_mac *mdata; 2767 2768 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2769 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2770 mdata->opened_rx_ba_sessions = false; 2771 } 2772 2773 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2774 return; 2775 2776 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2777 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2778 return; 2779 } 2780 2781 if (!vif->p2p && 2782 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2783 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2784 return; 2785 } 2786 2787 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2788 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2789 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2790 return; 2791 } 2792 } 2793 2794 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2795 } 2796 2797 static void 2798 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2799 struct ieee80211_vif *vif, u8 *peer_addr, 2800 enum nl80211_tdls_operation action) 2801 { 2802 struct iwl_fw_dbg_trigger_tlv *trig; 2803 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2804 2805 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) 2806 return; 2807 2808 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); 2809 tdls_trig = (void *)trig->data; 2810 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 2811 ieee80211_vif_to_wdev(vif), trig)) 2812 return; 2813 2814 if (!(tdls_trig->action_bitmap & BIT(action))) 2815 return; 2816 2817 if (tdls_trig->peer_mode && 2818 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2819 return; 2820 2821 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2822 "TDLS event occurred, peer %pM, action %d", 2823 peer_addr, action); 2824 } 2825 2826 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2827 struct iwl_mvm_sta *mvm_sta) 2828 { 2829 struct iwl_mvm_tid_data *tid_data; 2830 struct sk_buff *skb; 2831 int i; 2832 2833 spin_lock_bh(&mvm_sta->lock); 2834 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2835 tid_data = &mvm_sta->tid_data[i]; 2836 2837 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) { 2838 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 2839 2840 /* 2841 * The first deferred frame should've stopped the MAC 2842 * queues, so we should never get a second deferred 2843 * frame for the RA/TID. 2844 */ 2845 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue)); 2846 ieee80211_free_txskb(mvm->hw, skb); 2847 } 2848 } 2849 spin_unlock_bh(&mvm_sta->lock); 2850 } 2851 2852 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2853 struct ieee80211_vif *vif, 2854 struct ieee80211_sta *sta, 2855 enum ieee80211_sta_state old_state, 2856 enum ieee80211_sta_state new_state) 2857 { 2858 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2859 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2860 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2861 int ret; 2862 2863 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2864 sta->addr, old_state, new_state); 2865 2866 /* this would be a mac80211 bug ... but don't crash */ 2867 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2868 return -EINVAL; 2869 2870 /* 2871 * If we are in a STA removal flow and in DQA mode: 2872 * 2873 * This is after the sync_rcu part, so the queues have already been 2874 * flushed. No more TXs on their way in mac80211's path, and no more in 2875 * the queues. 2876 * Also, we won't be getting any new TX frames for this station. 2877 * What we might have are deferred TX frames that need to be taken care 2878 * of. 2879 * 2880 * Drop any still-queued deferred-frame before removing the STA, and 2881 * make sure the worker is no longer handling frames for this STA. 2882 */ 2883 if (old_state == IEEE80211_STA_NONE && 2884 new_state == IEEE80211_STA_NOTEXIST) { 2885 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2886 flush_work(&mvm->add_stream_wk); 2887 2888 /* 2889 * No need to make sure deferred TX indication is off since the 2890 * worker will already remove it if it was on 2891 */ 2892 } 2893 2894 mutex_lock(&mvm->mutex); 2895 /* track whether or not the station is associated */ 2896 mvm_sta->sta_state = new_state; 2897 2898 if (old_state == IEEE80211_STA_NOTEXIST && 2899 new_state == IEEE80211_STA_NONE) { 2900 /* 2901 * Firmware bug - it'll crash if the beacon interval is less 2902 * than 16. We can't avoid connecting at all, so refuse the 2903 * station state change, this will cause mac80211 to abandon 2904 * attempts to connect to this AP, and eventually wpa_s will 2905 * blacklist the AP... 2906 */ 2907 if (vif->type == NL80211_IFTYPE_STATION && 2908 vif->bss_conf.beacon_int < 16) { 2909 IWL_ERR(mvm, 2910 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2911 sta->addr, vif->bss_conf.beacon_int); 2912 ret = -EINVAL; 2913 goto out_unlock; 2914 } 2915 2916 if (sta->tdls && 2917 (vif->p2p || 2918 iwl_mvm_tdls_sta_count(mvm, NULL) == 2919 IWL_MVM_TDLS_STA_COUNT || 2920 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2921 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2922 ret = -EBUSY; 2923 goto out_unlock; 2924 } 2925 2926 ret = iwl_mvm_add_sta(mvm, vif, sta); 2927 if (sta->tdls && ret == 0) { 2928 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2929 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2930 NL80211_TDLS_SETUP); 2931 } 2932 } else if (old_state == IEEE80211_STA_NONE && 2933 new_state == IEEE80211_STA_AUTH) { 2934 /* 2935 * EBS may be disabled due to previous failures reported by FW. 2936 * Reset EBS status here assuming environment has been changed. 2937 */ 2938 mvm->last_ebs_successful = true; 2939 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2940 ret = 0; 2941 } else if (old_state == IEEE80211_STA_AUTH && 2942 new_state == IEEE80211_STA_ASSOC) { 2943 if (vif->type == NL80211_IFTYPE_AP) { 2944 mvmvif->ap_assoc_sta_count++; 2945 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2946 } 2947 2948 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2949 false); 2950 ret = iwl_mvm_update_sta(mvm, vif, sta); 2951 } else if (old_state == IEEE80211_STA_ASSOC && 2952 new_state == IEEE80211_STA_AUTHORIZED) { 2953 2954 /* we don't support TDLS during DCM */ 2955 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2956 iwl_mvm_teardown_tdls_peers(mvm); 2957 2958 if (sta->tdls) 2959 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2960 NL80211_TDLS_ENABLE_LINK); 2961 2962 /* enable beacon filtering */ 2963 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2964 2965 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2966 true); 2967 2968 /* if wep is used, need to set the key for the station now */ 2969 if (vif->type == NL80211_IFTYPE_AP && mvmvif->ap_wep_key) 2970 ret = iwl_mvm_set_sta_key(mvm, vif, sta, 2971 mvmvif->ap_wep_key, 2972 STA_KEY_IDX_INVALID); 2973 else 2974 ret = 0; 2975 } else if (old_state == IEEE80211_STA_AUTHORIZED && 2976 new_state == IEEE80211_STA_ASSOC) { 2977 /* disable beacon filtering */ 2978 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 2979 ret = 0; 2980 } else if (old_state == IEEE80211_STA_ASSOC && 2981 new_state == IEEE80211_STA_AUTH) { 2982 if (vif->type == NL80211_IFTYPE_AP) { 2983 mvmvif->ap_assoc_sta_count--; 2984 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2985 } 2986 ret = 0; 2987 } else if (old_state == IEEE80211_STA_AUTH && 2988 new_state == IEEE80211_STA_NONE) { 2989 ret = 0; 2990 } else if (old_state == IEEE80211_STA_NONE && 2991 new_state == IEEE80211_STA_NOTEXIST) { 2992 ret = iwl_mvm_rm_sta(mvm, vif, sta); 2993 if (sta->tdls) { 2994 iwl_mvm_recalc_tdls_state(mvm, vif, false); 2995 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2996 NL80211_TDLS_DISABLE_LINK); 2997 } 2998 } else { 2999 ret = -EIO; 3000 } 3001 out_unlock: 3002 mutex_unlock(&mvm->mutex); 3003 3004 if (sta->tdls && ret == 0) { 3005 if (old_state == IEEE80211_STA_NOTEXIST && 3006 new_state == IEEE80211_STA_NONE) 3007 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3008 else if (old_state == IEEE80211_STA_NONE && 3009 new_state == IEEE80211_STA_NOTEXIST) 3010 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3011 } 3012 3013 return ret; 3014 } 3015 3016 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3017 { 3018 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3019 3020 mvm->rts_threshold = value; 3021 3022 return 0; 3023 } 3024 3025 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3026 struct ieee80211_vif *vif, 3027 struct ieee80211_sta *sta, u32 changed) 3028 { 3029 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3030 3031 if (vif->type == NL80211_IFTYPE_STATION && 3032 changed & IEEE80211_RC_NSS_CHANGED) 3033 iwl_mvm_sf_update(mvm, vif, false); 3034 } 3035 3036 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3037 struct ieee80211_vif *vif, u16 ac, 3038 const struct ieee80211_tx_queue_params *params) 3039 { 3040 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3041 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3042 3043 mvmvif->queue_params[ac] = *params; 3044 3045 /* 3046 * No need to update right away, we'll get BSS_CHANGED_QOS 3047 * The exception is P2P_DEVICE interface which needs immediate update. 3048 */ 3049 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3050 int ret; 3051 3052 mutex_lock(&mvm->mutex); 3053 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3054 mutex_unlock(&mvm->mutex); 3055 return ret; 3056 } 3057 return 0; 3058 } 3059 3060 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3061 struct ieee80211_vif *vif, 3062 u16 req_duration) 3063 { 3064 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3065 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3066 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3067 3068 /* 3069 * iwl_mvm_protect_session() reads directly from the device 3070 * (the system time), so make sure it is available. 3071 */ 3072 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 3073 return; 3074 3075 if (req_duration > duration) 3076 duration = req_duration; 3077 3078 mutex_lock(&mvm->mutex); 3079 /* Try really hard to protect the session and hear a beacon */ 3080 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 3081 mutex_unlock(&mvm->mutex); 3082 3083 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 3084 } 3085 3086 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3087 struct ieee80211_vif *vif, 3088 struct cfg80211_sched_scan_request *req, 3089 struct ieee80211_scan_ies *ies) 3090 { 3091 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3092 3093 int ret; 3094 3095 mutex_lock(&mvm->mutex); 3096 3097 if (!vif->bss_conf.idle) { 3098 ret = -EBUSY; 3099 goto out; 3100 } 3101 3102 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3103 3104 out: 3105 mutex_unlock(&mvm->mutex); 3106 return ret; 3107 } 3108 3109 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3110 struct ieee80211_vif *vif) 3111 { 3112 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3113 int ret; 3114 3115 mutex_lock(&mvm->mutex); 3116 3117 /* Due to a race condition, it's possible that mac80211 asks 3118 * us to stop a sched_scan when it's already stopped. This 3119 * can happen, for instance, if we stopped the scan ourselves, 3120 * called ieee80211_sched_scan_stopped() and the userspace called 3121 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3122 * could run. To handle this, simply return if the scan is 3123 * not running. 3124 */ 3125 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3126 mutex_unlock(&mvm->mutex); 3127 return 0; 3128 } 3129 3130 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3131 mutex_unlock(&mvm->mutex); 3132 iwl_mvm_wait_for_async_handlers(mvm); 3133 3134 return ret; 3135 } 3136 3137 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3138 enum set_key_cmd cmd, 3139 struct ieee80211_vif *vif, 3140 struct ieee80211_sta *sta, 3141 struct ieee80211_key_conf *key) 3142 { 3143 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3144 struct iwl_mvm_sta *mvmsta; 3145 struct iwl_mvm_key_pn *ptk_pn; 3146 int keyidx = key->keyidx; 3147 int ret; 3148 u8 key_offset; 3149 3150 if (iwlwifi_mod_params.swcrypto) { 3151 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 3152 return -EOPNOTSUPP; 3153 } 3154 3155 switch (key->cipher) { 3156 case WLAN_CIPHER_SUITE_TKIP: 3157 if (!mvm->trans->cfg->gen2) { 3158 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3159 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3160 } else if (vif->type == NL80211_IFTYPE_STATION) { 3161 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3162 } else { 3163 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3164 return -EOPNOTSUPP; 3165 } 3166 break; 3167 case WLAN_CIPHER_SUITE_CCMP: 3168 case WLAN_CIPHER_SUITE_GCMP: 3169 case WLAN_CIPHER_SUITE_GCMP_256: 3170 if (!iwl_mvm_has_new_tx_api(mvm)) 3171 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3172 break; 3173 case WLAN_CIPHER_SUITE_AES_CMAC: 3174 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3175 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3176 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3177 break; 3178 case WLAN_CIPHER_SUITE_WEP40: 3179 case WLAN_CIPHER_SUITE_WEP104: 3180 if (vif->type == NL80211_IFTYPE_AP) { 3181 struct iwl_mvm_vif *mvmvif = 3182 iwl_mvm_vif_from_mac80211(vif); 3183 3184 mvmvif->ap_wep_key = kmemdup(key, 3185 sizeof(*key) + key->keylen, 3186 GFP_KERNEL); 3187 if (!mvmvif->ap_wep_key) 3188 return -ENOMEM; 3189 } 3190 3191 if (vif->type != NL80211_IFTYPE_STATION) 3192 return 0; 3193 break; 3194 default: 3195 /* currently FW supports only one optional cipher scheme */ 3196 if (hw->n_cipher_schemes && 3197 hw->cipher_schemes->cipher == key->cipher) 3198 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3199 else 3200 return -EOPNOTSUPP; 3201 } 3202 3203 mutex_lock(&mvm->mutex); 3204 3205 switch (cmd) { 3206 case SET_KEY: 3207 if ((vif->type == NL80211_IFTYPE_ADHOC || 3208 vif->type == NL80211_IFTYPE_AP) && !sta) { 3209 /* 3210 * GTK on AP interface is a TX-only key, return 0; 3211 * on IBSS they're per-station and because we're lazy 3212 * we don't support them for RX, so do the same. 3213 * CMAC/GMAC in AP/IBSS modes must be done in software. 3214 */ 3215 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3216 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3217 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3218 ret = -EOPNOTSUPP; 3219 else 3220 ret = 0; 3221 3222 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3223 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3224 !iwl_mvm_has_new_tx_api(mvm)) { 3225 key->hw_key_idx = STA_KEY_IDX_INVALID; 3226 break; 3227 } 3228 } 3229 3230 /* During FW restart, in order to restore the state as it was, 3231 * don't try to reprogram keys we previously failed for. 3232 */ 3233 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3234 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3235 IWL_DEBUG_MAC80211(mvm, 3236 "skip invalid idx key programming during restart\n"); 3237 ret = 0; 3238 break; 3239 } 3240 3241 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3242 sta && iwl_mvm_has_new_rx_api(mvm) && 3243 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3244 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3245 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3246 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3247 struct ieee80211_key_seq seq; 3248 int tid, q; 3249 3250 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3251 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3252 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3253 mvm->trans->num_rx_queues), 3254 GFP_KERNEL); 3255 if (!ptk_pn) { 3256 ret = -ENOMEM; 3257 break; 3258 } 3259 3260 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3261 ieee80211_get_key_rx_seq(key, tid, &seq); 3262 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3263 memcpy(ptk_pn->q[q].pn[tid], 3264 seq.ccmp.pn, 3265 IEEE80211_CCMP_PN_LEN); 3266 } 3267 3268 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3269 } 3270 3271 /* in HW restart reuse the index, otherwise request a new one */ 3272 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3273 key_offset = key->hw_key_idx; 3274 else 3275 key_offset = STA_KEY_IDX_INVALID; 3276 3277 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3278 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3279 if (ret) { 3280 IWL_WARN(mvm, "set key failed\n"); 3281 /* 3282 * can't add key for RX, but we don't need it 3283 * in the device for TX so still return 0 3284 */ 3285 key->hw_key_idx = STA_KEY_IDX_INVALID; 3286 ret = 0; 3287 } 3288 3289 break; 3290 case DISABLE_KEY: 3291 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3292 ret = 0; 3293 break; 3294 } 3295 3296 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3297 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3298 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3299 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3300 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3301 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3302 ptk_pn = rcu_dereference_protected( 3303 mvmsta->ptk_pn[keyidx], 3304 lockdep_is_held(&mvm->mutex)); 3305 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3306 if (ptk_pn) 3307 kfree_rcu(ptk_pn, rcu_head); 3308 } 3309 3310 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3311 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3312 break; 3313 default: 3314 ret = -EINVAL; 3315 } 3316 3317 mutex_unlock(&mvm->mutex); 3318 return ret; 3319 } 3320 3321 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3322 struct ieee80211_vif *vif, 3323 struct ieee80211_key_conf *keyconf, 3324 struct ieee80211_sta *sta, 3325 u32 iv32, u16 *phase1key) 3326 { 3327 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3328 3329 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3330 return; 3331 3332 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3333 } 3334 3335 3336 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3337 struct iwl_rx_packet *pkt, void *data) 3338 { 3339 struct iwl_mvm *mvm = 3340 container_of(notif_wait, struct iwl_mvm, notif_wait); 3341 struct iwl_hs20_roc_res *resp; 3342 int resp_len = iwl_rx_packet_payload_len(pkt); 3343 struct iwl_mvm_time_event_data *te_data = data; 3344 3345 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3346 return true; 3347 3348 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3349 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3350 return true; 3351 } 3352 3353 resp = (void *)pkt->data; 3354 3355 IWL_DEBUG_TE(mvm, 3356 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 3357 resp->status, resp->event_unique_id); 3358 3359 te_data->uid = le32_to_cpu(resp->event_unique_id); 3360 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3361 te_data->uid); 3362 3363 spin_lock_bh(&mvm->time_event_lock); 3364 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3365 spin_unlock_bh(&mvm->time_event_lock); 3366 3367 return true; 3368 } 3369 3370 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3371 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3372 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3373 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3374 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3375 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3376 struct ieee80211_channel *channel, 3377 struct ieee80211_vif *vif, 3378 int duration) 3379 { 3380 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3381 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3382 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3383 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3384 struct iwl_notification_wait wait_time_event; 3385 u32 dtim_interval = vif->bss_conf.dtim_period * 3386 vif->bss_conf.beacon_int; 3387 u32 req_dur, delay; 3388 struct iwl_hs20_roc_req aux_roc_req = { 3389 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3390 .id_and_color = 3391 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3392 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3393 /* Set the channel info data */ 3394 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3395 PHY_BAND_24 : PHY_BAND_5, 3396 .channel_info.channel = channel->hw_value, 3397 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3398 /* Set the time and duration */ 3399 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3400 }; 3401 3402 delay = AUX_ROC_MIN_DELAY; 3403 req_dur = MSEC_TO_TU(duration); 3404 3405 /* 3406 * If we are associated we want the delay time to be at least one 3407 * dtim interval so that the FW can wait until after the DTIM and 3408 * then start the time event, this will potentially allow us to 3409 * remain off-channel for the max duration. 3410 * Since we want to use almost a whole dtim interval we would also 3411 * like the delay to be for 2-3 dtim intervals, in case there are 3412 * other time events with higher priority. 3413 */ 3414 if (vif->bss_conf.assoc) { 3415 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3416 /* We cannot remain off-channel longer than the DTIM interval */ 3417 if (dtim_interval <= req_dur) { 3418 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3419 if (req_dur <= AUX_ROC_MIN_DURATION) 3420 req_dur = dtim_interval - 3421 AUX_ROC_MIN_SAFETY_BUFFER; 3422 } 3423 } 3424 3425 aux_roc_req.duration = cpu_to_le32(req_dur); 3426 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3427 3428 IWL_DEBUG_TE(mvm, 3429 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3430 channel->hw_value, req_dur, duration, delay, 3431 dtim_interval); 3432 /* Set the node address */ 3433 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3434 3435 lockdep_assert_held(&mvm->mutex); 3436 3437 spin_lock_bh(&mvm->time_event_lock); 3438 3439 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3440 spin_unlock_bh(&mvm->time_event_lock); 3441 return -EIO; 3442 } 3443 3444 te_data->vif = vif; 3445 te_data->duration = duration; 3446 te_data->id = HOT_SPOT_CMD; 3447 3448 spin_unlock_bh(&mvm->time_event_lock); 3449 3450 /* 3451 * Use a notification wait, which really just processes the 3452 * command response and doesn't wait for anything, in order 3453 * to be able to process the response and get the UID inside 3454 * the RX path. Using CMD_WANT_SKB doesn't work because it 3455 * stores the buffer and then wakes up this thread, by which 3456 * time another notification (that the time event started) 3457 * might already be processed unsuccessfully. 3458 */ 3459 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3460 time_event_response, 3461 ARRAY_SIZE(time_event_response), 3462 iwl_mvm_rx_aux_roc, te_data); 3463 3464 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3465 &aux_roc_req); 3466 3467 if (res) { 3468 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3469 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3470 goto out_clear_te; 3471 } 3472 3473 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3474 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3475 /* should never fail */ 3476 WARN_ON_ONCE(res); 3477 3478 if (res) { 3479 out_clear_te: 3480 spin_lock_bh(&mvm->time_event_lock); 3481 iwl_mvm_te_clear_data(mvm, te_data); 3482 spin_unlock_bh(&mvm->time_event_lock); 3483 } 3484 3485 return res; 3486 } 3487 3488 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3489 struct ieee80211_vif *vif, 3490 struct ieee80211_channel *channel, 3491 int duration, 3492 enum ieee80211_roc_type type) 3493 { 3494 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3495 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3496 struct cfg80211_chan_def chandef; 3497 struct iwl_mvm_phy_ctxt *phy_ctxt; 3498 int ret, i; 3499 3500 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3501 duration, type); 3502 3503 /* 3504 * Flush the done work, just in case it's still pending, so that 3505 * the work it does can complete and we can accept new frames. 3506 */ 3507 flush_work(&mvm->roc_done_wk); 3508 3509 mutex_lock(&mvm->mutex); 3510 3511 switch (vif->type) { 3512 case NL80211_IFTYPE_STATION: 3513 if (fw_has_capa(&mvm->fw->ucode_capa, 3514 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3515 /* Use aux roc framework (HS20) */ 3516 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3517 vif, duration); 3518 goto out_unlock; 3519 } 3520 IWL_ERR(mvm, "hotspot not supported\n"); 3521 ret = -EINVAL; 3522 goto out_unlock; 3523 case NL80211_IFTYPE_P2P_DEVICE: 3524 /* handle below */ 3525 break; 3526 default: 3527 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3528 ret = -EINVAL; 3529 goto out_unlock; 3530 } 3531 3532 for (i = 0; i < NUM_PHY_CTX; i++) { 3533 phy_ctxt = &mvm->phy_ctxts[i]; 3534 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3535 continue; 3536 3537 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3538 /* 3539 * Unbind the P2P_DEVICE from the current PHY context, 3540 * and if the PHY context is not used remove it. 3541 */ 3542 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3543 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3544 goto out_unlock; 3545 3546 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3547 3548 /* Bind the P2P_DEVICE to the current PHY Context */ 3549 mvmvif->phy_ctxt = phy_ctxt; 3550 3551 ret = iwl_mvm_binding_add_vif(mvm, vif); 3552 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3553 goto out_unlock; 3554 3555 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3556 goto schedule_time_event; 3557 } 3558 } 3559 3560 /* Need to update the PHY context only if the ROC channel changed */ 3561 if (channel == mvmvif->phy_ctxt->channel) 3562 goto schedule_time_event; 3563 3564 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3565 3566 /* 3567 * Change the PHY context configuration as it is currently referenced 3568 * only by the P2P Device MAC 3569 */ 3570 if (mvmvif->phy_ctxt->ref == 1) { 3571 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3572 &chandef, 1, 1); 3573 if (ret) 3574 goto out_unlock; 3575 } else { 3576 /* 3577 * The PHY context is shared with other MACs. Need to remove the 3578 * P2P Device from the binding, allocate an new PHY context and 3579 * create a new binding 3580 */ 3581 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3582 if (!phy_ctxt) { 3583 ret = -ENOSPC; 3584 goto out_unlock; 3585 } 3586 3587 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3588 1, 1); 3589 if (ret) { 3590 IWL_ERR(mvm, "Failed to change PHY context\n"); 3591 goto out_unlock; 3592 } 3593 3594 /* Unbind the P2P_DEVICE from the current PHY context */ 3595 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3596 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3597 goto out_unlock; 3598 3599 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3600 3601 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3602 mvmvif->phy_ctxt = phy_ctxt; 3603 3604 ret = iwl_mvm_binding_add_vif(mvm, vif); 3605 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3606 goto out_unlock; 3607 3608 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3609 } 3610 3611 schedule_time_event: 3612 /* Schedule the time events */ 3613 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3614 3615 out_unlock: 3616 mutex_unlock(&mvm->mutex); 3617 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3618 return ret; 3619 } 3620 3621 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3622 { 3623 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3624 3625 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3626 3627 mutex_lock(&mvm->mutex); 3628 iwl_mvm_stop_roc(mvm); 3629 mutex_unlock(&mvm->mutex); 3630 3631 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3632 return 0; 3633 } 3634 3635 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3636 struct ieee80211_chanctx_conf *ctx) 3637 { 3638 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3639 struct iwl_mvm_phy_ctxt *phy_ctxt; 3640 int ret; 3641 3642 lockdep_assert_held(&mvm->mutex); 3643 3644 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3645 3646 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3647 if (!phy_ctxt) { 3648 ret = -ENOSPC; 3649 goto out; 3650 } 3651 3652 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3653 ctx->rx_chains_static, 3654 ctx->rx_chains_dynamic); 3655 if (ret) { 3656 IWL_ERR(mvm, "Failed to add PHY context\n"); 3657 goto out; 3658 } 3659 3660 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3661 *phy_ctxt_id = phy_ctxt->id; 3662 out: 3663 return ret; 3664 } 3665 3666 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3667 struct ieee80211_chanctx_conf *ctx) 3668 { 3669 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3670 int ret; 3671 3672 mutex_lock(&mvm->mutex); 3673 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3674 mutex_unlock(&mvm->mutex); 3675 3676 return ret; 3677 } 3678 3679 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3680 struct ieee80211_chanctx_conf *ctx) 3681 { 3682 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3683 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3684 3685 lockdep_assert_held(&mvm->mutex); 3686 3687 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3688 } 3689 3690 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3691 struct ieee80211_chanctx_conf *ctx) 3692 { 3693 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3694 3695 mutex_lock(&mvm->mutex); 3696 __iwl_mvm_remove_chanctx(mvm, ctx); 3697 mutex_unlock(&mvm->mutex); 3698 } 3699 3700 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3701 struct ieee80211_chanctx_conf *ctx, 3702 u32 changed) 3703 { 3704 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3705 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3706 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3707 3708 if (WARN_ONCE((phy_ctxt->ref > 1) && 3709 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3710 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3711 IEEE80211_CHANCTX_CHANGE_RADAR | 3712 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3713 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3714 phy_ctxt->ref, changed)) 3715 return; 3716 3717 mutex_lock(&mvm->mutex); 3718 3719 /* we are only changing the min_width, may be a noop */ 3720 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 3721 if (phy_ctxt->width == ctx->min_def.width) 3722 goto out_unlock; 3723 3724 /* we are just toggling between 20_NOHT and 20 */ 3725 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 3726 ctx->min_def.width <= NL80211_CHAN_WIDTH_20) 3727 goto out_unlock; 3728 } 3729 3730 iwl_mvm_bt_coex_vif_change(mvm); 3731 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3732 ctx->rx_chains_static, 3733 ctx->rx_chains_dynamic); 3734 3735 out_unlock: 3736 mutex_unlock(&mvm->mutex); 3737 } 3738 3739 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3740 struct ieee80211_vif *vif, 3741 struct ieee80211_chanctx_conf *ctx, 3742 bool switching_chanctx) 3743 { 3744 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3745 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3746 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3747 int ret; 3748 3749 lockdep_assert_held(&mvm->mutex); 3750 3751 mvmvif->phy_ctxt = phy_ctxt; 3752 3753 switch (vif->type) { 3754 case NL80211_IFTYPE_AP: 3755 /* only needed if we're switching chanctx (i.e. during CSA) */ 3756 if (switching_chanctx) { 3757 mvmvif->ap_ibss_active = true; 3758 break; 3759 } 3760 case NL80211_IFTYPE_ADHOC: 3761 /* 3762 * The AP binding flow is handled as part of the start_ap flow 3763 * (in bss_info_changed), similarly for IBSS. 3764 */ 3765 ret = 0; 3766 goto out; 3767 case NL80211_IFTYPE_STATION: 3768 mvmvif->csa_bcn_pending = false; 3769 break; 3770 case NL80211_IFTYPE_MONITOR: 3771 /* always disable PS when a monitor interface is active */ 3772 mvmvif->ps_disabled = true; 3773 break; 3774 default: 3775 ret = -EINVAL; 3776 goto out; 3777 } 3778 3779 ret = iwl_mvm_binding_add_vif(mvm, vif); 3780 if (ret) 3781 goto out; 3782 3783 /* 3784 * Power state must be updated before quotas, 3785 * otherwise fw will complain. 3786 */ 3787 iwl_mvm_power_update_mac(mvm); 3788 3789 /* Setting the quota at this stage is only required for monitor 3790 * interfaces. For the other types, the bss_info changed flow 3791 * will handle quota settings. 3792 */ 3793 if (vif->type == NL80211_IFTYPE_MONITOR) { 3794 mvmvif->monitor_active = true; 3795 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3796 if (ret) 3797 goto out_remove_binding; 3798 3799 ret = iwl_mvm_add_snif_sta(mvm, vif); 3800 if (ret) 3801 goto out_remove_binding; 3802 3803 } 3804 3805 /* Handle binding during CSA */ 3806 if (vif->type == NL80211_IFTYPE_AP) { 3807 iwl_mvm_update_quotas(mvm, false, NULL); 3808 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3809 } 3810 3811 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3812 u32 duration = 3 * vif->bss_conf.beacon_int; 3813 3814 /* iwl_mvm_protect_session() reads directly from the 3815 * device (the system time), so make sure it is 3816 * available. 3817 */ 3818 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3819 if (ret) 3820 goto out_remove_binding; 3821 3822 /* Protect the session to make sure we hear the first 3823 * beacon on the new channel. 3824 */ 3825 mvmvif->csa_bcn_pending = true; 3826 iwl_mvm_protect_session(mvm, vif, duration, duration, 3827 vif->bss_conf.beacon_int / 2, 3828 true); 3829 3830 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3831 3832 iwl_mvm_update_quotas(mvm, false, NULL); 3833 } 3834 3835 goto out; 3836 3837 out_remove_binding: 3838 iwl_mvm_binding_remove_vif(mvm, vif); 3839 iwl_mvm_power_update_mac(mvm); 3840 out: 3841 if (ret) 3842 mvmvif->phy_ctxt = NULL; 3843 return ret; 3844 } 3845 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3846 struct ieee80211_vif *vif, 3847 struct ieee80211_chanctx_conf *ctx) 3848 { 3849 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3850 int ret; 3851 3852 mutex_lock(&mvm->mutex); 3853 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3854 mutex_unlock(&mvm->mutex); 3855 3856 return ret; 3857 } 3858 3859 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3860 struct ieee80211_vif *vif, 3861 struct ieee80211_chanctx_conf *ctx, 3862 bool switching_chanctx) 3863 { 3864 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3865 struct ieee80211_vif *disabled_vif = NULL; 3866 3867 lockdep_assert_held(&mvm->mutex); 3868 3869 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3870 3871 switch (vif->type) { 3872 case NL80211_IFTYPE_ADHOC: 3873 goto out; 3874 case NL80211_IFTYPE_MONITOR: 3875 mvmvif->monitor_active = false; 3876 mvmvif->ps_disabled = false; 3877 iwl_mvm_rm_snif_sta(mvm, vif); 3878 break; 3879 case NL80211_IFTYPE_AP: 3880 /* This part is triggered only during CSA */ 3881 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3882 goto out; 3883 3884 mvmvif->csa_countdown = false; 3885 3886 /* Set CS bit on all the stations */ 3887 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3888 3889 /* Save blocked iface, the timeout is set on the next beacon */ 3890 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3891 3892 mvmvif->ap_ibss_active = false; 3893 break; 3894 case NL80211_IFTYPE_STATION: 3895 if (!switching_chanctx) 3896 break; 3897 3898 disabled_vif = vif; 3899 3900 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3901 break; 3902 default: 3903 break; 3904 } 3905 3906 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3907 iwl_mvm_binding_remove_vif(mvm, vif); 3908 3909 out: 3910 mvmvif->phy_ctxt = NULL; 3911 iwl_mvm_power_update_mac(mvm); 3912 } 3913 3914 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3915 struct ieee80211_vif *vif, 3916 struct ieee80211_chanctx_conf *ctx) 3917 { 3918 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3919 3920 mutex_lock(&mvm->mutex); 3921 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3922 mutex_unlock(&mvm->mutex); 3923 } 3924 3925 static int 3926 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3927 struct ieee80211_vif_chanctx_switch *vifs) 3928 { 3929 int ret; 3930 3931 mutex_lock(&mvm->mutex); 3932 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3933 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3934 3935 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3936 if (ret) { 3937 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3938 goto out_reassign; 3939 } 3940 3941 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3942 true); 3943 if (ret) { 3944 IWL_ERR(mvm, 3945 "failed to assign new_ctx during channel switch\n"); 3946 goto out_remove; 3947 } 3948 3949 /* we don't support TDLS during DCM - can be caused by channel switch */ 3950 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3951 iwl_mvm_teardown_tdls_peers(mvm); 3952 3953 goto out; 3954 3955 out_remove: 3956 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3957 3958 out_reassign: 3959 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3960 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3961 goto out_restart; 3962 } 3963 3964 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3965 true)) { 3966 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3967 goto out_restart; 3968 } 3969 3970 goto out; 3971 3972 out_restart: 3973 /* things keep failing, better restart the hw */ 3974 iwl_mvm_nic_restart(mvm, false); 3975 3976 out: 3977 mutex_unlock(&mvm->mutex); 3978 3979 return ret; 3980 } 3981 3982 static int 3983 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 3984 struct ieee80211_vif_chanctx_switch *vifs) 3985 { 3986 int ret; 3987 3988 mutex_lock(&mvm->mutex); 3989 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3990 3991 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3992 true); 3993 if (ret) { 3994 IWL_ERR(mvm, 3995 "failed to assign new_ctx during channel switch\n"); 3996 goto out_reassign; 3997 } 3998 3999 goto out; 4000 4001 out_reassign: 4002 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4003 true)) { 4004 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4005 goto out_restart; 4006 } 4007 4008 goto out; 4009 4010 out_restart: 4011 /* things keep failing, better restart the hw */ 4012 iwl_mvm_nic_restart(mvm, false); 4013 4014 out: 4015 mutex_unlock(&mvm->mutex); 4016 4017 return ret; 4018 } 4019 4020 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4021 struct ieee80211_vif_chanctx_switch *vifs, 4022 int n_vifs, 4023 enum ieee80211_chanctx_switch_mode mode) 4024 { 4025 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4026 int ret; 4027 4028 /* we only support a single-vif right now */ 4029 if (n_vifs > 1) 4030 return -EOPNOTSUPP; 4031 4032 switch (mode) { 4033 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4034 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4035 break; 4036 case CHANCTX_SWMODE_REASSIGN_VIF: 4037 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4038 break; 4039 default: 4040 ret = -EOPNOTSUPP; 4041 break; 4042 } 4043 4044 return ret; 4045 } 4046 4047 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4048 { 4049 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4050 4051 return mvm->ibss_manager; 4052 } 4053 4054 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4055 struct ieee80211_sta *sta, 4056 bool set) 4057 { 4058 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4059 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4060 4061 if (!mvm_sta || !mvm_sta->vif) { 4062 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4063 return -EINVAL; 4064 } 4065 4066 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4067 } 4068 4069 #ifdef CONFIG_NL80211_TESTMODE 4070 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4071 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4072 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4073 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4074 }; 4075 4076 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4077 struct ieee80211_vif *vif, 4078 void *data, int len) 4079 { 4080 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4081 int err; 4082 u32 noa_duration; 4083 4084 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy, 4085 NULL); 4086 if (err) 4087 return err; 4088 4089 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4090 return -EINVAL; 4091 4092 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4093 case IWL_MVM_TM_CMD_SET_NOA: 4094 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4095 !vif->bss_conf.enable_beacon || 4096 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4097 return -EINVAL; 4098 4099 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4100 if (noa_duration >= vif->bss_conf.beacon_int) 4101 return -EINVAL; 4102 4103 mvm->noa_duration = noa_duration; 4104 mvm->noa_vif = vif; 4105 4106 return iwl_mvm_update_quotas(mvm, true, NULL); 4107 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4108 /* must be associated client vif - ignore authorized */ 4109 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4110 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4111 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4112 return -EINVAL; 4113 4114 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4115 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4116 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4117 } 4118 4119 return -EOPNOTSUPP; 4120 } 4121 4122 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4123 struct ieee80211_vif *vif, 4124 void *data, int len) 4125 { 4126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4127 int err; 4128 4129 mutex_lock(&mvm->mutex); 4130 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4131 mutex_unlock(&mvm->mutex); 4132 4133 return err; 4134 } 4135 #endif 4136 4137 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4138 struct ieee80211_vif *vif, 4139 struct ieee80211_channel_switch *chsw) 4140 { 4141 /* By implementing this operation, we prevent mac80211 from 4142 * starting its own channel switch timer, so that we can call 4143 * ieee80211_chswitch_done() ourselves at the right time 4144 * (which is when the absence time event starts). 4145 */ 4146 4147 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4148 "dummy channel switch op\n"); 4149 } 4150 4151 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4152 struct ieee80211_vif *vif, 4153 struct ieee80211_channel_switch *chsw) 4154 { 4155 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4156 struct ieee80211_vif *csa_vif; 4157 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4158 u32 apply_time; 4159 int ret; 4160 4161 mutex_lock(&mvm->mutex); 4162 4163 mvmvif->csa_failed = false; 4164 4165 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4166 chsw->chandef.center_freq1); 4167 4168 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4169 ieee80211_vif_to_wdev(vif), 4170 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4171 4172 switch (vif->type) { 4173 case NL80211_IFTYPE_AP: 4174 csa_vif = 4175 rcu_dereference_protected(mvm->csa_vif, 4176 lockdep_is_held(&mvm->mutex)); 4177 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4178 "Another CSA is already in progress")) { 4179 ret = -EBUSY; 4180 goto out_unlock; 4181 } 4182 4183 /* we still didn't unblock tx. prevent new CS meanwhile */ 4184 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4185 lockdep_is_held(&mvm->mutex))) { 4186 ret = -EBUSY; 4187 goto out_unlock; 4188 } 4189 4190 rcu_assign_pointer(mvm->csa_vif, vif); 4191 4192 if (WARN_ONCE(mvmvif->csa_countdown, 4193 "Previous CSA countdown didn't complete")) { 4194 ret = -EBUSY; 4195 goto out_unlock; 4196 } 4197 4198 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4199 4200 break; 4201 case NL80211_IFTYPE_STATION: 4202 /* Schedule the time event to a bit before beacon 1, 4203 * to make sure we're in the new channel when the 4204 * GO/AP arrives. In case count <= 1 immediately schedule the 4205 * TE (this might result with some packet loss or connection 4206 * loss). 4207 */ 4208 if (chsw->count <= 1) 4209 apply_time = 0; 4210 else 4211 apply_time = chsw->device_timestamp + 4212 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4213 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4214 4215 if (chsw->block_tx) 4216 iwl_mvm_csa_client_absent(mvm, vif); 4217 4218 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4219 apply_time); 4220 if (mvmvif->bf_data.bf_enabled) { 4221 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4222 if (ret) 4223 goto out_unlock; 4224 } 4225 4226 break; 4227 default: 4228 break; 4229 } 4230 4231 mvmvif->ps_disabled = true; 4232 4233 ret = iwl_mvm_power_update_ps(mvm); 4234 if (ret) 4235 goto out_unlock; 4236 4237 /* we won't be on this channel any longer */ 4238 iwl_mvm_teardown_tdls_peers(mvm); 4239 4240 out_unlock: 4241 mutex_unlock(&mvm->mutex); 4242 4243 return ret; 4244 } 4245 4246 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 4247 struct ieee80211_vif *vif) 4248 { 4249 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4250 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4251 int ret; 4252 4253 mutex_lock(&mvm->mutex); 4254 4255 if (mvmvif->csa_failed) { 4256 mvmvif->csa_failed = false; 4257 ret = -EIO; 4258 goto out_unlock; 4259 } 4260 4261 if (vif->type == NL80211_IFTYPE_STATION) { 4262 struct iwl_mvm_sta *mvmsta; 4263 4264 mvmvif->csa_bcn_pending = false; 4265 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 4266 mvmvif->ap_sta_id); 4267 4268 if (WARN_ON(!mvmsta)) { 4269 ret = -EIO; 4270 goto out_unlock; 4271 } 4272 4273 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 4274 4275 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4276 4277 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4278 if (ret) 4279 goto out_unlock; 4280 4281 iwl_mvm_stop_session_protection(mvm, vif); 4282 } 4283 4284 mvmvif->ps_disabled = false; 4285 4286 ret = iwl_mvm_power_update_ps(mvm); 4287 4288 out_unlock: 4289 mutex_unlock(&mvm->mutex); 4290 4291 return ret; 4292 } 4293 4294 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4295 { 4296 int i; 4297 4298 if (!iwl_mvm_has_new_tx_api(mvm)) { 4299 if (drop) { 4300 mutex_lock(&mvm->mutex); 4301 iwl_mvm_flush_tx_path(mvm, 4302 iwl_mvm_flushable_queues(mvm) & queues, 0); 4303 mutex_unlock(&mvm->mutex); 4304 } else { 4305 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4306 } 4307 return; 4308 } 4309 4310 mutex_lock(&mvm->mutex); 4311 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4312 struct ieee80211_sta *sta; 4313 4314 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4315 lockdep_is_held(&mvm->mutex)); 4316 if (IS_ERR_OR_NULL(sta)) 4317 continue; 4318 4319 if (drop) 4320 iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0); 4321 else 4322 iwl_mvm_wait_sta_queues_empty(mvm, 4323 iwl_mvm_sta_from_mac80211(sta)); 4324 } 4325 mutex_unlock(&mvm->mutex); 4326 } 4327 4328 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4329 struct ieee80211_vif *vif, u32 queues, bool drop) 4330 { 4331 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4332 struct iwl_mvm_vif *mvmvif; 4333 struct iwl_mvm_sta *mvmsta; 4334 struct ieee80211_sta *sta; 4335 int i; 4336 u32 msk = 0; 4337 4338 if (!vif) { 4339 iwl_mvm_flush_no_vif(mvm, queues, drop); 4340 return; 4341 } 4342 4343 if (vif->type != NL80211_IFTYPE_STATION) 4344 return; 4345 4346 /* Make sure we're done with the deferred traffic before flushing */ 4347 flush_work(&mvm->add_stream_wk); 4348 4349 mutex_lock(&mvm->mutex); 4350 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4351 4352 /* flush the AP-station and all TDLS peers */ 4353 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4354 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4355 lockdep_is_held(&mvm->mutex)); 4356 if (IS_ERR_OR_NULL(sta)) 4357 continue; 4358 4359 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4360 if (mvmsta->vif != vif) 4361 continue; 4362 4363 /* make sure only TDLS peers or the AP are flushed */ 4364 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4365 4366 if (drop) { 4367 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4368 IWL_ERR(mvm, "flush request fail\n"); 4369 } else { 4370 msk |= mvmsta->tfd_queue_msk; 4371 if (iwl_mvm_has_new_tx_api(mvm)) 4372 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4373 } 4374 } 4375 4376 mutex_unlock(&mvm->mutex); 4377 4378 /* this can take a while, and we may need/want other operations 4379 * to succeed while doing this, so do it without the mutex held 4380 */ 4381 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4382 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4383 } 4384 4385 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4386 struct survey_info *survey) 4387 { 4388 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4389 int ret; 4390 4391 memset(survey, 0, sizeof(*survey)); 4392 4393 /* only support global statistics right now */ 4394 if (idx != 0) 4395 return -ENOENT; 4396 4397 if (!fw_has_capa(&mvm->fw->ucode_capa, 4398 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4399 return -ENOENT; 4400 4401 mutex_lock(&mvm->mutex); 4402 4403 if (iwl_mvm_firmware_running(mvm)) { 4404 ret = iwl_mvm_request_statistics(mvm, false); 4405 if (ret) 4406 goto out; 4407 } 4408 4409 survey->filled = SURVEY_INFO_TIME | 4410 SURVEY_INFO_TIME_RX | 4411 SURVEY_INFO_TIME_TX | 4412 SURVEY_INFO_TIME_SCAN; 4413 survey->time = mvm->accu_radio_stats.on_time_rf + 4414 mvm->radio_stats.on_time_rf; 4415 do_div(survey->time, USEC_PER_MSEC); 4416 4417 survey->time_rx = mvm->accu_radio_stats.rx_time + 4418 mvm->radio_stats.rx_time; 4419 do_div(survey->time_rx, USEC_PER_MSEC); 4420 4421 survey->time_tx = mvm->accu_radio_stats.tx_time + 4422 mvm->radio_stats.tx_time; 4423 do_div(survey->time_tx, USEC_PER_MSEC); 4424 4425 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4426 mvm->radio_stats.on_time_scan; 4427 do_div(survey->time_scan, USEC_PER_MSEC); 4428 4429 ret = 0; 4430 out: 4431 mutex_unlock(&mvm->mutex); 4432 return ret; 4433 } 4434 4435 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4436 struct ieee80211_vif *vif, 4437 struct ieee80211_sta *sta, 4438 struct station_info *sinfo) 4439 { 4440 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4441 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4442 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4443 4444 if (mvmsta->avg_energy) { 4445 sinfo->signal_avg = mvmsta->avg_energy; 4446 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4447 } 4448 4449 if (!fw_has_capa(&mvm->fw->ucode_capa, 4450 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4451 return; 4452 4453 /* if beacon filtering isn't on mac80211 does it anyway */ 4454 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4455 return; 4456 4457 if (!vif->bss_conf.assoc) 4458 return; 4459 4460 mutex_lock(&mvm->mutex); 4461 4462 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4463 goto unlock; 4464 4465 if (iwl_mvm_request_statistics(mvm, false)) 4466 goto unlock; 4467 4468 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4469 mvmvif->beacon_stats.accu_num_beacons; 4470 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4471 if (mvmvif->beacon_stats.avg_signal) { 4472 /* firmware only reports a value after RXing a few beacons */ 4473 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4474 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4475 } 4476 unlock: 4477 mutex_unlock(&mvm->mutex); 4478 } 4479 4480 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4481 struct ieee80211_vif *vif, 4482 const struct ieee80211_event *event) 4483 { 4484 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4485 do { \ 4486 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4487 break; \ 4488 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4489 } while (0) 4490 4491 struct iwl_fw_dbg_trigger_tlv *trig; 4492 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4493 4494 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 4495 return; 4496 4497 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 4498 trig_mlme = (void *)trig->data; 4499 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4500 ieee80211_vif_to_wdev(vif), trig)) 4501 return; 4502 4503 if (event->u.mlme.data == ASSOC_EVENT) { 4504 if (event->u.mlme.status == MLME_DENIED) 4505 CHECK_MLME_TRIGGER(stop_assoc_denied, 4506 "DENIED ASSOC: reason %d", 4507 event->u.mlme.reason); 4508 else if (event->u.mlme.status == MLME_TIMEOUT) 4509 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4510 "ASSOC TIMEOUT"); 4511 } else if (event->u.mlme.data == AUTH_EVENT) { 4512 if (event->u.mlme.status == MLME_DENIED) 4513 CHECK_MLME_TRIGGER(stop_auth_denied, 4514 "DENIED AUTH: reason %d", 4515 event->u.mlme.reason); 4516 else if (event->u.mlme.status == MLME_TIMEOUT) 4517 CHECK_MLME_TRIGGER(stop_auth_timeout, 4518 "AUTH TIMEOUT"); 4519 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4520 CHECK_MLME_TRIGGER(stop_rx_deauth, 4521 "DEAUTH RX %d", event->u.mlme.reason); 4522 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4523 CHECK_MLME_TRIGGER(stop_tx_deauth, 4524 "DEAUTH TX %d", event->u.mlme.reason); 4525 } 4526 #undef CHECK_MLME_TRIGGER 4527 } 4528 4529 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4530 struct ieee80211_vif *vif, 4531 const struct ieee80211_event *event) 4532 { 4533 struct iwl_fw_dbg_trigger_tlv *trig; 4534 struct iwl_fw_dbg_trigger_ba *ba_trig; 4535 4536 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4537 return; 4538 4539 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4540 ba_trig = (void *)trig->data; 4541 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4542 ieee80211_vif_to_wdev(vif), trig)) 4543 return; 4544 4545 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4546 return; 4547 4548 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4549 "BAR received from %pM, tid %d, ssn %d", 4550 event->u.ba.sta->addr, event->u.ba.tid, 4551 event->u.ba.ssn); 4552 } 4553 4554 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4555 struct ieee80211_vif *vif, 4556 const struct ieee80211_event *event) 4557 { 4558 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4559 4560 switch (event->type) { 4561 case MLME_EVENT: 4562 iwl_mvm_event_mlme_callback(mvm, vif, event); 4563 break; 4564 case BAR_RX_EVENT: 4565 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4566 break; 4567 case BA_FRAME_TIMEOUT: 4568 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 4569 event->u.ba.tid); 4570 break; 4571 default: 4572 break; 4573 } 4574 } 4575 4576 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4577 struct iwl_mvm_internal_rxq_notif *notif, 4578 u32 size) 4579 { 4580 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4581 int ret; 4582 4583 lockdep_assert_held(&mvm->mutex); 4584 4585 if (!iwl_mvm_has_new_rx_api(mvm)) 4586 return; 4587 4588 notif->cookie = mvm->queue_sync_cookie; 4589 4590 if (notif->sync) 4591 atomic_set(&mvm->queue_sync_counter, 4592 mvm->trans->num_rx_queues); 4593 4594 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4595 if (ret) { 4596 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4597 goto out; 4598 } 4599 4600 if (notif->sync) { 4601 ret = wait_event_timeout(mvm->rx_sync_waitq, 4602 atomic_read(&mvm->queue_sync_counter) == 0 || 4603 iwl_mvm_is_radio_killed(mvm), 4604 HZ); 4605 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 4606 } 4607 4608 out: 4609 atomic_set(&mvm->queue_sync_counter, 0); 4610 mvm->queue_sync_cookie++; 4611 } 4612 4613 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4614 { 4615 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4616 struct iwl_mvm_internal_rxq_notif data = { 4617 .type = IWL_MVM_RXQ_EMPTY, 4618 .sync = 1, 4619 }; 4620 4621 mutex_lock(&mvm->mutex); 4622 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4623 mutex_unlock(&mvm->mutex); 4624 } 4625 4626 const struct ieee80211_ops iwl_mvm_hw_ops = { 4627 .tx = iwl_mvm_mac_tx, 4628 .ampdu_action = iwl_mvm_mac_ampdu_action, 4629 .start = iwl_mvm_mac_start, 4630 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4631 .stop = iwl_mvm_mac_stop, 4632 .add_interface = iwl_mvm_mac_add_interface, 4633 .remove_interface = iwl_mvm_mac_remove_interface, 4634 .config = iwl_mvm_mac_config, 4635 .prepare_multicast = iwl_mvm_prepare_multicast, 4636 .configure_filter = iwl_mvm_configure_filter, 4637 .config_iface_filter = iwl_mvm_config_iface_filter, 4638 .bss_info_changed = iwl_mvm_bss_info_changed, 4639 .hw_scan = iwl_mvm_mac_hw_scan, 4640 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4641 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4642 .sta_state = iwl_mvm_mac_sta_state, 4643 .sta_notify = iwl_mvm_mac_sta_notify, 4644 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4645 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4646 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4647 .sta_rc_update = iwl_mvm_sta_rc_update, 4648 .conf_tx = iwl_mvm_mac_conf_tx, 4649 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4650 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4651 .flush = iwl_mvm_mac_flush, 4652 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4653 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4654 .set_key = iwl_mvm_mac_set_key, 4655 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4656 .remain_on_channel = iwl_mvm_roc, 4657 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4658 .add_chanctx = iwl_mvm_add_chanctx, 4659 .remove_chanctx = iwl_mvm_remove_chanctx, 4660 .change_chanctx = iwl_mvm_change_chanctx, 4661 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4662 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4663 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4664 4665 .start_ap = iwl_mvm_start_ap_ibss, 4666 .stop_ap = iwl_mvm_stop_ap_ibss, 4667 .join_ibss = iwl_mvm_start_ap_ibss, 4668 .leave_ibss = iwl_mvm_stop_ap_ibss, 4669 4670 .tx_last_beacon = iwl_mvm_tx_last_beacon, 4671 4672 .set_tim = iwl_mvm_set_tim, 4673 4674 .channel_switch = iwl_mvm_channel_switch, 4675 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4676 .post_channel_switch = iwl_mvm_post_channel_switch, 4677 4678 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4679 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4680 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4681 4682 .event_callback = iwl_mvm_mac_event_callback, 4683 4684 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4685 4686 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4687 4688 #ifdef CONFIG_PM_SLEEP 4689 /* look at d3.c */ 4690 .suspend = iwl_mvm_suspend, 4691 .resume = iwl_mvm_resume, 4692 .set_wakeup = iwl_mvm_set_wakeup, 4693 .set_rekey_data = iwl_mvm_set_rekey_data, 4694 #if IS_ENABLED(CONFIG_IPV6) 4695 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4696 #endif 4697 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4698 #endif 4699 .get_survey = iwl_mvm_mac_get_survey, 4700 .sta_statistics = iwl_mvm_mac_sta_statistics, 4701 #ifdef CONFIG_IWLWIFI_DEBUGFS 4702 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 4703 #endif 4704 }; 4705