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 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 25 * USA 26 * 27 * The full GNU General Public License is included in this distribution 28 * in the file called COPYING. 29 * 30 * Contact Information: 31 * Intel Linux Wireless <linuxwifi@intel.com> 32 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 33 * 34 * BSD LICENSE 35 * 36 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 37 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 38 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 39 * Copyright(c) 2018 Intel Corporation 40 * All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 46 * * Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * * Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in 50 * the documentation and/or other materials provided with the 51 * distribution. 52 * * Neither the name Intel Corporation nor the names of its 53 * contributors may be used to endorse or promote products derived 54 * from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 57 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 58 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 59 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 60 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 61 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 62 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 66 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 * 68 *****************************************************************************/ 69 #include <linux/kernel.h> 70 #include <linux/slab.h> 71 #include <linux/skbuff.h> 72 #include <linux/netdevice.h> 73 #include <linux/etherdevice.h> 74 #include <linux/ip.h> 75 #include <linux/if_arp.h> 76 #include <linux/time.h> 77 #include <net/mac80211.h> 78 #include <net/ieee80211_radiotap.h> 79 #include <net/tcp.h> 80 81 #include "iwl-op-mode.h" 82 #include "iwl-io.h" 83 #include "mvm.h" 84 #include "sta.h" 85 #include "time-event.h" 86 #include "iwl-eeprom-parse.h" 87 #include "iwl-phy-db.h" 88 #include "testmode.h" 89 #include "fw/error-dump.h" 90 #include "iwl-prph.h" 91 #include "iwl-nvm-parse.h" 92 93 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 94 { 95 .max = 1, 96 .types = BIT(NL80211_IFTYPE_STATION), 97 }, 98 { 99 .max = 1, 100 .types = BIT(NL80211_IFTYPE_AP) | 101 BIT(NL80211_IFTYPE_P2P_CLIENT) | 102 BIT(NL80211_IFTYPE_P2P_GO), 103 }, 104 { 105 .max = 1, 106 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 107 }, 108 }; 109 110 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 111 { 112 .num_different_channels = 2, 113 .max_interfaces = 3, 114 .limits = iwl_mvm_limits, 115 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 116 }, 117 }; 118 119 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 120 /* 121 * Use the reserved field to indicate magic values. 122 * these values will only be used internally by the driver, 123 * and won't make it to the fw (reserved will be 0). 124 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 125 * be the vif's ip address. in case there is not a single 126 * ip address (0, or more than 1), this attribute will 127 * be skipped. 128 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 129 * the LSB bytes of the vif's mac address 130 */ 131 enum { 132 BC_FILTER_MAGIC_NONE = 0, 133 BC_FILTER_MAGIC_IP, 134 BC_FILTER_MAGIC_MAC, 135 }; 136 137 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 138 { 139 /* arp */ 140 .discard = 0, 141 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 142 .attrs = { 143 { 144 /* frame type - arp, hw type - ethernet */ 145 .offset_type = 146 BCAST_FILTER_OFFSET_PAYLOAD_START, 147 .offset = sizeof(rfc1042_header), 148 .val = cpu_to_be32(0x08060001), 149 .mask = cpu_to_be32(0xffffffff), 150 }, 151 { 152 /* arp dest ip */ 153 .offset_type = 154 BCAST_FILTER_OFFSET_PAYLOAD_START, 155 .offset = sizeof(rfc1042_header) + 2 + 156 sizeof(struct arphdr) + 157 ETH_ALEN + sizeof(__be32) + 158 ETH_ALEN, 159 .mask = cpu_to_be32(0xffffffff), 160 /* mark it as special field */ 161 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 162 }, 163 }, 164 }, 165 { 166 /* dhcp offer bcast */ 167 .discard = 0, 168 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 169 .attrs = { 170 { 171 /* udp dest port - 68 (bootp client)*/ 172 .offset_type = BCAST_FILTER_OFFSET_IP_END, 173 .offset = offsetof(struct udphdr, dest), 174 .val = cpu_to_be32(0x00440000), 175 .mask = cpu_to_be32(0xffff0000), 176 }, 177 { 178 /* dhcp - lsb bytes of client hw address */ 179 .offset_type = BCAST_FILTER_OFFSET_IP_END, 180 .offset = 38, 181 .mask = cpu_to_be32(0xffffffff), 182 /* mark it as special field */ 183 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 184 }, 185 }, 186 }, 187 /* last filter must be empty */ 188 {}, 189 }; 190 #endif 191 192 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 193 { 194 if (!iwl_mvm_is_d0i3_supported(mvm)) 195 return; 196 197 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); 198 spin_lock_bh(&mvm->refs_lock); 199 mvm->refs[ref_type]++; 200 spin_unlock_bh(&mvm->refs_lock); 201 iwl_trans_ref(mvm->trans); 202 } 203 204 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 205 { 206 if (!iwl_mvm_is_d0i3_supported(mvm)) 207 return; 208 209 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); 210 spin_lock_bh(&mvm->refs_lock); 211 if (WARN_ON(!mvm->refs[ref_type])) { 212 spin_unlock_bh(&mvm->refs_lock); 213 return; 214 } 215 mvm->refs[ref_type]--; 216 spin_unlock_bh(&mvm->refs_lock); 217 iwl_trans_unref(mvm->trans); 218 } 219 220 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, 221 enum iwl_mvm_ref_type except_ref) 222 { 223 int i, j; 224 225 if (!iwl_mvm_is_d0i3_supported(mvm)) 226 return; 227 228 spin_lock_bh(&mvm->refs_lock); 229 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 230 if (except_ref == i || !mvm->refs[i]) 231 continue; 232 233 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", 234 i, mvm->refs[i]); 235 for (j = 0; j < mvm->refs[i]; j++) 236 iwl_trans_unref(mvm->trans); 237 mvm->refs[i] = 0; 238 } 239 spin_unlock_bh(&mvm->refs_lock); 240 } 241 242 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) 243 { 244 int i; 245 bool taken = false; 246 247 if (!iwl_mvm_is_d0i3_supported(mvm)) 248 return true; 249 250 spin_lock_bh(&mvm->refs_lock); 251 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 252 if (mvm->refs[i]) { 253 taken = true; 254 break; 255 } 256 } 257 spin_unlock_bh(&mvm->refs_lock); 258 259 return taken; 260 } 261 262 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 263 { 264 iwl_mvm_ref(mvm, ref_type); 265 266 if (!wait_event_timeout(mvm->d0i3_exit_waitq, 267 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), 268 HZ)) { 269 WARN_ON_ONCE(1); 270 iwl_mvm_unref(mvm, ref_type); 271 return -EIO; 272 } 273 274 return 0; 275 } 276 277 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 278 { 279 int i; 280 281 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 282 for (i = 0; i < NUM_PHY_CTX; i++) { 283 mvm->phy_ctxts[i].id = i; 284 mvm->phy_ctxts[i].ref = 0; 285 } 286 } 287 288 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 289 const char *alpha2, 290 enum iwl_mcc_source src_id, 291 bool *changed) 292 { 293 struct ieee80211_regdomain *regd = NULL; 294 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 295 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 296 struct iwl_mcc_update_resp *resp; 297 298 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 299 300 lockdep_assert_held(&mvm->mutex); 301 302 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 303 if (IS_ERR_OR_NULL(resp)) { 304 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 305 PTR_ERR_OR_ZERO(resp)); 306 goto out; 307 } 308 309 if (changed) 310 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE); 311 312 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 313 __le32_to_cpu(resp->n_channels), 314 resp->channels, 315 __le16_to_cpu(resp->mcc), 316 __le16_to_cpu(resp->geo_info)); 317 /* Store the return source id */ 318 src_id = resp->source_id; 319 kfree(resp); 320 if (IS_ERR_OR_NULL(regd)) { 321 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 322 PTR_ERR_OR_ZERO(regd)); 323 goto out; 324 } 325 326 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 327 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 328 mvm->lar_regdom_set = true; 329 mvm->mcc_src = src_id; 330 331 out: 332 return regd; 333 } 334 335 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 336 { 337 bool changed; 338 struct ieee80211_regdomain *regd; 339 340 if (!iwl_mvm_is_lar_supported(mvm)) 341 return; 342 343 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 344 if (!IS_ERR_OR_NULL(regd)) { 345 /* only update the regulatory core if changed */ 346 if (changed) 347 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 348 349 kfree(regd); 350 } 351 } 352 353 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 354 bool *changed) 355 { 356 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 357 iwl_mvm_is_wifi_mcc_supported(mvm) ? 358 MCC_SOURCE_GET_CURRENT : 359 MCC_SOURCE_OLD_FW, changed); 360 } 361 362 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 363 { 364 enum iwl_mcc_source used_src; 365 struct ieee80211_regdomain *regd; 366 int ret; 367 bool changed; 368 const struct ieee80211_regdomain *r = 369 rtnl_dereference(mvm->hw->wiphy->regd); 370 371 if (!r) 372 return -ENOENT; 373 374 /* save the last source in case we overwrite it below */ 375 used_src = mvm->mcc_src; 376 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 377 /* Notify the firmware we support wifi location updates */ 378 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 379 if (!IS_ERR_OR_NULL(regd)) 380 kfree(regd); 381 } 382 383 /* Now set our last stored MCC and source */ 384 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 385 &changed); 386 if (IS_ERR_OR_NULL(regd)) 387 return -EIO; 388 389 /* update cfg80211 if the regdomain was changed */ 390 if (changed) 391 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 392 else 393 ret = 0; 394 395 kfree(regd); 396 return ret; 397 } 398 399 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 400 { 401 struct ieee80211_hw *hw = mvm->hw; 402 int num_mac, ret, i; 403 static const u32 mvm_ciphers[] = { 404 WLAN_CIPHER_SUITE_WEP40, 405 WLAN_CIPHER_SUITE_WEP104, 406 WLAN_CIPHER_SUITE_TKIP, 407 WLAN_CIPHER_SUITE_CCMP, 408 }; 409 410 /* Tell mac80211 our characteristics */ 411 ieee80211_hw_set(hw, SIGNAL_DBM); 412 ieee80211_hw_set(hw, SPECTRUM_MGMT); 413 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 414 ieee80211_hw_set(hw, QUEUE_CONTROL); 415 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 416 ieee80211_hw_set(hw, SUPPORTS_PS); 417 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 418 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 419 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 420 ieee80211_hw_set(hw, CONNECTION_MONITOR); 421 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 422 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 423 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 424 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 425 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 426 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 427 428 if (iwl_mvm_has_tlc_offload(mvm)) { 429 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 430 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 431 } 432 433 if (iwl_mvm_has_new_rx_api(mvm)) 434 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 435 436 if (fw_has_capa(&mvm->fw->ucode_capa, 437 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 438 ieee80211_hw_set(hw, AP_LINK_PS); 439 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 440 /* 441 * we absolutely need this for the new TX API since that comes 442 * with many more queues than the current code can deal with 443 * for station powersave 444 */ 445 return -EINVAL; 446 } 447 448 if (mvm->trans->num_rx_queues > 1) 449 ieee80211_hw_set(hw, USES_RSS); 450 451 if (mvm->trans->max_skb_frags) 452 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 453 454 hw->queues = IEEE80211_MAX_QUEUES; 455 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 456 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 457 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 458 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 459 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 460 461 hw->radiotap_timestamp.units_pos = 462 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 463 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 464 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 465 hw->radiotap_timestamp.accuracy = 22; 466 467 if (!iwl_mvm_has_tlc_offload(mvm)) 468 hw->rate_control_algorithm = RS_NAME; 469 470 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 471 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 472 473 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 474 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 475 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 476 hw->wiphy->cipher_suites = mvm->ciphers; 477 478 if (iwl_mvm_has_new_rx_api(mvm)) { 479 mvm->ciphers[hw->wiphy->n_cipher_suites] = 480 WLAN_CIPHER_SUITE_GCMP; 481 hw->wiphy->n_cipher_suites++; 482 mvm->ciphers[hw->wiphy->n_cipher_suites] = 483 WLAN_CIPHER_SUITE_GCMP_256; 484 hw->wiphy->n_cipher_suites++; 485 } 486 487 /* Enable 11w if software crypto is not enabled (as the 488 * firmware will interpret some mgmt packets, so enabling it 489 * with software crypto isn't safe). 490 */ 491 if (!iwlwifi_mod_params.swcrypto) { 492 ieee80211_hw_set(hw, MFP_CAPABLE); 493 mvm->ciphers[hw->wiphy->n_cipher_suites] = 494 WLAN_CIPHER_SUITE_AES_CMAC; 495 hw->wiphy->n_cipher_suites++; 496 if (iwl_mvm_has_new_rx_api(mvm)) { 497 mvm->ciphers[hw->wiphy->n_cipher_suites] = 498 WLAN_CIPHER_SUITE_BIP_GMAC_128; 499 hw->wiphy->n_cipher_suites++; 500 mvm->ciphers[hw->wiphy->n_cipher_suites] = 501 WLAN_CIPHER_SUITE_BIP_GMAC_256; 502 hw->wiphy->n_cipher_suites++; 503 } 504 } 505 506 /* currently FW API supports only one optional cipher scheme */ 507 if (mvm->fw->cs[0].cipher) { 508 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 509 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 510 511 mvm->hw->n_cipher_schemes = 1; 512 513 cs->cipher = le32_to_cpu(fwcs->cipher); 514 cs->iftype = BIT(NL80211_IFTYPE_STATION); 515 cs->hdr_len = fwcs->hdr_len; 516 cs->pn_len = fwcs->pn_len; 517 cs->pn_off = fwcs->pn_off; 518 cs->key_idx_off = fwcs->key_idx_off; 519 cs->key_idx_mask = fwcs->key_idx_mask; 520 cs->key_idx_shift = fwcs->key_idx_shift; 521 cs->mic_len = fwcs->mic_len; 522 523 mvm->hw->cipher_schemes = mvm->cs; 524 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 525 hw->wiphy->n_cipher_suites++; 526 } 527 528 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 529 hw->wiphy->features |= 530 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 531 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 532 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 533 534 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 535 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 536 hw->chanctx_data_size = sizeof(u16); 537 538 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 539 BIT(NL80211_IFTYPE_P2P_CLIENT) | 540 BIT(NL80211_IFTYPE_AP) | 541 BIT(NL80211_IFTYPE_P2P_GO) | 542 BIT(NL80211_IFTYPE_P2P_DEVICE) | 543 BIT(NL80211_IFTYPE_ADHOC); 544 545 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 546 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 547 if (iwl_mvm_is_lar_supported(mvm)) 548 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 549 else 550 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 551 REGULATORY_DISABLE_BEACON_HINTS; 552 553 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 554 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 555 556 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 557 hw->wiphy->n_iface_combinations = 558 ARRAY_SIZE(iwl_mvm_iface_combinations); 559 560 hw->wiphy->max_remain_on_channel_duration = 10000; 561 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 562 /* we can compensate an offset of up to 3 channels = 15 MHz */ 563 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5; 564 565 /* Extract MAC address */ 566 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 567 hw->wiphy->addresses = mvm->addresses; 568 hw->wiphy->n_addresses = 1; 569 570 /* Extract additional MAC addresses if available */ 571 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 572 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 573 574 for (i = 1; i < num_mac; i++) { 575 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 576 ETH_ALEN); 577 mvm->addresses[i].addr[5]++; 578 hw->wiphy->n_addresses++; 579 } 580 581 iwl_mvm_reset_phy_ctxts(mvm); 582 583 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 584 585 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 586 587 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 588 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 589 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 590 591 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 592 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 593 else 594 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 595 596 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 597 hw->wiphy->bands[NL80211_BAND_2GHZ] = 598 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 599 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 600 hw->wiphy->bands[NL80211_BAND_5GHZ] = 601 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 602 603 if (fw_has_capa(&mvm->fw->ucode_capa, 604 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 605 fw_has_api(&mvm->fw->ucode_capa, 606 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 607 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 608 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 609 } 610 611 hw->wiphy->hw_version = mvm->trans->hw_id; 612 613 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 614 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 615 else 616 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 617 618 hw->wiphy->max_sched_scan_reqs = 1; 619 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 620 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 621 /* we create the 802.11 header and zero length SSID IE. */ 622 hw->wiphy->max_sched_scan_ie_len = 623 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 624 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 625 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 626 627 /* 628 * the firmware uses u8 for num of iterations, but 0xff is saved for 629 * infinite loop, so the maximum number of iterations is actually 254. 630 */ 631 hw->wiphy->max_sched_scan_plan_iterations = 254; 632 633 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 634 NL80211_FEATURE_LOW_PRIORITY_SCAN | 635 NL80211_FEATURE_P2P_GO_OPPPS | 636 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 637 NL80211_FEATURE_DYNAMIC_SMPS | 638 NL80211_FEATURE_STATIC_SMPS | 639 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 640 641 if (fw_has_capa(&mvm->fw->ucode_capa, 642 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 643 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 644 if (fw_has_capa(&mvm->fw->ucode_capa, 645 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 646 hw->wiphy->features |= NL80211_FEATURE_QUIET; 647 648 if (fw_has_capa(&mvm->fw->ucode_capa, 649 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 650 hw->wiphy->features |= 651 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 652 653 if (fw_has_capa(&mvm->fw->ucode_capa, 654 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 655 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 656 657 if (fw_has_api(&mvm->fw->ucode_capa, 658 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 659 wiphy_ext_feature_set(hw->wiphy, 660 NL80211_EXT_FEATURE_SCAN_START_TIME); 661 wiphy_ext_feature_set(hw->wiphy, 662 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 663 wiphy_ext_feature_set(hw->wiphy, 664 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 665 } 666 667 if (iwl_mvm_is_oce_supported(mvm)) { 668 wiphy_ext_feature_set(hw->wiphy, 669 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 670 wiphy_ext_feature_set(hw->wiphy, 671 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 672 wiphy_ext_feature_set(hw->wiphy, 673 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 674 wiphy_ext_feature_set(hw->wiphy, 675 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 676 } 677 678 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 679 680 #ifdef CONFIG_PM_SLEEP 681 if (iwl_mvm_is_d0i3_supported(mvm) && 682 device_can_wakeup(mvm->trans->dev)) { 683 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 684 hw->wiphy->wowlan = &mvm->wowlan; 685 } 686 687 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec && 688 mvm->trans->ops->d3_suspend && 689 mvm->trans->ops->d3_resume && 690 device_can_wakeup(mvm->trans->dev)) { 691 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 692 WIPHY_WOWLAN_DISCONNECT | 693 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 694 WIPHY_WOWLAN_RFKILL_RELEASE | 695 WIPHY_WOWLAN_NET_DETECT; 696 if (!iwlwifi_mod_params.swcrypto) 697 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 698 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 699 WIPHY_WOWLAN_4WAY_HANDSHAKE; 700 701 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 702 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 703 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 704 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 705 hw->wiphy->wowlan = &mvm->wowlan; 706 } 707 #endif 708 709 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 710 /* assign default bcast filtering configuration */ 711 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 712 #endif 713 714 ret = iwl_mvm_leds_init(mvm); 715 if (ret) 716 return ret; 717 718 if (fw_has_capa(&mvm->fw->ucode_capa, 719 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 720 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 721 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 722 ieee80211_hw_set(hw, TDLS_WIDER_BW); 723 } 724 725 if (fw_has_capa(&mvm->fw->ucode_capa, 726 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 727 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 728 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 729 } 730 731 hw->netdev_features |= mvm->cfg->features; 732 if (!iwl_mvm_is_csum_supported(mvm)) { 733 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 734 NETIF_F_RXCSUM); 735 /* We may support SW TX CSUM */ 736 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 737 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 738 } 739 740 ret = ieee80211_register_hw(mvm->hw); 741 if (ret) 742 iwl_mvm_leds_exit(mvm); 743 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 744 745 if (mvm->cfg->vht_mu_mimo_supported) 746 wiphy_ext_feature_set(hw->wiphy, 747 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 748 749 return ret; 750 } 751 752 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 753 struct ieee80211_sta *sta, 754 struct sk_buff *skb) 755 { 756 struct iwl_mvm_sta *mvmsta; 757 bool defer = false; 758 759 /* 760 * double check the IN_D0I3 flag both before and after 761 * taking the spinlock, in order to prevent taking 762 * the spinlock when not needed. 763 */ 764 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 765 return false; 766 767 spin_lock(&mvm->d0i3_tx_lock); 768 /* 769 * testing the flag again ensures the skb dequeue 770 * loop (on d0i3 exit) hasn't run yet. 771 */ 772 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 773 goto out; 774 775 mvmsta = iwl_mvm_sta_from_mac80211(sta); 776 if (mvmsta->sta_id == IWL_MVM_INVALID_STA || 777 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 778 goto out; 779 780 __skb_queue_tail(&mvm->d0i3_tx, skb); 781 ieee80211_stop_queues(mvm->hw); 782 783 /* trigger wakeup */ 784 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 785 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 786 787 defer = true; 788 out: 789 spin_unlock(&mvm->d0i3_tx_lock); 790 return defer; 791 } 792 793 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 794 struct ieee80211_tx_control *control, 795 struct sk_buff *skb) 796 { 797 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 798 struct ieee80211_sta *sta = control->sta; 799 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 800 struct ieee80211_hdr *hdr = (void *)skb->data; 801 802 if (iwl_mvm_is_radio_killed(mvm)) { 803 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 804 goto drop; 805 } 806 807 if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && 808 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 809 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 810 goto drop; 811 812 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 813 if ((info->control.vif->type == NL80211_IFTYPE_AP || 814 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 815 ieee80211_is_mgmt(hdr->frame_control) && 816 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 817 sta = NULL; 818 819 if (sta) { 820 if (iwl_mvm_defer_tx(mvm, sta, skb)) 821 return; 822 if (iwl_mvm_tx_skb(mvm, skb, sta)) 823 goto drop; 824 return; 825 } 826 827 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 828 goto drop; 829 return; 830 drop: 831 ieee80211_free_txskb(hw, skb); 832 } 833 834 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) 835 { 836 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) 837 return false; 838 return true; 839 } 840 841 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) 842 { 843 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) 844 return false; 845 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) 846 return true; 847 848 /* enabled by default */ 849 return true; 850 } 851 852 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 853 do { \ 854 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 855 break; \ 856 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 857 } while (0) 858 859 static void 860 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 861 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 862 enum ieee80211_ampdu_mlme_action action) 863 { 864 struct iwl_fw_dbg_trigger_tlv *trig; 865 struct iwl_fw_dbg_trigger_ba *ba_trig; 866 867 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 868 return; 869 870 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 871 ba_trig = (void *)trig->data; 872 873 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 874 ieee80211_vif_to_wdev(vif), trig)) 875 return; 876 877 switch (action) { 878 case IEEE80211_AMPDU_TX_OPERATIONAL: { 879 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 880 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 881 882 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 883 "TX AGG START: MAC %pM tid %d ssn %d\n", 884 sta->addr, tid, tid_data->ssn); 885 break; 886 } 887 case IEEE80211_AMPDU_TX_STOP_CONT: 888 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 889 "TX AGG STOP: MAC %pM tid %d\n", 890 sta->addr, tid); 891 break; 892 case IEEE80211_AMPDU_RX_START: 893 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 894 "RX AGG START: MAC %pM tid %d ssn %d\n", 895 sta->addr, tid, rx_ba_ssn); 896 break; 897 case IEEE80211_AMPDU_RX_STOP: 898 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 899 "RX AGG STOP: MAC %pM tid %d\n", 900 sta->addr, tid); 901 break; 902 default: 903 break; 904 } 905 } 906 907 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 908 struct ieee80211_vif *vif, 909 struct ieee80211_ampdu_params *params) 910 { 911 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 912 int ret; 913 bool tx_agg_ref = false; 914 struct ieee80211_sta *sta = params->sta; 915 enum ieee80211_ampdu_mlme_action action = params->action; 916 u16 tid = params->tid; 917 u16 *ssn = ¶ms->ssn; 918 u16 buf_size = params->buf_size; 919 bool amsdu = params->amsdu; 920 u16 timeout = params->timeout; 921 922 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 923 sta->addr, tid, action); 924 925 if (!(mvm->nvm_data->sku_cap_11n_enable)) 926 return -EACCES; 927 928 /* return from D0i3 before starting a new Tx aggregation */ 929 switch (action) { 930 case IEEE80211_AMPDU_TX_START: 931 case IEEE80211_AMPDU_TX_STOP_CONT: 932 case IEEE80211_AMPDU_TX_STOP_FLUSH: 933 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 934 case IEEE80211_AMPDU_TX_OPERATIONAL: 935 /* 936 * for tx start, wait synchronously until D0i3 exit to 937 * get the correct sequence number for the tid. 938 * additionally, some other ampdu actions use direct 939 * target access, which is not handled automatically 940 * by the trans layer (unlike commands), so wait for 941 * d0i3 exit in these cases as well. 942 */ 943 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 944 if (ret) 945 return ret; 946 947 tx_agg_ref = true; 948 break; 949 default: 950 break; 951 } 952 953 mutex_lock(&mvm->mutex); 954 955 switch (action) { 956 case IEEE80211_AMPDU_RX_START: 957 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 958 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 959 struct iwl_mvm_vif *mvmvif; 960 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 961 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 962 963 mdata->opened_rx_ba_sessions = true; 964 mvmvif = iwl_mvm_vif_from_mac80211(vif); 965 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 966 } 967 if (!iwl_enable_rx_ampdu(mvm->cfg)) { 968 ret = -EINVAL; 969 break; 970 } 971 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 972 timeout); 973 break; 974 case IEEE80211_AMPDU_RX_STOP: 975 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 976 timeout); 977 break; 978 case IEEE80211_AMPDU_TX_START: 979 if (!iwl_enable_tx_ampdu(mvm->cfg)) { 980 ret = -EINVAL; 981 break; 982 } 983 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 984 break; 985 case IEEE80211_AMPDU_TX_STOP_CONT: 986 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 987 break; 988 case IEEE80211_AMPDU_TX_STOP_FLUSH: 989 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 990 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 991 break; 992 case IEEE80211_AMPDU_TX_OPERATIONAL: 993 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 994 buf_size, amsdu); 995 break; 996 default: 997 WARN_ON_ONCE(1); 998 ret = -EINVAL; 999 break; 1000 } 1001 1002 if (!ret) { 1003 u16 rx_ba_ssn = 0; 1004 1005 if (action == IEEE80211_AMPDU_RX_START) 1006 rx_ba_ssn = *ssn; 1007 1008 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1009 rx_ba_ssn, action); 1010 } 1011 mutex_unlock(&mvm->mutex); 1012 1013 /* 1014 * If the tid is marked as started, we won't use it for offloaded 1015 * traffic on the next D0i3 entry. It's safe to unref. 1016 */ 1017 if (tx_agg_ref) 1018 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 1019 1020 return ret; 1021 } 1022 1023 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1024 struct ieee80211_vif *vif) 1025 { 1026 struct iwl_mvm *mvm = data; 1027 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1028 1029 mvmvif->uploaded = false; 1030 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1031 1032 spin_lock_bh(&mvm->time_event_lock); 1033 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1034 spin_unlock_bh(&mvm->time_event_lock); 1035 1036 mvmvif->phy_ctxt = NULL; 1037 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1038 } 1039 1040 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1041 { 1042 /* clear the D3 reconfig, we only need it to avoid dumping a 1043 * firmware coredump on reconfiguration, we shouldn't do that 1044 * on D3->D0 transition 1045 */ 1046 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) { 1047 mvm->fwrt.dump.desc = &iwl_dump_desc_assert; 1048 iwl_fw_error_dump(&mvm->fwrt); 1049 } 1050 1051 /* cleanup all stale references (scan, roc), but keep the 1052 * ucode_down ref until reconfig is complete 1053 */ 1054 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 1055 1056 iwl_mvm_stop_device(mvm); 1057 1058 mvm->scan_status = 0; 1059 mvm->ps_disabled = false; 1060 mvm->calibrating = false; 1061 1062 /* just in case one was running */ 1063 iwl_mvm_cleanup_roc_te(mvm); 1064 ieee80211_remain_on_channel_expired(mvm->hw); 1065 1066 /* 1067 * cleanup all interfaces, even inactive ones, as some might have 1068 * gone down during the HW restart 1069 */ 1070 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1071 1072 mvm->p2p_device_vif = NULL; 1073 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1074 1075 iwl_mvm_reset_phy_ctxts(mvm); 1076 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1077 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames)); 1078 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1079 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1080 1081 ieee80211_wake_queues(mvm->hw); 1082 1083 /* clear any stale d0i3 state */ 1084 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1085 1086 mvm->vif_count = 0; 1087 mvm->rx_ba_sessions = 0; 1088 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1089 mvm->monitor_on = false; 1090 1091 /* keep statistics ticking */ 1092 iwl_mvm_accu_radio_stats(mvm); 1093 } 1094 1095 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1096 { 1097 int ret; 1098 1099 lockdep_assert_held(&mvm->mutex); 1100 1101 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1102 /* 1103 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1104 * so later code will - from now on - see that we're doing it. 1105 */ 1106 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1107 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1108 /* Clean up some internal and mac80211 state on restart */ 1109 iwl_mvm_restart_cleanup(mvm); 1110 } else { 1111 /* Hold the reference to prevent runtime suspend while 1112 * the start procedure runs. It's a bit confusing 1113 * that the UCODE_DOWN reference is taken, but it just 1114 * means "UCODE is not UP yet". ( TODO: rename this 1115 * reference). 1116 */ 1117 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1118 } 1119 ret = iwl_mvm_up(mvm); 1120 1121 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1122 /* Something went wrong - we need to finish some cleanup 1123 * that normally iwl_mvm_mac_restart_complete() below 1124 * would do. 1125 */ 1126 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1127 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1128 } 1129 1130 return ret; 1131 } 1132 1133 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1134 { 1135 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1136 int ret; 1137 1138 /* Some hw restart cleanups must not hold the mutex */ 1139 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1140 /* 1141 * Make sure we are out of d0i3. This is needed 1142 * to make sure the reference accounting is correct 1143 * (and there is no stale d0i3_exit_work). 1144 */ 1145 wait_event_timeout(mvm->d0i3_exit_waitq, 1146 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1147 &mvm->status), 1148 HZ); 1149 } 1150 1151 mutex_lock(&mvm->mutex); 1152 ret = __iwl_mvm_mac_start(mvm); 1153 mutex_unlock(&mvm->mutex); 1154 1155 return ret; 1156 } 1157 1158 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1159 { 1160 int ret; 1161 1162 mutex_lock(&mvm->mutex); 1163 1164 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1165 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1166 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1167 if (ret) 1168 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1169 ret); 1170 1171 /* allow transport/FW low power modes */ 1172 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1173 1174 /* 1175 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1176 * of packets the FW sent out, so we must reconnect. 1177 */ 1178 iwl_mvm_teardown_tdls_peers(mvm); 1179 1180 mutex_unlock(&mvm->mutex); 1181 } 1182 1183 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1184 { 1185 if (iwl_mvm_is_d0i3_supported(mvm) && 1186 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1187 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1188 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1189 &mvm->status), 1190 HZ), 1191 "D0i3 exit on resume timed out\n"); 1192 } 1193 1194 static void 1195 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1196 enum ieee80211_reconfig_type reconfig_type) 1197 { 1198 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1199 1200 switch (reconfig_type) { 1201 case IEEE80211_RECONFIG_TYPE_RESTART: 1202 iwl_mvm_restart_complete(mvm); 1203 break; 1204 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1205 iwl_mvm_resume_complete(mvm); 1206 break; 1207 } 1208 } 1209 1210 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1211 { 1212 lockdep_assert_held(&mvm->mutex); 1213 1214 /* firmware counters are obviously reset now, but we shouldn't 1215 * partially track so also clear the fw_reset_accu counters. 1216 */ 1217 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1218 1219 /* async_handlers_wk is now blocked */ 1220 1221 /* 1222 * The work item could be running or queued if the 1223 * ROC time event stops just as we get here. 1224 */ 1225 flush_work(&mvm->roc_done_wk); 1226 1227 iwl_mvm_stop_device(mvm); 1228 1229 iwl_mvm_async_handlers_purge(mvm); 1230 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1231 1232 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1233 iwl_mvm_del_aux_sta(mvm); 1234 1235 /* 1236 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() 1237 * won't be called in this case). 1238 * But make sure to cleanup interfaces that have gone down before/during 1239 * HW restart was requested. 1240 */ 1241 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1242 ieee80211_iterate_interfaces(mvm->hw, 0, 1243 iwl_mvm_cleanup_iterator, mvm); 1244 1245 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1246 * make sure there's nothing left there and warn if any is found. 1247 */ 1248 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1249 int i; 1250 1251 for (i = 0; i < mvm->max_scans; i++) { 1252 if (WARN_ONCE(mvm->scan_uid_status[i], 1253 "UMAC scan UID %d status was not cleaned\n", 1254 i)) 1255 mvm->scan_uid_status[i] = 0; 1256 } 1257 } 1258 } 1259 1260 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1261 { 1262 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1263 1264 flush_work(&mvm->d0i3_exit_work); 1265 flush_work(&mvm->async_handlers_wk); 1266 flush_work(&mvm->add_stream_wk); 1267 1268 /* 1269 * Lock and clear the firmware running bit here already, so that 1270 * new commands coming in elsewhere, e.g. from debugfs, will not 1271 * be able to proceed. This is important here because one of those 1272 * debugfs files causes the firmware dump to be triggered, and if we 1273 * don't stop debugfs accesses before canceling that it could be 1274 * retriggered after we flush it but before we've cleared the bit. 1275 */ 1276 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1277 1278 iwl_fw_cancel_dump(&mvm->fwrt); 1279 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1280 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1281 iwl_fw_free_dump_desc(&mvm->fwrt); 1282 1283 mutex_lock(&mvm->mutex); 1284 __iwl_mvm_mac_stop(mvm); 1285 mutex_unlock(&mvm->mutex); 1286 1287 /* 1288 * The worker might have been waiting for the mutex, let it run and 1289 * discover that its list is now empty. 1290 */ 1291 cancel_work_sync(&mvm->async_handlers_wk); 1292 } 1293 1294 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1295 { 1296 u16 i; 1297 1298 lockdep_assert_held(&mvm->mutex); 1299 1300 for (i = 0; i < NUM_PHY_CTX; i++) 1301 if (!mvm->phy_ctxts[i].ref) 1302 return &mvm->phy_ctxts[i]; 1303 1304 IWL_ERR(mvm, "No available PHY context\n"); 1305 return NULL; 1306 } 1307 1308 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1309 s16 tx_power) 1310 { 1311 struct iwl_dev_tx_power_cmd cmd = { 1312 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1313 .v3.mac_context_id = 1314 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1315 .v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1316 }; 1317 int len = sizeof(cmd); 1318 1319 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1320 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1321 1322 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1323 len = sizeof(cmd.v3); 1324 1325 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1326 } 1327 1328 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1329 struct ieee80211_vif *vif) 1330 { 1331 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1332 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1333 int ret; 1334 1335 mvmvif->mvm = mvm; 1336 1337 /* 1338 * make sure D0i3 exit is completed, otherwise a target access 1339 * during tx queue configuration could be done when still in 1340 * D0i3 state. 1341 */ 1342 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1343 if (ret) 1344 return ret; 1345 1346 /* 1347 * Not much to do here. The stack will not allow interface 1348 * types or combinations that we didn't advertise, so we 1349 * don't really have to check the types. 1350 */ 1351 1352 mutex_lock(&mvm->mutex); 1353 1354 /* make sure that beacon statistics don't go backwards with FW reset */ 1355 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1356 mvmvif->beacon_stats.accu_num_beacons += 1357 mvmvif->beacon_stats.num_beacons; 1358 1359 /* Allocate resources for the MAC context, and add it to the fw */ 1360 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1361 if (ret) 1362 goto out_unlock; 1363 1364 /* Counting number of interfaces is needed for legacy PM */ 1365 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1366 mvm->vif_count++; 1367 1368 /* 1369 * The AP binding flow can be done only after the beacon 1370 * template is configured (which happens only in the mac80211 1371 * start_ap() flow), and adding the broadcast station can happen 1372 * only after the binding. 1373 * In addition, since modifying the MAC before adding a bcast 1374 * station is not allowed by the FW, delay the adding of MAC context to 1375 * the point where we can also add the bcast station. 1376 * In short: there's not much we can do at this point, other than 1377 * allocating resources :) 1378 */ 1379 if (vif->type == NL80211_IFTYPE_AP || 1380 vif->type == NL80211_IFTYPE_ADHOC) { 1381 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1382 if (ret) { 1383 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1384 goto out_release; 1385 } 1386 1387 /* 1388 * Only queue for this station is the mcast queue, 1389 * which shouldn't be in TFD mask anyway 1390 */ 1391 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1392 0, vif->type, 1393 IWL_STA_MULTICAST); 1394 if (ret) 1395 goto out_release; 1396 1397 iwl_mvm_vif_dbgfs_register(mvm, vif); 1398 goto out_unlock; 1399 } 1400 1401 mvmvif->features |= hw->netdev_features; 1402 1403 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1404 if (ret) 1405 goto out_release; 1406 1407 ret = iwl_mvm_power_update_mac(mvm); 1408 if (ret) 1409 goto out_remove_mac; 1410 1411 /* beacon filtering */ 1412 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1413 if (ret) 1414 goto out_remove_mac; 1415 1416 if (!mvm->bf_allowed_vif && 1417 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1418 mvm->bf_allowed_vif = mvmvif; 1419 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1420 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1421 } 1422 1423 /* 1424 * P2P_DEVICE interface does not have a channel context assigned to it, 1425 * so a dedicated PHY context is allocated to it and the corresponding 1426 * MAC context is bound to it at this stage. 1427 */ 1428 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1429 1430 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1431 if (!mvmvif->phy_ctxt) { 1432 ret = -ENOSPC; 1433 goto out_free_bf; 1434 } 1435 1436 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1437 ret = iwl_mvm_binding_add_vif(mvm, vif); 1438 if (ret) 1439 goto out_unref_phy; 1440 1441 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1442 if (ret) 1443 goto out_unbind; 1444 1445 /* Save a pointer to p2p device vif, so it can later be used to 1446 * update the p2p device MAC when a GO is started/stopped */ 1447 mvm->p2p_device_vif = vif; 1448 } 1449 1450 iwl_mvm_tcm_add_vif(mvm, vif); 1451 1452 if (vif->type == NL80211_IFTYPE_MONITOR) 1453 mvm->monitor_on = true; 1454 1455 iwl_mvm_vif_dbgfs_register(mvm, vif); 1456 goto out_unlock; 1457 1458 out_unbind: 1459 iwl_mvm_binding_remove_vif(mvm, vif); 1460 out_unref_phy: 1461 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1462 out_free_bf: 1463 if (mvm->bf_allowed_vif == mvmvif) { 1464 mvm->bf_allowed_vif = NULL; 1465 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1466 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1467 } 1468 out_remove_mac: 1469 mvmvif->phy_ctxt = NULL; 1470 iwl_mvm_mac_ctxt_remove(mvm, vif); 1471 out_release: 1472 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1473 mvm->vif_count--; 1474 out_unlock: 1475 mutex_unlock(&mvm->mutex); 1476 1477 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1478 1479 return ret; 1480 } 1481 1482 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1483 struct ieee80211_vif *vif) 1484 { 1485 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1486 /* 1487 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1488 * We assume here that all the packets sent to the OFFCHANNEL 1489 * queue are sent in ROC session. 1490 */ 1491 flush_work(&mvm->roc_done_wk); 1492 } 1493 } 1494 1495 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1496 struct ieee80211_vif *vif) 1497 { 1498 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1499 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1500 1501 iwl_mvm_prepare_mac_removal(mvm, vif); 1502 1503 if (!(vif->type == NL80211_IFTYPE_AP || 1504 vif->type == NL80211_IFTYPE_ADHOC)) 1505 iwl_mvm_tcm_rm_vif(mvm, vif); 1506 1507 mutex_lock(&mvm->mutex); 1508 1509 if (mvm->bf_allowed_vif == mvmvif) { 1510 mvm->bf_allowed_vif = NULL; 1511 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1512 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1513 } 1514 1515 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1516 1517 /* 1518 * For AP/GO interface, the tear down of the resources allocated to the 1519 * interface is be handled as part of the stop_ap flow. 1520 */ 1521 if (vif->type == NL80211_IFTYPE_AP || 1522 vif->type == NL80211_IFTYPE_ADHOC) { 1523 #ifdef CONFIG_NL80211_TESTMODE 1524 if (vif == mvm->noa_vif) { 1525 mvm->noa_vif = NULL; 1526 mvm->noa_duration = 0; 1527 } 1528 #endif 1529 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1530 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1531 goto out_release; 1532 } 1533 1534 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1535 mvm->p2p_device_vif = NULL; 1536 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1537 iwl_mvm_binding_remove_vif(mvm, vif); 1538 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1539 mvmvif->phy_ctxt = NULL; 1540 } 1541 1542 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1543 mvm->vif_count--; 1544 1545 iwl_mvm_power_update_mac(mvm); 1546 iwl_mvm_mac_ctxt_remove(mvm, vif); 1547 1548 if (vif->type == NL80211_IFTYPE_MONITOR) 1549 mvm->monitor_on = false; 1550 1551 out_release: 1552 mutex_unlock(&mvm->mutex); 1553 } 1554 1555 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1556 { 1557 return 0; 1558 } 1559 1560 struct iwl_mvm_mc_iter_data { 1561 struct iwl_mvm *mvm; 1562 int port_id; 1563 }; 1564 1565 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1566 struct ieee80211_vif *vif) 1567 { 1568 struct iwl_mvm_mc_iter_data *data = _data; 1569 struct iwl_mvm *mvm = data->mvm; 1570 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1571 struct iwl_host_cmd hcmd = { 1572 .id = MCAST_FILTER_CMD, 1573 .flags = CMD_ASYNC, 1574 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1575 }; 1576 int ret, len; 1577 1578 /* if we don't have free ports, mcast frames will be dropped */ 1579 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1580 return; 1581 1582 if (vif->type != NL80211_IFTYPE_STATION || 1583 !vif->bss_conf.assoc) 1584 return; 1585 1586 cmd->port_id = data->port_id++; 1587 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1588 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1589 1590 hcmd.len[0] = len; 1591 hcmd.data[0] = cmd; 1592 1593 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1594 if (ret) 1595 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1596 } 1597 1598 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1599 { 1600 struct iwl_mvm_mc_iter_data iter_data = { 1601 .mvm = mvm, 1602 }; 1603 1604 lockdep_assert_held(&mvm->mutex); 1605 1606 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1607 return; 1608 1609 ieee80211_iterate_active_interfaces_atomic( 1610 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1611 iwl_mvm_mc_iface_iterator, &iter_data); 1612 } 1613 1614 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1615 struct netdev_hw_addr_list *mc_list) 1616 { 1617 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1618 struct iwl_mcast_filter_cmd *cmd; 1619 struct netdev_hw_addr *addr; 1620 int addr_count; 1621 bool pass_all; 1622 int len; 1623 1624 addr_count = netdev_hw_addr_list_count(mc_list); 1625 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1626 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1627 if (pass_all) 1628 addr_count = 0; 1629 1630 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1631 cmd = kzalloc(len, GFP_ATOMIC); 1632 if (!cmd) 1633 return 0; 1634 1635 if (pass_all) { 1636 cmd->pass_all = 1; 1637 return (u64)(unsigned long)cmd; 1638 } 1639 1640 netdev_hw_addr_list_for_each(addr, mc_list) { 1641 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1642 cmd->count, addr->addr); 1643 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1644 addr->addr, ETH_ALEN); 1645 cmd->count++; 1646 } 1647 1648 return (u64)(unsigned long)cmd; 1649 } 1650 1651 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1652 unsigned int changed_flags, 1653 unsigned int *total_flags, 1654 u64 multicast) 1655 { 1656 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1657 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1658 1659 mutex_lock(&mvm->mutex); 1660 1661 /* replace previous configuration */ 1662 kfree(mvm->mcast_filter_cmd); 1663 mvm->mcast_filter_cmd = cmd; 1664 1665 if (!cmd) 1666 goto out; 1667 1668 if (changed_flags & FIF_ALLMULTI) 1669 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1670 1671 if (cmd->pass_all) 1672 cmd->count = 0; 1673 1674 iwl_mvm_recalc_multicast(mvm); 1675 out: 1676 mutex_unlock(&mvm->mutex); 1677 *total_flags = 0; 1678 } 1679 1680 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1681 struct ieee80211_vif *vif, 1682 unsigned int filter_flags, 1683 unsigned int changed_flags) 1684 { 1685 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1686 1687 /* We support only filter for probe requests */ 1688 if (!(changed_flags & FIF_PROBE_REQ)) 1689 return; 1690 1691 /* Supported only for p2p client interfaces */ 1692 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1693 !vif->p2p) 1694 return; 1695 1696 mutex_lock(&mvm->mutex); 1697 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1698 mutex_unlock(&mvm->mutex); 1699 } 1700 1701 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1702 struct iwl_bcast_iter_data { 1703 struct iwl_mvm *mvm; 1704 struct iwl_bcast_filter_cmd *cmd; 1705 u8 current_filter; 1706 }; 1707 1708 static void 1709 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1710 const struct iwl_fw_bcast_filter *in_filter, 1711 struct iwl_fw_bcast_filter *out_filter) 1712 { 1713 struct iwl_fw_bcast_filter_attr *attr; 1714 int i; 1715 1716 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1717 1718 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1719 attr = &out_filter->attrs[i]; 1720 1721 if (!attr->mask) 1722 break; 1723 1724 switch (attr->reserved1) { 1725 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1726 if (vif->bss_conf.arp_addr_cnt != 1) { 1727 attr->mask = 0; 1728 continue; 1729 } 1730 1731 attr->val = vif->bss_conf.arp_addr_list[0]; 1732 break; 1733 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1734 attr->val = *(__be32 *)&vif->addr[2]; 1735 break; 1736 default: 1737 break; 1738 } 1739 attr->reserved1 = 0; 1740 out_filter->num_attrs++; 1741 } 1742 } 1743 1744 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1745 struct ieee80211_vif *vif) 1746 { 1747 struct iwl_bcast_iter_data *data = _data; 1748 struct iwl_mvm *mvm = data->mvm; 1749 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1750 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1751 struct iwl_fw_bcast_mac *bcast_mac; 1752 int i; 1753 1754 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1755 return; 1756 1757 bcast_mac = &cmd->macs[mvmvif->id]; 1758 1759 /* 1760 * enable filtering only for associated stations, but not for P2P 1761 * Clients 1762 */ 1763 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1764 !vif->bss_conf.assoc) 1765 return; 1766 1767 bcast_mac->default_discard = 1; 1768 1769 /* copy all configured filters */ 1770 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1771 /* 1772 * Make sure we don't exceed our filters limit. 1773 * if there is still a valid filter to be configured, 1774 * be on the safe side and just allow bcast for this mac. 1775 */ 1776 if (WARN_ON_ONCE(data->current_filter >= 1777 ARRAY_SIZE(cmd->filters))) { 1778 bcast_mac->default_discard = 0; 1779 bcast_mac->attached_filters = 0; 1780 break; 1781 } 1782 1783 iwl_mvm_set_bcast_filter(vif, 1784 &mvm->bcast_filters[i], 1785 &cmd->filters[data->current_filter]); 1786 1787 /* skip current filter if it contains no attributes */ 1788 if (!cmd->filters[data->current_filter].num_attrs) 1789 continue; 1790 1791 /* attach the filter to current mac */ 1792 bcast_mac->attached_filters |= 1793 cpu_to_le16(BIT(data->current_filter)); 1794 1795 data->current_filter++; 1796 } 1797 } 1798 1799 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1800 struct iwl_bcast_filter_cmd *cmd) 1801 { 1802 struct iwl_bcast_iter_data iter_data = { 1803 .mvm = mvm, 1804 .cmd = cmd, 1805 }; 1806 1807 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1808 return false; 1809 1810 memset(cmd, 0, sizeof(*cmd)); 1811 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1812 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1813 1814 #ifdef CONFIG_IWLWIFI_DEBUGFS 1815 /* use debugfs filters/macs if override is configured */ 1816 if (mvm->dbgfs_bcast_filtering.override) { 1817 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1818 sizeof(cmd->filters)); 1819 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1820 sizeof(cmd->macs)); 1821 return true; 1822 } 1823 #endif 1824 1825 /* if no filters are configured, do nothing */ 1826 if (!mvm->bcast_filters) 1827 return false; 1828 1829 /* configure and attach these filters for each associated sta vif */ 1830 ieee80211_iterate_active_interfaces( 1831 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1832 iwl_mvm_bcast_filter_iterator, &iter_data); 1833 1834 return true; 1835 } 1836 1837 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1838 { 1839 struct iwl_bcast_filter_cmd cmd; 1840 1841 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1842 return 0; 1843 1844 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1845 return 0; 1846 1847 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1848 sizeof(cmd), &cmd); 1849 } 1850 #else 1851 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1852 { 1853 return 0; 1854 } 1855 #endif 1856 1857 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1858 struct ieee80211_vif *vif) 1859 { 1860 struct iwl_mu_group_mgmt_cmd cmd = {}; 1861 1862 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1863 WLAN_MEMBERSHIP_LEN); 1864 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1865 WLAN_USER_POSITION_LEN); 1866 1867 return iwl_mvm_send_cmd_pdu(mvm, 1868 WIDE_ID(DATA_PATH_GROUP, 1869 UPDATE_MU_GROUPS_CMD), 1870 0, sizeof(cmd), &cmd); 1871 } 1872 1873 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1874 struct ieee80211_vif *vif) 1875 { 1876 if (vif->mu_mimo_owner) { 1877 struct iwl_mu_group_mgmt_notif *notif = _data; 1878 1879 /* 1880 * MU-MIMO Group Id action frame is little endian. We treat 1881 * the data received from firmware as if it came from the 1882 * action frame, so no conversion is needed. 1883 */ 1884 ieee80211_update_mu_groups(vif, 1885 (u8 *)¬if->membership_status, 1886 (u8 *)¬if->user_position); 1887 } 1888 } 1889 1890 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1891 struct iwl_rx_cmd_buffer *rxb) 1892 { 1893 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1894 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1895 1896 ieee80211_iterate_active_interfaces_atomic( 1897 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1898 iwl_mvm_mu_mimo_iface_iterator, notif); 1899 } 1900 1901 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1902 { 1903 u8 byte_num = ppe_pos_bit / 8; 1904 u8 bit_num = ppe_pos_bit % 8; 1905 u8 residue_bits; 1906 u8 res; 1907 1908 if (bit_num <= 5) 1909 return (ppe[byte_num] >> bit_num) & 1910 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 1911 1912 /* 1913 * If bit_num > 5, we have to combine bits with next byte. 1914 * Calculate how many bits we need to take from current byte (called 1915 * here "residue_bits"), and add them to bits from next byte. 1916 */ 1917 1918 residue_bits = 8 - bit_num; 1919 1920 res = (ppe[byte_num + 1] & 1921 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 1922 residue_bits; 1923 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 1924 1925 return res; 1926 } 1927 1928 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 1929 struct ieee80211_vif *vif, u8 sta_id) 1930 { 1931 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1932 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 1933 .sta_id = sta_id, 1934 .tid_limit = IWL_MAX_TID_COUNT, 1935 .bss_color = vif->bss_conf.bss_color, 1936 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 1937 .frame_time_rts_th = 1938 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 1939 }; 1940 struct ieee80211_sta *sta; 1941 u32 flags; 1942 int i; 1943 1944 rcu_read_lock(); 1945 1946 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 1947 if (IS_ERR(sta)) { 1948 rcu_read_unlock(); 1949 WARN(1, "Can't find STA to configure HE\n"); 1950 return; 1951 } 1952 1953 if (!sta->he_cap.has_he) { 1954 rcu_read_unlock(); 1955 return; 1956 } 1957 1958 flags = 0; 1959 1960 /* HTC flags */ 1961 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 1962 IEEE80211_HE_MAC_CAP0_HTC_HE) 1963 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 1964 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 1965 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 1966 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 1967 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 1968 u8 link_adap = 1969 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 1970 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 1971 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 1972 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 1973 1974 if (link_adap == 2) 1975 sta_ctxt_cmd.htc_flags |= 1976 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 1977 else if (link_adap == 3) 1978 sta_ctxt_cmd.htc_flags |= 1979 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 1980 } 1981 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 1982 IEEE80211_HE_MAC_CAP2_UL_MU_RESP_SCHED) 1983 sta_ctxt_cmd.htc_flags |= 1984 cpu_to_le32(IWL_HE_HTC_UL_MU_RESP_SCHED); 1985 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 1986 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 1987 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 1988 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 1989 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 1990 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 1991 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 1992 1993 /* If PPE Thresholds exist, parse them into a FW-familiar format */ 1994 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 1995 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 1996 u8 nss = (sta->he_cap.ppe_thres[0] & 1997 IEEE80211_PPE_THRES_NSS_MASK) + 1; 1998 u8 ru_index_bitmap = 1999 (sta->he_cap.ppe_thres[0] & 2000 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2001 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2002 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2003 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2004 2005 /* 2006 * FW currently supports only nss == MAX_HE_SUPP_NSS 2007 * 2008 * If nss > MAX: we can ignore values we don't support 2009 * If nss < MAX: we can set zeros in other streams 2010 */ 2011 if (nss > MAX_HE_SUPP_NSS) { 2012 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2013 MAX_HE_SUPP_NSS); 2014 nss = MAX_HE_SUPP_NSS; 2015 } 2016 2017 for (i = 0; i < nss; i++) { 2018 u8 ru_index_tmp = ru_index_bitmap << 1; 2019 u8 bw; 2020 2021 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2022 ru_index_tmp >>= 1; 2023 if (!(ru_index_tmp & 1)) 2024 continue; 2025 2026 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2027 iwl_mvm_he_get_ppe_val(ppe, 2028 ppe_pos_bit); 2029 ppe_pos_bit += 2030 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2031 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2032 iwl_mvm_he_get_ppe_val(ppe, 2033 ppe_pos_bit); 2034 ppe_pos_bit += 2035 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2036 } 2037 } 2038 2039 flags |= STA_CTXT_HE_PACKET_EXT; 2040 } 2041 rcu_read_unlock(); 2042 2043 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2044 flags |= STA_CTXT_HE_MU_EDCA_CW; 2045 for (i = 0; i < AC_NUM; i++) { 2046 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2047 &mvmvif->queue_params[i].mu_edca_param_rec; 2048 2049 if (!mvmvif->queue_params[i].mu_edca) { 2050 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2051 break; 2052 } 2053 2054 sta_ctxt_cmd.trig_based_txf[i].cwmin = 2055 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2056 sta_ctxt_cmd.trig_based_txf[i].cwmax = 2057 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2058 sta_ctxt_cmd.trig_based_txf[i].aifsn = 2059 cpu_to_le16(mu_edca->aifsn); 2060 sta_ctxt_cmd.trig_based_txf[i].mu_time = 2061 cpu_to_le16(mu_edca->mu_edca_timer); 2062 } 2063 2064 if (vif->bss_conf.multi_sta_back_32bit) 2065 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2066 2067 if (vif->bss_conf.ack_enabled) 2068 flags |= STA_CTXT_HE_ACK_ENABLED; 2069 2070 if (vif->bss_conf.uora_exists) { 2071 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2072 2073 sta_ctxt_cmd.rand_alloc_ecwmin = 2074 vif->bss_conf.uora_ocw_range & 0x7; 2075 sta_ctxt_cmd.rand_alloc_ecwmax = 2076 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2077 } 2078 2079 /* TODO: support Multi BSSID IE */ 2080 2081 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2082 2083 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2084 DATA_PATH_GROUP, 0), 2085 0, sizeof(sta_ctxt_cmd), &sta_ctxt_cmd)) 2086 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2087 } 2088 2089 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2090 struct ieee80211_vif *vif, 2091 struct ieee80211_bss_conf *bss_conf, 2092 u32 changes) 2093 { 2094 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2095 int ret; 2096 2097 /* 2098 * Re-calculate the tsf id, as the master-slave relations depend on the 2099 * beacon interval, which was not known when the station interface was 2100 * added. 2101 */ 2102 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2103 if (vif->bss_conf.he_support && 2104 !iwlwifi_mod_params.disable_11ax) 2105 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2106 2107 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2108 } 2109 2110 /* 2111 * If we're not associated yet, take the (new) BSSID before associating 2112 * so the firmware knows. If we're already associated, then use the old 2113 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2114 * branch for disassociation below. 2115 */ 2116 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2117 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2118 2119 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2120 if (ret) 2121 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2122 2123 /* after sending it once, adopt mac80211 data */ 2124 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2125 mvmvif->associated = bss_conf->assoc; 2126 2127 if (changes & BSS_CHANGED_ASSOC) { 2128 if (bss_conf->assoc) { 2129 /* clear statistics to get clean beacon counter */ 2130 iwl_mvm_request_statistics(mvm, true); 2131 memset(&mvmvif->beacon_stats, 0, 2132 sizeof(mvmvif->beacon_stats)); 2133 2134 /* add quota for this interface */ 2135 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2136 if (ret) { 2137 IWL_ERR(mvm, "failed to update quotas\n"); 2138 return; 2139 } 2140 2141 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2142 &mvm->status)) { 2143 /* 2144 * If we're restarting then the firmware will 2145 * obviously have lost synchronisation with 2146 * the AP. It will attempt to synchronise by 2147 * itself, but we can make it more reliable by 2148 * scheduling a session protection time event. 2149 * 2150 * The firmware needs to receive a beacon to 2151 * catch up with synchronisation, use 110% of 2152 * the beacon interval. 2153 * 2154 * Set a large maximum delay to allow for more 2155 * than a single interface. 2156 */ 2157 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2158 iwl_mvm_protect_session(mvm, vif, dur, dur, 2159 5 * dur, false); 2160 } 2161 2162 iwl_mvm_sf_update(mvm, vif, false); 2163 iwl_mvm_power_vif_assoc(mvm, vif); 2164 if (vif->p2p) { 2165 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 2166 iwl_mvm_update_smps(mvm, vif, 2167 IWL_MVM_SMPS_REQ_PROT, 2168 IEEE80211_SMPS_DYNAMIC); 2169 } 2170 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2171 /* 2172 * If update fails - SF might be running in associated 2173 * mode while disassociated - which is forbidden. 2174 */ 2175 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 2176 "Failed to update SF upon disassociation\n"); 2177 2178 /* 2179 * If we get an assert during the connection (after the 2180 * station has been added, but before the vif is set 2181 * to associated), mac80211 will re-add the station and 2182 * then configure the vif. Since the vif is not 2183 * associated, we would remove the station here and 2184 * this would fail the recovery. 2185 */ 2186 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2187 &mvm->status)) { 2188 /* 2189 * Remove AP station now that 2190 * the MAC is unassoc 2191 */ 2192 ret = iwl_mvm_rm_sta_id(mvm, vif, 2193 mvmvif->ap_sta_id); 2194 if (ret) 2195 IWL_ERR(mvm, 2196 "failed to remove AP station\n"); 2197 2198 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 2199 mvm->d0i3_ap_sta_id = 2200 IWL_MVM_INVALID_STA; 2201 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2202 } 2203 2204 /* remove quota for this interface */ 2205 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2206 if (ret) 2207 IWL_ERR(mvm, "failed to update quotas\n"); 2208 2209 if (vif->p2p) 2210 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 2211 2212 /* this will take the cleared BSSID from bss_conf */ 2213 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2214 if (ret) 2215 IWL_ERR(mvm, 2216 "failed to update MAC %pM (clear after unassoc)\n", 2217 vif->addr); 2218 } 2219 2220 /* 2221 * The firmware tracks the MU-MIMO group on its own. 2222 * However, on HW restart we should restore this data. 2223 */ 2224 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2225 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2226 ret = iwl_mvm_update_mu_groups(mvm, vif); 2227 if (ret) 2228 IWL_ERR(mvm, 2229 "failed to update VHT MU_MIMO groups\n"); 2230 } 2231 2232 iwl_mvm_recalc_multicast(mvm); 2233 iwl_mvm_configure_bcast_filter(mvm); 2234 2235 /* reset rssi values */ 2236 mvmvif->bf_data.ave_beacon_signal = 0; 2237 2238 iwl_mvm_bt_coex_vif_change(mvm); 2239 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2240 IEEE80211_SMPS_AUTOMATIC); 2241 if (fw_has_capa(&mvm->fw->ucode_capa, 2242 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2243 iwl_mvm_config_scan(mvm); 2244 } 2245 2246 if (changes & BSS_CHANGED_BEACON_INFO) { 2247 /* 2248 * We received a beacon from the associated AP so 2249 * remove the session protection. 2250 */ 2251 iwl_mvm_stop_session_protection(mvm, vif); 2252 2253 iwl_mvm_sf_update(mvm, vif, false); 2254 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2255 } 2256 2257 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2258 /* 2259 * Send power command on every beacon change, 2260 * because we may have not enabled beacon abort yet. 2261 */ 2262 BSS_CHANGED_BEACON_INFO)) { 2263 ret = iwl_mvm_power_update_mac(mvm); 2264 if (ret) 2265 IWL_ERR(mvm, "failed to update power mode\n"); 2266 } 2267 2268 if (changes & BSS_CHANGED_TXPOWER) { 2269 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2270 bss_conf->txpower); 2271 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2272 } 2273 2274 if (changes & BSS_CHANGED_CQM) { 2275 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2276 /* reset cqm events tracking */ 2277 mvmvif->bf_data.last_cqm_event = 0; 2278 if (mvmvif->bf_data.bf_enabled) { 2279 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2280 if (ret) 2281 IWL_ERR(mvm, 2282 "failed to update CQM thresholds\n"); 2283 } 2284 } 2285 2286 if (changes & BSS_CHANGED_ARP_FILTER) { 2287 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2288 iwl_mvm_configure_bcast_filter(mvm); 2289 } 2290 } 2291 2292 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2293 struct ieee80211_vif *vif) 2294 { 2295 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2297 int ret; 2298 2299 /* 2300 * iwl_mvm_mac_ctxt_add() might read directly from the device 2301 * (the system time), so make sure it is available. 2302 */ 2303 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2304 if (ret) 2305 return ret; 2306 2307 mutex_lock(&mvm->mutex); 2308 2309 /* Send the beacon template */ 2310 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2311 if (ret) 2312 goto out_unlock; 2313 2314 /* 2315 * Re-calculate the tsf id, as the master-slave relations depend on the 2316 * beacon interval, which was not known when the AP interface was added. 2317 */ 2318 if (vif->type == NL80211_IFTYPE_AP) 2319 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2320 2321 mvmvif->ap_assoc_sta_count = 0; 2322 2323 /* Add the mac context */ 2324 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2325 if (ret) 2326 goto out_unlock; 2327 2328 /* Perform the binding */ 2329 ret = iwl_mvm_binding_add_vif(mvm, vif); 2330 if (ret) 2331 goto out_remove; 2332 2333 /* 2334 * This is not very nice, but the simplest: 2335 * For older FWs adding the mcast sta before the bcast station may 2336 * cause assert 0x2b00. 2337 * This is fixed in later FW so make the order of removal depend on 2338 * the TLV 2339 */ 2340 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2341 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2342 if (ret) 2343 goto out_unbind; 2344 /* 2345 * Send the bcast station. At this stage the TBTT and DTIM time 2346 * events are added and applied to the scheduler 2347 */ 2348 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2349 if (ret) { 2350 iwl_mvm_rm_mcast_sta(mvm, vif); 2351 goto out_unbind; 2352 } 2353 } else { 2354 /* 2355 * Send the bcast station. At this stage the TBTT and DTIM time 2356 * events are added and applied to the scheduler 2357 */ 2358 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2359 if (ret) 2360 goto out_unbind; 2361 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2362 if (ret) { 2363 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2364 goto out_unbind; 2365 } 2366 } 2367 2368 /* must be set before quota calculations */ 2369 mvmvif->ap_ibss_active = true; 2370 2371 /* power updated needs to be done before quotas */ 2372 iwl_mvm_power_update_mac(mvm); 2373 2374 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2375 if (ret) 2376 goto out_quota_failed; 2377 2378 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2379 if (vif->p2p && mvm->p2p_device_vif) 2380 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2381 2382 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2383 2384 iwl_mvm_bt_coex_vif_change(mvm); 2385 2386 /* we don't support TDLS during DCM */ 2387 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2388 iwl_mvm_teardown_tdls_peers(mvm); 2389 2390 goto out_unlock; 2391 2392 out_quota_failed: 2393 iwl_mvm_power_update_mac(mvm); 2394 mvmvif->ap_ibss_active = false; 2395 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2396 iwl_mvm_rm_mcast_sta(mvm, vif); 2397 out_unbind: 2398 iwl_mvm_binding_remove_vif(mvm, vif); 2399 out_remove: 2400 iwl_mvm_mac_ctxt_remove(mvm, vif); 2401 out_unlock: 2402 mutex_unlock(&mvm->mutex); 2403 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2404 return ret; 2405 } 2406 2407 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2408 struct ieee80211_vif *vif) 2409 { 2410 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2411 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2412 2413 iwl_mvm_prepare_mac_removal(mvm, vif); 2414 2415 mutex_lock(&mvm->mutex); 2416 2417 /* Handle AP stop while in CSA */ 2418 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2419 iwl_mvm_remove_time_event(mvm, mvmvif, 2420 &mvmvif->time_event_data); 2421 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2422 mvmvif->csa_countdown = false; 2423 } 2424 2425 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2426 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2427 mvm->csa_tx_block_bcn_timeout = 0; 2428 } 2429 2430 mvmvif->ap_ibss_active = false; 2431 mvm->ap_last_beacon_gp2 = 0; 2432 2433 iwl_mvm_bt_coex_vif_change(mvm); 2434 2435 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2436 2437 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2438 if (vif->p2p && mvm->p2p_device_vif) 2439 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2440 2441 iwl_mvm_update_quotas(mvm, false, NULL); 2442 2443 /* 2444 * This is not very nice, but the simplest: 2445 * For older FWs removing the mcast sta before the bcast station may 2446 * cause assert 0x2b00. 2447 * This is fixed in later FW (which will stop beaconing when removing 2448 * bcast station). 2449 * So make the order of removal depend on the TLV 2450 */ 2451 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2452 iwl_mvm_rm_mcast_sta(mvm, vif); 2453 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2454 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2455 iwl_mvm_rm_mcast_sta(mvm, vif); 2456 iwl_mvm_binding_remove_vif(mvm, vif); 2457 2458 iwl_mvm_power_update_mac(mvm); 2459 2460 iwl_mvm_mac_ctxt_remove(mvm, vif); 2461 2462 mutex_unlock(&mvm->mutex); 2463 } 2464 2465 static void 2466 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2467 struct ieee80211_vif *vif, 2468 struct ieee80211_bss_conf *bss_conf, 2469 u32 changes) 2470 { 2471 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2472 2473 /* Changes will be applied when the AP/IBSS is started */ 2474 if (!mvmvif->ap_ibss_active) 2475 return; 2476 2477 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2478 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2479 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2480 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2481 2482 /* Need to send a new beacon template to the FW */ 2483 if (changes & BSS_CHANGED_BEACON && 2484 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2485 IWL_WARN(mvm, "Failed updating beacon data\n"); 2486 2487 if (changes & BSS_CHANGED_TXPOWER) { 2488 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2489 bss_conf->txpower); 2490 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2491 } 2492 } 2493 2494 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2495 struct ieee80211_vif *vif, 2496 struct ieee80211_bss_conf *bss_conf, 2497 u32 changes) 2498 { 2499 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2500 2501 /* 2502 * iwl_mvm_bss_info_changed_station() might call 2503 * iwl_mvm_protect_session(), which reads directly from 2504 * the device (the system time), so make sure it is available. 2505 */ 2506 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2507 return; 2508 2509 mutex_lock(&mvm->mutex); 2510 2511 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2512 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2513 2514 switch (vif->type) { 2515 case NL80211_IFTYPE_STATION: 2516 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2517 break; 2518 case NL80211_IFTYPE_AP: 2519 case NL80211_IFTYPE_ADHOC: 2520 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2521 break; 2522 case NL80211_IFTYPE_MONITOR: 2523 if (changes & BSS_CHANGED_MU_GROUPS) 2524 iwl_mvm_update_mu_groups(mvm, vif); 2525 break; 2526 default: 2527 /* shouldn't happen */ 2528 WARN_ON_ONCE(1); 2529 } 2530 2531 mutex_unlock(&mvm->mutex); 2532 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2533 } 2534 2535 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2536 struct ieee80211_vif *vif, 2537 struct ieee80211_scan_request *hw_req) 2538 { 2539 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2540 int ret; 2541 2542 if (hw_req->req.n_channels == 0 || 2543 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2544 return -EINVAL; 2545 2546 mutex_lock(&mvm->mutex); 2547 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2548 mutex_unlock(&mvm->mutex); 2549 2550 return ret; 2551 } 2552 2553 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2554 struct ieee80211_vif *vif) 2555 { 2556 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2557 2558 mutex_lock(&mvm->mutex); 2559 2560 /* Due to a race condition, it's possible that mac80211 asks 2561 * us to stop a hw_scan when it's already stopped. This can 2562 * happen, for instance, if we stopped the scan ourselves, 2563 * called ieee80211_scan_completed() and the userspace called 2564 * cancel scan scan before ieee80211_scan_work() could run. 2565 * To handle that, simply return if the scan is not running. 2566 */ 2567 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2568 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2569 2570 mutex_unlock(&mvm->mutex); 2571 } 2572 2573 static void 2574 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2575 struct ieee80211_sta *sta, u16 tids, 2576 int num_frames, 2577 enum ieee80211_frame_release_type reason, 2578 bool more_data) 2579 { 2580 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2581 2582 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2583 2584 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2585 tids, more_data, false); 2586 } 2587 2588 static void 2589 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2590 struct ieee80211_sta *sta, u16 tids, 2591 int num_frames, 2592 enum ieee80211_frame_release_type reason, 2593 bool more_data) 2594 { 2595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2596 2597 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2598 2599 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2600 tids, more_data, true); 2601 } 2602 2603 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2604 enum sta_notify_cmd cmd, 2605 struct ieee80211_sta *sta) 2606 { 2607 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2608 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2609 unsigned long txqs = 0, tids = 0; 2610 int tid; 2611 2612 /* 2613 * If we have TVQM then we get too high queue numbers - luckily 2614 * we really shouldn't get here with that because such hardware 2615 * should have firmware supporting buffer station offload. 2616 */ 2617 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2618 return; 2619 2620 spin_lock_bh(&mvmsta->lock); 2621 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2622 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2623 2624 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2625 continue; 2626 2627 __set_bit(tid_data->txq_id, &txqs); 2628 2629 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2630 continue; 2631 2632 __set_bit(tid, &tids); 2633 } 2634 2635 switch (cmd) { 2636 case STA_NOTIFY_SLEEP: 2637 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2638 ieee80211_sta_set_buffered(sta, tid, true); 2639 2640 if (txqs) 2641 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2642 /* 2643 * The fw updates the STA to be asleep. Tx packets on the Tx 2644 * queues to this station will not be transmitted. The fw will 2645 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2646 */ 2647 break; 2648 case STA_NOTIFY_AWAKE: 2649 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2650 break; 2651 2652 if (txqs) 2653 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2654 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2655 break; 2656 default: 2657 break; 2658 } 2659 spin_unlock_bh(&mvmsta->lock); 2660 } 2661 2662 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2663 struct ieee80211_vif *vif, 2664 enum sta_notify_cmd cmd, 2665 struct ieee80211_sta *sta) 2666 { 2667 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2668 } 2669 2670 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2671 { 2672 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2673 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2674 struct ieee80211_sta *sta; 2675 struct iwl_mvm_sta *mvmsta; 2676 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2677 2678 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2679 return; 2680 2681 rcu_read_lock(); 2682 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2683 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2684 rcu_read_unlock(); 2685 return; 2686 } 2687 2688 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2689 2690 if (!mvmsta->vif || 2691 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2692 rcu_read_unlock(); 2693 return; 2694 } 2695 2696 if (mvmsta->sleeping != sleeping) { 2697 mvmsta->sleeping = sleeping; 2698 __iwl_mvm_mac_sta_notify(mvm->hw, 2699 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2700 sta); 2701 ieee80211_sta_ps_transition(sta, sleeping); 2702 } 2703 2704 if (sleeping) { 2705 switch (notif->type) { 2706 case IWL_MVM_PM_EVENT_AWAKE: 2707 case IWL_MVM_PM_EVENT_ASLEEP: 2708 break; 2709 case IWL_MVM_PM_EVENT_UAPSD: 2710 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2711 break; 2712 case IWL_MVM_PM_EVENT_PS_POLL: 2713 ieee80211_sta_pspoll(sta); 2714 break; 2715 default: 2716 break; 2717 } 2718 } 2719 2720 rcu_read_unlock(); 2721 } 2722 2723 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2724 struct ieee80211_vif *vif, 2725 struct ieee80211_sta *sta) 2726 { 2727 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2728 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2729 2730 /* 2731 * This is called before mac80211 does RCU synchronisation, 2732 * so here we already invalidate our internal RCU-protected 2733 * station pointer. The rest of the code will thus no longer 2734 * be able to find the station this way, and we don't rely 2735 * on further RCU synchronisation after the sta_state() 2736 * callback deleted the station. 2737 */ 2738 mutex_lock(&mvm->mutex); 2739 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2740 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2741 ERR_PTR(-ENOENT)); 2742 2743 mutex_unlock(&mvm->mutex); 2744 } 2745 2746 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2747 const u8 *bssid) 2748 { 2749 int i; 2750 2751 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2752 struct iwl_mvm_tcm_mac *mdata; 2753 2754 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2755 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2756 mdata->opened_rx_ba_sessions = false; 2757 } 2758 2759 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2760 return; 2761 2762 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2763 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2764 return; 2765 } 2766 2767 if (!vif->p2p && 2768 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2769 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2770 return; 2771 } 2772 2773 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2774 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2775 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2776 return; 2777 } 2778 } 2779 2780 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2781 } 2782 2783 static void 2784 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2785 struct ieee80211_vif *vif, u8 *peer_addr, 2786 enum nl80211_tdls_operation action) 2787 { 2788 struct iwl_fw_dbg_trigger_tlv *trig; 2789 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2790 2791 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) 2792 return; 2793 2794 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); 2795 tdls_trig = (void *)trig->data; 2796 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 2797 ieee80211_vif_to_wdev(vif), trig)) 2798 return; 2799 2800 if (!(tdls_trig->action_bitmap & BIT(action))) 2801 return; 2802 2803 if (tdls_trig->peer_mode && 2804 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2805 return; 2806 2807 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2808 "TDLS event occurred, peer %pM, action %d", 2809 peer_addr, action); 2810 } 2811 2812 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2813 struct iwl_mvm_sta *mvm_sta) 2814 { 2815 struct iwl_mvm_tid_data *tid_data; 2816 struct sk_buff *skb; 2817 int i; 2818 2819 spin_lock_bh(&mvm_sta->lock); 2820 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2821 tid_data = &mvm_sta->tid_data[i]; 2822 2823 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) { 2824 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 2825 2826 /* 2827 * The first deferred frame should've stopped the MAC 2828 * queues, so we should never get a second deferred 2829 * frame for the RA/TID. 2830 */ 2831 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue)); 2832 ieee80211_free_txskb(mvm->hw, skb); 2833 } 2834 } 2835 spin_unlock_bh(&mvm_sta->lock); 2836 } 2837 2838 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2839 struct ieee80211_vif *vif, 2840 struct ieee80211_sta *sta, 2841 enum ieee80211_sta_state old_state, 2842 enum ieee80211_sta_state new_state) 2843 { 2844 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2845 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2846 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2847 int ret; 2848 2849 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2850 sta->addr, old_state, new_state); 2851 2852 /* this would be a mac80211 bug ... but don't crash */ 2853 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2854 return -EINVAL; 2855 2856 /* 2857 * If we are in a STA removal flow and in DQA mode: 2858 * 2859 * This is after the sync_rcu part, so the queues have already been 2860 * flushed. No more TXs on their way in mac80211's path, and no more in 2861 * the queues. 2862 * Also, we won't be getting any new TX frames for this station. 2863 * What we might have are deferred TX frames that need to be taken care 2864 * of. 2865 * 2866 * Drop any still-queued deferred-frame before removing the STA, and 2867 * make sure the worker is no longer handling frames for this STA. 2868 */ 2869 if (old_state == IEEE80211_STA_NONE && 2870 new_state == IEEE80211_STA_NOTEXIST) { 2871 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2872 flush_work(&mvm->add_stream_wk); 2873 2874 /* 2875 * No need to make sure deferred TX indication is off since the 2876 * worker will already remove it if it was on 2877 */ 2878 } 2879 2880 mutex_lock(&mvm->mutex); 2881 /* track whether or not the station is associated */ 2882 mvm_sta->sta_state = new_state; 2883 2884 if (old_state == IEEE80211_STA_NOTEXIST && 2885 new_state == IEEE80211_STA_NONE) { 2886 /* 2887 * Firmware bug - it'll crash if the beacon interval is less 2888 * than 16. We can't avoid connecting at all, so refuse the 2889 * station state change, this will cause mac80211 to abandon 2890 * attempts to connect to this AP, and eventually wpa_s will 2891 * blacklist the AP... 2892 */ 2893 if (vif->type == NL80211_IFTYPE_STATION && 2894 vif->bss_conf.beacon_int < 16) { 2895 IWL_ERR(mvm, 2896 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2897 sta->addr, vif->bss_conf.beacon_int); 2898 ret = -EINVAL; 2899 goto out_unlock; 2900 } 2901 2902 if (sta->tdls && 2903 (vif->p2p || 2904 iwl_mvm_tdls_sta_count(mvm, NULL) == 2905 IWL_MVM_TDLS_STA_COUNT || 2906 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2907 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2908 ret = -EBUSY; 2909 goto out_unlock; 2910 } 2911 2912 ret = iwl_mvm_add_sta(mvm, vif, sta); 2913 if (sta->tdls && ret == 0) { 2914 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2915 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2916 NL80211_TDLS_SETUP); 2917 } 2918 } else if (old_state == IEEE80211_STA_NONE && 2919 new_state == IEEE80211_STA_AUTH) { 2920 /* 2921 * EBS may be disabled due to previous failures reported by FW. 2922 * Reset EBS status here assuming environment has been changed. 2923 */ 2924 mvm->last_ebs_successful = true; 2925 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2926 ret = 0; 2927 } else if (old_state == IEEE80211_STA_AUTH && 2928 new_state == IEEE80211_STA_ASSOC) { 2929 if (vif->type == NL80211_IFTYPE_AP) { 2930 mvmvif->ap_assoc_sta_count++; 2931 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2932 } 2933 2934 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band); 2935 ret = iwl_mvm_update_sta(mvm, vif, sta); 2936 } else if (old_state == IEEE80211_STA_ASSOC && 2937 new_state == IEEE80211_STA_AUTHORIZED) { 2938 2939 /* we don't support TDLS during DCM */ 2940 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2941 iwl_mvm_teardown_tdls_peers(mvm); 2942 2943 if (sta->tdls) 2944 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2945 NL80211_TDLS_ENABLE_LINK); 2946 2947 /* enable beacon filtering */ 2948 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2949 2950 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band); 2951 2952 ret = 0; 2953 } else if (old_state == IEEE80211_STA_AUTHORIZED && 2954 new_state == IEEE80211_STA_ASSOC) { 2955 /* disable beacon filtering */ 2956 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 2957 ret = 0; 2958 } else if (old_state == IEEE80211_STA_ASSOC && 2959 new_state == IEEE80211_STA_AUTH) { 2960 if (vif->type == NL80211_IFTYPE_AP) { 2961 mvmvif->ap_assoc_sta_count--; 2962 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2963 } 2964 ret = 0; 2965 } else if (old_state == IEEE80211_STA_AUTH && 2966 new_state == IEEE80211_STA_NONE) { 2967 ret = 0; 2968 } else if (old_state == IEEE80211_STA_NONE && 2969 new_state == IEEE80211_STA_NOTEXIST) { 2970 ret = iwl_mvm_rm_sta(mvm, vif, sta); 2971 if (sta->tdls) { 2972 iwl_mvm_recalc_tdls_state(mvm, vif, false); 2973 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2974 NL80211_TDLS_DISABLE_LINK); 2975 } 2976 } else { 2977 ret = -EIO; 2978 } 2979 out_unlock: 2980 mutex_unlock(&mvm->mutex); 2981 2982 if (sta->tdls && ret == 0) { 2983 if (old_state == IEEE80211_STA_NOTEXIST && 2984 new_state == IEEE80211_STA_NONE) 2985 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2986 else if (old_state == IEEE80211_STA_NONE && 2987 new_state == IEEE80211_STA_NOTEXIST) 2988 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2989 } 2990 2991 return ret; 2992 } 2993 2994 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 2995 { 2996 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2997 2998 mvm->rts_threshold = value; 2999 3000 return 0; 3001 } 3002 3003 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3004 struct ieee80211_vif *vif, 3005 struct ieee80211_sta *sta, u32 changed) 3006 { 3007 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3008 3009 if (vif->type == NL80211_IFTYPE_STATION && 3010 changed & IEEE80211_RC_NSS_CHANGED) 3011 iwl_mvm_sf_update(mvm, vif, false); 3012 } 3013 3014 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3015 struct ieee80211_vif *vif, u16 ac, 3016 const struct ieee80211_tx_queue_params *params) 3017 { 3018 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3019 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3020 3021 mvmvif->queue_params[ac] = *params; 3022 3023 /* 3024 * No need to update right away, we'll get BSS_CHANGED_QOS 3025 * The exception is P2P_DEVICE interface which needs immediate update. 3026 */ 3027 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3028 int ret; 3029 3030 mutex_lock(&mvm->mutex); 3031 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3032 mutex_unlock(&mvm->mutex); 3033 return ret; 3034 } 3035 return 0; 3036 } 3037 3038 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3039 struct ieee80211_vif *vif, 3040 u16 req_duration) 3041 { 3042 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3043 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3044 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3045 3046 /* 3047 * iwl_mvm_protect_session() reads directly from the device 3048 * (the system time), so make sure it is available. 3049 */ 3050 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 3051 return; 3052 3053 if (req_duration > duration) 3054 duration = req_duration; 3055 3056 mutex_lock(&mvm->mutex); 3057 /* Try really hard to protect the session and hear a beacon */ 3058 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 3059 mutex_unlock(&mvm->mutex); 3060 3061 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 3062 } 3063 3064 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3065 struct ieee80211_vif *vif, 3066 struct cfg80211_sched_scan_request *req, 3067 struct ieee80211_scan_ies *ies) 3068 { 3069 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3070 3071 int ret; 3072 3073 mutex_lock(&mvm->mutex); 3074 3075 if (!vif->bss_conf.idle) { 3076 ret = -EBUSY; 3077 goto out; 3078 } 3079 3080 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3081 3082 out: 3083 mutex_unlock(&mvm->mutex); 3084 return ret; 3085 } 3086 3087 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3088 struct ieee80211_vif *vif) 3089 { 3090 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3091 int ret; 3092 3093 mutex_lock(&mvm->mutex); 3094 3095 /* Due to a race condition, it's possible that mac80211 asks 3096 * us to stop a sched_scan when it's already stopped. This 3097 * can happen, for instance, if we stopped the scan ourselves, 3098 * called ieee80211_sched_scan_stopped() and the userspace called 3099 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3100 * could run. To handle this, simply return if the scan is 3101 * not running. 3102 */ 3103 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3104 mutex_unlock(&mvm->mutex); 3105 return 0; 3106 } 3107 3108 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3109 mutex_unlock(&mvm->mutex); 3110 iwl_mvm_wait_for_async_handlers(mvm); 3111 3112 return ret; 3113 } 3114 3115 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3116 enum set_key_cmd cmd, 3117 struct ieee80211_vif *vif, 3118 struct ieee80211_sta *sta, 3119 struct ieee80211_key_conf *key) 3120 { 3121 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3122 struct iwl_mvm_sta *mvmsta; 3123 struct iwl_mvm_key_pn *ptk_pn; 3124 int keyidx = key->keyidx; 3125 int ret; 3126 u8 key_offset; 3127 3128 if (iwlwifi_mod_params.swcrypto) { 3129 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 3130 return -EOPNOTSUPP; 3131 } 3132 3133 switch (key->cipher) { 3134 case WLAN_CIPHER_SUITE_TKIP: 3135 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3136 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3137 break; 3138 case WLAN_CIPHER_SUITE_CCMP: 3139 case WLAN_CIPHER_SUITE_GCMP: 3140 case WLAN_CIPHER_SUITE_GCMP_256: 3141 if (!iwl_mvm_has_new_tx_api(mvm)) 3142 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3143 break; 3144 case WLAN_CIPHER_SUITE_AES_CMAC: 3145 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3146 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3147 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3148 break; 3149 case WLAN_CIPHER_SUITE_WEP40: 3150 case WLAN_CIPHER_SUITE_WEP104: 3151 /* For non-client mode, only use WEP keys for TX as we probably 3152 * don't have a station yet anyway and would then have to keep 3153 * track of the keys, linking them to each of the clients/peers 3154 * as they appear. For now, don't do that, for performance WEP 3155 * offload doesn't really matter much, but we need it for some 3156 * other offload features in client mode. 3157 */ 3158 if (vif->type != NL80211_IFTYPE_STATION) 3159 return 0; 3160 break; 3161 default: 3162 /* currently FW supports only one optional cipher scheme */ 3163 if (hw->n_cipher_schemes && 3164 hw->cipher_schemes->cipher == key->cipher) 3165 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3166 else 3167 return -EOPNOTSUPP; 3168 } 3169 3170 mutex_lock(&mvm->mutex); 3171 3172 switch (cmd) { 3173 case SET_KEY: 3174 if ((vif->type == NL80211_IFTYPE_ADHOC || 3175 vif->type == NL80211_IFTYPE_AP) && !sta) { 3176 /* 3177 * GTK on AP interface is a TX-only key, return 0; 3178 * on IBSS they're per-station and because we're lazy 3179 * we don't support them for RX, so do the same. 3180 * CMAC/GMAC in AP/IBSS modes must be done in software. 3181 */ 3182 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3183 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3184 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3185 ret = -EOPNOTSUPP; 3186 else 3187 ret = 0; 3188 3189 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3190 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3191 !iwl_mvm_has_new_tx_api(mvm)) { 3192 key->hw_key_idx = STA_KEY_IDX_INVALID; 3193 break; 3194 } 3195 } 3196 3197 /* During FW restart, in order to restore the state as it was, 3198 * don't try to reprogram keys we previously failed for. 3199 */ 3200 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3201 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3202 IWL_DEBUG_MAC80211(mvm, 3203 "skip invalid idx key programming during restart\n"); 3204 ret = 0; 3205 break; 3206 } 3207 3208 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3209 sta && iwl_mvm_has_new_rx_api(mvm) && 3210 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3211 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3212 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3213 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3214 struct ieee80211_key_seq seq; 3215 int tid, q; 3216 3217 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3218 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3219 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3220 mvm->trans->num_rx_queues), 3221 GFP_KERNEL); 3222 if (!ptk_pn) { 3223 ret = -ENOMEM; 3224 break; 3225 } 3226 3227 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3228 ieee80211_get_key_rx_seq(key, tid, &seq); 3229 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3230 memcpy(ptk_pn->q[q].pn[tid], 3231 seq.ccmp.pn, 3232 IEEE80211_CCMP_PN_LEN); 3233 } 3234 3235 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3236 } 3237 3238 /* in HW restart reuse the index, otherwise request a new one */ 3239 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3240 key_offset = key->hw_key_idx; 3241 else 3242 key_offset = STA_KEY_IDX_INVALID; 3243 3244 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3245 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3246 if (ret) { 3247 IWL_WARN(mvm, "set key failed\n"); 3248 /* 3249 * can't add key for RX, but we don't need it 3250 * in the device for TX so still return 0 3251 */ 3252 key->hw_key_idx = STA_KEY_IDX_INVALID; 3253 ret = 0; 3254 } 3255 3256 break; 3257 case DISABLE_KEY: 3258 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3259 ret = 0; 3260 break; 3261 } 3262 3263 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3264 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3265 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3266 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3267 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3268 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3269 ptk_pn = rcu_dereference_protected( 3270 mvmsta->ptk_pn[keyidx], 3271 lockdep_is_held(&mvm->mutex)); 3272 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3273 if (ptk_pn) 3274 kfree_rcu(ptk_pn, rcu_head); 3275 } 3276 3277 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3278 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3279 break; 3280 default: 3281 ret = -EINVAL; 3282 } 3283 3284 mutex_unlock(&mvm->mutex); 3285 return ret; 3286 } 3287 3288 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3289 struct ieee80211_vif *vif, 3290 struct ieee80211_key_conf *keyconf, 3291 struct ieee80211_sta *sta, 3292 u32 iv32, u16 *phase1key) 3293 { 3294 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3295 3296 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3297 return; 3298 3299 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3300 } 3301 3302 3303 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3304 struct iwl_rx_packet *pkt, void *data) 3305 { 3306 struct iwl_mvm *mvm = 3307 container_of(notif_wait, struct iwl_mvm, notif_wait); 3308 struct iwl_hs20_roc_res *resp; 3309 int resp_len = iwl_rx_packet_payload_len(pkt); 3310 struct iwl_mvm_time_event_data *te_data = data; 3311 3312 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3313 return true; 3314 3315 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3316 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3317 return true; 3318 } 3319 3320 resp = (void *)pkt->data; 3321 3322 IWL_DEBUG_TE(mvm, 3323 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 3324 resp->status, resp->event_unique_id); 3325 3326 te_data->uid = le32_to_cpu(resp->event_unique_id); 3327 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3328 te_data->uid); 3329 3330 spin_lock_bh(&mvm->time_event_lock); 3331 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3332 spin_unlock_bh(&mvm->time_event_lock); 3333 3334 return true; 3335 } 3336 3337 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3338 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3339 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3340 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3341 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3342 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3343 struct ieee80211_channel *channel, 3344 struct ieee80211_vif *vif, 3345 int duration) 3346 { 3347 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3348 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3349 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3350 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3351 struct iwl_notification_wait wait_time_event; 3352 u32 dtim_interval = vif->bss_conf.dtim_period * 3353 vif->bss_conf.beacon_int; 3354 u32 req_dur, delay; 3355 struct iwl_hs20_roc_req aux_roc_req = { 3356 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3357 .id_and_color = 3358 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3359 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3360 /* Set the channel info data */ 3361 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3362 PHY_BAND_24 : PHY_BAND_5, 3363 .channel_info.channel = channel->hw_value, 3364 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3365 /* Set the time and duration */ 3366 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3367 }; 3368 3369 delay = AUX_ROC_MIN_DELAY; 3370 req_dur = MSEC_TO_TU(duration); 3371 3372 /* 3373 * If we are associated we want the delay time to be at least one 3374 * dtim interval so that the FW can wait until after the DTIM and 3375 * then start the time event, this will potentially allow us to 3376 * remain off-channel for the max duration. 3377 * Since we want to use almost a whole dtim interval we would also 3378 * like the delay to be for 2-3 dtim intervals, in case there are 3379 * other time events with higher priority. 3380 */ 3381 if (vif->bss_conf.assoc) { 3382 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3383 /* We cannot remain off-channel longer than the DTIM interval */ 3384 if (dtim_interval <= req_dur) { 3385 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3386 if (req_dur <= AUX_ROC_MIN_DURATION) 3387 req_dur = dtim_interval - 3388 AUX_ROC_MIN_SAFETY_BUFFER; 3389 } 3390 } 3391 3392 aux_roc_req.duration = cpu_to_le32(req_dur); 3393 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3394 3395 IWL_DEBUG_TE(mvm, 3396 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3397 channel->hw_value, req_dur, duration, delay, 3398 dtim_interval); 3399 /* Set the node address */ 3400 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3401 3402 lockdep_assert_held(&mvm->mutex); 3403 3404 spin_lock_bh(&mvm->time_event_lock); 3405 3406 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3407 spin_unlock_bh(&mvm->time_event_lock); 3408 return -EIO; 3409 } 3410 3411 te_data->vif = vif; 3412 te_data->duration = duration; 3413 te_data->id = HOT_SPOT_CMD; 3414 3415 spin_unlock_bh(&mvm->time_event_lock); 3416 3417 /* 3418 * Use a notification wait, which really just processes the 3419 * command response and doesn't wait for anything, in order 3420 * to be able to process the response and get the UID inside 3421 * the RX path. Using CMD_WANT_SKB doesn't work because it 3422 * stores the buffer and then wakes up this thread, by which 3423 * time another notification (that the time event started) 3424 * might already be processed unsuccessfully. 3425 */ 3426 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3427 time_event_response, 3428 ARRAY_SIZE(time_event_response), 3429 iwl_mvm_rx_aux_roc, te_data); 3430 3431 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3432 &aux_roc_req); 3433 3434 if (res) { 3435 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3436 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3437 goto out_clear_te; 3438 } 3439 3440 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3441 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3442 /* should never fail */ 3443 WARN_ON_ONCE(res); 3444 3445 if (res) { 3446 out_clear_te: 3447 spin_lock_bh(&mvm->time_event_lock); 3448 iwl_mvm_te_clear_data(mvm, te_data); 3449 spin_unlock_bh(&mvm->time_event_lock); 3450 } 3451 3452 return res; 3453 } 3454 3455 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3456 struct ieee80211_vif *vif, 3457 struct ieee80211_channel *channel, 3458 int duration, 3459 enum ieee80211_roc_type type) 3460 { 3461 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3462 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3463 struct cfg80211_chan_def chandef; 3464 struct iwl_mvm_phy_ctxt *phy_ctxt; 3465 int ret, i; 3466 3467 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3468 duration, type); 3469 3470 /* 3471 * Flush the done work, just in case it's still pending, so that 3472 * the work it does can complete and we can accept new frames. 3473 */ 3474 flush_work(&mvm->roc_done_wk); 3475 3476 mutex_lock(&mvm->mutex); 3477 3478 switch (vif->type) { 3479 case NL80211_IFTYPE_STATION: 3480 if (fw_has_capa(&mvm->fw->ucode_capa, 3481 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3482 /* Use aux roc framework (HS20) */ 3483 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3484 vif, duration); 3485 goto out_unlock; 3486 } 3487 IWL_ERR(mvm, "hotspot not supported\n"); 3488 ret = -EINVAL; 3489 goto out_unlock; 3490 case NL80211_IFTYPE_P2P_DEVICE: 3491 /* handle below */ 3492 break; 3493 default: 3494 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3495 ret = -EINVAL; 3496 goto out_unlock; 3497 } 3498 3499 for (i = 0; i < NUM_PHY_CTX; i++) { 3500 phy_ctxt = &mvm->phy_ctxts[i]; 3501 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3502 continue; 3503 3504 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3505 /* 3506 * Unbind the P2P_DEVICE from the current PHY context, 3507 * and if the PHY context is not used remove it. 3508 */ 3509 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3510 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3511 goto out_unlock; 3512 3513 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3514 3515 /* Bind the P2P_DEVICE to the current PHY Context */ 3516 mvmvif->phy_ctxt = phy_ctxt; 3517 3518 ret = iwl_mvm_binding_add_vif(mvm, vif); 3519 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3520 goto out_unlock; 3521 3522 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3523 goto schedule_time_event; 3524 } 3525 } 3526 3527 /* Need to update the PHY context only if the ROC channel changed */ 3528 if (channel == mvmvif->phy_ctxt->channel) 3529 goto schedule_time_event; 3530 3531 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3532 3533 /* 3534 * Change the PHY context configuration as it is currently referenced 3535 * only by the P2P Device MAC 3536 */ 3537 if (mvmvif->phy_ctxt->ref == 1) { 3538 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3539 &chandef, 1, 1); 3540 if (ret) 3541 goto out_unlock; 3542 } else { 3543 /* 3544 * The PHY context is shared with other MACs. Need to remove the 3545 * P2P Device from the binding, allocate an new PHY context and 3546 * create a new binding 3547 */ 3548 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3549 if (!phy_ctxt) { 3550 ret = -ENOSPC; 3551 goto out_unlock; 3552 } 3553 3554 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3555 1, 1); 3556 if (ret) { 3557 IWL_ERR(mvm, "Failed to change PHY context\n"); 3558 goto out_unlock; 3559 } 3560 3561 /* Unbind the P2P_DEVICE from the current PHY context */ 3562 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3563 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3564 goto out_unlock; 3565 3566 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3567 3568 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3569 mvmvif->phy_ctxt = phy_ctxt; 3570 3571 ret = iwl_mvm_binding_add_vif(mvm, vif); 3572 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3573 goto out_unlock; 3574 3575 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3576 } 3577 3578 schedule_time_event: 3579 /* Schedule the time events */ 3580 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3581 3582 out_unlock: 3583 mutex_unlock(&mvm->mutex); 3584 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3585 return ret; 3586 } 3587 3588 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3589 { 3590 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3591 3592 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3593 3594 mutex_lock(&mvm->mutex); 3595 iwl_mvm_stop_roc(mvm); 3596 mutex_unlock(&mvm->mutex); 3597 3598 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3599 return 0; 3600 } 3601 3602 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3603 struct ieee80211_chanctx_conf *ctx) 3604 { 3605 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3606 struct iwl_mvm_phy_ctxt *phy_ctxt; 3607 int ret; 3608 3609 lockdep_assert_held(&mvm->mutex); 3610 3611 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3612 3613 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3614 if (!phy_ctxt) { 3615 ret = -ENOSPC; 3616 goto out; 3617 } 3618 3619 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3620 ctx->rx_chains_static, 3621 ctx->rx_chains_dynamic); 3622 if (ret) { 3623 IWL_ERR(mvm, "Failed to add PHY context\n"); 3624 goto out; 3625 } 3626 3627 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3628 *phy_ctxt_id = phy_ctxt->id; 3629 out: 3630 return ret; 3631 } 3632 3633 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3634 struct ieee80211_chanctx_conf *ctx) 3635 { 3636 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3637 int ret; 3638 3639 mutex_lock(&mvm->mutex); 3640 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3641 mutex_unlock(&mvm->mutex); 3642 3643 return ret; 3644 } 3645 3646 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3647 struct ieee80211_chanctx_conf *ctx) 3648 { 3649 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3650 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3651 3652 lockdep_assert_held(&mvm->mutex); 3653 3654 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3655 } 3656 3657 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3658 struct ieee80211_chanctx_conf *ctx) 3659 { 3660 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3661 3662 mutex_lock(&mvm->mutex); 3663 __iwl_mvm_remove_chanctx(mvm, ctx); 3664 mutex_unlock(&mvm->mutex); 3665 } 3666 3667 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3668 struct ieee80211_chanctx_conf *ctx, 3669 u32 changed) 3670 { 3671 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3672 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3673 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3674 3675 if (WARN_ONCE((phy_ctxt->ref > 1) && 3676 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3677 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3678 IEEE80211_CHANCTX_CHANGE_RADAR | 3679 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3680 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3681 phy_ctxt->ref, changed)) 3682 return; 3683 3684 mutex_lock(&mvm->mutex); 3685 3686 /* we are only changing the min_width, may be a noop */ 3687 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 3688 if (phy_ctxt->width == ctx->min_def.width) 3689 goto out_unlock; 3690 3691 /* we are just toggling between 20_NOHT and 20 */ 3692 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 3693 ctx->min_def.width <= NL80211_CHAN_WIDTH_20) 3694 goto out_unlock; 3695 } 3696 3697 iwl_mvm_bt_coex_vif_change(mvm); 3698 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3699 ctx->rx_chains_static, 3700 ctx->rx_chains_dynamic); 3701 3702 out_unlock: 3703 mutex_unlock(&mvm->mutex); 3704 } 3705 3706 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3707 struct ieee80211_vif *vif, 3708 struct ieee80211_chanctx_conf *ctx, 3709 bool switching_chanctx) 3710 { 3711 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3712 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3713 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3714 int ret; 3715 3716 lockdep_assert_held(&mvm->mutex); 3717 3718 mvmvif->phy_ctxt = phy_ctxt; 3719 3720 switch (vif->type) { 3721 case NL80211_IFTYPE_AP: 3722 /* only needed if we're switching chanctx (i.e. during CSA) */ 3723 if (switching_chanctx) { 3724 mvmvif->ap_ibss_active = true; 3725 break; 3726 } 3727 case NL80211_IFTYPE_ADHOC: 3728 /* 3729 * The AP binding flow is handled as part of the start_ap flow 3730 * (in bss_info_changed), similarly for IBSS. 3731 */ 3732 ret = 0; 3733 goto out; 3734 case NL80211_IFTYPE_STATION: 3735 mvmvif->csa_bcn_pending = false; 3736 break; 3737 case NL80211_IFTYPE_MONITOR: 3738 /* always disable PS when a monitor interface is active */ 3739 mvmvif->ps_disabled = true; 3740 break; 3741 default: 3742 ret = -EINVAL; 3743 goto out; 3744 } 3745 3746 ret = iwl_mvm_binding_add_vif(mvm, vif); 3747 if (ret) 3748 goto out; 3749 3750 /* 3751 * Power state must be updated before quotas, 3752 * otherwise fw will complain. 3753 */ 3754 iwl_mvm_power_update_mac(mvm); 3755 3756 /* Setting the quota at this stage is only required for monitor 3757 * interfaces. For the other types, the bss_info changed flow 3758 * will handle quota settings. 3759 */ 3760 if (vif->type == NL80211_IFTYPE_MONITOR) { 3761 mvmvif->monitor_active = true; 3762 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3763 if (ret) 3764 goto out_remove_binding; 3765 3766 ret = iwl_mvm_add_snif_sta(mvm, vif); 3767 if (ret) 3768 goto out_remove_binding; 3769 3770 } 3771 3772 /* Handle binding during CSA */ 3773 if (vif->type == NL80211_IFTYPE_AP) { 3774 iwl_mvm_update_quotas(mvm, false, NULL); 3775 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3776 } 3777 3778 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3779 u32 duration = 3 * vif->bss_conf.beacon_int; 3780 3781 /* iwl_mvm_protect_session() reads directly from the 3782 * device (the system time), so make sure it is 3783 * available. 3784 */ 3785 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3786 if (ret) 3787 goto out_remove_binding; 3788 3789 /* Protect the session to make sure we hear the first 3790 * beacon on the new channel. 3791 */ 3792 mvmvif->csa_bcn_pending = true; 3793 iwl_mvm_protect_session(mvm, vif, duration, duration, 3794 vif->bss_conf.beacon_int / 2, 3795 true); 3796 3797 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3798 3799 iwl_mvm_update_quotas(mvm, false, NULL); 3800 } 3801 3802 goto out; 3803 3804 out_remove_binding: 3805 iwl_mvm_binding_remove_vif(mvm, vif); 3806 iwl_mvm_power_update_mac(mvm); 3807 out: 3808 if (ret) 3809 mvmvif->phy_ctxt = NULL; 3810 return ret; 3811 } 3812 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3813 struct ieee80211_vif *vif, 3814 struct ieee80211_chanctx_conf *ctx) 3815 { 3816 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3817 int ret; 3818 3819 mutex_lock(&mvm->mutex); 3820 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3821 mutex_unlock(&mvm->mutex); 3822 3823 return ret; 3824 } 3825 3826 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3827 struct ieee80211_vif *vif, 3828 struct ieee80211_chanctx_conf *ctx, 3829 bool switching_chanctx) 3830 { 3831 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3832 struct ieee80211_vif *disabled_vif = NULL; 3833 3834 lockdep_assert_held(&mvm->mutex); 3835 3836 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3837 3838 switch (vif->type) { 3839 case NL80211_IFTYPE_ADHOC: 3840 goto out; 3841 case NL80211_IFTYPE_MONITOR: 3842 mvmvif->monitor_active = false; 3843 mvmvif->ps_disabled = false; 3844 iwl_mvm_rm_snif_sta(mvm, vif); 3845 break; 3846 case NL80211_IFTYPE_AP: 3847 /* This part is triggered only during CSA */ 3848 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3849 goto out; 3850 3851 mvmvif->csa_countdown = false; 3852 3853 /* Set CS bit on all the stations */ 3854 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3855 3856 /* Save blocked iface, the timeout is set on the next beacon */ 3857 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3858 3859 mvmvif->ap_ibss_active = false; 3860 break; 3861 case NL80211_IFTYPE_STATION: 3862 if (!switching_chanctx) 3863 break; 3864 3865 disabled_vif = vif; 3866 3867 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3868 break; 3869 default: 3870 break; 3871 } 3872 3873 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3874 iwl_mvm_binding_remove_vif(mvm, vif); 3875 3876 out: 3877 mvmvif->phy_ctxt = NULL; 3878 iwl_mvm_power_update_mac(mvm); 3879 } 3880 3881 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3882 struct ieee80211_vif *vif, 3883 struct ieee80211_chanctx_conf *ctx) 3884 { 3885 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3886 3887 mutex_lock(&mvm->mutex); 3888 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3889 mutex_unlock(&mvm->mutex); 3890 } 3891 3892 static int 3893 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3894 struct ieee80211_vif_chanctx_switch *vifs) 3895 { 3896 int ret; 3897 3898 mutex_lock(&mvm->mutex); 3899 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3900 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3901 3902 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3903 if (ret) { 3904 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3905 goto out_reassign; 3906 } 3907 3908 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3909 true); 3910 if (ret) { 3911 IWL_ERR(mvm, 3912 "failed to assign new_ctx during channel switch\n"); 3913 goto out_remove; 3914 } 3915 3916 /* we don't support TDLS during DCM - can be caused by channel switch */ 3917 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3918 iwl_mvm_teardown_tdls_peers(mvm); 3919 3920 goto out; 3921 3922 out_remove: 3923 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3924 3925 out_reassign: 3926 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3927 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3928 goto out_restart; 3929 } 3930 3931 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3932 true)) { 3933 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3934 goto out_restart; 3935 } 3936 3937 goto out; 3938 3939 out_restart: 3940 /* things keep failing, better restart the hw */ 3941 iwl_mvm_nic_restart(mvm, false); 3942 3943 out: 3944 mutex_unlock(&mvm->mutex); 3945 3946 return ret; 3947 } 3948 3949 static int 3950 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 3951 struct ieee80211_vif_chanctx_switch *vifs) 3952 { 3953 int ret; 3954 3955 mutex_lock(&mvm->mutex); 3956 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3957 3958 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3959 true); 3960 if (ret) { 3961 IWL_ERR(mvm, 3962 "failed to assign new_ctx during channel switch\n"); 3963 goto out_reassign; 3964 } 3965 3966 goto out; 3967 3968 out_reassign: 3969 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3970 true)) { 3971 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3972 goto out_restart; 3973 } 3974 3975 goto out; 3976 3977 out_restart: 3978 /* things keep failing, better restart the hw */ 3979 iwl_mvm_nic_restart(mvm, false); 3980 3981 out: 3982 mutex_unlock(&mvm->mutex); 3983 3984 return ret; 3985 } 3986 3987 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 3988 struct ieee80211_vif_chanctx_switch *vifs, 3989 int n_vifs, 3990 enum ieee80211_chanctx_switch_mode mode) 3991 { 3992 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3993 int ret; 3994 3995 /* we only support a single-vif right now */ 3996 if (n_vifs > 1) 3997 return -EOPNOTSUPP; 3998 3999 switch (mode) { 4000 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4001 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4002 break; 4003 case CHANCTX_SWMODE_REASSIGN_VIF: 4004 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4005 break; 4006 default: 4007 ret = -EOPNOTSUPP; 4008 break; 4009 } 4010 4011 return ret; 4012 } 4013 4014 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4015 { 4016 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4017 4018 return mvm->ibss_manager; 4019 } 4020 4021 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4022 struct ieee80211_sta *sta, 4023 bool set) 4024 { 4025 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4026 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4027 4028 if (!mvm_sta || !mvm_sta->vif) { 4029 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4030 return -EINVAL; 4031 } 4032 4033 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4034 } 4035 4036 #ifdef CONFIG_NL80211_TESTMODE 4037 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4038 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4039 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4040 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4041 }; 4042 4043 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4044 struct ieee80211_vif *vif, 4045 void *data, int len) 4046 { 4047 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4048 int err; 4049 u32 noa_duration; 4050 4051 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy, 4052 NULL); 4053 if (err) 4054 return err; 4055 4056 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4057 return -EINVAL; 4058 4059 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4060 case IWL_MVM_TM_CMD_SET_NOA: 4061 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4062 !vif->bss_conf.enable_beacon || 4063 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4064 return -EINVAL; 4065 4066 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4067 if (noa_duration >= vif->bss_conf.beacon_int) 4068 return -EINVAL; 4069 4070 mvm->noa_duration = noa_duration; 4071 mvm->noa_vif = vif; 4072 4073 return iwl_mvm_update_quotas(mvm, true, NULL); 4074 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4075 /* must be associated client vif - ignore authorized */ 4076 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4077 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4078 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4079 return -EINVAL; 4080 4081 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4082 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4083 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4084 } 4085 4086 return -EOPNOTSUPP; 4087 } 4088 4089 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4090 struct ieee80211_vif *vif, 4091 void *data, int len) 4092 { 4093 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4094 int err; 4095 4096 mutex_lock(&mvm->mutex); 4097 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4098 mutex_unlock(&mvm->mutex); 4099 4100 return err; 4101 } 4102 #endif 4103 4104 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4105 struct ieee80211_vif *vif, 4106 struct ieee80211_channel_switch *chsw) 4107 { 4108 /* By implementing this operation, we prevent mac80211 from 4109 * starting its own channel switch timer, so that we can call 4110 * ieee80211_chswitch_done() ourselves at the right time 4111 * (which is when the absence time event starts). 4112 */ 4113 4114 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4115 "dummy channel switch op\n"); 4116 } 4117 4118 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4119 struct ieee80211_vif *vif, 4120 struct ieee80211_channel_switch *chsw) 4121 { 4122 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4123 struct ieee80211_vif *csa_vif; 4124 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4125 u32 apply_time; 4126 int ret; 4127 4128 mutex_lock(&mvm->mutex); 4129 4130 mvmvif->csa_failed = false; 4131 4132 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4133 chsw->chandef.center_freq1); 4134 4135 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4136 ieee80211_vif_to_wdev(vif), 4137 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4138 4139 switch (vif->type) { 4140 case NL80211_IFTYPE_AP: 4141 csa_vif = 4142 rcu_dereference_protected(mvm->csa_vif, 4143 lockdep_is_held(&mvm->mutex)); 4144 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4145 "Another CSA is already in progress")) { 4146 ret = -EBUSY; 4147 goto out_unlock; 4148 } 4149 4150 /* we still didn't unblock tx. prevent new CS meanwhile */ 4151 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4152 lockdep_is_held(&mvm->mutex))) { 4153 ret = -EBUSY; 4154 goto out_unlock; 4155 } 4156 4157 rcu_assign_pointer(mvm->csa_vif, vif); 4158 4159 if (WARN_ONCE(mvmvif->csa_countdown, 4160 "Previous CSA countdown didn't complete")) { 4161 ret = -EBUSY; 4162 goto out_unlock; 4163 } 4164 4165 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4166 4167 break; 4168 case NL80211_IFTYPE_STATION: 4169 /* Schedule the time event to a bit before beacon 1, 4170 * to make sure we're in the new channel when the 4171 * GO/AP arrives. In case count <= 1 immediately schedule the 4172 * TE (this might result with some packet loss or connection 4173 * loss). 4174 */ 4175 if (chsw->count <= 1) 4176 apply_time = 0; 4177 else 4178 apply_time = chsw->device_timestamp + 4179 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4180 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4181 4182 if (chsw->block_tx) 4183 iwl_mvm_csa_client_absent(mvm, vif); 4184 4185 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4186 apply_time); 4187 if (mvmvif->bf_data.bf_enabled) { 4188 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4189 if (ret) 4190 goto out_unlock; 4191 } 4192 4193 break; 4194 default: 4195 break; 4196 } 4197 4198 mvmvif->ps_disabled = true; 4199 4200 ret = iwl_mvm_power_update_ps(mvm); 4201 if (ret) 4202 goto out_unlock; 4203 4204 /* we won't be on this channel any longer */ 4205 iwl_mvm_teardown_tdls_peers(mvm); 4206 4207 out_unlock: 4208 mutex_unlock(&mvm->mutex); 4209 4210 return ret; 4211 } 4212 4213 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 4214 struct ieee80211_vif *vif) 4215 { 4216 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4217 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4218 int ret; 4219 4220 mutex_lock(&mvm->mutex); 4221 4222 if (mvmvif->csa_failed) { 4223 mvmvif->csa_failed = false; 4224 ret = -EIO; 4225 goto out_unlock; 4226 } 4227 4228 if (vif->type == NL80211_IFTYPE_STATION) { 4229 struct iwl_mvm_sta *mvmsta; 4230 4231 mvmvif->csa_bcn_pending = false; 4232 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 4233 mvmvif->ap_sta_id); 4234 4235 if (WARN_ON(!mvmsta)) { 4236 ret = -EIO; 4237 goto out_unlock; 4238 } 4239 4240 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 4241 4242 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4243 4244 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4245 if (ret) 4246 goto out_unlock; 4247 4248 iwl_mvm_stop_session_protection(mvm, vif); 4249 } 4250 4251 mvmvif->ps_disabled = false; 4252 4253 ret = iwl_mvm_power_update_ps(mvm); 4254 4255 out_unlock: 4256 mutex_unlock(&mvm->mutex); 4257 4258 return ret; 4259 } 4260 4261 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4262 { 4263 int i; 4264 4265 if (!iwl_mvm_has_new_tx_api(mvm)) { 4266 if (drop) { 4267 mutex_lock(&mvm->mutex); 4268 iwl_mvm_flush_tx_path(mvm, 4269 iwl_mvm_flushable_queues(mvm) & queues, 0); 4270 mutex_unlock(&mvm->mutex); 4271 } else { 4272 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4273 } 4274 return; 4275 } 4276 4277 mutex_lock(&mvm->mutex); 4278 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4279 struct ieee80211_sta *sta; 4280 4281 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4282 lockdep_is_held(&mvm->mutex)); 4283 if (IS_ERR_OR_NULL(sta)) 4284 continue; 4285 4286 if (drop) 4287 iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0); 4288 else 4289 iwl_mvm_wait_sta_queues_empty(mvm, 4290 iwl_mvm_sta_from_mac80211(sta)); 4291 } 4292 mutex_unlock(&mvm->mutex); 4293 } 4294 4295 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4296 struct ieee80211_vif *vif, u32 queues, bool drop) 4297 { 4298 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4299 struct iwl_mvm_vif *mvmvif; 4300 struct iwl_mvm_sta *mvmsta; 4301 struct ieee80211_sta *sta; 4302 int i; 4303 u32 msk = 0; 4304 4305 if (!vif) { 4306 iwl_mvm_flush_no_vif(mvm, queues, drop); 4307 return; 4308 } 4309 4310 if (vif->type != NL80211_IFTYPE_STATION) 4311 return; 4312 4313 /* Make sure we're done with the deferred traffic before flushing */ 4314 flush_work(&mvm->add_stream_wk); 4315 4316 mutex_lock(&mvm->mutex); 4317 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4318 4319 /* flush the AP-station and all TDLS peers */ 4320 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4321 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4322 lockdep_is_held(&mvm->mutex)); 4323 if (IS_ERR_OR_NULL(sta)) 4324 continue; 4325 4326 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4327 if (mvmsta->vif != vif) 4328 continue; 4329 4330 /* make sure only TDLS peers or the AP are flushed */ 4331 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4332 4333 if (drop) { 4334 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4335 IWL_ERR(mvm, "flush request fail\n"); 4336 } else { 4337 msk |= mvmsta->tfd_queue_msk; 4338 if (iwl_mvm_has_new_tx_api(mvm)) 4339 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4340 } 4341 } 4342 4343 mutex_unlock(&mvm->mutex); 4344 4345 /* this can take a while, and we may need/want other operations 4346 * to succeed while doing this, so do it without the mutex held 4347 */ 4348 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4349 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4350 } 4351 4352 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4353 struct survey_info *survey) 4354 { 4355 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4356 int ret; 4357 4358 memset(survey, 0, sizeof(*survey)); 4359 4360 /* only support global statistics right now */ 4361 if (idx != 0) 4362 return -ENOENT; 4363 4364 if (!fw_has_capa(&mvm->fw->ucode_capa, 4365 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4366 return -ENOENT; 4367 4368 mutex_lock(&mvm->mutex); 4369 4370 if (iwl_mvm_firmware_running(mvm)) { 4371 ret = iwl_mvm_request_statistics(mvm, false); 4372 if (ret) 4373 goto out; 4374 } 4375 4376 survey->filled = SURVEY_INFO_TIME | 4377 SURVEY_INFO_TIME_RX | 4378 SURVEY_INFO_TIME_TX | 4379 SURVEY_INFO_TIME_SCAN; 4380 survey->time = mvm->accu_radio_stats.on_time_rf + 4381 mvm->radio_stats.on_time_rf; 4382 do_div(survey->time, USEC_PER_MSEC); 4383 4384 survey->time_rx = mvm->accu_radio_stats.rx_time + 4385 mvm->radio_stats.rx_time; 4386 do_div(survey->time_rx, USEC_PER_MSEC); 4387 4388 survey->time_tx = mvm->accu_radio_stats.tx_time + 4389 mvm->radio_stats.tx_time; 4390 do_div(survey->time_tx, USEC_PER_MSEC); 4391 4392 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4393 mvm->radio_stats.on_time_scan; 4394 do_div(survey->time_scan, USEC_PER_MSEC); 4395 4396 ret = 0; 4397 out: 4398 mutex_unlock(&mvm->mutex); 4399 return ret; 4400 } 4401 4402 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4403 struct ieee80211_vif *vif, 4404 struct ieee80211_sta *sta, 4405 struct station_info *sinfo) 4406 { 4407 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4408 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4409 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4410 4411 if (mvmsta->avg_energy) { 4412 sinfo->signal_avg = mvmsta->avg_energy; 4413 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4414 } 4415 4416 if (!fw_has_capa(&mvm->fw->ucode_capa, 4417 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4418 return; 4419 4420 /* if beacon filtering isn't on mac80211 does it anyway */ 4421 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4422 return; 4423 4424 if (!vif->bss_conf.assoc) 4425 return; 4426 4427 mutex_lock(&mvm->mutex); 4428 4429 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4430 goto unlock; 4431 4432 if (iwl_mvm_request_statistics(mvm, false)) 4433 goto unlock; 4434 4435 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4436 mvmvif->beacon_stats.accu_num_beacons; 4437 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4438 if (mvmvif->beacon_stats.avg_signal) { 4439 /* firmware only reports a value after RXing a few beacons */ 4440 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4441 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4442 } 4443 unlock: 4444 mutex_unlock(&mvm->mutex); 4445 } 4446 4447 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4448 struct ieee80211_vif *vif, 4449 const struct ieee80211_event *event) 4450 { 4451 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4452 do { \ 4453 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4454 break; \ 4455 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4456 } while (0) 4457 4458 struct iwl_fw_dbg_trigger_tlv *trig; 4459 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4460 4461 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 4462 return; 4463 4464 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 4465 trig_mlme = (void *)trig->data; 4466 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4467 ieee80211_vif_to_wdev(vif), trig)) 4468 return; 4469 4470 if (event->u.mlme.data == ASSOC_EVENT) { 4471 if (event->u.mlme.status == MLME_DENIED) 4472 CHECK_MLME_TRIGGER(stop_assoc_denied, 4473 "DENIED ASSOC: reason %d", 4474 event->u.mlme.reason); 4475 else if (event->u.mlme.status == MLME_TIMEOUT) 4476 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4477 "ASSOC TIMEOUT"); 4478 } else if (event->u.mlme.data == AUTH_EVENT) { 4479 if (event->u.mlme.status == MLME_DENIED) 4480 CHECK_MLME_TRIGGER(stop_auth_denied, 4481 "DENIED AUTH: reason %d", 4482 event->u.mlme.reason); 4483 else if (event->u.mlme.status == MLME_TIMEOUT) 4484 CHECK_MLME_TRIGGER(stop_auth_timeout, 4485 "AUTH TIMEOUT"); 4486 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4487 CHECK_MLME_TRIGGER(stop_rx_deauth, 4488 "DEAUTH RX %d", event->u.mlme.reason); 4489 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4490 CHECK_MLME_TRIGGER(stop_tx_deauth, 4491 "DEAUTH TX %d", event->u.mlme.reason); 4492 } 4493 #undef CHECK_MLME_TRIGGER 4494 } 4495 4496 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4497 struct ieee80211_vif *vif, 4498 const struct ieee80211_event *event) 4499 { 4500 struct iwl_fw_dbg_trigger_tlv *trig; 4501 struct iwl_fw_dbg_trigger_ba *ba_trig; 4502 4503 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4504 return; 4505 4506 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4507 ba_trig = (void *)trig->data; 4508 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4509 ieee80211_vif_to_wdev(vif), trig)) 4510 return; 4511 4512 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4513 return; 4514 4515 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4516 "BAR received from %pM, tid %d, ssn %d", 4517 event->u.ba.sta->addr, event->u.ba.tid, 4518 event->u.ba.ssn); 4519 } 4520 4521 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4522 struct ieee80211_vif *vif, 4523 const struct ieee80211_event *event) 4524 { 4525 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4526 4527 switch (event->type) { 4528 case MLME_EVENT: 4529 iwl_mvm_event_mlme_callback(mvm, vif, event); 4530 break; 4531 case BAR_RX_EVENT: 4532 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4533 break; 4534 case BA_FRAME_TIMEOUT: 4535 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 4536 event->u.ba.tid); 4537 break; 4538 default: 4539 break; 4540 } 4541 } 4542 4543 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4544 struct iwl_mvm_internal_rxq_notif *notif, 4545 u32 size) 4546 { 4547 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4548 int ret; 4549 4550 lockdep_assert_held(&mvm->mutex); 4551 4552 if (!iwl_mvm_has_new_rx_api(mvm)) 4553 return; 4554 4555 notif->cookie = mvm->queue_sync_cookie; 4556 4557 if (notif->sync) 4558 atomic_set(&mvm->queue_sync_counter, 4559 mvm->trans->num_rx_queues); 4560 4561 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4562 if (ret) { 4563 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4564 goto out; 4565 } 4566 4567 if (notif->sync) { 4568 ret = wait_event_timeout(mvm->rx_sync_waitq, 4569 atomic_read(&mvm->queue_sync_counter) == 0 || 4570 iwl_mvm_is_radio_killed(mvm), 4571 HZ); 4572 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 4573 } 4574 4575 out: 4576 atomic_set(&mvm->queue_sync_counter, 0); 4577 mvm->queue_sync_cookie++; 4578 } 4579 4580 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4581 { 4582 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4583 struct iwl_mvm_internal_rxq_notif data = { 4584 .type = IWL_MVM_RXQ_EMPTY, 4585 .sync = 1, 4586 }; 4587 4588 mutex_lock(&mvm->mutex); 4589 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4590 mutex_unlock(&mvm->mutex); 4591 } 4592 4593 const struct ieee80211_ops iwl_mvm_hw_ops = { 4594 .tx = iwl_mvm_mac_tx, 4595 .ampdu_action = iwl_mvm_mac_ampdu_action, 4596 .start = iwl_mvm_mac_start, 4597 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4598 .stop = iwl_mvm_mac_stop, 4599 .add_interface = iwl_mvm_mac_add_interface, 4600 .remove_interface = iwl_mvm_mac_remove_interface, 4601 .config = iwl_mvm_mac_config, 4602 .prepare_multicast = iwl_mvm_prepare_multicast, 4603 .configure_filter = iwl_mvm_configure_filter, 4604 .config_iface_filter = iwl_mvm_config_iface_filter, 4605 .bss_info_changed = iwl_mvm_bss_info_changed, 4606 .hw_scan = iwl_mvm_mac_hw_scan, 4607 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4608 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4609 .sta_state = iwl_mvm_mac_sta_state, 4610 .sta_notify = iwl_mvm_mac_sta_notify, 4611 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4612 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4613 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4614 .sta_rc_update = iwl_mvm_sta_rc_update, 4615 .conf_tx = iwl_mvm_mac_conf_tx, 4616 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4617 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4618 .flush = iwl_mvm_mac_flush, 4619 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4620 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4621 .set_key = iwl_mvm_mac_set_key, 4622 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4623 .remain_on_channel = iwl_mvm_roc, 4624 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4625 .add_chanctx = iwl_mvm_add_chanctx, 4626 .remove_chanctx = iwl_mvm_remove_chanctx, 4627 .change_chanctx = iwl_mvm_change_chanctx, 4628 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4629 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4630 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4631 4632 .start_ap = iwl_mvm_start_ap_ibss, 4633 .stop_ap = iwl_mvm_stop_ap_ibss, 4634 .join_ibss = iwl_mvm_start_ap_ibss, 4635 .leave_ibss = iwl_mvm_stop_ap_ibss, 4636 4637 .tx_last_beacon = iwl_mvm_tx_last_beacon, 4638 4639 .set_tim = iwl_mvm_set_tim, 4640 4641 .channel_switch = iwl_mvm_channel_switch, 4642 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4643 .post_channel_switch = iwl_mvm_post_channel_switch, 4644 4645 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4646 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4647 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4648 4649 .event_callback = iwl_mvm_mac_event_callback, 4650 4651 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4652 4653 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4654 4655 #ifdef CONFIG_PM_SLEEP 4656 /* look at d3.c */ 4657 .suspend = iwl_mvm_suspend, 4658 .resume = iwl_mvm_resume, 4659 .set_wakeup = iwl_mvm_set_wakeup, 4660 .set_rekey_data = iwl_mvm_set_rekey_data, 4661 #if IS_ENABLED(CONFIG_IPV6) 4662 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4663 #endif 4664 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4665 #endif 4666 .get_survey = iwl_mvm_mac_get_survey, 4667 .sta_statistics = iwl_mvm_mac_sta_statistics, 4668 #ifdef CONFIG_IWLWIFI_DEBUGFS 4669 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 4670 #endif 4671 }; 4672