1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 #include <linux/kernel.h> 65 #include <linux/slab.h> 66 #include <linux/skbuff.h> 67 #include <linux/netdevice.h> 68 #include <linux/etherdevice.h> 69 #include <linux/ip.h> 70 #include <linux/if_arp.h> 71 #include <linux/time.h> 72 #include <net/mac80211.h> 73 #include <net/ieee80211_radiotap.h> 74 #include <net/tcp.h> 75 76 #include "iwl-op-mode.h" 77 #include "iwl-io.h" 78 #include "mvm.h" 79 #include "sta.h" 80 #include "time-event.h" 81 #include "iwl-eeprom-parse.h" 82 #include "iwl-phy-db.h" 83 #include "testmode.h" 84 #include "fw/error-dump.h" 85 #include "iwl-prph.h" 86 #include "iwl-nvm-parse.h" 87 88 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 89 { 90 .max = 1, 91 .types = BIT(NL80211_IFTYPE_STATION), 92 }, 93 { 94 .max = 1, 95 .types = BIT(NL80211_IFTYPE_AP) | 96 BIT(NL80211_IFTYPE_P2P_CLIENT) | 97 BIT(NL80211_IFTYPE_P2P_GO), 98 }, 99 { 100 .max = 1, 101 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 102 }, 103 }; 104 105 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 106 { 107 .num_different_channels = 2, 108 .max_interfaces = 3, 109 .limits = iwl_mvm_limits, 110 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 111 }, 112 }; 113 114 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 115 /* 116 * Use the reserved field to indicate magic values. 117 * these values will only be used internally by the driver, 118 * and won't make it to the fw (reserved will be 0). 119 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 120 * be the vif's ip address. in case there is not a single 121 * ip address (0, or more than 1), this attribute will 122 * be skipped. 123 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 124 * the LSB bytes of the vif's mac address 125 */ 126 enum { 127 BC_FILTER_MAGIC_NONE = 0, 128 BC_FILTER_MAGIC_IP, 129 BC_FILTER_MAGIC_MAC, 130 }; 131 132 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 133 { 134 /* arp */ 135 .discard = 0, 136 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 137 .attrs = { 138 { 139 /* frame type - arp, hw type - ethernet */ 140 .offset_type = 141 BCAST_FILTER_OFFSET_PAYLOAD_START, 142 .offset = sizeof(rfc1042_header), 143 .val = cpu_to_be32(0x08060001), 144 .mask = cpu_to_be32(0xffffffff), 145 }, 146 { 147 /* arp dest ip */ 148 .offset_type = 149 BCAST_FILTER_OFFSET_PAYLOAD_START, 150 .offset = sizeof(rfc1042_header) + 2 + 151 sizeof(struct arphdr) + 152 ETH_ALEN + sizeof(__be32) + 153 ETH_ALEN, 154 .mask = cpu_to_be32(0xffffffff), 155 /* mark it as special field */ 156 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 157 }, 158 }, 159 }, 160 { 161 /* dhcp offer bcast */ 162 .discard = 0, 163 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 164 .attrs = { 165 { 166 /* udp dest port - 68 (bootp client)*/ 167 .offset_type = BCAST_FILTER_OFFSET_IP_END, 168 .offset = offsetof(struct udphdr, dest), 169 .val = cpu_to_be32(0x00440000), 170 .mask = cpu_to_be32(0xffff0000), 171 }, 172 { 173 /* dhcp - lsb bytes of client hw address */ 174 .offset_type = BCAST_FILTER_OFFSET_IP_END, 175 .offset = 38, 176 .mask = cpu_to_be32(0xffffffff), 177 /* mark it as special field */ 178 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 179 }, 180 }, 181 }, 182 /* last filter must be empty */ 183 {}, 184 }; 185 #endif 186 187 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 188 { 189 if (!iwl_mvm_is_d0i3_supported(mvm)) 190 return; 191 192 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); 193 spin_lock_bh(&mvm->refs_lock); 194 mvm->refs[ref_type]++; 195 spin_unlock_bh(&mvm->refs_lock); 196 iwl_trans_ref(mvm->trans); 197 } 198 199 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 200 { 201 if (!iwl_mvm_is_d0i3_supported(mvm)) 202 return; 203 204 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); 205 spin_lock_bh(&mvm->refs_lock); 206 if (WARN_ON(!mvm->refs[ref_type])) { 207 spin_unlock_bh(&mvm->refs_lock); 208 return; 209 } 210 mvm->refs[ref_type]--; 211 spin_unlock_bh(&mvm->refs_lock); 212 iwl_trans_unref(mvm->trans); 213 } 214 215 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, 216 enum iwl_mvm_ref_type except_ref) 217 { 218 int i, j; 219 220 if (!iwl_mvm_is_d0i3_supported(mvm)) 221 return; 222 223 spin_lock_bh(&mvm->refs_lock); 224 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 225 if (except_ref == i || !mvm->refs[i]) 226 continue; 227 228 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", 229 i, mvm->refs[i]); 230 for (j = 0; j < mvm->refs[i]; j++) 231 iwl_trans_unref(mvm->trans); 232 mvm->refs[i] = 0; 233 } 234 spin_unlock_bh(&mvm->refs_lock); 235 } 236 237 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) 238 { 239 int i; 240 bool taken = false; 241 242 if (!iwl_mvm_is_d0i3_supported(mvm)) 243 return true; 244 245 spin_lock_bh(&mvm->refs_lock); 246 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 247 if (mvm->refs[i]) { 248 taken = true; 249 break; 250 } 251 } 252 spin_unlock_bh(&mvm->refs_lock); 253 254 return taken; 255 } 256 257 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 258 { 259 iwl_mvm_ref(mvm, ref_type); 260 261 if (!wait_event_timeout(mvm->d0i3_exit_waitq, 262 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), 263 HZ)) { 264 WARN_ON_ONCE(1); 265 iwl_mvm_unref(mvm, ref_type); 266 return -EIO; 267 } 268 269 return 0; 270 } 271 272 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 273 { 274 int i; 275 276 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 277 for (i = 0; i < NUM_PHY_CTX; i++) { 278 mvm->phy_ctxts[i].id = i; 279 mvm->phy_ctxts[i].ref = 0; 280 } 281 } 282 283 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 284 const char *alpha2, 285 enum iwl_mcc_source src_id, 286 bool *changed) 287 { 288 struct ieee80211_regdomain *regd = NULL; 289 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 290 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 291 struct iwl_mcc_update_resp *resp; 292 293 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 294 295 lockdep_assert_held(&mvm->mutex); 296 297 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 298 if (IS_ERR_OR_NULL(resp)) { 299 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 300 PTR_ERR_OR_ZERO(resp)); 301 goto out; 302 } 303 304 if (changed) { 305 u32 status = le32_to_cpu(resp->status); 306 307 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 308 status == MCC_RESP_ILLEGAL); 309 } 310 311 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 312 __le32_to_cpu(resp->n_channels), 313 resp->channels, 314 __le16_to_cpu(resp->mcc), 315 __le16_to_cpu(resp->geo_info)); 316 /* Store the return source id */ 317 src_id = resp->source_id; 318 kfree(resp); 319 if (IS_ERR_OR_NULL(regd)) { 320 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 321 PTR_ERR_OR_ZERO(regd)); 322 goto out; 323 } 324 325 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 326 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 327 mvm->lar_regdom_set = true; 328 mvm->mcc_src = src_id; 329 330 out: 331 return regd; 332 } 333 334 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 335 { 336 bool changed; 337 struct ieee80211_regdomain *regd; 338 339 if (!iwl_mvm_is_lar_supported(mvm)) 340 return; 341 342 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 343 if (!IS_ERR_OR_NULL(regd)) { 344 /* only update the regulatory core if changed */ 345 if (changed) 346 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 347 348 kfree(regd); 349 } 350 } 351 352 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 353 bool *changed) 354 { 355 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 356 iwl_mvm_is_wifi_mcc_supported(mvm) ? 357 MCC_SOURCE_GET_CURRENT : 358 MCC_SOURCE_OLD_FW, changed); 359 } 360 361 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 362 { 363 enum iwl_mcc_source used_src; 364 struct ieee80211_regdomain *regd; 365 int ret; 366 bool changed; 367 const struct ieee80211_regdomain *r = 368 rtnl_dereference(mvm->hw->wiphy->regd); 369 370 if (!r) 371 return -ENOENT; 372 373 /* save the last source in case we overwrite it below */ 374 used_src = mvm->mcc_src; 375 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 376 /* Notify the firmware we support wifi location updates */ 377 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 378 if (!IS_ERR_OR_NULL(regd)) 379 kfree(regd); 380 } 381 382 /* Now set our last stored MCC and source */ 383 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 384 &changed); 385 if (IS_ERR_OR_NULL(regd)) 386 return -EIO; 387 388 /* update cfg80211 if the regdomain was changed */ 389 if (changed) 390 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 391 else 392 ret = 0; 393 394 kfree(regd); 395 return ret; 396 } 397 398 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 399 { 400 struct ieee80211_hw *hw = mvm->hw; 401 int num_mac, ret, i; 402 static const u32 mvm_ciphers[] = { 403 WLAN_CIPHER_SUITE_WEP40, 404 WLAN_CIPHER_SUITE_WEP104, 405 WLAN_CIPHER_SUITE_TKIP, 406 WLAN_CIPHER_SUITE_CCMP, 407 }; 408 409 /* Tell mac80211 our characteristics */ 410 ieee80211_hw_set(hw, SIGNAL_DBM); 411 ieee80211_hw_set(hw, SPECTRUM_MGMT); 412 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 413 ieee80211_hw_set(hw, QUEUE_CONTROL); 414 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 415 ieee80211_hw_set(hw, SUPPORTS_PS); 416 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 417 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 418 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 419 ieee80211_hw_set(hw, CONNECTION_MONITOR); 420 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 421 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 422 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 423 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 424 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 425 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 426 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 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; 562 563 /* Extract MAC address */ 564 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 565 hw->wiphy->addresses = mvm->addresses; 566 hw->wiphy->n_addresses = 1; 567 568 /* Extract additional MAC addresses if available */ 569 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 570 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 571 572 for (i = 1; i < num_mac; i++) { 573 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 574 ETH_ALEN); 575 mvm->addresses[i].addr[5]++; 576 hw->wiphy->n_addresses++; 577 } 578 579 iwl_mvm_reset_phy_ctxts(mvm); 580 581 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 582 583 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 584 585 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 586 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 587 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 588 589 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 590 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 591 else 592 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 593 594 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 595 hw->wiphy->bands[NL80211_BAND_2GHZ] = 596 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 597 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 598 hw->wiphy->bands[NL80211_BAND_5GHZ] = 599 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 600 601 if (fw_has_capa(&mvm->fw->ucode_capa, 602 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 603 fw_has_api(&mvm->fw->ucode_capa, 604 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 605 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 606 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 607 } 608 609 hw->wiphy->hw_version = mvm->trans->hw_id; 610 611 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 612 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 613 else 614 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 615 616 hw->wiphy->max_sched_scan_reqs = 1; 617 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 618 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 619 /* we create the 802.11 header and zero length SSID IE. */ 620 hw->wiphy->max_sched_scan_ie_len = 621 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 622 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 623 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 624 625 /* 626 * the firmware uses u8 for num of iterations, but 0xff is saved for 627 * infinite loop, so the maximum number of iterations is actually 254. 628 */ 629 hw->wiphy->max_sched_scan_plan_iterations = 254; 630 631 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 632 NL80211_FEATURE_LOW_PRIORITY_SCAN | 633 NL80211_FEATURE_P2P_GO_OPPPS | 634 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 635 NL80211_FEATURE_DYNAMIC_SMPS | 636 NL80211_FEATURE_STATIC_SMPS | 637 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 638 639 if (fw_has_capa(&mvm->fw->ucode_capa, 640 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 641 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 642 if (fw_has_capa(&mvm->fw->ucode_capa, 643 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 644 hw->wiphy->features |= NL80211_FEATURE_QUIET; 645 646 if (fw_has_capa(&mvm->fw->ucode_capa, 647 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 648 hw->wiphy->features |= 649 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 650 651 if (fw_has_capa(&mvm->fw->ucode_capa, 652 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 653 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 654 655 if (fw_has_api(&mvm->fw->ucode_capa, 656 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 657 wiphy_ext_feature_set(hw->wiphy, 658 NL80211_EXT_FEATURE_SCAN_START_TIME); 659 wiphy_ext_feature_set(hw->wiphy, 660 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 661 wiphy_ext_feature_set(hw->wiphy, 662 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 663 } 664 665 if (iwl_mvm_is_oce_supported(mvm)) { 666 wiphy_ext_feature_set(hw->wiphy, 667 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 668 wiphy_ext_feature_set(hw->wiphy, 669 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 670 wiphy_ext_feature_set(hw->wiphy, 671 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 672 wiphy_ext_feature_set(hw->wiphy, 673 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 674 } 675 676 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 677 678 #ifdef CONFIG_PM_SLEEP 679 if (iwl_mvm_is_d0i3_supported(mvm) && 680 device_can_wakeup(mvm->trans->dev)) { 681 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 682 hw->wiphy->wowlan = &mvm->wowlan; 683 } 684 685 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec && 686 mvm->trans->ops->d3_suspend && 687 mvm->trans->ops->d3_resume && 688 device_can_wakeup(mvm->trans->dev)) { 689 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 690 WIPHY_WOWLAN_DISCONNECT | 691 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 692 WIPHY_WOWLAN_RFKILL_RELEASE | 693 WIPHY_WOWLAN_NET_DETECT; 694 if (!iwlwifi_mod_params.swcrypto) 695 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 696 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 697 WIPHY_WOWLAN_4WAY_HANDSHAKE; 698 699 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 700 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 701 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 702 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 703 hw->wiphy->wowlan = &mvm->wowlan; 704 } 705 #endif 706 707 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 708 /* assign default bcast filtering configuration */ 709 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 710 #endif 711 712 ret = iwl_mvm_leds_init(mvm); 713 if (ret) 714 return ret; 715 716 if (fw_has_capa(&mvm->fw->ucode_capa, 717 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 718 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 719 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 720 ieee80211_hw_set(hw, TDLS_WIDER_BW); 721 } 722 723 if (fw_has_capa(&mvm->fw->ucode_capa, 724 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 725 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 726 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 727 } 728 729 hw->netdev_features |= mvm->cfg->features; 730 if (!iwl_mvm_is_csum_supported(mvm)) { 731 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 732 NETIF_F_RXCSUM); 733 /* We may support SW TX CSUM */ 734 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 735 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 736 } 737 738 ret = ieee80211_register_hw(mvm->hw); 739 if (ret) 740 iwl_mvm_leds_exit(mvm); 741 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 742 743 if (mvm->cfg->vht_mu_mimo_supported) 744 wiphy_ext_feature_set(hw->wiphy, 745 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 746 747 return ret; 748 } 749 750 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 751 struct ieee80211_sta *sta, 752 struct sk_buff *skb) 753 { 754 struct iwl_mvm_sta *mvmsta; 755 bool defer = false; 756 757 /* 758 * double check the IN_D0I3 flag both before and after 759 * taking the spinlock, in order to prevent taking 760 * the spinlock when not needed. 761 */ 762 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 763 return false; 764 765 spin_lock(&mvm->d0i3_tx_lock); 766 /* 767 * testing the flag again ensures the skb dequeue 768 * loop (on d0i3 exit) hasn't run yet. 769 */ 770 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 771 goto out; 772 773 mvmsta = iwl_mvm_sta_from_mac80211(sta); 774 if (mvmsta->sta_id == IWL_MVM_INVALID_STA || 775 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 776 goto out; 777 778 __skb_queue_tail(&mvm->d0i3_tx, skb); 779 ieee80211_stop_queues(mvm->hw); 780 781 /* trigger wakeup */ 782 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 783 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 784 785 defer = true; 786 out: 787 spin_unlock(&mvm->d0i3_tx_lock); 788 return defer; 789 } 790 791 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 792 struct ieee80211_tx_control *control, 793 struct sk_buff *skb) 794 { 795 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 796 struct ieee80211_sta *sta = control->sta; 797 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 798 struct ieee80211_hdr *hdr = (void *)skb->data; 799 800 if (iwl_mvm_is_radio_killed(mvm)) { 801 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 802 goto drop; 803 } 804 805 if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && 806 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 807 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 808 goto drop; 809 810 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 811 if ((info->control.vif->type == NL80211_IFTYPE_AP || 812 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 813 ieee80211_is_mgmt(hdr->frame_control) && 814 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 815 sta = NULL; 816 817 /* If there is no sta, and it's not offchannel - send through AP */ 818 if (info->control.vif->type == NL80211_IFTYPE_STATION && 819 info->hw_queue != IWL_MVM_OFFCHANNEL_QUEUE && !sta) { 820 struct iwl_mvm_vif *mvmvif = 821 iwl_mvm_vif_from_mac80211(info->control.vif); 822 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 823 824 if (ap_sta_id < IWL_MVM_STATION_COUNT) { 825 /* mac80211 holds rcu read lock */ 826 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 827 if (IS_ERR_OR_NULL(sta)) 828 goto drop; 829 } 830 } 831 832 if (sta) { 833 if (iwl_mvm_defer_tx(mvm, sta, skb)) 834 return; 835 if (iwl_mvm_tx_skb(mvm, skb, sta)) 836 goto drop; 837 return; 838 } 839 840 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 841 goto drop; 842 return; 843 drop: 844 ieee80211_free_txskb(hw, skb); 845 } 846 847 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) 848 { 849 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) 850 return false; 851 return true; 852 } 853 854 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) 855 { 856 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) 857 return false; 858 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) 859 return true; 860 861 /* enabled by default */ 862 return true; 863 } 864 865 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 866 do { \ 867 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 868 break; \ 869 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 870 } while (0) 871 872 static void 873 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 874 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 875 enum ieee80211_ampdu_mlme_action action) 876 { 877 struct iwl_fw_dbg_trigger_tlv *trig; 878 struct iwl_fw_dbg_trigger_ba *ba_trig; 879 880 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 881 FW_DBG_TRIGGER_BA); 882 if (!trig) 883 return; 884 885 ba_trig = (void *)trig->data; 886 887 switch (action) { 888 case IEEE80211_AMPDU_TX_OPERATIONAL: { 889 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 890 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 891 892 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 893 "TX AGG START: MAC %pM tid %d ssn %d\n", 894 sta->addr, tid, tid_data->ssn); 895 break; 896 } 897 case IEEE80211_AMPDU_TX_STOP_CONT: 898 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 899 "TX AGG STOP: MAC %pM tid %d\n", 900 sta->addr, tid); 901 break; 902 case IEEE80211_AMPDU_RX_START: 903 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 904 "RX AGG START: MAC %pM tid %d ssn %d\n", 905 sta->addr, tid, rx_ba_ssn); 906 break; 907 case IEEE80211_AMPDU_RX_STOP: 908 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 909 "RX AGG STOP: MAC %pM tid %d\n", 910 sta->addr, tid); 911 break; 912 default: 913 break; 914 } 915 } 916 917 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 918 struct ieee80211_vif *vif, 919 struct ieee80211_ampdu_params *params) 920 { 921 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 922 int ret; 923 bool tx_agg_ref = false; 924 struct ieee80211_sta *sta = params->sta; 925 enum ieee80211_ampdu_mlme_action action = params->action; 926 u16 tid = params->tid; 927 u16 *ssn = ¶ms->ssn; 928 u16 buf_size = params->buf_size; 929 bool amsdu = params->amsdu; 930 u16 timeout = params->timeout; 931 932 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 933 sta->addr, tid, action); 934 935 if (!(mvm->nvm_data->sku_cap_11n_enable)) 936 return -EACCES; 937 938 /* return from D0i3 before starting a new Tx aggregation */ 939 switch (action) { 940 case IEEE80211_AMPDU_TX_START: 941 case IEEE80211_AMPDU_TX_STOP_CONT: 942 case IEEE80211_AMPDU_TX_STOP_FLUSH: 943 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 944 case IEEE80211_AMPDU_TX_OPERATIONAL: 945 /* 946 * for tx start, wait synchronously until D0i3 exit to 947 * get the correct sequence number for the tid. 948 * additionally, some other ampdu actions use direct 949 * target access, which is not handled automatically 950 * by the trans layer (unlike commands), so wait for 951 * d0i3 exit in these cases as well. 952 */ 953 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 954 if (ret) 955 return ret; 956 957 tx_agg_ref = true; 958 break; 959 default: 960 break; 961 } 962 963 mutex_lock(&mvm->mutex); 964 965 switch (action) { 966 case IEEE80211_AMPDU_RX_START: 967 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 968 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 969 struct iwl_mvm_vif *mvmvif; 970 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 971 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 972 973 mdata->opened_rx_ba_sessions = true; 974 mvmvif = iwl_mvm_vif_from_mac80211(vif); 975 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 976 } 977 if (!iwl_enable_rx_ampdu(mvm->cfg)) { 978 ret = -EINVAL; 979 break; 980 } 981 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 982 timeout); 983 break; 984 case IEEE80211_AMPDU_RX_STOP: 985 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 986 timeout); 987 break; 988 case IEEE80211_AMPDU_TX_START: 989 if (!iwl_enable_tx_ampdu(mvm->cfg)) { 990 ret = -EINVAL; 991 break; 992 } 993 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 994 break; 995 case IEEE80211_AMPDU_TX_STOP_CONT: 996 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 997 break; 998 case IEEE80211_AMPDU_TX_STOP_FLUSH: 999 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1000 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 1001 break; 1002 case IEEE80211_AMPDU_TX_OPERATIONAL: 1003 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 1004 buf_size, amsdu); 1005 break; 1006 default: 1007 WARN_ON_ONCE(1); 1008 ret = -EINVAL; 1009 break; 1010 } 1011 1012 if (!ret) { 1013 u16 rx_ba_ssn = 0; 1014 1015 if (action == IEEE80211_AMPDU_RX_START) 1016 rx_ba_ssn = *ssn; 1017 1018 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1019 rx_ba_ssn, action); 1020 } 1021 mutex_unlock(&mvm->mutex); 1022 1023 /* 1024 * If the tid is marked as started, we won't use it for offloaded 1025 * traffic on the next D0i3 entry. It's safe to unref. 1026 */ 1027 if (tx_agg_ref) 1028 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 1029 1030 return ret; 1031 } 1032 1033 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1034 struct ieee80211_vif *vif) 1035 { 1036 struct iwl_mvm *mvm = data; 1037 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1038 1039 mvmvif->uploaded = false; 1040 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1041 1042 spin_lock_bh(&mvm->time_event_lock); 1043 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1044 spin_unlock_bh(&mvm->time_event_lock); 1045 1046 mvmvif->phy_ctxt = NULL; 1047 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1048 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1049 } 1050 1051 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1052 { 1053 /* clear the D3 reconfig, we only need it to avoid dumping a 1054 * firmware coredump on reconfiguration, we shouldn't do that 1055 * on D3->D0 transition 1056 */ 1057 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) { 1058 mvm->fwrt.dump.desc = &iwl_dump_desc_assert; 1059 iwl_fw_error_dump(&mvm->fwrt); 1060 } 1061 1062 /* cleanup all stale references (scan, roc), but keep the 1063 * ucode_down ref until reconfig is complete 1064 */ 1065 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 1066 1067 iwl_mvm_stop_device(mvm); 1068 1069 mvm->scan_status = 0; 1070 mvm->ps_disabled = false; 1071 mvm->calibrating = false; 1072 1073 /* just in case one was running */ 1074 iwl_mvm_cleanup_roc_te(mvm); 1075 ieee80211_remain_on_channel_expired(mvm->hw); 1076 1077 /* 1078 * cleanup all interfaces, even inactive ones, as some might have 1079 * gone down during the HW restart 1080 */ 1081 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1082 1083 mvm->p2p_device_vif = NULL; 1084 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1085 1086 iwl_mvm_reset_phy_ctxts(mvm); 1087 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1088 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames)); 1089 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1090 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1091 1092 ieee80211_wake_queues(mvm->hw); 1093 1094 /* clear any stale d0i3 state */ 1095 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1096 1097 mvm->vif_count = 0; 1098 mvm->rx_ba_sessions = 0; 1099 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1100 mvm->monitor_on = false; 1101 1102 /* keep statistics ticking */ 1103 iwl_mvm_accu_radio_stats(mvm); 1104 } 1105 1106 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1107 { 1108 int ret; 1109 1110 lockdep_assert_held(&mvm->mutex); 1111 1112 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1113 /* 1114 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1115 * so later code will - from now on - see that we're doing it. 1116 */ 1117 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1118 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1119 /* Clean up some internal and mac80211 state on restart */ 1120 iwl_mvm_restart_cleanup(mvm); 1121 } else { 1122 /* Hold the reference to prevent runtime suspend while 1123 * the start procedure runs. It's a bit confusing 1124 * that the UCODE_DOWN reference is taken, but it just 1125 * means "UCODE is not UP yet". ( TODO: rename this 1126 * reference). 1127 */ 1128 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1129 } 1130 ret = iwl_mvm_up(mvm); 1131 1132 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1133 /* Something went wrong - we need to finish some cleanup 1134 * that normally iwl_mvm_mac_restart_complete() below 1135 * would do. 1136 */ 1137 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1138 #ifdef CONFIG_PM 1139 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1140 #endif 1141 } 1142 1143 return ret; 1144 } 1145 1146 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1147 { 1148 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1149 int ret; 1150 1151 /* Some hw restart cleanups must not hold the mutex */ 1152 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1153 /* 1154 * Make sure we are out of d0i3. This is needed 1155 * to make sure the reference accounting is correct 1156 * (and there is no stale d0i3_exit_work). 1157 */ 1158 wait_event_timeout(mvm->d0i3_exit_waitq, 1159 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1160 &mvm->status), 1161 HZ); 1162 } 1163 1164 mutex_lock(&mvm->mutex); 1165 ret = __iwl_mvm_mac_start(mvm); 1166 mutex_unlock(&mvm->mutex); 1167 1168 return ret; 1169 } 1170 1171 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1172 { 1173 int ret; 1174 1175 mutex_lock(&mvm->mutex); 1176 1177 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1178 #ifdef CONFIG_PM 1179 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1180 #endif 1181 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1182 if (ret) 1183 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1184 ret); 1185 1186 /* allow transport/FW low power modes */ 1187 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1188 1189 /* 1190 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1191 * of packets the FW sent out, so we must reconnect. 1192 */ 1193 iwl_mvm_teardown_tdls_peers(mvm); 1194 1195 mutex_unlock(&mvm->mutex); 1196 } 1197 1198 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1199 { 1200 if (iwl_mvm_is_d0i3_supported(mvm) && 1201 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1202 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1203 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1204 &mvm->status), 1205 HZ), 1206 "D0i3 exit on resume timed out\n"); 1207 } 1208 1209 static void 1210 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1211 enum ieee80211_reconfig_type reconfig_type) 1212 { 1213 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1214 1215 switch (reconfig_type) { 1216 case IEEE80211_RECONFIG_TYPE_RESTART: 1217 iwl_mvm_restart_complete(mvm); 1218 break; 1219 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1220 iwl_mvm_resume_complete(mvm); 1221 break; 1222 } 1223 } 1224 1225 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1226 { 1227 lockdep_assert_held(&mvm->mutex); 1228 1229 /* firmware counters are obviously reset now, but we shouldn't 1230 * partially track so also clear the fw_reset_accu counters. 1231 */ 1232 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1233 1234 /* async_handlers_wk is now blocked */ 1235 1236 /* 1237 * The work item could be running or queued if the 1238 * ROC time event stops just as we get here. 1239 */ 1240 flush_work(&mvm->roc_done_wk); 1241 1242 iwl_mvm_stop_device(mvm); 1243 1244 iwl_mvm_async_handlers_purge(mvm); 1245 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1246 1247 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1248 iwl_mvm_del_aux_sta(mvm); 1249 1250 /* 1251 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1252 * hw (as restart_complete() won't be called in this case) and mac80211 1253 * won't execute the restart. 1254 * But make sure to cleanup interfaces that have gone down before/during 1255 * HW restart was requested. 1256 */ 1257 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1258 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1259 &mvm->status)) 1260 ieee80211_iterate_interfaces(mvm->hw, 0, 1261 iwl_mvm_cleanup_iterator, mvm); 1262 1263 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1264 * make sure there's nothing left there and warn if any is found. 1265 */ 1266 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1267 int i; 1268 1269 for (i = 0; i < mvm->max_scans; i++) { 1270 if (WARN_ONCE(mvm->scan_uid_status[i], 1271 "UMAC scan UID %d status was not cleaned\n", 1272 i)) 1273 mvm->scan_uid_status[i] = 0; 1274 } 1275 } 1276 } 1277 1278 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1279 { 1280 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1281 1282 flush_work(&mvm->d0i3_exit_work); 1283 flush_work(&mvm->async_handlers_wk); 1284 flush_work(&mvm->add_stream_wk); 1285 1286 /* 1287 * Lock and clear the firmware running bit here already, so that 1288 * new commands coming in elsewhere, e.g. from debugfs, will not 1289 * be able to proceed. This is important here because one of those 1290 * debugfs files causes the firmware dump to be triggered, and if we 1291 * don't stop debugfs accesses before canceling that it could be 1292 * retriggered after we flush it but before we've cleared the bit. 1293 */ 1294 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1295 1296 iwl_fw_cancel_dump(&mvm->fwrt); 1297 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1298 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1299 iwl_fw_free_dump_desc(&mvm->fwrt); 1300 1301 mutex_lock(&mvm->mutex); 1302 __iwl_mvm_mac_stop(mvm); 1303 mutex_unlock(&mvm->mutex); 1304 1305 /* 1306 * The worker might have been waiting for the mutex, let it run and 1307 * discover that its list is now empty. 1308 */ 1309 cancel_work_sync(&mvm->async_handlers_wk); 1310 } 1311 1312 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1313 { 1314 u16 i; 1315 1316 lockdep_assert_held(&mvm->mutex); 1317 1318 for (i = 0; i < NUM_PHY_CTX; i++) 1319 if (!mvm->phy_ctxts[i].ref) 1320 return &mvm->phy_ctxts[i]; 1321 1322 IWL_ERR(mvm, "No available PHY context\n"); 1323 return NULL; 1324 } 1325 1326 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1327 s16 tx_power) 1328 { 1329 int len; 1330 union { 1331 struct iwl_dev_tx_power_cmd v5; 1332 struct iwl_dev_tx_power_cmd_v4 v4; 1333 } cmd = { 1334 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1335 .v5.v3.mac_context_id = 1336 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1337 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1338 }; 1339 1340 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1341 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1342 1343 if (fw_has_api(&mvm->fw->ucode_capa, 1344 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1345 len = sizeof(cmd.v5); 1346 else if (fw_has_capa(&mvm->fw->ucode_capa, 1347 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1348 len = sizeof(cmd.v4); 1349 else 1350 len = sizeof(cmd.v4.v3); 1351 1352 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1353 } 1354 1355 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1356 struct ieee80211_vif *vif) 1357 { 1358 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1359 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1360 int ret; 1361 1362 mvmvif->mvm = mvm; 1363 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1364 1365 /* 1366 * make sure D0i3 exit is completed, otherwise a target access 1367 * during tx queue configuration could be done when still in 1368 * D0i3 state. 1369 */ 1370 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1371 if (ret) 1372 return ret; 1373 1374 /* 1375 * Not much to do here. The stack will not allow interface 1376 * types or combinations that we didn't advertise, so we 1377 * don't really have to check the types. 1378 */ 1379 1380 mutex_lock(&mvm->mutex); 1381 1382 /* make sure that beacon statistics don't go backwards with FW reset */ 1383 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1384 mvmvif->beacon_stats.accu_num_beacons += 1385 mvmvif->beacon_stats.num_beacons; 1386 1387 /* Allocate resources for the MAC context, and add it to the fw */ 1388 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1389 if (ret) 1390 goto out_unlock; 1391 1392 /* Counting number of interfaces is needed for legacy PM */ 1393 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1394 mvm->vif_count++; 1395 1396 /* 1397 * The AP binding flow can be done only after the beacon 1398 * template is configured (which happens only in the mac80211 1399 * start_ap() flow), and adding the broadcast station can happen 1400 * only after the binding. 1401 * In addition, since modifying the MAC before adding a bcast 1402 * station is not allowed by the FW, delay the adding of MAC context to 1403 * the point where we can also add the bcast station. 1404 * In short: there's not much we can do at this point, other than 1405 * allocating resources :) 1406 */ 1407 if (vif->type == NL80211_IFTYPE_AP || 1408 vif->type == NL80211_IFTYPE_ADHOC) { 1409 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1410 if (ret) { 1411 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1412 goto out_release; 1413 } 1414 1415 /* 1416 * Only queue for this station is the mcast queue, 1417 * which shouldn't be in TFD mask anyway 1418 */ 1419 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1420 0, vif->type, 1421 IWL_STA_MULTICAST); 1422 if (ret) 1423 goto out_release; 1424 1425 iwl_mvm_vif_dbgfs_register(mvm, vif); 1426 goto out_unlock; 1427 } 1428 1429 mvmvif->features |= hw->netdev_features; 1430 1431 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1432 if (ret) 1433 goto out_release; 1434 1435 ret = iwl_mvm_power_update_mac(mvm); 1436 if (ret) 1437 goto out_remove_mac; 1438 1439 /* beacon filtering */ 1440 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1441 if (ret) 1442 goto out_remove_mac; 1443 1444 if (!mvm->bf_allowed_vif && 1445 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1446 mvm->bf_allowed_vif = mvmvif; 1447 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1448 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1449 } 1450 1451 /* 1452 * P2P_DEVICE interface does not have a channel context assigned to it, 1453 * so a dedicated PHY context is allocated to it and the corresponding 1454 * MAC context is bound to it at this stage. 1455 */ 1456 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1457 1458 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1459 if (!mvmvif->phy_ctxt) { 1460 ret = -ENOSPC; 1461 goto out_free_bf; 1462 } 1463 1464 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1465 ret = iwl_mvm_binding_add_vif(mvm, vif); 1466 if (ret) 1467 goto out_unref_phy; 1468 1469 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1470 if (ret) 1471 goto out_unbind; 1472 1473 /* Save a pointer to p2p device vif, so it can later be used to 1474 * update the p2p device MAC when a GO is started/stopped */ 1475 mvm->p2p_device_vif = vif; 1476 } 1477 1478 iwl_mvm_tcm_add_vif(mvm, vif); 1479 1480 if (vif->type == NL80211_IFTYPE_MONITOR) 1481 mvm->monitor_on = true; 1482 1483 iwl_mvm_vif_dbgfs_register(mvm, vif); 1484 goto out_unlock; 1485 1486 out_unbind: 1487 iwl_mvm_binding_remove_vif(mvm, vif); 1488 out_unref_phy: 1489 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1490 out_free_bf: 1491 if (mvm->bf_allowed_vif == mvmvif) { 1492 mvm->bf_allowed_vif = NULL; 1493 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1494 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1495 } 1496 out_remove_mac: 1497 mvmvif->phy_ctxt = NULL; 1498 iwl_mvm_mac_ctxt_remove(mvm, vif); 1499 out_release: 1500 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1501 mvm->vif_count--; 1502 out_unlock: 1503 mutex_unlock(&mvm->mutex); 1504 1505 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1506 1507 return ret; 1508 } 1509 1510 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1511 struct ieee80211_vif *vif) 1512 { 1513 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1514 /* 1515 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1516 * We assume here that all the packets sent to the OFFCHANNEL 1517 * queue are sent in ROC session. 1518 */ 1519 flush_work(&mvm->roc_done_wk); 1520 } 1521 } 1522 1523 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1524 struct ieee80211_vif *vif) 1525 { 1526 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1527 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1528 struct iwl_probe_resp_data *probe_data; 1529 1530 iwl_mvm_prepare_mac_removal(mvm, vif); 1531 1532 if (!(vif->type == NL80211_IFTYPE_AP || 1533 vif->type == NL80211_IFTYPE_ADHOC)) 1534 iwl_mvm_tcm_rm_vif(mvm, vif); 1535 1536 mutex_lock(&mvm->mutex); 1537 1538 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1539 lockdep_is_held(&mvm->mutex)); 1540 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1541 if (probe_data) 1542 kfree_rcu(probe_data, rcu_head); 1543 1544 if (mvm->bf_allowed_vif == mvmvif) { 1545 mvm->bf_allowed_vif = NULL; 1546 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1547 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1548 } 1549 1550 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1551 1552 /* 1553 * For AP/GO interface, the tear down of the resources allocated to the 1554 * interface is be handled as part of the stop_ap flow. 1555 */ 1556 if (vif->type == NL80211_IFTYPE_AP || 1557 vif->type == NL80211_IFTYPE_ADHOC) { 1558 #ifdef CONFIG_NL80211_TESTMODE 1559 if (vif == mvm->noa_vif) { 1560 mvm->noa_vif = NULL; 1561 mvm->noa_duration = 0; 1562 } 1563 #endif 1564 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1565 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1566 goto out_release; 1567 } 1568 1569 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1570 mvm->p2p_device_vif = NULL; 1571 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1572 iwl_mvm_binding_remove_vif(mvm, vif); 1573 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1574 mvmvif->phy_ctxt = NULL; 1575 } 1576 1577 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1578 mvm->vif_count--; 1579 1580 iwl_mvm_power_update_mac(mvm); 1581 iwl_mvm_mac_ctxt_remove(mvm, vif); 1582 1583 if (vif->type == NL80211_IFTYPE_MONITOR) 1584 mvm->monitor_on = false; 1585 1586 out_release: 1587 mutex_unlock(&mvm->mutex); 1588 } 1589 1590 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1591 { 1592 return 0; 1593 } 1594 1595 struct iwl_mvm_mc_iter_data { 1596 struct iwl_mvm *mvm; 1597 int port_id; 1598 }; 1599 1600 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1601 struct ieee80211_vif *vif) 1602 { 1603 struct iwl_mvm_mc_iter_data *data = _data; 1604 struct iwl_mvm *mvm = data->mvm; 1605 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1606 struct iwl_host_cmd hcmd = { 1607 .id = MCAST_FILTER_CMD, 1608 .flags = CMD_ASYNC, 1609 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1610 }; 1611 int ret, len; 1612 1613 /* if we don't have free ports, mcast frames will be dropped */ 1614 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1615 return; 1616 1617 if (vif->type != NL80211_IFTYPE_STATION || 1618 !vif->bss_conf.assoc) 1619 return; 1620 1621 cmd->port_id = data->port_id++; 1622 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1623 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1624 1625 hcmd.len[0] = len; 1626 hcmd.data[0] = cmd; 1627 1628 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1629 if (ret) 1630 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1631 } 1632 1633 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1634 { 1635 struct iwl_mvm_mc_iter_data iter_data = { 1636 .mvm = mvm, 1637 }; 1638 1639 lockdep_assert_held(&mvm->mutex); 1640 1641 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1642 return; 1643 1644 ieee80211_iterate_active_interfaces_atomic( 1645 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1646 iwl_mvm_mc_iface_iterator, &iter_data); 1647 } 1648 1649 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1650 struct netdev_hw_addr_list *mc_list) 1651 { 1652 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1653 struct iwl_mcast_filter_cmd *cmd; 1654 struct netdev_hw_addr *addr; 1655 int addr_count; 1656 bool pass_all; 1657 int len; 1658 1659 addr_count = netdev_hw_addr_list_count(mc_list); 1660 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1661 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1662 if (pass_all) 1663 addr_count = 0; 1664 1665 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1666 cmd = kzalloc(len, GFP_ATOMIC); 1667 if (!cmd) 1668 return 0; 1669 1670 if (pass_all) { 1671 cmd->pass_all = 1; 1672 return (u64)(unsigned long)cmd; 1673 } 1674 1675 netdev_hw_addr_list_for_each(addr, mc_list) { 1676 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1677 cmd->count, addr->addr); 1678 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1679 addr->addr, ETH_ALEN); 1680 cmd->count++; 1681 } 1682 1683 return (u64)(unsigned long)cmd; 1684 } 1685 1686 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1687 unsigned int changed_flags, 1688 unsigned int *total_flags, 1689 u64 multicast) 1690 { 1691 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1692 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1693 1694 mutex_lock(&mvm->mutex); 1695 1696 /* replace previous configuration */ 1697 kfree(mvm->mcast_filter_cmd); 1698 mvm->mcast_filter_cmd = cmd; 1699 1700 if (!cmd) 1701 goto out; 1702 1703 if (changed_flags & FIF_ALLMULTI) 1704 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1705 1706 if (cmd->pass_all) 1707 cmd->count = 0; 1708 1709 iwl_mvm_recalc_multicast(mvm); 1710 out: 1711 mutex_unlock(&mvm->mutex); 1712 *total_flags = 0; 1713 } 1714 1715 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1716 struct ieee80211_vif *vif, 1717 unsigned int filter_flags, 1718 unsigned int changed_flags) 1719 { 1720 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1721 1722 /* We support only filter for probe requests */ 1723 if (!(changed_flags & FIF_PROBE_REQ)) 1724 return; 1725 1726 /* Supported only for p2p client interfaces */ 1727 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1728 !vif->p2p) 1729 return; 1730 1731 mutex_lock(&mvm->mutex); 1732 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1733 mutex_unlock(&mvm->mutex); 1734 } 1735 1736 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1737 struct iwl_bcast_iter_data { 1738 struct iwl_mvm *mvm; 1739 struct iwl_bcast_filter_cmd *cmd; 1740 u8 current_filter; 1741 }; 1742 1743 static void 1744 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1745 const struct iwl_fw_bcast_filter *in_filter, 1746 struct iwl_fw_bcast_filter *out_filter) 1747 { 1748 struct iwl_fw_bcast_filter_attr *attr; 1749 int i; 1750 1751 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1752 1753 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1754 attr = &out_filter->attrs[i]; 1755 1756 if (!attr->mask) 1757 break; 1758 1759 switch (attr->reserved1) { 1760 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1761 if (vif->bss_conf.arp_addr_cnt != 1) { 1762 attr->mask = 0; 1763 continue; 1764 } 1765 1766 attr->val = vif->bss_conf.arp_addr_list[0]; 1767 break; 1768 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1769 attr->val = *(__be32 *)&vif->addr[2]; 1770 break; 1771 default: 1772 break; 1773 } 1774 attr->reserved1 = 0; 1775 out_filter->num_attrs++; 1776 } 1777 } 1778 1779 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1780 struct ieee80211_vif *vif) 1781 { 1782 struct iwl_bcast_iter_data *data = _data; 1783 struct iwl_mvm *mvm = data->mvm; 1784 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1785 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1786 struct iwl_fw_bcast_mac *bcast_mac; 1787 int i; 1788 1789 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1790 return; 1791 1792 bcast_mac = &cmd->macs[mvmvif->id]; 1793 1794 /* 1795 * enable filtering only for associated stations, but not for P2P 1796 * Clients 1797 */ 1798 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1799 !vif->bss_conf.assoc) 1800 return; 1801 1802 bcast_mac->default_discard = 1; 1803 1804 /* copy all configured filters */ 1805 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1806 /* 1807 * Make sure we don't exceed our filters limit. 1808 * if there is still a valid filter to be configured, 1809 * be on the safe side and just allow bcast for this mac. 1810 */ 1811 if (WARN_ON_ONCE(data->current_filter >= 1812 ARRAY_SIZE(cmd->filters))) { 1813 bcast_mac->default_discard = 0; 1814 bcast_mac->attached_filters = 0; 1815 break; 1816 } 1817 1818 iwl_mvm_set_bcast_filter(vif, 1819 &mvm->bcast_filters[i], 1820 &cmd->filters[data->current_filter]); 1821 1822 /* skip current filter if it contains no attributes */ 1823 if (!cmd->filters[data->current_filter].num_attrs) 1824 continue; 1825 1826 /* attach the filter to current mac */ 1827 bcast_mac->attached_filters |= 1828 cpu_to_le16(BIT(data->current_filter)); 1829 1830 data->current_filter++; 1831 } 1832 } 1833 1834 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1835 struct iwl_bcast_filter_cmd *cmd) 1836 { 1837 struct iwl_bcast_iter_data iter_data = { 1838 .mvm = mvm, 1839 .cmd = cmd, 1840 }; 1841 1842 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1843 return false; 1844 1845 memset(cmd, 0, sizeof(*cmd)); 1846 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1847 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1848 1849 #ifdef CONFIG_IWLWIFI_DEBUGFS 1850 /* use debugfs filters/macs if override is configured */ 1851 if (mvm->dbgfs_bcast_filtering.override) { 1852 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1853 sizeof(cmd->filters)); 1854 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1855 sizeof(cmd->macs)); 1856 return true; 1857 } 1858 #endif 1859 1860 /* if no filters are configured, do nothing */ 1861 if (!mvm->bcast_filters) 1862 return false; 1863 1864 /* configure and attach these filters for each associated sta vif */ 1865 ieee80211_iterate_active_interfaces( 1866 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1867 iwl_mvm_bcast_filter_iterator, &iter_data); 1868 1869 return true; 1870 } 1871 1872 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1873 { 1874 struct iwl_bcast_filter_cmd cmd; 1875 1876 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1877 return 0; 1878 1879 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1880 return 0; 1881 1882 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1883 sizeof(cmd), &cmd); 1884 } 1885 #else 1886 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1887 { 1888 return 0; 1889 } 1890 #endif 1891 1892 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1893 struct ieee80211_vif *vif) 1894 { 1895 struct iwl_mu_group_mgmt_cmd cmd = {}; 1896 1897 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1898 WLAN_MEMBERSHIP_LEN); 1899 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1900 WLAN_USER_POSITION_LEN); 1901 1902 return iwl_mvm_send_cmd_pdu(mvm, 1903 WIDE_ID(DATA_PATH_GROUP, 1904 UPDATE_MU_GROUPS_CMD), 1905 0, sizeof(cmd), &cmd); 1906 } 1907 1908 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1909 struct ieee80211_vif *vif) 1910 { 1911 if (vif->mu_mimo_owner) { 1912 struct iwl_mu_group_mgmt_notif *notif = _data; 1913 1914 /* 1915 * MU-MIMO Group Id action frame is little endian. We treat 1916 * the data received from firmware as if it came from the 1917 * action frame, so no conversion is needed. 1918 */ 1919 ieee80211_update_mu_groups(vif, 1920 (u8 *)¬if->membership_status, 1921 (u8 *)¬if->user_position); 1922 } 1923 } 1924 1925 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1926 struct iwl_rx_cmd_buffer *rxb) 1927 { 1928 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1929 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1930 1931 ieee80211_iterate_active_interfaces_atomic( 1932 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1933 iwl_mvm_mu_mimo_iface_iterator, notif); 1934 } 1935 1936 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1937 { 1938 u8 byte_num = ppe_pos_bit / 8; 1939 u8 bit_num = ppe_pos_bit % 8; 1940 u8 residue_bits; 1941 u8 res; 1942 1943 if (bit_num <= 5) 1944 return (ppe[byte_num] >> bit_num) & 1945 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 1946 1947 /* 1948 * If bit_num > 5, we have to combine bits with next byte. 1949 * Calculate how many bits we need to take from current byte (called 1950 * here "residue_bits"), and add them to bits from next byte. 1951 */ 1952 1953 residue_bits = 8 - bit_num; 1954 1955 res = (ppe[byte_num + 1] & 1956 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 1957 residue_bits; 1958 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 1959 1960 return res; 1961 } 1962 1963 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 1964 struct ieee80211_vif *vif, u8 sta_id) 1965 { 1966 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1967 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 1968 .sta_id = sta_id, 1969 .tid_limit = IWL_MAX_TID_COUNT, 1970 .bss_color = vif->bss_conf.bss_color, 1971 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 1972 .frame_time_rts_th = 1973 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 1974 }; 1975 struct ieee80211_sta *sta; 1976 u32 flags; 1977 int i; 1978 1979 rcu_read_lock(); 1980 1981 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 1982 if (IS_ERR(sta)) { 1983 rcu_read_unlock(); 1984 WARN(1, "Can't find STA to configure HE\n"); 1985 return; 1986 } 1987 1988 if (!sta->he_cap.has_he) { 1989 rcu_read_unlock(); 1990 return; 1991 } 1992 1993 flags = 0; 1994 1995 /* HTC flags */ 1996 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 1997 IEEE80211_HE_MAC_CAP0_HTC_HE) 1998 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 1999 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2000 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2001 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2002 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2003 u8 link_adap = 2004 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2005 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2006 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2007 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2008 2009 if (link_adap == 2) 2010 sta_ctxt_cmd.htc_flags |= 2011 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2012 else if (link_adap == 3) 2013 sta_ctxt_cmd.htc_flags |= 2014 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2015 } 2016 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2017 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2018 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2019 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2020 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2021 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2022 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2023 2024 /* If PPE Thresholds exist, parse them into a FW-familiar format */ 2025 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2026 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2027 u8 nss = (sta->he_cap.ppe_thres[0] & 2028 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2029 u8 ru_index_bitmap = 2030 (sta->he_cap.ppe_thres[0] & 2031 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2032 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2033 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2034 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2035 2036 /* 2037 * FW currently supports only nss == MAX_HE_SUPP_NSS 2038 * 2039 * If nss > MAX: we can ignore values we don't support 2040 * If nss < MAX: we can set zeros in other streams 2041 */ 2042 if (nss > MAX_HE_SUPP_NSS) { 2043 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2044 MAX_HE_SUPP_NSS); 2045 nss = MAX_HE_SUPP_NSS; 2046 } 2047 2048 for (i = 0; i < nss; i++) { 2049 u8 ru_index_tmp = ru_index_bitmap << 1; 2050 u8 bw; 2051 2052 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2053 ru_index_tmp >>= 1; 2054 if (!(ru_index_tmp & 1)) 2055 continue; 2056 2057 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2058 iwl_mvm_he_get_ppe_val(ppe, 2059 ppe_pos_bit); 2060 ppe_pos_bit += 2061 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2062 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2063 iwl_mvm_he_get_ppe_val(ppe, 2064 ppe_pos_bit); 2065 ppe_pos_bit += 2066 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2067 } 2068 } 2069 2070 flags |= STA_CTXT_HE_PACKET_EXT; 2071 } 2072 rcu_read_unlock(); 2073 2074 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2075 flags |= STA_CTXT_HE_MU_EDCA_CW; 2076 for (i = 0; i < AC_NUM; i++) { 2077 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2078 &mvmvif->queue_params[i].mu_edca_param_rec; 2079 2080 if (!mvmvif->queue_params[i].mu_edca) { 2081 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2082 break; 2083 } 2084 2085 sta_ctxt_cmd.trig_based_txf[i].cwmin = 2086 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2087 sta_ctxt_cmd.trig_based_txf[i].cwmax = 2088 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2089 sta_ctxt_cmd.trig_based_txf[i].aifsn = 2090 cpu_to_le16(mu_edca->aifsn); 2091 sta_ctxt_cmd.trig_based_txf[i].mu_time = 2092 cpu_to_le16(mu_edca->mu_edca_timer); 2093 } 2094 2095 if (vif->bss_conf.multi_sta_back_32bit) 2096 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2097 2098 if (vif->bss_conf.ack_enabled) 2099 flags |= STA_CTXT_HE_ACK_ENABLED; 2100 2101 if (vif->bss_conf.uora_exists) { 2102 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2103 2104 sta_ctxt_cmd.rand_alloc_ecwmin = 2105 vif->bss_conf.uora_ocw_range & 0x7; 2106 sta_ctxt_cmd.rand_alloc_ecwmax = 2107 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2108 } 2109 2110 /* TODO: support Multi BSSID IE */ 2111 2112 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2113 2114 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2115 DATA_PATH_GROUP, 0), 2116 0, sizeof(sta_ctxt_cmd), &sta_ctxt_cmd)) 2117 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2118 } 2119 2120 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2121 struct ieee80211_vif *vif, 2122 struct ieee80211_bss_conf *bss_conf, 2123 u32 changes) 2124 { 2125 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2126 int ret; 2127 2128 /* 2129 * Re-calculate the tsf id, as the master-slave relations depend on the 2130 * beacon interval, which was not known when the station interface was 2131 * added. 2132 */ 2133 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2134 if (vif->bss_conf.he_support && 2135 !iwlwifi_mod_params.disable_11ax) 2136 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2137 2138 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2139 } 2140 2141 /* 2142 * If we're not associated yet, take the (new) BSSID before associating 2143 * so the firmware knows. If we're already associated, then use the old 2144 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2145 * branch for disassociation below. 2146 */ 2147 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2148 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2149 2150 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2151 if (ret) 2152 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2153 2154 /* after sending it once, adopt mac80211 data */ 2155 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2156 mvmvif->associated = bss_conf->assoc; 2157 2158 if (changes & BSS_CHANGED_ASSOC) { 2159 if (bss_conf->assoc) { 2160 /* clear statistics to get clean beacon counter */ 2161 iwl_mvm_request_statistics(mvm, true); 2162 memset(&mvmvif->beacon_stats, 0, 2163 sizeof(mvmvif->beacon_stats)); 2164 2165 /* add quota for this interface */ 2166 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2167 if (ret) { 2168 IWL_ERR(mvm, "failed to update quotas\n"); 2169 return; 2170 } 2171 2172 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2173 &mvm->status)) { 2174 /* 2175 * If we're restarting then the firmware will 2176 * obviously have lost synchronisation with 2177 * the AP. It will attempt to synchronise by 2178 * itself, but we can make it more reliable by 2179 * scheduling a session protection time event. 2180 * 2181 * The firmware needs to receive a beacon to 2182 * catch up with synchronisation, use 110% of 2183 * the beacon interval. 2184 * 2185 * Set a large maximum delay to allow for more 2186 * than a single interface. 2187 */ 2188 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2189 iwl_mvm_protect_session(mvm, vif, dur, dur, 2190 5 * dur, false); 2191 } 2192 2193 iwl_mvm_sf_update(mvm, vif, false); 2194 iwl_mvm_power_vif_assoc(mvm, vif); 2195 if (vif->p2p) { 2196 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 2197 iwl_mvm_update_smps(mvm, vif, 2198 IWL_MVM_SMPS_REQ_PROT, 2199 IEEE80211_SMPS_DYNAMIC); 2200 } 2201 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2202 /* 2203 * If update fails - SF might be running in associated 2204 * mode while disassociated - which is forbidden. 2205 */ 2206 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 2207 "Failed to update SF upon disassociation\n"); 2208 2209 /* 2210 * If we get an assert during the connection (after the 2211 * station has been added, but before the vif is set 2212 * to associated), mac80211 will re-add the station and 2213 * then configure the vif. Since the vif is not 2214 * associated, we would remove the station here and 2215 * this would fail the recovery. 2216 */ 2217 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2218 &mvm->status)) { 2219 /* 2220 * Remove AP station now that 2221 * the MAC is unassoc 2222 */ 2223 ret = iwl_mvm_rm_sta_id(mvm, vif, 2224 mvmvif->ap_sta_id); 2225 if (ret) 2226 IWL_ERR(mvm, 2227 "failed to remove AP station\n"); 2228 2229 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 2230 mvm->d0i3_ap_sta_id = 2231 IWL_MVM_INVALID_STA; 2232 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2233 } 2234 2235 /* remove quota for this interface */ 2236 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2237 if (ret) 2238 IWL_ERR(mvm, "failed to update quotas\n"); 2239 2240 if (vif->p2p) 2241 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 2242 2243 /* this will take the cleared BSSID from bss_conf */ 2244 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2245 if (ret) 2246 IWL_ERR(mvm, 2247 "failed to update MAC %pM (clear after unassoc)\n", 2248 vif->addr); 2249 } 2250 2251 /* 2252 * The firmware tracks the MU-MIMO group on its own. 2253 * However, on HW restart we should restore this data. 2254 */ 2255 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2256 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2257 ret = iwl_mvm_update_mu_groups(mvm, vif); 2258 if (ret) 2259 IWL_ERR(mvm, 2260 "failed to update VHT MU_MIMO groups\n"); 2261 } 2262 2263 iwl_mvm_recalc_multicast(mvm); 2264 iwl_mvm_configure_bcast_filter(mvm); 2265 2266 /* reset rssi values */ 2267 mvmvif->bf_data.ave_beacon_signal = 0; 2268 2269 iwl_mvm_bt_coex_vif_change(mvm); 2270 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2271 IEEE80211_SMPS_AUTOMATIC); 2272 if (fw_has_capa(&mvm->fw->ucode_capa, 2273 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2274 iwl_mvm_config_scan(mvm); 2275 } 2276 2277 if (changes & BSS_CHANGED_BEACON_INFO) { 2278 /* 2279 * We received a beacon from the associated AP so 2280 * remove the session protection. 2281 */ 2282 iwl_mvm_stop_session_protection(mvm, vif); 2283 2284 iwl_mvm_sf_update(mvm, vif, false); 2285 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2286 } 2287 2288 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2289 /* 2290 * Send power command on every beacon change, 2291 * because we may have not enabled beacon abort yet. 2292 */ 2293 BSS_CHANGED_BEACON_INFO)) { 2294 ret = iwl_mvm_power_update_mac(mvm); 2295 if (ret) 2296 IWL_ERR(mvm, "failed to update power mode\n"); 2297 } 2298 2299 if (changes & BSS_CHANGED_TXPOWER) { 2300 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2301 bss_conf->txpower); 2302 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2303 } 2304 2305 if (changes & BSS_CHANGED_CQM) { 2306 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2307 /* reset cqm events tracking */ 2308 mvmvif->bf_data.last_cqm_event = 0; 2309 if (mvmvif->bf_data.bf_enabled) { 2310 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2311 if (ret) 2312 IWL_ERR(mvm, 2313 "failed to update CQM thresholds\n"); 2314 } 2315 } 2316 2317 if (changes & BSS_CHANGED_ARP_FILTER) { 2318 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2319 iwl_mvm_configure_bcast_filter(mvm); 2320 } 2321 } 2322 2323 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2324 struct ieee80211_vif *vif) 2325 { 2326 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2327 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2328 int ret; 2329 2330 /* 2331 * iwl_mvm_mac_ctxt_add() might read directly from the device 2332 * (the system time), so make sure it is available. 2333 */ 2334 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2335 if (ret) 2336 return ret; 2337 2338 mutex_lock(&mvm->mutex); 2339 2340 /* Send the beacon template */ 2341 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2342 if (ret) 2343 goto out_unlock; 2344 2345 /* 2346 * Re-calculate the tsf id, as the master-slave relations depend on the 2347 * beacon interval, which was not known when the AP interface was added. 2348 */ 2349 if (vif->type == NL80211_IFTYPE_AP) 2350 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2351 2352 mvmvif->ap_assoc_sta_count = 0; 2353 2354 /* Add the mac context */ 2355 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2356 if (ret) 2357 goto out_unlock; 2358 2359 /* Perform the binding */ 2360 ret = iwl_mvm_binding_add_vif(mvm, vif); 2361 if (ret) 2362 goto out_remove; 2363 2364 /* 2365 * This is not very nice, but the simplest: 2366 * For older FWs adding the mcast sta before the bcast station may 2367 * cause assert 0x2b00. 2368 * This is fixed in later FW so make the order of removal depend on 2369 * the TLV 2370 */ 2371 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2372 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2373 if (ret) 2374 goto out_unbind; 2375 /* 2376 * Send the bcast station. At this stage the TBTT and DTIM time 2377 * events are added and applied to the scheduler 2378 */ 2379 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2380 if (ret) { 2381 iwl_mvm_rm_mcast_sta(mvm, vif); 2382 goto out_unbind; 2383 } 2384 } else { 2385 /* 2386 * Send the bcast station. At this stage the TBTT and DTIM time 2387 * events are added and applied to the scheduler 2388 */ 2389 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2390 if (ret) 2391 goto out_unbind; 2392 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2393 if (ret) { 2394 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2395 goto out_unbind; 2396 } 2397 } 2398 2399 /* must be set before quota calculations */ 2400 mvmvif->ap_ibss_active = true; 2401 2402 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2403 iwl_mvm_vif_set_low_latency(mvmvif, true, 2404 LOW_LATENCY_VIF_TYPE); 2405 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2406 } 2407 2408 /* power updated needs to be done before quotas */ 2409 iwl_mvm_power_update_mac(mvm); 2410 2411 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2412 if (ret) 2413 goto out_quota_failed; 2414 2415 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2416 if (vif->p2p && mvm->p2p_device_vif) 2417 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2418 2419 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2420 2421 iwl_mvm_bt_coex_vif_change(mvm); 2422 2423 /* we don't support TDLS during DCM */ 2424 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2425 iwl_mvm_teardown_tdls_peers(mvm); 2426 2427 goto out_unlock; 2428 2429 out_quota_failed: 2430 iwl_mvm_power_update_mac(mvm); 2431 mvmvif->ap_ibss_active = false; 2432 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2433 iwl_mvm_rm_mcast_sta(mvm, vif); 2434 out_unbind: 2435 iwl_mvm_binding_remove_vif(mvm, vif); 2436 out_remove: 2437 iwl_mvm_mac_ctxt_remove(mvm, vif); 2438 out_unlock: 2439 mutex_unlock(&mvm->mutex); 2440 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2441 return ret; 2442 } 2443 2444 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2445 struct ieee80211_vif *vif) 2446 { 2447 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2448 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2449 2450 iwl_mvm_prepare_mac_removal(mvm, vif); 2451 2452 mutex_lock(&mvm->mutex); 2453 2454 /* Handle AP stop while in CSA */ 2455 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2456 iwl_mvm_remove_time_event(mvm, mvmvif, 2457 &mvmvif->time_event_data); 2458 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2459 mvmvif->csa_countdown = false; 2460 } 2461 2462 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2463 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2464 mvm->csa_tx_block_bcn_timeout = 0; 2465 } 2466 2467 mvmvif->ap_ibss_active = false; 2468 mvm->ap_last_beacon_gp2 = 0; 2469 2470 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2471 iwl_mvm_vif_set_low_latency(mvmvif, false, 2472 LOW_LATENCY_VIF_TYPE); 2473 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2474 } 2475 2476 iwl_mvm_bt_coex_vif_change(mvm); 2477 2478 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2479 2480 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2481 if (vif->p2p && mvm->p2p_device_vif) 2482 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2483 2484 iwl_mvm_update_quotas(mvm, false, NULL); 2485 2486 /* 2487 * This is not very nice, but the simplest: 2488 * For older FWs removing the mcast sta before the bcast station may 2489 * cause assert 0x2b00. 2490 * This is fixed in later FW (which will stop beaconing when removing 2491 * bcast station). 2492 * So make the order of removal depend on the TLV 2493 */ 2494 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2495 iwl_mvm_rm_mcast_sta(mvm, vif); 2496 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2497 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2498 iwl_mvm_rm_mcast_sta(mvm, vif); 2499 iwl_mvm_binding_remove_vif(mvm, vif); 2500 2501 iwl_mvm_power_update_mac(mvm); 2502 2503 iwl_mvm_mac_ctxt_remove(mvm, vif); 2504 2505 kfree(mvmvif->ap_wep_key); 2506 mvmvif->ap_wep_key = NULL; 2507 2508 mutex_unlock(&mvm->mutex); 2509 } 2510 2511 static void 2512 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2513 struct ieee80211_vif *vif, 2514 struct ieee80211_bss_conf *bss_conf, 2515 u32 changes) 2516 { 2517 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2518 2519 /* Changes will be applied when the AP/IBSS is started */ 2520 if (!mvmvif->ap_ibss_active) 2521 return; 2522 2523 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2524 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2525 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2526 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2527 2528 /* Need to send a new beacon template to the FW */ 2529 if (changes & BSS_CHANGED_BEACON && 2530 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2531 IWL_WARN(mvm, "Failed updating beacon data\n"); 2532 2533 if (changes & BSS_CHANGED_TXPOWER) { 2534 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2535 bss_conf->txpower); 2536 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2537 } 2538 } 2539 2540 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2541 struct ieee80211_vif *vif, 2542 struct ieee80211_bss_conf *bss_conf, 2543 u32 changes) 2544 { 2545 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2546 2547 /* 2548 * iwl_mvm_bss_info_changed_station() might call 2549 * iwl_mvm_protect_session(), which reads directly from 2550 * the device (the system time), so make sure it is available. 2551 */ 2552 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2553 return; 2554 2555 mutex_lock(&mvm->mutex); 2556 2557 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2558 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2559 2560 switch (vif->type) { 2561 case NL80211_IFTYPE_STATION: 2562 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2563 break; 2564 case NL80211_IFTYPE_AP: 2565 case NL80211_IFTYPE_ADHOC: 2566 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2567 break; 2568 case NL80211_IFTYPE_MONITOR: 2569 if (changes & BSS_CHANGED_MU_GROUPS) 2570 iwl_mvm_update_mu_groups(mvm, vif); 2571 break; 2572 default: 2573 /* shouldn't happen */ 2574 WARN_ON_ONCE(1); 2575 } 2576 2577 mutex_unlock(&mvm->mutex); 2578 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2579 } 2580 2581 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2582 struct ieee80211_vif *vif, 2583 struct ieee80211_scan_request *hw_req) 2584 { 2585 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2586 int ret; 2587 2588 if (hw_req->req.n_channels == 0 || 2589 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2590 return -EINVAL; 2591 2592 mutex_lock(&mvm->mutex); 2593 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2594 mutex_unlock(&mvm->mutex); 2595 2596 return ret; 2597 } 2598 2599 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2600 struct ieee80211_vif *vif) 2601 { 2602 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2603 2604 mutex_lock(&mvm->mutex); 2605 2606 /* Due to a race condition, it's possible that mac80211 asks 2607 * us to stop a hw_scan when it's already stopped. This can 2608 * happen, for instance, if we stopped the scan ourselves, 2609 * called ieee80211_scan_completed() and the userspace called 2610 * cancel scan scan before ieee80211_scan_work() could run. 2611 * To handle that, simply return if the scan is not running. 2612 */ 2613 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2614 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2615 2616 mutex_unlock(&mvm->mutex); 2617 } 2618 2619 static void 2620 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2621 struct ieee80211_sta *sta, u16 tids, 2622 int num_frames, 2623 enum ieee80211_frame_release_type reason, 2624 bool more_data) 2625 { 2626 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2627 2628 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2629 2630 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2631 tids, more_data, false); 2632 } 2633 2634 static void 2635 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2636 struct ieee80211_sta *sta, u16 tids, 2637 int num_frames, 2638 enum ieee80211_frame_release_type reason, 2639 bool more_data) 2640 { 2641 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2642 2643 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2644 2645 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2646 tids, more_data, true); 2647 } 2648 2649 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2650 enum sta_notify_cmd cmd, 2651 struct ieee80211_sta *sta) 2652 { 2653 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2654 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2655 unsigned long txqs = 0, tids = 0; 2656 int tid; 2657 2658 /* 2659 * If we have TVQM then we get too high queue numbers - luckily 2660 * we really shouldn't get here with that because such hardware 2661 * should have firmware supporting buffer station offload. 2662 */ 2663 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2664 return; 2665 2666 spin_lock_bh(&mvmsta->lock); 2667 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2668 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2669 2670 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2671 continue; 2672 2673 __set_bit(tid_data->txq_id, &txqs); 2674 2675 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2676 continue; 2677 2678 __set_bit(tid, &tids); 2679 } 2680 2681 switch (cmd) { 2682 case STA_NOTIFY_SLEEP: 2683 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2684 ieee80211_sta_set_buffered(sta, tid, true); 2685 2686 if (txqs) 2687 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2688 /* 2689 * The fw updates the STA to be asleep. Tx packets on the Tx 2690 * queues to this station will not be transmitted. The fw will 2691 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2692 */ 2693 break; 2694 case STA_NOTIFY_AWAKE: 2695 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2696 break; 2697 2698 if (txqs) 2699 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2700 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2701 break; 2702 default: 2703 break; 2704 } 2705 spin_unlock_bh(&mvmsta->lock); 2706 } 2707 2708 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2709 struct ieee80211_vif *vif, 2710 enum sta_notify_cmd cmd, 2711 struct ieee80211_sta *sta) 2712 { 2713 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2714 } 2715 2716 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2717 { 2718 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2719 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2720 struct ieee80211_sta *sta; 2721 struct iwl_mvm_sta *mvmsta; 2722 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2723 2724 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2725 return; 2726 2727 rcu_read_lock(); 2728 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2729 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2730 rcu_read_unlock(); 2731 return; 2732 } 2733 2734 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2735 2736 if (!mvmsta->vif || 2737 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2738 rcu_read_unlock(); 2739 return; 2740 } 2741 2742 if (mvmsta->sleeping != sleeping) { 2743 mvmsta->sleeping = sleeping; 2744 __iwl_mvm_mac_sta_notify(mvm->hw, 2745 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2746 sta); 2747 ieee80211_sta_ps_transition(sta, sleeping); 2748 } 2749 2750 if (sleeping) { 2751 switch (notif->type) { 2752 case IWL_MVM_PM_EVENT_AWAKE: 2753 case IWL_MVM_PM_EVENT_ASLEEP: 2754 break; 2755 case IWL_MVM_PM_EVENT_UAPSD: 2756 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2757 break; 2758 case IWL_MVM_PM_EVENT_PS_POLL: 2759 ieee80211_sta_pspoll(sta); 2760 break; 2761 default: 2762 break; 2763 } 2764 } 2765 2766 rcu_read_unlock(); 2767 } 2768 2769 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2770 struct ieee80211_vif *vif, 2771 struct ieee80211_sta *sta) 2772 { 2773 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2774 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2775 2776 /* 2777 * This is called before mac80211 does RCU synchronisation, 2778 * so here we already invalidate our internal RCU-protected 2779 * station pointer. The rest of the code will thus no longer 2780 * be able to find the station this way, and we don't rely 2781 * on further RCU synchronisation after the sta_state() 2782 * callback deleted the station. 2783 */ 2784 mutex_lock(&mvm->mutex); 2785 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2786 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2787 ERR_PTR(-ENOENT)); 2788 2789 mutex_unlock(&mvm->mutex); 2790 } 2791 2792 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2793 const u8 *bssid) 2794 { 2795 int i; 2796 2797 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2798 struct iwl_mvm_tcm_mac *mdata; 2799 2800 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2801 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2802 mdata->opened_rx_ba_sessions = false; 2803 } 2804 2805 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2806 return; 2807 2808 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2809 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2810 return; 2811 } 2812 2813 if (!vif->p2p && 2814 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2815 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2816 return; 2817 } 2818 2819 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2820 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2821 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2822 return; 2823 } 2824 } 2825 2826 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2827 } 2828 2829 static void 2830 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2831 struct ieee80211_vif *vif, u8 *peer_addr, 2832 enum nl80211_tdls_operation action) 2833 { 2834 struct iwl_fw_dbg_trigger_tlv *trig; 2835 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2836 2837 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 2838 FW_DBG_TRIGGER_TDLS); 2839 if (!trig) 2840 return; 2841 2842 tdls_trig = (void *)trig->data; 2843 2844 if (!(tdls_trig->action_bitmap & BIT(action))) 2845 return; 2846 2847 if (tdls_trig->peer_mode && 2848 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2849 return; 2850 2851 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2852 "TDLS event occurred, peer %pM, action %d", 2853 peer_addr, action); 2854 } 2855 2856 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2857 struct iwl_mvm_sta *mvm_sta) 2858 { 2859 struct iwl_mvm_tid_data *tid_data; 2860 struct sk_buff *skb; 2861 int i; 2862 2863 spin_lock_bh(&mvm_sta->lock); 2864 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2865 tid_data = &mvm_sta->tid_data[i]; 2866 2867 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) { 2868 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 2869 2870 /* 2871 * The first deferred frame should've stopped the MAC 2872 * queues, so we should never get a second deferred 2873 * frame for the RA/TID. 2874 */ 2875 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue)); 2876 ieee80211_free_txskb(mvm->hw, skb); 2877 } 2878 } 2879 spin_unlock_bh(&mvm_sta->lock); 2880 } 2881 2882 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2883 struct ieee80211_vif *vif, 2884 struct ieee80211_sta *sta, 2885 enum ieee80211_sta_state old_state, 2886 enum ieee80211_sta_state new_state) 2887 { 2888 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2889 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2890 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2891 int ret; 2892 2893 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2894 sta->addr, old_state, new_state); 2895 2896 /* this would be a mac80211 bug ... but don't crash */ 2897 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2898 return -EINVAL; 2899 2900 /* 2901 * If we are in a STA removal flow and in DQA mode: 2902 * 2903 * This is after the sync_rcu part, so the queues have already been 2904 * flushed. No more TXs on their way in mac80211's path, and no more in 2905 * the queues. 2906 * Also, we won't be getting any new TX frames for this station. 2907 * What we might have are deferred TX frames that need to be taken care 2908 * of. 2909 * 2910 * Drop any still-queued deferred-frame before removing the STA, and 2911 * make sure the worker is no longer handling frames for this STA. 2912 */ 2913 if (old_state == IEEE80211_STA_NONE && 2914 new_state == IEEE80211_STA_NOTEXIST) { 2915 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2916 flush_work(&mvm->add_stream_wk); 2917 2918 /* 2919 * No need to make sure deferred TX indication is off since the 2920 * worker will already remove it if it was on 2921 */ 2922 } 2923 2924 mutex_lock(&mvm->mutex); 2925 /* track whether or not the station is associated */ 2926 mvm_sta->sta_state = new_state; 2927 2928 if (old_state == IEEE80211_STA_NOTEXIST && 2929 new_state == IEEE80211_STA_NONE) { 2930 /* 2931 * Firmware bug - it'll crash if the beacon interval is less 2932 * than 16. We can't avoid connecting at all, so refuse the 2933 * station state change, this will cause mac80211 to abandon 2934 * attempts to connect to this AP, and eventually wpa_s will 2935 * blacklist the AP... 2936 */ 2937 if (vif->type == NL80211_IFTYPE_STATION && 2938 vif->bss_conf.beacon_int < 16) { 2939 IWL_ERR(mvm, 2940 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2941 sta->addr, vif->bss_conf.beacon_int); 2942 ret = -EINVAL; 2943 goto out_unlock; 2944 } 2945 2946 if (sta->tdls && 2947 (vif->p2p || 2948 iwl_mvm_tdls_sta_count(mvm, NULL) == 2949 IWL_MVM_TDLS_STA_COUNT || 2950 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2951 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2952 ret = -EBUSY; 2953 goto out_unlock; 2954 } 2955 2956 ret = iwl_mvm_add_sta(mvm, vif, sta); 2957 if (sta->tdls && ret == 0) { 2958 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2959 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2960 NL80211_TDLS_SETUP); 2961 } 2962 } else if (old_state == IEEE80211_STA_NONE && 2963 new_state == IEEE80211_STA_AUTH) { 2964 /* 2965 * EBS may be disabled due to previous failures reported by FW. 2966 * Reset EBS status here assuming environment has been changed. 2967 */ 2968 mvm->last_ebs_successful = true; 2969 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2970 ret = 0; 2971 } else if (old_state == IEEE80211_STA_AUTH && 2972 new_state == IEEE80211_STA_ASSOC) { 2973 if (vif->type == NL80211_IFTYPE_AP) { 2974 mvmvif->ap_assoc_sta_count++; 2975 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2976 if (vif->bss_conf.he_support && 2977 !iwlwifi_mod_params.disable_11ax) 2978 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 2979 } 2980 2981 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2982 false); 2983 ret = iwl_mvm_update_sta(mvm, vif, sta); 2984 } else if (old_state == IEEE80211_STA_ASSOC && 2985 new_state == IEEE80211_STA_AUTHORIZED) { 2986 2987 /* we don't support TDLS during DCM */ 2988 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2989 iwl_mvm_teardown_tdls_peers(mvm); 2990 2991 if (sta->tdls) 2992 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2993 NL80211_TDLS_ENABLE_LINK); 2994 2995 /* enable beacon filtering */ 2996 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2997 2998 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2999 true); 3000 3001 /* if wep is used, need to set the key for the station now */ 3002 if (vif->type == NL80211_IFTYPE_AP && mvmvif->ap_wep_key) 3003 ret = iwl_mvm_set_sta_key(mvm, vif, sta, 3004 mvmvif->ap_wep_key, 3005 STA_KEY_IDX_INVALID); 3006 else 3007 ret = 0; 3008 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3009 new_state == IEEE80211_STA_ASSOC) { 3010 /* disable beacon filtering */ 3011 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 3012 ret = 0; 3013 } else if (old_state == IEEE80211_STA_ASSOC && 3014 new_state == IEEE80211_STA_AUTH) { 3015 if (vif->type == NL80211_IFTYPE_AP) { 3016 mvmvif->ap_assoc_sta_count--; 3017 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3018 } 3019 ret = 0; 3020 } else if (old_state == IEEE80211_STA_AUTH && 3021 new_state == IEEE80211_STA_NONE) { 3022 ret = 0; 3023 } else if (old_state == IEEE80211_STA_NONE && 3024 new_state == IEEE80211_STA_NOTEXIST) { 3025 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3026 if (sta->tdls) { 3027 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3028 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3029 NL80211_TDLS_DISABLE_LINK); 3030 } 3031 } else { 3032 ret = -EIO; 3033 } 3034 out_unlock: 3035 mutex_unlock(&mvm->mutex); 3036 3037 if (sta->tdls && ret == 0) { 3038 if (old_state == IEEE80211_STA_NOTEXIST && 3039 new_state == IEEE80211_STA_NONE) 3040 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3041 else if (old_state == IEEE80211_STA_NONE && 3042 new_state == IEEE80211_STA_NOTEXIST) 3043 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3044 } 3045 3046 return ret; 3047 } 3048 3049 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3050 { 3051 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3052 3053 mvm->rts_threshold = value; 3054 3055 return 0; 3056 } 3057 3058 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3059 struct ieee80211_vif *vif, 3060 struct ieee80211_sta *sta, u32 changed) 3061 { 3062 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3063 3064 if (vif->type == NL80211_IFTYPE_STATION && 3065 changed & IEEE80211_RC_NSS_CHANGED) 3066 iwl_mvm_sf_update(mvm, vif, false); 3067 } 3068 3069 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3070 struct ieee80211_vif *vif, u16 ac, 3071 const struct ieee80211_tx_queue_params *params) 3072 { 3073 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3074 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3075 3076 mvmvif->queue_params[ac] = *params; 3077 3078 /* 3079 * No need to update right away, we'll get BSS_CHANGED_QOS 3080 * The exception is P2P_DEVICE interface which needs immediate update. 3081 */ 3082 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3083 int ret; 3084 3085 mutex_lock(&mvm->mutex); 3086 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3087 mutex_unlock(&mvm->mutex); 3088 return ret; 3089 } 3090 return 0; 3091 } 3092 3093 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3094 struct ieee80211_vif *vif, 3095 u16 req_duration) 3096 { 3097 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3098 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3099 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3100 3101 /* 3102 * iwl_mvm_protect_session() reads directly from the device 3103 * (the system time), so make sure it is available. 3104 */ 3105 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 3106 return; 3107 3108 if (req_duration > duration) 3109 duration = req_duration; 3110 3111 mutex_lock(&mvm->mutex); 3112 /* Try really hard to protect the session and hear a beacon */ 3113 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 3114 mutex_unlock(&mvm->mutex); 3115 3116 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 3117 } 3118 3119 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3120 struct ieee80211_vif *vif, 3121 struct cfg80211_sched_scan_request *req, 3122 struct ieee80211_scan_ies *ies) 3123 { 3124 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3125 3126 int ret; 3127 3128 mutex_lock(&mvm->mutex); 3129 3130 if (!vif->bss_conf.idle) { 3131 ret = -EBUSY; 3132 goto out; 3133 } 3134 3135 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3136 3137 out: 3138 mutex_unlock(&mvm->mutex); 3139 return ret; 3140 } 3141 3142 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3143 struct ieee80211_vif *vif) 3144 { 3145 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3146 int ret; 3147 3148 mutex_lock(&mvm->mutex); 3149 3150 /* Due to a race condition, it's possible that mac80211 asks 3151 * us to stop a sched_scan when it's already stopped. This 3152 * can happen, for instance, if we stopped the scan ourselves, 3153 * called ieee80211_sched_scan_stopped() and the userspace called 3154 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3155 * could run. To handle this, simply return if the scan is 3156 * not running. 3157 */ 3158 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3159 mutex_unlock(&mvm->mutex); 3160 return 0; 3161 } 3162 3163 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3164 mutex_unlock(&mvm->mutex); 3165 iwl_mvm_wait_for_async_handlers(mvm); 3166 3167 return ret; 3168 } 3169 3170 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3171 enum set_key_cmd cmd, 3172 struct ieee80211_vif *vif, 3173 struct ieee80211_sta *sta, 3174 struct ieee80211_key_conf *key) 3175 { 3176 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3177 struct iwl_mvm_sta *mvmsta; 3178 struct iwl_mvm_key_pn *ptk_pn; 3179 int keyidx = key->keyidx; 3180 int ret; 3181 u8 key_offset; 3182 3183 if (iwlwifi_mod_params.swcrypto) { 3184 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 3185 return -EOPNOTSUPP; 3186 } 3187 3188 switch (key->cipher) { 3189 case WLAN_CIPHER_SUITE_TKIP: 3190 if (!mvm->trans->cfg->gen2) { 3191 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3192 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3193 } else if (vif->type == NL80211_IFTYPE_STATION) { 3194 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3195 } else { 3196 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3197 return -EOPNOTSUPP; 3198 } 3199 break; 3200 case WLAN_CIPHER_SUITE_CCMP: 3201 case WLAN_CIPHER_SUITE_GCMP: 3202 case WLAN_CIPHER_SUITE_GCMP_256: 3203 if (!iwl_mvm_has_new_tx_api(mvm)) 3204 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3205 break; 3206 case WLAN_CIPHER_SUITE_AES_CMAC: 3207 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3208 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3209 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3210 break; 3211 case WLAN_CIPHER_SUITE_WEP40: 3212 case WLAN_CIPHER_SUITE_WEP104: 3213 if (vif->type == NL80211_IFTYPE_AP) { 3214 struct iwl_mvm_vif *mvmvif = 3215 iwl_mvm_vif_from_mac80211(vif); 3216 3217 mvmvif->ap_wep_key = kmemdup(key, 3218 sizeof(*key) + key->keylen, 3219 GFP_KERNEL); 3220 if (!mvmvif->ap_wep_key) 3221 return -ENOMEM; 3222 } 3223 3224 if (vif->type != NL80211_IFTYPE_STATION) 3225 return 0; 3226 break; 3227 default: 3228 /* currently FW supports only one optional cipher scheme */ 3229 if (hw->n_cipher_schemes && 3230 hw->cipher_schemes->cipher == key->cipher) 3231 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3232 else 3233 return -EOPNOTSUPP; 3234 } 3235 3236 mutex_lock(&mvm->mutex); 3237 3238 switch (cmd) { 3239 case SET_KEY: 3240 if ((vif->type == NL80211_IFTYPE_ADHOC || 3241 vif->type == NL80211_IFTYPE_AP) && !sta) { 3242 /* 3243 * GTK on AP interface is a TX-only key, return 0; 3244 * on IBSS they're per-station and because we're lazy 3245 * we don't support them for RX, so do the same. 3246 * CMAC/GMAC in AP/IBSS modes must be done in software. 3247 */ 3248 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3249 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3250 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3251 ret = -EOPNOTSUPP; 3252 else 3253 ret = 0; 3254 3255 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3256 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3257 !iwl_mvm_has_new_tx_api(mvm)) { 3258 key->hw_key_idx = STA_KEY_IDX_INVALID; 3259 break; 3260 } 3261 } 3262 3263 /* During FW restart, in order to restore the state as it was, 3264 * don't try to reprogram keys we previously failed for. 3265 */ 3266 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3267 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3268 IWL_DEBUG_MAC80211(mvm, 3269 "skip invalid idx key programming during restart\n"); 3270 ret = 0; 3271 break; 3272 } 3273 3274 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3275 sta && iwl_mvm_has_new_rx_api(mvm) && 3276 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3277 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3278 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3279 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3280 struct ieee80211_key_seq seq; 3281 int tid, q; 3282 3283 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3284 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3285 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3286 mvm->trans->num_rx_queues), 3287 GFP_KERNEL); 3288 if (!ptk_pn) { 3289 ret = -ENOMEM; 3290 break; 3291 } 3292 3293 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3294 ieee80211_get_key_rx_seq(key, tid, &seq); 3295 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3296 memcpy(ptk_pn->q[q].pn[tid], 3297 seq.ccmp.pn, 3298 IEEE80211_CCMP_PN_LEN); 3299 } 3300 3301 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3302 } 3303 3304 /* in HW restart reuse the index, otherwise request a new one */ 3305 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3306 key_offset = key->hw_key_idx; 3307 else 3308 key_offset = STA_KEY_IDX_INVALID; 3309 3310 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3311 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3312 if (ret) { 3313 IWL_WARN(mvm, "set key failed\n"); 3314 /* 3315 * can't add key for RX, but we don't need it 3316 * in the device for TX so still return 0 3317 */ 3318 key->hw_key_idx = STA_KEY_IDX_INVALID; 3319 ret = 0; 3320 } 3321 3322 break; 3323 case DISABLE_KEY: 3324 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3325 ret = 0; 3326 break; 3327 } 3328 3329 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3330 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3331 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3332 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3333 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3334 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3335 ptk_pn = rcu_dereference_protected( 3336 mvmsta->ptk_pn[keyidx], 3337 lockdep_is_held(&mvm->mutex)); 3338 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3339 if (ptk_pn) 3340 kfree_rcu(ptk_pn, rcu_head); 3341 } 3342 3343 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3344 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3345 break; 3346 default: 3347 ret = -EINVAL; 3348 } 3349 3350 mutex_unlock(&mvm->mutex); 3351 return ret; 3352 } 3353 3354 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3355 struct ieee80211_vif *vif, 3356 struct ieee80211_key_conf *keyconf, 3357 struct ieee80211_sta *sta, 3358 u32 iv32, u16 *phase1key) 3359 { 3360 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3361 3362 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3363 return; 3364 3365 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3366 } 3367 3368 3369 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3370 struct iwl_rx_packet *pkt, void *data) 3371 { 3372 struct iwl_mvm *mvm = 3373 container_of(notif_wait, struct iwl_mvm, notif_wait); 3374 struct iwl_hs20_roc_res *resp; 3375 int resp_len = iwl_rx_packet_payload_len(pkt); 3376 struct iwl_mvm_time_event_data *te_data = data; 3377 3378 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3379 return true; 3380 3381 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3382 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3383 return true; 3384 } 3385 3386 resp = (void *)pkt->data; 3387 3388 IWL_DEBUG_TE(mvm, 3389 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 3390 resp->status, resp->event_unique_id); 3391 3392 te_data->uid = le32_to_cpu(resp->event_unique_id); 3393 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3394 te_data->uid); 3395 3396 spin_lock_bh(&mvm->time_event_lock); 3397 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3398 spin_unlock_bh(&mvm->time_event_lock); 3399 3400 return true; 3401 } 3402 3403 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3404 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3405 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3406 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3407 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3408 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3409 struct ieee80211_channel *channel, 3410 struct ieee80211_vif *vif, 3411 int duration) 3412 { 3413 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3414 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3415 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3416 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3417 struct iwl_notification_wait wait_time_event; 3418 u32 dtim_interval = vif->bss_conf.dtim_period * 3419 vif->bss_conf.beacon_int; 3420 u32 req_dur, delay; 3421 struct iwl_hs20_roc_req aux_roc_req = { 3422 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3423 .id_and_color = 3424 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3425 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3426 /* Set the channel info data */ 3427 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3428 PHY_BAND_24 : PHY_BAND_5, 3429 .channel_info.channel = channel->hw_value, 3430 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3431 /* Set the time and duration */ 3432 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3433 }; 3434 3435 delay = AUX_ROC_MIN_DELAY; 3436 req_dur = MSEC_TO_TU(duration); 3437 3438 /* 3439 * If we are associated we want the delay time to be at least one 3440 * dtim interval so that the FW can wait until after the DTIM and 3441 * then start the time event, this will potentially allow us to 3442 * remain off-channel for the max duration. 3443 * Since we want to use almost a whole dtim interval we would also 3444 * like the delay to be for 2-3 dtim intervals, in case there are 3445 * other time events with higher priority. 3446 */ 3447 if (vif->bss_conf.assoc) { 3448 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3449 /* We cannot remain off-channel longer than the DTIM interval */ 3450 if (dtim_interval <= req_dur) { 3451 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3452 if (req_dur <= AUX_ROC_MIN_DURATION) 3453 req_dur = dtim_interval - 3454 AUX_ROC_MIN_SAFETY_BUFFER; 3455 } 3456 } 3457 3458 aux_roc_req.duration = cpu_to_le32(req_dur); 3459 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3460 3461 IWL_DEBUG_TE(mvm, 3462 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3463 channel->hw_value, req_dur, duration, delay, 3464 dtim_interval); 3465 /* Set the node address */ 3466 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3467 3468 lockdep_assert_held(&mvm->mutex); 3469 3470 spin_lock_bh(&mvm->time_event_lock); 3471 3472 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3473 spin_unlock_bh(&mvm->time_event_lock); 3474 return -EIO; 3475 } 3476 3477 te_data->vif = vif; 3478 te_data->duration = duration; 3479 te_data->id = HOT_SPOT_CMD; 3480 3481 spin_unlock_bh(&mvm->time_event_lock); 3482 3483 /* 3484 * Use a notification wait, which really just processes the 3485 * command response and doesn't wait for anything, in order 3486 * to be able to process the response and get the UID inside 3487 * the RX path. Using CMD_WANT_SKB doesn't work because it 3488 * stores the buffer and then wakes up this thread, by which 3489 * time another notification (that the time event started) 3490 * might already be processed unsuccessfully. 3491 */ 3492 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3493 time_event_response, 3494 ARRAY_SIZE(time_event_response), 3495 iwl_mvm_rx_aux_roc, te_data); 3496 3497 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3498 &aux_roc_req); 3499 3500 if (res) { 3501 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3502 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3503 goto out_clear_te; 3504 } 3505 3506 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3507 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3508 /* should never fail */ 3509 WARN_ON_ONCE(res); 3510 3511 if (res) { 3512 out_clear_te: 3513 spin_lock_bh(&mvm->time_event_lock); 3514 iwl_mvm_te_clear_data(mvm, te_data); 3515 spin_unlock_bh(&mvm->time_event_lock); 3516 } 3517 3518 return res; 3519 } 3520 3521 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3522 struct ieee80211_vif *vif, 3523 struct ieee80211_channel *channel, 3524 int duration, 3525 enum ieee80211_roc_type type) 3526 { 3527 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3528 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3529 struct cfg80211_chan_def chandef; 3530 struct iwl_mvm_phy_ctxt *phy_ctxt; 3531 int ret, i; 3532 3533 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3534 duration, type); 3535 3536 /* 3537 * Flush the done work, just in case it's still pending, so that 3538 * the work it does can complete and we can accept new frames. 3539 */ 3540 flush_work(&mvm->roc_done_wk); 3541 3542 mutex_lock(&mvm->mutex); 3543 3544 switch (vif->type) { 3545 case NL80211_IFTYPE_STATION: 3546 if (fw_has_capa(&mvm->fw->ucode_capa, 3547 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3548 /* Use aux roc framework (HS20) */ 3549 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3550 vif, duration); 3551 goto out_unlock; 3552 } 3553 IWL_ERR(mvm, "hotspot not supported\n"); 3554 ret = -EINVAL; 3555 goto out_unlock; 3556 case NL80211_IFTYPE_P2P_DEVICE: 3557 /* handle below */ 3558 break; 3559 default: 3560 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3561 ret = -EINVAL; 3562 goto out_unlock; 3563 } 3564 3565 for (i = 0; i < NUM_PHY_CTX; i++) { 3566 phy_ctxt = &mvm->phy_ctxts[i]; 3567 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3568 continue; 3569 3570 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3571 /* 3572 * Unbind the P2P_DEVICE from the current PHY context, 3573 * and if the PHY context is not used remove it. 3574 */ 3575 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3576 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3577 goto out_unlock; 3578 3579 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3580 3581 /* Bind the P2P_DEVICE to the current PHY Context */ 3582 mvmvif->phy_ctxt = phy_ctxt; 3583 3584 ret = iwl_mvm_binding_add_vif(mvm, vif); 3585 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3586 goto out_unlock; 3587 3588 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3589 goto schedule_time_event; 3590 } 3591 } 3592 3593 /* Need to update the PHY context only if the ROC channel changed */ 3594 if (channel == mvmvif->phy_ctxt->channel) 3595 goto schedule_time_event; 3596 3597 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3598 3599 /* 3600 * Change the PHY context configuration as it is currently referenced 3601 * only by the P2P Device MAC 3602 */ 3603 if (mvmvif->phy_ctxt->ref == 1) { 3604 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3605 &chandef, 1, 1); 3606 if (ret) 3607 goto out_unlock; 3608 } else { 3609 /* 3610 * The PHY context is shared with other MACs. Need to remove the 3611 * P2P Device from the binding, allocate an new PHY context and 3612 * create a new binding 3613 */ 3614 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3615 if (!phy_ctxt) { 3616 ret = -ENOSPC; 3617 goto out_unlock; 3618 } 3619 3620 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3621 1, 1); 3622 if (ret) { 3623 IWL_ERR(mvm, "Failed to change PHY context\n"); 3624 goto out_unlock; 3625 } 3626 3627 /* Unbind the P2P_DEVICE from the current PHY context */ 3628 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3629 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3630 goto out_unlock; 3631 3632 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3633 3634 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3635 mvmvif->phy_ctxt = phy_ctxt; 3636 3637 ret = iwl_mvm_binding_add_vif(mvm, vif); 3638 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3639 goto out_unlock; 3640 3641 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3642 } 3643 3644 schedule_time_event: 3645 /* Schedule the time events */ 3646 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3647 3648 out_unlock: 3649 mutex_unlock(&mvm->mutex); 3650 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3651 return ret; 3652 } 3653 3654 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3655 { 3656 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3657 3658 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3659 3660 mutex_lock(&mvm->mutex); 3661 iwl_mvm_stop_roc(mvm); 3662 mutex_unlock(&mvm->mutex); 3663 3664 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3665 return 0; 3666 } 3667 3668 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3669 struct ieee80211_chanctx_conf *ctx) 3670 { 3671 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3672 struct iwl_mvm_phy_ctxt *phy_ctxt; 3673 int ret; 3674 3675 lockdep_assert_held(&mvm->mutex); 3676 3677 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3678 3679 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3680 if (!phy_ctxt) { 3681 ret = -ENOSPC; 3682 goto out; 3683 } 3684 3685 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3686 ctx->rx_chains_static, 3687 ctx->rx_chains_dynamic); 3688 if (ret) { 3689 IWL_ERR(mvm, "Failed to add PHY context\n"); 3690 goto out; 3691 } 3692 3693 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3694 *phy_ctxt_id = phy_ctxt->id; 3695 out: 3696 return ret; 3697 } 3698 3699 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3700 struct ieee80211_chanctx_conf *ctx) 3701 { 3702 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3703 int ret; 3704 3705 mutex_lock(&mvm->mutex); 3706 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3707 mutex_unlock(&mvm->mutex); 3708 3709 return ret; 3710 } 3711 3712 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3713 struct ieee80211_chanctx_conf *ctx) 3714 { 3715 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3716 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3717 3718 lockdep_assert_held(&mvm->mutex); 3719 3720 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3721 } 3722 3723 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3724 struct ieee80211_chanctx_conf *ctx) 3725 { 3726 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3727 3728 mutex_lock(&mvm->mutex); 3729 __iwl_mvm_remove_chanctx(mvm, ctx); 3730 mutex_unlock(&mvm->mutex); 3731 } 3732 3733 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3734 struct ieee80211_chanctx_conf *ctx, 3735 u32 changed) 3736 { 3737 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3738 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3739 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3740 3741 if (WARN_ONCE((phy_ctxt->ref > 1) && 3742 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3743 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3744 IEEE80211_CHANCTX_CHANGE_RADAR | 3745 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3746 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3747 phy_ctxt->ref, changed)) 3748 return; 3749 3750 mutex_lock(&mvm->mutex); 3751 3752 /* we are only changing the min_width, may be a noop */ 3753 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 3754 if (phy_ctxt->width == ctx->min_def.width) 3755 goto out_unlock; 3756 3757 /* we are just toggling between 20_NOHT and 20 */ 3758 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 3759 ctx->min_def.width <= NL80211_CHAN_WIDTH_20) 3760 goto out_unlock; 3761 } 3762 3763 iwl_mvm_bt_coex_vif_change(mvm); 3764 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3765 ctx->rx_chains_static, 3766 ctx->rx_chains_dynamic); 3767 3768 out_unlock: 3769 mutex_unlock(&mvm->mutex); 3770 } 3771 3772 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3773 struct ieee80211_vif *vif, 3774 struct ieee80211_chanctx_conf *ctx, 3775 bool switching_chanctx) 3776 { 3777 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3778 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3779 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3780 int ret; 3781 3782 lockdep_assert_held(&mvm->mutex); 3783 3784 mvmvif->phy_ctxt = phy_ctxt; 3785 3786 switch (vif->type) { 3787 case NL80211_IFTYPE_AP: 3788 /* only needed if we're switching chanctx (i.e. during CSA) */ 3789 if (switching_chanctx) { 3790 mvmvif->ap_ibss_active = true; 3791 break; 3792 } 3793 case NL80211_IFTYPE_ADHOC: 3794 /* 3795 * The AP binding flow is handled as part of the start_ap flow 3796 * (in bss_info_changed), similarly for IBSS. 3797 */ 3798 ret = 0; 3799 goto out; 3800 case NL80211_IFTYPE_STATION: 3801 mvmvif->csa_bcn_pending = false; 3802 break; 3803 case NL80211_IFTYPE_MONITOR: 3804 /* always disable PS when a monitor interface is active */ 3805 mvmvif->ps_disabled = true; 3806 break; 3807 default: 3808 ret = -EINVAL; 3809 goto out; 3810 } 3811 3812 ret = iwl_mvm_binding_add_vif(mvm, vif); 3813 if (ret) 3814 goto out; 3815 3816 /* 3817 * Power state must be updated before quotas, 3818 * otherwise fw will complain. 3819 */ 3820 iwl_mvm_power_update_mac(mvm); 3821 3822 /* Setting the quota at this stage is only required for monitor 3823 * interfaces. For the other types, the bss_info changed flow 3824 * will handle quota settings. 3825 */ 3826 if (vif->type == NL80211_IFTYPE_MONITOR) { 3827 mvmvif->monitor_active = true; 3828 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3829 if (ret) 3830 goto out_remove_binding; 3831 3832 ret = iwl_mvm_add_snif_sta(mvm, vif); 3833 if (ret) 3834 goto out_remove_binding; 3835 3836 } 3837 3838 /* Handle binding during CSA */ 3839 if (vif->type == NL80211_IFTYPE_AP) { 3840 iwl_mvm_update_quotas(mvm, false, NULL); 3841 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3842 } 3843 3844 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3845 u32 duration = 3 * vif->bss_conf.beacon_int; 3846 3847 /* iwl_mvm_protect_session() reads directly from the 3848 * device (the system time), so make sure it is 3849 * available. 3850 */ 3851 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3852 if (ret) 3853 goto out_remove_binding; 3854 3855 /* Protect the session to make sure we hear the first 3856 * beacon on the new channel. 3857 */ 3858 mvmvif->csa_bcn_pending = true; 3859 iwl_mvm_protect_session(mvm, vif, duration, duration, 3860 vif->bss_conf.beacon_int / 2, 3861 true); 3862 3863 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3864 3865 iwl_mvm_update_quotas(mvm, false, NULL); 3866 } 3867 3868 goto out; 3869 3870 out_remove_binding: 3871 iwl_mvm_binding_remove_vif(mvm, vif); 3872 iwl_mvm_power_update_mac(mvm); 3873 out: 3874 if (ret) 3875 mvmvif->phy_ctxt = NULL; 3876 return ret; 3877 } 3878 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3879 struct ieee80211_vif *vif, 3880 struct ieee80211_chanctx_conf *ctx) 3881 { 3882 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3883 int ret; 3884 3885 mutex_lock(&mvm->mutex); 3886 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3887 mutex_unlock(&mvm->mutex); 3888 3889 return ret; 3890 } 3891 3892 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3893 struct ieee80211_vif *vif, 3894 struct ieee80211_chanctx_conf *ctx, 3895 bool switching_chanctx) 3896 { 3897 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3898 struct ieee80211_vif *disabled_vif = NULL; 3899 3900 lockdep_assert_held(&mvm->mutex); 3901 3902 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3903 3904 switch (vif->type) { 3905 case NL80211_IFTYPE_ADHOC: 3906 goto out; 3907 case NL80211_IFTYPE_MONITOR: 3908 mvmvif->monitor_active = false; 3909 mvmvif->ps_disabled = false; 3910 iwl_mvm_rm_snif_sta(mvm, vif); 3911 break; 3912 case NL80211_IFTYPE_AP: 3913 /* This part is triggered only during CSA */ 3914 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3915 goto out; 3916 3917 mvmvif->csa_countdown = false; 3918 3919 /* Set CS bit on all the stations */ 3920 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3921 3922 /* Save blocked iface, the timeout is set on the next beacon */ 3923 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3924 3925 mvmvif->ap_ibss_active = false; 3926 break; 3927 case NL80211_IFTYPE_STATION: 3928 if (!switching_chanctx) 3929 break; 3930 3931 disabled_vif = vif; 3932 3933 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3934 break; 3935 default: 3936 break; 3937 } 3938 3939 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3940 iwl_mvm_binding_remove_vif(mvm, vif); 3941 3942 out: 3943 mvmvif->phy_ctxt = NULL; 3944 iwl_mvm_power_update_mac(mvm); 3945 } 3946 3947 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3948 struct ieee80211_vif *vif, 3949 struct ieee80211_chanctx_conf *ctx) 3950 { 3951 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3952 3953 mutex_lock(&mvm->mutex); 3954 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3955 mutex_unlock(&mvm->mutex); 3956 } 3957 3958 static int 3959 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3960 struct ieee80211_vif_chanctx_switch *vifs) 3961 { 3962 int ret; 3963 3964 mutex_lock(&mvm->mutex); 3965 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3966 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3967 3968 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3969 if (ret) { 3970 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3971 goto out_reassign; 3972 } 3973 3974 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3975 true); 3976 if (ret) { 3977 IWL_ERR(mvm, 3978 "failed to assign new_ctx during channel switch\n"); 3979 goto out_remove; 3980 } 3981 3982 /* we don't support TDLS during DCM - can be caused by channel switch */ 3983 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3984 iwl_mvm_teardown_tdls_peers(mvm); 3985 3986 goto out; 3987 3988 out_remove: 3989 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3990 3991 out_reassign: 3992 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3993 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3994 goto out_restart; 3995 } 3996 3997 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3998 true)) { 3999 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4000 goto out_restart; 4001 } 4002 4003 goto out; 4004 4005 out_restart: 4006 /* things keep failing, better restart the hw */ 4007 iwl_mvm_nic_restart(mvm, false); 4008 4009 out: 4010 mutex_unlock(&mvm->mutex); 4011 4012 return ret; 4013 } 4014 4015 static int 4016 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4017 struct ieee80211_vif_chanctx_switch *vifs) 4018 { 4019 int ret; 4020 4021 mutex_lock(&mvm->mutex); 4022 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4023 4024 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4025 true); 4026 if (ret) { 4027 IWL_ERR(mvm, 4028 "failed to assign new_ctx during channel switch\n"); 4029 goto out_reassign; 4030 } 4031 4032 goto out; 4033 4034 out_reassign: 4035 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4036 true)) { 4037 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4038 goto out_restart; 4039 } 4040 4041 goto out; 4042 4043 out_restart: 4044 /* things keep failing, better restart the hw */ 4045 iwl_mvm_nic_restart(mvm, false); 4046 4047 out: 4048 mutex_unlock(&mvm->mutex); 4049 4050 return ret; 4051 } 4052 4053 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4054 struct ieee80211_vif_chanctx_switch *vifs, 4055 int n_vifs, 4056 enum ieee80211_chanctx_switch_mode mode) 4057 { 4058 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4059 int ret; 4060 4061 /* we only support a single-vif right now */ 4062 if (n_vifs > 1) 4063 return -EOPNOTSUPP; 4064 4065 switch (mode) { 4066 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4067 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4068 break; 4069 case CHANCTX_SWMODE_REASSIGN_VIF: 4070 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4071 break; 4072 default: 4073 ret = -EOPNOTSUPP; 4074 break; 4075 } 4076 4077 return ret; 4078 } 4079 4080 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4081 { 4082 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4083 4084 return mvm->ibss_manager; 4085 } 4086 4087 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4088 struct ieee80211_sta *sta, 4089 bool set) 4090 { 4091 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4092 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4093 4094 if (!mvm_sta || !mvm_sta->vif) { 4095 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4096 return -EINVAL; 4097 } 4098 4099 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4100 } 4101 4102 #ifdef CONFIG_NL80211_TESTMODE 4103 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4104 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4105 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4106 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4107 }; 4108 4109 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4110 struct ieee80211_vif *vif, 4111 void *data, int len) 4112 { 4113 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4114 int err; 4115 u32 noa_duration; 4116 4117 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy, 4118 NULL); 4119 if (err) 4120 return err; 4121 4122 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4123 return -EINVAL; 4124 4125 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4126 case IWL_MVM_TM_CMD_SET_NOA: 4127 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4128 !vif->bss_conf.enable_beacon || 4129 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4130 return -EINVAL; 4131 4132 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4133 if (noa_duration >= vif->bss_conf.beacon_int) 4134 return -EINVAL; 4135 4136 mvm->noa_duration = noa_duration; 4137 mvm->noa_vif = vif; 4138 4139 return iwl_mvm_update_quotas(mvm, true, NULL); 4140 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4141 /* must be associated client vif - ignore authorized */ 4142 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4143 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4144 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4145 return -EINVAL; 4146 4147 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4148 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4149 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4150 } 4151 4152 return -EOPNOTSUPP; 4153 } 4154 4155 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4156 struct ieee80211_vif *vif, 4157 void *data, int len) 4158 { 4159 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4160 int err; 4161 4162 mutex_lock(&mvm->mutex); 4163 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4164 mutex_unlock(&mvm->mutex); 4165 4166 return err; 4167 } 4168 #endif 4169 4170 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4171 struct ieee80211_vif *vif, 4172 struct ieee80211_channel_switch *chsw) 4173 { 4174 /* By implementing this operation, we prevent mac80211 from 4175 * starting its own channel switch timer, so that we can call 4176 * ieee80211_chswitch_done() ourselves at the right time 4177 * (which is when the absence time event starts). 4178 */ 4179 4180 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4181 "dummy channel switch op\n"); 4182 } 4183 4184 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4185 struct ieee80211_vif *vif, 4186 struct ieee80211_channel_switch *chsw) 4187 { 4188 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4189 struct ieee80211_vif *csa_vif; 4190 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4191 u32 apply_time; 4192 int ret; 4193 4194 mutex_lock(&mvm->mutex); 4195 4196 mvmvif->csa_failed = false; 4197 4198 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4199 chsw->chandef.center_freq1); 4200 4201 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4202 ieee80211_vif_to_wdev(vif), 4203 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4204 4205 switch (vif->type) { 4206 case NL80211_IFTYPE_AP: 4207 csa_vif = 4208 rcu_dereference_protected(mvm->csa_vif, 4209 lockdep_is_held(&mvm->mutex)); 4210 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4211 "Another CSA is already in progress")) { 4212 ret = -EBUSY; 4213 goto out_unlock; 4214 } 4215 4216 /* we still didn't unblock tx. prevent new CS meanwhile */ 4217 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4218 lockdep_is_held(&mvm->mutex))) { 4219 ret = -EBUSY; 4220 goto out_unlock; 4221 } 4222 4223 rcu_assign_pointer(mvm->csa_vif, vif); 4224 4225 if (WARN_ONCE(mvmvif->csa_countdown, 4226 "Previous CSA countdown didn't complete")) { 4227 ret = -EBUSY; 4228 goto out_unlock; 4229 } 4230 4231 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4232 4233 break; 4234 case NL80211_IFTYPE_STATION: 4235 /* Schedule the time event to a bit before beacon 1, 4236 * to make sure we're in the new channel when the 4237 * GO/AP arrives. In case count <= 1 immediately schedule the 4238 * TE (this might result with some packet loss or connection 4239 * loss). 4240 */ 4241 if (chsw->count <= 1) 4242 apply_time = 0; 4243 else 4244 apply_time = chsw->device_timestamp + 4245 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4246 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4247 4248 if (chsw->block_tx) 4249 iwl_mvm_csa_client_absent(mvm, vif); 4250 4251 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4252 apply_time); 4253 if (mvmvif->bf_data.bf_enabled) { 4254 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4255 if (ret) 4256 goto out_unlock; 4257 } 4258 4259 break; 4260 default: 4261 break; 4262 } 4263 4264 mvmvif->ps_disabled = true; 4265 4266 ret = iwl_mvm_power_update_ps(mvm); 4267 if (ret) 4268 goto out_unlock; 4269 4270 /* we won't be on this channel any longer */ 4271 iwl_mvm_teardown_tdls_peers(mvm); 4272 4273 out_unlock: 4274 mutex_unlock(&mvm->mutex); 4275 4276 return ret; 4277 } 4278 4279 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 4280 struct ieee80211_vif *vif) 4281 { 4282 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4283 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4284 int ret; 4285 4286 mutex_lock(&mvm->mutex); 4287 4288 if (mvmvif->csa_failed) { 4289 mvmvif->csa_failed = false; 4290 ret = -EIO; 4291 goto out_unlock; 4292 } 4293 4294 if (vif->type == NL80211_IFTYPE_STATION) { 4295 struct iwl_mvm_sta *mvmsta; 4296 4297 mvmvif->csa_bcn_pending = false; 4298 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 4299 mvmvif->ap_sta_id); 4300 4301 if (WARN_ON(!mvmsta)) { 4302 ret = -EIO; 4303 goto out_unlock; 4304 } 4305 4306 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 4307 4308 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4309 4310 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4311 if (ret) 4312 goto out_unlock; 4313 4314 iwl_mvm_stop_session_protection(mvm, vif); 4315 } 4316 4317 mvmvif->ps_disabled = false; 4318 4319 ret = iwl_mvm_power_update_ps(mvm); 4320 4321 out_unlock: 4322 mutex_unlock(&mvm->mutex); 4323 4324 return ret; 4325 } 4326 4327 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4328 { 4329 int i; 4330 4331 if (!iwl_mvm_has_new_tx_api(mvm)) { 4332 if (drop) { 4333 mutex_lock(&mvm->mutex); 4334 iwl_mvm_flush_tx_path(mvm, 4335 iwl_mvm_flushable_queues(mvm) & queues, 0); 4336 mutex_unlock(&mvm->mutex); 4337 } else { 4338 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4339 } 4340 return; 4341 } 4342 4343 mutex_lock(&mvm->mutex); 4344 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4345 struct ieee80211_sta *sta; 4346 4347 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4348 lockdep_is_held(&mvm->mutex)); 4349 if (IS_ERR_OR_NULL(sta)) 4350 continue; 4351 4352 if (drop) 4353 iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0); 4354 else 4355 iwl_mvm_wait_sta_queues_empty(mvm, 4356 iwl_mvm_sta_from_mac80211(sta)); 4357 } 4358 mutex_unlock(&mvm->mutex); 4359 } 4360 4361 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4362 struct ieee80211_vif *vif, u32 queues, bool drop) 4363 { 4364 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4365 struct iwl_mvm_vif *mvmvif; 4366 struct iwl_mvm_sta *mvmsta; 4367 struct ieee80211_sta *sta; 4368 int i; 4369 u32 msk = 0; 4370 4371 if (!vif) { 4372 iwl_mvm_flush_no_vif(mvm, queues, drop); 4373 return; 4374 } 4375 4376 if (vif->type != NL80211_IFTYPE_STATION) 4377 return; 4378 4379 /* Make sure we're done with the deferred traffic before flushing */ 4380 flush_work(&mvm->add_stream_wk); 4381 4382 mutex_lock(&mvm->mutex); 4383 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4384 4385 /* flush the AP-station and all TDLS peers */ 4386 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4387 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4388 lockdep_is_held(&mvm->mutex)); 4389 if (IS_ERR_OR_NULL(sta)) 4390 continue; 4391 4392 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4393 if (mvmsta->vif != vif) 4394 continue; 4395 4396 /* make sure only TDLS peers or the AP are flushed */ 4397 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4398 4399 if (drop) { 4400 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4401 IWL_ERR(mvm, "flush request fail\n"); 4402 } else { 4403 msk |= mvmsta->tfd_queue_msk; 4404 if (iwl_mvm_has_new_tx_api(mvm)) 4405 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4406 } 4407 } 4408 4409 mutex_unlock(&mvm->mutex); 4410 4411 /* this can take a while, and we may need/want other operations 4412 * to succeed while doing this, so do it without the mutex held 4413 */ 4414 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4415 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4416 } 4417 4418 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4419 struct survey_info *survey) 4420 { 4421 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4422 int ret; 4423 4424 memset(survey, 0, sizeof(*survey)); 4425 4426 /* only support global statistics right now */ 4427 if (idx != 0) 4428 return -ENOENT; 4429 4430 if (!fw_has_capa(&mvm->fw->ucode_capa, 4431 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4432 return -ENOENT; 4433 4434 mutex_lock(&mvm->mutex); 4435 4436 if (iwl_mvm_firmware_running(mvm)) { 4437 ret = iwl_mvm_request_statistics(mvm, false); 4438 if (ret) 4439 goto out; 4440 } 4441 4442 survey->filled = SURVEY_INFO_TIME | 4443 SURVEY_INFO_TIME_RX | 4444 SURVEY_INFO_TIME_TX | 4445 SURVEY_INFO_TIME_SCAN; 4446 survey->time = mvm->accu_radio_stats.on_time_rf + 4447 mvm->radio_stats.on_time_rf; 4448 do_div(survey->time, USEC_PER_MSEC); 4449 4450 survey->time_rx = mvm->accu_radio_stats.rx_time + 4451 mvm->radio_stats.rx_time; 4452 do_div(survey->time_rx, USEC_PER_MSEC); 4453 4454 survey->time_tx = mvm->accu_radio_stats.tx_time + 4455 mvm->radio_stats.tx_time; 4456 do_div(survey->time_tx, USEC_PER_MSEC); 4457 4458 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4459 mvm->radio_stats.on_time_scan; 4460 do_div(survey->time_scan, USEC_PER_MSEC); 4461 4462 ret = 0; 4463 out: 4464 mutex_unlock(&mvm->mutex); 4465 return ret; 4466 } 4467 4468 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4469 struct ieee80211_vif *vif, 4470 struct ieee80211_sta *sta, 4471 struct station_info *sinfo) 4472 { 4473 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4474 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4475 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4476 4477 if (mvmsta->avg_energy) { 4478 sinfo->signal_avg = mvmsta->avg_energy; 4479 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4480 } 4481 4482 /* if beacon filtering isn't on mac80211 does it anyway */ 4483 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4484 return; 4485 4486 if (!vif->bss_conf.assoc) 4487 return; 4488 4489 mutex_lock(&mvm->mutex); 4490 4491 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4492 goto unlock; 4493 4494 if (iwl_mvm_request_statistics(mvm, false)) 4495 goto unlock; 4496 4497 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4498 mvmvif->beacon_stats.accu_num_beacons; 4499 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4500 if (mvmvif->beacon_stats.avg_signal) { 4501 /* firmware only reports a value after RXing a few beacons */ 4502 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4503 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4504 } 4505 unlock: 4506 mutex_unlock(&mvm->mutex); 4507 } 4508 4509 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4510 struct ieee80211_vif *vif, 4511 const struct ieee80211_event *event) 4512 { 4513 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4514 do { \ 4515 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4516 break; \ 4517 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4518 } while (0) 4519 4520 struct iwl_fw_dbg_trigger_tlv *trig; 4521 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4522 4523 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4524 FW_DBG_TRIGGER_MLME); 4525 if (!trig) 4526 return; 4527 4528 trig_mlme = (void *)trig->data; 4529 4530 if (event->u.mlme.data == ASSOC_EVENT) { 4531 if (event->u.mlme.status == MLME_DENIED) 4532 CHECK_MLME_TRIGGER(stop_assoc_denied, 4533 "DENIED ASSOC: reason %d", 4534 event->u.mlme.reason); 4535 else if (event->u.mlme.status == MLME_TIMEOUT) 4536 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4537 "ASSOC TIMEOUT"); 4538 } else if (event->u.mlme.data == AUTH_EVENT) { 4539 if (event->u.mlme.status == MLME_DENIED) 4540 CHECK_MLME_TRIGGER(stop_auth_denied, 4541 "DENIED AUTH: reason %d", 4542 event->u.mlme.reason); 4543 else if (event->u.mlme.status == MLME_TIMEOUT) 4544 CHECK_MLME_TRIGGER(stop_auth_timeout, 4545 "AUTH TIMEOUT"); 4546 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4547 CHECK_MLME_TRIGGER(stop_rx_deauth, 4548 "DEAUTH RX %d", event->u.mlme.reason); 4549 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4550 CHECK_MLME_TRIGGER(stop_tx_deauth, 4551 "DEAUTH TX %d", event->u.mlme.reason); 4552 } 4553 #undef CHECK_MLME_TRIGGER 4554 } 4555 4556 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4557 struct ieee80211_vif *vif, 4558 const struct ieee80211_event *event) 4559 { 4560 struct iwl_fw_dbg_trigger_tlv *trig; 4561 struct iwl_fw_dbg_trigger_ba *ba_trig; 4562 4563 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4564 FW_DBG_TRIGGER_BA); 4565 if (!trig) 4566 return; 4567 4568 ba_trig = (void *)trig->data; 4569 4570 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4571 return; 4572 4573 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4574 "BAR received from %pM, tid %d, ssn %d", 4575 event->u.ba.sta->addr, event->u.ba.tid, 4576 event->u.ba.ssn); 4577 } 4578 4579 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4580 struct ieee80211_vif *vif, 4581 const struct ieee80211_event *event) 4582 { 4583 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4584 4585 switch (event->type) { 4586 case MLME_EVENT: 4587 iwl_mvm_event_mlme_callback(mvm, vif, event); 4588 break; 4589 case BAR_RX_EVENT: 4590 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4591 break; 4592 case BA_FRAME_TIMEOUT: 4593 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 4594 event->u.ba.tid); 4595 break; 4596 default: 4597 break; 4598 } 4599 } 4600 4601 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4602 struct iwl_mvm_internal_rxq_notif *notif, 4603 u32 size) 4604 { 4605 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4606 int ret; 4607 4608 lockdep_assert_held(&mvm->mutex); 4609 4610 if (!iwl_mvm_has_new_rx_api(mvm)) 4611 return; 4612 4613 notif->cookie = mvm->queue_sync_cookie; 4614 4615 if (notif->sync) 4616 atomic_set(&mvm->queue_sync_counter, 4617 mvm->trans->num_rx_queues); 4618 4619 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4620 if (ret) { 4621 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4622 goto out; 4623 } 4624 4625 if (notif->sync) { 4626 ret = wait_event_timeout(mvm->rx_sync_waitq, 4627 atomic_read(&mvm->queue_sync_counter) == 0 || 4628 iwl_mvm_is_radio_killed(mvm), 4629 HZ); 4630 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 4631 } 4632 4633 out: 4634 atomic_set(&mvm->queue_sync_counter, 0); 4635 mvm->queue_sync_cookie++; 4636 } 4637 4638 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4639 { 4640 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4641 struct iwl_mvm_internal_rxq_notif data = { 4642 .type = IWL_MVM_RXQ_EMPTY, 4643 .sync = 1, 4644 }; 4645 4646 mutex_lock(&mvm->mutex); 4647 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4648 mutex_unlock(&mvm->mutex); 4649 } 4650 4651 const struct ieee80211_ops iwl_mvm_hw_ops = { 4652 .tx = iwl_mvm_mac_tx, 4653 .ampdu_action = iwl_mvm_mac_ampdu_action, 4654 .start = iwl_mvm_mac_start, 4655 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4656 .stop = iwl_mvm_mac_stop, 4657 .add_interface = iwl_mvm_mac_add_interface, 4658 .remove_interface = iwl_mvm_mac_remove_interface, 4659 .config = iwl_mvm_mac_config, 4660 .prepare_multicast = iwl_mvm_prepare_multicast, 4661 .configure_filter = iwl_mvm_configure_filter, 4662 .config_iface_filter = iwl_mvm_config_iface_filter, 4663 .bss_info_changed = iwl_mvm_bss_info_changed, 4664 .hw_scan = iwl_mvm_mac_hw_scan, 4665 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4666 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4667 .sta_state = iwl_mvm_mac_sta_state, 4668 .sta_notify = iwl_mvm_mac_sta_notify, 4669 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4670 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4671 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4672 .sta_rc_update = iwl_mvm_sta_rc_update, 4673 .conf_tx = iwl_mvm_mac_conf_tx, 4674 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4675 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4676 .flush = iwl_mvm_mac_flush, 4677 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4678 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4679 .set_key = iwl_mvm_mac_set_key, 4680 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4681 .remain_on_channel = iwl_mvm_roc, 4682 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4683 .add_chanctx = iwl_mvm_add_chanctx, 4684 .remove_chanctx = iwl_mvm_remove_chanctx, 4685 .change_chanctx = iwl_mvm_change_chanctx, 4686 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4687 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4688 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4689 4690 .start_ap = iwl_mvm_start_ap_ibss, 4691 .stop_ap = iwl_mvm_stop_ap_ibss, 4692 .join_ibss = iwl_mvm_start_ap_ibss, 4693 .leave_ibss = iwl_mvm_stop_ap_ibss, 4694 4695 .tx_last_beacon = iwl_mvm_tx_last_beacon, 4696 4697 .set_tim = iwl_mvm_set_tim, 4698 4699 .channel_switch = iwl_mvm_channel_switch, 4700 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4701 .post_channel_switch = iwl_mvm_post_channel_switch, 4702 4703 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4704 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4705 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4706 4707 .event_callback = iwl_mvm_mac_event_callback, 4708 4709 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4710 4711 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4712 4713 #ifdef CONFIG_PM_SLEEP 4714 /* look at d3.c */ 4715 .suspend = iwl_mvm_suspend, 4716 .resume = iwl_mvm_resume, 4717 .set_wakeup = iwl_mvm_set_wakeup, 4718 .set_rekey_data = iwl_mvm_set_rekey_data, 4719 #if IS_ENABLED(CONFIG_IPV6) 4720 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4721 #endif 4722 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4723 #endif 4724 .get_survey = iwl_mvm_mac_get_survey, 4725 .sta_statistics = iwl_mvm_mac_sta_statistics, 4726 #ifdef CONFIG_IWLWIFI_DEBUGFS 4727 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 4728 #endif 4729 }; 4730