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 iwl_fw_dbg_apply_point(&mvm->fwrt, IWL_FW_INI_APPLY_POST_INIT); 1133 1134 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1135 /* Something went wrong - we need to finish some cleanup 1136 * that normally iwl_mvm_mac_restart_complete() below 1137 * would do. 1138 */ 1139 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1140 #ifdef CONFIG_PM 1141 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1142 #endif 1143 } 1144 1145 return ret; 1146 } 1147 1148 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1149 { 1150 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1151 int ret; 1152 1153 /* Some hw restart cleanups must not hold the mutex */ 1154 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1155 /* 1156 * Make sure we are out of d0i3. This is needed 1157 * to make sure the reference accounting is correct 1158 * (and there is no stale d0i3_exit_work). 1159 */ 1160 wait_event_timeout(mvm->d0i3_exit_waitq, 1161 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1162 &mvm->status), 1163 HZ); 1164 } 1165 1166 mutex_lock(&mvm->mutex); 1167 ret = __iwl_mvm_mac_start(mvm); 1168 mutex_unlock(&mvm->mutex); 1169 1170 return ret; 1171 } 1172 1173 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1174 { 1175 int ret; 1176 1177 mutex_lock(&mvm->mutex); 1178 1179 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1180 #ifdef CONFIG_PM 1181 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1182 #endif 1183 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1184 if (ret) 1185 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1186 ret); 1187 1188 /* allow transport/FW low power modes */ 1189 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1190 1191 /* 1192 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1193 * of packets the FW sent out, so we must reconnect. 1194 */ 1195 iwl_mvm_teardown_tdls_peers(mvm); 1196 1197 mutex_unlock(&mvm->mutex); 1198 } 1199 1200 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1201 { 1202 if (iwl_mvm_is_d0i3_supported(mvm) && 1203 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1204 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1205 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1206 &mvm->status), 1207 HZ), 1208 "D0i3 exit on resume timed out\n"); 1209 } 1210 1211 static void 1212 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1213 enum ieee80211_reconfig_type reconfig_type) 1214 { 1215 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1216 1217 switch (reconfig_type) { 1218 case IEEE80211_RECONFIG_TYPE_RESTART: 1219 iwl_mvm_restart_complete(mvm); 1220 break; 1221 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1222 iwl_mvm_resume_complete(mvm); 1223 break; 1224 } 1225 } 1226 1227 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1228 { 1229 lockdep_assert_held(&mvm->mutex); 1230 1231 /* firmware counters are obviously reset now, but we shouldn't 1232 * partially track so also clear the fw_reset_accu counters. 1233 */ 1234 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1235 1236 /* async_handlers_wk is now blocked */ 1237 1238 /* 1239 * The work item could be running or queued if the 1240 * ROC time event stops just as we get here. 1241 */ 1242 flush_work(&mvm->roc_done_wk); 1243 1244 iwl_mvm_stop_device(mvm); 1245 1246 iwl_mvm_async_handlers_purge(mvm); 1247 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1248 1249 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1250 iwl_mvm_del_aux_sta(mvm); 1251 1252 /* 1253 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1254 * hw (as restart_complete() won't be called in this case) and mac80211 1255 * won't execute the restart. 1256 * But make sure to cleanup interfaces that have gone down before/during 1257 * HW restart was requested. 1258 */ 1259 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1260 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1261 &mvm->status)) 1262 ieee80211_iterate_interfaces(mvm->hw, 0, 1263 iwl_mvm_cleanup_iterator, mvm); 1264 1265 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1266 * make sure there's nothing left there and warn if any is found. 1267 */ 1268 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1269 int i; 1270 1271 for (i = 0; i < mvm->max_scans; i++) { 1272 if (WARN_ONCE(mvm->scan_uid_status[i], 1273 "UMAC scan UID %d status was not cleaned\n", 1274 i)) 1275 mvm->scan_uid_status[i] = 0; 1276 } 1277 } 1278 } 1279 1280 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1281 { 1282 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1283 1284 flush_work(&mvm->d0i3_exit_work); 1285 flush_work(&mvm->async_handlers_wk); 1286 flush_work(&mvm->add_stream_wk); 1287 1288 /* 1289 * Lock and clear the firmware running bit here already, so that 1290 * new commands coming in elsewhere, e.g. from debugfs, will not 1291 * be able to proceed. This is important here because one of those 1292 * debugfs files causes the firmware dump to be triggered, and if we 1293 * don't stop debugfs accesses before canceling that it could be 1294 * retriggered after we flush it but before we've cleared the bit. 1295 */ 1296 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1297 1298 iwl_fw_cancel_dump(&mvm->fwrt); 1299 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1300 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1301 iwl_fw_free_dump_desc(&mvm->fwrt); 1302 1303 mutex_lock(&mvm->mutex); 1304 __iwl_mvm_mac_stop(mvm); 1305 mutex_unlock(&mvm->mutex); 1306 1307 /* 1308 * The worker might have been waiting for the mutex, let it run and 1309 * discover that its list is now empty. 1310 */ 1311 cancel_work_sync(&mvm->async_handlers_wk); 1312 } 1313 1314 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1315 { 1316 u16 i; 1317 1318 lockdep_assert_held(&mvm->mutex); 1319 1320 for (i = 0; i < NUM_PHY_CTX; i++) 1321 if (!mvm->phy_ctxts[i].ref) 1322 return &mvm->phy_ctxts[i]; 1323 1324 IWL_ERR(mvm, "No available PHY context\n"); 1325 return NULL; 1326 } 1327 1328 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1329 s16 tx_power) 1330 { 1331 int len; 1332 union { 1333 struct iwl_dev_tx_power_cmd v5; 1334 struct iwl_dev_tx_power_cmd_v4 v4; 1335 } cmd = { 1336 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1337 .v5.v3.mac_context_id = 1338 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1339 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1340 }; 1341 1342 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1343 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1344 1345 if (fw_has_api(&mvm->fw->ucode_capa, 1346 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1347 len = sizeof(cmd.v5); 1348 else if (fw_has_capa(&mvm->fw->ucode_capa, 1349 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1350 len = sizeof(cmd.v4); 1351 else 1352 len = sizeof(cmd.v4.v3); 1353 1354 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1355 } 1356 1357 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1358 struct ieee80211_vif *vif) 1359 { 1360 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1361 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1362 int ret; 1363 1364 mvmvif->mvm = mvm; 1365 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1366 1367 /* 1368 * make sure D0i3 exit is completed, otherwise a target access 1369 * during tx queue configuration could be done when still in 1370 * D0i3 state. 1371 */ 1372 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1373 if (ret) 1374 return ret; 1375 1376 /* 1377 * Not much to do here. The stack will not allow interface 1378 * types or combinations that we didn't advertise, so we 1379 * don't really have to check the types. 1380 */ 1381 1382 mutex_lock(&mvm->mutex); 1383 1384 /* make sure that beacon statistics don't go backwards with FW reset */ 1385 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1386 mvmvif->beacon_stats.accu_num_beacons += 1387 mvmvif->beacon_stats.num_beacons; 1388 1389 /* Allocate resources for the MAC context, and add it to the fw */ 1390 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1391 if (ret) 1392 goto out_unlock; 1393 1394 /* Counting number of interfaces is needed for legacy PM */ 1395 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1396 mvm->vif_count++; 1397 1398 /* 1399 * The AP binding flow can be done only after the beacon 1400 * template is configured (which happens only in the mac80211 1401 * start_ap() flow), and adding the broadcast station can happen 1402 * only after the binding. 1403 * In addition, since modifying the MAC before adding a bcast 1404 * station is not allowed by the FW, delay the adding of MAC context to 1405 * the point where we can also add the bcast station. 1406 * In short: there's not much we can do at this point, other than 1407 * allocating resources :) 1408 */ 1409 if (vif->type == NL80211_IFTYPE_AP || 1410 vif->type == NL80211_IFTYPE_ADHOC) { 1411 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1412 if (ret) { 1413 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1414 goto out_release; 1415 } 1416 1417 /* 1418 * Only queue for this station is the mcast queue, 1419 * which shouldn't be in TFD mask anyway 1420 */ 1421 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1422 0, vif->type, 1423 IWL_STA_MULTICAST); 1424 if (ret) 1425 goto out_release; 1426 1427 iwl_mvm_vif_dbgfs_register(mvm, vif); 1428 goto out_unlock; 1429 } 1430 1431 mvmvif->features |= hw->netdev_features; 1432 1433 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1434 if (ret) 1435 goto out_release; 1436 1437 ret = iwl_mvm_power_update_mac(mvm); 1438 if (ret) 1439 goto out_remove_mac; 1440 1441 /* beacon filtering */ 1442 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1443 if (ret) 1444 goto out_remove_mac; 1445 1446 if (!mvm->bf_allowed_vif && 1447 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1448 mvm->bf_allowed_vif = mvmvif; 1449 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1450 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1451 } 1452 1453 /* 1454 * P2P_DEVICE interface does not have a channel context assigned to it, 1455 * so a dedicated PHY context is allocated to it and the corresponding 1456 * MAC context is bound to it at this stage. 1457 */ 1458 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1459 1460 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1461 if (!mvmvif->phy_ctxt) { 1462 ret = -ENOSPC; 1463 goto out_free_bf; 1464 } 1465 1466 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1467 ret = iwl_mvm_binding_add_vif(mvm, vif); 1468 if (ret) 1469 goto out_unref_phy; 1470 1471 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1472 if (ret) 1473 goto out_unbind; 1474 1475 /* Save a pointer to p2p device vif, so it can later be used to 1476 * update the p2p device MAC when a GO is started/stopped */ 1477 mvm->p2p_device_vif = vif; 1478 } 1479 1480 iwl_mvm_tcm_add_vif(mvm, vif); 1481 1482 if (vif->type == NL80211_IFTYPE_MONITOR) 1483 mvm->monitor_on = true; 1484 1485 iwl_mvm_vif_dbgfs_register(mvm, vif); 1486 goto out_unlock; 1487 1488 out_unbind: 1489 iwl_mvm_binding_remove_vif(mvm, vif); 1490 out_unref_phy: 1491 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1492 out_free_bf: 1493 if (mvm->bf_allowed_vif == mvmvif) { 1494 mvm->bf_allowed_vif = NULL; 1495 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1496 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1497 } 1498 out_remove_mac: 1499 mvmvif->phy_ctxt = NULL; 1500 iwl_mvm_mac_ctxt_remove(mvm, vif); 1501 out_release: 1502 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1503 mvm->vif_count--; 1504 out_unlock: 1505 mutex_unlock(&mvm->mutex); 1506 1507 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1508 1509 return ret; 1510 } 1511 1512 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1513 struct ieee80211_vif *vif) 1514 { 1515 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1516 /* 1517 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1518 * We assume here that all the packets sent to the OFFCHANNEL 1519 * queue are sent in ROC session. 1520 */ 1521 flush_work(&mvm->roc_done_wk); 1522 } 1523 } 1524 1525 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1526 struct ieee80211_vif *vif) 1527 { 1528 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1529 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1530 struct iwl_probe_resp_data *probe_data; 1531 1532 iwl_mvm_prepare_mac_removal(mvm, vif); 1533 1534 if (!(vif->type == NL80211_IFTYPE_AP || 1535 vif->type == NL80211_IFTYPE_ADHOC)) 1536 iwl_mvm_tcm_rm_vif(mvm, vif); 1537 1538 mutex_lock(&mvm->mutex); 1539 1540 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1541 lockdep_is_held(&mvm->mutex)); 1542 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1543 if (probe_data) 1544 kfree_rcu(probe_data, rcu_head); 1545 1546 if (mvm->bf_allowed_vif == mvmvif) { 1547 mvm->bf_allowed_vif = NULL; 1548 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1549 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1550 } 1551 1552 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1553 1554 /* 1555 * For AP/GO interface, the tear down of the resources allocated to the 1556 * interface is be handled as part of the stop_ap flow. 1557 */ 1558 if (vif->type == NL80211_IFTYPE_AP || 1559 vif->type == NL80211_IFTYPE_ADHOC) { 1560 #ifdef CONFIG_NL80211_TESTMODE 1561 if (vif == mvm->noa_vif) { 1562 mvm->noa_vif = NULL; 1563 mvm->noa_duration = 0; 1564 } 1565 #endif 1566 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1567 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1568 goto out_release; 1569 } 1570 1571 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1572 mvm->p2p_device_vif = NULL; 1573 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1574 iwl_mvm_binding_remove_vif(mvm, vif); 1575 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1576 mvmvif->phy_ctxt = NULL; 1577 } 1578 1579 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1580 mvm->vif_count--; 1581 1582 iwl_mvm_power_update_mac(mvm); 1583 iwl_mvm_mac_ctxt_remove(mvm, vif); 1584 1585 if (vif->type == NL80211_IFTYPE_MONITOR) 1586 mvm->monitor_on = false; 1587 1588 out_release: 1589 mutex_unlock(&mvm->mutex); 1590 } 1591 1592 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1593 { 1594 return 0; 1595 } 1596 1597 struct iwl_mvm_mc_iter_data { 1598 struct iwl_mvm *mvm; 1599 int port_id; 1600 }; 1601 1602 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1603 struct ieee80211_vif *vif) 1604 { 1605 struct iwl_mvm_mc_iter_data *data = _data; 1606 struct iwl_mvm *mvm = data->mvm; 1607 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1608 struct iwl_host_cmd hcmd = { 1609 .id = MCAST_FILTER_CMD, 1610 .flags = CMD_ASYNC, 1611 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1612 }; 1613 int ret, len; 1614 1615 /* if we don't have free ports, mcast frames will be dropped */ 1616 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1617 return; 1618 1619 if (vif->type != NL80211_IFTYPE_STATION || 1620 !vif->bss_conf.assoc) 1621 return; 1622 1623 cmd->port_id = data->port_id++; 1624 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1625 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1626 1627 hcmd.len[0] = len; 1628 hcmd.data[0] = cmd; 1629 1630 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1631 if (ret) 1632 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1633 } 1634 1635 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1636 { 1637 struct iwl_mvm_mc_iter_data iter_data = { 1638 .mvm = mvm, 1639 }; 1640 1641 lockdep_assert_held(&mvm->mutex); 1642 1643 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1644 return; 1645 1646 ieee80211_iterate_active_interfaces_atomic( 1647 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1648 iwl_mvm_mc_iface_iterator, &iter_data); 1649 } 1650 1651 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1652 struct netdev_hw_addr_list *mc_list) 1653 { 1654 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1655 struct iwl_mcast_filter_cmd *cmd; 1656 struct netdev_hw_addr *addr; 1657 int addr_count; 1658 bool pass_all; 1659 int len; 1660 1661 addr_count = netdev_hw_addr_list_count(mc_list); 1662 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1663 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1664 if (pass_all) 1665 addr_count = 0; 1666 1667 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1668 cmd = kzalloc(len, GFP_ATOMIC); 1669 if (!cmd) 1670 return 0; 1671 1672 if (pass_all) { 1673 cmd->pass_all = 1; 1674 return (u64)(unsigned long)cmd; 1675 } 1676 1677 netdev_hw_addr_list_for_each(addr, mc_list) { 1678 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1679 cmd->count, addr->addr); 1680 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1681 addr->addr, ETH_ALEN); 1682 cmd->count++; 1683 } 1684 1685 return (u64)(unsigned long)cmd; 1686 } 1687 1688 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1689 unsigned int changed_flags, 1690 unsigned int *total_flags, 1691 u64 multicast) 1692 { 1693 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1694 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1695 1696 mutex_lock(&mvm->mutex); 1697 1698 /* replace previous configuration */ 1699 kfree(mvm->mcast_filter_cmd); 1700 mvm->mcast_filter_cmd = cmd; 1701 1702 if (!cmd) 1703 goto out; 1704 1705 if (changed_flags & FIF_ALLMULTI) 1706 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1707 1708 if (cmd->pass_all) 1709 cmd->count = 0; 1710 1711 iwl_mvm_recalc_multicast(mvm); 1712 out: 1713 mutex_unlock(&mvm->mutex); 1714 *total_flags = 0; 1715 } 1716 1717 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1718 struct ieee80211_vif *vif, 1719 unsigned int filter_flags, 1720 unsigned int changed_flags) 1721 { 1722 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1723 1724 /* We support only filter for probe requests */ 1725 if (!(changed_flags & FIF_PROBE_REQ)) 1726 return; 1727 1728 /* Supported only for p2p client interfaces */ 1729 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1730 !vif->p2p) 1731 return; 1732 1733 mutex_lock(&mvm->mutex); 1734 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1735 mutex_unlock(&mvm->mutex); 1736 } 1737 1738 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1739 struct iwl_bcast_iter_data { 1740 struct iwl_mvm *mvm; 1741 struct iwl_bcast_filter_cmd *cmd; 1742 u8 current_filter; 1743 }; 1744 1745 static void 1746 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1747 const struct iwl_fw_bcast_filter *in_filter, 1748 struct iwl_fw_bcast_filter *out_filter) 1749 { 1750 struct iwl_fw_bcast_filter_attr *attr; 1751 int i; 1752 1753 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1754 1755 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1756 attr = &out_filter->attrs[i]; 1757 1758 if (!attr->mask) 1759 break; 1760 1761 switch (attr->reserved1) { 1762 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1763 if (vif->bss_conf.arp_addr_cnt != 1) { 1764 attr->mask = 0; 1765 continue; 1766 } 1767 1768 attr->val = vif->bss_conf.arp_addr_list[0]; 1769 break; 1770 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1771 attr->val = *(__be32 *)&vif->addr[2]; 1772 break; 1773 default: 1774 break; 1775 } 1776 attr->reserved1 = 0; 1777 out_filter->num_attrs++; 1778 } 1779 } 1780 1781 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1782 struct ieee80211_vif *vif) 1783 { 1784 struct iwl_bcast_iter_data *data = _data; 1785 struct iwl_mvm *mvm = data->mvm; 1786 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1787 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1788 struct iwl_fw_bcast_mac *bcast_mac; 1789 int i; 1790 1791 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1792 return; 1793 1794 bcast_mac = &cmd->macs[mvmvif->id]; 1795 1796 /* 1797 * enable filtering only for associated stations, but not for P2P 1798 * Clients 1799 */ 1800 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1801 !vif->bss_conf.assoc) 1802 return; 1803 1804 bcast_mac->default_discard = 1; 1805 1806 /* copy all configured filters */ 1807 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1808 /* 1809 * Make sure we don't exceed our filters limit. 1810 * if there is still a valid filter to be configured, 1811 * be on the safe side and just allow bcast for this mac. 1812 */ 1813 if (WARN_ON_ONCE(data->current_filter >= 1814 ARRAY_SIZE(cmd->filters))) { 1815 bcast_mac->default_discard = 0; 1816 bcast_mac->attached_filters = 0; 1817 break; 1818 } 1819 1820 iwl_mvm_set_bcast_filter(vif, 1821 &mvm->bcast_filters[i], 1822 &cmd->filters[data->current_filter]); 1823 1824 /* skip current filter if it contains no attributes */ 1825 if (!cmd->filters[data->current_filter].num_attrs) 1826 continue; 1827 1828 /* attach the filter to current mac */ 1829 bcast_mac->attached_filters |= 1830 cpu_to_le16(BIT(data->current_filter)); 1831 1832 data->current_filter++; 1833 } 1834 } 1835 1836 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1837 struct iwl_bcast_filter_cmd *cmd) 1838 { 1839 struct iwl_bcast_iter_data iter_data = { 1840 .mvm = mvm, 1841 .cmd = cmd, 1842 }; 1843 1844 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1845 return false; 1846 1847 memset(cmd, 0, sizeof(*cmd)); 1848 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1849 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1850 1851 #ifdef CONFIG_IWLWIFI_DEBUGFS 1852 /* use debugfs filters/macs if override is configured */ 1853 if (mvm->dbgfs_bcast_filtering.override) { 1854 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1855 sizeof(cmd->filters)); 1856 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1857 sizeof(cmd->macs)); 1858 return true; 1859 } 1860 #endif 1861 1862 /* if no filters are configured, do nothing */ 1863 if (!mvm->bcast_filters) 1864 return false; 1865 1866 /* configure and attach these filters for each associated sta vif */ 1867 ieee80211_iterate_active_interfaces( 1868 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1869 iwl_mvm_bcast_filter_iterator, &iter_data); 1870 1871 return true; 1872 } 1873 1874 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1875 { 1876 struct iwl_bcast_filter_cmd cmd; 1877 1878 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1879 return 0; 1880 1881 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1882 return 0; 1883 1884 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1885 sizeof(cmd), &cmd); 1886 } 1887 #else 1888 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1889 { 1890 return 0; 1891 } 1892 #endif 1893 1894 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1895 struct ieee80211_vif *vif) 1896 { 1897 struct iwl_mu_group_mgmt_cmd cmd = {}; 1898 1899 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1900 WLAN_MEMBERSHIP_LEN); 1901 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1902 WLAN_USER_POSITION_LEN); 1903 1904 return iwl_mvm_send_cmd_pdu(mvm, 1905 WIDE_ID(DATA_PATH_GROUP, 1906 UPDATE_MU_GROUPS_CMD), 1907 0, sizeof(cmd), &cmd); 1908 } 1909 1910 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1911 struct ieee80211_vif *vif) 1912 { 1913 if (vif->mu_mimo_owner) { 1914 struct iwl_mu_group_mgmt_notif *notif = _data; 1915 1916 /* 1917 * MU-MIMO Group Id action frame is little endian. We treat 1918 * the data received from firmware as if it came from the 1919 * action frame, so no conversion is needed. 1920 */ 1921 ieee80211_update_mu_groups(vif, 1922 (u8 *)¬if->membership_status, 1923 (u8 *)¬if->user_position); 1924 } 1925 } 1926 1927 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1928 struct iwl_rx_cmd_buffer *rxb) 1929 { 1930 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1931 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1932 1933 ieee80211_iterate_active_interfaces_atomic( 1934 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1935 iwl_mvm_mu_mimo_iface_iterator, notif); 1936 } 1937 1938 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 1939 { 1940 u8 byte_num = ppe_pos_bit / 8; 1941 u8 bit_num = ppe_pos_bit % 8; 1942 u8 residue_bits; 1943 u8 res; 1944 1945 if (bit_num <= 5) 1946 return (ppe[byte_num] >> bit_num) & 1947 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 1948 1949 /* 1950 * If bit_num > 5, we have to combine bits with next byte. 1951 * Calculate how many bits we need to take from current byte (called 1952 * here "residue_bits"), and add them to bits from next byte. 1953 */ 1954 1955 residue_bits = 8 - bit_num; 1956 1957 res = (ppe[byte_num + 1] & 1958 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 1959 residue_bits; 1960 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 1961 1962 return res; 1963 } 1964 1965 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 1966 struct ieee80211_vif *vif, u8 sta_id) 1967 { 1968 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1969 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 1970 .sta_id = sta_id, 1971 .tid_limit = IWL_MAX_TID_COUNT, 1972 .bss_color = vif->bss_conf.bss_color, 1973 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 1974 .frame_time_rts_th = 1975 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 1976 }; 1977 struct ieee80211_sta *sta; 1978 u32 flags; 1979 int i; 1980 1981 rcu_read_lock(); 1982 1983 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 1984 if (IS_ERR(sta)) { 1985 rcu_read_unlock(); 1986 WARN(1, "Can't find STA to configure HE\n"); 1987 return; 1988 } 1989 1990 if (!sta->he_cap.has_he) { 1991 rcu_read_unlock(); 1992 return; 1993 } 1994 1995 flags = 0; 1996 1997 /* HTC flags */ 1998 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 1999 IEEE80211_HE_MAC_CAP0_HTC_HE) 2000 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2001 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2002 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2003 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2004 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2005 u8 link_adap = 2006 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2007 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2008 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2009 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2010 2011 if (link_adap == 2) 2012 sta_ctxt_cmd.htc_flags |= 2013 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2014 else if (link_adap == 3) 2015 sta_ctxt_cmd.htc_flags |= 2016 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2017 } 2018 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2019 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2020 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2021 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2022 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2023 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2024 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2025 2026 /* 2027 * Initialize the PPE thresholds to "None" (7), as described in Table 2028 * 9-262ac of 80211.ax/D3.0. 2029 */ 2030 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2031 2032 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2033 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2034 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2035 u8 nss = (sta->he_cap.ppe_thres[0] & 2036 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2037 u8 ru_index_bitmap = 2038 (sta->he_cap.ppe_thres[0] & 2039 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2040 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2041 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2042 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2043 2044 /* 2045 * FW currently supports only nss == MAX_HE_SUPP_NSS 2046 * 2047 * If nss > MAX: we can ignore values we don't support 2048 * If nss < MAX: we can set zeros in other streams 2049 */ 2050 if (nss > MAX_HE_SUPP_NSS) { 2051 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2052 MAX_HE_SUPP_NSS); 2053 nss = MAX_HE_SUPP_NSS; 2054 } 2055 2056 for (i = 0; i < nss; i++) { 2057 u8 ru_index_tmp = ru_index_bitmap << 1; 2058 u8 bw; 2059 2060 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2061 ru_index_tmp >>= 1; 2062 if (!(ru_index_tmp & 1)) 2063 continue; 2064 2065 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2066 iwl_mvm_he_get_ppe_val(ppe, 2067 ppe_pos_bit); 2068 ppe_pos_bit += 2069 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2070 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2071 iwl_mvm_he_get_ppe_val(ppe, 2072 ppe_pos_bit); 2073 ppe_pos_bit += 2074 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2075 } 2076 } 2077 2078 flags |= STA_CTXT_HE_PACKET_EXT; 2079 } 2080 rcu_read_unlock(); 2081 2082 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2083 flags |= STA_CTXT_HE_MU_EDCA_CW; 2084 for (i = 0; i < AC_NUM; i++) { 2085 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2086 &mvmvif->queue_params[i].mu_edca_param_rec; 2087 2088 if (!mvmvif->queue_params[i].mu_edca) { 2089 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2090 break; 2091 } 2092 2093 sta_ctxt_cmd.trig_based_txf[i].cwmin = 2094 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2095 sta_ctxt_cmd.trig_based_txf[i].cwmax = 2096 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2097 sta_ctxt_cmd.trig_based_txf[i].aifsn = 2098 cpu_to_le16(mu_edca->aifsn); 2099 sta_ctxt_cmd.trig_based_txf[i].mu_time = 2100 cpu_to_le16(mu_edca->mu_edca_timer); 2101 } 2102 2103 if (vif->bss_conf.multi_sta_back_32bit) 2104 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2105 2106 if (vif->bss_conf.ack_enabled) 2107 flags |= STA_CTXT_HE_ACK_ENABLED; 2108 2109 if (vif->bss_conf.uora_exists) { 2110 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2111 2112 sta_ctxt_cmd.rand_alloc_ecwmin = 2113 vif->bss_conf.uora_ocw_range & 0x7; 2114 sta_ctxt_cmd.rand_alloc_ecwmax = 2115 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2116 } 2117 2118 /* TODO: support Multi BSSID IE */ 2119 2120 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2121 2122 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2123 DATA_PATH_GROUP, 0), 2124 0, sizeof(sta_ctxt_cmd), &sta_ctxt_cmd)) 2125 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2126 } 2127 2128 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2129 struct ieee80211_vif *vif, 2130 struct ieee80211_bss_conf *bss_conf, 2131 u32 changes) 2132 { 2133 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2134 int ret; 2135 2136 /* 2137 * Re-calculate the tsf id, as the master-slave relations depend on the 2138 * beacon interval, which was not known when the station interface was 2139 * added. 2140 */ 2141 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2142 if (vif->bss_conf.he_support && 2143 !iwlwifi_mod_params.disable_11ax) 2144 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2145 2146 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2147 } 2148 2149 /* 2150 * If we're not associated yet, take the (new) BSSID before associating 2151 * so the firmware knows. If we're already associated, then use the old 2152 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2153 * branch for disassociation below. 2154 */ 2155 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2156 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2157 2158 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2159 if (ret) 2160 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2161 2162 /* after sending it once, adopt mac80211 data */ 2163 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2164 mvmvif->associated = bss_conf->assoc; 2165 2166 if (changes & BSS_CHANGED_ASSOC) { 2167 if (bss_conf->assoc) { 2168 /* clear statistics to get clean beacon counter */ 2169 iwl_mvm_request_statistics(mvm, true); 2170 memset(&mvmvif->beacon_stats, 0, 2171 sizeof(mvmvif->beacon_stats)); 2172 2173 /* add quota for this interface */ 2174 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2175 if (ret) { 2176 IWL_ERR(mvm, "failed to update quotas\n"); 2177 return; 2178 } 2179 2180 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2181 &mvm->status)) { 2182 /* 2183 * If we're restarting then the firmware will 2184 * obviously have lost synchronisation with 2185 * the AP. It will attempt to synchronise by 2186 * itself, but we can make it more reliable by 2187 * scheduling a session protection time event. 2188 * 2189 * The firmware needs to receive a beacon to 2190 * catch up with synchronisation, use 110% of 2191 * the beacon interval. 2192 * 2193 * Set a large maximum delay to allow for more 2194 * than a single interface. 2195 */ 2196 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2197 iwl_mvm_protect_session(mvm, vif, dur, dur, 2198 5 * dur, false); 2199 } 2200 2201 iwl_mvm_sf_update(mvm, vif, false); 2202 iwl_mvm_power_vif_assoc(mvm, vif); 2203 if (vif->p2p) { 2204 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 2205 iwl_mvm_update_smps(mvm, vif, 2206 IWL_MVM_SMPS_REQ_PROT, 2207 IEEE80211_SMPS_DYNAMIC); 2208 } 2209 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2210 /* 2211 * If update fails - SF might be running in associated 2212 * mode while disassociated - which is forbidden. 2213 */ 2214 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 2215 "Failed to update SF upon disassociation\n"); 2216 2217 /* 2218 * If we get an assert during the connection (after the 2219 * station has been added, but before the vif is set 2220 * to associated), mac80211 will re-add the station and 2221 * then configure the vif. Since the vif is not 2222 * associated, we would remove the station here and 2223 * this would fail the recovery. 2224 */ 2225 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2226 &mvm->status)) { 2227 /* 2228 * Remove AP station now that 2229 * the MAC is unassoc 2230 */ 2231 ret = iwl_mvm_rm_sta_id(mvm, vif, 2232 mvmvif->ap_sta_id); 2233 if (ret) 2234 IWL_ERR(mvm, 2235 "failed to remove AP station\n"); 2236 2237 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 2238 mvm->d0i3_ap_sta_id = 2239 IWL_MVM_INVALID_STA; 2240 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2241 } 2242 2243 /* remove quota for this interface */ 2244 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2245 if (ret) 2246 IWL_ERR(mvm, "failed to update quotas\n"); 2247 2248 if (vif->p2p) 2249 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 2250 2251 /* this will take the cleared BSSID from bss_conf */ 2252 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2253 if (ret) 2254 IWL_ERR(mvm, 2255 "failed to update MAC %pM (clear after unassoc)\n", 2256 vif->addr); 2257 } 2258 2259 /* 2260 * The firmware tracks the MU-MIMO group on its own. 2261 * However, on HW restart we should restore this data. 2262 */ 2263 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2264 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2265 ret = iwl_mvm_update_mu_groups(mvm, vif); 2266 if (ret) 2267 IWL_ERR(mvm, 2268 "failed to update VHT MU_MIMO groups\n"); 2269 } 2270 2271 iwl_mvm_recalc_multicast(mvm); 2272 iwl_mvm_configure_bcast_filter(mvm); 2273 2274 /* reset rssi values */ 2275 mvmvif->bf_data.ave_beacon_signal = 0; 2276 2277 iwl_mvm_bt_coex_vif_change(mvm); 2278 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2279 IEEE80211_SMPS_AUTOMATIC); 2280 if (fw_has_capa(&mvm->fw->ucode_capa, 2281 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2282 iwl_mvm_config_scan(mvm); 2283 } 2284 2285 if (changes & BSS_CHANGED_BEACON_INFO) { 2286 /* 2287 * We received a beacon from the associated AP so 2288 * remove the session protection. 2289 */ 2290 iwl_mvm_stop_session_protection(mvm, vif); 2291 2292 iwl_mvm_sf_update(mvm, vif, false); 2293 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2294 } 2295 2296 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2297 /* 2298 * Send power command on every beacon change, 2299 * because we may have not enabled beacon abort yet. 2300 */ 2301 BSS_CHANGED_BEACON_INFO)) { 2302 ret = iwl_mvm_power_update_mac(mvm); 2303 if (ret) 2304 IWL_ERR(mvm, "failed to update power mode\n"); 2305 } 2306 2307 if (changes & BSS_CHANGED_TXPOWER) { 2308 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2309 bss_conf->txpower); 2310 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2311 } 2312 2313 if (changes & BSS_CHANGED_CQM) { 2314 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2315 /* reset cqm events tracking */ 2316 mvmvif->bf_data.last_cqm_event = 0; 2317 if (mvmvif->bf_data.bf_enabled) { 2318 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2319 if (ret) 2320 IWL_ERR(mvm, 2321 "failed to update CQM thresholds\n"); 2322 } 2323 } 2324 2325 if (changes & BSS_CHANGED_ARP_FILTER) { 2326 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2327 iwl_mvm_configure_bcast_filter(mvm); 2328 } 2329 } 2330 2331 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2332 struct ieee80211_vif *vif) 2333 { 2334 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2335 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2336 int ret; 2337 2338 /* 2339 * iwl_mvm_mac_ctxt_add() might read directly from the device 2340 * (the system time), so make sure it is available. 2341 */ 2342 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2343 if (ret) 2344 return ret; 2345 2346 mutex_lock(&mvm->mutex); 2347 2348 /* Send the beacon template */ 2349 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2350 if (ret) 2351 goto out_unlock; 2352 2353 /* 2354 * Re-calculate the tsf id, as the master-slave relations depend on the 2355 * beacon interval, which was not known when the AP interface was added. 2356 */ 2357 if (vif->type == NL80211_IFTYPE_AP) 2358 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2359 2360 mvmvif->ap_assoc_sta_count = 0; 2361 2362 /* Add the mac context */ 2363 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2364 if (ret) 2365 goto out_unlock; 2366 2367 /* Perform the binding */ 2368 ret = iwl_mvm_binding_add_vif(mvm, vif); 2369 if (ret) 2370 goto out_remove; 2371 2372 /* 2373 * This is not very nice, but the simplest: 2374 * For older FWs adding the mcast sta before the bcast station may 2375 * cause assert 0x2b00. 2376 * This is fixed in later FW so make the order of removal depend on 2377 * the TLV 2378 */ 2379 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2380 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2381 if (ret) 2382 goto out_unbind; 2383 /* 2384 * Send the bcast station. At this stage the TBTT and DTIM time 2385 * events are added and applied to the scheduler 2386 */ 2387 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2388 if (ret) { 2389 iwl_mvm_rm_mcast_sta(mvm, vif); 2390 goto out_unbind; 2391 } 2392 } else { 2393 /* 2394 * Send the bcast station. At this stage the TBTT and DTIM time 2395 * events are added and applied to the scheduler 2396 */ 2397 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2398 if (ret) 2399 goto out_unbind; 2400 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2401 if (ret) { 2402 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2403 goto out_unbind; 2404 } 2405 } 2406 2407 /* must be set before quota calculations */ 2408 mvmvif->ap_ibss_active = true; 2409 2410 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2411 iwl_mvm_vif_set_low_latency(mvmvif, true, 2412 LOW_LATENCY_VIF_TYPE); 2413 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2414 } 2415 2416 /* power updated needs to be done before quotas */ 2417 iwl_mvm_power_update_mac(mvm); 2418 2419 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2420 if (ret) 2421 goto out_quota_failed; 2422 2423 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2424 if (vif->p2p && mvm->p2p_device_vif) 2425 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2426 2427 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2428 2429 iwl_mvm_bt_coex_vif_change(mvm); 2430 2431 /* we don't support TDLS during DCM */ 2432 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2433 iwl_mvm_teardown_tdls_peers(mvm); 2434 2435 goto out_unlock; 2436 2437 out_quota_failed: 2438 iwl_mvm_power_update_mac(mvm); 2439 mvmvif->ap_ibss_active = false; 2440 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2441 iwl_mvm_rm_mcast_sta(mvm, vif); 2442 out_unbind: 2443 iwl_mvm_binding_remove_vif(mvm, vif); 2444 out_remove: 2445 iwl_mvm_mac_ctxt_remove(mvm, vif); 2446 out_unlock: 2447 mutex_unlock(&mvm->mutex); 2448 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2449 return ret; 2450 } 2451 2452 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2453 struct ieee80211_vif *vif) 2454 { 2455 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2456 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2457 2458 iwl_mvm_prepare_mac_removal(mvm, vif); 2459 2460 mutex_lock(&mvm->mutex); 2461 2462 /* Handle AP stop while in CSA */ 2463 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2464 iwl_mvm_remove_time_event(mvm, mvmvif, 2465 &mvmvif->time_event_data); 2466 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2467 mvmvif->csa_countdown = false; 2468 } 2469 2470 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2471 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2472 mvm->csa_tx_block_bcn_timeout = 0; 2473 } 2474 2475 mvmvif->ap_ibss_active = false; 2476 mvm->ap_last_beacon_gp2 = 0; 2477 2478 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2479 iwl_mvm_vif_set_low_latency(mvmvif, false, 2480 LOW_LATENCY_VIF_TYPE); 2481 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2482 } 2483 2484 iwl_mvm_bt_coex_vif_change(mvm); 2485 2486 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2487 2488 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2489 if (vif->p2p && mvm->p2p_device_vif) 2490 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2491 2492 iwl_mvm_update_quotas(mvm, false, NULL); 2493 2494 /* 2495 * This is not very nice, but the simplest: 2496 * For older FWs removing the mcast sta before the bcast station may 2497 * cause assert 0x2b00. 2498 * This is fixed in later FW (which will stop beaconing when removing 2499 * bcast station). 2500 * So make the order of removal depend on the TLV 2501 */ 2502 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2503 iwl_mvm_rm_mcast_sta(mvm, vif); 2504 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2505 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2506 iwl_mvm_rm_mcast_sta(mvm, vif); 2507 iwl_mvm_binding_remove_vif(mvm, vif); 2508 2509 iwl_mvm_power_update_mac(mvm); 2510 2511 iwl_mvm_mac_ctxt_remove(mvm, vif); 2512 2513 kfree(mvmvif->ap_wep_key); 2514 mvmvif->ap_wep_key = NULL; 2515 2516 mutex_unlock(&mvm->mutex); 2517 } 2518 2519 static void 2520 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2521 struct ieee80211_vif *vif, 2522 struct ieee80211_bss_conf *bss_conf, 2523 u32 changes) 2524 { 2525 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2526 2527 /* Changes will be applied when the AP/IBSS is started */ 2528 if (!mvmvif->ap_ibss_active) 2529 return; 2530 2531 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2532 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2533 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2534 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2535 2536 /* Need to send a new beacon template to the FW */ 2537 if (changes & BSS_CHANGED_BEACON && 2538 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2539 IWL_WARN(mvm, "Failed updating beacon data\n"); 2540 2541 if (changes & BSS_CHANGED_TXPOWER) { 2542 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2543 bss_conf->txpower); 2544 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2545 } 2546 } 2547 2548 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2549 struct ieee80211_vif *vif, 2550 struct ieee80211_bss_conf *bss_conf, 2551 u32 changes) 2552 { 2553 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2554 2555 /* 2556 * iwl_mvm_bss_info_changed_station() might call 2557 * iwl_mvm_protect_session(), which reads directly from 2558 * the device (the system time), so make sure it is available. 2559 */ 2560 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2561 return; 2562 2563 mutex_lock(&mvm->mutex); 2564 2565 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2566 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2567 2568 switch (vif->type) { 2569 case NL80211_IFTYPE_STATION: 2570 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2571 break; 2572 case NL80211_IFTYPE_AP: 2573 case NL80211_IFTYPE_ADHOC: 2574 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2575 break; 2576 case NL80211_IFTYPE_MONITOR: 2577 if (changes & BSS_CHANGED_MU_GROUPS) 2578 iwl_mvm_update_mu_groups(mvm, vif); 2579 break; 2580 default: 2581 /* shouldn't happen */ 2582 WARN_ON_ONCE(1); 2583 } 2584 2585 mutex_unlock(&mvm->mutex); 2586 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2587 } 2588 2589 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2590 struct ieee80211_vif *vif, 2591 struct ieee80211_scan_request *hw_req) 2592 { 2593 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2594 int ret; 2595 2596 if (hw_req->req.n_channels == 0 || 2597 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2598 return -EINVAL; 2599 2600 mutex_lock(&mvm->mutex); 2601 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2602 mutex_unlock(&mvm->mutex); 2603 2604 return ret; 2605 } 2606 2607 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2608 struct ieee80211_vif *vif) 2609 { 2610 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2611 2612 mutex_lock(&mvm->mutex); 2613 2614 /* Due to a race condition, it's possible that mac80211 asks 2615 * us to stop a hw_scan when it's already stopped. This can 2616 * happen, for instance, if we stopped the scan ourselves, 2617 * called ieee80211_scan_completed() and the userspace called 2618 * cancel scan scan before ieee80211_scan_work() could run. 2619 * To handle that, simply return if the scan is not running. 2620 */ 2621 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2622 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2623 2624 mutex_unlock(&mvm->mutex); 2625 } 2626 2627 static void 2628 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2629 struct ieee80211_sta *sta, u16 tids, 2630 int num_frames, 2631 enum ieee80211_frame_release_type reason, 2632 bool more_data) 2633 { 2634 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2635 2636 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2637 2638 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2639 tids, more_data, false); 2640 } 2641 2642 static void 2643 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2644 struct ieee80211_sta *sta, u16 tids, 2645 int num_frames, 2646 enum ieee80211_frame_release_type reason, 2647 bool more_data) 2648 { 2649 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2650 2651 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2652 2653 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2654 tids, more_data, true); 2655 } 2656 2657 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2658 enum sta_notify_cmd cmd, 2659 struct ieee80211_sta *sta) 2660 { 2661 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2662 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2663 unsigned long txqs = 0, tids = 0; 2664 int tid; 2665 2666 /* 2667 * If we have TVQM then we get too high queue numbers - luckily 2668 * we really shouldn't get here with that because such hardware 2669 * should have firmware supporting buffer station offload. 2670 */ 2671 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2672 return; 2673 2674 spin_lock_bh(&mvmsta->lock); 2675 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2676 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2677 2678 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2679 continue; 2680 2681 __set_bit(tid_data->txq_id, &txqs); 2682 2683 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2684 continue; 2685 2686 __set_bit(tid, &tids); 2687 } 2688 2689 switch (cmd) { 2690 case STA_NOTIFY_SLEEP: 2691 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2692 ieee80211_sta_set_buffered(sta, tid, true); 2693 2694 if (txqs) 2695 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2696 /* 2697 * The fw updates the STA to be asleep. Tx packets on the Tx 2698 * queues to this station will not be transmitted. The fw will 2699 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2700 */ 2701 break; 2702 case STA_NOTIFY_AWAKE: 2703 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2704 break; 2705 2706 if (txqs) 2707 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2708 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2709 break; 2710 default: 2711 break; 2712 } 2713 spin_unlock_bh(&mvmsta->lock); 2714 } 2715 2716 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2717 struct ieee80211_vif *vif, 2718 enum sta_notify_cmd cmd, 2719 struct ieee80211_sta *sta) 2720 { 2721 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2722 } 2723 2724 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2725 { 2726 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2727 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2728 struct ieee80211_sta *sta; 2729 struct iwl_mvm_sta *mvmsta; 2730 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2731 2732 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2733 return; 2734 2735 rcu_read_lock(); 2736 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2737 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2738 rcu_read_unlock(); 2739 return; 2740 } 2741 2742 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2743 2744 if (!mvmsta->vif || 2745 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2746 rcu_read_unlock(); 2747 return; 2748 } 2749 2750 if (mvmsta->sleeping != sleeping) { 2751 mvmsta->sleeping = sleeping; 2752 __iwl_mvm_mac_sta_notify(mvm->hw, 2753 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2754 sta); 2755 ieee80211_sta_ps_transition(sta, sleeping); 2756 } 2757 2758 if (sleeping) { 2759 switch (notif->type) { 2760 case IWL_MVM_PM_EVENT_AWAKE: 2761 case IWL_MVM_PM_EVENT_ASLEEP: 2762 break; 2763 case IWL_MVM_PM_EVENT_UAPSD: 2764 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2765 break; 2766 case IWL_MVM_PM_EVENT_PS_POLL: 2767 ieee80211_sta_pspoll(sta); 2768 break; 2769 default: 2770 break; 2771 } 2772 } 2773 2774 rcu_read_unlock(); 2775 } 2776 2777 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2778 struct ieee80211_vif *vif, 2779 struct ieee80211_sta *sta) 2780 { 2781 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2782 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2783 2784 /* 2785 * This is called before mac80211 does RCU synchronisation, 2786 * so here we already invalidate our internal RCU-protected 2787 * station pointer. The rest of the code will thus no longer 2788 * be able to find the station this way, and we don't rely 2789 * on further RCU synchronisation after the sta_state() 2790 * callback deleted the station. 2791 */ 2792 mutex_lock(&mvm->mutex); 2793 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2794 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2795 ERR_PTR(-ENOENT)); 2796 2797 mutex_unlock(&mvm->mutex); 2798 } 2799 2800 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2801 const u8 *bssid) 2802 { 2803 int i; 2804 2805 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2806 struct iwl_mvm_tcm_mac *mdata; 2807 2808 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2809 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2810 mdata->opened_rx_ba_sessions = false; 2811 } 2812 2813 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2814 return; 2815 2816 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2817 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2818 return; 2819 } 2820 2821 if (!vif->p2p && 2822 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2823 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2824 return; 2825 } 2826 2827 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2828 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2829 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2830 return; 2831 } 2832 } 2833 2834 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2835 } 2836 2837 static void 2838 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2839 struct ieee80211_vif *vif, u8 *peer_addr, 2840 enum nl80211_tdls_operation action) 2841 { 2842 struct iwl_fw_dbg_trigger_tlv *trig; 2843 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2844 2845 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 2846 FW_DBG_TRIGGER_TDLS); 2847 if (!trig) 2848 return; 2849 2850 tdls_trig = (void *)trig->data; 2851 2852 if (!(tdls_trig->action_bitmap & BIT(action))) 2853 return; 2854 2855 if (tdls_trig->peer_mode && 2856 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2857 return; 2858 2859 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2860 "TDLS event occurred, peer %pM, action %d", 2861 peer_addr, action); 2862 } 2863 2864 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2865 struct iwl_mvm_sta *mvm_sta) 2866 { 2867 struct iwl_mvm_tid_data *tid_data; 2868 struct sk_buff *skb; 2869 int i; 2870 2871 spin_lock_bh(&mvm_sta->lock); 2872 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2873 tid_data = &mvm_sta->tid_data[i]; 2874 2875 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) { 2876 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 2877 2878 /* 2879 * The first deferred frame should've stopped the MAC 2880 * queues, so we should never get a second deferred 2881 * frame for the RA/TID. 2882 */ 2883 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue)); 2884 ieee80211_free_txskb(mvm->hw, skb); 2885 } 2886 } 2887 spin_unlock_bh(&mvm_sta->lock); 2888 } 2889 2890 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2891 struct ieee80211_vif *vif, 2892 struct ieee80211_sta *sta, 2893 enum ieee80211_sta_state old_state, 2894 enum ieee80211_sta_state new_state) 2895 { 2896 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2897 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2898 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2899 int ret; 2900 2901 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2902 sta->addr, old_state, new_state); 2903 2904 /* this would be a mac80211 bug ... but don't crash */ 2905 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2906 return -EINVAL; 2907 2908 /* 2909 * If we are in a STA removal flow and in DQA mode: 2910 * 2911 * This is after the sync_rcu part, so the queues have already been 2912 * flushed. No more TXs on their way in mac80211's path, and no more in 2913 * the queues. 2914 * Also, we won't be getting any new TX frames for this station. 2915 * What we might have are deferred TX frames that need to be taken care 2916 * of. 2917 * 2918 * Drop any still-queued deferred-frame before removing the STA, and 2919 * make sure the worker is no longer handling frames for this STA. 2920 */ 2921 if (old_state == IEEE80211_STA_NONE && 2922 new_state == IEEE80211_STA_NOTEXIST) { 2923 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2924 flush_work(&mvm->add_stream_wk); 2925 2926 /* 2927 * No need to make sure deferred TX indication is off since the 2928 * worker will already remove it if it was on 2929 */ 2930 } 2931 2932 mutex_lock(&mvm->mutex); 2933 /* track whether or not the station is associated */ 2934 mvm_sta->sta_state = new_state; 2935 2936 if (old_state == IEEE80211_STA_NOTEXIST && 2937 new_state == IEEE80211_STA_NONE) { 2938 /* 2939 * Firmware bug - it'll crash if the beacon interval is less 2940 * than 16. We can't avoid connecting at all, so refuse the 2941 * station state change, this will cause mac80211 to abandon 2942 * attempts to connect to this AP, and eventually wpa_s will 2943 * blacklist the AP... 2944 */ 2945 if (vif->type == NL80211_IFTYPE_STATION && 2946 vif->bss_conf.beacon_int < 16) { 2947 IWL_ERR(mvm, 2948 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2949 sta->addr, vif->bss_conf.beacon_int); 2950 ret = -EINVAL; 2951 goto out_unlock; 2952 } 2953 2954 if (sta->tdls && 2955 (vif->p2p || 2956 iwl_mvm_tdls_sta_count(mvm, NULL) == 2957 IWL_MVM_TDLS_STA_COUNT || 2958 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2959 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2960 ret = -EBUSY; 2961 goto out_unlock; 2962 } 2963 2964 ret = iwl_mvm_add_sta(mvm, vif, sta); 2965 if (sta->tdls && ret == 0) { 2966 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2967 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2968 NL80211_TDLS_SETUP); 2969 } 2970 } else if (old_state == IEEE80211_STA_NONE && 2971 new_state == IEEE80211_STA_AUTH) { 2972 /* 2973 * EBS may be disabled due to previous failures reported by FW. 2974 * Reset EBS status here assuming environment has been changed. 2975 */ 2976 mvm->last_ebs_successful = true; 2977 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2978 ret = 0; 2979 } else if (old_state == IEEE80211_STA_AUTH && 2980 new_state == IEEE80211_STA_ASSOC) { 2981 if (vif->type == NL80211_IFTYPE_AP) { 2982 mvmvif->ap_assoc_sta_count++; 2983 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2984 if (vif->bss_conf.he_support && 2985 !iwlwifi_mod_params.disable_11ax) 2986 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 2987 } 2988 2989 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2990 false); 2991 ret = iwl_mvm_update_sta(mvm, vif, sta); 2992 } else if (old_state == IEEE80211_STA_ASSOC && 2993 new_state == IEEE80211_STA_AUTHORIZED) { 2994 2995 /* we don't support TDLS during DCM */ 2996 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2997 iwl_mvm_teardown_tdls_peers(mvm); 2998 2999 if (sta->tdls) 3000 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3001 NL80211_TDLS_ENABLE_LINK); 3002 3003 /* enable beacon filtering */ 3004 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3005 3006 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3007 true); 3008 3009 /* if wep is used, need to set the key for the station now */ 3010 if (vif->type == NL80211_IFTYPE_AP && mvmvif->ap_wep_key) 3011 ret = iwl_mvm_set_sta_key(mvm, vif, sta, 3012 mvmvif->ap_wep_key, 3013 STA_KEY_IDX_INVALID); 3014 else 3015 ret = 0; 3016 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3017 new_state == IEEE80211_STA_ASSOC) { 3018 /* disable beacon filtering */ 3019 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 3020 ret = 0; 3021 } else if (old_state == IEEE80211_STA_ASSOC && 3022 new_state == IEEE80211_STA_AUTH) { 3023 if (vif->type == NL80211_IFTYPE_AP) { 3024 mvmvif->ap_assoc_sta_count--; 3025 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3026 } 3027 ret = 0; 3028 } else if (old_state == IEEE80211_STA_AUTH && 3029 new_state == IEEE80211_STA_NONE) { 3030 ret = 0; 3031 } else if (old_state == IEEE80211_STA_NONE && 3032 new_state == IEEE80211_STA_NOTEXIST) { 3033 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3034 if (sta->tdls) { 3035 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3036 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3037 NL80211_TDLS_DISABLE_LINK); 3038 } 3039 } else { 3040 ret = -EIO; 3041 } 3042 out_unlock: 3043 mutex_unlock(&mvm->mutex); 3044 3045 if (sta->tdls && ret == 0) { 3046 if (old_state == IEEE80211_STA_NOTEXIST && 3047 new_state == IEEE80211_STA_NONE) 3048 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3049 else if (old_state == IEEE80211_STA_NONE && 3050 new_state == IEEE80211_STA_NOTEXIST) 3051 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3052 } 3053 3054 return ret; 3055 } 3056 3057 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3058 { 3059 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3060 3061 mvm->rts_threshold = value; 3062 3063 return 0; 3064 } 3065 3066 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3067 struct ieee80211_vif *vif, 3068 struct ieee80211_sta *sta, u32 changed) 3069 { 3070 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3071 3072 if (vif->type == NL80211_IFTYPE_STATION && 3073 changed & IEEE80211_RC_NSS_CHANGED) 3074 iwl_mvm_sf_update(mvm, vif, false); 3075 } 3076 3077 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3078 struct ieee80211_vif *vif, u16 ac, 3079 const struct ieee80211_tx_queue_params *params) 3080 { 3081 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3082 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3083 3084 mvmvif->queue_params[ac] = *params; 3085 3086 /* 3087 * No need to update right away, we'll get BSS_CHANGED_QOS 3088 * The exception is P2P_DEVICE interface which needs immediate update. 3089 */ 3090 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3091 int ret; 3092 3093 mutex_lock(&mvm->mutex); 3094 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3095 mutex_unlock(&mvm->mutex); 3096 return ret; 3097 } 3098 return 0; 3099 } 3100 3101 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3102 struct ieee80211_vif *vif, 3103 u16 req_duration) 3104 { 3105 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3106 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3107 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3108 3109 /* 3110 * iwl_mvm_protect_session() reads directly from the device 3111 * (the system time), so make sure it is available. 3112 */ 3113 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 3114 return; 3115 3116 if (req_duration > duration) 3117 duration = req_duration; 3118 3119 mutex_lock(&mvm->mutex); 3120 /* Try really hard to protect the session and hear a beacon */ 3121 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 3122 mutex_unlock(&mvm->mutex); 3123 3124 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 3125 } 3126 3127 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3128 struct ieee80211_vif *vif, 3129 struct cfg80211_sched_scan_request *req, 3130 struct ieee80211_scan_ies *ies) 3131 { 3132 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3133 3134 int ret; 3135 3136 mutex_lock(&mvm->mutex); 3137 3138 if (!vif->bss_conf.idle) { 3139 ret = -EBUSY; 3140 goto out; 3141 } 3142 3143 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3144 3145 out: 3146 mutex_unlock(&mvm->mutex); 3147 return ret; 3148 } 3149 3150 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3151 struct ieee80211_vif *vif) 3152 { 3153 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3154 int ret; 3155 3156 mutex_lock(&mvm->mutex); 3157 3158 /* Due to a race condition, it's possible that mac80211 asks 3159 * us to stop a sched_scan when it's already stopped. This 3160 * can happen, for instance, if we stopped the scan ourselves, 3161 * called ieee80211_sched_scan_stopped() and the userspace called 3162 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3163 * could run. To handle this, simply return if the scan is 3164 * not running. 3165 */ 3166 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3167 mutex_unlock(&mvm->mutex); 3168 return 0; 3169 } 3170 3171 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3172 mutex_unlock(&mvm->mutex); 3173 iwl_mvm_wait_for_async_handlers(mvm); 3174 3175 return ret; 3176 } 3177 3178 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3179 enum set_key_cmd cmd, 3180 struct ieee80211_vif *vif, 3181 struct ieee80211_sta *sta, 3182 struct ieee80211_key_conf *key) 3183 { 3184 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3185 struct iwl_mvm_sta *mvmsta; 3186 struct iwl_mvm_key_pn *ptk_pn; 3187 int keyidx = key->keyidx; 3188 int ret; 3189 u8 key_offset; 3190 3191 if (iwlwifi_mod_params.swcrypto) { 3192 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 3193 return -EOPNOTSUPP; 3194 } 3195 3196 switch (key->cipher) { 3197 case WLAN_CIPHER_SUITE_TKIP: 3198 if (!mvm->trans->cfg->gen2) { 3199 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3200 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3201 } else if (vif->type == NL80211_IFTYPE_STATION) { 3202 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3203 } else { 3204 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3205 return -EOPNOTSUPP; 3206 } 3207 break; 3208 case WLAN_CIPHER_SUITE_CCMP: 3209 case WLAN_CIPHER_SUITE_GCMP: 3210 case WLAN_CIPHER_SUITE_GCMP_256: 3211 if (!iwl_mvm_has_new_tx_api(mvm)) 3212 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3213 break; 3214 case WLAN_CIPHER_SUITE_AES_CMAC: 3215 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3216 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3217 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3218 break; 3219 case WLAN_CIPHER_SUITE_WEP40: 3220 case WLAN_CIPHER_SUITE_WEP104: 3221 if (vif->type == NL80211_IFTYPE_AP) { 3222 struct iwl_mvm_vif *mvmvif = 3223 iwl_mvm_vif_from_mac80211(vif); 3224 3225 mvmvif->ap_wep_key = kmemdup(key, 3226 sizeof(*key) + key->keylen, 3227 GFP_KERNEL); 3228 if (!mvmvif->ap_wep_key) 3229 return -ENOMEM; 3230 } 3231 3232 if (vif->type != NL80211_IFTYPE_STATION) 3233 return 0; 3234 break; 3235 default: 3236 /* currently FW supports only one optional cipher scheme */ 3237 if (hw->n_cipher_schemes && 3238 hw->cipher_schemes->cipher == key->cipher) 3239 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3240 else 3241 return -EOPNOTSUPP; 3242 } 3243 3244 mutex_lock(&mvm->mutex); 3245 3246 switch (cmd) { 3247 case SET_KEY: 3248 if ((vif->type == NL80211_IFTYPE_ADHOC || 3249 vif->type == NL80211_IFTYPE_AP) && !sta) { 3250 /* 3251 * GTK on AP interface is a TX-only key, return 0; 3252 * on IBSS they're per-station and because we're lazy 3253 * we don't support them for RX, so do the same. 3254 * CMAC/GMAC in AP/IBSS modes must be done in software. 3255 */ 3256 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3257 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3258 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3259 ret = -EOPNOTSUPP; 3260 else 3261 ret = 0; 3262 3263 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3264 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3265 !iwl_mvm_has_new_tx_api(mvm)) { 3266 key->hw_key_idx = STA_KEY_IDX_INVALID; 3267 break; 3268 } 3269 } 3270 3271 /* During FW restart, in order to restore the state as it was, 3272 * don't try to reprogram keys we previously failed for. 3273 */ 3274 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3275 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3276 IWL_DEBUG_MAC80211(mvm, 3277 "skip invalid idx key programming during restart\n"); 3278 ret = 0; 3279 break; 3280 } 3281 3282 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3283 sta && iwl_mvm_has_new_rx_api(mvm) && 3284 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3285 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3286 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3287 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3288 struct ieee80211_key_seq seq; 3289 int tid, q; 3290 3291 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3292 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3293 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3294 mvm->trans->num_rx_queues), 3295 GFP_KERNEL); 3296 if (!ptk_pn) { 3297 ret = -ENOMEM; 3298 break; 3299 } 3300 3301 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3302 ieee80211_get_key_rx_seq(key, tid, &seq); 3303 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3304 memcpy(ptk_pn->q[q].pn[tid], 3305 seq.ccmp.pn, 3306 IEEE80211_CCMP_PN_LEN); 3307 } 3308 3309 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3310 } 3311 3312 /* in HW restart reuse the index, otherwise request a new one */ 3313 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3314 key_offset = key->hw_key_idx; 3315 else 3316 key_offset = STA_KEY_IDX_INVALID; 3317 3318 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3319 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3320 if (ret) { 3321 IWL_WARN(mvm, "set key failed\n"); 3322 /* 3323 * can't add key for RX, but we don't need it 3324 * in the device for TX so still return 0 3325 */ 3326 key->hw_key_idx = STA_KEY_IDX_INVALID; 3327 ret = 0; 3328 } 3329 3330 break; 3331 case DISABLE_KEY: 3332 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3333 ret = 0; 3334 break; 3335 } 3336 3337 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3338 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3339 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3340 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3341 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3342 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3343 ptk_pn = rcu_dereference_protected( 3344 mvmsta->ptk_pn[keyidx], 3345 lockdep_is_held(&mvm->mutex)); 3346 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3347 if (ptk_pn) 3348 kfree_rcu(ptk_pn, rcu_head); 3349 } 3350 3351 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3352 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3353 break; 3354 default: 3355 ret = -EINVAL; 3356 } 3357 3358 mutex_unlock(&mvm->mutex); 3359 return ret; 3360 } 3361 3362 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3363 struct ieee80211_vif *vif, 3364 struct ieee80211_key_conf *keyconf, 3365 struct ieee80211_sta *sta, 3366 u32 iv32, u16 *phase1key) 3367 { 3368 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3369 3370 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3371 return; 3372 3373 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3374 } 3375 3376 3377 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3378 struct iwl_rx_packet *pkt, void *data) 3379 { 3380 struct iwl_mvm *mvm = 3381 container_of(notif_wait, struct iwl_mvm, notif_wait); 3382 struct iwl_hs20_roc_res *resp; 3383 int resp_len = iwl_rx_packet_payload_len(pkt); 3384 struct iwl_mvm_time_event_data *te_data = data; 3385 3386 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3387 return true; 3388 3389 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3390 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3391 return true; 3392 } 3393 3394 resp = (void *)pkt->data; 3395 3396 IWL_DEBUG_TE(mvm, 3397 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3398 resp->status, resp->event_unique_id); 3399 3400 te_data->uid = le32_to_cpu(resp->event_unique_id); 3401 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3402 te_data->uid); 3403 3404 spin_lock_bh(&mvm->time_event_lock); 3405 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3406 spin_unlock_bh(&mvm->time_event_lock); 3407 3408 return true; 3409 } 3410 3411 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3412 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3413 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3414 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3415 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3416 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3417 struct ieee80211_channel *channel, 3418 struct ieee80211_vif *vif, 3419 int duration) 3420 { 3421 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3422 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3423 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3424 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3425 struct iwl_notification_wait wait_time_event; 3426 u32 dtim_interval = vif->bss_conf.dtim_period * 3427 vif->bss_conf.beacon_int; 3428 u32 req_dur, delay; 3429 struct iwl_hs20_roc_req aux_roc_req = { 3430 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3431 .id_and_color = 3432 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3433 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3434 /* Set the channel info data */ 3435 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3436 PHY_BAND_24 : PHY_BAND_5, 3437 .channel_info.channel = channel->hw_value, 3438 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3439 /* Set the time and duration */ 3440 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3441 }; 3442 3443 delay = AUX_ROC_MIN_DELAY; 3444 req_dur = MSEC_TO_TU(duration); 3445 3446 /* 3447 * If we are associated we want the delay time to be at least one 3448 * dtim interval so that the FW can wait until after the DTIM and 3449 * then start the time event, this will potentially allow us to 3450 * remain off-channel for the max duration. 3451 * Since we want to use almost a whole dtim interval we would also 3452 * like the delay to be for 2-3 dtim intervals, in case there are 3453 * other time events with higher priority. 3454 */ 3455 if (vif->bss_conf.assoc) { 3456 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3457 /* We cannot remain off-channel longer than the DTIM interval */ 3458 if (dtim_interval <= req_dur) { 3459 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3460 if (req_dur <= AUX_ROC_MIN_DURATION) 3461 req_dur = dtim_interval - 3462 AUX_ROC_MIN_SAFETY_BUFFER; 3463 } 3464 } 3465 3466 aux_roc_req.duration = cpu_to_le32(req_dur); 3467 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3468 3469 IWL_DEBUG_TE(mvm, 3470 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3471 channel->hw_value, req_dur, duration, delay, 3472 dtim_interval); 3473 /* Set the node address */ 3474 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3475 3476 lockdep_assert_held(&mvm->mutex); 3477 3478 spin_lock_bh(&mvm->time_event_lock); 3479 3480 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3481 spin_unlock_bh(&mvm->time_event_lock); 3482 return -EIO; 3483 } 3484 3485 te_data->vif = vif; 3486 te_data->duration = duration; 3487 te_data->id = HOT_SPOT_CMD; 3488 3489 spin_unlock_bh(&mvm->time_event_lock); 3490 3491 /* 3492 * Use a notification wait, which really just processes the 3493 * command response and doesn't wait for anything, in order 3494 * to be able to process the response and get the UID inside 3495 * the RX path. Using CMD_WANT_SKB doesn't work because it 3496 * stores the buffer and then wakes up this thread, by which 3497 * time another notification (that the time event started) 3498 * might already be processed unsuccessfully. 3499 */ 3500 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3501 time_event_response, 3502 ARRAY_SIZE(time_event_response), 3503 iwl_mvm_rx_aux_roc, te_data); 3504 3505 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3506 &aux_roc_req); 3507 3508 if (res) { 3509 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3510 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3511 goto out_clear_te; 3512 } 3513 3514 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3515 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3516 /* should never fail */ 3517 WARN_ON_ONCE(res); 3518 3519 if (res) { 3520 out_clear_te: 3521 spin_lock_bh(&mvm->time_event_lock); 3522 iwl_mvm_te_clear_data(mvm, te_data); 3523 spin_unlock_bh(&mvm->time_event_lock); 3524 } 3525 3526 return res; 3527 } 3528 3529 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3530 struct ieee80211_vif *vif, 3531 struct ieee80211_channel *channel, 3532 int duration, 3533 enum ieee80211_roc_type type) 3534 { 3535 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3536 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3537 struct cfg80211_chan_def chandef; 3538 struct iwl_mvm_phy_ctxt *phy_ctxt; 3539 int ret, i; 3540 3541 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3542 duration, type); 3543 3544 /* 3545 * Flush the done work, just in case it's still pending, so that 3546 * the work it does can complete and we can accept new frames. 3547 */ 3548 flush_work(&mvm->roc_done_wk); 3549 3550 mutex_lock(&mvm->mutex); 3551 3552 switch (vif->type) { 3553 case NL80211_IFTYPE_STATION: 3554 if (fw_has_capa(&mvm->fw->ucode_capa, 3555 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3556 /* Use aux roc framework (HS20) */ 3557 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3558 vif, duration); 3559 goto out_unlock; 3560 } 3561 IWL_ERR(mvm, "hotspot not supported\n"); 3562 ret = -EINVAL; 3563 goto out_unlock; 3564 case NL80211_IFTYPE_P2P_DEVICE: 3565 /* handle below */ 3566 break; 3567 default: 3568 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3569 ret = -EINVAL; 3570 goto out_unlock; 3571 } 3572 3573 for (i = 0; i < NUM_PHY_CTX; i++) { 3574 phy_ctxt = &mvm->phy_ctxts[i]; 3575 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3576 continue; 3577 3578 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3579 /* 3580 * Unbind the P2P_DEVICE from the current PHY context, 3581 * and if the PHY context is not used remove it. 3582 */ 3583 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3584 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3585 goto out_unlock; 3586 3587 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3588 3589 /* Bind the P2P_DEVICE to the current PHY Context */ 3590 mvmvif->phy_ctxt = phy_ctxt; 3591 3592 ret = iwl_mvm_binding_add_vif(mvm, vif); 3593 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3594 goto out_unlock; 3595 3596 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3597 goto schedule_time_event; 3598 } 3599 } 3600 3601 /* Need to update the PHY context only if the ROC channel changed */ 3602 if (channel == mvmvif->phy_ctxt->channel) 3603 goto schedule_time_event; 3604 3605 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3606 3607 /* 3608 * Change the PHY context configuration as it is currently referenced 3609 * only by the P2P Device MAC 3610 */ 3611 if (mvmvif->phy_ctxt->ref == 1) { 3612 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3613 &chandef, 1, 1); 3614 if (ret) 3615 goto out_unlock; 3616 } else { 3617 /* 3618 * The PHY context is shared with other MACs. Need to remove the 3619 * P2P Device from the binding, allocate an new PHY context and 3620 * create a new binding 3621 */ 3622 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3623 if (!phy_ctxt) { 3624 ret = -ENOSPC; 3625 goto out_unlock; 3626 } 3627 3628 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3629 1, 1); 3630 if (ret) { 3631 IWL_ERR(mvm, "Failed to change PHY context\n"); 3632 goto out_unlock; 3633 } 3634 3635 /* Unbind the P2P_DEVICE from the current PHY context */ 3636 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3637 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3638 goto out_unlock; 3639 3640 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3641 3642 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3643 mvmvif->phy_ctxt = phy_ctxt; 3644 3645 ret = iwl_mvm_binding_add_vif(mvm, vif); 3646 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3647 goto out_unlock; 3648 3649 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3650 } 3651 3652 schedule_time_event: 3653 /* Schedule the time events */ 3654 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3655 3656 out_unlock: 3657 mutex_unlock(&mvm->mutex); 3658 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3659 return ret; 3660 } 3661 3662 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3663 { 3664 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3665 3666 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3667 3668 mutex_lock(&mvm->mutex); 3669 iwl_mvm_stop_roc(mvm); 3670 mutex_unlock(&mvm->mutex); 3671 3672 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3673 return 0; 3674 } 3675 3676 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3677 struct ieee80211_chanctx_conf *ctx) 3678 { 3679 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3680 struct iwl_mvm_phy_ctxt *phy_ctxt; 3681 int ret; 3682 3683 lockdep_assert_held(&mvm->mutex); 3684 3685 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3686 3687 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3688 if (!phy_ctxt) { 3689 ret = -ENOSPC; 3690 goto out; 3691 } 3692 3693 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3694 ctx->rx_chains_static, 3695 ctx->rx_chains_dynamic); 3696 if (ret) { 3697 IWL_ERR(mvm, "Failed to add PHY context\n"); 3698 goto out; 3699 } 3700 3701 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3702 *phy_ctxt_id = phy_ctxt->id; 3703 out: 3704 return ret; 3705 } 3706 3707 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3708 struct ieee80211_chanctx_conf *ctx) 3709 { 3710 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3711 int ret; 3712 3713 mutex_lock(&mvm->mutex); 3714 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3715 mutex_unlock(&mvm->mutex); 3716 3717 return ret; 3718 } 3719 3720 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3721 struct ieee80211_chanctx_conf *ctx) 3722 { 3723 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3724 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3725 3726 lockdep_assert_held(&mvm->mutex); 3727 3728 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3729 } 3730 3731 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3732 struct ieee80211_chanctx_conf *ctx) 3733 { 3734 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3735 3736 mutex_lock(&mvm->mutex); 3737 __iwl_mvm_remove_chanctx(mvm, ctx); 3738 mutex_unlock(&mvm->mutex); 3739 } 3740 3741 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3742 struct ieee80211_chanctx_conf *ctx, 3743 u32 changed) 3744 { 3745 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3746 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3747 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3748 3749 if (WARN_ONCE((phy_ctxt->ref > 1) && 3750 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3751 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3752 IEEE80211_CHANCTX_CHANGE_RADAR | 3753 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3754 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3755 phy_ctxt->ref, changed)) 3756 return; 3757 3758 mutex_lock(&mvm->mutex); 3759 3760 /* we are only changing the min_width, may be a noop */ 3761 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 3762 if (phy_ctxt->width == ctx->min_def.width) 3763 goto out_unlock; 3764 3765 /* we are just toggling between 20_NOHT and 20 */ 3766 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 3767 ctx->min_def.width <= NL80211_CHAN_WIDTH_20) 3768 goto out_unlock; 3769 } 3770 3771 iwl_mvm_bt_coex_vif_change(mvm); 3772 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3773 ctx->rx_chains_static, 3774 ctx->rx_chains_dynamic); 3775 3776 out_unlock: 3777 mutex_unlock(&mvm->mutex); 3778 } 3779 3780 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3781 struct ieee80211_vif *vif, 3782 struct ieee80211_chanctx_conf *ctx, 3783 bool switching_chanctx) 3784 { 3785 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3786 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3787 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3788 int ret; 3789 3790 lockdep_assert_held(&mvm->mutex); 3791 3792 mvmvif->phy_ctxt = phy_ctxt; 3793 3794 switch (vif->type) { 3795 case NL80211_IFTYPE_AP: 3796 /* only needed if we're switching chanctx (i.e. during CSA) */ 3797 if (switching_chanctx) { 3798 mvmvif->ap_ibss_active = true; 3799 break; 3800 } 3801 case NL80211_IFTYPE_ADHOC: 3802 /* 3803 * The AP binding flow is handled as part of the start_ap flow 3804 * (in bss_info_changed), similarly for IBSS. 3805 */ 3806 ret = 0; 3807 goto out; 3808 case NL80211_IFTYPE_STATION: 3809 mvmvif->csa_bcn_pending = false; 3810 break; 3811 case NL80211_IFTYPE_MONITOR: 3812 /* always disable PS when a monitor interface is active */ 3813 mvmvif->ps_disabled = true; 3814 break; 3815 default: 3816 ret = -EINVAL; 3817 goto out; 3818 } 3819 3820 ret = iwl_mvm_binding_add_vif(mvm, vif); 3821 if (ret) 3822 goto out; 3823 3824 /* 3825 * Power state must be updated before quotas, 3826 * otherwise fw will complain. 3827 */ 3828 iwl_mvm_power_update_mac(mvm); 3829 3830 /* Setting the quota at this stage is only required for monitor 3831 * interfaces. For the other types, the bss_info changed flow 3832 * will handle quota settings. 3833 */ 3834 if (vif->type == NL80211_IFTYPE_MONITOR) { 3835 mvmvif->monitor_active = true; 3836 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3837 if (ret) 3838 goto out_remove_binding; 3839 3840 ret = iwl_mvm_add_snif_sta(mvm, vif); 3841 if (ret) 3842 goto out_remove_binding; 3843 3844 } 3845 3846 /* Handle binding during CSA */ 3847 if (vif->type == NL80211_IFTYPE_AP) { 3848 iwl_mvm_update_quotas(mvm, false, NULL); 3849 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3850 } 3851 3852 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3853 u32 duration = 3 * vif->bss_conf.beacon_int; 3854 3855 /* iwl_mvm_protect_session() reads directly from the 3856 * device (the system time), so make sure it is 3857 * available. 3858 */ 3859 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3860 if (ret) 3861 goto out_remove_binding; 3862 3863 /* Protect the session to make sure we hear the first 3864 * beacon on the new channel. 3865 */ 3866 mvmvif->csa_bcn_pending = true; 3867 iwl_mvm_protect_session(mvm, vif, duration, duration, 3868 vif->bss_conf.beacon_int / 2, 3869 true); 3870 3871 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3872 3873 iwl_mvm_update_quotas(mvm, false, NULL); 3874 } 3875 3876 goto out; 3877 3878 out_remove_binding: 3879 iwl_mvm_binding_remove_vif(mvm, vif); 3880 iwl_mvm_power_update_mac(mvm); 3881 out: 3882 if (ret) 3883 mvmvif->phy_ctxt = NULL; 3884 return ret; 3885 } 3886 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3887 struct ieee80211_vif *vif, 3888 struct ieee80211_chanctx_conf *ctx) 3889 { 3890 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3891 int ret; 3892 3893 mutex_lock(&mvm->mutex); 3894 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3895 mutex_unlock(&mvm->mutex); 3896 3897 return ret; 3898 } 3899 3900 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3901 struct ieee80211_vif *vif, 3902 struct ieee80211_chanctx_conf *ctx, 3903 bool switching_chanctx) 3904 { 3905 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3906 struct ieee80211_vif *disabled_vif = NULL; 3907 3908 lockdep_assert_held(&mvm->mutex); 3909 3910 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3911 3912 switch (vif->type) { 3913 case NL80211_IFTYPE_ADHOC: 3914 goto out; 3915 case NL80211_IFTYPE_MONITOR: 3916 mvmvif->monitor_active = false; 3917 mvmvif->ps_disabled = false; 3918 iwl_mvm_rm_snif_sta(mvm, vif); 3919 break; 3920 case NL80211_IFTYPE_AP: 3921 /* This part is triggered only during CSA */ 3922 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3923 goto out; 3924 3925 mvmvif->csa_countdown = false; 3926 3927 /* Set CS bit on all the stations */ 3928 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3929 3930 /* Save blocked iface, the timeout is set on the next beacon */ 3931 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3932 3933 mvmvif->ap_ibss_active = false; 3934 break; 3935 case NL80211_IFTYPE_STATION: 3936 if (!switching_chanctx) 3937 break; 3938 3939 disabled_vif = vif; 3940 3941 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3942 break; 3943 default: 3944 break; 3945 } 3946 3947 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3948 iwl_mvm_binding_remove_vif(mvm, vif); 3949 3950 out: 3951 mvmvif->phy_ctxt = NULL; 3952 iwl_mvm_power_update_mac(mvm); 3953 } 3954 3955 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3956 struct ieee80211_vif *vif, 3957 struct ieee80211_chanctx_conf *ctx) 3958 { 3959 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3960 3961 mutex_lock(&mvm->mutex); 3962 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3963 mutex_unlock(&mvm->mutex); 3964 } 3965 3966 static int 3967 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3968 struct ieee80211_vif_chanctx_switch *vifs) 3969 { 3970 int ret; 3971 3972 mutex_lock(&mvm->mutex); 3973 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3974 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3975 3976 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3977 if (ret) { 3978 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3979 goto out_reassign; 3980 } 3981 3982 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3983 true); 3984 if (ret) { 3985 IWL_ERR(mvm, 3986 "failed to assign new_ctx during channel switch\n"); 3987 goto out_remove; 3988 } 3989 3990 /* we don't support TDLS during DCM - can be caused by channel switch */ 3991 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3992 iwl_mvm_teardown_tdls_peers(mvm); 3993 3994 goto out; 3995 3996 out_remove: 3997 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3998 3999 out_reassign: 4000 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4001 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4002 goto out_restart; 4003 } 4004 4005 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4006 true)) { 4007 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4008 goto out_restart; 4009 } 4010 4011 goto out; 4012 4013 out_restart: 4014 /* things keep failing, better restart the hw */ 4015 iwl_mvm_nic_restart(mvm, false); 4016 4017 out: 4018 mutex_unlock(&mvm->mutex); 4019 4020 return ret; 4021 } 4022 4023 static int 4024 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4025 struct ieee80211_vif_chanctx_switch *vifs) 4026 { 4027 int ret; 4028 4029 mutex_lock(&mvm->mutex); 4030 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4031 4032 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4033 true); 4034 if (ret) { 4035 IWL_ERR(mvm, 4036 "failed to assign new_ctx during channel switch\n"); 4037 goto out_reassign; 4038 } 4039 4040 goto out; 4041 4042 out_reassign: 4043 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4044 true)) { 4045 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4046 goto out_restart; 4047 } 4048 4049 goto out; 4050 4051 out_restart: 4052 /* things keep failing, better restart the hw */ 4053 iwl_mvm_nic_restart(mvm, false); 4054 4055 out: 4056 mutex_unlock(&mvm->mutex); 4057 4058 return ret; 4059 } 4060 4061 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4062 struct ieee80211_vif_chanctx_switch *vifs, 4063 int n_vifs, 4064 enum ieee80211_chanctx_switch_mode mode) 4065 { 4066 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4067 int ret; 4068 4069 /* we only support a single-vif right now */ 4070 if (n_vifs > 1) 4071 return -EOPNOTSUPP; 4072 4073 switch (mode) { 4074 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4075 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4076 break; 4077 case CHANCTX_SWMODE_REASSIGN_VIF: 4078 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4079 break; 4080 default: 4081 ret = -EOPNOTSUPP; 4082 break; 4083 } 4084 4085 return ret; 4086 } 4087 4088 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4089 { 4090 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4091 4092 return mvm->ibss_manager; 4093 } 4094 4095 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4096 struct ieee80211_sta *sta, 4097 bool set) 4098 { 4099 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4100 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4101 4102 if (!mvm_sta || !mvm_sta->vif) { 4103 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4104 return -EINVAL; 4105 } 4106 4107 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4108 } 4109 4110 #ifdef CONFIG_NL80211_TESTMODE 4111 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4112 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4113 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4114 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4115 }; 4116 4117 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4118 struct ieee80211_vif *vif, 4119 void *data, int len) 4120 { 4121 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4122 int err; 4123 u32 noa_duration; 4124 4125 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy, 4126 NULL); 4127 if (err) 4128 return err; 4129 4130 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4131 return -EINVAL; 4132 4133 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4134 case IWL_MVM_TM_CMD_SET_NOA: 4135 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4136 !vif->bss_conf.enable_beacon || 4137 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4138 return -EINVAL; 4139 4140 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4141 if (noa_duration >= vif->bss_conf.beacon_int) 4142 return -EINVAL; 4143 4144 mvm->noa_duration = noa_duration; 4145 mvm->noa_vif = vif; 4146 4147 return iwl_mvm_update_quotas(mvm, true, NULL); 4148 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4149 /* must be associated client vif - ignore authorized */ 4150 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4151 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4152 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4153 return -EINVAL; 4154 4155 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4156 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4157 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4158 } 4159 4160 return -EOPNOTSUPP; 4161 } 4162 4163 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4164 struct ieee80211_vif *vif, 4165 void *data, int len) 4166 { 4167 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4168 int err; 4169 4170 mutex_lock(&mvm->mutex); 4171 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4172 mutex_unlock(&mvm->mutex); 4173 4174 return err; 4175 } 4176 #endif 4177 4178 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4179 struct ieee80211_vif *vif, 4180 struct ieee80211_channel_switch *chsw) 4181 { 4182 /* By implementing this operation, we prevent mac80211 from 4183 * starting its own channel switch timer, so that we can call 4184 * ieee80211_chswitch_done() ourselves at the right time 4185 * (which is when the absence time event starts). 4186 */ 4187 4188 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4189 "dummy channel switch op\n"); 4190 } 4191 4192 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4193 struct ieee80211_vif *vif, 4194 struct ieee80211_channel_switch *chsw) 4195 { 4196 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4197 struct ieee80211_vif *csa_vif; 4198 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4199 u32 apply_time; 4200 int ret; 4201 4202 mutex_lock(&mvm->mutex); 4203 4204 mvmvif->csa_failed = false; 4205 4206 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4207 chsw->chandef.center_freq1); 4208 4209 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4210 ieee80211_vif_to_wdev(vif), 4211 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4212 4213 switch (vif->type) { 4214 case NL80211_IFTYPE_AP: 4215 csa_vif = 4216 rcu_dereference_protected(mvm->csa_vif, 4217 lockdep_is_held(&mvm->mutex)); 4218 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4219 "Another CSA is already in progress")) { 4220 ret = -EBUSY; 4221 goto out_unlock; 4222 } 4223 4224 /* we still didn't unblock tx. prevent new CS meanwhile */ 4225 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4226 lockdep_is_held(&mvm->mutex))) { 4227 ret = -EBUSY; 4228 goto out_unlock; 4229 } 4230 4231 rcu_assign_pointer(mvm->csa_vif, vif); 4232 4233 if (WARN_ONCE(mvmvif->csa_countdown, 4234 "Previous CSA countdown didn't complete")) { 4235 ret = -EBUSY; 4236 goto out_unlock; 4237 } 4238 4239 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4240 4241 break; 4242 case NL80211_IFTYPE_STATION: 4243 /* Schedule the time event to a bit before beacon 1, 4244 * to make sure we're in the new channel when the 4245 * GO/AP arrives. In case count <= 1 immediately schedule the 4246 * TE (this might result with some packet loss or connection 4247 * loss). 4248 */ 4249 if (chsw->count <= 1) 4250 apply_time = 0; 4251 else 4252 apply_time = chsw->device_timestamp + 4253 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4254 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4255 4256 if (chsw->block_tx) 4257 iwl_mvm_csa_client_absent(mvm, vif); 4258 4259 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4260 apply_time); 4261 if (mvmvif->bf_data.bf_enabled) { 4262 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4263 if (ret) 4264 goto out_unlock; 4265 } 4266 4267 break; 4268 default: 4269 break; 4270 } 4271 4272 mvmvif->ps_disabled = true; 4273 4274 ret = iwl_mvm_power_update_ps(mvm); 4275 if (ret) 4276 goto out_unlock; 4277 4278 /* we won't be on this channel any longer */ 4279 iwl_mvm_teardown_tdls_peers(mvm); 4280 4281 out_unlock: 4282 mutex_unlock(&mvm->mutex); 4283 4284 return ret; 4285 } 4286 4287 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 4288 struct ieee80211_vif *vif) 4289 { 4290 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4292 int ret; 4293 4294 mutex_lock(&mvm->mutex); 4295 4296 if (mvmvif->csa_failed) { 4297 mvmvif->csa_failed = false; 4298 ret = -EIO; 4299 goto out_unlock; 4300 } 4301 4302 if (vif->type == NL80211_IFTYPE_STATION) { 4303 struct iwl_mvm_sta *mvmsta; 4304 4305 mvmvif->csa_bcn_pending = false; 4306 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 4307 mvmvif->ap_sta_id); 4308 4309 if (WARN_ON(!mvmsta)) { 4310 ret = -EIO; 4311 goto out_unlock; 4312 } 4313 4314 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 4315 4316 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4317 4318 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4319 if (ret) 4320 goto out_unlock; 4321 4322 iwl_mvm_stop_session_protection(mvm, vif); 4323 } 4324 4325 mvmvif->ps_disabled = false; 4326 4327 ret = iwl_mvm_power_update_ps(mvm); 4328 4329 out_unlock: 4330 mutex_unlock(&mvm->mutex); 4331 4332 return ret; 4333 } 4334 4335 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4336 { 4337 int i; 4338 4339 if (!iwl_mvm_has_new_tx_api(mvm)) { 4340 if (drop) { 4341 mutex_lock(&mvm->mutex); 4342 iwl_mvm_flush_tx_path(mvm, 4343 iwl_mvm_flushable_queues(mvm) & queues, 0); 4344 mutex_unlock(&mvm->mutex); 4345 } else { 4346 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4347 } 4348 return; 4349 } 4350 4351 mutex_lock(&mvm->mutex); 4352 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4353 struct ieee80211_sta *sta; 4354 4355 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4356 lockdep_is_held(&mvm->mutex)); 4357 if (IS_ERR_OR_NULL(sta)) 4358 continue; 4359 4360 if (drop) 4361 iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0); 4362 else 4363 iwl_mvm_wait_sta_queues_empty(mvm, 4364 iwl_mvm_sta_from_mac80211(sta)); 4365 } 4366 mutex_unlock(&mvm->mutex); 4367 } 4368 4369 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4370 struct ieee80211_vif *vif, u32 queues, bool drop) 4371 { 4372 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4373 struct iwl_mvm_vif *mvmvif; 4374 struct iwl_mvm_sta *mvmsta; 4375 struct ieee80211_sta *sta; 4376 int i; 4377 u32 msk = 0; 4378 4379 if (!vif) { 4380 iwl_mvm_flush_no_vif(mvm, queues, drop); 4381 return; 4382 } 4383 4384 if (vif->type != NL80211_IFTYPE_STATION) 4385 return; 4386 4387 /* Make sure we're done with the deferred traffic before flushing */ 4388 flush_work(&mvm->add_stream_wk); 4389 4390 mutex_lock(&mvm->mutex); 4391 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4392 4393 /* flush the AP-station and all TDLS peers */ 4394 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4395 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4396 lockdep_is_held(&mvm->mutex)); 4397 if (IS_ERR_OR_NULL(sta)) 4398 continue; 4399 4400 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4401 if (mvmsta->vif != vif) 4402 continue; 4403 4404 /* make sure only TDLS peers or the AP are flushed */ 4405 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4406 4407 if (drop) { 4408 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4409 IWL_ERR(mvm, "flush request fail\n"); 4410 } else { 4411 msk |= mvmsta->tfd_queue_msk; 4412 if (iwl_mvm_has_new_tx_api(mvm)) 4413 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4414 } 4415 } 4416 4417 mutex_unlock(&mvm->mutex); 4418 4419 /* this can take a while, and we may need/want other operations 4420 * to succeed while doing this, so do it without the mutex held 4421 */ 4422 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4423 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4424 } 4425 4426 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4427 struct survey_info *survey) 4428 { 4429 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4430 int ret; 4431 4432 memset(survey, 0, sizeof(*survey)); 4433 4434 /* only support global statistics right now */ 4435 if (idx != 0) 4436 return -ENOENT; 4437 4438 if (!fw_has_capa(&mvm->fw->ucode_capa, 4439 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4440 return -ENOENT; 4441 4442 mutex_lock(&mvm->mutex); 4443 4444 if (iwl_mvm_firmware_running(mvm)) { 4445 ret = iwl_mvm_request_statistics(mvm, false); 4446 if (ret) 4447 goto out; 4448 } 4449 4450 survey->filled = SURVEY_INFO_TIME | 4451 SURVEY_INFO_TIME_RX | 4452 SURVEY_INFO_TIME_TX | 4453 SURVEY_INFO_TIME_SCAN; 4454 survey->time = mvm->accu_radio_stats.on_time_rf + 4455 mvm->radio_stats.on_time_rf; 4456 do_div(survey->time, USEC_PER_MSEC); 4457 4458 survey->time_rx = mvm->accu_radio_stats.rx_time + 4459 mvm->radio_stats.rx_time; 4460 do_div(survey->time_rx, USEC_PER_MSEC); 4461 4462 survey->time_tx = mvm->accu_radio_stats.tx_time + 4463 mvm->radio_stats.tx_time; 4464 do_div(survey->time_tx, USEC_PER_MSEC); 4465 4466 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4467 mvm->radio_stats.on_time_scan; 4468 do_div(survey->time_scan, USEC_PER_MSEC); 4469 4470 ret = 0; 4471 out: 4472 mutex_unlock(&mvm->mutex); 4473 return ret; 4474 } 4475 4476 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4477 struct ieee80211_vif *vif, 4478 struct ieee80211_sta *sta, 4479 struct station_info *sinfo) 4480 { 4481 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4482 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4483 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4484 4485 if (mvmsta->avg_energy) { 4486 sinfo->signal_avg = mvmsta->avg_energy; 4487 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4488 } 4489 4490 /* if beacon filtering isn't on mac80211 does it anyway */ 4491 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4492 return; 4493 4494 if (!vif->bss_conf.assoc) 4495 return; 4496 4497 mutex_lock(&mvm->mutex); 4498 4499 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4500 goto unlock; 4501 4502 if (iwl_mvm_request_statistics(mvm, false)) 4503 goto unlock; 4504 4505 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4506 mvmvif->beacon_stats.accu_num_beacons; 4507 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4508 if (mvmvif->beacon_stats.avg_signal) { 4509 /* firmware only reports a value after RXing a few beacons */ 4510 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4511 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4512 } 4513 unlock: 4514 mutex_unlock(&mvm->mutex); 4515 } 4516 4517 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4518 struct ieee80211_vif *vif, 4519 const struct ieee80211_event *event) 4520 { 4521 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4522 do { \ 4523 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4524 break; \ 4525 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4526 } while (0) 4527 4528 struct iwl_fw_dbg_trigger_tlv *trig; 4529 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4530 4531 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4532 FW_DBG_TRIGGER_MLME); 4533 if (!trig) 4534 return; 4535 4536 trig_mlme = (void *)trig->data; 4537 4538 if (event->u.mlme.data == ASSOC_EVENT) { 4539 if (event->u.mlme.status == MLME_DENIED) 4540 CHECK_MLME_TRIGGER(stop_assoc_denied, 4541 "DENIED ASSOC: reason %d", 4542 event->u.mlme.reason); 4543 else if (event->u.mlme.status == MLME_TIMEOUT) 4544 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4545 "ASSOC TIMEOUT"); 4546 } else if (event->u.mlme.data == AUTH_EVENT) { 4547 if (event->u.mlme.status == MLME_DENIED) 4548 CHECK_MLME_TRIGGER(stop_auth_denied, 4549 "DENIED AUTH: reason %d", 4550 event->u.mlme.reason); 4551 else if (event->u.mlme.status == MLME_TIMEOUT) 4552 CHECK_MLME_TRIGGER(stop_auth_timeout, 4553 "AUTH TIMEOUT"); 4554 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4555 CHECK_MLME_TRIGGER(stop_rx_deauth, 4556 "DEAUTH RX %d", event->u.mlme.reason); 4557 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4558 CHECK_MLME_TRIGGER(stop_tx_deauth, 4559 "DEAUTH TX %d", event->u.mlme.reason); 4560 } 4561 #undef CHECK_MLME_TRIGGER 4562 } 4563 4564 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4565 struct ieee80211_vif *vif, 4566 const struct ieee80211_event *event) 4567 { 4568 struct iwl_fw_dbg_trigger_tlv *trig; 4569 struct iwl_fw_dbg_trigger_ba *ba_trig; 4570 4571 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4572 FW_DBG_TRIGGER_BA); 4573 if (!trig) 4574 return; 4575 4576 ba_trig = (void *)trig->data; 4577 4578 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4579 return; 4580 4581 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4582 "BAR received from %pM, tid %d, ssn %d", 4583 event->u.ba.sta->addr, event->u.ba.tid, 4584 event->u.ba.ssn); 4585 } 4586 4587 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4588 struct ieee80211_vif *vif, 4589 const struct ieee80211_event *event) 4590 { 4591 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4592 4593 switch (event->type) { 4594 case MLME_EVENT: 4595 iwl_mvm_event_mlme_callback(mvm, vif, event); 4596 break; 4597 case BAR_RX_EVENT: 4598 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4599 break; 4600 case BA_FRAME_TIMEOUT: 4601 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 4602 event->u.ba.tid); 4603 break; 4604 default: 4605 break; 4606 } 4607 } 4608 4609 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4610 struct iwl_mvm_internal_rxq_notif *notif, 4611 u32 size) 4612 { 4613 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4614 int ret; 4615 4616 lockdep_assert_held(&mvm->mutex); 4617 4618 if (!iwl_mvm_has_new_rx_api(mvm)) 4619 return; 4620 4621 notif->cookie = mvm->queue_sync_cookie; 4622 4623 if (notif->sync) 4624 atomic_set(&mvm->queue_sync_counter, 4625 mvm->trans->num_rx_queues); 4626 4627 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4628 if (ret) { 4629 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4630 goto out; 4631 } 4632 4633 if (notif->sync) { 4634 ret = wait_event_timeout(mvm->rx_sync_waitq, 4635 atomic_read(&mvm->queue_sync_counter) == 0 || 4636 iwl_mvm_is_radio_killed(mvm), 4637 HZ); 4638 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 4639 } 4640 4641 out: 4642 atomic_set(&mvm->queue_sync_counter, 0); 4643 mvm->queue_sync_cookie++; 4644 } 4645 4646 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4647 { 4648 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4649 struct iwl_mvm_internal_rxq_notif data = { 4650 .type = IWL_MVM_RXQ_EMPTY, 4651 .sync = 1, 4652 }; 4653 4654 mutex_lock(&mvm->mutex); 4655 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4656 mutex_unlock(&mvm->mutex); 4657 } 4658 4659 const struct ieee80211_ops iwl_mvm_hw_ops = { 4660 .tx = iwl_mvm_mac_tx, 4661 .ampdu_action = iwl_mvm_mac_ampdu_action, 4662 .start = iwl_mvm_mac_start, 4663 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4664 .stop = iwl_mvm_mac_stop, 4665 .add_interface = iwl_mvm_mac_add_interface, 4666 .remove_interface = iwl_mvm_mac_remove_interface, 4667 .config = iwl_mvm_mac_config, 4668 .prepare_multicast = iwl_mvm_prepare_multicast, 4669 .configure_filter = iwl_mvm_configure_filter, 4670 .config_iface_filter = iwl_mvm_config_iface_filter, 4671 .bss_info_changed = iwl_mvm_bss_info_changed, 4672 .hw_scan = iwl_mvm_mac_hw_scan, 4673 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4674 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4675 .sta_state = iwl_mvm_mac_sta_state, 4676 .sta_notify = iwl_mvm_mac_sta_notify, 4677 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4678 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4679 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4680 .sta_rc_update = iwl_mvm_sta_rc_update, 4681 .conf_tx = iwl_mvm_mac_conf_tx, 4682 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4683 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4684 .flush = iwl_mvm_mac_flush, 4685 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4686 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4687 .set_key = iwl_mvm_mac_set_key, 4688 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4689 .remain_on_channel = iwl_mvm_roc, 4690 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4691 .add_chanctx = iwl_mvm_add_chanctx, 4692 .remove_chanctx = iwl_mvm_remove_chanctx, 4693 .change_chanctx = iwl_mvm_change_chanctx, 4694 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4695 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4696 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4697 4698 .start_ap = iwl_mvm_start_ap_ibss, 4699 .stop_ap = iwl_mvm_stop_ap_ibss, 4700 .join_ibss = iwl_mvm_start_ap_ibss, 4701 .leave_ibss = iwl_mvm_stop_ap_ibss, 4702 4703 .tx_last_beacon = iwl_mvm_tx_last_beacon, 4704 4705 .set_tim = iwl_mvm_set_tim, 4706 4707 .channel_switch = iwl_mvm_channel_switch, 4708 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4709 .post_channel_switch = iwl_mvm_post_channel_switch, 4710 4711 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4712 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4713 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4714 4715 .event_callback = iwl_mvm_mac_event_callback, 4716 4717 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4718 4719 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4720 4721 #ifdef CONFIG_PM_SLEEP 4722 /* look at d3.c */ 4723 .suspend = iwl_mvm_suspend, 4724 .resume = iwl_mvm_resume, 4725 .set_wakeup = iwl_mvm_set_wakeup, 4726 .set_rekey_data = iwl_mvm_set_rekey_data, 4727 #if IS_ENABLED(CONFIG_IPV6) 4728 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4729 #endif 4730 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4731 #endif 4732 .get_survey = iwl_mvm_mac_get_survey, 4733 .sta_statistics = iwl_mvm_mac_sta_statistics, 4734 #ifdef CONFIG_IWLWIFI_DEBUGFS 4735 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 4736 #endif 4737 }; 4738