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 - 2019 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 - 2019 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 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = { 188 .max_peers = IWL_MVM_TOF_MAX_APS, 189 .report_ap_tsf = 1, 190 .randomize_mac_addr = 1, 191 192 .ftm = { 193 .supported = 1, 194 .asap = 1, 195 .non_asap = 1, 196 .request_lci = 1, 197 .request_civicloc = 1, 198 .max_bursts_exponent = -1, /* all supported */ 199 .max_ftms_per_burst = 0, /* no limits */ 200 .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 201 BIT(NL80211_CHAN_WIDTH_20) | 202 BIT(NL80211_CHAN_WIDTH_40) | 203 BIT(NL80211_CHAN_WIDTH_80), 204 .preambles = BIT(NL80211_PREAMBLE_LEGACY) | 205 BIT(NL80211_PREAMBLE_HT) | 206 BIT(NL80211_PREAMBLE_VHT), 207 }, 208 }; 209 210 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 211 enum set_key_cmd cmd, 212 struct ieee80211_vif *vif, 213 struct ieee80211_sta *sta, 214 struct ieee80211_key_conf *key); 215 216 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 217 { 218 if (!iwl_mvm_is_d0i3_supported(mvm)) 219 return; 220 221 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); 222 spin_lock_bh(&mvm->refs_lock); 223 mvm->refs[ref_type]++; 224 spin_unlock_bh(&mvm->refs_lock); 225 iwl_trans_ref(mvm->trans); 226 } 227 228 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 229 { 230 if (!iwl_mvm_is_d0i3_supported(mvm)) 231 return; 232 233 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); 234 spin_lock_bh(&mvm->refs_lock); 235 if (WARN_ON(!mvm->refs[ref_type])) { 236 spin_unlock_bh(&mvm->refs_lock); 237 return; 238 } 239 mvm->refs[ref_type]--; 240 spin_unlock_bh(&mvm->refs_lock); 241 iwl_trans_unref(mvm->trans); 242 } 243 244 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, 245 enum iwl_mvm_ref_type except_ref) 246 { 247 int i, j; 248 249 if (!iwl_mvm_is_d0i3_supported(mvm)) 250 return; 251 252 spin_lock_bh(&mvm->refs_lock); 253 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 254 if (except_ref == i || !mvm->refs[i]) 255 continue; 256 257 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", 258 i, mvm->refs[i]); 259 for (j = 0; j < mvm->refs[i]; j++) 260 iwl_trans_unref(mvm->trans); 261 mvm->refs[i] = 0; 262 } 263 spin_unlock_bh(&mvm->refs_lock); 264 } 265 266 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) 267 { 268 int i; 269 bool taken = false; 270 271 if (!iwl_mvm_is_d0i3_supported(mvm)) 272 return true; 273 274 spin_lock_bh(&mvm->refs_lock); 275 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 276 if (mvm->refs[i]) { 277 taken = true; 278 break; 279 } 280 } 281 spin_unlock_bh(&mvm->refs_lock); 282 283 return taken; 284 } 285 286 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 287 { 288 iwl_mvm_ref(mvm, ref_type); 289 290 if (!wait_event_timeout(mvm->d0i3_exit_waitq, 291 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), 292 HZ)) { 293 WARN_ON_ONCE(1); 294 iwl_mvm_unref(mvm, ref_type); 295 return -EIO; 296 } 297 298 return 0; 299 } 300 301 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 302 { 303 int i; 304 305 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 306 for (i = 0; i < NUM_PHY_CTX; i++) { 307 mvm->phy_ctxts[i].id = i; 308 mvm->phy_ctxts[i].ref = 0; 309 } 310 } 311 312 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 313 const char *alpha2, 314 enum iwl_mcc_source src_id, 315 bool *changed) 316 { 317 struct ieee80211_regdomain *regd = NULL; 318 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 319 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 320 struct iwl_mcc_update_resp *resp; 321 322 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 323 324 lockdep_assert_held(&mvm->mutex); 325 326 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 327 if (IS_ERR_OR_NULL(resp)) { 328 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 329 PTR_ERR_OR_ZERO(resp)); 330 goto out; 331 } 332 333 if (changed) { 334 u32 status = le32_to_cpu(resp->status); 335 336 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 337 status == MCC_RESP_ILLEGAL); 338 } 339 340 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 341 __le32_to_cpu(resp->n_channels), 342 resp->channels, 343 __le16_to_cpu(resp->mcc), 344 __le16_to_cpu(resp->geo_info)); 345 /* Store the return source id */ 346 src_id = resp->source_id; 347 kfree(resp); 348 if (IS_ERR_OR_NULL(regd)) { 349 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 350 PTR_ERR_OR_ZERO(regd)); 351 goto out; 352 } 353 354 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 355 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 356 mvm->lar_regdom_set = true; 357 mvm->mcc_src = src_id; 358 359 out: 360 return regd; 361 } 362 363 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 364 { 365 bool changed; 366 struct ieee80211_regdomain *regd; 367 368 if (!iwl_mvm_is_lar_supported(mvm)) 369 return; 370 371 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 372 if (!IS_ERR_OR_NULL(regd)) { 373 /* only update the regulatory core if changed */ 374 if (changed) 375 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 376 377 kfree(regd); 378 } 379 } 380 381 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 382 bool *changed) 383 { 384 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 385 iwl_mvm_is_wifi_mcc_supported(mvm) ? 386 MCC_SOURCE_GET_CURRENT : 387 MCC_SOURCE_OLD_FW, changed); 388 } 389 390 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 391 { 392 enum iwl_mcc_source used_src; 393 struct ieee80211_regdomain *regd; 394 int ret; 395 bool changed; 396 const struct ieee80211_regdomain *r = 397 rtnl_dereference(mvm->hw->wiphy->regd); 398 399 if (!r) 400 return -ENOENT; 401 402 /* save the last source in case we overwrite it below */ 403 used_src = mvm->mcc_src; 404 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 405 /* Notify the firmware we support wifi location updates */ 406 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 407 if (!IS_ERR_OR_NULL(regd)) 408 kfree(regd); 409 } 410 411 /* Now set our last stored MCC and source */ 412 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 413 &changed); 414 if (IS_ERR_OR_NULL(regd)) 415 return -EIO; 416 417 /* update cfg80211 if the regdomain was changed */ 418 if (changed) 419 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 420 else 421 ret = 0; 422 423 kfree(regd); 424 return ret; 425 } 426 427 const static u8 he_if_types_ext_capa_sta[] = { 428 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 429 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 430 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF, 431 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 432 }; 433 434 const static struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = { 435 { 436 .iftype = NL80211_IFTYPE_STATION, 437 .extended_capabilities = he_if_types_ext_capa_sta, 438 .extended_capabilities_mask = he_if_types_ext_capa_sta, 439 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta), 440 }, 441 }; 442 443 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 444 { 445 struct ieee80211_hw *hw = mvm->hw; 446 int num_mac, ret, i; 447 static const u32 mvm_ciphers[] = { 448 WLAN_CIPHER_SUITE_WEP40, 449 WLAN_CIPHER_SUITE_WEP104, 450 WLAN_CIPHER_SUITE_TKIP, 451 WLAN_CIPHER_SUITE_CCMP, 452 }; 453 #ifdef CONFIG_PM_SLEEP 454 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 455 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 456 #endif 457 458 /* Tell mac80211 our characteristics */ 459 ieee80211_hw_set(hw, SIGNAL_DBM); 460 ieee80211_hw_set(hw, SPECTRUM_MGMT); 461 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 462 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 463 ieee80211_hw_set(hw, SUPPORTS_PS); 464 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 465 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 466 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 467 ieee80211_hw_set(hw, CONNECTION_MONITOR); 468 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 469 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 470 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 471 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 472 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 473 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 474 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 475 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 476 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 477 ieee80211_hw_set(hw, TX_AMSDU); 478 ieee80211_hw_set(hw, TX_FRAG_LIST); 479 480 if (iwl_mvm_has_tlc_offload(mvm)) { 481 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 482 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 483 } 484 485 if (iwl_mvm_has_new_rx_api(mvm)) 486 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 487 488 if (fw_has_capa(&mvm->fw->ucode_capa, 489 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 490 ieee80211_hw_set(hw, AP_LINK_PS); 491 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 492 /* 493 * we absolutely need this for the new TX API since that comes 494 * with many more queues than the current code can deal with 495 * for station powersave 496 */ 497 return -EINVAL; 498 } 499 500 if (mvm->trans->num_rx_queues > 1) 501 ieee80211_hw_set(hw, USES_RSS); 502 503 if (mvm->trans->max_skb_frags) 504 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 505 506 hw->queues = IEEE80211_MAX_QUEUES; 507 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 508 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 509 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 510 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 511 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 512 513 hw->radiotap_timestamp.units_pos = 514 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 515 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 516 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 517 hw->radiotap_timestamp.accuracy = 22; 518 519 if (!iwl_mvm_has_tlc_offload(mvm)) 520 hw->rate_control_algorithm = RS_NAME; 521 522 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 523 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 524 hw->max_tx_fragments = mvm->trans->max_skb_frags; 525 526 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 527 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 528 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 529 hw->wiphy->cipher_suites = mvm->ciphers; 530 531 if (iwl_mvm_has_new_rx_api(mvm)) { 532 mvm->ciphers[hw->wiphy->n_cipher_suites] = 533 WLAN_CIPHER_SUITE_GCMP; 534 hw->wiphy->n_cipher_suites++; 535 mvm->ciphers[hw->wiphy->n_cipher_suites] = 536 WLAN_CIPHER_SUITE_GCMP_256; 537 hw->wiphy->n_cipher_suites++; 538 } 539 540 /* Enable 11w if software crypto is not enabled (as the 541 * firmware will interpret some mgmt packets, so enabling it 542 * with software crypto isn't safe). 543 */ 544 if (!iwlwifi_mod_params.swcrypto) { 545 ieee80211_hw_set(hw, MFP_CAPABLE); 546 mvm->ciphers[hw->wiphy->n_cipher_suites] = 547 WLAN_CIPHER_SUITE_AES_CMAC; 548 hw->wiphy->n_cipher_suites++; 549 if (iwl_mvm_has_new_rx_api(mvm)) { 550 mvm->ciphers[hw->wiphy->n_cipher_suites] = 551 WLAN_CIPHER_SUITE_BIP_GMAC_128; 552 hw->wiphy->n_cipher_suites++; 553 mvm->ciphers[hw->wiphy->n_cipher_suites] = 554 WLAN_CIPHER_SUITE_BIP_GMAC_256; 555 hw->wiphy->n_cipher_suites++; 556 } 557 } 558 559 /* currently FW API supports only one optional cipher scheme */ 560 if (mvm->fw->cs[0].cipher) { 561 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 562 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 563 564 mvm->hw->n_cipher_schemes = 1; 565 566 cs->cipher = le32_to_cpu(fwcs->cipher); 567 cs->iftype = BIT(NL80211_IFTYPE_STATION); 568 cs->hdr_len = fwcs->hdr_len; 569 cs->pn_len = fwcs->pn_len; 570 cs->pn_off = fwcs->pn_off; 571 cs->key_idx_off = fwcs->key_idx_off; 572 cs->key_idx_mask = fwcs->key_idx_mask; 573 cs->key_idx_shift = fwcs->key_idx_shift; 574 cs->mic_len = fwcs->mic_len; 575 576 mvm->hw->cipher_schemes = mvm->cs; 577 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 578 hw->wiphy->n_cipher_suites++; 579 } 580 581 if (fw_has_capa(&mvm->fw->ucode_capa, 582 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) { 583 wiphy_ext_feature_set(hw->wiphy, 584 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER); 585 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa; 586 } 587 588 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 589 hw->wiphy->features |= 590 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 591 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 592 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 593 594 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 595 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 596 hw->chanctx_data_size = sizeof(u16); 597 hw->txq_data_size = sizeof(struct iwl_mvm_txq); 598 599 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 600 BIT(NL80211_IFTYPE_P2P_CLIENT) | 601 BIT(NL80211_IFTYPE_AP) | 602 BIT(NL80211_IFTYPE_P2P_GO) | 603 BIT(NL80211_IFTYPE_P2P_DEVICE) | 604 BIT(NL80211_IFTYPE_ADHOC); 605 606 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 607 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 608 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS; 609 610 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 611 if (iwl_mvm_is_lar_supported(mvm)) 612 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 613 else 614 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 615 REGULATORY_DISABLE_BEACON_HINTS; 616 617 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 618 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 619 620 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 621 hw->wiphy->n_iface_combinations = 622 ARRAY_SIZE(iwl_mvm_iface_combinations); 623 624 hw->wiphy->max_remain_on_channel_duration = 10000; 625 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 626 627 /* Extract MAC address */ 628 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 629 hw->wiphy->addresses = mvm->addresses; 630 hw->wiphy->n_addresses = 1; 631 632 /* Extract additional MAC addresses if available */ 633 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 634 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 635 636 for (i = 1; i < num_mac; i++) { 637 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 638 ETH_ALEN); 639 mvm->addresses[i].addr[5]++; 640 hw->wiphy->n_addresses++; 641 } 642 643 iwl_mvm_reset_phy_ctxts(mvm); 644 645 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 646 647 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 648 649 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 650 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 651 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 652 653 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 654 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 655 else 656 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 657 658 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 659 hw->wiphy->bands[NL80211_BAND_2GHZ] = 660 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 661 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 662 hw->wiphy->bands[NL80211_BAND_5GHZ] = 663 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 664 665 if (fw_has_capa(&mvm->fw->ucode_capa, 666 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 667 fw_has_api(&mvm->fw->ucode_capa, 668 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 669 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 670 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 671 } 672 673 hw->wiphy->hw_version = mvm->trans->hw_id; 674 675 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 676 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 677 else 678 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 679 680 hw->wiphy->max_sched_scan_reqs = 1; 681 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 682 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 683 /* we create the 802.11 header and zero length SSID IE. */ 684 hw->wiphy->max_sched_scan_ie_len = 685 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 686 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 687 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 688 689 /* 690 * the firmware uses u8 for num of iterations, but 0xff is saved for 691 * infinite loop, so the maximum number of iterations is actually 254. 692 */ 693 hw->wiphy->max_sched_scan_plan_iterations = 254; 694 695 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 696 NL80211_FEATURE_LOW_PRIORITY_SCAN | 697 NL80211_FEATURE_P2P_GO_OPPPS | 698 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 699 NL80211_FEATURE_DYNAMIC_SMPS | 700 NL80211_FEATURE_STATIC_SMPS | 701 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 702 703 if (fw_has_capa(&mvm->fw->ucode_capa, 704 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 705 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 706 if (fw_has_capa(&mvm->fw->ucode_capa, 707 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 708 hw->wiphy->features |= NL80211_FEATURE_QUIET; 709 710 if (fw_has_capa(&mvm->fw->ucode_capa, 711 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 712 hw->wiphy->features |= 713 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 714 715 if (fw_has_capa(&mvm->fw->ucode_capa, 716 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 717 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 718 719 if (fw_has_api(&mvm->fw->ucode_capa, 720 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 721 wiphy_ext_feature_set(hw->wiphy, 722 NL80211_EXT_FEATURE_SCAN_START_TIME); 723 wiphy_ext_feature_set(hw->wiphy, 724 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 725 wiphy_ext_feature_set(hw->wiphy, 726 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 727 } 728 729 if (iwl_mvm_is_oce_supported(mvm)) { 730 wiphy_ext_feature_set(hw->wiphy, 731 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 732 wiphy_ext_feature_set(hw->wiphy, 733 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 734 wiphy_ext_feature_set(hw->wiphy, 735 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 736 wiphy_ext_feature_set(hw->wiphy, 737 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 738 } 739 740 if (mvm->nvm_data->sku_cap_11ax_enable && 741 !iwlwifi_mod_params.disable_11ax) { 742 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa; 743 hw->wiphy->num_iftype_ext_capab = 744 ARRAY_SIZE(he_iftypes_ext_capa); 745 746 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 747 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 748 } 749 750 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 751 752 #ifdef CONFIG_PM_SLEEP 753 if (iwl_mvm_is_d0i3_supported(mvm) && 754 device_can_wakeup(mvm->trans->dev)) { 755 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 756 hw->wiphy->wowlan = &mvm->wowlan; 757 } 758 759 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) && 760 mvm->trans->ops->d3_suspend && 761 mvm->trans->ops->d3_resume && 762 device_can_wakeup(mvm->trans->dev)) { 763 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 764 WIPHY_WOWLAN_DISCONNECT | 765 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 766 WIPHY_WOWLAN_RFKILL_RELEASE | 767 WIPHY_WOWLAN_NET_DETECT; 768 if (!iwlwifi_mod_params.swcrypto) 769 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 770 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 771 WIPHY_WOWLAN_4WAY_HANDSHAKE; 772 773 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 774 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 775 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 776 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 777 hw->wiphy->wowlan = &mvm->wowlan; 778 } 779 #endif 780 781 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 782 /* assign default bcast filtering configuration */ 783 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 784 #endif 785 786 ret = iwl_mvm_leds_init(mvm); 787 if (ret) 788 return ret; 789 790 if (fw_has_capa(&mvm->fw->ucode_capa, 791 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 792 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 793 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 794 ieee80211_hw_set(hw, TDLS_WIDER_BW); 795 } 796 797 if (fw_has_capa(&mvm->fw->ucode_capa, 798 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 799 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 800 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 801 } 802 803 hw->netdev_features |= mvm->cfg->features; 804 if (!iwl_mvm_is_csum_supported(mvm)) { 805 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 806 NETIF_F_RXCSUM); 807 /* We may support SW TX CSUM */ 808 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 809 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 810 } 811 812 if (mvm->cfg->vht_mu_mimo_supported) 813 wiphy_ext_feature_set(hw->wiphy, 814 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 815 816 ret = ieee80211_register_hw(mvm->hw); 817 if (ret) { 818 iwl_mvm_leds_exit(mvm); 819 } 820 821 return ret; 822 } 823 824 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 825 struct ieee80211_sta *sta, 826 struct sk_buff *skb) 827 { 828 struct iwl_mvm_sta *mvmsta; 829 bool defer = false; 830 831 /* 832 * double check the IN_D0I3 flag both before and after 833 * taking the spinlock, in order to prevent taking 834 * the spinlock when not needed. 835 */ 836 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 837 return false; 838 839 spin_lock(&mvm->d0i3_tx_lock); 840 /* 841 * testing the flag again ensures the skb dequeue 842 * loop (on d0i3 exit) hasn't run yet. 843 */ 844 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 845 goto out; 846 847 mvmsta = iwl_mvm_sta_from_mac80211(sta); 848 if (mvmsta->sta_id == IWL_MVM_INVALID_STA || 849 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 850 goto out; 851 852 __skb_queue_tail(&mvm->d0i3_tx, skb); 853 854 /* trigger wakeup */ 855 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 856 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 857 858 defer = true; 859 out: 860 spin_unlock(&mvm->d0i3_tx_lock); 861 return defer; 862 } 863 864 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 865 struct ieee80211_tx_control *control, 866 struct sk_buff *skb) 867 { 868 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 869 struct ieee80211_sta *sta = control->sta; 870 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 871 struct ieee80211_hdr *hdr = (void *)skb->data; 872 bool offchannel = IEEE80211_SKB_CB(skb)->flags & 873 IEEE80211_TX_CTL_TX_OFFCHAN; 874 875 if (iwl_mvm_is_radio_killed(mvm)) { 876 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 877 goto drop; 878 } 879 880 if (offchannel && 881 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 882 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 883 goto drop; 884 885 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 886 if ((info->control.vif->type == NL80211_IFTYPE_AP || 887 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 888 ieee80211_is_mgmt(hdr->frame_control) && 889 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 890 sta = NULL; 891 892 /* If there is no sta, and it's not offchannel - send through AP */ 893 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION && 894 !offchannel) { 895 struct iwl_mvm_vif *mvmvif = 896 iwl_mvm_vif_from_mac80211(info->control.vif); 897 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 898 899 if (ap_sta_id < IWL_MVM_STATION_COUNT) { 900 /* mac80211 holds rcu read lock */ 901 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 902 if (IS_ERR_OR_NULL(sta)) 903 goto drop; 904 } 905 } 906 907 if (sta) { 908 if (iwl_mvm_defer_tx(mvm, sta, skb)) 909 return; 910 if (iwl_mvm_tx_skb(mvm, skb, sta)) 911 goto drop; 912 return; 913 } 914 915 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 916 goto drop; 917 return; 918 drop: 919 ieee80211_free_txskb(hw, skb); 920 } 921 922 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 923 { 924 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 925 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 926 struct sk_buff *skb = NULL; 927 928 /* 929 * No need for threads to be pending here, they can leave the first 930 * taker all the work. 931 * 932 * mvmtxq->tx_request logic: 933 * 934 * If 0, no one is currently TXing, set to 1 to indicate current thread 935 * will now start TX and other threads should quit. 936 * 937 * If 1, another thread is currently TXing, set to 2 to indicate to 938 * that thread that there was another request. Since that request may 939 * have raced with the check whether the queue is empty, the TXing 940 * thread should check the queue's status one more time before leaving. 941 * This check is done in order to not leave any TX hanging in the queue 942 * until the next TX invocation (which may not even happen). 943 * 944 * If 2, another thread is currently TXing, and it will already double 945 * check the queue, so do nothing. 946 */ 947 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2)) 948 return; 949 950 rcu_read_lock(); 951 do { 952 while (likely(!mvmtxq->stopped && 953 (mvm->trans->system_pm_mode == 954 IWL_PLAT_PM_MODE_DISABLED))) { 955 skb = ieee80211_tx_dequeue(hw, txq); 956 957 if (!skb) { 958 if (txq->sta) 959 IWL_DEBUG_TX(mvm, 960 "TXQ of sta %pM tid %d is now empty\n", 961 txq->sta->addr, 962 txq->tid); 963 break; 964 } 965 966 if (!txq->sta) 967 iwl_mvm_tx_skb_non_sta(mvm, skb); 968 else 969 iwl_mvm_tx_skb(mvm, skb, txq->sta); 970 } 971 } while (atomic_dec_return(&mvmtxq->tx_request)); 972 rcu_read_unlock(); 973 } 974 975 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw, 976 struct ieee80211_txq *txq) 977 { 978 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 979 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 980 981 /* 982 * Please note that racing is handled very carefully here: 983 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is 984 * deleted afterwards. 985 * This means that if: 986 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list): 987 * queue is allocated and we can TX. 988 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list): 989 * a race, should defer the frame. 990 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list): 991 * need to allocate the queue and defer the frame. 992 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list): 993 * queue is already scheduled for allocation, no need to allocate, 994 * should defer the frame. 995 */ 996 997 /* If the queue is allocated TX and return. */ 998 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) { 999 /* 1000 * Check that list is empty to avoid a race where txq_id is 1001 * already updated, but the queue allocation work wasn't 1002 * finished 1003 */ 1004 if (unlikely(txq->sta && !list_empty(&mvmtxq->list))) 1005 return; 1006 1007 iwl_mvm_mac_itxq_xmit(hw, txq); 1008 return; 1009 } 1010 1011 /* The list is being deleted only after the queue is fully allocated. */ 1012 if (!list_empty(&mvmtxq->list)) 1013 return; 1014 1015 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs); 1016 schedule_work(&mvm->add_stream_wk); 1017 } 1018 1019 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 1020 do { \ 1021 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 1022 break; \ 1023 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 1024 } while (0) 1025 1026 static void 1027 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1028 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 1029 enum ieee80211_ampdu_mlme_action action) 1030 { 1031 struct iwl_fw_dbg_trigger_tlv *trig; 1032 struct iwl_fw_dbg_trigger_ba *ba_trig; 1033 1034 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1035 FW_DBG_TRIGGER_BA); 1036 if (!trig) 1037 return; 1038 1039 ba_trig = (void *)trig->data; 1040 1041 switch (action) { 1042 case IEEE80211_AMPDU_TX_OPERATIONAL: { 1043 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1044 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1045 1046 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 1047 "TX AGG START: MAC %pM tid %d ssn %d\n", 1048 sta->addr, tid, tid_data->ssn); 1049 break; 1050 } 1051 case IEEE80211_AMPDU_TX_STOP_CONT: 1052 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 1053 "TX AGG STOP: MAC %pM tid %d\n", 1054 sta->addr, tid); 1055 break; 1056 case IEEE80211_AMPDU_RX_START: 1057 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 1058 "RX AGG START: MAC %pM tid %d ssn %d\n", 1059 sta->addr, tid, rx_ba_ssn); 1060 break; 1061 case IEEE80211_AMPDU_RX_STOP: 1062 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 1063 "RX AGG STOP: MAC %pM tid %d\n", 1064 sta->addr, tid); 1065 break; 1066 default: 1067 break; 1068 } 1069 } 1070 1071 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 1072 struct ieee80211_vif *vif, 1073 struct ieee80211_ampdu_params *params) 1074 { 1075 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1076 int ret; 1077 bool tx_agg_ref = false; 1078 struct ieee80211_sta *sta = params->sta; 1079 enum ieee80211_ampdu_mlme_action action = params->action; 1080 u16 tid = params->tid; 1081 u16 *ssn = ¶ms->ssn; 1082 u16 buf_size = params->buf_size; 1083 bool amsdu = params->amsdu; 1084 u16 timeout = params->timeout; 1085 1086 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 1087 sta->addr, tid, action); 1088 1089 if (!(mvm->nvm_data->sku_cap_11n_enable)) 1090 return -EACCES; 1091 1092 /* return from D0i3 before starting a new Tx aggregation */ 1093 switch (action) { 1094 case IEEE80211_AMPDU_TX_START: 1095 case IEEE80211_AMPDU_TX_STOP_CONT: 1096 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1097 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1098 case IEEE80211_AMPDU_TX_OPERATIONAL: 1099 /* 1100 * for tx start, wait synchronously until D0i3 exit to 1101 * get the correct sequence number for the tid. 1102 * additionally, some other ampdu actions use direct 1103 * target access, which is not handled automatically 1104 * by the trans layer (unlike commands), so wait for 1105 * d0i3 exit in these cases as well. 1106 */ 1107 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 1108 if (ret) 1109 return ret; 1110 1111 tx_agg_ref = true; 1112 break; 1113 default: 1114 break; 1115 } 1116 1117 mutex_lock(&mvm->mutex); 1118 1119 switch (action) { 1120 case IEEE80211_AMPDU_RX_START: 1121 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 1122 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 1123 struct iwl_mvm_vif *mvmvif; 1124 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 1125 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 1126 1127 mdata->opened_rx_ba_sessions = true; 1128 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1129 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 1130 } 1131 if (!iwl_enable_rx_ampdu()) { 1132 ret = -EINVAL; 1133 break; 1134 } 1135 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 1136 timeout); 1137 break; 1138 case IEEE80211_AMPDU_RX_STOP: 1139 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 1140 timeout); 1141 break; 1142 case IEEE80211_AMPDU_TX_START: 1143 if (!iwl_enable_tx_ampdu()) { 1144 ret = -EINVAL; 1145 break; 1146 } 1147 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 1148 break; 1149 case IEEE80211_AMPDU_TX_STOP_CONT: 1150 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 1151 break; 1152 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1153 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1154 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 1155 break; 1156 case IEEE80211_AMPDU_TX_OPERATIONAL: 1157 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 1158 buf_size, amsdu); 1159 break; 1160 default: 1161 WARN_ON_ONCE(1); 1162 ret = -EINVAL; 1163 break; 1164 } 1165 1166 if (!ret) { 1167 u16 rx_ba_ssn = 0; 1168 1169 if (action == IEEE80211_AMPDU_RX_START) 1170 rx_ba_ssn = *ssn; 1171 1172 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1173 rx_ba_ssn, action); 1174 } 1175 mutex_unlock(&mvm->mutex); 1176 1177 /* 1178 * If the tid is marked as started, we won't use it for offloaded 1179 * traffic on the next D0i3 entry. It's safe to unref. 1180 */ 1181 if (tx_agg_ref) 1182 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 1183 1184 return ret; 1185 } 1186 1187 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1188 struct ieee80211_vif *vif) 1189 { 1190 struct iwl_mvm *mvm = data; 1191 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1192 1193 mvmvif->uploaded = false; 1194 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1195 1196 spin_lock_bh(&mvm->time_event_lock); 1197 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1198 spin_unlock_bh(&mvm->time_event_lock); 1199 1200 mvmvif->phy_ctxt = NULL; 1201 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1202 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1203 } 1204 1205 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1206 { 1207 /* cleanup all stale references (scan, roc), but keep the 1208 * ucode_down ref until reconfig is complete 1209 */ 1210 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 1211 1212 iwl_mvm_stop_device(mvm); 1213 1214 mvm->cur_aid = 0; 1215 1216 mvm->scan_status = 0; 1217 mvm->ps_disabled = false; 1218 mvm->rfkill_safe_init_done = false; 1219 1220 /* just in case one was running */ 1221 iwl_mvm_cleanup_roc_te(mvm); 1222 ieee80211_remain_on_channel_expired(mvm->hw); 1223 1224 iwl_mvm_ftm_restart(mvm); 1225 1226 /* 1227 * cleanup all interfaces, even inactive ones, as some might have 1228 * gone down during the HW restart 1229 */ 1230 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1231 1232 mvm->p2p_device_vif = NULL; 1233 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1234 1235 iwl_mvm_reset_phy_ctxts(mvm); 1236 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1237 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1238 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1239 1240 ieee80211_wake_queues(mvm->hw); 1241 1242 /* clear any stale d0i3 state */ 1243 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1244 1245 mvm->vif_count = 0; 1246 mvm->rx_ba_sessions = 0; 1247 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1248 mvm->monitor_on = false; 1249 1250 /* keep statistics ticking */ 1251 iwl_mvm_accu_radio_stats(mvm); 1252 } 1253 1254 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1255 { 1256 int ret; 1257 1258 lockdep_assert_held(&mvm->mutex); 1259 1260 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1261 /* 1262 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1263 * so later code will - from now on - see that we're doing it. 1264 */ 1265 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1266 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1267 /* Clean up some internal and mac80211 state on restart */ 1268 iwl_mvm_restart_cleanup(mvm); 1269 } else { 1270 /* Hold the reference to prevent runtime suspend while 1271 * the start procedure runs. It's a bit confusing 1272 * that the UCODE_DOWN reference is taken, but it just 1273 * means "UCODE is not UP yet". ( TODO: rename this 1274 * reference). 1275 */ 1276 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1277 } 1278 ret = iwl_mvm_up(mvm); 1279 1280 iwl_fw_dbg_apply_point(&mvm->fwrt, IWL_FW_INI_APPLY_POST_INIT); 1281 1282 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1283 /* Something went wrong - we need to finish some cleanup 1284 * that normally iwl_mvm_mac_restart_complete() below 1285 * would do. 1286 */ 1287 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1288 #ifdef CONFIG_PM 1289 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1290 #endif 1291 } 1292 1293 return ret; 1294 } 1295 1296 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1297 { 1298 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1299 int ret; 1300 1301 /* Some hw restart cleanups must not hold the mutex */ 1302 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1303 /* 1304 * Make sure we are out of d0i3. This is needed 1305 * to make sure the reference accounting is correct 1306 * (and there is no stale d0i3_exit_work). 1307 */ 1308 wait_event_timeout(mvm->d0i3_exit_waitq, 1309 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1310 &mvm->status), 1311 HZ); 1312 } 1313 1314 mutex_lock(&mvm->mutex); 1315 ret = __iwl_mvm_mac_start(mvm); 1316 mutex_unlock(&mvm->mutex); 1317 1318 return ret; 1319 } 1320 1321 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1322 { 1323 int ret; 1324 1325 mutex_lock(&mvm->mutex); 1326 1327 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1328 #ifdef CONFIG_PM 1329 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1330 #endif 1331 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1332 if (ret) 1333 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1334 ret); 1335 1336 /* allow transport/FW low power modes */ 1337 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1338 1339 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); 1340 1341 /* 1342 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1343 * of packets the FW sent out, so we must reconnect. 1344 */ 1345 iwl_mvm_teardown_tdls_peers(mvm); 1346 1347 mutex_unlock(&mvm->mutex); 1348 } 1349 1350 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1351 { 1352 if (iwl_mvm_is_d0i3_supported(mvm) && 1353 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1354 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1355 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1356 &mvm->status), 1357 HZ), 1358 "D0i3 exit on resume timed out\n"); 1359 } 1360 1361 static void 1362 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1363 enum ieee80211_reconfig_type reconfig_type) 1364 { 1365 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1366 1367 switch (reconfig_type) { 1368 case IEEE80211_RECONFIG_TYPE_RESTART: 1369 iwl_mvm_restart_complete(mvm); 1370 break; 1371 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1372 iwl_mvm_resume_complete(mvm); 1373 break; 1374 } 1375 } 1376 1377 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1378 { 1379 lockdep_assert_held(&mvm->mutex); 1380 1381 /* firmware counters are obviously reset now, but we shouldn't 1382 * partially track so also clear the fw_reset_accu counters. 1383 */ 1384 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1385 1386 /* async_handlers_wk is now blocked */ 1387 1388 /* 1389 * The work item could be running or queued if the 1390 * ROC time event stops just as we get here. 1391 */ 1392 flush_work(&mvm->roc_done_wk); 1393 1394 iwl_mvm_stop_device(mvm); 1395 1396 iwl_mvm_async_handlers_purge(mvm); 1397 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1398 1399 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1400 iwl_mvm_del_aux_sta(mvm); 1401 1402 /* 1403 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1404 * hw (as restart_complete() won't be called in this case) and mac80211 1405 * won't execute the restart. 1406 * But make sure to cleanup interfaces that have gone down before/during 1407 * HW restart was requested. 1408 */ 1409 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1410 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1411 &mvm->status)) 1412 ieee80211_iterate_interfaces(mvm->hw, 0, 1413 iwl_mvm_cleanup_iterator, mvm); 1414 1415 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1416 * make sure there's nothing left there and warn if any is found. 1417 */ 1418 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1419 int i; 1420 1421 for (i = 0; i < mvm->max_scans; i++) { 1422 if (WARN_ONCE(mvm->scan_uid_status[i], 1423 "UMAC scan UID %d status was not cleaned\n", 1424 i)) 1425 mvm->scan_uid_status[i] = 0; 1426 } 1427 } 1428 } 1429 1430 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1431 { 1432 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1433 1434 flush_work(&mvm->d0i3_exit_work); 1435 flush_work(&mvm->async_handlers_wk); 1436 flush_work(&mvm->add_stream_wk); 1437 1438 /* 1439 * Lock and clear the firmware running bit here already, so that 1440 * new commands coming in elsewhere, e.g. from debugfs, will not 1441 * be able to proceed. This is important here because one of those 1442 * debugfs files causes the firmware dump to be triggered, and if we 1443 * don't stop debugfs accesses before canceling that it could be 1444 * retriggered after we flush it but before we've cleared the bit. 1445 */ 1446 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1447 1448 iwl_fw_cancel_dumps(&mvm->fwrt); 1449 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1450 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1451 iwl_fw_free_dump_desc(&mvm->fwrt); 1452 1453 mutex_lock(&mvm->mutex); 1454 __iwl_mvm_mac_stop(mvm); 1455 mutex_unlock(&mvm->mutex); 1456 1457 /* 1458 * The worker might have been waiting for the mutex, let it run and 1459 * discover that its list is now empty. 1460 */ 1461 cancel_work_sync(&mvm->async_handlers_wk); 1462 } 1463 1464 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1465 { 1466 u16 i; 1467 1468 lockdep_assert_held(&mvm->mutex); 1469 1470 for (i = 0; i < NUM_PHY_CTX; i++) 1471 if (!mvm->phy_ctxts[i].ref) 1472 return &mvm->phy_ctxts[i]; 1473 1474 IWL_ERR(mvm, "No available PHY context\n"); 1475 return NULL; 1476 } 1477 1478 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1479 s16 tx_power) 1480 { 1481 int len; 1482 union { 1483 struct iwl_dev_tx_power_cmd v5; 1484 struct iwl_dev_tx_power_cmd_v4 v4; 1485 } cmd = { 1486 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1487 .v5.v3.mac_context_id = 1488 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1489 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1490 }; 1491 1492 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1493 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1494 1495 if (fw_has_api(&mvm->fw->ucode_capa, 1496 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1497 len = sizeof(cmd.v5); 1498 else if (fw_has_capa(&mvm->fw->ucode_capa, 1499 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1500 len = sizeof(cmd.v4); 1501 else 1502 len = sizeof(cmd.v4.v3); 1503 1504 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1505 } 1506 1507 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 1508 struct ieee80211_vif *vif) 1509 { 1510 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1511 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1512 int ret; 1513 1514 mutex_lock(&mvm->mutex); 1515 1516 if (mvmvif->csa_failed) { 1517 mvmvif->csa_failed = false; 1518 ret = -EIO; 1519 goto out_unlock; 1520 } 1521 1522 if (vif->type == NL80211_IFTYPE_STATION) { 1523 struct iwl_mvm_sta *mvmsta; 1524 1525 mvmvif->csa_bcn_pending = false; 1526 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 1527 mvmvif->ap_sta_id); 1528 1529 if (WARN_ON(!mvmsta)) { 1530 ret = -EIO; 1531 goto out_unlock; 1532 } 1533 1534 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 1535 1536 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1537 1538 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1539 if (ret) 1540 goto out_unlock; 1541 1542 iwl_mvm_stop_session_protection(mvm, vif); 1543 } 1544 1545 mvmvif->ps_disabled = false; 1546 1547 ret = iwl_mvm_power_update_ps(mvm); 1548 1549 out_unlock: 1550 mutex_unlock(&mvm->mutex); 1551 1552 return ret; 1553 } 1554 1555 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw, 1556 struct ieee80211_vif *vif) 1557 { 1558 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1559 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1560 struct iwl_chan_switch_te_cmd cmd = { 1561 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1562 mvmvif->color)), 1563 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE), 1564 }; 1565 1566 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id); 1567 1568 mutex_lock(&mvm->mutex); 1569 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 1570 WIDE_ID(MAC_CONF_GROUP, 1571 CHANNEL_SWITCH_TIME_EVENT_CMD), 1572 0, sizeof(cmd), &cmd)); 1573 mutex_unlock(&mvm->mutex); 1574 1575 WARN_ON(iwl_mvm_post_channel_switch(hw, vif)); 1576 } 1577 1578 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk) 1579 { 1580 struct iwl_mvm *mvm; 1581 struct iwl_mvm_vif *mvmvif; 1582 struct ieee80211_vif *vif; 1583 1584 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work); 1585 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1586 mvm = mvmvif->mvm; 1587 1588 iwl_mvm_abort_channel_switch(mvm->hw, vif); 1589 ieee80211_chswitch_done(vif, false); 1590 } 1591 1592 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1593 struct ieee80211_vif *vif) 1594 { 1595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1596 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1597 int ret; 1598 1599 mvmvif->mvm = mvm; 1600 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1601 1602 /* 1603 * make sure D0i3 exit is completed, otherwise a target access 1604 * during tx queue configuration could be done when still in 1605 * D0i3 state. 1606 */ 1607 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1608 if (ret) 1609 return ret; 1610 1611 /* 1612 * Not much to do here. The stack will not allow interface 1613 * types or combinations that we didn't advertise, so we 1614 * don't really have to check the types. 1615 */ 1616 1617 mutex_lock(&mvm->mutex); 1618 1619 /* make sure that beacon statistics don't go backwards with FW reset */ 1620 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1621 mvmvif->beacon_stats.accu_num_beacons += 1622 mvmvif->beacon_stats.num_beacons; 1623 1624 /* Allocate resources for the MAC context, and add it to the fw */ 1625 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1626 if (ret) 1627 goto out_unlock; 1628 1629 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif); 1630 1631 /* Counting number of interfaces is needed for legacy PM */ 1632 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1633 mvm->vif_count++; 1634 1635 /* 1636 * The AP binding flow can be done only after the beacon 1637 * template is configured (which happens only in the mac80211 1638 * start_ap() flow), and adding the broadcast station can happen 1639 * only after the binding. 1640 * In addition, since modifying the MAC before adding a bcast 1641 * station is not allowed by the FW, delay the adding of MAC context to 1642 * the point where we can also add the bcast station. 1643 * In short: there's not much we can do at this point, other than 1644 * allocating resources :) 1645 */ 1646 if (vif->type == NL80211_IFTYPE_AP || 1647 vif->type == NL80211_IFTYPE_ADHOC) { 1648 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1649 if (ret) { 1650 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1651 goto out_release; 1652 } 1653 1654 /* 1655 * Only queue for this station is the mcast queue, 1656 * which shouldn't be in TFD mask anyway 1657 */ 1658 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1659 0, vif->type, 1660 IWL_STA_MULTICAST); 1661 if (ret) 1662 goto out_release; 1663 1664 iwl_mvm_vif_dbgfs_register(mvm, vif); 1665 goto out_unlock; 1666 } 1667 1668 mvmvif->features |= hw->netdev_features; 1669 1670 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1671 if (ret) 1672 goto out_release; 1673 1674 ret = iwl_mvm_power_update_mac(mvm); 1675 if (ret) 1676 goto out_remove_mac; 1677 1678 /* beacon filtering */ 1679 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1680 if (ret) 1681 goto out_remove_mac; 1682 1683 if (!mvm->bf_allowed_vif && 1684 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1685 mvm->bf_allowed_vif = mvmvif; 1686 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1687 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1688 } 1689 1690 /* 1691 * P2P_DEVICE interface does not have a channel context assigned to it, 1692 * so a dedicated PHY context is allocated to it and the corresponding 1693 * MAC context is bound to it at this stage. 1694 */ 1695 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1696 1697 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1698 if (!mvmvif->phy_ctxt) { 1699 ret = -ENOSPC; 1700 goto out_free_bf; 1701 } 1702 1703 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1704 ret = iwl_mvm_binding_add_vif(mvm, vif); 1705 if (ret) 1706 goto out_unref_phy; 1707 1708 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1709 if (ret) 1710 goto out_unbind; 1711 1712 /* Save a pointer to p2p device vif, so it can later be used to 1713 * update the p2p device MAC when a GO is started/stopped */ 1714 mvm->p2p_device_vif = vif; 1715 } 1716 1717 iwl_mvm_tcm_add_vif(mvm, vif); 1718 INIT_DELAYED_WORK(&mvmvif->csa_work, 1719 iwl_mvm_channel_switch_disconnect_wk); 1720 1721 if (vif->type == NL80211_IFTYPE_MONITOR) 1722 mvm->monitor_on = true; 1723 1724 iwl_mvm_vif_dbgfs_register(mvm, vif); 1725 goto out_unlock; 1726 1727 out_unbind: 1728 iwl_mvm_binding_remove_vif(mvm, vif); 1729 out_unref_phy: 1730 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1731 out_free_bf: 1732 if (mvm->bf_allowed_vif == mvmvif) { 1733 mvm->bf_allowed_vif = NULL; 1734 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1735 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1736 } 1737 out_remove_mac: 1738 mvmvif->phy_ctxt = NULL; 1739 iwl_mvm_mac_ctxt_remove(mvm, vif); 1740 out_release: 1741 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1742 mvm->vif_count--; 1743 out_unlock: 1744 mutex_unlock(&mvm->mutex); 1745 1746 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1747 1748 return ret; 1749 } 1750 1751 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1752 struct ieee80211_vif *vif) 1753 { 1754 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1755 /* 1756 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1757 * We assume here that all the packets sent to the OFFCHANNEL 1758 * queue are sent in ROC session. 1759 */ 1760 flush_work(&mvm->roc_done_wk); 1761 } 1762 } 1763 1764 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1765 struct ieee80211_vif *vif) 1766 { 1767 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1769 struct iwl_probe_resp_data *probe_data; 1770 1771 iwl_mvm_prepare_mac_removal(mvm, vif); 1772 1773 if (!(vif->type == NL80211_IFTYPE_AP || 1774 vif->type == NL80211_IFTYPE_ADHOC)) 1775 iwl_mvm_tcm_rm_vif(mvm, vif); 1776 1777 mutex_lock(&mvm->mutex); 1778 1779 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1780 lockdep_is_held(&mvm->mutex)); 1781 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1782 if (probe_data) 1783 kfree_rcu(probe_data, rcu_head); 1784 1785 if (mvm->bf_allowed_vif == mvmvif) { 1786 mvm->bf_allowed_vif = NULL; 1787 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1788 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1789 } 1790 1791 if (vif->bss_conf.ftm_responder) 1792 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats)); 1793 1794 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1795 1796 /* 1797 * For AP/GO interface, the tear down of the resources allocated to the 1798 * interface is be handled as part of the stop_ap flow. 1799 */ 1800 if (vif->type == NL80211_IFTYPE_AP || 1801 vif->type == NL80211_IFTYPE_ADHOC) { 1802 #ifdef CONFIG_NL80211_TESTMODE 1803 if (vif == mvm->noa_vif) { 1804 mvm->noa_vif = NULL; 1805 mvm->noa_duration = 0; 1806 } 1807 #endif 1808 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1809 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1810 goto out_release; 1811 } 1812 1813 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1814 mvm->p2p_device_vif = NULL; 1815 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1816 iwl_mvm_binding_remove_vif(mvm, vif); 1817 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1818 mvmvif->phy_ctxt = NULL; 1819 } 1820 1821 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1822 mvm->vif_count--; 1823 1824 iwl_mvm_power_update_mac(mvm); 1825 iwl_mvm_mac_ctxt_remove(mvm, vif); 1826 1827 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL); 1828 1829 if (vif->type == NL80211_IFTYPE_MONITOR) 1830 mvm->monitor_on = false; 1831 1832 out_release: 1833 mutex_unlock(&mvm->mutex); 1834 } 1835 1836 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1837 { 1838 return 0; 1839 } 1840 1841 struct iwl_mvm_mc_iter_data { 1842 struct iwl_mvm *mvm; 1843 int port_id; 1844 }; 1845 1846 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1847 struct ieee80211_vif *vif) 1848 { 1849 struct iwl_mvm_mc_iter_data *data = _data; 1850 struct iwl_mvm *mvm = data->mvm; 1851 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1852 struct iwl_host_cmd hcmd = { 1853 .id = MCAST_FILTER_CMD, 1854 .flags = CMD_ASYNC, 1855 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1856 }; 1857 int ret, len; 1858 1859 /* if we don't have free ports, mcast frames will be dropped */ 1860 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1861 return; 1862 1863 if (vif->type != NL80211_IFTYPE_STATION || 1864 !vif->bss_conf.assoc) 1865 return; 1866 1867 cmd->port_id = data->port_id++; 1868 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1869 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1870 1871 hcmd.len[0] = len; 1872 hcmd.data[0] = cmd; 1873 1874 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1875 if (ret) 1876 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1877 } 1878 1879 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1880 { 1881 struct iwl_mvm_mc_iter_data iter_data = { 1882 .mvm = mvm, 1883 }; 1884 1885 lockdep_assert_held(&mvm->mutex); 1886 1887 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1888 return; 1889 1890 ieee80211_iterate_active_interfaces_atomic( 1891 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1892 iwl_mvm_mc_iface_iterator, &iter_data); 1893 } 1894 1895 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1896 struct netdev_hw_addr_list *mc_list) 1897 { 1898 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1899 struct iwl_mcast_filter_cmd *cmd; 1900 struct netdev_hw_addr *addr; 1901 int addr_count; 1902 bool pass_all; 1903 int len; 1904 1905 addr_count = netdev_hw_addr_list_count(mc_list); 1906 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1907 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1908 if (pass_all) 1909 addr_count = 0; 1910 1911 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1912 cmd = kzalloc(len, GFP_ATOMIC); 1913 if (!cmd) 1914 return 0; 1915 1916 if (pass_all) { 1917 cmd->pass_all = 1; 1918 return (u64)(unsigned long)cmd; 1919 } 1920 1921 netdev_hw_addr_list_for_each(addr, mc_list) { 1922 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1923 cmd->count, addr->addr); 1924 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1925 addr->addr, ETH_ALEN); 1926 cmd->count++; 1927 } 1928 1929 return (u64)(unsigned long)cmd; 1930 } 1931 1932 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1933 unsigned int changed_flags, 1934 unsigned int *total_flags, 1935 u64 multicast) 1936 { 1937 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1938 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1939 1940 mutex_lock(&mvm->mutex); 1941 1942 /* replace previous configuration */ 1943 kfree(mvm->mcast_filter_cmd); 1944 mvm->mcast_filter_cmd = cmd; 1945 1946 if (!cmd) 1947 goto out; 1948 1949 if (changed_flags & FIF_ALLMULTI) 1950 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1951 1952 if (cmd->pass_all) 1953 cmd->count = 0; 1954 1955 iwl_mvm_recalc_multicast(mvm); 1956 out: 1957 mutex_unlock(&mvm->mutex); 1958 *total_flags = 0; 1959 } 1960 1961 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1962 struct ieee80211_vif *vif, 1963 unsigned int filter_flags, 1964 unsigned int changed_flags) 1965 { 1966 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1967 1968 /* We support only filter for probe requests */ 1969 if (!(changed_flags & FIF_PROBE_REQ)) 1970 return; 1971 1972 /* Supported only for p2p client interfaces */ 1973 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1974 !vif->p2p) 1975 return; 1976 1977 mutex_lock(&mvm->mutex); 1978 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1979 mutex_unlock(&mvm->mutex); 1980 } 1981 1982 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1983 struct iwl_bcast_iter_data { 1984 struct iwl_mvm *mvm; 1985 struct iwl_bcast_filter_cmd *cmd; 1986 u8 current_filter; 1987 }; 1988 1989 static void 1990 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1991 const struct iwl_fw_bcast_filter *in_filter, 1992 struct iwl_fw_bcast_filter *out_filter) 1993 { 1994 struct iwl_fw_bcast_filter_attr *attr; 1995 int i; 1996 1997 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1998 1999 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 2000 attr = &out_filter->attrs[i]; 2001 2002 if (!attr->mask) 2003 break; 2004 2005 switch (attr->reserved1) { 2006 case cpu_to_le16(BC_FILTER_MAGIC_IP): 2007 if (vif->bss_conf.arp_addr_cnt != 1) { 2008 attr->mask = 0; 2009 continue; 2010 } 2011 2012 attr->val = vif->bss_conf.arp_addr_list[0]; 2013 break; 2014 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 2015 attr->val = *(__be32 *)&vif->addr[2]; 2016 break; 2017 default: 2018 break; 2019 } 2020 attr->reserved1 = 0; 2021 out_filter->num_attrs++; 2022 } 2023 } 2024 2025 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 2026 struct ieee80211_vif *vif) 2027 { 2028 struct iwl_bcast_iter_data *data = _data; 2029 struct iwl_mvm *mvm = data->mvm; 2030 struct iwl_bcast_filter_cmd *cmd = data->cmd; 2031 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2032 struct iwl_fw_bcast_mac *bcast_mac; 2033 int i; 2034 2035 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 2036 return; 2037 2038 bcast_mac = &cmd->macs[mvmvif->id]; 2039 2040 /* 2041 * enable filtering only for associated stations, but not for P2P 2042 * Clients 2043 */ 2044 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 2045 !vif->bss_conf.assoc) 2046 return; 2047 2048 bcast_mac->default_discard = 1; 2049 2050 /* copy all configured filters */ 2051 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 2052 /* 2053 * Make sure we don't exceed our filters limit. 2054 * if there is still a valid filter to be configured, 2055 * be on the safe side and just allow bcast for this mac. 2056 */ 2057 if (WARN_ON_ONCE(data->current_filter >= 2058 ARRAY_SIZE(cmd->filters))) { 2059 bcast_mac->default_discard = 0; 2060 bcast_mac->attached_filters = 0; 2061 break; 2062 } 2063 2064 iwl_mvm_set_bcast_filter(vif, 2065 &mvm->bcast_filters[i], 2066 &cmd->filters[data->current_filter]); 2067 2068 /* skip current filter if it contains no attributes */ 2069 if (!cmd->filters[data->current_filter].num_attrs) 2070 continue; 2071 2072 /* attach the filter to current mac */ 2073 bcast_mac->attached_filters |= 2074 cpu_to_le16(BIT(data->current_filter)); 2075 2076 data->current_filter++; 2077 } 2078 } 2079 2080 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 2081 struct iwl_bcast_filter_cmd *cmd) 2082 { 2083 struct iwl_bcast_iter_data iter_data = { 2084 .mvm = mvm, 2085 .cmd = cmd, 2086 }; 2087 2088 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 2089 return false; 2090 2091 memset(cmd, 0, sizeof(*cmd)); 2092 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 2093 cmd->max_macs = ARRAY_SIZE(cmd->macs); 2094 2095 #ifdef CONFIG_IWLWIFI_DEBUGFS 2096 /* use debugfs filters/macs if override is configured */ 2097 if (mvm->dbgfs_bcast_filtering.override) { 2098 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 2099 sizeof(cmd->filters)); 2100 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 2101 sizeof(cmd->macs)); 2102 return true; 2103 } 2104 #endif 2105 2106 /* if no filters are configured, do nothing */ 2107 if (!mvm->bcast_filters) 2108 return false; 2109 2110 /* configure and attach these filters for each associated sta vif */ 2111 ieee80211_iterate_active_interfaces( 2112 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 2113 iwl_mvm_bcast_filter_iterator, &iter_data); 2114 2115 return true; 2116 } 2117 2118 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 2119 { 2120 struct iwl_bcast_filter_cmd cmd; 2121 2122 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 2123 return 0; 2124 2125 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 2126 return 0; 2127 2128 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 2129 sizeof(cmd), &cmd); 2130 } 2131 #else 2132 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 2133 { 2134 return 0; 2135 } 2136 #endif 2137 2138 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 2139 struct ieee80211_vif *vif) 2140 { 2141 struct iwl_mu_group_mgmt_cmd cmd = {}; 2142 2143 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 2144 WLAN_MEMBERSHIP_LEN); 2145 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 2146 WLAN_USER_POSITION_LEN); 2147 2148 return iwl_mvm_send_cmd_pdu(mvm, 2149 WIDE_ID(DATA_PATH_GROUP, 2150 UPDATE_MU_GROUPS_CMD), 2151 0, sizeof(cmd), &cmd); 2152 } 2153 2154 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 2155 struct ieee80211_vif *vif) 2156 { 2157 if (vif->mu_mimo_owner) { 2158 struct iwl_mu_group_mgmt_notif *notif = _data; 2159 2160 /* 2161 * MU-MIMO Group Id action frame is little endian. We treat 2162 * the data received from firmware as if it came from the 2163 * action frame, so no conversion is needed. 2164 */ 2165 ieee80211_update_mu_groups(vif, 2166 (u8 *)¬if->membership_status, 2167 (u8 *)¬if->user_position); 2168 } 2169 } 2170 2171 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 2172 struct iwl_rx_cmd_buffer *rxb) 2173 { 2174 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2175 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 2176 2177 ieee80211_iterate_active_interfaces_atomic( 2178 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 2179 iwl_mvm_mu_mimo_iface_iterator, notif); 2180 } 2181 2182 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 2183 { 2184 u8 byte_num = ppe_pos_bit / 8; 2185 u8 bit_num = ppe_pos_bit % 8; 2186 u8 residue_bits; 2187 u8 res; 2188 2189 if (bit_num <= 5) 2190 return (ppe[byte_num] >> bit_num) & 2191 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 2192 2193 /* 2194 * If bit_num > 5, we have to combine bits with next byte. 2195 * Calculate how many bits we need to take from current byte (called 2196 * here "residue_bits"), and add them to bits from next byte. 2197 */ 2198 2199 residue_bits = 8 - bit_num; 2200 2201 res = (ppe[byte_num + 1] & 2202 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 2203 residue_bits; 2204 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 2205 2206 return res; 2207 } 2208 2209 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 2210 struct ieee80211_vif *vif, u8 sta_id) 2211 { 2212 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2213 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 2214 .sta_id = sta_id, 2215 .tid_limit = IWL_MAX_TID_COUNT, 2216 .bss_color = vif->bss_conf.bss_color, 2217 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 2218 .frame_time_rts_th = 2219 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 2220 }; 2221 int size = fw_has_api(&mvm->fw->ucode_capa, 2222 IWL_UCODE_TLV_API_MBSSID_HE) ? 2223 sizeof(sta_ctxt_cmd) : 2224 sizeof(struct iwl_he_sta_context_cmd_v1); 2225 struct ieee80211_sta *sta; 2226 u32 flags; 2227 int i; 2228 2229 rcu_read_lock(); 2230 2231 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 2232 if (IS_ERR(sta)) { 2233 rcu_read_unlock(); 2234 WARN(1, "Can't find STA to configure HE\n"); 2235 return; 2236 } 2237 2238 if (!sta->he_cap.has_he) { 2239 rcu_read_unlock(); 2240 return; 2241 } 2242 2243 flags = 0; 2244 2245 /* HTC flags */ 2246 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 2247 IEEE80211_HE_MAC_CAP0_HTC_HE) 2248 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2249 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2250 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2251 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2252 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2253 u8 link_adap = 2254 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2255 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2256 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2257 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2258 2259 if (link_adap == 2) 2260 sta_ctxt_cmd.htc_flags |= 2261 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2262 else if (link_adap == 3) 2263 sta_ctxt_cmd.htc_flags |= 2264 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2265 } 2266 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2267 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2268 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2269 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2270 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2271 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2272 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2273 2274 /* 2275 * Initialize the PPE thresholds to "None" (7), as described in Table 2276 * 9-262ac of 80211.ax/D3.0. 2277 */ 2278 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2279 2280 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2281 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2282 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2283 u8 nss = (sta->he_cap.ppe_thres[0] & 2284 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2285 u8 ru_index_bitmap = 2286 (sta->he_cap.ppe_thres[0] & 2287 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2288 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2289 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2290 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2291 2292 /* 2293 * FW currently supports only nss == MAX_HE_SUPP_NSS 2294 * 2295 * If nss > MAX: we can ignore values we don't support 2296 * If nss < MAX: we can set zeros in other streams 2297 */ 2298 if (nss > MAX_HE_SUPP_NSS) { 2299 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2300 MAX_HE_SUPP_NSS); 2301 nss = MAX_HE_SUPP_NSS; 2302 } 2303 2304 for (i = 0; i < nss; i++) { 2305 u8 ru_index_tmp = ru_index_bitmap << 1; 2306 u8 bw; 2307 2308 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2309 ru_index_tmp >>= 1; 2310 if (!(ru_index_tmp & 1)) 2311 continue; 2312 2313 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2314 iwl_mvm_he_get_ppe_val(ppe, 2315 ppe_pos_bit); 2316 ppe_pos_bit += 2317 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2318 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2319 iwl_mvm_he_get_ppe_val(ppe, 2320 ppe_pos_bit); 2321 ppe_pos_bit += 2322 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2323 } 2324 } 2325 2326 flags |= STA_CTXT_HE_PACKET_EXT; 2327 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] & 2328 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) != 2329 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) { 2330 int low_th = -1; 2331 int high_th = -1; 2332 2333 /* Take the PPE thresholds from the nominal padding info */ 2334 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] & 2335 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) { 2336 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US: 2337 low_th = IWL_HE_PKT_EXT_NONE; 2338 high_th = IWL_HE_PKT_EXT_NONE; 2339 break; 2340 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US: 2341 low_th = IWL_HE_PKT_EXT_BPSK; 2342 high_th = IWL_HE_PKT_EXT_NONE; 2343 break; 2344 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US: 2345 low_th = IWL_HE_PKT_EXT_NONE; 2346 high_th = IWL_HE_PKT_EXT_BPSK; 2347 break; 2348 } 2349 2350 /* Set the PPE thresholds accordingly */ 2351 if (low_th >= 0 && high_th >= 0) { 2352 struct iwl_he_pkt_ext *pkt_ext = 2353 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext; 2354 2355 for (i = 0; i < MAX_HE_SUPP_NSS; i++) { 2356 u8 bw; 2357 2358 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; 2359 bw++) { 2360 pkt_ext->pkt_ext_qam_th[i][bw][0] = 2361 low_th; 2362 pkt_ext->pkt_ext_qam_th[i][bw][1] = 2363 high_th; 2364 } 2365 } 2366 2367 flags |= STA_CTXT_HE_PACKET_EXT; 2368 } 2369 } 2370 rcu_read_unlock(); 2371 2372 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2373 flags |= STA_CTXT_HE_MU_EDCA_CW; 2374 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 2375 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2376 &mvmvif->queue_params[i].mu_edca_param_rec; 2377 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 2378 2379 if (!mvmvif->queue_params[i].mu_edca) { 2380 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2381 break; 2382 } 2383 2384 sta_ctxt_cmd.trig_based_txf[ac].cwmin = 2385 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2386 sta_ctxt_cmd.trig_based_txf[ac].cwmax = 2387 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2388 sta_ctxt_cmd.trig_based_txf[ac].aifsn = 2389 cpu_to_le16(mu_edca->aifsn); 2390 sta_ctxt_cmd.trig_based_txf[ac].mu_time = 2391 cpu_to_le16(mu_edca->mu_edca_timer); 2392 } 2393 2394 if (vif->bss_conf.multi_sta_back_32bit) 2395 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2396 2397 if (vif->bss_conf.ack_enabled) 2398 flags |= STA_CTXT_HE_ACK_ENABLED; 2399 2400 if (vif->bss_conf.uora_exists) { 2401 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2402 2403 sta_ctxt_cmd.rand_alloc_ecwmin = 2404 vif->bss_conf.uora_ocw_range & 0x7; 2405 sta_ctxt_cmd.rand_alloc_ecwmax = 2406 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2407 } 2408 2409 if (vif->bss_conf.nontransmitted) { 2410 flags |= STA_CTXT_HE_REF_BSSID_VALID; 2411 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr, 2412 vif->bss_conf.transmitter_bssid); 2413 sta_ctxt_cmd.max_bssid_indicator = 2414 vif->bss_conf.bssid_indicator; 2415 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index; 2416 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap; 2417 sta_ctxt_cmd.profile_periodicity = 2418 vif->bss_conf.profile_periodicity; 2419 } 2420 2421 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2422 2423 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2424 DATA_PATH_GROUP, 0), 2425 0, size, &sta_ctxt_cmd)) 2426 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2427 } 2428 2429 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2430 struct ieee80211_vif *vif, 2431 struct ieee80211_bss_conf *bss_conf, 2432 u32 changes) 2433 { 2434 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2435 int ret; 2436 2437 /* 2438 * Re-calculate the tsf id, as the master-slave relations depend on the 2439 * beacon interval, which was not known when the station interface was 2440 * added. 2441 */ 2442 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2443 if (vif->bss_conf.he_support && 2444 !iwlwifi_mod_params.disable_11ax) 2445 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2446 2447 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2448 } 2449 2450 /* Update MU EDCA params */ 2451 if (changes & BSS_CHANGED_QOS && mvmvif->associated && 2452 bss_conf->assoc && vif->bss_conf.he_support && 2453 !iwlwifi_mod_params.disable_11ax) 2454 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2455 2456 /* 2457 * If we're not associated yet, take the (new) BSSID before associating 2458 * so the firmware knows. If we're already associated, then use the old 2459 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2460 * branch for disassociation below. 2461 */ 2462 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2463 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2464 2465 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2466 if (ret) 2467 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2468 2469 /* after sending it once, adopt mac80211 data */ 2470 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2471 mvmvif->associated = bss_conf->assoc; 2472 2473 if (changes & BSS_CHANGED_ASSOC) { 2474 if (bss_conf->assoc) { 2475 /* clear statistics to get clean beacon counter */ 2476 iwl_mvm_request_statistics(mvm, true); 2477 memset(&mvmvif->beacon_stats, 0, 2478 sizeof(mvmvif->beacon_stats)); 2479 2480 /* add quota for this interface */ 2481 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2482 if (ret) { 2483 IWL_ERR(mvm, "failed to update quotas\n"); 2484 return; 2485 } 2486 2487 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2488 &mvm->status)) { 2489 /* 2490 * If we're restarting then the firmware will 2491 * obviously have lost synchronisation with 2492 * the AP. It will attempt to synchronise by 2493 * itself, but we can make it more reliable by 2494 * scheduling a session protection time event. 2495 * 2496 * The firmware needs to receive a beacon to 2497 * catch up with synchronisation, use 110% of 2498 * the beacon interval. 2499 * 2500 * Set a large maximum delay to allow for more 2501 * than a single interface. 2502 */ 2503 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2504 iwl_mvm_protect_session(mvm, vif, dur, dur, 2505 5 * dur, false); 2506 } 2507 2508 iwl_mvm_sf_update(mvm, vif, false); 2509 iwl_mvm_power_vif_assoc(mvm, vif); 2510 if (vif->p2p) { 2511 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 2512 iwl_mvm_update_smps(mvm, vif, 2513 IWL_MVM_SMPS_REQ_PROT, 2514 IEEE80211_SMPS_DYNAMIC); 2515 } 2516 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2517 /* 2518 * If update fails - SF might be running in associated 2519 * mode while disassociated - which is forbidden. 2520 */ 2521 ret = iwl_mvm_sf_update(mvm, vif, false); 2522 WARN_ONCE(ret && 2523 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 2524 &mvm->status), 2525 "Failed to update SF upon disassociation\n"); 2526 2527 /* 2528 * If we get an assert during the connection (after the 2529 * station has been added, but before the vif is set 2530 * to associated), mac80211 will re-add the station and 2531 * then configure the vif. Since the vif is not 2532 * associated, we would remove the station here and 2533 * this would fail the recovery. 2534 */ 2535 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2536 &mvm->status)) { 2537 /* 2538 * Remove AP station now that 2539 * the MAC is unassoc 2540 */ 2541 ret = iwl_mvm_rm_sta_id(mvm, vif, 2542 mvmvif->ap_sta_id); 2543 if (ret) 2544 IWL_ERR(mvm, 2545 "failed to remove AP station\n"); 2546 2547 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 2548 mvm->d0i3_ap_sta_id = 2549 IWL_MVM_INVALID_STA; 2550 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2551 } 2552 2553 /* remove quota for this interface */ 2554 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2555 if (ret) 2556 IWL_ERR(mvm, "failed to update quotas\n"); 2557 2558 if (vif->p2p) 2559 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 2560 2561 /* this will take the cleared BSSID from bss_conf */ 2562 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2563 if (ret) 2564 IWL_ERR(mvm, 2565 "failed to update MAC %pM (clear after unassoc)\n", 2566 vif->addr); 2567 } 2568 2569 /* 2570 * The firmware tracks the MU-MIMO group on its own. 2571 * However, on HW restart we should restore this data. 2572 */ 2573 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2574 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2575 ret = iwl_mvm_update_mu_groups(mvm, vif); 2576 if (ret) 2577 IWL_ERR(mvm, 2578 "failed to update VHT MU_MIMO groups\n"); 2579 } 2580 2581 iwl_mvm_recalc_multicast(mvm); 2582 iwl_mvm_configure_bcast_filter(mvm); 2583 2584 /* reset rssi values */ 2585 mvmvif->bf_data.ave_beacon_signal = 0; 2586 2587 iwl_mvm_bt_coex_vif_change(mvm); 2588 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2589 IEEE80211_SMPS_AUTOMATIC); 2590 if (fw_has_capa(&mvm->fw->ucode_capa, 2591 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2592 iwl_mvm_config_scan(mvm); 2593 } 2594 2595 if (changes & BSS_CHANGED_BEACON_INFO) { 2596 /* 2597 * We received a beacon from the associated AP so 2598 * remove the session protection. 2599 */ 2600 iwl_mvm_stop_session_protection(mvm, vif); 2601 2602 iwl_mvm_sf_update(mvm, vif, false); 2603 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2604 } 2605 2606 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2607 /* 2608 * Send power command on every beacon change, 2609 * because we may have not enabled beacon abort yet. 2610 */ 2611 BSS_CHANGED_BEACON_INFO)) { 2612 ret = iwl_mvm_power_update_mac(mvm); 2613 if (ret) 2614 IWL_ERR(mvm, "failed to update power mode\n"); 2615 } 2616 2617 if (changes & BSS_CHANGED_TXPOWER) { 2618 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2619 bss_conf->txpower); 2620 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2621 } 2622 2623 if (changes & BSS_CHANGED_CQM) { 2624 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2625 /* reset cqm events tracking */ 2626 mvmvif->bf_data.last_cqm_event = 0; 2627 if (mvmvif->bf_data.bf_enabled) { 2628 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2629 if (ret) 2630 IWL_ERR(mvm, 2631 "failed to update CQM thresholds\n"); 2632 } 2633 } 2634 2635 if (changes & BSS_CHANGED_ARP_FILTER) { 2636 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2637 iwl_mvm_configure_bcast_filter(mvm); 2638 } 2639 } 2640 2641 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2642 struct ieee80211_vif *vif) 2643 { 2644 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2645 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2646 int ret, i; 2647 2648 /* 2649 * iwl_mvm_mac_ctxt_add() might read directly from the device 2650 * (the system time), so make sure it is available. 2651 */ 2652 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2653 if (ret) 2654 return ret; 2655 2656 mutex_lock(&mvm->mutex); 2657 2658 /* Send the beacon template */ 2659 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2660 if (ret) 2661 goto out_unlock; 2662 2663 /* 2664 * Re-calculate the tsf id, as the master-slave relations depend on the 2665 * beacon interval, which was not known when the AP interface was added. 2666 */ 2667 if (vif->type == NL80211_IFTYPE_AP) 2668 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2669 2670 mvmvif->ap_assoc_sta_count = 0; 2671 2672 /* Add the mac context */ 2673 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2674 if (ret) 2675 goto out_unlock; 2676 2677 /* Perform the binding */ 2678 ret = iwl_mvm_binding_add_vif(mvm, vif); 2679 if (ret) 2680 goto out_remove; 2681 2682 /* 2683 * This is not very nice, but the simplest: 2684 * For older FWs adding the mcast sta before the bcast station may 2685 * cause assert 0x2b00. 2686 * This is fixed in later FW so make the order of removal depend on 2687 * the TLV 2688 */ 2689 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2690 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2691 if (ret) 2692 goto out_unbind; 2693 /* 2694 * Send the bcast station. At this stage the TBTT and DTIM time 2695 * events are added and applied to the scheduler 2696 */ 2697 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2698 if (ret) { 2699 iwl_mvm_rm_mcast_sta(mvm, vif); 2700 goto out_unbind; 2701 } 2702 } else { 2703 /* 2704 * Send the bcast station. At this stage the TBTT and DTIM time 2705 * events are added and applied to the scheduler 2706 */ 2707 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2708 if (ret) 2709 goto out_unbind; 2710 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2711 if (ret) { 2712 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2713 goto out_unbind; 2714 } 2715 } 2716 2717 /* must be set before quota calculations */ 2718 mvmvif->ap_ibss_active = true; 2719 2720 /* send all the early keys to the device now */ 2721 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 2722 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i]; 2723 2724 if (!key) 2725 continue; 2726 2727 mvmvif->ap_early_keys[i] = NULL; 2728 2729 ret = iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); 2730 if (ret) 2731 goto out_quota_failed; 2732 } 2733 2734 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2735 iwl_mvm_vif_set_low_latency(mvmvif, true, 2736 LOW_LATENCY_VIF_TYPE); 2737 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2738 } 2739 2740 /* power updated needs to be done before quotas */ 2741 iwl_mvm_power_update_mac(mvm); 2742 2743 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2744 if (ret) 2745 goto out_quota_failed; 2746 2747 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2748 if (vif->p2p && mvm->p2p_device_vif) 2749 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2750 2751 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2752 2753 iwl_mvm_bt_coex_vif_change(mvm); 2754 2755 /* we don't support TDLS during DCM */ 2756 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2757 iwl_mvm_teardown_tdls_peers(mvm); 2758 2759 iwl_mvm_ftm_restart_responder(mvm, vif); 2760 2761 goto out_unlock; 2762 2763 out_quota_failed: 2764 iwl_mvm_power_update_mac(mvm); 2765 mvmvif->ap_ibss_active = false; 2766 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2767 iwl_mvm_rm_mcast_sta(mvm, vif); 2768 out_unbind: 2769 iwl_mvm_binding_remove_vif(mvm, vif); 2770 out_remove: 2771 iwl_mvm_mac_ctxt_remove(mvm, vif); 2772 out_unlock: 2773 mutex_unlock(&mvm->mutex); 2774 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2775 return ret; 2776 } 2777 2778 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2779 struct ieee80211_vif *vif) 2780 { 2781 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2782 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2783 2784 iwl_mvm_prepare_mac_removal(mvm, vif); 2785 2786 mutex_lock(&mvm->mutex); 2787 2788 /* Handle AP stop while in CSA */ 2789 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2790 iwl_mvm_remove_time_event(mvm, mvmvif, 2791 &mvmvif->time_event_data); 2792 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2793 mvmvif->csa_countdown = false; 2794 } 2795 2796 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2797 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2798 mvm->csa_tx_block_bcn_timeout = 0; 2799 } 2800 2801 mvmvif->ap_ibss_active = false; 2802 mvm->ap_last_beacon_gp2 = 0; 2803 2804 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2805 iwl_mvm_vif_set_low_latency(mvmvif, false, 2806 LOW_LATENCY_VIF_TYPE); 2807 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2808 } 2809 2810 iwl_mvm_bt_coex_vif_change(mvm); 2811 2812 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2813 2814 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2815 if (vif->p2p && mvm->p2p_device_vif) 2816 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2817 2818 iwl_mvm_update_quotas(mvm, false, NULL); 2819 2820 /* 2821 * This is not very nice, but the simplest: 2822 * For older FWs removing the mcast sta before the bcast station may 2823 * cause assert 0x2b00. 2824 * This is fixed in later FW (which will stop beaconing when removing 2825 * bcast station). 2826 * So make the order of removal depend on the TLV 2827 */ 2828 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2829 iwl_mvm_rm_mcast_sta(mvm, vif); 2830 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2831 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2832 iwl_mvm_rm_mcast_sta(mvm, vif); 2833 iwl_mvm_binding_remove_vif(mvm, vif); 2834 2835 iwl_mvm_power_update_mac(mvm); 2836 2837 iwl_mvm_mac_ctxt_remove(mvm, vif); 2838 2839 mutex_unlock(&mvm->mutex); 2840 } 2841 2842 static void 2843 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2844 struct ieee80211_vif *vif, 2845 struct ieee80211_bss_conf *bss_conf, 2846 u32 changes) 2847 { 2848 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2849 2850 /* Changes will be applied when the AP/IBSS is started */ 2851 if (!mvmvif->ap_ibss_active) 2852 return; 2853 2854 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2855 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2856 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2857 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2858 2859 /* Need to send a new beacon template to the FW */ 2860 if (changes & BSS_CHANGED_BEACON && 2861 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2862 IWL_WARN(mvm, "Failed updating beacon data\n"); 2863 2864 if (changes & BSS_CHANGED_TXPOWER) { 2865 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2866 bss_conf->txpower); 2867 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2868 } 2869 2870 if (changes & BSS_CHANGED_FTM_RESPONDER) { 2871 int ret = iwl_mvm_ftm_start_responder(mvm, vif); 2872 2873 if (ret) 2874 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n", 2875 ret); 2876 } 2877 2878 } 2879 2880 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2881 struct ieee80211_vif *vif, 2882 struct ieee80211_bss_conf *bss_conf, 2883 u32 changes) 2884 { 2885 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2886 2887 /* 2888 * iwl_mvm_bss_info_changed_station() might call 2889 * iwl_mvm_protect_session(), which reads directly from 2890 * the device (the system time), so make sure it is available. 2891 */ 2892 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2893 return; 2894 2895 mutex_lock(&mvm->mutex); 2896 2897 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2898 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2899 2900 switch (vif->type) { 2901 case NL80211_IFTYPE_STATION: 2902 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2903 break; 2904 case NL80211_IFTYPE_AP: 2905 case NL80211_IFTYPE_ADHOC: 2906 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2907 break; 2908 case NL80211_IFTYPE_MONITOR: 2909 if (changes & BSS_CHANGED_MU_GROUPS) 2910 iwl_mvm_update_mu_groups(mvm, vif); 2911 break; 2912 default: 2913 /* shouldn't happen */ 2914 WARN_ON_ONCE(1); 2915 } 2916 2917 mutex_unlock(&mvm->mutex); 2918 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2919 } 2920 2921 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2922 struct ieee80211_vif *vif, 2923 struct ieee80211_scan_request *hw_req) 2924 { 2925 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2926 int ret; 2927 2928 if (hw_req->req.n_channels == 0 || 2929 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2930 return -EINVAL; 2931 2932 mutex_lock(&mvm->mutex); 2933 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2934 mutex_unlock(&mvm->mutex); 2935 2936 return ret; 2937 } 2938 2939 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2940 struct ieee80211_vif *vif) 2941 { 2942 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2943 2944 mutex_lock(&mvm->mutex); 2945 2946 /* Due to a race condition, it's possible that mac80211 asks 2947 * us to stop a hw_scan when it's already stopped. This can 2948 * happen, for instance, if we stopped the scan ourselves, 2949 * called ieee80211_scan_completed() and the userspace called 2950 * cancel scan scan before ieee80211_scan_work() could run. 2951 * To handle that, simply return if the scan is not running. 2952 */ 2953 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2954 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2955 2956 mutex_unlock(&mvm->mutex); 2957 } 2958 2959 static void 2960 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2961 struct ieee80211_sta *sta, u16 tids, 2962 int num_frames, 2963 enum ieee80211_frame_release_type reason, 2964 bool more_data) 2965 { 2966 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2967 2968 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2969 2970 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2971 tids, more_data, false); 2972 } 2973 2974 static void 2975 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2976 struct ieee80211_sta *sta, u16 tids, 2977 int num_frames, 2978 enum ieee80211_frame_release_type reason, 2979 bool more_data) 2980 { 2981 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2982 2983 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2984 2985 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2986 tids, more_data, true); 2987 } 2988 2989 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2990 enum sta_notify_cmd cmd, 2991 struct ieee80211_sta *sta) 2992 { 2993 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2994 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2995 unsigned long txqs = 0, tids = 0; 2996 int tid; 2997 2998 /* 2999 * If we have TVQM then we get too high queue numbers - luckily 3000 * we really shouldn't get here with that because such hardware 3001 * should have firmware supporting buffer station offload. 3002 */ 3003 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 3004 return; 3005 3006 spin_lock_bh(&mvmsta->lock); 3007 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) { 3008 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3009 3010 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 3011 continue; 3012 3013 __set_bit(tid_data->txq_id, &txqs); 3014 3015 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 3016 continue; 3017 3018 __set_bit(tid, &tids); 3019 } 3020 3021 switch (cmd) { 3022 case STA_NOTIFY_SLEEP: 3023 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 3024 ieee80211_sta_set_buffered(sta, tid, true); 3025 3026 if (txqs) 3027 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 3028 /* 3029 * The fw updates the STA to be asleep. Tx packets on the Tx 3030 * queues to this station will not be transmitted. The fw will 3031 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 3032 */ 3033 break; 3034 case STA_NOTIFY_AWAKE: 3035 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 3036 break; 3037 3038 if (txqs) 3039 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 3040 iwl_mvm_sta_modify_ps_wake(mvm, sta); 3041 break; 3042 default: 3043 break; 3044 } 3045 spin_unlock_bh(&mvmsta->lock); 3046 } 3047 3048 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 3049 struct ieee80211_vif *vif, 3050 enum sta_notify_cmd cmd, 3051 struct ieee80211_sta *sta) 3052 { 3053 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 3054 } 3055 3056 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 3057 { 3058 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3059 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 3060 struct ieee80211_sta *sta; 3061 struct iwl_mvm_sta *mvmsta; 3062 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 3063 3064 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 3065 return; 3066 3067 rcu_read_lock(); 3068 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 3069 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 3070 rcu_read_unlock(); 3071 return; 3072 } 3073 3074 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3075 3076 if (!mvmsta->vif || 3077 mvmsta->vif->type != NL80211_IFTYPE_AP) { 3078 rcu_read_unlock(); 3079 return; 3080 } 3081 3082 if (mvmsta->sleeping != sleeping) { 3083 mvmsta->sleeping = sleeping; 3084 __iwl_mvm_mac_sta_notify(mvm->hw, 3085 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 3086 sta); 3087 ieee80211_sta_ps_transition(sta, sleeping); 3088 } 3089 3090 if (sleeping) { 3091 switch (notif->type) { 3092 case IWL_MVM_PM_EVENT_AWAKE: 3093 case IWL_MVM_PM_EVENT_ASLEEP: 3094 break; 3095 case IWL_MVM_PM_EVENT_UAPSD: 3096 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 3097 break; 3098 case IWL_MVM_PM_EVENT_PS_POLL: 3099 ieee80211_sta_pspoll(sta); 3100 break; 3101 default: 3102 break; 3103 } 3104 } 3105 3106 rcu_read_unlock(); 3107 } 3108 3109 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 3110 struct ieee80211_vif *vif, 3111 struct ieee80211_sta *sta) 3112 { 3113 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3114 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3115 3116 /* 3117 * This is called before mac80211 does RCU synchronisation, 3118 * so here we already invalidate our internal RCU-protected 3119 * station pointer. The rest of the code will thus no longer 3120 * be able to find the station this way, and we don't rely 3121 * on further RCU synchronisation after the sta_state() 3122 * callback deleted the station. 3123 */ 3124 mutex_lock(&mvm->mutex); 3125 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 3126 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 3127 ERR_PTR(-ENOENT)); 3128 3129 mutex_unlock(&mvm->mutex); 3130 } 3131 3132 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3133 const u8 *bssid) 3134 { 3135 int i; 3136 3137 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3138 struct iwl_mvm_tcm_mac *mdata; 3139 3140 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 3141 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 3142 mdata->opened_rx_ba_sessions = false; 3143 } 3144 3145 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 3146 return; 3147 3148 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 3149 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 3150 return; 3151 } 3152 3153 if (!vif->p2p && 3154 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 3155 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 3156 return; 3157 } 3158 3159 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 3160 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 3161 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 3162 return; 3163 } 3164 } 3165 3166 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 3167 } 3168 3169 static void 3170 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 3171 struct ieee80211_vif *vif, u8 *peer_addr, 3172 enum nl80211_tdls_operation action) 3173 { 3174 struct iwl_fw_dbg_trigger_tlv *trig; 3175 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 3176 3177 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 3178 FW_DBG_TRIGGER_TDLS); 3179 if (!trig) 3180 return; 3181 3182 tdls_trig = (void *)trig->data; 3183 3184 if (!(tdls_trig->action_bitmap & BIT(action))) 3185 return; 3186 3187 if (tdls_trig->peer_mode && 3188 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 3189 return; 3190 3191 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 3192 "TDLS event occurred, peer %pM, action %d", 3193 peer_addr, action); 3194 } 3195 3196 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 3197 struct ieee80211_vif *vif, 3198 struct ieee80211_sta *sta, 3199 enum ieee80211_sta_state old_state, 3200 enum ieee80211_sta_state new_state) 3201 { 3202 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3203 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3204 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3205 int ret; 3206 3207 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 3208 sta->addr, old_state, new_state); 3209 3210 /* this would be a mac80211 bug ... but don't crash */ 3211 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 3212 return -EINVAL; 3213 3214 /* 3215 * If we are in a STA removal flow and in DQA mode: 3216 * 3217 * This is after the sync_rcu part, so the queues have already been 3218 * flushed. No more TXs on their way in mac80211's path, and no more in 3219 * the queues. 3220 * Also, we won't be getting any new TX frames for this station. 3221 * What we might have are deferred TX frames that need to be taken care 3222 * of. 3223 * 3224 * Drop any still-queued deferred-frame before removing the STA, and 3225 * make sure the worker is no longer handling frames for this STA. 3226 */ 3227 if (old_state == IEEE80211_STA_NONE && 3228 new_state == IEEE80211_STA_NOTEXIST) { 3229 flush_work(&mvm->add_stream_wk); 3230 3231 /* 3232 * No need to make sure deferred TX indication is off since the 3233 * worker will already remove it if it was on 3234 */ 3235 } 3236 3237 mutex_lock(&mvm->mutex); 3238 /* track whether or not the station is associated */ 3239 mvm_sta->sta_state = new_state; 3240 3241 if (old_state == IEEE80211_STA_NOTEXIST && 3242 new_state == IEEE80211_STA_NONE) { 3243 /* 3244 * Firmware bug - it'll crash if the beacon interval is less 3245 * than 16. We can't avoid connecting at all, so refuse the 3246 * station state change, this will cause mac80211 to abandon 3247 * attempts to connect to this AP, and eventually wpa_s will 3248 * blacklist the AP... 3249 */ 3250 if (vif->type == NL80211_IFTYPE_STATION && 3251 vif->bss_conf.beacon_int < 16) { 3252 IWL_ERR(mvm, 3253 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 3254 sta->addr, vif->bss_conf.beacon_int); 3255 ret = -EINVAL; 3256 goto out_unlock; 3257 } 3258 3259 if (sta->tdls && 3260 (vif->p2p || 3261 iwl_mvm_tdls_sta_count(mvm, NULL) == 3262 IWL_MVM_TDLS_STA_COUNT || 3263 iwl_mvm_phy_ctx_count(mvm) > 1)) { 3264 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 3265 ret = -EBUSY; 3266 goto out_unlock; 3267 } 3268 3269 ret = iwl_mvm_add_sta(mvm, vif, sta); 3270 if (sta->tdls && ret == 0) { 3271 iwl_mvm_recalc_tdls_state(mvm, vif, true); 3272 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3273 NL80211_TDLS_SETUP); 3274 } 3275 3276 sta->max_rc_amsdu_len = 1; 3277 } else if (old_state == IEEE80211_STA_NONE && 3278 new_state == IEEE80211_STA_AUTH) { 3279 /* 3280 * EBS may be disabled due to previous failures reported by FW. 3281 * Reset EBS status here assuming environment has been changed. 3282 */ 3283 mvm->last_ebs_successful = true; 3284 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 3285 ret = 0; 3286 } else if (old_state == IEEE80211_STA_AUTH && 3287 new_state == IEEE80211_STA_ASSOC) { 3288 if (vif->type == NL80211_IFTYPE_AP) { 3289 vif->bss_conf.he_support = sta->he_cap.has_he; 3290 mvmvif->ap_assoc_sta_count++; 3291 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3292 if (vif->bss_conf.he_support && 3293 !iwlwifi_mod_params.disable_11ax) 3294 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 3295 } else if (vif->type == NL80211_IFTYPE_STATION) { 3296 vif->bss_conf.he_support = sta->he_cap.has_he; 3297 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3298 } 3299 3300 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3301 false); 3302 ret = iwl_mvm_update_sta(mvm, vif, sta); 3303 } else if (old_state == IEEE80211_STA_ASSOC && 3304 new_state == IEEE80211_STA_AUTHORIZED) { 3305 ret = 0; 3306 3307 /* we don't support TDLS during DCM */ 3308 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3309 iwl_mvm_teardown_tdls_peers(mvm); 3310 3311 if (sta->tdls) 3312 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3313 NL80211_TDLS_ENABLE_LINK); 3314 3315 /* enable beacon filtering */ 3316 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3317 3318 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3319 true); 3320 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3321 new_state == IEEE80211_STA_ASSOC) { 3322 /* disable beacon filtering */ 3323 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3324 WARN_ON(ret && 3325 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3326 &mvm->status)); 3327 ret = 0; 3328 } else if (old_state == IEEE80211_STA_ASSOC && 3329 new_state == IEEE80211_STA_AUTH) { 3330 if (vif->type == NL80211_IFTYPE_AP) { 3331 mvmvif->ap_assoc_sta_count--; 3332 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3333 } 3334 ret = 0; 3335 } else if (old_state == IEEE80211_STA_AUTH && 3336 new_state == IEEE80211_STA_NONE) { 3337 ret = 0; 3338 } else if (old_state == IEEE80211_STA_NONE && 3339 new_state == IEEE80211_STA_NOTEXIST) { 3340 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3341 if (sta->tdls) { 3342 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3343 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3344 NL80211_TDLS_DISABLE_LINK); 3345 } 3346 3347 if (unlikely(ret && 3348 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3349 &mvm->status))) 3350 ret = 0; 3351 } else { 3352 ret = -EIO; 3353 } 3354 out_unlock: 3355 mutex_unlock(&mvm->mutex); 3356 3357 if (sta->tdls && ret == 0) { 3358 if (old_state == IEEE80211_STA_NOTEXIST && 3359 new_state == IEEE80211_STA_NONE) 3360 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3361 else if (old_state == IEEE80211_STA_NONE && 3362 new_state == IEEE80211_STA_NOTEXIST) 3363 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3364 } 3365 3366 return ret; 3367 } 3368 3369 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3370 { 3371 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3372 3373 mvm->rts_threshold = value; 3374 3375 return 0; 3376 } 3377 3378 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3379 struct ieee80211_vif *vif, 3380 struct ieee80211_sta *sta, u32 changed) 3381 { 3382 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3383 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3384 3385 if (changed & (IEEE80211_RC_BW_CHANGED | 3386 IEEE80211_RC_SUPP_RATES_CHANGED | 3387 IEEE80211_RC_NSS_CHANGED)) 3388 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3389 true); 3390 3391 if (vif->type == NL80211_IFTYPE_STATION && 3392 changed & IEEE80211_RC_NSS_CHANGED) 3393 iwl_mvm_sf_update(mvm, vif, false); 3394 } 3395 3396 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3397 struct ieee80211_vif *vif, u16 ac, 3398 const struct ieee80211_tx_queue_params *params) 3399 { 3400 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3401 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3402 3403 mvmvif->queue_params[ac] = *params; 3404 3405 /* 3406 * No need to update right away, we'll get BSS_CHANGED_QOS 3407 * The exception is P2P_DEVICE interface which needs immediate update. 3408 */ 3409 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3410 int ret; 3411 3412 mutex_lock(&mvm->mutex); 3413 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3414 mutex_unlock(&mvm->mutex); 3415 return ret; 3416 } 3417 return 0; 3418 } 3419 3420 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3421 struct ieee80211_vif *vif, 3422 u16 req_duration) 3423 { 3424 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3425 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3426 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3427 3428 /* 3429 * iwl_mvm_protect_session() reads directly from the device 3430 * (the system time), so make sure it is available. 3431 */ 3432 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 3433 return; 3434 3435 if (req_duration > duration) 3436 duration = req_duration; 3437 3438 mutex_lock(&mvm->mutex); 3439 /* Try really hard to protect the session and hear a beacon */ 3440 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 3441 mutex_unlock(&mvm->mutex); 3442 3443 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 3444 } 3445 3446 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3447 struct ieee80211_vif *vif, 3448 struct cfg80211_sched_scan_request *req, 3449 struct ieee80211_scan_ies *ies) 3450 { 3451 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3452 3453 int ret; 3454 3455 mutex_lock(&mvm->mutex); 3456 3457 if (!vif->bss_conf.idle) { 3458 ret = -EBUSY; 3459 goto out; 3460 } 3461 3462 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3463 3464 out: 3465 mutex_unlock(&mvm->mutex); 3466 return ret; 3467 } 3468 3469 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3470 struct ieee80211_vif *vif) 3471 { 3472 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3473 int ret; 3474 3475 mutex_lock(&mvm->mutex); 3476 3477 /* Due to a race condition, it's possible that mac80211 asks 3478 * us to stop a sched_scan when it's already stopped. This 3479 * can happen, for instance, if we stopped the scan ourselves, 3480 * called ieee80211_sched_scan_stopped() and the userspace called 3481 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3482 * could run. To handle this, simply return if the scan is 3483 * not running. 3484 */ 3485 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3486 mutex_unlock(&mvm->mutex); 3487 return 0; 3488 } 3489 3490 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3491 mutex_unlock(&mvm->mutex); 3492 iwl_mvm_wait_for_async_handlers(mvm); 3493 3494 return ret; 3495 } 3496 3497 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3498 enum set_key_cmd cmd, 3499 struct ieee80211_vif *vif, 3500 struct ieee80211_sta *sta, 3501 struct ieee80211_key_conf *key) 3502 { 3503 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3504 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3505 struct iwl_mvm_sta *mvmsta; 3506 struct iwl_mvm_key_pn *ptk_pn; 3507 int keyidx = key->keyidx; 3508 int ret, i; 3509 u8 key_offset; 3510 3511 if (iwlwifi_mod_params.swcrypto) { 3512 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 3513 return -EOPNOTSUPP; 3514 } 3515 3516 switch (key->cipher) { 3517 case WLAN_CIPHER_SUITE_TKIP: 3518 if (!mvm->trans->cfg->gen2) { 3519 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3520 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3521 } else if (vif->type == NL80211_IFTYPE_STATION) { 3522 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3523 } else { 3524 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3525 return -EOPNOTSUPP; 3526 } 3527 break; 3528 case WLAN_CIPHER_SUITE_CCMP: 3529 case WLAN_CIPHER_SUITE_GCMP: 3530 case WLAN_CIPHER_SUITE_GCMP_256: 3531 if (!iwl_mvm_has_new_tx_api(mvm)) 3532 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3533 break; 3534 case WLAN_CIPHER_SUITE_AES_CMAC: 3535 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3536 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3537 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3538 break; 3539 case WLAN_CIPHER_SUITE_WEP40: 3540 case WLAN_CIPHER_SUITE_WEP104: 3541 if (vif->type == NL80211_IFTYPE_STATION) 3542 break; 3543 if (iwl_mvm_has_new_tx_api(mvm)) 3544 return -EOPNOTSUPP; 3545 /* support HW crypto on TX */ 3546 return 0; 3547 default: 3548 /* currently FW supports only one optional cipher scheme */ 3549 if (hw->n_cipher_schemes && 3550 hw->cipher_schemes->cipher == key->cipher) 3551 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3552 else 3553 return -EOPNOTSUPP; 3554 } 3555 3556 mutex_lock(&mvm->mutex); 3557 3558 switch (cmd) { 3559 case SET_KEY: 3560 if ((vif->type == NL80211_IFTYPE_ADHOC || 3561 vif->type == NL80211_IFTYPE_AP) && !sta) { 3562 /* 3563 * GTK on AP interface is a TX-only key, return 0; 3564 * on IBSS they're per-station and because we're lazy 3565 * we don't support them for RX, so do the same. 3566 * CMAC/GMAC in AP/IBSS modes must be done in software. 3567 */ 3568 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3569 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3570 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3571 ret = -EOPNOTSUPP; 3572 else 3573 ret = 0; 3574 3575 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3576 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3577 !iwl_mvm_has_new_tx_api(mvm)) { 3578 key->hw_key_idx = STA_KEY_IDX_INVALID; 3579 break; 3580 } 3581 3582 if (!mvmvif->ap_ibss_active) { 3583 for (i = 0; 3584 i < ARRAY_SIZE(mvmvif->ap_early_keys); 3585 i++) { 3586 if (!mvmvif->ap_early_keys[i]) { 3587 mvmvif->ap_early_keys[i] = key; 3588 break; 3589 } 3590 } 3591 3592 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys)) 3593 ret = -ENOSPC; 3594 3595 break; 3596 } 3597 } 3598 3599 /* During FW restart, in order to restore the state as it was, 3600 * don't try to reprogram keys we previously failed for. 3601 */ 3602 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3603 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3604 IWL_DEBUG_MAC80211(mvm, 3605 "skip invalid idx key programming during restart\n"); 3606 ret = 0; 3607 break; 3608 } 3609 3610 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3611 sta && iwl_mvm_has_new_rx_api(mvm) && 3612 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3613 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3614 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3615 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3616 struct ieee80211_key_seq seq; 3617 int tid, q; 3618 3619 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3620 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3621 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3622 mvm->trans->num_rx_queues), 3623 GFP_KERNEL); 3624 if (!ptk_pn) { 3625 ret = -ENOMEM; 3626 break; 3627 } 3628 3629 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3630 ieee80211_get_key_rx_seq(key, tid, &seq); 3631 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3632 memcpy(ptk_pn->q[q].pn[tid], 3633 seq.ccmp.pn, 3634 IEEE80211_CCMP_PN_LEN); 3635 } 3636 3637 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3638 } 3639 3640 /* in HW restart reuse the index, otherwise request a new one */ 3641 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3642 key_offset = key->hw_key_idx; 3643 else 3644 key_offset = STA_KEY_IDX_INVALID; 3645 3646 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3647 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3648 if (ret) { 3649 IWL_WARN(mvm, "set key failed\n"); 3650 key->hw_key_idx = STA_KEY_IDX_INVALID; 3651 /* 3652 * can't add key for RX, but we don't need it 3653 * in the device for TX so still return 0, 3654 * unless we have new TX API where we cannot 3655 * put key material into the TX_CMD 3656 */ 3657 if (iwl_mvm_has_new_tx_api(mvm)) 3658 ret = -EOPNOTSUPP; 3659 else 3660 ret = 0; 3661 } 3662 3663 break; 3664 case DISABLE_KEY: 3665 ret = -ENOENT; 3666 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 3667 if (mvmvif->ap_early_keys[i] == key) { 3668 mvmvif->ap_early_keys[i] = NULL; 3669 ret = 0; 3670 } 3671 } 3672 3673 /* found in pending list - don't do anything else */ 3674 if (ret == 0) 3675 break; 3676 3677 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3678 ret = 0; 3679 break; 3680 } 3681 3682 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3683 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3684 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3685 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3686 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3687 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3688 ptk_pn = rcu_dereference_protected( 3689 mvmsta->ptk_pn[keyidx], 3690 lockdep_is_held(&mvm->mutex)); 3691 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3692 if (ptk_pn) 3693 kfree_rcu(ptk_pn, rcu_head); 3694 } 3695 3696 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3697 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3698 break; 3699 default: 3700 ret = -EINVAL; 3701 } 3702 3703 mutex_unlock(&mvm->mutex); 3704 return ret; 3705 } 3706 3707 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3708 struct ieee80211_vif *vif, 3709 struct ieee80211_key_conf *keyconf, 3710 struct ieee80211_sta *sta, 3711 u32 iv32, u16 *phase1key) 3712 { 3713 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3714 3715 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3716 return; 3717 3718 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3719 } 3720 3721 3722 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3723 struct iwl_rx_packet *pkt, void *data) 3724 { 3725 struct iwl_mvm *mvm = 3726 container_of(notif_wait, struct iwl_mvm, notif_wait); 3727 struct iwl_hs20_roc_res *resp; 3728 int resp_len = iwl_rx_packet_payload_len(pkt); 3729 struct iwl_mvm_time_event_data *te_data = data; 3730 3731 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3732 return true; 3733 3734 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3735 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3736 return true; 3737 } 3738 3739 resp = (void *)pkt->data; 3740 3741 IWL_DEBUG_TE(mvm, 3742 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3743 resp->status, resp->event_unique_id); 3744 3745 te_data->uid = le32_to_cpu(resp->event_unique_id); 3746 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3747 te_data->uid); 3748 3749 spin_lock_bh(&mvm->time_event_lock); 3750 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3751 spin_unlock_bh(&mvm->time_event_lock); 3752 3753 return true; 3754 } 3755 3756 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3757 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3758 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3759 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3760 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3761 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3762 struct ieee80211_channel *channel, 3763 struct ieee80211_vif *vif, 3764 int duration) 3765 { 3766 int res; 3767 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3768 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3769 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3770 struct iwl_notification_wait wait_time_event; 3771 u32 dtim_interval = vif->bss_conf.dtim_period * 3772 vif->bss_conf.beacon_int; 3773 u32 req_dur, delay; 3774 struct iwl_hs20_roc_req aux_roc_req = { 3775 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3776 .id_and_color = 3777 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3778 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3779 }; 3780 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm, 3781 &aux_roc_req.channel_info); 3782 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm); 3783 3784 /* Set the channel info data */ 3785 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value, 3786 (channel->band == NL80211_BAND_2GHZ) ? 3787 PHY_BAND_24 : PHY_BAND_5, 3788 PHY_VHT_CHANNEL_MODE20, 3789 0); 3790 3791 /* Set the time and duration */ 3792 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm)); 3793 3794 delay = AUX_ROC_MIN_DELAY; 3795 req_dur = MSEC_TO_TU(duration); 3796 3797 /* 3798 * If we are associated we want the delay time to be at least one 3799 * dtim interval so that the FW can wait until after the DTIM and 3800 * then start the time event, this will potentially allow us to 3801 * remain off-channel for the max duration. 3802 * Since we want to use almost a whole dtim interval we would also 3803 * like the delay to be for 2-3 dtim intervals, in case there are 3804 * other time events with higher priority. 3805 */ 3806 if (vif->bss_conf.assoc) { 3807 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3808 /* We cannot remain off-channel longer than the DTIM interval */ 3809 if (dtim_interval <= req_dur) { 3810 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3811 if (req_dur <= AUX_ROC_MIN_DURATION) 3812 req_dur = dtim_interval - 3813 AUX_ROC_MIN_SAFETY_BUFFER; 3814 } 3815 } 3816 3817 tail->duration = cpu_to_le32(req_dur); 3818 tail->apply_time_max_delay = cpu_to_le32(delay); 3819 3820 IWL_DEBUG_TE(mvm, 3821 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3822 channel->hw_value, req_dur, duration, delay, 3823 dtim_interval); 3824 /* Set the node address */ 3825 memcpy(tail->node_addr, vif->addr, ETH_ALEN); 3826 3827 lockdep_assert_held(&mvm->mutex); 3828 3829 spin_lock_bh(&mvm->time_event_lock); 3830 3831 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3832 spin_unlock_bh(&mvm->time_event_lock); 3833 return -EIO; 3834 } 3835 3836 te_data->vif = vif; 3837 te_data->duration = duration; 3838 te_data->id = HOT_SPOT_CMD; 3839 3840 spin_unlock_bh(&mvm->time_event_lock); 3841 3842 /* 3843 * Use a notification wait, which really just processes the 3844 * command response and doesn't wait for anything, in order 3845 * to be able to process the response and get the UID inside 3846 * the RX path. Using CMD_WANT_SKB doesn't work because it 3847 * stores the buffer and then wakes up this thread, by which 3848 * time another notification (that the time event started) 3849 * might already be processed unsuccessfully. 3850 */ 3851 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3852 time_event_response, 3853 ARRAY_SIZE(time_event_response), 3854 iwl_mvm_rx_aux_roc, te_data); 3855 3856 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len, 3857 &aux_roc_req); 3858 3859 if (res) { 3860 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3861 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3862 goto out_clear_te; 3863 } 3864 3865 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3866 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3867 /* should never fail */ 3868 WARN_ON_ONCE(res); 3869 3870 if (res) { 3871 out_clear_te: 3872 spin_lock_bh(&mvm->time_event_lock); 3873 iwl_mvm_te_clear_data(mvm, te_data); 3874 spin_unlock_bh(&mvm->time_event_lock); 3875 } 3876 3877 return res; 3878 } 3879 3880 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3881 struct ieee80211_vif *vif, 3882 struct ieee80211_channel *channel, 3883 int duration, 3884 enum ieee80211_roc_type type) 3885 { 3886 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3887 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3888 struct cfg80211_chan_def chandef; 3889 struct iwl_mvm_phy_ctxt *phy_ctxt; 3890 int ret, i; 3891 3892 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3893 duration, type); 3894 3895 /* 3896 * Flush the done work, just in case it's still pending, so that 3897 * the work it does can complete and we can accept new frames. 3898 */ 3899 flush_work(&mvm->roc_done_wk); 3900 3901 mutex_lock(&mvm->mutex); 3902 3903 switch (vif->type) { 3904 case NL80211_IFTYPE_STATION: 3905 if (fw_has_capa(&mvm->fw->ucode_capa, 3906 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3907 /* Use aux roc framework (HS20) */ 3908 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3909 vif, duration); 3910 goto out_unlock; 3911 } 3912 IWL_ERR(mvm, "hotspot not supported\n"); 3913 ret = -EINVAL; 3914 goto out_unlock; 3915 case NL80211_IFTYPE_P2P_DEVICE: 3916 /* handle below */ 3917 break; 3918 default: 3919 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3920 ret = -EINVAL; 3921 goto out_unlock; 3922 } 3923 3924 for (i = 0; i < NUM_PHY_CTX; i++) { 3925 phy_ctxt = &mvm->phy_ctxts[i]; 3926 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3927 continue; 3928 3929 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3930 /* 3931 * Unbind the P2P_DEVICE from the current PHY context, 3932 * and if the PHY context is not used remove it. 3933 */ 3934 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3935 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3936 goto out_unlock; 3937 3938 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3939 3940 /* Bind the P2P_DEVICE to the current PHY Context */ 3941 mvmvif->phy_ctxt = phy_ctxt; 3942 3943 ret = iwl_mvm_binding_add_vif(mvm, vif); 3944 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3945 goto out_unlock; 3946 3947 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3948 goto schedule_time_event; 3949 } 3950 } 3951 3952 /* Need to update the PHY context only if the ROC channel changed */ 3953 if (channel == mvmvif->phy_ctxt->channel) 3954 goto schedule_time_event; 3955 3956 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3957 3958 /* 3959 * Change the PHY context configuration as it is currently referenced 3960 * only by the P2P Device MAC 3961 */ 3962 if (mvmvif->phy_ctxt->ref == 1) { 3963 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3964 &chandef, 1, 1); 3965 if (ret) 3966 goto out_unlock; 3967 } else { 3968 /* 3969 * The PHY context is shared with other MACs. Need to remove the 3970 * P2P Device from the binding, allocate an new PHY context and 3971 * create a new binding 3972 */ 3973 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3974 if (!phy_ctxt) { 3975 ret = -ENOSPC; 3976 goto out_unlock; 3977 } 3978 3979 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3980 1, 1); 3981 if (ret) { 3982 IWL_ERR(mvm, "Failed to change PHY context\n"); 3983 goto out_unlock; 3984 } 3985 3986 /* Unbind the P2P_DEVICE from the current PHY context */ 3987 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3988 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3989 goto out_unlock; 3990 3991 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3992 3993 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3994 mvmvif->phy_ctxt = phy_ctxt; 3995 3996 ret = iwl_mvm_binding_add_vif(mvm, vif); 3997 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3998 goto out_unlock; 3999 4000 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 4001 } 4002 4003 schedule_time_event: 4004 /* Schedule the time events */ 4005 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 4006 4007 out_unlock: 4008 mutex_unlock(&mvm->mutex); 4009 IWL_DEBUG_MAC80211(mvm, "leave\n"); 4010 return ret; 4011 } 4012 4013 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 4014 { 4015 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4016 4017 IWL_DEBUG_MAC80211(mvm, "enter\n"); 4018 4019 mutex_lock(&mvm->mutex); 4020 iwl_mvm_stop_roc(mvm); 4021 mutex_unlock(&mvm->mutex); 4022 4023 IWL_DEBUG_MAC80211(mvm, "leave\n"); 4024 return 0; 4025 } 4026 4027 struct iwl_mvm_ftm_responder_iter_data { 4028 bool responder; 4029 struct ieee80211_chanctx_conf *ctx; 4030 }; 4031 4032 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac, 4033 struct ieee80211_vif *vif) 4034 { 4035 struct iwl_mvm_ftm_responder_iter_data *data = _data; 4036 4037 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx && 4038 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params) 4039 data->responder = true; 4040 } 4041 4042 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm, 4043 struct ieee80211_chanctx_conf *ctx) 4044 { 4045 struct iwl_mvm_ftm_responder_iter_data data = { 4046 .responder = false, 4047 .ctx = ctx, 4048 }; 4049 4050 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 4051 IEEE80211_IFACE_ITER_NORMAL, 4052 iwl_mvm_ftm_responder_chanctx_iter, 4053 &data); 4054 return data.responder; 4055 } 4056 4057 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 4058 struct ieee80211_chanctx_conf *ctx) 4059 { 4060 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4061 struct iwl_mvm_phy_ctxt *phy_ctxt; 4062 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4063 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4064 int ret; 4065 4066 lockdep_assert_held(&mvm->mutex); 4067 4068 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 4069 4070 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 4071 if (!phy_ctxt) { 4072 ret = -ENOSPC; 4073 goto out; 4074 } 4075 4076 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4077 ctx->rx_chains_static, 4078 ctx->rx_chains_dynamic); 4079 if (ret) { 4080 IWL_ERR(mvm, "Failed to add PHY context\n"); 4081 goto out; 4082 } 4083 4084 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 4085 *phy_ctxt_id = phy_ctxt->id; 4086 out: 4087 return ret; 4088 } 4089 4090 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 4091 struct ieee80211_chanctx_conf *ctx) 4092 { 4093 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4094 int ret; 4095 4096 mutex_lock(&mvm->mutex); 4097 ret = __iwl_mvm_add_chanctx(mvm, ctx); 4098 mutex_unlock(&mvm->mutex); 4099 4100 return ret; 4101 } 4102 4103 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 4104 struct ieee80211_chanctx_conf *ctx) 4105 { 4106 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4107 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4108 4109 lockdep_assert_held(&mvm->mutex); 4110 4111 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 4112 } 4113 4114 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 4115 struct ieee80211_chanctx_conf *ctx) 4116 { 4117 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4118 4119 mutex_lock(&mvm->mutex); 4120 __iwl_mvm_remove_chanctx(mvm, ctx); 4121 mutex_unlock(&mvm->mutex); 4122 } 4123 4124 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 4125 struct ieee80211_chanctx_conf *ctx, 4126 u32 changed) 4127 { 4128 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4129 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4130 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4131 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4132 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4133 4134 if (WARN_ONCE((phy_ctxt->ref > 1) && 4135 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 4136 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 4137 IEEE80211_CHANCTX_CHANGE_RADAR | 4138 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 4139 "Cannot change PHY. Ref=%d, changed=0x%X\n", 4140 phy_ctxt->ref, changed)) 4141 return; 4142 4143 mutex_lock(&mvm->mutex); 4144 4145 /* we are only changing the min_width, may be a noop */ 4146 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 4147 if (phy_ctxt->width == def->width) 4148 goto out_unlock; 4149 4150 /* we are just toggling between 20_NOHT and 20 */ 4151 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 4152 def->width <= NL80211_CHAN_WIDTH_20) 4153 goto out_unlock; 4154 } 4155 4156 iwl_mvm_bt_coex_vif_change(mvm); 4157 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4158 ctx->rx_chains_static, 4159 ctx->rx_chains_dynamic); 4160 4161 out_unlock: 4162 mutex_unlock(&mvm->mutex); 4163 } 4164 4165 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 4166 struct ieee80211_vif *vif, 4167 struct ieee80211_chanctx_conf *ctx, 4168 bool switching_chanctx) 4169 { 4170 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4171 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4172 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4173 int ret; 4174 4175 lockdep_assert_held(&mvm->mutex); 4176 4177 mvmvif->phy_ctxt = phy_ctxt; 4178 4179 switch (vif->type) { 4180 case NL80211_IFTYPE_AP: 4181 /* only needed if we're switching chanctx (i.e. during CSA) */ 4182 if (switching_chanctx) { 4183 mvmvif->ap_ibss_active = true; 4184 break; 4185 } 4186 /* fall through */ 4187 case NL80211_IFTYPE_ADHOC: 4188 /* 4189 * The AP binding flow is handled as part of the start_ap flow 4190 * (in bss_info_changed), similarly for IBSS. 4191 */ 4192 ret = 0; 4193 goto out; 4194 case NL80211_IFTYPE_STATION: 4195 mvmvif->csa_bcn_pending = false; 4196 break; 4197 case NL80211_IFTYPE_MONITOR: 4198 /* always disable PS when a monitor interface is active */ 4199 mvmvif->ps_disabled = true; 4200 break; 4201 default: 4202 ret = -EINVAL; 4203 goto out; 4204 } 4205 4206 ret = iwl_mvm_binding_add_vif(mvm, vif); 4207 if (ret) 4208 goto out; 4209 4210 /* 4211 * Power state must be updated before quotas, 4212 * otherwise fw will complain. 4213 */ 4214 iwl_mvm_power_update_mac(mvm); 4215 4216 /* Setting the quota at this stage is only required for monitor 4217 * interfaces. For the other types, the bss_info changed flow 4218 * will handle quota settings. 4219 */ 4220 if (vif->type == NL80211_IFTYPE_MONITOR) { 4221 mvmvif->monitor_active = true; 4222 ret = iwl_mvm_update_quotas(mvm, false, NULL); 4223 if (ret) 4224 goto out_remove_binding; 4225 4226 ret = iwl_mvm_add_snif_sta(mvm, vif); 4227 if (ret) 4228 goto out_remove_binding; 4229 4230 } 4231 4232 /* Handle binding during CSA */ 4233 if (vif->type == NL80211_IFTYPE_AP) { 4234 iwl_mvm_update_quotas(mvm, false, NULL); 4235 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4236 } 4237 4238 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 4239 mvmvif->csa_bcn_pending = true; 4240 4241 if (!fw_has_capa(&mvm->fw->ucode_capa, 4242 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4243 u32 duration = 3 * vif->bss_conf.beacon_int; 4244 4245 4246 /* iwl_mvm_protect_session() reads directly from the 4247 * device (the system time), so make sure it is 4248 * available. 4249 */ 4250 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 4251 if (ret) 4252 goto out_remove_binding; 4253 4254 /* Protect the session to make sure we hear the first 4255 * beacon on the new channel. 4256 */ 4257 iwl_mvm_protect_session(mvm, vif, duration, duration, 4258 vif->bss_conf.beacon_int / 2, 4259 true); 4260 4261 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 4262 } 4263 4264 iwl_mvm_update_quotas(mvm, false, NULL); 4265 } 4266 4267 goto out; 4268 4269 out_remove_binding: 4270 iwl_mvm_binding_remove_vif(mvm, vif); 4271 iwl_mvm_power_update_mac(mvm); 4272 out: 4273 if (ret) 4274 mvmvif->phy_ctxt = NULL; 4275 return ret; 4276 } 4277 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 4278 struct ieee80211_vif *vif, 4279 struct ieee80211_chanctx_conf *ctx) 4280 { 4281 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4282 int ret; 4283 4284 mutex_lock(&mvm->mutex); 4285 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 4286 mutex_unlock(&mvm->mutex); 4287 4288 return ret; 4289 } 4290 4291 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 4292 struct ieee80211_vif *vif, 4293 struct ieee80211_chanctx_conf *ctx, 4294 bool switching_chanctx) 4295 { 4296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4297 struct ieee80211_vif *disabled_vif = NULL; 4298 4299 lockdep_assert_held(&mvm->mutex); 4300 4301 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 4302 4303 switch (vif->type) { 4304 case NL80211_IFTYPE_ADHOC: 4305 goto out; 4306 case NL80211_IFTYPE_MONITOR: 4307 mvmvif->monitor_active = false; 4308 mvmvif->ps_disabled = false; 4309 iwl_mvm_rm_snif_sta(mvm, vif); 4310 break; 4311 case NL80211_IFTYPE_AP: 4312 /* This part is triggered only during CSA */ 4313 if (!switching_chanctx || !mvmvif->ap_ibss_active) 4314 goto out; 4315 4316 mvmvif->csa_countdown = false; 4317 4318 /* Set CS bit on all the stations */ 4319 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 4320 4321 /* Save blocked iface, the timeout is set on the next beacon */ 4322 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 4323 4324 mvmvif->ap_ibss_active = false; 4325 break; 4326 case NL80211_IFTYPE_STATION: 4327 if (!switching_chanctx) 4328 break; 4329 4330 disabled_vif = vif; 4331 4332 if (!fw_has_capa(&mvm->fw->ucode_capa, 4333 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4334 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 4335 break; 4336 default: 4337 break; 4338 } 4339 4340 iwl_mvm_update_quotas(mvm, false, disabled_vif); 4341 iwl_mvm_binding_remove_vif(mvm, vif); 4342 4343 out: 4344 mvmvif->phy_ctxt = NULL; 4345 iwl_mvm_power_update_mac(mvm); 4346 } 4347 4348 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 4349 struct ieee80211_vif *vif, 4350 struct ieee80211_chanctx_conf *ctx) 4351 { 4352 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4353 4354 mutex_lock(&mvm->mutex); 4355 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 4356 mutex_unlock(&mvm->mutex); 4357 } 4358 4359 static int 4360 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 4361 struct ieee80211_vif_chanctx_switch *vifs) 4362 { 4363 int ret; 4364 4365 mutex_lock(&mvm->mutex); 4366 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4367 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 4368 4369 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 4370 if (ret) { 4371 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 4372 goto out_reassign; 4373 } 4374 4375 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4376 true); 4377 if (ret) { 4378 IWL_ERR(mvm, 4379 "failed to assign new_ctx during channel switch\n"); 4380 goto out_remove; 4381 } 4382 4383 /* we don't support TDLS during DCM - can be caused by channel switch */ 4384 if (iwl_mvm_phy_ctx_count(mvm) > 1) 4385 iwl_mvm_teardown_tdls_peers(mvm); 4386 4387 goto out; 4388 4389 out_remove: 4390 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 4391 4392 out_reassign: 4393 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4394 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4395 goto out_restart; 4396 } 4397 4398 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4399 true)) { 4400 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4401 goto out_restart; 4402 } 4403 4404 goto out; 4405 4406 out_restart: 4407 /* things keep failing, better restart the hw */ 4408 iwl_mvm_nic_restart(mvm, false); 4409 4410 out: 4411 mutex_unlock(&mvm->mutex); 4412 4413 return ret; 4414 } 4415 4416 static int 4417 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4418 struct ieee80211_vif_chanctx_switch *vifs) 4419 { 4420 int ret; 4421 4422 mutex_lock(&mvm->mutex); 4423 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4424 4425 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4426 true); 4427 if (ret) { 4428 IWL_ERR(mvm, 4429 "failed to assign new_ctx during channel switch\n"); 4430 goto out_reassign; 4431 } 4432 4433 goto out; 4434 4435 out_reassign: 4436 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4437 true)) { 4438 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4439 goto out_restart; 4440 } 4441 4442 goto out; 4443 4444 out_restart: 4445 /* things keep failing, better restart the hw */ 4446 iwl_mvm_nic_restart(mvm, false); 4447 4448 out: 4449 mutex_unlock(&mvm->mutex); 4450 4451 return ret; 4452 } 4453 4454 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4455 struct ieee80211_vif_chanctx_switch *vifs, 4456 int n_vifs, 4457 enum ieee80211_chanctx_switch_mode mode) 4458 { 4459 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4460 int ret; 4461 4462 /* we only support a single-vif right now */ 4463 if (n_vifs > 1) 4464 return -EOPNOTSUPP; 4465 4466 switch (mode) { 4467 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4468 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4469 break; 4470 case CHANCTX_SWMODE_REASSIGN_VIF: 4471 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4472 break; 4473 default: 4474 ret = -EOPNOTSUPP; 4475 break; 4476 } 4477 4478 return ret; 4479 } 4480 4481 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4482 { 4483 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4484 4485 return mvm->ibss_manager; 4486 } 4487 4488 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4489 struct ieee80211_sta *sta, 4490 bool set) 4491 { 4492 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4493 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4494 4495 if (!mvm_sta || !mvm_sta->vif) { 4496 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4497 return -EINVAL; 4498 } 4499 4500 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4501 } 4502 4503 #ifdef CONFIG_NL80211_TESTMODE 4504 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4505 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4506 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4507 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4508 }; 4509 4510 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4511 struct ieee80211_vif *vif, 4512 void *data, int len) 4513 { 4514 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4515 int err; 4516 u32 noa_duration; 4517 4518 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len, 4519 iwl_mvm_tm_policy, NULL); 4520 if (err) 4521 return err; 4522 4523 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4524 return -EINVAL; 4525 4526 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4527 case IWL_MVM_TM_CMD_SET_NOA: 4528 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4529 !vif->bss_conf.enable_beacon || 4530 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4531 return -EINVAL; 4532 4533 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4534 if (noa_duration >= vif->bss_conf.beacon_int) 4535 return -EINVAL; 4536 4537 mvm->noa_duration = noa_duration; 4538 mvm->noa_vif = vif; 4539 4540 return iwl_mvm_update_quotas(mvm, true, NULL); 4541 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4542 /* must be associated client vif - ignore authorized */ 4543 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4544 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4545 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4546 return -EINVAL; 4547 4548 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4549 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4550 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4551 } 4552 4553 return -EOPNOTSUPP; 4554 } 4555 4556 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4557 struct ieee80211_vif *vif, 4558 void *data, int len) 4559 { 4560 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4561 int err; 4562 4563 mutex_lock(&mvm->mutex); 4564 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4565 mutex_unlock(&mvm->mutex); 4566 4567 return err; 4568 } 4569 #endif 4570 4571 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4572 struct ieee80211_vif *vif, 4573 struct ieee80211_channel_switch *chsw) 4574 { 4575 /* By implementing this operation, we prevent mac80211 from 4576 * starting its own channel switch timer, so that we can call 4577 * ieee80211_chswitch_done() ourselves at the right time 4578 * (which is when the absence time event starts). 4579 */ 4580 4581 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4582 "dummy channel switch op\n"); 4583 } 4584 4585 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 4586 struct ieee80211_vif *vif, 4587 struct ieee80211_channel_switch *chsw) 4588 { 4589 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4590 struct iwl_chan_switch_te_cmd cmd = { 4591 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4592 mvmvif->color)), 4593 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 4594 .tsf = cpu_to_le32(chsw->timestamp), 4595 .cs_count = chsw->count, 4596 .cs_mode = chsw->block_tx, 4597 }; 4598 4599 lockdep_assert_held(&mvm->mutex); 4600 4601 if (chsw->delay) 4602 cmd.cs_delayed_bcn_count = 4603 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int); 4604 4605 return iwl_mvm_send_cmd_pdu(mvm, 4606 WIDE_ID(MAC_CONF_GROUP, 4607 CHANNEL_SWITCH_TIME_EVENT_CMD), 4608 0, sizeof(cmd), &cmd); 4609 } 4610 4611 #define IWL_MAX_CSA_BLOCK_TX 1500 4612 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4613 struct ieee80211_vif *vif, 4614 struct ieee80211_channel_switch *chsw) 4615 { 4616 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4617 struct ieee80211_vif *csa_vif; 4618 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4619 u32 apply_time; 4620 int ret; 4621 4622 mutex_lock(&mvm->mutex); 4623 4624 mvmvif->csa_failed = false; 4625 4626 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4627 chsw->chandef.center_freq1); 4628 4629 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4630 ieee80211_vif_to_wdev(vif), 4631 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4632 4633 switch (vif->type) { 4634 case NL80211_IFTYPE_AP: 4635 csa_vif = 4636 rcu_dereference_protected(mvm->csa_vif, 4637 lockdep_is_held(&mvm->mutex)); 4638 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4639 "Another CSA is already in progress")) { 4640 ret = -EBUSY; 4641 goto out_unlock; 4642 } 4643 4644 /* we still didn't unblock tx. prevent new CS meanwhile */ 4645 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4646 lockdep_is_held(&mvm->mutex))) { 4647 ret = -EBUSY; 4648 goto out_unlock; 4649 } 4650 4651 rcu_assign_pointer(mvm->csa_vif, vif); 4652 4653 if (WARN_ONCE(mvmvif->csa_countdown, 4654 "Previous CSA countdown didn't complete")) { 4655 ret = -EBUSY; 4656 goto out_unlock; 4657 } 4658 4659 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4660 4661 break; 4662 case NL80211_IFTYPE_STATION: 4663 /* Schedule the time event to a bit before beacon 1, 4664 * to make sure we're in the new channel when the 4665 * GO/AP arrives. In case count <= 1 immediately schedule the 4666 * TE (this might result with some packet loss or connection 4667 * loss). 4668 */ 4669 if (chsw->count <= 1) 4670 apply_time = 0; 4671 else 4672 apply_time = chsw->device_timestamp + 4673 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4674 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4675 4676 if (chsw->block_tx) { 4677 iwl_mvm_csa_client_absent(mvm, vif); 4678 /* 4679 * In case of undetermined / long time with immediate 4680 * quiet monitor status to gracefully disconnect 4681 */ 4682 if (!chsw->count || 4683 chsw->count * vif->bss_conf.beacon_int > 4684 IWL_MAX_CSA_BLOCK_TX) 4685 schedule_delayed_work(&mvmvif->csa_work, 4686 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); 4687 } 4688 4689 if (mvmvif->bf_data.bf_enabled) { 4690 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4691 if (ret) 4692 goto out_unlock; 4693 } 4694 4695 if (fw_has_capa(&mvm->fw->ucode_capa, 4696 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4697 iwl_mvm_schedule_client_csa(mvm, vif, chsw); 4698 else 4699 iwl_mvm_schedule_csa_period(mvm, vif, 4700 vif->bss_conf.beacon_int, 4701 apply_time); 4702 4703 mvmvif->csa_count = chsw->count; 4704 mvmvif->csa_misbehave = false; 4705 break; 4706 default: 4707 break; 4708 } 4709 4710 mvmvif->ps_disabled = true; 4711 4712 ret = iwl_mvm_power_update_ps(mvm); 4713 if (ret) 4714 goto out_unlock; 4715 4716 /* we won't be on this channel any longer */ 4717 iwl_mvm_teardown_tdls_peers(mvm); 4718 4719 out_unlock: 4720 mutex_unlock(&mvm->mutex); 4721 4722 return ret; 4723 } 4724 4725 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw, 4726 struct ieee80211_vif *vif, 4727 struct ieee80211_channel_switch *chsw) 4728 { 4729 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4730 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4731 struct iwl_chan_switch_te_cmd cmd = { 4732 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4733 mvmvif->color)), 4734 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY), 4735 .tsf = cpu_to_le32(chsw->timestamp), 4736 .cs_count = chsw->count, 4737 .cs_mode = chsw->block_tx, 4738 }; 4739 4740 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY)) 4741 return; 4742 4743 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) { 4744 if (mvmvif->csa_misbehave) { 4745 /* Second time, give up on this AP*/ 4746 iwl_mvm_abort_channel_switch(hw, vif); 4747 ieee80211_chswitch_done(vif, false); 4748 mvmvif->csa_misbehave = false; 4749 return; 4750 } 4751 mvmvif->csa_misbehave = true; 4752 } 4753 mvmvif->csa_count = chsw->count; 4754 4755 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id); 4756 4757 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 4758 WIDE_ID(MAC_CONF_GROUP, 4759 CHANNEL_SWITCH_TIME_EVENT_CMD), 4760 CMD_ASYNC, sizeof(cmd), &cmd)); 4761 } 4762 4763 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4764 { 4765 int i; 4766 4767 if (!iwl_mvm_has_new_tx_api(mvm)) { 4768 if (drop) { 4769 mutex_lock(&mvm->mutex); 4770 iwl_mvm_flush_tx_path(mvm, 4771 iwl_mvm_flushable_queues(mvm) & queues, 0); 4772 mutex_unlock(&mvm->mutex); 4773 } else { 4774 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4775 } 4776 return; 4777 } 4778 4779 mutex_lock(&mvm->mutex); 4780 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4781 struct ieee80211_sta *sta; 4782 4783 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4784 lockdep_is_held(&mvm->mutex)); 4785 if (IS_ERR_OR_NULL(sta)) 4786 continue; 4787 4788 if (drop) 4789 iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0); 4790 else 4791 iwl_mvm_wait_sta_queues_empty(mvm, 4792 iwl_mvm_sta_from_mac80211(sta)); 4793 } 4794 mutex_unlock(&mvm->mutex); 4795 } 4796 4797 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4798 struct ieee80211_vif *vif, u32 queues, bool drop) 4799 { 4800 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4801 struct iwl_mvm_vif *mvmvif; 4802 struct iwl_mvm_sta *mvmsta; 4803 struct ieee80211_sta *sta; 4804 int i; 4805 u32 msk = 0; 4806 4807 if (!vif) { 4808 iwl_mvm_flush_no_vif(mvm, queues, drop); 4809 return; 4810 } 4811 4812 if (vif->type != NL80211_IFTYPE_STATION) 4813 return; 4814 4815 /* Make sure we're done with the deferred traffic before flushing */ 4816 flush_work(&mvm->add_stream_wk); 4817 4818 mutex_lock(&mvm->mutex); 4819 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4820 4821 /* flush the AP-station and all TDLS peers */ 4822 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4823 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4824 lockdep_is_held(&mvm->mutex)); 4825 if (IS_ERR_OR_NULL(sta)) 4826 continue; 4827 4828 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4829 if (mvmsta->vif != vif) 4830 continue; 4831 4832 /* make sure only TDLS peers or the AP are flushed */ 4833 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4834 4835 if (drop) { 4836 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4837 IWL_ERR(mvm, "flush request fail\n"); 4838 } else { 4839 msk |= mvmsta->tfd_queue_msk; 4840 if (iwl_mvm_has_new_tx_api(mvm)) 4841 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4842 } 4843 } 4844 4845 mutex_unlock(&mvm->mutex); 4846 4847 /* this can take a while, and we may need/want other operations 4848 * to succeed while doing this, so do it without the mutex held 4849 */ 4850 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4851 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4852 } 4853 4854 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4855 struct survey_info *survey) 4856 { 4857 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4858 int ret; 4859 4860 memset(survey, 0, sizeof(*survey)); 4861 4862 /* only support global statistics right now */ 4863 if (idx != 0) 4864 return -ENOENT; 4865 4866 if (!fw_has_capa(&mvm->fw->ucode_capa, 4867 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4868 return -ENOENT; 4869 4870 mutex_lock(&mvm->mutex); 4871 4872 if (iwl_mvm_firmware_running(mvm)) { 4873 ret = iwl_mvm_request_statistics(mvm, false); 4874 if (ret) 4875 goto out; 4876 } 4877 4878 survey->filled = SURVEY_INFO_TIME | 4879 SURVEY_INFO_TIME_RX | 4880 SURVEY_INFO_TIME_TX | 4881 SURVEY_INFO_TIME_SCAN; 4882 survey->time = mvm->accu_radio_stats.on_time_rf + 4883 mvm->radio_stats.on_time_rf; 4884 do_div(survey->time, USEC_PER_MSEC); 4885 4886 survey->time_rx = mvm->accu_radio_stats.rx_time + 4887 mvm->radio_stats.rx_time; 4888 do_div(survey->time_rx, USEC_PER_MSEC); 4889 4890 survey->time_tx = mvm->accu_radio_stats.tx_time + 4891 mvm->radio_stats.tx_time; 4892 do_div(survey->time_tx, USEC_PER_MSEC); 4893 4894 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4895 mvm->radio_stats.on_time_scan; 4896 do_div(survey->time_scan, USEC_PER_MSEC); 4897 4898 ret = 0; 4899 out: 4900 mutex_unlock(&mvm->mutex); 4901 return ret; 4902 } 4903 4904 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4905 struct ieee80211_vif *vif, 4906 struct ieee80211_sta *sta, 4907 struct station_info *sinfo) 4908 { 4909 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4910 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4911 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4912 4913 if (mvmsta->avg_energy) { 4914 sinfo->signal_avg = mvmsta->avg_energy; 4915 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4916 } 4917 4918 /* if beacon filtering isn't on mac80211 does it anyway */ 4919 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4920 return; 4921 4922 if (!vif->bss_conf.assoc) 4923 return; 4924 4925 mutex_lock(&mvm->mutex); 4926 4927 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4928 goto unlock; 4929 4930 if (iwl_mvm_request_statistics(mvm, false)) 4931 goto unlock; 4932 4933 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4934 mvmvif->beacon_stats.accu_num_beacons; 4935 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4936 if (mvmvif->beacon_stats.avg_signal) { 4937 /* firmware only reports a value after RXing a few beacons */ 4938 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4939 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4940 } 4941 unlock: 4942 mutex_unlock(&mvm->mutex); 4943 } 4944 4945 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4946 struct ieee80211_vif *vif, 4947 const struct ieee80211_event *event) 4948 { 4949 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4950 do { \ 4951 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4952 break; \ 4953 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4954 } while (0) 4955 4956 struct iwl_fw_dbg_trigger_tlv *trig; 4957 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4958 4959 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4960 FW_DBG_TRIGGER_MLME); 4961 if (!trig) 4962 return; 4963 4964 trig_mlme = (void *)trig->data; 4965 4966 if (event->u.mlme.data == ASSOC_EVENT) { 4967 if (event->u.mlme.status == MLME_DENIED) 4968 CHECK_MLME_TRIGGER(stop_assoc_denied, 4969 "DENIED ASSOC: reason %d", 4970 event->u.mlme.reason); 4971 else if (event->u.mlme.status == MLME_TIMEOUT) 4972 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4973 "ASSOC TIMEOUT"); 4974 } else if (event->u.mlme.data == AUTH_EVENT) { 4975 if (event->u.mlme.status == MLME_DENIED) 4976 CHECK_MLME_TRIGGER(stop_auth_denied, 4977 "DENIED AUTH: reason %d", 4978 event->u.mlme.reason); 4979 else if (event->u.mlme.status == MLME_TIMEOUT) 4980 CHECK_MLME_TRIGGER(stop_auth_timeout, 4981 "AUTH TIMEOUT"); 4982 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4983 CHECK_MLME_TRIGGER(stop_rx_deauth, 4984 "DEAUTH RX %d", event->u.mlme.reason); 4985 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4986 CHECK_MLME_TRIGGER(stop_tx_deauth, 4987 "DEAUTH TX %d", event->u.mlme.reason); 4988 } 4989 #undef CHECK_MLME_TRIGGER 4990 } 4991 4992 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4993 struct ieee80211_vif *vif, 4994 const struct ieee80211_event *event) 4995 { 4996 struct iwl_fw_dbg_trigger_tlv *trig; 4997 struct iwl_fw_dbg_trigger_ba *ba_trig; 4998 4999 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5000 FW_DBG_TRIGGER_BA); 5001 if (!trig) 5002 return; 5003 5004 ba_trig = (void *)trig->data; 5005 5006 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 5007 return; 5008 5009 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 5010 "BAR received from %pM, tid %d, ssn %d", 5011 event->u.ba.sta->addr, event->u.ba.tid, 5012 event->u.ba.ssn); 5013 } 5014 5015 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 5016 struct ieee80211_vif *vif, 5017 const struct ieee80211_event *event) 5018 { 5019 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5020 5021 switch (event->type) { 5022 case MLME_EVENT: 5023 iwl_mvm_event_mlme_callback(mvm, vif, event); 5024 break; 5025 case BAR_RX_EVENT: 5026 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 5027 break; 5028 case BA_FRAME_TIMEOUT: 5029 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 5030 event->u.ba.tid); 5031 break; 5032 default: 5033 break; 5034 } 5035 } 5036 5037 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 5038 struct iwl_mvm_internal_rxq_notif *notif, 5039 u32 size) 5040 { 5041 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 5042 int ret; 5043 5044 lockdep_assert_held(&mvm->mutex); 5045 5046 if (!iwl_mvm_has_new_rx_api(mvm)) 5047 return; 5048 5049 notif->cookie = mvm->queue_sync_cookie; 5050 5051 if (notif->sync) 5052 atomic_set(&mvm->queue_sync_counter, 5053 mvm->trans->num_rx_queues); 5054 5055 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 5056 if (ret) { 5057 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 5058 goto out; 5059 } 5060 5061 if (notif->sync) { 5062 ret = wait_event_timeout(mvm->rx_sync_waitq, 5063 atomic_read(&mvm->queue_sync_counter) == 0 || 5064 iwl_mvm_is_radio_killed(mvm), 5065 HZ); 5066 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 5067 } 5068 5069 out: 5070 atomic_set(&mvm->queue_sync_counter, 0); 5071 mvm->queue_sync_cookie++; 5072 } 5073 5074 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 5075 { 5076 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5077 struct iwl_mvm_internal_rxq_notif data = { 5078 .type = IWL_MVM_RXQ_EMPTY, 5079 .sync = 1, 5080 }; 5081 5082 mutex_lock(&mvm->mutex); 5083 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 5084 mutex_unlock(&mvm->mutex); 5085 } 5086 5087 static int 5088 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw, 5089 struct ieee80211_vif *vif, 5090 struct cfg80211_ftm_responder_stats *stats) 5091 { 5092 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5093 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5094 5095 if (vif->p2p || vif->type != NL80211_IFTYPE_AP || 5096 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder) 5097 return -EINVAL; 5098 5099 mutex_lock(&mvm->mutex); 5100 *stats = mvm->ftm_resp_stats; 5101 mutex_unlock(&mvm->mutex); 5102 5103 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) | 5104 BIT(NL80211_FTM_STATS_PARTIAL_NUM) | 5105 BIT(NL80211_FTM_STATS_FAILED_NUM) | 5106 BIT(NL80211_FTM_STATS_ASAP_NUM) | 5107 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) | 5108 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) | 5109 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) | 5110 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) | 5111 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM); 5112 5113 return 0; 5114 } 5115 5116 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw, 5117 struct ieee80211_vif *vif, 5118 struct cfg80211_pmsr_request *request) 5119 { 5120 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5121 int ret; 5122 5123 mutex_lock(&mvm->mutex); 5124 ret = iwl_mvm_ftm_start(mvm, vif, request); 5125 mutex_unlock(&mvm->mutex); 5126 5127 return ret; 5128 } 5129 5130 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw, 5131 struct ieee80211_vif *vif, 5132 struct cfg80211_pmsr_request *request) 5133 { 5134 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5135 5136 mutex_lock(&mvm->mutex); 5137 iwl_mvm_ftm_abort(mvm, request); 5138 mutex_unlock(&mvm->mutex); 5139 } 5140 5141 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb) 5142 { 5143 u8 protocol = ip_hdr(skb)->protocol; 5144 5145 if (!IS_ENABLED(CONFIG_INET)) 5146 return false; 5147 5148 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 5149 } 5150 5151 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw, 5152 struct sk_buff *head, 5153 struct sk_buff *skb) 5154 { 5155 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5156 5157 /* For now don't aggregate IPv6 in AMSDU */ 5158 if (skb->protocol != htons(ETH_P_IP)) 5159 return false; 5160 5161 if (!iwl_mvm_is_csum_supported(mvm)) 5162 return true; 5163 5164 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head); 5165 } 5166 5167 const struct ieee80211_ops iwl_mvm_hw_ops = { 5168 .tx = iwl_mvm_mac_tx, 5169 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue, 5170 .ampdu_action = iwl_mvm_mac_ampdu_action, 5171 .start = iwl_mvm_mac_start, 5172 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 5173 .stop = iwl_mvm_mac_stop, 5174 .add_interface = iwl_mvm_mac_add_interface, 5175 .remove_interface = iwl_mvm_mac_remove_interface, 5176 .config = iwl_mvm_mac_config, 5177 .prepare_multicast = iwl_mvm_prepare_multicast, 5178 .configure_filter = iwl_mvm_configure_filter, 5179 .config_iface_filter = iwl_mvm_config_iface_filter, 5180 .bss_info_changed = iwl_mvm_bss_info_changed, 5181 .hw_scan = iwl_mvm_mac_hw_scan, 5182 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 5183 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 5184 .sta_state = iwl_mvm_mac_sta_state, 5185 .sta_notify = iwl_mvm_mac_sta_notify, 5186 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 5187 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 5188 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 5189 .sta_rc_update = iwl_mvm_sta_rc_update, 5190 .conf_tx = iwl_mvm_mac_conf_tx, 5191 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 5192 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 5193 .flush = iwl_mvm_mac_flush, 5194 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 5195 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 5196 .set_key = iwl_mvm_mac_set_key, 5197 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 5198 .remain_on_channel = iwl_mvm_roc, 5199 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 5200 .add_chanctx = iwl_mvm_add_chanctx, 5201 .remove_chanctx = iwl_mvm_remove_chanctx, 5202 .change_chanctx = iwl_mvm_change_chanctx, 5203 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 5204 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 5205 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 5206 5207 .start_ap = iwl_mvm_start_ap_ibss, 5208 .stop_ap = iwl_mvm_stop_ap_ibss, 5209 .join_ibss = iwl_mvm_start_ap_ibss, 5210 .leave_ibss = iwl_mvm_stop_ap_ibss, 5211 5212 .tx_last_beacon = iwl_mvm_tx_last_beacon, 5213 5214 .set_tim = iwl_mvm_set_tim, 5215 5216 .channel_switch = iwl_mvm_channel_switch, 5217 .pre_channel_switch = iwl_mvm_pre_channel_switch, 5218 .post_channel_switch = iwl_mvm_post_channel_switch, 5219 .abort_channel_switch = iwl_mvm_abort_channel_switch, 5220 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon, 5221 5222 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 5223 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 5224 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 5225 5226 .event_callback = iwl_mvm_mac_event_callback, 5227 5228 .sync_rx_queues = iwl_mvm_sync_rx_queues, 5229 5230 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 5231 5232 #ifdef CONFIG_PM_SLEEP 5233 /* look at d3.c */ 5234 .suspend = iwl_mvm_suspend, 5235 .resume = iwl_mvm_resume, 5236 .set_wakeup = iwl_mvm_set_wakeup, 5237 .set_rekey_data = iwl_mvm_set_rekey_data, 5238 #if IS_ENABLED(CONFIG_IPV6) 5239 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 5240 #endif 5241 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 5242 #endif 5243 .get_survey = iwl_mvm_mac_get_survey, 5244 .sta_statistics = iwl_mvm_mac_sta_statistics, 5245 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats, 5246 .start_pmsr = iwl_mvm_start_pmsr, 5247 .abort_pmsr = iwl_mvm_abort_pmsr, 5248 5249 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate, 5250 #ifdef CONFIG_IWLWIFI_DEBUGFS 5251 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 5252 #endif 5253 }; 5254