1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 25 * USA 26 * 27 * The full GNU General Public License is included in this distribution 28 * in the file called COPYING. 29 * 30 * Contact Information: 31 * Intel Linux Wireless <linuxwifi@intel.com> 32 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 33 * 34 * BSD LICENSE 35 * 36 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 37 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 38 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 39 * All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 45 * * Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * * Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in 49 * the documentation and/or other materials provided with the 50 * distribution. 51 * * Neither the name Intel Corporation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 56 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 57 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 58 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 59 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 60 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 61 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 65 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 * 67 *****************************************************************************/ 68 #include <linux/kernel.h> 69 #include <linux/slab.h> 70 #include <linux/skbuff.h> 71 #include <linux/netdevice.h> 72 #include <linux/etherdevice.h> 73 #include <linux/ip.h> 74 #include <linux/if_arp.h> 75 #include <linux/time.h> 76 #include <net/mac80211.h> 77 #include <net/ieee80211_radiotap.h> 78 #include <net/tcp.h> 79 80 #include "iwl-op-mode.h" 81 #include "iwl-io.h" 82 #include "mvm.h" 83 #include "sta.h" 84 #include "time-event.h" 85 #include "iwl-eeprom-parse.h" 86 #include "iwl-phy-db.h" 87 #include "testmode.h" 88 #include "fw/error-dump.h" 89 #include "iwl-prph.h" 90 #include "iwl-nvm-parse.h" 91 92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 93 { 94 .max = 1, 95 .types = BIT(NL80211_IFTYPE_STATION), 96 }, 97 { 98 .max = 1, 99 .types = BIT(NL80211_IFTYPE_AP) | 100 BIT(NL80211_IFTYPE_P2P_CLIENT) | 101 BIT(NL80211_IFTYPE_P2P_GO), 102 }, 103 { 104 .max = 1, 105 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 106 }, 107 }; 108 109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 110 { 111 .num_different_channels = 2, 112 .max_interfaces = 3, 113 .limits = iwl_mvm_limits, 114 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 115 }, 116 }; 117 118 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 119 /* 120 * Use the reserved field to indicate magic values. 121 * these values will only be used internally by the driver, 122 * and won't make it to the fw (reserved will be 0). 123 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 124 * be the vif's ip address. in case there is not a single 125 * ip address (0, or more than 1), this attribute will 126 * be skipped. 127 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 128 * the LSB bytes of the vif's mac address 129 */ 130 enum { 131 BC_FILTER_MAGIC_NONE = 0, 132 BC_FILTER_MAGIC_IP, 133 BC_FILTER_MAGIC_MAC, 134 }; 135 136 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 137 { 138 /* arp */ 139 .discard = 0, 140 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 141 .attrs = { 142 { 143 /* frame type - arp, hw type - ethernet */ 144 .offset_type = 145 BCAST_FILTER_OFFSET_PAYLOAD_START, 146 .offset = sizeof(rfc1042_header), 147 .val = cpu_to_be32(0x08060001), 148 .mask = cpu_to_be32(0xffffffff), 149 }, 150 { 151 /* arp dest ip */ 152 .offset_type = 153 BCAST_FILTER_OFFSET_PAYLOAD_START, 154 .offset = sizeof(rfc1042_header) + 2 + 155 sizeof(struct arphdr) + 156 ETH_ALEN + sizeof(__be32) + 157 ETH_ALEN, 158 .mask = cpu_to_be32(0xffffffff), 159 /* mark it as special field */ 160 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 161 }, 162 }, 163 }, 164 { 165 /* dhcp offer bcast */ 166 .discard = 0, 167 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 168 .attrs = { 169 { 170 /* udp dest port - 68 (bootp client)*/ 171 .offset_type = BCAST_FILTER_OFFSET_IP_END, 172 .offset = offsetof(struct udphdr, dest), 173 .val = cpu_to_be32(0x00440000), 174 .mask = cpu_to_be32(0xffff0000), 175 }, 176 { 177 /* dhcp - lsb bytes of client hw address */ 178 .offset_type = BCAST_FILTER_OFFSET_IP_END, 179 .offset = 38, 180 .mask = cpu_to_be32(0xffffffff), 181 /* mark it as special field */ 182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 183 }, 184 }, 185 }, 186 /* last filter must be empty */ 187 {}, 188 }; 189 #endif 190 191 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 192 { 193 if (!iwl_mvm_is_d0i3_supported(mvm)) 194 return; 195 196 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); 197 spin_lock_bh(&mvm->refs_lock); 198 mvm->refs[ref_type]++; 199 spin_unlock_bh(&mvm->refs_lock); 200 iwl_trans_ref(mvm->trans); 201 } 202 203 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 204 { 205 if (!iwl_mvm_is_d0i3_supported(mvm)) 206 return; 207 208 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); 209 spin_lock_bh(&mvm->refs_lock); 210 if (WARN_ON(!mvm->refs[ref_type])) { 211 spin_unlock_bh(&mvm->refs_lock); 212 return; 213 } 214 mvm->refs[ref_type]--; 215 spin_unlock_bh(&mvm->refs_lock); 216 iwl_trans_unref(mvm->trans); 217 } 218 219 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, 220 enum iwl_mvm_ref_type except_ref) 221 { 222 int i, j; 223 224 if (!iwl_mvm_is_d0i3_supported(mvm)) 225 return; 226 227 spin_lock_bh(&mvm->refs_lock); 228 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 229 if (except_ref == i || !mvm->refs[i]) 230 continue; 231 232 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", 233 i, mvm->refs[i]); 234 for (j = 0; j < mvm->refs[i]; j++) 235 iwl_trans_unref(mvm->trans); 236 mvm->refs[i] = 0; 237 } 238 spin_unlock_bh(&mvm->refs_lock); 239 } 240 241 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) 242 { 243 int i; 244 bool taken = false; 245 246 if (!iwl_mvm_is_d0i3_supported(mvm)) 247 return true; 248 249 spin_lock_bh(&mvm->refs_lock); 250 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 251 if (mvm->refs[i]) { 252 taken = true; 253 break; 254 } 255 } 256 spin_unlock_bh(&mvm->refs_lock); 257 258 return taken; 259 } 260 261 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 262 { 263 iwl_mvm_ref(mvm, ref_type); 264 265 if (!wait_event_timeout(mvm->d0i3_exit_waitq, 266 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), 267 HZ)) { 268 WARN_ON_ONCE(1); 269 iwl_mvm_unref(mvm, ref_type); 270 return -EIO; 271 } 272 273 return 0; 274 } 275 276 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 277 { 278 int i; 279 280 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 281 for (i = 0; i < NUM_PHY_CTX; i++) { 282 mvm->phy_ctxts[i].id = i; 283 mvm->phy_ctxts[i].ref = 0; 284 } 285 } 286 287 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 288 const char *alpha2, 289 enum iwl_mcc_source src_id, 290 bool *changed) 291 { 292 struct ieee80211_regdomain *regd = NULL; 293 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 294 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 295 struct iwl_mcc_update_resp *resp; 296 297 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 298 299 lockdep_assert_held(&mvm->mutex); 300 301 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 302 if (IS_ERR_OR_NULL(resp)) { 303 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 304 PTR_ERR_OR_ZERO(resp)); 305 goto out; 306 } 307 308 if (changed) 309 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE); 310 311 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 312 __le32_to_cpu(resp->n_channels), 313 resp->channels, 314 __le16_to_cpu(resp->mcc), 315 __le16_to_cpu(resp->geo_info)); 316 /* Store the return source id */ 317 src_id = resp->source_id; 318 kfree(resp); 319 if (IS_ERR_OR_NULL(regd)) { 320 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 321 PTR_ERR_OR_ZERO(regd)); 322 goto out; 323 } 324 325 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 326 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 327 mvm->lar_regdom_set = true; 328 mvm->mcc_src = src_id; 329 330 out: 331 return regd; 332 } 333 334 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 335 { 336 bool changed; 337 struct ieee80211_regdomain *regd; 338 339 if (!iwl_mvm_is_lar_supported(mvm)) 340 return; 341 342 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 343 if (!IS_ERR_OR_NULL(regd)) { 344 /* only update the regulatory core if changed */ 345 if (changed) 346 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 347 348 kfree(regd); 349 } 350 } 351 352 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 353 bool *changed) 354 { 355 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 356 iwl_mvm_is_wifi_mcc_supported(mvm) ? 357 MCC_SOURCE_GET_CURRENT : 358 MCC_SOURCE_OLD_FW, changed); 359 } 360 361 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 362 { 363 enum iwl_mcc_source used_src; 364 struct ieee80211_regdomain *regd; 365 int ret; 366 bool changed; 367 const struct ieee80211_regdomain *r = 368 rtnl_dereference(mvm->hw->wiphy->regd); 369 370 if (!r) 371 return -ENOENT; 372 373 /* save the last source in case we overwrite it below */ 374 used_src = mvm->mcc_src; 375 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 376 /* Notify the firmware we support wifi location updates */ 377 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 378 if (!IS_ERR_OR_NULL(regd)) 379 kfree(regd); 380 } 381 382 /* Now set our last stored MCC and source */ 383 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 384 &changed); 385 if (IS_ERR_OR_NULL(regd)) 386 return -EIO; 387 388 /* update cfg80211 if the regdomain was changed */ 389 if (changed) 390 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 391 else 392 ret = 0; 393 394 kfree(regd); 395 return ret; 396 } 397 398 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 399 { 400 struct ieee80211_hw *hw = mvm->hw; 401 int num_mac, ret, i; 402 static const u32 mvm_ciphers[] = { 403 WLAN_CIPHER_SUITE_WEP40, 404 WLAN_CIPHER_SUITE_WEP104, 405 WLAN_CIPHER_SUITE_TKIP, 406 WLAN_CIPHER_SUITE_CCMP, 407 }; 408 409 /* Tell mac80211 our characteristics */ 410 ieee80211_hw_set(hw, SIGNAL_DBM); 411 ieee80211_hw_set(hw, SPECTRUM_MGMT); 412 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 413 ieee80211_hw_set(hw, QUEUE_CONTROL); 414 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 415 ieee80211_hw_set(hw, SUPPORTS_PS); 416 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 417 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 418 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 419 ieee80211_hw_set(hw, CONNECTION_MONITOR); 420 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 421 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 422 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 423 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 424 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 425 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 426 427 if (iwl_mvm_has_tlc_offload(mvm)) { 428 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 429 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 430 } 431 432 if (iwl_mvm_has_new_rx_api(mvm)) 433 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 434 435 if (fw_has_capa(&mvm->fw->ucode_capa, 436 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 437 ieee80211_hw_set(hw, AP_LINK_PS); 438 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 439 /* 440 * we absolutely need this for the new TX API since that comes 441 * with many more queues than the current code can deal with 442 * for station powersave 443 */ 444 return -EINVAL; 445 } 446 447 if (mvm->trans->num_rx_queues > 1) 448 ieee80211_hw_set(hw, USES_RSS); 449 450 if (mvm->trans->max_skb_frags) 451 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 452 453 hw->queues = IEEE80211_MAX_QUEUES; 454 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 455 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 456 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 457 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 458 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 459 460 hw->radiotap_timestamp.units_pos = 461 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 462 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 463 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 464 hw->radiotap_timestamp.accuracy = 22; 465 466 if (!iwl_mvm_has_tlc_offload(mvm)) 467 hw->rate_control_algorithm = RS_NAME; 468 469 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 470 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 471 472 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 473 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 474 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 475 hw->wiphy->cipher_suites = mvm->ciphers; 476 477 if (iwl_mvm_has_new_rx_api(mvm)) { 478 mvm->ciphers[hw->wiphy->n_cipher_suites] = 479 WLAN_CIPHER_SUITE_GCMP; 480 hw->wiphy->n_cipher_suites++; 481 mvm->ciphers[hw->wiphy->n_cipher_suites] = 482 WLAN_CIPHER_SUITE_GCMP_256; 483 hw->wiphy->n_cipher_suites++; 484 } 485 486 /* Enable 11w if software crypto is not enabled (as the 487 * firmware will interpret some mgmt packets, so enabling it 488 * with software crypto isn't safe). 489 */ 490 if (!iwlwifi_mod_params.swcrypto) { 491 ieee80211_hw_set(hw, MFP_CAPABLE); 492 mvm->ciphers[hw->wiphy->n_cipher_suites] = 493 WLAN_CIPHER_SUITE_AES_CMAC; 494 hw->wiphy->n_cipher_suites++; 495 if (iwl_mvm_has_new_rx_api(mvm)) { 496 mvm->ciphers[hw->wiphy->n_cipher_suites] = 497 WLAN_CIPHER_SUITE_BIP_GMAC_128; 498 hw->wiphy->n_cipher_suites++; 499 mvm->ciphers[hw->wiphy->n_cipher_suites] = 500 WLAN_CIPHER_SUITE_BIP_GMAC_256; 501 hw->wiphy->n_cipher_suites++; 502 } 503 } 504 505 /* currently FW API supports only one optional cipher scheme */ 506 if (mvm->fw->cs[0].cipher) { 507 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 508 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 509 510 mvm->hw->n_cipher_schemes = 1; 511 512 cs->cipher = le32_to_cpu(fwcs->cipher); 513 cs->iftype = BIT(NL80211_IFTYPE_STATION); 514 cs->hdr_len = fwcs->hdr_len; 515 cs->pn_len = fwcs->pn_len; 516 cs->pn_off = fwcs->pn_off; 517 cs->key_idx_off = fwcs->key_idx_off; 518 cs->key_idx_mask = fwcs->key_idx_mask; 519 cs->key_idx_shift = fwcs->key_idx_shift; 520 cs->mic_len = fwcs->mic_len; 521 522 mvm->hw->cipher_schemes = mvm->cs; 523 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 524 hw->wiphy->n_cipher_suites++; 525 } 526 527 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 528 hw->wiphy->features |= 529 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 530 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 531 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 532 533 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 534 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 535 hw->chanctx_data_size = sizeof(u16); 536 537 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 538 BIT(NL80211_IFTYPE_P2P_CLIENT) | 539 BIT(NL80211_IFTYPE_AP) | 540 BIT(NL80211_IFTYPE_P2P_GO) | 541 BIT(NL80211_IFTYPE_P2P_DEVICE) | 542 BIT(NL80211_IFTYPE_ADHOC); 543 544 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 545 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 546 if (iwl_mvm_is_lar_supported(mvm)) 547 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 548 else 549 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 550 REGULATORY_DISABLE_BEACON_HINTS; 551 552 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 553 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 554 555 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 556 hw->wiphy->n_iface_combinations = 557 ARRAY_SIZE(iwl_mvm_iface_combinations); 558 559 hw->wiphy->max_remain_on_channel_duration = 10000; 560 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 561 /* we can compensate an offset of up to 3 channels = 15 MHz */ 562 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5; 563 564 /* Extract MAC address */ 565 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 566 hw->wiphy->addresses = mvm->addresses; 567 hw->wiphy->n_addresses = 1; 568 569 /* Extract additional MAC addresses if available */ 570 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 571 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 572 573 for (i = 1; i < num_mac; i++) { 574 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 575 ETH_ALEN); 576 mvm->addresses[i].addr[5]++; 577 hw->wiphy->n_addresses++; 578 } 579 580 iwl_mvm_reset_phy_ctxts(mvm); 581 582 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 583 584 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 585 586 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 587 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 588 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 589 590 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 591 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 592 else 593 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 594 595 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 596 hw->wiphy->bands[NL80211_BAND_2GHZ] = 597 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 598 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 599 hw->wiphy->bands[NL80211_BAND_5GHZ] = 600 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 601 602 if (fw_has_capa(&mvm->fw->ucode_capa, 603 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 604 fw_has_api(&mvm->fw->ucode_capa, 605 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 606 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 607 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 608 } 609 610 hw->wiphy->hw_version = mvm->trans->hw_id; 611 612 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 613 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 614 else 615 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 616 617 hw->wiphy->max_sched_scan_reqs = 1; 618 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 619 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 620 /* we create the 802.11 header and zero length SSID IE. */ 621 hw->wiphy->max_sched_scan_ie_len = 622 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 623 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 624 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 625 626 /* 627 * the firmware uses u8 for num of iterations, but 0xff is saved for 628 * infinite loop, so the maximum number of iterations is actually 254. 629 */ 630 hw->wiphy->max_sched_scan_plan_iterations = 254; 631 632 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 633 NL80211_FEATURE_LOW_PRIORITY_SCAN | 634 NL80211_FEATURE_P2P_GO_OPPPS | 635 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 636 NL80211_FEATURE_DYNAMIC_SMPS | 637 NL80211_FEATURE_STATIC_SMPS | 638 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 639 640 if (fw_has_capa(&mvm->fw->ucode_capa, 641 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 642 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 643 if (fw_has_capa(&mvm->fw->ucode_capa, 644 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 645 hw->wiphy->features |= NL80211_FEATURE_QUIET; 646 647 if (fw_has_capa(&mvm->fw->ucode_capa, 648 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 649 hw->wiphy->features |= 650 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 651 652 if (fw_has_capa(&mvm->fw->ucode_capa, 653 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 654 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 655 656 if (fw_has_api(&mvm->fw->ucode_capa, 657 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 658 wiphy_ext_feature_set(hw->wiphy, 659 NL80211_EXT_FEATURE_SCAN_START_TIME); 660 wiphy_ext_feature_set(hw->wiphy, 661 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 662 wiphy_ext_feature_set(hw->wiphy, 663 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 664 } 665 666 if (iwl_mvm_is_oce_supported(mvm)) { 667 wiphy_ext_feature_set(hw->wiphy, 668 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 669 wiphy_ext_feature_set(hw->wiphy, 670 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 671 wiphy_ext_feature_set(hw->wiphy, 672 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 673 wiphy_ext_feature_set(hw->wiphy, 674 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 675 } 676 677 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 678 679 #ifdef CONFIG_PM_SLEEP 680 if (iwl_mvm_is_d0i3_supported(mvm) && 681 device_can_wakeup(mvm->trans->dev)) { 682 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 683 hw->wiphy->wowlan = &mvm->wowlan; 684 } 685 686 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec && 687 mvm->trans->ops->d3_suspend && 688 mvm->trans->ops->d3_resume && 689 device_can_wakeup(mvm->trans->dev)) { 690 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 691 WIPHY_WOWLAN_DISCONNECT | 692 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 693 WIPHY_WOWLAN_RFKILL_RELEASE | 694 WIPHY_WOWLAN_NET_DETECT; 695 if (!iwlwifi_mod_params.swcrypto) 696 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 697 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 698 WIPHY_WOWLAN_4WAY_HANDSHAKE; 699 700 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 701 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 702 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 703 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 704 hw->wiphy->wowlan = &mvm->wowlan; 705 } 706 #endif 707 708 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 709 /* assign default bcast filtering configuration */ 710 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 711 #endif 712 713 ret = iwl_mvm_leds_init(mvm); 714 if (ret) 715 return ret; 716 717 if (fw_has_capa(&mvm->fw->ucode_capa, 718 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 719 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 720 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 721 ieee80211_hw_set(hw, TDLS_WIDER_BW); 722 } 723 724 if (fw_has_capa(&mvm->fw->ucode_capa, 725 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 726 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 727 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 728 } 729 730 hw->netdev_features |= mvm->cfg->features; 731 if (!iwl_mvm_is_csum_supported(mvm)) { 732 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 733 NETIF_F_RXCSUM); 734 /* We may support SW TX CSUM */ 735 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 736 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 737 } 738 739 ret = ieee80211_register_hw(mvm->hw); 740 if (ret) 741 iwl_mvm_leds_exit(mvm); 742 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 743 744 if (mvm->cfg->vht_mu_mimo_supported) 745 wiphy_ext_feature_set(hw->wiphy, 746 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 747 748 return ret; 749 } 750 751 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 752 struct ieee80211_sta *sta, 753 struct sk_buff *skb) 754 { 755 struct iwl_mvm_sta *mvmsta; 756 bool defer = false; 757 758 /* 759 * double check the IN_D0I3 flag both before and after 760 * taking the spinlock, in order to prevent taking 761 * the spinlock when not needed. 762 */ 763 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 764 return false; 765 766 spin_lock(&mvm->d0i3_tx_lock); 767 /* 768 * testing the flag again ensures the skb dequeue 769 * loop (on d0i3 exit) hasn't run yet. 770 */ 771 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 772 goto out; 773 774 mvmsta = iwl_mvm_sta_from_mac80211(sta); 775 if (mvmsta->sta_id == IWL_MVM_INVALID_STA || 776 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 777 goto out; 778 779 __skb_queue_tail(&mvm->d0i3_tx, skb); 780 ieee80211_stop_queues(mvm->hw); 781 782 /* trigger wakeup */ 783 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 784 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 785 786 defer = true; 787 out: 788 spin_unlock(&mvm->d0i3_tx_lock); 789 return defer; 790 } 791 792 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 793 struct ieee80211_tx_control *control, 794 struct sk_buff *skb) 795 { 796 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 797 struct ieee80211_sta *sta = control->sta; 798 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 799 struct ieee80211_hdr *hdr = (void *)skb->data; 800 801 if (iwl_mvm_is_radio_killed(mvm)) { 802 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 803 goto drop; 804 } 805 806 if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && 807 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 808 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 809 goto drop; 810 811 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 812 if ((info->control.vif->type == NL80211_IFTYPE_AP || 813 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 814 ieee80211_is_mgmt(hdr->frame_control) && 815 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 816 sta = NULL; 817 818 if (sta) { 819 if (iwl_mvm_defer_tx(mvm, sta, skb)) 820 return; 821 if (iwl_mvm_tx_skb(mvm, skb, sta)) 822 goto drop; 823 return; 824 } 825 826 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 827 goto drop; 828 return; 829 drop: 830 ieee80211_free_txskb(hw, skb); 831 } 832 833 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) 834 { 835 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) 836 return false; 837 return true; 838 } 839 840 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) 841 { 842 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) 843 return false; 844 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) 845 return true; 846 847 /* enabled by default */ 848 return true; 849 } 850 851 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 852 do { \ 853 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 854 break; \ 855 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 856 } while (0) 857 858 static void 859 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 860 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 861 enum ieee80211_ampdu_mlme_action action) 862 { 863 struct iwl_fw_dbg_trigger_tlv *trig; 864 struct iwl_fw_dbg_trigger_ba *ba_trig; 865 866 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 867 return; 868 869 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 870 ba_trig = (void *)trig->data; 871 872 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 873 ieee80211_vif_to_wdev(vif), trig)) 874 return; 875 876 switch (action) { 877 case IEEE80211_AMPDU_TX_OPERATIONAL: { 878 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 879 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 880 881 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 882 "TX AGG START: MAC %pM tid %d ssn %d\n", 883 sta->addr, tid, tid_data->ssn); 884 break; 885 } 886 case IEEE80211_AMPDU_TX_STOP_CONT: 887 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 888 "TX AGG STOP: MAC %pM tid %d\n", 889 sta->addr, tid); 890 break; 891 case IEEE80211_AMPDU_RX_START: 892 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 893 "RX AGG START: MAC %pM tid %d ssn %d\n", 894 sta->addr, tid, rx_ba_ssn); 895 break; 896 case IEEE80211_AMPDU_RX_STOP: 897 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 898 "RX AGG STOP: MAC %pM tid %d\n", 899 sta->addr, tid); 900 break; 901 default: 902 break; 903 } 904 } 905 906 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 907 struct ieee80211_vif *vif, 908 struct ieee80211_ampdu_params *params) 909 { 910 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 911 int ret; 912 bool tx_agg_ref = false; 913 struct ieee80211_sta *sta = params->sta; 914 enum ieee80211_ampdu_mlme_action action = params->action; 915 u16 tid = params->tid; 916 u16 *ssn = ¶ms->ssn; 917 u8 buf_size = params->buf_size; 918 bool amsdu = params->amsdu; 919 u16 timeout = params->timeout; 920 921 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 922 sta->addr, tid, action); 923 924 if (!(mvm->nvm_data->sku_cap_11n_enable)) 925 return -EACCES; 926 927 /* return from D0i3 before starting a new Tx aggregation */ 928 switch (action) { 929 case IEEE80211_AMPDU_TX_START: 930 case IEEE80211_AMPDU_TX_STOP_CONT: 931 case IEEE80211_AMPDU_TX_STOP_FLUSH: 932 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 933 case IEEE80211_AMPDU_TX_OPERATIONAL: 934 /* 935 * for tx start, wait synchronously until D0i3 exit to 936 * get the correct sequence number for the tid. 937 * additionally, some other ampdu actions use direct 938 * target access, which is not handled automatically 939 * by the trans layer (unlike commands), so wait for 940 * d0i3 exit in these cases as well. 941 */ 942 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 943 if (ret) 944 return ret; 945 946 tx_agg_ref = true; 947 break; 948 default: 949 break; 950 } 951 952 mutex_lock(&mvm->mutex); 953 954 switch (action) { 955 case IEEE80211_AMPDU_RX_START: 956 if (!iwl_enable_rx_ampdu(mvm->cfg)) { 957 ret = -EINVAL; 958 break; 959 } 960 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 961 timeout); 962 break; 963 case IEEE80211_AMPDU_RX_STOP: 964 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 965 timeout); 966 break; 967 case IEEE80211_AMPDU_TX_START: 968 if (!iwl_enable_tx_ampdu(mvm->cfg)) { 969 ret = -EINVAL; 970 break; 971 } 972 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 973 break; 974 case IEEE80211_AMPDU_TX_STOP_CONT: 975 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 976 break; 977 case IEEE80211_AMPDU_TX_STOP_FLUSH: 978 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 979 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 980 break; 981 case IEEE80211_AMPDU_TX_OPERATIONAL: 982 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 983 buf_size, amsdu); 984 break; 985 default: 986 WARN_ON_ONCE(1); 987 ret = -EINVAL; 988 break; 989 } 990 991 if (!ret) { 992 u16 rx_ba_ssn = 0; 993 994 if (action == IEEE80211_AMPDU_RX_START) 995 rx_ba_ssn = *ssn; 996 997 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 998 rx_ba_ssn, action); 999 } 1000 mutex_unlock(&mvm->mutex); 1001 1002 /* 1003 * If the tid is marked as started, we won't use it for offloaded 1004 * traffic on the next D0i3 entry. It's safe to unref. 1005 */ 1006 if (tx_agg_ref) 1007 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 1008 1009 return ret; 1010 } 1011 1012 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1013 struct ieee80211_vif *vif) 1014 { 1015 struct iwl_mvm *mvm = data; 1016 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1017 1018 mvmvif->uploaded = false; 1019 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1020 1021 spin_lock_bh(&mvm->time_event_lock); 1022 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1023 spin_unlock_bh(&mvm->time_event_lock); 1024 1025 mvmvif->phy_ctxt = NULL; 1026 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1027 } 1028 1029 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1030 { 1031 /* clear the D3 reconfig, we only need it to avoid dumping a 1032 * firmware coredump on reconfiguration, we shouldn't do that 1033 * on D3->D0 transition 1034 */ 1035 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) { 1036 mvm->fwrt.dump.desc = &iwl_dump_desc_assert; 1037 iwl_fw_error_dump(&mvm->fwrt); 1038 } 1039 1040 /* cleanup all stale references (scan, roc), but keep the 1041 * ucode_down ref until reconfig is complete 1042 */ 1043 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 1044 1045 iwl_mvm_stop_device(mvm); 1046 1047 mvm->scan_status = 0; 1048 mvm->ps_disabled = false; 1049 mvm->calibrating = false; 1050 1051 /* just in case one was running */ 1052 iwl_mvm_cleanup_roc_te(mvm); 1053 ieee80211_remain_on_channel_expired(mvm->hw); 1054 1055 /* 1056 * cleanup all interfaces, even inactive ones, as some might have 1057 * gone down during the HW restart 1058 */ 1059 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1060 1061 mvm->p2p_device_vif = NULL; 1062 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1063 1064 iwl_mvm_reset_phy_ctxts(mvm); 1065 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1066 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames)); 1067 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1068 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1069 1070 ieee80211_wake_queues(mvm->hw); 1071 1072 /* clear any stale d0i3 state */ 1073 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1074 1075 mvm->vif_count = 0; 1076 mvm->rx_ba_sessions = 0; 1077 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1078 mvm->monitor_on = false; 1079 1080 /* keep statistics ticking */ 1081 iwl_mvm_accu_radio_stats(mvm); 1082 } 1083 1084 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1085 { 1086 int ret; 1087 1088 lockdep_assert_held(&mvm->mutex); 1089 1090 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1091 /* 1092 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1093 * so later code will - from now on - see that we're doing it. 1094 */ 1095 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1096 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1097 /* Clean up some internal and mac80211 state on restart */ 1098 iwl_mvm_restart_cleanup(mvm); 1099 } else { 1100 /* Hold the reference to prevent runtime suspend while 1101 * the start procedure runs. It's a bit confusing 1102 * that the UCODE_DOWN reference is taken, but it just 1103 * means "UCODE is not UP yet". ( TODO: rename this 1104 * reference). 1105 */ 1106 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1107 } 1108 ret = iwl_mvm_up(mvm); 1109 1110 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1111 /* Something went wrong - we need to finish some cleanup 1112 * that normally iwl_mvm_mac_restart_complete() below 1113 * would do. 1114 */ 1115 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1116 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1117 } 1118 1119 return ret; 1120 } 1121 1122 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1123 { 1124 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1125 int ret; 1126 1127 /* Some hw restart cleanups must not hold the mutex */ 1128 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1129 /* 1130 * Make sure we are out of d0i3. This is needed 1131 * to make sure the reference accounting is correct 1132 * (and there is no stale d0i3_exit_work). 1133 */ 1134 wait_event_timeout(mvm->d0i3_exit_waitq, 1135 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1136 &mvm->status), 1137 HZ); 1138 } 1139 1140 mutex_lock(&mvm->mutex); 1141 ret = __iwl_mvm_mac_start(mvm); 1142 mutex_unlock(&mvm->mutex); 1143 1144 return ret; 1145 } 1146 1147 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1148 { 1149 int ret; 1150 1151 mutex_lock(&mvm->mutex); 1152 1153 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1154 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1155 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1156 if (ret) 1157 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1158 ret); 1159 1160 /* allow transport/FW low power modes */ 1161 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1162 1163 /* 1164 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1165 * of packets the FW sent out, so we must reconnect. 1166 */ 1167 iwl_mvm_teardown_tdls_peers(mvm); 1168 1169 mutex_unlock(&mvm->mutex); 1170 } 1171 1172 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1173 { 1174 if (iwl_mvm_is_d0i3_supported(mvm) && 1175 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1176 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1177 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1178 &mvm->status), 1179 HZ), 1180 "D0i3 exit on resume timed out\n"); 1181 } 1182 1183 static void 1184 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1185 enum ieee80211_reconfig_type reconfig_type) 1186 { 1187 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1188 1189 switch (reconfig_type) { 1190 case IEEE80211_RECONFIG_TYPE_RESTART: 1191 iwl_mvm_restart_complete(mvm); 1192 break; 1193 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1194 iwl_mvm_resume_complete(mvm); 1195 break; 1196 } 1197 } 1198 1199 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1200 { 1201 lockdep_assert_held(&mvm->mutex); 1202 1203 /* firmware counters are obviously reset now, but we shouldn't 1204 * partially track so also clear the fw_reset_accu counters. 1205 */ 1206 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1207 1208 /* async_handlers_wk is now blocked */ 1209 1210 /* 1211 * The work item could be running or queued if the 1212 * ROC time event stops just as we get here. 1213 */ 1214 flush_work(&mvm->roc_done_wk); 1215 1216 iwl_mvm_stop_device(mvm); 1217 1218 iwl_mvm_async_handlers_purge(mvm); 1219 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1220 1221 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1222 iwl_mvm_del_aux_sta(mvm); 1223 1224 /* 1225 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() 1226 * won't be called in this case). 1227 * But make sure to cleanup interfaces that have gone down before/during 1228 * HW restart was requested. 1229 */ 1230 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1231 ieee80211_iterate_interfaces(mvm->hw, 0, 1232 iwl_mvm_cleanup_iterator, mvm); 1233 1234 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1235 * make sure there's nothing left there and warn if any is found. 1236 */ 1237 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1238 int i; 1239 1240 for (i = 0; i < mvm->max_scans; i++) { 1241 if (WARN_ONCE(mvm->scan_uid_status[i], 1242 "UMAC scan UID %d status was not cleaned\n", 1243 i)) 1244 mvm->scan_uid_status[i] = 0; 1245 } 1246 } 1247 } 1248 1249 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1250 { 1251 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1252 1253 flush_work(&mvm->d0i3_exit_work); 1254 flush_work(&mvm->async_handlers_wk); 1255 flush_work(&mvm->add_stream_wk); 1256 1257 /* 1258 * Lock and clear the firmware running bit here already, so that 1259 * new commands coming in elsewhere, e.g. from debugfs, will not 1260 * be able to proceed. This is important here because one of those 1261 * debugfs files causes the firmware dump to be triggered, and if we 1262 * don't stop debugfs accesses before canceling that it could be 1263 * retriggered after we flush it but before we've cleared the bit. 1264 */ 1265 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1266 1267 iwl_fw_cancel_dump(&mvm->fwrt); 1268 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1269 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1270 iwl_fw_free_dump_desc(&mvm->fwrt); 1271 1272 mutex_lock(&mvm->mutex); 1273 __iwl_mvm_mac_stop(mvm); 1274 mutex_unlock(&mvm->mutex); 1275 1276 /* 1277 * The worker might have been waiting for the mutex, let it run and 1278 * discover that its list is now empty. 1279 */ 1280 cancel_work_sync(&mvm->async_handlers_wk); 1281 } 1282 1283 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1284 { 1285 u16 i; 1286 1287 lockdep_assert_held(&mvm->mutex); 1288 1289 for (i = 0; i < NUM_PHY_CTX; i++) 1290 if (!mvm->phy_ctxts[i].ref) 1291 return &mvm->phy_ctxts[i]; 1292 1293 IWL_ERR(mvm, "No available PHY context\n"); 1294 return NULL; 1295 } 1296 1297 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1298 s16 tx_power) 1299 { 1300 struct iwl_dev_tx_power_cmd cmd = { 1301 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1302 .v3.mac_context_id = 1303 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1304 .v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1305 }; 1306 int len = sizeof(cmd); 1307 1308 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1309 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1310 1311 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1312 len = sizeof(cmd.v3); 1313 1314 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1315 } 1316 1317 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1318 struct ieee80211_vif *vif) 1319 { 1320 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1321 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1322 int ret; 1323 1324 mvmvif->mvm = mvm; 1325 1326 /* 1327 * make sure D0i3 exit is completed, otherwise a target access 1328 * during tx queue configuration could be done when still in 1329 * D0i3 state. 1330 */ 1331 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1332 if (ret) 1333 return ret; 1334 1335 /* 1336 * Not much to do here. The stack will not allow interface 1337 * types or combinations that we didn't advertise, so we 1338 * don't really have to check the types. 1339 */ 1340 1341 mutex_lock(&mvm->mutex); 1342 1343 /* make sure that beacon statistics don't go backwards with FW reset */ 1344 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1345 mvmvif->beacon_stats.accu_num_beacons += 1346 mvmvif->beacon_stats.num_beacons; 1347 1348 /* Allocate resources for the MAC context, and add it to the fw */ 1349 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1350 if (ret) 1351 goto out_unlock; 1352 1353 /* Counting number of interfaces is needed for legacy PM */ 1354 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1355 mvm->vif_count++; 1356 1357 /* 1358 * The AP binding flow can be done only after the beacon 1359 * template is configured (which happens only in the mac80211 1360 * start_ap() flow), and adding the broadcast station can happen 1361 * only after the binding. 1362 * In addition, since modifying the MAC before adding a bcast 1363 * station is not allowed by the FW, delay the adding of MAC context to 1364 * the point where we can also add the bcast station. 1365 * In short: there's not much we can do at this point, other than 1366 * allocating resources :) 1367 */ 1368 if (vif->type == NL80211_IFTYPE_AP || 1369 vif->type == NL80211_IFTYPE_ADHOC) { 1370 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1371 if (ret) { 1372 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1373 goto out_release; 1374 } 1375 1376 /* 1377 * Only queue for this station is the mcast queue, 1378 * which shouldn't be in TFD mask anyway 1379 */ 1380 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1381 0, vif->type, 1382 IWL_STA_MULTICAST); 1383 if (ret) 1384 goto out_release; 1385 1386 iwl_mvm_vif_dbgfs_register(mvm, vif); 1387 goto out_unlock; 1388 } 1389 1390 mvmvif->features |= hw->netdev_features; 1391 1392 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1393 if (ret) 1394 goto out_release; 1395 1396 ret = iwl_mvm_power_update_mac(mvm); 1397 if (ret) 1398 goto out_remove_mac; 1399 1400 /* beacon filtering */ 1401 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1402 if (ret) 1403 goto out_remove_mac; 1404 1405 if (!mvm->bf_allowed_vif && 1406 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1407 mvm->bf_allowed_vif = mvmvif; 1408 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1409 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1410 } 1411 1412 /* 1413 * P2P_DEVICE interface does not have a channel context assigned to it, 1414 * so a dedicated PHY context is allocated to it and the corresponding 1415 * MAC context is bound to it at this stage. 1416 */ 1417 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1418 1419 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1420 if (!mvmvif->phy_ctxt) { 1421 ret = -ENOSPC; 1422 goto out_free_bf; 1423 } 1424 1425 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1426 ret = iwl_mvm_binding_add_vif(mvm, vif); 1427 if (ret) 1428 goto out_unref_phy; 1429 1430 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1431 if (ret) 1432 goto out_unbind; 1433 1434 /* Save a pointer to p2p device vif, so it can later be used to 1435 * update the p2p device MAC when a GO is started/stopped */ 1436 mvm->p2p_device_vif = vif; 1437 } 1438 1439 if (vif->type == NL80211_IFTYPE_MONITOR) 1440 mvm->monitor_on = true; 1441 1442 iwl_mvm_vif_dbgfs_register(mvm, vif); 1443 goto out_unlock; 1444 1445 out_unbind: 1446 iwl_mvm_binding_remove_vif(mvm, vif); 1447 out_unref_phy: 1448 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1449 out_free_bf: 1450 if (mvm->bf_allowed_vif == mvmvif) { 1451 mvm->bf_allowed_vif = NULL; 1452 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1453 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1454 } 1455 out_remove_mac: 1456 mvmvif->phy_ctxt = NULL; 1457 iwl_mvm_mac_ctxt_remove(mvm, vif); 1458 out_release: 1459 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1460 mvm->vif_count--; 1461 out_unlock: 1462 mutex_unlock(&mvm->mutex); 1463 1464 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1465 1466 return ret; 1467 } 1468 1469 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1470 struct ieee80211_vif *vif) 1471 { 1472 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1473 /* 1474 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1475 * We assume here that all the packets sent to the OFFCHANNEL 1476 * queue are sent in ROC session. 1477 */ 1478 flush_work(&mvm->roc_done_wk); 1479 } 1480 } 1481 1482 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1483 struct ieee80211_vif *vif) 1484 { 1485 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1486 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1487 1488 iwl_mvm_prepare_mac_removal(mvm, vif); 1489 1490 mutex_lock(&mvm->mutex); 1491 1492 if (mvm->bf_allowed_vif == mvmvif) { 1493 mvm->bf_allowed_vif = NULL; 1494 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1495 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1496 } 1497 1498 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1499 1500 /* 1501 * For AP/GO interface, the tear down of the resources allocated to the 1502 * interface is be handled as part of the stop_ap flow. 1503 */ 1504 if (vif->type == NL80211_IFTYPE_AP || 1505 vif->type == NL80211_IFTYPE_ADHOC) { 1506 #ifdef CONFIG_NL80211_TESTMODE 1507 if (vif == mvm->noa_vif) { 1508 mvm->noa_vif = NULL; 1509 mvm->noa_duration = 0; 1510 } 1511 #endif 1512 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1513 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1514 goto out_release; 1515 } 1516 1517 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1518 mvm->p2p_device_vif = NULL; 1519 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1520 iwl_mvm_binding_remove_vif(mvm, vif); 1521 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1522 mvmvif->phy_ctxt = NULL; 1523 } 1524 1525 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1526 mvm->vif_count--; 1527 1528 iwl_mvm_power_update_mac(mvm); 1529 iwl_mvm_mac_ctxt_remove(mvm, vif); 1530 1531 if (vif->type == NL80211_IFTYPE_MONITOR) 1532 mvm->monitor_on = false; 1533 1534 out_release: 1535 mutex_unlock(&mvm->mutex); 1536 } 1537 1538 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1539 { 1540 return 0; 1541 } 1542 1543 struct iwl_mvm_mc_iter_data { 1544 struct iwl_mvm *mvm; 1545 int port_id; 1546 }; 1547 1548 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1549 struct ieee80211_vif *vif) 1550 { 1551 struct iwl_mvm_mc_iter_data *data = _data; 1552 struct iwl_mvm *mvm = data->mvm; 1553 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1554 struct iwl_host_cmd hcmd = { 1555 .id = MCAST_FILTER_CMD, 1556 .flags = CMD_ASYNC, 1557 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1558 }; 1559 int ret, len; 1560 1561 /* if we don't have free ports, mcast frames will be dropped */ 1562 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1563 return; 1564 1565 if (vif->type != NL80211_IFTYPE_STATION || 1566 !vif->bss_conf.assoc) 1567 return; 1568 1569 cmd->port_id = data->port_id++; 1570 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1571 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1572 1573 hcmd.len[0] = len; 1574 hcmd.data[0] = cmd; 1575 1576 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1577 if (ret) 1578 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1579 } 1580 1581 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1582 { 1583 struct iwl_mvm_mc_iter_data iter_data = { 1584 .mvm = mvm, 1585 }; 1586 1587 lockdep_assert_held(&mvm->mutex); 1588 1589 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1590 return; 1591 1592 ieee80211_iterate_active_interfaces_atomic( 1593 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1594 iwl_mvm_mc_iface_iterator, &iter_data); 1595 } 1596 1597 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1598 struct netdev_hw_addr_list *mc_list) 1599 { 1600 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1601 struct iwl_mcast_filter_cmd *cmd; 1602 struct netdev_hw_addr *addr; 1603 int addr_count; 1604 bool pass_all; 1605 int len; 1606 1607 addr_count = netdev_hw_addr_list_count(mc_list); 1608 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1609 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1610 if (pass_all) 1611 addr_count = 0; 1612 1613 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1614 cmd = kzalloc(len, GFP_ATOMIC); 1615 if (!cmd) 1616 return 0; 1617 1618 if (pass_all) { 1619 cmd->pass_all = 1; 1620 return (u64)(unsigned long)cmd; 1621 } 1622 1623 netdev_hw_addr_list_for_each(addr, mc_list) { 1624 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1625 cmd->count, addr->addr); 1626 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1627 addr->addr, ETH_ALEN); 1628 cmd->count++; 1629 } 1630 1631 return (u64)(unsigned long)cmd; 1632 } 1633 1634 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1635 unsigned int changed_flags, 1636 unsigned int *total_flags, 1637 u64 multicast) 1638 { 1639 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1640 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1641 1642 mutex_lock(&mvm->mutex); 1643 1644 /* replace previous configuration */ 1645 kfree(mvm->mcast_filter_cmd); 1646 mvm->mcast_filter_cmd = cmd; 1647 1648 if (!cmd) 1649 goto out; 1650 1651 if (changed_flags & FIF_ALLMULTI) 1652 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1653 1654 if (cmd->pass_all) 1655 cmd->count = 0; 1656 1657 iwl_mvm_recalc_multicast(mvm); 1658 out: 1659 mutex_unlock(&mvm->mutex); 1660 *total_flags = 0; 1661 } 1662 1663 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1664 struct ieee80211_vif *vif, 1665 unsigned int filter_flags, 1666 unsigned int changed_flags) 1667 { 1668 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1669 1670 /* We support only filter for probe requests */ 1671 if (!(changed_flags & FIF_PROBE_REQ)) 1672 return; 1673 1674 /* Supported only for p2p client interfaces */ 1675 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1676 !vif->p2p) 1677 return; 1678 1679 mutex_lock(&mvm->mutex); 1680 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1681 mutex_unlock(&mvm->mutex); 1682 } 1683 1684 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1685 struct iwl_bcast_iter_data { 1686 struct iwl_mvm *mvm; 1687 struct iwl_bcast_filter_cmd *cmd; 1688 u8 current_filter; 1689 }; 1690 1691 static void 1692 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1693 const struct iwl_fw_bcast_filter *in_filter, 1694 struct iwl_fw_bcast_filter *out_filter) 1695 { 1696 struct iwl_fw_bcast_filter_attr *attr; 1697 int i; 1698 1699 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1700 1701 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1702 attr = &out_filter->attrs[i]; 1703 1704 if (!attr->mask) 1705 break; 1706 1707 switch (attr->reserved1) { 1708 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1709 if (vif->bss_conf.arp_addr_cnt != 1) { 1710 attr->mask = 0; 1711 continue; 1712 } 1713 1714 attr->val = vif->bss_conf.arp_addr_list[0]; 1715 break; 1716 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1717 attr->val = *(__be32 *)&vif->addr[2]; 1718 break; 1719 default: 1720 break; 1721 } 1722 attr->reserved1 = 0; 1723 out_filter->num_attrs++; 1724 } 1725 } 1726 1727 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1728 struct ieee80211_vif *vif) 1729 { 1730 struct iwl_bcast_iter_data *data = _data; 1731 struct iwl_mvm *mvm = data->mvm; 1732 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1733 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1734 struct iwl_fw_bcast_mac *bcast_mac; 1735 int i; 1736 1737 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1738 return; 1739 1740 bcast_mac = &cmd->macs[mvmvif->id]; 1741 1742 /* 1743 * enable filtering only for associated stations, but not for P2P 1744 * Clients 1745 */ 1746 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1747 !vif->bss_conf.assoc) 1748 return; 1749 1750 bcast_mac->default_discard = 1; 1751 1752 /* copy all configured filters */ 1753 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1754 /* 1755 * Make sure we don't exceed our filters limit. 1756 * if there is still a valid filter to be configured, 1757 * be on the safe side and just allow bcast for this mac. 1758 */ 1759 if (WARN_ON_ONCE(data->current_filter >= 1760 ARRAY_SIZE(cmd->filters))) { 1761 bcast_mac->default_discard = 0; 1762 bcast_mac->attached_filters = 0; 1763 break; 1764 } 1765 1766 iwl_mvm_set_bcast_filter(vif, 1767 &mvm->bcast_filters[i], 1768 &cmd->filters[data->current_filter]); 1769 1770 /* skip current filter if it contains no attributes */ 1771 if (!cmd->filters[data->current_filter].num_attrs) 1772 continue; 1773 1774 /* attach the filter to current mac */ 1775 bcast_mac->attached_filters |= 1776 cpu_to_le16(BIT(data->current_filter)); 1777 1778 data->current_filter++; 1779 } 1780 } 1781 1782 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1783 struct iwl_bcast_filter_cmd *cmd) 1784 { 1785 struct iwl_bcast_iter_data iter_data = { 1786 .mvm = mvm, 1787 .cmd = cmd, 1788 }; 1789 1790 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1791 return false; 1792 1793 memset(cmd, 0, sizeof(*cmd)); 1794 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1795 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1796 1797 #ifdef CONFIG_IWLWIFI_DEBUGFS 1798 /* use debugfs filters/macs if override is configured */ 1799 if (mvm->dbgfs_bcast_filtering.override) { 1800 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1801 sizeof(cmd->filters)); 1802 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1803 sizeof(cmd->macs)); 1804 return true; 1805 } 1806 #endif 1807 1808 /* if no filters are configured, do nothing */ 1809 if (!mvm->bcast_filters) 1810 return false; 1811 1812 /* configure and attach these filters for each associated sta vif */ 1813 ieee80211_iterate_active_interfaces( 1814 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1815 iwl_mvm_bcast_filter_iterator, &iter_data); 1816 1817 return true; 1818 } 1819 1820 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1821 { 1822 struct iwl_bcast_filter_cmd cmd; 1823 1824 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1825 return 0; 1826 1827 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1828 return 0; 1829 1830 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1831 sizeof(cmd), &cmd); 1832 } 1833 #else 1834 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1835 { 1836 return 0; 1837 } 1838 #endif 1839 1840 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1841 struct ieee80211_vif *vif) 1842 { 1843 struct iwl_mu_group_mgmt_cmd cmd = {}; 1844 1845 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1846 WLAN_MEMBERSHIP_LEN); 1847 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1848 WLAN_USER_POSITION_LEN); 1849 1850 return iwl_mvm_send_cmd_pdu(mvm, 1851 WIDE_ID(DATA_PATH_GROUP, 1852 UPDATE_MU_GROUPS_CMD), 1853 0, sizeof(cmd), &cmd); 1854 } 1855 1856 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1857 struct ieee80211_vif *vif) 1858 { 1859 if (vif->mu_mimo_owner) { 1860 struct iwl_mu_group_mgmt_notif *notif = _data; 1861 1862 /* 1863 * MU-MIMO Group Id action frame is little endian. We treat 1864 * the data received from firmware as if it came from the 1865 * action frame, so no conversion is needed. 1866 */ 1867 ieee80211_update_mu_groups(vif, 1868 (u8 *)¬if->membership_status, 1869 (u8 *)¬if->user_position); 1870 } 1871 } 1872 1873 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1874 struct iwl_rx_cmd_buffer *rxb) 1875 { 1876 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1877 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1878 1879 ieee80211_iterate_active_interfaces_atomic( 1880 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1881 iwl_mvm_mu_mimo_iface_iterator, notif); 1882 } 1883 1884 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 1885 struct ieee80211_vif *vif, 1886 struct ieee80211_bss_conf *bss_conf, 1887 u32 changes) 1888 { 1889 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1890 int ret; 1891 1892 /* 1893 * Re-calculate the tsf id, as the master-slave relations depend on the 1894 * beacon interval, which was not known when the station interface was 1895 * added. 1896 */ 1897 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) 1898 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 1899 1900 /* 1901 * If we're not associated yet, take the (new) BSSID before associating 1902 * so the firmware knows. If we're already associated, then use the old 1903 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 1904 * branch for disassociation below. 1905 */ 1906 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 1907 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1908 1909 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 1910 if (ret) 1911 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 1912 1913 /* after sending it once, adopt mac80211 data */ 1914 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1915 mvmvif->associated = bss_conf->assoc; 1916 1917 if (changes & BSS_CHANGED_ASSOC) { 1918 if (bss_conf->assoc) { 1919 /* clear statistics to get clean beacon counter */ 1920 iwl_mvm_request_statistics(mvm, true); 1921 memset(&mvmvif->beacon_stats, 0, 1922 sizeof(mvmvif->beacon_stats)); 1923 1924 /* add quota for this interface */ 1925 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1926 if (ret) { 1927 IWL_ERR(mvm, "failed to update quotas\n"); 1928 return; 1929 } 1930 1931 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1932 &mvm->status)) { 1933 /* 1934 * If we're restarting then the firmware will 1935 * obviously have lost synchronisation with 1936 * the AP. It will attempt to synchronise by 1937 * itself, but we can make it more reliable by 1938 * scheduling a session protection time event. 1939 * 1940 * The firmware needs to receive a beacon to 1941 * catch up with synchronisation, use 110% of 1942 * the beacon interval. 1943 * 1944 * Set a large maximum delay to allow for more 1945 * than a single interface. 1946 */ 1947 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 1948 iwl_mvm_protect_session(mvm, vif, dur, dur, 1949 5 * dur, false); 1950 } 1951 1952 iwl_mvm_sf_update(mvm, vif, false); 1953 iwl_mvm_power_vif_assoc(mvm, vif); 1954 if (vif->p2p) { 1955 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 1956 iwl_mvm_update_smps(mvm, vif, 1957 IWL_MVM_SMPS_REQ_PROT, 1958 IEEE80211_SMPS_DYNAMIC); 1959 } 1960 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 1961 /* 1962 * If update fails - SF might be running in associated 1963 * mode while disassociated - which is forbidden. 1964 */ 1965 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 1966 "Failed to update SF upon disassociation\n"); 1967 1968 /* 1969 * If we get an assert during the connection (after the 1970 * station has been added, but before the vif is set 1971 * to associated), mac80211 will re-add the station and 1972 * then configure the vif. Since the vif is not 1973 * associated, we would remove the station here and 1974 * this would fail the recovery. 1975 */ 1976 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1977 &mvm->status)) { 1978 /* 1979 * Remove AP station now that 1980 * the MAC is unassoc 1981 */ 1982 ret = iwl_mvm_rm_sta_id(mvm, vif, 1983 mvmvif->ap_sta_id); 1984 if (ret) 1985 IWL_ERR(mvm, 1986 "failed to remove AP station\n"); 1987 1988 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 1989 mvm->d0i3_ap_sta_id = 1990 IWL_MVM_INVALID_STA; 1991 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1992 } 1993 1994 /* remove quota for this interface */ 1995 ret = iwl_mvm_update_quotas(mvm, false, NULL); 1996 if (ret) 1997 IWL_ERR(mvm, "failed to update quotas\n"); 1998 1999 if (vif->p2p) 2000 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 2001 2002 /* this will take the cleared BSSID from bss_conf */ 2003 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2004 if (ret) 2005 IWL_ERR(mvm, 2006 "failed to update MAC %pM (clear after unassoc)\n", 2007 vif->addr); 2008 } 2009 2010 /* 2011 * The firmware tracks the MU-MIMO group on its own. 2012 * However, on HW restart we should restore this data. 2013 */ 2014 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2015 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2016 ret = iwl_mvm_update_mu_groups(mvm, vif); 2017 if (ret) 2018 IWL_ERR(mvm, 2019 "failed to update VHT MU_MIMO groups\n"); 2020 } 2021 2022 iwl_mvm_recalc_multicast(mvm); 2023 iwl_mvm_configure_bcast_filter(mvm); 2024 2025 /* reset rssi values */ 2026 mvmvif->bf_data.ave_beacon_signal = 0; 2027 2028 iwl_mvm_bt_coex_vif_change(mvm); 2029 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2030 IEEE80211_SMPS_AUTOMATIC); 2031 if (fw_has_capa(&mvm->fw->ucode_capa, 2032 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2033 iwl_mvm_config_scan(mvm); 2034 } 2035 2036 if (changes & BSS_CHANGED_BEACON_INFO) { 2037 /* 2038 * We received a beacon from the associated AP so 2039 * remove the session protection. 2040 */ 2041 iwl_mvm_stop_session_protection(mvm, vif); 2042 2043 iwl_mvm_sf_update(mvm, vif, false); 2044 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2045 } 2046 2047 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2048 /* 2049 * Send power command on every beacon change, 2050 * because we may have not enabled beacon abort yet. 2051 */ 2052 BSS_CHANGED_BEACON_INFO)) { 2053 ret = iwl_mvm_power_update_mac(mvm); 2054 if (ret) 2055 IWL_ERR(mvm, "failed to update power mode\n"); 2056 } 2057 2058 if (changes & BSS_CHANGED_TXPOWER) { 2059 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2060 bss_conf->txpower); 2061 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2062 } 2063 2064 if (changes & BSS_CHANGED_CQM) { 2065 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2066 /* reset cqm events tracking */ 2067 mvmvif->bf_data.last_cqm_event = 0; 2068 if (mvmvif->bf_data.bf_enabled) { 2069 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2070 if (ret) 2071 IWL_ERR(mvm, 2072 "failed to update CQM thresholds\n"); 2073 } 2074 } 2075 2076 if (changes & BSS_CHANGED_ARP_FILTER) { 2077 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2078 iwl_mvm_configure_bcast_filter(mvm); 2079 } 2080 } 2081 2082 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2083 struct ieee80211_vif *vif) 2084 { 2085 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2086 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2087 int ret; 2088 2089 /* 2090 * iwl_mvm_mac_ctxt_add() might read directly from the device 2091 * (the system time), so make sure it is available. 2092 */ 2093 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2094 if (ret) 2095 return ret; 2096 2097 mutex_lock(&mvm->mutex); 2098 2099 /* Send the beacon template */ 2100 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2101 if (ret) 2102 goto out_unlock; 2103 2104 /* 2105 * Re-calculate the tsf id, as the master-slave relations depend on the 2106 * beacon interval, which was not known when the AP interface was added. 2107 */ 2108 if (vif->type == NL80211_IFTYPE_AP) 2109 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2110 2111 mvmvif->ap_assoc_sta_count = 0; 2112 2113 /* Add the mac context */ 2114 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2115 if (ret) 2116 goto out_unlock; 2117 2118 /* Perform the binding */ 2119 ret = iwl_mvm_binding_add_vif(mvm, vif); 2120 if (ret) 2121 goto out_remove; 2122 2123 /* 2124 * This is not very nice, but the simplest: 2125 * For older FWs adding the mcast sta before the bcast station may 2126 * cause assert 0x2b00. 2127 * This is fixed in later FW so make the order of removal depend on 2128 * the TLV 2129 */ 2130 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2131 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2132 if (ret) 2133 goto out_unbind; 2134 /* 2135 * Send the bcast station. At this stage the TBTT and DTIM time 2136 * events are added and applied to the scheduler 2137 */ 2138 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2139 if (ret) { 2140 iwl_mvm_rm_mcast_sta(mvm, vif); 2141 goto out_unbind; 2142 } 2143 } else { 2144 /* 2145 * Send the bcast station. At this stage the TBTT and DTIM time 2146 * events are added and applied to the scheduler 2147 */ 2148 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2149 if (ret) 2150 goto out_unbind; 2151 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2152 if (ret) { 2153 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2154 goto out_unbind; 2155 } 2156 } 2157 2158 /* must be set before quota calculations */ 2159 mvmvif->ap_ibss_active = true; 2160 2161 /* power updated needs to be done before quotas */ 2162 iwl_mvm_power_update_mac(mvm); 2163 2164 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2165 if (ret) 2166 goto out_quota_failed; 2167 2168 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2169 if (vif->p2p && mvm->p2p_device_vif) 2170 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2171 2172 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2173 2174 iwl_mvm_bt_coex_vif_change(mvm); 2175 2176 /* we don't support TDLS during DCM */ 2177 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2178 iwl_mvm_teardown_tdls_peers(mvm); 2179 2180 goto out_unlock; 2181 2182 out_quota_failed: 2183 iwl_mvm_power_update_mac(mvm); 2184 mvmvif->ap_ibss_active = false; 2185 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2186 iwl_mvm_rm_mcast_sta(mvm, vif); 2187 out_unbind: 2188 iwl_mvm_binding_remove_vif(mvm, vif); 2189 out_remove: 2190 iwl_mvm_mac_ctxt_remove(mvm, vif); 2191 out_unlock: 2192 mutex_unlock(&mvm->mutex); 2193 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2194 return ret; 2195 } 2196 2197 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2198 struct ieee80211_vif *vif) 2199 { 2200 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2201 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2202 2203 iwl_mvm_prepare_mac_removal(mvm, vif); 2204 2205 mutex_lock(&mvm->mutex); 2206 2207 /* Handle AP stop while in CSA */ 2208 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2209 iwl_mvm_remove_time_event(mvm, mvmvif, 2210 &mvmvif->time_event_data); 2211 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2212 mvmvif->csa_countdown = false; 2213 } 2214 2215 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2216 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2217 mvm->csa_tx_block_bcn_timeout = 0; 2218 } 2219 2220 mvmvif->ap_ibss_active = false; 2221 mvm->ap_last_beacon_gp2 = 0; 2222 2223 iwl_mvm_bt_coex_vif_change(mvm); 2224 2225 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2226 2227 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2228 if (vif->p2p && mvm->p2p_device_vif) 2229 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2230 2231 iwl_mvm_update_quotas(mvm, false, NULL); 2232 2233 /* 2234 * This is not very nice, but the simplest: 2235 * For older FWs removing the mcast sta before the bcast station may 2236 * cause assert 0x2b00. 2237 * This is fixed in later FW (which will stop beaconing when removing 2238 * bcast station). 2239 * So make the order of removal depend on the TLV 2240 */ 2241 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2242 iwl_mvm_rm_mcast_sta(mvm, vif); 2243 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2244 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2245 iwl_mvm_rm_mcast_sta(mvm, vif); 2246 iwl_mvm_binding_remove_vif(mvm, vif); 2247 2248 iwl_mvm_power_update_mac(mvm); 2249 2250 iwl_mvm_mac_ctxt_remove(mvm, vif); 2251 2252 mutex_unlock(&mvm->mutex); 2253 } 2254 2255 static void 2256 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2257 struct ieee80211_vif *vif, 2258 struct ieee80211_bss_conf *bss_conf, 2259 u32 changes) 2260 { 2261 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2262 2263 /* Changes will be applied when the AP/IBSS is started */ 2264 if (!mvmvif->ap_ibss_active) 2265 return; 2266 2267 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2268 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2269 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2270 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2271 2272 /* Need to send a new beacon template to the FW */ 2273 if (changes & BSS_CHANGED_BEACON && 2274 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2275 IWL_WARN(mvm, "Failed updating beacon data\n"); 2276 2277 if (changes & BSS_CHANGED_TXPOWER) { 2278 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2279 bss_conf->txpower); 2280 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2281 } 2282 } 2283 2284 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2285 struct ieee80211_vif *vif, 2286 struct ieee80211_bss_conf *bss_conf, 2287 u32 changes) 2288 { 2289 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2290 2291 /* 2292 * iwl_mvm_bss_info_changed_station() might call 2293 * iwl_mvm_protect_session(), which reads directly from 2294 * the device (the system time), so make sure it is available. 2295 */ 2296 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2297 return; 2298 2299 mutex_lock(&mvm->mutex); 2300 2301 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2302 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2303 2304 switch (vif->type) { 2305 case NL80211_IFTYPE_STATION: 2306 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2307 break; 2308 case NL80211_IFTYPE_AP: 2309 case NL80211_IFTYPE_ADHOC: 2310 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2311 break; 2312 case NL80211_IFTYPE_MONITOR: 2313 if (changes & BSS_CHANGED_MU_GROUPS) 2314 iwl_mvm_update_mu_groups(mvm, vif); 2315 break; 2316 default: 2317 /* shouldn't happen */ 2318 WARN_ON_ONCE(1); 2319 } 2320 2321 mutex_unlock(&mvm->mutex); 2322 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2323 } 2324 2325 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2326 struct ieee80211_vif *vif, 2327 struct ieee80211_scan_request *hw_req) 2328 { 2329 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2330 int ret; 2331 2332 if (hw_req->req.n_channels == 0 || 2333 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2334 return -EINVAL; 2335 2336 mutex_lock(&mvm->mutex); 2337 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2338 mutex_unlock(&mvm->mutex); 2339 2340 return ret; 2341 } 2342 2343 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2344 struct ieee80211_vif *vif) 2345 { 2346 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2347 2348 mutex_lock(&mvm->mutex); 2349 2350 /* Due to a race condition, it's possible that mac80211 asks 2351 * us to stop a hw_scan when it's already stopped. This can 2352 * happen, for instance, if we stopped the scan ourselves, 2353 * called ieee80211_scan_completed() and the userspace called 2354 * cancel scan scan before ieee80211_scan_work() could run. 2355 * To handle that, simply return if the scan is not running. 2356 */ 2357 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2358 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2359 2360 mutex_unlock(&mvm->mutex); 2361 } 2362 2363 static void 2364 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2365 struct ieee80211_sta *sta, u16 tids, 2366 int num_frames, 2367 enum ieee80211_frame_release_type reason, 2368 bool more_data) 2369 { 2370 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2371 2372 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2373 2374 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2375 tids, more_data, false); 2376 } 2377 2378 static void 2379 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2380 struct ieee80211_sta *sta, u16 tids, 2381 int num_frames, 2382 enum ieee80211_frame_release_type reason, 2383 bool more_data) 2384 { 2385 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2386 2387 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2388 2389 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2390 tids, more_data, true); 2391 } 2392 2393 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2394 enum sta_notify_cmd cmd, 2395 struct ieee80211_sta *sta) 2396 { 2397 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2398 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2399 unsigned long txqs = 0, tids = 0; 2400 int tid; 2401 2402 /* 2403 * If we have TVQM then we get too high queue numbers - luckily 2404 * we really shouldn't get here with that because such hardware 2405 * should have firmware supporting buffer station offload. 2406 */ 2407 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2408 return; 2409 2410 spin_lock_bh(&mvmsta->lock); 2411 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2412 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2413 2414 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2415 continue; 2416 2417 __set_bit(tid_data->txq_id, &txqs); 2418 2419 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2420 continue; 2421 2422 __set_bit(tid, &tids); 2423 } 2424 2425 switch (cmd) { 2426 case STA_NOTIFY_SLEEP: 2427 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2428 ieee80211_sta_set_buffered(sta, tid, true); 2429 2430 if (txqs) 2431 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2432 /* 2433 * The fw updates the STA to be asleep. Tx packets on the Tx 2434 * queues to this station will not be transmitted. The fw will 2435 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2436 */ 2437 break; 2438 case STA_NOTIFY_AWAKE: 2439 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2440 break; 2441 2442 if (txqs) 2443 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2444 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2445 break; 2446 default: 2447 break; 2448 } 2449 spin_unlock_bh(&mvmsta->lock); 2450 } 2451 2452 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2453 struct ieee80211_vif *vif, 2454 enum sta_notify_cmd cmd, 2455 struct ieee80211_sta *sta) 2456 { 2457 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2458 } 2459 2460 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2461 { 2462 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2463 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2464 struct ieee80211_sta *sta; 2465 struct iwl_mvm_sta *mvmsta; 2466 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2467 2468 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2469 return; 2470 2471 rcu_read_lock(); 2472 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2473 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2474 rcu_read_unlock(); 2475 return; 2476 } 2477 2478 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2479 2480 if (!mvmsta->vif || 2481 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2482 rcu_read_unlock(); 2483 return; 2484 } 2485 2486 if (mvmsta->sleeping != sleeping) { 2487 mvmsta->sleeping = sleeping; 2488 __iwl_mvm_mac_sta_notify(mvm->hw, 2489 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2490 sta); 2491 ieee80211_sta_ps_transition(sta, sleeping); 2492 } 2493 2494 if (sleeping) { 2495 switch (notif->type) { 2496 case IWL_MVM_PM_EVENT_AWAKE: 2497 case IWL_MVM_PM_EVENT_ASLEEP: 2498 break; 2499 case IWL_MVM_PM_EVENT_UAPSD: 2500 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2501 break; 2502 case IWL_MVM_PM_EVENT_PS_POLL: 2503 ieee80211_sta_pspoll(sta); 2504 break; 2505 default: 2506 break; 2507 } 2508 } 2509 2510 rcu_read_unlock(); 2511 } 2512 2513 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2514 struct ieee80211_vif *vif, 2515 struct ieee80211_sta *sta) 2516 { 2517 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2518 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2519 2520 /* 2521 * This is called before mac80211 does RCU synchronisation, 2522 * so here we already invalidate our internal RCU-protected 2523 * station pointer. The rest of the code will thus no longer 2524 * be able to find the station this way, and we don't rely 2525 * on further RCU synchronisation after the sta_state() 2526 * callback deleted the station. 2527 */ 2528 mutex_lock(&mvm->mutex); 2529 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2530 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2531 ERR_PTR(-ENOENT)); 2532 2533 mutex_unlock(&mvm->mutex); 2534 } 2535 2536 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2537 const u8 *bssid) 2538 { 2539 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2540 return; 2541 2542 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2543 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2544 return; 2545 } 2546 2547 if (!vif->p2p && 2548 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2549 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2550 return; 2551 } 2552 2553 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2554 } 2555 2556 static void 2557 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2558 struct ieee80211_vif *vif, u8 *peer_addr, 2559 enum nl80211_tdls_operation action) 2560 { 2561 struct iwl_fw_dbg_trigger_tlv *trig; 2562 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2563 2564 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) 2565 return; 2566 2567 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); 2568 tdls_trig = (void *)trig->data; 2569 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 2570 ieee80211_vif_to_wdev(vif), trig)) 2571 return; 2572 2573 if (!(tdls_trig->action_bitmap & BIT(action))) 2574 return; 2575 2576 if (tdls_trig->peer_mode && 2577 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2578 return; 2579 2580 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2581 "TDLS event occurred, peer %pM, action %d", 2582 peer_addr, action); 2583 } 2584 2585 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2586 struct iwl_mvm_sta *mvm_sta) 2587 { 2588 struct iwl_mvm_tid_data *tid_data; 2589 struct sk_buff *skb; 2590 int i; 2591 2592 spin_lock_bh(&mvm_sta->lock); 2593 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2594 tid_data = &mvm_sta->tid_data[i]; 2595 2596 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) { 2597 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 2598 2599 /* 2600 * The first deferred frame should've stopped the MAC 2601 * queues, so we should never get a second deferred 2602 * frame for the RA/TID. 2603 */ 2604 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue)); 2605 ieee80211_free_txskb(mvm->hw, skb); 2606 } 2607 } 2608 spin_unlock_bh(&mvm_sta->lock); 2609 } 2610 2611 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2612 struct ieee80211_vif *vif, 2613 struct ieee80211_sta *sta, 2614 enum ieee80211_sta_state old_state, 2615 enum ieee80211_sta_state new_state) 2616 { 2617 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2618 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2619 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2620 int ret; 2621 2622 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2623 sta->addr, old_state, new_state); 2624 2625 /* this would be a mac80211 bug ... but don't crash */ 2626 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2627 return -EINVAL; 2628 2629 /* 2630 * If we are in a STA removal flow and in DQA mode: 2631 * 2632 * This is after the sync_rcu part, so the queues have already been 2633 * flushed. No more TXs on their way in mac80211's path, and no more in 2634 * the queues. 2635 * Also, we won't be getting any new TX frames for this station. 2636 * What we might have are deferred TX frames that need to be taken care 2637 * of. 2638 * 2639 * Drop any still-queued deferred-frame before removing the STA, and 2640 * make sure the worker is no longer handling frames for this STA. 2641 */ 2642 if (old_state == IEEE80211_STA_NONE && 2643 new_state == IEEE80211_STA_NOTEXIST) { 2644 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2645 flush_work(&mvm->add_stream_wk); 2646 2647 /* 2648 * No need to make sure deferred TX indication is off since the 2649 * worker will already remove it if it was on 2650 */ 2651 } 2652 2653 mutex_lock(&mvm->mutex); 2654 /* track whether or not the station is associated */ 2655 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC; 2656 2657 if (old_state == IEEE80211_STA_NOTEXIST && 2658 new_state == IEEE80211_STA_NONE) { 2659 /* 2660 * Firmware bug - it'll crash if the beacon interval is less 2661 * than 16. We can't avoid connecting at all, so refuse the 2662 * station state change, this will cause mac80211 to abandon 2663 * attempts to connect to this AP, and eventually wpa_s will 2664 * blacklist the AP... 2665 */ 2666 if (vif->type == NL80211_IFTYPE_STATION && 2667 vif->bss_conf.beacon_int < 16) { 2668 IWL_ERR(mvm, 2669 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2670 sta->addr, vif->bss_conf.beacon_int); 2671 ret = -EINVAL; 2672 goto out_unlock; 2673 } 2674 2675 if (sta->tdls && 2676 (vif->p2p || 2677 iwl_mvm_tdls_sta_count(mvm, NULL) == 2678 IWL_MVM_TDLS_STA_COUNT || 2679 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2680 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2681 ret = -EBUSY; 2682 goto out_unlock; 2683 } 2684 2685 ret = iwl_mvm_add_sta(mvm, vif, sta); 2686 if (sta->tdls && ret == 0) { 2687 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2688 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2689 NL80211_TDLS_SETUP); 2690 } 2691 } else if (old_state == IEEE80211_STA_NONE && 2692 new_state == IEEE80211_STA_AUTH) { 2693 /* 2694 * EBS may be disabled due to previous failures reported by FW. 2695 * Reset EBS status here assuming environment has been changed. 2696 */ 2697 mvm->last_ebs_successful = true; 2698 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2699 ret = 0; 2700 } else if (old_state == IEEE80211_STA_AUTH && 2701 new_state == IEEE80211_STA_ASSOC) { 2702 if (vif->type == NL80211_IFTYPE_AP) { 2703 mvmvif->ap_assoc_sta_count++; 2704 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2705 } 2706 2707 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2708 true); 2709 ret = iwl_mvm_update_sta(mvm, vif, sta); 2710 } else if (old_state == IEEE80211_STA_ASSOC && 2711 new_state == IEEE80211_STA_AUTHORIZED) { 2712 2713 /* we don't support TDLS during DCM */ 2714 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2715 iwl_mvm_teardown_tdls_peers(mvm); 2716 2717 if (sta->tdls) 2718 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2719 NL80211_TDLS_ENABLE_LINK); 2720 2721 /* enable beacon filtering */ 2722 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2723 2724 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2725 false); 2726 2727 ret = 0; 2728 } else if (old_state == IEEE80211_STA_AUTHORIZED && 2729 new_state == IEEE80211_STA_ASSOC) { 2730 /* disable beacon filtering */ 2731 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 2732 ret = 0; 2733 } else if (old_state == IEEE80211_STA_ASSOC && 2734 new_state == IEEE80211_STA_AUTH) { 2735 if (vif->type == NL80211_IFTYPE_AP) { 2736 mvmvif->ap_assoc_sta_count--; 2737 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2738 } 2739 ret = 0; 2740 } else if (old_state == IEEE80211_STA_AUTH && 2741 new_state == IEEE80211_STA_NONE) { 2742 ret = 0; 2743 } else if (old_state == IEEE80211_STA_NONE && 2744 new_state == IEEE80211_STA_NOTEXIST) { 2745 ret = iwl_mvm_rm_sta(mvm, vif, sta); 2746 if (sta->tdls) { 2747 iwl_mvm_recalc_tdls_state(mvm, vif, false); 2748 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2749 NL80211_TDLS_DISABLE_LINK); 2750 } 2751 } else { 2752 ret = -EIO; 2753 } 2754 out_unlock: 2755 mutex_unlock(&mvm->mutex); 2756 2757 if (sta->tdls && ret == 0) { 2758 if (old_state == IEEE80211_STA_NOTEXIST && 2759 new_state == IEEE80211_STA_NONE) 2760 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2761 else if (old_state == IEEE80211_STA_NONE && 2762 new_state == IEEE80211_STA_NOTEXIST) 2763 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2764 } 2765 2766 return ret; 2767 } 2768 2769 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 2770 { 2771 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2772 2773 mvm->rts_threshold = value; 2774 2775 return 0; 2776 } 2777 2778 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 2779 struct ieee80211_vif *vif, 2780 struct ieee80211_sta *sta, u32 changed) 2781 { 2782 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2783 2784 if (vif->type == NL80211_IFTYPE_STATION && 2785 changed & IEEE80211_RC_NSS_CHANGED) 2786 iwl_mvm_sf_update(mvm, vif, false); 2787 } 2788 2789 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 2790 struct ieee80211_vif *vif, u16 ac, 2791 const struct ieee80211_tx_queue_params *params) 2792 { 2793 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2794 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2795 2796 mvmvif->queue_params[ac] = *params; 2797 2798 /* 2799 * No need to update right away, we'll get BSS_CHANGED_QOS 2800 * The exception is P2P_DEVICE interface which needs immediate update. 2801 */ 2802 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2803 int ret; 2804 2805 mutex_lock(&mvm->mutex); 2806 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2807 mutex_unlock(&mvm->mutex); 2808 return ret; 2809 } 2810 return 0; 2811 } 2812 2813 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 2814 struct ieee80211_vif *vif) 2815 { 2816 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2817 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2818 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2819 2820 /* 2821 * iwl_mvm_protect_session() reads directly from the device 2822 * (the system time), so make sure it is available. 2823 */ 2824 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 2825 return; 2826 2827 mutex_lock(&mvm->mutex); 2828 /* Try really hard to protect the session and hear a beacon */ 2829 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 2830 mutex_unlock(&mvm->mutex); 2831 2832 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 2833 } 2834 2835 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 2836 struct ieee80211_vif *vif, 2837 struct cfg80211_sched_scan_request *req, 2838 struct ieee80211_scan_ies *ies) 2839 { 2840 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2841 2842 int ret; 2843 2844 mutex_lock(&mvm->mutex); 2845 2846 if (!vif->bss_conf.idle) { 2847 ret = -EBUSY; 2848 goto out; 2849 } 2850 2851 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 2852 2853 out: 2854 mutex_unlock(&mvm->mutex); 2855 return ret; 2856 } 2857 2858 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 2859 struct ieee80211_vif *vif) 2860 { 2861 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2862 int ret; 2863 2864 mutex_lock(&mvm->mutex); 2865 2866 /* Due to a race condition, it's possible that mac80211 asks 2867 * us to stop a sched_scan when it's already stopped. This 2868 * can happen, for instance, if we stopped the scan ourselves, 2869 * called ieee80211_sched_scan_stopped() and the userspace called 2870 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 2871 * could run. To handle this, simply return if the scan is 2872 * not running. 2873 */ 2874 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 2875 mutex_unlock(&mvm->mutex); 2876 return 0; 2877 } 2878 2879 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 2880 mutex_unlock(&mvm->mutex); 2881 iwl_mvm_wait_for_async_handlers(mvm); 2882 2883 return ret; 2884 } 2885 2886 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 2887 enum set_key_cmd cmd, 2888 struct ieee80211_vif *vif, 2889 struct ieee80211_sta *sta, 2890 struct ieee80211_key_conf *key) 2891 { 2892 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2893 struct iwl_mvm_sta *mvmsta; 2894 struct iwl_mvm_key_pn *ptk_pn; 2895 int keyidx = key->keyidx; 2896 int ret; 2897 u8 key_offset; 2898 2899 if (iwlwifi_mod_params.swcrypto) { 2900 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 2901 return -EOPNOTSUPP; 2902 } 2903 2904 switch (key->cipher) { 2905 case WLAN_CIPHER_SUITE_TKIP: 2906 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 2907 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2908 break; 2909 case WLAN_CIPHER_SUITE_CCMP: 2910 case WLAN_CIPHER_SUITE_GCMP: 2911 case WLAN_CIPHER_SUITE_GCMP_256: 2912 if (!iwl_mvm_has_new_tx_api(mvm)) 2913 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2914 break; 2915 case WLAN_CIPHER_SUITE_AES_CMAC: 2916 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2917 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2918 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 2919 break; 2920 case WLAN_CIPHER_SUITE_WEP40: 2921 case WLAN_CIPHER_SUITE_WEP104: 2922 /* For non-client mode, only use WEP keys for TX as we probably 2923 * don't have a station yet anyway and would then have to keep 2924 * track of the keys, linking them to each of the clients/peers 2925 * as they appear. For now, don't do that, for performance WEP 2926 * offload doesn't really matter much, but we need it for some 2927 * other offload features in client mode. 2928 */ 2929 if (vif->type != NL80211_IFTYPE_STATION) 2930 return 0; 2931 break; 2932 default: 2933 /* currently FW supports only one optional cipher scheme */ 2934 if (hw->n_cipher_schemes && 2935 hw->cipher_schemes->cipher == key->cipher) 2936 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2937 else 2938 return -EOPNOTSUPP; 2939 } 2940 2941 mutex_lock(&mvm->mutex); 2942 2943 switch (cmd) { 2944 case SET_KEY: 2945 if ((vif->type == NL80211_IFTYPE_ADHOC || 2946 vif->type == NL80211_IFTYPE_AP) && !sta) { 2947 /* 2948 * GTK on AP interface is a TX-only key, return 0; 2949 * on IBSS they're per-station and because we're lazy 2950 * we don't support them for RX, so do the same. 2951 * CMAC/GMAC in AP/IBSS modes must be done in software. 2952 */ 2953 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 2954 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 2955 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 2956 ret = -EOPNOTSUPP; 2957 else 2958 ret = 0; 2959 2960 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 2961 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 2962 !iwl_mvm_has_new_tx_api(mvm)) { 2963 key->hw_key_idx = STA_KEY_IDX_INVALID; 2964 break; 2965 } 2966 } 2967 2968 /* During FW restart, in order to restore the state as it was, 2969 * don't try to reprogram keys we previously failed for. 2970 */ 2971 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2972 key->hw_key_idx == STA_KEY_IDX_INVALID) { 2973 IWL_DEBUG_MAC80211(mvm, 2974 "skip invalid idx key programming during restart\n"); 2975 ret = 0; 2976 break; 2977 } 2978 2979 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2980 sta && iwl_mvm_has_new_rx_api(mvm) && 2981 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2982 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2983 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2984 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2985 struct ieee80211_key_seq seq; 2986 int tid, q; 2987 2988 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2989 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 2990 ptk_pn = kzalloc(sizeof(*ptk_pn) + 2991 mvm->trans->num_rx_queues * 2992 sizeof(ptk_pn->q[0]), 2993 GFP_KERNEL); 2994 if (!ptk_pn) { 2995 ret = -ENOMEM; 2996 break; 2997 } 2998 2999 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3000 ieee80211_get_key_rx_seq(key, tid, &seq); 3001 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3002 memcpy(ptk_pn->q[q].pn[tid], 3003 seq.ccmp.pn, 3004 IEEE80211_CCMP_PN_LEN); 3005 } 3006 3007 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3008 } 3009 3010 /* in HW restart reuse the index, otherwise request a new one */ 3011 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3012 key_offset = key->hw_key_idx; 3013 else 3014 key_offset = STA_KEY_IDX_INVALID; 3015 3016 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3017 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3018 if (ret) { 3019 IWL_WARN(mvm, "set key failed\n"); 3020 /* 3021 * can't add key for RX, but we don't need it 3022 * in the device for TX so still return 0 3023 */ 3024 key->hw_key_idx = STA_KEY_IDX_INVALID; 3025 ret = 0; 3026 } 3027 3028 break; 3029 case DISABLE_KEY: 3030 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3031 ret = 0; 3032 break; 3033 } 3034 3035 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3036 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3037 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3038 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3039 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3040 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3041 ptk_pn = rcu_dereference_protected( 3042 mvmsta->ptk_pn[keyidx], 3043 lockdep_is_held(&mvm->mutex)); 3044 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3045 if (ptk_pn) 3046 kfree_rcu(ptk_pn, rcu_head); 3047 } 3048 3049 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3050 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3051 break; 3052 default: 3053 ret = -EINVAL; 3054 } 3055 3056 mutex_unlock(&mvm->mutex); 3057 return ret; 3058 } 3059 3060 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3061 struct ieee80211_vif *vif, 3062 struct ieee80211_key_conf *keyconf, 3063 struct ieee80211_sta *sta, 3064 u32 iv32, u16 *phase1key) 3065 { 3066 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3067 3068 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3069 return; 3070 3071 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3072 } 3073 3074 3075 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3076 struct iwl_rx_packet *pkt, void *data) 3077 { 3078 struct iwl_mvm *mvm = 3079 container_of(notif_wait, struct iwl_mvm, notif_wait); 3080 struct iwl_hs20_roc_res *resp; 3081 int resp_len = iwl_rx_packet_payload_len(pkt); 3082 struct iwl_mvm_time_event_data *te_data = data; 3083 3084 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3085 return true; 3086 3087 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3088 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3089 return true; 3090 } 3091 3092 resp = (void *)pkt->data; 3093 3094 IWL_DEBUG_TE(mvm, 3095 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 3096 resp->status, resp->event_unique_id); 3097 3098 te_data->uid = le32_to_cpu(resp->event_unique_id); 3099 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3100 te_data->uid); 3101 3102 spin_lock_bh(&mvm->time_event_lock); 3103 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3104 spin_unlock_bh(&mvm->time_event_lock); 3105 3106 return true; 3107 } 3108 3109 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3110 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3111 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3112 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3113 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3114 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3115 struct ieee80211_channel *channel, 3116 struct ieee80211_vif *vif, 3117 int duration) 3118 { 3119 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3120 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3121 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3122 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3123 struct iwl_notification_wait wait_time_event; 3124 u32 dtim_interval = vif->bss_conf.dtim_period * 3125 vif->bss_conf.beacon_int; 3126 u32 req_dur, delay; 3127 struct iwl_hs20_roc_req aux_roc_req = { 3128 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3129 .id_and_color = 3130 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3131 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3132 /* Set the channel info data */ 3133 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3134 PHY_BAND_24 : PHY_BAND_5, 3135 .channel_info.channel = channel->hw_value, 3136 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3137 /* Set the time and duration */ 3138 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3139 }; 3140 3141 delay = AUX_ROC_MIN_DELAY; 3142 req_dur = MSEC_TO_TU(duration); 3143 3144 /* 3145 * If we are associated we want the delay time to be at least one 3146 * dtim interval so that the FW can wait until after the DTIM and 3147 * then start the time event, this will potentially allow us to 3148 * remain off-channel for the max duration. 3149 * Since we want to use almost a whole dtim interval we would also 3150 * like the delay to be for 2-3 dtim intervals, in case there are 3151 * other time events with higher priority. 3152 */ 3153 if (vif->bss_conf.assoc) { 3154 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3155 /* We cannot remain off-channel longer than the DTIM interval */ 3156 if (dtim_interval <= req_dur) { 3157 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3158 if (req_dur <= AUX_ROC_MIN_DURATION) 3159 req_dur = dtim_interval - 3160 AUX_ROC_MIN_SAFETY_BUFFER; 3161 } 3162 } 3163 3164 aux_roc_req.duration = cpu_to_le32(req_dur); 3165 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3166 3167 IWL_DEBUG_TE(mvm, 3168 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3169 channel->hw_value, req_dur, duration, delay, 3170 dtim_interval); 3171 /* Set the node address */ 3172 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3173 3174 lockdep_assert_held(&mvm->mutex); 3175 3176 spin_lock_bh(&mvm->time_event_lock); 3177 3178 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3179 spin_unlock_bh(&mvm->time_event_lock); 3180 return -EIO; 3181 } 3182 3183 te_data->vif = vif; 3184 te_data->duration = duration; 3185 te_data->id = HOT_SPOT_CMD; 3186 3187 spin_unlock_bh(&mvm->time_event_lock); 3188 3189 /* 3190 * Use a notification wait, which really just processes the 3191 * command response and doesn't wait for anything, in order 3192 * to be able to process the response and get the UID inside 3193 * the RX path. Using CMD_WANT_SKB doesn't work because it 3194 * stores the buffer and then wakes up this thread, by which 3195 * time another notification (that the time event started) 3196 * might already be processed unsuccessfully. 3197 */ 3198 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3199 time_event_response, 3200 ARRAY_SIZE(time_event_response), 3201 iwl_mvm_rx_aux_roc, te_data); 3202 3203 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3204 &aux_roc_req); 3205 3206 if (res) { 3207 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3208 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3209 goto out_clear_te; 3210 } 3211 3212 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3213 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3214 /* should never fail */ 3215 WARN_ON_ONCE(res); 3216 3217 if (res) { 3218 out_clear_te: 3219 spin_lock_bh(&mvm->time_event_lock); 3220 iwl_mvm_te_clear_data(mvm, te_data); 3221 spin_unlock_bh(&mvm->time_event_lock); 3222 } 3223 3224 return res; 3225 } 3226 3227 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3228 struct ieee80211_vif *vif, 3229 struct ieee80211_channel *channel, 3230 int duration, 3231 enum ieee80211_roc_type type) 3232 { 3233 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3234 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3235 struct cfg80211_chan_def chandef; 3236 struct iwl_mvm_phy_ctxt *phy_ctxt; 3237 int ret, i; 3238 3239 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3240 duration, type); 3241 3242 /* 3243 * Flush the done work, just in case it's still pending, so that 3244 * the work it does can complete and we can accept new frames. 3245 */ 3246 flush_work(&mvm->roc_done_wk); 3247 3248 mutex_lock(&mvm->mutex); 3249 3250 switch (vif->type) { 3251 case NL80211_IFTYPE_STATION: 3252 if (fw_has_capa(&mvm->fw->ucode_capa, 3253 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3254 /* Use aux roc framework (HS20) */ 3255 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3256 vif, duration); 3257 goto out_unlock; 3258 } 3259 IWL_ERR(mvm, "hotspot not supported\n"); 3260 ret = -EINVAL; 3261 goto out_unlock; 3262 case NL80211_IFTYPE_P2P_DEVICE: 3263 /* handle below */ 3264 break; 3265 default: 3266 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3267 ret = -EINVAL; 3268 goto out_unlock; 3269 } 3270 3271 for (i = 0; i < NUM_PHY_CTX; i++) { 3272 phy_ctxt = &mvm->phy_ctxts[i]; 3273 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3274 continue; 3275 3276 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3277 /* 3278 * Unbind the P2P_DEVICE from the current PHY context, 3279 * and if the PHY context is not used remove it. 3280 */ 3281 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3282 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3283 goto out_unlock; 3284 3285 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3286 3287 /* Bind the P2P_DEVICE to the current PHY Context */ 3288 mvmvif->phy_ctxt = phy_ctxt; 3289 3290 ret = iwl_mvm_binding_add_vif(mvm, vif); 3291 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3292 goto out_unlock; 3293 3294 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3295 goto schedule_time_event; 3296 } 3297 } 3298 3299 /* Need to update the PHY context only if the ROC channel changed */ 3300 if (channel == mvmvif->phy_ctxt->channel) 3301 goto schedule_time_event; 3302 3303 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3304 3305 /* 3306 * Change the PHY context configuration as it is currently referenced 3307 * only by the P2P Device MAC 3308 */ 3309 if (mvmvif->phy_ctxt->ref == 1) { 3310 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3311 &chandef, 1, 1); 3312 if (ret) 3313 goto out_unlock; 3314 } else { 3315 /* 3316 * The PHY context is shared with other MACs. Need to remove the 3317 * P2P Device from the binding, allocate an new PHY context and 3318 * create a new binding 3319 */ 3320 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3321 if (!phy_ctxt) { 3322 ret = -ENOSPC; 3323 goto out_unlock; 3324 } 3325 3326 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3327 1, 1); 3328 if (ret) { 3329 IWL_ERR(mvm, "Failed to change PHY context\n"); 3330 goto out_unlock; 3331 } 3332 3333 /* Unbind the P2P_DEVICE from the current PHY context */ 3334 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3335 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3336 goto out_unlock; 3337 3338 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3339 3340 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3341 mvmvif->phy_ctxt = phy_ctxt; 3342 3343 ret = iwl_mvm_binding_add_vif(mvm, vif); 3344 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3345 goto out_unlock; 3346 3347 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3348 } 3349 3350 schedule_time_event: 3351 /* Schedule the time events */ 3352 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3353 3354 out_unlock: 3355 mutex_unlock(&mvm->mutex); 3356 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3357 return ret; 3358 } 3359 3360 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3361 { 3362 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3363 3364 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3365 3366 mutex_lock(&mvm->mutex); 3367 iwl_mvm_stop_roc(mvm); 3368 mutex_unlock(&mvm->mutex); 3369 3370 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3371 return 0; 3372 } 3373 3374 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3375 struct ieee80211_chanctx_conf *ctx) 3376 { 3377 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3378 struct iwl_mvm_phy_ctxt *phy_ctxt; 3379 int ret; 3380 3381 lockdep_assert_held(&mvm->mutex); 3382 3383 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3384 3385 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3386 if (!phy_ctxt) { 3387 ret = -ENOSPC; 3388 goto out; 3389 } 3390 3391 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3392 ctx->rx_chains_static, 3393 ctx->rx_chains_dynamic); 3394 if (ret) { 3395 IWL_ERR(mvm, "Failed to add PHY context\n"); 3396 goto out; 3397 } 3398 3399 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3400 *phy_ctxt_id = phy_ctxt->id; 3401 out: 3402 return ret; 3403 } 3404 3405 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3406 struct ieee80211_chanctx_conf *ctx) 3407 { 3408 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3409 int ret; 3410 3411 mutex_lock(&mvm->mutex); 3412 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3413 mutex_unlock(&mvm->mutex); 3414 3415 return ret; 3416 } 3417 3418 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3419 struct ieee80211_chanctx_conf *ctx) 3420 { 3421 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3422 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3423 3424 lockdep_assert_held(&mvm->mutex); 3425 3426 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3427 } 3428 3429 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3430 struct ieee80211_chanctx_conf *ctx) 3431 { 3432 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3433 3434 mutex_lock(&mvm->mutex); 3435 __iwl_mvm_remove_chanctx(mvm, ctx); 3436 mutex_unlock(&mvm->mutex); 3437 } 3438 3439 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3440 struct ieee80211_chanctx_conf *ctx, 3441 u32 changed) 3442 { 3443 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3444 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3445 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3446 3447 if (WARN_ONCE((phy_ctxt->ref > 1) && 3448 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3449 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3450 IEEE80211_CHANCTX_CHANGE_RADAR | 3451 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3452 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3453 phy_ctxt->ref, changed)) 3454 return; 3455 3456 mutex_lock(&mvm->mutex); 3457 3458 /* we are only changing the min_width, may be a noop */ 3459 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 3460 if (phy_ctxt->width == ctx->min_def.width) 3461 goto out_unlock; 3462 3463 /* we are just toggling between 20_NOHT and 20 */ 3464 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 3465 ctx->min_def.width <= NL80211_CHAN_WIDTH_20) 3466 goto out_unlock; 3467 } 3468 3469 iwl_mvm_bt_coex_vif_change(mvm); 3470 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3471 ctx->rx_chains_static, 3472 ctx->rx_chains_dynamic); 3473 3474 out_unlock: 3475 mutex_unlock(&mvm->mutex); 3476 } 3477 3478 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3479 struct ieee80211_vif *vif, 3480 struct ieee80211_chanctx_conf *ctx, 3481 bool switching_chanctx) 3482 { 3483 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3484 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3485 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3486 int ret; 3487 3488 lockdep_assert_held(&mvm->mutex); 3489 3490 mvmvif->phy_ctxt = phy_ctxt; 3491 3492 switch (vif->type) { 3493 case NL80211_IFTYPE_AP: 3494 /* only needed if we're switching chanctx (i.e. during CSA) */ 3495 if (switching_chanctx) { 3496 mvmvif->ap_ibss_active = true; 3497 break; 3498 } 3499 case NL80211_IFTYPE_ADHOC: 3500 /* 3501 * The AP binding flow is handled as part of the start_ap flow 3502 * (in bss_info_changed), similarly for IBSS. 3503 */ 3504 ret = 0; 3505 goto out; 3506 case NL80211_IFTYPE_STATION: 3507 mvmvif->csa_bcn_pending = false; 3508 break; 3509 case NL80211_IFTYPE_MONITOR: 3510 /* always disable PS when a monitor interface is active */ 3511 mvmvif->ps_disabled = true; 3512 break; 3513 default: 3514 ret = -EINVAL; 3515 goto out; 3516 } 3517 3518 ret = iwl_mvm_binding_add_vif(mvm, vif); 3519 if (ret) 3520 goto out; 3521 3522 /* 3523 * Power state must be updated before quotas, 3524 * otherwise fw will complain. 3525 */ 3526 iwl_mvm_power_update_mac(mvm); 3527 3528 /* Setting the quota at this stage is only required for monitor 3529 * interfaces. For the other types, the bss_info changed flow 3530 * will handle quota settings. 3531 */ 3532 if (vif->type == NL80211_IFTYPE_MONITOR) { 3533 mvmvif->monitor_active = true; 3534 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3535 if (ret) 3536 goto out_remove_binding; 3537 3538 ret = iwl_mvm_add_snif_sta(mvm, vif); 3539 if (ret) 3540 goto out_remove_binding; 3541 3542 } 3543 3544 /* Handle binding during CSA */ 3545 if (vif->type == NL80211_IFTYPE_AP) { 3546 iwl_mvm_update_quotas(mvm, false, NULL); 3547 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3548 } 3549 3550 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3551 u32 duration = 3 * vif->bss_conf.beacon_int; 3552 3553 /* iwl_mvm_protect_session() reads directly from the 3554 * device (the system time), so make sure it is 3555 * available. 3556 */ 3557 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3558 if (ret) 3559 goto out_remove_binding; 3560 3561 /* Protect the session to make sure we hear the first 3562 * beacon on the new channel. 3563 */ 3564 mvmvif->csa_bcn_pending = true; 3565 iwl_mvm_protect_session(mvm, vif, duration, duration, 3566 vif->bss_conf.beacon_int / 2, 3567 true); 3568 3569 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3570 3571 iwl_mvm_update_quotas(mvm, false, NULL); 3572 } 3573 3574 goto out; 3575 3576 out_remove_binding: 3577 iwl_mvm_binding_remove_vif(mvm, vif); 3578 iwl_mvm_power_update_mac(mvm); 3579 out: 3580 if (ret) 3581 mvmvif->phy_ctxt = NULL; 3582 return ret; 3583 } 3584 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3585 struct ieee80211_vif *vif, 3586 struct ieee80211_chanctx_conf *ctx) 3587 { 3588 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3589 int ret; 3590 3591 mutex_lock(&mvm->mutex); 3592 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3593 mutex_unlock(&mvm->mutex); 3594 3595 return ret; 3596 } 3597 3598 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3599 struct ieee80211_vif *vif, 3600 struct ieee80211_chanctx_conf *ctx, 3601 bool switching_chanctx) 3602 { 3603 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3604 struct ieee80211_vif *disabled_vif = NULL; 3605 3606 lockdep_assert_held(&mvm->mutex); 3607 3608 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3609 3610 switch (vif->type) { 3611 case NL80211_IFTYPE_ADHOC: 3612 goto out; 3613 case NL80211_IFTYPE_MONITOR: 3614 mvmvif->monitor_active = false; 3615 mvmvif->ps_disabled = false; 3616 iwl_mvm_rm_snif_sta(mvm, vif); 3617 break; 3618 case NL80211_IFTYPE_AP: 3619 /* This part is triggered only during CSA */ 3620 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3621 goto out; 3622 3623 mvmvif->csa_countdown = false; 3624 3625 /* Set CS bit on all the stations */ 3626 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3627 3628 /* Save blocked iface, the timeout is set on the next beacon */ 3629 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3630 3631 mvmvif->ap_ibss_active = false; 3632 break; 3633 case NL80211_IFTYPE_STATION: 3634 if (!switching_chanctx) 3635 break; 3636 3637 disabled_vif = vif; 3638 3639 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3640 break; 3641 default: 3642 break; 3643 } 3644 3645 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3646 iwl_mvm_binding_remove_vif(mvm, vif); 3647 3648 out: 3649 mvmvif->phy_ctxt = NULL; 3650 iwl_mvm_power_update_mac(mvm); 3651 } 3652 3653 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3654 struct ieee80211_vif *vif, 3655 struct ieee80211_chanctx_conf *ctx) 3656 { 3657 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3658 3659 mutex_lock(&mvm->mutex); 3660 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3661 mutex_unlock(&mvm->mutex); 3662 } 3663 3664 static int 3665 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3666 struct ieee80211_vif_chanctx_switch *vifs) 3667 { 3668 int ret; 3669 3670 mutex_lock(&mvm->mutex); 3671 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3672 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3673 3674 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3675 if (ret) { 3676 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3677 goto out_reassign; 3678 } 3679 3680 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3681 true); 3682 if (ret) { 3683 IWL_ERR(mvm, 3684 "failed to assign new_ctx during channel switch\n"); 3685 goto out_remove; 3686 } 3687 3688 /* we don't support TDLS during DCM - can be caused by channel switch */ 3689 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3690 iwl_mvm_teardown_tdls_peers(mvm); 3691 3692 goto out; 3693 3694 out_remove: 3695 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3696 3697 out_reassign: 3698 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3699 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3700 goto out_restart; 3701 } 3702 3703 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3704 true)) { 3705 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3706 goto out_restart; 3707 } 3708 3709 goto out; 3710 3711 out_restart: 3712 /* things keep failing, better restart the hw */ 3713 iwl_mvm_nic_restart(mvm, false); 3714 3715 out: 3716 mutex_unlock(&mvm->mutex); 3717 3718 return ret; 3719 } 3720 3721 static int 3722 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 3723 struct ieee80211_vif_chanctx_switch *vifs) 3724 { 3725 int ret; 3726 3727 mutex_lock(&mvm->mutex); 3728 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3729 3730 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3731 true); 3732 if (ret) { 3733 IWL_ERR(mvm, 3734 "failed to assign new_ctx during channel switch\n"); 3735 goto out_reassign; 3736 } 3737 3738 goto out; 3739 3740 out_reassign: 3741 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3742 true)) { 3743 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3744 goto out_restart; 3745 } 3746 3747 goto out; 3748 3749 out_restart: 3750 /* things keep failing, better restart the hw */ 3751 iwl_mvm_nic_restart(mvm, false); 3752 3753 out: 3754 mutex_unlock(&mvm->mutex); 3755 3756 return ret; 3757 } 3758 3759 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 3760 struct ieee80211_vif_chanctx_switch *vifs, 3761 int n_vifs, 3762 enum ieee80211_chanctx_switch_mode mode) 3763 { 3764 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3765 int ret; 3766 3767 /* we only support a single-vif right now */ 3768 if (n_vifs > 1) 3769 return -EOPNOTSUPP; 3770 3771 switch (mode) { 3772 case CHANCTX_SWMODE_SWAP_CONTEXTS: 3773 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 3774 break; 3775 case CHANCTX_SWMODE_REASSIGN_VIF: 3776 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 3777 break; 3778 default: 3779 ret = -EOPNOTSUPP; 3780 break; 3781 } 3782 3783 return ret; 3784 } 3785 3786 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 3787 { 3788 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3789 3790 return mvm->ibss_manager; 3791 } 3792 3793 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 3794 struct ieee80211_sta *sta, 3795 bool set) 3796 { 3797 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3798 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3799 3800 if (!mvm_sta || !mvm_sta->vif) { 3801 IWL_ERR(mvm, "Station is not associated to a vif\n"); 3802 return -EINVAL; 3803 } 3804 3805 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 3806 } 3807 3808 #ifdef CONFIG_NL80211_TESTMODE 3809 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 3810 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 3811 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 3812 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 3813 }; 3814 3815 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 3816 struct ieee80211_vif *vif, 3817 void *data, int len) 3818 { 3819 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 3820 int err; 3821 u32 noa_duration; 3822 3823 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy, 3824 NULL); 3825 if (err) 3826 return err; 3827 3828 if (!tb[IWL_MVM_TM_ATTR_CMD]) 3829 return -EINVAL; 3830 3831 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 3832 case IWL_MVM_TM_CMD_SET_NOA: 3833 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 3834 !vif->bss_conf.enable_beacon || 3835 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 3836 return -EINVAL; 3837 3838 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 3839 if (noa_duration >= vif->bss_conf.beacon_int) 3840 return -EINVAL; 3841 3842 mvm->noa_duration = noa_duration; 3843 mvm->noa_vif = vif; 3844 3845 return iwl_mvm_update_quotas(mvm, true, NULL); 3846 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 3847 /* must be associated client vif - ignore authorized */ 3848 if (!vif || vif->type != NL80211_IFTYPE_STATION || 3849 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 3850 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 3851 return -EINVAL; 3852 3853 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 3854 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3855 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3856 } 3857 3858 return -EOPNOTSUPP; 3859 } 3860 3861 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 3862 struct ieee80211_vif *vif, 3863 void *data, int len) 3864 { 3865 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3866 int err; 3867 3868 mutex_lock(&mvm->mutex); 3869 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 3870 mutex_unlock(&mvm->mutex); 3871 3872 return err; 3873 } 3874 #endif 3875 3876 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 3877 struct ieee80211_vif *vif, 3878 struct ieee80211_channel_switch *chsw) 3879 { 3880 /* By implementing this operation, we prevent mac80211 from 3881 * starting its own channel switch timer, so that we can call 3882 * ieee80211_chswitch_done() ourselves at the right time 3883 * (which is when the absence time event starts). 3884 */ 3885 3886 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 3887 "dummy channel switch op\n"); 3888 } 3889 3890 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 3891 struct ieee80211_vif *vif, 3892 struct ieee80211_channel_switch *chsw) 3893 { 3894 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3895 struct ieee80211_vif *csa_vif; 3896 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3897 u32 apply_time; 3898 int ret; 3899 3900 mutex_lock(&mvm->mutex); 3901 3902 mvmvif->csa_failed = false; 3903 3904 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 3905 chsw->chandef.center_freq1); 3906 3907 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 3908 ieee80211_vif_to_wdev(vif), 3909 FW_DBG_TRIGGER_CHANNEL_SWITCH); 3910 3911 switch (vif->type) { 3912 case NL80211_IFTYPE_AP: 3913 csa_vif = 3914 rcu_dereference_protected(mvm->csa_vif, 3915 lockdep_is_held(&mvm->mutex)); 3916 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 3917 "Another CSA is already in progress")) { 3918 ret = -EBUSY; 3919 goto out_unlock; 3920 } 3921 3922 /* we still didn't unblock tx. prevent new CS meanwhile */ 3923 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 3924 lockdep_is_held(&mvm->mutex))) { 3925 ret = -EBUSY; 3926 goto out_unlock; 3927 } 3928 3929 rcu_assign_pointer(mvm->csa_vif, vif); 3930 3931 if (WARN_ONCE(mvmvif->csa_countdown, 3932 "Previous CSA countdown didn't complete")) { 3933 ret = -EBUSY; 3934 goto out_unlock; 3935 } 3936 3937 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 3938 3939 break; 3940 case NL80211_IFTYPE_STATION: 3941 /* Schedule the time event to a bit before beacon 1, 3942 * to make sure we're in the new channel when the 3943 * GO/AP arrives. In case count <= 1 immediately schedule the 3944 * TE (this might result with some packet loss or connection 3945 * loss). 3946 */ 3947 if (chsw->count <= 1) 3948 apply_time = 0; 3949 else 3950 apply_time = chsw->device_timestamp + 3951 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 3952 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 3953 3954 if (chsw->block_tx) 3955 iwl_mvm_csa_client_absent(mvm, vif); 3956 3957 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 3958 apply_time); 3959 if (mvmvif->bf_data.bf_enabled) { 3960 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3961 if (ret) 3962 goto out_unlock; 3963 } 3964 3965 break; 3966 default: 3967 break; 3968 } 3969 3970 mvmvif->ps_disabled = true; 3971 3972 ret = iwl_mvm_power_update_ps(mvm); 3973 if (ret) 3974 goto out_unlock; 3975 3976 /* we won't be on this channel any longer */ 3977 iwl_mvm_teardown_tdls_peers(mvm); 3978 3979 out_unlock: 3980 mutex_unlock(&mvm->mutex); 3981 3982 return ret; 3983 } 3984 3985 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 3986 struct ieee80211_vif *vif) 3987 { 3988 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3989 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3990 int ret; 3991 3992 mutex_lock(&mvm->mutex); 3993 3994 if (mvmvif->csa_failed) { 3995 mvmvif->csa_failed = false; 3996 ret = -EIO; 3997 goto out_unlock; 3998 } 3999 4000 if (vif->type == NL80211_IFTYPE_STATION) { 4001 struct iwl_mvm_sta *mvmsta; 4002 4003 mvmvif->csa_bcn_pending = false; 4004 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 4005 mvmvif->ap_sta_id); 4006 4007 if (WARN_ON(!mvmsta)) { 4008 ret = -EIO; 4009 goto out_unlock; 4010 } 4011 4012 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 4013 4014 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4015 4016 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4017 if (ret) 4018 goto out_unlock; 4019 4020 iwl_mvm_stop_session_protection(mvm, vif); 4021 } 4022 4023 mvmvif->ps_disabled = false; 4024 4025 ret = iwl_mvm_power_update_ps(mvm); 4026 4027 out_unlock: 4028 mutex_unlock(&mvm->mutex); 4029 4030 return ret; 4031 } 4032 4033 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4034 { 4035 int i; 4036 4037 if (!iwl_mvm_has_new_tx_api(mvm)) { 4038 if (drop) { 4039 mutex_lock(&mvm->mutex); 4040 iwl_mvm_flush_tx_path(mvm, 4041 iwl_mvm_flushable_queues(mvm) & queues, 0); 4042 mutex_unlock(&mvm->mutex); 4043 } else { 4044 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4045 } 4046 return; 4047 } 4048 4049 mutex_lock(&mvm->mutex); 4050 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4051 struct ieee80211_sta *sta; 4052 4053 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4054 lockdep_is_held(&mvm->mutex)); 4055 if (IS_ERR_OR_NULL(sta)) 4056 continue; 4057 4058 if (drop) 4059 iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0); 4060 else 4061 iwl_mvm_wait_sta_queues_empty(mvm, 4062 iwl_mvm_sta_from_mac80211(sta)); 4063 } 4064 mutex_unlock(&mvm->mutex); 4065 } 4066 4067 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4068 struct ieee80211_vif *vif, u32 queues, bool drop) 4069 { 4070 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4071 struct iwl_mvm_vif *mvmvif; 4072 struct iwl_mvm_sta *mvmsta; 4073 struct ieee80211_sta *sta; 4074 int i; 4075 u32 msk = 0; 4076 4077 if (!vif) { 4078 iwl_mvm_flush_no_vif(mvm, queues, drop); 4079 return; 4080 } 4081 4082 if (vif->type != NL80211_IFTYPE_STATION) 4083 return; 4084 4085 /* Make sure we're done with the deferred traffic before flushing */ 4086 flush_work(&mvm->add_stream_wk); 4087 4088 mutex_lock(&mvm->mutex); 4089 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4090 4091 /* flush the AP-station and all TDLS peers */ 4092 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4093 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4094 lockdep_is_held(&mvm->mutex)); 4095 if (IS_ERR_OR_NULL(sta)) 4096 continue; 4097 4098 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4099 if (mvmsta->vif != vif) 4100 continue; 4101 4102 /* make sure only TDLS peers or the AP are flushed */ 4103 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4104 4105 if (drop) { 4106 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4107 IWL_ERR(mvm, "flush request fail\n"); 4108 } else { 4109 msk |= mvmsta->tfd_queue_msk; 4110 if (iwl_mvm_has_new_tx_api(mvm)) 4111 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4112 } 4113 } 4114 4115 mutex_unlock(&mvm->mutex); 4116 4117 /* this can take a while, and we may need/want other operations 4118 * to succeed while doing this, so do it without the mutex held 4119 */ 4120 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4121 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4122 } 4123 4124 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4125 struct survey_info *survey) 4126 { 4127 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4128 int ret; 4129 4130 memset(survey, 0, sizeof(*survey)); 4131 4132 /* only support global statistics right now */ 4133 if (idx != 0) 4134 return -ENOENT; 4135 4136 if (!fw_has_capa(&mvm->fw->ucode_capa, 4137 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4138 return -ENOENT; 4139 4140 mutex_lock(&mvm->mutex); 4141 4142 if (iwl_mvm_firmware_running(mvm)) { 4143 ret = iwl_mvm_request_statistics(mvm, false); 4144 if (ret) 4145 goto out; 4146 } 4147 4148 survey->filled = SURVEY_INFO_TIME | 4149 SURVEY_INFO_TIME_RX | 4150 SURVEY_INFO_TIME_TX | 4151 SURVEY_INFO_TIME_SCAN; 4152 survey->time = mvm->accu_radio_stats.on_time_rf + 4153 mvm->radio_stats.on_time_rf; 4154 do_div(survey->time, USEC_PER_MSEC); 4155 4156 survey->time_rx = mvm->accu_radio_stats.rx_time + 4157 mvm->radio_stats.rx_time; 4158 do_div(survey->time_rx, USEC_PER_MSEC); 4159 4160 survey->time_tx = mvm->accu_radio_stats.tx_time + 4161 mvm->radio_stats.tx_time; 4162 do_div(survey->time_tx, USEC_PER_MSEC); 4163 4164 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4165 mvm->radio_stats.on_time_scan; 4166 do_div(survey->time_scan, USEC_PER_MSEC); 4167 4168 ret = 0; 4169 out: 4170 mutex_unlock(&mvm->mutex); 4171 return ret; 4172 } 4173 4174 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4175 struct ieee80211_vif *vif, 4176 struct ieee80211_sta *sta, 4177 struct station_info *sinfo) 4178 { 4179 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4180 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4181 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4182 4183 if (mvmsta->avg_energy) { 4184 sinfo->signal_avg = mvmsta->avg_energy; 4185 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); 4186 } 4187 4188 if (!fw_has_capa(&mvm->fw->ucode_capa, 4189 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4190 return; 4191 4192 /* if beacon filtering isn't on mac80211 does it anyway */ 4193 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4194 return; 4195 4196 if (!vif->bss_conf.assoc) 4197 return; 4198 4199 mutex_lock(&mvm->mutex); 4200 4201 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4202 goto unlock; 4203 4204 if (iwl_mvm_request_statistics(mvm, false)) 4205 goto unlock; 4206 4207 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4208 mvmvif->beacon_stats.accu_num_beacons; 4209 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX); 4210 if (mvmvif->beacon_stats.avg_signal) { 4211 /* firmware only reports a value after RXing a few beacons */ 4212 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4213 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4214 } 4215 unlock: 4216 mutex_unlock(&mvm->mutex); 4217 } 4218 4219 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4220 struct ieee80211_vif *vif, 4221 const struct ieee80211_event *event) 4222 { 4223 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4224 do { \ 4225 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4226 break; \ 4227 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4228 } while (0) 4229 4230 struct iwl_fw_dbg_trigger_tlv *trig; 4231 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4232 4233 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 4234 return; 4235 4236 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 4237 trig_mlme = (void *)trig->data; 4238 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4239 ieee80211_vif_to_wdev(vif), trig)) 4240 return; 4241 4242 if (event->u.mlme.data == ASSOC_EVENT) { 4243 if (event->u.mlme.status == MLME_DENIED) 4244 CHECK_MLME_TRIGGER(stop_assoc_denied, 4245 "DENIED ASSOC: reason %d", 4246 event->u.mlme.reason); 4247 else if (event->u.mlme.status == MLME_TIMEOUT) 4248 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4249 "ASSOC TIMEOUT"); 4250 } else if (event->u.mlme.data == AUTH_EVENT) { 4251 if (event->u.mlme.status == MLME_DENIED) 4252 CHECK_MLME_TRIGGER(stop_auth_denied, 4253 "DENIED AUTH: reason %d", 4254 event->u.mlme.reason); 4255 else if (event->u.mlme.status == MLME_TIMEOUT) 4256 CHECK_MLME_TRIGGER(stop_auth_timeout, 4257 "AUTH TIMEOUT"); 4258 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4259 CHECK_MLME_TRIGGER(stop_rx_deauth, 4260 "DEAUTH RX %d", event->u.mlme.reason); 4261 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4262 CHECK_MLME_TRIGGER(stop_tx_deauth, 4263 "DEAUTH TX %d", event->u.mlme.reason); 4264 } 4265 #undef CHECK_MLME_TRIGGER 4266 } 4267 4268 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4269 struct ieee80211_vif *vif, 4270 const struct ieee80211_event *event) 4271 { 4272 struct iwl_fw_dbg_trigger_tlv *trig; 4273 struct iwl_fw_dbg_trigger_ba *ba_trig; 4274 4275 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4276 return; 4277 4278 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4279 ba_trig = (void *)trig->data; 4280 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4281 ieee80211_vif_to_wdev(vif), trig)) 4282 return; 4283 4284 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4285 return; 4286 4287 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4288 "BAR received from %pM, tid %d, ssn %d", 4289 event->u.ba.sta->addr, event->u.ba.tid, 4290 event->u.ba.ssn); 4291 } 4292 4293 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4294 struct ieee80211_vif *vif, 4295 const struct ieee80211_event *event) 4296 { 4297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4298 4299 switch (event->type) { 4300 case MLME_EVENT: 4301 iwl_mvm_event_mlme_callback(mvm, vif, event); 4302 break; 4303 case BAR_RX_EVENT: 4304 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4305 break; 4306 case BA_FRAME_TIMEOUT: 4307 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 4308 event->u.ba.tid); 4309 break; 4310 default: 4311 break; 4312 } 4313 } 4314 4315 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4316 struct iwl_mvm_internal_rxq_notif *notif, 4317 u32 size) 4318 { 4319 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4320 int ret; 4321 4322 lockdep_assert_held(&mvm->mutex); 4323 4324 if (!iwl_mvm_has_new_rx_api(mvm)) 4325 return; 4326 4327 notif->cookie = mvm->queue_sync_cookie; 4328 4329 if (notif->sync) 4330 atomic_set(&mvm->queue_sync_counter, 4331 mvm->trans->num_rx_queues); 4332 4333 /* TODO - remove this when we have RXQ config API */ 4334 if (mvm->trans->cfg->device_family == IWL_DEVICE_FAMILY_22000) { 4335 qmask = BIT(0); 4336 if (notif->sync) 4337 atomic_set(&mvm->queue_sync_counter, 1); 4338 } 4339 4340 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4341 if (ret) { 4342 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4343 goto out; 4344 } 4345 4346 if (notif->sync) { 4347 ret = wait_event_timeout(mvm->rx_sync_waitq, 4348 atomic_read(&mvm->queue_sync_counter) == 0 || 4349 iwl_mvm_is_radio_killed(mvm), 4350 HZ); 4351 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 4352 } 4353 4354 out: 4355 atomic_set(&mvm->queue_sync_counter, 0); 4356 mvm->queue_sync_cookie++; 4357 } 4358 4359 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4360 { 4361 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4362 struct iwl_mvm_internal_rxq_notif data = { 4363 .type = IWL_MVM_RXQ_EMPTY, 4364 .sync = 1, 4365 }; 4366 4367 mutex_lock(&mvm->mutex); 4368 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4369 mutex_unlock(&mvm->mutex); 4370 } 4371 4372 const struct ieee80211_ops iwl_mvm_hw_ops = { 4373 .tx = iwl_mvm_mac_tx, 4374 .ampdu_action = iwl_mvm_mac_ampdu_action, 4375 .start = iwl_mvm_mac_start, 4376 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4377 .stop = iwl_mvm_mac_stop, 4378 .add_interface = iwl_mvm_mac_add_interface, 4379 .remove_interface = iwl_mvm_mac_remove_interface, 4380 .config = iwl_mvm_mac_config, 4381 .prepare_multicast = iwl_mvm_prepare_multicast, 4382 .configure_filter = iwl_mvm_configure_filter, 4383 .config_iface_filter = iwl_mvm_config_iface_filter, 4384 .bss_info_changed = iwl_mvm_bss_info_changed, 4385 .hw_scan = iwl_mvm_mac_hw_scan, 4386 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4387 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4388 .sta_state = iwl_mvm_mac_sta_state, 4389 .sta_notify = iwl_mvm_mac_sta_notify, 4390 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4391 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4392 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4393 .sta_rc_update = iwl_mvm_sta_rc_update, 4394 .conf_tx = iwl_mvm_mac_conf_tx, 4395 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4396 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4397 .flush = iwl_mvm_mac_flush, 4398 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4399 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4400 .set_key = iwl_mvm_mac_set_key, 4401 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4402 .remain_on_channel = iwl_mvm_roc, 4403 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4404 .add_chanctx = iwl_mvm_add_chanctx, 4405 .remove_chanctx = iwl_mvm_remove_chanctx, 4406 .change_chanctx = iwl_mvm_change_chanctx, 4407 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4408 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4409 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4410 4411 .start_ap = iwl_mvm_start_ap_ibss, 4412 .stop_ap = iwl_mvm_stop_ap_ibss, 4413 .join_ibss = iwl_mvm_start_ap_ibss, 4414 .leave_ibss = iwl_mvm_stop_ap_ibss, 4415 4416 .tx_last_beacon = iwl_mvm_tx_last_beacon, 4417 4418 .set_tim = iwl_mvm_set_tim, 4419 4420 .channel_switch = iwl_mvm_channel_switch, 4421 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4422 .post_channel_switch = iwl_mvm_post_channel_switch, 4423 4424 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4425 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4426 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4427 4428 .event_callback = iwl_mvm_mac_event_callback, 4429 4430 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4431 4432 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4433 4434 #ifdef CONFIG_PM_SLEEP 4435 /* look at d3.c */ 4436 .suspend = iwl_mvm_suspend, 4437 .resume = iwl_mvm_resume, 4438 .set_wakeup = iwl_mvm_set_wakeup, 4439 .set_rekey_data = iwl_mvm_set_rekey_data, 4440 #if IS_ENABLED(CONFIG_IPV6) 4441 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4442 #endif 4443 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4444 #endif 4445 .get_survey = iwl_mvm_mac_get_survey, 4446 .sta_statistics = iwl_mvm_mac_sta_statistics, 4447 #ifdef CONFIG_IWLWIFI_DEBUGFS 4448 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 4449 #endif 4450 }; 4451