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 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24 * USA 25 * 26 * The full GNU General Public License is included in this distribution 27 * in the file called COPYING. 28 * 29 * Contact Information: 30 * Intel Linux Wireless <linuxwifi@intel.com> 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32 * 33 * BSD LICENSE 34 * 35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 37 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 38 * All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 44 * * Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * * Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in 48 * the documentation and/or other materials provided with the 49 * distribution. 50 * * Neither the name Intel Corporation nor the names of its 51 * contributors may be used to endorse or promote products derived 52 * from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 * 66 *****************************************************************************/ 67 #include <linux/kernel.h> 68 #include <linux/slab.h> 69 #include <linux/skbuff.h> 70 #include <linux/netdevice.h> 71 #include <linux/etherdevice.h> 72 #include <linux/ip.h> 73 #include <linux/if_arp.h> 74 #include <linux/time.h> 75 #include <net/mac80211.h> 76 #include <net/ieee80211_radiotap.h> 77 #include <net/tcp.h> 78 79 #include "iwl-op-mode.h" 80 #include "iwl-io.h" 81 #include "mvm.h" 82 #include "sta.h" 83 #include "time-event.h" 84 #include "iwl-eeprom-parse.h" 85 #include "iwl-phy-db.h" 86 #include "testmode.h" 87 #include "fw/error-dump.h" 88 #include "iwl-prph.h" 89 #include "iwl-nvm-parse.h" 90 91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 92 { 93 .max = 1, 94 .types = BIT(NL80211_IFTYPE_STATION), 95 }, 96 { 97 .max = 1, 98 .types = BIT(NL80211_IFTYPE_AP) | 99 BIT(NL80211_IFTYPE_P2P_CLIENT) | 100 BIT(NL80211_IFTYPE_P2P_GO), 101 }, 102 { 103 .max = 1, 104 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 105 }, 106 }; 107 108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 109 { 110 .num_different_channels = 2, 111 .max_interfaces = 3, 112 .limits = iwl_mvm_limits, 113 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 114 }, 115 }; 116 117 #ifdef CONFIG_PM_SLEEP 118 static const struct nl80211_wowlan_tcp_data_token_feature 119 iwl_mvm_wowlan_tcp_token_feature = { 120 .min_len = 0, 121 .max_len = 255, 122 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS, 123 }; 124 125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = { 126 .tok = &iwl_mvm_wowlan_tcp_token_feature, 127 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN - 128 sizeof(struct ethhdr) - 129 sizeof(struct iphdr) - 130 sizeof(struct tcphdr), 131 .data_interval_max = 65535, /* __le16 in API */ 132 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN - 133 sizeof(struct ethhdr) - 134 sizeof(struct iphdr) - 135 sizeof(struct tcphdr), 136 .seq = true, 137 }; 138 #endif 139 140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 141 /* 142 * Use the reserved field to indicate magic values. 143 * these values will only be used internally by the driver, 144 * and won't make it to the fw (reserved will be 0). 145 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 146 * be the vif's ip address. in case there is not a single 147 * ip address (0, or more than 1), this attribute will 148 * be skipped. 149 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 150 * the LSB bytes of the vif's mac address 151 */ 152 enum { 153 BC_FILTER_MAGIC_NONE = 0, 154 BC_FILTER_MAGIC_IP, 155 BC_FILTER_MAGIC_MAC, 156 }; 157 158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 159 { 160 /* arp */ 161 .discard = 0, 162 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 163 .attrs = { 164 { 165 /* frame type - arp, hw type - ethernet */ 166 .offset_type = 167 BCAST_FILTER_OFFSET_PAYLOAD_START, 168 .offset = sizeof(rfc1042_header), 169 .val = cpu_to_be32(0x08060001), 170 .mask = cpu_to_be32(0xffffffff), 171 }, 172 { 173 /* arp dest ip */ 174 .offset_type = 175 BCAST_FILTER_OFFSET_PAYLOAD_START, 176 .offset = sizeof(rfc1042_header) + 2 + 177 sizeof(struct arphdr) + 178 ETH_ALEN + sizeof(__be32) + 179 ETH_ALEN, 180 .mask = cpu_to_be32(0xffffffff), 181 /* mark it as special field */ 182 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 183 }, 184 }, 185 }, 186 { 187 /* dhcp offer bcast */ 188 .discard = 0, 189 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 190 .attrs = { 191 { 192 /* udp dest port - 68 (bootp client)*/ 193 .offset_type = BCAST_FILTER_OFFSET_IP_END, 194 .offset = offsetof(struct udphdr, dest), 195 .val = cpu_to_be32(0x00440000), 196 .mask = cpu_to_be32(0xffff0000), 197 }, 198 { 199 /* dhcp - lsb bytes of client hw address */ 200 .offset_type = BCAST_FILTER_OFFSET_IP_END, 201 .offset = 38, 202 .mask = cpu_to_be32(0xffffffff), 203 /* mark it as special field */ 204 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 205 }, 206 }, 207 }, 208 /* last filter must be empty */ 209 {}, 210 }; 211 #endif 212 213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 214 { 215 if (!iwl_mvm_is_d0i3_supported(mvm)) 216 return; 217 218 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); 219 spin_lock_bh(&mvm->refs_lock); 220 mvm->refs[ref_type]++; 221 spin_unlock_bh(&mvm->refs_lock); 222 iwl_trans_ref(mvm->trans); 223 } 224 225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 226 { 227 if (!iwl_mvm_is_d0i3_supported(mvm)) 228 return; 229 230 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); 231 spin_lock_bh(&mvm->refs_lock); 232 if (WARN_ON(!mvm->refs[ref_type])) { 233 spin_unlock_bh(&mvm->refs_lock); 234 return; 235 } 236 mvm->refs[ref_type]--; 237 spin_unlock_bh(&mvm->refs_lock); 238 iwl_trans_unref(mvm->trans); 239 } 240 241 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, 242 enum iwl_mvm_ref_type except_ref) 243 { 244 int i, j; 245 246 if (!iwl_mvm_is_d0i3_supported(mvm)) 247 return; 248 249 spin_lock_bh(&mvm->refs_lock); 250 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 251 if (except_ref == i || !mvm->refs[i]) 252 continue; 253 254 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", 255 i, mvm->refs[i]); 256 for (j = 0; j < mvm->refs[i]; j++) 257 iwl_trans_unref(mvm->trans); 258 mvm->refs[i] = 0; 259 } 260 spin_unlock_bh(&mvm->refs_lock); 261 } 262 263 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) 264 { 265 int i; 266 bool taken = false; 267 268 if (!iwl_mvm_is_d0i3_supported(mvm)) 269 return true; 270 271 spin_lock_bh(&mvm->refs_lock); 272 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 273 if (mvm->refs[i]) { 274 taken = true; 275 break; 276 } 277 } 278 spin_unlock_bh(&mvm->refs_lock); 279 280 return taken; 281 } 282 283 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 284 { 285 iwl_mvm_ref(mvm, ref_type); 286 287 if (!wait_event_timeout(mvm->d0i3_exit_waitq, 288 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), 289 HZ)) { 290 WARN_ON_ONCE(1); 291 iwl_mvm_unref(mvm, ref_type); 292 return -EIO; 293 } 294 295 return 0; 296 } 297 298 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 299 { 300 int i; 301 302 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 303 for (i = 0; i < NUM_PHY_CTX; i++) { 304 mvm->phy_ctxts[i].id = i; 305 mvm->phy_ctxts[i].ref = 0; 306 } 307 } 308 309 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 310 const char *alpha2, 311 enum iwl_mcc_source src_id, 312 bool *changed) 313 { 314 struct ieee80211_regdomain *regd = NULL; 315 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 317 struct iwl_mcc_update_resp *resp; 318 319 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 320 321 lockdep_assert_held(&mvm->mutex); 322 323 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 324 if (IS_ERR_OR_NULL(resp)) { 325 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 326 PTR_ERR_OR_ZERO(resp)); 327 goto out; 328 } 329 330 if (changed) 331 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE); 332 333 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 334 __le32_to_cpu(resp->n_channels), 335 resp->channels, 336 __le16_to_cpu(resp->mcc)); 337 /* Store the return source id */ 338 src_id = resp->source_id; 339 kfree(resp); 340 if (IS_ERR_OR_NULL(regd)) { 341 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 342 PTR_ERR_OR_ZERO(regd)); 343 goto out; 344 } 345 346 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 347 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 348 mvm->lar_regdom_set = true; 349 mvm->mcc_src = src_id; 350 351 out: 352 return regd; 353 } 354 355 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 356 { 357 bool changed; 358 struct ieee80211_regdomain *regd; 359 360 if (!iwl_mvm_is_lar_supported(mvm)) 361 return; 362 363 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 364 if (!IS_ERR_OR_NULL(regd)) { 365 /* only update the regulatory core if changed */ 366 if (changed) 367 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 368 369 kfree(regd); 370 } 371 } 372 373 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 374 bool *changed) 375 { 376 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 377 iwl_mvm_is_wifi_mcc_supported(mvm) ? 378 MCC_SOURCE_GET_CURRENT : 379 MCC_SOURCE_OLD_FW, changed); 380 } 381 382 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 383 { 384 enum iwl_mcc_source used_src; 385 struct ieee80211_regdomain *regd; 386 int ret; 387 bool changed; 388 const struct ieee80211_regdomain *r = 389 rtnl_dereference(mvm->hw->wiphy->regd); 390 391 if (!r) 392 return -ENOENT; 393 394 /* save the last source in case we overwrite it below */ 395 used_src = mvm->mcc_src; 396 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 397 /* Notify the firmware we support wifi location updates */ 398 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 399 if (!IS_ERR_OR_NULL(regd)) 400 kfree(regd); 401 } 402 403 /* Now set our last stored MCC and source */ 404 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 405 &changed); 406 if (IS_ERR_OR_NULL(regd)) 407 return -EIO; 408 409 /* update cfg80211 if the regdomain was changed */ 410 if (changed) 411 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 412 else 413 ret = 0; 414 415 kfree(regd); 416 return ret; 417 } 418 419 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 420 { 421 struct ieee80211_hw *hw = mvm->hw; 422 int num_mac, ret, i; 423 static const u32 mvm_ciphers[] = { 424 WLAN_CIPHER_SUITE_WEP40, 425 WLAN_CIPHER_SUITE_WEP104, 426 WLAN_CIPHER_SUITE_TKIP, 427 WLAN_CIPHER_SUITE_CCMP, 428 }; 429 430 /* Tell mac80211 our characteristics */ 431 ieee80211_hw_set(hw, SIGNAL_DBM); 432 ieee80211_hw_set(hw, SPECTRUM_MGMT); 433 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 434 ieee80211_hw_set(hw, QUEUE_CONTROL); 435 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 436 ieee80211_hw_set(hw, SUPPORTS_PS); 437 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 438 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 439 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 440 ieee80211_hw_set(hw, CONNECTION_MONITOR); 441 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 442 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 443 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 444 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 445 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 446 if (iwl_mvm_has_new_rx_api(mvm)) 447 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 448 449 if (fw_has_capa(&mvm->fw->ucode_capa, 450 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 451 ieee80211_hw_set(hw, AP_LINK_PS); 452 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 453 /* 454 * we absolutely need this for the new TX API since that comes 455 * with many more queues than the current code can deal with 456 * for station powersave 457 */ 458 return -EINVAL; 459 } 460 461 if (mvm->trans->num_rx_queues > 1) 462 ieee80211_hw_set(hw, USES_RSS); 463 464 if (mvm->trans->max_skb_frags) 465 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 466 467 hw->queues = IEEE80211_MAX_QUEUES; 468 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 469 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 470 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 471 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 472 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 473 474 hw->radiotap_timestamp.units_pos = 475 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 476 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 477 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 478 hw->radiotap_timestamp.accuracy = 22; 479 480 hw->rate_control_algorithm = "iwl-mvm-rs"; 481 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 482 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 483 484 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 485 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 486 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 487 hw->wiphy->cipher_suites = mvm->ciphers; 488 489 if (iwl_mvm_has_new_rx_api(mvm)) { 490 mvm->ciphers[hw->wiphy->n_cipher_suites] = 491 WLAN_CIPHER_SUITE_GCMP; 492 hw->wiphy->n_cipher_suites++; 493 mvm->ciphers[hw->wiphy->n_cipher_suites] = 494 WLAN_CIPHER_SUITE_GCMP_256; 495 hw->wiphy->n_cipher_suites++; 496 } 497 498 /* Enable 11w if software crypto is not enabled (as the 499 * firmware will interpret some mgmt packets, so enabling it 500 * with software crypto isn't safe). 501 */ 502 if (!iwlwifi_mod_params.swcrypto) { 503 ieee80211_hw_set(hw, MFP_CAPABLE); 504 mvm->ciphers[hw->wiphy->n_cipher_suites] = 505 WLAN_CIPHER_SUITE_AES_CMAC; 506 hw->wiphy->n_cipher_suites++; 507 if (iwl_mvm_has_new_rx_api(mvm)) { 508 mvm->ciphers[hw->wiphy->n_cipher_suites] = 509 WLAN_CIPHER_SUITE_BIP_GMAC_128; 510 hw->wiphy->n_cipher_suites++; 511 mvm->ciphers[hw->wiphy->n_cipher_suites] = 512 WLAN_CIPHER_SUITE_BIP_GMAC_256; 513 hw->wiphy->n_cipher_suites++; 514 } 515 } 516 517 /* currently FW API supports only one optional cipher scheme */ 518 if (mvm->fw->cs[0].cipher) { 519 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 520 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 521 522 mvm->hw->n_cipher_schemes = 1; 523 524 cs->cipher = le32_to_cpu(fwcs->cipher); 525 cs->iftype = BIT(NL80211_IFTYPE_STATION); 526 cs->hdr_len = fwcs->hdr_len; 527 cs->pn_len = fwcs->pn_len; 528 cs->pn_off = fwcs->pn_off; 529 cs->key_idx_off = fwcs->key_idx_off; 530 cs->key_idx_mask = fwcs->key_idx_mask; 531 cs->key_idx_shift = fwcs->key_idx_shift; 532 cs->mic_len = fwcs->mic_len; 533 534 mvm->hw->cipher_schemes = mvm->cs; 535 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 536 hw->wiphy->n_cipher_suites++; 537 } 538 539 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 540 hw->wiphy->features |= 541 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 542 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 543 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 544 545 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 546 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 547 hw->chanctx_data_size = sizeof(u16); 548 549 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 550 BIT(NL80211_IFTYPE_P2P_CLIENT) | 551 BIT(NL80211_IFTYPE_AP) | 552 BIT(NL80211_IFTYPE_P2P_GO) | 553 BIT(NL80211_IFTYPE_P2P_DEVICE) | 554 BIT(NL80211_IFTYPE_ADHOC); 555 556 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 557 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 558 if (iwl_mvm_is_lar_supported(mvm)) 559 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 560 else 561 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 562 REGULATORY_DISABLE_BEACON_HINTS; 563 564 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 565 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 566 567 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 568 hw->wiphy->n_iface_combinations = 569 ARRAY_SIZE(iwl_mvm_iface_combinations); 570 571 hw->wiphy->max_remain_on_channel_duration = 10000; 572 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 573 /* we can compensate an offset of up to 3 channels = 15 MHz */ 574 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5; 575 576 /* Extract MAC address */ 577 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 578 hw->wiphy->addresses = mvm->addresses; 579 hw->wiphy->n_addresses = 1; 580 581 /* Extract additional MAC addresses if available */ 582 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 583 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 584 585 for (i = 1; i < num_mac; i++) { 586 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 587 ETH_ALEN); 588 mvm->addresses[i].addr[5]++; 589 hw->wiphy->n_addresses++; 590 } 591 592 iwl_mvm_reset_phy_ctxts(mvm); 593 594 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 595 596 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 597 598 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 599 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 600 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 601 602 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 603 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 604 else 605 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 606 607 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 608 hw->wiphy->bands[NL80211_BAND_2GHZ] = 609 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 610 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 611 hw->wiphy->bands[NL80211_BAND_5GHZ] = 612 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 613 614 if (fw_has_capa(&mvm->fw->ucode_capa, 615 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 616 fw_has_api(&mvm->fw->ucode_capa, 617 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 618 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 619 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 620 } 621 622 hw->wiphy->hw_version = mvm->trans->hw_id; 623 624 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 625 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 626 else 627 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 628 629 hw->wiphy->max_sched_scan_reqs = 1; 630 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 631 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 632 /* we create the 802.11 header and zero length SSID IE. */ 633 hw->wiphy->max_sched_scan_ie_len = 634 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 635 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 636 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 637 638 /* 639 * the firmware uses u8 for num of iterations, but 0xff is saved for 640 * infinite loop, so the maximum number of iterations is actually 254. 641 */ 642 hw->wiphy->max_sched_scan_plan_iterations = 254; 643 644 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 645 NL80211_FEATURE_LOW_PRIORITY_SCAN | 646 NL80211_FEATURE_P2P_GO_OPPPS | 647 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 648 NL80211_FEATURE_DYNAMIC_SMPS | 649 NL80211_FEATURE_STATIC_SMPS | 650 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 651 652 if (fw_has_capa(&mvm->fw->ucode_capa, 653 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 654 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 655 if (fw_has_capa(&mvm->fw->ucode_capa, 656 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 657 hw->wiphy->features |= NL80211_FEATURE_QUIET; 658 659 if (fw_has_capa(&mvm->fw->ucode_capa, 660 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 661 hw->wiphy->features |= 662 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 663 664 if (fw_has_capa(&mvm->fw->ucode_capa, 665 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 666 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 667 668 if (fw_has_api(&mvm->fw->ucode_capa, 669 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 670 wiphy_ext_feature_set(hw->wiphy, 671 NL80211_EXT_FEATURE_SCAN_START_TIME); 672 wiphy_ext_feature_set(hw->wiphy, 673 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 674 wiphy_ext_feature_set(hw->wiphy, 675 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 676 } 677 678 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 679 680 #ifdef CONFIG_PM_SLEEP 681 if (iwl_mvm_is_d0i3_supported(mvm) && 682 device_can_wakeup(mvm->trans->dev)) { 683 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 684 hw->wiphy->wowlan = &mvm->wowlan; 685 } 686 687 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec && 688 mvm->trans->ops->d3_suspend && 689 mvm->trans->ops->d3_resume && 690 device_can_wakeup(mvm->trans->dev)) { 691 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 692 WIPHY_WOWLAN_DISCONNECT | 693 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 694 WIPHY_WOWLAN_RFKILL_RELEASE | 695 WIPHY_WOWLAN_NET_DETECT; 696 if (!iwlwifi_mod_params.swcrypto) 697 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 698 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 699 WIPHY_WOWLAN_4WAY_HANDSHAKE; 700 701 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 702 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 703 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 704 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 705 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support; 706 hw->wiphy->wowlan = &mvm->wowlan; 707 } 708 #endif 709 710 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 711 /* assign default bcast filtering configuration */ 712 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 713 #endif 714 715 ret = iwl_mvm_leds_init(mvm); 716 if (ret) 717 return ret; 718 719 if (fw_has_capa(&mvm->fw->ucode_capa, 720 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 721 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 722 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 723 ieee80211_hw_set(hw, TDLS_WIDER_BW); 724 } 725 726 if (fw_has_capa(&mvm->fw->ucode_capa, 727 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 728 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 729 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 730 } 731 732 hw->netdev_features |= mvm->cfg->features; 733 if (!iwl_mvm_is_csum_supported(mvm)) { 734 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 735 NETIF_F_RXCSUM); 736 /* We may support SW TX CSUM */ 737 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 738 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 739 } 740 741 ret = ieee80211_register_hw(mvm->hw); 742 if (ret) 743 iwl_mvm_leds_exit(mvm); 744 mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE; 745 746 if (mvm->cfg->vht_mu_mimo_supported) 747 wiphy_ext_feature_set(hw->wiphy, 748 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 749 750 return ret; 751 } 752 753 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 754 struct ieee80211_sta *sta, 755 struct sk_buff *skb) 756 { 757 struct iwl_mvm_sta *mvmsta; 758 bool defer = false; 759 760 /* 761 * double check the IN_D0I3 flag both before and after 762 * taking the spinlock, in order to prevent taking 763 * the spinlock when not needed. 764 */ 765 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 766 return false; 767 768 spin_lock(&mvm->d0i3_tx_lock); 769 /* 770 * testing the flag again ensures the skb dequeue 771 * loop (on d0i3 exit) hasn't run yet. 772 */ 773 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 774 goto out; 775 776 mvmsta = iwl_mvm_sta_from_mac80211(sta); 777 if (mvmsta->sta_id == IWL_MVM_INVALID_STA || 778 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 779 goto out; 780 781 __skb_queue_tail(&mvm->d0i3_tx, skb); 782 ieee80211_stop_queues(mvm->hw); 783 784 /* trigger wakeup */ 785 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 786 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 787 788 defer = true; 789 out: 790 spin_unlock(&mvm->d0i3_tx_lock); 791 return defer; 792 } 793 794 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 795 struct ieee80211_tx_control *control, 796 struct sk_buff *skb) 797 { 798 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 799 struct ieee80211_sta *sta = control->sta; 800 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 801 struct ieee80211_hdr *hdr = (void *)skb->data; 802 803 if (iwl_mvm_is_radio_killed(mvm)) { 804 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 805 goto drop; 806 } 807 808 if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && 809 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 810 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 811 goto drop; 812 813 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 814 if ((info->control.vif->type == NL80211_IFTYPE_AP || 815 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 816 ieee80211_is_mgmt(hdr->frame_control) && 817 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 818 sta = NULL; 819 820 if (sta) { 821 if (iwl_mvm_defer_tx(mvm, sta, skb)) 822 return; 823 if (iwl_mvm_tx_skb(mvm, skb, sta)) 824 goto drop; 825 return; 826 } 827 828 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 829 goto drop; 830 return; 831 drop: 832 ieee80211_free_txskb(hw, skb); 833 } 834 835 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) 836 { 837 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) 838 return false; 839 return true; 840 } 841 842 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) 843 { 844 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) 845 return false; 846 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) 847 return true; 848 849 /* enabled by default */ 850 return true; 851 } 852 853 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 854 do { \ 855 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 856 break; \ 857 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 858 } while (0) 859 860 static void 861 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 862 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 863 enum ieee80211_ampdu_mlme_action action) 864 { 865 struct iwl_fw_dbg_trigger_tlv *trig; 866 struct iwl_fw_dbg_trigger_ba *ba_trig; 867 868 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 869 return; 870 871 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 872 ba_trig = (void *)trig->data; 873 874 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 875 ieee80211_vif_to_wdev(vif), trig)) 876 return; 877 878 switch (action) { 879 case IEEE80211_AMPDU_TX_OPERATIONAL: { 880 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 881 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 882 883 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 884 "TX AGG START: MAC %pM tid %d ssn %d\n", 885 sta->addr, tid, tid_data->ssn); 886 break; 887 } 888 case IEEE80211_AMPDU_TX_STOP_CONT: 889 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 890 "TX AGG STOP: MAC %pM tid %d\n", 891 sta->addr, tid); 892 break; 893 case IEEE80211_AMPDU_RX_START: 894 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 895 "RX AGG START: MAC %pM tid %d ssn %d\n", 896 sta->addr, tid, rx_ba_ssn); 897 break; 898 case IEEE80211_AMPDU_RX_STOP: 899 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 900 "RX AGG STOP: MAC %pM tid %d\n", 901 sta->addr, tid); 902 break; 903 default: 904 break; 905 } 906 } 907 908 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 909 struct ieee80211_vif *vif, 910 struct ieee80211_ampdu_params *params) 911 { 912 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 913 int ret; 914 bool tx_agg_ref = false; 915 struct ieee80211_sta *sta = params->sta; 916 enum ieee80211_ampdu_mlme_action action = params->action; 917 u16 tid = params->tid; 918 u16 *ssn = ¶ms->ssn; 919 u8 buf_size = params->buf_size; 920 bool amsdu = params->amsdu; 921 u16 timeout = params->timeout; 922 923 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 924 sta->addr, tid, action); 925 926 if (!(mvm->nvm_data->sku_cap_11n_enable)) 927 return -EACCES; 928 929 /* return from D0i3 before starting a new Tx aggregation */ 930 switch (action) { 931 case IEEE80211_AMPDU_TX_START: 932 case IEEE80211_AMPDU_TX_STOP_CONT: 933 case IEEE80211_AMPDU_TX_STOP_FLUSH: 934 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 935 case IEEE80211_AMPDU_TX_OPERATIONAL: 936 /* 937 * for tx start, wait synchronously until D0i3 exit to 938 * get the correct sequence number for the tid. 939 * additionally, some other ampdu actions use direct 940 * target access, which is not handled automatically 941 * by the trans layer (unlike commands), so wait for 942 * d0i3 exit in these cases as well. 943 */ 944 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 945 if (ret) 946 return ret; 947 948 tx_agg_ref = true; 949 break; 950 default: 951 break; 952 } 953 954 mutex_lock(&mvm->mutex); 955 956 switch (action) { 957 case IEEE80211_AMPDU_RX_START: 958 if (!iwl_enable_rx_ampdu(mvm->cfg)) { 959 ret = -EINVAL; 960 break; 961 } 962 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 963 timeout); 964 break; 965 case IEEE80211_AMPDU_RX_STOP: 966 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 967 timeout); 968 break; 969 case IEEE80211_AMPDU_TX_START: 970 if (!iwl_enable_tx_ampdu(mvm->cfg)) { 971 ret = -EINVAL; 972 break; 973 } 974 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 975 break; 976 case IEEE80211_AMPDU_TX_STOP_CONT: 977 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 978 break; 979 case IEEE80211_AMPDU_TX_STOP_FLUSH: 980 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 981 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 982 break; 983 case IEEE80211_AMPDU_TX_OPERATIONAL: 984 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 985 buf_size, amsdu); 986 break; 987 default: 988 WARN_ON_ONCE(1); 989 ret = -EINVAL; 990 break; 991 } 992 993 if (!ret) { 994 u16 rx_ba_ssn = 0; 995 996 if (action == IEEE80211_AMPDU_RX_START) 997 rx_ba_ssn = *ssn; 998 999 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1000 rx_ba_ssn, action); 1001 } 1002 mutex_unlock(&mvm->mutex); 1003 1004 /* 1005 * If the tid is marked as started, we won't use it for offloaded 1006 * traffic on the next D0i3 entry. It's safe to unref. 1007 */ 1008 if (tx_agg_ref) 1009 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 1010 1011 return ret; 1012 } 1013 1014 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1015 struct ieee80211_vif *vif) 1016 { 1017 struct iwl_mvm *mvm = data; 1018 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1019 1020 mvmvif->uploaded = false; 1021 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1022 1023 spin_lock_bh(&mvm->time_event_lock); 1024 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1025 spin_unlock_bh(&mvm->time_event_lock); 1026 1027 mvmvif->phy_ctxt = NULL; 1028 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1029 } 1030 1031 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1032 { 1033 /* clear the D3 reconfig, we only need it to avoid dumping a 1034 * firmware coredump on reconfiguration, we shouldn't do that 1035 * on D3->D0 transition 1036 */ 1037 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) { 1038 mvm->fwrt.dump.desc = &iwl_dump_desc_assert; 1039 iwl_fw_error_dump(&mvm->fwrt); 1040 } 1041 1042 /* cleanup all stale references (scan, roc), but keep the 1043 * ucode_down ref until reconfig is complete 1044 */ 1045 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 1046 1047 iwl_mvm_stop_device(mvm); 1048 1049 mvm->scan_status = 0; 1050 mvm->ps_disabled = false; 1051 mvm->calibrating = false; 1052 1053 /* just in case one was running */ 1054 iwl_mvm_cleanup_roc_te(mvm); 1055 ieee80211_remain_on_channel_expired(mvm->hw); 1056 1057 /* 1058 * cleanup all interfaces, even inactive ones, as some might have 1059 * gone down during the HW restart 1060 */ 1061 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1062 1063 mvm->p2p_device_vif = NULL; 1064 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1065 1066 iwl_mvm_reset_phy_ctxts(mvm); 1067 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1068 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames)); 1069 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1070 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1071 1072 ieee80211_wake_queues(mvm->hw); 1073 1074 /* clear any stale d0i3 state */ 1075 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1076 1077 mvm->vif_count = 0; 1078 mvm->rx_ba_sessions = 0; 1079 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1080 mvm->monitor_on = false; 1081 1082 /* keep statistics ticking */ 1083 iwl_mvm_accu_radio_stats(mvm); 1084 } 1085 1086 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1087 { 1088 int ret; 1089 1090 lockdep_assert_held(&mvm->mutex); 1091 1092 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1093 /* 1094 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1095 * so later code will - from now on - see that we're doing it. 1096 */ 1097 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1098 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1099 /* Clean up some internal and mac80211 state on restart */ 1100 iwl_mvm_restart_cleanup(mvm); 1101 } else { 1102 /* Hold the reference to prevent runtime suspend while 1103 * the start procedure runs. It's a bit confusing 1104 * that the UCODE_DOWN reference is taken, but it just 1105 * means "UCODE is not UP yet". ( TODO: rename this 1106 * reference). 1107 */ 1108 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1109 } 1110 ret = iwl_mvm_up(mvm); 1111 1112 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1113 /* Something went wrong - we need to finish some cleanup 1114 * that normally iwl_mvm_mac_restart_complete() below 1115 * would do. 1116 */ 1117 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1118 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1119 } 1120 1121 return ret; 1122 } 1123 1124 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1125 { 1126 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1127 int ret; 1128 1129 /* Some hw restart cleanups must not hold the mutex */ 1130 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1131 /* 1132 * Make sure we are out of d0i3. This is needed 1133 * to make sure the reference accounting is correct 1134 * (and there is no stale d0i3_exit_work). 1135 */ 1136 wait_event_timeout(mvm->d0i3_exit_waitq, 1137 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1138 &mvm->status), 1139 HZ); 1140 } 1141 1142 mutex_lock(&mvm->mutex); 1143 ret = __iwl_mvm_mac_start(mvm); 1144 mutex_unlock(&mvm->mutex); 1145 1146 return ret; 1147 } 1148 1149 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1150 { 1151 int ret; 1152 1153 mutex_lock(&mvm->mutex); 1154 1155 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1156 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1157 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1158 if (ret) 1159 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1160 ret); 1161 1162 /* allow transport/FW low power modes */ 1163 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1164 1165 /* 1166 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1167 * of packets the FW sent out, so we must reconnect. 1168 */ 1169 iwl_mvm_teardown_tdls_peers(mvm); 1170 1171 mutex_unlock(&mvm->mutex); 1172 } 1173 1174 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1175 { 1176 if (iwl_mvm_is_d0i3_supported(mvm) && 1177 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1178 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1179 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1180 &mvm->status), 1181 HZ), 1182 "D0i3 exit on resume timed out\n"); 1183 } 1184 1185 static void 1186 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1187 enum ieee80211_reconfig_type reconfig_type) 1188 { 1189 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1190 1191 switch (reconfig_type) { 1192 case IEEE80211_RECONFIG_TYPE_RESTART: 1193 iwl_mvm_restart_complete(mvm); 1194 break; 1195 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1196 iwl_mvm_resume_complete(mvm); 1197 break; 1198 } 1199 } 1200 1201 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1202 { 1203 lockdep_assert_held(&mvm->mutex); 1204 1205 /* firmware counters are obviously reset now, but we shouldn't 1206 * partially track so also clear the fw_reset_accu counters. 1207 */ 1208 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1209 1210 /* async_handlers_wk is now blocked */ 1211 1212 /* 1213 * The work item could be running or queued if the 1214 * ROC time event stops just as we get here. 1215 */ 1216 flush_work(&mvm->roc_done_wk); 1217 1218 iwl_mvm_stop_device(mvm); 1219 1220 iwl_mvm_async_handlers_purge(mvm); 1221 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1222 1223 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1224 iwl_mvm_del_aux_sta(mvm); 1225 1226 /* 1227 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() 1228 * won't be called in this case). 1229 * But make sure to cleanup interfaces that have gone down before/during 1230 * HW restart was requested. 1231 */ 1232 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1233 ieee80211_iterate_interfaces(mvm->hw, 0, 1234 iwl_mvm_cleanup_iterator, mvm); 1235 1236 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1237 * make sure there's nothing left there and warn if any is found. 1238 */ 1239 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1240 int i; 1241 1242 for (i = 0; i < mvm->max_scans; i++) { 1243 if (WARN_ONCE(mvm->scan_uid_status[i], 1244 "UMAC scan UID %d status was not cleaned\n", 1245 i)) 1246 mvm->scan_uid_status[i] = 0; 1247 } 1248 } 1249 } 1250 1251 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1252 { 1253 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1254 1255 flush_work(&mvm->d0i3_exit_work); 1256 flush_work(&mvm->async_handlers_wk); 1257 flush_work(&mvm->add_stream_wk); 1258 1259 /* 1260 * Lock and clear the firmware running bit here already, so that 1261 * new commands coming in elsewhere, e.g. from debugfs, will not 1262 * be able to proceed. This is important here because one of those 1263 * debugfs files causes the firmware dump to be triggered, and if we 1264 * don't stop debugfs accesses before canceling that it could be 1265 * retriggered after we flush it but before we've cleared the bit. 1266 */ 1267 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1268 1269 iwl_fw_cancel_dump(&mvm->fwrt); 1270 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1271 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1272 iwl_fw_free_dump_desc(&mvm->fwrt); 1273 1274 mutex_lock(&mvm->mutex); 1275 __iwl_mvm_mac_stop(mvm); 1276 mutex_unlock(&mvm->mutex); 1277 1278 /* 1279 * The worker might have been waiting for the mutex, let it run and 1280 * discover that its list is now empty. 1281 */ 1282 cancel_work_sync(&mvm->async_handlers_wk); 1283 } 1284 1285 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1286 { 1287 u16 i; 1288 1289 lockdep_assert_held(&mvm->mutex); 1290 1291 for (i = 0; i < NUM_PHY_CTX; i++) 1292 if (!mvm->phy_ctxts[i].ref) 1293 return &mvm->phy_ctxts[i]; 1294 1295 IWL_ERR(mvm, "No available PHY context\n"); 1296 return NULL; 1297 } 1298 1299 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1300 s16 tx_power) 1301 { 1302 struct iwl_dev_tx_power_cmd cmd = { 1303 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1304 .v3.mac_context_id = 1305 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1306 .v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1307 }; 1308 int len = sizeof(cmd); 1309 1310 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1311 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1312 1313 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1314 len = sizeof(cmd.v3); 1315 1316 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1317 } 1318 1319 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1320 struct ieee80211_vif *vif) 1321 { 1322 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1323 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1324 int ret; 1325 1326 mvmvif->mvm = mvm; 1327 1328 /* 1329 * make sure D0i3 exit is completed, otherwise a target access 1330 * during tx queue configuration could be done when still in 1331 * D0i3 state. 1332 */ 1333 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1334 if (ret) 1335 return ret; 1336 1337 /* 1338 * Not much to do here. The stack will not allow interface 1339 * types or combinations that we didn't advertise, so we 1340 * don't really have to check the types. 1341 */ 1342 1343 mutex_lock(&mvm->mutex); 1344 1345 /* make sure that beacon statistics don't go backwards with FW reset */ 1346 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1347 mvmvif->beacon_stats.accu_num_beacons += 1348 mvmvif->beacon_stats.num_beacons; 1349 1350 /* Allocate resources for the MAC context, and add it to the fw */ 1351 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1352 if (ret) 1353 goto out_unlock; 1354 1355 /* Counting number of interfaces is needed for legacy PM */ 1356 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1357 mvm->vif_count++; 1358 1359 /* 1360 * The AP binding flow can be done only after the beacon 1361 * template is configured (which happens only in the mac80211 1362 * start_ap() flow), and adding the broadcast station can happen 1363 * only after the binding. 1364 * In addition, since modifying the MAC before adding a bcast 1365 * station is not allowed by the FW, delay the adding of MAC context to 1366 * the point where we can also add the bcast station. 1367 * In short: there's not much we can do at this point, other than 1368 * allocating resources :) 1369 */ 1370 if (vif->type == NL80211_IFTYPE_AP || 1371 vif->type == NL80211_IFTYPE_ADHOC) { 1372 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1373 if (ret) { 1374 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1375 goto out_release; 1376 } 1377 1378 /* 1379 * Only queue for this station is the mcast queue, 1380 * which shouldn't be in TFD mask anyway 1381 */ 1382 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1383 0, vif->type, 1384 IWL_STA_MULTICAST); 1385 if (ret) 1386 goto out_release; 1387 1388 iwl_mvm_vif_dbgfs_register(mvm, vif); 1389 goto out_unlock; 1390 } 1391 1392 mvmvif->features |= hw->netdev_features; 1393 1394 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1395 if (ret) 1396 goto out_release; 1397 1398 ret = iwl_mvm_power_update_mac(mvm); 1399 if (ret) 1400 goto out_remove_mac; 1401 1402 /* beacon filtering */ 1403 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1404 if (ret) 1405 goto out_remove_mac; 1406 1407 if (!mvm->bf_allowed_vif && 1408 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1409 mvm->bf_allowed_vif = mvmvif; 1410 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1411 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1412 } 1413 1414 /* 1415 * P2P_DEVICE interface does not have a channel context assigned to it, 1416 * so a dedicated PHY context is allocated to it and the corresponding 1417 * MAC context is bound to it at this stage. 1418 */ 1419 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1420 1421 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1422 if (!mvmvif->phy_ctxt) { 1423 ret = -ENOSPC; 1424 goto out_free_bf; 1425 } 1426 1427 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1428 ret = iwl_mvm_binding_add_vif(mvm, vif); 1429 if (ret) 1430 goto out_unref_phy; 1431 1432 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1433 if (ret) 1434 goto out_unbind; 1435 1436 /* Save a pointer to p2p device vif, so it can later be used to 1437 * update the p2p device MAC when a GO is started/stopped */ 1438 mvm->p2p_device_vif = vif; 1439 } 1440 1441 if (vif->type == NL80211_IFTYPE_MONITOR) 1442 mvm->monitor_on = true; 1443 1444 iwl_mvm_vif_dbgfs_register(mvm, vif); 1445 goto out_unlock; 1446 1447 out_unbind: 1448 iwl_mvm_binding_remove_vif(mvm, vif); 1449 out_unref_phy: 1450 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1451 out_free_bf: 1452 if (mvm->bf_allowed_vif == mvmvif) { 1453 mvm->bf_allowed_vif = NULL; 1454 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1455 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1456 } 1457 out_remove_mac: 1458 mvmvif->phy_ctxt = NULL; 1459 iwl_mvm_mac_ctxt_remove(mvm, vif); 1460 out_release: 1461 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1462 mvm->vif_count--; 1463 out_unlock: 1464 mutex_unlock(&mvm->mutex); 1465 1466 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1467 1468 return ret; 1469 } 1470 1471 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1472 struct ieee80211_vif *vif) 1473 { 1474 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1475 /* 1476 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1477 * We assume here that all the packets sent to the OFFCHANNEL 1478 * queue are sent in ROC session. 1479 */ 1480 flush_work(&mvm->roc_done_wk); 1481 } 1482 } 1483 1484 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1485 struct ieee80211_vif *vif) 1486 { 1487 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1488 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1489 1490 iwl_mvm_prepare_mac_removal(mvm, vif); 1491 1492 mutex_lock(&mvm->mutex); 1493 1494 if (mvm->bf_allowed_vif == mvmvif) { 1495 mvm->bf_allowed_vif = NULL; 1496 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1497 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1498 } 1499 1500 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1501 1502 /* 1503 * For AP/GO interface, the tear down of the resources allocated to the 1504 * interface is be handled as part of the stop_ap flow. 1505 */ 1506 if (vif->type == NL80211_IFTYPE_AP || 1507 vif->type == NL80211_IFTYPE_ADHOC) { 1508 #ifdef CONFIG_NL80211_TESTMODE 1509 if (vif == mvm->noa_vif) { 1510 mvm->noa_vif = NULL; 1511 mvm->noa_duration = 0; 1512 } 1513 #endif 1514 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1515 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1516 goto out_release; 1517 } 1518 1519 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1520 mvm->p2p_device_vif = NULL; 1521 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1522 iwl_mvm_binding_remove_vif(mvm, vif); 1523 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1524 mvmvif->phy_ctxt = NULL; 1525 } 1526 1527 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1528 mvm->vif_count--; 1529 1530 iwl_mvm_power_update_mac(mvm); 1531 iwl_mvm_mac_ctxt_remove(mvm, vif); 1532 1533 if (vif->type == NL80211_IFTYPE_MONITOR) 1534 mvm->monitor_on = false; 1535 1536 out_release: 1537 mutex_unlock(&mvm->mutex); 1538 } 1539 1540 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1541 { 1542 return 0; 1543 } 1544 1545 struct iwl_mvm_mc_iter_data { 1546 struct iwl_mvm *mvm; 1547 int port_id; 1548 }; 1549 1550 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1551 struct ieee80211_vif *vif) 1552 { 1553 struct iwl_mvm_mc_iter_data *data = _data; 1554 struct iwl_mvm *mvm = data->mvm; 1555 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1556 struct iwl_host_cmd hcmd = { 1557 .id = MCAST_FILTER_CMD, 1558 .flags = CMD_ASYNC, 1559 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1560 }; 1561 int ret, len; 1562 1563 /* if we don't have free ports, mcast frames will be dropped */ 1564 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1565 return; 1566 1567 if (vif->type != NL80211_IFTYPE_STATION || 1568 !vif->bss_conf.assoc) 1569 return; 1570 1571 cmd->port_id = data->port_id++; 1572 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1573 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1574 1575 hcmd.len[0] = len; 1576 hcmd.data[0] = cmd; 1577 1578 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1579 if (ret) 1580 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1581 } 1582 1583 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1584 { 1585 struct iwl_mvm_mc_iter_data iter_data = { 1586 .mvm = mvm, 1587 }; 1588 1589 lockdep_assert_held(&mvm->mutex); 1590 1591 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1592 return; 1593 1594 ieee80211_iterate_active_interfaces_atomic( 1595 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1596 iwl_mvm_mc_iface_iterator, &iter_data); 1597 } 1598 1599 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1600 struct netdev_hw_addr_list *mc_list) 1601 { 1602 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1603 struct iwl_mcast_filter_cmd *cmd; 1604 struct netdev_hw_addr *addr; 1605 int addr_count; 1606 bool pass_all; 1607 int len; 1608 1609 addr_count = netdev_hw_addr_list_count(mc_list); 1610 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1611 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1612 if (pass_all) 1613 addr_count = 0; 1614 1615 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1616 cmd = kzalloc(len, GFP_ATOMIC); 1617 if (!cmd) 1618 return 0; 1619 1620 if (pass_all) { 1621 cmd->pass_all = 1; 1622 return (u64)(unsigned long)cmd; 1623 } 1624 1625 netdev_hw_addr_list_for_each(addr, mc_list) { 1626 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1627 cmd->count, addr->addr); 1628 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1629 addr->addr, ETH_ALEN); 1630 cmd->count++; 1631 } 1632 1633 return (u64)(unsigned long)cmd; 1634 } 1635 1636 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1637 unsigned int changed_flags, 1638 unsigned int *total_flags, 1639 u64 multicast) 1640 { 1641 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1642 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1643 1644 mutex_lock(&mvm->mutex); 1645 1646 /* replace previous configuration */ 1647 kfree(mvm->mcast_filter_cmd); 1648 mvm->mcast_filter_cmd = cmd; 1649 1650 if (!cmd) 1651 goto out; 1652 1653 if (changed_flags & FIF_ALLMULTI) 1654 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1655 1656 if (cmd->pass_all) 1657 cmd->count = 0; 1658 1659 iwl_mvm_recalc_multicast(mvm); 1660 out: 1661 mutex_unlock(&mvm->mutex); 1662 *total_flags = 0; 1663 } 1664 1665 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1666 struct ieee80211_vif *vif, 1667 unsigned int filter_flags, 1668 unsigned int changed_flags) 1669 { 1670 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1671 1672 /* We support only filter for probe requests */ 1673 if (!(changed_flags & FIF_PROBE_REQ)) 1674 return; 1675 1676 /* Supported only for p2p client interfaces */ 1677 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1678 !vif->p2p) 1679 return; 1680 1681 mutex_lock(&mvm->mutex); 1682 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1683 mutex_unlock(&mvm->mutex); 1684 } 1685 1686 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1687 struct iwl_bcast_iter_data { 1688 struct iwl_mvm *mvm; 1689 struct iwl_bcast_filter_cmd *cmd; 1690 u8 current_filter; 1691 }; 1692 1693 static void 1694 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1695 const struct iwl_fw_bcast_filter *in_filter, 1696 struct iwl_fw_bcast_filter *out_filter) 1697 { 1698 struct iwl_fw_bcast_filter_attr *attr; 1699 int i; 1700 1701 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1702 1703 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1704 attr = &out_filter->attrs[i]; 1705 1706 if (!attr->mask) 1707 break; 1708 1709 switch (attr->reserved1) { 1710 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1711 if (vif->bss_conf.arp_addr_cnt != 1) { 1712 attr->mask = 0; 1713 continue; 1714 } 1715 1716 attr->val = vif->bss_conf.arp_addr_list[0]; 1717 break; 1718 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1719 attr->val = *(__be32 *)&vif->addr[2]; 1720 break; 1721 default: 1722 break; 1723 } 1724 attr->reserved1 = 0; 1725 out_filter->num_attrs++; 1726 } 1727 } 1728 1729 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1730 struct ieee80211_vif *vif) 1731 { 1732 struct iwl_bcast_iter_data *data = _data; 1733 struct iwl_mvm *mvm = data->mvm; 1734 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1735 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1736 struct iwl_fw_bcast_mac *bcast_mac; 1737 int i; 1738 1739 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1740 return; 1741 1742 bcast_mac = &cmd->macs[mvmvif->id]; 1743 1744 /* 1745 * enable filtering only for associated stations, but not for P2P 1746 * Clients 1747 */ 1748 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1749 !vif->bss_conf.assoc) 1750 return; 1751 1752 bcast_mac->default_discard = 1; 1753 1754 /* copy all configured filters */ 1755 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1756 /* 1757 * Make sure we don't exceed our filters limit. 1758 * if there is still a valid filter to be configured, 1759 * be on the safe side and just allow bcast for this mac. 1760 */ 1761 if (WARN_ON_ONCE(data->current_filter >= 1762 ARRAY_SIZE(cmd->filters))) { 1763 bcast_mac->default_discard = 0; 1764 bcast_mac->attached_filters = 0; 1765 break; 1766 } 1767 1768 iwl_mvm_set_bcast_filter(vif, 1769 &mvm->bcast_filters[i], 1770 &cmd->filters[data->current_filter]); 1771 1772 /* skip current filter if it contains no attributes */ 1773 if (!cmd->filters[data->current_filter].num_attrs) 1774 continue; 1775 1776 /* attach the filter to current mac */ 1777 bcast_mac->attached_filters |= 1778 cpu_to_le16(BIT(data->current_filter)); 1779 1780 data->current_filter++; 1781 } 1782 } 1783 1784 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1785 struct iwl_bcast_filter_cmd *cmd) 1786 { 1787 struct iwl_bcast_iter_data iter_data = { 1788 .mvm = mvm, 1789 .cmd = cmd, 1790 }; 1791 1792 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1793 return false; 1794 1795 memset(cmd, 0, sizeof(*cmd)); 1796 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1797 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1798 1799 #ifdef CONFIG_IWLWIFI_DEBUGFS 1800 /* use debugfs filters/macs if override is configured */ 1801 if (mvm->dbgfs_bcast_filtering.override) { 1802 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1803 sizeof(cmd->filters)); 1804 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1805 sizeof(cmd->macs)); 1806 return true; 1807 } 1808 #endif 1809 1810 /* if no filters are configured, do nothing */ 1811 if (!mvm->bcast_filters) 1812 return false; 1813 1814 /* configure and attach these filters for each associated sta vif */ 1815 ieee80211_iterate_active_interfaces( 1816 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1817 iwl_mvm_bcast_filter_iterator, &iter_data); 1818 1819 return true; 1820 } 1821 1822 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1823 { 1824 struct iwl_bcast_filter_cmd cmd; 1825 1826 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1827 return 0; 1828 1829 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1830 return 0; 1831 1832 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1833 sizeof(cmd), &cmd); 1834 } 1835 #else 1836 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1837 { 1838 return 0; 1839 } 1840 #endif 1841 1842 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1843 struct ieee80211_vif *vif) 1844 { 1845 struct iwl_mu_group_mgmt_cmd cmd = {}; 1846 1847 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1848 WLAN_MEMBERSHIP_LEN); 1849 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1850 WLAN_USER_POSITION_LEN); 1851 1852 return iwl_mvm_send_cmd_pdu(mvm, 1853 WIDE_ID(DATA_PATH_GROUP, 1854 UPDATE_MU_GROUPS_CMD), 1855 0, sizeof(cmd), &cmd); 1856 } 1857 1858 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1859 struct ieee80211_vif *vif) 1860 { 1861 if (vif->mu_mimo_owner) { 1862 struct iwl_mu_group_mgmt_notif *notif = _data; 1863 1864 /* 1865 * MU-MIMO Group Id action frame is little endian. We treat 1866 * the data received from firmware as if it came from the 1867 * action frame, so no conversion is needed. 1868 */ 1869 ieee80211_update_mu_groups(vif, 1870 (u8 *)¬if->membership_status, 1871 (u8 *)¬if->user_position); 1872 } 1873 } 1874 1875 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1876 struct iwl_rx_cmd_buffer *rxb) 1877 { 1878 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1879 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1880 1881 ieee80211_iterate_active_interfaces_atomic( 1882 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1883 iwl_mvm_mu_mimo_iface_iterator, notif); 1884 } 1885 1886 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 1887 struct ieee80211_vif *vif, 1888 struct ieee80211_bss_conf *bss_conf, 1889 u32 changes) 1890 { 1891 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1892 int ret; 1893 1894 /* 1895 * Re-calculate the tsf id, as the master-slave relations depend on the 1896 * beacon interval, which was not known when the station interface was 1897 * added. 1898 */ 1899 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) 1900 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 1901 1902 /* 1903 * If we're not associated yet, take the (new) BSSID before associating 1904 * so the firmware knows. If we're already associated, then use the old 1905 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 1906 * branch for disassociation below. 1907 */ 1908 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 1909 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1910 1911 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 1912 if (ret) 1913 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 1914 1915 /* after sending it once, adopt mac80211 data */ 1916 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1917 mvmvif->associated = bss_conf->assoc; 1918 1919 if (changes & BSS_CHANGED_ASSOC) { 1920 if (bss_conf->assoc) { 1921 /* clear statistics to get clean beacon counter */ 1922 iwl_mvm_request_statistics(mvm, true); 1923 memset(&mvmvif->beacon_stats, 0, 1924 sizeof(mvmvif->beacon_stats)); 1925 1926 /* add quota for this interface */ 1927 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1928 if (ret) { 1929 IWL_ERR(mvm, "failed to update quotas\n"); 1930 return; 1931 } 1932 1933 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1934 &mvm->status)) { 1935 /* 1936 * If we're restarting then the firmware will 1937 * obviously have lost synchronisation with 1938 * the AP. It will attempt to synchronise by 1939 * itself, but we can make it more reliable by 1940 * scheduling a session protection time event. 1941 * 1942 * The firmware needs to receive a beacon to 1943 * catch up with synchronisation, use 110% of 1944 * the beacon interval. 1945 * 1946 * Set a large maximum delay to allow for more 1947 * than a single interface. 1948 */ 1949 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 1950 iwl_mvm_protect_session(mvm, vif, dur, dur, 1951 5 * dur, false); 1952 } 1953 1954 iwl_mvm_sf_update(mvm, vif, false); 1955 iwl_mvm_power_vif_assoc(mvm, vif); 1956 if (vif->p2p) { 1957 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 1958 iwl_mvm_update_smps(mvm, vif, 1959 IWL_MVM_SMPS_REQ_PROT, 1960 IEEE80211_SMPS_DYNAMIC); 1961 } 1962 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 1963 /* 1964 * If update fails - SF might be running in associated 1965 * mode while disassociated - which is forbidden. 1966 */ 1967 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 1968 "Failed to update SF upon disassociation\n"); 1969 1970 /* 1971 * If we get an assert during the connection (after the 1972 * station has been added, but before the vif is set 1973 * to associated), mac80211 will re-add the station and 1974 * then configure the vif. Since the vif is not 1975 * associated, we would remove the station here and 1976 * this would fail the recovery. 1977 */ 1978 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1979 &mvm->status)) { 1980 /* 1981 * Remove AP station now that 1982 * the MAC is unassoc 1983 */ 1984 ret = iwl_mvm_rm_sta_id(mvm, vif, 1985 mvmvif->ap_sta_id); 1986 if (ret) 1987 IWL_ERR(mvm, 1988 "failed to remove AP station\n"); 1989 1990 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 1991 mvm->d0i3_ap_sta_id = 1992 IWL_MVM_INVALID_STA; 1993 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1994 } 1995 1996 /* remove quota for this interface */ 1997 ret = iwl_mvm_update_quotas(mvm, false, NULL); 1998 if (ret) 1999 IWL_ERR(mvm, "failed to update quotas\n"); 2000 2001 if (vif->p2p) 2002 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 2003 2004 /* this will take the cleared BSSID from bss_conf */ 2005 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2006 if (ret) 2007 IWL_ERR(mvm, 2008 "failed to update MAC %pM (clear after unassoc)\n", 2009 vif->addr); 2010 } 2011 2012 /* 2013 * The firmware tracks the MU-MIMO group on its own. 2014 * However, on HW restart we should restore this data. 2015 */ 2016 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2017 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2018 ret = iwl_mvm_update_mu_groups(mvm, vif); 2019 if (ret) 2020 IWL_ERR(mvm, 2021 "failed to update VHT MU_MIMO groups\n"); 2022 } 2023 2024 iwl_mvm_recalc_multicast(mvm); 2025 iwl_mvm_configure_bcast_filter(mvm); 2026 2027 /* reset rssi values */ 2028 mvmvif->bf_data.ave_beacon_signal = 0; 2029 2030 iwl_mvm_bt_coex_vif_change(mvm); 2031 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2032 IEEE80211_SMPS_AUTOMATIC); 2033 if (fw_has_capa(&mvm->fw->ucode_capa, 2034 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2035 iwl_mvm_config_scan(mvm); 2036 } 2037 2038 if (changes & BSS_CHANGED_BEACON_INFO) { 2039 /* 2040 * We received a beacon from the associated AP so 2041 * remove the session protection. 2042 */ 2043 iwl_mvm_stop_session_protection(mvm, vif); 2044 2045 iwl_mvm_sf_update(mvm, vif, false); 2046 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2047 } 2048 2049 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2050 /* 2051 * Send power command on every beacon change, 2052 * because we may have not enabled beacon abort yet. 2053 */ 2054 BSS_CHANGED_BEACON_INFO)) { 2055 ret = iwl_mvm_power_update_mac(mvm); 2056 if (ret) 2057 IWL_ERR(mvm, "failed to update power mode\n"); 2058 } 2059 2060 if (changes & BSS_CHANGED_TXPOWER) { 2061 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2062 bss_conf->txpower); 2063 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2064 } 2065 2066 if (changes & BSS_CHANGED_CQM) { 2067 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2068 /* reset cqm events tracking */ 2069 mvmvif->bf_data.last_cqm_event = 0; 2070 if (mvmvif->bf_data.bf_enabled) { 2071 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2072 if (ret) 2073 IWL_ERR(mvm, 2074 "failed to update CQM thresholds\n"); 2075 } 2076 } 2077 2078 if (changes & BSS_CHANGED_ARP_FILTER) { 2079 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2080 iwl_mvm_configure_bcast_filter(mvm); 2081 } 2082 } 2083 2084 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2085 struct ieee80211_vif *vif) 2086 { 2087 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2088 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2089 int ret; 2090 2091 /* 2092 * iwl_mvm_mac_ctxt_add() might read directly from the device 2093 * (the system time), so make sure it is available. 2094 */ 2095 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2096 if (ret) 2097 return ret; 2098 2099 mutex_lock(&mvm->mutex); 2100 2101 /* Send the beacon template */ 2102 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2103 if (ret) 2104 goto out_unlock; 2105 2106 /* 2107 * Re-calculate the tsf id, as the master-slave relations depend on the 2108 * beacon interval, which was not known when the AP interface was added. 2109 */ 2110 if (vif->type == NL80211_IFTYPE_AP) 2111 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2112 2113 mvmvif->ap_assoc_sta_count = 0; 2114 2115 /* Add the mac context */ 2116 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2117 if (ret) 2118 goto out_unlock; 2119 2120 /* Perform the binding */ 2121 ret = iwl_mvm_binding_add_vif(mvm, vif); 2122 if (ret) 2123 goto out_remove; 2124 2125 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2126 if (ret) 2127 goto out_unbind; 2128 2129 /* Send the bcast station. At this stage the TBTT and DTIM time events 2130 * are added and applied to the scheduler */ 2131 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2132 if (ret) 2133 goto out_rm_mcast; 2134 2135 /* must be set before quota calculations */ 2136 mvmvif->ap_ibss_active = true; 2137 2138 /* power updated needs to be done before quotas */ 2139 iwl_mvm_power_update_mac(mvm); 2140 2141 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2142 if (ret) 2143 goto out_quota_failed; 2144 2145 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2146 if (vif->p2p && mvm->p2p_device_vif) 2147 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2148 2149 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2150 2151 iwl_mvm_bt_coex_vif_change(mvm); 2152 2153 /* we don't support TDLS during DCM */ 2154 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2155 iwl_mvm_teardown_tdls_peers(mvm); 2156 2157 goto out_unlock; 2158 2159 out_quota_failed: 2160 iwl_mvm_power_update_mac(mvm); 2161 mvmvif->ap_ibss_active = false; 2162 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2163 out_rm_mcast: 2164 iwl_mvm_rm_mcast_sta(mvm, vif); 2165 out_unbind: 2166 iwl_mvm_binding_remove_vif(mvm, vif); 2167 out_remove: 2168 iwl_mvm_mac_ctxt_remove(mvm, vif); 2169 out_unlock: 2170 mutex_unlock(&mvm->mutex); 2171 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2172 return ret; 2173 } 2174 2175 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2176 struct ieee80211_vif *vif) 2177 { 2178 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2179 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2180 2181 iwl_mvm_prepare_mac_removal(mvm, vif); 2182 2183 mutex_lock(&mvm->mutex); 2184 2185 /* Handle AP stop while in CSA */ 2186 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2187 iwl_mvm_remove_time_event(mvm, mvmvif, 2188 &mvmvif->time_event_data); 2189 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2190 mvmvif->csa_countdown = false; 2191 } 2192 2193 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2194 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2195 mvm->csa_tx_block_bcn_timeout = 0; 2196 } 2197 2198 mvmvif->ap_ibss_active = false; 2199 mvm->ap_last_beacon_gp2 = 0; 2200 2201 iwl_mvm_bt_coex_vif_change(mvm); 2202 2203 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2204 2205 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2206 if (vif->p2p && mvm->p2p_device_vif) 2207 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2208 2209 iwl_mvm_update_quotas(mvm, false, NULL); 2210 2211 /* 2212 * This is not very nice, but the simplest: 2213 * For older FWs removing the mcast sta before the bcast station may 2214 * cause assert 0x2b00. 2215 * This is fixed in later FW (which will stop beaconing when removing 2216 * bcast station). 2217 * So make the order of removal depend on the TLV 2218 */ 2219 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2220 iwl_mvm_rm_mcast_sta(mvm, vif); 2221 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2222 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2223 iwl_mvm_rm_mcast_sta(mvm, vif); 2224 iwl_mvm_binding_remove_vif(mvm, vif); 2225 2226 iwl_mvm_power_update_mac(mvm); 2227 2228 iwl_mvm_mac_ctxt_remove(mvm, vif); 2229 2230 mutex_unlock(&mvm->mutex); 2231 } 2232 2233 static void 2234 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2235 struct ieee80211_vif *vif, 2236 struct ieee80211_bss_conf *bss_conf, 2237 u32 changes) 2238 { 2239 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2240 2241 /* Changes will be applied when the AP/IBSS is started */ 2242 if (!mvmvif->ap_ibss_active) 2243 return; 2244 2245 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2246 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2247 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2248 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2249 2250 /* Need to send a new beacon template to the FW */ 2251 if (changes & BSS_CHANGED_BEACON && 2252 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2253 IWL_WARN(mvm, "Failed updating beacon data\n"); 2254 2255 if (changes & BSS_CHANGED_TXPOWER) { 2256 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2257 bss_conf->txpower); 2258 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2259 } 2260 } 2261 2262 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2263 struct ieee80211_vif *vif, 2264 struct ieee80211_bss_conf *bss_conf, 2265 u32 changes) 2266 { 2267 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2268 2269 /* 2270 * iwl_mvm_bss_info_changed_station() might call 2271 * iwl_mvm_protect_session(), which reads directly from 2272 * the device (the system time), so make sure it is available. 2273 */ 2274 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2275 return; 2276 2277 mutex_lock(&mvm->mutex); 2278 2279 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2280 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2281 2282 switch (vif->type) { 2283 case NL80211_IFTYPE_STATION: 2284 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2285 break; 2286 case NL80211_IFTYPE_AP: 2287 case NL80211_IFTYPE_ADHOC: 2288 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2289 break; 2290 case NL80211_IFTYPE_MONITOR: 2291 if (changes & BSS_CHANGED_MU_GROUPS) 2292 iwl_mvm_update_mu_groups(mvm, vif); 2293 break; 2294 default: 2295 /* shouldn't happen */ 2296 WARN_ON_ONCE(1); 2297 } 2298 2299 mutex_unlock(&mvm->mutex); 2300 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2301 } 2302 2303 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2304 struct ieee80211_vif *vif, 2305 struct ieee80211_scan_request *hw_req) 2306 { 2307 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2308 int ret; 2309 2310 if (hw_req->req.n_channels == 0 || 2311 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2312 return -EINVAL; 2313 2314 mutex_lock(&mvm->mutex); 2315 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2316 mutex_unlock(&mvm->mutex); 2317 2318 return ret; 2319 } 2320 2321 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2322 struct ieee80211_vif *vif) 2323 { 2324 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2325 2326 mutex_lock(&mvm->mutex); 2327 2328 /* Due to a race condition, it's possible that mac80211 asks 2329 * us to stop a hw_scan when it's already stopped. This can 2330 * happen, for instance, if we stopped the scan ourselves, 2331 * called ieee80211_scan_completed() and the userspace called 2332 * cancel scan scan before ieee80211_scan_work() could run. 2333 * To handle that, simply return if the scan is not running. 2334 */ 2335 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2336 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2337 2338 mutex_unlock(&mvm->mutex); 2339 } 2340 2341 static void 2342 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2343 struct ieee80211_sta *sta, u16 tids, 2344 int num_frames, 2345 enum ieee80211_frame_release_type reason, 2346 bool more_data) 2347 { 2348 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2349 2350 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2351 2352 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2353 tids, more_data, false); 2354 } 2355 2356 static void 2357 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2358 struct ieee80211_sta *sta, u16 tids, 2359 int num_frames, 2360 enum ieee80211_frame_release_type reason, 2361 bool more_data) 2362 { 2363 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2364 2365 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2366 2367 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2368 tids, more_data, true); 2369 } 2370 2371 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2372 enum sta_notify_cmd cmd, 2373 struct ieee80211_sta *sta) 2374 { 2375 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2376 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2377 unsigned long txqs = 0, tids = 0; 2378 int tid; 2379 2380 /* 2381 * If we have TVQM then we get too high queue numbers - luckily 2382 * we really shouldn't get here with that because such hardware 2383 * should have firmware supporting buffer station offload. 2384 */ 2385 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2386 return; 2387 2388 spin_lock_bh(&mvmsta->lock); 2389 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2390 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2391 2392 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2393 continue; 2394 2395 __set_bit(tid_data->txq_id, &txqs); 2396 2397 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2398 continue; 2399 2400 __set_bit(tid, &tids); 2401 } 2402 2403 switch (cmd) { 2404 case STA_NOTIFY_SLEEP: 2405 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2406 ieee80211_sta_set_buffered(sta, tid, true); 2407 2408 if (txqs) 2409 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2410 /* 2411 * The fw updates the STA to be asleep. Tx packets on the Tx 2412 * queues to this station will not be transmitted. The fw will 2413 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2414 */ 2415 break; 2416 case STA_NOTIFY_AWAKE: 2417 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2418 break; 2419 2420 if (txqs) 2421 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2422 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2423 break; 2424 default: 2425 break; 2426 } 2427 spin_unlock_bh(&mvmsta->lock); 2428 } 2429 2430 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2431 struct ieee80211_vif *vif, 2432 enum sta_notify_cmd cmd, 2433 struct ieee80211_sta *sta) 2434 { 2435 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2436 } 2437 2438 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2439 { 2440 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2441 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2442 struct ieee80211_sta *sta; 2443 struct iwl_mvm_sta *mvmsta; 2444 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2445 2446 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2447 return; 2448 2449 rcu_read_lock(); 2450 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2451 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2452 rcu_read_unlock(); 2453 return; 2454 } 2455 2456 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2457 2458 if (!mvmsta->vif || 2459 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2460 rcu_read_unlock(); 2461 return; 2462 } 2463 2464 if (mvmsta->sleeping != sleeping) { 2465 mvmsta->sleeping = sleeping; 2466 __iwl_mvm_mac_sta_notify(mvm->hw, 2467 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2468 sta); 2469 ieee80211_sta_ps_transition(sta, sleeping); 2470 } 2471 2472 if (sleeping) { 2473 switch (notif->type) { 2474 case IWL_MVM_PM_EVENT_AWAKE: 2475 case IWL_MVM_PM_EVENT_ASLEEP: 2476 break; 2477 case IWL_MVM_PM_EVENT_UAPSD: 2478 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2479 break; 2480 case IWL_MVM_PM_EVENT_PS_POLL: 2481 ieee80211_sta_pspoll(sta); 2482 break; 2483 default: 2484 break; 2485 } 2486 } 2487 2488 rcu_read_unlock(); 2489 } 2490 2491 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2492 struct ieee80211_vif *vif, 2493 struct ieee80211_sta *sta) 2494 { 2495 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2496 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2497 2498 /* 2499 * This is called before mac80211 does RCU synchronisation, 2500 * so here we already invalidate our internal RCU-protected 2501 * station pointer. The rest of the code will thus no longer 2502 * be able to find the station this way, and we don't rely 2503 * on further RCU synchronisation after the sta_state() 2504 * callback deleted the station. 2505 */ 2506 mutex_lock(&mvm->mutex); 2507 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2508 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2509 ERR_PTR(-ENOENT)); 2510 2511 mutex_unlock(&mvm->mutex); 2512 } 2513 2514 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2515 const u8 *bssid) 2516 { 2517 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2518 return; 2519 2520 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2521 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2522 return; 2523 } 2524 2525 if (!vif->p2p && 2526 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2527 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2528 return; 2529 } 2530 2531 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2532 } 2533 2534 static void 2535 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2536 struct ieee80211_vif *vif, u8 *peer_addr, 2537 enum nl80211_tdls_operation action) 2538 { 2539 struct iwl_fw_dbg_trigger_tlv *trig; 2540 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2541 2542 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) 2543 return; 2544 2545 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); 2546 tdls_trig = (void *)trig->data; 2547 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 2548 ieee80211_vif_to_wdev(vif), trig)) 2549 return; 2550 2551 if (!(tdls_trig->action_bitmap & BIT(action))) 2552 return; 2553 2554 if (tdls_trig->peer_mode && 2555 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2556 return; 2557 2558 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2559 "TDLS event occurred, peer %pM, action %d", 2560 peer_addr, action); 2561 } 2562 2563 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2564 struct iwl_mvm_sta *mvm_sta) 2565 { 2566 struct iwl_mvm_tid_data *tid_data; 2567 struct sk_buff *skb; 2568 int i; 2569 2570 spin_lock_bh(&mvm_sta->lock); 2571 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2572 tid_data = &mvm_sta->tid_data[i]; 2573 2574 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) { 2575 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 2576 2577 /* 2578 * The first deferred frame should've stopped the MAC 2579 * queues, so we should never get a second deferred 2580 * frame for the RA/TID. 2581 */ 2582 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue)); 2583 ieee80211_free_txskb(mvm->hw, skb); 2584 } 2585 } 2586 spin_unlock_bh(&mvm_sta->lock); 2587 } 2588 2589 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2590 struct ieee80211_vif *vif, 2591 struct ieee80211_sta *sta, 2592 enum ieee80211_sta_state old_state, 2593 enum ieee80211_sta_state new_state) 2594 { 2595 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2596 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2597 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2598 int ret; 2599 2600 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2601 sta->addr, old_state, new_state); 2602 2603 /* this would be a mac80211 bug ... but don't crash */ 2604 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2605 return -EINVAL; 2606 2607 /* 2608 * If we are in a STA removal flow and in DQA mode: 2609 * 2610 * This is after the sync_rcu part, so the queues have already been 2611 * flushed. No more TXs on their way in mac80211's path, and no more in 2612 * the queues. 2613 * Also, we won't be getting any new TX frames for this station. 2614 * What we might have are deferred TX frames that need to be taken care 2615 * of. 2616 * 2617 * Drop any still-queued deferred-frame before removing the STA, and 2618 * make sure the worker is no longer handling frames for this STA. 2619 */ 2620 if (old_state == IEEE80211_STA_NONE && 2621 new_state == IEEE80211_STA_NOTEXIST) { 2622 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2623 flush_work(&mvm->add_stream_wk); 2624 2625 /* 2626 * No need to make sure deferred TX indication is off since the 2627 * worker will already remove it if it was on 2628 */ 2629 } 2630 2631 mutex_lock(&mvm->mutex); 2632 /* track whether or not the station is associated */ 2633 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC; 2634 2635 if (old_state == IEEE80211_STA_NOTEXIST && 2636 new_state == IEEE80211_STA_NONE) { 2637 /* 2638 * Firmware bug - it'll crash if the beacon interval is less 2639 * than 16. We can't avoid connecting at all, so refuse the 2640 * station state change, this will cause mac80211 to abandon 2641 * attempts to connect to this AP, and eventually wpa_s will 2642 * blacklist the AP... 2643 */ 2644 if (vif->type == NL80211_IFTYPE_STATION && 2645 vif->bss_conf.beacon_int < 16) { 2646 IWL_ERR(mvm, 2647 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2648 sta->addr, vif->bss_conf.beacon_int); 2649 ret = -EINVAL; 2650 goto out_unlock; 2651 } 2652 2653 if (sta->tdls && 2654 (vif->p2p || 2655 iwl_mvm_tdls_sta_count(mvm, NULL) == 2656 IWL_MVM_TDLS_STA_COUNT || 2657 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2658 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2659 ret = -EBUSY; 2660 goto out_unlock; 2661 } 2662 2663 ret = iwl_mvm_add_sta(mvm, vif, sta); 2664 if (sta->tdls && ret == 0) { 2665 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2666 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2667 NL80211_TDLS_SETUP); 2668 } 2669 } else if (old_state == IEEE80211_STA_NONE && 2670 new_state == IEEE80211_STA_AUTH) { 2671 /* 2672 * EBS may be disabled due to previous failures reported by FW. 2673 * Reset EBS status here assuming environment has been changed. 2674 */ 2675 mvm->last_ebs_successful = true; 2676 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2677 ret = 0; 2678 } else if (old_state == IEEE80211_STA_AUTH && 2679 new_state == IEEE80211_STA_ASSOC) { 2680 if (vif->type == NL80211_IFTYPE_AP) { 2681 mvmvif->ap_assoc_sta_count++; 2682 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2683 } 2684 2685 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2686 true); 2687 ret = iwl_mvm_update_sta(mvm, vif, sta); 2688 } else if (old_state == IEEE80211_STA_ASSOC && 2689 new_state == IEEE80211_STA_AUTHORIZED) { 2690 2691 /* we don't support TDLS during DCM */ 2692 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2693 iwl_mvm_teardown_tdls_peers(mvm); 2694 2695 if (sta->tdls) 2696 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2697 NL80211_TDLS_ENABLE_LINK); 2698 2699 /* enable beacon filtering */ 2700 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2701 ret = 0; 2702 } else if (old_state == IEEE80211_STA_AUTHORIZED && 2703 new_state == IEEE80211_STA_ASSOC) { 2704 /* disable beacon filtering */ 2705 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 2706 ret = 0; 2707 } else if (old_state == IEEE80211_STA_ASSOC && 2708 new_state == IEEE80211_STA_AUTH) { 2709 if (vif->type == NL80211_IFTYPE_AP) { 2710 mvmvif->ap_assoc_sta_count--; 2711 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2712 } 2713 ret = 0; 2714 } else if (old_state == IEEE80211_STA_AUTH && 2715 new_state == IEEE80211_STA_NONE) { 2716 ret = 0; 2717 } else if (old_state == IEEE80211_STA_NONE && 2718 new_state == IEEE80211_STA_NOTEXIST) { 2719 ret = iwl_mvm_rm_sta(mvm, vif, sta); 2720 if (sta->tdls) { 2721 iwl_mvm_recalc_tdls_state(mvm, vif, false); 2722 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2723 NL80211_TDLS_DISABLE_LINK); 2724 } 2725 } else { 2726 ret = -EIO; 2727 } 2728 out_unlock: 2729 mutex_unlock(&mvm->mutex); 2730 2731 if (sta->tdls && ret == 0) { 2732 if (old_state == IEEE80211_STA_NOTEXIST && 2733 new_state == IEEE80211_STA_NONE) 2734 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2735 else if (old_state == IEEE80211_STA_NONE && 2736 new_state == IEEE80211_STA_NOTEXIST) 2737 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2738 } 2739 2740 return ret; 2741 } 2742 2743 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 2744 { 2745 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2746 2747 mvm->rts_threshold = value; 2748 2749 return 0; 2750 } 2751 2752 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 2753 struct ieee80211_vif *vif, 2754 struct ieee80211_sta *sta, u32 changed) 2755 { 2756 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2757 2758 if (vif->type == NL80211_IFTYPE_STATION && 2759 changed & IEEE80211_RC_NSS_CHANGED) 2760 iwl_mvm_sf_update(mvm, vif, false); 2761 } 2762 2763 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 2764 struct ieee80211_vif *vif, u16 ac, 2765 const struct ieee80211_tx_queue_params *params) 2766 { 2767 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2769 2770 mvmvif->queue_params[ac] = *params; 2771 2772 /* 2773 * No need to update right away, we'll get BSS_CHANGED_QOS 2774 * The exception is P2P_DEVICE interface which needs immediate update. 2775 */ 2776 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2777 int ret; 2778 2779 mutex_lock(&mvm->mutex); 2780 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2781 mutex_unlock(&mvm->mutex); 2782 return ret; 2783 } 2784 return 0; 2785 } 2786 2787 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 2788 struct ieee80211_vif *vif) 2789 { 2790 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2791 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2792 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2793 2794 if (WARN_ON_ONCE(vif->bss_conf.assoc)) 2795 return; 2796 2797 /* 2798 * iwl_mvm_protect_session() reads directly from the device 2799 * (the system time), so make sure it is available. 2800 */ 2801 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 2802 return; 2803 2804 mutex_lock(&mvm->mutex); 2805 /* Try really hard to protect the session and hear a beacon */ 2806 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 2807 mutex_unlock(&mvm->mutex); 2808 2809 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 2810 } 2811 2812 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 2813 struct ieee80211_vif *vif, 2814 struct cfg80211_sched_scan_request *req, 2815 struct ieee80211_scan_ies *ies) 2816 { 2817 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2818 2819 int ret; 2820 2821 mutex_lock(&mvm->mutex); 2822 2823 if (!vif->bss_conf.idle) { 2824 ret = -EBUSY; 2825 goto out; 2826 } 2827 2828 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 2829 2830 out: 2831 mutex_unlock(&mvm->mutex); 2832 return ret; 2833 } 2834 2835 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 2836 struct ieee80211_vif *vif) 2837 { 2838 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2839 int ret; 2840 2841 mutex_lock(&mvm->mutex); 2842 2843 /* Due to a race condition, it's possible that mac80211 asks 2844 * us to stop a sched_scan when it's already stopped. This 2845 * can happen, for instance, if we stopped the scan ourselves, 2846 * called ieee80211_sched_scan_stopped() and the userspace called 2847 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 2848 * could run. To handle this, simply return if the scan is 2849 * not running. 2850 */ 2851 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 2852 mutex_unlock(&mvm->mutex); 2853 return 0; 2854 } 2855 2856 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 2857 mutex_unlock(&mvm->mutex); 2858 iwl_mvm_wait_for_async_handlers(mvm); 2859 2860 return ret; 2861 } 2862 2863 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 2864 enum set_key_cmd cmd, 2865 struct ieee80211_vif *vif, 2866 struct ieee80211_sta *sta, 2867 struct ieee80211_key_conf *key) 2868 { 2869 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2870 struct iwl_mvm_sta *mvmsta; 2871 struct iwl_mvm_key_pn *ptk_pn; 2872 int keyidx = key->keyidx; 2873 int ret; 2874 u8 key_offset; 2875 2876 if (iwlwifi_mod_params.swcrypto) { 2877 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 2878 return -EOPNOTSUPP; 2879 } 2880 2881 switch (key->cipher) { 2882 case WLAN_CIPHER_SUITE_TKIP: 2883 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 2884 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2885 break; 2886 case WLAN_CIPHER_SUITE_CCMP: 2887 case WLAN_CIPHER_SUITE_GCMP: 2888 case WLAN_CIPHER_SUITE_GCMP_256: 2889 if (!iwl_mvm_has_new_tx_api(mvm)) 2890 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2891 break; 2892 case WLAN_CIPHER_SUITE_AES_CMAC: 2893 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2894 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2895 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 2896 break; 2897 case WLAN_CIPHER_SUITE_WEP40: 2898 case WLAN_CIPHER_SUITE_WEP104: 2899 /* For non-client mode, only use WEP keys for TX as we probably 2900 * don't have a station yet anyway and would then have to keep 2901 * track of the keys, linking them to each of the clients/peers 2902 * as they appear. For now, don't do that, for performance WEP 2903 * offload doesn't really matter much, but we need it for some 2904 * other offload features in client mode. 2905 */ 2906 if (vif->type != NL80211_IFTYPE_STATION) 2907 return 0; 2908 break; 2909 default: 2910 /* currently FW supports only one optional cipher scheme */ 2911 if (hw->n_cipher_schemes && 2912 hw->cipher_schemes->cipher == key->cipher) 2913 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2914 else 2915 return -EOPNOTSUPP; 2916 } 2917 2918 mutex_lock(&mvm->mutex); 2919 2920 switch (cmd) { 2921 case SET_KEY: 2922 if ((vif->type == NL80211_IFTYPE_ADHOC || 2923 vif->type == NL80211_IFTYPE_AP) && !sta) { 2924 /* 2925 * GTK on AP interface is a TX-only key, return 0; 2926 * on IBSS they're per-station and because we're lazy 2927 * we don't support them for RX, so do the same. 2928 * CMAC/GMAC in AP/IBSS modes must be done in software. 2929 */ 2930 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 2931 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 2932 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 2933 ret = -EOPNOTSUPP; 2934 else 2935 ret = 0; 2936 2937 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 2938 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 2939 !iwl_mvm_has_new_tx_api(mvm)) { 2940 key->hw_key_idx = STA_KEY_IDX_INVALID; 2941 break; 2942 } 2943 } 2944 2945 /* During FW restart, in order to restore the state as it was, 2946 * don't try to reprogram keys we previously failed for. 2947 */ 2948 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2949 key->hw_key_idx == STA_KEY_IDX_INVALID) { 2950 IWL_DEBUG_MAC80211(mvm, 2951 "skip invalid idx key programming during restart\n"); 2952 ret = 0; 2953 break; 2954 } 2955 2956 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2957 sta && iwl_mvm_has_new_rx_api(mvm) && 2958 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2959 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2960 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2961 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2962 struct ieee80211_key_seq seq; 2963 int tid, q; 2964 2965 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2966 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 2967 ptk_pn = kzalloc(sizeof(*ptk_pn) + 2968 mvm->trans->num_rx_queues * 2969 sizeof(ptk_pn->q[0]), 2970 GFP_KERNEL); 2971 if (!ptk_pn) { 2972 ret = -ENOMEM; 2973 break; 2974 } 2975 2976 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2977 ieee80211_get_key_rx_seq(key, tid, &seq); 2978 for (q = 0; q < mvm->trans->num_rx_queues; q++) 2979 memcpy(ptk_pn->q[q].pn[tid], 2980 seq.ccmp.pn, 2981 IEEE80211_CCMP_PN_LEN); 2982 } 2983 2984 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 2985 } 2986 2987 /* in HW restart reuse the index, otherwise request a new one */ 2988 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2989 key_offset = key->hw_key_idx; 2990 else 2991 key_offset = STA_KEY_IDX_INVALID; 2992 2993 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 2994 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 2995 if (ret) { 2996 IWL_WARN(mvm, "set key failed\n"); 2997 /* 2998 * can't add key for RX, but we don't need it 2999 * in the device for TX so still return 0 3000 */ 3001 key->hw_key_idx = STA_KEY_IDX_INVALID; 3002 ret = 0; 3003 } 3004 3005 break; 3006 case DISABLE_KEY: 3007 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3008 ret = 0; 3009 break; 3010 } 3011 3012 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3013 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3014 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3015 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3016 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3017 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3018 ptk_pn = rcu_dereference_protected( 3019 mvmsta->ptk_pn[keyidx], 3020 lockdep_is_held(&mvm->mutex)); 3021 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3022 if (ptk_pn) 3023 kfree_rcu(ptk_pn, rcu_head); 3024 } 3025 3026 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3027 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3028 break; 3029 default: 3030 ret = -EINVAL; 3031 } 3032 3033 mutex_unlock(&mvm->mutex); 3034 return ret; 3035 } 3036 3037 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3038 struct ieee80211_vif *vif, 3039 struct ieee80211_key_conf *keyconf, 3040 struct ieee80211_sta *sta, 3041 u32 iv32, u16 *phase1key) 3042 { 3043 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3044 3045 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3046 return; 3047 3048 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3049 } 3050 3051 3052 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3053 struct iwl_rx_packet *pkt, void *data) 3054 { 3055 struct iwl_mvm *mvm = 3056 container_of(notif_wait, struct iwl_mvm, notif_wait); 3057 struct iwl_hs20_roc_res *resp; 3058 int resp_len = iwl_rx_packet_payload_len(pkt); 3059 struct iwl_mvm_time_event_data *te_data = data; 3060 3061 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3062 return true; 3063 3064 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3065 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3066 return true; 3067 } 3068 3069 resp = (void *)pkt->data; 3070 3071 IWL_DEBUG_TE(mvm, 3072 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 3073 resp->status, resp->event_unique_id); 3074 3075 te_data->uid = le32_to_cpu(resp->event_unique_id); 3076 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3077 te_data->uid); 3078 3079 spin_lock_bh(&mvm->time_event_lock); 3080 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3081 spin_unlock_bh(&mvm->time_event_lock); 3082 3083 return true; 3084 } 3085 3086 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3087 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3088 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3089 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3090 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3091 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3092 struct ieee80211_channel *channel, 3093 struct ieee80211_vif *vif, 3094 int duration) 3095 { 3096 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3097 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3098 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3099 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3100 struct iwl_notification_wait wait_time_event; 3101 u32 dtim_interval = vif->bss_conf.dtim_period * 3102 vif->bss_conf.beacon_int; 3103 u32 req_dur, delay; 3104 struct iwl_hs20_roc_req aux_roc_req = { 3105 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3106 .id_and_color = 3107 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3108 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3109 /* Set the channel info data */ 3110 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3111 PHY_BAND_24 : PHY_BAND_5, 3112 .channel_info.channel = channel->hw_value, 3113 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3114 /* Set the time and duration */ 3115 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3116 }; 3117 3118 delay = AUX_ROC_MIN_DELAY; 3119 req_dur = MSEC_TO_TU(duration); 3120 3121 /* 3122 * If we are associated we want the delay time to be at least one 3123 * dtim interval so that the FW can wait until after the DTIM and 3124 * then start the time event, this will potentially allow us to 3125 * remain off-channel for the max duration. 3126 * Since we want to use almost a whole dtim interval we would also 3127 * like the delay to be for 2-3 dtim intervals, in case there are 3128 * other time events with higher priority. 3129 */ 3130 if (vif->bss_conf.assoc) { 3131 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3132 /* We cannot remain off-channel longer than the DTIM interval */ 3133 if (dtim_interval <= req_dur) { 3134 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3135 if (req_dur <= AUX_ROC_MIN_DURATION) 3136 req_dur = dtim_interval - 3137 AUX_ROC_MIN_SAFETY_BUFFER; 3138 } 3139 } 3140 3141 aux_roc_req.duration = cpu_to_le32(req_dur); 3142 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3143 3144 IWL_DEBUG_TE(mvm, 3145 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3146 channel->hw_value, req_dur, duration, delay, 3147 dtim_interval); 3148 /* Set the node address */ 3149 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3150 3151 lockdep_assert_held(&mvm->mutex); 3152 3153 spin_lock_bh(&mvm->time_event_lock); 3154 3155 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3156 spin_unlock_bh(&mvm->time_event_lock); 3157 return -EIO; 3158 } 3159 3160 te_data->vif = vif; 3161 te_data->duration = duration; 3162 te_data->id = HOT_SPOT_CMD; 3163 3164 spin_unlock_bh(&mvm->time_event_lock); 3165 3166 /* 3167 * Use a notification wait, which really just processes the 3168 * command response and doesn't wait for anything, in order 3169 * to be able to process the response and get the UID inside 3170 * the RX path. Using CMD_WANT_SKB doesn't work because it 3171 * stores the buffer and then wakes up this thread, by which 3172 * time another notification (that the time event started) 3173 * might already be processed unsuccessfully. 3174 */ 3175 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3176 time_event_response, 3177 ARRAY_SIZE(time_event_response), 3178 iwl_mvm_rx_aux_roc, te_data); 3179 3180 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3181 &aux_roc_req); 3182 3183 if (res) { 3184 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3185 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3186 goto out_clear_te; 3187 } 3188 3189 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3190 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3191 /* should never fail */ 3192 WARN_ON_ONCE(res); 3193 3194 if (res) { 3195 out_clear_te: 3196 spin_lock_bh(&mvm->time_event_lock); 3197 iwl_mvm_te_clear_data(mvm, te_data); 3198 spin_unlock_bh(&mvm->time_event_lock); 3199 } 3200 3201 return res; 3202 } 3203 3204 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3205 struct ieee80211_vif *vif, 3206 struct ieee80211_channel *channel, 3207 int duration, 3208 enum ieee80211_roc_type type) 3209 { 3210 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3211 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3212 struct cfg80211_chan_def chandef; 3213 struct iwl_mvm_phy_ctxt *phy_ctxt; 3214 int ret, i; 3215 3216 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3217 duration, type); 3218 3219 flush_work(&mvm->roc_done_wk); 3220 3221 mutex_lock(&mvm->mutex); 3222 3223 switch (vif->type) { 3224 case NL80211_IFTYPE_STATION: 3225 if (fw_has_capa(&mvm->fw->ucode_capa, 3226 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3227 /* Use aux roc framework (HS20) */ 3228 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3229 vif, duration); 3230 goto out_unlock; 3231 } 3232 IWL_ERR(mvm, "hotspot not supported\n"); 3233 ret = -EINVAL; 3234 goto out_unlock; 3235 case NL80211_IFTYPE_P2P_DEVICE: 3236 /* handle below */ 3237 break; 3238 default: 3239 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3240 ret = -EINVAL; 3241 goto out_unlock; 3242 } 3243 3244 for (i = 0; i < NUM_PHY_CTX; i++) { 3245 phy_ctxt = &mvm->phy_ctxts[i]; 3246 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3247 continue; 3248 3249 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3250 /* 3251 * Unbind the P2P_DEVICE from the current PHY context, 3252 * and if the PHY context is not used remove it. 3253 */ 3254 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3255 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3256 goto out_unlock; 3257 3258 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3259 3260 /* Bind the P2P_DEVICE to the current PHY Context */ 3261 mvmvif->phy_ctxt = phy_ctxt; 3262 3263 ret = iwl_mvm_binding_add_vif(mvm, vif); 3264 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3265 goto out_unlock; 3266 3267 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3268 goto schedule_time_event; 3269 } 3270 } 3271 3272 /* Need to update the PHY context only if the ROC channel changed */ 3273 if (channel == mvmvif->phy_ctxt->channel) 3274 goto schedule_time_event; 3275 3276 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3277 3278 /* 3279 * Change the PHY context configuration as it is currently referenced 3280 * only by the P2P Device MAC 3281 */ 3282 if (mvmvif->phy_ctxt->ref == 1) { 3283 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3284 &chandef, 1, 1); 3285 if (ret) 3286 goto out_unlock; 3287 } else { 3288 /* 3289 * The PHY context is shared with other MACs. Need to remove the 3290 * P2P Device from the binding, allocate an new PHY context and 3291 * create a new binding 3292 */ 3293 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3294 if (!phy_ctxt) { 3295 ret = -ENOSPC; 3296 goto out_unlock; 3297 } 3298 3299 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3300 1, 1); 3301 if (ret) { 3302 IWL_ERR(mvm, "Failed to change PHY context\n"); 3303 goto out_unlock; 3304 } 3305 3306 /* Unbind the P2P_DEVICE from the current PHY context */ 3307 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3308 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3309 goto out_unlock; 3310 3311 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3312 3313 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3314 mvmvif->phy_ctxt = phy_ctxt; 3315 3316 ret = iwl_mvm_binding_add_vif(mvm, vif); 3317 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3318 goto out_unlock; 3319 3320 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3321 } 3322 3323 schedule_time_event: 3324 /* Schedule the time events */ 3325 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3326 3327 out_unlock: 3328 mutex_unlock(&mvm->mutex); 3329 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3330 return ret; 3331 } 3332 3333 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3334 { 3335 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3336 3337 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3338 3339 mutex_lock(&mvm->mutex); 3340 iwl_mvm_stop_roc(mvm); 3341 mutex_unlock(&mvm->mutex); 3342 3343 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3344 return 0; 3345 } 3346 3347 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3348 struct ieee80211_chanctx_conf *ctx) 3349 { 3350 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3351 struct iwl_mvm_phy_ctxt *phy_ctxt; 3352 int ret; 3353 3354 lockdep_assert_held(&mvm->mutex); 3355 3356 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3357 3358 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3359 if (!phy_ctxt) { 3360 ret = -ENOSPC; 3361 goto out; 3362 } 3363 3364 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3365 ctx->rx_chains_static, 3366 ctx->rx_chains_dynamic); 3367 if (ret) { 3368 IWL_ERR(mvm, "Failed to add PHY context\n"); 3369 goto out; 3370 } 3371 3372 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3373 *phy_ctxt_id = phy_ctxt->id; 3374 out: 3375 return ret; 3376 } 3377 3378 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3379 struct ieee80211_chanctx_conf *ctx) 3380 { 3381 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3382 int ret; 3383 3384 mutex_lock(&mvm->mutex); 3385 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3386 mutex_unlock(&mvm->mutex); 3387 3388 return ret; 3389 } 3390 3391 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3392 struct ieee80211_chanctx_conf *ctx) 3393 { 3394 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3395 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3396 3397 lockdep_assert_held(&mvm->mutex); 3398 3399 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3400 } 3401 3402 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3403 struct ieee80211_chanctx_conf *ctx) 3404 { 3405 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3406 3407 mutex_lock(&mvm->mutex); 3408 __iwl_mvm_remove_chanctx(mvm, ctx); 3409 mutex_unlock(&mvm->mutex); 3410 } 3411 3412 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3413 struct ieee80211_chanctx_conf *ctx, 3414 u32 changed) 3415 { 3416 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3417 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3418 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3419 3420 if (WARN_ONCE((phy_ctxt->ref > 1) && 3421 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3422 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3423 IEEE80211_CHANCTX_CHANGE_RADAR | 3424 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3425 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3426 phy_ctxt->ref, changed)) 3427 return; 3428 3429 mutex_lock(&mvm->mutex); 3430 3431 /* we are only changing the min_width, may be a noop */ 3432 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 3433 if (phy_ctxt->width == ctx->min_def.width) 3434 goto out_unlock; 3435 3436 /* we are just toggling between 20_NOHT and 20 */ 3437 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 3438 ctx->min_def.width <= NL80211_CHAN_WIDTH_20) 3439 goto out_unlock; 3440 } 3441 3442 iwl_mvm_bt_coex_vif_change(mvm); 3443 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3444 ctx->rx_chains_static, 3445 ctx->rx_chains_dynamic); 3446 3447 out_unlock: 3448 mutex_unlock(&mvm->mutex); 3449 } 3450 3451 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3452 struct ieee80211_vif *vif, 3453 struct ieee80211_chanctx_conf *ctx, 3454 bool switching_chanctx) 3455 { 3456 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3457 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3458 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3459 int ret; 3460 3461 lockdep_assert_held(&mvm->mutex); 3462 3463 mvmvif->phy_ctxt = phy_ctxt; 3464 3465 switch (vif->type) { 3466 case NL80211_IFTYPE_AP: 3467 /* only needed if we're switching chanctx (i.e. during CSA) */ 3468 if (switching_chanctx) { 3469 mvmvif->ap_ibss_active = true; 3470 break; 3471 } 3472 case NL80211_IFTYPE_ADHOC: 3473 /* 3474 * The AP binding flow is handled as part of the start_ap flow 3475 * (in bss_info_changed), similarly for IBSS. 3476 */ 3477 ret = 0; 3478 goto out; 3479 case NL80211_IFTYPE_STATION: 3480 break; 3481 case NL80211_IFTYPE_MONITOR: 3482 /* always disable PS when a monitor interface is active */ 3483 mvmvif->ps_disabled = true; 3484 break; 3485 default: 3486 ret = -EINVAL; 3487 goto out; 3488 } 3489 3490 ret = iwl_mvm_binding_add_vif(mvm, vif); 3491 if (ret) 3492 goto out; 3493 3494 /* 3495 * Power state must be updated before quotas, 3496 * otherwise fw will complain. 3497 */ 3498 iwl_mvm_power_update_mac(mvm); 3499 3500 /* Setting the quota at this stage is only required for monitor 3501 * interfaces. For the other types, the bss_info changed flow 3502 * will handle quota settings. 3503 */ 3504 if (vif->type == NL80211_IFTYPE_MONITOR) { 3505 mvmvif->monitor_active = true; 3506 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3507 if (ret) 3508 goto out_remove_binding; 3509 3510 ret = iwl_mvm_add_snif_sta(mvm, vif); 3511 if (ret) 3512 goto out_remove_binding; 3513 3514 } 3515 3516 /* Handle binding during CSA */ 3517 if (vif->type == NL80211_IFTYPE_AP) { 3518 iwl_mvm_update_quotas(mvm, false, NULL); 3519 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3520 } 3521 3522 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3523 u32 duration = 2 * vif->bss_conf.beacon_int; 3524 3525 /* iwl_mvm_protect_session() reads directly from the 3526 * device (the system time), so make sure it is 3527 * available. 3528 */ 3529 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3530 if (ret) 3531 goto out_remove_binding; 3532 3533 /* Protect the session to make sure we hear the first 3534 * beacon on the new channel. 3535 */ 3536 iwl_mvm_protect_session(mvm, vif, duration, duration, 3537 vif->bss_conf.beacon_int / 2, 3538 true); 3539 3540 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3541 3542 iwl_mvm_update_quotas(mvm, false, NULL); 3543 } 3544 3545 goto out; 3546 3547 out_remove_binding: 3548 iwl_mvm_binding_remove_vif(mvm, vif); 3549 iwl_mvm_power_update_mac(mvm); 3550 out: 3551 if (ret) 3552 mvmvif->phy_ctxt = NULL; 3553 return ret; 3554 } 3555 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3556 struct ieee80211_vif *vif, 3557 struct ieee80211_chanctx_conf *ctx) 3558 { 3559 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3560 int ret; 3561 3562 mutex_lock(&mvm->mutex); 3563 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3564 mutex_unlock(&mvm->mutex); 3565 3566 return ret; 3567 } 3568 3569 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3570 struct ieee80211_vif *vif, 3571 struct ieee80211_chanctx_conf *ctx, 3572 bool switching_chanctx) 3573 { 3574 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3575 struct ieee80211_vif *disabled_vif = NULL; 3576 3577 lockdep_assert_held(&mvm->mutex); 3578 3579 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3580 3581 switch (vif->type) { 3582 case NL80211_IFTYPE_ADHOC: 3583 goto out; 3584 case NL80211_IFTYPE_MONITOR: 3585 mvmvif->monitor_active = false; 3586 mvmvif->ps_disabled = false; 3587 iwl_mvm_rm_snif_sta(mvm, vif); 3588 break; 3589 case NL80211_IFTYPE_AP: 3590 /* This part is triggered only during CSA */ 3591 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3592 goto out; 3593 3594 mvmvif->csa_countdown = false; 3595 3596 /* Set CS bit on all the stations */ 3597 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3598 3599 /* Save blocked iface, the timeout is set on the next beacon */ 3600 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3601 3602 mvmvif->ap_ibss_active = false; 3603 break; 3604 case NL80211_IFTYPE_STATION: 3605 if (!switching_chanctx) 3606 break; 3607 3608 disabled_vif = vif; 3609 3610 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3611 break; 3612 default: 3613 break; 3614 } 3615 3616 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3617 iwl_mvm_binding_remove_vif(mvm, vif); 3618 3619 out: 3620 mvmvif->phy_ctxt = NULL; 3621 iwl_mvm_power_update_mac(mvm); 3622 } 3623 3624 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3625 struct ieee80211_vif *vif, 3626 struct ieee80211_chanctx_conf *ctx) 3627 { 3628 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3629 3630 mutex_lock(&mvm->mutex); 3631 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3632 mutex_unlock(&mvm->mutex); 3633 } 3634 3635 static int 3636 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3637 struct ieee80211_vif_chanctx_switch *vifs) 3638 { 3639 int ret; 3640 3641 mutex_lock(&mvm->mutex); 3642 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3643 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3644 3645 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3646 if (ret) { 3647 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3648 goto out_reassign; 3649 } 3650 3651 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3652 true); 3653 if (ret) { 3654 IWL_ERR(mvm, 3655 "failed to assign new_ctx during channel switch\n"); 3656 goto out_remove; 3657 } 3658 3659 /* we don't support TDLS during DCM - can be caused by channel switch */ 3660 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3661 iwl_mvm_teardown_tdls_peers(mvm); 3662 3663 goto out; 3664 3665 out_remove: 3666 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3667 3668 out_reassign: 3669 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3670 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3671 goto out_restart; 3672 } 3673 3674 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3675 true)) { 3676 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3677 goto out_restart; 3678 } 3679 3680 goto out; 3681 3682 out_restart: 3683 /* things keep failing, better restart the hw */ 3684 iwl_mvm_nic_restart(mvm, false); 3685 3686 out: 3687 mutex_unlock(&mvm->mutex); 3688 3689 return ret; 3690 } 3691 3692 static int 3693 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 3694 struct ieee80211_vif_chanctx_switch *vifs) 3695 { 3696 int ret; 3697 3698 mutex_lock(&mvm->mutex); 3699 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3700 3701 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3702 true); 3703 if (ret) { 3704 IWL_ERR(mvm, 3705 "failed to assign new_ctx during channel switch\n"); 3706 goto out_reassign; 3707 } 3708 3709 goto out; 3710 3711 out_reassign: 3712 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3713 true)) { 3714 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3715 goto out_restart; 3716 } 3717 3718 goto out; 3719 3720 out_restart: 3721 /* things keep failing, better restart the hw */ 3722 iwl_mvm_nic_restart(mvm, false); 3723 3724 out: 3725 mutex_unlock(&mvm->mutex); 3726 3727 return ret; 3728 } 3729 3730 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 3731 struct ieee80211_vif_chanctx_switch *vifs, 3732 int n_vifs, 3733 enum ieee80211_chanctx_switch_mode mode) 3734 { 3735 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3736 int ret; 3737 3738 /* we only support a single-vif right now */ 3739 if (n_vifs > 1) 3740 return -EOPNOTSUPP; 3741 3742 switch (mode) { 3743 case CHANCTX_SWMODE_SWAP_CONTEXTS: 3744 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 3745 break; 3746 case CHANCTX_SWMODE_REASSIGN_VIF: 3747 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 3748 break; 3749 default: 3750 ret = -EOPNOTSUPP; 3751 break; 3752 } 3753 3754 return ret; 3755 } 3756 3757 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 3758 { 3759 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3760 3761 return mvm->ibss_manager; 3762 } 3763 3764 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 3765 struct ieee80211_sta *sta, 3766 bool set) 3767 { 3768 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3769 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3770 3771 if (!mvm_sta || !mvm_sta->vif) { 3772 IWL_ERR(mvm, "Station is not associated to a vif\n"); 3773 return -EINVAL; 3774 } 3775 3776 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 3777 } 3778 3779 #ifdef CONFIG_NL80211_TESTMODE 3780 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 3781 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 3782 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 3783 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 3784 }; 3785 3786 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 3787 struct ieee80211_vif *vif, 3788 void *data, int len) 3789 { 3790 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 3791 int err; 3792 u32 noa_duration; 3793 3794 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy, 3795 NULL); 3796 if (err) 3797 return err; 3798 3799 if (!tb[IWL_MVM_TM_ATTR_CMD]) 3800 return -EINVAL; 3801 3802 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 3803 case IWL_MVM_TM_CMD_SET_NOA: 3804 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 3805 !vif->bss_conf.enable_beacon || 3806 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 3807 return -EINVAL; 3808 3809 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 3810 if (noa_duration >= vif->bss_conf.beacon_int) 3811 return -EINVAL; 3812 3813 mvm->noa_duration = noa_duration; 3814 mvm->noa_vif = vif; 3815 3816 return iwl_mvm_update_quotas(mvm, false, NULL); 3817 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 3818 /* must be associated client vif - ignore authorized */ 3819 if (!vif || vif->type != NL80211_IFTYPE_STATION || 3820 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 3821 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 3822 return -EINVAL; 3823 3824 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 3825 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3826 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3827 } 3828 3829 return -EOPNOTSUPP; 3830 } 3831 3832 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 3833 struct ieee80211_vif *vif, 3834 void *data, int len) 3835 { 3836 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3837 int err; 3838 3839 mutex_lock(&mvm->mutex); 3840 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 3841 mutex_unlock(&mvm->mutex); 3842 3843 return err; 3844 } 3845 #endif 3846 3847 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 3848 struct ieee80211_vif *vif, 3849 struct ieee80211_channel_switch *chsw) 3850 { 3851 /* By implementing this operation, we prevent mac80211 from 3852 * starting its own channel switch timer, so that we can call 3853 * ieee80211_chswitch_done() ourselves at the right time 3854 * (which is when the absence time event starts). 3855 */ 3856 3857 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 3858 "dummy channel switch op\n"); 3859 } 3860 3861 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 3862 struct ieee80211_vif *vif, 3863 struct ieee80211_channel_switch *chsw) 3864 { 3865 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3866 struct ieee80211_vif *csa_vif; 3867 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3868 u32 apply_time; 3869 int ret; 3870 3871 mutex_lock(&mvm->mutex); 3872 3873 mvmvif->csa_failed = false; 3874 3875 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 3876 chsw->chandef.center_freq1); 3877 3878 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 3879 ieee80211_vif_to_wdev(vif), 3880 FW_DBG_TRIGGER_CHANNEL_SWITCH); 3881 3882 switch (vif->type) { 3883 case NL80211_IFTYPE_AP: 3884 csa_vif = 3885 rcu_dereference_protected(mvm->csa_vif, 3886 lockdep_is_held(&mvm->mutex)); 3887 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 3888 "Another CSA is already in progress")) { 3889 ret = -EBUSY; 3890 goto out_unlock; 3891 } 3892 3893 /* we still didn't unblock tx. prevent new CS meanwhile */ 3894 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 3895 lockdep_is_held(&mvm->mutex))) { 3896 ret = -EBUSY; 3897 goto out_unlock; 3898 } 3899 3900 rcu_assign_pointer(mvm->csa_vif, vif); 3901 3902 if (WARN_ONCE(mvmvif->csa_countdown, 3903 "Previous CSA countdown didn't complete")) { 3904 ret = -EBUSY; 3905 goto out_unlock; 3906 } 3907 3908 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 3909 3910 break; 3911 case NL80211_IFTYPE_STATION: 3912 /* Schedule the time event to a bit before beacon 1, 3913 * to make sure we're in the new channel when the 3914 * GO/AP arrives. In case count <= 1 immediately schedule the 3915 * TE (this might result with some packet loss or connection 3916 * loss). 3917 */ 3918 if (chsw->count <= 1) 3919 apply_time = 0; 3920 else 3921 apply_time = chsw->device_timestamp + 3922 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 3923 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 3924 3925 if (chsw->block_tx) 3926 iwl_mvm_csa_client_absent(mvm, vif); 3927 3928 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 3929 apply_time); 3930 if (mvmvif->bf_data.bf_enabled) { 3931 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3932 if (ret) 3933 goto out_unlock; 3934 } 3935 3936 break; 3937 default: 3938 break; 3939 } 3940 3941 mvmvif->ps_disabled = true; 3942 3943 ret = iwl_mvm_power_update_ps(mvm); 3944 if (ret) 3945 goto out_unlock; 3946 3947 /* we won't be on this channel any longer */ 3948 iwl_mvm_teardown_tdls_peers(mvm); 3949 3950 out_unlock: 3951 mutex_unlock(&mvm->mutex); 3952 3953 return ret; 3954 } 3955 3956 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 3957 struct ieee80211_vif *vif) 3958 { 3959 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3960 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3961 int ret; 3962 3963 mutex_lock(&mvm->mutex); 3964 3965 if (mvmvif->csa_failed) { 3966 mvmvif->csa_failed = false; 3967 ret = -EIO; 3968 goto out_unlock; 3969 } 3970 3971 if (vif->type == NL80211_IFTYPE_STATION) { 3972 struct iwl_mvm_sta *mvmsta; 3973 3974 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 3975 mvmvif->ap_sta_id); 3976 3977 if (WARN_ON(!mvmsta)) { 3978 ret = -EIO; 3979 goto out_unlock; 3980 } 3981 3982 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 3983 3984 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3985 3986 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3987 if (ret) 3988 goto out_unlock; 3989 3990 iwl_mvm_stop_session_protection(mvm, vif); 3991 } 3992 3993 mvmvif->ps_disabled = false; 3994 3995 ret = iwl_mvm_power_update_ps(mvm); 3996 3997 out_unlock: 3998 mutex_unlock(&mvm->mutex); 3999 4000 return ret; 4001 } 4002 4003 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4004 { 4005 int i; 4006 4007 if (!iwl_mvm_has_new_tx_api(mvm)) { 4008 if (drop) { 4009 mutex_lock(&mvm->mutex); 4010 iwl_mvm_flush_tx_path(mvm, 4011 iwl_mvm_flushable_queues(mvm) & queues, 0); 4012 mutex_unlock(&mvm->mutex); 4013 } else { 4014 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4015 } 4016 return; 4017 } 4018 4019 mutex_lock(&mvm->mutex); 4020 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4021 struct ieee80211_sta *sta; 4022 4023 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4024 lockdep_is_held(&mvm->mutex)); 4025 if (IS_ERR_OR_NULL(sta)) 4026 continue; 4027 4028 if (drop) 4029 iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0); 4030 else 4031 iwl_mvm_wait_sta_queues_empty(mvm, 4032 iwl_mvm_sta_from_mac80211(sta)); 4033 } 4034 mutex_unlock(&mvm->mutex); 4035 } 4036 4037 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4038 struct ieee80211_vif *vif, u32 queues, bool drop) 4039 { 4040 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4041 struct iwl_mvm_vif *mvmvif; 4042 struct iwl_mvm_sta *mvmsta; 4043 struct ieee80211_sta *sta; 4044 int i; 4045 u32 msk = 0; 4046 4047 if (!vif) { 4048 iwl_mvm_flush_no_vif(mvm, queues, drop); 4049 return; 4050 } 4051 4052 if (vif->type != NL80211_IFTYPE_STATION) 4053 return; 4054 4055 /* Make sure we're done with the deferred traffic before flushing */ 4056 flush_work(&mvm->add_stream_wk); 4057 4058 mutex_lock(&mvm->mutex); 4059 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4060 4061 /* flush the AP-station and all TDLS peers */ 4062 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4063 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4064 lockdep_is_held(&mvm->mutex)); 4065 if (IS_ERR_OR_NULL(sta)) 4066 continue; 4067 4068 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4069 if (mvmsta->vif != vif) 4070 continue; 4071 4072 /* make sure only TDLS peers or the AP are flushed */ 4073 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4074 4075 if (drop) { 4076 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4077 IWL_ERR(mvm, "flush request fail\n"); 4078 } else { 4079 msk |= mvmsta->tfd_queue_msk; 4080 if (iwl_mvm_has_new_tx_api(mvm)) 4081 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4082 } 4083 } 4084 4085 mutex_unlock(&mvm->mutex); 4086 4087 /* this can take a while, and we may need/want other operations 4088 * to succeed while doing this, so do it without the mutex held 4089 */ 4090 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4091 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4092 } 4093 4094 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4095 struct survey_info *survey) 4096 { 4097 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4098 int ret; 4099 4100 memset(survey, 0, sizeof(*survey)); 4101 4102 /* only support global statistics right now */ 4103 if (idx != 0) 4104 return -ENOENT; 4105 4106 if (!fw_has_capa(&mvm->fw->ucode_capa, 4107 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4108 return -ENOENT; 4109 4110 mutex_lock(&mvm->mutex); 4111 4112 if (iwl_mvm_firmware_running(mvm)) { 4113 ret = iwl_mvm_request_statistics(mvm, false); 4114 if (ret) 4115 goto out; 4116 } 4117 4118 survey->filled = SURVEY_INFO_TIME | 4119 SURVEY_INFO_TIME_RX | 4120 SURVEY_INFO_TIME_TX | 4121 SURVEY_INFO_TIME_SCAN; 4122 survey->time = mvm->accu_radio_stats.on_time_rf + 4123 mvm->radio_stats.on_time_rf; 4124 do_div(survey->time, USEC_PER_MSEC); 4125 4126 survey->time_rx = mvm->accu_radio_stats.rx_time + 4127 mvm->radio_stats.rx_time; 4128 do_div(survey->time_rx, USEC_PER_MSEC); 4129 4130 survey->time_tx = mvm->accu_radio_stats.tx_time + 4131 mvm->radio_stats.tx_time; 4132 do_div(survey->time_tx, USEC_PER_MSEC); 4133 4134 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4135 mvm->radio_stats.on_time_scan; 4136 do_div(survey->time_scan, USEC_PER_MSEC); 4137 4138 ret = 0; 4139 out: 4140 mutex_unlock(&mvm->mutex); 4141 return ret; 4142 } 4143 4144 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4145 struct ieee80211_vif *vif, 4146 struct ieee80211_sta *sta, 4147 struct station_info *sinfo) 4148 { 4149 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4150 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4151 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4152 4153 if (mvmsta->avg_energy) { 4154 sinfo->signal_avg = mvmsta->avg_energy; 4155 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); 4156 } 4157 4158 if (!fw_has_capa(&mvm->fw->ucode_capa, 4159 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4160 return; 4161 4162 /* if beacon filtering isn't on mac80211 does it anyway */ 4163 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4164 return; 4165 4166 if (!vif->bss_conf.assoc) 4167 return; 4168 4169 mutex_lock(&mvm->mutex); 4170 4171 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4172 goto unlock; 4173 4174 if (iwl_mvm_request_statistics(mvm, false)) 4175 goto unlock; 4176 4177 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4178 mvmvif->beacon_stats.accu_num_beacons; 4179 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX); 4180 if (mvmvif->beacon_stats.avg_signal) { 4181 /* firmware only reports a value after RXing a few beacons */ 4182 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4183 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4184 } 4185 unlock: 4186 mutex_unlock(&mvm->mutex); 4187 } 4188 4189 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4190 struct ieee80211_vif *vif, 4191 const struct ieee80211_event *event) 4192 { 4193 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4194 do { \ 4195 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4196 break; \ 4197 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4198 } while (0) 4199 4200 struct iwl_fw_dbg_trigger_tlv *trig; 4201 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4202 4203 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 4204 return; 4205 4206 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 4207 trig_mlme = (void *)trig->data; 4208 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4209 ieee80211_vif_to_wdev(vif), trig)) 4210 return; 4211 4212 if (event->u.mlme.data == ASSOC_EVENT) { 4213 if (event->u.mlme.status == MLME_DENIED) 4214 CHECK_MLME_TRIGGER(stop_assoc_denied, 4215 "DENIED ASSOC: reason %d", 4216 event->u.mlme.reason); 4217 else if (event->u.mlme.status == MLME_TIMEOUT) 4218 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4219 "ASSOC TIMEOUT"); 4220 } else if (event->u.mlme.data == AUTH_EVENT) { 4221 if (event->u.mlme.status == MLME_DENIED) 4222 CHECK_MLME_TRIGGER(stop_auth_denied, 4223 "DENIED AUTH: reason %d", 4224 event->u.mlme.reason); 4225 else if (event->u.mlme.status == MLME_TIMEOUT) 4226 CHECK_MLME_TRIGGER(stop_auth_timeout, 4227 "AUTH TIMEOUT"); 4228 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4229 CHECK_MLME_TRIGGER(stop_rx_deauth, 4230 "DEAUTH RX %d", event->u.mlme.reason); 4231 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4232 CHECK_MLME_TRIGGER(stop_tx_deauth, 4233 "DEAUTH TX %d", event->u.mlme.reason); 4234 } 4235 #undef CHECK_MLME_TRIGGER 4236 } 4237 4238 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4239 struct ieee80211_vif *vif, 4240 const struct ieee80211_event *event) 4241 { 4242 struct iwl_fw_dbg_trigger_tlv *trig; 4243 struct iwl_fw_dbg_trigger_ba *ba_trig; 4244 4245 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4246 return; 4247 4248 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4249 ba_trig = (void *)trig->data; 4250 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4251 ieee80211_vif_to_wdev(vif), trig)) 4252 return; 4253 4254 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4255 return; 4256 4257 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4258 "BAR received from %pM, tid %d, ssn %d", 4259 event->u.ba.sta->addr, event->u.ba.tid, 4260 event->u.ba.ssn); 4261 } 4262 4263 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4264 struct ieee80211_vif *vif, 4265 const struct ieee80211_event *event) 4266 { 4267 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4268 4269 switch (event->type) { 4270 case MLME_EVENT: 4271 iwl_mvm_event_mlme_callback(mvm, vif, event); 4272 break; 4273 case BAR_RX_EVENT: 4274 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4275 break; 4276 case BA_FRAME_TIMEOUT: 4277 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 4278 event->u.ba.tid); 4279 break; 4280 default: 4281 break; 4282 } 4283 } 4284 4285 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4286 struct iwl_mvm_internal_rxq_notif *notif, 4287 u32 size) 4288 { 4289 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4290 int ret; 4291 4292 lockdep_assert_held(&mvm->mutex); 4293 4294 if (!iwl_mvm_has_new_rx_api(mvm)) 4295 return; 4296 4297 notif->cookie = mvm->queue_sync_cookie; 4298 4299 if (notif->sync) 4300 atomic_set(&mvm->queue_sync_counter, 4301 mvm->trans->num_rx_queues); 4302 4303 /* TODO - remove this when we have RXQ config API */ 4304 if (mvm->trans->cfg->device_family == IWL_DEVICE_FAMILY_A000) { 4305 qmask = BIT(0); 4306 if (notif->sync) 4307 atomic_set(&mvm->queue_sync_counter, 1); 4308 } 4309 4310 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4311 if (ret) { 4312 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4313 goto out; 4314 } 4315 4316 if (notif->sync) { 4317 ret = wait_event_timeout(mvm->rx_sync_waitq, 4318 atomic_read(&mvm->queue_sync_counter) == 0 || 4319 iwl_mvm_is_radio_killed(mvm), 4320 HZ); 4321 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 4322 } 4323 4324 out: 4325 atomic_set(&mvm->queue_sync_counter, 0); 4326 mvm->queue_sync_cookie++; 4327 } 4328 4329 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4330 { 4331 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4332 struct iwl_mvm_internal_rxq_notif data = { 4333 .type = IWL_MVM_RXQ_EMPTY, 4334 .sync = 1, 4335 }; 4336 4337 mutex_lock(&mvm->mutex); 4338 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4339 mutex_unlock(&mvm->mutex); 4340 } 4341 4342 const struct ieee80211_ops iwl_mvm_hw_ops = { 4343 .tx = iwl_mvm_mac_tx, 4344 .ampdu_action = iwl_mvm_mac_ampdu_action, 4345 .start = iwl_mvm_mac_start, 4346 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4347 .stop = iwl_mvm_mac_stop, 4348 .add_interface = iwl_mvm_mac_add_interface, 4349 .remove_interface = iwl_mvm_mac_remove_interface, 4350 .config = iwl_mvm_mac_config, 4351 .prepare_multicast = iwl_mvm_prepare_multicast, 4352 .configure_filter = iwl_mvm_configure_filter, 4353 .config_iface_filter = iwl_mvm_config_iface_filter, 4354 .bss_info_changed = iwl_mvm_bss_info_changed, 4355 .hw_scan = iwl_mvm_mac_hw_scan, 4356 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4357 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4358 .sta_state = iwl_mvm_mac_sta_state, 4359 .sta_notify = iwl_mvm_mac_sta_notify, 4360 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4361 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4362 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4363 .sta_rc_update = iwl_mvm_sta_rc_update, 4364 .conf_tx = iwl_mvm_mac_conf_tx, 4365 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4366 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4367 .flush = iwl_mvm_mac_flush, 4368 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4369 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4370 .set_key = iwl_mvm_mac_set_key, 4371 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4372 .remain_on_channel = iwl_mvm_roc, 4373 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4374 .add_chanctx = iwl_mvm_add_chanctx, 4375 .remove_chanctx = iwl_mvm_remove_chanctx, 4376 .change_chanctx = iwl_mvm_change_chanctx, 4377 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4378 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4379 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4380 4381 .start_ap = iwl_mvm_start_ap_ibss, 4382 .stop_ap = iwl_mvm_stop_ap_ibss, 4383 .join_ibss = iwl_mvm_start_ap_ibss, 4384 .leave_ibss = iwl_mvm_stop_ap_ibss, 4385 4386 .tx_last_beacon = iwl_mvm_tx_last_beacon, 4387 4388 .set_tim = iwl_mvm_set_tim, 4389 4390 .channel_switch = iwl_mvm_channel_switch, 4391 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4392 .post_channel_switch = iwl_mvm_post_channel_switch, 4393 4394 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4395 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4396 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4397 4398 .event_callback = iwl_mvm_mac_event_callback, 4399 4400 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4401 4402 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4403 4404 #ifdef CONFIG_PM_SLEEP 4405 /* look at d3.c */ 4406 .suspend = iwl_mvm_suspend, 4407 .resume = iwl_mvm_resume, 4408 .set_wakeup = iwl_mvm_set_wakeup, 4409 .set_rekey_data = iwl_mvm_set_rekey_data, 4410 #if IS_ENABLED(CONFIG_IPV6) 4411 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4412 #endif 4413 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4414 #endif 4415 .get_survey = iwl_mvm_mac_get_survey, 4416 .sta_statistics = iwl_mvm_mac_sta_statistics, 4417 }; 4418