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 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc && 1903 mvmvif->lqm_active) 1904 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT, 1905 0, 0); 1906 1907 /* 1908 * If we're not associated yet, take the (new) BSSID before associating 1909 * so the firmware knows. If we're already associated, then use the old 1910 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 1911 * branch for disassociation below. 1912 */ 1913 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 1914 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1915 1916 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 1917 if (ret) 1918 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 1919 1920 /* after sending it once, adopt mac80211 data */ 1921 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1922 mvmvif->associated = bss_conf->assoc; 1923 1924 if (changes & BSS_CHANGED_ASSOC) { 1925 if (bss_conf->assoc) { 1926 /* clear statistics to get clean beacon counter */ 1927 iwl_mvm_request_statistics(mvm, true); 1928 memset(&mvmvif->beacon_stats, 0, 1929 sizeof(mvmvif->beacon_stats)); 1930 1931 /* add quota for this interface */ 1932 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1933 if (ret) { 1934 IWL_ERR(mvm, "failed to update quotas\n"); 1935 return; 1936 } 1937 1938 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1939 &mvm->status)) { 1940 /* 1941 * If we're restarting then the firmware will 1942 * obviously have lost synchronisation with 1943 * the AP. It will attempt to synchronise by 1944 * itself, but we can make it more reliable by 1945 * scheduling a session protection time event. 1946 * 1947 * The firmware needs to receive a beacon to 1948 * catch up with synchronisation, use 110% of 1949 * the beacon interval. 1950 * 1951 * Set a large maximum delay to allow for more 1952 * than a single interface. 1953 */ 1954 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 1955 iwl_mvm_protect_session(mvm, vif, dur, dur, 1956 5 * dur, false); 1957 } 1958 1959 iwl_mvm_sf_update(mvm, vif, false); 1960 iwl_mvm_power_vif_assoc(mvm, vif); 1961 if (vif->p2p) { 1962 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 1963 iwl_mvm_update_smps(mvm, vif, 1964 IWL_MVM_SMPS_REQ_PROT, 1965 IEEE80211_SMPS_DYNAMIC); 1966 } 1967 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 1968 /* 1969 * If update fails - SF might be running in associated 1970 * mode while disassociated - which is forbidden. 1971 */ 1972 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 1973 "Failed to update SF upon disassociation\n"); 1974 1975 /* 1976 * If we get an assert during the connection (after the 1977 * station has been added, but before the vif is set 1978 * to associated), mac80211 will re-add the station and 1979 * then configure the vif. Since the vif is not 1980 * associated, we would remove the station here and 1981 * this would fail the recovery. 1982 */ 1983 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1984 &mvm->status)) { 1985 /* 1986 * Remove AP station now that 1987 * the MAC is unassoc 1988 */ 1989 ret = iwl_mvm_rm_sta_id(mvm, vif, 1990 mvmvif->ap_sta_id); 1991 if (ret) 1992 IWL_ERR(mvm, 1993 "failed to remove AP station\n"); 1994 1995 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 1996 mvm->d0i3_ap_sta_id = 1997 IWL_MVM_INVALID_STA; 1998 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1999 } 2000 2001 /* remove quota for this interface */ 2002 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2003 if (ret) 2004 IWL_ERR(mvm, "failed to update quotas\n"); 2005 2006 if (vif->p2p) 2007 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 2008 2009 /* this will take the cleared BSSID from bss_conf */ 2010 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2011 if (ret) 2012 IWL_ERR(mvm, 2013 "failed to update MAC %pM (clear after unassoc)\n", 2014 vif->addr); 2015 } 2016 2017 /* 2018 * The firmware tracks the MU-MIMO group on its own. 2019 * However, on HW restart we should restore this data. 2020 */ 2021 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2022 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2023 ret = iwl_mvm_update_mu_groups(mvm, vif); 2024 if (ret) 2025 IWL_ERR(mvm, 2026 "failed to update VHT MU_MIMO groups\n"); 2027 } 2028 2029 iwl_mvm_recalc_multicast(mvm); 2030 iwl_mvm_configure_bcast_filter(mvm); 2031 2032 /* reset rssi values */ 2033 mvmvif->bf_data.ave_beacon_signal = 0; 2034 2035 iwl_mvm_bt_coex_vif_change(mvm); 2036 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2037 IEEE80211_SMPS_AUTOMATIC); 2038 if (fw_has_capa(&mvm->fw->ucode_capa, 2039 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2040 iwl_mvm_config_scan(mvm); 2041 } 2042 2043 if (changes & BSS_CHANGED_BEACON_INFO) { 2044 /* 2045 * We received a beacon from the associated AP so 2046 * remove the session protection. 2047 */ 2048 iwl_mvm_stop_session_protection(mvm, vif); 2049 2050 iwl_mvm_sf_update(mvm, vif, false); 2051 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2052 } 2053 2054 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2055 /* 2056 * Send power command on every beacon change, 2057 * because we may have not enabled beacon abort yet. 2058 */ 2059 BSS_CHANGED_BEACON_INFO)) { 2060 ret = iwl_mvm_power_update_mac(mvm); 2061 if (ret) 2062 IWL_ERR(mvm, "failed to update power mode\n"); 2063 } 2064 2065 if (changes & BSS_CHANGED_TXPOWER) { 2066 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2067 bss_conf->txpower); 2068 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2069 } 2070 2071 if (changes & BSS_CHANGED_CQM) { 2072 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2073 /* reset cqm events tracking */ 2074 mvmvif->bf_data.last_cqm_event = 0; 2075 if (mvmvif->bf_data.bf_enabled) { 2076 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2077 if (ret) 2078 IWL_ERR(mvm, 2079 "failed to update CQM thresholds\n"); 2080 } 2081 } 2082 2083 if (changes & BSS_CHANGED_ARP_FILTER) { 2084 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2085 iwl_mvm_configure_bcast_filter(mvm); 2086 } 2087 } 2088 2089 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2090 struct ieee80211_vif *vif) 2091 { 2092 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2093 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2094 int ret; 2095 2096 /* 2097 * iwl_mvm_mac_ctxt_add() might read directly from the device 2098 * (the system time), so make sure it is available. 2099 */ 2100 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2101 if (ret) 2102 return ret; 2103 2104 mutex_lock(&mvm->mutex); 2105 2106 /* Send the beacon template */ 2107 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2108 if (ret) 2109 goto out_unlock; 2110 2111 /* 2112 * Re-calculate the tsf id, as the master-slave relations depend on the 2113 * beacon interval, which was not known when the AP interface was added. 2114 */ 2115 if (vif->type == NL80211_IFTYPE_AP) 2116 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2117 2118 mvmvif->ap_assoc_sta_count = 0; 2119 2120 /* Add the mac context */ 2121 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2122 if (ret) 2123 goto out_unlock; 2124 2125 /* Perform the binding */ 2126 ret = iwl_mvm_binding_add_vif(mvm, vif); 2127 if (ret) 2128 goto out_remove; 2129 2130 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2131 if (ret) 2132 goto out_unbind; 2133 2134 /* Send the bcast station. At this stage the TBTT and DTIM time events 2135 * are added and applied to the scheduler */ 2136 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2137 if (ret) 2138 goto out_rm_mcast; 2139 2140 /* must be set before quota calculations */ 2141 mvmvif->ap_ibss_active = true; 2142 2143 /* power updated needs to be done before quotas */ 2144 iwl_mvm_power_update_mac(mvm); 2145 2146 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2147 if (ret) 2148 goto out_quota_failed; 2149 2150 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2151 if (vif->p2p && mvm->p2p_device_vif) 2152 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2153 2154 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2155 2156 iwl_mvm_bt_coex_vif_change(mvm); 2157 2158 /* we don't support TDLS during DCM */ 2159 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2160 iwl_mvm_teardown_tdls_peers(mvm); 2161 2162 goto out_unlock; 2163 2164 out_quota_failed: 2165 iwl_mvm_power_update_mac(mvm); 2166 mvmvif->ap_ibss_active = false; 2167 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2168 out_rm_mcast: 2169 iwl_mvm_rm_mcast_sta(mvm, vif); 2170 out_unbind: 2171 iwl_mvm_binding_remove_vif(mvm, vif); 2172 out_remove: 2173 iwl_mvm_mac_ctxt_remove(mvm, vif); 2174 out_unlock: 2175 mutex_unlock(&mvm->mutex); 2176 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2177 return ret; 2178 } 2179 2180 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2181 struct ieee80211_vif *vif) 2182 { 2183 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2184 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2185 2186 iwl_mvm_prepare_mac_removal(mvm, vif); 2187 2188 mutex_lock(&mvm->mutex); 2189 2190 /* Handle AP stop while in CSA */ 2191 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2192 iwl_mvm_remove_time_event(mvm, mvmvif, 2193 &mvmvif->time_event_data); 2194 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2195 mvmvif->csa_countdown = false; 2196 } 2197 2198 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2199 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2200 mvm->csa_tx_block_bcn_timeout = 0; 2201 } 2202 2203 mvmvif->ap_ibss_active = false; 2204 mvm->ap_last_beacon_gp2 = 0; 2205 2206 iwl_mvm_bt_coex_vif_change(mvm); 2207 2208 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2209 2210 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2211 if (vif->p2p && mvm->p2p_device_vif) 2212 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2213 2214 iwl_mvm_update_quotas(mvm, false, NULL); 2215 2216 /* 2217 * This is not very nice, but the simplest: 2218 * For older FWs removing the mcast sta before the bcast station may 2219 * cause assert 0x2b00. 2220 * This is fixed in later FW (which will stop beaconing when removing 2221 * bcast station). 2222 * So make the order of removal depend on the TLV 2223 */ 2224 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2225 iwl_mvm_rm_mcast_sta(mvm, vif); 2226 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2227 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2228 iwl_mvm_rm_mcast_sta(mvm, vif); 2229 iwl_mvm_binding_remove_vif(mvm, vif); 2230 2231 iwl_mvm_power_update_mac(mvm); 2232 2233 iwl_mvm_mac_ctxt_remove(mvm, vif); 2234 2235 mutex_unlock(&mvm->mutex); 2236 } 2237 2238 static void 2239 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2240 struct ieee80211_vif *vif, 2241 struct ieee80211_bss_conf *bss_conf, 2242 u32 changes) 2243 { 2244 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2245 2246 /* Changes will be applied when the AP/IBSS is started */ 2247 if (!mvmvif->ap_ibss_active) 2248 return; 2249 2250 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2251 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2252 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2253 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2254 2255 /* Need to send a new beacon template to the FW */ 2256 if (changes & BSS_CHANGED_BEACON && 2257 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2258 IWL_WARN(mvm, "Failed updating beacon data\n"); 2259 2260 if (changes & BSS_CHANGED_TXPOWER) { 2261 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2262 bss_conf->txpower); 2263 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2264 } 2265 } 2266 2267 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2268 struct ieee80211_vif *vif, 2269 struct ieee80211_bss_conf *bss_conf, 2270 u32 changes) 2271 { 2272 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2273 2274 /* 2275 * iwl_mvm_bss_info_changed_station() might call 2276 * iwl_mvm_protect_session(), which reads directly from 2277 * the device (the system time), so make sure it is available. 2278 */ 2279 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2280 return; 2281 2282 mutex_lock(&mvm->mutex); 2283 2284 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2285 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2286 2287 switch (vif->type) { 2288 case NL80211_IFTYPE_STATION: 2289 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2290 break; 2291 case NL80211_IFTYPE_AP: 2292 case NL80211_IFTYPE_ADHOC: 2293 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2294 break; 2295 case NL80211_IFTYPE_MONITOR: 2296 if (changes & BSS_CHANGED_MU_GROUPS) 2297 iwl_mvm_update_mu_groups(mvm, vif); 2298 break; 2299 default: 2300 /* shouldn't happen */ 2301 WARN_ON_ONCE(1); 2302 } 2303 2304 mutex_unlock(&mvm->mutex); 2305 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2306 } 2307 2308 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2309 struct ieee80211_vif *vif, 2310 struct ieee80211_scan_request *hw_req) 2311 { 2312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2313 int ret; 2314 2315 if (hw_req->req.n_channels == 0 || 2316 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2317 return -EINVAL; 2318 2319 mutex_lock(&mvm->mutex); 2320 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2321 mutex_unlock(&mvm->mutex); 2322 2323 return ret; 2324 } 2325 2326 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2327 struct ieee80211_vif *vif) 2328 { 2329 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2330 2331 mutex_lock(&mvm->mutex); 2332 2333 /* Due to a race condition, it's possible that mac80211 asks 2334 * us to stop a hw_scan when it's already stopped. This can 2335 * happen, for instance, if we stopped the scan ourselves, 2336 * called ieee80211_scan_completed() and the userspace called 2337 * cancel scan scan before ieee80211_scan_work() could run. 2338 * To handle that, simply return if the scan is not running. 2339 */ 2340 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2341 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2342 2343 mutex_unlock(&mvm->mutex); 2344 } 2345 2346 static void 2347 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2348 struct ieee80211_sta *sta, u16 tids, 2349 int num_frames, 2350 enum ieee80211_frame_release_type reason, 2351 bool more_data) 2352 { 2353 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2354 2355 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2356 2357 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2358 tids, more_data, false); 2359 } 2360 2361 static void 2362 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2363 struct ieee80211_sta *sta, u16 tids, 2364 int num_frames, 2365 enum ieee80211_frame_release_type reason, 2366 bool more_data) 2367 { 2368 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2369 2370 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2371 2372 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2373 tids, more_data, true); 2374 } 2375 2376 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2377 enum sta_notify_cmd cmd, 2378 struct ieee80211_sta *sta) 2379 { 2380 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2381 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2382 unsigned long txqs = 0, tids = 0; 2383 int tid; 2384 2385 /* 2386 * If we have TVQM then we get too high queue numbers - luckily 2387 * we really shouldn't get here with that because such hardware 2388 * should have firmware supporting buffer station offload. 2389 */ 2390 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2391 return; 2392 2393 spin_lock_bh(&mvmsta->lock); 2394 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2395 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2396 2397 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2398 continue; 2399 2400 __set_bit(tid_data->txq_id, &txqs); 2401 2402 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2403 continue; 2404 2405 __set_bit(tid, &tids); 2406 } 2407 2408 switch (cmd) { 2409 case STA_NOTIFY_SLEEP: 2410 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2411 ieee80211_sta_set_buffered(sta, tid, true); 2412 2413 if (txqs) 2414 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2415 /* 2416 * The fw updates the STA to be asleep. Tx packets on the Tx 2417 * queues to this station will not be transmitted. The fw will 2418 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2419 */ 2420 break; 2421 case STA_NOTIFY_AWAKE: 2422 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2423 break; 2424 2425 if (txqs) 2426 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2427 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2428 break; 2429 default: 2430 break; 2431 } 2432 spin_unlock_bh(&mvmsta->lock); 2433 } 2434 2435 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2436 struct ieee80211_vif *vif, 2437 enum sta_notify_cmd cmd, 2438 struct ieee80211_sta *sta) 2439 { 2440 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2441 } 2442 2443 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2444 { 2445 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2446 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2447 struct ieee80211_sta *sta; 2448 struct iwl_mvm_sta *mvmsta; 2449 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2450 2451 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2452 return; 2453 2454 rcu_read_lock(); 2455 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2456 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2457 rcu_read_unlock(); 2458 return; 2459 } 2460 2461 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2462 2463 if (!mvmsta->vif || 2464 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2465 rcu_read_unlock(); 2466 return; 2467 } 2468 2469 if (mvmsta->sleeping != sleeping) { 2470 mvmsta->sleeping = sleeping; 2471 __iwl_mvm_mac_sta_notify(mvm->hw, 2472 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2473 sta); 2474 ieee80211_sta_ps_transition(sta, sleeping); 2475 } 2476 2477 if (sleeping) { 2478 switch (notif->type) { 2479 case IWL_MVM_PM_EVENT_AWAKE: 2480 case IWL_MVM_PM_EVENT_ASLEEP: 2481 break; 2482 case IWL_MVM_PM_EVENT_UAPSD: 2483 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2484 break; 2485 case IWL_MVM_PM_EVENT_PS_POLL: 2486 ieee80211_sta_pspoll(sta); 2487 break; 2488 default: 2489 break; 2490 } 2491 } 2492 2493 rcu_read_unlock(); 2494 } 2495 2496 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2497 struct ieee80211_vif *vif, 2498 struct ieee80211_sta *sta) 2499 { 2500 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2501 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2502 2503 /* 2504 * This is called before mac80211 does RCU synchronisation, 2505 * so here we already invalidate our internal RCU-protected 2506 * station pointer. The rest of the code will thus no longer 2507 * be able to find the station this way, and we don't rely 2508 * on further RCU synchronisation after the sta_state() 2509 * callback deleted the station. 2510 */ 2511 mutex_lock(&mvm->mutex); 2512 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2513 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2514 ERR_PTR(-ENOENT)); 2515 2516 mutex_unlock(&mvm->mutex); 2517 } 2518 2519 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2520 const u8 *bssid) 2521 { 2522 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2523 return; 2524 2525 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2526 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2527 return; 2528 } 2529 2530 if (!vif->p2p && 2531 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2532 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2533 return; 2534 } 2535 2536 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2537 } 2538 2539 static void 2540 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2541 struct ieee80211_vif *vif, u8 *peer_addr, 2542 enum nl80211_tdls_operation action) 2543 { 2544 struct iwl_fw_dbg_trigger_tlv *trig; 2545 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2546 2547 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) 2548 return; 2549 2550 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); 2551 tdls_trig = (void *)trig->data; 2552 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 2553 ieee80211_vif_to_wdev(vif), trig)) 2554 return; 2555 2556 if (!(tdls_trig->action_bitmap & BIT(action))) 2557 return; 2558 2559 if (tdls_trig->peer_mode && 2560 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2561 return; 2562 2563 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2564 "TDLS event occurred, peer %pM, action %d", 2565 peer_addr, action); 2566 } 2567 2568 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2569 struct iwl_mvm_sta *mvm_sta) 2570 { 2571 struct iwl_mvm_tid_data *tid_data; 2572 struct sk_buff *skb; 2573 int i; 2574 2575 spin_lock_bh(&mvm_sta->lock); 2576 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2577 tid_data = &mvm_sta->tid_data[i]; 2578 2579 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) { 2580 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 2581 2582 /* 2583 * The first deferred frame should've stopped the MAC 2584 * queues, so we should never get a second deferred 2585 * frame for the RA/TID. 2586 */ 2587 iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue)); 2588 ieee80211_free_txskb(mvm->hw, skb); 2589 } 2590 } 2591 spin_unlock_bh(&mvm_sta->lock); 2592 } 2593 2594 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2595 struct ieee80211_vif *vif, 2596 struct ieee80211_sta *sta, 2597 enum ieee80211_sta_state old_state, 2598 enum ieee80211_sta_state new_state) 2599 { 2600 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2601 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2602 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2603 int ret; 2604 2605 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2606 sta->addr, old_state, new_state); 2607 2608 /* this would be a mac80211 bug ... but don't crash */ 2609 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2610 return -EINVAL; 2611 2612 /* 2613 * If we are in a STA removal flow and in DQA mode: 2614 * 2615 * This is after the sync_rcu part, so the queues have already been 2616 * flushed. No more TXs on their way in mac80211's path, and no more in 2617 * the queues. 2618 * Also, we won't be getting any new TX frames for this station. 2619 * What we might have are deferred TX frames that need to be taken care 2620 * of. 2621 * 2622 * Drop any still-queued deferred-frame before removing the STA, and 2623 * make sure the worker is no longer handling frames for this STA. 2624 */ 2625 if (old_state == IEEE80211_STA_NONE && 2626 new_state == IEEE80211_STA_NOTEXIST) { 2627 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2628 flush_work(&mvm->add_stream_wk); 2629 2630 /* 2631 * No need to make sure deferred TX indication is off since the 2632 * worker will already remove it if it was on 2633 */ 2634 } 2635 2636 mutex_lock(&mvm->mutex); 2637 /* track whether or not the station is associated */ 2638 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC; 2639 2640 if (old_state == IEEE80211_STA_NOTEXIST && 2641 new_state == IEEE80211_STA_NONE) { 2642 /* 2643 * Firmware bug - it'll crash if the beacon interval is less 2644 * than 16. We can't avoid connecting at all, so refuse the 2645 * station state change, this will cause mac80211 to abandon 2646 * attempts to connect to this AP, and eventually wpa_s will 2647 * blacklist the AP... 2648 */ 2649 if (vif->type == NL80211_IFTYPE_STATION && 2650 vif->bss_conf.beacon_int < 16) { 2651 IWL_ERR(mvm, 2652 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2653 sta->addr, vif->bss_conf.beacon_int); 2654 ret = -EINVAL; 2655 goto out_unlock; 2656 } 2657 2658 if (sta->tdls && 2659 (vif->p2p || 2660 iwl_mvm_tdls_sta_count(mvm, NULL) == 2661 IWL_MVM_TDLS_STA_COUNT || 2662 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2663 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2664 ret = -EBUSY; 2665 goto out_unlock; 2666 } 2667 2668 ret = iwl_mvm_add_sta(mvm, vif, sta); 2669 if (sta->tdls && ret == 0) { 2670 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2671 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2672 NL80211_TDLS_SETUP); 2673 } 2674 } else if (old_state == IEEE80211_STA_NONE && 2675 new_state == IEEE80211_STA_AUTH) { 2676 /* 2677 * EBS may be disabled due to previous failures reported by FW. 2678 * Reset EBS status here assuming environment has been changed. 2679 */ 2680 mvm->last_ebs_successful = true; 2681 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2682 ret = 0; 2683 } else if (old_state == IEEE80211_STA_AUTH && 2684 new_state == IEEE80211_STA_ASSOC) { 2685 if (vif->type == NL80211_IFTYPE_AP) { 2686 mvmvif->ap_assoc_sta_count++; 2687 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2688 } 2689 2690 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2691 true); 2692 ret = iwl_mvm_update_sta(mvm, vif, sta); 2693 } else if (old_state == IEEE80211_STA_ASSOC && 2694 new_state == IEEE80211_STA_AUTHORIZED) { 2695 2696 /* we don't support TDLS during DCM */ 2697 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2698 iwl_mvm_teardown_tdls_peers(mvm); 2699 2700 if (sta->tdls) 2701 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2702 NL80211_TDLS_ENABLE_LINK); 2703 2704 /* enable beacon filtering */ 2705 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2706 ret = 0; 2707 } else if (old_state == IEEE80211_STA_AUTHORIZED && 2708 new_state == IEEE80211_STA_ASSOC) { 2709 /* disable beacon filtering */ 2710 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 2711 ret = 0; 2712 } else if (old_state == IEEE80211_STA_ASSOC && 2713 new_state == IEEE80211_STA_AUTH) { 2714 if (vif->type == NL80211_IFTYPE_AP) { 2715 mvmvif->ap_assoc_sta_count--; 2716 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2717 } 2718 ret = 0; 2719 } else if (old_state == IEEE80211_STA_AUTH && 2720 new_state == IEEE80211_STA_NONE) { 2721 ret = 0; 2722 } else if (old_state == IEEE80211_STA_NONE && 2723 new_state == IEEE80211_STA_NOTEXIST) { 2724 ret = iwl_mvm_rm_sta(mvm, vif, sta); 2725 if (sta->tdls) { 2726 iwl_mvm_recalc_tdls_state(mvm, vif, false); 2727 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2728 NL80211_TDLS_DISABLE_LINK); 2729 } 2730 } else { 2731 ret = -EIO; 2732 } 2733 out_unlock: 2734 mutex_unlock(&mvm->mutex); 2735 2736 if (sta->tdls && ret == 0) { 2737 if (old_state == IEEE80211_STA_NOTEXIST && 2738 new_state == IEEE80211_STA_NONE) 2739 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2740 else if (old_state == IEEE80211_STA_NONE && 2741 new_state == IEEE80211_STA_NOTEXIST) 2742 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2743 } 2744 2745 return ret; 2746 } 2747 2748 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 2749 { 2750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2751 2752 mvm->rts_threshold = value; 2753 2754 return 0; 2755 } 2756 2757 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 2758 struct ieee80211_vif *vif, 2759 struct ieee80211_sta *sta, u32 changed) 2760 { 2761 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2762 2763 if (vif->type == NL80211_IFTYPE_STATION && 2764 changed & IEEE80211_RC_NSS_CHANGED) 2765 iwl_mvm_sf_update(mvm, vif, false); 2766 } 2767 2768 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 2769 struct ieee80211_vif *vif, u16 ac, 2770 const struct ieee80211_tx_queue_params *params) 2771 { 2772 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2773 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2774 2775 mvmvif->queue_params[ac] = *params; 2776 2777 /* 2778 * No need to update right away, we'll get BSS_CHANGED_QOS 2779 * The exception is P2P_DEVICE interface which needs immediate update. 2780 */ 2781 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2782 int ret; 2783 2784 mutex_lock(&mvm->mutex); 2785 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2786 mutex_unlock(&mvm->mutex); 2787 return ret; 2788 } 2789 return 0; 2790 } 2791 2792 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 2793 struct ieee80211_vif *vif) 2794 { 2795 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2796 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2797 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2798 2799 if (WARN_ON_ONCE(vif->bss_conf.assoc)) 2800 return; 2801 2802 /* 2803 * iwl_mvm_protect_session() reads directly from the device 2804 * (the system time), so make sure it is available. 2805 */ 2806 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 2807 return; 2808 2809 mutex_lock(&mvm->mutex); 2810 /* Try really hard to protect the session and hear a beacon */ 2811 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 2812 mutex_unlock(&mvm->mutex); 2813 2814 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 2815 } 2816 2817 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 2818 struct ieee80211_vif *vif, 2819 struct cfg80211_sched_scan_request *req, 2820 struct ieee80211_scan_ies *ies) 2821 { 2822 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2823 2824 int ret; 2825 2826 mutex_lock(&mvm->mutex); 2827 2828 if (!vif->bss_conf.idle) { 2829 ret = -EBUSY; 2830 goto out; 2831 } 2832 2833 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 2834 2835 out: 2836 mutex_unlock(&mvm->mutex); 2837 return ret; 2838 } 2839 2840 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 2841 struct ieee80211_vif *vif) 2842 { 2843 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2844 int ret; 2845 2846 mutex_lock(&mvm->mutex); 2847 2848 /* Due to a race condition, it's possible that mac80211 asks 2849 * us to stop a sched_scan when it's already stopped. This 2850 * can happen, for instance, if we stopped the scan ourselves, 2851 * called ieee80211_sched_scan_stopped() and the userspace called 2852 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 2853 * could run. To handle this, simply return if the scan is 2854 * not running. 2855 */ 2856 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 2857 mutex_unlock(&mvm->mutex); 2858 return 0; 2859 } 2860 2861 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 2862 mutex_unlock(&mvm->mutex); 2863 iwl_mvm_wait_for_async_handlers(mvm); 2864 2865 return ret; 2866 } 2867 2868 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 2869 enum set_key_cmd cmd, 2870 struct ieee80211_vif *vif, 2871 struct ieee80211_sta *sta, 2872 struct ieee80211_key_conf *key) 2873 { 2874 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2875 struct iwl_mvm_sta *mvmsta; 2876 struct iwl_mvm_key_pn *ptk_pn; 2877 int keyidx = key->keyidx; 2878 int ret; 2879 u8 key_offset; 2880 2881 if (iwlwifi_mod_params.swcrypto) { 2882 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 2883 return -EOPNOTSUPP; 2884 } 2885 2886 switch (key->cipher) { 2887 case WLAN_CIPHER_SUITE_TKIP: 2888 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 2889 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2890 break; 2891 case WLAN_CIPHER_SUITE_CCMP: 2892 case WLAN_CIPHER_SUITE_GCMP: 2893 case WLAN_CIPHER_SUITE_GCMP_256: 2894 if (!iwl_mvm_has_new_tx_api(mvm)) 2895 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2896 break; 2897 case WLAN_CIPHER_SUITE_AES_CMAC: 2898 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2899 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2900 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 2901 break; 2902 case WLAN_CIPHER_SUITE_WEP40: 2903 case WLAN_CIPHER_SUITE_WEP104: 2904 /* For non-client mode, only use WEP keys for TX as we probably 2905 * don't have a station yet anyway and would then have to keep 2906 * track of the keys, linking them to each of the clients/peers 2907 * as they appear. For now, don't do that, for performance WEP 2908 * offload doesn't really matter much, but we need it for some 2909 * other offload features in client mode. 2910 */ 2911 if (vif->type != NL80211_IFTYPE_STATION) 2912 return 0; 2913 break; 2914 default: 2915 /* currently FW supports only one optional cipher scheme */ 2916 if (hw->n_cipher_schemes && 2917 hw->cipher_schemes->cipher == key->cipher) 2918 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2919 else 2920 return -EOPNOTSUPP; 2921 } 2922 2923 mutex_lock(&mvm->mutex); 2924 2925 switch (cmd) { 2926 case SET_KEY: 2927 if ((vif->type == NL80211_IFTYPE_ADHOC || 2928 vif->type == NL80211_IFTYPE_AP) && !sta) { 2929 /* 2930 * GTK on AP interface is a TX-only key, return 0; 2931 * on IBSS they're per-station and because we're lazy 2932 * we don't support them for RX, so do the same. 2933 * CMAC/GMAC in AP/IBSS modes must be done in software. 2934 */ 2935 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 2936 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 2937 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 2938 ret = -EOPNOTSUPP; 2939 else 2940 ret = 0; 2941 2942 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 2943 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 2944 !iwl_mvm_has_new_tx_api(mvm)) { 2945 key->hw_key_idx = STA_KEY_IDX_INVALID; 2946 break; 2947 } 2948 } 2949 2950 /* During FW restart, in order to restore the state as it was, 2951 * don't try to reprogram keys we previously failed for. 2952 */ 2953 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2954 key->hw_key_idx == STA_KEY_IDX_INVALID) { 2955 IWL_DEBUG_MAC80211(mvm, 2956 "skip invalid idx key programming during restart\n"); 2957 ret = 0; 2958 break; 2959 } 2960 2961 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2962 sta && iwl_mvm_has_new_rx_api(mvm) && 2963 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2964 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2965 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2966 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2967 struct ieee80211_key_seq seq; 2968 int tid, q; 2969 2970 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2971 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 2972 ptk_pn = kzalloc(sizeof(*ptk_pn) + 2973 mvm->trans->num_rx_queues * 2974 sizeof(ptk_pn->q[0]), 2975 GFP_KERNEL); 2976 if (!ptk_pn) { 2977 ret = -ENOMEM; 2978 break; 2979 } 2980 2981 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2982 ieee80211_get_key_rx_seq(key, tid, &seq); 2983 for (q = 0; q < mvm->trans->num_rx_queues; q++) 2984 memcpy(ptk_pn->q[q].pn[tid], 2985 seq.ccmp.pn, 2986 IEEE80211_CCMP_PN_LEN); 2987 } 2988 2989 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 2990 } 2991 2992 /* in HW restart reuse the index, otherwise request a new one */ 2993 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2994 key_offset = key->hw_key_idx; 2995 else 2996 key_offset = STA_KEY_IDX_INVALID; 2997 2998 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 2999 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3000 if (ret) { 3001 IWL_WARN(mvm, "set key failed\n"); 3002 /* 3003 * can't add key for RX, but we don't need it 3004 * in the device for TX so still return 0 3005 */ 3006 key->hw_key_idx = STA_KEY_IDX_INVALID; 3007 ret = 0; 3008 } 3009 3010 break; 3011 case DISABLE_KEY: 3012 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3013 ret = 0; 3014 break; 3015 } 3016 3017 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3018 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3019 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3020 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3021 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3022 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3023 ptk_pn = rcu_dereference_protected( 3024 mvmsta->ptk_pn[keyidx], 3025 lockdep_is_held(&mvm->mutex)); 3026 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3027 if (ptk_pn) 3028 kfree_rcu(ptk_pn, rcu_head); 3029 } 3030 3031 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3032 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3033 break; 3034 default: 3035 ret = -EINVAL; 3036 } 3037 3038 mutex_unlock(&mvm->mutex); 3039 return ret; 3040 } 3041 3042 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3043 struct ieee80211_vif *vif, 3044 struct ieee80211_key_conf *keyconf, 3045 struct ieee80211_sta *sta, 3046 u32 iv32, u16 *phase1key) 3047 { 3048 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3049 3050 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3051 return; 3052 3053 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3054 } 3055 3056 3057 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3058 struct iwl_rx_packet *pkt, void *data) 3059 { 3060 struct iwl_mvm *mvm = 3061 container_of(notif_wait, struct iwl_mvm, notif_wait); 3062 struct iwl_hs20_roc_res *resp; 3063 int resp_len = iwl_rx_packet_payload_len(pkt); 3064 struct iwl_mvm_time_event_data *te_data = data; 3065 3066 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3067 return true; 3068 3069 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3070 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3071 return true; 3072 } 3073 3074 resp = (void *)pkt->data; 3075 3076 IWL_DEBUG_TE(mvm, 3077 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 3078 resp->status, resp->event_unique_id); 3079 3080 te_data->uid = le32_to_cpu(resp->event_unique_id); 3081 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3082 te_data->uid); 3083 3084 spin_lock_bh(&mvm->time_event_lock); 3085 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3086 spin_unlock_bh(&mvm->time_event_lock); 3087 3088 return true; 3089 } 3090 3091 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3092 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3093 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3094 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3095 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3096 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3097 struct ieee80211_channel *channel, 3098 struct ieee80211_vif *vif, 3099 int duration) 3100 { 3101 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3102 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3103 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3104 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3105 struct iwl_notification_wait wait_time_event; 3106 u32 dtim_interval = vif->bss_conf.dtim_period * 3107 vif->bss_conf.beacon_int; 3108 u32 req_dur, delay; 3109 struct iwl_hs20_roc_req aux_roc_req = { 3110 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3111 .id_and_color = 3112 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3113 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3114 /* Set the channel info data */ 3115 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3116 PHY_BAND_24 : PHY_BAND_5, 3117 .channel_info.channel = channel->hw_value, 3118 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3119 /* Set the time and duration */ 3120 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3121 }; 3122 3123 delay = AUX_ROC_MIN_DELAY; 3124 req_dur = MSEC_TO_TU(duration); 3125 3126 /* 3127 * If we are associated we want the delay time to be at least one 3128 * dtim interval so that the FW can wait until after the DTIM and 3129 * then start the time event, this will potentially allow us to 3130 * remain off-channel for the max duration. 3131 * Since we want to use almost a whole dtim interval we would also 3132 * like the delay to be for 2-3 dtim intervals, in case there are 3133 * other time events with higher priority. 3134 */ 3135 if (vif->bss_conf.assoc) { 3136 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3137 /* We cannot remain off-channel longer than the DTIM interval */ 3138 if (dtim_interval <= req_dur) { 3139 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3140 if (req_dur <= AUX_ROC_MIN_DURATION) 3141 req_dur = dtim_interval - 3142 AUX_ROC_MIN_SAFETY_BUFFER; 3143 } 3144 } 3145 3146 aux_roc_req.duration = cpu_to_le32(req_dur); 3147 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3148 3149 IWL_DEBUG_TE(mvm, 3150 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3151 channel->hw_value, req_dur, duration, delay, 3152 dtim_interval); 3153 /* Set the node address */ 3154 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3155 3156 lockdep_assert_held(&mvm->mutex); 3157 3158 spin_lock_bh(&mvm->time_event_lock); 3159 3160 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3161 spin_unlock_bh(&mvm->time_event_lock); 3162 return -EIO; 3163 } 3164 3165 te_data->vif = vif; 3166 te_data->duration = duration; 3167 te_data->id = HOT_SPOT_CMD; 3168 3169 spin_unlock_bh(&mvm->time_event_lock); 3170 3171 /* 3172 * Use a notification wait, which really just processes the 3173 * command response and doesn't wait for anything, in order 3174 * to be able to process the response and get the UID inside 3175 * the RX path. Using CMD_WANT_SKB doesn't work because it 3176 * stores the buffer and then wakes up this thread, by which 3177 * time another notification (that the time event started) 3178 * might already be processed unsuccessfully. 3179 */ 3180 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3181 time_event_response, 3182 ARRAY_SIZE(time_event_response), 3183 iwl_mvm_rx_aux_roc, te_data); 3184 3185 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3186 &aux_roc_req); 3187 3188 if (res) { 3189 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3190 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3191 goto out_clear_te; 3192 } 3193 3194 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3195 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3196 /* should never fail */ 3197 WARN_ON_ONCE(res); 3198 3199 if (res) { 3200 out_clear_te: 3201 spin_lock_bh(&mvm->time_event_lock); 3202 iwl_mvm_te_clear_data(mvm, te_data); 3203 spin_unlock_bh(&mvm->time_event_lock); 3204 } 3205 3206 return res; 3207 } 3208 3209 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3210 struct ieee80211_vif *vif, 3211 struct ieee80211_channel *channel, 3212 int duration, 3213 enum ieee80211_roc_type type) 3214 { 3215 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3216 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3217 struct cfg80211_chan_def chandef; 3218 struct iwl_mvm_phy_ctxt *phy_ctxt; 3219 int ret, i; 3220 3221 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3222 duration, type); 3223 3224 flush_work(&mvm->roc_done_wk); 3225 3226 mutex_lock(&mvm->mutex); 3227 3228 switch (vif->type) { 3229 case NL80211_IFTYPE_STATION: 3230 if (fw_has_capa(&mvm->fw->ucode_capa, 3231 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3232 /* Use aux roc framework (HS20) */ 3233 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3234 vif, duration); 3235 goto out_unlock; 3236 } 3237 IWL_ERR(mvm, "hotspot not supported\n"); 3238 ret = -EINVAL; 3239 goto out_unlock; 3240 case NL80211_IFTYPE_P2P_DEVICE: 3241 /* handle below */ 3242 break; 3243 default: 3244 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3245 ret = -EINVAL; 3246 goto out_unlock; 3247 } 3248 3249 for (i = 0; i < NUM_PHY_CTX; i++) { 3250 phy_ctxt = &mvm->phy_ctxts[i]; 3251 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3252 continue; 3253 3254 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3255 /* 3256 * Unbind the P2P_DEVICE from the current PHY context, 3257 * and if the PHY context is not used remove it. 3258 */ 3259 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3260 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3261 goto out_unlock; 3262 3263 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3264 3265 /* Bind the P2P_DEVICE to the current PHY Context */ 3266 mvmvif->phy_ctxt = phy_ctxt; 3267 3268 ret = iwl_mvm_binding_add_vif(mvm, vif); 3269 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3270 goto out_unlock; 3271 3272 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3273 goto schedule_time_event; 3274 } 3275 } 3276 3277 /* Need to update the PHY context only if the ROC channel changed */ 3278 if (channel == mvmvif->phy_ctxt->channel) 3279 goto schedule_time_event; 3280 3281 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3282 3283 /* 3284 * Change the PHY context configuration as it is currently referenced 3285 * only by the P2P Device MAC 3286 */ 3287 if (mvmvif->phy_ctxt->ref == 1) { 3288 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3289 &chandef, 1, 1); 3290 if (ret) 3291 goto out_unlock; 3292 } else { 3293 /* 3294 * The PHY context is shared with other MACs. Need to remove the 3295 * P2P Device from the binding, allocate an new PHY context and 3296 * create a new binding 3297 */ 3298 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3299 if (!phy_ctxt) { 3300 ret = -ENOSPC; 3301 goto out_unlock; 3302 } 3303 3304 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3305 1, 1); 3306 if (ret) { 3307 IWL_ERR(mvm, "Failed to change PHY context\n"); 3308 goto out_unlock; 3309 } 3310 3311 /* Unbind the P2P_DEVICE from the current PHY context */ 3312 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3313 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3314 goto out_unlock; 3315 3316 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3317 3318 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3319 mvmvif->phy_ctxt = phy_ctxt; 3320 3321 ret = iwl_mvm_binding_add_vif(mvm, vif); 3322 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3323 goto out_unlock; 3324 3325 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3326 } 3327 3328 schedule_time_event: 3329 /* Schedule the time events */ 3330 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3331 3332 out_unlock: 3333 mutex_unlock(&mvm->mutex); 3334 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3335 return ret; 3336 } 3337 3338 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3339 { 3340 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3341 3342 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3343 3344 mutex_lock(&mvm->mutex); 3345 iwl_mvm_stop_roc(mvm); 3346 mutex_unlock(&mvm->mutex); 3347 3348 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3349 return 0; 3350 } 3351 3352 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3353 struct ieee80211_chanctx_conf *ctx) 3354 { 3355 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3356 struct iwl_mvm_phy_ctxt *phy_ctxt; 3357 int ret; 3358 3359 lockdep_assert_held(&mvm->mutex); 3360 3361 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3362 3363 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3364 if (!phy_ctxt) { 3365 ret = -ENOSPC; 3366 goto out; 3367 } 3368 3369 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3370 ctx->rx_chains_static, 3371 ctx->rx_chains_dynamic); 3372 if (ret) { 3373 IWL_ERR(mvm, "Failed to add PHY context\n"); 3374 goto out; 3375 } 3376 3377 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3378 *phy_ctxt_id = phy_ctxt->id; 3379 out: 3380 return ret; 3381 } 3382 3383 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3384 struct ieee80211_chanctx_conf *ctx) 3385 { 3386 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3387 int ret; 3388 3389 mutex_lock(&mvm->mutex); 3390 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3391 mutex_unlock(&mvm->mutex); 3392 3393 return ret; 3394 } 3395 3396 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3397 struct ieee80211_chanctx_conf *ctx) 3398 { 3399 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3400 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3401 3402 lockdep_assert_held(&mvm->mutex); 3403 3404 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3405 } 3406 3407 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3408 struct ieee80211_chanctx_conf *ctx) 3409 { 3410 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3411 3412 mutex_lock(&mvm->mutex); 3413 __iwl_mvm_remove_chanctx(mvm, ctx); 3414 mutex_unlock(&mvm->mutex); 3415 } 3416 3417 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3418 struct ieee80211_chanctx_conf *ctx, 3419 u32 changed) 3420 { 3421 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3422 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3423 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3424 3425 if (WARN_ONCE((phy_ctxt->ref > 1) && 3426 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3427 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3428 IEEE80211_CHANCTX_CHANGE_RADAR | 3429 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3430 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3431 phy_ctxt->ref, changed)) 3432 return; 3433 3434 mutex_lock(&mvm->mutex); 3435 iwl_mvm_bt_coex_vif_change(mvm); 3436 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3437 ctx->rx_chains_static, 3438 ctx->rx_chains_dynamic); 3439 mutex_unlock(&mvm->mutex); 3440 } 3441 3442 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3443 struct ieee80211_vif *vif, 3444 struct ieee80211_chanctx_conf *ctx, 3445 bool switching_chanctx) 3446 { 3447 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3448 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3449 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3450 int ret; 3451 3452 lockdep_assert_held(&mvm->mutex); 3453 3454 mvmvif->phy_ctxt = phy_ctxt; 3455 3456 switch (vif->type) { 3457 case NL80211_IFTYPE_AP: 3458 /* only needed if we're switching chanctx (i.e. during CSA) */ 3459 if (switching_chanctx) { 3460 mvmvif->ap_ibss_active = true; 3461 break; 3462 } 3463 case NL80211_IFTYPE_ADHOC: 3464 /* 3465 * The AP binding flow is handled as part of the start_ap flow 3466 * (in bss_info_changed), similarly for IBSS. 3467 */ 3468 ret = 0; 3469 goto out; 3470 case NL80211_IFTYPE_STATION: 3471 break; 3472 case NL80211_IFTYPE_MONITOR: 3473 /* always disable PS when a monitor interface is active */ 3474 mvmvif->ps_disabled = true; 3475 break; 3476 default: 3477 ret = -EINVAL; 3478 goto out; 3479 } 3480 3481 ret = iwl_mvm_binding_add_vif(mvm, vif); 3482 if (ret) 3483 goto out; 3484 3485 /* 3486 * Power state must be updated before quotas, 3487 * otherwise fw will complain. 3488 */ 3489 iwl_mvm_power_update_mac(mvm); 3490 3491 /* Setting the quota at this stage is only required for monitor 3492 * interfaces. For the other types, the bss_info changed flow 3493 * will handle quota settings. 3494 */ 3495 if (vif->type == NL80211_IFTYPE_MONITOR) { 3496 mvmvif->monitor_active = true; 3497 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3498 if (ret) 3499 goto out_remove_binding; 3500 3501 ret = iwl_mvm_add_snif_sta(mvm, vif); 3502 if (ret) 3503 goto out_remove_binding; 3504 3505 } 3506 3507 /* Handle binding during CSA */ 3508 if (vif->type == NL80211_IFTYPE_AP) { 3509 iwl_mvm_update_quotas(mvm, false, NULL); 3510 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3511 } 3512 3513 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3514 u32 duration = 2 * vif->bss_conf.beacon_int; 3515 3516 /* iwl_mvm_protect_session() reads directly from the 3517 * device (the system time), so make sure it is 3518 * available. 3519 */ 3520 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3521 if (ret) 3522 goto out_remove_binding; 3523 3524 /* Protect the session to make sure we hear the first 3525 * beacon on the new channel. 3526 */ 3527 iwl_mvm_protect_session(mvm, vif, duration, duration, 3528 vif->bss_conf.beacon_int / 2, 3529 true); 3530 3531 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3532 3533 iwl_mvm_update_quotas(mvm, false, NULL); 3534 } 3535 3536 goto out; 3537 3538 out_remove_binding: 3539 iwl_mvm_binding_remove_vif(mvm, vif); 3540 iwl_mvm_power_update_mac(mvm); 3541 out: 3542 if (ret) 3543 mvmvif->phy_ctxt = NULL; 3544 return ret; 3545 } 3546 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3547 struct ieee80211_vif *vif, 3548 struct ieee80211_chanctx_conf *ctx) 3549 { 3550 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3551 int ret; 3552 3553 mutex_lock(&mvm->mutex); 3554 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3555 mutex_unlock(&mvm->mutex); 3556 3557 return ret; 3558 } 3559 3560 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3561 struct ieee80211_vif *vif, 3562 struct ieee80211_chanctx_conf *ctx, 3563 bool switching_chanctx) 3564 { 3565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3566 struct ieee80211_vif *disabled_vif = NULL; 3567 3568 lockdep_assert_held(&mvm->mutex); 3569 3570 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3571 3572 switch (vif->type) { 3573 case NL80211_IFTYPE_ADHOC: 3574 goto out; 3575 case NL80211_IFTYPE_MONITOR: 3576 mvmvif->monitor_active = false; 3577 mvmvif->ps_disabled = false; 3578 iwl_mvm_rm_snif_sta(mvm, vif); 3579 break; 3580 case NL80211_IFTYPE_AP: 3581 /* This part is triggered only during CSA */ 3582 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3583 goto out; 3584 3585 mvmvif->csa_countdown = false; 3586 3587 /* Set CS bit on all the stations */ 3588 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3589 3590 /* Save blocked iface, the timeout is set on the next beacon */ 3591 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3592 3593 mvmvif->ap_ibss_active = false; 3594 break; 3595 case NL80211_IFTYPE_STATION: 3596 if (!switching_chanctx) 3597 break; 3598 3599 disabled_vif = vif; 3600 3601 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3602 break; 3603 default: 3604 break; 3605 } 3606 3607 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3608 iwl_mvm_binding_remove_vif(mvm, vif); 3609 3610 out: 3611 mvmvif->phy_ctxt = NULL; 3612 iwl_mvm_power_update_mac(mvm); 3613 } 3614 3615 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3616 struct ieee80211_vif *vif, 3617 struct ieee80211_chanctx_conf *ctx) 3618 { 3619 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3620 3621 mutex_lock(&mvm->mutex); 3622 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3623 mutex_unlock(&mvm->mutex); 3624 } 3625 3626 static int 3627 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3628 struct ieee80211_vif_chanctx_switch *vifs) 3629 { 3630 int ret; 3631 3632 mutex_lock(&mvm->mutex); 3633 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3634 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3635 3636 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3637 if (ret) { 3638 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3639 goto out_reassign; 3640 } 3641 3642 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3643 true); 3644 if (ret) { 3645 IWL_ERR(mvm, 3646 "failed to assign new_ctx during channel switch\n"); 3647 goto out_remove; 3648 } 3649 3650 /* we don't support TDLS during DCM - can be caused by channel switch */ 3651 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3652 iwl_mvm_teardown_tdls_peers(mvm); 3653 3654 goto out; 3655 3656 out_remove: 3657 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3658 3659 out_reassign: 3660 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3661 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3662 goto out_restart; 3663 } 3664 3665 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3666 true)) { 3667 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3668 goto out_restart; 3669 } 3670 3671 goto out; 3672 3673 out_restart: 3674 /* things keep failing, better restart the hw */ 3675 iwl_mvm_nic_restart(mvm, false); 3676 3677 out: 3678 mutex_unlock(&mvm->mutex); 3679 3680 return ret; 3681 } 3682 3683 static int 3684 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 3685 struct ieee80211_vif_chanctx_switch *vifs) 3686 { 3687 int ret; 3688 3689 mutex_lock(&mvm->mutex); 3690 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3691 3692 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3693 true); 3694 if (ret) { 3695 IWL_ERR(mvm, 3696 "failed to assign new_ctx during channel switch\n"); 3697 goto out_reassign; 3698 } 3699 3700 goto out; 3701 3702 out_reassign: 3703 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3704 true)) { 3705 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3706 goto out_restart; 3707 } 3708 3709 goto out; 3710 3711 out_restart: 3712 /* things keep failing, better restart the hw */ 3713 iwl_mvm_nic_restart(mvm, false); 3714 3715 out: 3716 mutex_unlock(&mvm->mutex); 3717 3718 return ret; 3719 } 3720 3721 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 3722 struct ieee80211_vif_chanctx_switch *vifs, 3723 int n_vifs, 3724 enum ieee80211_chanctx_switch_mode mode) 3725 { 3726 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3727 int ret; 3728 3729 /* we only support a single-vif right now */ 3730 if (n_vifs > 1) 3731 return -EOPNOTSUPP; 3732 3733 switch (mode) { 3734 case CHANCTX_SWMODE_SWAP_CONTEXTS: 3735 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 3736 break; 3737 case CHANCTX_SWMODE_REASSIGN_VIF: 3738 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 3739 break; 3740 default: 3741 ret = -EOPNOTSUPP; 3742 break; 3743 } 3744 3745 return ret; 3746 } 3747 3748 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 3749 { 3750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3751 3752 return mvm->ibss_manager; 3753 } 3754 3755 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 3756 struct ieee80211_sta *sta, 3757 bool set) 3758 { 3759 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3760 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3761 3762 if (!mvm_sta || !mvm_sta->vif) { 3763 IWL_ERR(mvm, "Station is not associated to a vif\n"); 3764 return -EINVAL; 3765 } 3766 3767 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 3768 } 3769 3770 #ifdef CONFIG_NL80211_TESTMODE 3771 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 3772 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 3773 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 3774 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 3775 }; 3776 3777 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 3778 struct ieee80211_vif *vif, 3779 void *data, int len) 3780 { 3781 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 3782 int err; 3783 u32 noa_duration; 3784 3785 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy, 3786 NULL); 3787 if (err) 3788 return err; 3789 3790 if (!tb[IWL_MVM_TM_ATTR_CMD]) 3791 return -EINVAL; 3792 3793 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 3794 case IWL_MVM_TM_CMD_SET_NOA: 3795 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 3796 !vif->bss_conf.enable_beacon || 3797 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 3798 return -EINVAL; 3799 3800 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 3801 if (noa_duration >= vif->bss_conf.beacon_int) 3802 return -EINVAL; 3803 3804 mvm->noa_duration = noa_duration; 3805 mvm->noa_vif = vif; 3806 3807 return iwl_mvm_update_quotas(mvm, false, NULL); 3808 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 3809 /* must be associated client vif - ignore authorized */ 3810 if (!vif || vif->type != NL80211_IFTYPE_STATION || 3811 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 3812 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 3813 return -EINVAL; 3814 3815 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 3816 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3817 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3818 } 3819 3820 return -EOPNOTSUPP; 3821 } 3822 3823 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 3824 struct ieee80211_vif *vif, 3825 void *data, int len) 3826 { 3827 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3828 int err; 3829 3830 mutex_lock(&mvm->mutex); 3831 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 3832 mutex_unlock(&mvm->mutex); 3833 3834 return err; 3835 } 3836 #endif 3837 3838 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 3839 struct ieee80211_vif *vif, 3840 struct ieee80211_channel_switch *chsw) 3841 { 3842 /* By implementing this operation, we prevent mac80211 from 3843 * starting its own channel switch timer, so that we can call 3844 * ieee80211_chswitch_done() ourselves at the right time 3845 * (which is when the absence time event starts). 3846 */ 3847 3848 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 3849 "dummy channel switch op\n"); 3850 } 3851 3852 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 3853 struct ieee80211_vif *vif, 3854 struct ieee80211_channel_switch *chsw) 3855 { 3856 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3857 struct ieee80211_vif *csa_vif; 3858 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3859 u32 apply_time; 3860 int ret; 3861 3862 mutex_lock(&mvm->mutex); 3863 3864 mvmvif->csa_failed = false; 3865 3866 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 3867 chsw->chandef.center_freq1); 3868 3869 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 3870 ieee80211_vif_to_wdev(vif), 3871 FW_DBG_TRIGGER_CHANNEL_SWITCH); 3872 3873 switch (vif->type) { 3874 case NL80211_IFTYPE_AP: 3875 csa_vif = 3876 rcu_dereference_protected(mvm->csa_vif, 3877 lockdep_is_held(&mvm->mutex)); 3878 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 3879 "Another CSA is already in progress")) { 3880 ret = -EBUSY; 3881 goto out_unlock; 3882 } 3883 3884 /* we still didn't unblock tx. prevent new CS meanwhile */ 3885 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 3886 lockdep_is_held(&mvm->mutex))) { 3887 ret = -EBUSY; 3888 goto out_unlock; 3889 } 3890 3891 rcu_assign_pointer(mvm->csa_vif, vif); 3892 3893 if (WARN_ONCE(mvmvif->csa_countdown, 3894 "Previous CSA countdown didn't complete")) { 3895 ret = -EBUSY; 3896 goto out_unlock; 3897 } 3898 3899 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 3900 3901 break; 3902 case NL80211_IFTYPE_STATION: 3903 if (mvmvif->lqm_active) 3904 iwl_mvm_send_lqm_cmd(vif, 3905 LQM_CMD_OPERATION_STOP_MEASUREMENT, 3906 0, 0); 3907 3908 /* Schedule the time event to a bit before beacon 1, 3909 * to make sure we're in the new channel when the 3910 * GO/AP arrives. In case count <= 1 immediately schedule the 3911 * TE (this might result with some packet loss or connection 3912 * loss). 3913 */ 3914 if (chsw->count <= 1) 3915 apply_time = 0; 3916 else 3917 apply_time = chsw->device_timestamp + 3918 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 3919 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 3920 3921 if (chsw->block_tx) 3922 iwl_mvm_csa_client_absent(mvm, vif); 3923 3924 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 3925 apply_time); 3926 if (mvmvif->bf_data.bf_enabled) { 3927 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3928 if (ret) 3929 goto out_unlock; 3930 } 3931 3932 break; 3933 default: 3934 break; 3935 } 3936 3937 mvmvif->ps_disabled = true; 3938 3939 ret = iwl_mvm_power_update_ps(mvm); 3940 if (ret) 3941 goto out_unlock; 3942 3943 /* we won't be on this channel any longer */ 3944 iwl_mvm_teardown_tdls_peers(mvm); 3945 3946 out_unlock: 3947 mutex_unlock(&mvm->mutex); 3948 3949 return ret; 3950 } 3951 3952 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 3953 struct ieee80211_vif *vif) 3954 { 3955 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3956 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3957 int ret; 3958 3959 mutex_lock(&mvm->mutex); 3960 3961 if (mvmvif->csa_failed) { 3962 mvmvif->csa_failed = false; 3963 ret = -EIO; 3964 goto out_unlock; 3965 } 3966 3967 if (vif->type == NL80211_IFTYPE_STATION) { 3968 struct iwl_mvm_sta *mvmsta; 3969 3970 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 3971 mvmvif->ap_sta_id); 3972 3973 if (WARN_ON(!mvmsta)) { 3974 ret = -EIO; 3975 goto out_unlock; 3976 } 3977 3978 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 3979 3980 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3981 3982 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3983 if (ret) 3984 goto out_unlock; 3985 3986 iwl_mvm_stop_session_protection(mvm, vif); 3987 } 3988 3989 mvmvif->ps_disabled = false; 3990 3991 ret = iwl_mvm_power_update_ps(mvm); 3992 3993 out_unlock: 3994 mutex_unlock(&mvm->mutex); 3995 3996 return ret; 3997 } 3998 3999 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4000 { 4001 if (drop) { 4002 if (iwl_mvm_has_new_tx_api(mvm)) 4003 /* TODO new tx api */ 4004 WARN_ONCE(1, 4005 "Need to implement flush TX queue\n"); 4006 else 4007 iwl_mvm_flush_tx_path(mvm, 4008 iwl_mvm_flushable_queues(mvm) & queues, 4009 0); 4010 } else { 4011 if (iwl_mvm_has_new_tx_api(mvm)) { 4012 struct ieee80211_sta *sta; 4013 int i; 4014 4015 mutex_lock(&mvm->mutex); 4016 4017 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4018 sta = rcu_dereference_protected( 4019 mvm->fw_id_to_mac_id[i], 4020 lockdep_is_held(&mvm->mutex)); 4021 if (IS_ERR_OR_NULL(sta)) 4022 continue; 4023 4024 iwl_mvm_wait_sta_queues_empty(mvm, 4025 iwl_mvm_sta_from_mac80211(sta)); 4026 } 4027 4028 mutex_unlock(&mvm->mutex); 4029 } else { 4030 iwl_trans_wait_tx_queues_empty(mvm->trans, 4031 queues); 4032 } 4033 } 4034 } 4035 4036 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4037 struct ieee80211_vif *vif, u32 queues, bool drop) 4038 { 4039 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4040 struct iwl_mvm_vif *mvmvif; 4041 struct iwl_mvm_sta *mvmsta; 4042 struct ieee80211_sta *sta; 4043 int i; 4044 u32 msk = 0; 4045 4046 if (!vif) { 4047 iwl_mvm_flush_no_vif(mvm, queues, drop); 4048 return; 4049 } 4050 4051 if (vif->type != NL80211_IFTYPE_STATION) 4052 return; 4053 4054 /* Make sure we're done with the deferred traffic before flushing */ 4055 flush_work(&mvm->add_stream_wk); 4056 4057 mutex_lock(&mvm->mutex); 4058 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4059 4060 /* flush the AP-station and all TDLS peers */ 4061 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4062 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4063 lockdep_is_held(&mvm->mutex)); 4064 if (IS_ERR_OR_NULL(sta)) 4065 continue; 4066 4067 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4068 if (mvmsta->vif != vif) 4069 continue; 4070 4071 /* make sure only TDLS peers or the AP are flushed */ 4072 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4073 4074 if (drop) { 4075 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4076 IWL_ERR(mvm, "flush request fail\n"); 4077 } else { 4078 msk |= mvmsta->tfd_queue_msk; 4079 if (iwl_mvm_has_new_tx_api(mvm)) 4080 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4081 } 4082 } 4083 4084 mutex_unlock(&mvm->mutex); 4085 4086 /* this can take a while, and we may need/want other operations 4087 * to succeed while doing this, so do it without the mutex held 4088 */ 4089 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4090 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4091 } 4092 4093 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4094 struct survey_info *survey) 4095 { 4096 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4097 int ret; 4098 4099 memset(survey, 0, sizeof(*survey)); 4100 4101 /* only support global statistics right now */ 4102 if (idx != 0) 4103 return -ENOENT; 4104 4105 if (!fw_has_capa(&mvm->fw->ucode_capa, 4106 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4107 return -ENOENT; 4108 4109 mutex_lock(&mvm->mutex); 4110 4111 if (iwl_mvm_firmware_running(mvm)) { 4112 ret = iwl_mvm_request_statistics(mvm, false); 4113 if (ret) 4114 goto out; 4115 } 4116 4117 survey->filled = SURVEY_INFO_TIME | 4118 SURVEY_INFO_TIME_RX | 4119 SURVEY_INFO_TIME_TX | 4120 SURVEY_INFO_TIME_SCAN; 4121 survey->time = mvm->accu_radio_stats.on_time_rf + 4122 mvm->radio_stats.on_time_rf; 4123 do_div(survey->time, USEC_PER_MSEC); 4124 4125 survey->time_rx = mvm->accu_radio_stats.rx_time + 4126 mvm->radio_stats.rx_time; 4127 do_div(survey->time_rx, USEC_PER_MSEC); 4128 4129 survey->time_tx = mvm->accu_radio_stats.tx_time + 4130 mvm->radio_stats.tx_time; 4131 do_div(survey->time_tx, USEC_PER_MSEC); 4132 4133 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4134 mvm->radio_stats.on_time_scan; 4135 do_div(survey->time_scan, USEC_PER_MSEC); 4136 4137 ret = 0; 4138 out: 4139 mutex_unlock(&mvm->mutex); 4140 return ret; 4141 } 4142 4143 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4144 struct ieee80211_vif *vif, 4145 struct ieee80211_sta *sta, 4146 struct station_info *sinfo) 4147 { 4148 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4149 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4150 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4151 4152 if (mvmsta->avg_energy) { 4153 sinfo->signal_avg = mvmsta->avg_energy; 4154 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); 4155 } 4156 4157 if (!fw_has_capa(&mvm->fw->ucode_capa, 4158 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4159 return; 4160 4161 /* if beacon filtering isn't on mac80211 does it anyway */ 4162 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4163 return; 4164 4165 if (!vif->bss_conf.assoc) 4166 return; 4167 4168 mutex_lock(&mvm->mutex); 4169 4170 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4171 goto unlock; 4172 4173 if (iwl_mvm_request_statistics(mvm, false)) 4174 goto unlock; 4175 4176 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4177 mvmvif->beacon_stats.accu_num_beacons; 4178 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX); 4179 if (mvmvif->beacon_stats.avg_signal) { 4180 /* firmware only reports a value after RXing a few beacons */ 4181 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4182 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4183 } 4184 unlock: 4185 mutex_unlock(&mvm->mutex); 4186 } 4187 4188 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4189 struct ieee80211_vif *vif, 4190 const struct ieee80211_event *event) 4191 { 4192 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4193 do { \ 4194 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4195 break; \ 4196 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4197 } while (0) 4198 4199 struct iwl_fw_dbg_trigger_tlv *trig; 4200 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4201 4202 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 4203 return; 4204 4205 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 4206 trig_mlme = (void *)trig->data; 4207 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4208 ieee80211_vif_to_wdev(vif), trig)) 4209 return; 4210 4211 if (event->u.mlme.data == ASSOC_EVENT) { 4212 if (event->u.mlme.status == MLME_DENIED) 4213 CHECK_MLME_TRIGGER(stop_assoc_denied, 4214 "DENIED ASSOC: reason %d", 4215 event->u.mlme.reason); 4216 else if (event->u.mlme.status == MLME_TIMEOUT) 4217 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4218 "ASSOC TIMEOUT"); 4219 } else if (event->u.mlme.data == AUTH_EVENT) { 4220 if (event->u.mlme.status == MLME_DENIED) 4221 CHECK_MLME_TRIGGER(stop_auth_denied, 4222 "DENIED AUTH: reason %d", 4223 event->u.mlme.reason); 4224 else if (event->u.mlme.status == MLME_TIMEOUT) 4225 CHECK_MLME_TRIGGER(stop_auth_timeout, 4226 "AUTH TIMEOUT"); 4227 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4228 CHECK_MLME_TRIGGER(stop_rx_deauth, 4229 "DEAUTH RX %d", event->u.mlme.reason); 4230 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4231 CHECK_MLME_TRIGGER(stop_tx_deauth, 4232 "DEAUTH TX %d", event->u.mlme.reason); 4233 } 4234 #undef CHECK_MLME_TRIGGER 4235 } 4236 4237 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4238 struct ieee80211_vif *vif, 4239 const struct ieee80211_event *event) 4240 { 4241 struct iwl_fw_dbg_trigger_tlv *trig; 4242 struct iwl_fw_dbg_trigger_ba *ba_trig; 4243 4244 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4245 return; 4246 4247 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4248 ba_trig = (void *)trig->data; 4249 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4250 ieee80211_vif_to_wdev(vif), trig)) 4251 return; 4252 4253 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4254 return; 4255 4256 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4257 "BAR received from %pM, tid %d, ssn %d", 4258 event->u.ba.sta->addr, event->u.ba.tid, 4259 event->u.ba.ssn); 4260 } 4261 4262 static void 4263 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 4264 struct ieee80211_vif *vif, 4265 const struct ieee80211_event *event) 4266 { 4267 struct iwl_fw_dbg_trigger_tlv *trig; 4268 struct iwl_fw_dbg_trigger_ba *ba_trig; 4269 4270 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4271 return; 4272 4273 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4274 ba_trig = (void *)trig->data; 4275 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, 4276 ieee80211_vif_to_wdev(vif), trig)) 4277 return; 4278 4279 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid))) 4280 return; 4281 4282 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 4283 "Frame from %pM timed out, tid %d", 4284 event->u.ba.sta->addr, event->u.ba.tid); 4285 } 4286 4287 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4288 struct ieee80211_vif *vif, 4289 const struct ieee80211_event *event) 4290 { 4291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4292 4293 switch (event->type) { 4294 case MLME_EVENT: 4295 iwl_mvm_event_mlme_callback(mvm, vif, event); 4296 break; 4297 case BAR_RX_EVENT: 4298 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4299 break; 4300 case BA_FRAME_TIMEOUT: 4301 iwl_mvm_event_frame_timeout_callback(mvm, vif, event); 4302 break; 4303 default: 4304 break; 4305 } 4306 } 4307 4308 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4309 struct iwl_mvm_internal_rxq_notif *notif, 4310 u32 size) 4311 { 4312 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4313 int ret; 4314 4315 lockdep_assert_held(&mvm->mutex); 4316 4317 /* TODO - remove a000 disablement when we have RXQ config API */ 4318 if (!iwl_mvm_has_new_rx_api(mvm) || 4319 mvm->trans->cfg->device_family == IWL_DEVICE_FAMILY_A000) 4320 return; 4321 4322 notif->cookie = mvm->queue_sync_cookie; 4323 4324 if (notif->sync) 4325 atomic_set(&mvm->queue_sync_counter, 4326 mvm->trans->num_rx_queues); 4327 4328 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4329 if (ret) { 4330 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4331 goto out; 4332 } 4333 4334 if (notif->sync) { 4335 ret = wait_event_timeout(mvm->rx_sync_waitq, 4336 atomic_read(&mvm->queue_sync_counter) == 0 || 4337 iwl_mvm_is_radio_killed(mvm), 4338 HZ); 4339 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 4340 } 4341 4342 out: 4343 atomic_set(&mvm->queue_sync_counter, 0); 4344 mvm->queue_sync_cookie++; 4345 } 4346 4347 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4348 { 4349 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4350 struct iwl_mvm_internal_rxq_notif data = { 4351 .type = IWL_MVM_RXQ_EMPTY, 4352 .sync = 1, 4353 }; 4354 4355 mutex_lock(&mvm->mutex); 4356 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4357 mutex_unlock(&mvm->mutex); 4358 } 4359 4360 const struct ieee80211_ops iwl_mvm_hw_ops = { 4361 .tx = iwl_mvm_mac_tx, 4362 .ampdu_action = iwl_mvm_mac_ampdu_action, 4363 .start = iwl_mvm_mac_start, 4364 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4365 .stop = iwl_mvm_mac_stop, 4366 .add_interface = iwl_mvm_mac_add_interface, 4367 .remove_interface = iwl_mvm_mac_remove_interface, 4368 .config = iwl_mvm_mac_config, 4369 .prepare_multicast = iwl_mvm_prepare_multicast, 4370 .configure_filter = iwl_mvm_configure_filter, 4371 .config_iface_filter = iwl_mvm_config_iface_filter, 4372 .bss_info_changed = iwl_mvm_bss_info_changed, 4373 .hw_scan = iwl_mvm_mac_hw_scan, 4374 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4375 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4376 .sta_state = iwl_mvm_mac_sta_state, 4377 .sta_notify = iwl_mvm_mac_sta_notify, 4378 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4379 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4380 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4381 .sta_rc_update = iwl_mvm_sta_rc_update, 4382 .conf_tx = iwl_mvm_mac_conf_tx, 4383 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4384 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4385 .flush = iwl_mvm_mac_flush, 4386 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4387 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4388 .set_key = iwl_mvm_mac_set_key, 4389 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4390 .remain_on_channel = iwl_mvm_roc, 4391 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4392 .add_chanctx = iwl_mvm_add_chanctx, 4393 .remove_chanctx = iwl_mvm_remove_chanctx, 4394 .change_chanctx = iwl_mvm_change_chanctx, 4395 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4396 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4397 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4398 4399 .start_ap = iwl_mvm_start_ap_ibss, 4400 .stop_ap = iwl_mvm_stop_ap_ibss, 4401 .join_ibss = iwl_mvm_start_ap_ibss, 4402 .leave_ibss = iwl_mvm_stop_ap_ibss, 4403 4404 .tx_last_beacon = iwl_mvm_tx_last_beacon, 4405 4406 .set_tim = iwl_mvm_set_tim, 4407 4408 .channel_switch = iwl_mvm_channel_switch, 4409 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4410 .post_channel_switch = iwl_mvm_post_channel_switch, 4411 4412 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4413 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4414 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4415 4416 .event_callback = iwl_mvm_mac_event_callback, 4417 4418 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4419 4420 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4421 4422 #ifdef CONFIG_PM_SLEEP 4423 /* look at d3.c */ 4424 .suspend = iwl_mvm_suspend, 4425 .resume = iwl_mvm_resume, 4426 .set_wakeup = iwl_mvm_set_wakeup, 4427 .set_rekey_data = iwl_mvm_set_rekey_data, 4428 #if IS_ENABLED(CONFIG_IPV6) 4429 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4430 #endif 4431 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4432 #endif 4433 .get_survey = iwl_mvm_mac_get_survey, 4434 .sta_statistics = iwl_mvm_mac_sta_statistics, 4435 }; 4436