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 - 2014 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 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 - 2014 Intel Mobile Communications GmbH 37 * All rights reserved. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 43 * * Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * * Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in 47 * the documentation and/or other materials provided with the 48 * distribution. 49 * * Neither the name Intel Corporation nor the names of its 50 * contributors may be used to endorse or promote products derived 51 * from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 * 65 *****************************************************************************/ 66 #include <linux/kernel.h> 67 #include <linux/slab.h> 68 #include <linux/skbuff.h> 69 #include <linux/netdevice.h> 70 #include <linux/etherdevice.h> 71 #include <linux/ip.h> 72 #include <linux/if_arp.h> 73 #include <linux/time.h> 74 #include <net/mac80211.h> 75 #include <net/ieee80211_radiotap.h> 76 #include <net/tcp.h> 77 78 #include "iwl-op-mode.h" 79 #include "iwl-io.h" 80 #include "mvm.h" 81 #include "sta.h" 82 #include "time-event.h" 83 #include "iwl-eeprom-parse.h" 84 #include "iwl-phy-db.h" 85 #include "testmode.h" 86 #include "iwl-fw-error-dump.h" 87 #include "iwl-prph.h" 88 #include "iwl-nvm-parse.h" 89 #include "fw-dbg.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 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) 449 ieee80211_hw_set(hw, AP_LINK_PS); 450 451 if (mvm->trans->num_rx_queues > 1) 452 ieee80211_hw_set(hw, USES_RSS); 453 454 if (mvm->trans->max_skb_frags) 455 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 456 457 if (!iwl_mvm_is_dqa_supported(mvm)) 458 hw->queues = mvm->first_agg_queue; 459 else 460 hw->queues = IEEE80211_MAX_QUEUES; 461 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 462 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 463 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 464 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 465 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 466 467 hw->radiotap_timestamp.units_pos = 468 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 469 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 470 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 471 hw->radiotap_timestamp.accuracy = 22; 472 473 hw->rate_control_algorithm = "iwl-mvm-rs"; 474 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 475 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 476 477 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 478 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 479 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 480 hw->wiphy->cipher_suites = mvm->ciphers; 481 482 if (iwl_mvm_has_new_rx_api(mvm)) { 483 mvm->ciphers[hw->wiphy->n_cipher_suites] = 484 WLAN_CIPHER_SUITE_GCMP; 485 hw->wiphy->n_cipher_suites++; 486 mvm->ciphers[hw->wiphy->n_cipher_suites] = 487 WLAN_CIPHER_SUITE_GCMP_256; 488 hw->wiphy->n_cipher_suites++; 489 } 490 491 /* Enable 11w if software crypto is not enabled (as the 492 * firmware will interpret some mgmt packets, so enabling it 493 * with software crypto isn't safe). 494 */ 495 if (!iwlwifi_mod_params.sw_crypto) { 496 ieee80211_hw_set(hw, MFP_CAPABLE); 497 mvm->ciphers[hw->wiphy->n_cipher_suites] = 498 WLAN_CIPHER_SUITE_AES_CMAC; 499 hw->wiphy->n_cipher_suites++; 500 if (iwl_mvm_has_new_rx_api(mvm)) { 501 mvm->ciphers[hw->wiphy->n_cipher_suites] = 502 WLAN_CIPHER_SUITE_BIP_GMAC_128; 503 hw->wiphy->n_cipher_suites++; 504 mvm->ciphers[hw->wiphy->n_cipher_suites] = 505 WLAN_CIPHER_SUITE_BIP_GMAC_256; 506 hw->wiphy->n_cipher_suites++; 507 } 508 } 509 510 /* currently FW API supports only one optional cipher scheme */ 511 if (mvm->fw->cs[0].cipher) { 512 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 513 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 514 515 mvm->hw->n_cipher_schemes = 1; 516 517 cs->cipher = le32_to_cpu(fwcs->cipher); 518 cs->iftype = BIT(NL80211_IFTYPE_STATION); 519 cs->hdr_len = fwcs->hdr_len; 520 cs->pn_len = fwcs->pn_len; 521 cs->pn_off = fwcs->pn_off; 522 cs->key_idx_off = fwcs->key_idx_off; 523 cs->key_idx_mask = fwcs->key_idx_mask; 524 cs->key_idx_shift = fwcs->key_idx_shift; 525 cs->mic_len = fwcs->mic_len; 526 527 mvm->hw->cipher_schemes = mvm->cs; 528 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 529 hw->wiphy->n_cipher_suites++; 530 } 531 532 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 533 hw->wiphy->features |= 534 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 535 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 536 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 537 538 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 539 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 540 hw->chanctx_data_size = sizeof(u16); 541 542 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 543 BIT(NL80211_IFTYPE_P2P_CLIENT) | 544 BIT(NL80211_IFTYPE_AP) | 545 BIT(NL80211_IFTYPE_P2P_GO) | 546 BIT(NL80211_IFTYPE_P2P_DEVICE) | 547 BIT(NL80211_IFTYPE_ADHOC); 548 549 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 550 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 551 if (iwl_mvm_is_lar_supported(mvm)) 552 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 553 else 554 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 555 REGULATORY_DISABLE_BEACON_HINTS; 556 557 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 558 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 559 560 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 561 hw->wiphy->n_iface_combinations = 562 ARRAY_SIZE(iwl_mvm_iface_combinations); 563 564 hw->wiphy->max_remain_on_channel_duration = 10000; 565 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 566 /* we can compensate an offset of up to 3 channels = 15 MHz */ 567 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5; 568 569 /* Extract MAC address */ 570 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 571 hw->wiphy->addresses = mvm->addresses; 572 hw->wiphy->n_addresses = 1; 573 574 /* Extract additional MAC addresses if available */ 575 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 576 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 577 578 for (i = 1; i < num_mac; i++) { 579 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 580 ETH_ALEN); 581 mvm->addresses[i].addr[5]++; 582 hw->wiphy->n_addresses++; 583 } 584 585 iwl_mvm_reset_phy_ctxts(mvm); 586 587 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 588 589 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 590 591 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 592 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 593 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 594 595 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 596 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 597 else 598 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 599 600 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 601 hw->wiphy->bands[NL80211_BAND_2GHZ] = 602 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 603 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 604 hw->wiphy->bands[NL80211_BAND_5GHZ] = 605 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 606 607 if (fw_has_capa(&mvm->fw->ucode_capa, 608 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 609 fw_has_api(&mvm->fw->ucode_capa, 610 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 611 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 612 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 613 } 614 615 hw->wiphy->hw_version = mvm->trans->hw_id; 616 617 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 618 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 619 else 620 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 621 622 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; 623 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 624 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 625 /* we create the 802.11 header and zero length SSID IE. */ 626 hw->wiphy->max_sched_scan_ie_len = 627 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 628 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 629 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 630 631 /* 632 * the firmware uses u8 for num of iterations, but 0xff is saved for 633 * infinite loop, so the maximum number of iterations is actually 254. 634 */ 635 hw->wiphy->max_sched_scan_plan_iterations = 254; 636 637 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 638 NL80211_FEATURE_LOW_PRIORITY_SCAN | 639 NL80211_FEATURE_P2P_GO_OPPPS | 640 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 641 NL80211_FEATURE_DYNAMIC_SMPS | 642 NL80211_FEATURE_STATIC_SMPS | 643 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 644 645 if (fw_has_capa(&mvm->fw->ucode_capa, 646 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 647 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 648 if (fw_has_capa(&mvm->fw->ucode_capa, 649 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 650 hw->wiphy->features |= NL80211_FEATURE_QUIET; 651 652 if (fw_has_capa(&mvm->fw->ucode_capa, 653 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 654 hw->wiphy->features |= 655 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 656 657 if (fw_has_capa(&mvm->fw->ucode_capa, 658 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 659 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 660 661 if (fw_has_api(&mvm->fw->ucode_capa, 662 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 663 wiphy_ext_feature_set(hw->wiphy, 664 NL80211_EXT_FEATURE_SCAN_START_TIME); 665 wiphy_ext_feature_set(hw->wiphy, 666 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 667 wiphy_ext_feature_set(hw->wiphy, 668 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 669 } 670 671 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 672 673 #ifdef CONFIG_PM_SLEEP 674 if (iwl_mvm_is_d0i3_supported(mvm) && 675 device_can_wakeup(mvm->trans->dev)) { 676 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 677 hw->wiphy->wowlan = &mvm->wowlan; 678 } 679 680 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec && 681 mvm->trans->ops->d3_suspend && 682 mvm->trans->ops->d3_resume && 683 device_can_wakeup(mvm->trans->dev)) { 684 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 685 WIPHY_WOWLAN_DISCONNECT | 686 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 687 WIPHY_WOWLAN_RFKILL_RELEASE | 688 WIPHY_WOWLAN_NET_DETECT; 689 if (!iwlwifi_mod_params.sw_crypto) 690 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 691 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 692 WIPHY_WOWLAN_4WAY_HANDSHAKE; 693 694 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 695 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 696 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 697 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 698 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support; 699 hw->wiphy->wowlan = &mvm->wowlan; 700 } 701 #endif 702 703 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 704 /* assign default bcast filtering configuration */ 705 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 706 #endif 707 708 ret = iwl_mvm_leds_init(mvm); 709 if (ret) 710 return ret; 711 712 if (fw_has_capa(&mvm->fw->ucode_capa, 713 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 714 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 715 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 716 ieee80211_hw_set(hw, TDLS_WIDER_BW); 717 } 718 719 if (fw_has_capa(&mvm->fw->ucode_capa, 720 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 721 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 722 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 723 } 724 725 hw->netdev_features |= mvm->cfg->features; 726 if (!iwl_mvm_is_csum_supported(mvm)) { 727 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 728 NETIF_F_RXCSUM); 729 /* We may support SW TX CSUM */ 730 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 731 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 732 } 733 734 ret = ieee80211_register_hw(mvm->hw); 735 if (ret) 736 iwl_mvm_leds_exit(mvm); 737 738 if (mvm->cfg->vht_mu_mimo_supported) 739 wiphy_ext_feature_set(hw->wiphy, 740 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 741 742 return ret; 743 } 744 745 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 746 struct ieee80211_sta *sta, 747 struct sk_buff *skb) 748 { 749 struct iwl_mvm_sta *mvmsta; 750 bool defer = false; 751 752 /* 753 * double check the IN_D0I3 flag both before and after 754 * taking the spinlock, in order to prevent taking 755 * the spinlock when not needed. 756 */ 757 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 758 return false; 759 760 spin_lock(&mvm->d0i3_tx_lock); 761 /* 762 * testing the flag again ensures the skb dequeue 763 * loop (on d0i3 exit) hasn't run yet. 764 */ 765 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 766 goto out; 767 768 mvmsta = iwl_mvm_sta_from_mac80211(sta); 769 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT || 770 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 771 goto out; 772 773 __skb_queue_tail(&mvm->d0i3_tx, skb); 774 ieee80211_stop_queues(mvm->hw); 775 776 /* trigger wakeup */ 777 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 778 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 779 780 defer = true; 781 out: 782 spin_unlock(&mvm->d0i3_tx_lock); 783 return defer; 784 } 785 786 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 787 struct ieee80211_tx_control *control, 788 struct sk_buff *skb) 789 { 790 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 791 struct ieee80211_sta *sta = control->sta; 792 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 793 struct ieee80211_hdr *hdr = (void *)skb->data; 794 795 if (iwl_mvm_is_radio_killed(mvm)) { 796 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 797 goto drop; 798 } 799 800 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && 801 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 802 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 803 goto drop; 804 805 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */ 806 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER && 807 ieee80211_is_mgmt(hdr->frame_control) && 808 !ieee80211_is_deauth(hdr->frame_control) && 809 !ieee80211_is_disassoc(hdr->frame_control) && 810 !ieee80211_is_action(hdr->frame_control))) 811 sta = NULL; 812 813 if (sta) { 814 if (iwl_mvm_defer_tx(mvm, sta, skb)) 815 return; 816 if (iwl_mvm_tx_skb(mvm, skb, sta)) 817 goto drop; 818 return; 819 } 820 821 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 822 goto drop; 823 return; 824 drop: 825 ieee80211_free_txskb(hw, skb); 826 } 827 828 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) 829 { 830 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) 831 return false; 832 return true; 833 } 834 835 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) 836 { 837 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) 838 return false; 839 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) 840 return true; 841 842 /* enabled by default */ 843 return true; 844 } 845 846 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 847 do { \ 848 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 849 break; \ 850 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \ 851 } while (0) 852 853 static void 854 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 855 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 856 enum ieee80211_ampdu_mlme_action action) 857 { 858 struct iwl_fw_dbg_trigger_tlv *trig; 859 struct iwl_fw_dbg_trigger_ba *ba_trig; 860 861 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 862 return; 863 864 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 865 ba_trig = (void *)trig->data; 866 867 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 868 return; 869 870 switch (action) { 871 case IEEE80211_AMPDU_TX_OPERATIONAL: { 872 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 873 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 874 875 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 876 "TX AGG START: MAC %pM tid %d ssn %d\n", 877 sta->addr, tid, tid_data->ssn); 878 break; 879 } 880 case IEEE80211_AMPDU_TX_STOP_CONT: 881 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 882 "TX AGG STOP: MAC %pM tid %d\n", 883 sta->addr, tid); 884 break; 885 case IEEE80211_AMPDU_RX_START: 886 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 887 "RX AGG START: MAC %pM tid %d ssn %d\n", 888 sta->addr, tid, rx_ba_ssn); 889 break; 890 case IEEE80211_AMPDU_RX_STOP: 891 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 892 "RX AGG STOP: MAC %pM tid %d\n", 893 sta->addr, tid); 894 break; 895 default: 896 break; 897 } 898 } 899 900 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 901 struct ieee80211_vif *vif, 902 struct ieee80211_ampdu_params *params) 903 { 904 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 905 int ret; 906 bool tx_agg_ref = false; 907 struct ieee80211_sta *sta = params->sta; 908 enum ieee80211_ampdu_mlme_action action = params->action; 909 u16 tid = params->tid; 910 u16 *ssn = ¶ms->ssn; 911 u8 buf_size = params->buf_size; 912 bool amsdu = params->amsdu; 913 u16 timeout = params->timeout; 914 915 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 916 sta->addr, tid, action); 917 918 if (!(mvm->nvm_data->sku_cap_11n_enable)) 919 return -EACCES; 920 921 /* return from D0i3 before starting a new Tx aggregation */ 922 switch (action) { 923 case IEEE80211_AMPDU_TX_START: 924 case IEEE80211_AMPDU_TX_STOP_CONT: 925 case IEEE80211_AMPDU_TX_STOP_FLUSH: 926 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 927 case IEEE80211_AMPDU_TX_OPERATIONAL: 928 /* 929 * for tx start, wait synchronously until D0i3 exit to 930 * get the correct sequence number for the tid. 931 * additionally, some other ampdu actions use direct 932 * target access, which is not handled automatically 933 * by the trans layer (unlike commands), so wait for 934 * d0i3 exit in these cases as well. 935 */ 936 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 937 if (ret) 938 return ret; 939 940 tx_agg_ref = true; 941 break; 942 default: 943 break; 944 } 945 946 mutex_lock(&mvm->mutex); 947 948 switch (action) { 949 case IEEE80211_AMPDU_RX_START: 950 if (!iwl_enable_rx_ampdu(mvm->cfg)) { 951 ret = -EINVAL; 952 break; 953 } 954 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 955 timeout); 956 break; 957 case IEEE80211_AMPDU_RX_STOP: 958 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 959 timeout); 960 break; 961 case IEEE80211_AMPDU_TX_START: 962 if (!iwl_enable_tx_ampdu(mvm->cfg)) { 963 ret = -EINVAL; 964 break; 965 } 966 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 967 break; 968 case IEEE80211_AMPDU_TX_STOP_CONT: 969 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 970 break; 971 case IEEE80211_AMPDU_TX_STOP_FLUSH: 972 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 973 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 974 break; 975 case IEEE80211_AMPDU_TX_OPERATIONAL: 976 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 977 buf_size, amsdu); 978 break; 979 default: 980 WARN_ON_ONCE(1); 981 ret = -EINVAL; 982 break; 983 } 984 985 if (!ret) { 986 u16 rx_ba_ssn = 0; 987 988 if (action == IEEE80211_AMPDU_RX_START) 989 rx_ba_ssn = *ssn; 990 991 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 992 rx_ba_ssn, action); 993 } 994 mutex_unlock(&mvm->mutex); 995 996 /* 997 * If the tid is marked as started, we won't use it for offloaded 998 * traffic on the next D0i3 entry. It's safe to unref. 999 */ 1000 if (tx_agg_ref) 1001 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 1002 1003 return ret; 1004 } 1005 1006 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1007 struct ieee80211_vif *vif) 1008 { 1009 struct iwl_mvm *mvm = data; 1010 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1011 1012 mvmvif->uploaded = false; 1013 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 1014 1015 spin_lock_bh(&mvm->time_event_lock); 1016 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1017 spin_unlock_bh(&mvm->time_event_lock); 1018 1019 mvmvif->phy_ctxt = NULL; 1020 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1021 } 1022 1023 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1024 { 1025 /* clear the D3 reconfig, we only need it to avoid dumping a 1026 * firmware coredump on reconfiguration, we shouldn't do that 1027 * on D3->D0 transition 1028 */ 1029 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) { 1030 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert; 1031 iwl_mvm_fw_error_dump(mvm); 1032 } 1033 1034 /* cleanup all stale references (scan, roc), but keep the 1035 * ucode_down ref until reconfig is complete 1036 */ 1037 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 1038 1039 iwl_mvm_stop_device(mvm); 1040 1041 mvm->scan_status = 0; 1042 mvm->ps_disabled = false; 1043 mvm->calibrating = false; 1044 1045 /* just in case one was running */ 1046 iwl_mvm_cleanup_roc_te(mvm); 1047 ieee80211_remain_on_channel_expired(mvm->hw); 1048 1049 /* 1050 * cleanup all interfaces, even inactive ones, as some might have 1051 * gone down during the HW restart 1052 */ 1053 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1054 1055 mvm->p2p_device_vif = NULL; 1056 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1057 1058 iwl_mvm_reset_phy_ctxts(mvm); 1059 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1060 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); 1061 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames)); 1062 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained)); 1063 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1064 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1065 1066 ieee80211_wake_queues(mvm->hw); 1067 1068 /* clear any stale d0i3 state */ 1069 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1070 1071 mvm->vif_count = 0; 1072 mvm->rx_ba_sessions = 0; 1073 mvm->fw_dbg_conf = FW_DBG_INVALID; 1074 1075 /* keep statistics ticking */ 1076 iwl_mvm_accu_radio_stats(mvm); 1077 } 1078 1079 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1080 { 1081 int ret; 1082 1083 lockdep_assert_held(&mvm->mutex); 1084 1085 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1086 /* Clean up some internal and mac80211 state on restart */ 1087 iwl_mvm_restart_cleanup(mvm); 1088 } else { 1089 /* Hold the reference to prevent runtime suspend while 1090 * the start procedure runs. It's a bit confusing 1091 * that the UCODE_DOWN reference is taken, but it just 1092 * means "UCODE is not UP yet". ( TODO: rename this 1093 * reference). 1094 */ 1095 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1096 } 1097 ret = iwl_mvm_up(mvm); 1098 1099 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1100 /* Something went wrong - we need to finish some cleanup 1101 * that normally iwl_mvm_mac_restart_complete() below 1102 * would do. 1103 */ 1104 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1105 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1106 } 1107 1108 return ret; 1109 } 1110 1111 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1112 { 1113 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1114 int ret; 1115 1116 /* Some hw restart cleanups must not hold the mutex */ 1117 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1118 /* 1119 * Make sure we are out of d0i3. This is needed 1120 * to make sure the reference accounting is correct 1121 * (and there is no stale d0i3_exit_work). 1122 */ 1123 wait_event_timeout(mvm->d0i3_exit_waitq, 1124 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1125 &mvm->status), 1126 HZ); 1127 } 1128 1129 mutex_lock(&mvm->mutex); 1130 ret = __iwl_mvm_mac_start(mvm); 1131 mutex_unlock(&mvm->mutex); 1132 1133 return ret; 1134 } 1135 1136 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1137 { 1138 int ret; 1139 1140 mutex_lock(&mvm->mutex); 1141 1142 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1143 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1144 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1145 if (ret) 1146 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1147 ret); 1148 1149 /* allow transport/FW low power modes */ 1150 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1151 1152 /* 1153 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1154 * of packets the FW sent out, so we must reconnect. 1155 */ 1156 iwl_mvm_teardown_tdls_peers(mvm); 1157 1158 mutex_unlock(&mvm->mutex); 1159 } 1160 1161 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1162 { 1163 if (iwl_mvm_is_d0i3_supported(mvm) && 1164 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1165 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1166 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1167 &mvm->status), 1168 HZ), 1169 "D0i3 exit on resume timed out\n"); 1170 } 1171 1172 static void 1173 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1174 enum ieee80211_reconfig_type reconfig_type) 1175 { 1176 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1177 1178 switch (reconfig_type) { 1179 case IEEE80211_RECONFIG_TYPE_RESTART: 1180 iwl_mvm_restart_complete(mvm); 1181 break; 1182 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1183 iwl_mvm_resume_complete(mvm); 1184 break; 1185 } 1186 } 1187 1188 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1189 { 1190 lockdep_assert_held(&mvm->mutex); 1191 1192 /* firmware counters are obviously reset now, but we shouldn't 1193 * partially track so also clear the fw_reset_accu counters. 1194 */ 1195 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1196 1197 /* async_handlers_wk is now blocked */ 1198 1199 /* 1200 * The work item could be running or queued if the 1201 * ROC time event stops just as we get here. 1202 */ 1203 flush_work(&mvm->roc_done_wk); 1204 1205 iwl_mvm_stop_device(mvm); 1206 1207 iwl_mvm_async_handlers_purge(mvm); 1208 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1209 1210 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1211 iwl_mvm_del_aux_sta(mvm); 1212 1213 /* 1214 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() 1215 * won't be called in this case). 1216 * But make sure to cleanup interfaces that have gone down before/during 1217 * HW restart was requested. 1218 */ 1219 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1220 ieee80211_iterate_interfaces(mvm->hw, 0, 1221 iwl_mvm_cleanup_iterator, mvm); 1222 1223 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1224 * make sure there's nothing left there and warn if any is found. 1225 */ 1226 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1227 int i; 1228 1229 for (i = 0; i < mvm->max_scans; i++) { 1230 if (WARN_ONCE(mvm->scan_uid_status[i], 1231 "UMAC scan UID %d status was not cleaned\n", 1232 i)) 1233 mvm->scan_uid_status[i] = 0; 1234 } 1235 } 1236 } 1237 1238 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1239 { 1240 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1241 1242 flush_work(&mvm->d0i3_exit_work); 1243 flush_work(&mvm->async_handlers_wk); 1244 flush_work(&mvm->add_stream_wk); 1245 cancel_delayed_work_sync(&mvm->fw_dump_wk); 1246 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1247 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1248 iwl_mvm_free_fw_dump_desc(mvm); 1249 1250 mutex_lock(&mvm->mutex); 1251 __iwl_mvm_mac_stop(mvm); 1252 mutex_unlock(&mvm->mutex); 1253 1254 /* 1255 * The worker might have been waiting for the mutex, let it run and 1256 * discover that its list is now empty. 1257 */ 1258 cancel_work_sync(&mvm->async_handlers_wk); 1259 } 1260 1261 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1262 { 1263 u16 i; 1264 1265 lockdep_assert_held(&mvm->mutex); 1266 1267 for (i = 0; i < NUM_PHY_CTX; i++) 1268 if (!mvm->phy_ctxts[i].ref) 1269 return &mvm->phy_ctxts[i]; 1270 1271 IWL_ERR(mvm, "No available PHY context\n"); 1272 return NULL; 1273 } 1274 1275 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1276 s16 tx_power) 1277 { 1278 struct iwl_dev_tx_power_cmd cmd = { 1279 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1280 .v3.mac_context_id = 1281 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1282 .v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1283 }; 1284 int len = sizeof(cmd); 1285 1286 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1287 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1288 1289 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1290 len = sizeof(cmd.v3); 1291 1292 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1293 } 1294 1295 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1296 struct ieee80211_vif *vif) 1297 { 1298 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1299 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1300 int ret; 1301 1302 mvmvif->mvm = mvm; 1303 1304 /* 1305 * make sure D0i3 exit is completed, otherwise a target access 1306 * during tx queue configuration could be done when still in 1307 * D0i3 state. 1308 */ 1309 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1310 if (ret) 1311 return ret; 1312 1313 /* 1314 * Not much to do here. The stack will not allow interface 1315 * types or combinations that we didn't advertise, so we 1316 * don't really have to check the types. 1317 */ 1318 1319 mutex_lock(&mvm->mutex); 1320 1321 /* make sure that beacon statistics don't go backwards with FW reset */ 1322 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1323 mvmvif->beacon_stats.accu_num_beacons += 1324 mvmvif->beacon_stats.num_beacons; 1325 1326 /* Allocate resources for the MAC context, and add it to the fw */ 1327 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1328 if (ret) 1329 goto out_unlock; 1330 1331 /* Counting number of interfaces is needed for legacy PM */ 1332 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1333 mvm->vif_count++; 1334 1335 /* 1336 * The AP binding flow can be done only after the beacon 1337 * template is configured (which happens only in the mac80211 1338 * start_ap() flow), and adding the broadcast station can happen 1339 * only after the binding. 1340 * In addition, since modifying the MAC before adding a bcast 1341 * station is not allowed by the FW, delay the adding of MAC context to 1342 * the point where we can also add the bcast station. 1343 * In short: there's not much we can do at this point, other than 1344 * allocating resources :) 1345 */ 1346 if (vif->type == NL80211_IFTYPE_AP || 1347 vif->type == NL80211_IFTYPE_ADHOC) { 1348 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1349 if (ret) { 1350 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1351 goto out_release; 1352 } 1353 1354 iwl_mvm_vif_dbgfs_register(mvm, vif); 1355 goto out_unlock; 1356 } 1357 1358 mvmvif->features |= hw->netdev_features; 1359 1360 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1361 if (ret) 1362 goto out_release; 1363 1364 ret = iwl_mvm_power_update_mac(mvm); 1365 if (ret) 1366 goto out_remove_mac; 1367 1368 /* beacon filtering */ 1369 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1370 if (ret) 1371 goto out_remove_mac; 1372 1373 if (!mvm->bf_allowed_vif && 1374 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1375 mvm->bf_allowed_vif = mvmvif; 1376 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1377 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1378 } 1379 1380 /* 1381 * P2P_DEVICE interface does not have a channel context assigned to it, 1382 * so a dedicated PHY context is allocated to it and the corresponding 1383 * MAC context is bound to it at this stage. 1384 */ 1385 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1386 1387 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1388 if (!mvmvif->phy_ctxt) { 1389 ret = -ENOSPC; 1390 goto out_free_bf; 1391 } 1392 1393 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1394 ret = iwl_mvm_binding_add_vif(mvm, vif); 1395 if (ret) 1396 goto out_unref_phy; 1397 1398 ret = iwl_mvm_add_bcast_sta(mvm, vif); 1399 if (ret) 1400 goto out_unbind; 1401 1402 /* Save a pointer to p2p device vif, so it can later be used to 1403 * update the p2p device MAC when a GO is started/stopped */ 1404 mvm->p2p_device_vif = vif; 1405 } 1406 1407 iwl_mvm_vif_dbgfs_register(mvm, vif); 1408 goto out_unlock; 1409 1410 out_unbind: 1411 iwl_mvm_binding_remove_vif(mvm, vif); 1412 out_unref_phy: 1413 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1414 out_free_bf: 1415 if (mvm->bf_allowed_vif == mvmvif) { 1416 mvm->bf_allowed_vif = NULL; 1417 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1418 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1419 } 1420 out_remove_mac: 1421 mvmvif->phy_ctxt = NULL; 1422 iwl_mvm_mac_ctxt_remove(mvm, vif); 1423 out_release: 1424 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1425 mvm->vif_count--; 1426 1427 iwl_mvm_mac_ctxt_release(mvm, vif); 1428 out_unlock: 1429 mutex_unlock(&mvm->mutex); 1430 1431 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1432 1433 return ret; 1434 } 1435 1436 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1437 struct ieee80211_vif *vif) 1438 { 1439 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif); 1440 1441 if (tfd_msk) { 1442 /* 1443 * mac80211 first removes all the stations of the vif and 1444 * then removes the vif. When it removes a station it also 1445 * flushes the AMPDU session. So by now, all the AMPDU sessions 1446 * of all the stations of this vif are closed, and the queues 1447 * of these AMPDU sessions are properly closed. 1448 * We still need to take care of the shared queues of the vif. 1449 * Flush them here. 1450 */ 1451 mutex_lock(&mvm->mutex); 1452 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0); 1453 mutex_unlock(&mvm->mutex); 1454 1455 /* 1456 * There are transports that buffer a few frames in the host. 1457 * For these, the flush above isn't enough since while we were 1458 * flushing, the transport might have sent more frames to the 1459 * device. To solve this, wait here until the transport is 1460 * empty. Technically, this could have replaced the flush 1461 * above, but flush is much faster than draining. So flush 1462 * first, and drain to make sure we have no frames in the 1463 * transport anymore. 1464 * If a station still had frames on the shared queues, it is 1465 * already marked as draining, so to complete the draining, we 1466 * just need to wait until the transport is empty. 1467 */ 1468 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk); 1469 } 1470 1471 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1472 /* 1473 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1474 * We assume here that all the packets sent to the OFFCHANNEL 1475 * queue are sent in ROC session. 1476 */ 1477 flush_work(&mvm->roc_done_wk); 1478 } else { 1479 /* 1480 * By now, all the AC queues are empty. The AGG queues are 1481 * empty too. We already got all the Tx responses for all the 1482 * packets in the queues. The drain work can have been 1483 * triggered. Flush it. 1484 */ 1485 flush_work(&mvm->sta_drained_wk); 1486 } 1487 } 1488 1489 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1490 struct ieee80211_vif *vif) 1491 { 1492 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1493 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1494 1495 iwl_mvm_prepare_mac_removal(mvm, vif); 1496 1497 mutex_lock(&mvm->mutex); 1498 1499 if (mvm->bf_allowed_vif == mvmvif) { 1500 mvm->bf_allowed_vif = NULL; 1501 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1502 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1503 } 1504 1505 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1506 1507 /* 1508 * For AP/GO interface, the tear down of the resources allocated to the 1509 * interface is be handled as part of the stop_ap flow. 1510 */ 1511 if (vif->type == NL80211_IFTYPE_AP || 1512 vif->type == NL80211_IFTYPE_ADHOC) { 1513 #ifdef CONFIG_NL80211_TESTMODE 1514 if (vif == mvm->noa_vif) { 1515 mvm->noa_vif = NULL; 1516 mvm->noa_duration = 0; 1517 } 1518 #endif 1519 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1520 goto out_release; 1521 } 1522 1523 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1524 mvm->p2p_device_vif = NULL; 1525 iwl_mvm_rm_bcast_sta(mvm, vif); 1526 iwl_mvm_binding_remove_vif(mvm, vif); 1527 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1528 mvmvif->phy_ctxt = NULL; 1529 } 1530 1531 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1532 mvm->vif_count--; 1533 1534 iwl_mvm_power_update_mac(mvm); 1535 iwl_mvm_mac_ctxt_remove(mvm, vif); 1536 1537 out_release: 1538 iwl_mvm_mac_ctxt_release(mvm, vif); 1539 mutex_unlock(&mvm->mutex); 1540 } 1541 1542 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1543 { 1544 return 0; 1545 } 1546 1547 struct iwl_mvm_mc_iter_data { 1548 struct iwl_mvm *mvm; 1549 int port_id; 1550 }; 1551 1552 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1553 struct ieee80211_vif *vif) 1554 { 1555 struct iwl_mvm_mc_iter_data *data = _data; 1556 struct iwl_mvm *mvm = data->mvm; 1557 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1558 int ret, len; 1559 1560 /* if we don't have free ports, mcast frames will be dropped */ 1561 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1562 return; 1563 1564 if (vif->type != NL80211_IFTYPE_STATION || 1565 !vif->bss_conf.assoc) 1566 return; 1567 1568 cmd->port_id = data->port_id++; 1569 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1570 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1571 1572 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd); 1573 if (ret) 1574 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1575 } 1576 1577 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1578 { 1579 struct iwl_mvm_mc_iter_data iter_data = { 1580 .mvm = mvm, 1581 }; 1582 1583 lockdep_assert_held(&mvm->mutex); 1584 1585 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1586 return; 1587 1588 ieee80211_iterate_active_interfaces_atomic( 1589 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1590 iwl_mvm_mc_iface_iterator, &iter_data); 1591 } 1592 1593 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1594 struct netdev_hw_addr_list *mc_list) 1595 { 1596 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1597 struct iwl_mcast_filter_cmd *cmd; 1598 struct netdev_hw_addr *addr; 1599 int addr_count; 1600 bool pass_all; 1601 int len; 1602 1603 addr_count = netdev_hw_addr_list_count(mc_list); 1604 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1605 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1606 if (pass_all) 1607 addr_count = 0; 1608 1609 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1610 cmd = kzalloc(len, GFP_ATOMIC); 1611 if (!cmd) 1612 return 0; 1613 1614 if (pass_all) { 1615 cmd->pass_all = 1; 1616 return (u64)(unsigned long)cmd; 1617 } 1618 1619 netdev_hw_addr_list_for_each(addr, mc_list) { 1620 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1621 cmd->count, addr->addr); 1622 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1623 addr->addr, ETH_ALEN); 1624 cmd->count++; 1625 } 1626 1627 return (u64)(unsigned long)cmd; 1628 } 1629 1630 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1631 unsigned int changed_flags, 1632 unsigned int *total_flags, 1633 u64 multicast) 1634 { 1635 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1636 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1637 1638 mutex_lock(&mvm->mutex); 1639 1640 /* replace previous configuration */ 1641 kfree(mvm->mcast_filter_cmd); 1642 mvm->mcast_filter_cmd = cmd; 1643 1644 if (!cmd) 1645 goto out; 1646 1647 iwl_mvm_recalc_multicast(mvm); 1648 out: 1649 mutex_unlock(&mvm->mutex); 1650 *total_flags = 0; 1651 } 1652 1653 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1654 struct ieee80211_vif *vif, 1655 unsigned int filter_flags, 1656 unsigned int changed_flags) 1657 { 1658 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1659 1660 /* We support only filter for probe requests */ 1661 if (!(changed_flags & FIF_PROBE_REQ)) 1662 return; 1663 1664 /* Supported only for p2p client interfaces */ 1665 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1666 !vif->p2p) 1667 return; 1668 1669 mutex_lock(&mvm->mutex); 1670 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1671 mutex_unlock(&mvm->mutex); 1672 } 1673 1674 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1675 struct iwl_bcast_iter_data { 1676 struct iwl_mvm *mvm; 1677 struct iwl_bcast_filter_cmd *cmd; 1678 u8 current_filter; 1679 }; 1680 1681 static void 1682 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1683 const struct iwl_fw_bcast_filter *in_filter, 1684 struct iwl_fw_bcast_filter *out_filter) 1685 { 1686 struct iwl_fw_bcast_filter_attr *attr; 1687 int i; 1688 1689 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1690 1691 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1692 attr = &out_filter->attrs[i]; 1693 1694 if (!attr->mask) 1695 break; 1696 1697 switch (attr->reserved1) { 1698 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1699 if (vif->bss_conf.arp_addr_cnt != 1) { 1700 attr->mask = 0; 1701 continue; 1702 } 1703 1704 attr->val = vif->bss_conf.arp_addr_list[0]; 1705 break; 1706 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1707 attr->val = *(__be32 *)&vif->addr[2]; 1708 break; 1709 default: 1710 break; 1711 } 1712 attr->reserved1 = 0; 1713 out_filter->num_attrs++; 1714 } 1715 } 1716 1717 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1718 struct ieee80211_vif *vif) 1719 { 1720 struct iwl_bcast_iter_data *data = _data; 1721 struct iwl_mvm *mvm = data->mvm; 1722 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1723 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1724 struct iwl_fw_bcast_mac *bcast_mac; 1725 int i; 1726 1727 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1728 return; 1729 1730 bcast_mac = &cmd->macs[mvmvif->id]; 1731 1732 /* 1733 * enable filtering only for associated stations, but not for P2P 1734 * Clients 1735 */ 1736 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1737 !vif->bss_conf.assoc) 1738 return; 1739 1740 bcast_mac->default_discard = 1; 1741 1742 /* copy all configured filters */ 1743 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1744 /* 1745 * Make sure we don't exceed our filters limit. 1746 * if there is still a valid filter to be configured, 1747 * be on the safe side and just allow bcast for this mac. 1748 */ 1749 if (WARN_ON_ONCE(data->current_filter >= 1750 ARRAY_SIZE(cmd->filters))) { 1751 bcast_mac->default_discard = 0; 1752 bcast_mac->attached_filters = 0; 1753 break; 1754 } 1755 1756 iwl_mvm_set_bcast_filter(vif, 1757 &mvm->bcast_filters[i], 1758 &cmd->filters[data->current_filter]); 1759 1760 /* skip current filter if it contains no attributes */ 1761 if (!cmd->filters[data->current_filter].num_attrs) 1762 continue; 1763 1764 /* attach the filter to current mac */ 1765 bcast_mac->attached_filters |= 1766 cpu_to_le16(BIT(data->current_filter)); 1767 1768 data->current_filter++; 1769 } 1770 } 1771 1772 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1773 struct iwl_bcast_filter_cmd *cmd) 1774 { 1775 struct iwl_bcast_iter_data iter_data = { 1776 .mvm = mvm, 1777 .cmd = cmd, 1778 }; 1779 1780 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1781 return false; 1782 1783 memset(cmd, 0, sizeof(*cmd)); 1784 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1785 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1786 1787 #ifdef CONFIG_IWLWIFI_DEBUGFS 1788 /* use debugfs filters/macs if override is configured */ 1789 if (mvm->dbgfs_bcast_filtering.override) { 1790 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1791 sizeof(cmd->filters)); 1792 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1793 sizeof(cmd->macs)); 1794 return true; 1795 } 1796 #endif 1797 1798 /* if no filters are configured, do nothing */ 1799 if (!mvm->bcast_filters) 1800 return false; 1801 1802 /* configure and attach these filters for each associated sta vif */ 1803 ieee80211_iterate_active_interfaces( 1804 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1805 iwl_mvm_bcast_filter_iterator, &iter_data); 1806 1807 return true; 1808 } 1809 1810 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1811 { 1812 struct iwl_bcast_filter_cmd cmd; 1813 1814 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1815 return 0; 1816 1817 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1818 return 0; 1819 1820 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1821 sizeof(cmd), &cmd); 1822 } 1823 #else 1824 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1825 { 1826 return 0; 1827 } 1828 #endif 1829 1830 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1831 struct ieee80211_vif *vif) 1832 { 1833 struct iwl_mu_group_mgmt_cmd cmd = {}; 1834 1835 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1836 WLAN_MEMBERSHIP_LEN); 1837 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1838 WLAN_USER_POSITION_LEN); 1839 1840 return iwl_mvm_send_cmd_pdu(mvm, 1841 WIDE_ID(DATA_PATH_GROUP, 1842 UPDATE_MU_GROUPS_CMD), 1843 0, sizeof(cmd), &cmd); 1844 } 1845 1846 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1847 struct ieee80211_vif *vif) 1848 { 1849 if (vif->mu_mimo_owner) { 1850 struct iwl_mu_group_mgmt_notif *notif = _data; 1851 1852 /* 1853 * MU-MIMO Group Id action frame is little endian. We treat 1854 * the data received from firmware as if it came from the 1855 * action frame, so no conversion is needed. 1856 */ 1857 ieee80211_update_mu_groups(vif, 1858 (u8 *)¬if->membership_status, 1859 (u8 *)¬if->user_position); 1860 } 1861 } 1862 1863 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1864 struct iwl_rx_cmd_buffer *rxb) 1865 { 1866 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1867 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1868 1869 ieee80211_iterate_active_interfaces_atomic( 1870 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1871 iwl_mvm_mu_mimo_iface_iterator, notif); 1872 } 1873 1874 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 1875 struct ieee80211_vif *vif, 1876 struct ieee80211_bss_conf *bss_conf, 1877 u32 changes) 1878 { 1879 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1880 int ret; 1881 1882 /* 1883 * Re-calculate the tsf id, as the master-slave relations depend on the 1884 * beacon interval, which was not known when the station interface was 1885 * added. 1886 */ 1887 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) 1888 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 1889 1890 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc && 1891 mvmvif->lqm_active) 1892 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT, 1893 0, 0); 1894 1895 /* 1896 * If we're not associated yet, take the (new) BSSID before associating 1897 * so the firmware knows. If we're already associated, then use the old 1898 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 1899 * branch for disassociation below. 1900 */ 1901 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 1902 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1903 1904 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 1905 if (ret) 1906 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 1907 1908 /* after sending it once, adopt mac80211 data */ 1909 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1910 mvmvif->associated = bss_conf->assoc; 1911 1912 if (changes & BSS_CHANGED_ASSOC) { 1913 if (bss_conf->assoc) { 1914 /* clear statistics to get clean beacon counter */ 1915 iwl_mvm_request_statistics(mvm, true); 1916 memset(&mvmvif->beacon_stats, 0, 1917 sizeof(mvmvif->beacon_stats)); 1918 1919 /* add quota for this interface */ 1920 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1921 if (ret) { 1922 IWL_ERR(mvm, "failed to update quotas\n"); 1923 return; 1924 } 1925 1926 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1927 &mvm->status)) { 1928 /* 1929 * If we're restarting then the firmware will 1930 * obviously have lost synchronisation with 1931 * the AP. It will attempt to synchronise by 1932 * itself, but we can make it more reliable by 1933 * scheduling a session protection time event. 1934 * 1935 * The firmware needs to receive a beacon to 1936 * catch up with synchronisation, use 110% of 1937 * the beacon interval. 1938 * 1939 * Set a large maximum delay to allow for more 1940 * than a single interface. 1941 */ 1942 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 1943 iwl_mvm_protect_session(mvm, vif, dur, dur, 1944 5 * dur, false); 1945 } 1946 1947 iwl_mvm_sf_update(mvm, vif, false); 1948 iwl_mvm_power_vif_assoc(mvm, vif); 1949 if (vif->p2p) { 1950 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 1951 iwl_mvm_update_smps(mvm, vif, 1952 IWL_MVM_SMPS_REQ_PROT, 1953 IEEE80211_SMPS_DYNAMIC); 1954 } 1955 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { 1956 /* 1957 * If update fails - SF might be running in associated 1958 * mode while disassociated - which is forbidden. 1959 */ 1960 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 1961 "Failed to update SF upon disassociation\n"); 1962 1963 /* remove AP station now that the MAC is unassoc */ 1964 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id); 1965 if (ret) 1966 IWL_ERR(mvm, "failed to remove AP station\n"); 1967 1968 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 1969 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT; 1970 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 1971 /* remove quota for this interface */ 1972 ret = iwl_mvm_update_quotas(mvm, false, NULL); 1973 if (ret) 1974 IWL_ERR(mvm, "failed to update quotas\n"); 1975 1976 if (vif->p2p) 1977 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 1978 1979 /* this will take the cleared BSSID from bss_conf */ 1980 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1981 if (ret) 1982 IWL_ERR(mvm, 1983 "failed to update MAC %pM (clear after unassoc)\n", 1984 vif->addr); 1985 } 1986 1987 /* 1988 * The firmware tracks the MU-MIMO group on its own. 1989 * However, on HW restart we should restore this data. 1990 */ 1991 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 1992 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 1993 ret = iwl_mvm_update_mu_groups(mvm, vif); 1994 if (ret) 1995 IWL_ERR(mvm, 1996 "failed to update VHT MU_MIMO groups\n"); 1997 } 1998 1999 iwl_mvm_recalc_multicast(mvm); 2000 iwl_mvm_configure_bcast_filter(mvm); 2001 2002 /* reset rssi values */ 2003 mvmvif->bf_data.ave_beacon_signal = 0; 2004 2005 iwl_mvm_bt_coex_vif_change(mvm); 2006 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2007 IEEE80211_SMPS_AUTOMATIC); 2008 if (fw_has_capa(&mvm->fw->ucode_capa, 2009 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2010 iwl_mvm_config_scan(mvm); 2011 } 2012 2013 if (changes & BSS_CHANGED_BEACON_INFO) { 2014 /* 2015 * We received a beacon from the associated AP so 2016 * remove the session protection. 2017 */ 2018 iwl_mvm_remove_time_event(mvm, mvmvif, 2019 &mvmvif->time_event_data); 2020 2021 iwl_mvm_sf_update(mvm, vif, false); 2022 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2023 } 2024 2025 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2026 /* 2027 * Send power command on every beacon change, 2028 * because we may have not enabled beacon abort yet. 2029 */ 2030 BSS_CHANGED_BEACON_INFO)) { 2031 ret = iwl_mvm_power_update_mac(mvm); 2032 if (ret) 2033 IWL_ERR(mvm, "failed to update power mode\n"); 2034 } 2035 2036 if (changes & BSS_CHANGED_TXPOWER) { 2037 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2038 bss_conf->txpower); 2039 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2040 } 2041 2042 if (changes & BSS_CHANGED_CQM) { 2043 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2044 /* reset cqm events tracking */ 2045 mvmvif->bf_data.last_cqm_event = 0; 2046 if (mvmvif->bf_data.bf_enabled) { 2047 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2048 if (ret) 2049 IWL_ERR(mvm, 2050 "failed to update CQM thresholds\n"); 2051 } 2052 } 2053 2054 if (changes & BSS_CHANGED_ARP_FILTER) { 2055 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2056 iwl_mvm_configure_bcast_filter(mvm); 2057 } 2058 } 2059 2060 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2061 struct ieee80211_vif *vif) 2062 { 2063 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2064 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2065 int ret; 2066 2067 /* 2068 * iwl_mvm_mac_ctxt_add() might read directly from the device 2069 * (the system time), so make sure it is available. 2070 */ 2071 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2072 if (ret) 2073 return ret; 2074 2075 mutex_lock(&mvm->mutex); 2076 2077 /* Send the beacon template */ 2078 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2079 if (ret) 2080 goto out_unlock; 2081 2082 /* 2083 * Re-calculate the tsf id, as the master-slave relations depend on the 2084 * beacon interval, which was not known when the AP interface was added. 2085 */ 2086 if (vif->type == NL80211_IFTYPE_AP) 2087 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2088 2089 mvmvif->ap_assoc_sta_count = 0; 2090 2091 /* Add the mac context */ 2092 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2093 if (ret) 2094 goto out_unlock; 2095 2096 /* Perform the binding */ 2097 ret = iwl_mvm_binding_add_vif(mvm, vif); 2098 if (ret) 2099 goto out_remove; 2100 2101 /* Send the bcast station. At this stage the TBTT and DTIM time events 2102 * are added and applied to the scheduler */ 2103 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2104 if (ret) 2105 goto out_unbind; 2106 2107 /* must be set before quota calculations */ 2108 mvmvif->ap_ibss_active = true; 2109 2110 /* power updated needs to be done before quotas */ 2111 iwl_mvm_power_update_mac(mvm); 2112 2113 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2114 if (ret) 2115 goto out_quota_failed; 2116 2117 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2118 if (vif->p2p && mvm->p2p_device_vif) 2119 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2120 2121 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2122 2123 iwl_mvm_bt_coex_vif_change(mvm); 2124 2125 /* we don't support TDLS during DCM */ 2126 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2127 iwl_mvm_teardown_tdls_peers(mvm); 2128 2129 goto out_unlock; 2130 2131 out_quota_failed: 2132 iwl_mvm_power_update_mac(mvm); 2133 mvmvif->ap_ibss_active = false; 2134 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2135 out_unbind: 2136 iwl_mvm_binding_remove_vif(mvm, vif); 2137 out_remove: 2138 iwl_mvm_mac_ctxt_remove(mvm, vif); 2139 out_unlock: 2140 mutex_unlock(&mvm->mutex); 2141 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2142 return ret; 2143 } 2144 2145 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2146 struct ieee80211_vif *vif) 2147 { 2148 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2149 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2150 2151 iwl_mvm_prepare_mac_removal(mvm, vif); 2152 2153 mutex_lock(&mvm->mutex); 2154 2155 /* Handle AP stop while in CSA */ 2156 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2157 iwl_mvm_remove_time_event(mvm, mvmvif, 2158 &mvmvif->time_event_data); 2159 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2160 mvmvif->csa_countdown = false; 2161 } 2162 2163 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2164 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2165 mvm->csa_tx_block_bcn_timeout = 0; 2166 } 2167 2168 mvmvif->ap_ibss_active = false; 2169 mvm->ap_last_beacon_gp2 = 0; 2170 2171 iwl_mvm_bt_coex_vif_change(mvm); 2172 2173 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2174 2175 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2176 if (vif->p2p && mvm->p2p_device_vif) 2177 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2178 2179 iwl_mvm_update_quotas(mvm, false, NULL); 2180 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2181 iwl_mvm_binding_remove_vif(mvm, vif); 2182 2183 iwl_mvm_power_update_mac(mvm); 2184 2185 iwl_mvm_mac_ctxt_remove(mvm, vif); 2186 2187 mutex_unlock(&mvm->mutex); 2188 } 2189 2190 static void 2191 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2192 struct ieee80211_vif *vif, 2193 struct ieee80211_bss_conf *bss_conf, 2194 u32 changes) 2195 { 2196 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2197 2198 /* Changes will be applied when the AP/IBSS is started */ 2199 if (!mvmvif->ap_ibss_active) 2200 return; 2201 2202 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2203 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2204 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2205 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2206 2207 /* Need to send a new beacon template to the FW */ 2208 if (changes & BSS_CHANGED_BEACON && 2209 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2210 IWL_WARN(mvm, "Failed updating beacon data\n"); 2211 2212 if (changes & BSS_CHANGED_TXPOWER) { 2213 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2214 bss_conf->txpower); 2215 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2216 } 2217 } 2218 2219 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2220 struct ieee80211_vif *vif, 2221 struct ieee80211_bss_conf *bss_conf, 2222 u32 changes) 2223 { 2224 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2225 2226 /* 2227 * iwl_mvm_bss_info_changed_station() might call 2228 * iwl_mvm_protect_session(), which reads directly from 2229 * the device (the system time), so make sure it is available. 2230 */ 2231 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2232 return; 2233 2234 mutex_lock(&mvm->mutex); 2235 2236 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2237 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2238 2239 switch (vif->type) { 2240 case NL80211_IFTYPE_STATION: 2241 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2242 break; 2243 case NL80211_IFTYPE_AP: 2244 case NL80211_IFTYPE_ADHOC: 2245 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2246 break; 2247 case NL80211_IFTYPE_MONITOR: 2248 if (changes & BSS_CHANGED_MU_GROUPS) 2249 iwl_mvm_update_mu_groups(mvm, vif); 2250 break; 2251 default: 2252 /* shouldn't happen */ 2253 WARN_ON_ONCE(1); 2254 } 2255 2256 mutex_unlock(&mvm->mutex); 2257 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2258 } 2259 2260 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2261 struct ieee80211_vif *vif, 2262 struct ieee80211_scan_request *hw_req) 2263 { 2264 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2265 int ret; 2266 2267 if (hw_req->req.n_channels == 0 || 2268 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2269 return -EINVAL; 2270 2271 mutex_lock(&mvm->mutex); 2272 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2273 mutex_unlock(&mvm->mutex); 2274 2275 return ret; 2276 } 2277 2278 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2279 struct ieee80211_vif *vif) 2280 { 2281 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2282 2283 mutex_lock(&mvm->mutex); 2284 2285 /* Due to a race condition, it's possible that mac80211 asks 2286 * us to stop a hw_scan when it's already stopped. This can 2287 * happen, for instance, if we stopped the scan ourselves, 2288 * called ieee80211_scan_completed() and the userspace called 2289 * cancel scan scan before ieee80211_scan_work() could run. 2290 * To handle that, simply return if the scan is not running. 2291 */ 2292 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2293 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2294 2295 mutex_unlock(&mvm->mutex); 2296 } 2297 2298 static void 2299 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2300 struct ieee80211_sta *sta, u16 tids, 2301 int num_frames, 2302 enum ieee80211_frame_release_type reason, 2303 bool more_data) 2304 { 2305 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2306 2307 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2308 2309 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2310 tids, more_data, false); 2311 } 2312 2313 static void 2314 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2315 struct ieee80211_sta *sta, u16 tids, 2316 int num_frames, 2317 enum ieee80211_frame_release_type reason, 2318 bool more_data) 2319 { 2320 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2321 2322 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2323 2324 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2325 tids, more_data, true); 2326 } 2327 2328 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2329 enum sta_notify_cmd cmd, 2330 struct ieee80211_sta *sta) 2331 { 2332 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2333 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2334 unsigned long txqs = 0, tids = 0; 2335 int tid; 2336 2337 spin_lock_bh(&mvmsta->lock); 2338 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2339 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2340 2341 if (!iwl_mvm_is_dqa_supported(mvm) && 2342 tid_data->state != IWL_AGG_ON && 2343 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA) 2344 continue; 2345 2346 __set_bit(tid_data->txq_id, &txqs); 2347 2348 if (iwl_mvm_tid_queued(tid_data) == 0) 2349 continue; 2350 2351 __set_bit(tid, &tids); 2352 } 2353 2354 switch (cmd) { 2355 case STA_NOTIFY_SLEEP: 2356 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0) 2357 ieee80211_sta_block_awake(hw, sta, true); 2358 2359 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2360 ieee80211_sta_set_buffered(sta, tid, true); 2361 2362 if (txqs) 2363 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2364 /* 2365 * The fw updates the STA to be asleep. Tx packets on the Tx 2366 * queues to this station will not be transmitted. The fw will 2367 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2368 */ 2369 break; 2370 case STA_NOTIFY_AWAKE: 2371 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) 2372 break; 2373 2374 if (txqs) 2375 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2376 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2377 break; 2378 default: 2379 break; 2380 } 2381 spin_unlock_bh(&mvmsta->lock); 2382 } 2383 2384 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2385 struct ieee80211_vif *vif, 2386 enum sta_notify_cmd cmd, 2387 struct ieee80211_sta *sta) 2388 { 2389 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2390 } 2391 2392 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2393 { 2394 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2395 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2396 struct ieee80211_sta *sta; 2397 struct iwl_mvm_sta *mvmsta; 2398 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2399 2400 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2401 return; 2402 2403 rcu_read_lock(); 2404 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2405 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2406 rcu_read_unlock(); 2407 return; 2408 } 2409 2410 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2411 2412 if (!mvmsta->vif || 2413 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2414 rcu_read_unlock(); 2415 return; 2416 } 2417 2418 if (mvmsta->sleeping != sleeping) { 2419 mvmsta->sleeping = sleeping; 2420 __iwl_mvm_mac_sta_notify(mvm->hw, 2421 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2422 sta); 2423 ieee80211_sta_ps_transition(sta, sleeping); 2424 } 2425 2426 if (sleeping) { 2427 switch (notif->type) { 2428 case IWL_MVM_PM_EVENT_AWAKE: 2429 case IWL_MVM_PM_EVENT_ASLEEP: 2430 break; 2431 case IWL_MVM_PM_EVENT_UAPSD: 2432 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2433 break; 2434 case IWL_MVM_PM_EVENT_PS_POLL: 2435 ieee80211_sta_pspoll(sta); 2436 break; 2437 default: 2438 break; 2439 } 2440 } 2441 2442 rcu_read_unlock(); 2443 } 2444 2445 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2446 struct ieee80211_vif *vif, 2447 struct ieee80211_sta *sta) 2448 { 2449 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2450 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2451 2452 /* 2453 * This is called before mac80211 does RCU synchronisation, 2454 * so here we already invalidate our internal RCU-protected 2455 * station pointer. The rest of the code will thus no longer 2456 * be able to find the station this way, and we don't rely 2457 * on further RCU synchronisation after the sta_state() 2458 * callback deleted the station. 2459 */ 2460 mutex_lock(&mvm->mutex); 2461 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2462 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2463 ERR_PTR(-ENOENT)); 2464 2465 mutex_unlock(&mvm->mutex); 2466 } 2467 2468 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2469 const u8 *bssid) 2470 { 2471 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2472 return; 2473 2474 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2475 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2476 return; 2477 } 2478 2479 if (!vif->p2p && 2480 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2481 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2482 return; 2483 } 2484 2485 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2486 } 2487 2488 static void 2489 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2490 struct ieee80211_vif *vif, u8 *peer_addr, 2491 enum nl80211_tdls_operation action) 2492 { 2493 struct iwl_fw_dbg_trigger_tlv *trig; 2494 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2495 2496 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) 2497 return; 2498 2499 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); 2500 tdls_trig = (void *)trig->data; 2501 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 2502 return; 2503 2504 if (!(tdls_trig->action_bitmap & BIT(action))) 2505 return; 2506 2507 if (tdls_trig->peer_mode && 2508 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2509 return; 2510 2511 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 2512 "TDLS event occurred, peer %pM, action %d", 2513 peer_addr, action); 2514 } 2515 2516 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2517 struct iwl_mvm_sta *mvm_sta) 2518 { 2519 struct iwl_mvm_tid_data *tid_data; 2520 struct sk_buff *skb; 2521 int i; 2522 2523 spin_lock_bh(&mvm_sta->lock); 2524 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2525 tid_data = &mvm_sta->tid_data[i]; 2526 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) 2527 ieee80211_free_txskb(mvm->hw, skb); 2528 } 2529 spin_unlock_bh(&mvm_sta->lock); 2530 } 2531 2532 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2533 struct ieee80211_vif *vif, 2534 struct ieee80211_sta *sta, 2535 enum ieee80211_sta_state old_state, 2536 enum ieee80211_sta_state new_state) 2537 { 2538 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2539 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2540 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2541 int ret; 2542 2543 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2544 sta->addr, old_state, new_state); 2545 2546 /* this would be a mac80211 bug ... but don't crash */ 2547 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2548 return -EINVAL; 2549 2550 /* if a STA is being removed, reuse its ID */ 2551 flush_work(&mvm->sta_drained_wk); 2552 2553 /* 2554 * If we are in a STA removal flow and in DQA mode: 2555 * 2556 * This is after the sync_rcu part, so the queues have already been 2557 * flushed. No more TXs on their way in mac80211's path, and no more in 2558 * the queues. 2559 * Also, we won't be getting any new TX frames for this station. 2560 * What we might have are deferred TX frames that need to be taken care 2561 * of. 2562 * 2563 * Drop any still-queued deferred-frame before removing the STA, and 2564 * make sure the worker is no longer handling frames for this STA. 2565 */ 2566 if (old_state == IEEE80211_STA_NONE && 2567 new_state == IEEE80211_STA_NOTEXIST && 2568 iwl_mvm_is_dqa_supported(mvm)) { 2569 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2570 flush_work(&mvm->add_stream_wk); 2571 2572 /* 2573 * No need to make sure deferred TX indication is off since the 2574 * worker will already remove it if it was on 2575 */ 2576 } 2577 2578 mutex_lock(&mvm->mutex); 2579 /* track whether or not the station is associated */ 2580 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC; 2581 2582 if (old_state == IEEE80211_STA_NOTEXIST && 2583 new_state == IEEE80211_STA_NONE) { 2584 /* 2585 * Firmware bug - it'll crash if the beacon interval is less 2586 * than 16. We can't avoid connecting at all, so refuse the 2587 * station state change, this will cause mac80211 to abandon 2588 * attempts to connect to this AP, and eventually wpa_s will 2589 * blacklist the AP... 2590 */ 2591 if (vif->type == NL80211_IFTYPE_STATION && 2592 vif->bss_conf.beacon_int < 16) { 2593 IWL_ERR(mvm, 2594 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2595 sta->addr, vif->bss_conf.beacon_int); 2596 ret = -EINVAL; 2597 goto out_unlock; 2598 } 2599 2600 if (sta->tdls && 2601 (vif->p2p || 2602 iwl_mvm_tdls_sta_count(mvm, NULL) == 2603 IWL_MVM_TDLS_STA_COUNT || 2604 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2605 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2606 ret = -EBUSY; 2607 goto out_unlock; 2608 } 2609 2610 ret = iwl_mvm_add_sta(mvm, vif, sta); 2611 if (sta->tdls && ret == 0) { 2612 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2613 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2614 NL80211_TDLS_SETUP); 2615 } 2616 } else if (old_state == IEEE80211_STA_NONE && 2617 new_state == IEEE80211_STA_AUTH) { 2618 /* 2619 * EBS may be disabled due to previous failures reported by FW. 2620 * Reset EBS status here assuming environment has been changed. 2621 */ 2622 mvm->last_ebs_successful = true; 2623 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2624 ret = 0; 2625 } else if (old_state == IEEE80211_STA_AUTH && 2626 new_state == IEEE80211_STA_ASSOC) { 2627 if (vif->type == NL80211_IFTYPE_AP) { 2628 mvmvif->ap_assoc_sta_count++; 2629 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2630 } 2631 2632 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2633 true); 2634 ret = iwl_mvm_update_sta(mvm, vif, sta); 2635 } else if (old_state == IEEE80211_STA_ASSOC && 2636 new_state == IEEE80211_STA_AUTHORIZED) { 2637 2638 /* we don't support TDLS during DCM */ 2639 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2640 iwl_mvm_teardown_tdls_peers(mvm); 2641 2642 if (sta->tdls) 2643 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2644 NL80211_TDLS_ENABLE_LINK); 2645 2646 /* enable beacon filtering */ 2647 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2648 ret = 0; 2649 } else if (old_state == IEEE80211_STA_AUTHORIZED && 2650 new_state == IEEE80211_STA_ASSOC) { 2651 /* disable beacon filtering */ 2652 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 2653 ret = 0; 2654 } else if (old_state == IEEE80211_STA_ASSOC && 2655 new_state == IEEE80211_STA_AUTH) { 2656 if (vif->type == NL80211_IFTYPE_AP) { 2657 mvmvif->ap_assoc_sta_count--; 2658 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2659 } 2660 ret = 0; 2661 } else if (old_state == IEEE80211_STA_AUTH && 2662 new_state == IEEE80211_STA_NONE) { 2663 ret = 0; 2664 } else if (old_state == IEEE80211_STA_NONE && 2665 new_state == IEEE80211_STA_NOTEXIST) { 2666 ret = iwl_mvm_rm_sta(mvm, vif, sta); 2667 if (sta->tdls) { 2668 iwl_mvm_recalc_tdls_state(mvm, vif, false); 2669 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2670 NL80211_TDLS_DISABLE_LINK); 2671 } 2672 } else { 2673 ret = -EIO; 2674 } 2675 out_unlock: 2676 mutex_unlock(&mvm->mutex); 2677 2678 if (sta->tdls && ret == 0) { 2679 if (old_state == IEEE80211_STA_NOTEXIST && 2680 new_state == IEEE80211_STA_NONE) 2681 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2682 else if (old_state == IEEE80211_STA_NONE && 2683 new_state == IEEE80211_STA_NOTEXIST) 2684 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2685 } 2686 2687 return ret; 2688 } 2689 2690 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 2691 { 2692 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2693 2694 mvm->rts_threshold = value; 2695 2696 return 0; 2697 } 2698 2699 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 2700 struct ieee80211_vif *vif, 2701 struct ieee80211_sta *sta, u32 changed) 2702 { 2703 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2704 2705 if (vif->type == NL80211_IFTYPE_STATION && 2706 changed & IEEE80211_RC_NSS_CHANGED) 2707 iwl_mvm_sf_update(mvm, vif, false); 2708 } 2709 2710 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 2711 struct ieee80211_vif *vif, u16 ac, 2712 const struct ieee80211_tx_queue_params *params) 2713 { 2714 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2715 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2716 2717 mvmvif->queue_params[ac] = *params; 2718 2719 /* 2720 * No need to update right away, we'll get BSS_CHANGED_QOS 2721 * The exception is P2P_DEVICE interface which needs immediate update. 2722 */ 2723 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2724 int ret; 2725 2726 mutex_lock(&mvm->mutex); 2727 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2728 mutex_unlock(&mvm->mutex); 2729 return ret; 2730 } 2731 return 0; 2732 } 2733 2734 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 2735 struct ieee80211_vif *vif) 2736 { 2737 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2738 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2739 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2740 2741 if (WARN_ON_ONCE(vif->bss_conf.assoc)) 2742 return; 2743 2744 /* 2745 * iwl_mvm_protect_session() reads directly from the device 2746 * (the system time), so make sure it is available. 2747 */ 2748 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 2749 return; 2750 2751 mutex_lock(&mvm->mutex); 2752 /* Try really hard to protect the session and hear a beacon */ 2753 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 2754 mutex_unlock(&mvm->mutex); 2755 2756 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 2757 } 2758 2759 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 2760 struct ieee80211_vif *vif, 2761 struct cfg80211_sched_scan_request *req, 2762 struct ieee80211_scan_ies *ies) 2763 { 2764 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2765 2766 int ret; 2767 2768 mutex_lock(&mvm->mutex); 2769 2770 if (!vif->bss_conf.idle) { 2771 ret = -EBUSY; 2772 goto out; 2773 } 2774 2775 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 2776 2777 out: 2778 mutex_unlock(&mvm->mutex); 2779 return ret; 2780 } 2781 2782 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 2783 struct ieee80211_vif *vif) 2784 { 2785 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2786 int ret; 2787 2788 mutex_lock(&mvm->mutex); 2789 2790 /* Due to a race condition, it's possible that mac80211 asks 2791 * us to stop a sched_scan when it's already stopped. This 2792 * can happen, for instance, if we stopped the scan ourselves, 2793 * called ieee80211_sched_scan_stopped() and the userspace called 2794 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 2795 * could run. To handle this, simply return if the scan is 2796 * not running. 2797 */ 2798 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 2799 mutex_unlock(&mvm->mutex); 2800 return 0; 2801 } 2802 2803 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 2804 mutex_unlock(&mvm->mutex); 2805 iwl_mvm_wait_for_async_handlers(mvm); 2806 2807 return ret; 2808 } 2809 2810 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 2811 enum set_key_cmd cmd, 2812 struct ieee80211_vif *vif, 2813 struct ieee80211_sta *sta, 2814 struct ieee80211_key_conf *key) 2815 { 2816 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2817 struct iwl_mvm_sta *mvmsta; 2818 struct iwl_mvm_key_pn *ptk_pn; 2819 int keyidx = key->keyidx; 2820 int ret; 2821 u8 key_offset; 2822 2823 if (iwlwifi_mod_params.sw_crypto) { 2824 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 2825 return -EOPNOTSUPP; 2826 } 2827 2828 switch (key->cipher) { 2829 case WLAN_CIPHER_SUITE_TKIP: 2830 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 2831 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2832 break; 2833 case WLAN_CIPHER_SUITE_CCMP: 2834 case WLAN_CIPHER_SUITE_GCMP: 2835 case WLAN_CIPHER_SUITE_GCMP_256: 2836 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2837 break; 2838 case WLAN_CIPHER_SUITE_AES_CMAC: 2839 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2840 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2841 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 2842 break; 2843 case WLAN_CIPHER_SUITE_WEP40: 2844 case WLAN_CIPHER_SUITE_WEP104: 2845 /* For non-client mode, only use WEP keys for TX as we probably 2846 * don't have a station yet anyway and would then have to keep 2847 * track of the keys, linking them to each of the clients/peers 2848 * as they appear. For now, don't do that, for performance WEP 2849 * offload doesn't really matter much, but we need it for some 2850 * other offload features in client mode. 2851 */ 2852 if (vif->type != NL80211_IFTYPE_STATION) 2853 return 0; 2854 break; 2855 default: 2856 /* currently FW supports only one optional cipher scheme */ 2857 if (hw->n_cipher_schemes && 2858 hw->cipher_schemes->cipher == key->cipher) 2859 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2860 else 2861 return -EOPNOTSUPP; 2862 } 2863 2864 mutex_lock(&mvm->mutex); 2865 2866 switch (cmd) { 2867 case SET_KEY: 2868 if ((vif->type == NL80211_IFTYPE_ADHOC || 2869 vif->type == NL80211_IFTYPE_AP) && !sta) { 2870 /* 2871 * GTK on AP interface is a TX-only key, return 0; 2872 * on IBSS they're per-station and because we're lazy 2873 * we don't support them for RX, so do the same. 2874 * CMAC/GMAC in AP/IBSS modes must be done in software. 2875 */ 2876 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 2877 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 2878 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 2879 ret = -EOPNOTSUPP; 2880 else 2881 ret = 0; 2882 key->hw_key_idx = STA_KEY_IDX_INVALID; 2883 break; 2884 } 2885 2886 /* During FW restart, in order to restore the state as it was, 2887 * don't try to reprogram keys we previously failed for. 2888 */ 2889 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2890 key->hw_key_idx == STA_KEY_IDX_INVALID) { 2891 IWL_DEBUG_MAC80211(mvm, 2892 "skip invalid idx key programming during restart\n"); 2893 ret = 0; 2894 break; 2895 } 2896 2897 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2898 sta && iwl_mvm_has_new_rx_api(mvm) && 2899 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2900 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2901 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2902 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2903 struct ieee80211_key_seq seq; 2904 int tid, q; 2905 2906 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2907 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 2908 ptk_pn = kzalloc(sizeof(*ptk_pn) + 2909 mvm->trans->num_rx_queues * 2910 sizeof(ptk_pn->q[0]), 2911 GFP_KERNEL); 2912 if (!ptk_pn) { 2913 ret = -ENOMEM; 2914 break; 2915 } 2916 2917 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2918 ieee80211_get_key_rx_seq(key, tid, &seq); 2919 for (q = 0; q < mvm->trans->num_rx_queues; q++) 2920 memcpy(ptk_pn->q[q].pn[tid], 2921 seq.ccmp.pn, 2922 IEEE80211_CCMP_PN_LEN); 2923 } 2924 2925 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 2926 } 2927 2928 /* in HW restart reuse the index, otherwise request a new one */ 2929 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2930 key_offset = key->hw_key_idx; 2931 else 2932 key_offset = STA_KEY_IDX_INVALID; 2933 2934 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 2935 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 2936 if (ret) { 2937 IWL_WARN(mvm, "set key failed\n"); 2938 /* 2939 * can't add key for RX, but we don't need it 2940 * in the device for TX so still return 0 2941 */ 2942 key->hw_key_idx = STA_KEY_IDX_INVALID; 2943 ret = 0; 2944 } 2945 2946 break; 2947 case DISABLE_KEY: 2948 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 2949 ret = 0; 2950 break; 2951 } 2952 2953 if (sta && iwl_mvm_has_new_rx_api(mvm) && 2954 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2955 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2956 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2957 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2958 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2959 ptk_pn = rcu_dereference_protected( 2960 mvmsta->ptk_pn[keyidx], 2961 lockdep_is_held(&mvm->mutex)); 2962 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 2963 if (ptk_pn) 2964 kfree_rcu(ptk_pn, rcu_head); 2965 } 2966 2967 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 2968 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 2969 break; 2970 default: 2971 ret = -EINVAL; 2972 } 2973 2974 mutex_unlock(&mvm->mutex); 2975 return ret; 2976 } 2977 2978 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 2979 struct ieee80211_vif *vif, 2980 struct ieee80211_key_conf *keyconf, 2981 struct ieee80211_sta *sta, 2982 u32 iv32, u16 *phase1key) 2983 { 2984 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2985 2986 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 2987 return; 2988 2989 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 2990 } 2991 2992 2993 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 2994 struct iwl_rx_packet *pkt, void *data) 2995 { 2996 struct iwl_mvm *mvm = 2997 container_of(notif_wait, struct iwl_mvm, notif_wait); 2998 struct iwl_hs20_roc_res *resp; 2999 int resp_len = iwl_rx_packet_payload_len(pkt); 3000 struct iwl_mvm_time_event_data *te_data = data; 3001 3002 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3003 return true; 3004 3005 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3006 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3007 return true; 3008 } 3009 3010 resp = (void *)pkt->data; 3011 3012 IWL_DEBUG_TE(mvm, 3013 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 3014 resp->status, resp->event_unique_id); 3015 3016 te_data->uid = le32_to_cpu(resp->event_unique_id); 3017 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3018 te_data->uid); 3019 3020 spin_lock_bh(&mvm->time_event_lock); 3021 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3022 spin_unlock_bh(&mvm->time_event_lock); 3023 3024 return true; 3025 } 3026 3027 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3028 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3029 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3030 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3031 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3032 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3033 struct ieee80211_channel *channel, 3034 struct ieee80211_vif *vif, 3035 int duration) 3036 { 3037 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3038 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3039 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3040 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3041 struct iwl_notification_wait wait_time_event; 3042 u32 dtim_interval = vif->bss_conf.dtim_period * 3043 vif->bss_conf.beacon_int; 3044 u32 req_dur, delay; 3045 struct iwl_hs20_roc_req aux_roc_req = { 3046 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3047 .id_and_color = 3048 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3049 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3050 /* Set the channel info data */ 3051 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3052 PHY_BAND_24 : PHY_BAND_5, 3053 .channel_info.channel = channel->hw_value, 3054 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3055 /* Set the time and duration */ 3056 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3057 }; 3058 3059 delay = AUX_ROC_MIN_DELAY; 3060 req_dur = MSEC_TO_TU(duration); 3061 3062 /* 3063 * If we are associated we want the delay time to be at least one 3064 * dtim interval so that the FW can wait until after the DTIM and 3065 * then start the time event, this will potentially allow us to 3066 * remain off-channel for the max duration. 3067 * Since we want to use almost a whole dtim interval we would also 3068 * like the delay to be for 2-3 dtim intervals, in case there are 3069 * other time events with higher priority. 3070 */ 3071 if (vif->bss_conf.assoc) { 3072 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3073 /* We cannot remain off-channel longer than the DTIM interval */ 3074 if (dtim_interval <= req_dur) { 3075 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3076 if (req_dur <= AUX_ROC_MIN_DURATION) 3077 req_dur = dtim_interval - 3078 AUX_ROC_MIN_SAFETY_BUFFER; 3079 } 3080 } 3081 3082 aux_roc_req.duration = cpu_to_le32(req_dur); 3083 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3084 3085 IWL_DEBUG_TE(mvm, 3086 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3087 channel->hw_value, req_dur, duration, delay, 3088 dtim_interval); 3089 /* Set the node address */ 3090 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3091 3092 lockdep_assert_held(&mvm->mutex); 3093 3094 spin_lock_bh(&mvm->time_event_lock); 3095 3096 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3097 spin_unlock_bh(&mvm->time_event_lock); 3098 return -EIO; 3099 } 3100 3101 te_data->vif = vif; 3102 te_data->duration = duration; 3103 te_data->id = HOT_SPOT_CMD; 3104 3105 spin_unlock_bh(&mvm->time_event_lock); 3106 3107 /* 3108 * Use a notification wait, which really just processes the 3109 * command response and doesn't wait for anything, in order 3110 * to be able to process the response and get the UID inside 3111 * the RX path. Using CMD_WANT_SKB doesn't work because it 3112 * stores the buffer and then wakes up this thread, by which 3113 * time another notification (that the time event started) 3114 * might already be processed unsuccessfully. 3115 */ 3116 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3117 time_event_response, 3118 ARRAY_SIZE(time_event_response), 3119 iwl_mvm_rx_aux_roc, te_data); 3120 3121 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3122 &aux_roc_req); 3123 3124 if (res) { 3125 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3126 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3127 goto out_clear_te; 3128 } 3129 3130 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3131 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3132 /* should never fail */ 3133 WARN_ON_ONCE(res); 3134 3135 if (res) { 3136 out_clear_te: 3137 spin_lock_bh(&mvm->time_event_lock); 3138 iwl_mvm_te_clear_data(mvm, te_data); 3139 spin_unlock_bh(&mvm->time_event_lock); 3140 } 3141 3142 return res; 3143 } 3144 3145 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3146 struct ieee80211_vif *vif, 3147 struct ieee80211_channel *channel, 3148 int duration, 3149 enum ieee80211_roc_type type) 3150 { 3151 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3152 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3153 struct cfg80211_chan_def chandef; 3154 struct iwl_mvm_phy_ctxt *phy_ctxt; 3155 int ret, i; 3156 3157 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3158 duration, type); 3159 3160 flush_work(&mvm->roc_done_wk); 3161 3162 mutex_lock(&mvm->mutex); 3163 3164 switch (vif->type) { 3165 case NL80211_IFTYPE_STATION: 3166 if (fw_has_capa(&mvm->fw->ucode_capa, 3167 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3168 /* Use aux roc framework (HS20) */ 3169 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3170 vif, duration); 3171 goto out_unlock; 3172 } 3173 IWL_ERR(mvm, "hotspot not supported\n"); 3174 ret = -EINVAL; 3175 goto out_unlock; 3176 case NL80211_IFTYPE_P2P_DEVICE: 3177 /* handle below */ 3178 break; 3179 default: 3180 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3181 ret = -EINVAL; 3182 goto out_unlock; 3183 } 3184 3185 for (i = 0; i < NUM_PHY_CTX; i++) { 3186 phy_ctxt = &mvm->phy_ctxts[i]; 3187 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3188 continue; 3189 3190 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3191 /* 3192 * Unbind the P2P_DEVICE from the current PHY context, 3193 * and if the PHY context is not used remove it. 3194 */ 3195 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3196 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3197 goto out_unlock; 3198 3199 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3200 3201 /* Bind the P2P_DEVICE to the current PHY Context */ 3202 mvmvif->phy_ctxt = phy_ctxt; 3203 3204 ret = iwl_mvm_binding_add_vif(mvm, vif); 3205 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3206 goto out_unlock; 3207 3208 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3209 goto schedule_time_event; 3210 } 3211 } 3212 3213 /* Need to update the PHY context only if the ROC channel changed */ 3214 if (channel == mvmvif->phy_ctxt->channel) 3215 goto schedule_time_event; 3216 3217 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3218 3219 /* 3220 * Change the PHY context configuration as it is currently referenced 3221 * only by the P2P Device MAC 3222 */ 3223 if (mvmvif->phy_ctxt->ref == 1) { 3224 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3225 &chandef, 1, 1); 3226 if (ret) 3227 goto out_unlock; 3228 } else { 3229 /* 3230 * The PHY context is shared with other MACs. Need to remove the 3231 * P2P Device from the binding, allocate an new PHY context and 3232 * create a new binding 3233 */ 3234 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3235 if (!phy_ctxt) { 3236 ret = -ENOSPC; 3237 goto out_unlock; 3238 } 3239 3240 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3241 1, 1); 3242 if (ret) { 3243 IWL_ERR(mvm, "Failed to change PHY context\n"); 3244 goto out_unlock; 3245 } 3246 3247 /* Unbind the P2P_DEVICE from the current PHY context */ 3248 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3249 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3250 goto out_unlock; 3251 3252 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3253 3254 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3255 mvmvif->phy_ctxt = phy_ctxt; 3256 3257 ret = iwl_mvm_binding_add_vif(mvm, vif); 3258 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3259 goto out_unlock; 3260 3261 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3262 } 3263 3264 schedule_time_event: 3265 /* Schedule the time events */ 3266 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3267 3268 out_unlock: 3269 mutex_unlock(&mvm->mutex); 3270 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3271 return ret; 3272 } 3273 3274 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3275 { 3276 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3277 3278 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3279 3280 mutex_lock(&mvm->mutex); 3281 iwl_mvm_stop_roc(mvm); 3282 mutex_unlock(&mvm->mutex); 3283 3284 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3285 return 0; 3286 } 3287 3288 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3289 struct ieee80211_chanctx_conf *ctx) 3290 { 3291 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3292 struct iwl_mvm_phy_ctxt *phy_ctxt; 3293 int ret; 3294 3295 lockdep_assert_held(&mvm->mutex); 3296 3297 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3298 3299 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3300 if (!phy_ctxt) { 3301 ret = -ENOSPC; 3302 goto out; 3303 } 3304 3305 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3306 ctx->rx_chains_static, 3307 ctx->rx_chains_dynamic); 3308 if (ret) { 3309 IWL_ERR(mvm, "Failed to add PHY context\n"); 3310 goto out; 3311 } 3312 3313 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3314 *phy_ctxt_id = phy_ctxt->id; 3315 out: 3316 return ret; 3317 } 3318 3319 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3320 struct ieee80211_chanctx_conf *ctx) 3321 { 3322 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3323 int ret; 3324 3325 mutex_lock(&mvm->mutex); 3326 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3327 mutex_unlock(&mvm->mutex); 3328 3329 return ret; 3330 } 3331 3332 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3333 struct ieee80211_chanctx_conf *ctx) 3334 { 3335 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3336 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3337 3338 lockdep_assert_held(&mvm->mutex); 3339 3340 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3341 } 3342 3343 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3344 struct ieee80211_chanctx_conf *ctx) 3345 { 3346 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3347 3348 mutex_lock(&mvm->mutex); 3349 __iwl_mvm_remove_chanctx(mvm, ctx); 3350 mutex_unlock(&mvm->mutex); 3351 } 3352 3353 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3354 struct ieee80211_chanctx_conf *ctx, 3355 u32 changed) 3356 { 3357 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3358 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3359 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3360 3361 if (WARN_ONCE((phy_ctxt->ref > 1) && 3362 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3363 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3364 IEEE80211_CHANCTX_CHANGE_RADAR | 3365 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3366 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3367 phy_ctxt->ref, changed)) 3368 return; 3369 3370 mutex_lock(&mvm->mutex); 3371 iwl_mvm_bt_coex_vif_change(mvm); 3372 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3373 ctx->rx_chains_static, 3374 ctx->rx_chains_dynamic); 3375 mutex_unlock(&mvm->mutex); 3376 } 3377 3378 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3379 struct ieee80211_vif *vif, 3380 struct ieee80211_chanctx_conf *ctx, 3381 bool switching_chanctx) 3382 { 3383 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3384 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3385 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3386 int ret; 3387 3388 lockdep_assert_held(&mvm->mutex); 3389 3390 mvmvif->phy_ctxt = phy_ctxt; 3391 3392 switch (vif->type) { 3393 case NL80211_IFTYPE_AP: 3394 /* only needed if we're switching chanctx (i.e. during CSA) */ 3395 if (switching_chanctx) { 3396 mvmvif->ap_ibss_active = true; 3397 break; 3398 } 3399 case NL80211_IFTYPE_ADHOC: 3400 /* 3401 * The AP binding flow is handled as part of the start_ap flow 3402 * (in bss_info_changed), similarly for IBSS. 3403 */ 3404 ret = 0; 3405 goto out; 3406 case NL80211_IFTYPE_STATION: 3407 break; 3408 case NL80211_IFTYPE_MONITOR: 3409 /* always disable PS when a monitor interface is active */ 3410 mvmvif->ps_disabled = true; 3411 break; 3412 default: 3413 ret = -EINVAL; 3414 goto out; 3415 } 3416 3417 ret = iwl_mvm_binding_add_vif(mvm, vif); 3418 if (ret) 3419 goto out; 3420 3421 /* 3422 * Power state must be updated before quotas, 3423 * otherwise fw will complain. 3424 */ 3425 iwl_mvm_power_update_mac(mvm); 3426 3427 /* Setting the quota at this stage is only required for monitor 3428 * interfaces. For the other types, the bss_info changed flow 3429 * will handle quota settings. 3430 */ 3431 if (vif->type == NL80211_IFTYPE_MONITOR) { 3432 mvmvif->monitor_active = true; 3433 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3434 if (ret) 3435 goto out_remove_binding; 3436 3437 ret = iwl_mvm_add_snif_sta(mvm, vif); 3438 if (ret) 3439 goto out_remove_binding; 3440 3441 } 3442 3443 /* Handle binding during CSA */ 3444 if (vif->type == NL80211_IFTYPE_AP) { 3445 iwl_mvm_update_quotas(mvm, false, NULL); 3446 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3447 } 3448 3449 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3450 u32 duration = 2 * vif->bss_conf.beacon_int; 3451 3452 /* iwl_mvm_protect_session() reads directly from the 3453 * device (the system time), so make sure it is 3454 * available. 3455 */ 3456 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3457 if (ret) 3458 goto out_remove_binding; 3459 3460 /* Protect the session to make sure we hear the first 3461 * beacon on the new channel. 3462 */ 3463 iwl_mvm_protect_session(mvm, vif, duration, duration, 3464 vif->bss_conf.beacon_int / 2, 3465 true); 3466 3467 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3468 3469 iwl_mvm_update_quotas(mvm, false, NULL); 3470 } 3471 3472 goto out; 3473 3474 out_remove_binding: 3475 iwl_mvm_binding_remove_vif(mvm, vif); 3476 iwl_mvm_power_update_mac(mvm); 3477 out: 3478 if (ret) 3479 mvmvif->phy_ctxt = NULL; 3480 return ret; 3481 } 3482 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3483 struct ieee80211_vif *vif, 3484 struct ieee80211_chanctx_conf *ctx) 3485 { 3486 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3487 int ret; 3488 3489 mutex_lock(&mvm->mutex); 3490 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3491 mutex_unlock(&mvm->mutex); 3492 3493 return ret; 3494 } 3495 3496 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3497 struct ieee80211_vif *vif, 3498 struct ieee80211_chanctx_conf *ctx, 3499 bool switching_chanctx) 3500 { 3501 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3502 struct ieee80211_vif *disabled_vif = NULL; 3503 3504 lockdep_assert_held(&mvm->mutex); 3505 3506 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3507 3508 switch (vif->type) { 3509 case NL80211_IFTYPE_ADHOC: 3510 goto out; 3511 case NL80211_IFTYPE_MONITOR: 3512 mvmvif->monitor_active = false; 3513 mvmvif->ps_disabled = false; 3514 iwl_mvm_rm_snif_sta(mvm, vif); 3515 break; 3516 case NL80211_IFTYPE_AP: 3517 /* This part is triggered only during CSA */ 3518 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3519 goto out; 3520 3521 mvmvif->csa_countdown = false; 3522 3523 /* Set CS bit on all the stations */ 3524 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3525 3526 /* Save blocked iface, the timeout is set on the next beacon */ 3527 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3528 3529 mvmvif->ap_ibss_active = false; 3530 break; 3531 case NL80211_IFTYPE_STATION: 3532 if (!switching_chanctx) 3533 break; 3534 3535 disabled_vif = vif; 3536 3537 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3538 break; 3539 default: 3540 break; 3541 } 3542 3543 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3544 iwl_mvm_binding_remove_vif(mvm, vif); 3545 3546 out: 3547 mvmvif->phy_ctxt = NULL; 3548 iwl_mvm_power_update_mac(mvm); 3549 } 3550 3551 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3552 struct ieee80211_vif *vif, 3553 struct ieee80211_chanctx_conf *ctx) 3554 { 3555 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3556 3557 mutex_lock(&mvm->mutex); 3558 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3559 mutex_unlock(&mvm->mutex); 3560 } 3561 3562 static int 3563 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3564 struct ieee80211_vif_chanctx_switch *vifs) 3565 { 3566 int ret; 3567 3568 mutex_lock(&mvm->mutex); 3569 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3570 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3571 3572 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3573 if (ret) { 3574 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3575 goto out_reassign; 3576 } 3577 3578 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3579 true); 3580 if (ret) { 3581 IWL_ERR(mvm, 3582 "failed to assign new_ctx during channel switch\n"); 3583 goto out_remove; 3584 } 3585 3586 /* we don't support TDLS during DCM - can be caused by channel switch */ 3587 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3588 iwl_mvm_teardown_tdls_peers(mvm); 3589 3590 goto out; 3591 3592 out_remove: 3593 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3594 3595 out_reassign: 3596 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3597 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3598 goto out_restart; 3599 } 3600 3601 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3602 true)) { 3603 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3604 goto out_restart; 3605 } 3606 3607 goto out; 3608 3609 out_restart: 3610 /* things keep failing, better restart the hw */ 3611 iwl_mvm_nic_restart(mvm, false); 3612 3613 out: 3614 mutex_unlock(&mvm->mutex); 3615 3616 return ret; 3617 } 3618 3619 static int 3620 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 3621 struct ieee80211_vif_chanctx_switch *vifs) 3622 { 3623 int ret; 3624 3625 mutex_lock(&mvm->mutex); 3626 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3627 3628 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3629 true); 3630 if (ret) { 3631 IWL_ERR(mvm, 3632 "failed to assign new_ctx during channel switch\n"); 3633 goto out_reassign; 3634 } 3635 3636 goto out; 3637 3638 out_reassign: 3639 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3640 true)) { 3641 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3642 goto out_restart; 3643 } 3644 3645 goto out; 3646 3647 out_restart: 3648 /* things keep failing, better restart the hw */ 3649 iwl_mvm_nic_restart(mvm, false); 3650 3651 out: 3652 mutex_unlock(&mvm->mutex); 3653 3654 return ret; 3655 } 3656 3657 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 3658 struct ieee80211_vif_chanctx_switch *vifs, 3659 int n_vifs, 3660 enum ieee80211_chanctx_switch_mode mode) 3661 { 3662 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3663 int ret; 3664 3665 /* we only support a single-vif right now */ 3666 if (n_vifs > 1) 3667 return -EOPNOTSUPP; 3668 3669 switch (mode) { 3670 case CHANCTX_SWMODE_SWAP_CONTEXTS: 3671 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 3672 break; 3673 case CHANCTX_SWMODE_REASSIGN_VIF: 3674 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 3675 break; 3676 default: 3677 ret = -EOPNOTSUPP; 3678 break; 3679 } 3680 3681 return ret; 3682 } 3683 3684 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 3685 struct ieee80211_sta *sta, 3686 bool set) 3687 { 3688 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3689 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3690 3691 if (!mvm_sta || !mvm_sta->vif) { 3692 IWL_ERR(mvm, "Station is not associated to a vif\n"); 3693 return -EINVAL; 3694 } 3695 3696 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 3697 } 3698 3699 #ifdef CONFIG_NL80211_TESTMODE 3700 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 3701 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 3702 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 3703 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 3704 }; 3705 3706 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 3707 struct ieee80211_vif *vif, 3708 void *data, int len) 3709 { 3710 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 3711 int err; 3712 u32 noa_duration; 3713 3714 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy); 3715 if (err) 3716 return err; 3717 3718 if (!tb[IWL_MVM_TM_ATTR_CMD]) 3719 return -EINVAL; 3720 3721 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 3722 case IWL_MVM_TM_CMD_SET_NOA: 3723 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 3724 !vif->bss_conf.enable_beacon || 3725 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 3726 return -EINVAL; 3727 3728 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 3729 if (noa_duration >= vif->bss_conf.beacon_int) 3730 return -EINVAL; 3731 3732 mvm->noa_duration = noa_duration; 3733 mvm->noa_vif = vif; 3734 3735 return iwl_mvm_update_quotas(mvm, false, NULL); 3736 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 3737 /* must be associated client vif - ignore authorized */ 3738 if (!vif || vif->type != NL80211_IFTYPE_STATION || 3739 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 3740 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 3741 return -EINVAL; 3742 3743 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 3744 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3745 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3746 } 3747 3748 return -EOPNOTSUPP; 3749 } 3750 3751 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 3752 struct ieee80211_vif *vif, 3753 void *data, int len) 3754 { 3755 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3756 int err; 3757 3758 mutex_lock(&mvm->mutex); 3759 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 3760 mutex_unlock(&mvm->mutex); 3761 3762 return err; 3763 } 3764 #endif 3765 3766 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 3767 struct ieee80211_vif *vif, 3768 struct ieee80211_channel_switch *chsw) 3769 { 3770 /* By implementing this operation, we prevent mac80211 from 3771 * starting its own channel switch timer, so that we can call 3772 * ieee80211_chswitch_done() ourselves at the right time 3773 * (which is when the absence time event starts). 3774 */ 3775 3776 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 3777 "dummy channel switch op\n"); 3778 } 3779 3780 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 3781 struct ieee80211_vif *vif, 3782 struct ieee80211_channel_switch *chsw) 3783 { 3784 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3785 struct ieee80211_vif *csa_vif; 3786 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3787 u32 apply_time; 3788 int ret; 3789 3790 mutex_lock(&mvm->mutex); 3791 3792 mvmvif->csa_failed = false; 3793 3794 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 3795 chsw->chandef.center_freq1); 3796 3797 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH); 3798 3799 switch (vif->type) { 3800 case NL80211_IFTYPE_AP: 3801 csa_vif = 3802 rcu_dereference_protected(mvm->csa_vif, 3803 lockdep_is_held(&mvm->mutex)); 3804 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 3805 "Another CSA is already in progress")) { 3806 ret = -EBUSY; 3807 goto out_unlock; 3808 } 3809 3810 /* we still didn't unblock tx. prevent new CS meanwhile */ 3811 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 3812 lockdep_is_held(&mvm->mutex))) { 3813 ret = -EBUSY; 3814 goto out_unlock; 3815 } 3816 3817 rcu_assign_pointer(mvm->csa_vif, vif); 3818 3819 if (WARN_ONCE(mvmvif->csa_countdown, 3820 "Previous CSA countdown didn't complete")) { 3821 ret = -EBUSY; 3822 goto out_unlock; 3823 } 3824 3825 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 3826 3827 break; 3828 case NL80211_IFTYPE_STATION: 3829 if (mvmvif->lqm_active) 3830 iwl_mvm_send_lqm_cmd(vif, 3831 LQM_CMD_OPERATION_STOP_MEASUREMENT, 3832 0, 0); 3833 3834 /* Schedule the time event to a bit before beacon 1, 3835 * to make sure we're in the new channel when the 3836 * GO/AP arrives. 3837 */ 3838 apply_time = chsw->device_timestamp + 3839 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 3840 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 3841 3842 if (chsw->block_tx) 3843 iwl_mvm_csa_client_absent(mvm, vif); 3844 3845 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 3846 apply_time); 3847 if (mvmvif->bf_data.bf_enabled) { 3848 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3849 if (ret) 3850 goto out_unlock; 3851 } 3852 3853 break; 3854 default: 3855 break; 3856 } 3857 3858 mvmvif->ps_disabled = true; 3859 3860 ret = iwl_mvm_power_update_ps(mvm); 3861 if (ret) 3862 goto out_unlock; 3863 3864 /* we won't be on this channel any longer */ 3865 iwl_mvm_teardown_tdls_peers(mvm); 3866 3867 out_unlock: 3868 mutex_unlock(&mvm->mutex); 3869 3870 return ret; 3871 } 3872 3873 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 3874 struct ieee80211_vif *vif) 3875 { 3876 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3877 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3878 int ret; 3879 3880 mutex_lock(&mvm->mutex); 3881 3882 if (mvmvif->csa_failed) { 3883 mvmvif->csa_failed = false; 3884 ret = -EIO; 3885 goto out_unlock; 3886 } 3887 3888 if (vif->type == NL80211_IFTYPE_STATION) { 3889 struct iwl_mvm_sta *mvmsta; 3890 3891 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 3892 mvmvif->ap_sta_id); 3893 3894 if (WARN_ON(!mvmsta)) { 3895 ret = -EIO; 3896 goto out_unlock; 3897 } 3898 3899 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 3900 3901 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3902 3903 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3904 if (ret) 3905 goto out_unlock; 3906 3907 iwl_mvm_stop_session_protection(mvm, vif); 3908 } 3909 3910 mvmvif->ps_disabled = false; 3911 3912 ret = iwl_mvm_power_update_ps(mvm); 3913 3914 out_unlock: 3915 mutex_unlock(&mvm->mutex); 3916 3917 return ret; 3918 } 3919 3920 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 3921 struct ieee80211_vif *vif, u32 queues, bool drop) 3922 { 3923 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3924 struct iwl_mvm_vif *mvmvif; 3925 struct iwl_mvm_sta *mvmsta; 3926 struct ieee80211_sta *sta; 3927 int i; 3928 u32 msk = 0; 3929 3930 if (!vif || vif->type != NL80211_IFTYPE_STATION) 3931 return; 3932 3933 /* Make sure we're done with the deferred traffic before flushing */ 3934 if (iwl_mvm_is_dqa_supported(mvm)) 3935 flush_work(&mvm->add_stream_wk); 3936 3937 mutex_lock(&mvm->mutex); 3938 mvmvif = iwl_mvm_vif_from_mac80211(vif); 3939 3940 /* flush the AP-station and all TDLS peers */ 3941 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { 3942 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3943 lockdep_is_held(&mvm->mutex)); 3944 if (IS_ERR_OR_NULL(sta)) 3945 continue; 3946 3947 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3948 if (mvmsta->vif != vif) 3949 continue; 3950 3951 /* make sure only TDLS peers or the AP are flushed */ 3952 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 3953 3954 msk |= mvmsta->tfd_queue_msk; 3955 } 3956 3957 if (drop) { 3958 if (iwl_mvm_flush_tx_path(mvm, msk, 0)) 3959 IWL_ERR(mvm, "flush request fail\n"); 3960 mutex_unlock(&mvm->mutex); 3961 } else { 3962 mutex_unlock(&mvm->mutex); 3963 3964 /* this can take a while, and we may need/want other operations 3965 * to succeed while doing this, so do it without the mutex held 3966 */ 3967 iwl_trans_wait_tx_queue_empty(mvm->trans, msk); 3968 } 3969 } 3970 3971 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 3972 struct survey_info *survey) 3973 { 3974 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3975 int ret; 3976 3977 memset(survey, 0, sizeof(*survey)); 3978 3979 /* only support global statistics right now */ 3980 if (idx != 0) 3981 return -ENOENT; 3982 3983 if (!fw_has_capa(&mvm->fw->ucode_capa, 3984 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 3985 return -ENOENT; 3986 3987 mutex_lock(&mvm->mutex); 3988 3989 if (mvm->ucode_loaded) { 3990 ret = iwl_mvm_request_statistics(mvm, false); 3991 if (ret) 3992 goto out; 3993 } 3994 3995 survey->filled = SURVEY_INFO_TIME | 3996 SURVEY_INFO_TIME_RX | 3997 SURVEY_INFO_TIME_TX | 3998 SURVEY_INFO_TIME_SCAN; 3999 survey->time = mvm->accu_radio_stats.on_time_rf + 4000 mvm->radio_stats.on_time_rf; 4001 do_div(survey->time, USEC_PER_MSEC); 4002 4003 survey->time_rx = mvm->accu_radio_stats.rx_time + 4004 mvm->radio_stats.rx_time; 4005 do_div(survey->time_rx, USEC_PER_MSEC); 4006 4007 survey->time_tx = mvm->accu_radio_stats.tx_time + 4008 mvm->radio_stats.tx_time; 4009 do_div(survey->time_tx, USEC_PER_MSEC); 4010 4011 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4012 mvm->radio_stats.on_time_scan; 4013 do_div(survey->time_scan, USEC_PER_MSEC); 4014 4015 ret = 0; 4016 out: 4017 mutex_unlock(&mvm->mutex); 4018 return ret; 4019 } 4020 4021 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4022 struct ieee80211_vif *vif, 4023 struct ieee80211_sta *sta, 4024 struct station_info *sinfo) 4025 { 4026 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4027 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4028 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4029 4030 if (mvmsta->avg_energy) { 4031 sinfo->signal_avg = mvmsta->avg_energy; 4032 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); 4033 } 4034 4035 if (!fw_has_capa(&mvm->fw->ucode_capa, 4036 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4037 return; 4038 4039 /* if beacon filtering isn't on mac80211 does it anyway */ 4040 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4041 return; 4042 4043 if (!vif->bss_conf.assoc) 4044 return; 4045 4046 mutex_lock(&mvm->mutex); 4047 4048 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4049 goto unlock; 4050 4051 if (iwl_mvm_request_statistics(mvm, false)) 4052 goto unlock; 4053 4054 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4055 mvmvif->beacon_stats.accu_num_beacons; 4056 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX); 4057 if (mvmvif->beacon_stats.avg_signal) { 4058 /* firmware only reports a value after RXing a few beacons */ 4059 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4060 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4061 } 4062 unlock: 4063 mutex_unlock(&mvm->mutex); 4064 } 4065 4066 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4067 struct ieee80211_vif *vif, 4068 const struct ieee80211_event *event) 4069 { 4070 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \ 4071 do { \ 4072 if ((_cnt) && --(_cnt)) \ 4073 break; \ 4074 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\ 4075 } while (0) 4076 4077 struct iwl_fw_dbg_trigger_tlv *trig; 4078 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4079 4080 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 4081 return; 4082 4083 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 4084 trig_mlme = (void *)trig->data; 4085 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 4086 return; 4087 4088 if (event->u.mlme.data == ASSOC_EVENT) { 4089 if (event->u.mlme.status == MLME_DENIED) 4090 CHECK_MLME_TRIGGER(mvm, trig, buf, 4091 trig_mlme->stop_assoc_denied, 4092 "DENIED ASSOC: reason %d", 4093 event->u.mlme.reason); 4094 else if (event->u.mlme.status == MLME_TIMEOUT) 4095 CHECK_MLME_TRIGGER(mvm, trig, buf, 4096 trig_mlme->stop_assoc_timeout, 4097 "ASSOC TIMEOUT"); 4098 } else if (event->u.mlme.data == AUTH_EVENT) { 4099 if (event->u.mlme.status == MLME_DENIED) 4100 CHECK_MLME_TRIGGER(mvm, trig, buf, 4101 trig_mlme->stop_auth_denied, 4102 "DENIED AUTH: reason %d", 4103 event->u.mlme.reason); 4104 else if (event->u.mlme.status == MLME_TIMEOUT) 4105 CHECK_MLME_TRIGGER(mvm, trig, buf, 4106 trig_mlme->stop_auth_timeout, 4107 "AUTH TIMEOUT"); 4108 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4109 CHECK_MLME_TRIGGER(mvm, trig, buf, 4110 trig_mlme->stop_rx_deauth, 4111 "DEAUTH RX %d", event->u.mlme.reason); 4112 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4113 CHECK_MLME_TRIGGER(mvm, trig, buf, 4114 trig_mlme->stop_tx_deauth, 4115 "DEAUTH TX %d", event->u.mlme.reason); 4116 } 4117 #undef CHECK_MLME_TRIGGER 4118 } 4119 4120 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4121 struct ieee80211_vif *vif, 4122 const struct ieee80211_event *event) 4123 { 4124 struct iwl_fw_dbg_trigger_tlv *trig; 4125 struct iwl_fw_dbg_trigger_ba *ba_trig; 4126 4127 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4128 return; 4129 4130 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4131 ba_trig = (void *)trig->data; 4132 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 4133 return; 4134 4135 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4136 return; 4137 4138 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 4139 "BAR received from %pM, tid %d, ssn %d", 4140 event->u.ba.sta->addr, event->u.ba.tid, 4141 event->u.ba.ssn); 4142 } 4143 4144 static void 4145 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 4146 struct ieee80211_vif *vif, 4147 const struct ieee80211_event *event) 4148 { 4149 struct iwl_fw_dbg_trigger_tlv *trig; 4150 struct iwl_fw_dbg_trigger_ba *ba_trig; 4151 4152 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4153 return; 4154 4155 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4156 ba_trig = (void *)trig->data; 4157 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 4158 return; 4159 4160 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid))) 4161 return; 4162 4163 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 4164 "Frame from %pM timed out, tid %d", 4165 event->u.ba.sta->addr, event->u.ba.tid); 4166 } 4167 4168 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4169 struct ieee80211_vif *vif, 4170 const struct ieee80211_event *event) 4171 { 4172 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4173 4174 switch (event->type) { 4175 case MLME_EVENT: 4176 iwl_mvm_event_mlme_callback(mvm, vif, event); 4177 break; 4178 case BAR_RX_EVENT: 4179 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4180 break; 4181 case BA_FRAME_TIMEOUT: 4182 iwl_mvm_event_frame_timeout_callback(mvm, vif, event); 4183 break; 4184 default: 4185 break; 4186 } 4187 } 4188 4189 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4190 struct iwl_mvm_internal_rxq_notif *notif, 4191 u32 size) 4192 { 4193 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4194 int ret; 4195 4196 lockdep_assert_held(&mvm->mutex); 4197 4198 if (!iwl_mvm_has_new_rx_api(mvm)) 4199 return; 4200 4201 notif->cookie = mvm->queue_sync_cookie; 4202 4203 if (notif->sync) 4204 atomic_set(&mvm->queue_sync_counter, 4205 mvm->trans->num_rx_queues); 4206 4207 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4208 if (ret) { 4209 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4210 goto out; 4211 } 4212 4213 if (notif->sync) 4214 ret = wait_event_timeout(mvm->rx_sync_waitq, 4215 atomic_read(&mvm->queue_sync_counter) == 0, 4216 HZ); 4217 WARN_ON_ONCE(!ret); 4218 4219 out: 4220 atomic_set(&mvm->queue_sync_counter, 0); 4221 mvm->queue_sync_cookie++; 4222 } 4223 4224 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4225 { 4226 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4227 struct iwl_mvm_internal_rxq_notif data = { 4228 .type = IWL_MVM_RXQ_EMPTY, 4229 .sync = 1, 4230 }; 4231 4232 mutex_lock(&mvm->mutex); 4233 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4234 mutex_unlock(&mvm->mutex); 4235 } 4236 4237 const struct ieee80211_ops iwl_mvm_hw_ops = { 4238 .tx = iwl_mvm_mac_tx, 4239 .ampdu_action = iwl_mvm_mac_ampdu_action, 4240 .start = iwl_mvm_mac_start, 4241 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4242 .stop = iwl_mvm_mac_stop, 4243 .add_interface = iwl_mvm_mac_add_interface, 4244 .remove_interface = iwl_mvm_mac_remove_interface, 4245 .config = iwl_mvm_mac_config, 4246 .prepare_multicast = iwl_mvm_prepare_multicast, 4247 .configure_filter = iwl_mvm_configure_filter, 4248 .config_iface_filter = iwl_mvm_config_iface_filter, 4249 .bss_info_changed = iwl_mvm_bss_info_changed, 4250 .hw_scan = iwl_mvm_mac_hw_scan, 4251 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4252 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4253 .sta_state = iwl_mvm_mac_sta_state, 4254 .sta_notify = iwl_mvm_mac_sta_notify, 4255 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4256 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4257 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4258 .sta_rc_update = iwl_mvm_sta_rc_update, 4259 .conf_tx = iwl_mvm_mac_conf_tx, 4260 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4261 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4262 .flush = iwl_mvm_mac_flush, 4263 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4264 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4265 .set_key = iwl_mvm_mac_set_key, 4266 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4267 .remain_on_channel = iwl_mvm_roc, 4268 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4269 .add_chanctx = iwl_mvm_add_chanctx, 4270 .remove_chanctx = iwl_mvm_remove_chanctx, 4271 .change_chanctx = iwl_mvm_change_chanctx, 4272 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4273 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4274 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4275 4276 .start_ap = iwl_mvm_start_ap_ibss, 4277 .stop_ap = iwl_mvm_stop_ap_ibss, 4278 .join_ibss = iwl_mvm_start_ap_ibss, 4279 .leave_ibss = iwl_mvm_stop_ap_ibss, 4280 4281 .set_tim = iwl_mvm_set_tim, 4282 4283 .channel_switch = iwl_mvm_channel_switch, 4284 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4285 .post_channel_switch = iwl_mvm_post_channel_switch, 4286 4287 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4288 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4289 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4290 4291 .event_callback = iwl_mvm_mac_event_callback, 4292 4293 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4294 4295 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4296 4297 #ifdef CONFIG_PM_SLEEP 4298 /* look at d3.c */ 4299 .suspend = iwl_mvm_suspend, 4300 .resume = iwl_mvm_resume, 4301 .set_wakeup = iwl_mvm_set_wakeup, 4302 .set_rekey_data = iwl_mvm_set_rekey_data, 4303 #if IS_ENABLED(CONFIG_IPV6) 4304 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4305 #endif 4306 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4307 #endif 4308 .get_survey = iwl_mvm_mac_get_survey, 4309 .sta_statistics = iwl_mvm_mac_sta_statistics, 4310 }; 4311