1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 24 * USA 25 * 26 * The full GNU General Public License is included in this distribution 27 * in the file called COPYING. 28 * 29 * Contact Information: 30 * Intel Linux Wireless <linuxwifi@intel.com> 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 32 * 33 * BSD LICENSE 34 * 35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 37 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 38 * All rights reserved. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 44 * * Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * * Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in 48 * the documentation and/or other materials provided with the 49 * distribution. 50 * * Neither the name Intel Corporation nor the names of its 51 * contributors may be used to endorse or promote products derived 52 * from this software without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 65 * 66 *****************************************************************************/ 67 #include <linux/kernel.h> 68 #include <linux/slab.h> 69 #include <linux/skbuff.h> 70 #include <linux/netdevice.h> 71 #include <linux/etherdevice.h> 72 #include <linux/ip.h> 73 #include <linux/if_arp.h> 74 #include <linux/time.h> 75 #include <net/mac80211.h> 76 #include <net/ieee80211_radiotap.h> 77 #include <net/tcp.h> 78 79 #include "iwl-op-mode.h" 80 #include "iwl-io.h" 81 #include "mvm.h" 82 #include "sta.h" 83 #include "time-event.h" 84 #include "iwl-eeprom-parse.h" 85 #include "iwl-phy-db.h" 86 #include "testmode.h" 87 #include "iwl-fw-error-dump.h" 88 #include "iwl-prph.h" 89 #include "iwl-nvm-parse.h" 90 #include "fw-dbg.h" 91 92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = { 93 { 94 .max = 1, 95 .types = BIT(NL80211_IFTYPE_STATION), 96 }, 97 { 98 .max = 1, 99 .types = BIT(NL80211_IFTYPE_AP) | 100 BIT(NL80211_IFTYPE_P2P_CLIENT) | 101 BIT(NL80211_IFTYPE_P2P_GO), 102 }, 103 { 104 .max = 1, 105 .types = BIT(NL80211_IFTYPE_P2P_DEVICE), 106 }, 107 }; 108 109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = { 110 { 111 .num_different_channels = 2, 112 .max_interfaces = 3, 113 .limits = iwl_mvm_limits, 114 .n_limits = ARRAY_SIZE(iwl_mvm_limits), 115 }, 116 }; 117 118 #ifdef CONFIG_PM_SLEEP 119 static const struct nl80211_wowlan_tcp_data_token_feature 120 iwl_mvm_wowlan_tcp_token_feature = { 121 .min_len = 0, 122 .max_len = 255, 123 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS, 124 }; 125 126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = { 127 .tok = &iwl_mvm_wowlan_tcp_token_feature, 128 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN - 129 sizeof(struct ethhdr) - 130 sizeof(struct iphdr) - 131 sizeof(struct tcphdr), 132 .data_interval_max = 65535, /* __le16 in API */ 133 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN - 134 sizeof(struct ethhdr) - 135 sizeof(struct iphdr) - 136 sizeof(struct tcphdr), 137 .seq = true, 138 }; 139 #endif 140 141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 142 /* 143 * Use the reserved field to indicate magic values. 144 * these values will only be used internally by the driver, 145 * and won't make it to the fw (reserved will be 0). 146 * BC_FILTER_MAGIC_IP - configure the val of this attribute to 147 * be the vif's ip address. in case there is not a single 148 * ip address (0, or more than 1), this attribute will 149 * be skipped. 150 * BC_FILTER_MAGIC_MAC - set the val of this attribute to 151 * the LSB bytes of the vif's mac address 152 */ 153 enum { 154 BC_FILTER_MAGIC_NONE = 0, 155 BC_FILTER_MAGIC_IP, 156 BC_FILTER_MAGIC_MAC, 157 }; 158 159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = { 160 { 161 /* arp */ 162 .discard = 0, 163 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL, 164 .attrs = { 165 { 166 /* frame type - arp, hw type - ethernet */ 167 .offset_type = 168 BCAST_FILTER_OFFSET_PAYLOAD_START, 169 .offset = sizeof(rfc1042_header), 170 .val = cpu_to_be32(0x08060001), 171 .mask = cpu_to_be32(0xffffffff), 172 }, 173 { 174 /* arp dest ip */ 175 .offset_type = 176 BCAST_FILTER_OFFSET_PAYLOAD_START, 177 .offset = sizeof(rfc1042_header) + 2 + 178 sizeof(struct arphdr) + 179 ETH_ALEN + sizeof(__be32) + 180 ETH_ALEN, 181 .mask = cpu_to_be32(0xffffffff), 182 /* mark it as special field */ 183 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP), 184 }, 185 }, 186 }, 187 { 188 /* dhcp offer bcast */ 189 .discard = 0, 190 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4, 191 .attrs = { 192 { 193 /* udp dest port - 68 (bootp client)*/ 194 .offset_type = BCAST_FILTER_OFFSET_IP_END, 195 .offset = offsetof(struct udphdr, dest), 196 .val = cpu_to_be32(0x00440000), 197 .mask = cpu_to_be32(0xffff0000), 198 }, 199 { 200 /* dhcp - lsb bytes of client hw address */ 201 .offset_type = BCAST_FILTER_OFFSET_IP_END, 202 .offset = 38, 203 .mask = cpu_to_be32(0xffffffff), 204 /* mark it as special field */ 205 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC), 206 }, 207 }, 208 }, 209 /* last filter must be empty */ 210 {}, 211 }; 212 #endif 213 214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 215 { 216 if (!iwl_mvm_is_d0i3_supported(mvm)) 217 return; 218 219 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type); 220 spin_lock_bh(&mvm->refs_lock); 221 mvm->refs[ref_type]++; 222 spin_unlock_bh(&mvm->refs_lock); 223 iwl_trans_ref(mvm->trans); 224 } 225 226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 227 { 228 if (!iwl_mvm_is_d0i3_supported(mvm)) 229 return; 230 231 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type); 232 spin_lock_bh(&mvm->refs_lock); 233 if (WARN_ON(!mvm->refs[ref_type])) { 234 spin_unlock_bh(&mvm->refs_lock); 235 return; 236 } 237 mvm->refs[ref_type]--; 238 spin_unlock_bh(&mvm->refs_lock); 239 iwl_trans_unref(mvm->trans); 240 } 241 242 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm, 243 enum iwl_mvm_ref_type except_ref) 244 { 245 int i, j; 246 247 if (!iwl_mvm_is_d0i3_supported(mvm)) 248 return; 249 250 spin_lock_bh(&mvm->refs_lock); 251 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 252 if (except_ref == i || !mvm->refs[i]) 253 continue; 254 255 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n", 256 i, mvm->refs[i]); 257 for (j = 0; j < mvm->refs[i]; j++) 258 iwl_trans_unref(mvm->trans); 259 mvm->refs[i] = 0; 260 } 261 spin_unlock_bh(&mvm->refs_lock); 262 } 263 264 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm) 265 { 266 int i; 267 bool taken = false; 268 269 if (!iwl_mvm_is_d0i3_supported(mvm)) 270 return true; 271 272 spin_lock_bh(&mvm->refs_lock); 273 for (i = 0; i < IWL_MVM_REF_COUNT; i++) { 274 if (mvm->refs[i]) { 275 taken = true; 276 break; 277 } 278 } 279 spin_unlock_bh(&mvm->refs_lock); 280 281 return taken; 282 } 283 284 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) 285 { 286 iwl_mvm_ref(mvm, ref_type); 287 288 if (!wait_event_timeout(mvm->d0i3_exit_waitq, 289 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), 290 HZ)) { 291 WARN_ON_ONCE(1); 292 iwl_mvm_unref(mvm, ref_type); 293 return -EIO; 294 } 295 296 return 0; 297 } 298 299 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm) 300 { 301 int i; 302 303 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts)); 304 for (i = 0; i < NUM_PHY_CTX; i++) { 305 mvm->phy_ctxts[i].id = i; 306 mvm->phy_ctxts[i].ref = 0; 307 } 308 } 309 310 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy, 311 const char *alpha2, 312 enum iwl_mcc_source src_id, 313 bool *changed) 314 { 315 struct ieee80211_regdomain *regd = NULL; 316 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 317 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 318 struct iwl_mcc_update_resp *resp; 319 320 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 321 322 lockdep_assert_held(&mvm->mutex); 323 324 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 325 if (IS_ERR_OR_NULL(resp)) { 326 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 327 PTR_ERR_OR_ZERO(resp)); 328 goto out; 329 } 330 331 if (changed) 332 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE); 333 334 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 335 __le32_to_cpu(resp->n_channels), 336 resp->channels, 337 __le16_to_cpu(resp->mcc)); 338 /* Store the return source id */ 339 src_id = resp->source_id; 340 kfree(resp); 341 if (IS_ERR_OR_NULL(regd)) { 342 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 343 PTR_ERR_OR_ZERO(regd)); 344 goto out; 345 } 346 347 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 348 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 349 mvm->lar_regdom_set = true; 350 mvm->mcc_src = src_id; 351 352 out: 353 return regd; 354 } 355 356 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 357 { 358 bool changed; 359 struct ieee80211_regdomain *regd; 360 361 if (!iwl_mvm_is_lar_supported(mvm)) 362 return; 363 364 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 365 if (!IS_ERR_OR_NULL(regd)) { 366 /* only update the regulatory core if changed */ 367 if (changed) 368 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 369 370 kfree(regd); 371 } 372 } 373 374 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 375 bool *changed) 376 { 377 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 378 iwl_mvm_is_wifi_mcc_supported(mvm) ? 379 MCC_SOURCE_GET_CURRENT : 380 MCC_SOURCE_OLD_FW, changed); 381 } 382 383 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 384 { 385 enum iwl_mcc_source used_src; 386 struct ieee80211_regdomain *regd; 387 int ret; 388 bool changed; 389 const struct ieee80211_regdomain *r = 390 rtnl_dereference(mvm->hw->wiphy->regd); 391 392 if (!r) 393 return -ENOENT; 394 395 /* save the last source in case we overwrite it below */ 396 used_src = mvm->mcc_src; 397 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 398 /* Notify the firmware we support wifi location updates */ 399 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 400 if (!IS_ERR_OR_NULL(regd)) 401 kfree(regd); 402 } 403 404 /* Now set our last stored MCC and source */ 405 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 406 &changed); 407 if (IS_ERR_OR_NULL(regd)) 408 return -EIO; 409 410 /* update cfg80211 if the regdomain was changed */ 411 if (changed) 412 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 413 else 414 ret = 0; 415 416 kfree(regd); 417 return ret; 418 } 419 420 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 421 { 422 struct ieee80211_hw *hw = mvm->hw; 423 int num_mac, ret, i; 424 static const u32 mvm_ciphers[] = { 425 WLAN_CIPHER_SUITE_WEP40, 426 WLAN_CIPHER_SUITE_WEP104, 427 WLAN_CIPHER_SUITE_TKIP, 428 WLAN_CIPHER_SUITE_CCMP, 429 }; 430 431 /* Tell mac80211 our characteristics */ 432 ieee80211_hw_set(hw, SIGNAL_DBM); 433 ieee80211_hw_set(hw, SPECTRUM_MGMT); 434 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 435 ieee80211_hw_set(hw, QUEUE_CONTROL); 436 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 437 ieee80211_hw_set(hw, SUPPORTS_PS); 438 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 439 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 440 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 441 ieee80211_hw_set(hw, CONNECTION_MONITOR); 442 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 443 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 444 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 445 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 446 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 447 if (iwl_mvm_has_new_rx_api(mvm)) 448 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 449 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) 450 ieee80211_hw_set(hw, AP_LINK_PS); 451 452 if (mvm->trans->num_rx_queues > 1) 453 ieee80211_hw_set(hw, USES_RSS); 454 455 if (mvm->trans->max_skb_frags) 456 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 457 458 if (!iwl_mvm_is_dqa_supported(mvm)) 459 hw->queues = mvm->first_agg_queue; 460 else 461 hw->queues = IEEE80211_MAX_QUEUES; 462 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 463 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 464 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 465 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 466 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 467 468 hw->radiotap_timestamp.units_pos = 469 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 470 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 471 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 472 hw->radiotap_timestamp.accuracy = 22; 473 474 hw->rate_control_algorithm = "iwl-mvm-rs"; 475 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 476 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 477 478 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 479 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 480 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 481 hw->wiphy->cipher_suites = mvm->ciphers; 482 483 if (iwl_mvm_has_new_rx_api(mvm)) { 484 mvm->ciphers[hw->wiphy->n_cipher_suites] = 485 WLAN_CIPHER_SUITE_GCMP; 486 hw->wiphy->n_cipher_suites++; 487 mvm->ciphers[hw->wiphy->n_cipher_suites] = 488 WLAN_CIPHER_SUITE_GCMP_256; 489 hw->wiphy->n_cipher_suites++; 490 } 491 492 /* Enable 11w if software crypto is not enabled (as the 493 * firmware will interpret some mgmt packets, so enabling it 494 * with software crypto isn't safe). 495 */ 496 if (!iwlwifi_mod_params.sw_crypto) { 497 ieee80211_hw_set(hw, MFP_CAPABLE); 498 mvm->ciphers[hw->wiphy->n_cipher_suites] = 499 WLAN_CIPHER_SUITE_AES_CMAC; 500 hw->wiphy->n_cipher_suites++; 501 if (iwl_mvm_has_new_rx_api(mvm)) { 502 mvm->ciphers[hw->wiphy->n_cipher_suites] = 503 WLAN_CIPHER_SUITE_BIP_GMAC_128; 504 hw->wiphy->n_cipher_suites++; 505 mvm->ciphers[hw->wiphy->n_cipher_suites] = 506 WLAN_CIPHER_SUITE_BIP_GMAC_256; 507 hw->wiphy->n_cipher_suites++; 508 } 509 } 510 511 /* currently FW API supports only one optional cipher scheme */ 512 if (mvm->fw->cs[0].cipher) { 513 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 514 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 515 516 mvm->hw->n_cipher_schemes = 1; 517 518 cs->cipher = le32_to_cpu(fwcs->cipher); 519 cs->iftype = BIT(NL80211_IFTYPE_STATION); 520 cs->hdr_len = fwcs->hdr_len; 521 cs->pn_len = fwcs->pn_len; 522 cs->pn_off = fwcs->pn_off; 523 cs->key_idx_off = fwcs->key_idx_off; 524 cs->key_idx_mask = fwcs->key_idx_mask; 525 cs->key_idx_shift = fwcs->key_idx_shift; 526 cs->mic_len = fwcs->mic_len; 527 528 mvm->hw->cipher_schemes = mvm->cs; 529 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 530 hw->wiphy->n_cipher_suites++; 531 } 532 533 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 534 hw->wiphy->features |= 535 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 536 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 537 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 538 539 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 540 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 541 hw->chanctx_data_size = sizeof(u16); 542 543 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 544 BIT(NL80211_IFTYPE_P2P_CLIENT) | 545 BIT(NL80211_IFTYPE_AP) | 546 BIT(NL80211_IFTYPE_P2P_GO) | 547 BIT(NL80211_IFTYPE_P2P_DEVICE) | 548 BIT(NL80211_IFTYPE_ADHOC); 549 550 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 551 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 552 if (iwl_mvm_is_lar_supported(mvm)) 553 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 554 else 555 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 556 REGULATORY_DISABLE_BEACON_HINTS; 557 558 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 559 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 560 561 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 562 hw->wiphy->n_iface_combinations = 563 ARRAY_SIZE(iwl_mvm_iface_combinations); 564 565 hw->wiphy->max_remain_on_channel_duration = 10000; 566 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 567 /* we can compensate an offset of up to 3 channels = 15 MHz */ 568 hw->wiphy->max_adj_channel_rssi_comp = 3 * 5; 569 570 /* Extract MAC address */ 571 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 572 hw->wiphy->addresses = mvm->addresses; 573 hw->wiphy->n_addresses = 1; 574 575 /* Extract additional MAC addresses if available */ 576 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 577 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 578 579 for (i = 1; i < num_mac; i++) { 580 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 581 ETH_ALEN); 582 mvm->addresses[i].addr[5]++; 583 hw->wiphy->n_addresses++; 584 } 585 586 iwl_mvm_reset_phy_ctxts(mvm); 587 588 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 589 590 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 591 592 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 593 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 594 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 595 596 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 597 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 598 else 599 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 600 601 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 602 hw->wiphy->bands[NL80211_BAND_2GHZ] = 603 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 604 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 605 hw->wiphy->bands[NL80211_BAND_5GHZ] = 606 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 607 608 if (fw_has_capa(&mvm->fw->ucode_capa, 609 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 610 fw_has_api(&mvm->fw->ucode_capa, 611 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 612 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 613 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 614 } 615 616 hw->wiphy->hw_version = mvm->trans->hw_id; 617 618 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 619 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 620 else 621 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 622 623 hw->wiphy->max_sched_scan_reqs = 1; 624 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 625 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES; 626 /* we create the 802.11 header and zero length SSID IE. */ 627 hw->wiphy->max_sched_scan_ie_len = 628 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 629 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 630 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 631 632 /* 633 * the firmware uses u8 for num of iterations, but 0xff is saved for 634 * infinite loop, so the maximum number of iterations is actually 254. 635 */ 636 hw->wiphy->max_sched_scan_plan_iterations = 254; 637 638 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 639 NL80211_FEATURE_LOW_PRIORITY_SCAN | 640 NL80211_FEATURE_P2P_GO_OPPPS | 641 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 642 NL80211_FEATURE_DYNAMIC_SMPS | 643 NL80211_FEATURE_STATIC_SMPS | 644 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 645 646 if (fw_has_capa(&mvm->fw->ucode_capa, 647 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 648 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 649 if (fw_has_capa(&mvm->fw->ucode_capa, 650 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 651 hw->wiphy->features |= NL80211_FEATURE_QUIET; 652 653 if (fw_has_capa(&mvm->fw->ucode_capa, 654 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 655 hw->wiphy->features |= 656 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 657 658 if (fw_has_capa(&mvm->fw->ucode_capa, 659 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 660 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 661 662 if (fw_has_api(&mvm->fw->ucode_capa, 663 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 664 wiphy_ext_feature_set(hw->wiphy, 665 NL80211_EXT_FEATURE_SCAN_START_TIME); 666 wiphy_ext_feature_set(hw->wiphy, 667 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 668 wiphy_ext_feature_set(hw->wiphy, 669 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 670 } 671 672 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 673 674 #ifdef CONFIG_PM_SLEEP 675 if (iwl_mvm_is_d0i3_supported(mvm) && 676 device_can_wakeup(mvm->trans->dev)) { 677 mvm->wowlan.flags = WIPHY_WOWLAN_ANY; 678 hw->wiphy->wowlan = &mvm->wowlan; 679 } 680 681 if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec && 682 mvm->trans->ops->d3_suspend && 683 mvm->trans->ops->d3_resume && 684 device_can_wakeup(mvm->trans->dev)) { 685 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 686 WIPHY_WOWLAN_DISCONNECT | 687 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 688 WIPHY_WOWLAN_RFKILL_RELEASE | 689 WIPHY_WOWLAN_NET_DETECT; 690 if (!iwlwifi_mod_params.sw_crypto) 691 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 692 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 693 WIPHY_WOWLAN_4WAY_HANDSHAKE; 694 695 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 696 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 697 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 698 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES; 699 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support; 700 hw->wiphy->wowlan = &mvm->wowlan; 701 } 702 #endif 703 704 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 705 /* assign default bcast filtering configuration */ 706 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 707 #endif 708 709 ret = iwl_mvm_leds_init(mvm); 710 if (ret) 711 return ret; 712 713 if (fw_has_capa(&mvm->fw->ucode_capa, 714 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 715 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 716 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 717 ieee80211_hw_set(hw, TDLS_WIDER_BW); 718 } 719 720 if (fw_has_capa(&mvm->fw->ucode_capa, 721 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 722 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 723 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 724 } 725 726 hw->netdev_features |= mvm->cfg->features; 727 if (!iwl_mvm_is_csum_supported(mvm)) { 728 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 729 NETIF_F_RXCSUM); 730 /* We may support SW TX CSUM */ 731 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 732 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 733 } 734 735 ret = ieee80211_register_hw(mvm->hw); 736 if (ret) 737 iwl_mvm_leds_exit(mvm); 738 739 if (mvm->cfg->vht_mu_mimo_supported) 740 wiphy_ext_feature_set(hw->wiphy, 741 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 742 743 return ret; 744 } 745 746 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm, 747 struct ieee80211_sta *sta, 748 struct sk_buff *skb) 749 { 750 struct iwl_mvm_sta *mvmsta; 751 bool defer = false; 752 753 /* 754 * double check the IN_D0I3 flag both before and after 755 * taking the spinlock, in order to prevent taking 756 * the spinlock when not needed. 757 */ 758 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))) 759 return false; 760 761 spin_lock(&mvm->d0i3_tx_lock); 762 /* 763 * testing the flag again ensures the skb dequeue 764 * loop (on d0i3 exit) hasn't run yet. 765 */ 766 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) 767 goto out; 768 769 mvmsta = iwl_mvm_sta_from_mac80211(sta); 770 if (mvmsta->sta_id == IWL_MVM_INVALID_STA || 771 mvmsta->sta_id != mvm->d0i3_ap_sta_id) 772 goto out; 773 774 __skb_queue_tail(&mvm->d0i3_tx, skb); 775 ieee80211_stop_queues(mvm->hw); 776 777 /* trigger wakeup */ 778 iwl_mvm_ref(mvm, IWL_MVM_REF_TX); 779 iwl_mvm_unref(mvm, IWL_MVM_REF_TX); 780 781 defer = true; 782 out: 783 spin_unlock(&mvm->d0i3_tx_lock); 784 return defer; 785 } 786 787 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 788 struct ieee80211_tx_control *control, 789 struct sk_buff *skb) 790 { 791 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 792 struct ieee80211_sta *sta = control->sta; 793 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 794 struct ieee80211_hdr *hdr = (void *)skb->data; 795 796 if (iwl_mvm_is_radio_killed(mvm)) { 797 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 798 goto drop; 799 } 800 801 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && 802 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 803 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 804 goto drop; 805 806 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */ 807 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER && 808 ieee80211_is_mgmt(hdr->frame_control) && 809 !ieee80211_is_deauth(hdr->frame_control) && 810 !ieee80211_is_disassoc(hdr->frame_control) && 811 !ieee80211_is_action(hdr->frame_control))) 812 sta = NULL; 813 814 if (sta) { 815 if (iwl_mvm_defer_tx(mvm, sta, skb)) 816 return; 817 if (iwl_mvm_tx_skb(mvm, skb, sta)) 818 goto drop; 819 return; 820 } 821 822 if (iwl_mvm_tx_skb_non_sta(mvm, skb)) 823 goto drop; 824 return; 825 drop: 826 ieee80211_free_txskb(hw, skb); 827 } 828 829 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg) 830 { 831 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) 832 return false; 833 return true; 834 } 835 836 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg) 837 { 838 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) 839 return false; 840 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG) 841 return true; 842 843 /* enabled by default */ 844 return true; 845 } 846 847 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 848 do { \ 849 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 850 break; \ 851 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \ 852 } while (0) 853 854 static void 855 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 856 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 857 enum ieee80211_ampdu_mlme_action action) 858 { 859 struct iwl_fw_dbg_trigger_tlv *trig; 860 struct iwl_fw_dbg_trigger_ba *ba_trig; 861 862 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 863 return; 864 865 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 866 ba_trig = (void *)trig->data; 867 868 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 869 return; 870 871 switch (action) { 872 case IEEE80211_AMPDU_TX_OPERATIONAL: { 873 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 874 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 875 876 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 877 "TX AGG START: MAC %pM tid %d ssn %d\n", 878 sta->addr, tid, tid_data->ssn); 879 break; 880 } 881 case IEEE80211_AMPDU_TX_STOP_CONT: 882 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 883 "TX AGG STOP: MAC %pM tid %d\n", 884 sta->addr, tid); 885 break; 886 case IEEE80211_AMPDU_RX_START: 887 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 888 "RX AGG START: MAC %pM tid %d ssn %d\n", 889 sta->addr, tid, rx_ba_ssn); 890 break; 891 case IEEE80211_AMPDU_RX_STOP: 892 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 893 "RX AGG STOP: MAC %pM tid %d\n", 894 sta->addr, tid); 895 break; 896 default: 897 break; 898 } 899 } 900 901 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 902 struct ieee80211_vif *vif, 903 struct ieee80211_ampdu_params *params) 904 { 905 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 906 int ret; 907 bool tx_agg_ref = false; 908 struct ieee80211_sta *sta = params->sta; 909 enum ieee80211_ampdu_mlme_action action = params->action; 910 u16 tid = params->tid; 911 u16 *ssn = ¶ms->ssn; 912 u8 buf_size = params->buf_size; 913 bool amsdu = params->amsdu; 914 u16 timeout = params->timeout; 915 916 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 917 sta->addr, tid, action); 918 919 if (!(mvm->nvm_data->sku_cap_11n_enable)) 920 return -EACCES; 921 922 /* return from D0i3 before starting a new Tx aggregation */ 923 switch (action) { 924 case IEEE80211_AMPDU_TX_START: 925 case IEEE80211_AMPDU_TX_STOP_CONT: 926 case IEEE80211_AMPDU_TX_STOP_FLUSH: 927 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 928 case IEEE80211_AMPDU_TX_OPERATIONAL: 929 /* 930 * for tx start, wait synchronously until D0i3 exit to 931 * get the correct sequence number for the tid. 932 * additionally, some other ampdu actions use direct 933 * target access, which is not handled automatically 934 * by the trans layer (unlike commands), so wait for 935 * d0i3 exit in these cases as well. 936 */ 937 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG); 938 if (ret) 939 return ret; 940 941 tx_agg_ref = true; 942 break; 943 default: 944 break; 945 } 946 947 mutex_lock(&mvm->mutex); 948 949 switch (action) { 950 case IEEE80211_AMPDU_RX_START: 951 if (!iwl_enable_rx_ampdu(mvm->cfg)) { 952 ret = -EINVAL; 953 break; 954 } 955 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 956 timeout); 957 break; 958 case IEEE80211_AMPDU_RX_STOP: 959 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 960 timeout); 961 break; 962 case IEEE80211_AMPDU_TX_START: 963 if (!iwl_enable_tx_ampdu(mvm->cfg)) { 964 ret = -EINVAL; 965 break; 966 } 967 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 968 break; 969 case IEEE80211_AMPDU_TX_STOP_CONT: 970 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 971 break; 972 case IEEE80211_AMPDU_TX_STOP_FLUSH: 973 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 974 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 975 break; 976 case IEEE80211_AMPDU_TX_OPERATIONAL: 977 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 978 buf_size, amsdu); 979 break; 980 default: 981 WARN_ON_ONCE(1); 982 ret = -EINVAL; 983 break; 984 } 985 986 if (!ret) { 987 u16 rx_ba_ssn = 0; 988 989 if (action == IEEE80211_AMPDU_RX_START) 990 rx_ba_ssn = *ssn; 991 992 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 993 rx_ba_ssn, action); 994 } 995 mutex_unlock(&mvm->mutex); 996 997 /* 998 * If the tid is marked as started, we won't use it for offloaded 999 * traffic on the next D0i3 entry. It's safe to unref. 1000 */ 1001 if (tx_agg_ref) 1002 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG); 1003 1004 return ret; 1005 } 1006 1007 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1008 struct ieee80211_vif *vif) 1009 { 1010 struct iwl_mvm *mvm = data; 1011 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1012 1013 mvmvif->uploaded = false; 1014 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1015 1016 spin_lock_bh(&mvm->time_event_lock); 1017 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1018 spin_unlock_bh(&mvm->time_event_lock); 1019 1020 mvmvif->phy_ctxt = NULL; 1021 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1022 } 1023 1024 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1025 { 1026 /* clear the D3 reconfig, we only need it to avoid dumping a 1027 * firmware coredump on reconfiguration, we shouldn't do that 1028 * on D3->D0 transition 1029 */ 1030 if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) { 1031 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert; 1032 iwl_mvm_fw_error_dump(mvm); 1033 } 1034 1035 /* cleanup all stale references (scan, roc), but keep the 1036 * ucode_down ref until reconfig is complete 1037 */ 1038 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN); 1039 1040 iwl_mvm_stop_device(mvm); 1041 1042 mvm->scan_status = 0; 1043 mvm->ps_disabled = false; 1044 mvm->calibrating = false; 1045 1046 /* just in case one was running */ 1047 iwl_mvm_cleanup_roc_te(mvm); 1048 ieee80211_remain_on_channel_expired(mvm->hw); 1049 1050 /* 1051 * cleanup all interfaces, even inactive ones, as some might have 1052 * gone down during the HW restart 1053 */ 1054 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1055 1056 mvm->p2p_device_vif = NULL; 1057 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1058 1059 iwl_mvm_reset_phy_ctxts(mvm); 1060 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1061 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained)); 1062 memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames)); 1063 memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained)); 1064 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1065 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1066 1067 ieee80211_wake_queues(mvm->hw); 1068 1069 /* clear any stale d0i3 state */ 1070 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status); 1071 1072 mvm->vif_count = 0; 1073 mvm->rx_ba_sessions = 0; 1074 mvm->fw_dbg_conf = FW_DBG_INVALID; 1075 1076 /* keep statistics ticking */ 1077 iwl_mvm_accu_radio_stats(mvm); 1078 } 1079 1080 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1081 { 1082 int ret; 1083 1084 lockdep_assert_held(&mvm->mutex); 1085 1086 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1087 /* Clean up some internal and mac80211 state on restart */ 1088 iwl_mvm_restart_cleanup(mvm); 1089 } else { 1090 /* Hold the reference to prevent runtime suspend while 1091 * the start procedure runs. It's a bit confusing 1092 * that the UCODE_DOWN reference is taken, but it just 1093 * means "UCODE is not UP yet". ( TODO: rename this 1094 * reference). 1095 */ 1096 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); 1097 } 1098 ret = iwl_mvm_up(mvm); 1099 1100 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1101 /* Something went wrong - we need to finish some cleanup 1102 * that normally iwl_mvm_mac_restart_complete() below 1103 * would do. 1104 */ 1105 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1106 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1107 } 1108 1109 return ret; 1110 } 1111 1112 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1113 { 1114 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1115 int ret; 1116 1117 /* Some hw restart cleanups must not hold the mutex */ 1118 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1119 /* 1120 * Make sure we are out of d0i3. This is needed 1121 * to make sure the reference accounting is correct 1122 * (and there is no stale d0i3_exit_work). 1123 */ 1124 wait_event_timeout(mvm->d0i3_exit_waitq, 1125 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1126 &mvm->status), 1127 HZ); 1128 } 1129 1130 mutex_lock(&mvm->mutex); 1131 ret = __iwl_mvm_mac_start(mvm); 1132 mutex_unlock(&mvm->mutex); 1133 1134 return ret; 1135 } 1136 1137 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1138 { 1139 int ret; 1140 1141 mutex_lock(&mvm->mutex); 1142 1143 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1144 iwl_mvm_d0i3_enable_tx(mvm, NULL); 1145 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1146 if (ret) 1147 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1148 ret); 1149 1150 /* allow transport/FW low power modes */ 1151 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN); 1152 1153 /* 1154 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1155 * of packets the FW sent out, so we must reconnect. 1156 */ 1157 iwl_mvm_teardown_tdls_peers(mvm); 1158 1159 mutex_unlock(&mvm->mutex); 1160 } 1161 1162 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) 1163 { 1164 if (iwl_mvm_is_d0i3_supported(mvm) && 1165 iwl_mvm_enter_d0i3_on_suspend(mvm)) 1166 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq, 1167 !test_bit(IWL_MVM_STATUS_IN_D0I3, 1168 &mvm->status), 1169 HZ), 1170 "D0i3 exit on resume timed out\n"); 1171 } 1172 1173 static void 1174 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1175 enum ieee80211_reconfig_type reconfig_type) 1176 { 1177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1178 1179 switch (reconfig_type) { 1180 case IEEE80211_RECONFIG_TYPE_RESTART: 1181 iwl_mvm_restart_complete(mvm); 1182 break; 1183 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1184 iwl_mvm_resume_complete(mvm); 1185 break; 1186 } 1187 } 1188 1189 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1190 { 1191 lockdep_assert_held(&mvm->mutex); 1192 1193 /* firmware counters are obviously reset now, but we shouldn't 1194 * partially track so also clear the fw_reset_accu counters. 1195 */ 1196 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1197 1198 /* async_handlers_wk is now blocked */ 1199 1200 /* 1201 * The work item could be running or queued if the 1202 * ROC time event stops just as we get here. 1203 */ 1204 flush_work(&mvm->roc_done_wk); 1205 1206 iwl_mvm_stop_device(mvm); 1207 1208 iwl_mvm_async_handlers_purge(mvm); 1209 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1210 1211 /* the fw is stopped, the aux sta is dead: clean up driver state */ 1212 iwl_mvm_del_aux_sta(mvm); 1213 1214 /* 1215 * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete() 1216 * won't be called in this case). 1217 * But make sure to cleanup interfaces that have gone down before/during 1218 * HW restart was requested. 1219 */ 1220 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1221 ieee80211_iterate_interfaces(mvm->hw, 0, 1222 iwl_mvm_cleanup_iterator, mvm); 1223 1224 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1225 * make sure there's nothing left there and warn if any is found. 1226 */ 1227 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1228 int i; 1229 1230 for (i = 0; i < mvm->max_scans; i++) { 1231 if (WARN_ONCE(mvm->scan_uid_status[i], 1232 "UMAC scan UID %d status was not cleaned\n", 1233 i)) 1234 mvm->scan_uid_status[i] = 0; 1235 } 1236 } 1237 } 1238 1239 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1240 { 1241 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1242 1243 flush_work(&mvm->d0i3_exit_work); 1244 flush_work(&mvm->async_handlers_wk); 1245 flush_work(&mvm->add_stream_wk); 1246 cancel_delayed_work_sync(&mvm->fw_dump_wk); 1247 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1248 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1249 iwl_mvm_free_fw_dump_desc(mvm); 1250 1251 mutex_lock(&mvm->mutex); 1252 __iwl_mvm_mac_stop(mvm); 1253 mutex_unlock(&mvm->mutex); 1254 1255 /* 1256 * The worker might have been waiting for the mutex, let it run and 1257 * discover that its list is now empty. 1258 */ 1259 cancel_work_sync(&mvm->async_handlers_wk); 1260 } 1261 1262 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1263 { 1264 u16 i; 1265 1266 lockdep_assert_held(&mvm->mutex); 1267 1268 for (i = 0; i < NUM_PHY_CTX; i++) 1269 if (!mvm->phy_ctxts[i].ref) 1270 return &mvm->phy_ctxts[i]; 1271 1272 IWL_ERR(mvm, "No available PHY context\n"); 1273 return NULL; 1274 } 1275 1276 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1277 s16 tx_power) 1278 { 1279 struct iwl_dev_tx_power_cmd cmd = { 1280 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1281 .v3.mac_context_id = 1282 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1283 .v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1284 }; 1285 int len = sizeof(cmd); 1286 1287 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1288 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1289 1290 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1291 len = sizeof(cmd.v3); 1292 1293 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1294 } 1295 1296 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1297 struct ieee80211_vif *vif) 1298 { 1299 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1300 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1301 int ret; 1302 1303 mvmvif->mvm = mvm; 1304 1305 /* 1306 * make sure D0i3 exit is completed, otherwise a target access 1307 * during tx queue configuration could be done when still in 1308 * D0i3 state. 1309 */ 1310 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF); 1311 if (ret) 1312 return ret; 1313 1314 /* 1315 * Not much to do here. The stack will not allow interface 1316 * types or combinations that we didn't advertise, so we 1317 * don't really have to check the types. 1318 */ 1319 1320 mutex_lock(&mvm->mutex); 1321 1322 /* make sure that beacon statistics don't go backwards with FW reset */ 1323 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1324 mvmvif->beacon_stats.accu_num_beacons += 1325 mvmvif->beacon_stats.num_beacons; 1326 1327 /* Allocate resources for the MAC context, and add it to the fw */ 1328 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1329 if (ret) 1330 goto out_unlock; 1331 1332 /* Counting number of interfaces is needed for legacy PM */ 1333 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1334 mvm->vif_count++; 1335 1336 /* 1337 * The AP binding flow can be done only after the beacon 1338 * template is configured (which happens only in the mac80211 1339 * start_ap() flow), and adding the broadcast station can happen 1340 * only after the binding. 1341 * In addition, since modifying the MAC before adding a bcast 1342 * station is not allowed by the FW, delay the adding of MAC context to 1343 * the point where we can also add the bcast station. 1344 * In short: there's not much we can do at this point, other than 1345 * allocating resources :) 1346 */ 1347 if (vif->type == NL80211_IFTYPE_AP || 1348 vif->type == NL80211_IFTYPE_ADHOC) { 1349 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1350 if (ret) { 1351 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1352 goto out_release; 1353 } 1354 1355 if (iwl_mvm_is_dqa_supported(mvm)) { 1356 /* 1357 * Only queue for this station is the mcast queue, 1358 * which shouldn't be in TFD mask anyway 1359 */ 1360 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1361 0, vif->type, 1362 IWL_STA_MULTICAST); 1363 if (ret) 1364 goto out_release; 1365 } 1366 1367 iwl_mvm_vif_dbgfs_register(mvm, vif); 1368 goto out_unlock; 1369 } 1370 1371 mvmvif->features |= hw->netdev_features; 1372 1373 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1374 if (ret) 1375 goto out_release; 1376 1377 ret = iwl_mvm_power_update_mac(mvm); 1378 if (ret) 1379 goto out_remove_mac; 1380 1381 /* beacon filtering */ 1382 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1383 if (ret) 1384 goto out_remove_mac; 1385 1386 if (!mvm->bf_allowed_vif && 1387 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1388 mvm->bf_allowed_vif = mvmvif; 1389 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1390 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1391 } 1392 1393 /* 1394 * P2P_DEVICE interface does not have a channel context assigned to it, 1395 * so a dedicated PHY context is allocated to it and the corresponding 1396 * MAC context is bound to it at this stage. 1397 */ 1398 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1399 1400 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1401 if (!mvmvif->phy_ctxt) { 1402 ret = -ENOSPC; 1403 goto out_free_bf; 1404 } 1405 1406 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1407 ret = iwl_mvm_binding_add_vif(mvm, vif); 1408 if (ret) 1409 goto out_unref_phy; 1410 1411 ret = iwl_mvm_add_bcast_sta(mvm, vif); 1412 if (ret) 1413 goto out_unbind; 1414 1415 /* Save a pointer to p2p device vif, so it can later be used to 1416 * update the p2p device MAC when a GO is started/stopped */ 1417 mvm->p2p_device_vif = vif; 1418 } 1419 1420 iwl_mvm_vif_dbgfs_register(mvm, vif); 1421 goto out_unlock; 1422 1423 out_unbind: 1424 iwl_mvm_binding_remove_vif(mvm, vif); 1425 out_unref_phy: 1426 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1427 out_free_bf: 1428 if (mvm->bf_allowed_vif == mvmvif) { 1429 mvm->bf_allowed_vif = NULL; 1430 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1431 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1432 } 1433 out_remove_mac: 1434 mvmvif->phy_ctxt = NULL; 1435 iwl_mvm_mac_ctxt_remove(mvm, vif); 1436 out_release: 1437 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1438 mvm->vif_count--; 1439 1440 iwl_mvm_mac_ctxt_release(mvm, vif); 1441 out_unlock: 1442 mutex_unlock(&mvm->mutex); 1443 1444 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF); 1445 1446 return ret; 1447 } 1448 1449 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1450 struct ieee80211_vif *vif) 1451 { 1452 u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif); 1453 1454 if (tfd_msk) { 1455 /* 1456 * mac80211 first removes all the stations of the vif and 1457 * then removes the vif. When it removes a station it also 1458 * flushes the AMPDU session. So by now, all the AMPDU sessions 1459 * of all the stations of this vif are closed, and the queues 1460 * of these AMPDU sessions are properly closed. 1461 * We still need to take care of the shared queues of the vif. 1462 * Flush them here. 1463 */ 1464 mutex_lock(&mvm->mutex); 1465 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0); 1466 mutex_unlock(&mvm->mutex); 1467 1468 /* 1469 * There are transports that buffer a few frames in the host. 1470 * For these, the flush above isn't enough since while we were 1471 * flushing, the transport might have sent more frames to the 1472 * device. To solve this, wait here until the transport is 1473 * empty. Technically, this could have replaced the flush 1474 * above, but flush is much faster than draining. So flush 1475 * first, and drain to make sure we have no frames in the 1476 * transport anymore. 1477 * If a station still had frames on the shared queues, it is 1478 * already marked as draining, so to complete the draining, we 1479 * just need to wait until the transport is empty. 1480 */ 1481 iwl_trans_wait_tx_queues_empty(mvm->trans, tfd_msk); 1482 } 1483 1484 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1485 /* 1486 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1487 * We assume here that all the packets sent to the OFFCHANNEL 1488 * queue are sent in ROC session. 1489 */ 1490 flush_work(&mvm->roc_done_wk); 1491 } else { 1492 /* 1493 * By now, all the AC queues are empty. The AGG queues are 1494 * empty too. We already got all the Tx responses for all the 1495 * packets in the queues. The drain work can have been 1496 * triggered. Flush it. 1497 */ 1498 flush_work(&mvm->sta_drained_wk); 1499 } 1500 } 1501 1502 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1503 struct ieee80211_vif *vif) 1504 { 1505 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1506 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1507 1508 iwl_mvm_prepare_mac_removal(mvm, vif); 1509 1510 mutex_lock(&mvm->mutex); 1511 1512 if (mvm->bf_allowed_vif == mvmvif) { 1513 mvm->bf_allowed_vif = NULL; 1514 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1515 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1516 } 1517 1518 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1519 1520 /* 1521 * For AP/GO interface, the tear down of the resources allocated to the 1522 * interface is be handled as part of the stop_ap flow. 1523 */ 1524 if (vif->type == NL80211_IFTYPE_AP || 1525 vif->type == NL80211_IFTYPE_ADHOC) { 1526 #ifdef CONFIG_NL80211_TESTMODE 1527 if (vif == mvm->noa_vif) { 1528 mvm->noa_vif = NULL; 1529 mvm->noa_duration = 0; 1530 } 1531 #endif 1532 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1533 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1534 goto out_release; 1535 } 1536 1537 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1538 mvm->p2p_device_vif = NULL; 1539 iwl_mvm_rm_bcast_sta(mvm, vif); 1540 iwl_mvm_binding_remove_vif(mvm, vif); 1541 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1542 mvmvif->phy_ctxt = NULL; 1543 } 1544 1545 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1546 mvm->vif_count--; 1547 1548 iwl_mvm_power_update_mac(mvm); 1549 iwl_mvm_mac_ctxt_remove(mvm, vif); 1550 1551 out_release: 1552 iwl_mvm_mac_ctxt_release(mvm, vif); 1553 mutex_unlock(&mvm->mutex); 1554 } 1555 1556 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1557 { 1558 return 0; 1559 } 1560 1561 struct iwl_mvm_mc_iter_data { 1562 struct iwl_mvm *mvm; 1563 int port_id; 1564 }; 1565 1566 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1567 struct ieee80211_vif *vif) 1568 { 1569 struct iwl_mvm_mc_iter_data *data = _data; 1570 struct iwl_mvm *mvm = data->mvm; 1571 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1572 int ret, len; 1573 1574 /* if we don't have free ports, mcast frames will be dropped */ 1575 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1576 return; 1577 1578 if (vif->type != NL80211_IFTYPE_STATION || 1579 !vif->bss_conf.assoc) 1580 return; 1581 1582 cmd->port_id = data->port_id++; 1583 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1584 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1585 1586 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd); 1587 if (ret) 1588 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1589 } 1590 1591 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1592 { 1593 struct iwl_mvm_mc_iter_data iter_data = { 1594 .mvm = mvm, 1595 }; 1596 1597 lockdep_assert_held(&mvm->mutex); 1598 1599 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1600 return; 1601 1602 ieee80211_iterate_active_interfaces_atomic( 1603 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1604 iwl_mvm_mc_iface_iterator, &iter_data); 1605 } 1606 1607 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1608 struct netdev_hw_addr_list *mc_list) 1609 { 1610 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1611 struct iwl_mcast_filter_cmd *cmd; 1612 struct netdev_hw_addr *addr; 1613 int addr_count; 1614 bool pass_all; 1615 int len; 1616 1617 addr_count = netdev_hw_addr_list_count(mc_list); 1618 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1619 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1620 if (pass_all) 1621 addr_count = 0; 1622 1623 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1624 cmd = kzalloc(len, GFP_ATOMIC); 1625 if (!cmd) 1626 return 0; 1627 1628 if (pass_all) { 1629 cmd->pass_all = 1; 1630 return (u64)(unsigned long)cmd; 1631 } 1632 1633 netdev_hw_addr_list_for_each(addr, mc_list) { 1634 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1635 cmd->count, addr->addr); 1636 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1637 addr->addr, ETH_ALEN); 1638 cmd->count++; 1639 } 1640 1641 return (u64)(unsigned long)cmd; 1642 } 1643 1644 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1645 unsigned int changed_flags, 1646 unsigned int *total_flags, 1647 u64 multicast) 1648 { 1649 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1650 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1651 1652 mutex_lock(&mvm->mutex); 1653 1654 /* replace previous configuration */ 1655 kfree(mvm->mcast_filter_cmd); 1656 mvm->mcast_filter_cmd = cmd; 1657 1658 if (!cmd) 1659 goto out; 1660 1661 iwl_mvm_recalc_multicast(mvm); 1662 out: 1663 mutex_unlock(&mvm->mutex); 1664 *total_flags = 0; 1665 } 1666 1667 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1668 struct ieee80211_vif *vif, 1669 unsigned int filter_flags, 1670 unsigned int changed_flags) 1671 { 1672 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1673 1674 /* We support only filter for probe requests */ 1675 if (!(changed_flags & FIF_PROBE_REQ)) 1676 return; 1677 1678 /* Supported only for p2p client interfaces */ 1679 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1680 !vif->p2p) 1681 return; 1682 1683 mutex_lock(&mvm->mutex); 1684 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1685 mutex_unlock(&mvm->mutex); 1686 } 1687 1688 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1689 struct iwl_bcast_iter_data { 1690 struct iwl_mvm *mvm; 1691 struct iwl_bcast_filter_cmd *cmd; 1692 u8 current_filter; 1693 }; 1694 1695 static void 1696 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1697 const struct iwl_fw_bcast_filter *in_filter, 1698 struct iwl_fw_bcast_filter *out_filter) 1699 { 1700 struct iwl_fw_bcast_filter_attr *attr; 1701 int i; 1702 1703 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1704 1705 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1706 attr = &out_filter->attrs[i]; 1707 1708 if (!attr->mask) 1709 break; 1710 1711 switch (attr->reserved1) { 1712 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1713 if (vif->bss_conf.arp_addr_cnt != 1) { 1714 attr->mask = 0; 1715 continue; 1716 } 1717 1718 attr->val = vif->bss_conf.arp_addr_list[0]; 1719 break; 1720 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1721 attr->val = *(__be32 *)&vif->addr[2]; 1722 break; 1723 default: 1724 break; 1725 } 1726 attr->reserved1 = 0; 1727 out_filter->num_attrs++; 1728 } 1729 } 1730 1731 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1732 struct ieee80211_vif *vif) 1733 { 1734 struct iwl_bcast_iter_data *data = _data; 1735 struct iwl_mvm *mvm = data->mvm; 1736 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1737 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1738 struct iwl_fw_bcast_mac *bcast_mac; 1739 int i; 1740 1741 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1742 return; 1743 1744 bcast_mac = &cmd->macs[mvmvif->id]; 1745 1746 /* 1747 * enable filtering only for associated stations, but not for P2P 1748 * Clients 1749 */ 1750 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1751 !vif->bss_conf.assoc) 1752 return; 1753 1754 bcast_mac->default_discard = 1; 1755 1756 /* copy all configured filters */ 1757 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1758 /* 1759 * Make sure we don't exceed our filters limit. 1760 * if there is still a valid filter to be configured, 1761 * be on the safe side and just allow bcast for this mac. 1762 */ 1763 if (WARN_ON_ONCE(data->current_filter >= 1764 ARRAY_SIZE(cmd->filters))) { 1765 bcast_mac->default_discard = 0; 1766 bcast_mac->attached_filters = 0; 1767 break; 1768 } 1769 1770 iwl_mvm_set_bcast_filter(vif, 1771 &mvm->bcast_filters[i], 1772 &cmd->filters[data->current_filter]); 1773 1774 /* skip current filter if it contains no attributes */ 1775 if (!cmd->filters[data->current_filter].num_attrs) 1776 continue; 1777 1778 /* attach the filter to current mac */ 1779 bcast_mac->attached_filters |= 1780 cpu_to_le16(BIT(data->current_filter)); 1781 1782 data->current_filter++; 1783 } 1784 } 1785 1786 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1787 struct iwl_bcast_filter_cmd *cmd) 1788 { 1789 struct iwl_bcast_iter_data iter_data = { 1790 .mvm = mvm, 1791 .cmd = cmd, 1792 }; 1793 1794 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1795 return false; 1796 1797 memset(cmd, 0, sizeof(*cmd)); 1798 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1799 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1800 1801 #ifdef CONFIG_IWLWIFI_DEBUGFS 1802 /* use debugfs filters/macs if override is configured */ 1803 if (mvm->dbgfs_bcast_filtering.override) { 1804 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1805 sizeof(cmd->filters)); 1806 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1807 sizeof(cmd->macs)); 1808 return true; 1809 } 1810 #endif 1811 1812 /* if no filters are configured, do nothing */ 1813 if (!mvm->bcast_filters) 1814 return false; 1815 1816 /* configure and attach these filters for each associated sta vif */ 1817 ieee80211_iterate_active_interfaces( 1818 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1819 iwl_mvm_bcast_filter_iterator, &iter_data); 1820 1821 return true; 1822 } 1823 1824 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1825 { 1826 struct iwl_bcast_filter_cmd cmd; 1827 1828 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1829 return 0; 1830 1831 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1832 return 0; 1833 1834 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1835 sizeof(cmd), &cmd); 1836 } 1837 #else 1838 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1839 { 1840 return 0; 1841 } 1842 #endif 1843 1844 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1845 struct ieee80211_vif *vif) 1846 { 1847 struct iwl_mu_group_mgmt_cmd cmd = {}; 1848 1849 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1850 WLAN_MEMBERSHIP_LEN); 1851 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1852 WLAN_USER_POSITION_LEN); 1853 1854 return iwl_mvm_send_cmd_pdu(mvm, 1855 WIDE_ID(DATA_PATH_GROUP, 1856 UPDATE_MU_GROUPS_CMD), 1857 0, sizeof(cmd), &cmd); 1858 } 1859 1860 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1861 struct ieee80211_vif *vif) 1862 { 1863 if (vif->mu_mimo_owner) { 1864 struct iwl_mu_group_mgmt_notif *notif = _data; 1865 1866 /* 1867 * MU-MIMO Group Id action frame is little endian. We treat 1868 * the data received from firmware as if it came from the 1869 * action frame, so no conversion is needed. 1870 */ 1871 ieee80211_update_mu_groups(vif, 1872 (u8 *)¬if->membership_status, 1873 (u8 *)¬if->user_position); 1874 } 1875 } 1876 1877 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1878 struct iwl_rx_cmd_buffer *rxb) 1879 { 1880 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1881 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1882 1883 ieee80211_iterate_active_interfaces_atomic( 1884 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1885 iwl_mvm_mu_mimo_iface_iterator, notif); 1886 } 1887 1888 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 1889 struct ieee80211_vif *vif, 1890 struct ieee80211_bss_conf *bss_conf, 1891 u32 changes) 1892 { 1893 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1894 int ret; 1895 1896 /* 1897 * Re-calculate the tsf id, as the master-slave relations depend on the 1898 * beacon interval, which was not known when the station interface was 1899 * added. 1900 */ 1901 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) 1902 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 1903 1904 if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc && 1905 mvmvif->lqm_active) 1906 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT, 1907 0, 0); 1908 1909 /* 1910 * If we're not associated yet, take the (new) BSSID before associating 1911 * so the firmware knows. If we're already associated, then use the old 1912 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 1913 * branch for disassociation below. 1914 */ 1915 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 1916 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1917 1918 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 1919 if (ret) 1920 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 1921 1922 /* after sending it once, adopt mac80211 data */ 1923 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 1924 mvmvif->associated = bss_conf->assoc; 1925 1926 if (changes & BSS_CHANGED_ASSOC) { 1927 if (bss_conf->assoc) { 1928 /* clear statistics to get clean beacon counter */ 1929 iwl_mvm_request_statistics(mvm, true); 1930 memset(&mvmvif->beacon_stats, 0, 1931 sizeof(mvmvif->beacon_stats)); 1932 1933 /* add quota for this interface */ 1934 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1935 if (ret) { 1936 IWL_ERR(mvm, "failed to update quotas\n"); 1937 return; 1938 } 1939 1940 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 1941 &mvm->status)) { 1942 /* 1943 * If we're restarting then the firmware will 1944 * obviously have lost synchronisation with 1945 * the AP. It will attempt to synchronise by 1946 * itself, but we can make it more reliable by 1947 * scheduling a session protection time event. 1948 * 1949 * The firmware needs to receive a beacon to 1950 * catch up with synchronisation, use 110% of 1951 * the beacon interval. 1952 * 1953 * Set a large maximum delay to allow for more 1954 * than a single interface. 1955 */ 1956 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 1957 iwl_mvm_protect_session(mvm, vif, dur, dur, 1958 5 * dur, false); 1959 } 1960 1961 iwl_mvm_sf_update(mvm, vif, false); 1962 iwl_mvm_power_vif_assoc(mvm, vif); 1963 if (vif->p2p) { 1964 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT); 1965 iwl_mvm_update_smps(mvm, vif, 1966 IWL_MVM_SMPS_REQ_PROT, 1967 IEEE80211_SMPS_DYNAMIC); 1968 } 1969 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 1970 /* 1971 * If update fails - SF might be running in associated 1972 * mode while disassociated - which is forbidden. 1973 */ 1974 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false), 1975 "Failed to update SF upon disassociation\n"); 1976 1977 /* remove AP station now that the MAC is unassoc */ 1978 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id); 1979 if (ret) 1980 IWL_ERR(mvm, "failed to remove AP station\n"); 1981 1982 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id) 1983 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1984 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1985 /* remove quota for this interface */ 1986 ret = iwl_mvm_update_quotas(mvm, false, NULL); 1987 if (ret) 1988 IWL_ERR(mvm, "failed to update quotas\n"); 1989 1990 if (vif->p2p) 1991 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT); 1992 1993 /* this will take the cleared BSSID from bss_conf */ 1994 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1995 if (ret) 1996 IWL_ERR(mvm, 1997 "failed to update MAC %pM (clear after unassoc)\n", 1998 vif->addr); 1999 } 2000 2001 /* 2002 * The firmware tracks the MU-MIMO group on its own. 2003 * However, on HW restart we should restore this data. 2004 */ 2005 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2006 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2007 ret = iwl_mvm_update_mu_groups(mvm, vif); 2008 if (ret) 2009 IWL_ERR(mvm, 2010 "failed to update VHT MU_MIMO groups\n"); 2011 } 2012 2013 iwl_mvm_recalc_multicast(mvm); 2014 iwl_mvm_configure_bcast_filter(mvm); 2015 2016 /* reset rssi values */ 2017 mvmvif->bf_data.ave_beacon_signal = 0; 2018 2019 iwl_mvm_bt_coex_vif_change(mvm); 2020 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2021 IEEE80211_SMPS_AUTOMATIC); 2022 if (fw_has_capa(&mvm->fw->ucode_capa, 2023 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2024 iwl_mvm_config_scan(mvm); 2025 } 2026 2027 if (changes & BSS_CHANGED_BEACON_INFO) { 2028 /* 2029 * We received a beacon from the associated AP so 2030 * remove the session protection. 2031 */ 2032 iwl_mvm_remove_time_event(mvm, mvmvif, 2033 &mvmvif->time_event_data); 2034 2035 iwl_mvm_sf_update(mvm, vif, false); 2036 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2037 } 2038 2039 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2040 /* 2041 * Send power command on every beacon change, 2042 * because we may have not enabled beacon abort yet. 2043 */ 2044 BSS_CHANGED_BEACON_INFO)) { 2045 ret = iwl_mvm_power_update_mac(mvm); 2046 if (ret) 2047 IWL_ERR(mvm, "failed to update power mode\n"); 2048 } 2049 2050 if (changes & BSS_CHANGED_TXPOWER) { 2051 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2052 bss_conf->txpower); 2053 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2054 } 2055 2056 if (changes & BSS_CHANGED_CQM) { 2057 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2058 /* reset cqm events tracking */ 2059 mvmvif->bf_data.last_cqm_event = 0; 2060 if (mvmvif->bf_data.bf_enabled) { 2061 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2062 if (ret) 2063 IWL_ERR(mvm, 2064 "failed to update CQM thresholds\n"); 2065 } 2066 } 2067 2068 if (changes & BSS_CHANGED_ARP_FILTER) { 2069 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2070 iwl_mvm_configure_bcast_filter(mvm); 2071 } 2072 } 2073 2074 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2075 struct ieee80211_vif *vif) 2076 { 2077 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2078 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2079 int ret; 2080 2081 /* 2082 * iwl_mvm_mac_ctxt_add() might read directly from the device 2083 * (the system time), so make sure it is available. 2084 */ 2085 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP); 2086 if (ret) 2087 return ret; 2088 2089 mutex_lock(&mvm->mutex); 2090 2091 /* Send the beacon template */ 2092 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2093 if (ret) 2094 goto out_unlock; 2095 2096 /* 2097 * Re-calculate the tsf id, as the master-slave relations depend on the 2098 * beacon interval, which was not known when the AP interface was added. 2099 */ 2100 if (vif->type == NL80211_IFTYPE_AP) 2101 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2102 2103 mvmvif->ap_assoc_sta_count = 0; 2104 2105 /* Add the mac context */ 2106 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2107 if (ret) 2108 goto out_unlock; 2109 2110 /* Perform the binding */ 2111 ret = iwl_mvm_binding_add_vif(mvm, vif); 2112 if (ret) 2113 goto out_remove; 2114 2115 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2116 if (ret) 2117 goto out_unbind; 2118 2119 /* Send the bcast station. At this stage the TBTT and DTIM time events 2120 * are added and applied to the scheduler */ 2121 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2122 if (ret) 2123 goto out_rm_mcast; 2124 2125 /* must be set before quota calculations */ 2126 mvmvif->ap_ibss_active = true; 2127 2128 /* power updated needs to be done before quotas */ 2129 iwl_mvm_power_update_mac(mvm); 2130 2131 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2132 if (ret) 2133 goto out_quota_failed; 2134 2135 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2136 if (vif->p2p && mvm->p2p_device_vif) 2137 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2138 2139 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS); 2140 2141 iwl_mvm_bt_coex_vif_change(mvm); 2142 2143 /* we don't support TDLS during DCM */ 2144 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2145 iwl_mvm_teardown_tdls_peers(mvm); 2146 2147 goto out_unlock; 2148 2149 out_quota_failed: 2150 iwl_mvm_power_update_mac(mvm); 2151 mvmvif->ap_ibss_active = false; 2152 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2153 out_rm_mcast: 2154 iwl_mvm_rm_mcast_sta(mvm, vif); 2155 out_unbind: 2156 iwl_mvm_binding_remove_vif(mvm, vif); 2157 out_remove: 2158 iwl_mvm_mac_ctxt_remove(mvm, vif); 2159 out_unlock: 2160 mutex_unlock(&mvm->mutex); 2161 iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP); 2162 return ret; 2163 } 2164 2165 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2166 struct ieee80211_vif *vif) 2167 { 2168 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2169 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2170 2171 iwl_mvm_prepare_mac_removal(mvm, vif); 2172 2173 mutex_lock(&mvm->mutex); 2174 2175 /* Handle AP stop while in CSA */ 2176 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2177 iwl_mvm_remove_time_event(mvm, mvmvif, 2178 &mvmvif->time_event_data); 2179 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2180 mvmvif->csa_countdown = false; 2181 } 2182 2183 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2184 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2185 mvm->csa_tx_block_bcn_timeout = 0; 2186 } 2187 2188 mvmvif->ap_ibss_active = false; 2189 mvm->ap_last_beacon_gp2 = 0; 2190 2191 iwl_mvm_bt_coex_vif_change(mvm); 2192 2193 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS); 2194 2195 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2196 if (vif->p2p && mvm->p2p_device_vif) 2197 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2198 2199 iwl_mvm_update_quotas(mvm, false, NULL); 2200 2201 /* 2202 * This is not very nice, but the simplest: 2203 * For older FWs removing the mcast sta before the bcast station may 2204 * cause assert 0x2b00. 2205 * This is fixed in later FW (which will stop beaconing when removing 2206 * bcast station). 2207 * So make the order of removal depend on the TLV 2208 */ 2209 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2210 iwl_mvm_rm_mcast_sta(mvm, vif); 2211 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2212 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2213 iwl_mvm_rm_mcast_sta(mvm, vif); 2214 iwl_mvm_binding_remove_vif(mvm, vif); 2215 2216 iwl_mvm_power_update_mac(mvm); 2217 2218 iwl_mvm_mac_ctxt_remove(mvm, vif); 2219 2220 mutex_unlock(&mvm->mutex); 2221 } 2222 2223 static void 2224 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2225 struct ieee80211_vif *vif, 2226 struct ieee80211_bss_conf *bss_conf, 2227 u32 changes) 2228 { 2229 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2230 2231 /* Changes will be applied when the AP/IBSS is started */ 2232 if (!mvmvif->ap_ibss_active) 2233 return; 2234 2235 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2236 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2237 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2238 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2239 2240 /* Need to send a new beacon template to the FW */ 2241 if (changes & BSS_CHANGED_BEACON && 2242 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2243 IWL_WARN(mvm, "Failed updating beacon data\n"); 2244 2245 if (changes & BSS_CHANGED_TXPOWER) { 2246 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2247 bss_conf->txpower); 2248 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2249 } 2250 } 2251 2252 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2253 struct ieee80211_vif *vif, 2254 struct ieee80211_bss_conf *bss_conf, 2255 u32 changes) 2256 { 2257 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2258 2259 /* 2260 * iwl_mvm_bss_info_changed_station() might call 2261 * iwl_mvm_protect_session(), which reads directly from 2262 * the device (the system time), so make sure it is available. 2263 */ 2264 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED)) 2265 return; 2266 2267 mutex_lock(&mvm->mutex); 2268 2269 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2270 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2271 2272 switch (vif->type) { 2273 case NL80211_IFTYPE_STATION: 2274 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2275 break; 2276 case NL80211_IFTYPE_AP: 2277 case NL80211_IFTYPE_ADHOC: 2278 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2279 break; 2280 case NL80211_IFTYPE_MONITOR: 2281 if (changes & BSS_CHANGED_MU_GROUPS) 2282 iwl_mvm_update_mu_groups(mvm, vif); 2283 break; 2284 default: 2285 /* shouldn't happen */ 2286 WARN_ON_ONCE(1); 2287 } 2288 2289 mutex_unlock(&mvm->mutex); 2290 iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED); 2291 } 2292 2293 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2294 struct ieee80211_vif *vif, 2295 struct ieee80211_scan_request *hw_req) 2296 { 2297 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2298 int ret; 2299 2300 if (hw_req->req.n_channels == 0 || 2301 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2302 return -EINVAL; 2303 2304 mutex_lock(&mvm->mutex); 2305 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2306 mutex_unlock(&mvm->mutex); 2307 2308 return ret; 2309 } 2310 2311 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2312 struct ieee80211_vif *vif) 2313 { 2314 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2315 2316 mutex_lock(&mvm->mutex); 2317 2318 /* Due to a race condition, it's possible that mac80211 asks 2319 * us to stop a hw_scan when it's already stopped. This can 2320 * happen, for instance, if we stopped the scan ourselves, 2321 * called ieee80211_scan_completed() and the userspace called 2322 * cancel scan scan before ieee80211_scan_work() could run. 2323 * To handle that, simply return if the scan is not running. 2324 */ 2325 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2326 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2327 2328 mutex_unlock(&mvm->mutex); 2329 } 2330 2331 static void 2332 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2333 struct ieee80211_sta *sta, u16 tids, 2334 int num_frames, 2335 enum ieee80211_frame_release_type reason, 2336 bool more_data) 2337 { 2338 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2339 2340 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2341 2342 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2343 tids, more_data, false); 2344 } 2345 2346 static void 2347 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2348 struct ieee80211_sta *sta, u16 tids, 2349 int num_frames, 2350 enum ieee80211_frame_release_type reason, 2351 bool more_data) 2352 { 2353 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2354 2355 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2356 2357 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2358 tids, more_data, true); 2359 } 2360 2361 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2362 enum sta_notify_cmd cmd, 2363 struct ieee80211_sta *sta) 2364 { 2365 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2366 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2367 unsigned long txqs = 0, tids = 0; 2368 int tid; 2369 2370 spin_lock_bh(&mvmsta->lock); 2371 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2372 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2373 2374 if (!iwl_mvm_is_dqa_supported(mvm) && 2375 tid_data->state != IWL_AGG_ON && 2376 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA) 2377 continue; 2378 2379 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2380 continue; 2381 2382 __set_bit(tid_data->txq_id, &txqs); 2383 2384 if (iwl_mvm_tid_queued(tid_data) == 0) 2385 continue; 2386 2387 __set_bit(tid, &tids); 2388 } 2389 2390 switch (cmd) { 2391 case STA_NOTIFY_SLEEP: 2392 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0) 2393 ieee80211_sta_block_awake(hw, sta, true); 2394 2395 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2396 ieee80211_sta_set_buffered(sta, tid, true); 2397 2398 if (txqs) 2399 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2400 /* 2401 * The fw updates the STA to be asleep. Tx packets on the Tx 2402 * queues to this station will not be transmitted. The fw will 2403 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2404 */ 2405 break; 2406 case STA_NOTIFY_AWAKE: 2407 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2408 break; 2409 2410 if (txqs) 2411 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2412 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2413 break; 2414 default: 2415 break; 2416 } 2417 spin_unlock_bh(&mvmsta->lock); 2418 } 2419 2420 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2421 struct ieee80211_vif *vif, 2422 enum sta_notify_cmd cmd, 2423 struct ieee80211_sta *sta) 2424 { 2425 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2426 } 2427 2428 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2429 { 2430 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2431 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2432 struct ieee80211_sta *sta; 2433 struct iwl_mvm_sta *mvmsta; 2434 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2435 2436 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2437 return; 2438 2439 rcu_read_lock(); 2440 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2441 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2442 rcu_read_unlock(); 2443 return; 2444 } 2445 2446 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2447 2448 if (!mvmsta->vif || 2449 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2450 rcu_read_unlock(); 2451 return; 2452 } 2453 2454 if (mvmsta->sleeping != sleeping) { 2455 mvmsta->sleeping = sleeping; 2456 __iwl_mvm_mac_sta_notify(mvm->hw, 2457 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2458 sta); 2459 ieee80211_sta_ps_transition(sta, sleeping); 2460 } 2461 2462 if (sleeping) { 2463 switch (notif->type) { 2464 case IWL_MVM_PM_EVENT_AWAKE: 2465 case IWL_MVM_PM_EVENT_ASLEEP: 2466 break; 2467 case IWL_MVM_PM_EVENT_UAPSD: 2468 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2469 break; 2470 case IWL_MVM_PM_EVENT_PS_POLL: 2471 ieee80211_sta_pspoll(sta); 2472 break; 2473 default: 2474 break; 2475 } 2476 } 2477 2478 rcu_read_unlock(); 2479 } 2480 2481 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2482 struct ieee80211_vif *vif, 2483 struct ieee80211_sta *sta) 2484 { 2485 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2486 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2487 2488 /* 2489 * This is called before mac80211 does RCU synchronisation, 2490 * so here we already invalidate our internal RCU-protected 2491 * station pointer. The rest of the code will thus no longer 2492 * be able to find the station this way, and we don't rely 2493 * on further RCU synchronisation after the sta_state() 2494 * callback deleted the station. 2495 */ 2496 mutex_lock(&mvm->mutex); 2497 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2498 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2499 ERR_PTR(-ENOENT)); 2500 2501 mutex_unlock(&mvm->mutex); 2502 } 2503 2504 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2505 const u8 *bssid) 2506 { 2507 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2508 return; 2509 2510 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2511 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2512 return; 2513 } 2514 2515 if (!vif->p2p && 2516 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2517 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2518 return; 2519 } 2520 2521 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2522 } 2523 2524 static void 2525 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2526 struct ieee80211_vif *vif, u8 *peer_addr, 2527 enum nl80211_tdls_operation action) 2528 { 2529 struct iwl_fw_dbg_trigger_tlv *trig; 2530 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2531 2532 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS)) 2533 return; 2534 2535 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS); 2536 tdls_trig = (void *)trig->data; 2537 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 2538 return; 2539 2540 if (!(tdls_trig->action_bitmap & BIT(action))) 2541 return; 2542 2543 if (tdls_trig->peer_mode && 2544 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2545 return; 2546 2547 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 2548 "TDLS event occurred, peer %pM, action %d", 2549 peer_addr, action); 2550 } 2551 2552 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm, 2553 struct iwl_mvm_sta *mvm_sta) 2554 { 2555 struct iwl_mvm_tid_data *tid_data; 2556 struct sk_buff *skb; 2557 int i; 2558 2559 spin_lock_bh(&mvm_sta->lock); 2560 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 2561 tid_data = &mvm_sta->tid_data[i]; 2562 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) 2563 ieee80211_free_txskb(mvm->hw, skb); 2564 } 2565 spin_unlock_bh(&mvm_sta->lock); 2566 } 2567 2568 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 2569 struct ieee80211_vif *vif, 2570 struct ieee80211_sta *sta, 2571 enum ieee80211_sta_state old_state, 2572 enum ieee80211_sta_state new_state) 2573 { 2574 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2575 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2576 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2577 int ret; 2578 2579 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 2580 sta->addr, old_state, new_state); 2581 2582 /* this would be a mac80211 bug ... but don't crash */ 2583 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 2584 return -EINVAL; 2585 2586 /* if a STA is being removed, reuse its ID */ 2587 flush_work(&mvm->sta_drained_wk); 2588 2589 /* 2590 * If we are in a STA removal flow and in DQA mode: 2591 * 2592 * This is after the sync_rcu part, so the queues have already been 2593 * flushed. No more TXs on their way in mac80211's path, and no more in 2594 * the queues. 2595 * Also, we won't be getting any new TX frames for this station. 2596 * What we might have are deferred TX frames that need to be taken care 2597 * of. 2598 * 2599 * Drop any still-queued deferred-frame before removing the STA, and 2600 * make sure the worker is no longer handling frames for this STA. 2601 */ 2602 if (old_state == IEEE80211_STA_NONE && 2603 new_state == IEEE80211_STA_NOTEXIST && 2604 iwl_mvm_is_dqa_supported(mvm)) { 2605 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta); 2606 flush_work(&mvm->add_stream_wk); 2607 2608 /* 2609 * No need to make sure deferred TX indication is off since the 2610 * worker will already remove it if it was on 2611 */ 2612 } 2613 2614 mutex_lock(&mvm->mutex); 2615 /* track whether or not the station is associated */ 2616 mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC; 2617 2618 if (old_state == IEEE80211_STA_NOTEXIST && 2619 new_state == IEEE80211_STA_NONE) { 2620 /* 2621 * Firmware bug - it'll crash if the beacon interval is less 2622 * than 16. We can't avoid connecting at all, so refuse the 2623 * station state change, this will cause mac80211 to abandon 2624 * attempts to connect to this AP, and eventually wpa_s will 2625 * blacklist the AP... 2626 */ 2627 if (vif->type == NL80211_IFTYPE_STATION && 2628 vif->bss_conf.beacon_int < 16) { 2629 IWL_ERR(mvm, 2630 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 2631 sta->addr, vif->bss_conf.beacon_int); 2632 ret = -EINVAL; 2633 goto out_unlock; 2634 } 2635 2636 if (sta->tdls && 2637 (vif->p2p || 2638 iwl_mvm_tdls_sta_count(mvm, NULL) == 2639 IWL_MVM_TDLS_STA_COUNT || 2640 iwl_mvm_phy_ctx_count(mvm) > 1)) { 2641 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 2642 ret = -EBUSY; 2643 goto out_unlock; 2644 } 2645 2646 ret = iwl_mvm_add_sta(mvm, vif, sta); 2647 if (sta->tdls && ret == 0) { 2648 iwl_mvm_recalc_tdls_state(mvm, vif, true); 2649 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2650 NL80211_TDLS_SETUP); 2651 } 2652 } else if (old_state == IEEE80211_STA_NONE && 2653 new_state == IEEE80211_STA_AUTH) { 2654 /* 2655 * EBS may be disabled due to previous failures reported by FW. 2656 * Reset EBS status here assuming environment has been changed. 2657 */ 2658 mvm->last_ebs_successful = true; 2659 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 2660 ret = 0; 2661 } else if (old_state == IEEE80211_STA_AUTH && 2662 new_state == IEEE80211_STA_ASSOC) { 2663 if (vif->type == NL80211_IFTYPE_AP) { 2664 mvmvif->ap_assoc_sta_count++; 2665 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2666 } 2667 2668 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 2669 true); 2670 ret = iwl_mvm_update_sta(mvm, vif, sta); 2671 } else if (old_state == IEEE80211_STA_ASSOC && 2672 new_state == IEEE80211_STA_AUTHORIZED) { 2673 2674 /* we don't support TDLS during DCM */ 2675 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2676 iwl_mvm_teardown_tdls_peers(mvm); 2677 2678 if (sta->tdls) 2679 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2680 NL80211_TDLS_ENABLE_LINK); 2681 2682 /* enable beacon filtering */ 2683 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2684 ret = 0; 2685 } else if (old_state == IEEE80211_STA_AUTHORIZED && 2686 new_state == IEEE80211_STA_ASSOC) { 2687 /* disable beacon filtering */ 2688 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0)); 2689 ret = 0; 2690 } else if (old_state == IEEE80211_STA_ASSOC && 2691 new_state == IEEE80211_STA_AUTH) { 2692 if (vif->type == NL80211_IFTYPE_AP) { 2693 mvmvif->ap_assoc_sta_count--; 2694 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2695 } 2696 ret = 0; 2697 } else if (old_state == IEEE80211_STA_AUTH && 2698 new_state == IEEE80211_STA_NONE) { 2699 ret = 0; 2700 } else if (old_state == IEEE80211_STA_NONE && 2701 new_state == IEEE80211_STA_NOTEXIST) { 2702 ret = iwl_mvm_rm_sta(mvm, vif, sta); 2703 if (sta->tdls) { 2704 iwl_mvm_recalc_tdls_state(mvm, vif, false); 2705 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 2706 NL80211_TDLS_DISABLE_LINK); 2707 } 2708 } else { 2709 ret = -EIO; 2710 } 2711 out_unlock: 2712 mutex_unlock(&mvm->mutex); 2713 2714 if (sta->tdls && ret == 0) { 2715 if (old_state == IEEE80211_STA_NOTEXIST && 2716 new_state == IEEE80211_STA_NONE) 2717 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2718 else if (old_state == IEEE80211_STA_NONE && 2719 new_state == IEEE80211_STA_NOTEXIST) 2720 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 2721 } 2722 2723 return ret; 2724 } 2725 2726 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 2727 { 2728 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2729 2730 mvm->rts_threshold = value; 2731 2732 return 0; 2733 } 2734 2735 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 2736 struct ieee80211_vif *vif, 2737 struct ieee80211_sta *sta, u32 changed) 2738 { 2739 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2740 2741 if (vif->type == NL80211_IFTYPE_STATION && 2742 changed & IEEE80211_RC_NSS_CHANGED) 2743 iwl_mvm_sf_update(mvm, vif, false); 2744 } 2745 2746 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 2747 struct ieee80211_vif *vif, u16 ac, 2748 const struct ieee80211_tx_queue_params *params) 2749 { 2750 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2752 2753 mvmvif->queue_params[ac] = *params; 2754 2755 /* 2756 * No need to update right away, we'll get BSS_CHANGED_QOS 2757 * The exception is P2P_DEVICE interface which needs immediate update. 2758 */ 2759 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2760 int ret; 2761 2762 mutex_lock(&mvm->mutex); 2763 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2764 mutex_unlock(&mvm->mutex); 2765 return ret; 2766 } 2767 return 0; 2768 } 2769 2770 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 2771 struct ieee80211_vif *vif) 2772 { 2773 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2774 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 2775 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 2776 2777 if (WARN_ON_ONCE(vif->bss_conf.assoc)) 2778 return; 2779 2780 /* 2781 * iwl_mvm_protect_session() reads directly from the device 2782 * (the system time), so make sure it is available. 2783 */ 2784 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX)) 2785 return; 2786 2787 mutex_lock(&mvm->mutex); 2788 /* Try really hard to protect the session and hear a beacon */ 2789 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); 2790 mutex_unlock(&mvm->mutex); 2791 2792 iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX); 2793 } 2794 2795 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 2796 struct ieee80211_vif *vif, 2797 struct cfg80211_sched_scan_request *req, 2798 struct ieee80211_scan_ies *ies) 2799 { 2800 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2801 2802 int ret; 2803 2804 mutex_lock(&mvm->mutex); 2805 2806 if (!vif->bss_conf.idle) { 2807 ret = -EBUSY; 2808 goto out; 2809 } 2810 2811 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 2812 2813 out: 2814 mutex_unlock(&mvm->mutex); 2815 return ret; 2816 } 2817 2818 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 2819 struct ieee80211_vif *vif) 2820 { 2821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2822 int ret; 2823 2824 mutex_lock(&mvm->mutex); 2825 2826 /* Due to a race condition, it's possible that mac80211 asks 2827 * us to stop a sched_scan when it's already stopped. This 2828 * can happen, for instance, if we stopped the scan ourselves, 2829 * called ieee80211_sched_scan_stopped() and the userspace called 2830 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 2831 * could run. To handle this, simply return if the scan is 2832 * not running. 2833 */ 2834 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 2835 mutex_unlock(&mvm->mutex); 2836 return 0; 2837 } 2838 2839 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 2840 mutex_unlock(&mvm->mutex); 2841 iwl_mvm_wait_for_async_handlers(mvm); 2842 2843 return ret; 2844 } 2845 2846 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 2847 enum set_key_cmd cmd, 2848 struct ieee80211_vif *vif, 2849 struct ieee80211_sta *sta, 2850 struct ieee80211_key_conf *key) 2851 { 2852 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2853 struct iwl_mvm_sta *mvmsta; 2854 struct iwl_mvm_key_pn *ptk_pn; 2855 int keyidx = key->keyidx; 2856 int ret; 2857 u8 key_offset; 2858 2859 if (iwlwifi_mod_params.sw_crypto) { 2860 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n"); 2861 return -EOPNOTSUPP; 2862 } 2863 2864 switch (key->cipher) { 2865 case WLAN_CIPHER_SUITE_TKIP: 2866 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 2867 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2868 break; 2869 case WLAN_CIPHER_SUITE_CCMP: 2870 case WLAN_CIPHER_SUITE_GCMP: 2871 case WLAN_CIPHER_SUITE_GCMP_256: 2872 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2873 break; 2874 case WLAN_CIPHER_SUITE_AES_CMAC: 2875 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 2876 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 2877 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 2878 break; 2879 case WLAN_CIPHER_SUITE_WEP40: 2880 case WLAN_CIPHER_SUITE_WEP104: 2881 /* For non-client mode, only use WEP keys for TX as we probably 2882 * don't have a station yet anyway and would then have to keep 2883 * track of the keys, linking them to each of the clients/peers 2884 * as they appear. For now, don't do that, for performance WEP 2885 * offload doesn't really matter much, but we need it for some 2886 * other offload features in client mode. 2887 */ 2888 if (vif->type != NL80211_IFTYPE_STATION) 2889 return 0; 2890 break; 2891 default: 2892 /* currently FW supports only one optional cipher scheme */ 2893 if (hw->n_cipher_schemes && 2894 hw->cipher_schemes->cipher == key->cipher) 2895 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 2896 else 2897 return -EOPNOTSUPP; 2898 } 2899 2900 mutex_lock(&mvm->mutex); 2901 2902 switch (cmd) { 2903 case SET_KEY: 2904 if ((vif->type == NL80211_IFTYPE_ADHOC || 2905 vif->type == NL80211_IFTYPE_AP) && !sta) { 2906 /* 2907 * GTK on AP interface is a TX-only key, return 0; 2908 * on IBSS they're per-station and because we're lazy 2909 * we don't support them for RX, so do the same. 2910 * CMAC/GMAC in AP/IBSS modes must be done in software. 2911 */ 2912 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 2913 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 2914 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 2915 ret = -EOPNOTSUPP; 2916 else 2917 ret = 0; 2918 key->hw_key_idx = STA_KEY_IDX_INVALID; 2919 break; 2920 } 2921 2922 /* During FW restart, in order to restore the state as it was, 2923 * don't try to reprogram keys we previously failed for. 2924 */ 2925 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2926 key->hw_key_idx == STA_KEY_IDX_INVALID) { 2927 IWL_DEBUG_MAC80211(mvm, 2928 "skip invalid idx key programming during restart\n"); 2929 ret = 0; 2930 break; 2931 } 2932 2933 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2934 sta && iwl_mvm_has_new_rx_api(mvm) && 2935 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2936 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2937 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2938 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2939 struct ieee80211_key_seq seq; 2940 int tid, q; 2941 2942 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2943 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 2944 ptk_pn = kzalloc(sizeof(*ptk_pn) + 2945 mvm->trans->num_rx_queues * 2946 sizeof(ptk_pn->q[0]), 2947 GFP_KERNEL); 2948 if (!ptk_pn) { 2949 ret = -ENOMEM; 2950 break; 2951 } 2952 2953 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 2954 ieee80211_get_key_rx_seq(key, tid, &seq); 2955 for (q = 0; q < mvm->trans->num_rx_queues; q++) 2956 memcpy(ptk_pn->q[q].pn[tid], 2957 seq.ccmp.pn, 2958 IEEE80211_CCMP_PN_LEN); 2959 } 2960 2961 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 2962 } 2963 2964 /* in HW restart reuse the index, otherwise request a new one */ 2965 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2966 key_offset = key->hw_key_idx; 2967 else 2968 key_offset = STA_KEY_IDX_INVALID; 2969 2970 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 2971 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 2972 if (ret) { 2973 IWL_WARN(mvm, "set key failed\n"); 2974 /* 2975 * can't add key for RX, but we don't need it 2976 * in the device for TX so still return 0 2977 */ 2978 key->hw_key_idx = STA_KEY_IDX_INVALID; 2979 ret = 0; 2980 } 2981 2982 break; 2983 case DISABLE_KEY: 2984 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 2985 ret = 0; 2986 break; 2987 } 2988 2989 if (sta && iwl_mvm_has_new_rx_api(mvm) && 2990 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 2991 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 2992 key->cipher == WLAN_CIPHER_SUITE_GCMP || 2993 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 2994 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2995 ptk_pn = rcu_dereference_protected( 2996 mvmsta->ptk_pn[keyidx], 2997 lockdep_is_held(&mvm->mutex)); 2998 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 2999 if (ptk_pn) 3000 kfree_rcu(ptk_pn, rcu_head); 3001 } 3002 3003 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3004 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3005 break; 3006 default: 3007 ret = -EINVAL; 3008 } 3009 3010 mutex_unlock(&mvm->mutex); 3011 return ret; 3012 } 3013 3014 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3015 struct ieee80211_vif *vif, 3016 struct ieee80211_key_conf *keyconf, 3017 struct ieee80211_sta *sta, 3018 u32 iv32, u16 *phase1key) 3019 { 3020 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3021 3022 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3023 return; 3024 3025 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3026 } 3027 3028 3029 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3030 struct iwl_rx_packet *pkt, void *data) 3031 { 3032 struct iwl_mvm *mvm = 3033 container_of(notif_wait, struct iwl_mvm, notif_wait); 3034 struct iwl_hs20_roc_res *resp; 3035 int resp_len = iwl_rx_packet_payload_len(pkt); 3036 struct iwl_mvm_time_event_data *te_data = data; 3037 3038 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3039 return true; 3040 3041 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3042 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3043 return true; 3044 } 3045 3046 resp = (void *)pkt->data; 3047 3048 IWL_DEBUG_TE(mvm, 3049 "Aux ROC: Recieved response from ucode: status=%d uid=%d\n", 3050 resp->status, resp->event_unique_id); 3051 3052 te_data->uid = le32_to_cpu(resp->event_unique_id); 3053 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3054 te_data->uid); 3055 3056 spin_lock_bh(&mvm->time_event_lock); 3057 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3058 spin_unlock_bh(&mvm->time_event_lock); 3059 3060 return true; 3061 } 3062 3063 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3064 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3065 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3066 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3067 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3068 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3069 struct ieee80211_channel *channel, 3070 struct ieee80211_vif *vif, 3071 int duration) 3072 { 3073 int res, time_reg = DEVICE_SYSTEM_TIME_REG; 3074 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3075 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3076 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3077 struct iwl_notification_wait wait_time_event; 3078 u32 dtim_interval = vif->bss_conf.dtim_period * 3079 vif->bss_conf.beacon_int; 3080 u32 req_dur, delay; 3081 struct iwl_hs20_roc_req aux_roc_req = { 3082 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3083 .id_and_color = 3084 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3085 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3086 /* Set the channel info data */ 3087 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ? 3088 PHY_BAND_24 : PHY_BAND_5, 3089 .channel_info.channel = channel->hw_value, 3090 .channel_info.width = PHY_VHT_CHANNEL_MODE20, 3091 /* Set the time and duration */ 3092 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)), 3093 }; 3094 3095 delay = AUX_ROC_MIN_DELAY; 3096 req_dur = MSEC_TO_TU(duration); 3097 3098 /* 3099 * If we are associated we want the delay time to be at least one 3100 * dtim interval so that the FW can wait until after the DTIM and 3101 * then start the time event, this will potentially allow us to 3102 * remain off-channel for the max duration. 3103 * Since we want to use almost a whole dtim interval we would also 3104 * like the delay to be for 2-3 dtim intervals, in case there are 3105 * other time events with higher priority. 3106 */ 3107 if (vif->bss_conf.assoc) { 3108 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3109 /* We cannot remain off-channel longer than the DTIM interval */ 3110 if (dtim_interval <= req_dur) { 3111 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3112 if (req_dur <= AUX_ROC_MIN_DURATION) 3113 req_dur = dtim_interval - 3114 AUX_ROC_MIN_SAFETY_BUFFER; 3115 } 3116 } 3117 3118 aux_roc_req.duration = cpu_to_le32(req_dur); 3119 aux_roc_req.apply_time_max_delay = cpu_to_le32(delay); 3120 3121 IWL_DEBUG_TE(mvm, 3122 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3123 channel->hw_value, req_dur, duration, delay, 3124 dtim_interval); 3125 /* Set the node address */ 3126 memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN); 3127 3128 lockdep_assert_held(&mvm->mutex); 3129 3130 spin_lock_bh(&mvm->time_event_lock); 3131 3132 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3133 spin_unlock_bh(&mvm->time_event_lock); 3134 return -EIO; 3135 } 3136 3137 te_data->vif = vif; 3138 te_data->duration = duration; 3139 te_data->id = HOT_SPOT_CMD; 3140 3141 spin_unlock_bh(&mvm->time_event_lock); 3142 3143 /* 3144 * Use a notification wait, which really just processes the 3145 * command response and doesn't wait for anything, in order 3146 * to be able to process the response and get the UID inside 3147 * the RX path. Using CMD_WANT_SKB doesn't work because it 3148 * stores the buffer and then wakes up this thread, by which 3149 * time another notification (that the time event started) 3150 * might already be processed unsuccessfully. 3151 */ 3152 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3153 time_event_response, 3154 ARRAY_SIZE(time_event_response), 3155 iwl_mvm_rx_aux_roc, te_data); 3156 3157 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req), 3158 &aux_roc_req); 3159 3160 if (res) { 3161 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3162 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3163 goto out_clear_te; 3164 } 3165 3166 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3167 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3168 /* should never fail */ 3169 WARN_ON_ONCE(res); 3170 3171 if (res) { 3172 out_clear_te: 3173 spin_lock_bh(&mvm->time_event_lock); 3174 iwl_mvm_te_clear_data(mvm, te_data); 3175 spin_unlock_bh(&mvm->time_event_lock); 3176 } 3177 3178 return res; 3179 } 3180 3181 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3182 struct ieee80211_vif *vif, 3183 struct ieee80211_channel *channel, 3184 int duration, 3185 enum ieee80211_roc_type type) 3186 { 3187 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3188 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3189 struct cfg80211_chan_def chandef; 3190 struct iwl_mvm_phy_ctxt *phy_ctxt; 3191 int ret, i; 3192 3193 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3194 duration, type); 3195 3196 flush_work(&mvm->roc_done_wk); 3197 3198 mutex_lock(&mvm->mutex); 3199 3200 switch (vif->type) { 3201 case NL80211_IFTYPE_STATION: 3202 if (fw_has_capa(&mvm->fw->ucode_capa, 3203 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3204 /* Use aux roc framework (HS20) */ 3205 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3206 vif, duration); 3207 goto out_unlock; 3208 } 3209 IWL_ERR(mvm, "hotspot not supported\n"); 3210 ret = -EINVAL; 3211 goto out_unlock; 3212 case NL80211_IFTYPE_P2P_DEVICE: 3213 /* handle below */ 3214 break; 3215 default: 3216 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3217 ret = -EINVAL; 3218 goto out_unlock; 3219 } 3220 3221 for (i = 0; i < NUM_PHY_CTX; i++) { 3222 phy_ctxt = &mvm->phy_ctxts[i]; 3223 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3224 continue; 3225 3226 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3227 /* 3228 * Unbind the P2P_DEVICE from the current PHY context, 3229 * and if the PHY context is not used remove it. 3230 */ 3231 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3232 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3233 goto out_unlock; 3234 3235 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3236 3237 /* Bind the P2P_DEVICE to the current PHY Context */ 3238 mvmvif->phy_ctxt = phy_ctxt; 3239 3240 ret = iwl_mvm_binding_add_vif(mvm, vif); 3241 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3242 goto out_unlock; 3243 3244 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3245 goto schedule_time_event; 3246 } 3247 } 3248 3249 /* Need to update the PHY context only if the ROC channel changed */ 3250 if (channel == mvmvif->phy_ctxt->channel) 3251 goto schedule_time_event; 3252 3253 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3254 3255 /* 3256 * Change the PHY context configuration as it is currently referenced 3257 * only by the P2P Device MAC 3258 */ 3259 if (mvmvif->phy_ctxt->ref == 1) { 3260 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3261 &chandef, 1, 1); 3262 if (ret) 3263 goto out_unlock; 3264 } else { 3265 /* 3266 * The PHY context is shared with other MACs. Need to remove the 3267 * P2P Device from the binding, allocate an new PHY context and 3268 * create a new binding 3269 */ 3270 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3271 if (!phy_ctxt) { 3272 ret = -ENOSPC; 3273 goto out_unlock; 3274 } 3275 3276 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3277 1, 1); 3278 if (ret) { 3279 IWL_ERR(mvm, "Failed to change PHY context\n"); 3280 goto out_unlock; 3281 } 3282 3283 /* Unbind the P2P_DEVICE from the current PHY context */ 3284 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3285 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3286 goto out_unlock; 3287 3288 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3289 3290 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3291 mvmvif->phy_ctxt = phy_ctxt; 3292 3293 ret = iwl_mvm_binding_add_vif(mvm, vif); 3294 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3295 goto out_unlock; 3296 3297 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3298 } 3299 3300 schedule_time_event: 3301 /* Schedule the time events */ 3302 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3303 3304 out_unlock: 3305 mutex_unlock(&mvm->mutex); 3306 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3307 return ret; 3308 } 3309 3310 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw) 3311 { 3312 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3313 3314 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3315 3316 mutex_lock(&mvm->mutex); 3317 iwl_mvm_stop_roc(mvm); 3318 mutex_unlock(&mvm->mutex); 3319 3320 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3321 return 0; 3322 } 3323 3324 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3325 struct ieee80211_chanctx_conf *ctx) 3326 { 3327 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3328 struct iwl_mvm_phy_ctxt *phy_ctxt; 3329 int ret; 3330 3331 lockdep_assert_held(&mvm->mutex); 3332 3333 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3334 3335 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3336 if (!phy_ctxt) { 3337 ret = -ENOSPC; 3338 goto out; 3339 } 3340 3341 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3342 ctx->rx_chains_static, 3343 ctx->rx_chains_dynamic); 3344 if (ret) { 3345 IWL_ERR(mvm, "Failed to add PHY context\n"); 3346 goto out; 3347 } 3348 3349 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3350 *phy_ctxt_id = phy_ctxt->id; 3351 out: 3352 return ret; 3353 } 3354 3355 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3356 struct ieee80211_chanctx_conf *ctx) 3357 { 3358 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3359 int ret; 3360 3361 mutex_lock(&mvm->mutex); 3362 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3363 mutex_unlock(&mvm->mutex); 3364 3365 return ret; 3366 } 3367 3368 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3369 struct ieee80211_chanctx_conf *ctx) 3370 { 3371 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3372 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3373 3374 lockdep_assert_held(&mvm->mutex); 3375 3376 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3377 } 3378 3379 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3380 struct ieee80211_chanctx_conf *ctx) 3381 { 3382 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3383 3384 mutex_lock(&mvm->mutex); 3385 __iwl_mvm_remove_chanctx(mvm, ctx); 3386 mutex_unlock(&mvm->mutex); 3387 } 3388 3389 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 3390 struct ieee80211_chanctx_conf *ctx, 3391 u32 changed) 3392 { 3393 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3394 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3395 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3396 3397 if (WARN_ONCE((phy_ctxt->ref > 1) && 3398 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 3399 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 3400 IEEE80211_CHANCTX_CHANGE_RADAR | 3401 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 3402 "Cannot change PHY. Ref=%d, changed=0x%X\n", 3403 phy_ctxt->ref, changed)) 3404 return; 3405 3406 mutex_lock(&mvm->mutex); 3407 iwl_mvm_bt_coex_vif_change(mvm); 3408 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def, 3409 ctx->rx_chains_static, 3410 ctx->rx_chains_dynamic); 3411 mutex_unlock(&mvm->mutex); 3412 } 3413 3414 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 3415 struct ieee80211_vif *vif, 3416 struct ieee80211_chanctx_conf *ctx, 3417 bool switching_chanctx) 3418 { 3419 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3420 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3421 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3422 int ret; 3423 3424 lockdep_assert_held(&mvm->mutex); 3425 3426 mvmvif->phy_ctxt = phy_ctxt; 3427 3428 switch (vif->type) { 3429 case NL80211_IFTYPE_AP: 3430 /* only needed if we're switching chanctx (i.e. during CSA) */ 3431 if (switching_chanctx) { 3432 mvmvif->ap_ibss_active = true; 3433 break; 3434 } 3435 case NL80211_IFTYPE_ADHOC: 3436 /* 3437 * The AP binding flow is handled as part of the start_ap flow 3438 * (in bss_info_changed), similarly for IBSS. 3439 */ 3440 ret = 0; 3441 goto out; 3442 case NL80211_IFTYPE_STATION: 3443 break; 3444 case NL80211_IFTYPE_MONITOR: 3445 /* always disable PS when a monitor interface is active */ 3446 mvmvif->ps_disabled = true; 3447 break; 3448 default: 3449 ret = -EINVAL; 3450 goto out; 3451 } 3452 3453 ret = iwl_mvm_binding_add_vif(mvm, vif); 3454 if (ret) 3455 goto out; 3456 3457 /* 3458 * Power state must be updated before quotas, 3459 * otherwise fw will complain. 3460 */ 3461 iwl_mvm_power_update_mac(mvm); 3462 3463 /* Setting the quota at this stage is only required for monitor 3464 * interfaces. For the other types, the bss_info changed flow 3465 * will handle quota settings. 3466 */ 3467 if (vif->type == NL80211_IFTYPE_MONITOR) { 3468 mvmvif->monitor_active = true; 3469 ret = iwl_mvm_update_quotas(mvm, false, NULL); 3470 if (ret) 3471 goto out_remove_binding; 3472 3473 ret = iwl_mvm_add_snif_sta(mvm, vif); 3474 if (ret) 3475 goto out_remove_binding; 3476 3477 } 3478 3479 /* Handle binding during CSA */ 3480 if (vif->type == NL80211_IFTYPE_AP) { 3481 iwl_mvm_update_quotas(mvm, false, NULL); 3482 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3483 } 3484 3485 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 3486 u32 duration = 2 * vif->bss_conf.beacon_int; 3487 3488 /* iwl_mvm_protect_session() reads directly from the 3489 * device (the system time), so make sure it is 3490 * available. 3491 */ 3492 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA); 3493 if (ret) 3494 goto out_remove_binding; 3495 3496 /* Protect the session to make sure we hear the first 3497 * beacon on the new channel. 3498 */ 3499 iwl_mvm_protect_session(mvm, vif, duration, duration, 3500 vif->bss_conf.beacon_int / 2, 3501 true); 3502 3503 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA); 3504 3505 iwl_mvm_update_quotas(mvm, false, NULL); 3506 } 3507 3508 goto out; 3509 3510 out_remove_binding: 3511 iwl_mvm_binding_remove_vif(mvm, vif); 3512 iwl_mvm_power_update_mac(mvm); 3513 out: 3514 if (ret) 3515 mvmvif->phy_ctxt = NULL; 3516 return ret; 3517 } 3518 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 3519 struct ieee80211_vif *vif, 3520 struct ieee80211_chanctx_conf *ctx) 3521 { 3522 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3523 int ret; 3524 3525 mutex_lock(&mvm->mutex); 3526 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 3527 mutex_unlock(&mvm->mutex); 3528 3529 return ret; 3530 } 3531 3532 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 3533 struct ieee80211_vif *vif, 3534 struct ieee80211_chanctx_conf *ctx, 3535 bool switching_chanctx) 3536 { 3537 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3538 struct ieee80211_vif *disabled_vif = NULL; 3539 3540 lockdep_assert_held(&mvm->mutex); 3541 3542 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 3543 3544 switch (vif->type) { 3545 case NL80211_IFTYPE_ADHOC: 3546 goto out; 3547 case NL80211_IFTYPE_MONITOR: 3548 mvmvif->monitor_active = false; 3549 mvmvif->ps_disabled = false; 3550 iwl_mvm_rm_snif_sta(mvm, vif); 3551 break; 3552 case NL80211_IFTYPE_AP: 3553 /* This part is triggered only during CSA */ 3554 if (!switching_chanctx || !mvmvif->ap_ibss_active) 3555 goto out; 3556 3557 mvmvif->csa_countdown = false; 3558 3559 /* Set CS bit on all the stations */ 3560 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 3561 3562 /* Save blocked iface, the timeout is set on the next beacon */ 3563 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 3564 3565 mvmvif->ap_ibss_active = false; 3566 break; 3567 case NL80211_IFTYPE_STATION: 3568 if (!switching_chanctx) 3569 break; 3570 3571 disabled_vif = vif; 3572 3573 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 3574 break; 3575 default: 3576 break; 3577 } 3578 3579 iwl_mvm_update_quotas(mvm, false, disabled_vif); 3580 iwl_mvm_binding_remove_vif(mvm, vif); 3581 3582 out: 3583 mvmvif->phy_ctxt = NULL; 3584 iwl_mvm_power_update_mac(mvm); 3585 } 3586 3587 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 3588 struct ieee80211_vif *vif, 3589 struct ieee80211_chanctx_conf *ctx) 3590 { 3591 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3592 3593 mutex_lock(&mvm->mutex); 3594 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 3595 mutex_unlock(&mvm->mutex); 3596 } 3597 3598 static int 3599 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 3600 struct ieee80211_vif_chanctx_switch *vifs) 3601 { 3602 int ret; 3603 3604 mutex_lock(&mvm->mutex); 3605 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3606 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 3607 3608 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 3609 if (ret) { 3610 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 3611 goto out_reassign; 3612 } 3613 3614 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3615 true); 3616 if (ret) { 3617 IWL_ERR(mvm, 3618 "failed to assign new_ctx during channel switch\n"); 3619 goto out_remove; 3620 } 3621 3622 /* we don't support TDLS during DCM - can be caused by channel switch */ 3623 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3624 iwl_mvm_teardown_tdls_peers(mvm); 3625 3626 goto out; 3627 3628 out_remove: 3629 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 3630 3631 out_reassign: 3632 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 3633 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 3634 goto out_restart; 3635 } 3636 3637 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3638 true)) { 3639 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3640 goto out_restart; 3641 } 3642 3643 goto out; 3644 3645 out_restart: 3646 /* things keep failing, better restart the hw */ 3647 iwl_mvm_nic_restart(mvm, false); 3648 3649 out: 3650 mutex_unlock(&mvm->mutex); 3651 3652 return ret; 3653 } 3654 3655 static int 3656 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 3657 struct ieee80211_vif_chanctx_switch *vifs) 3658 { 3659 int ret; 3660 3661 mutex_lock(&mvm->mutex); 3662 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 3663 3664 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 3665 true); 3666 if (ret) { 3667 IWL_ERR(mvm, 3668 "failed to assign new_ctx during channel switch\n"); 3669 goto out_reassign; 3670 } 3671 3672 goto out; 3673 3674 out_reassign: 3675 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 3676 true)) { 3677 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 3678 goto out_restart; 3679 } 3680 3681 goto out; 3682 3683 out_restart: 3684 /* things keep failing, better restart the hw */ 3685 iwl_mvm_nic_restart(mvm, false); 3686 3687 out: 3688 mutex_unlock(&mvm->mutex); 3689 3690 return ret; 3691 } 3692 3693 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 3694 struct ieee80211_vif_chanctx_switch *vifs, 3695 int n_vifs, 3696 enum ieee80211_chanctx_switch_mode mode) 3697 { 3698 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3699 int ret; 3700 3701 /* we only support a single-vif right now */ 3702 if (n_vifs > 1) 3703 return -EOPNOTSUPP; 3704 3705 switch (mode) { 3706 case CHANCTX_SWMODE_SWAP_CONTEXTS: 3707 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 3708 break; 3709 case CHANCTX_SWMODE_REASSIGN_VIF: 3710 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 3711 break; 3712 default: 3713 ret = -EOPNOTSUPP; 3714 break; 3715 } 3716 3717 return ret; 3718 } 3719 3720 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 3721 struct ieee80211_sta *sta, 3722 bool set) 3723 { 3724 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3725 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3726 3727 if (!mvm_sta || !mvm_sta->vif) { 3728 IWL_ERR(mvm, "Station is not associated to a vif\n"); 3729 return -EINVAL; 3730 } 3731 3732 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 3733 } 3734 3735 #ifdef CONFIG_NL80211_TESTMODE 3736 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 3737 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 3738 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 3739 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 3740 }; 3741 3742 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 3743 struct ieee80211_vif *vif, 3744 void *data, int len) 3745 { 3746 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 3747 int err; 3748 u32 noa_duration; 3749 3750 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy, 3751 NULL); 3752 if (err) 3753 return err; 3754 3755 if (!tb[IWL_MVM_TM_ATTR_CMD]) 3756 return -EINVAL; 3757 3758 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 3759 case IWL_MVM_TM_CMD_SET_NOA: 3760 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 3761 !vif->bss_conf.enable_beacon || 3762 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 3763 return -EINVAL; 3764 3765 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 3766 if (noa_duration >= vif->bss_conf.beacon_int) 3767 return -EINVAL; 3768 3769 mvm->noa_duration = noa_duration; 3770 mvm->noa_vif = vif; 3771 3772 return iwl_mvm_update_quotas(mvm, false, NULL); 3773 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 3774 /* must be associated client vif - ignore authorized */ 3775 if (!vif || vif->type != NL80211_IFTYPE_STATION || 3776 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 3777 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 3778 return -EINVAL; 3779 3780 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 3781 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3782 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3783 } 3784 3785 return -EOPNOTSUPP; 3786 } 3787 3788 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 3789 struct ieee80211_vif *vif, 3790 void *data, int len) 3791 { 3792 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3793 int err; 3794 3795 mutex_lock(&mvm->mutex); 3796 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 3797 mutex_unlock(&mvm->mutex); 3798 3799 return err; 3800 } 3801 #endif 3802 3803 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 3804 struct ieee80211_vif *vif, 3805 struct ieee80211_channel_switch *chsw) 3806 { 3807 /* By implementing this operation, we prevent mac80211 from 3808 * starting its own channel switch timer, so that we can call 3809 * ieee80211_chswitch_done() ourselves at the right time 3810 * (which is when the absence time event starts). 3811 */ 3812 3813 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 3814 "dummy channel switch op\n"); 3815 } 3816 3817 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 3818 struct ieee80211_vif *vif, 3819 struct ieee80211_channel_switch *chsw) 3820 { 3821 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3822 struct ieee80211_vif *csa_vif; 3823 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3824 u32 apply_time; 3825 int ret; 3826 3827 mutex_lock(&mvm->mutex); 3828 3829 mvmvif->csa_failed = false; 3830 3831 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 3832 chsw->chandef.center_freq1); 3833 3834 iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH); 3835 3836 switch (vif->type) { 3837 case NL80211_IFTYPE_AP: 3838 csa_vif = 3839 rcu_dereference_protected(mvm->csa_vif, 3840 lockdep_is_held(&mvm->mutex)); 3841 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 3842 "Another CSA is already in progress")) { 3843 ret = -EBUSY; 3844 goto out_unlock; 3845 } 3846 3847 /* we still didn't unblock tx. prevent new CS meanwhile */ 3848 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 3849 lockdep_is_held(&mvm->mutex))) { 3850 ret = -EBUSY; 3851 goto out_unlock; 3852 } 3853 3854 rcu_assign_pointer(mvm->csa_vif, vif); 3855 3856 if (WARN_ONCE(mvmvif->csa_countdown, 3857 "Previous CSA countdown didn't complete")) { 3858 ret = -EBUSY; 3859 goto out_unlock; 3860 } 3861 3862 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 3863 3864 break; 3865 case NL80211_IFTYPE_STATION: 3866 if (mvmvif->lqm_active) 3867 iwl_mvm_send_lqm_cmd(vif, 3868 LQM_CMD_OPERATION_STOP_MEASUREMENT, 3869 0, 0); 3870 3871 /* Schedule the time event to a bit before beacon 1, 3872 * to make sure we're in the new channel when the 3873 * GO/AP arrives. 3874 */ 3875 apply_time = chsw->device_timestamp + 3876 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 3877 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 3878 3879 if (chsw->block_tx) 3880 iwl_mvm_csa_client_absent(mvm, vif); 3881 3882 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 3883 apply_time); 3884 if (mvmvif->bf_data.bf_enabled) { 3885 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3886 if (ret) 3887 goto out_unlock; 3888 } 3889 3890 break; 3891 default: 3892 break; 3893 } 3894 3895 mvmvif->ps_disabled = true; 3896 3897 ret = iwl_mvm_power_update_ps(mvm); 3898 if (ret) 3899 goto out_unlock; 3900 3901 /* we won't be on this channel any longer */ 3902 iwl_mvm_teardown_tdls_peers(mvm); 3903 3904 out_unlock: 3905 mutex_unlock(&mvm->mutex); 3906 3907 return ret; 3908 } 3909 3910 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 3911 struct ieee80211_vif *vif) 3912 { 3913 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3914 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3915 int ret; 3916 3917 mutex_lock(&mvm->mutex); 3918 3919 if (mvmvif->csa_failed) { 3920 mvmvif->csa_failed = false; 3921 ret = -EIO; 3922 goto out_unlock; 3923 } 3924 3925 if (vif->type == NL80211_IFTYPE_STATION) { 3926 struct iwl_mvm_sta *mvmsta; 3927 3928 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 3929 mvmvif->ap_sta_id); 3930 3931 if (WARN_ON(!mvmsta)) { 3932 ret = -EIO; 3933 goto out_unlock; 3934 } 3935 3936 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 3937 3938 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3939 3940 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 3941 if (ret) 3942 goto out_unlock; 3943 3944 iwl_mvm_stop_session_protection(mvm, vif); 3945 } 3946 3947 mvmvif->ps_disabled = false; 3948 3949 ret = iwl_mvm_power_update_ps(mvm); 3950 3951 out_unlock: 3952 mutex_unlock(&mvm->mutex); 3953 3954 return ret; 3955 } 3956 3957 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 3958 struct ieee80211_vif *vif, u32 queues, bool drop) 3959 { 3960 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3961 struct iwl_mvm_vif *mvmvif; 3962 struct iwl_mvm_sta *mvmsta; 3963 struct ieee80211_sta *sta; 3964 int i; 3965 u32 msk = 0; 3966 3967 if (!vif || vif->type != NL80211_IFTYPE_STATION) 3968 return; 3969 3970 /* Make sure we're done with the deferred traffic before flushing */ 3971 if (iwl_mvm_is_dqa_supported(mvm)) 3972 flush_work(&mvm->add_stream_wk); 3973 3974 mutex_lock(&mvm->mutex); 3975 mvmvif = iwl_mvm_vif_from_mac80211(vif); 3976 3977 /* flush the AP-station and all TDLS peers */ 3978 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 3979 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3980 lockdep_is_held(&mvm->mutex)); 3981 if (IS_ERR_OR_NULL(sta)) 3982 continue; 3983 3984 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3985 if (mvmsta->vif != vif) 3986 continue; 3987 3988 /* make sure only TDLS peers or the AP are flushed */ 3989 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 3990 3991 msk |= mvmsta->tfd_queue_msk; 3992 } 3993 3994 if (drop) { 3995 if (iwl_mvm_flush_tx_path(mvm, msk, 0)) 3996 IWL_ERR(mvm, "flush request fail\n"); 3997 mutex_unlock(&mvm->mutex); 3998 } else { 3999 mutex_unlock(&mvm->mutex); 4000 4001 /* this can take a while, and we may need/want other operations 4002 * to succeed while doing this, so do it without the mutex held 4003 */ 4004 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4005 } 4006 } 4007 4008 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4009 struct survey_info *survey) 4010 { 4011 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4012 int ret; 4013 4014 memset(survey, 0, sizeof(*survey)); 4015 4016 /* only support global statistics right now */ 4017 if (idx != 0) 4018 return -ENOENT; 4019 4020 if (!fw_has_capa(&mvm->fw->ucode_capa, 4021 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4022 return -ENOENT; 4023 4024 mutex_lock(&mvm->mutex); 4025 4026 if (mvm->ucode_loaded) { 4027 ret = iwl_mvm_request_statistics(mvm, false); 4028 if (ret) 4029 goto out; 4030 } 4031 4032 survey->filled = SURVEY_INFO_TIME | 4033 SURVEY_INFO_TIME_RX | 4034 SURVEY_INFO_TIME_TX | 4035 SURVEY_INFO_TIME_SCAN; 4036 survey->time = mvm->accu_radio_stats.on_time_rf + 4037 mvm->radio_stats.on_time_rf; 4038 do_div(survey->time, USEC_PER_MSEC); 4039 4040 survey->time_rx = mvm->accu_radio_stats.rx_time + 4041 mvm->radio_stats.rx_time; 4042 do_div(survey->time_rx, USEC_PER_MSEC); 4043 4044 survey->time_tx = mvm->accu_radio_stats.tx_time + 4045 mvm->radio_stats.tx_time; 4046 do_div(survey->time_tx, USEC_PER_MSEC); 4047 4048 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4049 mvm->radio_stats.on_time_scan; 4050 do_div(survey->time_scan, USEC_PER_MSEC); 4051 4052 ret = 0; 4053 out: 4054 mutex_unlock(&mvm->mutex); 4055 return ret; 4056 } 4057 4058 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4059 struct ieee80211_vif *vif, 4060 struct ieee80211_sta *sta, 4061 struct station_info *sinfo) 4062 { 4063 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4064 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4065 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4066 4067 if (mvmsta->avg_energy) { 4068 sinfo->signal_avg = mvmsta->avg_energy; 4069 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG); 4070 } 4071 4072 if (!fw_has_capa(&mvm->fw->ucode_capa, 4073 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4074 return; 4075 4076 /* if beacon filtering isn't on mac80211 does it anyway */ 4077 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4078 return; 4079 4080 if (!vif->bss_conf.assoc) 4081 return; 4082 4083 mutex_lock(&mvm->mutex); 4084 4085 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4086 goto unlock; 4087 4088 if (iwl_mvm_request_statistics(mvm, false)) 4089 goto unlock; 4090 4091 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4092 mvmvif->beacon_stats.accu_num_beacons; 4093 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX); 4094 if (mvmvif->beacon_stats.avg_signal) { 4095 /* firmware only reports a value after RXing a few beacons */ 4096 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4097 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4098 } 4099 unlock: 4100 mutex_unlock(&mvm->mutex); 4101 } 4102 4103 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4104 struct ieee80211_vif *vif, 4105 const struct ieee80211_event *event) 4106 { 4107 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...) \ 4108 do { \ 4109 if ((_cnt) && --(_cnt)) \ 4110 break; \ 4111 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\ 4112 } while (0) 4113 4114 struct iwl_fw_dbg_trigger_tlv *trig; 4115 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4116 4117 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME)) 4118 return; 4119 4120 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME); 4121 trig_mlme = (void *)trig->data; 4122 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 4123 return; 4124 4125 if (event->u.mlme.data == ASSOC_EVENT) { 4126 if (event->u.mlme.status == MLME_DENIED) 4127 CHECK_MLME_TRIGGER(mvm, trig, buf, 4128 trig_mlme->stop_assoc_denied, 4129 "DENIED ASSOC: reason %d", 4130 event->u.mlme.reason); 4131 else if (event->u.mlme.status == MLME_TIMEOUT) 4132 CHECK_MLME_TRIGGER(mvm, trig, buf, 4133 trig_mlme->stop_assoc_timeout, 4134 "ASSOC TIMEOUT"); 4135 } else if (event->u.mlme.data == AUTH_EVENT) { 4136 if (event->u.mlme.status == MLME_DENIED) 4137 CHECK_MLME_TRIGGER(mvm, trig, buf, 4138 trig_mlme->stop_auth_denied, 4139 "DENIED AUTH: reason %d", 4140 event->u.mlme.reason); 4141 else if (event->u.mlme.status == MLME_TIMEOUT) 4142 CHECK_MLME_TRIGGER(mvm, trig, buf, 4143 trig_mlme->stop_auth_timeout, 4144 "AUTH TIMEOUT"); 4145 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4146 CHECK_MLME_TRIGGER(mvm, trig, buf, 4147 trig_mlme->stop_rx_deauth, 4148 "DEAUTH RX %d", event->u.mlme.reason); 4149 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4150 CHECK_MLME_TRIGGER(mvm, trig, buf, 4151 trig_mlme->stop_tx_deauth, 4152 "DEAUTH TX %d", event->u.mlme.reason); 4153 } 4154 #undef CHECK_MLME_TRIGGER 4155 } 4156 4157 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 4158 struct ieee80211_vif *vif, 4159 const struct ieee80211_event *event) 4160 { 4161 struct iwl_fw_dbg_trigger_tlv *trig; 4162 struct iwl_fw_dbg_trigger_ba *ba_trig; 4163 4164 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4165 return; 4166 4167 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4168 ba_trig = (void *)trig->data; 4169 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 4170 return; 4171 4172 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 4173 return; 4174 4175 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 4176 "BAR received from %pM, tid %d, ssn %d", 4177 event->u.ba.sta->addr, event->u.ba.tid, 4178 event->u.ba.ssn); 4179 } 4180 4181 static void 4182 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 4183 struct ieee80211_vif *vif, 4184 const struct ieee80211_event *event) 4185 { 4186 struct iwl_fw_dbg_trigger_tlv *trig; 4187 struct iwl_fw_dbg_trigger_ba *ba_trig; 4188 4189 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) 4190 return; 4191 4192 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); 4193 ba_trig = (void *)trig->data; 4194 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig)) 4195 return; 4196 4197 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid))) 4198 return; 4199 4200 iwl_mvm_fw_dbg_collect_trig(mvm, trig, 4201 "Frame from %pM timed out, tid %d", 4202 event->u.ba.sta->addr, event->u.ba.tid); 4203 } 4204 4205 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 4206 struct ieee80211_vif *vif, 4207 const struct ieee80211_event *event) 4208 { 4209 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4210 4211 switch (event->type) { 4212 case MLME_EVENT: 4213 iwl_mvm_event_mlme_callback(mvm, vif, event); 4214 break; 4215 case BAR_RX_EVENT: 4216 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 4217 break; 4218 case BA_FRAME_TIMEOUT: 4219 iwl_mvm_event_frame_timeout_callback(mvm, vif, event); 4220 break; 4221 default: 4222 break; 4223 } 4224 } 4225 4226 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 4227 struct iwl_mvm_internal_rxq_notif *notif, 4228 u32 size) 4229 { 4230 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 4231 int ret; 4232 4233 lockdep_assert_held(&mvm->mutex); 4234 4235 /* TODO - remove a000 disablement when we have RXQ config API */ 4236 if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm)) 4237 return; 4238 4239 notif->cookie = mvm->queue_sync_cookie; 4240 4241 if (notif->sync) 4242 atomic_set(&mvm->queue_sync_counter, 4243 mvm->trans->num_rx_queues); 4244 4245 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size); 4246 if (ret) { 4247 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 4248 goto out; 4249 } 4250 4251 if (notif->sync) 4252 ret = wait_event_timeout(mvm->rx_sync_waitq, 4253 atomic_read(&mvm->queue_sync_counter) == 0, 4254 HZ); 4255 WARN_ON_ONCE(!ret); 4256 4257 out: 4258 atomic_set(&mvm->queue_sync_counter, 0); 4259 mvm->queue_sync_cookie++; 4260 } 4261 4262 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 4263 { 4264 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4265 struct iwl_mvm_internal_rxq_notif data = { 4266 .type = IWL_MVM_RXQ_EMPTY, 4267 .sync = 1, 4268 }; 4269 4270 mutex_lock(&mvm->mutex); 4271 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 4272 mutex_unlock(&mvm->mutex); 4273 } 4274 4275 const struct ieee80211_ops iwl_mvm_hw_ops = { 4276 .tx = iwl_mvm_mac_tx, 4277 .ampdu_action = iwl_mvm_mac_ampdu_action, 4278 .start = iwl_mvm_mac_start, 4279 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 4280 .stop = iwl_mvm_mac_stop, 4281 .add_interface = iwl_mvm_mac_add_interface, 4282 .remove_interface = iwl_mvm_mac_remove_interface, 4283 .config = iwl_mvm_mac_config, 4284 .prepare_multicast = iwl_mvm_prepare_multicast, 4285 .configure_filter = iwl_mvm_configure_filter, 4286 .config_iface_filter = iwl_mvm_config_iface_filter, 4287 .bss_info_changed = iwl_mvm_bss_info_changed, 4288 .hw_scan = iwl_mvm_mac_hw_scan, 4289 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 4290 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 4291 .sta_state = iwl_mvm_mac_sta_state, 4292 .sta_notify = iwl_mvm_mac_sta_notify, 4293 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 4294 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 4295 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 4296 .sta_rc_update = iwl_mvm_sta_rc_update, 4297 .conf_tx = iwl_mvm_mac_conf_tx, 4298 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 4299 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 4300 .flush = iwl_mvm_mac_flush, 4301 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 4302 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 4303 .set_key = iwl_mvm_mac_set_key, 4304 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 4305 .remain_on_channel = iwl_mvm_roc, 4306 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 4307 .add_chanctx = iwl_mvm_add_chanctx, 4308 .remove_chanctx = iwl_mvm_remove_chanctx, 4309 .change_chanctx = iwl_mvm_change_chanctx, 4310 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 4311 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 4312 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 4313 4314 .start_ap = iwl_mvm_start_ap_ibss, 4315 .stop_ap = iwl_mvm_stop_ap_ibss, 4316 .join_ibss = iwl_mvm_start_ap_ibss, 4317 .leave_ibss = iwl_mvm_stop_ap_ibss, 4318 4319 .set_tim = iwl_mvm_set_tim, 4320 4321 .channel_switch = iwl_mvm_channel_switch, 4322 .pre_channel_switch = iwl_mvm_pre_channel_switch, 4323 .post_channel_switch = iwl_mvm_post_channel_switch, 4324 4325 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 4326 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 4327 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 4328 4329 .event_callback = iwl_mvm_mac_event_callback, 4330 4331 .sync_rx_queues = iwl_mvm_sync_rx_queues, 4332 4333 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 4334 4335 #ifdef CONFIG_PM_SLEEP 4336 /* look at d3.c */ 4337 .suspend = iwl_mvm_suspend, 4338 .resume = iwl_mvm_resume, 4339 .set_wakeup = iwl_mvm_set_wakeup, 4340 .set_rekey_data = iwl_mvm_set_rekey_data, 4341 #if IS_ENABLED(CONFIG_IPV6) 4342 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 4343 #endif 4344 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 4345 #endif 4346 .get_survey = iwl_mvm_mac_get_survey, 4347 .sta_statistics = iwl_mvm_mac_sta_statistics, 4348 }; 4349