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