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