1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2020 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 * Copyright (C) 2015-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <linux/crc32.h> 9 #include <net/mac80211.h> 10 #include "iwl-io.h" 11 #include "iwl-prph.h" 12 #include "fw-api.h" 13 #include "mvm.h" 14 #include "time-event.h" 15 16 const u8 iwl_mvm_ac_to_tx_fifo[] = { 17 IWL_MVM_TX_FIFO_VO, 18 IWL_MVM_TX_FIFO_VI, 19 IWL_MVM_TX_FIFO_BE, 20 IWL_MVM_TX_FIFO_BK, 21 }; 22 23 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = { 24 IWL_GEN2_EDCA_TX_FIFO_VO, 25 IWL_GEN2_EDCA_TX_FIFO_VI, 26 IWL_GEN2_EDCA_TX_FIFO_BE, 27 IWL_GEN2_EDCA_TX_FIFO_BK, 28 IWL_GEN2_TRIG_TX_FIFO_VO, 29 IWL_GEN2_TRIG_TX_FIFO_VI, 30 IWL_GEN2_TRIG_TX_FIFO_BE, 31 IWL_GEN2_TRIG_TX_FIFO_BK, 32 }; 33 34 struct iwl_mvm_mac_iface_iterator_data { 35 struct iwl_mvm *mvm; 36 struct ieee80211_vif *vif; 37 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; 38 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; 39 enum iwl_tsf_id preferred_tsf; 40 bool found_vif; 41 }; 42 43 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, 44 struct ieee80211_vif *vif) 45 { 46 struct iwl_mvm_mac_iface_iterator_data *data = _data; 47 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 48 u16 min_bi; 49 50 /* Skip the interface for which we are trying to assign a tsf_id */ 51 if (vif == data->vif) 52 return; 53 54 /* 55 * The TSF is a hardware/firmware resource, there are 4 and 56 * the driver should assign and free them as needed. However, 57 * there are cases where 2 MACs should share the same TSF ID 58 * for the purpose of clock sync, an optimization to avoid 59 * clock drift causing overlapping TBTTs/DTIMs for a GO and 60 * client in the system. 61 * 62 * The firmware will decide according to the MAC type which 63 * will be the leader and follower. Clients that need to sync 64 * with a remote station will be the leader, and an AP or GO 65 * will be the follower. 66 * 67 * Depending on the new interface type it can be following 68 * or become the leader of an existing interface. 69 */ 70 switch (data->vif->type) { 71 case NL80211_IFTYPE_STATION: 72 /* 73 * The new interface is a client, so if the one we're iterating 74 * is an AP, and the beacon interval of the AP is a multiple or 75 * divisor of the beacon interval of the client, the same TSF 76 * should be used to avoid drift between the new client and 77 * existing AP. The existing AP will get drift updates from the 78 * new client context in this case. 79 */ 80 if (vif->type != NL80211_IFTYPE_AP || 81 data->preferred_tsf != NUM_TSF_IDS || 82 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 83 break; 84 85 min_bi = min(data->vif->bss_conf.beacon_int, 86 vif->bss_conf.beacon_int); 87 88 if (!min_bi) 89 break; 90 91 if ((data->vif->bss_conf.beacon_int - 92 vif->bss_conf.beacon_int) % min_bi == 0) { 93 data->preferred_tsf = mvmvif->tsf_id; 94 return; 95 } 96 break; 97 98 case NL80211_IFTYPE_AP: 99 /* 100 * The new interface is AP/GO, so if its beacon interval is a 101 * multiple or a divisor of the beacon interval of an existing 102 * interface, it should get drift updates from an existing 103 * client or use the same TSF as an existing GO. There's no 104 * drift between TSFs internally but if they used different 105 * TSFs then a new client MAC could update one of them and 106 * cause drift that way. 107 */ 108 if ((vif->type != NL80211_IFTYPE_AP && 109 vif->type != NL80211_IFTYPE_STATION) || 110 data->preferred_tsf != NUM_TSF_IDS || 111 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 112 break; 113 114 min_bi = min(data->vif->bss_conf.beacon_int, 115 vif->bss_conf.beacon_int); 116 117 if (!min_bi) 118 break; 119 120 if ((data->vif->bss_conf.beacon_int - 121 vif->bss_conf.beacon_int) % min_bi == 0) { 122 data->preferred_tsf = mvmvif->tsf_id; 123 return; 124 } 125 break; 126 default: 127 /* 128 * For all other interface types there's no need to 129 * take drift into account. Either they're exclusive 130 * like IBSS and monitor, or we don't care much about 131 * their TSF (like P2P Device), but we won't be able 132 * to share the TSF resource. 133 */ 134 break; 135 } 136 137 /* 138 * Unless we exited above, we can't share the TSF resource 139 * that the virtual interface we're iterating over is using 140 * with the new one, so clear the available bit and if this 141 * was the preferred one, reset that as well. 142 */ 143 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); 144 145 if (data->preferred_tsf == mvmvif->tsf_id) 146 data->preferred_tsf = NUM_TSF_IDS; 147 } 148 149 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, 150 struct ieee80211_vif *vif) 151 { 152 struct iwl_mvm_mac_iface_iterator_data *data = _data; 153 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 154 155 /* Iterator may already find the interface being added -- skip it */ 156 if (vif == data->vif) { 157 data->found_vif = true; 158 return; 159 } 160 161 /* Mark MAC IDs as used by clearing the available bit, and 162 * (below) mark TSFs as used if their existing use is not 163 * compatible with the new interface type. 164 * No locking or atomic bit operations are needed since the 165 * data is on the stack of the caller function. 166 */ 167 __clear_bit(mvmvif->id, data->available_mac_ids); 168 169 /* find a suitable tsf_id */ 170 iwl_mvm_mac_tsf_id_iter(_data, mac, vif); 171 } 172 173 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, 174 struct ieee80211_vif *vif) 175 { 176 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 177 struct iwl_mvm_mac_iface_iterator_data data = { 178 .mvm = mvm, 179 .vif = vif, 180 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 181 /* no preference yet */ 182 .preferred_tsf = NUM_TSF_IDS, 183 }; 184 185 ieee80211_iterate_active_interfaces_atomic( 186 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 187 iwl_mvm_mac_tsf_id_iter, &data); 188 189 if (data.preferred_tsf != NUM_TSF_IDS) 190 mvmvif->tsf_id = data.preferred_tsf; 191 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) 192 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 193 NUM_TSF_IDS); 194 } 195 196 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 197 { 198 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 199 struct iwl_mvm_mac_iface_iterator_data data = { 200 .mvm = mvm, 201 .vif = vif, 202 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, 203 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 204 /* no preference yet */ 205 .preferred_tsf = NUM_TSF_IDS, 206 .found_vif = false, 207 }; 208 int ret, i; 209 210 lockdep_assert_held(&mvm->mutex); 211 212 /* 213 * Allocate a MAC ID and a TSF for this MAC, along with the queues 214 * and other resources. 215 */ 216 217 /* 218 * Before the iterator, we start with all MAC IDs and TSFs available. 219 * 220 * During iteration, all MAC IDs are cleared that are in use by other 221 * virtual interfaces, and all TSF IDs are cleared that can't be used 222 * by this new virtual interface because they're used by an interface 223 * that can't share it with the new one. 224 * At the same time, we check if there's a preferred TSF in the case 225 * that we should share it with another interface. 226 */ 227 228 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ 229 switch (vif->type) { 230 case NL80211_IFTYPE_ADHOC: 231 break; 232 case NL80211_IFTYPE_STATION: 233 if (!vif->p2p) 234 break; 235 fallthrough; 236 default: 237 __clear_bit(0, data.available_mac_ids); 238 } 239 240 ieee80211_iterate_active_interfaces_atomic( 241 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 242 iwl_mvm_mac_iface_iterator, &data); 243 244 /* 245 * In the case we're getting here during resume, it's similar to 246 * firmware restart, and with RESUME_ALL the iterator will find 247 * the vif being added already. 248 * We don't want to reassign any IDs in either case since doing 249 * so would probably assign different IDs (as interfaces aren't 250 * necessarily added in the same order), but the old IDs were 251 * preserved anyway, so skip ID assignment for both resume and 252 * recovery. 253 */ 254 if (data.found_vif) 255 return 0; 256 257 /* Therefore, in recovery, we can't get here */ 258 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 259 return -EBUSY; 260 261 mvmvif->id = find_first_bit(data.available_mac_ids, 262 NUM_MAC_INDEX_DRIVER); 263 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 264 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 265 ret = -EIO; 266 goto exit_fail; 267 } 268 269 if (data.preferred_tsf != NUM_TSF_IDS) 270 mvmvif->tsf_id = data.preferred_tsf; 271 else 272 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 273 NUM_TSF_IDS); 274 if (mvmvif->tsf_id == NUM_TSF_IDS) { 275 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 276 ret = -EIO; 277 goto exit_fail; 278 } 279 280 mvmvif->color = 0; 281 282 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 283 mvmvif->time_event_data.id = TE_MAX; 284 285 /* No need to allocate data queues to P2P Device MAC and NAN.*/ 286 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 287 return 0; 288 289 /* Allocate the CAB queue for softAP and GO interfaces */ 290 if (vif->type == NL80211_IFTYPE_AP || 291 vif->type == NL80211_IFTYPE_ADHOC) { 292 /* 293 * For TVQM this will be overwritten later with the FW assigned 294 * queue value (when queue is enabled). 295 */ 296 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 297 } 298 299 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA; 300 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA; 301 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 302 303 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) 304 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; 305 306 return 0; 307 308 exit_fail: 309 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 310 return ret; 311 } 312 313 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 314 struct ieee80211_vif *vif, 315 enum nl80211_band band, 316 u8 *cck_rates, u8 *ofdm_rates) 317 { 318 struct ieee80211_supported_band *sband; 319 unsigned long basic = vif->bss_conf.basic_rates; 320 int lowest_present_ofdm = 100; 321 int lowest_present_cck = 100; 322 u8 cck = 0; 323 u8 ofdm = 0; 324 int i; 325 326 sband = mvm->hw->wiphy->bands[band]; 327 328 for_each_set_bit(i, &basic, BITS_PER_LONG) { 329 int hw = sband->bitrates[i].hw_value; 330 if (hw >= IWL_FIRST_OFDM_RATE) { 331 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 332 if (lowest_present_ofdm > hw) 333 lowest_present_ofdm = hw; 334 } else { 335 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 336 337 cck |= BIT(hw); 338 if (lowest_present_cck > hw) 339 lowest_present_cck = hw; 340 } 341 } 342 343 /* 344 * Now we've got the basic rates as bitmaps in the ofdm and cck 345 * variables. This isn't sufficient though, as there might not 346 * be all the right rates in the bitmap. E.g. if the only basic 347 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 348 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 349 * 350 * [...] a STA responding to a received frame shall transmit 351 * its Control Response frame [...] at the highest rate in the 352 * BSSBasicRateSet parameter that is less than or equal to the 353 * rate of the immediately previous frame in the frame exchange 354 * sequence ([...]) and that is of the same modulation class 355 * ([...]) as the received frame. If no rate contained in the 356 * BSSBasicRateSet parameter meets these conditions, then the 357 * control frame sent in response to a received frame shall be 358 * transmitted at the highest mandatory rate of the PHY that is 359 * less than or equal to the rate of the received frame, and 360 * that is of the same modulation class as the received frame. 361 * 362 * As a consequence, we need to add all mandatory rates that are 363 * lower than all of the basic rates to these bitmaps. 364 */ 365 366 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 367 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 368 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 369 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 370 /* 6M already there or needed so always add */ 371 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 372 373 /* 374 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 375 * Note, however: 376 * - if no CCK rates are basic, it must be ERP since there must 377 * be some basic rates at all, so they're OFDM => ERP PHY 378 * (or we're in 5 GHz, and the cck bitmap will never be used) 379 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 380 * - if 5.5M is basic, 1M and 2M are mandatory 381 * - if 2M is basic, 1M is mandatory 382 * - if 1M is basic, that's the only valid ACK rate. 383 * As a consequence, it's not as complicated as it sounds, just add 384 * any lower rates to the ACK rate bitmap. 385 */ 386 if (IWL_RATE_11M_INDEX < lowest_present_cck) 387 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 388 if (IWL_RATE_5M_INDEX < lowest_present_cck) 389 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 390 if (IWL_RATE_2M_INDEX < lowest_present_cck) 391 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 392 /* 1M already there or needed so always add */ 393 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 394 395 *cck_rates = cck; 396 *ofdm_rates = ofdm; 397 } 398 399 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, 400 struct ieee80211_vif *vif, 401 struct iwl_mac_ctx_cmd *cmd) 402 { 403 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 404 u8 protection_mode = vif->bss_conf.ht_operation_mode & 405 IEEE80211_HT_OP_MODE_PROTECTION; 406 /* The fw does not distinguish between ht and fat */ 407 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 408 409 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 410 /* 411 * See section 9.23.3.1 of IEEE 80211-2012. 412 * Nongreenfield HT STAs Present is not supported. 413 */ 414 switch (protection_mode) { 415 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 416 break; 417 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 418 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 419 cmd->protection_flags |= cpu_to_le32(ht_flag); 420 break; 421 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 422 /* Protect when channel wider than 20MHz */ 423 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) 424 cmd->protection_flags |= cpu_to_le32(ht_flag); 425 break; 426 default: 427 IWL_ERR(mvm, "Illegal protection mode %d\n", 428 protection_mode); 429 break; 430 } 431 } 432 433 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 434 struct ieee80211_vif *vif, 435 struct iwl_mac_ctx_cmd *cmd, 436 const u8 *bssid_override, 437 u32 action) 438 { 439 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 440 struct ieee80211_chanctx_conf *chanctx; 441 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & 442 IEEE80211_HT_OP_MODE_PROTECTION); 443 u8 cck_ack_rates, ofdm_ack_rates; 444 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; 445 int i; 446 447 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 448 mvmvif->color)); 449 cmd->action = cpu_to_le32(action); 450 451 switch (vif->type) { 452 case NL80211_IFTYPE_STATION: 453 if (vif->p2p) 454 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); 455 else 456 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); 457 break; 458 case NL80211_IFTYPE_AP: 459 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); 460 break; 461 case NL80211_IFTYPE_MONITOR: 462 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); 463 break; 464 case NL80211_IFTYPE_P2P_DEVICE: 465 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); 466 break; 467 case NL80211_IFTYPE_ADHOC: 468 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); 469 break; 470 default: 471 WARN_ON_ONCE(1); 472 } 473 474 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 475 476 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 477 478 if (bssid) 479 memcpy(cmd->bssid_addr, bssid, ETH_ALEN); 480 else 481 eth_broadcast_addr(cmd->bssid_addr); 482 483 rcu_read_lock(); 484 chanctx = rcu_dereference(vif->chanctx_conf); 485 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band 486 : NL80211_BAND_2GHZ, 487 &cck_ack_rates, &ofdm_ack_rates); 488 rcu_read_unlock(); 489 490 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); 491 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 492 493 cmd->cck_short_preamble = 494 cpu_to_le32(vif->bss_conf.use_short_preamble ? 495 MAC_FLG_SHORT_PREAMBLE : 0); 496 cmd->short_slot = 497 cpu_to_le32(vif->bss_conf.use_short_slot ? 498 MAC_FLG_SHORT_SLOT : 0); 499 500 cmd->filter_flags = 0; 501 502 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 503 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); 504 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 505 506 cmd->ac[ucode_ac].cw_min = 507 cpu_to_le16(mvmvif->queue_params[i].cw_min); 508 cmd->ac[ucode_ac].cw_max = 509 cpu_to_le16(mvmvif->queue_params[i].cw_max); 510 cmd->ac[ucode_ac].edca_txop = 511 cpu_to_le16(mvmvif->queue_params[i].txop * 32); 512 cmd->ac[ucode_ac].aifsn = mvmvif->queue_params[i].aifs; 513 cmd->ac[ucode_ac].fifos_mask = BIT(txf); 514 } 515 516 if (vif->bss_conf.qos) 517 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 518 519 if (vif->bss_conf.use_cts_prot) 520 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); 521 522 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 523 vif->bss_conf.use_cts_prot, 524 vif->bss_conf.ht_operation_mode); 525 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) 526 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 527 if (ht_enabled) 528 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); 529 } 530 531 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 532 struct iwl_mac_ctx_cmd *cmd) 533 { 534 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 535 sizeof(*cmd), cmd); 536 if (ret) 537 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", 538 le32_to_cpu(cmd->action), ret); 539 return ret; 540 } 541 542 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, 543 struct ieee80211_vif *vif, 544 u32 action, bool force_assoc_off, 545 const u8 *bssid_override) 546 { 547 struct iwl_mac_ctx_cmd cmd = {}; 548 struct iwl_mac_data_sta *ctxt_sta; 549 550 WARN_ON(vif->type != NL80211_IFTYPE_STATION); 551 552 /* Fill the common data for all mac context types */ 553 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); 554 555 if (vif->p2p) { 556 struct ieee80211_p2p_noa_attr *noa = 557 &vif->bss_conf.p2p_noa_attr; 558 559 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & 560 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 561 ctxt_sta = &cmd.p2p_sta.sta; 562 } else { 563 ctxt_sta = &cmd.sta; 564 } 565 566 /* We need the dtim_period to set the MAC as associated */ 567 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && 568 !force_assoc_off) { 569 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 570 u8 ap_sta_id = mvmvif->ap_sta_id; 571 u32 dtim_offs; 572 573 /* 574 * The DTIM count counts down, so when it is N that means N 575 * more beacon intervals happen until the DTIM TBTT. Therefore 576 * add this to the current time. If that ends up being in the 577 * future, the firmware will handle it. 578 * 579 * Also note that the system_timestamp (which we get here as 580 * "sync_device_ts") and TSF timestamp aren't at exactly the 581 * same offset in the frame -- the TSF is at the first symbol 582 * of the TSF, the system timestamp is at signal acquisition 583 * time. This means there's an offset between them of at most 584 * a few hundred microseconds (24 * 8 bits + PLCP time gives 585 * 384us in the longest case), this is currently not relevant 586 * as the firmware wakes up around 2ms before the TBTT. 587 */ 588 dtim_offs = vif->bss_conf.sync_dtim_count * 589 vif->bss_conf.beacon_int; 590 /* convert TU to usecs */ 591 dtim_offs *= 1024; 592 593 ctxt_sta->dtim_tsf = 594 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); 595 ctxt_sta->dtim_time = 596 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); 597 ctxt_sta->assoc_beacon_arrive_time = 598 cpu_to_le32(vif->bss_conf.sync_device_ts); 599 600 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 601 le64_to_cpu(ctxt_sta->dtim_tsf), 602 le32_to_cpu(ctxt_sta->dtim_time), 603 dtim_offs); 604 605 ctxt_sta->is_assoc = cpu_to_le32(1); 606 607 /* 608 * allow multicast data frames only as long as the station is 609 * authorized, i.e., GTK keys are already installed (if needed) 610 */ 611 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) { 612 struct ieee80211_sta *sta; 613 614 rcu_read_lock(); 615 616 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 617 if (!IS_ERR_OR_NULL(sta)) { 618 struct iwl_mvm_sta *mvmsta = 619 iwl_mvm_sta_from_mac80211(sta); 620 621 if (mvmsta->sta_state == 622 IEEE80211_STA_AUTHORIZED) 623 cmd.filter_flags |= 624 cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 625 } 626 627 rcu_read_unlock(); 628 } 629 } else { 630 ctxt_sta->is_assoc = cpu_to_le32(0); 631 632 /* Allow beacons to pass through as long as we are not 633 * associated, or we do not have dtim period information. 634 */ 635 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 636 } 637 638 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 639 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 640 vif->bss_conf.dtim_period); 641 642 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 643 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); 644 645 if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p) 646 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 647 648 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) { 649 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 650 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT) { 651 ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED); 652 if (vif->bss_conf.twt_protected) 653 ctxt_sta->data_policy |= 654 cpu_to_le32(PROTECTED_TWT_SUPPORTED); 655 } 656 } 657 658 659 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 660 } 661 662 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 663 struct ieee80211_vif *vif, 664 u32 action) 665 { 666 struct iwl_mac_ctx_cmd cmd = {}; 667 u32 tfd_queue_msk = BIT(mvm->snif_queue); 668 int ret; 669 670 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 671 672 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 673 674 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 675 MAC_FILTER_IN_CONTROL_AND_MGMT | 676 MAC_FILTER_IN_BEACON | 677 MAC_FILTER_IN_PROBE_REQUEST | 678 MAC_FILTER_IN_CRC32 | 679 MAC_FILTER_ACCEPT_GRP); 680 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); 681 682 /* Allocate sniffer station */ 683 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, 684 vif->type, IWL_STA_GENERAL_PURPOSE); 685 if (ret) 686 return ret; 687 688 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 689 } 690 691 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 692 struct ieee80211_vif *vif, 693 u32 action) 694 { 695 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 696 struct iwl_mac_ctx_cmd cmd = {}; 697 698 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 699 700 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 701 702 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 703 MAC_FILTER_IN_PROBE_REQUEST | 704 MAC_FILTER_ACCEPT_GRP); 705 706 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ 707 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); 708 709 /* TODO: Assumes that the beacon id == mac context id */ 710 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); 711 712 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 713 } 714 715 struct iwl_mvm_go_iterator_data { 716 bool go_active; 717 }; 718 719 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) 720 { 721 struct iwl_mvm_go_iterator_data *data = _data; 722 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 723 724 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 725 mvmvif->ap_ibss_active) 726 data->go_active = true; 727 } 728 729 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, 730 struct ieee80211_vif *vif, 731 u32 action) 732 { 733 struct iwl_mac_ctx_cmd cmd = {}; 734 struct iwl_mvm_go_iterator_data data = {}; 735 736 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); 737 738 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 739 740 /* Override the filter flags to accept only probe requests */ 741 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 742 743 /* 744 * This flag should be set to true when the P2P Device is 745 * discoverable and there is at least another active P2P GO. Settings 746 * this flag will allow the P2P Device to be discoverable on other 747 * channels in addition to its listen channel. 748 * Note that this flag should not be set in other cases as it opens the 749 * Rx filters on all MAC and increases the number of interrupts. 750 */ 751 ieee80211_iterate_active_interfaces_atomic( 752 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 753 iwl_mvm_go_iterator, &data); 754 755 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); 756 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 757 } 758 759 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, 760 __le32 *tim_index, __le32 *tim_size, 761 u8 *beacon, u32 frame_size) 762 { 763 u32 tim_idx; 764 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 765 766 /* The index is relative to frame start but we start looking at the 767 * variable-length part of the beacon. */ 768 tim_idx = mgmt->u.beacon.variable - beacon; 769 770 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 771 while ((tim_idx < (frame_size - 2)) && 772 (beacon[tim_idx] != WLAN_EID_TIM)) 773 tim_idx += beacon[tim_idx+1] + 2; 774 775 /* If TIM field was found, set variables */ 776 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 777 *tim_index = cpu_to_le32(tim_idx); 778 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]); 779 } else { 780 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); 781 } 782 } 783 784 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) 785 { 786 struct ieee80211_mgmt *mgmt = (void *)beacon; 787 const u8 *ie; 788 789 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon))) 790 return 0; 791 792 frame_size -= mgmt->u.beacon.variable - beacon; 793 794 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size); 795 if (!ie) 796 return 0; 797 798 return ie - beacon; 799 } 800 801 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info, 802 struct ieee80211_vif *vif) 803 { 804 u8 rate; 805 if (info->band == NL80211_BAND_2GHZ && !vif->p2p) 806 rate = IWL_FIRST_CCK_RATE; 807 else 808 rate = IWL_FIRST_OFDM_RATE; 809 810 return rate; 811 } 812 813 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, 814 struct ieee80211_vif *vif, 815 struct sk_buff *beacon, 816 struct iwl_tx_cmd *tx) 817 { 818 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 819 struct ieee80211_tx_info *info; 820 u8 rate; 821 u32 tx_flags; 822 823 info = IEEE80211_SKB_CB(beacon); 824 825 /* Set up TX command fields */ 826 tx->len = cpu_to_le16((u16)beacon->len); 827 tx->sta_id = mvmvif->bcast_sta.sta_id; 828 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 829 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; 830 tx_flags |= 831 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << 832 TX_CMD_FLG_BT_PRIO_POS; 833 tx->tx_flags = cpu_to_le32(tx_flags); 834 835 if (!fw_has_capa(&mvm->fw->ucode_capa, 836 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) 837 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 838 839 tx->rate_n_flags = 840 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 841 RATE_MCS_ANT_POS); 842 843 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); 844 845 tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); 846 if (rate == IWL_FIRST_CCK_RATE) 847 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); 848 849 } 850 851 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, 852 struct sk_buff *beacon, 853 void *data, int len) 854 { 855 struct iwl_host_cmd cmd = { 856 .id = BEACON_TEMPLATE_CMD, 857 .flags = CMD_ASYNC, 858 }; 859 860 cmd.len[0] = len; 861 cmd.data[0] = data; 862 cmd.dataflags[0] = 0; 863 cmd.len[1] = beacon->len; 864 cmd.data[1] = beacon->data; 865 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 866 867 return iwl_mvm_send_cmd(mvm, &cmd); 868 } 869 870 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, 871 struct ieee80211_vif *vif, 872 struct sk_buff *beacon) 873 { 874 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 875 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; 876 877 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 878 879 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 880 881 if (vif->type == NL80211_IFTYPE_AP) 882 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 883 &beacon_cmd.tim_size, 884 beacon->data, beacon->len); 885 886 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 887 sizeof(beacon_cmd)); 888 } 889 890 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, 891 struct ieee80211_vif *vif, 892 struct sk_buff *beacon) 893 { 894 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 895 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; 896 897 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 898 899 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 900 901 if (vif->type == NL80211_IFTYPE_AP) 902 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 903 &beacon_cmd.tim_size, 904 beacon->data, beacon->len); 905 906 beacon_cmd.csa_offset = 907 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 908 WLAN_EID_CHANNEL_SWITCH, 909 beacon->len)); 910 beacon_cmd.ecsa_offset = 911 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 912 WLAN_EID_EXT_CHANSWITCH_ANN, 913 beacon->len)); 914 915 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 916 sizeof(beacon_cmd)); 917 } 918 919 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, 920 struct ieee80211_vif *vif, 921 struct sk_buff *beacon) 922 { 923 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 924 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); 925 struct iwl_mac_beacon_cmd beacon_cmd = {}; 926 u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); 927 u16 flags; 928 struct ieee80211_chanctx_conf *ctx; 929 int channel; 930 931 flags = iwl_mvm_mac80211_idx_to_hwrate(rate); 932 933 if (rate == IWL_FIRST_CCK_RATE) 934 flags |= IWL_MAC_BEACON_CCK; 935 936 /* Enable FILS on PSC channels only */ 937 rcu_read_lock(); 938 ctx = rcu_dereference(vif->chanctx_conf); 939 channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq); 940 WARN_ON(channel == 0); 941 if (cfg80211_channel_is_psc(ctx->def.chan) && 942 !IWL_MVM_DISABLE_AP_FILS) { 943 flags |= IWL_MAC_BEACON_FILS; 944 beacon_cmd.short_ssid = 945 cpu_to_le32(~crc32_le(~0, vif->bss_conf.ssid, 946 vif->bss_conf.ssid_len)); 947 } 948 rcu_read_unlock(); 949 950 beacon_cmd.flags = cpu_to_le16(flags); 951 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); 952 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 953 954 if (vif->type == NL80211_IFTYPE_AP) 955 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 956 &beacon_cmd.tim_size, 957 beacon->data, beacon->len); 958 959 beacon_cmd.csa_offset = 960 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 961 WLAN_EID_CHANNEL_SWITCH, 962 beacon->len)); 963 beacon_cmd.ecsa_offset = 964 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 965 WLAN_EID_EXT_CHANSWITCH_ANN, 966 beacon->len)); 967 968 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 969 sizeof(beacon_cmd)); 970 } 971 972 int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 973 struct ieee80211_vif *vif, 974 struct sk_buff *beacon) 975 { 976 if (WARN_ON(!beacon)) 977 return -EINVAL; 978 979 if (IWL_MVM_NON_TRANSMITTING_AP) 980 return 0; 981 982 if (!fw_has_capa(&mvm->fw->ucode_capa, 983 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) 984 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); 985 986 if (fw_has_api(&mvm->fw->ucode_capa, 987 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) 988 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon); 989 990 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); 991 } 992 993 /* The beacon template for the AP/GO/IBSS has changed and needs update */ 994 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 995 struct ieee80211_vif *vif) 996 { 997 struct sk_buff *beacon; 998 int ret; 999 1000 WARN_ON(vif->type != NL80211_IFTYPE_AP && 1001 vif->type != NL80211_IFTYPE_ADHOC); 1002 1003 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); 1004 if (!beacon) 1005 return -ENOMEM; 1006 1007 #ifdef CONFIG_IWLWIFI_DEBUGFS 1008 if (mvm->beacon_inject_active) 1009 return -EBUSY; 1010 #endif 1011 1012 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); 1013 dev_kfree_skb(beacon); 1014 return ret; 1015 } 1016 1017 struct iwl_mvm_mac_ap_iterator_data { 1018 struct iwl_mvm *mvm; 1019 struct ieee80211_vif *vif; 1020 u32 beacon_device_ts; 1021 u16 beacon_int; 1022 }; 1023 1024 /* Find the beacon_device_ts and beacon_int for a managed interface */ 1025 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1026 struct ieee80211_vif *vif) 1027 { 1028 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1029 1030 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) 1031 return; 1032 1033 /* Station client has higher priority over P2P client*/ 1034 if (vif->p2p && data->beacon_device_ts) 1035 return; 1036 1037 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1038 data->beacon_int = vif->bss_conf.beacon_int; 1039 } 1040 1041 /* 1042 * Fill the specific data for mac context of type AP of P2P GO 1043 */ 1044 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1045 struct ieee80211_vif *vif, 1046 struct iwl_mac_ctx_cmd *cmd, 1047 struct iwl_mac_data_ap *ctxt_ap, 1048 bool add) 1049 { 1050 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1051 struct iwl_mvm_mac_ap_iterator_data data = { 1052 .mvm = mvm, 1053 .vif = vif, 1054 .beacon_device_ts = 0 1055 }; 1056 1057 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 1058 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); 1059 1060 /* 1061 * in AP mode, pass probe requests and beacons from other APs 1062 * (needed for ht protection); when there're no any associated 1063 * station don't ask FW to pass beacons to prevent unnecessary 1064 * wake-ups. 1065 */ 1066 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 1067 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { 1068 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 1069 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); 1070 } else { 1071 IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); 1072 } 1073 1074 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1075 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1076 vif->bss_conf.dtim_period); 1077 1078 if (!fw_has_api(&mvm->fw->ucode_capa, 1079 IWL_UCODE_TLV_API_STA_TYPE)) 1080 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue); 1081 1082 /* 1083 * Only set the beacon time when the MAC is being added, when we 1084 * just modify the MAC then we should keep the time -- the firmware 1085 * can otherwise have a "jumping" TBTT. 1086 */ 1087 if (add) { 1088 /* 1089 * If there is a station/P2P client interface which is 1090 * associated, set the AP's TBTT far enough from the station's 1091 * TBTT. Otherwise, set it to the current system time 1092 */ 1093 ieee80211_iterate_active_interfaces_atomic( 1094 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1095 iwl_mvm_mac_ap_iterator, &data); 1096 1097 if (data.beacon_device_ts) { 1098 u32 rand = (prandom_u32() % (64 - 36)) + 36; 1099 mvmvif->ap_beacon_time = data.beacon_device_ts + 1100 ieee80211_tu_to_usec(data.beacon_int * rand / 1101 100); 1102 } else { 1103 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm); 1104 } 1105 } 1106 1107 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1108 ctxt_ap->beacon_tsf = 0; /* unused */ 1109 1110 /* TODO: Assume that the beacon id == mac context id */ 1111 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1112 } 1113 1114 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1115 struct ieee80211_vif *vif, 1116 u32 action) 1117 { 1118 struct iwl_mac_ctx_cmd cmd = {}; 1119 1120 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1121 1122 /* Fill the common data for all mac context types */ 1123 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1124 1125 /* Fill the data specific for ap mode */ 1126 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, 1127 action == FW_CTXT_ACTION_ADD); 1128 1129 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1130 } 1131 1132 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1133 struct ieee80211_vif *vif, 1134 u32 action) 1135 { 1136 struct iwl_mac_ctx_cmd cmd = {}; 1137 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1138 1139 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1140 1141 /* Fill the common data for all mac context types */ 1142 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1143 1144 /* Fill the data specific for GO mode */ 1145 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, 1146 action == FW_CTXT_ACTION_ADD); 1147 1148 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1149 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1150 cmd.go.opp_ps_enabled = 1151 cpu_to_le32(!!(noa->oppps_ctwindow & 1152 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1153 1154 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1155 } 1156 1157 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1158 u32 action, bool force_assoc_off, 1159 const u8 *bssid_override) 1160 { 1161 switch (vif->type) { 1162 case NL80211_IFTYPE_STATION: 1163 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, 1164 force_assoc_off, 1165 bssid_override); 1166 case NL80211_IFTYPE_AP: 1167 if (!vif->p2p) 1168 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1169 else 1170 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1171 case NL80211_IFTYPE_MONITOR: 1172 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1173 case NL80211_IFTYPE_P2P_DEVICE: 1174 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1175 case NL80211_IFTYPE_ADHOC: 1176 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1177 default: 1178 break; 1179 } 1180 1181 return -EOPNOTSUPP; 1182 } 1183 1184 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1185 { 1186 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1187 int ret; 1188 1189 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1190 vif->addr, ieee80211_vif_type_p2p(vif))) 1191 return -EIO; 1192 1193 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, 1194 true, NULL); 1195 if (ret) 1196 return ret; 1197 1198 /* will only do anything at resume from D3 time */ 1199 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1200 1201 mvmvif->uploaded = true; 1202 return 0; 1203 } 1204 1205 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1206 bool force_assoc_off, const u8 *bssid_override) 1207 { 1208 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1209 1210 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1211 vif->addr, ieee80211_vif_type_p2p(vif))) 1212 return -EIO; 1213 1214 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, 1215 force_assoc_off, bssid_override); 1216 } 1217 1218 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1219 { 1220 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1221 struct iwl_mac_ctx_cmd cmd; 1222 int ret; 1223 1224 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1225 vif->addr, ieee80211_vif_type_p2p(vif))) 1226 return -EIO; 1227 1228 memset(&cmd, 0, sizeof(cmd)); 1229 1230 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1231 mvmvif->color)); 1232 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1233 1234 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 1235 sizeof(cmd), &cmd); 1236 if (ret) { 1237 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); 1238 return ret; 1239 } 1240 1241 mvmvif->uploaded = false; 1242 1243 if (vif->type == NL80211_IFTYPE_MONITOR) { 1244 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); 1245 iwl_mvm_dealloc_snif_sta(mvm); 1246 } 1247 1248 return 0; 1249 } 1250 1251 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, 1252 struct ieee80211_vif *csa_vif, u32 gp2, 1253 bool tx_success) 1254 { 1255 struct iwl_mvm_vif *mvmvif = 1256 iwl_mvm_vif_from_mac80211(csa_vif); 1257 1258 /* Don't start to countdown from a failed beacon */ 1259 if (!tx_success && !mvmvif->csa_countdown) 1260 return; 1261 1262 mvmvif->csa_countdown = true; 1263 1264 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) { 1265 int c = ieee80211_beacon_update_cntdwn(csa_vif); 1266 1267 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); 1268 if (csa_vif->p2p && 1269 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && 1270 tx_success) { 1271 u32 rel_time = (c + 1) * 1272 csa_vif->bss_conf.beacon_int - 1273 IWL_MVM_CHANNEL_SWITCH_TIME_GO; 1274 u32 apply_time = gp2 + rel_time * 1024; 1275 1276 iwl_mvm_schedule_csa_period(mvm, csa_vif, 1277 IWL_MVM_CHANNEL_SWITCH_TIME_GO - 1278 IWL_MVM_CHANNEL_SWITCH_MARGIN, 1279 apply_time); 1280 } 1281 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { 1282 /* we don't have CSA NoA scheduled yet, switch now */ 1283 ieee80211_csa_finish(csa_vif); 1284 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1285 } 1286 } 1287 1288 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, 1289 struct iwl_rx_cmd_buffer *rxb) 1290 { 1291 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1292 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; 1293 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data; 1294 struct ieee80211_vif *csa_vif; 1295 struct ieee80211_vif *tx_blocked_vif; 1296 struct agg_tx_status *agg_status; 1297 u16 status; 1298 1299 lockdep_assert_held(&mvm->mutex); 1300 1301 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); 1302 1303 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) { 1304 struct iwl_mvm_tx_resp *beacon_notify_hdr = 1305 &beacon_v5->beacon_notify_hdr; 1306 1307 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0; 1308 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); 1309 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; 1310 IWL_DEBUG_RX(mvm, 1311 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n", 1312 status, beacon_notify_hdr->failure_frame, 1313 le64_to_cpu(beacon->tsf), 1314 mvm->ap_last_beacon_gp2, 1315 le32_to_cpu(beacon_notify_hdr->initial_rate)); 1316 } else { 1317 mvm->ibss_manager = beacon->ibss_mgr_status != 0; 1318 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK; 1319 IWL_DEBUG_RX(mvm, 1320 "beacon status %#x tsf:0x%016llX gp2:0x%X\n", 1321 status, le64_to_cpu(beacon->tsf), 1322 mvm->ap_last_beacon_gp2); 1323 } 1324 1325 csa_vif = rcu_dereference_protected(mvm->csa_vif, 1326 lockdep_is_held(&mvm->mutex)); 1327 if (unlikely(csa_vif && csa_vif->csa_active)) 1328 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, 1329 (status == TX_STATUS_SUCCESS)); 1330 1331 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, 1332 lockdep_is_held(&mvm->mutex)); 1333 if (unlikely(tx_blocked_vif)) { 1334 struct iwl_mvm_vif *mvmvif = 1335 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 1336 1337 /* 1338 * The channel switch is started and we have blocked the 1339 * stations. If this is the first beacon (the timeout wasn't 1340 * set), set the unblock timeout, otherwise countdown 1341 */ 1342 if (!mvm->csa_tx_block_bcn_timeout) 1343 mvm->csa_tx_block_bcn_timeout = 1344 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; 1345 else 1346 mvm->csa_tx_block_bcn_timeout--; 1347 1348 /* Check if the timeout is expired, and unblock tx */ 1349 if (mvm->csa_tx_block_bcn_timeout == 0) { 1350 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 1351 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 1352 } 1353 } 1354 } 1355 1356 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1357 struct iwl_rx_cmd_buffer *rxb) 1358 { 1359 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1360 struct iwl_missed_beacons_notif *mb = (void *)pkt->data; 1361 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; 1362 struct iwl_fw_dbg_trigger_tlv *trigger; 1363 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; 1364 u32 rx_missed_bcon, rx_missed_bcon_since_rx; 1365 struct ieee80211_vif *vif; 1366 u32 id = le32_to_cpu(mb->mac_id); 1367 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt }; 1368 1369 IWL_DEBUG_INFO(mvm, 1370 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", 1371 le32_to_cpu(mb->mac_id), 1372 le32_to_cpu(mb->consec_missed_beacons), 1373 le32_to_cpu(mb->consec_missed_beacons_since_last_rx), 1374 le32_to_cpu(mb->num_recvd_beacons), 1375 le32_to_cpu(mb->num_expected_beacons)); 1376 1377 rcu_read_lock(); 1378 1379 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1380 if (!vif) 1381 goto out; 1382 1383 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons); 1384 rx_missed_bcon_since_rx = 1385 le32_to_cpu(mb->consec_missed_beacons_since_last_rx); 1386 /* 1387 * TODO: the threshold should be adjusted based on latency conditions, 1388 * and/or in case of a CS flow on one of the other AP vifs. 1389 */ 1390 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) 1391 iwl_mvm_connection_loss(mvm, vif, "missed beacons"); 1392 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) 1393 ieee80211_beacon_loss(vif); 1394 1395 iwl_dbg_tlv_time_point(&mvm->fwrt, 1396 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data); 1397 1398 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1399 FW_DBG_TRIGGER_MISSED_BEACONS); 1400 if (!trigger) 1401 goto out; 1402 1403 bcon_trig = (void *)trigger->data; 1404 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); 1405 stop_trig_missed_bcon_since_rx = 1406 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); 1407 1408 /* TODO: implement start trigger */ 1409 1410 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || 1411 rx_missed_bcon >= stop_trig_missed_bcon) 1412 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); 1413 1414 out: 1415 rcu_read_unlock(); 1416 } 1417 1418 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, 1419 struct iwl_rx_cmd_buffer *rxb) 1420 { 1421 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1422 struct iwl_stored_beacon_notif *sb = (void *)pkt->data; 1423 struct ieee80211_rx_status rx_status; 1424 struct sk_buff *skb; 1425 u32 size = le32_to_cpu(sb->byte_count); 1426 1427 if (size == 0) 1428 return; 1429 1430 skb = alloc_skb(size, GFP_ATOMIC); 1431 if (!skb) { 1432 IWL_ERR(mvm, "alloc_skb failed\n"); 1433 return; 1434 } 1435 1436 /* update rx_status according to the notification's metadata */ 1437 memset(&rx_status, 0, sizeof(rx_status)); 1438 rx_status.mactime = le64_to_cpu(sb->tsf); 1439 /* TSF as indicated by the firmware is at INA time */ 1440 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; 1441 rx_status.device_timestamp = le32_to_cpu(sb->system_time); 1442 rx_status.band = 1443 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 1444 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 1445 rx_status.freq = 1446 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), 1447 rx_status.band); 1448 1449 /* copy the data */ 1450 skb_put_data(skb, sb->data, size); 1451 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 1452 1453 /* pass it as regular rx to mac80211 */ 1454 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); 1455 } 1456 1457 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, 1458 struct iwl_rx_cmd_buffer *rxb) 1459 { 1460 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1461 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; 1462 struct iwl_probe_resp_data *old_data, *new_data; 1463 int len = iwl_rx_packet_payload_len(pkt); 1464 u32 id = le32_to_cpu(notif->mac_id); 1465 struct ieee80211_vif *vif; 1466 struct iwl_mvm_vif *mvmvif; 1467 1468 if (WARN_ON_ONCE(len < sizeof(*notif))) 1469 return; 1470 1471 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", 1472 notif->noa_active, notif->csa_counter); 1473 1474 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false); 1475 if (!vif) 1476 return; 1477 1478 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1479 1480 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); 1481 if (!new_data) 1482 return; 1483 1484 memcpy(&new_data->notif, notif, sizeof(new_data->notif)); 1485 1486 /* noa_attr contains 1 reserved byte, need to substruct it */ 1487 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + 1488 sizeof(new_data->notif.noa_attr) - 1; 1489 1490 /* 1491 * If it's a one time NoA, only one descriptor is needed, 1492 * adjust the length according to len_low. 1493 */ 1494 if (new_data->notif.noa_attr.len_low == 1495 sizeof(struct ieee80211_p2p_noa_desc) + 2) 1496 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); 1497 1498 old_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1499 lockdep_is_held(&mvmvif->mvm->mutex)); 1500 rcu_assign_pointer(mvmvif->probe_resp_data, new_data); 1501 1502 if (old_data) 1503 kfree_rcu(old_data, rcu_head); 1504 1505 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && 1506 notif->csa_counter >= 1) 1507 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter); 1508 } 1509 1510 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm, 1511 struct iwl_rx_cmd_buffer *rxb) 1512 { 1513 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1514 struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data; 1515 struct ieee80211_vif *csa_vif, *vif; 1516 struct iwl_mvm_vif *mvmvif; 1517 int len = iwl_rx_packet_payload_len(pkt); 1518 u32 id_n_color, csa_id, mac_id; 1519 1520 if (WARN_ON_ONCE(len < sizeof(*notif))) 1521 return; 1522 1523 id_n_color = le32_to_cpu(notif->id_and_color); 1524 mac_id = id_n_color & FW_CTXT_ID_MSK; 1525 1526 if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER)) 1527 return; 1528 1529 rcu_read_lock(); 1530 vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]); 1531 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1532 1533 switch (vif->type) { 1534 case NL80211_IFTYPE_AP: 1535 csa_vif = rcu_dereference(mvm->csa_vif); 1536 if (WARN_ON(!csa_vif || !csa_vif->csa_active || 1537 csa_vif != vif)) 1538 goto out_unlock; 1539 1540 csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 1541 if (WARN(csa_id != id_n_color, 1542 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", 1543 csa_id, id_n_color)) 1544 goto out_unlock; 1545 1546 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); 1547 1548 schedule_delayed_work(&mvm->cs_tx_unblock_dwork, 1549 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * 1550 csa_vif->bss_conf.beacon_int)); 1551 1552 ieee80211_csa_finish(csa_vif); 1553 1554 rcu_read_unlock(); 1555 1556 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1557 return; 1558 case NL80211_IFTYPE_STATION: 1559 iwl_mvm_csa_client_absent(mvm, vif); 1560 cancel_delayed_work(&mvmvif->csa_work); 1561 ieee80211_chswitch_done(vif, true); 1562 break; 1563 default: 1564 /* should never happen */ 1565 WARN_ON_ONCE(1); 1566 break; 1567 } 1568 out_unlock: 1569 rcu_read_unlock(); 1570 } 1571 1572 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm, 1573 struct iwl_rx_cmd_buffer *rxb) 1574 { 1575 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1576 struct iwl_missed_vap_notif *mb = (void *)pkt->data; 1577 struct ieee80211_vif *vif; 1578 u32 id = le32_to_cpu(mb->mac_id); 1579 1580 IWL_DEBUG_INFO(mvm, 1581 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n", 1582 le32_to_cpu(mb->mac_id), 1583 mb->num_beacon_intervals_elapsed, 1584 mb->profile_periodicity); 1585 1586 rcu_read_lock(); 1587 1588 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1589 if (vif) 1590 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon"); 1591 1592 rcu_read_unlock(); 1593 } 1594