mac-ctxt.c revision 6e97b0d2984a7f80b1d6ba4f62d84d2ce8106069
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 - 2013 Intel Corporation. All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of version 2 of the GNU General Public License as 12 * published by the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 22 * USA 23 * 24 * The full GNU General Public License is included in this distribution 25 * in the file called COPYING. 26 * 27 * Contact Information: 28 * Intel Linux Wireless <ilw@linux.intel.com> 29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 30 * 31 * BSD LICENSE 32 * 33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 40 * * Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * * Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in 44 * the documentation and/or other materials provided with the 45 * distribution. 46 * * Neither the name Intel Corporation nor the names of its 47 * contributors may be used to endorse or promote products derived 48 * from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 * 62 *****************************************************************************/ 63 64#include <linux/etherdevice.h> 65#include <net/mac80211.h> 66#include "iwl-io.h" 67#include "iwl-prph.h" 68#include "fw-api.h" 69#include "mvm.h" 70 71const u8 iwl_mvm_ac_to_tx_fifo[] = { 72 IWL_MVM_TX_FIFO_VO, 73 IWL_MVM_TX_FIFO_VI, 74 IWL_MVM_TX_FIFO_BE, 75 IWL_MVM_TX_FIFO_BK, 76}; 77 78struct iwl_mvm_mac_iface_iterator_data { 79 struct iwl_mvm *mvm; 80 struct ieee80211_vif *vif; 81 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; 82 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; 83 unsigned long used_hw_queues[BITS_TO_LONGS(IWL_MVM_MAX_QUEUES)]; 84 enum iwl_tsf_id preferred_tsf; 85 bool found_vif; 86}; 87 88static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, 89 struct ieee80211_vif *vif) 90{ 91 struct iwl_mvm_mac_iface_iterator_data *data = _data; 92 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 93 94 /* Skip the interface for which we are trying to assign a tsf_id */ 95 if (vif == data->vif) 96 return; 97 98 /* 99 * The TSF is a hardware/firmware resource, there are 4 and 100 * the driver should assign and free them as needed. However, 101 * there are cases where 2 MACs should share the same TSF ID 102 * for the purpose of clock sync, an optimization to avoid 103 * clock drift causing overlapping TBTTs/DTIMs for a GO and 104 * client in the system. 105 * 106 * The firmware will decide according to the MAC type which 107 * will be the master and slave. Clients that need to sync 108 * with a remote station will be the master, and an AP or GO 109 * will be the slave. 110 * 111 * Depending on the new interface type it can be slaved to 112 * or become the master of an existing interface. 113 */ 114 switch (data->vif->type) { 115 case NL80211_IFTYPE_STATION: 116 /* 117 * The new interface is client, so if the existing one 118 * we're iterating is an AP, and both interfaces have the 119 * same beacon interval, the same TSF should be used to 120 * avoid drift between the new client and existing AP, 121 * the existing AP will get drift updates from the new 122 * client context in this case 123 */ 124 if (vif->type == NL80211_IFTYPE_AP) { 125 if (data->preferred_tsf == NUM_TSF_IDS && 126 test_bit(mvmvif->tsf_id, data->available_tsf_ids) && 127 (vif->bss_conf.beacon_int == 128 data->vif->bss_conf.beacon_int)) { 129 data->preferred_tsf = mvmvif->tsf_id; 130 return; 131 } 132 } 133 break; 134 case NL80211_IFTYPE_AP: 135 /* 136 * The new interface is AP/GO, so in case both interfaces 137 * have the same beacon interval, it should get drift 138 * updates from an existing client or use the same 139 * TSF as an existing GO. There's no drift between 140 * TSFs internally but if they used different TSFs 141 * then a new client MAC could update one of them 142 * and cause drift that way. 143 */ 144 if (vif->type == NL80211_IFTYPE_STATION || 145 vif->type == NL80211_IFTYPE_AP) { 146 if (data->preferred_tsf == NUM_TSF_IDS && 147 test_bit(mvmvif->tsf_id, data->available_tsf_ids) && 148 (vif->bss_conf.beacon_int == 149 data->vif->bss_conf.beacon_int)) { 150 data->preferred_tsf = mvmvif->tsf_id; 151 return; 152 } 153 } 154 break; 155 default: 156 /* 157 * For all other interface types there's no need to 158 * take drift into account. Either they're exclusive 159 * like IBSS and monitor, or we don't care much about 160 * their TSF (like P2P Device), but we won't be able 161 * to share the TSF resource. 162 */ 163 break; 164 } 165 166 /* 167 * Unless we exited above, we can't share the TSF resource 168 * that the virtual interface we're iterating over is using 169 * with the new one, so clear the available bit and if this 170 * was the preferred one, reset that as well. 171 */ 172 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); 173 174 if (data->preferred_tsf == mvmvif->tsf_id) 175 data->preferred_tsf = NUM_TSF_IDS; 176} 177 178static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, 179 struct ieee80211_vif *vif) 180{ 181 struct iwl_mvm_mac_iface_iterator_data *data = _data; 182 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 183 u32 ac; 184 185 /* Iterator may already find the interface being added -- skip it */ 186 if (vif == data->vif) { 187 data->found_vif = true; 188 return; 189 } 190 191 /* Mark the queues used by the vif */ 192 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 193 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 194 __set_bit(vif->hw_queue[ac], data->used_hw_queues); 195 196 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) 197 __set_bit(vif->cab_queue, data->used_hw_queues); 198 199 /* Mark MAC IDs as used by clearing the available bit, and 200 * (below) mark TSFs as used if their existing use is not 201 * compatible with the new interface type. 202 * No locking or atomic bit operations are needed since the 203 * data is on the stack of the caller function. 204 */ 205 __clear_bit(mvmvif->id, data->available_mac_ids); 206 207 /* find a suitable tsf_id */ 208 iwl_mvm_mac_tsf_id_iter(_data, mac, vif); 209} 210 211/* 212 * Get the mask of the queus used by the vif 213 */ 214u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm, 215 struct ieee80211_vif *vif) 216{ 217 u32 qmask = 0, ac; 218 219 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 220 return BIT(IWL_MVM_OFFCHANNEL_QUEUE); 221 222 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 223 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 224 qmask |= BIT(vif->hw_queue[ac]); 225 226 return qmask; 227} 228 229void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, 230 struct ieee80211_vif *vif) 231{ 232 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 233 struct iwl_mvm_mac_iface_iterator_data data = { 234 .mvm = mvm, 235 .vif = vif, 236 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 237 /* no preference yet */ 238 .preferred_tsf = NUM_TSF_IDS, 239 }; 240 241 ieee80211_iterate_active_interfaces_atomic( 242 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 243 iwl_mvm_mac_tsf_id_iter, &data); 244 245 if (data.preferred_tsf != NUM_TSF_IDS) 246 mvmvif->tsf_id = data.preferred_tsf; 247 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) 248 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 249 NUM_TSF_IDS); 250} 251 252static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm, 253 struct ieee80211_vif *vif) 254{ 255 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 256 struct iwl_mvm_mac_iface_iterator_data data = { 257 .mvm = mvm, 258 .vif = vif, 259 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, 260 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 261 /* no preference yet */ 262 .preferred_tsf = NUM_TSF_IDS, 263 .used_hw_queues = { 264 BIT(IWL_MVM_OFFCHANNEL_QUEUE) | 265 BIT(mvm->aux_queue) | 266 BIT(IWL_MVM_CMD_QUEUE) 267 }, 268 .found_vif = false, 269 }; 270 u32 ac; 271 int ret, i; 272 273 /* 274 * Allocate a MAC ID and a TSF for this MAC, along with the queues 275 * and other resources. 276 */ 277 278 /* 279 * Before the iterator, we start with all MAC IDs and TSFs available. 280 * 281 * During iteration, all MAC IDs are cleared that are in use by other 282 * virtual interfaces, and all TSF IDs are cleared that can't be used 283 * by this new virtual interface because they're used by an interface 284 * that can't share it with the new one. 285 * At the same time, we check if there's a preferred TSF in the case 286 * that we should share it with another interface. 287 */ 288 289 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ 290 switch (vif->type) { 291 case NL80211_IFTYPE_ADHOC: 292 break; 293 case NL80211_IFTYPE_STATION: 294 if (!vif->p2p) 295 break; 296 /* fall through */ 297 default: 298 __clear_bit(0, data.available_mac_ids); 299 } 300 301 ieee80211_iterate_active_interfaces_atomic( 302 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 303 iwl_mvm_mac_iface_iterator, &data); 304 305 /* 306 * In the case we're getting here during resume, it's similar to 307 * firmware restart, and with RESUME_ALL the iterator will find 308 * the vif being added already. 309 * We don't want to reassign any IDs in either case since doing 310 * so would probably assign different IDs (as interfaces aren't 311 * necessarily added in the same order), but the old IDs were 312 * preserved anyway, so skip ID assignment for both resume and 313 * recovery. 314 */ 315 if (data.found_vif) 316 return 0; 317 318 /* Therefore, in recovery, we can't get here */ 319 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 320 return -EBUSY; 321 322 mvmvif->id = find_first_bit(data.available_mac_ids, 323 NUM_MAC_INDEX_DRIVER); 324 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 325 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 326 ret = -EIO; 327 goto exit_fail; 328 } 329 330 if (data.preferred_tsf != NUM_TSF_IDS) 331 mvmvif->tsf_id = data.preferred_tsf; 332 else 333 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 334 NUM_TSF_IDS); 335 if (mvmvif->tsf_id == NUM_TSF_IDS) { 336 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 337 ret = -EIO; 338 goto exit_fail; 339 } 340 341 mvmvif->color = 0; 342 343 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 344 mvmvif->time_event_data.id = TE_MAX; 345 346 /* No need to allocate data queues to P2P Device MAC.*/ 347 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 348 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 349 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; 350 351 return 0; 352 } 353 354 /* Find available queues, and allocate them to the ACs */ 355 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 356 u8 queue = find_first_zero_bit(data.used_hw_queues, 357 mvm->first_agg_queue); 358 359 if (queue >= mvm->first_agg_queue) { 360 IWL_ERR(mvm, "Failed to allocate queue\n"); 361 ret = -EIO; 362 goto exit_fail; 363 } 364 365 __set_bit(queue, data.used_hw_queues); 366 vif->hw_queue[ac] = queue; 367 } 368 369 /* Allocate the CAB queue for softAP and GO interfaces */ 370 if (vif->type == NL80211_IFTYPE_AP) { 371 u8 queue = find_first_zero_bit(data.used_hw_queues, 372 mvm->first_agg_queue); 373 374 if (queue >= mvm->first_agg_queue) { 375 IWL_ERR(mvm, "Failed to allocate cab queue\n"); 376 ret = -EIO; 377 goto exit_fail; 378 } 379 380 vif->cab_queue = queue; 381 } else { 382 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; 383 } 384 385 mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT; 386 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; 387 388 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) 389 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; 390 391 return 0; 392 393exit_fail: 394 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 395 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue)); 396 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; 397 return ret; 398} 399 400int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 401{ 402 u32 ac; 403 int ret; 404 405 lockdep_assert_held(&mvm->mutex); 406 407 ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif); 408 if (ret) 409 return ret; 410 411 switch (vif->type) { 412 case NL80211_IFTYPE_P2P_DEVICE: 413 iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE, 414 IWL_MVM_TX_FIFO_VO); 415 break; 416 case NL80211_IFTYPE_AP: 417 iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue, 418 IWL_MVM_TX_FIFO_MCAST); 419 /* fall through */ 420 default: 421 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 422 iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac], 423 iwl_mvm_ac_to_tx_fifo[ac]); 424 break; 425 } 426 427 return 0; 428} 429 430void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 431{ 432 int ac; 433 434 lockdep_assert_held(&mvm->mutex); 435 436 switch (vif->type) { 437 case NL80211_IFTYPE_P2P_DEVICE: 438 iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE); 439 break; 440 case NL80211_IFTYPE_AP: 441 iwl_trans_txq_disable(mvm->trans, vif->cab_queue); 442 /* fall through */ 443 default: 444 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 445 iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]); 446 } 447} 448 449static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 450 struct ieee80211_vif *vif, 451 enum ieee80211_band band, 452 u8 *cck_rates, u8 *ofdm_rates) 453{ 454 struct ieee80211_supported_band *sband; 455 unsigned long basic = vif->bss_conf.basic_rates; 456 int lowest_present_ofdm = 100; 457 int lowest_present_cck = 100; 458 u8 cck = 0; 459 u8 ofdm = 0; 460 int i; 461 462 sband = mvm->hw->wiphy->bands[band]; 463 464 for_each_set_bit(i, &basic, BITS_PER_LONG) { 465 int hw = sband->bitrates[i].hw_value; 466 if (hw >= IWL_FIRST_OFDM_RATE) { 467 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 468 if (lowest_present_ofdm > hw) 469 lowest_present_ofdm = hw; 470 } else { 471 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 472 473 cck |= BIT(hw); 474 if (lowest_present_cck > hw) 475 lowest_present_cck = hw; 476 } 477 } 478 479 /* 480 * Now we've got the basic rates as bitmaps in the ofdm and cck 481 * variables. This isn't sufficient though, as there might not 482 * be all the right rates in the bitmap. E.g. if the only basic 483 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 484 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 485 * 486 * [...] a STA responding to a received frame shall transmit 487 * its Control Response frame [...] at the highest rate in the 488 * BSSBasicRateSet parameter that is less than or equal to the 489 * rate of the immediately previous frame in the frame exchange 490 * sequence ([...]) and that is of the same modulation class 491 * ([...]) as the received frame. If no rate contained in the 492 * BSSBasicRateSet parameter meets these conditions, then the 493 * control frame sent in response to a received frame shall be 494 * transmitted at the highest mandatory rate of the PHY that is 495 * less than or equal to the rate of the received frame, and 496 * that is of the same modulation class as the received frame. 497 * 498 * As a consequence, we need to add all mandatory rates that are 499 * lower than all of the basic rates to these bitmaps. 500 */ 501 502 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 503 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 504 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 505 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 506 /* 6M already there or needed so always add */ 507 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 508 509 /* 510 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 511 * Note, however: 512 * - if no CCK rates are basic, it must be ERP since there must 513 * be some basic rates at all, so they're OFDM => ERP PHY 514 * (or we're in 5 GHz, and the cck bitmap will never be used) 515 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 516 * - if 5.5M is basic, 1M and 2M are mandatory 517 * - if 2M is basic, 1M is mandatory 518 * - if 1M is basic, that's the only valid ACK rate. 519 * As a consequence, it's not as complicated as it sounds, just add 520 * any lower rates to the ACK rate bitmap. 521 */ 522 if (IWL_RATE_11M_INDEX < lowest_present_cck) 523 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 524 if (IWL_RATE_5M_INDEX < lowest_present_cck) 525 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 526 if (IWL_RATE_2M_INDEX < lowest_present_cck) 527 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 528 /* 1M already there or needed so always add */ 529 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 530 531 *cck_rates = cck; 532 *ofdm_rates = ofdm; 533} 534 535static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, 536 struct ieee80211_vif *vif, 537 struct iwl_mac_ctx_cmd *cmd) 538{ 539 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 540 u8 protection_mode = vif->bss_conf.ht_operation_mode & 541 IEEE80211_HT_OP_MODE_PROTECTION; 542 /* The fw does not distinguish between ht and fat */ 543 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 544 545 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 546 /* 547 * See section 9.23.3.1 of IEEE 80211-2012. 548 * Nongreenfield HT STAs Present is not supported. 549 */ 550 switch (protection_mode) { 551 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 552 break; 553 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 554 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 555 cmd->protection_flags |= cpu_to_le32(ht_flag); 556 break; 557 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 558 /* Protect when channel wider than 20MHz */ 559 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) 560 cmd->protection_flags |= cpu_to_le32(ht_flag); 561 break; 562 default: 563 IWL_ERR(mvm, "Illegal protection mode %d\n", 564 protection_mode); 565 break; 566 } 567} 568 569static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 570 struct ieee80211_vif *vif, 571 struct iwl_mac_ctx_cmd *cmd, 572 u32 action) 573{ 574 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 575 struct ieee80211_chanctx_conf *chanctx; 576 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & 577 IEEE80211_HT_OP_MODE_PROTECTION); 578 u8 cck_ack_rates, ofdm_ack_rates; 579 int i; 580 581 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 582 mvmvif->color)); 583 cmd->action = cpu_to_le32(action); 584 585 switch (vif->type) { 586 case NL80211_IFTYPE_STATION: 587 if (vif->p2p) 588 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); 589 else 590 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); 591 break; 592 case NL80211_IFTYPE_AP: 593 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); 594 break; 595 case NL80211_IFTYPE_MONITOR: 596 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); 597 break; 598 case NL80211_IFTYPE_P2P_DEVICE: 599 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); 600 break; 601 case NL80211_IFTYPE_ADHOC: 602 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); 603 break; 604 default: 605 WARN_ON_ONCE(1); 606 } 607 608 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 609 610 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 611 if (vif->bss_conf.bssid) 612 memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN); 613 else 614 eth_broadcast_addr(cmd->bssid_addr); 615 616 rcu_read_lock(); 617 chanctx = rcu_dereference(vif->chanctx_conf); 618 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band 619 : IEEE80211_BAND_2GHZ, 620 &cck_ack_rates, &ofdm_ack_rates); 621 rcu_read_unlock(); 622 623 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); 624 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 625 626 cmd->cck_short_preamble = 627 cpu_to_le32(vif->bss_conf.use_short_preamble ? 628 MAC_FLG_SHORT_PREAMBLE : 0); 629 cmd->short_slot = 630 cpu_to_le32(vif->bss_conf.use_short_slot ? 631 MAC_FLG_SHORT_SLOT : 0); 632 633 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 634 u8 txf = iwl_mvm_ac_to_tx_fifo[i]; 635 636 cmd->ac[txf].cw_min = 637 cpu_to_le16(mvmvif->queue_params[i].cw_min); 638 cmd->ac[txf].cw_max = 639 cpu_to_le16(mvmvif->queue_params[i].cw_max); 640 cmd->ac[txf].edca_txop = 641 cpu_to_le16(mvmvif->queue_params[i].txop * 32); 642 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs; 643 cmd->ac[txf].fifos_mask = BIT(txf); 644 } 645 646 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 647 if (vif->type == NL80211_IFTYPE_AP) 648 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= 649 BIT(IWL_MVM_TX_FIFO_MCAST); 650 651 if (vif->bss_conf.qos) 652 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 653 654 /* Don't use cts to self as the fw doesn't support it currently. */ 655 if (vif->bss_conf.use_cts_prot) { 656 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); 657 if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 8) 658 cmd->protection_flags |= 659 cpu_to_le32(MAC_PROT_FLG_SELF_CTS_EN); 660 } 661 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 662 vif->bss_conf.use_cts_prot, 663 vif->bss_conf.ht_operation_mode); 664 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) 665 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 666 if (ht_enabled) 667 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); 668 669 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 670} 671 672static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 673 struct iwl_mac_ctx_cmd *cmd) 674{ 675 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC, 676 sizeof(*cmd), cmd); 677 if (ret) 678 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", 679 le32_to_cpu(cmd->action), ret); 680 return ret; 681} 682 683/* 684 * Fill the specific data for mac context of type station or p2p client 685 */ 686static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm, 687 struct ieee80211_vif *vif, 688 struct iwl_mac_data_sta *ctxt_sta, 689 bool force_assoc_off) 690{ 691 /* We need the dtim_period to set the MAC as associated */ 692 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && 693 !force_assoc_off) { 694 u32 dtim_offs; 695 696 /* 697 * The DTIM count counts down, so when it is N that means N 698 * more beacon intervals happen until the DTIM TBTT. Therefore 699 * add this to the current time. If that ends up being in the 700 * future, the firmware will handle it. 701 * 702 * Also note that the system_timestamp (which we get here as 703 * "sync_device_ts") and TSF timestamp aren't at exactly the 704 * same offset in the frame -- the TSF is at the first symbol 705 * of the TSF, the system timestamp is at signal acquisition 706 * time. This means there's an offset between them of at most 707 * a few hundred microseconds (24 * 8 bits + PLCP time gives 708 * 384us in the longest case), this is currently not relevant 709 * as the firmware wakes up around 2ms before the TBTT. 710 */ 711 dtim_offs = vif->bss_conf.sync_dtim_count * 712 vif->bss_conf.beacon_int; 713 /* convert TU to usecs */ 714 dtim_offs *= 1024; 715 716 ctxt_sta->dtim_tsf = 717 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); 718 ctxt_sta->dtim_time = 719 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); 720 721 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 722 le64_to_cpu(ctxt_sta->dtim_tsf), 723 le32_to_cpu(ctxt_sta->dtim_time), 724 dtim_offs); 725 726 ctxt_sta->is_assoc = cpu_to_le32(1); 727 } else { 728 ctxt_sta->is_assoc = cpu_to_le32(0); 729 } 730 731 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 732 ctxt_sta->bi_reciprocal = 733 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); 734 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 735 vif->bss_conf.dtim_period); 736 ctxt_sta->dtim_reciprocal = 737 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * 738 vif->bss_conf.dtim_period)); 739 740 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 741 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); 742} 743 744static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm, 745 struct ieee80211_vif *vif, 746 u32 action) 747{ 748 struct iwl_mac_ctx_cmd cmd = {}; 749 750 WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p); 751 752 /* Fill the common data for all mac context types */ 753 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); 754 755 /* Allow beacons to pass through as long as we are not associated,or we 756 * do not have dtim period information */ 757 if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period) 758 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 759 else 760 cmd.filter_flags &= ~cpu_to_le32(MAC_FILTER_IN_BEACON); 761 762 /* Fill the data specific for station mode */ 763 iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta, 764 action == FW_CTXT_ACTION_ADD); 765 766 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 767} 768 769static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm, 770 struct ieee80211_vif *vif, 771 u32 action) 772{ 773 struct iwl_mac_ctx_cmd cmd = {}; 774 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 775 776 WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p); 777 778 /* Fill the common data for all mac context types */ 779 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); 780 781 /* Fill the data specific for station mode */ 782 iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta, 783 action == FW_CTXT_ACTION_ADD); 784 785 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & 786 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 787 788 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 789} 790 791static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 792 struct ieee80211_vif *vif, 793 u32 action) 794{ 795 struct iwl_mac_ctx_cmd cmd = {}; 796 797 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 798 799 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); 800 801 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 802 MAC_FILTER_IN_CONTROL_AND_MGMT | 803 MAC_FILTER_IN_BEACON | 804 MAC_FILTER_IN_PROBE_REQUEST | 805 MAC_FILTER_IN_CRC32); 806 mvm->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS; 807 808 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 809} 810 811static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 812 struct ieee80211_vif *vif, 813 u32 action) 814{ 815 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 816 struct iwl_mac_ctx_cmd cmd = {}; 817 818 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 819 820 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); 821 822 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 823 MAC_FILTER_IN_PROBE_REQUEST); 824 825 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ 826 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); 827 cmd.ibss.bi_reciprocal = 828 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); 829 830 /* TODO: Assumes that the beacon id == mac context id */ 831 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); 832 833 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 834} 835 836struct iwl_mvm_go_iterator_data { 837 bool go_active; 838}; 839 840static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) 841{ 842 struct iwl_mvm_go_iterator_data *data = _data; 843 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 844 845 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 846 mvmvif->ap_ibss_active) 847 data->go_active = true; 848} 849 850static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, 851 struct ieee80211_vif *vif, 852 u32 action) 853{ 854 struct iwl_mac_ctx_cmd cmd = {}; 855 struct iwl_mvm_go_iterator_data data = {}; 856 857 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); 858 859 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); 860 861 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); 862 863 /* Override the filter flags to accept only probe requests */ 864 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 865 866 /* 867 * This flag should be set to true when the P2P Device is 868 * discoverable and there is at least another active P2P GO. Settings 869 * this flag will allow the P2P Device to be discoverable on other 870 * channels in addition to its listen channel. 871 * Note that this flag should not be set in other cases as it opens the 872 * Rx filters on all MAC and increases the number of interrupts. 873 */ 874 ieee80211_iterate_active_interfaces_atomic( 875 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 876 iwl_mvm_go_iterator, &data); 877 878 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); 879 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 880} 881 882static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, 883 struct iwl_mac_beacon_cmd *beacon_cmd, 884 u8 *beacon, u32 frame_size) 885{ 886 u32 tim_idx; 887 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 888 889 /* The index is relative to frame start but we start looking at the 890 * variable-length part of the beacon. */ 891 tim_idx = mgmt->u.beacon.variable - beacon; 892 893 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 894 while ((tim_idx < (frame_size - 2)) && 895 (beacon[tim_idx] != WLAN_EID_TIM)) 896 tim_idx += beacon[tim_idx+1] + 2; 897 898 /* If TIM field was found, set variables */ 899 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 900 beacon_cmd->tim_idx = cpu_to_le32(tim_idx); 901 beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]); 902 } else { 903 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); 904 } 905} 906 907static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 908 struct ieee80211_vif *vif, 909 struct sk_buff *beacon) 910{ 911 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 912 struct iwl_host_cmd cmd = { 913 .id = BEACON_TEMPLATE_CMD, 914 .flags = CMD_ASYNC, 915 }; 916 struct iwl_mac_beacon_cmd beacon_cmd = {}; 917 struct ieee80211_tx_info *info; 918 u32 beacon_skb_len; 919 u32 rate; 920 921 if (WARN_ON(!beacon)) 922 return -EINVAL; 923 924 beacon_skb_len = beacon->len; 925 926 /* TODO: for now the beacon template id is set to be the mac context id. 927 * Might be better to handle it as another resource ... */ 928 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 929 930 /* Set up TX command fields */ 931 beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len); 932 beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id; 933 beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 934 beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 935 TX_CMD_FLG_BT_DIS | 936 TX_CMD_FLG_TSF); 937 938 mvm->mgmt_last_antenna_idx = 939 iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw), 940 mvm->mgmt_last_antenna_idx); 941 942 beacon_cmd.tx.rate_n_flags = 943 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 944 RATE_MCS_ANT_POS); 945 946 info = IEEE80211_SKB_CB(beacon); 947 948 if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) { 949 rate = IWL_FIRST_OFDM_RATE; 950 } else { 951 rate = IWL_FIRST_CCK_RATE; 952 beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); 953 } 954 beacon_cmd.tx.rate_n_flags |= 955 cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); 956 957 /* Set up TX beacon command fields */ 958 if (vif->type == NL80211_IFTYPE_AP) 959 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd, 960 beacon->data, 961 beacon_skb_len); 962 963 /* Submit command */ 964 cmd.len[0] = sizeof(beacon_cmd); 965 cmd.data[0] = &beacon_cmd; 966 cmd.dataflags[0] = 0; 967 cmd.len[1] = beacon_skb_len; 968 cmd.data[1] = beacon->data; 969 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 970 971 return iwl_mvm_send_cmd(mvm, &cmd); 972} 973 974/* The beacon template for the AP/GO/IBSS has changed and needs update */ 975int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 976 struct ieee80211_vif *vif) 977{ 978 struct sk_buff *beacon; 979 int ret; 980 981 WARN_ON(vif->type != NL80211_IFTYPE_AP && 982 vif->type != NL80211_IFTYPE_ADHOC); 983 984 beacon = ieee80211_beacon_get(mvm->hw, vif); 985 if (!beacon) 986 return -ENOMEM; 987 988 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); 989 dev_kfree_skb(beacon); 990 return ret; 991} 992 993struct iwl_mvm_mac_ap_iterator_data { 994 struct iwl_mvm *mvm; 995 struct ieee80211_vif *vif; 996 u32 beacon_device_ts; 997 u16 beacon_int; 998}; 999 1000/* Find the beacon_device_ts and beacon_int for a managed interface */ 1001static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1002 struct ieee80211_vif *vif) 1003{ 1004 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1005 1006 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) 1007 return; 1008 1009 /* Station client has higher priority over P2P client*/ 1010 if (vif->p2p && data->beacon_device_ts) 1011 return; 1012 1013 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1014 data->beacon_int = vif->bss_conf.beacon_int; 1015} 1016 1017/* 1018 * Fill the specific data for mac context of type AP of P2P GO 1019 */ 1020static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1021 struct ieee80211_vif *vif, 1022 struct iwl_mac_data_ap *ctxt_ap, 1023 bool add) 1024{ 1025 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1026 struct iwl_mvm_mac_ap_iterator_data data = { 1027 .mvm = mvm, 1028 .vif = vif, 1029 .beacon_device_ts = 0 1030 }; 1031 1032 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1033 ctxt_ap->bi_reciprocal = 1034 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); 1035 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1036 vif->bss_conf.dtim_period); 1037 ctxt_ap->dtim_reciprocal = 1038 cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * 1039 vif->bss_conf.dtim_period)); 1040 1041 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue); 1042 1043 /* 1044 * Only set the beacon time when the MAC is being added, when we 1045 * just modify the MAC then we should keep the time -- the firmware 1046 * can otherwise have a "jumping" TBTT. 1047 */ 1048 if (add) { 1049 /* 1050 * If there is a station/P2P client interface which is 1051 * associated, set the AP's TBTT far enough from the station's 1052 * TBTT. Otherwise, set it to the current system time 1053 */ 1054 ieee80211_iterate_active_interfaces_atomic( 1055 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1056 iwl_mvm_mac_ap_iterator, &data); 1057 1058 if (data.beacon_device_ts) { 1059 u32 rand = (prandom_u32() % (64 - 36)) + 36; 1060 mvmvif->ap_beacon_time = data.beacon_device_ts + 1061 ieee80211_tu_to_usec(data.beacon_int * rand / 1062 100); 1063 } else { 1064 mvmvif->ap_beacon_time = 1065 iwl_read_prph(mvm->trans, 1066 DEVICE_SYSTEM_TIME_REG); 1067 } 1068 } 1069 1070 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1071 ctxt_ap->beacon_tsf = 0; /* unused */ 1072 1073 /* TODO: Assume that the beacon id == mac context id */ 1074 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1075} 1076 1077static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1078 struct ieee80211_vif *vif, 1079 u32 action) 1080{ 1081 struct iwl_mac_ctx_cmd cmd = {}; 1082 1083 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1084 1085 /* Fill the common data for all mac context types */ 1086 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); 1087 1088 /* Also enable probe requests to pass */ 1089 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 1090 1091 /* Fill the data specific for ap mode */ 1092 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap, 1093 action == FW_CTXT_ACTION_ADD); 1094 1095 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1096} 1097 1098static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1099 struct ieee80211_vif *vif, 1100 u32 action) 1101{ 1102 struct iwl_mac_ctx_cmd cmd = {}; 1103 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1104 1105 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1106 1107 /* Fill the common data for all mac context types */ 1108 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); 1109 1110 /* Fill the data specific for GO mode */ 1111 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap, 1112 action == FW_CTXT_ACTION_ADD); 1113 1114 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1115 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1116 cmd.go.opp_ps_enabled = 1117 cpu_to_le32(!!(noa->oppps_ctwindow & 1118 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1119 1120 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1121} 1122 1123static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1124 u32 action) 1125{ 1126 switch (vif->type) { 1127 case NL80211_IFTYPE_STATION: 1128 if (!vif->p2p) 1129 return iwl_mvm_mac_ctxt_cmd_station(mvm, vif, 1130 action); 1131 else 1132 return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif, 1133 action); 1134 break; 1135 case NL80211_IFTYPE_AP: 1136 if (!vif->p2p) 1137 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1138 else 1139 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1140 break; 1141 case NL80211_IFTYPE_MONITOR: 1142 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1143 case NL80211_IFTYPE_P2P_DEVICE: 1144 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1145 case NL80211_IFTYPE_ADHOC: 1146 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1147 default: 1148 break; 1149 } 1150 1151 return -EOPNOTSUPP; 1152} 1153 1154int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1155{ 1156 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1157 int ret; 1158 1159 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1160 vif->addr, ieee80211_vif_type_p2p(vif))) 1161 return -EIO; 1162 1163 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD); 1164 if (ret) 1165 return ret; 1166 1167 /* will only do anything at resume from D3 time */ 1168 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1169 1170 mvmvif->uploaded = true; 1171 return 0; 1172} 1173 1174int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1175{ 1176 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1177 1178 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1179 vif->addr, ieee80211_vif_type_p2p(vif))) 1180 return -EIO; 1181 1182 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY); 1183} 1184 1185int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1186{ 1187 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1188 struct iwl_mac_ctx_cmd cmd; 1189 int ret; 1190 1191 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1192 vif->addr, ieee80211_vif_type_p2p(vif))) 1193 return -EIO; 1194 1195 memset(&cmd, 0, sizeof(cmd)); 1196 1197 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1198 mvmvif->color)); 1199 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1200 1201 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC, 1202 sizeof(cmd), &cmd); 1203 if (ret) { 1204 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); 1205 return ret; 1206 } 1207 1208 mvmvif->uploaded = false; 1209 1210 if (vif->type == NL80211_IFTYPE_MONITOR) 1211 mvm->hw->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS; 1212 1213 return 0; 1214} 1215 1216int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, 1217 struct iwl_rx_cmd_buffer *rxb, 1218 struct iwl_device_cmd *cmd) 1219{ 1220 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1221 struct iwl_beacon_notif *beacon = (void *)pkt->data; 1222 u16 status __maybe_unused = 1223 le16_to_cpu(beacon->beacon_notify_hdr.status.status); 1224 u32 rate __maybe_unused = 1225 le32_to_cpu(beacon->beacon_notify_hdr.initial_rate); 1226 1227 IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%16llX rate:%d\n", 1228 status & TX_STATUS_MSK, 1229 beacon->beacon_notify_hdr.failure_frame, 1230 le64_to_cpu(beacon->tsf), 1231 rate); 1232 return 0; 1233} 1234 1235static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac, 1236 struct ieee80211_vif *vif) 1237{ 1238 struct iwl_missed_beacons_notif *missed_beacons = _data; 1239 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1240 1241 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id)) 1242 return; 1243 1244 /* 1245 * TODO: the threshold should be adjusted based on latency conditions, 1246 * and/or in case of a CS flow on one of the other AP vifs. 1247 */ 1248 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) > 1249 IWL_MVM_MISSED_BEACONS_THRESHOLD) 1250 ieee80211_beacon_loss(vif); 1251} 1252 1253int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1254 struct iwl_rx_cmd_buffer *rxb, 1255 struct iwl_device_cmd *cmd) 1256{ 1257 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1258 struct iwl_missed_beacons_notif *mb = (void *)pkt->data; 1259 1260 IWL_DEBUG_INFO(mvm, 1261 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", 1262 le32_to_cpu(mb->mac_id), 1263 le32_to_cpu(mb->consec_missed_beacons), 1264 le32_to_cpu(mb->consec_missed_beacons_since_last_rx), 1265 le32_to_cpu(mb->num_recvd_beacons), 1266 le32_to_cpu(mb->num_expected_beacons)); 1267 1268 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1269 IEEE80211_IFACE_ITER_NORMAL, 1270 iwl_mvm_beacon_loss_iterator, 1271 mb); 1272 return 0; 1273} 1274