drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c

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