drivers/net/wireless/st/cw1200/sta.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Mac80211 STA API for ST-Ericsson CW1200 drivers
   4  *
   5  * Copyright (c) 2010, ST-Ericsson
   6  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   7  */
   8
   9 #include <linux/vmalloc.h>
  10 #include <linux/sched.h>
  11 #include <linux/firmware.h>
  12 #include <linux/module.h>
  13 #include <linux/etherdevice.h>
  14
  15 #include "cw1200.h"
  16 #include "sta.h"
  17 #include "fwio.h"
  18 #include "bh.h"
  19 #include "debug.h"
  20
  21 #ifndef ERP_INFO_BYTE_OFFSET
  22 #define ERP_INFO_BYTE_OFFSET 2
  23 #endif
  24
  25 static void cw1200_do_join(struct cw1200_common *priv);
  26 static void cw1200_do_unjoin(struct cw1200_common *priv);
  27
  28 static int cw1200_upload_beacon(struct cw1200_common *priv);
  29 static int cw1200_upload_pspoll(struct cw1200_common *priv);
  30 static int cw1200_upload_null(struct cw1200_common *priv);
  31 static int cw1200_upload_qosnull(struct cw1200_common *priv);
  32 static int cw1200_start_ap(struct cw1200_common *priv);
  33 static int cw1200_update_beaconing(struct cw1200_common *priv);
  34 static int cw1200_enable_beaconing(struct cw1200_common *priv,
  35                                    bool enable);
  36 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
  37                                 struct ieee80211_vif *vif,
  38                                 enum sta_notify_cmd notify_cmd,
  39                                 int link_id);
  40 static int __cw1200_flush(struct cw1200_common *priv, bool drop);
  41
  42 static inline void __cw1200_free_event_queue(struct list_head *list)
  43 {
  44         struct cw1200_wsm_event *event, *tmp;
  45         list_for_each_entry_safe(event, tmp, list, link) {
  46                 list_del(&event->link);
  47                 kfree(event);
  48         }
  49 }
  50
  51 /* ******************************************************************** */
  52 /* STA API                                                              */
  53
  54 int cw1200_start(struct ieee80211_hw *dev)
  55 {
  56         struct cw1200_common *priv = dev->priv;
  57         int ret = 0;
  58
  59         cw1200_pm_stay_awake(&priv->pm_state, HZ);
  60
  61         mutex_lock(&priv->conf_mutex);
  62
  63         /* default EDCA */
  64         WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false);
  65         WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false);
  66         WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false);
  67         WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false);
  68         ret = wsm_set_edca_params(priv, &priv->edca);
  69         if (ret)
  70                 goto out;
  71
  72         ret = cw1200_set_uapsd_param(priv, &priv->edca);
  73         if (ret)
  74                 goto out;
  75
  76         priv->setbssparams_done = false;
  77
  78         memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN);
  79         priv->mode = NL80211_IFTYPE_MONITOR;
  80         priv->wep_default_key_id = -1;
  81
  82         priv->cqm_beacon_loss_count = 10;
  83
  84         ret = cw1200_setup_mac(priv);
  85         if (ret)
  86                 goto out;
  87
  88 out:
  89         mutex_unlock(&priv->conf_mutex);
  90         return ret;
  91 }
  92
  93 void cw1200_stop(struct ieee80211_hw *dev)
  94 {
  95         struct cw1200_common *priv = dev->priv;
  96         LIST_HEAD(list);
  97         int i;
  98
  99         wsm_lock_tx(priv);
 100
 101         while (down_trylock(&priv->scan.lock)) {
 102                 /* Scan is in progress. Force it to stop. */
 103                 priv->scan.req = NULL;
 104                 schedule();
 105         }
 106         up(&priv->scan.lock);
 107
 108         cancel_delayed_work_sync(&priv->scan.probe_work);
 109         cancel_delayed_work_sync(&priv->scan.timeout);
 110         cancel_delayed_work_sync(&priv->clear_recent_scan_work);
 111         cancel_delayed_work_sync(&priv->join_timeout);
 112         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
 113         cancel_work_sync(&priv->unjoin_work);
 114         cancel_delayed_work_sync(&priv->link_id_gc_work);
 115         flush_workqueue(priv->workqueue);
 116         del_timer_sync(&priv->mcast_timeout);
 117         mutex_lock(&priv->conf_mutex);
 118         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
 119         priv->listening = false;
 120
 121         spin_lock(&priv->event_queue_lock);
 122         list_splice_init(&priv->event_queue, &list);
 123         spin_unlock(&priv->event_queue_lock);
 124         __cw1200_free_event_queue(&list);
 125
 126
 127         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 128         priv->join_pending = false;
 129
 130         for (i = 0; i < 4; i++)
 131                 cw1200_queue_clear(&priv->tx_queue[i]);
 132         mutex_unlock(&priv->conf_mutex);
 133         tx_policy_clean(priv);
 134
 135         /* HACK! */
 136         if (atomic_xchg(&priv->tx_lock, 1) != 1)
 137                 pr_debug("[STA] TX is force-unlocked due to stop request.\n");
 138
 139         wsm_unlock_tx(priv);
 140         atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */
 141 }
 142
 143 static int cw1200_bssloss_mitigation = 1;
 144 module_param(cw1200_bssloss_mitigation, int, 0644);
 145 MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)");
 146
 147
 148 void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
 149                              int init, int good, int bad)
 150 {
 151         int tx = 0;
 152
 153         priv->delayed_link_loss = 0;
 154         cancel_work_sync(&priv->bss_params_work);
 155
 156         pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n",
 157                  priv->bss_loss_state,
 158                  init, good, bad,
 159                  atomic_read(&priv->tx_lock),
 160                  priv->delayed_unjoin);
 161
 162         /* If we have a pending unjoin */
 163         if (priv->delayed_unjoin)
 164                 return;
 165
 166         if (init) {
 167                 queue_delayed_work(priv->workqueue,
 168                                    &priv->bss_loss_work,
 169                                    HZ);
 170                 priv->bss_loss_state = 0;
 171
 172                 /* Skip the confimration procedure in P2P case */
 173                 if (!priv->vif->p2p && !atomic_read(&priv->tx_lock))
 174                         tx = 1;
 175         } else if (good) {
 176                 cancel_delayed_work_sync(&priv->bss_loss_work);
 177                 priv->bss_loss_state = 0;
 178                 queue_work(priv->workqueue, &priv->bss_params_work);
 179         } else if (bad) {
 180                 /* XXX Should we just keep going until we time out? */
 181                 if (priv->bss_loss_state < 3)
 182                         tx = 1;
 183         } else {
 184                 cancel_delayed_work_sync(&priv->bss_loss_work);
 185                 priv->bss_loss_state = 0;
 186         }
 187
 188         /* Bypass mitigation if it's disabled */
 189         if (!cw1200_bssloss_mitigation)
 190                 tx = 0;
 191
 192         /* Spit out a NULL packet to our AP if necessary */
 193         if (tx) {
 194                 struct sk_buff *skb;
 195
 196                 priv->bss_loss_state++;
 197
 198                 skb = ieee80211_nullfunc_get(priv->hw, priv->vif, -1, false);
 199                 WARN_ON(!skb);
 200                 if (skb)
 201                         cw1200_tx(priv->hw, NULL, skb);
 202         }
 203 }
 204
 205 int cw1200_add_interface(struct ieee80211_hw *dev,
 206                          struct ieee80211_vif *vif)
 207 {
 208         int ret;
 209         struct cw1200_common *priv = dev->priv;
 210         /* __le32 auto_calibration_mode = __cpu_to_le32(1); */
 211
 212         vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 213                              IEEE80211_VIF_SUPPORTS_UAPSD |
 214                              IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 215
 216         mutex_lock(&priv->conf_mutex);
 217
 218         if (priv->mode != NL80211_IFTYPE_MONITOR) {
 219                 mutex_unlock(&priv->conf_mutex);
 220                 return -EOPNOTSUPP;
 221         }
 222
 223         switch (vif->type) {
 224         case NL80211_IFTYPE_STATION:
 225         case NL80211_IFTYPE_ADHOC:
 226         case NL80211_IFTYPE_MESH_POINT:
 227         case NL80211_IFTYPE_AP:
 228                 priv->mode = vif->type;
 229                 break;
 230         default:
 231                 mutex_unlock(&priv->conf_mutex);
 232                 return -EOPNOTSUPP;
 233         }
 234
 235         priv->vif = vif;
 236         memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
 237         ret = cw1200_setup_mac(priv);
 238         /* Enable auto-calibration */
 239         /* Exception in subsequent channel switch; disabled.
 240          *  wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE,
 241          *      &auto_calibration_mode, sizeof(auto_calibration_mode));
 242         */
 243
 244         mutex_unlock(&priv->conf_mutex);
 245         return ret;
 246 }
 247
 248 void cw1200_remove_interface(struct ieee80211_hw *dev,
 249                              struct ieee80211_vif *vif)
 250 {
 251         struct cw1200_common *priv = dev->priv;
 252         struct wsm_reset reset = {
 253                 .reset_statistics = true,
 254         };
 255         int i;
 256
 257         mutex_lock(&priv->conf_mutex);
 258         switch (priv->join_status) {
 259         case CW1200_JOIN_STATUS_JOINING:
 260         case CW1200_JOIN_STATUS_PRE_STA:
 261         case CW1200_JOIN_STATUS_STA:
 262         case CW1200_JOIN_STATUS_IBSS:
 263                 wsm_lock_tx(priv);
 264                 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
 265                         wsm_unlock_tx(priv);
 266                 break;
 267         case CW1200_JOIN_STATUS_AP:
 268                 for (i = 0; priv->link_id_map; ++i) {
 269                         if (priv->link_id_map & BIT(i)) {
 270                                 reset.link_id = i;
 271                                 wsm_reset(priv, &reset);
 272                                 priv->link_id_map &= ~BIT(i);
 273                         }
 274                 }
 275                 memset(priv->link_id_db, 0, sizeof(priv->link_id_db));
 276                 priv->sta_asleep_mask = 0;
 277                 priv->enable_beacon = false;
 278                 priv->tx_multicast = false;
 279                 priv->aid0_bit_set = false;
 280                 priv->buffered_multicasts = false;
 281                 priv->pspoll_mask = 0;
 282                 reset.link_id = 0;
 283                 wsm_reset(priv, &reset);
 284                 break;
 285         case CW1200_JOIN_STATUS_MONITOR:
 286                 cw1200_update_listening(priv, false);
 287                 break;
 288         default:
 289                 break;
 290         }
 291         priv->vif = NULL;
 292         priv->mode = NL80211_IFTYPE_MONITOR;
 293         eth_zero_addr(priv->mac_addr);
 294         memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo));
 295         cw1200_free_keys(priv);
 296         cw1200_setup_mac(priv);
 297         priv->listening = false;
 298         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 299         if (!__cw1200_flush(priv, true))
 300                 wsm_unlock_tx(priv);
 301
 302         mutex_unlock(&priv->conf_mutex);
 303 }
 304
 305 int cw1200_change_interface(struct ieee80211_hw *dev,
 306                             struct ieee80211_vif *vif,
 307                             enum nl80211_iftype new_type,
 308                             bool p2p)
 309 {
 310         int ret = 0;
 311         pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type,
 312                  p2p, vif->type, vif->p2p);
 313
 314         if (new_type != vif->type || vif->p2p != p2p) {
 315                 cw1200_remove_interface(dev, vif);
 316                 vif->type = new_type;
 317                 vif->p2p = p2p;
 318                 ret = cw1200_add_interface(dev, vif);
 319         }
 320
 321         return ret;
 322 }
 323
 324 int cw1200_config(struct ieee80211_hw *dev, u32 changed)
 325 {
 326         int ret = 0;
 327         struct cw1200_common *priv = dev->priv;
 328         struct ieee80211_conf *conf = &dev->conf;
 329
 330         pr_debug("CONFIG CHANGED:  %08x\n", changed);
 331
 332         down(&priv->scan.lock);
 333         mutex_lock(&priv->conf_mutex);
 334         /* TODO: IEEE80211_CONF_CHANGE_QOS */
 335         /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */
 336
 337         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 338                 priv->output_power = conf->power_level;
 339                 pr_debug("[STA] TX power: %d\n", priv->output_power);
 340                 wsm_set_output_power(priv, priv->output_power * 10);
 341         }
 342
 343         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) &&
 344             (priv->channel != conf->chandef.chan)) {
 345                 struct ieee80211_channel *ch = conf->chandef.chan;
 346                 struct wsm_switch_channel channel = {
 347                         .channel_number = ch->hw_value,
 348                 };
 349                 pr_debug("[STA] Freq %d (wsm ch: %d).\n",
 350                          ch->center_freq, ch->hw_value);
 351
 352                 /* __cw1200_flush() implicitly locks tx, if successful */
 353                 if (!__cw1200_flush(priv, false)) {
 354                         if (!wsm_switch_channel(priv, &channel)) {
 355                                 ret = wait_event_timeout(priv->channel_switch_done,
 356                                                          !priv->channel_switch_in_progress,
 357                                                          3 * HZ);
 358                                 if (ret) {
 359                                         /* Already unlocks if successful */
 360                                         priv->channel = ch;
 361                                         ret = 0;
 362                                 } else {
 363                                         ret = -ETIMEDOUT;
 364                                 }
 365                         } else {
 366                                 /* Unlock if switch channel fails */
 367                                 wsm_unlock_tx(priv);
 368                         }
 369                 }
 370         }
 371
 372         if (changed & IEEE80211_CONF_CHANGE_PS) {
 373                 if (!(conf->flags & IEEE80211_CONF_PS))
 374                         priv->powersave_mode.mode = WSM_PSM_ACTIVE;
 375                 else if (conf->dynamic_ps_timeout <= 0)
 376                         priv->powersave_mode.mode = WSM_PSM_PS;
 377                 else
 378                         priv->powersave_mode.mode = WSM_PSM_FAST_PS;
 379
 380                 /* Firmware requires that value for this 1-byte field must
 381                  * be specified in units of 500us. Values above the 128ms
 382                  * threshold are not supported.
 383                  */
 384                 if (conf->dynamic_ps_timeout >= 0x80)
 385                         priv->powersave_mode.fast_psm_idle_period = 0xFF;
 386                 else
 387                         priv->powersave_mode.fast_psm_idle_period =
 388                                         conf->dynamic_ps_timeout << 1;
 389
 390                 if (priv->join_status == CW1200_JOIN_STATUS_STA &&
 391                     priv->bss_params.aid)
 392                         cw1200_set_pm(priv, &priv->powersave_mode);
 393         }
 394
 395         if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
 396                 /* TBD: It looks like it's transparent
 397                  * there's a monitor interface present -- use this
 398                  * to determine for example whether to calculate
 399                  * timestamps for packets or not, do not use instead
 400                  * of filter flags!
 401                  */
 402         }
 403
 404         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 405                 struct wsm_operational_mode mode = {
 406                         .power_mode = cw1200_power_mode,
 407                         .disable_more_flag_usage = true,
 408                 };
 409
 410                 wsm_lock_tx(priv);
 411                 /* Disable p2p-dev mode forced by TX request */
 412                 if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) &&
 413                     (conf->flags & IEEE80211_CONF_IDLE) &&
 414                     !priv->listening) {
 415                         cw1200_disable_listening(priv);
 416                         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 417                 }
 418                 wsm_set_operational_mode(priv, &mode);
 419                 wsm_unlock_tx(priv);
 420         }
 421
 422         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 423                 pr_debug("[STA] Retry limits: %d (long), %d (short).\n",
 424                          conf->long_frame_max_tx_count,
 425                          conf->short_frame_max_tx_count);
 426                 spin_lock_bh(&priv->tx_policy_cache.lock);
 427                 priv->long_frame_max_tx_count = conf->long_frame_max_tx_count;
 428                 priv->short_frame_max_tx_count =
 429                         (conf->short_frame_max_tx_count < 0x0F) ?
 430                         conf->short_frame_max_tx_count : 0x0F;
 431                 priv->hw->max_rate_tries = priv->short_frame_max_tx_count;
 432                 spin_unlock_bh(&priv->tx_policy_cache.lock);
 433         }
 434         mutex_unlock(&priv->conf_mutex);
 435         up(&priv->scan.lock);
 436         return ret;
 437 }
 438
 439 void cw1200_update_filtering(struct cw1200_common *priv)
 440 {
 441         int ret;
 442         bool bssid_filtering = !priv->rx_filter.bssid;
 443         bool is_p2p = priv->vif && priv->vif->p2p;
 444         bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type;
 445
 446         static struct wsm_beacon_filter_control bf_ctrl;
 447         static struct wsm_mib_beacon_filter_table bf_tbl = {
 448                 .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC,
 449                 .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 450                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 451                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 452                 .entry[0].oui[0] = 0x50,
 453                 .entry[0].oui[1] = 0x6F,
 454                 .entry[0].oui[2] = 0x9A,
 455                 .entry[1].ie_id = WLAN_EID_HT_OPERATION,
 456                 .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 457                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 458                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 459                 .entry[2].ie_id = WLAN_EID_ERP_INFO,
 460                 .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 461                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 462                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 463         };
 464
 465         if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE)
 466                 return;
 467         else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
 468                 bssid_filtering = false;
 469
 470         if (priv->disable_beacon_filter) {
 471                 bf_ctrl.enabled = 0;
 472                 bf_ctrl.bcn_count = 1;
 473                 bf_tbl.num = __cpu_to_le32(0);
 474         } else if (is_p2p || !is_sta) {
 475                 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE |
 476                         WSM_BEACON_FILTER_AUTO_ERP;
 477                 bf_ctrl.bcn_count = 0;
 478                 bf_tbl.num = __cpu_to_le32(2);
 479         } else {
 480                 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE;
 481                 bf_ctrl.bcn_count = 0;
 482                 bf_tbl.num = __cpu_to_le32(3);
 483         }
 484
 485         /* When acting as p2p client being connected to p2p GO, in order to
 486          * receive frames from a different p2p device, turn off bssid filter.
 487          *
 488          * WARNING: FW dependency!
 489          * This can only be used with FW WSM371 and its successors.
 490          * In that FW version even with bssid filter turned off,
 491          * device will block most of the unwanted frames.
 492          */
 493         if (is_p2p)
 494                 bssid_filtering = false;
 495
 496         ret = wsm_set_rx_filter(priv, &priv->rx_filter);
 497         if (!ret)
 498                 ret = wsm_set_beacon_filter_table(priv, &bf_tbl);
 499         if (!ret)
 500                 ret = wsm_beacon_filter_control(priv, &bf_ctrl);
 501         if (!ret)
 502                 ret = wsm_set_bssid_filtering(priv, bssid_filtering);
 503         if (!ret)
 504                 ret = wsm_set_multicast_filter(priv, &priv->multicast_filter);
 505         if (ret)
 506                 wiphy_err(priv->hw->wiphy,
 507                           "Update filtering failed: %d.\n", ret);
 508         return;
 509 }
 510
 511 void cw1200_update_filtering_work(struct work_struct *work)
 512 {
 513         struct cw1200_common *priv =
 514                 container_of(work, struct cw1200_common,
 515                              update_filtering_work);
 516
 517         cw1200_update_filtering(priv);
 518 }
 519
 520 void cw1200_set_beacon_wakeup_period_work(struct work_struct *work)
 521 {
 522         struct cw1200_common *priv =
 523                 container_of(work, struct cw1200_common,
 524                              set_beacon_wakeup_period_work);
 525
 526         wsm_set_beacon_wakeup_period(priv,
 527                                      priv->beacon_int * priv->join_dtim_period >
 528                                      MAX_BEACON_SKIP_TIME_MS ? 1 :
 529                                      priv->join_dtim_period, 0);
 530 }
 531
 532 u64 cw1200_prepare_multicast(struct ieee80211_hw *hw,
 533                              struct netdev_hw_addr_list *mc_list)
 534 {
 535         static u8 broadcast_ipv6[ETH_ALEN] = {
 536                 0x33, 0x33, 0x00, 0x00, 0x00, 0x01
 537         };
 538         static u8 broadcast_ipv4[ETH_ALEN] = {
 539                 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01
 540         };
 541         struct cw1200_common *priv = hw->priv;
 542         struct netdev_hw_addr *ha;
 543         int count = 0;
 544
 545         /* Disable multicast filtering */
 546         priv->has_multicast_subscription = false;
 547         memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter));
 548
 549         if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES)
 550                 return 0;
 551
 552         /* Enable if requested */
 553         netdev_hw_addr_list_for_each(ha, mc_list) {
 554                 pr_debug("[STA] multicast: %pM\n", ha->addr);
 555                 memcpy(&priv->multicast_filter.macaddrs[count],
 556                        ha->addr, ETH_ALEN);
 557                 if (!ether_addr_equal(ha->addr, broadcast_ipv4) &&
 558                     !ether_addr_equal(ha->addr, broadcast_ipv6))
 559                         priv->has_multicast_subscription = true;
 560                 count++;
 561         }
 562
 563         if (count) {
 564                 priv->multicast_filter.enable = __cpu_to_le32(1);
 565                 priv->multicast_filter.num_addrs = __cpu_to_le32(count);
 566         }
 567
 568         return netdev_hw_addr_list_count(mc_list);
 569 }
 570
 571 void cw1200_configure_filter(struct ieee80211_hw *dev,
 572                              unsigned int changed_flags,
 573                              unsigned int *total_flags,
 574                              u64 multicast)
 575 {
 576         struct cw1200_common *priv = dev->priv;
 577         bool listening = !!(*total_flags &
 578                             (FIF_OTHER_BSS |
 579                              FIF_BCN_PRBRESP_PROMISC |
 580                              FIF_PROBE_REQ));
 581
 582         *total_flags &= FIF_OTHER_BSS |
 583                         FIF_FCSFAIL |
 584                         FIF_BCN_PRBRESP_PROMISC |
 585                         FIF_PROBE_REQ;
 586
 587         down(&priv->scan.lock);
 588         mutex_lock(&priv->conf_mutex);
 589
 590         priv->rx_filter.promiscuous = 0;
 591         priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS |
 592                         FIF_PROBE_REQ)) ? 1 : 0;
 593         priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0;
 594         priv->disable_beacon_filter = !(*total_flags &
 595                                         (FIF_BCN_PRBRESP_PROMISC |
 596                                          FIF_PROBE_REQ));
 597         if (priv->listening != listening) {
 598                 priv->listening = listening;
 599                 wsm_lock_tx(priv);
 600                 cw1200_update_listening(priv, listening);
 601                 wsm_unlock_tx(priv);
 602         }
 603         cw1200_update_filtering(priv);
 604         mutex_unlock(&priv->conf_mutex);
 605         up(&priv->scan.lock);
 606 }
 607
 608 int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
 609                    unsigned int link_id, u16 queue,
 610                    const struct ieee80211_tx_queue_params *params)
 611 {
 612         struct cw1200_common *priv = dev->priv;
 613         int ret = 0;
 614         /* To prevent re-applying PM request OID again and again*/
 615         bool old_uapsd_flags;
 616
 617         mutex_lock(&priv->conf_mutex);
 618
 619         if (queue < dev->queues) {
 620                 old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags);
 621
 622                 WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0);
 623                 ret = wsm_set_tx_queue_params(priv,
 624                                               &priv->tx_queue_params.params[queue], queue);
 625                 if (ret) {
 626                         ret = -EINVAL;
 627                         goto out;
 628                 }
 629
 630                 WSM_EDCA_SET(&priv->edca, queue, params->aifs,
 631                              params->cw_min, params->cw_max,
 632                              params->txop, 0xc8,
 633                              params->uapsd);
 634                 ret = wsm_set_edca_params(priv, &priv->edca);
 635                 if (ret) {
 636                         ret = -EINVAL;
 637                         goto out;
 638                 }
 639
 640                 if (priv->mode == NL80211_IFTYPE_STATION) {
 641                         ret = cw1200_set_uapsd_param(priv, &priv->edca);
 642                         if (!ret && priv->setbssparams_done &&
 643                             (priv->join_status == CW1200_JOIN_STATUS_STA) &&
 644                             (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags)))
 645                                 ret = cw1200_set_pm(priv, &priv->powersave_mode);
 646                 }
 647         } else {
 648                 ret = -EINVAL;
 649         }
 650
 651 out:
 652         mutex_unlock(&priv->conf_mutex);
 653         return ret;
 654 }
 655
 656 int cw1200_get_stats(struct ieee80211_hw *dev,
 657                      struct ieee80211_low_level_stats *stats)
 658 {
 659         struct cw1200_common *priv = dev->priv;
 660
 661         memcpy(stats, &priv->stats, sizeof(*stats));
 662         return 0;
 663 }
 664
 665 int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
 666 {
 667         struct wsm_set_pm pm = *arg;
 668
 669         if (priv->uapsd_info.uapsd_flags != 0)
 670                 pm.mode &= ~WSM_PSM_FAST_PS_FLAG;
 671
 672         if (memcmp(&pm, &priv->firmware_ps_mode,
 673                    sizeof(struct wsm_set_pm))) {
 674                 priv->firmware_ps_mode = pm;
 675                 return wsm_set_pm(priv, &pm);
 676         } else {
 677                 return 0;
 678         }
 679 }
 680
 681 int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
 682                    struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 683                    struct ieee80211_key_conf *key)
 684 {
 685         int ret = -EOPNOTSUPP;
 686         struct cw1200_common *priv = dev->priv;
 687         struct ieee80211_key_seq seq;
 688
 689         mutex_lock(&priv->conf_mutex);
 690
 691         if (cmd == SET_KEY) {
 692                 u8 *peer_addr = NULL;
 693                 int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ?
 694                         1 : 0;
 695                 int idx = cw1200_alloc_key(priv);
 696                 struct wsm_add_key *wsm_key = &priv->keys[idx];
 697
 698                 if (idx < 0) {
 699                         ret = -EINVAL;
 700                         goto finally;
 701                 }
 702
 703                 if (sta)
 704                         peer_addr = sta->addr;
 705
 706                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE |
 707                               IEEE80211_KEY_FLAG_RESERVE_TAILROOM;
 708
 709                 switch (key->cipher) {
 710                 case WLAN_CIPHER_SUITE_WEP40:
 711                 case WLAN_CIPHER_SUITE_WEP104:
 712                         if (key->keylen > 16) {
 713                                 cw1200_free_key(priv, idx);
 714                                 ret = -EINVAL;
 715                                 goto finally;
 716                         }
 717
 718                         if (pairwise) {
 719                                 wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE;
 720                                 memcpy(wsm_key->wep_pairwise.peer,
 721                                        peer_addr, ETH_ALEN);
 722                                 memcpy(wsm_key->wep_pairwise.keydata,
 723                                        &key->key[0], key->keylen);
 724                                 wsm_key->wep_pairwise.keylen = key->keylen;
 725                         } else {
 726                                 wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT;
 727                                 memcpy(wsm_key->wep_group.keydata,
 728                                        &key->key[0], key->keylen);
 729                                 wsm_key->wep_group.keylen = key->keylen;
 730                                 wsm_key->wep_group.keyid = key->keyidx;
 731                         }
 732                         break;
 733                 case WLAN_CIPHER_SUITE_TKIP:
 734                         ieee80211_get_key_rx_seq(key, 0, &seq);
 735                         if (pairwise) {
 736                                 wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE;
 737                                 memcpy(wsm_key->tkip_pairwise.peer,
 738                                        peer_addr, ETH_ALEN);
 739                                 memcpy(wsm_key->tkip_pairwise.keydata,
 740                                        &key->key[0], 16);
 741                                 memcpy(wsm_key->tkip_pairwise.tx_mic_key,
 742                                        &key->key[16], 8);
 743                                 memcpy(wsm_key->tkip_pairwise.rx_mic_key,
 744                                        &key->key[24], 8);
 745                         } else {
 746                                 size_t mic_offset =
 747                                         (priv->mode == NL80211_IFTYPE_AP) ?
 748                                         16 : 24;
 749                                 wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP;
 750                                 memcpy(wsm_key->tkip_group.keydata,
 751                                        &key->key[0], 16);
 752                                 memcpy(wsm_key->tkip_group.rx_mic_key,
 753                                        &key->key[mic_offset], 8);
 754
 755                                 wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff;
 756                                 wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff;
 757                                 wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff;
 758                                 wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff;
 759                                 wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff;
 760                                 wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff;
 761                                 wsm_key->tkip_group.rx_seqnum[6] = 0;
 762                                 wsm_key->tkip_group.rx_seqnum[7] = 0;
 763
 764                                 wsm_key->tkip_group.keyid = key->keyidx;
 765                         }
 766                         break;
 767                 case WLAN_CIPHER_SUITE_CCMP:
 768                         ieee80211_get_key_rx_seq(key, 0, &seq);
 769                         if (pairwise) {
 770                                 wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE;
 771                                 memcpy(wsm_key->aes_pairwise.peer,
 772                                        peer_addr, ETH_ALEN);
 773                                 memcpy(wsm_key->aes_pairwise.keydata,
 774                                        &key->key[0], 16);
 775                         } else {
 776                                 wsm_key->type = WSM_KEY_TYPE_AES_GROUP;
 777                                 memcpy(wsm_key->aes_group.keydata,
 778                                        &key->key[0], 16);
 779
 780                                 wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5];
 781                                 wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4];
 782                                 wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3];
 783                                 wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2];
 784                                 wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1];
 785                                 wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0];
 786                                 wsm_key->aes_group.rx_seqnum[6] = 0;
 787                                 wsm_key->aes_group.rx_seqnum[7] = 0;
 788                                 wsm_key->aes_group.keyid = key->keyidx;
 789                         }
 790                         break;
 791                 case WLAN_CIPHER_SUITE_SMS4:
 792                         if (pairwise) {
 793                                 wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE;
 794                                 memcpy(wsm_key->wapi_pairwise.peer,
 795                                        peer_addr, ETH_ALEN);
 796                                 memcpy(wsm_key->wapi_pairwise.keydata,
 797                                        &key->key[0], 16);
 798                                 memcpy(wsm_key->wapi_pairwise.mic_key,
 799                                        &key->key[16], 16);
 800                                 wsm_key->wapi_pairwise.keyid = key->keyidx;
 801                         } else {
 802                                 wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP;
 803                                 memcpy(wsm_key->wapi_group.keydata,
 804                                        &key->key[0],  16);
 805                                 memcpy(wsm_key->wapi_group.mic_key,
 806                                        &key->key[16], 16);
 807                                 wsm_key->wapi_group.keyid = key->keyidx;
 808                         }
 809                         break;
 810                 default:
 811                         pr_warn("Unhandled key type %d\n", key->cipher);
 812                         cw1200_free_key(priv, idx);
 813                         ret = -EOPNOTSUPP;
 814                         goto finally;
 815                 }
 816                 ret = wsm_add_key(priv, wsm_key);
 817                 if (!ret)
 818                         key->hw_key_idx = idx;
 819                 else
 820                         cw1200_free_key(priv, idx);
 821         } else if (cmd == DISABLE_KEY) {
 822                 struct wsm_remove_key wsm_key = {
 823                         .index = key->hw_key_idx,
 824                 };
 825
 826                 if (wsm_key.index > WSM_KEY_MAX_INDEX) {
 827                         ret = -EINVAL;
 828                         goto finally;
 829                 }
 830
 831                 cw1200_free_key(priv, wsm_key.index);
 832                 ret = wsm_remove_key(priv, &wsm_key);
 833         } else {
 834                 pr_warn("Unhandled key command %d\n", cmd);
 835         }
 836
 837 finally:
 838         mutex_unlock(&priv->conf_mutex);
 839         return ret;
 840 }
 841
 842 void cw1200_wep_key_work(struct work_struct *work)
 843 {
 844         struct cw1200_common *priv =
 845                 container_of(work, struct cw1200_common, wep_key_work);
 846         u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id);
 847         struct cw1200_queue *queue = &priv->tx_queue[queue_id];
 848         __le32 wep_default_key_id = __cpu_to_le32(
 849                 priv->wep_default_key_id);
 850
 851         pr_debug("[STA] Setting default WEP key: %d\n",
 852                  priv->wep_default_key_id);
 853         wsm_flush_tx(priv);
 854         wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
 855                       &wep_default_key_id, sizeof(wep_default_key_id));
 856         cw1200_queue_requeue(queue, priv->pending_frame_id);
 857         wsm_unlock_tx(priv);
 858 }
 859
 860 int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 861 {
 862         int ret = 0;
 863         __le32 val32;
 864         struct cw1200_common *priv = hw->priv;
 865
 866         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 867                 return 0;
 868
 869         if (value != (u32) -1)
 870                 val32 = __cpu_to_le32(value);
 871         else
 872                 val32 = 0; /* disabled */
 873
 874         if (priv->rts_threshold == value)
 875                 goto out;
 876
 877         pr_debug("[STA] Setting RTS threshold: %d\n",
 878                  priv->rts_threshold);
 879
 880         /* mutex_lock(&priv->conf_mutex); */
 881         ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD,
 882                             &val32, sizeof(val32));
 883         if (!ret)
 884                 priv->rts_threshold = value;
 885         /* mutex_unlock(&priv->conf_mutex); */
 886
 887 out:
 888         return ret;
 889 }
 890
 891 /* If successful, LOCKS the TX queue! */
 892 static int __cw1200_flush(struct cw1200_common *priv, bool drop)
 893 {
 894         int i, ret;
 895
 896         for (;;) {
 897                 /* TODO: correct flush handling is required when dev_stop.
 898                  * Temporary workaround: 2s
 899                  */
 900                 if (drop) {
 901                         for (i = 0; i < 4; ++i)
 902                                 cw1200_queue_clear(&priv->tx_queue[i]);
 903                 } else {
 904                         ret = wait_event_timeout(
 905                                 priv->tx_queue_stats.wait_link_id_empty,
 906                                 cw1200_queue_stats_is_empty(
 907                                         &priv->tx_queue_stats, -1),
 908                                 2 * HZ);
 909                 }
 910
 911                 if (!drop && ret <= 0) {
 912                         ret = -ETIMEDOUT;
 913                         break;
 914                 } else {
 915                         ret = 0;
 916                 }
 917
 918                 wsm_lock_tx(priv);
 919                 if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) {
 920                         /* Highly unlikely: WSM requeued frames. */
 921                         wsm_unlock_tx(priv);
 922                         continue;
 923                 }
 924                 break;
 925         }
 926         return ret;
 927 }
 928
 929 void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 930                   u32 queues, bool drop)
 931 {
 932         struct cw1200_common *priv = hw->priv;
 933
 934         switch (priv->mode) {
 935         case NL80211_IFTYPE_MONITOR:
 936                 drop = true;
 937                 break;
 938         case NL80211_IFTYPE_AP:
 939                 if (!priv->enable_beacon)
 940                         drop = true;
 941                 break;
 942         }
 943
 944         if (!__cw1200_flush(priv, drop))
 945                 wsm_unlock_tx(priv);
 946
 947         return;
 948 }
 949
 950 /* ******************************************************************** */
 951 /* WSM callbacks                                                        */
 952
 953 void cw1200_free_event_queue(struct cw1200_common *priv)
 954 {
 955         LIST_HEAD(list);
 956
 957         spin_lock(&priv->event_queue_lock);
 958         list_splice_init(&priv->event_queue, &list);
 959         spin_unlock(&priv->event_queue_lock);
 960
 961         __cw1200_free_event_queue(&list);
 962 }
 963
 964 void cw1200_event_handler(struct work_struct *work)
 965 {
 966         struct cw1200_common *priv =
 967                 container_of(work, struct cw1200_common, event_handler);
 968         struct cw1200_wsm_event *event;
 969         LIST_HEAD(list);
 970
 971         spin_lock(&priv->event_queue_lock);
 972         list_splice_init(&priv->event_queue, &list);
 973         spin_unlock(&priv->event_queue_lock);
 974
 975         list_for_each_entry(event, &list, link) {
 976                 switch (event->evt.id) {
 977                 case WSM_EVENT_ERROR:
 978                         pr_err("Unhandled WSM Error from LMAC\n");
 979                         break;
 980                 case WSM_EVENT_BSS_LOST:
 981                         pr_debug("[CQM] BSS lost.\n");
 982                         cancel_work_sync(&priv->unjoin_work);
 983                         if (!down_trylock(&priv->scan.lock)) {
 984                                 cw1200_cqm_bssloss_sm(priv, 1, 0, 0);
 985                                 up(&priv->scan.lock);
 986                         } else {
 987                                 /* Scan is in progress. Delay reporting.
 988                                  * Scan complete will trigger bss_loss_work
 989                                  */
 990                                 priv->delayed_link_loss = 1;
 991                                 /* Also start a watchdog. */
 992                                 queue_delayed_work(priv->workqueue,
 993                                                    &priv->bss_loss_work, 5*HZ);
 994                         }
 995                         break;
 996                 case WSM_EVENT_BSS_REGAINED:
 997                         pr_debug("[CQM] BSS regained.\n");
 998                         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
 999                         cancel_work_sync(&priv->unjoin_work);
1000                         break;
1001                 case WSM_EVENT_RADAR_DETECTED:
1002                         wiphy_info(priv->hw->wiphy, "radar pulse detected\n");
1003                         break;
1004                 case WSM_EVENT_RCPI_RSSI:
1005                 {
1006                         /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
1007                          * RSSI = RCPI / 2 - 110
1008                          */
1009                         int rcpi_rssi = (int)(event->evt.data & 0xFF);
1010                         int cqm_evt;
1011                         if (priv->cqm_use_rssi)
1012                                 rcpi_rssi = (s8)rcpi_rssi;
1013                         else
1014                                 rcpi_rssi =  rcpi_rssi / 2 - 110;
1015
1016                         cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ?
1017                                 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW :
1018                                 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1019                         pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi);
1020                         ieee80211_cqm_rssi_notify(priv->vif, cqm_evt, rcpi_rssi,
1021                                                   GFP_KERNEL);
1022                         break;
1023                 }
1024                 case WSM_EVENT_BT_INACTIVE:
1025                         pr_warn("Unhandled BT INACTIVE from LMAC\n");
1026                         break;
1027                 case WSM_EVENT_BT_ACTIVE:
1028                         pr_warn("Unhandled BT ACTIVE from LMAC\n");
1029                         break;
1030                 }
1031         }
1032         __cw1200_free_event_queue(&list);
1033 }
1034
1035 void cw1200_bss_loss_work(struct work_struct *work)
1036 {
1037         struct cw1200_common *priv =
1038                 container_of(work, struct cw1200_common, bss_loss_work.work);
1039
1040         pr_debug("[CQM] Reporting connection loss.\n");
1041         wsm_lock_tx(priv);
1042         if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1043                 wsm_unlock_tx(priv);
1044 }
1045
1046 void cw1200_bss_params_work(struct work_struct *work)
1047 {
1048         struct cw1200_common *priv =
1049                 container_of(work, struct cw1200_common, bss_params_work);
1050         mutex_lock(&priv->conf_mutex);
1051
1052         priv->bss_params.reset_beacon_loss = 1;
1053         wsm_set_bss_params(priv, &priv->bss_params);
1054         priv->bss_params.reset_beacon_loss = 0;
1055
1056         mutex_unlock(&priv->conf_mutex);
1057 }
1058
1059 /* ******************************************************************** */
1060 /* Internal API                                                         */
1061
1062 /* This function is called to Parse the SDD file
1063  * to extract listen_interval and PTA related information
1064  * sdd is a TLV: u8 id, u8 len, u8 data[]
1065  */
1066 static int cw1200_parse_sdd_file(struct cw1200_common *priv)
1067 {
1068         const u8 *p = priv->sdd->data;
1069         int ret = 0;
1070
1071         while (p + 2 <= priv->sdd->data + priv->sdd->size) {
1072                 if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) {
1073                         pr_warn("Malformed sdd structure\n");
1074                         return -1;
1075                 }
1076                 switch (p[0]) {
1077                 case SDD_PTA_CFG_ELT_ID: {
1078                         u16 v;
1079                         if (p[1] < 4) {
1080                                 pr_warn("SDD_PTA_CFG_ELT_ID malformed\n");
1081                                 ret = -1;
1082                                 break;
1083                         }
1084                         v = le16_to_cpu(*((__le16 *)(p + 2)));
1085                         if (!v)  /* non-zero means this is enabled */
1086                                 break;
1087
1088                         v = le16_to_cpu(*((__le16 *)(p + 4)));
1089                         priv->conf_listen_interval = (v >> 7) & 0x1F;
1090                         pr_debug("PTA found; Listen Interval %d\n",
1091                                  priv->conf_listen_interval);
1092                         break;
1093                 }
1094                 case SDD_REFERENCE_FREQUENCY_ELT_ID: {
1095                         u16 clk = le16_to_cpu(*((__le16 *)(p + 2)));
1096                         if (clk != priv->hw_refclk)
1097                                 pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n",
1098                                         clk, priv->hw_refclk);
1099                         break;
1100                 }
1101                 default:
1102                         break;
1103                 }
1104                 p += p[1] + 2;
1105         }
1106
1107         if (!priv->bt_present) {
1108                 pr_debug("PTA element NOT found.\n");
1109                 priv->conf_listen_interval = 0;
1110         }
1111         return ret;
1112 }
1113
1114 int cw1200_setup_mac(struct cw1200_common *priv)
1115 {
1116         int ret = 0;
1117
1118         /* NOTE: There is a bug in FW: it reports signal
1119          * as RSSI if RSSI subscription is enabled.
1120          * It's not enough to set WSM_RCPI_RSSI_USE_RSSI.
1121          *
1122          * NOTE2: RSSI based reports have been switched to RCPI, since
1123          * FW has a bug and RSSI reported values are not stable,
1124          * what can lead to signal level oscilations in user-end applications
1125          */
1126         struct wsm_rcpi_rssi_threshold threshold = {
1127                 .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE |
1128                 WSM_RCPI_RSSI_DONT_USE_UPPER |
1129                 WSM_RCPI_RSSI_DONT_USE_LOWER,
1130                 .rollingAverageCount = 16,
1131         };
1132
1133         struct wsm_configuration cfg = {
1134                 .dot11StationId = &priv->mac_addr[0],
1135         };
1136
1137         /* Remember the decission here to make sure, we will handle
1138          * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS
1139          */
1140         if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI)
1141                 priv->cqm_use_rssi = true;
1142
1143         if (!priv->sdd) {
1144                 ret = reject_firmware(&priv->sdd, priv->sdd_path, priv->pdev);
1145                 if (ret) {
1146                         pr_err("Can't load sdd file %s.\n", priv->sdd_path);
1147                         return ret;
1148                 }
1149                 cw1200_parse_sdd_file(priv);
1150         }
1151
1152         cfg.dpdData = priv->sdd->data;
1153         cfg.dpdData_size = priv->sdd->size;
1154         ret = wsm_configuration(priv, &cfg);
1155         if (ret)
1156                 return ret;
1157
1158         /* Configure RSSI/SCPI reporting as RSSI. */
1159         wsm_set_rcpi_rssi_threshold(priv, &threshold);
1160
1161         return 0;
1162 }
1163
1164 static void cw1200_join_complete(struct cw1200_common *priv)
1165 {
1166         pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status);
1167
1168         priv->join_pending = false;
1169         if (priv->join_complete_status) {
1170                 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1171                 cw1200_update_listening(priv, priv->listening);
1172                 cw1200_do_unjoin(priv);
1173                 ieee80211_connection_loss(priv->vif);
1174         } else {
1175                 if (priv->mode == NL80211_IFTYPE_ADHOC)
1176                         priv->join_status = CW1200_JOIN_STATUS_IBSS;
1177                 else
1178                         priv->join_status = CW1200_JOIN_STATUS_PRE_STA;
1179         }
1180         wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */
1181 }
1182
1183 void cw1200_join_complete_work(struct work_struct *work)
1184 {
1185         struct cw1200_common *priv =
1186                 container_of(work, struct cw1200_common, join_complete_work);
1187         mutex_lock(&priv->conf_mutex);
1188         cw1200_join_complete(priv);
1189         mutex_unlock(&priv->conf_mutex);
1190 }
1191
1192 void cw1200_join_complete_cb(struct cw1200_common *priv,
1193                              struct wsm_join_complete *arg)
1194 {
1195         pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n",
1196                  arg->status);
1197
1198         if (cancel_delayed_work(&priv->join_timeout)) {
1199                 priv->join_complete_status = arg->status;
1200                 queue_work(priv->workqueue, &priv->join_complete_work);
1201         }
1202 }
1203
1204 /* MUST be called with tx_lock held!  It will be unlocked for us. */
1205 static void cw1200_do_join(struct cw1200_common *priv)
1206 {
1207         const u8 *bssid;
1208         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
1209         struct cfg80211_bss *bss = NULL;
1210         struct wsm_protected_mgmt_policy mgmt_policy;
1211         struct wsm_join join = {
1212                 .mode = priv->vif->cfg.ibss_joined ?
1213                 WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS,
1214                 .preamble_type = WSM_JOIN_PREAMBLE_LONG,
1215                 .probe_for_join = 1,
1216                 .atim_window = 0,
1217                 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
1218                                                           conf->basic_rates),
1219         };
1220         if (delayed_work_pending(&priv->join_timeout)) {
1221                 pr_warn("[STA] - Join request already pending, skipping..\n");
1222                 wsm_unlock_tx(priv);
1223                 return;
1224         }
1225
1226         if (priv->join_status)
1227                 cw1200_do_unjoin(priv);
1228
1229         bssid = priv->vif->bss_conf.bssid;
1230
1231         bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel, bssid, NULL, 0,
1232                                IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
1233
1234         if (!bss && !priv->vif->cfg.ibss_joined) {
1235                 wsm_unlock_tx(priv);
1236                 return;
1237         }
1238
1239         mutex_lock(&priv->conf_mutex);
1240
1241         /* Under the conf lock: check scan status and
1242          * bail out if it is in progress.
1243          */
1244         if (atomic_read(&priv->scan.in_progress)) {
1245                 wsm_unlock_tx(priv);
1246                 goto done_put;
1247         }
1248
1249         priv->join_pending = true;
1250
1251         /* Sanity check basic rates */
1252         if (!join.basic_rate_set)
1253                 join.basic_rate_set = 7;
1254
1255         /* Sanity check beacon interval */
1256         if (!priv->beacon_int)
1257                 priv->beacon_int = 1;
1258
1259         join.beacon_interval = priv->beacon_int;
1260
1261         /* BT Coex related changes */
1262         if (priv->bt_present) {
1263                 if (((priv->conf_listen_interval * 100) %
1264                      priv->beacon_int) == 0)
1265                         priv->listen_interval =
1266                                 ((priv->conf_listen_interval * 100) /
1267                                  priv->beacon_int);
1268                 else
1269                         priv->listen_interval =
1270                                 ((priv->conf_listen_interval * 100) /
1271                                  priv->beacon_int + 1);
1272         }
1273
1274         if (priv->hw->conf.ps_dtim_period)
1275                 priv->join_dtim_period = priv->hw->conf.ps_dtim_period;
1276         join.dtim_period = priv->join_dtim_period;
1277
1278         join.channel_number = priv->channel->hw_value;
1279         join.band = (priv->channel->band == NL80211_BAND_5GHZ) ?
1280                 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1281
1282         memcpy(join.bssid, bssid, sizeof(join.bssid));
1283
1284         pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n",
1285                  join.bssid,
1286                  join.dtim_period, priv->beacon_int);
1287
1288         if (!priv->vif->cfg.ibss_joined) {
1289                 const u8 *ssidie;
1290                 rcu_read_lock();
1291                 ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1292                 if (ssidie) {
1293                         join.ssid_len = ssidie[1];
1294                         memcpy(join.ssid, &ssidie[2], join.ssid_len);
1295                 }
1296                 rcu_read_unlock();
1297         }
1298
1299         if (priv->vif->p2p) {
1300                 join.flags |= WSM_JOIN_FLAGS_P2P_GO;
1301                 join.basic_rate_set =
1302                         cw1200_rate_mask_to_wsm(priv, 0xFF0);
1303         }
1304
1305         /* Enable asynchronous join calls */
1306         if (!priv->vif->cfg.ibss_joined) {
1307                 join.flags |= WSM_JOIN_FLAGS_FORCE;
1308                 join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND;
1309         }
1310
1311         wsm_flush_tx(priv);
1312
1313         /* Stay Awake for Join and Auth Timeouts and a bit more */
1314         cw1200_pm_stay_awake(&priv->pm_state,
1315                              CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT);
1316
1317         cw1200_update_listening(priv, false);
1318
1319         /* Turn on Block ACKs */
1320         wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask,
1321                                  priv->ba_rx_tid_mask);
1322
1323         /* Set up timeout */
1324         if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) {
1325                 priv->join_status = CW1200_JOIN_STATUS_JOINING;
1326                 queue_delayed_work(priv->workqueue,
1327                                    &priv->join_timeout,
1328                                    CW1200_JOIN_TIMEOUT);
1329         }
1330
1331         /* 802.11w protected mgmt frames */
1332         mgmt_policy.protectedMgmtEnable = 0;
1333         mgmt_policy.unprotectedMgmtFramesAllowed = 1;
1334         mgmt_policy.encryptionForAuthFrame = 1;
1335         wsm_set_protected_mgmt_policy(priv, &mgmt_policy);
1336
1337         /* Perform actual join */
1338         if (wsm_join(priv, &join)) {
1339                 pr_err("[STA] cw1200_join_work: wsm_join failed!\n");
1340                 cancel_delayed_work_sync(&priv->join_timeout);
1341                 cw1200_update_listening(priv, priv->listening);
1342                 /* Tx lock still held, unjoin will clear it. */
1343                 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1344                         wsm_unlock_tx(priv);
1345         } else {
1346                 if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND))
1347                         cw1200_join_complete(priv); /* Will clear tx_lock */
1348
1349                 /* Upload keys */
1350                 cw1200_upload_keys(priv);
1351
1352                 /* Due to beacon filtering it is possible that the
1353                  * AP's beacon is not known for the mac80211 stack.
1354                  * Disable filtering temporary to make sure the stack
1355                  * receives at least one
1356                  */
1357                 priv->disable_beacon_filter = true;
1358         }
1359         cw1200_update_filtering(priv);
1360
1361 done_put:
1362         mutex_unlock(&priv->conf_mutex);
1363         if (bss)
1364                 cfg80211_put_bss(priv->hw->wiphy, bss);
1365 }
1366
1367 void cw1200_join_timeout(struct work_struct *work)
1368 {
1369         struct cw1200_common *priv =
1370                 container_of(work, struct cw1200_common, join_timeout.work);
1371         pr_debug("[WSM] Join timed out.\n");
1372         wsm_lock_tx(priv);
1373         if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1374                 wsm_unlock_tx(priv);
1375 }
1376
1377 static void cw1200_do_unjoin(struct cw1200_common *priv)
1378 {
1379         struct wsm_reset reset = {
1380                 .reset_statistics = true,
1381         };
1382
1383         cancel_delayed_work_sync(&priv->join_timeout);
1384
1385         mutex_lock(&priv->conf_mutex);
1386         priv->join_pending = false;
1387
1388         if (atomic_read(&priv->scan.in_progress)) {
1389                 if (priv->delayed_unjoin)
1390                         wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n");
1391                 else
1392                         priv->delayed_unjoin = true;
1393                 goto done;
1394         }
1395
1396         priv->delayed_link_loss = false;
1397
1398         if (!priv->join_status)
1399                 goto done;
1400
1401         if (priv->join_status == CW1200_JOIN_STATUS_AP)
1402                 goto done;
1403
1404         cancel_work_sync(&priv->update_filtering_work);
1405         cancel_work_sync(&priv->set_beacon_wakeup_period_work);
1406         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1407
1408         /* Unjoin is a reset. */
1409         wsm_flush_tx(priv);
1410         wsm_keep_alive_period(priv, 0);
1411         wsm_reset(priv, &reset);
1412         wsm_set_output_power(priv, priv->output_power * 10);
1413         priv->join_dtim_period = 0;
1414         cw1200_setup_mac(priv);
1415         cw1200_free_event_queue(priv);
1416         cancel_work_sync(&priv->event_handler);
1417         cw1200_update_listening(priv, priv->listening);
1418         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1419
1420         /* Disable Block ACKs */
1421         wsm_set_block_ack_policy(priv, 0, 0);
1422
1423         priv->disable_beacon_filter = false;
1424         cw1200_update_filtering(priv);
1425         memset(&priv->association_mode, 0,
1426                sizeof(priv->association_mode));
1427         memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1428         priv->setbssparams_done = false;
1429         memset(&priv->firmware_ps_mode, 0,
1430                sizeof(priv->firmware_ps_mode));
1431
1432         pr_debug("[STA] Unjoin completed.\n");
1433
1434 done:
1435         mutex_unlock(&priv->conf_mutex);
1436 }
1437
1438 void cw1200_unjoin_work(struct work_struct *work)
1439 {
1440         struct cw1200_common *priv =
1441                 container_of(work, struct cw1200_common, unjoin_work);
1442
1443         cw1200_do_unjoin(priv);
1444
1445         /* Tell the stack we're dead */
1446         ieee80211_connection_loss(priv->vif);
1447
1448         wsm_unlock_tx(priv);
1449 }
1450
1451 int cw1200_enable_listening(struct cw1200_common *priv)
1452 {
1453         struct wsm_start start = {
1454                 .mode = WSM_START_MODE_P2P_DEV,
1455                 .band = WSM_PHY_BAND_2_4G,
1456                 .beacon_interval = 100,
1457                 .dtim_period = 1,
1458                 .probe_delay = 0,
1459                 .basic_rate_set = 0x0F,
1460         };
1461
1462         if (priv->channel) {
1463                 start.band = priv->channel->band == NL80211_BAND_5GHZ ?
1464                              WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1465                 start.channel_number = priv->channel->hw_value;
1466         } else {
1467                 start.band = WSM_PHY_BAND_2_4G;
1468                 start.channel_number = 1;
1469         }
1470
1471         return wsm_start(priv, &start);
1472 }
1473
1474 int cw1200_disable_listening(struct cw1200_common *priv)
1475 {
1476         int ret;
1477         struct wsm_reset reset = {
1478                 .reset_statistics = true,
1479         };
1480         ret = wsm_reset(priv, &reset);
1481         return ret;
1482 }
1483
1484 void cw1200_update_listening(struct cw1200_common *priv, bool enabled)
1485 {
1486         if (enabled) {
1487                 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) {
1488                         if (!cw1200_enable_listening(priv))
1489                                 priv->join_status = CW1200_JOIN_STATUS_MONITOR;
1490                         wsm_set_probe_responder(priv, true);
1491                 }
1492         } else {
1493                 if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) {
1494                         if (!cw1200_disable_listening(priv))
1495                                 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1496                         wsm_set_probe_responder(priv, false);
1497                 }
1498         }
1499 }
1500
1501 int cw1200_set_uapsd_param(struct cw1200_common *priv,
1502                            const struct wsm_edca_params *arg)
1503 {
1504         int ret;
1505         u16 uapsd_flags = 0;
1506
1507         /* Here's the mapping AC [queue, bit]
1508          *  VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0]
1509          */
1510
1511         if (arg->uapsd_enable[0])
1512                 uapsd_flags |= 1 << 3;
1513
1514         if (arg->uapsd_enable[1])
1515                 uapsd_flags |= 1 << 2;
1516
1517         if (arg->uapsd_enable[2])
1518                 uapsd_flags |= 1 << 1;
1519
1520         if (arg->uapsd_enable[3])
1521                 uapsd_flags |= 1;
1522
1523         /* Currently pseudo U-APSD operation is not supported, so setting
1524          * MinAutoTriggerInterval, MaxAutoTriggerInterval and
1525          * AutoTriggerStep to 0
1526          */
1527
1528         priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags);
1529         priv->uapsd_info.min_auto_trigger_interval = 0;
1530         priv->uapsd_info.max_auto_trigger_interval = 0;
1531         priv->uapsd_info.auto_trigger_step = 0;
1532
1533         ret = wsm_set_uapsd_info(priv, &priv->uapsd_info);
1534         return ret;
1535 }
1536
1537 /* ******************************************************************** */
1538 /* AP API                                                               */
1539
1540 int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1541                    struct ieee80211_sta *sta)
1542 {
1543         struct cw1200_common *priv = hw->priv;
1544         struct cw1200_sta_priv *sta_priv =
1545                         (struct cw1200_sta_priv *)&sta->drv_priv;
1546         struct cw1200_link_entry *entry;
1547         struct sk_buff *skb;
1548
1549         if (priv->mode != NL80211_IFTYPE_AP)
1550                 return 0;
1551
1552         sta_priv->link_id = cw1200_find_link_id(priv, sta->addr);
1553         if (WARN_ON(!sta_priv->link_id)) {
1554                 wiphy_info(priv->hw->wiphy,
1555                            "[AP] No more link IDs available.\n");
1556                 return -ENOENT;
1557         }
1558
1559         entry = &priv->link_id_db[sta_priv->link_id - 1];
1560         spin_lock_bh(&priv->ps_state_lock);
1561         if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) ==
1562                                         IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
1563                 priv->sta_asleep_mask |= BIT(sta_priv->link_id);
1564         entry->status = CW1200_LINK_HARD;
1565         while ((skb = skb_dequeue(&entry->rx_queue)))
1566                 ieee80211_rx_irqsafe(priv->hw, skb);
1567         spin_unlock_bh(&priv->ps_state_lock);
1568         return 0;
1569 }
1570
1571 int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1572                       struct ieee80211_sta *sta)
1573 {
1574         struct cw1200_common *priv = hw->priv;
1575         struct cw1200_sta_priv *sta_priv =
1576                         (struct cw1200_sta_priv *)&sta->drv_priv;
1577         struct cw1200_link_entry *entry;
1578
1579         if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id)
1580                 return 0;
1581
1582         entry = &priv->link_id_db[sta_priv->link_id - 1];
1583         spin_lock_bh(&priv->ps_state_lock);
1584         entry->status = CW1200_LINK_RESERVE;
1585         entry->timestamp = jiffies;
1586         wsm_lock_tx_async(priv);
1587         if (queue_work(priv->workqueue, &priv->link_id_work) <= 0)
1588                 wsm_unlock_tx(priv);
1589         spin_unlock_bh(&priv->ps_state_lock);
1590         flush_workqueue(priv->workqueue);
1591         return 0;
1592 }
1593
1594 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
1595                                 struct ieee80211_vif *vif,
1596                                 enum sta_notify_cmd notify_cmd,
1597                                 int link_id)
1598 {
1599         struct cw1200_common *priv = dev->priv;
1600         u32 bit, prev;
1601
1602         /* Zero link id means "for all link IDs" */
1603         if (link_id)
1604                 bit = BIT(link_id);
1605         else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE))
1606                 bit = 0;
1607         else
1608                 bit = priv->link_id_map;
1609         prev = priv->sta_asleep_mask & bit;
1610
1611         switch (notify_cmd) {
1612         case STA_NOTIFY_SLEEP:
1613                 if (!prev) {
1614                         if (priv->buffered_multicasts &&
1615                             !priv->sta_asleep_mask)
1616                                 queue_work(priv->workqueue,
1617                                            &priv->multicast_start_work);
1618                         priv->sta_asleep_mask |= bit;
1619                 }
1620                 break;
1621         case STA_NOTIFY_AWAKE:
1622                 if (prev) {
1623                         priv->sta_asleep_mask &= ~bit;
1624                         priv->pspoll_mask &= ~bit;
1625                         if (priv->tx_multicast && link_id &&
1626                             !priv->sta_asleep_mask)
1627                                 queue_work(priv->workqueue,
1628                                            &priv->multicast_stop_work);
1629                         cw1200_bh_wakeup(priv);
1630                 }
1631                 break;
1632         }
1633 }
1634
1635 void cw1200_sta_notify(struct ieee80211_hw *dev,
1636                        struct ieee80211_vif *vif,
1637                        enum sta_notify_cmd notify_cmd,
1638                        struct ieee80211_sta *sta)
1639 {
1640         struct cw1200_common *priv = dev->priv;
1641         struct cw1200_sta_priv *sta_priv =
1642                 (struct cw1200_sta_priv *)&sta->drv_priv;
1643
1644         spin_lock_bh(&priv->ps_state_lock);
1645         __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id);
1646         spin_unlock_bh(&priv->ps_state_lock);
1647 }
1648
1649 static void cw1200_ps_notify(struct cw1200_common *priv,
1650                       int link_id, bool ps)
1651 {
1652         if (link_id > CW1200_MAX_STA_IN_AP_MODE)
1653                 return;
1654
1655         pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n",
1656                  ps ? "Stop" : "Start",
1657                  link_id, priv->sta_asleep_mask);
1658
1659         __cw1200_sta_notify(priv->hw, priv->vif,
1660                             ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id);
1661 }
1662
1663 static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set)
1664 {
1665         struct sk_buff *skb;
1666         struct wsm_update_ie update_ie = {
1667                 .what = WSM_UPDATE_IE_BEACON,
1668                 .count = 1,
1669         };
1670         u16 tim_offset, tim_length;
1671
1672         pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis");
1673
1674         skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
1675                                        &tim_offset, &tim_length, 0);
1676         if (!skb) {
1677                 if (!__cw1200_flush(priv, true))
1678                         wsm_unlock_tx(priv);
1679                 return -ENOENT;
1680         }
1681
1682         if (tim_offset && tim_length >= 6) {
1683                 /* Ignore DTIM count from mac80211:
1684                  * firmware handles DTIM internally.
1685                  */
1686                 skb->data[tim_offset + 2] = 0;
1687
1688                 /* Set/reset aid0 bit */
1689                 if (aid0_bit_set)
1690                         skb->data[tim_offset + 4] |= 1;
1691                 else
1692                         skb->data[tim_offset + 4] &= ~1;
1693         }
1694
1695         update_ie.ies = &skb->data[tim_offset];
1696         update_ie.length = tim_length;
1697         wsm_update_ie(priv, &update_ie);
1698
1699         dev_kfree_skb(skb);
1700
1701         return 0;
1702 }
1703
1704 void cw1200_set_tim_work(struct work_struct *work)
1705 {
1706         struct cw1200_common *priv =
1707                 container_of(work, struct cw1200_common, set_tim_work);
1708         (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set);
1709 }
1710
1711 int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1712                    bool set)
1713 {
1714         struct cw1200_common *priv = dev->priv;
1715         queue_work(priv->workqueue, &priv->set_tim_work);
1716         return 0;
1717 }
1718
1719 void cw1200_set_cts_work(struct work_struct *work)
1720 {
1721         struct cw1200_common *priv =
1722                 container_of(work, struct cw1200_common, set_cts_work);
1723
1724         u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0};
1725         struct wsm_update_ie update_ie = {
1726                 .what = WSM_UPDATE_IE_BEACON,
1727                 .count = 1,
1728                 .ies = erp_ie,
1729                 .length = 3,
1730         };
1731         u32 erp_info;
1732         __le32 use_cts_prot;
1733         mutex_lock(&priv->conf_mutex);
1734         erp_info = priv->erp_info;
1735         mutex_unlock(&priv->conf_mutex);
1736         use_cts_prot =
1737                 erp_info & WLAN_ERP_USE_PROTECTION ?
1738                 __cpu_to_le32(1) : 0;
1739
1740         erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info;
1741
1742         pr_debug("[STA] ERP information 0x%x\n", erp_info);
1743
1744         wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION,
1745                       &use_cts_prot, sizeof(use_cts_prot));
1746         wsm_update_ie(priv, &update_ie);
1747
1748         return;
1749 }
1750
1751 static int cw1200_set_btcoexinfo(struct cw1200_common *priv)
1752 {
1753         struct wsm_override_internal_txrate arg;
1754         int ret = 0;
1755
1756         if (priv->mode == NL80211_IFTYPE_STATION) {
1757                 /* Plumb PSPOLL and NULL template */
1758                 cw1200_upload_pspoll(priv);
1759                 cw1200_upload_null(priv);
1760                 cw1200_upload_qosnull(priv);
1761         } else {
1762                 return 0;
1763         }
1764
1765         memset(&arg, 0, sizeof(struct wsm_override_internal_txrate));
1766
1767         if (!priv->vif->p2p) {
1768                 /* STATION mode */
1769                 if (priv->bss_params.operational_rate_set & ~0xF) {
1770                         pr_debug("[STA] STA has ERP rates\n");
1771                         /* G or BG mode */
1772                         arg.internalTxRate = (__ffs(
1773                         priv->bss_params.operational_rate_set & ~0xF));
1774                 } else {
1775                         pr_debug("[STA] STA has non ERP rates\n");
1776                         /* B only mode */
1777                         arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1778                 }
1779                 arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1780         } else {
1781                 /* P2P mode */
1782                 arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1783                 arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1784         }
1785
1786         pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n",
1787                  priv->mode,
1788                  arg.internalTxRate,
1789                  arg.nonErpInternalTxRate);
1790
1791         ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE,
1792                             &arg, sizeof(arg));
1793
1794         return ret;
1795 }
1796
1797 void cw1200_bss_info_changed(struct ieee80211_hw *dev,
1798                              struct ieee80211_vif *vif,
1799                              struct ieee80211_bss_conf *info,
1800                              u64 changed)
1801 {
1802         struct cw1200_common *priv = dev->priv;
1803         bool do_join = false;
1804
1805         mutex_lock(&priv->conf_mutex);
1806
1807         pr_debug("BSS CHANGED:  %llx\n", changed);
1808
1809         /* TODO: BSS_CHANGED_QOS */
1810         /* TODO: BSS_CHANGED_TXPOWER */
1811
1812         if (changed & BSS_CHANGED_ARP_FILTER) {
1813                 struct wsm_mib_arp_ipv4_filter filter = {0};
1814                 int i;
1815
1816                 pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n",
1817                          vif->cfg.arp_addr_cnt);
1818
1819                 /* Currently only one IP address is supported by firmware.
1820                  * In case of more IPs arp filtering will be disabled.
1821                  */
1822                 if (vif->cfg.arp_addr_cnt > 0 &&
1823                     vif->cfg.arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) {
1824                         for (i = 0; i < vif->cfg.arp_addr_cnt; i++) {
1825                                 filter.ipv4addrs[i] = vif->cfg.arp_addr_list[i];
1826                                 pr_debug("[STA] addr[%d]: 0x%X\n",
1827                                          i, filter.ipv4addrs[i]);
1828                         }
1829                         filter.enable = __cpu_to_le32(1);
1830                 }
1831
1832                 pr_debug("[STA] arp ip filter enable: %d\n",
1833                          __le32_to_cpu(filter.enable));
1834
1835                 wsm_set_arp_ipv4_filter(priv, &filter);
1836         }
1837
1838         if (changed &
1839             (BSS_CHANGED_BEACON |
1840              BSS_CHANGED_AP_PROBE_RESP |
1841              BSS_CHANGED_BSSID |
1842              BSS_CHANGED_SSID |
1843              BSS_CHANGED_IBSS)) {
1844                 pr_debug("BSS_CHANGED_BEACON\n");
1845                 priv->beacon_int = info->beacon_int;
1846                 cw1200_update_beaconing(priv);
1847                 cw1200_upload_beacon(priv);
1848         }
1849
1850         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1851                 pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon);
1852
1853                 if (priv->enable_beacon != info->enable_beacon) {
1854                         cw1200_enable_beaconing(priv, info->enable_beacon);
1855                         priv->enable_beacon = info->enable_beacon;
1856                 }
1857         }
1858
1859         if (changed & BSS_CHANGED_BEACON_INT) {
1860                 pr_debug("CHANGED_BEACON_INT\n");
1861                 if (vif->cfg.ibss_joined)
1862                         do_join = true;
1863                 else if (priv->join_status == CW1200_JOIN_STATUS_AP)
1864                         cw1200_update_beaconing(priv);
1865         }
1866
1867         /* assoc/disassoc, or maybe AID changed */
1868         if (changed & BSS_CHANGED_ASSOC) {
1869                 wsm_lock_tx(priv);
1870                 priv->wep_default_key_id = -1;
1871                 wsm_unlock_tx(priv);
1872         }
1873
1874         if (changed & BSS_CHANGED_BSSID) {
1875                 pr_debug("BSS_CHANGED_BSSID\n");
1876                 do_join = true;
1877         }
1878
1879         if (changed &
1880             (BSS_CHANGED_ASSOC |
1881              BSS_CHANGED_BSSID |
1882              BSS_CHANGED_IBSS |
1883              BSS_CHANGED_BASIC_RATES |
1884              BSS_CHANGED_HT)) {
1885                 pr_debug("BSS_CHANGED_ASSOC\n");
1886                 if (vif->cfg.assoc) {
1887                         if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) {
1888                                 ieee80211_connection_loss(vif);
1889                                 mutex_unlock(&priv->conf_mutex);
1890                                 return;
1891                         } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) {
1892                                 priv->join_status = CW1200_JOIN_STATUS_STA;
1893                         }
1894                 } else {
1895                         do_join = true;
1896                 }
1897
1898                 if (vif->cfg.assoc || vif->cfg.ibss_joined) {
1899                         struct ieee80211_sta *sta = NULL;
1900                         __le32 htprot = 0;
1901
1902                         if (info->dtim_period)
1903                                 priv->join_dtim_period = info->dtim_period;
1904                         priv->beacon_int = info->beacon_int;
1905
1906                         rcu_read_lock();
1907
1908                         if (info->bssid && !vif->cfg.ibss_joined)
1909                                 sta = ieee80211_find_sta(vif, info->bssid);
1910                         if (sta) {
1911                                 priv->ht_info.ht_cap = sta->deflink.ht_cap;
1912                                 priv->bss_params.operational_rate_set =
1913                                         cw1200_rate_mask_to_wsm(priv,
1914                                                 sta->deflink.supp_rates[priv->channel->band]);
1915                                 priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef);
1916                                 priv->ht_info.operation_mode = info->ht_operation_mode;
1917                         } else {
1918                                 memset(&priv->ht_info, 0,
1919                                        sizeof(priv->ht_info));
1920                                 priv->bss_params.operational_rate_set = -1;
1921                         }
1922                         rcu_read_unlock();
1923
1924                         /* Non Greenfield stations present */
1925                         if (priv->ht_info.operation_mode &
1926                             IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)
1927                                 htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT);
1928
1929                         /* Set HT protection method */
1930                         htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2);
1931
1932                         /* TODO:
1933                          * STBC_param.dual_cts
1934                          *  STBC_param.LSIG_TXOP_FILL
1935                          */
1936
1937                         wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION,
1938                                       &htprot, sizeof(htprot));
1939
1940                         priv->association_mode.greenfield =
1941                                 cw1200_ht_greenfield(&priv->ht_info);
1942                         priv->association_mode.flags =
1943                                 WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES |
1944                                 WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE |
1945                                 WSM_ASSOCIATION_MODE_USE_HT_MODE |
1946                                 WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET |
1947                                 WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING;
1948                         priv->association_mode.preamble =
1949                                 info->use_short_preamble ?
1950                                 WSM_JOIN_PREAMBLE_SHORT :
1951                                 WSM_JOIN_PREAMBLE_LONG;
1952                         priv->association_mode.basic_rate_set = __cpu_to_le32(
1953                                 cw1200_rate_mask_to_wsm(priv,
1954                                                         info->basic_rates));
1955                         priv->association_mode.mpdu_start_spacing =
1956                                 cw1200_ht_ampdu_density(&priv->ht_info);
1957
1958                         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1959                         cancel_work_sync(&priv->unjoin_work);
1960
1961                         priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count;
1962                         priv->bss_params.aid = vif->cfg.aid;
1963
1964                         if (priv->join_dtim_period < 1)
1965                                 priv->join_dtim_period = 1;
1966
1967                         pr_debug("[STA] DTIM %d, interval: %d\n",
1968                                  priv->join_dtim_period, priv->beacon_int);
1969                         pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n",
1970                                  priv->association_mode.preamble,
1971                                  priv->association_mode.greenfield,
1972                                  priv->bss_params.aid,
1973                                  priv->bss_params.operational_rate_set,
1974                                  priv->association_mode.basic_rate_set);
1975                         wsm_set_association_mode(priv, &priv->association_mode);
1976
1977                         if (!vif->cfg.ibss_joined) {
1978                                 wsm_keep_alive_period(priv, 30 /* sec */);
1979                                 wsm_set_bss_params(priv, &priv->bss_params);
1980                                 priv->setbssparams_done = true;
1981                                 cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work);
1982                                 cw1200_set_pm(priv, &priv->powersave_mode);
1983                         }
1984                         if (priv->vif->p2p) {
1985                                 pr_debug("[STA] Setting p2p powersave configuration.\n");
1986                                 wsm_set_p2p_ps_modeinfo(priv,
1987                                                         &priv->p2p_ps_modeinfo);
1988                         }
1989                         if (priv->bt_present)
1990                                 cw1200_set_btcoexinfo(priv);
1991                 } else {
1992                         memset(&priv->association_mode, 0,
1993                                sizeof(priv->association_mode));
1994                         memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1995                 }
1996         }
1997
1998         /* ERP Protection */
1999         if (changed & (BSS_CHANGED_ASSOC |
2000                        BSS_CHANGED_ERP_CTS_PROT |
2001                        BSS_CHANGED_ERP_PREAMBLE)) {
2002                 u32 prev_erp_info = priv->erp_info;
2003                 if (info->use_cts_prot)
2004                         priv->erp_info |= WLAN_ERP_USE_PROTECTION;
2005                 else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT))
2006                         priv->erp_info &= ~WLAN_ERP_USE_PROTECTION;
2007
2008                 if (info->use_short_preamble)
2009                         priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE;
2010                 else
2011                         priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE;
2012
2013                 pr_debug("[STA] ERP Protection: %x\n", priv->erp_info);
2014
2015                 if (prev_erp_info != priv->erp_info)
2016                         queue_work(priv->workqueue, &priv->set_cts_work);
2017         }
2018
2019         /* ERP Slottime */
2020         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) {
2021                 __le32 slot_time = info->use_short_slot ?
2022                         __cpu_to_le32(9) : __cpu_to_le32(20);
2023                 pr_debug("[STA] Slot time: %d us.\n",
2024                          __le32_to_cpu(slot_time));
2025                 wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME,
2026                               &slot_time, sizeof(slot_time));
2027         }
2028
2029         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) {
2030                 struct wsm_rcpi_rssi_threshold threshold = {
2031                         .rollingAverageCount = 8,
2032                 };
2033                 pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n",
2034                          info->cqm_rssi_thold, info->cqm_rssi_hyst);
2035                 priv->cqm_rssi_thold = info->cqm_rssi_thold;
2036                 priv->cqm_rssi_hyst = info->cqm_rssi_hyst;
2037
2038                 if (info->cqm_rssi_thold || info->cqm_rssi_hyst) {
2039                         /* RSSI subscription enabled */
2040                         /* TODO: It's not a correct way of setting threshold.
2041                          * Upper and lower must be set equal here and adjusted
2042                          * in callback. However current implementation is much
2043                          * more relaible and stable.
2044                          */
2045
2046                         /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
2047                          * RSSI = RCPI / 2 - 110
2048                          */
2049                         if (priv->cqm_use_rssi) {
2050                                 threshold.upperThreshold =
2051                                         info->cqm_rssi_thold + info->cqm_rssi_hyst;
2052                                 threshold.lowerThreshold =
2053                                         info->cqm_rssi_thold;
2054                                 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2055                         } else {
2056                                 threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2;
2057                                 threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2;
2058                         }
2059                         threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE;
2060                 } else {
2061                         /* There is a bug in FW, see sta.c. We have to enable
2062                          * dummy subscription to get correct RSSI values.
2063                          */
2064                         threshold.rssiRcpiMode |=
2065                                 WSM_RCPI_RSSI_THRESHOLD_ENABLE |
2066                                 WSM_RCPI_RSSI_DONT_USE_UPPER |
2067                                 WSM_RCPI_RSSI_DONT_USE_LOWER;
2068                         if (priv->cqm_use_rssi)
2069                                 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2070                 }
2071                 wsm_set_rcpi_rssi_threshold(priv, &threshold);
2072         }
2073         mutex_unlock(&priv->conf_mutex);
2074
2075         if (do_join) {
2076                 wsm_lock_tx(priv);
2077                 cw1200_do_join(priv); /* Will unlock it for us */
2078         }
2079 }
2080
2081 void cw1200_multicast_start_work(struct work_struct *work)
2082 {
2083         struct cw1200_common *priv =
2084                 container_of(work, struct cw1200_common, multicast_start_work);
2085         long tmo = priv->join_dtim_period *
2086                         (priv->beacon_int + 20) * HZ / 1024;
2087
2088         cancel_work_sync(&priv->multicast_stop_work);
2089
2090         if (!priv->aid0_bit_set) {
2091                 wsm_lock_tx(priv);
2092                 cw1200_set_tim_impl(priv, true);
2093                 priv->aid0_bit_set = true;
2094                 mod_timer(&priv->mcast_timeout, jiffies + tmo);
2095                 wsm_unlock_tx(priv);
2096         }
2097 }
2098
2099 void cw1200_multicast_stop_work(struct work_struct *work)
2100 {
2101         struct cw1200_common *priv =
2102                 container_of(work, struct cw1200_common, multicast_stop_work);
2103
2104         if (priv->aid0_bit_set) {
2105                 del_timer_sync(&priv->mcast_timeout);
2106                 wsm_lock_tx(priv);
2107                 priv->aid0_bit_set = false;
2108                 cw1200_set_tim_impl(priv, false);
2109                 wsm_unlock_tx(priv);
2110         }
2111 }
2112
2113 void cw1200_mcast_timeout(struct timer_list *t)
2114 {
2115         struct cw1200_common *priv = from_timer(priv, t, mcast_timeout);
2116
2117         wiphy_warn(priv->hw->wiphy,
2118                    "Multicast delivery timeout.\n");
2119         spin_lock_bh(&priv->ps_state_lock);
2120         priv->tx_multicast = priv->aid0_bit_set &&
2121                         priv->buffered_multicasts;
2122         if (priv->tx_multicast)
2123                 cw1200_bh_wakeup(priv);
2124         spin_unlock_bh(&priv->ps_state_lock);
2125 }
2126
2127 int cw1200_ampdu_action(struct ieee80211_hw *hw,
2128                         struct ieee80211_vif *vif,
2129                         struct ieee80211_ampdu_params *params)
2130 {
2131         /* Aggregation is implemented fully in firmware,
2132          * including block ack negotiation. Do not allow
2133          * mac80211 stack to do anything: it interferes with
2134          * the firmware.
2135          */
2136
2137         /* Note that we still need this function stubbed. */
2138         return -ENOTSUPP;
2139 }
2140
2141 /* ******************************************************************** */
2142 /* WSM callback                                                         */
2143 void cw1200_suspend_resume(struct cw1200_common *priv,
2144                           struct wsm_suspend_resume *arg)
2145 {
2146         pr_debug("[AP] %s: %s\n",
2147                  arg->stop ? "stop" : "start",
2148                  arg->multicast ? "broadcast" : "unicast");
2149
2150         if (arg->multicast) {
2151                 bool cancel_tmo = false;
2152                 spin_lock_bh(&priv->ps_state_lock);
2153                 if (arg->stop) {
2154                         priv->tx_multicast = false;
2155                 } else {
2156                         /* Firmware sends this indication every DTIM if there
2157                          * is a STA in powersave connected. There is no reason
2158                          * to suspend, following wakeup will consume much more
2159                          * power than it could be saved.
2160                          */
2161                         cw1200_pm_stay_awake(&priv->pm_state,
2162                                              priv->join_dtim_period *
2163                                              (priv->beacon_int + 20) * HZ / 1024);
2164                         priv->tx_multicast = (priv->aid0_bit_set &&
2165                                               priv->buffered_multicasts);
2166                         if (priv->tx_multicast) {
2167                                 cancel_tmo = true;
2168                                 cw1200_bh_wakeup(priv);
2169                         }
2170                 }
2171                 spin_unlock_bh(&priv->ps_state_lock);
2172                 if (cancel_tmo)
2173                         del_timer_sync(&priv->mcast_timeout);
2174         } else {
2175                 spin_lock_bh(&priv->ps_state_lock);
2176                 cw1200_ps_notify(priv, arg->link_id, arg->stop);
2177                 spin_unlock_bh(&priv->ps_state_lock);
2178                 if (!arg->stop)
2179                         cw1200_bh_wakeup(priv);
2180         }
2181         return;
2182 }
2183
2184 /* ******************************************************************** */
2185 /* AP privates                                                          */
2186
2187 static int cw1200_upload_beacon(struct cw1200_common *priv)
2188 {
2189         int ret = 0;
2190         struct ieee80211_mgmt *mgmt;
2191         struct wsm_template_frame frame = {
2192                 .frame_type = WSM_FRAME_TYPE_BEACON,
2193         };
2194
2195         u16 tim_offset;
2196         u16 tim_len;
2197
2198         if (priv->mode == NL80211_IFTYPE_STATION ||
2199             priv->mode == NL80211_IFTYPE_MONITOR ||
2200             priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2201                 goto done;
2202
2203         if (priv->vif->p2p)
2204                 frame.rate = WSM_TRANSMIT_RATE_6;
2205
2206         frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
2207                                              &tim_offset, &tim_len, 0);
2208         if (!frame.skb)
2209                 return -ENOMEM;
2210
2211         ret = wsm_set_template_frame(priv, &frame);
2212
2213         if (ret)
2214                 goto done;
2215
2216         /* TODO: Distill probe resp; remove TIM
2217          * and any other beacon-specific IEs
2218          */
2219         mgmt = (void *)frame.skb->data;
2220         mgmt->frame_control =
2221                 __cpu_to_le16(IEEE80211_FTYPE_MGMT |
2222                               IEEE80211_STYPE_PROBE_RESP);
2223
2224         frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE;
2225         if (priv->vif->p2p) {
2226                 ret = wsm_set_probe_responder(priv, true);
2227         } else {
2228                 ret = wsm_set_template_frame(priv, &frame);
2229                 wsm_set_probe_responder(priv, false);
2230         }
2231
2232 done:
2233         dev_kfree_skb(frame.skb);
2234
2235         return ret;
2236 }
2237
2238 static int cw1200_upload_pspoll(struct cw1200_common *priv)
2239 {
2240         int ret = 0;
2241         struct wsm_template_frame frame = {
2242                 .frame_type = WSM_FRAME_TYPE_PS_POLL,
2243                 .rate = 0xFF,
2244         };
2245
2246
2247         frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif);
2248         if (!frame.skb)
2249                 return -ENOMEM;
2250
2251         ret = wsm_set_template_frame(priv, &frame);
2252
2253         dev_kfree_skb(frame.skb);
2254
2255         return ret;
2256 }
2257
2258 static int cw1200_upload_null(struct cw1200_common *priv)
2259 {
2260         int ret = 0;
2261         struct wsm_template_frame frame = {
2262                 .frame_type = WSM_FRAME_TYPE_NULL,
2263                 .rate = 0xFF,
2264         };
2265
2266         frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif,-1, false);
2267         if (!frame.skb)
2268                 return -ENOMEM;
2269
2270         ret = wsm_set_template_frame(priv, &frame);
2271
2272         dev_kfree_skb(frame.skb);
2273
2274         return ret;
2275 }
2276
2277 static int cw1200_upload_qosnull(struct cw1200_common *priv)
2278 {
2279         /* TODO:  This needs to be implemented
2280
2281         struct wsm_template_frame frame = {
2282                 .frame_type = WSM_FRAME_TYPE_QOS_NULL,
2283                 .rate = 0xFF,
2284         };
2285
2286         frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif);
2287         if (!frame.skb)
2288                 return -ENOMEM;
2289
2290         ret = wsm_set_template_frame(priv, &frame);
2291
2292         dev_kfree_skb(frame.skb);
2293
2294         */
2295         return 0;
2296 }
2297
2298 static int cw1200_enable_beaconing(struct cw1200_common *priv,
2299                                    bool enable)
2300 {
2301         struct wsm_beacon_transmit transmit = {
2302                 .enable_beaconing = enable,
2303         };
2304
2305         return wsm_beacon_transmit(priv, &transmit);
2306 }
2307
2308 static int cw1200_start_ap(struct cw1200_common *priv)
2309 {
2310         int ret;
2311         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2312         struct wsm_start start = {
2313                 .mode = priv->vif->p2p ?
2314                                 WSM_START_MODE_P2P_GO : WSM_START_MODE_AP,
2315                 .band = (priv->channel->band == NL80211_BAND_5GHZ) ?
2316                                 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G,
2317                 .channel_number = priv->channel->hw_value,
2318                 .beacon_interval = conf->beacon_int,
2319                 .dtim_period = conf->dtim_period,
2320                 .preamble = conf->use_short_preamble ?
2321                                 WSM_JOIN_PREAMBLE_SHORT :
2322                                 WSM_JOIN_PREAMBLE_LONG,
2323                 .probe_delay = 100,
2324                 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
2325                                 conf->basic_rates),
2326         };
2327         struct wsm_operational_mode mode = {
2328                 .power_mode = cw1200_power_mode,
2329                 .disable_more_flag_usage = true,
2330         };
2331
2332         memset(start.ssid, 0, sizeof(start.ssid));
2333         if (!conf->hidden_ssid) {
2334                 start.ssid_len = priv->vif->cfg.ssid_len;
2335                 memcpy(start.ssid, priv->vif->cfg.ssid, start.ssid_len);
2336         }
2337
2338         priv->beacon_int = conf->beacon_int;
2339         priv->join_dtim_period = conf->dtim_period;
2340
2341         memset(&priv->link_id_db, 0, sizeof(priv->link_id_db));
2342
2343         pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n",
2344                  start.channel_number, start.band,
2345                  start.beacon_interval, start.dtim_period,
2346                  start.basic_rate_set,
2347                  start.ssid_len, start.ssid);
2348         ret = wsm_start(priv, &start);
2349         if (!ret)
2350                 ret = cw1200_upload_keys(priv);
2351         if (!ret && priv->vif->p2p) {
2352                 pr_debug("[AP] Setting p2p powersave configuration.\n");
2353                 wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo);
2354         }
2355         if (!ret) {
2356                 wsm_set_block_ack_policy(priv, 0, 0);
2357                 priv->join_status = CW1200_JOIN_STATUS_AP;
2358                 cw1200_update_filtering(priv);
2359         }
2360         wsm_set_operational_mode(priv, &mode);
2361         return ret;
2362 }
2363
2364 static int cw1200_update_beaconing(struct cw1200_common *priv)
2365 {
2366         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2367         struct wsm_reset reset = {
2368                 .link_id = 0,
2369                 .reset_statistics = true,
2370         };
2371
2372         if (priv->mode == NL80211_IFTYPE_AP) {
2373                 /* TODO: check if changed channel, band */
2374                 if (priv->join_status != CW1200_JOIN_STATUS_AP ||
2375                     priv->beacon_int != conf->beacon_int) {
2376                         pr_debug("ap restarting\n");
2377                         wsm_lock_tx(priv);
2378                         if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE)
2379                                 wsm_reset(priv, &reset);
2380                         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
2381                         cw1200_start_ap(priv);
2382                         wsm_unlock_tx(priv);
2383                 } else
2384                         pr_debug("ap started join_status: %d\n",
2385                                  priv->join_status);
2386         }
2387         return 0;
2388 }