drivers/net/wireless/cw1200/sta.c

   1 /*
   2  * Mac80211 STA API for ST-Ericsson CW1200 drivers
   3  *
   4  * Copyright (c) 2010, ST-Ericsson
   5  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/vmalloc.h>
  13 #include <linux/sched.h>
  14 #include <linux/firmware.h>
  15 #include <linux/module.h>
  16 #include <linux/etherdevice.h>
  17
  18 #include "cw1200.h"
  19 #include "sta.h"
  20 #include "fwio.h"
  21 #include "bh.h"
  22 #include "debug.h"
  23
  24 #ifndef ERP_INFO_BYTE_OFFSET
  25 #define ERP_INFO_BYTE_OFFSET 2
  26 #endif
  27
  28 static void cw1200_do_join(struct cw1200_common *priv);
  29 static void cw1200_do_unjoin(struct cw1200_common *priv);
  30
  31 static int cw1200_upload_beacon(struct cw1200_common *priv);
  32 static int cw1200_upload_pspoll(struct cw1200_common *priv);
  33 static int cw1200_upload_null(struct cw1200_common *priv);
  34 static int cw1200_upload_qosnull(struct cw1200_common *priv);
  35 static int cw1200_start_ap(struct cw1200_common *priv);
  36 static int cw1200_update_beaconing(struct cw1200_common *priv);
  37 static int cw1200_enable_beaconing(struct cw1200_common *priv,
  38                                    bool enable);
  39 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
  40                                 struct ieee80211_vif *vif,
  41                                 enum sta_notify_cmd notify_cmd,
  42                                 int link_id);
  43 static int __cw1200_flush(struct cw1200_common *priv, bool drop);
  44
  45 static inline void __cw1200_free_event_queue(struct list_head *list)
  46 {
  47         struct cw1200_wsm_event *event, *tmp;
  48         list_for_each_entry_safe(event, tmp, list, link) {
  49                 list_del(&event->link);
  50                 kfree(event);
  51         }
  52 }
  53
  54 /* ******************************************************************** */
  55 /* STA API                                                              */
  56
  57 int cw1200_start(struct ieee80211_hw *dev)
  58 {
  59         struct cw1200_common *priv = dev->priv;
  60         int ret = 0;
  61
  62         cw1200_pm_stay_awake(&priv->pm_state, HZ);
  63
  64         mutex_lock(&priv->conf_mutex);
  65
  66         /* default EDCA */
  67         WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false);
  68         WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false);
  69         WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false);
  70         WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false);
  71         ret = wsm_set_edca_params(priv, &priv->edca);
  72         if (ret)
  73                 goto out;
  74
  75         ret = cw1200_set_uapsd_param(priv, &priv->edca);
  76         if (ret)
  77                 goto out;
  78
  79         priv->setbssparams_done = false;
  80
  81         memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN);
  82         priv->mode = NL80211_IFTYPE_MONITOR;
  83         priv->wep_default_key_id = -1;
  84
  85         priv->cqm_beacon_loss_count = 10;
  86
  87         ret = cw1200_setup_mac(priv);
  88         if (ret)
  89                 goto out;
  90
  91 out:
  92         mutex_unlock(&priv->conf_mutex);
  93         return ret;
  94 }
  95
  96 void cw1200_stop(struct ieee80211_hw *dev)
  97 {
  98         struct cw1200_common *priv = dev->priv;
  99         LIST_HEAD(list);
 100         int i;
 101
 102         wsm_lock_tx(priv);
 103
 104         while (down_trylock(&priv->scan.lock)) {
 105                 /* Scan is in progress. Force it to stop. */
 106                 priv->scan.req = NULL;
 107                 schedule();
 108         }
 109         up(&priv->scan.lock);
 110
 111         cancel_delayed_work_sync(&priv->scan.probe_work);
 112         cancel_delayed_work_sync(&priv->scan.timeout);
 113         cancel_delayed_work_sync(&priv->clear_recent_scan_work);
 114         cancel_delayed_work_sync(&priv->join_timeout);
 115         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
 116         cancel_work_sync(&priv->unjoin_work);
 117         cancel_delayed_work_sync(&priv->link_id_gc_work);
 118         flush_workqueue(priv->workqueue);
 119         del_timer_sync(&priv->mcast_timeout);
 120         mutex_lock(&priv->conf_mutex);
 121         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
 122         priv->listening = false;
 123
 124         spin_lock(&priv->event_queue_lock);
 125         list_splice_init(&priv->event_queue, &list);
 126         spin_unlock(&priv->event_queue_lock);
 127         __cw1200_free_event_queue(&list);
 128
 129
 130         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 131         priv->join_pending = false;
 132
 133         for (i = 0; i < 4; i++)
 134                 cw1200_queue_clear(&priv->tx_queue[i]);
 135         mutex_unlock(&priv->conf_mutex);
 136         tx_policy_clean(priv);
 137
 138         /* HACK! */
 139         if (atomic_xchg(&priv->tx_lock, 1) != 1)
 140                 pr_debug("[STA] TX is force-unlocked due to stop request.\n");
 141
 142         wsm_unlock_tx(priv);
 143         atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */
 144 }
 145
 146 static int cw1200_bssloss_mitigation = 1;
 147 module_param(cw1200_bssloss_mitigation, int, 0644);
 148 MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)");
 149
 150
 151 void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
 152                              int init, int good, int bad)
 153 {
 154         int tx = 0;
 155
 156         priv->delayed_link_loss = 0;
 157         cancel_work_sync(&priv->bss_params_work);
 158
 159         pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n",
 160                  priv->bss_loss_state,
 161                  init, good, bad,
 162                  atomic_read(&priv->tx_lock),
 163                  priv->delayed_unjoin);
 164
 165         /* If we have a pending unjoin */
 166         if (priv->delayed_unjoin)
 167                 return;
 168
 169         if (init) {
 170                 queue_delayed_work(priv->workqueue,
 171                                    &priv->bss_loss_work,
 172                                    HZ);
 173                 priv->bss_loss_state = 0;
 174
 175                 /* Skip the confimration procedure in P2P case */
 176                 if (!priv->vif->p2p && !atomic_read(&priv->tx_lock))
 177                         tx = 1;
 178         } else if (good) {
 179                 cancel_delayed_work_sync(&priv->bss_loss_work);
 180                 priv->bss_loss_state = 0;
 181                 queue_work(priv->workqueue, &priv->bss_params_work);
 182         } else if (bad) {
 183                 /* XXX Should we just keep going until we time out? */
 184                 if (priv->bss_loss_state < 3)
 185                         tx = 1;
 186         } else {
 187                 cancel_delayed_work_sync(&priv->bss_loss_work);
 188                 priv->bss_loss_state = 0;
 189         }
 190
 191         /* Bypass mitigation if it's disabled */
 192         if (!cw1200_bssloss_mitigation)
 193                 tx = 0;
 194
 195         /* Spit out a NULL packet to our AP if necessary */
 196         if (tx) {
 197                 struct sk_buff *skb;
 198
 199                 priv->bss_loss_state++;
 200
 201                 skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
 202                 WARN_ON(!skb);
 203                 if (skb)
 204                         cw1200_tx(priv->hw, NULL, skb);
 205         }
 206 }
 207
 208 int cw1200_add_interface(struct ieee80211_hw *dev,
 209                          struct ieee80211_vif *vif)
 210 {
 211         int ret;
 212         struct cw1200_common *priv = dev->priv;
 213         /* __le32 auto_calibration_mode = __cpu_to_le32(1); */
 214
 215         vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 216                              IEEE80211_VIF_SUPPORTS_UAPSD |
 217                              IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 218
 219         mutex_lock(&priv->conf_mutex);
 220
 221         if (priv->mode != NL80211_IFTYPE_MONITOR) {
 222                 mutex_unlock(&priv->conf_mutex);
 223                 return -EOPNOTSUPP;
 224         }
 225
 226         switch (vif->type) {
 227         case NL80211_IFTYPE_STATION:
 228         case NL80211_IFTYPE_ADHOC:
 229         case NL80211_IFTYPE_MESH_POINT:
 230         case NL80211_IFTYPE_AP:
 231                 priv->mode = vif->type;
 232                 break;
 233         default:
 234                 mutex_unlock(&priv->conf_mutex);
 235                 return -EOPNOTSUPP;
 236         }
 237
 238         priv->vif = vif;
 239         memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
 240         ret = cw1200_setup_mac(priv);
 241         /* Enable auto-calibration */
 242         /* Exception in subsequent channel switch; disabled.
 243          *  wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE,
 244          *      &auto_calibration_mode, sizeof(auto_calibration_mode));
 245         */
 246
 247         mutex_unlock(&priv->conf_mutex);
 248         return ret;
 249 }
 250
 251 void cw1200_remove_interface(struct ieee80211_hw *dev,
 252                              struct ieee80211_vif *vif)
 253 {
 254         struct cw1200_common *priv = dev->priv;
 255         struct wsm_reset reset = {
 256                 .reset_statistics = true,
 257         };
 258         int i;
 259
 260         mutex_lock(&priv->conf_mutex);
 261         switch (priv->join_status) {
 262         case CW1200_JOIN_STATUS_JOINING:
 263         case CW1200_JOIN_STATUS_PRE_STA:
 264         case CW1200_JOIN_STATUS_STA:
 265         case CW1200_JOIN_STATUS_IBSS:
 266                 wsm_lock_tx(priv);
 267                 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
 268                         wsm_unlock_tx(priv);
 269                 break;
 270         case CW1200_JOIN_STATUS_AP:
 271                 for (i = 0; priv->link_id_map; ++i) {
 272                         if (priv->link_id_map & BIT(i)) {
 273                                 reset.link_id = i;
 274                                 wsm_reset(priv, &reset);
 275                                 priv->link_id_map &= ~BIT(i);
 276                         }
 277                 }
 278                 memset(priv->link_id_db, 0, sizeof(priv->link_id_db));
 279                 priv->sta_asleep_mask = 0;
 280                 priv->enable_beacon = false;
 281                 priv->tx_multicast = false;
 282                 priv->aid0_bit_set = false;
 283                 priv->buffered_multicasts = false;
 284                 priv->pspoll_mask = 0;
 285                 reset.link_id = 0;
 286                 wsm_reset(priv, &reset);
 287                 break;
 288         case CW1200_JOIN_STATUS_MONITOR:
 289                 cw1200_update_listening(priv, false);
 290                 break;
 291         default:
 292                 break;
 293         }
 294         priv->vif = NULL;
 295         priv->mode = NL80211_IFTYPE_MONITOR;
 296         memset(priv->mac_addr, 0, ETH_ALEN);
 297         memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo));
 298         cw1200_free_keys(priv);
 299         cw1200_setup_mac(priv);
 300         priv->listening = false;
 301         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 302         if (!__cw1200_flush(priv, true))
 303                 wsm_unlock_tx(priv);
 304
 305         mutex_unlock(&priv->conf_mutex);
 306 }
 307
 308 int cw1200_change_interface(struct ieee80211_hw *dev,
 309                             struct ieee80211_vif *vif,
 310                             enum nl80211_iftype new_type,
 311                             bool p2p)
 312 {
 313         int ret = 0;
 314         pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type,
 315                  p2p, vif->type, vif->p2p);
 316
 317         if (new_type != vif->type || vif->p2p != p2p) {
 318                 cw1200_remove_interface(dev, vif);
 319                 vif->type = new_type;
 320                 vif->p2p = p2p;
 321                 ret = cw1200_add_interface(dev, vif);
 322         }
 323
 324         return ret;
 325 }
 326
 327 int cw1200_config(struct ieee80211_hw *dev, u32 changed)
 328 {
 329         int ret = 0;
 330         struct cw1200_common *priv = dev->priv;
 331         struct ieee80211_conf *conf = &dev->conf;
 332
 333         pr_debug("CONFIG CHANGED:  %08x\n", changed);
 334
 335         down(&priv->scan.lock);
 336         mutex_lock(&priv->conf_mutex);
 337         /* TODO: IEEE80211_CONF_CHANGE_QOS */
 338         /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */
 339
 340         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 341                 priv->output_power = conf->power_level;
 342                 pr_debug("[STA] TX power: %d\n", priv->output_power);
 343                 wsm_set_output_power(priv, priv->output_power * 10);
 344         }
 345
 346         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) &&
 347             (priv->channel != conf->chandef.chan)) {
 348                 struct ieee80211_channel *ch = conf->chandef.chan;
 349                 struct wsm_switch_channel channel = {
 350                         .channel_number = ch->hw_value,
 351                 };
 352                 pr_debug("[STA] Freq %d (wsm ch: %d).\n",
 353                          ch->center_freq, ch->hw_value);
 354
 355                 /* __cw1200_flush() implicitly locks tx, if successful */
 356                 if (!__cw1200_flush(priv, false)) {
 357                         if (!wsm_switch_channel(priv, &channel)) {
 358                                 ret = wait_event_timeout(priv->channel_switch_done,
 359                                                          !priv->channel_switch_in_progress,
 360                                                          3 * HZ);
 361                                 if (ret) {
 362                                         /* Already unlocks if successful */
 363                                         priv->channel = ch;
 364                                         ret = 0;
 365                                 } else {
 366                                         ret = -ETIMEDOUT;
 367                                 }
 368                         } else {
 369                                 /* Unlock if switch channel fails */
 370                                 wsm_unlock_tx(priv);
 371                         }
 372                 }
 373         }
 374
 375         if (changed & IEEE80211_CONF_CHANGE_PS) {
 376                 if (!(conf->flags & IEEE80211_CONF_PS))
 377                         priv->powersave_mode.mode = WSM_PSM_ACTIVE;
 378                 else if (conf->dynamic_ps_timeout <= 0)
 379                         priv->powersave_mode.mode = WSM_PSM_PS;
 380                 else
 381                         priv->powersave_mode.mode = WSM_PSM_FAST_PS;
 382
 383                 /* Firmware requires that value for this 1-byte field must
 384                  * be specified in units of 500us. Values above the 128ms
 385                  * threshold are not supported.
 386                  */
 387                 if (conf->dynamic_ps_timeout >= 0x80)
 388                         priv->powersave_mode.fast_psm_idle_period = 0xFF;
 389                 else
 390                         priv->powersave_mode.fast_psm_idle_period =
 391                                         conf->dynamic_ps_timeout << 1;
 392
 393                 if (priv->join_status == CW1200_JOIN_STATUS_STA &&
 394                     priv->bss_params.aid)
 395                         cw1200_set_pm(priv, &priv->powersave_mode);
 396         }
 397
 398         if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
 399                 /* TBD: It looks like it's transparent
 400                  * there's a monitor interface present -- use this
 401                  * to determine for example whether to calculate
 402                  * timestamps for packets or not, do not use instead
 403                  * of filter flags!
 404                  */
 405         }
 406
 407         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 408                 struct wsm_operational_mode mode = {
 409                         .power_mode = cw1200_power_mode,
 410                         .disable_more_flag_usage = true,
 411                 };
 412
 413                 wsm_lock_tx(priv);
 414                 /* Disable p2p-dev mode forced by TX request */
 415                 if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) &&
 416                     (conf->flags & IEEE80211_CONF_IDLE) &&
 417                     !priv->listening) {
 418                         cw1200_disable_listening(priv);
 419                         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 420                 }
 421                 wsm_set_operational_mode(priv, &mode);
 422                 wsm_unlock_tx(priv);
 423         }
 424
 425         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 426                 pr_debug("[STA] Retry limits: %d (long), %d (short).\n",
 427                          conf->long_frame_max_tx_count,
 428                          conf->short_frame_max_tx_count);
 429                 spin_lock_bh(&priv->tx_policy_cache.lock);
 430                 priv->long_frame_max_tx_count = conf->long_frame_max_tx_count;
 431                 priv->short_frame_max_tx_count =
 432                         (conf->short_frame_max_tx_count < 0x0F) ?
 433                         conf->short_frame_max_tx_count : 0x0F;
 434                 priv->hw->max_rate_tries = priv->short_frame_max_tx_count;
 435                 spin_unlock_bh(&priv->tx_policy_cache.lock);
 436         }
 437         mutex_unlock(&priv->conf_mutex);
 438         up(&priv->scan.lock);
 439         return ret;
 440 }
 441
 442 void cw1200_update_filtering(struct cw1200_common *priv)
 443 {
 444         int ret;
 445         bool bssid_filtering = !priv->rx_filter.bssid;
 446         bool is_p2p = priv->vif && priv->vif->p2p;
 447         bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type;
 448
 449         static struct wsm_beacon_filter_control bf_ctrl;
 450         static struct wsm_mib_beacon_filter_table bf_tbl = {
 451                 .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC,
 452                 .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 453                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 454                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 455                 .entry[0].oui[0] = 0x50,
 456                 .entry[0].oui[1] = 0x6F,
 457                 .entry[0].oui[2] = 0x9A,
 458                 .entry[1].ie_id = WLAN_EID_HT_OPERATION,
 459                 .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 460                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 461                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 462                 .entry[2].ie_id = WLAN_EID_ERP_INFO,
 463                 .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 464                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 465                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 466         };
 467
 468         if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE)
 469                 return;
 470         else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
 471                 bssid_filtering = false;
 472
 473         if (priv->disable_beacon_filter) {
 474                 bf_ctrl.enabled = 0;
 475                 bf_ctrl.bcn_count = 1;
 476                 bf_tbl.num = __cpu_to_le32(0);
 477         } else if (is_p2p || !is_sta) {
 478                 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE |
 479                         WSM_BEACON_FILTER_AUTO_ERP;
 480                 bf_ctrl.bcn_count = 0;
 481                 bf_tbl.num = __cpu_to_le32(2);
 482         } else {
 483                 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE;
 484                 bf_ctrl.bcn_count = 0;
 485                 bf_tbl.num = __cpu_to_le32(3);
 486         }
 487
 488         /* When acting as p2p client being connected to p2p GO, in order to
 489          * receive frames from a different p2p device, turn off bssid filter.
 490          *
 491          * WARNING: FW dependency!
 492          * This can only be used with FW WSM371 and its successors.
 493          * In that FW version even with bssid filter turned off,
 494          * device will block most of the unwanted frames.
 495          */
 496         if (is_p2p)
 497                 bssid_filtering = false;
 498
 499         ret = wsm_set_rx_filter(priv, &priv->rx_filter);
 500         if (!ret)
 501                 ret = wsm_set_beacon_filter_table(priv, &bf_tbl);
 502         if (!ret)
 503                 ret = wsm_beacon_filter_control(priv, &bf_ctrl);
 504         if (!ret)
 505                 ret = wsm_set_bssid_filtering(priv, bssid_filtering);
 506         if (!ret)
 507                 ret = wsm_set_multicast_filter(priv, &priv->multicast_filter);
 508         if (ret)
 509                 wiphy_err(priv->hw->wiphy,
 510                           "Update filtering failed: %d.\n", ret);
 511         return;
 512 }
 513
 514 void cw1200_update_filtering_work(struct work_struct *work)
 515 {
 516         struct cw1200_common *priv =
 517                 container_of(work, struct cw1200_common,
 518                              update_filtering_work);
 519
 520         cw1200_update_filtering(priv);
 521 }
 522
 523 void cw1200_set_beacon_wakeup_period_work(struct work_struct *work)
 524 {
 525         struct cw1200_common *priv =
 526                 container_of(work, struct cw1200_common,
 527                              set_beacon_wakeup_period_work);
 528
 529         wsm_set_beacon_wakeup_period(priv,
 530                                      priv->beacon_int * priv->join_dtim_period >
 531                                      MAX_BEACON_SKIP_TIME_MS ? 1 :
 532                                      priv->join_dtim_period, 0);
 533 }
 534
 535 u64 cw1200_prepare_multicast(struct ieee80211_hw *hw,
 536                              struct netdev_hw_addr_list *mc_list)
 537 {
 538         static u8 broadcast_ipv6[ETH_ALEN] = {
 539                 0x33, 0x33, 0x00, 0x00, 0x00, 0x01
 540         };
 541         static u8 broadcast_ipv4[ETH_ALEN] = {
 542                 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01
 543         };
 544         struct cw1200_common *priv = hw->priv;
 545         struct netdev_hw_addr *ha;
 546         int count = 0;
 547
 548         /* Disable multicast filtering */
 549         priv->has_multicast_subscription = false;
 550         memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter));
 551
 552         if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES)
 553                 return 0;
 554
 555         /* Enable if requested */
 556         netdev_hw_addr_list_for_each(ha, mc_list) {
 557                 pr_debug("[STA] multicast: %pM\n", ha->addr);
 558                 memcpy(&priv->multicast_filter.macaddrs[count],
 559                        ha->addr, ETH_ALEN);
 560                 if (!ether_addr_equal(ha->addr, broadcast_ipv4) &&
 561                     !ether_addr_equal(ha->addr, broadcast_ipv6))
 562                         priv->has_multicast_subscription = true;
 563                 count++;
 564         }
 565
 566         if (count) {
 567                 priv->multicast_filter.enable = __cpu_to_le32(1);
 568                 priv->multicast_filter.num_addrs = __cpu_to_le32(count);
 569         }
 570
 571         return netdev_hw_addr_list_count(mc_list);
 572 }
 573
 574 void cw1200_configure_filter(struct ieee80211_hw *dev,
 575                              unsigned int changed_flags,
 576                              unsigned int *total_flags,
 577                              u64 multicast)
 578 {
 579         struct cw1200_common *priv = dev->priv;
 580         bool listening = !!(*total_flags &
 581                             (FIF_PROMISC_IN_BSS |
 582                              FIF_OTHER_BSS |
 583                              FIF_BCN_PRBRESP_PROMISC |
 584                              FIF_PROBE_REQ));
 585
 586         *total_flags &= FIF_PROMISC_IN_BSS |
 587                         FIF_OTHER_BSS |
 588                         FIF_FCSFAIL |
 589                         FIF_BCN_PRBRESP_PROMISC |
 590                         FIF_PROBE_REQ;
 591
 592         down(&priv->scan.lock);
 593         mutex_lock(&priv->conf_mutex);
 594
 595         priv->rx_filter.promiscuous = (*total_flags & FIF_PROMISC_IN_BSS)
 596                         ? 1 : 0;
 597         priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS |
 598                         FIF_PROBE_REQ)) ? 1 : 0;
 599         priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0;
 600         priv->disable_beacon_filter = !(*total_flags &
 601                                         (FIF_BCN_PRBRESP_PROMISC |
 602                                          FIF_PROMISC_IN_BSS |
 603                                          FIF_PROBE_REQ));
 604         if (priv->listening != listening) {
 605                 priv->listening = listening;
 606                 wsm_lock_tx(priv);
 607                 cw1200_update_listening(priv, listening);
 608                 wsm_unlock_tx(priv);
 609         }
 610         cw1200_update_filtering(priv);
 611         mutex_unlock(&priv->conf_mutex);
 612         up(&priv->scan.lock);
 613 }
 614
 615 int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
 616                    u16 queue, const struct ieee80211_tx_queue_params *params)
 617 {
 618         struct cw1200_common *priv = dev->priv;
 619         int ret = 0;
 620         /* To prevent re-applying PM request OID again and again*/
 621         bool old_uapsd_flags;
 622
 623         mutex_lock(&priv->conf_mutex);
 624
 625         if (queue < dev->queues) {
 626                 old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags);
 627
 628                 WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0);
 629                 ret = wsm_set_tx_queue_params(priv,
 630                                               &priv->tx_queue_params.params[queue], queue);
 631                 if (ret) {
 632                         ret = -EINVAL;
 633                         goto out;
 634                 }
 635
 636                 WSM_EDCA_SET(&priv->edca, queue, params->aifs,
 637                              params->cw_min, params->cw_max,
 638                              params->txop, 0xc8,
 639                              params->uapsd);
 640                 ret = wsm_set_edca_params(priv, &priv->edca);
 641                 if (ret) {
 642                         ret = -EINVAL;
 643                         goto out;
 644                 }
 645
 646                 if (priv->mode == NL80211_IFTYPE_STATION) {
 647                         ret = cw1200_set_uapsd_param(priv, &priv->edca);
 648                         if (!ret && priv->setbssparams_done &&
 649                             (priv->join_status == CW1200_JOIN_STATUS_STA) &&
 650                             (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags)))
 651                                 ret = cw1200_set_pm(priv, &priv->powersave_mode);
 652                 }
 653         } else {
 654                 ret = -EINVAL;
 655         }
 656
 657 out:
 658         mutex_unlock(&priv->conf_mutex);
 659         return ret;
 660 }
 661
 662 int cw1200_get_stats(struct ieee80211_hw *dev,
 663                      struct ieee80211_low_level_stats *stats)
 664 {
 665         struct cw1200_common *priv = dev->priv;
 666
 667         memcpy(stats, &priv->stats, sizeof(*stats));
 668         return 0;
 669 }
 670
 671 int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
 672 {
 673         struct wsm_set_pm pm = *arg;
 674
 675         if (priv->uapsd_info.uapsd_flags != 0)
 676                 pm.mode &= ~WSM_PSM_FAST_PS_FLAG;
 677
 678         if (memcmp(&pm, &priv->firmware_ps_mode,
 679                    sizeof(struct wsm_set_pm))) {
 680                 priv->firmware_ps_mode = pm;
 681                 return wsm_set_pm(priv, &pm);
 682         } else {
 683                 return 0;
 684         }
 685 }
 686
 687 int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
 688                    struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 689                    struct ieee80211_key_conf *key)
 690 {
 691         int ret = -EOPNOTSUPP;
 692         struct cw1200_common *priv = dev->priv;
 693         struct ieee80211_key_seq seq;
 694
 695         mutex_lock(&priv->conf_mutex);
 696
 697         if (cmd == SET_KEY) {
 698                 u8 *peer_addr = NULL;
 699                 int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ?
 700                         1 : 0;
 701                 int idx = cw1200_alloc_key(priv);
 702                 struct wsm_add_key *wsm_key = &priv->keys[idx];
 703
 704                 if (idx < 0) {
 705                         ret = -EINVAL;
 706                         goto finally;
 707                 }
 708
 709                 if (sta)
 710                         peer_addr = sta->addr;
 711
 712                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE |
 713                               IEEE80211_KEY_FLAG_RESERVE_TAILROOM;
 714
 715                 switch (key->cipher) {
 716                 case WLAN_CIPHER_SUITE_WEP40:
 717                 case WLAN_CIPHER_SUITE_WEP104:
 718                         if (key->keylen > 16) {
 719                                 cw1200_free_key(priv, idx);
 720                                 ret = -EINVAL;
 721                                 goto finally;
 722                         }
 723
 724                         if (pairwise) {
 725                                 wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE;
 726                                 memcpy(wsm_key->wep_pairwise.peer,
 727                                        peer_addr, ETH_ALEN);
 728                                 memcpy(wsm_key->wep_pairwise.keydata,
 729                                        &key->key[0], key->keylen);
 730                                 wsm_key->wep_pairwise.keylen = key->keylen;
 731                         } else {
 732                                 wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT;
 733                                 memcpy(wsm_key->wep_group.keydata,
 734                                        &key->key[0], key->keylen);
 735                                 wsm_key->wep_group.keylen = key->keylen;
 736                                 wsm_key->wep_group.keyid = key->keyidx;
 737                         }
 738                         break;
 739                 case WLAN_CIPHER_SUITE_TKIP:
 740                         ieee80211_get_key_rx_seq(key, 0, &seq);
 741                         if (pairwise) {
 742                                 wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE;
 743                                 memcpy(wsm_key->tkip_pairwise.peer,
 744                                        peer_addr, ETH_ALEN);
 745                                 memcpy(wsm_key->tkip_pairwise.keydata,
 746                                        &key->key[0], 16);
 747                                 memcpy(wsm_key->tkip_pairwise.tx_mic_key,
 748                                        &key->key[16], 8);
 749                                 memcpy(wsm_key->tkip_pairwise.rx_mic_key,
 750                                        &key->key[24], 8);
 751                         } else {
 752                                 size_t mic_offset =
 753                                         (priv->mode == NL80211_IFTYPE_AP) ?
 754                                         16 : 24;
 755                                 wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP;
 756                                 memcpy(wsm_key->tkip_group.keydata,
 757                                        &key->key[0], 16);
 758                                 memcpy(wsm_key->tkip_group.rx_mic_key,
 759                                        &key->key[mic_offset], 8);
 760
 761                                 wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff;
 762                                 wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff;
 763                                 wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff;
 764                                 wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff;
 765                                 wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff;
 766                                 wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff;
 767                                 wsm_key->tkip_group.rx_seqnum[6] = 0;
 768                                 wsm_key->tkip_group.rx_seqnum[7] = 0;
 769
 770                                 wsm_key->tkip_group.keyid = key->keyidx;
 771                         }
 772                         break;
 773                 case WLAN_CIPHER_SUITE_CCMP:
 774                         ieee80211_get_key_rx_seq(key, 0, &seq);
 775                         if (pairwise) {
 776                                 wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE;
 777                                 memcpy(wsm_key->aes_pairwise.peer,
 778                                        peer_addr, ETH_ALEN);
 779                                 memcpy(wsm_key->aes_pairwise.keydata,
 780                                        &key->key[0], 16);
 781                         } else {
 782                                 wsm_key->type = WSM_KEY_TYPE_AES_GROUP;
 783                                 memcpy(wsm_key->aes_group.keydata,
 784                                        &key->key[0], 16);
 785
 786                                 wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5];
 787                                 wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4];
 788                                 wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3];
 789                                 wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2];
 790                                 wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1];
 791                                 wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0];
 792                                 wsm_key->aes_group.rx_seqnum[6] = 0;
 793                                 wsm_key->aes_group.rx_seqnum[7] = 0;
 794                                 wsm_key->aes_group.keyid = key->keyidx;
 795                         }
 796                         break;
 797                 case WLAN_CIPHER_SUITE_SMS4:
 798                         if (pairwise) {
 799                                 wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE;
 800                                 memcpy(wsm_key->wapi_pairwise.peer,
 801                                        peer_addr, ETH_ALEN);
 802                                 memcpy(wsm_key->wapi_pairwise.keydata,
 803                                        &key->key[0], 16);
 804                                 memcpy(wsm_key->wapi_pairwise.mic_key,
 805                                        &key->key[16], 16);
 806                                 wsm_key->wapi_pairwise.keyid = key->keyidx;
 807                         } else {
 808                                 wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP;
 809                                 memcpy(wsm_key->wapi_group.keydata,
 810                                        &key->key[0],  16);
 811                                 memcpy(wsm_key->wapi_group.mic_key,
 812                                        &key->key[16], 16);
 813                                 wsm_key->wapi_group.keyid = key->keyidx;
 814                         }
 815                         break;
 816                 default:
 817                         pr_warn("Unhandled key type %d\n", key->cipher);
 818                         cw1200_free_key(priv, idx);
 819                         ret = -EOPNOTSUPP;
 820                         goto finally;
 821                 }
 822                 ret = wsm_add_key(priv, wsm_key);
 823                 if (!ret)
 824                         key->hw_key_idx = idx;
 825                 else
 826                         cw1200_free_key(priv, idx);
 827         } else if (cmd == DISABLE_KEY) {
 828                 struct wsm_remove_key wsm_key = {
 829                         .index = key->hw_key_idx,
 830                 };
 831
 832                 if (wsm_key.index > WSM_KEY_MAX_INDEX) {
 833                         ret = -EINVAL;
 834                         goto finally;
 835                 }
 836
 837                 cw1200_free_key(priv, wsm_key.index);
 838                 ret = wsm_remove_key(priv, &wsm_key);
 839         } else {
 840                 pr_warn("Unhandled key command %d\n", cmd);
 841         }
 842
 843 finally:
 844         mutex_unlock(&priv->conf_mutex);
 845         return ret;
 846 }
 847
 848 void cw1200_wep_key_work(struct work_struct *work)
 849 {
 850         struct cw1200_common *priv =
 851                 container_of(work, struct cw1200_common, wep_key_work);
 852         u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id);
 853         struct cw1200_queue *queue = &priv->tx_queue[queue_id];
 854         __le32 wep_default_key_id = __cpu_to_le32(
 855                 priv->wep_default_key_id);
 856
 857         pr_debug("[STA] Setting default WEP key: %d\n",
 858                  priv->wep_default_key_id);
 859         wsm_flush_tx(priv);
 860         wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
 861                       &wep_default_key_id, sizeof(wep_default_key_id));
 862         cw1200_queue_requeue(queue, priv->pending_frame_id);
 863         wsm_unlock_tx(priv);
 864 }
 865
 866 int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 867 {
 868         int ret = 0;
 869         __le32 val32;
 870         struct cw1200_common *priv = hw->priv;
 871
 872         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 873                 return 0;
 874
 875         if (value != (u32) -1)
 876                 val32 = __cpu_to_le32(value);
 877         else
 878                 val32 = 0; /* disabled */
 879
 880         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) {
 881                 /* device is down, can _not_ set threshold */
 882                 ret = -ENODEV;
 883                 goto out;
 884         }
 885
 886         if (priv->rts_threshold == value)
 887                 goto out;
 888
 889         pr_debug("[STA] Setting RTS threshold: %d\n",
 890                  priv->rts_threshold);
 891
 892         /* mutex_lock(&priv->conf_mutex); */
 893         ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD,
 894                             &val32, sizeof(val32));
 895         if (!ret)
 896                 priv->rts_threshold = value;
 897         /* mutex_unlock(&priv->conf_mutex); */
 898
 899 out:
 900         return ret;
 901 }
 902
 903 /* If successful, LOCKS the TX queue! */
 904 static int __cw1200_flush(struct cw1200_common *priv, bool drop)
 905 {
 906         int i, ret;
 907
 908         for (;;) {
 909                 /* TODO: correct flush handling is required when dev_stop.
 910                  * Temporary workaround: 2s
 911                  */
 912                 if (drop) {
 913                         for (i = 0; i < 4; ++i)
 914                                 cw1200_queue_clear(&priv->tx_queue[i]);
 915                 } else {
 916                         ret = wait_event_timeout(
 917                                 priv->tx_queue_stats.wait_link_id_empty,
 918                                 cw1200_queue_stats_is_empty(
 919                                         &priv->tx_queue_stats, -1),
 920                                 2 * HZ);
 921                 }
 922
 923                 if (!drop && ret <= 0) {
 924                         ret = -ETIMEDOUT;
 925                         break;
 926                 } else {
 927                         ret = 0;
 928                 }
 929
 930                 wsm_lock_tx(priv);
 931                 if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) {
 932                         /* Highly unlikely: WSM requeued frames. */
 933                         wsm_unlock_tx(priv);
 934                         continue;
 935                 }
 936                 break;
 937         }
 938         return ret;
 939 }
 940
 941 void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 942                   u32 queues, bool drop)
 943 {
 944         struct cw1200_common *priv = hw->priv;
 945
 946         switch (priv->mode) {
 947         case NL80211_IFTYPE_MONITOR:
 948                 drop = true;
 949                 break;
 950         case NL80211_IFTYPE_AP:
 951                 if (!priv->enable_beacon)
 952                         drop = true;
 953                 break;
 954         }
 955
 956         if (!__cw1200_flush(priv, drop))
 957                 wsm_unlock_tx(priv);
 958
 959         return;
 960 }
 961
 962 /* ******************************************************************** */
 963 /* WSM callbacks                                                        */
 964
 965 void cw1200_free_event_queue(struct cw1200_common *priv)
 966 {
 967         LIST_HEAD(list);
 968
 969         spin_lock(&priv->event_queue_lock);
 970         list_splice_init(&priv->event_queue, &list);
 971         spin_unlock(&priv->event_queue_lock);
 972
 973         __cw1200_free_event_queue(&list);
 974 }
 975
 976 void cw1200_event_handler(struct work_struct *work)
 977 {
 978         struct cw1200_common *priv =
 979                 container_of(work, struct cw1200_common, event_handler);
 980         struct cw1200_wsm_event *event;
 981         LIST_HEAD(list);
 982
 983         spin_lock(&priv->event_queue_lock);
 984         list_splice_init(&priv->event_queue, &list);
 985         spin_unlock(&priv->event_queue_lock);
 986
 987         list_for_each_entry(event, &list, link) {
 988                 switch (event->evt.id) {
 989                 case WSM_EVENT_ERROR:
 990                         pr_err("Unhandled WSM Error from LMAC\n");
 991                         break;
 992                 case WSM_EVENT_BSS_LOST:
 993                         pr_debug("[CQM] BSS lost.\n");
 994                         cancel_work_sync(&priv->unjoin_work);
 995                         if (!down_trylock(&priv->scan.lock)) {
 996                                 cw1200_cqm_bssloss_sm(priv, 1, 0, 0);
 997                                 up(&priv->scan.lock);
 998                         } else {
 999                                 /* Scan is in progress. Delay reporting.
1000                                  * Scan complete will trigger bss_loss_work
1001                                  */
1002                                 priv->delayed_link_loss = 1;
1003                                 /* Also start a watchdog. */
1004                                 queue_delayed_work(priv->workqueue,
1005                                                    &priv->bss_loss_work, 5*HZ);
1006                         }
1007                         break;
1008                 case WSM_EVENT_BSS_REGAINED:
1009                         pr_debug("[CQM] BSS regained.\n");
1010                         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1011                         cancel_work_sync(&priv->unjoin_work);
1012                         break;
1013                 case WSM_EVENT_RADAR_DETECTED:
1014                         wiphy_info(priv->hw->wiphy, "radar pulse detected\n");
1015                         break;
1016                 case WSM_EVENT_RCPI_RSSI:
1017                 {
1018                         /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
1019                          * RSSI = RCPI / 2 - 110
1020                          */
1021                         int rcpi_rssi = (int)(event->evt.data & 0xFF);
1022                         int cqm_evt;
1023                         if (priv->cqm_use_rssi)
1024                                 rcpi_rssi = (s8)rcpi_rssi;
1025                         else
1026                                 rcpi_rssi =  rcpi_rssi / 2 - 110;
1027
1028                         cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ?
1029                                 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW :
1030                                 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1031                         pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi);
1032                         ieee80211_cqm_rssi_notify(priv->vif, cqm_evt,
1033                                                   GFP_KERNEL);
1034                         break;
1035                 }
1036                 case WSM_EVENT_BT_INACTIVE:
1037                         pr_warn("Unhandled BT INACTIVE from LMAC\n");
1038                         break;
1039                 case WSM_EVENT_BT_ACTIVE:
1040                         pr_warn("Unhandled BT ACTIVE from LMAC\n");
1041                         break;
1042                 }
1043         }
1044         __cw1200_free_event_queue(&list);
1045 }
1046
1047 void cw1200_bss_loss_work(struct work_struct *work)
1048 {
1049         struct cw1200_common *priv =
1050                 container_of(work, struct cw1200_common, bss_loss_work.work);
1051
1052         pr_debug("[CQM] Reporting connection loss.\n");
1053         wsm_lock_tx(priv);
1054         if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1055                 wsm_unlock_tx(priv);
1056 }
1057
1058 void cw1200_bss_params_work(struct work_struct *work)
1059 {
1060         struct cw1200_common *priv =
1061                 container_of(work, struct cw1200_common, bss_params_work);
1062         mutex_lock(&priv->conf_mutex);
1063
1064         priv->bss_params.reset_beacon_loss = 1;
1065         wsm_set_bss_params(priv, &priv->bss_params);
1066         priv->bss_params.reset_beacon_loss = 0;
1067
1068         mutex_unlock(&priv->conf_mutex);
1069 }
1070
1071 /* ******************************************************************** */
1072 /* Internal API                                                         */
1073
1074 /* This function is called to Parse the SDD file
1075  * to extract listen_interval and PTA related information
1076  * sdd is a TLV: u8 id, u8 len, u8 data[]
1077  */
1078 static int cw1200_parse_sdd_file(struct cw1200_common *priv)
1079 {
1080         const u8 *p = priv->sdd->data;
1081         int ret = 0;
1082
1083         while (p + 2 <= priv->sdd->data + priv->sdd->size) {
1084                 if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) {
1085                         pr_warn("Malformed sdd structure\n");
1086                         return -1;
1087                 }
1088                 switch (p[0]) {
1089                 case SDD_PTA_CFG_ELT_ID: {
1090                         u16 v;
1091                         if (p[1] < 4) {
1092                                 pr_warn("SDD_PTA_CFG_ELT_ID malformed\n");
1093                                 ret = -1;
1094                                 break;
1095                         }
1096                         v = le16_to_cpu(*((__le16 *)(p + 2)));
1097                         if (!v)  /* non-zero means this is enabled */
1098                                 break;
1099
1100                         v = le16_to_cpu(*((__le16 *)(p + 4)));
1101                         priv->conf_listen_interval = (v >> 7) & 0x1F;
1102                         pr_debug("PTA found; Listen Interval %d\n",
1103                                  priv->conf_listen_interval);
1104                         break;
1105                 }
1106                 case SDD_REFERENCE_FREQUENCY_ELT_ID: {
1107                         u16 clk = le16_to_cpu(*((__le16 *)(p + 2)));
1108                         if (clk != priv->hw_refclk)
1109                                 pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n",
1110                                         clk, priv->hw_refclk);
1111                         break;
1112                 }
1113                 default:
1114                         break;
1115                 }
1116                 p += p[1] + 2;
1117         }
1118
1119         if (!priv->bt_present) {
1120                 pr_debug("PTA element NOT found.\n");
1121                 priv->conf_listen_interval = 0;
1122         }
1123         return ret;
1124 }
1125
1126 int cw1200_setup_mac(struct cw1200_common *priv)
1127 {
1128         int ret = 0;
1129
1130         /* NOTE: There is a bug in FW: it reports signal
1131          * as RSSI if RSSI subscription is enabled.
1132          * It's not enough to set WSM_RCPI_RSSI_USE_RSSI.
1133          *
1134          * NOTE2: RSSI based reports have been switched to RCPI, since
1135          * FW has a bug and RSSI reported values are not stable,
1136          * what can leads to signal level oscilations in user-end applications
1137          */
1138         struct wsm_rcpi_rssi_threshold threshold = {
1139                 .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE |
1140                 WSM_RCPI_RSSI_DONT_USE_UPPER |
1141                 WSM_RCPI_RSSI_DONT_USE_LOWER,
1142                 .rollingAverageCount = 16,
1143         };
1144
1145         struct wsm_configuration cfg = {
1146                 .dot11StationId = &priv->mac_addr[0],
1147         };
1148
1149         /* Remember the decission here to make sure, we will handle
1150          * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS
1151          */
1152         if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI)
1153                 priv->cqm_use_rssi = true;
1154
1155         if (!priv->sdd) {
1156                 ret = request_firmware(&priv->sdd, priv->sdd_path, priv->pdev);
1157                 if (ret) {
1158                         pr_err("Can't load sdd file %s.\n", priv->sdd_path);
1159                         return ret;
1160                 }
1161                 cw1200_parse_sdd_file(priv);
1162         }
1163
1164         cfg.dpdData = priv->sdd->data;
1165         cfg.dpdData_size = priv->sdd->size;
1166         ret = wsm_configuration(priv, &cfg);
1167         if (ret)
1168                 return ret;
1169
1170         /* Configure RSSI/SCPI reporting as RSSI. */
1171         wsm_set_rcpi_rssi_threshold(priv, &threshold);
1172
1173         return 0;
1174 }
1175
1176 static void cw1200_join_complete(struct cw1200_common *priv)
1177 {
1178         pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status);
1179
1180         priv->join_pending = false;
1181         if (priv->join_complete_status) {
1182                 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1183                 cw1200_update_listening(priv, priv->listening);
1184                 cw1200_do_unjoin(priv);
1185                 ieee80211_connection_loss(priv->vif);
1186         } else {
1187                 if (priv->mode == NL80211_IFTYPE_ADHOC)
1188                         priv->join_status = CW1200_JOIN_STATUS_IBSS;
1189                 else
1190                         priv->join_status = CW1200_JOIN_STATUS_PRE_STA;
1191         }
1192         wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */
1193 }
1194
1195 void cw1200_join_complete_work(struct work_struct *work)
1196 {
1197         struct cw1200_common *priv =
1198                 container_of(work, struct cw1200_common, join_complete_work);
1199         mutex_lock(&priv->conf_mutex);
1200         cw1200_join_complete(priv);
1201         mutex_unlock(&priv->conf_mutex);
1202 }
1203
1204 void cw1200_join_complete_cb(struct cw1200_common *priv,
1205                              struct wsm_join_complete *arg)
1206 {
1207         pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n",
1208                  arg->status);
1209
1210         if (cancel_delayed_work(&priv->join_timeout)) {
1211                 priv->join_complete_status = arg->status;
1212                 queue_work(priv->workqueue, &priv->join_complete_work);
1213         }
1214 }
1215
1216 /* MUST be called with tx_lock held!  It will be unlocked for us. */
1217 static void cw1200_do_join(struct cw1200_common *priv)
1218 {
1219         const u8 *bssid;
1220         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
1221         struct cfg80211_bss *bss = NULL;
1222         struct wsm_protected_mgmt_policy mgmt_policy;
1223         struct wsm_join join = {
1224                 .mode = conf->ibss_joined ?
1225                                 WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS,
1226                 .preamble_type = WSM_JOIN_PREAMBLE_LONG,
1227                 .probe_for_join = 1,
1228                 .atim_window = 0,
1229                 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
1230                                                           conf->basic_rates),
1231         };
1232         if (delayed_work_pending(&priv->join_timeout)) {
1233                 pr_warn("[STA] - Join request already pending, skipping..\n");
1234                 wsm_unlock_tx(priv);
1235                 return;
1236         }
1237
1238         if (priv->join_status)
1239                 cw1200_do_unjoin(priv);
1240
1241         bssid = priv->vif->bss_conf.bssid;
1242
1243         bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel,
1244                         bssid, NULL, 0, 0, 0);
1245
1246         if (!bss && !conf->ibss_joined) {
1247                 wsm_unlock_tx(priv);
1248                 return;
1249         }
1250
1251         mutex_lock(&priv->conf_mutex);
1252
1253         /* Under the conf lock: check scan status and
1254          * bail out if it is in progress.
1255          */
1256         if (atomic_read(&priv->scan.in_progress)) {
1257                 wsm_unlock_tx(priv);
1258                 goto done_put;
1259         }
1260
1261         priv->join_pending = true;
1262
1263         /* Sanity check basic rates */
1264         if (!join.basic_rate_set)
1265                 join.basic_rate_set = 7;
1266
1267         /* Sanity check beacon interval */
1268         if (!priv->beacon_int)
1269                 priv->beacon_int = 1;
1270
1271         join.beacon_interval = priv->beacon_int;
1272
1273         /* BT Coex related changes */
1274         if (priv->bt_present) {
1275                 if (((priv->conf_listen_interval * 100) %
1276                      priv->beacon_int) == 0)
1277                         priv->listen_interval =
1278                                 ((priv->conf_listen_interval * 100) /
1279                                  priv->beacon_int);
1280                 else
1281                         priv->listen_interval =
1282                                 ((priv->conf_listen_interval * 100) /
1283                                  priv->beacon_int + 1);
1284         }
1285
1286         if (priv->hw->conf.ps_dtim_period)
1287                 priv->join_dtim_period = priv->hw->conf.ps_dtim_period;
1288         join.dtim_period = priv->join_dtim_period;
1289
1290         join.channel_number = priv->channel->hw_value;
1291         join.band = (priv->channel->band == IEEE80211_BAND_5GHZ) ?
1292                 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1293
1294         memcpy(join.bssid, bssid, sizeof(join.bssid));
1295
1296         pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n",
1297                  join.bssid,
1298                  join.dtim_period, priv->beacon_int);
1299
1300         if (!conf->ibss_joined) {
1301                 const u8 *ssidie;
1302                 rcu_read_lock();
1303                 ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1304                 if (ssidie) {
1305                         join.ssid_len = ssidie[1];
1306                         memcpy(join.ssid, &ssidie[2], join.ssid_len);
1307                 }
1308                 rcu_read_unlock();
1309         }
1310
1311         if (priv->vif->p2p) {
1312                 join.flags |= WSM_JOIN_FLAGS_P2P_GO;
1313                 join.basic_rate_set =
1314                         cw1200_rate_mask_to_wsm(priv, 0xFF0);
1315         }
1316
1317         /* Enable asynchronous join calls */
1318         if (!conf->ibss_joined) {
1319                 join.flags |= WSM_JOIN_FLAGS_FORCE;
1320                 join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND;
1321         }
1322
1323         wsm_flush_tx(priv);
1324
1325         /* Stay Awake for Join and Auth Timeouts and a bit more */
1326         cw1200_pm_stay_awake(&priv->pm_state,
1327                              CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT);
1328
1329         cw1200_update_listening(priv, false);
1330
1331         /* Turn on Block ACKs */
1332         wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask,
1333                                  priv->ba_rx_tid_mask);
1334
1335         /* Set up timeout */
1336         if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) {
1337                 priv->join_status = CW1200_JOIN_STATUS_JOINING;
1338                 queue_delayed_work(priv->workqueue,
1339                                    &priv->join_timeout,
1340                                    CW1200_JOIN_TIMEOUT);
1341         }
1342
1343         /* 802.11w protected mgmt frames */
1344         mgmt_policy.protectedMgmtEnable = 0;
1345         mgmt_policy.unprotectedMgmtFramesAllowed = 1;
1346         mgmt_policy.encryptionForAuthFrame = 1;
1347         wsm_set_protected_mgmt_policy(priv, &mgmt_policy);
1348
1349         /* Perform actual join */
1350         if (wsm_join(priv, &join)) {
1351                 pr_err("[STA] cw1200_join_work: wsm_join failed!\n");
1352                 cancel_delayed_work_sync(&priv->join_timeout);
1353                 cw1200_update_listening(priv, priv->listening);
1354                 /* Tx lock still held, unjoin will clear it. */
1355                 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1356                         wsm_unlock_tx(priv);
1357         } else {
1358                 if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND))
1359                         cw1200_join_complete(priv); /* Will clear tx_lock */
1360
1361                 /* Upload keys */
1362                 cw1200_upload_keys(priv);
1363
1364                 /* Due to beacon filtering it is possible that the
1365                  * AP's beacon is not known for the mac80211 stack.
1366                  * Disable filtering temporary to make sure the stack
1367                  * receives at least one
1368                  */
1369                 priv->disable_beacon_filter = true;
1370         }
1371         cw1200_update_filtering(priv);
1372
1373 done_put:
1374         mutex_unlock(&priv->conf_mutex);
1375         if (bss)
1376                 cfg80211_put_bss(priv->hw->wiphy, bss);
1377 }
1378
1379 void cw1200_join_timeout(struct work_struct *work)
1380 {
1381         struct cw1200_common *priv =
1382                 container_of(work, struct cw1200_common, join_timeout.work);
1383         pr_debug("[WSM] Join timed out.\n");
1384         wsm_lock_tx(priv);
1385         if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1386                 wsm_unlock_tx(priv);
1387 }
1388
1389 static void cw1200_do_unjoin(struct cw1200_common *priv)
1390 {
1391         struct wsm_reset reset = {
1392                 .reset_statistics = true,
1393         };
1394
1395         cancel_delayed_work_sync(&priv->join_timeout);
1396
1397         mutex_lock(&priv->conf_mutex);
1398         priv->join_pending = false;
1399
1400         if (atomic_read(&priv->scan.in_progress)) {
1401                 if (priv->delayed_unjoin)
1402                         wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n");
1403                 else
1404                         priv->delayed_unjoin = true;
1405                 goto done;
1406         }
1407
1408         priv->delayed_link_loss = false;
1409
1410         if (!priv->join_status)
1411                 goto done;
1412
1413         if (priv->join_status == CW1200_JOIN_STATUS_AP)
1414                 goto done;
1415
1416         cancel_work_sync(&priv->update_filtering_work);
1417         cancel_work_sync(&priv->set_beacon_wakeup_period_work);
1418         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1419
1420         /* Unjoin is a reset. */
1421         wsm_flush_tx(priv);
1422         wsm_keep_alive_period(priv, 0);
1423         wsm_reset(priv, &reset);
1424         wsm_set_output_power(priv, priv->output_power * 10);
1425         priv->join_dtim_period = 0;
1426         cw1200_setup_mac(priv);
1427         cw1200_free_event_queue(priv);
1428         cancel_work_sync(&priv->event_handler);
1429         cw1200_update_listening(priv, priv->listening);
1430         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1431
1432         /* Disable Block ACKs */
1433         wsm_set_block_ack_policy(priv, 0, 0);
1434
1435         priv->disable_beacon_filter = false;
1436         cw1200_update_filtering(priv);
1437         memset(&priv->association_mode, 0,
1438                sizeof(priv->association_mode));
1439         memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1440         priv->setbssparams_done = false;
1441         memset(&priv->firmware_ps_mode, 0,
1442                sizeof(priv->firmware_ps_mode));
1443
1444         pr_debug("[STA] Unjoin completed.\n");
1445
1446 done:
1447         mutex_unlock(&priv->conf_mutex);
1448 }
1449
1450 void cw1200_unjoin_work(struct work_struct *work)
1451 {
1452         struct cw1200_common *priv =
1453                 container_of(work, struct cw1200_common, unjoin_work);
1454
1455         cw1200_do_unjoin(priv);
1456
1457         /* Tell the stack we're dead */
1458         ieee80211_connection_loss(priv->vif);
1459
1460         wsm_unlock_tx(priv);
1461 }
1462
1463 int cw1200_enable_listening(struct cw1200_common *priv)
1464 {
1465         struct wsm_start start = {
1466                 .mode = WSM_START_MODE_P2P_DEV,
1467                 .band = WSM_PHY_BAND_2_4G,
1468                 .beacon_interval = 100,
1469                 .dtim_period = 1,
1470                 .probe_delay = 0,
1471                 .basic_rate_set = 0x0F,
1472         };
1473
1474         if (priv->channel) {
1475                 start.band = priv->channel->band == IEEE80211_BAND_5GHZ ?
1476                              WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1477                 start.channel_number = priv->channel->hw_value;
1478         } else {
1479                 start.band = WSM_PHY_BAND_2_4G;
1480                 start.channel_number = 1;
1481         }
1482
1483         return wsm_start(priv, &start);
1484 }
1485
1486 int cw1200_disable_listening(struct cw1200_common *priv)
1487 {
1488         int ret;
1489         struct wsm_reset reset = {
1490                 .reset_statistics = true,
1491         };
1492         ret = wsm_reset(priv, &reset);
1493         return ret;
1494 }
1495
1496 void cw1200_update_listening(struct cw1200_common *priv, bool enabled)
1497 {
1498         if (enabled) {
1499                 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) {
1500                         if (!cw1200_enable_listening(priv))
1501                                 priv->join_status = CW1200_JOIN_STATUS_MONITOR;
1502                         wsm_set_probe_responder(priv, true);
1503                 }
1504         } else {
1505                 if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) {
1506                         if (!cw1200_disable_listening(priv))
1507                                 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1508                         wsm_set_probe_responder(priv, false);
1509                 }
1510         }
1511 }
1512
1513 int cw1200_set_uapsd_param(struct cw1200_common *priv,
1514                            const struct wsm_edca_params *arg)
1515 {
1516         int ret;
1517         u16 uapsd_flags = 0;
1518
1519         /* Here's the mapping AC [queue, bit]
1520          *  VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0]
1521          */
1522
1523         if (arg->uapsd_enable[0])
1524                 uapsd_flags |= 1 << 3;
1525
1526         if (arg->uapsd_enable[1])
1527                 uapsd_flags |= 1 << 2;
1528
1529         if (arg->uapsd_enable[2])
1530                 uapsd_flags |= 1 << 1;
1531
1532         if (arg->uapsd_enable[3])
1533                 uapsd_flags |= 1;
1534
1535         /* Currently pseudo U-APSD operation is not supported, so setting
1536          * MinAutoTriggerInterval, MaxAutoTriggerInterval and
1537          * AutoTriggerStep to 0
1538          */
1539
1540         priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags);
1541         priv->uapsd_info.min_auto_trigger_interval = 0;
1542         priv->uapsd_info.max_auto_trigger_interval = 0;
1543         priv->uapsd_info.auto_trigger_step = 0;
1544
1545         ret = wsm_set_uapsd_info(priv, &priv->uapsd_info);
1546         return ret;
1547 }
1548
1549 /* ******************************************************************** */
1550 /* AP API                                                               */
1551
1552 int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1553                    struct ieee80211_sta *sta)
1554 {
1555         struct cw1200_common *priv = hw->priv;
1556         struct cw1200_sta_priv *sta_priv =
1557                         (struct cw1200_sta_priv *)&sta->drv_priv;
1558         struct cw1200_link_entry *entry;
1559         struct sk_buff *skb;
1560
1561         if (priv->mode != NL80211_IFTYPE_AP)
1562                 return 0;
1563
1564         sta_priv->link_id = cw1200_find_link_id(priv, sta->addr);
1565         if (WARN_ON(!sta_priv->link_id)) {
1566                 wiphy_info(priv->hw->wiphy,
1567                            "[AP] No more link IDs available.\n");
1568                 return -ENOENT;
1569         }
1570
1571         entry = &priv->link_id_db[sta_priv->link_id - 1];
1572         spin_lock_bh(&priv->ps_state_lock);
1573         if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) ==
1574                                         IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
1575                 priv->sta_asleep_mask |= BIT(sta_priv->link_id);
1576         entry->status = CW1200_LINK_HARD;
1577         while ((skb = skb_dequeue(&entry->rx_queue)))
1578                 ieee80211_rx_irqsafe(priv->hw, skb);
1579         spin_unlock_bh(&priv->ps_state_lock);
1580         return 0;
1581 }
1582
1583 int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1584                       struct ieee80211_sta *sta)
1585 {
1586         struct cw1200_common *priv = hw->priv;
1587         struct cw1200_sta_priv *sta_priv =
1588                         (struct cw1200_sta_priv *)&sta->drv_priv;
1589         struct cw1200_link_entry *entry;
1590
1591         if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id)
1592                 return 0;
1593
1594         entry = &priv->link_id_db[sta_priv->link_id - 1];
1595         spin_lock_bh(&priv->ps_state_lock);
1596         entry->status = CW1200_LINK_RESERVE;
1597         entry->timestamp = jiffies;
1598         wsm_lock_tx_async(priv);
1599         if (queue_work(priv->workqueue, &priv->link_id_work) <= 0)
1600                 wsm_unlock_tx(priv);
1601         spin_unlock_bh(&priv->ps_state_lock);
1602         flush_workqueue(priv->workqueue);
1603         return 0;
1604 }
1605
1606 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
1607                                 struct ieee80211_vif *vif,
1608                                 enum sta_notify_cmd notify_cmd,
1609                                 int link_id)
1610 {
1611         struct cw1200_common *priv = dev->priv;
1612         u32 bit, prev;
1613
1614         /* Zero link id means "for all link IDs" */
1615         if (link_id)
1616                 bit = BIT(link_id);
1617         else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE))
1618                 bit = 0;
1619         else
1620                 bit = priv->link_id_map;
1621         prev = priv->sta_asleep_mask & bit;
1622
1623         switch (notify_cmd) {
1624         case STA_NOTIFY_SLEEP:
1625                 if (!prev) {
1626                         if (priv->buffered_multicasts &&
1627                             !priv->sta_asleep_mask)
1628                                 queue_work(priv->workqueue,
1629                                            &priv->multicast_start_work);
1630                         priv->sta_asleep_mask |= bit;
1631                 }
1632                 break;
1633         case STA_NOTIFY_AWAKE:
1634                 if (prev) {
1635                         priv->sta_asleep_mask &= ~bit;
1636                         priv->pspoll_mask &= ~bit;
1637                         if (priv->tx_multicast && link_id &&
1638                             !priv->sta_asleep_mask)
1639                                 queue_work(priv->workqueue,
1640                                            &priv->multicast_stop_work);
1641                         cw1200_bh_wakeup(priv);
1642                 }
1643                 break;
1644         }
1645 }
1646
1647 void cw1200_sta_notify(struct ieee80211_hw *dev,
1648                        struct ieee80211_vif *vif,
1649                        enum sta_notify_cmd notify_cmd,
1650                        struct ieee80211_sta *sta)
1651 {
1652         struct cw1200_common *priv = dev->priv;
1653         struct cw1200_sta_priv *sta_priv =
1654                 (struct cw1200_sta_priv *)&sta->drv_priv;
1655
1656         spin_lock_bh(&priv->ps_state_lock);
1657         __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id);
1658         spin_unlock_bh(&priv->ps_state_lock);
1659 }
1660
1661 static void cw1200_ps_notify(struct cw1200_common *priv,
1662                       int link_id, bool ps)
1663 {
1664         if (link_id > CW1200_MAX_STA_IN_AP_MODE)
1665                 return;
1666
1667         pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n",
1668                  ps ? "Stop" : "Start",
1669                  link_id, priv->sta_asleep_mask);
1670
1671         __cw1200_sta_notify(priv->hw, priv->vif,
1672                             ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id);
1673 }
1674
1675 static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set)
1676 {
1677         struct sk_buff *skb;
1678         struct wsm_update_ie update_ie = {
1679                 .what = WSM_UPDATE_IE_BEACON,
1680                 .count = 1,
1681         };
1682         u16 tim_offset, tim_length;
1683
1684         pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis");
1685
1686         skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
1687                         &tim_offset, &tim_length);
1688         if (!skb) {
1689                 if (!__cw1200_flush(priv, true))
1690                         wsm_unlock_tx(priv);
1691                 return -ENOENT;
1692         }
1693
1694         if (tim_offset && tim_length >= 6) {
1695                 /* Ignore DTIM count from mac80211:
1696                  * firmware handles DTIM internally.
1697                  */
1698                 skb->data[tim_offset + 2] = 0;
1699
1700                 /* Set/reset aid0 bit */
1701                 if (aid0_bit_set)
1702                         skb->data[tim_offset + 4] |= 1;
1703                 else
1704                         skb->data[tim_offset + 4] &= ~1;
1705         }
1706
1707         update_ie.ies = &skb->data[tim_offset];
1708         update_ie.length = tim_length;
1709         wsm_update_ie(priv, &update_ie);
1710
1711         dev_kfree_skb(skb);
1712
1713         return 0;
1714 }
1715
1716 void cw1200_set_tim_work(struct work_struct *work)
1717 {
1718         struct cw1200_common *priv =
1719                 container_of(work, struct cw1200_common, set_tim_work);
1720         (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set);
1721 }
1722
1723 int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1724                    bool set)
1725 {
1726         struct cw1200_common *priv = dev->priv;
1727         queue_work(priv->workqueue, &priv->set_tim_work);
1728         return 0;
1729 }
1730
1731 void cw1200_set_cts_work(struct work_struct *work)
1732 {
1733         struct cw1200_common *priv =
1734                 container_of(work, struct cw1200_common, set_cts_work);
1735
1736         u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0};
1737         struct wsm_update_ie update_ie = {
1738                 .what = WSM_UPDATE_IE_BEACON,
1739                 .count = 1,
1740                 .ies = erp_ie,
1741                 .length = 3,
1742         };
1743         u32 erp_info;
1744         __le32 use_cts_prot;
1745         mutex_lock(&priv->conf_mutex);
1746         erp_info = priv->erp_info;
1747         mutex_unlock(&priv->conf_mutex);
1748         use_cts_prot =
1749                 erp_info & WLAN_ERP_USE_PROTECTION ?
1750                 __cpu_to_le32(1) : 0;
1751
1752         erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info;
1753
1754         pr_debug("[STA] ERP information 0x%x\n", erp_info);
1755
1756         wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION,
1757                       &use_cts_prot, sizeof(use_cts_prot));
1758         wsm_update_ie(priv, &update_ie);
1759
1760         return;
1761 }
1762
1763 static int cw1200_set_btcoexinfo(struct cw1200_common *priv)
1764 {
1765         struct wsm_override_internal_txrate arg;
1766         int ret = 0;
1767
1768         if (priv->mode == NL80211_IFTYPE_STATION) {
1769                 /* Plumb PSPOLL and NULL template */
1770                 cw1200_upload_pspoll(priv);
1771                 cw1200_upload_null(priv);
1772                 cw1200_upload_qosnull(priv);
1773         } else {
1774                 return 0;
1775         }
1776
1777         memset(&arg, 0, sizeof(struct wsm_override_internal_txrate));
1778
1779         if (!priv->vif->p2p) {
1780                 /* STATION mode */
1781                 if (priv->bss_params.operational_rate_set & ~0xF) {
1782                         pr_debug("[STA] STA has ERP rates\n");
1783                         /* G or BG mode */
1784                         arg.internalTxRate = (__ffs(
1785                         priv->bss_params.operational_rate_set & ~0xF));
1786                 } else {
1787                         pr_debug("[STA] STA has non ERP rates\n");
1788                         /* B only mode */
1789                         arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1790                 }
1791                 arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1792         } else {
1793                 /* P2P mode */
1794                 arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1795                 arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1796         }
1797
1798         pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n",
1799                  priv->mode,
1800                  arg.internalTxRate,
1801                  arg.nonErpInternalTxRate);
1802
1803         ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE,
1804                             &arg, sizeof(arg));
1805
1806         return ret;
1807 }
1808
1809 void cw1200_bss_info_changed(struct ieee80211_hw *dev,
1810                              struct ieee80211_vif *vif,
1811                              struct ieee80211_bss_conf *info,
1812                              u32 changed)
1813 {
1814         struct cw1200_common *priv = dev->priv;
1815         bool do_join = false;
1816
1817         mutex_lock(&priv->conf_mutex);
1818
1819         pr_debug("BSS CHANGED:  %08x\n", changed);
1820
1821         /* TODO: BSS_CHANGED_QOS */
1822         /* TODO: BSS_CHANGED_TXPOWER */
1823
1824         if (changed & BSS_CHANGED_ARP_FILTER) {
1825                 struct wsm_mib_arp_ipv4_filter filter = {0};
1826                 int i;
1827
1828                 pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n",
1829                          info->arp_addr_cnt);
1830
1831                 /* Currently only one IP address is supported by firmware.
1832                  * In case of more IPs arp filtering will be disabled.
1833                  */
1834                 if (info->arp_addr_cnt > 0 &&
1835                     info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) {
1836                         for (i = 0; i < info->arp_addr_cnt; i++) {
1837                                 filter.ipv4addrs[i] = info->arp_addr_list[i];
1838                                 pr_debug("[STA] addr[%d]: 0x%X\n",
1839                                          i, filter.ipv4addrs[i]);
1840                         }
1841                         filter.enable = __cpu_to_le32(1);
1842                 }
1843
1844                 pr_debug("[STA] arp ip filter enable: %d\n",
1845                          __le32_to_cpu(filter.enable));
1846
1847                 wsm_set_arp_ipv4_filter(priv, &filter);
1848         }
1849
1850         if (changed &
1851             (BSS_CHANGED_BEACON |
1852              BSS_CHANGED_AP_PROBE_RESP |
1853              BSS_CHANGED_BSSID |
1854              BSS_CHANGED_SSID |
1855              BSS_CHANGED_IBSS)) {
1856                 pr_debug("BSS_CHANGED_BEACON\n");
1857                 priv->beacon_int = info->beacon_int;
1858                 cw1200_update_beaconing(priv);
1859                 cw1200_upload_beacon(priv);
1860         }
1861
1862         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1863                 pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon);
1864
1865                 if (priv->enable_beacon != info->enable_beacon) {
1866                         cw1200_enable_beaconing(priv, info->enable_beacon);
1867                         priv->enable_beacon = info->enable_beacon;
1868                 }
1869         }
1870
1871         if (changed & BSS_CHANGED_BEACON_INT) {
1872                 pr_debug("CHANGED_BEACON_INT\n");
1873                 if (info->ibss_joined)
1874                         do_join = true;
1875                 else if (priv->join_status == CW1200_JOIN_STATUS_AP)
1876                         cw1200_update_beaconing(priv);
1877         }
1878
1879         /* assoc/disassoc, or maybe AID changed */
1880         if (changed & BSS_CHANGED_ASSOC) {
1881                 wsm_lock_tx(priv);
1882                 priv->wep_default_key_id = -1;
1883                 wsm_unlock_tx(priv);
1884         }
1885
1886         if (changed & BSS_CHANGED_BSSID) {
1887                 pr_debug("BSS_CHANGED_BSSID\n");
1888                 do_join = true;
1889         }
1890
1891         if (changed &
1892             (BSS_CHANGED_ASSOC |
1893              BSS_CHANGED_BSSID |
1894              BSS_CHANGED_IBSS |
1895              BSS_CHANGED_BASIC_RATES |
1896              BSS_CHANGED_HT)) {
1897                 pr_debug("BSS_CHANGED_ASSOC\n");
1898                 if (info->assoc) {
1899                         if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) {
1900                                 ieee80211_connection_loss(vif);
1901                                 mutex_unlock(&priv->conf_mutex);
1902                                 return;
1903                         } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) {
1904                                 priv->join_status = CW1200_JOIN_STATUS_STA;
1905                         }
1906                 } else {
1907                         do_join = true;
1908                 }
1909
1910                 if (info->assoc || info->ibss_joined) {
1911                         struct ieee80211_sta *sta = NULL;
1912                         __le32 htprot = 0;
1913
1914                         if (info->dtim_period)
1915                                 priv->join_dtim_period = info->dtim_period;
1916                         priv->beacon_int = info->beacon_int;
1917
1918                         rcu_read_lock();
1919
1920                         if (info->bssid && !info->ibss_joined)
1921                                 sta = ieee80211_find_sta(vif, info->bssid);
1922                         if (sta) {
1923                                 priv->ht_info.ht_cap = sta->ht_cap;
1924                                 priv->bss_params.operational_rate_set =
1925                                         cw1200_rate_mask_to_wsm(priv,
1926                                                                 sta->supp_rates[priv->channel->band]);
1927                                 priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef);
1928                                 priv->ht_info.operation_mode = info->ht_operation_mode;
1929                         } else {
1930                                 memset(&priv->ht_info, 0,
1931                                        sizeof(priv->ht_info));
1932                                 priv->bss_params.operational_rate_set = -1;
1933                         }
1934                         rcu_read_unlock();
1935
1936                         /* Non Greenfield stations present */
1937                         if (priv->ht_info.operation_mode &
1938                             IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)
1939                                 htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT);
1940
1941                         /* Set HT protection method */
1942                         htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2);
1943
1944                         /* TODO:
1945                          * STBC_param.dual_cts
1946                          *  STBC_param.LSIG_TXOP_FILL
1947                          */
1948
1949                         wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION,
1950                                       &htprot, sizeof(htprot));
1951
1952                         priv->association_mode.greenfield =
1953                                 cw1200_ht_greenfield(&priv->ht_info);
1954                         priv->association_mode.flags =
1955                                 WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES |
1956                                 WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE |
1957                                 WSM_ASSOCIATION_MODE_USE_HT_MODE |
1958                                 WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET |
1959                                 WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING;
1960                         priv->association_mode.preamble =
1961                                 info->use_short_preamble ?
1962                                 WSM_JOIN_PREAMBLE_SHORT :
1963                                 WSM_JOIN_PREAMBLE_LONG;
1964                         priv->association_mode.basic_rate_set = __cpu_to_le32(
1965                                 cw1200_rate_mask_to_wsm(priv,
1966                                                         info->basic_rates));
1967                         priv->association_mode.mpdu_start_spacing =
1968                                 cw1200_ht_ampdu_density(&priv->ht_info);
1969
1970                         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1971                         cancel_work_sync(&priv->unjoin_work);
1972
1973                         priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count;
1974                         priv->bss_params.aid = info->aid;
1975
1976                         if (priv->join_dtim_period < 1)
1977                                 priv->join_dtim_period = 1;
1978
1979                         pr_debug("[STA] DTIM %d, interval: %d\n",
1980                                  priv->join_dtim_period, priv->beacon_int);
1981                         pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n",
1982                                  priv->association_mode.preamble,
1983                                  priv->association_mode.greenfield,
1984                                  priv->bss_params.aid,
1985                                  priv->bss_params.operational_rate_set,
1986                                  priv->association_mode.basic_rate_set);
1987                         wsm_set_association_mode(priv, &priv->association_mode);
1988
1989                         if (!info->ibss_joined) {
1990                                 wsm_keep_alive_period(priv, 30 /* sec */);
1991                                 wsm_set_bss_params(priv, &priv->bss_params);
1992                                 priv->setbssparams_done = true;
1993                                 cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work);
1994                                 cw1200_set_pm(priv, &priv->powersave_mode);
1995                         }
1996                         if (priv->vif->p2p) {
1997                                 pr_debug("[STA] Setting p2p powersave configuration.\n");
1998                                 wsm_set_p2p_ps_modeinfo(priv,
1999                                                         &priv->p2p_ps_modeinfo);
2000                         }
2001                         if (priv->bt_present)
2002                                 cw1200_set_btcoexinfo(priv);
2003                 } else {
2004                         memset(&priv->association_mode, 0,
2005                                sizeof(priv->association_mode));
2006                         memset(&priv->bss_params, 0, sizeof(priv->bss_params));
2007                 }
2008         }
2009
2010         /* ERP Protection */
2011         if (changed & (BSS_CHANGED_ASSOC |
2012                        BSS_CHANGED_ERP_CTS_PROT |
2013                        BSS_CHANGED_ERP_PREAMBLE)) {
2014                 u32 prev_erp_info = priv->erp_info;
2015                 if (info->use_cts_prot)
2016                         priv->erp_info |= WLAN_ERP_USE_PROTECTION;
2017                 else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT))
2018                         priv->erp_info &= ~WLAN_ERP_USE_PROTECTION;
2019
2020                 if (info->use_short_preamble)
2021                         priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE;
2022                 else
2023                         priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE;
2024
2025                 pr_debug("[STA] ERP Protection: %x\n", priv->erp_info);
2026
2027                 if (prev_erp_info != priv->erp_info)
2028                         queue_work(priv->workqueue, &priv->set_cts_work);
2029         }
2030
2031         /* ERP Slottime */
2032         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) {
2033                 __le32 slot_time = info->use_short_slot ?
2034                         __cpu_to_le32(9) : __cpu_to_le32(20);
2035                 pr_debug("[STA] Slot time: %d us.\n",
2036                          __le32_to_cpu(slot_time));
2037                 wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME,
2038                               &slot_time, sizeof(slot_time));
2039         }
2040
2041         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) {
2042                 struct wsm_rcpi_rssi_threshold threshold = {
2043                         .rollingAverageCount = 8,
2044                 };
2045                 pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n",
2046                          info->cqm_rssi_thold, info->cqm_rssi_hyst);
2047                 priv->cqm_rssi_thold = info->cqm_rssi_thold;
2048                 priv->cqm_rssi_hyst = info->cqm_rssi_hyst;
2049
2050                 if (info->cqm_rssi_thold || info->cqm_rssi_hyst) {
2051                         /* RSSI subscription enabled */
2052                         /* TODO: It's not a correct way of setting threshold.
2053                          * Upper and lower must be set equal here and adjusted
2054                          * in callback. However current implementation is much
2055                          * more relaible and stable.
2056                          */
2057
2058                         /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
2059                          * RSSI = RCPI / 2 - 110
2060                          */
2061                         if (priv->cqm_use_rssi) {
2062                                 threshold.upperThreshold =
2063                                         info->cqm_rssi_thold + info->cqm_rssi_hyst;
2064                                 threshold.lowerThreshold =
2065                                         info->cqm_rssi_thold;
2066                                 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2067                         } else {
2068                                 threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2;
2069                                 threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2;
2070                         }
2071                         threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE;
2072                 } else {
2073                         /* There is a bug in FW, see sta.c. We have to enable
2074                          * dummy subscription to get correct RSSI values.
2075                          */
2076                         threshold.rssiRcpiMode |=
2077                                 WSM_RCPI_RSSI_THRESHOLD_ENABLE |
2078                                 WSM_RCPI_RSSI_DONT_USE_UPPER |
2079                                 WSM_RCPI_RSSI_DONT_USE_LOWER;
2080                         if (priv->cqm_use_rssi)
2081                                 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2082                 }
2083                 wsm_set_rcpi_rssi_threshold(priv, &threshold);
2084         }
2085         mutex_unlock(&priv->conf_mutex);
2086
2087         if (do_join) {
2088                 wsm_lock_tx(priv);
2089                 cw1200_do_join(priv); /* Will unlock it for us */
2090         }
2091 }
2092
2093 void cw1200_multicast_start_work(struct work_struct *work)
2094 {
2095         struct cw1200_common *priv =
2096                 container_of(work, struct cw1200_common, multicast_start_work);
2097         long tmo = priv->join_dtim_period *
2098                         (priv->beacon_int + 20) * HZ / 1024;
2099
2100         cancel_work_sync(&priv->multicast_stop_work);
2101
2102         if (!priv->aid0_bit_set) {
2103                 wsm_lock_tx(priv);
2104                 cw1200_set_tim_impl(priv, true);
2105                 priv->aid0_bit_set = true;
2106                 mod_timer(&priv->mcast_timeout, jiffies + tmo);
2107                 wsm_unlock_tx(priv);
2108         }
2109 }
2110
2111 void cw1200_multicast_stop_work(struct work_struct *work)
2112 {
2113         struct cw1200_common *priv =
2114                 container_of(work, struct cw1200_common, multicast_stop_work);
2115
2116         if (priv->aid0_bit_set) {
2117                 del_timer_sync(&priv->mcast_timeout);
2118                 wsm_lock_tx(priv);
2119                 priv->aid0_bit_set = false;
2120                 cw1200_set_tim_impl(priv, false);
2121                 wsm_unlock_tx(priv);
2122         }
2123 }
2124
2125 void cw1200_mcast_timeout(unsigned long arg)
2126 {
2127         struct cw1200_common *priv =
2128                 (struct cw1200_common *)arg;
2129
2130         wiphy_warn(priv->hw->wiphy,
2131                    "Multicast delivery timeout.\n");
2132         spin_lock_bh(&priv->ps_state_lock);
2133         priv->tx_multicast = priv->aid0_bit_set &&
2134                         priv->buffered_multicasts;
2135         if (priv->tx_multicast)
2136                 cw1200_bh_wakeup(priv);
2137         spin_unlock_bh(&priv->ps_state_lock);
2138 }
2139
2140 int cw1200_ampdu_action(struct ieee80211_hw *hw,
2141                         struct ieee80211_vif *vif,
2142                         enum ieee80211_ampdu_mlme_action action,
2143                         struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2144                         u8 buf_size)
2145 {
2146         /* Aggregation is implemented fully in firmware,
2147          * including block ack negotiation. Do not allow
2148          * mac80211 stack to do anything: it interferes with
2149          * the firmware.
2150          */
2151
2152         /* Note that we still need this function stubbed. */
2153         return -ENOTSUPP;
2154 }
2155
2156 /* ******************************************************************** */
2157 /* WSM callback                                                         */
2158 void cw1200_suspend_resume(struct cw1200_common *priv,
2159                           struct wsm_suspend_resume *arg)
2160 {
2161         pr_debug("[AP] %s: %s\n",
2162                  arg->stop ? "stop" : "start",
2163                  arg->multicast ? "broadcast" : "unicast");
2164
2165         if (arg->multicast) {
2166                 bool cancel_tmo = false;
2167                 spin_lock_bh(&priv->ps_state_lock);
2168                 if (arg->stop) {
2169                         priv->tx_multicast = false;
2170                 } else {
2171                         /* Firmware sends this indication every DTIM if there
2172                          * is a STA in powersave connected. There is no reason
2173                          * to suspend, following wakeup will consume much more
2174                          * power than it could be saved.
2175                          */
2176                         cw1200_pm_stay_awake(&priv->pm_state,
2177                                              priv->join_dtim_period *
2178                                              (priv->beacon_int + 20) * HZ / 1024);
2179                         priv->tx_multicast = (priv->aid0_bit_set &&
2180                                               priv->buffered_multicasts);
2181                         if (priv->tx_multicast) {
2182                                 cancel_tmo = true;
2183                                 cw1200_bh_wakeup(priv);
2184                         }
2185                 }
2186                 spin_unlock_bh(&priv->ps_state_lock);
2187                 if (cancel_tmo)
2188                         del_timer_sync(&priv->mcast_timeout);
2189         } else {
2190                 spin_lock_bh(&priv->ps_state_lock);
2191                 cw1200_ps_notify(priv, arg->link_id, arg->stop);
2192                 spin_unlock_bh(&priv->ps_state_lock);
2193                 if (!arg->stop)
2194                         cw1200_bh_wakeup(priv);
2195         }
2196         return;
2197 }
2198
2199 /* ******************************************************************** */
2200 /* AP privates                                                          */
2201
2202 static int cw1200_upload_beacon(struct cw1200_common *priv)
2203 {
2204         int ret = 0;
2205         struct ieee80211_mgmt *mgmt;
2206         struct wsm_template_frame frame = {
2207                 .frame_type = WSM_FRAME_TYPE_BEACON,
2208         };
2209
2210         u16 tim_offset;
2211         u16 tim_len;
2212
2213         if (priv->mode == NL80211_IFTYPE_STATION ||
2214             priv->mode == NL80211_IFTYPE_MONITOR ||
2215             priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2216                 goto done;
2217
2218         if (priv->vif->p2p)
2219                 frame.rate = WSM_TRANSMIT_RATE_6;
2220
2221         frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
2222                                              &tim_offset, &tim_len);
2223         if (!frame.skb)
2224                 return -ENOMEM;
2225
2226         ret = wsm_set_template_frame(priv, &frame);
2227
2228         if (ret)
2229                 goto done;
2230
2231         /* TODO: Distill probe resp; remove TIM
2232          * and any other beacon-specific IEs
2233          */
2234         mgmt = (void *)frame.skb->data;
2235         mgmt->frame_control =
2236                 __cpu_to_le16(IEEE80211_FTYPE_MGMT |
2237                               IEEE80211_STYPE_PROBE_RESP);
2238
2239         frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE;
2240         if (priv->vif->p2p) {
2241                 ret = wsm_set_probe_responder(priv, true);
2242         } else {
2243                 ret = wsm_set_template_frame(priv, &frame);
2244                 wsm_set_probe_responder(priv, false);
2245         }
2246
2247 done:
2248         dev_kfree_skb(frame.skb);
2249
2250         return ret;
2251 }
2252
2253 static int cw1200_upload_pspoll(struct cw1200_common *priv)
2254 {
2255         int ret = 0;
2256         struct wsm_template_frame frame = {
2257                 .frame_type = WSM_FRAME_TYPE_PS_POLL,
2258                 .rate = 0xFF,
2259         };
2260
2261
2262         frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif);
2263         if (!frame.skb)
2264                 return -ENOMEM;
2265
2266         ret = wsm_set_template_frame(priv, &frame);
2267
2268         dev_kfree_skb(frame.skb);
2269
2270         return ret;
2271 }
2272
2273 static int cw1200_upload_null(struct cw1200_common *priv)
2274 {
2275         int ret = 0;
2276         struct wsm_template_frame frame = {
2277                 .frame_type = WSM_FRAME_TYPE_NULL,
2278                 .rate = 0xFF,
2279         };
2280
2281         frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
2282         if (!frame.skb)
2283                 return -ENOMEM;
2284
2285         ret = wsm_set_template_frame(priv, &frame);
2286
2287         dev_kfree_skb(frame.skb);
2288
2289         return ret;
2290 }
2291
2292 static int cw1200_upload_qosnull(struct cw1200_common *priv)
2293 {
2294         /* TODO:  This needs to be implemented
2295
2296         struct wsm_template_frame frame = {
2297                 .frame_type = WSM_FRAME_TYPE_QOS_NULL,
2298                 .rate = 0xFF,
2299         };
2300
2301         frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif);
2302         if (!frame.skb)
2303                 return -ENOMEM;
2304
2305         ret = wsm_set_template_frame(priv, &frame);
2306
2307         dev_kfree_skb(frame.skb);
2308
2309         */
2310         return 0;
2311 }
2312
2313 static int cw1200_enable_beaconing(struct cw1200_common *priv,
2314                                    bool enable)
2315 {
2316         struct wsm_beacon_transmit transmit = {
2317                 .enable_beaconing = enable,
2318         };
2319
2320         return wsm_beacon_transmit(priv, &transmit);
2321 }
2322
2323 static int cw1200_start_ap(struct cw1200_common *priv)
2324 {
2325         int ret;
2326         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2327         struct wsm_start start = {
2328                 .mode = priv->vif->p2p ?
2329                                 WSM_START_MODE_P2P_GO : WSM_START_MODE_AP,
2330                 .band = (priv->channel->band == IEEE80211_BAND_5GHZ) ?
2331                                 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G,
2332                 .channel_number = priv->channel->hw_value,
2333                 .beacon_interval = conf->beacon_int,
2334                 .dtim_period = conf->dtim_period,
2335                 .preamble = conf->use_short_preamble ?
2336                                 WSM_JOIN_PREAMBLE_SHORT :
2337                                 WSM_JOIN_PREAMBLE_LONG,
2338                 .probe_delay = 100,
2339                 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
2340                                 conf->basic_rates),
2341         };
2342         struct wsm_operational_mode mode = {
2343                 .power_mode = cw1200_power_mode,
2344                 .disable_more_flag_usage = true,
2345         };
2346
2347         memset(start.ssid, 0, sizeof(start.ssid));
2348         if (!conf->hidden_ssid) {
2349                 start.ssid_len = conf->ssid_len;
2350                 memcpy(start.ssid, conf->ssid, start.ssid_len);
2351         }
2352
2353         priv->beacon_int = conf->beacon_int;
2354         priv->join_dtim_period = conf->dtim_period;
2355
2356         memset(&priv->link_id_db, 0, sizeof(priv->link_id_db));
2357
2358         pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n",
2359                  start.channel_number, start.band,
2360                  start.beacon_interval, start.dtim_period,
2361                  start.basic_rate_set,
2362                  start.ssid_len, start.ssid);
2363         ret = wsm_start(priv, &start);
2364         if (!ret)
2365                 ret = cw1200_upload_keys(priv);
2366         if (!ret && priv->vif->p2p) {
2367                 pr_debug("[AP] Setting p2p powersave configuration.\n");
2368                 wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo);
2369         }
2370         if (!ret) {
2371                 wsm_set_block_ack_policy(priv, 0, 0);
2372                 priv->join_status = CW1200_JOIN_STATUS_AP;
2373                 cw1200_update_filtering(priv);
2374         }
2375         wsm_set_operational_mode(priv, &mode);
2376         return ret;
2377 }
2378
2379 static int cw1200_update_beaconing(struct cw1200_common *priv)
2380 {
2381         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2382         struct wsm_reset reset = {
2383                 .link_id = 0,
2384                 .reset_statistics = true,
2385         };
2386
2387         if (priv->mode == NL80211_IFTYPE_AP) {
2388                 /* TODO: check if changed channel, band */
2389                 if (priv->join_status != CW1200_JOIN_STATUS_AP ||
2390                     priv->beacon_int != conf->beacon_int) {
2391                         pr_debug("ap restarting\n");
2392                         wsm_lock_tx(priv);
2393                         if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE)
2394                                 wsm_reset(priv, &reset);
2395                         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
2396                         cw1200_start_ap(priv);
2397                         wsm_unlock_tx(priv);
2398                 } else
2399                         pr_debug("ap started join_status: %d\n",
2400                                  priv->join_status);
2401         }
2402         return 0;
2403 }