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