drivers/net/wireless/cw1200/sta.c

   1 /*
   2  * Mac80211 STA API for ST-Ericsson CW1200 drivers
   3  *
   4  * Copyright (c) 2010, ST-Ericsson
   5  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/vmalloc.h>
  13 #include <linux/sched.h>
  14 #include <linux/firmware.h>
  15 #include <linux/module.h>
  16 #include <linux/etherdevice.h>
  17
  18 #include "cw1200.h"
  19 #include "sta.h"
  20 #include "fwio.h"
  21 #include "bh.h"
  22 #include "debug.h"
  23
  24 #ifndef ERP_INFO_BYTE_OFFSET
  25 #define ERP_INFO_BYTE_OFFSET 2
  26 #endif
  27
  28 static void cw1200_do_join(struct cw1200_common *priv);
  29 static void cw1200_do_unjoin(struct cw1200_common *priv);
  30
  31 static int cw1200_upload_beacon(struct cw1200_common *priv);
  32 static int cw1200_upload_pspoll(struct cw1200_common *priv);
  33 static int cw1200_upload_null(struct cw1200_common *priv);
  34 static int cw1200_upload_qosnull(struct cw1200_common *priv);
  35 static int cw1200_start_ap(struct cw1200_common *priv);
  36 static int cw1200_update_beaconing(struct cw1200_common *priv);
  37 static int cw1200_enable_beaconing(struct cw1200_common *priv,
  38                                    bool enable);
  39 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
  40                                 struct ieee80211_vif *vif,
  41                                 enum sta_notify_cmd notify_cmd,
  42                                 int link_id);
  43 static int __cw1200_flush(struct cw1200_common *priv, bool drop);
  44
  45 static inline void __cw1200_free_event_queue(struct list_head *list)
  46 {
  47         struct cw1200_wsm_event *event, *tmp;
  48         list_for_each_entry_safe(event, tmp, list, link) {
  49                 list_del(&event->link);
  50                 kfree(event);
  51         }
  52 }
  53
  54 /* ******************************************************************** */
  55 /* STA API                                                              */
  56
  57 int cw1200_start(struct ieee80211_hw *dev)
  58 {
  59         struct cw1200_common *priv = dev->priv;
  60         int ret = 0;
  61
  62         cw1200_pm_stay_awake(&priv->pm_state, HZ);
  63
  64         mutex_lock(&priv->conf_mutex);
  65
  66         /* default EDCA */
  67         WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false);
  68         WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false);
  69         WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false);
  70         WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false);
  71         ret = wsm_set_edca_params(priv, &priv->edca);
  72         if (ret)
  73                 goto out;
  74
  75         ret = cw1200_set_uapsd_param(priv, &priv->edca);
  76         if (ret)
  77                 goto out;
  78
  79         priv->setbssparams_done = false;
  80
  81         memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN);
  82         priv->mode = NL80211_IFTYPE_MONITOR;
  83         priv->wep_default_key_id = -1;
  84
  85         priv->cqm_beacon_loss_count = 10;
  86
  87         ret = cw1200_setup_mac(priv);
  88         if (ret)
  89                 goto out;
  90
  91 out:
  92         mutex_unlock(&priv->conf_mutex);
  93         return ret;
  94 }
  95
  96 void cw1200_stop(struct ieee80211_hw *dev)
  97 {
  98         struct cw1200_common *priv = dev->priv;
  99         LIST_HEAD(list);
 100         int i;
 101
 102         wsm_lock_tx(priv);
 103
 104         while (down_trylock(&priv->scan.lock)) {
 105                 /* Scan is in progress. Force it to stop. */
 106                 priv->scan.req = NULL;
 107                 schedule();
 108         }
 109         up(&priv->scan.lock);
 110
 111         cancel_delayed_work_sync(&priv->scan.probe_work);
 112         cancel_delayed_work_sync(&priv->scan.timeout);
 113         cancel_delayed_work_sync(&priv->clear_recent_scan_work);
 114         cancel_delayed_work_sync(&priv->join_timeout);
 115         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
 116         cancel_work_sync(&priv->unjoin_work);
 117         cancel_delayed_work_sync(&priv->link_id_gc_work);
 118         flush_workqueue(priv->workqueue);
 119         del_timer_sync(&priv->mcast_timeout);
 120         mutex_lock(&priv->conf_mutex);
 121         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
 122         priv->listening = false;
 123
 124         spin_lock(&priv->event_queue_lock);
 125         list_splice_init(&priv->event_queue, &list);
 126         spin_unlock(&priv->event_queue_lock);
 127         __cw1200_free_event_queue(&list);
 128
 129
 130         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 131         priv->join_pending = false;
 132
 133         for (i = 0; i < 4; i++)
 134                 cw1200_queue_clear(&priv->tx_queue[i]);
 135         mutex_unlock(&priv->conf_mutex);
 136         tx_policy_clean(priv);
 137
 138         /* HACK! */
 139         if (atomic_xchg(&priv->tx_lock, 1) != 1)
 140                 pr_debug("[STA] TX is force-unlocked due to stop request.\n");
 141
 142         wsm_unlock_tx(priv);
 143         atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */
 144 }
 145
 146 static int cw1200_bssloss_mitigation = 1;
 147 module_param(cw1200_bssloss_mitigation, int, 0644);
 148 MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)");
 149
 150
 151 void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
 152                              int init, int good, int bad)
 153 {
 154         int tx = 0;
 155
 156         priv->delayed_link_loss = 0;
 157         cancel_work_sync(&priv->bss_params_work);
 158
 159         pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n",
 160                  priv->bss_loss_state,
 161                  init, good, bad,
 162                  atomic_read(&priv->tx_lock),
 163                  priv->delayed_unjoin);
 164
 165         /* If we have a pending unjoin */
 166         if (priv->delayed_unjoin)
 167                 return;
 168
 169         if (init) {
 170                 queue_delayed_work(priv->workqueue,
 171                                    &priv->bss_loss_work,
 172                                    HZ);
 173                 priv->bss_loss_state = 0;
 174
 175                 /* Skip the confimration procedure in P2P case */
 176                 if (!priv->vif->p2p && !atomic_read(&priv->tx_lock))
 177                         tx = 1;
 178         } else if (good) {
 179                 cancel_delayed_work_sync(&priv->bss_loss_work);
 180                 priv->bss_loss_state = 0;
 181                 queue_work(priv->workqueue, &priv->bss_params_work);
 182         } else if (bad) {
 183                 /* XXX Should we just keep going until we time out? */
 184                 if (priv->bss_loss_state < 3)
 185                         tx = 1;
 186         } else {
 187                 cancel_delayed_work_sync(&priv->bss_loss_work);
 188                 priv->bss_loss_state = 0;
 189         }
 190
 191         /* Bypass mitigation if it's disabled */
 192         if (!cw1200_bssloss_mitigation)
 193                 tx = 0;
 194
 195         /* Spit out a NULL packet to our AP if necessary */
 196         if (tx) {
 197                 struct sk_buff *skb;
 198
 199                 priv->bss_loss_state++;
 200
 201                 skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
 202                 WARN_ON(!skb);
 203                 if (skb)
 204                         cw1200_tx(priv->hw, NULL, skb);
 205         }
 206 }
 207
 208 int cw1200_add_interface(struct ieee80211_hw *dev,
 209                          struct ieee80211_vif *vif)
 210 {
 211         int ret;
 212         struct cw1200_common *priv = dev->priv;
 213         /* __le32 auto_calibration_mode = __cpu_to_le32(1); */
 214
 215         vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 216                              IEEE80211_VIF_SUPPORTS_UAPSD |
 217                              IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 218
 219         mutex_lock(&priv->conf_mutex);
 220
 221         if (priv->mode != NL80211_IFTYPE_MONITOR) {
 222                 mutex_unlock(&priv->conf_mutex);
 223                 return -EOPNOTSUPP;
 224         }
 225
 226         switch (vif->type) {
 227         case NL80211_IFTYPE_STATION:
 228         case NL80211_IFTYPE_ADHOC:
 229         case NL80211_IFTYPE_MESH_POINT:
 230         case NL80211_IFTYPE_AP:
 231                 priv->mode = vif->type;
 232                 break;
 233         default:
 234                 mutex_unlock(&priv->conf_mutex);
 235                 return -EOPNOTSUPP;
 236         }
 237
 238         priv->vif = vif;
 239         memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
 240         ret = cw1200_setup_mac(priv);
 241         /* Enable auto-calibration */
 242         /* Exception in subsequent channel switch; disabled.
 243          *  wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE,
 244          *      &auto_calibration_mode, sizeof(auto_calibration_mode));
 245         */
 246
 247         mutex_unlock(&priv->conf_mutex);
 248         return ret;
 249 }
 250
 251 void cw1200_remove_interface(struct ieee80211_hw *dev,
 252                              struct ieee80211_vif *vif)
 253 {
 254         struct cw1200_common *priv = dev->priv;
 255         struct wsm_reset reset = {
 256                 .reset_statistics = true,
 257         };
 258         int i;
 259
 260         mutex_lock(&priv->conf_mutex);
 261         switch (priv->join_status) {
 262         case CW1200_JOIN_STATUS_JOINING:
 263         case CW1200_JOIN_STATUS_PRE_STA:
 264         case CW1200_JOIN_STATUS_STA:
 265         case CW1200_JOIN_STATUS_IBSS:
 266                 wsm_lock_tx(priv);
 267                 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
 268                         wsm_unlock_tx(priv);
 269                 break;
 270         case CW1200_JOIN_STATUS_AP:
 271                 for (i = 0; priv->link_id_map; ++i) {
 272                         if (priv->link_id_map & BIT(i)) {
 273                                 reset.link_id = i;
 274                                 wsm_reset(priv, &reset);
 275                                 priv->link_id_map &= ~BIT(i);
 276                         }
 277                 }
 278                 memset(priv->link_id_db, 0, sizeof(priv->link_id_db));
 279                 priv->sta_asleep_mask = 0;
 280                 priv->enable_beacon = false;
 281                 priv->tx_multicast = false;
 282                 priv->aid0_bit_set = false;
 283                 priv->buffered_multicasts = false;
 284                 priv->pspoll_mask = 0;
 285                 reset.link_id = 0;
 286                 wsm_reset(priv, &reset);
 287                 break;
 288         case CW1200_JOIN_STATUS_MONITOR:
 289                 cw1200_update_listening(priv, false);
 290                 break;
 291         default:
 292                 break;
 293         }
 294         priv->vif = NULL;
 295         priv->mode = NL80211_IFTYPE_MONITOR;
 296         eth_zero_addr(priv->mac_addr);
 297         memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo));
 298         cw1200_free_keys(priv);
 299         cw1200_setup_mac(priv);
 300         priv->listening = false;
 301         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 302         if (!__cw1200_flush(priv, true))
 303                 wsm_unlock_tx(priv);
 304
 305         mutex_unlock(&priv->conf_mutex);
 306 }
 307
 308 int cw1200_change_interface(struct ieee80211_hw *dev,
 309                             struct ieee80211_vif *vif,
 310                             enum nl80211_iftype new_type,
 311                             bool p2p)
 312 {
 313         int ret = 0;
 314         pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type,
 315                  p2p, vif->type, vif->p2p);
 316
 317         if (new_type != vif->type || vif->p2p != p2p) {
 318                 cw1200_remove_interface(dev, vif);
 319                 vif->type = new_type;
 320                 vif->p2p = p2p;
 321                 ret = cw1200_add_interface(dev, vif);
 322         }
 323
 324         return ret;
 325 }
 326
 327 int cw1200_config(struct ieee80211_hw *dev, u32 changed)
 328 {
 329         int ret = 0;
 330         struct cw1200_common *priv = dev->priv;
 331         struct ieee80211_conf *conf = &dev->conf;
 332
 333         pr_debug("CONFIG CHANGED:  %08x\n", changed);
 334
 335         down(&priv->scan.lock);
 336         mutex_lock(&priv->conf_mutex);
 337         /* TODO: IEEE80211_CONF_CHANGE_QOS */
 338         /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */
 339
 340         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 341                 priv->output_power = conf->power_level;
 342                 pr_debug("[STA] TX power: %d\n", priv->output_power);
 343                 wsm_set_output_power(priv, priv->output_power * 10);
 344         }
 345
 346         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) &&
 347             (priv->channel != conf->chandef.chan)) {
 348                 struct ieee80211_channel *ch = conf->chandef.chan;
 349                 struct wsm_switch_channel channel = {
 350                         .channel_number = ch->hw_value,
 351                 };
 352                 pr_debug("[STA] Freq %d (wsm ch: %d).\n",
 353                          ch->center_freq, ch->hw_value);
 354
 355                 /* __cw1200_flush() implicitly locks tx, if successful */
 356                 if (!__cw1200_flush(priv, false)) {
 357                         if (!wsm_switch_channel(priv, &channel)) {
 358                                 ret = wait_event_timeout(priv->channel_switch_done,
 359                                                          !priv->channel_switch_in_progress,
 360                                                          3 * HZ);
 361                                 if (ret) {
 362                                         /* Already unlocks if successful */
 363                                         priv->channel = ch;
 364                                         ret = 0;
 365                                 } else {
 366                                         ret = -ETIMEDOUT;
 367                                 }
 368                         } else {
 369                                 /* Unlock if switch channel fails */
 370                                 wsm_unlock_tx(priv);
 371                         }
 372                 }
 373         }
 374
 375         if (changed & IEEE80211_CONF_CHANGE_PS) {
 376                 if (!(conf->flags & IEEE80211_CONF_PS))
 377                         priv->powersave_mode.mode = WSM_PSM_ACTIVE;
 378                 else if (conf->dynamic_ps_timeout <= 0)
 379                         priv->powersave_mode.mode = WSM_PSM_PS;
 380                 else
 381                         priv->powersave_mode.mode = WSM_PSM_FAST_PS;
 382
 383                 /* Firmware requires that value for this 1-byte field must
 384                  * be specified in units of 500us. Values above the 128ms
 385                  * threshold are not supported.
 386                  */
 387                 if (conf->dynamic_ps_timeout >= 0x80)
 388                         priv->powersave_mode.fast_psm_idle_period = 0xFF;
 389                 else
 390                         priv->powersave_mode.fast_psm_idle_period =
 391                                         conf->dynamic_ps_timeout << 1;
 392
 393                 if (priv->join_status == CW1200_JOIN_STATUS_STA &&
 394                     priv->bss_params.aid)
 395                         cw1200_set_pm(priv, &priv->powersave_mode);
 396         }
 397
 398         if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
 399                 /* TBD: It looks like it's transparent
 400                  * there's a monitor interface present -- use this
 401                  * to determine for example whether to calculate
 402                  * timestamps for packets or not, do not use instead
 403                  * of filter flags!
 404                  */
 405         }
 406
 407         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 408                 struct wsm_operational_mode mode = {
 409                         .power_mode = cw1200_power_mode,
 410                         .disable_more_flag_usage = true,
 411                 };
 412
 413                 wsm_lock_tx(priv);
 414                 /* Disable p2p-dev mode forced by TX request */
 415                 if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) &&
 416                     (conf->flags & IEEE80211_CONF_IDLE) &&
 417                     !priv->listening) {
 418                         cw1200_disable_listening(priv);
 419                         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 420                 }
 421                 wsm_set_operational_mode(priv, &mode);
 422                 wsm_unlock_tx(priv);
 423         }
 424
 425         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 426                 pr_debug("[STA] Retry limits: %d (long), %d (short).\n",
 427                          conf->long_frame_max_tx_count,
 428                          conf->short_frame_max_tx_count);
 429                 spin_lock_bh(&priv->tx_policy_cache.lock);
 430                 priv->long_frame_max_tx_count = conf->long_frame_max_tx_count;
 431                 priv->short_frame_max_tx_count =
 432                         (conf->short_frame_max_tx_count < 0x0F) ?
 433                         conf->short_frame_max_tx_count : 0x0F;
 434                 priv->hw->max_rate_tries = priv->short_frame_max_tx_count;
 435                 spin_unlock_bh(&priv->tx_policy_cache.lock);
 436         }
 437         mutex_unlock(&priv->conf_mutex);
 438         up(&priv->scan.lock);
 439         return ret;
 440 }
 441
 442 void cw1200_update_filtering(struct cw1200_common *priv)
 443 {
 444         int ret;
 445         bool bssid_filtering = !priv->rx_filter.bssid;
 446         bool is_p2p = priv->vif && priv->vif->p2p;
 447         bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type;
 448
 449         static struct wsm_beacon_filter_control bf_ctrl;
 450         static struct wsm_mib_beacon_filter_table bf_tbl = {
 451                 .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC,
 452                 .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 453                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 454                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 455                 .entry[0].oui[0] = 0x50,
 456                 .entry[0].oui[1] = 0x6F,
 457                 .entry[0].oui[2] = 0x9A,
 458                 .entry[1].ie_id = WLAN_EID_HT_OPERATION,
 459                 .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 460                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 461                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 462                 .entry[2].ie_id = WLAN_EID_ERP_INFO,
 463                 .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 464                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 465                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 466         };
 467
 468         if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE)
 469                 return;
 470         else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
 471                 bssid_filtering = false;
 472
 473         if (priv->disable_beacon_filter) {
 474                 bf_ctrl.enabled = 0;
 475                 bf_ctrl.bcn_count = 1;
 476                 bf_tbl.num = __cpu_to_le32(0);
 477         } else if (is_p2p || !is_sta) {
 478                 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE |
 479                         WSM_BEACON_FILTER_AUTO_ERP;
 480                 bf_ctrl.bcn_count = 0;
 481                 bf_tbl.num = __cpu_to_le32(2);
 482         } else {
 483                 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE;
 484                 bf_ctrl.bcn_count = 0;
 485                 bf_tbl.num = __cpu_to_le32(3);
 486         }
 487
 488         /* When acting as p2p client being connected to p2p GO, in order to
 489          * receive frames from a different p2p device, turn off bssid filter.
 490          *
 491          * WARNING: FW dependency!
 492          * This can only be used with FW WSM371 and its successors.
 493          * In that FW version even with bssid filter turned off,
 494          * device will block most of the unwanted frames.
 495          */
 496         if (is_p2p)
 497                 bssid_filtering = false;
 498
 499         ret = wsm_set_rx_filter(priv, &priv->rx_filter);
 500         if (!ret)
 501                 ret = wsm_set_beacon_filter_table(priv, &bf_tbl);
 502         if (!ret)
 503                 ret = wsm_beacon_filter_control(priv, &bf_ctrl);
 504         if (!ret)
 505                 ret = wsm_set_bssid_filtering(priv, bssid_filtering);
 506         if (!ret)
 507                 ret = wsm_set_multicast_filter(priv, &priv->multicast_filter);
 508         if (ret)
 509                 wiphy_err(priv->hw->wiphy,
 510                           "Update filtering failed: %d.\n", ret);
 511         return;
 512 }
 513
 514 void cw1200_update_filtering_work(struct work_struct *work)
 515 {
 516         struct cw1200_common *priv =
 517                 container_of(work, struct cw1200_common,
 518                              update_filtering_work);
 519
 520         cw1200_update_filtering(priv);
 521 }
 522
 523 void cw1200_set_beacon_wakeup_period_work(struct work_struct *work)
 524 {
 525         struct cw1200_common *priv =
 526                 container_of(work, struct cw1200_common,
 527                              set_beacon_wakeup_period_work);
 528
 529         wsm_set_beacon_wakeup_period(priv,
 530                                      priv->beacon_int * priv->join_dtim_period >
 531                                      MAX_BEACON_SKIP_TIME_MS ? 1 :
 532                                      priv->join_dtim_period, 0);
 533 }
 534
 535 u64 cw1200_prepare_multicast(struct ieee80211_hw *hw,
 536                              struct netdev_hw_addr_list *mc_list)
 537 {
 538         static u8 broadcast_ipv6[ETH_ALEN] = {
 539                 0x33, 0x33, 0x00, 0x00, 0x00, 0x01
 540         };
 541         static u8 broadcast_ipv4[ETH_ALEN] = {
 542                 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01
 543         };
 544         struct cw1200_common *priv = hw->priv;
 545         struct netdev_hw_addr *ha;
 546         int count = 0;
 547
 548         /* Disable multicast filtering */
 549         priv->has_multicast_subscription = false;
 550         memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter));
 551
 552         if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES)
 553                 return 0;
 554
 555         /* Enable if requested */
 556         netdev_hw_addr_list_for_each(ha, mc_list) {
 557                 pr_debug("[STA] multicast: %pM\n", ha->addr);
 558                 memcpy(&priv->multicast_filter.macaddrs[count],
 559                        ha->addr, ETH_ALEN);
 560                 if (!ether_addr_equal(ha->addr, broadcast_ipv4) &&
 561                     !ether_addr_equal(ha->addr, broadcast_ipv6))
 562                         priv->has_multicast_subscription = true;
 563                 count++;
 564         }
 565
 566         if (count) {
 567                 priv->multicast_filter.enable = __cpu_to_le32(1);
 568                 priv->multicast_filter.num_addrs = __cpu_to_le32(count);
 569         }
 570
 571         return netdev_hw_addr_list_count(mc_list);
 572 }
 573
 574 void cw1200_configure_filter(struct ieee80211_hw *dev,
 575                              unsigned int changed_flags,
 576                              unsigned int *total_flags,
 577                              u64 multicast)
 578 {
 579         struct cw1200_common *priv = dev->priv;
 580         bool listening = !!(*total_flags &
 581                             (FIF_OTHER_BSS |
 582                              FIF_BCN_PRBRESP_PROMISC |
 583                              FIF_PROBE_REQ));
 584
 585         *total_flags &= 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 = 0;
 594         priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS |
 595                         FIF_PROBE_REQ)) ? 1 : 0;
 596         priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0;
 597         priv->disable_beacon_filter = !(*total_flags &
 598                                         (FIF_BCN_PRBRESP_PROMISC |
 599                                          FIF_PROBE_REQ));
 600         if (priv->listening != listening) {
 601                 priv->listening = listening;
 602                 wsm_lock_tx(priv);
 603                 cw1200_update_listening(priv, listening);
 604                 wsm_unlock_tx(priv);
 605         }
 606         cw1200_update_filtering(priv);
 607         mutex_unlock(&priv->conf_mutex);
 608         up(&priv->scan.lock);
 609 }
 610
 611 int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
 612                    u16 queue, const struct ieee80211_tx_queue_params *params)
 613 {
 614         struct cw1200_common *priv = dev->priv;
 615         int ret = 0;
 616         /* To prevent re-applying PM request OID again and again*/
 617         bool old_uapsd_flags;
 618
 619         mutex_lock(&priv->conf_mutex);
 620
 621         if (queue < dev->queues) {
 622                 old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags);
 623
 624                 WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0);
 625                 ret = wsm_set_tx_queue_params(priv,
 626                                               &priv->tx_queue_params.params[queue], queue);
 627                 if (ret) {
 628                         ret = -EINVAL;
 629                         goto out;
 630                 }
 631
 632                 WSM_EDCA_SET(&priv->edca, queue, params->aifs,
 633                              params->cw_min, params->cw_max,
 634                              params->txop, 0xc8,
 635                              params->uapsd);
 636                 ret = wsm_set_edca_params(priv, &priv->edca);
 637                 if (ret) {
 638                         ret = -EINVAL;
 639                         goto out;
 640                 }
 641
 642                 if (priv->mode == NL80211_IFTYPE_STATION) {
 643                         ret = cw1200_set_uapsd_param(priv, &priv->edca);
 644                         if (!ret && priv->setbssparams_done &&
 645                             (priv->join_status == CW1200_JOIN_STATUS_STA) &&
 646                             (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags)))
 647                                 ret = cw1200_set_pm(priv, &priv->powersave_mode);
 648                 }
 649         } else {
 650                 ret = -EINVAL;
 651         }
 652
 653 out:
 654         mutex_unlock(&priv->conf_mutex);
 655         return ret;
 656 }
 657
 658 int cw1200_get_stats(struct ieee80211_hw *dev,
 659                      struct ieee80211_low_level_stats *stats)
 660 {
 661         struct cw1200_common *priv = dev->priv;
 662
 663         memcpy(stats, &priv->stats, sizeof(*stats));
 664         return 0;
 665 }
 666
 667 int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
 668 {
 669         struct wsm_set_pm pm = *arg;
 670
 671         if (priv->uapsd_info.uapsd_flags != 0)
 672                 pm.mode &= ~WSM_PSM_FAST_PS_FLAG;
 673
 674         if (memcmp(&pm, &priv->firmware_ps_mode,
 675                    sizeof(struct wsm_set_pm))) {
 676                 priv->firmware_ps_mode = pm;
 677                 return wsm_set_pm(priv, &pm);
 678         } else {
 679                 return 0;
 680         }
 681 }
 682
 683 int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
 684                    struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 685                    struct ieee80211_key_conf *key)
 686 {
 687         int ret = -EOPNOTSUPP;
 688         struct cw1200_common *priv = dev->priv;
 689         struct ieee80211_key_seq seq;
 690
 691         mutex_lock(&priv->conf_mutex);
 692
 693         if (cmd == SET_KEY) {
 694                 u8 *peer_addr = NULL;
 695                 int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ?
 696                         1 : 0;
 697                 int idx = cw1200_alloc_key(priv);
 698                 struct wsm_add_key *wsm_key = &priv->keys[idx];
 699
 700                 if (idx < 0) {
 701                         ret = -EINVAL;
 702                         goto finally;
 703                 }
 704
 705                 if (sta)
 706                         peer_addr = sta->addr;
 707
 708                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE |
 709                               IEEE80211_KEY_FLAG_RESERVE_TAILROOM;
 710
 711                 switch (key->cipher) {
 712                 case WLAN_CIPHER_SUITE_WEP40:
 713                 case WLAN_CIPHER_SUITE_WEP104:
 714                         if (key->keylen > 16) {
 715                                 cw1200_free_key(priv, idx);
 716                                 ret = -EINVAL;
 717                                 goto finally;
 718                         }
 719
 720                         if (pairwise) {
 721                                 wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE;
 722                                 memcpy(wsm_key->wep_pairwise.peer,
 723                                        peer_addr, ETH_ALEN);
 724                                 memcpy(wsm_key->wep_pairwise.keydata,
 725                                        &key->key[0], key->keylen);
 726                                 wsm_key->wep_pairwise.keylen = key->keylen;
 727                         } else {
 728                                 wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT;
 729                                 memcpy(wsm_key->wep_group.keydata,
 730                                        &key->key[0], key->keylen);
 731                                 wsm_key->wep_group.keylen = key->keylen;
 732                                 wsm_key->wep_group.keyid = key->keyidx;
 733                         }
 734                         break;
 735                 case WLAN_CIPHER_SUITE_TKIP:
 736                         ieee80211_get_key_rx_seq(key, 0, &seq);
 737                         if (pairwise) {
 738                                 wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE;
 739                                 memcpy(wsm_key->tkip_pairwise.peer,
 740                                        peer_addr, ETH_ALEN);
 741                                 memcpy(wsm_key->tkip_pairwise.keydata,
 742                                        &key->key[0], 16);
 743                                 memcpy(wsm_key->tkip_pairwise.tx_mic_key,
 744                                        &key->key[16], 8);
 745                                 memcpy(wsm_key->tkip_pairwise.rx_mic_key,
 746                                        &key->key[24], 8);
 747                         } else {
 748                                 size_t mic_offset =
 749                                         (priv->mode == NL80211_IFTYPE_AP) ?
 750                                         16 : 24;
 751                                 wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP;
 752                                 memcpy(wsm_key->tkip_group.keydata,
 753                                        &key->key[0], 16);
 754                                 memcpy(wsm_key->tkip_group.rx_mic_key,
 755                                        &key->key[mic_offset], 8);
 756
 757                                 wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff;
 758                                 wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff;
 759                                 wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff;
 760                                 wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff;
 761                                 wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff;
 762                                 wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff;
 763                                 wsm_key->tkip_group.rx_seqnum[6] = 0;
 764                                 wsm_key->tkip_group.rx_seqnum[7] = 0;
 765
 766                                 wsm_key->tkip_group.keyid = key->keyidx;
 767                         }
 768                         break;
 769                 case WLAN_CIPHER_SUITE_CCMP:
 770                         ieee80211_get_key_rx_seq(key, 0, &seq);
 771                         if (pairwise) {
 772                                 wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE;
 773                                 memcpy(wsm_key->aes_pairwise.peer,
 774                                        peer_addr, ETH_ALEN);
 775                                 memcpy(wsm_key->aes_pairwise.keydata,
 776                                        &key->key[0], 16);
 777                         } else {
 778                                 wsm_key->type = WSM_KEY_TYPE_AES_GROUP;
 779                                 memcpy(wsm_key->aes_group.keydata,
 780                                        &key->key[0], 16);
 781
 782                                 wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5];
 783                                 wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4];
 784                                 wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3];
 785                                 wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2];
 786                                 wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1];
 787                                 wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0];
 788                                 wsm_key->aes_group.rx_seqnum[6] = 0;
 789                                 wsm_key->aes_group.rx_seqnum[7] = 0;
 790                                 wsm_key->aes_group.keyid = key->keyidx;
 791                         }
 792                         break;
 793                 case WLAN_CIPHER_SUITE_SMS4:
 794                         if (pairwise) {
 795                                 wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE;
 796                                 memcpy(wsm_key->wapi_pairwise.peer,
 797                                        peer_addr, ETH_ALEN);
 798                                 memcpy(wsm_key->wapi_pairwise.keydata,
 799                                        &key->key[0], 16);
 800                                 memcpy(wsm_key->wapi_pairwise.mic_key,
 801                                        &key->key[16], 16);
 802                                 wsm_key->wapi_pairwise.keyid = key->keyidx;
 803                         } else {
 804                                 wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP;
 805                                 memcpy(wsm_key->wapi_group.keydata,
 806                                        &key->key[0],  16);
 807                                 memcpy(wsm_key->wapi_group.mic_key,
 808                                        &key->key[16], 16);
 809                                 wsm_key->wapi_group.keyid = key->keyidx;
 810                         }
 811                         break;
 812                 default:
 813                         pr_warn("Unhandled key type %d\n", key->cipher);
 814                         cw1200_free_key(priv, idx);
 815                         ret = -EOPNOTSUPP;
 816                         goto finally;
 817                 }
 818                 ret = wsm_add_key(priv, wsm_key);
 819                 if (!ret)
 820                         key->hw_key_idx = idx;
 821                 else
 822                         cw1200_free_key(priv, idx);
 823         } else if (cmd == DISABLE_KEY) {
 824                 struct wsm_remove_key wsm_key = {
 825                         .index = key->hw_key_idx,
 826                 };
 827
 828                 if (wsm_key.index > WSM_KEY_MAX_INDEX) {
 829                         ret = -EINVAL;
 830                         goto finally;
 831                 }
 832
 833                 cw1200_free_key(priv, wsm_key.index);
 834                 ret = wsm_remove_key(priv, &wsm_key);
 835         } else {
 836                 pr_warn("Unhandled key command %d\n", cmd);
 837         }
 838
 839 finally:
 840         mutex_unlock(&priv->conf_mutex);
 841         return ret;
 842 }
 843
 844 void cw1200_wep_key_work(struct work_struct *work)
 845 {
 846         struct cw1200_common *priv =
 847                 container_of(work, struct cw1200_common, wep_key_work);
 848         u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id);
 849         struct cw1200_queue *queue = &priv->tx_queue[queue_id];
 850         __le32 wep_default_key_id = __cpu_to_le32(
 851                 priv->wep_default_key_id);
 852
 853         pr_debug("[STA] Setting default WEP key: %d\n",
 854                  priv->wep_default_key_id);
 855         wsm_flush_tx(priv);
 856         wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
 857                       &wep_default_key_id, sizeof(wep_default_key_id));
 858         cw1200_queue_requeue(queue, priv->pending_frame_id);
 859         wsm_unlock_tx(priv);
 860 }
 861
 862 int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 863 {
 864         int ret = 0;
 865         __le32 val32;
 866         struct cw1200_common *priv = hw->priv;
 867
 868         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 869                 return 0;
 870
 871         if (value != (u32) -1)
 872                 val32 = __cpu_to_le32(value);
 873         else
 874                 val32 = 0; /* disabled */
 875
 876         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) {
 877                 /* device is down, can _not_ set threshold */
 878                 ret = -ENODEV;
 879                 goto out;
 880         }
 881
 882         if (priv->rts_threshold == value)
 883                 goto out;
 884
 885         pr_debug("[STA] Setting RTS threshold: %d\n",
 886                  priv->rts_threshold);
 887
 888         /* mutex_lock(&priv->conf_mutex); */
 889         ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD,
 890                             &val32, sizeof(val32));
 891         if (!ret)
 892                 priv->rts_threshold = value;
 893         /* mutex_unlock(&priv->conf_mutex); */
 894
 895 out:
 896         return ret;
 897 }
 898
 899 /* If successful, LOCKS the TX queue! */
 900 static int __cw1200_flush(struct cw1200_common *priv, bool drop)
 901 {
 902         int i, ret;
 903
 904         for (;;) {
 905                 /* TODO: correct flush handling is required when dev_stop.
 906                  * Temporary workaround: 2s
 907                  */
 908                 if (drop) {
 909                         for (i = 0; i < 4; ++i)
 910                                 cw1200_queue_clear(&priv->tx_queue[i]);
 911                 } else {
 912                         ret = wait_event_timeout(
 913                                 priv->tx_queue_stats.wait_link_id_empty,
 914                                 cw1200_queue_stats_is_empty(
 915                                         &priv->tx_queue_stats, -1),
 916                                 2 * HZ);
 917                 }
 918
 919                 if (!drop && ret <= 0) {
 920                         ret = -ETIMEDOUT;
 921                         break;
 922                 } else {
 923                         ret = 0;
 924                 }
 925
 926                 wsm_lock_tx(priv);
 927                 if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) {
 928                         /* Highly unlikely: WSM requeued frames. */
 929                         wsm_unlock_tx(priv);
 930                         continue;
 931                 }
 932                 break;
 933         }
 934         return ret;
 935 }
 936
 937 void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 938                   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, bssid, NULL, 0,
1240                                IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
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_AP)
1410                 goto done;
1411
1412         cancel_work_sync(&priv->update_filtering_work);
1413         cancel_work_sync(&priv->set_beacon_wakeup_period_work);
1414         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1415
1416         /* Unjoin is a reset. */
1417         wsm_flush_tx(priv);
1418         wsm_keep_alive_period(priv, 0);
1419         wsm_reset(priv, &reset);
1420         wsm_set_output_power(priv, priv->output_power * 10);
1421         priv->join_dtim_period = 0;
1422         cw1200_setup_mac(priv);
1423         cw1200_free_event_queue(priv);
1424         cancel_work_sync(&priv->event_handler);
1425         cw1200_update_listening(priv, priv->listening);
1426         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1427
1428         /* Disable Block ACKs */
1429         wsm_set_block_ack_policy(priv, 0, 0);
1430
1431         priv->disable_beacon_filter = false;
1432         cw1200_update_filtering(priv);
1433         memset(&priv->association_mode, 0,
1434                sizeof(priv->association_mode));
1435         memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1436         priv->setbssparams_done = false;
1437         memset(&priv->firmware_ps_mode, 0,
1438                sizeof(priv->firmware_ps_mode));
1439
1440         pr_debug("[STA] Unjoin completed.\n");
1441
1442 done:
1443         mutex_unlock(&priv->conf_mutex);
1444 }
1445
1446 void cw1200_unjoin_work(struct work_struct *work)
1447 {
1448         struct cw1200_common *priv =
1449                 container_of(work, struct cw1200_common, unjoin_work);
1450
1451         cw1200_do_unjoin(priv);
1452
1453         /* Tell the stack we're dead */
1454         ieee80211_connection_loss(priv->vif);
1455
1456         wsm_unlock_tx(priv);
1457 }
1458
1459 int cw1200_enable_listening(struct cw1200_common *priv)
1460 {
1461         struct wsm_start start = {
1462                 .mode = WSM_START_MODE_P2P_DEV,
1463                 .band = WSM_PHY_BAND_2_4G,
1464                 .beacon_interval = 100,
1465                 .dtim_period = 1,
1466                 .probe_delay = 0,
1467                 .basic_rate_set = 0x0F,
1468         };
1469
1470         if (priv->channel) {
1471                 start.band = priv->channel->band == IEEE80211_BAND_5GHZ ?
1472                              WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1473                 start.channel_number = priv->channel->hw_value;
1474         } else {
1475                 start.band = WSM_PHY_BAND_2_4G;
1476                 start.channel_number = 1;
1477         }
1478
1479         return wsm_start(priv, &start);
1480 }
1481
1482 int cw1200_disable_listening(struct cw1200_common *priv)
1483 {
1484         int ret;
1485         struct wsm_reset reset = {
1486                 .reset_statistics = true,
1487         };
1488         ret = wsm_reset(priv, &reset);
1489         return ret;
1490 }
1491
1492 void cw1200_update_listening(struct cw1200_common *priv, bool enabled)
1493 {
1494         if (enabled) {
1495                 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) {
1496                         if (!cw1200_enable_listening(priv))
1497                                 priv->join_status = CW1200_JOIN_STATUS_MONITOR;
1498                         wsm_set_probe_responder(priv, true);
1499                 }
1500         } else {
1501                 if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) {
1502                         if (!cw1200_disable_listening(priv))
1503                                 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1504                         wsm_set_probe_responder(priv, false);
1505                 }
1506         }
1507 }
1508
1509 int cw1200_set_uapsd_param(struct cw1200_common *priv,
1510                            const struct wsm_edca_params *arg)
1511 {
1512         int ret;
1513         u16 uapsd_flags = 0;
1514
1515         /* Here's the mapping AC [queue, bit]
1516          *  VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0]
1517          */
1518
1519         if (arg->uapsd_enable[0])
1520                 uapsd_flags |= 1 << 3;
1521
1522         if (arg->uapsd_enable[1])
1523                 uapsd_flags |= 1 << 2;
1524
1525         if (arg->uapsd_enable[2])
1526                 uapsd_flags |= 1 << 1;
1527
1528         if (arg->uapsd_enable[3])
1529                 uapsd_flags |= 1;
1530
1531         /* Currently pseudo U-APSD operation is not supported, so setting
1532          * MinAutoTriggerInterval, MaxAutoTriggerInterval and
1533          * AutoTriggerStep to 0
1534          */
1535
1536         priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags);
1537         priv->uapsd_info.min_auto_trigger_interval = 0;
1538         priv->uapsd_info.max_auto_trigger_interval = 0;
1539         priv->uapsd_info.auto_trigger_step = 0;
1540
1541         ret = wsm_set_uapsd_info(priv, &priv->uapsd_info);
1542         return ret;
1543 }
1544
1545 /* ******************************************************************** */
1546 /* AP API                                                               */
1547
1548 int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1549                    struct ieee80211_sta *sta)
1550 {
1551         struct cw1200_common *priv = hw->priv;
1552         struct cw1200_sta_priv *sta_priv =
1553                         (struct cw1200_sta_priv *)&sta->drv_priv;
1554         struct cw1200_link_entry *entry;
1555         struct sk_buff *skb;
1556
1557         if (priv->mode != NL80211_IFTYPE_AP)
1558                 return 0;
1559
1560         sta_priv->link_id = cw1200_find_link_id(priv, sta->addr);
1561         if (WARN_ON(!sta_priv->link_id)) {
1562                 wiphy_info(priv->hw->wiphy,
1563                            "[AP] No more link IDs available.\n");
1564                 return -ENOENT;
1565         }
1566
1567         entry = &priv->link_id_db[sta_priv->link_id - 1];
1568         spin_lock_bh(&priv->ps_state_lock);
1569         if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) ==
1570                                         IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
1571                 priv->sta_asleep_mask |= BIT(sta_priv->link_id);
1572         entry->status = CW1200_LINK_HARD;
1573         while ((skb = skb_dequeue(&entry->rx_queue)))
1574                 ieee80211_rx_irqsafe(priv->hw, skb);
1575         spin_unlock_bh(&priv->ps_state_lock);
1576         return 0;
1577 }
1578
1579 int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1580                       struct ieee80211_sta *sta)
1581 {
1582         struct cw1200_common *priv = hw->priv;
1583         struct cw1200_sta_priv *sta_priv =
1584                         (struct cw1200_sta_priv *)&sta->drv_priv;
1585         struct cw1200_link_entry *entry;
1586
1587         if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id)
1588                 return 0;
1589
1590         entry = &priv->link_id_db[sta_priv->link_id - 1];
1591         spin_lock_bh(&priv->ps_state_lock);
1592         entry->status = CW1200_LINK_RESERVE;
1593         entry->timestamp = jiffies;
1594         wsm_lock_tx_async(priv);
1595         if (queue_work(priv->workqueue, &priv->link_id_work) <= 0)
1596                 wsm_unlock_tx(priv);
1597         spin_unlock_bh(&priv->ps_state_lock);
1598         flush_workqueue(priv->workqueue);
1599         return 0;
1600 }
1601
1602 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
1603                                 struct ieee80211_vif *vif,
1604                                 enum sta_notify_cmd notify_cmd,
1605                                 int link_id)
1606 {
1607         struct cw1200_common *priv = dev->priv;
1608         u32 bit, prev;
1609
1610         /* Zero link id means "for all link IDs" */
1611         if (link_id)
1612                 bit = BIT(link_id);
1613         else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE))
1614                 bit = 0;
1615         else
1616                 bit = priv->link_id_map;
1617         prev = priv->sta_asleep_mask & bit;
1618
1619         switch (notify_cmd) {
1620         case STA_NOTIFY_SLEEP:
1621                 if (!prev) {
1622                         if (priv->buffered_multicasts &&
1623                             !priv->sta_asleep_mask)
1624                                 queue_work(priv->workqueue,
1625                                            &priv->multicast_start_work);
1626                         priv->sta_asleep_mask |= bit;
1627                 }
1628                 break;
1629         case STA_NOTIFY_AWAKE:
1630                 if (prev) {
1631                         priv->sta_asleep_mask &= ~bit;
1632                         priv->pspoll_mask &= ~bit;
1633                         if (priv->tx_multicast && link_id &&
1634                             !priv->sta_asleep_mask)
1635                                 queue_work(priv->workqueue,
1636                                            &priv->multicast_stop_work);
1637                         cw1200_bh_wakeup(priv);
1638                 }
1639                 break;
1640         }
1641 }
1642
1643 void cw1200_sta_notify(struct ieee80211_hw *dev,
1644                        struct ieee80211_vif *vif,
1645                        enum sta_notify_cmd notify_cmd,
1646                        struct ieee80211_sta *sta)
1647 {
1648         struct cw1200_common *priv = dev->priv;
1649         struct cw1200_sta_priv *sta_priv =
1650                 (struct cw1200_sta_priv *)&sta->drv_priv;
1651
1652         spin_lock_bh(&priv->ps_state_lock);
1653         __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id);
1654         spin_unlock_bh(&priv->ps_state_lock);
1655 }
1656
1657 static void cw1200_ps_notify(struct cw1200_common *priv,
1658                       int link_id, bool ps)
1659 {
1660         if (link_id > CW1200_MAX_STA_IN_AP_MODE)
1661                 return;
1662
1663         pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n",
1664                  ps ? "Stop" : "Start",
1665                  link_id, priv->sta_asleep_mask);
1666
1667         __cw1200_sta_notify(priv->hw, priv->vif,
1668                             ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id);
1669 }
1670
1671 static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set)
1672 {
1673         struct sk_buff *skb;
1674         struct wsm_update_ie update_ie = {
1675                 .what = WSM_UPDATE_IE_BEACON,
1676                 .count = 1,
1677         };
1678         u16 tim_offset, tim_length;
1679
1680         pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis");
1681
1682         skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
1683                         &tim_offset, &tim_length);
1684         if (!skb) {
1685                 if (!__cw1200_flush(priv, true))
1686                         wsm_unlock_tx(priv);
1687                 return -ENOENT;
1688         }
1689
1690         if (tim_offset && tim_length >= 6) {
1691                 /* Ignore DTIM count from mac80211:
1692                  * firmware handles DTIM internally.
1693                  */
1694                 skb->data[tim_offset + 2] = 0;
1695
1696                 /* Set/reset aid0 bit */
1697                 if (aid0_bit_set)
1698                         skb->data[tim_offset + 4] |= 1;
1699                 else
1700                         skb->data[tim_offset + 4] &= ~1;
1701         }
1702
1703         update_ie.ies = &skb->data[tim_offset];
1704         update_ie.length = tim_length;
1705         wsm_update_ie(priv, &update_ie);
1706
1707         dev_kfree_skb(skb);
1708
1709         return 0;
1710 }
1711
1712 void cw1200_set_tim_work(struct work_struct *work)
1713 {
1714         struct cw1200_common *priv =
1715                 container_of(work, struct cw1200_common, set_tim_work);
1716         (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set);
1717 }
1718
1719 int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1720                    bool set)
1721 {
1722         struct cw1200_common *priv = dev->priv;
1723         queue_work(priv->workqueue, &priv->set_tim_work);
1724         return 0;
1725 }
1726
1727 void cw1200_set_cts_work(struct work_struct *work)
1728 {
1729         struct cw1200_common *priv =
1730                 container_of(work, struct cw1200_common, set_cts_work);
1731
1732         u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0};
1733         struct wsm_update_ie update_ie = {
1734                 .what = WSM_UPDATE_IE_BEACON,
1735                 .count = 1,
1736                 .ies = erp_ie,
1737                 .length = 3,
1738         };
1739         u32 erp_info;
1740         __le32 use_cts_prot;
1741         mutex_lock(&priv->conf_mutex);
1742         erp_info = priv->erp_info;
1743         mutex_unlock(&priv->conf_mutex);
1744         use_cts_prot =
1745                 erp_info & WLAN_ERP_USE_PROTECTION ?
1746                 __cpu_to_le32(1) : 0;
1747
1748         erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info;
1749
1750         pr_debug("[STA] ERP information 0x%x\n", erp_info);
1751
1752         wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION,
1753                       &use_cts_prot, sizeof(use_cts_prot));
1754         wsm_update_ie(priv, &update_ie);
1755
1756         return;
1757 }
1758
1759 static int cw1200_set_btcoexinfo(struct cw1200_common *priv)
1760 {
1761         struct wsm_override_internal_txrate arg;
1762         int ret = 0;
1763
1764         if (priv->mode == NL80211_IFTYPE_STATION) {
1765                 /* Plumb PSPOLL and NULL template */
1766                 cw1200_upload_pspoll(priv);
1767                 cw1200_upload_null(priv);
1768                 cw1200_upload_qosnull(priv);
1769         } else {
1770                 return 0;
1771         }
1772
1773         memset(&arg, 0, sizeof(struct wsm_override_internal_txrate));
1774
1775         if (!priv->vif->p2p) {
1776                 /* STATION mode */
1777                 if (priv->bss_params.operational_rate_set & ~0xF) {
1778                         pr_debug("[STA] STA has ERP rates\n");
1779                         /* G or BG mode */
1780                         arg.internalTxRate = (__ffs(
1781                         priv->bss_params.operational_rate_set & ~0xF));
1782                 } else {
1783                         pr_debug("[STA] STA has non ERP rates\n");
1784                         /* B only mode */
1785                         arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1786                 }
1787                 arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1788         } else {
1789                 /* P2P mode */
1790                 arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1791                 arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1792         }
1793
1794         pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n",
1795                  priv->mode,
1796                  arg.internalTxRate,
1797                  arg.nonErpInternalTxRate);
1798
1799         ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE,
1800                             &arg, sizeof(arg));
1801
1802         return ret;
1803 }
1804
1805 void cw1200_bss_info_changed(struct ieee80211_hw *dev,
1806                              struct ieee80211_vif *vif,
1807                              struct ieee80211_bss_conf *info,
1808                              u32 changed)
1809 {
1810         struct cw1200_common *priv = dev->priv;
1811         bool do_join = false;
1812
1813         mutex_lock(&priv->conf_mutex);
1814
1815         pr_debug("BSS CHANGED:  %08x\n", changed);
1816
1817         /* TODO: BSS_CHANGED_QOS */
1818         /* TODO: BSS_CHANGED_TXPOWER */
1819
1820         if (changed & BSS_CHANGED_ARP_FILTER) {
1821                 struct wsm_mib_arp_ipv4_filter filter = {0};
1822                 int i;
1823
1824                 pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n",
1825                          info->arp_addr_cnt);
1826
1827                 /* Currently only one IP address is supported by firmware.
1828                  * In case of more IPs arp filtering will be disabled.
1829                  */
1830                 if (info->arp_addr_cnt > 0 &&
1831                     info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) {
1832                         for (i = 0; i < info->arp_addr_cnt; i++) {
1833                                 filter.ipv4addrs[i] = info->arp_addr_list[i];
1834                                 pr_debug("[STA] addr[%d]: 0x%X\n",
1835                                          i, filter.ipv4addrs[i]);
1836                         }
1837                         filter.enable = __cpu_to_le32(1);
1838                 }
1839
1840                 pr_debug("[STA] arp ip filter enable: %d\n",
1841                          __le32_to_cpu(filter.enable));
1842
1843                 wsm_set_arp_ipv4_filter(priv, &filter);
1844         }
1845
1846         if (changed &
1847             (BSS_CHANGED_BEACON |
1848              BSS_CHANGED_AP_PROBE_RESP |
1849              BSS_CHANGED_BSSID |
1850              BSS_CHANGED_SSID |
1851              BSS_CHANGED_IBSS)) {
1852                 pr_debug("BSS_CHANGED_BEACON\n");
1853                 priv->beacon_int = info->beacon_int;
1854                 cw1200_update_beaconing(priv);
1855                 cw1200_upload_beacon(priv);
1856         }
1857
1858         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1859                 pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon);
1860
1861                 if (priv->enable_beacon != info->enable_beacon) {
1862                         cw1200_enable_beaconing(priv, info->enable_beacon);
1863                         priv->enable_beacon = info->enable_beacon;
1864                 }
1865         }
1866
1867         if (changed & BSS_CHANGED_BEACON_INT) {
1868                 pr_debug("CHANGED_BEACON_INT\n");
1869                 if (info->ibss_joined)
1870                         do_join = true;
1871                 else if (priv->join_status == CW1200_JOIN_STATUS_AP)
1872                         cw1200_update_beaconing(priv);
1873         }
1874
1875         /* assoc/disassoc, or maybe AID changed */
1876         if (changed & BSS_CHANGED_ASSOC) {
1877                 wsm_lock_tx(priv);
1878                 priv->wep_default_key_id = -1;
1879                 wsm_unlock_tx(priv);
1880         }
1881
1882         if (changed & BSS_CHANGED_BSSID) {
1883                 pr_debug("BSS_CHANGED_BSSID\n");
1884                 do_join = true;
1885         }
1886
1887         if (changed &
1888             (BSS_CHANGED_ASSOC |
1889              BSS_CHANGED_BSSID |
1890              BSS_CHANGED_IBSS |
1891              BSS_CHANGED_BASIC_RATES |
1892              BSS_CHANGED_HT)) {
1893                 pr_debug("BSS_CHANGED_ASSOC\n");
1894                 if (info->assoc) {
1895                         if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) {
1896                                 ieee80211_connection_loss(vif);
1897                                 mutex_unlock(&priv->conf_mutex);
1898                                 return;
1899                         } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) {
1900                                 priv->join_status = CW1200_JOIN_STATUS_STA;
1901                         }
1902                 } else {
1903                         do_join = true;
1904                 }
1905
1906                 if (info->assoc || info->ibss_joined) {
1907                         struct ieee80211_sta *sta = NULL;
1908                         __le32 htprot = 0;
1909
1910                         if (info->dtim_period)
1911                                 priv->join_dtim_period = info->dtim_period;
1912                         priv->beacon_int = info->beacon_int;
1913
1914                         rcu_read_lock();
1915
1916                         if (info->bssid && !info->ibss_joined)
1917                                 sta = ieee80211_find_sta(vif, info->bssid);
1918                         if (sta) {
1919                                 priv->ht_info.ht_cap = sta->ht_cap;
1920                                 priv->bss_params.operational_rate_set =
1921                                         cw1200_rate_mask_to_wsm(priv,
1922                                                                 sta->supp_rates[priv->channel->band]);
1923                                 priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef);
1924                                 priv->ht_info.operation_mode = info->ht_operation_mode;
1925                         } else {
1926                                 memset(&priv->ht_info, 0,
1927                                        sizeof(priv->ht_info));
1928                                 priv->bss_params.operational_rate_set = -1;
1929                         }
1930                         rcu_read_unlock();
1931
1932                         /* Non Greenfield stations present */
1933                         if (priv->ht_info.operation_mode &
1934                             IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)
1935                                 htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT);
1936
1937                         /* Set HT protection method */
1938                         htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2);
1939
1940                         /* TODO:
1941                          * STBC_param.dual_cts
1942                          *  STBC_param.LSIG_TXOP_FILL
1943                          */
1944
1945                         wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION,
1946                                       &htprot, sizeof(htprot));
1947
1948                         priv->association_mode.greenfield =
1949                                 cw1200_ht_greenfield(&priv->ht_info);
1950                         priv->association_mode.flags =
1951                                 WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES |
1952                                 WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE |
1953                                 WSM_ASSOCIATION_MODE_USE_HT_MODE |
1954                                 WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET |
1955                                 WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING;
1956                         priv->association_mode.preamble =
1957                                 info->use_short_preamble ?
1958                                 WSM_JOIN_PREAMBLE_SHORT :
1959                                 WSM_JOIN_PREAMBLE_LONG;
1960                         priv->association_mode.basic_rate_set = __cpu_to_le32(
1961                                 cw1200_rate_mask_to_wsm(priv,
1962                                                         info->basic_rates));
1963                         priv->association_mode.mpdu_start_spacing =
1964                                 cw1200_ht_ampdu_density(&priv->ht_info);
1965
1966                         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1967                         cancel_work_sync(&priv->unjoin_work);
1968
1969                         priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count;
1970                         priv->bss_params.aid = info->aid;
1971
1972                         if (priv->join_dtim_period < 1)
1973                                 priv->join_dtim_period = 1;
1974
1975                         pr_debug("[STA] DTIM %d, interval: %d\n",
1976                                  priv->join_dtim_period, priv->beacon_int);
1977                         pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n",
1978                                  priv->association_mode.preamble,
1979                                  priv->association_mode.greenfield,
1980                                  priv->bss_params.aid,
1981                                  priv->bss_params.operational_rate_set,
1982                                  priv->association_mode.basic_rate_set);
1983                         wsm_set_association_mode(priv, &priv->association_mode);
1984
1985                         if (!info->ibss_joined) {
1986                                 wsm_keep_alive_period(priv, 30 /* sec */);
1987                                 wsm_set_bss_params(priv, &priv->bss_params);
1988                                 priv->setbssparams_done = true;
1989                                 cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work);
1990                                 cw1200_set_pm(priv, &priv->powersave_mode);
1991                         }
1992                         if (priv->vif->p2p) {
1993                                 pr_debug("[STA] Setting p2p powersave configuration.\n");
1994                                 wsm_set_p2p_ps_modeinfo(priv,
1995                                                         &priv->p2p_ps_modeinfo);
1996                         }
1997                         if (priv->bt_present)
1998                                 cw1200_set_btcoexinfo(priv);
1999                 } else {
2000                         memset(&priv->association_mode, 0,
2001                                sizeof(priv->association_mode));
2002                         memset(&priv->bss_params, 0, sizeof(priv->bss_params));
2003                 }
2004         }
2005
2006         /* ERP Protection */
2007         if (changed & (BSS_CHANGED_ASSOC |
2008                        BSS_CHANGED_ERP_CTS_PROT |
2009                        BSS_CHANGED_ERP_PREAMBLE)) {
2010                 u32 prev_erp_info = priv->erp_info;
2011                 if (info->use_cts_prot)
2012                         priv->erp_info |= WLAN_ERP_USE_PROTECTION;
2013                 else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT))
2014                         priv->erp_info &= ~WLAN_ERP_USE_PROTECTION;
2015
2016                 if (info->use_short_preamble)
2017                         priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE;
2018                 else
2019                         priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE;
2020
2021                 pr_debug("[STA] ERP Protection: %x\n", priv->erp_info);
2022
2023                 if (prev_erp_info != priv->erp_info)
2024                         queue_work(priv->workqueue, &priv->set_cts_work);
2025         }
2026
2027         /* ERP Slottime */
2028         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) {
2029                 __le32 slot_time = info->use_short_slot ?
2030                         __cpu_to_le32(9) : __cpu_to_le32(20);
2031                 pr_debug("[STA] Slot time: %d us.\n",
2032                          __le32_to_cpu(slot_time));
2033                 wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME,
2034                               &slot_time, sizeof(slot_time));
2035         }
2036
2037         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) {
2038                 struct wsm_rcpi_rssi_threshold threshold = {
2039                         .rollingAverageCount = 8,
2040                 };
2041                 pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n",
2042                          info->cqm_rssi_thold, info->cqm_rssi_hyst);
2043                 priv->cqm_rssi_thold = info->cqm_rssi_thold;
2044                 priv->cqm_rssi_hyst = info->cqm_rssi_hyst;
2045
2046                 if (info->cqm_rssi_thold || info->cqm_rssi_hyst) {
2047                         /* RSSI subscription enabled */
2048                         /* TODO: It's not a correct way of setting threshold.
2049                          * Upper and lower must be set equal here and adjusted
2050                          * in callback. However current implementation is much
2051                          * more relaible and stable.
2052                          */
2053
2054                         /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
2055                          * RSSI = RCPI / 2 - 110
2056                          */
2057                         if (priv->cqm_use_rssi) {
2058                                 threshold.upperThreshold =
2059                                         info->cqm_rssi_thold + info->cqm_rssi_hyst;
2060                                 threshold.lowerThreshold =
2061                                         info->cqm_rssi_thold;
2062                                 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2063                         } else {
2064                                 threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2;
2065                                 threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2;
2066                         }
2067                         threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE;
2068                 } else {
2069                         /* There is a bug in FW, see sta.c. We have to enable
2070                          * dummy subscription to get correct RSSI values.
2071                          */
2072                         threshold.rssiRcpiMode |=
2073                                 WSM_RCPI_RSSI_THRESHOLD_ENABLE |
2074                                 WSM_RCPI_RSSI_DONT_USE_UPPER |
2075                                 WSM_RCPI_RSSI_DONT_USE_LOWER;
2076                         if (priv->cqm_use_rssi)
2077                                 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2078                 }
2079                 wsm_set_rcpi_rssi_threshold(priv, &threshold);
2080         }
2081         mutex_unlock(&priv->conf_mutex);
2082
2083         if (do_join) {
2084                 wsm_lock_tx(priv);
2085                 cw1200_do_join(priv); /* Will unlock it for us */
2086         }
2087 }
2088
2089 void cw1200_multicast_start_work(struct work_struct *work)
2090 {
2091         struct cw1200_common *priv =
2092                 container_of(work, struct cw1200_common, multicast_start_work);
2093         long tmo = priv->join_dtim_period *
2094                         (priv->beacon_int + 20) * HZ / 1024;
2095
2096         cancel_work_sync(&priv->multicast_stop_work);
2097
2098         if (!priv->aid0_bit_set) {
2099                 wsm_lock_tx(priv);
2100                 cw1200_set_tim_impl(priv, true);
2101                 priv->aid0_bit_set = true;
2102                 mod_timer(&priv->mcast_timeout, jiffies + tmo);
2103                 wsm_unlock_tx(priv);
2104         }
2105 }
2106
2107 void cw1200_multicast_stop_work(struct work_struct *work)
2108 {
2109         struct cw1200_common *priv =
2110                 container_of(work, struct cw1200_common, multicast_stop_work);
2111
2112         if (priv->aid0_bit_set) {
2113                 del_timer_sync(&priv->mcast_timeout);
2114                 wsm_lock_tx(priv);
2115                 priv->aid0_bit_set = false;
2116                 cw1200_set_tim_impl(priv, false);
2117                 wsm_unlock_tx(priv);
2118         }
2119 }
2120
2121 void cw1200_mcast_timeout(unsigned long arg)
2122 {
2123         struct cw1200_common *priv =
2124                 (struct cw1200_common *)arg;
2125
2126         wiphy_warn(priv->hw->wiphy,
2127                    "Multicast delivery timeout.\n");
2128         spin_lock_bh(&priv->ps_state_lock);
2129         priv->tx_multicast = priv->aid0_bit_set &&
2130                         priv->buffered_multicasts;
2131         if (priv->tx_multicast)
2132                 cw1200_bh_wakeup(priv);
2133         spin_unlock_bh(&priv->ps_state_lock);
2134 }
2135
2136 int cw1200_ampdu_action(struct ieee80211_hw *hw,
2137                         struct ieee80211_vif *vif,
2138                         enum ieee80211_ampdu_mlme_action action,
2139                         struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2140                         u8 buf_size, bool amsdu)
2141 {
2142         /* Aggregation is implemented fully in firmware,
2143          * including block ack negotiation. Do not allow
2144          * mac80211 stack to do anything: it interferes with
2145          * the firmware.
2146          */
2147
2148         /* Note that we still need this function stubbed. */
2149         return -ENOTSUPP;
2150 }
2151
2152 /* ******************************************************************** */
2153 /* WSM callback                                                         */
2154 void cw1200_suspend_resume(struct cw1200_common *priv,
2155                           struct wsm_suspend_resume *arg)
2156 {
2157         pr_debug("[AP] %s: %s\n",
2158                  arg->stop ? "stop" : "start",
2159                  arg->multicast ? "broadcast" : "unicast");
2160
2161         if (arg->multicast) {
2162                 bool cancel_tmo = false;
2163                 spin_lock_bh(&priv->ps_state_lock);
2164                 if (arg->stop) {
2165                         priv->tx_multicast = false;
2166                 } else {
2167                         /* Firmware sends this indication every DTIM if there
2168                          * is a STA in powersave connected. There is no reason
2169                          * to suspend, following wakeup will consume much more
2170                          * power than it could be saved.
2171                          */
2172                         cw1200_pm_stay_awake(&priv->pm_state,
2173                                              priv->join_dtim_period *
2174                                              (priv->beacon_int + 20) * HZ / 1024);
2175                         priv->tx_multicast = (priv->aid0_bit_set &&
2176                                               priv->buffered_multicasts);
2177                         if (priv->tx_multicast) {
2178                                 cancel_tmo = true;
2179                                 cw1200_bh_wakeup(priv);
2180                         }
2181                 }
2182                 spin_unlock_bh(&priv->ps_state_lock);
2183                 if (cancel_tmo)
2184                         del_timer_sync(&priv->mcast_timeout);
2185         } else {
2186                 spin_lock_bh(&priv->ps_state_lock);
2187                 cw1200_ps_notify(priv, arg->link_id, arg->stop);
2188                 spin_unlock_bh(&priv->ps_state_lock);
2189                 if (!arg->stop)
2190                         cw1200_bh_wakeup(priv);
2191         }
2192         return;
2193 }
2194
2195 /* ******************************************************************** */
2196 /* AP privates                                                          */
2197
2198 static int cw1200_upload_beacon(struct cw1200_common *priv)
2199 {
2200         int ret = 0;
2201         struct ieee80211_mgmt *mgmt;
2202         struct wsm_template_frame frame = {
2203                 .frame_type = WSM_FRAME_TYPE_BEACON,
2204         };
2205
2206         u16 tim_offset;
2207         u16 tim_len;
2208
2209         if (priv->mode == NL80211_IFTYPE_STATION ||
2210             priv->mode == NL80211_IFTYPE_MONITOR ||
2211             priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2212                 goto done;
2213
2214         if (priv->vif->p2p)
2215                 frame.rate = WSM_TRANSMIT_RATE_6;
2216
2217         frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
2218                                              &tim_offset, &tim_len);
2219         if (!frame.skb)
2220                 return -ENOMEM;
2221
2222         ret = wsm_set_template_frame(priv, &frame);
2223
2224         if (ret)
2225                 goto done;
2226
2227         /* TODO: Distill probe resp; remove TIM
2228          * and any other beacon-specific IEs
2229          */
2230         mgmt = (void *)frame.skb->data;
2231         mgmt->frame_control =
2232                 __cpu_to_le16(IEEE80211_FTYPE_MGMT |
2233                               IEEE80211_STYPE_PROBE_RESP);
2234
2235         frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE;
2236         if (priv->vif->p2p) {
2237                 ret = wsm_set_probe_responder(priv, true);
2238         } else {
2239                 ret = wsm_set_template_frame(priv, &frame);
2240                 wsm_set_probe_responder(priv, false);
2241         }
2242
2243 done:
2244         dev_kfree_skb(frame.skb);
2245
2246         return ret;
2247 }
2248
2249 static int cw1200_upload_pspoll(struct cw1200_common *priv)
2250 {
2251         int ret = 0;
2252         struct wsm_template_frame frame = {
2253                 .frame_type = WSM_FRAME_TYPE_PS_POLL,
2254                 .rate = 0xFF,
2255         };
2256
2257
2258         frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif);
2259         if (!frame.skb)
2260                 return -ENOMEM;
2261
2262         ret = wsm_set_template_frame(priv, &frame);
2263
2264         dev_kfree_skb(frame.skb);
2265
2266         return ret;
2267 }
2268
2269 static int cw1200_upload_null(struct cw1200_common *priv)
2270 {
2271         int ret = 0;
2272         struct wsm_template_frame frame = {
2273                 .frame_type = WSM_FRAME_TYPE_NULL,
2274                 .rate = 0xFF,
2275         };
2276
2277         frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
2278         if (!frame.skb)
2279                 return -ENOMEM;
2280
2281         ret = wsm_set_template_frame(priv, &frame);
2282
2283         dev_kfree_skb(frame.skb);
2284
2285         return ret;
2286 }
2287
2288 static int cw1200_upload_qosnull(struct cw1200_common *priv)
2289 {
2290         /* TODO:  This needs to be implemented
2291
2292         struct wsm_template_frame frame = {
2293                 .frame_type = WSM_FRAME_TYPE_QOS_NULL,
2294                 .rate = 0xFF,
2295         };
2296
2297         frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif);
2298         if (!frame.skb)
2299                 return -ENOMEM;
2300
2301         ret = wsm_set_template_frame(priv, &frame);
2302
2303         dev_kfree_skb(frame.skb);
2304
2305         */
2306         return 0;
2307 }
2308
2309 static int cw1200_enable_beaconing(struct cw1200_common *priv,
2310                                    bool enable)
2311 {
2312         struct wsm_beacon_transmit transmit = {
2313                 .enable_beaconing = enable,
2314         };
2315
2316         return wsm_beacon_transmit(priv, &transmit);
2317 }
2318
2319 static int cw1200_start_ap(struct cw1200_common *priv)
2320 {
2321         int ret;
2322         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2323         struct wsm_start start = {
2324                 .mode = priv->vif->p2p ?
2325                                 WSM_START_MODE_P2P_GO : WSM_START_MODE_AP,
2326                 .band = (priv->channel->band == IEEE80211_BAND_5GHZ) ?
2327                                 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G,
2328                 .channel_number = priv->channel->hw_value,
2329                 .beacon_interval = conf->beacon_int,
2330                 .dtim_period = conf->dtim_period,
2331                 .preamble = conf->use_short_preamble ?
2332                                 WSM_JOIN_PREAMBLE_SHORT :
2333                                 WSM_JOIN_PREAMBLE_LONG,
2334                 .probe_delay = 100,
2335                 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
2336                                 conf->basic_rates),
2337         };
2338         struct wsm_operational_mode mode = {
2339                 .power_mode = cw1200_power_mode,
2340                 .disable_more_flag_usage = true,
2341         };
2342
2343         memset(start.ssid, 0, sizeof(start.ssid));
2344         if (!conf->hidden_ssid) {
2345                 start.ssid_len = conf->ssid_len;
2346                 memcpy(start.ssid, conf->ssid, start.ssid_len);
2347         }
2348
2349         priv->beacon_int = conf->beacon_int;
2350         priv->join_dtim_period = conf->dtim_period;
2351
2352         memset(&priv->link_id_db, 0, sizeof(priv->link_id_db));
2353
2354         pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n",
2355                  start.channel_number, start.band,
2356                  start.beacon_interval, start.dtim_period,
2357                  start.basic_rate_set,
2358                  start.ssid_len, start.ssid);
2359         ret = wsm_start(priv, &start);
2360         if (!ret)
2361                 ret = cw1200_upload_keys(priv);
2362         if (!ret && priv->vif->p2p) {
2363                 pr_debug("[AP] Setting p2p powersave configuration.\n");
2364                 wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo);
2365         }
2366         if (!ret) {
2367                 wsm_set_block_ack_policy(priv, 0, 0);
2368                 priv->join_status = CW1200_JOIN_STATUS_AP;
2369                 cw1200_update_filtering(priv);
2370         }
2371         wsm_set_operational_mode(priv, &mode);
2372         return ret;
2373 }
2374
2375 static int cw1200_update_beaconing(struct cw1200_common *priv)
2376 {
2377         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2378         struct wsm_reset reset = {
2379                 .link_id = 0,
2380                 .reset_statistics = true,
2381         };
2382
2383         if (priv->mode == NL80211_IFTYPE_AP) {
2384                 /* TODO: check if changed channel, band */
2385                 if (priv->join_status != CW1200_JOIN_STATUS_AP ||
2386                     priv->beacon_int != conf->beacon_int) {
2387                         pr_debug("ap restarting\n");
2388                         wsm_lock_tx(priv);
2389                         if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE)
2390                                 wsm_reset(priv, &reset);
2391                         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
2392                         cw1200_start_ap(priv);
2393                         wsm_unlock_tx(priv);
2394                 } else
2395                         pr_debug("ap started join_status: %d\n",
2396                                  priv->join_status);
2397         }
2398         return 0;
2399 }