git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/ath9k/virtual.c

   1 /*
   2  * Copyright (c) 2008-2009 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "ath9k.h"
  18
  19 struct ath9k_vif_iter_data {
  20         int count;
  21         u8 *addr;
  22 };
  23
  24 static void ath9k_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
  25 {
  26         struct ath9k_vif_iter_data *iter_data = data;
  27         u8 *nbuf;
  28
  29         nbuf = krealloc(iter_data->addr, (iter_data->count + 1) * ETH_ALEN,
  30                         GFP_ATOMIC);
  31         if (nbuf == NULL)
  32                 return;
  33
  34         memcpy(nbuf + iter_data->count * ETH_ALEN, mac, ETH_ALEN);
  35         iter_data->addr = nbuf;
  36         iter_data->count++;
  37 }
  38
  39 void ath9k_set_bssid_mask(struct ieee80211_hw *hw)
  40 {
  41         struct ath_wiphy *aphy = hw->priv;
  42         struct ath_softc *sc = aphy->sc;
  43         struct ath9k_vif_iter_data iter_data;
  44         int i, j;
  45         u8 mask[ETH_ALEN];
  46
  47         /*
  48          * Add primary MAC address even if it is not in active use since it
  49          * will be configured to the hardware as the starting point and the
  50          * BSSID mask will need to be changed if another address is active.
  51          */
  52         iter_data.addr = kmalloc(ETH_ALEN, GFP_ATOMIC);
  53         if (iter_data.addr) {
  54                 memcpy(iter_data.addr, sc->sc_ah->macaddr, ETH_ALEN);
  55                 iter_data.count = 1;
  56         } else
  57                 iter_data.count = 0;
  58
  59         /* Get list of all active MAC addresses */
  60         spin_lock_bh(&sc->wiphy_lock);
  61         ieee80211_iterate_active_interfaces_atomic(sc->hw, ath9k_vif_iter,
  62                                                    &iter_data);
  63         for (i = 0; i < sc->num_sec_wiphy; i++) {
  64                 if (sc->sec_wiphy[i] == NULL)
  65                         continue;
  66                 ieee80211_iterate_active_interfaces_atomic(
  67                         sc->sec_wiphy[i]->hw, ath9k_vif_iter, &iter_data);
  68         }
  69         spin_unlock_bh(&sc->wiphy_lock);
  70
  71         /* Generate an address mask to cover all active addresses */
  72         memset(mask, 0, ETH_ALEN);
  73         for (i = 0; i < iter_data.count; i++) {
  74                 u8 *a1 = iter_data.addr + i * ETH_ALEN;
  75                 for (j = i + 1; j < iter_data.count; j++) {
  76                         u8 *a2 = iter_data.addr + j * ETH_ALEN;
  77                         mask[0] |= a1[0] ^ a2[0];
  78                         mask[1] |= a1[1] ^ a2[1];
  79                         mask[2] |= a1[2] ^ a2[2];
  80                         mask[3] |= a1[3] ^ a2[3];
  81                         mask[4] |= a1[4] ^ a2[4];
  82                         mask[5] |= a1[5] ^ a2[5];
  83                 }
  84         }
  85
  86         kfree(iter_data.addr);
  87
  88         /* Invert the mask and configure hardware */
  89         sc->bssidmask[0] = ~mask[0];
  90         sc->bssidmask[1] = ~mask[1];
  91         sc->bssidmask[2] = ~mask[2];
  92         sc->bssidmask[3] = ~mask[3];
  93         sc->bssidmask[4] = ~mask[4];
  94         sc->bssidmask[5] = ~mask[5];
  95
  96         ath9k_hw_setbssidmask(sc);
  97 }
  98
  99 int ath9k_wiphy_add(struct ath_softc *sc)
 100 {
 101         int i, error;
 102         struct ath_wiphy *aphy;
 103         struct ieee80211_hw *hw;
 104         u8 addr[ETH_ALEN];
 105
 106         hw = ieee80211_alloc_hw(sizeof(struct ath_wiphy), &ath9k_ops);
 107         if (hw == NULL)
 108                 return -ENOMEM;
 109
 110         spin_lock_bh(&sc->wiphy_lock);
 111         for (i = 0; i < sc->num_sec_wiphy; i++) {
 112                 if (sc->sec_wiphy[i] == NULL)
 113                         break;
 114         }
 115
 116         if (i == sc->num_sec_wiphy) {
 117                 /* No empty slot available; increase array length */
 118                 struct ath_wiphy **n;
 119                 n = krealloc(sc->sec_wiphy,
 120                              (sc->num_sec_wiphy + 1) *
 121                              sizeof(struct ath_wiphy *),
 122                              GFP_ATOMIC);
 123                 if (n == NULL) {
 124                         spin_unlock_bh(&sc->wiphy_lock);
 125                         ieee80211_free_hw(hw);
 126                         return -ENOMEM;
 127                 }
 128                 n[i] = NULL;
 129                 sc->sec_wiphy = n;
 130                 sc->num_sec_wiphy++;
 131         }
 132
 133         SET_IEEE80211_DEV(hw, sc->dev);
 134
 135         aphy = hw->priv;
 136         aphy->sc = sc;
 137         aphy->hw = hw;
 138         sc->sec_wiphy[i] = aphy;
 139         spin_unlock_bh(&sc->wiphy_lock);
 140
 141         memcpy(addr, sc->sc_ah->macaddr, ETH_ALEN);
 142         addr[0] |= 0x02; /* Locally managed address */
 143         /*
 144          * XOR virtual wiphy index into the least significant bits to generate
 145          * a different MAC address for each virtual wiphy.
 146          */
 147         addr[5] ^= i & 0xff;
 148         addr[4] ^= (i & 0xff00) >> 8;
 149         addr[3] ^= (i & 0xff0000) >> 16;
 150
 151         SET_IEEE80211_PERM_ADDR(hw, addr);
 152
 153         ath_set_hw_capab(sc, hw);
 154
 155         error = ieee80211_register_hw(hw);
 156
 157         return error;
 158 }
 159
 160 int ath9k_wiphy_del(struct ath_wiphy *aphy)
 161 {
 162         struct ath_softc *sc = aphy->sc;
 163         int i;
 164
 165         spin_lock_bh(&sc->wiphy_lock);
 166         for (i = 0; i < sc->num_sec_wiphy; i++) {
 167                 if (aphy == sc->sec_wiphy[i]) {
 168                         sc->sec_wiphy[i] = NULL;
 169                         spin_unlock_bh(&sc->wiphy_lock);
 170                         ieee80211_unregister_hw(aphy->hw);
 171                         ieee80211_free_hw(aphy->hw);
 172                         return 0;
 173                 }
 174         }
 175         spin_unlock_bh(&sc->wiphy_lock);
 176         return -ENOENT;
 177 }
 178
 179 static int ath9k_send_nullfunc(struct ath_wiphy *aphy,
 180                                struct ieee80211_vif *vif, const u8 *bssid,
 181                                int ps)
 182 {
 183         struct ath_softc *sc = aphy->sc;
 184         struct ath_tx_control txctl;
 185         struct sk_buff *skb;
 186         struct ieee80211_hdr *hdr;
 187         __le16 fc;
 188         struct ieee80211_tx_info *info;
 189
 190         skb = dev_alloc_skb(24);
 191         if (skb == NULL)
 192                 return -ENOMEM;
 193         hdr = (struct ieee80211_hdr *) skb_put(skb, 24);
 194         memset(hdr, 0, 24);
 195         fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
 196                          IEEE80211_FCTL_TODS);
 197         if (ps)
 198                 fc |= cpu_to_le16(IEEE80211_FCTL_PM);
 199         hdr->frame_control = fc;
 200         memcpy(hdr->addr1, bssid, ETH_ALEN);
 201         memcpy(hdr->addr2, aphy->hw->wiphy->perm_addr, ETH_ALEN);
 202         memcpy(hdr->addr3, bssid, ETH_ALEN);
 203
 204         info = IEEE80211_SKB_CB(skb);
 205         memset(info, 0, sizeof(*info));
 206         info->flags = IEEE80211_TX_CTL_REQ_TX_STATUS;
 207         info->control.vif = vif;
 208         info->control.rates[0].idx = 0;
 209         info->control.rates[0].count = 4;
 210         info->control.rates[1].idx = -1;
 211
 212         memset(&txctl, 0, sizeof(struct ath_tx_control));
 213         txctl.txq = &sc->tx.txq[sc->tx.hwq_map[ATH9K_WME_AC_VO]];
 214         txctl.frame_type = ps ? ATH9K_INT_PAUSE : ATH9K_INT_UNPAUSE;
 215
 216         if (ath_tx_start(aphy->hw, skb, &txctl) != 0)
 217                 goto exit;
 218
 219         return 0;
 220 exit:
 221         dev_kfree_skb_any(skb);
 222         return -1;
 223 }
 224
 225 static bool __ath9k_wiphy_pausing(struct ath_softc *sc)
 226 {
 227         int i;
 228         if (sc->pri_wiphy->state == ATH_WIPHY_PAUSING)
 229                 return true;
 230         for (i = 0; i < sc->num_sec_wiphy; i++) {
 231                 if (sc->sec_wiphy[i] &&
 232                     sc->sec_wiphy[i]->state == ATH_WIPHY_PAUSING)
 233                         return true;
 234         }
 235         return false;
 236 }
 237
 238 static bool ath9k_wiphy_pausing(struct ath_softc *sc)
 239 {
 240         bool ret;
 241         spin_lock_bh(&sc->wiphy_lock);
 242         ret = __ath9k_wiphy_pausing(sc);
 243         spin_unlock_bh(&sc->wiphy_lock);
 244         return ret;
 245 }
 246
 247 static bool __ath9k_wiphy_scanning(struct ath_softc *sc)
 248 {
 249         int i;
 250         if (sc->pri_wiphy->state == ATH_WIPHY_SCAN)
 251                 return true;
 252         for (i = 0; i < sc->num_sec_wiphy; i++) {
 253                 if (sc->sec_wiphy[i] &&
 254                     sc->sec_wiphy[i]->state == ATH_WIPHY_SCAN)
 255                         return true;
 256         }
 257         return false;
 258 }
 259
 260 bool ath9k_wiphy_scanning(struct ath_softc *sc)
 261 {
 262         bool ret;
 263         spin_lock_bh(&sc->wiphy_lock);
 264         ret = __ath9k_wiphy_scanning(sc);
 265         spin_unlock_bh(&sc->wiphy_lock);
 266         return ret;
 267 }
 268
 269 static int __ath9k_wiphy_unpause(struct ath_wiphy *aphy);
 270
 271 /* caller must hold wiphy_lock */
 272 static void __ath9k_wiphy_unpause_ch(struct ath_wiphy *aphy)
 273 {
 274         if (aphy == NULL)
 275                 return;
 276         if (aphy->chan_idx != aphy->sc->chan_idx)
 277                 return; /* wiphy not on the selected channel */
 278         __ath9k_wiphy_unpause(aphy);
 279 }
 280
 281 static void ath9k_wiphy_unpause_channel(struct ath_softc *sc)
 282 {
 283         int i;
 284         spin_lock_bh(&sc->wiphy_lock);
 285         __ath9k_wiphy_unpause_ch(sc->pri_wiphy);
 286         for (i = 0; i < sc->num_sec_wiphy; i++)
 287                 __ath9k_wiphy_unpause_ch(sc->sec_wiphy[i]);
 288         spin_unlock_bh(&sc->wiphy_lock);
 289 }
 290
 291 void ath9k_wiphy_chan_work(struct work_struct *work)
 292 {
 293         struct ath_softc *sc = container_of(work, struct ath_softc, chan_work);
 294         struct ath_wiphy *aphy = sc->next_wiphy;
 295
 296         if (aphy == NULL)
 297                 return;
 298
 299         /*
 300          * All pending interfaces paused; ready to change
 301          * channels.
 302          */
 303
 304         /* Change channels */
 305         mutex_lock(&sc->mutex);
 306         /* XXX: remove me eventually */
 307         ath9k_update_ichannel(sc, aphy->hw,
 308                               &sc->sc_ah->channels[sc->chan_idx]);
 309         ath_update_chainmask(sc, sc->chan_is_ht);
 310         if (ath_set_channel(sc, aphy->hw,
 311                             &sc->sc_ah->channels[sc->chan_idx]) < 0) {
 312                 printk(KERN_DEBUG "ath9k: Failed to set channel for new "
 313                        "virtual wiphy\n");
 314                 mutex_unlock(&sc->mutex);
 315                 return;
 316         }
 317         mutex_unlock(&sc->mutex);
 318
 319         ath9k_wiphy_unpause_channel(sc);
 320 }
 321
 322 /*
 323  * ath9k version of ieee80211_tx_status() for TX frames that are generated
 324  * internally in the driver.
 325  */
 326 void ath9k_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 327 {
 328         struct ath_wiphy *aphy = hw->priv;
 329         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 330         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 331         struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
 332
 333         if (tx_info_priv && tx_info_priv->frame_type == ATH9K_INT_PAUSE &&
 334             aphy->state == ATH_WIPHY_PAUSING) {
 335                 if (!(info->flags & IEEE80211_TX_STAT_ACK)) {
 336                         printk(KERN_DEBUG "ath9k: %s: no ACK for pause "
 337                                "frame\n", wiphy_name(hw->wiphy));
 338                         /*
 339                          * The AP did not reply; ignore this to allow us to
 340                          * continue.
 341                          */
 342                 }
 343                 aphy->state = ATH_WIPHY_PAUSED;
 344                 if (!ath9k_wiphy_pausing(aphy->sc)) {
 345                         /*
 346                          * Drop from tasklet to work to allow mutex for channel
 347                          * change.
 348                          */
 349                         queue_work(aphy->sc->hw->workqueue,
 350                                    &aphy->sc->chan_work);
 351                 }
 352         }
 353
 354         kfree(tx_info_priv);
 355         tx_info->rate_driver_data[0] = NULL;
 356
 357         dev_kfree_skb(skb);
 358 }
 359
 360 static void ath9k_mark_paused(struct ath_wiphy *aphy)
 361 {
 362         struct ath_softc *sc = aphy->sc;
 363         aphy->state = ATH_WIPHY_PAUSED;
 364         if (!__ath9k_wiphy_pausing(sc))
 365                 queue_work(sc->hw->workqueue, &sc->chan_work);
 366 }
 367
 368 static void ath9k_pause_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
 369 {
 370         struct ath_wiphy *aphy = data;
 371         struct ath_vif *avp = (void *) vif->drv_priv;
 372
 373         switch (vif->type) {
 374         case NL80211_IFTYPE_STATION:
 375                 if (!vif->bss_conf.assoc) {
 376                         ath9k_mark_paused(aphy);
 377                         break;
 378                 }
 379                 /* TODO: could avoid this if already in PS mode */
 380                 if (ath9k_send_nullfunc(aphy, vif, avp->bssid, 1)) {
 381                         printk(KERN_DEBUG "%s: failed to send PS nullfunc\n",
 382                                __func__);
 383                         ath9k_mark_paused(aphy);
 384                 }
 385                 break;
 386         case NL80211_IFTYPE_AP:
 387                 /* Beacon transmission is paused by aphy->state change */
 388                 ath9k_mark_paused(aphy);
 389                 break;
 390         default:
 391                 break;
 392         }
 393 }
 394
 395 /* caller must hold wiphy_lock */
 396 static int __ath9k_wiphy_pause(struct ath_wiphy *aphy)
 397 {
 398         ieee80211_stop_queues(aphy->hw);
 399         aphy->state = ATH_WIPHY_PAUSING;
 400         /*
 401          * TODO: handle PAUSING->PAUSED for the case where there are multiple
 402          * active vifs (now we do it on the first vif getting ready; should be
 403          * on the last)
 404          */
 405         ieee80211_iterate_active_interfaces_atomic(aphy->hw, ath9k_pause_iter,
 406                                                    aphy);
 407         return 0;
 408 }
 409
 410 int ath9k_wiphy_pause(struct ath_wiphy *aphy)
 411 {
 412         int ret;
 413         spin_lock_bh(&aphy->sc->wiphy_lock);
 414         ret = __ath9k_wiphy_pause(aphy);
 415         spin_unlock_bh(&aphy->sc->wiphy_lock);
 416         return ret;
 417 }
 418
 419 static void ath9k_unpause_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
 420 {
 421         struct ath_wiphy *aphy = data;
 422         struct ath_vif *avp = (void *) vif->drv_priv;
 423
 424         switch (vif->type) {
 425         case NL80211_IFTYPE_STATION:
 426                 if (!vif->bss_conf.assoc)
 427                         break;
 428                 ath9k_send_nullfunc(aphy, vif, avp->bssid, 0);
 429                 break;
 430         case NL80211_IFTYPE_AP:
 431                 /* Beacon transmission is re-enabled by aphy->state change */
 432                 break;
 433         default:
 434                 break;
 435         }
 436 }
 437
 438 /* caller must hold wiphy_lock */
 439 static int __ath9k_wiphy_unpause(struct ath_wiphy *aphy)
 440 {
 441         ieee80211_iterate_active_interfaces_atomic(aphy->hw,
 442                                                    ath9k_unpause_iter, aphy);
 443         aphy->state = ATH_WIPHY_ACTIVE;
 444         ieee80211_wake_queues(aphy->hw);
 445         return 0;
 446 }
 447
 448 int ath9k_wiphy_unpause(struct ath_wiphy *aphy)
 449 {
 450         int ret;
 451         spin_lock_bh(&aphy->sc->wiphy_lock);
 452         ret = __ath9k_wiphy_unpause(aphy);
 453         spin_unlock_bh(&aphy->sc->wiphy_lock);
 454         return ret;
 455 }
 456
 457 static void __ath9k_wiphy_mark_all_paused(struct ath_softc *sc)
 458 {
 459         int i;
 460         if (sc->pri_wiphy->state != ATH_WIPHY_INACTIVE)
 461                 sc->pri_wiphy->state = ATH_WIPHY_PAUSED;
 462         for (i = 0; i < sc->num_sec_wiphy; i++) {
 463                 if (sc->sec_wiphy[i] &&
 464                     sc->sec_wiphy[i]->state != ATH_WIPHY_INACTIVE)
 465                         sc->sec_wiphy[i]->state = ATH_WIPHY_PAUSED;
 466         }
 467 }
 468
 469 /* caller must hold wiphy_lock */
 470 static void __ath9k_wiphy_pause_all(struct ath_softc *sc)
 471 {
 472         int i;
 473         if (sc->pri_wiphy->state == ATH_WIPHY_ACTIVE)
 474                 __ath9k_wiphy_pause(sc->pri_wiphy);
 475         for (i = 0; i < sc->num_sec_wiphy; i++) {
 476                 if (sc->sec_wiphy[i] &&
 477                     sc->sec_wiphy[i]->state == ATH_WIPHY_ACTIVE)
 478                         __ath9k_wiphy_pause(sc->sec_wiphy[i]);
 479         }
 480 }
 481
 482 int ath9k_wiphy_select(struct ath_wiphy *aphy)
 483 {
 484         struct ath_softc *sc = aphy->sc;
 485         bool now;
 486
 487         spin_lock_bh(&sc->wiphy_lock);
 488         if (__ath9k_wiphy_scanning(sc)) {
 489                 /*
 490                  * For now, we are using mac80211 sw scan and it expects to
 491                  * have full control over channel changes, so avoid wiphy
 492                  * scheduling during a scan. This could be optimized if the
 493                  * scanning control were moved into the driver.
 494                  */
 495                 spin_unlock_bh(&sc->wiphy_lock);
 496                 return -EBUSY;
 497         }
 498         if (__ath9k_wiphy_pausing(sc)) {
 499                 if (sc->wiphy_select_failures == 0)
 500                         sc->wiphy_select_first_fail = jiffies;
 501                 sc->wiphy_select_failures++;
 502                 if (time_after(jiffies, sc->wiphy_select_first_fail + HZ / 2))
 503                 {
 504                         printk(KERN_DEBUG "ath9k: Previous wiphy select timed "
 505                                "out; disable/enable hw to recover\n");
 506                         __ath9k_wiphy_mark_all_paused(sc);
 507                         /*
 508                          * TODO: this workaround to fix hardware is unlikely to
 509                          * be specific to virtual wiphy changes. It can happen
 510                          * on normal channel change, too, and as such, this
 511                          * should really be made more generic. For example,
 512                          * tricker radio disable/enable on GTT interrupt burst
 513                          * (say, 10 GTT interrupts received without any TX
 514                          * frame being completed)
 515                          */
 516                         spin_unlock_bh(&sc->wiphy_lock);
 517                         ath_radio_disable(sc);
 518                         ath_radio_enable(sc);
 519                         queue_work(aphy->sc->hw->workqueue,
 520                                    &aphy->sc->chan_work);
 521                         return -EBUSY; /* previous select still in progress */
 522                 }
 523                 spin_unlock_bh(&sc->wiphy_lock);
 524                 return -EBUSY; /* previous select still in progress */
 525         }
 526         sc->wiphy_select_failures = 0;
 527
 528         /* Store the new channel */
 529         sc->chan_idx = aphy->chan_idx;
 530         sc->chan_is_ht = aphy->chan_is_ht;
 531         sc->next_wiphy = aphy;
 532
 533         __ath9k_wiphy_pause_all(sc);
 534         now = !__ath9k_wiphy_pausing(aphy->sc);
 535         spin_unlock_bh(&sc->wiphy_lock);
 536
 537         if (now) {
 538                 /* Ready to request channel change immediately */
 539                 queue_work(aphy->sc->hw->workqueue, &aphy->sc->chan_work);
 540         }
 541
 542         /*
 543          * wiphys will be unpaused in ath9k_tx_status() once channel has been
 544          * changed if any wiphy needs time to become paused.
 545          */
 546
 547         return 0;
 548 }
 549
 550 bool ath9k_wiphy_started(struct ath_softc *sc)
 551 {
 552         int i;
 553         spin_lock_bh(&sc->wiphy_lock);
 554         if (sc->pri_wiphy->state != ATH_WIPHY_INACTIVE) {
 555                 spin_unlock_bh(&sc->wiphy_lock);
 556                 return true;
 557         }
 558         for (i = 0; i < sc->num_sec_wiphy; i++) {
 559                 if (sc->sec_wiphy[i] &&
 560                     sc->sec_wiphy[i]->state != ATH_WIPHY_INACTIVE) {
 561                         spin_unlock_bh(&sc->wiphy_lock);
 562                         return true;
 563                 }
 564         }
 565         spin_unlock_bh(&sc->wiphy_lock);
 566         return false;
 567 }
 568
 569 static void ath9k_wiphy_pause_chan(struct ath_wiphy *aphy,
 570                                    struct ath_wiphy *selected)
 571 {
 572         if (selected->state == ATH_WIPHY_SCAN) {
 573                 if (aphy == selected)
 574                         return;
 575                 /*
 576                  * Pause all other wiphys for the duration of the scan even if
 577                  * they are on the current channel now.
 578                  */
 579         } else if (aphy->chan_idx == selected->chan_idx)
 580                 return;
 581         aphy->state = ATH_WIPHY_PAUSED;
 582         ieee80211_stop_queues(aphy->hw);
 583 }
 584
 585 void ath9k_wiphy_pause_all_forced(struct ath_softc *sc,
 586                                   struct ath_wiphy *selected)
 587 {
 588         int i;
 589         spin_lock_bh(&sc->wiphy_lock);
 590         if (sc->pri_wiphy->state == ATH_WIPHY_ACTIVE)
 591                 ath9k_wiphy_pause_chan(sc->pri_wiphy, selected);
 592         for (i = 0; i < sc->num_sec_wiphy; i++) {
 593                 if (sc->sec_wiphy[i] &&
 594                     sc->sec_wiphy[i]->state == ATH_WIPHY_ACTIVE)
 595                         ath9k_wiphy_pause_chan(sc->sec_wiphy[i], selected);
 596         }
 597         spin_unlock_bh(&sc->wiphy_lock);
 598 }