2 * Copyright (c) 2008-2011 Atheros Communications Inc.
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.
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.
17 #include <linux/dma-mapping.h>
22 static void ath9k_reset_beacon_status(struct ath_softc *sc)
24 sc->beacon.tx_processed = false;
25 sc->beacon.tx_last = false;
29 * This function will modify certain transmit queue properties depending on
30 * the operating mode of the station (AP or AdHoc). Parameters are AIFS
31 * settings and channel width min/max
33 static void ath9k_beaconq_config(struct ath_softc *sc)
35 struct ath_hw *ah = sc->sc_ah;
36 struct ath_common *common = ath9k_hw_common(ah);
37 struct ath9k_tx_queue_info qi, qi_be;
40 ath9k_hw_get_txq_props(ah, sc->beacon.beaconq, &qi);
42 if (sc->sc_ah->opmode == NL80211_IFTYPE_AP ||
43 sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT) {
44 /* Always burst out beacon and CAB traffic. */
49 /* Adhoc mode; important thing is to use 2x cwmin. */
50 txq = sc->tx.txq_map[IEEE80211_AC_BE];
51 ath9k_hw_get_txq_props(ah, txq->axq_qnum, &qi_be);
52 qi.tqi_aifs = qi_be.tqi_aifs;
53 if (ah->slottime == ATH9K_SLOT_TIME_20)
54 qi.tqi_cwmin = 2*qi_be.tqi_cwmin;
56 qi.tqi_cwmin = 4*qi_be.tqi_cwmin;
57 qi.tqi_cwmax = qi_be.tqi_cwmax;
60 if (!ath9k_hw_set_txq_props(ah, sc->beacon.beaconq, &qi)) {
61 ath_err(common, "Unable to update h/w beacon queue parameters\n");
63 ath9k_hw_resettxqueue(ah, sc->beacon.beaconq);
68 * Associates the beacon frame buffer with a transmit descriptor. Will set
69 * up rate codes, and channel flags. Beacons are always sent out at the
70 * lowest rate, and are not retried.
72 static void ath9k_beacon_setup(struct ath_softc *sc, struct ieee80211_vif *vif,
73 struct ath_buf *bf, int rateidx)
75 struct sk_buff *skb = bf->bf_mpdu;
76 struct ath_hw *ah = sc->sc_ah;
77 struct ath_common *common = ath9k_hw_common(ah);
78 struct ath_tx_info info;
79 struct ieee80211_supported_band *sband;
80 u8 chainmask = ah->txchainmask;
83 sband = &common->sbands[sc->cur_chandef.chan->band];
84 rate = sband->bitrates[rateidx].hw_value;
85 if (vif->bss_conf.use_short_preamble)
86 rate |= sband->bitrates[rateidx].hw_value_short;
88 memset(&info, 0, sizeof(info));
89 info.pkt_len = skb->len + FCS_LEN;
90 info.type = ATH9K_PKT_TYPE_BEACON;
91 info.txpower = MAX_RATE_POWER;
92 info.keyix = ATH9K_TXKEYIX_INVALID;
93 info.keytype = ATH9K_KEY_TYPE_CLEAR;
94 info.flags = ATH9K_TXDESC_NOACK | ATH9K_TXDESC_CLRDMASK;
96 info.buf_addr[0] = bf->bf_buf_addr;
97 info.buf_len[0] = roundup(skb->len, 4);
102 info.qcu = sc->beacon.beaconq;
104 info.rates[0].Tries = 1;
105 info.rates[0].Rate = rate;
106 info.rates[0].ChSel = ath_txchainmask_reduction(sc, chainmask, rate);
108 ath9k_hw_set_txdesc(ah, bf->bf_desc, &info);
111 static void ath9k_beacon_add_noa(struct ath_softc *sc, struct ath_vif *avp,
114 static const u8 noa_ie_hdr[] = {
115 WLAN_EID_VENDOR_SPECIFIC, /* type */
117 0x50, 0x6f, 0x9a, /* WFA OUI */
118 0x09, /* P2P subtype */
119 0x0c, /* Notice of Absence */
120 0x00, /* LSB of little-endian len */
121 0x00, /* MSB of little-endian len */
124 struct ieee80211_p2p_noa_attr *noa;
125 int noa_len = 2 + sizeof(struct ieee80211_p2p_noa_desc);
128 if (!avp->offchannel_duration)
131 hdr = skb_put(skb, sizeof(noa_ie_hdr));
132 memcpy(hdr, noa_ie_hdr, sizeof(noa_ie_hdr));
133 hdr[1] = sizeof(noa_ie_hdr) + noa_len - 2;
136 noa = (void *) skb_put(skb, noa_len);
137 memset(noa, 0, noa_len);
139 noa->index = avp->noa_index;
140 noa->desc[0].count = 1;
141 noa->desc[0].duration = cpu_to_le32(avp->offchannel_duration);
142 noa->desc[0].start_time = cpu_to_le32(avp->offchannel_start);
145 static struct ath_buf *ath9k_beacon_generate(struct ieee80211_hw *hw,
146 struct ieee80211_vif *vif)
148 struct ath_softc *sc = hw->priv;
149 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
151 struct ath_vif *avp = (void *)vif->drv_priv;
153 struct ath_txq *cabq = sc->beacon.cabq;
154 struct ieee80211_tx_info *info;
155 struct ieee80211_mgmt *mgmt_hdr;
158 if (avp->av_bcbuf == NULL)
164 dma_unmap_single(sc->dev, bf->bf_buf_addr,
165 skb->len, DMA_TO_DEVICE);
166 dev_kfree_skb_any(skb);
171 skb = ieee80211_beacon_get(hw, vif);
177 mgmt_hdr = (struct ieee80211_mgmt *)skb->data;
178 mgmt_hdr->u.beacon.timestamp = avp->tsf_adjust;
180 info = IEEE80211_SKB_CB(skb);
181 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
183 * TODO: make sure the seq# gets assigned properly (vs. other
186 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
187 sc->tx.seq_no += 0x10;
188 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
189 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
193 ath9k_beacon_add_noa(sc, avp, skb);
195 bf->bf_buf_addr = dma_map_single(sc->dev, skb->data,
196 skb->len, DMA_TO_DEVICE);
197 if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
198 dev_kfree_skb_any(skb);
201 ath_err(common, "dma_mapping_error on beaconing\n");
205 skb = ieee80211_get_buffered_bc(hw, vif);
208 * if the CABQ traffic from previous DTIM is pending and the current
209 * beacon is also a DTIM.
210 * 1) if there is only one vif let the cab traffic continue.
211 * 2) if there are more than one vif and we are using staggered
212 * beacons, then drain the cabq by dropping all the frames in
213 * the cabq so that the current vifs cab traffic can be scheduled.
215 spin_lock_bh(&cabq->axq_lock);
216 cabq_depth = cabq->axq_depth;
217 spin_unlock_bh(&cabq->axq_lock);
219 if (skb && cabq_depth) {
221 ath_dbg(common, BEACON,
222 "Flushing previous cabq traffic\n");
223 ath_draintxq(sc, cabq);
227 ath9k_beacon_setup(sc, vif, bf, info->control.rates[0].idx);
230 ath_tx_cabq(hw, vif, skb);
235 void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif)
237 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
238 struct ath_vif *avp = (void *)vif->drv_priv;
241 avp->av_bcbuf = list_first_entry(&sc->beacon.bbuf, struct ath_buf, list);
242 list_del(&avp->av_bcbuf->list);
244 for (slot = 0; slot < ATH_BCBUF; slot++) {
245 if (sc->beacon.bslot[slot] == NULL) {
246 avp->av_bslot = slot;
251 sc->beacon.bslot[avp->av_bslot] = vif;
254 ath_dbg(common, CONFIG, "Added interface at beacon slot: %d\n",
258 void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif)
260 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
261 struct ath_vif *avp = (void *)vif->drv_priv;
262 struct ath_buf *bf = avp->av_bcbuf;
264 ath_dbg(common, CONFIG, "Removing interface at beacon slot: %d\n",
267 tasklet_disable(&sc->bcon_tasklet);
269 if (bf && bf->bf_mpdu) {
270 struct sk_buff *skb = bf->bf_mpdu;
271 dma_unmap_single(sc->dev, bf->bf_buf_addr,
272 skb->len, DMA_TO_DEVICE);
273 dev_kfree_skb_any(skb);
278 avp->av_bcbuf = NULL;
279 sc->beacon.bslot[avp->av_bslot] = NULL;
281 list_add_tail(&bf->list, &sc->beacon.bbuf);
283 tasklet_enable(&sc->bcon_tasklet);
286 static int ath9k_beacon_choose_slot(struct ath_softc *sc)
288 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
289 struct ath_beacon_config *cur_conf = &sc->cur_chan->beacon;
295 if (sc->sc_ah->opmode != NL80211_IFTYPE_AP &&
296 sc->sc_ah->opmode != NL80211_IFTYPE_MESH_POINT) {
297 ath_dbg(common, BEACON, "slot 0, tsf: %llu\n",
298 ath9k_hw_gettsf64(sc->sc_ah));
302 intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
303 tsf = ath9k_hw_gettsf64(sc->sc_ah);
304 tsf += TU_TO_USEC(sc->sc_ah->config.sw_beacon_response_time);
305 tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
306 slot = (tsftu % (intval * ATH_BCBUF)) / intval;
308 ath_dbg(common, BEACON, "slot: %d tsf: %llu tsftu: %u\n",
309 slot, tsf, tsftu / ATH_BCBUF);
314 static void ath9k_set_tsfadjust(struct ath_softc *sc, struct ieee80211_vif *vif)
316 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
317 struct ath_vif *avp = (void *)vif->drv_priv;
318 struct ath_beacon_config *cur_conf = &avp->chanctx->beacon;
321 if (avp->av_bslot == 0)
324 tsfadjust = cur_conf->beacon_interval * avp->av_bslot;
325 tsfadjust = TU_TO_USEC(tsfadjust) / ATH_BCBUF;
326 avp->tsf_adjust = cpu_to_le64(tsfadjust);
328 ath_dbg(common, CONFIG, "tsfadjust is: %llu for bslot: %d\n",
329 (unsigned long long)tsfadjust, avp->av_bslot);
332 bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif)
334 if (!vif || !vif->csa_active)
337 if (!ieee80211_csa_is_complete(vif))
340 ieee80211_csa_finish(vif);
344 static void ath9k_csa_update_vif(void *data, u8 *mac, struct ieee80211_vif *vif)
346 struct ath_softc *sc = data;
347 ath9k_csa_is_finished(sc, vif);
350 void ath9k_csa_update(struct ath_softc *sc)
352 ieee80211_iterate_active_interfaces_atomic(sc->hw,
353 IEEE80211_IFACE_ITER_NORMAL,
354 ath9k_csa_update_vif, sc);
357 void ath9k_beacon_tasklet(unsigned long data)
359 struct ath_softc *sc = (struct ath_softc *)data;
360 struct ath_hw *ah = sc->sc_ah;
361 struct ath_common *common = ath9k_hw_common(ah);
362 struct ath_buf *bf = NULL;
363 struct ieee80211_vif *vif;
364 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
367 if (test_bit(ATH_OP_HW_RESET, &common->op_flags)) {
368 ath_dbg(common, RESET,
369 "reset work is pending, skip beaconing now\n");
374 * Check if the previous beacon has gone out. If
375 * not don't try to post another, skip this period
376 * and wait for the next. Missed beacons indicate
377 * a problem and should not occur. If we miss too
378 * many consecutive beacons reset the device.
380 if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
381 sc->beacon.bmisscnt++;
383 ath9k_hw_check_nav(ah);
386 * If the previous beacon has not been transmitted
387 * and a MAC/BB hang has been identified, return
388 * here because a chip reset would have been
391 if (!ath_hw_check(sc))
394 if (sc->beacon.bmisscnt < BSTUCK_THRESH * sc->nbcnvifs) {
395 ath_dbg(common, BSTUCK,
396 "missed %u consecutive beacons\n",
397 sc->beacon.bmisscnt);
398 ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
399 if (sc->beacon.bmisscnt > 3)
400 ath9k_hw_bstuck_nfcal(ah);
401 } else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
402 ath_dbg(common, BSTUCK, "beacon is officially stuck\n");
403 sc->beacon.bmisscnt = 0;
404 ath9k_queue_reset(sc, RESET_TYPE_BEACON_STUCK);
410 slot = ath9k_beacon_choose_slot(sc);
411 vif = sc->beacon.bslot[slot];
413 /* EDMA devices check that in the tx completion function. */
415 if (sc->sched.beacon_pending)
416 ath_chanctx_event(sc, NULL,
417 ATH_CHANCTX_EVENT_BEACON_SENT);
419 if (ath9k_csa_is_finished(sc, vif))
423 if (!vif || !vif->bss_conf.enable_beacon)
426 ath_chanctx_event(sc, vif, ATH_CHANCTX_EVENT_BEACON_PREPARE);
427 bf = ath9k_beacon_generate(sc->hw, vif);
429 if (sc->beacon.bmisscnt != 0) {
430 ath_dbg(common, BSTUCK, "resume beacon xmit after %u misses\n",
431 sc->beacon.bmisscnt);
432 sc->beacon.bmisscnt = 0;
436 * Handle slot time change when a non-ERP station joins/leaves
437 * an 11g network. The 802.11 layer notifies us via callback,
438 * we mark updateslot, then wait one beacon before effecting
439 * the change. This gives associated stations at least one
440 * beacon interval to note the state change.
442 * NB: The slot time change state machine is clocked according
443 * to whether we are bursting or staggering beacons. We
444 * recognize the request to update and record the current
445 * slot then don't transition until that slot is reached
446 * again. If we miss a beacon for that slot then we'll be
447 * slow to transition but we'll be sure at least one beacon
448 * interval has passed. When bursting slot is always left
449 * set to ATH_BCBUF so this check is a noop.
451 if (sc->beacon.updateslot == UPDATE) {
452 sc->beacon.updateslot = COMMIT;
453 sc->beacon.slotupdate = slot;
454 } else if (sc->beacon.updateslot == COMMIT &&
455 sc->beacon.slotupdate == slot) {
456 ah->slottime = sc->beacon.slottime;
457 ath9k_hw_init_global_settings(ah);
458 sc->beacon.updateslot = OK;
462 ath9k_reset_beacon_status(sc);
464 ath_dbg(common, BEACON,
465 "Transmitting beacon for slot: %d\n", slot);
467 /* NB: cabq traffic should already be queued and primed */
468 ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bf->bf_daddr);
471 ath9k_hw_txstart(ah, sc->beacon.beaconq);
476 * Both nexttbtt and intval have to be in usecs.
478 static void ath9k_beacon_init(struct ath_softc *sc, u32 nexttbtt,
479 u32 intval, bool reset_tsf)
481 struct ath_hw *ah = sc->sc_ah;
483 ath9k_hw_disable_interrupts(ah);
485 ath9k_hw_reset_tsf(ah);
486 ath9k_beaconq_config(sc);
487 ath9k_hw_beaconinit(ah, nexttbtt, intval);
488 sc->beacon.bmisscnt = 0;
489 ath9k_hw_set_interrupts(ah);
490 ath9k_hw_enable_interrupts(ah);
494 * For multi-bss ap support beacons are either staggered evenly over N slots or
495 * burst together. For the former arrange for the SWBA to be delivered for each
496 * slot. Slots that are not occupied will generate nothing.
498 static void ath9k_beacon_config_ap(struct ath_softc *sc,
499 struct ath_beacon_config *conf)
501 struct ath_hw *ah = sc->sc_ah;
503 ath9k_cmn_beacon_config_ap(ah, conf, ATH_BCBUF);
504 ath9k_beacon_init(sc, conf->nexttbtt, conf->intval, false);
507 static void ath9k_beacon_config_sta(struct ath_hw *ah,
508 struct ath_beacon_config *conf)
510 struct ath9k_beacon_state bs;
512 if (ath9k_cmn_beacon_config_sta(ah, conf, &bs) == -EPERM)
515 ath9k_hw_disable_interrupts(ah);
516 ath9k_hw_set_sta_beacon_timers(ah, &bs);
517 ah->imask |= ATH9K_INT_BMISS;
519 ath9k_hw_set_interrupts(ah);
520 ath9k_hw_enable_interrupts(ah);
523 static void ath9k_beacon_config_adhoc(struct ath_softc *sc,
524 struct ath_beacon_config *conf)
526 struct ath_hw *ah = sc->sc_ah;
527 struct ath_common *common = ath9k_hw_common(ah);
529 ath9k_reset_beacon_status(sc);
531 ath9k_cmn_beacon_config_adhoc(ah, conf);
533 ath9k_beacon_init(sc, conf->nexttbtt, conf->intval, conf->ibss_creator);
536 * Set the global 'beacon has been configured' flag for the
537 * joiner case in IBSS mode.
539 if (!conf->ibss_creator && conf->enable_beacon)
540 set_bit(ATH_OP_BEACONS, &common->op_flags);
543 static bool ath9k_allow_beacon_config(struct ath_softc *sc,
544 struct ieee80211_vif *vif)
546 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
548 if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
549 if ((vif->type != NL80211_IFTYPE_AP) ||
550 (sc->nbcnvifs > 1)) {
551 ath_dbg(common, CONFIG,
552 "An AP interface is already present !\n");
557 if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION) {
558 if ((vif->type == NL80211_IFTYPE_STATION) &&
559 test_bit(ATH_OP_BEACONS, &common->op_flags) &&
560 vif != sc->cur_chan->primary_sta) {
561 ath_dbg(common, CONFIG,
562 "Beacon already configured for a station interface\n");
570 static void ath9k_cache_beacon_config(struct ath_softc *sc,
571 struct ath_chanctx *ctx,
572 struct ieee80211_bss_conf *bss_conf)
574 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
575 struct ath_beacon_config *cur_conf = &ctx->beacon;
577 ath_dbg(common, BEACON,
578 "Caching beacon data for BSS: %pM\n", bss_conf->bssid);
580 cur_conf->beacon_interval = bss_conf->beacon_int;
581 cur_conf->dtim_period = bss_conf->dtim_period;
582 cur_conf->dtim_count = 1;
583 cur_conf->ibss_creator = bss_conf->ibss_creator;
586 * It looks like mac80211 may end up using beacon interval of zero in
587 * some cases (at least for mesh point). Avoid getting into an
588 * infinite loop by using a bit safer value instead. To be safe,
589 * do sanity check on beacon interval for all operating modes.
591 if (cur_conf->beacon_interval == 0)
592 cur_conf->beacon_interval = 100;
594 cur_conf->bmiss_timeout =
595 ATH_DEFAULT_BMISS_LIMIT * cur_conf->beacon_interval;
598 * We don't parse dtim period from mac80211 during the driver
599 * initialization as it breaks association with hidden-ssid
600 * AP and it causes latency in roaming
602 if (cur_conf->dtim_period == 0)
603 cur_conf->dtim_period = 1;
607 void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
610 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
611 struct ath_hw *ah = sc->sc_ah;
612 struct ath_common *common = ath9k_hw_common(ah);
613 struct ath_vif *avp = (void *)vif->drv_priv;
614 struct ath_chanctx *ctx = avp->chanctx;
615 struct ath_beacon_config *cur_conf;
617 bool skip_beacon = false;
622 cur_conf = &avp->chanctx->beacon;
623 if (vif->type == NL80211_IFTYPE_AP)
624 ath9k_set_tsfadjust(sc, vif);
626 if (!ath9k_allow_beacon_config(sc, vif))
629 if (vif->type == NL80211_IFTYPE_STATION) {
630 ath9k_cache_beacon_config(sc, ctx, bss_conf);
631 if (ctx != sc->cur_chan)
634 ath9k_set_beacon(sc);
635 set_bit(ATH_OP_BEACONS, &common->op_flags);
640 * Take care of multiple interfaces when
641 * enabling/disabling SWBA.
643 if (changed & BSS_CHANGED_BEACON_ENABLED) {
644 if (!bss_conf->enable_beacon &&
645 (sc->nbcnvifs <= 1)) {
646 cur_conf->enable_beacon = false;
647 } else if (bss_conf->enable_beacon) {
648 cur_conf->enable_beacon = true;
649 ath9k_cache_beacon_config(sc, ctx, bss_conf);
653 if (ctx != sc->cur_chan)
657 * Configure the HW beacon registers only when we have a valid
660 if (cur_conf->beacon_interval) {
662 * If we are joining an existing IBSS network, start beaconing
663 * only after a TSF-sync has taken place. Ensure that this
664 * happens by setting the appropriate flags.
666 if ((changed & BSS_CHANGED_IBSS) && !bss_conf->ibss_creator &&
667 bss_conf->enable_beacon) {
668 spin_lock_irqsave(&sc->sc_pm_lock, flags);
669 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
670 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
673 ath9k_set_beacon(sc);
677 * Do not set the ATH_OP_BEACONS flag for IBSS joiner mode
678 * here, it is done in ath9k_beacon_config_adhoc().
680 if (cur_conf->enable_beacon && !skip_beacon)
681 set_bit(ATH_OP_BEACONS, &common->op_flags);
683 clear_bit(ATH_OP_BEACONS, &common->op_flags);
687 void ath9k_set_beacon(struct ath_softc *sc)
689 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
690 struct ath_beacon_config *cur_conf = &sc->cur_chan->beacon;
692 switch (sc->sc_ah->opmode) {
693 case NL80211_IFTYPE_AP:
694 case NL80211_IFTYPE_MESH_POINT:
695 ath9k_beacon_config_ap(sc, cur_conf);
697 case NL80211_IFTYPE_ADHOC:
698 ath9k_beacon_config_adhoc(sc, cur_conf);
700 case NL80211_IFTYPE_STATION:
701 ath9k_beacon_config_sta(sc->sc_ah, cur_conf);
704 ath_dbg(common, CONFIG, "Unsupported beaconing mode\n");