2 * Copyright (c) 2008 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.
22 * This function will modify certain transmit queue properties depending on
23 * the operating mode of the station (AP or AdHoc). Parameters are AIFS
24 * settings and channel width min/max
26 static int ath_beaconq_config(struct ath_softc *sc)
28 struct ath_hw *ah = sc->sc_ah;
29 struct ath9k_tx_queue_info qi;
31 ath9k_hw_get_txq_props(ah, sc->beacon.beaconq, &qi);
32 if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
33 /* Always burst out beacon and CAB traffic. */
38 /* Adhoc mode; important thing is to use 2x cwmin. */
39 qi.tqi_aifs = sc->beacon.beacon_qi.tqi_aifs;
40 qi.tqi_cwmin = 2*sc->beacon.beacon_qi.tqi_cwmin;
41 qi.tqi_cwmax = sc->beacon.beacon_qi.tqi_cwmax;
44 if (!ath9k_hw_set_txq_props(ah, sc->beacon.beaconq, &qi)) {
45 DPRINTF(sc, ATH_DBG_FATAL,
46 "unable to update h/w beacon queue parameters\n");
49 ath9k_hw_resettxqueue(ah, sc->beacon.beaconq);
55 * Associates the beacon frame buffer with a transmit descriptor. Will set
56 * up all required antenna switch parameters, rate codes, and channel flags.
57 * Beacons are always sent out at the lowest rate, and are not retried.
59 static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
62 struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
63 struct ath_hw *ah = sc->sc_ah;
65 struct ath9k_11n_rate_series series[4];
66 struct ath_rate_table *rt;
67 int flags, antenna, ctsrate = 0, ctsduration = 0;
71 flags = ATH9K_TXDESC_NOACK;
73 if (sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC &&
74 (ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)) {
75 ds->ds_link = bf->bf_daddr; /* self-linked */
76 flags |= ATH9K_TXDESC_VEOL;
77 /* Let hardware handle antenna switching. */
82 * Switch antenna every beacon.
83 * Should only switch every beacon period, not for every SWBA
84 * XXX assumes two antennae
86 antenna = ((sc->beacon.ast_be_xmit / sc->nbcnvifs) & 1 ? 2 : 1);
89 ds->ds_data = bf->bf_buf_addr;
91 rt = sc->cur_rate_table;
92 rate = rt->info[0].ratecode;
93 if (sc->sc_flags & SC_OP_PREAMBLE_SHORT)
94 rate |= rt->info[0].short_preamble;
96 ath9k_hw_set11n_txdesc(ah, ds, skb->len + FCS_LEN,
97 ATH9K_PKT_TYPE_BEACON,
99 ATH9K_TXKEYIX_INVALID,
100 ATH9K_KEY_TYPE_CLEAR,
103 /* NB: beacon's BufLen must be a multiple of 4 bytes */
104 ath9k_hw_filltxdesc(ah, ds, roundup(skb->len, 4),
107 memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4);
109 series[0].Rate = rate;
110 series[0].ChSel = sc->tx_chainmask;
111 series[0].RateFlags = (ctsrate) ? ATH9K_RATESERIES_RTS_CTS : 0;
112 ath9k_hw_set11n_ratescenario(ah, ds, ds, 0, ctsrate, ctsduration,
116 static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
117 struct ieee80211_vif *vif)
119 struct ath_wiphy *aphy = hw->priv;
120 struct ath_softc *sc = aphy->sc;
124 struct ath_txq *cabq;
125 struct ieee80211_tx_info *info;
128 avp = (void *)vif->drv_priv;
129 cabq = sc->beacon.cabq;
131 if (avp->av_bcbuf == NULL) {
132 DPRINTF(sc, ATH_DBG_BEACON, "avp=%p av_bcbuf=%p\n",
137 /* Release the old beacon first */
140 skb = (struct sk_buff *)bf->bf_mpdu;
142 dma_unmap_single(sc->dev, bf->bf_dmacontext,
143 skb->len, DMA_TO_DEVICE);
144 dev_kfree_skb_any(skb);
147 /* Get a new beacon from mac80211 */
149 skb = ieee80211_beacon_get(hw, vif);
154 info = IEEE80211_SKB_CB(skb);
155 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
157 * TODO: make sure the seq# gets assigned properly (vs. other
160 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
161 sc->tx.seq_no += 0x10;
162 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
163 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
166 bf->bf_buf_addr = bf->bf_dmacontext =
167 dma_map_single(sc->dev, skb->data,
168 skb->len, DMA_TO_DEVICE);
169 if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
170 dev_kfree_skb_any(skb);
172 DPRINTF(sc, ATH_DBG_FATAL, "dma_mapping_error on beaconing\n");
176 skb = ieee80211_get_buffered_bc(hw, vif);
179 * if the CABQ traffic from previous DTIM is pending and the current
180 * beacon is also a DTIM.
181 * 1) if there is only one vif let the cab traffic continue.
182 * 2) if there are more than one vif and we are using staggered
183 * beacons, then drain the cabq by dropping all the frames in
184 * the cabq so that the current vifs cab traffic can be scheduled.
186 spin_lock_bh(&cabq->axq_lock);
187 cabq_depth = cabq->axq_depth;
188 spin_unlock_bh(&cabq->axq_lock);
190 if (skb && cabq_depth) {
192 DPRINTF(sc, ATH_DBG_BEACON,
193 "Flushing previous cabq traffic\n");
194 ath_draintxq(sc, cabq, false);
198 ath_beacon_setup(sc, avp, bf);
201 ath_tx_cabq(hw, skb);
202 skb = ieee80211_get_buffered_bc(hw, vif);
209 * Startup beacon transmission for adhoc mode when they are sent entirely
210 * by the hardware using the self-linked descriptor + veol trick.
212 static void ath_beacon_start_adhoc(struct ath_softc *sc,
213 struct ieee80211_vif *vif)
215 struct ath_hw *ah = sc->sc_ah;
220 avp = (void *)vif->drv_priv;
222 if (avp->av_bcbuf == NULL)
226 skb = (struct sk_buff *) bf->bf_mpdu;
228 ath_beacon_setup(sc, avp, bf);
230 /* NB: caller is known to have already stopped tx dma */
231 ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bf->bf_daddr);
232 ath9k_hw_txstart(ah, sc->beacon.beaconq);
233 DPRINTF(sc, ATH_DBG_BEACON, "TXDP%u = %llx (%p)\n",
234 sc->beacon.beaconq, ito64(bf->bf_daddr), bf->bf_desc);
237 int ath_beaconq_setup(struct ath_hw *ah)
239 struct ath9k_tx_queue_info qi;
241 memset(&qi, 0, sizeof(qi));
245 /* NB: don't enable any interrupts */
246 return ath9k_hw_setuptxqueue(ah, ATH9K_TX_QUEUE_BEACON, &qi);
249 int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
251 struct ath_softc *sc = aphy->sc;
253 struct ieee80211_hdr *hdr;
258 avp = (void *)vif->drv_priv;
260 /* Allocate a beacon descriptor if we haven't done so. */
261 if (!avp->av_bcbuf) {
262 /* Allocate beacon state for hostap/ibss. We know
263 * a buffer is available. */
264 avp->av_bcbuf = list_first_entry(&sc->beacon.bbuf,
265 struct ath_buf, list);
266 list_del(&avp->av_bcbuf->list);
268 if (sc->sc_ah->opmode == NL80211_IFTYPE_AP ||
269 !(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)) {
272 * Assign the vif to a beacon xmit slot. As
273 * above, this cannot fail to find one.
276 for (slot = 0; slot < ATH_BCBUF; slot++)
277 if (sc->beacon.bslot[slot] == NULL) {
279 * XXX hack, space out slots to better
282 if (slot+1 < ATH_BCBUF &&
283 sc->beacon.bslot[slot+1] == NULL) {
284 avp->av_bslot = slot+1;
287 avp->av_bslot = slot;
288 /* NB: keep looking for a double slot */
290 BUG_ON(sc->beacon.bslot[avp->av_bslot] != NULL);
291 sc->beacon.bslot[avp->av_bslot] = vif;
292 sc->beacon.bslot_aphy[avp->av_bslot] = aphy;
297 /* release the previous beacon frame, if it already exists. */
299 if (bf->bf_mpdu != NULL) {
300 skb = (struct sk_buff *)bf->bf_mpdu;
301 dma_unmap_single(sc->dev, bf->bf_dmacontext,
302 skb->len, DMA_TO_DEVICE);
303 dev_kfree_skb_any(skb);
307 /* NB: the beacon data buffer must be 32-bit aligned. */
308 skb = ieee80211_beacon_get(sc->hw, vif);
310 DPRINTF(sc, ATH_DBG_BEACON, "cannot get skb\n");
314 tstamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
315 sc->beacon.bc_tstamp = le64_to_cpu(tstamp);
318 * Calculate a TSF adjustment factor required for
319 * staggered beacons. Note that we assume the format
320 * of the beacon frame leaves the tstamp field immediately
321 * following the header.
323 if (avp->av_bslot > 0) {
328 intval = sc->hw->conf.beacon_int ?
329 sc->hw->conf.beacon_int : ATH_DEFAULT_BINTVAL;
332 * The beacon interval is in TU's; the TSF in usecs.
333 * We figure out how many TU's to add to align the
334 * timestamp then convert to TSF units and handle
335 * byte swapping before writing it in the frame.
336 * The hardware will then add this each time a beacon
337 * frame is sent. Note that we align vif's 1..N
338 * and leave vif 0 untouched. This means vap 0
339 * has a timestamp in one beacon interval while the
340 * others get a timestamp aligned to the next interval.
342 tsfadjust = (intval * (ATH_BCBUF - avp->av_bslot)) / ATH_BCBUF;
343 val = cpu_to_le64(tsfadjust << 10); /* TU->TSF */
345 DPRINTF(sc, ATH_DBG_BEACON,
346 "stagger beacons, bslot %d intval %u tsfadjust %llu\n",
347 avp->av_bslot, intval, (unsigned long long)tsfadjust);
349 hdr = (struct ieee80211_hdr *)skb->data;
350 memcpy(&hdr[1], &val, sizeof(val));
354 bf->bf_buf_addr = bf->bf_dmacontext =
355 dma_map_single(sc->dev, skb->data,
356 skb->len, DMA_TO_DEVICE);
357 if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
358 dev_kfree_skb_any(skb);
360 DPRINTF(sc, ATH_DBG_FATAL,
361 "dma_mapping_error on beacon alloc\n");
368 void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp)
370 if (avp->av_bcbuf != NULL) {
373 if (avp->av_bslot != -1) {
374 sc->beacon.bslot[avp->av_bslot] = NULL;
375 sc->beacon.bslot_aphy[avp->av_bslot] = NULL;
380 if (bf->bf_mpdu != NULL) {
381 struct sk_buff *skb = (struct sk_buff *)bf->bf_mpdu;
382 dma_unmap_single(sc->dev, bf->bf_dmacontext,
383 skb->len, DMA_TO_DEVICE);
384 dev_kfree_skb_any(skb);
387 list_add_tail(&bf->list, &sc->beacon.bbuf);
389 avp->av_bcbuf = NULL;
393 void ath_beacon_tasklet(unsigned long data)
395 struct ath_softc *sc = (struct ath_softc *)data;
396 struct ath_hw *ah = sc->sc_ah;
397 struct ath_buf *bf = NULL;
398 struct ieee80211_vif *vif;
399 struct ath_wiphy *aphy;
401 u32 bfaddr, bc = 0, tsftu;
406 * Check if the previous beacon has gone out. If
407 * not don't try to post another, skip this period
408 * and wait for the next. Missed beacons indicate
409 * a problem and should not occur. If we miss too
410 * many consecutive beacons reset the device.
412 if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
413 sc->beacon.bmisscnt++;
415 if (sc->beacon.bmisscnt < BSTUCK_THRESH) {
416 DPRINTF(sc, ATH_DBG_BEACON,
417 "missed %u consecutive beacons\n",
418 sc->beacon.bmisscnt);
419 } else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
420 DPRINTF(sc, ATH_DBG_BEACON,
421 "beacon is officially stuck\n");
422 ath_reset(sc, false);
428 if (sc->beacon.bmisscnt != 0) {
429 DPRINTF(sc, ATH_DBG_BEACON,
430 "resume beacon xmit after %u misses\n",
431 sc->beacon.bmisscnt);
432 sc->beacon.bmisscnt = 0;
436 * Generate beacon frames. we are sending frames
437 * staggered so calculate the slot for this frame based
438 * on the tsf to safeguard against missing an swba.
441 intval = sc->hw->conf.beacon_int ?
442 sc->hw->conf.beacon_int : ATH_DEFAULT_BINTVAL;
444 tsf = ath9k_hw_gettsf64(ah);
445 tsftu = TSF_TO_TU(tsf>>32, tsf);
446 slot = ((tsftu % intval) * ATH_BCBUF) / intval;
447 vif = sc->beacon.bslot[(slot + 1) % ATH_BCBUF];
448 aphy = sc->beacon.bslot_aphy[(slot + 1) % ATH_BCBUF];
450 DPRINTF(sc, ATH_DBG_BEACON,
451 "slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
452 slot, tsf, tsftu, intval, vif);
456 bf = ath_beacon_generate(aphy->hw, vif);
458 bfaddr = bf->bf_daddr;
464 * Handle slot time change when a non-ERP station joins/leaves
465 * an 11g network. The 802.11 layer notifies us via callback,
466 * we mark updateslot, then wait one beacon before effecting
467 * the change. This gives associated stations at least one
468 * beacon interval to note the state change.
470 * NB: The slot time change state machine is clocked according
471 * to whether we are bursting or staggering beacons. We
472 * recognize the request to update and record the current
473 * slot then don't transition until that slot is reached
474 * again. If we miss a beacon for that slot then we'll be
475 * slow to transition but we'll be sure at least one beacon
476 * interval has passed. When bursting slot is always left
477 * set to ATH_BCBUF so this check is a noop.
479 if (sc->beacon.updateslot == UPDATE) {
480 sc->beacon.updateslot = COMMIT; /* commit next beacon */
481 sc->beacon.slotupdate = slot;
482 } else if (sc->beacon.updateslot == COMMIT && sc->beacon.slotupdate == slot) {
483 ath9k_hw_setslottime(sc->sc_ah, sc->beacon.slottime);
484 sc->beacon.updateslot = OK;
488 * Stop any current dma and put the new frame(s) on the queue.
489 * This should never fail since we check above that no frames
490 * are still pending on the queue.
492 if (!ath9k_hw_stoptxdma(ah, sc->beacon.beaconq)) {
493 DPRINTF(sc, ATH_DBG_FATAL,
494 "beacon queue %u did not stop?\n", sc->beacon.beaconq);
497 /* NB: cabq traffic should already be queued and primed */
498 ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
499 ath9k_hw_txstart(ah, sc->beacon.beaconq);
501 sc->beacon.ast_be_xmit += bc; /* XXX per-vif? */
506 * For multi-bss ap support beacons are either staggered evenly over N slots or
507 * burst together. For the former arrange for the SWBA to be delivered for each
508 * slot. Slots that are not occupied will generate nothing.
510 static void ath_beacon_config_ap(struct ath_softc *sc,
511 struct ath_beacon_config *conf,
514 u32 nexttbtt, intval;
516 /* Configure the timers only when the TSF has to be reset */
518 if (!(sc->sc_flags & SC_OP_TSF_RESET))
521 /* NB: the beacon interval is kept internally in TU's */
522 intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
523 intval /= ATH_BCBUF; /* for staggered beacons */
525 intval |= ATH9K_BEACON_RESET_TSF;
528 * In AP mode we enable the beacon timers and SWBA interrupts to
529 * prepare beacon frames.
531 intval |= ATH9K_BEACON_ENA;
532 sc->imask |= ATH9K_INT_SWBA;
533 ath_beaconq_config(sc);
535 /* Set the computed AP beacon timers */
537 ath9k_hw_set_interrupts(sc->sc_ah, 0);
538 ath9k_hw_beaconinit(sc->sc_ah, nexttbtt, intval);
539 sc->beacon.bmisscnt = 0;
540 ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
542 /* Clear the reset TSF flag, so that subsequent beacon updation
543 will not reset the HW TSF. */
545 sc->sc_flags &= ~SC_OP_TSF_RESET;
549 * This sets up the beacon timers according to the timestamp of the last
550 * received beacon and the current TSF, configures PCF and DTIM
551 * handling, programs the sleep registers so the hardware will wakeup in
552 * time to receive beacons, and configures the beacon miss handling so
553 * we'll receive a BMISS interrupt when we stop seeing beacons from the AP
554 * we've associated with.
556 static void ath_beacon_config_sta(struct ath_softc *sc,
557 struct ath_beacon_config *conf,
560 struct ath9k_beacon_state bs;
561 int dtimperiod, dtimcount, sleepduration;
562 int cfpperiod, cfpcount;
563 u32 nexttbtt = 0, intval, tsftu;
566 memset(&bs, 0, sizeof(bs));
567 intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
570 * Setup dtim and cfp parameters according to
571 * last beacon we received (which may be none).
573 dtimperiod = conf->dtim_period;
574 if (dtimperiod <= 0) /* NB: 0 if not known */
576 dtimcount = conf->dtim_count;
577 if (dtimcount >= dtimperiod) /* NB: sanity check */
579 cfpperiod = 1; /* NB: no PCF support yet */
582 sleepduration = conf->listen_interval * intval;
583 if (sleepduration <= 0)
584 sleepduration = intval;
587 * Pull nexttbtt forward to reflect the current
588 * TSF and calculate dtim+cfp state for the result.
590 tsf = ath9k_hw_gettsf64(sc->sc_ah);
591 tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE;
594 if (--dtimcount < 0) {
595 dtimcount = dtimperiod - 1;
597 cfpcount = cfpperiod - 1;
599 } while (nexttbtt < tsftu);
601 bs.bs_intval = intval;
602 bs.bs_nexttbtt = nexttbtt;
603 bs.bs_dtimperiod = dtimperiod*intval;
604 bs.bs_nextdtim = bs.bs_nexttbtt + dtimcount*intval;
605 bs.bs_cfpperiod = cfpperiod*bs.bs_dtimperiod;
606 bs.bs_cfpnext = bs.bs_nextdtim + cfpcount*bs.bs_dtimperiod;
607 bs.bs_cfpmaxduration = 0;
610 * Calculate the number of consecutive beacons to miss* before taking
611 * a BMISS interrupt. The configuration is specified in TU so we only
612 * need calculate based on the beacon interval. Note that we clamp the
613 * result to at most 15 beacons.
615 if (sleepduration > intval) {
616 bs.bs_bmissthreshold = conf->listen_interval *
617 ATH_DEFAULT_BMISS_LIMIT / 2;
619 bs.bs_bmissthreshold = DIV_ROUND_UP(conf->bmiss_timeout, intval);
620 if (bs.bs_bmissthreshold > 15)
621 bs.bs_bmissthreshold = 15;
622 else if (bs.bs_bmissthreshold <= 0)
623 bs.bs_bmissthreshold = 1;
627 * Calculate sleep duration. The configuration is given in ms.
628 * We ensure a multiple of the beacon period is used. Also, if the sleep
629 * duration is greater than the DTIM period then it makes senses
630 * to make it a multiple of that.
635 bs.bs_sleepduration = roundup(IEEE80211_MS_TO_TU(100), sleepduration);
636 if (bs.bs_sleepduration > bs.bs_dtimperiod)
637 bs.bs_sleepduration = bs.bs_dtimperiod;
639 /* TSF out of range threshold fixed at 1 second */
640 bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;
642 DPRINTF(sc, ATH_DBG_BEACON, "tsf: %llu tsftu: %u\n", tsf, tsftu);
643 DPRINTF(sc, ATH_DBG_BEACON,
644 "bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n",
645 bs.bs_bmissthreshold, bs.bs_sleepduration,
646 bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext);
648 /* Set the computed STA beacon timers */
650 ath9k_hw_set_interrupts(sc->sc_ah, 0);
651 ath9k_hw_set_sta_beacon_timers(sc->sc_ah, &bs);
652 sc->imask |= ATH9K_INT_BMISS;
653 ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
656 static void ath_beacon_config_adhoc(struct ath_softc *sc,
657 struct ath_beacon_config *conf,
659 struct ieee80211_vif *vif)
662 u32 tsftu, intval, nexttbtt;
664 intval = conf->beacon_interval & ATH9K_BEACON_PERIOD;
666 /* Pull nexttbtt forward to reflect the current TSF */
668 nexttbtt = TSF_TO_TU(sc->beacon.bc_tstamp >> 32, sc->beacon.bc_tstamp);
672 nexttbtt = roundup(nexttbtt, intval);
674 tsf = ath9k_hw_gettsf64(sc->sc_ah);
675 tsftu = TSF_TO_TU((u32)(tsf>>32), (u32)tsf) + FUDGE;
678 } while (nexttbtt < tsftu);
680 DPRINTF(sc, ATH_DBG_BEACON,
681 "IBSS nexttbtt %u intval %u (%u)\n",
682 nexttbtt, intval, conf->beacon_interval);
685 * In IBSS mode enable the beacon timers but only enable SWBA interrupts
686 * if we need to manually prepare beacon frames. Otherwise we use a
687 * self-linked tx descriptor and let the hardware deal with things.
689 intval |= ATH9K_BEACON_ENA;
690 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_VEOL))
691 sc->imask |= ATH9K_INT_SWBA;
693 ath_beaconq_config(sc);
695 /* Set the computed ADHOC beacon timers */
697 ath9k_hw_set_interrupts(sc->sc_ah, 0);
698 ath9k_hw_beaconinit(sc->sc_ah, nexttbtt, intval);
699 sc->beacon.bmisscnt = 0;
700 ath9k_hw_set_interrupts(sc->sc_ah, sc->imask);
702 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_VEOL)
703 ath_beacon_start_adhoc(sc, vif);
706 void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
708 struct ath_beacon_config conf;
710 /* Setup the beacon configuration parameters */
712 memset(&conf, 0, sizeof(struct ath_beacon_config));
713 conf.beacon_interval = sc->hw->conf.beacon_int ?
714 sc->hw->conf.beacon_int : ATH_DEFAULT_BINTVAL;
715 conf.listen_interval = 1;
716 conf.dtim_period = conf.beacon_interval;
718 conf.bmiss_timeout = ATH_DEFAULT_BMISS_LIMIT * conf.beacon_interval;
721 struct ath_vif *avp = (struct ath_vif *)vif->drv_priv;
723 switch(avp->av_opmode) {
724 case NL80211_IFTYPE_AP:
725 ath_beacon_config_ap(sc, &conf, avp);
727 case NL80211_IFTYPE_ADHOC:
728 ath_beacon_config_adhoc(sc, &conf, avp, vif);
730 case NL80211_IFTYPE_STATION:
731 ath_beacon_config_sta(sc, &conf, avp);
734 DPRINTF(sc, ATH_DBG_CONFIG,
735 "Unsupported beaconing mode\n");
739 sc->sc_flags |= SC_OP_BEACONS;