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17#include <linux/dma-mapping.h>
18#include "ath9k.h"
19
20#define FUDGE 2
21
22static void ath9k_reset_beacon_status(struct ath_softc *sc)
23{
24 sc->beacon.tx_processed = false;
25 sc->beacon.tx_last = false;
26}
27
28
29
30
31
32
33static void ath9k_beaconq_config(struct ath_softc *sc)
34{
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;
38 struct ath_txq *txq;
39
40 ath9k_hw_get_txq_props(ah, sc->beacon.beaconq, &qi);
41
42 if (sc->sc_ah->opmode == NL80211_IFTYPE_AP ||
43 sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT) {
44
45 qi.tqi_aifs = 1;
46 qi.tqi_cwmin = 0;
47 qi.tqi_cwmax = 0;
48 } else {
49
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;
55 else
56 qi.tqi_cwmin = 4*qi_be.tqi_cwmin;
57 qi.tqi_cwmax = qi_be.tqi_cwmax;
58 }
59
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");
62 } else {
63 ath9k_hw_resettxqueue(ah, sc->beacon.beaconq);
64 }
65}
66
67
68
69
70
71
72static void ath9k_beacon_setup(struct ath_softc *sc, struct ieee80211_vif *vif,
73 struct ath_buf *bf, int rateidx)
74{
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;
81 u8 rate = 0;
82
83 sband = &sc->sbands[common->hw->conf.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;
87
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;
95
96 info.buf_addr[0] = bf->bf_buf_addr;
97 info.buf_len[0] = roundup(skb->len, 4);
98
99 info.is_first = true;
100 info.is_last = true;
101
102 info.qcu = sc->beacon.beaconq;
103
104 info.rates[0].Tries = 1;
105 info.rates[0].Rate = rate;
106 info.rates[0].ChSel = ath_txchainmask_reduction(sc, chainmask, rate);
107
108 ath9k_hw_set_txdesc(ah, bf->bf_desc, &info);
109}
110
111static struct ath_buf *ath9k_beacon_generate(struct ieee80211_hw *hw,
112 struct ieee80211_vif *vif)
113{
114 struct ath_softc *sc = hw->priv;
115 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
116 struct ath_buf *bf;
117 struct ath_vif *avp = (void *)vif->drv_priv;
118 struct sk_buff *skb;
119 struct ath_txq *cabq = sc->beacon.cabq;
120 struct ieee80211_tx_info *info;
121 struct ieee80211_mgmt *mgmt_hdr;
122 int cabq_depth;
123
124 if (avp->av_bcbuf == NULL)
125 return NULL;
126
127 bf = avp->av_bcbuf;
128 skb = bf->bf_mpdu;
129 if (skb) {
130 dma_unmap_single(sc->dev, bf->bf_buf_addr,
131 skb->len, DMA_TO_DEVICE);
132 dev_kfree_skb_any(skb);
133 bf->bf_buf_addr = 0;
134 bf->bf_mpdu = NULL;
135 }
136
137 skb = ieee80211_beacon_get(hw, vif);
138 if (skb == NULL)
139 return NULL;
140
141 bf->bf_mpdu = skb;
142
143 mgmt_hdr = (struct ieee80211_mgmt *)skb->data;
144 mgmt_hdr->u.beacon.timestamp = avp->tsf_adjust;
145
146 info = IEEE80211_SKB_CB(skb);
147 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
148
149
150
151
152 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
153 sc->tx.seq_no += 0x10;
154 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
155 hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
156 }
157
158 bf->bf_buf_addr = dma_map_single(sc->dev, skb->data,
159 skb->len, DMA_TO_DEVICE);
160 if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
161 dev_kfree_skb_any(skb);
162 bf->bf_mpdu = NULL;
163 bf->bf_buf_addr = 0;
164 ath_err(common, "dma_mapping_error on beaconing\n");
165 return NULL;
166 }
167
168 skb = ieee80211_get_buffered_bc(hw, vif);
169
170
171
172
173
174
175
176
177
178 spin_lock_bh(&cabq->axq_lock);
179 cabq_depth = cabq->axq_depth;
180 spin_unlock_bh(&cabq->axq_lock);
181
182 if (skb && cabq_depth) {
183 if (sc->nvifs > 1) {
184 ath_dbg(common, BEACON,
185 "Flushing previous cabq traffic\n");
186 ath_draintxq(sc, cabq);
187 }
188 }
189
190 ath9k_beacon_setup(sc, vif, bf, info->control.rates[0].idx);
191
192 if (skb)
193 ath_tx_cabq(hw, vif, skb);
194
195 return bf;
196}
197
198void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif)
199{
200 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
201 struct ath_vif *avp = (void *)vif->drv_priv;
202 int slot;
203
204 avp->av_bcbuf = list_first_entry(&sc->beacon.bbuf, struct ath_buf, list);
205 list_del(&avp->av_bcbuf->list);
206
207 for (slot = 0; slot < ATH_BCBUF; slot++) {
208 if (sc->beacon.bslot[slot] == NULL) {
209 avp->av_bslot = slot;
210 break;
211 }
212 }
213
214 sc->beacon.bslot[avp->av_bslot] = vif;
215 sc->nbcnvifs++;
216
217 ath_dbg(common, CONFIG, "Added interface at beacon slot: %d\n",
218 avp->av_bslot);
219}
220
221void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif)
222{
223 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
224 struct ath_vif *avp = (void *)vif->drv_priv;
225 struct ath_buf *bf = avp->av_bcbuf;
226
227 ath_dbg(common, CONFIG, "Removing interface at beacon slot: %d\n",
228 avp->av_bslot);
229
230 tasklet_disable(&sc->bcon_tasklet);
231
232 if (bf && bf->bf_mpdu) {
233 struct sk_buff *skb = bf->bf_mpdu;
234 dma_unmap_single(sc->dev, bf->bf_buf_addr,
235 skb->len, DMA_TO_DEVICE);
236 dev_kfree_skb_any(skb);
237 bf->bf_mpdu = NULL;
238 bf->bf_buf_addr = 0;
239 }
240
241 avp->av_bcbuf = NULL;
242 sc->beacon.bslot[avp->av_bslot] = NULL;
243 sc->nbcnvifs--;
244 list_add_tail(&bf->list, &sc->beacon.bbuf);
245
246 tasklet_enable(&sc->bcon_tasklet);
247}
248
249static int ath9k_beacon_choose_slot(struct ath_softc *sc)
250{
251 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
252 struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
253 u16 intval;
254 u32 tsftu;
255 u64 tsf;
256 int slot;
257
258 if (sc->sc_ah->opmode != NL80211_IFTYPE_AP &&
259 sc->sc_ah->opmode != NL80211_IFTYPE_MESH_POINT) {
260 ath_dbg(common, BEACON, "slot 0, tsf: %llu\n",
261 ath9k_hw_gettsf64(sc->sc_ah));
262 return 0;
263 }
264
265 intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
266 tsf = ath9k_hw_gettsf64(sc->sc_ah);
267 tsf += TU_TO_USEC(sc->sc_ah->config.sw_beacon_response_time);
268 tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
269 slot = (tsftu % (intval * ATH_BCBUF)) / intval;
270
271 ath_dbg(common, BEACON, "slot: %d tsf: %llu tsftu: %u\n",
272 slot, tsf, tsftu / ATH_BCBUF);
273
274 return slot;
275}
276
277void ath9k_set_tsfadjust(struct ath_softc *sc, struct ieee80211_vif *vif)
278{
279 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
280 struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
281 struct ath_vif *avp = (void *)vif->drv_priv;
282 u64 tsfadjust;
283
284 if (avp->av_bslot == 0)
285 return;
286
287 tsfadjust = cur_conf->beacon_interval * avp->av_bslot / ATH_BCBUF;
288 avp->tsf_adjust = cpu_to_le64(TU_TO_USEC(tsfadjust));
289
290 ath_dbg(common, CONFIG, "tsfadjust is: %llu for bslot: %d\n",
291 (unsigned long long)tsfadjust, avp->av_bslot);
292}
293
294bool ath9k_csa_is_finished(struct ath_softc *sc)
295{
296 struct ieee80211_vif *vif;
297
298 vif = sc->csa_vif;
299 if (!vif || !vif->csa_active)
300 return false;
301
302 if (!ieee80211_csa_is_complete(vif))
303 return false;
304
305 ieee80211_csa_finish(vif);
306
307 sc->csa_vif = NULL;
308 return true;
309}
310
311void ath9k_beacon_tasklet(unsigned long data)
312{
313 struct ath_softc *sc = (struct ath_softc *)data;
314 struct ath_hw *ah = sc->sc_ah;
315 struct ath_common *common = ath9k_hw_common(ah);
316 struct ath_buf *bf = NULL;
317 struct ieee80211_vif *vif;
318 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
319 int slot;
320
321 if (test_bit(SC_OP_HW_RESET, &sc->sc_flags)) {
322 ath_dbg(common, RESET,
323 "reset work is pending, skip beaconing now\n");
324 return;
325 }
326
327
328
329
330
331
332
333
334 if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0) {
335 sc->beacon.bmisscnt++;
336
337 if (!ath9k_hw_check_alive(ah))
338 ieee80211_queue_work(sc->hw, &sc->hw_check_work);
339
340 if (sc->beacon.bmisscnt < BSTUCK_THRESH * sc->nbcnvifs) {
341 ath_dbg(common, BSTUCK,
342 "missed %u consecutive beacons\n",
343 sc->beacon.bmisscnt);
344 ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
345 if (sc->beacon.bmisscnt > 3)
346 ath9k_hw_bstuck_nfcal(ah);
347 } else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
348 ath_dbg(common, BSTUCK, "beacon is officially stuck\n");
349 sc->beacon.bmisscnt = 0;
350 ath9k_queue_reset(sc, RESET_TYPE_BEACON_STUCK);
351 }
352
353 return;
354 }
355
356
357 if (!edma && ath9k_csa_is_finished(sc))
358 return;
359
360 slot = ath9k_beacon_choose_slot(sc);
361 vif = sc->beacon.bslot[slot];
362
363 if (!vif || !vif->bss_conf.enable_beacon)
364 return;
365
366 bf = ath9k_beacon_generate(sc->hw, vif);
367
368 if (sc->beacon.bmisscnt != 0) {
369 ath_dbg(common, BSTUCK, "resume beacon xmit after %u misses\n",
370 sc->beacon.bmisscnt);
371 sc->beacon.bmisscnt = 0;
372 }
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390 if (sc->beacon.updateslot == UPDATE) {
391 sc->beacon.updateslot = COMMIT;
392 sc->beacon.slotupdate = slot;
393 } else if (sc->beacon.updateslot == COMMIT &&
394 sc->beacon.slotupdate == slot) {
395 ah->slottime = sc->beacon.slottime;
396 ath9k_hw_init_global_settings(ah);
397 sc->beacon.updateslot = OK;
398 }
399
400 if (bf) {
401 ath9k_reset_beacon_status(sc);
402
403 ath_dbg(common, BEACON,
404 "Transmitting beacon for slot: %d\n", slot);
405
406
407 ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bf->bf_daddr);
408
409 if (!edma)
410 ath9k_hw_txstart(ah, sc->beacon.beaconq);
411 }
412}
413
414
415
416
417static void ath9k_beacon_init(struct ath_softc *sc, u32 nexttbtt,
418 u32 intval, bool reset_tsf)
419{
420 struct ath_hw *ah = sc->sc_ah;
421
422 ath9k_hw_disable_interrupts(ah);
423 if (reset_tsf)
424 ath9k_hw_reset_tsf(ah);
425 ath9k_beaconq_config(sc);
426 ath9k_hw_beaconinit(ah, nexttbtt, intval);
427 sc->beacon.bmisscnt = 0;
428 ath9k_hw_set_interrupts(ah);
429 ath9k_hw_enable_interrupts(ah);
430}
431
432
433
434
435
436
437static void ath9k_beacon_config_ap(struct ath_softc *sc,
438 struct ath_beacon_config *conf)
439{
440 struct ath_hw *ah = sc->sc_ah;
441 struct ath_common *common = ath9k_hw_common(ah);
442 u32 nexttbtt, intval;
443
444
445 intval = TU_TO_USEC(conf->beacon_interval);
446 intval /= ATH_BCBUF;
447 nexttbtt = intval;
448
449 if (conf->enable_beacon)
450 ah->imask |= ATH9K_INT_SWBA;
451 else
452 ah->imask &= ~ATH9K_INT_SWBA;
453
454 ath_dbg(common, BEACON,
455 "AP (%s) nexttbtt: %u intval: %u conf_intval: %u\n",
456 (conf->enable_beacon) ? "Enable" : "Disable",
457 nexttbtt, intval, conf->beacon_interval);
458
459 ath9k_beacon_init(sc, nexttbtt, intval, true);
460}
461
462
463
464
465
466
467
468
469
470static void ath9k_beacon_config_sta(struct ath_softc *sc,
471 struct ath_beacon_config *conf)
472{
473 struct ath_hw *ah = sc->sc_ah;
474 struct ath_common *common = ath9k_hw_common(ah);
475 struct ath9k_beacon_state bs;
476 int dtimperiod, dtimcount, sleepduration;
477 int cfpperiod, cfpcount;
478 u32 nexttbtt = 0, intval, tsftu;
479 u64 tsf;
480 int num_beacons, offset, dtim_dec_count, cfp_dec_count;
481
482
483 if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
484 ath_dbg(common, BEACON,
485 "STA is not yet associated..skipping beacon config\n");
486 return;
487 }
488
489 memset(&bs, 0, sizeof(bs));
490 intval = conf->beacon_interval;
491
492
493
494
495
496 dtimperiod = conf->dtim_period;
497 dtimcount = conf->dtim_count;
498 if (dtimcount >= dtimperiod)
499 dtimcount = 0;
500 cfpperiod = 1;
501 cfpcount = 0;
502
503 sleepduration = conf->listen_interval * intval;
504
505
506
507
508
509 tsf = ath9k_hw_gettsf64(ah);
510 tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE;
511
512 num_beacons = tsftu / intval + 1;
513 offset = tsftu % intval;
514 nexttbtt = tsftu - offset;
515 if (offset)
516 nexttbtt += intval;
517
518
519 dtim_dec_count = num_beacons % dtimperiod;
520
521 cfp_dec_count = (num_beacons / dtimperiod) % cfpperiod;
522 if (dtim_dec_count)
523 cfp_dec_count++;
524
525 dtimcount -= dtim_dec_count;
526 if (dtimcount < 0)
527 dtimcount += dtimperiod;
528
529 cfpcount -= cfp_dec_count;
530 if (cfpcount < 0)
531 cfpcount += cfpperiod;
532
533 bs.bs_intval = intval;
534 bs.bs_nexttbtt = nexttbtt;
535 bs.bs_dtimperiod = dtimperiod*intval;
536 bs.bs_nextdtim = bs.bs_nexttbtt + dtimcount*intval;
537 bs.bs_cfpperiod = cfpperiod*bs.bs_dtimperiod;
538 bs.bs_cfpnext = bs.bs_nextdtim + cfpcount*bs.bs_dtimperiod;
539 bs.bs_cfpmaxduration = 0;
540
541
542
543
544
545
546
547 if (sleepduration > intval) {
548 bs.bs_bmissthreshold = conf->listen_interval *
549 ATH_DEFAULT_BMISS_LIMIT / 2;
550 } else {
551 bs.bs_bmissthreshold = DIV_ROUND_UP(conf->bmiss_timeout, intval);
552 if (bs.bs_bmissthreshold > 15)
553 bs.bs_bmissthreshold = 15;
554 else if (bs.bs_bmissthreshold <= 0)
555 bs.bs_bmissthreshold = 1;
556 }
557
558
559
560
561
562
563
564
565
566
567 bs.bs_sleepduration = roundup(IEEE80211_MS_TO_TU(100), sleepduration);
568 if (bs.bs_sleepduration > bs.bs_dtimperiod)
569 bs.bs_sleepduration = bs.bs_dtimperiod;
570
571
572 bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;
573
574 ath_dbg(common, BEACON, "tsf: %llu tsftu: %u\n", tsf, tsftu);
575 ath_dbg(common, BEACON,
576 "bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n",
577 bs.bs_bmissthreshold, bs.bs_sleepduration,
578 bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext);
579
580
581
582 ath9k_hw_disable_interrupts(ah);
583 ath9k_hw_set_sta_beacon_timers(ah, &bs);
584 ah->imask |= ATH9K_INT_BMISS;
585
586 ath9k_hw_set_interrupts(ah);
587 ath9k_hw_enable_interrupts(ah);
588}
589
590static void ath9k_beacon_config_adhoc(struct ath_softc *sc,
591 struct ath_beacon_config *conf)
592{
593 struct ath_hw *ah = sc->sc_ah;
594 struct ath_common *common = ath9k_hw_common(ah);
595 u32 intval, nexttbtt;
596
597 ath9k_reset_beacon_status(sc);
598
599 intval = TU_TO_USEC(conf->beacon_interval);
600
601 if (conf->ibss_creator) {
602 nexttbtt = intval;
603 } else {
604 u32 tbtt, offset, tsftu;
605 u64 tsf;
606
607
608
609
610
611 tsf = ath9k_hw_gettsf64(ah);
612 tsftu = TSF_TO_TU(tsf >> 32, tsf) + FUDGE;
613 offset = tsftu % conf->beacon_interval;
614 tbtt = tsftu - offset;
615 if (offset)
616 tbtt += conf->beacon_interval;
617
618 nexttbtt = TU_TO_USEC(tbtt);
619 }
620
621 if (conf->enable_beacon)
622 ah->imask |= ATH9K_INT_SWBA;
623 else
624 ah->imask &= ~ATH9K_INT_SWBA;
625
626 ath_dbg(common, BEACON,
627 "IBSS (%s) nexttbtt: %u intval: %u conf_intval: %u\n",
628 (conf->enable_beacon) ? "Enable" : "Disable",
629 nexttbtt, intval, conf->beacon_interval);
630
631 ath9k_beacon_init(sc, nexttbtt, intval, conf->ibss_creator);
632
633
634
635
636
637 if (!conf->ibss_creator && conf->enable_beacon)
638 set_bit(SC_OP_BEACONS, &sc->sc_flags);
639}
640
641bool ath9k_allow_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
642{
643 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
644 struct ath_vif *avp = (void *)vif->drv_priv;
645
646 if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
647 if ((vif->type != NL80211_IFTYPE_AP) ||
648 (sc->nbcnvifs > 1)) {
649 ath_dbg(common, CONFIG,
650 "An AP interface is already present !\n");
651 return false;
652 }
653 }
654
655 if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION) {
656 if ((vif->type == NL80211_IFTYPE_STATION) &&
657 test_bit(SC_OP_BEACONS, &sc->sc_flags) &&
658 !avp->primary_sta_vif) {
659 ath_dbg(common, CONFIG,
660 "Beacon already configured for a station interface\n");
661 return false;
662 }
663 }
664
665 return true;
666}
667
668static void ath9k_cache_beacon_config(struct ath_softc *sc,
669 struct ieee80211_bss_conf *bss_conf)
670{
671 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
672 struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
673
674 ath_dbg(common, BEACON,
675 "Caching beacon data for BSS: %pM\n", bss_conf->bssid);
676
677 cur_conf->beacon_interval = bss_conf->beacon_int;
678 cur_conf->dtim_period = bss_conf->dtim_period;
679 cur_conf->listen_interval = 1;
680 cur_conf->dtim_count = 1;
681 cur_conf->ibss_creator = bss_conf->ibss_creator;
682 cur_conf->bmiss_timeout =
683 ATH_DEFAULT_BMISS_LIMIT * cur_conf->beacon_interval;
684
685
686
687
688
689
690
691 if (cur_conf->beacon_interval == 0)
692 cur_conf->beacon_interval = 100;
693
694
695
696
697
698
699 if (cur_conf->dtim_period == 0)
700 cur_conf->dtim_period = 1;
701
702}
703
704void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
705 u32 changed)
706{
707 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
708 struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
709 unsigned long flags;
710 bool skip_beacon = false;
711
712 if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION) {
713 ath9k_cache_beacon_config(sc, bss_conf);
714 ath9k_set_beacon(sc);
715 set_bit(SC_OP_BEACONS, &sc->sc_flags);
716 return;
717
718 }
719
720
721
722
723
724 if (changed & BSS_CHANGED_BEACON_ENABLED) {
725 if (!bss_conf->enable_beacon &&
726 (sc->nbcnvifs <= 1)) {
727 cur_conf->enable_beacon = false;
728 } else if (bss_conf->enable_beacon) {
729 cur_conf->enable_beacon = true;
730 ath9k_cache_beacon_config(sc, bss_conf);
731 }
732 }
733
734
735
736
737
738 if (cur_conf->beacon_interval) {
739
740
741
742
743
744 if ((changed & BSS_CHANGED_IBSS) && !bss_conf->ibss_creator &&
745 bss_conf->enable_beacon) {
746 spin_lock_irqsave(&sc->sc_pm_lock, flags);
747 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON;
748 spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
749 skip_beacon = true;
750 } else {
751 ath9k_set_beacon(sc);
752 }
753
754
755
756
757
758 if (cur_conf->enable_beacon && !skip_beacon)
759 set_bit(SC_OP_BEACONS, &sc->sc_flags);
760 else
761 clear_bit(SC_OP_BEACONS, &sc->sc_flags);
762 }
763}
764
765void ath9k_set_beacon(struct ath_softc *sc)
766{
767 struct ath_common *common = ath9k_hw_common(sc->sc_ah);
768 struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
769
770 switch (sc->sc_ah->opmode) {
771 case NL80211_IFTYPE_AP:
772 case NL80211_IFTYPE_MESH_POINT:
773 ath9k_beacon_config_ap(sc, cur_conf);
774 break;
775 case NL80211_IFTYPE_ADHOC:
776 ath9k_beacon_config_adhoc(sc, cur_conf);
777 break;
778 case NL80211_IFTYPE_STATION:
779 ath9k_beacon_config_sta(sc, cur_conf);
780 break;
781 default:
782 ath_dbg(common, CONFIG, "Unsupported beaconing mode\n");
783 return;
784 }
785}
786