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
== 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 for (i
= 0; i
< 4; i
++)
92 info
.txpower
[i
] = MAX_RATE_POWER
;
93 info
.keyix
= ATH9K_TXKEYIX_INVALID
;
94 info
.keytype
= ATH9K_KEY_TYPE_CLEAR
;
95 info
.flags
= ATH9K_TXDESC_NOACK
| ATH9K_TXDESC_CLRDMASK
;
97 info
.buf_addr
[0] = bf
->bf_buf_addr
;
98 info
.buf_len
[0] = roundup(skb
->len
, 4);
100 info
.is_first
= true;
103 info
.qcu
= sc
->beacon
.beaconq
;
105 info
.rates
[0].Tries
= 1;
106 info
.rates
[0].Rate
= rate
;
107 info
.rates
[0].ChSel
= ath_txchainmask_reduction(sc
, chainmask
, rate
);
109 ath9k_hw_set_txdesc(ah
, bf
->bf_desc
, &info
);
112 static struct ath_buf
*ath9k_beacon_generate(struct ieee80211_hw
*hw
,
113 struct ieee80211_vif
*vif
)
115 struct ath_softc
*sc
= hw
->priv
;
116 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
118 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
120 struct ath_txq
*cabq
= sc
->beacon
.cabq
;
121 struct ieee80211_tx_info
*info
;
122 struct ieee80211_mgmt
*mgmt_hdr
;
125 if (avp
->av_bcbuf
== NULL
)
131 dma_unmap_single(sc
->dev
, bf
->bf_buf_addr
,
132 skb
->len
, DMA_TO_DEVICE
);
133 dev_kfree_skb_any(skb
);
138 skb
= ieee80211_beacon_get(hw
, vif
);
144 mgmt_hdr
= (struct ieee80211_mgmt
*)skb
->data
;
145 mgmt_hdr
->u
.beacon
.timestamp
= avp
->tsf_adjust
;
147 info
= IEEE80211_SKB_CB(skb
);
149 ath_assign_seq(common
, skb
);
151 /* Always assign NOA attr when MCC enabled */
152 if (ath9k_is_chanctx_enabled())
153 ath9k_beacon_add_noa(sc
, avp
, skb
);
155 bf
->bf_buf_addr
= dma_map_single(sc
->dev
, skb
->data
,
156 skb
->len
, DMA_TO_DEVICE
);
157 if (unlikely(dma_mapping_error(sc
->dev
, bf
->bf_buf_addr
))) {
158 dev_kfree_skb_any(skb
);
161 ath_err(common
, "dma_mapping_error on beaconing\n");
165 skb
= ieee80211_get_buffered_bc(hw
, vif
);
168 * if the CABQ traffic from previous DTIM is pending and the current
169 * beacon is also a DTIM.
170 * 1) if there is only one vif let the cab traffic continue.
171 * 2) if there are more than one vif and we are using staggered
172 * beacons, then drain the cabq by dropping all the frames in
173 * the cabq so that the current vifs cab traffic can be scheduled.
175 spin_lock_bh(&cabq
->axq_lock
);
176 cabq_depth
= cabq
->axq_depth
;
177 spin_unlock_bh(&cabq
->axq_lock
);
179 if (skb
&& cabq_depth
) {
180 if (sc
->cur_chan
->nvifs
> 1) {
181 ath_dbg(common
, BEACON
,
182 "Flushing previous cabq traffic\n");
183 ath_draintxq(sc
, cabq
);
187 ath9k_beacon_setup(sc
, vif
, bf
, info
->control
.rates
[0].idx
);
190 ath_tx_cabq(hw
, vif
, skb
);
195 void ath9k_beacon_assign_slot(struct ath_softc
*sc
, struct ieee80211_vif
*vif
)
197 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
198 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
201 avp
->av_bcbuf
= list_first_entry(&sc
->beacon
.bbuf
, struct ath_buf
, list
);
202 list_del(&avp
->av_bcbuf
->list
);
204 for (slot
= 0; slot
< ATH_BCBUF
; slot
++) {
205 if (sc
->beacon
.bslot
[slot
] == NULL
) {
206 avp
->av_bslot
= slot
;
211 sc
->beacon
.bslot
[avp
->av_bslot
] = vif
;
213 ath_dbg(common
, CONFIG
, "Added interface at beacon slot: %d\n",
217 void ath9k_beacon_remove_slot(struct ath_softc
*sc
, struct ieee80211_vif
*vif
)
219 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
220 struct ath_vif
*avp
= (void *)vif
->drv_priv
;
221 struct ath_buf
*bf
= avp
->av_bcbuf
;
223 ath_dbg(common
, CONFIG
, "Removing interface at beacon slot: %d\n",
226 tasklet_disable(&sc
->bcon_tasklet
);
228 if (bf
&& bf
->bf_mpdu
) {
229 struct sk_buff
*skb
= bf
->bf_mpdu
;
230 dma_unmap_single(sc
->dev
, bf
->bf_buf_addr
,
231 skb
->len
, DMA_TO_DEVICE
);
232 dev_kfree_skb_any(skb
);
237 avp
->av_bcbuf
= NULL
;
238 sc
->beacon
.bslot
[avp
->av_bslot
] = NULL
;
239 list_add_tail(&bf
->list
, &sc
->beacon
.bbuf
);
241 tasklet_enable(&sc
->bcon_tasklet
);
244 void ath9k_beacon_ensure_primary_slot(struct ath_softc
*sc
)
246 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
247 struct ieee80211_vif
*vif
;
251 int first_slot
= ATH_BCBUF
;
254 tasklet_disable(&sc
->bcon_tasklet
);
256 /* Find first taken slot. */
257 for (slot
= 0; slot
< ATH_BCBUF
; slot
++) {
258 if (sc
->beacon
.bslot
[slot
]) {
266 /* Re-enumarate all slots, moving them forward. */
267 for (slot
= 0; slot
< ATH_BCBUF
; slot
++) {
268 if (slot
+ first_slot
< ATH_BCBUF
) {
269 vif
= sc
->beacon
.bslot
[slot
+ first_slot
];
270 sc
->beacon
.bslot
[slot
] = vif
;
273 avp
= (void *)vif
->drv_priv
;
274 avp
->av_bslot
= slot
;
277 sc
->beacon
.bslot
[slot
] = NULL
;
281 vif
= sc
->beacon
.bslot
[0];
285 /* Get the tsf_adjust value for the new first slot. */
286 avp
= (void *)vif
->drv_priv
;
287 tsfadjust
= le64_to_cpu(avp
->tsf_adjust
);
289 ath_dbg(common
, CONFIG
,
290 "Adjusting global TSF after beacon slot reassignment: %lld\n",
291 (signed long long)tsfadjust
);
293 /* Modify TSF as required and update the HW. */
294 avp
->chanctx
->tsf_val
+= tsfadjust
;
295 if (sc
->cur_chan
== avp
->chanctx
) {
296 offset
= ath9k_hw_get_tsf_offset(&avp
->chanctx
->tsf_ts
, NULL
);
297 ath9k_hw_settsf64(sc
->sc_ah
, avp
->chanctx
->tsf_val
+ offset
);
300 /* The slots tsf_adjust will be updated by ath9k_beacon_config later. */
303 tasklet_enable(&sc
->bcon_tasklet
);
306 static int ath9k_beacon_choose_slot(struct ath_softc
*sc
)
308 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
309 struct ath_beacon_config
*cur_conf
= &sc
->cur_chan
->beacon
;
315 if (sc
->sc_ah
->opmode
!= NL80211_IFTYPE_AP
&&
316 sc
->sc_ah
->opmode
!= NL80211_IFTYPE_MESH_POINT
) {
317 ath_dbg(common
, BEACON
, "slot 0, tsf: %llu\n",
318 ath9k_hw_gettsf64(sc
->sc_ah
));
322 intval
= cur_conf
->beacon_interval
? : ATH_DEFAULT_BINTVAL
;
323 tsf
= ath9k_hw_gettsf64(sc
->sc_ah
);
324 tsf
+= TU_TO_USEC(sc
->sc_ah
->config
.sw_beacon_response_time
);
325 tsftu
= TSF_TO_TU((tsf
* ATH_BCBUF
) >>32, tsf
* ATH_BCBUF
);
326 slot
= (tsftu
% (intval
* ATH_BCBUF
)) / intval
;
328 ath_dbg(common
, BEACON
, "slot: %d tsf: %llu tsftu: %u\n",
329 slot
, tsf
, tsftu
/ ATH_BCBUF
);
334 static void ath9k_set_tsfadjust(struct ath_softc
*sc
,
335 struct ath_beacon_config
*cur_conf
)
337 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
341 for (slot
= 0; slot
< ATH_BCBUF
; slot
++) {
344 if (!sc
->beacon
.bslot
[slot
])
347 avp
= (void *)sc
->beacon
.bslot
[slot
]->drv_priv
;
349 /* tsf_adjust is added to the TSF value. We send out the
350 * beacon late, so need to adjust the TSF starting point to be
351 * later in time (i.e. the theoretical first beacon has a TSF
352 * of 0 after correction).
354 tsfadjust
= cur_conf
->beacon_interval
* avp
->av_bslot
;
355 tsfadjust
= -TU_TO_USEC(tsfadjust
) / ATH_BCBUF
;
356 avp
->tsf_adjust
= cpu_to_le64(tsfadjust
);
358 ath_dbg(common
, CONFIG
, "tsfadjust is: %lld for bslot: %d\n",
359 (signed long long)tsfadjust
, avp
->av_bslot
);
363 bool ath9k_csa_is_finished(struct ath_softc
*sc
, struct ieee80211_vif
*vif
)
365 if (!vif
|| !vif
->csa_active
)
368 if (!ieee80211_csa_is_complete(vif
))
371 ieee80211_csa_finish(vif
);
375 static void ath9k_csa_update_vif(void *data
, u8
*mac
, struct ieee80211_vif
*vif
)
377 struct ath_softc
*sc
= data
;
378 ath9k_csa_is_finished(sc
, vif
);
381 void ath9k_csa_update(struct ath_softc
*sc
)
383 ieee80211_iterate_active_interfaces_atomic(sc
->hw
,
384 IEEE80211_IFACE_ITER_NORMAL
,
385 ath9k_csa_update_vif
, sc
);
388 void ath9k_beacon_tasklet(unsigned long data
)
390 struct ath_softc
*sc
= (struct ath_softc
*)data
;
391 struct ath_hw
*ah
= sc
->sc_ah
;
392 struct ath_common
*common
= ath9k_hw_common(ah
);
393 struct ath_buf
*bf
= NULL
;
394 struct ieee80211_vif
*vif
;
395 bool edma
= !!(ah
->caps
.hw_caps
& ATH9K_HW_CAP_EDMA
);
398 if (test_bit(ATH_OP_HW_RESET
, &common
->op_flags
)) {
399 ath_dbg(common
, RESET
,
400 "reset work is pending, skip beaconing now\n");
405 * Check if the previous beacon has gone out. If
406 * not don't try to post another, skip this period
407 * and wait for the next. Missed beacons indicate
408 * a problem and should not occur. If we miss too
409 * many consecutive beacons reset the device.
411 if (ath9k_hw_numtxpending(ah
, sc
->beacon
.beaconq
) != 0) {
412 sc
->beacon
.bmisscnt
++;
414 ath9k_hw_check_nav(ah
);
417 * If the previous beacon has not been transmitted
418 * and a MAC/BB hang has been identified, return
419 * here because a chip reset would have been
422 if (!ath_hw_check(sc
))
425 if (sc
->beacon
.bmisscnt
< BSTUCK_THRESH
* sc
->nbcnvifs
) {
426 ath_dbg(common
, BSTUCK
,
427 "missed %u consecutive beacons\n",
428 sc
->beacon
.bmisscnt
);
429 ath9k_hw_stop_dma_queue(ah
, sc
->beacon
.beaconq
);
430 if (sc
->beacon
.bmisscnt
> 3)
431 ath9k_hw_bstuck_nfcal(ah
);
432 } else if (sc
->beacon
.bmisscnt
>= BSTUCK_THRESH
) {
433 ath_dbg(common
, BSTUCK
, "beacon is officially stuck\n");
434 sc
->beacon
.bmisscnt
= 0;
435 ath9k_queue_reset(sc
, RESET_TYPE_BEACON_STUCK
);
441 slot
= ath9k_beacon_choose_slot(sc
);
442 vif
= sc
->beacon
.bslot
[slot
];
444 /* EDMA devices check that in the tx completion function. */
446 if (ath9k_is_chanctx_enabled()) {
447 ath_chanctx_beacon_sent_ev(sc
,
448 ATH_CHANCTX_EVENT_BEACON_SENT
);
451 if (ath9k_csa_is_finished(sc
, vif
))
455 if (!vif
|| !vif
->bss_conf
.enable_beacon
)
458 if (ath9k_is_chanctx_enabled()) {
459 ath_chanctx_event(sc
, vif
, ATH_CHANCTX_EVENT_BEACON_PREPARE
);
462 bf
= ath9k_beacon_generate(sc
->hw
, vif
);
464 if (sc
->beacon
.bmisscnt
!= 0) {
465 ath_dbg(common
, BSTUCK
, "resume beacon xmit after %u misses\n",
466 sc
->beacon
.bmisscnt
);
467 sc
->beacon
.bmisscnt
= 0;
471 * Handle slot time change when a non-ERP station joins/leaves
472 * an 11g network. The 802.11 layer notifies us via callback,
473 * we mark updateslot, then wait one beacon before effecting
474 * the change. This gives associated stations at least one
475 * beacon interval to note the state change.
477 * NB: The slot time change state machine is clocked according
478 * to whether we are bursting or staggering beacons. We
479 * recognize the request to update and record the current
480 * slot then don't transition until that slot is reached
481 * again. If we miss a beacon for that slot then we'll be
482 * slow to transition but we'll be sure at least one beacon
483 * interval has passed. When bursting slot is always left
484 * set to ATH_BCBUF so this check is a noop.
486 if (sc
->beacon
.updateslot
== UPDATE
) {
487 sc
->beacon
.updateslot
= COMMIT
;
488 sc
->beacon
.slotupdate
= slot
;
489 } else if (sc
->beacon
.updateslot
== COMMIT
&&
490 sc
->beacon
.slotupdate
== slot
) {
491 ah
->slottime
= sc
->beacon
.slottime
;
492 ath9k_hw_init_global_settings(ah
);
493 sc
->beacon
.updateslot
= OK
;
497 ath9k_reset_beacon_status(sc
);
499 ath_dbg(common
, BEACON
,
500 "Transmitting beacon for slot: %d\n", slot
);
502 /* NB: cabq traffic should already be queued and primed */
503 ath9k_hw_puttxbuf(ah
, sc
->beacon
.beaconq
, bf
->bf_daddr
);
506 ath9k_hw_txstart(ah
, sc
->beacon
.beaconq
);
511 * Both nexttbtt and intval have to be in usecs.
513 static void ath9k_beacon_init(struct ath_softc
*sc
, u32 nexttbtt
,
516 struct ath_hw
*ah
= sc
->sc_ah
;
518 ath9k_hw_disable_interrupts(ah
);
519 ath9k_beaconq_config(sc
);
520 ath9k_hw_beaconinit(ah
, nexttbtt
, intval
);
521 ah
->imask
|= ATH9K_INT_SWBA
;
522 sc
->beacon
.bmisscnt
= 0;
523 ath9k_hw_set_interrupts(ah
);
524 ath9k_hw_enable_interrupts(ah
);
527 static void ath9k_beacon_stop(struct ath_softc
*sc
)
529 ath9k_hw_disable_interrupts(sc
->sc_ah
);
530 sc
->sc_ah
->imask
&= ~(ATH9K_INT_SWBA
| ATH9K_INT_BMISS
);
531 sc
->beacon
.bmisscnt
= 0;
532 ath9k_hw_set_interrupts(sc
->sc_ah
);
533 ath9k_hw_enable_interrupts(sc
->sc_ah
);
537 * For multi-bss ap support beacons are either staggered evenly over N slots or
538 * burst together. For the former arrange for the SWBA to be delivered for each
539 * slot. Slots that are not occupied will generate nothing.
541 static void ath9k_beacon_config_ap(struct ath_softc
*sc
,
542 struct ath_beacon_config
*conf
)
544 struct ath_hw
*ah
= sc
->sc_ah
;
546 ath9k_cmn_beacon_config_ap(ah
, conf
, ATH_BCBUF
);
547 ath9k_beacon_init(sc
, conf
->nexttbtt
, conf
->intval
);
550 static void ath9k_beacon_config_sta(struct ath_hw
*ah
,
551 struct ath_beacon_config
*conf
)
553 struct ath9k_beacon_state bs
;
555 if (ath9k_cmn_beacon_config_sta(ah
, conf
, &bs
) == -EPERM
)
558 ath9k_hw_disable_interrupts(ah
);
559 ath9k_hw_set_sta_beacon_timers(ah
, &bs
);
560 ah
->imask
|= ATH9K_INT_BMISS
;
562 ath9k_hw_set_interrupts(ah
);
563 ath9k_hw_enable_interrupts(ah
);
566 static void ath9k_beacon_config_adhoc(struct ath_softc
*sc
,
567 struct ath_beacon_config
*conf
)
569 struct ath_hw
*ah
= sc
->sc_ah
;
570 struct ath_common
*common
= ath9k_hw_common(ah
);
572 ath9k_reset_beacon_status(sc
);
574 ath9k_cmn_beacon_config_adhoc(ah
, conf
);
576 ath9k_beacon_init(sc
, conf
->nexttbtt
, conf
->intval
);
579 * Set the global 'beacon has been configured' flag for the
580 * joiner case in IBSS mode.
582 if (!conf
->ibss_creator
&& conf
->enable_beacon
)
583 set_bit(ATH_OP_BEACONS
, &common
->op_flags
);
586 static void ath9k_cache_beacon_config(struct ath_softc
*sc
,
587 struct ath_chanctx
*ctx
,
588 struct ieee80211_bss_conf
*bss_conf
)
590 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
591 struct ath_beacon_config
*cur_conf
= &ctx
->beacon
;
593 ath_dbg(common
, BEACON
,
594 "Caching beacon data for BSS: %pM\n", bss_conf
->bssid
);
596 cur_conf
->beacon_interval
= bss_conf
->beacon_int
;
597 cur_conf
->dtim_period
= bss_conf
->dtim_period
;
598 cur_conf
->dtim_count
= 1;
599 cur_conf
->ibss_creator
= bss_conf
->ibss_creator
;
602 * It looks like mac80211 may end up using beacon interval of zero in
603 * some cases (at least for mesh point). Avoid getting into an
604 * infinite loop by using a bit safer value instead. To be safe,
605 * do sanity check on beacon interval for all operating modes.
607 if (cur_conf
->beacon_interval
== 0)
608 cur_conf
->beacon_interval
= 100;
610 cur_conf
->bmiss_timeout
=
611 ATH_DEFAULT_BMISS_LIMIT
* cur_conf
->beacon_interval
;
614 * We don't parse dtim period from mac80211 during the driver
615 * initialization as it breaks association with hidden-ssid
616 * AP and it causes latency in roaming
618 if (cur_conf
->dtim_period
== 0)
619 cur_conf
->dtim_period
= 1;
621 ath9k_set_tsfadjust(sc
, cur_conf
);
624 void ath9k_beacon_config(struct ath_softc
*sc
, struct ieee80211_vif
*main_vif
,
627 struct ath_hw
*ah
= sc
->sc_ah
;
628 struct ath_common
*common
= ath9k_hw_common(ah
);
630 struct ath_chanctx
*ctx
;
631 struct ath_beacon_config
*cur_conf
;
634 bool skip_beacon
= false;
637 clear_bit(ATH_OP_BEACONS
, &common
->op_flags
);
638 ath9k_beacon_stop(sc
);
642 if (WARN_ON(!main_vif
))
645 avp
= (void *)main_vif
->drv_priv
;
647 cur_conf
= &ctx
->beacon
;
648 enabled
= cur_conf
->enable_beacon
;
649 cur_conf
->enable_beacon
= beacons
;
651 if (sc
->sc_ah
->opmode
== NL80211_IFTYPE_STATION
) {
652 ath9k_cache_beacon_config(sc
, ctx
, &main_vif
->bss_conf
);
654 ath9k_set_beacon(sc
);
655 set_bit(ATH_OP_BEACONS
, &common
->op_flags
);
659 /* Update the beacon configuration. */
660 ath9k_cache_beacon_config(sc
, ctx
, &main_vif
->bss_conf
);
663 * Configure the HW beacon registers only when we have a valid
666 if (cur_conf
->beacon_interval
) {
667 /* Special case to sync the TSF when joining an existing IBSS.
668 * This is only done if no AP interface is active.
669 * Note that mac80211 always resets the TSF when creating a new
672 if (sc
->sc_ah
->opmode
== NL80211_IFTYPE_ADHOC
&&
673 !enabled
&& beacons
&& !main_vif
->bss_conf
.ibss_creator
) {
674 spin_lock_irqsave(&sc
->sc_pm_lock
, flags
);
675 sc
->ps_flags
|= PS_BEACON_SYNC
| PS_WAIT_FOR_BEACON
;
676 spin_unlock_irqrestore(&sc
->sc_pm_lock
, flags
);
681 * Do not set the ATH_OP_BEACONS flag for IBSS joiner mode
682 * here, it is done in ath9k_beacon_config_adhoc().
684 if (beacons
&& !skip_beacon
) {
685 set_bit(ATH_OP_BEACONS
, &common
->op_flags
);
686 ath9k_set_beacon(sc
);
688 clear_bit(ATH_OP_BEACONS
, &common
->op_flags
);
689 ath9k_beacon_stop(sc
);
692 clear_bit(ATH_OP_BEACONS
, &common
->op_flags
);
693 ath9k_beacon_stop(sc
);
697 void ath9k_set_beacon(struct ath_softc
*sc
)
699 struct ath_common
*common
= ath9k_hw_common(sc
->sc_ah
);
700 struct ath_beacon_config
*cur_conf
= &sc
->cur_chan
->beacon
;
702 switch (sc
->sc_ah
->opmode
) {
703 case NL80211_IFTYPE_AP
:
704 case NL80211_IFTYPE_MESH_POINT
:
705 ath9k_beacon_config_ap(sc
, cur_conf
);
707 case NL80211_IFTYPE_ADHOC
:
708 ath9k_beacon_config_adhoc(sc
, cur_conf
);
710 case NL80211_IFTYPE_STATION
:
711 ath9k_beacon_config_sta(sc
->sc_ah
, cur_conf
);
714 ath_dbg(common
, CONFIG
, "Unsupported beaconing mode\n");