net/mac80211/tx.c

398 	 * the frame is buffered to be sent after DTIM beacon frame.
432 	/* device releases frame after DTIM beacon */
4986 					struct beacon_data *beacon,
4997 		beacon_data = beacon->tail;
4998 		beacon_data_len = beacon->tail_len;
5001 		beacon_data = beacon->head;
5002 		beacon_data_len = beacon->head_len;
5005 		beacon_data = beacon->head;
5006 		beacon_data_len = beacon->head_len;
5014 	bcn_offsets = beacon->cntdwn_counter_offsets;
5015 	count = beacon->cntdwn_current_counter;
5034 static u8 __ieee80211_beacon_update_cntdwn(struct beacon_data *beacon)
5036 	beacon->cntdwn_current_counter--;
5039 	WARN_ON_ONCE(!beacon->cntdwn_current_counter);
5041 	return beacon->cntdwn_current_counter;
5048 	struct beacon_data *beacon = NULL;
5061 		beacon = rcu_dereference(link->u.ap.beacon);
5063 		beacon = rcu_dereference(sdata->u.ibss.presp);
5065 		beacon = rcu_dereference(sdata->u.mesh.beacon);
5067 	if (!beacon)
5070 	count = __ieee80211_beacon_update_cntdwn(beacon);
5081 	struct beacon_data *beacon = NULL;
5086 		beacon = rcu_dereference(sdata->deflink.u.ap.beacon);
5088 		beacon = rcu_dereference(sdata->u.ibss.presp);
5090 		beacon = rcu_dereference(sdata->u.mesh.beacon);
5092 	if (!beacon)
5095 	if (counter < beacon->cntdwn_current_counter)
5096 		beacon->cntdwn_current_counter = counter;
5108 	struct beacon_data *beacon = NULL;
5126 		beacon = rcu_dereference(link->u.ap.beacon);
5127 		if (WARN_ON(!beacon || !beacon->tail))
5129 		beacon_data = beacon->tail;
5130 		beacon_data_len = beacon->tail_len;
5134 		beacon = rcu_dereference(ifibss->presp);
5135 		if (!beacon)
5138 		beacon_data = beacon->head;
5139 		beacon_data_len = beacon->head_len;
5143 		beacon = rcu_dereference(ifmsh->beacon);
5144 		if (!beacon)
5147 		beacon_data = beacon->head;
5148 		beacon_data_len = beacon->head_len;
5154 	if (!beacon->cntdwn_counter_offsets[0])
5157 	if (WARN_ON_ONCE(beacon->cntdwn_counter_offsets[0] > beacon_data_len))
5160 	if (beacon_data[beacon->cntdwn_counter_offsets[0]] == 1)
5212 			    struct beacon_data *beacon,
5224 	if (offs && beacon) {
5228 			u16 csa_off = beacon->cntdwn_counter_offsets[i];
5265 ieee80211_beacon_add_mbssid(struct sk_buff *skb, struct beacon_data *beacon,
5268 	if (!beacon->mbssid_ies || !beacon->mbssid_ies->cnt ||
5269 	    i > beacon->mbssid_ies->cnt)
5272 	if (i < beacon->mbssid_ies->cnt) {
5273 		skb_put_data(skb, beacon->mbssid_ies->elem[i].data,
5274 			     beacon->mbssid_ies->elem[i].len);
5276 		if (beacon->rnr_ies && beacon->rnr_ies->cnt) {
5277 			skb_put_data(skb, beacon->rnr_ies->elem[i].data,
5278 				     beacon->rnr_ies->elem[i].len);
5280 			for (i = beacon->mbssid_ies->cnt; i < beacon->rnr_ies->cnt; i++)
5281 				skb_put_data(skb, beacon->rnr_ies->elem[i].data,
5282 					     beacon->rnr_ies->elem[i].len);
5287 	/* i == beacon->mbssid_ies->cnt, include all MBSSID elements */
5288 	for (i = 0; i < beacon->mbssid_ies->cnt; i++)
5289 		skb_put_data(skb, beacon->mbssid_ies->elem[i].data,
5290 			     beacon->mbssid_ies->elem[i].len);
5299 			struct beacon_data *beacon,
5310 	if (beacon->cntdwn_counter_offsets[0]) {
5314 		ieee80211_set_beacon_cntdwn(sdata, beacon, link);
5320 	mbssid_len = ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies,
5321 						     beacon->rnr_ies,
5324 	skb = dev_alloc_skb(local->tx_headroom + beacon->head_len +
5325 			    beacon->tail_len + 256 +
5331 	skb_put_data(skb, beacon->head, beacon->head_len);
5336 		offs->tim_offset = beacon->head_len;
5337 		offs->tim_length = skb->len - beacon->head_len;
5338 		offs->cntdwn_counter_offs[0] = beacon->cntdwn_counter_offsets[0];
5341 			ieee80211_beacon_add_mbssid(skb, beacon, ema_index);
5349 	if (beacon->tail)
5350 		skb_put_data(skb, beacon->tail, beacon->tail_len);
5355 	ieee80211_beacon_get_finish(hw, vif, link, offs, beacon, skb,
5365 				 bool is_template, struct beacon_data *beacon,
5370 	if (!beacon->mbssid_ies || !beacon->mbssid_ies->cnt)
5373 	ema = kzalloc(struct_size(ema, bcn, beacon->mbssid_ies->cnt),
5378 	for (ema->cnt = 0; ema->cnt < beacon->mbssid_ies->cnt; ema->cnt++) {
5382 						is_template, beacon,
5388 	if (ema->cnt == beacon->mbssid_ies->cnt)
5407 	struct beacon_data *beacon = NULL;
5429 		beacon = rcu_dereference(link->u.ap.beacon);
5430 		if (!beacon)
5438 								 beacon,
5441 			if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) {
5442 				if (ema_index >= beacon->mbssid_ies->cnt)
5446 					ema_index = beacon->mbssid_ies->cnt;
5452 						      is_template, beacon,
5460 		beacon = rcu_dereference(ifibss->presp);
5461 		if (!beacon)
5464 		if (beacon->cntdwn_counter_offsets[0]) {
5466 				__ieee80211_beacon_update_cntdwn(beacon);
5468 			ieee80211_set_beacon_cntdwn(sdata, beacon, link);
5471 		skb = dev_alloc_skb(local->tx_headroom + beacon->head_len +
5476 		skb_put_data(skb, beacon->head, beacon->head_len);
5482 		ieee80211_beacon_get_finish(hw, vif, link, offs, beacon, skb,
5487 		beacon = rcu_dereference(ifmsh->beacon);
5488 		if (!beacon)
5491 		if (beacon->cntdwn_counter_offsets[0]) {
5498 				__ieee80211_beacon_update_cntdwn(beacon);
5500 			ieee80211_set_beacon_cntdwn(sdata, beacon, link);
5504 			ifmsh->sync_ops->adjust_tsf(sdata, beacon);
5507 				    beacon->head_len +
5509 				    beacon->tail_len +
5514 		skb_put_data(skb, beacon->head, beacon->head_len);
5519 			offs->tim_offset = beacon->head_len;
5520 			offs->tim_length = skb->len - beacon->head_len;
5523 		skb_put_data(skb, beacon->tail, beacon->tail_len);
5524 		ieee80211_beacon_get_finish(hw, vif, link, offs, beacon, skb,
5906 		struct beacon_data *beacon =
5907 				rcu_dereference(sdata->deflink.u.ap.beacon);
5909 		if (!beacon || !beacon->head)
5920 		goto out; /* send buffered bc/mc only after DTIM beacon */