1 files changed, 279 insertions, 79 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 3456c0486b4..1a252c606ad 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -19,6 +19,7 @@
 #include <linux/bitmap.h>
 #include <linux/rcupdate.h>
 #include <linux/export.h>
+#include <linux/time.h>
 #include <net/net_namespace.h>
 #include <net/ieee80211_radiotap.h>
 #include <net/cfg80211.h>
@@ -413,6 +414,9 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx)
 	if (ieee80211_has_order(hdr->frame_control))
 		return TX_CONTINUE;
 
+	if (ieee80211_is_probe_req(hdr->frame_control))
+		return TX_CONTINUE;
+
 	if (tx->local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
 		info->hw_queue = tx->sdata->vif.cab_queue;
 
@@ -451,8 +455,7 @@ static int ieee80211_use_mfp(__le16 fc, struct sta_info *sta,
 	if (sta == NULL || !test_sta_flag(sta, WLAN_STA_MFP))
 		return 0;
 
-	if (!ieee80211_is_robust_mgmt_frame((struct ieee80211_hdr *)
-					    skb->data))
+	if (!ieee80211_is_robust_mgmt_frame(skb))
 		return 0;
 
 	return 1;
@@ -474,11 +477,8 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
 		     !(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER))) {
 		int ac = skb_get_queue_mapping(tx->skb);
 
-		/* only deauth, disassoc and action are bufferable MMPDUs */
 		if (ieee80211_is_mgmt(hdr->frame_control) &&
-		    !ieee80211_is_deauth(hdr->frame_control) &&
-		    !ieee80211_is_disassoc(hdr->frame_control) &&
-		    !ieee80211_is_action(hdr->frame_control)) {
+		    !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) {
 			info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
 			return TX_CONTINUE;
 		}
@@ -487,6 +487,20 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
 		       sta->sta.addr, sta->sta.aid, ac);
 		if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
 			purge_old_ps_buffers(tx->local);
+
+		/* sync with ieee80211_sta_ps_deliver_wakeup */
+		spin_lock(&sta->ps_lock);
+		/*
+		 * STA woke up the meantime and all the frames on ps_tx_buf have
+		 * been queued to pending queue. No reordering can happen, go
+		 * ahead and Tx the packet.
+		 */
+		if (!test_sta_flag(sta, WLAN_STA_PS_STA) &&
+		    !test_sta_flag(sta, WLAN_STA_PS_DRIVER)) {
+			spin_unlock(&sta->ps_lock);
+			return TX_CONTINUE;
+		}
+
 		if (skb_queue_len(&sta->ps_tx_buf[ac]) >= STA_MAX_TX_BUFFER) {
 			struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf[ac]);
 			ps_dbg(tx->sdata,
@@ -499,7 +513,9 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
 		info->control.jiffies = jiffies;
 		info->control.vif = &tx->sdata->vif;
 		info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+		info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
 		skb_queue_tail(&sta->ps_tx_buf[ac], tx->skb);
+		spin_unlock(&sta->ps_lock);
 
 		if (!timer_pending(&local->sta_cleanup))
 			mod_timer(&local->sta_cleanup,
@@ -557,11 +573,12 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
 
 	if (unlikely(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT))
 		tx->key = NULL;
-	else if (tx->sta && (key = rcu_dereference(tx->sta->ptk)))
+	else if (tx->sta &&
+		 (key = rcu_dereference(tx->sta->ptk[tx->sta->ptk_idx])))
 		tx->key = key;
 	else if (ieee80211_is_mgmt(hdr->frame_control) &&
 		 is_multicast_ether_addr(hdr->addr1) &&
-		 ieee80211_is_robust_mgmt_frame(hdr) &&
+		 ieee80211_is_robust_mgmt_frame(tx->skb) &&
 		 (key = rcu_dereference(tx->sdata->default_mgmt_key)))
 		tx->key = key;
 	else if (is_multicast_ether_addr(hdr->addr1) &&
@@ -576,12 +593,12 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
 		tx->key = NULL;
 	else if (tx->skb->protocol == tx->sdata->control_port_protocol)
 		tx->key = NULL;
-	else if (ieee80211_is_robust_mgmt_frame(hdr) &&
+	else if (ieee80211_is_robust_mgmt_frame(tx->skb) &&
 		 !(ieee80211_is_action(hdr->frame_control) &&
 		   tx->sta && test_sta_flag(tx->sta, WLAN_STA_MFP)))
 		tx->key = NULL;
 	else if (ieee80211_is_mgmt(hdr->frame_control) &&
-		 !ieee80211_is_robust_mgmt_frame(hdr))
+		 !ieee80211_is_robust_mgmt_frame(tx->skb))
 		tx->key = NULL;
 	else {
 		I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
@@ -840,15 +857,16 @@ static int ieee80211_fragment(struct ieee80211_tx_data *tx,
 		rem -= fraglen;
 		tmp = dev_alloc_skb(local->tx_headroom +
 				    frag_threshold +
-				    IEEE80211_ENCRYPT_HEADROOM +
+				    tx->sdata->encrypt_headroom +
 				    IEEE80211_ENCRYPT_TAILROOM);
 		if (!tmp)
 			return -ENOMEM;
 
 		__skb_queue_tail(&tx->skbs, tmp);
 
-		skb_reserve(tmp, local->tx_headroom +
-				 IEEE80211_ENCRYPT_HEADROOM);
+		skb_reserve(tmp,
+			    local->tx_headroom + tx->sdata->encrypt_headroom);
+
 		/* copy control information */
 		memcpy(tmp->cb, skb->cb, sizeof(tmp->cb));
 
@@ -871,7 +889,7 @@ static int ieee80211_fragment(struct ieee80211_tx_data *tx,
 	}
 
 	/* adjust first fragment's length */
-	skb->len = hdrlen + per_fragm;
+	skb_trim(skb, hdrlen + per_fragm);
 	return 0;
 }
 
@@ -1070,6 +1088,7 @@ static bool ieee80211_tx_prep_agg(struct ieee80211_tx_data *tx,
 			queued = true;
 			info->control.vif = &tx->sdata->vif;
 			info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+			info->flags &= ~IEEE80211_TX_TEMPORARY_FLAGS;
 			__skb_queue_tail(&tid_tx->pending, skb);
 			if (skb_queue_len(&tid_tx->pending) > STA_MAX_TX_BUFFER)
 				purge_skb = __skb_dequeue(&tid_tx->pending);
@@ -1120,7 +1139,8 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
 		tx->sta = rcu_dereference(sdata->u.vlan.sta);
 		if (!tx->sta && sdata->dev->ieee80211_ptr->use_4addr)
 			return TX_DROP;
-	} else if (info->flags & IEEE80211_TX_CTL_INJECTED ||
+	} else if (info->flags & (IEEE80211_TX_CTL_INJECTED |
+				  IEEE80211_TX_INTFL_NL80211_FRAME_TX) ||
 		   tx->sdata->control_port_protocol == tx->skb->protocol) {
 		tx->sta = sta_info_get_bss(sdata, hdr->addr1);
 	}
@@ -1366,6 +1386,35 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
 	return 0;
 }
 
+bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
+			      struct ieee80211_vif *vif, struct sk_buff *skb,
+			      int band, struct ieee80211_sta **sta)
+{
+	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_tx_data tx;
+
+	if (ieee80211_tx_prepare(sdata, &tx, skb) == TX_DROP)
+		return false;
+
+	info->band = band;
+	info->control.vif = vif;
+	info->hw_queue = vif->hw_queue[skb_get_queue_mapping(skb)];
+
+	if (invoke_tx_handlers(&tx))
+		return false;
+
+	if (sta) {
+		if (tx.sta)
+			*sta = &tx.sta->sta;
+		else
+			*sta = NULL;
+	}
+
+	return true;
+}
+EXPORT_SYMBOL(ieee80211_tx_prepare_skb);
+
 /*
  * Returns false if the frame couldn't be transmitted but was queued instead.
  */
@@ -1455,7 +1504,7 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
 
 	headroom = local->tx_headroom;
 	if (may_encrypt)
-		headroom += IEEE80211_ENCRYPT_HEADROOM;
+		headroom += sdata->encrypt_headroom;
 	headroom -= skb_headroom(skb);
 	headroom = max_t(int, 0, headroom);
 
@@ -1694,8 +1743,7 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
 	 * radar detection by itself. We can do that later by adding a
 	 * monitor flag interfaces used for AP support.
 	 */
-	if ((chan->flags & (IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_RADAR |
-			    IEEE80211_CHAN_PASSIVE_SCAN)))
+	if ((chan->flags & (IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_RADAR)))
 		goto fail_rcu;
 
 	ieee80211_xmit(sdata, skb, chan->band);
@@ -1710,6 +1758,26 @@ fail:
 	return NETDEV_TX_OK; /* meaning, we dealt with the skb */
 }
 
+/*
+ * Measure Tx frame arrival time for Tx latency statistics calculation
+ * A single Tx frame latency should be measured from when it is entering the
+ * Kernel until we receive Tx complete confirmation indication and the skb is
+ * freed.
+ */
+static void ieee80211_tx_latency_start_msrmnt(struct ieee80211_local *local,
+					      struct sk_buff *skb)
+{
+	struct timespec skb_arv;
+	struct ieee80211_tx_latency_bin_ranges *tx_latency;
+
+	tx_latency = rcu_dereference(local->tx_latency);
+	if (!tx_latency)
+		return;
+
+	ktime_get_ts(&skb_arv);
+	skb->tstamp = ktime_set(skb_arv.tv_sec, skb_arv.tv_nsec);
+}
+
 /**
  * ieee80211_subif_start_xmit - netif start_xmit function for Ethernet-type
  * subinterfaces (wlan#, WDS, and VLAN interfaces)
@@ -1760,6 +1828,9 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 
 	rcu_read_lock();
 
+	/* Measure frame arrival for Tx latency statistics calculation */
+	ieee80211_tx_latency_start_msrmnt(local, skb);
+
 	switch (sdata->vif.type) {
 	case NL80211_IFTYPE_AP_VLAN:
 		sta = rcu_dereference(sdata->u.vlan.sta);
@@ -1981,7 +2052,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 	 * EAPOL frames from the local station.
 	 */
 	if (unlikely(!ieee80211_vif_is_mesh(&sdata->vif) &&
-		     !is_multicast_ether_addr(hdr.addr1) && !authorized &&
+		     !multicast && !authorized &&
 		     (cpu_to_be16(ethertype) != sdata->control_port_protocol ||
 		      !ether_addr_equal(sdata->vif.addr, skb->data + ETH_ALEN)))) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
@@ -2079,7 +2150,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 	 */
 
 	if (head_need > 0 || skb_cloned(skb)) {
-		head_need += IEEE80211_ENCRYPT_HEADROOM;
+		head_need += sdata->encrypt_headroom;
 		head_need += local->tx_headroom;
 		head_need = max_t(int, 0, head_need);
 		if (ieee80211_skb_resize(sdata, skb, head_need, true)) {
@@ -2106,7 +2177,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 	if (ieee80211_is_data_qos(fc)) {
 		__le16 *qos_control;
 
-		qos_control = (__le16*) skb_push(skb, 2);
+		qos_control = (__le16 *) skb_push(skb, 2);
 		memcpy(skb_push(skb, hdrlen - 2), &hdr, hdrlen - 2);
 		/*
 		 * Maybe we could actually set some fields here, for now just
@@ -2257,7 +2328,8 @@ void ieee80211_tx_pending(unsigned long data)
 /* functions for drivers to get certain frames */
 
 static void __ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
-				       struct ps_data *ps, struct sk_buff *skb)
+				       struct ps_data *ps, struct sk_buff *skb,
+				       bool is_template)
 {
 	u8 *pos, *tim;
 	int aid0 = 0;
@@ -2268,13 +2340,14 @@ static void __ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
 	if (atomic_read(&ps->num_sta_ps) > 0)
 		/* in the hope that this is faster than
 		 * checking byte-for-byte */
-		have_bits = !bitmap_empty((unsigned long*)ps->tim,
+		have_bits = !bitmap_empty((unsigned long *)ps->tim,
 					  IEEE80211_MAX_AID+1);
-
-	if (ps->dtim_count == 0)
-		ps->dtim_count = sdata->vif.bss_conf.dtim_period - 1;
-	else
-		ps->dtim_count--;
+	if (!is_template) {
+		if (ps->dtim_count == 0)
+			ps->dtim_count = sdata->vif.bss_conf.dtim_period - 1;
+		else
+			ps->dtim_count--;
+	}
 
 	tim = pos = (u8 *) skb_put(skb, 6);
 	*pos++ = WLAN_EID_TIM;
@@ -2320,7 +2393,8 @@ static void __ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
 }
 
 static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
-				    struct ps_data *ps, struct sk_buff *skb)
+				    struct ps_data *ps, struct sk_buff *skb,
+				    bool is_template)
 {
 	struct ieee80211_local *local = sdata->local;
 
@@ -2332,60 +2406,92 @@ static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
 	 * of the tim bitmap in mac80211 and the driver.
 	 */
 	if (local->tim_in_locked_section) {
-		__ieee80211_beacon_add_tim(sdata, ps, skb);
+		__ieee80211_beacon_add_tim(sdata, ps, skb, is_template);
 	} else {
 		spin_lock_bh(&local->tim_lock);
-		__ieee80211_beacon_add_tim(sdata, ps, skb);
+		__ieee80211_beacon_add_tim(sdata, ps, skb, is_template);
 		spin_unlock_bh(&local->tim_lock);
 	}
 
 	return 0;
 }
 
-void ieee80211_csa_finish(struct ieee80211_vif *vif)
-{
-	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
-
-	ieee80211_queue_work(&sdata->local->hw,
-			     &sdata->csa_finalize_work);
-}
-EXPORT_SYMBOL(ieee80211_csa_finish);
-
-static void ieee80211_update_csa(struct ieee80211_sub_if_data *sdata,
-				 struct beacon_data *beacon)
+static void ieee80211_set_csa(struct ieee80211_sub_if_data *sdata,
+			      struct beacon_data *beacon)
 {
 	struct probe_resp *resp;
-	int counter_offset_beacon = sdata->csa_counter_offset_beacon;
-	int counter_offset_presp = sdata->csa_counter_offset_presp;
+	u8 *beacon_data;
+	size_t beacon_data_len;
+	int i;
+	u8 count = sdata->csa_current_counter;
 
-	/* warn if the driver did not check for/react to csa completeness */
-	if (WARN_ON(((u8 *)beacon->tail)[counter_offset_beacon] == 0))
+	switch (sdata->vif.type) {
+	case NL80211_IFTYPE_AP:
+		beacon_data = beacon->tail;
+		beacon_data_len = beacon->tail_len;
+		break;
+	case NL80211_IFTYPE_ADHOC:
+		beacon_data = beacon->head;
+		beacon_data_len = beacon->head_len;
+		break;
+	case NL80211_IFTYPE_MESH_POINT:
+		beacon_data = beacon->head;
+		beacon_data_len = beacon->head_len;
+		break;
+	default:
 		return;
+	}
+
+	for (i = 0; i < IEEE80211_MAX_CSA_COUNTERS_NUM; ++i) {
+		u16 counter_offset_beacon =
+			sdata->csa_counter_offset_beacon[i];
+		u16 counter_offset_presp = sdata->csa_counter_offset_presp[i];
 
-	((u8 *)beacon->tail)[counter_offset_beacon]--;
+		if (counter_offset_beacon) {
+			if (WARN_ON(counter_offset_beacon >= beacon_data_len))
+				return;
 
-	if (sdata->vif.type == NL80211_IFTYPE_AP &&
-	    counter_offset_presp) {
-		rcu_read_lock();
-		resp = rcu_dereference(sdata->u.ap.probe_resp);
+			beacon_data[counter_offset_beacon] = count;
+		}
 
-		/* if nl80211 accepted the offset, this should not happen. */
-		if (WARN_ON(!resp)) {
+		if (sdata->vif.type == NL80211_IFTYPE_AP &&
+		    counter_offset_presp) {
+			rcu_read_lock();
+			resp = rcu_dereference(sdata->u.ap.probe_resp);
+
+			/* If nl80211 accepted the offset, this should
+			 * not happen.
+			 */
+			if (WARN_ON(!resp)) {
+				rcu_read_unlock();
+				return;
+			}
+			resp->data[counter_offset_presp] = count;
 			rcu_read_unlock();
-			return;
 		}
-		resp->data[counter_offset_presp]--;
-		rcu_read_unlock();
 	}
 }
 
+u8 ieee80211_csa_update_counter(struct ieee80211_vif *vif)
+{
+	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+
+	sdata->csa_current_counter--;
+
+	/* the counter should never reach 0 */
+	WARN_ON(!sdata->csa_current_counter);
+
+	return sdata->csa_current_counter;
+}
+EXPORT_SYMBOL(ieee80211_csa_update_counter);
+
 bool ieee80211_csa_is_complete(struct ieee80211_vif *vif)
 {
 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
 	struct beacon_data *beacon = NULL;
 	u8 *beacon_data;
 	size_t beacon_data_len;
-	int counter_beacon = sdata->csa_counter_offset_beacon;
+	int counter_beacon = sdata->csa_counter_offset_beacon[0];
 	int ret = false;
 
 	if (!ieee80211_sdata_running(sdata))
@@ -2400,6 +2506,24 @@ bool ieee80211_csa_is_complete(struct ieee80211_vif *vif)
 			goto out;
 		beacon_data = beacon->tail;
 		beacon_data_len = beacon->tail_len;
+	} else if (vif->type == NL80211_IFTYPE_ADHOC) {
+		struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+
+		beacon = rcu_dereference(ifibss->presp);
+		if (!beacon)
+			goto out;
+
+		beacon_data = beacon->head;
+		beacon_data_len = beacon->head_len;
+	} else if (vif->type == NL80211_IFTYPE_MESH_POINT) {
+		struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
+
+		beacon = rcu_dereference(ifmsh->beacon);
+		if (!beacon)
+			goto out;
+
+		beacon_data = beacon->head;
+		beacon_data_len = beacon->head_len;
 	} else {
 		WARN_ON(1);
 		goto out;
@@ -2408,7 +2532,7 @@ bool ieee80211_csa_is_complete(struct ieee80211_vif *vif)
 	if (WARN_ON(counter_beacon > beacon_data_len))
 		goto out;
 
-	if (beacon_data[counter_beacon] == 0)
+	if (beacon_data[counter_beacon] == 1)
 		ret = true;
  out:
 	rcu_read_unlock();
@@ -2417,9 +2541,11 @@ bool ieee80211_csa_is_complete(struct ieee80211_vif *vif)
 }
 EXPORT_SYMBOL(ieee80211_csa_is_complete);
 
-struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
-					 struct ieee80211_vif *vif,
-					 u16 *tim_offset, u16 *tim_length)
+static struct sk_buff *
+__ieee80211_beacon_get(struct ieee80211_hw *hw,
+		       struct ieee80211_vif *vif,
+		       struct ieee80211_mutable_offsets *offs,
+		       bool is_template)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 	struct sk_buff *skb = NULL;
@@ -2428,6 +2554,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 	enum ieee80211_band band;
 	struct ieee80211_tx_rate_control txrc;
 	struct ieee80211_chanctx_conf *chanctx_conf;
+	int csa_off_base = 0;
 
 	rcu_read_lock();
 
@@ -2437,18 +2564,20 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 	if (!ieee80211_sdata_running(sdata) || !chanctx_conf)
 		goto out;
 
-	if (tim_offset)
-		*tim_offset = 0;
-	if (tim_length)
-		*tim_length = 0;
+	if (offs)
+		memset(offs, 0, sizeof(*offs));
 
 	if (sdata->vif.type == NL80211_IFTYPE_AP) {
 		struct ieee80211_if_ap *ap = &sdata->u.ap;
 		struct beacon_data *beacon = rcu_dereference(ap->beacon);
 
 		if (beacon) {
-			if (sdata->vif.csa_active)
-				ieee80211_update_csa(sdata, beacon);
+			if (sdata->vif.csa_active) {
+				if (!is_template)
+					ieee80211_csa_update_counter(vif);
+
+				ieee80211_set_csa(sdata, beacon);
+			}
 
 			/*
 			 * headroom, head length,
@@ -2456,7 +2585,8 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 			 */
 			skb = dev_alloc_skb(local->tx_headroom +
 					    beacon->head_len +
-					    beacon->tail_len + 256);
+					    beacon->tail_len + 256 +
+					    local->hw.extra_beacon_tailroom);
 			if (!skb)
 				goto out;
 
@@ -2464,12 +2594,16 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 			memcpy(skb_put(skb, beacon->head_len), beacon->head,
 			       beacon->head_len);
 
-			ieee80211_beacon_add_tim(sdata, &ap->ps, skb);
+			ieee80211_beacon_add_tim(sdata, &ap->ps, skb,
+						 is_template);
+
+			if (offs) {
+				offs->tim_offset = beacon->head_len;
+				offs->tim_length = skb->len - beacon->head_len;
 
-			if (tim_offset)
-				*tim_offset = beacon->head_len;
-			if (tim_length)
-				*tim_length = skb->len - beacon->head_len;
+				/* for AP the csa offsets are from tail */
+				csa_off_base = skb->len;
+			}
 
 			if (beacon->tail)
 				memcpy(skb_put(skb, beacon->tail_len),
@@ -2484,7 +2618,15 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 		if (!presp)
 			goto out;
 
-		skb = dev_alloc_skb(local->tx_headroom + presp->head_len);
+		if (sdata->vif.csa_active) {
+			if (!is_template)
+				ieee80211_csa_update_counter(vif);
+
+			ieee80211_set_csa(sdata, presp);
+		}
+
+		skb = dev_alloc_skb(local->tx_headroom + presp->head_len +
+				    local->hw.extra_beacon_tailroom);
 		if (!skb)
 			goto out;
 		skb_reserve(skb, local->tx_headroom);
@@ -2501,25 +2643,57 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
 		if (!bcn)
 			goto out;
 
+		if (sdata->vif.csa_active) {
+			if (!is_template)
+				/* TODO: For mesh csa_counter is in TU, so
+				 * decrementing it by one isn't correct, but
+				 * for now we leave it consistent with overall
+				 * mac80211's behavior.
+				 */
+				ieee80211_csa_update_counter(vif);
+
+			ieee80211_set_csa(sdata, bcn);
+		}
+
 		if (ifmsh->sync_ops)
-			ifmsh->sync_ops->adjust_tbtt(
-						sdata);
+			ifmsh->sync_ops->adjust_tbtt(sdata, bcn);
 
 		skb = dev_alloc_skb(local->tx_headroom +
 				    bcn->head_len +
 				    256 + /* TIM IE */
-				    bcn->tail_len);
+				    bcn->tail_len +
+				    local->hw.extra_beacon_tailroom);
 		if (!skb)
 			goto out;
 		skb_reserve(skb, local->tx_headroom);
 		memcpy(skb_put(skb, bcn->head_len), bcn->head, bcn->head_len);
-		ieee80211_beacon_add_tim(sdata, &ifmsh->ps, skb);
+		ieee80211_beacon_add_tim(sdata, &ifmsh->ps, skb, is_template);
+
+		if (offs) {
+			offs->tim_offset = bcn->head_len;
+			offs->tim_length = skb->len - bcn->head_len;
+		}
+
 		memcpy(skb_put(skb, bcn->tail_len), bcn->tail, bcn->tail_len);
 	} else {
 		WARN_ON(1);
 		goto out;
 	}
 
+	/* CSA offsets */
+	if (offs) {
+		int i;
+
+		for (i = 0; i < IEEE80211_MAX_CSA_COUNTERS_NUM; i++) {
+			u16 csa_off = sdata->csa_counter_offset_beacon[i];
+
+			if (!csa_off)
+				continue;
+
+			offs->csa_counter_offs[i] = csa_off_base + csa_off;
+		}
+	}
+
 	band = chanctx_conf->def.chan->band;
 
 	info = IEEE80211_SKB_CB(skb);
@@ -2550,6 +2724,32 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
  out:
 	rcu_read_unlock();
 	return skb;
+
+}
+
+struct sk_buff *
+ieee80211_beacon_get_template(struct ieee80211_hw *hw,
+			      struct ieee80211_vif *vif,
+			      struct ieee80211_mutable_offsets *offs)
+{
+	return __ieee80211_beacon_get(hw, vif, offs, true);
+}
+EXPORT_SYMBOL(ieee80211_beacon_get_template);
+
+struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
+					 struct ieee80211_vif *vif,
+					 u16 *tim_offset, u16 *tim_length)
+{
+	struct ieee80211_mutable_offsets offs = {};
+	struct sk_buff *bcn = __ieee80211_beacon_get(hw, vif, &offs, false);
+
+	if (tim_offset)
+		*tim_offset = offs.tim_offset;
+
+	if (tim_length)
+		*tim_length = offs.tim_length;
+
+	return bcn;
 }
 EXPORT_SYMBOL(ieee80211_beacon_get_tim);
 
@@ -2787,7 +2987,7 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw,
 				cpu_to_le16(IEEE80211_FCTL_MOREDATA);
 		}
 
-		if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+		if (sdata->vif.type == NL80211_IFTYPE_AP)
 			sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev);
 		if (!ieee80211_tx_prepare(sdata, &tx, skb))
 			break;