mac80211: fix packet loss on fq reordering

Signed-off-by: Felix Fietkau <nbd@nbd.name>

3 files changed, 481 insertions, 110 deletions

diff --git a/package/kernel/mac80211/patches/346-mac80211-Move-reorder-sensitive-TX-handlers-to-after.patch b/package/kernel/mac80211/patches/346-mac80211-Move-reorder-sensitive-TX-handlers-to-after.patch
new file mode 100644
index 0000000..8ceed51
--- /dev/null
+++ b/package/kernel/mac80211/patches/346-mac80211-Move-reorder-sensitive-TX-handlers-to-after.patch
@@ -0,0 +1,478 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 4 Sep 2016 17:46:24 +0200
+Subject: [PATCH] mac80211: fix sequence number assignment for PS response
+ frames
+
+When using intermediate queues, sequence number allocation is deferred
+until dequeue. This doesn't work for PS response frames, which bypass
+those queues.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -38,6 +38,12 @@
+ #include "wme.h"
+ #include "rate.h"
+ 
++static int invoke_tx_handlers_late(struct ieee80211_tx_data *tx);
++static bool ieee80211_xmit_fast_finish(struct ieee80211_sub_if_data *sdata,
++				       struct sta_info *sta, u8 pn_offs,
++				       struct ieee80211_key_conf *key_conf,
++				       struct sk_buff *skb);
++
+ /* misc utils */
+ 
+ static inline void ieee80211_tx_stats(struct net_device *dev, u32 len)
+@@ -849,8 +855,7 @@ ieee80211_tx_h_sequence(struct ieee80211
+ 	tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
+ 	tx->sta->tx_stats.msdu[tid]++;
+ 
+-	if (!tx->sta->sta.txq[0])
+-		hdr->seq_ctrl = ieee80211_tx_next_seq(tx->sta, tid);
++	hdr->seq_ctrl = ieee80211_tx_next_seq(tx->sta, tid);
+ 
+ 	return TX_CONTINUE;
+ }
+@@ -1398,6 +1403,7 @@ void ieee80211_txq_init(struct ieee80211
+ 	fq_tin_init(&txqi->tin);
+ 	fq_flow_init(&txqi->def_flow);
+ 	codel_vars_init(&txqi->def_cvars);
++	__skb_queue_head_init(&txqi->frags);
+ 
+ 	txqi->txq.vif = &sdata->vif;
+ 
+@@ -1420,6 +1426,7 @@ void ieee80211_txq_purge(struct ieee8021
+ 	struct fq_tin *tin = &txqi->tin;
+ 
+ 	fq_tin_reset(fq, tin, fq_skb_free_func);
++	ieee80211_purge_tx_queue(&local->hw, &txqi->frags);
+ }
+ 
+ int ieee80211_txq_setup_flows(struct ieee80211_local *local)
+@@ -1476,12 +1483,19 @@ struct sk_buff *ieee80211_tx_dequeue(str
+ 	struct sk_buff *skb = NULL;
+ 	struct fq *fq = &local->fq;
+ 	struct fq_tin *tin = &txqi->tin;
++	struct ieee80211_tx_info *info;
+ 
+ 	spin_lock_bh(&fq->lock);
+ 
+ 	if (test_bit(IEEE80211_TXQ_STOP, &txqi->flags))
+ 		goto out;
+ 
++	/* Make sure fragments stay together. */
++	skb = __skb_dequeue(&txqi->frags);
++	if (skb)
++		goto out;
++
++begin:
+ 	skb = fq_tin_dequeue(fq, tin, fq_tin_dequeue_func);
+ 	if (!skb)
+ 		goto out;
+@@ -1489,16 +1503,38 @@ struct sk_buff *ieee80211_tx_dequeue(str
+ 	ieee80211_set_skb_vif(skb, txqi);
+ 
+ 	hdr = (struct ieee80211_hdr *)skb->data;
+-	if (txq->sta && ieee80211_is_data_qos(hdr->frame_control)) {
++	info = IEEE80211_SKB_CB(skb);
++	if (txq->sta && info->control.flags & IEEE80211_TX_CTRL_FAST_XMIT) {
+ 		struct sta_info *sta = container_of(txq->sta, struct sta_info,
+ 						    sta);
+-		struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
++		u8 pn_offs = 0;
+ 
+-		hdr->seq_ctrl = ieee80211_tx_next_seq(sta, txq->tid);
+-		if (test_bit(IEEE80211_TXQ_AMPDU, &txqi->flags))
+-			info->flags |= IEEE80211_TX_CTL_AMPDU;
+-		else
+-			info->flags &= ~IEEE80211_TX_CTL_AMPDU;
++		if (info->control.hw_key)
++			pn_offs = ieee80211_padded_hdrlen(hw, hdr->frame_control);
++
++		ieee80211_xmit_fast_finish(sta->sdata, sta, pn_offs,
++					   info->control.hw_key, skb);
++	} else {
++		struct ieee80211_tx_data tx = { };
++
++		__skb_queue_head_init(&tx.skbs);
++		tx.local = local;
++		tx.skb = skb;
++		tx.hdrlen = ieee80211_padded_hdrlen(hw, hdr->frame_control);
++		if (txq->sta) {
++			tx.sta = container_of(txq->sta, struct sta_info, sta);
++			tx.sdata = tx.sta->sdata;
++		} else {
++			tx.sdata = vif_to_sdata(info->control.vif);
++		}
++
++		if (invoke_tx_handlers_late(&tx))
++			goto begin;
++
++		skb = __skb_dequeue(&tx.skbs);
++
++		if (!skb_queue_empty(&tx.skbs))
++			skb_queue_splice_tail(&tx.skbs, &txqi->frags);
+ 	}
+ 
+ out:
+@@ -1512,6 +1548,47 @@ out:
+ }
+ EXPORT_SYMBOL(ieee80211_tx_dequeue);
+ 
++static bool ieee80211_queue_skb(struct ieee80211_local *local,
++				struct ieee80211_sub_if_data *sdata,
++				struct sta_info *sta,
++				struct sk_buff *skb)
++{
++	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
++	struct fq *fq = &local->fq;
++	struct ieee80211_vif *vif;
++	struct txq_info *txqi;
++	struct ieee80211_sta *pubsta;
++
++	if (!local->ops->wake_tx_queue ||
++	    sdata->vif.type == NL80211_IFTYPE_MONITOR)
++		return false;
++
++	if (sta && sta->uploaded)
++		pubsta = &sta->sta;
++	else
++		pubsta = NULL;
++
++	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
++		sdata = container_of(sdata->bss,
++				     struct ieee80211_sub_if_data, u.ap);
++
++	vif = &sdata->vif;
++	txqi = ieee80211_get_txq(local, vif, pubsta, skb);
++
++	if (!txqi)
++		return false;
++
++	info->control.vif = vif;
++
++	spin_lock_bh(&fq->lock);
++	ieee80211_txq_enqueue(local, txqi, skb);
++	spin_unlock_bh(&fq->lock);
++
++	drv_wake_tx_queue(local, txqi);
++
++	return true;
++}
++
+ static bool ieee80211_tx_frags(struct ieee80211_local *local,
+ 			       struct ieee80211_vif *vif,
+ 			       struct ieee80211_sta *sta,
+@@ -1519,9 +1596,7 @@ static bool ieee80211_tx_frags(struct ie
+ 			       bool txpending)
+ {
+ 	struct ieee80211_tx_control control = {};
+-	struct fq *fq = &local->fq;
+ 	struct sk_buff *skb, *tmp;
+-	struct txq_info *txqi;
+ 	unsigned long flags;
+ 
+ 	skb_queue_walk_safe(skbs, skb, tmp) {
+@@ -1536,21 +1611,6 @@ static bool ieee80211_tx_frags(struct ie
+ 		}
+ #endif
+ 
+-		txqi = ieee80211_get_txq(local, vif, sta, skb);
+-		if (txqi) {
+-			info->control.vif = vif;
+-
+-			__skb_unlink(skb, skbs);
+-
+-			spin_lock_bh(&fq->lock);
+-			ieee80211_txq_enqueue(local, txqi, skb);
+-			spin_unlock_bh(&fq->lock);
+-
+-			drv_wake_tx_queue(local, txqi);
+-
+-			continue;
+-		}
+-
+ 		spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
+ 		if (local->queue_stop_reasons[q] ||
+ 		    (!txpending && !skb_queue_empty(&local->pending[q]))) {
+@@ -1671,10 +1731,13 @@ static bool __ieee80211_tx(struct ieee80
+ /*
+  * Invoke TX handlers, return 0 on success and non-zero if the
+  * frame was dropped or queued.
++ *
++ * The handlers are split into an early and late part. The latter is everything
++ * that can be sensitive to reordering, and will be deferred to after packets
++ * are dequeued from the intermediate queues (when they are enabled).
+  */
+-static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
++static int invoke_tx_handlers_early(struct ieee80211_tx_data *tx)
+ {
+-	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
+ 	ieee80211_tx_result res = TX_DROP;
+ 
+ #define CALL_TXH(txh) \
+@@ -1688,16 +1751,42 @@ static int invoke_tx_handlers(struct iee
+ 	CALL_TXH(ieee80211_tx_h_check_assoc);
+ 	CALL_TXH(ieee80211_tx_h_ps_buf);
+ 	CALL_TXH(ieee80211_tx_h_check_control_port_protocol);
+-	CALL_TXH(ieee80211_tx_h_select_key);
++
+ 	if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL))
+ 		CALL_TXH(ieee80211_tx_h_rate_ctrl);
+ 
++ txh_done:
++	if (unlikely(res == TX_DROP)) {
++		I802_DEBUG_INC(tx->local->tx_handlers_drop);
++		if (tx->skb)
++			ieee80211_free_txskb(&tx->local->hw, tx->skb);
++		else
++			ieee80211_purge_tx_queue(&tx->local->hw, &tx->skbs);
++		return -1;
++	} else if (unlikely(res == TX_QUEUED)) {
++		I802_DEBUG_INC(tx->local->tx_handlers_queued);
++		return -1;
++	}
++
++	return 0;
++}
++
++/*
++ * Late handlers can be called while the sta lock is held. Handlers that can
++ * cause packets to be generated will cause deadlock!
++ */
++static int invoke_tx_handlers_late(struct ieee80211_tx_data *tx)
++{
++	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
++	ieee80211_tx_result res = TX_CONTINUE;
++
+ 	if (unlikely(info->flags & IEEE80211_TX_INTFL_RETRANSMISSION)) {
+ 		__skb_queue_tail(&tx->skbs, tx->skb);
+ 		tx->skb = NULL;
+ 		goto txh_done;
+ 	}
+ 
++	CALL_TXH(ieee80211_tx_h_select_key);
+ 	CALL_TXH(ieee80211_tx_h_michael_mic_add);
+ 	CALL_TXH(ieee80211_tx_h_sequence);
+ 	CALL_TXH(ieee80211_tx_h_fragment);
+@@ -1724,6 +1813,15 @@ static int invoke_tx_handlers(struct iee
+ 	return 0;
+ }
+ 
++static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
++{
++	int r = invoke_tx_handlers_early(tx);
++	if (r)
++		return r;
++
++	return invoke_tx_handlers_late(tx);
++}
++
+ bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
+ 			      struct ieee80211_vif *vif, struct sk_buff *skb,
+ 			      int band, struct ieee80211_sta **sta)
+@@ -1798,7 +1896,13 @@ static bool ieee80211_tx(struct ieee8021
+ 		info->hw_queue =
+ 			sdata->vif.hw_queue[skb_get_queue_mapping(skb)];
+ 
+-	if (!invoke_tx_handlers(&tx))
++	if (invoke_tx_handlers_early(&tx))
++		return false;
++
++	if (ieee80211_queue_skb(local, sdata, tx.sta, tx.skb))
++		return true;
++
++	if (!invoke_tx_handlers_late(&tx))
+ 		result = __ieee80211_tx(local, &tx.skbs, led_len,
+ 					tx.sta, txpending);
+ 
+@@ -3181,7 +3285,7 @@ out:
+ }
+ 
+ static bool ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
+-				struct net_device *dev, struct sta_info *sta,
++				struct sta_info *sta,
+ 				struct ieee80211_fast_tx *fast_tx,
+ 				struct sk_buff *skb)
+ {
+@@ -3192,9 +3296,9 @@ static bool ieee80211_xmit_fast(struct i
+ 	struct ethhdr eth;
+ 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ 	struct ieee80211_hdr *hdr = (void *)fast_tx->hdr;
+-	struct ieee80211_tx_data tx;
+-	ieee80211_tx_result r;
+ 	struct tid_ampdu_tx *tid_tx = NULL;
++	ieee80211_tx_result r;
++	struct ieee80211_tx_data tx;
+ 	u8 tid = IEEE80211_NUM_TIDS;
+ 
+ 	/* control port protocol needs a lot of special handling */
+@@ -3232,8 +3336,6 @@ static bool ieee80211_xmit_fast(struct i
+ 			return true;
+ 	}
+ 
+-	ieee80211_tx_stats(dev, skb->len + extra_head);
+-
+ 	if ((hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) &&
+ 	    ieee80211_amsdu_aggregate(sdata, sta, fast_tx, skb))
+ 		return true;
+@@ -3262,24 +3364,7 @@ static bool ieee80211_xmit_fast(struct i
+ 	info->flags = IEEE80211_TX_CTL_FIRST_FRAGMENT |
+ 		      IEEE80211_TX_CTL_DONTFRAG |
+ 		      (tid_tx ? IEEE80211_TX_CTL_AMPDU : 0);
+-
+-	if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
+-		*ieee80211_get_qos_ctl(hdr) = tid;
+-		if (!sta->sta.txq[0])
+-			hdr->seq_ctrl = ieee80211_tx_next_seq(sta, tid);
+-	} else {
+-		info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
+-		hdr->seq_ctrl = cpu_to_le16(sdata->sequence_number);
+-		sdata->sequence_number += 0x10;
+-	}
+-
+-	if (skb_shinfo(skb)->gso_size)
+-		sta->tx_stats.msdu[tid] +=
+-			DIV_ROUND_UP(skb->len, skb_shinfo(skb)->gso_size);
+-	else
+-		sta->tx_stats.msdu[tid]++;
+-
+-	info->hw_queue = sdata->vif.hw_queue[skb_get_queue_mapping(skb)];
++	info->control.flags = IEEE80211_TX_CTRL_FAST_XMIT;
+ 
+ 	__skb_queue_head_init(&tx.skbs);
+ 
+@@ -3305,22 +3390,71 @@ static bool ieee80211_xmit_fast(struct i
+ 		}
+ 	}
+ 
++	if (ieee80211_queue_skb(local, sdata, sta, skb))
++		return true;
++
++	ieee80211_xmit_fast_finish(sdata, sta, fast_tx->pn_offs,
++				   &fast_tx->key->conf, skb);
++
++	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
++		sdata = container_of(sdata->bss,
++				     struct ieee80211_sub_if_data, u.ap);
++
++	__skb_queue_tail(&tx.skbs, skb);
++	ieee80211_tx_frags(local, &sdata->vif, &sta->sta, &tx.skbs, false);
++
++	return true;
++}
++
++/*
++ * Can be called while the sta lock is held. Anything that can cause packets to
++ * be generated will cause deadlock!
++ */
++static bool ieee80211_xmit_fast_finish(struct ieee80211_sub_if_data *sdata,
++				       struct sta_info *sta, u8 pn_offs,
++				       struct ieee80211_key_conf *key_conf,
++				       struct sk_buff *skb)
++{
++	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
++	struct ieee80211_hdr *hdr = (void *)skb->data;
++	u8 tid = IEEE80211_NUM_TIDS;
++
++	ieee80211_tx_stats(skb->dev, skb->len);
++
++	if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
++		tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
++		*ieee80211_get_qos_ctl(hdr) = tid;
++		hdr->seq_ctrl = ieee80211_tx_next_seq(sta, tid);
++	} else {
++		info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
++		hdr->seq_ctrl = cpu_to_le16(sdata->sequence_number);
++		sdata->sequence_number += 0x10;
++	}
++
++	if (skb_shinfo(skb)->gso_size)
++		sta->tx_stats.msdu[tid] +=
++			DIV_ROUND_UP(skb->len, skb_shinfo(skb)->gso_size);
++	else
++		sta->tx_stats.msdu[tid]++;
++
++	info->hw_queue = sdata->vif.hw_queue[skb_get_queue_mapping(skb)];
++
+ 	/* statistics normally done by ieee80211_tx_h_stats (but that
+ 	 * has to consider fragmentation, so is more complex)
+ 	 */
+ 	sta->tx_stats.bytes[skb_get_queue_mapping(skb)] += skb->len;
+ 	sta->tx_stats.packets[skb_get_queue_mapping(skb)]++;
+ 
+-	if (fast_tx->pn_offs) {
++	if (pn_offs) {
+ 		u64 pn;
+-		u8 *crypto_hdr = skb->data + fast_tx->pn_offs;
++		u8 *crypto_hdr = skb->data + pn_offs;
+ 
+-		switch (fast_tx->key->conf.cipher) {
++		switch (key_conf->cipher) {
+ 		case WLAN_CIPHER_SUITE_CCMP:
+ 		case WLAN_CIPHER_SUITE_CCMP_256:
+ 		case WLAN_CIPHER_SUITE_GCMP:
+ 		case WLAN_CIPHER_SUITE_GCMP_256:
+-			pn = atomic64_inc_return(&fast_tx->key->conf.tx_pn);
++			pn = atomic64_inc_return(&key_conf->tx_pn);
+ 			crypto_hdr[0] = pn;
+ 			crypto_hdr[1] = pn >> 8;
+ 			crypto_hdr[4] = pn >> 16;
+@@ -3331,12 +3465,6 @@ static bool ieee80211_xmit_fast(struct i
+ 		}
+ 	}
+ 
+-	if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+-		sdata = container_of(sdata->bss,
+-				     struct ieee80211_sub_if_data, u.ap);
+-
+-	__skb_queue_tail(&tx.skbs, skb);
+-	ieee80211_tx_frags(local, &sdata->vif, &sta->sta, &tx.skbs, false);
+ 	return true;
+ }
+ 
+@@ -3364,7 +3492,7 @@ void __ieee80211_subif_start_xmit(struct
+ 		fast_tx = rcu_dereference(sta->fast_tx);
+ 
+ 		if (fast_tx &&
+-		    ieee80211_xmit_fast(sdata, dev, sta, fast_tx, skb))
++		    ieee80211_xmit_fast(sdata, sta, fast_tx, skb))
+ 			goto out;
+ 	}
+ 
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -715,6 +715,7 @@ enum mac80211_tx_info_flags {
+  *	frame (PS-Poll or uAPSD).
+  * @IEEE80211_TX_CTRL_RATE_INJECT: This frame is injected with rate information
+  * @IEEE80211_TX_CTRL_AMSDU: This frame is an A-MSDU frame
++ * @IEEE80211_TX_CTRL_FAST_XMIT: This frame is going through the fast_xmit path
+  *
+  * These flags are used in tx_info->control.flags.
+  */
+@@ -723,6 +724,7 @@ enum mac80211_tx_control_flags {
+ 	IEEE80211_TX_CTRL_PS_RESPONSE		= BIT(1),
+ 	IEEE80211_TX_CTRL_RATE_INJECT		= BIT(2),
+ 	IEEE80211_TX_CTRL_AMSDU			= BIT(3),
++	IEEE80211_TX_CTRL_FAST_XMIT		= BIT(4),
+ };
+ 
+ /*
+--- a/net/mac80211/ieee80211_i.h
++++ b/net/mac80211/ieee80211_i.h
+@@ -814,11 +814,13 @@ enum txq_info_flags {
+  * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
+  *	a fq_flow which is already owned by a different tin
+  * @def_cvars: codel vars for @def_flow
++ * @frags: used to keep fragments created after dequeue
+  */
+ struct txq_info {
+ 	struct fq_tin tin;
+ 	struct fq_flow def_flow;
+ 	struct codel_vars def_cvars;
++	struct sk_buff_head frags;
+ 	unsigned long flags;
+ 
+ 	/* keep last! */
diff --git a/package/kernel/mac80211/patches/346-mac80211-fix-sequence-number-assignment-for-PS-respo.patch b/package/kernel/mac80211/patches/346-mac80211-fix-sequence-number-assignment-for-PS-respo.patch
deleted file mode 100644
index a82d12f..0000000
--- a/package/kernel/mac80211/patches/346-mac80211-fix-sequence-number-assignment-for-PS-respo.patch
+++ /dev/null
@@ -1,107 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Date: Sun, 4 Sep 2016 17:46:24 +0200
-Subject: [PATCH] mac80211: fix sequence number assignment for PS response
- frames
-
-When using intermediate queues, sequence number allocation is deferred
-until dequeue. This doesn't work for PS response frames, which bypass
-those queues.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/tx.c
-+++ b/net/mac80211/tx.c
-@@ -792,6 +792,36 @@ static __le16 ieee80211_tx_next_seq(stru
- 	return ret;
- }
- 
-+static struct txq_info *ieee80211_get_txq(struct ieee80211_local *local,
-+					  struct ieee80211_vif *vif,
-+					  struct ieee80211_sta *pubsta,
-+					  struct sk_buff *skb)
-+{
-+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
-+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-+	struct ieee80211_txq *txq = NULL;
-+
-+	if ((info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) ||
-+	    (info->control.flags & IEEE80211_TX_CTRL_PS_RESPONSE))
-+		return NULL;
-+
-+	if (!ieee80211_is_data(hdr->frame_control))
-+		return NULL;
-+
-+	if (pubsta) {
-+		u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
-+
-+		txq = pubsta->txq[tid];
-+	} else if (vif) {
-+		txq = vif->txq;
-+	}
-+
-+	if (!txq)
-+		return NULL;
-+
-+	return to_txq_info(txq);
-+}
-+
- static ieee80211_tx_result debug_noinline
- ieee80211_tx_h_sequence(struct ieee80211_tx_data *tx)
- {
-@@ -849,7 +879,8 @@ ieee80211_tx_h_sequence(struct ieee80211
- 	tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
- 	tx->sta->tx_stats.msdu[tid]++;
- 
--	if (!tx->sta->sta.txq[0])
-+	if (!ieee80211_get_txq(tx->local, info->control.vif, &tx->sta->sta,
-+			       tx->skb))
- 		hdr->seq_ctrl = ieee80211_tx_next_seq(tx->sta, tid);
- 
- 	return TX_CONTINUE;
-@@ -1238,36 +1269,6 @@ ieee80211_tx_prepare(struct ieee80211_su
- 	return TX_CONTINUE;
- }
- 
--static struct txq_info *ieee80211_get_txq(struct ieee80211_local *local,
--					  struct ieee80211_vif *vif,
--					  struct ieee80211_sta *pubsta,
--					  struct sk_buff *skb)
--{
--	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
--	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
--	struct ieee80211_txq *txq = NULL;
--
--	if ((info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) ||
--	    (info->control.flags & IEEE80211_TX_CTRL_PS_RESPONSE))
--		return NULL;
--
--	if (!ieee80211_is_data(hdr->frame_control))
--		return NULL;
--
--	if (pubsta) {
--		u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
--
--		txq = pubsta->txq[tid];
--	} else if (vif) {
--		txq = vif->txq;
--	}
--
--	if (!txq)
--		return NULL;
--
--	return to_txq_info(txq);
--}
--
- static void ieee80211_set_skb_enqueue_time(struct sk_buff *skb)
- {
- 	IEEE80211_SKB_CB(skb)->control.enqueue_time = codel_get_time();
-@@ -3265,7 +3266,7 @@ static bool ieee80211_xmit_fast(struct i
- 
- 	if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
- 		*ieee80211_get_qos_ctl(hdr) = tid;
--		if (!sta->sta.txq[0])
-+		if (!ieee80211_get_txq(local, &sdata->vif, &sta->sta, skb))
- 			hdr->seq_ctrl = ieee80211_tx_next_seq(sta, tid);
- 	} else {
- 		info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
diff --git a/package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch b/package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch
index c40598d..aba065e 100644
--- a/package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch
+++ b/package/kernel/mac80211/patches/522-mac80211_configure_antenna_gain.patch
@@ -18,7 +18,7 @@
  				const u8 *addr);
 --- a/include/net/mac80211.h
 +++ b/include/net/mac80211.h
-@@ -1317,6 +1317,7 @@ enum ieee80211_smps_mode {
+@@ -1319,6 +1319,7 @@ enum ieee80211_smps_mode {
   *
   * @power_level: requested transmit power (in dBm), backward compatibility
   *	value only that is set to the minimum of all interfaces
@@ -26,7 +26,7 @@
   *
   * @chandef: the channel definition to tune to
   * @radar_enabled: whether radar detection is enabled
-@@ -1337,6 +1338,7 @@ enum ieee80211_smps_mode {
+@@ -1339,6 +1340,7 @@ enum ieee80211_smps_mode {
  struct ieee80211_conf {
  	u32 flags;
  	int power_level, dynamic_ps_timeout;
@@ -87,7 +87,7 @@
  	CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
 --- a/net/mac80211/ieee80211_i.h
 +++ b/net/mac80211/ieee80211_i.h
-@@ -1338,6 +1338,7 @@ struct ieee80211_local {
+@@ -1340,6 +1340,7 @@ struct ieee80211_local {
  	int dynamic_ps_forced_timeout;
  
  	int user_power_level; /* in dBm, for all interfaces */