1 files changed, 0 insertions, 58 deletions
diff --git a/package/kernel/mac80211/patches/subsys/311-mac80211-fix-memory-accounting-with-A-MSDU-aggregati.patch b/package/kernel/mac80211/patches/subsys/311-mac80211-fix-memory-accounting-with-A-MSDU-aggregati.patch
deleted file mode 100644
index 1fd2b25271..0000000000
--- a/package/kernel/mac80211/patches/subsys/311-mac80211-fix-memory-accounting-with-A-MSDU-aggregati.patch
+++ /dev/null
@@ -1,58 +0,0 @@
-From: Felix Fietkau <nbd@nbd.name>
-Date: Thu, 8 Mar 2018 21:00:56 +0100
-Subject: [PATCH] mac80211: fix memory accounting with A-MSDU aggregation
-
-fq uses skb->truesize for memory usage tracking. Increments/decrements
-are done on enqueue/dequeue.
-When A-MSDU aggregation is performed on tx side, the packet is
-aggregated with the last packet in the queue belonging to the same flow.
-There are multiple bugs here:
-- The truesize field of the aggregated packet isn't updated, so memory
-usage is underestimated
-- fq->memory_usage isn't adjusted.
-
-Because of the combination of both bugs, this only causes tx issues in
-rare cases, mainly when the A-MSDU head needs to be reallocated.
-
-Fix this by adjusting both truesize of the A-MSDU head and adding the
-truesize delta to fq->memory_usage.
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/tx.c
-+++ b/net/mac80211/tx.c
-@@ -3185,6 +3185,7 @@ static bool ieee80211_amsdu_aggregate(st
- 	u8 max_subframes = sta->sta.max_amsdu_subframes;
- 	int max_frags = local->hw.max_tx_fragments;
- 	int max_amsdu_len = sta->sta.max_amsdu_len;
-+	int orig_truesize;
- 	__be16 len;
- 	void *data;
- 	bool ret = false;
-@@ -3216,12 +3217,13 @@ static bool ieee80211_amsdu_aggregate(st
- 	flow = fq_flow_classify(fq, tin, skb, fq_flow_get_default_func);
- 	head = skb_peek_tail(&flow->queue);
- 	if (!head)
--		goto out;
-+		goto unlock;
- 
-+	orig_truesize = head->truesize;
- 	orig_len = head->len;
- 
- 	if (skb->len + head->len > max_amsdu_len)
--		goto out;
-+		goto unlock;
- 
- 	nfrags = 1 + skb_shinfo(skb)->nr_frags;
- 	nfrags += 1 + skb_shinfo(head)->nr_frags;
-@@ -3279,6 +3281,9 @@ out_recalc:
- 		fq_recalc_backlog(fq, tin, flow);
- 	}
- out:
-+	fq->memory_usage += head->truesize - orig_truesize;
-+
-+unlock:
- 	spin_unlock_bh(&fq->lock);
- 
- 	return ret;