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38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
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From: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
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Date: Wed, 29 Aug 2018 21:03:25 +0200
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Subject: [PATCH] mac80211: do not convert to A-MSDU if frag/subframe
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limited
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Do not start to aggregate packets in a A-MSDU frame (converting the
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first subframe to A-MSDU, adding the header) if max_tx_fragments or
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max_amsdu_subframes limits are already exceeded by it. In particular,
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this happens when drivers set the limit to 1 to avoid A-MSDUs at all.
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Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
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[reword commit message to be more precise]
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Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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---
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--- a/net/mac80211/tx.c
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+++ b/net/mac80211/tx.c
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@@ -3201,9 +3201,6 @@ static bool ieee80211_amsdu_aggregate(st
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if (skb->len + head->len > max_amsdu_len)
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goto unlock;
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- if (!ieee80211_amsdu_prepare_head(sdata, fast_tx, head))
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- goto out;
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-
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nfrags = 1 + skb_shinfo(skb)->nr_frags;
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nfrags += 1 + skb_shinfo(head)->nr_frags;
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frag_tail = &skb_shinfo(head)->frag_list;
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@@ -3219,6 +3216,9 @@ static bool ieee80211_amsdu_aggregate(st
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if (max_frags && nfrags > max_frags)
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goto out;
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+ if (!ieee80211_amsdu_prepare_head(sdata, fast_tx, head))
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+ goto out;
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+
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/*
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* Pad out the previous subframe to a multiple of 4 by adding the
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* padding to the next one, that's being added. Note that head->len
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