If the skb is not cloned and we don't need any extra headroom, there
is no point in reallocating the skb head.
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
---
net/mac80211/tx.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 7d78aca..56ae175 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1549,8 +1549,10 @@ static int ieee80211_skb_resize(struct ieee80211_local *local,
if (skb_header_cloned(skb))
I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
- else
+ else if (head_need || tail_need)
I802_DEBUG_INC(local->tx_expand_skb_head);
+ else
+ return 0;
if (pskb_expand_head(skb, head_need, tail_need, GFP_ATOMIC)) {
wiphy_debug(local->hw.wiphy,
--
1.7.3.2
--
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