mlx4_en: Handle page allocation failure during receive
If we failed to allocate new fragments for receive buffer,
the packet should be dropped and packets should be reused.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/mlx4/en_rx.c b/drivers/net/mlx4/en_rx.c
index 0cbb78c..7942c4d 100644
--- a/drivers/net/mlx4/en_rx.c
+++ b/drivers/net/mlx4/en_rx.c
@@ -610,6 +610,10 @@
used_frags = mlx4_en_complete_rx_desc(priv, rx_desc, skb_frags,
skb_shinfo(skb)->frags,
page_alloc, length);
+ if (unlikely(!used_frags)) {
+ kfree_skb(skb);
+ return NULL;
+ }
skb_shinfo(skb)->nr_frags = used_frags;
/* Copy headers into the skb linear buffer */