1 files changed, 5 insertions, 0 deletions

diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c
index a2b68a108eae..55aeec930140 100644
--- a/net/ipv4/tcp_offload.c
+++ b/net/ipv4/tcp_offload.c
@@ -276,6 +276,10 @@ static struct sk_buff **tcp4_gro_receive(struct sk_buff **head, struct sk_buff *
         __wsum wsum;
         __sum16 sum;
 
+        /* Don't bother verifying checksum if we're going to flush anyway. */
+        if (NAPI_GRO_CB(skb)->flush)
+                goto skip_csum;
+
         switch (skb->ip_summed) {
         case CHECKSUM_COMPLETE:
                 if (!tcp_v4_check(skb_gro_len(skb), iph->saddr, iph->daddr,
@@ -301,6 +305,7 @@ flush:
                 break;
         }
 
+skip_csum:
         return tcp_gro_receive(head, skb);
 }