tcp: Optimise GRO port comparisons

Instead of doing two 16-bit operations for the source/destination
ports, we can do one 32-bit operation to take care both.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 7a0f0b27bf1f..ff6adecc54c6 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2544,7 +2544,7 @@ struct sk_buff **tcp_gro_receive(struct sk_buff **head, struct sk_buff *skb)
 
                 th2 = tcp_hdr(p);
 
-                if ((th->source ^ th2->source) | (th->dest ^ th2->dest)) {
+                if (*(u32 *)&th->source ^ *(u32 *)&th2->source) {
                         NAPI_GRO_CB(p)->same_flow = 0;
                         continue;
                 }