tcp: Remove unnecessary window comparisons for GRO

The window has already been checked as part of the flag word
so there is no need to check it explicitly.

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

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index ff6adec..313960e 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2559,7 +2559,7 @@ found:
        flush |= flags & TCP_FLAG_CWR;
        flush |= (flags ^ tcp_flag_word(th2)) &
                  ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH);
-       flush |= (th->ack_seq ^ th2->ack_seq) | (th->window ^ th2->window);
+       flush |= th->ack_seq ^ th2->ack_seq;
        for (i = sizeof(*th); !flush && i < thlen; i += 4)
                flush |= *(u32 *)((u8 *)th + i) ^
                         *(u32 *)((u8 *)th2 + i);