tcp: Remove unnecessary window comparisons for GRO
authorHerbert Xu <herbert@gondor.apana.org.au>
Tue, 26 May 2009 18:50:25 +0000 (18:50 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 27 May 2009 10:25:59 +0000 (03:25 -0700)
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>
net/ipv4/tcp.c

index ff6adecc54c66e04b0b1ead721bf006e90396234..313960e4cfdcc707c1d2e406ac59f1c4b98c9574 100644 (file)
@@ -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);