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tcp: Do not check flush when comparing options for GRO 

There is no need to repeatedly check flush when comparing TCP
options for GRO as it will be false 99% of the time where it
matters.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2009-05-26 18:50:34 +00:00 committed by David S. Miller
parent 9aaa156cf9
commit a2a804cddf
1 changed files with 1 additions and 1 deletions
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2
net/ipv4/tcp.c
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@ -2570,7 +2570,7 @@ found:
flush |= (flags ^ tcp_flag_word(th2)) & flush |= (flags ^ tcp_flag_word(th2)) &
~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH); ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH);
flush |= th->ack_seq ^ th2->ack_seq; flush |= th->ack_seq ^ th2->ack_seq;
for (i = sizeof(*th); !flush && i < thlen; i += 4) for (i = sizeof(*th); i < thlen; i += 4)
flush |= *(u32 *)((u8 *)th + i) ^ flush |= *(u32 *)((u8 *)th + i) ^
*(u32 *)((u8 *)th2 + i); *(u32 *)((u8 *)th2 + i);