* [PATCH net-next-2.6] net: ip_append_data() optim
@ 2010-08-24 21:34 Eric Dumazet
2010-08-24 21:45 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Eric Dumazet @ 2010-08-24 21:34 UTC (permalink / raw)
To: David Miller; +Cc: netdev
Compiler is not smart enough to avoid a conditional branch.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
---
net/ipv4/ip_output.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 6d2753c..e427620 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -837,10 +837,9 @@ int ip_append_data(struct sock *sk,
inet->cork.length = 0;
sk->sk_sndmsg_page = NULL;
sk->sk_sndmsg_off = 0;
- if ((exthdrlen = rt->dst.header_len) != 0) {
- length += exthdrlen;
- transhdrlen += exthdrlen;
- }
+ exthdrlen = rt->dst.header_len;
+ length += exthdrlen;
+ transhdrlen += exthdrlen;
} else {
rt = (struct rtable *)inet->cork.dst;
if (inet->cork.flags & IPCORK_OPT)
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2010-08-24 21:34 [PATCH net-next-2.6] net: ip_append_data() optim Eric Dumazet
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