net: ip_append_data() optim

Compiler is not smart enough to avoid a conditional branch.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 6d2753c..e427620 100644 (file)
--- 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)