From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue, 24 Aug 2010 21:45:09 +0000 (-0700)
Subject: net: ip_append_data() optim
X-Git-Tag: v5.15~27691^2~697
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=ec550d246e38e1b4ea8604b5c71ccb72e38f3290;p=mirror_ubuntu-kernels.git

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 6d2753c7ffdd..e42762023c27 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)