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authorDavid S. Miller <davem@davemloft.net>2011-05-07 03:24:06 +0400
committerDavid S. Miller <davem@davemloft.net>2011-05-09 01:05:14 +0400
commitb57ae01a8a8446dbbed7365c9b05aef1fc6dea20 (patch)
tree14e18d9c67111e2fe44bad96b062794f3c14c98d
parent6e869138101bc607e4780187210b79d531f9b2ce (diff)
downloadlinux-b57ae01a8a8446dbbed7365c9b05aef1fc6dea20.tar.xz
ipv4: Use cork flow in ip_queue_xmit()
All invokers of ip_queue_xmit() must make certain that the socket is locked. All of SCTP, TCP, DCCP, and L2TP now make sure this is the case. Therefore we can use the cork flow during output route lookup in ip_queue_xmit() when the socket route check fails. Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/ip_output.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 0a2f49a442e8..4ba26d4040ed 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -317,6 +317,7 @@ int ip_queue_xmit(struct sk_buff *skb)
struct sock *sk = skb->sk;
struct inet_sock *inet = inet_sk(sk);
struct ip_options_rcu *inet_opt;
+ struct flowi4 *fl4;
struct rtable *rt;
struct iphdr *iph;
int res;
@@ -331,9 +332,9 @@ int ip_queue_xmit(struct sk_buff *skb)
goto packet_routed;
/* Make sure we can route this packet. */
+ fl4 = &inet->cork.fl.u.ip4;
rt = (struct rtable *)__sk_dst_check(sk, 0);
if (rt == NULL) {
- struct flowi4 fl4;
__be32 daddr;
/* Use correct destination address if we have options. */
@@ -345,7 +346,7 @@ int ip_queue_xmit(struct sk_buff *skb)
* keep trying until route appears or the connection times
* itself out.
*/
- rt = ip_route_output_ports(sock_net(sk), &fl4, sk,
+ rt = ip_route_output_ports(sock_net(sk), fl4, sk,
daddr, inet->inet_saddr,
inet->inet_dport,
inet->inet_sport,