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authorDavid S. Miller <davem@davemloft.net>2011-03-02 23:31:35 +0100
committerDavid S. Miller <davem@davemloft.net>2011-03-02 23:31:35 +0100
commitb23dd4fe42b455af5c6e20966b7d6959fa8352ea (patch)
treebf97323eae9a8d084170e573ff2c0c40bc72c3cd /net/ipv4/icmp.c
parentxfrm: Return dst directly from xfrm_lookup() (diff)
downloadlinux-b23dd4fe42b455af5c6e20966b7d6959fa8352ea.tar.xz
linux-b23dd4fe42b455af5c6e20966b7d6959fa8352ea.zip
ipv4: Make output route lookup return rtable directly.
Instead of on the stack. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/icmp.c')
-rw-r--r--net/ipv4/icmp.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index c23bd8cdeee0..994a785d98f9 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -358,7 +358,8 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
.fl4_tos = RT_TOS(ip_hdr(skb)->tos),
.proto = IPPROTO_ICMP };
security_skb_classify_flow(skb, &fl);
- if (ip_route_output_key(net, &rt, &fl))
+ rt = ip_route_output_key(net, &fl);
+ if (IS_ERR(rt))
goto out_unlock;
}
if (icmpv4_xrlim_allow(net, rt, icmp_param->data.icmph.type,
@@ -388,9 +389,9 @@ static struct rtable *icmp_route_lookup(struct net *net, struct sk_buff *skb_in,
int err;
security_skb_classify_flow(skb_in, &fl);
- err = __ip_route_output_key(net, &rt, &fl);
- if (err)
- return ERR_PTR(err);
+ rt = __ip_route_output_key(net, &fl);
+ if (IS_ERR(rt))
+ return rt;
/* No need to clone since we're just using its address. */
rt2 = rt;
@@ -412,15 +413,19 @@ static struct rtable *icmp_route_lookup(struct net *net, struct sk_buff *skb_in,
goto relookup_failed;
if (inet_addr_type(net, fl.fl4_src) == RTN_LOCAL) {
- err = __ip_route_output_key(net, &rt2, &fl);
+ rt2 = __ip_route_output_key(net, &fl);
+ if (IS_ERR(rt2))
+ err = PTR_ERR(rt2);
} else {
struct flowi fl2 = {};
unsigned long orefdst;
fl2.fl4_dst = fl.fl4_src;
- err = ip_route_output_key(net, &rt2, &fl2);
- if (err)
+ rt2 = ip_route_output_key(net, &fl2);
+ if (IS_ERR(rt2)) {
+ err = PTR_ERR(rt2);
goto relookup_failed;
+ }
/* Ugh! */
orefdst = skb_in->_skb_refdst; /* save old refdst */
err = ip_route_input(skb_in, fl.fl4_dst, fl.fl4_src,