From 417da66fa9d2f14b1a90b04095413b87907d8183 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 3 May 2011 19:42:43 -0700
Subject: [PATCH] ipv4: Rework ipmr_rt_fib_lookup() flow key initialization.
Use information from the skb as much as possible, currently
this means daddr, saddr, and TOS.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ipv4/ipmr.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index c81b9b661d26..3ad38a449588 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1788,12 +1788,14 @@ static int ip_mr_forward(struct net *net, struct mr_table *mrt,
return 0;
}
-static struct mr_table *ipmr_rt_fib_lookup(struct net *net, struct rtable *rt)
+static struct mr_table *ipmr_rt_fib_lookup(struct net *net, struct sk_buff *skb)
{
+ struct rtable *rt = skb_rtable(skb);
+ struct iphdr *iph = ip_hdr(skb);
struct flowi4 fl4 = {
- .daddr = rt->rt_key_dst,
- .saddr = rt->rt_key_src,
- .flowi4_tos = rt->rt_tos,
+ .daddr = iph->daddr,
+ .saddr = iph->saddr,
+ .flowi4_tos = iph->tos,
.flowi4_oif = rt->rt_oif,
.flowi4_iif = rt->rt_iif,
.flowi4_mark = rt->rt_mark,
@@ -1825,7 +1827,7 @@ int ip_mr_input(struct sk_buff *skb)
if (IPCB(skb)->flags & IPSKB_FORWARDED)
goto dont_forward;
- mrt = ipmr_rt_fib_lookup(net, skb_rtable(skb));
+ mrt = ipmr_rt_fib_lookup(net, skb);
if (IS_ERR(mrt)) {
kfree_skb(skb);
return PTR_ERR(mrt);
@@ -1957,7 +1959,7 @@ int pim_rcv_v1(struct sk_buff *skb)
pim = igmp_hdr(skb);
- mrt = ipmr_rt_fib_lookup(net, skb_rtable(skb));
+ mrt = ipmr_rt_fib_lookup(net, skb);
if (IS_ERR(mrt))
goto drop;
if (!mrt->mroute_do_pim ||
@@ -1989,7 +1991,7 @@ static int pim_rcv(struct sk_buff *skb)
csum_fold(skb_checksum(skb, 0, skb->len, 0))))
goto drop;
- mrt = ipmr_rt_fib_lookup(net, skb_rtable(skb));
+ mrt = ipmr_rt_fib_lookup(net, skb);
if (IS_ERR(mrt))
goto drop;
if (__pim_rcv(mrt, skb, sizeof(*pim))) {
--
GitLab