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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>
This commit is contained in:
David S. Miller 2011-05-03 19:42:43 -07:00
parent 57a503c61d
commit 417da66fa9
1 changed files with 9 additions and 7 deletions
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16
net/ipv4/ipmr.c
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@ -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))) {