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ipv4: Make rt->fl.iif tests lest obscure.

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When we test rt->fl.iif against zero, we're seeing if it's
an output or an input route.

Make that explicit with some helper functions.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2010-11-11 17:07:48 -08:00
parent ed1deb7021
commit c753796769
9 changed files with 42 additions and 20 deletions
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2
net/ipv4/igmp.c
View file

@ -961,7 +961,7 @@ int igmp_rcv(struct sk_buff *skb)
case IGMP_HOST_MEMBERSHIP_REPORT:
case IGMPV2_HOST_MEMBERSHIP_REPORT:
/* Is it our report looped back? */
if (skb_rtable(skb)->fl.iif == 0)
if (rt_is_output_route(skb_rtable(skb)))
break;
/* don't rely on MC router hearing unicast reports */
if (skb->pkt_type == PACKET_MULTICAST ||