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authorDavid S. Miller <davem@davemloft.net>2012-07-13 05:03:45 -0700
committerDavid S. Miller <davem@davemloft.net>2012-07-20 13:31:20 -0700
commitf8126f1d5136be1ca1a3536d43ad7a710b5620f8 (patch)
tree8a92815052257c4ca29461f5b9ddaaeac288a7ed /net/ipv4/arp.c
parentf1ce3062c53809d862d8a04e7a0566c3cc4e0bda (diff)
downloadop-kernel-dev-f8126f1d5136be1ca1a3536d43ad7a710b5620f8.zip
op-kernel-dev-f8126f1d5136be1ca1a3536d43ad7a710b5620f8.tar.gz
ipv4: Adjust semantics of rt->rt_gateway.
In order to allow prefixed routes, we have to adjust how rt_gateway is set and interpreted. The new interpretation is: 1) rt_gateway == 0, destination is on-link, nexthop is iph->daddr 2) rt_gateway != 0, destination requires a nexthop gateway Abstract the fetching of the proper nexthop value using a new inline helper, rt_nexthop(), as suggested by Joe Perches. Signed-off-by: David S. Miller <davem@davemloft.net> Tested-by: Vijay Subramanian <subramanian.vijay@gmail.com>
Diffstat (limited to 'net/ipv4/arp.c')
-rw-r--r--net/ipv4/arp.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index c38293f..a0124eb 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -475,8 +475,7 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb)
return 1;
}
- paddr = skb_rtable(skb)->rt_gateway;
-
+ paddr = rt_nexthop(skb_rtable(skb), ip_hdr(skb)->daddr);
if (arp_set_predefined(inet_addr_type(dev_net(dev), paddr), haddr,
paddr, dev))
return 0;
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