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authorDavid Ahern <dsahern@gmail.com>2018-04-17 17:33:21 -0700
committerDavid S. Miller <davem@davemloft.net>2018-04-17 23:41:17 -0400
commitf8a1b43b709d8ef33a8de2f8f35095b4a4413713 (patch)
tree33d38a0628d1bf2925fe1b35620e9232236ab1a9 /net/ipv6/ndisc.c
parent3b6761d18bc11f2af2a6fc494e9026d39593f22c (diff)
downloadop-kernel-dev-f8a1b43b709d8ef33a8de2f8f35095b4a4413713.zip
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net/ipv6: Create a neigh_lookup for FIB entries
The router discovery code has a FIB entry and wants to validate the gateway has a neighbor entry. Refactor the existing dst_neigh_lookup for IPv6 and create a new function that takes the gateway and device and returns a neighbor entry. Use the new function in ndisc_router_discovery to validate the gateway. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ndisc.c')
-rw-r--r--net/ipv6/ndisc.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index e4d9eea..5567171 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1276,7 +1276,9 @@ static void ndisc_router_discovery(struct sk_buff *skb)
rt = rt6_get_dflt_router(net, &ipv6_hdr(skb)->saddr, skb->dev);
if (rt) {
- neigh = dst_neigh_lookup(&rt->dst, &ipv6_hdr(skb)->saddr);
+ neigh = ip6_neigh_lookup(&rt->fib6_nh.nh_gw,
+ rt->fib6_nh.nh_dev, NULL,
+ &ipv6_hdr(skb)->saddr);
if (!neigh) {
ND_PRINTK(0, err,
"RA: %s got default router without neighbour\n",
@@ -1304,7 +1306,9 @@ static void ndisc_router_discovery(struct sk_buff *skb)
return;
}
- neigh = dst_neigh_lookup(&rt->dst, &ipv6_hdr(skb)->saddr);
+ neigh = ip6_neigh_lookup(&rt->fib6_nh.nh_gw,
+ rt->fib6_nh.nh_dev, NULL,
+ &ipv6_hdr(skb)->saddr);
if (!neigh) {
ND_PRINTK(0, err,
"RA: %s got default router without neighbour\n",
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