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ipv6: sr: enforce IPv6 packets for seg6local lwt 

This patch ensures that the seg6local lightweight tunnel is used solely
with IPv6 routes and processes only IPv6 packets.

Signed-off-by: David Lebrun <david.lebrun@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Lebrun 2017-08-25 09:56:46 +02:00 committed by David S. Miller
parent 38ee7f2d47
commit 6285217f0c
1 changed files with 8 additions and 0 deletions
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8
net/ipv6/seg6_local.c
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@ -357,6 +357,11 @@ static int seg6_local_input(struct sk_buff *skb)
struct seg6_action_desc *desc; struct seg6_action_desc *desc;
struct seg6_local_lwt *slwt; struct seg6_local_lwt *slwt;
if (skb->protocol != htons(ETH_P_IPV6)) {
kfree_skb(skb);
return -EINVAL;
}
slwt = seg6_local_lwtunnel(orig_dst->lwtstate); slwt = seg6_local_lwtunnel(orig_dst->lwtstate);
desc = slwt->desc; desc = slwt->desc;
@ -623,6 +628,9 @@ static int seg6_local_build_state(struct nlattr *nla, unsigned int family,
struct seg6_local_lwt *slwt; struct seg6_local_lwt *slwt;
int err; int err;
if (family != AF_INET6)
return -EINVAL;
err = nla_parse_nested(tb, SEG6_LOCAL_MAX, nla, seg6_local_policy, err = nla_parse_nested(tb, SEG6_LOCAL_MAX, nla, seg6_local_policy,
extack); extack);