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vti6: Add a lookup method for tunnels with wildcard endpoints.

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Currently we can't lookup tunnels with wildcard endpoints.
This patch adds a method to lookup these tunnels in the
receive path.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Steffen Klassert 2014-11-20 10:01:49 +01:00
parent 12bfa8bdba
commit fbe68ee875
1 changed files with 17 additions and 0 deletions
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17
net/ipv6/ip6_vti.c
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@ -95,6 +95,7 @@ vti6_tnl_lookup(struct net *net, const struct in6_addr *remote,
unsigned int hash = HASH(remote, local);
struct ip6_tnl *t;
struct vti6_net *ip6n = net_generic(net, vti6_net_id);
struct in6_addr any;
for_each_vti6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
if (ipv6_addr_equal(local, &t->parms.laddr) &&
@ -102,6 +103,22 @@ vti6_tnl_lookup(struct net *net, const struct in6_addr *remote,
(t->dev->flags & IFF_UP))
return t;
}
memset(&any, 0, sizeof(any));
hash = HASH(&any, local);
for_each_vti6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
if (ipv6_addr_equal(local, &t->parms.laddr) &&
(t->dev->flags & IFF_UP))
return t;
}
hash = HASH(remote, &any);
for_each_vti6_tunnel_rcu(ip6n->tnls_r_l[hash]) {
if (ipv6_addr_equal(remote, &t->parms.raddr) &&
(t->dev->flags & IFF_UP))
return t;
}
t = rcu_dereference(ip6n->tnls_wc[0]);
if (t && (t->dev->flags & IFF_UP))
return t;