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openvswitch: __nf_ct_l{3,4}proto_find() always return a valid pointer 

If the protocol is not natively supported, this assigns generic protocol
tracker so we can always assume a valid pointer after these calls.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: Joe Stringer <joe@ovn.org>
This commit is contained in:
Pablo Neira Ayuso 2016-05-03 11:13:29 +02:00
parent 71d8c47fc6
commit 3b78155b1b
1 changed files with 0 additions and 8 deletions
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8
net/openvswitch/conntrack.c
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@ -439,20 +439,12 @@ ovs_ct_find_existing(struct net *net, const struct nf_conntrack_zone *zone,
u8 protonum;
l3proto = __nf_ct_l3proto_find(l3num);
if (!l3proto) {
pr_debug("ovs_ct_find_existing: Can't get l3proto\n");
return NULL;
}
if (l3proto->get_l4proto(skb, skb_network_offset(skb), &dataoff,
&protonum) <= 0) {
pr_debug("ovs_ct_find_existing: Can't get protonum\n");
return NULL;
}
l4proto = __nf_ct_l4proto_find(l3num, protonum);
if (!l4proto) {
pr_debug("ovs_ct_find_existing: Can't get l4proto\n");
return NULL;
}
if (!nf_ct_get_tuple(skb, skb_network_offset(skb), dataoff, l3num,
protonum, net, &tuple, l3proto, l4proto)) {
pr_debug("ovs_ct_find_existing: Can't get tuple\n");