netfilter: nfnetlink_queue: allow to attach expectations to conntracks

[~andy/linux] / net / netfilter / nfnetlink_queue_ct.c

diff --git a/net/netfilter/nfnetlink_queue_ct.c b/net/netfilter/nfnetlink_queue_ct.c
index ab61d66bc0b9e53fb5c0b657d0d954f8ea16cf3b..be893039966d5b4be828b8b0418e86cb0282c383 100644 (file)
--- a/net/netfilter/nfnetlink_queue_ct.c
+++ b/net/netfilter/nfnetlink_queue_ct.c
@@ -96,3 +96,18 @@ void nfqnl_ct_seq_adjust(struct sk_buff *skb, struct nf_conn *ct,
        if ((ct->status & IPS_NAT_MASK) && diff)
                nfq_nat_ct->seq_adjust(skb, ct, ctinfo, diff);
 }
+
+int nfqnl_attach_expect(struct nf_conn *ct, const struct nlattr *attr,
+                       u32 portid, u32 report)
+{
+       struct nfq_ct_hook *nfq_ct;
+
+       if (nf_ct_is_untracked(ct))
+               return 0;
+
+       nfq_ct = rcu_dereference(nfq_ct_hook);
+       if (nfq_ct == NULL)
+               return -EOPNOTSUPP;
+
+       return nfq_ct->attach_expect(attr, ct, portid, report);
+}