+}
+EXPORT_SYMBOL_GPL(nf_ct_delete_from_lists);
+
+static void death_by_event(unsigned long ul_conntrack)
+{
+ struct nf_conn *ct = (void *)ul_conntrack;
+ struct net *net = nf_ct_net(ct);
+
+ if (nf_conntrack_event(IPCT_DESTROY, ct) < 0) {
+ /* bad luck, let's retry again */
+ ct->timeout.expires = jiffies +
+ (random32() % net->ct.sysctl_events_retry_timeout);
+ add_timer(&ct->timeout);
+ return;
+ }
+ /* we've got the event delivered, now it's dying */
+ set_bit(IPS_DYING_BIT, &ct->status);
+ spin_lock(&nf_conntrack_lock);
+ hlist_nulls_del(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode);
+ spin_unlock(&nf_conntrack_lock);
+ nf_ct_put(ct);
+}
+
+void nf_ct_insert_dying_list(struct nf_conn *ct)
+{
+ struct net *net = nf_ct_net(ct);
+
+ /* add this conntrack to the dying list */
+ spin_lock_bh(&nf_conntrack_lock);
+ hlist_nulls_add_head(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode,
+ &net->ct.dying);
+ spin_unlock_bh(&nf_conntrack_lock);
+ /* set a new timer to retry event delivery */
+ setup_timer(&ct->timeout, death_by_event, (unsigned long)ct);
+ ct->timeout.expires = jiffies +
+ (random32() % net->ct.sysctl_events_retry_timeout);
+ add_timer(&ct->timeout);
+}
+EXPORT_SYMBOL_GPL(nf_ct_insert_dying_list);
+
+static void death_by_timeout(unsigned long ul_conntrack)
+{
+ struct nf_conn *ct = (void *)ul_conntrack;
+
+ if (!test_bit(IPS_DYING_BIT, &ct->status) &&
+ unlikely(nf_conntrack_event(IPCT_DESTROY, ct) < 0)) {
+ /* destroy event was not delivered */
+ nf_ct_delete_from_lists(ct);
+ nf_ct_insert_dying_list(ct);
+ return;
+ }
+ set_bit(IPS_DYING_BIT, &ct->status);
+ nf_ct_delete_from_lists(ct);