+
+static int nfattr_to_tcp(struct nfattr *cda[], struct ip_conntrack *ct)
+{
+ struct nfattr *attr = cda[CTA_PROTOINFO_TCP-1];
+ struct nfattr *tb[CTA_PROTOINFO_TCP_MAX];
+
+ /* updates could not contain anything about the private
+ * protocol info, in that case skip the parsing */
+ if (!attr)
+ return 0;
+
+ nfattr_parse_nested(tb, CTA_PROTOINFO_TCP_MAX, attr);
+
+ if (!tb[CTA_PROTOINFO_TCP_STATE-1])
+ return -EINVAL;
+
+ write_lock_bh(&tcp_lock);
+ ct->proto.tcp.state =
+ *(u_int8_t *)NFA_DATA(tb[CTA_PROTOINFO_TCP_STATE-1]);
+ write_unlock_bh(&tcp_lock);
+
+ return 0;
+}