+static const struct nla_policy sctp_nla_policy[CTA_PROTOINFO_SCTP_MAX+1] = {
+ [CTA_PROTOINFO_SCTP_STATE] = { .type = NLA_U8 },
+ [CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] = { .type = NLA_U32 },
+ [CTA_PROTOINFO_SCTP_VTAG_REPLY] = { .type = NLA_U32 },
+};
+
+static int nlattr_to_sctp(struct nlattr *cda[], struct nf_conn *ct)
+{
+ struct nlattr *attr = cda[CTA_PROTOINFO_SCTP];
+ struct nlattr *tb[CTA_PROTOINFO_SCTP_MAX+1];
+ int err;
+
+ /* updates may not contain the internal protocol info, skip parsing */
+ if (!attr)
+ return 0;
+
+ err = nla_parse_nested(tb,
+ CTA_PROTOINFO_SCTP_MAX,
+ attr,
+ sctp_nla_policy);
+ if (err < 0)
+ return err;
+
+ if (!tb[CTA_PROTOINFO_SCTP_STATE] ||
+ !tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL] ||
+ !tb[CTA_PROTOINFO_SCTP_VTAG_REPLY])
+ return -EINVAL;
+
+ spin_lock_bh(&ct->lock);
+ ct->proto.sctp.state = nla_get_u8(tb[CTA_PROTOINFO_SCTP_STATE]);
+ ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL] =
+ nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_ORIGINAL]);
+ ct->proto.sctp.vtag[IP_CT_DIR_REPLY] =
+ nla_get_be32(tb[CTA_PROTOINFO_SCTP_VTAG_REPLY]);
+ spin_unlock_bh(&ct->lock);
+
+ return 0;
+}
+
+static int sctp_nlattr_size(void)
+{
+ return nla_total_size(0) /* CTA_PROTOINFO_SCTP */
+ + nla_policy_len(sctp_nla_policy, CTA_PROTOINFO_SCTP_MAX + 1);
+}
+#endif
+