@@ -737,4 +737,9 @@ struct sctp_strreset_inreq {
__u16 list_of_streams[0];
} __packed;
+struct sctp_strreset_tsnreq {
+ sctp_paramhdr_t param_hdr;
+ __u32 request_seq;
+} __packed;
+
#endif /* __LINUX_SCTP_H__ */
@@ -265,6 +265,8 @@ struct sctp_chunk *sctp_make_strreset_req(
const struct sctp_association *asoc,
__u16 stream_num, __u16 *stream_list,
bool out, bool in);
+struct sctp_chunk *sctp_make_strreset_tsnreq(
+ const struct sctp_association *asoc);
void sctp_chunk_assign_tsn(struct sctp_chunk *);
void sctp_chunk_assign_ssn(struct sctp_chunk *);
@@ -3660,3 +3660,32 @@ struct sctp_chunk *sctp_make_strreset_req(
return retval;
}
+
+/* RE-CONFIG 4.3 (SSN/TSN RESET ALL)
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Parameter Type = 15 | Parameter Length = 8 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Re-configuration Request Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+struct sctp_chunk *sctp_make_strreset_tsnreq(
+ const struct sctp_association *asoc)
+{
+ struct sctp_strreset_tsnreq tsnreq;
+ __u16 length = sizeof(tsnreq);
+ struct sctp_chunk *retval;
+
+ retval = sctp_make_reconf(asoc, length);
+ if (!retval)
+ return NULL;
+
+ tsnreq.param_hdr.type = SCTP_PARAM_RESET_TSN_REQUEST;
+ tsnreq.param_hdr.length = htons(length);
+ tsnreq.request_seq = htonl(asoc->strreset_outseq);
+
+ sctp_addto_chunk(retval, sizeof(tsnreq), &tsnreq);
+
+ return retval;
+}
This patch is to define SSN/TSN Reset Request Parameter described in rfc6525 section 4.3. Signed-off-by: Xin Long <lucien.xin@gmail.com> --- include/linux/sctp.h | 5 +++++ include/net/sctp/sm.h | 2 ++ net/sctp/sm_make_chunk.c | 29 +++++++++++++++++++++++++++++ 3 files changed, 36 insertions(+)