diff options
| author | Xin Long <lucien.xin@gmail.com> | 2017-02-09 01:18:17 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-09 16:57:38 -0500 |
| commit | c56480a1e90261842f54f3a5a9ebc12d827f0c3e (patch) | |
| tree | 6484401506f92c5502e3ca4895db3fa7cd9e256b | |
| parent | 119aecbae57e6f10b85b7cd5e070eef006dbcd74 (diff) | |
sctp: add support for generating stream reconf ssn/tsn reset request chunk
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/sctp.h | 5 | ||||
| -rw-r--r-- | include/net/sctp/sm.h | 2 | ||||
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 29 |
3 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/sctp.h b/include/linux/sctp.h index d74fca3f3141..71c0d41d9a59 100644 --- a/include/linux/sctp.h +++ b/include/linux/sctp.h @@ -737,4 +737,9 @@ struct sctp_strreset_inreq { __u16 list_of_streams[0]; }; +struct sctp_strreset_tsnreq { + sctp_paramhdr_t param_hdr; + __u32 request_seq; +}; + #endif /* __LINUX_SCTP_H__ */ diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h index 430ed139fbbb..ac37c1782e23 100644 --- a/include/net/sctp/sm.h +++ b/include/net/sctp/sm.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 *); diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index c7d3249f88ec..749842aead33 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -3658,3 +3658,32 @@ 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; +} |