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| 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 /net/sctp/sm_make_chunk.c | |
| parent | sctp: streams should be recovered when it fails to send request. (diff) | |
| download | linux-dev-c56480a1e90261842f54f3a5a9ebc12d827f0c3e.tar.xz linux-dev-c56480a1e90261842f54f3a5a9ebc12d827f0c3e.zip | |
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>
Diffstat (limited to 'net/sctp/sm_make_chunk.c')
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 29 |
1 files changed, 29 insertions, 0 deletions
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; +} |