diff options
| author | Xin Long <lucien.xin@gmail.com> | 2017-12-15 00:41:25 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-15 13:52:21 -0500 |
| commit | 2d07a49aded490a0a4a2748e64030a0f59b6b8be (patch) | |
| tree | 002bb4a971000aeeadcc77611c04136314d20496 /include | |
| parent | 024778095aa340960fdfd7f7db293290454fbce2 (diff) | |
sctp: add basic structures and make chunk function for ifwdtsn
sctp_ifwdtsn_skip, sctp_ifwdtsn_hdr and sctp_ifwdtsn_chunk are used to
define and parse I-FWD TSN chunk format, and sctp_make_ifwdtsn is a
function to build the chunk.
The I-FORWARD-TSN Chunk Format is defined in section 2.3.1 of RFC8260.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo R. Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sctp.h | 17 | ||||
| -rw-r--r-- | include/net/sctp/sm.h | 3 | ||||
| -rw-r--r-- | include/net/sctp/structs.h | 1 |
3 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/sctp.h b/include/linux/sctp.h index 38e2cf66195f..b36c76635f18 100644 --- a/include/linux/sctp.h +++ b/include/linux/sctp.h @@ -110,6 +110,7 @@ enum sctp_cid { /* Use hex, as defined in ADDIP sec. 3.1 */ SCTP_CID_ASCONF = 0xC1, + SCTP_CID_I_FWD_TSN = 0xC2, SCTP_CID_ASCONF_ACK = 0x80, SCTP_CID_RECONF = 0x82, }; /* enum */ @@ -616,6 +617,22 @@ struct sctp_fwdtsn_chunk { struct sctp_fwdtsn_hdr fwdtsn_hdr; }; +struct sctp_ifwdtsn_skip { + __be16 stream; + __u8 reserved; + __u8 flags; + __be32 mid; +}; + +struct sctp_ifwdtsn_hdr { + __be32 new_cum_tsn; + struct sctp_ifwdtsn_skip skip[0]; +}; + +struct sctp_ifwdtsn_chunk { + struct sctp_chunkhdr chunk_hdr; + struct sctp_ifwdtsn_hdr fwdtsn_hdr; +}; /* ADDIP * Section 3.1.1 Address Configuration Change Chunk (ASCONF) diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h index 0993b4953b3a..2883c43c5258 100644 --- a/include/net/sctp/sm.h +++ b/include/net/sctp/sm.h @@ -199,6 +199,9 @@ struct sctp_chunk *sctp_make_cwr(const struct sctp_association *asoc, const struct sctp_chunk *chunk); struct sctp_chunk *sctp_make_idata(const struct sctp_association *asoc, __u8 flags, int paylen, gfp_t gfp); +struct sctp_chunk *sctp_make_ifwdtsn(const struct sctp_association *asoc, + __u32 new_cum_tsn, size_t nstreams, + struct sctp_ifwdtsn_skip *skiplist); struct sctp_chunk *sctp_make_datafrag_empty(const struct sctp_association *asoc, const struct sctp_sndrcvinfo *sinfo, int len, __u8 flags, gfp_t gfp); diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 8ef638d966f1..a5c3cf41e693 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -599,6 +599,7 @@ struct sctp_chunk { struct sctp_fwdtsn_hdr *fwdtsn_hdr; struct sctp_authhdr *auth_hdr; struct sctp_idatahdr *idata_hdr; + struct sctp_ifwdtsn_hdr *ifwdtsn_hdr; } subh; __u8 *chunk_end; |