diff options
| -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 | ||||
| -rw-r--r-- | net/sctp/sm_make_chunk.c | 24 |
4 files changed, 45 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; diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c index 23a7313d7972..b9b269cf615e 100644 --- a/net/sctp/sm_make_chunk.c +++ b/net/sctp/sm_make_chunk.c @@ -3536,6 +3536,30 @@ struct sctp_chunk *sctp_make_fwdtsn(const struct sctp_association *asoc, return retval; } +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 *retval = NULL; + struct sctp_ifwdtsn_hdr ftsn_hdr; + size_t hint; + + hint = (nstreams + 1) * sizeof(__u32); + + retval = sctp_make_control(asoc, SCTP_CID_I_FWD_TSN, 0, hint, + GFP_ATOMIC); + if (!retval) + return NULL; + + ftsn_hdr.new_cum_tsn = htonl(new_cum_tsn); + retval->subh.ifwdtsn_hdr = + sctp_addto_chunk(retval, sizeof(ftsn_hdr), &ftsn_hdr); + + sctp_addto_chunk(retval, nstreams * sizeof(skiplist[0]), skiplist); + + return retval; +} + /* RE-CONFIG 3.1 (RE-CONFIG chunk) * 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 |