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authorXin Long <lucien.xin@gmail.com>2017-12-08 21:04:00 +0800
committerDavid S. Miller <davem@davemloft.net>2017-12-11 11:23:04 -0500
commitad05a7a05ede28ba6dd935d9e932264a22518b1f (patch)
tree9a60d1b471879cce652cd1eeae0f0735913aa039 /include/net/sctp
parent96b120b3c1397c90b64d1f4b2300fb7ce4aa8a68 (diff)
sctp: add basic structures and make chunk function for idata
sctp_idatahdr and sctp_idata_chunk are used to define and parse I-DATA chunk format, and sctp_make_idata is a function to build the chunk. The I-DATA Chunk Format is defined in section 2.1 of RFC8260. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp')
-rw-r--r--include/net/sctp/sm.h2
-rw-r--r--include/net/sctp/structs.h1
2 files changed, 3 insertions, 0 deletions
diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
index 70fb397f65b0..5389ae034cfa 100644
--- a/include/net/sctp/sm.h
+++ b/include/net/sctp/sm.h
@@ -197,6 +197,8 @@ struct sctp_chunk *sctp_make_cookie_ack(const struct sctp_association *asoc,
struct sctp_chunk *sctp_make_cwr(const struct sctp_association *asoc,
const __u32 lowest_tsn,
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_datafrag_empty(struct sctp_association *asoc,
const struct sctp_sndrcvinfo *sinfo,
int len, const __u8 flags,
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 7030cbe11f45..7026a8039367 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -575,6 +575,7 @@ struct sctp_chunk {
struct sctp_addiphdr *addip_hdr;
struct sctp_fwdtsn_hdr *fwdtsn_hdr;
struct sctp_authhdr *auth_hdr;
+ struct sctp_idatahdr *idata_hdr;
} subh;
__u8 *chunk_end;