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>
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index da33c85..b969397 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1425,6 +1425,12 @@ static struct sctp_chunk *sctp_make_data(const struct sctp_association *asoc,
return _sctp_make_chunk(asoc, SCTP_CID_DATA, flags, paylen, gfp);
}
+struct sctp_chunk *sctp_make_idata(const struct sctp_association *asoc,
+ __u8 flags, int paylen, gfp_t gfp)
+{
+ return _sctp_make_chunk(asoc, SCTP_CID_I_DATA, flags, paylen, gfp);
+}
+
static struct sctp_chunk *sctp_make_control(const struct sctp_association *asoc,
__u8 type, __u8 flags, int paylen,
gfp_t gfp)