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authorXin Long <lucien.xin@gmail.com>2017-12-15 00:41:25 +0800
committerDavid S. Miller <davem@davemloft.net>2017-12-15 13:52:21 -0500
commit2d07a49aded490a0a4a2748e64030a0f59b6b8be (patch)
tree002bb4a971000aeeadcc77611c04136314d20496 /include/linux/sctp.h
parent024778095aa340960fdfd7f7db293290454fbce2 (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/linux/sctp.h')
-rw-r--r--include/linux/sctp.h17
1 files changed, 17 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)