This patch implement the protocol definitions for STREAM-RESET
extension.
Signed-off-by: Wei Yongjun <yjwei@xxxxxxxxxxxxxx>
---
include/linux/sctp.h | 101 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 101 insertions(+), 0 deletions(-)
diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index c2731bf..5a12eb0 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -111,6 +111,9 @@ typedef enum {
/* Use hex, as defined in ADDIP sec. 3.1 */
SCTP_CID_ASCONF = 0xC1,
SCTP_CID_ASCONF_ACK = 0x80,
+
+ /* STREAM-RESET Extension Section 3.1 */
+ SCTP_CID_STREAM_RESET = 0x82,
} sctp_cid_t; /* enum */
@@ -202,6 +205,12 @@ typedef enum {
SCTP_PARAM_SUCCESS_REPORT = cpu_to_be16(0xc005),
SCTP_PARAM_ADAPTATION_LAYER_IND = cpu_to_be16(0xc006),
+ /* STREAM-RESET Extension Section 3.2 */
+ SCTP_PARAM_RESET_OUT_REQUEST = cpu_to_be16(0x000d),
+ SCTP_PARAM_RESET_IN_REQUEST = cpu_to_be16(0x000e),
+ SCTP_PARAM_RESET_TSN_REQUEST = cpu_to_be16(0x000f),
+ SCTP_PARAM_RESET_RESPONSE = cpu_to_be16(0x0010),
+ SCTP_PARAM_ADD_STREAM = cpu_to_be16(0x0011),
} sctp_param_t; /* enum */
@@ -707,4 +716,96 @@ typedef struct sctp_auth_chunk {
sctp_authhdr_t auth_hdr;
} __attribute__((packed)) sctp_auth_chunk_t;
+/* STREAM-RESET Extension Section 3.1 STREAM RESET Chunk
+ *
+ * The chunk has the following format:
+ * 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
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Type = 0x82 | Chunk Flags | Chunk Length |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Stream Reset Parameter |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Stream Reset Parameter (optional) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+typedef struct sctp_strrst_chunk {
+ sctp_chunkhdr_t chunk_hdr;
+ __u8 params[0];
+} __attribute__((packed)) sctp_strrst_chunk_t;
+
+/* STREAM-RESET Extension Section 3.2.1 Outgoing SSN Reset Request Parameter
+ *
+ * This parameter is used by the sender to request some outgoing streams
+ * to be reset.
+ */
+typedef struct sctp_reset_out_req {
+ sctp_paramhdr_t param_hdr;
+ __be32 request_seq;
+ __be32 response_seq;
+ __be32 send_reset_at_tsn;
+ __be16 stream[0];
+} __attribute__((packed)) sctp_reset_out_req_t;
+
+/* STREAM-RESET Extension Section 3.2.2 Incoming SSN Reset Request Parameter
+ *
+ * This parameter is used by the sender to request that the peer
+ * requests some of its outgoing streams to be reset.
+ */
+typedef struct sctp_reset_in_req {
+ sctp_paramhdr_t param_hdr;
+ __be32 request_seq;
+ __be16 stream[0];
+} __attribute__((packed)) sctp_reset_in_req_t;
+
+/* STREAM-RESET Extension Section 3.2.3 SSN/TSN Reset Request Parameter
+ *
+ * This parameter is used by the sender to request to reset the TSN and
+ * SSN numbering of all streams.
+ */
+typedef struct sctp_reset_tsn_req {
+ sctp_paramhdr_t param_hdr;
+ __be32 request_seq;
+} __attribute__((packed)) sctp_reset_tsn_req_t;
+
+/* STREAM-RESET Extension Section 3.2.4 Stream Reset Response Parameter
+ *
+ * This parameter is used by the receiver of a stream reset request
+ * parameter to respond to the stream reset request.
+ */
+typedef struct sctp_reset_res {
+ sctp_paramhdr_t param_hdr;
+ __be32 response_seq;
+ __be32 result;
+} __attribute__((packed)) sctp_reset_res_t;
+
+typedef struct sctp_reset_tsn_res {
+ sctp_paramhdr_t param_hdr;
+ __be32 response_seq;
+ __be32 result;
+ __be32 senders_next_tsn;
+ __be32 receivers_next_tsn;
+} __attribute__((packed)) sctp_reset_tsn_res_t;
+
+/* STREAM-RESET Extension Section 3.2.5 Add Streams
+ *
+ * This parameter is used by the sender to request that the peer add the
+ * requested number of streams to the association.
+ */
+typedef struct sctp_add_stream {
+ sctp_paramhdr_t param_hdr;
+ __be32 request_seq;
+ __be16 num_streams;
+ __be16 reserved;
+} __attribute__((packed)) sctp_add_stream_t;
+
+typedef enum {
+ SCTP_STREAM_RESET_NOTHING = cpu_to_be32(0x00),
+ SCTP_STREAM_RESET_PERFORMED = cpu_to_be32(0x01),
+ SCTP_STREAM_RESET_DENIED = cpu_to_be32(0x02),
+ SCTP_STREAM_RESET_WRONG_SSN = cpu_to_be32(0x03),
+ SCTP_STREAM_RESET_TRY_LATER = cpu_to_be32(0x04),
+ SCTP_STREAM_RESET_BAD_SEQNO = cpu_to_be32(0x05),
+} sctp_stream_reset_result_t;
+
#endif /* __LINUX_SCTP_H__ */
--
1.5.3.8
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