Wei Yongjun wrote:
> 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;
> +
It a bit more logical to put these next to sctp_reset_res as these
indicate possible result values.
-vlad
> #endif /* __LINUX_SCTP_H__ */
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