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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* SCTP kernel implementation
* (C) Copyright Red Hat Inc. 2017
*
* These are definitions used by the stream schedulers, defined in RFC
* draft ndata (https://tools.ietf.org/html/draft-ietf-tsvwg-sctp-ndata-11)
*
* Please send any bug reports or fixes you make to the
* email addresses:
* lksctp developers <linux-sctp@vger.kernel.org>
*
* Written or modified by:
* Xin Long <lucien.xin@gmail.com>
*/
#ifndef __sctp_stream_interleave_h__
#define __sctp_stream_interleave_h__
struct sctp_stream_interleave {
__u16 data_chunk_len;
__u16 ftsn_chunk_len;
/* (I-)DATA process */
struct sctp_chunk *(*make_datafrag)(const struct sctp_association *asoc,
const struct sctp_sndrcvinfo *sinfo,
int len, __u8 flags, gfp_t gfp);
void (*assign_number)(struct sctp_chunk *chunk);
bool (*validate_data)(struct sctp_chunk *chunk);
int (*ulpevent_data)(struct sctp_ulpq *ulpq,
struct sctp_chunk *chunk, gfp_t gfp);
int (*enqueue_event)(struct sctp_ulpq *ulpq,
struct sctp_ulpevent *event);
void (*renege_events)(struct sctp_ulpq *ulpq,
struct sctp_chunk *chunk, gfp_t gfp);
void (*start_pd)(struct sctp_ulpq *ulpq, gfp_t gfp);
void (*abort_pd)(struct sctp_ulpq *ulpq, gfp_t gfp);
/* (I-)FORWARD-TSN process */
void (*generate_ftsn)(struct sctp_outq *q, __u32 ctsn);
bool (*validate_ftsn)(struct sctp_chunk *chunk);
void (*report_ftsn)(struct sctp_ulpq *ulpq, __u32 ftsn);
void (*handle_ftsn)(struct sctp_ulpq *ulpq,
struct sctp_chunk *chunk);
};
void sctp_stream_interleave_init(struct sctp_stream *stream);
#endif /* __sctp_stream_interleave_h__ */