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