LXR linux/include/net/sctp/stream

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/* SCTP kernel implementation
   3 * (C) Copyright Red Hat Inc. 2017
   4 *
   5 * These are definitions used by the stream schedulers, defined in RFC
   6 * draft ndata (https://tools.ietf.org/html/draft-ietf-tsvwg-sctp-ndata-11)
   7 *
   8 * Please send any bug reports or fixes you make to the
   9 * email addresses:
  10 *    lksctp developers <linux-sctp@vger.kernel.org>
  11 *
  12 * Written or modified by:
  13 *   Xin Long <lucien.xin@gmail.com>
  14 */
  15
  16#ifndef __sctp_stream_interleave_h__
  17#define __sctp_stream_interleave_h__
  18
  19struct sctp_stream_interleave {
  20        __u16   data_chunk_len;
  21        __u16   ftsn_chunk_len;
  22        /* (I-)DATA process */
  23        struct sctp_chunk *(*make_datafrag)(const struct sctp_association *asoc,
  24                                            const struct sctp_sndrcvinfo *sinfo,
  25                                            int len, __u8 flags, gfp_t gfp);
  26        void    (*assign_number)(struct sctp_chunk *chunk);
  27        bool    (*validate_data)(struct sctp_chunk *chunk);
  28        int     (*ulpevent_data)(struct sctp_ulpq *ulpq,
  29                                 struct sctp_chunk *chunk, gfp_t gfp);
  30        int     (*enqueue_event)(struct sctp_ulpq *ulpq,
  31                                 struct sctp_ulpevent *event);
  32        void    (*renege_events)(struct sctp_ulpq *ulpq,
  33                                 struct sctp_chunk *chunk, gfp_t gfp);
  34        void    (*start_pd)(struct sctp_ulpq *ulpq, gfp_t gfp);
  35        void    (*abort_pd)(struct sctp_ulpq *ulpq, gfp_t gfp);
  36        /* (I-)FORWARD-TSN process */
  37        void    (*generate_ftsn)(struct sctp_outq *q, __u32 ctsn);
  38        bool    (*validate_ftsn)(struct sctp_chunk *chunk);
  39        void    (*report_ftsn)(struct sctp_ulpq *ulpq, __u32 ftsn);
  40        void    (*handle_ftsn)(struct sctp_ulpq *ulpq,
  41                               struct sctp_chunk *chunk);
  42};
  43
  44void sctp_stream_interleave_init(struct sctp_stream *stream);
  45
  46#endif /* __sctp_stream_interleave_h__ */
  47