1 /* SCTP kernel implementation 2 * (C) Copyright Red Hat Inc. 2017 3 * 4 * These are definitions used by the stream schedulers, defined in RFC 5 * draft ndata (https://tools.ietf.org/html/draft-ietf-tsvwg-sctp-ndata-11) 6 * 7 * This SCTP implementation is free software; 8 * you can redistribute it and/or modify it under the terms of 9 * the GNU General Public License as published by 10 * the Free Software Foundation; either version 2, or (at your option) 11 * any later version. 12 * 13 * This SCTP implementation is distributed in the hope that it 14 * will be useful, but WITHOUT ANY WARRANTY; without even the implied 15 * ************************ 16 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 17 * See the GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with GNU CC; see the file COPYING. If not, see 21 * <http://www.gnu.org/licenses/>. 22 * 23 * Please send any bug reports or fixes you make to the 24 * email addresses: 25 * lksctp developers <linux-sctp@vger.kernel.org> 26 * 27 * Written or modified by: 28 * Xin Long <lucien.xin@gmail.com> 29 */ 30 31 #ifndef __sctp_stream_interleave_h__ 32 #define __sctp_stream_interleave_h__ 33 34 struct sctp_stream_interleave { 35 __u16 data_chunk_len; 36 __u16 ftsn_chunk_len; 37 /* (I-)DATA process */ 38 struct sctp_chunk *(*make_datafrag)(const struct sctp_association *asoc, 39 const struct sctp_sndrcvinfo *sinfo, 40 int len, __u8 flags, gfp_t gfp); 41 void (*assign_number)(struct sctp_chunk *chunk); 42 bool (*validate_data)(struct sctp_chunk *chunk); 43 int (*ulpevent_data)(struct sctp_ulpq *ulpq, 44 struct sctp_chunk *chunk, gfp_t gfp); 45 int (*enqueue_event)(struct sctp_ulpq *ulpq, 46 struct sctp_ulpevent *event); 47 void (*renege_events)(struct sctp_ulpq *ulpq, 48 struct sctp_chunk *chunk, gfp_t gfp); 49 void (*start_pd)(struct sctp_ulpq *ulpq, gfp_t gfp); 50 void (*abort_pd)(struct sctp_ulpq *ulpq, gfp_t gfp); 51 /* (I-)FORWARD-TSN process */ 52 void (*generate_ftsn)(struct sctp_outq *q, __u32 ctsn); 53 bool (*validate_ftsn)(struct sctp_chunk *chunk); 54 void (*report_ftsn)(struct sctp_ulpq *ulpq, __u32 ftsn); 55 void (*handle_ftsn)(struct sctp_ulpq *ulpq, 56 struct sctp_chunk *chunk); 57 }; 58 59 void sctp_stream_interleave_init(struct sctp_stream *stream); 60 61 #endif /* __sctp_stream_interleave_h__ */ 62