| Marcelo Ricardo Leitner | 5bbbbe3 | 2017-10-03 19:20:13 -0300 | [diff] [blame] | 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 | * Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> |
| 29 | */ |
| 30 | |
| 31 | #ifndef __sctp_stream_sched_h__ |
| 32 | #define __sctp_stream_sched_h__ |
| 33 | |
| 34 | struct sctp_sched_ops { |
| 35 | /* Property handling for a given stream */ |
| 36 | int (*set)(struct sctp_stream *stream, __u16 sid, __u16 value, |
| 37 | gfp_t gfp); |
| 38 | int (*get)(struct sctp_stream *stream, __u16 sid, __u16 *value); |
| 39 | |
| 40 | /* Init the specific scheduler */ |
| 41 | int (*init)(struct sctp_stream *stream); |
| 42 | /* Init a stream */ |
| 43 | int (*init_sid)(struct sctp_stream *stream, __u16 sid, gfp_t gfp); |
| 44 | /* Frees the entire thing */ |
| 45 | void (*free)(struct sctp_stream *stream); |
| 46 | |
| 47 | /* Enqueue a chunk */ |
| 48 | void (*enqueue)(struct sctp_outq *q, struct sctp_datamsg *msg); |
| 49 | /* Dequeue a chunk */ |
| 50 | struct sctp_chunk *(*dequeue)(struct sctp_outq *q); |
| 51 | /* Called only if the chunk fit the packet */ |
| 52 | void (*dequeue_done)(struct sctp_outq *q, struct sctp_chunk *chunk); |
| 53 | /* Sched all chunks already enqueued */ |
| 54 | void (*sched_all)(struct sctp_stream *steam); |
| 55 | /* Unched all chunks already enqueued */ |
| 56 | void (*unsched_all)(struct sctp_stream *steam); |
| 57 | }; |
| 58 | |
| 59 | int sctp_sched_set_sched(struct sctp_association *asoc, |
| 60 | enum sctp_sched_type sched); |
| 61 | int sctp_sched_get_sched(struct sctp_association *asoc); |
| 62 | int sctp_sched_set_value(struct sctp_association *asoc, __u16 sid, |
| 63 | __u16 value, gfp_t gfp); |
| 64 | int sctp_sched_get_value(struct sctp_association *asoc, __u16 sid, |
| 65 | __u16 *value); |
| 66 | void sctp_sched_dequeue_done(struct sctp_outq *q, struct sctp_chunk *ch); |
| 67 | |
| 68 | void sctp_sched_dequeue_common(struct sctp_outq *q, struct sctp_chunk *ch); |
| 69 | int sctp_sched_init_sid(struct sctp_stream *stream, __u16 sid, gfp_t gfp); |
| 70 | struct sctp_sched_ops *sctp_sched_ops_from_stream(struct sctp_stream *stream); |
| 71 | |
| 72 | #endif /* __sctp_stream_sched_h__ */ |