78 lines
2.9 KiB
C
78 lines
2.9 KiB
C
/* 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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* This SCTP implementation is free software;
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* you can redistribute it and/or modify it under the terms of
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* the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This SCTP implementation is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* ************************
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU CC; see the file COPYING. If not, see
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* <http://www.gnu.org/licenses/>.
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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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* Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
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*/
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#ifndef __sctp_stream_sched_h__
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#define __sctp_stream_sched_h__
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struct sctp_sched_ops {
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/* Property handling for a given stream */
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int (*set)(struct sctp_stream *stream, __u16 sid, __u16 value,
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gfp_t gfp);
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int (*get)(struct sctp_stream *stream, __u16 sid, __u16 *value);
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/* Init the specific scheduler */
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int (*init)(struct sctp_stream *stream);
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/* Init a stream */
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int (*init_sid)(struct sctp_stream *stream, __u16 sid, gfp_t gfp);
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/* Frees the entire thing */
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void (*free)(struct sctp_stream *stream);
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/* Enqueue a chunk */
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void (*enqueue)(struct sctp_outq *q, struct sctp_datamsg *msg);
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/* Dequeue a chunk */
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struct sctp_chunk *(*dequeue)(struct sctp_outq *q);
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/* Called only if the chunk fit the packet */
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void (*dequeue_done)(struct sctp_outq *q, struct sctp_chunk *chunk);
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/* Sched all chunks already enqueued */
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void (*sched_all)(struct sctp_stream *steam);
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/* Unched all chunks already enqueued */
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void (*unsched_all)(struct sctp_stream *steam);
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};
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int sctp_sched_set_sched(struct sctp_association *asoc,
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enum sctp_sched_type sched);
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int sctp_sched_get_sched(struct sctp_association *asoc);
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int sctp_sched_set_value(struct sctp_association *asoc, __u16 sid,
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__u16 value, gfp_t gfp);
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int sctp_sched_get_value(struct sctp_association *asoc, __u16 sid,
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__u16 *value);
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void sctp_sched_dequeue_done(struct sctp_outq *q, struct sctp_chunk *ch);
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void sctp_sched_dequeue_common(struct sctp_outq *q, struct sctp_chunk *ch);
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int sctp_sched_init_sid(struct sctp_stream *stream, __u16 sid, gfp_t gfp);
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struct sctp_sched_ops *sctp_sched_ops_from_stream(struct sctp_stream *stream);
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void sctp_sched_ops_register(enum sctp_sched_type sched,
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struct sctp_sched_ops *sched_ops);
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void sctp_sched_ops_prio_init(void);
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void sctp_sched_ops_rr_init(void);
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#endif /* __sctp_stream_sched_h__ */
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