cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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stream_sched.h (2316B)

      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 *   Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
     14 */
     15
     16#ifndef __sctp_stream_sched_h__
     17#define __sctp_stream_sched_h__
     18
     19struct sctp_sched_ops {
     20	/* Property handling for a given stream */
     21	int (*set)(struct sctp_stream *stream, __u16 sid, __u16 value,
     22		   gfp_t gfp);
     23	int (*get)(struct sctp_stream *stream, __u16 sid, __u16 *value);
     24
     25	/* Init the specific scheduler */
     26	int (*init)(struct sctp_stream *stream);
     27	/* Init a stream */
     28	int (*init_sid)(struct sctp_stream *stream, __u16 sid, gfp_t gfp);
     29	/* Frees the entire thing */
     30	void (*free)(struct sctp_stream *stream);
     31
     32	/* Enqueue a chunk */
     33	void (*enqueue)(struct sctp_outq *q, struct sctp_datamsg *msg);
     34	/* Dequeue a chunk */
     35	struct sctp_chunk *(*dequeue)(struct sctp_outq *q);
     36	/* Called only if the chunk fit the packet */
     37	void (*dequeue_done)(struct sctp_outq *q, struct sctp_chunk *chunk);
     38	/* Sched all chunks already enqueued */
     39	void (*sched_all)(struct sctp_stream *steam);
     40	/* Unched all chunks already enqueued */
     41	void (*unsched_all)(struct sctp_stream *steam);
     42};
     43
     44int sctp_sched_set_sched(struct sctp_association *asoc,
     45			 enum sctp_sched_type sched);
     46int sctp_sched_get_sched(struct sctp_association *asoc);
     47int sctp_sched_set_value(struct sctp_association *asoc, __u16 sid,
     48			 __u16 value, gfp_t gfp);
     49int sctp_sched_get_value(struct sctp_association *asoc, __u16 sid,
     50			 __u16 *value);
     51void sctp_sched_dequeue_done(struct sctp_outq *q, struct sctp_chunk *ch);
     52
     53void sctp_sched_dequeue_common(struct sctp_outq *q, struct sctp_chunk *ch);
     54int sctp_sched_init_sid(struct sctp_stream *stream, __u16 sid, gfp_t gfp);
     55struct sctp_sched_ops *sctp_sched_ops_from_stream(struct sctp_stream *stream);
     56
     57void sctp_sched_ops_register(enum sctp_sched_type sched,
     58			     struct sctp_sched_ops *sched_ops);
     59void sctp_sched_ops_prio_init(void);
     60void sctp_sched_ops_rr_init(void);
     61
     62#endif /* __sctp_stream_sched_h__ */