/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2001-2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _RSMLIB_IN_H
#define _RSMLIB_IN_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
#define LOOPBACK "loopback"
#define DEVRSM "/dev/rsm"
#define RSMSEGIDFILE "/etc/rsm/rsm.segmentid"
#define RSMSEG_RESERVED "reserved"
#define RSM_IMPORT_SEG 1
#define RSM_EXPORT_SEG 2
#define RSM_MAX_HANDLE_DVMA 0x2000
/* This is the default barrier implementation structure */
typedef struct {
rsmseg_handle_t *rsmgenbar_seg;
uint16_t rsmgenbar_gen;
rsm_barrier_t *rsmgenbar_data;
}rsmgenbar_handle_t;
#define RSM_MAX_BUCKETS 128 /* # buckets in the hash table */
#define RSM_POLLFD_PER_CHUNK 16 /* # pollfd in each chunk */
/* least significant 3 bytes of the fd should be unique enough */
#define RSM_POLLFD_HASH(fd) (((fd) ^ ((fd) >> 8) ^ ((fd) >> 16)) % \
RSM_MAX_BUCKETS)
/*
* pollfd_table maintains a mapping from fd to resource number. It also
* provides a mechanism to check if a given fd corresponds to an rsmapi
* segment. Entries get added to this table as a result of
* rsm_memseg_get_pollfd and removed as a result of rsm_memseg_release_pollfd.
*/
typedef struct {
int fd;
minor_t segrnum;
}rsm_pollfd_element_t;
typedef struct rsm_pollfd_chunk {
struct rsm_pollfd_chunk *next;
int nfree;
rsm_pollfd_element_t fdarray[RSM_POLLFD_PER_CHUNK];
} rsm_pollfd_chunk_t;
typedef struct {
mutex_t lock;
rsm_pollfd_chunk_t *buckets[RSM_MAX_BUCKETS];
} rsm_pollfd_table_t;
/*
* The following macros are defined only if the DEBUG flag is enabled
* The macro makes use of category and level values defined in rsm.h
* and the dbg_printf function defined in rsmlib.c (defined as an
* extern below)
*/
#ifdef DEBUG
#define TRACELOG "/tmp/librsm.log"
#define DBPRINTF(msg) dbg_printf msg
#else
#define TRACELOG
#define DBPRINTF(msg)
#endif
extern void dbg_printf(int category, int level, char *fmt, ...);
typedef int (*rsm_attach_entry_t)(int, rsm_segops_t **);
#ifdef __cplusplus
}
#endif
#endif /* _RSMLIB_IN_H */