1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2001-2002 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _RSMLIB_IN_H 28*0Sstevel@tonic-gate #define _RSMLIB_IN_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #ifdef __cplusplus 33*0Sstevel@tonic-gate extern "C" { 34*0Sstevel@tonic-gate #endif 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #include <sys/types.h> 37*0Sstevel@tonic-gate #include <sys/mman.h> 38*0Sstevel@tonic-gate #include <sys/stat.h> 39*0Sstevel@tonic-gate #include <fcntl.h> 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate #define LOOPBACK "loopback" 42*0Sstevel@tonic-gate #define DEVRSM "/dev/rsm" 43*0Sstevel@tonic-gate #define RSMSEGIDFILE "/etc/rsm/rsm.segmentid" 44*0Sstevel@tonic-gate #define RSMSEG_RESERVED "reserved" 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate #define RSM_IMPORT_SEG 1 47*0Sstevel@tonic-gate #define RSM_EXPORT_SEG 2 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate #define RSM_MAX_HANDLE_DVMA 0x2000 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate /* This is the default barrier implementation structure */ 52*0Sstevel@tonic-gate typedef struct { 53*0Sstevel@tonic-gate rsmseg_handle_t *rsmgenbar_seg; 54*0Sstevel@tonic-gate uint16_t rsmgenbar_gen; 55*0Sstevel@tonic-gate rsm_barrier_t *rsmgenbar_data; 56*0Sstevel@tonic-gate }rsmgenbar_handle_t; 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate #define RSM_MAX_BUCKETS 128 /* # buckets in the hash table */ 59*0Sstevel@tonic-gate #define RSM_POLLFD_PER_CHUNK 16 /* # pollfd in each chunk */ 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate /* least significant 3 bytes of the fd should be unique enough */ 62*0Sstevel@tonic-gate #define RSM_POLLFD_HASH(fd) (((fd) ^ ((fd) >> 8) ^ ((fd) >> 16)) % \ 63*0Sstevel@tonic-gate RSM_MAX_BUCKETS) 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /* 66*0Sstevel@tonic-gate * pollfd_table maintains a mapping from fd to resource number. It also 67*0Sstevel@tonic-gate * provides a mechanism to check if a given fd corresponds to an rsmapi 68*0Sstevel@tonic-gate * segment. Entries get added to this table as a result of 69*0Sstevel@tonic-gate * rsm_memseg_get_pollfd and removed as a result of rsm_memseg_release_pollfd. 70*0Sstevel@tonic-gate */ 71*0Sstevel@tonic-gate typedef struct { 72*0Sstevel@tonic-gate int fd; 73*0Sstevel@tonic-gate minor_t segrnum; 74*0Sstevel@tonic-gate }rsm_pollfd_element_t; 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate typedef struct rsm_pollfd_chunk { 77*0Sstevel@tonic-gate struct rsm_pollfd_chunk *next; 78*0Sstevel@tonic-gate int nfree; 79*0Sstevel@tonic-gate rsm_pollfd_element_t fdarray[RSM_POLLFD_PER_CHUNK]; 80*0Sstevel@tonic-gate } rsm_pollfd_chunk_t; 81*0Sstevel@tonic-gate 82*0Sstevel@tonic-gate typedef struct { 83*0Sstevel@tonic-gate mutex_t lock; 84*0Sstevel@tonic-gate rsm_pollfd_chunk_t *buckets[RSM_MAX_BUCKETS]; 85*0Sstevel@tonic-gate } rsm_pollfd_table_t; 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate /* 88*0Sstevel@tonic-gate * The following macros are defined only if the DEBUG flag is enabled 89*0Sstevel@tonic-gate * The macro makes use of category and level values defined in rsm.h 90*0Sstevel@tonic-gate * and the dbg_printf function defined in rsmlib.c (defined as an 91*0Sstevel@tonic-gate * extern below) 92*0Sstevel@tonic-gate */ 93*0Sstevel@tonic-gate #ifdef DEBUG 94*0Sstevel@tonic-gate #define TRACELOG "/tmp/librsm.log" 95*0Sstevel@tonic-gate #define DBPRINTF(msg) dbg_printf msg 96*0Sstevel@tonic-gate #else 97*0Sstevel@tonic-gate #define TRACELOG 98*0Sstevel@tonic-gate #define DBPRINTF(msg) 99*0Sstevel@tonic-gate #endif 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate extern void dbg_printf(int category, int level, char *fmt, ...); 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate typedef int (*rsm_attach_entry_t)(int, rsm_segops_t **); 104*0Sstevel@tonic-gate 105*0Sstevel@tonic-gate #ifdef __cplusplus 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate #endif 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate #endif /* _RSMLIB_IN_H */ 110