1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _ISNS_CACHE_H 28 #define _ISNS_CACHE_H 29 30 #include <synch.h> 31 #include <isns_htab.h> 32 #include <isns_dd.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #define CACHE_FLAG_UPDATED 0x1 39 40 #define SET_CACHE_UPDATED() (cache_flag |= CACHE_FLAG_UPDATED) 41 #define RESET_CACHE_UPDATED() (cache_flag &= ~CACHE_FLAG_UPDATED) 42 43 #define IS_CACHE_UPDATED() (cache_flag & CACHE_FLAG_UPDATED) 44 45 #define CACHE_NO_ACTION (0) 46 #define CACHE_READ (1) 47 #define CACHE_TRY_READ (2) 48 #define CACHE_WRITE (3) 49 50 typedef struct cache { 51 rwlock_t l; 52 htab_t **t; 53 matrix_t **x; 54 uint32_t (*get_hval)(void *, uint16_t, uint32_t *); 55 uint32_t (*get_uid)(const void *); 56 uint32_t (*set_uid)(void *, uint32_t); 57 uint32_t (*timestamp)(void); 58 int (*add_hook)(void *); 59 int (*replace_hook)(void *, void *, uint32_t *, int); 60 int (*cmp)(void *, void *, int); 61 void *(*clone)(void *, int); 62 int (*ddd)(void *, const uchar_t); 63 #ifdef DEBUG 64 void (*dump)(void *); 65 #endif 66 } cache_t; 67 68 int cache_init(void); 69 void cache_destroy(void); 70 int cache_lock(int); 71 int cache_unlock(int, int); 72 int cache_lock_read(void); 73 int cache_lock_write(void); 74 int cache_unlock_sync(int); 75 int cache_unlock_nosync(void); 76 htab_t *cache_get_htab(isns_type_t); 77 matrix_t *cache_get_matrix(isns_type_t); 78 int cache_lookup(lookup_ctrl_t *, uint32_t *, int (*)(void *, void *)); 79 int cache_rekey(lookup_ctrl_t *, uint32_t *, int (*)(void *, void *)); 80 int cache_add(isns_obj_t *, int, uint32_t *, int *); 81 isns_obj_t *cache_remove(lookup_ctrl_t *, int); 82 83 #ifdef DEBUG 84 void cache_dump_htab(isns_type_t); 85 #endif 86 87 #ifdef __cplusplus 88 } 89 #endif 90 91 #endif /* _ISNS_CACHE_H */ 92