sip_hash.h revision 2c2c41837e330b002c4220a39638150db504fe0e
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SIP_HASH_H
#define _SIP_HASH_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <pthread.h>
/* A prime number */
#define SIP_HASH_SZ 6037
#define SIP_DIGEST_TO_HASH(digest) \
((digest[0] + digest[1] + digest[2] + digest[3] + digest[4] + \
digest[5] + digest[6] + digest[7]) % SIP_HASH_SZ)
/* An entry in the hash table, sip_obj is opaque */
typedef struct sip_hash_obj_s {
void *sip_obj;
struct sip_hash_obj_s *next_obj;
struct sip_hash_obj_s *prev_obj;
} sip_hash_obj_t;
/* A hash list in the table */
typedef struct sip_hash_s {
sip_hash_obj_t *hash_head;
sip_hash_obj_t *hash_tail;
int hash_count;
pthread_mutex_t sip_hash_mutex;
}sip_hash_t;
int sip_hash_add(sip_hash_t *, void *, int);
void *sip_hash_find(sip_hash_t *, void *, int,
boolean_t (*)(void *, void *));
void sip_walk_hash(sip_hash_t *, void (*)(void *, void *), void *);
void sip_hash_delete(sip_hash_t *, void *, int,
boolean_t (*)(void *, void *, int *));
void sip_hash_init();
#ifdef __cplusplus
}
#endif
#endif /* _SIP_HASH_H */