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/*
* 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 (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _GCM_IMPL_H
#define _GCM_IMPL_H
/*
* GCM function dispatcher.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/zfs_context.h>
#include <sys/crypto/common.h>
/*
* Methods used to define GCM implementation
*
* @gcm_mul_f Perform carry-less multiplication
* @gcm_will_work_f Function tests whether implementation will function
*/
typedef void (*gcm_mul_f)(uint64_t *, uint64_t *, uint64_t *);
typedef boolean_t (*gcm_will_work_f)(void);
#define GCM_IMPL_NAME_MAX (16)
typedef struct gcm_impl_ops {
gcm_mul_f mul;
gcm_will_work_f is_supported;
char name[GCM_IMPL_NAME_MAX];
} gcm_impl_ops_t;
extern const gcm_impl_ops_t gcm_generic_impl;
#if defined(__x86_64) && defined(HAVE_PCLMULQDQ)
extern const gcm_impl_ops_t gcm_pclmulqdq_impl;
#endif
/*
* Initializes fastest implementation
*/
void gcm_impl_init(void);
/*
* Returns optimal allowed GCM implementation
*/
const struct gcm_impl_ops *gcm_impl_get_ops(void);
#ifdef __cplusplus
}
#endif
#endif /* _GCM_IMPL_H */
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