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 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #ifndef _GCM_IMPL_H 26 #define _GCM_IMPL_H 27 28 /* 29 * GCM function dispatcher. 30 */ 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #include <sys/zfs_context.h> 37 #include <sys/crypto/common.h> 38 39 /* 40 * Methods used to define GCM implementation 41 * 42 * @gcm_mul_f Perform carry-less multiplication 43 * @gcm_will_work_f Function tests whether implementation will function 44 */ 45 typedef void (*gcm_mul_f)(uint64_t *, uint64_t *, uint64_t *); 46 typedef boolean_t (*gcm_will_work_f)(void); 47 48 #define GCM_IMPL_NAME_MAX (16) 49 50 typedef struct gcm_impl_ops { 51 gcm_mul_f mul; 52 gcm_will_work_f is_supported; 53 char name[GCM_IMPL_NAME_MAX]; 54 } gcm_impl_ops_t; 55 56 extern const gcm_impl_ops_t gcm_generic_impl; 57 #if defined(__x86_64) && defined(HAVE_PCLMULQDQ) 58 extern const gcm_impl_ops_t gcm_pclmulqdq_impl; 59 #endif 60 61 /* 62 * Initializes fastest implementation 63 */ 64 void gcm_impl_init(void); 65 66 /* 67 * Returns optimal allowed GCM implementation 68 */ 69 const struct gcm_impl_ops *gcm_impl_get_ops(void); 70 71 #ifdef __cplusplus 72 } 73 #endif 74 75 #endif /* _GCM_IMPL_H */ 76