1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 #ifndef _GCM_IMPL_H 27 #define _GCM_IMPL_H 28 29 /* 30 * GCM function dispatcher. 31 */ 32 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 37 #include <sys/zfs_context.h> 38 #include <sys/crypto/common.h> 39 40 /* 41 * Methods used to define GCM implementation 42 * 43 * @gcm_mul_f Perform carry-less multiplication 44 * @gcm_will_work_f Function tests whether implementation will function 45 */ 46 typedef void (*gcm_mul_f)(uint64_t *, uint64_t *, uint64_t *); 47 typedef boolean_t (*gcm_will_work_f)(void); 48 49 #define GCM_IMPL_NAME_MAX (16) 50 51 typedef struct gcm_impl_ops { 52 gcm_mul_f mul; 53 gcm_will_work_f is_supported; 54 char name[GCM_IMPL_NAME_MAX]; 55 } gcm_impl_ops_t; 56 57 extern const gcm_impl_ops_t gcm_generic_impl; 58 #if defined(__x86_64) && defined(HAVE_PCLMULQDQ) 59 extern const gcm_impl_ops_t gcm_pclmulqdq_impl; 60 #endif 61 62 /* 63 * Initializes fastest implementation 64 */ 65 void gcm_impl_init(void); 66 67 /* 68 * Returns optimal allowed GCM implementation 69 */ 70 const struct gcm_impl_ops *gcm_impl_get_ops(void); 71 72 #ifdef __cplusplus 73 } 74 #endif 75 76 #endif /* _GCM_IMPL_H */ 77