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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 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 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_RANDOM_H 28 #define _SYS_RANDOM_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/types.h> 33 #include <sys/atomic.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 /* stats for the random number devices, /dev/random and /dev/urandom. */ 40 typedef struct rnd_stats { 41 uint64_t rs_rndOut; /* Bytes generated for /dev/random */ 42 uint64_t rs_rndcOut; /* Bytes read from /dev/random cache */ 43 uint64_t rs_urndOut; /* Bytes generated for /dev/urandom */ 44 } rnd_stats_t; 45 46 /* stats for the kernel random number provider, swrand. */ 47 typedef struct swrand_stats { 48 uint32_t ss_entEst; /* Entropy estimate in bits */ 49 uint64_t ss_entIn; /* Entropy bits added to pool */ 50 uint64_t ss_entOut; /* Entropy bits extracted from pool */ 51 uint64_t ss_bytesIn; /* Total data bytes added to pool */ 52 uint64_t ss_bytesOut; /* Total data bytes extracted from */ 53 /* the pool */ 54 } swrand_stats_t; 55 56 #ifdef _KERNEL 57 58 #define BUMP_CPU_RND_STATS(rm, x, v) (((rm)->rm_stats).x += (v)) 59 #define BUMP_RND_STATS(x, v) atomic_add_64(&(rnd_stats).x, (v)) 60 #define BUMP_SWRAND_STATS(x, v) atomic_add_64(&(swrand_stats).x, (v)) 61 62 extern int random_add_entropy(uint8_t *, size_t, uint16_t); 63 extern int random_get_bytes(uint8_t *, size_t); 64 extern int random_get_pseudo_bytes(uint8_t *, size_t); 65 66 #endif /* _KERNEL */ 67 68 #ifdef __cplusplus 69 } 70 #endif 71 72 #endif /* _SYS_RANDOM_H */ 73