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 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_RANDOM_H 27 #define _SYS_RANDOM_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/types.h> 32 #include <sys/atomic.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* stats for the random number devices, /dev/random and /dev/urandom. */ 39 typedef struct rnd_stats { 40 uint64_t rs_rndOut; /* Bytes generated for /dev/random */ 41 uint64_t rs_rndcOut; /* Bytes read from /dev/random cache */ 42 uint64_t rs_urndOut; /* Bytes generated for /dev/urandom */ 43 } rnd_stats_t; 44 45 /* stats for the kernel random number provider, swrand. */ 46 typedef struct swrand_stats { 47 uint32_t ss_entEst; /* Entropy estimate in bits */ 48 uint64_t ss_entIn; /* Entropy bits added to pool */ 49 uint64_t ss_entOut; /* Entropy bits extracted from pool */ 50 uint64_t ss_bytesIn; /* Total data bytes added to pool */ 51 uint64_t ss_bytesOut; /* Total data bytes extracted from */ 52 /* the pool */ 53 } swrand_stats_t; 54 55 #ifdef _KERNEL 56 57 #define BUMP_CPU_RND_STATS(rm, x, v) (((rm)->rm_stats).x += (v)) 58 #define BUMP_RND_STATS(x, v) atomic_add_64(&(rnd_stats).x, (v)) 59 #define BUMP_SWRAND_STATS(x, v) atomic_add_64(&(swrand_stats).x, (v)) 60 61 extern int random_add_entropy(uint8_t *, size_t, uint_t); 62 extern int random_get_bytes(uint8_t *, size_t); 63 extern int random_get_pseudo_bytes(uint8_t *, size_t); 64 65 #endif /* _KERNEL */ 66 67 #ifdef __cplusplus 68 } 69 #endif 70 71 #endif /* _SYS_RANDOM_H */ 72