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 2008 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 #include <sys/types.h> 30 #include <sys/atomic.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* stats for the random number devices, /dev/random and /dev/urandom. */ 37 typedef struct rnd_stats { 38 uint64_t rs_rndOut; /* Bytes generated for /dev/random */ 39 uint64_t rs_rndcOut; /* Bytes read from /dev/random cache */ 40 uint64_t rs_urndOut; /* Bytes generated for /dev/urandom */ 41 } rnd_stats_t; 42 43 /* stats for the kernel random number provider, swrand. */ 44 typedef struct swrand_stats { 45 uint32_t ss_entEst; /* Entropy estimate in bits */ 46 uint64_t ss_entIn; /* Entropy bits added to pool */ 47 uint64_t ss_entOut; /* Entropy bits extracted from pool */ 48 uint64_t ss_bytesIn; /* Total data bytes added to pool */ 49 uint64_t ss_bytesOut; /* Total data bytes extracted from */ 50 /* the pool */ 51 } swrand_stats_t; 52 53 #ifdef _KERNEL 54 55 #define BUMP_CPU_RND_STATS(rm, x, v) (((rm)->rm_mag.rm_stats).x += (v)) 56 #define BUMP_RND_STATS(x, v) atomic_add_64(&(rnd_stats).x, (v)) 57 #define BUMP_SWRAND_STATS(x, v) atomic_add_64(&(swrand_stats).x, (v)) 58 59 extern int random_add_entropy(uint8_t *, size_t, uint_t); 60 extern int random_get_bytes(uint8_t *, size_t); 61 extern int random_get_pseudo_bytes(uint8_t *, size_t); 62 63 #endif /* _KERNEL */ 64 65 #ifdef __cplusplus 66 } 67 #endif 68 69 #endif /* _SYS_RANDOM_H */ 70