source: rtems-libbsd/freebsd/sys/sys/random.h @ c40e45b

5-freebsd-12
Last change on this file since c40e45b was c40e45b, checked in by Sebastian Huber <sebastian.huber@…>, on Oct 7, 2016 at 1:10:20 PM

Update to FreeBSD head 2016-08-23

Git mirror commit 9fe7c416e6abb28b1398fd3e5687099846800cfd.

  • Property mode set to 100644
File size: 3.7 KB
Line 
1/*-
2 * Copyright (c) 2000-2015 Mark R. V. Murray
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef _SYS_RANDOM_H_
30#define _SYS_RANDOM_H_
31
32#ifdef _KERNEL
33
34#include <sys/types.h>
35
36#if !defined(KLD_MODULE)
37#if defined(RANDOM_LOADABLE) && defined(RANDOM_YARROW)
38#error "Cannot define both RANDOM_LOADABLE and RANDOM_YARROW"
39#endif
40#endif
41
42struct uio;
43
44#if defined(DEV_RANDOM)
45u_int read_random(void *, u_int);
46int read_random_uio(struct uio *, bool);
47#else
48static __inline int
49read_random_uio(void *a __unused, u_int b __unused)
50{
51        return (0);
52}
53static __inline u_int
54read_random(void *a __unused, u_int b __unused)
55{
56        return (0);
57}
58#endif
59
60/*
61 * Note: if you add or remove members of random_entropy_source, remember to also update the
62 * KASSERT regarding what valid members are in random_harvest_internal(), and remember the
63 * strings in the static array random_source_descr[] in random_harvestq.c.
64 *
65 * NOTE: complain loudly to markm@ or on the lists if this enum gets more than 32
66 * distinct values (0-31)! ENTROPYSOURCE may be == 32, but not > 32.
67 */
68enum random_entropy_source {
69        RANDOM_START = 0,
70        RANDOM_CACHED = 0,
71        /* Environmental sources */
72        RANDOM_ATTACH,
73        RANDOM_KEYBOARD,
74        RANDOM_MOUSE,
75        RANDOM_NET_TUN,
76        RANDOM_NET_ETHER,
77        RANDOM_NET_NG,
78        RANDOM_INTERRUPT,
79        RANDOM_SWI,
80        RANDOM_FS_ATIME,
81        RANDOM_UMA,     /* Special!! UMA/SLAB Allocator */
82        RANDOM_ENVIRONMENTAL_END = RANDOM_UMA,
83        /* Fast hardware random-number sources from here on. */
84        RANDOM_PURE_OCTEON,
85        RANDOM_PURE_SAFE,
86        RANDOM_PURE_GLXSB,
87        RANDOM_PURE_UBSEC,
88        RANDOM_PURE_HIFN,
89        RANDOM_PURE_RDRAND,
90        RANDOM_PURE_NEHEMIAH,
91        RANDOM_PURE_RNDTEST,
92        RANDOM_PURE_VIRTIO,
93        RANDOM_PURE_BROADCOM,
94        ENTROPYSOURCE
95};
96
97#define RANDOM_HARVEST_EVERYTHING_MASK ((1 << (RANDOM_ENVIRONMENTAL_END + 1)) - 1)
98
99#if defined(DEV_RANDOM)
100void random_harvest_queue(const void *, u_int, u_int, enum random_entropy_source);
101void random_harvest_fast(const void *, u_int, u_int, enum random_entropy_source);
102void random_harvest_direct(const void *, u_int, u_int, enum random_entropy_source);
103#else
104#define random_harvest_queue(a, b, c, d) do {} while (0)
105#define random_harvest_fast(a, b, c, d) do {} while (0)
106#define random_harvest_direct(a, b, c, d) do {} while (0)
107#endif
108
109#if defined(RANDOM_ENABLE_UMA)
110#define random_harvest_fast_uma(a, b, c, d)     random_harvest_fast(a, b, c, d)
111#else /* !defined(RANDOM_ENABLE_UMA) */
112#define random_harvest_fast_uma(a, b, c, d)     do {} while (0)
113#endif /* defined(RANDOM_ENABLE_UMA) */
114
115#endif /* _KERNEL */
116
117#endif /* _SYS_RANDOM_H_ */
Note: See TracBrowser for help on using the repository browser.