1 /*-
2 * Copyright (c) 2009-2010 Brad Penoff
3 * Copyright (c) 2009-2010 Humaira Kamal
4 * Copyright (c) 2011-2012 Irene Ruengeler
5 * Copyright (c) 2011-2012 Michael Tuexen
6 *
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #ifndef _USER_ENVIRONMENT_H_
32 #define _USER_ENVIRONMENT_H_
33 /* __Userspace__ */
34 #include <sys/types.h>
35
36 #ifdef __FreeBSD__
37 #ifndef _SYS_MUTEX_H_
38 #include <sys/mutex.h>
39 #endif
40 #endif
41 #if defined(_WIN32)
42 #include "netinet/sctp_os_userspace.h"
43 #endif
44
45 /* maxsockets is used in SCTP_ZONE_INIT call. It refers to
46 * kern.ipc.maxsockets kernel environment variable.
47 */
48 extern int maxsockets;
49
50 /* int hz; is declared in sys/kern/subr_param.c and refers to kernel timer frequency.
51 * See http://ivoras.sharanet.org/freebsd/vmware.html for additional info about kern.hz
52 * hz is initialized in void init_param1(void) in that file.
53 */
54 extern int hz;
55
56
57 /* The following two ints define a range of available ephemeral ports. */
58 extern int ipport_firstauto, ipport_lastauto;
59
60 /* nmbclusters is used in sctp_usrreq.c (e.g., sctp_init). In the FreeBSD kernel,
61 * this is 1024 + maxusers * 64.
62 */
63 extern int nmbclusters;
64
65 #if !defined(_MSC_VER) && !defined(__MINGW32__)
66 #define min(a,b) (((a)>(b))?(b):(a))
67 #define max(a,b) (((a)>(b))?(a):(b))
68 #endif
69
70 void init_random(void);
71 int read_random(void *, int);
72
73 /* errno's may differ per OS. errno.h now included in sctp_os_userspace.h */
74 /* Source: /usr/src/sys/sys/errno.h */
75 /* #define ENOSPC 28 */ /* No space left on device */
76 /* #define ENOBUFS 55 */ /* No buffer space available */
77 /* #define ENOMEM 12 */ /* Cannot allocate memory */
78 /* #define EACCES 13 */ /* Permission denied */
79 /* #define EFAULT 14 */ /* Bad address */
80 /* #define EHOSTDOWN 64 */ /* Host is down */
81 /* #define EHOSTUNREACH 65 */ /* No route to host */
82
83 /* Source ip_output.c. extern'd in ip_var.h */
84 extern u_short ip_id;
85
86 #if defined(__linux__)
87 #define IPV6_VERSION 0x60
88 #endif
89
90 #if defined(INVARIANTS)
91 #include <stdlib.h>
92
93 static inline void
terminate_non_graceful(void)94 terminate_non_graceful(void) {
95 abort();
96 }
97
98 #define panic(...) \
99 do { \
100 SCTP_PRINTF("%s(): ", __func__); \
101 SCTP_PRINTF(__VA_ARGS__); \
102 SCTP_PRINTF("\n"); \
103 terminate_non_graceful(); \
104 } while (0)
105
106 #define KASSERT(cond, args) \
107 do { \
108 if (!(cond)) { \
109 panic args ; \
110 } \
111 } while (0)
112 #else
113 #define KASSERT(cond, args)
114 #endif
115
116 /* necessary for sctp_pcb.c */
117 extern int ip_defttl;
118 #endif
119