1/*-
2 * Copyright (c) 1982, 1986, 1993
3 *	The Regents of the University of California.  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 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	@(#)domain.h	8.1 (Berkeley) 6/2/93
30 * $FreeBSD$
31 */
32
33#ifndef _SYS_DOMAIN_H_
34#define _SYS_DOMAIN_H_
35
36/*
37 * Structure per communications domain.
38 */
39
40/*
41 * Forward structure declarations for function prototypes [sic].
42 */
43struct	mbuf;
44struct	ifnet;
45struct	socket;
46
47struct domain {
48	int	dom_family;		/* AF_xxx */
49	char	*dom_name;
50	void	(*dom_init)		/* initialize domain data structures */
51		(void);
52	void	(*dom_destroy)		/* cleanup structures / state */
53		(void);
54	int	(*dom_externalize)	/* externalize access rights */
55		(struct mbuf *, struct mbuf **, int);
56	void	(*dom_dispose)		/* dispose of internalized rights */
57		(struct mbuf *);
58	struct	protosw *dom_protosw, *dom_protoswNPROTOSW;
59	struct	domain *dom_next;
60	int	(*dom_rtattach)		/* initialize routing table */
61		(void **, int);
62	int	(*dom_rtdetach)		/* clean up routing table */
63		(void **, int);
64	int	dom_rtoffset;		/* an arg to rtattach, in bits */
65		/* XXX MRT.
66		 * rtoffset May be 0 if the domain supplies its own rtattach(),
67		 * in which case, a 0 indicates it's being called from
68		 * vfs_export.c (HACK)  Only for AF_INET{,6} at this time.
69		 * Temporary ABI compat hack.. fix post RELENG_7
70		 */
71	int	dom_maxrtkey;		/* for routing layer */
72	void	*(*dom_ifattach)(struct ifnet *);
73	void	(*dom_ifdetach)(struct ifnet *, void *);
74					/* af-dependent data on ifnet */
75};
76
77#ifdef _KERNEL
78extern int	domain_init_status;
79extern struct	domain *domains;
80void		domain_add(void *);
81void		domain_init(void *);
82
83/* Hack to fix dom_dispose for unix domain sockets. */
84void		unp_dispose_so(struct socket *);
85#ifdef VIMAGE
86void		vnet_domain_init(void *);
87void		vnet_domain_uninit(void *);
88#endif
89
90#define	DOMAIN_SET(name)						\
91	SYSINIT(domain_add_ ## name, SI_SUB_PROTO_DOMAIN,		\
92	    SI_ORDER_FIRST, domain_add, & name ## domain);		\
93	SYSINIT(domain_init_ ## name, SI_SUB_PROTO_DOMAIN,		\
94	    SI_ORDER_SECOND, domain_init, & name ## domain);
95#ifdef VIMAGE
96#define	VNET_DOMAIN_SET(name)						\
97	SYSINIT(domain_add_ ## name, SI_SUB_PROTO_DOMAIN,		\
98	    SI_ORDER_FIRST, domain_add, & name ## domain);		\
99	VNET_SYSINIT(vnet_domain_init_ ## name, SI_SUB_PROTO_DOMAIN,	\
100	    SI_ORDER_SECOND, vnet_domain_init, & name ## domain);	\
101	VNET_SYSUNINIT(vnet_domain_uninit_ ## name,			\
102	    SI_SUB_PROTO_DOMAIN, SI_ORDER_SECOND, vnet_domain_uninit,	\
103	    & name ## domain)
104#else /* !VIMAGE */
105#define	VNET_DOMAIN_SET(name)	DOMAIN_SET(name)
106#endif /* VIMAGE */
107
108#endif /* _KERNEL */
109
110#endif /* !_SYS_DOMAIN_H_ */
111