1/*-
 2 * SPDX-License-Identifier: BSD-3-Clause
 3 *
 4 * Copyright (c) 1982, 1986, 1993
 5 *	The Regents of the University of California.  All rights reserved.
 6 *
 7 * Redistribution and use in source and binary forms, with or without
 8 * modification, are permitted provided that the following conditions
 9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)domain.h	8.1 (Berkeley) 6/2/93
32 */
33
34#ifndef _SYS_DOMAIN_H_
35#define _SYS_DOMAIN_H_
36#include <sys/queue.h>
37
38/*
39 * Structure per communications domain.
40 */
41
42/*
43 * Forward structure declarations for function prototypes [sic].
44 */
45struct	mbuf;
46struct	ifnet;
47struct	socket;
48struct	rib_head;
49
50struct domain {
51	SLIST_ENTRY(domain) dom_next;
52	int	dom_family;		/* AF_xxx */
53	u_int	dom_nprotosw;		/* length of dom_protosw[] */
54	char	*dom_name;
55	int	dom_flags;
56	int	(*dom_probe)(void);	/* check for support (optional) */
57	int	(*dom_externalize)	/* externalize access rights */
58		(struct mbuf *, struct mbuf **, int);
59	void	(*dom_dispose)		/* dispose of internalized rights */
60		(struct socket *);
61	struct rib_head *(*dom_rtattach)	/* initialize routing table */
62		(uint32_t);
63	void	(*dom_rtdetach)		/* clean up routing table */
64		(struct rib_head *);
65	void	*(*dom_ifattach)(struct ifnet *);
66	void	(*dom_ifdetach)(struct ifnet *, void *);
67	int	(*dom_ifmtu)(struct ifnet *);
68					/* af-dependent data on ifnet */
69	struct	protosw *dom_protosw[];
70};
71
72/* dom_flags */
73#define	DOMF_UNLOADABLE	0x0004	/* Can be unloaded */
74
75#ifdef _KERNEL
76extern int	domain_init_status;
77extern SLIST_HEAD(domainhead, domain) domains;
78void		domain_add(struct domain *);
79void		domain_remove(struct domain *);
80#ifdef VIMAGE
81void		vnet_domain_init(void *);
82void		vnet_domain_uninit(void *);
83#endif
84
85#define	DOMAIN_SET(name)						\
86	SYSINIT(domain_add_ ## name, SI_SUB_PROTO_DOMAIN,		\
87	    SI_ORDER_FIRST, domain_add, & name ## domain);		\
88	SYSUNINIT(domain_remove_ ## name, SI_SUB_PROTO_DOMAIN,		\
89	    SI_ORDER_FIRST, domain_remove, & name ## domain);
90#endif /* _KERNEL */
91
92#endif /* !_SYS_DOMAIN_H_ */