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
32#ifndef _SYS_DOMAIN_H_
33#define _SYS_DOMAIN_H_
34#include <sys/queue.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;
46struct rib_head;
47
48struct domain {
49 SLIST_ENTRY(domain) dom_next;
50 int dom_family; /* AF_xxx */
51 u_int dom_nprotosw; /* length of dom_protosw[] */
52 char *dom_name;
53 int dom_flags;
54 int (*dom_probe)(void); /* check for support (optional) */
55 struct rib_head *(*dom_rtattach) /* initialize routing table */
56 (uint32_t);
57 void (*dom_rtdetach) /* clean up routing table */
58 (struct rib_head *);
59 void *(*dom_ifattach)(struct ifnet *);
60 void (*dom_ifdetach)(struct ifnet *, void *);
61 int (*dom_ifmtu)(struct ifnet *);
62 /* af-dependent data on ifnet */
63 struct protosw *dom_protosw[];
64};
65
66/* dom_flags */
67#define DOMF_UNLOADABLE 0x0004 /* Can be unloaded */
68
69#ifdef _KERNEL
70extern int domain_init_status;
71extern SLIST_HEAD(domainhead, domain) domains;
72void domain_add(struct domain *);
73void domain_remove(struct domain *);
74#ifdef VIMAGE
75void vnet_domain_init(void *);
76void vnet_domain_uninit(void *);
77#endif
78
79#define DOMAIN_SET(name) \
80 SYSINIT(domain_add_ ## name, SI_SUB_PROTO_DOMAIN, \
81 SI_ORDER_FIRST, domain_add, & name ## domain); \
82 SYSUNINIT(domain_remove_ ## name, SI_SUB_PROTO_DOMAIN, \
83 SI_ORDER_FIRST, domain_remove, & name ## domain);
84#endif /* _KERNEL */
85
86#endif /* !_SYS_DOMAIN_H_ */