xref: /netbsd/sys/sys/domain.h (revision 42a2659f)
1 /*	$NetBSD: domain.h,v 1.35 2022/09/03 02:53:18 thorpej Exp $	*/
2 
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 
37 /*
38  * Structure per communications domain.
39  */
40 #include <sys/mbuf.h>
41 #include <sys/socket.h>
42 #include <net/route.h>
43 
44 /*
45  * Forward structure declarations for function prototypes [sic].
46  */
47 struct	lwp;
48 struct	mbuf;
49 struct	ifnet;
50 struct	ifqueue;
51 struct  sockaddr;
52 
53 LIST_HEAD(dom_rtlist, route);
54 
55 struct	domain {
56 	int	dom_family;		/* AF_xxx */
57 	const char *dom_name;
58 	void	(*dom_init)		/* initialize domain data structures */
59 			(void);
60 	int	(*dom_externalize)	/* externalize access rights */
61 			(struct mbuf *, struct lwp *, int);
62 	void	(*dom_dispose)		/* dispose of internalized rights */
63 			(struct mbuf *);
64 	const struct protosw *dom_protosw, *dom_protoswNPROTOSW;
65 	int	(*dom_rtattach)		/* initialize routing table */
66 			(rtbl_t **, int);
67 	int	dom_rtoffset;		/* an arg to rtattach, in bits */
68 	int	dom_maxrtkey;		/* for routing layer */
69 	void	(*dom_if_up)		/* ifnet brought up */
70 			(struct ifnet *);
71 	void	(*dom_if_down)		/* ifnet brought down */
72 			(struct ifnet *);
73 	void	*(*dom_ifattach)	/* attach af-dependent data on ifnet */
74 			(struct ifnet *);
75 	void	(*dom_ifdetach)		/* detach af-dependent data on ifnet */
76 			(struct ifnet *, void *);
77 	void	(*dom_if_link_state_change)
78 			(struct ifnet *, int);
79 	const void *(*dom_sockaddr_const_addr)(const struct sockaddr *,
80 					       socklen_t *);
81 	void	*(*dom_sockaddr_addr)(struct sockaddr *, socklen_t *);
82 	int	(*dom_sockaddr_cmp)(const struct sockaddr *,
83 	                            const struct sockaddr *);
84 	struct sockaddr *(*dom_sockaddr_externalize)(struct sockaddr *,
85 	                                             socklen_t,
86 						     const struct sockaddr *);
87 	const struct sockaddr *dom_sa_any;
88 	struct ifqueue *dom_ifqueues[2]; /* XXX G/C ifqueue for domain */
89 	STAILQ_ENTRY(domain) dom_link;
90 	struct	mowner dom_mowner;
91 	uint_fast8_t	dom_sa_cmpofs;
92 	uint_fast8_t	dom_sa_cmplen;
93 };
94 
95 STAILQ_HEAD(domainhead,domain);
96 
97 #ifdef _KERNEL
98 #define	DOMAIN_DEFINE(name)	\
99 	extern struct domain name; \
100 	__link_set_add_data(domains, name)
101 
102 #define	DOMAIN_FOREACH(dom)	STAILQ_FOREACH(dom, &domains, dom_link)
103 extern struct domainhead domains;
104 void domain_attach(struct domain *);
105 void domaininit(bool);
106 void domaininit_post(void);
107 #endif
108 
109 #endif /* !_SYS_DOMAIN_H_ */
110