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domain.h revision 1.29 
      1 /*	$NetBSD: domain.h,v 1.29 2009/09/11 22:06:29 dyoung 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 
     43 /*
     44  * Forward structure declarations for function prototypes [sic].
     45  */
     46 struct	lwp;
     47 struct	mbuf;
     48 struct	ifnet;
     49 struct	ifqueue;
     50 struct  route;
     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 *);
     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 			(void **, int);
     67 	int	dom_rtoffset;		/* an arg to rtattach, in bits */
     68 	int	dom_maxrtkey;		/* for routing layer */
     69 	void	*(*dom_ifattach)	/* attach af-dependent data on ifnet */
     70 			(struct ifnet *);
     71 	void	(*dom_ifdetach)		/* detach af-dependent data on ifnet */
     72 			(struct ifnet *, void *);
     73 	const void *(*dom_sockaddr_const_addr)(const struct sockaddr *,
     74 					       socklen_t *);
     75 	void	*(*dom_sockaddr_addr)(struct sockaddr *, socklen_t *);
     76 	int	(*dom_sockaddr_cmp)(const struct sockaddr *,
     77 	                            const struct sockaddr *);
     78 	struct sockaddr *(*dom_sockaddr_externalize)(struct sockaddr *,
     79 	                                             socklen_t,
     80 						     const struct sockaddr *);
     81 	const struct sockaddr *dom_sa_any;
     82 	struct ifqueue *dom_ifqueues[2]; /* ifqueue for domain */
     83 	STAILQ_ENTRY(domain) dom_link;
     84 	struct	mowner dom_mowner;
     85 	uint_fast8_t	dom_sa_cmpofs;
     86 	uint_fast8_t	dom_sa_cmplen;
     87 	struct dom_rtlist dom_rtcache;
     88 };
     89 
     90 STAILQ_HEAD(domainhead,domain);
     91 
     92 #ifdef _KERNEL
     93 #define	DOMAIN_DEFINE(name)	\
     94 	extern struct domain name; \
     95 	__link_set_add_data(domains, name)
     96 
     97 #define	DOMAIN_FOREACH(dom)	STAILQ_FOREACH(dom, &domains, dom_link)
     98 extern struct domainhead domains;
     99 void domain_attach(struct domain *);
    100 void domaininit(bool);
    101 #endif
    102 
    103 #endif /* !_SYS_DOMAIN_H_ */
    104