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domain.h revision 1.25 
      1 /*	$NetBSD: domain.h,v 1.25 2007/05/02 20:40:29 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 
     42 /*
     43  * Forward structure declarations for function prototypes [sic].
     44  */
     45 struct	lwp;
     46 struct	mbuf;
     47 struct	ifnet;
     48 struct	ifqueue;
     49 struct  route;
     50 struct  sockaddr;
     51 
     52 LIST_HEAD(dom_rtlist, route);
     53 
     54 struct	domain {
     55 	int	dom_family;		/* AF_xxx */
     56 	const char *dom_name;
     57 	void	(*dom_init)		/* initialize domain data structures */
     58 			(void);
     59 	int	(*dom_externalize)	/* externalize access rights */
     60 			(struct mbuf *, struct lwp *);
     61 	void	(*dom_dispose)		/* dispose of internalized rights */
     62 			(struct mbuf *);
     63 	const struct protosw *dom_protosw, *dom_protoswNPROTOSW;
     64 	int	(*dom_rtattach)		/* initialize routing table */
     65 			(void **, int);
     66 	int	dom_rtoffset;		/* an arg to rtattach, in bits */
     67 	int	dom_maxrtkey;		/* for routing layer */
     68 	void	*(*dom_ifattach)	/* attach af-dependent data on ifnet */
     69 			(struct ifnet *);
     70 	void	(*dom_ifdetach)		/* detach af-dependent data on ifnet */
     71 			(struct ifnet *, void *);
     72 	int	(*dom_sockaddr_cmp)(const struct sockaddr *,
     73 	                            const struct sockaddr *);
     74 	struct ifqueue *dom_ifqueues[2]; /* ifqueue for domain */
     75 	STAILQ_ENTRY(domain) dom_link;
     76 	struct	mowner dom_mowner;
     77 	struct pool	*dom_sa_pool;
     78 	uint_fast8_t	dom_sa_len;
     79 	uint_fast8_t	dom_sa_cmpofs;
     80 	uint_fast8_t	dom_sa_cmplen;
     81 	struct dom_rtlist dom_rtcache;
     82 };
     83 
     84 STAILQ_HEAD(domainhead,domain);
     85 
     86 #ifdef _KERNEL
     87 #define	DOMAIN_DEFINE(name)	\
     88 	extern struct domain name; \
     89 	__link_set_add_data(domains, name)
     90 
     91 #define	DOMAIN_FOREACH(dom)	STAILQ_FOREACH(dom, &domains, dom_link)
     92 extern struct domainhead domains;
     93 void domain_attach(struct domain *);
     94 void domaininit(void);
     95 #endif
     96 
     97 #endif /* !_SYS_DOMAIN_H_ */
     98