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uipc_domain.c revision 1.4
      1  1.1     cgd /*
      2  1.1     cgd  * Copyright (c) 1982, 1986 Regents of the University of California.
      3  1.1     cgd  * All rights reserved.
      4  1.1     cgd  *
      5  1.1     cgd  * Redistribution and use in source and binary forms, with or without
      6  1.1     cgd  * modification, are permitted provided that the following conditions
      7  1.1     cgd  * are met:
      8  1.1     cgd  * 1. Redistributions of source code must retain the above copyright
      9  1.1     cgd  *    notice, this list of conditions and the following disclaimer.
     10  1.1     cgd  * 2. Redistributions in binary form must reproduce the above copyright
     11  1.1     cgd  *    notice, this list of conditions and the following disclaimer in the
     12  1.1     cgd  *    documentation and/or other materials provided with the distribution.
     13  1.1     cgd  * 3. All advertising materials mentioning features or use of this software
     14  1.1     cgd  *    must display the following acknowledgement:
     15  1.1     cgd  *	This product includes software developed by the University of
     16  1.1     cgd  *	California, Berkeley and its contributors.
     17  1.1     cgd  * 4. Neither the name of the University nor the names of its contributors
     18  1.1     cgd  *    may be used to endorse or promote products derived from this software
     19  1.1     cgd  *    without specific prior written permission.
     20  1.1     cgd  *
     21  1.1     cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  1.1     cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  1.1     cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  1.1     cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  1.1     cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  1.1     cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  1.1     cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  1.1     cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  1.1     cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  1.1     cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  1.1     cgd  * SUCH DAMAGE.
     32  1.1     cgd  *
     33  1.3     cgd  *	from: @(#)uipc_domain.c	7.9 (Berkeley) 3/4/91
     34  1.4  andrew  *	$Id: uipc_domain.c,v 1.4 1993/06/27 06:01:59 andrew Exp $
     35  1.1     cgd  */
     36  1.1     cgd 
     37  1.1     cgd #include <sys/cdefs.h>
     38  1.1     cgd #include "param.h"
     39  1.4  andrew #include "systm.h"
     40  1.1     cgd #include "socket.h"
     41  1.1     cgd #include "protosw.h"
     42  1.1     cgd #include "domain.h"
     43  1.1     cgd #include "mbuf.h"
     44  1.1     cgd #include "time.h"
     45  1.1     cgd #include "kernel.h"
     46  1.1     cgd 
     47  1.1     cgd #define	ADDDOMAIN(x)	{ \
     48  1.1     cgd 	extern struct domain __CONCAT(x,domain); \
     49  1.1     cgd 	__CONCAT(x,domain.dom_next) = domains; \
     50  1.1     cgd 	domains = &__CONCAT(x,domain); \
     51  1.1     cgd }
     52  1.1     cgd 
     53  1.4  andrew void pffasttimo __P((caddr_t));
     54  1.4  andrew void pfslowtimo __P((caddr_t));
     55  1.4  andrew 
     56  1.4  andrew void
     57  1.1     cgd domaininit()
     58  1.1     cgd {
     59  1.1     cgd 	register struct domain *dp;
     60  1.1     cgd 	register struct protosw *pr;
     61  1.1     cgd 
     62  1.1     cgd #undef unix
     63  1.1     cgd #ifndef lint
     64  1.1     cgd 	ADDDOMAIN(unix);
     65  1.1     cgd 	ADDDOMAIN(route);
     66  1.1     cgd #ifdef INET
     67  1.1     cgd 	ADDDOMAIN(inet);
     68  1.1     cgd #endif
     69  1.1     cgd #ifdef NS
     70  1.1     cgd 	ADDDOMAIN(ns);
     71  1.1     cgd #endif
     72  1.1     cgd #ifdef ISO
     73  1.1     cgd 	ADDDOMAIN(iso);
     74  1.1     cgd #endif
     75  1.1     cgd #ifdef RMP
     76  1.1     cgd 	ADDDOMAIN(rmp);
     77  1.1     cgd #endif
     78  1.1     cgd #ifdef CCITT
     79  1.1     cgd 	ADDDOMAIN(ccitt);
     80  1.1     cgd #endif
     81  1.2   glass #ifdef IMP
     82  1.1     cgd 	ADDDOMAIN(imp);
     83  1.1     cgd #endif
     84  1.1     cgd #endif
     85  1.1     cgd 
     86  1.1     cgd 	for (dp = domains; dp; dp = dp->dom_next) {
     87  1.1     cgd 		if (dp->dom_init)
     88  1.1     cgd 			(*dp->dom_init)();
     89  1.1     cgd 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
     90  1.1     cgd 			if (pr->pr_init)
     91  1.1     cgd 				(*pr->pr_init)();
     92  1.1     cgd 	}
     93  1.1     cgd 
     94  1.1     cgd if (max_linkhdr < 16)		/* XXX */
     95  1.1     cgd max_linkhdr = 16;
     96  1.1     cgd 	max_hdr = max_linkhdr + max_protohdr;
     97  1.1     cgd 	max_datalen = MHLEN - max_hdr;
     98  1.4  andrew 	pffasttimo(NULL);
     99  1.4  andrew 	pfslowtimo(NULL);
    100  1.1     cgd }
    101  1.1     cgd 
    102  1.1     cgd struct protosw *
    103  1.1     cgd pffindtype(family, type)
    104  1.1     cgd 	int family, type;
    105  1.1     cgd {
    106  1.1     cgd 	register struct domain *dp;
    107  1.1     cgd 	register struct protosw *pr;
    108  1.1     cgd 
    109  1.1     cgd 	for (dp = domains; dp; dp = dp->dom_next)
    110  1.1     cgd 		if (dp->dom_family == family)
    111  1.1     cgd 			goto found;
    112  1.1     cgd 	return (0);
    113  1.1     cgd found:
    114  1.1     cgd 	for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    115  1.1     cgd 		if (pr->pr_type && pr->pr_type == type)
    116  1.1     cgd 			return (pr);
    117  1.1     cgd 	return (0);
    118  1.1     cgd }
    119  1.1     cgd 
    120  1.1     cgd struct protosw *
    121  1.1     cgd pffindproto(family, protocol, type)
    122  1.1     cgd 	int family, protocol, type;
    123  1.1     cgd {
    124  1.1     cgd 	register struct domain *dp;
    125  1.1     cgd 	register struct protosw *pr;
    126  1.1     cgd 	struct protosw *maybe = 0;
    127  1.1     cgd 
    128  1.1     cgd 	if (family == 0)
    129  1.1     cgd 		return (0);
    130  1.1     cgd 	for (dp = domains; dp; dp = dp->dom_next)
    131  1.1     cgd 		if (dp->dom_family == family)
    132  1.1     cgd 			goto found;
    133  1.1     cgd 	return (0);
    134  1.1     cgd found:
    135  1.1     cgd 	for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
    136  1.1     cgd 		if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
    137  1.1     cgd 			return (pr);
    138  1.1     cgd 
    139  1.1     cgd 		if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
    140  1.1     cgd 		    pr->pr_protocol == 0 && maybe == (struct protosw *)0)
    141  1.1     cgd 			maybe = pr;
    142  1.1     cgd 	}
    143  1.1     cgd 	return (maybe);
    144  1.1     cgd }
    145  1.1     cgd 
    146  1.4  andrew void
    147  1.1     cgd pfctlinput(cmd, sa)
    148  1.1     cgd 	int cmd;
    149  1.1     cgd 	struct sockaddr *sa;
    150  1.1     cgd {
    151  1.1     cgd 	register struct domain *dp;
    152  1.1     cgd 	register struct protosw *pr;
    153  1.1     cgd 
    154  1.1     cgd 	for (dp = domains; dp; dp = dp->dom_next)
    155  1.1     cgd 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    156  1.1     cgd 			if (pr->pr_ctlinput)
    157  1.1     cgd 				(*pr->pr_ctlinput)(cmd, sa, (caddr_t) 0);
    158  1.1     cgd }
    159  1.1     cgd 
    160  1.4  andrew /* ARGSUSED */
    161  1.4  andrew void
    162  1.4  andrew pfslowtimo(caddr_t arg)
    163  1.1     cgd {
    164  1.1     cgd 	register struct domain *dp;
    165  1.1     cgd 	register struct protosw *pr;
    166  1.1     cgd 
    167  1.1     cgd 	for (dp = domains; dp; dp = dp->dom_next)
    168  1.1     cgd 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    169  1.1     cgd 			if (pr->pr_slowtimo)
    170  1.1     cgd 				(*pr->pr_slowtimo)();
    171  1.1     cgd 	timeout(pfslowtimo, (caddr_t)0, hz/2);
    172  1.1     cgd }
    173  1.1     cgd 
    174  1.4  andrew /* ARGSUSED */
    175  1.4  andrew void
    176  1.4  andrew pffasttimo(caddr_t arg)
    177  1.1     cgd {
    178  1.1     cgd 	register struct domain *dp;
    179  1.1     cgd 	register struct protosw *pr;
    180  1.1     cgd 
    181  1.1     cgd 	for (dp = domains; dp; dp = dp->dom_next)
    182  1.1     cgd 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    183  1.1     cgd 			if (pr->pr_fasttimo)
    184  1.1     cgd 				(*pr->pr_fasttimo)();
    185  1.1     cgd 	timeout(pffasttimo, (caddr_t)0, hz/5);
    186  1.1     cgd }
    187