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uipc_domain.c revision 1.42
      1  1.42  jonathan /*	$NetBSD: uipc_domain.c,v 1.42 2003/08/06 20:34:35 jonathan Exp $	*/
      2  1.12       cgd 
      3   1.1       cgd /*
      4  1.11   mycroft  * Copyright (c) 1982, 1986, 1993
      5  1.11   mycroft  *	The Regents of the University of California.  All rights reserved.
      6   1.1       cgd  *
      7   1.1       cgd  * Redistribution and use in source and binary forms, with or without
      8   1.1       cgd  * modification, are permitted provided that the following conditions
      9   1.1       cgd  * are met:
     10   1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     11   1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     12   1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     13   1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     14   1.1       cgd  *    documentation and/or other materials provided with the distribution.
     15   1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     16   1.1       cgd  *    must display the following acknowledgement:
     17   1.1       cgd  *	This product includes software developed by the University of
     18   1.1       cgd  *	California, Berkeley and its contributors.
     19   1.1       cgd  * 4. Neither the name of the University nor the names of its contributors
     20   1.1       cgd  *    may be used to endorse or promote products derived from this software
     21   1.1       cgd  *    without specific prior written permission.
     22   1.1       cgd  *
     23   1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24   1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25   1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26   1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27   1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28   1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29   1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30   1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31   1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32   1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33   1.1       cgd  * SUCH DAMAGE.
     34   1.1       cgd  *
     35  1.18      fvdl  *	@(#)uipc_domain.c	8.3 (Berkeley) 2/14/95
     36   1.1       cgd  */
     37  1.36     lukem 
     38  1.36     lukem #include <sys/cdefs.h>
     39  1.42  jonathan __KERNEL_RCSID(0, "$NetBSD: uipc_domain.c,v 1.42 2003/08/06 20:34:35 jonathan Exp $");
     40  1.20  jonathan 
     41  1.20  jonathan #include "opt_inet.h"
     42  1.27   thorpej #include "opt_ipsec.h"
     43  1.20  jonathan #include "opt_atalk.h"
     44  1.21  jonathan #include "opt_ccitt.h"
     45  1.22  jonathan #include "opt_iso.h"
     46  1.23  jonathan #include "opt_ns.h"
     47  1.39    martin #include "opt_mbuftrace.h"
     48  1.24  jonathan #include "opt_natm.h"
     49  1.28  sommerfe #include "arp.h"
     50   1.1       cgd 
     51   1.5   mycroft #include <sys/param.h>
     52   1.5   mycroft #include <sys/socket.h>
     53   1.5   mycroft #include <sys/protosw.h>
     54   1.5   mycroft #include <sys/domain.h>
     55   1.5   mycroft #include <sys/mbuf.h>
     56   1.5   mycroft #include <sys/time.h>
     57   1.5   mycroft #include <sys/kernel.h>
     58  1.11   mycroft #include <sys/systm.h>
     59  1.30   thorpej #include <sys/callout.h>
     60  1.10       cgd #include <sys/proc.h>
     61  1.10       cgd #include <sys/sysctl.h>
     62  1.13  christos 
     63  1.11   mycroft void	pffasttimo __P((void *));
     64  1.11   mycroft void	pfslowtimo __P((void *));
     65  1.37      matt 
     66  1.37      matt struct	domain	*domains;
     67  1.11   mycroft 
     68  1.30   thorpej struct callout pffasttimo_ch, pfslowtimo_ch;
     69  1.30   thorpej 
     70  1.19   thorpej /*
     71  1.19   thorpej  * Current time values for fast and slow timeouts.  We can use u_int
     72  1.19   thorpej  * relatively safely.  The fast timer will roll over in 27 years and
     73  1.19   thorpej  * the slow timer in 68 years.
     74  1.19   thorpej  */
     75  1.19   thorpej u_int	pfslowtimo_now;
     76  1.19   thorpej u_int	pffasttimo_now;
     77  1.19   thorpej 
     78   1.1       cgd #define	ADDDOMAIN(x)	{ \
     79   1.1       cgd 	extern struct domain __CONCAT(x,domain); \
     80   1.1       cgd 	__CONCAT(x,domain.dom_next) = domains; \
     81   1.1       cgd 	domains = &__CONCAT(x,domain); \
     82   1.1       cgd }
     83   1.1       cgd 
     84   1.4    andrew void
     85   1.1       cgd domaininit()
     86   1.1       cgd {
     87  1.31  augustss 	struct domain *dp;
     88  1.31  augustss 	struct protosw *pr;
     89   1.1       cgd 
     90   1.1       cgd #undef unix
     91  1.26    itojun 	/*
     92  1.26    itojun 	 * KAME NOTE: ADDDOMAIN(route) is moved to the last part so that
     93  1.26    itojun 	 * it will be initialized as the *first* element.  confusing!
     94  1.26    itojun 	 */
     95   1.1       cgd #ifndef lint
     96   1.1       cgd 	ADDDOMAIN(unix);
     97   1.1       cgd #ifdef INET
     98   1.1       cgd 	ADDDOMAIN(inet);
     99   1.1       cgd #endif
    100  1.26    itojun #ifdef INET6
    101  1.26    itojun 	ADDDOMAIN(inet6);
    102  1.26    itojun #endif
    103   1.1       cgd #ifdef NS
    104   1.1       cgd 	ADDDOMAIN(ns);
    105   1.1       cgd #endif
    106   1.1       cgd #ifdef ISO
    107   1.1       cgd 	ADDDOMAIN(iso);
    108   1.1       cgd #endif
    109   1.1       cgd #ifdef CCITT
    110   1.1       cgd 	ADDDOMAIN(ccitt);
    111  1.15     chuck #endif
    112  1.15     chuck #ifdef NATM
    113  1.15     chuck 	ADDDOMAIN(natm);
    114  1.17  christos #endif
    115  1.17  christos #ifdef NETATALK
    116  1.17  christos 	ADDDOMAIN(atalk);
    117   1.1       cgd #endif
    118  1.42  jonathan #if defined(IPSEC) || defined(FAST_IPSEC)
    119  1.26    itojun 	ADDDOMAIN(key);
    120  1.28  sommerfe #endif
    121  1.33    itojun #ifdef INET
    122  1.28  sommerfe #if NARP > 0
    123  1.28  sommerfe 	ADDDOMAIN(arp);
    124  1.33    itojun #endif
    125  1.26    itojun #endif
    126  1.26    itojun 	ADDDOMAIN(route);
    127  1.25   thorpej #endif /* ! lint */
    128   1.1       cgd 
    129   1.1       cgd 	for (dp = domains; dp; dp = dp->dom_next) {
    130   1.1       cgd 		if (dp->dom_init)
    131   1.1       cgd 			(*dp->dom_init)();
    132  1.38      matt #ifdef MBUFTRACE
    133  1.38      matt 		if (dp->dom_mowner.mo_name[0] == '\0') {
    134  1.38      matt 			strncpy(dp->dom_mowner.mo_name, dp->dom_name,
    135  1.38      matt 			    sizeof(dp->dom_mowner.mo_name));
    136  1.38      matt 			MOWNER_ATTACH(&dp->dom_mowner);
    137  1.38      matt 		}
    138  1.38      matt #endif
    139   1.1       cgd 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    140   1.1       cgd 			if (pr->pr_init)
    141   1.1       cgd 				(*pr->pr_init)();
    142   1.1       cgd 	}
    143   1.1       cgd 
    144  1.16  explorer 	if (max_linkhdr < 16)		/* XXX */
    145  1.16  explorer 		max_linkhdr = 16;
    146   1.1       cgd 	max_hdr = max_linkhdr + max_protohdr;
    147   1.1       cgd 	max_datalen = MHLEN - max_hdr;
    148  1.30   thorpej 
    149  1.30   thorpej 	callout_init(&pffasttimo_ch);
    150  1.30   thorpej 	callout_init(&pfslowtimo_ch);
    151  1.30   thorpej 
    152  1.30   thorpej 	callout_reset(&pffasttimo_ch, 1, pffasttimo, NULL);
    153  1.30   thorpej 	callout_reset(&pfslowtimo_ch, 1, pfslowtimo, NULL);
    154   1.1       cgd }
    155   1.1       cgd 
    156  1.29   thorpej struct domain *
    157  1.29   thorpej pffinddomain(family)
    158  1.29   thorpej 	int family;
    159  1.29   thorpej {
    160  1.29   thorpej 	struct domain *dp;
    161  1.29   thorpej 
    162  1.29   thorpej 	for (dp = domains; dp != NULL; dp = dp->dom_next)
    163  1.29   thorpej 		if (dp->dom_family == family)
    164  1.29   thorpej 			return (dp);
    165  1.29   thorpej 	return (NULL);
    166  1.29   thorpej }
    167  1.29   thorpej 
    168   1.1       cgd struct protosw *
    169   1.1       cgd pffindtype(family, type)
    170   1.1       cgd 	int family, type;
    171   1.1       cgd {
    172  1.29   thorpej 	struct domain *dp;
    173  1.29   thorpej 	struct protosw *pr;
    174  1.29   thorpej 
    175  1.29   thorpej 	dp = pffinddomain(family);
    176  1.29   thorpej 	if (dp == NULL)
    177  1.29   thorpej 		return (NULL);
    178   1.1       cgd 
    179   1.1       cgd 	for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    180   1.1       cgd 		if (pr->pr_type && pr->pr_type == type)
    181   1.1       cgd 			return (pr);
    182  1.29   thorpej 
    183  1.29   thorpej 	return (NULL);
    184   1.1       cgd }
    185   1.1       cgd 
    186   1.1       cgd struct protosw *
    187   1.1       cgd pffindproto(family, protocol, type)
    188   1.1       cgd 	int family, protocol, type;
    189   1.1       cgd {
    190  1.29   thorpej 	struct domain *dp;
    191  1.29   thorpej 	struct protosw *pr;
    192  1.29   thorpej 	struct protosw *maybe = NULL;
    193   1.1       cgd 
    194   1.1       cgd 	if (family == 0)
    195  1.29   thorpej 		return (NULL);
    196  1.29   thorpej 
    197  1.29   thorpej 	dp = pffinddomain(family);
    198  1.29   thorpej 	if (dp == NULL)
    199  1.29   thorpej 		return (NULL);
    200  1.29   thorpej 
    201   1.1       cgd 	for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
    202   1.1       cgd 		if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
    203   1.1       cgd 			return (pr);
    204   1.1       cgd 
    205   1.1       cgd 		if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
    206  1.29   thorpej 		    pr->pr_protocol == 0 && maybe == NULL)
    207   1.1       cgd 			maybe = pr;
    208   1.1       cgd 	}
    209   1.1       cgd 	return (maybe);
    210  1.10       cgd }
    211  1.10       cgd 
    212  1.11   mycroft int
    213  1.41      fvdl net_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
    214  1.10       cgd 	int *name;
    215  1.10       cgd 	u_int namelen;
    216  1.10       cgd 	void *oldp;
    217  1.10       cgd 	size_t *oldlenp;
    218  1.10       cgd 	void *newp;
    219  1.10       cgd 	size_t newlen;
    220  1.41      fvdl 	struct proc *p;
    221  1.10       cgd {
    222  1.29   thorpej 	struct domain *dp;
    223  1.29   thorpej 	struct protosw *pr;
    224  1.10       cgd 	int family, protocol;
    225  1.10       cgd 
    226  1.10       cgd 	/*
    227  1.26    itojun 	 * All sysctl names at this level are nonterminal.
    228  1.26    itojun 	 * PF_KEY: next component is protocol family, and then at least one
    229  1.26    itojun 	 *	additional component.
    230  1.26    itojun 	 * usually: next two components are protocol family and protocol
    231  1.26    itojun 	 *	number, then at least one addition component.
    232  1.10       cgd 	 */
    233  1.26    itojun 	if (namelen < 2)
    234  1.10       cgd 		return (EISDIR);		/* overloaded */
    235  1.11   mycroft 	family = name[0];
    236  1.11   mycroft 
    237  1.11   mycroft 	if (family == 0)
    238  1.11   mycroft 		return (0);
    239  1.29   thorpej 
    240  1.29   thorpej 	dp = pffinddomain(family);
    241  1.29   thorpej 	if (dp == NULL)
    242  1.29   thorpej 		return (ENOPROTOOPT);
    243  1.29   thorpej 
    244  1.26    itojun 	switch (family) {
    245  1.42  jonathan #if defined(IPSEC) || defined(FAST_IPSEC)
    246  1.26    itojun 	case PF_KEY:
    247  1.26    itojun 		pr = dp->dom_protosw;
    248  1.26    itojun 		if (pr->pr_sysctl)
    249  1.26    itojun 			return ((*pr->pr_sysctl)(name + 1, namelen - 1,
    250  1.26    itojun 				oldp, oldlenp, newp, newlen));
    251  1.26    itojun 		return (ENOPROTOOPT);
    252  1.26    itojun #endif
    253  1.26    itojun 	default:
    254  1.26    itojun 		break;
    255  1.26    itojun 	}
    256  1.26    itojun 	if (namelen < 3)
    257  1.26    itojun 		return (EISDIR);		/* overloaded */
    258  1.26    itojun 	protocol = name[1];
    259  1.11   mycroft 	for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    260  1.11   mycroft 		if (pr->pr_protocol == protocol && pr->pr_sysctl)
    261  1.11   mycroft 			return ((*pr->pr_sysctl)(name + 2, namelen - 2,
    262  1.11   mycroft 			    oldp, oldlenp, newp, newlen));
    263  1.10       cgd 	return (ENOPROTOOPT);
    264   1.1       cgd }
    265   1.1       cgd 
    266   1.4    andrew void
    267   1.1       cgd pfctlinput(cmd, sa)
    268   1.1       cgd 	int cmd;
    269   1.1       cgd 	struct sockaddr *sa;
    270   1.1       cgd {
    271  1.31  augustss 	struct domain *dp;
    272  1.31  augustss 	struct protosw *pr;
    273   1.1       cgd 
    274   1.1       cgd 	for (dp = domains; dp; dp = dp->dom_next)
    275   1.1       cgd 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    276   1.1       cgd 			if (pr->pr_ctlinput)
    277  1.13  christos 				(*pr->pr_ctlinput)(cmd, sa, NULL);
    278  1.34    itojun }
    279  1.34    itojun 
    280  1.34    itojun void
    281  1.34    itojun pfctlinput2(cmd, sa, ctlparam)
    282  1.34    itojun 	int cmd;
    283  1.34    itojun 	struct sockaddr *sa;
    284  1.34    itojun 	void *ctlparam;
    285  1.34    itojun {
    286  1.34    itojun 	struct domain *dp;
    287  1.34    itojun 	struct protosw *pr;
    288  1.34    itojun 
    289  1.34    itojun 	if (!sa)
    290  1.34    itojun 		return;
    291  1.34    itojun 	for (dp = domains; dp; dp = dp->dom_next) {
    292  1.34    itojun 		/*
    293  1.34    itojun 		 * the check must be made by xx_ctlinput() anyways, to
    294  1.34    itojun 		 * make sure we use data item pointed to by ctlparam in
    295  1.34    itojun 		 * correct way.  the following check is made just for safety.
    296  1.34    itojun 		 */
    297  1.34    itojun 		if (dp->dom_family != sa->sa_family)
    298  1.34    itojun 			continue;
    299  1.34    itojun 
    300  1.34    itojun 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    301  1.34    itojun 			if (pr->pr_ctlinput)
    302  1.34    itojun 				(*pr->pr_ctlinput)(cmd, sa, ctlparam);
    303  1.34    itojun 	}
    304   1.1       cgd }
    305   1.1       cgd 
    306   1.4    andrew void
    307   1.6   deraadt pfslowtimo(arg)
    308   1.8       cgd 	void *arg;
    309   1.1       cgd {
    310  1.31  augustss 	struct domain *dp;
    311  1.31  augustss 	struct protosw *pr;
    312   1.1       cgd 
    313  1.19   thorpej 	pfslowtimo_now++;
    314  1.19   thorpej 
    315   1.1       cgd 	for (dp = domains; dp; dp = dp->dom_next)
    316   1.1       cgd 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    317   1.1       cgd 			if (pr->pr_slowtimo)
    318   1.1       cgd 				(*pr->pr_slowtimo)();
    319  1.30   thorpej 	callout_reset(&pfslowtimo_ch, hz / 2, pfslowtimo, NULL);
    320   1.1       cgd }
    321   1.1       cgd 
    322   1.4    andrew void
    323   1.6   deraadt pffasttimo(arg)
    324   1.8       cgd 	void *arg;
    325   1.1       cgd {
    326  1.31  augustss 	struct domain *dp;
    327  1.31  augustss 	struct protosw *pr;
    328  1.19   thorpej 
    329  1.19   thorpej 	pffasttimo_now++;
    330   1.1       cgd 
    331   1.1       cgd 	for (dp = domains; dp; dp = dp->dom_next)
    332   1.1       cgd 		for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
    333   1.1       cgd 			if (pr->pr_fasttimo)
    334   1.1       cgd 				(*pr->pr_fasttimo)();
    335  1.30   thorpej 	callout_reset(&pffasttimo_ch, hz / 5, pffasttimo, NULL);
    336   1.1       cgd }
    337