NetBSD/sys/kern/uipc_domain.c

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/* $NetBSD: uipc_domain.c,v 1.37 2002/05/12 20:36:58 matt Exp $ */
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/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
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*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
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* @(#)uipc_domain.c 8.3 (Berkeley) 2/14/95
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: uipc_domain.c,v 1.37 2002/05/12 20:36:58 matt Exp $");
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#include "opt_inet.h"
#include "opt_ipsec.h"
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#include "opt_atalk.h"
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#include "opt_ccitt.h"
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#include "opt_iso.h"
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#include "opt_ns.h"
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#include "opt_natm.h"
#include "arp.h"
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#include <sys/param.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/callout.h>
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#include <sys/proc.h>
#include <sys/sysctl.h>
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void pffasttimo __P((void *));
void pfslowtimo __P((void *));
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struct domain *domains;
struct callout pffasttimo_ch, pfslowtimo_ch;
/*
* Current time values for fast and slow timeouts. We can use u_int
* relatively safely. The fast timer will roll over in 27 years and
* the slow timer in 68 years.
*/
u_int pfslowtimo_now;
u_int pffasttimo_now;
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#define ADDDOMAIN(x) { \
extern struct domain __CONCAT(x,domain); \
__CONCAT(x,domain.dom_next) = domains; \
domains = &__CONCAT(x,domain); \
}
void
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domaininit()
{
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struct domain *dp;
struct protosw *pr;
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#undef unix
/*
* KAME NOTE: ADDDOMAIN(route) is moved to the last part so that
* it will be initialized as the *first* element. confusing!
*/
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#ifndef lint
ADDDOMAIN(unix);
#ifdef INET
ADDDOMAIN(inet);
#endif
#ifdef INET6
ADDDOMAIN(inet6);
#endif
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#ifdef NS
ADDDOMAIN(ns);
#endif
#ifdef ISO
ADDDOMAIN(iso);
#endif
#ifdef CCITT
ADDDOMAIN(ccitt);
#endif
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#ifdef NATM
ADDDOMAIN(natm);
#endif
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#ifdef NETATALK
ADDDOMAIN(atalk);
#endif
#ifdef IPSEC
ADDDOMAIN(key);
#endif
#ifdef INET
#if NARP > 0
ADDDOMAIN(arp);
#endif
#endif
ADDDOMAIN(route);
#endif /* ! lint */
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for (dp = domains; dp; dp = dp->dom_next) {
if (dp->dom_init)
(*dp->dom_init)();
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_init)
(*pr->pr_init)();
}
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if (max_linkhdr < 16) /* XXX */
max_linkhdr = 16;
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max_hdr = max_linkhdr + max_protohdr;
max_datalen = MHLEN - max_hdr;
callout_init(&pffasttimo_ch);
callout_init(&pfslowtimo_ch);
callout_reset(&pffasttimo_ch, 1, pffasttimo, NULL);
callout_reset(&pfslowtimo_ch, 1, pfslowtimo, NULL);
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}
struct domain *
pffinddomain(family)
int family;
{
struct domain *dp;
for (dp = domains; dp != NULL; dp = dp->dom_next)
if (dp->dom_family == family)
return (dp);
return (NULL);
}
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struct protosw *
pffindtype(family, type)
int family, type;
{
struct domain *dp;
struct protosw *pr;
dp = pffinddomain(family);
if (dp == NULL)
return (NULL);
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_type && pr->pr_type == type)
return (pr);
return (NULL);
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}
struct protosw *
pffindproto(family, protocol, type)
int family, protocol, type;
{
struct domain *dp;
struct protosw *pr;
struct protosw *maybe = NULL;
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if (family == 0)
return (NULL);
dp = pffinddomain(family);
if (dp == NULL)
return (NULL);
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
return (pr);
if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
pr->pr_protocol == 0 && maybe == NULL)
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maybe = pr;
}
return (maybe);
}
int
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net_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
int *name;
u_int namelen;
void *oldp;
size_t *oldlenp;
void *newp;
size_t newlen;
struct proc *p;
{
struct domain *dp;
struct protosw *pr;
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int family, protocol;
/*
* All sysctl names at this level are nonterminal.
* PF_KEY: next component is protocol family, and then at least one
* additional component.
* usually: next two components are protocol family and protocol
* number, then at least one addition component.
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*/
if (namelen < 2)
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return (EISDIR); /* overloaded */
family = name[0];
if (family == 0)
return (0);
dp = pffinddomain(family);
if (dp == NULL)
return (ENOPROTOOPT);
switch (family) {
#ifdef IPSEC
case PF_KEY:
pr = dp->dom_protosw;
if (pr->pr_sysctl)
return ((*pr->pr_sysctl)(name + 1, namelen - 1,
oldp, oldlenp, newp, newlen));
return (ENOPROTOOPT);
#endif
default:
break;
}
if (namelen < 3)
return (EISDIR); /* overloaded */
protocol = name[1];
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_protocol == protocol && pr->pr_sysctl)
return ((*pr->pr_sysctl)(name + 2, namelen - 2,
oldp, oldlenp, newp, newlen));
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return (ENOPROTOOPT);
}
void
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pfctlinput(cmd, sa)
int cmd;
struct sockaddr *sa;
{
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struct domain *dp;
struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_ctlinput)
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(*pr->pr_ctlinput)(cmd, sa, NULL);
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}
void
pfctlinput2(cmd, sa, ctlparam)
int cmd;
struct sockaddr *sa;
void *ctlparam;
{
struct domain *dp;
struct protosw *pr;
if (!sa)
return;
for (dp = domains; dp; dp = dp->dom_next) {
/*
* the check must be made by xx_ctlinput() anyways, to
* make sure we use data item pointed to by ctlparam in
* correct way. the following check is made just for safety.
*/
if (dp->dom_family != sa->sa_family)
continue;
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_ctlinput)
(*pr->pr_ctlinput)(cmd, sa, ctlparam);
}
}
void
pfslowtimo(arg)
void *arg;
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{
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struct domain *dp;
struct protosw *pr;
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pfslowtimo_now++;
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for (dp = domains; dp; dp = dp->dom_next)
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_slowtimo)
(*pr->pr_slowtimo)();
callout_reset(&pfslowtimo_ch, hz / 2, pfslowtimo, NULL);
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}
void
pffasttimo(arg)
void *arg;
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{
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struct domain *dp;
struct protosw *pr;
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pffasttimo_now++;
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for (dp = domains; dp; dp = dp->dom_next)
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_fasttimo)
(*pr->pr_fasttimo)();
callout_reset(&pffasttimo_ch, hz / 5, pffasttimo, NULL);
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}