NetBSD/sys/kern/uipc_domain.c

301 lines
7.1 KiB
C

/* $NetBSD: uipc_domain.c,v 1.48 2004/05/25 04:33:59 atatat Exp $ */
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* 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. 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.
*
* @(#)uipc_domain.c 8.3 (Berkeley) 2/14/95
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uipc_domain.c,v 1.48 2004/05/25 04:33:59 atatat Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
#include "opt_atalk.h"
#include "opt_ccitt.h"
#include "opt_iso.h"
#include "opt_ns.h"
#include "opt_mbuftrace.h"
#include "opt_natm.h"
#include "arp.h"
#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>
#include <sys/proc.h>
#include <sys/sysctl.h>
void pffasttimo(void *);
void pfslowtimo(void *);
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;
#define ADDDOMAIN(x) { \
extern struct domain __CONCAT(x,domain); \
__CONCAT(x,domain.dom_next) = domains; \
domains = &__CONCAT(x,domain); \
}
void
domaininit()
{
struct domain *dp;
const struct protosw *pr;
#undef unix
/*
* KAME NOTE: ADDDOMAIN(route) is moved to the last part so that
* it will be initialized as the *first* element. confusing!
*/
#ifndef lint
ADDDOMAIN(unix);
#ifdef INET
ADDDOMAIN(inet);
#endif
#ifdef INET6
ADDDOMAIN(inet6);
#endif
#ifdef NS
ADDDOMAIN(ns);
#endif
#ifdef ISO
ADDDOMAIN(iso);
#endif
#ifdef CCITT
ADDDOMAIN(ccitt);
#endif
#ifdef NATM
ADDDOMAIN(natm);
#endif
#ifdef NETATALK
ADDDOMAIN(atalk);
#endif
#if defined(IPSEC) || defined(FAST_IPSEC)
ADDDOMAIN(key);
#endif
#ifdef INET
#if NARP > 0
ADDDOMAIN(arp);
#endif
#endif
ADDDOMAIN(route);
#endif /* ! lint */
for (dp = domains; dp; dp = dp->dom_next) {
if (dp->dom_init)
(*dp->dom_init)();
#ifdef MBUFTRACE
if (dp->dom_mowner.mo_name[0] == '\0') {
strncpy(dp->dom_mowner.mo_name, dp->dom_name,
sizeof(dp->dom_mowner.mo_name));
MOWNER_ATTACH(&dp->dom_mowner);
}
#endif
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_init)
(*pr->pr_init)();
}
if (max_linkhdr < 16) /* XXX */
max_linkhdr = 16;
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);
}
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);
}
const struct protosw *
pffindtype(family, type)
int family, type;
{
struct domain *dp;
const struct protosw *pr;
dp = pffinddomain(family);
if (dp == NULL)
return (NULL);
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_type && pr->pr_type == type)
return (pr);
return (NULL);
}
const struct protosw *
pffindproto(family, protocol, type)
int family, protocol, type;
{
struct domain *dp;
const struct protosw *pr;
const struct protosw *maybe = NULL;
if (family == 0)
return (NULL);
dp = pffinddomain(family);
if (dp == NULL)
return (NULL);
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)
maybe = pr;
}
return (maybe);
}
SYSCTL_SETUP(sysctl_net_setup, "sysctl net subtree setup")
{
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "net", NULL,
NULL, 0, NULL, 0,
CTL_NET, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "local",
SYSCTL_DESCR("PF_LOCAL related settings"),
NULL, 0, NULL, 0,
CTL_NET, PF_LOCAL, CTL_EOL);
/*
* other protocols are expected to have their own setup
* routines that will do everything. we end up not having
* anything at all to do.
*/
}
void
pfctlinput(cmd, sa)
int cmd;
struct sockaddr *sa;
{
struct domain *dp;
const struct protosw *pr;
for (dp = domains; dp; dp = dp->dom_next)
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_ctlinput)
(*pr->pr_ctlinput)(cmd, sa, NULL);
}
void
pfctlinput2(cmd, sa, ctlparam)
int cmd;
struct sockaddr *sa;
void *ctlparam;
{
struct domain *dp;
const 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;
{
struct domain *dp;
const struct protosw *pr;
pfslowtimo_now++;
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);
}
void
pffasttimo(arg)
void *arg;
{
struct domain *dp;
const struct protosw *pr;
pffasttimo_now++;
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);
}