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/* $OpenBSD: uipc_domain.c,v 1.48 2016/12/20 21:15:36 mpi Exp $ */
/* $NetBSD: uipc_domain.c,v 1.14 1996/02/09 19:00:44 christos 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 8.2 (Berkeley) 10/18/93
*/
#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/systm.h>
#include <sys/sysctl.h>
#include <sys/timeout.h>
#include "bpfilter.h"
#include "pflow.h"
extern struct domain mplsdomain;
extern struct domain pfkeydomain;
extern struct domain inet6domain;
extern struct domain inetdomain;
extern struct domain unixdomain;
extern struct domain routedomain;
struct domain *domains[] = {
#ifdef MPLS
&mplsdomain,
#endif
#if defined (KEY) || defined (IPSEC) || defined (TCP_SIGNATURE)
&pfkeydomain,
#endif
#ifdef INET6
&inet6domain,
#endif /* INET6 */
&inetdomain,
&unixdomain,
&routedomain,
NULL
};
void pffasttimo(void *);
void pfslowtimo(void *);
struct domain * pffinddomain(int);
void
domaininit(void)
{
struct domain *dp;
struct protosw *pr;
static struct timeout pffast_timeout;
static struct timeout pfslow_timeout;
int i;
for (i = 0; (dp = domains[i]) != NULL; i++) {
if (dp->dom_init)
(*dp->dom_init)();
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_init)
(*pr->pr_init)();
}
/*
* max_linkhdr of 64 was chosen to encompass tunnelling
* traffic in IP payloads, eg, by etherip(4) or gif(4),
* without needing to prepend an mbuf to fit those
* headers.
*/
if (max_linkhdr < 64)
max_linkhdr = 64;
max_hdr = max_linkhdr + max_protohdr;
timeout_set_proc(&pffast_timeout, pffasttimo, &pffast_timeout);
timeout_set_proc(&pfslow_timeout, pfslowtimo, &pfslow_timeout);
timeout_add(&pffast_timeout, 1);
timeout_add(&pfslow_timeout, 1);
}
struct domain *
pffinddomain(int family)
{
struct domain *dp;
int i;
for (i = 0; (dp = domains[i]) != NULL; i++) {
if (dp->dom_family == family)
return (dp);
}
return (NULL);
}
struct protosw *
pffindtype(int family, int type)
{
struct domain *dp;
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);
}
struct protosw *
pffindproto(int family, int protocol, int type)
{
struct domain *dp;
struct protosw *pr;
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);
}
int
net_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen, struct proc *p)
{
struct domain *dp;
struct protosw *pr;
int s, error, family, protocol;
/*
* All sysctl names at this level are nonterminal.
* Usually: next two components are protocol family and protocol
* number, then at least one addition component.
*/
if (namelen < 2)
return (EISDIR); /* overloaded */
family = name[0];
if (family == 0)
return (0);
#if NBPFILTER > 0
if (family == PF_BPF)
return (bpf_sysctl(name + 1, namelen - 1, oldp, oldlenp,
newp, newlen));
#endif
#if NPFLOW > 0
if (family == PF_PFLOW)
return (pflow_sysctl(name + 1, namelen - 1, oldp, oldlenp,
newp, newlen));
#endif
#ifdef PIPEX
if (family == PF_PIPEX)
return (pipex_sysctl(name + 1, namelen - 1, oldp, oldlenp,
newp, newlen));
#endif
dp = pffinddomain(family);
if (dp == NULL)
return (ENOPROTOOPT);
#ifdef MPLS
/* XXX WARNING: big fat ugly hack */
/* stupid net.mpls is special as it does not have a protocol */
if (family == PF_MPLS) {
NET_LOCK(s);
error = (dp->dom_protosw[0].pr_sysctl)(name + 1, namelen - 1,
oldp, oldlenp, newp, newlen);
NET_UNLOCK(s);
return (error);
}
#endif
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) {
NET_LOCK(s);
error = (*pr->pr_sysctl)(name + 2, namelen - 2,
oldp, oldlenp, newp, newlen);
NET_UNLOCK(s);
return (error);
}
return (ENOPROTOOPT);
}
void
pfctlinput(int cmd, struct sockaddr *sa)
{
struct domain *dp;
struct protosw *pr;
int i, s;
s = splsoftnet();
for (i = 0; (dp = domains[i]) != NULL; i++) {
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_ctlinput)
(*pr->pr_ctlinput)(cmd, sa, 0, NULL);
}
splx(s);
}
void
pfslowtimo(void *arg)
{
struct timeout *to = (struct timeout *)arg;
struct domain *dp;
struct protosw *pr;
int i, s;
NET_LOCK(s);
for (i = 0; (dp = domains[i]) != NULL; i++) {
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_slowtimo)
(*pr->pr_slowtimo)();
}
NET_UNLOCK(s);
timeout_add_msec(to, 500);
}
void
pffasttimo(void *arg)
{
struct timeout *to = (struct timeout *)arg;
struct domain *dp;
struct protosw *pr;
int i, s;
NET_LOCK(s);
for (i = 0; (dp = domains[i]) != NULL; i++) {
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
if (pr->pr_fasttimo)
(*pr->pr_fasttimo)();
}
NET_UNLOCK(s);
timeout_add_msec(to, 200);
}
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