268 lines
7.1 KiB
C
268 lines
7.1 KiB
C
/*
|
|
* 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. 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.
|
|
*
|
|
* @(#)uipc_domain.c 8.2 (Berkeley) 10/18/93
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/domain.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/systm.h>
|
|
#include <vm/uma.h>
|
|
|
|
/*
|
|
* System initialization
|
|
*
|
|
* Note: domain initialization takes place on a per domain basis
|
|
* as a result of traversing a SYSINIT linker set. Most likely,
|
|
* each domain would want to call DOMAIN_SET(9) itself, which
|
|
* would cause the domain to be added just after domaininit()
|
|
* is called during startup.
|
|
*
|
|
* See DOMAIN_SET(9) for details on its use.
|
|
*/
|
|
|
|
static void domaininit(void *);
|
|
SYSINIT(domain, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, domaininit, NULL)
|
|
|
|
static struct callout pffast_callout;
|
|
static struct callout pfslow_callout;
|
|
|
|
static void pffasttimo(void *);
|
|
static void pfslowtimo(void *);
|
|
|
|
struct domain *domains; /* registered protocol domains */
|
|
struct mtx dom_mtx; /* domain list lock */
|
|
MTX_SYSINIT(domain, &dom_mtx, "domain list", MTX_DEF);
|
|
|
|
/*
|
|
* Add a new protocol domain to the list of supported domains
|
|
* Note: you cant unload it again because a socket may be using it.
|
|
* XXX can't fail at this time.
|
|
*/
|
|
static void
|
|
net_init_domain(struct domain *dp)
|
|
{
|
|
struct protosw *pr;
|
|
|
|
if (dp->dom_init)
|
|
(*dp->dom_init)();
|
|
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++){
|
|
if (pr->pr_usrreqs == 0)
|
|
panic("domaininit: %ssw[%d] has no usrreqs!",
|
|
dp->dom_name,
|
|
(int)(pr - dp->dom_protosw));
|
|
if (pr->pr_init)
|
|
(*pr->pr_init)();
|
|
}
|
|
/*
|
|
* update global information about maximums
|
|
*/
|
|
max_hdr = max_linkhdr + max_protohdr;
|
|
max_datalen = MHLEN - max_hdr;
|
|
}
|
|
|
|
/*
|
|
* Add a new protocol domain to the list of supported domains
|
|
* Note: you cant unload it again because a socket may be using it.
|
|
* XXX can't fail at this time.
|
|
*/
|
|
void
|
|
net_add_domain(void *data)
|
|
{
|
|
struct domain *dp;
|
|
|
|
dp = (struct domain *)data;
|
|
mtx_lock(&dom_mtx);
|
|
dp->dom_next = domains;
|
|
domains = dp;
|
|
mtx_unlock(&dom_mtx);
|
|
net_init_domain(dp);
|
|
}
|
|
|
|
/* ARGSUSED*/
|
|
static void
|
|
domaininit(void *dummy)
|
|
{
|
|
/*
|
|
* Before we do any setup, make sure to initialize the
|
|
* zone allocator we get struct sockets from.
|
|
*/
|
|
|
|
socket_zone = uma_zcreate("socket", sizeof(struct socket), NULL, NULL,
|
|
NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
|
|
uma_zone_set_max(socket_zone, maxsockets);
|
|
|
|
if (max_linkhdr < 16) /* XXX */
|
|
max_linkhdr = 16;
|
|
|
|
if (debug_mpsafenet) {
|
|
callout_init(&pffast_callout, CALLOUT_MPSAFE);
|
|
callout_init(&pfslow_callout, CALLOUT_MPSAFE);
|
|
} else {
|
|
callout_init(&pffast_callout, 0);
|
|
callout_init(&pfslow_callout, 0);
|
|
}
|
|
|
|
callout_reset(&pffast_callout, 1, pffasttimo, NULL);
|
|
callout_reset(&pfslow_callout, 1, pfslowtimo, NULL);
|
|
}
|
|
|
|
|
|
struct protosw *
|
|
pffindtype(family, type)
|
|
int family;
|
|
int type;
|
|
{
|
|
register struct domain *dp;
|
|
register struct protosw *pr;
|
|
|
|
for (dp = domains; dp; dp = dp->dom_next)
|
|
if (dp->dom_family == family)
|
|
goto found;
|
|
return (0);
|
|
found:
|
|
for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
|
|
if (pr->pr_type && pr->pr_type == type)
|
|
return (pr);
|
|
return (0);
|
|
}
|
|
|
|
struct protosw *
|
|
pffindproto(family, protocol, type)
|
|
int family;
|
|
int protocol;
|
|
int type;
|
|
{
|
|
register struct domain *dp;
|
|
register struct protosw *pr;
|
|
struct protosw *maybe = 0;
|
|
|
|
if (family == 0)
|
|
return (0);
|
|
for (dp = domains; dp; dp = dp->dom_next)
|
|
if (dp->dom_family == family)
|
|
goto found;
|
|
return (0);
|
|
found:
|
|
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 == (struct protosw *)0)
|
|
maybe = pr;
|
|
}
|
|
return (maybe);
|
|
}
|
|
|
|
void
|
|
pfctlinput(cmd, sa)
|
|
int cmd;
|
|
struct sockaddr *sa;
|
|
{
|
|
register struct domain *dp;
|
|
register 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, (void *)0);
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
static void
|
|
pfslowtimo(arg)
|
|
void *arg;
|
|
{
|
|
register struct domain *dp;
|
|
register struct protosw *pr;
|
|
|
|
NET_ASSERT_GIANT();
|
|
|
|
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(&pfslow_callout, hz/2, pfslowtimo, NULL);
|
|
}
|
|
|
|
static void
|
|
pffasttimo(arg)
|
|
void *arg;
|
|
{
|
|
register struct domain *dp;
|
|
register struct protosw *pr;
|
|
|
|
NET_ASSERT_GIANT();
|
|
|
|
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(&pffast_callout, hz/5, pffasttimo, NULL);
|
|
}
|