247 lines
6.6 KiB
C
247 lines
6.6 KiB
C
/*
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)uipc_domain.c 8.2 (Berkeley) 10/18/93
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* $Id: uipc_domain.c,v 1.17 1997/04/27 20:00:42 wollman Exp $
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/protosw.h>
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#include <sys/domain.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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/*
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* System initialization
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*
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* Note: domain initialization wants to take place on a per domain basis
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* as a result of traversing a linker set. Most likely, each domain
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* want to call a registration function rather than being handled here
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* in domaininit(). Probably this will look like:
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*
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* SYSINIT(unique, SI_SUB_PROTO_DOMAI, SI_ORDER_ANY, domain_add, xxx)
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*
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* Where 'xxx' is replaced by the address of a parameter struct to be
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* passed to the doamin_add() function.
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*/
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static int x_save_spl; /* used by kludge*/
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static void kludge_splimp __P((void *));
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static void kludge_splx __P((void *));
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static void domaininit __P((void *));
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SYSINIT(splimp, SI_SUB_PROTO_BEGIN, SI_ORDER_FIRST, kludge_splimp, &x_save_spl)
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SYSINIT(domain, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST, domaininit, NULL)
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SYSINIT(splx, SI_SUB_PROTO_END, SI_ORDER_FIRST, kludge_splx, &x_save_spl)
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static void pffasttimo __P((void *));
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static void pfslowtimo __P((void *));
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struct domain *domains;
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#define ADDDOMAIN(x) { \
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__CONCAT(x,domain.dom_next) = domains; \
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domains = &__CONCAT(x,domain); \
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}
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extern struct linker_set domain_set;
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/* ARGSUSED*/
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static void
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domaininit(dummy)
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void *dummy;
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{
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register struct domain *dp, **dpp;
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register struct protosw *pr;
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/*
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* NB - local domain is always present.
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*/
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ADDDOMAIN(local);
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for (dpp = (struct domain **)domain_set.ls_items; *dpp; dpp++) {
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(**dpp).dom_next = domains;
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domains = *dpp;
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}
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/* - not in our sources
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#ifdef ISDN
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ADDDOMAIN(isdn);
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#endif
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*/
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for (dp = domains; dp; dp = dp->dom_next) {
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if (dp->dom_init)
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(*dp->dom_init)();
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++){
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#ifdef PRU_OLDSTYLE
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/* See comments in uipc_socket2.c. */
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if (pr->pr_usrreqs == 0 && pr->pr_ousrreq)
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pr->pr_usrreqs = &pru_oldstyle;
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#else
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if (pr->pr_usrreqs == 0)
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panic("domaininit: %ssw[%d] has no usrreqs!",
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dp->dom_name,
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(int)(pr - dp->dom_protosw));
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#endif
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if (pr->pr_init)
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(*pr->pr_init)();
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}
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}
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if (max_linkhdr < 16) /* XXX */
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max_linkhdr = 16;
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max_hdr = max_linkhdr + max_protohdr;
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max_datalen = MHLEN - max_hdr;
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timeout(pffasttimo, (void *)0, 1);
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timeout(pfslowtimo, (void *)0, 1);
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}
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/*
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* The following two operations are kludge code. Most likely, they should
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* be done as a "domainpreinit()" for the first function and then rolled
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* in as the last act of "domaininit()" for the second.
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*
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* In point of fact, it is questionable why other initialization prior
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* to this does not also take place at splimp by default.
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*/
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static void
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kludge_splimp(udata)
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void *udata;
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{
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int *savesplp = udata;
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*savesplp = splimp();
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}
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static void
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kludge_splx(udata)
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void *udata;
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{
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int *savesplp = udata;
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splx( *savesplp);
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}
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struct protosw *
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pffindtype(family, type)
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int family;
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int type;
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{
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register struct domain *dp;
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register struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
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if (dp->dom_family == family)
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goto found;
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return (0);
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found:
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_type && pr->pr_type == type)
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return (pr);
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return (0);
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}
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struct protosw *
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pffindproto(family, protocol, type)
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int family;
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int protocol;
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int type;
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{
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register struct domain *dp;
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register struct protosw *pr;
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struct protosw *maybe = 0;
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if (family == 0)
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return (0);
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for (dp = domains; dp; dp = dp->dom_next)
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if (dp->dom_family == family)
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goto found;
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return (0);
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found:
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++) {
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if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
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return (pr);
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if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
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pr->pr_protocol == 0 && maybe == (struct protosw *)0)
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maybe = pr;
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}
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return (maybe);
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}
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void
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pfctlinput(cmd, sa)
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int cmd;
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struct sockaddr *sa;
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{
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register struct domain *dp;
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register struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_ctlinput)
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(*pr->pr_ctlinput)(cmd, sa, (void *)0);
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}
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static void
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pfslowtimo(arg)
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void *arg;
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{
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register struct domain *dp;
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register struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_slowtimo)
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(*pr->pr_slowtimo)();
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timeout(pfslowtimo, (void *)0, hz/2);
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}
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static void
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pffasttimo(arg)
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void *arg;
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{
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register struct domain *dp;
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register struct protosw *pr;
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for (dp = domains; dp; dp = dp->dom_next)
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_fasttimo)
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(*pr->pr_fasttimo)();
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timeout(pffasttimo, (void *)0, hz/5);
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}
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