300 lines
7.0 KiB
C
300 lines
7.0 KiB
C
/* $NetBSD: uipc_domain.c,v 1.46 2004/03/24 15:34:53 atatat Exp $ */
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/*
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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. 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 8.3 (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 1.46 2004/03/24 15:34:53 atatat Exp $");
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#include "opt_inet.h"
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#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_mbuftrace.h"
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#include "opt_natm.h"
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#include "arp.h"
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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/time.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/callout.h>
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#include <sys/proc.h>
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#include <sys/sysctl.h>
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void pffasttimo(void *);
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void pfslowtimo(void *);
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struct domain *domains;
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struct callout pffasttimo_ch, pfslowtimo_ch;
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/*
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* Current time values for fast and slow timeouts. We can use u_int
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* relatively safely. The fast timer will roll over in 27 years and
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* the slow timer in 68 years.
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*/
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u_int pfslowtimo_now;
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u_int pffasttimo_now;
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#define ADDDOMAIN(x) { \
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extern struct domain __CONCAT(x,domain); \
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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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void
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domaininit()
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{
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struct domain *dp;
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struct protosw *pr;
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#undef unix
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/*
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* KAME NOTE: ADDDOMAIN(route) is moved to the last part so that
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* it will be initialized as the *first* element. confusing!
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*/
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#ifndef lint
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ADDDOMAIN(unix);
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#ifdef INET
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ADDDOMAIN(inet);
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#endif
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#ifdef INET6
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ADDDOMAIN(inet6);
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#endif
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#ifdef NS
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ADDDOMAIN(ns);
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#endif
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#ifdef ISO
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ADDDOMAIN(iso);
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#endif
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#ifdef CCITT
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ADDDOMAIN(ccitt);
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#endif
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#ifdef NATM
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ADDDOMAIN(natm);
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#endif
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#ifdef NETATALK
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ADDDOMAIN(atalk);
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#endif
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#if defined(IPSEC) || defined(FAST_IPSEC)
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ADDDOMAIN(key);
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#endif
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#ifdef INET
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#if NARP > 0
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ADDDOMAIN(arp);
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#endif
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#endif
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ADDDOMAIN(route);
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#endif /* ! lint */
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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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#ifdef MBUFTRACE
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if (dp->dom_mowner.mo_name[0] == '\0') {
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strncpy(dp->dom_mowner.mo_name, dp->dom_name,
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sizeof(dp->dom_mowner.mo_name));
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MOWNER_ATTACH(&dp->dom_mowner);
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}
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#endif
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for (pr = dp->dom_protosw; pr < dp->dom_protoswNPROTOSW; pr++)
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if (pr->pr_init)
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(*pr->pr_init)();
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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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callout_init(&pffasttimo_ch);
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callout_init(&pfslowtimo_ch);
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callout_reset(&pffasttimo_ch, 1, pffasttimo, NULL);
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callout_reset(&pfslowtimo_ch, 1, pfslowtimo, NULL);
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}
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struct domain *
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pffinddomain(family)
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int family;
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{
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struct domain *dp;
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for (dp = domains; dp != NULL; dp = dp->dom_next)
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if (dp->dom_family == family)
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return (dp);
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return (NULL);
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}
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struct protosw *
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pffindtype(family, type)
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int family, type;
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{
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struct domain *dp;
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struct protosw *pr;
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dp = pffinddomain(family);
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if (dp == NULL)
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return (NULL);
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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 (NULL);
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}
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struct protosw *
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pffindproto(family, protocol, type)
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int family, protocol, type;
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{
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struct domain *dp;
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struct protosw *pr;
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struct protosw *maybe = NULL;
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if (family == 0)
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return (NULL);
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dp = pffinddomain(family);
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if (dp == NULL)
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return (NULL);
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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 == NULL)
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maybe = pr;
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}
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return (maybe);
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}
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SYSCTL_SETUP(sysctl_net_setup, "sysctl net subtree setup")
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{
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sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, "net", NULL,
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NULL, 0, NULL, 0,
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CTL_NET, CTL_EOL);
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sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, "local", NULL,
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NULL, 0, NULL, 0,
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CTL_NET, PF_LOCAL, CTL_EOL);
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/*
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* other protocols are expected to have their own setup
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* routines that will do everything. we end up not having
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* anything at all to do.
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*/
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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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struct domain *dp;
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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, NULL);
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}
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void
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pfctlinput2(cmd, sa, ctlparam)
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int cmd;
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struct sockaddr *sa;
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void *ctlparam;
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{
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struct domain *dp;
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struct protosw *pr;
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if (!sa)
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return;
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for (dp = domains; dp; dp = dp->dom_next) {
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/*
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* the check must be made by xx_ctlinput() anyways, to
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* make sure we use data item pointed to by ctlparam in
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* correct way. the following check is made just for safety.
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*/
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if (dp->dom_family != sa->sa_family)
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continue;
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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, ctlparam);
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}
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}
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void
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pfslowtimo(arg)
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void *arg;
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{
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struct domain *dp;
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struct protosw *pr;
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pfslowtimo_now++;
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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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callout_reset(&pfslowtimo_ch, hz / 2, pfslowtimo, NULL);
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}
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void
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pffasttimo(arg)
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void *arg;
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{
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struct domain *dp;
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struct protosw *pr;
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pffasttimo_now++;
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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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callout_reset(&pffasttimo_ch, hz / 5, pffasttimo, NULL);
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}
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