/* $OpenBSD: uipc_domain.c,v 1.51 2017/05/27 08:02:40 claudio 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 #include #include #include #include #include #include #include #include #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 (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 #ifdef MPLS if (family == PF_MPLS) return (mpls_sysctl(name + 1, namelen - 1, oldp, oldlenp, newp, newlen)); #endif dp = pffinddomain(family); if (dp == NULL) return (ENOPROTOOPT); 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; NET_ASSERT_LOCKED(); 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); } } 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); }