+++ /dev/null
-/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 1984, 1985, 1986, 1987, 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.
- *
- * @(#)ns_output.c 8.1 (Berkeley) 6/10/93
- */
-
-#include <sys/param.h>
-#include <sys/malloc.h>
-#include <sys/mbuf.h>
-#include <sys/errno.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
-
-#include <net/if.h>
-#include <net/route.h>
-
-#include <netns/ns.h>
-#include <netns/ns_if.h>
-#include <netns/idp.h>
-#include <netns/idp_var.h>
-
-#ifdef vax
-#include <machine/mtpr.h>
-#endif
-int ns_hold_output = 0;
-int ns_copy_output = 0;
-int ns_output_cnt = 0;
-struct mbuf *ns_lastout;
-
-ns_output(m0, ro, flags)
- struct mbuf *m0;
- struct route *ro;
- int flags;
-{
- register struct idp *idp = mtod(m0, struct idp *);
- register struct ifnet *ifp = 0;
- int error = 0;
- struct route idproute;
- struct sockaddr_ns *dst;
- extern int idpcksum;
-
- if (ns_hold_output) {
- if (ns_lastout) {
- (void)m_free(ns_lastout);
- }
- ns_lastout = m_copy(m0, 0, (int)M_COPYALL);
- }
- /*
- * Route packet.
- */
- if (ro == 0) {
- ro = &idproute;
- bzero((caddr_t)ro, sizeof (*ro));
- }
- dst = (struct sockaddr_ns *)&ro->ro_dst;
- if (ro->ro_rt == 0) {
- dst->sns_family = AF_NS;
- dst->sns_len = sizeof (*dst);
- dst->sns_addr = idp->idp_dna;
- dst->sns_addr.x_port = 0;
- /*
- * If routing to interface only,
- * short circuit routing lookup.
- */
- if (flags & NS_ROUTETOIF) {
- struct ns_ifaddr *ia = ns_iaonnetof(&idp->idp_dna);
-
- if (ia == 0) {
- error = ENETUNREACH;
- goto bad;
- }
- ifp = ia->ia_ifp;
- goto gotif;
- }
- rtalloc(ro);
- } else if ((ro->ro_rt->rt_flags & RTF_UP) == 0) {
- /*
- * The old route has gone away; try for a new one.
- */
- rtfree(ro->ro_rt);
- ro->ro_rt = NULL;
- rtalloc(ro);
- }
- if (ro->ro_rt == 0 || (ifp = ro->ro_rt->rt_ifp) == 0) {
- error = ENETUNREACH;
- goto bad;
- }
- ro->ro_rt->rt_use++;
- if (ro->ro_rt->rt_flags & (RTF_GATEWAY|RTF_HOST))
- dst = (struct sockaddr_ns *)ro->ro_rt->rt_gateway;
-gotif:
-
- /*
- * Look for multicast addresses and
- * and verify user is allowed to send
- * such a packet.
- */
- if (dst->sns_addr.x_host.c_host[0]&1) {
- if ((ifp->if_flags & IFF_BROADCAST) == 0) {
- error = EADDRNOTAVAIL;
- goto bad;
- }
- if ((flags & NS_ALLOWBROADCAST) == 0) {
- error = EACCES;
- goto bad;
- }
- }
-
- if (htons(idp->idp_len) <= ifp->if_mtu) {
- ns_output_cnt++;
- if (ns_copy_output) {
- ns_watch_output(m0, ifp);
- }
- error = (*ifp->if_output)(ifp, m0,
- (struct sockaddr *)dst, ro->ro_rt);
- goto done;
- } else error = EMSGSIZE;
-
-
-bad:
- if (ns_copy_output) {
- ns_watch_output(m0, ifp);
- }
- m_freem(m0);
-done:
- if (ro == &idproute && (flags & NS_ROUTETOIF) == 0 && ro->ro_rt) {
- RTFREE(ro->ro_rt);
- ro->ro_rt = 0;
- }
- return (error);
-}
projects / apple / xnu.git / blobdiff