+++ /dev/null
-/*
- * Copyright (c) 2000-2008 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-/*
- * 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.
- *
- * From: @(#)if_loop.c 8.1 (Berkeley) 6/10/93
- * $FreeBSD: src/sys/net/if_disc.c,v 1.26.2.1 2001/03/06 00:32:09 obrien Exp $
- */
-
-/*
- * Discard interface driver for protocol testing and timing.
- * (Based on the loopback.)
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/mbuf.h>
-#include <sys/socket.h>
-#include <sys/sockio.h>
-
-#include <net/if.h>
-#include <net/if_types.h>
-#include <net/route.h>
-#include <net/bpf.h>
-
-#ifdef TINY_DSMTU
-#define DSMTU (1024+512)
-#else
-#define DSMTU 65532
-#endif
-
-static void discattach(void);
-
-static struct ifnet discif;
-static int discoutput(struct ifnet *, struct mbuf *, struct sockaddr *,
- struct rtentry *);
-static void discrtrequest(int cmd, struct rtentry *rt, struct sockaddr *sa);
-static int discioctl(struct ifnet *, u_long, caddr_t);
-
-/* ARGSUSED */
-static void
-discattach()
-{
- register struct ifnet *ifp = &discif;
-
- ifp->if_name = "ds";
- ifp->if_family = APPLE_IF_FAM_DISC;
- ifp->if_mtu = DSMTU;
- ifp->if_flags = IFF_LOOPBACK | IFF_MULTICAST;
- ifp->if_ioctl = discioctl;
- ifp->if_output = discoutput;
- ifp->if_type = IFT_LOOP;
- ifp->if_hdrlen = 0;
- ifp->if_addrlen = 0;
- if_attach(ifp);
- bpfattach(ifp, DLT_NULL, sizeof(u_int));
-}
-
-#ifndef __APPLE__
-static int
-disc_modevent(module_t mod, int type, void *data)
-{
- switch (type) {
- case MOD_LOAD:
- discattach();
- break;
- case MOD_UNLOAD:
- printf("if_disc module unload - not possible for this module type\n");
- return EINVAL;
- }
- return 0;
-}
-
-static moduledata_t disc_mod = {
- "if_disc",
- disc_modevent,
- NULL
-};
-
-DECLARE_MODULE(if_disc, disc_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
-#endif
-
-static int
-discoutput(ifp, m, dst, rt)
- struct ifnet *ifp;
- register struct mbuf *m;
- struct sockaddr *dst;
- register struct rtentry *rt;
-{
- if ((m->m_flags & M_PKTHDR) == 0)
- panic("discoutput no HDR");
- /* BPF write needs to be handled specially */
- if (dst->sa_family == AF_UNSPEC) {
- dst->sa_family = *(mtod(m, int *));
- m->m_len -= sizeof(int);
- m->m_pkthdr.len -= sizeof(int);
- m->m_data += sizeof(int);
- }
-
- if (discif.if_bpf) {
- /* We need to prepend the address family as a four byte field. */
- u_int af = dst->sa_family;
-
- bpf_tap_out(ifp, 0, m, &af, sizeof(af));
- }
- m->m_pkthdr.rcvif = ifp;
-
- ifp->if_opackets++;
- ifp->if_obytes += m->m_pkthdr.len;
-
- m_freem(m);
- return 0;
-}
-
-/* ARGSUSED */
-static void
-discrtrequest(cmd, rt, sa)
- int cmd;
- struct rtentry *rt;
- struct sockaddr *sa;
-{
- if (rt != NULL) {
- RT_LOCK_ASSERT_HELD(rt);
- rt->rt_rmx.rmx_mtu = DSMTU;
- }
-}
-
-/*
- * Process an ioctl request.
- */
-/* ARGSUSED */
-static int
-discioctl(ifp, cmd, data)
- register struct ifnet *ifp;
- u_long cmd;
- caddr_t data;
-{
- register struct ifaddr *ifa;
- register struct ifreq *ifr = (struct ifreq *)data;
- register int error = 0;
-
- switch (cmd) {
-
- case SIOCSIFADDR:
- ifnet_set_flags(ifp, IFF_UP, IFF_UP);
- ifa = (struct ifaddr *)data;
- if (ifa != 0)
- ifa->ifa_rtrequest = discrtrequest;
- /*
- * Everything else is done at a higher level.
- */
- break;
-
- case SIOCADDMULTI:
- case SIOCDELMULTI:
- if (ifr == 0) {
- error = EAFNOSUPPORT; /* XXX */
- break;
- }
- switch (ifr->ifr_addr.sa_family) {
-
-#if INET
- case AF_INET:
- break;
-#endif
-#if INET6
- case AF_INET6:
- break;
-#endif
-
- default:
- error = EAFNOSUPPORT;
- break;
- }
- break;
-
- case SIOCSIFMTU:
- ifp->if_mtu = ifr->ifr_mtu;
- break;
-
- default:
- error = EINVAL;
- }
- return (error);
-}
projects / apple / xnu.git / blobdiff