1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/param.h>
30
31#include <sys/socket.h>		/* For IFF_ defines */
32#ifndef __FreeBSD__
33#include <net/if.h>		/* For IFF_ defines */
34#endif
35#include <net/route.h>
36#include <netinet/in.h>
37#include <net/if_types.h>
38#include <net/if_tun.h>
39#include <netinet/in_systm.h>
40#include <netinet/ip.h>
41#include <sys/un.h>
42
43#include <errno.h>
44#include <string.h>
45#if defined(__OpenBSD__) || defined(__NetBSD__)
46#include <sys/ioctl.h>
47#endif
48#include <stdio.h>
49#include <termios.h>
50#ifdef __NetBSD__
51#include <unistd.h>
52#endif
53
54#include "layer.h"
55#include "mbuf.h"
56#include "log.h"
57#include "id.h"
58#include "timer.h"
59#include "lqr.h"
60#include "hdlc.h"
61#include "defs.h"
62#include "fsm.h"
63#include "throughput.h"
64#include "iplist.h"
65#include "slcompress.h"
66#include "ncpaddr.h"
67#include "ipcp.h"
68#include "filter.h"
69#include "descriptor.h"
70#include "lcp.h"
71#include "ccp.h"
72#include "link.h"
73#include "mp.h"
74#include "iface.h"
75#ifndef NORADIUS
76#include "radius.h"
77#endif
78#include "ipv6cp.h"
79#include "ncp.h"
80#include "bundle.h"
81#include "tun.h"
82
83void
84tun_configure(struct bundle *bundle)
85{
86#ifdef __NetBSD__
87  struct ifreq ifr;
88  int s;
89
90  s = socket(PF_INET, SOCK_DGRAM, 0);
91
92  if (s < 0) {
93    log_Printf(LogERROR, "tun_configure: socket(): %s\n", strerror(errno));
94    return;
95  }
96
97  sprintf(ifr.ifr_name, "tun%d", bundle->unit);
98  ifr.ifr_mtu = bundle->iface->mtu;
99  if (ioctl(s, SIOCSIFMTU, &ifr) < 0)
100      log_Printf(LogERROR, "tun_configure: ioctl(SIOCSIFMTU): %s\n",
101             strerror(errno));
102
103  close(s);
104#else
105  struct tuninfo info;
106
107  memset(&info, '\0', sizeof info);
108  info.type = IFT_PPP;
109  info.mtu = bundle->iface->mtu;
110
111  info.baudrate = bundle->bandwidth;
112#ifdef __OpenBSD__
113  info.flags = IFF_UP|IFF_POINTOPOINT|IFF_MULTICAST;
114#endif
115  if (ID0ioctl(bundle->dev.fd, TUNSIFINFO, &info) < 0)
116    log_Printf(LogERROR, "tun_configure: ioctl(TUNSIFINFO): %s\n",
117	      strerror(errno));
118#endif
119}
120