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
83 void
tun_configure(struct bundle * bundle)84 tun_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