tun.c revision 51449
1/*- 2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/usr.sbin/ppp/tun.c 51449 1999-09-20 07:36:46Z brian $ 27 */ 28 29#include <sys/param.h> 30#ifndef __FreeBSD__ 31#include <sys/socket.h> /* For IFF_ defines */ 32#include <net/if.h> /* For IFF_ defines */ 33#endif 34#include <netinet/in.h> 35#include <net/if_types.h> 36#include <net/if_tun.h> 37#include <netinet/in_systm.h> 38#include <netinet/ip.h> 39#include <sys/un.h> 40 41#include <errno.h> 42#ifdef __NetBSD__ 43#include <signal.h> /* for `errno' ?!? */ 44#endif 45#include <string.h> 46#if defined(__OpenBSD__) || defined(__NetBSD__) 47#include <sys/ioctl.h> 48#endif 49#include <termios.h> 50#ifdef __NetBSD__ 51#include <stdio.h> 52#include <unistd.h> 53#endif 54 55#include "layer.h" 56#include "mbuf.h" 57#include "log.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 "ipcp.h" 67#include "filter.h" 68#include "descriptor.h" 69#include "lcp.h" 70#include "ccp.h" 71#include "link.h" 72#include "mp.h" 73#ifndef NORADIUS 74#include "radius.h" 75#endif 76#include "bundle.h" 77#include "tun.h" 78 79void 80tun_configure(struct bundle *bundle, int mtu) 81{ 82#ifdef __NetBSD__ 83 struct ifreq ifr; 84 int s; 85 86 s = socket(AF_INET, SOCK_DGRAM, 0); 87 88 if (s < 0) { 89 log_Printf(LogERROR, "tun_configure: socket(): %s\n", strerror(errno)); 90 return; 91 } 92 93 sprintf(ifr.ifr_name, "tun%d", bundle->unit); 94 ifr.ifr_mtu = mtu; 95 if (ioctl(s, SIOCSIFMTU, &ifr) < 0) 96 log_Printf(LogERROR, "tun_configure: ioctl(SIOCSIFMTU): %s\n", 97 strerror(errno)); 98 99 close(s); 100#else 101 struct tuninfo info; 102 103 memset(&info, '\0', sizeof info); 104 info.type = IFT_PPP; 105 info.mtu = mtu; 106 107 info.baudrate = bundle->bandwidth; 108#ifdef __OpenBSD__ 109 info.flags = IFF_UP|IFF_POINTOPOINT; 110#endif 111 if (ioctl(bundle->dev.fd, TUNSIFINFO, &info) < 0) 112 log_Printf(LogERROR, "tun_configure: ioctl(TUNSIFINFO): %s\n", 113 strerror(errno)); 114#endif 115} 116