tun.c revision 78410
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 78410 2001-06-18 14:59:36Z brian $ 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 "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#include "iface.h" 74#ifndef NORADIUS 75#include "radius.h" 76#endif 77#include "bundle.h" 78#include "tun.h" 79 80void 81tun_configure(struct bundle *bundle) 82{ 83#ifdef __NetBSD__ 84 struct ifreq ifr; 85 int s; 86 87 s = socket(AF_INET, SOCK_DGRAM, 0); 88 89 if (s < 0) { 90 log_Printf(LogERROR, "tun_configure: socket(): %s\n", strerror(errno)); 91 return; 92 } 93 94 sprintf(ifr.ifr_name, "tun%d", bundle->unit); 95 ifr.ifr_mtu = bundle->iface->mtu; 96 if (ioctl(s, SIOCSIFMTU, &ifr) < 0) 97 log_Printf(LogERROR, "tun_configure: ioctl(SIOCSIFMTU): %s\n", 98 strerror(errno)); 99 100 close(s); 101#else 102 struct tuninfo info; 103 104 memset(&info, '\0', sizeof info); 105 info.type = IFT_PPP; 106 info.mtu = bundle->iface->mtu; 107 108 info.baudrate = bundle->bandwidth; 109#ifdef __OpenBSD__ 110 info.flags = IFF_UP|IFF_POINTOPOINT; 111#endif 112 if (ID0ioctl(bundle->dev.fd, TUNSIFINFO, &info) < 0) 113 log_Printf(LogERROR, "tun_configure: ioctl(TUNSIFINFO): %s\n", 114 strerror(errno)); 115#endif 116} 117