X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Flinux%2Fdevice.c;h=caee25487c4206b0a3395629be525f25f72dfb41;hp=c5c8bcd4eec20ab815ad9f0d2dc618811e5b0831;hb=00ddbf5723511d80fbd2522fc503bd409dc6189a;hpb=451800eda87e886021fabd1888e486c51e97902a diff --git a/src/linux/device.c b/src/linux/device.c index c5c8bcd4..caee2548 100644 --- a/src/linux/device.c +++ b/src/linux/device.c @@ -1,7 +1,7 @@ /* device.c -- Interaction with Linux ethertap and tun/tap device - Copyright (C) 2001-2002 Ivo Timmermans , - 2001-2002 Guus Sliepen + Copyright (C) 2001-2003 Ivo Timmermans , + 2001-2003 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,21 +17,10 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: device.c,v 1.1.2.14 2003/06/11 19:09:52 guus Exp $ + $Id: device.c,v 1.1.2.19 2003/07/18 13:41:36 guus Exp $ */ -#include "config.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include +#include "system.h" #ifdef HAVE_TUNTAP #ifdef LINUX_IF_TUN_H @@ -44,13 +33,11 @@ #define DEFAULT_DEVICE "/dev/tap0" #endif -#include #include "conf.h" +#include "logger.h" #include "net.h" -#include "subnet.h" #include "route.h" - -#include "system.h" +#include "utils.h" enum { DEVICE_TYPE_ETHERTAP, @@ -61,18 +48,13 @@ enum { int device_fd = -1; int device_type; char *device; -char *interface; +char *iface; char ifrname[IFNAMSIZ]; char *device_info; int device_total_in = 0; int device_total_out = 0; -extern subnet_t mymac; - -/* - open the local ethertap device -*/ int setup_device(void) { struct ifreq ifr; @@ -82,28 +64,19 @@ int setup_device(void) if(!get_config_string(lookup_config(config_tree, "Device"), &device)) device = DEFAULT_DEVICE; - if(!get_config_string(lookup_config(config_tree, "Interface"), &interface)) + if(!get_config_string(lookup_config(config_tree, "Interface"), &iface)) #ifdef HAVE_TUNTAP - interface = netname; + iface = netname; #else - interface = rindex(device, '/') ? rindex(device, '/') + 1 : device; + iface = rindex(device, '/') ? rindex(device, '/') + 1 : device; #endif device_fd = open(device, O_RDWR | O_NONBLOCK); if(device_fd < 0) { - syslog(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno)); + logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno)); return -1; } - /* Set default MAC address for ethertap devices */ - mymac.type = SUBNET_MAC; - mymac.net.mac.address.x[0] = 0xfe; - mymac.net.mac.address.x[1] = 0xfd; - mymac.net.mac.address.x[2] = 0x00; - mymac.net.mac.address.x[3] = 0x00; - mymac.net.mac.address.x[4] = 0x00; - mymac.net.mac.address.x[5] = 0x00; - #ifdef HAVE_TUNTAP /* Ok now check if this is an old ethertap or a new tun/tap thingie */ @@ -118,25 +91,27 @@ int setup_device(void) device_info = _("Linux tun/tap device (tap mode)"); } - if(interface) - strncpy(ifr.ifr_name, interface, IFNAMSIZ); + if(iface) + strncpy(ifr.ifr_name, iface, IFNAMSIZ); if(!ioctl(device_fd, TUNSETIFF, (void *) &ifr)) { strncpy(ifrname, ifr.ifr_name, IFNAMSIZ); - interface = ifrname; + iface = ifrname; } else if(!ioctl(device_fd, (('T' << 8) | 202), (void *) &ifr)) { - syslog(LOG_WARNING, _("Old ioctl() request was needed for %s"), device); + logger(LOG_WARNING, _("Old ioctl() request was needed for %s"), device); strncpy(ifrname, ifr.ifr_name, IFNAMSIZ); - interface = ifrname; + iface = ifrname; } else #endif { + if(routing_mode == RMODE_ROUTER) + overwrite_mac = 1; device_info = _("Linux ethertap device"); device_type = DEVICE_TYPE_ETHERTAP; - interface = rindex(device, '/') ? rindex(device, '/') + 1 : device; + iface = rindex(device, '/') ? rindex(device, '/') + 1 : device; } - syslog(LOG_INFO, _("%s is a %s"), device, device_info); + logger(LOG_INFO, _("%s is a %s"), device, device_info); return 0; } @@ -148,10 +123,6 @@ void close_device(void) close(device_fd); } -/* - read, encrypt and send data that is - available through the ethertap device -*/ int read_packet(vpn_packet_t *packet) { int lenin; @@ -163,7 +134,7 @@ int read_packet(vpn_packet_t *packet) lenin = read(device_fd, packet->data + 10, MTU - 10); if(lenin <= 0) { - syslog(LOG_ERR, _("Error while reading from %s %s: %s"), + logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno)); return -1; } @@ -174,7 +145,7 @@ int read_packet(vpn_packet_t *packet) lenin = read(device_fd, packet->data, MTU); if(lenin <= 0) { - syslog(LOG_ERR, _("Error while reading from %s %s: %s"), + logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno)); return -1; } @@ -185,7 +156,7 @@ int read_packet(vpn_packet_t *packet) lenin = read(device_fd, packet->data - 2, MTU + 2); if(lenin <= 0) { - syslog(LOG_ERR, _("Error while reading from %s %s: %s"), + logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno)); return -1; } @@ -196,10 +167,8 @@ int read_packet(vpn_packet_t *packet) device_total_in += packet->len; - if(debug_lvl >= DEBUG_TRAFFIC) { - syslog(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len, + ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len, device_info); - } return 0; } @@ -208,22 +177,21 @@ int write_packet(vpn_packet_t *packet) { cp(); - if(debug_lvl >= DEBUG_TRAFFIC) - syslog(LOG_DEBUG, _("Writing packet of %d bytes to %s"), + ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"), packet->len, device_info); switch(device_type) { case DEVICE_TYPE_TUN: packet->data[10] = packet->data[11] = 0; if(write(device_fd, packet->data + 10, packet->len - 10) < 0) { - syslog(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, + logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, strerror(errno)); return -1; } break; case DEVICE_TYPE_TAP: if(write(device_fd, packet->data, packet->len) < 0) { - syslog(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, + logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, strerror(errno)); return -1; } @@ -232,7 +200,7 @@ int write_packet(vpn_packet_t *packet) *(short int *)(packet->data - 2) = packet->len; if(write(device_fd, packet->data - 2, packet->len + 2) < 0) { - syslog(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, + logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, strerror(errno)); return -1; } @@ -248,7 +216,7 @@ void dump_device_stats(void) { cp(); - syslog(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device); - syslog(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in); - syslog(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out); + logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device); + logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in); + logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out); }