/*
device.c -- Interaction BSD tun/tap device
- Copyright (C) 2001-2004 Ivo Timmermans <ivo@tinc-vpn.org>,
- 2001-2004 Guus Sliepen <guus@tinc-vpn.org>
+ Copyright (C) 2001-2005 Ivo Timmermans,
+ 2001-2007 Guus Sliepen <guus@tinc-vpn.org>
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
#endif
bool setup_device(void) {
-#ifdef TUNSIFHEAD
- const int zero = 0;
- const int one = 1;
-#endif
char *type;
cp();
device_type = DEVICE_TYPE_TUN;
case DEVICE_TYPE_TUN:
#ifdef TUNSIFHEAD
+ {
+ const int zero = 0;
if(ioctl(device_fd, TUNSIFHEAD, &zero, sizeof zero) == -1) {
logger(LOG_ERR, _("System call `%s' failed: %s"), "ioctl", strerror(errno));
return false;
}
+ }
+#endif
+#if defined(TUNSIFMODE) && defined(IFF_BROADCAST) && defined(IFF_MULTICAST)
+ {
+ const int mode = IFF_BROADCAST | IFF_MULTICAST;
+ ioctl(device_fd, TUNSIFMODE, &mode, sizeof mode);
+ }
#endif
+
device_info = _("Generic BSD tun device");
break;
case DEVICE_TYPE_TUNIFHEAD:
#ifdef TUNSIFHEAD
+ {
+ const int one = 1;
if(ioctl(device_fd, TUNSIFHEAD, &one, sizeof one) == -1) {
logger(LOG_ERR, _("System call `%s' failed: %s"), "ioctl", strerror(errno));
return false;
}
+ }
#endif
+#if defined(TUNSIFMODE) && defined(IFF_BROADCAST) && defined(IFF_MULTICAST)
+ {
+ const int mode = IFF_BROADCAST | IFF_MULTICAST;
+ ioctl(device_fd, TUNSIFMODE, &mode, sizeof mode);
+ }
+#endif
+
device_info = _("Generic BSD tun device");
break;
case DEVICE_TYPE_TAP:
}
bool read_packet(vpn_packet_t *packet) {
- int lenin;
+ int inlen;
cp();
switch(device_type) {
case DEVICE_TYPE_TUN:
- if((lenin = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
+ if((inlen = read(device_fd, packet->data + 14, MTU - 14)) <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
device, strerror(errno));
return false;
return false;
}
- packet->len = lenin + 14;
+ packet->len = inlen + 14;
break;
case DEVICE_TYPE_TUNIFHEAD: {
u_int32_t type;
- struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, MTU - 14}};
+ struct iovec vector[2] = {{&type, sizeof type}, {packet->data + 14, MTU - 14}};
- if((lenin = readv(device_fd, vector, 2)) <= 0) {
+ if((inlen = readv(device_fd, vector, 2)) <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
device, strerror(errno));
return false;
return false;
}
- packet->len = lenin + 10;
+ packet->len = inlen + 10;
break;
}
case DEVICE_TYPE_TAP:
- if((lenin = read(device_fd, packet->data, MTU)) <= 0) {
+ if((inlen = read(device_fd, packet->data, MTU)) <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
device, strerror(errno));
return false;
}
- packet->len = lenin;
+ packet->len = inlen;
break;
default:
return true;
}
-bool write_packet(vpn_packet_t *packet)
-{
+bool write_packet(vpn_packet_t *packet) {
cp();
ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
case DEVICE_TYPE_TUNIFHEAD: {
u_int32_t type;
- struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, MTU - 14}};
+ struct iovec vector[2] = {{&type, sizeof type}, {packet->data + 14, packet->len - 14}};
int af;
af = (packet->data[12] << 8) + packet->data[13];
return true;
}
-void dump_device_stats(void)
-{
+void dump_device_stats(void) {
cp();
logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);