+++ /dev/null
-/*
- device.c -- VDE plug
- Copyright (C) 2011 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-#include "system.h"
-
-#include <libvdeplug_dyn.h>
-
-#include "conf.h"
-#include "device.h"
-#include "net.h"
-#include "logger.h"
-#include "utils.h"
-#include "route.h"
-#include "xalloc.h"
-
-int device_fd = -1;
-static struct vdepluglib plug;
-static struct vdeconn *conn = NULL;
-static int port = 0;
-static char *group = NULL;
-char *device = NULL;
-char *iface = NULL;
-static char *device_info;
-
-extern char *identname;
-extern volatile bool running;
-
-static uint64_t device_total_in = 0;
-static uint64_t device_total_out = 0;
-
-bool setup_device(void) {
- libvdeplug_dynopen(plug);
-
- if(!plug.dl_handle) {
- logger(LOG_ERR, "Could not open libvdeplug library!");
- return false;
- }
-
- if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- xasprintf(&device, LOCALSTATEDIR "/run/vde.ctl");
-
- get_config_string(lookup_config(config_tree, "Interface"), &iface);
-
- get_config_int(lookup_config(config_tree, "VDEPort"), &port);
-
- get_config_string(lookup_config(config_tree, "VDEGroup"), &group);
-
- device_info = "VDE socket";
-
- struct vde_open_args args = {
- .port = port,
- .group = group,
- .mode = 0700,
- };
-
- conn = plug.vde_open(device, identname, &args);
- if(!conn) {
- logger(LOG_ERR, "Could not open VDE socket %s", device);
- return false;
- }
-
- device_fd = plug.vde_datafd(conn);
-
- logger(LOG_INFO, "%s is a %s", device, device_info);
-
- if(routing_mode == RMODE_ROUTER)
- overwrite_mac = true;
-
- return true;
-}
-
-void close_device(void) {
- if(conn)
- plug.vde_close(conn);
-
- if(plug.dl_handle)
- libvdeplug_dynclose(plug);
-
- free(device);
-
- free(iface);
-}
-
-bool read_packet(vpn_packet_t *packet) {
- int lenin = plug.vde_recv(conn, packet->data, MTU, 0);
- if(lenin <= 0) {
- logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno));
- running = false;
- return false;
- }
-
- packet->len = lenin;
- device_total_in += packet->len;
- ifdebug(TRAFFIC) logger(LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, device_info);
-
- return true;
-}
-
-bool write_packet(vpn_packet_t *packet) {
- if(plug.vde_send(conn, packet->data, packet->len, 0) < 0) {
- if(errno != EINTR && errno != EAGAIN) {
- logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno));
- running = false;
- }
-
- return false;
- }
-
- device_total_out += packet->len;
-
- return true;
-}
-
-void dump_device_stats(void) {
- logger(LOG_DEBUG, "Statistics for %s %s:", device_info, device);
- logger(LOG_DEBUG, " total bytes in: %10"PRIu64, device_total_in);
- logger(LOG_DEBUG, " total bytes out: %10"PRIu64, device_total_out);
-}