/*
device.c -- raw socket
Copyright (C) 2002-2005 Ivo Timmermans,
- 2002-2009 Guus Sliepen <guus@tinc-vpn.org>
+ 2002-2012 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
#include "system.h"
+#ifdef HAVE_NETPACKET_PACKET_H
#include <netpacket/packet.h>
+#endif
#include "conf.h"
#include "device.h"
#include "route.h"
#include "xalloc.h"
-int device_fd = -1;
-char *device = NULL;
-char *iface = NULL;
-static char ifrname[IFNAMSIZ];
+#if defined(PF_PACKET) && defined(ETH_P_ALL) && defined(AF_PACKET)
static char *device_info;
static uint64_t device_total_in = 0;
static uint64_t device_total_out = 0;
-bool setup_device(void) {
+static bool setup_device(void) {
struct ifreq ifr;
struct sockaddr_ll sa;
}
memset(&ifr, 0, sizeof ifr);
+
+#ifdef FD_CLOEXEC
+ fcntl(device_fd, F_SETFD, FD_CLOEXEC);
+#endif
+
strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
if(ioctl(device_fd, SIOCGIFINDEX, &ifr)) {
close(device_fd);
return true;
}
-void close_device(void) {
+static void close_device(void) {
close(device_fd);
free(device);
free(iface);
}
-bool read_packet(vpn_packet_t *packet) {
+static bool read_packet(vpn_packet_t *packet) {
int inlen;
if((inlen = read(device_fd, packet->data, MTU)) <= 0) {
return true;
}
-bool write_packet(vpn_packet_t *packet) {
+static bool write_packet(vpn_packet_t *packet) {
ifdebug(TRAFFIC) logger(LOG_DEBUG, "Writing packet of %d bytes to %s",
packet->len, device_info);
return true;
}
-void dump_device_stats(void) {
+static 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);
}
+
+const devops_t raw_socket_devops = {
+ .setup = setup_device,
+ .close = close_device,
+ .read = read_packet,
+ .write = write_packet,
+ .dump_stats = dump_device_stats,
+};
+
+#else
+
+static bool not_supported(void) {
+ logger(LOG_ERR, "Raw socket device not supported on this platform");
+ return false;
+}
+
+const devops_t raw_socket_devops = {
+ .setup = not_supported,
+ .close = NULL,
+ .read = NULL,
+ .write = NULL,
+ .dump_stats = NULL,
+};
+#endif