/*
device.c -- raw socket
Copyright (C) 2002-2005 Ivo Timmermans,
- 2002-2011 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"
+#if defined(PF_PACKET) && defined(ETH_P_ALL) && defined(AF_PACKET)
static char *device_info;
static uint64_t device_total_in = 0;
return false;
}
- memset(&ifr, 0, sizeof(ifr));
+ 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 false;
}
- memset(&sa, '0', sizeof(sa));
+ memset(&sa, '0', sizeof sa);
sa.sll_family = AF_PACKET;
sa.sll_protocol = htons(ETH_P_ALL);
sa.sll_ifindex = ifr.ifr_ifindex;
- if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof(sa))) {
+ if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof sa)) {
logger(LOG_ERR, "Could not bind %s to %s: %s", device, iface, strerror(errno));
return false;
}
}
static bool read_packet(vpn_packet_t *packet) {
- int lenin;
+ int inlen;
- 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;
device_total_in += packet->len;
.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