/**
* Configure, set up and allocate the TUN/TAP device.
*
* If the TUN/TAP device was allocated successfully the file descriptor is returned.
* Otherwise the application closes with an error.
* @note Currently only a TUN device with multi queue is used.
*
* @return The TUN/TAP device file descriptor
*/
int configureAndSetUpTunDevice() {
std::string tunTapDevice = "tun_nrf24";
strcpy(tunName, tunTapDevice.c_str());
//int flags = IFF_TUN | IFF_NO_PI | IFF_MULTI_QUEUE;
int flags = IFF_TAP | IFF_NO_PI;// | IFF_MULTI_QUEUE;
tunFd = allocateTunDevice(tunName, flags);
if (tunFd >= 0) {
std::cout << "Successfully attached to tun/tap device " << tunTapDevice << std::endl;
} else {
std::cerr << "Error allocating tun/tap interface: " << tunFd << std::endl;
exit(1);
}
return tunFd;
}
void TunTapComponent::start()
{
//LOG(LDEBUG) << "start() called.";
// Connect to the device
strcpy(tunName_, tunTapDevice_x.c_str());
int flags = strstr(tunName_, "tap") == NULL ? IFF_TUN | IFF_NO_PI : IFF_TAP | IFF_NO_PI;
if ((tunFd_ = allocateTunDevice(tunName_, flags)) >= 0)
{
LOG(LINFO) << "Successfully attached to tun/tap device "
<< tunTapDevice_x;
}
else
{
LOG(LFATAL) << "Error allocating tun/tap interface.";
return;
}
// start thread
rxThread_.reset(new boost::thread(boost::bind( &TunTapComponent::rxThreadFunction, this)));
}
int RF24Gateway::configDevice(uint16_t address){
std::string tunTapDevice = "tun_nrf24";
strcpy(tunName, tunTapDevice.c_str());
int flags;
if(config_TUN){
flags = IFF_TUN | IFF_NO_PI | IFF_MULTI_QUEUE;
}else{
flags = IFF_TAP | IFF_NO_PI | IFF_MULTI_QUEUE;
}
tunFd = allocateTunDevice(tunName, flags, address);
#if DEBUG >= 1
if (tunFd >= 0) {
std::cout << "RF24Gw: Successfully attached to tun/tap device " << tunTapDevice << std::endl;
} else {
std::cerr << "RF24Gw: Error allocating tun/tap interface: " << tunFd << std::endl;
exit(1);
}
#endif
return tunFd;
}