protected unsafe int NativeTransmit(PcapDevice device, bool synchronized)
{
int sync = synchronized ? 1 : 0;
fixed(byte *buf = buffer)
{
var pcap_queue = new pcap_send_queue
{
maxlen = (uint)buffer.Length,
len = (uint)CurrentLength,
ptrBuff = new IntPtr(buf)
};
return(LibPcapSafeNativeMethods.pcap_sendqueue_transmit(device.PcapHandle, ref pcap_queue, sync));
}
}
private static bool GetIsHardwareAccelerated()
{
using (var handle = LibPcapSafeNativeMethods.pcap_open_dead(1, 60))
{
try
{
pcap_send_queue queue = default;
LibPcapSafeNativeMethods.pcap_sendqueue_transmit(handle, ref queue, 0);
return(true);
}
catch (TypeLoadException)
{
// Function pcap_sendqueue_transmit not found
return(false);
}
}
}
protected unsafe int NativeTransmit(PcapDevice device, SendQueueTransmitModes transmitMode)
{
if (CurrentLength == 0)
{
// Npcap does not properly check for 0 packets queue
// See https://github.com/nmap/npcap/issues/287
return(0);
}
int sync = (transmitMode == SendQueueTransmitModes.Synchronized) ? 1 : 0;
fixed(byte *buf = buffer)
{
var pcap_queue = new pcap_send_queue
{
maxlen = (uint)buffer.Length,
len = (uint)CurrentLength,
ptrBuff = new IntPtr(buf)
};
return(LibPcapSafeNativeMethods.pcap_sendqueue_transmit(device.PcapHandle, ref pcap_queue, sync));
}
}