public static unsafe NetworkInterface[] GetLinuxNetworkInterfaces()
{
var systemProperties = new LinuxNetworkInterfaceSystemProperties();
int interfaceCount = 0;
int addressCount = 0;
Interop.Sys.NetworkInterfaceInfo *nii = null;
Interop.Sys.IpAddressInfo * ai = null;
IntPtr globalMemory = (IntPtr)null;
if (Interop.Sys.GetNetworkInterfaces(ref interfaceCount, ref nii, ref addressCount, ref ai) != 0)
{
string message = Interop.Sys.GetLastErrorInfo().GetErrorMessage();
throw new NetworkInformationException(message);
}
globalMemory = (IntPtr)nii;
try
{
NetworkInterface[] interfaces = new NetworkInterface[interfaceCount];
Dictionary <int, LinuxNetworkInterface> interfacesByIndex = new Dictionary <int, LinuxNetworkInterface>(interfaceCount);
for (int i = 0; i < interfaceCount; i++)
{
var lni = new LinuxNetworkInterface(Marshal.PtrToStringAnsi((IntPtr)nii->Name) !, nii->InterfaceIndex, systemProperties);
lni._interfaceType = (NetworkInterfaceType)nii->HardwareType;
lni._speed = nii->Speed;
lni._operationalStatus = (OperationalStatus)nii->OperationalState;
lni._mtu = nii->Mtu;
lni._supportsMulticast = nii->SupportsMulticast != 0;
if (nii->NumAddressBytes > 0)
{
lni._physicalAddress = new PhysicalAddress(new ReadOnlySpan <byte>(nii->AddressBytes, nii->NumAddressBytes).ToArray());
}
interfaces[i] = lni;
interfacesByIndex.Add(nii->InterfaceIndex, lni);
nii++;
}
while (addressCount != 0)
{
var address = new IPAddress(new ReadOnlySpan <byte>(ai->AddressBytes, ai->NumAddressBytes));
if (address.IsIPv6LinkLocal)
{
address.ScopeId = ai->InterfaceIndex;
}
if (interfacesByIndex.TryGetValue(ai->InterfaceIndex, out LinuxNetworkInterface? lni))
{
lni.AddAddress(address, ai->PrefixLength);
}
ai++;
addressCount--;
}
return(interfaces);
}
finally
{
Marshal.FreeHGlobal(globalMemory);
}
}
internal LinuxNetworkInterface(string name, int index, LinuxNetworkInterfaceSystemProperties systemProperties) : base(name)
{
_index = index;
_ipProperties = new LinuxIPInterfaceProperties(this, systemProperties);
}