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using System.Runtime.InteropServices;
namespace System.Net.NetworkInformation {
namespace AixStructs {
//[StructLayout(LayoutKind.Sequential)]
[StructLayout(LayoutKind.Explicit, Size = 16)]
internal struct ifconf
{
[FieldOffset (0)]
public int ifc_len; /* size of buffer */
[FieldOffset (8)]
public IntPtr ifc_buf; /* buffer address/array of structures returned */
}
// approximate the union members after the name with different structs
[StructLayout (LayoutKind.Explicit, CharSet=CharSet.Ansi, Size=18)]
internal unsafe struct ifreq
{
// it must be a byte array; a char array seems to want to be 2 bytes per element,
// and a ByVal string doesn't want to seem to marshal properly for being written to
[FieldOffset (0)]
public fixed byte ifr_name [16];
// you must peer into the family and length, then use ptr arith to get the rest
[FieldOffset (16)]
public sockaddr ifru_addr;
}
[StructLayout (LayoutKind.Explicit, CharSet=CharSet.Ansi, Size=24)]
internal unsafe struct ifreq_addrin
{
[FieldOffset (0)]
public fixed byte ifr_name [16];
[FieldOffset (16)]
public sockaddr_in ifru_addr;
}
// For SIOCGIFFLAGS
[StructLayout (LayoutKind.Explicit, CharSet=CharSet.Ansi, Size=20)]
internal unsafe struct ifreq_flags
{
[FieldOffset (0)]
public fixed byte ifr_name [16];
[FieldOffset (16)]
public uint ifru_flags;
}
// For SIOCGIFMTU
[StructLayout (LayoutKind.Explicit, CharSet=CharSet.Ansi, Size=20)]
internal unsafe struct ifreq_mtu
{
[FieldOffset (0)]
public fixed byte ifr_name [16];
[FieldOffset (16)]
public int ifru_mtu;
}
// the rest copied from Mac OS defs
[StructLayout(LayoutKind.Sequential)]
internal struct sockaddr
{
public byte sa_len;
public byte sa_family;
}
[StructLayout(LayoutKind.Sequential)]
internal struct sockaddr_in
{
public byte sin_len;
public byte sin_family;
public ushort sin_port;
public uint sin_addr;
}
[StructLayout(LayoutKind.Sequential)]
internal struct in6_addr
{
[MarshalAs (UnmanagedType.ByValArray, SizeConst=16)]
public byte[] u6_addr8;
}
[StructLayout(LayoutKind.Sequential)]
internal struct sockaddr_in6
{
public byte sin6_len;
public byte sin6_family;
public ushort sin6_port;
public uint sin6_flowinfo;
public in6_addr sin6_addr;
public uint sin6_scope_id;
}
[StructLayout(LayoutKind.Sequential)]
internal struct sockaddr_dl
{
public byte sdl_len;
public byte sdl_family;
public ushort sdl_index;
public byte sdl_type;
public byte sdl_nlen;
public byte sdl_alen;
public byte sdl_slen;
public byte[] sdl_data;
internal void Read (IntPtr ptr)
{
sdl_len = Marshal.ReadByte (ptr, 0);
sdl_family = Marshal.ReadByte (ptr, 1);
sdl_index = (ushort) Marshal.ReadInt16 (ptr, 2);
sdl_type = Marshal.ReadByte (ptr, 4);
sdl_nlen = Marshal.ReadByte (ptr, 5);
sdl_alen = Marshal.ReadByte (ptr, 6);
sdl_slen = Marshal.ReadByte (ptr, 7);
sdl_data = new byte [Math.Max (12, sdl_len - 8)];
Marshal.Copy (new IntPtr (ptr.ToInt64 () + 8), sdl_data, 0, sdl_data.Length);
}
}
}
// see: net/if_types.h
internal enum AixArpHardware {
ETHER = 0x6,
ATM = 0x25,
SLIP = 0x1c,
PPP = 0x17,
LOOPBACK = 0x18,
FDDI = 0xf
}
// see: net/if.h
internal enum AixInterfaceFlags {
IFF_UP = 0x1, /* interface is up */
IFF_BROADCAST = 0x2, /* broadcast address valid */
IFF_DEBUG = 0x4, /* turn on debugging */
IFF_LOOPBACK = 0x8, /* is a loopback net */
IFF_POINTOPOINT = 0x10, /* interface is point-to-point link */
IFF_NOTRAILERS = 0x20, /* avoid use of trailers */
IFF_RUNNING = 0x40, /* resources allocated */
IFF_NOARP = 0x80, /* no address resolution protocol */
IFF_PROMISC = 0x100, /* receive all packets */
IFF_ALLMULTI = 0x200, /* receive all multicast packets */
IFF_OACTIVE = 0x400, /* transmission in progress */
IFF_SIMPLEX = 0x800, /* can't hear own transmissions */
IFF_LINK0 = 0x100000, /* per link layer defined bit */
IFF_LINK1 = 0x200000, /* per link layer defined bit */
IFF_LINK2 = 0x400000, /* per link layer defined bit */
IFF_MULTICAST = 0x8000000 /* supports multicast */
}
// Address families that matter to us
internal enum AixAddressFamily {
AF_INET = 2,
AF_INET6 = 24,
AF_LINK = 18,
}
// ioctl commands that matter to us
internal enum AixIoctlRequest : uint {
SIOCGSIZIFCONF = 0x4004696a, /* get the buffer size for SIOCGIFCONF */
SIOCGIFCONF = 0xc0106945, /* list network interfaces */
SIOCGIFFLAGS = 0xc0286911, /* get interface flags */
SIOCGIFNETMASK = 0xc0286925, /* get netmask for iface */
SIOCGIFMTU = 0xc0286956, /* get mtu for iface */
}
}
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