mirror of
https://github.com/reactos/reactos.git
synced 2024-11-09 16:20:37 +00:00
160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS TCP/IP protocol driver
|
|
* FILE: datalink/loopback.c
|
|
* PURPOSE: Loopback adapter
|
|
* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
|
|
* REVISIONS:
|
|
* CSH 01/08-2000 Created
|
|
*/
|
|
|
|
#include "precomp.h"
|
|
|
|
PIP_INTERFACE Loopback = NULL;
|
|
|
|
VOID LoopPassiveWorker(
|
|
PVOID Context)
|
|
{
|
|
PIP_PACKET IPPacket = Context;
|
|
|
|
/* IPReceive() takes care of the NDIS packet */
|
|
IPReceive(Loopback, IPPacket);
|
|
|
|
ExFreePool(IPPacket);
|
|
}
|
|
|
|
VOID LoopTransmit(
|
|
PVOID Context,
|
|
PNDIS_PACKET NdisPacket,
|
|
UINT Offset,
|
|
PVOID LinkAddress,
|
|
USHORT Type)
|
|
/*
|
|
* FUNCTION: Transmits a packet
|
|
* ARGUMENTS:
|
|
* Context = Pointer to context information (NULL)
|
|
* NdisPacket = Pointer to NDIS packet to send
|
|
* Offset = Offset in packet where packet data starts
|
|
* LinkAddress = Pointer to link address
|
|
* Type = LAN protocol type (unused)
|
|
*/
|
|
{
|
|
PCHAR PacketBuffer;
|
|
UINT PacketLength;
|
|
PNDIS_PACKET XmitPacket;
|
|
NDIS_STATUS NdisStatus;
|
|
PIP_PACKET IPPacket;
|
|
|
|
ASSERT_KM_POINTER(NdisPacket);
|
|
ASSERT_KM_POINTER(PC(NdisPacket));
|
|
ASSERT_KM_POINTER(PC(NdisPacket)->DLComplete);
|
|
|
|
TI_DbgPrint(MAX_TRACE, ("Called (NdisPacket = %x)\n", NdisPacket));
|
|
|
|
GetDataPtr( NdisPacket, 0, &PacketBuffer, &PacketLength );
|
|
|
|
NdisStatus = AllocatePacketWithBuffer
|
|
( &XmitPacket, PacketBuffer, PacketLength );
|
|
|
|
if( NT_SUCCESS(NdisStatus) ) {
|
|
IPPacket = ExAllocatePool(NonPagedPool, sizeof(IP_PACKET));
|
|
if (IPPacket)
|
|
{
|
|
IPInitializePacket(IPPacket, 0);
|
|
|
|
IPPacket->NdisPacket = XmitPacket;
|
|
|
|
GetDataPtr(IPPacket->NdisPacket,
|
|
0,
|
|
(PCHAR*)&IPPacket->Header,
|
|
&IPPacket->TotalSize);
|
|
|
|
IPPacket->MappedHeader = TRUE;
|
|
|
|
if (!ChewCreate(LoopPassiveWorker, IPPacket))
|
|
{
|
|
IPPacket->Free(IPPacket);
|
|
ExFreePool(IPPacket);
|
|
NdisStatus = NDIS_STATUS_RESOURCES;
|
|
}
|
|
}
|
|
else
|
|
NdisStatus = NDIS_STATUS_RESOURCES;
|
|
}
|
|
|
|
(PC(NdisPacket)->DLComplete)
|
|
( PC(NdisPacket)->Context, NdisPacket, NdisStatus );
|
|
}
|
|
|
|
NDIS_STATUS LoopRegisterAdapter(
|
|
PNDIS_STRING AdapterName,
|
|
PLAN_ADAPTER *Adapter)
|
|
/*
|
|
* FUNCTION: Registers loopback adapter with the network layer
|
|
* ARGUMENTS:
|
|
* AdapterName = Unused
|
|
* Adapter = Unused
|
|
* RETURNS:
|
|
* Status of operation
|
|
*/
|
|
{
|
|
LLIP_BIND_INFO BindInfo;
|
|
|
|
TI_DbgPrint(MID_TRACE, ("Called.\n"));
|
|
|
|
/* Bind the adapter to network (IP) layer */
|
|
BindInfo.Context = NULL;
|
|
BindInfo.HeaderSize = 0;
|
|
BindInfo.MinFrameSize = 0;
|
|
BindInfo.Address = NULL;
|
|
BindInfo.AddressLength = 0;
|
|
BindInfo.Transmit = LoopTransmit;
|
|
|
|
Loopback = IPCreateInterface(&BindInfo);
|
|
if (!Loopback) return NDIS_STATUS_RESOURCES;
|
|
|
|
Loopback->MTU = 16384;
|
|
|
|
Loopback->Name.Buffer = L"Loopback";
|
|
Loopback->Name.MaximumLength = Loopback->Name.Length =
|
|
wcslen(Loopback->Name.Buffer) * sizeof(WCHAR);
|
|
|
|
AddrInitIPv4(&Loopback->Unicast, LOOPBACK_ADDRESS_IPv4);
|
|
AddrInitIPv4(&Loopback->Netmask, LOOPBACK_ADDRMASK_IPv4);
|
|
AddrInitIPv4(&Loopback->Broadcast, LOOPBACK_BCASTADDR_IPv4);
|
|
|
|
IPRegisterInterface(Loopback);
|
|
|
|
IPAddInterfaceRoute(Loopback);
|
|
|
|
TI_DbgPrint(MAX_TRACE, ("Leaving.\n"));
|
|
|
|
return NDIS_STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
NDIS_STATUS LoopUnregisterAdapter(
|
|
PLAN_ADAPTER Adapter)
|
|
/*
|
|
* FUNCTION: Unregisters loopback adapter with the network layer
|
|
* ARGUMENTS:
|
|
* Adapter = Unused
|
|
* RETURNS:
|
|
* Status of operation
|
|
* NOTES:
|
|
* Does not care wether we have registered loopback adapter
|
|
*/
|
|
{
|
|
TI_DbgPrint(MID_TRACE, ("Called.\n"));
|
|
|
|
if (Loopback != NULL)
|
|
{
|
|
IPUnregisterInterface(Loopback);
|
|
IPDestroyInterface(Loopback);
|
|
Loopback = NULL;
|
|
}
|
|
|
|
TI_DbgPrint(MAX_TRACE, ("Leaving.\n"));
|
|
|
|
return NDIS_STATUS_SUCCESS;
|
|
}
|