diff options
Diffstat (limited to 'EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_arp.c')
| -rw-r--r-- | EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_arp.c | 611 |
1 files changed, 0 insertions, 611 deletions
diff --git a/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_arp.c b/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_arp.c deleted file mode 100644 index 747d243f1f..0000000000 --- a/EdkModulePkg/Universal/Network/PxeBc/Dxe/pxe_bc_arp.c +++ /dev/null @@ -1,611 +0,0 @@ -/*++
-
-Copyright (c) 2006 - 2007, Intel Corporation
-All rights reserved. This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-Module Name:
- pxe_bc_arp.c
-
-Abstract:
-
---*/
-
-
-#include "Bc.h"
-
-//
-// Definitions for ARP
-// Per RFC 826
-//
-STATIC ARP_HEADER ArpHeader;
-
-#pragma pack(1)
-STATIC struct {
- UINT8 MediaHeader[14];
- ARP_HEADER ArpHeader;
- UINT8 ArpData[64];
-} ArpReplyPacket;
-#pragma pack()
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-VOID
-InitArpHeader (
- VOID
- )
-/*++
-Routine description:
- Initialize ARP packet header.
-
-Parameters:
- none
-
-Returns:
- none
-
---*/
-{
- ArpHeader.HwType = HTONS (ETHERNET_ADD_SPC);
- ArpHeader.ProtType = HTONS (ETHER_TYPE_IP);
- ArpHeader.HwAddLen = ENET_HWADDLEN;
- ArpHeader.ProtAddLen = IPV4_PROTADDLEN;
- ArpHeader.OpCode = HTONS (ARP_REQUEST);
-
- CopyMem (&ArpReplyPacket.ArpHeader, &ArpHeader, sizeof (ARP_HEADER));
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-VOID
-HandleArpReceive (
- IN PXE_BASECODE_DEVICE *Private,
- IN ARP_PACKET *ArpPacketPtr,
- IN VOID *MediaHeader
- )
-/*++
-Routine description:
- Process ARP packet.
-
-Parameters:
- Private := Pointer to PxeBc interface
- ArpPacketPtr := Pointer to ARP packet
- MediaHeader := Pointer to media header.
-Returns:
---*/
-{
- EFI_PXE_BASE_CODE_MODE *PxeBcMode;
- EFI_SIMPLE_NETWORK_MODE *SnpMode;
- EFI_MAC_ADDRESS TmpMacAddr;
- UINTN Index;
- UINT8 *SrcHwAddr;
- UINT8 *SrcPrAddr;
- UINT8 *DstHwAddr;
- UINT8 *DstPrAddr;
- UINT8 *TmpPtr;
-
- //
- //
- //
- PxeBcMode = Private->EfiBc.Mode;
- SnpMode = Private->SimpleNetwork->Mode;
-
- //
- // For now only ethernet addresses are supported.
- // This will need to be updated when other media
- // layers are supported by PxeBc, Snp and UNDI.
- //
- if (ArpPacketPtr->ArpHeader.HwType != HTONS (ETHERNET_ADD_SPC)) {
- return ;
- }
- //
- // For now only IP protocol addresses are supported.
- // This will need to be updated when other protocol
- // types are supported by PxeBc, Snp and UNDI.
- //
- if (ArpPacketPtr->ArpHeader.ProtType != HTONS (ETHER_TYPE_IP)) {
- return ;
- }
- //
- // For now only SNP hardware address sizes are supported.
- //
- if (ArpPacketPtr->ArpHeader.HwAddLen != SnpMode->HwAddressSize) {
- return ;
- }
- //
- // For now only PxeBc protocol address sizes are supported.
- //
- if (ArpPacketPtr->ArpHeader.ProtAddLen != Private->IpLength) {
- return ;
- }
- //
- // Ignore out of range opcodes
- //
- switch (ArpPacketPtr->ArpHeader.OpCode) {
- case HTONS (ARP_REPLY):
- case HTONS (ARP_REQUEST):
- break;
-
- default:
- return ;
- }
- //
- // update entry in our ARP cache if we have it
- //
- SrcHwAddr = (UINT8 *) &ArpPacketPtr->SrcHardwareAddr;
- SrcPrAddr = SrcHwAddr + SnpMode->HwAddressSize;
-
- for (Index = 0; Index < PxeBcMode->ArpCacheEntries; ++Index) {
- if (CompareMem (
- &PxeBcMode->ArpCache[Index].IpAddr,
- SrcPrAddr,
- Private->IpLength
- )) {
- continue;
- }
-
- CopyMem (
- &PxeBcMode->ArpCache[Index].MacAddr,
- SrcHwAddr,
- SnpMode->HwAddressSize
- );
-
- break;
- }
- //
- // Done if ARP packet was not for us.
- //
- DstHwAddr = SrcPrAddr + Private->IpLength;
- DstPrAddr = DstHwAddr + SnpMode->HwAddressSize;
-
- if (CompareMem (DstPrAddr, &PxeBcMode->StationIp, Private->IpLength)) {
- return ;
- //
- // not for us
- //
- }
- //
- // for us - if we did not update entry, add it
- //
- if (Index == PxeBcMode->ArpCacheEntries) {
- //
- // if we have a full table, get rid of oldest
- //
- if (Index == PXE_ARP_CACHE_SIZE) {
- Index = Private->OldestArpEntry;
-
- if (++Private->OldestArpEntry == PXE_ARP_CACHE_SIZE) {
- Private->OldestArpEntry = 0;
- }
- } else {
- ++PxeBcMode->ArpCacheEntries;
- }
-
- CopyMem (
- &PxeBcMode->ArpCache[Index].MacAddr,
- SrcHwAddr,
- SnpMode->HwAddressSize
- );
-
- CopyMem (
- &PxeBcMode->ArpCache[Index].IpAddr,
- SrcPrAddr,
- Private->IpLength
- );
- }
- //
- // if this is not a request or we don't yet have an IP, finished
- //
- if (ArpPacketPtr->ArpHeader.OpCode != HTONS (ARP_REQUEST) || !Private->GoodStationIp) {
- return ;
- }
- //
- // Assemble ARP reply.
- //
- //
- // Create media header. [ dest mac | src mac | prot ]
- //
- CopyMem (
- &ArpReplyPacket.MediaHeader[0],
- SrcHwAddr,
- SnpMode->HwAddressSize
- );
-
- CopyMem (
- &ArpReplyPacket.MediaHeader[SnpMode->HwAddressSize],
- &SnpMode->CurrentAddress,
- SnpMode->HwAddressSize
- );
-
- CopyMem (
- &ArpReplyPacket.MediaHeader[2 * SnpMode->HwAddressSize],
- &((UINT8 *) MediaHeader)[2 * SnpMode->HwAddressSize],
- sizeof (UINT16)
- );
-
- //
- // ARP reply header is almost filled in,
- // just insert the correct opcode.
- //
- ArpReplyPacket.ArpHeader.OpCode = HTONS (ARP_REPLY);
-
- //
- // Now fill in ARP data. [ src mac | src prot | dest mac | dest prot ]
- //
- TmpPtr = ArpReplyPacket.ArpData;
- CopyMem (TmpPtr, &SnpMode->CurrentAddress, SnpMode->HwAddressSize);
-
- TmpPtr += SnpMode->HwAddressSize;
- CopyMem (TmpPtr, &PxeBcMode->StationIp, Private->IpLength);
-
- TmpPtr += Private->IpLength;
- CopyMem (TmpPtr, SrcHwAddr, SnpMode->HwAddressSize);
-
- TmpPtr += SnpMode->HwAddressSize;
- CopyMem (TmpPtr, SrcPrAddr, Private->IpLength);
-
- //
- // Now send out the ARP reply.
- //
- CopyMem (&TmpMacAddr, SrcHwAddr, sizeof (EFI_MAC_ADDRESS));
-
- SendPacket (
- Private,
- &ArpReplyPacket.MediaHeader,
- &ArpReplyPacket.ArpHeader,
- sizeof (ARP_HEADER) + 2 * (Private->IpLength + SnpMode->HwAddressSize),
- &TmpMacAddr,
- PXE_PROTOCOL_ETHERNET_ARP,
- EFI_PXE_BASE_CODE_FUNCTION_ARP
- );
-
- //
- // Give time (100 microseconds) for ARP reply to get onto wire.
- //
- gBS->Stall (1000);
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-BOOLEAN
-GetHwAddr (
- IN PXE_BASECODE_DEVICE *Private,
- IN EFI_IP_ADDRESS *ProtocolAddrPtr,
- OUT EFI_MAC_ADDRESS *HardwareAddrPtr
- )
-/*++
-Routine description:
- Locate IP address in ARP cache and return MAC address.
-
-Parameters:
- Private := Pointer to PxeBc interface
- ProtocolAddrPtr := Pointer to IP address
- HardwareAddrPtr := Pointer to MAC address storage
-
-Returns:
- TRUE := If IP address was found and MAC address was stored
- FALSE := If IP address was not found
---*/
-{
- EFI_PXE_BASE_CODE_MODE *PxeBcMode;
- UINTN HardwareAddrLength;
- UINTN Index;
-
- PxeBcMode = Private->EfiBc.Mode;
- HardwareAddrLength = Private->SimpleNetwork->Mode->HwAddressSize;
-
- for (Index = 0; Index < PxeBcMode->ArpCacheEntries; ++Index) {
- if (!CompareMem (
- ProtocolAddrPtr,
- &PxeBcMode->ArpCache[Index].IpAddr,
- Private->IpLength
- )) {
- CopyMem (
- HardwareAddrPtr,
- &PxeBcMode->ArpCache[Index].MacAddr,
- HardwareAddrLength
- );
-
- return TRUE;
- }
- }
-
- return FALSE;
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-STATIC
-EFI_STATUS
-SendRequest (
- IN PXE_BASECODE_DEVICE *Private,
- IN EFI_IP_ADDRESS *ProtocolAddrPtr,
- IN EFI_MAC_ADDRESS *HardwareAddrPtr
- )
-/*++
-Routine description:
- Transmit ARP request packet
-
-Parameters:
- Private := Pointer to PxeBc interface
- ProtocolAddrPtr := Pointer IP address to find
- HardwareAddrPtr := Pointer to MAC address to find
-
-Returns:
- EFI_SUCCESS := ARP request sent
- other := ARP request could not be sent
---*/
-{
- EFI_PXE_BASE_CODE_MODE *PxeBcMode;
- EFI_SIMPLE_NETWORK_MODE *SnpMode;
- ARP_PACKET *ArpPacket;
- UINTN HardwareAddrLength;
- UINT8 *SrcProtocolAddrPtr;
- UINT8 *DestHardwareAddrptr;
- UINT8 *DestProtocolAddrPtr;
-
- //
- //
- //
- PxeBcMode = Private->EfiBc.Mode;
- SnpMode = Private->SimpleNetwork->Mode;
- HardwareAddrLength = SnpMode->HwAddressSize;
-
- //
- // Allocate ARP buffer
- //
- if (Private->ArpBuffer == NULL) {
- Private->ArpBuffer = AllocatePool (SnpMode->MediaHeaderSize + sizeof (ARP_PACKET));
- if (Private->ArpBuffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- }
-
- ArpPacket = (VOID *) (Private->ArpBuffer + SnpMode->MediaHeaderSize);
-
- //
- // for now, only handle one kind of hw and pr address
- //
- ArpPacket->ArpHeader = ArpHeader;
- ArpPacket->ArpHeader.HwAddLen = (UINT8) HardwareAddrLength;
- ArpPacket->ArpHeader.ProtAddLen = (UINT8) Private->IpLength;
-
- //
- // rest more generic
- //
- SrcProtocolAddrPtr = (UINT8 *) (&ArpPacket->SrcHardwareAddr) + HardwareAddrLength;
- DestHardwareAddrptr = SrcProtocolAddrPtr + Private->IpLength;
- DestProtocolAddrPtr = DestHardwareAddrptr + HardwareAddrLength;
-
- CopyMem (DestProtocolAddrPtr, ProtocolAddrPtr, Private->IpLength);
- CopyMem (DestHardwareAddrptr, HardwareAddrPtr, HardwareAddrLength);
- CopyMem (SrcProtocolAddrPtr, &PxeBcMode->StationIp, Private->IpLength);
- CopyMem (
- &ArpPacket->SrcHardwareAddr,
- &SnpMode->CurrentAddress,
- HardwareAddrLength
- );
-
- return SendPacket (
- Private,
- Private->ArpBuffer,
- ArpPacket,
- sizeof (ARP_HEADER) + ((Private->IpLength + HardwareAddrLength) << 1),
- &SnpMode->BroadcastAddress,
- PXE_PROTOCOL_ETHERNET_ARP,
- EFI_PXE_BASE_CODE_FUNCTION_ARP
- );
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-
-//
-// check for address - if not there, send ARP request, wait and check again
-// not how it would be done in a full system
-//
-#define ARP_REQUEST_TIMEOUT_MS 500 // try for half a second
-
- ////////////////////////////////////////////////////////////
-//
-// BC Arp Routine
-//
-EFI_STATUS
-EFIAPI
-BcArp (
- IN EFI_PXE_BASE_CODE_PROTOCOL * This,
- IN EFI_IP_ADDRESS * ProtocolAddrPtr,
- OUT EFI_MAC_ADDRESS * HardwareAddrPtr OPTIONAL
- )
-/*++
-Routine description:
- PxeBc ARP API.
-
-Parameters:
- This := Pointer to PxeBc interface
- ProtocolAddrPtr := Pointer to IP address to find
- HardwareAddrPtr := Pointer to MAC address found.
-
-Returns:
---*/
-{
- EFI_MAC_ADDRESS Mac;
- EFI_STATUS StatCode;
- PXE_BASECODE_DEVICE *Private;
-
- //
- // Lock the instance data and make sure started
- //
- StatCode = EFI_SUCCESS;
-
- if (This == NULL) {
- DEBUG ((EFI_D_ERROR, "BC *This pointer == NULL"));
- return EFI_INVALID_PARAMETER;
- }
-
- Private = CR (This, PXE_BASECODE_DEVICE, EfiBc, PXE_BASECODE_DEVICE_SIGNATURE);
-
- if (Private == NULL) {
- DEBUG ((EFI_D_ERROR, "PXE_BASECODE_DEVICE poiner == NULL"));
- return EFI_INVALID_PARAMETER;
- }
-
- EfiAcquireLock (&Private->Lock);
-
- if (This->Mode == NULL || !This->Mode->Started) {
- DEBUG ((EFI_D_ERROR, "BC was not started."));
- EfiReleaseLock (&Private->Lock);
- return EFI_NOT_STARTED;
- }
-
- DEBUG ((EFI_D_INFO, "\nBcArp()"));
-
- //
- // Issue BC command
- //
- if (ProtocolAddrPtr == NULL) {
- DEBUG (
- (EFI_D_INFO,
- "\nBcArp() Exit #1 %Xh (%r)",
- EFI_INVALID_PARAMETER,
- EFI_INVALID_PARAMETER)
- );
-
- EfiReleaseLock (&Private->Lock);
- return EFI_INVALID_PARAMETER;
- }
-
- if (HardwareAddrPtr == NULL) {
- HardwareAddrPtr = &Mac;
- }
-
- ZeroMem (HardwareAddrPtr, Private->SimpleNetwork->Mode->HwAddressSize);
-
- if (GetHwAddr (Private, ProtocolAddrPtr, HardwareAddrPtr)) {
- DEBUG (
- (EFI_D_INFO,
- "\nBcArp() Exit #2 %Xh (%r)",
- EFI_SUCCESS,
- EFI_SUCCESS)
- );
-
- EfiReleaseLock (&Private->Lock);
- return EFI_SUCCESS;
- }
-
- StatCode = DoArp (Private, ProtocolAddrPtr, HardwareAddrPtr);
-
- DEBUG ((EFI_D_INFO, "\nBcArp() Exit #3 %Xh (%r)", StatCode, StatCode));
-
- EfiReleaseLock (&Private->Lock);
- return StatCode;
-}
-
-/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
-EFI_STATUS
-DoArp (
- IN PXE_BASECODE_DEVICE *Private,
- IN EFI_IP_ADDRESS *ProtocolAddrPtr,
- OUT EFI_MAC_ADDRESS *HardwareAddrPtr
- )
-/*++
-Routine description:
- Internal ARP implementation.
-
-Parameters:
- Private := Pointer to PxeBc interface
- ProtocolAddrPtr := Pointer to IP address to find
- HardwareAddrPtr := Pointer to MAC address found
-
-Returns:
- EFI_SUCCESS := MAC address found
- other := MAC address could not be found
---*/
-{
- EFI_STATUS StatCode;
- EFI_EVENT TimeoutEvent;
- UINTN HeaderSize;
- UINTN BufferSize;
- UINT16 Protocol;
-
- DEBUG ((EFI_D_INFO, "\nDoArp()"));
-
- //
- //
- //
- StatCode = SendRequest (Private, ProtocolAddrPtr, HardwareAddrPtr);
-
- if (EFI_ERROR (StatCode)) {
- DEBUG ((EFI_D_INFO, "\nDoArp() Exit #1 %Xh (%r)", StatCode, StatCode));
- return StatCode;
- }
- //
- //
- //
- StatCode = gBS->CreateEvent (
- EVT_TIMER,
- TPL_CALLBACK,
- NULL,
- NULL,
- &TimeoutEvent
- );
-
- if (EFI_ERROR (StatCode)) {
- return StatCode;
- }
-
- StatCode = gBS->SetTimer (
- TimeoutEvent,
- TimerRelative,
- ARP_REQUEST_TIMEOUT_MS * 10000
- );
-
- if (EFI_ERROR (StatCode)) {
- gBS->CloseEvent (TimeoutEvent);
- return StatCode;
- }
- //
- //
- //
- for (;;) {
- StatCode = WaitForReceive (
- Private,
- EFI_PXE_BASE_CODE_FUNCTION_ARP,
- TimeoutEvent,
- &HeaderSize,
- &BufferSize,
- &Protocol
- );
-
- if (EFI_ERROR (StatCode)) {
- break;
- }
-
- if (Protocol != PXE_PROTOCOL_ETHERNET_ARP) {
- continue;
- }
-
- HandleArpReceive (
- Private,
- (ARP_PACKET *) (Private->ReceiveBufferPtr + HeaderSize),
- Private->ReceiveBufferPtr
- );
-
- if (GetHwAddr (Private, ProtocolAddrPtr, HardwareAddrPtr)) {
- break;
- }
- }
-
- DEBUG (
- (EFI_D_INFO,
- "\nDoArp() Exit #2 %Xh, (%r)",
- StatCode,
- StatCode)
- );
-
- gBS->CloseEvent (TimeoutEvent);
-
- return StatCode;
-}
-
-/* eof - pxe_bc_arp.c */
|