diff options
Diffstat (limited to 'EmulatorPkg/Unix/Host/BerkeleyPacketFilter.c')
| -rw-r--r-- | EmulatorPkg/Unix/Host/BerkeleyPacketFilter.c | 1111 |
1 files changed, 0 insertions, 1111 deletions
diff --git a/EmulatorPkg/Unix/Host/BerkeleyPacketFilter.c b/EmulatorPkg/Unix/Host/BerkeleyPacketFilter.c deleted file mode 100644 index 4ba27c2a6a..0000000000 --- a/EmulatorPkg/Unix/Host/BerkeleyPacketFilter.c +++ /dev/null @@ -1,1111 +0,0 @@ -/**@file
- Berkeley Packet Filter implementation of the EMU_SNP_PROTOCOL that allows the
- emulator to get on real networks.
-
- Tested on Mac OS X.
-
-Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.<BR>
-Portitions copyright (c) 2011, Apple Inc. 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.
-
-**/
-
-
-#include "Host.h"
-
-#ifdef __APPLE__
-
-
-#include <Library/NetLib.h>
-
-
-#define EMU_SNP_PRIVATE_SIGNATURE SIGNATURE_32('E', 'M', 's', 'n')
-typedef struct {
- UINTN Signature;
-
- EMU_IO_THUNK_PROTOCOL *Thunk;
- EMU_SNP_PROTOCOL EmuSnp;
- EFI_SIMPLE_NETWORK_MODE *Mode;
-
- int BpfFd;
- char *InterfaceName;
- EFI_MAC_ADDRESS MacAddress;
- u_int ReadBufferSize;
- VOID *ReadBuffer;
-
- //
- // Two walking pointers to manage the multiple packets that can be returned
- // in a single read.
- //
- VOID *CurrentReadPointer;
- VOID *EndReadPointer;
-
- UINT32 ReceivedPackets;
- UINT32 DroppedPackets;
-
-} EMU_SNP_PRIVATE;
-
-#define EMU_SNP_PRIVATE_DATA_FROM_THIS(a) \
- CR(a, EMU_SNP_PRIVATE, EmuSnp, EMU_SNP_PRIVATE_SIGNATURE)
-
-
-//
-// Strange, but there doesn't appear to be any structure for the Ethernet header in edk2...
-//
-
-typedef struct {
- UINT8 DstAddr[NET_ETHER_ADDR_LEN];
- UINT8 SrcAddr[NET_ETHER_ADDR_LEN];
- UINT16 Type;
-} ETHERNET_HEADER;
-
-/**
- Register storage for SNP Mode.
-
- @param This Protocol instance pointer.
- @param Mode SimpleNetworkProtocol Mode structure passed into driver.
-
- @retval EFI_SUCCESS The network interface was started.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
-
-**/
-EFI_STATUS
-EmuSnpCreateMapping (
- IN EMU_SNP_PROTOCOL *This,
- IN EFI_SIMPLE_NETWORK_MODE *Mode
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- Private->Mode = Mode;
-
- //
- // Set the broadcast address.
- //
- SetMem (&Mode->BroadcastAddress, sizeof (EFI_MAC_ADDRESS), 0xFF);
-
- CopyMem (&Mode->CurrentAddress, &Private->MacAddress, sizeof (EFI_MAC_ADDRESS));
- CopyMem (&Mode->PermanentAddress, &Private->MacAddress, sizeof (EFI_MAC_ADDRESS));
-
- //
- // Since the fake SNP is based on a real NIC, to avoid conflict with the host NIC
- // network stack, we use a different MAC address.
- // So just change the last byte of the MAC address for the real NIC.
- //
- Mode->CurrentAddress.Addr[NET_ETHER_ADDR_LEN - 1]++;
-
- return EFI_SUCCESS;
-}
-
-
-static struct bpf_insn mFilterInstructionTemplate[] = {
- // Load 4 bytes from the destination MAC address.
- BPF_STMT (BPF_LD + BPF_W + BPF_ABS, OFFSET_OF (ETHERNET_HEADER, DstAddr[0])),
-
- // Compare to first 4 bytes of fake MAC address.
- BPF_JUMP (BPF_JMP + BPF_JEQ + BPF_K, 0x12345678, 0, 3 ),
-
- // Load remaining 2 bytes from the destination MAC address.
- BPF_STMT (BPF_LD + BPF_H + BPF_ABS, OFFSET_OF( ETHERNET_HEADER, DstAddr[4])),
-
- // Compare to remaining 2 bytes of fake MAC address.
- BPF_JUMP (BPF_JMP + BPF_JEQ + BPF_K, 0x9ABC, 5, 0 ),
-
- // Load 4 bytes from the destination MAC address.
- BPF_STMT (BPF_LD + BPF_W + BPF_ABS, OFFSET_OF (ETHERNET_HEADER, DstAddr[0])),
-
- // Compare to first 4 bytes of broadcast MAC address.
- BPF_JUMP (BPF_JMP + BPF_JEQ + BPF_K, 0xFFFFFFFF, 0, 2),
-
- // Load remaining 2 bytes from the destination MAC address.
- BPF_STMT (BPF_LD + BPF_H + BPF_ABS, OFFSET_OF( ETHERNET_HEADER, DstAddr[4])),
-
- // Compare to remaining 2 bytes of broadcast MAC address.
- BPF_JUMP (BPF_JMP + BPF_JEQ + BPF_K, 0xFFFF, 1, 0),
-
- // Reject packet.
- BPF_STMT (BPF_RET + BPF_K, 0),
-
- // Receive entire packet.
- BPF_STMT (BPF_RET + BPF_K, -1)
-};
-
-
-EFI_STATUS
-OpenBpfFileDescriptor (
- IN EMU_SNP_PRIVATE *Private,
- OUT int *Fd
- )
-{
- char BfpDeviceName[256];
- int Index;
-
- //
- // Open a Berkeley Packet Filter device. This must be done as root, so this is probably
- // the place which is most likely to fail...
- //
- for (Index = 0; TRUE; Index++ ) {
- snprintf (BfpDeviceName, sizeof (BfpDeviceName), "/dev/bpf%d", Index);
-
- *Fd = open (BfpDeviceName, O_RDWR, 0);
- if ( *Fd >= 0 ) {
- return EFI_SUCCESS;
- }
-
- if (errno == EACCES) {
- printf (
- "SNP: Permissions on '%s' are incorrect. Fix with 'sudo chmod 666 %s'.\n",
- BfpDeviceName,
- BfpDeviceName
- );
- }
-
- if (errno != EBUSY) {
- break;
- }
- }
-
- return EFI_OUT_OF_RESOURCES;
-}
-
-
-/**
- Changes the state of a network interface from "stopped" to "started".
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS The network interface was started.
- @retval EFI_ALREADY_STARTED The network interface is already in the started state.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpStart (
- IN EMU_SNP_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- EMU_SNP_PRIVATE *Private;
- struct ifreq BoundIf;
- struct bpf_program BpfProgram;
- struct bpf_insn *FilterProgram;
- u_int Value;
- u_int ReadBufferSize;
- UINT16 Temp16;
- UINT32 Temp32;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- switch (Private->Mode->State) {
- case EfiSimpleNetworkStopped:
- break;
-
- case EfiSimpleNetworkStarted:
- case EfiSimpleNetworkInitialized:
- return EFI_ALREADY_STARTED;
- break;
-
- default:
- return EFI_DEVICE_ERROR;
- break;
- }
-
- Status = EFI_SUCCESS;
- if (Private->BpfFd == 0) {
- Status = OpenBpfFileDescriptor (Private, &Private->BpfFd);
- if (EFI_ERROR (Status)) {
- goto DeviceErrorExit;
- }
-
- //
- // Get the read buffer size.
- //
- if (ioctl (Private->BpfFd, BIOCGBLEN, &ReadBufferSize) < 0) {
- goto DeviceErrorExit;
- }
-
- //
- // Default value from BIOCGBLEN is usually too small, so use a much larger size, if necessary.
- //
- if (ReadBufferSize < FixedPcdGet32 (PcdNetworkPacketFilterSize)) {
- ReadBufferSize = FixedPcdGet32 (PcdNetworkPacketFilterSize);
- if (ioctl (Private->BpfFd, BIOCSBLEN, &ReadBufferSize) < 0) {
- goto DeviceErrorExit;
- }
- }
-
- //
- // Associate our interface with this BPF file descriptor.
- //
- AsciiStrCpy (BoundIf.ifr_name, Private->InterfaceName);
- if (ioctl (Private->BpfFd, BIOCSETIF, &BoundIf) < 0) {
- goto DeviceErrorExit;
- }
-
- //
- // Enable immediate mode.
- //
- Value = 1;
- if (ioctl (Private->BpfFd, BIOCIMMEDIATE, &Value) < 0) {
- goto DeviceErrorExit;
- }
-
- //
- // Enable non-blocking I/O.
- //
- if (fcntl (Private->BpfFd, F_GETFL, 0) == -1) {
- goto DeviceErrorExit;
- }
-
- Value |= O_NONBLOCK;
-
- if (fcntl (Private->BpfFd, F_SETFL, Value) == -1) {
- goto DeviceErrorExit;
- }
-
- //
- // Disable "header complete" flag. This means the supplied source MAC address is
- // what goes on the wire.
- //
- Value = 1;
- if (ioctl (Private->BpfFd, BIOCSHDRCMPLT, &Value) < 0) {
- goto DeviceErrorExit;
- }
-
- //
- // Allocate read buffer.
- //
- Private->ReadBufferSize = ReadBufferSize;
- Private->ReadBuffer = malloc (Private->ReadBufferSize);
- if (Private->ReadBuffer == NULL) {
- goto ErrorExit;
- }
-
- Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer;
-
- //
- // Install our packet filter: successful reads should only produce broadcast or unicast
- // packets directed to our fake MAC address.
- //
- FilterProgram = malloc (sizeof (mFilterInstructionTemplate)) ;
- if ( FilterProgram == NULL ) {
- goto ErrorExit;
- }
-
- CopyMem (FilterProgram, &mFilterInstructionTemplate, sizeof (mFilterInstructionTemplate));
-
- //
- // Insert out fake MAC address into the filter. The data has to be host endian.
- //
- CopyMem (&Temp32, &Private->Mode->CurrentAddress.Addr[0], sizeof (UINT32));
- FilterProgram[1].k = NTOHL (Temp32);
- CopyMem (&Temp16, &Private->Mode->CurrentAddress.Addr[4], sizeof (UINT16));
- FilterProgram[3].k = NTOHS (Temp16);
-
- BpfProgram.bf_len = sizeof (mFilterInstructionTemplate) / sizeof (struct bpf_insn);
- BpfProgram.bf_insns = FilterProgram;
-
- if (ioctl (Private->BpfFd, BIOCSETF, &BpfProgram) < 0) {
- goto DeviceErrorExit;
- }
-
- free (FilterProgram);
-
- //
- // Enable promiscuous mode.
- //
- if (ioctl (Private->BpfFd, BIOCPROMISC, 0) < 0) {
- goto DeviceErrorExit;
- }
-
-
- Private->Mode->State = EfiSimpleNetworkStarted;
- }
-
- return Status;
-
-DeviceErrorExit:
- Status = EFI_DEVICE_ERROR;
-ErrorExit:
- if (Private->ReadBuffer != NULL) {
- free (Private->ReadBuffer);
- Private->ReadBuffer = NULL;
- }
- return Status;
-}
-
-
-/**
- Changes the state of a network interface from "started" to "stopped".
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS The network interface was stopped.
- @retval EFI_ALREADY_STARTED The network interface is already in the stopped state.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpStop (
- IN EMU_SNP_PROTOCOL *This
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- switch ( Private->Mode->State ) {
- case EfiSimpleNetworkStarted:
- break;
-
- case EfiSimpleNetworkStopped:
- return EFI_NOT_STARTED;
- break;
-
- default:
- return EFI_DEVICE_ERROR;
- break;
- }
-
- if (Private->BpfFd != 0) {
- close (Private->BpfFd);
- Private->BpfFd = 0;
- }
-
- if (Private->ReadBuffer != NULL) {
- free (Private->ReadBuffer );
- Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer = NULL;
- }
-
- Private->Mode->State = EfiSimpleNetworkStopped;
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Resets a network adapter and allocates the transmit and receive buffers
- required by the network interface; optionally, also requests allocation
- of additional transmit and receive buffers.
-
- @param This The protocol instance pointer.
- @param ExtraRxBufferSize The size, in bytes, of the extra receive buffer space
- that the driver should allocate for the network interface.
- Some network interfaces will not be able to use the extra
- buffer, and the caller will not know if it is actually
- being used.
- @param ExtraTxBufferSize The size, in bytes, of the extra transmit buffer space
- that the driver should allocate for the network interface.
- Some network interfaces will not be able to use the extra
- buffer, and the caller will not know if it is actually
- being used.
-
- @retval EFI_SUCCESS The network interface was initialized.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_OUT_OF_RESOURCES There was not enough memory for the transmit and
- receive buffers.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpInitialize (
- IN EMU_SNP_PROTOCOL *This,
- IN UINTN ExtraRxBufferSize OPTIONAL,
- IN UINTN ExtraTxBufferSize OPTIONAL
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- switch ( Private->Mode->State ) {
- case EfiSimpleNetworkStarted:
- break;
-
- case EfiSimpleNetworkStopped:
- return EFI_NOT_STARTED;
- break;
-
- default:
- return EFI_DEVICE_ERROR;
- break;
- }
-
- Private->Mode->MCastFilterCount = 0;
- Private->Mode->ReceiveFilterSetting = 0;
- ZeroMem (Private->Mode->MCastFilter, sizeof (Private->Mode->MCastFilter));
-
- Private->Mode->State = EfiSimpleNetworkInitialized;
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Resets a network adapter and re-initializes it with the parameters that were
- provided in the previous call to Initialize().
-
- @param This The protocol instance pointer.
- @param ExtendedVerification Indicates that the driver may perform a more
- exhaustive verification operation of the device
- during reset.
-
- @retval EFI_SUCCESS The network interface was reset.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpReset (
- IN EMU_SNP_PROTOCOL *This,
- IN BOOLEAN ExtendedVerification
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- switch ( Private->Mode->State ) {
- case EfiSimpleNetworkInitialized:
- break;
-
- case EfiSimpleNetworkStopped:
- return EFI_NOT_STARTED;
- break;
-
- default:
- return EFI_DEVICE_ERROR;
- break;
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Resets a network adapter and leaves it in a state that is safe for
- another driver to initialize.
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS The network interface was shutdown.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpShutdown (
- IN EMU_SNP_PROTOCOL *This
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- switch ( Private->Mode->State ) {
- case EfiSimpleNetworkInitialized:
- break;
-
- case EfiSimpleNetworkStopped:
- return EFI_NOT_STARTED;
- break;
-
- default:
- return EFI_DEVICE_ERROR;
- break;
- }
-
- Private->Mode->State = EfiSimpleNetworkStarted;
-
- Private->Mode->ReceiveFilterSetting = 0;
- Private->Mode->MCastFilterCount = 0;
- ZeroMem (Private->Mode->MCastFilter, sizeof (Private->Mode->MCastFilter));
-
- if (Private->BpfFd != 0) {
- close (Private->BpfFd);
- Private->BpfFd = 0;
- }
-
- if (Private->ReadBuffer != NULL) {
- free (Private->ReadBuffer);
- Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer = NULL;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Manages the multicast receive filters of a network interface.
-
- @param This The protocol instance pointer.
- @param Enable A bit mask of receive filters to enable on the network interface.
- @param Disable A bit mask of receive filters to disable on the network interface.
- @param ResetMCastFilter Set to TRUE to reset the contents of the multicast receive
- filters on the network interface to their default values.
- @param McastFilterCnt Number of multicast HW MAC addresses in the new
- MCastFilter list. This value must be less than or equal to
- the MCastFilterCnt field of EMU_SNP_MODE. This
- field is optional if ResetMCastFilter is TRUE.
- @param MCastFilter A pointer to a list of new multicast receive filter HW MAC
- addresses. This list will replace any existing multicast
- HW MAC address list. This field is optional if
- ResetMCastFilter is TRUE.
-
- @retval EFI_SUCCESS The multicast receive filter list was updated.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpReceiveFilters (
- IN EMU_SNP_PROTOCOL *This,
- IN UINT32 Enable,
- IN UINT32 Disable,
- IN BOOLEAN ResetMCastFilter,
- IN UINTN MCastFilterCnt OPTIONAL,
- IN EFI_MAC_ADDRESS *MCastFilter OPTIONAL
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- // For now, just succeed...
- return EFI_SUCCESS;
-}
-
-
-/**
- Modifies or resets the current station address, if supported.
-
- @param This The protocol instance pointer.
- @param Reset Flag used to reset the station address to the network interfaces
- permanent address.
- @param New The new station address to be used for the network interface.
-
- @retval EFI_SUCCESS The network interfaces station address was updated.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpStationAddress (
- IN EMU_SNP_PROTOCOL *This,
- IN BOOLEAN Reset,
- IN EFI_MAC_ADDRESS *New OPTIONAL
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- return EFI_UNSUPPORTED;
-}
-
-
-/**
- Resets or collects the statistics on a network interface.
-
- @param This Protocol instance pointer.
- @param Reset Set to TRUE to reset the statistics for the network interface.
- @param StatisticsSize On input the size, in bytes, of StatisticsTable. On
- output the size, in bytes, of the resulting table of
- statistics.
- @param StatisticsTable A pointer to the EFI_NETWORK_STATISTICS structure that
- contains the statistics.
-
- @retval EFI_SUCCESS The statistics were collected from the network interface.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_BUFFER_TOO_SMALL The Statistics buffer was too small. The current buffer
- size needed to hold the statistics is returned in
- StatisticsSize.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpStatistics (
- IN EMU_SNP_PROTOCOL *This,
- IN BOOLEAN Reset,
- IN OUT UINTN *StatisticsSize OPTIONAL,
- OUT EFI_NETWORK_STATISTICS *StatisticsTable OPTIONAL
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- return EFI_UNSUPPORTED;
-}
-
-
-/**
- Converts a multicast IP address to a multicast HW MAC address.
-
- @param This The protocol instance pointer.
- @param IPv6 Set to TRUE if the multicast IP address is IPv6 [RFC 2460]. Set
- to FALSE if the multicast IP address is IPv4 [RFC 791].
- @param IP The multicast IP address that is to be converted to a multicast
- HW MAC address.
- @param MAC The multicast HW MAC address that is to be generated from IP.
-
- @retval EFI_SUCCESS The multicast IP address was mapped to the multicast
- HW MAC address.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_BUFFER_TOO_SMALL The Statistics buffer was too small. The current buffer
- size needed to hold the statistics is returned in
- StatisticsSize.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpMCastIpToMac (
- IN EMU_SNP_PROTOCOL *This,
- IN BOOLEAN IPv6,
- IN EFI_IP_ADDRESS *IP,
- OUT EFI_MAC_ADDRESS *MAC
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- return EFI_UNSUPPORTED;
-}
-
-
-/**
- Performs read and write operations on the NVRAM device attached to a
- network interface.
-
- @param This The protocol instance pointer.
- @param ReadWrite TRUE for read operations, FALSE for write operations.
- @param Offset Byte offset in the NVRAM device at which to start the read or
- write operation. This must be a multiple of NvRamAccessSize and
- less than NvRamSize.
- @param BufferSize The number of bytes to read or write from the NVRAM device.
- This must also be a multiple of NvramAccessSize.
- @param Buffer A pointer to the data buffer.
-
- @retval EFI_SUCCESS The NVRAM access was performed.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpNvData (
- IN EMU_SNP_PROTOCOL *This,
- IN BOOLEAN ReadWrite,
- IN UINTN Offset,
- IN UINTN BufferSize,
- IN OUT VOID *Buffer
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- return EFI_UNSUPPORTED;
-}
-
-/**
- Reads the current interrupt status and recycled transmit buffer status from
- a network interface.
-
- @param This The protocol instance pointer.
- @param InterruptStatus A pointer to the bit mask of the currently active interrupts
- If this is NULL, the interrupt status will not be read from
- the device. If this is not NULL, the interrupt status will
- be read from the device. When the interrupt status is read,
- it will also be cleared. Clearing the transmit interrupt
- does not empty the recycled transmit buffer array.
- @param TxBuf Recycled transmit buffer address. The network interface will
- not transmit if its internal recycled transmit buffer array
- is full. Reading the transmit buffer does not clear the
- transmit interrupt. If this is NULL, then the transmit buffer
- status will not be read. If there are no transmit buffers to
- recycle and TxBuf is not NULL, * TxBuf will be set to NULL.
-
- @retval EFI_SUCCESS The status of the network interface was retrieved.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpGetStatus (
- IN EMU_SNP_PROTOCOL *This,
- OUT UINT32 *InterruptStatus OPTIONAL,
- OUT VOID **TxBuf OPTIONAL
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- if (TxBuf != NULL) {
- *((UINT8 **)TxBuf) = (UINT8 *)1;
- }
-
- if ( InterruptStatus != NULL ) {
- *InterruptStatus = EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
- }
-
- return EFI_SUCCESS;
-}
-
-
-/**
- Places a packet in the transmit queue of a network interface.
-
- @param This The protocol instance pointer.
- @param HeaderSize The size, in bytes, of the media header to be filled in by
- the Transmit() function. If HeaderSize is non-zero, then it
- must be equal to This->Mode->MediaHeaderSize and the DestAddr
- and Protocol parameters must not be NULL.
- @param BufferSize The size, in bytes, of the entire packet (media header and
- data) to be transmitted through the network interface.
- @param Buffer A pointer to the packet (media header followed by data) to be
- transmitted. This parameter cannot be NULL. If HeaderSize is zero,
- then the media header in Buffer must already be filled in by the
- caller. If HeaderSize is non-zero, then the media header will be
- filled in by the Transmit() function.
- @param SrcAddr The source HW MAC address. If HeaderSize is zero, then this parameter
- is ignored. If HeaderSize is non-zero and SrcAddr is NULL, then
- This->Mode->CurrentAddress is used for the source HW MAC address.
- @param DestAddr The destination HW MAC address. If HeaderSize is zero, then this
- parameter is ignored.
- @param Protocol The type of header to build. If HeaderSize is zero, then this
- parameter is ignored. See RFC 1700, section "Ether Types", for
- examples.
-
- @retval EFI_SUCCESS The packet was placed on the transmit queue.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_NOT_READY The network interface is too busy to accept this transmit request.
- @retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpTransmit (
- IN EMU_SNP_PROTOCOL *This,
- IN UINTN HeaderSize,
- IN UINTN BufferSize,
- IN VOID *Buffer,
- IN EFI_MAC_ADDRESS *SrcAddr OPTIONAL,
- IN EFI_MAC_ADDRESS *DestAddr OPTIONAL,
- IN UINT16 *Protocol OPTIONAL
- )
-{
- EMU_SNP_PRIVATE *Private;
- ETHERNET_HEADER *EnetHeader;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- if (Private->Mode->State < EfiSimpleNetworkStarted) {
- return EFI_NOT_STARTED;
- }
-
- if ( HeaderSize != 0 ) {
- if ((DestAddr == NULL) || (Protocol == NULL) || (HeaderSize != Private->Mode->MediaHeaderSize)) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (SrcAddr == NULL) {
- SrcAddr = &Private->Mode->CurrentAddress;
- }
-
- EnetHeader = (ETHERNET_HEADER *) Buffer;
-
- CopyMem (EnetHeader->DstAddr, DestAddr, NET_ETHER_ADDR_LEN);
- CopyMem (EnetHeader->SrcAddr, SrcAddr, NET_ETHER_ADDR_LEN);
-
- EnetHeader->Type = HTONS(*Protocol);
- }
-
- if (write (Private->BpfFd, Buffer, BufferSize) < 0) {
- return EFI_DEVICE_ERROR;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Receives a packet from a network interface.
-
- @param This The protocol instance pointer.
- @param HeaderSize The size, in bytes, of the media header received on the network
- interface. If this parameter is NULL, then the media header size
- will not be returned.
- @param BufferSize On entry, the size, in bytes, of Buffer. On exit, the size, in
- bytes, of the packet that was received on the network interface.
- @param Buffer A pointer to the data buffer to receive both the media header and
- the data.
- @param SrcAddr The source HW MAC address. If this parameter is NULL, the
- HW MAC source address will not be extracted from the media
- header.
- @param DestAddr The destination HW MAC address. If this parameter is NULL,
- the HW MAC destination address will not be extracted from the
- media header.
- @param Protocol The media header type. If this parameter is NULL, then the
- protocol will not be extracted from the media header. See
- RFC 1700 section "Ether Types" for examples.
-
- @retval EFI_SUCCESS The received data was stored in Buffer, and BufferSize has
- been updated to the number of bytes received.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_NOT_READY The network interface is too busy to accept this transmit
- request.
- @retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_UNSUPPORTED This function is not supported by the network interface.
-
-**/
-EFI_STATUS
-EmuSnpReceive (
- IN EMU_SNP_PROTOCOL *This,
- OUT UINTN *HeaderSize OPTIONAL,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer,
- OUT EFI_MAC_ADDRESS *SrcAddr OPTIONAL,
- OUT EFI_MAC_ADDRESS *DestAddr OPTIONAL,
- OUT UINT16 *Protocol OPTIONAL
- )
-{
- EMU_SNP_PRIVATE *Private;
- struct bpf_hdr *BpfHeader;
- struct bpf_stat BpfStats;
- ETHERNET_HEADER *EnetHeader;
- ssize_t Result;
-
- Private = EMU_SNP_PRIVATE_DATA_FROM_THIS (This);
-
- if (Private->Mode->State < EfiSimpleNetworkStarted) {
- return EFI_NOT_STARTED;
- }
-
- ZeroMem (&BpfStats, sizeof( BpfStats));
-
- if (ioctl (Private->BpfFd, BIOCGSTATS, &BpfStats) == 0) {
- Private->ReceivedPackets += BpfStats.bs_recv;
- if (BpfStats.bs_drop > Private->DroppedPackets) {
- printf (
- "SNP: STATS: RCVD = %d DROPPED = %d. Probably need to increase BPF PcdNetworkPacketFilterSize?\n",
- BpfStats.bs_recv,
- BpfStats.bs_drop - Private->DroppedPackets
- );
- Private->DroppedPackets = BpfStats.bs_drop;
- }
- }
-
- //
- // Do we have any remaining packets from the previous read?
- //
- if (Private->CurrentReadPointer >= Private->EndReadPointer) {
- Result = read (Private->BpfFd, Private->ReadBuffer, Private->ReadBufferSize);
- if (Result < 0) {
- // EAGAIN means that there's no I/O outstanding against this file descriptor.
- return (errno == EAGAIN) ? EFI_NOT_READY : EFI_DEVICE_ERROR;
- }
-
- if (Result == 0) {
- return EFI_NOT_READY;
- }
-
- Private->CurrentReadPointer = Private->ReadBuffer;
- Private->EndReadPointer = Private->CurrentReadPointer + Result;
- }
-
- BpfHeader = Private->CurrentReadPointer;
- EnetHeader = Private->CurrentReadPointer + BpfHeader->bh_hdrlen;
-
- if (BpfHeader->bh_caplen > *BufferSize) {
- *BufferSize = BpfHeader->bh_caplen;
- return EFI_BUFFER_TOO_SMALL;
- }
-
- CopyMem (Buffer, EnetHeader, BpfHeader->bh_caplen);
- *BufferSize = BpfHeader->bh_caplen;
-
- if (HeaderSize != NULL) {
- *HeaderSize = sizeof (ETHERNET_HEADER);
- }
-
- if (DestAddr != NULL) {
- ZeroMem (DestAddr, sizeof (EFI_MAC_ADDRESS));
- CopyMem (DestAddr, EnetHeader->DstAddr, NET_ETHER_ADDR_LEN);
- }
-
- if (SrcAddr != NULL) {
- ZeroMem (SrcAddr, sizeof (EFI_MAC_ADDRESS));
- CopyMem (SrcAddr, EnetHeader->SrcAddr, NET_ETHER_ADDR_LEN);
- }
-
- if (Protocol != NULL) {
- *Protocol = NTOHS (EnetHeader->Type);
- }
-
- Private->CurrentReadPointer += BPF_WORDALIGN (BpfHeader->bh_hdrlen + BpfHeader->bh_caplen);
- return EFI_SUCCESS;
-}
-
-
-EMU_SNP_PROTOCOL gEmuSnpProtocol = {
- GasketSnpCreateMapping,
- GasketSnpStart,
- GasketSnpStop,
- GasketSnpInitialize,
- GasketSnpReset,
- GasketSnpShutdown,
- GasketSnpReceiveFilters,
- GasketSnpStationAddress,
- GasketSnpStatistics,
- GasketSnpMCastIpToMac,
- GasketSnpNvData,
- GasketSnpGetStatus,
- GasketSnpTransmit,
- GasketSnpReceive
-};
-
-EFI_STATUS
-GetInterfaceMacAddr (
- EMU_SNP_PRIVATE *Private
- )
-{
- EFI_STATUS Status;
- struct ifaddrs *IfAddrs;
- struct ifaddrs *If;
- struct sockaddr_dl *IfSdl;
-
- if (getifaddrs (&IfAddrs) != 0) {
- return EFI_UNSUPPORTED;
- }
-
- //
- // Convert the interface name to ASCII so we can find it.
- //
- Private->InterfaceName = malloc (StrSize (Private->Thunk->ConfigString));
- if (Private->InterfaceName == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Exit;
- }
-
- UnicodeStrToAsciiStr (Private->Thunk->ConfigString, Private->InterfaceName);
-
- Status = EFI_NOT_FOUND;
- If = IfAddrs;
- while (If != NULL) {
- IfSdl = (struct sockaddr_dl *)If->ifa_addr;
-
- if (IfSdl->sdl_family == AF_LINK) {
- if (!AsciiStrCmp( Private->InterfaceName, If->ifa_name)) {
- CopyMem (&Private->MacAddress, LLADDR (IfSdl), NET_ETHER_ADDR_LEN);
-
- Status = EFI_SUCCESS;
- break;
- }
- }
-
- If = If->ifa_next;
- }
-
-Exit:
- freeifaddrs (IfAddrs);
- return Status;
-}
-
-
-EFI_STATUS
-EmuSnpThunkOpen (
- IN EMU_IO_THUNK_PROTOCOL *This
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- if (This->Private != NULL) {
- return EFI_ALREADY_STARTED;
- }
-
- if (!CompareGuid (This->Protocol, &gEmuSnpProtocolGuid)) {
- return EFI_UNSUPPORTED;
- }
-
- Private = malloc (sizeof (EMU_SNP_PRIVATE));
- if (Private == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
-
- Private->Signature = EMU_SNP_PRIVATE_SIGNATURE;
- Private->Thunk = This;
- CopyMem (&Private->EmuSnp, &gEmuSnpProtocol, sizeof (gEmuSnpProtocol));
- GetInterfaceMacAddr (Private);
-
- This->Interface = &Private->EmuSnp;
- This->Private = Private;
- return EFI_SUCCESS;
-}
-
-
-EFI_STATUS
-EmuSnpThunkClose (
- IN EMU_IO_THUNK_PROTOCOL *This
- )
-{
- EMU_SNP_PRIVATE *Private;
-
- if (!CompareGuid (This->Protocol, &gEmuSnpProtocolGuid)) {
- return EFI_UNSUPPORTED;
- }
-
- Private = This->Private;
- free (Private);
-
- return EFI_SUCCESS;
-}
-
-
-
-EMU_IO_THUNK_PROTOCOL gSnpThunkIo = {
- &gEmuSnpProtocolGuid,
- NULL,
- NULL,
- 0,
- GasketSnpThunkOpen,
- GasketSnpThunkClose,
- NULL
-};
-
-#endif
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