diff options
Diffstat (limited to 'UnixPkg/UnixSnpDxe/UnixSnp.c')
| -rw-r--r-- | UnixPkg/UnixSnpDxe/UnixSnp.c | 1791 |
1 files changed, 0 insertions, 1791 deletions
diff --git a/UnixPkg/UnixSnpDxe/UnixSnp.c b/UnixPkg/UnixSnpDxe/UnixSnp.c deleted file mode 100644 index b910041911..0000000000 --- a/UnixPkg/UnixSnpDxe/UnixSnp.c +++ /dev/null @@ -1,1791 +0,0 @@ -/** @file
-
- Copyright (c) 2010, Apple, Inc. All rights reserved.<BR>
-
- 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:
-
- UnixSnp.c
-
-Abstract:
-
--**/
-
-#include <Library/PrintLib.h>
-
-#include "UnixSnp.h"
-
-EFI_DRIVER_BINDING_PROTOCOL gUnixSnpDriverBinding =
-{
- UnixSnpDriverBindingSupported,
- UnixSnpDriverBindingStart,
- UnixSnpDriverBindingStop,
- 0xA,
- NULL,
- NULL
-};
-
-/**
- Changes the state of a network interface from "stopped" to "started".
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpStart(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This
- );
-
-/**
- Changes the state of a network interface from "started" to "stopped".
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpStop(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This
- );
-
-/**
- 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 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 Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpInitialize(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN UINTN ExtraRxBufferSize OPTIONAL,
- IN UINTN ExtraTxBufferSize OPTIONAL
- );
-
-/**
- Resets a network adapter and re-initializes it with the parameters that were
- provided in the previous call to Initialize().
-
- @param This Protocol instance pointer.
- @param ExtendedVerification Indicates that the driver may perform a more
- exhaustive verification operation of the device
- during reset.
-
- @retval EFI_SUCCESS Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpReset(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN ExtendedVerification
- );
-
-/**
- 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 Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpShutdown(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This
- );
-
-/**
- Manages the multicast receive filters of a network interface.
-
- @param This Protocol instance pointer.
- @param EnableBits A bit mask of receive filters to enable on the network interface.
- @param DisableBits 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 McastFilterCount Number of multicast HW MAC addresses in the new
- MCastFilter list. This value must be less than or equal to
- the MCastFilterCnt field of EFI_SIMPLE_NETWORK_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_DEVICE_ERROR The command could not be sent to the network interface.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpReceiveFilters(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN UINT32 EnableBits,
- IN UINT32 DisableBits,
- IN BOOLEAN ResetMcastFilter,
- IN UINTN McastFilterCount OPTIONAL,
- IN EFI_MAC_ADDRESS* McastFilter OPTIONAL
- );
-
-/**
- Modifies or resets the current station address, if supported.
-
- @param This Protocol instance pointer.
- @param Reset Flag used to reset the station address to the network interfaces
- permanent address.
- @param NewMacAddr New station address to be used for the network interface.
-
- @retval EFI_UNSUPPORTED Not supported yet.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpStationAddress(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN Reset,
- IN EFI_MAC_ADDRESS* NewMacAddr OPTIONAL
- );
-
-/**
- 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_UNSUPPORTED Not supported yet.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpStatistics(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN Reset,
- IN OUT UINTN* StatisticsSize OPTIONAL,
- OUT EFI_NETWORK_STATISTICS* StatisticsTable OPTIONAL
- );
-
-/**
- Converts a multicast IP address to a multicast HW MAC address.
-
- @param This 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_UNSUPPORTED Not supported yet.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpMcastIptoMac(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN Ipv6,
- IN EFI_IP_ADDRESS* Ip,
- OUT EFI_MAC_ADDRESS* Mac
- );
-
-/**
- Performs read and write operations on the NVRAM device attached to a
- network interface.
-
- @param This Protocol instance pointer.
- @param ReadOrWrite 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_UNSUPPORTED Not supported yet.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpNvdata(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN ReadOrWrite,
- IN UINTN Offset,
- IN UINTN BufferSize,
- IN OUT VOID* Buffer
- );
-
-/**
- Reads the current interrupt status and recycled transmit buffer status from
- a network interface.
-
- @param This 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 TxBuffer 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 Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpGetStatus(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- OUT UINT32* InterruptStatus,
- OUT VOID** TxBuffer
- );
-
-/**
- Places a packet in the transmit queue of a network interface.
-
- @param This 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_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_ACCESS_DENIED Error acquire global lock for operation.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpTransmit(
- IN EFI_SIMPLE_NETWORK_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
- );
-
-/**
- Receives a packet from a network interface.
-
- @param This 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 BuffSize 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 SourceAddr The source HW MAC address. If this parameter is NULL, the
- HW MAC source address will not be extracted from the media
- header.
- @param DestinationAddr 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_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_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_ACCESS_DENIED Error acquire global lock for operation.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpReceive(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- OUT UINTN* HeaderSize OPTIONAL,
- IN OUT UINTN* BuffSize,
- OUT VOID* Buffer,
- OUT EFI_MAC_ADDRESS* SourceAddr OPTIONAL,
- OUT EFI_MAC_ADDRESS* DestinationAddr OPTIONAL,
- OUT UINT16* Protocol OPTIONAL
- );
-
-VOID
-EFIAPI
-UnixSnpWaitForPacketNotify(
- IN EFI_EVENT Event,
- IN VOID* Private
- );
-
-//
-// 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;
-} EthernetHeader;
-
-UNIX_SNP_PRIVATE_DATA gUnixSnpPrivateTemplate =
-{
- UNIX_SNP_PRIVATE_DATA_SIGNATURE, // Signature
- NULL, // UnixThunk
- NULL, // DeviceHandle
- NULL, // DevicePath
- { 0 }, // MacAddress
- NULL, // InterfaceName
- 0, // ReadBufferSize
- NULL, // ReadBuffer
- NULL, // CurrentReadPointer
- NULL, // EndReadPointer
- 0, // BpfFd
- { // Snp
- EFI_SIMPLE_NETWORK_PROTOCOL_REVISION, // Revision
- UnixSnpStart, // Start
- UnixSnpStop, // Stop
- UnixSnpInitialize, // Initialize
- UnixSnpReset, // Reset
- UnixSnpShutdown, // Shutdown
- UnixSnpReceiveFilters, // ReceiveFilters
- UnixSnpStationAddress, // StationAddress
- UnixSnpStatistics, // Statistics
- UnixSnpMcastIptoMac, // MCastIpToMac
- UnixSnpNvdata, // NvData
- UnixSnpGetStatus, // GetStatus
- UnixSnpTransmit, // Transmit
- UnixSnpReceive, // Receive
- NULL, // WaitForPacket
- NULL // Mode
- },
- { // Mode
- EfiSimpleNetworkStopped, // State
- NET_ETHER_ADDR_LEN, // HwAddressSize
- NET_ETHER_HEADER_SIZE, // MediaHeaderSize
- 1500, // MaxPacketSize
- 0, // NvRamSize
- 0, // NvRamAccessSize
- 0, // ReceiveFilterMask
- 0, // ReceiveFilterSetting
- MAX_MCAST_FILTER_CNT, // MaxMCastFilterCount
- 0, // MCastFilterCount
- {
- 0
- }, // MCastFilter
- {
- 0
- }, // CurrentAddress
- {
- 0
- }, // BroadcastAddress
- {
- 0
- }, // PermanentAddress
- NET_IFTYPE_ETHERNET, // IfType
- FALSE, // MacAddressChangeable
- FALSE, // MultipleTxSupported
- FALSE, // MediaPresentSupported
- TRUE // MediaPresent
- }
-};
-
-STATIC EFI_STATUS
-GetInterfaceMacAddr(
- IN UNIX_SNP_PRIVATE_DATA* Private,
- IN EFI_UNIX_IO_PROTOCOL* UnixIo
- )
-{
- struct ifaddrs* IfAddrs;
- struct ifaddrs* If;
- struct sockaddr_dl* IfSdl;
- EFI_STATUS Status;
- INTN Result;
-
- Result = UnixIo->UnixThunk->GetIfAddrs( &IfAddrs );
- if ( Result != 0 )
- {
- return( EFI_UNSUPPORTED );
- }
-
- //
- // Convert the interface name to ASCII so we can find it.
- //
- Private->InterfaceName = AllocateZeroPool( StrLen( UnixIo->EnvString ) );
-
- if ( !Private->InterfaceName )
- {
- Status = EFI_OUT_OF_RESOURCES;
- goto Exit;
- }
-
- UnicodeStrToAsciiStr( UnixIo->EnvString, Private->InterfaceName );
-
- 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:
- ( VOID ) UnixIo->UnixThunk->FreeIfAddrs( IfAddrs );
-
- return( Status );
-}
-
-
-STATIC EFI_STATUS
-OpenBpfFileDescriptor(
- IN UNIX_SNP_PRIVATE_DATA* Private,
- OUT INTN* Fd
- )
-{
- CHAR8 BfpDeviceName[ 256 ];
- INTN Index;
- EFI_STATUS Status = EFI_OUT_OF_RESOURCES;
- INTN Result;
-
- //
- // 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++ )
- {
- AsciiSPrint( BfpDeviceName, sizeof( BfpDeviceName ), "/dev/bpf%d", Index );
-
- *Fd = Private->UnixThunk->Open( BfpDeviceName, O_RDWR, 0 );
-
- if ( *Fd >= 0 )
- {
- Status = EFI_SUCCESS;
- break;
- }
-
- Result = Private->UnixThunk->GetErrno();
- if ( Result == EACCES )
- {
- DEBUG( ( EFI_D_ERROR, "Permissions on '%a' are incorrect. Fix with 'sudo chmod 666 %a'.\n",
- BfpDeviceName, BfpDeviceName ) );
- }
- if ( Result != EBUSY )
- {
- break;
- }
- }
-
- return( Status );
-}
-
-
-/**
- Test to see if this driver supports ControllerHandle. This service
- is called by the EFI boot service ConnectController(). In
- order to make drivers as small as possible, there are a few calling
- restrictions for this service. ConnectController() must
- follow these calling restrictions. If any other agent wishes to call
- Supported() it must also follow these calling restrictions.
-
- @param This Protocol instance pointer.
- @param ControllerHandle Handle of device to test
- @param RemainingDevicePath Optional parameter use to pick a specific child
- device to start.
-
- @retval EFI_SUCCESS This driver supports this device
- @retval EFI_UNSUPPORTED This driver does not support this device
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpDriverBindingSupported(
- IN EFI_DRIVER_BINDING_PROTOCOL* This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL* RemainingDevicePath OPTIONAL
- )
-{
- EFI_STATUS Status;
- EFI_UNIX_IO_PROTOCOL* UnixIo;
-
- //
- // Open the I/O abstraction needed to perform the supported test.
- //
- Status = gBS->OpenProtocol(
- ControllerHandle,
- &gEfiUnixIoProtocolGuid,
- ( VOID ** ) &UnixIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
-
- if ( EFI_ERROR( Status ) )
- {
- return( Status );
- }
-
- //
- // Validate GUID
- //
- Status = EFI_UNSUPPORTED;
- if ( CompareGuid( UnixIo->TypeGuid, &gEfiUnixNetworkGuid ) )
- {
- Status = EFI_SUCCESS;
- }
-
- //
- // Close the I/O abstraction used to perform the supported test.
- //
- gBS->CloseProtocol(
- ControllerHandle,
- &gEfiUnixIoProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
-
- return( Status );
-}
-
-
-/**
- Start this driver on ControllerHandle. This service is called by the
- EFI boot service ConnectController(). In order to make
- drivers as small as possible, there are a few calling restrictions for
- this service. ConnectController() must follow these
- calling restrictions. If any other agent wishes to call Start() it
- must also follow these calling restrictions.
-
- @param This Protocol instance pointer.
- @param ControllerHandle Handle of device to bind driver to
- @param RemainingDevicePath Optional parameter use to pick a specific child
- device to start.
-
- @retval EFI_SUCCESS Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpDriverBindingStart(
- IN EFI_DRIVER_BINDING_PROTOCOL* This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_DEVICE_PATH_PROTOCOL* RemainingDevicePath OPTIONAL
- )
-{
- MAC_ADDR_DEVICE_PATH Node;
- EFI_DEVICE_PATH_PROTOCOL* ParentDevicePath = NULL;
- EFI_UNIX_IO_PROTOCOL* UnixIo;
- UNIX_SNP_PRIVATE_DATA* Private = NULL;
- EFI_STATUS Status;
- BOOLEAN CreateDevice;
-
- //
- // Grab the protocols we need.
- //
- Status = gBS->OpenProtocol(
- ControllerHandle,
- &gEfiDevicePathProtocolGuid,
- ( VOID ** ) &ParentDevicePath,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if ( EFI_ERROR( Status ) )
- {
- goto ErrorExit;
- }
-
- //
- // Open the I/O abstraction needed to perform the supported test.
- //
- Status = gBS->OpenProtocol(
- ControllerHandle,
- &gEfiUnixIoProtocolGuid,
- ( VOID ** ) &UnixIo,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_BY_DRIVER
- );
- if ( EFI_ERROR( Status ) )
- {
- goto ErrorExit;
- }
-
- //
- // Validate GUID
- //
- if ( !CompareGuid( UnixIo->TypeGuid, &gEfiUnixNetworkGuid ) )
- {
- Status = EFI_UNSUPPORTED;
- goto ErrorExit;
- }
-
- CreateDevice = TRUE;
- if ( ( RemainingDevicePath != NULL ) && IsDevicePathEnd( RemainingDevicePath ) )
- {
- CreateDevice = FALSE;
- }
-
- if ( CreateDevice )
- {
- //
- // Allocate the private data.
- //
- Private = AllocateCopyPool( sizeof( UNIX_SNP_PRIVATE_DATA ), &gUnixSnpPrivateTemplate );
- if ( Private == NULL )
- {
- Status = EFI_OUT_OF_RESOURCES;
- goto ErrorExit;
- }
-
- Status = GetInterfaceMacAddr( Private, UnixIo );
- if ( EFI_ERROR( Status ) )
- {
- goto ErrorExit;
- }
-
- Private->UnixThunk = UnixIo->UnixThunk;
-
- Private->Snp.Mode = &Private->Mode;
-
- //
- // Set the broadcast address.
- //
- SetMem( &Private->Mode.BroadcastAddress, sizeof( EFI_MAC_ADDRESS ), 0xFF );
-
- CopyMem( &Private->Mode.CurrentAddress, &Private->MacAddress, sizeof( EFI_MAC_ADDRESS ) );
- CopyMem( &Private->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.
- //
- Private->Mode.CurrentAddress.Addr[ NET_ETHER_ADDR_LEN - 1 ]++;
-
- //
- // Build the device path by appending the MAC node to the ParentDevicePath
- // from the UnixIo handle.
- //
- ZeroMem( &Node, sizeof( MAC_ADDR_DEVICE_PATH ) );
-
- Node.Header.Type = MESSAGING_DEVICE_PATH;
- Node.Header.SubType = MSG_MAC_ADDR_DP;
- Node.IfType = Private->Mode.IfType;
-
- SetDevicePathNodeLength( ( EFI_DEVICE_PATH_PROTOCOL * ) &Node, sizeof( MAC_ADDR_DEVICE_PATH ) );
-
- CopyMem( &Node.MacAddress, &Private->Mode.CurrentAddress, sizeof( EFI_MAC_ADDRESS ) );
-
- //
- // Build the device path by appending the MAC node to the ParentDevicePath from the UnixIo handle.
- //
- Private->DevicePath = AppendDevicePathNode( ParentDevicePath, ( EFI_DEVICE_PATH_PROTOCOL * ) &Node );
- if ( Private->DevicePath == NULL )
- {
- Status = EFI_OUT_OF_RESOURCES;
- goto ErrorExit;
- }
-
- Status = gBS->InstallMultipleProtocolInterfaces(
- &Private->DeviceHandle,
- &gEfiSimpleNetworkProtocolGuid,
- &Private->Snp,
- &gEfiDevicePathProtocolGuid,
- Private->DevicePath,
- NULL
- );
- if ( EFI_ERROR( Status ) )
- {
- goto ErrorExit;
- }
-
- Status = gBS->OpenProtocol(
- ControllerHandle,
- &gEfiUnixIoProtocolGuid,
- ( VOID ** ) &UnixIo,
- This->DriverBindingHandle,
- Private->DeviceHandle,
- EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
- );
- if ( EFI_ERROR( Status ) )
- {
- goto ErrorExit;
- }
- }
- return( Status );
-
-ErrorExit:
- if ( Private->InterfaceName != NULL )
- {
- FreePool( Private->InterfaceName );
- Private->InterfaceName = NULL;
- }
- if ( Private != NULL )
- {
- FreePool( Private );
- }
- if ( ParentDevicePath != NULL )
- {
- gBS->CloseProtocol(
- ControllerHandle,
- &gEfiDevicePathProtocolGuid,
- This->DriverBindingHandle,
- ControllerHandle
- );
- }
-
- return( Status );
-}
-
-/**
- Stop this driver on ControllerHandle. This service is called by the
- EFI boot service DisconnectController(). In order to
- make drivers as small as possible, there are a few calling
- restrictions for this service. DisconnectController()
- must follow these calling restrictions. If any other agent wishes
- to call Stop() it must also follow these calling restrictions.
-
- @param This Protocol instance pointer.
- @param ControllerHandle Handle of device to stop driver on
- @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
- children is zero stop the entire bus driver.
- @param ChildHandleBuffer List of Child Handles to Stop.
-
- @retval EFI_SUCCESS Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpDriverBindingStop(
- IN EFI_DRIVER_BINDING_PROTOCOL* This,
- IN EFI_HANDLE ControllerHandle,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE* ChildHandleBuffer
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private = NULL;
- EFI_SIMPLE_NETWORK_PROTOCOL* Snp;
- EFI_STATUS Status;
-
- //
- // Get our context back.
- //
- Status = gBS->OpenProtocol(
- ControllerHandle,
- &gEfiSimpleNetworkProtocolGuid,
- ( VOID ** ) &Snp,
- This->DriverBindingHandle,
- ControllerHandle,
- EFI_OPEN_PROTOCOL_GET_PROTOCOL
- );
- if ( EFI_ERROR( Status ) )
- {
- return( EFI_UNSUPPORTED );
- }
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( Snp );
-
- Status = gBS->CloseProtocol(
- ControllerHandle,
- &gEfiUnixIoProtocolGuid,
- This->DriverBindingHandle,
- Private->DeviceHandle
- );
-
- Status = gBS->UninstallMultipleProtocolInterfaces(
- Private->DeviceHandle,
- &gEfiSimpleNetworkProtocolGuid,
- &Private->Snp,
- &gEfiDevicePathProtocolGuid,
- Private->DevicePath,
- NULL
- );
-
- FreePool( Private->InterfaceName );
- FreePool( Private->DevicePath );
- FreePool( Private );
-
- return( EFI_SUCCESS );
-}
-
-
-/**
- Changes the state of a network interface from "stopped" to "started".
-
- @param This Protocol instance pointer.
-
- @retval EFI_SUCCESS Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpStart(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This
- )
-{
- STATIC struct bpf_insn FilterInstructionTemplate[] =
- {
- // Load 4 bytes from the destination MAC address.
- BPF_STMT( BPF_LD + BPF_W + BPF_ABS, OFFSET_OF( EthernetHeader, 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( EthernetHeader, 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( EthernetHeader, 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( EthernetHeader, 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 )
- };
- struct ifreq BoundIf;
- struct bpf_program BpfProgram;
- struct bpf_insn* FilterProgram;
- UNIX_SNP_PRIVATE_DATA* Private;
- EFI_STATUS Status;
- UINT32 Temp32;
- INTN Fd;
- INTN Result;
- INTN Value;
- UINT16 Temp16;
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( This );
-
- switch ( Private->Snp.Mode->State )
- {
- case EfiSimpleNetworkStopped:
- break;
-
- case EfiSimpleNetworkStarted:
- case EfiSimpleNetworkInitialized:
- return( EFI_ALREADY_STARTED );
- break;
-
- default:
- return( EFI_DEVICE_ERROR );
- break;
- }
-
- if ( Private->BpfFd == 0 )
- {
- Status = OpenBpfFileDescriptor( Private, &Fd );
-
- if ( EFI_ERROR( Status ) )
- {
- goto ErrorExit;
- }
-
- Private->BpfFd = Fd;
-
- //
- // Associate our interface with this BPF file descriptor.
- //
- AsciiStrCpy( BoundIf.ifr_name, Private->InterfaceName );
- Result = Private->UnixThunk->IoCtl( Private->BpfFd, BIOCSETIF, &BoundIf );
-
- if ( Result < 0 )
- {
- goto DeviceErrorExit;
- }
-
- //
- // Enable immediate mode and find out the buffer size.
- //
- Value = 1;
- Result = Private->UnixThunk->IoCtl( Private->BpfFd, BIOCIMMEDIATE, &Value );
-
- if ( Result < 0 )
- {
- goto DeviceErrorExit;
- }
-
- //
- // Enable non-blocking I/O.
- //
-
- Value = Private->UnixThunk->Fcntl( Private->BpfFd, F_GETFL, 0 );
-
- if ( Value == -1 )
- {
- goto DeviceErrorExit;
- }
-
- Value |= O_NONBLOCK;
-
- Result = Private->UnixThunk->Fcntl( Private->BpfFd, F_SETFL, (void *) Value );
-
- if ( Result == -1 )
- {
- goto DeviceErrorExit;
- }
-
- //
- // Disable "header complete" flag. This means the supplied source MAC address is
- // what goes on the wire.
- //
- Value = 1;
- Result = Private->UnixThunk->IoCtl( Private->BpfFd, BIOCSHDRCMPLT, &Value );
-
- if ( Result < 0 )
- {
- goto DeviceErrorExit;
- }
-
- Result = Private->UnixThunk->IoCtl( Private->BpfFd, BIOCGBLEN, &Value );
-
- if ( Result < 0 )
- {
- goto DeviceErrorExit;
- }
-
- //
- // Allocate read buffer.
- //
- Private->ReadBufferSize = Value;
- Private->ReadBuffer = AllocateZeroPool( Private->ReadBufferSize );
- if ( Private->ReadBuffer == NULL )
- {
- Status = EFI_OUT_OF_RESOURCES;
- goto ErrorExit;
- }
-
- Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer;
-
- //
- // Install our packet filter: successful reads should only produce broadcast or unitcast
- // packets directed to our fake MAC address.
- //
- FilterProgram = AllocateCopyPool( sizeof( FilterInstructionTemplate ), &FilterInstructionTemplate );
- if ( FilterProgram == NULL )
- {
- goto ErrorExit;
- }
-
- //
- // 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( FilterInstructionTemplate ) / sizeof( struct bpf_insn );
- BpfProgram.bf_insns = FilterProgram;
-
- Result = Private->UnixThunk->IoCtl( Private->BpfFd, BIOCSETF, &BpfProgram );
-
- if ( Result < 0 )
- {
- goto DeviceErrorExit;
- }
-
- FreePool( FilterProgram );
-
- //
- // Enable promiscuous mode.
- //
-
- Result = Private->UnixThunk->IoCtl( Private->BpfFd, BIOCPROMISC, 0 );
-
- if ( Result < 0 )
- {
- goto DeviceErrorExit;
- }
-
-
- Private->Snp.Mode->State = EfiSimpleNetworkStarted;
- }
-
- return( Status );
-
-DeviceErrorExit:
- Status = EFI_DEVICE_ERROR;
-ErrorExit:
- if ( Private->ReadBuffer != NULL )
- {
- FreePool( 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 Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpStop(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private = EFI_SUCCESS;
- EFI_STATUS Status;
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( This );
-
- switch ( Private->Snp.Mode->State )
- {
- case EfiSimpleNetworkStarted:
- break;
-
- case EfiSimpleNetworkStopped:
- return( EFI_NOT_STARTED );
- break;
-
- default:
- return( EFI_DEVICE_ERROR );
- break;
- }
-
- if ( Private->BpfFd != 0 )
- {
- Private->UnixThunk->Close( Private->BpfFd );
- Private->BpfFd = 0;
- }
-
- if ( Private->ReadBuffer != NULL )
- {
- FreePool( Private->ReadBuffer );
- Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer = NULL;
- }
-
- Private->Snp.Mode->State = EfiSimpleNetworkStopped;
-
- return( Status );
-}
-
-
-/**
- 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 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 Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpInitialize(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN UINTN ExtraRxBufferSize OPTIONAL,
- IN UINTN ExtraTxBufferSize OPTIONAL
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private = EFI_SUCCESS;
- EFI_STATUS Status;
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( This );
-
- switch ( Private->Snp.Mode->State )
- {
- case EfiSimpleNetworkStarted:
- break;
-
- case EfiSimpleNetworkStopped:
- return( EFI_NOT_STARTED );
- break;
-
- default:
- return( EFI_DEVICE_ERROR );
- break;
- }
-
-#if 0
- Status = gBS->CreateEvent(
- EVT_NOTIFY_WAIT,
- TPL_NOTIFY,
- UnixSnpWaitForPacketNotify,
- Private,
- &Private->Snp.WaitForPacket
- );
-#endif
-
- if ( !EFI_ERROR( Status ) )
- {
- Private->Mode.MCastFilterCount = 0;
- Private->Mode.ReceiveFilterSetting = 0;
- ZeroMem( Private->Mode.MCastFilter, sizeof( Private->Mode.MCastFilter ) );
-
- Private->Snp.Mode->State = EfiSimpleNetworkInitialized;
- }
-
- return( Status );
-}
-
-/**
- Resets a network adapter and re-initializes it with the parameters that were
- provided in the previous call to Initialize().
-
- @param This Protocol instance pointer.
- @param ExtendedVerification Indicates that the driver may perform a more
- exhaustive verification operation of the device
- during reset.
-
- @retval EFI_SUCCESS Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpReset(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN ExtendedVerification
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private;
- EFI_STATUS Success = EFI_SUCCESS;
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( This );
-
- switch ( Private->Snp.Mode->State )
- {
- case EfiSimpleNetworkInitialized:
- break;
-
- case EfiSimpleNetworkStopped:
- return( EFI_NOT_STARTED );
- break;
-
- default:
- return( EFI_DEVICE_ERROR );
- break;
- }
-
- return( 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 Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpShutdown(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private;
- EFI_STATUS Success = EFI_SUCCESS;
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( This );
-
- switch ( Private->Snp.Mode->State )
- {
- case EfiSimpleNetworkInitialized:
- break;
-
- case EfiSimpleNetworkStopped:
- return( EFI_NOT_STARTED );
- break;
-
- default:
- return( EFI_DEVICE_ERROR );
- break;
- }
-
- Private->Snp.Mode->State = EfiSimpleNetworkStarted;
-
- Private->Mode.ReceiveFilterSetting = 0;
- Private->Mode.MCastFilterCount = 0;
- ZeroMem( Private->Mode.MCastFilter, sizeof( Private->Mode.MCastFilter ) );
-
- if ( Private->Snp.WaitForPacket != NULL )
- {
- gBS->CloseEvent( Private->Snp.WaitForPacket );
- Private->Snp.WaitForPacket = NULL;
- }
-
- if ( Private->BpfFd != 0 )
- {
- Private->UnixThunk->Close( Private->BpfFd );
- Private->BpfFd = 0;
- }
-
- if ( Private->ReadBuffer != NULL )
- {
- FreePool( Private->ReadBuffer );
- Private->CurrentReadPointer = Private->EndReadPointer = Private->ReadBuffer = NULL;
- }
-
- return( Success );
-}
-
-/**
- Manages the multicast receive filters of a network interface.
-
- @param This Protocol instance pointer.
- @param EnableBits A bit mask of receive filters to enable on the network interface.
- @param DisableBits 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 McastFilterCount Number of multicast HW MAC addresses in the new
- MCastFilter list. This value must be less than or equal to
- the MCastFilterCnt field of EFI_SIMPLE_NETWORK_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_DEVICE_ERROR The command could not be sent to the network interface.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpReceiveFilters(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN UINT32 EnableBits,
- IN UINT32 DisableBits,
- IN BOOLEAN ResetMcastFilter,
- IN UINTN McastFilterCount OPTIONAL,
- IN EFI_MAC_ADDRESS* McastFilter OPTIONAL
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private;
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( This );
-
-// ReturnValue = GlobalData->NtNetUtilityTable.SetReceiveFilter (
-// Instance->InterfaceInfo.InterfaceIndex,
-// EnableBits,
-// McastFilterCount,
-// McastFilter
-// );
-
- // For now, just succeed...
- return( EFI_SUCCESS );
-}
-
-/**
- Modifies or resets the current station address, if supported.
-
- @param This Protocol instance pointer.
- @param Reset Flag used to reset the station address to the network interfaces
- permanent address.
- @param NewMacAddr New station address to be used for the network interface.
-
- @retval EFI_UNSUPPORTED Not supported yet.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpStationAddress(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN Reset,
- IN EFI_MAC_ADDRESS* NewMacAddr OPTIONAL
- )
-{
- 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_UNSUPPORTED Not supported yet.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpStatistics(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN Reset,
- IN OUT UINTN* StatisticsSize OPTIONAL,
- OUT EFI_NETWORK_STATISTICS* StatisticsTable OPTIONAL
- )
-{
- return( EFI_UNSUPPORTED );
-}
-
-/**
- Converts a multicast IP address to a multicast HW MAC address.
-
- @param This 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_UNSUPPORTED Not supported yet.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpMcastIptoMac(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN Ipv6,
- IN EFI_IP_ADDRESS* Ip,
- OUT EFI_MAC_ADDRESS* Mac
- )
-{
- return( EFI_UNSUPPORTED );
-}
-
-
-/**
- Performs read and write operations on the NVRAM device attached to a
- network interface.
-
- @param This Protocol instance pointer.
- @param ReadOrWrite 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_UNSUPPORTED Not supported yet.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpNvdata(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- IN BOOLEAN ReadOrWrite,
- IN UINTN Offset,
- IN UINTN BufferSize,
- IN OUT VOID* Buffer
- )
-{
- return( EFI_UNSUPPORTED );
-}
-
-
-/**
- Reads the current interrupt status and recycled transmit buffer status from
- a network interface.
-
- @param This 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 TxBuffer 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 Always succeeds.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpGetStatus(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- OUT UINT32* InterruptStatus,
- OUT VOID** TxBuffer
- )
-{
- if ( TxBuffer != NULL )
- {
- *( ( UINT8 ** ) TxBuffer ) = ( 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 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_DEVICE_ERROR The command could not be sent to the network interface.
- @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
- @retval EFI_NOT_STARTED The network interface has not been started.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpTransmit(
- IN EFI_SIMPLE_NETWORK_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
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private;
- EthernetHeader* EnetHeader;
- INTN Result;
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( This );
-
- if ( This->Mode->State < EfiSimpleNetworkStarted )
- {
- return( EFI_NOT_STARTED );
- }
-
- if ( HeaderSize != 0 )
- {
- if ( ( DestAddr == NULL ) || ( Protocol == NULL ) || ( HeaderSize != This->Mode->MediaHeaderSize ) )
- {
- return( EFI_INVALID_PARAMETER );
- }
-
- if ( SrcAddr == NULL )
- {
- SrcAddr = &This->Mode->CurrentAddress;
- }
-
- EnetHeader = ( EthernetHeader * ) Buffer;
-
- CopyMem( EnetHeader->DstAddr, DestAddr, NET_ETHER_ADDR_LEN );
- CopyMem( EnetHeader->SrcAddr, SrcAddr, NET_ETHER_ADDR_LEN );
-
- EnetHeader->Type = HTONS( *Protocol );
- }
-
- Result = Private->UnixThunk->Write( Private->BpfFd, Buffer, BufferSize );
-
- if ( Result < 0 )
- {
- return( EFI_DEVICE_ERROR );
- }
- else
- {
- return( EFI_SUCCESS );
- }
-}
-
-/**
- Receives a packet from a network interface.
-
- @param This 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 BuffSize 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 SourceAddr The source HW MAC address. If this parameter is NULL, the
- HW MAC source address will not be extracted from the media
- header.
- @param DestinationAddr 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_READY The network interface is too busy to accept this transmit
- request.
- @retval EFI_NOT_STARTED The network interface has not been started.
- @retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small.
- @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
-
-**/
-EFI_STATUS
-EFIAPI
-UnixSnpReceive(
- IN EFI_SIMPLE_NETWORK_PROTOCOL* This,
- OUT UINTN* HeaderSize OPTIONAL,
- IN OUT UINTN* BuffSize,
- OUT VOID* Buffer,
- OUT EFI_MAC_ADDRESS* SourceAddr OPTIONAL,
- OUT EFI_MAC_ADDRESS* DestinationAddr OPTIONAL,
- OUT UINT16* Protocol OPTIONAL
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private;
- struct bpf_hdr* BpfHeader;
- EthernetHeader* EnetHeader;
- EFI_STATUS Status = EFI_SUCCESS;
- INTN Result;
-
- if ( This->Mode->State < EfiSimpleNetworkStarted )
- {
- return( EFI_NOT_STARTED );
- }
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( This );
-
- //
- // Do we have any remaining packets from the previous read?
- //
- if ( Private->CurrentReadPointer >= Private->EndReadPointer )
- {
- Result = Private->UnixThunk->Read( Private->BpfFd, Private->ReadBuffer, Private->ReadBufferSize );
-
- if ( Result < 0 )
- {
- Result = Private->UnixThunk->GetErrno();
-
- //
- // EAGAIN means that there's no I/O outstanding against this file descriptor.
- //
- if ( Result == EAGAIN )
- {
- return( EFI_NOT_READY );
- }
- else
- {
- return( 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 > *BuffSize )
- {
- *BuffSize = BpfHeader->bh_caplen;
- return( EFI_BUFFER_TOO_SMALL );
- }
-
- CopyMem( Buffer, EnetHeader, BpfHeader->bh_caplen );
- *BuffSize = BpfHeader->bh_caplen;
-
- if ( HeaderSize != NULL )
- {
- *HeaderSize = sizeof( EthernetHeader );
- }
-
- if ( DestinationAddr != NULL )
- {
- ZeroMem( DestinationAddr, sizeof( EFI_MAC_ADDRESS ) );
- CopyMem( DestinationAddr, EnetHeader->DstAddr, NET_ETHER_ADDR_LEN );
- }
-
- if ( SourceAddr != NULL )
- {
- ZeroMem( SourceAddr, sizeof( EFI_MAC_ADDRESS ) );
- CopyMem( SourceAddr, EnetHeader->SrcAddr, NET_ETHER_ADDR_LEN );
- }
-
- if ( Protocol != NULL )
- {
- *Protocol = NTOHS( EnetHeader->Type );
- }
-
- Private->CurrentReadPointer += BPF_WORDALIGN( BpfHeader->bh_hdrlen + BpfHeader->bh_caplen );
-
- return( Status );
-}
-
-
-VOID
-EFIAPI
-UnixSnpWaitForPacketNotify(
- IN EFI_EVENT Event,
- IN VOID* Context
- )
-{
- UNIX_SNP_PRIVATE_DATA* Private;
-
- Private = UNIX_SNP_PRIVATE_DATA_FROM_SNP_THIS( Context );
-
- if ( Private->Snp.Mode->State < EfiSimpleNetworkStarted )
- {
- return;
- }
-}
-
-
-/**
- This is the declaration of an EFI image entry point. This entry point is
- the same for UEFI Applications, UEFI OS Loaders, and UEFI Drivers including
- both device drivers and bus drivers.
-
- @param ImageHandle The firmware allocated handle for the UEFI image.
- @param SystemTable A pointer to the EFI System Table.
-
- @retval EFI_SUCCESS The operation completed successfully.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
-
-**/
-EFI_STATUS
-InitializeUnixSnpDriver(
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE* SystemTable
- )
-{
- EFI_STATUS Status;
-
- //
- // Install the Driver Protocols
- //
-
- Status = EfiLibInstallDriverBindingComponentName2(
- ImageHandle,
- SystemTable,
- &gUnixSnpDriverBinding,
- ImageHandle,
- &gUnixSnpDriverComponentName,
- &gUnixSnpDriverComponentName2
- );
-
- return( Status );
-}
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