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125 lines
4.6 KiB
C
125 lines
4.6 KiB
C
/** @file
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It is invoked when the PXE Base Code Protocol is about to transmit, has received,
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or is waiting to receive a packet.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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This Protocol is introduced in EFI Specification 1.10
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**/
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#ifndef _PXE_BASE_CODE_CALLBACK_H_
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#define _PXE_BASE_CODE_CALLBACK_H_
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///
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/// Call Back Definitions.
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///
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#define EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL_GUID \
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{ \
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0x245dca21, 0xfb7b, 0x11d3, {0x8f, 0x01, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b } \
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}
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///
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/// UEFI Revision Number Definition.
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///
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#define EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL_REVISION 0x00010000
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///
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/// EFI 1.1 Revision Number defintion.
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///
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#define EFI_PXE_BASE_CODE_CALLBACK_INTERFACE_REVISION \
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EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL_REVISION
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///
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/// UEFI Protocol name.
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///
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typedef struct _EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL;
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///
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/// EFI1.1 Protocol name.
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///
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typedef EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL EFI_PXE_BASE_CODE_CALLBACK;
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///
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/// Event type list for PXE Base Code Protocol function.
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///
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typedef enum {
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EFI_PXE_BASE_CODE_FUNCTION_FIRST,
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EFI_PXE_BASE_CODE_FUNCTION_DHCP,
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EFI_PXE_BASE_CODE_FUNCTION_DISCOVER,
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EFI_PXE_BASE_CODE_FUNCTION_MTFTP,
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EFI_PXE_BASE_CODE_FUNCTION_UDP_WRITE,
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EFI_PXE_BASE_CODE_FUNCTION_UDP_READ,
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EFI_PXE_BASE_CODE_FUNCTION_ARP,
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EFI_PXE_BASE_CODE_FUNCTION_IGMP,
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EFI_PXE_BASE_CODE_PXE_FUNCTION_LAST
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} EFI_PXE_BASE_CODE_FUNCTION;
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///
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/// Callback status type.
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///
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typedef enum {
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EFI_PXE_BASE_CODE_CALLBACK_STATUS_FIRST,
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EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE,
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EFI_PXE_BASE_CODE_CALLBACK_STATUS_ABORT,
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EFI_PXE_BASE_CODE_CALLBACK_STATUS_LAST
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} EFI_PXE_BASE_CODE_CALLBACK_STATUS;
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/**
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Callback function that is invoked when the PXE Base Code Protocol is about to transmit, has
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received, or is waiting to receive a packet.
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This function is invoked when the PXE Base Code Protocol is about to transmit, has received,
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or is waiting to receive a packet. Parameters Function and Received specify the type of event.
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Parameters PacketLen and Packet specify the packet that generated the event. If these fields
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are zero and NULL respectively, then this is a status update callback. If the operation specified
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by Function is to continue, then CALLBACK_STATUS_CONTINUE should be returned. If the operation
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specified by Function should be aborted, then CALLBACK_STATUS_ABORT should be returned. Due to
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the polling nature of UEFI device drivers, a callback function should not execute for more than 5 ms.
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The SetParameters() function must be called after a Callback Protocol is installed to enable the
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use of callbacks.
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@param This The pointer to the EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL instance.
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@param Function The PXE Base Code Protocol function that is waiting for an event.
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@param Received TRUE if the callback is being invoked due to a receive event. FALSE if
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the callback is being invoked due to a transmit event.
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@param PacketLen The length, in bytes, of Packet. This field will have a value of zero if
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this is a wait for receive event.
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@param Packet If Received is TRUE, a pointer to the packet that was just received;
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otherwise a pointer to the packet that is about to be transmitted.
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@retval EFI_PXE_BASE_CODE_CALLBACK_STATUS_CONTINUE if Function specifies a continue operation
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@retval EFI_PXE_BASE_CODE_CALLBACK_STATUS_ABORT if Function specifies an abort operation
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**/
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typedef
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EFI_PXE_BASE_CODE_CALLBACK_STATUS
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(EFIAPI *EFI_PXE_CALLBACK)(
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IN EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL *This,
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IN EFI_PXE_BASE_CODE_FUNCTION Function,
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IN BOOLEAN Received,
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IN UINT32 PacketLen,
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IN EFI_PXE_BASE_CODE_PACKET *Packet OPTIONAL
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);
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///
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/// Protocol that is invoked when the PXE Base Code Protocol is about
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/// to transmit, has received, or is waiting to receive a packet.
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///
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struct _EFI_PXE_BASE_CODE_CALLBACK_PROTOCOL {
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///
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/// The revision of the EFI_PXE_BASE_CODE_PROTOCOL. All future revisions must
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/// be backwards compatible. If a future version is not backwards compatible
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/// it is not the same GUID.
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///
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UINT64 Revision;
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EFI_PXE_CALLBACK Callback;
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};
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extern EFI_GUID gEfiPxeBaseCodeCallbackProtocolGuid;
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#endif
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