mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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352 lines
11 KiB
C
352 lines
11 KiB
C
/** @file
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Implementation of transmitting a packet.
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Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "Snp.h"
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/**
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Call UNDI to create the meadia header for the given data buffer.
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@param Snp Pointer to SNP driver structure.
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@param MacHeaderPtr Address where the media header will be filled in.
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@param HeaderSize Size of the memory at MacHeaderPtr.
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@param Buffer Data buffer pointer.
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@param BufferSize Size of data in the Buffer
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@param DestAddr Address of the destination mac address buffer.
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@param SrcAddr Address of the source mac address buffer.
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@param ProtocolPtr Address of the protocol type.
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@retval EFI_SUCCESS Successfully completed the undi call.
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@retval Other Error return from undi call.
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**/
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EFI_STATUS
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PxeFillHeader (
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SNP_DRIVER *Snp,
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VOID *MacHeaderPtr,
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UINTN HeaderSize,
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VOID *Buffer,
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UINTN BufferSize,
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EFI_MAC_ADDRESS *DestAddr,
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EFI_MAC_ADDRESS *SrcAddr,
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UINT16 *ProtocolPtr
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)
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{
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PXE_CPB_FILL_HEADER_FRAGMENTED *Cpb;
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Cpb = Snp->Cpb;
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if (SrcAddr != NULL) {
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CopyMem (
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(VOID *)Cpb->SrcAddr,
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(VOID *)SrcAddr,
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Snp->Mode.HwAddressSize
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);
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} else {
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CopyMem (
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(VOID *)Cpb->SrcAddr,
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(VOID *)&(Snp->Mode.CurrentAddress),
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Snp->Mode.HwAddressSize
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);
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}
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CopyMem (
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(VOID *)Cpb->DestAddr,
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(VOID *)DestAddr,
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Snp->Mode.HwAddressSize
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);
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//
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// we need to do the byte swapping
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//
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Cpb->Protocol = (UINT16)PXE_SWAP_UINT16 (*ProtocolPtr);
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Cpb->PacketLen = (UINT32)(BufferSize);
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Cpb->MediaHeaderLen = (UINT16)HeaderSize;
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Cpb->FragCnt = 2;
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Cpb->reserved = 0;
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Cpb->FragDesc[0].FragAddr = (UINT64)(UINTN)MacHeaderPtr;
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Cpb->FragDesc[0].FragLen = (UINT32)HeaderSize;
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Cpb->FragDesc[1].FragAddr = (UINT64)(UINTN)Buffer;
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Cpb->FragDesc[1].FragLen = (UINT32)BufferSize;
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Cpb->FragDesc[0].reserved = Cpb->FragDesc[1].reserved = 0;
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Snp->Cdb.OpCode = PXE_OPCODE_FILL_HEADER;
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Snp->Cdb.OpFlags = PXE_OPFLAGS_FILL_HEADER_FRAGMENTED;
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Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;
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Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;
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Snp->Cdb.CPBsize = (UINT16)sizeof (PXE_CPB_FILL_HEADER_FRAGMENTED);
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Snp->Cdb.CPBaddr = (UINT64)(UINTN)Cpb;
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Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
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Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
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Snp->Cdb.IFnum = Snp->IfNum;
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Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
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//
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// Issue UNDI command and check result.
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//
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DEBUG ((DEBUG_NET, "\nSnp->undi.fill_header() "));
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(*Snp->IssueUndi32Command)((UINT64)(UINTN)&Snp->Cdb);
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switch (Snp->Cdb.StatCode) {
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case PXE_STATCODE_SUCCESS:
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return EFI_SUCCESS;
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case PXE_STATCODE_INVALID_PARAMETER:
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DEBUG (
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(DEBUG_ERROR,
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"\nSnp->undi.fill_header() %xh:%xh\n",
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Snp->Cdb.StatFlags,
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Snp->Cdb.StatCode)
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);
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return EFI_INVALID_PARAMETER;
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default:
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DEBUG (
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(DEBUG_ERROR,
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"\nSnp->undi.fill_header() %xh:%xh\n",
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Snp->Cdb.StatFlags,
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Snp->Cdb.StatCode)
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);
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return EFI_DEVICE_ERROR;
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}
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}
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/**
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This routine calls undi to transmit the given data buffer
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@param Snp pointer to SNP driver structure
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@param Buffer data buffer pointer
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@param BufferSize Size of data in the Buffer
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@retval EFI_SUCCESS if successfully completed the undi call
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@retval Other error return from undi call.
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**/
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EFI_STATUS
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PxeTransmit (
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SNP_DRIVER *Snp,
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VOID *Buffer,
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UINTN BufferSize
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)
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{
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PXE_CPB_TRANSMIT *Cpb;
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EFI_STATUS Status;
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Cpb = Snp->Cpb;
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Cpb->FrameAddr = (UINT64)(UINTN)Buffer;
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Cpb->DataLen = (UINT32)BufferSize;
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Cpb->MediaheaderLen = 0;
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Cpb->reserved = 0;
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Snp->Cdb.OpFlags = PXE_OPFLAGS_TRANSMIT_WHOLE;
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Snp->Cdb.CPBsize = (UINT16)sizeof (PXE_CPB_TRANSMIT);
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Snp->Cdb.CPBaddr = (UINT64)(UINTN)Cpb;
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Snp->Cdb.OpCode = PXE_OPCODE_TRANSMIT;
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Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;
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Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;
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Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
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Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
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Snp->Cdb.IFnum = Snp->IfNum;
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Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
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//
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// Issue UNDI command and check result.
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//
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DEBUG ((DEBUG_NET, "\nSnp->undi.transmit() "));
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DEBUG ((DEBUG_NET, "\nSnp->Cdb.OpCode == %x", Snp->Cdb.OpCode));
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DEBUG ((DEBUG_NET, "\nSnp->Cdb.CPBaddr == %LX", Snp->Cdb.CPBaddr));
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DEBUG ((DEBUG_NET, "\nSnp->Cdb.DBaddr == %LX", Snp->Cdb.DBaddr));
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DEBUG ((DEBUG_NET, "\nCpb->FrameAddr == %LX\n", Cpb->FrameAddr));
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(*Snp->IssueUndi32Command)((UINT64)(UINTN)&Snp->Cdb);
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DEBUG ((DEBUG_NET, "\nexit Snp->undi.transmit() "));
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//
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// we will unmap the buffers in get_status call, not here
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//
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switch (Snp->Cdb.StatCode) {
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case PXE_STATCODE_SUCCESS:
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return EFI_SUCCESS;
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case PXE_STATCODE_BUFFER_FULL:
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case PXE_STATCODE_QUEUE_FULL:
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case PXE_STATCODE_BUSY:
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Status = EFI_NOT_READY;
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DEBUG (
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(DEBUG_NET,
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"\nSnp->undi.transmit() %xh:%xh\n",
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Snp->Cdb.StatFlags,
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Snp->Cdb.StatCode)
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);
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break;
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default:
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DEBUG (
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(DEBUG_ERROR,
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"\nSnp->undi.transmit() %xh:%xh\n",
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Snp->Cdb.StatFlags,
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Snp->Cdb.StatCode)
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);
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Status = EFI_DEVICE_ERROR;
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}
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return Status;
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}
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/**
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Places a packet in the transmit queue of a network interface.
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This function places the packet specified by Header and Buffer on the transmit
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queue. If HeaderSize is nonzero and HeaderSize is not equal to
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This->Mode->MediaHeaderSize, then EFI_INVALID_PARAMETER will be returned. If
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BufferSize is less than This->Mode->MediaHeaderSize, then EFI_BUFFER_TOO_SMALL
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will be returned. If Buffer is NULL, then EFI_INVALID_PARAMETER will be
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returned. If HeaderSize is nonzero and DestAddr or Protocol is NULL, then
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EFI_INVALID_PARAMETER will be returned. If the transmit engine of the network
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interface is busy, then EFI_NOT_READY will be returned. If this packet can be
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accepted by the transmit engine of the network interface, the packet contents
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specified by Buffer will be placed on the transmit queue of the network
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interface, and EFI_SUCCESS will be returned. GetStatus() can be used to
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determine when the packet has actually been transmitted. The contents of the
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Buffer must not be modified until the packet has actually been transmitted.
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The Transmit() function performs nonblocking I/O. A caller who wants to perform
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blocking I/O, should call Transmit(), and then GetStatus() until the
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transmitted buffer shows up in the recycled transmit buffer.
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If the driver has not been initialized, EFI_DEVICE_ERROR will be returned.
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@param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
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@param HeaderSize The size, in bytes, of the media header to be filled in by the
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Transmit() function. If HeaderSize is nonzero, then it must
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be equal to This->Mode->MediaHeaderSize and the DestAddr and
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Protocol parameters must not be NULL.
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@param BufferSize The size, in bytes, of the entire packet (media header and
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data) to be transmitted through the network interface.
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@param Buffer A pointer to the packet (media header followed by data) to be
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transmitted. This parameter cannot be NULL. If HeaderSize is
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zero, then the media header in Buffer must already be filled
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in by the caller. If HeaderSize is nonzero, then the media
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header will be filled in by the Transmit() function.
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@param SrcAddr The source HW MAC address. If HeaderSize is zero, then this
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parameter is ignored. If HeaderSize is nonzero and SrcAddr
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is NULL, then This->Mode->CurrentAddress is used for the
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source HW MAC address.
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@param DestAddr The destination HW MAC address. If HeaderSize is zero, then
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this parameter is ignored.
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@param Protocol The type of header to build. If HeaderSize is zero, then this
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parameter is ignored. See RFC 1700, section "Ether Types,"
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for examples.
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@retval EFI_SUCCESS The packet was placed on the transmit queue.
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@retval EFI_NOT_STARTED The network interface has not been started.
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@retval EFI_NOT_READY The network interface is too busy to accept this
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transmit request.
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@retval EFI_BUFFER_TOO_SMALL The BufferSize parameter is too small.
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@retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported
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value.
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@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
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@retval EFI_UNSUPPORTED This function is not supported by the network interface.
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**/
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EFI_STATUS
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EFIAPI
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SnpUndi32Transmit (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN UINTN HeaderSize,
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IN UINTN BufferSize,
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IN VOID *Buffer,
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IN EFI_MAC_ADDRESS *SrcAddr OPTIONAL,
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IN EFI_MAC_ADDRESS *DestAddr OPTIONAL,
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IN UINT16 *Protocol OPTIONAL
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)
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{
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SNP_DRIVER *Snp;
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EFI_STATUS Status;
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EFI_TPL OldTpl;
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if (This == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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if (Snp == NULL) {
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return EFI_DEVICE_ERROR;
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}
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switch (Snp->Mode.State) {
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case EfiSimpleNetworkInitialized:
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break;
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case EfiSimpleNetworkStopped:
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Status = EFI_NOT_STARTED;
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goto ON_EXIT;
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default:
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Status = EFI_DEVICE_ERROR;
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goto ON_EXIT;
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}
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if (Buffer == NULL) {
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Status = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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if (BufferSize < Snp->Mode.MediaHeaderSize) {
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Status = EFI_BUFFER_TOO_SMALL;
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goto ON_EXIT;
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}
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//
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// if the HeaderSize is non-zero, we need to fill up the header and for that
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// we need the destination address and the protocol
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//
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if (HeaderSize != 0) {
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if ((HeaderSize != Snp->Mode.MediaHeaderSize) || (DestAddr == 0) || (Protocol == 0)) {
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Status = EFI_INVALID_PARAMETER;
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goto ON_EXIT;
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}
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Status = PxeFillHeader (
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Snp,
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Buffer,
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HeaderSize,
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(UINT8 *)Buffer + HeaderSize,
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BufferSize - HeaderSize,
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DestAddr,
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SrcAddr,
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Protocol
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);
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if (EFI_ERROR (Status)) {
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goto ON_EXIT;
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}
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}
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Status = PxeTransmit (Snp, Buffer, BufferSize);
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ON_EXIT:
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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