4cda7726e5
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6481 6f19259b-4bc3-4df7-8a09-765794883524
251 lines
7.2 KiB
C
251 lines
7.2 KiB
C
/** @file
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Implementation of reading the MAC address of a network adapter.
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Copyright (c) 2004 - 2007, Intel Corporation. <BR>
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All rights reserved. This program and the accompanying materials are licensed
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and made available under the terms and conditions of the BSD License which
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accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "Snp.h"
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/**
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this routine calls undi to read the MAC address of the NIC and updates the
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mode structure with the address.
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@param Snp pointer to snp driver structure.
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@retval EFI_SUCCESS the MAC address of the NIC is read successfully.
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@retval EFI_DEVICE_ERROR failed to read the MAC address of the NIC.
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**/
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EFI_STATUS
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PxeGetStnAddr (
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SNP_DRIVER *Snp
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)
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{
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PXE_DB_STATION_ADDRESS *Db;
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Db = Snp->Db;
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Snp->Cdb.OpCode = PXE_OPCODE_STATION_ADDRESS;
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Snp->Cdb.OpFlags = PXE_OPFLAGS_STATION_ADDRESS_READ;
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Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
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Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
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Snp->Cdb.DBsize = sizeof (PXE_DB_STATION_ADDRESS);
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Snp->Cdb.DBaddr = (UINT64)(UINTN) Db;
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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 ((EFI_D_NET, "\nsnp->undi.station_addr() "));
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(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
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if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
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DEBUG (
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(EFI_D_ERROR,
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"\nsnp->undi.station_addr() %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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// Set new station address in SNP->Mode structure and return success.
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//
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CopyMem (
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&(Snp->Mode.CurrentAddress),
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&Db->StationAddr,
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Snp->Mode.HwAddressSize
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);
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CopyMem (
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&Snp->Mode.BroadcastAddress,
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&Db->BroadcastAddr,
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Snp->Mode.HwAddressSize
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);
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CopyMem (
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&Snp->Mode.PermanentAddress,
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&Db->PermanentAddr,
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Snp->Mode.HwAddressSize
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);
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return EFI_SUCCESS;
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}
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/**
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this routine calls undi to set a new MAC address for the NIC,
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@param Snp pointer to Snp driver structure
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@param NewMacAddr pointer to a mac address to be set for the nic, if this is
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NULL then this routine resets the mac address to the NIC's
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original address.
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**/
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EFI_STATUS
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PxeSetStnAddr (
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SNP_DRIVER *Snp,
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EFI_MAC_ADDRESS *NewMacAddr
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)
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{
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PXE_CPB_STATION_ADDRESS *Cpb;
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PXE_DB_STATION_ADDRESS *Db;
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Cpb = Snp->Cpb;
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Db = Snp->Db;
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Snp->Cdb.OpCode = PXE_OPCODE_STATION_ADDRESS;
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if (NewMacAddr == NULL) {
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Snp->Cdb.OpFlags = PXE_OPFLAGS_STATION_ADDRESS_RESET;
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Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
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Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
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} else {
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Snp->Cdb.OpFlags = PXE_OPFLAGS_STATION_ADDRESS_READ;
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//
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// even though the OPFLAGS are set to READ, supplying a new address
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// in the CPB will make undi change the mac address to the new one.
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//
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CopyMem (&Cpb->StationAddr, NewMacAddr, Snp->Mode.HwAddressSize);
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Snp->Cdb.CPBsize = sizeof (PXE_CPB_STATION_ADDRESS);
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Snp->Cdb.CPBaddr = (UINT64)(UINTN) Cpb;
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}
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Snp->Cdb.DBsize = sizeof (PXE_DB_STATION_ADDRESS);
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Snp->Cdb.DBaddr = (UINT64)(UINTN) Db;
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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 ((EFI_D_NET, "\nsnp->undi.station_addr() "));
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(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
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if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
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DEBUG (
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(EFI_D_ERROR,
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"\nsnp->undi.station_addr() %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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//
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// UNDI command failed. Return UNDI status to caller.
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//
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return EFI_DEVICE_ERROR;
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}
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//
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// read the changed address and save it in SNP->Mode structure
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//
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PxeGetStnAddr (Snp);
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return EFI_SUCCESS;
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}
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/**
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Modifies or resets the current station address, if supported.
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This function modifies or resets the current station address of a network
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interface, if supported. If Reset is TRUE, then the current station address is
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set to the network interface’s permanent address. If Reset is FALSE, and the
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network interface allows its station address to be modified, then the current
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station address is changed to the address specified by New. If the network
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interface does not allow its station address to be modified, then
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EFI_INVALID_PARAMETER will be returned. If the station address is successfully
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updated on the network interface, EFI_SUCCESS will be returned. If the driver
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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 Reset Flag used to reset the station address to the network interface’s
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permanent address.
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@param New New station address to be used for the network interface.
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@retval EFI_SUCCESS The network interface’s station address was updated.
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@retval EFI_NOT_STARTED The Simple Network Protocol interface has not been
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started by calling Start().
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@retval EFI_INVALID_PARAMETER The New station address was not accepted by the NIC.
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@retval EFI_INVALID_PARAMETER Reset is FALSE and New is NULL.
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@retval EFI_DEVICE_ERROR The Simple Network Protocol interface has not
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been initialized by calling Initialize().
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@retval EFI_DEVICE_ERROR An error occurred attempting to set the new
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station address.
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@retval EFI_UNSUPPORTED The NIC does not support changing the network
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interface’s station address.
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**/
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EFI_STATUS
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EFIAPI
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SnpUndi32StationAddress (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN BOOLEAN Reset,
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IN EFI_MAC_ADDRESS *New 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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//
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// Check for invalid parameter combinations.
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//
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if ((This == NULL) ||
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(!Reset && (New == 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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//
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// Return error if the SNP is not initialized.
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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 (Reset) {
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Status = PxeSetStnAddr (Snp, NULL);
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} else {
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Status = PxeSetStnAddr (Snp, New);
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}
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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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