mirror of
https://github.com/ipxe/ipxe
synced 2025-12-17 10:01:03 +03:00
5a2fa6040e
When chainloading iPXE from a VLAN device, the MAC address of the loaded image's device handle will match the MAC address of the trunk device created by iPXE, and the autoboot process will then erroneously consider the trunk device to be an autoboot device. Fix by recording the VLAN tag along with the MAC address, and treating the VLAN tag as part of the filter used to match the MAC address against candidate network devices. Signed-off-by: Michael Brown <mcb30@ipxe.org>
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/*
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* Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <string.h>
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#include <errno.h>
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#include <ipxe/efi/efi.h>
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#include <ipxe/efi/efi_path.h>
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#include <ipxe/efi/efi_autoboot.h>
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#include <ipxe/efi/Protocol/SimpleNetwork.h>
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#include <usr/autoboot.h>
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/** @file
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*
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* EFI autoboot device
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*
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*/
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/**
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* Identify autoboot device
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*
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* @v device Device handle
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* @v path Device path
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* @ret rc Return status code
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*/
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int efi_set_autoboot_ll_addr ( EFI_HANDLE device,
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EFI_DEVICE_PATH_PROTOCOL *path ) {
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EFI_BOOT_SERVICES *bs = efi_systab->BootServices;
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union {
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EFI_SIMPLE_NETWORK_PROTOCOL *snp;
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void *interface;
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} snp;
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EFI_SIMPLE_NETWORK_MODE *mode;
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EFI_STATUS efirc;
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unsigned int vlan;
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int rc;
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/* Look for an SNP instance on the image's device handle */
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if ( ( efirc = bs->OpenProtocol ( device,
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&efi_simple_network_protocol_guid,
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&snp.interface, efi_image_handle,
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NULL,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL ))!=0){
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rc = -EEFI ( efirc );
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DBGC ( device, "EFI %s has no SNP instance: %s\n",
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efi_handle_name ( device ), strerror ( rc ) );
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return rc;
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}
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/* Record autoboot device */
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mode = snp.snp->Mode;
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vlan = efi_path_vlan ( path );
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set_autoboot_ll_addr ( &mode->CurrentAddress, mode->HwAddressSize,
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vlan );
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DBGC ( device, "EFI %s found autoboot link-layer address:\n",
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efi_handle_name ( device ) );
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DBGC_HDA ( device, 0, &mode->CurrentAddress, mode->HwAddressSize );
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if ( vlan ) {
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DBGC ( device, "EFI %s found autoboot VLAN %d\n",
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efi_handle_name ( device ), vlan );
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}
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/* Close protocol */
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bs->CloseProtocol ( device, &efi_simple_network_protocol_guid,
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efi_image_handle, NULL );
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return 0;
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}
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