Michael Brown
32a9408217
Provide wrapper macros to allow efi_open() and related functions to accept a pointer to any pointer type as the "interface" argument, in order to allow a substantial amount of type adjustment boilerplate to be removed. Signed-off-by: Michael Brown <mcb30@ipxe.org>
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/*
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* Copyright (C) 2021 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/cachedhcp.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_cachedhcp.h>
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#include <ipxe/efi/Protocol/PxeBaseCode.h>
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/** @file
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*
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* EFI cached DHCP packet
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*
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*/
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/**
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* Record cached DHCP packet
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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_cachedhcp_record ( EFI_HANDLE device,
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EFI_DEVICE_PATH_PROTOCOL *path ) {
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unsigned int vlan;
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EFI_PXE_BASE_CODE_PROTOCOL *pxe;
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EFI_PXE_BASE_CODE_MODE *mode;
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int rc;
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/* Get VLAN tag, if any */
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vlan = efi_path_vlan ( path );
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/* Look for a PXE base code instance on the image's device handle */
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if ( ( rc = efi_open ( device, &efi_pxe_base_code_protocol_guid,
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&pxe ) ) != 0 ) {
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DBGC ( device, "EFI %s has no PXE base code 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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/* Do not attempt to cache IPv6 packets */
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mode = pxe->Mode;
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if ( mode->UsingIpv6 ) {
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DBGC ( device, "EFI %s has IPv6 PXE base code\n",
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efi_handle_name ( device ) );
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return -ENOTSUP;
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}
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/* Record DHCPACK, if present */
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if ( mode->DhcpAckReceived &&
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( ( rc = cachedhcp_record ( &cached_dhcpack, vlan,
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virt_to_user ( &mode->DhcpAck ),
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sizeof ( mode->DhcpAck ) ) ) != 0 ) ) {
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DBGC ( device, "EFI %s could not record DHCPACK: %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 ProxyDHCPOFFER, if present */
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if ( mode->ProxyOfferReceived &&
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( ( rc = cachedhcp_record ( &cached_proxydhcp, vlan,
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virt_to_user ( &mode->ProxyOffer ),
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sizeof ( mode->ProxyOffer ) ) ) != 0)){
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DBGC ( device, "EFI %s could not record ProxyDHCPOFFER: %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 PxeBSACK, if present */
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if ( mode->PxeReplyReceived &&
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( ( rc = cachedhcp_record ( &cached_pxebs, vlan,
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virt_to_user ( &mode->PxeReply ),
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sizeof ( mode->PxeReply ) ) ) != 0)){
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DBGC ( device, "EFI %s could not record PXEBSACK: %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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return 0;
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}
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