MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.h

   1 /** @file
   2   The header file of IScsiDhcp.
   3
   4 Copyright (c) 2004 - 2009, Intel Corporation.<BR>
   5 All rights reserved. This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef _ISCSI_DHCP_H_
  16 #define _ISCSI_DHCP_H_
  17
  18 #include <Protocol/Dhcp4.h>
  19
  20 #define DHCP4_TAG_PARA_LIST             55
  21 #define DHCP4_TAG_NETMASK               1
  22 #define DHCP4_TAG_ROUTER                3
  23 #define DHCP4_TAG_DNS                   6
  24 #define DHCP4_TAG_SERVER_ID             54
  25 #define DHCP4_TAG_ROOT_PATH             17
  26 #define ISCSI_ROOT_PATH_ID              "iscsi:"
  27 #define ISCSI_ROOT_PATH_FIELD_DELIMITER ':'
  28
  29 #define RP_FIELD_IDX_SERVERNAME         0
  30 #define RP_FIELD_IDX_PROTOCOL           1
  31 #define RP_FIELD_IDX_PORT               2
  32 #define RP_FIELD_IDX_LUN                3
  33 #define RP_FIELD_IDX_TARGETNAME         4
  34 #define RP_FIELD_IDX_MAX                5
  35
  36 typedef struct _ISCSI_ROOT_PATH_FIELD {
  37   CHAR8 *Str;
  38   UINT8 Len;
  39 } ISCSI_ROOT_PATH_FIELD;
  40
  41 /**
  42   Parse the DHCP ACK to get the address configuration and DNS information.
  43
  44   @param[in]       Image            The handle of the driver image.
  45   @param[in]       Controller       The handle of the controller;
  46   @param[in, out]  ConfigData       The session configuration data.
  47
  48   @retval EFI_SUCCESS           The DNS information is got from the DHCP ACK.
  49   @retval EFI_OUT_OF_RESOURCES  Failed to allocate memory.
  50   @retval Others                Other errors as indicated.
  51 **/
  52 EFI_STATUS
  53 IScsiDoDhcp (
  54   IN     EFI_HANDLE                 Image,
  55   IN     EFI_HANDLE                 Controller,
  56   IN OUT ISCSI_SESSION_CONFIG_DATA  *ConfigData
  57   );
  58
  59 #endif