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1 /** @file
2   The header file of IScsiDhcp.
3 
4 Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
5 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 EFI_NO_MEDIA          There was a media error.
51   @retval Others                Other errors as indicated.
52 
53 **/
54 EFI_STATUS
55 IScsiDoDhcp (
56   IN     EFI_HANDLE                 Image,
57   IN     EFI_HANDLE                 Controller,
58   IN OUT ISCSI_SESSION_CONFIG_DATA  *ConfigData
59   );
60 
61 #endif
62