Add a new head file Dhcp.h in Mde/Include/IndustryStandard, normalize the
universal option numbers and other network number tags.

Cc: Ye Ting <[email protected]>
Cc: Fu Siyuan <[email protected]>
Cc: Wu Jiaxin <[email protected]>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Zhang Lubo <[email protected]>
---
 .../Universal/Network/Dhcp4Dxe/Dhcp4Impl.h         |   4 +-
 MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c  |  16 +-
 .../Universal/Network/Dhcp4Dxe/Dhcp4Option.c       | 200 ++++++++++-----------
 .../Universal/Network/Dhcp4Dxe/Dhcp4Option.h       | 124 +------------
 .../Universal/Network/IScsiDxe/IScsiDhcp.c         |  10 +-
 .../Universal/Network/IScsiDxe/IScsiDhcp.h         |   8 +-
 .../Universal/Network/IScsiDxe/IScsiImpl.h         |   4 +-
 .../Universal/Network/Ip4Dxe/Ip4Config2Impl.c      |  10 +-
 .../Universal/Network/Ip4Dxe/Ip4Config2Impl.h      |   7 +-
 MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h    |   4 +-
 .../Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c     | 100 +++++------
 .../Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h     |  45 +----
 .../Universal/Network/UefiPxeBcDxe/PxeBcImpl.h     |   3 +-
 13 files changed, 192 insertions(+), 343 deletions(-)

diff --git a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.h 
b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.h
index 44213cf..e546a08 100644
--- a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.h
+++ b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.h
@@ -4,11 +4,11 @@
   RFC 2131: Dynamic Host Configuration Protocol
   RFC 2132: DHCP Options and BOOTP Vendor Extensions
   RFC 1534: Interoperation Between DHCP and BOOTP
   RFC 3396: Encoding Long Options in DHCP.
   
-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -24,11 +24,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 
 #include <Uefi.h>
 
 #include <Protocol/Dhcp4.h>
 #include <Protocol/Udp4.h>
-
+#include <IndustryStandard/Dhcp.h>
 #include <Library/DebugLib.h>
 #include <Library/UefiDriverEntryPoint.h>
 #include <Library/UefiBootServicesTableLib.h>
 #include <Library/UefiLib.h>
 #include <Library/BaseLib.h>
diff --git a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c 
b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c
index 4bc9915..037d1cc 100644
--- a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c
+++ b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Io.c
@@ -1,9 +1,9 @@
 /** @file
   EFI DHCP protocol implementation.
   
-Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -1238,11 +1238,11 @@ DhcpSendMessage (
   //
   // Append the DHCP message type
   //
   Packet->Dhcp4.Magik = DHCP_OPTION_MAGIC;
   Buf                 = Packet->Dhcp4.Option;
-  Buf                 = DhcpAppendOption (Buf, DHCP_TAG_TYPE, 1, &Type);
+  Buf                 = DhcpAppendOption (Buf, DHCP4_TAG_MSG_TYPE, 1, &Type);
 
   //
   // Append the serverid option if necessary:
   //   1. DHCP decline message
   //   2. DHCP release message
@@ -1253,11 +1253,11 @@ DhcpSendMessage (
       ) {
 
     ASSERT ((Para != NULL) && (Para->ServerId != 0));
 
     IpAddr  = HTONL (Para->ServerId);
-    Buf     = DhcpAppendOption (Buf, DHCP_TAG_SERVER_ID, 4, (UINT8 *) &IpAddr);
+    Buf     = DhcpAppendOption (Buf, DHCP4_TAG_SERVER_ID, 4, (UINT8 *) 
&IpAddr);
   }
 
   //
   // Append the requested IP option if necessary:
   //   1. DHCP request to use the previously allocated address
@@ -1279,29 +1279,29 @@ DhcpSendMessage (
     ASSERT (SeedHead != NULL);
     IpAddr = EFI_IP4 (SeedHead->YourAddr);
   }
 
   if (IpAddr != 0) {
-    Buf = DhcpAppendOption (Buf, DHCP_TAG_REQUEST_IP, 4, (UINT8 *) &IpAddr);
+    Buf = DhcpAppendOption (Buf, DHCP4_TAG_REQUEST_IP, 4, (UINT8 *) &IpAddr);
   }
 
   //
   // Append the Max Message Length option if it isn't a DECLINE
   // or RELEASE to direct the server use large messages instead of
   // override the BOOTFILE and SERVER fields in the message head.
   //
   if ((Type != DHCP_MSG_DECLINE) && (Type != DHCP_MSG_RELEASE)) {
     MaxMsg  = HTONS (0xFF00);
-    Buf     = DhcpAppendOption (Buf, DHCP_TAG_MAXMSG, 2, (UINT8 *) &MaxMsg);
+    Buf     = DhcpAppendOption (Buf, DHCP4_TAG_MAXMSG, 2, (UINT8 *) &MaxMsg);
   }
 
   //
   // Append the user's message if it isn't NULL
   //
   if (Msg != NULL) {
     Len     = MIN ((UINT32) AsciiStrLen ((CHAR8 *) Msg), 255);
-    Buf     = DhcpAppendOption (Buf, DHCP_TAG_MESSAGE, (UINT16) Len, Msg);
+    Buf     = DhcpAppendOption (Buf, DHCP4_TAG_MESSAGE, (UINT16) Len, Msg);
   }
 
   //
   // Append the user configured options
   //
@@ -1310,11 +1310,11 @@ DhcpSendMessage (
       //
       // We can't use any option other than the client ID from user
       // if it is a DHCP decline or DHCP release .
       //
       if (((Type == DHCP_MSG_DECLINE) || (Type == DHCP_MSG_RELEASE)) &&
-          (Config->OptionList[Index]->OpCode != DHCP_TAG_CLIENT_ID)) {
+          (Config->OptionList[Index]->OpCode != DHCP4_TAG_CLIENT_ID)) {
         continue;
       }
 
       Buf = DhcpAppendOption (
               Buf,
@@ -1323,11 +1323,11 @@ DhcpSendMessage (
               Config->OptionList[Index]->Data
               );
     }
   }
 
-  *(Buf++) = DHCP_TAG_EOP;
+  *(Buf++) = DHCP4_TAG_EOP;
   Packet->Length += (UINT32) (Buf - Packet->Dhcp4.Option);
 
   //
   // OK, the message is built, call the user to override it.
   //
diff --git a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.c 
b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.c
index d7700bc..0363698 100644
--- a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.c
+++ b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.c
@@ -1,9 +1,9 @@
 /** @file
   Function to validate, parse, process the DHCP options.
   
-Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -18,95 +18,95 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 /// A list of the format of DHCP Options sorted by option tag
 /// to validate a dhcp message. Refere the comments of the
 /// DHCP_OPTION_FORMAT structure.
 ///
 DHCP_OPTION_FORMAT DhcpOptionFormats[] = {
-  {DHCP_TAG_NETMASK,        DHCP_OPTION_IP,     1, 1  , TRUE},
-  {DHCP_TAG_TIME_OFFSET,    DHCP_OPTION_INT32,  1, 1  , FALSE},
-  {DHCP_TAG_ROUTER,         DHCP_OPTION_IP,     1, -1 , TRUE},
-  {DHCP_TAG_TIME_SERVER,    DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_NAME_SERVER,    DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_DNS_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_LOG_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_COOKIE_SERVER,  DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_LPR_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_IMPRESS_SERVER, DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_RL_SERVER,      DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_HOSTNAME,       DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_BOOTFILE_LEN,   DHCP_OPTION_INT16,  1, 1  , FALSE},
-  {DHCP_TAG_DUMP,           DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_DOMAINNAME,     DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_SWAP_SERVER,    DHCP_OPTION_IP,     1, 1  , FALSE},
-  {DHCP_TAG_ROOTPATH,       DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_EXTEND_PATH,    DHCP_OPTION_INT8,   1, -1 , FALSE},
-
-  {DHCP_TAG_IPFORWARD,      DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-  {DHCP_TAG_NONLOCAL_SRR,   DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-  {DHCP_TAG_POLICY_SRR,     DHCP_OPTION_IPPAIR, 1, -1 , FALSE},
-  {DHCP_TAG_EMTU,           DHCP_OPTION_INT16,  1, 1  , FALSE},
-  {DHCP_TAG_TTL,            DHCP_OPTION_INT8,   1, 1  , FALSE},
-  {DHCP_TAG_PATHMTU_AGE,    DHCP_OPTION_INT32,  1, 1  , FALSE},
-  {DHCP_TAG_PATHMTU_PLATEAU,DHCP_OPTION_INT16,  1, -1 , FALSE},
-
-  {DHCP_TAG_IFMTU,          DHCP_OPTION_INT16,  1, 1  , FALSE},
-  {DHCP_TAG_SUBNET_LOCAL,   DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-  {DHCP_TAG_BROADCAST,      DHCP_OPTION_IP,     1, 1  , FALSE},
-  {DHCP_TAG_DISCOVER_MASK,  DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-  {DHCP_TAG_SUPPLY_MASK,    DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-  {DHCP_TAG_DISCOVER_ROUTE, DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-  {DHCP_TAG_ROUTER_SOLICIT, DHCP_OPTION_IP,     1, 1  , FALSE},
-  {DHCP_TAG_STATIC_ROUTE,   DHCP_OPTION_IPPAIR, 1, -1 , FALSE},
-
-  {DHCP_TAG_TRAILER,        DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-  {DHCP_TAG_ARPAGE,         DHCP_OPTION_INT32,  1, 1  , FALSE},
-  {DHCP_TAG_ETHER_ENCAP,    DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-
-  {DHCP_TAG_TCP_TTL,        DHCP_OPTION_INT8,   1, 1  , FALSE},
-  {DHCP_TAG_KEEP_INTERVAL,  DHCP_OPTION_INT32,  1, 1  , FALSE},
-  {DHCP_TAG_KEEP_GARBAGE,   DHCP_OPTION_SWITCH, 1, 1  , FALSE},
-
-  {DHCP_TAG_NIS_DOMAIN,     DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_NIS_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_NTP_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_VENDOR,         DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_NBNS,           DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_NBDD,           DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_NBTYPE,         DHCP_OPTION_INT8,   1, 1  , FALSE},
-  {DHCP_TAG_NBSCOPE,        DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_XFONT,          DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_XDM,            DHCP_OPTION_IP,     1, -1 , FALSE},
-
-  {DHCP_TAG_REQUEST_IP,     DHCP_OPTION_IP,     1, 1  , FALSE},
-  {DHCP_TAG_LEASE,          DHCP_OPTION_INT32,  1, 1  , TRUE},
-  {DHCP_TAG_OVERLOAD,       DHCP_OPTION_INT8,   1, 1  , TRUE},
-  {DHCP_TAG_TYPE,           DHCP_OPTION_INT8,   1, 1  , TRUE},
-  {DHCP_TAG_SERVER_ID,      DHCP_OPTION_IP,     1, 1  , TRUE},
-  {DHCP_TAG_PARA_LIST,      DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_MESSAGE,        DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_MAXMSG,         DHCP_OPTION_INT16,  1, 1  , FALSE},
-  {DHCP_TAG_T1,             DHCP_OPTION_INT32,  1, 1  , TRUE},
-  {DHCP_TAG_T2,             DHCP_OPTION_INT32,  1, 1  , TRUE},
-  {DHCP_TAG_VENDOR_CLASS,   DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_CLIENT_ID,      DHCP_OPTION_INT8,   2, -1 , FALSE},
-
-  {DHCP_TAG_NISPLUS,        DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_NISPLUS_SERVER, DHCP_OPTION_IP,     1, -1 , FALSE},
-
-  {DHCP_TAG_TFTP,           DHCP_OPTION_INT8,   1, -1 , FALSE},
-  {DHCP_TAG_BOOTFILE,       DHCP_OPTION_INT8,   1, -1 , FALSE},
-
-  {DHCP_TAG_MOBILEIP,       DHCP_OPTION_IP,     0, -1 , FALSE},
-  {DHCP_TAG_SMTP,           DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_POP3,           DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_NNTP,           DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_WWW,            DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_FINGER,         DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_IRC,            DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_STTALK,         DHCP_OPTION_IP,     1, -1 , FALSE},
-  {DHCP_TAG_STDA,           DHCP_OPTION_IP,     1, -1 , FALSE},
-
-  {DHCP_TAG_CLASSLESS_ROUTE,DHCP_OPTION_INT8,   5, -1 , FALSE},
+  {DHCP4_TAG_NETMASK,        DHCP_OPTION_IP,     1, 1  , TRUE},
+  {DHCP4_TAG_TIME_OFFSET,    DHCP_OPTION_INT32,  1, 1  , FALSE},
+  {DHCP4_TAG_ROUTER,         DHCP_OPTION_IP,     1, -1 , TRUE},
+  {DHCP4_TAG_TIME_SERVER,    DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_NAME_SERVER,    DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_DNS_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_LOG_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_COOKIE_SERVER,  DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_LPR_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_IMPRESS_SERVER, DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_RL_SERVER,      DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_HOSTNAME,       DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_BOOTFILE_LEN,   DHCP_OPTION_INT16,  1, 1  , FALSE},
+  {DHCP4_TAG_DUMP,           DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_DOMAINNAME,     DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_SWAP_SERVER,    DHCP_OPTION_IP,     1, 1  , FALSE},
+  {DHCP4_TAG_ROOTPATH,       DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_EXTEND_PATH,    DHCP_OPTION_INT8,   1, -1 , FALSE},
+
+  {DHCP4_TAG_IPFORWARD,      DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+  {DHCP4_TAG_NONLOCAL_SRR,   DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+  {DHCP4_TAG_POLICY_SRR,     DHCP_OPTION_IPPAIR, 1, -1 , FALSE},
+  {DHCP4_TAG_EMTU,           DHCP_OPTION_INT16,  1, 1  , FALSE},
+  {DHCP4_TAG_TTL,            DHCP_OPTION_INT8,   1, 1  , FALSE},
+  {DHCP4_TAG_PATHMTU_AGE,    DHCP_OPTION_INT32,  1, 1  , FALSE},
+  {DHCP4_TAG_PATHMTU_PLATEAU,DHCP_OPTION_INT16,  1, -1 , FALSE},
+
+  {DHCP4_TAG_IFMTU,          DHCP_OPTION_INT16,  1, 1  , FALSE},
+  {DHCP4_TAG_SUBNET_LOCAL,   DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+  {DHCP4_TAG_BROADCAST,      DHCP_OPTION_IP,     1, 1  , FALSE},
+  {DHCP4_TAG_DISCOVER_MASK,  DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+  {DHCP4_TAG_SUPPLY_MASK,    DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+  {DHCP4_TAG_DISCOVER_ROUTE, DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+  {DHCP4_TAG_ROUTER_SOLICIT, DHCP_OPTION_IP,     1, 1  , FALSE},
+  {DHCP4_TAG_STATIC_ROUTE,   DHCP_OPTION_IPPAIR, 1, -1 , FALSE},
+
+  {DHCP4_TAG_TRAILER,        DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+  {DHCP4_TAG_ARPAGE,         DHCP_OPTION_INT32,  1, 1  , FALSE},
+  {DHCP4_TAG_ETHER_ENCAP,    DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+
+  {DHCP4_TAG_TCP_TTL,        DHCP_OPTION_INT8,   1, 1  , FALSE},
+  {DHCP4_TAG_KEEP_INTERVAL,  DHCP_OPTION_INT32,  1, 1  , FALSE},
+  {DHCP4_TAG_KEEP_GARBAGE,   DHCP_OPTION_SWITCH, 1, 1  , FALSE},
+
+  {DHCP4_TAG_NIS_DOMAIN,     DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_NIS_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_NTP_SERVER,     DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_VENDOR,         DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_NBNS,           DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_NBDD,           DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_NBTYPE,         DHCP_OPTION_INT8,   1, 1  , FALSE},
+  {DHCP4_TAG_NBSCOPE,        DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_XFONT,          DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_XDM,            DHCP_OPTION_IP,     1, -1 , FALSE},
+
+  {DHCP4_TAG_REQUEST_IP,     DHCP_OPTION_IP,     1, 1  , FALSE},
+  {DHCP4_TAG_LEASE,          DHCP_OPTION_INT32,  1, 1  , TRUE},
+  {DHCP4_TAG_OVERLOAD,       DHCP_OPTION_INT8,   1, 1  , TRUE},
+  {DHCP4_TAG_MSG_TYPE,       DHCP_OPTION_INT8,   1, 1  , TRUE},
+  {DHCP4_TAG_SERVER_ID,      DHCP_OPTION_IP,     1, 1  , TRUE},
+  {DHCP4_TAG_PARA_LIST,      DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_MESSAGE,        DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_MAXMSG,         DHCP_OPTION_INT16,  1, 1  , FALSE},
+  {DHCP4_TAG_T1,             DHCP_OPTION_INT32,  1, 1  , TRUE},
+  {DHCP4_TAG_T2,             DHCP_OPTION_INT32,  1, 1  , TRUE},
+  {DHCP4_TAG_CLASS_ID,       DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_CLIENT_ID,      DHCP_OPTION_INT8,   2, -1 , FALSE},
+
+  {DHCP4_TAG_NISPLUS,        DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_NISPLUS_SERVER, DHCP_OPTION_IP,     1, -1 , FALSE},
+
+  {DHCP4_TAG_TFTP,           DHCP_OPTION_INT8,   1, -1 , FALSE},
+  {DHCP4_TAG_BOOTFILE,       DHCP_OPTION_INT8,   1, -1 , FALSE},
+
+  {DHCP4_TAG_MOBILEIP,       DHCP_OPTION_IP,     0, -1 , FALSE},
+  {DHCP4_TAG_SMTP,           DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_POP3,           DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_NNTP,           DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_WWW,            DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_FINGER,         DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_IRC,            DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_STTALK,         DHCP_OPTION_IP,     1, -1 , FALSE},
+  {DHCP4_TAG_STDA,           DHCP_OPTION_IP,     1, -1 , FALSE},
+
+  {DHCP4_TAG_CLASSLESS_ROUTE,DHCP_OPTION_INT8,   5, -1 , FALSE},
 };
 
 
 /**
   Binary search the DhcpOptionFormats array to find the format
@@ -246,50 +246,50 @@ DhcpGetParameter (
   IN  UINT8                  *Data,
   OUT DHCP_PARAMETER         *Para
   )
 {
   switch (Tag) {
-  case DHCP_TAG_NETMASK:
+  case DHCP4_TAG_NETMASK:
     Para->NetMask = NetGetUint32 (Data);
     break;
 
-  case DHCP_TAG_ROUTER:
+  case DHCP4_TAG_ROUTER:
     //
     // Return the first router to consumer which is the preferred one
     //
     Para->Router = NetGetUint32 (Data);
     break;
 
-  case DHCP_TAG_LEASE:
+  case DHCP4_TAG_LEASE:
     Para->Lease = NetGetUint32 (Data);
     break;
 
-  case DHCP_TAG_OVERLOAD:
+  case DHCP4_TAG_OVERLOAD:
     Para->Overload = *Data;
 
     if ((Para->Overload < 1) || (Para->Overload > 3)) {
       return EFI_INVALID_PARAMETER;
     }
     break;
 
-  case DHCP_TAG_TYPE:
+  case DHCP4_TAG_MSG_TYPE:
     Para->DhcpType = *Data;
 
     if ((Para->DhcpType < 1) || (Para->DhcpType > 9)) {
       return EFI_INVALID_PARAMETER;
     }
     break;
 
-  case DHCP_TAG_SERVER_ID:
+  case DHCP4_TAG_SERVER_ID:
     Para->ServerId = NetGetUint32 (Data);
     break;
 
-  case DHCP_TAG_T1:
+  case DHCP4_TAG_T1:
     Para->T1 = NetGetUint32 (Data);
     break;
 
-  case DHCP_TAG_T2:
+  case DHCP4_TAG_T2:
     Para->T2 = NetGetUint32 (Data);
     break;
   }
 
   return EFI_SUCCESS;
@@ -297,17 +297,17 @@ DhcpGetParameter (
 
 
 /**
   Inspect all the options in a single buffer. DHCP options may be contained
   in several buffers, such as the BOOTP options filed, boot file or server
-  name. Each option buffer is required to end with DHCP_TAG_EOP.
+  name. Each option buffer is required to end with DHCP4_TAG_EOP.
 
   @param[in]  Buffer                 The buffer which contains DHCP options
   @param[in]  BufLen                 The length of the buffer
   @param[in]  Check                  The callback function for each option 
found
   @param[in]  Context                The opaque parameter for the Check
-  @param[out] Overload               Variable to save the value of 
DHCP_TAG_OVERLOAD
+  @param[out] Overload               Variable to save the value of 
DHCP4_TAG_OVERLOAD
                                      option.
 
   @retval EFI_SUCCESS            All the options are valid
   @retval EFI_INVALID_PARAMETER  The options are mal-formated.
 
@@ -328,14 +328,14 @@ DhcpIterateBufferOptions (
   Cur = 0;
 
   while (Cur < BufLen) {
     Tag = Buffer[Cur];
 
-    if (Tag == DHCP_TAG_PAD) {
+    if (Tag == DHCP4_TAG_PAD) {
       Cur++;
       continue;
-    } else if (Tag == DHCP_TAG_EOP) {
+    } else if (Tag == DHCP4_TAG_EOP) {
       return EFI_SUCCESS;
     }
 
     Cur++;
 
@@ -347,11 +347,11 @@ DhcpIterateBufferOptions (
 
     if (Cur + Len > BufLen) {
       return EFI_INVALID_PARAMETER;
     }
 
-    if ((Tag == DHCP_TAG_OVERLOAD) && (Overload != NULL)) {
+    if ((Tag == DHCP4_TAG_OVERLOAD) && (Overload != NULL)) {
       if (Len != 1) {
         return EFI_INVALID_PARAMETER;
       }
 
       *Overload = Buffer[Cur];
@@ -877,11 +877,11 @@ DhcpBuild (
     if (Mark[Index].Len != 0) {
       Buf = DhcpAppendOption (Buf, Mark[Index].Tag, Mark[Index].Len, 
Mark[Index].Data);
     }
   }
 
-  *(Buf++)        = DHCP_TAG_EOP;
+  *(Buf++)        = DHCP4_TAG_EOP;
   Packet->Length  = sizeof (EFI_DHCP4_HEADER) + sizeof (UINT32)
                       + (UINT32) (Buf - Packet->Dhcp4.Option);
 
   *NewPacket      = Packet;
   Status          = EFI_SUCCESS;
diff --git a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.h 
b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.h
index f532780..02ffa25 100644
--- a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.h
+++ b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Option.h
@@ -1,9 +1,9 @@
 /** @file
   To validate, parse and process the DHCP options.
   
-Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -17,116 +17,10 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 
 ///
 /// DHCP option tags (types)
 ///
 
-//
-// RFC1497 vendor extensions
-//
-#define DHCP_TAG_PAD              0    // Pad Option
-#define DHCP_TAG_EOP              255  // End Option
-#define DHCP_TAG_NETMASK          1    // Subnet Mask
-#define DHCP_TAG_TIME_OFFSET      2    // Time Offset from UTC
-#define DHCP_TAG_ROUTER           3    // Router option,
-#define DHCP_TAG_TIME_SERVER      4    // Time Server
-#define DHCP_TAG_NAME_SERVER      5    // Name Server
-#define DHCP_TAG_DNS_SERVER       6    // Domain Name Server
-#define DHCP_TAG_LOG_SERVER       7    // Log Server
-#define DHCP_TAG_COOKIE_SERVER    8    // Cookie Server
-#define DHCP_TAG_LPR_SERVER       9    // LPR Print Server
-#define DHCP_TAG_IMPRESS_SERVER   10   // Impress Server
-#define DHCP_TAG_RL_SERVER        11   // Resource Location Server
-#define DHCP_TAG_HOSTNAME         12   // Host Name
-#define DHCP_TAG_BOOTFILE_LEN     13   // Boot File Size
-#define DHCP_TAG_DUMP             14   // Merit Dump File
-#define DHCP_TAG_DOMAINNAME       15   // Domain Name
-#define DHCP_TAG_SWAP_SERVER      16   // Swap Server
-#define DHCP_TAG_ROOTPATH         17   // Root path
-#define DHCP_TAG_EXTEND_PATH      18   // Extensions Path
-
-//
-// IP Layer Parameters per Host
-//
-#define DHCP_TAG_IPFORWARD        19 // IP Forwarding Enable/Disable
-#define DHCP_TAG_NONLOCAL_SRR     20 // on-Local Source Routing Enable/Disable
-#define DHCP_TAG_POLICY_SRR       21 // Policy Filter
-#define DHCP_TAG_EMTU             22 // Maximum Datagram Reassembly Size
-#define DHCP_TAG_TTL              23 // Default IP Time-to-live
-#define DHCP_TAG_PATHMTU_AGE      24 // Path MTU Aging Timeout
-#define DHCP_TAG_PATHMTU_PLATEAU  25 // Path MTU Plateau Table
-
-//
-// IP Layer Parameters per Interface
-//
-#define DHCP_TAG_IFMTU            26 // Interface MTU
-#define DHCP_TAG_SUBNET_LOCAL     27 // All Subnets are Local
-#define DHCP_TAG_BROADCAST        28 // Broadcast Address
-#define DHCP_TAG_DISCOVER_MASK    29 // Perform Mask Discovery
-#define DHCP_TAG_SUPPLY_MASK      30 // Mask Supplier
-#define DHCP_TAG_DISCOVER_ROUTE   31 // Perform Router Discovery
-#define DHCP_TAG_ROUTER_SOLICIT   32 // Router Solicitation Address
-#define DHCP_TAG_STATIC_ROUTE     33 // Static Route
-
-//
-// Link Layer Parameters per Interface
-//
-#define DHCP_TAG_TRAILER          34 // Trailer Encapsulation
-#define DHCP_TAG_ARPAGE           35 // ARP Cache Timeout
-#define DHCP_TAG_ETHER_ENCAP      36 // Ethernet Encapsulation
-
-//
-// TCP Parameters
-//
-#define DHCP_TAG_TCP_TTL          37 // TCP Default TTL
-#define DHCP_TAG_KEEP_INTERVAL    38 // TCP Keepalive Interval
-#define DHCP_TAG_KEEP_GARBAGE     39 // TCP Keepalive Garbage
-
-//
-// Application and Service Parameters
-//
-#define DHCP_TAG_NIS_DOMAIN       40   // Network Information Service Domain
-#define DHCP_TAG_NIS_SERVER       41   // Network Information Servers
-#define DHCP_TAG_NTP_SERVER       42   // Network Time Protocol Servers
-#define DHCP_TAG_VENDOR           43   // Vendor Specific Information
-#define DHCP_TAG_NBNS             44   // NetBIOS over TCP/IP Name Server
-#define DHCP_TAG_NBDD             45   // NetBIOS Datagram Distribution Server
-#define DHCP_TAG_NBTYPE           46   // NetBIOS over TCP/IP Node Type
-#define DHCP_TAG_NBSCOPE          47   // NetBIOS over TCP/IP Scope
-#define DHCP_TAG_XFONT            48   // X Window System Font Server
-#define DHCP_TAG_XDM              49   // X Window System Display Manager
-#define DHCP_TAG_NISPLUS          64   // Network Information Service+ Domain
-#define DHCP_TAG_NISPLUS_SERVER   65   // Network Information Service+ Servers
-#define DHCP_TAG_MOBILEIP         68   // Mobile IP Home Agent
-#define DHCP_TAG_SMTP             69   // Simple Mail Transport Protocol Server
-#define DHCP_TAG_POP3             70   // Post Office Protocol (POP3) Server
-#define DHCP_TAG_NNTP             71   // Network News Transport Protocol 
Server
-#define DHCP_TAG_WWW              72   // Default World Wide Web (WWW) Server
-#define DHCP_TAG_FINGER           73   // Default Finger Server
-#define DHCP_TAG_IRC              74   // Default Internet Relay Chat (IRC) 
Server
-#define DHCP_TAG_STTALK           75   // StreetTalk Server
-#define DHCP_TAG_STDA             76   // StreetTalk Directory Assistance 
Server
-#define DHCP_TAG_CLASSLESS_ROUTE  121  // Classless Route
-
-//
-// DHCP Extensions
-//
-#define DHCP_TAG_REQUEST_IP       50         // Requested IP Address
-#define DHCP_TAG_LEASE            51         // IP Address Lease Time
-#define DHCP_TAG_OVERLOAD         52         // Option Overload
-#define DHCP_TAG_TFTP             66         // TFTP server name
-#define DHCP_TAG_BOOTFILE         67         // Bootfile name
-#define DHCP_TAG_TYPE             53         // DHCP Message Type
-#define DHCP_TAG_SERVER_ID        54         // Server Identifier
-#define DHCP_TAG_PARA_LIST        55         // Parameter Request List
-#define DHCP_TAG_MESSAGE          56         // Message
-#define DHCP_TAG_MAXMSG           57         // Maximum DHCP Message Size
-#define DHCP_TAG_T1               58         // Renewal (T1) Time Value
-#define DHCP_TAG_T2               59         // Rebinding (T2) Time Value
-#define DHCP_TAG_VENDOR_CLASS     60         // Vendor class identifier
-#define DHCP_TAG_CLIENT_ID        61         // Client-identifier
-
-
 #define DHCP_OPTION_MAGIC         0x63538263 // Network byte order
 #define DHCP_MAX_OPTIONS          256
 
  
 //
@@ -174,22 +68,22 @@ typedef struct {
 /// The options that matters to DHCP driver itself. The user of
 /// DHCP clients may be interested in other options, such as
 /// classless route, who can parse the DHCP offer to get them.
 ///
 typedef struct {
-  IP4_ADDR                  NetMask;  // DHCP_TAG_NETMASK
-  IP4_ADDR                  Router;   // DHCP_TAG_ROUTER, only the first 
router is used
+  IP4_ADDR                  NetMask;  // DHCP4_TAG_NETMASK
+  IP4_ADDR                  Router;   // DHCP4_TAG_ROUTER, only the first 
router is used
 
   //
   // DHCP specific options
   //
-  UINT8                     DhcpType; // DHCP_TAG_TYPE
-  UINT8                     Overload; // DHCP_TAG_OVERLOAD
-  IP4_ADDR                  ServerId; // DHCP_TAG_SERVER_ID
-  UINT32                    Lease;    // DHCP_TAG_LEASE
-  UINT32                    T1;       // DHCP_TAG_T1
-  UINT32                    T2;       // DHCP_TAG_T2
+  UINT8                     DhcpType; // DHCP4_TAG_MSG_TYPE
+  UINT8                     Overload; // DHCP4_TAG_OVERLOAD
+  IP4_ADDR                  ServerId; // DHCP4_TAG_SERVER_ID
+  UINT32                    Lease;    // DHCP4_TAG_LEASE
+  UINT32                    T1;       // DHCP4_TAG_T1
+  UINT32                    T2;       // DHCP4_TAG_T2
 } DHCP_PARAMETER;
 
 ///
 /// Structure used to describe and validate the format of DHCP options.
 /// Type is the options' data type, such as DHCP_OPTION_INT8. MinOccur
diff --git a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.c 
b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.c
index d574ce2..869a56a 100644
--- a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.c
+++ b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.c
@@ -1,9 +1,9 @@
 /** @file
   iSCSI DHCP related configuration routines.
 
-Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -220,11 +220,11 @@ IScsiDhcpSelectOffer (
     FreePool (OptionList);
     return EFI_NOT_READY;
   }
 
   for (Index = 0; Index < OptionCount; Index++) {
-    if (OptionList[Index]->OpCode != DHCP4_TAG_ROOT_PATH) {
+    if (OptionList[Index]->OpCode != DHCP4_TAG_ROOTPATH) {
       continue;
     }
 
     Status = IScsiDhcpExtractRootPath (
               (CHAR8 *) &OptionList[Index]->Data[0],
@@ -301,11 +301,11 @@ IScsiParseDhcpAck (
 
   for (Index = 0; Index < OptionCount; Index++) {
     //
     // Get DNS server addresses and DHCP server address from this offer.
     //
-    if (OptionList[Index]->OpCode == DHCP4_TAG_DNS) {
+    if (OptionList[Index]->OpCode == DHCP4_TAG_DNS_SERVER) {
 
       if (((OptionList[Index]->Length & 0x3) != 0) || 
(OptionList[Index]->Length == 0)) {
         Status = EFI_INVALID_PARAMETER;
         break;
       }
@@ -412,12 +412,12 @@ IScsiDoDhcp (
   ParaList->OpCode  = DHCP4_TAG_PARA_LIST;
   ParaList->Length  = (UINT8) (ConfigData->NvData.TargetInfoFromDhcp ? 4 : 3);
   Data = &ParaList->Data[0];
   Data[0] = DHCP4_TAG_NETMASK;
   Data[1] = DHCP4_TAG_ROUTER;
-  Data[2] = DHCP4_TAG_DNS;
-  Data[3] = DHCP4_TAG_ROOT_PATH;
+  Data[2] = DHCP4_TAG_DNS_SERVER;
+  Data[3] = DHCP4_TAG_ROOTPATH;
 
   ZeroMem (&Dhcp4ConfigData, sizeof (EFI_DHCP4_CONFIG_DATA));
   Dhcp4ConfigData.OptionCount = 1;
   Dhcp4ConfigData.OptionList  = &ParaList;
 
diff --git a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.h 
b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.h
index 77754b8..59f8672 100644
--- a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.h
+++ b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiDhcp.h
@@ -1,9 +1,9 @@
 /** @file
   The header file of IScsiDhcp.
 
-Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -15,16 +15,10 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 #ifndef _ISCSI_DHCP_H_
 #define _ISCSI_DHCP_H_
 
 #include <Protocol/Dhcp4.h>
 
-#define DHCP4_TAG_PARA_LIST             55
-#define DHCP4_TAG_NETMASK               1
-#define DHCP4_TAG_ROUTER                3
-#define DHCP4_TAG_DNS                   6
-#define DHCP4_TAG_SERVER_ID             54
-#define DHCP4_TAG_ROOT_PATH             17
 #define ISCSI_ROOT_PATH_ID              "iscsi:"
 #define ISCSI_ROOT_PATH_FIELD_DELIMITER ':'
 
 #define RP_FIELD_IDX_SERVERNAME         0
 #define RP_FIELD_IDX_PROTOCOL           1
diff --git a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiImpl.h 
b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiImpl.h
index 8c761f8..082199c 100644
--- a/MdeModulePkg/Universal/Network/IScsiDxe/IScsiImpl.h
+++ b/MdeModulePkg/Universal/Network/IScsiDxe/IScsiImpl.h
@@ -1,9 +1,9 @@
 /** @file
   The header file of IScsiImpl.c.
 
-Copyright (c) 2004 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -15,10 +15,12 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 #ifndef _ISCSI_IMPL_H_
 #define _ISCSI_IMPL_H_
 
 #include <Uefi.h>
 
+#include <IndustryStandard/Dhcp.h>
+
 #include <Library/BaseMemoryLib.h>
 #include <Library/MemoryAllocationLib.h>
 #include <Library/NetLib.h>
 #include <Library/PrintLib.h>
 #include <Library/UefiRuntimeServicesTableLib.h>
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.c 
b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.c
index d0fa132..3dc171c 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.c
@@ -872,11 +872,11 @@ Ip4Config2OnDhcp4Complete (
 
     for (Index = 0; Index < OptionCount; Index++) {
       //
       // Look for DNS Server opcode (6).
       //
-      if (OptionList[Index]->OpCode == DHCP_TAG_DNS_SERVER) {
+      if (OptionList[Index]->OpCode == DHCP4_TAG_DNS_SERVER) {
         if (((OptionList[Index]->Length & 0x3) != 0) || 
(OptionList[Index]->Length == 0)) {
           break;
         }
 
         Ip4Config2SetDnsServerWorker (Instance, OptionList[Index]->Length, 
&OptionList[Index]->Data[0]);
@@ -990,15 +990,15 @@ Ip4StartAutoConfig (
   //
   // Try to start the DHCP process. Use most of the current
   // DHCP configuration to avoid problems if some DHCP client
   // yields the control of this DHCP service to us.
   //
-  ParaList.Head.OpCode             = DHCP_TAG_PARA_LIST;
+  ParaList.Head.OpCode             = DHCP4_TAG_PARA_LIST;
   ParaList.Head.Length             = 3;
-  ParaList.Head.Data[0]            = DHCP_TAG_NETMASK;
-  ParaList.Route                   = DHCP_TAG_ROUTER;
-  ParaList.Dns                     = DHCP_TAG_DNS_SERVER;
+  ParaList.Head.Data[0]            = DHCP4_TAG_NETMASK;
+  ParaList.Route                   = DHCP4_TAG_ROUTER;
+  ParaList.Dns                     = DHCP4_TAG_DNS_SERVER;
   OptionList[0]                    = &ParaList.Head;
   Dhcp4Mode.ConfigData.OptionCount = 1;
   Dhcp4Mode.ConfigData.OptionList  = OptionList;
 
   Status = Dhcp4->Configure (Dhcp4, &Dhcp4Mode.ConfigData);
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.h 
b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.h
index 77bdc8d..b2665bd 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.h
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Config2Impl.h
@@ -23,15 +23,10 @@
 #define IP4_CONFIG2_VARIABLE_ATTRIBUTE    (EFI_VARIABLE_NON_VOLATILE | 
EFI_VARIABLE_BOOTSERVICE_ACCESS)
 
 #define DATA_ATTRIB_SIZE_FIXED              0x1
 #define DATA_ATTRIB_VOLATILE                0x2
 
-#define DHCP_TAG_PARA_LIST             55
-#define DHCP_TAG_NETMASK               1
-#define DHCP_TAG_ROUTER                3
-#define DHCP_TAG_DNS_SERVER            6
-
 #define DATA_ATTRIB_SET(Attrib, Bits)       (BOOLEAN)((Attrib) & (Bits))
 #define SET_DATA_ATTRIB(Attrib, Bits)       ((Attrib) |= (Bits))
 
 typedef struct _IP4_CONFIG2_INSTANCE IP4_CONFIG2_INSTANCE;
 
@@ -200,11 +195,11 @@ struct _IP4_CONFIG2_INSTANCE {
   IP4_CONFIG2_NVDATA                        Ip4NvData;
 };
 
 //
 // Configure the DHCP to request the routers and netmask
-// from server. The DHCP_TAG_NETMASK is included in Head.
+// from server. The DHCP4_TAG_NETMASK is included in Head.
 //
 #pragma pack(1)
 typedef struct {
   EFI_DHCP4_PACKET_OPTION Head;
   UINT8                   Route;
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h 
b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h
index e802b95..7a7ad9d 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Impl.h
@@ -1,9 +1,9 @@
 /** @file
   Ip4 internal functions and type defintions.
   
-Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2005 - 2016, Intel Corporation. All rights reserved.<BR>
 (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
 
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
@@ -26,10 +26,12 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 #include <Protocol/ManagedNetwork.h>
 #include <Protocol/Dhcp4.h>
 #include <Protocol/HiiConfigRouting.h>
 #include <Protocol/HiiConfigAccess.h>
 
+#include <IndustryStandard/Dhcp.h>
+
 #include <Library/DebugLib.h>
 #include <Library/UefiRuntimeServicesTableLib.h>
 #include <Library/UefiDriverEntryPoint.h>
 #include <Library/UefiBootServicesTableLib.h>
 #include <Library/BaseLib.h>
diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c 
b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
index 38f6303..d33d05a 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
@@ -18,17 +18,17 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 
 //
 // This is a map from the interested DHCP4 option tags' index to the tag value.
 //
 UINT8 mInterestedDhcp4Tags[PXEBC_DHCP4_TAG_INDEX_MAX] = {
-  PXEBC_DHCP4_TAG_BOOTFILE_LEN,
-  PXEBC_DHCP4_TAG_VENDOR,
-  PXEBC_DHCP4_TAG_OVERLOAD,
-  PXEBC_DHCP4_TAG_MSG_TYPE,
-  PXEBC_DHCP4_TAG_SERVER_ID,
-  PXEBC_DHCP4_TAG_CLASS_ID,
-  PXEBC_DHCP4_TAG_BOOTFILE
+  DHCP4_TAG_BOOTFILE_LEN,
+  DHCP4_TAG_VENDOR,
+  DHCP4_TAG_OVERLOAD,
+  DHCP4_TAG_MSG_TYPE,
+  DHCP4_TAG_SERVER_ID,
+  DHCP4_TAG_CLASS_ID,
+  DHCP4_TAG_BOOTFILE
 };
 
 
 /**
   This function initialize the DHCP4 message instance.
@@ -60,11 +60,11 @@ PxeBcInitSeedPacket (
   Header->HwType    = Mode.IfType;
   Header->HwAddrLen = (UINT8) Mode.HwAddressSize;
   CopyMem (Header->ClientHwAddr, &Mode.CurrentAddress, Header->HwAddrLen);
 
   Seed->Dhcp4.Magik     = PXEBC_DHCP4_MAGIC;
-  Seed->Dhcp4.Option[0] = PXEBC_DHCP4_TAG_EOP;
+  Seed->Dhcp4.Option[0] = DHCP4_TAG_EOP;
 }
 
 
 /**
   Copy the DCHP4 packet from srouce to destination.
@@ -883,11 +883,11 @@ PxeBcDhcpCallBack (
   // Override the Maximum DHCP Message Size.
   //
   MaxMsgSize = PxeBcParseExtendOptions (
                 Packet->Dhcp4.Option,
                 GET_OPTION_BUFFER_LEN (Packet),
-                PXEBC_DHCP4_TAG_MAXMSG
+                DHCP4_TAG_MAXMSG
                 );
   if (MaxMsgSize != NULL) {
     Value = HTONS (PXEBC_DHCP4_MAX_PACKET_SIZE);
     CopyMem (MaxMsgSize->Data, &Value, sizeof (Value));
   }
@@ -1010,61 +1010,61 @@ PxeBcBuildDhcpOptions (
 
   if (!IsDhcpDiscover) {
     //
     // Append message type.
     //
-    OptList[Index]->OpCode  = PXEBC_DHCP4_TAG_MSG_TYPE;
+    OptList[Index]->OpCode  = DHCP4_TAG_MSG_TYPE;
     OptList[Index]->Length  = 1;
     OptEnt.Mesg             = (PXEBC_DHCP4_OPTION_MESG *) OptList[Index]->Data;
     OptEnt.Mesg->Type       = PXEBC_DHCP4_MSG_TYPE_REQUEST;
     Index++;
     OptList[Index]          = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
 
     //
     // Append max message size.
     //
-    OptList[Index]->OpCode  = PXEBC_DHCP4_TAG_MAXMSG;
+    OptList[Index]->OpCode  = DHCP4_TAG_MAXMSG;
     OptList[Index]->Length  = (UINT8) sizeof 
(PXEBC_DHCP4_OPTION_MAX_MESG_SIZE);
     OptEnt.MaxMesgSize      = (PXEBC_DHCP4_OPTION_MAX_MESG_SIZE *) 
OptList[Index]->Data;
     Value                   = NTOHS (PXEBC_DHCP4_MAX_PACKET_SIZE);
     CopyMem (&OptEnt.MaxMesgSize->Size, &Value, sizeof (UINT16));
     Index++;
     OptList[Index]          = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
   }
   //
   // Parameter request list option.
   //
-  OptList[Index]->OpCode    = PXEBC_DHCP4_TAG_PARA_LIST;
+  OptList[Index]->OpCode    = DHCP4_TAG_PARA_LIST;
   OptList[Index]->Length    = 35;
   OptEnt.Para               = (PXEBC_DHCP4_OPTION_PARA *) OptList[Index]->Data;
-  OptEnt.Para->ParaList[0]  = PXEBC_DHCP4_TAG_NETMASK;
-  OptEnt.Para->ParaList[1]  = PXEBC_DHCP4_TAG_TIME_OFFSET;
-  OptEnt.Para->ParaList[2]  = PXEBC_DHCP4_TAG_ROUTER;
-  OptEnt.Para->ParaList[3]  = PXEBC_DHCP4_TAG_TIME_SERVER;
-  OptEnt.Para->ParaList[4]  = PXEBC_DHCP4_TAG_NAME_SERVER;
-  OptEnt.Para->ParaList[5]  = PXEBC_DHCP4_TAG_DNS_SERVER;
-  OptEnt.Para->ParaList[6]  = PXEBC_DHCP4_TAG_HOSTNAME;
-  OptEnt.Para->ParaList[7]  = PXEBC_DHCP4_TAG_BOOTFILE_LEN;
-  OptEnt.Para->ParaList[8]  = PXEBC_DHCP4_TAG_DOMAINNAME;
-  OptEnt.Para->ParaList[9]  = PXEBC_DHCP4_TAG_ROOTPATH;
-  OptEnt.Para->ParaList[10] = PXEBC_DHCP4_TAG_EXTEND_PATH;
-  OptEnt.Para->ParaList[11] = PXEBC_DHCP4_TAG_EMTU;
-  OptEnt.Para->ParaList[12] = PXEBC_DHCP4_TAG_TTL;
-  OptEnt.Para->ParaList[13] = PXEBC_DHCP4_TAG_BROADCAST;
-  OptEnt.Para->ParaList[14] = PXEBC_DHCP4_TAG_NIS_DOMAIN;
-  OptEnt.Para->ParaList[15] = PXEBC_DHCP4_TAG_NIS_SERVER;
-  OptEnt.Para->ParaList[16] = PXEBC_DHCP4_TAG_NTP_SERVER;
-  OptEnt.Para->ParaList[17] = PXEBC_DHCP4_TAG_VENDOR;
-  OptEnt.Para->ParaList[18] = PXEBC_DHCP4_TAG_REQUEST_IP;
-  OptEnt.Para->ParaList[19] = PXEBC_DHCP4_TAG_LEASE;
-  OptEnt.Para->ParaList[20] = PXEBC_DHCP4_TAG_SERVER_ID;
-  OptEnt.Para->ParaList[21] = PXEBC_DHCP4_TAG_T1;
-  OptEnt.Para->ParaList[22] = PXEBC_DHCP4_TAG_T2;
-  OptEnt.Para->ParaList[23] = PXEBC_DHCP4_TAG_CLASS_ID;
-  OptEnt.Para->ParaList[24] = PXEBC_DHCP4_TAG_TFTP;
-  OptEnt.Para->ParaList[25] = PXEBC_DHCP4_TAG_BOOTFILE;
-  OptEnt.Para->ParaList[26] = PXEBC_PXE_DHCP4_TAG_UUID;
+  OptEnt.Para->ParaList[0]  = DHCP4_TAG_NETMASK;
+  OptEnt.Para->ParaList[1]  = DHCP4_TAG_TIME_OFFSET;
+  OptEnt.Para->ParaList[2]  = DHCP4_TAG_ROUTER;
+  OptEnt.Para->ParaList[3]  = DHCP4_TAG_TIME_SERVER;
+  OptEnt.Para->ParaList[4]  = DHCP4_TAG_NAME_SERVER;
+  OptEnt.Para->ParaList[5]  = DHCP4_TAG_DNS_SERVER;
+  OptEnt.Para->ParaList[6]  = DHCP4_TAG_HOSTNAME;
+  OptEnt.Para->ParaList[7]  = DHCP4_TAG_BOOTFILE_LEN;
+  OptEnt.Para->ParaList[8]  = DHCP4_TAG_DOMAINNAME;
+  OptEnt.Para->ParaList[9]  = DHCP4_TAG_ROOTPATH;
+  OptEnt.Para->ParaList[10] = DHCP4_TAG_EXTEND_PATH;
+  OptEnt.Para->ParaList[11] = DHCP4_TAG_EMTU;
+  OptEnt.Para->ParaList[12] = DHCP4_TAG_TTL;
+  OptEnt.Para->ParaList[13] = DHCP4_TAG_BROADCAST;
+  OptEnt.Para->ParaList[14] = DHCP4_TAG_NIS_DOMAIN;
+  OptEnt.Para->ParaList[15] = DHCP4_TAG_NIS_SERVER;
+  OptEnt.Para->ParaList[16] = DHCP4_TAG_NTP_SERVER;
+  OptEnt.Para->ParaList[17] = DHCP4_TAG_VENDOR;
+  OptEnt.Para->ParaList[18] = DHCP4_TAG_REQUEST_IP;
+  OptEnt.Para->ParaList[19] = DHCP4_TAG_LEASE;
+  OptEnt.Para->ParaList[20] = DHCP4_TAG_SERVER_ID;
+  OptEnt.Para->ParaList[21] = DHCP4_TAG_T1;
+  OptEnt.Para->ParaList[22] = DHCP4_TAG_T2;
+  OptEnt.Para->ParaList[23] = DHCP4_TAG_CLASS_ID;
+  OptEnt.Para->ParaList[24] = DHCP4_TAG_TFTP;
+  OptEnt.Para->ParaList[25] = DHCP4_TAG_BOOTFILE;
+  OptEnt.Para->ParaList[26] = DHCP4_TAG_UUID;
   OptEnt.Para->ParaList[27] = 0x80;
   OptEnt.Para->ParaList[28] = 0x81;
   OptEnt.Para->ParaList[29] = 0x82;
   OptEnt.Para->ParaList[30] = 0x83;
   OptEnt.Para->ParaList[31] = 0x84;
@@ -1075,11 +1075,11 @@ PxeBcBuildDhcpOptions (
   OptList[Index]            = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
 
   //
   // Append UUID/Guid-based client identifier option
   //
-  OptList[Index]->OpCode  = PXEBC_PXE_DHCP4_TAG_UUID;
+  OptList[Index]->OpCode  = DHCP4_TAG_UUID;
   OptList[Index]->Length  = (UINT8) sizeof (PXEBC_DHCP4_OPTION_UUID);
   OptEnt.Uuid             = (PXEBC_DHCP4_OPTION_UUID *) OptList[Index]->Data;
   OptEnt.Uuid->Type       = 0;
   Index++;
   OptList[Index]          = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
@@ -1094,11 +1094,11 @@ PxeBcBuildDhcpOptions (
   }
 
   //
   // Append client network device interface option
   //
-  OptList[Index]->OpCode  = PXEBC_PXE_DHCP4_TAG_UNDI;
+  OptList[Index]->OpCode  = DHCP4_TAG_UNDI;
   OptList[Index]->Length  = (UINT8) sizeof (PXEBC_DHCP4_OPTION_UNDI);
   OptEnt.Undi             = (PXEBC_DHCP4_OPTION_UNDI *) OptList[Index]->Data;
   if (Private->Nii != NULL) {
     OptEnt.Undi->Type       = Private->Nii->Type;
     OptEnt.Undi->MajorVer   = Private->Nii->MajorVer;
@@ -1113,22 +1113,22 @@ PxeBcBuildDhcpOptions (
   OptList[Index] = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
 
   //
   // Append client system architecture option
   //
-  OptList[Index]->OpCode  = PXEBC_PXE_DHCP4_TAG_ARCH;
+  OptList[Index]->OpCode  = DHCP4_TAG_ARCH;
   OptList[Index]->Length  = (UINT8) sizeof (PXEBC_DHCP4_OPTION_ARCH);
   OptEnt.Arch             = (PXEBC_DHCP4_OPTION_ARCH *) OptList[Index]->Data;
   Value                   = HTONS (EFI_PXE_CLIENT_SYSTEM_ARCHITECTURE);
   CopyMem (&OptEnt.Arch->Type, &Value, sizeof (UINT16));
   Index++;
   OptList[Index]          = GET_NEXT_DHCP_OPTION (OptList[Index - 1]);
 
   //
   // Append client system architecture option
   //
-  OptList[Index]->OpCode  = PXEBC_DHCP4_TAG_CLASS_ID;
+  OptList[Index]->OpCode  = DHCP4_TAG_CLASS_ID;
   OptList[Index]->Length  = (UINT8) sizeof (PXEBC_DHCP4_OPTION_CLID);
   OptEnt.Clid             = (PXEBC_DHCP4_OPTION_CLID *) OptList[Index]->Data;
   CopyMem (OptEnt.Clid, DEFAULT_CLASS_ID_DATA, sizeof 
(PXEBC_DHCP4_OPTION_CLID));
   CvtNum (EFI_PXE_CLIENT_SYSTEM_ARCHITECTURE, OptEnt.Clid->ArchitectureType, 
sizeof (OptEnt.Clid->ArchitectureType));
 
@@ -1227,19 +1227,19 @@ PxeBcDiscvBootService (
     OptList[OptCount] = AllocatePool (VendorOptLen);
     if (OptList[OptCount] == NULL) {
       return EFI_OUT_OF_RESOURCES;
     }
 
-    OptList[OptCount]->OpCode     = PXEBC_DHCP4_TAG_VENDOR;
+    OptList[OptCount]->OpCode     = DHCP4_TAG_VENDOR;
     OptList[OptCount]->Length     = (UINT8) (VendorOptLen - 2);
     PxeOpt                        = (EFI_DHCP4_PACKET_OPTION *) 
OptList[OptCount]->Data;
     PxeOpt->OpCode                = PXEBC_VENDOR_TAG_BOOT_ITEM;
     PxeOpt->Length                = (UINT8) sizeof (PXEBC_OPTION_BOOT_ITEM);
     PxeBootItem                   = (PXEBC_OPTION_BOOT_ITEM *) PxeOpt->Data;
     PxeBootItem->Type             = HTONS (Type);
     PxeBootItem->Layer            = HTONS (*Layer);
-    PxeOpt->Data[PxeOpt->Length]  = PXEBC_DHCP4_TAG_EOP;
+    PxeOpt->Data[PxeOpt->Length]  = DHCP4_TAG_EOP;
 
     OptCount++;
   }
 
   Status = Dhcp4->Build (Dhcp4, &Private->SeedPacket, 0, NULL, OptCount, 
OptList, &Token.Packet);
@@ -1380,11 +1380,11 @@ PxeBcDiscvBootService (
   @param  Buffer     Pointer to the dhcp options packet.
   @param  Length     The length of the dhcp options.
   @param  OptTag     The option OpCode.
 
   @return NULL if the buffer length is 0 and OpCode is not
-          PXEBC_DHCP4_TAG_EOP, or the pointer to the buffer.
+          DHCP4_TAG_EOP, or the pointer to the buffer.
 
 **/
 EFI_DHCP4_PACKET_OPTION *
 PxeBcParseExtendOptions (
   IN UINT8                         *Buffer,
@@ -1396,18 +1396,18 @@ PxeBcParseExtendOptions (
   UINT32                  Offset;
 
   Option  = (EFI_DHCP4_PACKET_OPTION *) Buffer;
   Offset  = 0;
 
-  while (Offset < Length && Option->OpCode != PXEBC_DHCP4_TAG_EOP) {
+  while (Offset < Length && Option->OpCode != DHCP4_TAG_EOP) {
 
     if (Option->OpCode == OptTag) {
 
       return Option;
     }
 
-    if (Option->OpCode == PXEBC_DHCP4_TAG_PAD) {
+    if (Option->OpCode == DHCP4_TAG_PAD) {
       Offset++;
     } else {
       Offset += Option->Length + 2;
     }
 
@@ -1441,11 +1441,11 @@ PxeBcParseVendorOptions (
   BitMap          = VendorOption->BitMap;
   VendorOptionLen = Dhcp4Option->Length;
   PxeOption       = (EFI_DHCP4_PACKET_OPTION *) &Dhcp4Option->Data[0];
   Offset          = 0;
 
-  while ((Offset < VendorOptionLen) && (PxeOption->OpCode != 
PXEBC_DHCP4_TAG_EOP)) {
+  while ((Offset < VendorOptionLen) && (PxeOption->OpCode != DHCP4_TAG_EOP)) {
     //
     // Parse every Vendor Option and set its BitMap
     //
     switch (PxeOption->OpCode) {
 
@@ -1522,11 +1522,11 @@ PxeBcParseVendorOptions (
       break;
     }
 
     SET_VENDOR_OPTION_BIT_MAP (BitMap, PxeOption->OpCode);
 
-    if (PxeOption->OpCode == PXEBC_DHCP4_TAG_PAD) {
+    if (PxeOption->OpCode == DHCP4_TAG_PAD) {
       Offset++;
     } else {
       Offset = (UINT8) (Offset + PxeOption->Length + 2);
     }
 
diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h 
b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h
index 1626060..abdf05d 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.h
@@ -1,10 +1,10 @@
 /** @file
   Dhcp and Discover routines for PxeBc.
 
 Copyright (c) 2013, Red Hat, Inc.
-Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -27,50 +27,11 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER 
EXPRESS OR IMPLIED.
 
 #define PXEBC_DHCP4_OPCODE_REQUEST         1
 #define PXEBC_DHCP4_OPCODE_REPLY           2
 #define PXEBC_DHCP4_MSG_TYPE_REQUEST       3
 #define PXEBC_DHCP4_MAGIC                  0x63538263 // network byte order
-//
-// Dhcp Options
-//
-#define PXEBC_DHCP4_TAG_PAD                0    // Pad Option
-#define PXEBC_DHCP4_TAG_EOP                255  // End Option
-#define PXEBC_DHCP4_TAG_NETMASK            1    // Subnet Mask
-#define PXEBC_DHCP4_TAG_TIME_OFFSET        2    // Time Offset from UTC
-#define PXEBC_DHCP4_TAG_ROUTER             3    // Router option,
-#define PXEBC_DHCP4_TAG_TIME_SERVER        4    // Time Server
-#define PXEBC_DHCP4_TAG_NAME_SERVER        5    // Name Server
-#define PXEBC_DHCP4_TAG_DNS_SERVER         6    // Domain Name Server
-#define PXEBC_DHCP4_TAG_HOSTNAME           12   // Host Name
-#define PXEBC_DHCP4_TAG_BOOTFILE_LEN       13   // Boot File Size
-#define PXEBC_DHCP4_TAG_DUMP               14   // Merit Dump File
-#define PXEBC_DHCP4_TAG_DOMAINNAME         15   // Domain Name
-#define PXEBC_DHCP4_TAG_ROOTPATH           17   // Root path
-#define PXEBC_DHCP4_TAG_EXTEND_PATH        18   // Extensions Path
-#define PXEBC_DHCP4_TAG_EMTU               22   // Maximum Datagram Reassembly 
Size
-#define PXEBC_DHCP4_TAG_TTL                23   // Default IP Time-to-live
-#define PXEBC_DHCP4_TAG_BROADCAST          28   // Broadcast Address
-#define PXEBC_DHCP4_TAG_NIS_DOMAIN         40   // Network Information Service 
Domain
-#define PXEBC_DHCP4_TAG_NIS_SERVER         41   // Network Information Servers
-#define PXEBC_DHCP4_TAG_NTP_SERVER         42   // Network Time Protocol 
Servers
-#define PXEBC_DHCP4_TAG_VENDOR             43   // Vendor Specific Information
-#define PXEBC_DHCP4_TAG_REQUEST_IP         50   // Requested IP Address
-#define PXEBC_DHCP4_TAG_LEASE              51   // IP Address Lease Time
-#define PXEBC_DHCP4_TAG_OVERLOAD           52   // Option Overload
-#define PXEBC_DHCP4_TAG_MSG_TYPE           53   // DHCP Message Type
-#define PXEBC_DHCP4_TAG_SERVER_ID          54   // Server Identifier
-#define PXEBC_DHCP4_TAG_PARA_LIST          55   // Parameter Request List
-#define PXEBC_DHCP4_TAG_MAXMSG             57   // Maximum DHCP Message Size
-#define PXEBC_DHCP4_TAG_T1                 58   // Renewal (T1) Time Value
-#define PXEBC_DHCP4_TAG_T2                 59   // Rebinding (T2) Time Value
-#define PXEBC_DHCP4_TAG_CLASS_ID           60   // Vendor class identifier
-#define PXEBC_DHCP4_TAG_CLIENT_ID          61   // Client-identifier
-#define PXEBC_DHCP4_TAG_TFTP               66   // TFTP server name
-#define PXEBC_DHCP4_TAG_BOOTFILE           67   // Bootfile name
-#define PXEBC_PXE_DHCP4_TAG_ARCH           93
-#define PXEBC_PXE_DHCP4_TAG_UNDI           94
-#define PXEBC_PXE_DHCP4_TAG_UUID           97
+
 //
 // Sub-Options in Dhcp Vendor Option
 //
 #define PXEBC_VENDOR_TAG_MTFTP_IP          1
 #define PXEBC_VENDOR_TAG_MTFTP_CPORT       2
@@ -470,11 +431,11 @@ PxeBcCreateBootOptions (
   @param  Buffer     Pointer to the dhcp options packet.
   @param  Length     The length of the dhcp options.
   @param  OptTag     The option OpCode.
 
   @return NULL if the buffer length is 0 and OpCode is not 
-          PXEBC_DHCP4_TAG_EOP, or the pointer to the buffer.
+          DHCP4_TAG_EOP, or the pointer to the buffer.
 
 **/
 EFI_DHCP4_PACKET_OPTION *
 PxeBcParseExtendOptions (
   IN UINT8                         *Buffer,
diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h 
b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
index ce8d8ad..834c0d0 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.h
@@ -1,8 +1,8 @@
 /** @file
 
-Copyright (c) 2007 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2007 - 2016, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD 
License
 which accompanies this distribution.  The full text of the license may be 
found at
 http://opensource.org/licenses/bsd-license.php
 
@@ -19,10 +19,11 @@ typedef struct _PXEBC_PRIVATE_DATA  PXEBC_PRIVATE_DATA;
 
 #include <Uefi.h>
 
 #include <Guid/SmBios.h>
 #include <IndustryStandard/SmBios.h>
+#include <IndustryStandard/Dhcp.h>
 #include <Protocol/Dhcp4.h>
 #include <Protocol/PxeBaseCode.h>
 #include <Protocol/Mtftp4.h>
 #include <Protocol/Udp4.h>
 #include <Protocol/LoadFile.h>
-- 
1.9.5.msysgit.1

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