X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FUniversal%2FNetwork%2FIp4Dxe%2FIp4Output.h;h=e833352c1b104c2d72f416c95ce4fb747b352793;hp=da3d8029d67bf0254a6debd7873db0bd00ab922b;hb=4f0f2316ed7699e233b362b83c7fbd63c2adf97e;hpb=3e8c18da0441069591e5aa218f378001b29512dd

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h
index da3d8029d6..e833352c1b 100644
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.h
@@ -1,7 +1,7 @@
 /** @file
 
-Copyright (c) 2005 - 2006, Intel Corporation.<BR>
-All rights reserved. This program and the accompanying materials
+Copyright (c) 2005 - 2006, 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
@@ -70,7 +70,7 @@ Ip4SysPacketSent (
 EFI_STATUS
 Ip4Output (
   IN IP4_SERVICE            *IpSb,
-  IN IP4_PROTOCOL           *IpInstance, OPTIONAL
+  IN IP4_PROTOCOL           *IpInstance  OPTIONAL,
   IN NET_BUF                *Packet,
   IN IP4_HEAD               *Head,
   IN UINT8                  *Option,
@@ -95,5 +95,32 @@ Ip4CancelPacket (
   IN EFI_STATUS       IoStatus
   );
 
+/**
+  Prepend an IP4 head to the Packet. It will copy the options and
+  build the IP4 header fields. Used for IP4 fragmentation.
+
+  @param  Packet           The packet to prepend IP4 header to
+  @param  Head             The caller supplied header. The caller should set
+                           the following header fields: Tos, TotalLen, Id,
+                           Fragment, Ttl, Protocol, Src and Dst. All the fields
+                           are in host byte order. This function will fill in
+                           the Ver, HeadLen, and checksum.
+  @param  Option           The orginal IP4 option to copy from
+  @param  OptLen           The length of the IP4 option
+
+  @retval EFI_BAD_BUFFER_SIZE  There is no enought room in the head space of
+                               Packet.
+  @retval EFI_SUCCESS          The IP4 header is successfully added to the packet.
+
+**/
+EFI_STATUS
+Ip4PrependHead (
+  IN OUT NET_BUF                *Packet,
+  IN     IP4_HEAD               *Head,
+  IN     UINT8                  *Option,
+  IN     UINT32                 OptLen
+  );
+
 extern UINT16  mIp4Id;
+
 #endif