1. Add EFI_COMPONENT_NAME2_PROTOCOL.GetControllerName() support.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / Ip4Dxe / Ip4Output.c

diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.c
index 7d8745d5a5b2208ef410f4c45c5dd28821a9a2ff..7ff17b6637936e361e37eea86ddac35d19de5aba 100644 (file)
--- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.c
+++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Output.c
@@ -1,8 +1,8 @@
 /** @file\r
   Transmit the IP4 packet.\r
   \r
-Copyright (c) 2005 - 2009, Intel Corporation.<BR>\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2005 - 2012, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
 http://opensource.org/licenses/bsd-license.php\r
@@ -204,6 +204,10 @@ Ip4SysPacketSent (
   @retval EFI_NO_MAPPING       There is no interface to the destination.\r
   @retval EFI_NOT_FOUND        There is no route to the destination\r
   @retval EFI_SUCCESS          The packet is successfully transmitted.\r
+  @retval EFI_BAD_BUFFER_SIZE  The length of the IPv4 header + option length +\r
+                               total data length is greater than MTU (or greater\r
+                               than the maximum packet size if Token.Packet.TxData.\r
+                               OverrideData.DoNotFragment is TRUE.)\r
   @retval Others               Failed to transmit the packet.\r
 \r
 **/\r
@@ -231,6 +235,7 @@ Ip4Output (
   UINT32                    Offset;\r
   UINT32                    Mtu;\r
   UINT32                    Num;\r
+  BOOLEAN                   RawData;\r
 \r
   //\r
   // Select an interface/source for system packet, application\r
@@ -250,6 +255,38 @@ Ip4Output (
     Head->Src = IpIf->Ip;\r
   }\r
 \r
+  //\r
+  // Before IPsec process, prepared the IP head.\r
+  // If Ip4Output is transmitting RawData, don't update IPv4 header.\r
+  //\r
+  HeadLen = sizeof (IP4_HEAD) + ((OptLen + 3) & (~0x03));\r
+\r
+  if ((IpInstance != NULL) && IpInstance->ConfigData.RawData) {\r
+    RawData        = TRUE;\r
+  } else {\r
+    Head->HeadLen  = (UINT8) (HeadLen >> 2);\r
+    Head->Id       = mIp4Id++;\r
+    Head->Ver      = 4;\r
+    RawData        = FALSE;\r
+  }\r
+  \r
+  //\r
+  // Call IPsec process.\r
+  //\r
+  Status = Ip4IpSecProcessPacket (\r
+             IpSb, \r
+             &Head, \r
+             &Packet, \r
+             &Option, \r
+             &OptLen, \r
+             EfiIPsecOutBound,\r
+             Context\r
+             );\r
+\r
+  if (EFI_ERROR(Status)) {\r
+    return Status;\r
+  }\r
+\r
   //\r
   // Route the packet unless overrided, that is, GateWay isn't zero.\r
   //\r
@@ -291,32 +328,20 @@ Ip4Output (
     }\r
   }\r
 \r
-  //\r
-  // TODO: currently Option/OptLen are not included into encryption scope.\r
-  //\r
-  Status = Ip4IpSecProcessPacket (\r
-             IpSb, \r
-             Head, \r
-             &Packet, \r
-             Option, \r
-             OptLen, \r
-             EfiIPsecOutBound,\r
-             Context\r
-             );\r
-\r
-  if (EFI_ERROR(Status)) {\r
-    return Status;\r
-  }\r
-\r
   //\r
   // OK, selected the source and route, fragment the packet then send\r
   // them. Tag each fragment other than the first one as spawn from it.\r
   //\r
-  Mtu            = IpSb->MaxPacketSize + sizeof (IP4_HEAD);\r
-  HeadLen        = sizeof (IP4_HEAD) + ((OptLen + 3) & (~0x03));\r
-  Head->Id       = mIp4Id++;\r
+  Mtu = IpSb->MaxPacketSize + sizeof (IP4_HEAD);  \r
 \r
   if (Packet->TotalSize + HeadLen > Mtu) {\r
+    //\r
+    // Fragmentation is diabled for RawData mode.\r
+    //\r
+    if (RawData) {\r
+      return EFI_BAD_BUFFER_SIZE;\r
+    }\r
+    \r
     //\r
     // Packet is fragmented from the tail to the head, that is, the\r
     // first frame sent is the last fragment of the packet. The first\r