1. Add Link MTU support to IP4 and TCP4 driver.

[mirror_edk2.git] / MdeModulePkg / Universal / Network / Tcp4Dxe / Tcp4Misc.c

diff --git a/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Misc.c b/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Misc.c
index ce66231e226cd3e215f128705586be8320dcfec4..f565d2f3d0eda06f3055c303b8c24240da31e80e 100644 (file)
--- a/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Misc.c
+++ b/MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Misc.c
@@ -471,7 +471,7 @@ TcpGetRcvMss (
   IN SOCKET  *Sock\r
   )\r
 {\r
-  EFI_SIMPLE_NETWORK_MODE SnpMode;\r
+  EFI_IP4_MODE_DATA       Ip4Mode;\r
   TCP4_PROTO_DATA         *TcpProto;\r
   EFI_IP4_PROTOCOL        *Ip;\r
 \r
@@ -481,9 +481,9 @@ TcpGetRcvMss (
   Ip       = (EFI_IP4_PROTOCOL *) (TcpProto->TcpService->IpIo->Ip);\r
   ASSERT (Ip != NULL);\r
 \r
-  Ip->GetModeData (Ip, NULL, NULL, &SnpMode);\r
+  Ip->GetModeData (Ip, &Ip4Mode, NULL, NULL);\r
 \r
-  return (UINT16) (SnpMode.MaxPacketSize - 40);\r
+  return (UINT16) (Ip4Mode.MaxPacketSize - sizeof (TCP_HEAD));\r
 }\r
 \r
 \r