From 2fff697f1eaaeba1e24fe0af381f39dc64b85061 Mon Sep 17 00:00:00 2001
From: Jiaxin Wu <Jiaxin.wu@intel.com>
Date: Fri, 21 Sep 2018 15:09:55 +0800
Subject: [PATCH] NetworkPkg: Define one PCD for PXE to specify MTFTP
 windowsize.

*v2: Rename and redefine the PCD in NetworkPkg instead of MdeModulePkg.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=886

This patch is to define one new PCD for PXE driver to specify MTFTP windowsize so as
to improve the PXE download performance. The default value is set to 4.

Cc: Ye Ting <ting.ye@intel.com>
Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Shao Ming <ming.shao@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Wu Jiaxin <jiaxin.wu@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
---
 NetworkPkg/NetworkPkg.dec | 6 ++++++
 NetworkPkg/NetworkPkg.uni | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/NetworkPkg/NetworkPkg.dec b/NetworkPkg/NetworkPkg.dec
index aae36226d5..6672d90fe1 100644
--- a/NetworkPkg/NetworkPkg.dec
+++ b/NetworkPkg/NetworkPkg.dec
@@ -92,6 +92,12 @@
   # @Prompt Indicates whether HTTP connections are permitted or not.
   gEfiNetworkPkgTokenSpaceGuid.PcdAllowHttpConnections|FALSE|BOOLEAN|0x00000008
 
+  ## This setting is to specify the MTFTP windowsize used by UEFI PXE driver.
+  # A value of 0 indicates the default value of windowsize(1).
+  # A non-zero value will be used as windowsize.
+  # @Prompt PXE TFTP windowsize.
+  gEfiNetworkPkgTokenSpaceGuid.PcdPxeTftpWindowSize|0x4|UINT64|0x10000008
+
 [PcdsFixedAtBuild, PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx]
   ## IPv6 DHCP Unique Identifier (DUID) Type configuration (From RFCs 3315 and 6355).
   # 01 = DUID Based on Link-layer Address Plus Time [DUID-LLT]
diff --git a/NetworkPkg/NetworkPkg.uni b/NetworkPkg/NetworkPkg.uni
index 5604b1bf32..3c7d40b2cb 100644
--- a/NetworkPkg/NetworkPkg.uni
+++ b/NetworkPkg/NetworkPkg.uni
@@ -55,6 +55,12 @@
                                                                                        "TRUE  - HTTP connections are allowed.\n"
                                                                                        "FALSE - HTTP connections are denied."
 
+#string STR_gEfiNetworkPkgTokenSpaceGuid_PcdPxeTftpWindowSize_PROMPT  #language en-US "This setting is to specify the MTFTP windowsize used by UEFI PXE driver."
+
+#string STR_gEfiNetworkPkgTokenSpaceGuid_PcdPxeTftpWindowSize_HELP  #language en-US "Specify MTFTP windowsize used by UEFI PXE driver.\n"
+                                                                                    "A value of 0 indicates the default value of windowsize(1).\n"
+                                                                                    "A non-zero value will be used as windowsize."
+
 #string STR_gEfiNetworkPkgTokenSpaceGuid_PcdIpsecCertificateEnabled_PROMPT  #language en-US "Enable IPsec IKEv2 Certificate Authentication."
 
 #string STR_gEfiNetworkPkgTokenSpaceGuid_PcdIpsecCertificateEnabled_HELP  #language en-US "Indicates if the IPsec IKEv2 Certificate Authentication feature is enabled or not.<BR><BR>\n"