From 6f4e257601bfeadd494dff03bd7188762b934ab3 Mon Sep 17 00:00:00 2001
From: baohongde <baohongde@espressif.com>
Date: Thu, 26 Dec 2019 15:36:31 +0800
Subject: [PATCH] Increase TCP send buffer and receive window limitation when
 TCP window scale is enabled

---
 components/lwip/Kconfig | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/components/lwip/Kconfig b/components/lwip/Kconfig
index f03844147d..586bf0e02c 100644
--- a/components/lwip/Kconfig
+++ b/components/lwip/Kconfig
@@ -320,7 +320,8 @@ menu "LWIP"
         config LWIP_TCP_SND_BUF_DEFAULT
             int "Default send buffer size"
             default 5744  # 4 * default MSS
-            range 2440 65535
+            range 2440 65535 if !LWIP_WND_SCALE
+            range 2440 1024000 if LWIP_WND_SCALE
             help
                 Set default send buffer size for new TCP sockets.
 
@@ -336,7 +337,8 @@ menu "LWIP"
         config LWIP_TCP_WND_DEFAULT
             int "Default receive window size"
             default 5744 # 4 * default MSS
-            range 2440 65535
+            range 2440 65535 if !LWIP_WND_SCALE
+            range 2440 1024000 if LWIP_WND_SCALE
             help
                 Set default TCP receive window size for new TCP sockets.