From 8d5514603e2bf5645fa775997602697d9f8474a0 Mon Sep 17 00:00:00 2001
From: Simon Goldschmidt <goldsimon@gmx.de>
Date: Wed, 21 Sep 2011 18:47:44 +0200
Subject: [PATCH] fixed default value of TCP_SND_BUF to not violate the sanity
 checks in init.c

---
 CHANGELOG              | 4 ++++
 src/include/lwip/opt.h | 8 +++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 36118e4c..82644b70 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -61,6 +61,10 @@ HISTORY
 
  ++ Bugfixes:
 
+  2011-09-21: Simon Goldschmidt
+  * opt.h: fixed default value of TCP_SND_BUF to not violate the sanity checks
+    in init.c
+
   2011-09-20: Simon Goldschmidt
   * timers.c: fixed bug #34337 (possible NULL pointer in sys_check_timeouts)
 
diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index 70d64bfe..cd1e47d6 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -968,10 +968,11 @@
 
 
 /**
- * TCP_SND_BUF: TCP sender buffer space (bytes). 
+ * TCP_SND_BUF: TCP sender buffer space (bytes).
+ * To achieve good performance, this should be at least 2 * TCP_MSS.
  */
 #ifndef TCP_SND_BUF
-#define TCP_SND_BUF                     256
+#define TCP_SND_BUF                     (2 * TCP_MSS)
 #endif
 
 /**
@@ -1434,7 +1435,8 @@
 #endif
 
 /**
- * LWIP_SO_RCVTIMEO==1: Enable SO_RCVTIMEO processing.
+ * LWIP_SO_RCVTIMEO==1: Enable receive timeout for sockets/netconns and
+ * SO_RCVTIMEO processing.
  */
 #ifndef LWIP_SO_RCVTIMEO
 #define LWIP_SO_RCVTIMEO                0
-- 
2.39.2