From 77f0305ef0099efa6b6422d46b3c7bb4f8250526 Mon Sep 17 00:00:00 2001
From: goldsimon <goldsimon@gmx.de>
Date: Wed, 19 Oct 2011 12:55:32 +0200
Subject: [PATCH] Fix default value of TCP_SNDLOWAT for small values of
 TCP_SND_BUF (broken with my 2nd-last commit)

---
 src/include/lwip/opt.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index 48581e5a..119e3252 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -978,7 +978,7 @@
  * TCP snd_buf for select to return writable (combined with TCP_SNDQUEUELOWAT).
  */
 #ifndef TCP_SNDLOWAT
-#define TCP_SNDLOWAT                    LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1)
+#define TCP_SNDLOWAT                    LWIP_MIN(LWIP_MAX(((TCP_SND_BUF)/2), (2 * TCP_MSS) + 1), (TCP_SND_BUF) - 1)
 #endif
 
 /**