From 497856d5d97d620ae50243edadb95630e464779d Mon Sep 17 00:00:00 2001
From: Stefan Lankes <lankes@lfbs.rwth-aachen.de>
Date: Thu, 1 Sep 2011 21:33:40 +0200
Subject: [PATCH] fine tuning to optimize LwIP

---
 lwip/src/include/lwipopts.h | 59 +++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 3 deletions(-)

diff --git a/lwip/src/include/lwipopts.h b/lwip/src/include/lwipopts.h
index 4ecdc944..c0a50e0a 100644
--- a/lwip/src/include/lwipopts.h
+++ b/lwip/src/include/lwipopts.h
@@ -62,7 +62,7 @@
 /**
  * TCP_SND_BUF: TCP sender buffer space (bytes). 
  */
-#define TCP_SND_BUF		2048
+#define TCP_SND_BUF		(16*1024)
 
 /**
  * LWIP_BROADCAST_PING==1: respond to broadcast pings (default is unicast only)
@@ -118,15 +118,68 @@
  */
 #define DEFAULT_THREAD_PRIO	NORMAL_PRIO
 
+/**
+ * TCP_MSS: TCP Maximum segment size. (default is 536, a conservative default,
+ * you might want to increase this.)
+ * For the receive side, this MSS is advertised to the remote side
+ * when opening a connection. For the transmit size, this MSS sets
+ * an upper limit on the MSS advertised by the remote host.
+ */
+#define TCP_MSS			2048
+
+/**
+ * PBUF_POOL_SIZE: the number of buffers in the pbuf pool. 
+ */
+#define PBUF_POOL_SIZE		0x80
+
+/**
+ * MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
+ * per active UDP "connection".
+ * (requires the LWIP_UDP option)
+ */
+#define MEMP_NUM_UDP_PCB	0x30
+
+/**
+ * MEMP_NUM_TCP_PCB: the number of simulatenously active TCP connections.
+ * (requires the LWIP_TCP option)
+ */
+#define MEMP_NUM_TCP_PCB	0x30
+
+/**
+ * MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP connections.
+ * (requires the LWIP_TCP option)
+ */
+#define MEMP_NUM_TCP_PCB_LISTEN	0x30
+
+/**
+ * MEM_SIZE: the size of the heap memory. If the application will send
+ * a lot of data that needs to be copied, this should be set high.
+ */
+#define MEM_SIZE		(4*0x100000)
+
+/**
+ * MEMP_NUM_TCPIP_MSG_API: the number of struct tcpip_msg, which are used
+ * for callback/timeout API communication. 
+ * (only needed if you use tcpip.c)
+ */
+#define MEMP_NUM_TCPIP_MSG_API		0x40
+
+/**
+ * MEMP_NUM_TCPIP_MSG_INPKT: the number of struct tcpip_msg, which are used
+ * for incoming packets. 
+ * (only needed if you use tcpip.c)
+ */
+#define MEMP_NUM_TCPIP_MSG_INPKT	0x40
+
 /* DEBUG options */
 #define LWIP_DEBUG		1
 #define DHCP_DEBUG		LWIP_DBG_OFF
 #define ETHARP_DEBUG		LWIP_DBG_OFF
 #define TCPIP_DEBUG		LWIP_DBG_OFF
-#define SYS_DEBUG		LWIP_DBG_OFF
+#define SYS_DEBUG		LWIP_DBG_ON
 #define RAW_DEBUG		LWIP_DBG_OFF
 #define MEM_DEBUG		LWIP_DBG_OFF
-#define IP_DEBUG		LWIP_DBG_OFF
+#define IP_DEBUG		LWIP_DBG_ON
 #define INET_DEBUG		LWIP_DBG_OFF
 #define NETIF_DEBUG		LWIP_DBG_ON
 #define TIMERS_DEBUG		LWIP_DBG_OFF