Merge pull request #115 from rgrr/feature/misc5

playing around with network parameters and other unimportant things

Author: rgrr

include/lwipopts.h

@@ -69,11 +69,13 @@
 #define TCP_MSS                                (1500 - 20 - 20)    // MTU minus header sizes (best value til now)
 #define TCP_SND_BUF                            (8 * TCP_MSS)       //   good tuning
 
-//#define TCP_WND                                TCP_SND_BUF         // til now no good value found
+#define TCP_WND                                (4 * TCP_MSS)       // til now no good value found
 #define TCP_SND_QUEUELEN                       16
 #define TCP_SNDQUEUELOWAT                      (TCP_SND_QUEUELEN / 2)
 #define MEMP_NUM_TCP_SEG                       32
 
+#define PBUF_POOL_SIZE                         4
+
 //--------------------------------------
 // memory
 #define MEM_SIZE                               20000

src/net/tinyusb/ncm.h

@@ -29,15 +29,16 @@
 #define _TUSB_NCM_H_
 
 #include "common/tusb_common.h"
+#include "lwipopts.h"
 
 
 #ifndef CFG_TUD_NCM_IN_NTB_MAX_SIZE
     /// must be >> MTU
-    #define CFG_TUD_NCM_IN_NTB_MAX_SIZE        3200
+    #define CFG_TUD_NCM_IN_NTB_MAX_SIZE        (2 * TCP_MSS + 100)     // can be set to 2048 without impact
 #endif
 #ifndef CFG_TUD_NCM_OUT_NTB_MAX_SIZE
     /// must be >> MTU
-    #define CFG_TUD_NCM_OUT_NTB_MAX_SIZE       3200
+    #define CFG_TUD_NCM_OUT_NTB_MAX_SIZE       (2 * TCP_MSS + 100)     // can be set to smaller values if .wNtbOutMaxDatagrams==1
 #endif
 
 #ifndef CFG_TUD_NCM_OUT_NTB_N