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-rw-r--r--net/lwip/src/lwipopts.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/lwip/src/lwipopts.h b/net/lwip/src/lwipopts.h
index f002adc214..f5cc7a2e56 100644
--- a/net/lwip/src/lwipopts.h
+++ b/net/lwip/src/lwipopts.h
@@ -189,7 +189,11 @@
#define TCP_SNDLOWAT (TCP_SND_BUF/2)
/* TCP receive window. */
-#define TCP_WND 1500
+#ifdef RT_LWIP_TCP_WND
+#define TCP_WND RT_LWIP_TCP_WND
+#else
+#define TCP_WND 1500
+#endif
/* Maximum number of retransmissions of data segments. */
#define TCP_MAXRTX 12