From 83616c9f2b8e75409293ace56e319996313e1c9c Mon Sep 17 00:00:00 2001
From: armink <armink.ztl@gmail.com>
Date: Sat, 19 Aug 2017 20:22:08 +0800
Subject: [PATCH] [LWIP] Add tftp max file name len config to LwIP 2.0.2
 `lwipopts.h` .

---
 components/net/lwip-2.0.2/src/lwipopts.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/components/net/lwip-2.0.2/src/lwipopts.h b/components/net/lwip-2.0.2/src/lwipopts.h
index 33861dd574..d846cf2fb0 100644
--- a/components/net/lwip-2.0.2/src/lwipopts.h
+++ b/components/net/lwip-2.0.2/src/lwipopts.h
@@ -446,4 +446,22 @@
 #define SO_REUSE                        0
 #endif
 
+/*
+   ------------------------------------
+   ------- Applications options -------
+   ------------------------------------
+*/
+
+/**
+ * Max. length of TFTP filename
+ */
+#ifdef RT_LWIP_TFTP_MAX_FILENAME_LEN
+#define TFTP_MAX_FILENAME_LEN           RT_LWIP_TFTP_MAX_FILENAME_LEN
+#elif defined(RT_DFS_ELM_MAX_LFN)
+#define TFTP_MAX_FILENAME_LEN           RT_DFS_ELM_MAX_LFN
+#else
+#define TFTP_MAX_FILENAME_LEN           64
+#endif
+
+
 #endif /* __LWIPOPTS_H__ */
-- 
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