[dpdk-dev] [v3] telemetry: fix json output buffer size

[Gowrishankar Muthukrishnan]

Fix json output buffer size for a single largest value.
Also fix compile assertion for the size of output buffer.

Fixes: 52af6ccb2b39 ("telemetry: add utility functions for creating JSON")

Signed-off-by: Gowrishankar Muthukrishnan <gmuthukri...@marvell.com>
---
v3:
 - use "len" param as buffer size.

---
 lib/telemetry/telemetry_json.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/telemetry/telemetry_json.h b/lib/telemetry/telemetry_json.h
index ad270b9b30..f02a12f5b0 100644
--- a/lib/telemetry/telemetry_json.h
+++ b/lib/telemetry/telemetry_json.h
@@ -9,6 +9,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <rte_common.h>
+#include <rte_telemetry.h>
 
 /**
  * @file
@@ -23,13 +24,13 @@
  * @internal
  * Copies a value into a buffer if the buffer has enough available space.
  * Nothing written to buffer if an overflow ocurs.
- * This function is not for use for values larger than 1k.
+ * This function is not for use for values larger than given buffer length.
  */
 __rte_format_printf(3, 4)
 static inline int
 __json_snprintf(char *buf, const int len, const char *format, ...)
 {
-       char tmp[1024];
+       char tmp[len];
        va_list ap;
        int ret;
 
-- 
2.25.1