add a debug message showing interface availability changes

[project/netifd.git] / netifd.h

diff --git a/netifd.h b/netifd.h
index fc2b6a7..a368d9b 100644 (file)
--- a/netifd.h
+++ b/netifd.h
@@ -13,6 +13,26 @@
 
 #include "utils.h"
 
+extern unsigned int debug_mask;
+
+enum {
+       DEBUG_SYSTEM    = 0,
+       DEBUG_DEVICE    = 1,
+       DEBUG_INTERFACE = 2,
+};
+
+#ifdef DEBUG
+#define DPRINTF(format, ...) fprintf(stderr, "%s(%d): " format, __func__, __LINE__, ## __VA_ARGS__)
+#define D(level, format, ...) if (debug_mask & (1 << (DEBUG_ ## level))) DPRINTF(format, ##__VA_ARGS__)
+#else
+#define DPRINTF(format, ...) no_debug(0, format, ## __VA_ARGS__)
+#define D(level, format, ...) no_debug(DEBUG_ ## level, format, ## __VA_ARGS__)
+#endif
+
+static inline void no_debug(int level, const char *fmt, ...)
+{
+}
+
 struct device;
 struct interface;