1 files changed, 35 insertions, 0 deletions
diff --git a/lib/util/logging.h b/lib/util/logging.h
new file mode 100644
index 0000000..16c4e74
--- /dev/null
+++ b/lib/util/logging.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __LOGGING_H
+#define __LOGGING_H
+
+/* This matches the libbpf logging levels, but with an additional VERBOSE level;
+ * we demote all libbpf messages by one level so debug messages only show up on
+ * VERBOSE.
+ */
+enum logging_print_level {
+	LOG_WARN,
+	LOG_INFO,
+	LOG_DEBUG,
+	LOG_VERBOSE,
+};
+
+extern void logging_print(enum logging_print_level level, const char *format,
+			  ...) __attribute__((format(printf, 2, 3)));
+
+#define __pr(level, fmt, ...)                             \
+	do {                                              \
+		logging_print(level, fmt, ##__VA_ARGS__); \
+	} while (0)
+
+#define pr_warn(fmt, ...) __pr(LOG_WARN, fmt, ##__VA_ARGS__)
+#define pr_info(fmt, ...) __pr(LOG_INFO, fmt, ##__VA_ARGS__)
+#define pr_debug(fmt, ...) __pr(LOG_DEBUG, fmt, ##__VA_ARGS__)
+
+void init_lib_logging(void);
+void silence_libbpf_logging(void);
+void silence_libxdp_logging(void);
+enum logging_print_level set_log_level(enum logging_print_level level);
+enum logging_print_level increase_log_level();
+
+#endif