1 files changed, 143 insertions, 0 deletions
diff --git a/net/batman-adv/log.h b/net/batman-adv/log.h
new file mode 100644
index 000000000..979864c0f
--- /dev/null
+++ b/net/batman-adv/log.h
@@ -0,0 +1,143 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2007-2020  B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ */
+
+#ifndef _NET_BATMAN_ADV_LOG_H_
+#define _NET_BATMAN_ADV_LOG_H_
+
+#include "main.h"
+
+#include <linux/atomic.h>
+#include <linux/bitops.h>
+#include <linux/compiler.h>
+#include <linux/printk.h>
+
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+
+int batadv_debug_log_setup(struct batadv_priv *bat_priv);
+void batadv_debug_log_cleanup(struct batadv_priv *bat_priv);
+
+#else
+
+static inline int batadv_debug_log_setup(struct batadv_priv *bat_priv)
+{
+	return 0;
+}
+
+static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
+{
+}
+
+#endif
+
+/**
+ * enum batadv_dbg_level - available log levels
+ */
+enum batadv_dbg_level {
+	/** @BATADV_DBG_BATMAN: OGM and TQ computations related messages */
+	BATADV_DBG_BATMAN	= BIT(0),
+
+	/** @BATADV_DBG_ROUTES: route added / changed / deleted */
+	BATADV_DBG_ROUTES	= BIT(1),
+
+	/** @BATADV_DBG_TT: translation table messages */
+	BATADV_DBG_TT		= BIT(2),
+
+	/** @BATADV_DBG_BLA: bridge loop avoidance messages */
+	BATADV_DBG_BLA		= BIT(3),
+
+	/** @BATADV_DBG_DAT: ARP snooping and DAT related messages */
+	BATADV_DBG_DAT		= BIT(4),
+
+	/** @BATADV_DBG_NC: network coding related messages */
+	BATADV_DBG_NC		= BIT(5),
+
+	/** @BATADV_DBG_MCAST: multicast related messages */
+	BATADV_DBG_MCAST	= BIT(6),
+
+	/** @BATADV_DBG_TP_METER: throughput meter messages */
+	BATADV_DBG_TP_METER	= BIT(7),
+
+	/** @BATADV_DBG_ALL: the union of all the above log levels */
+	BATADV_DBG_ALL		= 255,
+};
+
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
+__printf(2, 3);
+
+/**
+ * _batadv_dbg() - Store debug output with(out) rate limiting
+ * @type: type of debug message
+ * @bat_priv: the bat priv with all the soft interface information
+ * @ratelimited: whether output should be rate limited
+ * @fmt: format string
+ * @arg: variable arguments
+ */
+#define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...)		\
+	do {								\
+		struct batadv_priv *__batpriv = (bat_priv);		\
+		if (atomic_read(&__batpriv->log_level) & (type) &&	\
+		    (!(ratelimited) || net_ratelimit()))		\
+			batadv_debug_log(__batpriv, fmt, ## arg);	\
+	}								\
+	while (0)
+#else /* !CONFIG_BATMAN_ADV_DEBUG */
+__printf(4, 5)
+static inline void _batadv_dbg(int type __always_unused,
+			       struct batadv_priv *bat_priv __always_unused,
+			       int ratelimited __always_unused,
+			       const char *fmt __always_unused, ...)
+{
+}
+#endif
+
+/**
+ * batadv_dbg() - Store debug output without rate limiting
+ * @type: type of debug message
+ * @bat_priv: the bat priv with all the soft interface information
+ * @arg: format string and variable arguments
+ */
+#define batadv_dbg(type, bat_priv, arg...) \
+	_batadv_dbg(type, bat_priv, 0, ## arg)
+
+/**
+ * batadv_dbg_ratelimited() - Store debug output with rate limiting
+ * @type: type of debug message
+ * @bat_priv: the bat priv with all the soft interface information
+ * @arg: format string and variable arguments
+ */
+#define batadv_dbg_ratelimited(type, bat_priv, arg...) \
+	_batadv_dbg(type, bat_priv, 1, ## arg)
+
+/**
+ * batadv_info() - Store message in debug buffer and print it to kmsg buffer
+ * @net_dev: the soft interface net device
+ * @fmt: format string
+ * @arg: variable arguments
+ */
+#define batadv_info(net_dev, fmt, arg...)				\
+	do {								\
+		struct net_device *_netdev = (net_dev);                 \
+		struct batadv_priv *_batpriv = netdev_priv(_netdev);    \
+		batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg);	\
+		pr_info("%s: " fmt, _netdev->name, ## arg);		\
+	} while (0)
+
+/**
+ * batadv_err() - Store error in debug buffer and print it to kmsg buffer
+ * @net_dev: the soft interface net device
+ * @fmt: format string
+ * @arg: variable arguments
+ */
+#define batadv_err(net_dev, fmt, arg...)				\
+	do {								\
+		struct net_device *_netdev = (net_dev);                 \
+		struct batadv_priv *_batpriv = netdev_priv(_netdev);    \
+		batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg);	\
+		pr_err("%s: " fmt, _netdev->name, ## arg);		\
+	} while (0)
+
+#endif /* _NET_BATMAN_ADV_LOG_H_ */