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-rw-r--r--net/batman-adv/log.h143
1 files changed, 143 insertions, 0 deletions
diff --git a/net/batman-adv/log.h b/net/batman-adv/log.h
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+++ b/net/batman-adv/log.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 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_ */