Release 4.11 net/batman-adv/log.h

/* Copyright (C) 2007-2017  B.A.T.M.A.N. contributors:
 *
 * Marek Lindner, Simon Wunderlich
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _NET_BATMAN_ADV_LOG_H_

#define _NET_BATMAN_ADV_LOG_H_

#include "main.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;
}

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static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
{
}

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#endif

/**
 * enum batadv_dbg_level - available log levels
 * @BATADV_DBG_BATMAN: OGM and TQ computations related messages
 * @BATADV_DBG_ROUTES: route added / changed / deleted
 * @BATADV_DBG_TT: translation table messages
 * @BATADV_DBG_BLA: bridge loop avoidance messages
 * @BATADV_DBG_DAT: ARP snooping and DAT related messages
 * @BATADV_DBG_NC: network coding related messages
 * @BATADV_DBG_MCAST: multicast related messages
 * @BATADV_DBG_TP_METER: throughput meter messages
 * @BATADV_DBG_ALL: the union of all the above log levels
 */

enum batadv_dbg_level {
	
BATADV_DBG_BATMAN	= BIT(0),
	
BATADV_DBG_ROUTES	= BIT(1),
	
BATADV_DBG_TT		= BIT(2),
	
BATADV_DBG_BLA		= BIT(3),
	
BATADV_DBG_DAT		= BIT(4),
	
BATADV_DBG_NC		= BIT(5),
	
BATADV_DBG_MCAST	= BIT(6),
	
BATADV_DBG_TP_METER	= BIT(7),
	
BATADV_DBG_ALL		= 255,
};

#ifdef CONFIG_BATMAN_ADV_DEBUG
int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
__printf(2, 3);

/* possibly ratelimited debug output */

#define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...)		\
	do {                                                            \
                if (atomic_read(&(bat_priv)->log_level) & (type) &&     \
                    (!(ratelimited) || net_ratelimit()))                \
                        batadv_debug_log(bat_priv, 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, ...)
{
}
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#endif


#define batadv_dbg(type, bat_priv, arg...) \
	_batadv_dbg(type, bat_priv, 0, ## arg)

#define batadv_dbg_ratelimited(type, bat_priv, arg...) \
	_batadv_dbg(type, bat_priv, 1, ## arg)


#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)

#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_ */
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Directory: net/batman-adv

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