summaryrefslogtreecommitdiffstats
path: root/net/batman-adv/log.h
blob: 660e9bcc85a289295b3ab095f4dc4061e45101e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2007-2019  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;
}

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) ratelimiting
 * @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 ratelimiting
 * @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 ratelimiting
 * @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_ */