xref: /openbmc/linux/net/batman-adv/log.h (revision de2bdb3d)
1 /* Copyright (C) 2007-2016  B.A.T.M.A.N. contributors:
2  *
3  * Marek Lindner, Simon Wunderlich
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of version 2 of the GNU General Public
7  * License as published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #ifndef _NET_BATMAN_ADV_LOG_H_
19 #define _NET_BATMAN_ADV_LOG_H_
20 
21 #include "main.h"
22 
23 #include <linux/bitops.h>
24 #include <linux/compiler.h>
25 #include <linux/printk.h>
26 
27 #ifdef CONFIG_BATMAN_ADV_DEBUG
28 
29 int batadv_debug_log_setup(struct batadv_priv *bat_priv);
30 void batadv_debug_log_cleanup(struct batadv_priv *bat_priv);
31 
32 #else
33 
34 static inline int batadv_debug_log_setup(struct batadv_priv *bat_priv)
35 {
36 	return 0;
37 }
38 
39 static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
40 {
41 }
42 
43 #endif
44 
45 /**
46  * enum batadv_dbg_level - available log levels
47  * @BATADV_DBG_BATMAN: OGM and TQ computations related messages
48  * @BATADV_DBG_ROUTES: route added / changed / deleted
49  * @BATADV_DBG_TT: translation table messages
50  * @BATADV_DBG_BLA: bridge loop avoidance messages
51  * @BATADV_DBG_DAT: ARP snooping and DAT related messages
52  * @BATADV_DBG_NC: network coding related messages
53  * @BATADV_DBG_MCAST: multicast related messages
54  * @BATADV_DBG_TP_METER: throughput meter messages
55  * @BATADV_DBG_ALL: the union of all the above log levels
56  */
57 enum batadv_dbg_level {
58 	BATADV_DBG_BATMAN	= BIT(0),
59 	BATADV_DBG_ROUTES	= BIT(1),
60 	BATADV_DBG_TT		= BIT(2),
61 	BATADV_DBG_BLA		= BIT(3),
62 	BATADV_DBG_DAT		= BIT(4),
63 	BATADV_DBG_NC		= BIT(5),
64 	BATADV_DBG_MCAST	= BIT(6),
65 	BATADV_DBG_TP_METER	= BIT(7),
66 	BATADV_DBG_ALL		= 255,
67 };
68 
69 #ifdef CONFIG_BATMAN_ADV_DEBUG
70 int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
71 __printf(2, 3);
72 
73 /* possibly ratelimited debug output */
74 #define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...)	\
75 	do {							\
76 		if (atomic_read(&bat_priv->log_level) & type && \
77 		    (!ratelimited || net_ratelimit()))		\
78 			batadv_debug_log(bat_priv, fmt, ## arg);\
79 	}							\
80 	while (0)
81 #else /* !CONFIG_BATMAN_ADV_DEBUG */
82 __printf(4, 5)
83 static inline void _batadv_dbg(int type __always_unused,
84 			       struct batadv_priv *bat_priv __always_unused,
85 			       int ratelimited __always_unused,
86 			       const char *fmt __always_unused, ...)
87 {
88 }
89 #endif
90 
91 #define batadv_dbg(type, bat_priv, arg...) \
92 	_batadv_dbg(type, bat_priv, 0, ## arg)
93 #define batadv_dbg_ratelimited(type, bat_priv, arg...) \
94 	_batadv_dbg(type, bat_priv, 1, ## arg)
95 
96 #define batadv_info(net_dev, fmt, arg...)				\
97 	do {								\
98 		struct net_device *_netdev = (net_dev);                 \
99 		struct batadv_priv *_batpriv = netdev_priv(_netdev);    \
100 		batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg);	\
101 		pr_info("%s: " fmt, _netdev->name, ## arg);		\
102 	} while (0)
103 #define batadv_err(net_dev, fmt, arg...)				\
104 	do {								\
105 		struct net_device *_netdev = (net_dev);                 \
106 		struct batadv_priv *_batpriv = netdev_priv(_netdev);    \
107 		batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg);	\
108 		pr_err("%s: " fmt, _netdev->name, ## arg);		\
109 	} while (0)
110 
111 #endif /* _NET_BATMAN_ADV_LOG_H_ */
112