1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors:
3 *
4 * Marek Lindner, Simon Wunderlich
5 */
6
7 #ifndef _NET_BATMAN_ADV_LOG_H_
8 #define _NET_BATMAN_ADV_LOG_H_
9
10 #include "main.h"
11
12 #include <linux/atomic.h>
13 #include <linux/bitops.h>
14 #include <linux/compiler.h>
15 #include <linux/printk.h>
16
17 #ifdef CONFIG_BATMAN_ADV_DEBUG
18
19 int batadv_debug_log_setup(struct batadv_priv *bat_priv);
20 void batadv_debug_log_cleanup(struct batadv_priv *bat_priv);
21
22 #else
23
batadv_debug_log_setup(struct batadv_priv * bat_priv)24 static inline int batadv_debug_log_setup(struct batadv_priv *bat_priv)
25 {
26 return 0;
27 }
28
batadv_debug_log_cleanup(struct batadv_priv * bat_priv)29 static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
30 {
31 }
32
33 #endif
34
35 /**
36 * enum batadv_dbg_level - available log levels
37 */
38 enum batadv_dbg_level {
39 /** @BATADV_DBG_BATMAN: OGM and TQ computations related messages */
40 BATADV_DBG_BATMAN = BIT(0),
41
42 /** @BATADV_DBG_ROUTES: route added / changed / deleted */
43 BATADV_DBG_ROUTES = BIT(1),
44
45 /** @BATADV_DBG_TT: translation table messages */
46 BATADV_DBG_TT = BIT(2),
47
48 /** @BATADV_DBG_BLA: bridge loop avoidance messages */
49 BATADV_DBG_BLA = BIT(3),
50
51 /** @BATADV_DBG_DAT: ARP snooping and DAT related messages */
52 BATADV_DBG_DAT = BIT(4),
53
54 /** @BATADV_DBG_NC: network coding related messages */
55 BATADV_DBG_NC = BIT(5),
56
57 /** @BATADV_DBG_MCAST: multicast related messages */
58 BATADV_DBG_MCAST = BIT(6),
59
60 /** @BATADV_DBG_TP_METER: throughput meter messages */
61 BATADV_DBG_TP_METER = BIT(7),
62
63 /** @BATADV_DBG_ALL: the union of all the above log levels */
64 BATADV_DBG_ALL = 255,
65 };
66
67 #ifdef CONFIG_BATMAN_ADV_DEBUG
68 int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
69 __printf(2, 3);
70
71 /**
72 * _batadv_dbg() - Store debug output with(out) rate limiting
73 * @type: type of debug message
74 * @bat_priv: the bat priv with all the soft interface information
75 * @ratelimited: whether output should be rate limited
76 * @fmt: format string
77 * @arg: variable arguments
78 */
79 #define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...) \
80 do { \
81 struct batadv_priv *__batpriv = (bat_priv); \
82 if (atomic_read(&__batpriv->log_level) & (type) && \
83 (!(ratelimited) || net_ratelimit())) \
84 batadv_debug_log(__batpriv, fmt, ## arg); \
85 } \
86 while (0)
87 #else /* !CONFIG_BATMAN_ADV_DEBUG */
88 __printf(4, 5)
_batadv_dbg(int type __always_unused,struct batadv_priv * bat_priv __always_unused,int ratelimited __always_unused,const char * fmt __always_unused,...)89 static inline void _batadv_dbg(int type __always_unused,
90 struct batadv_priv *bat_priv __always_unused,
91 int ratelimited __always_unused,
92 const char *fmt __always_unused, ...)
93 {
94 }
95 #endif
96
97 /**
98 * batadv_dbg() - Store debug output without rate limiting
99 * @type: type of debug message
100 * @bat_priv: the bat priv with all the soft interface information
101 * @arg: format string and variable arguments
102 */
103 #define batadv_dbg(type, bat_priv, arg...) \
104 _batadv_dbg(type, bat_priv, 0, ## arg)
105
106 /**
107 * batadv_dbg_ratelimited() - Store debug output with rate limiting
108 * @type: type of debug message
109 * @bat_priv: the bat priv with all the soft interface information
110 * @arg: format string and variable arguments
111 */
112 #define batadv_dbg_ratelimited(type, bat_priv, arg...) \
113 _batadv_dbg(type, bat_priv, 1, ## arg)
114
115 /**
116 * batadv_info() - Store message in debug buffer and print it to kmsg buffer
117 * @net_dev: the soft interface net device
118 * @fmt: format string
119 * @arg: variable arguments
120 */
121 #define batadv_info(net_dev, fmt, arg...) \
122 do { \
123 struct net_device *_netdev = (net_dev); \
124 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
125 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
126 pr_info("%s: " fmt, _netdev->name, ## arg); \
127 } while (0)
128
129 /**
130 * batadv_err() - Store error in debug buffer and print it to kmsg buffer
131 * @net_dev: the soft interface net device
132 * @fmt: format string
133 * @arg: variable arguments
134 */
135 #define batadv_err(net_dev, fmt, arg...) \
136 do { \
137 struct net_device *_netdev = (net_dev); \
138 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
139 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
140 pr_err("%s: " fmt, _netdev->name, ## arg); \
141 } while (0)
142
143 #endif /* _NET_BATMAN_ADV_LOG_H_ */
144