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5b87be9e ED |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_NET_DEBUG_H | |
3 | #define _LINUX_NET_DEBUG_H | |
4 | ||
5 | #include <linux/bug.h> | |
6 | #include <linux/kern_levels.h> | |
7 | ||
8 | struct net_device; | |
9 | ||
10 | __printf(3, 4) __cold | |
11 | void netdev_printk(const char *level, const struct net_device *dev, | |
12 | const char *format, ...); | |
13 | __printf(2, 3) __cold | |
14 | void netdev_emerg(const struct net_device *dev, const char *format, ...); | |
15 | __printf(2, 3) __cold | |
16 | void netdev_alert(const struct net_device *dev, const char *format, ...); | |
17 | __printf(2, 3) __cold | |
18 | void netdev_crit(const struct net_device *dev, const char *format, ...); | |
19 | __printf(2, 3) __cold | |
20 | void netdev_err(const struct net_device *dev, const char *format, ...); | |
21 | __printf(2, 3) __cold | |
22 | void netdev_warn(const struct net_device *dev, const char *format, ...); | |
23 | __printf(2, 3) __cold | |
24 | void netdev_notice(const struct net_device *dev, const char *format, ...); | |
25 | __printf(2, 3) __cold | |
26 | void netdev_info(const struct net_device *dev, const char *format, ...); | |
27 | ||
28 | #define netdev_level_once(level, dev, fmt, ...) \ | |
29 | do { \ | |
30 | static bool __section(".data.once") __print_once; \ | |
31 | \ | |
32 | if (!__print_once) { \ | |
33 | __print_once = true; \ | |
34 | netdev_printk(level, dev, fmt, ##__VA_ARGS__); \ | |
35 | } \ | |
36 | } while (0) | |
37 | ||
38 | #define netdev_emerg_once(dev, fmt, ...) \ | |
39 | netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__) | |
40 | #define netdev_alert_once(dev, fmt, ...) \ | |
41 | netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__) | |
42 | #define netdev_crit_once(dev, fmt, ...) \ | |
43 | netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__) | |
44 | #define netdev_err_once(dev, fmt, ...) \ | |
45 | netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__) | |
46 | #define netdev_warn_once(dev, fmt, ...) \ | |
47 | netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__) | |
48 | #define netdev_notice_once(dev, fmt, ...) \ | |
49 | netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__) | |
50 | #define netdev_info_once(dev, fmt, ...) \ | |
51 | netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__) | |
52 | ||
53 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ | |
54 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
55 | #define netdev_dbg(__dev, format, args...) \ | |
56 | do { \ | |
57 | dynamic_netdev_dbg(__dev, format, ##args); \ | |
58 | } while (0) | |
59 | #elif defined(DEBUG) | |
60 | #define netdev_dbg(__dev, format, args...) \ | |
61 | netdev_printk(KERN_DEBUG, __dev, format, ##args) | |
62 | #else | |
63 | #define netdev_dbg(__dev, format, args...) \ | |
64 | ({ \ | |
65 | if (0) \ | |
66 | netdev_printk(KERN_DEBUG, __dev, format, ##args); \ | |
67 | }) | |
68 | #endif | |
69 | ||
70 | #if defined(VERBOSE_DEBUG) | |
71 | #define netdev_vdbg netdev_dbg | |
72 | #else | |
73 | ||
74 | #define netdev_vdbg(dev, format, args...) \ | |
75 | ({ \ | |
76 | if (0) \ | |
77 | netdev_printk(KERN_DEBUG, dev, format, ##args); \ | |
78 | 0; \ | |
79 | }) | |
80 | #endif | |
81 | ||
82 | /* netif printk helpers, similar to netdev_printk */ | |
83 | ||
84 | #define netif_printk(priv, type, level, dev, fmt, args...) \ | |
85 | do { \ | |
86 | if (netif_msg_##type(priv)) \ | |
87 | netdev_printk(level, (dev), fmt, ##args); \ | |
88 | } while (0) | |
89 | ||
90 | #define netif_level(level, priv, type, dev, fmt, args...) \ | |
91 | do { \ | |
92 | if (netif_msg_##type(priv)) \ | |
93 | netdev_##level(dev, fmt, ##args); \ | |
94 | } while (0) | |
95 | ||
96 | #define netif_emerg(priv, type, dev, fmt, args...) \ | |
97 | netif_level(emerg, priv, type, dev, fmt, ##args) | |
98 | #define netif_alert(priv, type, dev, fmt, args...) \ | |
99 | netif_level(alert, priv, type, dev, fmt, ##args) | |
100 | #define netif_crit(priv, type, dev, fmt, args...) \ | |
101 | netif_level(crit, priv, type, dev, fmt, ##args) | |
102 | #define netif_err(priv, type, dev, fmt, args...) \ | |
103 | netif_level(err, priv, type, dev, fmt, ##args) | |
104 | #define netif_warn(priv, type, dev, fmt, args...) \ | |
105 | netif_level(warn, priv, type, dev, fmt, ##args) | |
106 | #define netif_notice(priv, type, dev, fmt, args...) \ | |
107 | netif_level(notice, priv, type, dev, fmt, ##args) | |
108 | #define netif_info(priv, type, dev, fmt, args...) \ | |
109 | netif_level(info, priv, type, dev, fmt, ##args) | |
110 | ||
111 | #if defined(CONFIG_DYNAMIC_DEBUG) || \ | |
112 | (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE)) | |
113 | #define netif_dbg(priv, type, netdev, format, args...) \ | |
114 | do { \ | |
115 | if (netif_msg_##type(priv)) \ | |
116 | dynamic_netdev_dbg(netdev, format, ##args); \ | |
117 | } while (0) | |
118 | #elif defined(DEBUG) | |
119 | #define netif_dbg(priv, type, dev, format, args...) \ | |
120 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args) | |
121 | #else | |
122 | #define netif_dbg(priv, type, dev, format, args...) \ | |
123 | ({ \ | |
124 | if (0) \ | |
125 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
126 | 0; \ | |
127 | }) | |
128 | #endif | |
129 | ||
130 | /* if @cond then downgrade to debug, else print at @level */ | |
131 | #define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...) \ | |
132 | do { \ | |
133 | if (cond) \ | |
134 | netif_dbg(priv, type, netdev, fmt, ##args); \ | |
135 | else \ | |
136 | netif_ ## level(priv, type, netdev, fmt, ##args); \ | |
137 | } while (0) | |
138 | ||
139 | #if defined(VERBOSE_DEBUG) | |
140 | #define netif_vdbg netif_dbg | |
141 | #else | |
142 | #define netif_vdbg(priv, type, dev, format, args...) \ | |
143 | ({ \ | |
144 | if (0) \ | |
145 | netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \ | |
146 | 0; \ | |
147 | }) | |
148 | #endif | |
149 | ||
150 | ||
d268c1f5 ED |
151 | #if defined(CONFIG_DEBUG_NET) |
152 | #define DEBUG_NET_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond) | |
153 | #else | |
154 | #define DEBUG_NET_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond) | |
155 | #endif | |
156 | ||
5b87be9e | 157 | #endif /* _LINUX_NET_DEBUG_H */ |