net_debug.h 5.1 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157
  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef _LINUX_NET_DEBUG_H
  3. #define _LINUX_NET_DEBUG_H
  4. #include <linux/bug.h>
  5. #include <linux/kern_levels.h>
  6. struct net_device;
  7. __printf(3, 4) __cold
  8. void netdev_printk(const char *level, const struct net_device *dev,
  9. const char *format, ...);
  10. __printf(2, 3) __cold
  11. void netdev_emerg(const struct net_device *dev, const char *format, ...);
  12. __printf(2, 3) __cold
  13. void netdev_alert(const struct net_device *dev, const char *format, ...);
  14. __printf(2, 3) __cold
  15. void netdev_crit(const struct net_device *dev, const char *format, ...);
  16. __printf(2, 3) __cold
  17. void netdev_err(const struct net_device *dev, const char *format, ...);
  18. __printf(2, 3) __cold
  19. void netdev_warn(const struct net_device *dev, const char *format, ...);
  20. __printf(2, 3) __cold
  21. void netdev_notice(const struct net_device *dev, const char *format, ...);
  22. __printf(2, 3) __cold
  23. void netdev_info(const struct net_device *dev, const char *format, ...);
  24. #define netdev_level_once(level, dev, fmt, ...) \
  25. do { \
  26. static bool __section(".data.once") __print_once; \
  27. \
  28. if (!__print_once) { \
  29. __print_once = true; \
  30. netdev_printk(level, dev, fmt, ##__VA_ARGS__); \
  31. } \
  32. } while (0)
  33. #define netdev_emerg_once(dev, fmt, ...) \
  34. netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__)
  35. #define netdev_alert_once(dev, fmt, ...) \
  36. netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__)
  37. #define netdev_crit_once(dev, fmt, ...) \
  38. netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__)
  39. #define netdev_err_once(dev, fmt, ...) \
  40. netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__)
  41. #define netdev_warn_once(dev, fmt, ...) \
  42. netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__)
  43. #define netdev_notice_once(dev, fmt, ...) \
  44. netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__)
  45. #define netdev_info_once(dev, fmt, ...) \
  46. netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__)
  47. #if defined(CONFIG_DYNAMIC_DEBUG) || \
  48. (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
  49. #define netdev_dbg(__dev, format, args...) \
  50. do { \
  51. dynamic_netdev_dbg(__dev, format, ##args); \
  52. } while (0)
  53. #elif defined(DEBUG)
  54. #define netdev_dbg(__dev, format, args...) \
  55. netdev_printk(KERN_DEBUG, __dev, format, ##args)
  56. #else
  57. #define netdev_dbg(__dev, format, args...) \
  58. ({ \
  59. if (0) \
  60. netdev_printk(KERN_DEBUG, __dev, format, ##args); \
  61. })
  62. #endif
  63. #if defined(VERBOSE_DEBUG)
  64. #define netdev_vdbg netdev_dbg
  65. #else
  66. #define netdev_vdbg(dev, format, args...) \
  67. ({ \
  68. if (0) \
  69. netdev_printk(KERN_DEBUG, dev, format, ##args); \
  70. 0; \
  71. })
  72. #endif
  73. /* netif printk helpers, similar to netdev_printk */
  74. #define netif_printk(priv, type, level, dev, fmt, args...) \
  75. do { \
  76. if (netif_msg_##type(priv)) \
  77. netdev_printk(level, (dev), fmt, ##args); \
  78. } while (0)
  79. #define netif_level(level, priv, type, dev, fmt, args...) \
  80. do { \
  81. if (netif_msg_##type(priv)) \
  82. netdev_##level(dev, fmt, ##args); \
  83. } while (0)
  84. #define netif_emerg(priv, type, dev, fmt, args...) \
  85. netif_level(emerg, priv, type, dev, fmt, ##args)
  86. #define netif_alert(priv, type, dev, fmt, args...) \
  87. netif_level(alert, priv, type, dev, fmt, ##args)
  88. #define netif_crit(priv, type, dev, fmt, args...) \
  89. netif_level(crit, priv, type, dev, fmt, ##args)
  90. #define netif_err(priv, type, dev, fmt, args...) \
  91. netif_level(err, priv, type, dev, fmt, ##args)
  92. #define netif_warn(priv, type, dev, fmt, args...) \
  93. netif_level(warn, priv, type, dev, fmt, ##args)
  94. #define netif_notice(priv, type, dev, fmt, args...) \
  95. netif_level(notice, priv, type, dev, fmt, ##args)
  96. #define netif_info(priv, type, dev, fmt, args...) \
  97. netif_level(info, priv, type, dev, fmt, ##args)
  98. #if defined(CONFIG_DYNAMIC_DEBUG) || \
  99. (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
  100. #define netif_dbg(priv, type, netdev, format, args...) \
  101. do { \
  102. if (netif_msg_##type(priv)) \
  103. dynamic_netdev_dbg(netdev, format, ##args); \
  104. } while (0)
  105. #elif defined(DEBUG)
  106. #define netif_dbg(priv, type, dev, format, args...) \
  107. netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
  108. #else
  109. #define netif_dbg(priv, type, dev, format, args...) \
  110. ({ \
  111. if (0) \
  112. netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
  113. 0; \
  114. })
  115. #endif
  116. /* if @cond then downgrade to debug, else print at @level */
  117. #define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...) \
  118. do { \
  119. if (cond) \
  120. netif_dbg(priv, type, netdev, fmt, ##args); \
  121. else \
  122. netif_ ## level(priv, type, netdev, fmt, ##args); \
  123. } while (0)
  124. #if defined(VERBOSE_DEBUG)
  125. #define netif_vdbg netif_dbg
  126. #else
  127. #define netif_vdbg(priv, type, dev, format, args...) \
  128. ({ \
  129. if (0) \
  130. netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
  131. 0; \
  132. })
  133. #endif
  134. #if defined(CONFIG_DEBUG_NET)
  135. #define DEBUG_NET_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)
  136. #else
  137. #define DEBUG_NET_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
  138. #endif
  139. #endif /* _LINUX_NET_DEBUG_H */