net: add include/net/net_debug.h

Remove from include/linux/netdevice.h helpers
that send debug/info/warnings to syslog.

We plan adding more helpers in following patches.

v2: added two includes, and 'struct net_device' forward declaration
    to avoid compile errors (kernel bots)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 51fe143..5363216 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -50,6 +50,7 @@
 #include <linux/hashtable.h>
 #include <linux/rbtree.h>
 #include <net/net_trackers.h>
+#include <net/net_debug.h>
 
 struct netpoll_info;
 struct device;
@@ -5071,81 +5072,9 @@ static inline const char *netdev_reg_state(const struct net_device *dev)
        return " (unknown)";
 }
 
-__printf(3, 4) __cold
-void netdev_printk(const char *level, const struct net_device *dev,
-                  const char *format, ...);
-__printf(2, 3) __cold
-void netdev_emerg(const struct net_device *dev, const char *format, ...);
-__printf(2, 3) __cold
-void netdev_alert(const struct net_device *dev, const char *format, ...);
-__printf(2, 3) __cold
-void netdev_crit(const struct net_device *dev, const char *format, ...);
-__printf(2, 3) __cold
-void netdev_err(const struct net_device *dev, const char *format, ...);
-__printf(2, 3) __cold
-void netdev_warn(const struct net_device *dev, const char *format, ...);
-__printf(2, 3) __cold
-void netdev_notice(const struct net_device *dev, const char *format, ...);
-__printf(2, 3) __cold
-void netdev_info(const struct net_device *dev, const char *format, ...);
-
-#define netdev_level_once(level, dev, fmt, ...)                        \
-do {                                                           \
-       static bool __section(".data.once") __print_once;       \
-                                                               \
-       if (!__print_once) {                                    \
-               __print_once = true;                            \
-               netdev_printk(level, dev, fmt, ##__VA_ARGS__);  \
-       }                                                       \
-} while (0)
-
-#define netdev_emerg_once(dev, fmt, ...) \
-       netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__)
-#define netdev_alert_once(dev, fmt, ...) \
-       netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__)
-#define netdev_crit_once(dev, fmt, ...) \
-       netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__)
-#define netdev_err_once(dev, fmt, ...) \
-       netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__)
-#define netdev_warn_once(dev, fmt, ...) \
-       netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__)
-#define netdev_notice_once(dev, fmt, ...) \
-       netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__)
-#define netdev_info_once(dev, fmt, ...) \
-       netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__)
-
 #define MODULE_ALIAS_NETDEV(device) \
        MODULE_ALIAS("netdev-" device)
 
-#if defined(CONFIG_DYNAMIC_DEBUG) || \
-       (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
-#define netdev_dbg(__dev, format, args...)                     \
-do {                                                           \
-       dynamic_netdev_dbg(__dev, format, ##args);              \
-} while (0)
-#elif defined(DEBUG)
-#define netdev_dbg(__dev, format, args...)                     \
-       netdev_printk(KERN_DEBUG, __dev, format, ##args)
-#else
-#define netdev_dbg(__dev, format, args...)                     \
-({                                                             \
-       if (0)                                                  \
-               netdev_printk(KERN_DEBUG, __dev, format, ##args); \
-})
-#endif
-
-#if defined(VERBOSE_DEBUG)
-#define netdev_vdbg    netdev_dbg
-#else
-
-#define netdev_vdbg(dev, format, args...)                      \
-({                                                             \
-       if (0)                                                  \
-               netdev_printk(KERN_DEBUG, dev, format, ##args); \
-       0;                                                      \
-})
-#endif
-
 /*
  * netdev_WARN() acts like dev_printk(), but with the key difference
  * of using a WARN/WARN_ON to get the message out, including the
@@ -5159,74 +5088,6 @@ do {                                                             \
        WARN_ONCE(1, "netdevice: %s%s: " format, netdev_name(dev),      \
                  netdev_reg_state(dev), ##args)
 
-/* netif printk helpers, similar to netdev_printk */
-
-#define netif_printk(priv, type, level, dev, fmt, args...)     \
-do {                                                           \
-       if (netif_msg_##type(priv))                             \
-               netdev_printk(level, (dev), fmt, ##args);       \
-} while (0)
-
-#define netif_level(level, priv, type, dev, fmt, args...)      \
-do {                                                           \
-       if (netif_msg_##type(priv))                             \
-               netdev_##level(dev, fmt, ##args);               \
-} while (0)
-
-#define netif_emerg(priv, type, dev, fmt, args...)             \
-       netif_level(emerg, priv, type, dev, fmt, ##args)
-#define netif_alert(priv, type, dev, fmt, args...)             \
-       netif_level(alert, priv, type, dev, fmt, ##args)
-#define netif_crit(priv, type, dev, fmt, args...)              \
-       netif_level(crit, priv, type, dev, fmt, ##args)
-#define netif_err(priv, type, dev, fmt, args...)               \
-       netif_level(err, priv, type, dev, fmt, ##args)
-#define netif_warn(priv, type, dev, fmt, args...)              \
-       netif_level(warn, priv, type, dev, fmt, ##args)
-#define netif_notice(priv, type, dev, fmt, args...)            \
-       netif_level(notice, priv, type, dev, fmt, ##args)
-#define netif_info(priv, type, dev, fmt, args...)              \
-       netif_level(info, priv, type, dev, fmt, ##args)
-
-#if defined(CONFIG_DYNAMIC_DEBUG) || \
-       (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
-#define netif_dbg(priv, type, netdev, format, args...)         \
-do {                                                           \
-       if (netif_msg_##type(priv))                             \
-               dynamic_netdev_dbg(netdev, format, ##args);     \
-} while (0)
-#elif defined(DEBUG)
-#define netif_dbg(priv, type, dev, format, args...)            \
-       netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
-#else
-#define netif_dbg(priv, type, dev, format, args...)                    \
-({                                                                     \
-       if (0)                                                          \
-               netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
-       0;                                                              \
-})
-#endif
-
-/* if @cond then downgrade to debug, else print at @level */
-#define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...)     \
-       do {                                                              \
-               if (cond)                                                 \
-                       netif_dbg(priv, type, netdev, fmt, ##args);       \
-               else                                                      \
-                       netif_ ## level(priv, type, netdev, fmt, ##args); \
-       } while (0)
-
-#if defined(VERBOSE_DEBUG)
-#define netif_vdbg     netif_dbg
-#else
-#define netif_vdbg(priv, type, dev, format, args...)           \
-({                                                             \
-       if (0)                                                  \
-               netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
-       0;                                                      \
-})
-#endif
-
 /*
  *     The list of packet types we will receive (as opposed to discard)
  *     and the routines to invoke.

diff --git a/include/net/net_debug.h b/include/net/net_debug.h
new file mode 100644 (file)
index 0000000..19cd270
--- /dev/null
+++ b/include/net/net_debug.h
@@ -0,0 +1,151 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_NET_DEBUG_H
+#define _LINUX_NET_DEBUG_H
+
+#include <linux/bug.h>
+#include <linux/kern_levels.h>
+
+struct net_device;
+
+__printf(3, 4) __cold
+void netdev_printk(const char *level, const struct net_device *dev,
+                  const char *format, ...);
+__printf(2, 3) __cold
+void netdev_emerg(const struct net_device *dev, const char *format, ...);
+__printf(2, 3) __cold
+void netdev_alert(const struct net_device *dev, const char *format, ...);
+__printf(2, 3) __cold
+void netdev_crit(const struct net_device *dev, const char *format, ...);
+__printf(2, 3) __cold
+void netdev_err(const struct net_device *dev, const char *format, ...);
+__printf(2, 3) __cold
+void netdev_warn(const struct net_device *dev, const char *format, ...);
+__printf(2, 3) __cold
+void netdev_notice(const struct net_device *dev, const char *format, ...);
+__printf(2, 3) __cold
+void netdev_info(const struct net_device *dev, const char *format, ...);
+
+#define netdev_level_once(level, dev, fmt, ...)                        \
+do {                                                           \
+       static bool __section(".data.once") __print_once;       \
+                                                               \
+       if (!__print_once) {                                    \
+               __print_once = true;                            \
+               netdev_printk(level, dev, fmt, ##__VA_ARGS__);  \
+       }                                                       \
+} while (0)
+
+#define netdev_emerg_once(dev, fmt, ...) \
+       netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__)
+#define netdev_alert_once(dev, fmt, ...) \
+       netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__)
+#define netdev_crit_once(dev, fmt, ...) \
+       netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__)
+#define netdev_err_once(dev, fmt, ...) \
+       netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__)
+#define netdev_warn_once(dev, fmt, ...) \
+       netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__)
+#define netdev_notice_once(dev, fmt, ...) \
+       netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__)
+#define netdev_info_once(dev, fmt, ...) \
+       netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__)
+
+#if defined(CONFIG_DYNAMIC_DEBUG) || \
+       (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
+#define netdev_dbg(__dev, format, args...)                     \
+do {                                                           \
+       dynamic_netdev_dbg(__dev, format, ##args);              \
+} while (0)
+#elif defined(DEBUG)
+#define netdev_dbg(__dev, format, args...)                     \
+       netdev_printk(KERN_DEBUG, __dev, format, ##args)
+#else
+#define netdev_dbg(__dev, format, args...)                     \
+({                                                             \
+       if (0)                                                  \
+               netdev_printk(KERN_DEBUG, __dev, format, ##args); \
+})
+#endif
+
+#if defined(VERBOSE_DEBUG)
+#define netdev_vdbg    netdev_dbg
+#else
+
+#define netdev_vdbg(dev, format, args...)                      \
+({                                                             \
+       if (0)                                                  \
+               netdev_printk(KERN_DEBUG, dev, format, ##args); \
+       0;                                                      \
+})
+#endif
+
+/* netif printk helpers, similar to netdev_printk */
+
+#define netif_printk(priv, type, level, dev, fmt, args...)     \
+do {                                                           \
+       if (netif_msg_##type(priv))                             \
+               netdev_printk(level, (dev), fmt, ##args);       \
+} while (0)
+
+#define netif_level(level, priv, type, dev, fmt, args...)      \
+do {                                                           \
+       if (netif_msg_##type(priv))                             \
+               netdev_##level(dev, fmt, ##args);               \
+} while (0)
+
+#define netif_emerg(priv, type, dev, fmt, args...)             \
+       netif_level(emerg, priv, type, dev, fmt, ##args)
+#define netif_alert(priv, type, dev, fmt, args...)             \
+       netif_level(alert, priv, type, dev, fmt, ##args)
+#define netif_crit(priv, type, dev, fmt, args...)              \
+       netif_level(crit, priv, type, dev, fmt, ##args)
+#define netif_err(priv, type, dev, fmt, args...)               \
+       netif_level(err, priv, type, dev, fmt, ##args)
+#define netif_warn(priv, type, dev, fmt, args...)              \
+       netif_level(warn, priv, type, dev, fmt, ##args)
+#define netif_notice(priv, type, dev, fmt, args...)            \
+       netif_level(notice, priv, type, dev, fmt, ##args)
+#define netif_info(priv, type, dev, fmt, args...)              \
+       netif_level(info, priv, type, dev, fmt, ##args)
+
+#if defined(CONFIG_DYNAMIC_DEBUG) || \
+       (defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
+#define netif_dbg(priv, type, netdev, format, args...)         \
+do {                                                           \
+       if (netif_msg_##type(priv))                             \
+               dynamic_netdev_dbg(netdev, format, ##args);     \
+} while (0)
+#elif defined(DEBUG)
+#define netif_dbg(priv, type, dev, format, args...)            \
+       netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
+#else
+#define netif_dbg(priv, type, dev, format, args...)                    \
+({                                                                     \
+       if (0)                                                          \
+               netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
+       0;                                                              \
+})
+#endif
+
+/* if @cond then downgrade to debug, else print at @level */
+#define netif_cond_dbg(priv, type, netdev, cond, level, fmt, args...)     \
+       do {                                                              \
+               if (cond)                                                 \
+                       netif_dbg(priv, type, netdev, fmt, ##args);       \
+               else                                                      \
+                       netif_ ## level(priv, type, netdev, fmt, ##args); \
+       } while (0)
+
+#if defined(VERBOSE_DEBUG)
+#define netif_vdbg     netif_dbg
+#else
+#define netif_vdbg(priv, type, dev, format, args...)           \
+({                                                             \
+       if (0)                                                  \
+               netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
+       0;                                                      \
+})
+#endif
+
+
+#endif /* _LINUX_NET_DEBUG_H */