include/linux/netdevice.h: Add netif_printk helpers

Add macros to test a private structure for msg_enable bits
and the netif_msg_##bit to test and call netdev_printk if set

Simplifies logic in callers and adds message logging consistency
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netdevice.h

@@ -2165,6 +2165,59 @@ do {								\
 #define netdev_WARN(dev, format, args...)			\
 	WARN(1, "netdevice: %s\n" format, netdev_name(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_emerg(priv, type, dev, fmt, args...)		\
+	netif_printk(priv, type, KERN_EMERG, dev, fmt, ##args)
+#define netif_alert(priv, type, dev, fmt, args...)		\
+	netif_printk(priv, type, KERN_ALERT, dev, fmt, ##args)
+#define netif_crit(priv, type, dev, fmt, args...)		\
+	netif_printk(priv, type, KERN_CRIT, dev, fmt, ##args)
+#define netif_err(priv, type, dev, fmt, args...)		\
+	netif_printk(priv, type, KERN_ERR, dev, fmt, ##args)
+#define netif_warn(priv, type, dev, fmt, args...)		\
+	netif_printk(priv, type, KERN_WARNING, dev, fmt, ##args)
+#define netif_notice(priv, type, dev, fmt, args...)		\
+	netif_printk(priv, type, KERN_NOTICE, dev, fmt, ##args)
+#define netif_info(priv, type, dev, fmt, args...)		\
+	netif_printk(priv, type, KERN_INFO, (dev), fmt, ##args)
+
+#if defined(DEBUG)
+#define netif_dbg(priv, type, dev, format, args...)		\
+	netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
+#elif defined(CONFIG_DYNAMIC_DEBUG)
+#define netif_dbg(priv, type, netdev, format, args...)		\
+do {								\
+	if (netif_msg_##type(priv))				\
+		dynamic_dev_dbg((netdev)->dev.parent,		\
+				"%s: " format,			\
+				netdev_name(netdev), ##args);	\
+} while (0)
+#else
+#define netif_dbg(priv, type, dev, format, args...)			\
+({									\
+	if (0)								\
+		netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
+	0;								\
+})
+#endif
+
+#if defined(VERBOSE_DEBUG)
+#define netif_vdbg	netdev_dbg
+#else
+#define netif_vdbg(priv, type, dev, format, args...)		\
+({								\
+	if (0)							\
+		netif_printk(KERN_DEBUG, dev, format, ##args);	\
+	0;							\
+})
+#endif
 
 #endif /* __KERNEL__ */