Commit 571ba423 authored by Joe Perches's avatar Joe Perches Committed by David S. Miller
Browse files

netdevice.h: Add netdev_printk helpers like dev_printk 



These netdev_printk routines take a struct net_device * and emit
dev_printk logging messages adding "%s: " ... netdev->dev.parent
to the dev_printk format and arguments.

This can create some uniformity in the output message log.

These helpers should not be used until a successful alloc_netdev.

Signed-off-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 21809faf

include/linux/netdevice.h

+71 −0
Original line number Diff line number Diff line
@@ -2095,6 +2095,77 @@ static inline u32 dev_ethtool_get_flags(struct net_device *dev) 
		return 0;

	return dev->ethtool_ops->get_flags(dev);

}



/* Logging, debugging and troubleshooting/diagnostic helpers. */



/* netdev_printk helpers, similar to dev_printk */



static inline const char *netdev_name(const struct net_device *dev)

{

	if (dev->reg_state != NETREG_REGISTERED)

		return "(unregistered net_device)";

	return dev->name;

}



#define netdev_printk(level, netdev, format, args...)		\

	dev_printk(level, (netdev)->dev.parent,			\

		   "%s: " format,				\

		   netdev_name(netdev), ##args)



#define netdev_emerg(dev, format, args...)			\

	netdev_printk(KERN_EMERG, dev, format, ##args)

#define netdev_alert(dev, format, args...)			\

	netdev_printk(KERN_ALERT, dev, format, ##args)

#define netdev_crit(dev, format, args...)			\

	netdev_printk(KERN_CRIT, dev, format, ##args)

#define netdev_err(dev, format, args...)			\

	netdev_printk(KERN_ERR, dev, format, ##args)

#define netdev_warn(dev, format, args...)			\

	netdev_printk(KERN_WARNING, dev, format, ##args)

#define netdev_notice(dev, format, args...)			\

	netdev_printk(KERN_NOTICE, dev, format, ##args)

#define netdev_info(dev, format, args...)			\

	netdev_printk(KERN_INFO, dev, format, ##args)



#if defined(DEBUG)

#define netdev_dbg(__dev, format, args...)			\

	netdev_printk(KERN_DEBUG, __dev, format, ##args)

#elif defined(CONFIG_DYNAMIC_DEBUG)

#define netdev_dbg(__dev, format, args...)			\

do {								\

	dynamic_dev_dbg((__dev)->dev.parent, "%s: " format,	\

			netdev_name(__dev), ##args);		\

} while (0)

#else

#define netdev_dbg(__dev, format, args...)			\

({								\

	if (0)							\

		netdev_printk(KERN_DEBUG, __dev, format, ##args); \

	0;							\

})

#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

 * file/line information and a backtrace.

 */

#define netdev_WARN(dev, format, args...)			\

	WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);





#endif /* __KERNEL__ */



#endif	/* _LINUX_NETDEVICE_H */

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