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Commit 4e9cac2b authored by Patrick McHardy's avatar Patrick McHardy Committed by David S. Miller
Browse files

[NET]: Add __dev_getfirstbyhwtype 



Add __dev_getfirstbyhwtype for callers that don't want a reference but
some data from the device and thus need to take the rtnl anyway.

Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5b35fad9

include/linux/netdevice.h

+1 −0
Original line number Diff line number Diff line
@@ -582,6 +582,7 @@ extern int netdev_boot_setup_check(struct net_device *dev); 
extern unsigned long		netdev_boot_base(const char *prefix, int unit);

extern struct net_device    *dev_getbyhwaddr(unsigned short type, char *hwaddr);

extern struct net_device *dev_getfirstbyhwtype(unsigned short type);

extern struct net_device *__dev_getfirstbyhwtype(unsigned short type);

extern void		dev_add_pack(struct packet_type *pt);

extern void		dev_remove_pack(struct packet_type *pt);

extern void		__dev_remove_pack(struct packet_type *pt);

net/core/dev.c

+16 −5
Original line number Diff line number Diff line
@@ -576,17 +576,28 @@ struct net_device *dev_getbyhwaddr(unsigned short type, char *ha) 


EXPORT_SYMBOL(dev_getbyhwaddr);



struct net_device *dev_getfirstbyhwtype(unsigned short type)

struct net_device *__dev_getfirstbyhwtype(unsigned short type)

{

	struct net_device *dev;



	rtnl_lock();

	ASSERT_RTNL();

	for (dev = dev_base; dev; dev = dev->next) {

		if (dev->type == type) {

			dev_hold(dev);

		if (dev->type == type)

			break;

	}

	return dev;

}



EXPORT_SYMBOL(__dev_getfirstbyhwtype);



struct net_device *dev_getfirstbyhwtype(unsigned short type)

{

	struct net_device *dev;



	rtnl_lock();

	dev = __dev_getfirstbyhwtype(type);

	if (dev)

		dev_hold(dev);

	rtnl_unlock();

	return dev;

}