linux-stable/include/linux/of_net.h
Florian Fainelli aa836df958 net: core: add of_find_net_device_by_node()
Add a helper function which allows getting the struct net_device pointer
associated with a given struct device_node pointer. This is useful for
instance for DSA Ethernet devices not backed by a platform_device, but a PCI
device.

Since we need to access net_class which is not accessible outside of
net/core/net-sysfs.c, this helper function is also added here and gated
with CONFIG_OF_NET.

Network devices initialized with SET_NETDEV_DEV() are also taken into
account by checking for dev->parent first and then falling back to
checking the device pointer within struct net_device.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-09 23:50:20 -04:00

34 lines
708 B
C

/*
* OF helpers for network devices.
*
* This file is released under the GPLv2
*/
#ifndef __LINUX_OF_NET_H
#define __LINUX_OF_NET_H
#ifdef CONFIG_OF_NET
#include <linux/of.h>
struct net_device;
extern int of_get_phy_mode(struct device_node *np);
extern const void *of_get_mac_address(struct device_node *np);
extern struct net_device *of_find_net_device_by_node(struct device_node *np);
#else
static inline int of_get_phy_mode(struct device_node *np)
{
return -ENODEV;
}
static inline const void *of_get_mac_address(struct device_node *np)
{
return NULL;
}
static inline struct net_device *of_find_net_device_by_node(struct device_node *np)
{
return NULL;
}
#endif
#endif /* __LINUX_OF_NET_H */