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net: Add eth_platform_get_mac_address() helper.

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A repeating pattern in drivers has become to use OF node information
and, if not found, platform specific host information to extract the
ethernet address for a given device.

Currently this is done with a call to of_get_mac_address() and then
some ifdef'd stuff for SPARC.

Consolidate this into a portable routine, and provide the
arch_get_platform_mac_address() weak function hook for all
architectures to implement if they want.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2015-11-05 11:34:57 -05:00
parent cdba756f58
commit c7f5d10549
3 changed files with 41 additions and 0 deletions
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3
include/linux/etherdevice.h
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@ -29,6 +29,9 @@
#include <asm/bitsperlong.h>
#ifdef __KERNEL__
struct device;
int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr);
unsigned char *arch_get_platform_get_mac_address(void);
u32 eth_get_headlen(void *data, unsigned int max_len);
__be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev);
extern const struct header_ops eth_header_ops;