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Commit 73eaef87 authored by Joe Perches's avatar Joe Perches Committed by David S. Miller
Browse files

etherdevice: Add ether_addr_equal_unaligned 



Add a generic routine to test if possibly unaligned
to u16 Ethernet addresses are equal.

If CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is set,
this uses the slightly faster generic routine
ether_addr_equal, otherwise this uses memcmp.

Signed-off-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4e588793

include/linux/etherdevice.h

+18 −0
Original line number Original line Diff line number Diff line
@@ -265,6 +265,24 @@ static inline bool ether_addr_equal_64bits(const u8 addr1[6+2], 
#endif

#endif

}

}





/**

 * ether_addr_equal_unaligned - Compare two not u16 aligned Ethernet addresses

 * @addr1: Pointer to a six-byte array containing the Ethernet address

 * @addr2: Pointer other six-byte array containing the Ethernet address

 *

 * Compare two Ethernet addresses, returns true if equal

 *

 * Please note: Use only when any Ethernet address may not be u16 aligned.

 */

static inline bool ether_addr_equal_unaligned(const u8 *addr1, const u8 *addr2)

{

#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS)

	return ether_addr_equal(addr1, addr2);

#else

	return memcmp(addr1, addr2, ETH_ALEN) == 0;

#endif

}



/**

/**

 * is_etherdev_addr - Tell if given Ethernet address belongs to the device.

 * is_etherdev_addr - Tell if given Ethernet address belongs to the device.

 * @dev: Pointer to a device structure

 * @dev: Pointer to a device structure