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Commit 51e7eed7 authored by Tobias Klauser's avatar Tobias Klauser Committed by David S. Miller
Browse files

etherdevice.h: Add is_unicast_ether_addr function 



From a check for !is_multicast_ether_addr it is not always obvious that
we're checking for a unicast address. So add this helper function to
make those code paths easier to read.

Signed-off-by: default avatarTobias Klauser <tklauser@distanz.ch>
Acked-by: default avatarChris Metcalf <cmetcalf@tilera.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5cd8a77d

include/linux/etherdevice.h

+11 −0
Original line number Diff line number Diff line
@@ -98,6 +98,17 @@ static inline int is_broadcast_ether_addr(const u8 *addr) 
	return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff;

}



/**

 * is_unicast_ether_addr - Determine if the Ethernet address is unicast

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

 *

 * Return true if the address is a unicast address.

 */

static inline int is_unicast_ether_addr(const u8 *addr)

{

	return !is_multicast_ether_addr(addr);

}



/**

 * is_valid_ether_addr - Determine if the given Ethernet address is valid

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