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Move is_valid_ether_addr() to include/net.h

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Import the is_valid_ether_addr() function from the Linux kernel.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Mike Frysinger
2009-01-27 16:53:39 -05:00
committed by Ben Warren
parent 268859338c
commit 75edebe301
2 changed files with 16 additions and 16 deletions
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16
include/net.h
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@@ -474,6 +474,22 @@ static inline int is_multicast_ether_addr(const u8 *addr)
return (0x01 & addr[0]);
}
/**
* is_valid_ether_addr - Determine if the given Ethernet address is valid
* @addr: Pointer to a six-byte array containing the Ethernet address
*
* Check that the Ethernet address (MAC) is not 00:00:00:00:00:00, is not
* a multicast address, and is not FF:FF:FF:FF:FF:FF.
*
* Return true if the address is valid.
*/
static inline int is_valid_ether_addr(const u8 * addr)
{
/* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to
* explicitly check for it here. */
return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr);
}
/* Convert an IP address to a string */
extern void ip_to_string (IPaddr_t x, char *s);