netdev - Re: [PATCH net-next-2.6] etherdevice.h: Add is_unicast_ether

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Date:	Thu, 13 Jan 2011 00:24:41 -0800
From:	Joe Perches <joe@...ches.com>
To:	Tobias Klauser <tklauser@...tanz.ch>
Cc:	David Miller <davem@...emloft.net>, cmetcalf@...era.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next-2.6] etherdevice.h: Add is_unicast_ether_addr
 function

On Thu, 2011-01-13 at 09:14 +0100, Tobias Klauser wrote:
> >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.
>  include/linux/etherdevice.h |   11 +++++++++++
[]
>  /**
> + * 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);
> +}

Can't you simply use is_valid_ether_addr?

I can't think of much reason that a new function for
!multicast without the !is_zero is needed.


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