[PATCH V2 3/3] ethernet: Convert mac address uses of 6 to ETH_ALEN

David Miller davem at davemloft.net
Thu Aug 1 17:10:16 EDT 2013

From: Russell King - ARM Linux <linux at arm.linux.org.uk>
Date: Thu, 1 Aug 2013 22:06:18 +0100

> On Thu, Aug 01, 2013 at 02:04:47PM -0700, Joe Perches wrote:
>> On Thu, 2013-08-01 at 21:58 +0100, Russell King - ARM Linux wrote:
>> > This seems rather obscure - I mean, it's not obvious to driver authors
>> > that should be the case.  Would it not be better to make this a little
>> > more obvious somehow?  Maybe __aligned(2) against mac_addr?  Or
>> > maybe have a debugging check for it?
>> That'd be for David Miller (cc'd).
>> I believe he's argued in the past that any alignment check
>> for mac addresses was unnecessary.
>> For all I know it really might not matter because pasemi
>> can successfully dereference a ushort against an odd char
>> pointer.
>> I just noticed it and thought it'd be better moved.
> As can ARM too for years now - either in hardware or via fixup for
> kernel code.

But probably not a good idea if it's done in a fast path.

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