linux-kernel - Re: [PATCH 00/12] Part 2: check given MAC address, if invalid return -EADDRNOTAVAIL

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Date:	Wed, 29 Feb 2012 08:02:49 +0100
From:	Danny Kukawka <danny.kukawka@...ect.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	Michał Mirosław <mirqus@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Andy Gospodarek <andy@...yhouse.net>,
	"Guo-Fu Tseng" <cooldavid@...ldavid.org>,
	Petko Manolov <petkan@...rs.sourceforge.net>,
	"VMware, Inc." <pv-drivers@...are.com>,
	"John W. Linville" <linville@...driver.com>, linux390@...ibm.com,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	Stephen Hemminger <shemminger@...tta.com>,
	Joe Perches <joe@...ches.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jiri Pirko <jpirko@...hat.com>, netdev@...r.kernel.org,
	linux-usb@...r.kernel.org, linux-wireless@...r.kernel.org,
	libertas-dev@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org, linux-s390@...r.kernel.org,
	linux-hams@...r.kernel.org, linux-mips@...ux-mips.org
Subject: Re: [PATCH 00/12] Part 2: check given MAC address, if invalid return -EADDRNOTAVAIL

On Samstag, 25. Februar 2012, Geert Uytterhoeven wrote:
> 2012/2/24 Michał Mirosław <mirqus@...il.com>:
> > 2012/2/24 Danny Kukawka <danny.kukawka@...ect.de>:
> >> Second Part of series patches to unifiy the return value of
> >> .ndo_set_mac_address if the given address isn't valid.
> >>
> >> These changes check if a given (MAC) address is valid in
> >> .ndo_set_mac_address, if invalid return -EADDRNOTAVAIL
> >> as eth_mac_addr() already does if is_valid_ether_addr() fails.
> >
> > Why not just fix dev_set_mac_address() and make do_setlink() use that?
>
> BTW, it's also called from dev_set_mac_address().
>
> > Checks are specific to address family, not device model I assume.
>
> Indeed, why can't this be done in one single place, instead of sprinkling
> these checks over all drivers, missing all out-of-tree (note: I don't care)
> and all soon-to-be-submitted drivers?

Since the .ndo_set_mac_address functions are used by some drivers internally 
too, you may get some new checks on other places. But I'll take a look at it.

Danny

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