netdev - Re: [PATCH net-next v1 0/7] net: extend ethtool link mode bitmaps to 48 bits

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Date:	Mon, 5 Jan 2015 01:34:26 +0100
From:	Maciej Żenczykowski <zenczykowski@...il.com>
To:	Ben Hutchings <ben@...adent.org.uk>
Cc:	David Decotigny <ddecotig@...il.com>,
	Amir Vadai <amirv@...lanox.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Linux NetDev <netdev@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-api@...r.kernel.org, David Decotigny <decot@...glers.com>,
	"David S. Miller" <davem@...emloft.net>,
	Jason Wang <jasowang@...hat.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Al Viro <viro@...iv.linux.org.uk>,
	Masatake YAMATO <yamato@...hat.com>, Xi Wang <xii@...gle.com>,
	Neil Horman <nhorman@...driver.com>,
	WANG Cong <xiyou.wangcong@...il.com>,
	Flavio Leitner <fbl@...hat.com>, Tom Gundersen <teg@...m.no>,
	Jiri Pirko <jiri@...nulli.us>,
	Vlad Yasevich <vyasevic@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Saeed Mahameed <saeedm@...lanox.com>,
	Venkata Duvvuru <VenkatKumar.Duvvuru@...lex.com>,
	Govindarajulu Varadarajan <_govind@....com>
Subject: Re: [PATCH net-next v1 0/7] net: extend ethtool link mode bitmaps to
 48 bits

>> I can send updates to other drivers, even though it's rather pointless
>> to update 1G drivers at this point for example. Please let me know,
>> but I'd prefer to do this in follow-up patches outside this first
>> patch series.
> [...]
>
> They should be changed to ensure they reject setting any of the high
> advertising flags, but it's not urgent.

if old drivers advertised a get/set_bits function while new drivers
advertised a get/set_new_bits function,
you could not updated any old drivers, and simply take care of
rejecting invalid bits in core, by calling set_new_bits if provided,
if not, rejecting bad bits and calling set_bits if no bad bits were
set.
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