netdev - Re: [PATCH 1/4 net-next] net: phy: add Generic Netlink Ethernet switch configuration API

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Date:	Wed, 30 Oct 2013 00:12:45 +0100
From:	Maxime Bizon <mbizon@...ebox.fr>
To:	Jamal Hadi Salim <jhs@...atatu.com>
Cc:	Felix Fietkau <nbd@...nwrt.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	Neil Horman <nhorman@...driver.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	John Crispin <blogic@...nwrt.org>,
	Jonas Gorski <jogo@...nwrt.org>,
	Gary Thomas <gary@...assoc.com>,
	Vlad Yasevich <vyasevic@...hat.com>,
	Stephen Hemminger <stephen@...workplumber.org>
Subject: Re: [PATCH 1/4 net-next] net: phy: add Generic Netlink Ethernet
 switch configuration API


On Wed, 2013-10-23 at 08:53 -0400, Jamal Hadi Salim wrote:

> So exposing the 5-8 ports as netdevs would be useful. Giving access to
> their stats through per-port netdevs etc. i.e a switch/bridge will 

While the intent is to make it look familiar to users, IMO this breaks
the rule of the least surprise.

>From a user POV, when you see a netdevice, you expect to be able to
receive or send packets from/to it. The ability to read stats/link is
only a secondary feature.

Wireless subsystem moved away from using dummy/additional netdevices
because it caused confusion.

multiqueue devices forced us to separate struct netdevice and struct
netdev_queue, maybe it's time for more surgery :)

-- 
Maxime


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