netdev - Re: [patch net-next v2 07/10] bridge: call netdev_sw_port_stp_update when bridge port STP status changes

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Date:	Mon, 10 Nov 2014 14:04:52 +0000
From:	Thomas Graf <tgraf@...g.ch>
To:	Jamal Hadi Salim <jhs@...atatu.com>
Cc:	Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org,
	davem@...emloft.net, nhorman@...driver.com, andy@...yhouse.net,
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	f.fainelli@...il.com, roopa@...ulusnetworks.com,
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	mleitner@...hat.com, shrijeet@...il.com, gospo@...ulusnetworks.com,
	bcrl@...ck.org
Subject: Re: [patch net-next v2 07/10] bridge: call netdev_sw_port_stp_update
 when bridge port STP status changes

On 11/10/14 at 08:11am, Jamal Hadi Salim wrote:
> You are unconditionally calling
> netdev_sw_port_stp_update(p->dev, p->state);
> Again issue is policy. Could you make this work the same
> way the fdb_add e.g user intent of whether i want to turn
> a port in hardware and/or software to disabled/learning/etc
> is reflected?

Agreed. Can be added in a next series perhaps?

> btw: does _sw_ stand for switch? why not _hw_ ?
> Could we have one ndo for all flags instead of individual ones.
> 
> I know the current user space code uses u8 as a bitflag; but
> maybe we can introduce a new u32 flag bitmask that has all the
> flags set for backward compat? I can count about a total of 10.

I think we can just extend the size of IFLA_BRPORT_STATE, accept
both a u8 and u32, and return a u32 that that is compatible to
existing u8 readers.
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