netdev - Re: [patch net 1/6] switchdev: Execute bridge ndos only for bridge ports

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Date:   Wed, 19 Oct 2016 11:00:05 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     jiri@...nulli.us
Cc:     netdev@...r.kernel.org, idosch@...lanox.com, eladr@...lanox.com,
        yotamg@...lanox.com, nogahf@...lanox.com, ogerlitz@...lanox.com,
        roopa@...ulusnetworks.com, nikolay@...ulusnetworks.com,
        linville@...driver.com, andy@...yhouse.net, f.fainelli@...il.com,
        dsa@...ulusnetworks.com, jhs@...atatu.com,
        vivien.didelot@...oirfairelinux.com, andrew@...n.ch,
        ivecera@...hat.com
Subject: Re: [patch net 1/6] switchdev: Execute bridge ndos only for bridge
 ports

From: Jiri Pirko <jiri@...nulli.us>
Date: Tue, 18 Oct 2016 18:50:23 +0200

> From: Ido Schimmel <idosch@...lanox.com>
> 
> We recently got the following warning after setting up a vlan device on
> top of an offloaded bridge and executing 'bridge link':
...
> The problem is that the 8021q module propagates the call to
> ndo_bridge_getlink() via switchdev ops, but the switch driver doesn't
> recognize the netdev, as it's not offloaded.
> 
> While we can ignore calls being made to non-bridge ports inside the
> driver, a better fix would be to push this check up to the switchdev
> layer.
> 
> Note that these ndos can be called for non-bridged netdev, but this only
> happens in certain PF drivers which don't call the corresponding
> switchdev functions anyway.
> 
> Fixes: 99f44bb3527b ("mlxsw: spectrum: Enable L3 interfaces on top of bridge devices")
> Signed-off-by: Ido Schimmel <idosch@...lanox.com>
> Reported-by: Tamir Winetroub <tamirw@...lanox.com>
> Tested-by: Tamir Winetroub <tamirw@...lanox.com>
> Signed-off-by: Jiri Pirko <jiri@...lanox.com>

Applied and queued up for -stable, thanks.