netdev - Re: [PATCH] net: dsa: rtl8366: Check VLAN ID and not ports

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Message-ID: <CACRpkdaCV3c5mHDSO6Lw7rrEZVY2cw+4=nox3xgtkfJsVFM=Hg@mail.gmail.com>
Date:   Sat, 28 Sep 2019 22:43:21 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: dsa: rtl8366: Check VLAN ID and not ports

On Sat, Sep 28, 2019 at 10:36 PM Florian Fainelli <f.fainelli@...il.com> wrote:

> Do we need to duplicate the same is_vlan_valid() check in both the
> vlan_prepare and vlan_add callbacks?

I'm unsure of the semantics of these calls, the check was in the
OpenWrt driver that I started from.

Is it guaranteed that .vlan_prepare() and .vlan_add() are
always called in succession? Then .vlan_prepare() should
be enough.

Yours,
Linus Walleij