netdev - Re: [PATCH net-next 1/2] net: dsa: make "label" property optional for dsa2

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Message-ID: <0d1c2cf0-805f-cb88-c19d-9faadfcab33e@kleine-koenig.org>
Date:   Sat, 7 Jan 2017 21:31:09 +0100
From:   Uwe Kleine-König <uwe@...ine-koenig.org>
To:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH net-next 1/2] net: dsa: make "label" property optional for
 dsa2

Hello,

On 01/06/2017 11:00 PM, Vivien Didelot wrote:
> In the new DTS bindings for DSA (dsa2), the "ethernet" and "link"
> phandles are respectively mandatory and exclusive to CPU port and DSA
> link device tree nodes.
> 
> Simplify dsa2.c a bit by checking the presence of such phandle instead
> of checking the redundant "label" property.
> 
> Then the Linux philosophy for Ethernet switch ports is to expose them to
> userspace as standard NICs by default. Thus use the standard enumerated
> "eth%d" device name if no "label" property is provided for a user port.
> This allows to save DTS files from subjective net device names.
> 
> If one wants to rename an interface, udev rules can be used as usual.
> The sysfs phys_port_id and phys_switch_id also provide physical data.
> 
> Of course the current behavior is unchanged, and the optional "label"
> property for user ports has precedence over the enumerated name.
> 
> Signed-off-by: Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Acked-by: Uwe Kleine-König <uwe@...ine-koenig.org>

Thanks
Uwe



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