Re: [PATCH] Documentation: clarify phys_port_id

[Florian Fainelli <f.fainelli@gmail.com>]

On 17/12/14 08:59, Dan Williams wrote:
> Signed-off-by: Dan Williams <dcbw@redhat.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>

> ---
>  Documentation/ABI/testing/sysfs-class-net | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/ABI/testing/sysfs-class-net b/Documentation/ABI/testing/sysfs-class-net
> index e1b2e78..7fe823a 100644
> --- a/Documentation/ABI/testing/sysfs-class-net
> +++ b/Documentation/ABI/testing/sysfs-class-net
> @@ -186,7 +186,12 @@ KernelVersion:	3.12
>  Contact:	netdev@vger.kernel.org
>  Description:
>  		Indicates the interface unique physical port identifier within
> -		the NIC, as a string.
> +		the NIC, as a string.  If two net_device objects share physical
> +		hardware or other resources, and/or do not operate independently
> +		both net_device objects should be assigned the
> +		same phys_port_id.  phys_port_id should be as globally unique
> +		as possible to prevent conflicts between different drivers and
> +		vendors, eg with MAC addresses or hardware GUIDs.
>  
>  What:		/sys/class/net/<iface>/speed
>  Date:		October 2009
>