netdev - Re: [PATCH/RFC net-next] rocker: forward packets to CPU when a port in promiscuous mode

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Message-ID: <CAE4R7bBmxq6pqBsW1tS6w4YRZE2mCfuyd+VBa4-2Lx4fASKH3w@mail.gmail.com>
Date:	Wed, 15 Jul 2015 07:50:32 -0700
From:	Scott Feldman <sfeldma@...il.com>
To:	Simon Horman <simon.horman@...ronome.com>
Cc:	Jiri Pirko <jiri@...nulli.us>, Netdev <netdev@...r.kernel.org>,
	john fastabend <john.fastabend@...il.com>
Subject: Re: [PATCH/RFC net-next] rocker: forward packets to CPU when a port
 in promiscuous mode

On Wed, Jul 15, 2015 at 12:54 AM, Simon Horman
<simon.horman@...ronome.com> wrote:
> On Wed, Jul 15, 2015 at 12:18:20AM -0700, Scott Feldman wrote:
>> On Tue, Jul 14, 2015 at 11:34 PM, Simon Horman
>> <simon.horman@...ronome.com> wrote:
>> > On Tue, Jul 14, 2015 at 10:32:54PM -0700, Scott Feldman wrote:
>>
>> >> > @@ -5263,11 +5301,16 @@ static int rocker_port_master_changed(struct net_device *dev)
>> >> >          * 3. Other, e.g. being added to or removed from a bond or openvswitch,
>> >> >          *    in which case nothing is done
>> >> >          */
>> >>
>> >> Maybe comment above needs adjusting?
>> >
>> > Indeed, sorry for missing that.
>> > How about this?
>> >
>> >
>> >         /* There are currently five cases handled here:
>> >          * 1. Joining a bridge
>> >          * 2. Joining a Open vSwitch datapath
>> >          * 3. Leaving a previously joined bridge
>> >          * 4. Leaving a previously joined Open vSwitch datapath
>> >          * 5. Other, e.g. being added to or removed from a bond,
>> >          *    in which case nothing is done
>> >          */
>>
>> Seems like one of those comments that needs adjusting each time the
>> code changes, which isn't good.  Maybe just kill the comment or write
>> in a generic way saying what code is doing.  Code seems obvious enough
>> to me to not require a comment.
>
> My purpose in adding the comment in the first place was
> to document the "other" case, as it wasn't handled and thus
> didn't seem obvious.
>
> Perhaps something like this would work.
>
>         /* N.B: Do nothing if the type of master is not supported */

Ack
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