netdev - Re: [patch net-next 1/7] skbuff: Add the offload_mr_fwd

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Date:   Thu, 28 Sep 2017 19:49:03 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Jiri Pirko <jiri@...nulli.us>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, yotamg@...lanox.com,
        idosch@...lanox.com, mlxsw@...lanox.com,
        nikolay@...ulusnetworks.com, dsa@...ulusnetworks.com,
        edumazet@...gle.com, willemb@...gle.com, johannes.berg@...el.com,
        dcaratti@...hat.com, pabeni@...hat.com, daniel@...earbox.net,
        f.fainelli@...il.com, fw@...len.de, gfree.wind@....163.com
Subject: Re: [patch net-next 1/7] skbuff: Add the offload_mr_fwd_mark field

On Thu, Sep 28, 2017 at 07:34:09PM +0200, Jiri Pirko wrote:
> From: Yotam Gigi <yotamg@...lanox.com>
> 
> Similarly to the offload_fwd_mark field, the offload_mr_fwd_mark field is
> used to allow partial offloading of MFC multicast routes.

> The reason why the already existing "offload_fwd_mark" bit cannot be used
> is that a switchdev driver would want to make the distinction between a
> packet that has already gone through L2 forwarding but did not go through
> multicast forwarding, and a packet that has already gone through both L2
> and multicast forwarding.

Hi Jiri

So we are talking about l2 vs l3. So why not call this
offload_l3_fwd_mark?

Is there anything really specific to multicast here?

   Thanks
      Andrew