netdev - Re: [PATCH iproute2] iproute2: unify naming for entries offloaded to hardware

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Date:	Tue, 24 Mar 2015 18:48:04 -0700
From:	Scott Feldman <sfeldma@...il.com>
To:	Andy Gospodarek <gospo@...ulusnetworks.com>
Cc:	Netdev <netdev@...r.kernel.org>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jiri Pirko <jiri@...nulli.us>,
	"John W. Linville" <linville@...driver.com>,
	Roopa Prabhu <roopa@...ulusnetworks.com>,
	Stephen Hemminger <stephen@...workplumber.org>
Subject: Re: [PATCH iproute2] iproute2: unify naming for entries offloaded to hardware

On Tue, Mar 24, 2015 at 5:33 PM, Andy Gospodarek
<gospo@...ulusnetworks.com> wrote:
> The kernel now has the capability to offload FDB and FIB entries to hardware.
> It is important to let users know if table entries are also offloaded to
> hardware.  Currently offloaded FDB entries are indicated by the existence of
> the flag 'external' on the entry as of the following commit:
>
> commit 28467b7f3facd6114b2fbe0c9fecf57adbd52e12
> Author: Scott Feldman <sfeldma@...il.com>
> Date:   Thu Dec 4 09:57:15 2014 +0100
>
>     bridge/fdb: add flag/indication for FDB entry synced from offload device
>
> When the patch to add support for indicating that FIB entries were also
> offloaded as posted to netdev by Scott Feldman it became clear that 'external'
> would not be an ideal name for routes.  There could definitely be confusion
> about what this might mean since many routes are to external networks -- a
> collision/confusion that did not happen with FDB.
>
> Scott Feldman asked me to check with others and build concensus around a name.
> After speaking with several people about this I am proposing we refer to both
> FDB and FIB entries that are currently backed by hardware (based on the work
> done in rocker) with the flag 'offload' appended to the end ofthe entry.
>
> Some people liked the string 'external,' others liked 'hardware,' but the point
> is to communicate that these routes are available to something that will will
> offload the forwarding normally done by the kernel.  Since the term 'offload'
> is used so frequently it seems appropriate to use the same language in
> ip/bridge output.
>
> The term 'offload' also seems to resonate with many of the people who have
> responded on Scott's original thread or to those who I reached out to directly
> and did respond to my query, so it seems we have reached consensus that it
> should be the term used going forward.
>
> Signed-off-by: Andy Gospodarek <gospo@...ulusnetworks.com>
> CC: Jamal Hadi Salim <jhs@...atatu.com>
> CC: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
> CC: Jiri Pirko <jiri@...nulli.us>
> CC: John W. Linville <linville@...driver.com>
> CC: Roopa Prabhu <roopa@...ulusnetworks.com>
> CC: Scott Feldman <sfeldma@...il.com>
> CC: Stephen Hemminger <stephen@...workplumber.org>

Acked-by: Scott Feldman <sfeldma@...il.com>

Thanks Andy.
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