netdev - Re: [PATCH net-next RFC 0/5] Add NTF_EXT_AGED to control FDB ageing in SW or HW

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Date:	Sat, 21 Feb 2015 06:53:04 +0530
From:	Siva Mannem <siva.mannem.lnx@...il.com>
To:	Scott Feldman <sfeldma@...il.com>
Cc:	Netdev <netdev@...r.kernel.org>,
	Jiří Pírko <jiri@...nulli.us>,
	Roopa Prabhu <roopa@...ulusnetworks.com>, linux@...ck-us.net,
	f.fainelli@...il.com, andrew@...n.ch, gospo@...ulusnetworks.com,
	vbandaru@...adcom.com
Subject: Re: [PATCH net-next RFC 0/5] Add NTF_EXT_AGED to control FDB ageing
 in SW or HW

On Fri, Feb 20, 2015 at 12:39 PM,  <sfeldma@...il.com> wrote:
> From: Scott Feldman <sfeldma@...il.com>
>
> Add a new NTF_EXT_FLAG to mark an FDB as externally aged, for example by
> offload hardware.   Switchdev driver/devices can set this flag when learning a
> new FDB entry and SW (the bridge driver) will skip this entry when running its
> ageing task.  If flag is set, the driver/device is responsible for calling
> call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL, ...) when entry expires.
>
> This give the flexibility for driver/device to decide ageing policy based on
> its capabilities.  For devices managing many FDB entries, it is desireable for
> the device to aged out its own entries.  Devices not capable of aged entries
> can rely of SW to age out the entries.
>
> Scott Feldman (5):
>   neighbour: add external aged flag
>   switchdev: add ntf_flags to FDB notifier
>   bridge: call external learn add if adding FDB entry with
>     NTF_EXT_LEARNED set
>   bridge: let HW control FDB ageing by setting NTF_EXT_AGED
>   rocker: explicitly set SW ageing for rocker
>
>  drivers/net/ethernet/rocker/rocker.c |    9 +++++----
>  include/net/switchdev.h              |    1 +
>  include/uapi/linux/neighbour.h       |    1 +
>  net/bridge/br.c                      |   18 ++++++++++--------
>  net/bridge/br_fdb.c                  |   16 +++++++++++++---
>  net/bridge/br_private.h              |    8 +++++---
>  6 files changed, 35 insertions(+), 18 deletions(-)
>
> --
> 1.7.10.4
>
Patches look good. With these, my earlier patch
(http://patchwork.ozlabs.org/patch/435597/) is no longer required.


-- 
Regards,
Siva Mannem.
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