netdev - Re: [patch net-next 00/26] bonding/team offload + mlxsw implementation

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Message-ID: <20151201164719.GA2548@nanopsycho>
Date:	Tue, 1 Dec 2015 17:47:19 +0100
From:	Jiri Pirko <jiri@...nulli.us>
To:	Or Gerlitz <gerlitz.or@...il.com>
Cc:	Linux Netdev List <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Ido Schimmel <idosch@...lanox.com>,
	Elad Raz <eladr@...lanox.com>, yotamg@...lanox.com,
	Or Gerlitz <ogerlitz@...lanox.com>, pjonnala@...adcom.com,
	j.vosburgh@...il.com, vfalico@...il.com,
	Andy Gospodarek <gospo@...ulusnetworks.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Scott Feldman <sfeldma@...il.com>,
	john fastabend <john.fastabend@...il.com>
Subject: Re: [patch net-next 00/26] bonding/team offload + mlxsw
 implementation

Tue, Dec 01, 2015 at 05:35:43PM CET, gerlitz.or@...il.com wrote:
>On Tue, Dec 1, 2015 at 5:12 PM, Jiri Pirko <jiri@...nulli.us> wrote:
>> Tue, Dec 01, 2015 at 04:06:23PM CET, gerlitz.or@...il.com wrote:
>>>On Tue, Dec 1, 2015 at 4:43 PM, Jiri Pirko <jiri@...nulli.us> wrote:
>>>> Tue, Dec 01, 2015 at 02:48:38PM CET, jiri@...nulli.us wrote:
>
>>>>>This patchset introduces needed infrastructure for link aggregation
>>>>>offload - for both team and bonding. It also implements the offload
>>>>>in mlxsw driver.
>
>>>I didn't see any changes to switchdev.h, can you elaborate on that please.
>
>> Correct. This patchset does not extend switchdev api. The extension is
>> done for netdev notifiers. It seems natural and correct.
>> As we discussed already with John on a different thread, it makes sense
>> for non-switchdev drivers to benefit from this extensions as well.
>
>This is understood.
>
>However, the point which is still not clear to me related to the LAG /
>switchdev object model.
>
>All of FDB/VLAN/FIB switchdev objects have corresponding software counterparts
>in the kernel --- what's the case for LAG? the software construct is
>bond or team
>instance, shouldn't there  be a modeling of the HW LAG object in switchdev?

No need for that, what that would be good for?

Switchdev iface (most of it) works with struct net_device. Does not matter
if that is the port netdev direclty, or if it is team/bonding netdev.
It falls into the picture very nicely.

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