netdev - RE: [net-next 1/5] ice: add the virtchnl handler for AdminQ command

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Message-ID: <BN8PR11MB3795FA12407090A2D95F97C6F74D0@BN8PR11MB3795.namprd11.prod.outlook.com>
Date:   Mon, 3 Aug 2020 10:39:52 +0000
From:   "Wang, Haiyue" <haiyue.wang@...el.com>
To:     Jakub Kicinski <kuba@...nel.org>, Tom Herbert <tom@...bertland.com>
CC:     "Venkataramanan, Anirudh" <anirudh.venkataramanan@...el.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "nhorman@...hat.com" <nhorman@...hat.com>,
        "sassmann@...hat.com" <sassmann@...hat.com>,
        "Bowers, AndrewX" <andrewx.bowers@...el.com>,
        "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>,
        "Lu, Nannan" <nannan.lu@...el.com>,
        "Liang, Cunming" <cunming.liang@...el.com>
Subject: RE: [net-next 1/5] ice: add the virtchnl handler for AdminQ command

> -----Original Message-----
> From: Jakub Kicinski <kuba@...nel.org>
> Sent: Tuesday, July 28, 2020 07:04
> To: Tom Herbert <tom@...bertland.com>
> Cc: Venkataramanan, Anirudh <anirudh.venkataramanan@...el.com>; Wang, Haiyue <haiyue.wang@...el.com>;
> davem@...emloft.net; nhorman@...hat.com; sassmann@...hat.com; Bowers, AndrewX
> <andrewx.bowers@...el.com>; Kirsher, Jeffrey T <jeffrey.t.kirsher@...el.com>; netdev@...r.kernel.org;
> Nguyen, Anthony L <anthony.l.nguyen@...el.com>; Lu, Nannan <nannan.lu@...el.com>
> Subject: Re: [net-next 1/5] ice: add the virtchnl handler for AdminQ command
> 


> In this case, I'm guessing, Intel can reuse RTE flow -> AQ code written
> to run on PFs on the special VF.
> 
> This community has selected switchdev + flower for programming flows.
> I believe implementing flower offloads would solve your use case, and
> at the same time be most beneficial to the netdev community.

Jakub,

Thanks, I deep into the switchdev, it is kernel software bridge for hardware
offload, and each port is registered with register_netdev. So this solution
is not suitable for current case: VF can be assigned to VMs.

BR,
Haiyue