From: "Michael S. Tsirkin" <mst@redhat.com>
To: Parav Pandit <parav@nvidia.com>
Cc: Jakub Kicinski <kuba@kernel.org>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"jasowang@redhat.com" <jasowang@redhat.com>,
Eli Cohen <elic@nvidia.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: [PATCH 0/7] Introduce vdpa management tool
Date: Wed, 16 Dec 2020 04:13:51 -0500
Message-ID: <20201216041303-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <BY5PR12MB432205C97D1AAEC1E8731FD4DCE20@BY5PR12MB4322.namprd12.prod.outlook.com>
On Tue, Nov 17, 2020 at 07:51:56PM +0000, Parav Pandit wrote:
>
>
> > From: Jakub Kicinski <kuba@kernel.org>
> > Sent: Tuesday, November 17, 2020 3:53 AM
> >
> > On Thu, 12 Nov 2020 08:39:58 +0200 Parav Pandit wrote:
> > > FAQs:
> > > -----
> > > 1. Where does userspace vdpa tool reside which users can use?
> > > Ans: vdpa tool can possibly reside in iproute2 [1] as it enables user
> > > to create vdpa net devices.
> > >
> > > 2. Why not create and delete vdpa device using sysfs/configfs?
> > > Ans:
> >
> > > 3. Why not use ioctl() interface?
> >
> > Obviously I'm gonna ask you - why can't you use devlink?
> >
> This was considered.
> However it seems that extending devlink for vdpa specific stats, devices, config sounds overloading devlink beyond its defined scope.
kuba what's your thinking here? Should I merge this as is?
> > > Next steps:
> > > -----------
> > > (a) Post this patchset and iproute2/vdpa inclusion, remaining two
> > > drivers will be coverted to support vdpa tool instead of creating
> > > unmanaged default device on driver load.
> > > (b) More net specific parameters such as mac, mtu will be added.
> >
> > How does MAC and MTU belong in this new VDPA thing?
> MAC only make sense when user wants to run VF/SF Netdev and vdpa together with different mac address.
> Otherwise existing devlink well defined API to have one MAC per function is fine.
> Same for MTU, if queues of vdpa vs VF/SF Netdev queues wants have different MTU it make sense to add configure per vdpa device.
next prev parent reply index
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-12 6:39 Parav Pandit
2020-11-12 6:39 ` [PATCH 1/7] vdpa: Add missing comment for virtqueue count Parav Pandit
2020-11-12 6:40 ` [PATCH 2/7] vdpa: Use simpler version of ida allocation Parav Pandit
2020-11-12 6:40 ` [PATCH 3/7] vdpa: Extend routine to accept vdpa device name Parav Pandit
2020-11-12 6:40 ` [PATCH 4/7] vdpa: Define vdpa parent device, ops and a netlink interface Parav Pandit
2020-11-12 6:40 ` [PATCH 5/7] vdpa: Enable a user to add and delete a vdpa device Parav Pandit
2020-11-12 6:40 ` [PATCH 6/7] vdpa: Enable user to query vdpa device info Parav Pandit
2020-11-12 6:40 ` [PATCH 7/7] vdpa/vdpa_sim: Enable user to create vdpasim net devices Parav Pandit
2020-11-16 9:41 ` [PATCH 0/7] Introduce vdpa management tool Stefan Hajnoczi
2020-11-17 19:41 ` Parav Pandit
2020-11-16 22:23 ` Jakub Kicinski
2020-11-17 19:51 ` Parav Pandit
2020-12-16 9:13 ` Michael S. Tsirkin [this message]
[not found] ` <20201216080610.08541f44@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
2020-12-16 16:54 ` Parav Pandit
2020-12-16 19:57 ` Michael S. Tsirkin
2020-12-17 12:13 ` Parav Pandit
2020-11-27 3:53 ` Jason Wang
[not found] ` <CACycT3sYScObb9nN3g7L3cesjE7sCZWxZ5_5R1usGU9ePZEeqA@mail.gmail.com>
2020-11-30 3:36 ` [External] " Jason Wang
2020-11-30 7:07 ` Yongji Xie
2020-12-01 6:25 ` Jason Wang
2020-12-01 9:55 ` Yongji Xie
2020-12-01 11:32 ` Parav Pandit
2020-12-01 14:18 ` Yongji Xie
2020-12-01 15:58 ` Parav Pandit
2020-12-02 3:29 ` Yongji Xie
2020-12-02 4:53 ` Parav Pandit
2020-12-02 5:51 ` Jason Wang
2020-12-02 6:24 ` Parav Pandit
2020-12-02 7:55 ` Jason Wang
2020-12-02 9:27 ` Yongji Xie
2020-12-02 9:21 ` Yongji Xie
2020-12-02 11:13 ` Parav Pandit
2020-12-02 13:18 ` Yongji Xie
2020-12-02 5:48 ` Jason Wang
2020-12-08 22:47 ` David Ahern
2021-01-19 4:21 ` Parav Pandit
2020-12-16 9:16 ` Michael S. Tsirkin
2021-01-04 3:31 ` [PATCH linux-next v2 " Parav Pandit
2021-01-04 3:31 ` [PATCH linux-next v2 1/7] vdpa_sim_net: Make mac address array static Parav Pandit
2021-01-04 7:00 ` Jason Wang
2021-01-04 3:31 ` [PATCH linux-next v2 2/7] vdpa_sim_net: Add module param to disable default vdpa net device Parav Pandit
2021-01-04 3:31 ` [PATCH linux-next v2 3/7] vdpa: Extend routine to accept vdpa device name Parav Pandit
2021-01-04 3:31 ` [PATCH linux-next v2 4/7] vdpa: Define vdpa mgmt device, ops and a netlink interface Parav Pandit
2021-01-04 7:03 ` Jason Wang
2021-01-04 7:24 ` Parav Pandit
2021-01-05 4:10 ` Jason Wang
2021-01-05 6:33 ` Parav Pandit
2021-01-05 8:36 ` Jason Wang
2021-01-04 3:31 ` [PATCH linux-next v2 5/7] vdpa: Enable a user to add and delete a vdpa device Parav Pandit
2021-01-04 3:31 ` [PATCH linux-next v2 6/7] vdpa: Enable user to query vdpa device info Parav Pandit
2021-01-04 3:31 ` [PATCH linux-next v2 7/7] vdpa_sim_net: Add support for user supported devices Parav Pandit
2021-01-04 7:05 ` Jason Wang
2021-01-04 7:21 ` Parav Pandit
2021-01-05 4:06 ` Jason Wang
2021-01-05 6:22 ` Parav Pandit
2021-01-05 10:31 ` [PATCH linux-next v3 0/6] Introduce vdpa management tool Parav Pandit
2021-01-05 10:31 ` [PATCH linux-next v3 1/6] vdpa_sim_net: Make mac address array static Parav Pandit
2021-01-07 13:45 ` Stefano Garzarella
2021-01-05 10:31 ` [PATCH linux-next v3 2/6] vdpa: Extend routine to accept vdpa device name Parav Pandit
2021-01-05 10:32 ` [PATCH linux-next v3 3/6] vdpa: Define vdpa mgmt device, ops and a netlink interface Parav Pandit
2021-01-05 10:32 ` [PATCH linux-next v3 4/6] vdpa: Enable a user to add and delete a vdpa device Parav Pandit
2021-01-05 10:32 ` [PATCH linux-next v3 5/6] vdpa: Enable user to query vdpa device info Parav Pandit
2021-01-05 10:32 ` [PATCH linux-next v3 6/6] vdpa_sim_net: Add support for user supported devices Parav Pandit
2021-01-05 11:48 ` Michael S. Tsirkin
2021-01-05 12:02 ` Parav Pandit
2021-01-05 12:14 ` Michael S. Tsirkin
2021-01-05 12:30 ` Parav Pandit
2021-01-05 13:23 ` Michael S. Tsirkin
2021-01-07 3:48 ` Parav Pandit
2021-01-12 4:14 ` Parav Pandit
2021-01-14 4:17 ` Jason Wang
2021-01-14 7:58 ` Parav Pandit
2021-01-15 5:38 ` Jason Wang
2021-01-15 6:27 ` Parav Pandit
2021-01-19 11:09 ` Jason Wang
2021-01-20 3:21 ` Parav Pandit
2021-01-20 3:46 ` Parav Pandit
2021-01-18 18:03 ` Parav Pandit
2021-01-20 7:53 ` Michael S. Tsirkin
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