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From: Jakub Kicinski <kuba@kernel.org>
To: Saeed Mahameed <saeed@kernel.org>
Cc: David Ahern <dsahern@gmail.com>, Jason Gunthorpe <jgg@nvidia.com>,
	Parav Pandit <parav@nvidia.com>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	Jiri Pirko <jiri@nvidia.com>,
	"dledford@redhat.com" <dledford@redhat.com>,
	Leon Romanovsky <leonro@nvidia.com>,
	"davem@davemloft.net" <davem@davemloft.net>
Subject: Re: [PATCH net-next 00/13] Add mlx5 subfunction support
Date: Thu, 19 Nov 2020 17:31:42 -0800	[thread overview]
Message-ID: <20201119173142.7090ba9e@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> (raw)
In-Reply-To: <29c4d7854faaea6db33136a448a8d2f53d0cfd72.camel@kernel.org>

On Wed, 18 Nov 2020 21:57:57 -0800 Saeed Mahameed wrote:
> On Wed, 2020-11-18 at 21:35 -0700, David Ahern wrote:
> > On 11/18/20 7:14 PM, Jakub Kicinski wrote:  
> > > On Tue, 17 Nov 2020 14:49:54 -0400 Jason Gunthorpe wrote:  
> > > > On Tue, Nov 17, 2020 at 09:11:20AM -0800, Jakub Kicinski wrote:
> > > >   
> > > > > > Just to refresh all our memory, we discussed and settled on
> > > > > > the flow
> > > > > > in [2]; RFC [1] followed this discussion.
> > > > > > 
> > > > > > vdpa tool of [3] can add one or more vdpa device(s) on top of
> > > > > > already
> > > > > > spawned PF, VF, SF device.    
> > > > > 
> > > > > Nack for the networking part of that. It'd basically be VMDq.    
> > > > 
> > > > What are you NAK'ing?   
> > > 
> > > Spawning multiple netdevs from one device by slicing up its queues.  
> > 
> > Why do you object to that? Slicing up h/w resources for virtual what
> > ever has been common practice for a long time.
> 
> We are not slicing up any queues, from our HW and FW perspective SF ==
> VF literally, a full blown HW slice (Function), with isolated control
> and data plane of its own, this is very different from VMDq and more
> generic and secure. an SF device is exactly like a VF, doesn't steal or
> share any HW resources or control/data path with others. SF is
> basically SRIOV done right.
> 
> this series has nothing to do with netdev, if you look at the list of
> files Parav is touching, there is 0 change in our netdev stack :) ..
> all Parav is doing is adding the API to create/destroy SFs and
> represents the low level SF function to devlink as a device, just
> like a VF.

Ack, the concern is about the vdpa, not SF. 
So not really this patch set.

  reply	other threads:[~2020-11-20  1:32 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-12 19:24 Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 01/13] devlink: Prepare code to fill multiple port function attributes Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 02/13] devlink: Introduce PCI SF port flavour and port attribute Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 03/13] devlink: Support add and delete devlink port Parav Pandit
2020-11-18 16:21   ` David Ahern
2020-11-18 17:02     ` Parav Pandit
2020-11-18 18:03       ` David Ahern
2020-11-18 18:38         ` Jason Gunthorpe
2020-11-18 19:36           ` David Ahern
2020-11-18 20:42             ` Jason Gunthorpe
2020-11-18 19:22         ` Parav Pandit
2020-11-19  0:41           ` Jacob Keller
2020-11-19  1:17             ` David Ahern
2020-11-19  1:56               ` Samudrala, Sridhar
2020-11-19  0:52       ` Jacob Keller
2020-11-12 19:24 ` [PATCH net-next 04/13] devlink: Support get and set state of port function Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 05/13] devlink: Avoid global devlink mutex, use per instance reload lock Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 06/13] devlink: Introduce devlink refcount to reduce scope of global devlink_mutex Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 07/13] net/mlx5: SF, Add auxiliary device support Parav Pandit
2020-12-07  2:48   ` David Ahern
2020-12-07  4:53     ` Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 08/13] net/mlx5: SF, Add auxiliary device driver Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 09/13] net/mlx5: E-switch, Prepare eswitch to handle SF vport Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 10/13] net/mlx5: E-switch, Add eswitch helpers for " Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 11/13] net/mlx5: SF, Add SF configuration hardware commands Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 12/13] net/mlx5: SF, Add port add delete functionality Parav Pandit
2020-11-12 19:24 ` [PATCH net-next 13/13] net/mlx5: SF, Port function state change support Parav Pandit
2020-11-16 22:52 ` [PATCH net-next 00/13] Add mlx5 subfunction support Jakub Kicinski
2020-11-17  0:06   ` Saeed Mahameed
2020-11-17  1:58     ` Jakub Kicinski
2020-11-17  4:08       ` Parav Pandit
2020-11-17 17:11         ` Jakub Kicinski
2020-11-17 18:49           ` Jason Gunthorpe
2020-11-19  2:14             ` Jakub Kicinski
2020-11-19  4:35               ` David Ahern
2020-11-19  5:57                 ` Saeed Mahameed
2020-11-20  1:31                   ` Jakub Kicinski [this message]
2020-11-25  5:33                   ` David Ahern
2020-11-25  6:00                     ` Parav Pandit
2020-11-25 14:37                       ` David Ahern
2020-11-20  1:29                 ` Jakub Kicinski
2020-11-20 17:58                   ` Alexander Duyck
2020-11-20 19:04                     ` Samudrala, Sridhar
2020-11-23 21:51                       ` Saeed Mahameed
2020-11-24  7:01                       ` Jason Wang
2020-11-24  7:05                         ` Jason Wang
2020-11-19  6:12               ` Saeed Mahameed
2020-11-19  8:25                 ` Parav Pandit
2020-11-20  1:35                 ` Jakub Kicinski
2020-11-20  3:34                   ` Parav Pandit
2020-11-17 18:50           ` Parav Pandit
2020-11-19  2:23             ` Jakub Kicinski
2020-11-19  6:22               ` Saeed Mahameed
2020-11-19 14:00                 ` Jason Gunthorpe
2020-11-20  3:35                   ` Jakub Kicinski
2020-11-20  3:50                     ` Parav Pandit
2020-11-20 16:16                     ` Jason Gunthorpe

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