From: Thomas Monjalon <thomas@monjalon.net>
To: "Yigit, Ferruh" <ferruh.yigit@intel.com>,
"Xia, Chenbo" <chenbo.xia@intel.com>
Cc: Xueming Li <xuemingl@nvidia.com>,
Viacheslav Ovsiienko <viacheslavo@nvidia.com>,
"dev@dpdk.org" <dev@dpdk.org>,
parav@nvidia.com, jgg@nvidia.com
Subject: Re: [dpdk-dev] [RFC 00/14] mlx5: support SubFunction
Date: Fri, 11 Jun 2021 09:54:10 +0200 [thread overview]
Message-ID: <3100339.2ytdHBWMnH@thomas> (raw)
In-Reply-To: <BY5PR11MB4055DD8D9EACCA2DB9ED3F019C349@BY5PR11MB4055.namprd11.prod.outlook.com>
11/06/2021 07:14, Xia, Chenbo:
> From: Thomas Monjalon <thomas@monjalon.net>
> > 10/06/2021 12:33, Ferruh Yigit:
> > > On 5/27/2021 2:37 PM, Xueming Li wrote:
> > > > SubFunction [1] is a portion of the PCI device, a SF netdev has its
> > own
> > > > dedicated queues(txq, rxq). A SF shares PCI level resources with other
> > > > SFs and/or with its parent PCI function. Auxiliary bus is the
> > > > fundamental of SF.
> > > >
> > > > This patch set introduces SubFunction support for mlx5 PMD driver
> > > > including class net, regex, vdpa and compress.
> > > >
> > >
> > > There is already an mdev patch, originated from long ago. Aren't
> > subfunctions
> > > presented as mdev device? If so can't we use mdev for it?
> >
> > No unfortunately that's different.
> > mlx5 SF is based on top of auxiliary bus in the kernel/sysfs.
>
> Just out of curiosity:
>
> Does SF use mdev before aux bus is introduced in kernel. I see some history
> of it but am not sure: [1] seems SF was base on mdev. [2] seems BlueField
> software v2.5 is using mdev for SF. I saw it yesterday and try to figure
> out the history. Since you are here, guess you know something 😊
>
> [1] https://patchwork.ozlabs.org/project/netdev/cover/20191107160448.20962-1-parav@mellanox.com/
> [2] https://docs.mellanox.com/display/BlueFieldSWv25011176/Mediated+Devices
Kernel maintainers rejected the use of mdev for this purpose
and suggested to use a real bus.
You can follow the discussion here:
https://lore.kernel.org/netdev/20191108205204.GB1277001@kroah.com/
Does Intel plan to use mdev for SF?
For the sake of follow-up discussion, this is the official mdev doc:
https://www.kernel.org/doc/Documentation/vfio-mediated-device.txt
next prev parent reply other threads:[~2021-06-11 7:54 UTC|newest]
Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-27 13:37 Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 01/14] common/mlx5: add common device driver Xueming Li
2021-06-10 9:51 ` Thomas Monjalon
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 00/14] net/mlx5: support Sub-Function Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 00/16] " Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 01/16] common/mlx5: rename eth device class name Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 02/16] common/mlx5: add common device driver Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 03/16] common/mlx5: move description of PCI sysfs functions Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 04/16] common/mlx5: support auxiliary bus Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 05/16] common/mlx5: get PCI device address from any bus Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 06/16] net/mlx5: remove PCI dependency Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 07/16] net/mlx5: migrate to bus-agnostic common driver Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 08/16] net/mlx5: support SubFunction Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 09/16] net/mlx5: check max Verbs port number Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 10/16] regex/mlx5: migrate to common driver Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 11/16] vdpa/mlx5: define driver name as macro Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 12/16] vdpa/mlx5: remove PCI specifics Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 13/16] vdpa/mlx5: support SubFunction Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 14/16] compress/mlx5: migrate to common driver Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 15/16] crypto/mlx5: " Xueming Li
2021-07-21 14:37 ` [dpdk-dev] [PATCH v4 16/16] common/mlx5: clean up legacy PCI bus driver Xueming Li
2021-07-21 22:24 ` [dpdk-dev] [PATCH v4 00/16] net/mlx5: support Sub-Function Thomas Monjalon
2021-07-22 3:03 ` Xueming(Steven) Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 01/14] common/mlx5: add common device driver Xueming Li
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 00/14] net/mlx5: support Sub-Function Xueming Li
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 01/14] common/mlx5: add common device driver Xueming Li
2021-07-14 5:58 ` Slava Ovsiienko
2021-07-18 18:28 ` Thomas Monjalon
2021-07-19 4:05 ` Xueming(Steven) Li
2021-07-19 2:53 ` [dpdk-dev] [PATCH v3 00/15] net/mlx5: support Sub-Function Xueming Li
2021-07-19 2:53 ` [dpdk-dev] [PATCH v3 01/15] common/mlx5: rename eth device class name Xueming Li
2021-07-19 2:53 ` [dpdk-dev] [PATCH v3 02/15] common/mlx5: add common device driver Xueming Li
2021-07-19 2:53 ` [dpdk-dev] [PATCH v3 03/15] common/mlx5: move description of PCI sysfs functions Xueming Li
2021-07-19 2:53 ` [dpdk-dev] [PATCH v3 04/15] common/mlx5: support auxiliary bus Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 05/15] common/mlx5: get PCI device address from any bus Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 06/15] net/mlx5: remove PCI dependency Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 07/15] net/mlx5: migrate to bus-agnostic common driver Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 08/15] net/mlx5: support SubFunction Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 09/15] net/mlx5: check max Verbs port number Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 10/15] regex/mlx5: migrate to common driver Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 11/15] vdpa/mlx5: define driver name as macro Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 12/15] vdpa/mlx5: remove PCI specifics Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 13/15] vdpa/mlx5: support SubFunction Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 14/15] compress/mlx5: migrate to common driver Xueming Li
2021-07-19 2:54 ` [dpdk-dev] [PATCH v3 15/15] common/mlx5: clean up legacy PCI bus driver Xueming Li
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 02/14] common/mlx5: move description of PCI sysfs functions Xueming Li
2021-07-14 5:58 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 03/14] common/mlx5: support auxiliary bus Xueming Li
2021-07-14 5:58 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 04/14] common/mlx5: get PCI device address from any bus Xueming Li
2021-07-14 5:59 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 05/14] net/mlx5: remove PCI dependency Xueming Li
2021-07-14 5:59 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 06/14] net/mlx5: migrate to bus-agnostic common driver Xueming Li
2021-07-14 5:59 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 07/14] net/mlx5: support SubFunction Xueming Li
2021-07-14 5:59 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 08/14] net/mlx5: check max Verbs port number Xueming Li
2021-07-14 6:00 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 09/14] regex/mlx5: migrate to common driver Xueming Li
2021-07-14 6:00 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 10/14] vdpa/mlx5: define driver name as macro Xueming Li
2021-07-14 6:00 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 11/14] vdpa/mlx5: remove PCI specifics Xueming Li
2021-07-14 6:08 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 12/14] vdpa/mlx5: support SubFunction Xueming Li
2021-07-14 6:01 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 13/14] compress/mlx5: migrate to common driver Xueming Li
2021-07-14 6:01 ` Slava Ovsiienko
2021-07-13 13:14 ` [dpdk-dev] [PATCH v2 14/14] common/mlx5: clean up legacy PCI bus driver Xueming Li
2021-07-14 6:01 ` Slava Ovsiienko
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 02/14] common/mlx5: move description of PCI sysfs functions Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 03/14] common/mlx5: support auxiliary bus Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 04/14] common/mlx5: get PCI device address from any bus Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 05/14] net/mlx5: remove PCI dependency Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 06/14] net/mlx5: migrate to bus-agnostic common driver Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 07/14] net/mlx5: support SubFunction Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 08/14] net/mlx5: check max Verbs port number Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 09/14] regex/mlx5: migrate to common driver Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 10/14] vdpa/mlx5: define driver name as macro Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 11/14] vdpa/mlx5: remove PCI specifics Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 12/14] vdpa/mlx5: support SubFunction Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 13/14] compress/mlx5: migrate to common driver Xueming Li
2021-06-16 4:09 ` [dpdk-dev] [PATCH v1 14/14] common/mlx5: clean up legacy PCI bus driver Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 02/14] common/mlx5: move description of PCI sysfs functions Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 03/14] net/mlx5: remove PCI dependency Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 04/14] net/mlx5: migrate to bus-agnostic common driver Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 05/14] regex/mlx5: migrate to " Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 06/14] compress/mlx5: " Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 07/14] vdpa/mlx5: fix driver name Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 08/14] vdpa/mlx5: remove PCI specifics Xueming Li
2021-05-27 13:37 ` [dpdk-dev] [RFC 09/14] common/mlx5: clean up legacy PCI bus driver Xueming Li
2021-05-27 14:01 ` [dpdk-dev] [RFC 10/14] bus/auxiliary: introduce auxiliary bus Xueming Li
2021-05-27 14:01 ` [dpdk-dev] [RFC 11/14] common/mlx5: support " Xueming Li
2021-05-27 14:02 ` [dpdk-dev] [RFC 12/14] common/mlx5: get PCI device address from any bus Xueming Li
2021-05-27 14:02 ` [dpdk-dev] [RFC 13/14] vdpa/mlx5: support SubFunction Xueming Li
2021-05-27 14:02 ` [dpdk-dev] [RFC 14/14] net/mlx5: " Xueming Li
2021-06-10 10:33 ` [dpdk-dev] [RFC 00/14] mlx5: " Ferruh Yigit
2021-06-10 13:23 ` Thomas Monjalon
2021-06-11 5:14 ` Xia, Chenbo
2021-06-11 7:54 ` Thomas Monjalon [this message]
2021-06-15 2:10 ` Xia, Chenbo
2021-06-15 4:04 ` Parav Pandit
2021-06-15 5:33 ` Xia, Chenbo
2021-06-15 5:43 ` Parav Pandit
2021-06-15 11:19 ` Xia, Chenbo
2021-06-15 12:47 ` Parav Pandit
2021-06-15 15:19 ` Jason Gunthorpe
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