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From: Andrew Rybchenko <arybchenko@solarflare.com>
To: Haiyue Wang <haiyue.wang@intel.com>, <dev@dpdk.org>,
	<anatoly.burakov@intel.com>, <thomas@monjalon.net>,
	<jerinj@marvell.com>, <david.marchand@redhat.com>
Subject: Re: [dpdk-dev] [PATCH v13 2/2] eal: support for VFIO-PCI VF token
Date: Wed, 6 May 2020 19:51:09 +0300	[thread overview]
Message-ID: <138c6483-6356-1d7d-2faf-693e81ddfda3@solarflare.com> (raw)
In-Reply-To: <20200506113524.30205-3-haiyue.wang@intel.com>

On 5/6/20 2:35 PM, Haiyue Wang wrote:
> The kernel module vfio-pci introduces the VF token to enable SR-IOV
> support since 5.7.
> 
> The VF token can be set by a vfio-pci based PF driver and must be known
> by the vfio-pci based VF driver in order to gain access to the device.
> 
> Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>

Sorry, lost from my view new versions of the patch series.

Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>

> diff --git a/doc/guides/linux_gsg/linux_drivers.rst b/doc/guides/linux_gsg/linux_drivers.rst
> index 238f3e900..910397243 100644
> --- a/doc/guides/linux_gsg/linux_drivers.rst
> +++ b/doc/guides/linux_gsg/linux_drivers.rst
> @@ -72,11 +72,44 @@ Note that in order to use VFIO, your kernel must support it.
>  VFIO kernel modules have been included in the Linux kernel since version 3.6.0 and are usually present by default,
>  however please consult your distributions documentation to make sure that is the case.
>  
> +The ``vfio-pci`` module since Linux version 5.7 supports the creation of virtual
> +functions. After the PF is bound to vfio-pci module, the user can create the VFs
> +by sysfs interface, and these VFs are bound to vfio-pci module automatically.
> +
> +When the PF is bound to vfio-pci, it has initial VF token generated by random. For
> +security reason, this token is write only, the user can't read it from the kernel
> +directly. For accessing the VF, the user needs to start the PF with token parameter
> +to setup a VF token (uuid format), then the VF can be accessed with this new known
> +VF token.

If token is write-only in kernel sysfs, shouldn't we make it
invisible in ps output? I.e. substitute with something like
xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.
It is a bit easier with the new design. Just a thought.

[snip]

  reply	other threads:[~2020-05-06 16:51 UTC|newest]

Thread overview: 92+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-05  4:33 [dpdk-dev] [RFC v1 1/1] vfio: set vf token and gain vf device access vattunuru
2020-04-01  3:14 ` Varghese, Vipin
2020-04-10  7:10   ` Vamsi Krishna Attunuru
2020-04-02 12:43 ` Wang, Haiyue
2020-04-10  7:28   ` Vamsi Krishna Attunuru
2020-04-10  7:43     ` Wang, Haiyue
2020-04-10  7:32 ` [dpdk-dev] [RFC v2] eal: add VFIO-PCI SR-IOV support Haiyue Wang
2020-04-10 13:02   ` [dpdk-dev] [EXT] " Vamsi Krishna Attunuru
2020-04-13  2:31 ` [dpdk-dev] [PATCH v1] " Haiyue Wang
2020-04-13  4:45 ` [dpdk-dev] [PATCH v2] " Haiyue Wang
2020-04-13  6:42 ` [dpdk-dev] [PATCH v3] " Haiyue Wang
2020-04-13  8:29 ` [dpdk-dev] [PATCH v4] " Haiyue Wang
2020-04-13 12:18   ` Thomas Monjalon
2020-04-13 17:01     ` Wang, Haiyue
2020-04-13 15:37   ` Andrew Rybchenko
2020-04-13 16:45     ` Wang, Haiyue
2020-04-14  3:06 ` [dpdk-dev] [PATCH v5 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-04-14  3:06   ` [dpdk-dev] [PATCH v5 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-04-14  3:06   ` [dpdk-dev] [PATCH v5 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-04-14  3:21 ` [dpdk-dev] [PATCH v6 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-04-14  3:21   ` [dpdk-dev] [PATCH v6 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-04-14  3:21   ` [dpdk-dev] [PATCH v6 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-04-14 13:18   ` [dpdk-dev] [EXT] [PATCH v6 0/2] support for VFIO-PCI VF token interface Vamsi Krishna Attunuru
2020-04-18  9:22   ` [dpdk-dev] " David Marchand
2020-04-18  9:38     ` Wang, Haiyue
2020-04-18  9:50       ` Thomas Monjalon
2020-04-18  9:58         ` Wang, Haiyue
2020-04-18 11:16 ` [dpdk-dev] [PATCH v7 " Haiyue Wang
2020-04-18 11:16   ` [dpdk-dev] [PATCH v7 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-04-18 11:16   ` [dpdk-dev] [PATCH v7 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-04-18 13:26     ` Thomas Monjalon
2020-04-18 17:37       ` Wang, Haiyue
2020-04-18 17:30 ` [dpdk-dev] [PATCH v8 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-04-18 17:30   ` [dpdk-dev] [PATCH v8 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-04-18 17:30   ` [dpdk-dev] [PATCH v8 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-04-20 17:12     ` Thomas Monjalon
2020-04-20 16:53   ` [dpdk-dev] [PATCH v8 0/2] support for VFIO-PCI VF token interface David Marchand
2020-04-20 17:02     ` Wang, Haiyue
2020-04-20 17:13       ` Thomas Monjalon
2020-04-20 17:37         ` Wang, Haiyue
2020-04-20 17:42           ` Thomas Monjalon
2020-04-21  1:38             ` Wang, Haiyue
2020-04-21  2:12               ` Thomas Monjalon
2020-04-21  2:52                 ` Wang, Haiyue
2020-04-21  8:47                   ` Thomas Monjalon
2020-04-21 17:35                     ` Wang, Haiyue
2020-04-22  5:08 ` [dpdk-dev] [PATCH v9 " Haiyue Wang
2020-04-22  5:08   ` [dpdk-dev] [PATCH v9 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-04-22  5:08   ` [dpdk-dev] [PATCH v9 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-04-22  8:23     ` Thomas Monjalon
2020-04-22 14:02       ` Wang, Haiyue
2020-04-26  1:55 ` [dpdk-dev] [PATCH v10 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-04-26  1:55   ` [dpdk-dev] [PATCH v10 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-04-26  1:55   ` [dpdk-dev] [PATCH v10 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-04-27 11:18     ` Burakov, Anatoly
2020-05-06 16:40     ` Andrew Rybchenko
2020-05-05  7:46 ` [dpdk-dev] [PATCH v11 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-05-05  7:46   ` [dpdk-dev] [PATCH v11 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-05-05  7:46   ` [dpdk-dev] [PATCH v11 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-05-05 10:34 ` [dpdk-dev] [PATCH v12 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-05-05 10:34   ` [dpdk-dev] [PATCH v12 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-05-05 10:34   ` [dpdk-dev] [PATCH v12 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-05-06 10:27     ` Burakov, Anatoly
2020-05-06 11:35       ` Wang, Haiyue
2020-05-06 11:39         ` Burakov, Anatoly
2020-05-06 11:44           ` Wang, Haiyue
2020-05-06 11:35 ` [dpdk-dev] [PATCH v13 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-05-06 11:35   ` [dpdk-dev] [PATCH v13 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-05-06 11:35   ` [dpdk-dev] [PATCH v13 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-05-06 16:51     ` Andrew Rybchenko [this message]
2020-05-06 16:56       ` Wang, Haiyue
2020-05-06 16:58         ` Andrew Rybchenko
2020-05-06 17:06           ` Wang, Haiyue
2020-05-28  1:22 ` [dpdk-dev] [PATCH v14 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-05-28  1:22   ` [dpdk-dev] [PATCH v14 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-05-28  1:22   ` [dpdk-dev] [PATCH v14 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-05-29  1:26     ` Ye Xiaolong
2020-05-29  1:38       ` Wang, Haiyue
2020-05-29  1:37 ` [dpdk-dev] [PATCH v15 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-05-29  1:37   ` [dpdk-dev] [PATCH v15 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-05-29  1:37   ` [dpdk-dev] [PATCH v15 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-06-17  6:33 ` [dpdk-dev] [PATCH v16 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-06-17  6:33   ` [dpdk-dev] [PATCH v16 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-06-17  6:33   ` [dpdk-dev] [PATCH v16 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-06-22 20:39     ` Harman Kalra
2020-06-25  7:33       ` David Marchand
2020-06-25 10:49         ` Wang, Haiyue
2020-07-03 14:57 ` [dpdk-dev] [PATCH v17 0/2] support for VFIO-PCI VF token interface Haiyue Wang
2020-07-03 14:57   ` [dpdk-dev] [PATCH v17 1/2] eal: add uuid dependent header files explicitly Haiyue Wang
2020-07-06 14:32     ` David Marchand
2020-07-03 14:57   ` [dpdk-dev] [PATCH v17 2/2] eal: support for VFIO-PCI VF token Haiyue Wang
2020-07-07 12:05     ` David Marchand

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