netdev - Re: [PATCH/RFC net-next 1/2] devlink: expose port function commands to assign VFs to multiple netdevs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230206184227.64d46170@kernel.org>
Date:   Mon, 6 Feb 2023 18:42:27 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Simon Horman <simon.horman@...igine.com>
Cc:     David Miller <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        Michael Chan <michael.chan@...adcom.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        Gal Pressman <gal@...dia.com>,
        Saeed Mahameed <saeed@...nel.org>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Edward Cree <ecree.xilinx@...il.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Andrew Lunn <andrew@...n.ch>, Fei Qin <fei.qin@...igine.com>,
        netdev@...r.kernel.org, oss-drivers@...igine.com
Subject: Re: [PATCH/RFC net-next 1/2] devlink: expose port function commands
 to assign VFs to multiple netdevs

On Mon,  6 Feb 2023 16:36:02 +0100 Simon Horman wrote:
> +VF assignment setup
> +---------------------------
> +In some cases, NICs could have multiple physical ports per PF. Users can assign VFs to
> +different ports.

Please make sure you run make htmldocs when changing docs,
this will warn.

> +- Get count of VFs assigned to physical port::
> +
> +    $ devlink port show pci/0000:82:00.0/0
> +    pci/0000:82:00.0/0: type eth netdev enp130s0np0 flavour physical port 0 splittable true lanes 4

Physical port has VFs? My knee jerk reaction is that allocating
resources via devlink is fine but this seems to lean a bit into
forwarding. How do other vendors do it? What's the mapping of VFs
to ports?

What do you suggest should happen when user enables switchdev mode?