netdev - Re: [PATCH 0/7] Introduce vdpa management tool

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Message-ID: <CAJSP0QXN2VGgKwQ_qL3Fr0dAYDviZcFDgUrE8FhHZwBm9wpBoQ@mail.gmail.com>
Date:   Mon, 16 Nov 2020 09:41:11 +0000
From:   Stefan Hajnoczi <stefanha@...il.com>
To:     Parav Pandit <parav@...dia.com>
Cc:     Linux Virtualization <virtualization@...ts.linux-foundation.org>,
        netdev@...r.kernel.org, elic@...dia.com,
        "Michael S. Tsirkin" <mst@...hat.com>
Subject: Re: [PATCH 0/7] Introduce vdpa management tool

Great! A few questions and comments:

How are configuration parameters passed in during device creation
(e.g. MAC address, number of queues)?

Can configuration parameters be changed at runtime (e.g. link up/down)?

Does the configuration parameter interface distinguish between
standard and vendor-specific parameters? Are they namespaced to
prevent naming collisions?

How are software-only parent drivers supported? It's kind of a shame
to modprobe unconditionally if they won't be used. Does vdpatool have
some way of requesting loading a parent driver? That way software
drivers can be loaded on demand.

What is the benefit of making it part of iproute2? If there is not a
significant advantage like sharing code, then I suggest using a
separate repository and package so vdpatool can be installed
separately (e.g. even on AF_VSOCK-only guests without Ethernet).

Stefan