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Message-ID: <571e2fbc-ea6a-d231-79f0-37529e05eb98@redhat.com>
Date:   Mon, 3 Jul 2023 09:43:49 +0200
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Subject: Re: [PATCH v1 0/2] vduse: add support for networking devices
To:     Jason Wang <jasowang@redhat.com>,
        "Michael S. Tsirkin" <mst@redhat.com>
Cc:     xieyongji@bytedance.com, david.marchand@redhat.com,
        lulu@redhat.com, linux-kernel@vger.kernel.org,
        virtualization@lists.linux-foundation.org, netdev@vger.kernel.org,
        xuanzhuo@linux.alibaba.com, eperezma@redhat.com
References: <20230627113652.65283-1-maxime.coquelin@redhat.com>
 <20230702093530-mutt-send-email-mst@kernel.org>
 <CACGkMEtoW0nW8w6_Ew8qckjvpNGN_idwpU3jwsmX6JzbDknmQQ@mail.gmail.com>
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From:   Maxime Coquelin <maxime.coquelin@redhat.com>
In-Reply-To: <CACGkMEtoW0nW8w6_Ew8qckjvpNGN_idwpU3jwsmX6JzbDknmQQ@mail.gmail.com>
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On 7/3/23 08:44, Jason Wang wrote:
> On Sun, Jul 2, 2023 at 9:37 PM Michael S. Tsirkin <mst@redhat.com> wrote:
>>
>> On Tue, Jun 27, 2023 at 01:36:50PM +0200, Maxime Coquelin wrote:
>>> This small series enables virtio-net device type in VDUSE.
>>> With it, basic operation have been tested, both with
>>> virtio-vdpa and vhost-vdpa using DPDK Vhost library series
>>> adding VDUSE support using split rings layout (merged in
>>> DPDK v23.07-rc1).
>>>
>>> Control queue support (and so multiqueue) has also been
>>> tested, but requires a Kernel series from Jason Wang
>>> relaxing control queue polling [1] to function reliably.
>>>
>>> [1]: https://lore.kernel.org/lkml/CACGkMEtgrxN3PPwsDo4oOsnsSLJfEmBEZ0WvjGRr3whU+QasUg@mail.gmail.com/T/
>>
>> Jason promised to post a new version of that patch.
>> Right Jason?
> 
> Yes.
> 
>> For now let's make sure CVQ feature flag is off?
> 
> We can do that and relax on top of my patch.

I agree? Do you prefer a features negotiation, or failing init (like
done for VERSION_1) if the VDUSE application advertises CVQ?

Thanks,
Maxime

> Thanks
> 
>>
>>> RFC -> v1 changes:
>>> ==================
>>> - Fail device init if it does not support VERSION_1 (Jason)
>>>
>>> Maxime Coquelin (2):
>>>    vduse: validate block features only with block devices
>>>    vduse: enable Virtio-net device type
>>>
>>>   drivers/vdpa/vdpa_user/vduse_dev.c | 15 +++++++++++----
>>>   1 file changed, 11 insertions(+), 4 deletions(-)
>>>
>>> --
>>> 2.41.0
>>
>