netdev - Re: [net-next PATCH v5 0/6] XDP for virtio

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Message-Id: <20161208.171602.544798927904408724.davem@davemloft.net>
Date:   Thu, 08 Dec 2016 17:16:02 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     john.fastabend@...il.com
Cc:     alexei.starovoitov@...il.com, daniel@...earbox.net, mst@...hat.com,
        shm@...ulusnetworks.com, tgraf@...g.ch, john.r.fastabend@...el.com,
        netdev@...r.kernel.org, brouer@...hat.com
Subject: Re: [net-next PATCH v5 0/6] XDP for virtio_net

From: John Fastabend <john.fastabend@...il.com>
Date: Thu, 8 Dec 2016 12:46:07 -0800

> On 16-12-08 11:38 AM, Alexei Starovoitov wrote:
>> On Thu, Dec 08, 2016 at 02:17:02PM -0500, David Miller wrote:
>>> From: John Fastabend <john.fastabend@...il.com>
>>> Date: Wed, 07 Dec 2016 12:10:47 -0800
>>>
>>>> This implements virtio_net for the mergeable buffers and big_packet
>>>> modes. I tested this with vhost_net running on qemu and did not see
>>>> any issues. For testing num_buf > 1 I added a hack to vhost driver
>>>> to only but 100 bytes per buffer.
>>>  ...
>>>
>>> So where are we with this?
> 
> There is one possible issue with a hang that Michael pointed out. I can
> either spin a v6 or if you pull this v5 series in I can post a bugfix
> for it. I am not seeing the issue in practice XDP virtio has been up
> and running on my box here for days without issue.

If that's the case then please spin a v6 and I'll apply it.