From: Julio Faracco <jcfaracco@gmail.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: netdev@vger.kernel.org, Jason Wang <jasowang@redhat.com>,
davem@davemloft.net, virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org,
Daiane Mendes <dnmendes76@gmail.com>
Subject: Re: [PATCH RFC net-next 0/2] drivers: net: virtio_net: Implement
Date: Mon, 7 Oct 2019 10:58:27 -0300 [thread overview]
Message-ID: <CAENf94Ky4Hrf+CyCTcKE8KXuVPECHc01OKRpKHGgykfeLe-jEg@mail.gmail.com> (raw)
In-Reply-To: <20191007034208-mutt-send-email-mst@kernel.org>
Em seg, 7 de out de 2019 às 04:43, Michael S. Tsirkin <mst@redhat.com> escreveu:
>
> On Sun, Oct 06, 2019 at 03:45:13PM -0300, jcfaracco@gmail.com wrote:
> > From: Julio Faracco <jcfaracco@gmail.com>
> >
> > Driver virtio_net is not handling error events for TX provided by
> > dev_watchdog. This event is reached when transmission queue is having
> > problems to transmit packets. To enable it, driver should have
> > .ndo_tx_timeout implemented. This serie has two commits:
> >
> > In the past, we implemented a function to recover driver state when this
> > kind of event happens, but the structure was to complex for virtio_net
> > that moment.
>
> It's more that it was missing a bunch of locks.
Actually, we submitted this patch as a RFC to understand the community
perspective about this missing feature:
Complexity versus performance versus solution.
>
> > Alternativelly, this skeleton should be enough for now.
> >
> > For further details, see thread:
> > https://lkml.org/lkml/2015/6/23/691
> >
> > Patch 1/2:
> > Add statistic field for TX timeout events.
> >
> > Patch 2/2:
> > Implement a skeleton function to debug TX timeout events.
> >
> > Julio Faracco (2):
> > drivers: net: virtio_net: Add tx_timeout stats field
> > drivers: net: virtio_net: Add tx_timeout function
> >
> > drivers/net/virtio_net.c | 33 ++++++++++++++++++++++++++++++++-
> > 1 file changed, 32 insertions(+), 1 deletion(-)
> >
> > --
> > 2.21.0
prev parent reply other threads:[~2019-10-07 13:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-06 18:45 [PATCH RFC net-next 0/2] drivers: net: virtio_net: Implement jcfaracco
2019-10-06 18:45 ` [PATCH RFC net-next 1/2] drivers: net: virtio_net: Add tx_timeout stats field jcfaracco
2019-10-07 14:15 ` Julian Wiedmann
2019-10-07 14:55 ` Julio Faracco
2019-10-06 18:45 ` [PATCH RFC net-next 2/2] drivers: net: virtio_net: Add tx_timeout function jcfaracco
2019-10-07 7:51 ` Michael S. Tsirkin
2019-10-07 14:03 ` Julio Faracco
2019-10-07 16:03 ` Julio Faracco
2019-10-12 12:59 ` Jason Wang
2019-10-12 13:01 ` Jason Wang
2019-10-07 7:43 ` [PATCH RFC net-next 0/2] drivers: net: virtio_net: Implement Michael S. Tsirkin
2019-10-07 13:58 ` Julio Faracco [this message]
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