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Date: Wed, 23 Dec 2020 21:39:19 -0500 From: Willem de Bruijn <willemdebruijn.kernel@...il.com> To: wangyunjian <wangyunjian@...wei.com> Cc: Network Development <netdev@...r.kernel.org>, "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>, virtualization@...ts.linux-foundation.org, "Lilijun (Jerry)" <jerry.lilijun@...wei.com>, chenchanghu <chenchanghu@...wei.com>, xudingke <xudingke@...wei.com>, "huangbin (J)" <brian.huangbin@...wei.com> Subject: Re: [PATCH net v4 2/2] vhost_net: fix tx queue stuck when sendmsg fails On Wed, Dec 23, 2020 at 9:25 PM wangyunjian <wangyunjian@...wei.com> wrote: > > From: Yunjian Wang <wangyunjian@...wei.com> > > Currently the driver doesn't drop a packet which can't be sent by tun > (e.g bad packet). In this case, the driver will always process the > same packet lead to the tx queue stuck. > > To fix this issue: > 1. in the case of persistent failure (e.g bad packet), the driver > can skip this descriptor by ignoring the error. > 2. in the case of transient failure (e.g -EAGAIN and -ENOMEM), the > driver schedules the worker to try again. > > Fixes: 3a4d5c94e959 ("vhost_net: a kernel-level virtio server") > Signed-off-by: Yunjian Wang <wangyunjian@...wei.com> Acked-by: Willem de Bruijn <willemb@...gle.com> Thanks.
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