Re: [PATCH net v4 2/2] vhost_net: fix tx queue stuck when sendmsg fails
From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Date: 2020-12-24 02:40:40
Also in:
virtualization
On Wed, Dec 23, 2020 at 9:25 PM wangyunjian [off-list ref] wrote:
From: Yunjian Wang <redacted>
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 <redacted>Acked-by: Willem de Bruijn <willemb@google.com> Thanks.