Re: [PATCH v6] vhost_net: avoid tx queue stuck when sendmsg fails

On Thu, 7 Jan 2021 17:49:45 +0800 wangyunjian 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 -ENOBUFS, -EAGAIN and -ENOMEM),
   the driver schedules the worker to try again.

Signed-off-by: Yunjian Wang <redacted>

Hi! AFAIU this needs to go to net-next. You need to wait until net is
merged into net-next and then repost. It doesn't apply at the moment
and we get in excess of 100 patches a day right now so keeping track 
of dependencies on the maintainer side does not work. Also build bot
can't test it.

net should get merged into net-next some time tomorrow or on Saturday.