[dpdk-dev] [PATCH] net/virtio-user: fix multiqueue support with vhost kernel

Stephen Hemminger stephen at networkplumber.org
Tue Mar 12 18:42:39 CET 2019

On Tue, 12 Mar 2019 15:13:07 +0800
Tiwei Bie <tiwei.bie at intel.com> wrote:

> The multiqueue support in virtio-user with vhost kernel backend
> is broken when tap name isn't specified by users explicitly,
> because the tap name returned by ioctl(TUNSETIFF) isn't saved
> properly, and multiple tap interfaces will be created in this
> case. Fix this by saving the dynamically allocated tap name
> first before reusing the ifr structure. Besides, also make it
> possible to support the format string in tap name (e.g. foo%d)
> specified by users explicitly.
> Fixes: 791b43e08842 ("net/virtio-user: specify MAC of the tap")
> Cc: stable at dpdk.org
> Reported-by: Stephen Hemminger <stephen at networkplumber.org>
> Signed-off-by: Tiwei Bie <tiwei.bie at intel.com>

Reviewed-by: Stephen Hemminger <stephen at networkplumber.org>

Does this have any impact on primary/secondary support?

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