[dpdk-dev] [PATCH] vhost: fix missing flag reset on stop

[Loftus, Ciara]

> 
> Commit 550c9d27d143 ("vhost: set/reset device flags internally") moves
> the VIRTIO_DEV_RUNNING set/reset to vhost lib. But I missed one reset
> on stop; here fixes it.
> 
> Fixes: 550c9d27d143 ("vhost: set/reset device flags internally")
> 
> Reported-by: Loftus Ciara <ciara.loftus at intel.com>
> Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
> ---
>  lib/librte_vhost/vhost_user/virtio-net-user.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/librte_vhost/vhost_user/virtio-net-user.c
> b/lib/librte_vhost/vhost_user/virtio-net-user.c
> index a6a48dc..e7c4347 100644
> --- a/lib/librte_vhost/vhost_user/virtio-net-user.c
> +++ b/lib/librte_vhost/vhost_user/virtio-net-user.c
> @@ -317,8 +317,10 @@ user_get_vring_base(int vid, struct
> vhost_vring_state *state)
>  	if (dev == NULL)
>  		return -1;
>  	/* We have to stop the queue (virtio) if it is running. */
> -	if (dev->flags & VIRTIO_DEV_RUNNING)
> +	if (dev->flags & VIRTIO_DEV_RUNNING) {
> +		dev->flags &= ~VIRTIO_DEV_RUNNING;
>  		notify_ops->destroy_device(vid);
> +	}
> 
>  	/* Here we are safe to get the last used index */
>  	vhost_get_vring_base(vid, state->index, state);
> --
> 1.9.0

Thanks for the patch. I've tested it and it solves the issue I was seeing where destroy_device was being called too many times.

Tested-by: Ciara Loftus <ciara.loftus at intel.com>