Re: [PATCH] vhost: fix slot index in async split virtqueue Tx

[Maxime Coquelin <maxime.coquelin@redhat.com>]

On 2/23/23 03:30, Cheng Jiang wrote:
> The slot_idx in the asynchronous Vhost split virtqueue dequeue data path
> is supposed to be decreased by 1 when desc_to_mbuf() fails.
> 
> Fixes: 84d5204310d7 ("vhost: support async dequeue for split ring")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Cheng Jiang <cheng1.jiang@intel.com>
> ---
>   lib/vhost/virtio_net.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
> index 8caf05319e..374007a61a 100644
> --- a/lib/vhost/virtio_net.c
> +++ b/lib/vhost/virtio_net.c
> @@ -3720,6 +3720,7 @@ virtio_dev_tx_async_split(struct virtio_net *dev, struct vhost_virtqueue *vq,
>   				allocerr_warned = true;
>   			}
>   			dropped = true;
> +			slot_idx--;
>   			break;
>   		}
> 
> --
> 2.35.1
> 

Applied to dpdk-next-virtio/main.

Thanks,
Maxime