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

[Maxime Coquelin]

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: sta...@dpdk.org

Signed-off-by: Cheng Jiang <cheng1.ji...@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