virtnet_sq_bind_xsk_pool() flushes tx skbs and then resets tx queue, so
DQL counters need to be reset when flushing has actually occurred, Add
virtnet_sq_free_unused_buf_done() as a callback for virtqueue_resize()
to handle this.

Fixes: 21a4e3ce6dc7 ("virtio_net: xsk: bind/unbind xsk for tx")
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
---
 drivers/net/virtio_net.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 5eaa7a2884d5..177705a56812 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -5740,7 +5740,8 @@ static int virtnet_sq_bind_xsk_pool(struct virtnet_info *vi,
 
 	virtnet_tx_pause(vi, sq);
 
-	err = virtqueue_reset(sq->vq, virtnet_sq_free_unused_buf, NULL);
+	err = virtqueue_reset(sq->vq, virtnet_sq_free_unused_buf,
+			      virtnet_sq_free_unused_buf_done);
 	if (err) {
 		netdev_err(vi->dev, "reset tx fail: tx queue index: %d err: %d\n", qindex, err);
 		pool = NULL;
-- 
2.43.0

On Wed, Dec 4, 2024 at 1:08 PM Koichiro Den <koichiro.den@canonical.com> wrote:
>
> virtnet_sq_bind_xsk_pool() flushes tx skbs and then resets tx queue, so
> DQL counters need to be reset when flushing has actually occurred, Add
> virtnet_sq_free_unused_buf_done() as a callback for virtqueue_resize()
> to handle this.
>
> Fixes: 21a4e3ce6dc7 ("virtio_net: xsk: bind/unbind xsk for tx")
> Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
> ---

Acked-by: Jason Wang <jasowang@redhat.com>

Thanks