On Thu, Oct 12, 2023 at 3:44 PM Heng Qi <hengqi@xxxxxxxxxxxxxxxxx> wrote:
>
> rx netdim needs to count the traffic during a complete napi process,
> and start updating and comparing samples to make decisions after
> the napi ends. Let virtqueue_napi_complete() return true if napi is done,
> otherwise vice versa.
>
> Signed-off-by: Heng Qi <hengqi@xxxxxxxxxxxxxxxxx>
Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
Thanks
> ---
> drivers/net/virtio_net.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index a52fd743504a..cf5d2ef4bd24 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -431,7 +431,7 @@ static void virtqueue_napi_schedule(struct napi_struct *napi,
> }
> }
>
> -static void virtqueue_napi_complete(struct napi_struct *napi,
> +static bool virtqueue_napi_complete(struct napi_struct *napi,
> struct virtqueue *vq, int processed)
> {
> int opaque;
> @@ -440,9 +440,13 @@ static void virtqueue_napi_complete(struct napi_struct *napi,
> if (napi_complete_done(napi, processed)) {
> if (unlikely(virtqueue_poll(vq, opaque)))
> virtqueue_napi_schedule(napi, vq);
> + else
> + return true;
> } else {
> virtqueue_disable_cb(vq);
> }
> +
> + return false;
> }
>
> static void skb_xmit_done(struct virtqueue *vq)
> --
> 2.19.1.6.gb485710b
>
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