On Fri, Jun 02, 2023 at 01:03:02AM +0300, Parav Pandit wrote:
> Add virtio net device notification coalescing improvements requirements.
>
> Signed-off-by: Parav Pandit <>
> ---
> net-workstream/features-1.4.md | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/net-workstream/features-1.4.md b/net-workstream/features-1.4.md
> index 054f951..fc36f31 100644
> --- a/net-workstream/features-1.4.md
> +++ b/net-workstream/features-1.4.md
> @@ -8,6 +8,7 @@ together is desired while updating the virtio net interface.
> # 2. Summary
> 1. Device counters visible to the driver
> 2. Low latency tx and rx virtqueues for PCI transport
> +3. Virtqueue notification coalescing re-arming support
>
> # 3. Requirements
> ## 3.1 Device counters
> @@ -143,3 +144,10 @@ struct vnet_rx_completion {
> 7. The device should be able to indicate when a full page buffer is consumed,
>
which can be recycled by the driver when the packets from the completed
>
page is fully consumed.
> +
> +## 3.3 Virtqueue notification coalescing re-enable support
> +1. Tx and Rx virtqueue notification coalescing should auto-disable on
> +
notification reporting to the driver. The driver should be able to enable
> +
coalescing after processing the packets per VQ. This ensures that when
> +
networking stack decides to poll, no new notifications are generated when
> +
per VQ notification coalescing is used.
Weirdly specific.
I don't know what does auto-disable and enable coalescing mean.
Does this refer to VIRTIO_NET_F_NOTF_COAL?
what is the problem this is trying to solve?
> --
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