[dpdk-dev] [PATCH v2 1/2] vhost: Add API to get negotiated protocol features

[Ferruh Yigit]

On 3/22/2021 7:22 AM, Keiichi Watanabe wrote:
> Add rte_vhost_get_negotiated_protocol_features, which returns a set of
> enabled protocol features.
> 
> Signed-off-by: Keiichi Watanabe <keiichiw at chromium.org>

<...>

> diff --git a/lib/librte_vhost/version.map b/lib/librte_vhost/version.map
> index 9183d6f2f..95c4c0990 100644
> --- a/lib/librte_vhost/version.map
> +++ b/lib/librte_vhost/version.map
> @@ -63,6 +63,7 @@ EXPERIMENTAL {
>   	rte_vhost_va_from_guest_pa;
>   	rte_vhost_extern_callback_register;
>   	rte_vhost_driver_set_protocol_features;
> +	rte_vhost_get_negotiated_protocol_features;
>   	rte_vhost_set_inflight_desc_split;
>   	rte_vhost_set_inflight_desc_packed;
>   	rte_vhost_set_last_inflight_io_split;

Added the release version that experimental API is added as comment in next-net, 
like following:

  +++ b/lib/librte_vhost/version.map
  @@ -76,4 +76,7 @@ EXPERIMENTAL {
          rte_vhost_async_channel_unregister;
          rte_vhost_submit_enqueue_burst;
          rte_vhost_poll_enqueue_completed;
  +
  +       # added in 21.05
  +       rte_vhost_get_negotiated_protocol_features;
   };


We are doing this already in many libraries [1], this helps us easily observe 
how long an API is staying as experimental in a library.

[1]: https://git.dpdk.org/dpdk/tree/lib/librte_eal/version.map?h=v21.02#n407