[dpdk-dev] [PATCH v3] vhost: add unsafe API to check inflight packets

[Kevin Traynor]

On 16/09/2021 03:58, Xuan Ding wrote:
> In async data path, when vring state changes, it is necessary to
> know the number of inflight packets in DMA engine. This patch
> provides a thread unsafe API to return the number of inflight
> packets without using any lock.
> 
> Signed-off-by: Xuan Ding <xuan.ding at intel.com>
> ---
> v3:
> * Fixed one typo.
> * Revised the doc to be more accuracy.
> 
> v2:
> * Fixed some format issues.
> ---
>   doc/guides/prog_guide/vhost_lib.rst    |  5 +++++
>   doc/guides/rel_notes/release_21_11.rst |  5 +++++
>   lib/vhost/rte_vhost_async.h            | 14 ++++++++++++++
>   lib/vhost/version.map                  |  3 +++
>   lib/vhost/vhost.c                      | 26 ++++++++++++++++++++++++++
>   5 files changed, 53 insertions(+)
> 

<snip>

Should there be a change to the vring_state_changed() in vhost example 
app to go along with this patch? It would help to understand the 
operation if this API was used.