On 6/11/20 12:02 PM, patrick...@intel.com wrote:
> From: Patrick <patrick...@intel.com>
>
> This patch introduces registration/un-registration APIs
> for async data path together with all required data
> structures and DMA callback function proto-types.
>
> Signed-off-by: Patrick <patrick...@intel.com>
> ---
> lib/librte_vhost/Makefile | 3 +-
> lib/librte_vhost/rte_vhost.h | 1 +
> lib/librte_vhost/rte_vhost_async.h | 134
> +++++++++++++++++++++++++++++++++++++
> lib/librte_vhost/socket.c | 20 ++++++
> lib/librte_vhost/vhost.c | 74 +++++++++++++++++++-
> lib/librte_vhost/vhost.h | 30 ++++++++-
> lib/librte_vhost/vhost_user.c | 28 ++++++--
> 7 files changed, 283 insertions(+), 7 deletions(-)
> create mode 100644 lib/librte_vhost/rte_vhost_async.h
>
> +/**
> + * register a dma channel for vhost
> + *
> + * @param vid
> + * vhost device id DMA channel to be attached to
> + * @param queue_id
> + * vhost queue id DMA channel to be attached to
> + * @param features
> + * DMA channel feature bit
> + * b0 : DMA supports inorder data transfer
> + * b1 - b15: reserved
> + * b16 - b27: Packet length threshold for DMA transfer
> + * b28 - b31: reserved
> + * @param ops
> + * DMA operation callbacks
> + * @return
> + * 0 on success, -1 on failures
> + */
> +int rte_vhost_async_channel_register(int vid, uint16_t queue_id,
> + uint32_t features, struct rte_vhost_async_channel_ops *ops);
> +
> +/**
> + * unregister a dma channel for vhost
> + *
> + * @param vid
> + * vhost device id DMA channel to be detached
> + * @param queue_id
> + * vhost queue id DMA channel to be detached
> + * @return
> + * 0 on success, -1 on failures
> + */
> +int rte_vhost_async_channel_unregister(int vid, uint16_t queue_id);
These new APIs need to be tagged as experimental. We'll need a few
releases before considering them stable.
You need to add them to rte_vhost_version.map too.
