On 1/11/21 1:16 PM, Jiayu Hu wrote:
> Async enqueue offloads large copies to DMA devices, and small copies
> are still performed by the CPU. However, it requires users to get
> enqueue completed packets by rte_vhost_poll_enqueue_completed(), even
> if they are completed by the CPU when rte_vhost_submit_enqueue_burst()
> returns. This design incurs extra overheads of tracking completed
> pktmbufs and function calls, thus degrading performance on small packets.
>
> The first patch cleans up async enqueue code, and the second patch
> enables rte_vhost_submit_enqueue_burst() to return completed packets.
>
> Change log
> ==========
> v4:
> - support new API in vhost example
> v3:
> - fix incorrect ret value when DMA ring is full
> - enhance description of API declaration and programmer guide
> v2:
> - fix typo
> - rename API variables
> - update programmer guide
>
> Jiayu Hu (2):
> vhost: cleanup async enqueue
> vhost: enhance async enqueue for small packets
>
> doc/guides/prog_guide/vhost_lib.rst | 8 +-
> examples/vhost/main.c | 18 ++-
> lib/librte_vhost/rte_vhost_async.h | 34 +++--
> lib/librte_vhost/vhost.c | 14 +-
> lib/librte_vhost/vhost.h | 7 +-
> lib/librte_vhost/vhost_user.c | 7 +-
> lib/librte_vhost/virtio_net.c | 258
> ++++++++++++++++++++----------------
> 7 files changed, 200 insertions(+), 146 deletions(-)
>
Applied to dpdk-next-virtio/main.
Thanks,
Maxime
