Hi Yuan, On 12/16/22 03:00, Yuan Wang wrote:
Vhost asynchronous data-path offloads packet copy from the CPU to the DMA engine. As a result, large packet copy can be accelerated by the DMA engine, and vhost can free CPU cycles for higher level functions.In this patch, we enable asynchronous data-path for vhostpmd. Asynchronous data path is enabled per tx/rx queue, and users need to specify the DMA device used by the tx/rx queue. Each tx/rx queue only supports to use one DMA device, but one DMA device can be shared among multiple tx/rx queues of different vhost PMD ports. Two PMD parameters are added: - dmas: specify the used DMA device for a tx/rx queue. (Default: no queues enable asynchronous data path) - dma-ring-size: DMA ring size. (Default: 4096). Here is an example: --vdev 'eth_vhost0,iface=./s0,dmas=[txq0@0000:00.01.0;rxq0@0000:00.01.1],dma-ring-size=4096' Signed-off-by: Jiayu Hu <[email protected]> Signed-off-by: Yuan Wang <[email protected]> Signed-off-by: Wenwu Ma <[email protected]> --- drivers/net/vhost/meson.build | 1 + drivers/net/vhost/rte_eth_vhost.c | 512 ++++++++++++++++++++++++++++-- drivers/net/vhost/rte_eth_vhost.h | 15 + drivers/net/vhost/version.map | 7 + drivers/net/vhost/vhost_testpmd.c | 67 ++++ 5 files changed, 569 insertions(+), 33 deletions(-) create mode 100644 drivers/net/vhost/vhost_testpmd.c
This RFC is identical to the v5 that you sent for last release, and so the comments I made on it are still valid. Is this intentionally re-sent? Regards, Maxime
