This patch set makes vhost-vswitch be able to use vhost async APIs for enqueue operations. Demonstrated how the application leverage IOAT DMA channel with vhost async APIs.
We introduce two parameters to enable DMA acceleration for Tx operations of queues: -dma_type This parameter is used to specify DMA type for async vhost-user net driver. -dmas This parameter is used to specify the assigned DMA device of a vhost device and enable async vhost data path. --- v7: * Improved IOAT callbacks and added some comments v6: * Cleand code and rebased for latest code v5: * Improved meson build file and fixed dependency problem v4: * Code rebased for latest IOAT driver v3: * Fixed a coding style problem v2: * Changed meson build file to fix dependency problem * Added parameter description in usage function * Optimized parameter settings and parsing function * Optimized abstraction, moved some code to ioat.c Cheng Jiang (4): example/vhost: add async vhost args parsing function example/vhost: add support for vhost async data path doc: update vhost sample doc for vhost async data path doc: update release notes for vhost sample doc/guides/rel_notes/release_20_11.rst | 6 + doc/guides/sample_app_ug/vhost.rst | 11 ++ examples/vhost/ioat.c | 217 +++++++++++++++++++++++++ examples/vhost/main.c | 94 ++++++++++- examples/vhost/main.h | 26 +++ examples/vhost/meson.build | 5 + 6 files changed, 357 insertions(+), 2 deletions(-) create mode 100644 examples/vhost/ioat.c -- 2.27.0
