Hi Maxime, Sorry about not being clear about the intentions. The patch is for a whitepaper, we use it for tests and we need to attach the patch link. Maybe I should set the patch state to superseded?
Thanks, Yuan > -----Original Message----- > From: Maxime Coquelin <maxime.coque...@redhat.com> > Sent: Monday, January 2, 2023 6:59 PM > To: Wang, YuanX <yuanx.w...@intel.com>; dev@dpdk.org > Cc: Hu, Jiayu <jiayu...@intel.com> > Subject: Re: [RFC] net/vhost: support asynchronous data path > > 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 <jiayu...@intel.com> > > Signed-off-by: Yuan Wang <yuanx.w...@intel.com> > > Signed-off-by: Wenwu Ma <wenwux...@intel.com> > > --- > > 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
