[EXT] Re: [PATCH v2] app/dma-perf: support bi-directional transfer

[Amit Prakash Shukla]

Hi Chengwen,

Please see my reply in-line.

Thanks
Amit Shukla

> -----Original Message-----
> From: fengchengwen <fengchengwen at huawei.com>
> Sent: Wednesday, February 28, 2024 12:34 PM
> To: Amit Prakash Shukla <amitprakashs at marvell.com>; Cheng Jiang
> <honest.jiang at foxmail.com>; Gowrishankar Muthukrishnan
> <gmuthukrishn at marvell.com>
> Cc: dev at dpdk.org; Jerin Jacob <jerinj at marvell.com>; Anoob Joseph
> <anoobj at marvell.com>; Kevin Laatz <kevin.laatz at intel.com>; Bruce
> Richardson <bruce.richardson at intel.com>; Pavan Nikhilesh Bhagavatula
> <pbhagavatula at marvell.com>
> Subject: [EXT] Re: [PATCH v2] app/dma-perf: support bi-directional transfer
> 
> External Email
> 
> ----------------------------------------------------------------------
> Hi Amit and Gowrishankar,
> 
> It's nature to support multiple dmadev test in one testcase, and the original
> framework supports it.
> But it seem we both complicated it when adding support for non-mem2mem
> dma test.
> 
> The new added "direction" and "vchan_dev" could treat as the dmadev's
> private configure, some thing like:
> 
> lcore_dma=lcore10 at 0000:00:04.2,vchan=0,dir=mem2dev,devtype=pcie,radd
> r=xxx,coreid=1,pfid=2,vfid=3
> 
> then this bi-directional could impl only with config:
> 
> lcore_dma=lcore10 at 0000:00:04.2,dir=mem2dev,devtype=pcie,raddr=xxx,cor
> eid=1,pfid=2,vfid=3,
> lcore11 at 0000:00:04.3,dir=dev2mem,devtype=pcie,raddr=xxx,coreid=1,pfid=
> 2,vfid=3
> so that the lcore10 will do mem2dev with device 0000:00:04.2, while lcore11
> will do dev2mem with device 0000:00:04.3.

Thanks for the suggestion. I will make the suggested changes and send the next version.