When do you expect or desire to merge it into upstream DPDK? It's always better to know the intended roadmap, thanks.
29/08/2022 17:40, Hau: > Hi Honnappa, > > Thanks for prompt reply. > Currently our pmd driver still has other issues. After we fix it, we will > submit our code as RFC. > > Thanks, > Hau > > From: Honnappa Nagarahalli [mailto:honnappa.nagaraha...@arm.com] > Sent: Saturday, August 27, 2022 12:44 AM > To: xing_wang <xing_w...@realsil.com.cn>; dev@dpdk.org > Cc: dali_chen <dali_c...@realsil.com.cn>; howard_wang > <howard_w...@realsil.com.cn>; Ruifeng Wang <ruifeng.w...@arm.com>; Hau > <h...@realtek.com>; nd <n...@arm.com> > Subject: RE: about RTL8168 PMD on ARM SoC > > Hi Xing Wang, > Can you submit this code as RFC, it will enable us to provide > review comments? > > Thanks, > Honnappa > > > From: 王星 <xing_w...@realsil.com.cn<mailto:xing_w...@realsil.com.cn>> > Sent: Thursday, August 25, 2022 9:36 PM > To: Honnappa Nagarahalli > <honnappa.nagaraha...@arm.com<mailto:honnappa.nagaraha...@arm.com>>; > dev@dpdk.org<mailto:dev@dpdk.org> > Cc: 陈立 <dali_c...@realsil.com.cn<mailto:dali_c...@realsil.com.cn>>; 王颢 > <howard_w...@realsil.com.cn<mailto:howard_w...@realsil.com.cn>>; Ruifeng Wang > <ruifeng.w...@arm.com<mailto:ruifeng.w...@arm.com>>; nd > <n...@arm.com<mailto:n...@arm.com>>; nd <n...@arm.com<mailto:n...@arm.com>>; > Hau <h...@realtek.com<mailto:h...@realtek.com>> > Subject: 答复: about RTL8168 PMD on ARM SoC > > Hi Honnappa, > > I’m sorry I have to make a little correction, > This issue was actually on our new 2.5 Gigabit RTL8125 series, the attachment > is latest r8125pmd, > There is no essential difference w.r.t ARM platform though. > > BRs, > Xing Wang > > 发件人: 王星 > 发送时间: 2022年8月26日 10:06 > 收件人: 'Honnappa Nagarahalli' > <honnappa.nagaraha...@arm.com<mailto:honnappa.nagaraha...@arm.com>>; > dev@dpdk.org<mailto:dev@dpdk.org> > 抄送: 陈立 <dali_c...@realsil.com.cn<mailto:dali_c...@realsil.com.cn>>; 王颢 > <howard_w...@realsil.com.cn<mailto:howard_w...@realsil.com.cn>>; Ruifeng Wang > <ruifeng.w...@arm.com<mailto:ruifeng.w...@arm.com>>; nd > <n...@arm.com<mailto:n...@arm.com>>; nd <n...@arm.com<mailto:n...@arm.com>>; > Hau <h...@realtek.com<mailto:h...@realtek.com>> > 主题: 答复: about RTL8168 PMD on ARM SoC > > Hi Honnappa, > > The attachment is our current r8168pmd code for RTL8111/8168 Giga series > (currently 8111G, 8111H are supported, we will add others later) > I will contact the SoC vendor to consult you about this issue and let you > know some details about that SoC > Thanks a lot! > > BRs > Xing Wang > 发件人: Honnappa Nagarahalli [mailto:honnappa.nagaraha...@arm.com] > 发送时间: 2022年8月25日 22:41 > 收件人: 王星 <xing_w...@realsil.com.cn<mailto:xing_w...@realsil.com.cn>>; > dev@dpdk.org<mailto:dev@dpdk.org> > 抄送: 陈立 <dali_c...@realsil.com.cn<mailto:dali_c...@realsil.com.cn>>; 王颢 > <howard_w...@realsil.com.cn<mailto:howard_w...@realsil.com.cn>>; Ruifeng Wang > <ruifeng.w...@arm.com<mailto:ruifeng.w...@arm.com>>; nd > <n...@arm.com<mailto:n...@arm.com>>; nd <n...@arm.com<mailto:n...@arm.com>> > 主题: RE: about RTL8168 PMD on ARM SoC > > Hello, > I cannot find many details of the SoC on the internet. Does it > use coherent IO? Depending on that, different barriers might be needed. Other > than this, I would not think it needs anything special. > > If you could send an RFC to the DPDK mailing list, I am happy to review and > provide any feedback. > > Thanks, > Honnappa > > > From: 王星 <xing_w...@realsil.com.cn<mailto:xing_w...@realsil.com.cn>> > Sent: Wednesday, August 24, 2022 9:53 PM > To: dev@dpdk.org<mailto:dev@dpdk.org> > Cc: 陈立 <dali_c...@realsil.com.cn<mailto:dali_c...@realsil.com.cn>>; 王颢 > <howard_w...@realsil.com.cn<mailto:howard_w...@realsil.com.cn>> > Subject: about RTL8168 PMD on ARM SoC > > Hi DPDK, > > I am a pmd driver developer from Realtek NIC department, > when I was porting r8168pmd already verified on x86 to an ARM64 SoC Unisoc: > UIS8650 > I found that after NIC Rx init (in general, Rx ring and buffers should have > been prepared for NIC to DMA read), > the NIC status reg showed RDU (Rx Descriptor Unavailable), which means NIC > cannot read the proper desc content, > > later I sended some packets to NIC hold by testpmd rx_only mode, HW internal > Rx packet counter can grow to some value, then stuck, 8168pmd Rx debug print > reported it received less packets than that value, and the print showed up > even some minutes later! > > I doubt the phenomenon is caused by improper HW-based IO coherency support on > this ARM SoC, > I have read the ARM SoC support list on DPDK website, to name it: NV > Bluefield, NXP DPAA, Marvell Octeon TX … > > Does DPDK (or UIO/VFIO driver or hugetlb driver) need special HW IO cache > coherency support on ARM platform, say, ACE and Device side MMU etc? > Should the SoC provide specialized UIO/VFIO driver or hugetlb driver and/or > specific DPDK lib to support such user mode DMA? > Will you please give suggestions, thanks a lot! > > BRs > > ------Please consider the environment before printing this e-mail. >
