Hello Qiming, Did you try to remove PCI reset at igbuio_pci_open ? Reverting the patch entirely will get us back to VF issues
Regards, Gregory On Friday, 15 September 2017 11:04:16 IDT Yang, Qiming wrote: > Hi, Thomas > We meet a urgent issue because of Shijith's patch. > When use DPDK version 17.08, DPDK VF driver and kernel PF driver, i40e, ixgbe > and qede(Harish said) VF all meet initial failure. > This issue only occurred when use 17.08 igb_uio, vfio-pci and 17.05 igb_uio > all works well. > Considering this issue will block our vf driver develop and test work, could > we revert this patch first and find another appropriate way? > > Qiming > > > -----Original Message----- > > From: Patil, Harish [mailto:harish.pa...@cavium.com] > > Sent: Thursday, September 14, 2017 3:45 AM > > To: Yigit, Ferruh <ferruh.yi...@intel.com>; Hu, Xuekun > > <xuekun...@intel.com>; > > Thotton, Shijith <shijith.thot...@cavium.com>; Yang, Qiming > > <qiming.y...@intel.com>; Gregory Etelson <greg...@weka.io> > > Cc: dev@dpdk.org; Tan, Jianfeng <jianfeng....@intel.com> > > Subject: Re: [dpdk-dev] vf init issue with patch igb_uio: issue FLR during > > open > > and release of device file > > > > > > > > -----Original Message----- > > From: dev <dev-boun...@dpdk.org> on behalf of Ferruh Yigit > > <ferruh.yi...@intel.com> > > Date: Wednesday, September 13, 2017 at 10:06 AM > > To: "Hu, Xuekun" <xuekun...@intel.com>, "Thotton, Shijith" > > <shijith.thot...@cavium.com>, "Yang, Qiming" <qiming.y...@intel.com>, > > Gregory Etelson <greg...@weka.io> > > Cc: "dev@dpdk.org" <dev@dpdk.org>, "Tan, Jianfeng" <jianfeng....@intel.com> > > Subject: Re: [dpdk-dev] vf init issue with patch igb_uio: issue FLR during > > open > > and release of device file > > > > >On 9/13/2017 3:25 PM, Hu, Xuekun wrote: > > >> I met the same issue too, only with i40e 2.1.26 PF kernel driver. > > >> > > >> -----Original Message----- > > >> From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Ferruh Yigit > > >> Sent: Wednesday, September 13, 2017 7:04 PM > > >> To: Shijith Thotton <shijith.thot...@caviumnetworks.com>; Yang, > > >>Qiming <qiming.y...@intel.com>; Gregory Etelson <greg...@weka.io> > > >> Cc: dev@dpdk.org; Tan, Jianfeng <jianfeng....@intel.com> > > >> Subject: Re: [dpdk-dev] vf init issue with patch igb_uio: issue FLR > > >>during open and release of device file > > >> > > >> On 9/13/2017 11:48 AM, Shijith Thotton wrote: > > >>> On Wed, Sep 13, 2017 at 07:51:30AM +0000, Yang, Qiming wrote: > > >>>> Hi, Shijith > > >>>> > > >>>> > > >>>> > > >>>> VF init error will happen after apply your patch, error log as > > >>>>below. If > > >>>> revert your commit, all things work well. And this issue is not > > >>>>only occur > > >>>> in i40 VF but also ixgbe. > > > > > >Hi Qiming, > > > > > >I can reproduce the issue for the case: > > > > > >1- i40e 2.1.26 PF kernel driver (NOT reproduced with 1.6.27-k) > > >2- DPDK app run on host, so both PF and VF are in host. Linux driver > > >for PF and DPDK for VF. (When VF used in a VM, Linux PF on host and > > >DPDK VF on guest, this works fine) > > > > > >And I confirm the function igbuio_pci_open() added with below patch is > > >causing it. > > > > > >igbuio_pci_open() does: > > > pci_reset_function(dev); > > > pci_set_master(dev); > > > > > >Don't know yet root cause of the error, will dig more. > > > > > >>>> > > >>>> Could you help to check it soon? > > >>>> > > >>>> > > >>>> > > >>>> [root@localhost app]# ./testpmd -c 7 -n 4 -- -i > > >>>> > > >>>> EAL: Detected 10 lcore(s) > > >>>> > > >>>> EAL: No free hugepages reported in hugepages-1048576kB > > >>>> > > >>>> EAL: Probing VFIO support... > > >>>> > > >>>> EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using > > >>>> unreliable clock cycles ! > > >>>> > > >>>> EAL: PCI device 0000:00:03.0 on NUMA socket -1 > > >>>> > > >>>> EAL: Invalid NUMA socket, default to 0 > > >>>> > > >>>> EAL: probe driver: 8086:154c net_i40e_vf > > >>>> > > >>>> i40evf_init_vf(): init_adminq failed: -53 > > >>>> > > >>>> i40evf_dev_init(): Init vf failed > > >>>> > > >>>> EAL: Requested device 0000:00:03.0 cannot be used > > >>>> > > >>>> > > >>>> > > >>>> commit b58eedfc7dd57eef6d12e2c654a52c834f36084a > > >>>> Author: Shijith Thotton <shijith.thot...@caviumnetworks.com> > > >>>> Date: Fri Jul 7 16:43:51 2017 +0530 > > >>>> > > >>>> igb_uio: issue FLR during open and release of device file > > >>>> > > >>>> Set UIO info device file operations open and release. Call pci > > >>>>reset > > >>>> function inside open and release to clear device state at start > > >>>>and end. > > >>>> Copied this behaviour from vfio_pci kernel module code. With > > >>>>this patch, > > >>>> it is not mandatory to issue FLR by PMD's during init and close. > > >>>> > > >>>> Bus master enable and disable are added in open and release > > >>>>respectively > > >>>> to take care of device DMA. > > >>>> > > >>>> Signed-off-by: Shijith Thotton <shijith.thot...@caviumnetworks.com> > > >>>> Reviewed-by: Jianfeng Tan <jianfeng....@intel.com> > > >>>> Acked-by: Ferruh Yigit <ferruh.yi...@intel.com> > > >>>> Acked-by: Gregory Etelson <greg...@weka.io> > > >>>> > > >>>> > > >>>> > > >>>> Best Regard, > > >>>> > > >>>> Yang Qiming > > >>>> > > >>>> > > >>> > > >>> Hi Yang Qiming, > > >>> > > >>> We didn't face this issue while preparing patch. I think, Gregory > > >>> tested it for Intel NICs. Adding more people to the loop for help. > > >>> > > >> > > >> I will try to reproduce the issue. > > >> > > >>> Shijith > > > > [Harish] We are seeing similar issue with the bringup of qede VF devices > > due to > > this patch. > > Could we revert this and leave it to individual PMDs to manage it? > > >> > >
