Yes, I have tried, and it works. But I think removing this function also makes the patch meaningless.
Qiming From: Gregory Etelson [mailto:[email protected]] Sent: Sunday, September 17, 2017 10:50 AM To: Yang, Qiming <[email protected]> Cc: [email protected]; [email protected]; Tan, Jianfeng <[email protected]>; Thotton, Shijith <[email protected]>; Hu, Xuekun <[email protected]>; Yigit, Ferruh <[email protected]>; Patil, Harish <[email protected]> Subject: Re: [dpdk-dev] vf init issue with patch igb_uio: issue FLR during open and release of device file 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:[email protected]] > > Sent: Thursday, September 14, 2017 3:45 AM > > To: Yigit, Ferruh <[email protected]<mailto:[email protected]>>; > > Hu, Xuekun <[email protected]<mailto:[email protected]>>; > > Thotton, Shijith > > <[email protected]<mailto:[email protected]>>; Yang, > > Qiming > > <[email protected]<mailto:[email protected]>>; Gregory Etelson > > <[email protected]<mailto:[email protected]>> > > Cc: [email protected]<mailto:[email protected]>; Tan, Jianfeng > > <[email protected]<mailto:[email protected]>> > > Subject: Re: [dpdk-dev] vf init issue with patch igb_uio: issue FLR during > > open > > and release of device file > > > > > > > > -----Original Message----- > > From: dev <[email protected]<mailto:[email protected]>> on behalf of > > Ferruh Yigit > > <[email protected]<mailto:[email protected]>> > > Date: Wednesday, September 13, 2017 at 10:06 AM > > To: "Hu, Xuekun" <[email protected]<mailto:[email protected]>>, > > "Thotton, Shijith" > > <[email protected]<mailto:[email protected]>>, "Yang, > > Qiming" <[email protected]<mailto:[email protected]>>, > > Gregory Etelson <[email protected]<mailto:[email protected]>> > > Cc: "[email protected]<mailto:[email protected]>" > > <[email protected]<mailto:[email protected]>>, "Tan, Jianfeng" > > <[email protected]<mailto:[email protected]>> > > 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:[email protected]] On Behalf Of Ferruh Yigit > > >> Sent: Wednesday, September 13, 2017 7:04 PM > > >> To: Shijith Thotton > > >> <[email protected]<mailto:[email protected]>>; > > >> Yang, > > >>Qiming <[email protected]<mailto:[email protected]>>; Gregory > > >>Etelson <[email protected]<mailto:[email protected]>> > > >> Cc: [email protected]<mailto:[email protected]>; Tan, Jianfeng > > >> <[email protected]<mailto:[email protected]>> > > >> 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 > > >>>> <[email protected]<mailto:[email protected]>> > > >>>> 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 > > >>>> <[email protected]<mailto:[email protected]>> > > >>>> Reviewed-by: Jianfeng Tan > > >>>> <[email protected]<mailto:[email protected]>> > > >>>> Acked-by: Ferruh Yigit > > >>>> <[email protected]<mailto:[email protected]>> > > >>>> Acked-by: Gregory Etelson <[email protected]<mailto:[email protected]>> > > >>>> > > >>>> > > >>>> > > >>>> 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? > > >> > >
