Re: [dpdk-users] Hard Crash with X710 and Pktgen

[James Bensley <jwbensley@gmail.com>]

Hi guys,

Thank you all for your responses!


I initially thought this was unlikely to be a Pktgen specific issue
however I thought it worth mentioning I am using Pktgen just in case.

On 14 November 2017 at 04:49, Muhammad Zain-ul-Abideen
<zain2294@gmail.com> wrote:
> where is -p argument

Do you mean upper case "-P"? Lower case “p” isn’t an option in “Pktgen
–-help” output.

On 13 November 2017 at 19:35, James Bensley <jwbensley@gmail.com> wrote:
> $ sudo ./app/x86_64-native-linuxapp-gcc/pktgen -l 2-6 -n 1 -w 09:00.0 -w 09:00.1 -v -- -P -m [3-4].0 [5-6].1


On 13 November 2017 at 21:49, Wiles, Keith <keith.wiles@intel.com> wrote:
> For the hard lockup problem try using testpmd application and see if that the same problem if not then it will be next week before I can look at.
>
> Let me know if testpmd works or not.

Thanks for taking the time to reply whilst traveling Keith!

Sadly I’m getting the same behaviour with testpmd:

$ ./dpdk-devbind.py --status-dev net

Network devices using DPDK-compatible driver
============================================
0000:09:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=igb_uio unused=
0000:09:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=igb_uio unused=

Network devices using kernel driver
===================================
0000:02:00.0 'I350 Gigabit Network Connection 1521' if=eno1 drv=igb
unused=igb_uio *Active*
0000:02:00.1 'I350 Gigabit Network Connection 1521' if=eno2 drv=igb
unused=igb_uio
0000:06:00.0 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=ens3f0
drv=tg3 unused=igb_uio
0000:06:00.1 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=ens3f1
drv=tg3 unused=igb_uio
0000:06:00.2 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=ens3f2
drv=tg3 unused=igb_uio *Active*
0000:06:00.3 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=ens3f3
drv=tg3 unused=igb_uio

$ sudo ./testpmd -l 0-3 -n 4 -- -i --portmask=0x1 --nb-cores=2
EAL: Detected 16 lcore(s)
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: PCI device 0000:02:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:02:00.1 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:09:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1572 net_i40e

<< HARD LOCK-UP >>


$ ./dpdk-devbind.py --status-dev net

Network devices using DPDK-compatible driver
============================================
0000:09:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572'
drv=vfio-pci unused=igb_uio
0000:09:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572'
drv=vfio-pci unused=igb_uio

Network devices using kernel driver
===================================
0000:02:00.0 'I350 Gigabit Network Connection 1521' if=eno1 drv=igb
unused=igb_uio,vfio-pci *Active*
0000:02:00.1 'I350 Gigabit Network Connection 1521' if=eno2 drv=igb
unused=igb_uio,vfio-pci
0000:06:00.0 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=ens3f0
drv=tg3 unused=igb_uio,vfio-pci
0000:06:00.1 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=ens3f1
drv=tg3 unused=igb_uio,vfio-pci
0000:06:00.2 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=ens3f2
drv=tg3 unused=igb_uio,vfio-pci *Active*
0000:06:00.3 'NetXtreme BCM5719 Gigabit Ethernet PCIe 1657' if=ens3f3
drv=tg3 unused=igb_uio,vfio-pci

$ sudo ./testpmd -l 0-3 -n 4 -- -i --portmask=0x1 --nb-cores=2
EAL: Detected 16 lcore(s)
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL: PCI device 0000:02:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:02:00.1 on NUMA socket 0
EAL:   probe driver: 8086:1521 net_e1000_igb
EAL: PCI device 0000:09:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1572 net_i40e
EAL:   0000:09:00.0 failed to select IOMMU type
EAL: Requested device 0000:09:00.0 cannot be used
EAL: PCI device 0000:09:00.1 on NUMA socket 0
EAL:   probe driver: 8086:1572 net_i40e
EAL:   0000:09:00.1 failed to select IOMMU type
EAL: Requested device 0000:09:00.1 cannot be used
EAL: No probed ethernet devices
Interactive-mode selected
USER1: create a new mbuf pool <mbuf_pool_socket_0>: n=171456,
size=2176, socket=0
Done


On 14 November 2017 at 06:29, Rosen, Rami <rami.rosen@intel.com> wrote:
> Second, I think the root cause for not finding the ports is around this message ("failed to select IOMMU type") in:
> ...
>> EAL:   probe driver: 8086:1572 net_i40e
>> EAL:   0000:09:00.0 failed to select IOMMU type
>> EAL: Requested device 0000:09:00.0 cannot be used
>> EAL: PCI device 0000:09:00.1 on NUMA socket 0
>> EAL:   probe driver: 8086:1572 net_i40e
>> EAL:   0000:09:00.1 failed to select IOMMU type
>> EAL: Requested device 0000:09:00.1 cannot be used
> ...
>
> What does " find /sys/kernel/iommu_groups/ -type l"
> give ?
>
> Could it be that 0000:09:00.0 and 0000:09:00.1 belongs to an IOMMU group in which there are other devices ?

To me (a layman) this looks correct, do you agree?

$ find /sys/kernel/iommu_groups/ -type l | grep 09
/sys/kernel/iommu_groups/36/devices/0000:09:00.0
/sys/kernel/iommu_groups/37/devices/0000:09:00.1

$ find /sys/kernel/iommu_groups/ -type l | grep -E "36|37"
/sys/kernel/iommu_groups/36/devices/0000:09:00.0
/sys/kernel/iommu_groups/37/devices/0000:09:00.1

Cheers,
James.