Re: [dpdk-users] OS hang when running helloworld example with two I210 NICs

[Michal Michalowski <michalm@openet.com>]

Hi David,

Here is the output of lscpi after NICs after the are configured for DPDK:

michal@michal-HP-Z200-Workstation:~$ sudo lspci -vs 18:00
18:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)
        Subsystem: Intel Corporation Ethernet Server Adapter I210-T1
        Physical Slot: 4
        Flags: fast devsel, IRQ 16
        Memory at f3300000 (32-bit, non-prefetchable) [size=1M]
        Memory at f3400000 (32-bit, non-prefetchable) [size=16K]
        [virtual] Expansion ROM at f8000000 [disabled] [size=1M]
        Capabilities: [40] Power Management version 3
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
        Capabilities: [70] MSI-X: Enable- Count=5 Masked-
        Capabilities: [a0] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Device Serial Number a0-36-9f-ff-ff-d5-07-3b
        Capabilities: [1a0] Transaction Processing Hints
        Kernel driver in use: uio_pci_generic

michal@michal-HP-Z200-Workstation:~$ sudo lspci -vs 24:00
24:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)
        Subsystem: Intel Corporation Ethernet Server Adapter I210-T1
        Physical Slot: 1
        Flags: fast devsel, IRQ 16
        Memory at f3100000 (32-bit, non-prefetchable) [size=1M]
        Memory at f3200000 (32-bit, non-prefetchable) [size=16K]
        [virtual] Expansion ROM at f8200000 [disabled] [size=1M]
        Capabilities: [40] Power Management version 3
        Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
        Capabilities: [70] MSI-X: Enable- Count=5 Masked-
        Capabilities: [a0] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Device Serial Number a0-36-9f-ff-ff-d5-06-12
        Capabilities: [1a0] Transaction Processing Hints
        Kernel driver in use: uio_pci_generic


Cheers,
Michal
________________________________________
From: Hunt, David [david.hunt@intel.com]
Sent: 21 March 2017 13:19
To: Michal Michalowski; users@dpdk.org
Subject: Re: [dpdk-users] OS hang when running helloworld example with two I210 NICs

On 15/3/2017 4:55 PM, Michal Michalowski wrote:
> HI,
>
> I have problem running helloworld example. The OS hangs and the only way
> forward is to poweroff the box.
>
> DPDK version 16.11.1
> OS: Ubuntu 16.04 and 14.04
> NICs:
> 18:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
> Connection (rev 03)
> 24:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network
> Connection (rev 03)
>
> The problem only appears when I have two NICs present. If I bind at
> least one of them to uio_pci_generic and run helloworld the OS hangs.
> If I try to use igb_uio the system hangs when binding the device.
>
> I have narrowed it down a bit. The OS hangs when
> e1000_get_media_type_82575 is executed. Line:   ctrl_ext =
> E1000_READ_REG(hw, E1000_CTRL_EXT);
> That line is reading memory mapped from resource0 of the device.
>
> I have reproduced behaviour just by binding the device to
> uio_pci_generic and putting it in "bus master" mode and the reading from
> it's resour0.
>
> The behaviour is not reproducible with just one NIC in place. Also if
> the devices use igb driver and are in "bus master" I can read from
> resource0.
>
> Has anyone encountered similar problem?
>
> Cheers,
> Michal

Michal,

    Could you post up the output of 'lspci -v' for the two cards?
('lspci -v -s 18:00' and 'lspci -v -s 24:00' should do it).
I'm interested in the "Memory at" output.

I'm using a board here with some i211's with Ubuntu 16.04 and DPDK
16.11.1. All OK so far with igb_uio and helloworld.

Regards,
Dave.



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