Issue with rte_eth_dev_start
Igor de Paula
igordptx at gmail.com
Fri Apr 21 19:42:02 CEST 2023
Custom pc with of the shelf HW.
Intel i350-t4 NIC for example.
On Fri, Apr 21, 2023, 18:39 Verghis Koshi <vkoshi at gmail.com> wrote:
> Hi Igor,
> Just curious, what's your setup? Server or laptop?
>
> Verghis
>
> On Fri, Apr 21, 2023 at 5:37 AM Igor de Paula <igordptx at gmail.com> wrote:
>
>> From what I can tell, dpdk calles the function vfio_disable_msix in
>> the stop and start function. The reason it does not happen in start up is
>> that I don't call stop before.
>> Calling stop and then start calls the function twice. Which maybe
>> shouldn't happen... Is it a bug?
>>
>> On Thu, Apr 20, 2023 at 12:33 PM Igor de Paula <igordptx at gmail.com>
>> wrote:
>>
>>> Hi,
>>> I am having trouble with restarting a HW port allocated to DPDK.
>>> I am running the DPDK version: 21.08.0 and Ubuntu 20.04.3 LTS.
>>> The driver is : net_e100igb
>>> After I start the port with no issues I try to call rte_eth_dev_stop to
>>> stop it.
>>> When I am ready I call rte_eth_dev_start to start it again an I get the
>>> following message:
>>> EAL: Error disabling MSI-X interrupts for fd 46.
>>> I am not sure what this error is coming from and what it causes.
>>> I found little information online. If someone could explain, I would
>>> really appreciate it.
>>> This is a copy print on setup with no issues:
>>> 2023-04-20 11:09:51.703542: Driver: net_e1000_igb
>>> 2023-04-20 11:09:51.703546: Bus Id: 0000:01:00.0
>>> 2023-04-20 11:09:51.703551: rx offload cap: 280e (92e0f)
>>> 2023-04-20 11:09:51.703555: tx offload cap: 8002 (803f)
>>> 2023-04-20 11:09:51.703559: NUMA Socket: 0
>>> 2023-04-20 11:09:51.703563: MAC Address: b4:96:91:63:62:40
>>> 2023-04-20 11:09:51.703568: Max Rx Queue: 8
>>> 2023-04-20 11:09:51.703572: Max Tx Queue: 8
>>> 2023-04-20 11:09:51.703577: Max Rx Descriptors: 4096
>>> 2023-04-20 11:09:51.703581: Max Tx Descriptors: 4096
>>> 2023-04-20 11:09:51.703585: Max Rx Packet Length: 16383
>>> 2023-04-20 11:09:51.703589: Available Link Speeds: 10Mb/s 100Mb/s
>>> 1Gb/s
>>> 2023-04-20 11:09:51.703608: Fixed Link Speed: Auto
>>> 2023-04-20 11:09:51.703616: Fixed Duplex: Auto
>>> 2023-04-20 11:09:51.703623: MTU Set to: 16383
>>> 2023-04-20 11:09:51.703632: Actual Rx Descriptors: 4096
>>> 2023-04-20 11:09:51.703636: Actual Tx Descriptors: 4096
>>> 2023-04-20 11:09:51.703695: Set up 1 send queues
>>> 2023-04-20 11:09:51.703700: Actual MTU: 16383
>>> 2023-04-20 11:09:51.703704: Actual Linkspeed: 0
>>> 2023-04-20 11:09:51.703708: Actual duplex: 0
>>> 2023-04-20 11:09:51.703713: Successfully set port interrupt event
>>> 2023-04-20 11:09:51.818085: Flow control turned off for Port 0
>>> 2023-04-20 11:09:51.844179: Port 0 up and running
>>> 2023-04-20 11:09:51.844303: Event type: LSC interrupt
>>> 2023-04-20 11:09:51.844382: Port 0 Link Down
>>>
>>> And after I stop and start:
>>> 2023-04-20 11:11:00.492428: Driver: net_e1000_igb
>>> 2023-04-20 11:11:00.492476: Bus Id: 0000:01:00.0
>>> 2023-04-20 11:11:00.492526: rx offload cap: 280e (92e0f)
>>> 2023-04-20 11:11:00.492576: tx offload cap: 8002 (803f)
>>> 2023-04-20 11:11:00.492624: NUMA Socket: 0
>>> 2023-04-20 11:11:00.492672: MAC Address: b4:96:91:63:62:40
>>> 2023-04-20 11:11:00.492721: Max Rx Queue: 8
>>> 2023-04-20 11:11:00.492770: Max Tx Queue: 8
>>> 2023-04-20 11:11:00.492813: Max Rx Descriptors: 4096
>>> 2023-04-20 11:11:00.492851: Max Tx Descriptors: 4096
>>> 2023-04-20 11:11:00.492889: Max Rx Packet Length: 16383
>>> 2023-04-20 11:11:00.492958: Available Link Speeds: 10Mb/s 100Mb/s
>>> 1Gb/s
>>> 2023-04-20 11:11:00.493207: Fixed Link Speed: Auto
>>> 2023-04-20 11:11:00.493301: Fixed Duplex: Full
>>> 2023-04-20 11:11:00.493822: MTU Set to: 16383
>>> 2023-04-20 11:11:00.493889: Actual Rx Descriptors: 4096
>>> 2023-04-20 11:11:00.493936: Actual Tx Descriptors: 4096
>>> 2023-04-20 11:11:00.494190: Actual MTU: 16383
>>> 2023-04-20 11:11:00.494229: Actual Linkspeed: 0
>>> 2023-04-20 11:11:00.494266: Actual duplex: 1
>>> 2023-04-20 11:11:00.494305: Successfully set port interrupt event
>>> *EAL: Error disabling MSI-X interrupts for fd 46*
>>> 2023-04-20 11:11:00.603181: Flow control turned off for Port 0
>>> 2023-04-20 11:11:00.629151: Port 0 up and running
>>> 2023-04-20 11:11:00.629222: Event type: LSC interrupt
>>> 2023-04-20 11:11:00.629273: Port 0 Link Down
>>>
>>>
>>> Thanks,
>>> Igor
>>>
>>>
>>>
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