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