Hi Igor, Just curious, what's your setup? Server or laptop? Verghis On Fri, Apr 21, 2023 at 5:37 AM Igor de Paula 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 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 >> >> >>