<div dir="ltr"><div>Hi Igor,</div><div> Just curious, what's your setup? Server or laptop?</div><div><br></div><div>Verghis<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Apr 21, 2023 at 5:37 AM Igor de Paula <<a href="mailto:igordptx@gmail.com">igordptx@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">From what I can tell, dpdk calles the function <span style="color:rgb(130,80,223);font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px;white-space:pre-wrap">vfio_disable_msix </span> in the stop and start function. The reason it does not happen in start up is that I don't call stop before.<br>Calling stop and then start calls the function twice. Which maybe shouldn't happen... Is it a bug? <span style="color:rgb(130,80,223);font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;font-size:12px;white-space:pre-wrap"> <br></span></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Apr 20, 2023 at 12:33 PM Igor de Paula <<a href="mailto:igordptx@gmail.com" target="_blank">igordptx@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi,<br>I am having trouble with restarting a HW port allocated to DPDK.<br>I am running the DPDK version: 21.08.0 and Ubuntu 20.04.3 LTS.<br>The driver is : net_e100igb<br>After I start the port with no issues I try to call rte_eth_dev_stop to stop it.<br>When I am ready I call rte_eth_dev_start to start it again an I get the following message:<br>EAL: Error disabling MSI-X interrupts for fd 46.<br>I am not sure what this error is coming from and what it causes.<br>I found little information online. If someone could explain, I would really appreciate it.<br>This is a copy print on setup with no issues:<br>2023-04-20 11:09:51.703542: Driver: net_e1000_igb<br>2023-04-20 11:09:51.703546: Bus Id: 0000:01:00.0<br>2023-04-20 11:09:51.703551: rx offload cap: 280e (92e0f)<br>2023-04-20 11:09:51.703555: tx offload cap: 8002 (803f)<br>2023-04-20 11:09:51.703559: NUMA Socket: 0<br>2023-04-20 11:09:51.703563: MAC Address: b4:96:91:63:62:40<br>2023-04-20 11:09:51.703568: Max Rx Queue: 8<br>2023-04-20 11:09:51.703572: Max Tx Queue: 8<br>2023-04-20 11:09:51.703577: Max Rx Descriptors: 4096<br>2023-04-20 11:09:51.703581: Max Tx Descriptors: 4096<br>2023-04-20 11:09:51.703585: Max Rx Packet Length: 16383<br>2023-04-20 11:09:51.703589: Available Link Speeds: 10Mb/s 100Mb/s 1Gb/s<br>2023-04-20 11:09:51.703608: Fixed Link Speed: Auto<br>2023-04-20 11:09:51.703616: Fixed Duplex: Auto<br>2023-04-20 11:09:51.703623: MTU Set to: 16383<br>2023-04-20 11:09:51.703632: Actual Rx Descriptors: 4096<br>2023-04-20 11:09:51.703636: Actual Tx Descriptors: 4096<br>2023-04-20 11:09:51.703695: Set up 1 send queues<br>2023-04-20 11:09:51.703700: Actual MTU: 16383<br>2023-04-20 11:09:51.703704: Actual Linkspeed: 0<br>2023-04-20 11:09:51.703708: Actual duplex: 0<br>2023-04-20 11:09:51.703713: Successfully set port interrupt event<br>2023-04-20 11:09:51.818085: Flow control turned off for Port 0<br>2023-04-20 11:09:51.844179: Port 0 up and running<br>2023-04-20 11:09:51.844303: Event type: LSC interrupt<br>2023-04-20 11:09:51.844382: Port 0 Link Down<br><br>And after I stop and start:<br>2023-04-20 11:11:00.492428: Driver: net_e1000_igb<br>2023-04-20 11:11:00.492476: Bus Id: 0000:01:00.0<br>2023-04-20 11:11:00.492526: rx offload cap: 280e (92e0f)<br>2023-04-20 11:11:00.492576: tx offload cap: 8002 (803f)<br>2023-04-20 11:11:00.492624: NUMA Socket: 0<br>2023-04-20 11:11:00.492672: MAC Address: b4:96:91:63:62:40<br>2023-04-20 11:11:00.492721: Max Rx Queue: 8<br>2023-04-20 11:11:00.492770: Max Tx Queue: 8<br>2023-04-20 11:11:00.492813: Max Rx Descriptors: 4096<br>2023-04-20 11:11:00.492851: Max Tx Descriptors: 4096<br>2023-04-20 11:11:00.492889: Max Rx Packet Length: 16383<br>2023-04-20 11:11:00.492958: Available Link Speeds: 10Mb/s 100Mb/s 1Gb/s<br>2023-04-20 11:11:00.493207: Fixed Link Speed: Auto<br>2023-04-20 11:11:00.493301: Fixed Duplex: Full<br>2023-04-20 11:11:00.493822: MTU Set to: 16383<br>2023-04-20 11:11:00.493889: Actual Rx Descriptors: 4096<br>2023-04-20 11:11:00.493936: Actual Tx Descriptors: 4096<br>2023-04-20 11:11:00.494190: Actual MTU: 16383<br>2023-04-20 11:11:00.494229: Actual Linkspeed: 0<br>2023-04-20 11:11:00.494266: Actual duplex: 1<br>2023-04-20 11:11:00.494305: Successfully set port interrupt event<br><b>EAL: Error disabling MSI-X interrupts for fd 46</b><br>2023-04-20 11:11:00.603181: Flow control turned off for Port 0<br>2023-04-20 11:11:00.629151: Port 0 up and running<br>2023-04-20 11:11:00.629222: Event type: LSC interrupt<br>2023-04-20 11:11:00.629273: Port 0 Link Down<br><br><br>Thanks,<br>Igor<br><br><br></div> </blockquote></div> </blockquote></div>