I think the IX710 device doesn't support the Link Change Interrupt. I have enabled the debug traces and I could see following in the messages
Jan 10 02:07:53 <hostname> packet-forwarding[1518]: rte_eth_dev_configure: driver net_i40e_vf does not support lsc Also I could verify that the virtual function bound to kernel (i.e. i40evf ) is able to detect the link failure in the PF. Tushar On Wed, Jan 10, 2018 at 12:18 PM, Tushar Mulkar <tusharmul...@gmail.com> wrote: > Hi All, > > I am using "Ethernet Controller X710 for 10GbE SFP+" SRIOV NIC card on > the host with 8 VFs. Out of these VFs two VFs are associated with a VM, one > VF is bound to Linux kernel driver i40evf and another is bound to dpdk pmd > i.e. igb_uio. > when there is a link fault on the hardware nic, the fault is not > detected for the VF that is bound to dpdk. Instead it is detecting medium > change from 10GBase-SR to 100BASE-TXFD. Is there any configuration, that > will allow me to detect the link state on hardware NIC in the VM ? > > Basically I want to get the Link change notification on the dpdk > application in VM. > > I tried to register for the link state change interrupt but the > "rte_eth_dev_configure" fails with error code -22 > > I believe link-state auto actually means replicate PF link-state to VF > Current Config : > > > [root at ironman <https://dpdk.org/ml/listinfo/dev> tmp]# ip link show p2p2 > 34: p2p2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP > mode DEFAULT qlen 1000 > link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff > vf 0 MAC xx:xx:xx:xx:xx:01, spoof checking on, link-state auto, trust off > vf 1 MAC xx:xx:xx:xx:xx:02, spoof checking on, link-state auto, trust off > vf 2 MAC xx:xx:xx:xx:xx:03, spoof checking on, link-state auto, trust off > vf 3 MAC 00:00:00:00:00:00, spoof checking on, link-state auto, trust off > vf 4 MAC 00:00:00:00:00:00, spoof checking on, link-state auto, trust off > vf 5 MAC 00:00:00:00:00:00, spoof checking on, link-state auto, trust off > vf 6 MAC 00:00:00:00:00:00, spoof checking on, link-state auto, trust off > vf 7 MAC 00:00:00:00:00:00, spoof checking on, link-state auto, trust off > > > Regards, > Tushar > >