Hello, We recently upgraded a XXV710 nic on a Dell R740 server (running RHEL 7.7) to firmware version 7.00.
# ethtool -i enp59s0f0 driver: i40e version: 2.8.10-k firmware-version: 7.00 0x80004cf8 1.2154.0 expansion-rom-version: bus-info: 0000:3b:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes Following this upgrade, using the nic with dpdk only works once. Restarting testpmd (dpdk 18.11.2) ends up with all ports reporting that link is down, and indeed, the other side of the cable reports that there is no light. I tried with the 19.11-rc1 tag, same behavior. To restore connectivity, the workaround is to unbind the device from vfio-pci, bind it again to the i40e kernel driver, and bind it back to vfio-pci. We noticed a question on Intel forum: https://forums.intel.com/s/question/0D50P00004OjvP2SAJ/xxv7102-how-to-rollbackdowngrade-firmware-to-version-601-from-version-700 But no public solution in this forum. We are trying to downgrade the firmware to version 6.8x or 6.0x but so far, we did not manage to do this downgrade. Any help appreciated. Thanks. -- David Marchand
