Hello all. I'm having an issue with SR-IOV on 82599 NIC in lab env. Basically what I have is Ubuntu 12.04 with a set of vanilla kernels and Open vSwitch.
A simplified scheme for ovs setup: br-mgmt -> [vlan 102]br-eth0 -> eth0 -> fabric When VFs are disabled, connectivity works fine. However when at least one VF is enabled, traffic just doesn't go any further than br-eth0. Oddly enough, it acts this way only if VLAN is configured on br-eth0 via OVS. When I try to configure VLAN with ip link, it works just fine. It's not an udev issue because re-adding eth0 to br-eth0 doesn't help. I've tried different OVS and ixgbe/ixgbevf versions against different kernel versions and ruled out issues with OVS and ixgbe. This could be a kernel bug. Kernel versions I've tried: 3.11.0 works fine 3.12.24 has this issue 3.14.23 has this issue 3.15.10 has this issue 3.16.7 and later kernels: the situation is opposite: when VFs are disabled, there is no connectivity on PF; as soon as at leas 1 VF is enabled, connectivity appears. OVS versions: 2.3.0 for user space 2.3.0 (and kernel native where 2.3.0 is not supported - starting with 3.15.x) for kernel space ixgbe: latest from Intel website (3.22.3) ixgbevf: latest from Intel website (2.15.3) Any suggestions? Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
