Hello, I am testing OVS 2.4.0 on Linux 3.19 kernel.
Not sure when it got changed, but VXLAN offload is no longer on by default in 3.19 - it used to be the case in 3.19. So, normally I have: ethtool -k eth4 | grep tnl tx-udp_tnl-segmentation: off [fixed] Configuring a VXLAN interface manually would trigger that option to turn on. Something like: ip link add vxlan0 type vxlan id 11 group 239.1.1.1 dev eth4 ip addr add 1.2.4.5/24 dev vxlan0 ip link set up vxlan0 Then we have: ethtool -k eth4 | grep tnl tx-udp_tnl-segmentation: on [requested off] I imagined that when OVS created the VXLAN tunneled ports, it should turn on VXLAN offload as well, but it's not happening. I check the openvswitch mod by lsmod and find: ovs-vsctl (Open vSwitch) 2.3.2: # lsmod | grep openv vxlan 38058 1 openvswitch gre 13841 1 openvswitch libcrc32c 12644 1 openvswitch ovs-vsctl (Open vSwitch) 2.4.0: # lsmod | grep openv openvswitch 110592 1 vport_vxlan libcrc32c 16384 1 openvswitch It shows that ovs 2.4.0 doesn’t load vxlan mode. Any ideas? Thanks.
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