[ovs-discuss] [OVS v2.4.0] - VXLAN UDP port configuration is not notified to L2 driver/interface.

Manish Chopra manish.chopra at qlogic.com
Wed Sep 9 10:03:34 UTC 2015


Detailed Description :

I am trying to test VXLAN with OVS bridge with L2 driver. With OVS release version [2.4.0] package VXLAN udp port configuration is not notified to L2 driver
via ndo_add_vxlan_port interface. Due to this hardware is not able to do offload of features [like checksum etc.], Hence TCP/IP traffic with encapsulated offload enabled on NIC is not working.

How to reproduce:

With L2 driver loaded - NIC interface eth0 [IP:] on the system

1)      Installed OVS v 2.4.0 on the system

2)      Created OVS bridge "ovs-vx" using "ovs-vsctl add-br ovs-vx"

3)      ovs-vsctl add-port ovs-vx vxlan0 -- set interface vxlan0 type=vxlan options:remote_ip= options:key=100 options:dst_port=4789

-        Here with this step VXLAN UDP port 4789 is not being notified to L2 interface eth0.

4)      Configured IP on "ovs-vx" internal port [IP:]

5)      Tried to ping remote "ovs-vx" internal port - ping [Works fine]

6)      Try running TCP/IP traffic between "ovs-vx" internal ports - it doesn't work with encapsulated offload enabled on NIC(eth0) interface.

Expected result:
VXLAN UDP port configuration must be notified to L2 interface [to eth0].

Addition Note:

With OVS [v2.3.2] VXLAN udp port configuration was getting notified to L2 driver and there TCP/IP  traffic with encapsulated offload worked fine.

Please let me know if any more information is required.



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