Configuring Ovs Machine - Chelsio Communications Terminator Series Installation And User Manual

Chapter XXI. OVS Kernel Datapath Offload
3.1.

Configuring OVS Machine

The following example explains the method to configure an OVS machine:
Host A
i. Please install Unified Wire with Hash Filter (T5/T6) configuration tuning option.
ii. Update the filterMode and filterMask in the the hash config file in /lib/firmware/cxgb4/. Use
t6-config.txt for T6 adapters and t5-config.txt for T5 adapters:
filterMode = fragmentation,ethertype,protocol,tos,port
filterMask = fragmentation,ethertype,protocol,tos,port
filterMask tuples can be subset of or equal to filterMode tuples.
Note
iii. Load NIC (cxgb4) driver with hash-filter support:
[root@host~]# modprobe cxgb4 use_ddr_filters=1
iv. Bring up the Chelsio interfaces in promiscous mode:
[root@host~]# ifconfig eth2 promisc up
[root@host~]# ifconfig eth3 promisc up
v. Load Open vSwitch module:
[root@host~]# modprobe openvswitch
Chelsio Unified Wire for Linux
OVS Switch
eth2
eth3
Host B
*eth2 and eth3 are Chelsio interfaces.
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