$ sudo apt-get update
$ sudo apt-get install openvswitch-datapath-source 

openvswitch-datapath-source is installed in your system.

Make ensure the openvswitch-datapath-source package were installed using the commands given below,

$ sudo dpkg-query -l | grep openvswitch-datapath-source *

You will get with openvswitch-datapath-source package name, version, architecture and description in a table

openvswitch-datapath-source package basic information: