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<p class="MsoNormal">Hi Matt,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We are doing some ground work for <a href="https://storyboard.openstack.org/#!/story/2002944">
https://storyboard.openstack.org/#!/story/2002944</a> regarding the StarlingX OVS-DPDK firewall driver enhancement. To better understand the requirement, we may need your help on the following question.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There are 3 security group implementations in neutron OVS-DPDK agent.<o:p></o:p></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoNormal" style="mso-list:l0 level1 lfo1">Iptables based security group<br>
The OVS agent and Compute service use a Linux bridge between each instance (VM) and the OVS integration bridge br-int to implement security groups. This implementation is stateful but<br>
cause scalability and performance problems.<o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1">Openflow based security group<br>
This implementation is stateless and based in OpenFlow 'learn action', which uses a firewall driver in networking-ovs-dpdk project.<br>
<a href="https://github.com/openstack/networking-ovs-dpdk/blob/master/networking_ovs_dpdk/agent/ovs_dpdk_firewall.py">https://github.com/openstack/networking-ovs-dpdk/blob/master/networking_ovs_dpdk/agent/ovs_dpdk_firewall.py</a><o:p></o:p></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1">Openflow + conntrack based security group<br>
This implementation is stateful, which uses a native firewall driver.<br>
<a href="https://docs.openstack.org/newton/networking-guide/config-ovsfwdriver.html">https://docs.openstack.org/newton/networking-guide/config-ovsfwdriver.html</a><br>
<a href="http://docs.openvswitch.org/en/latest/tutorials/ovs-conntrack/">http://docs.openvswitch.org/en/latest/tutorials/ovs-conntrack/</a><o:p></o:p></li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The requirement from the enhancement description is that we're going to adopt implementation option 2 for StarlingX OVS-DPDK security group.<br>
Compared with option 3 which is stateful and uses a native firewall driver, what is our consideration on taking option 2 as our target?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please kindly see the attached doc for further details. Just let me know if anything unclear. Thanks a lot!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">BR,<o:p></o:p></p>
<p class="MsoNormal">Kailun<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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