Merge pull request #67 from gprocunier/tunable-network-driver

Tunable network driver

Author: markgoddard

README.md

@@ -141,6 +141,8 @@ Role Variables
         - `trust_guest_rx_filters`: Whether to trust guest receive filters.
           This gets mapped to the `trustGuestRxFilters` attribute of VM
           interfaces.  Default is `libvirt_vm_trust_guest_rx_filters`.
+        - `model`: The name of the interface model. Eg. `e1000` or `ne2k_pci`, if undefined
+           it defaults to `virtio`.
     - `console_log_enabled`: if `true`, log console output to a file at the
       path specified by `console_log_path`, **instead of** to a PTY. If
       `false`, direct terminal output to a PTY at serial port 0. Default is

templates/vm.xml.j2

@@ -79,7 +79,11 @@
       {% endif %}
       {# if the network configuration is invalid this can still appear in the xml #}
       {# (say you enter 'bond' instead of 'bridge' in your variables) #}
+      {% if interface.model is defined %}
+      <model type='{{ interface.model }}'/>
+      {% else %}
       <model type='virtio'/>
+      {% endif %}
     </interface>
 {% endfor %}
 {% if console_log_enabled | bool %}