3 files changed, 174 insertions, 0 deletions
diff --git a/roles/vm/host/network/tasks/main.yml b/roles/vm/host/network/tasks/main.yml
new file mode 100644
index 00000000..cd415d1e
--- /dev/null
+++ b/roles/vm/host/network/tasks/main.yml
@@ -0,0 +1,42 @@
+---
+- name: configure bonds and vlans
+  when: "'bonds' in network or 'vlans' in network"
+  block:
+  - name: install ifenslave package
+    when: "'bonds' in network"
+    apt:
+      name: ifenslave
+      state: present
+
+  - name: install vlan package
+    when: "'vlans' in network"
+    apt:
+      name: vlan
+      state: present
+
+  - name: create network interfaces
+    template:
+      src: interfaces.j2
+      dest: /etc/network/interfaces
+
+- name: create network bridges
+  when: "'bridges' in vm_host.network"
+  block:
+  - name: generate bridge interface config
+    loop: "{{ vm_host.network.bridges | default({}) | dict2items }}"
+    loop_control:
+      label: "{{ item.key }}"
+    template:
+      src: bridge-interfaces.j2
+      dest: "/etc/network/interfaces.d/br-{{ item.key }}"
+    register: vmhost_bridge_config
+
+  ## We don't try to be to clever here: aka don't call ifdown before ifup because
+  ## if there are VMs running they would end up with a broken network
+  - name: bring up bridge interfaces
+    loop: "{{ vmhost_bridge_config.results }}"
+    loop_control:
+      label: "br-{{ item.item.key }}"
+    when: item is changed
+    command: "/sbin/ifup br-{{ item.item.key }}"
+    failed_when: false
diff --git a/roles/vm/host/network/templates/bridge-interfaces.j2 b/roles/vm/host/network/templates/bridge-interfaces.j2
new file mode 100644
index 00000000..05144430
--- /dev/null
+++ b/roles/vm/host/network/templates/bridge-interfaces.j2
@@ -0,0 +1,53 @@
+{% set bridge_name = 'br-'+item.key %}
+{% set bridge = item.value %}
+{% set interface = (network.interfaces | selectattr('name', 'eq', bridge_name) | first | default({})) %}
+auto {{ bridge_name }}
+{% if 'address' in interface %}
+iface {{ bridge_name }} inet static
+  address {{ interface.address | ipaddr('address') }}
+  netmask {{ interface.address | ipaddr('netmask') }}
+{%   if 'gateway' in interface %}
+  gateway {{ interface.gateway }}
+{%   endif %}
+{% else %}
+iface {{ bridge_name }} inet manual
+{% endif %}
+{% if 'interfaces' in bridge and (bridge.interfaces | length) > 0 %}
+  bridge_ports {{ bridge.interfaces | join(' ') }}
+{% else %}
+  bridge_ports none
+{% endif %}
+  bridge_stp off
+  bridge_waitport 0
+  bridge_fd 0
+  up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/accept_ra
+  up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/autoconf
+  up modprobe br_netfilter
+  up /sbin/sysctl net.bridge.bridge-nf-call-iptables=0
+  up /sbin/sysctl net.bridge.bridge-nf-call-ip6tables=0
+  up /sbin/sysctl net.bridge.bridge-nf-call-arptables=0
+{% if 'address' in interface and 'prefix' in bridge %}
+{%   if 'nat' in bridge and bridge.nat %}
+  up echo 1 > /proc/sys/net/ipv4/conf/$IFACE/forwarding
+  up echo 1 > /proc/sys/net/ipv4/conf/{{ ansible_default_ipv4.interface }}/forwarding
+  up /sbin/iptables -t nat -A POSTROUTING -o {{ ansible_default_ipv4.interface }} -s {{ bridge.prefix }} -j SNAT --to {{ ansible_default_ipv4.address }}
+{%   endif %}
+{%   if 'overlay' in bridge %}
+{%     for dest, offset in (bridge.overlay.offsets | dictsort(by='value')) %}
+  up /bin/ip route add {{ (bridge.overlay.prefix | ipaddr(offset)).split('/')[0] }}/32 via {{ (bridge.prefix | ipaddr(bridge.offsets[dest])).split('/')[0] }}  # {{ dest }}
+{%     endfor %}
+  up /bin/ip route add unreachable {{ bridge.overlay.prefix }}
+  down /sbin/ip route del {{ bridge.overlay.prefix }}
+{%   endif %}
+{%   if 'nat' in bridge and bridge.nat %}
+  down /sbin/iptables -t nat -D POSTROUTING -o {{ ansible_default_ipv4.interface }} -s {{ bridge.prefix }} -j SNAT --to {{ ansible_default_ipv4.address }}
+{%   endif %}
+{% endif %}
+{% if 'address6' in interface %}
+
+iface {{ bridge_name }} inet6 static
+  address {{ interface.address6 }}
+{%   if 'gateway6' in interface %}
+  gateway {{ interface.gateway6 }}
+{%   endif %}
+{% endif %}
diff --git a/roles/vm/host/network/templates/interfaces.j2 b/roles/vm/host/network/templates/interfaces.j2
new file mode 100644
index 00000000..fe57a024
--- /dev/null
+++ b/roles/vm/host/network/templates/interfaces.j2
@@ -0,0 +1,79 @@
+# This file describes the network interfaces available on your system
+# and how to activate them. For more information, see interfaces(5).
+
+# The loopback network interface
+auto lo
+iface lo inet loopback
+
+
+## pyhiscal interfaces
+
+{% for interface in network.bonds | default([]) | map(attribute='slaves') | flatten | union(network.vlans | default({}) | list) | difference(network.bonds | default([]) | map(attribute='name') | list) | sort | unique %}
+auto {{ interface }}
+iface {{ interface }} inet manual
+  pre-up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/accept_ra
+  pre-up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/autoconf
+
+{% endfor %}
+
+{% for bond in network.bonds | default([]) %}
+## Bond: {{ bond.name }}
+
+{%   set tmp = network.interfaces | selectattr('name', 'eq', bond.name) | list %}
+auto {{ bond.name }}
+iface {{ bond.name }} inet {{ ((tmp | length) == 0) | ternary('manual', 'static') }}
+  bond-mode {{ bond.mode }}
+  bond-slaves {{ bond.slaves | sort | join(' ') }}
+{%   for option in (bond.options | default({}) | list | sort) %}
+  bond-{{ option }} {{ bond.options[option] }}
+{%   endfor %}
+  up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/accept_ra
+  up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/autoconf
+{%   if (tmp | length) > 0 %}
+{%     set interface = tmp | first %}
+  address {{ interface.address | ipaddr('address') }}
+  netmask {{ interface.address | ipaddr('netmask') }}
+{%     if 'gateway' in interface %}
+  gateway {{ interface.gateway }}
+{%     endif %}
+{%     for route in interface.static_routes | default([]) %}
+  up /bin/ip route add {{ route.destination }} via {{ route.gateway }}
+{%     endfor %}
+{%     for route in interface.static_routes | default([]) | reverse %}
+  down /bin/ip route del {{ route.destination }} via {{ route.gateway }}
+{%     endfor %}
+{%     if 'address6' in interface %}
+
+iface {{ interface.name }} inet6 static
+  address {{ interface.address6 }}
+{%       if 'gateway6' in interface %}
+  gateway {{ interface.gateway6 }}
+{%       endif %}
+{%       for route in interface.static_routes6 | default([]) %}
+  up /bin/ip -6 route add {{ route.destination }} via {{ route.gateway }}
+{%       endfor %}
+{%       for route in interface.static_routes6 | default([])  | reverse %}
+  down /bin/ip -6 route del {{ route.destination }} via {{ route.gateway }}
+{%       endfor %}
+{%     endif %}
+{%   endif %}
+
+
+{% endfor %}
+{% for parent in network.vlans | default({}) | list | sort %}
+## vlan interfaces @ {{ parent }}
+
+{%   for vlan in network.vlans[parent] %}
+auto {{ parent }}.{{ vlan }}
+iface {{ parent }}.{{ vlan }} inet manual
+  up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/accept_ra
+  up echo 0 > /proc/sys/net/ipv6/conf/$IFACE/autoconf
+{# TODO: add interface config like above if (network.interfaces | selectattr('name', 'eq', 'parent+'.'+vlan') | list) > 0 ... #}
+
+{%   endfor %}
+
+{% endfor %}
+
+## source bridge configs
+
+source /etc/network/interfaces.d/*