network: firewalld: add policies for routed networks

Signed-off-by: Eric Garver <eric@garver.life>
Reviewed-by: Laine Stump <laine@redhat.com>

libvirt.spec.in

@@ -1915,6 +1915,9 @@ exit 0
 %if %{with_firewalld_zone}
 %{_prefix}/lib/firewalld/zones/libvirt.xml
 %{_prefix}/lib/firewalld/zones/libvirt-routed.xml
+%{_prefix}/lib/firewalld/policies/libvirt-routed-in.xml
+%{_prefix}/lib/firewalld/policies/libvirt-routed-out.xml
+%{_prefix}/lib/firewalld/policies/libvirt-to-host.xml
 %endif
 
 %files daemon-driver-nodedev

src/network/libvirt-routed-in.policy

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<policy target="ACCEPT">
+  <short>libvirt-routed-in</short>
+
+  <description>
+    This policy is used to allow routed traffic to the virtual machines.
+  </description>
+
+  <ingress-zone name="ANY" />
+  <egress-zone name="libvirt-routed" />
+</policy>

src/network/libvirt-routed-out.policy

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<policy target="ACCEPT">
+  <short>libvirt-routed-out</short>
+
+  <description>
+    This policy is used to allow routed virtual machine traffic to the rest of
+    the network.
+  </description>
+
+  <ingress-zone name="libvirt-routed" />
+  <egress-zone name="ANY" />
+</policy>

src/network/libvirt-to-host.policy

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<policy target="REJECT">
+  <short>libvirt-to-host</short>
+
+  <description>
+    This policy is used to filter traffic from virtual machines to the
+    host.
+  </description>
+
+  <ingress-zone name="libvirt-routed" />
+  <egress-zone name="HOST" />
+
+  <protocol value='icmp'/>
+  <protocol value='ipv6-icmp'/>
+  <service name='dhcp'/>
+  <service name='dhcpv6'/>
+  <service name='dns'/>
+  <service name='ssh'/>
+  <service name='tftp'/>
+</policy>

src/network/meson.build

@@ -106,5 +106,20 @@ if conf.has('WITH_NETWORK')
       install_dir: prefix / 'lib' / 'firewalld' / 'zones',
       rename: [ 'libvirt-routed.xml' ],
     )
+    install_data(
+      'libvirt-to-host.policy',
+      install_dir: prefix / 'lib' / 'firewalld' / 'policies',
+      rename: [ 'libvirt-to-host.xml' ],
+    )
+    install_data(
+      'libvirt-routed-out.policy',
+      install_dir: prefix / 'lib' / 'firewalld' / 'policies',
+      rename: [ 'libvirt-routed-out.xml' ],
+    )
+    install_data(
+      'libvirt-routed-in.policy',
+      install_dir: prefix / 'lib' / 'firewalld' / 'policies',
+      rename: [ 'libvirt-routed-in.xml' ],
+    )
   endif
 endif