Merge pull request #16929 from ssahani/network-bare-udp

network: introduce Bare UDP Tunnelling

test/fuzz/fuzz-netdev-parser/directives.netdev

@@ -216,3 +216,6 @@ Activate=
 [Xfrm]
 Independent=
 InterfaceId=
+[BareUDP]
+DestinationPort=
+EtherType=

test/test-network/conf/25-bareudp.netdev

@@ -0,0 +1,7 @@
+[NetDev]
+Kind=bareudp
+Name=bareudp99
+
+[BareUDP]
+DestinationPort=1000
+EtherType=ipv4

test/test-network/conf/netdev-link-local-addressing-yes.network

@@ -1,4 +1,5 @@
 [Match]
+Name=bareudp99
 Name=ipvlan99
 Name=ipvtap99
 Name=macvlan99

test/test-network/systemd-networkd-tests.py

@@ -732,6 +732,7 @@ class NetworkdNetDevTests(unittest.TestCase, Utilities):
 
     links = [
         '6rdtun99',
+        'bareudp99',
         'bond99',
         'bridge99',
         'dropin-test',
@@ -806,6 +807,7 @@ class NetworkdNetDevTests(unittest.TestCase, Utilities):
         '21-vlan.netdev',
         '21-vlan.network',
         '25-6rd-tunnel.netdev',
+        '25-bareudp.netdev',
         '25-bond.netdev',
         '25-bond-balanced-tlb.netdev',
         '25-bridge.netdev',
@@ -952,6 +954,18 @@ class NetworkdNetDevTests(unittest.TestCase, Utilities):
         self.wait_operstate('bridge99', '(off|no-carrier)', setup_state='configuring')
         self.wait_operstate('test1', 'degraded')
 
+    @expectedFailureIfModuleIsNotAvailable('bareudp')
+    def test_bareudp(self):
+        copy_unit_to_networkd_unit_path('25-bareudp.netdev', 'netdev-link-local-addressing-yes.network')
+        start_networkd()
+
+        self.wait_online(['bareudp99:degraded'])
+
+        output = check_output('ip -d link show bareudp99')
+        print(output)
+        self.assertRegex(output, 'dstport 1000 ')
+        self.assertRegex(output, 'ethertype ip ')
+
     def test_bridge(self):
         copy_unit_to_networkd_unit_path('25-bridge.netdev', '25-bridge-configure-without-carrier.network')
         start_networkd()