test: port: Add a VLAN test

Iterate over a bunch of VLAN IDs to make sure that the switch accepts
forwarding packets which are tagged.

dsatest/tests/port/vlan.py

@@ -0,0 +1,50 @@
+
+import unittest
+
+from dsatest.bench import bench
+from dsatest.tests.helpers import up_and_wait, get_address
+
+@unittest.skipIf(not bench.links, "Empty link list")
+class TestPingVlan(unittest.TestCase):
+
+    VID_START = 0
+    VID_END = 10
+
+    def setUp(self):
+        links = bench.links
+
+        for i, link in enumerate(links):
+            up_and_wait(link)
+            link.host_if.flush_addresses()
+            link.target_if.flush_addresses()
+            for vid in range(TestPingVlan.VID_START, TestPingVlan.VID_END):
+                link.host_if.add_vlan(vid)
+                link.target_if.add_vlan(vid)
+
+
+    def tearDown(self):
+        links = bench.links
+
+        for i, link in enumerate(links):
+            for vid in range(TestPingVlan.VID_START, TestPingVlan.VID_END):
+                link.target_if.del_vlan(vid)
+                link.host_if.del_vlan(vid)
+            link.host_if.down()
+            link.target_if.down()
+
+
+    def test_port_ping_vlan_all(self):
+        for i, link in enumerate(bench.links):
+            for vid in range(TestPingVlan.VID_START, TestPingVlan.VID_END):
+                host_vlan = link.host_if.vlan_interfaces[vid]
+                target_vlan = link.target_if.vlan_interfaces[vid]
+                host_vlan.add_address(get_address(vid, "host", 24))
+                host_vlan.up()
+                target_vlan.add_address(get_address(vid, "target", 24))
+                target_vlan.up()
+                addr = get_address(vid, "target")
+                host_vlan.ping(addr, count=1, deadline=10)
+                host_vlan.flush_addresses()
+                target_vlan.flush_addresses()
+                host_vlan.down()
+                target_vlan.down()