1 files changed, 106 insertions, 0 deletions
diff --git a/test/template_bd.py b/test/template_bd.py
new file mode 100644
index 00000000000..473c42282b9
--- /dev/null
+++ b/test/template_bd.py
@@ -0,0 +1,106 @@
+#!/usr/bin/env python
+
+from abc import abstractmethod
+
+from scapy.layers.l2 import Ether, Raw
+from scapy.layers.inet import IP, UDP
+
+
+class BridgeDomain(object):
+    def __init__(self):
+        ## Ethernet frame which is send to pg0 interface and is forwarded to pg1
+        self.payload_0_1 = (
+            Ether(src='00:00:00:00:00:01', dst='00:00:00:00:00:02') /
+            IP(src='1.2.3.4', dst='4.3.2.1') /
+            UDP(sport=10000, dport=20000) /
+            Raw('\xa5' * 100))
+
+        ## Ethernet frame which is send to pg1 interface and is forwarded to pg0
+        self.payload_1_0 = (
+            Ether(src='00:00:00:00:00:02', dst='00:00:00:00:00:01') /
+            IP(src='4.3.2.1', dst='1.2.3.4') /
+            UDP(sport=20000, dport=10000) /
+            Raw('\xa5' * 100))
+
+    ## Test case must implement this method, so template known how to send
+    #  encapsulated frame.
+    @abstractmethod
+    def encapsulate(self, pkt):
+        pass
+
+    ## Test case must implement this method, so template known how to get
+    #  original payload.
+    @abstractmethod
+    def decapsulate(self, pkt):
+        pass
+
+    ## Test case must implement this method, so template known how if the
+    #  received frame is corectly encapsulated.
+    @abstractmethod
+    def check_encapsulation(self, pkt):
+        pass
+
+    ## On pg0 interface are encapsulated frames, on pg1 are testing frames
+    #  without encapsulation
+    def test_decap(self):
+        ## Prepare Ethernet frame that will be send encapsulated.
+        pkt_to_send = self.encapsulate(self.payload_0_1)
+
+        ## Add packet to list of packets.
+        self.pg_add_stream(0, [pkt_to_send, ])
+
+        ## Enable Packet Capture on both ports.
+        self.pg_enable_capture([0, 1])
+
+        ## Start all streams
+        self.pg_start()
+
+        ## Pick first received frame and check if is same as non-encapsulated
+        #  frame.
+        out = self.pg_get_capture(1)
+        self.assertEqual(len(out), 1,
+                         'Invalid number of packets on '
+                         'output: {}'.format(len(out)))
+        pkt = out[0]
+
+        # TODO: add error messages
+        self.assertEqual(pkt[Ether].src, self.payload_0_1[Ether].src)
+        self.assertEqual(pkt[Ether].dst, self.payload_0_1[Ether].dst)
+        self.assertEqual(pkt[IP].src, self.payload_0_1[IP].src)
+        self.assertEqual(pkt[IP].dst, self.payload_0_1[IP].dst)
+        self.assertEqual(pkt[UDP].sport, self.payload_0_1[UDP].sport)
+        self.assertEqual(pkt[UDP].dport, self.payload_0_1[UDP].dport)
+        self.assertEqual(pkt[Raw], self.payload_0_1[Raw])
+
+    ## Send non-encapsulated Ethernet frame from pg1 interface and expect
+    #  encapsulated frame on pg0. On pg0 interface are encapsulated frames,
+    #  on pg1 are testing frames without encapsulation.
+    def test_encap(self):
+        ## Create packet generator stream.
+        self.pg_add_stream(1, [self.payload_1_0])
+
+        ## Enable Packet Capture on both ports.
+        self.pg_enable_capture([0, 1])
+
+        ## Start all streams.
+        self.pg_start()
+
+        ## Pick first received frame and check if is corectly encapsulated.
+        out = self.pg_get_capture(0)
+        self.assertEqual(len(out), 1,
+                         'Invalid number of packets on '
+                         'output: {}'.format(len(out)))
+        rcvd = out[0]
+        self.check_encapsulation(rcvd)
+
+        ## Get original frame from received packet and check if is same as
+        #  sended frame.
+        rcvd_payload = self.decapsulate(rcvd)
+        # TODO: add error messages
+        self.assertEqual(rcvd_payload[Ether].src, self.payload_1_0[Ether].src)
+        self.assertEqual(rcvd_payload[Ether].dst, self.payload_1_0[Ether].dst)
+        self.assertEqual(rcvd_payload[IP].src, self.payload_1_0[IP].src)
+        self.assertEqual(rcvd_payload[IP].dst, self.payload_1_0[IP].dst)
+        self.assertEqual(rcvd_payload[UDP].sport, self.payload_1_0[UDP].sport)
+        self.assertEqual(rcvd_payload[UDP].dport, self.payload_1_0[UDP].dport)
+        self.assertEqual(rcvd_payload[Raw], self.payload_1_0[Raw])