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-rw-r--r--test/template_bd.py106
1 files changed, 106 insertions, 0 deletions
diff --git a/test/template_bd.py b/test/template_bd.py
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+++ b/test/template_bd.py
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+#!/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])