7 from framework import VppTestCase, VppTestRunner
8 from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint
10 from scapy.packet import Raw
11 from scapy.layers.l2 import Ether, Dot1Q, ARP
12 from scapy.layers.inet import IP, UDP
15 class TestIPv4(VppTestCase):
16 """ IPv4 Test Case """
20 super(TestIPv4, cls).setUpClass()
23 super(TestIPv4, self).setUp()
25 # create 3 pg interfaces
26 self.create_pg_interfaces(range(3))
28 # create 2 subinterfaces for pg1 and pg2
29 self.sub_interfaces = [
30 VppDot1QSubint(self, self.pg1, 100),
31 VppDot1ADSubint(self, self.pg2, 200, 300, 400)]
33 # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc.
35 self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if]
36 self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if]
37 self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if]
40 self.pg_if_packet_sizes = [64, 512, 1518, 9018]
41 self.sub_if_packet_sizes = [64, 512, 1518 + 4, 9018 + 4]
43 self.interfaces = list(self.pg_interfaces)
44 self.interfaces.extend(self.sub_interfaces)
46 # setup all interfaces
47 for i in self.interfaces:
52 # config 2M FIB enries
53 self.config_fib_entries(200)
56 super(TestIPv4, self).tearDown()
58 info(self.vapi.cli("show ip arp"))
59 # info(self.vapi.cli("show ip fib")) # many entries
61 def config_fib_entries(self, count):
62 n_int = len(self.interfaces)
65 dest_addr = socket.inet_pton(socket.AF_INET, "10.0.0.1")
67 for i in self.interfaces:
68 next_hop_address = i.local_ip4n
69 for j in range(count / n_int):
70 self.vapi.ip_add_del_route(
71 dest_addr, dest_addr_len, next_hop_address)
73 if counter / count * 100 > percent:
74 info("Configure %d FIB entries .. %d%% done" %
78 def create_stream(self, src_if, packet_sizes):
80 for i in range(0, 257):
81 dst_if = self.flows[src_if][i % 2]
82 info = self.create_packet_info(
83 src_if.sw_if_index, dst_if.sw_if_index)
84 payload = self.info_to_payload(info)
85 p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
86 IP(src=src_if.remote_ip4, dst=dst_if.remote_ip4) /
87 UDP(sport=1234, dport=1234) /
90 if isinstance(src_if, VppSubInterface):
91 p = src_if.add_dot1_layer(p)
92 size = packet_sizes[(i // 2) % len(packet_sizes)]
93 self.extend_packet(p, size)
97 def verify_capture(self, dst_if, capture):
98 info("Verifying capture on interface %s" % dst_if.name)
100 for i in self.interfaces:
101 last_info[i.sw_if_index] = None
103 dst_sw_if_index = dst_if.sw_if_index
104 if hasattr(dst_if, 'parent'):
106 for packet in capture:
108 # Check VLAN tags and Ethernet header
109 packet = dst_if.remove_dot1_layer(packet)
110 self.assertTrue(Dot1Q not in packet)
114 payload_info = self.payload_to_info(str(packet[Raw]))
115 packet_index = payload_info.index
116 self.assertEqual(payload_info.dst, dst_sw_if_index)
117 debug("Got packet on port %s: src=%u (id=%u)" %
118 (dst_if.name, payload_info.src, packet_index))
119 next_info = self.get_next_packet_info_for_interface2(
120 payload_info.src, dst_sw_if_index,
121 last_info[payload_info.src])
122 last_info[payload_info.src] = next_info
123 self.assertTrue(next_info is not None)
124 self.assertEqual(packet_index, next_info.index)
125 saved_packet = next_info.data
126 # Check standard fields
127 self.assertEqual(ip.src, saved_packet[IP].src)
128 self.assertEqual(ip.dst, saved_packet[IP].dst)
129 self.assertEqual(udp.sport, saved_packet[UDP].sport)
130 self.assertEqual(udp.dport, saved_packet[UDP].dport)
132 error("Unexpected or invalid packet:")
135 for i in self.interfaces:
136 remaining_packet = self.get_next_packet_info_for_interface2(
137 i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
139 remaining_packet is None,
140 "Interface %s: Packet expected from interface %s didn't arrive" %
141 (dst_if.name, i.name))
144 """ IPv4 FIB test """
146 pkts = self.create_stream(self.pg0, self.pg_if_packet_sizes)
147 self.pg0.add_stream(pkts)
149 for i in self.sub_interfaces:
150 pkts = self.create_stream(i, self.sub_if_packet_sizes)
151 i.parent.add_stream(pkts)
153 self.pg_enable_capture(self.pg_interfaces)
156 pkts = self.pg0.get_capture()
157 self.verify_capture(self.pg0, pkts)
159 for i in self.sub_interfaces:
160 pkts = i.parent.get_capture()
161 self.verify_capture(i, pkts)
164 if __name__ == '__main__':
165 unittest.main(testRunner=VppTestRunner)