test: new test infrastructure

Change-Id: I73ca19c431743f6b39669c583d9222a6559346ef
Signed-off-by: Jan Gelety <jgelety@cisco.com>
Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
Signed-off-by: Stefan Kobza <skobza@cisco.com>
Signed-off-by: Matej Klotton <mklotton@cisco.com>
Signed-off-by: Maciek Konstantynowicz <mkonstan@cisco.com>
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 261 insertions, 0 deletions

diff --git a/test/test_ip.py b/test/test_ip.py
new file mode 100644
index 00000000000..3a2c90115fe
--- /dev/null
+++ b/test/test_ip.py
@@ -0,0 +1,261 @@
+#!/usr/bin/env python
+
+import logging
+logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
+
+import unittest
+from framework import VppTestCase, VppTestRunner
+from util import Util
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, ARP, Dot1Q
+from scapy.layers.inet import IP, UDP
+
+
+class TestIPv4(Util, VppTestCase):
+    """ IPv4 Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPv4, cls).setUpClass()
+
+        try:
+            cls.create_interfaces_and_subinterfaces()
+
+            # configure IPv4 on hardware interfaces
+            cls.config_ip4(cls.interfaces)
+
+            cls.config_ip4_on_software_interfaces(cls.interfaces)
+
+            # resolve ARP using hardware interfaces
+            cls.resolve_arp(cls.interfaces)
+
+            # let VPP know MAC addresses of peer (sub)interfaces
+            cls.resolve_arp_on_software_interfaces(cls.interfaces)
+
+            # config 2M FIB enries
+            cls.config_fib_entries(2000000)
+
+        except Exception as e:
+            super(TestIPv4, cls).tearDownClass()
+            raise
+
+    def tearDown(self):
+        self.cli(2, "show int")
+        self.cli(2, "show trace")
+        self.cli(2, "show hardware")
+        self.cli(2, "show ip arp")
+        # self.cli(2, "show ip fib")  # 2M entries
+        self.cli(2, "show error")
+        self.cli(2, "show run")
+
+    @classmethod
+    def create_vlan_subif(cls, pg_index, vlan):
+        cls.api("create_vlan_subif pg%u vlan %u" % (pg_index, vlan))
+
+    @classmethod
+    def create_dot1ad_subif(cls, pg_index, sub_id, outer_vlan_id, inner_vlan_id):
+        cls.api("create_subif pg%u sub_id %u outer_vlan_id %u inner_vlan_id %u dot1ad"
+                 % (pg_index, sub_id, outer_vlan_id, inner_vlan_id))
+
+    class SoftInt(object):
+        pass
+
+    class HardInt(SoftInt):
+        pass
+
+    class Subint(SoftInt):
+        def __init__(self, sub_id):
+            self.sub_id = sub_id
+
+    class Dot1QSubint(Subint):
+        def __init__(self, sub_id, vlan=None):
+            if vlan is None:
+                vlan = sub_id
+            super(TestIPv4.Dot1QSubint, self).__init__(sub_id)
+            self.vlan = vlan
+
+    class Dot1ADSubint(Subint):
+        def __init__(self, sub_id, outer_vlan, inner_vlan):
+            super(TestIPv4.Dot1ADSubint, self).__init__(sub_id)
+            self.outer_vlan = outer_vlan
+            self.inner_vlan = inner_vlan
+
+    @classmethod
+    def create_interfaces_and_subinterfaces(cls):
+        cls.interfaces = range(3)
+
+        cls.create_interfaces(cls.interfaces)
+
+        # Make vpp_api_test see interfaces created using debug CLI (in function create_interfaces)
+        cls.api("sw_interface_dump")
+
+        cls.INT_DETAILS = dict()
+
+        cls.INT_DETAILS[0] = cls.HardInt()
+
+        cls.INT_DETAILS[1] = cls.Dot1QSubint(100)
+        cls.create_vlan_subif(1, cls.INT_DETAILS[1].vlan)
+
+        # FIXME: Wrong packet format/wrong layer on output of interface 2
+        #self.INT_DETAILS[2] = self.Dot1ADSubint(10, 200, 300)
+        #self.create_dot1ad_subif(2, self.INT_DETAILS[2].sub_id, self.INT_DETAILS[2].outer_vlan, self.INT_DETAILS[2].inner_vlan)
+
+        # Use dor1q for now
+        cls.INT_DETAILS[2] = cls.Dot1QSubint(200)
+        cls.create_vlan_subif(2, cls.INT_DETAILS[2].vlan)
+
+        for i in cls.interfaces:
+            det = cls.INT_DETAILS[i]
+            if isinstance(det, cls.Subint):
+                cls.api("sw_interface_set_flags pg%u.%u admin-up" % (i, det.sub_id))
+
+    # IP adresses on subinterfaces
+    MY_SOFT_IP4S = {}
+    VPP_SOFT_IP4S = {}
+
+    @classmethod
+    def config_ip4_on_software_interfaces(cls, args):
+        for i in args:
+            cls.MY_SOFT_IP4S[i] = "172.17.%u.2" % i
+            cls.VPP_SOFT_IP4S[i] = "172.17.%u.1" % i
+            if isinstance(cls.INT_DETAILS[i], cls.Subint):
+                interface = "pg%u.%u" % (i, cls.INT_DETAILS[i].sub_id)
+            else:
+                interface = "pg%u" % i
+            cls.api("sw_interface_add_del_address %s %s/24" % (interface, cls.VPP_SOFT_IP4S[i]))
+            cls.log("My subinterface IPv4 address is %s" % (cls.MY_SOFT_IP4S[i]))
+
+    # let VPP know MAC addresses of peer (sub)interfaces
+    @classmethod
+    def resolve_arp_on_software_interfaces(cls, args):
+        for i in args:
+            ip = cls.VPP_SOFT_IP4S[i]
+            cls.log("Sending ARP request for %s on port %u" % (ip, i))
+            packet = (Ether(dst="ff:ff:ff:ff:ff:ff", src=cls.MY_MACS[i]) /
+                      ARP(op=ARP.who_has, pdst=ip, psrc=cls.MY_SOFT_IP4S[i], hwsrc=cls.MY_MACS[i]))
+
+            cls.add_dot1_layers(i, packet)
+
+            cls.pg_add_stream(i, packet)
+            cls.pg_enable_capture([i])
+
+            cls.cli(2, "trace add pg-input 1")
+            cls.pg_start()
+
+            # We don't need to read output
+
+    @classmethod
+    def config_fib_entries(cls, count):
+        n_int = len(cls.interfaces)
+        for i in cls.interfaces:
+            cls.api("ip_add_del_route 10.0.0.1/32 via %s count %u" % (cls.VPP_SOFT_IP4S[i], count / n_int))
+
+    @classmethod
+    def add_dot1_layers(cls, i, packet):
+        assert(type(packet) is Ether)
+        payload = packet.payload
+        det = cls.INT_DETAILS[i]
+        if isinstance(det, cls.Dot1QSubint):
+            packet.remove_payload()
+            packet.add_payload(Dot1Q(vlan=det.sub_id) / payload)
+        elif isinstance(det, cls.Dot1ADSubint):
+            packet.remove_payload()
+            packet.add_payload(Dot1Q(vlan=det.outer_vlan) / Dot1Q(vlan=det.inner_vlan) / payload)
+            packet.type = 0x88A8
+
+    def remove_dot1_layers(self, i, packet):
+        self.assertEqual(type(packet), Ether)
+        payload = packet.payload
+        det = self.INT_DETAILS[i]
+        if isinstance(det, self.Dot1QSubint):
+            self.assertEqual(type(payload), Dot1Q)
+            self.assertEqual(payload.vlan, self.INT_DETAILS[i].vlan)
+            payload = payload.payload
+        elif isinstance(det, self.Dot1ADSubint):  # TODO: change 88A8 type
+            self.assertEqual(type(payload), Dot1Q)
+            self.assertEqual(payload.vlan, self.INT_DETAILS[i].outer_vlan)
+            payload = payload.payload
+            self.assertEqual(type(payload), Dot1Q)
+            self.assertEqual(payload.vlan, self.INT_DETAILS[i].inner_vlan)
+            payload = payload.payload
+        packet.remove_payload()
+        packet.add_payload(payload)
+
+    def create_stream(self, pg_id):
+        pg_targets = [None] * 3
+        pg_targets[0] = [1, 2]
+        pg_targets[1] = [0, 2]
+        pg_targets[2] = [0, 1]
+        pkts = []
+        for i in range(0, 257):
+            target_pg_id = pg_targets[pg_id][i % 2]
+            info = self.create_packet_info(pg_id, target_pg_id)
+            payload = self.info_to_payload(info)
+            p = (Ether(dst=self.VPP_MACS[pg_id], src=self.MY_MACS[pg_id]) /
+                 IP(src=self.MY_SOFT_IP4S[pg_id], dst=self.MY_SOFT_IP4S[target_pg_id]) /
+                 UDP(sport=1234, dport=1234) /
+                 Raw(payload))
+            info.data = p.copy()
+            self.add_dot1_layers(pg_id, p)
+            if not isinstance(self.INT_DETAILS[pg_id], self.Subint):
+                packet_sizes = [64, 512, 1518, 9018]
+            else:
+                packet_sizes = [64, 512, 1518+4, 9018+4]
+            size = packet_sizes[(i / 2) % len(packet_sizes)]
+            self.extend_packet(p, size)
+            pkts.append(p)
+        return pkts
+
+    def verify_capture(self, o, capture):
+        last_info = {}
+        for i in self.interfaces:
+            last_info[i] = None
+        for packet in capture:
+            self.remove_dot1_layers(o, packet)  # Check VLAN tags and Ethernet header
+            self.assertTrue(Dot1Q not in packet)
+            try:
+                ip = packet[IP]
+                udp = packet[UDP]
+                payload_info = self.payload_to_info(str(packet[Raw]))
+                packet_index = payload_info.index
+                src_pg = payload_info.src
+                dst_pg = payload_info.dst
+                self.assertEqual(dst_pg, o)
+                self.log("Got packet on port %u: src=%u (id=%u)" % (o, src_pg, packet_index), 2)
+                next_info = self.get_next_packet_info_for_interface2(src_pg, dst_pg, last_info[src_pg])
+                last_info[src_pg] = next_info
+                self.assertTrue(next_info is not None)
+                self.assertEqual(packet_index, next_info.index)
+                saved_packet = next_info.data
+                # Check standard fields
+                self.assertEqual(ip.src, saved_packet[IP].src)
+                self.assertEqual(ip.dst, saved_packet[IP].dst)
+                self.assertEqual(udp.sport, saved_packet[UDP].sport)
+                self.assertEqual(udp.dport, saved_packet[UDP].dport)
+            except:
+                self.log("Unexpected or invalid packet:")
+                packet.show()
+                raise
+        for i in self.interfaces:
+            remaining_packet = self.get_next_packet_info_for_interface2(i, o, last_info[i])
+            self.assertTrue(remaining_packet is None, "Port %u: Packet expected from source %u didn't arrive" % (o, i))
+
+    def test_fib(self):
+        """ IPv4 FIB test """
+
+        for i in self.interfaces:
+            pkts = self.create_stream(i)
+            self.pg_add_stream(i, pkts)
+
+        self.pg_enable_capture(self.interfaces)
+        self.pg_start()
+
+        for i in self.interfaces:
+            out = self.pg_get_capture(i)
+            self.log("Verifying capture %u" % i)
+            self.verify_capture(i, out)
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner = VppTestRunner)