tests: move test source to vpp/test

- Generate copyright year and version
  instead of using hard-coded data

Type: refactor

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e

1 files changed, 748 insertions, 0 deletions

diff --git a/test/test_wireguard.py b/test/test_wireguard.py
new file mode 100755
index 00000000000..edc305b1336
--- /dev/null
+++ b/test/test_wireguard.py
@@ -0,0 +1,748 @@
+#!/usr/bin/env python3
+""" Wg tests """
+
+import datetime
+import base64
+
+from hashlib import blake2s
+from scapy.packet import Packet
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, ARP
+from scapy.layers.inet import IP, UDP
+from scapy.contrib.wireguard import Wireguard, WireguardResponse, \
+    WireguardInitiation, WireguardTransport
+from cryptography.hazmat.primitives.asymmetric.x25519 import \
+    X25519PrivateKey, X25519PublicKey
+from cryptography.hazmat.primitives.serialization import Encoding, \
+    PrivateFormat, PublicFormat, NoEncryption
+from cryptography.hazmat.primitives.hashes import BLAKE2s, Hash
+from cryptography.hazmat.primitives.hmac import HMAC
+from cryptography.hazmat.backends import default_backend
+from noise.connection import NoiseConnection, Keypair
+
+from vpp_ipip_tun_interface import VppIpIpTunInterface
+from vpp_interface import VppInterface
+from vpp_object import VppObject
+from framework import VppTestCase
+from re import compile
+import unittest
+
+""" TestWg is a subclass of  VPPTestCase classes.
+
+Wg test.
+
+"""
+
+
+def private_key_bytes(k):
+    return k.private_bytes(Encoding.Raw,
+                           PrivateFormat.Raw,
+                           NoEncryption())
+
+
+def public_key_bytes(k):
+    return k.public_bytes(Encoding.Raw,
+                          PublicFormat.Raw)
+
+
+class VppWgInterface(VppInterface):
+    """
+    VPP WireGuard interface
+    """
+
+    def __init__(self, test, src, port):
+        super(VppWgInterface, self).__init__(test)
+
+        self.port = port
+        self.src = src
+        self.private_key = X25519PrivateKey.generate()
+        self.public_key = self.private_key.public_key()
+
+    def public_key_bytes(self):
+        return public_key_bytes(self.public_key)
+
+    def private_key_bytes(self):
+        return private_key_bytes(self.private_key)
+
+    def add_vpp_config(self):
+        r = self.test.vapi.wireguard_interface_create(interface={
+            'user_instance': 0xffffffff,
+            'port': self.port,
+            'src_ip': self.src,
+            'private_key': private_key_bytes(self.private_key),
+            'generate_key': False
+        })
+        self.set_sw_if_index(r.sw_if_index)
+        self.test.registry.register(self, self.test.logger)
+        return self
+
+    def remove_vpp_config(self):
+        self.test.vapi.wireguard_interface_delete(
+            sw_if_index=self._sw_if_index)
+
+    def query_vpp_config(self):
+        ts = self.test.vapi.wireguard_interface_dump(sw_if_index=0xffffffff)
+        for t in ts:
+            if t.interface.sw_if_index == self._sw_if_index and \
+               str(t.interface.src_ip) == self.src and \
+               t.interface.port == self.port and \
+               t.interface.private_key == private_key_bytes(self.private_key):
+                return True
+        return False
+
+    def __str__(self):
+        return self.object_id()
+
+    def object_id(self):
+        return "wireguard-%d" % self._sw_if_index
+
+
+def find_route(test, prefix, table_id=0):
+    routes = test.vapi.ip_route_dump(table_id, False)
+
+    for e in routes:
+        if table_id == e.route.table_id \
+           and str(e.route.prefix) == str(prefix):
+            return True
+    return False
+
+
+NOISE_HANDSHAKE_NAME = b"Noise_IKpsk2_25519_ChaChaPoly_BLAKE2s"
+NOISE_IDENTIFIER_NAME = b"WireGuard v1 zx2c4 Jason@zx2c4.com"
+
+
+class VppWgPeer(VppObject):
+
+    def __init__(self,
+                 test,
+                 itf,
+                 endpoint,
+                 port,
+                 allowed_ips,
+                 persistent_keepalive=15):
+        self._test = test
+        self.itf = itf
+        self.endpoint = endpoint
+        self.port = port
+        self.allowed_ips = allowed_ips
+        self.persistent_keepalive = persistent_keepalive
+
+        # remote peer's public
+        self.private_key = X25519PrivateKey.generate()
+        self.public_key = self.private_key.public_key()
+
+        self.noise = NoiseConnection.from_name(NOISE_HANDSHAKE_NAME)
+
+    def validate_routing(self):
+        for a in self.allowed_ips:
+            self._test.assertTrue(find_route(self._test, a))
+
+    def validate_no_routing(self):
+        for a in self.allowed_ips:
+            self._test.assertFalse(find_route(self._test, a))
+
+    def add_vpp_config(self):
+        rv = self._test.vapi.wireguard_peer_add(
+            peer={
+                'public_key': self.public_key_bytes(),
+                'port': self.port,
+                'endpoint': self.endpoint,
+                'n_allowed_ips': len(self.allowed_ips),
+                'allowed_ips': self.allowed_ips,
+                'sw_if_index': self.itf.sw_if_index,
+                'persistent_keepalive': self.persistent_keepalive})
+        self.index = rv.peer_index
+        self.receiver_index = self.index + 1
+        self._test.registry.register(self, self._test.logger)
+        self.validate_routing()
+        return self
+
+    def remove_vpp_config(self):
+        self._test.vapi.wireguard_peer_remove(peer_index=self.index)
+        self.validate_no_routing()
+
+    def object_id(self):
+        return ("wireguard-peer-%s" % self.index)
+
+    def public_key_bytes(self):
+        return public_key_bytes(self.public_key)
+
+    def query_vpp_config(self):
+        peers = self._test.vapi.wireguard_peers_dump()
+
+        for p in peers:
+            if p.peer.public_key == self.public_key_bytes() and \
+               p.peer.port == self.port and \
+               str(p.peer.endpoint) == self.endpoint and \
+               p.peer.sw_if_index == self.itf.sw_if_index and \
+               len(self.allowed_ips) == p.peer.n_allowed_ips:
+                self.allowed_ips.sort()
+                p.peer.allowed_ips.sort()
+
+                for (a1, a2) in zip(self.allowed_ips, p.peer.allowed_ips):
+                    if str(a1) != str(a2):
+                        return False
+                return True
+        return False
+
+    def set_responder(self):
+        self.noise.set_as_responder()
+
+    def mk_tunnel_header(self, tx_itf):
+        return (Ether(dst=tx_itf.local_mac, src=tx_itf.remote_mac) /
+                IP(src=self.endpoint, dst=self.itf.src) /
+                UDP(sport=self.port, dport=self.itf.port))
+
+    def noise_init(self, public_key=None):
+        self.noise.set_prologue(NOISE_IDENTIFIER_NAME)
+        self.noise.set_psks(psk=bytes(bytearray(32)))
+
+        if not public_key:
+            public_key = self.itf.public_key
+
+        # local/this private
+        self.noise.set_keypair_from_private_bytes(
+            Keypair.STATIC,
+            private_key_bytes(self.private_key))
+        # remote's public
+        self.noise.set_keypair_from_public_bytes(
+            Keypair.REMOTE_STATIC,
+            public_key_bytes(public_key))
+
+        self.noise.start_handshake()
+
+    def mk_handshake(self, tx_itf, public_key=None):
+        self.noise.set_as_initiator()
+        self.noise_init(public_key)
+
+        p = (Wireguard() / WireguardInitiation())
+
+        p[Wireguard].message_type = 1
+        p[Wireguard].reserved_zero = 0
+        p[WireguardInitiation].sender_index = self.receiver_index
+
+        # some random data for the message
+        #  lifted from the noise protocol's wireguard example
+        now = datetime.datetime.now()
+        tai = struct.pack('!qi', 4611686018427387914 + int(now.timestamp()),
+                          int(now.microsecond * 1e3))
+        b = self.noise.write_message(payload=tai)
+
+        # load noise into init message
+        p[WireguardInitiation].unencrypted_ephemeral = b[0:32]
+        p[WireguardInitiation].encrypted_static = b[32:80]
+        p[WireguardInitiation].encrypted_timestamp = b[80:108]
+
+        # generate the mac1 hash
+        mac_key = blake2s(b'mac1----' +
+                          self.itf.public_key_bytes()).digest()
+        p[WireguardInitiation].mac1 = blake2s(bytes(p)[0:116],
+                                              digest_size=16,
+                                              key=mac_key).digest()
+        p[WireguardInitiation].mac2 = bytearray(16)
+
+        p = (self.mk_tunnel_header(tx_itf) / p)
+
+        return p
+
+    def verify_header(self, p):
+        self._test.assertEqual(p[IP].src, self.itf.src)
+        self._test.assertEqual(p[IP].dst, self.endpoint)
+        self._test.assertEqual(p[UDP].sport, self.itf.port)
+        self._test.assertEqual(p[UDP].dport, self.port)
+        self._test.assert_packet_checksums_valid(p)
+
+    def consume_init(self, p, tx_itf):
+        self.noise.set_as_responder()
+        self.noise_init(self.itf.public_key)
+        self.verify_header(p)
+
+        init = Wireguard(p[Raw])
+
+        self._test.assertEqual(init[Wireguard].message_type, 1)
+        self._test.assertEqual(init[Wireguard].reserved_zero, 0)
+
+        self.sender = init[WireguardInitiation].sender_index
+
+        # validate the hash
+        mac_key = blake2s(b'mac1----' +
+                          public_key_bytes(self.public_key)).digest()
+        mac1 = blake2s(bytes(init)[0:-32],
+                       digest_size=16,
+                       key=mac_key).digest()
+        self._test.assertEqual(init[WireguardInitiation].mac1, mac1)
+
+        # this passes only unencrypted_ephemeral, encrypted_static,
+        # encrypted_timestamp fields of the init
+        payload = self.noise.read_message(bytes(init)[8:-32])
+
+        # build the response
+        b = self.noise.write_message()
+        mac_key = blake2s(b'mac1----' +
+                          public_key_bytes(self.itf.public_key)).digest()
+        resp = (Wireguard(message_type=2, reserved_zero=0) /
+                WireguardResponse(sender_index=self.receiver_index,
+                                  receiver_index=self.sender,
+                                  unencrypted_ephemeral=b[0:32],
+                                  encrypted_nothing=b[32:]))
+        mac1 = blake2s(bytes(resp)[:-32],
+                       digest_size=16,
+                       key=mac_key).digest()
+        resp[WireguardResponse].mac1 = mac1
+
+        resp = (self.mk_tunnel_header(tx_itf) / resp)
+        self._test.assertTrue(self.noise.handshake_finished)
+
+        return resp
+
+    def consume_response(self, p):
+        self.verify_header(p)
+
+        resp = Wireguard(p[Raw])
+
+        self._test.assertEqual(resp[Wireguard].message_type, 2)
+        self._test.assertEqual(resp[Wireguard].reserved_zero, 0)
+        self._test.assertEqual(resp[WireguardResponse].receiver_index,
+                               self.receiver_index)
+
+        self.sender = resp[Wireguard].sender_index
+
+        payload = self.noise.read_message(bytes(resp)[12:60])
+        self._test.assertEqual(payload, b'')
+        self._test.assertTrue(self.noise.handshake_finished)
+
+    def decrypt_transport(self, p):
+        self.verify_header(p)
+
+        p = Wireguard(p[Raw])
+        self._test.assertEqual(p[Wireguard].message_type, 4)
+        self._test.assertEqual(p[Wireguard].reserved_zero, 0)
+        self._test.assertEqual(p[WireguardTransport].receiver_index,
+                               self.receiver_index)
+
+        d = self.noise.decrypt(
+            p[WireguardTransport].encrypted_encapsulated_packet)
+        return d
+
+    def encrypt_transport(self, p):
+        return self.noise.encrypt(bytes(p))
+
+    def validate_encapped(self, rxs, tx):
+        for rx in rxs:
+            rx = IP(self.decrypt_transport(rx))
+
+            # chech the oringial packet is present
+            self._test.assertEqual(rx[IP].dst, tx[IP].dst)
+            self._test.assertEqual(rx[IP].ttl, tx[IP].ttl-1)
+
+
+class TestWg(VppTestCase):
+    """ Wireguard Test Case """
+
+    error_str = compile(r"Error")
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestWg, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(3))
+            for i in cls.pg_interfaces:
+                i.admin_up()
+                i.config_ip4()
+                i.resolve_arp()
+
+        except Exception:
+            super(TestWg, cls).tearDownClass()
+            raise
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestWg, cls).tearDownClass()
+
+    def test_wg_interface(self):
+        """ Simple interface creation """
+        port = 12312
+
+        # Create interface
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+
+        self.logger.info(self.vapi.cli("sh int"))
+
+        # delete interface
+        wg0.remove_vpp_config()
+
+    def test_handshake_hash(self):
+        """ test hashing an init message """
+        # a init packet generated by linux given the key below
+        h = "0100000098b9032b" \
+            "55cc4b39e73c3d24" \
+            "a2a1ab884b524a81" \
+            "1808bb86640fb70d" \
+            "e93154fec1879125" \
+            "ab012624a27f0b75" \
+            "c0a2582f438ddb5f" \
+            "8e768af40b4ab444" \
+            "02f9ff473e1b797e" \
+            "80d39d93c5480c82" \
+            "a3d4510f70396976" \
+            "586fb67300a5167b" \
+            "ae6ca3ff3dfd00eb" \
+            "59be198810f5aa03" \
+            "6abc243d2155ee4f" \
+            "2336483900aef801" \
+            "08752cd700000000" \
+            "0000000000000000" \
+            "00000000"
+
+        b = bytearray.fromhex(h)
+        tgt = Wireguard(b)
+
+        pubb = base64.b64decode("aRuHFTTxICIQNefp05oKWlJv3zgKxb8+WW7JJMh0jyM=")
+        pub = X25519PublicKey.from_public_bytes(pubb)
+
+        self.assertEqual(pubb, public_key_bytes(pub))
+
+        # strip the macs and build a new packet
+        init = b[0:-32]
+        mac_key = blake2s(b'mac1----' + public_key_bytes(pub)).digest()
+        init += blake2s(init,
+                        digest_size=16,
+                        key=mac_key).digest()
+        init += b'\x00' * 16
+
+        act = Wireguard(init)
+
+        self.assertEqual(tgt, act)
+
+    def test_wg_peer_resp(self):
+        """ Send handshake response """
+        wg_output_node_name = '/err/wg-output-tun/'
+        wg_input_node_name = '/err/wg-input/'
+
+        port = 12323
+
+        # Create interfaces
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+        wg0.admin_up()
+        wg0.config_ip4()
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        peer_1 = VppWgPeer(self,
+                           wg0,
+                           self.pg1.remote_ip4,
+                           port+1,
+                           ["10.11.2.0/24",
+                            "10.11.3.0/24"]).add_vpp_config()
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+
+        # wait for the peer to send a handshake
+        rx = self.pg1.get_capture(1, timeout=2)
+
+        # consume the handshake in the noise protocol and
+        # generate the response
+        resp = peer_1.consume_init(rx[0], self.pg1)
+
+        # send the response, get keepalive
+        rxs = self.send_and_expect(self.pg1, [resp], self.pg1)
+
+        for rx in rxs:
+            b = peer_1.decrypt_transport(rx)
+            self.assertEqual(0, len(b))
+
+        # send a packets that are routed into the tunnel
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+             UDP(sport=555, dport=556) /
+             Raw(b'\x00' * 80))
+
+        rxs = self.send_and_expect(self.pg0, p * 255, self.pg1)
+
+        peer_1.validate_encapped(rxs, p)
+
+        # send packets into the tunnel, expect to receive them on
+        # the other side
+        p = [(peer_1.mk_tunnel_header(self.pg1) /
+              Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(
+                  receiver_index=peer_1.sender,
+                  counter=ii,
+                  encrypted_encapsulated_packet=peer_1.encrypt_transport(
+                      (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+                       UDP(sport=222, dport=223) /
+                       Raw())))) for ii in range(255)]
+
+        rxs = self.send_and_expect(self.pg1, p, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+    def test_wg_peer_init(self):
+        """ Send handshake init """
+        wg_output_node_name = '/err/wg-output-tun/'
+        wg_input_node_name = '/err/wg-input/'
+
+        port = 12333
+
+        # Create interfaces
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+        wg0.admin_up()
+        wg0.config_ip4()
+
+        peer_1 = VppWgPeer(self,
+                           wg0,
+                           self.pg1.remote_ip4,
+                           port+1,
+                           ["10.11.2.0/24",
+                            "10.11.3.0/24"]).add_vpp_config()
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+
+        # route a packet into the wg interface
+        #  use the allowed-ip prefix
+        #  this is dropped because the peer is not initiated
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+             UDP(sport=555, dport=556) /
+             Raw())
+        self.send_and_assert_no_replies(self.pg0, [p])
+
+        kp_error = wg_output_node_name + "Keypair error"
+        self.assertEqual(1, self.statistics.get_err_counter(kp_error))
+
+        # send a handsake from the peer with an invalid MAC
+        p = peer_1.mk_handshake(self.pg1)
+        p[WireguardInitiation].mac1 = b'foobar'
+        self.send_and_assert_no_replies(self.pg1, [p])
+        self.assertEqual(1, self.statistics.get_err_counter(
+            wg_input_node_name + "Invalid MAC handshake"))
+
+        # send a handsake from the peer but signed by the wrong key.
+        p = peer_1.mk_handshake(self.pg1,
+                                X25519PrivateKey.generate().public_key())
+        self.send_and_assert_no_replies(self.pg1, [p])
+        self.assertEqual(1, self.statistics.get_err_counter(
+            wg_input_node_name + "Peer error"))
+
+        # send a valid handsake init for which we expect a response
+        p = peer_1.mk_handshake(self.pg1)
+
+        rx = self.send_and_expect(self.pg1, [p], self.pg1)
+
+        peer_1.consume_response(rx[0])
+
+        # route a packet into the wg interface
+        #  this is dropped because the peer is still not initiated
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+             UDP(sport=555, dport=556) /
+             Raw())
+        self.send_and_assert_no_replies(self.pg0, [p])
+        self.assertEqual(2, self.statistics.get_err_counter(kp_error))
+
+        # send a data packet from the peer through the tunnel
+        # this completes the handshake
+        p = (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+             UDP(sport=222, dport=223) /
+             Raw())
+        d = peer_1.encrypt_transport(p)
+        p = (peer_1.mk_tunnel_header(self.pg1) /
+             (Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(receiver_index=peer_1.sender,
+                                 counter=0,
+                                 encrypted_encapsulated_packet=d)))
+        rxs = self.send_and_expect(self.pg1, [p], self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+        # send a packets that are routed into the tunnel
+        p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+             IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+             UDP(sport=555, dport=556) /
+             Raw(b'\x00' * 80))
+
+        rxs = self.send_and_expect(self.pg0, p * 255, self.pg1)
+
+        for rx in rxs:
+            rx = IP(peer_1.decrypt_transport(rx))
+
+            # chech the oringial packet is present
+            self.assertEqual(rx[IP].dst, p[IP].dst)
+            self.assertEqual(rx[IP].ttl, p[IP].ttl-1)
+
+        # send packets into the tunnel, expect to receive them on
+        # the other side
+        p = [(peer_1.mk_tunnel_header(self.pg1) /
+              Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(
+                  receiver_index=peer_1.sender,
+                  counter=ii+1,
+                  encrypted_encapsulated_packet=peer_1.encrypt_transport(
+                      (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+                       UDP(sport=222, dport=223) /
+                       Raw())))) for ii in range(255)]
+
+        rxs = self.send_and_expect(self.pg1, p, self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+        peer_1.remove_vpp_config()
+        wg0.remove_vpp_config()
+
+    def test_wg_multi_peer(self):
+        """ multiple peer setup """
+        port = 12343
+
+        # Create interfaces
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+        wg1 = VppWgInterface(self,
+                             self.pg2.local_ip4,
+                             port+1).add_vpp_config()
+        wg0.admin_up()
+        wg1.admin_up()
+
+        # Check peer counter
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), 0)
+
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        # Create many peers on sencond interface
+        NUM_PEERS = 16
+        self.pg2.generate_remote_hosts(NUM_PEERS)
+        self.pg2.configure_ipv4_neighbors()
+        self.pg1.generate_remote_hosts(NUM_PEERS)
+        self.pg1.configure_ipv4_neighbors()
+
+        peers_1 = []
+        peers_2 = []
+        for i in range(NUM_PEERS):
+            peers_1.append(VppWgPeer(self,
+                                     wg0,
+                                     self.pg1.remote_hosts[i].ip4,
+                                     port+1+i,
+                                     ["10.0.%d.4/32" % i]).add_vpp_config())
+            peers_2.append(VppWgPeer(self,
+                                     wg1,
+                                     self.pg2.remote_hosts[i].ip4,
+                                     port+100+i,
+                                     ["10.100.%d.4/32" % i]).add_vpp_config())
+
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), NUM_PEERS*2)
+
+        self.logger.info(self.vapi.cli("show wireguard peer"))
+        self.logger.info(self.vapi.cli("show wireguard interface"))
+        self.logger.info(self.vapi.cli("show adj 37"))
+        self.logger.info(self.vapi.cli("sh ip fib 172.16.3.17"))
+        self.logger.info(self.vapi.cli("sh ip fib 10.11.3.0"))
+
+        # remove peers
+        for p in peers_1:
+            self.assertTrue(p.query_vpp_config())
+            p.remove_vpp_config()
+        for p in peers_2:
+            self.assertTrue(p.query_vpp_config())
+            p.remove_vpp_config()
+
+        wg0.remove_vpp_config()
+        wg1.remove_vpp_config()
+
+
+class WireguardHandoffTests(TestWg):
+    """ Wireguard Tests in multi worker setup """
+    vpp_worker_count = 2
+
+    def test_wg_peer_init(self):
+        """ Handoff """
+        wg_output_node_name = '/err/wg-output-tun/'
+        wg_input_node_name = '/err/wg-input/'
+
+        port = 12353
+
+        # Create interfaces
+        wg0 = VppWgInterface(self,
+                             self.pg1.local_ip4,
+                             port).add_vpp_config()
+        wg0.admin_up()
+        wg0.config_ip4()
+
+        peer_1 = VppWgPeer(self,
+                           wg0,
+                           self.pg1.remote_ip4,
+                           port+1,
+                           ["10.11.2.0/24",
+                            "10.11.3.0/24"]).add_vpp_config()
+        self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+
+        # send a valid handsake init for which we expect a response
+        p = peer_1.mk_handshake(self.pg1)
+
+        rx = self.send_and_expect(self.pg1, [p], self.pg1)
+
+        peer_1.consume_response(rx[0])
+
+        # send a data packet from the peer through the tunnel
+        # this completes the handshake and pins the peer to worker 0
+        p = (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+             UDP(sport=222, dport=223) /
+             Raw())
+        d = peer_1.encrypt_transport(p)
+        p = (peer_1.mk_tunnel_header(self.pg1) /
+             (Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(receiver_index=peer_1.sender,
+                                 counter=0,
+                                 encrypted_encapsulated_packet=d)))
+        rxs = self.send_and_expect(self.pg1, [p], self.pg0,
+                                   worker=0)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+        # send a packets that are routed into the tunnel
+        # and pins the peer tp worker 1
+        pe = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+              IP(src=self.pg0.remote_ip4, dst="10.11.3.2") /
+              UDP(sport=555, dport=556) /
+              Raw(b'\x00' * 80))
+        rxs = self.send_and_expect(self.pg0, pe * 255, self.pg1, worker=1)
+        peer_1.validate_encapped(rxs, pe)
+
+        # send packets into the tunnel, from the other worker
+        p = [(peer_1.mk_tunnel_header(self.pg1) /
+              Wireguard(message_type=4, reserved_zero=0) /
+              WireguardTransport(
+                  receiver_index=peer_1.sender,
+                  counter=ii+1,
+                  encrypted_encapsulated_packet=peer_1.encrypt_transport(
+                      (IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20) /
+                       UDP(sport=222, dport=223) /
+                       Raw())))) for ii in range(255)]
+
+        rxs = self.send_and_expect(self.pg1, p, self.pg0, worker=1)
+
+        for rx in rxs:
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[IP].ttl, 19)
+
+        # send a packets that are routed into the tunnel
+        # from owrker 0
+        rxs = self.send_and_expect(self.pg0, pe * 255, self.pg1, worker=0)
+
+        peer_1.validate_encapped(rxs, pe)
+
+        peer_1.remove_vpp_config()
+        wg0.remove_vpp_config()