HANDSHAKE_NUM_PER_PEER_UNTIL_UNDER_LOAD = 40
HANDSHAKE_NUM_BEFORE_RATELIMITING = 5
+HANDSHAKE_JITTER = 0.5
+
class VppWgPeer(VppObject):
def __init__(self, test, itf, endpoint, port, allowed_ips, persistent_keepalive=15):
if is_ip6 is False:
self._test.assertEqual(p[IP].src, self.itf.src)
self._test.assertEqual(p[IP].dst, self.endpoint)
+ self._test.assert_packet_checksums_valid(p)
else:
self._test.assertEqual(p[IPv6].src, self.itf.src)
self._test.assertEqual(p[IPv6].dst, self.endpoint)
+ self._test.assert_packet_checksums_valid(p, False)
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, is_ip6=False, is_mac2=False):
self.noise.set_as_responder()
def encrypt_transport(self, p):
return self.noise.encrypt(bytes(p))
- def validate_encapped(self, rxs, tx, is_ip6=False):
+ def validate_encapped(self, rxs, tx, is_tunnel_ip6=False, is_transport_ip6=False):
for rx in rxs:
- if is_ip6 is False:
- rx = IP(self.decrypt_transport(rx, is_ip6=is_ip6))
-
+ rx = self.decrypt_transport(rx, is_tunnel_ip6)
+ if is_transport_ip6 is False:
+ rx = IP(rx)
# check the original packet is present
self._test.assertEqual(rx[IP].dst, tx[IP].dst)
self._test.assertEqual(rx[IP].ttl, tx[IP].ttl - 1)
else:
- rx = IPv6(self.decrypt_transport(rx, is_ip6=is_ip6))
-
+ rx = IPv6(rx)
# check the original packet is present
self._test.assertEqual(rx[IPv6].dst, tx[IPv6].dst)
self._test.assertEqual(rx[IPv6].hlim, tx[IPv6].hlim - 1)
self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
if is_resp:
+ # skip the first automatic handshake
+ self.pg1.get_capture(1, timeout=HANDSHAKE_JITTER)
+
# prepare and send a handshake initiation
# expect the peer to send a handshake response
init = peer_1.mk_handshake(self.pg1, is_ip6=is_ip6)
# reset noise to be able to turn into initiator later
peer_1.noise_reset()
else:
+ # skip the first automatic handshake
+ self.pg1.get_capture(1, timeout=HANDSHAKE_JITTER)
+
# prepare and send a bunch of handshake initiations
# expect to switch to under load state
init = peer_1.mk_handshake(self.pg1, is_ip6=is_ip6)
).add_vpp_config()
self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+ # skip the first automatic handshake
+ self.pg1.get_capture(1, timeout=HANDSHAKE_JITTER)
+
# prepare and send a bunch of handshake initiations
# expect to switch to under load state
init = peer_1.mk_handshake(self.pg1)
).add_vpp_config()
self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+ # skip the first automatic handshake
+ self.pg1.get_capture(1, timeout=HANDSHAKE_JITTER)
+
# prepare and send a bunch of handshake initiations
# expect to switch to under load state
init = peer_1.mk_handshake(self.pg1, is_ip6=is_ip6)
).add_vpp_config()
self.assertEqual(len(self.vapi.wireguard_peers_dump()), 2)
+ # skip the first automatic handshake
+ self.pg1.get_capture(NUM_PEERS, timeout=HANDSHAKE_JITTER)
+
# (peer_1) prepare and send a bunch of handshake initiations
# expect not to switch to under load state
init_1 = peer_1.mk_handshake(self.pg1)
rxs = self.send_and_expect(self.pg0, [p], self.pg1)
# verify the data packet
- peer_1.validate_encapped(rxs, p, is_ip6=is_ip6)
+ peer_1.validate_encapped(rxs, p, is_tunnel_ip6=is_ip6, is_transport_ip6=is_ip6)
# remove configs
r1.remove_vpp_config()
self._test_wg_peer_roaming_on_data_tmpl(is_async=True, is_ip6=True)
def test_wg_peer_resp(self):
- """Send handshake response"""
+ """Send handshake response IPv4 tunnel"""
port = 12323
# Create interfaces
peer_1.remove_vpp_config()
wg0.remove_vpp_config()
+ def test_wg_peer_resp_ipv6(self):
+ """Send handshake response IPv6 tunnel"""
+ port = 12323
+
+ # Create interfaces
+ wg0 = VppWgInterface(self, self.pg1.local_ip6, 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_ip6, port + 1, ["10.11.3.0/24"]
+ ).add_vpp_config()
+ self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1)
+
+ r1 = VppIpRoute(
+ self, "10.11.3.0", 24, [VppRoutePath("10.11.3.1", wg0.sw_if_index)]
+ ).add_vpp_config()
+
+ # 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, is_ip6=True)
+
+ # 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, True)
+ 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 * 2, self.pg1)
+ peer_1.validate_encapped(rxs, p, True)
+
+ # send packets into the tunnel, expect to receive them on
+ # the other side
+ p = [
+ (
+ peer_1.mk_tunnel_header(self.pg1, True)
+ / 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)
+
+ r1.remove_vpp_config()
+ peer_1.remove_vpp_config()
+ wg0.remove_vpp_config()
+
def test_wg_peer_v4o4(self):
"""Test v4o4"""
self.pg0.generate_remote_hosts(NUM_IFS)
self.pg0.configure_ipv4_neighbors()
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
# Create interfaces with a peer on each
peers = []
routes = []
self.assertEqual(len(self.vapi.wireguard_peers_dump()), NUM_IFS)
+ # skip the first automatic handshake
+ self.pg1.get_capture(NUM_IFS, timeout=HANDSHAKE_JITTER)
+
for i in range(NUM_IFS):
# send a valid handsake init for which we expect a response
p = peers[i].mk_handshake(self.pg1)
self.assertEqual(len(self.vapi.wireguard_peers_dump()), NUM_PEERS * 2)
+ # skip the first automatic handshake
+ self.pg1.get_capture(NUM_PEERS, timeout=HANDSHAKE_JITTER)
+ self.pg2.get_capture(NUM_PEERS, timeout=HANDSHAKE_JITTER)
+
# Want events from the first perr of wg0
# and from all wg1 peers
peers_0[0].want_events()
wg1.want_events()
for i in range(NUM_PEERS):
- # send a valid handsake init for which we expect a response
+ # wg0 peers: send a valid handsake init for which we expect a response
p = peers_0[i].mk_handshake(self.pg1)
rx = self.send_and_expect(self.pg1, [p], self.pg1)
peers_0[i].consume_response(rx[0])
+
+ # wg0 peers: send empty packet, it means successful connection (WIREGUARD_PEER_ESTABLISHED)
+ keepalive = peers_0[i].encrypt_transport(0)
+ p = peers_0[i].mk_tunnel_header(self.pg1) / (
+ Wireguard(message_type=4, reserved_zero=0)
+ / WireguardTransport(
+ receiver_index=peers_0[i].sender,
+ counter=0,
+ encrypted_encapsulated_packet=keepalive,
+ )
+ )
+ self.send_and_assert_no_replies(self.pg1, [p])
+
+ # wg0 peers: wait for established flag
if i == 0:
peers_0[0].wait_event(ESTABLISHED_FLAG)
+ # wg1 peers: send a valid handsake init for which we expect a response
p = peers_1[i].mk_handshake(self.pg2)
rx = self.send_and_expect(self.pg2, [p], self.pg2)
peers_1[i].consume_response(rx[0])
+ # wg1 peers: send empty packet, it means successful connection (WIREGUARD_PEER_ESTABLISHED)
+ keepalive = peers_1[i].encrypt_transport(0)
+ p = peers_1[i].mk_tunnel_header(self.pg2) / (
+ Wireguard(message_type=4, reserved_zero=0)
+ / WireguardTransport(
+ receiver_index=peers_1[i].sender,
+ counter=0,
+ encrypted_encapsulated_packet=keepalive,
+ )
+ )
+ self.send_and_assert_no_replies(self.pg2, [p])
+
+ # wg1 peers: wait for established flag
wg1.wait_events(ESTABLISHED_FLAG, [peers_1[0].index, peers_1[1].index])
# remove routes
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, "10.11.3.0", 24, [VppRoutePath("10.11.3.1", wg0.sw_if_index)]
).add_vpp_config()
+ # skip the first automatic handshake
+ self.pg1.get_capture(1, timeout=HANDSHAKE_JITTER)
+
# send a valid handsake init for which we expect a response
p = peer_1.mk_handshake(self.pg1)