X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_wireguard.py;h=b9713f6fc080a8cf24149de01a4f77e7457dcd06;hb=562ac2f4e4f55b6337570567eaf8f3f0def62d3f;hp=7055b7ab9360ecb38747b05396da94943ed8cb67;hpb=ae605389253805e07bb293b056e012cdaf5593b2;p=vpp.git diff --git a/test/test_wireguard.py b/test/test_wireguard.py index 7055b7ab936..b9713f6fc08 100644 --- a/test/test_wireguard.py +++ b/test/test_wireguard.py @@ -38,9 +38,11 @@ from Crypto.Random import get_random_bytes from vpp_ipip_tun_interface import VppIpIpTunInterface from vpp_interface import VppInterface +from vpp_pg_interface import is_ipv6_misc from vpp_ip_route import VppIpRoute, VppRoutePath from vpp_object import VppObject from vpp_papi import VppEnum +from framework import is_distro_ubuntu2204, is_distro_debian11, tag_fixme_vpp_debug from framework import VppTestCase from re import compile import unittest @@ -145,6 +147,8 @@ UNDER_LOAD_INTERVAL = 1.0 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): @@ -171,7 +175,7 @@ class VppWgPeer(VppObject): self.endpoint = endpoint self.port = port - def add_vpp_config(self, is_ip6=False): + def add_vpp_config(self): rv = self._test.vapi.wireguard_peer_add( peer={ "public_key": self.public_key_bytes(), @@ -373,12 +377,13 @@ class VppWgPeer(VppObject): 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() @@ -464,17 +469,16 @@ class VppWgPeer(VppObject): 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) @@ -493,6 +497,12 @@ class VppWgPeer(VppObject): self._test.assertEqual(rv.peer_index, self.index) +def is_handshake_init(p): + wg_p = Wireguard(p[Raw]) + + return wg_p[Wireguard].message_type == 1 + + class TestWg(VppTestCase): """Wireguard Test Case""" @@ -518,6 +528,10 @@ class TestWg(VppTestCase): @classmethod def setUpClass(cls): super(TestWg, cls).setUpClass() + if (is_distro_ubuntu2204 == True or is_distro_debian11 == True) and not hasattr( + cls, "vpp" + ): + return try: cls.create_pg_interfaces(range(3)) for i in cls.pg_interfaces: @@ -558,6 +572,25 @@ class TestWg(VppTestCase): self.ratelimited6_err ) + def send_and_assert_no_replies_ignoring_init( + self, intf, pkts, remark="", timeout=None + ): + self.pg_send(intf, pkts) + + def _filter_out_fn(p): + return is_ipv6_misc(p) or is_handshake_init(p) + + try: + if not timeout: + timeout = 1 + for i in self.pg_interfaces: + i.assert_nothing_captured( + timeout=timeout, remark=remark, filter_out_fn=_filter_out_fn + ) + timeout = 0.1 + finally: + pass + def test_wg_interface(self): """Simple interface creation""" port = 12312 @@ -641,6 +674,9 @@ class TestWg(VppTestCase): 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) @@ -733,6 +769,9 @@ class TestWg(VppTestCase): # 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) @@ -798,6 +837,9 @@ class TestWg(VppTestCase): ).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) @@ -862,6 +904,9 @@ class TestWg(VppTestCase): ).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) @@ -932,6 +977,9 @@ class TestWg(VppTestCase): ).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) @@ -955,36 +1003,25 @@ class TestWg(VppTestCase): rxs = self.send_and_expect(self.pg1, [init_2], self.pg1) peer_2.consume_cookie(rxs[0]) - # (peer_1) prepare and send a bunch of handshake initiations with correct mac2 - # expect no ratelimiting and a handshake response + # (peer_1) (peer_2) prepare and send a bunch of handshake initiations with correct mac2 + # expect a handshake response and then ratelimiting + PEER_1_NUM_TO_REJECT = 2 + PEER_2_NUM_TO_REJECT = 5 init_1 = peer_1.mk_handshake(self.pg1) - txs = [init_1] * HANDSHAKE_NUM_BEFORE_RATELIMITING - rxs = self.send_and_expect_some(self.pg1, txs, self.pg1) - self.assertEqual( - self.base_ratelimited4_err, - self.statistics.get_err_counter(self.ratelimited4_err), - ) - - # (peer_1) verify the response - peer_1.consume_response(rxs[0]) - peer_1.noise_reset() - - # (peer_1) send another two handshake initiations with correct mac2 - # expect ratelimiting - # (peer_2) prepare and send a handshake initiation with correct mac2 - # expect no ratelimiting and a handshake response + txs = [init_1] * (HANDSHAKE_NUM_BEFORE_RATELIMITING + PEER_1_NUM_TO_REJECT) init_2 = peer_2.mk_handshake(self.pg1) - txs = [init_1, init_2, init_1] + txs += [init_2] * (HANDSHAKE_NUM_BEFORE_RATELIMITING + PEER_2_NUM_TO_REJECT) rxs = self.send_and_expect_some(self.pg1, txs, self.pg1) - # (peer_1) verify ratelimiting - self.assertEqual( - self.base_ratelimited4_err + 2, - self.statistics.get_err_counter(self.ratelimited4_err), + self.assertTrue( + self.base_ratelimited4_err + PEER_1_NUM_TO_REJECT + < self.statistics.get_err_counter(self.ratelimited4_err) + <= self.base_ratelimited4_err + PEER_1_NUM_TO_REJECT + PEER_2_NUM_TO_REJECT ) - # (peer_2) verify the response - peer_2.consume_response(rxs[0]) + # (peer_1) (peer_2) verify the response + peer_1.consume_response(rxs[0]) + peer_2.consume_response(rxs[1]) # clear up under load state self.sleep(UNDER_LOAD_INTERVAL) @@ -1202,7 +1239,7 @@ class TestWg(VppTestCase): 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() @@ -1226,7 +1263,7 @@ class TestWg(VppTestCase): 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 @@ -1303,6 +1340,83 @@ class TestWg(VppTestCase): 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""" @@ -1334,7 +1448,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_kp4_err + 1, self.statistics.get_err_counter(self.kp4_error) ) @@ -1348,7 +1462,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_peer4_out_err + 1, self.statistics.get_err_counter(self.peer4_out_err), @@ -1357,7 +1471,7 @@ class TestWg(VppTestCase): # 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.send_and_assert_no_replies_ignoring_init(self.pg1, [p]) self.assertEqual( self.base_mac4_err + 1, self.statistics.get_err_counter(self.mac4_error) ) @@ -1366,7 +1480,7 @@ class TestWg(VppTestCase): p = peer_1.mk_handshake( self.pg1, False, X25519PrivateKey.generate().public_key() ) - self.send_and_assert_no_replies(self.pg1, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg1, [p]) self.assertEqual( self.base_peer4_in_err + 1, self.statistics.get_err_counter(self.peer4_in_err), @@ -1387,7 +1501,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_kp4_err + 2, self.statistics.get_err_counter(self.kp4_error) ) @@ -1473,7 +1587,7 @@ class TestWg(VppTestCase): peer_1 = VppWgPeer( self, wg0, self.pg1.remote_ip6, port + 1, ["1::3:0/112"] - ).add_vpp_config(True) + ).add_vpp_config() self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1) r1 = VppIpRoute( @@ -1493,7 +1607,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_kp6_err + 1, self.statistics.get_err_counter(self.kp6_error) @@ -1508,7 +1622,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_peer6_out_err + 1, self.statistics.get_err_counter(self.peer6_out_err), @@ -1517,7 +1631,7 @@ class TestWg(VppTestCase): # send a handsake from the peer with an invalid MAC p = peer_1.mk_handshake(self.pg1, True) p[WireguardInitiation].mac1 = b"foobar" - self.send_and_assert_no_replies(self.pg1, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg1, [p]) self.assertEqual( self.base_mac6_err + 1, self.statistics.get_err_counter(self.mac6_error) @@ -1527,7 +1641,7 @@ class TestWg(VppTestCase): p = peer_1.mk_handshake( self.pg1, True, X25519PrivateKey.generate().public_key() ) - self.send_and_assert_no_replies(self.pg1, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg1, [p]) self.assertEqual( self.base_peer6_in_err + 1, self.statistics.get_err_counter(self.peer6_in_err), @@ -1548,7 +1662,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_kp6_err + 2, self.statistics.get_err_counter(self.kp6_error) ) @@ -1634,7 +1748,7 @@ class TestWg(VppTestCase): peer_1 = VppWgPeer( self, wg0, self.pg1.remote_ip4, port + 1, ["1::3:0/112"] - ).add_vpp_config(True) + ).add_vpp_config() self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1) r1 = VppIpRoute( @@ -1650,7 +1764,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_kp6_err + 1, self.statistics.get_err_counter(self.kp6_error) ) @@ -1658,7 +1772,7 @@ class TestWg(VppTestCase): # 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.send_and_assert_no_replies_ignoring_init(self.pg1, [p]) self.assertEqual( self.base_mac4_err + 1, self.statistics.get_err_counter(self.mac4_error) @@ -1668,7 +1782,7 @@ class TestWg(VppTestCase): p = peer_1.mk_handshake( self.pg1, False, X25519PrivateKey.generate().public_key() ) - self.send_and_assert_no_replies(self.pg1, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg1, [p]) self.assertEqual( self.base_peer4_in_err + 1, self.statistics.get_err_counter(self.peer4_in_err), @@ -1689,7 +1803,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_kp6_err + 2, self.statistics.get_err_counter(self.kp6_error) ) @@ -1790,7 +1904,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_kp4_err + 1, self.statistics.get_err_counter(self.kp4_error) ) @@ -1798,7 +1912,7 @@ class TestWg(VppTestCase): # send a handsake from the peer with an invalid MAC p = peer_1.mk_handshake(self.pg1, True) p[WireguardInitiation].mac1 = b"foobar" - self.send_and_assert_no_replies(self.pg1, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg1, [p]) self.assertEqual( self.base_mac6_err + 1, self.statistics.get_err_counter(self.mac6_error) ) @@ -1807,7 +1921,7 @@ class TestWg(VppTestCase): p = peer_1.mk_handshake( self.pg1, True, X25519PrivateKey.generate().public_key() ) - self.send_and_assert_no_replies(self.pg1, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg1, [p]) self.assertEqual( self.base_peer6_in_err + 1, self.statistics.get_err_counter(self.peer6_in_err), @@ -1828,7 +1942,7 @@ class TestWg(VppTestCase): / UDP(sport=555, dport=556) / Raw() ) - self.send_and_assert_no_replies(self.pg0, [p]) + self.send_and_assert_no_replies_ignoring_init(self.pg0, [p]) self.assertEqual( self.base_kp4_err + 2, self.statistics.get_err_counter(self.kp4_error) ) @@ -2001,6 +2115,9 @@ class TestWg(VppTestCase): 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 = [] @@ -2032,6 +2149,9 @@ class TestWg(VppTestCase): 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) @@ -2185,23 +2305,55 @@ class TestWg(VppTestCase): 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 @@ -2226,7 +2378,140 @@ class TestWg(VppTestCase): wg0.remove_vpp_config() wg1.remove_vpp_config() + def test_wg_sending_handshake_when_admin_down(self): + """Sending handshake when admin down""" + port = 12323 + + # create wg interface + wg0 = VppWgInterface(self, self.pg1.local_ip4, port).add_vpp_config() + wg0.config_ip4() + + # create a peer + peer_1 = VppWgPeer( + self, wg0, self.pg1.remote_ip4, port + 1, ["10.11.3.0/24"] + ).add_vpp_config() + self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # wait for the peer to send a handshake initiation + # expect no handshakes + for i in range(2): + self.pg1.assert_nothing_captured(remark="handshake packet(s) sent") + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # administratively enable the wg interface + # expect the peer to send a handshake initiation + wg0.admin_up() + rxs = self.pg1.get_capture(1, timeout=2) + peer_1.consume_init(rxs[0], self.pg1) + + self.pg_enable_capture(self.pg_interfaces) + self.pg_start() + + # administratively disable the wg interface + # expect no handshakes + wg0.admin_down() + for i in range(6): + self.pg1.assert_nothing_captured(remark="handshake packet(s) sent") + + # remove configs + peer_1.remove_vpp_config() + wg0.remove_vpp_config() + + def test_wg_sending_data_when_admin_down(self): + """Sending data when admin down""" + port = 12323 + + # create wg interface + 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() + + # create a peer + peer_1 = VppWgPeer( + self, wg0, self.pg1.remote_ip4, port + 1, ["10.11.3.0/24"] + ).add_vpp_config() + self.assertEqual(len(self.vapi.wireguard_peers_dump()), 1) + + # create a route to rewrite traffic into the wg interface + 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 initiation + rxs = self.pg1.get_capture(1, timeout=2) + + # prepare and send a handshake response + # expect a keepalive message + resp = peer_1.consume_init(rxs[0], self.pg1) + rxs = self.send_and_expect(self.pg1, [resp], self.pg1) + + # verify the keepalive message + b = peer_1.decrypt_transport(rxs[0]) + self.assertEqual(0, len(b)) + + # prepare and send a packet that will be rewritten into the wg interface + # expect a data packet sent + 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() + ) + rxs = self.send_and_expect(self.pg0, [p], self.pg1) + + # verify the data packet + peer_1.validate_encapped(rxs, p) + # administratively disable the wg interface + wg0.admin_down() + + # send a packet that will be rewritten into the wg interface + # expect no data packets sent + self.send_and_assert_no_replies(self.pg0, [p]) + + # administratively enable the wg interface + # expect the peer to send a handshake initiation + wg0.admin_up() + peer_1.noise_reset() + rxs = self.pg1.get_capture(1, timeout=2) + resp = peer_1.consume_init(rxs[0], self.pg1) + + # send a packet that will be rewritten into the wg interface + # expect no data packets sent because the peer is not initiated + self.send_and_assert_no_replies(self.pg0, [p]) + self.assertEqual( + self.base_kp4_err + 1, self.statistics.get_err_counter(self.kp4_error) + ) + + # send a handshake response and expect a keepalive message + rxs = self.send_and_expect(self.pg1, [resp], self.pg1) + + # verify the keepalive message + b = peer_1.decrypt_transport(rxs[0]) + self.assertEqual(0, len(b)) + + # send a packet that will be rewritten into the wg interface + # expect a data packet sent + rxs = self.send_and_expect(self.pg0, [p], self.pg1) + + # verify the data packet + peer_1.validate_encapped(rxs, p) + + # remove configs + r1.remove_vpp_config() + peer_1.remove_vpp_config() + wg0.remove_vpp_config() + + +@tag_fixme_vpp_debug class WireguardHandoffTests(TestWg): """Wireguard Tests in multi worker setup""" @@ -2242,6 +2527,9 @@ class WireguardHandoffTests(TestWg): 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() @@ -2251,6 +2539,9 @@ class WireguardHandoffTests(TestWg): 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) @@ -2316,7 +2607,7 @@ class WireguardHandoffTests(TestWg): self.assertEqual(rx[IP].ttl, 19) # send a packets that are routed into the tunnel - # from owrker 0 + # from worker 0 rxs = self.send_and_expect(self.pg0, pe * 255, self.pg1, worker=0) peer_1.validate_encapped(rxs, pe) @@ -2395,7 +2686,7 @@ class TestWgFIB(VppTestCase): self.assertEqual(0, len(b)) # prepare and send a packet that will be rewritten into the wg interface - # expect a data packet sent to the new endpoint + # expect a data packet sent p = ( Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IP(src=self.pg0.remote_ip4, dst="10.11.3.2")