description: "Wireguard protocol implementation"
state: development
properties: [API, CLI]
-missing:
- - Peers roaming between different external IPs
-------------------------------------------------
1. Use all benefits of VPP-engine.
-2. Add peers roaming support
u8 public_key[NOISE_PUBLIC_KEY_LEN + 1];
fib_prefix_t allowed_ip, *allowed_ips = NULL;
ip_prefix_t pfx;
- ip_address_t ip;
+ ip_address_t ip = ip_address_initializer;
u32 portDst = 0, table_id = 0;
u32 persistent_keepalive = 0;
u32 tun_sw_if_index = ~0;
}
}
+ if (0 == vec_len (allowed_ips))
+ {
+ error = clib_error_return (0, "Allowed IPs are not specified");
+ goto done;
+ }
+
rv = wg_peer_add (tun_sw_if_index, public_key, table_id, &ip_addr_46 (&ip),
allowed_ips, portDst, persistent_keepalive, &peer_index);
WG_INPUT_N_NEXT,
} wg_input_next_t;
-/* static void */
-/* set_peer_address (wg_peer_t * peer, ip4_address_t ip4, u16 udp_port) */
-/* { */
-/* if (peer) */
-/* { */
-/* ip46_address_set_ip4 (&peer->dst.addr, &ip4); */
-/* peer->dst.port = udp_port; */
-/* } */
-/* } */
-
static u8
is_ip4_header (u8 *data)
{
}
udp_header_t *uhd = current_b_data - sizeof (udp_header_t);
- u16 udp_src_port = clib_host_to_net_u16 (uhd->src_port);;
- u16 udp_dst_port = clib_host_to_net_u16 (uhd->dst_port);;
+ u16 udp_src_port = clib_host_to_net_u16 (uhd->src_port);
+ u16 udp_dst_port = clib_host_to_net_u16 (uhd->dst_port);
message_header_t *header = current_b_data;
return WG_INPUT_ERROR_PEER;
}
- // set_peer_address (peer, ip4_src, udp_src_port);
+ wg_peer_update_endpoint (rp->r_peer_idx, &src_ip, udp_src_port);
+
if (PREDICT_FALSE (!wg_send_handshake_response (vm, peer)))
{
vlib_node_increment_counter (vm, node_idx,
return WG_INPUT_ERROR_PEER;
}
- // set_peer_address (peer, ip4_src, udp_src_port);
+ wg_peer_update_endpoint (peeri, &src_ip, udp_src_port);
+
if (noise_remote_begin_session (vm, &peer->remote))
{
return ret;
}
+static_always_inline void
+wg_find_outer_addr_port (vlib_buffer_t *b, ip46_address_t *addr, u16 *port,
+ u8 is_ip4)
+{
+ if (is_ip4)
+ {
+ ip4_udp_header_t *ip4_udp_hdr =
+ vlib_buffer_get_current (b) - sizeof (ip4_udp_header_t);
+ ip46_address_set_ip4 (addr, &ip4_udp_hdr->ip4.src_address);
+ *port = clib_net_to_host_u16 (ip4_udp_hdr->udp.src_port);
+ }
+ else
+ {
+ ip6_udp_header_t *ip6_udp_hdr =
+ vlib_buffer_get_current (b) - sizeof (ip6_udp_header_t);
+ ip46_address_set_ip6 (addr, &ip6_udp_hdr->ip6.src_address);
+ *port = clib_net_to_host_u16 (ip6_udp_hdr->udp.src_port);
+ }
+}
+
always_inline uword
wg_input_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
vlib_frame_t *frame, u8 is_ip4, u16 async_next_node)
}
else
{
- peer_idx = NULL;
-
/* Handshake packets should be processed in main thread */
if (thread_index != 0)
{
}
message_data_t *data = vlib_buffer_get_current (b[0]);
+ ip46_address_t out_src_ip;
+ u16 out_udp_src_port;
+
+ wg_find_outer_addr_port (b[0], &out_src_ip, &out_udp_src_port, is_ip4);
if (data->receiver_index != last_rec_idx)
{
if (PREDICT_FALSE (peer_idx && (last_peer_time_idx != peer_idx)))
{
+ wg_peer_update_endpoint_from_mt (*peer_idx, &out_src_ip,
+ out_udp_src_port);
wg_timers_any_authenticated_packet_received_opt (peer, time);
wg_timers_any_authenticated_packet_traversal (peer);
last_peer_time_idx = peer_idx;
}
always_inline uword
-wg_input_post (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
+wg_input_post (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame,
+ u8 is_ip4)
{
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
bool is_keepalive = false;
message_data_t *data = vlib_buffer_get_current (b[0]);
+ ip46_address_t out_src_ip;
+ u16 out_udp_src_port;
+
+ wg_find_outer_addr_port (b[0], &out_src_ip, &out_udp_src_port, is_ip4);
if (data->receiver_index != last_rec_idx)
{
if (PREDICT_FALSE (peer_idx && (last_peer_time_idx != peer_idx)))
{
+ wg_peer_update_endpoint_from_mt (*peer_idx, &out_src_ip,
+ out_udp_src_port);
wg_timers_any_authenticated_packet_received_opt (peer, time);
wg_timers_any_authenticated_packet_traversal (peer);
last_peer_time_idx = peer_idx;
VLIB_NODE_FN (wg4_input_post_node)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
{
- return wg_input_post (vm, node, from_frame);
+ return wg_input_post (vm, node, from_frame, /* is_ip4 */ 1);
}
VLIB_NODE_FN (wg6_input_post_node)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
{
- return wg_input_post (vm, node, from_frame);
+ return wg_input_post (vm, node, from_frame, /* is_ip4 */ 0);
}
/* *INDENT-OFF* */
#include <vnet/adj/adj_midchain.h>
#include <vnet/fib/fib_table.h>
+#include <vnet/fib/fib_entry_track.h>
#include <wireguard/wireguard_peer.h>
#include <wireguard/wireguard_if.h>
#include <wireguard/wireguard_messages.h>
wg_peer_endpoint_reset (&peer->src);
wg_peer_endpoint_reset (&peer->dst);
- adj_index_t *adj_index;
- vec_foreach (adj_index, peer->adj_indices)
+ wg_peer_adj_t *peer_adj;
+ vec_foreach (peer_adj, peer->adjs)
{
- if (INDEX_INVALID != *adj_index)
- {
- wg_peer_by_adj_index[*adj_index] = INDEX_INVALID;
- }
+ wg_peer_by_adj_index[peer_adj->adj_index] = INDEX_INVALID;
+ if (FIB_NODE_INDEX_INVALID != peer_adj->fib_entry_index)
+ fib_entry_untrack (peer_adj->fib_entry_index, peer_adj->sibling_index);
+ if (adj_is_valid (peer_adj->adj_index))
+ adj_nbr_midchain_unstack (peer_adj->adj_index);
}
peer->input_thread_index = ~0;
peer->output_thread_index = ~0;
peer->new_handshake_interval_tick = 0;
peer->rehandshake_interval_tick = 0;
peer->timer_need_another_keepalive = false;
+ vec_free (peer->rewrite);
vec_free (peer->allowed_ips);
- vec_free (peer->adj_indices);
+ vec_free (peer->adjs);
}
static void
}
static void
-wg_peer_adj_stack (wg_peer_t *peer, adj_index_t ai)
+wg_peer_adj_stack (wg_peer_t *peer, wg_peer_adj_t *peer_adj)
{
ip_adjacency_t *adj;
u32 sw_if_index;
wg_if_t *wgi;
fib_protocol_t fib_proto;
- if (!adj_is_valid (ai))
+ if (!adj_is_valid (peer_adj->adj_index))
return;
- adj = adj_get (ai);
+ adj = adj_get (peer_adj->adj_index);
sw_if_index = adj->rewrite_header.sw_if_index;
u8 is_ip4 = ip46_address_is_ip4 (&peer->src.addr);
fib_proto = is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
if (!wgi)
return;
- if (!vnet_sw_interface_is_admin_up (vnet_get_main (), wgi->sw_if_index))
+ if (!vnet_sw_interface_is_admin_up (vnet_get_main (), wgi->sw_if_index) ||
+ !wg_peer_can_send (peer))
{
- adj_midchain_delegate_unstack (ai);
+ adj_nbr_midchain_unstack (peer_adj->adj_index);
}
else
{
u32 fib_index;
fib_index = fib_table_find (fib_proto, peer->table_id);
+ peer_adj->fib_entry_index =
+ fib_entry_track (fib_index, &dst, FIB_NODE_TYPE_ADJ,
+ peer_adj->adj_index, &peer_adj->sibling_index);
- adj_midchain_delegate_stack (ai, fib_index, &dst);
+ adj_nbr_midchain_stack_on_fib_entry (
+ peer_adj->adj_index, peer_adj->fib_entry_index,
+ fib_forw_chain_type_from_fib_proto (dst.fp_proto));
}
}
wg_peer_if_admin_state_change (index_t peeri, void *data)
{
wg_peer_t *peer;
- adj_index_t *adj_index;
+ wg_peer_adj_t *peer_adj;
peer = wg_peer_get (peeri);
- vec_foreach (adj_index, peer->adj_indices)
+ vec_foreach (peer_adj, peer->adjs)
{
- wg_peer_adj_stack (peer, *adj_index);
+ wg_peer_adj_stack (peer, peer_adj);
}
return (WALK_CONTINUE);
}
ip_adjacency_t *adj;
wg_peer_t *peer;
fib_prefix_t *allowed_ip;
+ wg_peer_adj_t *peer_adj;
adj = adj_get (*adj_index);
if (fib_prefix_is_cover_addr_46 (allowed_ip,
&adj->sub_type.nbr.next_hop))
{
- vec_add1 (peer->adj_indices, *adj_index);
+ vec_add2 (peer->adjs, peer_adj, 1);
+ peer_adj->adj_index = *adj_index;
+ peer_adj->fib_entry_index = FIB_NODE_INDEX_INVALID;
+ peer_adj->sibling_index = ~0;
+
vec_validate_init_empty (wg_peer_by_adj_index, *adj_index,
INDEX_INVALID);
- wg_peer_by_adj_index[*adj_index] = peer - wg_peer_pool;
+ wg_peer_by_adj_index[*adj_index] = peeri;
fixup = wg_peer_get_fixup (peer, adj_get_link_type (*adj_index));
adj_nbr_midchain_update_rewrite (*adj_index, fixup, NULL,
ADJ_FLAG_MIDCHAIN_IP_STACK,
vec_dup (peer->rewrite));
- wg_peer_adj_stack (peer, *adj_index);
+ wg_peer_adj_stack (peer, peer_adj);
return (WALK_STOP);
}
}
wg_api_peer_event (peeri, peer->flags);
}
+void
+wg_peer_update_endpoint (index_t peeri, const ip46_address_t *addr, u16 port)
+{
+ wg_peer_t *peer = wg_peer_get (peeri);
+
+ if (ip46_address_is_equal (&peer->dst.addr, addr) && peer->dst.port == port)
+ return;
+
+ wg_peer_endpoint_init (&peer->dst, addr, port);
+
+ u8 is_ip4 = ip46_address_is_ip4 (&peer->dst.addr);
+ vec_free (peer->rewrite);
+ peer->rewrite = wg_build_rewrite (&peer->src.addr, peer->src.port,
+ &peer->dst.addr, peer->dst.port, is_ip4);
+
+ wg_peer_adj_t *peer_adj;
+ vec_foreach (peer_adj, peer->adjs)
+ {
+ if (FIB_NODE_INDEX_INVALID != peer_adj->fib_entry_index)
+ {
+ fib_entry_untrack (peer_adj->fib_entry_index,
+ peer_adj->sibling_index);
+ peer_adj->fib_entry_index = FIB_NODE_INDEX_INVALID;
+ peer_adj->sibling_index = ~0;
+ }
+
+ if (adj_is_valid (peer_adj->adj_index))
+ {
+ adj_midchain_fixup_t fixup =
+ wg_peer_get_fixup (peer, adj_get_link_type (peer_adj->adj_index));
+ adj_nbr_midchain_update_rewrite (peer_adj->adj_index, fixup, NULL,
+ ADJ_FLAG_MIDCHAIN_IP_STACK,
+ vec_dup (peer->rewrite));
+ wg_peer_adj_stack (peer, peer_adj);
+ }
+ }
+}
+
+typedef struct wg_peer_upd_ep_args_t_
+{
+ index_t peeri;
+ ip46_address_t addr;
+ u16 port;
+} wg_peer_upd_ep_args_t;
+
+static void
+wg_peer_update_endpoint_thread_fn (wg_peer_upd_ep_args_t *args)
+{
+ wg_peer_update_endpoint (args->peeri, &args->addr, args->port);
+}
+
+void
+wg_peer_update_endpoint_from_mt (index_t peeri, const ip46_address_t *addr,
+ u16 port)
+{
+ wg_peer_upd_ep_args_t args = {
+ .peeri = peeri,
+ .port = port,
+ };
+
+ ip46_address_copy (&args.addr, addr);
+ vlib_rpc_call_main_thread (wg_peer_update_endpoint_thread_fn, (u8 *) &args,
+ sizeof (args));
+}
+
int
wg_peer_add (u32 tun_sw_if_index, const u8 public_key[NOISE_PUBLIC_KEY_LEN],
u32 table_id, const ip46_address_t *endpoint,
if (pool_elts (wg_peer_pool) > MAX_PEERS)
return (VNET_API_ERROR_LIMIT_EXCEEDED);
- pool_get (wg_peer_pool, peer);
+ pool_get_zero (wg_peer_pool, peer);
wg_peer_init (vm, peer);
{
index_t peeri = va_arg (*va, index_t);
fib_prefix_t *allowed_ip;
- adj_index_t *adj_index;
u8 key[NOISE_KEY_LEN_BASE64];
wg_peer_t *peer;
+ wg_peer_adj_t *peer_adj;
peer = wg_peer_get (peeri);
key_to_base64 (peer->remote.r_public, NOISE_PUBLIC_KEY_LEN, key);
peer->wg_sw_if_index, peer->persistent_keepalive_interval, peer->flags,
pool_elts (peer->api_clients));
s = format (s, "\n adj:");
- vec_foreach (adj_index, peer->adj_indices)
+ vec_foreach (peer_adj, peer->adjs)
{
- s = format (s, " %d", *adj_index);
+ s = format (s, " %d", peer_adj->adj_index);
}
s = format (s, "\n key:%=s %U", key, format_hex_bytes,
peer->remote.r_public, NOISE_PUBLIC_KEY_LEN);
WG_PEER_ESTABLISHED = 0x2,
} wg_peer_flags;
+typedef struct wg_peer_adj_t_
+{
+ adj_index_t adj_index;
+ fib_node_index_t fib_entry_index;
+ u32 sibling_index;
+} wg_peer_adj_t;
+
typedef struct wg_peer
{
noise_remote_t remote;
wg_peer_endpoint_t dst;
wg_peer_endpoint_t src;
u32 table_id;
- adj_index_t *adj_indices;
+ wg_peer_adj_t *adjs;
/* rewrite built from address information */
u8 *rewrite;
void wg_api_peer_event (index_t peeri, wg_peer_flags flags);
void wg_peer_update_flags (index_t peeri, wg_peer_flags flag, bool add_del);
+void wg_peer_update_endpoint (index_t peeri, const ip46_address_t *addr,
+ u16 port);
+void wg_peer_update_endpoint_from_mt (index_t peeri,
+ const ip46_address_t *addr, u16 port);
static inline bool
wg_peer_is_dead (wg_peer_t *peer)
return (false);
}
+static inline bool
+wg_peer_can_send (wg_peer_t *peer)
+{
+ return peer && peer->rewrite;
+}
+
#endif // __included_wg_peer_h__
/*
wg_build_rewrite (ip46_address_t *src_addr, u16 src_port,
ip46_address_t *dst_addr, u16 dst_port, u8 is_ip4)
{
+ if (ip46_address_is_zero (dst_addr) || 0 == dst_port)
+ return NULL;
+
u8 *rewrite = NULL;
if (is_ip4)
{
{
ASSERT (vm->thread_index == 0);
+ if (!wg_peer_can_send (peer))
+ return false;
+
message_handshake_initiation_t packet;
if (!is_retry)
{
ASSERT (vm->thread_index == 0);
+ if (!wg_peer_can_send (peer))
+ return false;
+
u32 size_of_packet = message_data_len (0);
message_data_t *packet =
(message_data_t *) wg_main.per_thread_data[vm->thread_index].data;
{
message_handshake_response_t packet;
+ if (!wg_peer_can_send (peer))
+ return false;
+
if (noise_create_response (vm,
&peer->remote,
&packet.sender_index,
u32 bi0 = 0;
u8 is_ip4 = ip46_address_is_ip4 (remote_addr);
+ bool ret;
rewrite = wg_build_rewrite (wg_if_addr, wg_if_port, remote_addr, remote_port,
is_ip4);
- if (!wg_create_buffer (vm, rewrite, (u8 *) &packet, sizeof (packet), &bi0,
- is_ip4))
+
+ ret = wg_create_buffer (vm, rewrite, (u8 *) &packet, sizeof (packet), &bi0,
+ is_ip4);
+ vec_free (rewrite);
+ if (!ret)
return false;
ip46_enqueue_packet (vm, bi0, is_ip4);
return "wireguard-%d" % self._sw_if_index
-def find_route(test, prefix, is_ip6, table_id=0):
- routes = test.vapi.ip_route_dump(table_id, is_ip6)
-
- 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"
self.noise = NoiseConnection.from_name(NOISE_HANDSHAKE_NAME)
+ def change_endpoint(self, endpoint, port):
+ self.endpoint = endpoint
+ self.port = port
+
def add_vpp_config(self, is_ip6=False):
rv = self._test.vapi.wireguard_peer_add(
peer={
peers = self._test.vapi.wireguard_peers_dump()
for p in peers:
+ # "::" endpoint will be returned as "0.0.0.0" in peer's details
+ endpoint = "0.0.0.0" if self.endpoint == "::" else self.endpoint
if (
p.peer.public_key == self.public_key_bytes()
and p.peer.port == self.port
- and str(p.peer.endpoint) == self.endpoint
+ and str(p.peer.endpoint) == endpoint
and p.peer.sw_if_index == self.itf.sw_if_index
and len(self.allowed_ips) == p.peer.n_allowed_ips
):
def validate_encapped(self, rxs, tx, is_ip6=False):
for rx in rxs:
if is_ip6 is False:
- rx = IP(self.decrypt_transport(rx))
+ rx = IP(self.decrypt_transport(rx, is_ip6=is_ip6))
- # chech the oringial packet is present
+ # 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))
+ rx = IPv6(self.decrypt_transport(rx, is_ip6=is_ip6))
- # chech the oringial packet is present
+ # check the original packet is present
self._test.assertEqual(rx[IPv6].dst, tx[IPv6].dst)
- self._test.assertEqual(rx[IPv6].ttl, tx[IPv6].ttl - 1)
+ self._test.assertEqual(rx[IPv6].hlim, tx[IPv6].hlim - 1)
def want_events(self):
self._test.vapi.want_wireguard_peer_events(
peer_2.remove_vpp_config()
wg0.remove_vpp_config()
+ def _test_wg_peer_roaming_on_handshake_tmpl(self, is_endpoint_set, is_resp, is_ip6):
+ port = 12323
+
+ # create wg interface
+ if is_ip6:
+ wg0 = VppWgInterface(self, self.pg1.local_ip6, port).add_vpp_config()
+ wg0.admin_up()
+ wg0.config_ip6()
+ else:
+ 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 more remote hosts
+ NUM_REMOTE_HOSTS = 2
+ self.pg1.generate_remote_hosts(NUM_REMOTE_HOSTS)
+ if is_ip6:
+ self.pg1.configure_ipv6_neighbors()
+ else:
+ self.pg1.configure_ipv4_neighbors()
+
+ # create a peer
+ if is_ip6:
+ peer_1 = VppWgPeer(
+ test=self,
+ itf=wg0,
+ endpoint=self.pg1.remote_hosts[0].ip6 if is_endpoint_set else "::",
+ port=port + 1 if is_endpoint_set else 0,
+ allowed_ips=["1::3:0/112"],
+ ).add_vpp_config()
+ else:
+ peer_1 = VppWgPeer(
+ test=self,
+ itf=wg0,
+ endpoint=self.pg1.remote_hosts[0].ip4 if is_endpoint_set else "0.0.0.0",
+ port=port + 1 if is_endpoint_set else 0,
+ allowed_ips=["10.11.3.0/24"],
+ ).add_vpp_config()
+ self.assertTrue(peer_1.query_vpp_config())
+
+ if is_resp:
+ # wait for the peer to send a handshake initiation
+ rxs = self.pg1.get_capture(1, timeout=2)
+ # prepare a handshake response
+ resp = peer_1.consume_init(rxs[0], self.pg1, is_ip6=is_ip6)
+ # change endpoint
+ if is_ip6:
+ peer_1.change_endpoint(self.pg1.remote_hosts[1].ip6, port + 100)
+ resp[IPv6].src, resp[UDP].sport = peer_1.endpoint, peer_1.port
+ else:
+ peer_1.change_endpoint(self.pg1.remote_hosts[1].ip4, port + 100)
+ resp[IP].src, resp[UDP].sport = peer_1.endpoint, peer_1.port
+ # send the handshake response
+ # expect a keepalive message sent to the new endpoint
+ rxs = self.send_and_expect(self.pg1, [resp], self.pg1)
+ # verify the keepalive message
+ b = peer_1.decrypt_transport(rxs[0], is_ip6=is_ip6)
+ self.assertEqual(0, len(b))
+ else:
+ # change endpoint
+ if is_ip6:
+ peer_1.change_endpoint(self.pg1.remote_hosts[1].ip6, port + 100)
+ else:
+ peer_1.change_endpoint(self.pg1.remote_hosts[1].ip4, port + 100)
+ # prepare and send a handshake initiation
+ # expect a handshake response sent to the new endpoint
+ init = peer_1.mk_handshake(self.pg1, is_ip6=is_ip6)
+ rxs = self.send_and_expect(self.pg1, [init], self.pg1)
+ # verify the response
+ peer_1.consume_response(rxs[0], is_ip6=is_ip6)
+ self.assertTrue(peer_1.query_vpp_config())
+
+ # remove configs
+ peer_1.remove_vpp_config()
+ wg0.remove_vpp_config()
+
+ def test_wg_peer_roaming_on_init_v4(self):
+ """Peer roaming on handshake initiation (v4)"""
+ self._test_wg_peer_roaming_on_handshake_tmpl(
+ is_endpoint_set=False, is_resp=False, is_ip6=False
+ )
+
+ def test_wg_peer_roaming_on_init_v6(self):
+ """Peer roaming on handshake initiation (v6)"""
+ self._test_wg_peer_roaming_on_handshake_tmpl(
+ is_endpoint_set=False, is_resp=False, is_ip6=True
+ )
+
+ def test_wg_peer_roaming_on_resp_v4(self):
+ """Peer roaming on handshake response (v4)"""
+ self._test_wg_peer_roaming_on_handshake_tmpl(
+ is_endpoint_set=True, is_resp=True, is_ip6=False
+ )
+
+ def test_wg_peer_roaming_on_resp_v6(self):
+ """Peer roaming on handshake response (v6)"""
+ self._test_wg_peer_roaming_on_handshake_tmpl(
+ is_endpoint_set=True, is_resp=True, is_ip6=True
+ )
+
+ def _test_wg_peer_roaming_on_data_tmpl(self, is_async, is_ip6):
+ self.vapi.wg_set_async_mode(is_async)
+ port = 12323
+
+ # create wg interface
+ if is_ip6:
+ wg0 = VppWgInterface(self, self.pg1.local_ip6, port).add_vpp_config()
+ wg0.admin_up()
+ wg0.config_ip6()
+ else:
+ 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 more remote hosts
+ NUM_REMOTE_HOSTS = 2
+ self.pg1.generate_remote_hosts(NUM_REMOTE_HOSTS)
+ if is_ip6:
+ self.pg1.configure_ipv6_neighbors()
+ else:
+ self.pg1.configure_ipv4_neighbors()
+
+ # create a peer
+ if is_ip6:
+ peer_1 = VppWgPeer(
+ self, wg0, self.pg1.remote_hosts[0].ip6, port + 1, ["1::3:0/112"]
+ ).add_vpp_config()
+ else:
+ peer_1 = VppWgPeer(
+ self, wg0, self.pg1.remote_hosts[0].ip4, port + 1, ["10.11.3.0/24"]
+ ).add_vpp_config()
+ self.assertTrue(peer_1.query_vpp_config())
+
+ # create a route to rewrite traffic into the wg interface
+ if is_ip6:
+ r1 = VppIpRoute(
+ self, "1::3:0", 112, [VppRoutePath("1::3:1", wg0.sw_if_index)]
+ ).add_vpp_config()
+ else:
+ 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, is_ip6=is_ip6)
+ rxs = self.send_and_expect(self.pg1, [resp], self.pg1)
+
+ # verify the keepalive message
+ b = peer_1.decrypt_transport(rxs[0], is_ip6=is_ip6)
+ self.assertEqual(0, len(b))
+
+ # change endpoint
+ if is_ip6:
+ peer_1.change_endpoint(self.pg1.remote_hosts[1].ip6, port + 100)
+ else:
+ peer_1.change_endpoint(self.pg1.remote_hosts[1].ip4, port + 100)
+
+ # prepare and send a data packet
+ # expect endpoint change
+ if is_ip6:
+ ip_header = IPv6(src="1::3:1", dst=self.pg0.remote_ip6, hlim=20)
+ else:
+ ip_header = IP(src="10.11.3.1", dst=self.pg0.remote_ip4, ttl=20)
+ data = (
+ peer_1.mk_tunnel_header(self.pg1, is_ip6=is_ip6)
+ / Wireguard(message_type=4, reserved_zero=0)
+ / WireguardTransport(
+ receiver_index=peer_1.sender,
+ counter=0,
+ encrypted_encapsulated_packet=peer_1.encrypt_transport(
+ ip_header / UDP(sport=222, dport=223) / Raw()
+ ),
+ )
+ )
+ rxs = self.send_and_expect(self.pg1, [data], self.pg0)
+ if is_ip6:
+ self.assertEqual(rxs[0][IPv6].dst, self.pg0.remote_ip6)
+ self.assertEqual(rxs[0][IPv6].hlim, 19)
+ else:
+ self.assertEqual(rxs[0][IP].dst, self.pg0.remote_ip4)
+ self.assertEqual(rxs[0][IP].ttl, 19)
+ self.assertTrue(peer_1.query_vpp_config())
+
+ # prepare and send a packet that will be rewritten into the wg interface
+ # expect a data packet sent to the new endpoint
+ if is_ip6:
+ ip_header = IPv6(src=self.pg0.remote_ip6, dst="1::3:2")
+ else:
+ ip_header = IP(src=self.pg0.remote_ip4, dst="10.11.3.2")
+ p = (
+ Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+ / ip_header
+ / 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, is_ip6=is_ip6)
+
+ # remove configs
+ r1.remove_vpp_config()
+ peer_1.remove_vpp_config()
+ wg0.remove_vpp_config()
+
+ def test_wg_peer_roaming_on_data_v4_sync(self):
+ """Peer roaming on data packet (v4, sync)"""
+ self._test_wg_peer_roaming_on_data_tmpl(is_async=False, is_ip6=False)
+
+ def test_wg_peer_roaming_on_data_v6_sync(self):
+ """Peer roaming on data packet (v6, sync)"""
+ self._test_wg_peer_roaming_on_data_tmpl(is_async=False, is_ip6=True)
+
+ def test_wg_peer_roaming_on_data_v4_async(self):
+ """Peer roaming on data packet (v4, async)"""
+ self._test_wg_peer_roaming_on_data_tmpl(is_async=True, is_ip6=False)
+
+ def test_wg_peer_roaming_on_data_v6_async(self):
+ """Peer roaming on data packet (v6, async)"""
+ self._test_wg_peer_roaming_on_data_tmpl(is_async=True, is_ip6=True)
+
def test_wg_peer_resp(self):
"""Send handshake response"""
port = 12323
for rx in rxs:
rx = IP(peer_1.decrypt_transport(rx))
- # chech the oringial packet is present
+ # check the original packet is present
self.assertEqual(rx[IP].dst, p[IP].dst)
self.assertEqual(rx[IP].ttl, p[IP].ttl - 1)
for rx in rxs:
rx = IPv6(peer_1.decrypt_transport(rx, True))
- # chech the oringial packet is present
+ # check the original packet is present
self.assertEqual(rx[IPv6].dst, p[IPv6].dst)
self.assertEqual(rx[IPv6].hlim, p[IPv6].hlim - 1)
for rx in rxs:
rx = IPv6(peer_1.decrypt_transport(rx))
- # chech the oringial packet is present
+ # check the original packet is present
self.assertEqual(rx[IPv6].dst, p[IPv6].dst)
self.assertEqual(rx[IPv6].hlim, p[IPv6].hlim - 1)
for rx in rxs:
rx = IP(peer_1.decrypt_transport(rx, True))
- # chech the oringial packet is present
+ # check the original packet is present
self.assertEqual(rx[IP].dst, p[IP].dst)
self.assertEqual(rx[IP].ttl, p[IP].ttl - 1)
Code Review / vpp.git / commitdiff