adj_index_t *adj_index;
vec_foreach (adj_index, peer->adj_indices)
{
- if (INDEX_INVALID != *adj_index)
- {
- wg_peer_by_adj_index[*adj_index] = INDEX_INVALID;
- }
+ wg_peer_by_adj_index[*adj_index] = INDEX_INVALID;
+
+ if (adj_is_valid (*adj_index))
+ adj_midchain_delegate_unstack (*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;
+ peer->handshake_is_sent = false;
+ vec_free (peer->rewrite);
vec_free (peer->allowed_ips);
vec_free (peer->adj_indices);
}
wg_peer_clear (vm, peer);
}
-static u8 *
-wg_peer_build_rewrite (const wg_peer_t *peer, u8 is_ip4)
-{
- u8 *rewrite = NULL;
- if (is_ip4)
- {
- ip4_udp_header_t *hdr;
-
- vec_validate (rewrite, sizeof (*hdr) - 1);
- hdr = (ip4_udp_header_t *) rewrite;
-
- hdr->ip4.ip_version_and_header_length = 0x45;
- hdr->ip4.ttl = 64;
- hdr->ip4.src_address = peer->src.addr.ip4;
- hdr->ip4.dst_address = peer->dst.addr.ip4;
- hdr->ip4.protocol = IP_PROTOCOL_UDP;
- hdr->ip4.checksum = ip4_header_checksum (&hdr->ip4);
-
- hdr->udp.src_port = clib_host_to_net_u16 (peer->src.port);
- hdr->udp.dst_port = clib_host_to_net_u16 (peer->dst.port);
- hdr->udp.checksum = 0;
- }
- else
- {
- ip6_udp_header_t *hdr;
-
- vec_validate (rewrite, sizeof (*hdr) - 1);
- hdr = (ip6_udp_header_t *) rewrite;
-
- hdr->ip6.ip_version_traffic_class_and_flow_label = 0x60;
- ip6_address_copy (&hdr->ip6.src_address, &peer->src.addr.ip6);
- ip6_address_copy (&hdr->ip6.dst_address, &peer->dst.addr.ip6);
- hdr->ip6.protocol = IP_PROTOCOL_UDP;
- hdr->ip6.hop_limit = 64;
-
- hdr->udp.src_port = clib_host_to_net_u16 (peer->src.port);
- hdr->udp.dst_port = clib_host_to_net_u16 (peer->dst.port);
- hdr->udp.checksum = 0;
- }
-
- return (rewrite);
-}
-
static void
wg_peer_adj_stack (wg_peer_t *peer, adj_index_t ai)
{
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);
}
}
}
+static void
+wg_peer_adj_reset_stacking (adj_index_t ai)
+{
+ adj_midchain_delegate_remove (ai);
+}
+
static void
wg_peer_66_fixup (vlib_main_t *vm, const ip_adjacency_t *adj, vlib_buffer_t *b,
const void *data)
return (NULL);
}
+static void
+wg_peer_disable (vlib_main_t *vm, wg_peer_t *peer)
+{
+ index_t peeri = peer - wg_peer_pool;
+
+ wg_timers_stop (peer);
+ wg_peer_update_flags (peeri, WG_PEER_ESTABLISHED, false);
+
+ for (int i = 0; i < WG_N_TIMERS; i++)
+ {
+ peer->timers[i] = ~0;
+ peer->timers_dispatched[i] = 0;
+ }
+ peer->timer_handshake_attempts = 0;
+
+ peer->last_sent_handshake = vlib_time_now (vm) - (REKEY_TIMEOUT + 1);
+ peer->last_sent_packet = 0;
+ peer->last_received_packet = 0;
+ peer->session_derived = 0;
+ peer->rehandshake_started = 0;
+
+ peer->new_handshake_interval_tick = 0;
+ peer->rehandshake_interval_tick = 0;
+
+ peer->timer_need_another_keepalive = false;
+
+ noise_remote_clear (vm, &peer->remote);
+}
+
+static void
+wg_peer_enable (vlib_main_t *vm, wg_peer_t *peer)
+{
+ index_t peeri = peer - wg_peer_pool;
+ wg_if_t *wg_if;
+ u8 public_key[NOISE_PUBLIC_KEY_LEN];
+
+ wg_if = wg_if_get (wg_if_find_by_sw_if_index (peer->wg_sw_if_index));
+ clib_memcpy (public_key, peer->remote.r_public, NOISE_PUBLIC_KEY_LEN);
+
+ noise_remote_init (vm, &peer->remote, peeri, public_key, wg_if->local_idx);
+
+ wg_timers_send_first_handshake (peer);
+}
+
walk_rc_t
wg_peer_if_admin_state_change (index_t peeri, void *data)
{
wg_peer_t *peer;
adj_index_t *adj_index;
+ vlib_main_t *vm = vlib_get_main ();
+
peer = wg_peer_get (peeri);
vec_foreach (adj_index, peer->adj_indices)
{
wg_peer_adj_stack (peer, *adj_index);
}
+
+ if (vnet_sw_interface_is_admin_up (vnet_get_main (), peer->wg_sw_if_index))
+ {
+ wg_peer_enable (vm, peer);
+ }
+ else
+ {
+ wg_peer_disable (vm, peer);
+ }
+
return (WALK_CONTINUE);
}
&adj->sub_type.nbr.next_hop))
{
vec_add1 (peer->adj_indices, *adj_index);
+
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,
peer->src.port = wgi->port;
u8 is_ip4 = ip46_address_is_ip4 (&peer->dst.addr);
- peer->rewrite = wg_peer_build_rewrite (peer, is_ip4);
+ peer->rewrite = wg_build_rewrite (&peer->src.addr, peer->src.port,
+ &peer->dst.addr, peer->dst.port, is_ip4);
u32 ii;
vec_validate (peer->allowed_ips, vec_len (allowed_ips) - 1);
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);
+
+ adj_index_t *adj_index;
+ vec_foreach (adj_index, peer->adj_indices)
+ {
+ if (adj_is_valid (*adj_index))
+ {
+ adj_midchain_fixup_t 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_reset_stacking (*adj_index);
+ wg_peer_adj_stack (peer, *adj_index);
+ }
+ }
+}
+
+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);
return (rv);
}
- noise_remote_init (&peer->remote, peer - wg_peer_pool, public_key,
+ noise_remote_init (vm, &peer->remote, peer - wg_peer_pool, public_key,
wg_if->local_idx);
cookie_maker_init (&peer->cookie_maker, public_key);
- wg_send_handshake (vm, peer, false);
- if (peer->persistent_keepalive_interval != 0)
+ if (vnet_sw_interface_is_admin_up (vnet_get_main (), tun_sw_if_index))
{
- wg_send_keepalive (vm, peer);
+ wg_timers_send_first_handshake (peer);
}
*peer_index = peer - wg_peer_pool;
Code Review / vpp.git / blobdiff