wireguard: add handshake rate limiting support

[vpp.git] / src / plugins / wireguard / wireguard_if.c

diff --git a/src/plugins/wireguard/wireguard_if.c b/src/plugins/wireguard/wireguard_if.c
index fd12347..a869df0 100644 (file)
--- a/src/plugins/wireguard/wireguard_if.c
+++ b/src/plugins/wireguard/wireguard_if.c
@@ -34,6 +34,9 @@ static index_t *wg_if_index_by_sw_if_index;
 /* vector of interfaces key'd on their UDP port (in network order) */
 index_t **wg_if_indexes_by_port;
 
+/* pool of ratelimit entries */
+static ratelimit_entry_t *wg_ratelimit_pool;
+
 static u8 *
 format_wg_if_name (u8 * s, va_list * args)
 {
@@ -287,7 +290,7 @@ wg_if_create (u32 user_instance,
       return VNET_API_ERROR_INVALID_REGISTRATION;
     }
 
-  pool_get (wg_if_pool, wg_if);
+  pool_get_zero (wg_if_pool, wg_if);
 
   /* tunnel index (or instance) */
   u32 t_idx = wg_if - wg_if_pool;
@@ -309,6 +312,7 @@ wg_if_create (u32 user_instance,
 
   wg_if->port = port;
   wg_if->local_idx = local - noise_local_pool;
+  cookie_checker_init (&wg_if->cookie_checker, wg_ratelimit_pool);
   cookie_checker_update (&wg_if->cookie_checker, local->l_public);
 
   hw_if_index = vnet_register_interface (vnm,
@@ -354,6 +358,8 @@ wg_if_delete (u32 sw_if_index)
   // Remove peers before interface deletion
   wg_if_peer_walk (wg_if, wg_peer_if_delete, NULL);
 
+  hash_free (wg_if->peers);
+
   index_t *ii;
   index_t *ifs = wg_if_indexes_get_by_port (wg_if->port);
   vec_foreach (ii, ifs)
@@ -370,6 +376,8 @@ wg_if_delete (u32 sw_if_index)
       udp_unregister_dst_port (vlib_get_main (), wg_if->port, 0);
     }
 
+  cookie_checker_deinit (&wg_if->cookie_checker);
+
   vnet_reset_interface_l3_output_node (vnm->vlib_main, sw_if_index);
   vnet_delete_hw_interface (vnm, hw->hw_if_index);
   pool_put_index (noise_local_pool, wg_if->local_idx);