From 124d5e02b31c47a78dba709699408b4e9d9e29f5 Mon Sep 17 00:00:00 2001
From: Artem Glazychev <artem.glazychev@xored.com>
Date: Wed, 30 Sep 2020 01:07:46 +0700
Subject: wireguard: fix udp-port registration

Type: fix

Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
Change-Id: I698ef299316004b797da1e74b64d067caac4bd2d
---
 src/plugins/wireguard/wireguard_if.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/plugins/wireguard/wireguard_if.c')

diff --git a/src/plugins/wireguard/wireguard_if.c b/src/plugins/wireguard/wireguard_if.c
index 46abdf6eb4d..3c59407e3b7 100644
--- a/src/plugins/wireguard/wireguard_if.c
+++ b/src/plugins/wireguard/wireguard_if.c
@@ -250,6 +250,13 @@ wg_if_create (u32 user_instance,
 
   *sw_if_indexp = (u32) ~ 0;
 
+  /*
+   * Check if the required port is already in use
+   */
+  udp_dst_port_info_t *pi = udp_get_dst_port_info (&udp_main, port, UDP_IP4);
+  if (pi)
+    return VNET_API_ERROR_UDP_PORT_TAKEN;
+
   /*
    * Allocate a wg_if instance. Either select on dynamically
    * or try to use the desired user_instance number.
-- 
cgit 1.2.3-korg