X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Ftcp%2Ftcp.c;h=e4335e067692f062d87e2447ffd2a31dc0c8a461;hb=refs%2Fchanges%2F73%2F26473%2F4;hp=d85225b9172bc535f3164c856ccc7c795f1085c0;hpb=0765d97abef74727c040d2eaf9112865d59f1593;p=vpp.git

diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index d85225b9172..e4335e06769 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -738,10 +738,7 @@ tcp_alloc_custom_local_endpoint (tcp_main_t * tm, ip46_address_t * lcl_addr,
     }
   port = transport_alloc_local_port (TRANSPORT_PROTO_TCP, lcl_addr);
   if (port < 1)
-    {
-      clib_warning ("Failed to allocate src port");
-      return -1;
-    }
+    return SESSION_E_NOPORT;
   *lcl_port = port;
   return 0;
 }
@@ -767,7 +764,20 @@ tcp_session_open (transport_endpoint_cfg_t * rmt)
 					 rmt, &lcl_addr, &lcl_port);
 
   if (rv)
-    return -1;
+    {
+      if (rv != SESSION_E_PORTINUSE)
+	return rv;
+
+      if (session_lookup_connection (rmt->fib_index, &lcl_addr, &rmt->ip,
+				     lcl_port, rmt->port, TRANSPORT_PROTO_UDP,
+				     rmt->is_ip4))
+	return SESSION_E_PORTINUSE;
+
+      /* 5-tuple is available so increase lcl endpoint refcount and proceed
+       * with connection allocation */
+      transport_share_local_endpoint (TRANSPORT_PROTO_UDP, &lcl_addr,
+				      lcl_port);
+    }
 
   /*
    * Create connection and send SYN