X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Ftcp%2Ftcp.c;h=e4335e067692f062d87e2447ffd2a31dc0c8a461;hb=1e8d949781a44846dabbf56e1aab80bbf4cc8d59;hp=b1ae37409fd6bb5b357346bdb18d3f22ec6e0c5e;hpb=1bd2c019eba5c893d634cc496bd6d54c00020d7e;p=vpp.git

diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index b1ae37409fd..e4335e06769 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -764,7 +764,20 @@ tcp_session_open (transport_endpoint_cfg_t * rmt)
 					 rmt, &lcl_addr, &lcl_port);
 
   if (rv)
-    return rv;
+    {
+      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