tcp: cubic as default cc algorithm

[vpp.git] / src / vnet / tcp / tcp.c

diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index b1ae374..df3d61d 100644 (file)
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -186,7 +186,7 @@ tcp_session_get_listener (u32 listener_index)
  *
  */
 static void
-tcp_half_open_connection_del (tcp_connection_t * tc)
+tcp_half_open_connection_free (tcp_connection_t * tc)
 {
   tcp_main_t *tm = vnet_get_tcp_main ();
   clib_spinlock_lock_if_init (&tm->half_open_lock);
@@ -214,9 +214,10 @@ tcp_half_open_connection_cleanup (tcp_connection_t * tc)
   if (tc->c_thread_index != vlib_get_thread_index ())
     return 1;
 
+  session_half_open_delete_notify (TRANSPORT_PROTO_TCP, tc->c_s_ho_handle);
   wrk = tcp_get_worker (tc->c_thread_index);
   tcp_timer_reset (&wrk->timer_wheel, tc, TCP_TIMER_RETRANSMIT_SYN);
-  tcp_half_open_connection_del (tc);
+  tcp_half_open_connection_free (tc);
   return 0;
 }
 
@@ -443,6 +444,18 @@ tcp_session_cleanup (u32 conn_index, u32 thread_index)
   tcp_connection_cleanup (tc);
 }
 
+static void
+tcp_session_cleanup_ho (u32 conn_index)
+{
+  tcp_worker_ctx_t *wrk;
+  tcp_connection_t *tc;
+
+  tc = tcp_half_open_connection_get (conn_index);
+  wrk = tcp_get_worker (tc->c_thread_index);
+  tcp_timer_reset (&wrk->timer_wheel, tc, TCP_TIMER_RETRANSMIT_SYN);
+  tcp_half_open_connection_free (tc);
+}
+
 static void
 tcp_session_reset (u32 conn_index, u32 thread_index)
 {
@@ -764,7 +777,20 @@ 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
@@ -1135,6 +1161,7 @@ const static transport_proto_vft_t tcp_proto = {
   .connect = tcp_session_open,
   .close = tcp_session_close,
   .cleanup = tcp_session_cleanup,
+  .cleanup_ho = tcp_session_cleanup_ho,
   .reset = tcp_session_reset,
   .send_params = tcp_session_send_params,
   .update_time = tcp_update_time,
@@ -1394,7 +1421,7 @@ tcp_configuration_init (void)
   tcp_cfg.enable_tx_pacing = 1;
   tcp_cfg.allow_tso = 0;
   tcp_cfg.csum_offload = 1;
-  tcp_cfg.cc_algo = TCP_CC_NEWRENO;
+  tcp_cfg.cc_algo = TCP_CC_CUBIC;
   tcp_cfg.rwnd_min_update_ack = 1;
 
   /* Time constants defined as timer tick (100ms) multiples */