tcp: avoid sending acks when data available

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

diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index 22222fb..10f96fa 100755 (executable)
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -1681,6 +1681,7 @@ tcp_rcv_fin (tcp_worker_ctx_t * wrk, tcp_connection_t * tc, vlib_buffer_t * b,
 
   /* Account for the FIN and send ack */
   tc->rcv_nxt += 1;
+  tc->flags |= TCP_CONN_FINRCVD;
   tcp_program_ack (tc);
   /* Enter CLOSE-WAIT and notify session. To avoid lingering
    * in CLOSE-WAIT, set timer (reuse WAITCLOSE). */
@@ -2593,7 +2594,9 @@ tcp46_syn_sent_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
        }
       else
        {
-         tcp_program_ack (new_tc0);
+         /* Send ack now instead of programming it because connection was
+          * just established and it's not optional. */
+         tcp_send_ack (new_tc0);
        }
 
     drop: