tcp: fix fin_wait_1 condition to send fin

[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 dc8fffe..32de369 100644 (file)
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -2645,7 +2645,7 @@ tcp46_rcv_process_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
 {
   u32 thread_index = vm->thread_index, errors = 0, *first_buffer;
   tcp_worker_ctx_t *wrk = tcp_get_worker (thread_index);
-  u32 n_left_from, *from;
+  u32 n_left_from, *from, max_dequeue;
 
   from = first_buffer = vlib_frame_vector_args (from_frame);
   n_left_from = from_frame->n_vectors;
@@ -2776,7 +2776,8 @@ tcp46_rcv_process_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
          if (tc0->flags & TCP_CONN_FINPNDG)
            {
              /* TX fifo finally drained */
-             if (!session_tx_fifo_max_dequeue (&tc0->connection))
+             max_dequeue = session_tx_fifo_max_dequeue (&tc0->connection);
+             if (max_dequeue <= tc0->burst_acked)
                tcp_send_fin (tc0);
            }
          /* If FIN is ACKed */