session: re-set tx fifo event if out of buffers

[vpp.git] / src / vnet / session / session_node.c

diff --git a/src/vnet/session/session_node.c b/src/vnet/session/session_node.c
index 865c8b7..e1114b7 100644 (file)
--- a/src/vnet/session/session_node.c
+++ b/src/vnet/session/session_node.c
@@ -903,7 +903,8 @@ session_tx_fifo_read_and_snd_i (session_worker_t * wrk,
     {
       if (n_bufs)
        vlib_buffer_free (vm, wrk->tx_buffers, n_bufs);
-      session_evt_add_head_old (wrk, elt);
+      if (svm_fifo_set_event (ctx->s->tx_fifo))
+       session_evt_add_head_old (wrk, elt);
       vlib_node_increment_counter (wrk->vm, node->node_index,
                                   SESSION_QUEUE_ERROR_NO_BUFFER, 1);
       return SESSION_TX_NO_BUFFERS;