+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+
+ if (PREDICT_FALSE (n_trace))
+ {
+ nsim_tx_trace_t *t0;
+ vlib_trace_buffer (vm, node, next_index, b0,
+ 0 /* follow_chain */ );
+ t0 = vlib_add_trace (vm, node, b0, sizeof (*t0));
+ t0->expired = ep->tx_time;
+ t0->tx_sw_if_index = ep->tx_sw_if_index;
+ }
+