vlib: fix trace number accounting

[vpp.git] / src / plugins / dpdk / ipsec / crypto_node.c

diff --git a/src/plugins/dpdk/ipsec/crypto_node.c b/src/plugins/dpdk/ipsec/crypto_node.c
index 76e57a3..893848c 100644 (file)
--- a/src/plugins/dpdk/ipsec/crypto_node.c
+++ b/src/plugins/dpdk/ipsec/crypto_node.c
@@ -106,14 +106,16 @@ dpdk_crypto_input_trace (vlib_main_t * vm, vlib_node_runtime_t * node,
 
          b0 = vlib_get_buffer (vm, bi);
 
-         vlib_trace_buffer (vm, node, next, b0, /* follow_chain */ 0);
+         if (PREDICT_TRUE
+             (vlib_trace_buffer (vm, node, next, b0, /* follow_chain */ 0)))
+           {
+             dpdk_crypto_input_trace_t *tr =
+               vlib_add_trace (vm, node, b0, sizeof (*tr));
+             tr->dev_id = dev_id;
+             tr->next_index = next;
+             n_trace--;
+           }
 
-         dpdk_crypto_input_trace_t *tr =
-           vlib_add_trace (vm, node, b0, sizeof (*tr));
-         tr->dev_id = dev_id;
-         tr->next_index = next;
-
-         n_trace--;
          n_left--;
          nexts++;
          bis++;