nat: fix counters increment for output feature

[vpp.git] / src / plugins / nat / nat44-ei / nat44_ei_hairpinning.c

diff --git a/src/plugins/nat/nat44-ei/nat44_ei_hairpinning.c b/src/plugins/nat/nat44-ei/nat44_ei_hairpinning.c
index a049e46..c3d3cfb 100644 (file)
--- a/src/plugins/nat/nat44-ei/nat44_ei_hairpinning.c
+++ b/src/plugins/nat/nat44-ei/nat44_ei_hairpinning.c
@@ -428,7 +428,8 @@ VLIB_NODE_FN (nat44_ei_hairpin_src_node)
          vlib_buffer_t *b0;
          u32 next0;
          nat44_ei_interface_t *i;
-         u32 sw_if_index0;
+         u32 rx_sw_if_index0;
+         u32 tx_sw_if_index0;
 
          /* speculatively enqueue b0 to the current next frame */
          bi0 = from[0];
@@ -439,13 +440,14 @@ VLIB_NODE_FN (nat44_ei_hairpin_src_node)
          n_left_to_next -= 1;
 
          b0 = vlib_get_buffer (vm, bi0);
-         sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+         rx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+         tx_sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
 
          pool_foreach (i, nm->output_feature_interfaces)
            {
              /* Only packets from NAT inside interface */
              if ((nat44_ei_interface_is_inside (i)) &&
-                 (sw_if_index0 == i->sw_if_index))
+                 (rx_sw_if_index0 == i->sw_if_index))
                {
                  if (PREDICT_FALSE ((vnet_buffer (b0)->snat.flags) &
                                     NAT44_EI_FLAG_HAIRPINNING))
@@ -470,8 +472,9 @@ VLIB_NODE_FN (nat44_ei_hairpin_src_node)
 
          if (next0 != NAT44_EI_HAIRPIN_SRC_NEXT_DROP)
            {
-             vlib_increment_simple_counter (
-               &nm->counters.hairpinning, vm->thread_index, sw_if_index0, 1);
+             vlib_increment_simple_counter (&nm->counters.hairpinning,
+                                            vm->thread_index, tx_sw_if_index0,
+                                            1);
            }
 
          /* verify speculative enqueue, maybe switch current next frame */