IPSEC: no second lookup after tunnel encap

[vpp.git] / src / vnet / ipsec / ipsec_if_in.c

diff --git a/src/vnet/ipsec/ipsec_if_in.c b/src/vnet/ipsec/ipsec_if_in.c
index 1dbd127..833f848 100644 (file)
--- a/src/vnet/ipsec/ipsec_if_in.c
+++ b/src/vnet/ipsec/ipsec_if_in.c
@@ -25,7 +25,8 @@
 /* Statistics (not really errors) */
 #define foreach_ipsec_if_input_error                             \
 _(RX, "good packets received")                                   \
-_(DISABLED, "ipsec packets received on disabled interface")
+_(DISABLED, "ipsec packets received on disabled interface")       \
+_(NO_TUNNEL, "no matching tunnel")
 
 static char *ipsec_if_input_error_strings[] = {
 #define _(sym,string) string,
@@ -76,7 +77,7 @@ VLIB_NODE_FN (ipsec_if_input_node) (vlib_main_t * vm,
   ipsec_sa_t *sa0;
   vlib_combined_counter_main_t *rx_counter;
   vlib_combined_counter_main_t *drop_counter;
-  u32 n_disabled = 0;
+  u32 n_disabled = 0, n_no_tunnel = 0;
 
   rx_counter = vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX;
   drop_counter = vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_DROP;
@@ -181,6 +182,11 @@ VLIB_NODE_FN (ipsec_if_input_node) (vlib_main_t * vm,
              vlib_buffer_advance (b0, ip4_header_bytes (ip0));
              next0 = im->esp4_decrypt_next_index;
            }
+         else
+           {
+             b0->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL];
+             n_no_tunnel++;
+           }
 
        trace:
          if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
@@ -216,6 +222,8 @@ VLIB_NODE_FN (ipsec_if_input_node) (vlib_main_t * vm,
 
   vlib_node_increment_counter (vm, ipsec_if_input_node.index,
                               IPSEC_IF_INPUT_ERROR_DISABLED, n_disabled);
+  vlib_node_increment_counter (vm, ipsec_if_input_node.index,
+                              IPSEC_IF_INPUT_ERROR_DISABLED, n_no_tunnel);
 
   return from_frame->n_vectors;
 }