misc: classifier-based packet trace filter

[vpp.git] / src / vnet / interface_output.c

diff --git a/src/vnet/interface_output.c b/src/vnet/interface_output.c
index f51e9a1..1506db9 100644 (file)
--- a/src/vnet/interface_output.c
+++ b/src/vnet/interface_output.c
@@ -43,6 +43,7 @@
 #include <vnet/ip/ip6.h>
 #include <vnet/udp/udp_packet.h>
 #include <vnet/feature/feature.h>
+#include <vnet/classify/trace_classify.h>
 
 typedef struct
 {
@@ -813,13 +814,29 @@ static_always_inline void vnet_interface_pcap_tx_trace
   else
     sw_if_index = ~0;
 
+  vnet_main_t *vnm = vnet_get_main ();
   n_left_from = frame->n_vectors;
   from = vlib_frame_vector_args (frame);
 
   while (n_left_from > 0)
     {
+      int classify_filter_result;
       u32 bi0 = from[0];
       vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0);
+      from++;
+      n_left_from--;
+
+      if (vec_len (vnm->classify_filter_table_indices))
+       {
+         classify_filter_result =
+           vnet_is_packet_traced_inline
+           (b0, vnm->classify_filter_table_indices[0],
+            0 /* full classify */ );
+         if (classify_filter_result)
+           pcap_add_buffer (&vlib_global_main.pcap[VLIB_TX].pcap_main, vm,
+                            bi0, 512);
+         continue;
+       }
 
       if (sw_if_index_from_buffer)
        sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
@@ -828,8 +845,6 @@ static_always_inline void vnet_interface_pcap_tx_trace
          vlib_global_main.pcap[VLIB_TX].pcap_sw_if_index == sw_if_index)
        pcap_add_buffer (&vlib_global_main.pcap[VLIB_TX].pcap_main, vm, bi0,
                         512);
-      from++;
-      n_left_from--;
     }
 }