mdata: buffer metadata change tracker plugin

A handy tool in case you need to know which metadata will be changed
when a packet visits a certain node.

Reflect metadata changes into format functions used by the
vpp-specific wireshark dissector.

Type: feature

Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I96fe8a24db4082bb29fe2a33cc522e8616a3a1bb

1 files changed, 11 insertions, 8 deletions

diff --git a/src/vlib/main.c b/src/vlib/main.c
index 90ce53de5a0..4223474367e 100644
--- a/src/vlib/main.c
+++ b/src/vlib/main.c
@@ -1004,14 +1004,17 @@ format_buffer_metadata (u8 * s, va_list * args)
   s = format (s, "flags: %U\n", format_vnet_buffer_flags, b);
   s = format (s, "current_data: %d, current_length: %d\n",
 	      (i32) (b->current_data), (i32) (b->current_length));
-  s = format (s, "current_config_index: %d, flow_id: %x, next_buffer: %x\n",
-	      b->current_config_index, b->flow_id, b->next_buffer);
-  s = format (s, "error: %d, ref_count: %d, buffer_pool_index: %d\n",
-	      (u32) (b->error), (u32) (b->ref_count),
-	      (u32) (b->buffer_pool_index));
-  s = format (s,
-	      "trace_handle: 0x%x, len_not_first_buf: %d\n",
-	      b->trace_handle, b->total_length_not_including_first_buffer);
+  s = format
+    (s,
+     "current_config_index/punt_reason: %d, flow_id: %x, next_buffer: %x\n",
+     b->current_config_index, b->flow_id, b->next_buffer);
+  s =
+    format (s, "error: %d, ref_count: %d, buffer_pool_index: %d\n",
+	    (u32) (b->error), (u32) (b->ref_count),
+	    (u32) (b->buffer_pool_index));
+  s =
+    format (s, "trace_handle: 0x%x, len_not_first_buf: %d\n", b->trace_handle,
+	    b->total_length_not_including_first_buffer);
   return s;
 }