Punt: socket register for exception dispatched/punted packets based on reason

- add to the Punt API to allow different descriptions of the desired packets: UDP or exceptions
- move the punt nodes into punt_node.c
- improve tests (test that the correct packets are punted to the registered socket)

Change-Id: I1a133dec88106874993cba1f5a439cd26b2fef72
Signed-off-by: Neale Ranns <nranns@cisco.com>

2 files changed, 32 insertions, 0 deletions

diff --git a/src/vlib/punt.c b/src/vlib/punt.c
index 5f83707c11d..7c2daf25ee4 100644
--- a/src/vlib/punt.c
+++ b/src/vlib/punt.c
@@ -367,6 +367,15 @@ vlib_punt_unregister (vlib_punt_hdl_t client,
 }
 
 int
+vlib_punt_reason_validate (vlib_punt_reason_t reason)
+{
+  if (reason < punt_reason_last)
+    return (0);
+
+  return (-1);
+}
+
+int
 vlib_punt_reason_alloc (vlib_punt_hdl_t client,
 			const char *reason_name, vlib_punt_reason_t * reason)
 {
@@ -392,6 +401,17 @@ vlib_punt_reason_alloc (vlib_punt_hdl_t client,
   return (0);
 }
 
+void
+punt_reason_walk (punt_reason_walk_cb_t cb, void *ctx)
+{
+  punt_reason_data_t *pd;
+
+  vec_foreach (pd, punt_reason_data)
+  {
+    cb (pd->pd_reason, pd->pd_name, ctx);
+  }
+}
+
 /* Parse node name -> node index. */
 uword
 unformat_punt_client (unformat_input_t * input, va_list * args)
diff --git a/src/vlib/punt.h b/src/vlib/punt.h
index adb25f91a5e..7a3e5da2da6 100644
--- a/src/vlib/punt.h
+++ b/src/vlib/punt.h
@@ -28,6 +28,13 @@ typedef enum vlib_punt_reason_t_
   PUNT_N_REASONS,
 } vlib_punt_reason_t;
 
+/**
+ * Walk each punt reason
+ */
+typedef int (*punt_reason_walk_cb_t) (vlib_punt_reason_t id,
+				      const u8 * name, void *ctx);
+
+extern void punt_reason_walk (punt_reason_walk_cb_t cb, void *cxt);
 
 /**
  * @brief Format a punt reason
@@ -57,6 +64,11 @@ extern int vlib_punt_reason_alloc (vlib_punt_hdl_t client,
 				   vlib_punt_reason_t * reason);
 
 /**
+ * Validate that a punt reason is assigned
+ */
+extern int vlib_punt_reason_validate (vlib_punt_reason_t reason);
+
+/**
  * @brief Register a node to receive particular punted buffers
  *
  * @paran client - The registered client registering for the packets