api: refactor vlibmemory

- separate client/server code for both memory and socket apis
- separate memory api code from generic vlib api code
- move unix_shared_memory_fifo to svm and rename to svm_fifo_t
- overall declutter

Change-Id: I90cdd98ff74d0787d58825b914b0f1eafcfa4dc2
Signed-off-by: Florin Coras <fcoras@cisco.com>

2 files changed, 60 insertions, 0 deletions

diff --git a/src/vlib/node.c b/src/vlib/node.c
index e6739dc7cf9..17dd2ea87d4 100644
--- a/src/vlib/node.c
+++ b/src/vlib/node.c
@@ -543,6 +543,60 @@ vlib_register_all_static_nodes (vlib_main_t * vm)
     }
 }
 
+vlib_node_t ***
+vlib_node_get_nodes (vlib_main_t * vm, u32 max_threads, int include_stats)
+{
+  vlib_node_main_t *nm = &vm->node_main;
+  vlib_node_t *n;
+  static vlib_node_t ***node_dups;
+  vlib_node_t **nodes;
+  static vlib_main_t **stat_vms;
+  vlib_main_t *stat_vm;
+  uword i, j;
+  u32 threads_to_serialize;
+
+  vec_reset_length (node_dups);
+
+  if (vec_len (stat_vms) == 0)
+    {
+      for (i = 0; i < vec_len (vlib_mains); i++)
+	{
+	  stat_vm = vlib_mains[i];
+	  if (stat_vm)
+	    vec_add1 (stat_vms, stat_vm);
+	}
+    }
+
+  threads_to_serialize = clib_min (max_threads, vec_len (stat_vms));
+
+  /*
+   * Barrier sync across stats scraping.
+   * Otherwise, the counts will be grossly inaccurate.
+   */
+  vlib_worker_thread_barrier_sync (vm);
+
+  for (j = 0; j < threads_to_serialize; j++)
+    {
+      stat_vm = stat_vms[j];
+      nm = &stat_vm->node_main;
+
+      if (include_stats)
+	{
+	  for (i = 0; i < vec_len (nm->nodes); i++)
+	    {
+	      n = nm->nodes[i];
+	      vlib_node_sync_stats (stat_vm, n);
+	    }
+	}
+
+      nodes = vec_dup (nm->nodes);
+      vec_add1 (node_dups, nodes);
+    }
+  vlib_worker_thread_barrier_release (vm);
+
+  return node_dups;
+}
+
 clib_error_t *
 vlib_node_main_init (vlib_main_t * vm)
 {
diff --git a/src/vlib/node_funcs.h b/src/vlib/node_funcs.h
index 0734476cb8f..6607d31f67e 100644
--- a/src/vlib/node_funcs.h
+++ b/src/vlib/node_funcs.h
@@ -1122,6 +1122,12 @@ vlib_node_add_named_next (vlib_main_t * vm, uword node, char *name)
   return vlib_node_add_named_next_with_slot (vm, node, name, ~0);
 }
 
+/**
+ * Get list of nodes
+ */
+vlib_node_t ***vlib_node_get_nodes (vlib_main_t * vm, u32 max_threads,
+				    int include_stats);
+
 /* Query node given name. */
 vlib_node_t *vlib_get_node_by_name (vlib_main_t * vm, u8 * name);