FIB2.0: memory leaks during load-balance update (VPP-475)

some other fixes and enhancemets to address failures in the IPv6 Scale testing:
 - The rate at which VPP sends ARP/ND requests, 1 per-millisecond, is too high. This is reduced to 1 every 10 ms. probably still too high.
 - If an ARP/ND response is received that does not contain a change to the known MAC address, no further processing is done.
 - Added stats to get info about the async FIB walks.
 - When walking FIB entries and performing a load-balance update, it is not necessary to re-insert the LB in the forwarding table.

Change-Id: Ifd47e4bdbce94495f44aaf1b78e7d1395ed870d1
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 28 insertions, 5 deletions

diff --git a/vnet/vnet/fib/fib_path.c b/vnet/vnet/fib/fib_path.c
index 1b82f46482e..bea17218547 100644
--- a/vnet/vnet/fib/fib_path.c
+++ b/vnet/vnet/fib/fib_path.c
@@ -1801,13 +1801,36 @@ show_fib_path_command (vlib_main_t * vm,
 			unformat_input_t * input,
 			vlib_cli_command_t * cmd)
 {
+    fib_node_index_t pi;
     fib_path_t *path;
 
-    vlib_cli_output (vm, "FIB Path Lists");
-    pool_foreach(path, fib_path_pool,
-    ({
-	vlib_cli_output (vm, "%U", format_fib_path, path);
-    }));
+    if (unformat (input, "%d", &pi))
+    {
+	/*
+	 * show one in detail
+	 */
+	if (!pool_is_free_index(fib_path_pool, pi))
+	{
+	    path = fib_path_get(pi);
+	    u8 *s = fib_path_format(pi, NULL);
+	    s = format(s, "children:");
+	    s = fib_node_children_format(path->fp_node.fn_children, s);
+	    vlib_cli_output (vm, "%s", s);
+	    vec_free(s);
+	}
+	else
+	{
+	    vlib_cli_output (vm, "path %d invalid", pi);
+	}
+    }
+    else
+    {
+	vlib_cli_output (vm, "FIB Paths");
+	pool_foreach(path, fib_path_pool,
+	({
+	    vlib_cli_output (vm, "%U", format_fib_path, path);
+	}));
+    }
 
     return (NULL);
 }