fib: make mfib optional

In some cases we do not need multicast support. Making it optional helps
scaling to high number of VRFs, by reducing the control plane operations
and memory consumption.

Type: improvement

Change-Id: Ib34ed3fe2806e2f4624981da4e4a3c49c69f70be
Signed-off-by: Benoît Ganne <bganne@cisco.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/src/vnet/ip/ip_test.c b/src/vnet/ip/ip_test.c
index 727afba67f4..0d1c71063ae 100644
--- a/src/vnet/ip/ip_test.c
+++ b/src/vnet/ip/ip_test.c
@@ -464,6 +464,60 @@ api_ip_table_add_del (vat_main_t *vam)
 }
 
 static int
+api_ip_table_add_del_v2 (vat_main_t *vam)
+{
+  unformat_input_t *i = vam->input;
+  vl_api_ip_table_add_del_v2_t *mp;
+  u8 create_mfib = 1;
+  u32 table_id = ~0;
+  u8 is_ipv6 = 0;
+  u8 is_add = 1;
+  int ret = 0;
+
+  /* Parse args required to build the message */
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (i, "ipv6"))
+	is_ipv6 = 1;
+      else if (unformat (i, "del"))
+	is_add = 0;
+      else if (unformat (i, "add"))
+	is_add = 1;
+      else if (unformat (i, "table %d", &table_id))
+	;
+      else if (unformat (i, "no-mfib"))
+	create_mfib = 0;
+      else
+	{
+	  clib_warning ("parse error '%U'", format_unformat_error, i);
+	  return -99;
+	}
+    }
+
+  if (~0 == table_id)
+    {
+      errmsg ("missing table-ID");
+      return -99;
+    }
+
+  /* Construct the API message */
+  M (IP_TABLE_ADD_DEL_V2, mp);
+
+  mp->table.table_id = ntohl (table_id);
+  mp->table.is_ip6 = is_ipv6;
+  mp->is_add = is_add;
+  mp->create_mfib = create_mfib;
+
+  /* send it... */
+  S (mp);
+
+  /* Wait for a reply... */
+  W (ret);
+
+  return ret;
+}
+
+static int
 api_ip_table_replace_begin (vat_main_t *vam)
 {
   unformat_input_t *i = vam->input;