IP Multicast FIB (mfib)

 - IPv[46] mfib tables with support for (*,G/m), (*,G) and (S,G) exact and longest prefix match
 - Replication represented via a new replicate DPO.
 - RPF configuration and data-plane checking
 - data-plane signals sent to listening control planes.

The functions of multicast forwarding entries differ from their unicast conterparts, so we introduce a new mfib_table_t and mfib_entry_t objects. However, we re-use the fib_path_list to resolve and build the entry's output list. the fib_path_list provides the service to construct a replicate DPO for multicast.

'make tests' is added to with two new suites; TEST=mfib, this is invocation of the CLI command 'test mfib' which deals with many path add/remove, flag set/unset scenarios, TEST=ip-mcast, data-plane forwarding tests.

Updated applications to use the new MIFB functions;
  - IPv6 NS/RA.
  - DHCPv6
 unit tests for these are undated accordingly.

Change-Id: I49ec37b01f1b170335a5697541c8fd30e6d3a961
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/src/vnet/ip/ip.api b/src/vnet/ip/ip.api
index 5371696c..65f6e7a7 100644
--- a/src/vnet/ip/ip.api
+++ b/src/vnet/ip/ip.api
@@ -395,6 +395,41 @@ define ip_add_del_route_reply
   i32 retval;
 };
 
+/** \brief Add / del route request
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param sw_if_index - software index of the new vlan's parent interface
+    @param vrf_id - fib table /vrf associated with the route
+
+    FIXME
+*/
+define ip_mroute_add_del
+{
+  u32 client_index;
+  u32 context;
+  u32 next_hop_sw_if_index;
+  u32 table_id;
+  u32 entry_flags;
+  u32 itf_flags;
+  u16 grp_address_length;
+  u8 create_vrf_if_needed;
+  u8 is_add;
+  u8 is_ipv6;
+  u8 is_local;
+  u8 grp_address[16];
+  u8 src_address[16];
+};
+
+/** \brief Reply for add / del mroute request
+    @param context - returned sender context, to match reply w/ request
+    @param retval - return code
+*/
+define ip_mroute_add_del_reply
+{
+  u32 context;
+  i32 retval;
+};
+
 define ip_address_details
 {
   u32 client_index;
@@ -424,6 +459,24 @@ define ip_dump
   u8 is_ipv6;
 };
 
+define mfib_signal_dump
+{
+  u32 client_index;
+  u32 context;
+};
+
+define mfib_signal_details
+{
+  u32 client_index;
+  u32 context;
+  u32 sw_if_index;
+  u32 table_id;
+  u16 grp_address_len;
+  u8 grp_address[16];
+  u8 src_address[16];
+  u16 ip_packet_len;
+  u8 ip_packet_data[256];
+};
 
 /*
  * Local Variables: