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, 8 insertions, 0 deletions

diff --git a/src/vnet/dpo/load_balance.h b/src/vnet/dpo/load_balance.h
index 1799653628d..b901c5beb84 100644
--- a/src/vnet/dpo/load_balance.h
+++ b/src/vnet/dpo/load_balance.h
@@ -36,6 +36,7 @@
 #include <vnet/ip/lookup.h>
 #include <vnet/dpo/dpo.h>
 #include <vnet/fib/fib_types.h>
+#include <vnet/fib/fib_entry.h>
 
 /**
  * Load-balance main
@@ -99,6 +100,11 @@ typedef struct load_balance_t_ {
     dpo_proto_t lb_proto;
 
     /**
+     * Flags from the load-balance's associated fib_entry_t
+     */
+    fib_entry_flag_t lb_fib_entry_flags;
+
+    /**
      * The number of locks, which is approximately the number of users,
      * of this load-balance.
      * Load-balance objects of via-entries are heavily shared by recursives,
@@ -167,6 +173,8 @@ extern void load_balance_set_bucket(index_t lbi,
 				    const dpo_id_t *next);
 extern void load_balance_set_urpf(index_t lbi,
 				  index_t urpf);
+extern void load_balance_set_fib_entry_flags(index_t lbi,
+                                             fib_entry_flag_t flags);
 extern index_t load_balance_get_urpf(index_t lbi);
 
 extern u8* format_load_balance(u8 * s, va_list * args);