pim6d: support embedded-rp

Implement embedded RP support and configuration commands.

Embedded RP is disabled by default and can be globally enabled with the
command `embedded-rp` in the PIMv6 configuration node.

It supports the following options:
- Embedded RP maximum limit
- Embedded RP group filtering

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/pimd/pim_instance.h b/pimd/pim_instance.h
index f484d847b2..387926c907 100644
--- a/pimd/pim_instance.h
+++ b/pimd/pim_instance.h
@@ -191,6 +191,22 @@ struct pim_instance {
 	int64_t last_route_change_time;
 
 	uint64_t gm_rx_drop_sys;
+
+#if PIM_IPV == 6
+	struct {
+		/** Embedded RP enable state. */
+		bool enable;
+		/** Embedded RP group prefix list. */
+		char *group_list;
+		/** Maximum allowed number of embedded RPs at a time. */
+		uint32_t maximum_rps;
+
+		/** Embedded RP routing table */
+		struct route_table *table;
+		/** Embedded RPs count */
+		size_t rp_count;
+	} embedded_rp;
+#endif /* PIM_IPV == 6 */
 };
 
 void pim_vrf_init(void);