zebra: add new flag to detect nexthop label updates

With the introduction of the pseudowire manager, the NHT tracking code
needs to detect label updates as well.

Create a specific nexthop flag for that. We can't reuse the
RIB_ENTRY_NEXTHOPS_CHANGED flag for this porpose because this flag is
always cleared and reevaluated in rib_process(), setting it outside that
function is a nop.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/zebra/rib.h b/zebra/rib.h
index 5381d76b98..e910facb44 100644
--- a/zebra/rib.h
+++ b/zebra/rib.h
@@ -91,6 +91,7 @@ struct rib
 #define RIB_ENTRY_NEXTHOPS_CHANGED 0x2
 #define RIB_ENTRY_CHANGED          0x4
 #define RIB_ENTRY_SELECTED_FIB     0x8
+#define RIB_ENTRY_LABELS_CHANGED   0x10
 
   /* Nexthop information. */
   u_char nexthop_num;