zebra: Comment to indicate where nhg hashtables live

Add a comment to the header of `zebra_nhg.c` to point the reader
to where the hashtables containing the nhg entries are held.

Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>

diff --git a/zebra/zebra_nhg.h b/zebra/zebra_nhg.h
index 812d9a1a90e8eacc031a6e66f759c2d31504ce7c..d3c63cff3035b42779c46156b2951ef2b2f03909 100644 (file)
--- a/zebra/zebra_nhg.h
+++ b/zebra/zebra_nhg.h
@@ -41,6 +41,11 @@ struct nh_grp {
 
 PREDECL_RBTREE_UNIQ(nhg_connected_tree);
 
+
+/*
+ * Hashtables contiaining entries found in `zebra_router`.
+ */
+
 struct nhg_hash_entry {
        uint32_t id;
        afi_t afi;