lib: expose comparision function to allow a typesafe conversion

The interface hash comparison function is needed in eigrpd.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

2 files changed, 3 insertions, 3 deletions

diff --git a/lib/if.c b/lib/if.c
index 68724a65e9..43e3363b34 100644
--- a/lib/if.c
+++ b/lib/if.c
@@ -44,7 +44,6 @@ static void if_set_name(struct interface *ifp, const char *name);
 static struct interface *if_lookup_by_ifindex(ifindex_t ifindex,
 					      vrf_id_t vrf_id);
 static struct interface *if_lookup_by_index_all_vrf(ifindex_t ifindex);
-static int if_cmp_func(const struct interface *, const struct interface *);
 static int if_cmp_index_func(const struct interface *ifp1,
 			     const struct interface *ifp2);
 RB_GENERATE(if_name_head, interface, name_entry, if_cmp_func);
@@ -136,8 +135,7 @@ int if_cmp_name_func(const char *p1, const char *p2)
 	return 0;
 }
 
-static int if_cmp_func(const struct interface *ifp1,
-		       const struct interface *ifp2)
+int if_cmp_func(const struct interface *ifp1, const struct interface *ifp2)
 {
 	return if_cmp_name_func(ifp1->name, ifp2->name);
 }
diff --git a/lib/if.h b/lib/if.h
index 897f2be239..fce6705c23 100644
--- a/lib/if.h
+++ b/lib/if.h
@@ -309,6 +309,8 @@ struct interface {
 	QOBJ_FIELDS;
 };
 
+extern int if_cmp_func(const struct interface *a, const struct interface *b);
+
 RB_HEAD(if_name_head, interface);
 RB_PROTOTYPE(if_name_head, interface, name_entry, if_cmp_func)
 RB_HEAD(if_index_head, interface);