X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fvlan-bitmap.h;h=092c2ca87a00dc90e235572c4fac8cee9e2fa1eb;hb=5ea61afe521af5ed81cff32726e4cd8d49bf7d50;hp=eca42fea9cf01c63ff730134b19265bc9c30fff0;hpb=0fb7b9156ac7d319a51890630857698ad1877335;p=openvswitch

diff --git a/lib/vlan-bitmap.h b/lib/vlan-bitmap.h
index eca42fea..092c2ca8 100644
--- a/lib/vlan-bitmap.h
+++ b/lib/vlan-bitmap.h
@@ -22,19 +22,19 @@
 
 /* A "VLAN bitmap" is a 4096-bit bitmap that represents a set.  A 1-bit
  * indicates that the respective VLAN is a member of the set, a 0-bit indicates
- * that it is not.  There is one wrinkle: NULL indicates that every VLAN is a
- * member of the set.
+ * that it is not.  There is one wrinkle: NULL is a valid value that indicates
+ * either that all VLANs are or are not members, depending on the vlan_bitmap.
  *
  * This is empirically a useful data structure. */
 
 unsigned long *vlan_bitmap_from_array(const int64_t *vlans, size_t n_vlans);
 bool vlan_bitmap_equal(const unsigned long *a, const unsigned long *b);
 
-/* Returns true if 'vid', in the range [0,4095], is a member of 'vlans'. */
-static inline bool
-vlan_bitmap_contains(const unsigned long *vlans, uint16_t vid)
+/* Returns a new copy of 'vlans'. */
+static inline unsigned long *
+vlan_bitmap_clone(const unsigned long *vlans)
 {
-    return !vlans || bitmap_is_set(vlans, vid);
+    return vlans ? bitmap_clone(vlans, 4096) : NULL;
 }
 
 #endif /* lib/vlan-bitmap.h */