+/**
+ * Permit access for a range of IP addresses.
+ *
+ * \param addr The address to permit.
+ * \param netmask The netmask of the entry to be permitted.
+ * \param acl The access control list.
+ * \param default_deny Whether \a acl is a whitelist.
+ */
+void acl_allow(char *addr, int netmask,
+ struct list_head *acl, int default_deny)
+{
+ if (default_deny)
+ acl_add_entry(acl, addr, netmask);
+ else
+ acl_del_entry(acl, addr, netmask);
+}
+
+/**
+ * Deny access for a range of IP addresses.
+ *
+ * \param addr The address to deny.
+ * \param netmask The netmask of the entry to be denied.
+ * \param acl The access control list.
+ * \param default_deny Whether \a acl is a whitelist.
+ */
+void acl_deny(char *addr, int netmask,
+ struct list_head *acl, int default_deny)
+{
+ acl_allow(addr, netmask, acl, !default_deny);
+}