link af ops: Add new ao_compare op to compare link af_data

This patch adds new operation to compare link af_data. ao_compare is similar to object oo_compare operation. This op can be used when two links are compared for their af data. It takes two link objects in question, an object specific bitmask defining which attributes should be compared and flags to control the behaviour. The function must return a bitmask with the relevant bit set for each attribute that mismatches. Signed-off-by: Roopa Prabhu <[email protected]> Signed-off-by: Thomas Graf <[email protected]>
wqlxx · Jan 12, 2013 · 09213ee · 09213ee
1 parent b1ebda9
commit 09213ee
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/include/netlink/route/link/api.h b/include/netlink/route/link/api.h
@@ -119,6 +119,19 @@ struct rtnl_link_af_ops
 	void		      (*ao_dump[NL_DUMP_MAX+1])(struct rtnl_link *,
 							struct nl_dump_params *,
 							void *);
+
+	/** Comparison function
+	 *
+	 * Will be called when two links are compared for their af data. It
+	 * takes two link objects in question, an object specific bitmask
+	 * defining which attributes should be compared and flags to control
+	 * the behaviour
+	 *
+	 * The function must return a bitmask with the relevant bit set for
+	 * each attribute that mismatches
+	 */
+	int		      (*ao_compare)(struct rtnl_link *,
+					    struct rtnl_link *, int, uint32_t, int);
 };
 
 extern struct rtnl_link_af_ops *rtnl_link_af_ops_lookup(unsigned int);