net sched actions: add new tc_action_ops callback

Add a new callback in tc_action_ops, it will be needed by the tc actions
to compute its size when a ADD/DELETE notification message is constructed.
This routine has to take into account optional/variable size TLVs specific
per action.

Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/act_api.h b/include/net/act_api.h
index 88c1f99..e0a9c20 100644 (file)
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -97,6 +97,7 @@ struct tc_action_ops {
                        const struct tc_action_ops *,
                        struct netlink_ext_ack *);
        void    (*stats_update)(struct tc_action *, u64, u32, u64);
+       size_t  (*get_fill_size)(const struct tc_action *act);
        struct net_device *(*get_dev)(const struct tc_action *a);
 };