net: sched: introduce chain_head_change callback
Add a callback that is to be called whenever head of the chain changes.
Also provide a callback for the default case when the caller gets a
block using non-extended getter.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index d15c40c..505d4b7 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -26,6 +26,8 @@ enum tcf_block_binder_type {
struct tcf_block_ext_info {
enum tcf_block_binder_type binder_type;
+ tcf_chain_head_change_t *chain_head_change;
+ void *chain_head_change_priv;
};
struct tcf_block_cb;
@@ -37,12 +39,10 @@ struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index,
void tcf_chain_put(struct tcf_chain *chain);
int tcf_block_get(struct tcf_block **p_block,
struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q);
-int tcf_block_get_ext(struct tcf_block **p_block,
- struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
struct tcf_block_ext_info *ei);
void tcf_block_put(struct tcf_block *block);
-void tcf_block_put_ext(struct tcf_block *block,
- struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
struct tcf_block_ext_info *ei);
static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
@@ -82,8 +82,7 @@ int tcf_block_get(struct tcf_block **p_block,
}
static inline
-int tcf_block_get_ext(struct tcf_block **p_block,
- struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+int tcf_block_get_ext(struct tcf_block **p_block, struct Qdisc *q,
struct tcf_block_ext_info *ei)
{
return 0;
@@ -94,8 +93,7 @@ static inline void tcf_block_put(struct tcf_block *block)
}
static inline
-void tcf_block_put_ext(struct tcf_block *block,
- struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
struct tcf_block_ext_info *ei)
{
}