net: flow_offload: add flow_block_cb_alloc() and flow_block_cb_free()

Add a new helper function to allocate flow_block_cb objects.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index f12b905ad95e..45d74cb542cd 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -260,6 +260,20 @@ struct flow_block_offload {
 	struct netlink_ext_ack *extack;
 };
 
+struct flow_block_cb {
+	struct list_head	list;
+	tc_setup_cb_t		*cb;
+	void			*cb_ident;
+	void			*cb_priv;
+	void			(*release)(void *cb_priv);
+	unsigned int		refcnt;
+};
+
+struct flow_block_cb *flow_block_cb_alloc(struct net *net, tc_setup_cb_t *cb,
+					  void *cb_ident, void *cb_priv,
+					  void (*release)(void *cb_priv));
+void flow_block_cb_free(struct flow_block_cb *block_cb);
+
 int flow_block_cb_setup_simple(struct flow_block_offload *f,
 			       struct list_head *driver_list, tc_setup_cb_t *cb,
 			       void *cb_ident, void *cb_priv, bool ingress_only);