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Commit d63db30c authored by Pablo Neira Ayuso's avatar Pablo Neira Ayuso Committed by David S. Miller
Browse files

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: default avatarPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 32f8c409

include/net/flow_offload.h

+14 −0
Original line number Diff line number Diff line
@@ -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);

net/core/flow_offload.c

+28 −0
Original line number Diff line number Diff line
@@ -166,6 +166,34 @@ void flow_rule_match_enc_opts(const struct flow_rule *rule, 
}

EXPORT_SYMBOL(flow_rule_match_enc_opts);



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))

{

	struct flow_block_cb *block_cb;



	block_cb = kzalloc(sizeof(*block_cb), GFP_KERNEL);

	if (!block_cb)

		return ERR_PTR(-ENOMEM);



	block_cb->cb = cb;

	block_cb->cb_ident = cb_ident;

	block_cb->cb_priv = cb_priv;

	block_cb->release = release;



	return block_cb;

}

EXPORT_SYMBOL(flow_block_cb_alloc);



void flow_block_cb_free(struct flow_block_cb *block_cb)

{

	if (block_cb->release)

		block_cb->release(block_cb->cb_priv);



	kfree(block_cb);

}

EXPORT_SYMBOL(flow_block_cb_free);



int flow_block_cb_setup_simple(struct flow_block_offload *f,

			       struct list_head *driver_block_list,

			       tc_setup_cb_t *cb, void *cb_ident, void *cb_priv,