174 	struct flow_block_cb *block_cb;  in flow_block_cb_alloc()  local
176 	block_cb = kzalloc(sizeof(*block_cb), GFP_KERNEL);  in flow_block_cb_alloc()
177 	if (!block_cb)  in flow_block_cb_alloc()
180 	block_cb->cb = cb;  in flow_block_cb_alloc()
181 	block_cb->cb_ident = cb_ident;  in flow_block_cb_alloc()
182 	block_cb->cb_priv = cb_priv;  in flow_block_cb_alloc()
183 	block_cb->release = release;  in flow_block_cb_alloc()
185 	return block_cb;  in flow_block_cb_alloc()
189 void flow_block_cb_free(struct flow_block_cb *block_cb)  in flow_block_cb_free()  argument
191 	if (block_cb->release)  in flow_block_cb_free()
192 		block_cb->release(block_cb->cb_priv);  in flow_block_cb_free()
194 	kfree(block_cb);  in flow_block_cb_free()
201 	struct flow_block_cb *block_cb;  in flow_block_cb_lookup()  local
203 	list_for_each_entry(block_cb, &block->cb_list, list) {  in flow_block_cb_lookup()
204 		if (block_cb->cb == cb &&  in flow_block_cb_lookup()
205 		    block_cb->cb_ident == cb_ident)  in flow_block_cb_lookup()
206 			return block_cb;  in flow_block_cb_lookup()
213 void *flow_block_cb_priv(struct flow_block_cb *block_cb)  in flow_block_cb_priv()  argument
215 	return block_cb->cb_priv;  in flow_block_cb_priv()
219 void flow_block_cb_incref(struct flow_block_cb *block_cb)  in flow_block_cb_incref()  argument
221 	block_cb->refcnt++;  in flow_block_cb_incref()
225 unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb)  in flow_block_cb_decref()  argument
227 	return --block_cb->refcnt;  in flow_block_cb_decref()
234 	struct flow_block_cb *block_cb;  in flow_block_cb_is_busy()  local
236 	list_for_each_entry(block_cb, driver_block_list, driver_list) {  in flow_block_cb_is_busy()
237 		if (block_cb->cb == cb &&  in flow_block_cb_is_busy()
238 		    block_cb->cb_ident == cb_ident)  in flow_block_cb_is_busy()
252 	struct flow_block_cb *block_cb;  in flow_block_cb_setup_simple()  local
265 		block_cb = flow_block_cb_alloc(cb, cb_ident, cb_priv, NULL);  in flow_block_cb_setup_simple()
266 		if (IS_ERR(block_cb))  in flow_block_cb_setup_simple()
267 			return PTR_ERR(block_cb);  in flow_block_cb_setup_simple()
269 		flow_block_cb_add(block_cb, f);  in flow_block_cb_setup_simple()
270 		list_add_tail(&block_cb->driver_list, driver_block_list);  in flow_block_cb_setup_simple()
273 		block_cb = flow_block_cb_lookup(f->block, cb, cb_ident);  in flow_block_cb_setup_simple()
274 		if (!block_cb)  in flow_block_cb_setup_simple()
277 		flow_block_cb_remove(block_cb, f);  in flow_block_cb_setup_simple()
278 		list_del(&block_cb->driver_list);  in flow_block_cb_setup_simple()