93 static int ops_init(const struct pernet_operations *ops, struct net *net)  in ops_init()  argument
98 	if (ops->id && ops->size) {  in ops_init()
99 		data = kzalloc(ops->size, GFP_KERNEL);  in ops_init()
103 		err = net_assign_generic(net, *ops->id, data);  in ops_init()
108 	if (ops->init)  in ops_init()
109 		err = ops->init(net);  in ops_init()
120 static void ops_free(const struct pernet_operations *ops, struct net *net)  in ops_free()  argument
122 	if (ops->id && ops->size) {  in ops_free()
123 		int id = *ops->id;  in ops_free()
128 static void ops_exit_list(const struct pernet_operations *ops,  in ops_exit_list()  argument
132 	if (ops->exit) {  in ops_exit_list()
134 			ops->exit(net);  in ops_exit_list()
136 	if (ops->exit_batch)  in ops_exit_list()
137 		ops->exit_batch(net_exit_list);  in ops_exit_list()
140 static void ops_free_list(const struct pernet_operations *ops,  in ops_free_list()  argument
144 	if (ops->size && ops->id) {  in ops_free_list()
146 			ops_free(ops, net);  in ops_free_list()
275 	const struct pernet_operations *ops, *saved_ops;  in setup_net()  local
286 	list_for_each_entry(ops, &pernet_list, list) {  in setup_net()
287 		error = ops_init(ops, net);  in setup_net()
299 	saved_ops = ops;  in setup_net()
300 	list_for_each_entry_continue_reverse(ops, &pernet_list, list)  in setup_net()
301 		ops_exit_list(ops, &net_exit_list);  in setup_net()
303 	ops = saved_ops;  in setup_net()
304 	list_for_each_entry_continue_reverse(ops, &pernet_list, list)  in setup_net()
305 		ops_free_list(ops, &net_exit_list);  in setup_net()
387 	const struct pernet_operations *ops;  in cleanup_net()  local
430 	list_for_each_entry_reverse(ops, &pernet_list, list)  in cleanup_net()
431 		ops_exit_list(ops, &net_exit_list);  in cleanup_net()
434 	list_for_each_entry_reverse(ops, &pernet_list, list)  in cleanup_net()
435 		ops_free_list(ops, &net_exit_list);  in cleanup_net()
477 	if (ns->ops == &netns_operations)  in get_net_ns_by_fd()
519 	net->ns.ops = &netns_operations;  in net_ns_net_init()
772 					struct pernet_operations *ops)  in __register_pernet_operations()  argument
778 	list_add_tail(&ops->list, list);  in __register_pernet_operations()
779 	if (ops->init || (ops->id && ops->size)) {  in __register_pernet_operations()
781 			error = ops_init(ops, net);  in __register_pernet_operations()
791 	list_del(&ops->list);  in __register_pernet_operations()
792 	ops_exit_list(ops, &net_exit_list);  in __register_pernet_operations()
793 	ops_free_list(ops, &net_exit_list);  in __register_pernet_operations()
797 static void __unregister_pernet_operations(struct pernet_operations *ops)  in __unregister_pernet_operations()  argument
802 	list_del(&ops->list);  in __unregister_pernet_operations()
805 	ops_exit_list(ops, &net_exit_list);  in __unregister_pernet_operations()
806 	ops_free_list(ops, &net_exit_list);  in __unregister_pernet_operations()
812 					struct pernet_operations *ops)  in __register_pernet_operations()  argument
814 	return ops_init(ops, &init_net);  in __register_pernet_operations()
817 static void __unregister_pernet_operations(struct pernet_operations *ops)  in __unregister_pernet_operations()  argument
821 	ops_exit_list(ops, &net_exit_list);  in __unregister_pernet_operations()
822 	ops_free_list(ops, &net_exit_list);  in __unregister_pernet_operations()
830 				      struct pernet_operations *ops)  in register_pernet_operations()  argument
834 	if (ops->id) {  in register_pernet_operations()
836 		error = ida_get_new_above(&net_generic_ids, 1, ops->id);  in register_pernet_operations()
844 		max_gen_ptrs = max_t(unsigned int, max_gen_ptrs, *ops->id);  in register_pernet_operations()
846 	error = __register_pernet_operations(list, ops);  in register_pernet_operations()
849 		if (ops->id)  in register_pernet_operations()
850 			ida_remove(&net_generic_ids, *ops->id);  in register_pernet_operations()
856 static void unregister_pernet_operations(struct pernet_operations *ops)  in unregister_pernet_operations()  argument
859 	__unregister_pernet_operations(ops);  in unregister_pernet_operations()
861 	if (ops->id)  in unregister_pernet_operations()
862 		ida_remove(&net_generic_ids, *ops->id);  in unregister_pernet_operations()
884 int register_pernet_subsys(struct pernet_operations *ops)  in register_pernet_subsys()  argument
888 	error =  register_pernet_operations(first_device, ops);  in register_pernet_subsys()
903 void unregister_pernet_subsys(struct pernet_operations *ops)  in unregister_pernet_subsys()  argument
906 	unregister_pernet_operations(ops);  in unregister_pernet_subsys()
930 int register_pernet_device(struct pernet_operations *ops)  in register_pernet_device()  argument
934 	error = register_pernet_operations(&pernet_list, ops);  in register_pernet_device()
936 		first_device = &ops->list;  in register_pernet_device()
951 void unregister_pernet_device(struct pernet_operations *ops)  in unregister_pernet_device()  argument
954 	if (&ops->list == first_device)  in unregister_pernet_device()
956 	unregister_pernet_operations(ops);  in unregister_pernet_device()