1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Linux WiMAX
 4 * Implement and export a method for getting a WiMAX device current state
 5 *
 6 * Copyright (C) 2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
 7 *
 8 * Based on previous WiMAX core work by:
 9 *  Copyright (C) 2008 Intel Corporation <linux-wimax@intel.com>
10 *  Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
11 */
12
13#include <net/wimax.h>
14#include <net/genetlink.h>
15#include <linux/wimax.h>
16#include <linux/security.h>
17#include "wimax-internal.h"
18
19#define D_SUBMODULE op_state_get
20#include "debug-levels.h"
21
22
23/*
24 * Exporting to user space over generic netlink
25 *
26 * Parse the state get command from user space, return a combination
27 * value that describe the current state.
28 *
29 * No attributes.
30 */
31int wimax_gnl_doit_state_get(struct sk_buff *skb, struct genl_info *info)
32{
33	int result, ifindex;
34	struct wimax_dev *wimax_dev;
35
36	d_fnstart(3, NULL, "(skb %p info %p)\n", skb, info);
37	result = -ENODEV;
38	if (info->attrs[WIMAX_GNL_STGET_IFIDX] == NULL) {
39		pr_err("WIMAX_GNL_OP_STATE_GET: can't find IFIDX attribute\n");
40		goto error_no_wimax_dev;
41	}
42	ifindex = nla_get_u32(info->attrs[WIMAX_GNL_STGET_IFIDX]);
43	wimax_dev = wimax_dev_get_by_genl_info(info, ifindex);
44	if (wimax_dev == NULL)
45		goto error_no_wimax_dev;
46	/* Execute the operation and send the result back to user space */
47	result = wimax_state_get(wimax_dev);
48	dev_put(wimax_dev->net_dev);
49error_no_wimax_dev:
50	d_fnend(3, NULL, "(skb %p info %p) = %d\n", skb, info, result);
51	return result;
52}