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 */
wimax_gnl_doit_state_get(struct sk_buff * skb,struct genl_info * info)31 int 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);
49 error_no_wimax_dev:
50 d_fnend(3, NULL, "(skb %p info %p) = %d\n", skb, info, result);
51 return result;
52 }
53
