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04672fe6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
7f0333eb PZ |
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> | |
7f0333eb PZ |
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 | ||
7f0333eb PZ |
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 | */ | |
7f0333eb PZ |
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; | |
7f0333eb PZ |
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) { | |
28b7deae | 39 | pr_err("WIMAX_GNL_OP_STATE_GET: can't find IFIDX attribute\n"); |
7f0333eb PZ |
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; | |
7f0333eb PZ |
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 | } |