blob: 11ad3356eb5645ae62f24e48e7c19370b3c2ee9d [file] [log] [blame]
Paulius Zaleckas7f0333e2009-05-13 06:20:29 -07001/*
2 * Linux WiMAX
3 * Implement and export a method for getting a WiMAX device current state
4 *
5 * Copyright (C) 2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
6 *
7 * Based on previous WiMAX core work by:
8 * Copyright (C) 2008 Intel Corporation <linux-wimax@intel.com>
9 * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License version
13 * 2 as published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 * 02110-1301, USA.
24 */
25
26#include <net/wimax.h>
27#include <net/genetlink.h>
28#include <linux/wimax.h>
29#include <linux/security.h>
30#include "wimax-internal.h"
31
32#define D_SUBMODULE op_state_get
33#include "debug-levels.h"
34
35
Alexey Dobriyanb54452b2010-02-18 08:14:31 +000036static const struct nla_policy wimax_gnl_state_get_policy[WIMAX_GNL_ATTR_MAX + 1] = {
Paulius Zaleckas7f0333e2009-05-13 06:20:29 -070037 [WIMAX_GNL_STGET_IFIDX] = {
38 .type = NLA_U32,
39 },
40};
41
42
43/*
44 * Exporting to user space over generic netlink
45 *
46 * Parse the state get command from user space, return a combination
47 * value that describe the current state.
48 *
49 * No attributes.
50 */
51static
52int wimax_gnl_doit_state_get(struct sk_buff *skb, struct genl_info *info)
53{
54 int result, ifindex;
55 struct wimax_dev *wimax_dev;
56 struct device *dev;
57
58 d_fnstart(3, NULL, "(skb %p info %p)\n", skb, info);
59 result = -ENODEV;
60 if (info->attrs[WIMAX_GNL_STGET_IFIDX] == NULL) {
61 printk(KERN_ERR "WIMAX_GNL_OP_STATE_GET: can't find IFIDX "
62 "attribute\n");
63 goto error_no_wimax_dev;
64 }
65 ifindex = nla_get_u32(info->attrs[WIMAX_GNL_STGET_IFIDX]);
66 wimax_dev = wimax_dev_get_by_genl_info(info, ifindex);
67 if (wimax_dev == NULL)
68 goto error_no_wimax_dev;
69 dev = wimax_dev_to_dev(wimax_dev);
70 /* Execute the operation and send the result back to user space */
71 result = wimax_state_get(wimax_dev);
72 dev_put(wimax_dev->net_dev);
73error_no_wimax_dev:
74 d_fnend(3, NULL, "(skb %p info %p) = %d\n", skb, info, result);
75 return result;
76}
77
78
79struct genl_ops wimax_gnl_state_get = {
80 .cmd = WIMAX_GNL_OP_STATE_GET,
81 .flags = GENL_ADMIN_PERM,
82 .policy = wimax_gnl_state_get_policy,
83 .doit = wimax_gnl_doit_state_get,
84 .dumpit = NULL,
85};