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Merge tag 'v3.10.101' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / wireless / wext-core.c
CommitLineData
1da177e4 1/*
3d23e349 2 * This file implement the Wireless Extensions core API.
1da177e4
LT		 3 *
4 * Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
c2805fbb 5 * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
3d23e349 6 * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
1da177e4
LT		 7 *
8 * (As all part of the Linux kernel, this file is GPL)
9 */
3d23e349
JB		 10#include <linux/kernel.h>
11#include <linux/netdevice.h>
12#include <linux/rtnetlink.h>
5a0e3ad6 13#include <linux/slab.h>
3d23e349
JB		 14#include <linux/wireless.h>
15#include <linux/uaccess.h>
bc3b2d7f 16#include <linux/export.h>
3d23e349
JB		 17#include <net/cfg80211.h>
18#include <net/iw_handler.h>
bd5785ba 19#include <net/netlink.h>
295f4a1f 20#include <net/wext.h>
3d23e349
JB		 21#include <net/net_namespace.h>
22
23typedef int (*wext_ioctl_func)(struct net_device *, struct iwreq *,
24 unsigned int, struct iw_request_info *,
25 iw_handler);
1da177e4 26
1da177e4 27
1da177e4
LT		 28/*
29 * Meta-data about all the standard Wireless Extension request we
30 * know about.
31 */
32static const struct iw_ioctl_description standard_ioctl[] = {
44608f80 33 [IW_IOCTL_IDX(SIOCSIWCOMMIT)] = {
1da177e4
LT		 34 .header_type = IW_HEADER_TYPE_NULL,
35 },
44608f80 36 [IW_IOCTL_IDX(SIOCGIWNAME)] = {
1da177e4
LT		 37 .header_type = IW_HEADER_TYPE_CHAR,
38 .flags = IW_DESCR_FLAG_DUMP,
39 },
44608f80 40 [IW_IOCTL_IDX(SIOCSIWNWID)] = {
1da177e4
LT		 41 .header_type = IW_HEADER_TYPE_PARAM,
42 .flags = IW_DESCR_FLAG_EVENT,
43 },
44608f80 44 [IW_IOCTL_IDX(SIOCGIWNWID)] = {
1da177e4
LT		 45 .header_type = IW_HEADER_TYPE_PARAM,
46 .flags = IW_DESCR_FLAG_DUMP,
47 },
44608f80 48 [IW_IOCTL_IDX(SIOCSIWFREQ)] = {
1da177e4
LT		 49 .header_type = IW_HEADER_TYPE_FREQ,
50 .flags = IW_DESCR_FLAG_EVENT,
51 },
44608f80 52 [IW_IOCTL_IDX(SIOCGIWFREQ)] = {
1da177e4
LT		 53 .header_type = IW_HEADER_TYPE_FREQ,
54 .flags = IW_DESCR_FLAG_DUMP,
55 },
44608f80 56 [IW_IOCTL_IDX(SIOCSIWMODE)] = {
1da177e4
LT		 57 .header_type = IW_HEADER_TYPE_UINT,
58 .flags = IW_DESCR_FLAG_EVENT,
59 },
44608f80 60 [IW_IOCTL_IDX(SIOCGIWMODE)] = {
1da177e4
LT		 61 .header_type = IW_HEADER_TYPE_UINT,
62 .flags = IW_DESCR_FLAG_DUMP,
63 },
44608f80 64 [IW_IOCTL_IDX(SIOCSIWSENS)] = {
1da177e4
LT		 65 .header_type = IW_HEADER_TYPE_PARAM,
66 },
44608f80 67 [IW_IOCTL_IDX(SIOCGIWSENS)] = {
1da177e4
LT		 68 .header_type = IW_HEADER_TYPE_PARAM,
69 },
44608f80 70 [IW_IOCTL_IDX(SIOCSIWRANGE)] = {
1da177e4
LT		 71 .header_type = IW_HEADER_TYPE_NULL,
72 },
44608f80 73 [IW_IOCTL_IDX(SIOCGIWRANGE)] = {
1da177e4
LT		 74 .header_type = IW_HEADER_TYPE_POINT,
75 .token_size = 1,
76 .max_tokens = sizeof(struct iw_range),
77 .flags = IW_DESCR_FLAG_DUMP,
78 },
44608f80 79 [IW_IOCTL_IDX(SIOCSIWPRIV)] = {
1da177e4
LT		 80 .header_type = IW_HEADER_TYPE_NULL,
81 },
44608f80 82 [IW_IOCTL_IDX(SIOCGIWPRIV)] = { /* (handled directly by us) */
711e2c33
JT		 83 .header_type = IW_HEADER_TYPE_POINT,
84 .token_size = sizeof(struct iw_priv_args),
85 .max_tokens = 16,
86 .flags = IW_DESCR_FLAG_NOMAX,
1da177e4 87 },
44608f80 88 [IW_IOCTL_IDX(SIOCSIWSTATS)] = {
1da177e4
LT		 89 .header_type = IW_HEADER_TYPE_NULL,
90 },
44608f80 91 [IW_IOCTL_IDX(SIOCGIWSTATS)] = { /* (handled directly by us) */
711e2c33
JT		 92 .header_type = IW_HEADER_TYPE_POINT,
93 .token_size = 1,
94 .max_tokens = sizeof(struct iw_statistics),
1da177e4
LT		 95 .flags = IW_DESCR_FLAG_DUMP,
96 },
44608f80 97 [IW_IOCTL_IDX(SIOCSIWSPY)] = {
1da177e4
LT		 98 .header_type = IW_HEADER_TYPE_POINT,
99 .token_size = sizeof(struct sockaddr),
100 .max_tokens = IW_MAX_SPY,
101 },
44608f80 102 [IW_IOCTL_IDX(SIOCGIWSPY)] = {
1da177e4
LT		 103 .header_type = IW_HEADER_TYPE_POINT,
104 .token_size = sizeof(struct sockaddr) +
105 sizeof(struct iw_quality),
106 .max_tokens = IW_MAX_SPY,
107 },
44608f80 108 [IW_IOCTL_IDX(SIOCSIWTHRSPY)] = {
1da177e4
LT		 109 .header_type = IW_HEADER_TYPE_POINT,
110 .token_size = sizeof(struct iw_thrspy),
111 .min_tokens = 1,
112 .max_tokens = 1,
113 },
44608f80 114 [IW_IOCTL_IDX(SIOCGIWTHRSPY)] = {
1da177e4
LT		 115 .header_type = IW_HEADER_TYPE_POINT,
116 .token_size = sizeof(struct iw_thrspy),
117 .min_tokens = 1,
118 .max_tokens = 1,
119 },
44608f80 120 [IW_IOCTL_IDX(SIOCSIWAP)] = {
1da177e4
LT		 121 .header_type = IW_HEADER_TYPE_ADDR,
122 },
44608f80 123 [IW_IOCTL_IDX(SIOCGIWAP)] = {
1da177e4
LT		 124 .header_type = IW_HEADER_TYPE_ADDR,
125 .flags = IW_DESCR_FLAG_DUMP,
126 },
44608f80 127 [IW_IOCTL_IDX(SIOCSIWMLME)] = {
fff9cfd9
JT		 128 .header_type = IW_HEADER_TYPE_POINT,
129 .token_size = 1,
130 .min_tokens = sizeof(struct iw_mlme),
131 .max_tokens = sizeof(struct iw_mlme),
132 },
44608f80 133 [IW_IOCTL_IDX(SIOCGIWAPLIST)] = {
1da177e4
LT		 134 .header_type = IW_HEADER_TYPE_POINT,
135 .token_size = sizeof(struct sockaddr) +
136 sizeof(struct iw_quality),
137 .max_tokens = IW_MAX_AP,
138 .flags = IW_DESCR_FLAG_NOMAX,
139 },
44608f80 140 [IW_IOCTL_IDX(SIOCSIWSCAN)] = {
fff9cfd9
JT		 141 .header_type = IW_HEADER_TYPE_POINT,
142 .token_size = 1,
143 .min_tokens = 0,
144 .max_tokens = sizeof(struct iw_scan_req),
1da177e4 145 },
44608f80 146 [IW_IOCTL_IDX(SIOCGIWSCAN)] = {
1da177e4
LT		 147 .header_type = IW_HEADER_TYPE_POINT,
148 .token_size = 1,
149 .max_tokens = IW_SCAN_MAX_DATA,
150 .flags = IW_DESCR_FLAG_NOMAX,
151 },
44608f80 152 [IW_IOCTL_IDX(SIOCSIWESSID)] = {
1da177e4
LT		 153 .header_type = IW_HEADER_TYPE_POINT,
154 .token_size = 1,
baef1865 155 .max_tokens = IW_ESSID_MAX_SIZE,
1da177e4
LT		 156 .flags = IW_DESCR_FLAG_EVENT,
157 },
44608f80 158 [IW_IOCTL_IDX(SIOCGIWESSID)] = {
1da177e4
LT		 159 .header_type = IW_HEADER_TYPE_POINT,
160 .token_size = 1,
baef1865 161 .max_tokens = IW_ESSID_MAX_SIZE,
1da177e4
LT		 162 .flags = IW_DESCR_FLAG_DUMP,
163 },
44608f80 164 [IW_IOCTL_IDX(SIOCSIWNICKN)] = {
1da177e4
LT		 165 .header_type = IW_HEADER_TYPE_POINT,
166 .token_size = 1,
baef1865 167 .max_tokens = IW_ESSID_MAX_SIZE,
1da177e4 168 },
44608f80 169 [IW_IOCTL_IDX(SIOCGIWNICKN)] = {
1da177e4
LT		 170 .header_type = IW_HEADER_TYPE_POINT,
171 .token_size = 1,
baef1865 172 .max_tokens = IW_ESSID_MAX_SIZE,
1da177e4 173 },
44608f80 174 [IW_IOCTL_IDX(SIOCSIWRATE)] = {
1da177e4
LT		 175 .header_type = IW_HEADER_TYPE_PARAM,
176 },
44608f80 177 [IW_IOCTL_IDX(SIOCGIWRATE)] = {
1da177e4
LT		 178 .header_type = IW_HEADER_TYPE_PARAM,
179 },
44608f80 180 [IW_IOCTL_IDX(SIOCSIWRTS)] = {
1da177e4
LT		 181 .header_type = IW_HEADER_TYPE_PARAM,
182 },
44608f80 183 [IW_IOCTL_IDX(SIOCGIWRTS)] = {
1da177e4
LT		 184 .header_type = IW_HEADER_TYPE_PARAM,
185 },
44608f80 186 [IW_IOCTL_IDX(SIOCSIWFRAG)] = {
1da177e4
LT		 187 .header_type = IW_HEADER_TYPE_PARAM,
188 },
44608f80 189 [IW_IOCTL_IDX(SIOCGIWFRAG)] = {
1da177e4
LT		 190 .header_type = IW_HEADER_TYPE_PARAM,
191 },
44608f80 192 [IW_IOCTL_IDX(SIOCSIWTXPOW)] = {
1da177e4
LT		 193 .header_type = IW_HEADER_TYPE_PARAM,
194 },
44608f80 195 [IW_IOCTL_IDX(SIOCGIWTXPOW)] = {
1da177e4
LT		 196 .header_type = IW_HEADER_TYPE_PARAM,
197 },
44608f80 198 [IW_IOCTL_IDX(SIOCSIWRETRY)] = {
1da177e4
LT		 199 .header_type = IW_HEADER_TYPE_PARAM,
200 },
44608f80 201 [IW_IOCTL_IDX(SIOCGIWRETRY)] = {
1da177e4
LT		 202 .header_type = IW_HEADER_TYPE_PARAM,
203 },
44608f80 204 [IW_IOCTL_IDX(SIOCSIWENCODE)] = {
1da177e4
LT		 205 .header_type = IW_HEADER_TYPE_POINT,
206 .token_size = 1,
207 .max_tokens = IW_ENCODING_TOKEN_MAX,
208 .flags = IW_DESCR_FLAG_EVENT | IW_DESCR_FLAG_RESTRICT,
209 },
44608f80 210 [IW_IOCTL_IDX(SIOCGIWENCODE)] = {
1da177e4
LT		 211 .header_type = IW_HEADER_TYPE_POINT,
212 .token_size = 1,
213 .max_tokens = IW_ENCODING_TOKEN_MAX,
214 .flags = IW_DESCR_FLAG_DUMP | IW_DESCR_FLAG_RESTRICT,
215 },
44608f80 216 [IW_IOCTL_IDX(SIOCSIWPOWER)] = {
1da177e4
LT		 217 .header_type = IW_HEADER_TYPE_PARAM,
218 },
44608f80 219 [IW_IOCTL_IDX(SIOCGIWPOWER)] = {
1da177e4
LT		 220 .header_type = IW_HEADER_TYPE_PARAM,
221 },
44608f80 222 [IW_IOCTL_IDX(SIOCSIWGENIE)] = {
fff9cfd9
JT		 223 .header_type = IW_HEADER_TYPE_POINT,
224 .token_size = 1,
225 .max_tokens = IW_GENERIC_IE_MAX,
226 },
44608f80 227 [IW_IOCTL_IDX(SIOCGIWGENIE)] = {
fff9cfd9
JT		 228 .header_type = IW_HEADER_TYPE_POINT,
229 .token_size = 1,
230 .max_tokens = IW_GENERIC_IE_MAX,
231 },
44608f80 232 [IW_IOCTL_IDX(SIOCSIWAUTH)] = {
fff9cfd9
JT		 233 .header_type = IW_HEADER_TYPE_PARAM,
234 },
44608f80 235 [IW_IOCTL_IDX(SIOCGIWAUTH)] = {
fff9cfd9
JT		 236 .header_type = IW_HEADER_TYPE_PARAM,
237 },
44608f80 238 [IW_IOCTL_IDX(SIOCSIWENCODEEXT)] = {
fff9cfd9
JT		 239 .header_type = IW_HEADER_TYPE_POINT,
240 .token_size = 1,
241 .min_tokens = sizeof(struct iw_encode_ext),
242 .max_tokens = sizeof(struct iw_encode_ext) +
243 IW_ENCODING_TOKEN_MAX,
244 },
44608f80 245 [IW_IOCTL_IDX(SIOCGIWENCODEEXT)] = {
fff9cfd9
JT		 246 .header_type = IW_HEADER_TYPE_POINT,
247 .token_size = 1,
248 .min_tokens = sizeof(struct iw_encode_ext),
249 .max_tokens = sizeof(struct iw_encode_ext) +
250 IW_ENCODING_TOKEN_MAX,
251 },
44608f80 252 [IW_IOCTL_IDX(SIOCSIWPMKSA)] = {
fff9cfd9
JT		 253 .header_type = IW_HEADER_TYPE_POINT,
254 .token_size = 1,
255 .min_tokens = sizeof(struct iw_pmksa),
256 .max_tokens = sizeof(struct iw_pmksa),
257 },
1da177e4 258};
95c96174 259static const unsigned int standard_ioctl_num = ARRAY_SIZE(standard_ioctl);
1da177e4
LT		 260
261/*
262 * Meta-data about all the additional standard Wireless Extension events
263 * we know about.
264 */
265static const struct iw_ioctl_description standard_event[] = {
76326f1d 266 [IW_EVENT_IDX(IWEVTXDROP)] = {
1da177e4
LT		 267 .header_type = IW_HEADER_TYPE_ADDR,
268 },
76326f1d 269 [IW_EVENT_IDX(IWEVQUAL)] = {
1da177e4
LT		 270 .header_type = IW_HEADER_TYPE_QUAL,
271 },
76326f1d 272 [IW_EVENT_IDX(IWEVCUSTOM)] = {
1da177e4
LT		 273 .header_type = IW_HEADER_TYPE_POINT,
274 .token_size = 1,
275 .max_tokens = IW_CUSTOM_MAX,
276 },
76326f1d 277 [IW_EVENT_IDX(IWEVREGISTERED)] = {
1da177e4
LT		 278 .header_type = IW_HEADER_TYPE_ADDR,
279 },
76326f1d 280 [IW_EVENT_IDX(IWEVEXPIRED)] = {
4ec93edb 281 .header_type = IW_HEADER_TYPE_ADDR,
1da177e4 282 },
76326f1d 283 [IW_EVENT_IDX(IWEVGENIE)] = {
fff9cfd9
JT		 284 .header_type = IW_HEADER_TYPE_POINT,
285 .token_size = 1,
286 .max_tokens = IW_GENERIC_IE_MAX,
287 },
76326f1d 288 [IW_EVENT_IDX(IWEVMICHAELMICFAILURE)] = {
4ec93edb 289 .header_type = IW_HEADER_TYPE_POINT,
fff9cfd9
JT		 290 .token_size = 1,
291 .max_tokens = sizeof(struct iw_michaelmicfailure),
292 },
76326f1d 293 [IW_EVENT_IDX(IWEVASSOCREQIE)] = {
fff9cfd9
JT		 294 .header_type = IW_HEADER_TYPE_POINT,
295 .token_size = 1,
296 .max_tokens = IW_GENERIC_IE_MAX,
297 },
76326f1d 298 [IW_EVENT_IDX(IWEVASSOCRESPIE)] = {
fff9cfd9
JT		 299 .header_type = IW_HEADER_TYPE_POINT,
300 .token_size = 1,
301 .max_tokens = IW_GENERIC_IE_MAX,
302 },
76326f1d 303 [IW_EVENT_IDX(IWEVPMKIDCAND)] = {
fff9cfd9
JT		 304 .header_type = IW_HEADER_TYPE_POINT,
305 .token_size = 1,
306 .max_tokens = sizeof(struct iw_pmkid_cand),
307 },
1da177e4 308};
95c96174 309static const unsigned int standard_event_num = ARRAY_SIZE(standard_event);
1da177e4 310
1da177e4
LT		 311/* Size (in bytes) of various events */
312static const int event_type_size[] = {
313 IW_EV_LCP_LEN, /* IW_HEADER_TYPE_NULL */
314 0,
315 IW_EV_CHAR_LEN, /* IW_HEADER_TYPE_CHAR */
316 0,
317 IW_EV_UINT_LEN, /* IW_HEADER_TYPE_UINT */
318 IW_EV_FREQ_LEN, /* IW_HEADER_TYPE_FREQ */
319 IW_EV_ADDR_LEN, /* IW_HEADER_TYPE_ADDR */
320 0,
321 IW_EV_POINT_LEN, /* Without variable payload */
322 IW_EV_PARAM_LEN, /* IW_HEADER_TYPE_PARAM */
323 IW_EV_QUAL_LEN, /* IW_HEADER_TYPE_QUAL */
324};
325
1dacc76d
JB		 326#ifdef CONFIG_COMPAT
327static const int compat_event_type_size[] = {
328 IW_EV_COMPAT_LCP_LEN, /* IW_HEADER_TYPE_NULL */
329 0,
330 IW_EV_COMPAT_CHAR_LEN, /* IW_HEADER_TYPE_CHAR */
331 0,
332 IW_EV_COMPAT_UINT_LEN, /* IW_HEADER_TYPE_UINT */
333 IW_EV_COMPAT_FREQ_LEN, /* IW_HEADER_TYPE_FREQ */
334 IW_EV_COMPAT_ADDR_LEN, /* IW_HEADER_TYPE_ADDR */
335 0,
336 IW_EV_COMPAT_POINT_LEN, /* Without variable payload */
337 IW_EV_COMPAT_PARAM_LEN, /* IW_HEADER_TYPE_PARAM */
338 IW_EV_COMPAT_QUAL_LEN, /* IW_HEADER_TYPE_QUAL */
339};
340#endif
c2805fbb 341
1da177e4 342
3d23e349 343/* IW event code */
1da177e4 344
5fc40fd1
JB		 345static void wireless_nlevent_flush(void)
346{
347 struct sk_buff *skb;
348 struct net *net;
349
350 ASSERT_RTNL();
351
352 for_each_net(net) {
353 while ((skb = skb_dequeue(&net->wext_nlevents)))
354 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL,
355 GFP_KERNEL);
356 }
357}
358
359static int wext_netdev_notifier_call(struct notifier_block *nb,
360 unsigned long state, void *ptr)
361{
362 /*
363 * When a netdev changes state in any way, flush all pending messages
364 * to avoid them going out in a strange order, e.g. RTM_NEWLINK after
365 * RTM_DELLINK, or with IFF_UP after without IFF_UP during dev_close()
366 * or similar - all of which could otherwise happen due to delays from
367 * schedule_work().
368 */
369 wireless_nlevent_flush();
370
371 return NOTIFY_OK;
372}
373
374static struct notifier_block wext_netdev_notifier = {
375 .notifier_call = wext_netdev_notifier_call,
376};
377
3d23e349 378static int __net_init wext_pernet_init(struct net *net)
711e2c33 379{
3d23e349
JB		 380 skb_queue_head_init(&net->wext_nlevents);
381 return 0;
711e2c33
JT		 382}
383
3d23e349 384static void __net_exit wext_pernet_exit(struct net *net)
711e2c33 385{
3d23e349 386 skb_queue_purge(&net->wext_nlevents);
711e2c33
JT		 387}
388
3d23e349
JB		 389static struct pernet_operations wext_pernet_ops = {
390 .init = wext_pernet_init,
391 .exit = wext_pernet_exit,
392};
1da177e4 393
3d23e349 394static int __init wireless_nlevent_init(void)
1da177e4 395{
5fc40fd1
JB		 396 int err = register_pernet_subsys(&wext_pernet_ops);
397
398 if (err)
399 return err;
400
401 return register_netdevice_notifier(&wext_netdev_notifier);
1da177e4
LT		 402}
403
3d23e349 404subsys_initcall(wireless_nlevent_init);
1da177e4 405
3d23e349
JB		 406/* Process events generated by the wireless layer or the driver. */
407static void wireless_nlevent_process(struct work_struct *work)
7be69c0b
JB		 408{
409 rtnl_lock();
5fc40fd1 410 wireless_nlevent_flush();
7be69c0b
JB		 411 rtnl_unlock();
412}
413
3d23e349 414static DECLARE_WORK(wireless_nlevent_work, wireless_nlevent_process);
1da177e4 415
3d23e349
JB		 416static struct nlmsghdr *rtnetlink_ifinfo_prep(struct net_device *dev,
417 struct sk_buff *skb)
1da177e4 418{
3d23e349
JB		 419 struct ifinfomsg *r;
420 struct nlmsghdr *nlh;
1da177e4 421
3d23e349
JB		 422 nlh = nlmsg_put(skb, 0, 0, RTM_NEWLINK, sizeof(*r), 0);
423 if (!nlh)
424 return NULL;
1da177e4 425
3d23e349
JB		 426 r = nlmsg_data(nlh);
427 r->ifi_family = AF_UNSPEC;
428 r->__ifi_pad = 0;
429 r->ifi_type = dev->type;
430 r->ifi_index = dev->ifindex;
431 r->ifi_flags = dev_get_flags(dev);
432 r->ifi_change = 0; /* Wireless changes don't affect those flags */
1da177e4 433
9360ffd1
DM		 434 if (nla_put_string(skb, IFLA_IFNAME, dev->name))
435 goto nla_put_failure;
881d966b 436
3d23e349
JB		 437 return nlh;
438 nla_put_failure:
439 nlmsg_cancel(skb, nlh);
440 return NULL;
881d966b 441}
1da177e4 442
3d23e349 443
1da177e4 444/*
3d23e349
JB		 445 * Main event dispatcher. Called from other parts and drivers.
446 * Send the event on the appropriate channels.
447 * May be called from interrupt context.
1da177e4 448 */
3d23e349
JB		 449void wireless_send_event(struct net_device * dev,
450 unsigned int cmd,
451 union iwreq_data * wrqu,
452 const char * extra)
84149b0f 453{
3d23e349
JB		 454 const struct iw_ioctl_description * descr = NULL;
455 int extra_len = 0;
456 struct iw_event *event; /* Mallocated whole event */
457 int event_len; /* Its size */
458 int hdr_len; /* Size of the event header */
459 int wrqu_off = 0; /* Offset in wrqu */
460 /* Don't "optimise" the following variable, it will crash */
95c96174 461 unsigned int cmd_index; /* *MUST* be unsigned */
3d23e349
JB		 462 struct sk_buff *skb;
463 struct nlmsghdr *nlh;
464 struct nlattr *nla;
465#ifdef CONFIG_COMPAT
466 struct __compat_iw_event *compat_event;
467 struct compat_iw_point compat_wrqu;
468 struct sk_buff *compskb;
469#endif
84149b0f 470
3d23e349
JB		 471 /*
472 * Nothing in the kernel sends scan events with data, be safe.
473 * This is necessary because we cannot fix up scan event data
474 * for compat, due to being contained in 'extra', but normally
475 * applications are required to retrieve the scan data anyway
476 * and no data is included in the event, this codifies that
477 * practice.
84149b0f 478 */
3d23e349
JB		 479 if (WARN_ON(cmd == SIOCGIWSCAN && extra))
480 extra = NULL;
84149b0f 481
3d23e349
JB		 482 /* Get the description of the Event */
483 if (cmd <= SIOCIWLAST) {
44608f80 484 cmd_index = IW_IOCTL_IDX(cmd);
3d23e349
JB		 485 if (cmd_index < standard_ioctl_num)
486 descr = &(standard_ioctl[cmd_index]);
487 } else {
76326f1d 488 cmd_index = IW_EVENT_IDX(cmd);
3d23e349
JB		 489 if (cmd_index < standard_event_num)
490 descr = &(standard_event[cmd_index]);
491 }
492 /* Don't accept unknown events */
493 if (descr == NULL) {
494 /* Note : we don't return an error to the driver, because
495 * the driver would not know what to do about it. It can't
496 * return an error to the user, because the event is not
497 * initiated by a user request.
498 * The best the driver could do is to log an error message.
499 * We will do it ourselves instead...
500 */
e9c0268f
JP		 501 netdev_err(dev, "(WE) : Invalid/Unknown Wireless Event (0x%04X)\n",
502 cmd);
3d23e349
JB		 503 return;
504 }
505
506 /* Check extra parameters and set extra_len */
507 if (descr->header_type == IW_HEADER_TYPE_POINT) {
508 /* Check if number of token fits within bounds */
509 if (wrqu->data.length > descr->max_tokens) {
e5f5b2fb
AS		 510 netdev_err(dev, "(WE) : Wireless Event (cmd=0x%04X) too big (%d)\n",
511 cmd, wrqu->data.length);
3d23e349
JB		 512 return;
513 }
514 if (wrqu->data.length < descr->min_tokens) {
e5f5b2fb
AS		 515 netdev_err(dev, "(WE) : Wireless Event (cmd=0x%04X) too small (%d)\n",
516 cmd, wrqu->data.length);
3d23e349
JB		 517 return;
518 }
519 /* Calculate extra_len - extra is NULL for restricted events */
520 if (extra != NULL)
521 extra_len = wrqu->data.length * descr->token_size;
522 /* Always at an offset in wrqu */
523 wrqu_off = IW_EV_POINT_OFF;
524 }
525
526 /* Total length of the event */
527 hdr_len = event_type_size[descr->header_type];
528 event_len = hdr_len + extra_len;
529
530 /*
531 * The problem for 64/32 bit.
532 *
533 * On 64-bit, a regular event is laid out as follows:
534 * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
535 * | event.len | event.cmd | p a d d i n g |
536 * | wrqu data ... (with the correct size) |
537 *
538 * This padding exists because we manipulate event->u,
539 * and 'event' is not packed.
540 *
541 * An iw_point event is laid out like this instead:
542 * | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
543 * | event.len | event.cmd | p a d d i n g |
544 * | iwpnt.len | iwpnt.flg | p a d d i n g |
545 * | extra data ...
546 *
547 * The second padding exists because struct iw_point is extended,
548 * but this depends on the platform...
549 *
550 * On 32-bit, all the padding shouldn't be there.
551 */
552
553 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
554 if (!skb)
555 return;
556
557 /* Send via the RtNetlink event channel */
558 nlh = rtnetlink_ifinfo_prep(dev, skb);
559 if (WARN_ON(!nlh)) {
560 kfree_skb(skb);
561 return;
562 }
563
564 /* Add the wireless events in the netlink packet */
565 nla = nla_reserve(skb, IFLA_WIRELESS, event_len);
566 if (!nla) {
567 kfree_skb(skb);
568 return;
569 }
570 event = nla_data(nla);
571
572 /* Fill event - first clear to avoid data leaking */
573 memset(event, 0, hdr_len);
574 event->len = event_len;
575 event->cmd = cmd;
576 memcpy(&event->u, ((char *) wrqu) + wrqu_off, hdr_len - IW_EV_LCP_LEN);
577 if (extra_len)
578 memcpy(((char *) event) + hdr_len, extra, extra_len);
579
580 nlmsg_end(skb, nlh);
581#ifdef CONFIG_COMPAT
582 hdr_len = compat_event_type_size[descr->header_type];
583 event_len = hdr_len + extra_len;
584
585 compskb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
586 if (!compskb) {
587 kfree_skb(skb);
588 return;
589 }
590
591 /* Send via the RtNetlink event channel */
592 nlh = rtnetlink_ifinfo_prep(dev, compskb);
593 if (WARN_ON(!nlh)) {
594 kfree_skb(skb);
595 kfree_skb(compskb);
596 return;
597 }
598
599 /* Add the wireless events in the netlink packet */
600 nla = nla_reserve(compskb, IFLA_WIRELESS, event_len);
601 if (!nla) {
602 kfree_skb(skb);
603 kfree_skb(compskb);
604 return;
605 }
606 compat_event = nla_data(nla);
607
608 compat_event->len = event_len;
609 compat_event->cmd = cmd;
610 if (descr->header_type == IW_HEADER_TYPE_POINT) {
611 compat_wrqu.length = wrqu->data.length;
612 compat_wrqu.flags = wrqu->data.flags;
613 memcpy(&compat_event->pointer,
614 ((char *) &compat_wrqu) + IW_EV_COMPAT_POINT_OFF,
615 hdr_len - IW_EV_COMPAT_LCP_LEN);
616 if (extra_len)
617 memcpy(((char *) compat_event) + hdr_len,
618 extra, extra_len);
619 } else {
620 /* extra_len must be zero, so no if (extra) needed */
621 memcpy(&compat_event->pointer, wrqu,
622 hdr_len - IW_EV_COMPAT_LCP_LEN);
623 }
624
625 nlmsg_end(compskb, nlh);
626
627 skb_shinfo(skb)->frag_list = compskb;
628#endif
629 skb_queue_tail(&dev_net(dev)->wext_nlevents, skb);
630 schedule_work(&wireless_nlevent_work);
631}
632EXPORT_SYMBOL(wireless_send_event);
633
634
635
636/* IW handlers */
637
638struct iw_statistics *get_wireless_stats(struct net_device *dev)
639{
640#ifdef CONFIG_WIRELESS_EXT
641 if ((dev->wireless_handlers != NULL) &&
642 (dev->wireless_handlers->get_wireless_stats != NULL))
643 return dev->wireless_handlers->get_wireless_stats(dev);
644#endif
645
646#ifdef CONFIG_CFG80211_WEXT
36539107 647 if (dev->ieee80211_ptr &&
3d23e349
JB		 648 dev->ieee80211_ptr->wiphy &&
649 dev->ieee80211_ptr->wiphy->wext &&
650 dev->ieee80211_ptr->wiphy->wext->get_wireless_stats)
651 return dev->ieee80211_ptr->wiphy->wext->get_wireless_stats(dev);
652#endif
653
654 /* not found */
655 return NULL;
656}
657
658static int iw_handler_get_iwstats(struct net_device * dev,
659 struct iw_request_info * info,
660 union iwreq_data * wrqu,
661 char * extra)
662{
663 /* Get stats from the driver */
664 struct iw_statistics *stats;
665
666 stats = get_wireless_stats(dev);
667 if (stats) {
668 /* Copy statistics to extra */
669 memcpy(extra, stats, sizeof(struct iw_statistics));
670 wrqu->data.length = sizeof(struct iw_statistics);
671
672 /* Check if we need to clear the updated flag */
673 if (wrqu->data.flags != 0)
674 stats->qual.updated &= ~IW_QUAL_ALL_UPDATED;
675 return 0;
676 } else
677 return -EOPNOTSUPP;
678}
679
680static iw_handler get_handler(struct net_device *dev, unsigned int cmd)
681{
682 /* Don't "optimise" the following variable, it will crash */
683 unsigned int index; /* *MUST* be unsigned */
684 const struct iw_handler_def *handlers = NULL;
685
686#ifdef CONFIG_CFG80211_WEXT
687 if (dev->ieee80211_ptr && dev->ieee80211_ptr->wiphy)
688 handlers = dev->ieee80211_ptr->wiphy->wext;
689#endif
690#ifdef CONFIG_WIRELESS_EXT
691 if (dev->wireless_handlers)
692 handlers = dev->wireless_handlers;
693#endif
694
695 if (!handlers)
696 return NULL;
697
698 /* Try as a standard command */
44608f80 699 index = IW_IOCTL_IDX(cmd);
3d23e349
JB		 700 if (index < handlers->num_standard)
701 return handlers->standard[index];
702
703#ifdef CONFIG_WEXT_PRIV
704 /* Try as a private command */
705 index = cmd - SIOCIWFIRSTPRIV;
706 if (index < handlers->num_private)
707 return handlers->private[index];
708#endif
709
710 /* Not found */
711 return NULL;
712}
713
714static int ioctl_standard_iw_point(struct iw_point *iwp, unsigned int cmd,
715 const struct iw_ioctl_description *descr,
716 iw_handler handler, struct net_device *dev,
717 struct iw_request_info *info)
718{
719 int err, extra_size, user_length = 0, essid_compat = 0;
720 char *extra;
721
722 /* Calculate space needed by arguments. Always allocate
723 * for max space.
724 */
725 extra_size = descr->max_tokens * descr->token_size;
726
727 /* Check need for ESSID compatibility for WE < 21 */
728 switch (cmd) {
84149b0f
DM		 729 case SIOCSIWESSID:
730 case SIOCGIWESSID:
731 case SIOCSIWNICKN:
732 case SIOCGIWNICKN:
733 if (iwp->length == descr->max_tokens + 1)
734 essid_compat = 1;
735 else if (IW_IS_SET(cmd) && (iwp->length != 0)) {
736 char essid[IW_ESSID_MAX_SIZE + 1];
8503bd8c
AV		 737 unsigned int len;
738 len = iwp->length * descr->token_size;
84149b0f 739
8503bd8c
AV		 740 if (len > IW_ESSID_MAX_SIZE)
741 return -EFAULT;
742
743 err = copy_from_user(essid, iwp->pointer, len);
84149b0f
DM		 744 if (err)
745 return -EFAULT;
746
747 if (essid[iwp->length - 1] == '\0')
748 essid_compat = 1;
749 }
750 break;
751 default:
752 break;
753 }
754
755 iwp->length -= essid_compat;
756
757 /* Check what user space is giving us */
758 if (IW_IS_SET(cmd)) {
759 /* Check NULL pointer */
760 if (!iwp->pointer && iwp->length != 0)
761 return -EFAULT;
762 /* Check if number of token fits within bounds */
763 if (iwp->length > descr->max_tokens)
764 return -E2BIG;
765 if (iwp->length < descr->min_tokens)
766 return -EINVAL;
767 } else {
768 /* Check NULL pointer */
769 if (!iwp->pointer)
770 return -EFAULT;
771 /* Save user space buffer size for checking */
772 user_length = iwp->length;
773
774 /* Don't check if user_length > max to allow forward
775 * compatibility. The test user_length < min is
776 * implied by the test at the end.
777 */
778
779 /* Support for very large requests */
780 if ((descr->flags & IW_DESCR_FLAG_NOMAX) &&
781 (user_length > descr->max_tokens)) {
782 /* Allow userspace to GET more than max so
783 * we can support any size GET requests.
784 * There is still a limit : -ENOMEM.
785 */
786 extra_size = user_length * descr->token_size;
787
788 /* Note : user_length is originally a __u16,
789 * and token_size is controlled by us,
790 * so extra_size won't get negative and
791 * won't overflow...
792 */
793 }
794 }
795
796 /* kzalloc() ensures NULL-termination for essid_compat. */
797 extra = kzalloc(extra_size, GFP_KERNEL);
798 if (!extra)
799 return -ENOMEM;
800
801 /* If it is a SET, get all the extra data in here */
802 if (IW_IS_SET(cmd) && (iwp->length != 0)) {
803 if (copy_from_user(extra, iwp->pointer,
804 iwp->length *
805 descr->token_size)) {
806 err = -EFAULT;
807 goto out;
808 }
88f16db7
JB		 809
810 if (cmd == SIOCSIWENCODEEXT) {
811 struct iw_encode_ext *ee = (void *) extra;
812
7ab2485b
JL		 813 if (iwp->length < sizeof(*ee) + ee->key_len) {
814 err = -EFAULT;
815 goto out;
816 }
88f16db7 817 }
84149b0f
DM		 818 }
819
42da2f94
JB		 820 if (IW_IS_GET(cmd) && !(descr->flags & IW_DESCR_FLAG_NOMAX)) {
821 /*
822 * If this is a GET, but not NOMAX, it means that the extra
823 * data is not bounded by userspace, but by max_tokens. Thus
824 * set the length to max_tokens. This matches the extra data
825 * allocation.
826 * The driver should fill it with the number of tokens it
827 * provided, and it may check iwp->length rather than having
828 * knowledge of max_tokens. If the driver doesn't change the
829 * iwp->length, this ioctl just copies back max_token tokens
830 * filled with zeroes. Hopefully the driver isn't claiming
831 * them to be valid data.
832 */
833 iwp->length = descr->max_tokens;
834 }
835
84149b0f
DM		 836 err = handler(dev, info, (union iwreq_data *) iwp, extra);
837
838 iwp->length += essid_compat;
839
840 /* If we have something to return to the user */
841 if (!err && IW_IS_GET(cmd)) {
842 /* Check if there is enough buffer up there */
843 if (user_length < iwp->length) {
844 err = -E2BIG;
845 goto out;
846 }
847
848 if (copy_to_user(iwp->pointer, extra,
849 iwp->length *
850 descr->token_size)) {
851 err = -EFAULT;
852 goto out;
853 }
854 }
855
856 /* Generate an event to notify listeners of the change */
1014eb6e
JT		 857 if ((descr->flags & IW_DESCR_FLAG_EVENT) &&
858 ((err == 0) || (err == -EIWCOMMIT))) {
84149b0f
DM		 859 union iwreq_data *data = (union iwreq_data *) iwp;
860
861 if (descr->flags & IW_DESCR_FLAG_RESTRICT)
862 /* If the event is restricted, don't
863 * export the payload.
864 */
865 wireless_send_event(dev, cmd, data, NULL);
866 else
867 wireless_send_event(dev, cmd, data, extra);
868 }
869
870out:
871 kfree(extra);
872 return err;
873}
874
1da177e4 875/*
3d23e349
JB		 876 * Call the commit handler in the driver
877 * (if exist and if conditions are right)
878 *
879 * Note : our current commit strategy is currently pretty dumb,
880 * but we will be able to improve on that...
881 * The goal is to try to agreagate as many changes as possible
882 * before doing the commit. Drivers that will define a commit handler
883 * are usually those that need a reset after changing parameters, so
884 * we want to minimise the number of reset.
885 * A cool idea is to use a timer : at each "set" command, we re-set the
886 * timer, when the timer eventually fires, we call the driver.
887 * Hopefully, more on that later.
888 *
889 * Also, I'm waiting to see how many people will complain about the
890 * netif_running(dev) test. I'm open on that one...
891 * Hopefully, the driver will remember to do a commit in "open()" ;-)
1da177e4 892 */
3d23e349 893int call_commit_handler(struct net_device *dev)
1da177e4 894{
3d23e349
JB		 895#ifdef CONFIG_WIRELESS_EXT
896 if ((netif_running(dev)) &&
897 (dev->wireless_handlers->standard[0] != NULL))
898 /* Call the commit handler on the driver */
899 return dev->wireless_handlers->standard[0](dev, NULL,
900 NULL, NULL);
901 else
902 return 0; /* Command completed successfully */
903#else
904 /* cfg80211 has no commit */
905 return 0;
906#endif
1da177e4
LT		 907}
908
1da177e4 909/*
295f4a1f 910 * Main IOCTl dispatcher.
1da177e4
LT		 911 * Check the type of IOCTL and call the appropriate wrapper...
912 */
ca1e8bb8
DM		 913static int wireless_process_ioctl(struct net *net, struct ifreq *ifr,
914 unsigned int cmd,
0f5cabba 915 struct iw_request_info *info,
ca1e8bb8
DM		 916 wext_ioctl_func standard,
917 wext_ioctl_func private)
1da177e4 918{
d2911255 919 struct iwreq *iwr = (struct iwreq *) ifr;
1da177e4
LT		 920 struct net_device *dev;
921 iw_handler handler;
922
923 /* Permissions are already checked in dev_ioctl() before calling us.
924 * The copy_to/from_user() of ifr is also dealt with in there */
925
926 /* Make sure the device exist */
881d966b 927 if ((dev = __dev_get_by_name(net, ifr->ifr_name)) == NULL)
1da177e4
LT		 928 return -ENODEV;
929
930 /* A bunch of special cases, then the generic case...
931 * Note that 'cmd' is already filtered in dev_ioctl() with
932 * (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) */
dd8ceabc 933 if (cmd == SIOCGIWSTATS)
0f5cabba 934 return standard(dev, iwr, cmd, info,
ca1e8bb8 935 &iw_handler_get_iwstats);
e71a4783 936
3d23e349 937#ifdef CONFIG_WEXT_PRIV
dd8ceabc 938 if (cmd == SIOCGIWPRIV && dev->wireless_handlers)
0f5cabba 939 return standard(dev, iwr, cmd, info,
3d23e349
JB		 940 iw_handler_get_private);
941#endif
dd8ceabc
JB		 942
943 /* Basic check */
944 if (!netif_device_present(dev))
945 return -ENODEV;
946
947 /* New driver API : try to find the handler */
948 handler = get_handler(dev, cmd);
949 if (handler) {
950 /* Standard and private are not the same */
951 if (cmd < SIOCIWFIRSTPRIV)
0f5cabba 952 return standard(dev, iwr, cmd, info, handler);
3d23e349 953 else if (private)
0f5cabba 954 return private(dev, iwr, cmd, info, handler);
1da177e4 955 }
dd8ceabc 956 /* Old driver API : call driver ioctl handler */
148bc430
SH		 957 if (dev->netdev_ops->ndo_do_ioctl)
958 return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
dd8ceabc 959 return -EOPNOTSUPP;
1da177e4
LT		 960}
961
67dd7608
DM		 962/* If command is `set a parameter', or `get the encoding parameters',
963 * check if the user has the right to do it.
964 */
965static int wext_permission_check(unsigned int cmd)
966{
f64f9e71
JP		 967 if ((IW_IS_SET(cmd) || cmd == SIOCGIWENCODE ||
968 cmd == SIOCGIWENCODEEXT) &&
969 !capable(CAP_NET_ADMIN))
67dd7608
DM		 970 return -EPERM;
971
972 return 0;
973}
974
295f4a1f 975/* entry point from dev ioctl */
a67fa76d 976static int wext_ioctl_dispatch(struct net *net, struct ifreq *ifr,
0f5cabba 977 unsigned int cmd, struct iw_request_info *info,
a67fa76d
DM		 978 wext_ioctl_func standard,
979 wext_ioctl_func private)
295f4a1f 980{
67dd7608 981 int ret = wext_permission_check(cmd);
295f4a1f 982
67dd7608
DM		 983 if (ret)
984 return ret;
dd8ceabc 985
881d966b 986 dev_load(net, ifr->ifr_name);
295f4a1f 987 rtnl_lock();
0f5cabba 988 ret = wireless_process_ioctl(net, ifr, cmd, info, standard, private);
295f4a1f 989 rtnl_unlock();
a67fa76d
DM		 990
991 return ret;
992}
993
3d23e349
JB		 994/*
995 * Wrapper to call a standard Wireless Extension handler.
996 * We do various checks and also take care of moving data between
997 * user space and kernel space.
998 */
999static int ioctl_standard_call(struct net_device * dev,
1000 struct iwreq *iwr,
1001 unsigned int cmd,
1002 struct iw_request_info *info,
1003 iw_handler handler)
1004{
1005 const struct iw_ioctl_description * descr;
1006 int ret = -EINVAL;
1007
1008 /* Get the description of the IOCTL */
44608f80 1009 if (IW_IOCTL_IDX(cmd) >= standard_ioctl_num)
3d23e349 1010 return -EOPNOTSUPP;
44608f80 1011 descr = &(standard_ioctl[IW_IOCTL_IDX(cmd)]);
3d23e349
JB		 1012
1013 /* Check if we have a pointer to user space data or not */
1014 if (descr->header_type != IW_HEADER_TYPE_POINT) {
1015
1016 /* No extra arguments. Trivial to handle */
1017 ret = handler(dev, info, &(iwr->u), NULL);
1018
1019 /* Generate an event to notify listeners of the change */
1020 if ((descr->flags & IW_DESCR_FLAG_EVENT) &&
1021 ((ret == 0) || (ret == -EIWCOMMIT)))
1022 wireless_send_event(dev, cmd, &(iwr->u), NULL);
1023 } else {
1024 ret = ioctl_standard_iw_point(&iwr->u.data, cmd, descr,
1025 handler, dev, info);
1026 }
1027
1028 /* Call commit handler if needed and defined */
1029 if (ret == -EIWCOMMIT)
1030 ret = call_commit_handler(dev);
1031
1032 /* Here, we will generate the appropriate event if needed */
1033
1034 return ret;
1035}
1036
1037
a67fa76d
DM		 1038int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd,
1039 void __user *arg)
1040{
0f5cabba
DM		 1041 struct iw_request_info info = { .cmd = cmd, .flags = 0 };
1042 int ret;
a67fa76d 1043
0f5cabba
DM		 1044 ret = wext_ioctl_dispatch(net, ifr, cmd, &info,
1045 ioctl_standard_call,
1046 ioctl_private_call);
a67fa76d
DM		 1047 if (ret >= 0 &&
1048 IW_IS_GET(cmd) &&
1049 copy_to_user(arg, ifr, sizeof(struct iwreq)))
295f4a1f 1050 return -EFAULT;
a67fa76d 1051
295f4a1f
JB		 1052 return ret;
1053}
711e2c33 1054
87de87d5
DM		 1055#ifdef CONFIG_COMPAT
1056static int compat_standard_call(struct net_device *dev,
1057 struct iwreq *iwr,
1058 unsigned int cmd,
0f5cabba 1059 struct iw_request_info *info,
87de87d5
DM		 1060 iw_handler handler)
1061{
1062 const struct iw_ioctl_description *descr;
1063 struct compat_iw_point *iwp_compat;
87de87d5
DM		 1064 struct iw_point iwp;
1065 int err;
1066
44608f80 1067 descr = standard_ioctl + IW_IOCTL_IDX(cmd);
87de87d5
DM		 1068
1069 if (descr->header_type != IW_HEADER_TYPE_POINT)
0f5cabba 1070 return ioctl_standard_call(dev, iwr, cmd, info, handler);
87de87d5
DM		 1071
1072 iwp_compat = (struct compat_iw_point *) &iwr->u.data;
1073 iwp.pointer = compat_ptr(iwp_compat->pointer);
1074 iwp.length = iwp_compat->length;
1075 iwp.flags = iwp_compat->flags;
1076
0f5cabba 1077 err = ioctl_standard_iw_point(&iwp, cmd, descr, handler, dev, info);
87de87d5
DM		 1078
1079 iwp_compat->pointer = ptr_to_compat(iwp.pointer);
1080 iwp_compat->length = iwp.length;
1081 iwp_compat->flags = iwp.flags;
1082
1083 return err;
1084}
1085
87de87d5
DM		 1086int compat_wext_handle_ioctl(struct net *net, unsigned int cmd,
1087 unsigned long arg)
1088{
1089 void __user *argp = (void __user *)arg;
0f5cabba 1090 struct iw_request_info info;
87de87d5
DM		 1091 struct iwreq iwr;
1092 char *colon;
1093 int ret;
1094
1095 if (copy_from_user(&iwr, argp, sizeof(struct iwreq)))
1096 return -EFAULT;
1097
1098 iwr.ifr_name[IFNAMSIZ-1] = 0;
1099 colon = strchr(iwr.ifr_name, ':');
1100 if (colon)
1101 *colon = 0;
1102
0f5cabba
DM		 1103 info.cmd = cmd;
1104 info.flags = IW_REQUEST_FLAG_COMPAT;
1105
1106 ret = wext_ioctl_dispatch(net, (struct ifreq *) &iwr, cmd, &info,
87de87d5
DM		 1107 compat_standard_call,
1108 compat_private_call);
1109
1110 if (ret >= 0 &&
1111 IW_IS_GET(cmd) &&
1112 copy_to_user(argp, &iwr, sizeof(struct iwreq)))
1113 return -EFAULT;
1114
1115 return ret;
1116}
1117#endif
kernel source for telekom puls (alcatel/mediatek)