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mac80211: implement hardware offload for remain-on-channel
[mirror_ubuntu-artful-kernel.git] / net / mac80211 / cfg.c
1 /*
2 * mac80211 configuration hooks for cfg80211
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This file is GPLv2 as found in COPYING.
7 */
8
9 #include <linux/ieee80211.h>
10 #include <linux/nl80211.h>
11 #include <linux/rtnetlink.h>
12 #include <linux/slab.h>
13 #include <net/net_namespace.h>
14 #include <linux/rcupdate.h>
15 #include <net/cfg80211.h>
16 #include "ieee80211_i.h"
17 #include "driver-ops.h"
18 #include "cfg.h"
19 #include "rate.h"
20 #include "mesh.h"
21
22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
23 enum nl80211_iftype type,
24 u32 *flags,
25 struct vif_params *params)
26 {
27 struct ieee80211_local *local = wiphy_priv(wiphy);
28 struct net_device *dev;
29 struct ieee80211_sub_if_data *sdata;
30 int err;
31
32 err = ieee80211_if_add(local, name, &dev, type, params);
33 if (err)
34 return ERR_PTR(err);
35
36 if (type == NL80211_IFTYPE_MONITOR && flags) {
37 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
38 sdata->u.mntr_flags = *flags;
39 }
40
41 return dev;
42 }
43
44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
45 {
46 ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
47
48 return 0;
49 }
50
51 static int ieee80211_change_iface(struct wiphy *wiphy,
52 struct net_device *dev,
53 enum nl80211_iftype type, u32 *flags,
54 struct vif_params *params)
55 {
56 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
57 int ret;
58
59 ret = ieee80211_if_change_type(sdata, type);
60 if (ret)
61 return ret;
62
63 if (type == NL80211_IFTYPE_AP_VLAN &&
64 params && params->use_4addr == 0)
65 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
66 else if (type == NL80211_IFTYPE_STATION &&
67 params && params->use_4addr >= 0)
68 sdata->u.mgd.use_4addr = params->use_4addr;
69
70 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
71 struct ieee80211_local *local = sdata->local;
72
73 if (ieee80211_sdata_running(sdata)) {
74 /*
75 * Prohibit MONITOR_FLAG_COOK_FRAMES to be
76 * changed while the interface is up.
77 * Else we would need to add a lot of cruft
78 * to update everything:
79 * cooked_mntrs, monitor and all fif_* counters
80 * reconfigure hardware
81 */
82 if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
83 (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
84 return -EBUSY;
85
86 ieee80211_adjust_monitor_flags(sdata, -1);
87 sdata->u.mntr_flags = *flags;
88 ieee80211_adjust_monitor_flags(sdata, 1);
89
90 ieee80211_configure_filter(local);
91 } else {
92 /*
93 * Because the interface is down, ieee80211_do_stop
94 * and ieee80211_do_open take care of "everything"
95 * mentioned in the comment above.
96 */
97 sdata->u.mntr_flags = *flags;
98 }
99 }
100
101 return 0;
102 }
103
104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
105 u8 key_idx, bool pairwise, const u8 *mac_addr,
106 struct key_params *params)
107 {
108 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
109 struct sta_info *sta = NULL;
110 struct ieee80211_key *key;
111 int err;
112
113 if (!ieee80211_sdata_running(sdata))
114 return -ENETDOWN;
115
116 /* reject WEP and TKIP keys if WEP failed to initialize */
117 switch (params->cipher) {
118 case WLAN_CIPHER_SUITE_WEP40:
119 case WLAN_CIPHER_SUITE_TKIP:
120 case WLAN_CIPHER_SUITE_WEP104:
121 if (IS_ERR(sdata->local->wep_tx_tfm))
122 return -EINVAL;
123 break;
124 default:
125 break;
126 }
127
128 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
129 params->key, params->seq_len, params->seq);
130 if (IS_ERR(key))
131 return PTR_ERR(key);
132
133 if (pairwise)
134 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
135
136 mutex_lock(&sdata->local->sta_mtx);
137
138 if (mac_addr) {
139 sta = sta_info_get_bss(sdata, mac_addr);
140 if (!sta) {
141 ieee80211_key_free(sdata->local, key);
142 err = -ENOENT;
143 goto out_unlock;
144 }
145 }
146
147 err = ieee80211_key_link(key, sdata, sta);
148 if (err)
149 ieee80211_key_free(sdata->local, key);
150
151 out_unlock:
152 mutex_unlock(&sdata->local->sta_mtx);
153
154 return err;
155 }
156
157 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
158 u8 key_idx, bool pairwise, const u8 *mac_addr)
159 {
160 struct ieee80211_sub_if_data *sdata;
161 struct sta_info *sta;
162 int ret;
163
164 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
165
166 mutex_lock(&sdata->local->sta_mtx);
167
168 if (mac_addr) {
169 ret = -ENOENT;
170
171 sta = sta_info_get_bss(sdata, mac_addr);
172 if (!sta)
173 goto out_unlock;
174
175 if (pairwise) {
176 if (sta->ptk) {
177 ieee80211_key_free(sdata->local, sta->ptk);
178 ret = 0;
179 }
180 } else {
181 if (sta->gtk[key_idx]) {
182 ieee80211_key_free(sdata->local,
183 sta->gtk[key_idx]);
184 ret = 0;
185 }
186 }
187
188 goto out_unlock;
189 }
190
191 if (!sdata->keys[key_idx]) {
192 ret = -ENOENT;
193 goto out_unlock;
194 }
195
196 ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
197 WARN_ON(sdata->keys[key_idx]);
198
199 ret = 0;
200 out_unlock:
201 mutex_unlock(&sdata->local->sta_mtx);
202
203 return ret;
204 }
205
206 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
207 u8 key_idx, bool pairwise, const u8 *mac_addr,
208 void *cookie,
209 void (*callback)(void *cookie,
210 struct key_params *params))
211 {
212 struct ieee80211_sub_if_data *sdata;
213 struct sta_info *sta = NULL;
214 u8 seq[6] = {0};
215 struct key_params params;
216 struct ieee80211_key *key = NULL;
217 u32 iv32;
218 u16 iv16;
219 int err = -ENOENT;
220
221 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
222
223 rcu_read_lock();
224
225 if (mac_addr) {
226 sta = sta_info_get_bss(sdata, mac_addr);
227 if (!sta)
228 goto out;
229
230 if (pairwise)
231 key = sta->ptk;
232 else if (key_idx < NUM_DEFAULT_KEYS)
233 key = sta->gtk[key_idx];
234 } else
235 key = sdata->keys[key_idx];
236
237 if (!key)
238 goto out;
239
240 memset(&params, 0, sizeof(params));
241
242 params.cipher = key->conf.cipher;
243
244 switch (key->conf.cipher) {
245 case WLAN_CIPHER_SUITE_TKIP:
246 iv32 = key->u.tkip.tx.iv32;
247 iv16 = key->u.tkip.tx.iv16;
248
249 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
250 drv_get_tkip_seq(sdata->local,
251 key->conf.hw_key_idx,
252 &iv32, &iv16);
253
254 seq[0] = iv16 & 0xff;
255 seq[1] = (iv16 >> 8) & 0xff;
256 seq[2] = iv32 & 0xff;
257 seq[3] = (iv32 >> 8) & 0xff;
258 seq[4] = (iv32 >> 16) & 0xff;
259 seq[5] = (iv32 >> 24) & 0xff;
260 params.seq = seq;
261 params.seq_len = 6;
262 break;
263 case WLAN_CIPHER_SUITE_CCMP:
264 seq[0] = key->u.ccmp.tx_pn[5];
265 seq[1] = key->u.ccmp.tx_pn[4];
266 seq[2] = key->u.ccmp.tx_pn[3];
267 seq[3] = key->u.ccmp.tx_pn[2];
268 seq[4] = key->u.ccmp.tx_pn[1];
269 seq[5] = key->u.ccmp.tx_pn[0];
270 params.seq = seq;
271 params.seq_len = 6;
272 break;
273 case WLAN_CIPHER_SUITE_AES_CMAC:
274 seq[0] = key->u.aes_cmac.tx_pn[5];
275 seq[1] = key->u.aes_cmac.tx_pn[4];
276 seq[2] = key->u.aes_cmac.tx_pn[3];
277 seq[3] = key->u.aes_cmac.tx_pn[2];
278 seq[4] = key->u.aes_cmac.tx_pn[1];
279 seq[5] = key->u.aes_cmac.tx_pn[0];
280 params.seq = seq;
281 params.seq_len = 6;
282 break;
283 }
284
285 params.key = key->conf.key;
286 params.key_len = key->conf.keylen;
287
288 callback(cookie, &params);
289 err = 0;
290
291 out:
292 rcu_read_unlock();
293 return err;
294 }
295
296 static int ieee80211_config_default_key(struct wiphy *wiphy,
297 struct net_device *dev,
298 u8 key_idx, bool uni,
299 bool multi)
300 {
301 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
302
303 ieee80211_set_default_key(sdata, key_idx, uni, multi);
304
305 return 0;
306 }
307
308 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
309 struct net_device *dev,
310 u8 key_idx)
311 {
312 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
313
314 ieee80211_set_default_mgmt_key(sdata, key_idx);
315
316 return 0;
317 }
318
319 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
320 {
321 struct ieee80211_sub_if_data *sdata = sta->sdata;
322
323 sinfo->generation = sdata->local->sta_generation;
324
325 sinfo->filled = STATION_INFO_INACTIVE_TIME |
326 STATION_INFO_RX_BYTES |
327 STATION_INFO_TX_BYTES |
328 STATION_INFO_RX_PACKETS |
329 STATION_INFO_TX_PACKETS |
330 STATION_INFO_TX_RETRIES |
331 STATION_INFO_TX_FAILED |
332 STATION_INFO_TX_BITRATE |
333 STATION_INFO_RX_DROP_MISC;
334
335 sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
336 sinfo->rx_bytes = sta->rx_bytes;
337 sinfo->tx_bytes = sta->tx_bytes;
338 sinfo->rx_packets = sta->rx_packets;
339 sinfo->tx_packets = sta->tx_packets;
340 sinfo->tx_retries = sta->tx_retry_count;
341 sinfo->tx_failed = sta->tx_retry_failed;
342 sinfo->rx_dropped_misc = sta->rx_dropped;
343
344 if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
345 (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
346 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
347 sinfo->signal = (s8)sta->last_signal;
348 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
349 }
350
351 sinfo->txrate.flags = 0;
352 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
353 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
354 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
355 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
356 if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
357 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
358
359 if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) {
360 struct ieee80211_supported_band *sband;
361 sband = sta->local->hw.wiphy->bands[
362 sta->local->hw.conf.channel->band];
363 sinfo->txrate.legacy =
364 sband->bitrates[sta->last_tx_rate.idx].bitrate;
365 } else
366 sinfo->txrate.mcs = sta->last_tx_rate.idx;
367
368 if (ieee80211_vif_is_mesh(&sdata->vif)) {
369 #ifdef CONFIG_MAC80211_MESH
370 sinfo->filled |= STATION_INFO_LLID |
371 STATION_INFO_PLID |
372 STATION_INFO_PLINK_STATE;
373
374 sinfo->llid = le16_to_cpu(sta->llid);
375 sinfo->plid = le16_to_cpu(sta->plid);
376 sinfo->plink_state = sta->plink_state;
377 #endif
378 }
379 }
380
381
382 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
383 int idx, u8 *mac, struct station_info *sinfo)
384 {
385 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
386 struct sta_info *sta;
387 int ret = -ENOENT;
388
389 rcu_read_lock();
390
391 sta = sta_info_get_by_idx(sdata, idx);
392 if (sta) {
393 ret = 0;
394 memcpy(mac, sta->sta.addr, ETH_ALEN);
395 sta_set_sinfo(sta, sinfo);
396 }
397
398 rcu_read_unlock();
399
400 return ret;
401 }
402
403 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
404 int idx, struct survey_info *survey)
405 {
406 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
407
408 return drv_get_survey(local, idx, survey);
409 }
410
411 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
412 u8 *mac, struct station_info *sinfo)
413 {
414 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
415 struct sta_info *sta;
416 int ret = -ENOENT;
417
418 rcu_read_lock();
419
420 sta = sta_info_get_bss(sdata, mac);
421 if (sta) {
422 ret = 0;
423 sta_set_sinfo(sta, sinfo);
424 }
425
426 rcu_read_unlock();
427
428 return ret;
429 }
430
431 /*
432 * This handles both adding a beacon and setting new beacon info
433 */
434 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
435 struct beacon_parameters *params)
436 {
437 struct beacon_data *new, *old;
438 int new_head_len, new_tail_len;
439 int size;
440 int err = -EINVAL;
441
442 old = sdata->u.ap.beacon;
443
444 /* head must not be zero-length */
445 if (params->head && !params->head_len)
446 return -EINVAL;
447
448 /*
449 * This is a kludge. beacon interval should really be part
450 * of the beacon information.
451 */
452 if (params->interval &&
453 (sdata->vif.bss_conf.beacon_int != params->interval)) {
454 sdata->vif.bss_conf.beacon_int = params->interval;
455 ieee80211_bss_info_change_notify(sdata,
456 BSS_CHANGED_BEACON_INT);
457 }
458
459 /* Need to have a beacon head if we don't have one yet */
460 if (!params->head && !old)
461 return err;
462
463 /* sorry, no way to start beaconing without dtim period */
464 if (!params->dtim_period && !old)
465 return err;
466
467 /* new or old head? */
468 if (params->head)
469 new_head_len = params->head_len;
470 else
471 new_head_len = old->head_len;
472
473 /* new or old tail? */
474 if (params->tail || !old)
475 /* params->tail_len will be zero for !params->tail */
476 new_tail_len = params->tail_len;
477 else
478 new_tail_len = old->tail_len;
479
480 size = sizeof(*new) + new_head_len + new_tail_len;
481
482 new = kzalloc(size, GFP_KERNEL);
483 if (!new)
484 return -ENOMEM;
485
486 /* start filling the new info now */
487
488 /* new or old dtim period? */
489 if (params->dtim_period)
490 new->dtim_period = params->dtim_period;
491 else
492 new->dtim_period = old->dtim_period;
493
494 /*
495 * pointers go into the block we allocated,
496 * memory is | beacon_data | head | tail |
497 */
498 new->head = ((u8 *) new) + sizeof(*new);
499 new->tail = new->head + new_head_len;
500 new->head_len = new_head_len;
501 new->tail_len = new_tail_len;
502
503 /* copy in head */
504 if (params->head)
505 memcpy(new->head, params->head, new_head_len);
506 else
507 memcpy(new->head, old->head, new_head_len);
508
509 /* copy in optional tail */
510 if (params->tail)
511 memcpy(new->tail, params->tail, new_tail_len);
512 else
513 if (old)
514 memcpy(new->tail, old->tail, new_tail_len);
515
516 sdata->vif.bss_conf.dtim_period = new->dtim_period;
517
518 rcu_assign_pointer(sdata->u.ap.beacon, new);
519
520 synchronize_rcu();
521
522 kfree(old);
523
524 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
525 BSS_CHANGED_BEACON);
526 return 0;
527 }
528
529 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
530 struct beacon_parameters *params)
531 {
532 struct ieee80211_sub_if_data *sdata;
533 struct beacon_data *old;
534
535 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
536
537 old = sdata->u.ap.beacon;
538
539 if (old)
540 return -EALREADY;
541
542 return ieee80211_config_beacon(sdata, params);
543 }
544
545 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
546 struct beacon_parameters *params)
547 {
548 struct ieee80211_sub_if_data *sdata;
549 struct beacon_data *old;
550
551 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
552
553 old = sdata->u.ap.beacon;
554
555 if (!old)
556 return -ENOENT;
557
558 return ieee80211_config_beacon(sdata, params);
559 }
560
561 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
562 {
563 struct ieee80211_sub_if_data *sdata;
564 struct beacon_data *old;
565
566 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
567
568 old = sdata->u.ap.beacon;
569
570 if (!old)
571 return -ENOENT;
572
573 rcu_assign_pointer(sdata->u.ap.beacon, NULL);
574 synchronize_rcu();
575 kfree(old);
576
577 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
578 return 0;
579 }
580
581 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
582 struct iapp_layer2_update {
583 u8 da[ETH_ALEN]; /* broadcast */
584 u8 sa[ETH_ALEN]; /* STA addr */
585 __be16 len; /* 6 */
586 u8 dsap; /* 0 */
587 u8 ssap; /* 0 */
588 u8 control;
589 u8 xid_info[3];
590 } __packed;
591
592 static void ieee80211_send_layer2_update(struct sta_info *sta)
593 {
594 struct iapp_layer2_update *msg;
595 struct sk_buff *skb;
596
597 /* Send Level 2 Update Frame to update forwarding tables in layer 2
598 * bridge devices */
599
600 skb = dev_alloc_skb(sizeof(*msg));
601 if (!skb)
602 return;
603 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
604
605 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
606 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
607
608 memset(msg->da, 0xff, ETH_ALEN);
609 memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
610 msg->len = htons(6);
611 msg->dsap = 0;
612 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */
613 msg->control = 0xaf; /* XID response lsb.1111F101.
614 * F=0 (no poll command; unsolicited frame) */
615 msg->xid_info[0] = 0x81; /* XID format identifier */
616 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */
617 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */
618
619 skb->dev = sta->sdata->dev;
620 skb->protocol = eth_type_trans(skb, sta->sdata->dev);
621 memset(skb->cb, 0, sizeof(skb->cb));
622 netif_rx_ni(skb);
623 }
624
625 static void sta_apply_parameters(struct ieee80211_local *local,
626 struct sta_info *sta,
627 struct station_parameters *params)
628 {
629 unsigned long flags;
630 u32 rates;
631 int i, j;
632 struct ieee80211_supported_band *sband;
633 struct ieee80211_sub_if_data *sdata = sta->sdata;
634 u32 mask, set;
635
636 sband = local->hw.wiphy->bands[local->oper_channel->band];
637
638 spin_lock_irqsave(&sta->flaglock, flags);
639 mask = params->sta_flags_mask;
640 set = params->sta_flags_set;
641
642 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
643 sta->flags &= ~WLAN_STA_AUTHORIZED;
644 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
645 sta->flags |= WLAN_STA_AUTHORIZED;
646 }
647
648 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
649 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
650 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
651 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
652 }
653
654 if (mask & BIT(NL80211_STA_FLAG_WME)) {
655 sta->flags &= ~WLAN_STA_WME;
656 if (set & BIT(NL80211_STA_FLAG_WME))
657 sta->flags |= WLAN_STA_WME;
658 }
659
660 if (mask & BIT(NL80211_STA_FLAG_MFP)) {
661 sta->flags &= ~WLAN_STA_MFP;
662 if (set & BIT(NL80211_STA_FLAG_MFP))
663 sta->flags |= WLAN_STA_MFP;
664 }
665 spin_unlock_irqrestore(&sta->flaglock, flags);
666
667 /*
668 * cfg80211 validates this (1-2007) and allows setting the AID
669 * only when creating a new station entry
670 */
671 if (params->aid)
672 sta->sta.aid = params->aid;
673
674 /*
675 * FIXME: updating the following information is racy when this
676 * function is called from ieee80211_change_station().
677 * However, all this information should be static so
678 * maybe we should just reject attemps to change it.
679 */
680
681 if (params->listen_interval >= 0)
682 sta->listen_interval = params->listen_interval;
683
684 if (params->supported_rates) {
685 rates = 0;
686
687 for (i = 0; i < params->supported_rates_len; i++) {
688 int rate = (params->supported_rates[i] & 0x7f) * 5;
689 for (j = 0; j < sband->n_bitrates; j++) {
690 if (sband->bitrates[j].bitrate == rate)
691 rates |= BIT(j);
692 }
693 }
694 sta->sta.supp_rates[local->oper_channel->band] = rates;
695 }
696
697 if (params->ht_capa)
698 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
699 params->ht_capa,
700 &sta->sta.ht_cap);
701
702 if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) {
703 switch (params->plink_action) {
704 case PLINK_ACTION_OPEN:
705 mesh_plink_open(sta);
706 break;
707 case PLINK_ACTION_BLOCK:
708 mesh_plink_block(sta);
709 break;
710 }
711 }
712 }
713
714 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
715 u8 *mac, struct station_parameters *params)
716 {
717 struct ieee80211_local *local = wiphy_priv(wiphy);
718 struct sta_info *sta;
719 struct ieee80211_sub_if_data *sdata;
720 int err;
721 int layer2_update;
722
723 if (params->vlan) {
724 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
725
726 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
727 sdata->vif.type != NL80211_IFTYPE_AP)
728 return -EINVAL;
729 } else
730 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
731
732 if (compare_ether_addr(mac, sdata->vif.addr) == 0)
733 return -EINVAL;
734
735 if (is_multicast_ether_addr(mac))
736 return -EINVAL;
737
738 sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
739 if (!sta)
740 return -ENOMEM;
741
742 sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
743
744 sta_apply_parameters(local, sta, params);
745
746 rate_control_rate_init(sta);
747
748 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
749 sdata->vif.type == NL80211_IFTYPE_AP;
750
751 err = sta_info_insert_rcu(sta);
752 if (err) {
753 rcu_read_unlock();
754 return err;
755 }
756
757 if (layer2_update)
758 ieee80211_send_layer2_update(sta);
759
760 rcu_read_unlock();
761
762 return 0;
763 }
764
765 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
766 u8 *mac)
767 {
768 struct ieee80211_local *local = wiphy_priv(wiphy);
769 struct ieee80211_sub_if_data *sdata;
770
771 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
772
773 if (mac)
774 return sta_info_destroy_addr_bss(sdata, mac);
775
776 sta_info_flush(local, sdata);
777 return 0;
778 }
779
780 static int ieee80211_change_station(struct wiphy *wiphy,
781 struct net_device *dev,
782 u8 *mac,
783 struct station_parameters *params)
784 {
785 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
786 struct ieee80211_local *local = wiphy_priv(wiphy);
787 struct sta_info *sta;
788 struct ieee80211_sub_if_data *vlansdata;
789
790 rcu_read_lock();
791
792 sta = sta_info_get_bss(sdata, mac);
793 if (!sta) {
794 rcu_read_unlock();
795 return -ENOENT;
796 }
797
798 if (params->vlan && params->vlan != sta->sdata->dev) {
799 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
800
801 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
802 vlansdata->vif.type != NL80211_IFTYPE_AP) {
803 rcu_read_unlock();
804 return -EINVAL;
805 }
806
807 if (params->vlan->ieee80211_ptr->use_4addr) {
808 if (vlansdata->u.vlan.sta) {
809 rcu_read_unlock();
810 return -EBUSY;
811 }
812
813 rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
814 }
815
816 sta->sdata = vlansdata;
817 ieee80211_send_layer2_update(sta);
818 }
819
820 sta_apply_parameters(local, sta, params);
821
822 rcu_read_unlock();
823
824 return 0;
825 }
826
827 #ifdef CONFIG_MAC80211_MESH
828 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
829 u8 *dst, u8 *next_hop)
830 {
831 struct ieee80211_sub_if_data *sdata;
832 struct mesh_path *mpath;
833 struct sta_info *sta;
834 int err;
835
836 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
837
838 rcu_read_lock();
839 sta = sta_info_get(sdata, next_hop);
840 if (!sta) {
841 rcu_read_unlock();
842 return -ENOENT;
843 }
844
845 err = mesh_path_add(dst, sdata);
846 if (err) {
847 rcu_read_unlock();
848 return err;
849 }
850
851 mpath = mesh_path_lookup(dst, sdata);
852 if (!mpath) {
853 rcu_read_unlock();
854 return -ENXIO;
855 }
856 mesh_path_fix_nexthop(mpath, sta);
857
858 rcu_read_unlock();
859 return 0;
860 }
861
862 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
863 u8 *dst)
864 {
865 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
866
867 if (dst)
868 return mesh_path_del(dst, sdata);
869
870 mesh_path_flush(sdata);
871 return 0;
872 }
873
874 static int ieee80211_change_mpath(struct wiphy *wiphy,
875 struct net_device *dev,
876 u8 *dst, u8 *next_hop)
877 {
878 struct ieee80211_sub_if_data *sdata;
879 struct mesh_path *mpath;
880 struct sta_info *sta;
881
882 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
883
884 rcu_read_lock();
885
886 sta = sta_info_get(sdata, next_hop);
887 if (!sta) {
888 rcu_read_unlock();
889 return -ENOENT;
890 }
891
892 mpath = mesh_path_lookup(dst, sdata);
893 if (!mpath) {
894 rcu_read_unlock();
895 return -ENOENT;
896 }
897
898 mesh_path_fix_nexthop(mpath, sta);
899
900 rcu_read_unlock();
901 return 0;
902 }
903
904 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
905 struct mpath_info *pinfo)
906 {
907 if (mpath->next_hop)
908 memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN);
909 else
910 memset(next_hop, 0, ETH_ALEN);
911
912 pinfo->generation = mesh_paths_generation;
913
914 pinfo->filled = MPATH_INFO_FRAME_QLEN |
915 MPATH_INFO_SN |
916 MPATH_INFO_METRIC |
917 MPATH_INFO_EXPTIME |
918 MPATH_INFO_DISCOVERY_TIMEOUT |
919 MPATH_INFO_DISCOVERY_RETRIES |
920 MPATH_INFO_FLAGS;
921
922 pinfo->frame_qlen = mpath->frame_queue.qlen;
923 pinfo->sn = mpath->sn;
924 pinfo->metric = mpath->metric;
925 if (time_before(jiffies, mpath->exp_time))
926 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
927 pinfo->discovery_timeout =
928 jiffies_to_msecs(mpath->discovery_timeout);
929 pinfo->discovery_retries = mpath->discovery_retries;
930 pinfo->flags = 0;
931 if (mpath->flags & MESH_PATH_ACTIVE)
932 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
933 if (mpath->flags & MESH_PATH_RESOLVING)
934 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
935 if (mpath->flags & MESH_PATH_SN_VALID)
936 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
937 if (mpath->flags & MESH_PATH_FIXED)
938 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
939 if (mpath->flags & MESH_PATH_RESOLVING)
940 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
941
942 pinfo->flags = mpath->flags;
943 }
944
945 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
946 u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
947
948 {
949 struct ieee80211_sub_if_data *sdata;
950 struct mesh_path *mpath;
951
952 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
953
954 rcu_read_lock();
955 mpath = mesh_path_lookup(dst, sdata);
956 if (!mpath) {
957 rcu_read_unlock();
958 return -ENOENT;
959 }
960 memcpy(dst, mpath->dst, ETH_ALEN);
961 mpath_set_pinfo(mpath, next_hop, pinfo);
962 rcu_read_unlock();
963 return 0;
964 }
965
966 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
967 int idx, u8 *dst, u8 *next_hop,
968 struct mpath_info *pinfo)
969 {
970 struct ieee80211_sub_if_data *sdata;
971 struct mesh_path *mpath;
972
973 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
974
975 rcu_read_lock();
976 mpath = mesh_path_lookup_by_idx(idx, sdata);
977 if (!mpath) {
978 rcu_read_unlock();
979 return -ENOENT;
980 }
981 memcpy(dst, mpath->dst, ETH_ALEN);
982 mpath_set_pinfo(mpath, next_hop, pinfo);
983 rcu_read_unlock();
984 return 0;
985 }
986
987 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
988 struct net_device *dev,
989 struct mesh_config *conf)
990 {
991 struct ieee80211_sub_if_data *sdata;
992 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
993
994 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
995 return 0;
996 }
997
998 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
999 {
1000 return (mask >> (parm-1)) & 0x1;
1001 }
1002
1003 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1004 const struct mesh_setup *setup)
1005 {
1006 u8 *new_ie;
1007 const u8 *old_ie;
1008
1009 /* first allocate the new vendor information element */
1010 new_ie = NULL;
1011 old_ie = ifmsh->vendor_ie;
1012
1013 ifmsh->vendor_ie_len = setup->vendor_ie_len;
1014 if (setup->vendor_ie_len) {
1015 new_ie = kmemdup(setup->vendor_ie, setup->vendor_ie_len,
1016 GFP_KERNEL);
1017 if (!new_ie)
1018 return -ENOMEM;
1019 }
1020
1021 /* now copy the rest of the setup parameters */
1022 ifmsh->mesh_id_len = setup->mesh_id_len;
1023 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1024 ifmsh->mesh_pp_id = setup->path_sel_proto;
1025 ifmsh->mesh_pm_id = setup->path_metric;
1026 ifmsh->vendor_ie = new_ie;
1027
1028 kfree(old_ie);
1029
1030 return 0;
1031 }
1032
1033 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1034 struct net_device *dev, u32 mask,
1035 const struct mesh_config *nconf)
1036 {
1037 struct mesh_config *conf;
1038 struct ieee80211_sub_if_data *sdata;
1039 struct ieee80211_if_mesh *ifmsh;
1040
1041 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1042 ifmsh = &sdata->u.mesh;
1043
1044 /* Set the config options which we are interested in setting */
1045 conf = &(sdata->u.mesh.mshcfg);
1046 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1047 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1048 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1049 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1050 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1051 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1052 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1053 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1054 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1055 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1056 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1057 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1058 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1059 conf->dot11MeshTTL = nconf->element_ttl;
1060 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1061 conf->auto_open_plinks = nconf->auto_open_plinks;
1062 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1063 conf->dot11MeshHWMPmaxPREQretries =
1064 nconf->dot11MeshHWMPmaxPREQretries;
1065 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1066 conf->path_refresh_time = nconf->path_refresh_time;
1067 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1068 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1069 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1070 conf->dot11MeshHWMPactivePathTimeout =
1071 nconf->dot11MeshHWMPactivePathTimeout;
1072 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1073 conf->dot11MeshHWMPpreqMinInterval =
1074 nconf->dot11MeshHWMPpreqMinInterval;
1075 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1076 mask))
1077 conf->dot11MeshHWMPnetDiameterTraversalTime =
1078 nconf->dot11MeshHWMPnetDiameterTraversalTime;
1079 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1080 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1081 ieee80211_mesh_root_setup(ifmsh);
1082 }
1083 return 0;
1084 }
1085
1086 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1087 const struct mesh_config *conf,
1088 const struct mesh_setup *setup)
1089 {
1090 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1091 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1092 int err;
1093
1094 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1095 err = copy_mesh_setup(ifmsh, setup);
1096 if (err)
1097 return err;
1098 ieee80211_start_mesh(sdata);
1099
1100 return 0;
1101 }
1102
1103 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1104 {
1105 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1106
1107 ieee80211_stop_mesh(sdata);
1108
1109 return 0;
1110 }
1111 #endif
1112
1113 static int ieee80211_change_bss(struct wiphy *wiphy,
1114 struct net_device *dev,
1115 struct bss_parameters *params)
1116 {
1117 struct ieee80211_sub_if_data *sdata;
1118 u32 changed = 0;
1119
1120 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1121
1122 if (params->use_cts_prot >= 0) {
1123 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1124 changed |= BSS_CHANGED_ERP_CTS_PROT;
1125 }
1126 if (params->use_short_preamble >= 0) {
1127 sdata->vif.bss_conf.use_short_preamble =
1128 params->use_short_preamble;
1129 changed |= BSS_CHANGED_ERP_PREAMBLE;
1130 }
1131
1132 if (!sdata->vif.bss_conf.use_short_slot &&
1133 sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1134 sdata->vif.bss_conf.use_short_slot = true;
1135 changed |= BSS_CHANGED_ERP_SLOT;
1136 }
1137
1138 if (params->use_short_slot_time >= 0) {
1139 sdata->vif.bss_conf.use_short_slot =
1140 params->use_short_slot_time;
1141 changed |= BSS_CHANGED_ERP_SLOT;
1142 }
1143
1144 if (params->basic_rates) {
1145 int i, j;
1146 u32 rates = 0;
1147 struct ieee80211_local *local = wiphy_priv(wiphy);
1148 struct ieee80211_supported_band *sband =
1149 wiphy->bands[local->oper_channel->band];
1150
1151 for (i = 0; i < params->basic_rates_len; i++) {
1152 int rate = (params->basic_rates[i] & 0x7f) * 5;
1153 for (j = 0; j < sband->n_bitrates; j++) {
1154 if (sband->bitrates[j].bitrate == rate)
1155 rates |= BIT(j);
1156 }
1157 }
1158 sdata->vif.bss_conf.basic_rates = rates;
1159 changed |= BSS_CHANGED_BASIC_RATES;
1160 }
1161
1162 if (params->ap_isolate >= 0) {
1163 if (params->ap_isolate)
1164 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1165 else
1166 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1167 }
1168
1169 if (params->ht_opmode >= 0) {
1170 sdata->vif.bss_conf.ht_operation_mode =
1171 (u16) params->ht_opmode;
1172 changed |= BSS_CHANGED_HT;
1173 }
1174
1175 ieee80211_bss_info_change_notify(sdata, changed);
1176
1177 return 0;
1178 }
1179
1180 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1181 struct ieee80211_txq_params *params)
1182 {
1183 struct ieee80211_local *local = wiphy_priv(wiphy);
1184 struct ieee80211_tx_queue_params p;
1185
1186 if (!local->ops->conf_tx)
1187 return -EOPNOTSUPP;
1188
1189 memset(&p, 0, sizeof(p));
1190 p.aifs = params->aifs;
1191 p.cw_max = params->cwmax;
1192 p.cw_min = params->cwmin;
1193 p.txop = params->txop;
1194
1195 /*
1196 * Setting tx queue params disables u-apsd because it's only
1197 * called in master mode.
1198 */
1199 p.uapsd = false;
1200
1201 if (drv_conf_tx(local, params->queue, &p)) {
1202 wiphy_debug(local->hw.wiphy,
1203 "failed to set TX queue parameters for queue %d\n",
1204 params->queue);
1205 return -EINVAL;
1206 }
1207
1208 return 0;
1209 }
1210
1211 static int ieee80211_set_channel(struct wiphy *wiphy,
1212 struct net_device *netdev,
1213 struct ieee80211_channel *chan,
1214 enum nl80211_channel_type channel_type)
1215 {
1216 struct ieee80211_local *local = wiphy_priv(wiphy);
1217 struct ieee80211_sub_if_data *sdata = NULL;
1218
1219 if (netdev)
1220 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1221
1222 switch (ieee80211_get_channel_mode(local, NULL)) {
1223 case CHAN_MODE_HOPPING:
1224 return -EBUSY;
1225 case CHAN_MODE_FIXED:
1226 if (local->oper_channel != chan)
1227 return -EBUSY;
1228 if (!sdata && local->_oper_channel_type == channel_type)
1229 return 0;
1230 break;
1231 case CHAN_MODE_UNDEFINED:
1232 break;
1233 }
1234
1235 local->oper_channel = chan;
1236
1237 if (!ieee80211_set_channel_type(local, sdata, channel_type))
1238 return -EBUSY;
1239
1240 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1241 if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
1242 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1243
1244 return 0;
1245 }
1246
1247 #ifdef CONFIG_PM
1248 static int ieee80211_suspend(struct wiphy *wiphy)
1249 {
1250 return __ieee80211_suspend(wiphy_priv(wiphy));
1251 }
1252
1253 static int ieee80211_resume(struct wiphy *wiphy)
1254 {
1255 return __ieee80211_resume(wiphy_priv(wiphy));
1256 }
1257 #else
1258 #define ieee80211_suspend NULL
1259 #define ieee80211_resume NULL
1260 #endif
1261
1262 static int ieee80211_scan(struct wiphy *wiphy,
1263 struct net_device *dev,
1264 struct cfg80211_scan_request *req)
1265 {
1266 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1267
1268 switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1269 case NL80211_IFTYPE_STATION:
1270 case NL80211_IFTYPE_ADHOC:
1271 case NL80211_IFTYPE_MESH_POINT:
1272 case NL80211_IFTYPE_P2P_CLIENT:
1273 break;
1274 case NL80211_IFTYPE_P2P_GO:
1275 if (sdata->local->ops->hw_scan)
1276 break;
1277 /* FIXME: implement NoA while scanning in software */
1278 return -EOPNOTSUPP;
1279 case NL80211_IFTYPE_AP:
1280 if (sdata->u.ap.beacon)
1281 return -EOPNOTSUPP;
1282 break;
1283 default:
1284 return -EOPNOTSUPP;
1285 }
1286
1287 return ieee80211_request_scan(sdata, req);
1288 }
1289
1290 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1291 struct cfg80211_auth_request *req)
1292 {
1293 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1294 }
1295
1296 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1297 struct cfg80211_assoc_request *req)
1298 {
1299 struct ieee80211_local *local = wiphy_priv(wiphy);
1300 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1301
1302 switch (ieee80211_get_channel_mode(local, sdata)) {
1303 case CHAN_MODE_HOPPING:
1304 return -EBUSY;
1305 case CHAN_MODE_FIXED:
1306 if (local->oper_channel == req->bss->channel)
1307 break;
1308 return -EBUSY;
1309 case CHAN_MODE_UNDEFINED:
1310 break;
1311 }
1312
1313 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1314 }
1315
1316 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1317 struct cfg80211_deauth_request *req,
1318 void *cookie)
1319 {
1320 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1321 req, cookie);
1322 }
1323
1324 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1325 struct cfg80211_disassoc_request *req,
1326 void *cookie)
1327 {
1328 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1329 req, cookie);
1330 }
1331
1332 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1333 struct cfg80211_ibss_params *params)
1334 {
1335 struct ieee80211_local *local = wiphy_priv(wiphy);
1336 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1337
1338 switch (ieee80211_get_channel_mode(local, sdata)) {
1339 case CHAN_MODE_HOPPING:
1340 return -EBUSY;
1341 case CHAN_MODE_FIXED:
1342 if (!params->channel_fixed)
1343 return -EBUSY;
1344 if (local->oper_channel == params->channel)
1345 break;
1346 return -EBUSY;
1347 case CHAN_MODE_UNDEFINED:
1348 break;
1349 }
1350
1351 return ieee80211_ibss_join(sdata, params);
1352 }
1353
1354 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1355 {
1356 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1357
1358 return ieee80211_ibss_leave(sdata);
1359 }
1360
1361 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1362 {
1363 struct ieee80211_local *local = wiphy_priv(wiphy);
1364 int err;
1365
1366 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1367 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1368
1369 if (err)
1370 return err;
1371 }
1372
1373 if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1374 err = drv_set_coverage_class(local, wiphy->coverage_class);
1375
1376 if (err)
1377 return err;
1378 }
1379
1380 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1381 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1382
1383 if (err)
1384 return err;
1385 }
1386
1387 if (changed & WIPHY_PARAM_RETRY_SHORT)
1388 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1389 if (changed & WIPHY_PARAM_RETRY_LONG)
1390 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1391 if (changed &
1392 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1393 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1394
1395 return 0;
1396 }
1397
1398 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1399 enum nl80211_tx_power_setting type, int mbm)
1400 {
1401 struct ieee80211_local *local = wiphy_priv(wiphy);
1402 struct ieee80211_channel *chan = local->hw.conf.channel;
1403 u32 changes = 0;
1404
1405 switch (type) {
1406 case NL80211_TX_POWER_AUTOMATIC:
1407 local->user_power_level = -1;
1408 break;
1409 case NL80211_TX_POWER_LIMITED:
1410 if (mbm < 0 || (mbm % 100))
1411 return -EOPNOTSUPP;
1412 local->user_power_level = MBM_TO_DBM(mbm);
1413 break;
1414 case NL80211_TX_POWER_FIXED:
1415 if (mbm < 0 || (mbm % 100))
1416 return -EOPNOTSUPP;
1417 /* TODO: move to cfg80211 when it knows the channel */
1418 if (MBM_TO_DBM(mbm) > chan->max_power)
1419 return -EINVAL;
1420 local->user_power_level = MBM_TO_DBM(mbm);
1421 break;
1422 }
1423
1424 ieee80211_hw_config(local, changes);
1425
1426 return 0;
1427 }
1428
1429 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1430 {
1431 struct ieee80211_local *local = wiphy_priv(wiphy);
1432
1433 *dbm = local->hw.conf.power_level;
1434
1435 return 0;
1436 }
1437
1438 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1439 const u8 *addr)
1440 {
1441 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1442
1443 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1444
1445 return 0;
1446 }
1447
1448 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1449 {
1450 struct ieee80211_local *local = wiphy_priv(wiphy);
1451
1452 drv_rfkill_poll(local);
1453 }
1454
1455 #ifdef CONFIG_NL80211_TESTMODE
1456 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1457 {
1458 struct ieee80211_local *local = wiphy_priv(wiphy);
1459
1460 if (!local->ops->testmode_cmd)
1461 return -EOPNOTSUPP;
1462
1463 return local->ops->testmode_cmd(&local->hw, data, len);
1464 }
1465 #endif
1466
1467 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1468 enum ieee80211_smps_mode smps_mode)
1469 {
1470 const u8 *ap;
1471 enum ieee80211_smps_mode old_req;
1472 int err;
1473
1474 old_req = sdata->u.mgd.req_smps;
1475 sdata->u.mgd.req_smps = smps_mode;
1476
1477 if (old_req == smps_mode &&
1478 smps_mode != IEEE80211_SMPS_AUTOMATIC)
1479 return 0;
1480
1481 /*
1482 * If not associated, or current association is not an HT
1483 * association, there's no need to send an action frame.
1484 */
1485 if (!sdata->u.mgd.associated ||
1486 sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1487 mutex_lock(&sdata->local->iflist_mtx);
1488 ieee80211_recalc_smps(sdata->local);
1489 mutex_unlock(&sdata->local->iflist_mtx);
1490 return 0;
1491 }
1492
1493 ap = sdata->u.mgd.associated->bssid;
1494
1495 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1496 if (sdata->u.mgd.powersave)
1497 smps_mode = IEEE80211_SMPS_DYNAMIC;
1498 else
1499 smps_mode = IEEE80211_SMPS_OFF;
1500 }
1501
1502 /* send SM PS frame to AP */
1503 err = ieee80211_send_smps_action(sdata, smps_mode,
1504 ap, ap);
1505 if (err)
1506 sdata->u.mgd.req_smps = old_req;
1507
1508 return err;
1509 }
1510
1511 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1512 bool enabled, int timeout)
1513 {
1514 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1515 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1516
1517 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1518 return -EOPNOTSUPP;
1519
1520 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1521 return -EOPNOTSUPP;
1522
1523 if (enabled == sdata->u.mgd.powersave &&
1524 timeout == local->dynamic_ps_forced_timeout)
1525 return 0;
1526
1527 sdata->u.mgd.powersave = enabled;
1528 local->dynamic_ps_forced_timeout = timeout;
1529
1530 /* no change, but if automatic follow powersave */
1531 mutex_lock(&sdata->u.mgd.mtx);
1532 __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1533 mutex_unlock(&sdata->u.mgd.mtx);
1534
1535 if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1536 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1537
1538 ieee80211_recalc_ps(local, -1);
1539
1540 return 0;
1541 }
1542
1543 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1544 struct net_device *dev,
1545 s32 rssi_thold, u32 rssi_hyst)
1546 {
1547 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1548 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1549 struct ieee80211_vif *vif = &sdata->vif;
1550 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1551
1552 if (rssi_thold == bss_conf->cqm_rssi_thold &&
1553 rssi_hyst == bss_conf->cqm_rssi_hyst)
1554 return 0;
1555
1556 bss_conf->cqm_rssi_thold = rssi_thold;
1557 bss_conf->cqm_rssi_hyst = rssi_hyst;
1558
1559 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1560 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1561 return -EOPNOTSUPP;
1562 return 0;
1563 }
1564
1565 /* tell the driver upon association, unless already associated */
1566 if (sdata->u.mgd.associated)
1567 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1568
1569 return 0;
1570 }
1571
1572 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1573 struct net_device *dev,
1574 const u8 *addr,
1575 const struct cfg80211_bitrate_mask *mask)
1576 {
1577 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1578 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1579 int i;
1580
1581 /*
1582 * This _could_ be supported by providing a hook for
1583 * drivers for this function, but at this point it
1584 * doesn't seem worth bothering.
1585 */
1586 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL)
1587 return -EOPNOTSUPP;
1588
1589
1590 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1591 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1592
1593 return 0;
1594 }
1595
1596 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1597 struct net_device *dev,
1598 struct ieee80211_channel *chan,
1599 enum nl80211_channel_type chantype,
1600 unsigned int duration, u64 *cookie)
1601 {
1602 int ret;
1603 u32 random_cookie;
1604
1605 lockdep_assert_held(&local->mtx);
1606
1607 if (local->hw_roc_cookie)
1608 return -EBUSY;
1609 /* must be nonzero */
1610 random_cookie = random32() | 1;
1611
1612 *cookie = random_cookie;
1613 local->hw_roc_dev = dev;
1614 local->hw_roc_cookie = random_cookie;
1615 local->hw_roc_channel = chan;
1616 local->hw_roc_channel_type = chantype;
1617 local->hw_roc_duration = duration;
1618 ret = drv_remain_on_channel(local, chan, chantype, duration);
1619 if (ret) {
1620 local->hw_roc_channel = NULL;
1621 local->hw_roc_cookie = 0;
1622 }
1623
1624 return ret;
1625 }
1626
1627 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1628 struct net_device *dev,
1629 struct ieee80211_channel *chan,
1630 enum nl80211_channel_type channel_type,
1631 unsigned int duration,
1632 u64 *cookie)
1633 {
1634 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1635 struct ieee80211_local *local = sdata->local;
1636
1637 if (local->ops->remain_on_channel) {
1638 int ret;
1639
1640 mutex_lock(&local->mtx);
1641 ret = ieee80211_remain_on_channel_hw(local, dev,
1642 chan, channel_type,
1643 duration, cookie);
1644 mutex_unlock(&local->mtx);
1645
1646 return ret;
1647 }
1648
1649 return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1650 duration, cookie);
1651 }
1652
1653 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1654 u64 cookie)
1655 {
1656 int ret;
1657
1658 lockdep_assert_held(&local->mtx);
1659
1660 if (local->hw_roc_cookie != cookie)
1661 return -ENOENT;
1662
1663 ret = drv_cancel_remain_on_channel(local);
1664 if (ret)
1665 return ret;
1666
1667 local->hw_roc_cookie = 0;
1668 local->hw_roc_channel = NULL;
1669
1670 ieee80211_recalc_idle(local);
1671
1672 return 0;
1673 }
1674
1675 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1676 struct net_device *dev,
1677 u64 cookie)
1678 {
1679 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1680 struct ieee80211_local *local = sdata->local;
1681
1682 if (local->ops->cancel_remain_on_channel) {
1683 int ret;
1684
1685 mutex_lock(&local->mtx);
1686 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1687 mutex_unlock(&local->mtx);
1688
1689 return ret;
1690 }
1691
1692 return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1693 }
1694
1695 static enum work_done_result
1696 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1697 {
1698 /*
1699 * Use the data embedded in the work struct for reporting
1700 * here so if the driver mangled the SKB before dropping
1701 * it (which is the only way we really should get here)
1702 * then we don't report mangled data.
1703 *
1704 * If there was no wait time, then by the time we get here
1705 * the driver will likely not have reported the status yet,
1706 * so in that case userspace will have to deal with it.
1707 */
1708
1709 if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1710 cfg80211_mgmt_tx_status(wk->sdata->dev,
1711 (unsigned long) wk->offchan_tx.frame,
1712 wk->ie, wk->ie_len, false, GFP_KERNEL);
1713
1714 return WORK_DONE_DESTROY;
1715 }
1716
1717 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1718 struct ieee80211_channel *chan, bool offchan,
1719 enum nl80211_channel_type channel_type,
1720 bool channel_type_valid, unsigned int wait,
1721 const u8 *buf, size_t len, u64 *cookie)
1722 {
1723 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1724 struct ieee80211_local *local = sdata->local;
1725 struct sk_buff *skb;
1726 struct sta_info *sta;
1727 struct ieee80211_work *wk;
1728 const struct ieee80211_mgmt *mgmt = (void *)buf;
1729 u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1730 IEEE80211_TX_CTL_REQ_TX_STATUS;
1731 bool is_offchan = false;
1732
1733 /* Check that we are on the requested channel for transmission */
1734 if (chan != local->tmp_channel &&
1735 chan != local->oper_channel)
1736 is_offchan = true;
1737 if (channel_type_valid &&
1738 (channel_type != local->tmp_channel_type &&
1739 channel_type != local->_oper_channel_type))
1740 is_offchan = true;
1741
1742 if (chan == local->hw_roc_channel) {
1743 /* TODO: check channel type? */
1744 is_offchan = false;
1745 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1746 }
1747
1748 if (is_offchan && !offchan)
1749 return -EBUSY;
1750
1751 switch (sdata->vif.type) {
1752 case NL80211_IFTYPE_ADHOC:
1753 case NL80211_IFTYPE_AP:
1754 case NL80211_IFTYPE_AP_VLAN:
1755 case NL80211_IFTYPE_P2P_GO:
1756 case NL80211_IFTYPE_MESH_POINT:
1757 if (!ieee80211_is_action(mgmt->frame_control) ||
1758 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1759 break;
1760 rcu_read_lock();
1761 sta = sta_info_get(sdata, mgmt->da);
1762 rcu_read_unlock();
1763 if (!sta)
1764 return -ENOLINK;
1765 break;
1766 case NL80211_IFTYPE_STATION:
1767 case NL80211_IFTYPE_P2P_CLIENT:
1768 break;
1769 default:
1770 return -EOPNOTSUPP;
1771 }
1772
1773 skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1774 if (!skb)
1775 return -ENOMEM;
1776 skb_reserve(skb, local->hw.extra_tx_headroom);
1777
1778 memcpy(skb_put(skb, len), buf, len);
1779
1780 IEEE80211_SKB_CB(skb)->flags = flags;
1781
1782 skb->dev = sdata->dev;
1783
1784 *cookie = (unsigned long) skb;
1785
1786 /*
1787 * Can transmit right away if the channel was the
1788 * right one and there's no wait involved... If a
1789 * wait is involved, we might otherwise not be on
1790 * the right channel for long enough!
1791 */
1792 if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1793 ieee80211_tx_skb(sdata, skb);
1794 return 0;
1795 }
1796
1797 wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1798 if (!wk) {
1799 kfree_skb(skb);
1800 return -ENOMEM;
1801 }
1802
1803 wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1804 wk->chan = chan;
1805 wk->sdata = sdata;
1806 wk->done = ieee80211_offchan_tx_done;
1807 wk->offchan_tx.frame = skb;
1808 wk->offchan_tx.wait = wait;
1809 wk->ie_len = len;
1810 memcpy(wk->ie, buf, len);
1811
1812 ieee80211_add_work(wk);
1813 return 0;
1814 }
1815
1816 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1817 struct net_device *dev,
1818 u64 cookie)
1819 {
1820 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1821 struct ieee80211_local *local = sdata->local;
1822 struct ieee80211_work *wk;
1823 int ret = -ENOENT;
1824
1825 mutex_lock(&local->mtx);
1826 list_for_each_entry(wk, &local->work_list, list) {
1827 if (wk->sdata != sdata)
1828 continue;
1829
1830 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
1831 continue;
1832
1833 if (cookie != (unsigned long) wk->offchan_tx.frame)
1834 continue;
1835
1836 wk->timeout = jiffies;
1837
1838 ieee80211_queue_work(&local->hw, &local->work_work);
1839 ret = 0;
1840 break;
1841 }
1842 mutex_unlock(&local->mtx);
1843
1844 return ret;
1845 }
1846
1847 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
1848 struct net_device *dev,
1849 u16 frame_type, bool reg)
1850 {
1851 struct ieee80211_local *local = wiphy_priv(wiphy);
1852
1853 if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
1854 return;
1855
1856 if (reg)
1857 local->probe_req_reg++;
1858 else
1859 local->probe_req_reg--;
1860
1861 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
1862 }
1863
1864 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
1865 {
1866 struct ieee80211_local *local = wiphy_priv(wiphy);
1867
1868 if (local->started)
1869 return -EOPNOTSUPP;
1870
1871 return drv_set_antenna(local, tx_ant, rx_ant);
1872 }
1873
1874 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
1875 {
1876 struct ieee80211_local *local = wiphy_priv(wiphy);
1877
1878 return drv_get_antenna(local, tx_ant, rx_ant);
1879 }
1880
1881 struct cfg80211_ops mac80211_config_ops = {
1882 .add_virtual_intf = ieee80211_add_iface,
1883 .del_virtual_intf = ieee80211_del_iface,
1884 .change_virtual_intf = ieee80211_change_iface,
1885 .add_key = ieee80211_add_key,
1886 .del_key = ieee80211_del_key,
1887 .get_key = ieee80211_get_key,
1888 .set_default_key = ieee80211_config_default_key,
1889 .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
1890 .add_beacon = ieee80211_add_beacon,
1891 .set_beacon = ieee80211_set_beacon,
1892 .del_beacon = ieee80211_del_beacon,
1893 .add_station = ieee80211_add_station,
1894 .del_station = ieee80211_del_station,
1895 .change_station = ieee80211_change_station,
1896 .get_station = ieee80211_get_station,
1897 .dump_station = ieee80211_dump_station,
1898 .dump_survey = ieee80211_dump_survey,
1899 #ifdef CONFIG_MAC80211_MESH
1900 .add_mpath = ieee80211_add_mpath,
1901 .del_mpath = ieee80211_del_mpath,
1902 .change_mpath = ieee80211_change_mpath,
1903 .get_mpath = ieee80211_get_mpath,
1904 .dump_mpath = ieee80211_dump_mpath,
1905 .update_mesh_config = ieee80211_update_mesh_config,
1906 .get_mesh_config = ieee80211_get_mesh_config,
1907 .join_mesh = ieee80211_join_mesh,
1908 .leave_mesh = ieee80211_leave_mesh,
1909 #endif
1910 .change_bss = ieee80211_change_bss,
1911 .set_txq_params = ieee80211_set_txq_params,
1912 .set_channel = ieee80211_set_channel,
1913 .suspend = ieee80211_suspend,
1914 .resume = ieee80211_resume,
1915 .scan = ieee80211_scan,
1916 .auth = ieee80211_auth,
1917 .assoc = ieee80211_assoc,
1918 .deauth = ieee80211_deauth,
1919 .disassoc = ieee80211_disassoc,
1920 .join_ibss = ieee80211_join_ibss,
1921 .leave_ibss = ieee80211_leave_ibss,
1922 .set_wiphy_params = ieee80211_set_wiphy_params,
1923 .set_tx_power = ieee80211_set_tx_power,
1924 .get_tx_power = ieee80211_get_tx_power,
1925 .set_wds_peer = ieee80211_set_wds_peer,
1926 .rfkill_poll = ieee80211_rfkill_poll,
1927 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
1928 .set_power_mgmt = ieee80211_set_power_mgmt,
1929 .set_bitrate_mask = ieee80211_set_bitrate_mask,
1930 .remain_on_channel = ieee80211_remain_on_channel,
1931 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
1932 .mgmt_tx = ieee80211_mgmt_tx,
1933 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
1934 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
1935 .mgmt_frame_register = ieee80211_mgmt_frame_register,
1936 .set_antenna = ieee80211_set_antenna,
1937 .get_antenna = ieee80211_get_antenna,
1938 };
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