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spi-topcliff-pch: add recovery processing in case wait-event timeout
[zen-stable.git] / drivers / net / wireless / mwifiex / cfg80211.c
blob2210a0f9af2da52c0f761841e586f18d7ee75480
1 /*
2 * Marvell Wireless LAN device driver: CFG80211
3 *
4 * Copyright (C) 2011, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include "cfg80211.h"
21 #include "main.h"
22
23 /*
24 * This function maps the nl802.11 channel type into driver channel type.
25 *
26 * The mapping is as follows -
27 * NL80211_CHAN_NO_HT -> IEEE80211_HT_PARAM_CHA_SEC_NONE
28 * NL80211_CHAN_HT20 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
29 * NL80211_CHAN_HT40PLUS -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
30 * NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
31 * Others -> IEEE80211_HT_PARAM_CHA_SEC_NONE
32 */
33 static u8
34 mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type
35 channel_type)
36 {
37 switch (channel_type) {
38 case NL80211_CHAN_NO_HT:
39 case NL80211_CHAN_HT20:
40 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
41 case NL80211_CHAN_HT40PLUS:
42 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
43 case NL80211_CHAN_HT40MINUS:
44 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
45 default:
46 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
47 }
48 }
49
50 /*
51 * This function checks whether WEP is set.
52 */
53 static int
54 mwifiex_is_alg_wep(u32 cipher)
55 {
56 switch (cipher) {
57 case WLAN_CIPHER_SUITE_WEP40:
58 case WLAN_CIPHER_SUITE_WEP104:
59 return 1;
60 default:
61 break;
62 }
63
64 return 0;
65 }
66
67 /*
68 * This function retrieves the private structure from kernel wiphy structure.
69 */
70 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
71 {
72 return (void *) (*(unsigned long *) wiphy_priv(wiphy));
73 }
74
75 /*
76 * CFG802.11 operation handler to delete a network key.
77 */
78 static int
79 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
80 u8 key_index, bool pairwise, const u8 *mac_addr)
81 {
82 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
83
84 if (mwifiex_set_encode(priv, NULL, 0, key_index, 1)) {
85 wiphy_err(wiphy, "deleting the crypto keys\n");
86 return -EFAULT;
87 }
88
89 wiphy_dbg(wiphy, "info: crypto keys deleted\n");
90 return 0;
91 }
92
93 /*
94 * CFG802.11 operation handler to set Tx power.
95 */
96 static int
97 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
98 enum nl80211_tx_power_setting type,
99 int mbm)
100 {
101 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
102 struct mwifiex_power_cfg power_cfg;
103 int dbm = MBM_TO_DBM(mbm);
104
105 if (type == NL80211_TX_POWER_FIXED) {
106 power_cfg.is_power_auto = 0;
107 power_cfg.power_level = dbm;
108 } else {
109 power_cfg.is_power_auto = 1;
110 }
111
112 return mwifiex_set_tx_power(priv, &power_cfg);
113 }
114
115 /*
116 * CFG802.11 operation handler to set Power Save option.
117 *
118 * The timeout value, if provided, is currently ignored.
119 */
120 static int
121 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
122 struct net_device *dev,
123 bool enabled, int timeout)
124 {
125 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
126 u32 ps_mode;
127
128 if (timeout)
129 wiphy_dbg(wiphy,
130 "info: ignoring the timeout value"
131 " for IEEE power save\n");
132
133 ps_mode = enabled;
134
135 return mwifiex_drv_set_power(priv, &ps_mode);
136 }
137
138 /*
139 * CFG802.11 operation handler to set the default network key.
140 */
141 static int
142 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
143 u8 key_index, bool unicast,
144 bool multicast)
145 {
146 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
147
148 /* Return if WEP key not configured */
149 if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
150 return 0;
151
152 if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
153 wiphy_err(wiphy, "set default Tx key index\n");
154 return -EFAULT;
155 }
156
157 return 0;
158 }
159
160 /*
161 * CFG802.11 operation handler to add a network key.
162 */
163 static int
164 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
165 u8 key_index, bool pairwise, const u8 *mac_addr,
166 struct key_params *params)
167 {
168 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
169
170 if (mwifiex_set_encode(priv, params->key, params->key_len,
171 key_index, 0)) {
172 wiphy_err(wiphy, "crypto keys added\n");
173 return -EFAULT;
174 }
175
176 return 0;
177 }
178
179 /*
180 * This function sends domain information to the firmware.
181 *
182 * The following information are passed to the firmware -
183 * - Country codes
184 * - Sub bands (first channel, number of channels, maximum Tx power)
185 */
186 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
187 {
188 u8 no_of_triplet = 0;
189 struct ieee80211_country_ie_triplet *t;
190 u8 no_of_parsed_chan = 0;
191 u8 first_chan = 0, next_chan = 0, max_pwr = 0;
192 u8 i, flag = 0;
193 enum ieee80211_band band;
194 struct ieee80211_supported_band *sband;
195 struct ieee80211_channel *ch;
196 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
197 struct mwifiex_adapter *adapter = priv->adapter;
198 struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
199
200 /* Set country code */
201 domain_info->country_code[0] = priv->country_code[0];
202 domain_info->country_code[1] = priv->country_code[1];
203 domain_info->country_code[2] = ' ';
204
205 band = mwifiex_band_to_radio_type(adapter->config_bands);
206 if (!wiphy->bands[band]) {
207 wiphy_err(wiphy, "11D: setting domain info in FW\n");
208 return -1;
209 }
210
211 sband = wiphy->bands[band];
212
213 for (i = 0; i < sband->n_channels ; i++) {
214 ch = &sband->channels[i];
215 if (ch->flags & IEEE80211_CHAN_DISABLED)
216 continue;
217
218 if (!flag) {
219 flag = 1;
220 first_chan = (u32) ch->hw_value;
221 next_chan = first_chan;
222 max_pwr = ch->max_power;
223 no_of_parsed_chan = 1;
224 continue;
225 }
226
227 if (ch->hw_value == next_chan + 1 &&
228 ch->max_power == max_pwr) {
229 next_chan++;
230 no_of_parsed_chan++;
231 } else {
232 t = &domain_info->triplet[no_of_triplet];
233 t->chans.first_channel = first_chan;
234 t->chans.num_channels = no_of_parsed_chan;
235 t->chans.max_power = max_pwr;
236 no_of_triplet++;
237 first_chan = (u32) ch->hw_value;
238 next_chan = first_chan;
239 max_pwr = ch->max_power;
240 no_of_parsed_chan = 1;
241 }
242 }
243
244 if (flag) {
245 t = &domain_info->triplet[no_of_triplet];
246 t->chans.first_channel = first_chan;
247 t->chans.num_channels = no_of_parsed_chan;
248 t->chans.max_power = max_pwr;
249 no_of_triplet++;
250 }
251
252 domain_info->no_of_triplet = no_of_triplet;
253
254 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
255 HostCmd_ACT_GEN_SET, 0, NULL)) {
256 wiphy_err(wiphy, "11D: setting domain info in FW\n");
257 return -1;
258 }
259
260 return 0;
261 }
262
263 /*
264 * CFG802.11 regulatory domain callback function.
265 *
266 * This function is called when the regulatory domain is changed due to the
267 * following reasons -
268 * - Set by driver
269 * - Set by system core
270 * - Set by user
271 * - Set bt Country IE
272 */
273 static int mwifiex_reg_notifier(struct wiphy *wiphy,
274 struct regulatory_request *request)
275 {
276 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
277
278 wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
279 " %c%c\n", request->alpha2[0], request->alpha2[1]);
280
281 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
282
283 switch (request->initiator) {
284 case NL80211_REGDOM_SET_BY_DRIVER:
285 case NL80211_REGDOM_SET_BY_CORE:
286 case NL80211_REGDOM_SET_BY_USER:
287 break;
288 /* Todo: apply driver specific changes in channel flags based
289 on the request initiator if necessary. */
290 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
291 break;
292 }
293 mwifiex_send_domain_info_cmd_fw(wiphy);
294
295 return 0;
296 }
297
298 /*
299 * This function sets the RF channel.
300 *
301 * This function creates multiple IOCTL requests, populates them accordingly
302 * and issues them to set the band/channel and frequency.
303 */
304 static int
305 mwifiex_set_rf_channel(struct mwifiex_private *priv,
306 struct ieee80211_channel *chan,
307 enum nl80211_channel_type channel_type)
308 {
309 struct mwifiex_chan_freq_power cfp;
310 u32 config_bands = 0;
311 struct wiphy *wiphy = priv->wdev->wiphy;
312 struct mwifiex_adapter *adapter = priv->adapter;
313
314 if (chan) {
315 /* Set appropriate bands */
316 if (chan->band == IEEE80211_BAND_2GHZ) {
317 if (channel_type == NL80211_CHAN_NO_HT)
318 if (priv->adapter->config_bands == BAND_B ||
319 priv->adapter->config_bands == BAND_G)
320 config_bands =
321 priv->adapter->config_bands;
322 else
323 config_bands = BAND_B | BAND_G;
324 else
325 config_bands = BAND_B | BAND_G | BAND_GN;
326 } else {
327 if (channel_type == NL80211_CHAN_NO_HT)
328 config_bands = BAND_A;
329 else
330 config_bands = BAND_AN | BAND_A;
331 }
332
333 if (!((config_bands | adapter->fw_bands) &
334 ~adapter->fw_bands)) {
335 adapter->config_bands = config_bands;
336 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
337 adapter->adhoc_start_band = config_bands;
338 if ((config_bands & BAND_GN) ||
339 (config_bands & BAND_AN))
340 adapter->adhoc_11n_enabled = true;
341 else
342 adapter->adhoc_11n_enabled = false;
343 }
344 }
345 adapter->sec_chan_offset =
346 mwifiex_cfg80211_channel_type_to_sec_chan_offset
347 (channel_type);
348 adapter->channel_type = channel_type;
349
350 mwifiex_send_domain_info_cmd_fw(wiphy);
351 }
352
353 wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
354 "mode %d\n", config_bands, adapter->sec_chan_offset,
355 priv->bss_mode);
356 if (!chan)
357 return 0;
358
359 memset(&cfp, 0, sizeof(cfp));
360 cfp.freq = chan->center_freq;
361 cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
362
363 if (mwifiex_bss_set_channel(priv, &cfp))
364 return -EFAULT;
365
366 return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
367 }
368
369 /*
370 * CFG802.11 operation handler to set channel.
371 *
372 * This function can only be used when station is not connected.
373 */
374 static int
375 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
376 struct ieee80211_channel *chan,
377 enum nl80211_channel_type channel_type)
378 {
379 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
380
381 if (priv->media_connected) {
382 wiphy_err(wiphy, "This setting is valid only when station "
383 "is not connected\n");
384 return -EINVAL;
385 }
386
387 return mwifiex_set_rf_channel(priv, chan, channel_type);
388 }
389
390 /*
391 * This function sets the fragmentation threshold.
392 *
393 * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
394 * and MWIFIEX_FRAG_MAX_VALUE.
395 */
396 static int
397 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
398 {
399 int ret;
400
401 if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
402 || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
403 return -EINVAL;
404
405 /* Send request to firmware */
406 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
407 HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
408 &frag_thr);
409
410 return ret;
411 }
412
413 /*
414 * This function sets the RTS threshold.
415
416 * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
417 * and MWIFIEX_RTS_MAX_VALUE.
418 */
419 static int
420 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
421 {
422 if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
423 rts_thr = MWIFIEX_RTS_MAX_VALUE;
424
425 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
426 HostCmd_ACT_GEN_SET, RTS_THRESH_I,
427 &rts_thr);
428 }
429
430 /*
431 * CFG802.11 operation handler to set wiphy parameters.
432 *
433 * This function can be used to set the RTS threshold and the
434 * Fragmentation threshold of the driver.
435 */
436 static int
437 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
438 {
439 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
440 int ret = 0;
441
442 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
443 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
444 if (ret)
445 return ret;
446 }
447
448 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
449 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
450
451 return ret;
452 }
453
454 /*
455 * CFG802.11 operation handler to change interface type.
456 */
457 static int
458 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
459 struct net_device *dev,
460 enum nl80211_iftype type, u32 *flags,
461 struct vif_params *params)
462 {
463 int ret;
464 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
465
466 if (priv->bss_mode == type) {
467 wiphy_warn(wiphy, "already set to required type\n");
468 return 0;
469 }
470
471 priv->bss_mode = type;
472
473 switch (type) {
474 case NL80211_IFTYPE_ADHOC:
475 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
476 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
477 break;
478 case NL80211_IFTYPE_STATION:
479 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
480 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
481 break;
482 case NL80211_IFTYPE_UNSPECIFIED:
483 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
484 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
485 return 0;
486 default:
487 wiphy_err(wiphy, "unknown interface type: %d\n", type);
488 return -EINVAL;
489 }
490
491 mwifiex_deauthenticate(priv, NULL);
492
493 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
494
495 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
496 HostCmd_ACT_GEN_SET, 0, NULL);
497
498 return ret;
499 }
500
501 /*
502 * This function dumps the station information on a buffer.
503 *
504 * The following information are shown -
505 * - Total bytes transmitted
506 * - Total bytes received
507 * - Total packets transmitted
508 * - Total packets received
509 * - Signal quality level
510 * - Transmission rate
511 */
512 static int
513 mwifiex_dump_station_info(struct mwifiex_private *priv,
514 struct station_info *sinfo)
515 {
516 struct mwifiex_ds_get_signal signal;
517 struct mwifiex_rate_cfg rate;
518 int ret = 0;
519
520 sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
521 STATION_INFO_RX_PACKETS |
522 STATION_INFO_TX_PACKETS
523 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
524
525 /* Get signal information from the firmware */
526 memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
527 if (mwifiex_get_signal_info(priv, &signal)) {
528 dev_err(priv->adapter->dev, "getting signal information\n");
529 ret = -EFAULT;
530 }
531
532 if (mwifiex_drv_get_data_rate(priv, &rate)) {
533 dev_err(priv->adapter->dev, "getting data rate\n");
534 ret = -EFAULT;
535 }
536
537 /*
538 * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
539 * MCS index values for us are 0 to 7.
540 */
541 if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
542 sinfo->txrate.mcs = priv->tx_rate;
543 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
544 /* 40MHz rate */
545 if (priv->tx_htinfo & BIT(1))
546 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
547 /* SGI enabled */
548 if (priv->tx_htinfo & BIT(2))
549 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
550 }
551
552 sinfo->rx_bytes = priv->stats.rx_bytes;
553 sinfo->tx_bytes = priv->stats.tx_bytes;
554 sinfo->rx_packets = priv->stats.rx_packets;
555 sinfo->tx_packets = priv->stats.tx_packets;
556 sinfo->signal = priv->qual_level;
557 /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
558 sinfo->txrate.legacy = rate.rate * 5;
559
560 return ret;
561 }
562
563 /*
564 * CFG802.11 operation handler to get station information.
565 *
566 * This function only works in connected mode, and dumps the
567 * requested station information, if available.
568 */
569 static int
570 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
571 u8 *mac, struct station_info *sinfo)
572 {
573 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
574
575 if (!priv->media_connected)
576 return -ENOENT;
577 if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
578 return -ENOENT;
579
580 return mwifiex_dump_station_info(priv, sinfo);
581 }
582
583 /* Supported rates to be advertised to the cfg80211 */
584
585 static struct ieee80211_rate mwifiex_rates[] = {
586 {.bitrate = 10, .hw_value = 2, },
587 {.bitrate = 20, .hw_value = 4, },
588 {.bitrate = 55, .hw_value = 11, },
589 {.bitrate = 110, .hw_value = 22, },
590 {.bitrate = 220, .hw_value = 44, },
591 {.bitrate = 60, .hw_value = 12, },
592 {.bitrate = 90, .hw_value = 18, },
593 {.bitrate = 120, .hw_value = 24, },
594 {.bitrate = 180, .hw_value = 36, },
595 {.bitrate = 240, .hw_value = 48, },
596 {.bitrate = 360, .hw_value = 72, },
597 {.bitrate = 480, .hw_value = 96, },
598 {.bitrate = 540, .hw_value = 108, },
599 {.bitrate = 720, .hw_value = 144, },
600 };
601
602 /* Channel definitions to be advertised to cfg80211 */
603
604 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
605 {.center_freq = 2412, .hw_value = 1, },
606 {.center_freq = 2417, .hw_value = 2, },
607 {.center_freq = 2422, .hw_value = 3, },
608 {.center_freq = 2427, .hw_value = 4, },
609 {.center_freq = 2432, .hw_value = 5, },
610 {.center_freq = 2437, .hw_value = 6, },
611 {.center_freq = 2442, .hw_value = 7, },
612 {.center_freq = 2447, .hw_value = 8, },
613 {.center_freq = 2452, .hw_value = 9, },
614 {.center_freq = 2457, .hw_value = 10, },
615 {.center_freq = 2462, .hw_value = 11, },
616 {.center_freq = 2467, .hw_value = 12, },
617 {.center_freq = 2472, .hw_value = 13, },
618 {.center_freq = 2484, .hw_value = 14, },
619 };
620
621 static struct ieee80211_supported_band mwifiex_band_2ghz = {
622 .channels = mwifiex_channels_2ghz,
623 .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
624 .bitrates = mwifiex_rates,
625 .n_bitrates = 14,
626 };
627
628 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
629 {.center_freq = 5040, .hw_value = 8, },
630 {.center_freq = 5060, .hw_value = 12, },
631 {.center_freq = 5080, .hw_value = 16, },
632 {.center_freq = 5170, .hw_value = 34, },
633 {.center_freq = 5190, .hw_value = 38, },
634 {.center_freq = 5210, .hw_value = 42, },
635 {.center_freq = 5230, .hw_value = 46, },
636 {.center_freq = 5180, .hw_value = 36, },
637 {.center_freq = 5200, .hw_value = 40, },
638 {.center_freq = 5220, .hw_value = 44, },
639 {.center_freq = 5240, .hw_value = 48, },
640 {.center_freq = 5260, .hw_value = 52, },
641 {.center_freq = 5280, .hw_value = 56, },
642 {.center_freq = 5300, .hw_value = 60, },
643 {.center_freq = 5320, .hw_value = 64, },
644 {.center_freq = 5500, .hw_value = 100, },
645 {.center_freq = 5520, .hw_value = 104, },
646 {.center_freq = 5540, .hw_value = 108, },
647 {.center_freq = 5560, .hw_value = 112, },
648 {.center_freq = 5580, .hw_value = 116, },
649 {.center_freq = 5600, .hw_value = 120, },
650 {.center_freq = 5620, .hw_value = 124, },
651 {.center_freq = 5640, .hw_value = 128, },
652 {.center_freq = 5660, .hw_value = 132, },
653 {.center_freq = 5680, .hw_value = 136, },
654 {.center_freq = 5700, .hw_value = 140, },
655 {.center_freq = 5745, .hw_value = 149, },
656 {.center_freq = 5765, .hw_value = 153, },
657 {.center_freq = 5785, .hw_value = 157, },
658 {.center_freq = 5805, .hw_value = 161, },
659 {.center_freq = 5825, .hw_value = 165, },
660 };
661
662 static struct ieee80211_supported_band mwifiex_band_5ghz = {
663 .channels = mwifiex_channels_5ghz,
664 .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
665 .bitrates = mwifiex_rates - 4,
666 .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
667 };
668
669
670 /* Supported crypto cipher suits to be advertised to cfg80211 */
671
672 static const u32 mwifiex_cipher_suites[] = {
673 WLAN_CIPHER_SUITE_WEP40,
674 WLAN_CIPHER_SUITE_WEP104,
675 WLAN_CIPHER_SUITE_TKIP,
676 WLAN_CIPHER_SUITE_CCMP,
677 };
678
679 /*
680 * CFG802.11 operation handler for setting bit rates.
681 *
682 * Function selects legacy bang B/G/BG from corresponding bitrates selection.
683 * Currently only 2.4GHz band is supported.
684 */
685 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
686 struct net_device *dev,
687 const u8 *peer,
688 const struct cfg80211_bitrate_mask *mask)
689 {
690 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
691 int index = 0, mode = 0, i;
692 struct mwifiex_adapter *adapter = priv->adapter;
693
694 /* Currently only 2.4GHz is supported */
695 for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
696 /*
697 * Rates below 6 Mbps in the table are CCK rates; 802.11b
698 * and from 6 they are OFDM; 802.11G
699 */
700 if (mwifiex_rates[i].bitrate == 60) {
701 index = 1 << i;
702 break;
703 }
704 }
705
706 if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
707 mode = BAND_B;
708 } else {
709 mode = BAND_G;
710 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
711 mode |= BAND_B;
712 }
713
714 if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
715 adapter->config_bands = mode;
716 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
717 adapter->adhoc_start_band = mode;
718 adapter->adhoc_11n_enabled = false;
719 }
720 }
721 adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
722 adapter->channel_type = NL80211_CHAN_NO_HT;
723
724 wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
725 (mode & BAND_B) ? "b" : "",
726 (mode & BAND_G) ? "g" : "");
727
728 return 0;
729 }
730
731 /*
732 * CFG802.11 operation handler for disconnection request.
733 *
734 * This function does not work when there is already a disconnection
735 * procedure going on.
736 */
737 static int
738 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
739 u16 reason_code)
740 {
741 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
742
743 if (mwifiex_deauthenticate(priv, NULL))
744 return -EFAULT;
745
746 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
747 " reason code %d\n", priv->cfg_bssid, reason_code);
748
749 memset(priv->cfg_bssid, 0, ETH_ALEN);
750
751 return 0;
752 }
753
754 /*
755 * This function informs the CFG802.11 subsystem of a new IBSS.
756 *
757 * The following information are sent to the CFG802.11 subsystem
758 * to register the new IBSS. If we do not register the new IBSS,
759 * a kernel panic will result.
760 * - SSID
761 * - SSID length
762 * - BSSID
763 * - Channel
764 */
765 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
766 {
767 struct ieee80211_channel *chan;
768 struct mwifiex_bss_info bss_info;
769 struct cfg80211_bss *bss;
770 int ie_len;
771 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
772 enum ieee80211_band band;
773
774 if (mwifiex_get_bss_info(priv, &bss_info))
775 return -1;
776
777 ie_buf[0] = WLAN_EID_SSID;
778 ie_buf[1] = bss_info.ssid.ssid_len;
779
780 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
781 &bss_info.ssid.ssid,
782 bss_info.ssid.ssid_len);
783 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
784
785 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
786 chan = __ieee80211_get_channel(priv->wdev->wiphy,
787 ieee80211_channel_to_frequency(bss_info.bss_chan,
788 band));
789
790 bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
791 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
792 0, ie_buf, ie_len, 0, GFP_KERNEL);
793 cfg80211_put_bss(bss);
794 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
795
796 return 0;
797 }
798
799 /*
800 * This function connects with a BSS.
801 *
802 * This function handles both Infra and Ad-Hoc modes. It also performs
803 * validity checking on the provided parameters, disconnects from the
804 * current BSS (if any), sets up the association/scan parameters,
805 * including security settings, and performs specific SSID scan before
806 * trying to connect.
807 *
808 * For Infra mode, the function returns failure if the specified SSID
809 * is not found in scan table. However, for Ad-Hoc mode, it can create
810 * the IBSS if it does not exist. On successful completion in either case,
811 * the function notifies the CFG802.11 subsystem of the new BSS connection.
812 */
813 static int
814 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
815 u8 *bssid, int mode, struct ieee80211_channel *channel,
816 struct cfg80211_connect_params *sme, bool privacy)
817 {
818 struct mwifiex_802_11_ssid req_ssid;
819 int ret, auth_type = 0;
820 struct cfg80211_bss *bss = NULL;
821 u8 is_scanning_required = 0;
822
823 memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
824
825 req_ssid.ssid_len = ssid_len;
826 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
827 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
828 return -EINVAL;
829 }
830
831 memcpy(req_ssid.ssid, ssid, ssid_len);
832 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
833 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
834 return -EINVAL;
835 }
836
837 /* disconnect before try to associate */
838 mwifiex_deauthenticate(priv, NULL);
839
840 if (channel)
841 ret = mwifiex_set_rf_channel(priv, channel,
842 priv->adapter->channel_type);
843
844 /* As this is new association, clear locally stored
845 * keys and security related flags */
846 priv->sec_info.wpa_enabled = false;
847 priv->sec_info.wpa2_enabled = false;
848 priv->wep_key_curr_index = 0;
849 priv->sec_info.encryption_mode = 0;
850 ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
851
852 if (mode == NL80211_IFTYPE_ADHOC) {
853 /* "privacy" is set only for ad-hoc mode */
854 if (privacy) {
855 /*
856 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
857 * the firmware can find a matching network from the
858 * scan. The cfg80211 does not give us the encryption
859 * mode at this stage so just setting it to WEP here.
860 */
861 priv->sec_info.encryption_mode =
862 WLAN_CIPHER_SUITE_WEP104;
863 priv->sec_info.authentication_mode =
864 NL80211_AUTHTYPE_OPEN_SYSTEM;
865 }
866
867 goto done;
868 }
869
870 /* Now handle infra mode. "sme" is valid for infra mode only */
871 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
872 || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
873 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
874 else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
875 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
876
877 if (sme->crypto.n_ciphers_pairwise) {
878 priv->sec_info.encryption_mode =
879 sme->crypto.ciphers_pairwise[0];
880 priv->sec_info.authentication_mode = auth_type;
881 }
882
883 if (sme->crypto.cipher_group) {
884 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
885 priv->sec_info.authentication_mode = auth_type;
886 }
887 if (sme->ie)
888 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
889
890 if (sme->key) {
891 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
892 dev_dbg(priv->adapter->dev,
893 "info: setting wep encryption"
894 " with key len %d\n", sme->key_len);
895 priv->wep_key_curr_index = sme->key_idx;
896 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
897 sme->key_idx, 0);
898 }
899 }
900 done:
901 /* Do specific SSID scanning */
902 if (mwifiex_request_scan(priv, &req_ssid)) {
903 dev_err(priv->adapter->dev, "scan error\n");
904 return -EFAULT;
905 }
906
907 /*
908 * Scan entries are valid for some time (15 sec). So we can save one
909 * active scan time if we just try cfg80211_get_bss first. If it fails
910 * then request scan and cfg80211_get_bss() again for final output.
911 */
912 while (1) {
913 if (is_scanning_required) {
914 /* Do specific SSID scanning */
915 if (mwifiex_request_scan(priv, &req_ssid)) {
916 dev_err(priv->adapter->dev, "scan error\n");
917 return -EFAULT;
918 }
919 }
920
921 /* Find the BSS we want using available scan results */
922 if (mode == NL80211_IFTYPE_ADHOC)
923 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
924 bssid, ssid, ssid_len,
925 WLAN_CAPABILITY_IBSS,
926 WLAN_CAPABILITY_IBSS);
927 else
928 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
929 bssid, ssid, ssid_len,
930 WLAN_CAPABILITY_ESS,
931 WLAN_CAPABILITY_ESS);
932
933 if (!bss) {
934 if (is_scanning_required) {
935 dev_warn(priv->adapter->dev, "assoc: requested "
936 "bss not found in scan results\n");
937 break;
938 }
939 is_scanning_required = 1;
940 } else {
941 dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
942 (char *) req_ssid.ssid, bss->bssid);
943 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
944 break;
945 }
946 }
947
948 if (mwifiex_bss_start(priv, bss, &req_ssid))
949 return -EFAULT;
950
951 if (mode == NL80211_IFTYPE_ADHOC) {
952 /* Inform the BSS information to kernel, otherwise
953 * kernel will give a panic after successful assoc */
954 if (mwifiex_cfg80211_inform_ibss_bss(priv))
955 return -EFAULT;
956 }
957
958 return ret;
959 }
960
961 /*
962 * CFG802.11 operation handler for association request.
963 *
964 * This function does not work when the current mode is set to Ad-Hoc, or
965 * when there is already an association procedure going on. The given BSS
966 * information is used to associate.
967 */
968 static int
969 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
970 struct cfg80211_connect_params *sme)
971 {
972 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
973 int ret = 0;
974
975 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
976 wiphy_err(wiphy, "received infra assoc request "
977 "when station is in ibss mode\n");
978 goto done;
979 }
980
981 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
982 (char *) sme->ssid, sme->bssid);
983
984 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
985 priv->bss_mode, sme->channel, sme, 0);
986 done:
987 if (!ret) {
988 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
989 NULL, 0, WLAN_STATUS_SUCCESS,
990 GFP_KERNEL);
991 dev_dbg(priv->adapter->dev,
992 "info: associated to bssid %pM successfully\n",
993 priv->cfg_bssid);
994 } else {
995 dev_dbg(priv->adapter->dev,
996 "info: association to bssid %pM failed\n",
997 priv->cfg_bssid);
998 memset(priv->cfg_bssid, 0, ETH_ALEN);
999 }
1000
1001 return ret;
1002 }
1003
1004 /*
1005 * CFG802.11 operation handler to join an IBSS.
1006 *
1007 * This function does not work in any mode other than Ad-Hoc, or if
1008 * a join operation is already in progress.
1009 */
1010 static int
1011 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1012 struct cfg80211_ibss_params *params)
1013 {
1014 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1015 int ret = 0;
1016
1017 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1018 wiphy_err(wiphy, "request to join ibss received "
1019 "when station is not in ibss mode\n");
1020 goto done;
1021 }
1022
1023 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1024 (char *) params->ssid, params->bssid);
1025
1026 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1027 params->bssid, priv->bss_mode,
1028 params->channel, NULL, params->privacy);
1029 done:
1030 if (!ret) {
1031 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1032 dev_dbg(priv->adapter->dev,
1033 "info: joined/created adhoc network with bssid"
1034 " %pM successfully\n", priv->cfg_bssid);
1035 } else {
1036 dev_dbg(priv->adapter->dev,
1037 "info: failed creating/joining adhoc network\n");
1038 }
1039
1040 return ret;
1041 }
1042
1043 /*
1044 * CFG802.11 operation handler to leave an IBSS.
1045 *
1046 * This function does not work if a leave operation is
1047 * already in progress.
1048 */
1049 static int
1050 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1051 {
1052 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1053
1054 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1055 priv->cfg_bssid);
1056 if (mwifiex_deauthenticate(priv, NULL))
1057 return -EFAULT;
1058
1059 memset(priv->cfg_bssid, 0, ETH_ALEN);
1060
1061 return 0;
1062 }
1063
1064 /*
1065 * CFG802.11 operation handler for scan request.
1066 *
1067 * This function issues a scan request to the firmware based upon
1068 * the user specified scan configuration. On successfull completion,
1069 * it also informs the results.
1070 */
1071 static int
1072 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1073 struct cfg80211_scan_request *request)
1074 {
1075 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1076 int i;
1077 struct ieee80211_channel *chan;
1078
1079 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1080
1081 priv->scan_request = request;
1082
1083 priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1084 GFP_KERNEL);
1085 if (!priv->user_scan_cfg) {
1086 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1087 return -ENOMEM;
1088 }
1089 for (i = 0; i < request->n_ssids; i++) {
1090 memcpy(priv->user_scan_cfg->ssid_list[i].ssid,
1091 request->ssids[i].ssid, request->ssids[i].ssid_len);
1092 priv->user_scan_cfg->ssid_list[i].max_len =
1093 request->ssids[i].ssid_len;
1094 }
1095 for (i = 0; i < request->n_channels; i++) {
1096 chan = request->channels[i];
1097 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1098 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1099
1100 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1101 priv->user_scan_cfg->chan_list[i].scan_type =
1102 MWIFIEX_SCAN_TYPE_PASSIVE;
1103 else
1104 priv->user_scan_cfg->chan_list[i].scan_type =
1105 MWIFIEX_SCAN_TYPE_ACTIVE;
1106
1107 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1108 }
1109 if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1110 return -EFAULT;
1111
1112 return 0;
1113 }
1114
1115 /*
1116 * This function sets up the CFG802.11 specific HT capability fields
1117 * with default values.
1118 *
1119 * The following default values are set -
1120 * - HT Supported = True
1121 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1122 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1123 * - HT Capabilities supported by firmware
1124 * - MCS information, Rx mask = 0xff
1125 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1126 */
1127 static void
1128 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1129 struct mwifiex_private *priv)
1130 {
1131 int rx_mcs_supp;
1132 struct ieee80211_mcs_info mcs_set;
1133 u8 *mcs = (u8 *)&mcs_set;
1134 struct mwifiex_adapter *adapter = priv->adapter;
1135
1136 ht_info->ht_supported = true;
1137 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1138 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1139
1140 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1141
1142 /* Fill HT capability information */
1143 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1144 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1145 else
1146 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1147
1148 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1149 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1150 else
1151 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1152
1153 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1154 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1155 else
1156 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1157
1158 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1159 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1160 else
1161 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1162
1163 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1164 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1165 else
1166 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1167
1168 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1169 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1170
1171 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1172 /* Set MCS for 1x1 */
1173 memset(mcs, 0xff, rx_mcs_supp);
1174 /* Clear all the other values */
1175 memset(&mcs[rx_mcs_supp], 0,
1176 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1177 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1178 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1179 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1180 SETHT_MCS32(mcs_set.rx_mask);
1181
1182 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1183
1184 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1185 }
1186
1187 /*
1188 * create a new virtual interface with the given name
1189 */
1190 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1191 char *name,
1192 enum nl80211_iftype type,
1193 u32 *flags,
1194 struct vif_params *params)
1195 {
1196 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1197 struct mwifiex_adapter *adapter;
1198 struct net_device *dev;
1199 void *mdev_priv;
1200
1201 if (!priv)
1202 return NULL;
1203
1204 adapter = priv->adapter;
1205 if (!adapter)
1206 return NULL;
1207
1208 switch (type) {
1209 case NL80211_IFTYPE_UNSPECIFIED:
1210 case NL80211_IFTYPE_STATION:
1211 case NL80211_IFTYPE_ADHOC:
1212 if (priv->bss_mode) {
1213 wiphy_err(wiphy, "cannot create multiple"
1214 " station/adhoc interfaces\n");
1215 return NULL;
1216 }
1217
1218 if (type == NL80211_IFTYPE_UNSPECIFIED)
1219 priv->bss_mode = NL80211_IFTYPE_STATION;
1220 else
1221 priv->bss_mode = type;
1222
1223 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1224 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1225 priv->bss_priority = 0;
1226 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1227 priv->bss_index = 0;
1228 priv->bss_num = 0;
1229
1230 break;
1231 default:
1232 wiphy_err(wiphy, "type not supported\n");
1233 return NULL;
1234 }
1235
1236 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1237 ether_setup, 1);
1238 if (!dev) {
1239 wiphy_err(wiphy, "no memory available for netdevice\n");
1240 goto error;
1241 }
1242
1243 dev_net_set(dev, wiphy_net(wiphy));
1244 dev->ieee80211_ptr = priv->wdev;
1245 dev->ieee80211_ptr->iftype = priv->bss_mode;
1246 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1247 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1248 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1249
1250 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1251 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1252 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1253
1254 mdev_priv = netdev_priv(dev);
1255 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1256
1257 priv->netdev = dev;
1258 mwifiex_init_priv_params(priv, dev);
1259
1260 SET_NETDEV_DEV(dev, adapter->dev);
1261
1262 /* Register network device */
1263 if (register_netdevice(dev)) {
1264 wiphy_err(wiphy, "cannot register virtual network device\n");
1265 goto error;
1266 }
1267
1268 sema_init(&priv->async_sem, 1);
1269 priv->scan_pending_on_block = false;
1270
1271 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1272
1273 #ifdef CONFIG_DEBUG_FS
1274 mwifiex_dev_debugfs_init(priv);
1275 #endif
1276 return dev;
1277 error:
1278 if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1279 free_netdev(dev);
1280 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1281
1282 return NULL;
1283 }
1284 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1285
1286 /*
1287 * del_virtual_intf: remove the virtual interface determined by dev
1288 */
1289 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1290 {
1291 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1292
1293 if (!priv || !dev)
1294 return 0;
1295
1296 #ifdef CONFIG_DEBUG_FS
1297 mwifiex_dev_debugfs_remove(priv);
1298 #endif
1299
1300 if (!netif_queue_stopped(priv->netdev))
1301 netif_stop_queue(priv->netdev);
1302
1303 if (netif_carrier_ok(priv->netdev))
1304 netif_carrier_off(priv->netdev);
1305
1306 if (dev->reg_state == NETREG_REGISTERED)
1307 unregister_netdevice(dev);
1308
1309 if (dev->reg_state == NETREG_UNREGISTERED)
1310 free_netdev(dev);
1311
1312 /* Clear the priv in adapter */
1313 priv->netdev = NULL;
1314
1315 priv->media_connected = false;
1316
1317 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1318
1319 return 0;
1320 }
1321 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1322
1323 /* station cfg80211 operations */
1324 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1325 .add_virtual_intf = mwifiex_add_virtual_intf,
1326 .del_virtual_intf = mwifiex_del_virtual_intf,
1327 .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1328 .scan = mwifiex_cfg80211_scan,
1329 .connect = mwifiex_cfg80211_connect,
1330 .disconnect = mwifiex_cfg80211_disconnect,
1331 .get_station = mwifiex_cfg80211_get_station,
1332 .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1333 .set_channel = mwifiex_cfg80211_set_channel,
1334 .join_ibss = mwifiex_cfg80211_join_ibss,
1335 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1336 .add_key = mwifiex_cfg80211_add_key,
1337 .del_key = mwifiex_cfg80211_del_key,
1338 .set_default_key = mwifiex_cfg80211_set_default_key,
1339 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1340 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1341 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1342 };
1343
1344 /*
1345 * This function registers the device with CFG802.11 subsystem.
1346 *
1347 * The function creates the wireless device/wiphy, populates it with
1348 * default parameters and handler function pointers, and finally
1349 * registers the device.
1350 */
1351 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1352 {
1353 int ret;
1354 void *wdev_priv;
1355 struct wireless_dev *wdev;
1356
1357 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1358 if (!wdev) {
1359 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1360 __func__);
1361 return -ENOMEM;
1362 }
1363 wdev->wiphy =
1364 wiphy_new(&mwifiex_cfg80211_ops,
1365 sizeof(struct mwifiex_private *));
1366 if (!wdev->wiphy) {
1367 kfree(wdev);
1368 return -ENOMEM;
1369 }
1370 wdev->iftype = NL80211_IFTYPE_STATION;
1371 wdev->wiphy->max_scan_ssids = 10;
1372 wdev->wiphy->interface_modes =
1373 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1374
1375 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1376 mwifiex_setup_ht_caps(
1377 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1378
1379 if (priv->adapter->config_bands & BAND_A) {
1380 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1381 mwifiex_setup_ht_caps(
1382 &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1383 } else {
1384 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1385 }
1386
1387 /* Initialize cipher suits */
1388 wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1389 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1390
1391 memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1392 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1393
1394 /* Reserve space for bss band information */
1395 wdev->wiphy->bss_priv_size = sizeof(u8);
1396
1397 wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1398
1399 /* Set struct mwifiex_private pointer in wiphy_priv */
1400 wdev_priv = wiphy_priv(wdev->wiphy);
1401
1402 *(unsigned long *) wdev_priv = (unsigned long) priv;
1403
1404 set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1405
1406 ret = wiphy_register(wdev->wiphy);
1407 if (ret < 0) {
1408 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1409 __func__);
1410 wiphy_free(wdev->wiphy);
1411 kfree(wdev);
1412 return ret;
1413 } else {
1414 dev_dbg(priv->adapter->dev,
1415 "info: successfully registered wiphy device\n");
1416 }
1417
1418 priv->wdev = wdev;
1419
1420 return ret;
1421 }