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mwifiex: remove redundant signal handling code
[deliverable/linux.git] / drivers / net / wireless / mwifiex / cfg80211.c
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_netdev_get_priv(netdev);
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_netdev_get_priv(dev);
126 u32 ps_mode;
127
128 if (timeout)
129 wiphy_dbg(wiphy,
130 "info: ignore timeout value for IEEE Power Save\n");
131
132 ps_mode = enabled;
133
134 return mwifiex_drv_set_power(priv, &ps_mode);
135 }
136
137 /*
138 * CFG802.11 operation handler to set the default network key.
139 */
140 static int
141 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
142 u8 key_index, bool unicast,
143 bool multicast)
144 {
145 struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
146
147 /* Return if WEP key not configured */
148 if (!priv->sec_info.wep_enabled)
149 return 0;
150
151 if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
152 wiphy_err(wiphy, "set default Tx key index\n");
153 return -EFAULT;
154 }
155
156 return 0;
157 }
158
159 /*
160 * CFG802.11 operation handler to add a network key.
161 */
162 static int
163 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
164 u8 key_index, bool pairwise, const u8 *mac_addr,
165 struct key_params *params)
166 {
167 struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
168
169 if (mwifiex_set_encode(priv, params->key, params->key_len,
170 key_index, 0)) {
171 wiphy_err(wiphy, "crypto keys added\n");
172 return -EFAULT;
173 }
174
175 return 0;
176 }
177
178 /*
179 * This function sends domain information to the firmware.
180 *
181 * The following information are passed to the firmware -
182 * - Country codes
183 * - Sub bands (first channel, number of channels, maximum Tx power)
184 */
185 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
186 {
187 u8 no_of_triplet = 0;
188 struct ieee80211_country_ie_triplet *t;
189 u8 no_of_parsed_chan = 0;
190 u8 first_chan = 0, next_chan = 0, max_pwr = 0;
191 u8 i, flag = 0;
192 enum ieee80211_band band;
193 struct ieee80211_supported_band *sband;
194 struct ieee80211_channel *ch;
195 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
196 struct mwifiex_adapter *adapter = priv->adapter;
197 struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
198
199 /* Set country code */
200 domain_info->country_code[0] = priv->country_code[0];
201 domain_info->country_code[1] = priv->country_code[1];
202 domain_info->country_code[2] = ' ';
203
204 band = mwifiex_band_to_radio_type(adapter->config_bands);
205 if (!wiphy->bands[band]) {
206 wiphy_err(wiphy, "11D: setting domain info in FW\n");
207 return -1;
208 }
209
210 sband = wiphy->bands[band];
211
212 for (i = 0; i < sband->n_channels ; i++) {
213 ch = &sband->channels[i];
214 if (ch->flags & IEEE80211_CHAN_DISABLED)
215 continue;
216
217 if (!flag) {
218 flag = 1;
219 first_chan = (u32) ch->hw_value;
220 next_chan = first_chan;
221 max_pwr = ch->max_power;
222 no_of_parsed_chan = 1;
223 continue;
224 }
225
226 if (ch->hw_value == next_chan + 1 &&
227 ch->max_power == max_pwr) {
228 next_chan++;
229 no_of_parsed_chan++;
230 } else {
231 t = &domain_info->triplet[no_of_triplet];
232 t->chans.first_channel = first_chan;
233 t->chans.num_channels = no_of_parsed_chan;
234 t->chans.max_power = max_pwr;
235 no_of_triplet++;
236 first_chan = (u32) ch->hw_value;
237 next_chan = first_chan;
238 max_pwr = ch->max_power;
239 no_of_parsed_chan = 1;
240 }
241 }
242
243 if (flag) {
244 t = &domain_info->triplet[no_of_triplet];
245 t->chans.first_channel = first_chan;
246 t->chans.num_channels = no_of_parsed_chan;
247 t->chans.max_power = max_pwr;
248 no_of_triplet++;
249 }
250
251 domain_info->no_of_triplet = no_of_triplet;
252
253 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
254 HostCmd_ACT_GEN_SET, 0, NULL)) {
255 wiphy_err(wiphy, "11D: setting domain info in FW\n");
256 return -1;
257 }
258
259 return 0;
260 }
261
262 /*
263 * CFG802.11 regulatory domain callback function.
264 *
265 * This function is called when the regulatory domain is changed due to the
266 * following reasons -
267 * - Set by driver
268 * - Set by system core
269 * - Set by user
270 * - Set bt Country IE
271 */
272 static int mwifiex_reg_notifier(struct wiphy *wiphy,
273 struct regulatory_request *request)
274 {
275 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
276
277 wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
278 " %c%c\n", request->alpha2[0], request->alpha2[1]);
279
280 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
281
282 switch (request->initiator) {
283 case NL80211_REGDOM_SET_BY_DRIVER:
284 case NL80211_REGDOM_SET_BY_CORE:
285 case NL80211_REGDOM_SET_BY_USER:
286 break;
287 /* Todo: apply driver specific changes in channel flags based
288 on the request initiator if necessary. */
289 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
290 break;
291 }
292 mwifiex_send_domain_info_cmd_fw(wiphy);
293
294 return 0;
295 }
296
297 /*
298 * This function sets the RF channel.
299 *
300 * This function creates multiple IOCTL requests, populates them accordingly
301 * and issues them to set the band/channel and frequency.
302 */
303 static int
304 mwifiex_set_rf_channel(struct mwifiex_private *priv,
305 struct ieee80211_channel *chan,
306 enum nl80211_channel_type channel_type)
307 {
308 struct mwifiex_chan_freq_power cfp;
309 u32 config_bands = 0;
310 struct wiphy *wiphy = priv->wdev->wiphy;
311 struct mwifiex_adapter *adapter = priv->adapter;
312
313 if (chan) {
314 /* Set appropriate bands */
315 if (chan->band == IEEE80211_BAND_2GHZ) {
316 if (channel_type == NL80211_CHAN_NO_HT)
317 if (priv->adapter->config_bands == BAND_B ||
318 priv->adapter->config_bands == BAND_G)
319 config_bands =
320 priv->adapter->config_bands;
321 else
322 config_bands = BAND_B | BAND_G;
323 else
324 config_bands = BAND_B | BAND_G | BAND_GN;
325 } else {
326 if (channel_type == NL80211_CHAN_NO_HT)
327 config_bands = BAND_A;
328 else
329 config_bands = BAND_AN | BAND_A;
330 }
331
332 if (!((config_bands | adapter->fw_bands) &
333 ~adapter->fw_bands)) {
334 adapter->config_bands = config_bands;
335 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
336 adapter->adhoc_start_band = config_bands;
337 if ((config_bands & BAND_GN) ||
338 (config_bands & BAND_AN))
339 adapter->adhoc_11n_enabled = true;
340 else
341 adapter->adhoc_11n_enabled = false;
342 }
343 }
344 adapter->sec_chan_offset =
345 mwifiex_cfg80211_channel_type_to_sec_chan_offset
346 (channel_type);
347 adapter->channel_type = channel_type;
348
349 mwifiex_send_domain_info_cmd_fw(wiphy);
350 }
351
352 wiphy_dbg(wiphy, "info: setting band %d, chan offset %d, mode %d\n",
353 config_bands, adapter->sec_chan_offset, priv->bss_mode);
354 if (!chan)
355 return 0;
356
357 memset(&cfp, 0, sizeof(cfp));
358 cfp.freq = chan->center_freq;
359 cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
360
361 if (mwifiex_bss_set_channel(priv, &cfp))
362 return -EFAULT;
363
364 return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
365 }
366
367 /*
368 * CFG802.11 operation handler to set channel.
369 *
370 * This function can only be used when station is not connected.
371 */
372 static int
373 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
374 struct ieee80211_channel *chan,
375 enum nl80211_channel_type channel_type)
376 {
377 struct mwifiex_private *priv;
378
379 if (dev)
380 priv = mwifiex_netdev_get_priv(dev);
381 else
382 priv = mwifiex_cfg80211_get_priv(wiphy);
383
384 if (priv->media_connected) {
385 wiphy_err(wiphy, "This setting is valid only when station "
386 "is not connected\n");
387 return -EINVAL;
388 }
389
390 return mwifiex_set_rf_channel(priv, chan, channel_type);
391 }
392
393 /*
394 * This function sets the fragmentation threshold.
395 *
396 * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
397 * and MWIFIEX_FRAG_MAX_VALUE.
398 */
399 static int
400 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
401 {
402 int ret;
403
404 if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
405 frag_thr > MWIFIEX_FRAG_MAX_VALUE)
406 return -EINVAL;
407
408 /* Send request to firmware */
409 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
410 HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
411 &frag_thr);
412
413 return ret;
414 }
415
416 /*
417 * This function sets the RTS threshold.
418
419 * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
420 * and MWIFIEX_RTS_MAX_VALUE.
421 */
422 static int
423 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
424 {
425 if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
426 rts_thr = MWIFIEX_RTS_MAX_VALUE;
427
428 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
429 HostCmd_ACT_GEN_SET, RTS_THRESH_I,
430 &rts_thr);
431 }
432
433 /*
434 * CFG802.11 operation handler to set wiphy parameters.
435 *
436 * This function can be used to set the RTS threshold and the
437 * Fragmentation threshold of the driver.
438 */
439 static int
440 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
441 {
442 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
443 int ret = 0;
444
445 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
446 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
447 if (ret)
448 return ret;
449 }
450
451 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
452 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
453
454 return ret;
455 }
456
457 /*
458 * CFG802.11 operation handler to change interface type.
459 */
460 static int
461 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
462 struct net_device *dev,
463 enum nl80211_iftype type, u32 *flags,
464 struct vif_params *params)
465 {
466 int ret;
467 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
468
469 if (priv->bss_mode == type) {
470 wiphy_warn(wiphy, "already set to required type\n");
471 return 0;
472 }
473
474 priv->bss_mode = type;
475
476 switch (type) {
477 case NL80211_IFTYPE_ADHOC:
478 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
479 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
480 break;
481 case NL80211_IFTYPE_STATION:
482 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
483 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
484 break;
485 case NL80211_IFTYPE_UNSPECIFIED:
486 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
487 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
488 return 0;
489 default:
490 wiphy_err(wiphy, "unknown interface type: %d\n", type);
491 return -EINVAL;
492 }
493
494 mwifiex_deauthenticate(priv, NULL);
495
496 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
497
498 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
499 HostCmd_ACT_GEN_SET, 0, NULL);
500
501 return ret;
502 }
503
504 /*
505 * This function dumps the station information on a buffer.
506 *
507 * The following information are shown -
508 * - Total bytes transmitted
509 * - Total bytes received
510 * - Total packets transmitted
511 * - Total packets received
512 * - Signal quality level
513 * - Transmission rate
514 */
515 static int
516 mwifiex_dump_station_info(struct mwifiex_private *priv,
517 struct station_info *sinfo)
518 {
519 struct mwifiex_rate_cfg rate;
520
521 sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
522 STATION_INFO_RX_PACKETS |
523 STATION_INFO_TX_PACKETS
524 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
525
526 /* Get signal information from the firmware */
527 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
528 HostCmd_ACT_GEN_GET, 0, NULL)) {
529 dev_err(priv->adapter->dev, "failed to get signal information\n");
530 return -EFAULT;
531 }
532
533 if (mwifiex_drv_get_data_rate(priv, &rate)) {
534 dev_err(priv->adapter->dev, "getting data rate\n");
535 return -EFAULT;
536 }
537
538 /* Get DTIM period information from firmware */
539 mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
540 HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
541 &priv->dtim_period);
542
543 /*
544 * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
545 * MCS index values for us are 0 to 7.
546 */
547 if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
548 sinfo->txrate.mcs = priv->tx_rate;
549 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
550 /* 40MHz rate */
551 if (priv->tx_htinfo & BIT(1))
552 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
553 /* SGI enabled */
554 if (priv->tx_htinfo & BIT(2))
555 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
556 }
557
558 sinfo->rx_bytes = priv->stats.rx_bytes;
559 sinfo->tx_bytes = priv->stats.tx_bytes;
560 sinfo->rx_packets = priv->stats.rx_packets;
561 sinfo->tx_packets = priv->stats.tx_packets;
562 sinfo->signal = priv->bcn_rssi_avg;
563 /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
564 sinfo->txrate.legacy = rate.rate * 5;
565
566 if (priv->bss_mode == NL80211_IFTYPE_STATION) {
567 sinfo->filled |= STATION_INFO_BSS_PARAM;
568 sinfo->bss_param.flags = 0;
569 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
570 WLAN_CAPABILITY_SHORT_PREAMBLE)
571 sinfo->bss_param.flags |=
572 BSS_PARAM_FLAGS_SHORT_PREAMBLE;
573 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
574 WLAN_CAPABILITY_SHORT_SLOT_TIME)
575 sinfo->bss_param.flags |=
576 BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
577 sinfo->bss_param.dtim_period = priv->dtim_period;
578 sinfo->bss_param.beacon_interval =
579 priv->curr_bss_params.bss_descriptor.beacon_period;
580 }
581
582 return 0;
583 }
584
585 /*
586 * CFG802.11 operation handler to get station information.
587 *
588 * This function only works in connected mode, and dumps the
589 * requested station information, if available.
590 */
591 static int
592 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
593 u8 *mac, struct station_info *sinfo)
594 {
595 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
596
597 if (!priv->media_connected)
598 return -ENOENT;
599 if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
600 return -ENOENT;
601
602 return mwifiex_dump_station_info(priv, sinfo);
603 }
604
605 /*
606 * CFG802.11 operation handler to dump station information.
607 */
608 static int
609 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
610 int idx, u8 *mac, struct station_info *sinfo)
611 {
612 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
613
614 if (!priv->media_connected || idx)
615 return -ENOENT;
616
617 memcpy(mac, priv->cfg_bssid, ETH_ALEN);
618
619 return mwifiex_dump_station_info(priv, sinfo);
620 }
621
622 /* Supported rates to be advertised to the cfg80211 */
623
624 static struct ieee80211_rate mwifiex_rates[] = {
625 {.bitrate = 10, .hw_value = 2, },
626 {.bitrate = 20, .hw_value = 4, },
627 {.bitrate = 55, .hw_value = 11, },
628 {.bitrate = 110, .hw_value = 22, },
629 {.bitrate = 60, .hw_value = 12, },
630 {.bitrate = 90, .hw_value = 18, },
631 {.bitrate = 120, .hw_value = 24, },
632 {.bitrate = 180, .hw_value = 36, },
633 {.bitrate = 240, .hw_value = 48, },
634 {.bitrate = 360, .hw_value = 72, },
635 {.bitrate = 480, .hw_value = 96, },
636 {.bitrate = 540, .hw_value = 108, },
637 };
638
639 /* Channel definitions to be advertised to cfg80211 */
640
641 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
642 {.center_freq = 2412, .hw_value = 1, },
643 {.center_freq = 2417, .hw_value = 2, },
644 {.center_freq = 2422, .hw_value = 3, },
645 {.center_freq = 2427, .hw_value = 4, },
646 {.center_freq = 2432, .hw_value = 5, },
647 {.center_freq = 2437, .hw_value = 6, },
648 {.center_freq = 2442, .hw_value = 7, },
649 {.center_freq = 2447, .hw_value = 8, },
650 {.center_freq = 2452, .hw_value = 9, },
651 {.center_freq = 2457, .hw_value = 10, },
652 {.center_freq = 2462, .hw_value = 11, },
653 {.center_freq = 2467, .hw_value = 12, },
654 {.center_freq = 2472, .hw_value = 13, },
655 {.center_freq = 2484, .hw_value = 14, },
656 };
657
658 static struct ieee80211_supported_band mwifiex_band_2ghz = {
659 .channels = mwifiex_channels_2ghz,
660 .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
661 .bitrates = mwifiex_rates,
662 .n_bitrates = ARRAY_SIZE(mwifiex_rates),
663 };
664
665 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
666 {.center_freq = 5040, .hw_value = 8, },
667 {.center_freq = 5060, .hw_value = 12, },
668 {.center_freq = 5080, .hw_value = 16, },
669 {.center_freq = 5170, .hw_value = 34, },
670 {.center_freq = 5190, .hw_value = 38, },
671 {.center_freq = 5210, .hw_value = 42, },
672 {.center_freq = 5230, .hw_value = 46, },
673 {.center_freq = 5180, .hw_value = 36, },
674 {.center_freq = 5200, .hw_value = 40, },
675 {.center_freq = 5220, .hw_value = 44, },
676 {.center_freq = 5240, .hw_value = 48, },
677 {.center_freq = 5260, .hw_value = 52, },
678 {.center_freq = 5280, .hw_value = 56, },
679 {.center_freq = 5300, .hw_value = 60, },
680 {.center_freq = 5320, .hw_value = 64, },
681 {.center_freq = 5500, .hw_value = 100, },
682 {.center_freq = 5520, .hw_value = 104, },
683 {.center_freq = 5540, .hw_value = 108, },
684 {.center_freq = 5560, .hw_value = 112, },
685 {.center_freq = 5580, .hw_value = 116, },
686 {.center_freq = 5600, .hw_value = 120, },
687 {.center_freq = 5620, .hw_value = 124, },
688 {.center_freq = 5640, .hw_value = 128, },
689 {.center_freq = 5660, .hw_value = 132, },
690 {.center_freq = 5680, .hw_value = 136, },
691 {.center_freq = 5700, .hw_value = 140, },
692 {.center_freq = 5745, .hw_value = 149, },
693 {.center_freq = 5765, .hw_value = 153, },
694 {.center_freq = 5785, .hw_value = 157, },
695 {.center_freq = 5805, .hw_value = 161, },
696 {.center_freq = 5825, .hw_value = 165, },
697 };
698
699 static struct ieee80211_supported_band mwifiex_band_5ghz = {
700 .channels = mwifiex_channels_5ghz,
701 .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
702 .bitrates = mwifiex_rates + 4,
703 .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
704 };
705
706
707 /* Supported crypto cipher suits to be advertised to cfg80211 */
708
709 static const u32 mwifiex_cipher_suites[] = {
710 WLAN_CIPHER_SUITE_WEP40,
711 WLAN_CIPHER_SUITE_WEP104,
712 WLAN_CIPHER_SUITE_TKIP,
713 WLAN_CIPHER_SUITE_CCMP,
714 };
715
716 /*
717 * CFG802.11 operation handler for setting bit rates.
718 *
719 * Function selects legacy bang B/G/BG from corresponding bitrates selection.
720 * Currently only 2.4GHz band is supported.
721 */
722 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
723 struct net_device *dev,
724 const u8 *peer,
725 const struct cfg80211_bitrate_mask *mask)
726 {
727 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
728 int index = 0, mode = 0, i;
729 struct mwifiex_adapter *adapter = priv->adapter;
730
731 /* Currently only 2.4GHz is supported */
732 for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
733 /*
734 * Rates below 6 Mbps in the table are CCK rates; 802.11b
735 * and from 6 they are OFDM; 802.11G
736 */
737 if (mwifiex_rates[i].bitrate == 60) {
738 index = 1 << i;
739 break;
740 }
741 }
742
743 if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
744 mode = BAND_B;
745 } else {
746 mode = BAND_G;
747 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
748 mode |= BAND_B;
749 }
750
751 if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
752 adapter->config_bands = mode;
753 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
754 adapter->adhoc_start_band = mode;
755 adapter->adhoc_11n_enabled = false;
756 }
757 }
758 adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
759 adapter->channel_type = NL80211_CHAN_NO_HT;
760
761 wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
762 (mode & BAND_B) ? "b" : "", (mode & BAND_G) ? "g" : "");
763
764 return 0;
765 }
766
767 /*
768 * CFG802.11 operation handler for disconnection request.
769 *
770 * This function does not work when there is already a disconnection
771 * procedure going on.
772 */
773 static int
774 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
775 u16 reason_code)
776 {
777 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
778
779 if (mwifiex_deauthenticate(priv, NULL))
780 return -EFAULT;
781
782 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
783 " reason code %d\n", priv->cfg_bssid, reason_code);
784
785 memset(priv->cfg_bssid, 0, ETH_ALEN);
786
787 return 0;
788 }
789
790 /*
791 * This function informs the CFG802.11 subsystem of a new IBSS.
792 *
793 * The following information are sent to the CFG802.11 subsystem
794 * to register the new IBSS. If we do not register the new IBSS,
795 * a kernel panic will result.
796 * - SSID
797 * - SSID length
798 * - BSSID
799 * - Channel
800 */
801 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
802 {
803 struct ieee80211_channel *chan;
804 struct mwifiex_bss_info bss_info;
805 struct cfg80211_bss *bss;
806 int ie_len;
807 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
808 enum ieee80211_band band;
809
810 if (mwifiex_get_bss_info(priv, &bss_info))
811 return -1;
812
813 ie_buf[0] = WLAN_EID_SSID;
814 ie_buf[1] = bss_info.ssid.ssid_len;
815
816 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
817 &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
818 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
819
820 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
821 chan = __ieee80211_get_channel(priv->wdev->wiphy,
822 ieee80211_channel_to_frequency(bss_info.bss_chan,
823 band));
824
825 bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
826 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
827 0, ie_buf, ie_len, 0, GFP_KERNEL);
828 cfg80211_put_bss(bss);
829 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
830
831 return 0;
832 }
833
834 /*
835 * This function connects with a BSS.
836 *
837 * This function handles both Infra and Ad-Hoc modes. It also performs
838 * validity checking on the provided parameters, disconnects from the
839 * current BSS (if any), sets up the association/scan parameters,
840 * including security settings, and performs specific SSID scan before
841 * trying to connect.
842 *
843 * For Infra mode, the function returns failure if the specified SSID
844 * is not found in scan table. However, for Ad-Hoc mode, it can create
845 * the IBSS if it does not exist. On successful completion in either case,
846 * the function notifies the CFG802.11 subsystem of the new BSS connection.
847 */
848 static int
849 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
850 u8 *bssid, int mode, struct ieee80211_channel *channel,
851 struct cfg80211_connect_params *sme, bool privacy)
852 {
853 struct cfg80211_ssid req_ssid;
854 int ret, auth_type = 0;
855 struct cfg80211_bss *bss = NULL;
856 u8 is_scanning_required = 0;
857
858 memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
859
860 req_ssid.ssid_len = ssid_len;
861 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
862 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
863 return -EINVAL;
864 }
865
866 memcpy(req_ssid.ssid, ssid, ssid_len);
867 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
868 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
869 return -EINVAL;
870 }
871
872 /* disconnect before try to associate */
873 mwifiex_deauthenticate(priv, NULL);
874
875 if (channel)
876 ret = mwifiex_set_rf_channel(priv, channel,
877 priv->adapter->channel_type);
878
879 /* As this is new association, clear locally stored
880 * keys and security related flags */
881 priv->sec_info.wpa_enabled = false;
882 priv->sec_info.wpa2_enabled = false;
883 priv->wep_key_curr_index = 0;
884 priv->sec_info.encryption_mode = 0;
885 priv->sec_info.is_authtype_auto = 0;
886 ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
887
888 if (mode == NL80211_IFTYPE_ADHOC) {
889 /* "privacy" is set only for ad-hoc mode */
890 if (privacy) {
891 /*
892 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
893 * the firmware can find a matching network from the
894 * scan. The cfg80211 does not give us the encryption
895 * mode at this stage so just setting it to WEP here.
896 */
897 priv->sec_info.encryption_mode =
898 WLAN_CIPHER_SUITE_WEP104;
899 priv->sec_info.authentication_mode =
900 NL80211_AUTHTYPE_OPEN_SYSTEM;
901 }
902
903 goto done;
904 }
905
906 /* Now handle infra mode. "sme" is valid for infra mode only */
907 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
908 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
909 priv->sec_info.is_authtype_auto = 1;
910 } else {
911 auth_type = sme->auth_type;
912 }
913
914 if (sme->crypto.n_ciphers_pairwise) {
915 priv->sec_info.encryption_mode =
916 sme->crypto.ciphers_pairwise[0];
917 priv->sec_info.authentication_mode = auth_type;
918 }
919
920 if (sme->crypto.cipher_group) {
921 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
922 priv->sec_info.authentication_mode = auth_type;
923 }
924 if (sme->ie)
925 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
926
927 if (sme->key) {
928 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
929 dev_dbg(priv->adapter->dev,
930 "info: setting wep encryption"
931 " with key len %d\n", sme->key_len);
932 priv->wep_key_curr_index = sme->key_idx;
933 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
934 sme->key_idx, 0);
935 }
936 }
937 done:
938 /*
939 * Scan entries are valid for some time (15 sec). So we can save one
940 * active scan time if we just try cfg80211_get_bss first. If it fails
941 * then request scan and cfg80211_get_bss() again for final output.
942 */
943 while (1) {
944 if (is_scanning_required) {
945 /* Do specific SSID scanning */
946 if (mwifiex_request_scan(priv, &req_ssid)) {
947 dev_err(priv->adapter->dev, "scan error\n");
948 return -EFAULT;
949 }
950 }
951
952 /* Find the BSS we want using available scan results */
953 if (mode == NL80211_IFTYPE_ADHOC)
954 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
955 bssid, ssid, ssid_len,
956 WLAN_CAPABILITY_IBSS,
957 WLAN_CAPABILITY_IBSS);
958 else
959 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
960 bssid, ssid, ssid_len,
961 WLAN_CAPABILITY_ESS,
962 WLAN_CAPABILITY_ESS);
963
964 if (!bss) {
965 if (is_scanning_required) {
966 dev_warn(priv->adapter->dev,
967 "assoc: requested bss not found in scan results\n");
968 break;
969 }
970 is_scanning_required = 1;
971 } else {
972 dev_dbg(priv->adapter->dev,
973 "info: trying to associate to '%s' bssid %pM\n",
974 (char *) req_ssid.ssid, bss->bssid);
975 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
976 break;
977 }
978 }
979
980 if (mwifiex_bss_start(priv, bss, &req_ssid))
981 return -EFAULT;
982
983 if (mode == NL80211_IFTYPE_ADHOC) {
984 /* Inform the BSS information to kernel, otherwise
985 * kernel will give a panic after successful assoc */
986 if (mwifiex_cfg80211_inform_ibss_bss(priv))
987 return -EFAULT;
988 }
989
990 return ret;
991 }
992
993 /*
994 * CFG802.11 operation handler for association request.
995 *
996 * This function does not work when the current mode is set to Ad-Hoc, or
997 * when there is already an association procedure going on. The given BSS
998 * information is used to associate.
999 */
1000 static int
1001 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1002 struct cfg80211_connect_params *sme)
1003 {
1004 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1005 int ret = 0;
1006
1007 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1008 wiphy_err(wiphy, "received infra assoc request "
1009 "when station is in ibss mode\n");
1010 goto done;
1011 }
1012
1013 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1014 (char *) sme->ssid, sme->bssid);
1015
1016 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1017 priv->bss_mode, sme->channel, sme, 0);
1018 done:
1019 if (!ret) {
1020 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1021 NULL, 0, WLAN_STATUS_SUCCESS,
1022 GFP_KERNEL);
1023 dev_dbg(priv->adapter->dev,
1024 "info: associated to bssid %pM successfully\n",
1025 priv->cfg_bssid);
1026 } else {
1027 dev_dbg(priv->adapter->dev,
1028 "info: association to bssid %pM failed\n",
1029 priv->cfg_bssid);
1030 memset(priv->cfg_bssid, 0, ETH_ALEN);
1031 }
1032
1033 return ret;
1034 }
1035
1036 /*
1037 * CFG802.11 operation handler to join an IBSS.
1038 *
1039 * This function does not work in any mode other than Ad-Hoc, or if
1040 * a join operation is already in progress.
1041 */
1042 static int
1043 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1044 struct cfg80211_ibss_params *params)
1045 {
1046 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1047 int ret = 0;
1048
1049 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1050 wiphy_err(wiphy, "request to join ibss received "
1051 "when station is not in ibss mode\n");
1052 goto done;
1053 }
1054
1055 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1056 (char *) params->ssid, params->bssid);
1057
1058 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1059 params->bssid, priv->bss_mode,
1060 params->channel, NULL, params->privacy);
1061 done:
1062 if (!ret) {
1063 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1064 dev_dbg(priv->adapter->dev,
1065 "info: joined/created adhoc network with bssid"
1066 " %pM successfully\n", priv->cfg_bssid);
1067 } else {
1068 dev_dbg(priv->adapter->dev,
1069 "info: failed creating/joining adhoc network\n");
1070 }
1071
1072 return ret;
1073 }
1074
1075 /*
1076 * CFG802.11 operation handler to leave an IBSS.
1077 *
1078 * This function does not work if a leave operation is
1079 * already in progress.
1080 */
1081 static int
1082 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1083 {
1084 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1085
1086 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1087 priv->cfg_bssid);
1088 if (mwifiex_deauthenticate(priv, NULL))
1089 return -EFAULT;
1090
1091 memset(priv->cfg_bssid, 0, ETH_ALEN);
1092
1093 return 0;
1094 }
1095
1096 /*
1097 * CFG802.11 operation handler for scan request.
1098 *
1099 * This function issues a scan request to the firmware based upon
1100 * the user specified scan configuration. On successfull completion,
1101 * it also informs the results.
1102 */
1103 static int
1104 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1105 struct cfg80211_scan_request *request)
1106 {
1107 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1108 int i;
1109 struct ieee80211_channel *chan;
1110
1111 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1112
1113 priv->scan_request = request;
1114
1115 priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1116 GFP_KERNEL);
1117 if (!priv->user_scan_cfg) {
1118 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1119 return -ENOMEM;
1120 }
1121
1122 priv->user_scan_cfg->num_ssids = request->n_ssids;
1123 priv->user_scan_cfg->ssid_list = request->ssids;
1124
1125 for (i = 0; i < request->n_channels; i++) {
1126 chan = request->channels[i];
1127 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1128 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1129
1130 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1131 priv->user_scan_cfg->chan_list[i].scan_type =
1132 MWIFIEX_SCAN_TYPE_PASSIVE;
1133 else
1134 priv->user_scan_cfg->chan_list[i].scan_type =
1135 MWIFIEX_SCAN_TYPE_ACTIVE;
1136
1137 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1138 }
1139 if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1140 return -EFAULT;
1141
1142 return 0;
1143 }
1144
1145 /*
1146 * This function sets up the CFG802.11 specific HT capability fields
1147 * with default values.
1148 *
1149 * The following default values are set -
1150 * - HT Supported = True
1151 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1152 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1153 * - HT Capabilities supported by firmware
1154 * - MCS information, Rx mask = 0xff
1155 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1156 */
1157 static void
1158 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1159 struct mwifiex_private *priv)
1160 {
1161 int rx_mcs_supp;
1162 struct ieee80211_mcs_info mcs_set;
1163 u8 *mcs = (u8 *)&mcs_set;
1164 struct mwifiex_adapter *adapter = priv->adapter;
1165
1166 ht_info->ht_supported = true;
1167 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1168 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1169
1170 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1171
1172 /* Fill HT capability information */
1173 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1174 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1175 else
1176 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1177
1178 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1179 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1180 else
1181 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1182
1183 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1184 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1185 else
1186 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1187
1188 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1189 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1190 else
1191 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1192
1193 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1194 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1195 else
1196 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1197
1198 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1199 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1200
1201 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1202 /* Set MCS for 1x1 */
1203 memset(mcs, 0xff, rx_mcs_supp);
1204 /* Clear all the other values */
1205 memset(&mcs[rx_mcs_supp], 0,
1206 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1207 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1208 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1209 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1210 SETHT_MCS32(mcs_set.rx_mask);
1211
1212 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1213
1214 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1215 }
1216
1217 /*
1218 * create a new virtual interface with the given name
1219 */
1220 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1221 char *name,
1222 enum nl80211_iftype type,
1223 u32 *flags,
1224 struct vif_params *params)
1225 {
1226 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1227 struct mwifiex_adapter *adapter;
1228 struct net_device *dev;
1229 void *mdev_priv;
1230
1231 if (!priv)
1232 return NULL;
1233
1234 adapter = priv->adapter;
1235 if (!adapter)
1236 return NULL;
1237
1238 switch (type) {
1239 case NL80211_IFTYPE_UNSPECIFIED:
1240 case NL80211_IFTYPE_STATION:
1241 case NL80211_IFTYPE_ADHOC:
1242 if (priv->bss_mode) {
1243 wiphy_err(wiphy, "cannot create multiple"
1244 " station/adhoc interfaces\n");
1245 return NULL;
1246 }
1247
1248 if (type == NL80211_IFTYPE_UNSPECIFIED)
1249 priv->bss_mode = NL80211_IFTYPE_STATION;
1250 else
1251 priv->bss_mode = type;
1252
1253 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1254 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1255 priv->bss_priority = 0;
1256 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1257 priv->bss_num = 0;
1258
1259 break;
1260 default:
1261 wiphy_err(wiphy, "type not supported\n");
1262 return NULL;
1263 }
1264
1265 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1266 ether_setup, 1);
1267 if (!dev) {
1268 wiphy_err(wiphy, "no memory available for netdevice\n");
1269 goto error;
1270 }
1271
1272 dev_net_set(dev, wiphy_net(wiphy));
1273 dev->ieee80211_ptr = priv->wdev;
1274 dev->ieee80211_ptr->iftype = priv->bss_mode;
1275 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1276 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1277 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1278
1279 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1280 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1281 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1282
1283 mdev_priv = netdev_priv(dev);
1284 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1285
1286 priv->netdev = dev;
1287 mwifiex_init_priv_params(priv, dev);
1288
1289 SET_NETDEV_DEV(dev, adapter->dev);
1290
1291 /* Register network device */
1292 if (register_netdevice(dev)) {
1293 wiphy_err(wiphy, "cannot register virtual network device\n");
1294 goto error;
1295 }
1296
1297 sema_init(&priv->async_sem, 1);
1298 priv->scan_pending_on_block = false;
1299
1300 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1301
1302 #ifdef CONFIG_DEBUG_FS
1303 mwifiex_dev_debugfs_init(priv);
1304 #endif
1305 return dev;
1306 error:
1307 if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1308 free_netdev(dev);
1309 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1310
1311 return NULL;
1312 }
1313 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1314
1315 /*
1316 * del_virtual_intf: remove the virtual interface determined by dev
1317 */
1318 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1319 {
1320 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1321
1322 #ifdef CONFIG_DEBUG_FS
1323 mwifiex_dev_debugfs_remove(priv);
1324 #endif
1325
1326 if (!netif_queue_stopped(priv->netdev))
1327 netif_stop_queue(priv->netdev);
1328
1329 if (netif_carrier_ok(priv->netdev))
1330 netif_carrier_off(priv->netdev);
1331
1332 if (dev->reg_state == NETREG_REGISTERED)
1333 unregister_netdevice(dev);
1334
1335 if (dev->reg_state == NETREG_UNREGISTERED)
1336 free_netdev(dev);
1337
1338 /* Clear the priv in adapter */
1339 priv->netdev = NULL;
1340
1341 priv->media_connected = false;
1342
1343 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1344
1345 return 0;
1346 }
1347 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1348
1349 /* station cfg80211 operations */
1350 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1351 .add_virtual_intf = mwifiex_add_virtual_intf,
1352 .del_virtual_intf = mwifiex_del_virtual_intf,
1353 .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1354 .scan = mwifiex_cfg80211_scan,
1355 .connect = mwifiex_cfg80211_connect,
1356 .disconnect = mwifiex_cfg80211_disconnect,
1357 .get_station = mwifiex_cfg80211_get_station,
1358 .dump_station = mwifiex_cfg80211_dump_station,
1359 .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1360 .set_channel = mwifiex_cfg80211_set_channel,
1361 .join_ibss = mwifiex_cfg80211_join_ibss,
1362 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1363 .add_key = mwifiex_cfg80211_add_key,
1364 .del_key = mwifiex_cfg80211_del_key,
1365 .set_default_key = mwifiex_cfg80211_set_default_key,
1366 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1367 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1368 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1369 };
1370
1371 /*
1372 * This function registers the device with CFG802.11 subsystem.
1373 *
1374 * The function creates the wireless device/wiphy, populates it with
1375 * default parameters and handler function pointers, and finally
1376 * registers the device.
1377 */
1378 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1379 {
1380 int ret;
1381 void *wdev_priv;
1382 struct wireless_dev *wdev;
1383 struct ieee80211_sta_ht_cap *ht_info;
1384
1385 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1386 if (!wdev) {
1387 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1388 __func__);
1389 return -ENOMEM;
1390 }
1391 wdev->wiphy =
1392 wiphy_new(&mwifiex_cfg80211_ops,
1393 sizeof(struct mwifiex_private *));
1394 if (!wdev->wiphy) {
1395 kfree(wdev);
1396 return -ENOMEM;
1397 }
1398 wdev->iftype = NL80211_IFTYPE_STATION;
1399 wdev->wiphy->max_scan_ssids = 10;
1400 wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1401 BIT(NL80211_IFTYPE_ADHOC);
1402
1403 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1404 ht_info = &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap;
1405 mwifiex_setup_ht_caps(ht_info, priv);
1406
1407 if (priv->adapter->config_bands & BAND_A) {
1408 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1409 ht_info = &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap;
1410 mwifiex_setup_ht_caps(ht_info, priv);
1411 } else {
1412 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1413 }
1414
1415 /* Initialize cipher suits */
1416 wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1417 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1418
1419 memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1420 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1421
1422 /* Reserve space for bss band information */
1423 wdev->wiphy->bss_priv_size = sizeof(u8);
1424
1425 wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1426
1427 /* Set struct mwifiex_private pointer in wiphy_priv */
1428 wdev_priv = wiphy_priv(wdev->wiphy);
1429
1430 *(unsigned long *) wdev_priv = (unsigned long) priv;
1431
1432 set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1433
1434 ret = wiphy_register(wdev->wiphy);
1435 if (ret < 0) {
1436 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1437 __func__);
1438 wiphy_free(wdev->wiphy);
1439 kfree(wdev);
1440 return ret;
1441 } else {
1442 dev_dbg(priv->adapter->dev,
1443 "info: successfully registered wiphy device\n");
1444 }
1445
1446 priv->wdev = wdev;
1447
1448 return ret;
1449 }
Linux kernel - Deliverables
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