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
mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type channel_type)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
mwifiex_is_alg_wep(u32 cipher)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 */
mwifiex_cfg80211_get_priv(struct wiphy * wiphy)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
mwifiex_cfg80211_del_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr)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
mwifiex_cfg80211_set_tx_power(struct wiphy * wiphy,enum nl80211_tx_power_setting type,int mbm)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
mwifiex_cfg80211_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)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
mwifiex_cfg80211_set_default_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool unicast,bool multicast)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
mwifiex_cfg80211_add_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr,struct key_params * params)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 */
mwifiex_send_domain_info_cmd_fw(struct wiphy * wiphy)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 */
mwifiex_reg_notifier(struct wiphy * wiphy,struct regulatory_request * request)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
mwifiex_set_rf_channel(struct mwifiex_private * priv,struct ieee80211_channel * chan,enum nl80211_channel_type channel_type)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
mwifiex_cfg80211_set_channel(struct wiphy * wiphy,struct net_device * dev,struct ieee80211_channel * chan,enum nl80211_channel_type channel_type)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
mwifiex_set_frag(struct mwifiex_private * priv,u32 frag_thr)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
mwifiex_set_rts(struct mwifiex_private * priv,u32 rts_thr)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
mwifiex_cfg80211_set_wiphy_params(struct wiphy * wiphy,u32 changed)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
mwifiex_cfg80211_change_virtual_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,u32 * flags,struct vif_params * params)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
mwifiex_dump_station_info(struct mwifiex_private * priv,struct station_info * sinfo)516 mwifiex_dump_station_info(struct mwifiex_private *priv,
517 struct station_info *sinfo)
518 {
519 struct mwifiex_ds_get_signal signal;
520 struct mwifiex_rate_cfg rate;
521 int ret = 0;
522
523 sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
524 STATION_INFO_RX_PACKETS |
525 STATION_INFO_TX_PACKETS
526 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
527
528 /* Get signal information from the firmware */
529 memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
530 if (mwifiex_get_signal_info(priv, &signal)) {
531 dev_err(priv->adapter->dev, "getting signal information\n");
532 ret = -EFAULT;
533 }
534
535 if (mwifiex_drv_get_data_rate(priv, &rate)) {
536 dev_err(priv->adapter->dev, "getting data rate\n");
537 ret = -EFAULT;
538 }
539
540 /* Get DTIM period information from firmware */
541 mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
542 HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
543 &priv->dtim_period);
544
545 /*
546 * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
547 * MCS index values for us are 0 to 15.
548 */
549 if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
550 sinfo->txrate.mcs = priv->tx_rate;
551 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
552 /* 40MHz rate */
553 if (priv->tx_htinfo & BIT(1))
554 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
555 /* SGI enabled */
556 if (priv->tx_htinfo & BIT(2))
557 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
558 }
559
560 sinfo->rx_bytes = priv->stats.rx_bytes;
561 sinfo->tx_bytes = priv->stats.tx_bytes;
562 sinfo->rx_packets = priv->stats.rx_packets;
563 sinfo->tx_packets = priv->stats.tx_packets;
564 sinfo->signal = priv->qual_level;
565 /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
566 sinfo->txrate.legacy = rate.rate * 5;
567
568 if (priv->bss_mode == NL80211_IFTYPE_STATION) {
569 sinfo->filled |= STATION_INFO_BSS_PARAM;
570 sinfo->bss_param.flags = 0;
571 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
572 WLAN_CAPABILITY_SHORT_PREAMBLE)
573 sinfo->bss_param.flags |=
574 BSS_PARAM_FLAGS_SHORT_PREAMBLE;
575 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
576 WLAN_CAPABILITY_SHORT_SLOT_TIME)
577 sinfo->bss_param.flags |=
578 BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
579 sinfo->bss_param.dtim_period = priv->dtim_period;
580 sinfo->bss_param.beacon_interval =
581 priv->curr_bss_params.bss_descriptor.beacon_period;
582 }
583
584 return ret;
585 }
586
587 /*
588 * CFG802.11 operation handler to get station information.
589 *
590 * This function only works in connected mode, and dumps the
591 * requested station information, if available.
592 */
593 static int
mwifiex_cfg80211_get_station(struct wiphy * wiphy,struct net_device * dev,u8 * mac,struct station_info * sinfo)594 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
595 u8 *mac, struct station_info *sinfo)
596 {
597 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
598
599 if (!priv->media_connected)
600 return -ENOENT;
601 if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
602 return -ENOENT;
603
604 return mwifiex_dump_station_info(priv, sinfo);
605 }
606
607 /* Supported rates to be advertised to the cfg80211 */
608
609 static struct ieee80211_rate mwifiex_rates[] = {
610 {.bitrate = 10, .hw_value = 2, },
611 {.bitrate = 20, .hw_value = 4, },
612 {.bitrate = 55, .hw_value = 11, },
613 {.bitrate = 110, .hw_value = 22, },
614 {.bitrate = 60, .hw_value = 12, },
615 {.bitrate = 90, .hw_value = 18, },
616 {.bitrate = 120, .hw_value = 24, },
617 {.bitrate = 180, .hw_value = 36, },
618 {.bitrate = 240, .hw_value = 48, },
619 {.bitrate = 360, .hw_value = 72, },
620 {.bitrate = 480, .hw_value = 96, },
621 {.bitrate = 540, .hw_value = 108, },
622 };
623
624 /* Channel definitions to be advertised to cfg80211 */
625
626 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
627 {.center_freq = 2412, .hw_value = 1, },
628 {.center_freq = 2417, .hw_value = 2, },
629 {.center_freq = 2422, .hw_value = 3, },
630 {.center_freq = 2427, .hw_value = 4, },
631 {.center_freq = 2432, .hw_value = 5, },
632 {.center_freq = 2437, .hw_value = 6, },
633 {.center_freq = 2442, .hw_value = 7, },
634 {.center_freq = 2447, .hw_value = 8, },
635 {.center_freq = 2452, .hw_value = 9, },
636 {.center_freq = 2457, .hw_value = 10, },
637 {.center_freq = 2462, .hw_value = 11, },
638 {.center_freq = 2467, .hw_value = 12, },
639 {.center_freq = 2472, .hw_value = 13, },
640 {.center_freq = 2484, .hw_value = 14, },
641 };
642
643 static struct ieee80211_supported_band mwifiex_band_2ghz = {
644 .channels = mwifiex_channels_2ghz,
645 .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
646 .bitrates = mwifiex_rates,
647 .n_bitrates = ARRAY_SIZE(mwifiex_rates),
648 };
649
650 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
651 {.center_freq = 5040, .hw_value = 8, },
652 {.center_freq = 5060, .hw_value = 12, },
653 {.center_freq = 5080, .hw_value = 16, },
654 {.center_freq = 5170, .hw_value = 34, },
655 {.center_freq = 5190, .hw_value = 38, },
656 {.center_freq = 5210, .hw_value = 42, },
657 {.center_freq = 5230, .hw_value = 46, },
658 {.center_freq = 5180, .hw_value = 36, },
659 {.center_freq = 5200, .hw_value = 40, },
660 {.center_freq = 5220, .hw_value = 44, },
661 {.center_freq = 5240, .hw_value = 48, },
662 {.center_freq = 5260, .hw_value = 52, },
663 {.center_freq = 5280, .hw_value = 56, },
664 {.center_freq = 5300, .hw_value = 60, },
665 {.center_freq = 5320, .hw_value = 64, },
666 {.center_freq = 5500, .hw_value = 100, },
667 {.center_freq = 5520, .hw_value = 104, },
668 {.center_freq = 5540, .hw_value = 108, },
669 {.center_freq = 5560, .hw_value = 112, },
670 {.center_freq = 5580, .hw_value = 116, },
671 {.center_freq = 5600, .hw_value = 120, },
672 {.center_freq = 5620, .hw_value = 124, },
673 {.center_freq = 5640, .hw_value = 128, },
674 {.center_freq = 5660, .hw_value = 132, },
675 {.center_freq = 5680, .hw_value = 136, },
676 {.center_freq = 5700, .hw_value = 140, },
677 {.center_freq = 5745, .hw_value = 149, },
678 {.center_freq = 5765, .hw_value = 153, },
679 {.center_freq = 5785, .hw_value = 157, },
680 {.center_freq = 5805, .hw_value = 161, },
681 {.center_freq = 5825, .hw_value = 165, },
682 };
683
684 static struct ieee80211_supported_band mwifiex_band_5ghz = {
685 .channels = mwifiex_channels_5ghz,
686 .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
687 .bitrates = mwifiex_rates + 4,
688 .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
689 };
690
691
692 /* Supported crypto cipher suits to be advertised to cfg80211 */
693
694 static const u32 mwifiex_cipher_suites[] = {
695 WLAN_CIPHER_SUITE_WEP40,
696 WLAN_CIPHER_SUITE_WEP104,
697 WLAN_CIPHER_SUITE_TKIP,
698 WLAN_CIPHER_SUITE_CCMP,
699 };
700
701 /*
702 * CFG802.11 operation handler for setting bit rates.
703 *
704 * Function selects legacy bang B/G/BG from corresponding bitrates selection.
705 * Currently only 2.4GHz band is supported.
706 */
mwifiex_cfg80211_set_bitrate_mask(struct wiphy * wiphy,struct net_device * dev,const u8 * peer,const struct cfg80211_bitrate_mask * mask)707 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
708 struct net_device *dev,
709 const u8 *peer,
710 const struct cfg80211_bitrate_mask *mask)
711 {
712 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
713 int index = 0, mode = 0, i;
714 struct mwifiex_adapter *adapter = priv->adapter;
715
716 /* Currently only 2.4GHz is supported */
717 for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
718 /*
719 * Rates below 6 Mbps in the table are CCK rates; 802.11b
720 * and from 6 they are OFDM; 802.11G
721 */
722 if (mwifiex_rates[i].bitrate == 60) {
723 index = 1 << i;
724 break;
725 }
726 }
727
728 if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
729 mode = BAND_B;
730 } else {
731 mode = BAND_G;
732 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
733 mode |= BAND_B;
734 }
735
736 if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
737 adapter->config_bands = mode;
738 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
739 adapter->adhoc_start_band = mode;
740 adapter->adhoc_11n_enabled = false;
741 }
742 }
743 adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
744 adapter->channel_type = NL80211_CHAN_NO_HT;
745
746 wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
747 (mode & BAND_B) ? "b" : "", (mode & BAND_G) ? "g" : "");
748
749 return 0;
750 }
751
752 /*
753 * CFG802.11 operation handler for disconnection request.
754 *
755 * This function does not work when there is already a disconnection
756 * procedure going on.
757 */
758 static int
mwifiex_cfg80211_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)759 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
760 u16 reason_code)
761 {
762 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
763
764 if (mwifiex_deauthenticate(priv, NULL))
765 return -EFAULT;
766
767 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
768 " reason code %d\n", priv->cfg_bssid, reason_code);
769
770 memset(priv->cfg_bssid, 0, ETH_ALEN);
771
772 return 0;
773 }
774
775 /*
776 * This function informs the CFG802.11 subsystem of a new IBSS.
777 *
778 * The following information are sent to the CFG802.11 subsystem
779 * to register the new IBSS. If we do not register the new IBSS,
780 * a kernel panic will result.
781 * - SSID
782 * - SSID length
783 * - BSSID
784 * - Channel
785 */
mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private * priv)786 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
787 {
788 struct ieee80211_channel *chan;
789 struct mwifiex_bss_info bss_info;
790 struct cfg80211_bss *bss;
791 int ie_len;
792 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
793 enum ieee80211_band band;
794
795 if (mwifiex_get_bss_info(priv, &bss_info))
796 return -1;
797
798 ie_buf[0] = WLAN_EID_SSID;
799 ie_buf[1] = bss_info.ssid.ssid_len;
800
801 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
802 &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
803 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
804
805 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
806 chan = __ieee80211_get_channel(priv->wdev->wiphy,
807 ieee80211_channel_to_frequency(bss_info.bss_chan,
808 band));
809
810 bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
811 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
812 0, ie_buf, ie_len, 0, GFP_KERNEL);
813 cfg80211_put_bss(bss);
814 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
815
816 return 0;
817 }
818
819 /*
820 * This function connects with a BSS.
821 *
822 * This function handles both Infra and Ad-Hoc modes. It also performs
823 * validity checking on the provided parameters, disconnects from the
824 * current BSS (if any), sets up the association/scan parameters,
825 * including security settings, and performs specific SSID scan before
826 * trying to connect.
827 *
828 * For Infra mode, the function returns failure if the specified SSID
829 * is not found in scan table. However, for Ad-Hoc mode, it can create
830 * the IBSS if it does not exist. On successful completion in either case,
831 * the function notifies the CFG802.11 subsystem of the new BSS connection.
832 */
833 static int
mwifiex_cfg80211_assoc(struct mwifiex_private * priv,size_t ssid_len,u8 * ssid,u8 * bssid,int mode,struct ieee80211_channel * channel,struct cfg80211_connect_params * sme,bool privacy)834 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
835 u8 *bssid, int mode, struct ieee80211_channel *channel,
836 struct cfg80211_connect_params *sme, bool privacy)
837 {
838 struct cfg80211_ssid req_ssid;
839 int ret, auth_type = 0;
840 struct cfg80211_bss *bss = NULL;
841 u8 is_scanning_required = 0;
842
843 memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
844
845 req_ssid.ssid_len = ssid_len;
846 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
847 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
848 return -EINVAL;
849 }
850
851 memcpy(req_ssid.ssid, ssid, ssid_len);
852 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
853 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
854 return -EINVAL;
855 }
856
857 /* disconnect before try to associate */
858 mwifiex_deauthenticate(priv, NULL);
859
860 if (channel)
861 ret = mwifiex_set_rf_channel(priv, channel,
862 priv->adapter->channel_type);
863
864 /* As this is new association, clear locally stored
865 * keys and security related flags */
866 priv->sec_info.wpa_enabled = false;
867 priv->sec_info.wpa2_enabled = false;
868 priv->wep_key_curr_index = 0;
869 priv->sec_info.encryption_mode = 0;
870 priv->sec_info.is_authtype_auto = 0;
871 ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
872
873 if (mode == NL80211_IFTYPE_ADHOC) {
874 /* "privacy" is set only for ad-hoc mode */
875 if (privacy) {
876 /*
877 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
878 * the firmware can find a matching network from the
879 * scan. The cfg80211 does not give us the encryption
880 * mode at this stage so just setting it to WEP here.
881 */
882 priv->sec_info.encryption_mode =
883 WLAN_CIPHER_SUITE_WEP104;
884 priv->sec_info.authentication_mode =
885 NL80211_AUTHTYPE_OPEN_SYSTEM;
886 }
887
888 goto done;
889 }
890
891 /* Now handle infra mode. "sme" is valid for infra mode only */
892 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
893 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
894 priv->sec_info.is_authtype_auto = 1;
895 } else {
896 auth_type = sme->auth_type;
897 }
898
899 if (sme->crypto.n_ciphers_pairwise) {
900 priv->sec_info.encryption_mode =
901 sme->crypto.ciphers_pairwise[0];
902 priv->sec_info.authentication_mode = auth_type;
903 }
904
905 if (sme->crypto.cipher_group) {
906 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
907 priv->sec_info.authentication_mode = auth_type;
908 }
909 if (sme->ie)
910 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
911
912 if (sme->key) {
913 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
914 dev_dbg(priv->adapter->dev,
915 "info: setting wep encryption"
916 " with key len %d\n", sme->key_len);
917 priv->wep_key_curr_index = sme->key_idx;
918 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
919 sme->key_idx, 0);
920 }
921 }
922 done:
923 /*
924 * Scan entries are valid for some time (15 sec). So we can save one
925 * active scan time if we just try cfg80211_get_bss first. If it fails
926 * then request scan and cfg80211_get_bss() again for final output.
927 */
928 while (1) {
929 if (is_scanning_required) {
930 /* Do specific SSID scanning */
931 if (mwifiex_request_scan(priv, &req_ssid)) {
932 dev_err(priv->adapter->dev, "scan error\n");
933 return -EFAULT;
934 }
935 }
936
937 /* Find the BSS we want using available scan results */
938 if (mode == NL80211_IFTYPE_ADHOC)
939 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
940 bssid, ssid, ssid_len,
941 WLAN_CAPABILITY_IBSS,
942 WLAN_CAPABILITY_IBSS);
943 else
944 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
945 bssid, ssid, ssid_len,
946 WLAN_CAPABILITY_ESS,
947 WLAN_CAPABILITY_ESS);
948
949 if (!bss) {
950 if (is_scanning_required) {
951 dev_warn(priv->adapter->dev,
952 "assoc: requested bss not found in scan results\n");
953 break;
954 }
955 is_scanning_required = 1;
956 } else {
957 dev_dbg(priv->adapter->dev,
958 "info: trying to associate to '%s' bssid %pM\n",
959 (char *) req_ssid.ssid, bss->bssid);
960 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
961 break;
962 }
963 }
964
965 if (mwifiex_bss_start(priv, bss, &req_ssid))
966 return -EFAULT;
967
968 if (mode == NL80211_IFTYPE_ADHOC) {
969 /* Inform the BSS information to kernel, otherwise
970 * kernel will give a panic after successful assoc */
971 if (mwifiex_cfg80211_inform_ibss_bss(priv))
972 return -EFAULT;
973 }
974
975 return ret;
976 }
977
978 /*
979 * CFG802.11 operation handler for association request.
980 *
981 * This function does not work when the current mode is set to Ad-Hoc, or
982 * when there is already an association procedure going on. The given BSS
983 * information is used to associate.
984 */
985 static int
mwifiex_cfg80211_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)986 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
987 struct cfg80211_connect_params *sme)
988 {
989 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
990 int ret = 0;
991
992 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
993 wiphy_err(wiphy, "received infra assoc request "
994 "when station is in ibss mode\n");
995 goto done;
996 }
997
998 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
999 (char *) sme->ssid, sme->bssid);
1000
1001 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1002 priv->bss_mode, sme->channel, sme, 0);
1003 done:
1004 if (!ret) {
1005 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1006 NULL, 0, WLAN_STATUS_SUCCESS,
1007 GFP_KERNEL);
1008 dev_dbg(priv->adapter->dev,
1009 "info: associated to bssid %pM successfully\n",
1010 priv->cfg_bssid);
1011 } else {
1012 dev_dbg(priv->adapter->dev,
1013 "info: association to bssid %pM failed\n",
1014 priv->cfg_bssid);
1015 memset(priv->cfg_bssid, 0, ETH_ALEN);
1016 }
1017
1018 return ret;
1019 }
1020
1021 /*
1022 * CFG802.11 operation handler to join an IBSS.
1023 *
1024 * This function does not work in any mode other than Ad-Hoc, or if
1025 * a join operation is already in progress.
1026 */
1027 static int
mwifiex_cfg80211_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)1028 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1029 struct cfg80211_ibss_params *params)
1030 {
1031 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1032 int ret = 0;
1033
1034 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1035 wiphy_err(wiphy, "request to join ibss received "
1036 "when station is not in ibss mode\n");
1037 goto done;
1038 }
1039
1040 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1041 (char *) params->ssid, params->bssid);
1042
1043 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1044 params->bssid, priv->bss_mode,
1045 params->channel, NULL, params->privacy);
1046 done:
1047 if (!ret) {
1048 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1049 dev_dbg(priv->adapter->dev,
1050 "info: joined/created adhoc network with bssid"
1051 " %pM successfully\n", priv->cfg_bssid);
1052 } else {
1053 dev_dbg(priv->adapter->dev,
1054 "info: failed creating/joining adhoc network\n");
1055 }
1056
1057 return ret;
1058 }
1059
1060 /*
1061 * CFG802.11 operation handler to leave an IBSS.
1062 *
1063 * This function does not work if a leave operation is
1064 * already in progress.
1065 */
1066 static int
mwifiex_cfg80211_leave_ibss(struct wiphy * wiphy,struct net_device * dev)1067 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1068 {
1069 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1070
1071 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1072 priv->cfg_bssid);
1073 if (mwifiex_deauthenticate(priv, NULL))
1074 return -EFAULT;
1075
1076 memset(priv->cfg_bssid, 0, ETH_ALEN);
1077
1078 return 0;
1079 }
1080
1081 /*
1082 * CFG802.11 operation handler for scan request.
1083 *
1084 * This function issues a scan request to the firmware based upon
1085 * the user specified scan configuration. On successfull completion,
1086 * it also informs the results.
1087 */
1088 static int
mwifiex_cfg80211_scan(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_scan_request * request)1089 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1090 struct cfg80211_scan_request *request)
1091 {
1092 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1093 int i;
1094 struct ieee80211_channel *chan;
1095
1096 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1097
1098 priv->scan_request = request;
1099
1100 priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1101 GFP_KERNEL);
1102 if (!priv->user_scan_cfg) {
1103 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1104 return -ENOMEM;
1105 }
1106
1107 priv->user_scan_cfg->num_ssids = request->n_ssids;
1108 priv->user_scan_cfg->ssid_list = request->ssids;
1109
1110 for (i = 0; i < request->n_channels; i++) {
1111 chan = request->channels[i];
1112 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1113 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1114
1115 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1116 priv->user_scan_cfg->chan_list[i].scan_type =
1117 MWIFIEX_SCAN_TYPE_PASSIVE;
1118 else
1119 priv->user_scan_cfg->chan_list[i].scan_type =
1120 MWIFIEX_SCAN_TYPE_ACTIVE;
1121
1122 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1123 }
1124 if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1125 return -EFAULT;
1126
1127 return 0;
1128 }
1129
1130 /*
1131 * This function sets up the CFG802.11 specific HT capability fields
1132 * with default values.
1133 *
1134 * The following default values are set -
1135 * - HT Supported = True
1136 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1137 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1138 * - HT Capabilities supported by firmware
1139 * - MCS information, Rx mask = 0xff
1140 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1141 */
1142 static void
mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap * ht_info,struct mwifiex_private * priv)1143 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1144 struct mwifiex_private *priv)
1145 {
1146 int rx_mcs_supp;
1147 struct ieee80211_mcs_info mcs_set;
1148 u8 *mcs = (u8 *)&mcs_set;
1149 struct mwifiex_adapter *adapter = priv->adapter;
1150
1151 ht_info->ht_supported = true;
1152 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1153 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1154
1155 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1156
1157 /* Fill HT capability information */
1158 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1159 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1160 else
1161 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1162
1163 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1164 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1165 else
1166 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1167
1168 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1169 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1170 else
1171 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1172
1173 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1174 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1175 else
1176 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1177
1178 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1179 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1180 else
1181 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1182
1183 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1184 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1185
1186 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1187 /* Set MCS for 1x1 */
1188 memset(mcs, 0xff, rx_mcs_supp);
1189 /* Clear all the other values */
1190 memset(&mcs[rx_mcs_supp], 0,
1191 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1192 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1193 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1194 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1195 SETHT_MCS32(mcs_set.rx_mask);
1196
1197 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1198
1199 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1200 }
1201
1202 /*
1203 * create a new virtual interface with the given name
1204 */
mwifiex_add_virtual_intf(struct wiphy * wiphy,char * name,enum nl80211_iftype type,u32 * flags,struct vif_params * params)1205 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1206 char *name,
1207 enum nl80211_iftype type,
1208 u32 *flags,
1209 struct vif_params *params)
1210 {
1211 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1212 struct mwifiex_adapter *adapter;
1213 struct net_device *dev;
1214 void *mdev_priv;
1215
1216 if (!priv)
1217 return ERR_PTR(-EFAULT);
1218
1219 adapter = priv->adapter;
1220 if (!adapter)
1221 return ERR_PTR(-EFAULT);
1222
1223 switch (type) {
1224 case NL80211_IFTYPE_UNSPECIFIED:
1225 case NL80211_IFTYPE_STATION:
1226 case NL80211_IFTYPE_ADHOC:
1227 if (priv->bss_mode) {
1228 wiphy_err(wiphy, "cannot create multiple"
1229 " station/adhoc interfaces\n");
1230 return ERR_PTR(-EINVAL);
1231 }
1232
1233 if (type == NL80211_IFTYPE_UNSPECIFIED)
1234 priv->bss_mode = NL80211_IFTYPE_STATION;
1235 else
1236 priv->bss_mode = type;
1237
1238 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1239 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1240 priv->bss_priority = 0;
1241 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1242 priv->bss_num = 0;
1243
1244 break;
1245 default:
1246 wiphy_err(wiphy, "type not supported\n");
1247 return ERR_PTR(-EINVAL);
1248 }
1249
1250 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1251 ether_setup, 1);
1252 if (!dev) {
1253 wiphy_err(wiphy, "no memory available for netdevice\n");
1254 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1255 return ERR_PTR(-ENOMEM);
1256 }
1257
1258 dev_net_set(dev, wiphy_net(wiphy));
1259 dev->ieee80211_ptr = priv->wdev;
1260 dev->ieee80211_ptr->iftype = priv->bss_mode;
1261 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1262 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1263 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1264
1265 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1266 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1267 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1268
1269 mdev_priv = netdev_priv(dev);
1270 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1271
1272 priv->netdev = dev;
1273 mwifiex_init_priv_params(priv, dev);
1274
1275 SET_NETDEV_DEV(dev, adapter->dev);
1276
1277 /* Register network device */
1278 if (register_netdevice(dev)) {
1279 wiphy_err(wiphy, "cannot register virtual network device\n");
1280 free_netdev(dev);
1281 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1282 return ERR_PTR(-EFAULT);
1283 }
1284
1285 sema_init(&priv->async_sem, 1);
1286 priv->scan_pending_on_block = false;
1287
1288 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1289
1290 #ifdef CONFIG_DEBUG_FS
1291 mwifiex_dev_debugfs_init(priv);
1292 #endif
1293 return dev;
1294 }
1295 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1296
1297 /*
1298 * del_virtual_intf: remove the virtual interface determined by dev
1299 */
mwifiex_del_virtual_intf(struct wiphy * wiphy,struct net_device * dev)1300 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1301 {
1302 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1303
1304 #ifdef CONFIG_DEBUG_FS
1305 mwifiex_dev_debugfs_remove(priv);
1306 #endif
1307
1308 if (!netif_queue_stopped(priv->netdev))
1309 netif_stop_queue(priv->netdev);
1310
1311 if (netif_carrier_ok(priv->netdev))
1312 netif_carrier_off(priv->netdev);
1313
1314 if (dev->reg_state == NETREG_REGISTERED)
1315 unregister_netdevice(dev);
1316
1317 if (dev->reg_state == NETREG_UNREGISTERED)
1318 free_netdev(dev);
1319
1320 /* Clear the priv in adapter */
1321 priv->netdev = NULL;
1322
1323 priv->media_connected = false;
1324
1325 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1326
1327 return 0;
1328 }
1329 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1330
1331 /* station cfg80211 operations */
1332 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1333 .add_virtual_intf = mwifiex_add_virtual_intf,
1334 .del_virtual_intf = mwifiex_del_virtual_intf,
1335 .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1336 .scan = mwifiex_cfg80211_scan,
1337 .connect = mwifiex_cfg80211_connect,
1338 .disconnect = mwifiex_cfg80211_disconnect,
1339 .get_station = mwifiex_cfg80211_get_station,
1340 .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1341 .set_channel = mwifiex_cfg80211_set_channel,
1342 .join_ibss = mwifiex_cfg80211_join_ibss,
1343 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1344 .add_key = mwifiex_cfg80211_add_key,
1345 .del_key = mwifiex_cfg80211_del_key,
1346 .set_default_key = mwifiex_cfg80211_set_default_key,
1347 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1348 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1349 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1350 };
1351
1352 /*
1353 * This function registers the device with CFG802.11 subsystem.
1354 *
1355 * The function creates the wireless device/wiphy, populates it with
1356 * default parameters and handler function pointers, and finally
1357 * registers the device.
1358 */
mwifiex_register_cfg80211(struct mwifiex_private * priv)1359 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1360 {
1361 int ret;
1362 void *wdev_priv;
1363 struct wireless_dev *wdev;
1364 struct ieee80211_sta_ht_cap *ht_info;
1365
1366 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1367 if (!wdev) {
1368 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1369 __func__);
1370 return -ENOMEM;
1371 }
1372 wdev->wiphy =
1373 wiphy_new(&mwifiex_cfg80211_ops,
1374 sizeof(struct mwifiex_private *));
1375 if (!wdev->wiphy) {
1376 kfree(wdev);
1377 return -ENOMEM;
1378 }
1379 wdev->iftype = NL80211_IFTYPE_STATION;
1380 wdev->wiphy->max_scan_ssids = 10;
1381 wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1382 BIT(NL80211_IFTYPE_ADHOC);
1383
1384 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1385 ht_info = &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap;
1386 mwifiex_setup_ht_caps(ht_info, priv);
1387
1388 if (priv->adapter->config_bands & BAND_A) {
1389 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1390 ht_info = &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap;
1391 mwifiex_setup_ht_caps(ht_info, priv);
1392 } else {
1393 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1394 }
1395
1396 /* Initialize cipher suits */
1397 wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1398 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1399
1400 memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1401 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1402
1403 /* Reserve space for bss band information */
1404 wdev->wiphy->bss_priv_size = sizeof(u8);
1405
1406 wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1407
1408 /* Set struct mwifiex_private pointer in wiphy_priv */
1409 wdev_priv = wiphy_priv(wdev->wiphy);
1410
1411 *(unsigned long *) wdev_priv = (unsigned long) priv;
1412
1413 set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1414
1415 ret = wiphy_register(wdev->wiphy);
1416 if (ret < 0) {
1417 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1418 __func__);
1419 wiphy_free(wdev->wiphy);
1420 kfree(wdev);
1421 return ret;
1422 } else {
1423 dev_dbg(priv->adapter->dev,
1424 "info: successfully registered wiphy device\n");
1425 }
1426
1427 priv->wdev = wdev;
1428
1429 return ret;
1430 }
1431