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e09f0c2e46ab19657b26f3ff7fa309d91e1e30d0
[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 static const struct ieee80211_iface_limit mwifiex_ap_sta_limits[] = {
24 {
25 .max = 1, .types = BIT(NL80211_IFTYPE_STATION),
26 },
27 {
28 .max = 1, .types = BIT(NL80211_IFTYPE_AP),
29 },
30 };
31
32 static const struct ieee80211_iface_combination mwifiex_iface_comb_ap_sta = {
33 .limits = mwifiex_ap_sta_limits,
34 .num_different_channels = 1,
35 .n_limits = ARRAY_SIZE(mwifiex_ap_sta_limits),
36 .max_interfaces = MWIFIEX_MAX_BSS_NUM,
37 .beacon_int_infra_match = true,
38 };
39
40 /*
41 * This function maps the nl802.11 channel type into driver channel type.
42 *
43 * The mapping is as follows -
44 * NL80211_CHAN_NO_HT -> IEEE80211_HT_PARAM_CHA_SEC_NONE
45 * NL80211_CHAN_HT20 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
46 * NL80211_CHAN_HT40PLUS -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
47 * NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
48 * Others -> IEEE80211_HT_PARAM_CHA_SEC_NONE
49 */
50 static u8
51 mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type
52 channel_type)
53 {
54 switch (channel_type) {
55 case NL80211_CHAN_NO_HT:
56 case NL80211_CHAN_HT20:
57 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
58 case NL80211_CHAN_HT40PLUS:
59 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
60 case NL80211_CHAN_HT40MINUS:
61 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
62 default:
63 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
64 }
65 }
66
67 /*
68 * This function checks whether WEP is set.
69 */
70 static int
71 mwifiex_is_alg_wep(u32 cipher)
72 {
73 switch (cipher) {
74 case WLAN_CIPHER_SUITE_WEP40:
75 case WLAN_CIPHER_SUITE_WEP104:
76 return 1;
77 default:
78 break;
79 }
80
81 return 0;
82 }
83
84 /*
85 * This function retrieves the private structure from kernel wiphy structure.
86 */
87 static void *mwifiex_cfg80211_get_adapter(struct wiphy *wiphy)
88 {
89 return (void *) (*(unsigned long *) wiphy_priv(wiphy));
90 }
91
92 /*
93 * CFG802.11 operation handler to delete a network key.
94 */
95 static int
96 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
97 u8 key_index, bool pairwise, const u8 *mac_addr)
98 {
99 struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
100 const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
101 const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
102
103 if (mwifiex_set_encode(priv, NULL, 0, key_index, peer_mac, 1)) {
104 wiphy_err(wiphy, "deleting the crypto keys\n");
105 return -EFAULT;
106 }
107
108 wiphy_dbg(wiphy, "info: crypto keys deleted\n");
109 return 0;
110 }
111
112 /*
113 * CFG802.11 operation handler to set Tx power.
114 */
115 static int
116 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
117 enum nl80211_tx_power_setting type,
118 int mbm)
119 {
120 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
121 struct mwifiex_private *priv;
122 struct mwifiex_power_cfg power_cfg;
123 int dbm = MBM_TO_DBM(mbm);
124
125 if (type == NL80211_TX_POWER_FIXED) {
126 power_cfg.is_power_auto = 0;
127 power_cfg.power_level = dbm;
128 } else {
129 power_cfg.is_power_auto = 1;
130 }
131
132 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
133
134 return mwifiex_set_tx_power(priv, &power_cfg);
135 }
136
137 /*
138 * CFG802.11 operation handler to set Power Save option.
139 *
140 * The timeout value, if provided, is currently ignored.
141 */
142 static int
143 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
144 struct net_device *dev,
145 bool enabled, int timeout)
146 {
147 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
148 u32 ps_mode;
149
150 if (timeout)
151 wiphy_dbg(wiphy,
152 "info: ignore timeout value for IEEE Power Save\n");
153
154 ps_mode = enabled;
155
156 return mwifiex_drv_set_power(priv, &ps_mode);
157 }
158
159 /*
160 * CFG802.11 operation handler to set the default network key.
161 */
162 static int
163 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
164 u8 key_index, bool unicast,
165 bool multicast)
166 {
167 struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
168
169 /* Return if WEP key not configured */
170 if (!priv->sec_info.wep_enabled)
171 return 0;
172
173 if (mwifiex_set_encode(priv, NULL, 0, key_index, NULL, 0)) {
174 wiphy_err(wiphy, "set default Tx key index\n");
175 return -EFAULT;
176 }
177
178 return 0;
179 }
180
181 /*
182 * CFG802.11 operation handler to add a network key.
183 */
184 static int
185 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
186 u8 key_index, bool pairwise, const u8 *mac_addr,
187 struct key_params *params)
188 {
189 struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
190 const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
191 const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
192
193 if (mwifiex_set_encode(priv, params->key, params->key_len,
194 key_index, peer_mac, 0)) {
195 wiphy_err(wiphy, "crypto keys added\n");
196 return -EFAULT;
197 }
198
199 return 0;
200 }
201
202 /*
203 * This function sends domain information to the firmware.
204 *
205 * The following information are passed to the firmware -
206 * - Country codes
207 * - Sub bands (first channel, number of channels, maximum Tx power)
208 */
209 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
210 {
211 u8 no_of_triplet = 0;
212 struct ieee80211_country_ie_triplet *t;
213 u8 no_of_parsed_chan = 0;
214 u8 first_chan = 0, next_chan = 0, max_pwr = 0;
215 u8 i, flag = 0;
216 enum ieee80211_band band;
217 struct ieee80211_supported_band *sband;
218 struct ieee80211_channel *ch;
219 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
220 struct mwifiex_private *priv;
221 struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
222
223 /* Set country code */
224 domain_info->country_code[0] = adapter->country_code[0];
225 domain_info->country_code[1] = adapter->country_code[1];
226 domain_info->country_code[2] = ' ';
227
228 band = mwifiex_band_to_radio_type(adapter->config_bands);
229 if (!wiphy->bands[band]) {
230 wiphy_err(wiphy, "11D: setting domain info in FW\n");
231 return -1;
232 }
233
234 sband = wiphy->bands[band];
235
236 for (i = 0; i < sband->n_channels ; i++) {
237 ch = &sband->channels[i];
238 if (ch->flags & IEEE80211_CHAN_DISABLED)
239 continue;
240
241 if (!flag) {
242 flag = 1;
243 first_chan = (u32) ch->hw_value;
244 next_chan = first_chan;
245 max_pwr = ch->max_power;
246 no_of_parsed_chan = 1;
247 continue;
248 }
249
250 if (ch->hw_value == next_chan + 1 &&
251 ch->max_power == max_pwr) {
252 next_chan++;
253 no_of_parsed_chan++;
254 } else {
255 t = &domain_info->triplet[no_of_triplet];
256 t->chans.first_channel = first_chan;
257 t->chans.num_channels = no_of_parsed_chan;
258 t->chans.max_power = max_pwr;
259 no_of_triplet++;
260 first_chan = (u32) ch->hw_value;
261 next_chan = first_chan;
262 max_pwr = ch->max_power;
263 no_of_parsed_chan = 1;
264 }
265 }
266
267 if (flag) {
268 t = &domain_info->triplet[no_of_triplet];
269 t->chans.first_channel = first_chan;
270 t->chans.num_channels = no_of_parsed_chan;
271 t->chans.max_power = max_pwr;
272 no_of_triplet++;
273 }
274
275 domain_info->no_of_triplet = no_of_triplet;
276
277 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
278
279 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
280 HostCmd_ACT_GEN_SET, 0, NULL)) {
281 wiphy_err(wiphy, "11D: setting domain info in FW\n");
282 return -1;
283 }
284
285 return 0;
286 }
287
288 /*
289 * CFG802.11 regulatory domain callback function.
290 *
291 * This function is called when the regulatory domain is changed due to the
292 * following reasons -
293 * - Set by driver
294 * - Set by system core
295 * - Set by user
296 * - Set bt Country IE
297 */
298 static int mwifiex_reg_notifier(struct wiphy *wiphy,
299 struct regulatory_request *request)
300 {
301 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
302
303 wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for %c%c\n",
304 request->alpha2[0], request->alpha2[1]);
305
306 memcpy(adapter->country_code, request->alpha2, sizeof(request->alpha2));
307
308 switch (request->initiator) {
309 case NL80211_REGDOM_SET_BY_DRIVER:
310 case NL80211_REGDOM_SET_BY_CORE:
311 case NL80211_REGDOM_SET_BY_USER:
312 break;
313 /* Todo: apply driver specific changes in channel flags based
314 on the request initiator if necessary. */
315 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
316 break;
317 }
318 mwifiex_send_domain_info_cmd_fw(wiphy);
319
320 return 0;
321 }
322
323 /*
324 * This function sets the RF channel.
325 *
326 * This function creates multiple IOCTL requests, populates them accordingly
327 * and issues them to set the band/channel and frequency.
328 */
329 static int
330 mwifiex_set_rf_channel(struct mwifiex_private *priv,
331 struct ieee80211_channel *chan,
332 enum nl80211_channel_type channel_type)
333 {
334 struct mwifiex_chan_freq_power cfp;
335 u32 config_bands = 0;
336 struct wiphy *wiphy = priv->wdev->wiphy;
337 struct mwifiex_adapter *adapter = priv->adapter;
338
339 if (chan) {
340 /* Set appropriate bands */
341 if (chan->band == IEEE80211_BAND_2GHZ) {
342 if (channel_type == NL80211_CHAN_NO_HT)
343 if (priv->adapter->config_bands == BAND_B ||
344 priv->adapter->config_bands == BAND_G)
345 config_bands =
346 priv->adapter->config_bands;
347 else
348 config_bands = BAND_B | BAND_G;
349 else
350 config_bands = BAND_B | BAND_G | BAND_GN;
351 } else {
352 if (channel_type == NL80211_CHAN_NO_HT)
353 config_bands = BAND_A;
354 else
355 config_bands = BAND_AN | BAND_A;
356 }
357
358 if (!((config_bands | adapter->fw_bands) &
359 ~adapter->fw_bands)) {
360 adapter->config_bands = config_bands;
361 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
362 adapter->adhoc_start_band = config_bands;
363 if ((config_bands & BAND_GN) ||
364 (config_bands & BAND_AN))
365 adapter->adhoc_11n_enabled = true;
366 else
367 adapter->adhoc_11n_enabled = false;
368 }
369 }
370 adapter->sec_chan_offset =
371 mwifiex_cfg80211_channel_type_to_sec_chan_offset
372 (channel_type);
373 adapter->channel_type = channel_type;
374
375 mwifiex_send_domain_info_cmd_fw(wiphy);
376 }
377
378 wiphy_dbg(wiphy, "info: setting band %d, chan offset %d, mode %d\n",
379 config_bands, adapter->sec_chan_offset, priv->bss_mode);
380 if (!chan)
381 return 0;
382
383 memset(&cfp, 0, sizeof(cfp));
384 cfp.freq = chan->center_freq;
385 cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
386
387 if (mwifiex_bss_set_channel(priv, &cfp))
388 return -EFAULT;
389
390 return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
391 }
392
393 /*
394 * CFG802.11 operation handler to set channel.
395 *
396 * This function can only be used when station is not connected.
397 */
398 static int
399 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
400 struct ieee80211_channel *chan,
401 enum nl80211_channel_type channel_type)
402 {
403 struct mwifiex_private *priv;
404 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
405
406 if (dev)
407 priv = mwifiex_netdev_get_priv(dev);
408 else
409 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
410
411 if (priv->media_connected) {
412 wiphy_err(wiphy, "This is invalid in connected state\n");
413 return -EINVAL;
414 }
415
416 return mwifiex_set_rf_channel(priv, chan, channel_type);
417 }
418
419 /*
420 * This function sets the fragmentation threshold.
421 *
422 * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
423 * and MWIFIEX_FRAG_MAX_VALUE.
424 */
425 static int
426 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
427 {
428 int ret;
429
430 if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
431 frag_thr > MWIFIEX_FRAG_MAX_VALUE)
432 return -EINVAL;
433
434 /* Send request to firmware */
435 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
436 HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
437 &frag_thr);
438
439 return ret;
440 }
441
442 /*
443 * This function sets the RTS threshold.
444
445 * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
446 * and MWIFIEX_RTS_MAX_VALUE.
447 */
448 static int
449 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
450 {
451 if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
452 rts_thr = MWIFIEX_RTS_MAX_VALUE;
453
454 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
455 HostCmd_ACT_GEN_SET, RTS_THRESH_I,
456 &rts_thr);
457 }
458
459 /*
460 * CFG802.11 operation handler to set wiphy parameters.
461 *
462 * This function can be used to set the RTS threshold and the
463 * Fragmentation threshold of the driver.
464 */
465 static int
466 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
467 {
468 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
469 struct mwifiex_private *priv = mwifiex_get_priv(adapter,
470 MWIFIEX_BSS_ROLE_STA);
471 int ret = 0;
472
473 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
474 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
475 if (ret)
476 return ret;
477 }
478
479 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
480 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
481
482 return ret;
483 }
484
485 /*
486 * CFG802.11 operation handler to change interface type.
487 */
488 static int
489 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
490 struct net_device *dev,
491 enum nl80211_iftype type, u32 *flags,
492 struct vif_params *params)
493 {
494 int ret;
495 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
496
497 if (priv->bss_mode == type) {
498 wiphy_warn(wiphy, "already set to required type\n");
499 return 0;
500 }
501
502 priv->bss_mode = type;
503
504 switch (type) {
505 case NL80211_IFTYPE_ADHOC:
506 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
507 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
508 break;
509 case NL80211_IFTYPE_STATION:
510 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
511 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
512 break;
513 case NL80211_IFTYPE_UNSPECIFIED:
514 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
515 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
516 return 0;
517 default:
518 wiphy_err(wiphy, "unknown interface type: %d\n", type);
519 return -EINVAL;
520 }
521
522 mwifiex_deauthenticate(priv, NULL);
523
524 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
525
526 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
527 HostCmd_ACT_GEN_SET, 0, NULL);
528
529 return ret;
530 }
531
532 /*
533 * This function dumps the station information on a buffer.
534 *
535 * The following information are shown -
536 * - Total bytes transmitted
537 * - Total bytes received
538 * - Total packets transmitted
539 * - Total packets received
540 * - Signal quality level
541 * - Transmission rate
542 */
543 static int
544 mwifiex_dump_station_info(struct mwifiex_private *priv,
545 struct station_info *sinfo)
546 {
547 struct mwifiex_rate_cfg rate;
548
549 sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
550 STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
551 STATION_INFO_TX_BITRATE |
552 STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
553
554 /* Get signal information from the firmware */
555 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
556 HostCmd_ACT_GEN_GET, 0, NULL)) {
557 dev_err(priv->adapter->dev, "failed to get signal information\n");
558 return -EFAULT;
559 }
560
561 if (mwifiex_drv_get_data_rate(priv, &rate)) {
562 dev_err(priv->adapter->dev, "getting data rate\n");
563 return -EFAULT;
564 }
565
566 /* Get DTIM period information from firmware */
567 mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
568 HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
569 &priv->dtim_period);
570
571 /*
572 * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
573 * MCS index values for us are 0 to 7.
574 */
575 if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
576 sinfo->txrate.mcs = priv->tx_rate;
577 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
578 /* 40MHz rate */
579 if (priv->tx_htinfo & BIT(1))
580 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
581 /* SGI enabled */
582 if (priv->tx_htinfo & BIT(2))
583 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
584 }
585
586 sinfo->signal_avg = priv->bcn_rssi_avg;
587 sinfo->rx_bytes = priv->stats.rx_bytes;
588 sinfo->tx_bytes = priv->stats.tx_bytes;
589 sinfo->rx_packets = priv->stats.rx_packets;
590 sinfo->tx_packets = priv->stats.tx_packets;
591 sinfo->signal = priv->bcn_rssi_avg;
592 /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
593 sinfo->txrate.legacy = rate.rate * 5;
594
595 if (priv->bss_mode == NL80211_IFTYPE_STATION) {
596 sinfo->filled |= STATION_INFO_BSS_PARAM;
597 sinfo->bss_param.flags = 0;
598 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
599 WLAN_CAPABILITY_SHORT_PREAMBLE)
600 sinfo->bss_param.flags |=
601 BSS_PARAM_FLAGS_SHORT_PREAMBLE;
602 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
603 WLAN_CAPABILITY_SHORT_SLOT_TIME)
604 sinfo->bss_param.flags |=
605 BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
606 sinfo->bss_param.dtim_period = priv->dtim_period;
607 sinfo->bss_param.beacon_interval =
608 priv->curr_bss_params.bss_descriptor.beacon_period;
609 }
610
611 return 0;
612 }
613
614 /*
615 * CFG802.11 operation handler to get station information.
616 *
617 * This function only works in connected mode, and dumps the
618 * requested station information, if available.
619 */
620 static int
621 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
622 u8 *mac, struct station_info *sinfo)
623 {
624 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
625
626 if (!priv->media_connected)
627 return -ENOENT;
628 if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
629 return -ENOENT;
630
631 return mwifiex_dump_station_info(priv, sinfo);
632 }
633
634 /*
635 * CFG802.11 operation handler to dump station information.
636 */
637 static int
638 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
639 int idx, u8 *mac, struct station_info *sinfo)
640 {
641 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
642
643 if (!priv->media_connected || idx)
644 return -ENOENT;
645
646 memcpy(mac, priv->cfg_bssid, ETH_ALEN);
647
648 return mwifiex_dump_station_info(priv, sinfo);
649 }
650
651 /* Supported rates to be advertised to the cfg80211 */
652
653 static struct ieee80211_rate mwifiex_rates[] = {
654 {.bitrate = 10, .hw_value = 2, },
655 {.bitrate = 20, .hw_value = 4, },
656 {.bitrate = 55, .hw_value = 11, },
657 {.bitrate = 110, .hw_value = 22, },
658 {.bitrate = 60, .hw_value = 12, },
659 {.bitrate = 90, .hw_value = 18, },
660 {.bitrate = 120, .hw_value = 24, },
661 {.bitrate = 180, .hw_value = 36, },
662 {.bitrate = 240, .hw_value = 48, },
663 {.bitrate = 360, .hw_value = 72, },
664 {.bitrate = 480, .hw_value = 96, },
665 {.bitrate = 540, .hw_value = 108, },
666 };
667
668 /* Channel definitions to be advertised to cfg80211 */
669
670 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
671 {.center_freq = 2412, .hw_value = 1, },
672 {.center_freq = 2417, .hw_value = 2, },
673 {.center_freq = 2422, .hw_value = 3, },
674 {.center_freq = 2427, .hw_value = 4, },
675 {.center_freq = 2432, .hw_value = 5, },
676 {.center_freq = 2437, .hw_value = 6, },
677 {.center_freq = 2442, .hw_value = 7, },
678 {.center_freq = 2447, .hw_value = 8, },
679 {.center_freq = 2452, .hw_value = 9, },
680 {.center_freq = 2457, .hw_value = 10, },
681 {.center_freq = 2462, .hw_value = 11, },
682 {.center_freq = 2467, .hw_value = 12, },
683 {.center_freq = 2472, .hw_value = 13, },
684 {.center_freq = 2484, .hw_value = 14, },
685 };
686
687 static struct ieee80211_supported_band mwifiex_band_2ghz = {
688 .channels = mwifiex_channels_2ghz,
689 .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
690 .bitrates = mwifiex_rates,
691 .n_bitrates = ARRAY_SIZE(mwifiex_rates),
692 };
693
694 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
695 {.center_freq = 5040, .hw_value = 8, },
696 {.center_freq = 5060, .hw_value = 12, },
697 {.center_freq = 5080, .hw_value = 16, },
698 {.center_freq = 5170, .hw_value = 34, },
699 {.center_freq = 5190, .hw_value = 38, },
700 {.center_freq = 5210, .hw_value = 42, },
701 {.center_freq = 5230, .hw_value = 46, },
702 {.center_freq = 5180, .hw_value = 36, },
703 {.center_freq = 5200, .hw_value = 40, },
704 {.center_freq = 5220, .hw_value = 44, },
705 {.center_freq = 5240, .hw_value = 48, },
706 {.center_freq = 5260, .hw_value = 52, },
707 {.center_freq = 5280, .hw_value = 56, },
708 {.center_freq = 5300, .hw_value = 60, },
709 {.center_freq = 5320, .hw_value = 64, },
710 {.center_freq = 5500, .hw_value = 100, },
711 {.center_freq = 5520, .hw_value = 104, },
712 {.center_freq = 5540, .hw_value = 108, },
713 {.center_freq = 5560, .hw_value = 112, },
714 {.center_freq = 5580, .hw_value = 116, },
715 {.center_freq = 5600, .hw_value = 120, },
716 {.center_freq = 5620, .hw_value = 124, },
717 {.center_freq = 5640, .hw_value = 128, },
718 {.center_freq = 5660, .hw_value = 132, },
719 {.center_freq = 5680, .hw_value = 136, },
720 {.center_freq = 5700, .hw_value = 140, },
721 {.center_freq = 5745, .hw_value = 149, },
722 {.center_freq = 5765, .hw_value = 153, },
723 {.center_freq = 5785, .hw_value = 157, },
724 {.center_freq = 5805, .hw_value = 161, },
725 {.center_freq = 5825, .hw_value = 165, },
726 };
727
728 static struct ieee80211_supported_band mwifiex_band_5ghz = {
729 .channels = mwifiex_channels_5ghz,
730 .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
731 .bitrates = mwifiex_rates + 4,
732 .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
733 };
734
735
736 /* Supported crypto cipher suits to be advertised to cfg80211 */
737
738 static const u32 mwifiex_cipher_suites[] = {
739 WLAN_CIPHER_SUITE_WEP40,
740 WLAN_CIPHER_SUITE_WEP104,
741 WLAN_CIPHER_SUITE_TKIP,
742 WLAN_CIPHER_SUITE_CCMP,
743 };
744
745 /*
746 * CFG802.11 operation handler for setting bit rates.
747 *
748 * Function selects legacy bang B/G/BG from corresponding bitrates selection.
749 * Currently only 2.4GHz band is supported.
750 */
751 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
752 struct net_device *dev,
753 const u8 *peer,
754 const struct cfg80211_bitrate_mask *mask)
755 {
756 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
757 int index = 0, mode = 0, i;
758 struct mwifiex_adapter *adapter = priv->adapter;
759
760 /* Currently only 2.4GHz is supported */
761 for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
762 /*
763 * Rates below 6 Mbps in the table are CCK rates; 802.11b
764 * and from 6 they are OFDM; 802.11G
765 */
766 if (mwifiex_rates[i].bitrate == 60) {
767 index = 1 << i;
768 break;
769 }
770 }
771
772 if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
773 mode = BAND_B;
774 } else {
775 mode = BAND_G;
776 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
777 mode |= BAND_B;
778 }
779
780 if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
781 adapter->config_bands = mode;
782 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
783 adapter->adhoc_start_band = mode;
784 adapter->adhoc_11n_enabled = false;
785 }
786 }
787 adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
788 adapter->channel_type = NL80211_CHAN_NO_HT;
789
790 wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
791 (mode & BAND_B) ? "b" : "", (mode & BAND_G) ? "g" : "");
792
793 return 0;
794 }
795
796 /*
797 * CFG802.11 operation handler for connection quality monitoring.
798 *
799 * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
800 * events to FW.
801 */
802 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
803 struct net_device *dev,
804 s32 rssi_thold, u32 rssi_hyst)
805 {
806 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
807 struct mwifiex_ds_misc_subsc_evt subsc_evt;
808
809 priv->cqm_rssi_thold = rssi_thold;
810 priv->cqm_rssi_hyst = rssi_hyst;
811
812 memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
813 subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
814
815 /* Subscribe/unsubscribe low and high rssi events */
816 if (rssi_thold && rssi_hyst) {
817 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
818 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
819 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
820 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
821 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
822 return mwifiex_send_cmd_sync(priv,
823 HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
824 0, 0, &subsc_evt);
825 } else {
826 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
827 return mwifiex_send_cmd_sync(priv,
828 HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
829 0, 0, &subsc_evt);
830 }
831
832 return 0;
833 }
834
835 /*
836 * CFG802.11 operation handler for disconnection request.
837 *
838 * This function does not work when there is already a disconnection
839 * procedure going on.
840 */
841 static int
842 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
843 u16 reason_code)
844 {
845 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
846
847 if (mwifiex_deauthenticate(priv, NULL))
848 return -EFAULT;
849
850 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
851 " reason code %d\n", priv->cfg_bssid, reason_code);
852
853 memset(priv->cfg_bssid, 0, ETH_ALEN);
854
855 return 0;
856 }
857
858 /*
859 * This function informs the CFG802.11 subsystem of a new IBSS.
860 *
861 * The following information are sent to the CFG802.11 subsystem
862 * to register the new IBSS. If we do not register the new IBSS,
863 * a kernel panic will result.
864 * - SSID
865 * - SSID length
866 * - BSSID
867 * - Channel
868 */
869 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
870 {
871 struct ieee80211_channel *chan;
872 struct mwifiex_bss_info bss_info;
873 struct cfg80211_bss *bss;
874 int ie_len;
875 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
876 enum ieee80211_band band;
877
878 if (mwifiex_get_bss_info(priv, &bss_info))
879 return -1;
880
881 ie_buf[0] = WLAN_EID_SSID;
882 ie_buf[1] = bss_info.ssid.ssid_len;
883
884 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
885 &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
886 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
887
888 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
889 chan = __ieee80211_get_channel(priv->wdev->wiphy,
890 ieee80211_channel_to_frequency(bss_info.bss_chan,
891 band));
892
893 bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
894 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
895 0, ie_buf, ie_len, 0, GFP_KERNEL);
896 cfg80211_put_bss(bss);
897 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
898
899 return 0;
900 }
901
902 /*
903 * This function connects with a BSS.
904 *
905 * This function handles both Infra and Ad-Hoc modes. It also performs
906 * validity checking on the provided parameters, disconnects from the
907 * current BSS (if any), sets up the association/scan parameters,
908 * including security settings, and performs specific SSID scan before
909 * trying to connect.
910 *
911 * For Infra mode, the function returns failure if the specified SSID
912 * is not found in scan table. However, for Ad-Hoc mode, it can create
913 * the IBSS if it does not exist. On successful completion in either case,
914 * the function notifies the CFG802.11 subsystem of the new BSS connection.
915 */
916 static int
917 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
918 u8 *bssid, int mode, struct ieee80211_channel *channel,
919 struct cfg80211_connect_params *sme, bool privacy)
920 {
921 struct cfg80211_ssid req_ssid;
922 int ret, auth_type = 0;
923 struct cfg80211_bss *bss = NULL;
924 u8 is_scanning_required = 0;
925
926 memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
927
928 req_ssid.ssid_len = ssid_len;
929 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
930 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
931 return -EINVAL;
932 }
933
934 memcpy(req_ssid.ssid, ssid, ssid_len);
935 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
936 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
937 return -EINVAL;
938 }
939
940 /* disconnect before try to associate */
941 mwifiex_deauthenticate(priv, NULL);
942
943 if (channel)
944 ret = mwifiex_set_rf_channel(priv, channel,
945 priv->adapter->channel_type);
946
947 /* As this is new association, clear locally stored
948 * keys and security related flags */
949 priv->sec_info.wpa_enabled = false;
950 priv->sec_info.wpa2_enabled = false;
951 priv->wep_key_curr_index = 0;
952 priv->sec_info.encryption_mode = 0;
953 priv->sec_info.is_authtype_auto = 0;
954 ret = mwifiex_set_encode(priv, NULL, 0, 0, NULL, 1);
955
956 if (mode == NL80211_IFTYPE_ADHOC) {
957 /* "privacy" is set only for ad-hoc mode */
958 if (privacy) {
959 /*
960 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
961 * the firmware can find a matching network from the
962 * scan. The cfg80211 does not give us the encryption
963 * mode at this stage so just setting it to WEP here.
964 */
965 priv->sec_info.encryption_mode =
966 WLAN_CIPHER_SUITE_WEP104;
967 priv->sec_info.authentication_mode =
968 NL80211_AUTHTYPE_OPEN_SYSTEM;
969 }
970
971 goto done;
972 }
973
974 /* Now handle infra mode. "sme" is valid for infra mode only */
975 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
976 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
977 priv->sec_info.is_authtype_auto = 1;
978 } else {
979 auth_type = sme->auth_type;
980 }
981
982 if (sme->crypto.n_ciphers_pairwise) {
983 priv->sec_info.encryption_mode =
984 sme->crypto.ciphers_pairwise[0];
985 priv->sec_info.authentication_mode = auth_type;
986 }
987
988 if (sme->crypto.cipher_group) {
989 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
990 priv->sec_info.authentication_mode = auth_type;
991 }
992 if (sme->ie)
993 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
994
995 if (sme->key) {
996 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
997 dev_dbg(priv->adapter->dev,
998 "info: setting wep encryption"
999 " with key len %d\n", sme->key_len);
1000 priv->wep_key_curr_index = sme->key_idx;
1001 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1002 sme->key_idx, NULL, 0);
1003 }
1004 }
1005 done:
1006 /*
1007 * Scan entries are valid for some time (15 sec). So we can save one
1008 * active scan time if we just try cfg80211_get_bss first. If it fails
1009 * then request scan and cfg80211_get_bss() again for final output.
1010 */
1011 while (1) {
1012 if (is_scanning_required) {
1013 /* Do specific SSID scanning */
1014 if (mwifiex_request_scan(priv, &req_ssid)) {
1015 dev_err(priv->adapter->dev, "scan error\n");
1016 return -EFAULT;
1017 }
1018 }
1019
1020 /* Find the BSS we want using available scan results */
1021 if (mode == NL80211_IFTYPE_ADHOC)
1022 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1023 bssid, ssid, ssid_len,
1024 WLAN_CAPABILITY_IBSS,
1025 WLAN_CAPABILITY_IBSS);
1026 else
1027 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1028 bssid, ssid, ssid_len,
1029 WLAN_CAPABILITY_ESS,
1030 WLAN_CAPABILITY_ESS);
1031
1032 if (!bss) {
1033 if (is_scanning_required) {
1034 dev_warn(priv->adapter->dev,
1035 "assoc: requested bss not found in scan results\n");
1036 break;
1037 }
1038 is_scanning_required = 1;
1039 } else {
1040 dev_dbg(priv->adapter->dev,
1041 "info: trying to associate to '%s' bssid %pM\n",
1042 (char *) req_ssid.ssid, bss->bssid);
1043 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1044 break;
1045 }
1046 }
1047
1048 if (mwifiex_bss_start(priv, bss, &req_ssid))
1049 return -EFAULT;
1050
1051 if (mode == NL80211_IFTYPE_ADHOC) {
1052 /* Inform the BSS information to kernel, otherwise
1053 * kernel will give a panic after successful assoc */
1054 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1055 return -EFAULT;
1056 }
1057
1058 return ret;
1059 }
1060
1061 /*
1062 * CFG802.11 operation handler for association request.
1063 *
1064 * This function does not work when the current mode is set to Ad-Hoc, or
1065 * when there is already an association procedure going on. The given BSS
1066 * information is used to associate.
1067 */
1068 static int
1069 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1070 struct cfg80211_connect_params *sme)
1071 {
1072 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1073 int ret = 0;
1074
1075 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1076 wiphy_err(wiphy, "received infra assoc request "
1077 "when station is in ibss mode\n");
1078 goto done;
1079 }
1080
1081 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1082 (char *) sme->ssid, sme->bssid);
1083
1084 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1085 priv->bss_mode, sme->channel, sme, 0);
1086 done:
1087 if (!ret) {
1088 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1089 NULL, 0, WLAN_STATUS_SUCCESS,
1090 GFP_KERNEL);
1091 dev_dbg(priv->adapter->dev,
1092 "info: associated to bssid %pM successfully\n",
1093 priv->cfg_bssid);
1094 } else {
1095 dev_dbg(priv->adapter->dev,
1096 "info: association to bssid %pM failed\n",
1097 priv->cfg_bssid);
1098 memset(priv->cfg_bssid, 0, ETH_ALEN);
1099 }
1100
1101 return ret;
1102 }
1103
1104 /*
1105 * CFG802.11 operation handler to join an IBSS.
1106 *
1107 * This function does not work in any mode other than Ad-Hoc, or if
1108 * a join operation is already in progress.
1109 */
1110 static int
1111 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1112 struct cfg80211_ibss_params *params)
1113 {
1114 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1115 int ret = 0;
1116
1117 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1118 wiphy_err(wiphy, "request to join ibss received "
1119 "when station is not in ibss mode\n");
1120 goto done;
1121 }
1122
1123 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1124 (char *) params->ssid, params->bssid);
1125
1126 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1127 params->bssid, priv->bss_mode,
1128 params->channel, NULL, params->privacy);
1129 done:
1130 if (!ret) {
1131 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1132 dev_dbg(priv->adapter->dev,
1133 "info: joined/created adhoc network with bssid"
1134 " %pM successfully\n", priv->cfg_bssid);
1135 } else {
1136 dev_dbg(priv->adapter->dev,
1137 "info: failed creating/joining adhoc network\n");
1138 }
1139
1140 return ret;
1141 }
1142
1143 /*
1144 * CFG802.11 operation handler to leave an IBSS.
1145 *
1146 * This function does not work if a leave operation is
1147 * already in progress.
1148 */
1149 static int
1150 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1151 {
1152 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1153
1154 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1155 priv->cfg_bssid);
1156 if (mwifiex_deauthenticate(priv, NULL))
1157 return -EFAULT;
1158
1159 memset(priv->cfg_bssid, 0, ETH_ALEN);
1160
1161 return 0;
1162 }
1163
1164 /*
1165 * CFG802.11 operation handler for scan request.
1166 *
1167 * This function issues a scan request to the firmware based upon
1168 * the user specified scan configuration. On successfull completion,
1169 * it also informs the results.
1170 */
1171 static int
1172 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1173 struct cfg80211_scan_request *request)
1174 {
1175 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1176 int i;
1177 struct ieee80211_channel *chan;
1178
1179 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1180
1181 priv->scan_request = request;
1182
1183 priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1184 GFP_KERNEL);
1185 if (!priv->user_scan_cfg) {
1186 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1187 return -ENOMEM;
1188 }
1189
1190 priv->user_scan_cfg->num_ssids = request->n_ssids;
1191 priv->user_scan_cfg->ssid_list = request->ssids;
1192
1193 if (request->ie && request->ie_len) {
1194 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1195 if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1196 continue;
1197 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1198 memcpy(&priv->vs_ie[i].ie, request->ie,
1199 request->ie_len);
1200 break;
1201 }
1202 }
1203
1204 for (i = 0; i < request->n_channels; i++) {
1205 chan = request->channels[i];
1206 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1207 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1208
1209 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1210 priv->user_scan_cfg->chan_list[i].scan_type =
1211 MWIFIEX_SCAN_TYPE_PASSIVE;
1212 else
1213 priv->user_scan_cfg->chan_list[i].scan_type =
1214 MWIFIEX_SCAN_TYPE_ACTIVE;
1215
1216 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1217 }
1218 if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1219 return -EFAULT;
1220
1221 if (request->ie && request->ie_len) {
1222 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1223 if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1224 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1225 memset(&priv->vs_ie[i].ie, 0,
1226 MWIFIEX_MAX_VSIE_LEN);
1227 }
1228 }
1229 }
1230 return 0;
1231 }
1232
1233 /*
1234 * This function sets up the CFG802.11 specific HT capability fields
1235 * with default values.
1236 *
1237 * The following default values are set -
1238 * - HT Supported = True
1239 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1240 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1241 * - HT Capabilities supported by firmware
1242 * - MCS information, Rx mask = 0xff
1243 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1244 */
1245 static void
1246 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1247 struct mwifiex_private *priv)
1248 {
1249 int rx_mcs_supp;
1250 struct ieee80211_mcs_info mcs_set;
1251 u8 *mcs = (u8 *)&mcs_set;
1252 struct mwifiex_adapter *adapter = priv->adapter;
1253
1254 ht_info->ht_supported = true;
1255 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1256 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1257
1258 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1259
1260 /* Fill HT capability information */
1261 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1262 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1263 else
1264 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1265
1266 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1267 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1268 else
1269 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1270
1271 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1272 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1273 else
1274 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1275
1276 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1277 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1278 else
1279 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1280
1281 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1282 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1283 else
1284 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1285
1286 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1287 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1288
1289 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1290 /* Set MCS for 1x1 */
1291 memset(mcs, 0xff, rx_mcs_supp);
1292 /* Clear all the other values */
1293 memset(&mcs[rx_mcs_supp], 0,
1294 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1295 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1296 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1297 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1298 SETHT_MCS32(mcs_set.rx_mask);
1299
1300 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1301
1302 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1303 }
1304
1305 /*
1306 * create a new virtual interface with the given name
1307 */
1308 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1309 char *name,
1310 enum nl80211_iftype type,
1311 u32 *flags,
1312 struct vif_params *params)
1313 {
1314 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1315 struct mwifiex_private *priv;
1316 struct net_device *dev;
1317 void *mdev_priv;
1318 struct wireless_dev *wdev;
1319
1320 if (!adapter)
1321 return NULL;
1322
1323 switch (type) {
1324 case NL80211_IFTYPE_UNSPECIFIED:
1325 case NL80211_IFTYPE_STATION:
1326 case NL80211_IFTYPE_ADHOC:
1327 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1328 if (priv->bss_mode) {
1329 wiphy_err(wiphy,
1330 "cannot create multiple sta/adhoc ifaces\n");
1331 return NULL;
1332 }
1333
1334 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1335 if (!wdev)
1336 return NULL;
1337
1338 wdev->wiphy = wiphy;
1339 priv->wdev = wdev;
1340 wdev->iftype = NL80211_IFTYPE_STATION;
1341
1342 if (type == NL80211_IFTYPE_UNSPECIFIED)
1343 priv->bss_mode = NL80211_IFTYPE_STATION;
1344 else
1345 priv->bss_mode = type;
1346
1347 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1348 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1349 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
1350 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1351 priv->bss_num = 0;
1352
1353 break;
1354 case NL80211_IFTYPE_AP:
1355 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
1356
1357 if (priv->bss_mode) {
1358 wiphy_err(wiphy, "Can't create multiple AP interfaces");
1359 return NULL;
1360 }
1361
1362 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1363 if (!wdev)
1364 return NULL;
1365
1366 priv->wdev = wdev;
1367 wdev->wiphy = wiphy;
1368 wdev->iftype = NL80211_IFTYPE_AP;
1369
1370 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
1371 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1372 priv->bss_priority = MWIFIEX_BSS_ROLE_UAP;
1373 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
1374 priv->bss_started = 0;
1375 priv->bss_num = 0;
1376 priv->bss_mode = type;
1377
1378 break;
1379 default:
1380 wiphy_err(wiphy, "type not supported\n");
1381 return NULL;
1382 }
1383
1384 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1385 ether_setup, 1);
1386 if (!dev) {
1387 wiphy_err(wiphy, "no memory available for netdevice\n");
1388 goto error;
1389 }
1390
1391 mwifiex_init_priv_params(priv, dev);
1392 priv->netdev = dev;
1393
1394 mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1395
1396 if (adapter->config_bands & BAND_A)
1397 mwifiex_setup_ht_caps(
1398 &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1399
1400 dev_net_set(dev, wiphy_net(wiphy));
1401 dev->ieee80211_ptr = priv->wdev;
1402 dev->ieee80211_ptr->iftype = priv->bss_mode;
1403 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1404 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1405 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1406
1407 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1408 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1409 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1410
1411 mdev_priv = netdev_priv(dev);
1412 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1413
1414 SET_NETDEV_DEV(dev, adapter->dev);
1415
1416 /* Register network device */
1417 if (register_netdevice(dev)) {
1418 wiphy_err(wiphy, "cannot register virtual network device\n");
1419 goto error;
1420 }
1421
1422 sema_init(&priv->async_sem, 1);
1423 priv->scan_pending_on_block = false;
1424
1425 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1426
1427 #ifdef CONFIG_DEBUG_FS
1428 mwifiex_dev_debugfs_init(priv);
1429 #endif
1430 return dev;
1431 error:
1432 if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1433 free_netdev(dev);
1434 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1435
1436 return NULL;
1437 }
1438 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1439
1440 /*
1441 * del_virtual_intf: remove the virtual interface determined by dev
1442 */
1443 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1444 {
1445 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1446
1447 #ifdef CONFIG_DEBUG_FS
1448 mwifiex_dev_debugfs_remove(priv);
1449 #endif
1450
1451 if (!netif_queue_stopped(priv->netdev))
1452 netif_stop_queue(priv->netdev);
1453
1454 if (netif_carrier_ok(priv->netdev))
1455 netif_carrier_off(priv->netdev);
1456
1457 if (dev->reg_state == NETREG_REGISTERED)
1458 unregister_netdevice(dev);
1459
1460 if (dev->reg_state == NETREG_UNREGISTERED)
1461 free_netdev(dev);
1462
1463 /* Clear the priv in adapter */
1464 priv->netdev = NULL;
1465
1466 priv->media_connected = false;
1467
1468 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1469
1470 return 0;
1471 }
1472 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1473
1474 /* station cfg80211 operations */
1475 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1476 .add_virtual_intf = mwifiex_add_virtual_intf,
1477 .del_virtual_intf = mwifiex_del_virtual_intf,
1478 .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1479 .scan = mwifiex_cfg80211_scan,
1480 .connect = mwifiex_cfg80211_connect,
1481 .disconnect = mwifiex_cfg80211_disconnect,
1482 .get_station = mwifiex_cfg80211_get_station,
1483 .dump_station = mwifiex_cfg80211_dump_station,
1484 .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1485 .set_channel = mwifiex_cfg80211_set_channel,
1486 .join_ibss = mwifiex_cfg80211_join_ibss,
1487 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1488 .add_key = mwifiex_cfg80211_add_key,
1489 .del_key = mwifiex_cfg80211_del_key,
1490 .set_default_key = mwifiex_cfg80211_set_default_key,
1491 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1492 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1493 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1494 .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1495 };
1496
1497 /*
1498 * This function registers the device with CFG802.11 subsystem.
1499 *
1500 * The function creates the wireless device/wiphy, populates it with
1501 * default parameters and handler function pointers, and finally
1502 * registers the device.
1503 */
1504
1505 int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
1506 {
1507 int ret;
1508 void *wdev_priv;
1509 struct wiphy *wiphy;
1510 struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1511 u8 *country_code;
1512
1513 /* create a new wiphy for use with cfg80211 */
1514 wiphy = wiphy_new(&mwifiex_cfg80211_ops,
1515 sizeof(struct mwifiex_adapter *));
1516 if (!wiphy) {
1517 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
1518 return -ENOMEM;
1519 }
1520 wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
1521 wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1522 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1523 BIT(NL80211_IFTYPE_ADHOC) |
1524 BIT(NL80211_IFTYPE_AP);
1525
1526 wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1527 if (adapter->config_bands & BAND_A)
1528 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1529 else
1530 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1531
1532 wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
1533 wiphy->n_iface_combinations = 1;
1534
1535 /* Initialize cipher suits */
1536 wiphy->cipher_suites = mwifiex_cipher_suites;
1537 wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1538
1539 memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1540 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1541 wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME | WIPHY_FLAG_CUSTOM_REGULATORY;
1542
1543 /* Reserve space for mwifiex specific private data for BSS */
1544 wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1545
1546 wiphy->reg_notifier = mwifiex_reg_notifier;
1547
1548 /* Set struct mwifiex_adapter pointer in wiphy_priv */
1549 wdev_priv = wiphy_priv(wiphy);
1550 *(unsigned long *)wdev_priv = (unsigned long)adapter;
1551
1552 set_wiphy_dev(wiphy, (struct device *)priv->adapter->dev);
1553
1554 ret = wiphy_register(wiphy);
1555 if (ret < 0) {
1556 dev_err(adapter->dev,
1557 "%s: wiphy_register failed: %d\n", __func__, ret);
1558 wiphy_free(wiphy);
1559 return ret;
1560 }
1561 country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1562 if (country_code && regulatory_hint(wiphy, country_code))
1563 dev_err(adapter->dev, "regulatory_hint() failed\n");
1564
1565 adapter->wiphy = wiphy;
1566 return ret;
1567 }
Linux kernel - Deliverables
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