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Merge branch 'for-chris' of git://git.jan-o-sch.net/btrfs-unstable into integration
[deliverable/linux.git] / drivers / net / wireless / mwifiex / cfg80211.c
1 /*
2 * Marvell Wireless LAN device driver: CFG80211
3 *
4 * Copyright (C) 2011, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include "cfg80211.h"
21 #include "main.h"
22
23 /*
24 * This function maps the nl802.11 channel type into driver channel type.
25 *
26 * The mapping is as follows -
27 * NL80211_CHAN_NO_HT -> NO_SEC_CHANNEL
28 * NL80211_CHAN_HT20 -> NO_SEC_CHANNEL
29 * NL80211_CHAN_HT40PLUS -> SEC_CHANNEL_ABOVE
30 * NL80211_CHAN_HT40MINUS -> SEC_CHANNEL_BELOW
31 * Others -> NO_SEC_CHANNEL
32 */
33 static int
34 mwifiex_cfg80211_channel_type_to_mwifiex_channels(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 NO_SEC_CHANNEL;
41 case NL80211_CHAN_HT40PLUS:
42 return SEC_CHANNEL_ABOVE;
43 case NL80211_CHAN_HT40MINUS:
44 return SEC_CHANNEL_BELOW;
45 default:
46 return NO_SEC_CHANNEL;
47 }
48 }
49
50 /*
51 * This function maps the driver channel type into nl802.11 channel type.
52 *
53 * The mapping is as follows -
54 * NO_SEC_CHANNEL -> NL80211_CHAN_HT20
55 * SEC_CHANNEL_ABOVE -> NL80211_CHAN_HT40PLUS
56 * SEC_CHANNEL_BELOW -> NL80211_CHAN_HT40MINUS
57 * Others -> NL80211_CHAN_HT20
58 */
59 static enum nl80211_channel_type
60 mwifiex_channels_to_cfg80211_channel_type(int channel_type)
61 {
62 switch (channel_type) {
63 case NO_SEC_CHANNEL:
64 return NL80211_CHAN_HT20;
65 case SEC_CHANNEL_ABOVE:
66 return NL80211_CHAN_HT40PLUS;
67 case SEC_CHANNEL_BELOW:
68 return NL80211_CHAN_HT40MINUS;
69 default:
70 return NL80211_CHAN_HT20;
71 }
72 }
73
74 /*
75 * This function checks whether WEP is set.
76 */
77 static int
78 mwifiex_is_alg_wep(u32 cipher)
79 {
80 switch (cipher) {
81 case WLAN_CIPHER_SUITE_WEP40:
82 case WLAN_CIPHER_SUITE_WEP104:
83 return 1;
84 default:
85 break;
86 }
87
88 return 0;
89 }
90
91 /*
92 * This function retrieves the private structure from kernel wiphy structure.
93 */
94 static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
95 {
96 return (void *) (*(unsigned long *) wiphy_priv(wiphy));
97 }
98
99 /*
100 * CFG802.11 operation handler to delete a network key.
101 */
102 static int
103 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
104 u8 key_index, bool pairwise, const u8 *mac_addr)
105 {
106 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
107
108 if (mwifiex_set_encode(priv, NULL, 0, key_index, 1)) {
109 wiphy_err(wiphy, "deleting the crypto keys\n");
110 return -EFAULT;
111 }
112
113 wiphy_dbg(wiphy, "info: crypto keys deleted\n");
114 return 0;
115 }
116
117 /*
118 * CFG802.11 operation handler to set Tx power.
119 */
120 static int
121 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
122 enum nl80211_tx_power_setting type,
123 int dbm)
124 {
125 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
126 struct mwifiex_power_cfg power_cfg;
127
128 if (type == NL80211_TX_POWER_FIXED) {
129 power_cfg.is_power_auto = 0;
130 power_cfg.power_level = dbm;
131 } else {
132 power_cfg.is_power_auto = 1;
133 }
134
135 return mwifiex_set_tx_power(priv, &power_cfg);
136 }
137
138 /*
139 * CFG802.11 operation handler to set Power Save option.
140 *
141 * The timeout value, if provided, is currently ignored.
142 */
143 static int
144 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
145 struct net_device *dev,
146 bool enabled, int timeout)
147 {
148 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
149 u32 ps_mode;
150
151 if (timeout)
152 wiphy_dbg(wiphy,
153 "info: ignoring the timeout value"
154 " for IEEE power save\n");
155
156 ps_mode = enabled;
157
158 return mwifiex_drv_set_power(priv, &ps_mode);
159 }
160
161 /*
162 * CFG802.11 operation handler to set the default network key.
163 */
164 static int
165 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
166 u8 key_index, bool unicast,
167 bool multicast)
168 {
169 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
170
171 /* Return if WEP key not configured */
172 if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
173 return 0;
174
175 if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
176 wiphy_err(wiphy, "set default Tx key index\n");
177 return -EFAULT;
178 }
179
180 return 0;
181 }
182
183 /*
184 * CFG802.11 operation handler to add a network key.
185 */
186 static int
187 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
188 u8 key_index, bool pairwise, const u8 *mac_addr,
189 struct key_params *params)
190 {
191 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
192
193 if (mwifiex_set_encode(priv, params->key, params->key_len,
194 key_index, 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_private *priv = mwifiex_cfg80211_get_priv(wiphy);
220 struct mwifiex_adapter *adapter = priv->adapter;
221 struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
222
223 /* Set country code */
224 domain_info->country_code[0] = priv->country_code[0];
225 domain_info->country_code[1] = priv->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 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
278 HostCmd_ACT_GEN_SET, 0, NULL)) {
279 wiphy_err(wiphy, "11D: setting domain info in FW\n");
280 return -1;
281 }
282
283 return 0;
284 }
285
286 /*
287 * CFG802.11 regulatory domain callback function.
288 *
289 * This function is called when the regulatory domain is changed due to the
290 * following reasons -
291 * - Set by driver
292 * - Set by system core
293 * - Set by user
294 * - Set bt Country IE
295 */
296 static int mwifiex_reg_notifier(struct wiphy *wiphy,
297 struct regulatory_request *request)
298 {
299 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
300
301 wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
302 " %c%c\n", request->alpha2[0], request->alpha2[1]);
303
304 memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
305
306 switch (request->initiator) {
307 case NL80211_REGDOM_SET_BY_DRIVER:
308 case NL80211_REGDOM_SET_BY_CORE:
309 case NL80211_REGDOM_SET_BY_USER:
310 break;
311 /* Todo: apply driver specific changes in channel flags based
312 on the request initiator if necessary. */
313 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
314 break;
315 }
316 mwifiex_send_domain_info_cmd_fw(wiphy);
317
318 return 0;
319 }
320
321 /*
322 * This function sets the RF channel.
323 *
324 * This function creates multiple IOCTL requests, populates them accordingly
325 * and issues them to set the band/channel and frequency.
326 */
327 static int
328 mwifiex_set_rf_channel(struct mwifiex_private *priv,
329 struct ieee80211_channel *chan,
330 enum nl80211_channel_type channel_type)
331 {
332 struct mwifiex_chan_freq_power cfp;
333 struct mwifiex_ds_band_cfg band_cfg;
334 u32 config_bands = 0;
335 struct wiphy *wiphy = priv->wdev->wiphy;
336
337 if (chan) {
338 memset(&band_cfg, 0, sizeof(band_cfg));
339 /* Set appropriate bands */
340 if (chan->band == IEEE80211_BAND_2GHZ)
341 config_bands = BAND_B | BAND_G | BAND_GN;
342 else
343 config_bands = BAND_AN | BAND_A;
344 if (priv->bss_mode == NL80211_IFTYPE_STATION
345 || priv->bss_mode == NL80211_IFTYPE_UNSPECIFIED) {
346 band_cfg.config_bands = config_bands;
347 } else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
348 band_cfg.config_bands = config_bands;
349 band_cfg.adhoc_start_band = config_bands;
350 }
351
352 band_cfg.sec_chan_offset =
353 mwifiex_cfg80211_channel_type_to_mwifiex_channels
354 (channel_type);
355
356 if (mwifiex_set_radio_band_cfg(priv, &band_cfg))
357 return -EFAULT;
358
359 mwifiex_send_domain_info_cmd_fw(wiphy);
360 }
361
362 wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
363 "mode %d\n", config_bands, band_cfg.sec_chan_offset,
364 priv->bss_mode);
365 if (!chan)
366 return 0;
367
368 memset(&cfp, 0, sizeof(cfp));
369 cfp.freq = chan->center_freq;
370 cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
371
372 if (mwifiex_bss_set_channel(priv, &cfp))
373 return -EFAULT;
374
375 return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
376 }
377
378 /*
379 * CFG802.11 operation handler to set channel.
380 *
381 * This function can only be used when station is not connected.
382 */
383 static int
384 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
385 struct ieee80211_channel *chan,
386 enum nl80211_channel_type channel_type)
387 {
388 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
389
390 if (priv->media_connected) {
391 wiphy_err(wiphy, "This setting is valid only when station "
392 "is not connected\n");
393 return -EINVAL;
394 }
395
396 return mwifiex_set_rf_channel(priv, chan, channel_type);
397 }
398
399 /*
400 * This function sets the fragmentation threshold.
401 *
402 * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
403 * and MWIFIEX_FRAG_MAX_VALUE.
404 */
405 static int
406 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
407 {
408 int ret;
409
410 if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
411 || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
412 return -EINVAL;
413
414 /* Send request to firmware */
415 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
416 HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
417 &frag_thr);
418
419 return ret;
420 }
421
422 /*
423 * This function sets the RTS threshold.
424
425 * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
426 * and MWIFIEX_RTS_MAX_VALUE.
427 */
428 static int
429 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
430 {
431 if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
432 rts_thr = MWIFIEX_RTS_MAX_VALUE;
433
434 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
435 HostCmd_ACT_GEN_SET, RTS_THRESH_I,
436 &rts_thr);
437 }
438
439 /*
440 * CFG802.11 operation handler to set wiphy parameters.
441 *
442 * This function can be used to set the RTS threshold and the
443 * Fragmentation threshold of the driver.
444 */
445 static int
446 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
447 {
448 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
449 int ret = 0;
450
451 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
452 ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
453 if (ret)
454 return ret;
455 }
456
457 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
458 ret = mwifiex_set_frag(priv, wiphy->frag_threshold);
459
460 return ret;
461 }
462
463 /*
464 * CFG802.11 operation handler to change interface type.
465 */
466 static int
467 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
468 struct net_device *dev,
469 enum nl80211_iftype type, u32 *flags,
470 struct vif_params *params)
471 {
472 int ret;
473 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
474
475 if (priv->bss_mode == type) {
476 wiphy_warn(wiphy, "already set to required type\n");
477 return 0;
478 }
479
480 priv->bss_mode = type;
481
482 switch (type) {
483 case NL80211_IFTYPE_ADHOC:
484 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
485 wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
486 break;
487 case NL80211_IFTYPE_STATION:
488 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
489 wiphy_dbg(wiphy, "info: setting interface type to managed\n");
490 break;
491 case NL80211_IFTYPE_UNSPECIFIED:
492 dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
493 wiphy_dbg(wiphy, "info: setting interface type to auto\n");
494 return 0;
495 default:
496 wiphy_err(wiphy, "unknown interface type: %d\n", type);
497 return -EINVAL;
498 }
499
500 mwifiex_deauthenticate(priv, NULL);
501
502 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
503
504 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
505 HostCmd_ACT_GEN_SET, 0, NULL);
506
507 return ret;
508 }
509
510 /*
511 * This function dumps the station information on a buffer.
512 *
513 * The following information are shown -
514 * - Total bytes transmitted
515 * - Total bytes received
516 * - Total packets transmitted
517 * - Total packets received
518 * - Signal quality level
519 * - Transmission rate
520 */
521 static int
522 mwifiex_dump_station_info(struct mwifiex_private *priv,
523 struct station_info *sinfo)
524 {
525 struct mwifiex_ds_get_signal signal;
526 struct mwifiex_rate_cfg rate;
527 int ret = 0;
528
529 sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
530 STATION_INFO_RX_PACKETS |
531 STATION_INFO_TX_PACKETS
532 | STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;
533
534 /* Get signal information from the firmware */
535 memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
536 if (mwifiex_get_signal_info(priv, &signal)) {
537 dev_err(priv->adapter->dev, "getting signal information\n");
538 ret = -EFAULT;
539 }
540
541 if (mwifiex_drv_get_data_rate(priv, &rate)) {
542 dev_err(priv->adapter->dev, "getting data rate\n");
543 ret = -EFAULT;
544 }
545
546 /*
547 * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
548 * MCS index values for us are 0 to 7.
549 */
550 if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
551 sinfo->txrate.mcs = priv->tx_rate;
552 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
553 /* 40MHz rate */
554 if (priv->tx_htinfo & BIT(1))
555 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
556 /* SGI enabled */
557 if (priv->tx_htinfo & BIT(2))
558 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
559 }
560
561 sinfo->rx_bytes = priv->stats.rx_bytes;
562 sinfo->tx_bytes = priv->stats.tx_bytes;
563 sinfo->rx_packets = priv->stats.rx_packets;
564 sinfo->tx_packets = priv->stats.tx_packets;
565 sinfo->signal = priv->qual_level;
566 /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
567 sinfo->txrate.legacy = rate.rate * 5;
568
569 return ret;
570 }
571
572 /*
573 * CFG802.11 operation handler to get station information.
574 *
575 * This function only works in connected mode, and dumps the
576 * requested station information, if available.
577 */
578 static int
579 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
580 u8 *mac, struct station_info *sinfo)
581 {
582 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
583
584 if (!priv->media_connected)
585 return -ENOENT;
586 if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
587 return -ENOENT;
588
589 return mwifiex_dump_station_info(priv, sinfo);
590 }
591
592 /* Supported rates to be advertised to the cfg80211 */
593
594 static struct ieee80211_rate mwifiex_rates[] = {
595 {.bitrate = 10, .hw_value = 2, },
596 {.bitrate = 20, .hw_value = 4, },
597 {.bitrate = 55, .hw_value = 11, },
598 {.bitrate = 110, .hw_value = 22, },
599 {.bitrate = 220, .hw_value = 44, },
600 {.bitrate = 60, .hw_value = 12, },
601 {.bitrate = 90, .hw_value = 18, },
602 {.bitrate = 120, .hw_value = 24, },
603 {.bitrate = 180, .hw_value = 36, },
604 {.bitrate = 240, .hw_value = 48, },
605 {.bitrate = 360, .hw_value = 72, },
606 {.bitrate = 480, .hw_value = 96, },
607 {.bitrate = 540, .hw_value = 108, },
608 {.bitrate = 720, .hw_value = 144, },
609 };
610
611 /* Channel definitions to be advertised to cfg80211 */
612
613 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
614 {.center_freq = 2412, .hw_value = 1, },
615 {.center_freq = 2417, .hw_value = 2, },
616 {.center_freq = 2422, .hw_value = 3, },
617 {.center_freq = 2427, .hw_value = 4, },
618 {.center_freq = 2432, .hw_value = 5, },
619 {.center_freq = 2437, .hw_value = 6, },
620 {.center_freq = 2442, .hw_value = 7, },
621 {.center_freq = 2447, .hw_value = 8, },
622 {.center_freq = 2452, .hw_value = 9, },
623 {.center_freq = 2457, .hw_value = 10, },
624 {.center_freq = 2462, .hw_value = 11, },
625 {.center_freq = 2467, .hw_value = 12, },
626 {.center_freq = 2472, .hw_value = 13, },
627 {.center_freq = 2484, .hw_value = 14, },
628 };
629
630 static struct ieee80211_supported_band mwifiex_band_2ghz = {
631 .channels = mwifiex_channels_2ghz,
632 .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
633 .bitrates = mwifiex_rates,
634 .n_bitrates = 14,
635 };
636
637 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
638 {.center_freq = 5040, .hw_value = 8, },
639 {.center_freq = 5060, .hw_value = 12, },
640 {.center_freq = 5080, .hw_value = 16, },
641 {.center_freq = 5170, .hw_value = 34, },
642 {.center_freq = 5190, .hw_value = 38, },
643 {.center_freq = 5210, .hw_value = 42, },
644 {.center_freq = 5230, .hw_value = 46, },
645 {.center_freq = 5180, .hw_value = 36, },
646 {.center_freq = 5200, .hw_value = 40, },
647 {.center_freq = 5220, .hw_value = 44, },
648 {.center_freq = 5240, .hw_value = 48, },
649 {.center_freq = 5260, .hw_value = 52, },
650 {.center_freq = 5280, .hw_value = 56, },
651 {.center_freq = 5300, .hw_value = 60, },
652 {.center_freq = 5320, .hw_value = 64, },
653 {.center_freq = 5500, .hw_value = 100, },
654 {.center_freq = 5520, .hw_value = 104, },
655 {.center_freq = 5540, .hw_value = 108, },
656 {.center_freq = 5560, .hw_value = 112, },
657 {.center_freq = 5580, .hw_value = 116, },
658 {.center_freq = 5600, .hw_value = 120, },
659 {.center_freq = 5620, .hw_value = 124, },
660 {.center_freq = 5640, .hw_value = 128, },
661 {.center_freq = 5660, .hw_value = 132, },
662 {.center_freq = 5680, .hw_value = 136, },
663 {.center_freq = 5700, .hw_value = 140, },
664 {.center_freq = 5745, .hw_value = 149, },
665 {.center_freq = 5765, .hw_value = 153, },
666 {.center_freq = 5785, .hw_value = 157, },
667 {.center_freq = 5805, .hw_value = 161, },
668 {.center_freq = 5825, .hw_value = 165, },
669 };
670
671 static struct ieee80211_supported_band mwifiex_band_5ghz = {
672 .channels = mwifiex_channels_5ghz,
673 .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
674 .bitrates = mwifiex_rates - 4,
675 .n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
676 };
677
678
679 /* Supported crypto cipher suits to be advertised to cfg80211 */
680
681 static const u32 mwifiex_cipher_suites[] = {
682 WLAN_CIPHER_SUITE_WEP40,
683 WLAN_CIPHER_SUITE_WEP104,
684 WLAN_CIPHER_SUITE_TKIP,
685 WLAN_CIPHER_SUITE_CCMP,
686 };
687
688 /*
689 * CFG802.11 operation handler for setting bit rates.
690 *
691 * Function selects legacy bang B/G/BG from corresponding bitrates selection.
692 * Currently only 2.4GHz band is supported.
693 */
694 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
695 struct net_device *dev,
696 const u8 *peer,
697 const struct cfg80211_bitrate_mask *mask)
698 {
699 struct mwifiex_ds_band_cfg band_cfg;
700 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
701 int index = 0, mode = 0, i;
702
703 /* Currently only 2.4GHz is supported */
704 for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
705 /*
706 * Rates below 6 Mbps in the table are CCK rates; 802.11b
707 * and from 6 they are OFDM; 802.11G
708 */
709 if (mwifiex_rates[i].bitrate == 60) {
710 index = 1 << i;
711 break;
712 }
713 }
714
715 if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
716 mode = BAND_B;
717 } else {
718 mode = BAND_G;
719 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
720 mode |= BAND_B;
721 }
722
723 memset(&band_cfg, 0, sizeof(band_cfg));
724 band_cfg.config_bands = mode;
725
726 if (priv->bss_mode == NL80211_IFTYPE_ADHOC)
727 band_cfg.adhoc_start_band = mode;
728
729 band_cfg.sec_chan_offset = NO_SEC_CHANNEL;
730
731 if (mwifiex_set_radio_band_cfg(priv, &band_cfg))
732 return -EFAULT;
733
734 wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
735 (mode & BAND_B) ? "b" : "",
736 (mode & BAND_G) ? "g" : "");
737
738 return 0;
739 }
740
741 /*
742 * CFG802.11 operation handler for disconnection request.
743 *
744 * This function does not work when there is already a disconnection
745 * procedure going on.
746 */
747 static int
748 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
749 u16 reason_code)
750 {
751 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
752
753 if (priv->disconnect)
754 return -EBUSY;
755
756 priv->disconnect = 1;
757 if (mwifiex_deauthenticate(priv, NULL))
758 return -EFAULT;
759
760 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
761 " reason code %d\n", priv->cfg_bssid, reason_code);
762
763 queue_work(priv->workqueue, &priv->cfg_workqueue);
764
765 return 0;
766 }
767
768 /*
769 * This function informs the CFG802.11 subsystem of a new IBSS.
770 *
771 * The following information are sent to the CFG802.11 subsystem
772 * to register the new IBSS. If we do not register the new IBSS,
773 * a kernel panic will result.
774 * - SSID
775 * - SSID length
776 * - BSSID
777 * - Channel
778 */
779 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
780 {
781 struct ieee80211_channel *chan;
782 struct mwifiex_bss_info bss_info;
783 int ie_len;
784 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
785 enum ieee80211_band band;
786
787 if (mwifiex_get_bss_info(priv, &bss_info))
788 return -1;
789
790 ie_buf[0] = WLAN_EID_SSID;
791 ie_buf[1] = bss_info.ssid.ssid_len;
792
793 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
794 &bss_info.ssid.ssid,
795 bss_info.ssid.ssid_len);
796 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
797
798 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
799 chan = __ieee80211_get_channel(priv->wdev->wiphy,
800 ieee80211_channel_to_frequency(bss_info.bss_chan,
801 band));
802
803 cfg80211_inform_bss(priv->wdev->wiphy, chan,
804 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
805 0, ie_buf, ie_len, 0, GFP_KERNEL);
806 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
807
808 return 0;
809 }
810
811 /*
812 * This function connects with a BSS.
813 *
814 * This function handles both Infra and Ad-Hoc modes. It also performs
815 * validity checking on the provided parameters, disconnects from the
816 * current BSS (if any), sets up the association/scan parameters,
817 * including security settings, and performs specific SSID scan before
818 * trying to connect.
819 *
820 * For Infra mode, the function returns failure if the specified SSID
821 * is not found in scan table. However, for Ad-Hoc mode, it can create
822 * the IBSS if it does not exist. On successful completion in either case,
823 * the function notifies the CFG802.11 subsystem of the new BSS connection.
824 */
825 static int
826 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
827 u8 *bssid, int mode, struct ieee80211_channel *channel,
828 struct cfg80211_connect_params *sme, bool privacy)
829 {
830 struct mwifiex_802_11_ssid req_ssid;
831 int ret, auth_type = 0;
832 struct cfg80211_bss *bss = NULL;
833 u8 is_scanning_required = 0;
834
835 memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));
836
837 req_ssid.ssid_len = ssid_len;
838 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
839 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
840 return -EINVAL;
841 }
842
843 memcpy(req_ssid.ssid, ssid, ssid_len);
844 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
845 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
846 return -EINVAL;
847 }
848
849 /* disconnect before try to associate */
850 mwifiex_deauthenticate(priv, NULL);
851
852 if (channel)
853 ret = mwifiex_set_rf_channel(priv, channel,
854 mwifiex_channels_to_cfg80211_channel_type
855 (priv->adapter->chan_offset));
856
857 ret = mwifiex_set_encode(priv, NULL, 0, 0, 1); /* Disable keys */
858
859 if (mode == NL80211_IFTYPE_ADHOC) {
860 /* "privacy" is set only for ad-hoc mode */
861 if (privacy) {
862 /*
863 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
864 * the firmware can find a matching network from the
865 * scan. The cfg80211 does not give us the encryption
866 * mode at this stage so just setting it to WEP here.
867 */
868 priv->sec_info.encryption_mode =
869 WLAN_CIPHER_SUITE_WEP104;
870 priv->sec_info.authentication_mode =
871 NL80211_AUTHTYPE_OPEN_SYSTEM;
872 }
873
874 goto done;
875 }
876
877 /* Now handle infra mode. "sme" is valid for infra mode only */
878 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
879 || sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
880 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
881 else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
882 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
883
884 if (sme->crypto.n_ciphers_pairwise) {
885 priv->sec_info.encryption_mode =
886 sme->crypto.ciphers_pairwise[0];
887 priv->sec_info.authentication_mode = auth_type;
888 }
889
890 if (sme->crypto.cipher_group) {
891 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
892 priv->sec_info.authentication_mode = auth_type;
893 }
894 if (sme->ie)
895 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
896
897 if (sme->key) {
898 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
899 dev_dbg(priv->adapter->dev,
900 "info: setting wep encryption"
901 " with key len %d\n", sme->key_len);
902 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
903 sme->key_idx, 0);
904 }
905 }
906 done:
907 /* Do specific SSID scanning */
908 if (mwifiex_request_scan(priv, &req_ssid)) {
909 dev_err(priv->adapter->dev, "scan error\n");
910 return -EFAULT;
911 }
912
913 /*
914 * Scan entries are valid for some time (15 sec). So we can save one
915 * active scan time if we just try cfg80211_get_bss first. If it fails
916 * then request scan and cfg80211_get_bss() again for final output.
917 */
918 while (1) {
919 if (is_scanning_required) {
920 /* Do specific SSID scanning */
921 if (mwifiex_request_scan(priv, &req_ssid)) {
922 dev_err(priv->adapter->dev, "scan error\n");
923 return -EFAULT;
924 }
925 }
926
927 /* Find the BSS we want using available scan results */
928 if (mode == NL80211_IFTYPE_ADHOC)
929 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
930 bssid, ssid, ssid_len,
931 WLAN_CAPABILITY_IBSS,
932 WLAN_CAPABILITY_IBSS);
933 else
934 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
935 bssid, ssid, ssid_len,
936 WLAN_CAPABILITY_ESS,
937 WLAN_CAPABILITY_ESS);
938
939 if (!bss) {
940 if (is_scanning_required) {
941 dev_warn(priv->adapter->dev, "assoc: requested "
942 "bss not found in scan results\n");
943 break;
944 }
945 is_scanning_required = 1;
946 } else {
947 dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
948 (char *) req_ssid.ssid, bss->bssid);
949 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
950 break;
951 }
952 }
953
954 if (mwifiex_bss_start(priv, bss, &req_ssid))
955 return -EFAULT;
956
957 if (mode == NL80211_IFTYPE_ADHOC) {
958 /* Inform the BSS information to kernel, otherwise
959 * kernel will give a panic after successful assoc */
960 if (mwifiex_cfg80211_inform_ibss_bss(priv))
961 return -EFAULT;
962 }
963
964 return ret;
965 }
966
967 /*
968 * CFG802.11 operation handler for association request.
969 *
970 * This function does not work when the current mode is set to Ad-Hoc, or
971 * when there is already an association procedure going on. The given BSS
972 * information is used to associate.
973 */
974 static int
975 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
976 struct cfg80211_connect_params *sme)
977 {
978 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
979 int ret = 0;
980
981 if (priv->assoc_request)
982 return -EBUSY;
983
984 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
985 wiphy_err(wiphy, "received infra assoc request "
986 "when station is in ibss mode\n");
987 goto done;
988 }
989
990 priv->assoc_request = -EINPROGRESS;
991
992 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
993 (char *) sme->ssid, sme->bssid);
994
995 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
996 priv->bss_mode, sme->channel, sme, 0);
997
998 priv->assoc_request = 1;
999 done:
1000 priv->assoc_result = ret;
1001 queue_work(priv->workqueue, &priv->cfg_workqueue);
1002 return ret;
1003 }
1004
1005 /*
1006 * CFG802.11 operation handler to join an IBSS.
1007 *
1008 * This function does not work in any mode other than Ad-Hoc, or if
1009 * a join operation is already in progress.
1010 */
1011 static int
1012 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1013 struct cfg80211_ibss_params *params)
1014 {
1015 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1016 int ret = 0;
1017
1018 if (priv->ibss_join_request)
1019 return -EBUSY;
1020
1021 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1022 wiphy_err(wiphy, "request to join ibss received "
1023 "when station is not in ibss mode\n");
1024 goto done;
1025 }
1026
1027 priv->ibss_join_request = -EINPROGRESS;
1028
1029 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1030 (char *) params->ssid, params->bssid);
1031
1032 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1033 params->bssid, priv->bss_mode,
1034 params->channel, NULL, params->privacy);
1035
1036 priv->ibss_join_request = 1;
1037 done:
1038 priv->ibss_join_result = ret;
1039 queue_work(priv->workqueue, &priv->cfg_workqueue);
1040 return ret;
1041 }
1042
1043 /*
1044 * CFG802.11 operation handler to leave an IBSS.
1045 *
1046 * This function does not work if a leave operation is
1047 * already in progress.
1048 */
1049 static int
1050 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1051 {
1052 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1053
1054 if (priv->disconnect)
1055 return -EBUSY;
1056
1057 priv->disconnect = 1;
1058
1059 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1060 priv->cfg_bssid);
1061 if (mwifiex_deauthenticate(priv, NULL))
1062 return -EFAULT;
1063
1064 queue_work(priv->workqueue, &priv->cfg_workqueue);
1065
1066 return 0;
1067 }
1068
1069 /*
1070 * CFG802.11 operation handler for scan request.
1071 *
1072 * This function issues a scan request to the firmware based upon
1073 * the user specified scan configuration. On successfull completion,
1074 * it also informs the results.
1075 */
1076 static int
1077 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1078 struct cfg80211_scan_request *request)
1079 {
1080 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1081
1082 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1083
1084 if (priv->scan_request && priv->scan_request != request)
1085 return -EBUSY;
1086
1087 priv->scan_request = request;
1088
1089 queue_work(priv->workqueue, &priv->cfg_workqueue);
1090 return 0;
1091 }
1092
1093 /*
1094 * This function sets up the CFG802.11 specific HT capability fields
1095 * with default values.
1096 *
1097 * The following default values are set -
1098 * - HT Supported = True
1099 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1100 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1101 * - HT Capabilities supported by firmware
1102 * - MCS information, Rx mask = 0xff
1103 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1104 */
1105 static void
1106 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1107 struct mwifiex_private *priv)
1108 {
1109 int rx_mcs_supp;
1110 struct ieee80211_mcs_info mcs_set;
1111 u8 *mcs = (u8 *)&mcs_set;
1112 struct mwifiex_adapter *adapter = priv->adapter;
1113
1114 ht_info->ht_supported = true;
1115 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1116 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1117
1118 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1119
1120 /* Fill HT capability information */
1121 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1122 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1123 else
1124 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1125
1126 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1127 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1128 else
1129 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1130
1131 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1132 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1133 else
1134 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1135
1136 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1137 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1138 else
1139 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1140
1141 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1142 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1143 else
1144 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1145
1146 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1147 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1148
1149 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1150 /* Set MCS for 1x1 */
1151 memset(mcs, 0xff, rx_mcs_supp);
1152 /* Clear all the other values */
1153 memset(&mcs[rx_mcs_supp], 0,
1154 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1155 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1156 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1157 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1158 SETHT_MCS32(mcs_set.rx_mask);
1159
1160 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1161
1162 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1163 }
1164
1165 /*
1166 * create a new virtual interface with the given name
1167 */
1168 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1169 char *name,
1170 enum nl80211_iftype type,
1171 u32 *flags,
1172 struct vif_params *params)
1173 {
1174 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1175 struct mwifiex_adapter *adapter;
1176 struct net_device *dev;
1177 void *mdev_priv;
1178
1179 if (!priv)
1180 return NULL;
1181
1182 adapter = priv->adapter;
1183 if (!adapter)
1184 return NULL;
1185
1186 switch (type) {
1187 case NL80211_IFTYPE_UNSPECIFIED:
1188 case NL80211_IFTYPE_STATION:
1189 case NL80211_IFTYPE_ADHOC:
1190 if (priv->bss_mode) {
1191 wiphy_err(wiphy, "cannot create multiple"
1192 " station/adhoc interfaces\n");
1193 return NULL;
1194 }
1195
1196 if (type == NL80211_IFTYPE_UNSPECIFIED)
1197 priv->bss_mode = NL80211_IFTYPE_STATION;
1198 else
1199 priv->bss_mode = type;
1200
1201 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1202 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1203 priv->bss_priority = 0;
1204 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1205 priv->bss_index = 0;
1206 priv->bss_num = 0;
1207
1208 break;
1209 default:
1210 wiphy_err(wiphy, "type not supported\n");
1211 return NULL;
1212 }
1213
1214 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1215 ether_setup, 1);
1216 if (!dev) {
1217 wiphy_err(wiphy, "no memory available for netdevice\n");
1218 goto error;
1219 }
1220
1221 dev_net_set(dev, wiphy_net(wiphy));
1222 dev->ieee80211_ptr = priv->wdev;
1223 dev->ieee80211_ptr->iftype = priv->bss_mode;
1224 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1225 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1226 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1227
1228 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1229 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1230 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1231
1232 mdev_priv = netdev_priv(dev);
1233 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1234
1235 priv->netdev = dev;
1236 mwifiex_init_priv_params(priv, dev);
1237
1238 SET_NETDEV_DEV(dev, adapter->dev);
1239
1240 /* Register network device */
1241 if (register_netdevice(dev)) {
1242 wiphy_err(wiphy, "cannot register virtual network device\n");
1243 goto error;
1244 }
1245
1246 sema_init(&priv->async_sem, 1);
1247 priv->scan_pending_on_block = false;
1248
1249 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1250
1251 #ifdef CONFIG_DEBUG_FS
1252 mwifiex_dev_debugfs_init(priv);
1253 #endif
1254 return dev;
1255 error:
1256 if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1257 free_netdev(dev);
1258 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1259
1260 return NULL;
1261 }
1262 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1263
1264 /*
1265 * del_virtual_intf: remove the virtual interface determined by dev
1266 */
1267 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1268 {
1269 struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
1270
1271 if (!priv || !dev)
1272 return 0;
1273
1274 #ifdef CONFIG_DEBUG_FS
1275 mwifiex_dev_debugfs_remove(priv);
1276 #endif
1277
1278 if (!netif_queue_stopped(priv->netdev))
1279 netif_stop_queue(priv->netdev);
1280
1281 if (netif_carrier_ok(priv->netdev))
1282 netif_carrier_off(priv->netdev);
1283
1284 if (dev->reg_state == NETREG_REGISTERED)
1285 unregister_netdevice(dev);
1286
1287 if (dev->reg_state == NETREG_UNREGISTERED)
1288 free_netdev(dev);
1289
1290 /* Clear the priv in adapter */
1291 priv->netdev = NULL;
1292
1293 priv->media_connected = false;
1294
1295 cancel_work_sync(&priv->cfg_workqueue);
1296 flush_workqueue(priv->workqueue);
1297 destroy_workqueue(priv->workqueue);
1298
1299 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1300
1301 return 0;
1302 }
1303 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1304
1305 /* station cfg80211 operations */
1306 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1307 .add_virtual_intf = mwifiex_add_virtual_intf,
1308 .del_virtual_intf = mwifiex_del_virtual_intf,
1309 .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1310 .scan = mwifiex_cfg80211_scan,
1311 .connect = mwifiex_cfg80211_connect,
1312 .disconnect = mwifiex_cfg80211_disconnect,
1313 .get_station = mwifiex_cfg80211_get_station,
1314 .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1315 .set_channel = mwifiex_cfg80211_set_channel,
1316 .join_ibss = mwifiex_cfg80211_join_ibss,
1317 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1318 .add_key = mwifiex_cfg80211_add_key,
1319 .del_key = mwifiex_cfg80211_del_key,
1320 .set_default_key = mwifiex_cfg80211_set_default_key,
1321 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1322 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1323 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1324 };
1325
1326 /*
1327 * This function registers the device with CFG802.11 subsystem.
1328 *
1329 * The function creates the wireless device/wiphy, populates it with
1330 * default parameters and handler function pointers, and finally
1331 * registers the device.
1332 */
1333 int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1334 {
1335 int ret;
1336 void *wdev_priv;
1337 struct wireless_dev *wdev;
1338
1339 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1340 if (!wdev) {
1341 dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
1342 __func__);
1343 return -ENOMEM;
1344 }
1345 wdev->wiphy =
1346 wiphy_new(&mwifiex_cfg80211_ops,
1347 sizeof(struct mwifiex_private *));
1348 if (!wdev->wiphy) {
1349 kfree(wdev);
1350 return -ENOMEM;
1351 }
1352 wdev->iftype = NL80211_IFTYPE_STATION;
1353 wdev->wiphy->max_scan_ssids = 10;
1354 wdev->wiphy->interface_modes =
1355 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1356
1357 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1358 mwifiex_setup_ht_caps(
1359 &wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1360
1361 if (priv->adapter->config_bands & BAND_A) {
1362 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1363 mwifiex_setup_ht_caps(
1364 &wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1365 } else {
1366 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1367 }
1368
1369 /* Initialize cipher suits */
1370 wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
1371 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1372
1373 memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1374 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1375
1376 /* We are using custom domains */
1377 wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1378
1379 /* Reserve space for bss band information */
1380 wdev->wiphy->bss_priv_size = sizeof(u8);
1381
1382 wdev->wiphy->reg_notifier = mwifiex_reg_notifier;
1383
1384 /* Set struct mwifiex_private pointer in wiphy_priv */
1385 wdev_priv = wiphy_priv(wdev->wiphy);
1386
1387 *(unsigned long *) wdev_priv = (unsigned long) priv;
1388
1389 set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);
1390
1391 ret = wiphy_register(wdev->wiphy);
1392 if (ret < 0) {
1393 dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
1394 __func__);
1395 wiphy_free(wdev->wiphy);
1396 kfree(wdev);
1397 return ret;
1398 } else {
1399 dev_dbg(priv->adapter->dev,
1400 "info: successfully registered wiphy device\n");
1401 }
1402
1403 priv->wdev = wdev;
1404
1405 return ret;
1406 }
1407
1408 /*
1409 * This function handles the result of different pending network operations.
1410 *
1411 * The following operations are handled and CFG802.11 subsystem is
1412 * notified accordingly -
1413 * - Scan request completion
1414 * - Association request completion
1415 * - IBSS join request completion
1416 * - Disconnect request completion
1417 */
1418 void
1419 mwifiex_cfg80211_results(struct work_struct *work)
1420 {
1421 struct mwifiex_private *priv =
1422 container_of(work, struct mwifiex_private, cfg_workqueue);
1423 struct mwifiex_user_scan_cfg *scan_req;
1424 int ret = 0, i;
1425 struct ieee80211_channel *chan;
1426
1427 if (priv->scan_request) {
1428 scan_req = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1429 GFP_KERNEL);
1430 if (!scan_req) {
1431 dev_err(priv->adapter->dev, "failed to alloc "
1432 "scan_req\n");
1433 return;
1434 }
1435 for (i = 0; i < priv->scan_request->n_ssids; i++) {
1436 memcpy(scan_req->ssid_list[i].ssid,
1437 priv->scan_request->ssids[i].ssid,
1438 priv->scan_request->ssids[i].ssid_len);
1439 scan_req->ssid_list[i].max_len =
1440 priv->scan_request->ssids[i].ssid_len;
1441 }
1442 for (i = 0; i < priv->scan_request->n_channels; i++) {
1443 chan = priv->scan_request->channels[i];
1444 scan_req->chan_list[i].chan_number = chan->hw_value;
1445 scan_req->chan_list[i].radio_type = chan->band;
1446 if (chan->flags & IEEE80211_CHAN_DISABLED)
1447 scan_req->chan_list[i].scan_type =
1448 MWIFIEX_SCAN_TYPE_PASSIVE;
1449 else
1450 scan_req->chan_list[i].scan_type =
1451 MWIFIEX_SCAN_TYPE_ACTIVE;
1452 scan_req->chan_list[i].scan_time = 0;
1453 }
1454 if (mwifiex_set_user_scan_ioctl(priv, scan_req))
1455 ret = -EFAULT;
1456 priv->scan_result_status = ret;
1457 dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
1458 __func__);
1459 cfg80211_scan_done(priv->scan_request,
1460 (priv->scan_result_status < 0));
1461 priv->scan_request = NULL;
1462 kfree(scan_req);
1463 }
1464
1465 if (priv->assoc_request == 1) {
1466 if (!priv->assoc_result) {
1467 cfg80211_connect_result(priv->netdev, priv->cfg_bssid,
1468 NULL, 0, NULL, 0,
1469 WLAN_STATUS_SUCCESS,
1470 GFP_KERNEL);
1471 dev_dbg(priv->adapter->dev,
1472 "info: associated to bssid %pM successfully\n",
1473 priv->cfg_bssid);
1474 } else {
1475 dev_dbg(priv->adapter->dev,
1476 "info: association to bssid %pM failed\n",
1477 priv->cfg_bssid);
1478 memset(priv->cfg_bssid, 0, ETH_ALEN);
1479 }
1480 priv->assoc_request = 0;
1481 priv->assoc_result = 0;
1482 }
1483
1484 if (priv->ibss_join_request == 1) {
1485 if (!priv->ibss_join_result) {
1486 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid,
1487 GFP_KERNEL);
1488 dev_dbg(priv->adapter->dev,
1489 "info: joined/created adhoc network with bssid"
1490 " %pM successfully\n", priv->cfg_bssid);
1491 } else {
1492 dev_dbg(priv->adapter->dev,
1493 "info: failed creating/joining adhoc network\n");
1494 }
1495 priv->ibss_join_request = 0;
1496 priv->ibss_join_result = 0;
1497 }
1498
1499 if (priv->disconnect) {
1500 memset(priv->cfg_bssid, 0, ETH_ALEN);
1501 priv->disconnect = 0;
1502 }
1503 }
Linux kernel - Deliverables
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