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mwifiex: rearrange AP sys configure code
[mirror_ubuntu-artful-kernel.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 if (priv->bss_type == MWIFIEX_BSS_TYPE_STA)
391 return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
392 else
393 return mwifiex_uap_set_channel(priv, cfp.channel);
394 }
395
396 /*
397 * CFG802.11 operation handler to set channel.
398 *
399 * This function can only be used when station is not connected.
400 */
401 static int
402 mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
403 struct ieee80211_channel *chan,
404 enum nl80211_channel_type channel_type)
405 {
406 struct mwifiex_private *priv;
407 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
408
409 if (dev)
410 priv = mwifiex_netdev_get_priv(dev);
411 else
412 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
413
414 if (priv->media_connected) {
415 wiphy_err(wiphy, "This is invalid in connected state\n");
416 return -EINVAL;
417 }
418
419 return mwifiex_set_rf_channel(priv, chan, channel_type);
420 }
421
422 /*
423 * This function sets the fragmentation threshold.
424 *
425 * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
426 * and MWIFIEX_FRAG_MAX_VALUE.
427 */
428 static int
429 mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
430 {
431 if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
432 frag_thr > MWIFIEX_FRAG_MAX_VALUE)
433 frag_thr = MWIFIEX_FRAG_MAX_VALUE;
434
435 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
436 HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
437 &frag_thr);
438 }
439
440 /*
441 * This function sets the RTS threshold.
442
443 * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
444 * and MWIFIEX_RTS_MAX_VALUE.
445 */
446 static int
447 mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
448 {
449 if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
450 rts_thr = MWIFIEX_RTS_MAX_VALUE;
451
452 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
453 HostCmd_ACT_GEN_SET, RTS_THRESH_I,
454 &rts_thr);
455 }
456
457 /*
458 * CFG802.11 operation handler to set wiphy parameters.
459 *
460 * This function can be used to set the RTS threshold and the
461 * Fragmentation threshold of the driver.
462 */
463 static int
464 mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
465 {
466 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
467 struct mwifiex_private *priv;
468 struct mwifiex_uap_bss_param *bss_cfg;
469 int ret, bss_started, i;
470
471 for (i = 0; i < adapter->priv_num; i++) {
472 priv = adapter->priv[i];
473
474 switch (priv->bss_role) {
475 case MWIFIEX_BSS_ROLE_UAP:
476 bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param),
477 GFP_KERNEL);
478 if (!bss_cfg)
479 return -ENOMEM;
480
481 mwifiex_set_sys_config_invalid_data(bss_cfg);
482
483 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
484 bss_cfg->rts_threshold = wiphy->rts_threshold;
485 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
486 bss_cfg->frag_threshold = wiphy->frag_threshold;
487 if (changed & WIPHY_PARAM_RETRY_LONG)
488 bss_cfg->retry_limit = wiphy->retry_long;
489
490 bss_started = priv->bss_started;
491
492 ret = mwifiex_send_cmd_sync(priv,
493 HostCmd_CMD_UAP_BSS_STOP,
494 HostCmd_ACT_GEN_SET, 0,
495 NULL);
496 if (ret) {
497 wiphy_err(wiphy, "Failed to stop the BSS\n");
498 kfree(bss_cfg);
499 return ret;
500 }
501
502 ret = mwifiex_send_cmd_async(priv,
503 HostCmd_CMD_UAP_SYS_CONFIG,
504 HostCmd_ACT_GEN_SET,
505 UAP_BSS_PARAMS_I, bss_cfg);
506
507 kfree(bss_cfg);
508
509 if (ret) {
510 wiphy_err(wiphy, "Failed to set bss config\n");
511 return ret;
512 }
513
514 if (!bss_started)
515 break;
516
517 ret = mwifiex_send_cmd_async(priv,
518 HostCmd_CMD_UAP_BSS_START,
519 HostCmd_ACT_GEN_SET, 0,
520 NULL);
521 if (ret) {
522 wiphy_err(wiphy, "Failed to start BSS\n");
523 return ret;
524 }
525
526 break;
527 case MWIFIEX_BSS_ROLE_STA:
528 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
529 ret = mwifiex_set_rts(priv,
530 wiphy->rts_threshold);
531 if (ret)
532 return ret;
533 }
534 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
535 ret = mwifiex_set_frag(priv,
536 wiphy->frag_threshold);
537 if (ret)
538 return ret;
539 }
540 break;
541 }
542 }
543
544 return 0;
545 }
546
547 /*
548 * CFG802.11 operation handler to change interface type.
549 */
550 static int
551 mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
552 struct net_device *dev,
553 enum nl80211_iftype type, u32 *flags,
554 struct vif_params *params)
555 {
556 int ret;
557 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
558
559 switch (dev->ieee80211_ptr->iftype) {
560 case NL80211_IFTYPE_ADHOC:
561 switch (type) {
562 case NL80211_IFTYPE_STATION:
563 break;
564 case NL80211_IFTYPE_UNSPECIFIED:
565 wiphy_warn(wiphy, "%s: kept type as IBSS\n", dev->name);
566 case NL80211_IFTYPE_ADHOC: /* This shouldn't happen */
567 return 0;
568 case NL80211_IFTYPE_AP:
569 default:
570 wiphy_err(wiphy, "%s: changing to %d not supported\n",
571 dev->name, type);
572 return -EOPNOTSUPP;
573 }
574 break;
575 case NL80211_IFTYPE_STATION:
576 switch (type) {
577 case NL80211_IFTYPE_ADHOC:
578 break;
579 case NL80211_IFTYPE_UNSPECIFIED:
580 wiphy_warn(wiphy, "%s: kept type as STA\n", dev->name);
581 case NL80211_IFTYPE_STATION: /* This shouldn't happen */
582 return 0;
583 case NL80211_IFTYPE_AP:
584 default:
585 wiphy_err(wiphy, "%s: changing to %d not supported\n",
586 dev->name, type);
587 return -EOPNOTSUPP;
588 }
589 break;
590 case NL80211_IFTYPE_AP:
591 switch (type) {
592 case NL80211_IFTYPE_UNSPECIFIED:
593 wiphy_warn(wiphy, "%s: kept type as AP\n", dev->name);
594 case NL80211_IFTYPE_AP: /* This shouldn't happen */
595 return 0;
596 case NL80211_IFTYPE_ADHOC:
597 case NL80211_IFTYPE_STATION:
598 default:
599 wiphy_err(wiphy, "%s: changing to %d not supported\n",
600 dev->name, type);
601 return -EOPNOTSUPP;
602 }
603 break;
604 default:
605 wiphy_err(wiphy, "%s: unknown iftype: %d\n",
606 dev->name, dev->ieee80211_ptr->iftype);
607 return -EOPNOTSUPP;
608 }
609
610 dev->ieee80211_ptr->iftype = type;
611 priv->bss_mode = type;
612 mwifiex_deauthenticate(priv, NULL);
613
614 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
615
616 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
617 HostCmd_ACT_GEN_SET, 0, NULL);
618
619 return ret;
620 }
621
622 /*
623 * This function dumps the station information on a buffer.
624 *
625 * The following information are shown -
626 * - Total bytes transmitted
627 * - Total bytes received
628 * - Total packets transmitted
629 * - Total packets received
630 * - Signal quality level
631 * - Transmission rate
632 */
633 static int
634 mwifiex_dump_station_info(struct mwifiex_private *priv,
635 struct station_info *sinfo)
636 {
637 struct mwifiex_rate_cfg rate;
638
639 sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
640 STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
641 STATION_INFO_TX_BITRATE |
642 STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
643
644 /* Get signal information from the firmware */
645 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
646 HostCmd_ACT_GEN_GET, 0, NULL)) {
647 dev_err(priv->adapter->dev, "failed to get signal information\n");
648 return -EFAULT;
649 }
650
651 if (mwifiex_drv_get_data_rate(priv, &rate)) {
652 dev_err(priv->adapter->dev, "getting data rate\n");
653 return -EFAULT;
654 }
655
656 /* Get DTIM period information from firmware */
657 mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
658 HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
659 &priv->dtim_period);
660
661 /*
662 * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
663 * MCS index values for us are 0 to 7.
664 */
665 if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
666 sinfo->txrate.mcs = priv->tx_rate;
667 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
668 /* 40MHz rate */
669 if (priv->tx_htinfo & BIT(1))
670 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
671 /* SGI enabled */
672 if (priv->tx_htinfo & BIT(2))
673 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
674 }
675
676 sinfo->signal_avg = priv->bcn_rssi_avg;
677 sinfo->rx_bytes = priv->stats.rx_bytes;
678 sinfo->tx_bytes = priv->stats.tx_bytes;
679 sinfo->rx_packets = priv->stats.rx_packets;
680 sinfo->tx_packets = priv->stats.tx_packets;
681 sinfo->signal = priv->bcn_rssi_avg;
682 /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
683 sinfo->txrate.legacy = rate.rate * 5;
684
685 if (priv->bss_mode == NL80211_IFTYPE_STATION) {
686 sinfo->filled |= STATION_INFO_BSS_PARAM;
687 sinfo->bss_param.flags = 0;
688 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
689 WLAN_CAPABILITY_SHORT_PREAMBLE)
690 sinfo->bss_param.flags |=
691 BSS_PARAM_FLAGS_SHORT_PREAMBLE;
692 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
693 WLAN_CAPABILITY_SHORT_SLOT_TIME)
694 sinfo->bss_param.flags |=
695 BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
696 sinfo->bss_param.dtim_period = priv->dtim_period;
697 sinfo->bss_param.beacon_interval =
698 priv->curr_bss_params.bss_descriptor.beacon_period;
699 }
700
701 return 0;
702 }
703
704 /*
705 * CFG802.11 operation handler to get station information.
706 *
707 * This function only works in connected mode, and dumps the
708 * requested station information, if available.
709 */
710 static int
711 mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
712 u8 *mac, struct station_info *sinfo)
713 {
714 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
715
716 if (!priv->media_connected)
717 return -ENOENT;
718 if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
719 return -ENOENT;
720
721 return mwifiex_dump_station_info(priv, sinfo);
722 }
723
724 /*
725 * CFG802.11 operation handler to dump station information.
726 */
727 static int
728 mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
729 int idx, u8 *mac, struct station_info *sinfo)
730 {
731 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
732
733 if (!priv->media_connected || idx)
734 return -ENOENT;
735
736 memcpy(mac, priv->cfg_bssid, ETH_ALEN);
737
738 return mwifiex_dump_station_info(priv, sinfo);
739 }
740
741 /* Supported rates to be advertised to the cfg80211 */
742
743 static struct ieee80211_rate mwifiex_rates[] = {
744 {.bitrate = 10, .hw_value = 2, },
745 {.bitrate = 20, .hw_value = 4, },
746 {.bitrate = 55, .hw_value = 11, },
747 {.bitrate = 110, .hw_value = 22, },
748 {.bitrate = 60, .hw_value = 12, },
749 {.bitrate = 90, .hw_value = 18, },
750 {.bitrate = 120, .hw_value = 24, },
751 {.bitrate = 180, .hw_value = 36, },
752 {.bitrate = 240, .hw_value = 48, },
753 {.bitrate = 360, .hw_value = 72, },
754 {.bitrate = 480, .hw_value = 96, },
755 {.bitrate = 540, .hw_value = 108, },
756 };
757
758 /* Channel definitions to be advertised to cfg80211 */
759
760 static struct ieee80211_channel mwifiex_channels_2ghz[] = {
761 {.center_freq = 2412, .hw_value = 1, },
762 {.center_freq = 2417, .hw_value = 2, },
763 {.center_freq = 2422, .hw_value = 3, },
764 {.center_freq = 2427, .hw_value = 4, },
765 {.center_freq = 2432, .hw_value = 5, },
766 {.center_freq = 2437, .hw_value = 6, },
767 {.center_freq = 2442, .hw_value = 7, },
768 {.center_freq = 2447, .hw_value = 8, },
769 {.center_freq = 2452, .hw_value = 9, },
770 {.center_freq = 2457, .hw_value = 10, },
771 {.center_freq = 2462, .hw_value = 11, },
772 {.center_freq = 2467, .hw_value = 12, },
773 {.center_freq = 2472, .hw_value = 13, },
774 {.center_freq = 2484, .hw_value = 14, },
775 };
776
777 static struct ieee80211_supported_band mwifiex_band_2ghz = {
778 .channels = mwifiex_channels_2ghz,
779 .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
780 .bitrates = mwifiex_rates,
781 .n_bitrates = ARRAY_SIZE(mwifiex_rates),
782 };
783
784 static struct ieee80211_channel mwifiex_channels_5ghz[] = {
785 {.center_freq = 5040, .hw_value = 8, },
786 {.center_freq = 5060, .hw_value = 12, },
787 {.center_freq = 5080, .hw_value = 16, },
788 {.center_freq = 5170, .hw_value = 34, },
789 {.center_freq = 5190, .hw_value = 38, },
790 {.center_freq = 5210, .hw_value = 42, },
791 {.center_freq = 5230, .hw_value = 46, },
792 {.center_freq = 5180, .hw_value = 36, },
793 {.center_freq = 5200, .hw_value = 40, },
794 {.center_freq = 5220, .hw_value = 44, },
795 {.center_freq = 5240, .hw_value = 48, },
796 {.center_freq = 5260, .hw_value = 52, },
797 {.center_freq = 5280, .hw_value = 56, },
798 {.center_freq = 5300, .hw_value = 60, },
799 {.center_freq = 5320, .hw_value = 64, },
800 {.center_freq = 5500, .hw_value = 100, },
801 {.center_freq = 5520, .hw_value = 104, },
802 {.center_freq = 5540, .hw_value = 108, },
803 {.center_freq = 5560, .hw_value = 112, },
804 {.center_freq = 5580, .hw_value = 116, },
805 {.center_freq = 5600, .hw_value = 120, },
806 {.center_freq = 5620, .hw_value = 124, },
807 {.center_freq = 5640, .hw_value = 128, },
808 {.center_freq = 5660, .hw_value = 132, },
809 {.center_freq = 5680, .hw_value = 136, },
810 {.center_freq = 5700, .hw_value = 140, },
811 {.center_freq = 5745, .hw_value = 149, },
812 {.center_freq = 5765, .hw_value = 153, },
813 {.center_freq = 5785, .hw_value = 157, },
814 {.center_freq = 5805, .hw_value = 161, },
815 {.center_freq = 5825, .hw_value = 165, },
816 };
817
818 static struct ieee80211_supported_band mwifiex_band_5ghz = {
819 .channels = mwifiex_channels_5ghz,
820 .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
821 .bitrates = mwifiex_rates + 4,
822 .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
823 };
824
825
826 /* Supported crypto cipher suits to be advertised to cfg80211 */
827
828 static const u32 mwifiex_cipher_suites[] = {
829 WLAN_CIPHER_SUITE_WEP40,
830 WLAN_CIPHER_SUITE_WEP104,
831 WLAN_CIPHER_SUITE_TKIP,
832 WLAN_CIPHER_SUITE_CCMP,
833 };
834
835 /*
836 * CFG802.11 operation handler for setting bit rates.
837 *
838 * Function selects legacy bang B/G/BG from corresponding bitrates selection.
839 * Currently only 2.4GHz band is supported.
840 */
841 static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
842 struct net_device *dev,
843 const u8 *peer,
844 const struct cfg80211_bitrate_mask *mask)
845 {
846 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
847 int index = 0, mode = 0, i;
848 struct mwifiex_adapter *adapter = priv->adapter;
849
850 /* Currently only 2.4GHz is supported */
851 for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
852 /*
853 * Rates below 6 Mbps in the table are CCK rates; 802.11b
854 * and from 6 they are OFDM; 802.11G
855 */
856 if (mwifiex_rates[i].bitrate == 60) {
857 index = 1 << i;
858 break;
859 }
860 }
861
862 if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
863 mode = BAND_B;
864 } else {
865 mode = BAND_G;
866 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
867 mode |= BAND_B;
868 }
869
870 if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
871 adapter->config_bands = mode;
872 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
873 adapter->adhoc_start_band = mode;
874 adapter->adhoc_11n_enabled = false;
875 }
876 }
877 adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
878 adapter->channel_type = NL80211_CHAN_NO_HT;
879
880 wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
881 (mode & BAND_B) ? "b" : "", (mode & BAND_G) ? "g" : "");
882
883 return 0;
884 }
885
886 /*
887 * CFG802.11 operation handler for connection quality monitoring.
888 *
889 * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
890 * events to FW.
891 */
892 static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
893 struct net_device *dev,
894 s32 rssi_thold, u32 rssi_hyst)
895 {
896 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
897 struct mwifiex_ds_misc_subsc_evt subsc_evt;
898
899 priv->cqm_rssi_thold = rssi_thold;
900 priv->cqm_rssi_hyst = rssi_hyst;
901
902 memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
903 subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
904
905 /* Subscribe/unsubscribe low and high rssi events */
906 if (rssi_thold && rssi_hyst) {
907 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
908 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
909 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
910 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
911 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
912 return mwifiex_send_cmd_sync(priv,
913 HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
914 0, 0, &subsc_evt);
915 } else {
916 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
917 return mwifiex_send_cmd_sync(priv,
918 HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
919 0, 0, &subsc_evt);
920 }
921
922 return 0;
923 }
924
925 /* cfg80211 operation handler for stop ap.
926 * Function stops BSS running at uAP interface.
927 */
928 static int mwifiex_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
929 {
930 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
931
932 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
933 HostCmd_ACT_GEN_SET, 0, NULL)) {
934 wiphy_err(wiphy, "Failed to stop the BSS\n");
935 return -1;
936 }
937
938 return 0;
939 }
940
941 /* cfg80211 operation handler for start_ap.
942 * Function sets beacon period, DTIM period, SSID and security into
943 * AP config structure.
944 * AP is configured with these settings and BSS is started.
945 */
946 static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy,
947 struct net_device *dev,
948 struct cfg80211_ap_settings *params)
949 {
950 struct mwifiex_uap_bss_param *bss_cfg;
951 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
952
953 if (priv->bss_type != MWIFIEX_BSS_TYPE_UAP)
954 return -1;
955
956 bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param), GFP_KERNEL);
957 if (!bss_cfg)
958 return -ENOMEM;
959
960 mwifiex_set_sys_config_invalid_data(bss_cfg);
961
962 if (params->beacon_interval)
963 bss_cfg->beacon_period = params->beacon_interval;
964 if (params->dtim_period)
965 bss_cfg->dtim_period = params->dtim_period;
966
967 if (params->ssid && params->ssid_len) {
968 memcpy(bss_cfg->ssid.ssid, params->ssid, params->ssid_len);
969 bss_cfg->ssid.ssid_len = params->ssid_len;
970 }
971
972 if (mwifiex_set_secure_params(priv, bss_cfg, params)) {
973 kfree(bss_cfg);
974 wiphy_err(wiphy, "Failed to parse secuirty parameters!\n");
975 return -1;
976 }
977
978 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
979 HostCmd_ACT_GEN_SET, 0, NULL)) {
980 wiphy_err(wiphy, "Failed to stop the BSS\n");
981 kfree(bss_cfg);
982 return -1;
983 }
984
985 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG,
986 HostCmd_ACT_GEN_SET,
987 UAP_BSS_PARAMS_I, bss_cfg)) {
988 wiphy_err(wiphy, "Failed to set the SSID\n");
989 kfree(bss_cfg);
990 return -1;
991 }
992
993 kfree(bss_cfg);
994
995 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_BSS_START,
996 HostCmd_ACT_GEN_SET, 0, NULL)) {
997 wiphy_err(wiphy, "Failed to start the BSS\n");
998 return -1;
999 }
1000
1001 return 0;
1002 }
1003
1004 /*
1005 * CFG802.11 operation handler for disconnection request.
1006 *
1007 * This function does not work when there is already a disconnection
1008 * procedure going on.
1009 */
1010 static int
1011 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
1012 u16 reason_code)
1013 {
1014 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1015
1016 if (mwifiex_deauthenticate(priv, NULL))
1017 return -EFAULT;
1018
1019 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
1020 " reason code %d\n", priv->cfg_bssid, reason_code);
1021
1022 memset(priv->cfg_bssid, 0, ETH_ALEN);
1023
1024 return 0;
1025 }
1026
1027 /*
1028 * This function informs the CFG802.11 subsystem of a new IBSS.
1029 *
1030 * The following information are sent to the CFG802.11 subsystem
1031 * to register the new IBSS. If we do not register the new IBSS,
1032 * a kernel panic will result.
1033 * - SSID
1034 * - SSID length
1035 * - BSSID
1036 * - Channel
1037 */
1038 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1039 {
1040 struct ieee80211_channel *chan;
1041 struct mwifiex_bss_info bss_info;
1042 struct cfg80211_bss *bss;
1043 int ie_len;
1044 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1045 enum ieee80211_band band;
1046
1047 if (mwifiex_get_bss_info(priv, &bss_info))
1048 return -1;
1049
1050 ie_buf[0] = WLAN_EID_SSID;
1051 ie_buf[1] = bss_info.ssid.ssid_len;
1052
1053 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1054 &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1055 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1056
1057 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1058 chan = __ieee80211_get_channel(priv->wdev->wiphy,
1059 ieee80211_channel_to_frequency(bss_info.bss_chan,
1060 band));
1061
1062 bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1063 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1064 0, ie_buf, ie_len, 0, GFP_KERNEL);
1065 cfg80211_put_bss(bss);
1066 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1067
1068 return 0;
1069 }
1070
1071 /*
1072 * This function connects with a BSS.
1073 *
1074 * This function handles both Infra and Ad-Hoc modes. It also performs
1075 * validity checking on the provided parameters, disconnects from the
1076 * current BSS (if any), sets up the association/scan parameters,
1077 * including security settings, and performs specific SSID scan before
1078 * trying to connect.
1079 *
1080 * For Infra mode, the function returns failure if the specified SSID
1081 * is not found in scan table. However, for Ad-Hoc mode, it can create
1082 * the IBSS if it does not exist. On successful completion in either case,
1083 * the function notifies the CFG802.11 subsystem of the new BSS connection.
1084 */
1085 static int
1086 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1087 u8 *bssid, int mode, struct ieee80211_channel *channel,
1088 struct cfg80211_connect_params *sme, bool privacy)
1089 {
1090 struct cfg80211_ssid req_ssid;
1091 int ret, auth_type = 0;
1092 struct cfg80211_bss *bss = NULL;
1093 u8 is_scanning_required = 0;
1094
1095 memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1096
1097 req_ssid.ssid_len = ssid_len;
1098 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1099 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1100 return -EINVAL;
1101 }
1102
1103 memcpy(req_ssid.ssid, ssid, ssid_len);
1104 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1105 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1106 return -EINVAL;
1107 }
1108
1109 /* disconnect before try to associate */
1110 mwifiex_deauthenticate(priv, NULL);
1111
1112 if (channel)
1113 ret = mwifiex_set_rf_channel(priv, channel,
1114 priv->adapter->channel_type);
1115
1116 /* As this is new association, clear locally stored
1117 * keys and security related flags */
1118 priv->sec_info.wpa_enabled = false;
1119 priv->sec_info.wpa2_enabled = false;
1120 priv->wep_key_curr_index = 0;
1121 priv->sec_info.encryption_mode = 0;
1122 priv->sec_info.is_authtype_auto = 0;
1123 ret = mwifiex_set_encode(priv, NULL, 0, 0, NULL, 1);
1124
1125 if (mode == NL80211_IFTYPE_ADHOC) {
1126 /* "privacy" is set only for ad-hoc mode */
1127 if (privacy) {
1128 /*
1129 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1130 * the firmware can find a matching network from the
1131 * scan. The cfg80211 does not give us the encryption
1132 * mode at this stage so just setting it to WEP here.
1133 */
1134 priv->sec_info.encryption_mode =
1135 WLAN_CIPHER_SUITE_WEP104;
1136 priv->sec_info.authentication_mode =
1137 NL80211_AUTHTYPE_OPEN_SYSTEM;
1138 }
1139
1140 goto done;
1141 }
1142
1143 /* Now handle infra mode. "sme" is valid for infra mode only */
1144 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1145 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1146 priv->sec_info.is_authtype_auto = 1;
1147 } else {
1148 auth_type = sme->auth_type;
1149 }
1150
1151 if (sme->crypto.n_ciphers_pairwise) {
1152 priv->sec_info.encryption_mode =
1153 sme->crypto.ciphers_pairwise[0];
1154 priv->sec_info.authentication_mode = auth_type;
1155 }
1156
1157 if (sme->crypto.cipher_group) {
1158 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1159 priv->sec_info.authentication_mode = auth_type;
1160 }
1161 if (sme->ie)
1162 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1163
1164 if (sme->key) {
1165 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1166 dev_dbg(priv->adapter->dev,
1167 "info: setting wep encryption"
1168 " with key len %d\n", sme->key_len);
1169 priv->wep_key_curr_index = sme->key_idx;
1170 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1171 sme->key_idx, NULL, 0);
1172 }
1173 }
1174 done:
1175 /*
1176 * Scan entries are valid for some time (15 sec). So we can save one
1177 * active scan time if we just try cfg80211_get_bss first. If it fails
1178 * then request scan and cfg80211_get_bss() again for final output.
1179 */
1180 while (1) {
1181 if (is_scanning_required) {
1182 /* Do specific SSID scanning */
1183 if (mwifiex_request_scan(priv, &req_ssid)) {
1184 dev_err(priv->adapter->dev, "scan error\n");
1185 return -EFAULT;
1186 }
1187 }
1188
1189 /* Find the BSS we want using available scan results */
1190 if (mode == NL80211_IFTYPE_ADHOC)
1191 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1192 bssid, ssid, ssid_len,
1193 WLAN_CAPABILITY_IBSS,
1194 WLAN_CAPABILITY_IBSS);
1195 else
1196 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1197 bssid, ssid, ssid_len,
1198 WLAN_CAPABILITY_ESS,
1199 WLAN_CAPABILITY_ESS);
1200
1201 if (!bss) {
1202 if (is_scanning_required) {
1203 dev_warn(priv->adapter->dev,
1204 "assoc: requested bss not found in scan results\n");
1205 break;
1206 }
1207 is_scanning_required = 1;
1208 } else {
1209 dev_dbg(priv->adapter->dev,
1210 "info: trying to associate to '%s' bssid %pM\n",
1211 (char *) req_ssid.ssid, bss->bssid);
1212 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1213 break;
1214 }
1215 }
1216
1217 if (mwifiex_bss_start(priv, bss, &req_ssid))
1218 return -EFAULT;
1219
1220 if (mode == NL80211_IFTYPE_ADHOC) {
1221 /* Inform the BSS information to kernel, otherwise
1222 * kernel will give a panic after successful assoc */
1223 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1224 return -EFAULT;
1225 }
1226
1227 return ret;
1228 }
1229
1230 /*
1231 * CFG802.11 operation handler for association request.
1232 *
1233 * This function does not work when the current mode is set to Ad-Hoc, or
1234 * when there is already an association procedure going on. The given BSS
1235 * information is used to associate.
1236 */
1237 static int
1238 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1239 struct cfg80211_connect_params *sme)
1240 {
1241 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1242 int ret = 0;
1243
1244 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1245 wiphy_err(wiphy, "received infra assoc request "
1246 "when station is in ibss mode\n");
1247 goto done;
1248 }
1249
1250 if (priv->bss_mode == NL80211_IFTYPE_AP) {
1251 wiphy_err(wiphy, "skip association request for AP interface\n");
1252 goto done;
1253 }
1254
1255 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1256 (char *) sme->ssid, sme->bssid);
1257
1258 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1259 priv->bss_mode, sme->channel, sme, 0);
1260 done:
1261 if (!ret) {
1262 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1263 NULL, 0, WLAN_STATUS_SUCCESS,
1264 GFP_KERNEL);
1265 dev_dbg(priv->adapter->dev,
1266 "info: associated to bssid %pM successfully\n",
1267 priv->cfg_bssid);
1268 } else {
1269 dev_dbg(priv->adapter->dev,
1270 "info: association to bssid %pM failed\n",
1271 priv->cfg_bssid);
1272 memset(priv->cfg_bssid, 0, ETH_ALEN);
1273 }
1274
1275 return ret;
1276 }
1277
1278 /*
1279 * CFG802.11 operation handler to join an IBSS.
1280 *
1281 * This function does not work in any mode other than Ad-Hoc, or if
1282 * a join operation is already in progress.
1283 */
1284 static int
1285 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1286 struct cfg80211_ibss_params *params)
1287 {
1288 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1289 int ret = 0;
1290
1291 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1292 wiphy_err(wiphy, "request to join ibss received "
1293 "when station is not in ibss mode\n");
1294 goto done;
1295 }
1296
1297 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1298 (char *) params->ssid, params->bssid);
1299
1300 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1301 params->bssid, priv->bss_mode,
1302 params->channel, NULL, params->privacy);
1303 done:
1304 if (!ret) {
1305 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1306 dev_dbg(priv->adapter->dev,
1307 "info: joined/created adhoc network with bssid"
1308 " %pM successfully\n", priv->cfg_bssid);
1309 } else {
1310 dev_dbg(priv->adapter->dev,
1311 "info: failed creating/joining adhoc network\n");
1312 }
1313
1314 return ret;
1315 }
1316
1317 /*
1318 * CFG802.11 operation handler to leave an IBSS.
1319 *
1320 * This function does not work if a leave operation is
1321 * already in progress.
1322 */
1323 static int
1324 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1325 {
1326 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1327
1328 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1329 priv->cfg_bssid);
1330 if (mwifiex_deauthenticate(priv, NULL))
1331 return -EFAULT;
1332
1333 memset(priv->cfg_bssid, 0, ETH_ALEN);
1334
1335 return 0;
1336 }
1337
1338 /*
1339 * CFG802.11 operation handler for scan request.
1340 *
1341 * This function issues a scan request to the firmware based upon
1342 * the user specified scan configuration. On successfull completion,
1343 * it also informs the results.
1344 */
1345 static int
1346 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1347 struct cfg80211_scan_request *request)
1348 {
1349 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1350 int i;
1351 struct ieee80211_channel *chan;
1352
1353 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1354
1355 priv->scan_request = request;
1356
1357 priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1358 GFP_KERNEL);
1359 if (!priv->user_scan_cfg) {
1360 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1361 return -ENOMEM;
1362 }
1363
1364 priv->user_scan_cfg->num_ssids = request->n_ssids;
1365 priv->user_scan_cfg->ssid_list = request->ssids;
1366
1367 if (request->ie && request->ie_len) {
1368 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1369 if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1370 continue;
1371 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1372 memcpy(&priv->vs_ie[i].ie, request->ie,
1373 request->ie_len);
1374 break;
1375 }
1376 }
1377
1378 for (i = 0; i < request->n_channels; i++) {
1379 chan = request->channels[i];
1380 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1381 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1382
1383 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1384 priv->user_scan_cfg->chan_list[i].scan_type =
1385 MWIFIEX_SCAN_TYPE_PASSIVE;
1386 else
1387 priv->user_scan_cfg->chan_list[i].scan_type =
1388 MWIFIEX_SCAN_TYPE_ACTIVE;
1389
1390 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1391 }
1392 if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1393 return -EFAULT;
1394
1395 if (request->ie && request->ie_len) {
1396 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1397 if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1398 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1399 memset(&priv->vs_ie[i].ie, 0,
1400 MWIFIEX_MAX_VSIE_LEN);
1401 }
1402 }
1403 }
1404 return 0;
1405 }
1406
1407 /*
1408 * This function sets up the CFG802.11 specific HT capability fields
1409 * with default values.
1410 *
1411 * The following default values are set -
1412 * - HT Supported = True
1413 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1414 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1415 * - HT Capabilities supported by firmware
1416 * - MCS information, Rx mask = 0xff
1417 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1418 */
1419 static void
1420 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1421 struct mwifiex_private *priv)
1422 {
1423 int rx_mcs_supp;
1424 struct ieee80211_mcs_info mcs_set;
1425 u8 *mcs = (u8 *)&mcs_set;
1426 struct mwifiex_adapter *adapter = priv->adapter;
1427
1428 ht_info->ht_supported = true;
1429 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1430 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1431
1432 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1433
1434 /* Fill HT capability information */
1435 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1436 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1437 else
1438 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1439
1440 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1441 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1442 else
1443 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1444
1445 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1446 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1447 else
1448 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1449
1450 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1451 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1452 else
1453 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1454
1455 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1456 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1457 else
1458 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1459
1460 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1461 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1462
1463 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1464 /* Set MCS for 1x1 */
1465 memset(mcs, 0xff, rx_mcs_supp);
1466 /* Clear all the other values */
1467 memset(&mcs[rx_mcs_supp], 0,
1468 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1469 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1470 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1471 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1472 SETHT_MCS32(mcs_set.rx_mask);
1473
1474 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1475
1476 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1477 }
1478
1479 /*
1480 * create a new virtual interface with the given name
1481 */
1482 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1483 char *name,
1484 enum nl80211_iftype type,
1485 u32 *flags,
1486 struct vif_params *params)
1487 {
1488 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1489 struct mwifiex_private *priv;
1490 struct net_device *dev;
1491 void *mdev_priv;
1492 struct wireless_dev *wdev;
1493
1494 if (!adapter)
1495 return NULL;
1496
1497 switch (type) {
1498 case NL80211_IFTYPE_UNSPECIFIED:
1499 case NL80211_IFTYPE_STATION:
1500 case NL80211_IFTYPE_ADHOC:
1501 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1502 if (priv->bss_mode) {
1503 wiphy_err(wiphy,
1504 "cannot create multiple sta/adhoc ifaces\n");
1505 return NULL;
1506 }
1507
1508 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1509 if (!wdev)
1510 return NULL;
1511
1512 wdev->wiphy = wiphy;
1513 priv->wdev = wdev;
1514 wdev->iftype = NL80211_IFTYPE_STATION;
1515
1516 if (type == NL80211_IFTYPE_UNSPECIFIED)
1517 priv->bss_mode = NL80211_IFTYPE_STATION;
1518 else
1519 priv->bss_mode = type;
1520
1521 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1522 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1523 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
1524 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1525 priv->bss_num = 0;
1526
1527 break;
1528 case NL80211_IFTYPE_AP:
1529 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
1530
1531 if (priv->bss_mode) {
1532 wiphy_err(wiphy, "Can't create multiple AP interfaces");
1533 return NULL;
1534 }
1535
1536 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1537 if (!wdev)
1538 return NULL;
1539
1540 priv->wdev = wdev;
1541 wdev->wiphy = wiphy;
1542 wdev->iftype = NL80211_IFTYPE_AP;
1543
1544 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
1545 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1546 priv->bss_priority = MWIFIEX_BSS_ROLE_UAP;
1547 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
1548 priv->bss_started = 0;
1549 priv->bss_num = 0;
1550 priv->bss_mode = type;
1551
1552 break;
1553 default:
1554 wiphy_err(wiphy, "type not supported\n");
1555 return NULL;
1556 }
1557
1558 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1559 ether_setup, 1);
1560 if (!dev) {
1561 wiphy_err(wiphy, "no memory available for netdevice\n");
1562 goto error;
1563 }
1564
1565 mwifiex_init_priv_params(priv, dev);
1566 priv->netdev = dev;
1567
1568 mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1569
1570 if (adapter->config_bands & BAND_A)
1571 mwifiex_setup_ht_caps(
1572 &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1573
1574 dev_net_set(dev, wiphy_net(wiphy));
1575 dev->ieee80211_ptr = priv->wdev;
1576 dev->ieee80211_ptr->iftype = priv->bss_mode;
1577 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1578 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1579 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1580
1581 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1582 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1583 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1584
1585 mdev_priv = netdev_priv(dev);
1586 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1587
1588 SET_NETDEV_DEV(dev, adapter->dev);
1589
1590 /* Register network device */
1591 if (register_netdevice(dev)) {
1592 wiphy_err(wiphy, "cannot register virtual network device\n");
1593 goto error;
1594 }
1595
1596 sema_init(&priv->async_sem, 1);
1597 priv->scan_pending_on_block = false;
1598
1599 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1600
1601 #ifdef CONFIG_DEBUG_FS
1602 mwifiex_dev_debugfs_init(priv);
1603 #endif
1604 return dev;
1605 error:
1606 if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1607 free_netdev(dev);
1608 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1609
1610 return NULL;
1611 }
1612 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1613
1614 /*
1615 * del_virtual_intf: remove the virtual interface determined by dev
1616 */
1617 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1618 {
1619 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1620
1621 #ifdef CONFIG_DEBUG_FS
1622 mwifiex_dev_debugfs_remove(priv);
1623 #endif
1624
1625 if (!netif_queue_stopped(priv->netdev))
1626 netif_stop_queue(priv->netdev);
1627
1628 if (netif_carrier_ok(priv->netdev))
1629 netif_carrier_off(priv->netdev);
1630
1631 if (dev->reg_state == NETREG_REGISTERED)
1632 unregister_netdevice(dev);
1633
1634 if (dev->reg_state == NETREG_UNREGISTERED)
1635 free_netdev(dev);
1636
1637 /* Clear the priv in adapter */
1638 priv->netdev = NULL;
1639
1640 priv->media_connected = false;
1641
1642 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1643
1644 return 0;
1645 }
1646 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1647
1648 /* station cfg80211 operations */
1649 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1650 .add_virtual_intf = mwifiex_add_virtual_intf,
1651 .del_virtual_intf = mwifiex_del_virtual_intf,
1652 .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1653 .scan = mwifiex_cfg80211_scan,
1654 .connect = mwifiex_cfg80211_connect,
1655 .disconnect = mwifiex_cfg80211_disconnect,
1656 .get_station = mwifiex_cfg80211_get_station,
1657 .dump_station = mwifiex_cfg80211_dump_station,
1658 .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1659 .set_channel = mwifiex_cfg80211_set_channel,
1660 .join_ibss = mwifiex_cfg80211_join_ibss,
1661 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1662 .add_key = mwifiex_cfg80211_add_key,
1663 .del_key = mwifiex_cfg80211_del_key,
1664 .set_default_key = mwifiex_cfg80211_set_default_key,
1665 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1666 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1667 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1668 .start_ap = mwifiex_cfg80211_start_ap,
1669 .stop_ap = mwifiex_cfg80211_stop_ap,
1670 .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1671 };
1672
1673 /*
1674 * This function registers the device with CFG802.11 subsystem.
1675 *
1676 * The function creates the wireless device/wiphy, populates it with
1677 * default parameters and handler function pointers, and finally
1678 * registers the device.
1679 */
1680
1681 int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
1682 {
1683 int ret;
1684 void *wdev_priv;
1685 struct wiphy *wiphy;
1686 struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1687 u8 *country_code;
1688
1689 /* create a new wiphy for use with cfg80211 */
1690 wiphy = wiphy_new(&mwifiex_cfg80211_ops,
1691 sizeof(struct mwifiex_adapter *));
1692 if (!wiphy) {
1693 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
1694 return -ENOMEM;
1695 }
1696 wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
1697 wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1698 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1699 BIT(NL80211_IFTYPE_ADHOC) |
1700 BIT(NL80211_IFTYPE_AP);
1701
1702 wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1703 if (adapter->config_bands & BAND_A)
1704 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1705 else
1706 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1707
1708 wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
1709 wiphy->n_iface_combinations = 1;
1710
1711 /* Initialize cipher suits */
1712 wiphy->cipher_suites = mwifiex_cipher_suites;
1713 wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1714
1715 memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1716 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1717 wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME | WIPHY_FLAG_CUSTOM_REGULATORY;
1718
1719 /* Reserve space for mwifiex specific private data for BSS */
1720 wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1721
1722 wiphy->reg_notifier = mwifiex_reg_notifier;
1723
1724 /* Set struct mwifiex_adapter pointer in wiphy_priv */
1725 wdev_priv = wiphy_priv(wiphy);
1726 *(unsigned long *)wdev_priv = (unsigned long)adapter;
1727
1728 set_wiphy_dev(wiphy, (struct device *)priv->adapter->dev);
1729
1730 ret = wiphy_register(wiphy);
1731 if (ret < 0) {
1732 dev_err(adapter->dev,
1733 "%s: wiphy_register failed: %d\n", __func__, ret);
1734 wiphy_free(wiphy);
1735 return ret;
1736 }
1737 country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1738 if (country_code && regulatory_hint(wiphy, country_code))
1739 dev_err(adapter->dev, "regulatory_hint() failed\n");
1740
1741 adapter->wiphy = wiphy;
1742 return ret;
1743 }
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