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mwifiex: add AP event handling framework
[deliverable/linux.git] / drivers / net / wireless / mwifiex / cfg80211.c
1 /*
2 * Marvell Wireless LAN device driver: CFG80211
3 *
4 * Copyright (C) 2011, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #include "cfg80211.h"
21 #include "main.h"
22
23 static const struct ieee80211_iface_limit mwifiex_ap_sta_limits[] = {
24 {
25 .max = 1, .types = BIT(NL80211_IFTYPE_STATION),
26 },
27 {
28 .max = 1, .types = BIT(NL80211_IFTYPE_AP),
29 },
30 };
31
32 static const struct ieee80211_iface_combination mwifiex_iface_comb_ap_sta = {
33 .limits = mwifiex_ap_sta_limits,
34 .num_different_channels = 1,
35 .n_limits = ARRAY_SIZE(mwifiex_ap_sta_limits),
36 .max_interfaces = MWIFIEX_MAX_BSS_NUM,
37 .beacon_int_infra_match = true,
38 };
39
40 /*
41 * This function maps the nl802.11 channel type into driver channel type.
42 *
43 * The mapping is as follows -
44 * NL80211_CHAN_NO_HT -> IEEE80211_HT_PARAM_CHA_SEC_NONE
45 * NL80211_CHAN_HT20 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
46 * NL80211_CHAN_HT40PLUS -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
47 * NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
48 * Others -> IEEE80211_HT_PARAM_CHA_SEC_NONE
49 */
50 static u8
51 mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type
52 channel_type)
53 {
54 switch (channel_type) {
55 case NL80211_CHAN_NO_HT:
56 case NL80211_CHAN_HT20:
57 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
58 case NL80211_CHAN_HT40PLUS:
59 return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
60 case NL80211_CHAN_HT40MINUS:
61 return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
62 default:
63 return IEEE80211_HT_PARAM_CHA_SEC_NONE;
64 }
65 }
66
67 /*
68 * This function checks whether WEP is set.
69 */
70 static int
71 mwifiex_is_alg_wep(u32 cipher)
72 {
73 switch (cipher) {
74 case WLAN_CIPHER_SUITE_WEP40:
75 case WLAN_CIPHER_SUITE_WEP104:
76 return 1;
77 default:
78 break;
79 }
80
81 return 0;
82 }
83
84 /*
85 * This function retrieves the private structure from kernel wiphy structure.
86 */
87 static void *mwifiex_cfg80211_get_adapter(struct wiphy *wiphy)
88 {
89 return (void *) (*(unsigned long *) wiphy_priv(wiphy));
90 }
91
92 /*
93 * CFG802.11 operation handler to delete a network key.
94 */
95 static int
96 mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
97 u8 key_index, bool pairwise, const u8 *mac_addr)
98 {
99 struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
100 const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
101 const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
102
103 if (mwifiex_set_encode(priv, NULL, 0, key_index, peer_mac, 1)) {
104 wiphy_err(wiphy, "deleting the crypto keys\n");
105 return -EFAULT;
106 }
107
108 wiphy_dbg(wiphy, "info: crypto keys deleted\n");
109 return 0;
110 }
111
112 /*
113 * CFG802.11 operation handler to set Tx power.
114 */
115 static int
116 mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
117 enum nl80211_tx_power_setting type,
118 int mbm)
119 {
120 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
121 struct mwifiex_private *priv;
122 struct mwifiex_power_cfg power_cfg;
123 int dbm = MBM_TO_DBM(mbm);
124
125 if (type == NL80211_TX_POWER_FIXED) {
126 power_cfg.is_power_auto = 0;
127 power_cfg.power_level = dbm;
128 } else {
129 power_cfg.is_power_auto = 1;
130 }
131
132 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
133
134 return mwifiex_set_tx_power(priv, &power_cfg);
135 }
136
137 /*
138 * CFG802.11 operation handler to set Power Save option.
139 *
140 * The timeout value, if provided, is currently ignored.
141 */
142 static int
143 mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
144 struct net_device *dev,
145 bool enabled, int timeout)
146 {
147 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
148 u32 ps_mode;
149
150 if (timeout)
151 wiphy_dbg(wiphy,
152 "info: ignore timeout value for IEEE Power Save\n");
153
154 ps_mode = enabled;
155
156 return mwifiex_drv_set_power(priv, &ps_mode);
157 }
158
159 /*
160 * CFG802.11 operation handler to set the default network key.
161 */
162 static int
163 mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
164 u8 key_index, bool unicast,
165 bool multicast)
166 {
167 struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
168
169 /* Return if WEP key not configured */
170 if (!priv->sec_info.wep_enabled)
171 return 0;
172
173 if (mwifiex_set_encode(priv, NULL, 0, key_index, NULL, 0)) {
174 wiphy_err(wiphy, "set default Tx key index\n");
175 return -EFAULT;
176 }
177
178 return 0;
179 }
180
181 /*
182 * CFG802.11 operation handler to add a network key.
183 */
184 static int
185 mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
186 u8 key_index, bool pairwise, const u8 *mac_addr,
187 struct key_params *params)
188 {
189 struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
190 const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
191 const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
192
193 if (mwifiex_set_encode(priv, params->key, params->key_len,
194 key_index, peer_mac, 0)) {
195 wiphy_err(wiphy, "crypto keys added\n");
196 return -EFAULT;
197 }
198
199 return 0;
200 }
201
202 /*
203 * This function sends domain information to the firmware.
204 *
205 * The following information are passed to the firmware -
206 * - Country codes
207 * - Sub bands (first channel, number of channels, maximum Tx power)
208 */
209 static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
210 {
211 u8 no_of_triplet = 0;
212 struct ieee80211_country_ie_triplet *t;
213 u8 no_of_parsed_chan = 0;
214 u8 first_chan = 0, next_chan = 0, max_pwr = 0;
215 u8 i, flag = 0;
216 enum ieee80211_band band;
217 struct ieee80211_supported_band *sband;
218 struct ieee80211_channel *ch;
219 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
220 struct mwifiex_private *priv;
221 struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;
222
223 /* Set country code */
224 domain_info->country_code[0] = adapter->country_code[0];
225 domain_info->country_code[1] = adapter->country_code[1];
226 domain_info->country_code[2] = ' ';
227
228 band = mwifiex_band_to_radio_type(adapter->config_bands);
229 if (!wiphy->bands[band]) {
230 wiphy_err(wiphy, "11D: setting domain info in FW\n");
231 return -1;
232 }
233
234 sband = wiphy->bands[band];
235
236 for (i = 0; i < sband->n_channels ; i++) {
237 ch = &sband->channels[i];
238 if (ch->flags & IEEE80211_CHAN_DISABLED)
239 continue;
240
241 if (!flag) {
242 flag = 1;
243 first_chan = (u32) ch->hw_value;
244 next_chan = first_chan;
245 max_pwr = ch->max_power;
246 no_of_parsed_chan = 1;
247 continue;
248 }
249
250 if (ch->hw_value == next_chan + 1 &&
251 ch->max_power == max_pwr) {
252 next_chan++;
253 no_of_parsed_chan++;
254 } else {
255 t = &domain_info->triplet[no_of_triplet];
256 t->chans.first_channel = first_chan;
257 t->chans.num_channels = no_of_parsed_chan;
258 t->chans.max_power = max_pwr;
259 no_of_triplet++;
260 first_chan = (u32) ch->hw_value;
261 next_chan = first_chan;
262 max_pwr = ch->max_power;
263 no_of_parsed_chan = 1;
264 }
265 }
266
267 if (flag) {
268 t = &domain_info->triplet[no_of_triplet];
269 t->chans.first_channel = first_chan;
270 t->chans.num_channels = no_of_parsed_chan;
271 t->chans.max_power = max_pwr;
272 no_of_triplet++;
273 }
274
275 domain_info->no_of_triplet = no_of_triplet;
276
277 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
278
279 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
280 HostCmd_ACT_GEN_SET, 0, NULL)) {
281 wiphy_err(wiphy, "11D: setting domain info in FW\n");
282 return -1;
283 }
284
285 return 0;
286 }
287
288 /*
289 * CFG802.11 regulatory domain callback function.
290 *
291 * This function is called when the regulatory domain is changed due to the
292 * following reasons -
293 * - Set by driver
294 * - Set by system core
295 * - Set by user
296 * - Set bt Country IE
297 */
298 static int mwifiex_reg_notifier(struct wiphy *wiphy,
299 struct regulatory_request *request)
300 {
301 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
302
303 wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for %c%c\n",
304 request->alpha2[0], request->alpha2[1]);
305
306 memcpy(adapter->country_code, request->alpha2, sizeof(request->alpha2));
307
308 switch (request->initiator) {
309 case NL80211_REGDOM_SET_BY_DRIVER:
310 case NL80211_REGDOM_SET_BY_CORE:
311 case NL80211_REGDOM_SET_BY_USER:
312 break;
313 /* Todo: apply driver specific changes in channel flags based
314 on the request initiator if necessary. */
315 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
316 break;
317 }
318 mwifiex_send_domain_info_cmd_fw(wiphy);
319
320 return 0;
321 }
322
323 /*
324 * This function sets the RF channel.
325 *
326 * This function creates multiple IOCTL requests, populates them accordingly
327 * and issues them to set the band/channel and frequency.
328 */
329 static int
330 mwifiex_set_rf_channel(struct mwifiex_private *priv,
331 struct ieee80211_channel *chan,
332 enum nl80211_channel_type channel_type)
333 {
334 struct mwifiex_chan_freq_power cfp;
335 u32 config_bands = 0;
336 struct wiphy *wiphy = priv->wdev->wiphy;
337 struct mwifiex_adapter *adapter = priv->adapter;
338
339 if (chan) {
340 /* Set appropriate bands */
341 if (chan->band == IEEE80211_BAND_2GHZ) {
342 if (channel_type == NL80211_CHAN_NO_HT)
343 if (priv->adapter->config_bands == BAND_B ||
344 priv->adapter->config_bands == BAND_G)
345 config_bands =
346 priv->adapter->config_bands;
347 else
348 config_bands = BAND_B | BAND_G;
349 else
350 config_bands = BAND_B | BAND_G | BAND_GN;
351 } else {
352 if (channel_type == NL80211_CHAN_NO_HT)
353 config_bands = BAND_A;
354 else
355 config_bands = BAND_AN | BAND_A;
356 }
357
358 if (!((config_bands | adapter->fw_bands) &
359 ~adapter->fw_bands)) {
360 adapter->config_bands = config_bands;
361 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
362 adapter->adhoc_start_band = config_bands;
363 if ((config_bands & BAND_GN) ||
364 (config_bands & BAND_AN))
365 adapter->adhoc_11n_enabled = true;
366 else
367 adapter->adhoc_11n_enabled = false;
368 }
369 }
370 adapter->sec_chan_offset =
371 mwifiex_cfg80211_channel_type_to_sec_chan_offset
372 (channel_type);
373 adapter->channel_type = channel_type;
374
375 mwifiex_send_domain_info_cmd_fw(wiphy);
376 }
377
378 wiphy_dbg(wiphy, "info: setting band %d, chan offset %d, mode %d\n",
379 config_bands, adapter->sec_chan_offset, priv->bss_mode);
380 if (!chan)
381 return 0;
382
383 memset(&cfp, 0, sizeof(cfp));
384 cfp.freq = chan->center_freq;
385 cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);
386
387 if (mwifiex_bss_set_channel(priv, &cfp))
388 return -EFAULT;
389
390 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 0, 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 bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param), GFP_KERNEL);
954 if (!bss_cfg)
955 return -ENOMEM;
956
957 mwifiex_set_sys_config_invalid_data(bss_cfg);
958
959 if (params->beacon_interval)
960 bss_cfg->beacon_period = params->beacon_interval;
961 if (params->dtim_period)
962 bss_cfg->dtim_period = params->dtim_period;
963
964 if (params->ssid && params->ssid_len) {
965 memcpy(bss_cfg->ssid.ssid, params->ssid, params->ssid_len);
966 bss_cfg->ssid.ssid_len = params->ssid_len;
967 }
968
969 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
970 HostCmd_ACT_GEN_SET, 0, NULL)) {
971 wiphy_err(wiphy, "Failed to stop the BSS\n");
972 kfree(bss_cfg);
973 return -1;
974 }
975
976 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG,
977 HostCmd_ACT_GEN_SET, 0, bss_cfg)) {
978 wiphy_err(wiphy, "Failed to set the SSID\n");
979 kfree(bss_cfg);
980 return -1;
981 }
982
983 kfree(bss_cfg);
984
985 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_BSS_START,
986 HostCmd_ACT_GEN_SET, 0, NULL)) {
987 wiphy_err(wiphy, "Failed to start the BSS\n");
988 return -1;
989 }
990
991 return 0;
992 }
993
994 /*
995 * CFG802.11 operation handler for disconnection request.
996 *
997 * This function does not work when there is already a disconnection
998 * procedure going on.
999 */
1000 static int
1001 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
1002 u16 reason_code)
1003 {
1004 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1005
1006 if (mwifiex_deauthenticate(priv, NULL))
1007 return -EFAULT;
1008
1009 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
1010 " reason code %d\n", priv->cfg_bssid, reason_code);
1011
1012 memset(priv->cfg_bssid, 0, ETH_ALEN);
1013
1014 return 0;
1015 }
1016
1017 /*
1018 * This function informs the CFG802.11 subsystem of a new IBSS.
1019 *
1020 * The following information are sent to the CFG802.11 subsystem
1021 * to register the new IBSS. If we do not register the new IBSS,
1022 * a kernel panic will result.
1023 * - SSID
1024 * - SSID length
1025 * - BSSID
1026 * - Channel
1027 */
1028 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1029 {
1030 struct ieee80211_channel *chan;
1031 struct mwifiex_bss_info bss_info;
1032 struct cfg80211_bss *bss;
1033 int ie_len;
1034 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1035 enum ieee80211_band band;
1036
1037 if (mwifiex_get_bss_info(priv, &bss_info))
1038 return -1;
1039
1040 ie_buf[0] = WLAN_EID_SSID;
1041 ie_buf[1] = bss_info.ssid.ssid_len;
1042
1043 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1044 &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1045 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1046
1047 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1048 chan = __ieee80211_get_channel(priv->wdev->wiphy,
1049 ieee80211_channel_to_frequency(bss_info.bss_chan,
1050 band));
1051
1052 bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1053 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1054 0, ie_buf, ie_len, 0, GFP_KERNEL);
1055 cfg80211_put_bss(bss);
1056 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1057
1058 return 0;
1059 }
1060
1061 /*
1062 * This function connects with a BSS.
1063 *
1064 * This function handles both Infra and Ad-Hoc modes. It also performs
1065 * validity checking on the provided parameters, disconnects from the
1066 * current BSS (if any), sets up the association/scan parameters,
1067 * including security settings, and performs specific SSID scan before
1068 * trying to connect.
1069 *
1070 * For Infra mode, the function returns failure if the specified SSID
1071 * is not found in scan table. However, for Ad-Hoc mode, it can create
1072 * the IBSS if it does not exist. On successful completion in either case,
1073 * the function notifies the CFG802.11 subsystem of the new BSS connection.
1074 */
1075 static int
1076 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1077 u8 *bssid, int mode, struct ieee80211_channel *channel,
1078 struct cfg80211_connect_params *sme, bool privacy)
1079 {
1080 struct cfg80211_ssid req_ssid;
1081 int ret, auth_type = 0;
1082 struct cfg80211_bss *bss = NULL;
1083 u8 is_scanning_required = 0;
1084
1085 memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1086
1087 req_ssid.ssid_len = ssid_len;
1088 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1089 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1090 return -EINVAL;
1091 }
1092
1093 memcpy(req_ssid.ssid, ssid, ssid_len);
1094 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1095 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1096 return -EINVAL;
1097 }
1098
1099 /* disconnect before try to associate */
1100 mwifiex_deauthenticate(priv, NULL);
1101
1102 if (channel)
1103 ret = mwifiex_set_rf_channel(priv, channel,
1104 priv->adapter->channel_type);
1105
1106 /* As this is new association, clear locally stored
1107 * keys and security related flags */
1108 priv->sec_info.wpa_enabled = false;
1109 priv->sec_info.wpa2_enabled = false;
1110 priv->wep_key_curr_index = 0;
1111 priv->sec_info.encryption_mode = 0;
1112 priv->sec_info.is_authtype_auto = 0;
1113 ret = mwifiex_set_encode(priv, NULL, 0, 0, NULL, 1);
1114
1115 if (mode == NL80211_IFTYPE_ADHOC) {
1116 /* "privacy" is set only for ad-hoc mode */
1117 if (privacy) {
1118 /*
1119 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1120 * the firmware can find a matching network from the
1121 * scan. The cfg80211 does not give us the encryption
1122 * mode at this stage so just setting it to WEP here.
1123 */
1124 priv->sec_info.encryption_mode =
1125 WLAN_CIPHER_SUITE_WEP104;
1126 priv->sec_info.authentication_mode =
1127 NL80211_AUTHTYPE_OPEN_SYSTEM;
1128 }
1129
1130 goto done;
1131 }
1132
1133 /* Now handle infra mode. "sme" is valid for infra mode only */
1134 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1135 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1136 priv->sec_info.is_authtype_auto = 1;
1137 } else {
1138 auth_type = sme->auth_type;
1139 }
1140
1141 if (sme->crypto.n_ciphers_pairwise) {
1142 priv->sec_info.encryption_mode =
1143 sme->crypto.ciphers_pairwise[0];
1144 priv->sec_info.authentication_mode = auth_type;
1145 }
1146
1147 if (sme->crypto.cipher_group) {
1148 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1149 priv->sec_info.authentication_mode = auth_type;
1150 }
1151 if (sme->ie)
1152 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1153
1154 if (sme->key) {
1155 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1156 dev_dbg(priv->adapter->dev,
1157 "info: setting wep encryption"
1158 " with key len %d\n", sme->key_len);
1159 priv->wep_key_curr_index = sme->key_idx;
1160 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1161 sme->key_idx, NULL, 0);
1162 }
1163 }
1164 done:
1165 /*
1166 * Scan entries are valid for some time (15 sec). So we can save one
1167 * active scan time if we just try cfg80211_get_bss first. If it fails
1168 * then request scan and cfg80211_get_bss() again for final output.
1169 */
1170 while (1) {
1171 if (is_scanning_required) {
1172 /* Do specific SSID scanning */
1173 if (mwifiex_request_scan(priv, &req_ssid)) {
1174 dev_err(priv->adapter->dev, "scan error\n");
1175 return -EFAULT;
1176 }
1177 }
1178
1179 /* Find the BSS we want using available scan results */
1180 if (mode == NL80211_IFTYPE_ADHOC)
1181 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1182 bssid, ssid, ssid_len,
1183 WLAN_CAPABILITY_IBSS,
1184 WLAN_CAPABILITY_IBSS);
1185 else
1186 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1187 bssid, ssid, ssid_len,
1188 WLAN_CAPABILITY_ESS,
1189 WLAN_CAPABILITY_ESS);
1190
1191 if (!bss) {
1192 if (is_scanning_required) {
1193 dev_warn(priv->adapter->dev,
1194 "assoc: requested bss not found in scan results\n");
1195 break;
1196 }
1197 is_scanning_required = 1;
1198 } else {
1199 dev_dbg(priv->adapter->dev,
1200 "info: trying to associate to '%s' bssid %pM\n",
1201 (char *) req_ssid.ssid, bss->bssid);
1202 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1203 break;
1204 }
1205 }
1206
1207 if (mwifiex_bss_start(priv, bss, &req_ssid))
1208 return -EFAULT;
1209
1210 if (mode == NL80211_IFTYPE_ADHOC) {
1211 /* Inform the BSS information to kernel, otherwise
1212 * kernel will give a panic after successful assoc */
1213 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1214 return -EFAULT;
1215 }
1216
1217 return ret;
1218 }
1219
1220 /*
1221 * CFG802.11 operation handler for association request.
1222 *
1223 * This function does not work when the current mode is set to Ad-Hoc, or
1224 * when there is already an association procedure going on. The given BSS
1225 * information is used to associate.
1226 */
1227 static int
1228 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1229 struct cfg80211_connect_params *sme)
1230 {
1231 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1232 int ret = 0;
1233
1234 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1235 wiphy_err(wiphy, "received infra assoc request "
1236 "when station is in ibss mode\n");
1237 goto done;
1238 }
1239
1240 if (priv->bss_mode == NL80211_IFTYPE_AP) {
1241 wiphy_err(wiphy, "skip association request for AP interface\n");
1242 goto done;
1243 }
1244
1245 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1246 (char *) sme->ssid, sme->bssid);
1247
1248 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1249 priv->bss_mode, sme->channel, sme, 0);
1250 done:
1251 if (!ret) {
1252 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1253 NULL, 0, WLAN_STATUS_SUCCESS,
1254 GFP_KERNEL);
1255 dev_dbg(priv->adapter->dev,
1256 "info: associated to bssid %pM successfully\n",
1257 priv->cfg_bssid);
1258 } else {
1259 dev_dbg(priv->adapter->dev,
1260 "info: association to bssid %pM failed\n",
1261 priv->cfg_bssid);
1262 memset(priv->cfg_bssid, 0, ETH_ALEN);
1263 }
1264
1265 return ret;
1266 }
1267
1268 /*
1269 * CFG802.11 operation handler to join an IBSS.
1270 *
1271 * This function does not work in any mode other than Ad-Hoc, or if
1272 * a join operation is already in progress.
1273 */
1274 static int
1275 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1276 struct cfg80211_ibss_params *params)
1277 {
1278 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1279 int ret = 0;
1280
1281 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1282 wiphy_err(wiphy, "request to join ibss received "
1283 "when station is not in ibss mode\n");
1284 goto done;
1285 }
1286
1287 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1288 (char *) params->ssid, params->bssid);
1289
1290 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1291 params->bssid, priv->bss_mode,
1292 params->channel, NULL, params->privacy);
1293 done:
1294 if (!ret) {
1295 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1296 dev_dbg(priv->adapter->dev,
1297 "info: joined/created adhoc network with bssid"
1298 " %pM successfully\n", priv->cfg_bssid);
1299 } else {
1300 dev_dbg(priv->adapter->dev,
1301 "info: failed creating/joining adhoc network\n");
1302 }
1303
1304 return ret;
1305 }
1306
1307 /*
1308 * CFG802.11 operation handler to leave an IBSS.
1309 *
1310 * This function does not work if a leave operation is
1311 * already in progress.
1312 */
1313 static int
1314 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1315 {
1316 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1317
1318 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1319 priv->cfg_bssid);
1320 if (mwifiex_deauthenticate(priv, NULL))
1321 return -EFAULT;
1322
1323 memset(priv->cfg_bssid, 0, ETH_ALEN);
1324
1325 return 0;
1326 }
1327
1328 /*
1329 * CFG802.11 operation handler for scan request.
1330 *
1331 * This function issues a scan request to the firmware based upon
1332 * the user specified scan configuration. On successfull completion,
1333 * it also informs the results.
1334 */
1335 static int
1336 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1337 struct cfg80211_scan_request *request)
1338 {
1339 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1340 int i;
1341 struct ieee80211_channel *chan;
1342
1343 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1344
1345 priv->scan_request = request;
1346
1347 priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1348 GFP_KERNEL);
1349 if (!priv->user_scan_cfg) {
1350 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1351 return -ENOMEM;
1352 }
1353
1354 priv->user_scan_cfg->num_ssids = request->n_ssids;
1355 priv->user_scan_cfg->ssid_list = request->ssids;
1356
1357 if (request->ie && request->ie_len) {
1358 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1359 if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1360 continue;
1361 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1362 memcpy(&priv->vs_ie[i].ie, request->ie,
1363 request->ie_len);
1364 break;
1365 }
1366 }
1367
1368 for (i = 0; i < request->n_channels; i++) {
1369 chan = request->channels[i];
1370 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1371 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1372
1373 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1374 priv->user_scan_cfg->chan_list[i].scan_type =
1375 MWIFIEX_SCAN_TYPE_PASSIVE;
1376 else
1377 priv->user_scan_cfg->chan_list[i].scan_type =
1378 MWIFIEX_SCAN_TYPE_ACTIVE;
1379
1380 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1381 }
1382 if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1383 return -EFAULT;
1384
1385 if (request->ie && request->ie_len) {
1386 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1387 if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1388 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1389 memset(&priv->vs_ie[i].ie, 0,
1390 MWIFIEX_MAX_VSIE_LEN);
1391 }
1392 }
1393 }
1394 return 0;
1395 }
1396
1397 /*
1398 * This function sets up the CFG802.11 specific HT capability fields
1399 * with default values.
1400 *
1401 * The following default values are set -
1402 * - HT Supported = True
1403 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1404 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1405 * - HT Capabilities supported by firmware
1406 * - MCS information, Rx mask = 0xff
1407 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1408 */
1409 static void
1410 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1411 struct mwifiex_private *priv)
1412 {
1413 int rx_mcs_supp;
1414 struct ieee80211_mcs_info mcs_set;
1415 u8 *mcs = (u8 *)&mcs_set;
1416 struct mwifiex_adapter *adapter = priv->adapter;
1417
1418 ht_info->ht_supported = true;
1419 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1420 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1421
1422 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1423
1424 /* Fill HT capability information */
1425 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1426 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1427 else
1428 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1429
1430 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1431 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1432 else
1433 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1434
1435 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1436 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1437 else
1438 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1439
1440 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1441 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1442 else
1443 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1444
1445 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1446 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1447 else
1448 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1449
1450 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1451 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1452
1453 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1454 /* Set MCS for 1x1 */
1455 memset(mcs, 0xff, rx_mcs_supp);
1456 /* Clear all the other values */
1457 memset(&mcs[rx_mcs_supp], 0,
1458 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1459 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1460 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1461 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1462 SETHT_MCS32(mcs_set.rx_mask);
1463
1464 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1465
1466 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1467 }
1468
1469 /*
1470 * create a new virtual interface with the given name
1471 */
1472 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1473 char *name,
1474 enum nl80211_iftype type,
1475 u32 *flags,
1476 struct vif_params *params)
1477 {
1478 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1479 struct mwifiex_private *priv;
1480 struct net_device *dev;
1481 void *mdev_priv;
1482 struct wireless_dev *wdev;
1483
1484 if (!adapter)
1485 return NULL;
1486
1487 switch (type) {
1488 case NL80211_IFTYPE_UNSPECIFIED:
1489 case NL80211_IFTYPE_STATION:
1490 case NL80211_IFTYPE_ADHOC:
1491 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1492 if (priv->bss_mode) {
1493 wiphy_err(wiphy,
1494 "cannot create multiple sta/adhoc ifaces\n");
1495 return NULL;
1496 }
1497
1498 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1499 if (!wdev)
1500 return NULL;
1501
1502 wdev->wiphy = wiphy;
1503 priv->wdev = wdev;
1504 wdev->iftype = NL80211_IFTYPE_STATION;
1505
1506 if (type == NL80211_IFTYPE_UNSPECIFIED)
1507 priv->bss_mode = NL80211_IFTYPE_STATION;
1508 else
1509 priv->bss_mode = type;
1510
1511 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1512 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1513 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
1514 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1515 priv->bss_num = 0;
1516
1517 break;
1518 case NL80211_IFTYPE_AP:
1519 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
1520
1521 if (priv->bss_mode) {
1522 wiphy_err(wiphy, "Can't create multiple AP interfaces");
1523 return NULL;
1524 }
1525
1526 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1527 if (!wdev)
1528 return NULL;
1529
1530 priv->wdev = wdev;
1531 wdev->wiphy = wiphy;
1532 wdev->iftype = NL80211_IFTYPE_AP;
1533
1534 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
1535 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1536 priv->bss_priority = MWIFIEX_BSS_ROLE_UAP;
1537 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
1538 priv->bss_started = 0;
1539 priv->bss_num = 0;
1540 priv->bss_mode = type;
1541
1542 break;
1543 default:
1544 wiphy_err(wiphy, "type not supported\n");
1545 return NULL;
1546 }
1547
1548 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1549 ether_setup, 1);
1550 if (!dev) {
1551 wiphy_err(wiphy, "no memory available for netdevice\n");
1552 goto error;
1553 }
1554
1555 mwifiex_init_priv_params(priv, dev);
1556 priv->netdev = dev;
1557
1558 mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1559
1560 if (adapter->config_bands & BAND_A)
1561 mwifiex_setup_ht_caps(
1562 &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1563
1564 dev_net_set(dev, wiphy_net(wiphy));
1565 dev->ieee80211_ptr = priv->wdev;
1566 dev->ieee80211_ptr->iftype = priv->bss_mode;
1567 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1568 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1569 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1570
1571 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1572 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1573 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1574
1575 mdev_priv = netdev_priv(dev);
1576 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1577
1578 SET_NETDEV_DEV(dev, adapter->dev);
1579
1580 /* Register network device */
1581 if (register_netdevice(dev)) {
1582 wiphy_err(wiphy, "cannot register virtual network device\n");
1583 goto error;
1584 }
1585
1586 sema_init(&priv->async_sem, 1);
1587 priv->scan_pending_on_block = false;
1588
1589 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1590
1591 #ifdef CONFIG_DEBUG_FS
1592 mwifiex_dev_debugfs_init(priv);
1593 #endif
1594 return dev;
1595 error:
1596 if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1597 free_netdev(dev);
1598 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1599
1600 return NULL;
1601 }
1602 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1603
1604 /*
1605 * del_virtual_intf: remove the virtual interface determined by dev
1606 */
1607 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1608 {
1609 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1610
1611 #ifdef CONFIG_DEBUG_FS
1612 mwifiex_dev_debugfs_remove(priv);
1613 #endif
1614
1615 if (!netif_queue_stopped(priv->netdev))
1616 netif_stop_queue(priv->netdev);
1617
1618 if (netif_carrier_ok(priv->netdev))
1619 netif_carrier_off(priv->netdev);
1620
1621 if (dev->reg_state == NETREG_REGISTERED)
1622 unregister_netdevice(dev);
1623
1624 if (dev->reg_state == NETREG_UNREGISTERED)
1625 free_netdev(dev);
1626
1627 /* Clear the priv in adapter */
1628 priv->netdev = NULL;
1629
1630 priv->media_connected = false;
1631
1632 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1633
1634 return 0;
1635 }
1636 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1637
1638 /* station cfg80211 operations */
1639 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1640 .add_virtual_intf = mwifiex_add_virtual_intf,
1641 .del_virtual_intf = mwifiex_del_virtual_intf,
1642 .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1643 .scan = mwifiex_cfg80211_scan,
1644 .connect = mwifiex_cfg80211_connect,
1645 .disconnect = mwifiex_cfg80211_disconnect,
1646 .get_station = mwifiex_cfg80211_get_station,
1647 .dump_station = mwifiex_cfg80211_dump_station,
1648 .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1649 .set_channel = mwifiex_cfg80211_set_channel,
1650 .join_ibss = mwifiex_cfg80211_join_ibss,
1651 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1652 .add_key = mwifiex_cfg80211_add_key,
1653 .del_key = mwifiex_cfg80211_del_key,
1654 .set_default_key = mwifiex_cfg80211_set_default_key,
1655 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1656 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1657 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1658 .start_ap = mwifiex_cfg80211_start_ap,
1659 .stop_ap = mwifiex_cfg80211_stop_ap,
1660 .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1661 };
1662
1663 /*
1664 * This function registers the device with CFG802.11 subsystem.
1665 *
1666 * The function creates the wireless device/wiphy, populates it with
1667 * default parameters and handler function pointers, and finally
1668 * registers the device.
1669 */
1670
1671 int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
1672 {
1673 int ret;
1674 void *wdev_priv;
1675 struct wiphy *wiphy;
1676 struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1677 u8 *country_code;
1678
1679 /* create a new wiphy for use with cfg80211 */
1680 wiphy = wiphy_new(&mwifiex_cfg80211_ops,
1681 sizeof(struct mwifiex_adapter *));
1682 if (!wiphy) {
1683 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
1684 return -ENOMEM;
1685 }
1686 wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
1687 wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1688 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1689 BIT(NL80211_IFTYPE_ADHOC) |
1690 BIT(NL80211_IFTYPE_AP);
1691
1692 wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1693 if (adapter->config_bands & BAND_A)
1694 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1695 else
1696 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1697
1698 wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
1699 wiphy->n_iface_combinations = 1;
1700
1701 /* Initialize cipher suits */
1702 wiphy->cipher_suites = mwifiex_cipher_suites;
1703 wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1704
1705 memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1706 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1707 wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME | WIPHY_FLAG_CUSTOM_REGULATORY;
1708
1709 /* Reserve space for mwifiex specific private data for BSS */
1710 wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1711
1712 wiphy->reg_notifier = mwifiex_reg_notifier;
1713
1714 /* Set struct mwifiex_adapter pointer in wiphy_priv */
1715 wdev_priv = wiphy_priv(wiphy);
1716 *(unsigned long *)wdev_priv = (unsigned long)adapter;
1717
1718 set_wiphy_dev(wiphy, (struct device *)priv->adapter->dev);
1719
1720 ret = wiphy_register(wiphy);
1721 if (ret < 0) {
1722 dev_err(adapter->dev,
1723 "%s: wiphy_register failed: %d\n", __func__, ret);
1724 wiphy_free(wiphy);
1725 return ret;
1726 }
1727 country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1728 if (country_code && regulatory_hint(wiphy, country_code))
1729 dev_err(adapter->dev, "regulatory_hint() failed\n");
1730
1731 adapter->wiphy = wiphy;
1732 return ret;
1733 }
Linux kernel - Deliverables
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