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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
23static 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
32static 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 */
50static u8
51mwifiex_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 */
70static int
71mwifiex_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 */
87static 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 */
95static int
96mwifiex_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 */
115static int
116mwifiex_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 */
142static int
143mwifiex_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 */
162static int
163mwifiex_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 */
184static int
185mwifiex_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 */
209static 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 */
298static 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 */
329static int
330mwifiex_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 * This function sets the fragmentation threshold.
398 *
399 * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
400 * and MWIFIEX_FRAG_MAX_VALUE.
401 */
402static int
403mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
404{
405 if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
406 frag_thr > MWIFIEX_FRAG_MAX_VALUE)
407 frag_thr = MWIFIEX_FRAG_MAX_VALUE;
408
409 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
410 HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
411 &frag_thr);
412}
413
414/*
415 * This function sets the RTS threshold.
416
417 * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
418 * and MWIFIEX_RTS_MAX_VALUE.
419 */
420static int
421mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
422{
423 if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
424 rts_thr = MWIFIEX_RTS_MAX_VALUE;
425
426 return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
427 HostCmd_ACT_GEN_SET, RTS_THRESH_I,
428 &rts_thr);
429}
430
431/*
432 * CFG802.11 operation handler to set wiphy parameters.
433 *
434 * This function can be used to set the RTS threshold and the
435 * Fragmentation threshold of the driver.
436 */
437static int
438mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
439{
440 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
441 struct mwifiex_private *priv;
442 struct mwifiex_uap_bss_param *bss_cfg;
443 int ret, bss_started, i;
444
445 for (i = 0; i < adapter->priv_num; i++) {
446 priv = adapter->priv[i];
447
448 switch (priv->bss_role) {
449 case MWIFIEX_BSS_ROLE_UAP:
450 bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param),
451 GFP_KERNEL);
452 if (!bss_cfg)
453 return -ENOMEM;
454
455 mwifiex_set_sys_config_invalid_data(bss_cfg);
456
457 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
458 bss_cfg->rts_threshold = wiphy->rts_threshold;
459 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
460 bss_cfg->frag_threshold = wiphy->frag_threshold;
461 if (changed & WIPHY_PARAM_RETRY_LONG)
462 bss_cfg->retry_limit = wiphy->retry_long;
463
464 bss_started = priv->bss_started;
465
466 ret = mwifiex_send_cmd_sync(priv,
467 HostCmd_CMD_UAP_BSS_STOP,
468 HostCmd_ACT_GEN_SET, 0,
469 NULL);
470 if (ret) {
471 wiphy_err(wiphy, "Failed to stop the BSS\n");
472 kfree(bss_cfg);
473 return ret;
474 }
475
476 ret = mwifiex_send_cmd_async(priv,
477 HostCmd_CMD_UAP_SYS_CONFIG,
478 HostCmd_ACT_GEN_SET,
479 UAP_BSS_PARAMS_I, bss_cfg);
480
481 kfree(bss_cfg);
482
483 if (ret) {
484 wiphy_err(wiphy, "Failed to set bss config\n");
485 return ret;
486 }
487
488 if (!bss_started)
489 break;
490
491 ret = mwifiex_send_cmd_async(priv,
492 HostCmd_CMD_UAP_BSS_START,
493 HostCmd_ACT_GEN_SET, 0,
494 NULL);
495 if (ret) {
496 wiphy_err(wiphy, "Failed to start BSS\n");
497 return ret;
498 }
499
500 break;
501 case MWIFIEX_BSS_ROLE_STA:
502 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
503 ret = mwifiex_set_rts(priv,
504 wiphy->rts_threshold);
505 if (ret)
506 return ret;
507 }
508 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
509 ret = mwifiex_set_frag(priv,
510 wiphy->frag_threshold);
511 if (ret)
512 return ret;
513 }
514 break;
515 }
516 }
517
518 return 0;
519}
520
521/*
522 * CFG802.11 operation handler to change interface type.
523 */
524static int
525mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
526 struct net_device *dev,
527 enum nl80211_iftype type, u32 *flags,
528 struct vif_params *params)
529{
530 int ret;
531 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
532
533 switch (dev->ieee80211_ptr->iftype) {
534 case NL80211_IFTYPE_ADHOC:
535 switch (type) {
536 case NL80211_IFTYPE_STATION:
537 break;
538 case NL80211_IFTYPE_UNSPECIFIED:
539 wiphy_warn(wiphy, "%s: kept type as IBSS\n", dev->name);
540 case NL80211_IFTYPE_ADHOC: /* This shouldn't happen */
541 return 0;
542 case NL80211_IFTYPE_AP:
543 default:
544 wiphy_err(wiphy, "%s: changing to %d not supported\n",
545 dev->name, type);
546 return -EOPNOTSUPP;
547 }
548 break;
549 case NL80211_IFTYPE_STATION:
550 switch (type) {
551 case NL80211_IFTYPE_ADHOC:
552 break;
553 case NL80211_IFTYPE_UNSPECIFIED:
554 wiphy_warn(wiphy, "%s: kept type as STA\n", dev->name);
555 case NL80211_IFTYPE_STATION: /* This shouldn't happen */
556 return 0;
557 case NL80211_IFTYPE_AP:
558 default:
559 wiphy_err(wiphy, "%s: changing to %d not supported\n",
560 dev->name, type);
561 return -EOPNOTSUPP;
562 }
563 break;
564 case NL80211_IFTYPE_AP:
565 switch (type) {
566 case NL80211_IFTYPE_UNSPECIFIED:
567 wiphy_warn(wiphy, "%s: kept type as AP\n", dev->name);
568 case NL80211_IFTYPE_AP: /* This shouldn't happen */
569 return 0;
570 case NL80211_IFTYPE_ADHOC:
571 case NL80211_IFTYPE_STATION:
572 default:
573 wiphy_err(wiphy, "%s: changing to %d not supported\n",
574 dev->name, type);
575 return -EOPNOTSUPP;
576 }
577 break;
578 default:
579 wiphy_err(wiphy, "%s: unknown iftype: %d\n",
580 dev->name, dev->ieee80211_ptr->iftype);
581 return -EOPNOTSUPP;
582 }
583
584 dev->ieee80211_ptr->iftype = type;
585 priv->bss_mode = type;
586 mwifiex_deauthenticate(priv, NULL);
587
588 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
589
590 ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
591 HostCmd_ACT_GEN_SET, 0, NULL);
592
593 return ret;
594}
595
596/*
597 * This function dumps the station information on a buffer.
598 *
599 * The following information are shown -
600 * - Total bytes transmitted
601 * - Total bytes received
602 * - Total packets transmitted
603 * - Total packets received
604 * - Signal quality level
605 * - Transmission rate
606 */
607static int
608mwifiex_dump_station_info(struct mwifiex_private *priv,
609 struct station_info *sinfo)
610{
611 struct mwifiex_rate_cfg rate;
612
613 sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
614 STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS |
615 STATION_INFO_TX_BITRATE |
616 STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
617
618 /* Get signal information from the firmware */
619 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
620 HostCmd_ACT_GEN_GET, 0, NULL)) {
621 dev_err(priv->adapter->dev, "failed to get signal information\n");
622 return -EFAULT;
623 }
624
625 if (mwifiex_drv_get_data_rate(priv, &rate)) {
626 dev_err(priv->adapter->dev, "getting data rate\n");
627 return -EFAULT;
628 }
629
630 /* Get DTIM period information from firmware */
631 mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
632 HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
633 &priv->dtim_period);
634
635 /*
636 * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
637 * MCS index values for us are 0 to 15.
638 */
639 if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
640 sinfo->txrate.mcs = priv->tx_rate;
641 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
642 /* 40MHz rate */
643 if (priv->tx_htinfo & BIT(1))
644 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
645 /* SGI enabled */
646 if (priv->tx_htinfo & BIT(2))
647 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
648 }
649
650 sinfo->signal_avg = priv->bcn_rssi_avg;
651 sinfo->rx_bytes = priv->stats.rx_bytes;
652 sinfo->tx_bytes = priv->stats.tx_bytes;
653 sinfo->rx_packets = priv->stats.rx_packets;
654 sinfo->tx_packets = priv->stats.tx_packets;
655 sinfo->signal = priv->bcn_rssi_avg;
656 /* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
657 sinfo->txrate.legacy = rate.rate * 5;
658
659 if (priv->bss_mode == NL80211_IFTYPE_STATION) {
660 sinfo->filled |= STATION_INFO_BSS_PARAM;
661 sinfo->bss_param.flags = 0;
662 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
663 WLAN_CAPABILITY_SHORT_PREAMBLE)
664 sinfo->bss_param.flags |=
665 BSS_PARAM_FLAGS_SHORT_PREAMBLE;
666 if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
667 WLAN_CAPABILITY_SHORT_SLOT_TIME)
668 sinfo->bss_param.flags |=
669 BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
670 sinfo->bss_param.dtim_period = priv->dtim_period;
671 sinfo->bss_param.beacon_interval =
672 priv->curr_bss_params.bss_descriptor.beacon_period;
673 }
674
675 return 0;
676}
677
678/*
679 * CFG802.11 operation handler to get station information.
680 *
681 * This function only works in connected mode, and dumps the
682 * requested station information, if available.
683 */
684static int
685mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
686 u8 *mac, struct station_info *sinfo)
687{
688 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
689
690 if (!priv->media_connected)
691 return -ENOENT;
692 if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
693 return -ENOENT;
694
695 return mwifiex_dump_station_info(priv, sinfo);
696}
697
698/*
699 * CFG802.11 operation handler to dump station information.
700 */
701static int
702mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
703 int idx, u8 *mac, struct station_info *sinfo)
704{
705 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
706
707 if (!priv->media_connected || idx)
708 return -ENOENT;
709
710 memcpy(mac, priv->cfg_bssid, ETH_ALEN);
711
712 return mwifiex_dump_station_info(priv, sinfo);
713}
714
715/* Supported rates to be advertised to the cfg80211 */
716
717static struct ieee80211_rate mwifiex_rates[] = {
718 {.bitrate = 10, .hw_value = 2, },
719 {.bitrate = 20, .hw_value = 4, },
720 {.bitrate = 55, .hw_value = 11, },
721 {.bitrate = 110, .hw_value = 22, },
722 {.bitrate = 60, .hw_value = 12, },
723 {.bitrate = 90, .hw_value = 18, },
724 {.bitrate = 120, .hw_value = 24, },
725 {.bitrate = 180, .hw_value = 36, },
726 {.bitrate = 240, .hw_value = 48, },
727 {.bitrate = 360, .hw_value = 72, },
728 {.bitrate = 480, .hw_value = 96, },
729 {.bitrate = 540, .hw_value = 108, },
730};
731
732/* Channel definitions to be advertised to cfg80211 */
733
734static struct ieee80211_channel mwifiex_channels_2ghz[] = {
735 {.center_freq = 2412, .hw_value = 1, },
736 {.center_freq = 2417, .hw_value = 2, },
737 {.center_freq = 2422, .hw_value = 3, },
738 {.center_freq = 2427, .hw_value = 4, },
739 {.center_freq = 2432, .hw_value = 5, },
740 {.center_freq = 2437, .hw_value = 6, },
741 {.center_freq = 2442, .hw_value = 7, },
742 {.center_freq = 2447, .hw_value = 8, },
743 {.center_freq = 2452, .hw_value = 9, },
744 {.center_freq = 2457, .hw_value = 10, },
745 {.center_freq = 2462, .hw_value = 11, },
746 {.center_freq = 2467, .hw_value = 12, },
747 {.center_freq = 2472, .hw_value = 13, },
748 {.center_freq = 2484, .hw_value = 14, },
749};
750
751static struct ieee80211_supported_band mwifiex_band_2ghz = {
752 .channels = mwifiex_channels_2ghz,
753 .n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
754 .bitrates = mwifiex_rates,
755 .n_bitrates = ARRAY_SIZE(mwifiex_rates),
756};
757
758static struct ieee80211_channel mwifiex_channels_5ghz[] = {
759 {.center_freq = 5040, .hw_value = 8, },
760 {.center_freq = 5060, .hw_value = 12, },
761 {.center_freq = 5080, .hw_value = 16, },
762 {.center_freq = 5170, .hw_value = 34, },
763 {.center_freq = 5190, .hw_value = 38, },
764 {.center_freq = 5210, .hw_value = 42, },
765 {.center_freq = 5230, .hw_value = 46, },
766 {.center_freq = 5180, .hw_value = 36, },
767 {.center_freq = 5200, .hw_value = 40, },
768 {.center_freq = 5220, .hw_value = 44, },
769 {.center_freq = 5240, .hw_value = 48, },
770 {.center_freq = 5260, .hw_value = 52, },
771 {.center_freq = 5280, .hw_value = 56, },
772 {.center_freq = 5300, .hw_value = 60, },
773 {.center_freq = 5320, .hw_value = 64, },
774 {.center_freq = 5500, .hw_value = 100, },
775 {.center_freq = 5520, .hw_value = 104, },
776 {.center_freq = 5540, .hw_value = 108, },
777 {.center_freq = 5560, .hw_value = 112, },
778 {.center_freq = 5580, .hw_value = 116, },
779 {.center_freq = 5600, .hw_value = 120, },
780 {.center_freq = 5620, .hw_value = 124, },
781 {.center_freq = 5640, .hw_value = 128, },
782 {.center_freq = 5660, .hw_value = 132, },
783 {.center_freq = 5680, .hw_value = 136, },
784 {.center_freq = 5700, .hw_value = 140, },
785 {.center_freq = 5745, .hw_value = 149, },
786 {.center_freq = 5765, .hw_value = 153, },
787 {.center_freq = 5785, .hw_value = 157, },
788 {.center_freq = 5805, .hw_value = 161, },
789 {.center_freq = 5825, .hw_value = 165, },
790};
791
792static struct ieee80211_supported_band mwifiex_band_5ghz = {
793 .channels = mwifiex_channels_5ghz,
794 .n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
795 .bitrates = mwifiex_rates + 4,
796 .n_bitrates = ARRAY_SIZE(mwifiex_rates) - 4,
797};
798
799
800/* Supported crypto cipher suits to be advertised to cfg80211 */
801
802static const u32 mwifiex_cipher_suites[] = {
803 WLAN_CIPHER_SUITE_WEP40,
804 WLAN_CIPHER_SUITE_WEP104,
805 WLAN_CIPHER_SUITE_TKIP,
806 WLAN_CIPHER_SUITE_CCMP,
807};
808
809/*
810 * CFG802.11 operation handler for setting bit rates.
811 *
812 * Function selects legacy bang B/G/BG from corresponding bitrates selection.
813 * Currently only 2.4GHz band is supported.
814 */
815static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
816 struct net_device *dev,
817 const u8 *peer,
818 const struct cfg80211_bitrate_mask *mask)
819{
820 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
821 int index = 0, mode = 0, i;
822 struct mwifiex_adapter *adapter = priv->adapter;
823
824 /* Currently only 2.4GHz is supported */
825 for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
826 /*
827 * Rates below 6 Mbps in the table are CCK rates; 802.11b
828 * and from 6 they are OFDM; 802.11G
829 */
830 if (mwifiex_rates[i].bitrate == 60) {
831 index = 1 << i;
832 break;
833 }
834 }
835
836 if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
837 mode = BAND_B;
838 } else {
839 mode = BAND_G;
840 if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
841 mode |= BAND_B;
842 }
843
844 if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
845 adapter->config_bands = mode;
846 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
847 adapter->adhoc_start_band = mode;
848 adapter->adhoc_11n_enabled = false;
849 }
850 }
851 adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
852 adapter->channel_type = NL80211_CHAN_NO_HT;
853
854 wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
855 (mode & BAND_B) ? "b" : "", (mode & BAND_G) ? "g" : "");
856
857 return 0;
858}
859
860/*
861 * CFG802.11 operation handler for connection quality monitoring.
862 *
863 * This function subscribes/unsubscribes HIGH_RSSI and LOW_RSSI
864 * events to FW.
865 */
866static int mwifiex_cfg80211_set_cqm_rssi_config(struct wiphy *wiphy,
867 struct net_device *dev,
868 s32 rssi_thold, u32 rssi_hyst)
869{
870 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
871 struct mwifiex_ds_misc_subsc_evt subsc_evt;
872
873 priv->cqm_rssi_thold = rssi_thold;
874 priv->cqm_rssi_hyst = rssi_hyst;
875
876 memset(&subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));
877 subsc_evt.events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
878
879 /* Subscribe/unsubscribe low and high rssi events */
880 if (rssi_thold && rssi_hyst) {
881 subsc_evt.action = HostCmd_ACT_BITWISE_SET;
882 subsc_evt.bcn_l_rssi_cfg.abs_value = abs(rssi_thold);
883 subsc_evt.bcn_h_rssi_cfg.abs_value = abs(rssi_thold);
884 subsc_evt.bcn_l_rssi_cfg.evt_freq = 1;
885 subsc_evt.bcn_h_rssi_cfg.evt_freq = 1;
886 return mwifiex_send_cmd_sync(priv,
887 HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
888 0, 0, &subsc_evt);
889 } else {
890 subsc_evt.action = HostCmd_ACT_BITWISE_CLR;
891 return mwifiex_send_cmd_sync(priv,
892 HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
893 0, 0, &subsc_evt);
894 }
895
896 return 0;
897}
898
899/* cfg80211 operation handler for stop ap.
900 * Function stops BSS running at uAP interface.
901 */
902static int mwifiex_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
903{
904 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
905
906 if (mwifiex_del_mgmt_ies(priv))
907 wiphy_err(wiphy, "Failed to delete mgmt IEs!\n");
908
909 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
910 HostCmd_ACT_GEN_SET, 0, NULL)) {
911 wiphy_err(wiphy, "Failed to stop the BSS\n");
912 return -1;
913 }
914
915 return 0;
916}
917
918/* cfg80211 operation handler for start_ap.
919 * Function sets beacon period, DTIM period, SSID and security into
920 * AP config structure.
921 * AP is configured with these settings and BSS is started.
922 */
923static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy,
924 struct net_device *dev,
925 struct cfg80211_ap_settings *params)
926{
927 struct mwifiex_uap_bss_param *bss_cfg;
928 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
929
930 if (priv->bss_type != MWIFIEX_BSS_TYPE_UAP)
931 return -1;
932 if (mwifiex_set_mgmt_ies(priv, params))
933 return -1;
934
935 bss_cfg = kzalloc(sizeof(struct mwifiex_uap_bss_param), GFP_KERNEL);
936 if (!bss_cfg)
937 return -ENOMEM;
938
939 mwifiex_set_sys_config_invalid_data(bss_cfg);
940
941 if (params->beacon_interval)
942 bss_cfg->beacon_period = params->beacon_interval;
943 if (params->dtim_period)
944 bss_cfg->dtim_period = params->dtim_period;
945
946 if (params->ssid && params->ssid_len) {
947 memcpy(bss_cfg->ssid.ssid, params->ssid, params->ssid_len);
948 bss_cfg->ssid.ssid_len = params->ssid_len;
949 }
950
951 switch (params->hidden_ssid) {
952 case NL80211_HIDDEN_SSID_NOT_IN_USE:
953 bss_cfg->bcast_ssid_ctl = 1;
954 break;
955 case NL80211_HIDDEN_SSID_ZERO_LEN:
956 bss_cfg->bcast_ssid_ctl = 0;
957 break;
958 case NL80211_HIDDEN_SSID_ZERO_CONTENTS:
959 /* firmware doesn't support this type of hidden SSID */
960 default:
961 kfree(bss_cfg);
962 return -EINVAL;
963 }
964
965 if (mwifiex_set_secure_params(priv, bss_cfg, params)) {
966 kfree(bss_cfg);
967 wiphy_err(wiphy, "Failed to parse secuirty parameters!\n");
968 return -1;
969 }
970
971 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
972 HostCmd_ACT_GEN_SET, 0, NULL)) {
973 wiphy_err(wiphy, "Failed to stop the BSS\n");
974 kfree(bss_cfg);
975 return -1;
976 }
977
978 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG,
979 HostCmd_ACT_GEN_SET,
980 UAP_BSS_PARAMS_I, bss_cfg)) {
981 wiphy_err(wiphy, "Failed to set the SSID\n");
982 kfree(bss_cfg);
983 return -1;
984 }
985
986 kfree(bss_cfg);
987
988 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_BSS_START,
989 HostCmd_ACT_GEN_SET, 0, NULL)) {
990 wiphy_err(wiphy, "Failed to start the BSS\n");
991 return -1;
992 }
993
994 return 0;
995}
996
997/*
998 * CFG802.11 operation handler for disconnection request.
999 *
1000 * This function does not work when there is already a disconnection
1001 * procedure going on.
1002 */
1003static int
1004mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
1005 u16 reason_code)
1006{
1007 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1008
1009 if (mwifiex_deauthenticate(priv, NULL))
1010 return -EFAULT;
1011
1012 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
1013 " reason code %d\n", priv->cfg_bssid, reason_code);
1014
1015 memset(priv->cfg_bssid, 0, ETH_ALEN);
1016
1017 return 0;
1018}
1019
1020/*
1021 * This function informs the CFG802.11 subsystem of a new IBSS.
1022 *
1023 * The following information are sent to the CFG802.11 subsystem
1024 * to register the new IBSS. If we do not register the new IBSS,
1025 * a kernel panic will result.
1026 * - SSID
1027 * - SSID length
1028 * - BSSID
1029 * - Channel
1030 */
1031static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1032{
1033 struct ieee80211_channel *chan;
1034 struct mwifiex_bss_info bss_info;
1035 struct cfg80211_bss *bss;
1036 int ie_len;
1037 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1038 enum ieee80211_band band;
1039
1040 if (mwifiex_get_bss_info(priv, &bss_info))
1041 return -1;
1042
1043 ie_buf[0] = WLAN_EID_SSID;
1044 ie_buf[1] = bss_info.ssid.ssid_len;
1045
1046 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1047 &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1048 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1049
1050 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1051 chan = __ieee80211_get_channel(priv->wdev->wiphy,
1052 ieee80211_channel_to_frequency(bss_info.bss_chan,
1053 band));
1054
1055 bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1056 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1057 0, ie_buf, ie_len, 0, GFP_KERNEL);
1058 cfg80211_put_bss(bss);
1059 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1060
1061 return 0;
1062}
1063
1064/*
1065 * This function connects with a BSS.
1066 *
1067 * This function handles both Infra and Ad-Hoc modes. It also performs
1068 * validity checking on the provided parameters, disconnects from the
1069 * current BSS (if any), sets up the association/scan parameters,
1070 * including security settings, and performs specific SSID scan before
1071 * trying to connect.
1072 *
1073 * For Infra mode, the function returns failure if the specified SSID
1074 * is not found in scan table. However, for Ad-Hoc mode, it can create
1075 * the IBSS if it does not exist. On successful completion in either case,
1076 * the function notifies the CFG802.11 subsystem of the new BSS connection.
1077 */
1078static int
1079mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1080 u8 *bssid, int mode, struct ieee80211_channel *channel,
1081 struct cfg80211_connect_params *sme, bool privacy)
1082{
1083 struct cfg80211_ssid req_ssid;
1084 int ret, auth_type = 0;
1085 struct cfg80211_bss *bss = NULL;
1086 u8 is_scanning_required = 0;
1087
1088 memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1089
1090 req_ssid.ssid_len = ssid_len;
1091 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1092 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1093 return -EINVAL;
1094 }
1095
1096 memcpy(req_ssid.ssid, ssid, ssid_len);
1097 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1098 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1099 return -EINVAL;
1100 }
1101
1102 /* disconnect before try to associate */
1103 mwifiex_deauthenticate(priv, NULL);
1104
1105 if (channel)
1106 ret = mwifiex_set_rf_channel(priv, channel,
1107 priv->adapter->channel_type);
1108
1109 /* As this is new association, clear locally stored
1110 * keys and security related flags */
1111 priv->sec_info.wpa_enabled = false;
1112 priv->sec_info.wpa2_enabled = false;
1113 priv->wep_key_curr_index = 0;
1114 priv->sec_info.encryption_mode = 0;
1115 priv->sec_info.is_authtype_auto = 0;
1116 ret = mwifiex_set_encode(priv, NULL, 0, 0, NULL, 1);
1117
1118 if (mode == NL80211_IFTYPE_ADHOC) {
1119 /* "privacy" is set only for ad-hoc mode */
1120 if (privacy) {
1121 /*
1122 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1123 * the firmware can find a matching network from the
1124 * scan. The cfg80211 does not give us the encryption
1125 * mode at this stage so just setting it to WEP here.
1126 */
1127 priv->sec_info.encryption_mode =
1128 WLAN_CIPHER_SUITE_WEP104;
1129 priv->sec_info.authentication_mode =
1130 NL80211_AUTHTYPE_OPEN_SYSTEM;
1131 }
1132
1133 goto done;
1134 }
1135
1136 /* Now handle infra mode. "sme" is valid for infra mode only */
1137 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1138 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1139 priv->sec_info.is_authtype_auto = 1;
1140 } else {
1141 auth_type = sme->auth_type;
1142 }
1143
1144 if (sme->crypto.n_ciphers_pairwise) {
1145 priv->sec_info.encryption_mode =
1146 sme->crypto.ciphers_pairwise[0];
1147 priv->sec_info.authentication_mode = auth_type;
1148 }
1149
1150 if (sme->crypto.cipher_group) {
1151 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1152 priv->sec_info.authentication_mode = auth_type;
1153 }
1154 if (sme->ie)
1155 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1156
1157 if (sme->key) {
1158 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1159 dev_dbg(priv->adapter->dev,
1160 "info: setting wep encryption"
1161 " with key len %d\n", sme->key_len);
1162 priv->wep_key_curr_index = sme->key_idx;
1163 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1164 sme->key_idx, NULL, 0);
1165 }
1166 }
1167done:
1168 /*
1169 * Scan entries are valid for some time (15 sec). So we can save one
1170 * active scan time if we just try cfg80211_get_bss first. If it fails
1171 * then request scan and cfg80211_get_bss() again for final output.
1172 */
1173 while (1) {
1174 if (is_scanning_required) {
1175 /* Do specific SSID scanning */
1176 if (mwifiex_request_scan(priv, &req_ssid)) {
1177 dev_err(priv->adapter->dev, "scan error\n");
1178 return -EFAULT;
1179 }
1180 }
1181
1182 /* Find the BSS we want using available scan results */
1183 if (mode == NL80211_IFTYPE_ADHOC)
1184 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1185 bssid, ssid, ssid_len,
1186 WLAN_CAPABILITY_IBSS,
1187 WLAN_CAPABILITY_IBSS);
1188 else
1189 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1190 bssid, ssid, ssid_len,
1191 WLAN_CAPABILITY_ESS,
1192 WLAN_CAPABILITY_ESS);
1193
1194 if (!bss) {
1195 if (is_scanning_required) {
1196 dev_warn(priv->adapter->dev,
1197 "assoc: requested bss not found in scan results\n");
1198 break;
1199 }
1200 is_scanning_required = 1;
1201 } else {
1202 dev_dbg(priv->adapter->dev,
1203 "info: trying to associate to '%s' bssid %pM\n",
1204 (char *) req_ssid.ssid, bss->bssid);
1205 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1206 break;
1207 }
1208 }
1209
1210 if (mwifiex_bss_start(priv, bss, &req_ssid))
1211 return -EFAULT;
1212
1213 if (mode == NL80211_IFTYPE_ADHOC) {
1214 /* Inform the BSS information to kernel, otherwise
1215 * kernel will give a panic after successful assoc */
1216 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1217 return -EFAULT;
1218 }
1219
1220 return ret;
1221}
1222
1223/*
1224 * CFG802.11 operation handler for association request.
1225 *
1226 * This function does not work when the current mode is set to Ad-Hoc, or
1227 * when there is already an association procedure going on. The given BSS
1228 * information is used to associate.
1229 */
1230static int
1231mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1232 struct cfg80211_connect_params *sme)
1233{
1234 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1235 int ret = 0;
1236
1237 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1238 wiphy_err(wiphy, "received infra assoc request "
1239 "when station is in ibss mode\n");
1240 goto done;
1241 }
1242
1243 if (priv->bss_mode == NL80211_IFTYPE_AP) {
1244 wiphy_err(wiphy, "skip association request for AP interface\n");
1245 goto done;
1246 }
1247
1248 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1249 (char *) sme->ssid, sme->bssid);
1250
1251 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1252 priv->bss_mode, sme->channel, sme, 0);
1253done:
1254 if (!ret) {
1255 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1256 NULL, 0, WLAN_STATUS_SUCCESS,
1257 GFP_KERNEL);
1258 dev_dbg(priv->adapter->dev,
1259 "info: associated to bssid %pM successfully\n",
1260 priv->cfg_bssid);
1261 } else {
1262 dev_dbg(priv->adapter->dev,
1263 "info: association to bssid %pM failed\n",
1264 priv->cfg_bssid);
1265 memset(priv->cfg_bssid, 0, ETH_ALEN);
1266 }
1267
1268 return ret;
1269}
1270
1271/*
1272 * CFG802.11 operation handler to join an IBSS.
1273 *
1274 * This function does not work in any mode other than Ad-Hoc, or if
1275 * a join operation is already in progress.
1276 */
1277static int
1278mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1279 struct cfg80211_ibss_params *params)
1280{
1281 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1282 int ret = 0;
1283
1284 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1285 wiphy_err(wiphy, "request to join ibss received "
1286 "when station is not in ibss mode\n");
1287 goto done;
1288 }
1289
1290 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1291 (char *) params->ssid, params->bssid);
1292
1293 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1294 params->bssid, priv->bss_mode,
1295 params->channel, NULL, params->privacy);
1296done:
1297 if (!ret) {
1298 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1299 dev_dbg(priv->adapter->dev,
1300 "info: joined/created adhoc network with bssid"
1301 " %pM successfully\n", priv->cfg_bssid);
1302 } else {
1303 dev_dbg(priv->adapter->dev,
1304 "info: failed creating/joining adhoc network\n");
1305 }
1306
1307 return ret;
1308}
1309
1310/*
1311 * CFG802.11 operation handler to leave an IBSS.
1312 *
1313 * This function does not work if a leave operation is
1314 * already in progress.
1315 */
1316static int
1317mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1318{
1319 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1320
1321 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1322 priv->cfg_bssid);
1323 if (mwifiex_deauthenticate(priv, NULL))
1324 return -EFAULT;
1325
1326 memset(priv->cfg_bssid, 0, ETH_ALEN);
1327
1328 return 0;
1329}
1330
1331/*
1332 * CFG802.11 operation handler for scan request.
1333 *
1334 * This function issues a scan request to the firmware based upon
1335 * the user specified scan configuration. On successfull completion,
1336 * it also informs the results.
1337 */
1338static int
1339mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1340 struct cfg80211_scan_request *request)
1341{
1342 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1343 int i;
1344 struct ieee80211_channel *chan;
1345
1346 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1347
1348 priv->scan_request = request;
1349
1350 priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1351 GFP_KERNEL);
1352 if (!priv->user_scan_cfg) {
1353 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1354 return -ENOMEM;
1355 }
1356
1357 priv->user_scan_cfg->num_ssids = request->n_ssids;
1358 priv->user_scan_cfg->ssid_list = request->ssids;
1359
1360 if (request->ie && request->ie_len) {
1361 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1362 if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1363 continue;
1364 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1365 memcpy(&priv->vs_ie[i].ie, request->ie,
1366 request->ie_len);
1367 break;
1368 }
1369 }
1370
1371 for (i = 0; i < request->n_channels; i++) {
1372 chan = request->channels[i];
1373 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1374 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1375
1376 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1377 priv->user_scan_cfg->chan_list[i].scan_type =
1378 MWIFIEX_SCAN_TYPE_PASSIVE;
1379 else
1380 priv->user_scan_cfg->chan_list[i].scan_type =
1381 MWIFIEX_SCAN_TYPE_ACTIVE;
1382
1383 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1384 }
1385 if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1386 return -EFAULT;
1387
1388 if (request->ie && request->ie_len) {
1389 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1390 if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1391 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1392 memset(&priv->vs_ie[i].ie, 0,
1393 MWIFIEX_MAX_VSIE_LEN);
1394 }
1395 }
1396 }
1397 return 0;
1398}
1399
1400/*
1401 * This function sets up the CFG802.11 specific HT capability fields
1402 * with default values.
1403 *
1404 * The following default values are set -
1405 * - HT Supported = True
1406 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1407 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1408 * - HT Capabilities supported by firmware
1409 * - MCS information, Rx mask = 0xff
1410 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1411 */
1412static void
1413mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1414 struct mwifiex_private *priv)
1415{
1416 int rx_mcs_supp;
1417 struct ieee80211_mcs_info mcs_set;
1418 u8 *mcs = (u8 *)&mcs_set;
1419 struct mwifiex_adapter *adapter = priv->adapter;
1420
1421 ht_info->ht_supported = true;
1422 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1423 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1424
1425 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1426
1427 /* Fill HT capability information */
1428 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1429 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1430 else
1431 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1432
1433 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1434 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1435 else
1436 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1437
1438 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1439 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1440 else
1441 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1442
1443 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1444 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1445 else
1446 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1447
1448 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1449 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1450 else
1451 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1452
1453 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1454 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1455
1456 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1457 /* Set MCS for 1x1 */
1458 memset(mcs, 0xff, rx_mcs_supp);
1459 /* Clear all the other values */
1460 memset(&mcs[rx_mcs_supp], 0,
1461 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1462 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1463 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1464 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1465 SETHT_MCS32(mcs_set.rx_mask);
1466
1467 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1468
1469 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1470}
1471
1472/*
1473 * create a new virtual interface with the given name
1474 */
1475struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1476 char *name,
1477 enum nl80211_iftype type,
1478 u32 *flags,
1479 struct vif_params *params)
1480{
1481 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1482 struct mwifiex_private *priv;
1483 struct net_device *dev;
1484 void *mdev_priv;
1485 struct wireless_dev *wdev;
1486
1487 if (!adapter)
1488 return ERR_PTR(-EFAULT);
1489
1490 switch (type) {
1491 case NL80211_IFTYPE_UNSPECIFIED:
1492 case NL80211_IFTYPE_STATION:
1493 case NL80211_IFTYPE_ADHOC:
1494 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1495 if (priv->bss_mode) {
1496 wiphy_err(wiphy,
1497 "cannot create multiple sta/adhoc ifaces\n");
1498 return ERR_PTR(-EINVAL);
1499 }
1500
1501 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1502 if (!wdev)
1503 return ERR_PTR(-ENOMEM);
1504
1505 wdev->wiphy = wiphy;
1506 priv->wdev = wdev;
1507 wdev->iftype = NL80211_IFTYPE_STATION;
1508
1509 if (type == NL80211_IFTYPE_UNSPECIFIED)
1510 priv->bss_mode = NL80211_IFTYPE_STATION;
1511 else
1512 priv->bss_mode = type;
1513
1514 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1515 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1516 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
1517 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1518 priv->bss_num = 0;
1519
1520 break;
1521 case NL80211_IFTYPE_AP:
1522 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
1523
1524 if (priv->bss_mode) {
1525 wiphy_err(wiphy, "Can't create multiple AP interfaces");
1526 return ERR_PTR(-EINVAL);
1527 }
1528
1529 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1530 if (!wdev)
1531 return ERR_PTR(-ENOMEM);
1532
1533 priv->wdev = wdev;
1534 wdev->wiphy = wiphy;
1535 wdev->iftype = NL80211_IFTYPE_AP;
1536
1537 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
1538 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1539 priv->bss_priority = MWIFIEX_BSS_ROLE_UAP;
1540 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
1541 priv->bss_started = 0;
1542 priv->bss_num = 0;
1543 priv->bss_mode = type;
1544
1545 break;
1546 default:
1547 wiphy_err(wiphy, "type not supported\n");
1548 return ERR_PTR(-EINVAL);
1549 }
1550
1551 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1552 ether_setup, 1);
1553 if (!dev) {
1554 wiphy_err(wiphy, "no memory available for netdevice\n");
1555 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1556 return ERR_PTR(-ENOMEM);
1557 }
1558
1559 mwifiex_init_priv_params(priv, dev);
1560 priv->netdev = dev;
1561
1562 mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1563
1564 if (adapter->config_bands & BAND_A)
1565 mwifiex_setup_ht_caps(
1566 &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1567
1568 dev_net_set(dev, wiphy_net(wiphy));
1569 dev->ieee80211_ptr = priv->wdev;
1570 dev->ieee80211_ptr->iftype = priv->bss_mode;
1571 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1572 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1573 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1574
1575 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1576 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1577 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1578
1579 mdev_priv = netdev_priv(dev);
1580 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1581
1582 SET_NETDEV_DEV(dev, adapter->dev);
1583
1584 /* Register network device */
1585 if (register_netdevice(dev)) {
1586 wiphy_err(wiphy, "cannot register virtual network device\n");
1587 free_netdev(dev);
1588 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1589 return ERR_PTR(-EFAULT);
1590 }
1591
1592 sema_init(&priv->async_sem, 1);
1593 priv->scan_pending_on_block = false;
1594
1595 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1596
1597#ifdef CONFIG_DEBUG_FS
1598 mwifiex_dev_debugfs_init(priv);
1599#endif
1600 return dev;
1601}
1602EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1603
1604/*
1605 * del_virtual_intf: remove the virtual interface determined by dev
1606 */
1607int 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}
1636EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1637
1638/* station cfg80211 operations */
1639static 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 .join_ibss = mwifiex_cfg80211_join_ibss,
1650 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1651 .add_key = mwifiex_cfg80211_add_key,
1652 .del_key = mwifiex_cfg80211_del_key,
1653 .set_default_key = mwifiex_cfg80211_set_default_key,
1654 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1655 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1656 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1657 .start_ap = mwifiex_cfg80211_start_ap,
1658 .stop_ap = mwifiex_cfg80211_stop_ap,
1659 .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1660};
1661
1662/*
1663 * This function registers the device with CFG802.11 subsystem.
1664 *
1665 * The function creates the wireless device/wiphy, populates it with
1666 * default parameters and handler function pointers, and finally
1667 * registers the device.
1668 */
1669
1670int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
1671{
1672 int ret;
1673 void *wdev_priv;
1674 struct wiphy *wiphy;
1675 struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1676 u8 *country_code;
1677
1678 /* create a new wiphy for use with cfg80211 */
1679 wiphy = wiphy_new(&mwifiex_cfg80211_ops,
1680 sizeof(struct mwifiex_adapter *));
1681 if (!wiphy) {
1682 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
1683 return -ENOMEM;
1684 }
1685 wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
1686 wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1687 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1688 BIT(NL80211_IFTYPE_ADHOC) |
1689 BIT(NL80211_IFTYPE_AP);
1690
1691 wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1692 if (adapter->config_bands & BAND_A)
1693 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1694 else
1695 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1696
1697 wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
1698 wiphy->n_iface_combinations = 1;
1699
1700 /* Initialize cipher suits */
1701 wiphy->cipher_suites = mwifiex_cipher_suites;
1702 wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1703
1704 memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1705 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1706 wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME | WIPHY_FLAG_CUSTOM_REGULATORY;
1707
1708 /* Reserve space for mwifiex specific private data for BSS */
1709 wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1710
1711 wiphy->reg_notifier = mwifiex_reg_notifier;
1712
1713 /* Set struct mwifiex_adapter pointer in wiphy_priv */
1714 wdev_priv = wiphy_priv(wiphy);
1715 *(unsigned long *)wdev_priv = (unsigned long)adapter;
1716
1717 set_wiphy_dev(wiphy, (struct device *)priv->adapter->dev);
1718
1719 ret = wiphy_register(wiphy);
1720 if (ret < 0) {
1721 dev_err(adapter->dev,
1722 "%s: wiphy_register failed: %d\n", __func__, ret);
1723 wiphy_free(wiphy);
1724 return ret;
1725 }
1726 country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1727 if (country_code && regulatory_hint(wiphy, country_code))
1728 dev_err(adapter->dev, "regulatory_hint() failed\n");
1729
1730 adapter->wiphy = wiphy;
1731 return ret;
1732}