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Merge tag 'defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[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 * 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 */
402 static int
403 mwifiex_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 */
420 static int
421 mwifiex_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 */
437 static int
438 mwifiex_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 */
524 static int
525 mwifiex_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 */
607 static int
608 mwifiex_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 7.
638 */
639 if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
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 */
684 static int
685 mwifiex_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 */
701 static int
702 mwifiex_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
717 static 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
734 static 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
751 static 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
758 static 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
792 static 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
802 static 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 */
815 static 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 */
866 static 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 */
902 static 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 */
923 static 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 if (mwifiex_set_secure_params(priv, bss_cfg, params)) {
952 kfree(bss_cfg);
953 wiphy_err(wiphy, "Failed to parse secuirty parameters!\n");
954 return -1;
955 }
956
957 if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_UAP_BSS_STOP,
958 HostCmd_ACT_GEN_SET, 0, NULL)) {
959 wiphy_err(wiphy, "Failed to stop the BSS\n");
960 kfree(bss_cfg);
961 return -1;
962 }
963
964 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG,
965 HostCmd_ACT_GEN_SET,
966 UAP_BSS_PARAMS_I, bss_cfg)) {
967 wiphy_err(wiphy, "Failed to set the SSID\n");
968 kfree(bss_cfg);
969 return -1;
970 }
971
972 kfree(bss_cfg);
973
974 if (mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_BSS_START,
975 HostCmd_ACT_GEN_SET, 0, NULL)) {
976 wiphy_err(wiphy, "Failed to start the BSS\n");
977 return -1;
978 }
979
980 return 0;
981 }
982
983 /*
984 * CFG802.11 operation handler for disconnection request.
985 *
986 * This function does not work when there is already a disconnection
987 * procedure going on.
988 */
989 static int
990 mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
991 u16 reason_code)
992 {
993 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
994
995 if (mwifiex_deauthenticate(priv, NULL))
996 return -EFAULT;
997
998 wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
999 " reason code %d\n", priv->cfg_bssid, reason_code);
1000
1001 memset(priv->cfg_bssid, 0, ETH_ALEN);
1002
1003 return 0;
1004 }
1005
1006 /*
1007 * This function informs the CFG802.11 subsystem of a new IBSS.
1008 *
1009 * The following information are sent to the CFG802.11 subsystem
1010 * to register the new IBSS. If we do not register the new IBSS,
1011 * a kernel panic will result.
1012 * - SSID
1013 * - SSID length
1014 * - BSSID
1015 * - Channel
1016 */
1017 static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
1018 {
1019 struct ieee80211_channel *chan;
1020 struct mwifiex_bss_info bss_info;
1021 struct cfg80211_bss *bss;
1022 int ie_len;
1023 u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
1024 enum ieee80211_band band;
1025
1026 if (mwifiex_get_bss_info(priv, &bss_info))
1027 return -1;
1028
1029 ie_buf[0] = WLAN_EID_SSID;
1030 ie_buf[1] = bss_info.ssid.ssid_len;
1031
1032 memcpy(&ie_buf[sizeof(struct ieee_types_header)],
1033 &bss_info.ssid.ssid, bss_info.ssid.ssid_len);
1034 ie_len = ie_buf[1] + sizeof(struct ieee_types_header);
1035
1036 band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1037 chan = __ieee80211_get_channel(priv->wdev->wiphy,
1038 ieee80211_channel_to_frequency(bss_info.bss_chan,
1039 band));
1040
1041 bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
1042 bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
1043 0, ie_buf, ie_len, 0, GFP_KERNEL);
1044 cfg80211_put_bss(bss);
1045 memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);
1046
1047 return 0;
1048 }
1049
1050 /*
1051 * This function connects with a BSS.
1052 *
1053 * This function handles both Infra and Ad-Hoc modes. It also performs
1054 * validity checking on the provided parameters, disconnects from the
1055 * current BSS (if any), sets up the association/scan parameters,
1056 * including security settings, and performs specific SSID scan before
1057 * trying to connect.
1058 *
1059 * For Infra mode, the function returns failure if the specified SSID
1060 * is not found in scan table. However, for Ad-Hoc mode, it can create
1061 * the IBSS if it does not exist. On successful completion in either case,
1062 * the function notifies the CFG802.11 subsystem of the new BSS connection.
1063 */
1064 static int
1065 mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
1066 u8 *bssid, int mode, struct ieee80211_channel *channel,
1067 struct cfg80211_connect_params *sme, bool privacy)
1068 {
1069 struct cfg80211_ssid req_ssid;
1070 int ret, auth_type = 0;
1071 struct cfg80211_bss *bss = NULL;
1072 u8 is_scanning_required = 0;
1073
1074 memset(&req_ssid, 0, sizeof(struct cfg80211_ssid));
1075
1076 req_ssid.ssid_len = ssid_len;
1077 if (ssid_len > IEEE80211_MAX_SSID_LEN) {
1078 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1079 return -EINVAL;
1080 }
1081
1082 memcpy(req_ssid.ssid, ssid, ssid_len);
1083 if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
1084 dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
1085 return -EINVAL;
1086 }
1087
1088 /* disconnect before try to associate */
1089 mwifiex_deauthenticate(priv, NULL);
1090
1091 if (channel)
1092 ret = mwifiex_set_rf_channel(priv, channel,
1093 priv->adapter->channel_type);
1094
1095 /* As this is new association, clear locally stored
1096 * keys and security related flags */
1097 priv->sec_info.wpa_enabled = false;
1098 priv->sec_info.wpa2_enabled = false;
1099 priv->wep_key_curr_index = 0;
1100 priv->sec_info.encryption_mode = 0;
1101 priv->sec_info.is_authtype_auto = 0;
1102 ret = mwifiex_set_encode(priv, NULL, 0, 0, NULL, 1);
1103
1104 if (mode == NL80211_IFTYPE_ADHOC) {
1105 /* "privacy" is set only for ad-hoc mode */
1106 if (privacy) {
1107 /*
1108 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
1109 * the firmware can find a matching network from the
1110 * scan. The cfg80211 does not give us the encryption
1111 * mode at this stage so just setting it to WEP here.
1112 */
1113 priv->sec_info.encryption_mode =
1114 WLAN_CIPHER_SUITE_WEP104;
1115 priv->sec_info.authentication_mode =
1116 NL80211_AUTHTYPE_OPEN_SYSTEM;
1117 }
1118
1119 goto done;
1120 }
1121
1122 /* Now handle infra mode. "sme" is valid for infra mode only */
1123 if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC) {
1124 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1125 priv->sec_info.is_authtype_auto = 1;
1126 } else {
1127 auth_type = sme->auth_type;
1128 }
1129
1130 if (sme->crypto.n_ciphers_pairwise) {
1131 priv->sec_info.encryption_mode =
1132 sme->crypto.ciphers_pairwise[0];
1133 priv->sec_info.authentication_mode = auth_type;
1134 }
1135
1136 if (sme->crypto.cipher_group) {
1137 priv->sec_info.encryption_mode = sme->crypto.cipher_group;
1138 priv->sec_info.authentication_mode = auth_type;
1139 }
1140 if (sme->ie)
1141 ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);
1142
1143 if (sme->key) {
1144 if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
1145 dev_dbg(priv->adapter->dev,
1146 "info: setting wep encryption"
1147 " with key len %d\n", sme->key_len);
1148 priv->wep_key_curr_index = sme->key_idx;
1149 ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
1150 sme->key_idx, NULL, 0);
1151 }
1152 }
1153 done:
1154 /*
1155 * Scan entries are valid for some time (15 sec). So we can save one
1156 * active scan time if we just try cfg80211_get_bss first. If it fails
1157 * then request scan and cfg80211_get_bss() again for final output.
1158 */
1159 while (1) {
1160 if (is_scanning_required) {
1161 /* Do specific SSID scanning */
1162 if (mwifiex_request_scan(priv, &req_ssid)) {
1163 dev_err(priv->adapter->dev, "scan error\n");
1164 return -EFAULT;
1165 }
1166 }
1167
1168 /* Find the BSS we want using available scan results */
1169 if (mode == NL80211_IFTYPE_ADHOC)
1170 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1171 bssid, ssid, ssid_len,
1172 WLAN_CAPABILITY_IBSS,
1173 WLAN_CAPABILITY_IBSS);
1174 else
1175 bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
1176 bssid, ssid, ssid_len,
1177 WLAN_CAPABILITY_ESS,
1178 WLAN_CAPABILITY_ESS);
1179
1180 if (!bss) {
1181 if (is_scanning_required) {
1182 dev_warn(priv->adapter->dev,
1183 "assoc: requested bss not found in scan results\n");
1184 break;
1185 }
1186 is_scanning_required = 1;
1187 } else {
1188 dev_dbg(priv->adapter->dev,
1189 "info: trying to associate to '%s' bssid %pM\n",
1190 (char *) req_ssid.ssid, bss->bssid);
1191 memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
1192 break;
1193 }
1194 }
1195
1196 if (mwifiex_bss_start(priv, bss, &req_ssid))
1197 return -EFAULT;
1198
1199 if (mode == NL80211_IFTYPE_ADHOC) {
1200 /* Inform the BSS information to kernel, otherwise
1201 * kernel will give a panic after successful assoc */
1202 if (mwifiex_cfg80211_inform_ibss_bss(priv))
1203 return -EFAULT;
1204 }
1205
1206 return ret;
1207 }
1208
1209 /*
1210 * CFG802.11 operation handler for association request.
1211 *
1212 * This function does not work when the current mode is set to Ad-Hoc, or
1213 * when there is already an association procedure going on. The given BSS
1214 * information is used to associate.
1215 */
1216 static int
1217 mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
1218 struct cfg80211_connect_params *sme)
1219 {
1220 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1221 int ret = 0;
1222
1223 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1224 wiphy_err(wiphy, "received infra assoc request "
1225 "when station is in ibss mode\n");
1226 goto done;
1227 }
1228
1229 if (priv->bss_mode == NL80211_IFTYPE_AP) {
1230 wiphy_err(wiphy, "skip association request for AP interface\n");
1231 goto done;
1232 }
1233
1234 wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
1235 (char *) sme->ssid, sme->bssid);
1236
1237 ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
1238 priv->bss_mode, sme->channel, sme, 0);
1239 done:
1240 if (!ret) {
1241 cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
1242 NULL, 0, WLAN_STATUS_SUCCESS,
1243 GFP_KERNEL);
1244 dev_dbg(priv->adapter->dev,
1245 "info: associated to bssid %pM successfully\n",
1246 priv->cfg_bssid);
1247 } else {
1248 dev_dbg(priv->adapter->dev,
1249 "info: association to bssid %pM failed\n",
1250 priv->cfg_bssid);
1251 memset(priv->cfg_bssid, 0, ETH_ALEN);
1252 }
1253
1254 return ret;
1255 }
1256
1257 /*
1258 * CFG802.11 operation handler to join an IBSS.
1259 *
1260 * This function does not work in any mode other than Ad-Hoc, or if
1261 * a join operation is already in progress.
1262 */
1263 static int
1264 mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1265 struct cfg80211_ibss_params *params)
1266 {
1267 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1268 int ret = 0;
1269
1270 if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1271 wiphy_err(wiphy, "request to join ibss received "
1272 "when station is not in ibss mode\n");
1273 goto done;
1274 }
1275
1276 wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
1277 (char *) params->ssid, params->bssid);
1278
1279 ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1280 params->bssid, priv->bss_mode,
1281 params->channel, NULL, params->privacy);
1282 done:
1283 if (!ret) {
1284 cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
1285 dev_dbg(priv->adapter->dev,
1286 "info: joined/created adhoc network with bssid"
1287 " %pM successfully\n", priv->cfg_bssid);
1288 } else {
1289 dev_dbg(priv->adapter->dev,
1290 "info: failed creating/joining adhoc network\n");
1291 }
1292
1293 return ret;
1294 }
1295
1296 /*
1297 * CFG802.11 operation handler to leave an IBSS.
1298 *
1299 * This function does not work if a leave operation is
1300 * already in progress.
1301 */
1302 static int
1303 mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1304 {
1305 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1306
1307 wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
1308 priv->cfg_bssid);
1309 if (mwifiex_deauthenticate(priv, NULL))
1310 return -EFAULT;
1311
1312 memset(priv->cfg_bssid, 0, ETH_ALEN);
1313
1314 return 0;
1315 }
1316
1317 /*
1318 * CFG802.11 operation handler for scan request.
1319 *
1320 * This function issues a scan request to the firmware based upon
1321 * the user specified scan configuration. On successfull completion,
1322 * it also informs the results.
1323 */
1324 static int
1325 mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
1326 struct cfg80211_scan_request *request)
1327 {
1328 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1329 int i;
1330 struct ieee80211_channel *chan;
1331
1332 wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);
1333
1334 priv->scan_request = request;
1335
1336 priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
1337 GFP_KERNEL);
1338 if (!priv->user_scan_cfg) {
1339 dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
1340 return -ENOMEM;
1341 }
1342
1343 priv->user_scan_cfg->num_ssids = request->n_ssids;
1344 priv->user_scan_cfg->ssid_list = request->ssids;
1345
1346 if (request->ie && request->ie_len) {
1347 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1348 if (priv->vs_ie[i].mask != MWIFIEX_VSIE_MASK_CLEAR)
1349 continue;
1350 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_SCAN;
1351 memcpy(&priv->vs_ie[i].ie, request->ie,
1352 request->ie_len);
1353 break;
1354 }
1355 }
1356
1357 for (i = 0; i < request->n_channels; i++) {
1358 chan = request->channels[i];
1359 priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
1360 priv->user_scan_cfg->chan_list[i].radio_type = chan->band;
1361
1362 if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
1363 priv->user_scan_cfg->chan_list[i].scan_type =
1364 MWIFIEX_SCAN_TYPE_PASSIVE;
1365 else
1366 priv->user_scan_cfg->chan_list[i].scan_type =
1367 MWIFIEX_SCAN_TYPE_ACTIVE;
1368
1369 priv->user_scan_cfg->chan_list[i].scan_time = 0;
1370 }
1371 if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
1372 return -EFAULT;
1373
1374 if (request->ie && request->ie_len) {
1375 for (i = 0; i < MWIFIEX_MAX_VSIE_NUM; i++) {
1376 if (priv->vs_ie[i].mask == MWIFIEX_VSIE_MASK_SCAN) {
1377 priv->vs_ie[i].mask = MWIFIEX_VSIE_MASK_CLEAR;
1378 memset(&priv->vs_ie[i].ie, 0,
1379 MWIFIEX_MAX_VSIE_LEN);
1380 }
1381 }
1382 }
1383 return 0;
1384 }
1385
1386 /*
1387 * This function sets up the CFG802.11 specific HT capability fields
1388 * with default values.
1389 *
1390 * The following default values are set -
1391 * - HT Supported = True
1392 * - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
1393 * - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
1394 * - HT Capabilities supported by firmware
1395 * - MCS information, Rx mask = 0xff
1396 * - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
1397 */
1398 static void
1399 mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
1400 struct mwifiex_private *priv)
1401 {
1402 int rx_mcs_supp;
1403 struct ieee80211_mcs_info mcs_set;
1404 u8 *mcs = (u8 *)&mcs_set;
1405 struct mwifiex_adapter *adapter = priv->adapter;
1406
1407 ht_info->ht_supported = true;
1408 ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1409 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1410
1411 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1412
1413 /* Fill HT capability information */
1414 if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1415 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1416 else
1417 ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1418
1419 if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
1420 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1421 else
1422 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;
1423
1424 if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
1425 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1426 else
1427 ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;
1428
1429 if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
1430 ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
1431 else
1432 ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
1433
1434 if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
1435 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
1436 else
1437 ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;
1438
1439 ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
1440 ht_info->cap |= IEEE80211_HT_CAP_SM_PS;
1441
1442 rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1443 /* Set MCS for 1x1 */
1444 memset(mcs, 0xff, rx_mcs_supp);
1445 /* Clear all the other values */
1446 memset(&mcs[rx_mcs_supp], 0,
1447 sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1448 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1449 ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1450 /* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
1451 SETHT_MCS32(mcs_set.rx_mask);
1452
1453 memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));
1454
1455 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1456 }
1457
1458 /*
1459 * create a new virtual interface with the given name
1460 */
1461 struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
1462 char *name,
1463 enum nl80211_iftype type,
1464 u32 *flags,
1465 struct vif_params *params)
1466 {
1467 struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
1468 struct mwifiex_private *priv;
1469 struct net_device *dev;
1470 void *mdev_priv;
1471 struct wireless_dev *wdev;
1472
1473 if (!adapter)
1474 return NULL;
1475
1476 switch (type) {
1477 case NL80211_IFTYPE_UNSPECIFIED:
1478 case NL80211_IFTYPE_STATION:
1479 case NL80211_IFTYPE_ADHOC:
1480 priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1481 if (priv->bss_mode) {
1482 wiphy_err(wiphy,
1483 "cannot create multiple sta/adhoc ifaces\n");
1484 return NULL;
1485 }
1486
1487 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1488 if (!wdev)
1489 return NULL;
1490
1491 wdev->wiphy = wiphy;
1492 priv->wdev = wdev;
1493 wdev->iftype = NL80211_IFTYPE_STATION;
1494
1495 if (type == NL80211_IFTYPE_UNSPECIFIED)
1496 priv->bss_mode = NL80211_IFTYPE_STATION;
1497 else
1498 priv->bss_mode = type;
1499
1500 priv->bss_type = MWIFIEX_BSS_TYPE_STA;
1501 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1502 priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
1503 priv->bss_role = MWIFIEX_BSS_ROLE_STA;
1504 priv->bss_num = 0;
1505
1506 break;
1507 case NL80211_IFTYPE_AP:
1508 priv = adapter->priv[MWIFIEX_BSS_TYPE_UAP];
1509
1510 if (priv->bss_mode) {
1511 wiphy_err(wiphy, "Can't create multiple AP interfaces");
1512 return NULL;
1513 }
1514
1515 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1516 if (!wdev)
1517 return NULL;
1518
1519 priv->wdev = wdev;
1520 wdev->wiphy = wiphy;
1521 wdev->iftype = NL80211_IFTYPE_AP;
1522
1523 priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
1524 priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
1525 priv->bss_priority = MWIFIEX_BSS_ROLE_UAP;
1526 priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
1527 priv->bss_started = 0;
1528 priv->bss_num = 0;
1529 priv->bss_mode = type;
1530
1531 break;
1532 default:
1533 wiphy_err(wiphy, "type not supported\n");
1534 return NULL;
1535 }
1536
1537 dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
1538 ether_setup, 1);
1539 if (!dev) {
1540 wiphy_err(wiphy, "no memory available for netdevice\n");
1541 goto error;
1542 }
1543
1544 mwifiex_init_priv_params(priv, dev);
1545 priv->netdev = dev;
1546
1547 mwifiex_setup_ht_caps(&wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);
1548
1549 if (adapter->config_bands & BAND_A)
1550 mwifiex_setup_ht_caps(
1551 &wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
1552
1553 dev_net_set(dev, wiphy_net(wiphy));
1554 dev->ieee80211_ptr = priv->wdev;
1555 dev->ieee80211_ptr->iftype = priv->bss_mode;
1556 memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
1557 memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
1558 SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
1559
1560 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1561 dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
1562 dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;
1563
1564 mdev_priv = netdev_priv(dev);
1565 *((unsigned long *) mdev_priv) = (unsigned long) priv;
1566
1567 SET_NETDEV_DEV(dev, adapter->dev);
1568
1569 /* Register network device */
1570 if (register_netdevice(dev)) {
1571 wiphy_err(wiphy, "cannot register virtual network device\n");
1572 goto error;
1573 }
1574
1575 sema_init(&priv->async_sem, 1);
1576 priv->scan_pending_on_block = false;
1577
1578 dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);
1579
1580 #ifdef CONFIG_DEBUG_FS
1581 mwifiex_dev_debugfs_init(priv);
1582 #endif
1583 return dev;
1584 error:
1585 if (dev && (dev->reg_state == NETREG_UNREGISTERED))
1586 free_netdev(dev);
1587 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1588
1589 return NULL;
1590 }
1591 EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);
1592
1593 /*
1594 * del_virtual_intf: remove the virtual interface determined by dev
1595 */
1596 int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
1597 {
1598 struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
1599
1600 #ifdef CONFIG_DEBUG_FS
1601 mwifiex_dev_debugfs_remove(priv);
1602 #endif
1603
1604 if (!netif_queue_stopped(priv->netdev))
1605 netif_stop_queue(priv->netdev);
1606
1607 if (netif_carrier_ok(priv->netdev))
1608 netif_carrier_off(priv->netdev);
1609
1610 if (dev->reg_state == NETREG_REGISTERED)
1611 unregister_netdevice(dev);
1612
1613 if (dev->reg_state == NETREG_UNREGISTERED)
1614 free_netdev(dev);
1615
1616 /* Clear the priv in adapter */
1617 priv->netdev = NULL;
1618
1619 priv->media_connected = false;
1620
1621 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
1622
1623 return 0;
1624 }
1625 EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);
1626
1627 /* station cfg80211 operations */
1628 static struct cfg80211_ops mwifiex_cfg80211_ops = {
1629 .add_virtual_intf = mwifiex_add_virtual_intf,
1630 .del_virtual_intf = mwifiex_del_virtual_intf,
1631 .change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
1632 .scan = mwifiex_cfg80211_scan,
1633 .connect = mwifiex_cfg80211_connect,
1634 .disconnect = mwifiex_cfg80211_disconnect,
1635 .get_station = mwifiex_cfg80211_get_station,
1636 .dump_station = mwifiex_cfg80211_dump_station,
1637 .set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
1638 .join_ibss = mwifiex_cfg80211_join_ibss,
1639 .leave_ibss = mwifiex_cfg80211_leave_ibss,
1640 .add_key = mwifiex_cfg80211_add_key,
1641 .del_key = mwifiex_cfg80211_del_key,
1642 .set_default_key = mwifiex_cfg80211_set_default_key,
1643 .set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
1644 .set_tx_power = mwifiex_cfg80211_set_tx_power,
1645 .set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1646 .start_ap = mwifiex_cfg80211_start_ap,
1647 .stop_ap = mwifiex_cfg80211_stop_ap,
1648 .set_cqm_rssi_config = mwifiex_cfg80211_set_cqm_rssi_config,
1649 };
1650
1651 /*
1652 * This function registers the device with CFG802.11 subsystem.
1653 *
1654 * The function creates the wireless device/wiphy, populates it with
1655 * default parameters and handler function pointers, and finally
1656 * registers the device.
1657 */
1658
1659 int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
1660 {
1661 int ret;
1662 void *wdev_priv;
1663 struct wiphy *wiphy;
1664 struct mwifiex_private *priv = adapter->priv[MWIFIEX_BSS_TYPE_STA];
1665 u8 *country_code;
1666
1667 /* create a new wiphy for use with cfg80211 */
1668 wiphy = wiphy_new(&mwifiex_cfg80211_ops,
1669 sizeof(struct mwifiex_adapter *));
1670 if (!wiphy) {
1671 dev_err(adapter->dev, "%s: creating new wiphy\n", __func__);
1672 return -ENOMEM;
1673 }
1674 wiphy->max_scan_ssids = MWIFIEX_MAX_SSID_LIST_LENGTH;
1675 wiphy->max_scan_ie_len = MWIFIEX_MAX_VSIE_LEN;
1676 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1677 BIT(NL80211_IFTYPE_ADHOC) |
1678 BIT(NL80211_IFTYPE_AP);
1679
1680 wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1681 if (adapter->config_bands & BAND_A)
1682 wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
1683 else
1684 wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
1685
1686 wiphy->iface_combinations = &mwifiex_iface_comb_ap_sta;
1687 wiphy->n_iface_combinations = 1;
1688
1689 /* Initialize cipher suits */
1690 wiphy->cipher_suites = mwifiex_cipher_suites;
1691 wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);
1692
1693 memcpy(wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1694 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1695 wiphy->flags |= WIPHY_FLAG_HAVE_AP_SME | WIPHY_FLAG_CUSTOM_REGULATORY;
1696
1697 /* Reserve space for mwifiex specific private data for BSS */
1698 wiphy->bss_priv_size = sizeof(struct mwifiex_bss_priv);
1699
1700 wiphy->reg_notifier = mwifiex_reg_notifier;
1701
1702 /* Set struct mwifiex_adapter pointer in wiphy_priv */
1703 wdev_priv = wiphy_priv(wiphy);
1704 *(unsigned long *)wdev_priv = (unsigned long)adapter;
1705
1706 set_wiphy_dev(wiphy, (struct device *)priv->adapter->dev);
1707
1708 ret = wiphy_register(wiphy);
1709 if (ret < 0) {
1710 dev_err(adapter->dev,
1711 "%s: wiphy_register failed: %d\n", __func__, ret);
1712 wiphy_free(wiphy);
1713 return ret;
1714 }
1715 country_code = mwifiex_11d_code_2_region(priv->adapter->region_code);
1716 if (country_code && regulatory_hint(wiphy, country_code))
1717 dev_err(adapter->dev, "regulatory_hint() failed\n");
1718
1719 adapter->wiphy = wiphy;
1720 return ret;
1721 }
Linux kernel - Deliverables
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