1 /*
2 * Marvell Wireless LAN device driver: functions for station ioctl
3 *
4 * Copyright (C) 2011-2014, 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 "decl.h"
21 #include "ioctl.h"
22 #include "util.h"
23 #include "fw.h"
24 #include "main.h"
25 #include "wmm.h"
26 #include "11n.h"
27 #include "cfg80211.h"
28
29 static int disconnect_on_suspend;
30 module_param(disconnect_on_suspend, int, 0644);
31
32 /*
33 * Copies the multicast address list from device to driver.
34 *
35 * This function does not validate the destination memory for
36 * size, and the calling function must ensure enough memory is
37 * available.
38 */
mwifiex_copy_mcast_addr(struct mwifiex_multicast_list * mlist,struct net_device * dev)39 int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
40 struct net_device *dev)
41 {
42 int i = 0;
43 struct netdev_hw_addr *ha;
44
45 netdev_for_each_mc_addr(ha, dev)
46 memcpy(&mlist->mac_list[i++], ha->addr, ETH_ALEN);
47
48 return i;
49 }
50
51 /*
52 * Wait queue completion handler.
53 *
54 * This function waits on a cmd wait queue. It also cancels the pending
55 * request after waking up, in case of errors.
56 */
mwifiex_wait_queue_complete(struct mwifiex_adapter * adapter,struct cmd_ctrl_node * cmd_queued)57 int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter,
58 struct cmd_ctrl_node *cmd_queued)
59 {
60 int status;
61
62 /* Wait for completion */
63 status = wait_event_interruptible_timeout(adapter->cmd_wait_q.wait,
64 *(cmd_queued->condition),
65 (12 * HZ));
66 if (status <= 0) {
67 dev_err(adapter->dev, "cmd_wait_q terminated: %d\n", status);
68 mwifiex_cancel_all_pending_cmd(adapter);
69 return status;
70 }
71
72 status = adapter->cmd_wait_q.status;
73 adapter->cmd_wait_q.status = 0;
74
75 return status;
76 }
77
78 /*
79 * This function prepares the correct firmware command and
80 * issues it to set the multicast list.
81 *
82 * This function can be used to enable promiscuous mode, or enable all
83 * multicast packets, or to enable selective multicast.
84 */
mwifiex_request_set_multicast_list(struct mwifiex_private * priv,struct mwifiex_multicast_list * mcast_list)85 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
86 struct mwifiex_multicast_list *mcast_list)
87 {
88 int ret = 0;
89 u16 old_pkt_filter;
90
91 old_pkt_filter = priv->curr_pkt_filter;
92
93 if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
94 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
95 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
96 priv->curr_pkt_filter &=
97 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
98 } else {
99 /* Multicast */
100 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
101 if (mcast_list->mode == MWIFIEX_ALL_MULTI_MODE) {
102 dev_dbg(priv->adapter->dev,
103 "info: Enabling All Multicast!\n");
104 priv->curr_pkt_filter |=
105 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
106 } else {
107 priv->curr_pkt_filter &=
108 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
109 dev_dbg(priv->adapter->dev,
110 "info: Set multicast list=%d\n",
111 mcast_list->num_multicast_addr);
112 /* Send multicast addresses to firmware */
113 ret = mwifiex_send_cmd(priv,
114 HostCmd_CMD_MAC_MULTICAST_ADR,
115 HostCmd_ACT_GEN_SET, 0,
116 mcast_list, false);
117 }
118 }
119 dev_dbg(priv->adapter->dev,
120 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
121 old_pkt_filter, priv->curr_pkt_filter);
122 if (old_pkt_filter != priv->curr_pkt_filter) {
123 ret = mwifiex_send_cmd(priv, HostCmd_CMD_MAC_CONTROL,
124 HostCmd_ACT_GEN_SET,
125 0, &priv->curr_pkt_filter, false);
126 }
127
128 return ret;
129 }
130
131 /*
132 * This function fills bss descriptor structure using provided
133 * information.
134 * beacon_ie buffer is allocated in this function. It is caller's
135 * responsibility to free the memory.
136 */
mwifiex_fill_new_bss_desc(struct mwifiex_private * priv,struct cfg80211_bss * bss,struct mwifiex_bssdescriptor * bss_desc)137 int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
138 struct cfg80211_bss *bss,
139 struct mwifiex_bssdescriptor *bss_desc)
140 {
141 u8 *beacon_ie;
142 size_t beacon_ie_len;
143 struct mwifiex_bss_priv *bss_priv = (void *)bss->priv;
144 const struct cfg80211_bss_ies *ies;
145
146 rcu_read_lock();
147 ies = rcu_dereference(bss->ies);
148 beacon_ie = kmemdup(ies->data, ies->len, GFP_ATOMIC);
149 beacon_ie_len = ies->len;
150 bss_desc->timestamp = ies->tsf;
151 rcu_read_unlock();
152
153 if (!beacon_ie) {
154 dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
155 return -ENOMEM;
156 }
157
158 memcpy(bss_desc->mac_address, bss->bssid, ETH_ALEN);
159 bss_desc->rssi = bss->signal;
160 /* The caller of this function will free beacon_ie */
161 bss_desc->beacon_buf = beacon_ie;
162 bss_desc->beacon_buf_size = beacon_ie_len;
163 bss_desc->beacon_period = bss->beacon_interval;
164 bss_desc->cap_info_bitmap = bss->capability;
165 bss_desc->bss_band = bss_priv->band;
166 bss_desc->fw_tsf = bss_priv->fw_tsf;
167 if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
168 dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
169 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
170 } else {
171 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
172 }
173 if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
174 bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
175 else
176 bss_desc->bss_mode = NL80211_IFTYPE_STATION;
177
178 /* Disable 11ac by default. Enable it only where there
179 * exist VHT_CAP IE in AP beacon
180 */
181 bss_desc->disable_11ac = true;
182
183 if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_SPECTRUM_MGMT)
184 bss_desc->sensed_11h = true;
185
186 return mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc);
187 }
188
mwifiex_dnld_txpwr_table(struct mwifiex_private * priv)189 void mwifiex_dnld_txpwr_table(struct mwifiex_private *priv)
190 {
191 if (priv->adapter->dt_node) {
192 char txpwr[] = {"marvell,00_txpwrlimit"};
193
194 memcpy(&txpwr[8], priv->adapter->country_code, 2);
195 mwifiex_dnld_dt_cfgdata(priv, priv->adapter->dt_node, txpwr);
196 }
197 }
198
mwifiex_process_country_ie(struct mwifiex_private * priv,struct cfg80211_bss * bss)199 static int mwifiex_process_country_ie(struct mwifiex_private *priv,
200 struct cfg80211_bss *bss)
201 {
202 const u8 *country_ie;
203 u8 country_ie_len;
204 struct mwifiex_802_11d_domain_reg *domain_info =
205 &priv->adapter->domain_reg;
206
207 rcu_read_lock();
208 country_ie = ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
209 if (!country_ie) {
210 rcu_read_unlock();
211 return 0;
212 }
213
214 country_ie_len = country_ie[1];
215 if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) {
216 rcu_read_unlock();
217 return 0;
218 }
219
220 if (!strncmp(priv->adapter->country_code, &country_ie[2], 2)) {
221 rcu_read_unlock();
222 wiphy_dbg(priv->wdev->wiphy,
223 "11D: skip setting domain info in FW\n");
224 return 0;
225 }
226 memcpy(priv->adapter->country_code, &country_ie[2], 2);
227
228 domain_info->country_code[0] = country_ie[2];
229 domain_info->country_code[1] = country_ie[3];
230 domain_info->country_code[2] = ' ';
231
232 country_ie_len -= IEEE80211_COUNTRY_STRING_LEN;
233
234 domain_info->no_of_triplet =
235 country_ie_len / sizeof(struct ieee80211_country_ie_triplet);
236
237 memcpy((u8 *)domain_info->triplet,
238 &country_ie[2] + IEEE80211_COUNTRY_STRING_LEN, country_ie_len);
239
240 rcu_read_unlock();
241
242 if (mwifiex_send_cmd(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
243 HostCmd_ACT_GEN_SET, 0, NULL, false)) {
244 wiphy_err(priv->adapter->wiphy,
245 "11D: setting domain info in FW\n");
246 return -1;
247 }
248
249 mwifiex_dnld_txpwr_table(priv);
250
251 return 0;
252 }
253
254 /*
255 * In Ad-Hoc mode, the IBSS is created if not found in scan list.
256 * In both Ad-Hoc and infra mode, an deauthentication is performed
257 * first.
258 */
mwifiex_bss_start(struct mwifiex_private * priv,struct cfg80211_bss * bss,struct cfg80211_ssid * req_ssid)259 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
260 struct cfg80211_ssid *req_ssid)
261 {
262 int ret;
263 struct mwifiex_adapter *adapter = priv->adapter;
264 struct mwifiex_bssdescriptor *bss_desc = NULL;
265
266 priv->scan_block = false;
267
268 if (bss) {
269 mwifiex_process_country_ie(priv, bss);
270
271 /* Allocate and fill new bss descriptor */
272 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
273 GFP_KERNEL);
274 if (!bss_desc)
275 return -ENOMEM;
276
277 ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
278 if (ret)
279 goto done;
280 }
281
282 if (priv->bss_mode == NL80211_IFTYPE_STATION ||
283 priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
284 u8 config_bands;
285
286 if (!bss_desc)
287 return -1;
288
289 if (mwifiex_band_to_radio_type(bss_desc->bss_band) ==
290 HostCmd_SCAN_RADIO_TYPE_BG) {
291 config_bands = BAND_B | BAND_G | BAND_GN;
292 } else {
293 config_bands = BAND_A | BAND_AN;
294 if (adapter->fw_bands & BAND_AAC)
295 config_bands |= BAND_AAC;
296 }
297
298 if (!((config_bands | adapter->fw_bands) & ~adapter->fw_bands))
299 adapter->config_bands = config_bands;
300
301 ret = mwifiex_check_network_compatibility(priv, bss_desc);
302 if (ret)
303 goto done;
304
305 if (mwifiex_11h_get_csa_closed_channel(priv) ==
306 (u8)bss_desc->channel) {
307 dev_err(adapter->dev,
308 "Attempt to reconnect on csa closed chan(%d)\n",
309 bss_desc->channel);
310 goto done;
311 }
312
313 dev_dbg(adapter->dev, "info: SSID found in scan list ... "
314 "associating...\n");
315
316 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
317 if (netif_carrier_ok(priv->netdev))
318 netif_carrier_off(priv->netdev);
319
320 /* Clear any past association response stored for
321 * application retrieval */
322 priv->assoc_rsp_size = 0;
323 ret = mwifiex_associate(priv, bss_desc);
324
325 /* If auth type is auto and association fails using open mode,
326 * try to connect using shared mode */
327 if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
328 priv->sec_info.is_authtype_auto &&
329 priv->sec_info.wep_enabled) {
330 priv->sec_info.authentication_mode =
331 NL80211_AUTHTYPE_SHARED_KEY;
332 ret = mwifiex_associate(priv, bss_desc);
333 }
334
335 if (bss)
336 cfg80211_put_bss(priv->adapter->wiphy, bss);
337 } else {
338 /* Adhoc mode */
339 /* If the requested SSID matches current SSID, return */
340 if (bss_desc && bss_desc->ssid.ssid_len &&
341 (!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
342 ssid, &bss_desc->ssid))) {
343 ret = 0;
344 goto done;
345 }
346
347 priv->adhoc_is_link_sensed = false;
348
349 ret = mwifiex_check_network_compatibility(priv, bss_desc);
350
351 mwifiex_stop_net_dev_queue(priv->netdev, adapter);
352 if (netif_carrier_ok(priv->netdev))
353 netif_carrier_off(priv->netdev);
354
355 if (!ret) {
356 dev_dbg(adapter->dev, "info: network found in scan"
357 " list. Joining...\n");
358 ret = mwifiex_adhoc_join(priv, bss_desc);
359 if (bss)
360 cfg80211_put_bss(priv->adapter->wiphy, bss);
361 } else {
362 dev_dbg(adapter->dev, "info: Network not found in "
363 "the list, creating adhoc with ssid = %s\n",
364 req_ssid->ssid);
365 ret = mwifiex_adhoc_start(priv, req_ssid);
366 }
367 }
368
369 done:
370 /* beacon_ie buffer was allocated in function
371 * mwifiex_fill_new_bss_desc(). Free it now.
372 */
373 if (bss_desc)
374 kfree(bss_desc->beacon_buf);
375 kfree(bss_desc);
376 return ret;
377 }
378
379 /*
380 * IOCTL request handler to set host sleep configuration.
381 *
382 * This function prepares the correct firmware command and
383 * issues it.
384 */
mwifiex_set_hs_params(struct mwifiex_private * priv,u16 action,int cmd_type,struct mwifiex_ds_hs_cfg * hs_cfg)385 int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
386 int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
387
388 {
389 struct mwifiex_adapter *adapter = priv->adapter;
390 int status = 0;
391 u32 prev_cond = 0;
392
393 if (!hs_cfg)
394 return -ENOMEM;
395
396 switch (action) {
397 case HostCmd_ACT_GEN_SET:
398 if (adapter->pps_uapsd_mode) {
399 dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
400 " is blocked in UAPSD/PPS mode\n");
401 status = -1;
402 break;
403 }
404 if (hs_cfg->is_invoke_hostcmd) {
405 if (hs_cfg->conditions == HS_CFG_CANCEL) {
406 if (!adapter->is_hs_configured)
407 /* Already cancelled */
408 break;
409 /* Save previous condition */
410 prev_cond = le32_to_cpu(adapter->hs_cfg
411 .conditions);
412 adapter->hs_cfg.conditions =
413 cpu_to_le32(hs_cfg->conditions);
414 } else if (hs_cfg->conditions) {
415 adapter->hs_cfg.conditions =
416 cpu_to_le32(hs_cfg->conditions);
417 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
418 if (hs_cfg->gap)
419 adapter->hs_cfg.gap = (u8)hs_cfg->gap;
420 } else if (adapter->hs_cfg.conditions ==
421 cpu_to_le32(HS_CFG_CANCEL)) {
422 /* Return failure if no parameters for HS
423 enable */
424 status = -1;
425 break;
426 }
427
428 status = mwifiex_send_cmd(priv,
429 HostCmd_CMD_802_11_HS_CFG_ENH,
430 HostCmd_ACT_GEN_SET, 0,
431 &adapter->hs_cfg,
432 cmd_type == MWIFIEX_SYNC_CMD);
433
434 if (hs_cfg->conditions == HS_CFG_CANCEL)
435 /* Restore previous condition */
436 adapter->hs_cfg.conditions =
437 cpu_to_le32(prev_cond);
438 } else {
439 adapter->hs_cfg.conditions =
440 cpu_to_le32(hs_cfg->conditions);
441 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
442 adapter->hs_cfg.gap = (u8)hs_cfg->gap;
443 }
444 break;
445 case HostCmd_ACT_GEN_GET:
446 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
447 hs_cfg->gpio = adapter->hs_cfg.gpio;
448 hs_cfg->gap = adapter->hs_cfg.gap;
449 break;
450 default:
451 status = -1;
452 break;
453 }
454
455 return status;
456 }
457
458 /*
459 * Sends IOCTL request to cancel the existing Host Sleep configuration.
460 *
461 * This function allocates the IOCTL request buffer, fills it
462 * with requisite parameters and calls the IOCTL handler.
463 */
mwifiex_cancel_hs(struct mwifiex_private * priv,int cmd_type)464 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
465 {
466 struct mwifiex_ds_hs_cfg hscfg;
467
468 hscfg.conditions = HS_CFG_CANCEL;
469 hscfg.is_invoke_hostcmd = true;
470
471 return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
472 cmd_type, &hscfg);
473 }
474 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
475
476 /*
477 * Sends IOCTL request to cancel the existing Host Sleep configuration.
478 *
479 * This function allocates the IOCTL request buffer, fills it
480 * with requisite parameters and calls the IOCTL handler.
481 */
mwifiex_enable_hs(struct mwifiex_adapter * adapter)482 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
483 {
484 struct mwifiex_ds_hs_cfg hscfg;
485 struct mwifiex_private *priv;
486 int i;
487
488 if (disconnect_on_suspend) {
489 for (i = 0; i < adapter->priv_num; i++) {
490 priv = adapter->priv[i];
491 if (priv)
492 mwifiex_deauthenticate(priv, NULL);
493 }
494 }
495
496 if (adapter->hs_activated) {
497 dev_dbg(adapter->dev, "cmd: HS Already activated\n");
498 return true;
499 }
500
501 adapter->hs_activate_wait_q_woken = false;
502
503 memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
504 hscfg.is_invoke_hostcmd = true;
505
506 adapter->hs_enabling = true;
507 mwifiex_cancel_all_pending_cmd(adapter);
508
509 if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
510 MWIFIEX_BSS_ROLE_STA),
511 HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
512 &hscfg)) {
513 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
514 return false;
515 }
516
517 if (wait_event_interruptible_timeout(adapter->hs_activate_wait_q,
518 adapter->hs_activate_wait_q_woken,
519 (10 * HZ)) <= 0) {
520 dev_err(adapter->dev, "hs_activate_wait_q terminated\n");
521 return false;
522 }
523
524 return true;
525 }
526 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
527
528 /*
529 * IOCTL request handler to get BSS information.
530 *
531 * This function collates the information from different driver structures
532 * to send to the user.
533 */
mwifiex_get_bss_info(struct mwifiex_private * priv,struct mwifiex_bss_info * info)534 int mwifiex_get_bss_info(struct mwifiex_private *priv,
535 struct mwifiex_bss_info *info)
536 {
537 struct mwifiex_adapter *adapter = priv->adapter;
538 struct mwifiex_bssdescriptor *bss_desc;
539
540 if (!info)
541 return -1;
542
543 bss_desc = &priv->curr_bss_params.bss_descriptor;
544
545 info->bss_mode = priv->bss_mode;
546
547 memcpy(&info->ssid, &bss_desc->ssid, sizeof(struct cfg80211_ssid));
548
549 memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
550
551 info->bss_chan = bss_desc->channel;
552
553 memcpy(info->country_code, adapter->country_code,
554 IEEE80211_COUNTRY_STRING_LEN);
555
556 info->media_connected = priv->media_connected;
557
558 info->max_power_level = priv->max_tx_power_level;
559 info->min_power_level = priv->min_tx_power_level;
560
561 info->adhoc_state = priv->adhoc_state;
562
563 info->bcn_nf_last = priv->bcn_nf_last;
564
565 if (priv->sec_info.wep_enabled)
566 info->wep_status = true;
567 else
568 info->wep_status = false;
569
570 info->is_hs_configured = adapter->is_hs_configured;
571 info->is_deep_sleep = adapter->is_deep_sleep;
572
573 return 0;
574 }
575
576 /*
577 * The function disables auto deep sleep mode.
578 */
mwifiex_disable_auto_ds(struct mwifiex_private * priv)579 int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
580 {
581 struct mwifiex_ds_auto_ds auto_ds;
582
583 auto_ds.auto_ds = DEEP_SLEEP_OFF;
584
585 return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
586 DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds, true);
587 }
588 EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
589
590 /*
591 * Sends IOCTL request to get the data rate.
592 *
593 * This function allocates the IOCTL request buffer, fills it
594 * with requisite parameters and calls the IOCTL handler.
595 */
mwifiex_drv_get_data_rate(struct mwifiex_private * priv,u32 * rate)596 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv, u32 *rate)
597 {
598 int ret;
599
600 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
601 HostCmd_ACT_GEN_GET, 0, NULL, true);
602
603 if (!ret) {
604 if (priv->is_data_rate_auto)
605 *rate = mwifiex_index_to_data_rate(priv, priv->tx_rate,
606 priv->tx_htinfo);
607 else
608 *rate = priv->data_rate;
609 }
610
611 return ret;
612 }
613
614 /*
615 * IOCTL request handler to set tx power configuration.
616 *
617 * This function prepares the correct firmware command and
618 * issues it.
619 *
620 * For non-auto power mode, all the following power groups are set -
621 * - Modulation class HR/DSSS
622 * - Modulation class OFDM
623 * - Modulation class HTBW20
624 * - Modulation class HTBW40
625 */
mwifiex_set_tx_power(struct mwifiex_private * priv,struct mwifiex_power_cfg * power_cfg)626 int mwifiex_set_tx_power(struct mwifiex_private *priv,
627 struct mwifiex_power_cfg *power_cfg)
628 {
629 int ret;
630 struct host_cmd_ds_txpwr_cfg *txp_cfg;
631 struct mwifiex_types_power_group *pg_tlv;
632 struct mwifiex_power_group *pg;
633 u8 *buf;
634 u16 dbm = 0;
635
636 if (!power_cfg->is_power_auto) {
637 dbm = (u16) power_cfg->power_level;
638 if ((dbm < priv->min_tx_power_level) ||
639 (dbm > priv->max_tx_power_level)) {
640 dev_err(priv->adapter->dev, "txpower value %d dBm"
641 " is out of range (%d dBm-%d dBm)\n",
642 dbm, priv->min_tx_power_level,
643 priv->max_tx_power_level);
644 return -1;
645 }
646 }
647 buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
648 if (!buf)
649 return -ENOMEM;
650
651 txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
652 txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
653 if (!power_cfg->is_power_auto) {
654 txp_cfg->mode = cpu_to_le32(1);
655 pg_tlv = (struct mwifiex_types_power_group *)
656 (buf + sizeof(struct host_cmd_ds_txpwr_cfg));
657 pg_tlv->type = cpu_to_le16(TLV_TYPE_POWER_GROUP);
658 pg_tlv->length =
659 cpu_to_le16(4 * sizeof(struct mwifiex_power_group));
660 pg = (struct mwifiex_power_group *)
661 (buf + sizeof(struct host_cmd_ds_txpwr_cfg)
662 + sizeof(struct mwifiex_types_power_group));
663 /* Power group for modulation class HR/DSSS */
664 pg->first_rate_code = 0x00;
665 pg->last_rate_code = 0x03;
666 pg->modulation_class = MOD_CLASS_HR_DSSS;
667 pg->power_step = 0;
668 pg->power_min = (s8) dbm;
669 pg->power_max = (s8) dbm;
670 pg++;
671 /* Power group for modulation class OFDM */
672 pg->first_rate_code = 0x00;
673 pg->last_rate_code = 0x07;
674 pg->modulation_class = MOD_CLASS_OFDM;
675 pg->power_step = 0;
676 pg->power_min = (s8) dbm;
677 pg->power_max = (s8) dbm;
678 pg++;
679 /* Power group for modulation class HTBW20 */
680 pg->first_rate_code = 0x00;
681 pg->last_rate_code = 0x20;
682 pg->modulation_class = MOD_CLASS_HT;
683 pg->power_step = 0;
684 pg->power_min = (s8) dbm;
685 pg->power_max = (s8) dbm;
686 pg->ht_bandwidth = HT_BW_20;
687 pg++;
688 /* Power group for modulation class HTBW40 */
689 pg->first_rate_code = 0x00;
690 pg->last_rate_code = 0x20;
691 pg->modulation_class = MOD_CLASS_HT;
692 pg->power_step = 0;
693 pg->power_min = (s8) dbm;
694 pg->power_max = (s8) dbm;
695 pg->ht_bandwidth = HT_BW_40;
696 }
697 ret = mwifiex_send_cmd(priv, HostCmd_CMD_TXPWR_CFG,
698 HostCmd_ACT_GEN_SET, 0, buf, true);
699
700 kfree(buf);
701 return ret;
702 }
703
704 /*
705 * IOCTL request handler to get power save mode.
706 *
707 * This function prepares the correct firmware command and
708 * issues it.
709 */
mwifiex_drv_set_power(struct mwifiex_private * priv,u32 * ps_mode)710 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
711 {
712 int ret;
713 struct mwifiex_adapter *adapter = priv->adapter;
714 u16 sub_cmd;
715
716 if (*ps_mode)
717 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
718 else
719 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
720 sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
721 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
722 sub_cmd, BITMAP_STA_PS, NULL, true);
723 if ((!ret) && (sub_cmd == DIS_AUTO_PS))
724 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
725 GET_PS, 0, NULL, false);
726
727 return ret;
728 }
729
730 /*
731 * IOCTL request handler to set/reset WPA IE.
732 *
733 * The supplied WPA IE is treated as a opaque buffer. Only the first field
734 * is checked to determine WPA version. If buffer length is zero, the existing
735 * WPA IE is reset.
736 */
mwifiex_set_wpa_ie_helper(struct mwifiex_private * priv,u8 * ie_data_ptr,u16 ie_len)737 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
738 u8 *ie_data_ptr, u16 ie_len)
739 {
740 if (ie_len) {
741 if (ie_len > sizeof(priv->wpa_ie)) {
742 dev_err(priv->adapter->dev,
743 "failed to copy WPA IE, too big\n");
744 return -1;
745 }
746 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
747 priv->wpa_ie_len = (u8) ie_len;
748 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
749 priv->wpa_ie_len, priv->wpa_ie[0]);
750
751 if (priv->wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC) {
752 priv->sec_info.wpa_enabled = true;
753 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
754 priv->sec_info.wpa2_enabled = true;
755 } else {
756 priv->sec_info.wpa_enabled = false;
757 priv->sec_info.wpa2_enabled = false;
758 }
759 } else {
760 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
761 priv->wpa_ie_len = 0;
762 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
763 priv->wpa_ie_len, priv->wpa_ie[0]);
764 priv->sec_info.wpa_enabled = false;
765 priv->sec_info.wpa2_enabled = false;
766 }
767
768 return 0;
769 }
770
771 /*
772 * IOCTL request handler to set/reset WAPI IE.
773 *
774 * The supplied WAPI IE is treated as a opaque buffer. Only the first field
775 * is checked to internally enable WAPI. If buffer length is zero, the existing
776 * WAPI IE is reset.
777 */
mwifiex_set_wapi_ie(struct mwifiex_private * priv,u8 * ie_data_ptr,u16 ie_len)778 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
779 u8 *ie_data_ptr, u16 ie_len)
780 {
781 if (ie_len) {
782 if (ie_len > sizeof(priv->wapi_ie)) {
783 dev_dbg(priv->adapter->dev,
784 "info: failed to copy WAPI IE, too big\n");
785 return -1;
786 }
787 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
788 priv->wapi_ie_len = ie_len;
789 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
790 priv->wapi_ie_len, priv->wapi_ie[0]);
791
792 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
793 priv->sec_info.wapi_enabled = true;
794 } else {
795 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
796 priv->wapi_ie_len = ie_len;
797 dev_dbg(priv->adapter->dev,
798 "info: Reset wapi_ie_len=%d IE=%#x\n",
799 priv->wapi_ie_len, priv->wapi_ie[0]);
800 priv->sec_info.wapi_enabled = false;
801 }
802 return 0;
803 }
804
805 /*
806 * IOCTL request handler to set/reset WPS IE.
807 *
808 * The supplied WPS IE is treated as a opaque buffer. Only the first field
809 * is checked to internally enable WPS. If buffer length is zero, the existing
810 * WPS IE is reset.
811 */
mwifiex_set_wps_ie(struct mwifiex_private * priv,u8 * ie_data_ptr,u16 ie_len)812 static int mwifiex_set_wps_ie(struct mwifiex_private *priv,
813 u8 *ie_data_ptr, u16 ie_len)
814 {
815 if (ie_len) {
816 if (ie_len > MWIFIEX_MAX_VSIE_LEN) {
817 dev_dbg(priv->adapter->dev,
818 "info: failed to copy WPS IE, too big\n");
819 return -1;
820 }
821
822 priv->wps_ie = kzalloc(MWIFIEX_MAX_VSIE_LEN, GFP_KERNEL);
823 if (!priv->wps_ie)
824 return -ENOMEM;
825
826 memcpy(priv->wps_ie, ie_data_ptr, ie_len);
827 priv->wps_ie_len = ie_len;
828 dev_dbg(priv->adapter->dev, "cmd: Set wps_ie_len=%d IE=%#x\n",
829 priv->wps_ie_len, priv->wps_ie[0]);
830 } else {
831 kfree(priv->wps_ie);
832 priv->wps_ie_len = ie_len;
833 dev_dbg(priv->adapter->dev,
834 "info: Reset wps_ie_len=%d\n", priv->wps_ie_len);
835 }
836 return 0;
837 }
838
839 /*
840 * IOCTL request handler to set WAPI key.
841 *
842 * This function prepares the correct firmware command and
843 * issues it.
844 */
mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private * priv,struct mwifiex_ds_encrypt_key * encrypt_key)845 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
846 struct mwifiex_ds_encrypt_key *encrypt_key)
847 {
848
849 return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
850 HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
851 encrypt_key, true);
852 }
853
854 /*
855 * IOCTL request handler to set WEP network key.
856 *
857 * This function prepares the correct firmware command and
858 * issues it, after validation checks.
859 */
mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private * priv,struct mwifiex_ds_encrypt_key * encrypt_key)860 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
861 struct mwifiex_ds_encrypt_key *encrypt_key)
862 {
863 struct mwifiex_adapter *adapter = priv->adapter;
864 int ret;
865 struct mwifiex_wep_key *wep_key;
866 int index;
867
868 if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
869 priv->wep_key_curr_index = 0;
870 wep_key = &priv->wep_key[priv->wep_key_curr_index];
871 index = encrypt_key->key_index;
872 if (encrypt_key->key_disable) {
873 priv->sec_info.wep_enabled = 0;
874 } else if (!encrypt_key->key_len) {
875 /* Copy the required key as the current key */
876 wep_key = &priv->wep_key[index];
877 if (!wep_key->key_length) {
878 dev_err(adapter->dev,
879 "key not set, so cannot enable it\n");
880 return -1;
881 }
882
883 if (adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2) {
884 memcpy(encrypt_key->key_material,
885 wep_key->key_material, wep_key->key_length);
886 encrypt_key->key_len = wep_key->key_length;
887 }
888
889 priv->wep_key_curr_index = (u16) index;
890 priv->sec_info.wep_enabled = 1;
891 } else {
892 wep_key = &priv->wep_key[index];
893 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
894 /* Copy the key in the driver */
895 memcpy(wep_key->key_material,
896 encrypt_key->key_material,
897 encrypt_key->key_len);
898 wep_key->key_index = index;
899 wep_key->key_length = encrypt_key->key_len;
900 priv->sec_info.wep_enabled = 1;
901 }
902 if (wep_key->key_length) {
903 void *enc_key;
904
905 if (encrypt_key->key_disable)
906 memset(&priv->wep_key[index], 0,
907 sizeof(struct mwifiex_wep_key));
908
909 if (adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2)
910 enc_key = encrypt_key;
911 else
912 enc_key = NULL;
913
914 /* Send request to firmware */
915 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
916 HostCmd_ACT_GEN_SET, 0, enc_key, false);
917 if (ret)
918 return ret;
919 }
920
921 if (priv->sec_info.wep_enabled)
922 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
923 else
924 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
925
926 ret = mwifiex_send_cmd(priv, HostCmd_CMD_MAC_CONTROL,
927 HostCmd_ACT_GEN_SET, 0,
928 &priv->curr_pkt_filter, true);
929
930 return ret;
931 }
932
933 /*
934 * IOCTL request handler to set WPA key.
935 *
936 * This function prepares the correct firmware command and
937 * issues it, after validation checks.
938 *
939 * Current driver only supports key length of up to 32 bytes.
940 *
941 * This function can also be used to disable a currently set key.
942 */
mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private * priv,struct mwifiex_ds_encrypt_key * encrypt_key)943 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
944 struct mwifiex_ds_encrypt_key *encrypt_key)
945 {
946 int ret;
947 u8 remove_key = false;
948 struct host_cmd_ds_802_11_key_material *ibss_key;
949
950 /* Current driver only supports key length of up to 32 bytes */
951 if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
952 dev_err(priv->adapter->dev, "key length too long\n");
953 return -1;
954 }
955
956 if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
957 /*
958 * IBSS/WPA-None uses only one key (Group) for both receiving
959 * and sending unicast and multicast packets.
960 */
961 /* Send the key as PTK to firmware */
962 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
963 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
964 HostCmd_ACT_GEN_SET,
965 KEY_INFO_ENABLED, encrypt_key, false);
966 if (ret)
967 return ret;
968
969 ibss_key = &priv->aes_key;
970 memset(ibss_key, 0,
971 sizeof(struct host_cmd_ds_802_11_key_material));
972 /* Copy the key in the driver */
973 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
974 encrypt_key->key_len);
975 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
976 sizeof(ibss_key->key_param_set.key_len));
977 ibss_key->key_param_set.key_type_id
978 = cpu_to_le16(KEY_TYPE_ID_TKIP);
979 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
980
981 /* Send the key as GTK to firmware */
982 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
983 }
984
985 if (!encrypt_key->key_index)
986 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
987
988 if (remove_key)
989 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
990 HostCmd_ACT_GEN_SET,
991 !KEY_INFO_ENABLED, encrypt_key, true);
992 else
993 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
994 HostCmd_ACT_GEN_SET,
995 KEY_INFO_ENABLED, encrypt_key, true);
996
997 return ret;
998 }
999
1000 /*
1001 * IOCTL request handler to set/get network keys.
1002 *
1003 * This is a generic key handling function which supports WEP, WPA
1004 * and WAPI.
1005 */
1006 static int
mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private * priv,struct mwifiex_ds_encrypt_key * encrypt_key)1007 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
1008 struct mwifiex_ds_encrypt_key *encrypt_key)
1009 {
1010 int status;
1011
1012 if (encrypt_key->is_wapi_key)
1013 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
1014 else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
1015 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
1016 else
1017 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
1018 return status;
1019 }
1020
1021 /*
1022 * This function returns the driver version.
1023 */
1024 int
mwifiex_drv_get_driver_version(struct mwifiex_adapter * adapter,char * version,int max_len)1025 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
1026 int max_len)
1027 {
1028 union {
1029 u32 l;
1030 u8 c[4];
1031 } ver;
1032 char fw_ver[32];
1033
1034 ver.l = adapter->fw_release_number;
1035 sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
1036
1037 snprintf(version, max_len, driver_version, fw_ver);
1038
1039 dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
1040
1041 return 0;
1042 }
1043
1044 /*
1045 * Sends IOCTL request to set encoding parameters.
1046 *
1047 * This function allocates the IOCTL request buffer, fills it
1048 * with requisite parameters and calls the IOCTL handler.
1049 */
mwifiex_set_encode(struct mwifiex_private * priv,struct key_params * kp,const u8 * key,int key_len,u8 key_index,const u8 * mac_addr,int disable)1050 int mwifiex_set_encode(struct mwifiex_private *priv, struct key_params *kp,
1051 const u8 *key, int key_len, u8 key_index,
1052 const u8 *mac_addr, int disable)
1053 {
1054 struct mwifiex_ds_encrypt_key encrypt_key;
1055
1056 memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1057 encrypt_key.key_len = key_len;
1058 encrypt_key.key_index = key_index;
1059
1060 if (kp && kp->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
1061 encrypt_key.is_igtk_key = true;
1062
1063 if (!disable) {
1064 if (key_len)
1065 memcpy(encrypt_key.key_material, key, key_len);
1066 else
1067 encrypt_key.is_current_wep_key = true;
1068
1069 if (mac_addr)
1070 memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1071 if (kp && kp->seq && kp->seq_len) {
1072 memcpy(encrypt_key.pn, kp->seq, kp->seq_len);
1073 encrypt_key.pn_len = kp->seq_len;
1074 encrypt_key.is_rx_seq_valid = true;
1075 }
1076 } else {
1077 encrypt_key.key_disable = true;
1078 if (mac_addr)
1079 memcpy(encrypt_key.mac_addr, mac_addr, ETH_ALEN);
1080 }
1081
1082 return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1083 }
1084
1085 /*
1086 * Sends IOCTL request to get extended version.
1087 *
1088 * This function allocates the IOCTL request buffer, fills it
1089 * with requisite parameters and calls the IOCTL handler.
1090 */
1091 int
mwifiex_get_ver_ext(struct mwifiex_private * priv)1092 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1093 {
1094 struct mwifiex_ver_ext ver_ext;
1095
1096 memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1097 if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,
1098 HostCmd_ACT_GEN_GET, 0, &ver_ext, true))
1099 return -1;
1100
1101 return 0;
1102 }
1103
1104 int
mwifiex_remain_on_chan_cfg(struct mwifiex_private * priv,u16 action,struct ieee80211_channel * chan,unsigned int duration)1105 mwifiex_remain_on_chan_cfg(struct mwifiex_private *priv, u16 action,
1106 struct ieee80211_channel *chan,
1107 unsigned int duration)
1108 {
1109 struct host_cmd_ds_remain_on_chan roc_cfg;
1110 u8 sc;
1111
1112 memset(&roc_cfg, 0, sizeof(roc_cfg));
1113 roc_cfg.action = cpu_to_le16(action);
1114 if (action == HostCmd_ACT_GEN_SET) {
1115 roc_cfg.band_cfg = chan->band;
1116 sc = mwifiex_chan_type_to_sec_chan_offset(NL80211_CHAN_NO_HT);
1117 roc_cfg.band_cfg |= (sc << 2);
1118
1119 roc_cfg.channel =
1120 ieee80211_frequency_to_channel(chan->center_freq);
1121 roc_cfg.duration = cpu_to_le32(duration);
1122 }
1123 if (mwifiex_send_cmd(priv, HostCmd_CMD_REMAIN_ON_CHAN,
1124 action, 0, &roc_cfg, true)) {
1125 dev_err(priv->adapter->dev, "failed to remain on channel\n");
1126 return -1;
1127 }
1128
1129 return roc_cfg.status;
1130 }
1131
1132 int
mwifiex_set_bss_role(struct mwifiex_private * priv,u8 bss_role)1133 mwifiex_set_bss_role(struct mwifiex_private *priv, u8 bss_role)
1134 {
1135 if (GET_BSS_ROLE(priv) == bss_role) {
1136 dev_dbg(priv->adapter->dev,
1137 "info: already in the desired role.\n");
1138 return 0;
1139 }
1140
1141 mwifiex_free_priv(priv);
1142 mwifiex_init_priv(priv);
1143
1144 priv->bss_role = bss_role;
1145 switch (bss_role) {
1146 case MWIFIEX_BSS_ROLE_UAP:
1147 priv->bss_mode = NL80211_IFTYPE_AP;
1148 break;
1149 case MWIFIEX_BSS_ROLE_STA:
1150 case MWIFIEX_BSS_ROLE_ANY:
1151 default:
1152 priv->bss_mode = NL80211_IFTYPE_STATION;
1153 break;
1154 }
1155
1156 mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
1157 HostCmd_ACT_GEN_SET, 0, NULL, true);
1158
1159 return mwifiex_sta_init_cmd(priv, false);
1160 }
1161
1162 /*
1163 * Sends IOCTL request to get statistics information.
1164 *
1165 * This function allocates the IOCTL request buffer, fills it
1166 * with requisite parameters and calls the IOCTL handler.
1167 */
1168 int
mwifiex_get_stats_info(struct mwifiex_private * priv,struct mwifiex_ds_get_stats * log)1169 mwifiex_get_stats_info(struct mwifiex_private *priv,
1170 struct mwifiex_ds_get_stats *log)
1171 {
1172 return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_GET_LOG,
1173 HostCmd_ACT_GEN_GET, 0, log, true);
1174 }
1175
1176 /*
1177 * IOCTL request handler to read/write register.
1178 *
1179 * This function prepares the correct firmware command and
1180 * issues it.
1181 *
1182 * Access to the following registers are supported -
1183 * - MAC
1184 * - BBP
1185 * - RF
1186 * - PMIC
1187 * - CAU
1188 */
mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private * priv,struct mwifiex_ds_reg_rw * reg_rw,u16 action)1189 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1190 struct mwifiex_ds_reg_rw *reg_rw,
1191 u16 action)
1192 {
1193 u16 cmd_no;
1194
1195 switch (le32_to_cpu(reg_rw->type)) {
1196 case MWIFIEX_REG_MAC:
1197 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1198 break;
1199 case MWIFIEX_REG_BBP:
1200 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1201 break;
1202 case MWIFIEX_REG_RF:
1203 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1204 break;
1205 case MWIFIEX_REG_PMIC:
1206 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1207 break;
1208 case MWIFIEX_REG_CAU:
1209 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1210 break;
1211 default:
1212 return -1;
1213 }
1214
1215 return mwifiex_send_cmd(priv, cmd_no, action, 0, reg_rw, true);
1216 }
1217
1218 /*
1219 * Sends IOCTL request to write to a register.
1220 *
1221 * This function allocates the IOCTL request buffer, fills it
1222 * with requisite parameters and calls the IOCTL handler.
1223 */
1224 int
mwifiex_reg_write(struct mwifiex_private * priv,u32 reg_type,u32 reg_offset,u32 reg_value)1225 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1226 u32 reg_offset, u32 reg_value)
1227 {
1228 struct mwifiex_ds_reg_rw reg_rw;
1229
1230 reg_rw.type = cpu_to_le32(reg_type);
1231 reg_rw.offset = cpu_to_le32(reg_offset);
1232 reg_rw.value = cpu_to_le32(reg_value);
1233
1234 return mwifiex_reg_mem_ioctl_reg_rw(priv, ®_rw, HostCmd_ACT_GEN_SET);
1235 }
1236
1237 /*
1238 * Sends IOCTL request to read from a register.
1239 *
1240 * This function allocates the IOCTL request buffer, fills it
1241 * with requisite parameters and calls the IOCTL handler.
1242 */
1243 int
mwifiex_reg_read(struct mwifiex_private * priv,u32 reg_type,u32 reg_offset,u32 * value)1244 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1245 u32 reg_offset, u32 *value)
1246 {
1247 int ret;
1248 struct mwifiex_ds_reg_rw reg_rw;
1249
1250 reg_rw.type = cpu_to_le32(reg_type);
1251 reg_rw.offset = cpu_to_le32(reg_offset);
1252 ret = mwifiex_reg_mem_ioctl_reg_rw(priv, ®_rw, HostCmd_ACT_GEN_GET);
1253
1254 if (ret)
1255 goto done;
1256
1257 *value = le32_to_cpu(reg_rw.value);
1258
1259 done:
1260 return ret;
1261 }
1262
1263 /*
1264 * Sends IOCTL request to read from EEPROM.
1265 *
1266 * This function allocates the IOCTL request buffer, fills it
1267 * with requisite parameters and calls the IOCTL handler.
1268 */
1269 int
mwifiex_eeprom_read(struct mwifiex_private * priv,u16 offset,u16 bytes,u8 * value)1270 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1271 u8 *value)
1272 {
1273 int ret;
1274 struct mwifiex_ds_read_eeprom rd_eeprom;
1275
1276 rd_eeprom.offset = cpu_to_le16((u16) offset);
1277 rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1278
1279 /* Send request to firmware */
1280 ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1281 HostCmd_ACT_GEN_GET, 0, &rd_eeprom, true);
1282
1283 if (!ret)
1284 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1285 return ret;
1286 }
1287
1288 /*
1289 * This function sets a generic IE. In addition to generic IE, it can
1290 * also handle WPA, WPA2 and WAPI IEs.
1291 */
1292 static int
mwifiex_set_gen_ie_helper(struct mwifiex_private * priv,u8 * ie_data_ptr,u16 ie_len)1293 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1294 u16 ie_len)
1295 {
1296 int ret = 0;
1297 struct ieee_types_vendor_header *pvendor_ie;
1298 const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1299 const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1300
1301 /* If the passed length is zero, reset the buffer */
1302 if (!ie_len) {
1303 priv->gen_ie_buf_len = 0;
1304 priv->wps.session_enable = false;
1305
1306 return 0;
1307 } else if (!ie_data_ptr) {
1308 return -1;
1309 }
1310 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1311 /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1312 if (((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1313 (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui)))) ||
1314 (pvendor_ie->element_id == WLAN_EID_RSN)) {
1315
1316 /* IE is a WPA/WPA2 IE so call set_wpa function */
1317 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1318 priv->wps.session_enable = false;
1319
1320 return ret;
1321 } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1322 /* IE is a WAPI IE so call set_wapi function */
1323 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1324
1325 return ret;
1326 }
1327 /*
1328 * Verify that the passed length is not larger than the
1329 * available space remaining in the buffer
1330 */
1331 if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1332
1333 /* Test to see if it is a WPS IE, if so, enable
1334 * wps session flag
1335 */
1336 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1337 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1338 (!memcmp(pvendor_ie->oui, wps_oui, sizeof(wps_oui)))) {
1339 priv->wps.session_enable = true;
1340 dev_dbg(priv->adapter->dev,
1341 "info: WPS Session Enabled.\n");
1342 ret = mwifiex_set_wps_ie(priv, ie_data_ptr, ie_len);
1343 }
1344
1345 /* Append the passed data to the end of the
1346 genIeBuffer */
1347 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1348 ie_len);
1349 /* Increment the stored buffer length by the
1350 size passed */
1351 priv->gen_ie_buf_len += ie_len;
1352 } else {
1353 /* Passed data does not fit in the remaining
1354 buffer space */
1355 ret = -1;
1356 }
1357
1358 /* Return 0, or -1 for error case */
1359 return ret;
1360 }
1361
1362 /*
1363 * IOCTL request handler to set/get generic IE.
1364 *
1365 * In addition to various generic IEs, this function can also be
1366 * used to set the ARP filter.
1367 */
mwifiex_misc_ioctl_gen_ie(struct mwifiex_private * priv,struct mwifiex_ds_misc_gen_ie * gen_ie,u16 action)1368 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1369 struct mwifiex_ds_misc_gen_ie *gen_ie,
1370 u16 action)
1371 {
1372 struct mwifiex_adapter *adapter = priv->adapter;
1373
1374 switch (gen_ie->type) {
1375 case MWIFIEX_IE_TYPE_GEN_IE:
1376 if (action == HostCmd_ACT_GEN_GET) {
1377 gen_ie->len = priv->wpa_ie_len;
1378 memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1379 } else {
1380 mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1381 (u16) gen_ie->len);
1382 }
1383 break;
1384 case MWIFIEX_IE_TYPE_ARP_FILTER:
1385 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1386 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1387 adapter->arp_filter_size = 0;
1388 dev_err(adapter->dev, "invalid ARP filter size\n");
1389 return -1;
1390 } else {
1391 memcpy(adapter->arp_filter, gen_ie->ie_data,
1392 gen_ie->len);
1393 adapter->arp_filter_size = gen_ie->len;
1394 }
1395 break;
1396 default:
1397 dev_err(adapter->dev, "invalid IE type\n");
1398 return -1;
1399 }
1400 return 0;
1401 }
1402
1403 /*
1404 * Sends IOCTL request to set a generic IE.
1405 *
1406 * This function allocates the IOCTL request buffer, fills it
1407 * with requisite parameters and calls the IOCTL handler.
1408 */
1409 int
mwifiex_set_gen_ie(struct mwifiex_private * priv,const u8 * ie,int ie_len)1410 mwifiex_set_gen_ie(struct mwifiex_private *priv, const u8 *ie, int ie_len)
1411 {
1412 struct mwifiex_ds_misc_gen_ie gen_ie;
1413
1414 if (ie_len > IEEE_MAX_IE_SIZE)
1415 return -EFAULT;
1416
1417 gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1418 gen_ie.len = ie_len;
1419 memcpy(gen_ie.ie_data, ie, ie_len);
1420 if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1421 return -EFAULT;
1422
1423 return 0;
1424 }
1425