2 * Marvell Wireless LAN device driver: scan ioctl and command handling
4 * Copyright (C) 2011-2014, Marvell International Ltd.
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.
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.
28 /* The maximum number of channels the firmware can scan per command */
29 #define MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN 14
31 #define MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD 4
33 /* Memory needed to store a max sized Channel List TLV for a firmware scan */
34 #define CHAN_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_header) \
35 + (MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN \
36 *sizeof(struct mwifiex_chan_scan_param_set)))
38 /* Memory needed to store supported rate */
39 #define RATE_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_rates_param_set) \
40 + HOSTCMD_SUPPORTED_RATES)
42 /* Memory needed to store a max number/size WildCard SSID TLV for a firmware
44 #define WILDCARD_SSID_TLV_MAX_SIZE \
45 (MWIFIEX_MAX_SSID_LIST_LENGTH * \
46 (sizeof(struct mwifiex_ie_types_wildcard_ssid_params) \
47 + IEEE80211_MAX_SSID_LEN))
49 /* Maximum memory needed for a mwifiex_scan_cmd_config with all TLVs at max */
50 #define MAX_SCAN_CFG_ALLOC (sizeof(struct mwifiex_scan_cmd_config) \
51 + sizeof(struct mwifiex_ie_types_num_probes) \
52 + sizeof(struct mwifiex_ie_types_htcap) \
55 + WILDCARD_SSID_TLV_MAX_SIZE)
58 union mwifiex_scan_cmd_config_tlv {
59 /* Scan configuration (variable length) */
60 struct mwifiex_scan_cmd_config config;
61 /* Max allocated block */
62 u8 config_alloc_buf[MAX_SCAN_CFG_ALLOC];
70 static u8 mwifiex_wpa_oui[CIPHER_SUITE_MAX][4] = {
71 { 0x00, 0x50, 0xf2, 0x02 }, /* TKIP */
72 { 0x00, 0x50, 0xf2, 0x04 }, /* AES */
74 static u8 mwifiex_rsn_oui[CIPHER_SUITE_MAX][4] = {
75 { 0x00, 0x0f, 0xac, 0x02 }, /* TKIP */
76 { 0x00, 0x0f, 0xac, 0x04 }, /* AES */
80 _dbg_security_flags(int log_level, const char *func, const char *desc,
81 struct mwifiex_private *priv,
82 struct mwifiex_bssdescriptor *bss_desc)
84 _mwifiex_dbg(priv->adapter, log_level,
85 "info: %s: %s:\twpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s\tEncMode=%#x privacy=%#x\n",
87 bss_desc->bcn_wpa_ie ?
88 bss_desc->bcn_wpa_ie->vend_hdr.element_id : 0,
89 bss_desc->bcn_rsn_ie ?
90 bss_desc->bcn_rsn_ie->ieee_hdr.element_id : 0,
91 priv->sec_info.wep_enabled ? "e" : "d",
92 priv->sec_info.wpa_enabled ? "e" : "d",
93 priv->sec_info.wpa2_enabled ? "e" : "d",
94 priv->sec_info.encryption_mode,
97 #define dbg_security_flags(mask, desc, priv, bss_desc) \
98 _dbg_security_flags(MWIFIEX_DBG_##mask, desc, __func__, priv, bss_desc)
101 has_ieee_hdr(struct ieee_types_generic *ie, u8 key)
103 return (ie && ie->ieee_hdr.element_id == key);
107 has_vendor_hdr(struct ieee_types_vendor_specific *ie, u8 key)
109 return (ie && ie->vend_hdr.element_id == key);
113 * This function parses a given IE for a given OUI.
115 * This is used to parse a WPA/RSN IE to find if it has
116 * a given oui in PTK.
119 mwifiex_search_oui_in_ie(struct ie_body *iebody, u8 *oui)
123 count = iebody->ptk_cnt[0];
125 /* There could be multiple OUIs for PTK hence
127 2) Check all the OUIs for AES.
128 3) If one of them is AES then pass success. */
130 if (!memcmp(iebody->ptk_body, oui, sizeof(iebody->ptk_body)))
131 return MWIFIEX_OUI_PRESENT;
135 iebody = (struct ie_body *) ((u8 *) iebody +
136 sizeof(iebody->ptk_body));
139 pr_debug("info: %s: OUI is not found in PTK\n", __func__);
140 return MWIFIEX_OUI_NOT_PRESENT;
144 * This function checks if a given OUI is present in a RSN IE.
146 * The function first checks if a RSN IE is present or not in the
147 * BSS descriptor. It tries to locate the OUI only if such an IE is
151 mwifiex_is_rsn_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher)
154 struct ie_body *iebody;
155 u8 ret = MWIFIEX_OUI_NOT_PRESENT;
157 if (has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN)) {
158 iebody = (struct ie_body *)
159 (((u8 *) bss_desc->bcn_rsn_ie->data) +
161 oui = &mwifiex_rsn_oui[cipher][0];
162 ret = mwifiex_search_oui_in_ie(iebody, oui);
170 * This function checks if a given OUI is present in a WPA IE.
172 * The function first checks if a WPA IE is present or not in the
173 * BSS descriptor. It tries to locate the OUI only if such an IE is
177 mwifiex_is_wpa_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher)
180 struct ie_body *iebody;
181 u8 ret = MWIFIEX_OUI_NOT_PRESENT;
183 if (has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC)) {
184 iebody = (struct ie_body *)((u8 *)bss_desc->bcn_wpa_ie->data +
186 oui = &mwifiex_wpa_oui[cipher][0];
187 ret = mwifiex_search_oui_in_ie(iebody, oui);
195 * This function compares two SSIDs and checks if they match.
198 mwifiex_ssid_cmp(struct cfg80211_ssid *ssid1, struct cfg80211_ssid *ssid2)
200 if (!ssid1 || !ssid2 || (ssid1->ssid_len != ssid2->ssid_len))
202 return memcmp(ssid1->ssid, ssid2->ssid, ssid1->ssid_len);
206 * This function checks if wapi is enabled in driver and scanned network is
207 * compatible with it.
210 mwifiex_is_bss_wapi(struct mwifiex_private *priv,
211 struct mwifiex_bssdescriptor *bss_desc)
213 if (priv->sec_info.wapi_enabled &&
214 has_ieee_hdr(bss_desc->bcn_wapi_ie, WLAN_EID_BSS_AC_ACCESS_DELAY))
220 * This function checks if driver is configured with no security mode and
221 * scanned network is compatible with it.
224 mwifiex_is_bss_no_sec(struct mwifiex_private *priv,
225 struct mwifiex_bssdescriptor *bss_desc)
227 if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
228 !priv->sec_info.wpa2_enabled &&
229 !has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC) &&
230 !has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN) &&
231 !priv->sec_info.encryption_mode && !bss_desc->privacy) {
238 * This function checks if static WEP is enabled in driver and scanned network
239 * is compatible with it.
242 mwifiex_is_bss_static_wep(struct mwifiex_private *priv,
243 struct mwifiex_bssdescriptor *bss_desc)
245 if (priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
246 !priv->sec_info.wpa2_enabled && bss_desc->privacy) {
253 * This function checks if wpa is enabled in driver and scanned network is
254 * compatible with it.
257 mwifiex_is_bss_wpa(struct mwifiex_private *priv,
258 struct mwifiex_bssdescriptor *bss_desc)
260 if (!priv->sec_info.wep_enabled && priv->sec_info.wpa_enabled &&
261 !priv->sec_info.wpa2_enabled &&
262 has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC)
264 * Privacy bit may NOT be set in some APs like
265 * LinkSys WRT54G && bss_desc->privacy
268 dbg_security_flags(INFO, "WPA", priv, bss_desc);
275 * This function checks if wpa2 is enabled in driver and scanned network is
276 * compatible with it.
279 mwifiex_is_bss_wpa2(struct mwifiex_private *priv,
280 struct mwifiex_bssdescriptor *bss_desc)
282 if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
283 priv->sec_info.wpa2_enabled &&
284 has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN)) {
286 * Privacy bit may NOT be set in some APs like
287 * LinkSys WRT54G && bss_desc->privacy
289 dbg_security_flags(INFO, "WAP2", priv, bss_desc);
296 * This function checks if adhoc AES is enabled in driver and scanned network is
297 * compatible with it.
300 mwifiex_is_bss_adhoc_aes(struct mwifiex_private *priv,
301 struct mwifiex_bssdescriptor *bss_desc)
303 if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
304 !priv->sec_info.wpa2_enabled &&
305 !has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC) &&
306 !has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN) &&
307 !priv->sec_info.encryption_mode && bss_desc->privacy) {
314 * This function checks if dynamic WEP is enabled in driver and scanned network
315 * is compatible with it.
318 mwifiex_is_bss_dynamic_wep(struct mwifiex_private *priv,
319 struct mwifiex_bssdescriptor *bss_desc)
321 if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled &&
322 !priv->sec_info.wpa2_enabled &&
323 !has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC) &&
324 !has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN) &&
325 priv->sec_info.encryption_mode && bss_desc->privacy) {
326 dbg_security_flags(INFO, "dynamic", priv, bss_desc);
333 * This function checks if a scanned network is compatible with the driver
336 * WEP WPA WPA2 ad-hoc encrypt Network
337 * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible
338 * 0 0 0 0 NONE 0 0 0 yes No security
339 * 0 1 0 0 x 1x 1 x yes WPA (disable
341 * 0 0 1 0 x 1x x 1 yes WPA2 (disable
343 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
344 * 1 0 0 0 NONE 1 0 0 yes Static WEP
346 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
348 * Compatibility is not matched while roaming, except for mode.
351 mwifiex_is_network_compatible(struct mwifiex_private *priv,
352 struct mwifiex_bssdescriptor *bss_desc, u32 mode)
354 struct mwifiex_adapter *adapter = priv->adapter;
356 bss_desc->disable_11n = false;
358 /* Don't check for compatibility if roaming */
359 if (priv->media_connected &&
360 (priv->bss_mode == NL80211_IFTYPE_STATION) &&
361 (bss_desc->bss_mode == NL80211_IFTYPE_STATION))
364 if (priv->wps.session_enable) {
365 mwifiex_dbg(adapter, IOCTL,
366 "info: return success directly in WPS period\n");
370 if (bss_desc->chan_sw_ie_present) {
371 mwifiex_dbg(adapter, INFO,
372 "Don't connect to AP with WLAN_EID_CHANNEL_SWITCH\n");
376 if (mwifiex_is_bss_wapi(priv, bss_desc)) {
377 mwifiex_dbg(adapter, INFO,
378 "info: return success for WAPI AP\n");
382 if (bss_desc->bss_mode == mode) {
383 if (mwifiex_is_bss_no_sec(priv, bss_desc)) {
386 } else if (mwifiex_is_bss_static_wep(priv, bss_desc)) {
387 /* Static WEP enabled */
388 mwifiex_dbg(adapter, INFO,
389 "info: Disable 11n in WEP mode.\n");
390 bss_desc->disable_11n = true;
392 } else if (mwifiex_is_bss_wpa(priv, bss_desc)) {
394 if (((priv->adapter->config_bands & BAND_GN ||
395 priv->adapter->config_bands & BAND_AN) &&
396 bss_desc->bcn_ht_cap) &&
397 !mwifiex_is_wpa_oui_present(bss_desc,
398 CIPHER_SUITE_CCMP)) {
400 if (mwifiex_is_wpa_oui_present
401 (bss_desc, CIPHER_SUITE_TKIP)) {
402 mwifiex_dbg(adapter, INFO,
403 "info: Disable 11n if AES\t"
404 "is not supported by AP\n");
405 bss_desc->disable_11n = true;
411 } else if (mwifiex_is_bss_wpa2(priv, bss_desc)) {
413 if (((priv->adapter->config_bands & BAND_GN ||
414 priv->adapter->config_bands & BAND_AN) &&
415 bss_desc->bcn_ht_cap) &&
416 !mwifiex_is_rsn_oui_present(bss_desc,
417 CIPHER_SUITE_CCMP)) {
419 if (mwifiex_is_rsn_oui_present
420 (bss_desc, CIPHER_SUITE_TKIP)) {
421 mwifiex_dbg(adapter, INFO,
422 "info: Disable 11n if AES\t"
423 "is not supported by AP\n");
424 bss_desc->disable_11n = true;
430 } else if (mwifiex_is_bss_adhoc_aes(priv, bss_desc)) {
431 /* Ad-hoc AES enabled */
433 } else if (mwifiex_is_bss_dynamic_wep(priv, bss_desc)) {
434 /* Dynamic WEP enabled */
438 /* Security doesn't match */
439 dbg_security_flags(ERROR, "failed", priv, bss_desc);
443 /* Mode doesn't match */
448 * This function creates a channel list for the driver to scan, based
449 * on region/band information.
451 * This routine is used for any scan that is not provided with a
452 * specific channel list to scan.
455 mwifiex_scan_create_channel_list(struct mwifiex_private *priv,
456 const struct mwifiex_user_scan_cfg
458 struct mwifiex_chan_scan_param_set
462 enum nl80211_band band;
463 struct ieee80211_supported_band *sband;
464 struct ieee80211_channel *ch;
465 struct mwifiex_adapter *adapter = priv->adapter;
468 for (band = 0; (band < NUM_NL80211_BANDS) ; band++) {
470 if (!priv->wdev.wiphy->bands[band])
473 sband = priv->wdev.wiphy->bands[band];
475 for (i = 0; (i < sband->n_channels) ; i++) {
476 ch = &sband->channels[i];
477 if (ch->flags & IEEE80211_CHAN_DISABLED)
479 scan_chan_list[chan_idx].radio_type = band;
482 user_scan_in->chan_list[0].scan_time)
483 scan_chan_list[chan_idx].max_scan_time =
484 cpu_to_le16((u16) user_scan_in->
485 chan_list[0].scan_time);
486 else if (ch->flags & IEEE80211_CHAN_NO_IR)
487 scan_chan_list[chan_idx].max_scan_time =
488 cpu_to_le16(adapter->passive_scan_time);
490 scan_chan_list[chan_idx].max_scan_time =
491 cpu_to_le16(adapter->active_scan_time);
493 if (ch->flags & IEEE80211_CHAN_NO_IR)
494 scan_chan_list[chan_idx].chan_scan_mode_bitmap
495 |= (MWIFIEX_PASSIVE_SCAN |
496 MWIFIEX_HIDDEN_SSID_REPORT);
498 scan_chan_list[chan_idx].chan_scan_mode_bitmap
499 &= ~MWIFIEX_PASSIVE_SCAN;
500 scan_chan_list[chan_idx].chan_number =
503 scan_chan_list[chan_idx].chan_scan_mode_bitmap
504 |= MWIFIEX_DISABLE_CHAN_FILT;
507 scan_chan_list[chan_idx].max_scan_time =
508 cpu_to_le16(adapter->specific_scan_time);
517 /* This function creates a channel list tlv for bgscan config, based
518 * on region/band information.
521 mwifiex_bgscan_create_channel_list(struct mwifiex_private *priv,
522 const struct mwifiex_bg_scan_cfg
524 struct mwifiex_chan_scan_param_set
527 enum nl80211_band band;
528 struct ieee80211_supported_band *sband;
529 struct ieee80211_channel *ch;
530 struct mwifiex_adapter *adapter = priv->adapter;
533 for (band = 0; (band < NUM_NL80211_BANDS); band++) {
534 if (!priv->wdev.wiphy->bands[band])
537 sband = priv->wdev.wiphy->bands[band];
539 for (i = 0; (i < sband->n_channels) ; i++) {
540 ch = &sband->channels[i];
541 if (ch->flags & IEEE80211_CHAN_DISABLED)
543 scan_chan_list[chan_idx].radio_type = band;
545 if (bgscan_cfg_in->chan_list[0].scan_time)
546 scan_chan_list[chan_idx].max_scan_time =
547 cpu_to_le16((u16)bgscan_cfg_in->
548 chan_list[0].scan_time);
549 else if (ch->flags & IEEE80211_CHAN_NO_IR)
550 scan_chan_list[chan_idx].max_scan_time =
551 cpu_to_le16(adapter->passive_scan_time);
553 scan_chan_list[chan_idx].max_scan_time =
554 cpu_to_le16(adapter->
557 if (ch->flags & IEEE80211_CHAN_NO_IR)
558 scan_chan_list[chan_idx].chan_scan_mode_bitmap
559 |= MWIFIEX_PASSIVE_SCAN;
561 scan_chan_list[chan_idx].chan_scan_mode_bitmap
562 &= ~MWIFIEX_PASSIVE_SCAN;
564 scan_chan_list[chan_idx].chan_number =
572 /* This function appends rate TLV to scan config command. */
574 mwifiex_append_rate_tlv(struct mwifiex_private *priv,
575 struct mwifiex_scan_cmd_config *scan_cfg_out,
578 struct mwifiex_ie_types_rates_param_set *rates_tlv;
579 u8 rates[MWIFIEX_SUPPORTED_RATES], *tlv_pos;
582 memset(rates, 0, sizeof(rates));
584 tlv_pos = (u8 *)scan_cfg_out->tlv_buf + scan_cfg_out->tlv_buf_len;
586 if (priv->scan_request)
587 rates_size = mwifiex_get_rates_from_cfg80211(priv, rates,
590 rates_size = mwifiex_get_supported_rates(priv, rates);
592 mwifiex_dbg(priv->adapter, CMD,
593 "info: SCAN_CMD: Rates size = %d\n",
595 rates_tlv = (struct mwifiex_ie_types_rates_param_set *)tlv_pos;
596 rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
597 rates_tlv->header.len = cpu_to_le16((u16) rates_size);
598 memcpy(rates_tlv->rates, rates, rates_size);
599 scan_cfg_out->tlv_buf_len += sizeof(rates_tlv->header) + rates_size;
605 * This function constructs and sends multiple scan config commands to
608 * Previous routines in the code flow have created a scan command configuration
609 * with any requested TLVs. This function splits the channel TLV into maximum
610 * channels supported per scan lists and sends the portion of the channel TLV,
611 * along with the other TLVs, to the firmware.
614 mwifiex_scan_channel_list(struct mwifiex_private *priv,
615 u32 max_chan_per_scan, u8 filtered_scan,
616 struct mwifiex_scan_cmd_config *scan_cfg_out,
617 struct mwifiex_ie_types_chan_list_param_set
619 struct mwifiex_chan_scan_param_set *scan_chan_list)
621 struct mwifiex_adapter *adapter = priv->adapter;
623 struct mwifiex_chan_scan_param_set *tmp_chan_list;
624 struct mwifiex_chan_scan_param_set *start_chan;
625 u32 tlv_idx, rates_size, cmd_no;
630 if (!scan_cfg_out || !chan_tlv_out || !scan_chan_list) {
631 mwifiex_dbg(priv->adapter, ERROR,
632 "info: Scan: Null detect: %p, %p, %p\n",
633 scan_cfg_out, chan_tlv_out, scan_chan_list);
637 /* Check csa channel expiry before preparing scan list */
638 mwifiex_11h_get_csa_closed_channel(priv);
640 chan_tlv_out->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
642 /* Set the temp channel struct pointer to the start of the desired
644 tmp_chan_list = scan_chan_list;
646 /* Loop through the desired channel list, sending a new firmware scan
647 commands for each max_chan_per_scan channels (or for 1,6,11
648 individually if configured accordingly) */
649 while (tmp_chan_list->chan_number) {
654 chan_tlv_out->header.len = 0;
655 start_chan = tmp_chan_list;
659 * Construct the Channel TLV for the scan command. Continue to
660 * insert channel TLVs until:
661 * - the tlv_idx hits the maximum configured per scan command
662 * - the next channel to insert is 0 (end of desired channel
664 * - done_early is set (controlling individual scanning of
667 while (tlv_idx < max_chan_per_scan &&
668 tmp_chan_list->chan_number && !done_early) {
670 if (tmp_chan_list->chan_number == priv->csa_chan) {
675 radio_type = tmp_chan_list->radio_type;
676 mwifiex_dbg(priv->adapter, INFO,
677 "info: Scan: Chan(%3d), Radio(%d),\t"
678 "Mode(%d, %d), Dur(%d)\n",
679 tmp_chan_list->chan_number,
680 tmp_chan_list->radio_type,
681 tmp_chan_list->chan_scan_mode_bitmap
682 & MWIFIEX_PASSIVE_SCAN,
683 (tmp_chan_list->chan_scan_mode_bitmap
684 & MWIFIEX_DISABLE_CHAN_FILT) >> 1,
685 le16_to_cpu(tmp_chan_list->max_scan_time));
687 /* Copy the current channel TLV to the command being
689 memcpy(chan_tlv_out->chan_scan_param + tlv_idx,
691 sizeof(chan_tlv_out->chan_scan_param));
693 /* Increment the TLV header length by the size
695 le16_unaligned_add_cpu(&chan_tlv_out->header.len,
697 chan_tlv_out->chan_scan_param));
700 * The tlv buffer length is set to the number of bytes
701 * of the between the channel tlv pointer and the start
702 * of the tlv buffer. This compensates for any TLVs
703 * that were appended before the channel list.
705 scan_cfg_out->tlv_buf_len = (u32) ((u8 *) chan_tlv_out -
706 scan_cfg_out->tlv_buf);
708 /* Add the size of the channel tlv header and the data
710 scan_cfg_out->tlv_buf_len +=
711 (sizeof(chan_tlv_out->header)
712 + le16_to_cpu(chan_tlv_out->header.len));
714 /* Increment the index to the channel tlv we are
718 /* Count the total scan time per command */
720 le16_to_cpu(tmp_chan_list->max_scan_time);
724 /* Stop the loop if the *current* channel is in the
725 1,6,11 set and we are not filtering on a BSSID
727 if (!filtered_scan &&
728 (tmp_chan_list->chan_number == 1 ||
729 tmp_chan_list->chan_number == 6 ||
730 tmp_chan_list->chan_number == 11))
733 /* Increment the tmp pointer to the next channel to
737 /* Stop the loop if the *next* channel is in the 1,6,11
738 set. This will cause it to be the only channel
739 scanned on the next interation */
740 if (!filtered_scan &&
741 (tmp_chan_list->chan_number == 1 ||
742 tmp_chan_list->chan_number == 6 ||
743 tmp_chan_list->chan_number == 11))
747 /* The total scan time should be less than scan command timeout
749 if (total_scan_time > MWIFIEX_MAX_TOTAL_SCAN_TIME) {
750 mwifiex_dbg(priv->adapter, ERROR,
751 "total scan time %dms\t"
752 "is over limit (%dms), scan skipped\n",
754 MWIFIEX_MAX_TOTAL_SCAN_TIME);
759 rates_size = mwifiex_append_rate_tlv(priv, scan_cfg_out,
762 priv->adapter->scan_channels = start_chan;
764 /* Send the scan command to the firmware with the specified
766 if (priv->adapter->ext_scan)
767 cmd_no = HostCmd_CMD_802_11_SCAN_EXT;
769 cmd_no = HostCmd_CMD_802_11_SCAN;
771 ret = mwifiex_send_cmd(priv, cmd_no, HostCmd_ACT_GEN_SET,
772 0, scan_cfg_out, false);
774 /* rate IE is updated per scan command but same starting
775 * pointer is used each time so that rate IE from earlier
776 * scan_cfg_out->buf is overwritten with new one.
778 scan_cfg_out->tlv_buf_len -=
779 sizeof(struct mwifiex_ie_types_header) + rates_size;
782 mwifiex_cancel_pending_scan_cmd(adapter);
794 * This function constructs a scan command configuration structure to use
797 * Application layer or other functions can invoke network scanning
798 * with a scan configuration supplied in a user scan configuration structure.
799 * This structure is used as the basis of one or many scan command configuration
800 * commands that are sent to the command processing module and eventually to the
803 * This function creates a scan command configuration structure based on the
804 * following user supplied parameters (if present):
807 * - Number of Probes to be sent
810 * If the SSID or BSSID filter is not present, the filter is disabled/cleared.
811 * If the number of probes is not set, adapter default setting is used.
814 mwifiex_config_scan(struct mwifiex_private *priv,
815 const struct mwifiex_user_scan_cfg *user_scan_in,
816 struct mwifiex_scan_cmd_config *scan_cfg_out,
817 struct mwifiex_ie_types_chan_list_param_set **chan_list_out,
818 struct mwifiex_chan_scan_param_set *scan_chan_list,
819 u8 *max_chan_per_scan, u8 *filtered_scan,
820 u8 *scan_current_only)
822 struct mwifiex_adapter *adapter = priv->adapter;
823 struct mwifiex_ie_types_num_probes *num_probes_tlv;
824 struct mwifiex_ie_types_scan_chan_gap *chan_gap_tlv;
825 struct mwifiex_ie_types_random_mac *random_mac_tlv;
826 struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv;
827 struct mwifiex_ie_types_bssid_list *bssid_tlv;
838 struct mwifiex_ie_types_htcap *ht_cap;
839 struct mwifiex_ie_types_bss_mode *bss_mode;
840 const u8 zero_mac[6] = {0, 0, 0, 0, 0, 0};
842 /* The tlv_buf_len is calculated for each scan command. The TLVs added
843 in this routine will be preserved since the routine that sends the
844 command will append channelTLVs at *chan_list_out. The difference
845 between the *chan_list_out and the tlv_buf start will be used to
846 calculate the size of anything we add in this routine. */
847 scan_cfg_out->tlv_buf_len = 0;
849 /* Running tlv pointer. Assigned to chan_list_out at end of function
850 so later routines know where channels can be added to the command
852 tlv_pos = scan_cfg_out->tlv_buf;
854 /* Initialize the scan as un-filtered; the flag is later set to TRUE
855 below if a SSID or BSSID filter is sent in the command */
856 *filtered_scan = false;
858 /* Initialize the scan as not being only on the current channel. If
859 the channel list is customized, only contains one channel, and is
860 the active channel, this is set true and data flow is not halted. */
861 *scan_current_only = false;
864 u8 tmpaddr[ETH_ALEN];
866 /* Default the ssid_filter flag to TRUE, set false under
867 certain wildcard conditions and qualified by the existence
868 of an SSID list before marking the scan as filtered */
871 /* Set the BSS type scan filter, use Adapter setting if
873 scan_cfg_out->bss_mode =
874 (u8)(user_scan_in->bss_mode ?: adapter->scan_mode);
876 /* Set the number of probes to send, use Adapter setting
878 num_probes = user_scan_in->num_probes ?: adapter->scan_probes;
881 * Set the BSSID filter to the incoming configuration,
882 * if non-zero. If not set, it will remain disabled
885 memcpy(scan_cfg_out->specific_bssid,
886 user_scan_in->specific_bssid,
887 sizeof(scan_cfg_out->specific_bssid));
889 memcpy(tmpaddr, scan_cfg_out->specific_bssid, ETH_ALEN);
891 if (adapter->ext_scan &&
892 !is_zero_ether_addr(tmpaddr)) {
894 (struct mwifiex_ie_types_bssid_list *)tlv_pos;
895 bssid_tlv->header.type = cpu_to_le16(TLV_TYPE_BSSID);
896 bssid_tlv->header.len = cpu_to_le16(ETH_ALEN);
897 memcpy(bssid_tlv->bssid, user_scan_in->specific_bssid,
899 tlv_pos += sizeof(struct mwifiex_ie_types_bssid_list);
902 for (i = 0; i < user_scan_in->num_ssids; i++) {
903 ssid_len = user_scan_in->ssid_list[i].ssid_len;
906 (struct mwifiex_ie_types_wildcard_ssid_params *)
908 wildcard_ssid_tlv->header.type =
909 cpu_to_le16(TLV_TYPE_WILDCARDSSID);
910 wildcard_ssid_tlv->header.len = cpu_to_le16(
911 (u16) (ssid_len + sizeof(wildcard_ssid_tlv->
915 * max_ssid_length = 0 tells firmware to perform
916 * specific scan for the SSID filled, whereas
917 * max_ssid_length = IEEE80211_MAX_SSID_LEN is for
921 wildcard_ssid_tlv->max_ssid_length = 0;
923 wildcard_ssid_tlv->max_ssid_length =
924 IEEE80211_MAX_SSID_LEN;
926 if (!memcmp(user_scan_in->ssid_list[i].ssid,
928 wildcard_ssid_tlv->max_ssid_length = 0xfe;
930 memcpy(wildcard_ssid_tlv->ssid,
931 user_scan_in->ssid_list[i].ssid, ssid_len);
933 tlv_pos += (sizeof(wildcard_ssid_tlv->header)
934 + le16_to_cpu(wildcard_ssid_tlv->header.len));
936 mwifiex_dbg(adapter, INFO,
937 "info: scan: ssid[%d]: %s, %d\n",
938 i, wildcard_ssid_tlv->ssid,
939 wildcard_ssid_tlv->max_ssid_length);
941 /* Empty wildcard ssid with a maxlen will match many or
942 potentially all SSIDs (maxlen == 32), therefore do
943 not treat the scan as
945 if (!ssid_len && wildcard_ssid_tlv->max_ssid_length)
950 * The default number of channels sent in the command is low to
951 * ensure the response buffer from the firmware does not
952 * truncate scan results. That is not an issue with an SSID
953 * or BSSID filter applied to the scan results in the firmware.
955 memcpy(tmpaddr, scan_cfg_out->specific_bssid, ETH_ALEN);
956 if ((i && ssid_filter) ||
957 !is_zero_ether_addr(tmpaddr))
958 *filtered_scan = true;
960 if (user_scan_in->scan_chan_gap) {
961 mwifiex_dbg(adapter, INFO,
962 "info: scan: channel gap = %d\n",
963 user_scan_in->scan_chan_gap);
965 MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN;
967 chan_gap_tlv = (void *)tlv_pos;
968 chan_gap_tlv->header.type =
969 cpu_to_le16(TLV_TYPE_SCAN_CHANNEL_GAP);
970 chan_gap_tlv->header.len =
971 cpu_to_le16(sizeof(chan_gap_tlv->chan_gap));
972 chan_gap_tlv->chan_gap =
973 cpu_to_le16((user_scan_in->scan_chan_gap));
975 sizeof(struct mwifiex_ie_types_scan_chan_gap);
978 if (!ether_addr_equal(user_scan_in->random_mac, zero_mac)) {
979 random_mac_tlv = (void *)tlv_pos;
980 random_mac_tlv->header.type =
981 cpu_to_le16(TLV_TYPE_RANDOM_MAC);
982 random_mac_tlv->header.len =
983 cpu_to_le16(sizeof(random_mac_tlv->mac));
984 ether_addr_copy(random_mac_tlv->mac,
985 user_scan_in->random_mac);
987 sizeof(struct mwifiex_ie_types_random_mac);
990 scan_cfg_out->bss_mode = (u8) adapter->scan_mode;
991 num_probes = adapter->scan_probes;
995 * If a specific BSSID or SSID is used, the number of channels in the
996 * scan command will be increased to the absolute maximum.
998 if (*filtered_scan) {
999 *max_chan_per_scan = MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN;
1001 if (!priv->media_connected)
1002 *max_chan_per_scan = MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD;
1004 *max_chan_per_scan =
1005 MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD / 2;
1008 if (adapter->ext_scan) {
1009 bss_mode = (struct mwifiex_ie_types_bss_mode *)tlv_pos;
1010 bss_mode->header.type = cpu_to_le16(TLV_TYPE_BSS_MODE);
1011 bss_mode->header.len = cpu_to_le16(sizeof(bss_mode->bss_mode));
1012 bss_mode->bss_mode = scan_cfg_out->bss_mode;
1013 tlv_pos += sizeof(bss_mode->header) +
1014 le16_to_cpu(bss_mode->header.len);
1017 /* If the input config or adapter has the number of Probes set,
1021 mwifiex_dbg(adapter, INFO,
1022 "info: scan: num_probes = %d\n",
1025 num_probes_tlv = (struct mwifiex_ie_types_num_probes *) tlv_pos;
1026 num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES);
1027 num_probes_tlv->header.len =
1028 cpu_to_le16(sizeof(num_probes_tlv->num_probes));
1029 num_probes_tlv->num_probes = cpu_to_le16((u16) num_probes);
1031 tlv_pos += sizeof(num_probes_tlv->header) +
1032 le16_to_cpu(num_probes_tlv->header.len);
1036 if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
1037 (priv->adapter->config_bands & BAND_GN ||
1038 priv->adapter->config_bands & BAND_AN)) {
1039 ht_cap = (struct mwifiex_ie_types_htcap *) tlv_pos;
1040 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
1041 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
1042 ht_cap->header.len =
1043 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
1045 mwifiex_band_to_radio_type(priv->adapter->config_bands);
1046 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
1047 tlv_pos += sizeof(struct mwifiex_ie_types_htcap);
1050 /* Append vendor specific IE TLV */
1051 mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_SCAN, &tlv_pos);
1054 * Set the output for the channel TLV to the address in the tlv buffer
1055 * past any TLVs that were added in this function (SSID, num_probes).
1056 * Channel TLVs will be added past this for each scan command,
1057 * preserving the TLVs that were previously added.
1060 (struct mwifiex_ie_types_chan_list_param_set *) tlv_pos;
1062 if (user_scan_in && user_scan_in->chan_list[0].chan_number) {
1064 mwifiex_dbg(adapter, INFO,
1065 "info: Scan: Using supplied channel list\n");
1068 chan_idx < MWIFIEX_USER_SCAN_CHAN_MAX &&
1069 user_scan_in->chan_list[chan_idx].chan_number;
1072 channel = user_scan_in->chan_list[chan_idx].chan_number;
1073 scan_chan_list[chan_idx].chan_number = channel;
1076 user_scan_in->chan_list[chan_idx].radio_type;
1077 scan_chan_list[chan_idx].radio_type = radio_type;
1079 scan_type = user_scan_in->chan_list[chan_idx].scan_type;
1081 if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE)
1082 scan_chan_list[chan_idx].chan_scan_mode_bitmap
1083 |= (MWIFIEX_PASSIVE_SCAN |
1084 MWIFIEX_HIDDEN_SSID_REPORT);
1086 scan_chan_list[chan_idx].chan_scan_mode_bitmap
1087 &= ~MWIFIEX_PASSIVE_SCAN;
1089 scan_chan_list[chan_idx].chan_scan_mode_bitmap
1090 |= MWIFIEX_DISABLE_CHAN_FILT;
1092 if (user_scan_in->chan_list[chan_idx].scan_time) {
1093 scan_dur = (u16) user_scan_in->
1094 chan_list[chan_idx].scan_time;
1096 if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE)
1097 scan_dur = adapter->passive_scan_time;
1098 else if (*filtered_scan)
1099 scan_dur = adapter->specific_scan_time;
1101 scan_dur = adapter->active_scan_time;
1104 scan_chan_list[chan_idx].min_scan_time =
1105 cpu_to_le16(scan_dur);
1106 scan_chan_list[chan_idx].max_scan_time =
1107 cpu_to_le16(scan_dur);
1110 /* Check if we are only scanning the current channel */
1111 if ((chan_idx == 1) &&
1112 (user_scan_in->chan_list[0].chan_number ==
1113 priv->curr_bss_params.bss_descriptor.channel)) {
1114 *scan_current_only = true;
1115 mwifiex_dbg(adapter, INFO,
1116 "info: Scan: Scanning current channel only\n");
1119 mwifiex_dbg(adapter, INFO,
1120 "info: Scan: Creating full region channel list\n");
1121 mwifiex_scan_create_channel_list(priv, user_scan_in,
1129 * This function inspects the scan response buffer for pointers to
1132 * TLVs can be included at the end of the scan response BSS information.
1134 * Data in the buffer is parsed pointers to TLVs that can potentially
1135 * be passed back in the response.
1138 mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter *adapter,
1139 struct mwifiex_ie_types_data *tlv,
1140 u32 tlv_buf_size, u32 req_tlv_type,
1141 struct mwifiex_ie_types_data **tlv_data)
1143 struct mwifiex_ie_types_data *current_tlv;
1149 tlv_buf_left = tlv_buf_size;
1152 mwifiex_dbg(adapter, INFO,
1153 "info: SCAN_RESP: tlv_buf_size = %d\n",
1156 while (tlv_buf_left >= sizeof(struct mwifiex_ie_types_header)) {
1158 tlv_type = le16_to_cpu(current_tlv->header.type);
1159 tlv_len = le16_to_cpu(current_tlv->header.len);
1161 if (sizeof(tlv->header) + tlv_len > tlv_buf_left) {
1162 mwifiex_dbg(adapter, ERROR,
1163 "SCAN_RESP: TLV buffer corrupt\n");
1167 if (req_tlv_type == tlv_type) {
1169 case TLV_TYPE_TSFTIMESTAMP:
1170 mwifiex_dbg(adapter, INFO,
1171 "info: SCAN_RESP: TSF\t"
1172 "timestamp TLV, len = %d\n",
1174 *tlv_data = current_tlv;
1176 case TLV_TYPE_CHANNELBANDLIST:
1177 mwifiex_dbg(adapter, INFO,
1178 "info: SCAN_RESP: channel\t"
1179 "band list TLV, len = %d\n",
1181 *tlv_data = current_tlv;
1184 mwifiex_dbg(adapter, ERROR,
1185 "SCAN_RESP: unhandled TLV = %d\n",
1187 /* Give up, this seems corrupted */
1196 tlv_buf_left -= (sizeof(tlv->header) + tlv_len);
1198 (struct mwifiex_ie_types_data *) (current_tlv->data +
1205 * This function parses provided beacon buffer and updates
1206 * respective fields in bss descriptor structure.
1208 int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
1209 struct mwifiex_bssdescriptor *bss_entry)
1213 struct ieee_types_fh_param_set *fh_param_set;
1214 struct ieee_types_ds_param_set *ds_param_set;
1215 struct ieee_types_cf_param_set *cf_param_set;
1216 struct ieee_types_ibss_param_set *ibss_param_set;
1223 u8 found_data_rate_ie;
1225 struct ieee_types_vendor_specific *vendor_ie;
1226 const u8 wpa_oui[4] = { 0x00, 0x50, 0xf2, 0x01 };
1227 const u8 wmm_oui[4] = { 0x00, 0x50, 0xf2, 0x02 };
1229 found_data_rate_ie = false;
1231 current_ptr = bss_entry->beacon_buf;
1232 bytes_left = bss_entry->beacon_buf_size;
1234 /* Process variable IE */
1235 while (bytes_left >= 2) {
1236 element_id = *current_ptr;
1237 element_len = *(current_ptr + 1);
1238 total_ie_len = element_len + sizeof(struct ieee_types_header);
1240 if (bytes_left < total_ie_len) {
1241 mwifiex_dbg(adapter, ERROR,
1242 "err: InterpretIE: in processing\t"
1243 "IE, bytes left < IE length\n");
1246 switch (element_id) {
1248 if (element_len > IEEE80211_MAX_SSID_LEN)
1250 bss_entry->ssid.ssid_len = element_len;
1251 memcpy(bss_entry->ssid.ssid, (current_ptr + 2),
1253 mwifiex_dbg(adapter, INFO,
1254 "info: InterpretIE: ssid: %-32s\n",
1255 bss_entry->ssid.ssid);
1258 case WLAN_EID_SUPP_RATES:
1259 if (element_len > MWIFIEX_SUPPORTED_RATES)
1261 memcpy(bss_entry->data_rates, current_ptr + 2,
1263 memcpy(bss_entry->supported_rates, current_ptr + 2,
1265 rate_size = element_len;
1266 found_data_rate_ie = true;
1269 case WLAN_EID_FH_PARAMS:
1270 if (element_len + 2 < sizeof(*fh_param_set))
1273 (struct ieee_types_fh_param_set *) current_ptr;
1274 memcpy(&bss_entry->phy_param_set.fh_param_set,
1276 sizeof(struct ieee_types_fh_param_set));
1279 case WLAN_EID_DS_PARAMS:
1280 if (element_len + 2 < sizeof(*ds_param_set))
1283 (struct ieee_types_ds_param_set *) current_ptr;
1285 bss_entry->channel = ds_param_set->current_chan;
1287 memcpy(&bss_entry->phy_param_set.ds_param_set,
1289 sizeof(struct ieee_types_ds_param_set));
1292 case WLAN_EID_CF_PARAMS:
1293 if (element_len + 2 < sizeof(*cf_param_set))
1296 (struct ieee_types_cf_param_set *) current_ptr;
1297 memcpy(&bss_entry->ss_param_set.cf_param_set,
1299 sizeof(struct ieee_types_cf_param_set));
1302 case WLAN_EID_IBSS_PARAMS:
1303 if (element_len + 2 < sizeof(*ibss_param_set))
1306 (struct ieee_types_ibss_param_set *)
1308 memcpy(&bss_entry->ss_param_set.ibss_param_set,
1310 sizeof(struct ieee_types_ibss_param_set));
1313 case WLAN_EID_ERP_INFO:
1316 bss_entry->erp_flags = *(current_ptr + 2);
1319 case WLAN_EID_PWR_CONSTRAINT:
1322 bss_entry->local_constraint = *(current_ptr + 2);
1323 bss_entry->sensed_11h = true;
1326 case WLAN_EID_CHANNEL_SWITCH:
1327 bss_entry->chan_sw_ie_present = true;
1328 case WLAN_EID_PWR_CAPABILITY:
1329 case WLAN_EID_TPC_REPORT:
1330 case WLAN_EID_QUIET:
1331 bss_entry->sensed_11h = true;
1334 case WLAN_EID_EXT_SUPP_RATES:
1336 * Only process extended supported rate
1337 * if data rate is already found.
1338 * Data rate IE should come before
1339 * extended supported rate IE
1341 if (found_data_rate_ie) {
1342 if ((element_len + rate_size) >
1343 MWIFIEX_SUPPORTED_RATES)
1345 (MWIFIEX_SUPPORTED_RATES -
1348 bytes_to_copy = element_len;
1350 rate = (u8 *) bss_entry->data_rates;
1352 memcpy(rate, current_ptr + 2, bytes_to_copy);
1354 rate = (u8 *) bss_entry->supported_rates;
1356 memcpy(rate, current_ptr + 2, bytes_to_copy);
1360 case WLAN_EID_VENDOR_SPECIFIC:
1361 vendor_ie = (struct ieee_types_vendor_specific *)
1364 /* 802.11 requires at least 3-byte OUI. */
1365 if (element_len < sizeof(vendor_ie->vend_hdr.oui.oui))
1368 /* Not long enough for a match? Skip it. */
1369 if (element_len < sizeof(wpa_oui))
1372 if (!memcmp(&vendor_ie->vend_hdr.oui, wpa_oui,
1374 bss_entry->bcn_wpa_ie =
1375 (struct ieee_types_vendor_specific *)
1377 bss_entry->wpa_offset = (u16)
1378 (current_ptr - bss_entry->beacon_buf);
1379 } else if (!memcmp(&vendor_ie->vend_hdr.oui, wmm_oui,
1382 sizeof(struct ieee_types_wmm_parameter) ||
1384 sizeof(struct ieee_types_wmm_info))
1386 * Only accept and copy the WMM IE if
1387 * it matches the size expected for the
1388 * WMM Info IE or the WMM Parameter IE.
1390 memcpy((u8 *) &bss_entry->wmm_ie,
1391 current_ptr, total_ie_len);
1395 bss_entry->bcn_rsn_ie =
1396 (struct ieee_types_generic *) current_ptr;
1397 bss_entry->rsn_offset = (u16) (current_ptr -
1398 bss_entry->beacon_buf);
1400 case WLAN_EID_BSS_AC_ACCESS_DELAY:
1401 bss_entry->bcn_wapi_ie =
1402 (struct ieee_types_generic *) current_ptr;
1403 bss_entry->wapi_offset = (u16) (current_ptr -
1404 bss_entry->beacon_buf);
1406 case WLAN_EID_HT_CAPABILITY:
1407 bss_entry->bcn_ht_cap = (struct ieee80211_ht_cap *)
1409 sizeof(struct ieee_types_header));
1410 bss_entry->ht_cap_offset = (u16) (current_ptr +
1411 sizeof(struct ieee_types_header) -
1412 bss_entry->beacon_buf);
1414 case WLAN_EID_HT_OPERATION:
1415 bss_entry->bcn_ht_oper =
1416 (struct ieee80211_ht_operation *)(current_ptr +
1417 sizeof(struct ieee_types_header));
1418 bss_entry->ht_info_offset = (u16) (current_ptr +
1419 sizeof(struct ieee_types_header) -
1420 bss_entry->beacon_buf);
1422 case WLAN_EID_VHT_CAPABILITY:
1423 bss_entry->disable_11ac = false;
1424 bss_entry->bcn_vht_cap =
1425 (void *)(current_ptr +
1426 sizeof(struct ieee_types_header));
1427 bss_entry->vht_cap_offset =
1428 (u16)((u8 *)bss_entry->bcn_vht_cap -
1429 bss_entry->beacon_buf);
1431 case WLAN_EID_VHT_OPERATION:
1432 bss_entry->bcn_vht_oper =
1433 (void *)(current_ptr +
1434 sizeof(struct ieee_types_header));
1435 bss_entry->vht_info_offset =
1436 (u16)((u8 *)bss_entry->bcn_vht_oper -
1437 bss_entry->beacon_buf);
1439 case WLAN_EID_BSS_COEX_2040:
1440 bss_entry->bcn_bss_co_2040 = current_ptr;
1441 bss_entry->bss_co_2040_offset =
1442 (u16) (current_ptr - bss_entry->beacon_buf);
1444 case WLAN_EID_EXT_CAPABILITY:
1445 bss_entry->bcn_ext_cap = current_ptr;
1446 bss_entry->ext_cap_offset =
1447 (u16) (current_ptr - bss_entry->beacon_buf);
1449 case WLAN_EID_OPMODE_NOTIF:
1450 bss_entry->oper_mode = (void *)current_ptr;
1451 bss_entry->oper_mode_offset =
1452 (u16)((u8 *)bss_entry->oper_mode -
1453 bss_entry->beacon_buf);
1459 current_ptr += element_len + 2;
1461 /* Need to account for IE ID and IE Len */
1462 bytes_left -= (element_len + 2);
1464 } /* while (bytes_left > 2) */
1469 * This function converts radio type scan parameter to a band configuration
1470 * to be used in join command.
1473 mwifiex_radio_type_to_band(u8 radio_type)
1475 switch (radio_type) {
1476 case HostCmd_SCAN_RADIO_TYPE_A:
1478 case HostCmd_SCAN_RADIO_TYPE_BG:
1485 * This is an internal function used to start a scan based on an input
1488 * This uses the input user scan configuration information when provided in
1489 * order to send the appropriate scan commands to firmware to populate or
1490 * update the internal driver scan table.
1492 int mwifiex_scan_networks(struct mwifiex_private *priv,
1493 const struct mwifiex_user_scan_cfg *user_scan_in)
1496 struct mwifiex_adapter *adapter = priv->adapter;
1497 struct cmd_ctrl_node *cmd_node;
1498 union mwifiex_scan_cmd_config_tlv *scan_cfg_out;
1499 struct mwifiex_ie_types_chan_list_param_set *chan_list_out;
1500 struct mwifiex_chan_scan_param_set *scan_chan_list;
1502 u8 scan_current_chan_only;
1503 u8 max_chan_per_scan;
1504 unsigned long flags;
1506 if (adapter->scan_processing) {
1507 mwifiex_dbg(adapter, WARN,
1508 "cmd: Scan already in process...\n");
1512 if (priv->scan_block) {
1513 mwifiex_dbg(adapter, WARN,
1514 "cmd: Scan is blocked during association...\n");
1518 if (adapter->surprise_removed || adapter->is_cmd_timedout) {
1519 mwifiex_dbg(adapter, ERROR,
1520 "Ignore scan. Card removed or firmware in bad state\n");
1524 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
1525 adapter->scan_processing = true;
1526 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
1528 scan_cfg_out = kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv),
1530 if (!scan_cfg_out) {
1535 scan_chan_list = kcalloc(MWIFIEX_USER_SCAN_CHAN_MAX,
1536 sizeof(struct mwifiex_chan_scan_param_set),
1538 if (!scan_chan_list) {
1539 kfree(scan_cfg_out);
1544 mwifiex_config_scan(priv, user_scan_in, &scan_cfg_out->config,
1545 &chan_list_out, scan_chan_list, &max_chan_per_scan,
1546 &filtered_scan, &scan_current_chan_only);
1548 ret = mwifiex_scan_channel_list(priv, max_chan_per_scan, filtered_scan,
1549 &scan_cfg_out->config, chan_list_out,
1552 /* Get scan command from scan_pending_q and put to cmd_pending_q */
1554 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
1555 if (!list_empty(&adapter->scan_pending_q)) {
1556 cmd_node = list_first_entry(&adapter->scan_pending_q,
1557 struct cmd_ctrl_node, list);
1558 list_del(&cmd_node->list);
1559 spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
1561 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node);
1562 queue_work(adapter->workqueue, &adapter->main_work);
1564 /* Perform internal scan synchronously */
1565 if (!priv->scan_request) {
1566 mwifiex_dbg(adapter, INFO,
1567 "wait internal scan\n");
1568 mwifiex_wait_queue_complete(adapter, cmd_node);
1571 spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
1576 kfree(scan_cfg_out);
1577 kfree(scan_chan_list);
1580 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
1581 adapter->scan_processing = false;
1582 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
1588 * This function prepares a scan command to be sent to the firmware.
1590 * This uses the scan command configuration sent to the command processing
1591 * module in command preparation stage to configure a scan command structure
1592 * to send to firmware.
1594 * The fixed fields specifying the BSS type and BSSID filters as well as a
1595 * variable number/length of TLVs are sent in the command to firmware.
1597 * Preparation also includes -
1598 * - Setting command ID, and proper size
1599 * - Ensuring correct endian-ness
1601 int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command *cmd,
1602 struct mwifiex_scan_cmd_config *scan_cfg)
1604 struct host_cmd_ds_802_11_scan *scan_cmd = &cmd->params.scan;
1606 /* Set fixed field variables in scan command */
1607 scan_cmd->bss_mode = scan_cfg->bss_mode;
1608 memcpy(scan_cmd->bssid, scan_cfg->specific_bssid,
1609 sizeof(scan_cmd->bssid));
1610 memcpy(scan_cmd->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len);
1612 cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN);
1614 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
1615 cmd->size = cpu_to_le16((u16) (sizeof(scan_cmd->bss_mode)
1616 + sizeof(scan_cmd->bssid)
1617 + scan_cfg->tlv_buf_len + S_DS_GEN));
1623 * This function checks compatibility of requested network with current
1626 int mwifiex_check_network_compatibility(struct mwifiex_private *priv,
1627 struct mwifiex_bssdescriptor *bss_desc)
1634 if ((mwifiex_get_cfp(priv, (u8) bss_desc->bss_band,
1635 (u16) bss_desc->channel, 0))) {
1636 switch (priv->bss_mode) {
1637 case NL80211_IFTYPE_STATION:
1638 case NL80211_IFTYPE_ADHOC:
1639 ret = mwifiex_is_network_compatible(priv, bss_desc,
1642 mwifiex_dbg(priv->adapter, ERROR,
1643 "Incompatible network settings\n");
1653 /* This function checks if SSID string contains all zeroes or length is zero */
1654 static bool mwifiex_is_hidden_ssid(struct cfg80211_ssid *ssid)
1658 for (idx = 0; idx < ssid->ssid_len; idx++) {
1659 if (ssid->ssid[idx])
1666 /* This function checks if any hidden SSID found in passive scan channels
1667 * and save those channels for specific SSID active scan
1669 static int mwifiex_save_hidden_ssid_channels(struct mwifiex_private *priv,
1670 struct cfg80211_bss *bss)
1672 struct mwifiex_bssdescriptor *bss_desc;
1676 /* Allocate and fill new bss descriptor */
1677 bss_desc = kzalloc(sizeof(*bss_desc), GFP_KERNEL);
1681 ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
1685 if (mwifiex_is_hidden_ssid(&bss_desc->ssid)) {
1686 mwifiex_dbg(priv->adapter, INFO, "found hidden SSID\n");
1687 for (chid = 0 ; chid < MWIFIEX_USER_SCAN_CHAN_MAX; chid++) {
1688 if (priv->hidden_chan[chid].chan_number ==
1689 bss->channel->hw_value)
1692 if (!priv->hidden_chan[chid].chan_number) {
1693 priv->hidden_chan[chid].chan_number =
1694 bss->channel->hw_value;
1695 priv->hidden_chan[chid].radio_type =
1697 priv->hidden_chan[chid].scan_type =
1698 MWIFIEX_SCAN_TYPE_ACTIVE;
1705 /* beacon_ie buffer was allocated in function
1706 * mwifiex_fill_new_bss_desc(). Free it now.
1708 kfree(bss_desc->beacon_buf);
1713 static int mwifiex_update_curr_bss_params(struct mwifiex_private *priv,
1714 struct cfg80211_bss *bss)
1716 struct mwifiex_bssdescriptor *bss_desc;
1718 unsigned long flags;
1720 /* Allocate and fill new bss descriptor */
1721 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor), GFP_KERNEL);
1725 ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
1729 ret = mwifiex_check_network_compatibility(priv, bss_desc);
1733 spin_lock_irqsave(&priv->curr_bcn_buf_lock, flags);
1734 /* Make a copy of current BSSID descriptor */
1735 memcpy(&priv->curr_bss_params.bss_descriptor, bss_desc,
1736 sizeof(priv->curr_bss_params.bss_descriptor));
1738 /* The contents of beacon_ie will be copied to its own buffer
1739 * in mwifiex_save_curr_bcn()
1741 mwifiex_save_curr_bcn(priv);
1742 spin_unlock_irqrestore(&priv->curr_bcn_buf_lock, flags);
1745 /* beacon_ie buffer was allocated in function
1746 * mwifiex_fill_new_bss_desc(). Free it now.
1748 kfree(bss_desc->beacon_buf);
1754 mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info,
1755 u32 *bytes_left, u64 fw_tsf, u8 *radio_type,
1756 bool ext_scan, s32 rssi_val)
1758 struct mwifiex_adapter *adapter = priv->adapter;
1759 struct mwifiex_chan_freq_power *cfp;
1760 struct cfg80211_bss *bss;
1766 u16 beacon_size = 0;
1770 u16 cap_info_bitmap;
1773 struct mwifiex_fixed_bcn_param *bcn_param;
1774 struct mwifiex_bss_priv *bss_priv;
1776 if (*bytes_left >= sizeof(beacon_size)) {
1777 /* Extract & convert beacon size from command buffer */
1778 beacon_size = get_unaligned_le16((*bss_info));
1779 *bytes_left -= sizeof(beacon_size);
1780 *bss_info += sizeof(beacon_size);
1783 if (!beacon_size || beacon_size > *bytes_left) {
1784 *bss_info += *bytes_left;
1789 /* Initialize the current working beacon pointer for this BSS
1792 current_ptr = *bss_info;
1794 /* Advance the return beacon pointer past the current beacon */
1795 *bss_info += beacon_size;
1796 *bytes_left -= beacon_size;
1798 curr_bcn_bytes = beacon_size;
1800 /* First 5 fields are bssid, RSSI(for legacy scan only),
1801 * time stamp, beacon interval, and capability information
1803 if (curr_bcn_bytes < ETH_ALEN + sizeof(u8) +
1804 sizeof(struct mwifiex_fixed_bcn_param)) {
1805 mwifiex_dbg(adapter, ERROR,
1806 "InterpretIE: not enough bytes left\n");
1810 memcpy(bssid, current_ptr, ETH_ALEN);
1811 current_ptr += ETH_ALEN;
1812 curr_bcn_bytes -= ETH_ALEN;
1815 rssi = (s32) *current_ptr;
1816 rssi = (-rssi) * 100; /* Convert dBm to mBm */
1817 current_ptr += sizeof(u8);
1818 curr_bcn_bytes -= sizeof(u8);
1819 mwifiex_dbg(adapter, INFO,
1820 "info: InterpretIE: RSSI=%d\n", rssi);
1825 bcn_param = (struct mwifiex_fixed_bcn_param *)current_ptr;
1826 current_ptr += sizeof(*bcn_param);
1827 curr_bcn_bytes -= sizeof(*bcn_param);
1829 timestamp = le64_to_cpu(bcn_param->timestamp);
1830 beacon_period = le16_to_cpu(bcn_param->beacon_period);
1832 cap_info_bitmap = le16_to_cpu(bcn_param->cap_info_bitmap);
1833 mwifiex_dbg(adapter, INFO,
1834 "info: InterpretIE: capabilities=0x%X\n",
1837 /* Rest of the current buffer are IE's */
1838 ie_buf = current_ptr;
1839 ie_len = curr_bcn_bytes;
1840 mwifiex_dbg(adapter, INFO,
1841 "info: InterpretIE: IELength for this AP = %d\n",
1844 while (curr_bcn_bytes >= sizeof(struct ieee_types_header)) {
1845 u8 element_id, element_len;
1847 element_id = *current_ptr;
1848 element_len = *(current_ptr + 1);
1849 if (curr_bcn_bytes < element_len +
1850 sizeof(struct ieee_types_header)) {
1851 mwifiex_dbg(adapter, ERROR,
1852 "%s: bytes left < IE length\n", __func__);
1855 if (element_id == WLAN_EID_DS_PARAMS) {
1856 channel = *(current_ptr +
1857 sizeof(struct ieee_types_header));
1861 current_ptr += element_len + sizeof(struct ieee_types_header);
1862 curr_bcn_bytes -= element_len +
1863 sizeof(struct ieee_types_header);
1867 struct ieee80211_channel *chan;
1870 /* Skip entry if on csa closed channel */
1871 if (channel == priv->csa_chan) {
1872 mwifiex_dbg(adapter, WARN,
1873 "Dropping entry on csa closed channel\n");
1879 band = mwifiex_radio_type_to_band(*radio_type &
1882 cfp = mwifiex_get_cfp(priv, band, channel, 0);
1884 freq = cfp ? cfp->freq : 0;
1886 chan = ieee80211_get_channel(priv->wdev.wiphy, freq);
1888 if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {
1889 bss = cfg80211_inform_bss(priv->wdev.wiphy,
1890 chan, CFG80211_BSS_FTYPE_UNKNOWN,
1892 cap_info_bitmap, beacon_period,
1893 ie_buf, ie_len, rssi, GFP_ATOMIC);
1895 bss_priv = (struct mwifiex_bss_priv *)bss->priv;
1896 bss_priv->band = band;
1897 bss_priv->fw_tsf = fw_tsf;
1898 if (priv->media_connected &&
1899 !memcmp(bssid, priv->curr_bss_params.
1900 bss_descriptor.mac_address,
1902 mwifiex_update_curr_bss_params(priv,
1905 if ((chan->flags & IEEE80211_CHAN_RADAR) ||
1906 (chan->flags & IEEE80211_CHAN_NO_IR)) {
1907 mwifiex_dbg(adapter, INFO,
1908 "radar or passive channel %d\n",
1910 mwifiex_save_hidden_ssid_channels(priv,
1914 cfg80211_put_bss(priv->wdev.wiphy, bss);
1918 mwifiex_dbg(adapter, WARN, "missing BSS channel IE\n");
1924 static void mwifiex_complete_scan(struct mwifiex_private *priv)
1926 struct mwifiex_adapter *adapter = priv->adapter;
1928 adapter->survey_idx = 0;
1929 if (adapter->curr_cmd->wait_q_enabled) {
1930 adapter->cmd_wait_q.status = 0;
1931 if (!priv->scan_request) {
1932 mwifiex_dbg(adapter, INFO,
1933 "complete internal scan\n");
1934 mwifiex_complete_cmd(adapter, adapter->curr_cmd);
1939 /* This function checks if any hidden SSID found in passive scan channels
1940 * and do specific SSID active scan for those channels
1943 mwifiex_active_scan_req_for_passive_chan(struct mwifiex_private *priv)
1946 struct mwifiex_adapter *adapter = priv->adapter;
1948 struct mwifiex_user_scan_cfg *user_scan_cfg;
1950 if (adapter->active_scan_triggered || !priv->scan_request ||
1951 priv->scan_aborting) {
1952 adapter->active_scan_triggered = false;
1956 if (!priv->hidden_chan[0].chan_number) {
1957 mwifiex_dbg(adapter, INFO, "No BSS with hidden SSID found on DFS channels\n");
1960 user_scan_cfg = kzalloc(sizeof(*user_scan_cfg), GFP_KERNEL);
1965 memset(user_scan_cfg, 0, sizeof(*user_scan_cfg));
1967 for (id = 0; id < MWIFIEX_USER_SCAN_CHAN_MAX; id++) {
1968 if (!priv->hidden_chan[id].chan_number)
1970 memcpy(&user_scan_cfg->chan_list[id],
1971 &priv->hidden_chan[id],
1972 sizeof(struct mwifiex_user_scan_chan));
1975 adapter->active_scan_triggered = true;
1976 if (priv->scan_request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
1977 ether_addr_copy(user_scan_cfg->random_mac, priv->random_mac);
1978 user_scan_cfg->num_ssids = priv->scan_request->n_ssids;
1979 user_scan_cfg->ssid_list = priv->scan_request->ssids;
1981 ret = mwifiex_scan_networks(priv, user_scan_cfg);
1982 kfree(user_scan_cfg);
1984 memset(&priv->hidden_chan, 0, sizeof(priv->hidden_chan));
1987 dev_err(priv->adapter->dev, "scan failed: %d\n", ret);
1993 static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
1995 struct mwifiex_adapter *adapter = priv->adapter;
1996 struct cmd_ctrl_node *cmd_node;
1997 unsigned long flags;
1999 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
2000 if (list_empty(&adapter->scan_pending_q)) {
2001 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
2003 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
2004 adapter->scan_processing = false;
2005 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
2007 mwifiex_active_scan_req_for_passive_chan(priv);
2009 if (!adapter->ext_scan)
2010 mwifiex_complete_scan(priv);
2012 if (priv->scan_request) {
2013 struct cfg80211_scan_info info = {
2017 mwifiex_dbg(adapter, INFO,
2018 "info: notifying scan done\n");
2019 cfg80211_scan_done(priv->scan_request, &info);
2020 priv->scan_request = NULL;
2021 priv->scan_aborting = false;
2023 priv->scan_aborting = false;
2024 mwifiex_dbg(adapter, INFO,
2025 "info: scan already aborted\n");
2027 } else if ((priv->scan_aborting && !priv->scan_request) ||
2029 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
2031 mwifiex_cancel_pending_scan_cmd(adapter);
2033 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
2034 adapter->scan_processing = false;
2035 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
2037 if (!adapter->active_scan_triggered) {
2038 if (priv->scan_request) {
2039 struct cfg80211_scan_info info = {
2043 mwifiex_dbg(adapter, INFO,
2044 "info: aborting scan\n");
2045 cfg80211_scan_done(priv->scan_request, &info);
2046 priv->scan_request = NULL;
2047 priv->scan_aborting = false;
2049 priv->scan_aborting = false;
2050 mwifiex_dbg(adapter, INFO,
2051 "info: scan already aborted\n");
2055 /* Get scan command from scan_pending_q and put to
2058 cmd_node = list_first_entry(&adapter->scan_pending_q,
2059 struct cmd_ctrl_node, list);
2060 list_del(&cmd_node->list);
2061 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
2062 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node);
2068 void mwifiex_cancel_scan(struct mwifiex_adapter *adapter)
2070 struct mwifiex_private *priv;
2071 unsigned long cmd_flags;
2074 mwifiex_cancel_pending_scan_cmd(adapter);
2076 if (adapter->scan_processing) {
2077 spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags);
2078 adapter->scan_processing = false;
2079 spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags);
2080 for (i = 0; i < adapter->priv_num; i++) {
2081 priv = adapter->priv[i];
2084 if (priv->scan_request) {
2085 struct cfg80211_scan_info info = {
2089 mwifiex_dbg(adapter, INFO,
2090 "info: aborting scan\n");
2091 cfg80211_scan_done(priv->scan_request, &info);
2092 priv->scan_request = NULL;
2093 priv->scan_aborting = false;
2100 * This function handles the command response of scan.
2102 * The response buffer for the scan command has the following
2105 * .-------------------------------------------------------------.
2106 * | Header (4 * sizeof(t_u16)): Standard command response hdr |
2107 * .-------------------------------------------------------------.
2108 * | BufSize (t_u16) : sizeof the BSS Description data |
2109 * .-------------------------------------------------------------.
2110 * | NumOfSet (t_u8) : Number of BSS Descs returned |
2111 * .-------------------------------------------------------------.
2112 * | BSSDescription data (variable, size given in BufSize) |
2113 * .-------------------------------------------------------------.
2114 * | TLV data (variable, size calculated using Header->Size, |
2115 * | BufSize and sizeof the fixed fields above) |
2116 * .-------------------------------------------------------------.
2118 int mwifiex_ret_802_11_scan(struct mwifiex_private *priv,
2119 struct host_cmd_ds_command *resp)
2122 struct mwifiex_adapter *adapter = priv->adapter;
2123 struct host_cmd_ds_802_11_scan_rsp *scan_rsp;
2124 struct mwifiex_ie_types_data *tlv_data;
2125 struct mwifiex_ie_types_tsf_timestamp *tsf_tlv;
2131 struct mwifiex_ie_types_chan_band_list_param_set *chan_band_tlv;
2132 struct chan_band_param_set *chan_band;
2136 struct cfg80211_wowlan_nd_match *pmatch;
2137 struct cfg80211_sched_scan_request *nd_config = NULL;
2139 is_bgscan_resp = (le16_to_cpu(resp->command)
2140 == HostCmd_CMD_802_11_BG_SCAN_QUERY);
2142 scan_rsp = &resp->params.bg_scan_query_resp.scan_resp;
2144 scan_rsp = &resp->params.scan_resp;
2147 if (scan_rsp->number_of_sets > MWIFIEX_MAX_AP) {
2148 mwifiex_dbg(adapter, ERROR,
2149 "SCAN_RESP: too many AP returned (%d)\n",
2150 scan_rsp->number_of_sets);
2152 goto check_next_scan;
2155 /* Check csa channel expiry before parsing scan response */
2156 mwifiex_11h_get_csa_closed_channel(priv);
2158 bytes_left = le16_to_cpu(scan_rsp->bss_descript_size);
2159 mwifiex_dbg(adapter, INFO,
2160 "info: SCAN_RESP: bss_descript_size %d\n",
2163 scan_resp_size = le16_to_cpu(resp->size);
2165 mwifiex_dbg(adapter, INFO,
2166 "info: SCAN_RESP: returned %d APs before parsing\n",
2167 scan_rsp->number_of_sets);
2169 bss_info = scan_rsp->bss_desc_and_tlv_buffer;
2172 * The size of the TLV buffer is equal to the entire command response
2173 * size (scan_resp_size) minus the fixed fields (sizeof()'s), the
2174 * BSS Descriptions (bss_descript_size as bytesLef) and the command
2175 * response header (S_DS_GEN)
2177 tlv_buf_size = scan_resp_size - (bytes_left
2178 + sizeof(scan_rsp->bss_descript_size)
2179 + sizeof(scan_rsp->number_of_sets)
2182 tlv_data = (struct mwifiex_ie_types_data *) (scan_rsp->
2183 bss_desc_and_tlv_buffer +
2186 /* Search the TLV buffer space in the scan response for any valid
2188 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size,
2189 TLV_TYPE_TSFTIMESTAMP,
2190 (struct mwifiex_ie_types_data **)
2193 /* Search the TLV buffer space in the scan response for any valid
2195 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size,
2196 TLV_TYPE_CHANNELBANDLIST,
2197 (struct mwifiex_ie_types_data **)
2201 if (priv->wdev.wiphy->wowlan_config)
2202 nd_config = priv->wdev.wiphy->wowlan_config->nd_config;
2207 kzalloc(sizeof(struct cfg80211_wowlan_nd_match) +
2208 sizeof(struct cfg80211_wowlan_nd_match *) *
2209 scan_rsp->number_of_sets, GFP_ATOMIC);
2211 if (adapter->nd_info)
2212 adapter->nd_info->n_matches = scan_rsp->number_of_sets;
2215 for (idx = 0; idx < scan_rsp->number_of_sets && bytes_left; idx++) {
2217 * If the TSF TLV was appended to the scan results, save this
2218 * entry's TSF value in the fw_tsf field. It is the firmware's
2219 * TSF value at the time the beacon or probe response was
2223 memcpy(&fw_tsf, &tsf_tlv->tsf_data[idx * TSF_DATA_SIZE],
2226 if (chan_band_tlv) {
2227 chan_band = &chan_band_tlv->chan_band_param[idx];
2228 radio_type = &chan_band->radio_type;
2233 if (chan_band_tlv && adapter->nd_info) {
2234 adapter->nd_info->matches[idx] =
2235 kzalloc(sizeof(*pmatch) + sizeof(u32),
2238 pmatch = adapter->nd_info->matches[idx];
2241 pmatch->n_channels = 1;
2242 pmatch->channels[0] = chan_band->chan_number;
2246 ret = mwifiex_parse_single_response_buf(priv, &bss_info,
2248 le64_to_cpu(fw_tsf),
2249 radio_type, false, 0);
2251 goto check_next_scan;
2255 mwifiex_check_next_scan_command(priv);
2260 * This function prepares an extended scan command to be sent to the firmware
2262 * This uses the scan command configuration sent to the command processing
2263 * module in command preparation stage to configure a extended scan command
2264 * structure to send to firmware.
2266 int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private *priv,
2267 struct host_cmd_ds_command *cmd,
2270 struct host_cmd_ds_802_11_scan_ext *ext_scan = &cmd->params.ext_scan;
2271 struct mwifiex_scan_cmd_config *scan_cfg = data_buf;
2273 memcpy(ext_scan->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len);
2275 cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN_EXT);
2277 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
2278 cmd->size = cpu_to_le16((u16)(sizeof(ext_scan->reserved)
2279 + scan_cfg->tlv_buf_len + S_DS_GEN));
2284 /* This function prepares an background scan config command to be sent
2287 int mwifiex_cmd_802_11_bg_scan_config(struct mwifiex_private *priv,
2288 struct host_cmd_ds_command *cmd,
2291 struct host_cmd_ds_802_11_bg_scan_config *bgscan_config =
2292 &cmd->params.bg_scan_config;
2293 struct mwifiex_bg_scan_cfg *bgscan_cfg_in = data_buf;
2294 u8 *tlv_pos = bgscan_config->tlv;
2296 u32 ssid_len, chan_idx, scan_type, scan_dur, chan_num;
2298 struct mwifiex_ie_types_num_probes *num_probes_tlv;
2299 struct mwifiex_ie_types_repeat_count *repeat_count_tlv;
2300 struct mwifiex_ie_types_min_rssi_threshold *rssi_threshold_tlv;
2301 struct mwifiex_ie_types_bgscan_start_later *start_later_tlv;
2302 struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv;
2303 struct mwifiex_ie_types_chan_list_param_set *chan_list_tlv;
2304 struct mwifiex_chan_scan_param_set *temp_chan;
2306 cmd->command = cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_CONFIG);
2307 cmd->size = cpu_to_le16(sizeof(*bgscan_config) + S_DS_GEN);
2309 bgscan_config->action = cpu_to_le16(bgscan_cfg_in->action);
2310 bgscan_config->enable = bgscan_cfg_in->enable;
2311 bgscan_config->bss_type = bgscan_cfg_in->bss_type;
2312 bgscan_config->scan_interval =
2313 cpu_to_le32(bgscan_cfg_in->scan_interval);
2314 bgscan_config->report_condition =
2315 cpu_to_le32(bgscan_cfg_in->report_condition);
2317 /* stop sched scan */
2318 if (!bgscan_config->enable)
2321 bgscan_config->chan_per_scan = bgscan_cfg_in->chan_per_scan;
2323 num_probes = (bgscan_cfg_in->num_probes ? bgscan_cfg_in->
2324 num_probes : priv->adapter->scan_probes);
2327 num_probes_tlv = (struct mwifiex_ie_types_num_probes *)tlv_pos;
2328 num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES);
2329 num_probes_tlv->header.len =
2330 cpu_to_le16(sizeof(num_probes_tlv->num_probes));
2331 num_probes_tlv->num_probes = cpu_to_le16((u16)num_probes);
2333 tlv_pos += sizeof(num_probes_tlv->header) +
2334 le16_to_cpu(num_probes_tlv->header.len);
2337 if (bgscan_cfg_in->repeat_count) {
2339 (struct mwifiex_ie_types_repeat_count *)tlv_pos;
2340 repeat_count_tlv->header.type =
2341 cpu_to_le16(TLV_TYPE_REPEAT_COUNT);
2342 repeat_count_tlv->header.len =
2343 cpu_to_le16(sizeof(repeat_count_tlv->repeat_count));
2344 repeat_count_tlv->repeat_count =
2345 cpu_to_le16(bgscan_cfg_in->repeat_count);
2347 tlv_pos += sizeof(repeat_count_tlv->header) +
2348 le16_to_cpu(repeat_count_tlv->header.len);
2351 if (bgscan_cfg_in->rssi_threshold) {
2352 rssi_threshold_tlv =
2353 (struct mwifiex_ie_types_min_rssi_threshold *)tlv_pos;
2354 rssi_threshold_tlv->header.type =
2355 cpu_to_le16(TLV_TYPE_RSSI_LOW);
2356 rssi_threshold_tlv->header.len =
2357 cpu_to_le16(sizeof(rssi_threshold_tlv->rssi_threshold));
2358 rssi_threshold_tlv->rssi_threshold =
2359 cpu_to_le16(bgscan_cfg_in->rssi_threshold);
2361 tlv_pos += sizeof(rssi_threshold_tlv->header) +
2362 le16_to_cpu(rssi_threshold_tlv->header.len);
2365 for (i = 0; i < bgscan_cfg_in->num_ssids; i++) {
2366 ssid_len = bgscan_cfg_in->ssid_list[i].ssid.ssid_len;
2369 (struct mwifiex_ie_types_wildcard_ssid_params *)tlv_pos;
2370 wildcard_ssid_tlv->header.type =
2371 cpu_to_le16(TLV_TYPE_WILDCARDSSID);
2372 wildcard_ssid_tlv->header.len = cpu_to_le16(
2373 (u16)(ssid_len + sizeof(wildcard_ssid_tlv->
2376 /* max_ssid_length = 0 tells firmware to perform
2377 * specific scan for the SSID filled, whereas
2378 * max_ssid_length = IEEE80211_MAX_SSID_LEN is for
2382 wildcard_ssid_tlv->max_ssid_length = 0;
2384 wildcard_ssid_tlv->max_ssid_length =
2385 IEEE80211_MAX_SSID_LEN;
2387 memcpy(wildcard_ssid_tlv->ssid,
2388 bgscan_cfg_in->ssid_list[i].ssid.ssid, ssid_len);
2390 tlv_pos += (sizeof(wildcard_ssid_tlv->header)
2391 + le16_to_cpu(wildcard_ssid_tlv->header.len));
2394 chan_list_tlv = (struct mwifiex_ie_types_chan_list_param_set *)tlv_pos;
2396 if (bgscan_cfg_in->chan_list[0].chan_number) {
2397 dev_dbg(priv->adapter->dev, "info: bgscan: Using supplied channel list\n");
2399 chan_list_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
2402 chan_idx < MWIFIEX_BG_SCAN_CHAN_MAX &&
2403 bgscan_cfg_in->chan_list[chan_idx].chan_number;
2405 temp_chan = chan_list_tlv->chan_scan_param + chan_idx;
2407 /* Increment the TLV header length by size appended */
2408 le16_unaligned_add_cpu(&chan_list_tlv->header.len,
2410 chan_list_tlv->chan_scan_param));
2412 temp_chan->chan_number =
2413 bgscan_cfg_in->chan_list[chan_idx].chan_number;
2414 temp_chan->radio_type =
2415 bgscan_cfg_in->chan_list[chan_idx].radio_type;
2418 bgscan_cfg_in->chan_list[chan_idx].scan_type;
2420 if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE)
2421 temp_chan->chan_scan_mode_bitmap
2422 |= MWIFIEX_PASSIVE_SCAN;
2424 temp_chan->chan_scan_mode_bitmap
2425 &= ~MWIFIEX_PASSIVE_SCAN;
2427 if (bgscan_cfg_in->chan_list[chan_idx].scan_time) {
2428 scan_dur = (u16)bgscan_cfg_in->
2429 chan_list[chan_idx].scan_time;
2431 scan_dur = (scan_type ==
2432 MWIFIEX_SCAN_TYPE_PASSIVE) ?
2433 priv->adapter->passive_scan_time :
2434 priv->adapter->specific_scan_time;
2437 temp_chan->min_scan_time = cpu_to_le16(scan_dur);
2438 temp_chan->max_scan_time = cpu_to_le16(scan_dur);
2441 dev_dbg(priv->adapter->dev,
2442 "info: bgscan: Creating full region channel list\n");
2444 mwifiex_bgscan_create_channel_list(priv, bgscan_cfg_in,
2447 le16_unaligned_add_cpu(&chan_list_tlv->header.len,
2449 sizeof(chan_list_tlv->chan_scan_param[0]));
2452 tlv_pos += (sizeof(chan_list_tlv->header)
2453 + le16_to_cpu(chan_list_tlv->header.len));
2455 if (bgscan_cfg_in->start_later) {
2457 (struct mwifiex_ie_types_bgscan_start_later *)tlv_pos;
2458 start_later_tlv->header.type =
2459 cpu_to_le16(TLV_TYPE_BGSCAN_START_LATER);
2460 start_later_tlv->header.len =
2461 cpu_to_le16(sizeof(start_later_tlv->start_later));
2462 start_later_tlv->start_later =
2463 cpu_to_le16(bgscan_cfg_in->start_later);
2465 tlv_pos += sizeof(start_later_tlv->header) +
2466 le16_to_cpu(start_later_tlv->header.len);
2469 /* Append vendor specific IE TLV */
2470 mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_BGSCAN, &tlv_pos);
2472 le16_unaligned_add_cpu(&cmd->size, tlv_pos - bgscan_config->tlv);
2477 int mwifiex_stop_bg_scan(struct mwifiex_private *priv)
2479 struct mwifiex_bg_scan_cfg *bgscan_cfg;
2481 if (!priv->sched_scanning) {
2482 dev_dbg(priv->adapter->dev, "bgscan already stopped!\n");
2486 bgscan_cfg = kzalloc(sizeof(*bgscan_cfg), GFP_KERNEL);
2490 bgscan_cfg->bss_type = MWIFIEX_BSS_MODE_INFRA;
2491 bgscan_cfg->action = MWIFIEX_BGSCAN_ACT_SET;
2492 bgscan_cfg->enable = false;
2494 if (mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_CONFIG,
2495 HostCmd_ACT_GEN_SET, 0, bgscan_cfg, true)) {
2501 priv->sched_scanning = false;
2507 mwifiex_update_chan_statistics(struct mwifiex_private *priv,
2508 struct mwifiex_ietypes_chanstats *tlv_stat)
2510 struct mwifiex_adapter *adapter = priv->adapter;
2512 struct mwifiex_fw_chan_stats *fw_chan_stats;
2513 struct mwifiex_chan_stats chan_stats;
2515 fw_chan_stats = (void *)((u8 *)tlv_stat +
2516 sizeof(struct mwifiex_ie_types_header));
2517 num_chan = le16_to_cpu(tlv_stat->header.len) /
2518 sizeof(struct mwifiex_chan_stats);
2520 for (i = 0 ; i < num_chan; i++) {
2521 if (adapter->survey_idx >= adapter->num_in_chan_stats) {
2522 mwifiex_dbg(adapter, WARN,
2523 "FW reported too many channel results (max %d)\n",
2524 adapter->num_in_chan_stats);
2527 chan_stats.chan_num = fw_chan_stats->chan_num;
2528 chan_stats.bandcfg = fw_chan_stats->bandcfg;
2529 chan_stats.flags = fw_chan_stats->flags;
2530 chan_stats.noise = fw_chan_stats->noise;
2531 chan_stats.total_bss = le16_to_cpu(fw_chan_stats->total_bss);
2532 chan_stats.cca_scan_dur =
2533 le16_to_cpu(fw_chan_stats->cca_scan_dur);
2534 chan_stats.cca_busy_dur =
2535 le16_to_cpu(fw_chan_stats->cca_busy_dur);
2536 mwifiex_dbg(adapter, INFO,
2537 "chan=%d, noise=%d, total_network=%d scan_duration=%d, busy_duration=%d\n",
2538 chan_stats.chan_num,
2540 chan_stats.total_bss,
2541 chan_stats.cca_scan_dur,
2542 chan_stats.cca_busy_dur);
2543 memcpy(&adapter->chan_stats[adapter->survey_idx++], &chan_stats,
2544 sizeof(struct mwifiex_chan_stats));
2549 /* This function handles the command response of extended scan */
2550 int mwifiex_ret_802_11_scan_ext(struct mwifiex_private *priv,
2551 struct host_cmd_ds_command *resp)
2553 struct mwifiex_adapter *adapter = priv->adapter;
2554 struct host_cmd_ds_802_11_scan_ext *ext_scan_resp;
2555 struct mwifiex_ie_types_header *tlv;
2556 struct mwifiex_ietypes_chanstats *tlv_stat;
2557 u16 buf_left, type, len;
2559 struct host_cmd_ds_command *cmd_ptr;
2560 struct cmd_ctrl_node *cmd_node;
2561 unsigned long cmd_flags, scan_flags;
2562 bool complete_scan = false;
2564 mwifiex_dbg(adapter, INFO, "info: EXT scan returns successfully\n");
2566 ext_scan_resp = &resp->params.ext_scan;
2568 tlv = (void *)ext_scan_resp->tlv_buffer;
2569 buf_left = le16_to_cpu(resp->size) - (sizeof(*ext_scan_resp) + S_DS_GEN
2572 while (buf_left >= sizeof(struct mwifiex_ie_types_header)) {
2573 type = le16_to_cpu(tlv->type);
2574 len = le16_to_cpu(tlv->len);
2576 if (buf_left < (sizeof(struct mwifiex_ie_types_header) + len)) {
2577 mwifiex_dbg(adapter, ERROR,
2578 "error processing scan response TLVs");
2583 case TLV_TYPE_CHANNEL_STATS:
2584 tlv_stat = (void *)tlv;
2585 mwifiex_update_chan_statistics(priv, tlv_stat);
2591 buf_left -= len + sizeof(struct mwifiex_ie_types_header);
2592 tlv = (void *)((u8 *)tlv + len +
2593 sizeof(struct mwifiex_ie_types_header));
2596 spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_flags);
2597 spin_lock_irqsave(&adapter->scan_pending_q_lock, scan_flags);
2598 if (list_empty(&adapter->scan_pending_q)) {
2599 complete_scan = true;
2600 list_for_each_entry(cmd_node, &adapter->cmd_pending_q, list) {
2601 cmd_ptr = (void *)cmd_node->cmd_skb->data;
2602 if (le16_to_cpu(cmd_ptr->command) ==
2603 HostCmd_CMD_802_11_SCAN_EXT) {
2604 mwifiex_dbg(adapter, INFO,
2605 "Scan pending in command pending list");
2606 complete_scan = false;
2611 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, scan_flags);
2612 spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, cmd_flags);
2615 mwifiex_complete_scan(priv);
2620 /* This function This function handles the event extended scan report. It
2621 * parses extended scan results and informs to cfg80211 stack.
2623 int mwifiex_handle_event_ext_scan_report(struct mwifiex_private *priv,
2627 struct mwifiex_adapter *adapter = priv->adapter;
2629 u32 bytes_left, bytes_left_for_tlv, idx;
2631 struct mwifiex_ie_types_data *tlv;
2632 struct mwifiex_ie_types_bss_scan_rsp *scan_rsp_tlv;
2633 struct mwifiex_ie_types_bss_scan_info *scan_info_tlv;
2637 struct mwifiex_event_scan_result *event_scan = buf;
2638 u8 num_of_set = event_scan->num_of_set;
2639 u8 *scan_resp = buf + sizeof(struct mwifiex_event_scan_result);
2640 u16 scan_resp_size = le16_to_cpu(event_scan->buf_size);
2642 if (num_of_set > MWIFIEX_MAX_AP) {
2643 mwifiex_dbg(adapter, ERROR,
2644 "EXT_SCAN: Invalid number of AP returned (%d)!!\n",
2647 goto check_next_scan;
2650 bytes_left = scan_resp_size;
2651 mwifiex_dbg(adapter, INFO,
2652 "EXT_SCAN: size %d, returned %d APs...",
2653 scan_resp_size, num_of_set);
2654 mwifiex_dbg_dump(adapter, CMD_D, "EXT_SCAN buffer:", buf,
2656 sizeof(struct mwifiex_event_scan_result));
2658 tlv = (struct mwifiex_ie_types_data *)scan_resp;
2660 for (idx = 0; idx < num_of_set && bytes_left; idx++) {
2661 type = le16_to_cpu(tlv->header.type);
2662 len = le16_to_cpu(tlv->header.len);
2663 if (bytes_left < sizeof(struct mwifiex_ie_types_header) + len) {
2664 mwifiex_dbg(adapter, ERROR,
2665 "EXT_SCAN: Error bytes left < TLV length\n");
2668 scan_rsp_tlv = NULL;
2669 scan_info_tlv = NULL;
2670 bytes_left_for_tlv = bytes_left;
2672 /* BSS response TLV with beacon or probe response buffer
2673 * at the initial position of each descriptor
2675 if (type != TLV_TYPE_BSS_SCAN_RSP)
2678 bss_info = (u8 *)tlv;
2679 scan_rsp_tlv = (struct mwifiex_ie_types_bss_scan_rsp *)tlv;
2680 tlv = (struct mwifiex_ie_types_data *)(tlv->data + len);
2681 bytes_left_for_tlv -=
2682 (len + sizeof(struct mwifiex_ie_types_header));
2684 while (bytes_left_for_tlv >=
2685 sizeof(struct mwifiex_ie_types_header) &&
2686 le16_to_cpu(tlv->header.type) != TLV_TYPE_BSS_SCAN_RSP) {
2687 type = le16_to_cpu(tlv->header.type);
2688 len = le16_to_cpu(tlv->header.len);
2689 if (bytes_left_for_tlv <
2690 sizeof(struct mwifiex_ie_types_header) + len) {
2691 mwifiex_dbg(adapter, ERROR,
2692 "EXT_SCAN: Error in processing TLV,\t"
2693 "bytes left < TLV length\n");
2694 scan_rsp_tlv = NULL;
2695 bytes_left_for_tlv = 0;
2699 case TLV_TYPE_BSS_SCAN_INFO:
2701 (struct mwifiex_ie_types_bss_scan_info *)tlv;
2703 sizeof(struct mwifiex_ie_types_bss_scan_info) -
2704 sizeof(struct mwifiex_ie_types_header)) {
2705 bytes_left_for_tlv = 0;
2712 tlv = (struct mwifiex_ie_types_data *)(tlv->data + len);
2714 (len + sizeof(struct mwifiex_ie_types_header));
2715 bytes_left_for_tlv -=
2716 (len + sizeof(struct mwifiex_ie_types_header));
2722 /* Advance pointer to the beacon buffer length and
2723 * update the bytes count so that the function
2724 * wlan_interpret_bss_desc_with_ie() can handle the
2725 * scan buffer withut any change
2727 bss_info += sizeof(u16);
2728 bytes_left -= sizeof(u16);
2730 if (scan_info_tlv) {
2731 rssi = (s32)(s16)(le16_to_cpu(scan_info_tlv->rssi));
2732 rssi *= 100; /* Convert dBm to mBm */
2733 mwifiex_dbg(adapter, INFO,
2734 "info: InterpretIE: RSSI=%d\n", rssi);
2735 fw_tsf = le64_to_cpu(scan_info_tlv->tsf);
2736 radio_type = &scan_info_tlv->radio_type;
2740 ret = mwifiex_parse_single_response_buf(priv, &bss_info,
2741 &bytes_left, fw_tsf,
2742 radio_type, true, rssi);
2744 goto check_next_scan;
2748 if (!event_scan->more_event)
2749 mwifiex_check_next_scan_command(priv);
2755 * This function prepares command for background scan query.
2757 * Preparation includes -
2758 * - Setting command ID and proper size
2759 * - Setting background scan flush parameter
2760 * - Ensuring correct endian-ness
2762 int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command *cmd)
2764 struct host_cmd_ds_802_11_bg_scan_query *bg_query =
2765 &cmd->params.bg_scan_query;
2767 cmd->command = cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY);
2768 cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query)
2771 bg_query->flush = 1;
2777 * This function inserts scan command node to the scan pending queue.
2780 mwifiex_queue_scan_cmd(struct mwifiex_private *priv,
2781 struct cmd_ctrl_node *cmd_node)
2783 struct mwifiex_adapter *adapter = priv->adapter;
2784 unsigned long flags;
2786 cmd_node->wait_q_enabled = true;
2787 cmd_node->condition = &adapter->scan_wait_q_woken;
2788 spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
2789 list_add_tail(&cmd_node->list, &adapter->scan_pending_q);
2790 spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);
2794 * This function sends a scan command for all available channels to the
2795 * firmware, filtered on a specific SSID.
2797 static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv,
2798 struct cfg80211_ssid *req_ssid)
2800 struct mwifiex_adapter *adapter = priv->adapter;
2802 struct mwifiex_user_scan_cfg *scan_cfg;
2804 if (adapter->scan_processing) {
2805 mwifiex_dbg(adapter, WARN,
2806 "cmd: Scan already in process...\n");
2810 if (priv->scan_block) {
2811 mwifiex_dbg(adapter, WARN,
2812 "cmd: Scan is blocked during association...\n");
2816 scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg), GFP_KERNEL);
2820 scan_cfg->ssid_list = req_ssid;
2821 scan_cfg->num_ssids = 1;
2823 ret = mwifiex_scan_networks(priv, scan_cfg);
2830 * Sends IOCTL request to start a scan.
2832 * This function allocates the IOCTL request buffer, fills it
2833 * with requisite parameters and calls the IOCTL handler.
2835 * Scan command can be issued for both normal scan and specific SSID
2836 * scan, depending upon whether an SSID is provided or not.
2838 int mwifiex_request_scan(struct mwifiex_private *priv,
2839 struct cfg80211_ssid *req_ssid)
2843 if (mutex_lock_interruptible(&priv->async_mutex)) {
2844 mwifiex_dbg(priv->adapter, ERROR,
2845 "%s: acquire semaphore fail\n",
2850 priv->adapter->scan_wait_q_woken = false;
2852 if (req_ssid && req_ssid->ssid_len != 0)
2853 /* Specific SSID scan */
2854 ret = mwifiex_scan_specific_ssid(priv, req_ssid);
2857 ret = mwifiex_scan_networks(priv, NULL);
2859 mutex_unlock(&priv->async_mutex);
2865 * This function appends the vendor specific IE TLV to a buffer.
2868 mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv,
2869 u16 vsie_mask, u8 **buffer)
2871 int id, ret_len = 0;
2872 struct mwifiex_ie_types_vendor_param_set *vs_param_set;
2880 * Traverse through the saved vendor specific IE array and append
2881 * the selected(scan/assoc/adhoc) IE as TLV to the command
2883 for (id = 0; id < MWIFIEX_MAX_VSIE_NUM; id++) {
2884 if (priv->vs_ie[id].mask & vsie_mask) {
2886 (struct mwifiex_ie_types_vendor_param_set *)
2888 vs_param_set->header.type =
2889 cpu_to_le16(TLV_TYPE_PASSTHROUGH);
2890 vs_param_set->header.len =
2891 cpu_to_le16((((u16) priv->vs_ie[id].ie[1])
2893 if (le16_to_cpu(vs_param_set->header.len) >
2894 MWIFIEX_MAX_VSIE_LEN) {
2895 mwifiex_dbg(priv->adapter, ERROR,
2896 "Invalid param length!\n");
2900 memcpy(vs_param_set->ie, priv->vs_ie[id].ie,
2901 le16_to_cpu(vs_param_set->header.len));
2902 *buffer += le16_to_cpu(vs_param_set->header.len) +
2903 sizeof(struct mwifiex_ie_types_header);
2904 ret_len += le16_to_cpu(vs_param_set->header.len) +
2905 sizeof(struct mwifiex_ie_types_header);
2912 * This function saves a beacon buffer of the current BSS descriptor.
2914 * The current beacon buffer is saved so that it can be restored in the
2915 * following cases that makes the beacon buffer not to contain the current
2916 * ssid's beacon buffer.
2917 * - The current ssid was not found somehow in the last scan.
2918 * - The current ssid was the last entry of the scan table and overloaded.
2921 mwifiex_save_curr_bcn(struct mwifiex_private *priv)
2923 struct mwifiex_bssdescriptor *curr_bss =
2924 &priv->curr_bss_params.bss_descriptor;
2926 if (!curr_bss->beacon_buf_size)
2929 /* allocate beacon buffer at 1st time; or if it's size has changed */
2930 if (!priv->curr_bcn_buf ||
2931 priv->curr_bcn_size != curr_bss->beacon_buf_size) {
2932 priv->curr_bcn_size = curr_bss->beacon_buf_size;
2934 kfree(priv->curr_bcn_buf);
2935 priv->curr_bcn_buf = kmalloc(curr_bss->beacon_buf_size,
2937 if (!priv->curr_bcn_buf)
2941 memcpy(priv->curr_bcn_buf, curr_bss->beacon_buf,
2942 curr_bss->beacon_buf_size);
2943 mwifiex_dbg(priv->adapter, INFO,
2944 "info: current beacon saved %d\n",
2945 priv->curr_bcn_size);
2947 curr_bss->beacon_buf = priv->curr_bcn_buf;
2949 /* adjust the pointers in the current BSS descriptor */
2950 if (curr_bss->bcn_wpa_ie)
2951 curr_bss->bcn_wpa_ie =
2952 (struct ieee_types_vendor_specific *)
2953 (curr_bss->beacon_buf +
2954 curr_bss->wpa_offset);
2956 if (curr_bss->bcn_rsn_ie)
2957 curr_bss->bcn_rsn_ie = (struct ieee_types_generic *)
2958 (curr_bss->beacon_buf +
2959 curr_bss->rsn_offset);
2961 if (curr_bss->bcn_ht_cap)
2962 curr_bss->bcn_ht_cap = (struct ieee80211_ht_cap *)
2963 (curr_bss->beacon_buf +
2964 curr_bss->ht_cap_offset);
2966 if (curr_bss->bcn_ht_oper)
2967 curr_bss->bcn_ht_oper = (struct ieee80211_ht_operation *)
2968 (curr_bss->beacon_buf +
2969 curr_bss->ht_info_offset);
2971 if (curr_bss->bcn_vht_cap)
2972 curr_bss->bcn_vht_cap = (void *)(curr_bss->beacon_buf +
2973 curr_bss->vht_cap_offset);
2975 if (curr_bss->bcn_vht_oper)
2976 curr_bss->bcn_vht_oper = (void *)(curr_bss->beacon_buf +
2977 curr_bss->vht_info_offset);
2979 if (curr_bss->bcn_bss_co_2040)
2980 curr_bss->bcn_bss_co_2040 =
2981 (curr_bss->beacon_buf + curr_bss->bss_co_2040_offset);
2983 if (curr_bss->bcn_ext_cap)
2984 curr_bss->bcn_ext_cap = curr_bss->beacon_buf +
2985 curr_bss->ext_cap_offset;
2987 if (curr_bss->oper_mode)
2988 curr_bss->oper_mode = (void *)(curr_bss->beacon_buf +
2989 curr_bss->oper_mode_offset);
2993 * This function frees the current BSS descriptor beacon buffer.
2996 mwifiex_free_curr_bcn(struct mwifiex_private *priv)
2998 kfree(priv->curr_bcn_buf);
2999 priv->curr_bcn_buf = NULL;