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
*) bss_desc
->bcn_wpa_ie
->data
;
185 oui
= &mwifiex_wpa_oui
[cipher
][0];
186 ret
= mwifiex_search_oui_in_ie(iebody
, oui
);
194 * This function compares two SSIDs and checks if they match.
197 mwifiex_ssid_cmp(struct cfg80211_ssid
*ssid1
, struct cfg80211_ssid
*ssid2
)
199 if (!ssid1
|| !ssid2
|| (ssid1
->ssid_len
!= ssid2
->ssid_len
))
201 return memcmp(ssid1
->ssid
, ssid2
->ssid
, ssid1
->ssid_len
);
205 * This function checks if wapi is enabled in driver and scanned network is
206 * compatible with it.
209 mwifiex_is_bss_wapi(struct mwifiex_private
*priv
,
210 struct mwifiex_bssdescriptor
*bss_desc
)
212 if (priv
->sec_info
.wapi_enabled
&&
213 has_ieee_hdr(bss_desc
->bcn_wapi_ie
, WLAN_EID_BSS_AC_ACCESS_DELAY
))
219 * This function checks if driver is configured with no security mode and
220 * scanned network is compatible with it.
223 mwifiex_is_bss_no_sec(struct mwifiex_private
*priv
,
224 struct mwifiex_bssdescriptor
*bss_desc
)
226 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
227 !priv
->sec_info
.wpa2_enabled
&&
228 !has_vendor_hdr(bss_desc
->bcn_wpa_ie
, WLAN_EID_VENDOR_SPECIFIC
) &&
229 !has_ieee_hdr(bss_desc
->bcn_rsn_ie
, WLAN_EID_RSN
) &&
230 !priv
->sec_info
.encryption_mode
&& !bss_desc
->privacy
) {
237 * This function checks if static WEP is enabled in driver and scanned network
238 * is compatible with it.
241 mwifiex_is_bss_static_wep(struct mwifiex_private
*priv
,
242 struct mwifiex_bssdescriptor
*bss_desc
)
244 if (priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
245 !priv
->sec_info
.wpa2_enabled
&& bss_desc
->privacy
) {
252 * This function checks if wpa is enabled in driver and scanned network is
253 * compatible with it.
256 mwifiex_is_bss_wpa(struct mwifiex_private
*priv
,
257 struct mwifiex_bssdescriptor
*bss_desc
)
259 if (!priv
->sec_info
.wep_enabled
&& priv
->sec_info
.wpa_enabled
&&
260 !priv
->sec_info
.wpa2_enabled
&&
261 has_vendor_hdr(bss_desc
->bcn_wpa_ie
, WLAN_EID_VENDOR_SPECIFIC
)
263 * Privacy bit may NOT be set in some APs like
264 * LinkSys WRT54G && bss_desc->privacy
267 dbg_security_flags(INFO
, "WPA", priv
, bss_desc
);
274 * This function checks if wpa2 is enabled in driver and scanned network is
275 * compatible with it.
278 mwifiex_is_bss_wpa2(struct mwifiex_private
*priv
,
279 struct mwifiex_bssdescriptor
*bss_desc
)
281 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
282 priv
->sec_info
.wpa2_enabled
&&
283 has_ieee_hdr(bss_desc
->bcn_rsn_ie
, WLAN_EID_RSN
)) {
285 * Privacy bit may NOT be set in some APs like
286 * LinkSys WRT54G && bss_desc->privacy
288 dbg_security_flags(INFO
, "WAP2", priv
, bss_desc
);
295 * This function checks if adhoc AES is enabled in driver and scanned network is
296 * compatible with it.
299 mwifiex_is_bss_adhoc_aes(struct mwifiex_private
*priv
,
300 struct mwifiex_bssdescriptor
*bss_desc
)
302 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
303 !priv
->sec_info
.wpa2_enabled
&&
304 !has_vendor_hdr(bss_desc
->bcn_wpa_ie
, WLAN_EID_VENDOR_SPECIFIC
) &&
305 !has_ieee_hdr(bss_desc
->bcn_rsn_ie
, WLAN_EID_RSN
) &&
306 !priv
->sec_info
.encryption_mode
&& bss_desc
->privacy
) {
313 * This function checks if dynamic WEP is enabled in driver and scanned network
314 * is compatible with it.
317 mwifiex_is_bss_dynamic_wep(struct mwifiex_private
*priv
,
318 struct mwifiex_bssdescriptor
*bss_desc
)
320 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
321 !priv
->sec_info
.wpa2_enabled
&&
322 !has_vendor_hdr(bss_desc
->bcn_wpa_ie
, WLAN_EID_VENDOR_SPECIFIC
) &&
323 !has_ieee_hdr(bss_desc
->bcn_rsn_ie
, WLAN_EID_RSN
) &&
324 priv
->sec_info
.encryption_mode
&& bss_desc
->privacy
) {
325 dbg_security_flags(INFO
, "dynamic", priv
, bss_desc
);
332 * This function checks if a scanned network is compatible with the driver
335 * WEP WPA WPA2 ad-hoc encrypt Network
336 * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible
337 * 0 0 0 0 NONE 0 0 0 yes No security
338 * 0 1 0 0 x 1x 1 x yes WPA (disable
340 * 0 0 1 0 x 1x x 1 yes WPA2 (disable
342 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
343 * 1 0 0 0 NONE 1 0 0 yes Static WEP
345 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
347 * Compatibility is not matched while roaming, except for mode.
350 mwifiex_is_network_compatible(struct mwifiex_private
*priv
,
351 struct mwifiex_bssdescriptor
*bss_desc
, u32 mode
)
353 struct mwifiex_adapter
*adapter
= priv
->adapter
;
355 bss_desc
->disable_11n
= false;
357 /* Don't check for compatibility if roaming */
358 if (priv
->media_connected
&&
359 (priv
->bss_mode
== NL80211_IFTYPE_STATION
) &&
360 (bss_desc
->bss_mode
== NL80211_IFTYPE_STATION
))
363 if (priv
->wps
.session_enable
) {
364 mwifiex_dbg(adapter
, IOCTL
,
365 "info: return success directly in WPS period\n");
369 if (bss_desc
->chan_sw_ie_present
) {
370 mwifiex_dbg(adapter
, INFO
,
371 "Don't connect to AP with WLAN_EID_CHANNEL_SWITCH\n");
375 if (mwifiex_is_bss_wapi(priv
, bss_desc
)) {
376 mwifiex_dbg(adapter
, INFO
,
377 "info: return success for WAPI AP\n");
381 if (bss_desc
->bss_mode
== mode
) {
382 if (mwifiex_is_bss_no_sec(priv
, bss_desc
)) {
385 } else if (mwifiex_is_bss_static_wep(priv
, bss_desc
)) {
386 /* Static WEP enabled */
387 mwifiex_dbg(adapter
, INFO
,
388 "info: Disable 11n in WEP mode.\n");
389 bss_desc
->disable_11n
= true;
391 } else if (mwifiex_is_bss_wpa(priv
, bss_desc
)) {
393 if (((priv
->adapter
->config_bands
& BAND_GN
||
394 priv
->adapter
->config_bands
& BAND_AN
) &&
395 bss_desc
->bcn_ht_cap
) &&
396 !mwifiex_is_wpa_oui_present(bss_desc
,
397 CIPHER_SUITE_CCMP
)) {
399 if (mwifiex_is_wpa_oui_present
400 (bss_desc
, CIPHER_SUITE_TKIP
)) {
401 mwifiex_dbg(adapter
, INFO
,
402 "info: Disable 11n if AES\t"
403 "is not supported by AP\n");
404 bss_desc
->disable_11n
= true;
410 } else if (mwifiex_is_bss_wpa2(priv
, bss_desc
)) {
412 if (((priv
->adapter
->config_bands
& BAND_GN
||
413 priv
->adapter
->config_bands
& BAND_AN
) &&
414 bss_desc
->bcn_ht_cap
) &&
415 !mwifiex_is_rsn_oui_present(bss_desc
,
416 CIPHER_SUITE_CCMP
)) {
418 if (mwifiex_is_rsn_oui_present
419 (bss_desc
, CIPHER_SUITE_TKIP
)) {
420 mwifiex_dbg(adapter
, INFO
,
421 "info: Disable 11n if AES\t"
422 "is not supported by AP\n");
423 bss_desc
->disable_11n
= true;
429 } else if (mwifiex_is_bss_adhoc_aes(priv
, bss_desc
)) {
430 /* Ad-hoc AES enabled */
432 } else if (mwifiex_is_bss_dynamic_wep(priv
, bss_desc
)) {
433 /* Dynamic WEP enabled */
437 /* Security doesn't match */
438 dbg_security_flags(ERROR
, "failed", priv
, bss_desc
);
442 /* Mode doesn't match */
447 * This function creates a channel list for the driver to scan, based
448 * on region/band information.
450 * This routine is used for any scan that is not provided with a
451 * specific channel list to scan.
454 mwifiex_scan_create_channel_list(struct mwifiex_private
*priv
,
455 const struct mwifiex_user_scan_cfg
457 struct mwifiex_chan_scan_param_set
461 enum nl80211_band band
;
462 struct ieee80211_supported_band
*sband
;
463 struct ieee80211_channel
*ch
;
464 struct mwifiex_adapter
*adapter
= priv
->adapter
;
467 for (band
= 0; (band
< NUM_NL80211_BANDS
) ; band
++) {
469 if (!priv
->wdev
.wiphy
->bands
[band
])
472 sband
= priv
->wdev
.wiphy
->bands
[band
];
474 for (i
= 0; (i
< sband
->n_channels
) ; i
++) {
475 ch
= &sband
->channels
[i
];
476 if (ch
->flags
& IEEE80211_CHAN_DISABLED
)
478 scan_chan_list
[chan_idx
].radio_type
= band
;
481 user_scan_in
->chan_list
[0].scan_time
)
482 scan_chan_list
[chan_idx
].max_scan_time
=
483 cpu_to_le16((u16
) user_scan_in
->
484 chan_list
[0].scan_time
);
485 else if (ch
->flags
& IEEE80211_CHAN_NO_IR
)
486 scan_chan_list
[chan_idx
].max_scan_time
=
487 cpu_to_le16(adapter
->passive_scan_time
);
489 scan_chan_list
[chan_idx
].max_scan_time
=
490 cpu_to_le16(adapter
->active_scan_time
);
492 if (ch
->flags
& IEEE80211_CHAN_NO_IR
)
493 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
494 |= (MWIFIEX_PASSIVE_SCAN
|
495 MWIFIEX_HIDDEN_SSID_REPORT
);
497 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
498 &= ~MWIFIEX_PASSIVE_SCAN
;
499 scan_chan_list
[chan_idx
].chan_number
=
502 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
503 |= MWIFIEX_DISABLE_CHAN_FILT
;
506 scan_chan_list
[chan_idx
].max_scan_time
=
507 cpu_to_le16(adapter
->specific_scan_time
);
516 /* This function creates a channel list tlv for bgscan config, based
517 * on region/band information.
520 mwifiex_bgscan_create_channel_list(struct mwifiex_private
*priv
,
521 const struct mwifiex_bg_scan_cfg
523 struct mwifiex_chan_scan_param_set
526 enum nl80211_band band
;
527 struct ieee80211_supported_band
*sband
;
528 struct ieee80211_channel
*ch
;
529 struct mwifiex_adapter
*adapter
= priv
->adapter
;
532 for (band
= 0; (band
< NUM_NL80211_BANDS
); band
++) {
533 if (!priv
->wdev
.wiphy
->bands
[band
])
536 sband
= priv
->wdev
.wiphy
->bands
[band
];
538 for (i
= 0; (i
< sband
->n_channels
) ; i
++) {
539 ch
= &sband
->channels
[i
];
540 if (ch
->flags
& IEEE80211_CHAN_DISABLED
)
542 scan_chan_list
[chan_idx
].radio_type
= band
;
544 if (bgscan_cfg_in
->chan_list
[0].scan_time
)
545 scan_chan_list
[chan_idx
].max_scan_time
=
546 cpu_to_le16((u16
)bgscan_cfg_in
->
547 chan_list
[0].scan_time
);
548 else if (ch
->flags
& IEEE80211_CHAN_NO_IR
)
549 scan_chan_list
[chan_idx
].max_scan_time
=
550 cpu_to_le16(adapter
->passive_scan_time
);
552 scan_chan_list
[chan_idx
].max_scan_time
=
553 cpu_to_le16(adapter
->
556 if (ch
->flags
& IEEE80211_CHAN_NO_IR
)
557 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
558 |= MWIFIEX_PASSIVE_SCAN
;
560 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
561 &= ~MWIFIEX_PASSIVE_SCAN
;
563 scan_chan_list
[chan_idx
].chan_number
=
571 /* This function appends rate TLV to scan config command. */
573 mwifiex_append_rate_tlv(struct mwifiex_private
*priv
,
574 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
577 struct mwifiex_ie_types_rates_param_set
*rates_tlv
;
578 u8 rates
[MWIFIEX_SUPPORTED_RATES
], *tlv_pos
;
581 memset(rates
, 0, sizeof(rates
));
583 tlv_pos
= (u8
*)scan_cfg_out
->tlv_buf
+ scan_cfg_out
->tlv_buf_len
;
585 if (priv
->scan_request
)
586 rates_size
= mwifiex_get_rates_from_cfg80211(priv
, rates
,
589 rates_size
= mwifiex_get_supported_rates(priv
, rates
);
591 mwifiex_dbg(priv
->adapter
, CMD
,
592 "info: SCAN_CMD: Rates size = %d\n",
594 rates_tlv
= (struct mwifiex_ie_types_rates_param_set
*)tlv_pos
;
595 rates_tlv
->header
.type
= cpu_to_le16(WLAN_EID_SUPP_RATES
);
596 rates_tlv
->header
.len
= cpu_to_le16((u16
) rates_size
);
597 memcpy(rates_tlv
->rates
, rates
, rates_size
);
598 scan_cfg_out
->tlv_buf_len
+= sizeof(rates_tlv
->header
) + rates_size
;
604 * This function constructs and sends multiple scan config commands to
607 * Previous routines in the code flow have created a scan command configuration
608 * with any requested TLVs. This function splits the channel TLV into maximum
609 * channels supported per scan lists and sends the portion of the channel TLV,
610 * along with the other TLVs, to the firmware.
613 mwifiex_scan_channel_list(struct mwifiex_private
*priv
,
614 u32 max_chan_per_scan
, u8 filtered_scan
,
615 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
616 struct mwifiex_ie_types_chan_list_param_set
618 struct mwifiex_chan_scan_param_set
*scan_chan_list
)
620 struct mwifiex_adapter
*adapter
= priv
->adapter
;
622 struct mwifiex_chan_scan_param_set
*tmp_chan_list
;
623 struct mwifiex_chan_scan_param_set
*start_chan
;
624 u32 tlv_idx
, rates_size
, cmd_no
;
629 if (!scan_cfg_out
|| !chan_tlv_out
|| !scan_chan_list
) {
630 mwifiex_dbg(priv
->adapter
, ERROR
,
631 "info: Scan: Null detect: %p, %p, %p\n",
632 scan_cfg_out
, chan_tlv_out
, scan_chan_list
);
636 /* Check csa channel expiry before preparing scan list */
637 mwifiex_11h_get_csa_closed_channel(priv
);
639 chan_tlv_out
->header
.type
= cpu_to_le16(TLV_TYPE_CHANLIST
);
641 /* Set the temp channel struct pointer to the start of the desired
643 tmp_chan_list
= scan_chan_list
;
645 /* Loop through the desired channel list, sending a new firmware scan
646 commands for each max_chan_per_scan channels (or for 1,6,11
647 individually if configured accordingly) */
648 while (tmp_chan_list
->chan_number
) {
653 chan_tlv_out
->header
.len
= 0;
654 start_chan
= tmp_chan_list
;
658 * Construct the Channel TLV for the scan command. Continue to
659 * insert channel TLVs until:
660 * - the tlv_idx hits the maximum configured per scan command
661 * - the next channel to insert is 0 (end of desired channel
663 * - done_early is set (controlling individual scanning of
666 while (tlv_idx
< max_chan_per_scan
&&
667 tmp_chan_list
->chan_number
&& !done_early
) {
669 if (tmp_chan_list
->chan_number
== priv
->csa_chan
) {
674 radio_type
= tmp_chan_list
->radio_type
;
675 mwifiex_dbg(priv
->adapter
, INFO
,
676 "info: Scan: Chan(%3d), Radio(%d),\t"
677 "Mode(%d, %d), Dur(%d)\n",
678 tmp_chan_list
->chan_number
,
679 tmp_chan_list
->radio_type
,
680 tmp_chan_list
->chan_scan_mode_bitmap
681 & MWIFIEX_PASSIVE_SCAN
,
682 (tmp_chan_list
->chan_scan_mode_bitmap
683 & MWIFIEX_DISABLE_CHAN_FILT
) >> 1,
684 le16_to_cpu(tmp_chan_list
->max_scan_time
));
686 /* Copy the current channel TLV to the command being
688 memcpy(chan_tlv_out
->chan_scan_param
+ tlv_idx
,
690 sizeof(chan_tlv_out
->chan_scan_param
));
692 /* Increment the TLV header length by the size
694 le16_add_cpu(&chan_tlv_out
->header
.len
,
695 sizeof(chan_tlv_out
->chan_scan_param
));
698 * The tlv buffer length is set to the number of bytes
699 * of the between the channel tlv pointer and the start
700 * of the tlv buffer. This compensates for any TLVs
701 * that were appended before the channel list.
703 scan_cfg_out
->tlv_buf_len
= (u32
) ((u8
*) chan_tlv_out
-
704 scan_cfg_out
->tlv_buf
);
706 /* Add the size of the channel tlv header and the data
708 scan_cfg_out
->tlv_buf_len
+=
709 (sizeof(chan_tlv_out
->header
)
710 + le16_to_cpu(chan_tlv_out
->header
.len
));
712 /* Increment the index to the channel tlv we are
716 /* Count the total scan time per command */
718 le16_to_cpu(tmp_chan_list
->max_scan_time
);
722 /* Stop the loop if the *current* channel is in the
723 1,6,11 set and we are not filtering on a BSSID
725 if (!filtered_scan
&&
726 (tmp_chan_list
->chan_number
== 1 ||
727 tmp_chan_list
->chan_number
== 6 ||
728 tmp_chan_list
->chan_number
== 11))
731 /* Increment the tmp pointer to the next channel to
735 /* Stop the loop if the *next* channel is in the 1,6,11
736 set. This will cause it to be the only channel
737 scanned on the next interation */
738 if (!filtered_scan
&&
739 (tmp_chan_list
->chan_number
== 1 ||
740 tmp_chan_list
->chan_number
== 6 ||
741 tmp_chan_list
->chan_number
== 11))
745 /* The total scan time should be less than scan command timeout
747 if (total_scan_time
> MWIFIEX_MAX_TOTAL_SCAN_TIME
) {
748 mwifiex_dbg(priv
->adapter
, ERROR
,
749 "total scan time %dms\t"
750 "is over limit (%dms), scan skipped\n",
752 MWIFIEX_MAX_TOTAL_SCAN_TIME
);
757 rates_size
= mwifiex_append_rate_tlv(priv
, scan_cfg_out
,
760 priv
->adapter
->scan_channels
= start_chan
;
762 /* Send the scan command to the firmware with the specified
764 if (priv
->adapter
->ext_scan
)
765 cmd_no
= HostCmd_CMD_802_11_SCAN_EXT
;
767 cmd_no
= HostCmd_CMD_802_11_SCAN
;
769 ret
= mwifiex_send_cmd(priv
, cmd_no
, HostCmd_ACT_GEN_SET
,
770 0, scan_cfg_out
, false);
772 /* rate IE is updated per scan command but same starting
773 * pointer is used each time so that rate IE from earlier
774 * scan_cfg_out->buf is overwritten with new one.
776 scan_cfg_out
->tlv_buf_len
-=
777 sizeof(struct mwifiex_ie_types_header
) + rates_size
;
780 mwifiex_cancel_pending_scan_cmd(adapter
);
792 * This function constructs a scan command configuration structure to use
795 * Application layer or other functions can invoke network scanning
796 * with a scan configuration supplied in a user scan configuration structure.
797 * This structure is used as the basis of one or many scan command configuration
798 * commands that are sent to the command processing module and eventually to the
801 * This function creates a scan command configuration structure based on the
802 * following user supplied parameters (if present):
805 * - Number of Probes to be sent
808 * If the SSID or BSSID filter is not present, the filter is disabled/cleared.
809 * If the number of probes is not set, adapter default setting is used.
812 mwifiex_config_scan(struct mwifiex_private
*priv
,
813 const struct mwifiex_user_scan_cfg
*user_scan_in
,
814 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
815 struct mwifiex_ie_types_chan_list_param_set
**chan_list_out
,
816 struct mwifiex_chan_scan_param_set
*scan_chan_list
,
817 u8
*max_chan_per_scan
, u8
*filtered_scan
,
818 u8
*scan_current_only
)
820 struct mwifiex_adapter
*adapter
= priv
->adapter
;
821 struct mwifiex_ie_types_num_probes
*num_probes_tlv
;
822 struct mwifiex_ie_types_scan_chan_gap
*chan_gap_tlv
;
823 struct mwifiex_ie_types_random_mac
*random_mac_tlv
;
824 struct mwifiex_ie_types_wildcard_ssid_params
*wildcard_ssid_tlv
;
825 struct mwifiex_ie_types_bssid_list
*bssid_tlv
;
837 struct mwifiex_ie_types_htcap
*ht_cap
;
838 struct mwifiex_ie_types_bss_mode
*bss_mode
;
839 const u8 zero_mac
[6] = {0, 0, 0, 0, 0, 0};
841 /* The tlv_buf_len is calculated for each scan command. The TLVs added
842 in this routine will be preserved since the routine that sends the
843 command will append channelTLVs at *chan_list_out. The difference
844 between the *chan_list_out and the tlv_buf start will be used to
845 calculate the size of anything we add in this routine. */
846 scan_cfg_out
->tlv_buf_len
= 0;
848 /* Running tlv pointer. Assigned to chan_list_out at end of function
849 so later routines know where channels can be added to the command
851 tlv_pos
= scan_cfg_out
->tlv_buf
;
853 /* Initialize the scan as un-filtered; the flag is later set to TRUE
854 below if a SSID or BSSID filter is sent in the command */
855 *filtered_scan
= false;
857 /* Initialize the scan as not being only on the current channel. If
858 the channel list is customized, only contains one channel, and is
859 the active channel, this is set true and data flow is not halted. */
860 *scan_current_only
= false;
864 /* Default the ssid_filter flag to TRUE, set false under
865 certain wildcard conditions and qualified by the existence
866 of an SSID list before marking the scan as filtered */
869 /* Set the BSS type scan filter, use Adapter setting if
871 scan_cfg_out
->bss_mode
=
872 (u8
)(user_scan_in
->bss_mode
?: adapter
->scan_mode
);
874 /* Set the number of probes to send, use Adapter setting
876 num_probes
= user_scan_in
->num_probes
?: adapter
->scan_probes
;
879 * Set the BSSID filter to the incoming configuration,
880 * if non-zero. If not set, it will remain disabled
883 memcpy(scan_cfg_out
->specific_bssid
,
884 user_scan_in
->specific_bssid
,
885 sizeof(scan_cfg_out
->specific_bssid
));
887 if (adapter
->ext_scan
&&
888 !is_zero_ether_addr(scan_cfg_out
->specific_bssid
)) {
890 (struct mwifiex_ie_types_bssid_list
*)tlv_pos
;
891 bssid_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_BSSID
);
892 bssid_tlv
->header
.len
= cpu_to_le16(ETH_ALEN
);
893 memcpy(bssid_tlv
->bssid
, user_scan_in
->specific_bssid
,
895 tlv_pos
+= sizeof(struct mwifiex_ie_types_bssid_list
);
898 for (i
= 0; i
< user_scan_in
->num_ssids
; i
++) {
899 ssid_len
= user_scan_in
->ssid_list
[i
].ssid_len
;
902 (struct mwifiex_ie_types_wildcard_ssid_params
*)
904 wildcard_ssid_tlv
->header
.type
=
905 cpu_to_le16(TLV_TYPE_WILDCARDSSID
);
906 wildcard_ssid_tlv
->header
.len
= cpu_to_le16(
907 (u16
) (ssid_len
+ sizeof(wildcard_ssid_tlv
->
911 * max_ssid_length = 0 tells firmware to perform
912 * specific scan for the SSID filled, whereas
913 * max_ssid_length = IEEE80211_MAX_SSID_LEN is for
917 wildcard_ssid_tlv
->max_ssid_length
= 0;
919 wildcard_ssid_tlv
->max_ssid_length
=
920 IEEE80211_MAX_SSID_LEN
;
922 if (!memcmp(user_scan_in
->ssid_list
[i
].ssid
,
924 wildcard_ssid_tlv
->max_ssid_length
= 0xfe;
926 memcpy(wildcard_ssid_tlv
->ssid
,
927 user_scan_in
->ssid_list
[i
].ssid
, ssid_len
);
929 tlv_pos
+= (sizeof(wildcard_ssid_tlv
->header
)
930 + le16_to_cpu(wildcard_ssid_tlv
->header
.len
));
932 mwifiex_dbg(adapter
, INFO
,
933 "info: scan: ssid[%d]: %s, %d\n",
934 i
, wildcard_ssid_tlv
->ssid
,
935 wildcard_ssid_tlv
->max_ssid_length
);
937 /* Empty wildcard ssid with a maxlen will match many or
938 potentially all SSIDs (maxlen == 32), therefore do
939 not treat the scan as
941 if (!ssid_len
&& wildcard_ssid_tlv
->max_ssid_length
)
946 * The default number of channels sent in the command is low to
947 * ensure the response buffer from the firmware does not
948 * truncate scan results. That is not an issue with an SSID
949 * or BSSID filter applied to the scan results in the firmware.
951 if ((i
&& ssid_filter
) ||
952 !is_zero_ether_addr(scan_cfg_out
->specific_bssid
))
953 *filtered_scan
= true;
955 if (user_scan_in
->scan_chan_gap
) {
956 mwifiex_dbg(adapter
, INFO
,
957 "info: scan: channel gap = %d\n",
958 user_scan_in
->scan_chan_gap
);
960 MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN
;
962 chan_gap_tlv
= (void *)tlv_pos
;
963 chan_gap_tlv
->header
.type
=
964 cpu_to_le16(TLV_TYPE_SCAN_CHANNEL_GAP
);
965 chan_gap_tlv
->header
.len
=
966 cpu_to_le16(sizeof(chan_gap_tlv
->chan_gap
));
967 chan_gap_tlv
->chan_gap
=
968 cpu_to_le16((user_scan_in
->scan_chan_gap
));
970 sizeof(struct mwifiex_ie_types_scan_chan_gap
);
973 if (!ether_addr_equal(user_scan_in
->random_mac
, zero_mac
)) {
974 random_mac_tlv
= (void *)tlv_pos
;
975 random_mac_tlv
->header
.type
=
976 cpu_to_le16(TLV_TYPE_RANDOM_MAC
);
977 random_mac_tlv
->header
.len
=
978 cpu_to_le16(sizeof(random_mac_tlv
->mac
));
979 ether_addr_copy(random_mac_tlv
->mac
,
980 user_scan_in
->random_mac
);
982 sizeof(struct mwifiex_ie_types_random_mac
);
985 scan_cfg_out
->bss_mode
= (u8
) adapter
->scan_mode
;
986 num_probes
= adapter
->scan_probes
;
990 * If a specific BSSID or SSID is used, the number of channels in the
991 * scan command will be increased to the absolute maximum.
994 *max_chan_per_scan
= MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN
;
996 *max_chan_per_scan
= MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD
;
998 if (adapter
->ext_scan
) {
999 bss_mode
= (struct mwifiex_ie_types_bss_mode
*)tlv_pos
;
1000 bss_mode
->header
.type
= cpu_to_le16(TLV_TYPE_BSS_MODE
);
1001 bss_mode
->header
.len
= cpu_to_le16(sizeof(bss_mode
->bss_mode
));
1002 bss_mode
->bss_mode
= scan_cfg_out
->bss_mode
;
1003 tlv_pos
+= sizeof(bss_mode
->header
) +
1004 le16_to_cpu(bss_mode
->header
.len
);
1007 /* If the input config or adapter has the number of Probes set,
1011 mwifiex_dbg(adapter
, INFO
,
1012 "info: scan: num_probes = %d\n",
1015 num_probes_tlv
= (struct mwifiex_ie_types_num_probes
*) tlv_pos
;
1016 num_probes_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_NUMPROBES
);
1017 num_probes_tlv
->header
.len
=
1018 cpu_to_le16(sizeof(num_probes_tlv
->num_probes
));
1019 num_probes_tlv
->num_probes
= cpu_to_le16((u16
) num_probes
);
1021 tlv_pos
+= sizeof(num_probes_tlv
->header
) +
1022 le16_to_cpu(num_probes_tlv
->header
.len
);
1026 if (ISSUPP_11NENABLED(priv
->adapter
->fw_cap_info
) &&
1027 (priv
->adapter
->config_bands
& BAND_GN
||
1028 priv
->adapter
->config_bands
& BAND_AN
)) {
1029 ht_cap
= (struct mwifiex_ie_types_htcap
*) tlv_pos
;
1030 memset(ht_cap
, 0, sizeof(struct mwifiex_ie_types_htcap
));
1031 ht_cap
->header
.type
= cpu_to_le16(WLAN_EID_HT_CAPABILITY
);
1032 ht_cap
->header
.len
=
1033 cpu_to_le16(sizeof(struct ieee80211_ht_cap
));
1035 mwifiex_band_to_radio_type(priv
->adapter
->config_bands
);
1036 mwifiex_fill_cap_info(priv
, radio_type
, &ht_cap
->ht_cap
);
1037 tlv_pos
+= sizeof(struct mwifiex_ie_types_htcap
);
1040 /* Append vendor specific IE TLV */
1041 mwifiex_cmd_append_vsie_tlv(priv
, MWIFIEX_VSIE_MASK_SCAN
, &tlv_pos
);
1044 * Set the output for the channel TLV to the address in the tlv buffer
1045 * past any TLVs that were added in this function (SSID, num_probes).
1046 * Channel TLVs will be added past this for each scan command,
1047 * preserving the TLVs that were previously added.
1050 (struct mwifiex_ie_types_chan_list_param_set
*) tlv_pos
;
1052 if (user_scan_in
&& user_scan_in
->chan_list
[0].chan_number
) {
1054 mwifiex_dbg(adapter
, INFO
,
1055 "info: Scan: Using supplied channel list\n");
1058 chan_idx
< MWIFIEX_USER_SCAN_CHAN_MAX
&&
1059 user_scan_in
->chan_list
[chan_idx
].chan_number
;
1062 channel
= user_scan_in
->chan_list
[chan_idx
].chan_number
;
1063 scan_chan_list
[chan_idx
].chan_number
= channel
;
1066 user_scan_in
->chan_list
[chan_idx
].radio_type
;
1067 scan_chan_list
[chan_idx
].radio_type
= radio_type
;
1069 scan_type
= user_scan_in
->chan_list
[chan_idx
].scan_type
;
1071 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
1072 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
1073 |= (MWIFIEX_PASSIVE_SCAN
|
1074 MWIFIEX_HIDDEN_SSID_REPORT
);
1076 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
1077 &= ~MWIFIEX_PASSIVE_SCAN
;
1079 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
1080 |= MWIFIEX_DISABLE_CHAN_FILT
;
1082 if (user_scan_in
->chan_list
[chan_idx
].scan_time
) {
1083 scan_dur
= (u16
) user_scan_in
->
1084 chan_list
[chan_idx
].scan_time
;
1086 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
1087 scan_dur
= adapter
->passive_scan_time
;
1088 else if (*filtered_scan
)
1089 scan_dur
= adapter
->specific_scan_time
;
1091 scan_dur
= adapter
->active_scan_time
;
1094 scan_chan_list
[chan_idx
].min_scan_time
=
1095 cpu_to_le16(scan_dur
);
1096 scan_chan_list
[chan_idx
].max_scan_time
=
1097 cpu_to_le16(scan_dur
);
1100 /* Check if we are only scanning the current channel */
1101 if ((chan_idx
== 1) &&
1102 (user_scan_in
->chan_list
[0].chan_number
==
1103 priv
->curr_bss_params
.bss_descriptor
.channel
)) {
1104 *scan_current_only
= true;
1105 mwifiex_dbg(adapter
, INFO
,
1106 "info: Scan: Scanning current channel only\n");
1108 chan_num
= chan_idx
;
1110 mwifiex_dbg(adapter
, INFO
,
1111 "info: Scan: Creating full region channel list\n");
1112 chan_num
= mwifiex_scan_create_channel_list(priv
, user_scan_in
,
1120 * This function inspects the scan response buffer for pointers to
1123 * TLVs can be included at the end of the scan response BSS information.
1125 * Data in the buffer is parsed pointers to TLVs that can potentially
1126 * be passed back in the response.
1129 mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter
*adapter
,
1130 struct mwifiex_ie_types_data
*tlv
,
1131 u32 tlv_buf_size
, u32 req_tlv_type
,
1132 struct mwifiex_ie_types_data
**tlv_data
)
1134 struct mwifiex_ie_types_data
*current_tlv
;
1140 tlv_buf_left
= tlv_buf_size
;
1143 mwifiex_dbg(adapter
, INFO
,
1144 "info: SCAN_RESP: tlv_buf_size = %d\n",
1147 while (tlv_buf_left
>= sizeof(struct mwifiex_ie_types_header
)) {
1149 tlv_type
= le16_to_cpu(current_tlv
->header
.type
);
1150 tlv_len
= le16_to_cpu(current_tlv
->header
.len
);
1152 if (sizeof(tlv
->header
) + tlv_len
> tlv_buf_left
) {
1153 mwifiex_dbg(adapter
, ERROR
,
1154 "SCAN_RESP: TLV buffer corrupt\n");
1158 if (req_tlv_type
== tlv_type
) {
1160 case TLV_TYPE_TSFTIMESTAMP
:
1161 mwifiex_dbg(adapter
, INFO
,
1162 "info: SCAN_RESP: TSF\t"
1163 "timestamp TLV, len = %d\n",
1165 *tlv_data
= current_tlv
;
1167 case TLV_TYPE_CHANNELBANDLIST
:
1168 mwifiex_dbg(adapter
, INFO
,
1169 "info: SCAN_RESP: channel\t"
1170 "band list TLV, len = %d\n",
1172 *tlv_data
= current_tlv
;
1175 mwifiex_dbg(adapter
, ERROR
,
1176 "SCAN_RESP: unhandled TLV = %d\n",
1178 /* Give up, this seems corrupted */
1187 tlv_buf_left
-= (sizeof(tlv
->header
) + tlv_len
);
1189 (struct mwifiex_ie_types_data
*) (current_tlv
->data
+
1196 * This function parses provided beacon buffer and updates
1197 * respective fields in bss descriptor structure.
1199 int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter
*adapter
,
1200 struct mwifiex_bssdescriptor
*bss_entry
)
1204 struct ieee_types_fh_param_set
*fh_param_set
;
1205 struct ieee_types_ds_param_set
*ds_param_set
;
1206 struct ieee_types_cf_param_set
*cf_param_set
;
1207 struct ieee_types_ibss_param_set
*ibss_param_set
;
1214 u8 found_data_rate_ie
;
1216 struct ieee_types_vendor_specific
*vendor_ie
;
1217 const u8 wpa_oui
[4] = { 0x00, 0x50, 0xf2, 0x01 };
1218 const u8 wmm_oui
[4] = { 0x00, 0x50, 0xf2, 0x02 };
1220 found_data_rate_ie
= false;
1222 current_ptr
= bss_entry
->beacon_buf
;
1223 bytes_left
= bss_entry
->beacon_buf_size
;
1225 /* Process variable IE */
1226 while (bytes_left
>= 2) {
1227 element_id
= *current_ptr
;
1228 element_len
= *(current_ptr
+ 1);
1229 total_ie_len
= element_len
+ sizeof(struct ieee_types_header
);
1231 if (bytes_left
< total_ie_len
) {
1232 mwifiex_dbg(adapter
, ERROR
,
1233 "err: InterpretIE: in processing\t"
1234 "IE, bytes left < IE length\n");
1237 switch (element_id
) {
1239 bss_entry
->ssid
.ssid_len
= element_len
;
1240 memcpy(bss_entry
->ssid
.ssid
, (current_ptr
+ 2),
1242 mwifiex_dbg(adapter
, INFO
,
1243 "info: InterpretIE: ssid: %-32s\n",
1244 bss_entry
->ssid
.ssid
);
1247 case WLAN_EID_SUPP_RATES
:
1248 memcpy(bss_entry
->data_rates
, current_ptr
+ 2,
1250 memcpy(bss_entry
->supported_rates
, current_ptr
+ 2,
1252 rate_size
= element_len
;
1253 found_data_rate_ie
= true;
1256 case WLAN_EID_FH_PARAMS
:
1258 (struct ieee_types_fh_param_set
*) current_ptr
;
1259 memcpy(&bss_entry
->phy_param_set
.fh_param_set
,
1261 sizeof(struct ieee_types_fh_param_set
));
1264 case WLAN_EID_DS_PARAMS
:
1266 (struct ieee_types_ds_param_set
*) current_ptr
;
1268 bss_entry
->channel
= ds_param_set
->current_chan
;
1270 memcpy(&bss_entry
->phy_param_set
.ds_param_set
,
1272 sizeof(struct ieee_types_ds_param_set
));
1275 case WLAN_EID_CF_PARAMS
:
1277 (struct ieee_types_cf_param_set
*) current_ptr
;
1278 memcpy(&bss_entry
->ss_param_set
.cf_param_set
,
1280 sizeof(struct ieee_types_cf_param_set
));
1283 case WLAN_EID_IBSS_PARAMS
:
1285 (struct ieee_types_ibss_param_set
*)
1287 memcpy(&bss_entry
->ss_param_set
.ibss_param_set
,
1289 sizeof(struct ieee_types_ibss_param_set
));
1292 case WLAN_EID_ERP_INFO
:
1293 bss_entry
->erp_flags
= *(current_ptr
+ 2);
1296 case WLAN_EID_PWR_CONSTRAINT
:
1297 bss_entry
->local_constraint
= *(current_ptr
+ 2);
1298 bss_entry
->sensed_11h
= true;
1301 case WLAN_EID_CHANNEL_SWITCH
:
1302 bss_entry
->chan_sw_ie_present
= true;
1303 case WLAN_EID_PWR_CAPABILITY
:
1304 case WLAN_EID_TPC_REPORT
:
1305 case WLAN_EID_QUIET
:
1306 bss_entry
->sensed_11h
= true;
1309 case WLAN_EID_EXT_SUPP_RATES
:
1311 * Only process extended supported rate
1312 * if data rate is already found.
1313 * Data rate IE should come before
1314 * extended supported rate IE
1316 if (found_data_rate_ie
) {
1317 if ((element_len
+ rate_size
) >
1318 MWIFIEX_SUPPORTED_RATES
)
1320 (MWIFIEX_SUPPORTED_RATES
-
1323 bytes_to_copy
= element_len
;
1325 rate
= (u8
*) bss_entry
->data_rates
;
1327 memcpy(rate
, current_ptr
+ 2, bytes_to_copy
);
1329 rate
= (u8
*) bss_entry
->supported_rates
;
1331 memcpy(rate
, current_ptr
+ 2, bytes_to_copy
);
1335 case WLAN_EID_VENDOR_SPECIFIC
:
1336 vendor_ie
= (struct ieee_types_vendor_specific
*)
1340 (vendor_ie
->vend_hdr
.oui
, wpa_oui
,
1342 bss_entry
->bcn_wpa_ie
=
1343 (struct ieee_types_vendor_specific
*)
1345 bss_entry
->wpa_offset
= (u16
)
1346 (current_ptr
- bss_entry
->beacon_buf
);
1347 } else if (!memcmp(vendor_ie
->vend_hdr
.oui
, wmm_oui
,
1350 sizeof(struct ieee_types_wmm_parameter
) ||
1352 sizeof(struct ieee_types_wmm_info
))
1354 * Only accept and copy the WMM IE if
1355 * it matches the size expected for the
1356 * WMM Info IE or the WMM Parameter IE.
1358 memcpy((u8
*) &bss_entry
->wmm_ie
,
1359 current_ptr
, total_ie_len
);
1363 bss_entry
->bcn_rsn_ie
=
1364 (struct ieee_types_generic
*) current_ptr
;
1365 bss_entry
->rsn_offset
= (u16
) (current_ptr
-
1366 bss_entry
->beacon_buf
);
1368 case WLAN_EID_BSS_AC_ACCESS_DELAY
:
1369 bss_entry
->bcn_wapi_ie
=
1370 (struct ieee_types_generic
*) current_ptr
;
1371 bss_entry
->wapi_offset
= (u16
) (current_ptr
-
1372 bss_entry
->beacon_buf
);
1374 case WLAN_EID_HT_CAPABILITY
:
1375 bss_entry
->bcn_ht_cap
= (struct ieee80211_ht_cap
*)
1377 sizeof(struct ieee_types_header
));
1378 bss_entry
->ht_cap_offset
= (u16
) (current_ptr
+
1379 sizeof(struct ieee_types_header
) -
1380 bss_entry
->beacon_buf
);
1382 case WLAN_EID_HT_OPERATION
:
1383 bss_entry
->bcn_ht_oper
=
1384 (struct ieee80211_ht_operation
*)(current_ptr
+
1385 sizeof(struct ieee_types_header
));
1386 bss_entry
->ht_info_offset
= (u16
) (current_ptr
+
1387 sizeof(struct ieee_types_header
) -
1388 bss_entry
->beacon_buf
);
1390 case WLAN_EID_VHT_CAPABILITY
:
1391 bss_entry
->disable_11ac
= false;
1392 bss_entry
->bcn_vht_cap
=
1393 (void *)(current_ptr
+
1394 sizeof(struct ieee_types_header
));
1395 bss_entry
->vht_cap_offset
=
1396 (u16
)((u8
*)bss_entry
->bcn_vht_cap
-
1397 bss_entry
->beacon_buf
);
1399 case WLAN_EID_VHT_OPERATION
:
1400 bss_entry
->bcn_vht_oper
=
1401 (void *)(current_ptr
+
1402 sizeof(struct ieee_types_header
));
1403 bss_entry
->vht_info_offset
=
1404 (u16
)((u8
*)bss_entry
->bcn_vht_oper
-
1405 bss_entry
->beacon_buf
);
1407 case WLAN_EID_BSS_COEX_2040
:
1408 bss_entry
->bcn_bss_co_2040
= current_ptr
;
1409 bss_entry
->bss_co_2040_offset
=
1410 (u16
) (current_ptr
- bss_entry
->beacon_buf
);
1412 case WLAN_EID_EXT_CAPABILITY
:
1413 bss_entry
->bcn_ext_cap
= current_ptr
;
1414 bss_entry
->ext_cap_offset
=
1415 (u16
) (current_ptr
- bss_entry
->beacon_buf
);
1417 case WLAN_EID_OPMODE_NOTIF
:
1418 bss_entry
->oper_mode
= (void *)current_ptr
;
1419 bss_entry
->oper_mode_offset
=
1420 (u16
)((u8
*)bss_entry
->oper_mode
-
1421 bss_entry
->beacon_buf
);
1427 current_ptr
+= element_len
+ 2;
1429 /* Need to account for IE ID and IE Len */
1430 bytes_left
-= (element_len
+ 2);
1432 } /* while (bytes_left > 2) */
1437 * This function converts radio type scan parameter to a band configuration
1438 * to be used in join command.
1441 mwifiex_radio_type_to_band(u8 radio_type
)
1443 switch (radio_type
) {
1444 case HostCmd_SCAN_RADIO_TYPE_A
:
1446 case HostCmd_SCAN_RADIO_TYPE_BG
:
1453 * This is an internal function used to start a scan based on an input
1456 * This uses the input user scan configuration information when provided in
1457 * order to send the appropriate scan commands to firmware to populate or
1458 * update the internal driver scan table.
1460 int mwifiex_scan_networks(struct mwifiex_private
*priv
,
1461 const struct mwifiex_user_scan_cfg
*user_scan_in
)
1464 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1465 struct cmd_ctrl_node
*cmd_node
;
1466 union mwifiex_scan_cmd_config_tlv
*scan_cfg_out
;
1467 struct mwifiex_ie_types_chan_list_param_set
*chan_list_out
;
1468 struct mwifiex_chan_scan_param_set
*scan_chan_list
;
1470 u8 scan_current_chan_only
;
1471 u8 max_chan_per_scan
;
1472 unsigned long flags
;
1474 if (adapter
->scan_processing
) {
1475 mwifiex_dbg(adapter
, WARN
,
1476 "cmd: Scan already in process...\n");
1480 if (priv
->scan_block
) {
1481 mwifiex_dbg(adapter
, WARN
,
1482 "cmd: Scan is blocked during association...\n");
1486 if (adapter
->surprise_removed
|| adapter
->is_cmd_timedout
) {
1487 mwifiex_dbg(adapter
, ERROR
,
1488 "Ignore scan. Card removed or firmware in bad state\n");
1492 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1493 adapter
->scan_processing
= true;
1494 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1496 scan_cfg_out
= kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv
),
1498 if (!scan_cfg_out
) {
1503 scan_chan_list
= kcalloc(MWIFIEX_USER_SCAN_CHAN_MAX
,
1504 sizeof(struct mwifiex_chan_scan_param_set
),
1506 if (!scan_chan_list
) {
1507 kfree(scan_cfg_out
);
1512 mwifiex_config_scan(priv
, user_scan_in
, &scan_cfg_out
->config
,
1513 &chan_list_out
, scan_chan_list
, &max_chan_per_scan
,
1514 &filtered_scan
, &scan_current_chan_only
);
1516 ret
= mwifiex_scan_channel_list(priv
, max_chan_per_scan
, filtered_scan
,
1517 &scan_cfg_out
->config
, chan_list_out
,
1520 /* Get scan command from scan_pending_q and put to cmd_pending_q */
1522 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1523 if (!list_empty(&adapter
->scan_pending_q
)) {
1524 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
1525 struct cmd_ctrl_node
, list
);
1526 list_del(&cmd_node
->list
);
1527 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1529 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
1531 queue_work(adapter
->workqueue
, &adapter
->main_work
);
1533 /* Perform internal scan synchronously */
1534 if (!priv
->scan_request
) {
1535 mwifiex_dbg(adapter
, INFO
,
1536 "wait internal scan\n");
1537 mwifiex_wait_queue_complete(adapter
, cmd_node
);
1540 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1545 kfree(scan_cfg_out
);
1546 kfree(scan_chan_list
);
1549 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1550 adapter
->scan_processing
= false;
1551 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1557 * This function prepares a scan command to be sent to the firmware.
1559 * This uses the scan command configuration sent to the command processing
1560 * module in command preparation stage to configure a scan command structure
1561 * to send to firmware.
1563 * The fixed fields specifying the BSS type and BSSID filters as well as a
1564 * variable number/length of TLVs are sent in the command to firmware.
1566 * Preparation also includes -
1567 * - Setting command ID, and proper size
1568 * - Ensuring correct endian-ness
1570 int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command
*cmd
,
1571 struct mwifiex_scan_cmd_config
*scan_cfg
)
1573 struct host_cmd_ds_802_11_scan
*scan_cmd
= &cmd
->params
.scan
;
1575 /* Set fixed field variables in scan command */
1576 scan_cmd
->bss_mode
= scan_cfg
->bss_mode
;
1577 memcpy(scan_cmd
->bssid
, scan_cfg
->specific_bssid
,
1578 sizeof(scan_cmd
->bssid
));
1579 memcpy(scan_cmd
->tlv_buffer
, scan_cfg
->tlv_buf
, scan_cfg
->tlv_buf_len
);
1581 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_SCAN
);
1583 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
1584 cmd
->size
= cpu_to_le16((u16
) (sizeof(scan_cmd
->bss_mode
)
1585 + sizeof(scan_cmd
->bssid
)
1586 + scan_cfg
->tlv_buf_len
+ S_DS_GEN
));
1592 * This function checks compatibility of requested network with current
1595 int mwifiex_check_network_compatibility(struct mwifiex_private
*priv
,
1596 struct mwifiex_bssdescriptor
*bss_desc
)
1603 if ((mwifiex_get_cfp(priv
, (u8
) bss_desc
->bss_band
,
1604 (u16
) bss_desc
->channel
, 0))) {
1605 switch (priv
->bss_mode
) {
1606 case NL80211_IFTYPE_STATION
:
1607 case NL80211_IFTYPE_ADHOC
:
1608 ret
= mwifiex_is_network_compatible(priv
, bss_desc
,
1611 mwifiex_dbg(priv
->adapter
, ERROR
,
1612 "Incompatible network settings\n");
1622 /* This function checks if SSID string contains all zeroes or length is zero */
1623 static bool mwifiex_is_hidden_ssid(struct cfg80211_ssid
*ssid
)
1627 for (idx
= 0; idx
< ssid
->ssid_len
; idx
++) {
1628 if (ssid
->ssid
[idx
])
1635 /* This function checks if any hidden SSID found in passive scan channels
1636 * and save those channels for specific SSID active scan
1638 static int mwifiex_save_hidden_ssid_channels(struct mwifiex_private
*priv
,
1639 struct cfg80211_bss
*bss
)
1641 struct mwifiex_bssdescriptor
*bss_desc
;
1645 /* Allocate and fill new bss descriptor */
1646 bss_desc
= kzalloc(sizeof(*bss_desc
), GFP_KERNEL
);
1650 ret
= mwifiex_fill_new_bss_desc(priv
, bss
, bss_desc
);
1654 if (mwifiex_is_hidden_ssid(&bss_desc
->ssid
)) {
1655 mwifiex_dbg(priv
->adapter
, INFO
, "found hidden SSID\n");
1656 for (chid
= 0 ; chid
< MWIFIEX_USER_SCAN_CHAN_MAX
; chid
++) {
1657 if (priv
->hidden_chan
[chid
].chan_number
==
1658 bss
->channel
->hw_value
)
1661 if (!priv
->hidden_chan
[chid
].chan_number
) {
1662 priv
->hidden_chan
[chid
].chan_number
=
1663 bss
->channel
->hw_value
;
1664 priv
->hidden_chan
[chid
].radio_type
=
1666 priv
->hidden_chan
[chid
].scan_type
=
1667 MWIFIEX_SCAN_TYPE_ACTIVE
;
1678 static int mwifiex_update_curr_bss_params(struct mwifiex_private
*priv
,
1679 struct cfg80211_bss
*bss
)
1681 struct mwifiex_bssdescriptor
*bss_desc
;
1683 unsigned long flags
;
1685 /* Allocate and fill new bss descriptor */
1686 bss_desc
= kzalloc(sizeof(struct mwifiex_bssdescriptor
), GFP_KERNEL
);
1690 ret
= mwifiex_fill_new_bss_desc(priv
, bss
, bss_desc
);
1694 ret
= mwifiex_check_network_compatibility(priv
, bss_desc
);
1698 spin_lock_irqsave(&priv
->curr_bcn_buf_lock
, flags
);
1699 /* Make a copy of current BSSID descriptor */
1700 memcpy(&priv
->curr_bss_params
.bss_descriptor
, bss_desc
,
1701 sizeof(priv
->curr_bss_params
.bss_descriptor
));
1703 /* The contents of beacon_ie will be copied to its own buffer
1704 * in mwifiex_save_curr_bcn()
1706 mwifiex_save_curr_bcn(priv
);
1707 spin_unlock_irqrestore(&priv
->curr_bcn_buf_lock
, flags
);
1710 /* beacon_ie buffer was allocated in function
1711 * mwifiex_fill_new_bss_desc(). Free it now.
1713 kfree(bss_desc
->beacon_buf
);
1719 mwifiex_parse_single_response_buf(struct mwifiex_private
*priv
, u8
**bss_info
,
1720 u32
*bytes_left
, u64 fw_tsf
, u8
*radio_type
,
1721 bool ext_scan
, s32 rssi_val
)
1723 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1724 struct mwifiex_chan_freq_power
*cfp
;
1725 struct cfg80211_bss
*bss
;
1731 u16 beacon_size
= 0;
1735 u16 cap_info_bitmap
;
1738 struct mwifiex_fixed_bcn_param
*bcn_param
;
1739 struct mwifiex_bss_priv
*bss_priv
;
1741 if (*bytes_left
>= sizeof(beacon_size
)) {
1742 /* Extract & convert beacon size from command buffer */
1743 beacon_size
= le16_to_cpu(*(__le16
*)(*bss_info
));
1744 *bytes_left
-= sizeof(beacon_size
);
1745 *bss_info
+= sizeof(beacon_size
);
1748 if (!beacon_size
|| beacon_size
> *bytes_left
) {
1749 *bss_info
+= *bytes_left
;
1754 /* Initialize the current working beacon pointer for this BSS
1757 current_ptr
= *bss_info
;
1759 /* Advance the return beacon pointer past the current beacon */
1760 *bss_info
+= beacon_size
;
1761 *bytes_left
-= beacon_size
;
1763 curr_bcn_bytes
= beacon_size
;
1765 /* First 5 fields are bssid, RSSI(for legacy scan only),
1766 * time stamp, beacon interval, and capability information
1768 if (curr_bcn_bytes
< ETH_ALEN
+ sizeof(u8
) +
1769 sizeof(struct mwifiex_fixed_bcn_param
)) {
1770 mwifiex_dbg(adapter
, ERROR
,
1771 "InterpretIE: not enough bytes left\n");
1775 memcpy(bssid
, current_ptr
, ETH_ALEN
);
1776 current_ptr
+= ETH_ALEN
;
1777 curr_bcn_bytes
-= ETH_ALEN
;
1780 rssi
= (s32
) *current_ptr
;
1781 rssi
= (-rssi
) * 100; /* Convert dBm to mBm */
1782 current_ptr
+= sizeof(u8
);
1783 curr_bcn_bytes
-= sizeof(u8
);
1784 mwifiex_dbg(adapter
, INFO
,
1785 "info: InterpretIE: RSSI=%d\n", rssi
);
1790 bcn_param
= (struct mwifiex_fixed_bcn_param
*)current_ptr
;
1791 current_ptr
+= sizeof(*bcn_param
);
1792 curr_bcn_bytes
-= sizeof(*bcn_param
);
1794 timestamp
= le64_to_cpu(bcn_param
->timestamp
);
1795 beacon_period
= le16_to_cpu(bcn_param
->beacon_period
);
1797 cap_info_bitmap
= le16_to_cpu(bcn_param
->cap_info_bitmap
);
1798 mwifiex_dbg(adapter
, INFO
,
1799 "info: InterpretIE: capabilities=0x%X\n",
1802 /* Rest of the current buffer are IE's */
1803 ie_buf
= current_ptr
;
1804 ie_len
= curr_bcn_bytes
;
1805 mwifiex_dbg(adapter
, INFO
,
1806 "info: InterpretIE: IELength for this AP = %d\n",
1809 while (curr_bcn_bytes
>= sizeof(struct ieee_types_header
)) {
1810 u8 element_id
, element_len
;
1812 element_id
= *current_ptr
;
1813 element_len
= *(current_ptr
+ 1);
1814 if (curr_bcn_bytes
< element_len
+
1815 sizeof(struct ieee_types_header
)) {
1816 mwifiex_dbg(adapter
, ERROR
,
1817 "%s: bytes left < IE length\n", __func__
);
1820 if (element_id
== WLAN_EID_DS_PARAMS
) {
1821 channel
= *(current_ptr
+
1822 sizeof(struct ieee_types_header
));
1826 current_ptr
+= element_len
+ sizeof(struct ieee_types_header
);
1827 curr_bcn_bytes
-= element_len
+
1828 sizeof(struct ieee_types_header
);
1832 struct ieee80211_channel
*chan
;
1835 /* Skip entry if on csa closed channel */
1836 if (channel
== priv
->csa_chan
) {
1837 mwifiex_dbg(adapter
, WARN
,
1838 "Dropping entry on csa closed channel\n");
1844 band
= mwifiex_radio_type_to_band(*radio_type
&
1847 cfp
= mwifiex_get_cfp(priv
, band
, channel
, 0);
1849 freq
= cfp
? cfp
->freq
: 0;
1851 chan
= ieee80211_get_channel(priv
->wdev
.wiphy
, freq
);
1853 if (chan
&& !(chan
->flags
& IEEE80211_CHAN_DISABLED
)) {
1854 bss
= cfg80211_inform_bss(priv
->wdev
.wiphy
,
1855 chan
, CFG80211_BSS_FTYPE_UNKNOWN
,
1857 cap_info_bitmap
, beacon_period
,
1858 ie_buf
, ie_len
, rssi
, GFP_KERNEL
);
1860 bss_priv
= (struct mwifiex_bss_priv
*)bss
->priv
;
1861 bss_priv
->band
= band
;
1862 bss_priv
->fw_tsf
= fw_tsf
;
1863 if (priv
->media_connected
&&
1864 !memcmp(bssid
, priv
->curr_bss_params
.
1865 bss_descriptor
.mac_address
,
1867 mwifiex_update_curr_bss_params(priv
,
1869 cfg80211_put_bss(priv
->wdev
.wiphy
, bss
);
1872 if ((chan
->flags
& IEEE80211_CHAN_RADAR
) ||
1873 (chan
->flags
& IEEE80211_CHAN_NO_IR
)) {
1874 mwifiex_dbg(adapter
, INFO
,
1875 "radar or passive channel %d\n",
1877 mwifiex_save_hidden_ssid_channels(priv
, bss
);
1881 mwifiex_dbg(adapter
, WARN
, "missing BSS channel IE\n");
1887 static void mwifiex_complete_scan(struct mwifiex_private
*priv
)
1889 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1891 adapter
->survey_idx
= 0;
1892 if (adapter
->curr_cmd
->wait_q_enabled
) {
1893 adapter
->cmd_wait_q
.status
= 0;
1894 if (!priv
->scan_request
) {
1895 mwifiex_dbg(adapter
, INFO
,
1896 "complete internal scan\n");
1897 mwifiex_complete_cmd(adapter
, adapter
->curr_cmd
);
1902 /* This function checks if any hidden SSID found in passive scan channels
1903 * and do specific SSID active scan for those channels
1906 mwifiex_active_scan_req_for_passive_chan(struct mwifiex_private
*priv
)
1909 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1911 struct mwifiex_user_scan_cfg
*user_scan_cfg
;
1913 if (adapter
->active_scan_triggered
|| !priv
->scan_request
||
1914 priv
->scan_aborting
) {
1915 adapter
->active_scan_triggered
= false;
1919 if (!priv
->hidden_chan
[0].chan_number
) {
1920 mwifiex_dbg(adapter
, INFO
, "No BSS with hidden SSID found on DFS channels\n");
1923 user_scan_cfg
= kzalloc(sizeof(*user_scan_cfg
), GFP_KERNEL
);
1928 memset(user_scan_cfg
, 0, sizeof(*user_scan_cfg
));
1930 for (id
= 0; id
< MWIFIEX_USER_SCAN_CHAN_MAX
; id
++) {
1931 if (!priv
->hidden_chan
[id
].chan_number
)
1933 memcpy(&user_scan_cfg
->chan_list
[id
],
1934 &priv
->hidden_chan
[id
],
1935 sizeof(struct mwifiex_user_scan_chan
));
1938 adapter
->active_scan_triggered
= true;
1939 ether_addr_copy(user_scan_cfg
->random_mac
, priv
->random_mac
);
1940 user_scan_cfg
->num_ssids
= priv
->scan_request
->n_ssids
;
1941 user_scan_cfg
->ssid_list
= priv
->scan_request
->ssids
;
1943 ret
= mwifiex_scan_networks(priv
, user_scan_cfg
);
1944 kfree(user_scan_cfg
);
1946 memset(&priv
->hidden_chan
, 0, sizeof(priv
->hidden_chan
));
1949 dev_err(priv
->adapter
->dev
, "scan failed: %d\n", ret
);
1955 static void mwifiex_check_next_scan_command(struct mwifiex_private
*priv
)
1957 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1958 struct cmd_ctrl_node
*cmd_node
;
1959 unsigned long flags
;
1961 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1962 if (list_empty(&adapter
->scan_pending_q
)) {
1963 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
1965 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1966 adapter
->scan_processing
= false;
1967 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1969 mwifiex_active_scan_req_for_passive_chan(priv
);
1971 if (!adapter
->ext_scan
)
1972 mwifiex_complete_scan(priv
);
1974 if (priv
->scan_request
) {
1975 struct cfg80211_scan_info info
= {
1979 mwifiex_dbg(adapter
, INFO
,
1980 "info: notifying scan done\n");
1981 cfg80211_scan_done(priv
->scan_request
, &info
);
1982 priv
->scan_request
= NULL
;
1983 priv
->scan_aborting
= false;
1985 priv
->scan_aborting
= false;
1986 mwifiex_dbg(adapter
, INFO
,
1987 "info: scan already aborted\n");
1989 } else if ((priv
->scan_aborting
&& !priv
->scan_request
) ||
1991 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
1993 mwifiex_cancel_pending_scan_cmd(adapter
);
1995 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1996 adapter
->scan_processing
= false;
1997 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1999 if (!adapter
->active_scan_triggered
) {
2000 if (priv
->scan_request
) {
2001 struct cfg80211_scan_info info
= {
2005 mwifiex_dbg(adapter
, INFO
,
2006 "info: aborting scan\n");
2007 cfg80211_scan_done(priv
->scan_request
, &info
);
2008 priv
->scan_request
= NULL
;
2009 priv
->scan_aborting
= false;
2011 priv
->scan_aborting
= false;
2012 mwifiex_dbg(adapter
, INFO
,
2013 "info: scan already aborted\n");
2017 /* Get scan command from scan_pending_q and put to
2020 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
2021 struct cmd_ctrl_node
, list
);
2022 list_del(&cmd_node
->list
);
2023 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
2024 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
, true);
2030 void mwifiex_cancel_scan(struct mwifiex_adapter
*adapter
)
2032 struct mwifiex_private
*priv
;
2033 unsigned long cmd_flags
;
2036 mwifiex_cancel_pending_scan_cmd(adapter
);
2038 if (adapter
->scan_processing
) {
2039 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, cmd_flags
);
2040 adapter
->scan_processing
= false;
2041 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, cmd_flags
);
2042 for (i
= 0; i
< adapter
->priv_num
; i
++) {
2043 priv
= adapter
->priv
[i
];
2046 if (priv
->scan_request
) {
2047 struct cfg80211_scan_info info
= {
2051 mwifiex_dbg(adapter
, INFO
,
2052 "info: aborting scan\n");
2053 cfg80211_scan_done(priv
->scan_request
, &info
);
2054 priv
->scan_request
= NULL
;
2055 priv
->scan_aborting
= false;
2062 * This function handles the command response of scan.
2064 * The response buffer for the scan command has the following
2067 * .-------------------------------------------------------------.
2068 * | Header (4 * sizeof(t_u16)): Standard command response hdr |
2069 * .-------------------------------------------------------------.
2070 * | BufSize (t_u16) : sizeof the BSS Description data |
2071 * .-------------------------------------------------------------.
2072 * | NumOfSet (t_u8) : Number of BSS Descs returned |
2073 * .-------------------------------------------------------------.
2074 * | BSSDescription data (variable, size given in BufSize) |
2075 * .-------------------------------------------------------------.
2076 * | TLV data (variable, size calculated using Header->Size, |
2077 * | BufSize and sizeof the fixed fields above) |
2078 * .-------------------------------------------------------------.
2080 int mwifiex_ret_802_11_scan(struct mwifiex_private
*priv
,
2081 struct host_cmd_ds_command
*resp
)
2084 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2085 struct host_cmd_ds_802_11_scan_rsp
*scan_rsp
;
2086 struct mwifiex_ie_types_data
*tlv_data
;
2087 struct mwifiex_ie_types_tsf_timestamp
*tsf_tlv
;
2093 struct mwifiex_ie_types_chan_band_list_param_set
*chan_band_tlv
;
2094 struct chan_band_param_set
*chan_band
;
2098 struct cfg80211_wowlan_nd_match
*pmatch
;
2099 struct cfg80211_sched_scan_request
*nd_config
= NULL
;
2101 is_bgscan_resp
= (le16_to_cpu(resp
->command
)
2102 == HostCmd_CMD_802_11_BG_SCAN_QUERY
);
2104 scan_rsp
= &resp
->params
.bg_scan_query_resp
.scan_resp
;
2106 scan_rsp
= &resp
->params
.scan_resp
;
2109 if (scan_rsp
->number_of_sets
> MWIFIEX_MAX_AP
) {
2110 mwifiex_dbg(adapter
, ERROR
,
2111 "SCAN_RESP: too many AP returned (%d)\n",
2112 scan_rsp
->number_of_sets
);
2114 goto check_next_scan
;
2117 /* Check csa channel expiry before parsing scan response */
2118 mwifiex_11h_get_csa_closed_channel(priv
);
2120 bytes_left
= le16_to_cpu(scan_rsp
->bss_descript_size
);
2121 mwifiex_dbg(adapter
, INFO
,
2122 "info: SCAN_RESP: bss_descript_size %d\n",
2125 scan_resp_size
= le16_to_cpu(resp
->size
);
2127 mwifiex_dbg(adapter
, INFO
,
2128 "info: SCAN_RESP: returned %d APs before parsing\n",
2129 scan_rsp
->number_of_sets
);
2131 bss_info
= scan_rsp
->bss_desc_and_tlv_buffer
;
2134 * The size of the TLV buffer is equal to the entire command response
2135 * size (scan_resp_size) minus the fixed fields (sizeof()'s), the
2136 * BSS Descriptions (bss_descript_size as bytesLef) and the command
2137 * response header (S_DS_GEN)
2139 tlv_buf_size
= scan_resp_size
- (bytes_left
2140 + sizeof(scan_rsp
->bss_descript_size
)
2141 + sizeof(scan_rsp
->number_of_sets
)
2144 tlv_data
= (struct mwifiex_ie_types_data
*) (scan_rsp
->
2145 bss_desc_and_tlv_buffer
+
2148 /* Search the TLV buffer space in the scan response for any valid
2150 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter
, tlv_data
, tlv_buf_size
,
2151 TLV_TYPE_TSFTIMESTAMP
,
2152 (struct mwifiex_ie_types_data
**)
2155 /* Search the TLV buffer space in the scan response for any valid
2157 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter
, tlv_data
, tlv_buf_size
,
2158 TLV_TYPE_CHANNELBANDLIST
,
2159 (struct mwifiex_ie_types_data
**)
2163 if (priv
->wdev
.wiphy
->wowlan_config
)
2164 nd_config
= priv
->wdev
.wiphy
->wowlan_config
->nd_config
;
2169 kzalloc(sizeof(struct cfg80211_wowlan_nd_match
) +
2170 sizeof(struct cfg80211_wowlan_nd_match
*) *
2171 scan_rsp
->number_of_sets
, GFP_ATOMIC
);
2173 if (adapter
->nd_info
)
2174 adapter
->nd_info
->n_matches
= scan_rsp
->number_of_sets
;
2177 for (idx
= 0; idx
< scan_rsp
->number_of_sets
&& bytes_left
; idx
++) {
2179 * If the TSF TLV was appended to the scan results, save this
2180 * entry's TSF value in the fw_tsf field. It is the firmware's
2181 * TSF value at the time the beacon or probe response was
2185 memcpy(&fw_tsf
, &tsf_tlv
->tsf_data
[idx
* TSF_DATA_SIZE
],
2188 if (chan_band_tlv
) {
2189 chan_band
= &chan_band_tlv
->chan_band_param
[idx
];
2190 radio_type
= &chan_band
->radio_type
;
2195 if (chan_band_tlv
&& adapter
->nd_info
) {
2196 adapter
->nd_info
->matches
[idx
] =
2197 kzalloc(sizeof(*pmatch
) + sizeof(u32
),
2200 pmatch
= adapter
->nd_info
->matches
[idx
];
2203 pmatch
->n_channels
= 1;
2204 pmatch
->channels
[0] = chan_band
->chan_number
;
2208 ret
= mwifiex_parse_single_response_buf(priv
, &bss_info
,
2210 le64_to_cpu(fw_tsf
),
2211 radio_type
, false, 0);
2213 goto check_next_scan
;
2217 mwifiex_check_next_scan_command(priv
);
2222 * This function prepares an extended scan command to be sent to the firmware
2224 * This uses the scan command configuration sent to the command processing
2225 * module in command preparation stage to configure a extended scan command
2226 * structure to send to firmware.
2228 int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private
*priv
,
2229 struct host_cmd_ds_command
*cmd
,
2232 struct host_cmd_ds_802_11_scan_ext
*ext_scan
= &cmd
->params
.ext_scan
;
2233 struct mwifiex_scan_cmd_config
*scan_cfg
= data_buf
;
2235 memcpy(ext_scan
->tlv_buffer
, scan_cfg
->tlv_buf
, scan_cfg
->tlv_buf_len
);
2237 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_SCAN_EXT
);
2239 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
2240 cmd
->size
= cpu_to_le16((u16
)(sizeof(ext_scan
->reserved
)
2241 + scan_cfg
->tlv_buf_len
+ S_DS_GEN
));
2246 /* This function prepares an background scan config command to be sent
2249 int mwifiex_cmd_802_11_bg_scan_config(struct mwifiex_private
*priv
,
2250 struct host_cmd_ds_command
*cmd
,
2253 struct host_cmd_ds_802_11_bg_scan_config
*bgscan_config
=
2254 &cmd
->params
.bg_scan_config
;
2255 struct mwifiex_bg_scan_cfg
*bgscan_cfg_in
= data_buf
;
2256 u8
*tlv_pos
= bgscan_config
->tlv
;
2258 u32 ssid_len
, chan_idx
, scan_type
, scan_dur
, chan_num
;
2260 struct mwifiex_ie_types_num_probes
*num_probes_tlv
;
2261 struct mwifiex_ie_types_repeat_count
*repeat_count_tlv
;
2262 struct mwifiex_ie_types_min_rssi_threshold
*rssi_threshold_tlv
;
2263 struct mwifiex_ie_types_bgscan_start_later
*start_later_tlv
;
2264 struct mwifiex_ie_types_wildcard_ssid_params
*wildcard_ssid_tlv
;
2265 struct mwifiex_ie_types_chan_list_param_set
*chan_list_tlv
;
2266 struct mwifiex_chan_scan_param_set
*temp_chan
;
2268 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_CONFIG
);
2269 cmd
->size
= cpu_to_le16(sizeof(*bgscan_config
) + S_DS_GEN
);
2271 bgscan_config
->action
= cpu_to_le16(bgscan_cfg_in
->action
);
2272 bgscan_config
->enable
= bgscan_cfg_in
->enable
;
2273 bgscan_config
->bss_type
= bgscan_cfg_in
->bss_type
;
2274 bgscan_config
->scan_interval
=
2275 cpu_to_le32(bgscan_cfg_in
->scan_interval
);
2276 bgscan_config
->report_condition
=
2277 cpu_to_le32(bgscan_cfg_in
->report_condition
);
2279 /* stop sched scan */
2280 if (!bgscan_config
->enable
)
2283 bgscan_config
->chan_per_scan
= bgscan_cfg_in
->chan_per_scan
;
2285 num_probes
= (bgscan_cfg_in
->num_probes
? bgscan_cfg_in
->
2286 num_probes
: priv
->adapter
->scan_probes
);
2289 num_probes_tlv
= (struct mwifiex_ie_types_num_probes
*)tlv_pos
;
2290 num_probes_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_NUMPROBES
);
2291 num_probes_tlv
->header
.len
=
2292 cpu_to_le16(sizeof(num_probes_tlv
->num_probes
));
2293 num_probes_tlv
->num_probes
= cpu_to_le16((u16
)num_probes
);
2295 tlv_pos
+= sizeof(num_probes_tlv
->header
) +
2296 le16_to_cpu(num_probes_tlv
->header
.len
);
2299 if (bgscan_cfg_in
->repeat_count
) {
2301 (struct mwifiex_ie_types_repeat_count
*)tlv_pos
;
2302 repeat_count_tlv
->header
.type
=
2303 cpu_to_le16(TLV_TYPE_REPEAT_COUNT
);
2304 repeat_count_tlv
->header
.len
=
2305 cpu_to_le16(sizeof(repeat_count_tlv
->repeat_count
));
2306 repeat_count_tlv
->repeat_count
=
2307 cpu_to_le16(bgscan_cfg_in
->repeat_count
);
2309 tlv_pos
+= sizeof(repeat_count_tlv
->header
) +
2310 le16_to_cpu(repeat_count_tlv
->header
.len
);
2313 if (bgscan_cfg_in
->rssi_threshold
) {
2314 rssi_threshold_tlv
=
2315 (struct mwifiex_ie_types_min_rssi_threshold
*)tlv_pos
;
2316 rssi_threshold_tlv
->header
.type
=
2317 cpu_to_le16(TLV_TYPE_RSSI_LOW
);
2318 rssi_threshold_tlv
->header
.len
=
2319 cpu_to_le16(sizeof(rssi_threshold_tlv
->rssi_threshold
));
2320 rssi_threshold_tlv
->rssi_threshold
=
2321 cpu_to_le16(bgscan_cfg_in
->rssi_threshold
);
2323 tlv_pos
+= sizeof(rssi_threshold_tlv
->header
) +
2324 le16_to_cpu(rssi_threshold_tlv
->header
.len
);
2327 for (i
= 0; i
< bgscan_cfg_in
->num_ssids
; i
++) {
2328 ssid_len
= bgscan_cfg_in
->ssid_list
[i
].ssid
.ssid_len
;
2331 (struct mwifiex_ie_types_wildcard_ssid_params
*)tlv_pos
;
2332 wildcard_ssid_tlv
->header
.type
=
2333 cpu_to_le16(TLV_TYPE_WILDCARDSSID
);
2334 wildcard_ssid_tlv
->header
.len
= cpu_to_le16(
2335 (u16
)(ssid_len
+ sizeof(wildcard_ssid_tlv
->
2338 /* max_ssid_length = 0 tells firmware to perform
2339 * specific scan for the SSID filled, whereas
2340 * max_ssid_length = IEEE80211_MAX_SSID_LEN is for
2344 wildcard_ssid_tlv
->max_ssid_length
= 0;
2346 wildcard_ssid_tlv
->max_ssid_length
=
2347 IEEE80211_MAX_SSID_LEN
;
2349 memcpy(wildcard_ssid_tlv
->ssid
,
2350 bgscan_cfg_in
->ssid_list
[i
].ssid
.ssid
, ssid_len
);
2352 tlv_pos
+= (sizeof(wildcard_ssid_tlv
->header
)
2353 + le16_to_cpu(wildcard_ssid_tlv
->header
.len
));
2356 chan_list_tlv
= (struct mwifiex_ie_types_chan_list_param_set
*)tlv_pos
;
2358 if (bgscan_cfg_in
->chan_list
[0].chan_number
) {
2359 dev_dbg(priv
->adapter
->dev
, "info: bgscan: Using supplied channel list\n");
2361 chan_list_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_CHANLIST
);
2364 chan_idx
< MWIFIEX_BG_SCAN_CHAN_MAX
&&
2365 bgscan_cfg_in
->chan_list
[chan_idx
].chan_number
;
2367 temp_chan
= chan_list_tlv
->chan_scan_param
+ chan_idx
;
2369 /* Increment the TLV header length by size appended */
2370 le16_add_cpu(&chan_list_tlv
->header
.len
,
2371 sizeof(chan_list_tlv
->chan_scan_param
));
2373 temp_chan
->chan_number
=
2374 bgscan_cfg_in
->chan_list
[chan_idx
].chan_number
;
2375 temp_chan
->radio_type
=
2376 bgscan_cfg_in
->chan_list
[chan_idx
].radio_type
;
2379 bgscan_cfg_in
->chan_list
[chan_idx
].scan_type
;
2381 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
2382 temp_chan
->chan_scan_mode_bitmap
2383 |= MWIFIEX_PASSIVE_SCAN
;
2385 temp_chan
->chan_scan_mode_bitmap
2386 &= ~MWIFIEX_PASSIVE_SCAN
;
2388 if (bgscan_cfg_in
->chan_list
[chan_idx
].scan_time
) {
2389 scan_dur
= (u16
)bgscan_cfg_in
->
2390 chan_list
[chan_idx
].scan_time
;
2392 scan_dur
= (scan_type
==
2393 MWIFIEX_SCAN_TYPE_PASSIVE
) ?
2394 priv
->adapter
->passive_scan_time
:
2395 priv
->adapter
->specific_scan_time
;
2398 temp_chan
->min_scan_time
= cpu_to_le16(scan_dur
);
2399 temp_chan
->max_scan_time
= cpu_to_le16(scan_dur
);
2402 dev_dbg(priv
->adapter
->dev
,
2403 "info: bgscan: Creating full region channel list\n");
2405 mwifiex_bgscan_create_channel_list(priv
, bgscan_cfg_in
,
2408 le16_add_cpu(&chan_list_tlv
->header
.len
,
2410 sizeof(chan_list_tlv
->chan_scan_param
[0]));
2413 tlv_pos
+= (sizeof(chan_list_tlv
->header
)
2414 + le16_to_cpu(chan_list_tlv
->header
.len
));
2416 if (bgscan_cfg_in
->start_later
) {
2418 (struct mwifiex_ie_types_bgscan_start_later
*)tlv_pos
;
2419 start_later_tlv
->header
.type
=
2420 cpu_to_le16(TLV_TYPE_BGSCAN_START_LATER
);
2421 start_later_tlv
->header
.len
=
2422 cpu_to_le16(sizeof(start_later_tlv
->start_later
));
2423 start_later_tlv
->start_later
=
2424 cpu_to_le16(bgscan_cfg_in
->start_later
);
2426 tlv_pos
+= sizeof(start_later_tlv
->header
) +
2427 le16_to_cpu(start_later_tlv
->header
.len
);
2430 /* Append vendor specific IE TLV */
2431 mwifiex_cmd_append_vsie_tlv(priv
, MWIFIEX_VSIE_MASK_BGSCAN
, &tlv_pos
);
2433 le16_add_cpu(&cmd
->size
, tlv_pos
- bgscan_config
->tlv
);
2438 int mwifiex_stop_bg_scan(struct mwifiex_private
*priv
)
2440 struct mwifiex_bg_scan_cfg
*bgscan_cfg
;
2442 if (!priv
->sched_scanning
) {
2443 dev_dbg(priv
->adapter
->dev
, "bgscan already stopped!\n");
2447 bgscan_cfg
= kzalloc(sizeof(*bgscan_cfg
), GFP_KERNEL
);
2451 bgscan_cfg
->bss_type
= MWIFIEX_BSS_MODE_INFRA
;
2452 bgscan_cfg
->action
= MWIFIEX_BGSCAN_ACT_SET
;
2453 bgscan_cfg
->enable
= false;
2455 if (mwifiex_send_cmd(priv
, HostCmd_CMD_802_11_BG_SCAN_CONFIG
,
2456 HostCmd_ACT_GEN_SET
, 0, bgscan_cfg
, true)) {
2462 priv
->sched_scanning
= false;
2468 mwifiex_update_chan_statistics(struct mwifiex_private
*priv
,
2469 struct mwifiex_ietypes_chanstats
*tlv_stat
)
2471 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2473 struct mwifiex_fw_chan_stats
*fw_chan_stats
;
2474 struct mwifiex_chan_stats chan_stats
;
2476 fw_chan_stats
= (void *)((u8
*)tlv_stat
+
2477 sizeof(struct mwifiex_ie_types_header
));
2478 num_chan
= le16_to_cpu(tlv_stat
->header
.len
) /
2479 sizeof(struct mwifiex_chan_stats
);
2481 for (i
= 0 ; i
< num_chan
; i
++) {
2482 chan_stats
.chan_num
= fw_chan_stats
->chan_num
;
2483 chan_stats
.bandcfg
= fw_chan_stats
->bandcfg
;
2484 chan_stats
.flags
= fw_chan_stats
->flags
;
2485 chan_stats
.noise
= fw_chan_stats
->noise
;
2486 chan_stats
.total_bss
= le16_to_cpu(fw_chan_stats
->total_bss
);
2487 chan_stats
.cca_scan_dur
=
2488 le16_to_cpu(fw_chan_stats
->cca_scan_dur
);
2489 chan_stats
.cca_busy_dur
=
2490 le16_to_cpu(fw_chan_stats
->cca_busy_dur
);
2491 mwifiex_dbg(adapter
, INFO
,
2492 "chan=%d, noise=%d, total_network=%d scan_duration=%d, busy_duration=%d\n",
2493 chan_stats
.chan_num
,
2495 chan_stats
.total_bss
,
2496 chan_stats
.cca_scan_dur
,
2497 chan_stats
.cca_busy_dur
);
2498 memcpy(&adapter
->chan_stats
[adapter
->survey_idx
++], &chan_stats
,
2499 sizeof(struct mwifiex_chan_stats
));
2504 /* This function handles the command response of extended scan */
2505 int mwifiex_ret_802_11_scan_ext(struct mwifiex_private
*priv
,
2506 struct host_cmd_ds_command
*resp
)
2508 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2509 struct host_cmd_ds_802_11_scan_ext
*ext_scan_resp
;
2510 struct mwifiex_ie_types_header
*tlv
;
2511 struct mwifiex_ietypes_chanstats
*tlv_stat
;
2512 u16 buf_left
, type
, len
;
2514 struct host_cmd_ds_command
*cmd_ptr
;
2515 struct cmd_ctrl_node
*cmd_node
;
2516 unsigned long cmd_flags
, scan_flags
;
2517 bool complete_scan
= false;
2519 mwifiex_dbg(adapter
, INFO
, "info: EXT scan returns successfully\n");
2521 ext_scan_resp
= &resp
->params
.ext_scan
;
2523 tlv
= (void *)ext_scan_resp
->tlv_buffer
;
2524 buf_left
= le16_to_cpu(resp
->size
) - (sizeof(*ext_scan_resp
) + S_DS_GEN
2527 while (buf_left
>= sizeof(struct mwifiex_ie_types_header
)) {
2528 type
= le16_to_cpu(tlv
->type
);
2529 len
= le16_to_cpu(tlv
->len
);
2531 if (buf_left
< (sizeof(struct mwifiex_ie_types_header
) + len
)) {
2532 mwifiex_dbg(adapter
, ERROR
,
2533 "error processing scan response TLVs");
2538 case TLV_TYPE_CHANNEL_STATS
:
2539 tlv_stat
= (void *)tlv
;
2540 mwifiex_update_chan_statistics(priv
, tlv_stat
);
2546 buf_left
-= len
+ sizeof(struct mwifiex_ie_types_header
);
2547 tlv
= (void *)((u8
*)tlv
+ len
+
2548 sizeof(struct mwifiex_ie_types_header
));
2551 spin_lock_irqsave(&adapter
->cmd_pending_q_lock
, cmd_flags
);
2552 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, scan_flags
);
2553 if (list_empty(&adapter
->scan_pending_q
)) {
2554 complete_scan
= true;
2555 list_for_each_entry(cmd_node
, &adapter
->cmd_pending_q
, list
) {
2556 cmd_ptr
= (void *)cmd_node
->cmd_skb
->data
;
2557 if (le16_to_cpu(cmd_ptr
->command
) ==
2558 HostCmd_CMD_802_11_SCAN_EXT
) {
2559 mwifiex_dbg(adapter
, INFO
,
2560 "Scan pending in command pending list");
2561 complete_scan
= false;
2566 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, scan_flags
);
2567 spin_unlock_irqrestore(&adapter
->cmd_pending_q_lock
, cmd_flags
);
2570 mwifiex_complete_scan(priv
);
2575 /* This function This function handles the event extended scan report. It
2576 * parses extended scan results and informs to cfg80211 stack.
2578 int mwifiex_handle_event_ext_scan_report(struct mwifiex_private
*priv
,
2582 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2584 u32 bytes_left
, bytes_left_for_tlv
, idx
;
2586 struct mwifiex_ie_types_data
*tlv
;
2587 struct mwifiex_ie_types_bss_scan_rsp
*scan_rsp_tlv
;
2588 struct mwifiex_ie_types_bss_scan_info
*scan_info_tlv
;
2592 struct mwifiex_event_scan_result
*event_scan
= buf
;
2593 u8 num_of_set
= event_scan
->num_of_set
;
2594 u8
*scan_resp
= buf
+ sizeof(struct mwifiex_event_scan_result
);
2595 u16 scan_resp_size
= le16_to_cpu(event_scan
->buf_size
);
2597 if (num_of_set
> MWIFIEX_MAX_AP
) {
2598 mwifiex_dbg(adapter
, ERROR
,
2599 "EXT_SCAN: Invalid number of AP returned (%d)!!\n",
2602 goto check_next_scan
;
2605 bytes_left
= scan_resp_size
;
2606 mwifiex_dbg(adapter
, INFO
,
2607 "EXT_SCAN: size %d, returned %d APs...",
2608 scan_resp_size
, num_of_set
);
2609 mwifiex_dbg_dump(adapter
, CMD_D
, "EXT_SCAN buffer:", buf
,
2611 sizeof(struct mwifiex_event_scan_result
));
2613 tlv
= (struct mwifiex_ie_types_data
*)scan_resp
;
2615 for (idx
= 0; idx
< num_of_set
&& bytes_left
; idx
++) {
2616 type
= le16_to_cpu(tlv
->header
.type
);
2617 len
= le16_to_cpu(tlv
->header
.len
);
2618 if (bytes_left
< sizeof(struct mwifiex_ie_types_header
) + len
) {
2619 mwifiex_dbg(adapter
, ERROR
,
2620 "EXT_SCAN: Error bytes left < TLV length\n");
2623 scan_rsp_tlv
= NULL
;
2624 scan_info_tlv
= NULL
;
2625 bytes_left_for_tlv
= bytes_left
;
2627 /* BSS response TLV with beacon or probe response buffer
2628 * at the initial position of each descriptor
2630 if (type
!= TLV_TYPE_BSS_SCAN_RSP
)
2633 bss_info
= (u8
*)tlv
;
2634 scan_rsp_tlv
= (struct mwifiex_ie_types_bss_scan_rsp
*)tlv
;
2635 tlv
= (struct mwifiex_ie_types_data
*)(tlv
->data
+ len
);
2636 bytes_left_for_tlv
-=
2637 (len
+ sizeof(struct mwifiex_ie_types_header
));
2639 while (bytes_left_for_tlv
>=
2640 sizeof(struct mwifiex_ie_types_header
) &&
2641 le16_to_cpu(tlv
->header
.type
) != TLV_TYPE_BSS_SCAN_RSP
) {
2642 type
= le16_to_cpu(tlv
->header
.type
);
2643 len
= le16_to_cpu(tlv
->header
.len
);
2644 if (bytes_left_for_tlv
<
2645 sizeof(struct mwifiex_ie_types_header
) + len
) {
2646 mwifiex_dbg(adapter
, ERROR
,
2647 "EXT_SCAN: Error in processing TLV,\t"
2648 "bytes left < TLV length\n");
2649 scan_rsp_tlv
= NULL
;
2650 bytes_left_for_tlv
= 0;
2654 case TLV_TYPE_BSS_SCAN_INFO
:
2656 (struct mwifiex_ie_types_bss_scan_info
*)tlv
;
2658 sizeof(struct mwifiex_ie_types_bss_scan_info
) -
2659 sizeof(struct mwifiex_ie_types_header
)) {
2660 bytes_left_for_tlv
= 0;
2667 tlv
= (struct mwifiex_ie_types_data
*)(tlv
->data
+ len
);
2669 (len
+ sizeof(struct mwifiex_ie_types_header
));
2670 bytes_left_for_tlv
-=
2671 (len
+ sizeof(struct mwifiex_ie_types_header
));
2677 /* Advance pointer to the beacon buffer length and
2678 * update the bytes count so that the function
2679 * wlan_interpret_bss_desc_with_ie() can handle the
2680 * scan buffer withut any change
2682 bss_info
+= sizeof(u16
);
2683 bytes_left
-= sizeof(u16
);
2685 if (scan_info_tlv
) {
2686 rssi
= (s32
)(s16
)(le16_to_cpu(scan_info_tlv
->rssi
));
2687 rssi
*= 100; /* Convert dBm to mBm */
2688 mwifiex_dbg(adapter
, INFO
,
2689 "info: InterpretIE: RSSI=%d\n", rssi
);
2690 fw_tsf
= le64_to_cpu(scan_info_tlv
->tsf
);
2691 radio_type
= &scan_info_tlv
->radio_type
;
2695 ret
= mwifiex_parse_single_response_buf(priv
, &bss_info
,
2696 &bytes_left
, fw_tsf
,
2697 radio_type
, true, rssi
);
2699 goto check_next_scan
;
2703 if (!event_scan
->more_event
)
2704 mwifiex_check_next_scan_command(priv
);
2710 * This function prepares command for background scan query.
2712 * Preparation includes -
2713 * - Setting command ID and proper size
2714 * - Setting background scan flush parameter
2715 * - Ensuring correct endian-ness
2717 int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command
*cmd
)
2719 struct host_cmd_ds_802_11_bg_scan_query
*bg_query
=
2720 &cmd
->params
.bg_scan_query
;
2722 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY
);
2723 cmd
->size
= cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query
)
2726 bg_query
->flush
= 1;
2732 * This function inserts scan command node to the scan pending queue.
2735 mwifiex_queue_scan_cmd(struct mwifiex_private
*priv
,
2736 struct cmd_ctrl_node
*cmd_node
)
2738 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2739 unsigned long flags
;
2741 cmd_node
->wait_q_enabled
= true;
2742 cmd_node
->condition
= &adapter
->scan_wait_q_woken
;
2743 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
2744 list_add_tail(&cmd_node
->list
, &adapter
->scan_pending_q
);
2745 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
2749 * This function sends a scan command for all available channels to the
2750 * firmware, filtered on a specific SSID.
2752 static int mwifiex_scan_specific_ssid(struct mwifiex_private
*priv
,
2753 struct cfg80211_ssid
*req_ssid
)
2755 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2757 struct mwifiex_user_scan_cfg
*scan_cfg
;
2759 if (adapter
->scan_processing
) {
2760 mwifiex_dbg(adapter
, WARN
,
2761 "cmd: Scan already in process...\n");
2765 if (priv
->scan_block
) {
2766 mwifiex_dbg(adapter
, WARN
,
2767 "cmd: Scan is blocked during association...\n");
2771 scan_cfg
= kzalloc(sizeof(struct mwifiex_user_scan_cfg
), GFP_KERNEL
);
2775 ether_addr_copy(scan_cfg
->random_mac
, priv
->random_mac
);
2776 scan_cfg
->ssid_list
= req_ssid
;
2777 scan_cfg
->num_ssids
= 1;
2779 ret
= mwifiex_scan_networks(priv
, scan_cfg
);
2786 * Sends IOCTL request to start a scan.
2788 * This function allocates the IOCTL request buffer, fills it
2789 * with requisite parameters and calls the IOCTL handler.
2791 * Scan command can be issued for both normal scan and specific SSID
2792 * scan, depending upon whether an SSID is provided or not.
2794 int mwifiex_request_scan(struct mwifiex_private
*priv
,
2795 struct cfg80211_ssid
*req_ssid
)
2799 if (down_interruptible(&priv
->async_sem
)) {
2800 mwifiex_dbg(priv
->adapter
, ERROR
,
2801 "%s: acquire semaphore fail\n",
2806 priv
->adapter
->scan_wait_q_woken
= false;
2808 if (req_ssid
&& req_ssid
->ssid_len
!= 0)
2809 /* Specific SSID scan */
2810 ret
= mwifiex_scan_specific_ssid(priv
, req_ssid
);
2813 ret
= mwifiex_scan_networks(priv
, NULL
);
2815 up(&priv
->async_sem
);
2821 * This function appends the vendor specific IE TLV to a buffer.
2824 mwifiex_cmd_append_vsie_tlv(struct mwifiex_private
*priv
,
2825 u16 vsie_mask
, u8
**buffer
)
2827 int id
, ret_len
= 0;
2828 struct mwifiex_ie_types_vendor_param_set
*vs_param_set
;
2836 * Traverse through the saved vendor specific IE array and append
2837 * the selected(scan/assoc/adhoc) IE as TLV to the command
2839 for (id
= 0; id
< MWIFIEX_MAX_VSIE_NUM
; id
++) {
2840 if (priv
->vs_ie
[id
].mask
& vsie_mask
) {
2842 (struct mwifiex_ie_types_vendor_param_set
*)
2844 vs_param_set
->header
.type
=
2845 cpu_to_le16(TLV_TYPE_PASSTHROUGH
);
2846 vs_param_set
->header
.len
=
2847 cpu_to_le16((((u16
) priv
->vs_ie
[id
].ie
[1])
2849 memcpy(vs_param_set
->ie
, priv
->vs_ie
[id
].ie
,
2850 le16_to_cpu(vs_param_set
->header
.len
));
2851 *buffer
+= le16_to_cpu(vs_param_set
->header
.len
) +
2852 sizeof(struct mwifiex_ie_types_header
);
2853 ret_len
+= le16_to_cpu(vs_param_set
->header
.len
) +
2854 sizeof(struct mwifiex_ie_types_header
);
2861 * This function saves a beacon buffer of the current BSS descriptor.
2863 * The current beacon buffer is saved so that it can be restored in the
2864 * following cases that makes the beacon buffer not to contain the current
2865 * ssid's beacon buffer.
2866 * - The current ssid was not found somehow in the last scan.
2867 * - The current ssid was the last entry of the scan table and overloaded.
2870 mwifiex_save_curr_bcn(struct mwifiex_private
*priv
)
2872 struct mwifiex_bssdescriptor
*curr_bss
=
2873 &priv
->curr_bss_params
.bss_descriptor
;
2875 if (!curr_bss
->beacon_buf_size
)
2878 /* allocate beacon buffer at 1st time; or if it's size has changed */
2879 if (!priv
->curr_bcn_buf
||
2880 priv
->curr_bcn_size
!= curr_bss
->beacon_buf_size
) {
2881 priv
->curr_bcn_size
= curr_bss
->beacon_buf_size
;
2883 kfree(priv
->curr_bcn_buf
);
2884 priv
->curr_bcn_buf
= kmalloc(curr_bss
->beacon_buf_size
,
2886 if (!priv
->curr_bcn_buf
)
2890 memcpy(priv
->curr_bcn_buf
, curr_bss
->beacon_buf
,
2891 curr_bss
->beacon_buf_size
);
2892 mwifiex_dbg(priv
->adapter
, INFO
,
2893 "info: current beacon saved %d\n",
2894 priv
->curr_bcn_size
);
2896 curr_bss
->beacon_buf
= priv
->curr_bcn_buf
;
2898 /* adjust the pointers in the current BSS descriptor */
2899 if (curr_bss
->bcn_wpa_ie
)
2900 curr_bss
->bcn_wpa_ie
=
2901 (struct ieee_types_vendor_specific
*)
2902 (curr_bss
->beacon_buf
+
2903 curr_bss
->wpa_offset
);
2905 if (curr_bss
->bcn_rsn_ie
)
2906 curr_bss
->bcn_rsn_ie
= (struct ieee_types_generic
*)
2907 (curr_bss
->beacon_buf
+
2908 curr_bss
->rsn_offset
);
2910 if (curr_bss
->bcn_ht_cap
)
2911 curr_bss
->bcn_ht_cap
= (struct ieee80211_ht_cap
*)
2912 (curr_bss
->beacon_buf
+
2913 curr_bss
->ht_cap_offset
);
2915 if (curr_bss
->bcn_ht_oper
)
2916 curr_bss
->bcn_ht_oper
= (struct ieee80211_ht_operation
*)
2917 (curr_bss
->beacon_buf
+
2918 curr_bss
->ht_info_offset
);
2920 if (curr_bss
->bcn_vht_cap
)
2921 curr_bss
->bcn_vht_cap
= (void *)(curr_bss
->beacon_buf
+
2922 curr_bss
->vht_cap_offset
);
2924 if (curr_bss
->bcn_vht_oper
)
2925 curr_bss
->bcn_vht_oper
= (void *)(curr_bss
->beacon_buf
+
2926 curr_bss
->vht_info_offset
);
2928 if (curr_bss
->bcn_bss_co_2040
)
2929 curr_bss
->bcn_bss_co_2040
=
2930 (curr_bss
->beacon_buf
+ curr_bss
->bss_co_2040_offset
);
2932 if (curr_bss
->bcn_ext_cap
)
2933 curr_bss
->bcn_ext_cap
= curr_bss
->beacon_buf
+
2934 curr_bss
->ext_cap_offset
;
2936 if (curr_bss
->oper_mode
)
2937 curr_bss
->oper_mode
= (void *)(curr_bss
->beacon_buf
+
2938 curr_bss
->oper_mode_offset
);
2942 * This function frees the current BSS descriptor beacon buffer.
2945 mwifiex_free_curr_bcn(struct mwifiex_private
*priv
)
2947 kfree(priv
->curr_bcn_buf
);
2948 priv
->curr_bcn_buf
= NULL
;