2 * Marvell Wireless LAN device driver: scan ioctl and command handling
4 * Copyright (C) 2011, 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
32 #define MWIFIEX_LIMIT_1_CHANNEL_PER_SCAN_CMD 15
33 #define MWIFIEX_LIMIT_2_CHANNELS_PER_SCAN_CMD 27
34 #define MWIFIEX_LIMIT_3_CHANNELS_PER_SCAN_CMD 35
36 /* Memory needed to store a max sized Channel List TLV for a firmware scan */
37 #define CHAN_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_header) \
38 + (MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN \
39 *sizeof(struct mwifiex_chan_scan_param_set)))
41 /* Memory needed to store supported rate */
42 #define RATE_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_rates_param_set) \
43 + HOSTCMD_SUPPORTED_RATES)
45 /* Memory needed to store a max number/size WildCard SSID TLV for a firmware
47 #define WILDCARD_SSID_TLV_MAX_SIZE \
48 (MWIFIEX_MAX_SSID_LIST_LENGTH * \
49 (sizeof(struct mwifiex_ie_types_wildcard_ssid_params) \
50 + IEEE80211_MAX_SSID_LEN))
52 /* Maximum memory needed for a mwifiex_scan_cmd_config with all TLVs at max */
53 #define MAX_SCAN_CFG_ALLOC (sizeof(struct mwifiex_scan_cmd_config) \
54 + sizeof(struct mwifiex_ie_types_num_probes) \
55 + sizeof(struct mwifiex_ie_types_htcap) \
58 + WILDCARD_SSID_TLV_MAX_SIZE)
61 union mwifiex_scan_cmd_config_tlv
{
62 /* Scan configuration (variable length) */
63 struct mwifiex_scan_cmd_config config
;
64 /* Max allocated block */
65 u8 config_alloc_buf
[MAX_SCAN_CFG_ALLOC
];
73 static u8 mwifiex_wpa_oui
[CIPHER_SUITE_MAX
][4] = {
74 { 0x00, 0x50, 0xf2, 0x02 }, /* TKIP */
75 { 0x00, 0x50, 0xf2, 0x04 }, /* AES */
77 static u8 mwifiex_rsn_oui
[CIPHER_SUITE_MAX
][4] = {
78 { 0x00, 0x0f, 0xac, 0x02 }, /* TKIP */
79 { 0x00, 0x0f, 0xac, 0x04 }, /* AES */
83 * This function parses a given IE for a given OUI.
85 * This is used to parse a WPA/RSN IE to find if it has
89 mwifiex_search_oui_in_ie(struct ie_body
*iebody
, u8
*oui
)
93 count
= iebody
->ptk_cnt
[0];
95 /* There could be multiple OUIs for PTK hence
97 2) Check all the OUIs for AES.
98 3) If one of them is AES then pass success. */
100 if (!memcmp(iebody
->ptk_body
, oui
, sizeof(iebody
->ptk_body
)))
101 return MWIFIEX_OUI_PRESENT
;
105 iebody
= (struct ie_body
*) ((u8
*) iebody
+
106 sizeof(iebody
->ptk_body
));
109 pr_debug("info: %s: OUI is not found in PTK\n", __func__
);
110 return MWIFIEX_OUI_NOT_PRESENT
;
114 * This function checks if a given OUI is present in a RSN IE.
116 * The function first checks if a RSN IE is present or not in the
117 * BSS descriptor. It tries to locate the OUI only if such an IE is
121 mwifiex_is_rsn_oui_present(struct mwifiex_bssdescriptor
*bss_desc
, u32 cipher
)
124 struct ie_body
*iebody
;
125 u8 ret
= MWIFIEX_OUI_NOT_PRESENT
;
127 if (((bss_desc
->bcn_rsn_ie
) && ((*(bss_desc
->bcn_rsn_ie
)).
128 ieee_hdr
.element_id
== WLAN_EID_RSN
))) {
129 iebody
= (struct ie_body
*)
130 (((u8
*) bss_desc
->bcn_rsn_ie
->data
) +
132 oui
= &mwifiex_rsn_oui
[cipher
][0];
133 ret
= mwifiex_search_oui_in_ie(iebody
, oui
);
141 * This function checks if a given OUI is present in a WPA IE.
143 * The function first checks if a WPA IE is present or not in the
144 * BSS descriptor. It tries to locate the OUI only if such an IE is
148 mwifiex_is_wpa_oui_present(struct mwifiex_bssdescriptor
*bss_desc
, u32 cipher
)
151 struct ie_body
*iebody
;
152 u8 ret
= MWIFIEX_OUI_NOT_PRESENT
;
154 if (((bss_desc
->bcn_wpa_ie
) &&
155 ((*(bss_desc
->bcn_wpa_ie
)).vend_hdr
.element_id
==
157 iebody
= (struct ie_body
*) bss_desc
->bcn_wpa_ie
->data
;
158 oui
= &mwifiex_wpa_oui
[cipher
][0];
159 ret
= mwifiex_search_oui_in_ie(iebody
, oui
);
167 * This function compares two SSIDs and checks if they match.
170 mwifiex_ssid_cmp(struct cfg80211_ssid
*ssid1
, struct cfg80211_ssid
*ssid2
)
172 if (!ssid1
|| !ssid2
|| (ssid1
->ssid_len
!= ssid2
->ssid_len
))
174 return memcmp(ssid1
->ssid
, ssid2
->ssid
, ssid1
->ssid_len
);
178 * This function checks if wapi is enabled in driver and scanned network is
179 * compatible with it.
182 mwifiex_is_bss_wapi(struct mwifiex_private
*priv
,
183 struct mwifiex_bssdescriptor
*bss_desc
)
185 if (priv
->sec_info
.wapi_enabled
&&
186 (bss_desc
->bcn_wapi_ie
&&
187 ((*(bss_desc
->bcn_wapi_ie
)).ieee_hdr
.element_id
==
188 WLAN_EID_BSS_AC_ACCESS_DELAY
))) {
195 * This function checks if driver is configured with no security mode and
196 * scanned network is compatible with it.
199 mwifiex_is_bss_no_sec(struct mwifiex_private
*priv
,
200 struct mwifiex_bssdescriptor
*bss_desc
)
202 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
203 !priv
->sec_info
.wpa2_enabled
&& ((!bss_desc
->bcn_wpa_ie
) ||
204 ((*(bss_desc
->bcn_wpa_ie
)).vend_hdr
.element_id
!=
206 ((!bss_desc
->bcn_rsn_ie
) ||
207 ((*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
!=
209 !priv
->sec_info
.encryption_mode
&& !bss_desc
->privacy
) {
216 * This function checks if static WEP is enabled in driver and scanned network
217 * is compatible with it.
220 mwifiex_is_bss_static_wep(struct mwifiex_private
*priv
,
221 struct mwifiex_bssdescriptor
*bss_desc
)
223 if (priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
224 !priv
->sec_info
.wpa2_enabled
&& bss_desc
->privacy
) {
231 * This function checks if wpa is enabled in driver and scanned network is
232 * compatible with it.
235 mwifiex_is_bss_wpa(struct mwifiex_private
*priv
,
236 struct mwifiex_bssdescriptor
*bss_desc
)
238 if (!priv
->sec_info
.wep_enabled
&& priv
->sec_info
.wpa_enabled
&&
239 !priv
->sec_info
.wpa2_enabled
&& ((bss_desc
->bcn_wpa_ie
) &&
240 ((*(bss_desc
->bcn_wpa_ie
)).vend_hdr
.element_id
== WLAN_EID_WPA
))
242 * Privacy bit may NOT be set in some APs like
243 * LinkSys WRT54G && bss_desc->privacy
246 dev_dbg(priv
->adapter
->dev
, "info: %s: WPA:"
247 " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s "
248 "EncMode=%#x privacy=%#x\n", __func__
,
249 (bss_desc
->bcn_wpa_ie
) ?
250 (*(bss_desc
->bcn_wpa_ie
)).
251 vend_hdr
.element_id
: 0,
252 (bss_desc
->bcn_rsn_ie
) ?
253 (*(bss_desc
->bcn_rsn_ie
)).
254 ieee_hdr
.element_id
: 0,
255 (priv
->sec_info
.wep_enabled
) ? "e" : "d",
256 (priv
->sec_info
.wpa_enabled
) ? "e" : "d",
257 (priv
->sec_info
.wpa2_enabled
) ? "e" : "d",
258 priv
->sec_info
.encryption_mode
,
266 * This function checks if wpa2 is enabled in driver and scanned network is
267 * compatible with it.
270 mwifiex_is_bss_wpa2(struct mwifiex_private
*priv
,
271 struct mwifiex_bssdescriptor
*bss_desc
)
273 if (!priv
->sec_info
.wep_enabled
&&
274 !priv
->sec_info
.wpa_enabled
&&
275 priv
->sec_info
.wpa2_enabled
&&
276 ((bss_desc
->bcn_rsn_ie
) &&
277 ((*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
== WLAN_EID_RSN
))) {
279 * Privacy bit may NOT be set in some APs like
280 * LinkSys WRT54G && bss_desc->privacy
282 dev_dbg(priv
->adapter
->dev
, "info: %s: WPA2: "
283 " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s "
284 "EncMode=%#x privacy=%#x\n", __func__
,
285 (bss_desc
->bcn_wpa_ie
) ?
286 (*(bss_desc
->bcn_wpa_ie
)).
287 vend_hdr
.element_id
: 0,
288 (bss_desc
->bcn_rsn_ie
) ?
289 (*(bss_desc
->bcn_rsn_ie
)).
290 ieee_hdr
.element_id
: 0,
291 (priv
->sec_info
.wep_enabled
) ? "e" : "d",
292 (priv
->sec_info
.wpa_enabled
) ? "e" : "d",
293 (priv
->sec_info
.wpa2_enabled
) ? "e" : "d",
294 priv
->sec_info
.encryption_mode
,
302 * This function checks if adhoc AES is enabled in driver and scanned network is
303 * compatible with it.
306 mwifiex_is_bss_adhoc_aes(struct mwifiex_private
*priv
,
307 struct mwifiex_bssdescriptor
*bss_desc
)
309 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
310 !priv
->sec_info
.wpa2_enabled
&&
311 ((!bss_desc
->bcn_wpa_ie
) ||
312 ((*(bss_desc
->bcn_wpa_ie
)).vend_hdr
.element_id
!= WLAN_EID_WPA
)) &&
313 ((!bss_desc
->bcn_rsn_ie
) ||
314 ((*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
!= WLAN_EID_RSN
)) &&
315 !priv
->sec_info
.encryption_mode
&& bss_desc
->privacy
) {
322 * This function checks if dynamic WEP is enabled in driver and scanned network
323 * is compatible with it.
326 mwifiex_is_bss_dynamic_wep(struct mwifiex_private
*priv
,
327 struct mwifiex_bssdescriptor
*bss_desc
)
329 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
330 !priv
->sec_info
.wpa2_enabled
&&
331 ((!bss_desc
->bcn_wpa_ie
) ||
332 ((*(bss_desc
->bcn_wpa_ie
)).vend_hdr
.element_id
!= WLAN_EID_WPA
)) &&
333 ((!bss_desc
->bcn_rsn_ie
) ||
334 ((*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
!= WLAN_EID_RSN
)) &&
335 priv
->sec_info
.encryption_mode
&& bss_desc
->privacy
) {
336 dev_dbg(priv
->adapter
->dev
, "info: %s: dynamic "
337 "WEP: wpa_ie=%#x wpa2_ie=%#x "
338 "EncMode=%#x privacy=%#x\n",
340 (bss_desc
->bcn_wpa_ie
) ?
341 (*(bss_desc
->bcn_wpa_ie
)).
342 vend_hdr
.element_id
: 0,
343 (bss_desc
->bcn_rsn_ie
) ?
344 (*(bss_desc
->bcn_rsn_ie
)).
345 ieee_hdr
.element_id
: 0,
346 priv
->sec_info
.encryption_mode
,
354 * This function checks if a scanned network is compatible with the driver
357 * WEP WPA WPA2 ad-hoc encrypt Network
358 * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible
359 * 0 0 0 0 NONE 0 0 0 yes No security
360 * 0 1 0 0 x 1x 1 x yes WPA (disable
362 * 0 0 1 0 x 1x x 1 yes WPA2 (disable
364 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
365 * 1 0 0 0 NONE 1 0 0 yes Static WEP
367 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
369 * Compatibility is not matched while roaming, except for mode.
372 mwifiex_is_network_compatible(struct mwifiex_private
*priv
,
373 struct mwifiex_bssdescriptor
*bss_desc
, u32 mode
)
375 struct mwifiex_adapter
*adapter
= priv
->adapter
;
377 bss_desc
->disable_11n
= false;
379 /* Don't check for compatibility if roaming */
380 if (priv
->media_connected
&&
381 (priv
->bss_mode
== NL80211_IFTYPE_STATION
) &&
382 (bss_desc
->bss_mode
== NL80211_IFTYPE_STATION
))
385 if (priv
->wps
.session_enable
) {
386 dev_dbg(adapter
->dev
,
387 "info: return success directly in WPS period\n");
391 if (mwifiex_is_bss_wapi(priv
, bss_desc
)) {
392 dev_dbg(adapter
->dev
, "info: return success for WAPI AP\n");
396 if (bss_desc
->bss_mode
== mode
) {
397 if (mwifiex_is_bss_no_sec(priv
, bss_desc
)) {
400 } else if (mwifiex_is_bss_static_wep(priv
, bss_desc
)) {
401 /* Static WEP enabled */
402 dev_dbg(adapter
->dev
, "info: Disable 11n in WEP mode.\n");
403 bss_desc
->disable_11n
= true;
405 } else if (mwifiex_is_bss_wpa(priv
, bss_desc
)) {
407 if (((priv
->adapter
->config_bands
& BAND_GN
||
408 priv
->adapter
->config_bands
& BAND_AN
) &&
409 bss_desc
->bcn_ht_cap
) &&
410 !mwifiex_is_wpa_oui_present(bss_desc
,
411 CIPHER_SUITE_CCMP
)) {
413 if (mwifiex_is_wpa_oui_present
414 (bss_desc
, CIPHER_SUITE_TKIP
)) {
415 dev_dbg(adapter
->dev
,
416 "info: Disable 11n if AES "
417 "is not supported by AP\n");
418 bss_desc
->disable_11n
= true;
424 } else if (mwifiex_is_bss_wpa2(priv
, bss_desc
)) {
426 if (((priv
->adapter
->config_bands
& BAND_GN
||
427 priv
->adapter
->config_bands
& BAND_AN
) &&
428 bss_desc
->bcn_ht_cap
) &&
429 !mwifiex_is_rsn_oui_present(bss_desc
,
430 CIPHER_SUITE_CCMP
)) {
432 if (mwifiex_is_rsn_oui_present
433 (bss_desc
, CIPHER_SUITE_TKIP
)) {
434 dev_dbg(adapter
->dev
,
435 "info: Disable 11n if AES "
436 "is not supported by AP\n");
437 bss_desc
->disable_11n
= true;
443 } else if (mwifiex_is_bss_adhoc_aes(priv
, bss_desc
)) {
444 /* Ad-hoc AES enabled */
446 } else if (mwifiex_is_bss_dynamic_wep(priv
, bss_desc
)) {
447 /* Dynamic WEP enabled */
451 /* Security doesn't match */
452 dev_dbg(adapter
->dev
,
453 "info: %s: failed: wpa_ie=%#x wpa2_ie=%#x WEP=%s "
454 "WPA=%s WPA2=%s EncMode=%#x privacy=%#x\n", __func__
,
455 (bss_desc
->bcn_wpa_ie
) ?
456 (*(bss_desc
->bcn_wpa_ie
)).vend_hdr
.element_id
: 0,
457 (bss_desc
->bcn_rsn_ie
) ?
458 (*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
: 0,
459 (priv
->sec_info
.wep_enabled
) ? "e" : "d",
460 (priv
->sec_info
.wpa_enabled
) ? "e" : "d",
461 (priv
->sec_info
.wpa2_enabled
) ? "e" : "d",
462 priv
->sec_info
.encryption_mode
, bss_desc
->privacy
);
466 /* Mode doesn't match */
471 * This function creates a channel list for the driver to scan, based
472 * on region/band information.
474 * This routine is used for any scan that is not provided with a
475 * specific channel list to scan.
478 mwifiex_scan_create_channel_list(struct mwifiex_private
*priv
,
479 const struct mwifiex_user_scan_cfg
481 struct mwifiex_chan_scan_param_set
485 enum ieee80211_band band
;
486 struct ieee80211_supported_band
*sband
;
487 struct ieee80211_channel
*ch
;
488 struct mwifiex_adapter
*adapter
= priv
->adapter
;
491 for (band
= 0; (band
< IEEE80211_NUM_BANDS
) ; band
++) {
493 if (!priv
->wdev
->wiphy
->bands
[band
])
496 sband
= priv
->wdev
->wiphy
->bands
[band
];
498 for (i
= 0; (i
< sband
->n_channels
) ; i
++) {
499 ch
= &sband
->channels
[i
];
500 if (ch
->flags
& IEEE80211_CHAN_DISABLED
)
502 scan_chan_list
[chan_idx
].radio_type
= band
;
505 user_scan_in
->chan_list
[0].scan_time
)
506 scan_chan_list
[chan_idx
].max_scan_time
=
507 cpu_to_le16((u16
) user_scan_in
->
508 chan_list
[0].scan_time
);
509 else if (ch
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
510 scan_chan_list
[chan_idx
].max_scan_time
=
511 cpu_to_le16(adapter
->passive_scan_time
);
513 scan_chan_list
[chan_idx
].max_scan_time
=
514 cpu_to_le16(adapter
->active_scan_time
);
516 if (ch
->flags
& IEEE80211_CHAN_PASSIVE_SCAN
)
517 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
518 |= MWIFIEX_PASSIVE_SCAN
;
520 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
521 &= ~MWIFIEX_PASSIVE_SCAN
;
522 scan_chan_list
[chan_idx
].chan_number
=
525 scan_chan_list
[chan_idx
].max_scan_time
=
526 cpu_to_le16(adapter
->specific_scan_time
);
527 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
528 |= MWIFIEX_DISABLE_CHAN_FILT
;
538 * This function constructs and sends multiple scan config commands to
541 * Previous routines in the code flow have created a scan command configuration
542 * with any requested TLVs. This function splits the channel TLV into maximum
543 * channels supported per scan lists and sends the portion of the channel TLV,
544 * along with the other TLVs, to the firmware.
547 mwifiex_scan_channel_list(struct mwifiex_private
*priv
,
548 u32 max_chan_per_scan
, u8 filtered_scan
,
549 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
550 struct mwifiex_ie_types_chan_list_param_set
552 struct mwifiex_chan_scan_param_set
*scan_chan_list
)
555 struct mwifiex_chan_scan_param_set
*tmp_chan_list
;
556 struct mwifiex_chan_scan_param_set
*start_chan
;
562 if (!scan_cfg_out
|| !chan_tlv_out
|| !scan_chan_list
) {
563 dev_dbg(priv
->adapter
->dev
,
564 "info: Scan: Null detect: %p, %p, %p\n",
565 scan_cfg_out
, chan_tlv_out
, scan_chan_list
);
569 chan_tlv_out
->header
.type
= cpu_to_le16(TLV_TYPE_CHANLIST
);
571 /* Set the temp channel struct pointer to the start of the desired
573 tmp_chan_list
= scan_chan_list
;
575 /* Loop through the desired channel list, sending a new firmware scan
576 commands for each max_chan_per_scan channels (or for 1,6,11
577 individually if configured accordingly) */
578 while (tmp_chan_list
->chan_number
) {
582 chan_tlv_out
->header
.len
= 0;
583 start_chan
= tmp_chan_list
;
587 * Construct the Channel TLV for the scan command. Continue to
588 * insert channel TLVs until:
589 * - the tlv_idx hits the maximum configured per scan command
590 * - the next channel to insert is 0 (end of desired channel
592 * - done_early is set (controlling individual scanning of
595 while (tlv_idx
< max_chan_per_scan
&&
596 tmp_chan_list
->chan_number
&& !done_early
) {
598 dev_dbg(priv
->adapter
->dev
,
599 "info: Scan: Chan(%3d), Radio(%d),"
600 " Mode(%d, %d), Dur(%d)\n",
601 tmp_chan_list
->chan_number
,
602 tmp_chan_list
->radio_type
,
603 tmp_chan_list
->chan_scan_mode_bitmap
604 & MWIFIEX_PASSIVE_SCAN
,
605 (tmp_chan_list
->chan_scan_mode_bitmap
606 & MWIFIEX_DISABLE_CHAN_FILT
) >> 1,
607 le16_to_cpu(tmp_chan_list
->max_scan_time
));
609 /* Copy the current channel TLV to the command being
611 memcpy(chan_tlv_out
->chan_scan_param
+ tlv_idx
,
613 sizeof(chan_tlv_out
->chan_scan_param
));
615 /* Increment the TLV header length by the size
617 chan_tlv_out
->header
.len
=
618 cpu_to_le16(le16_to_cpu(chan_tlv_out
->header
.len
) +
619 (sizeof(chan_tlv_out
->chan_scan_param
)));
622 * The tlv buffer length is set to the number of bytes
623 * of the between the channel tlv pointer and the start
624 * of the tlv buffer. This compensates for any TLVs
625 * that were appended before the channel list.
627 scan_cfg_out
->tlv_buf_len
= (u32
) ((u8
*) chan_tlv_out
-
628 scan_cfg_out
->tlv_buf
);
630 /* Add the size of the channel tlv header and the data
632 scan_cfg_out
->tlv_buf_len
+=
633 (sizeof(chan_tlv_out
->header
)
634 + le16_to_cpu(chan_tlv_out
->header
.len
));
636 /* Increment the index to the channel tlv we are
640 /* Count the total scan time per command */
642 le16_to_cpu(tmp_chan_list
->max_scan_time
);
646 /* Stop the loop if the *current* channel is in the
647 1,6,11 set and we are not filtering on a BSSID
649 if (!filtered_scan
&&
650 (tmp_chan_list
->chan_number
== 1 ||
651 tmp_chan_list
->chan_number
== 6 ||
652 tmp_chan_list
->chan_number
== 11))
655 /* Increment the tmp pointer to the next channel to
659 /* Stop the loop if the *next* channel is in the 1,6,11
660 set. This will cause it to be the only channel
661 scanned on the next interation */
662 if (!filtered_scan
&&
663 (tmp_chan_list
->chan_number
== 1 ||
664 tmp_chan_list
->chan_number
== 6 ||
665 tmp_chan_list
->chan_number
== 11))
669 /* The total scan time should be less than scan command timeout
671 if (total_scan_time
> MWIFIEX_MAX_TOTAL_SCAN_TIME
) {
672 dev_err(priv
->adapter
->dev
, "total scan time %dms"
673 " is over limit (%dms), scan skipped\n",
674 total_scan_time
, MWIFIEX_MAX_TOTAL_SCAN_TIME
);
679 priv
->adapter
->scan_channels
= start_chan
;
681 /* Send the scan command to the firmware with the specified
683 ret
= mwifiex_send_cmd_async(priv
, HostCmd_CMD_802_11_SCAN
,
684 HostCmd_ACT_GEN_SET
, 0,
697 * This function constructs a scan command configuration structure to use
700 * Application layer or other functions can invoke network scanning
701 * with a scan configuration supplied in a user scan configuration structure.
702 * This structure is used as the basis of one or many scan command configuration
703 * commands that are sent to the command processing module and eventually to the
706 * This function creates a scan command configuration structure based on the
707 * following user supplied parameters (if present):
710 * - Number of Probes to be sent
713 * If the SSID or BSSID filter is not present, the filter is disabled/cleared.
714 * If the number of probes is not set, adapter default setting is used.
717 mwifiex_config_scan(struct mwifiex_private
*priv
,
718 const struct mwifiex_user_scan_cfg
*user_scan_in
,
719 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
720 struct mwifiex_ie_types_chan_list_param_set
**chan_list_out
,
721 struct mwifiex_chan_scan_param_set
*scan_chan_list
,
722 u8
*max_chan_per_scan
, u8
*filtered_scan
,
723 u8
*scan_current_only
)
725 struct mwifiex_adapter
*adapter
= priv
->adapter
;
726 struct mwifiex_ie_types_num_probes
*num_probes_tlv
;
727 struct mwifiex_ie_types_wildcard_ssid_params
*wildcard_ssid_tlv
;
728 struct mwifiex_ie_types_rates_param_set
*rates_tlv
;
729 const u8 zero_mac
[ETH_ALEN
] = { 0, 0, 0, 0, 0, 0 };
741 u8 rates
[MWIFIEX_SUPPORTED_RATES
];
743 struct mwifiex_ie_types_htcap
*ht_cap
;
745 /* The tlv_buf_len is calculated for each scan command. The TLVs added
746 in this routine will be preserved since the routine that sends the
747 command will append channelTLVs at *chan_list_out. The difference
748 between the *chan_list_out and the tlv_buf start will be used to
749 calculate the size of anything we add in this routine. */
750 scan_cfg_out
->tlv_buf_len
= 0;
752 /* Running tlv pointer. Assigned to chan_list_out at end of function
753 so later routines know where channels can be added to the command
755 tlv_pos
= scan_cfg_out
->tlv_buf
;
757 /* Initialize the scan as un-filtered; the flag is later set to TRUE
758 below if a SSID or BSSID filter is sent in the command */
759 *filtered_scan
= false;
761 /* Initialize the scan as not being only on the current channel. If
762 the channel list is customized, only contains one channel, and is
763 the active channel, this is set true and data flow is not halted. */
764 *scan_current_only
= false;
768 /* Default the ssid_filter flag to TRUE, set false under
769 certain wildcard conditions and qualified by the existence
770 of an SSID list before marking the scan as filtered */
773 /* Set the BSS type scan filter, use Adapter setting if
775 scan_cfg_out
->bss_mode
=
776 (user_scan_in
->bss_mode
? (u8
) user_scan_in
->
777 bss_mode
: (u8
) adapter
->scan_mode
);
779 /* Set the number of probes to send, use Adapter setting
782 (user_scan_in
->num_probes
? user_scan_in
->
783 num_probes
: adapter
->scan_probes
);
786 * Set the BSSID filter to the incoming configuration,
787 * if non-zero. If not set, it will remain disabled
790 memcpy(scan_cfg_out
->specific_bssid
,
791 user_scan_in
->specific_bssid
,
792 sizeof(scan_cfg_out
->specific_bssid
));
794 for (i
= 0; i
< user_scan_in
->num_ssids
; i
++) {
795 ssid_len
= user_scan_in
->ssid_list
[i
].ssid_len
;
798 (struct mwifiex_ie_types_wildcard_ssid_params
*)
800 wildcard_ssid_tlv
->header
.type
=
801 cpu_to_le16(TLV_TYPE_WILDCARDSSID
);
802 wildcard_ssid_tlv
->header
.len
= cpu_to_le16(
803 (u16
) (ssid_len
+ sizeof(wildcard_ssid_tlv
->
807 * max_ssid_length = 0 tells firmware to perform
808 * specific scan for the SSID filled, whereas
809 * max_ssid_length = IEEE80211_MAX_SSID_LEN is for
813 wildcard_ssid_tlv
->max_ssid_length
= 0;
815 wildcard_ssid_tlv
->max_ssid_length
=
816 IEEE80211_MAX_SSID_LEN
;
818 memcpy(wildcard_ssid_tlv
->ssid
,
819 user_scan_in
->ssid_list
[i
].ssid
, ssid_len
);
821 tlv_pos
+= (sizeof(wildcard_ssid_tlv
->header
)
822 + le16_to_cpu(wildcard_ssid_tlv
->header
.len
));
824 dev_dbg(adapter
->dev
, "info: scan: ssid[%d]: %s, %d\n",
825 i
, wildcard_ssid_tlv
->ssid
,
826 wildcard_ssid_tlv
->max_ssid_length
);
828 /* Empty wildcard ssid with a maxlen will match many or
829 potentially all SSIDs (maxlen == 32), therefore do
830 not treat the scan as
832 if (!ssid_len
&& wildcard_ssid_tlv
->max_ssid_length
)
837 * The default number of channels sent in the command is low to
838 * ensure the response buffer from the firmware does not
839 * truncate scan results. That is not an issue with an SSID
840 * or BSSID filter applied to the scan results in the firmware.
842 if ((i
&& ssid_filter
) ||
843 memcmp(scan_cfg_out
->specific_bssid
, &zero_mac
,
845 *filtered_scan
= true;
847 scan_cfg_out
->bss_mode
= (u8
) adapter
->scan_mode
;
848 num_probes
= adapter
->scan_probes
;
852 * If a specific BSSID or SSID is used, the number of channels in the
853 * scan command will be increased to the absolute maximum.
856 *max_chan_per_scan
= MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN
;
858 *max_chan_per_scan
= MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD
;
860 /* If the input config or adapter has the number of Probes set,
864 dev_dbg(adapter
->dev
, "info: scan: num_probes = %d\n",
867 num_probes_tlv
= (struct mwifiex_ie_types_num_probes
*) tlv_pos
;
868 num_probes_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_NUMPROBES
);
869 num_probes_tlv
->header
.len
=
870 cpu_to_le16(sizeof(num_probes_tlv
->num_probes
));
871 num_probes_tlv
->num_probes
= cpu_to_le16((u16
) num_probes
);
873 tlv_pos
+= sizeof(num_probes_tlv
->header
) +
874 le16_to_cpu(num_probes_tlv
->header
.len
);
878 /* Append rates tlv */
879 memset(rates
, 0, sizeof(rates
));
881 rates_size
= mwifiex_get_supported_rates(priv
, rates
);
883 rates_tlv
= (struct mwifiex_ie_types_rates_param_set
*) tlv_pos
;
884 rates_tlv
->header
.type
= cpu_to_le16(WLAN_EID_SUPP_RATES
);
885 rates_tlv
->header
.len
= cpu_to_le16((u16
) rates_size
);
886 memcpy(rates_tlv
->rates
, rates
, rates_size
);
887 tlv_pos
+= sizeof(rates_tlv
->header
) + rates_size
;
889 dev_dbg(adapter
->dev
, "info: SCAN_CMD: Rates size = %d\n", rates_size
);
891 if (ISSUPP_11NENABLED(priv
->adapter
->fw_cap_info
) &&
892 (priv
->adapter
->config_bands
& BAND_GN
||
893 priv
->adapter
->config_bands
& BAND_AN
)) {
894 ht_cap
= (struct mwifiex_ie_types_htcap
*) tlv_pos
;
895 memset(ht_cap
, 0, sizeof(struct mwifiex_ie_types_htcap
));
896 ht_cap
->header
.type
= cpu_to_le16(WLAN_EID_HT_CAPABILITY
);
898 cpu_to_le16(sizeof(struct ieee80211_ht_cap
));
900 mwifiex_band_to_radio_type(priv
->adapter
->config_bands
);
901 mwifiex_fill_cap_info(priv
, radio_type
, ht_cap
);
902 tlv_pos
+= sizeof(struct mwifiex_ie_types_htcap
);
905 /* Append vendor specific IE TLV */
906 mwifiex_cmd_append_vsie_tlv(priv
, MWIFIEX_VSIE_MASK_SCAN
, &tlv_pos
);
909 * Set the output for the channel TLV to the address in the tlv buffer
910 * past any TLVs that were added in this function (SSID, num_probes).
911 * Channel TLVs will be added past this for each scan command,
912 * preserving the TLVs that were previously added.
915 (struct mwifiex_ie_types_chan_list_param_set
*) tlv_pos
;
917 if (user_scan_in
&& user_scan_in
->chan_list
[0].chan_number
) {
919 dev_dbg(adapter
->dev
, "info: Scan: Using supplied channel list\n");
922 chan_idx
< MWIFIEX_USER_SCAN_CHAN_MAX
&&
923 user_scan_in
->chan_list
[chan_idx
].chan_number
;
926 channel
= user_scan_in
->chan_list
[chan_idx
].chan_number
;
927 (scan_chan_list
+ chan_idx
)->chan_number
= channel
;
930 user_scan_in
->chan_list
[chan_idx
].radio_type
;
931 (scan_chan_list
+ chan_idx
)->radio_type
= radio_type
;
933 scan_type
= user_scan_in
->chan_list
[chan_idx
].scan_type
;
935 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
937 chan_idx
)->chan_scan_mode_bitmap
938 |= MWIFIEX_PASSIVE_SCAN
;
941 chan_idx
)->chan_scan_mode_bitmap
942 &= ~MWIFIEX_PASSIVE_SCAN
;
944 if (user_scan_in
->chan_list
[chan_idx
].scan_time
) {
945 scan_dur
= (u16
) user_scan_in
->
946 chan_list
[chan_idx
].scan_time
;
948 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
949 scan_dur
= adapter
->passive_scan_time
;
950 else if (*filtered_scan
)
951 scan_dur
= adapter
->specific_scan_time
;
953 scan_dur
= adapter
->active_scan_time
;
956 (scan_chan_list
+ chan_idx
)->min_scan_time
=
957 cpu_to_le16(scan_dur
);
958 (scan_chan_list
+ chan_idx
)->max_scan_time
=
959 cpu_to_le16(scan_dur
);
962 /* Check if we are only scanning the current channel */
963 if ((chan_idx
== 1) &&
964 (user_scan_in
->chan_list
[0].chan_number
==
965 priv
->curr_bss_params
.bss_descriptor
.channel
)) {
966 *scan_current_only
= true;
967 dev_dbg(adapter
->dev
,
968 "info: Scan: Scanning current channel only\n");
972 dev_dbg(adapter
->dev
,
973 "info: Scan: Creating full region channel list\n");
974 chan_num
= mwifiex_scan_create_channel_list(priv
, user_scan_in
,
980 * In associated state we will reduce the number of channels scanned per
981 * scan command to avoid any traffic delay/loss. This number is decided
982 * based on total number of channels to be scanned due to constraints
983 * of command buffers.
985 if (priv
->media_connected
) {
986 if (chan_num
< MWIFIEX_LIMIT_1_CHANNEL_PER_SCAN_CMD
)
987 *max_chan_per_scan
= 1;
988 else if (chan_num
< MWIFIEX_LIMIT_2_CHANNELS_PER_SCAN_CMD
)
989 *max_chan_per_scan
= 2;
990 else if (chan_num
< MWIFIEX_LIMIT_3_CHANNELS_PER_SCAN_CMD
)
991 *max_chan_per_scan
= 3;
996 * This function inspects the scan response buffer for pointers to
999 * TLVs can be included at the end of the scan response BSS information.
1001 * Data in the buffer is parsed pointers to TLVs that can potentially
1002 * be passed back in the response.
1005 mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter
*adapter
,
1006 struct mwifiex_ie_types_data
*tlv
,
1007 u32 tlv_buf_size
, u32 req_tlv_type
,
1008 struct mwifiex_ie_types_data
**tlv_data
)
1010 struct mwifiex_ie_types_data
*current_tlv
;
1016 tlv_buf_left
= tlv_buf_size
;
1019 dev_dbg(adapter
->dev
, "info: SCAN_RESP: tlv_buf_size = %d\n",
1022 while (tlv_buf_left
>= sizeof(struct mwifiex_ie_types_header
)) {
1024 tlv_type
= le16_to_cpu(current_tlv
->header
.type
);
1025 tlv_len
= le16_to_cpu(current_tlv
->header
.len
);
1027 if (sizeof(tlv
->header
) + tlv_len
> tlv_buf_left
) {
1028 dev_err(adapter
->dev
, "SCAN_RESP: TLV buffer corrupt\n");
1032 if (req_tlv_type
== tlv_type
) {
1034 case TLV_TYPE_TSFTIMESTAMP
:
1035 dev_dbg(adapter
->dev
, "info: SCAN_RESP: TSF "
1036 "timestamp TLV, len = %d\n", tlv_len
);
1037 *tlv_data
= (struct mwifiex_ie_types_data
*)
1040 case TLV_TYPE_CHANNELBANDLIST
:
1041 dev_dbg(adapter
->dev
, "info: SCAN_RESP: channel"
1042 " band list TLV, len = %d\n", tlv_len
);
1043 *tlv_data
= (struct mwifiex_ie_types_data
*)
1047 dev_err(adapter
->dev
,
1048 "SCAN_RESP: unhandled TLV = %d\n",
1050 /* Give up, this seems corrupted */
1059 tlv_buf_left
-= (sizeof(tlv
->header
) + tlv_len
);
1061 (struct mwifiex_ie_types_data
*) (current_tlv
->data
+
1068 * This function parses provided beacon buffer and updates
1069 * respective fields in bss descriptor structure.
1071 int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter
*adapter
,
1072 struct mwifiex_bssdescriptor
*bss_entry
)
1076 struct ieee_types_fh_param_set
*fh_param_set
;
1077 struct ieee_types_ds_param_set
*ds_param_set
;
1078 struct ieee_types_cf_param_set
*cf_param_set
;
1079 struct ieee_types_ibss_param_set
*ibss_param_set
;
1086 u8 found_data_rate_ie
;
1088 struct ieee_types_vendor_specific
*vendor_ie
;
1089 const u8 wpa_oui
[4] = { 0x00, 0x50, 0xf2, 0x01 };
1090 const u8 wmm_oui
[4] = { 0x00, 0x50, 0xf2, 0x02 };
1092 found_data_rate_ie
= false;
1094 current_ptr
= bss_entry
->beacon_buf
;
1095 bytes_left
= bss_entry
->beacon_buf_size
;
1097 /* Process variable IE */
1098 while (bytes_left
>= 2) {
1099 element_id
= *current_ptr
;
1100 element_len
= *(current_ptr
+ 1);
1101 total_ie_len
= element_len
+ sizeof(struct ieee_types_header
);
1103 if (bytes_left
< total_ie_len
) {
1104 dev_err(adapter
->dev
, "err: InterpretIE: in processing"
1105 " IE, bytes left < IE length\n");
1108 switch (element_id
) {
1110 bss_entry
->ssid
.ssid_len
= element_len
;
1111 memcpy(bss_entry
->ssid
.ssid
, (current_ptr
+ 2),
1113 dev_dbg(adapter
->dev
,
1114 "info: InterpretIE: ssid: %-32s\n",
1115 bss_entry
->ssid
.ssid
);
1118 case WLAN_EID_SUPP_RATES
:
1119 memcpy(bss_entry
->data_rates
, current_ptr
+ 2,
1121 memcpy(bss_entry
->supported_rates
, current_ptr
+ 2,
1123 rate_size
= element_len
;
1124 found_data_rate_ie
= true;
1127 case WLAN_EID_FH_PARAMS
:
1129 (struct ieee_types_fh_param_set
*) current_ptr
;
1130 memcpy(&bss_entry
->phy_param_set
.fh_param_set
,
1132 sizeof(struct ieee_types_fh_param_set
));
1135 case WLAN_EID_DS_PARAMS
:
1137 (struct ieee_types_ds_param_set
*) current_ptr
;
1139 bss_entry
->channel
= ds_param_set
->current_chan
;
1141 memcpy(&bss_entry
->phy_param_set
.ds_param_set
,
1143 sizeof(struct ieee_types_ds_param_set
));
1146 case WLAN_EID_CF_PARAMS
:
1148 (struct ieee_types_cf_param_set
*) current_ptr
;
1149 memcpy(&bss_entry
->ss_param_set
.cf_param_set
,
1151 sizeof(struct ieee_types_cf_param_set
));
1154 case WLAN_EID_IBSS_PARAMS
:
1156 (struct ieee_types_ibss_param_set
*)
1158 memcpy(&bss_entry
->ss_param_set
.ibss_param_set
,
1160 sizeof(struct ieee_types_ibss_param_set
));
1163 case WLAN_EID_ERP_INFO
:
1164 bss_entry
->erp_flags
= *(current_ptr
+ 2);
1167 case WLAN_EID_EXT_SUPP_RATES
:
1169 * Only process extended supported rate
1170 * if data rate is already found.
1171 * Data rate IE should come before
1172 * extended supported rate IE
1174 if (found_data_rate_ie
) {
1175 if ((element_len
+ rate_size
) >
1176 MWIFIEX_SUPPORTED_RATES
)
1178 (MWIFIEX_SUPPORTED_RATES
-
1181 bytes_to_copy
= element_len
;
1183 rate
= (u8
*) bss_entry
->data_rates
;
1185 memcpy(rate
, current_ptr
+ 2, bytes_to_copy
);
1187 rate
= (u8
*) bss_entry
->supported_rates
;
1189 memcpy(rate
, current_ptr
+ 2, bytes_to_copy
);
1193 case WLAN_EID_VENDOR_SPECIFIC
:
1194 vendor_ie
= (struct ieee_types_vendor_specific
*)
1198 (vendor_ie
->vend_hdr
.oui
, wpa_oui
,
1200 bss_entry
->bcn_wpa_ie
=
1201 (struct ieee_types_vendor_specific
*)
1203 bss_entry
->wpa_offset
= (u16
)
1204 (current_ptr
- bss_entry
->beacon_buf
);
1205 } else if (!memcmp(vendor_ie
->vend_hdr
.oui
, wmm_oui
,
1208 sizeof(struct ieee_types_wmm_parameter
) ||
1210 sizeof(struct ieee_types_wmm_info
))
1212 * Only accept and copy the WMM IE if
1213 * it matches the size expected for the
1214 * WMM Info IE or the WMM Parameter IE.
1216 memcpy((u8
*) &bss_entry
->wmm_ie
,
1217 current_ptr
, total_ie_len
);
1221 bss_entry
->bcn_rsn_ie
=
1222 (struct ieee_types_generic
*) current_ptr
;
1223 bss_entry
->rsn_offset
= (u16
) (current_ptr
-
1224 bss_entry
->beacon_buf
);
1226 case WLAN_EID_BSS_AC_ACCESS_DELAY
:
1227 bss_entry
->bcn_wapi_ie
=
1228 (struct ieee_types_generic
*) current_ptr
;
1229 bss_entry
->wapi_offset
= (u16
) (current_ptr
-
1230 bss_entry
->beacon_buf
);
1232 case WLAN_EID_HT_CAPABILITY
:
1233 bss_entry
->bcn_ht_cap
= (struct ieee80211_ht_cap
*)
1235 sizeof(struct ieee_types_header
));
1236 bss_entry
->ht_cap_offset
= (u16
) (current_ptr
+
1237 sizeof(struct ieee_types_header
) -
1238 bss_entry
->beacon_buf
);
1240 case WLAN_EID_HT_OPERATION
:
1241 bss_entry
->bcn_ht_oper
=
1242 (struct ieee80211_ht_operation
*)(current_ptr
+
1243 sizeof(struct ieee_types_header
));
1244 bss_entry
->ht_info_offset
= (u16
) (current_ptr
+
1245 sizeof(struct ieee_types_header
) -
1246 bss_entry
->beacon_buf
);
1248 case WLAN_EID_BSS_COEX_2040
:
1249 bss_entry
->bcn_bss_co_2040
= (u8
*) (current_ptr
+
1250 sizeof(struct ieee_types_header
));
1251 bss_entry
->bss_co_2040_offset
= (u16
) (current_ptr
+
1252 sizeof(struct ieee_types_header
) -
1253 bss_entry
->beacon_buf
);
1255 case WLAN_EID_EXT_CAPABILITY
:
1256 bss_entry
->bcn_ext_cap
= (u8
*) (current_ptr
+
1257 sizeof(struct ieee_types_header
));
1258 bss_entry
->ext_cap_offset
= (u16
) (current_ptr
+
1259 sizeof(struct ieee_types_header
) -
1260 bss_entry
->beacon_buf
);
1266 current_ptr
+= element_len
+ 2;
1268 /* Need to account for IE ID and IE Len */
1269 bytes_left
-= (element_len
+ 2);
1271 } /* while (bytes_left > 2) */
1276 * This function converts radio type scan parameter to a band configuration
1277 * to be used in join command.
1280 mwifiex_radio_type_to_band(u8 radio_type
)
1282 switch (radio_type
) {
1283 case HostCmd_SCAN_RADIO_TYPE_A
:
1285 case HostCmd_SCAN_RADIO_TYPE_BG
:
1292 * This is an internal function used to start a scan based on an input
1295 * This uses the input user scan configuration information when provided in
1296 * order to send the appropriate scan commands to firmware to populate or
1297 * update the internal driver scan table.
1299 int mwifiex_scan_networks(struct mwifiex_private
*priv
,
1300 const struct mwifiex_user_scan_cfg
*user_scan_in
)
1303 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1304 struct cmd_ctrl_node
*cmd_node
;
1305 union mwifiex_scan_cmd_config_tlv
*scan_cfg_out
;
1306 struct mwifiex_ie_types_chan_list_param_set
*chan_list_out
;
1308 struct mwifiex_chan_scan_param_set
*scan_chan_list
;
1310 u8 scan_current_chan_only
;
1311 u8 max_chan_per_scan
;
1312 unsigned long flags
;
1314 if (adapter
->scan_processing
) {
1315 dev_dbg(adapter
->dev
, "cmd: Scan already in process...\n");
1319 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1320 adapter
->scan_processing
= true;
1321 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1323 if (priv
->scan_block
) {
1324 dev_dbg(adapter
->dev
,
1325 "cmd: Scan is blocked during association...\n");
1329 scan_cfg_out
= kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv
),
1331 if (!scan_cfg_out
) {
1332 dev_err(adapter
->dev
, "failed to alloc scan_cfg_out\n");
1336 buf_size
= sizeof(struct mwifiex_chan_scan_param_set
) *
1337 MWIFIEX_USER_SCAN_CHAN_MAX
;
1338 scan_chan_list
= kzalloc(buf_size
, GFP_KERNEL
);
1339 if (!scan_chan_list
) {
1340 dev_err(adapter
->dev
, "failed to alloc scan_chan_list\n");
1341 kfree(scan_cfg_out
);
1345 mwifiex_config_scan(priv
, user_scan_in
, &scan_cfg_out
->config
,
1346 &chan_list_out
, scan_chan_list
, &max_chan_per_scan
,
1347 &filtered_scan
, &scan_current_chan_only
);
1349 ret
= mwifiex_scan_channel_list(priv
, max_chan_per_scan
, filtered_scan
,
1350 &scan_cfg_out
->config
, chan_list_out
,
1353 /* Get scan command from scan_pending_q and put to cmd_pending_q */
1355 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1356 if (!list_empty(&adapter
->scan_pending_q
)) {
1357 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
1358 struct cmd_ctrl_node
, list
);
1359 list_del(&cmd_node
->list
);
1360 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1362 adapter
->cmd_queued
= cmd_node
;
1363 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
1365 queue_work(adapter
->workqueue
, &adapter
->main_work
);
1367 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1371 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1372 adapter
->scan_processing
= true;
1373 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1376 kfree(scan_cfg_out
);
1377 kfree(scan_chan_list
);
1382 * This function prepares a scan command to be sent to the firmware.
1384 * This uses the scan command configuration sent to the command processing
1385 * module in command preparation stage to configure a scan command structure
1386 * to send to firmware.
1388 * The fixed fields specifying the BSS type and BSSID filters as well as a
1389 * variable number/length of TLVs are sent in the command to firmware.
1391 * Preparation also includes -
1392 * - Setting command ID, and proper size
1393 * - Ensuring correct endian-ness
1395 int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command
*cmd
,
1396 struct mwifiex_scan_cmd_config
*scan_cfg
)
1398 struct host_cmd_ds_802_11_scan
*scan_cmd
= &cmd
->params
.scan
;
1400 /* Set fixed field variables in scan command */
1401 scan_cmd
->bss_mode
= scan_cfg
->bss_mode
;
1402 memcpy(scan_cmd
->bssid
, scan_cfg
->specific_bssid
,
1403 sizeof(scan_cmd
->bssid
));
1404 memcpy(scan_cmd
->tlv_buffer
, scan_cfg
->tlv_buf
, scan_cfg
->tlv_buf_len
);
1406 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_SCAN
);
1408 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
1409 cmd
->size
= cpu_to_le16((u16
) (sizeof(scan_cmd
->bss_mode
)
1410 + sizeof(scan_cmd
->bssid
)
1411 + scan_cfg
->tlv_buf_len
+ S_DS_GEN
));
1417 * This function checks compatibility of requested network with current
1420 int mwifiex_check_network_compatibility(struct mwifiex_private
*priv
,
1421 struct mwifiex_bssdescriptor
*bss_desc
)
1428 if ((mwifiex_get_cfp(priv
, (u8
) bss_desc
->bss_band
,
1429 (u16
) bss_desc
->channel
, 0))) {
1430 switch (priv
->bss_mode
) {
1431 case NL80211_IFTYPE_STATION
:
1432 case NL80211_IFTYPE_ADHOC
:
1433 ret
= mwifiex_is_network_compatible(priv
, bss_desc
,
1436 dev_err(priv
->adapter
->dev
, "cannot find ssid "
1437 "%s\n", bss_desc
->ssid
.ssid
);
1447 static int mwifiex_update_curr_bss_params(struct mwifiex_private
*priv
,
1448 struct cfg80211_bss
*bss
)
1450 struct mwifiex_bssdescriptor
*bss_desc
;
1452 unsigned long flags
;
1454 /* Allocate and fill new bss descriptor */
1455 bss_desc
= kzalloc(sizeof(struct mwifiex_bssdescriptor
),
1458 dev_err(priv
->adapter
->dev
, " failed to alloc bss_desc\n");
1462 ret
= mwifiex_fill_new_bss_desc(priv
, bss
, bss_desc
);
1466 ret
= mwifiex_check_network_compatibility(priv
, bss_desc
);
1470 /* Update current bss descriptor parameters */
1471 spin_lock_irqsave(&priv
->curr_bcn_buf_lock
, flags
);
1472 priv
->curr_bss_params
.bss_descriptor
.bcn_wpa_ie
= NULL
;
1473 priv
->curr_bss_params
.bss_descriptor
.wpa_offset
= 0;
1474 priv
->curr_bss_params
.bss_descriptor
.bcn_rsn_ie
= NULL
;
1475 priv
->curr_bss_params
.bss_descriptor
.rsn_offset
= 0;
1476 priv
->curr_bss_params
.bss_descriptor
.bcn_wapi_ie
= NULL
;
1477 priv
->curr_bss_params
.bss_descriptor
.wapi_offset
= 0;
1478 priv
->curr_bss_params
.bss_descriptor
.bcn_ht_cap
= NULL
;
1479 priv
->curr_bss_params
.bss_descriptor
.ht_cap_offset
=
1481 priv
->curr_bss_params
.bss_descriptor
.bcn_ht_oper
= NULL
;
1482 priv
->curr_bss_params
.bss_descriptor
.ht_info_offset
=
1484 priv
->curr_bss_params
.bss_descriptor
.bcn_bss_co_2040
=
1486 priv
->curr_bss_params
.bss_descriptor
.
1487 bss_co_2040_offset
= 0;
1488 priv
->curr_bss_params
.bss_descriptor
.bcn_ext_cap
= NULL
;
1489 priv
->curr_bss_params
.bss_descriptor
.ext_cap_offset
= 0;
1490 priv
->curr_bss_params
.bss_descriptor
.beacon_buf
= NULL
;
1491 priv
->curr_bss_params
.bss_descriptor
.beacon_buf_size
=
1494 /* Make a copy of current BSSID descriptor */
1495 memcpy(&priv
->curr_bss_params
.bss_descriptor
, bss_desc
,
1496 sizeof(priv
->curr_bss_params
.bss_descriptor
));
1497 mwifiex_save_curr_bcn(priv
);
1498 spin_unlock_irqrestore(&priv
->curr_bcn_buf_lock
, flags
);
1506 * This function handles the command response of scan.
1508 * The response buffer for the scan command has the following
1511 * .-------------------------------------------------------------.
1512 * | Header (4 * sizeof(t_u16)): Standard command response hdr |
1513 * .-------------------------------------------------------------.
1514 * | BufSize (t_u16) : sizeof the BSS Description data |
1515 * .-------------------------------------------------------------.
1516 * | NumOfSet (t_u8) : Number of BSS Descs returned |
1517 * .-------------------------------------------------------------.
1518 * | BSSDescription data (variable, size given in BufSize) |
1519 * .-------------------------------------------------------------.
1520 * | TLV data (variable, size calculated using Header->Size, |
1521 * | BufSize and sizeof the fixed fields above) |
1522 * .-------------------------------------------------------------.
1524 int mwifiex_ret_802_11_scan(struct mwifiex_private
*priv
,
1525 struct host_cmd_ds_command
*resp
)
1528 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1529 struct cmd_ctrl_node
*cmd_node
;
1530 struct host_cmd_ds_802_11_scan_rsp
*scan_rsp
;
1531 struct mwifiex_ie_types_data
*tlv_data
;
1532 struct mwifiex_ie_types_tsf_timestamp
*tsf_tlv
;
1538 struct mwifiex_chan_freq_power
*cfp
;
1539 struct mwifiex_ie_types_chan_band_list_param_set
*chan_band_tlv
;
1540 struct chan_band_param_set
*chan_band
;
1542 unsigned long flags
;
1543 struct cfg80211_bss
*bss
;
1545 is_bgscan_resp
= (le16_to_cpu(resp
->command
)
1546 == HostCmd_CMD_802_11_BG_SCAN_QUERY
);
1548 scan_rsp
= &resp
->params
.bg_scan_query_resp
.scan_resp
;
1550 scan_rsp
= &resp
->params
.scan_resp
;
1553 if (scan_rsp
->number_of_sets
> MWIFIEX_MAX_AP
) {
1554 dev_err(adapter
->dev
, "SCAN_RESP: too many AP returned (%d)\n",
1555 scan_rsp
->number_of_sets
);
1560 bytes_left
= le16_to_cpu(scan_rsp
->bss_descript_size
);
1561 dev_dbg(adapter
->dev
, "info: SCAN_RESP: bss_descript_size %d\n",
1564 scan_resp_size
= le16_to_cpu(resp
->size
);
1566 dev_dbg(adapter
->dev
,
1567 "info: SCAN_RESP: returned %d APs before parsing\n",
1568 scan_rsp
->number_of_sets
);
1570 bss_info
= scan_rsp
->bss_desc_and_tlv_buffer
;
1573 * The size of the TLV buffer is equal to the entire command response
1574 * size (scan_resp_size) minus the fixed fields (sizeof()'s), the
1575 * BSS Descriptions (bss_descript_size as bytesLef) and the command
1576 * response header (S_DS_GEN)
1578 tlv_buf_size
= scan_resp_size
- (bytes_left
1579 + sizeof(scan_rsp
->bss_descript_size
)
1580 + sizeof(scan_rsp
->number_of_sets
)
1583 tlv_data
= (struct mwifiex_ie_types_data
*) (scan_rsp
->
1584 bss_desc_and_tlv_buffer
+
1587 /* Search the TLV buffer space in the scan response for any valid
1589 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter
, tlv_data
, tlv_buf_size
,
1590 TLV_TYPE_TSFTIMESTAMP
,
1591 (struct mwifiex_ie_types_data
**)
1594 /* Search the TLV buffer space in the scan response for any valid
1596 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter
, tlv_data
, tlv_buf_size
,
1597 TLV_TYPE_CHANNELBANDLIST
,
1598 (struct mwifiex_ie_types_data
**)
1601 for (idx
= 0; idx
< scan_rsp
->number_of_sets
&& bytes_left
; idx
++) {
1608 u16 beacon_size
= 0;
1612 u16 cap_info_bitmap
;
1615 struct mwifiex_bcn_param
*bcn_param
;
1616 struct mwifiex_bss_priv
*bss_priv
;
1618 if (bytes_left
>= sizeof(beacon_size
)) {
1619 /* Extract & convert beacon size from command buffer */
1620 memcpy(&beacon_size
, bss_info
, sizeof(beacon_size
));
1621 bytes_left
-= sizeof(beacon_size
);
1622 bss_info
+= sizeof(beacon_size
);
1625 if (!beacon_size
|| beacon_size
> bytes_left
) {
1626 bss_info
+= bytes_left
;
1631 /* Initialize the current working beacon pointer for this BSS
1633 current_ptr
= bss_info
;
1635 /* Advance the return beacon pointer past the current beacon */
1636 bss_info
+= beacon_size
;
1637 bytes_left
-= beacon_size
;
1639 curr_bcn_bytes
= beacon_size
;
1642 * First 5 fields are bssid, RSSI, time stamp, beacon interval,
1643 * and capability information
1645 if (curr_bcn_bytes
< sizeof(struct mwifiex_bcn_param
)) {
1646 dev_err(adapter
->dev
,
1647 "InterpretIE: not enough bytes left\n");
1650 bcn_param
= (struct mwifiex_bcn_param
*)current_ptr
;
1651 current_ptr
+= sizeof(*bcn_param
);
1652 curr_bcn_bytes
-= sizeof(*bcn_param
);
1654 memcpy(bssid
, bcn_param
->bssid
, ETH_ALEN
);
1656 rssi
= (s32
) bcn_param
->rssi
;
1657 rssi
= (-rssi
) * 100; /* Convert dBm to mBm */
1658 dev_dbg(adapter
->dev
, "info: InterpretIE: RSSI=%d\n", rssi
);
1660 timestamp
= le64_to_cpu(bcn_param
->timestamp
);
1661 beacon_period
= le16_to_cpu(bcn_param
->beacon_period
);
1663 cap_info_bitmap
= le16_to_cpu(bcn_param
->cap_info_bitmap
);
1664 dev_dbg(adapter
->dev
, "info: InterpretIE: capabilities=0x%X\n",
1667 /* Rest of the current buffer are IE's */
1668 ie_buf
= current_ptr
;
1669 ie_len
= curr_bcn_bytes
;
1670 dev_dbg(adapter
->dev
,
1671 "info: InterpretIE: IELength for this AP = %d\n",
1674 while (curr_bcn_bytes
>= sizeof(struct ieee_types_header
)) {
1675 u8 element_id
, element_len
;
1677 element_id
= *current_ptr
;
1678 element_len
= *(current_ptr
+ 1);
1679 if (curr_bcn_bytes
< element_len
+
1680 sizeof(struct ieee_types_header
)) {
1681 dev_err(priv
->adapter
->dev
,
1682 "%s: bytes left < IE length\n",
1686 if (element_id
== WLAN_EID_DS_PARAMS
) {
1687 channel
= *(u8
*) (current_ptr
+
1688 sizeof(struct ieee_types_header
));
1692 current_ptr
+= element_len
+
1693 sizeof(struct ieee_types_header
);
1694 curr_bcn_bytes
-= element_len
+
1695 sizeof(struct ieee_types_header
);
1699 * If the TSF TLV was appended to the scan results, save this
1700 * entry's TSF value in the fw_tsf field. It is the firmware's
1701 * TSF value at the time the beacon or probe response was
1705 memcpy(&fw_tsf
, &tsf_tlv
->tsf_data
[idx
* TSF_DATA_SIZE
],
1709 struct ieee80211_channel
*chan
;
1713 if (chan_band_tlv
) {
1715 &chan_band_tlv
->chan_band_param
[idx
];
1716 band
= mwifiex_radio_type_to_band(
1717 chan_band
->radio_type
1718 & (BIT(0) | BIT(1)));
1721 cfp
= mwifiex_get_cfp(priv
, band
, channel
, 0);
1723 freq
= cfp
? cfp
->freq
: 0;
1725 chan
= ieee80211_get_channel(priv
->wdev
->wiphy
, freq
);
1727 if (chan
&& !(chan
->flags
& IEEE80211_CHAN_DISABLED
)) {
1728 bss
= cfg80211_inform_bss(priv
->wdev
->wiphy
,
1729 chan
, bssid
, timestamp
,
1730 cap_info_bitmap
, beacon_period
,
1731 ie_buf
, ie_len
, rssi
, GFP_KERNEL
);
1732 bss_priv
= (struct mwifiex_bss_priv
*)bss
->priv
;
1733 bss_priv
->band
= band
;
1734 bss_priv
->fw_tsf
= fw_tsf
;
1735 if (priv
->media_connected
&&
1737 priv
->curr_bss_params
.bss_descriptor
1738 .mac_address
, ETH_ALEN
))
1739 mwifiex_update_curr_bss_params(priv
,
1741 cfg80211_put_bss(bss
);
1744 dev_dbg(adapter
->dev
, "missing BSS channel IE\n");
1748 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1749 if (list_empty(&adapter
->scan_pending_q
)) {
1750 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
1751 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1752 adapter
->scan_processing
= false;
1753 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1755 /* Need to indicate IOCTL complete */
1756 if (adapter
->curr_cmd
->wait_q_enabled
) {
1757 adapter
->cmd_wait_q
.status
= 0;
1758 mwifiex_complete_cmd(adapter
, adapter
->curr_cmd
);
1760 if (priv
->report_scan_result
)
1761 priv
->report_scan_result
= false;
1762 if (priv
->scan_pending_on_block
) {
1763 priv
->scan_pending_on_block
= false;
1764 up(&priv
->async_sem
);
1767 if (priv
->user_scan_cfg
) {
1768 dev_dbg(priv
->adapter
->dev
,
1769 "info: %s: sending scan results\n", __func__
);
1770 cfg80211_scan_done(priv
->scan_request
, 0);
1771 priv
->scan_request
= NULL
;
1772 kfree(priv
->user_scan_cfg
);
1773 priv
->user_scan_cfg
= NULL
;
1776 if (!mwifiex_wmm_lists_empty(adapter
)) {
1777 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1779 adapter
->scan_delay_cnt
= 1;
1780 mod_timer(&priv
->scan_delay_timer
, jiffies
+
1781 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC
));
1783 /* Get scan command from scan_pending_q and put to
1785 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
1786 struct cmd_ctrl_node
, list
);
1787 list_del(&cmd_node
->list
);
1788 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1790 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
1800 * This function prepares command for background scan query.
1802 * Preparation includes -
1803 * - Setting command ID and proper size
1804 * - Setting background scan flush parameter
1805 * - Ensuring correct endian-ness
1807 int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command
*cmd
)
1809 struct host_cmd_ds_802_11_bg_scan_query
*bg_query
=
1810 &cmd
->params
.bg_scan_query
;
1812 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY
);
1813 cmd
->size
= cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query
)
1816 bg_query
->flush
= 1;
1822 * This function inserts scan command node to the scan pending queue.
1825 mwifiex_queue_scan_cmd(struct mwifiex_private
*priv
,
1826 struct cmd_ctrl_node
*cmd_node
)
1828 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1829 unsigned long flags
;
1831 cmd_node
->wait_q_enabled
= true;
1832 cmd_node
->condition
= &adapter
->scan_wait_q_woken
;
1833 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1834 list_add_tail(&cmd_node
->list
, &adapter
->scan_pending_q
);
1835 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
1839 * This function sends a scan command for all available channels to the
1840 * firmware, filtered on a specific SSID.
1842 static int mwifiex_scan_specific_ssid(struct mwifiex_private
*priv
,
1843 struct cfg80211_ssid
*req_ssid
)
1845 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1847 struct mwifiex_user_scan_cfg
*scan_cfg
;
1852 if (adapter
->scan_processing
) {
1853 dev_dbg(adapter
->dev
, "cmd: Scan already in process...\n");
1857 if (priv
->scan_block
) {
1858 dev_dbg(adapter
->dev
,
1859 "cmd: Scan is blocked during association...\n");
1863 scan_cfg
= kzalloc(sizeof(struct mwifiex_user_scan_cfg
), GFP_KERNEL
);
1865 dev_err(adapter
->dev
, "failed to alloc scan_cfg\n");
1869 scan_cfg
->ssid_list
= req_ssid
;
1870 scan_cfg
->num_ssids
= 1;
1872 ret
= mwifiex_scan_networks(priv
, scan_cfg
);
1879 * Sends IOCTL request to start a scan.
1881 * This function allocates the IOCTL request buffer, fills it
1882 * with requisite parameters and calls the IOCTL handler.
1884 * Scan command can be issued for both normal scan and specific SSID
1885 * scan, depending upon whether an SSID is provided or not.
1887 int mwifiex_request_scan(struct mwifiex_private
*priv
,
1888 struct cfg80211_ssid
*req_ssid
)
1892 if (down_interruptible(&priv
->async_sem
)) {
1893 dev_err(priv
->adapter
->dev
, "%s: acquire semaphore\n",
1897 priv
->scan_pending_on_block
= true;
1899 priv
->adapter
->scan_wait_q_woken
= false;
1901 if (req_ssid
&& req_ssid
->ssid_len
!= 0)
1902 /* Specific SSID scan */
1903 ret
= mwifiex_scan_specific_ssid(priv
, req_ssid
);
1906 ret
= mwifiex_scan_networks(priv
, NULL
);
1909 ret
= mwifiex_wait_queue_complete(priv
->adapter
);
1912 priv
->scan_pending_on_block
= false;
1913 up(&priv
->async_sem
);
1920 * This function appends the vendor specific IE TLV to a buffer.
1923 mwifiex_cmd_append_vsie_tlv(struct mwifiex_private
*priv
,
1924 u16 vsie_mask
, u8
**buffer
)
1926 int id
, ret_len
= 0;
1927 struct mwifiex_ie_types_vendor_param_set
*vs_param_set
;
1935 * Traverse through the saved vendor specific IE array and append
1936 * the selected(scan/assoc/adhoc) IE as TLV to the command
1938 for (id
= 0; id
< MWIFIEX_MAX_VSIE_NUM
; id
++) {
1939 if (priv
->vs_ie
[id
].mask
& vsie_mask
) {
1941 (struct mwifiex_ie_types_vendor_param_set
*)
1943 vs_param_set
->header
.type
=
1944 cpu_to_le16(TLV_TYPE_PASSTHROUGH
);
1945 vs_param_set
->header
.len
=
1946 cpu_to_le16((((u16
) priv
->vs_ie
[id
].ie
[1])
1948 memcpy(vs_param_set
->ie
, priv
->vs_ie
[id
].ie
,
1949 le16_to_cpu(vs_param_set
->header
.len
));
1950 *buffer
+= le16_to_cpu(vs_param_set
->header
.len
) +
1951 sizeof(struct mwifiex_ie_types_header
);
1952 ret_len
+= le16_to_cpu(vs_param_set
->header
.len
) +
1953 sizeof(struct mwifiex_ie_types_header
);
1960 * This function saves a beacon buffer of the current BSS descriptor.
1962 * The current beacon buffer is saved so that it can be restored in the
1963 * following cases that makes the beacon buffer not to contain the current
1964 * ssid's beacon buffer.
1965 * - The current ssid was not found somehow in the last scan.
1966 * - The current ssid was the last entry of the scan table and overloaded.
1969 mwifiex_save_curr_bcn(struct mwifiex_private
*priv
)
1971 struct mwifiex_bssdescriptor
*curr_bss
=
1972 &priv
->curr_bss_params
.bss_descriptor
;
1974 if (!curr_bss
->beacon_buf_size
)
1977 /* allocate beacon buffer at 1st time; or if it's size has changed */
1978 if (!priv
->curr_bcn_buf
||
1979 priv
->curr_bcn_size
!= curr_bss
->beacon_buf_size
) {
1980 priv
->curr_bcn_size
= curr_bss
->beacon_buf_size
;
1982 kfree(priv
->curr_bcn_buf
);
1983 priv
->curr_bcn_buf
= kmalloc(curr_bss
->beacon_buf_size
,
1985 if (!priv
->curr_bcn_buf
) {
1986 dev_err(priv
->adapter
->dev
,
1987 "failed to alloc curr_bcn_buf\n");
1992 memcpy(priv
->curr_bcn_buf
, curr_bss
->beacon_buf
,
1993 curr_bss
->beacon_buf_size
);
1994 dev_dbg(priv
->adapter
->dev
, "info: current beacon saved %d\n",
1995 priv
->curr_bcn_size
);
1997 curr_bss
->beacon_buf
= priv
->curr_bcn_buf
;
1999 /* adjust the pointers in the current BSS descriptor */
2000 if (curr_bss
->bcn_wpa_ie
)
2001 curr_bss
->bcn_wpa_ie
=
2002 (struct ieee_types_vendor_specific
*)
2003 (curr_bss
->beacon_buf
+
2004 curr_bss
->wpa_offset
);
2006 if (curr_bss
->bcn_rsn_ie
)
2007 curr_bss
->bcn_rsn_ie
= (struct ieee_types_generic
*)
2008 (curr_bss
->beacon_buf
+
2009 curr_bss
->rsn_offset
);
2011 if (curr_bss
->bcn_ht_cap
)
2012 curr_bss
->bcn_ht_cap
= (struct ieee80211_ht_cap
*)
2013 (curr_bss
->beacon_buf
+
2014 curr_bss
->ht_cap_offset
);
2016 if (curr_bss
->bcn_ht_oper
)
2017 curr_bss
->bcn_ht_oper
= (struct ieee80211_ht_operation
*)
2018 (curr_bss
->beacon_buf
+
2019 curr_bss
->ht_info_offset
);
2021 if (curr_bss
->bcn_bss_co_2040
)
2022 curr_bss
->bcn_bss_co_2040
=
2023 (u8
*) (curr_bss
->beacon_buf
+
2024 curr_bss
->bss_co_2040_offset
);
2026 if (curr_bss
->bcn_ext_cap
)
2027 curr_bss
->bcn_ext_cap
= (u8
*) (curr_bss
->beacon_buf
+
2028 curr_bss
->ext_cap_offset
);
2032 * This function frees the current BSS descriptor beacon buffer.
2035 mwifiex_free_curr_bcn(struct mwifiex_private
*priv
)
2037 kfree(priv
->curr_bcn_buf
);
2038 priv
->curr_bcn_buf
= NULL
;