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
==
156 WLAN_EID_VENDOR_SPECIFIC
))) {
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
!=
205 WLAN_EID_VENDOR_SPECIFIC
)) &&
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
)).
241 vend_hdr
.element_id
== WLAN_EID_VENDOR_SPECIFIC
))
243 * Privacy bit may NOT be set in some APs like
244 * LinkSys WRT54G && bss_desc->privacy
247 dev_dbg(priv
->adapter
->dev
, "info: %s: WPA:"
248 " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s "
249 "EncMode=%#x privacy=%#x\n", __func__
,
250 (bss_desc
->bcn_wpa_ie
) ?
251 (*(bss_desc
->bcn_wpa_ie
)).
252 vend_hdr
.element_id
: 0,
253 (bss_desc
->bcn_rsn_ie
) ?
254 (*(bss_desc
->bcn_rsn_ie
)).
255 ieee_hdr
.element_id
: 0,
256 (priv
->sec_info
.wep_enabled
) ? "e" : "d",
257 (priv
->sec_info
.wpa_enabled
) ? "e" : "d",
258 (priv
->sec_info
.wpa2_enabled
) ? "e" : "d",
259 priv
->sec_info
.encryption_mode
,
267 * This function checks if wpa2 is enabled in driver and scanned network is
268 * compatible with it.
271 mwifiex_is_bss_wpa2(struct mwifiex_private
*priv
,
272 struct mwifiex_bssdescriptor
*bss_desc
)
274 if (!priv
->sec_info
.wep_enabled
&&
275 !priv
->sec_info
.wpa_enabled
&&
276 priv
->sec_info
.wpa2_enabled
&&
277 ((bss_desc
->bcn_rsn_ie
) &&
278 ((*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
== WLAN_EID_RSN
))) {
280 * Privacy bit may NOT be set in some APs like
281 * LinkSys WRT54G && bss_desc->privacy
283 dev_dbg(priv
->adapter
->dev
, "info: %s: WPA2: "
284 " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s "
285 "EncMode=%#x privacy=%#x\n", __func__
,
286 (bss_desc
->bcn_wpa_ie
) ?
287 (*(bss_desc
->bcn_wpa_ie
)).
288 vend_hdr
.element_id
: 0,
289 (bss_desc
->bcn_rsn_ie
) ?
290 (*(bss_desc
->bcn_rsn_ie
)).
291 ieee_hdr
.element_id
: 0,
292 (priv
->sec_info
.wep_enabled
) ? "e" : "d",
293 (priv
->sec_info
.wpa_enabled
) ? "e" : "d",
294 (priv
->sec_info
.wpa2_enabled
) ? "e" : "d",
295 priv
->sec_info
.encryption_mode
,
303 * This function checks if adhoc AES is enabled in driver and scanned network is
304 * compatible with it.
307 mwifiex_is_bss_adhoc_aes(struct mwifiex_private
*priv
,
308 struct mwifiex_bssdescriptor
*bss_desc
)
310 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
311 !priv
->sec_info
.wpa2_enabled
&&
312 ((!bss_desc
->bcn_wpa_ie
) ||
313 ((*(bss_desc
->bcn_wpa_ie
)).
314 vend_hdr
.element_id
!= WLAN_EID_VENDOR_SPECIFIC
)) &&
315 ((!bss_desc
->bcn_rsn_ie
) ||
316 ((*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
!= WLAN_EID_RSN
)) &&
317 !priv
->sec_info
.encryption_mode
&& bss_desc
->privacy
) {
324 * This function checks if dynamic WEP is enabled in driver and scanned network
325 * is compatible with it.
328 mwifiex_is_bss_dynamic_wep(struct mwifiex_private
*priv
,
329 struct mwifiex_bssdescriptor
*bss_desc
)
331 if (!priv
->sec_info
.wep_enabled
&& !priv
->sec_info
.wpa_enabled
&&
332 !priv
->sec_info
.wpa2_enabled
&&
333 ((!bss_desc
->bcn_wpa_ie
) ||
334 ((*(bss_desc
->bcn_wpa_ie
)).
335 vend_hdr
.element_id
!= WLAN_EID_VENDOR_SPECIFIC
)) &&
336 ((!bss_desc
->bcn_rsn_ie
) ||
337 ((*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
!= WLAN_EID_RSN
)) &&
338 priv
->sec_info
.encryption_mode
&& bss_desc
->privacy
) {
339 dev_dbg(priv
->adapter
->dev
, "info: %s: dynamic "
340 "WEP: wpa_ie=%#x wpa2_ie=%#x "
341 "EncMode=%#x privacy=%#x\n",
343 (bss_desc
->bcn_wpa_ie
) ?
344 (*(bss_desc
->bcn_wpa_ie
)).
345 vend_hdr
.element_id
: 0,
346 (bss_desc
->bcn_rsn_ie
) ?
347 (*(bss_desc
->bcn_rsn_ie
)).
348 ieee_hdr
.element_id
: 0,
349 priv
->sec_info
.encryption_mode
,
357 * This function checks if a scanned network is compatible with the driver
360 * WEP WPA WPA2 ad-hoc encrypt Network
361 * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible
362 * 0 0 0 0 NONE 0 0 0 yes No security
363 * 0 1 0 0 x 1x 1 x yes WPA (disable
365 * 0 0 1 0 x 1x x 1 yes WPA2 (disable
367 * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES
368 * 1 0 0 0 NONE 1 0 0 yes Static WEP
370 * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP
372 * Compatibility is not matched while roaming, except for mode.
375 mwifiex_is_network_compatible(struct mwifiex_private
*priv
,
376 struct mwifiex_bssdescriptor
*bss_desc
, u32 mode
)
378 struct mwifiex_adapter
*adapter
= priv
->adapter
;
380 bss_desc
->disable_11n
= false;
382 /* Don't check for compatibility if roaming */
383 if (priv
->media_connected
&&
384 (priv
->bss_mode
== NL80211_IFTYPE_STATION
) &&
385 (bss_desc
->bss_mode
== NL80211_IFTYPE_STATION
))
388 if (priv
->wps
.session_enable
) {
389 dev_dbg(adapter
->dev
,
390 "info: return success directly in WPS period\n");
394 if (bss_desc
->chan_sw_ie_present
) {
395 dev_err(adapter
->dev
,
396 "Don't connect to AP with WLAN_EID_CHANNEL_SWITCH\n");
400 if (mwifiex_is_bss_wapi(priv
, bss_desc
)) {
401 dev_dbg(adapter
->dev
, "info: return success for WAPI AP\n");
405 if (bss_desc
->bss_mode
== mode
) {
406 if (mwifiex_is_bss_no_sec(priv
, bss_desc
)) {
409 } else if (mwifiex_is_bss_static_wep(priv
, bss_desc
)) {
410 /* Static WEP enabled */
411 dev_dbg(adapter
->dev
, "info: Disable 11n in WEP mode.\n");
412 bss_desc
->disable_11n
= true;
414 } else if (mwifiex_is_bss_wpa(priv
, bss_desc
)) {
416 if (((priv
->adapter
->config_bands
& BAND_GN
||
417 priv
->adapter
->config_bands
& BAND_AN
) &&
418 bss_desc
->bcn_ht_cap
) &&
419 !mwifiex_is_wpa_oui_present(bss_desc
,
420 CIPHER_SUITE_CCMP
)) {
422 if (mwifiex_is_wpa_oui_present
423 (bss_desc
, CIPHER_SUITE_TKIP
)) {
424 dev_dbg(adapter
->dev
,
425 "info: Disable 11n if AES "
426 "is not supported by AP\n");
427 bss_desc
->disable_11n
= true;
433 } else if (mwifiex_is_bss_wpa2(priv
, bss_desc
)) {
435 if (((priv
->adapter
->config_bands
& BAND_GN
||
436 priv
->adapter
->config_bands
& BAND_AN
) &&
437 bss_desc
->bcn_ht_cap
) &&
438 !mwifiex_is_rsn_oui_present(bss_desc
,
439 CIPHER_SUITE_CCMP
)) {
441 if (mwifiex_is_rsn_oui_present
442 (bss_desc
, CIPHER_SUITE_TKIP
)) {
443 dev_dbg(adapter
->dev
,
444 "info: Disable 11n if AES "
445 "is not supported by AP\n");
446 bss_desc
->disable_11n
= true;
452 } else if (mwifiex_is_bss_adhoc_aes(priv
, bss_desc
)) {
453 /* Ad-hoc AES enabled */
455 } else if (mwifiex_is_bss_dynamic_wep(priv
, bss_desc
)) {
456 /* Dynamic WEP enabled */
460 /* Security doesn't match */
461 dev_dbg(adapter
->dev
,
462 "info: %s: failed: wpa_ie=%#x wpa2_ie=%#x WEP=%s "
463 "WPA=%s WPA2=%s EncMode=%#x privacy=%#x\n", __func__
,
464 (bss_desc
->bcn_wpa_ie
) ?
465 (*(bss_desc
->bcn_wpa_ie
)).vend_hdr
.element_id
: 0,
466 (bss_desc
->bcn_rsn_ie
) ?
467 (*(bss_desc
->bcn_rsn_ie
)).ieee_hdr
.element_id
: 0,
468 (priv
->sec_info
.wep_enabled
) ? "e" : "d",
469 (priv
->sec_info
.wpa_enabled
) ? "e" : "d",
470 (priv
->sec_info
.wpa2_enabled
) ? "e" : "d",
471 priv
->sec_info
.encryption_mode
, bss_desc
->privacy
);
475 /* Mode doesn't match */
480 * This function creates a channel list for the driver to scan, based
481 * on region/band information.
483 * This routine is used for any scan that is not provided with a
484 * specific channel list to scan.
487 mwifiex_scan_create_channel_list(struct mwifiex_private
*priv
,
488 const struct mwifiex_user_scan_cfg
490 struct mwifiex_chan_scan_param_set
494 enum ieee80211_band band
;
495 struct ieee80211_supported_band
*sband
;
496 struct ieee80211_channel
*ch
;
497 struct mwifiex_adapter
*adapter
= priv
->adapter
;
500 for (band
= 0; (band
< IEEE80211_NUM_BANDS
) ; band
++) {
502 if (!priv
->wdev
->wiphy
->bands
[band
])
505 sband
= priv
->wdev
->wiphy
->bands
[band
];
507 for (i
= 0; (i
< sband
->n_channels
) ; i
++) {
508 ch
= &sband
->channels
[i
];
509 if (ch
->flags
& IEEE80211_CHAN_DISABLED
)
511 scan_chan_list
[chan_idx
].radio_type
= band
;
514 user_scan_in
->chan_list
[0].scan_time
)
515 scan_chan_list
[chan_idx
].max_scan_time
=
516 cpu_to_le16((u16
) user_scan_in
->
517 chan_list
[0].scan_time
);
518 else if (ch
->flags
& IEEE80211_CHAN_NO_IR
)
519 scan_chan_list
[chan_idx
].max_scan_time
=
520 cpu_to_le16(adapter
->passive_scan_time
);
522 scan_chan_list
[chan_idx
].max_scan_time
=
523 cpu_to_le16(adapter
->active_scan_time
);
525 if (ch
->flags
& IEEE80211_CHAN_NO_IR
)
526 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
527 |= MWIFIEX_PASSIVE_SCAN
;
529 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
530 &= ~MWIFIEX_PASSIVE_SCAN
;
531 scan_chan_list
[chan_idx
].chan_number
=
534 scan_chan_list
[chan_idx
].max_scan_time
=
535 cpu_to_le16(adapter
->specific_scan_time
);
536 scan_chan_list
[chan_idx
].chan_scan_mode_bitmap
537 |= MWIFIEX_DISABLE_CHAN_FILT
;
546 /* This function appends rate TLV to scan config command. */
548 mwifiex_append_rate_tlv(struct mwifiex_private
*priv
,
549 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
552 struct mwifiex_ie_types_rates_param_set
*rates_tlv
;
553 u8 rates
[MWIFIEX_SUPPORTED_RATES
], *tlv_pos
;
556 memset(rates
, 0, sizeof(rates
));
558 tlv_pos
= (u8
*)scan_cfg_out
->tlv_buf
+ scan_cfg_out
->tlv_buf_len
;
560 if (priv
->scan_request
)
561 rates_size
= mwifiex_get_rates_from_cfg80211(priv
, rates
,
564 rates_size
= mwifiex_get_supported_rates(priv
, rates
);
566 dev_dbg(priv
->adapter
->dev
, "info: SCAN_CMD: Rates size = %d\n",
568 rates_tlv
= (struct mwifiex_ie_types_rates_param_set
*)tlv_pos
;
569 rates_tlv
->header
.type
= cpu_to_le16(WLAN_EID_SUPP_RATES
);
570 rates_tlv
->header
.len
= cpu_to_le16((u16
) rates_size
);
571 memcpy(rates_tlv
->rates
, rates
, rates_size
);
572 scan_cfg_out
->tlv_buf_len
+= sizeof(rates_tlv
->header
) + rates_size
;
578 * This function constructs and sends multiple scan config commands to
581 * Previous routines in the code flow have created a scan command configuration
582 * with any requested TLVs. This function splits the channel TLV into maximum
583 * channels supported per scan lists and sends the portion of the channel TLV,
584 * along with the other TLVs, to the firmware.
587 mwifiex_scan_channel_list(struct mwifiex_private
*priv
,
588 u32 max_chan_per_scan
, u8 filtered_scan
,
589 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
590 struct mwifiex_ie_types_chan_list_param_set
592 struct mwifiex_chan_scan_param_set
*scan_chan_list
)
595 struct mwifiex_chan_scan_param_set
*tmp_chan_list
;
596 struct mwifiex_chan_scan_param_set
*start_chan
;
598 u32 tlv_idx
, rates_size
, cmd_no
;
603 if (!scan_cfg_out
|| !chan_tlv_out
|| !scan_chan_list
) {
604 dev_dbg(priv
->adapter
->dev
,
605 "info: Scan: Null detect: %p, %p, %p\n",
606 scan_cfg_out
, chan_tlv_out
, scan_chan_list
);
610 /* Check csa channel expiry before preparing scan list */
611 mwifiex_11h_get_csa_closed_channel(priv
);
613 chan_tlv_out
->header
.type
= cpu_to_le16(TLV_TYPE_CHANLIST
);
615 /* Set the temp channel struct pointer to the start of the desired
617 tmp_chan_list
= scan_chan_list
;
619 /* Loop through the desired channel list, sending a new firmware scan
620 commands for each max_chan_per_scan channels (or for 1,6,11
621 individually if configured accordingly) */
622 while (tmp_chan_list
->chan_number
) {
627 chan_tlv_out
->header
.len
= 0;
628 start_chan
= tmp_chan_list
;
632 * Construct the Channel TLV for the scan command. Continue to
633 * insert channel TLVs until:
634 * - the tlv_idx hits the maximum configured per scan command
635 * - the next channel to insert is 0 (end of desired channel
637 * - done_early is set (controlling individual scanning of
640 while (tlv_idx
< max_chan_per_scan
&&
641 tmp_chan_list
->chan_number
&& !done_early
) {
643 if (tmp_chan_list
->chan_number
== priv
->csa_chan
) {
648 radio_type
= tmp_chan_list
->radio_type
;
649 dev_dbg(priv
->adapter
->dev
,
650 "info: Scan: Chan(%3d), Radio(%d),"
651 " Mode(%d, %d), Dur(%d)\n",
652 tmp_chan_list
->chan_number
,
653 tmp_chan_list
->radio_type
,
654 tmp_chan_list
->chan_scan_mode_bitmap
655 & MWIFIEX_PASSIVE_SCAN
,
656 (tmp_chan_list
->chan_scan_mode_bitmap
657 & MWIFIEX_DISABLE_CHAN_FILT
) >> 1,
658 le16_to_cpu(tmp_chan_list
->max_scan_time
));
660 /* Copy the current channel TLV to the command being
662 memcpy(chan_tlv_out
->chan_scan_param
+ tlv_idx
,
664 sizeof(chan_tlv_out
->chan_scan_param
));
666 /* Increment the TLV header length by the size
668 le16_add_cpu(&chan_tlv_out
->header
.len
,
669 sizeof(chan_tlv_out
->chan_scan_param
));
672 * The tlv buffer length is set to the number of bytes
673 * of the between the channel tlv pointer and the start
674 * of the tlv buffer. This compensates for any TLVs
675 * that were appended before the channel list.
677 scan_cfg_out
->tlv_buf_len
= (u32
) ((u8
*) chan_tlv_out
-
678 scan_cfg_out
->tlv_buf
);
680 /* Add the size of the channel tlv header and the data
682 scan_cfg_out
->tlv_buf_len
+=
683 (sizeof(chan_tlv_out
->header
)
684 + le16_to_cpu(chan_tlv_out
->header
.len
));
686 /* Increment the index to the channel tlv we are
690 /* Count the total scan time per command */
692 le16_to_cpu(tmp_chan_list
->max_scan_time
);
696 /* Stop the loop if the *current* channel is in the
697 1,6,11 set and we are not filtering on a BSSID
699 if (!filtered_scan
&&
700 (tmp_chan_list
->chan_number
== 1 ||
701 tmp_chan_list
->chan_number
== 6 ||
702 tmp_chan_list
->chan_number
== 11))
705 /* Increment the tmp pointer to the next channel to
709 /* Stop the loop if the *next* channel is in the 1,6,11
710 set. This will cause it to be the only channel
711 scanned on the next interation */
712 if (!filtered_scan
&&
713 (tmp_chan_list
->chan_number
== 1 ||
714 tmp_chan_list
->chan_number
== 6 ||
715 tmp_chan_list
->chan_number
== 11))
719 /* The total scan time should be less than scan command timeout
721 if (total_scan_time
> MWIFIEX_MAX_TOTAL_SCAN_TIME
) {
722 dev_err(priv
->adapter
->dev
, "total scan time %dms"
723 " is over limit (%dms), scan skipped\n",
724 total_scan_time
, MWIFIEX_MAX_TOTAL_SCAN_TIME
);
729 rates_size
= mwifiex_append_rate_tlv(priv
, scan_cfg_out
,
732 priv
->adapter
->scan_channels
= start_chan
;
734 /* Send the scan command to the firmware with the specified
736 if (priv
->adapter
->ext_scan
)
737 cmd_no
= HostCmd_CMD_802_11_SCAN_EXT
;
739 cmd_no
= HostCmd_CMD_802_11_SCAN
;
741 ret
= mwifiex_send_cmd_async(priv
, cmd_no
, HostCmd_ACT_GEN_SET
,
744 /* rate IE is updated per scan command but same starting
745 * pointer is used each time so that rate IE from earlier
746 * scan_cfg_out->buf is overwritten with new one.
748 scan_cfg_out
->tlv_buf_len
-=
749 sizeof(struct mwifiex_ie_types_header
) + rates_size
;
762 * This function constructs a scan command configuration structure to use
765 * Application layer or other functions can invoke network scanning
766 * with a scan configuration supplied in a user scan configuration structure.
767 * This structure is used as the basis of one or many scan command configuration
768 * commands that are sent to the command processing module and eventually to the
771 * This function creates a scan command configuration structure based on the
772 * following user supplied parameters (if present):
775 * - Number of Probes to be sent
778 * If the SSID or BSSID filter is not present, the filter is disabled/cleared.
779 * If the number of probes is not set, adapter default setting is used.
782 mwifiex_config_scan(struct mwifiex_private
*priv
,
783 const struct mwifiex_user_scan_cfg
*user_scan_in
,
784 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
785 struct mwifiex_ie_types_chan_list_param_set
**chan_list_out
,
786 struct mwifiex_chan_scan_param_set
*scan_chan_list
,
787 u8
*max_chan_per_scan
, u8
*filtered_scan
,
788 u8
*scan_current_only
)
790 struct mwifiex_adapter
*adapter
= priv
->adapter
;
791 struct mwifiex_ie_types_num_probes
*num_probes_tlv
;
792 struct mwifiex_ie_types_wildcard_ssid_params
*wildcard_ssid_tlv
;
793 struct mwifiex_ie_types_bssid_list
*bssid_tlv
;
805 struct mwifiex_ie_types_htcap
*ht_cap
;
807 /* The tlv_buf_len is calculated for each scan command. The TLVs added
808 in this routine will be preserved since the routine that sends the
809 command will append channelTLVs at *chan_list_out. The difference
810 between the *chan_list_out and the tlv_buf start will be used to
811 calculate the size of anything we add in this routine. */
812 scan_cfg_out
->tlv_buf_len
= 0;
814 /* Running tlv pointer. Assigned to chan_list_out at end of function
815 so later routines know where channels can be added to the command
817 tlv_pos
= scan_cfg_out
->tlv_buf
;
819 /* Initialize the scan as un-filtered; the flag is later set to TRUE
820 below if a SSID or BSSID filter is sent in the command */
821 *filtered_scan
= false;
823 /* Initialize the scan as not being only on the current channel. If
824 the channel list is customized, only contains one channel, and is
825 the active channel, this is set true and data flow is not halted. */
826 *scan_current_only
= false;
830 /* Default the ssid_filter flag to TRUE, set false under
831 certain wildcard conditions and qualified by the existence
832 of an SSID list before marking the scan as filtered */
835 /* Set the BSS type scan filter, use Adapter setting if
837 scan_cfg_out
->bss_mode
=
838 (user_scan_in
->bss_mode
? (u8
) user_scan_in
->
839 bss_mode
: (u8
) adapter
->scan_mode
);
841 /* Set the number of probes to send, use Adapter setting
844 (user_scan_in
->num_probes
? user_scan_in
->
845 num_probes
: adapter
->scan_probes
);
848 * Set the BSSID filter to the incoming configuration,
849 * if non-zero. If not set, it will remain disabled
852 memcpy(scan_cfg_out
->specific_bssid
,
853 user_scan_in
->specific_bssid
,
854 sizeof(scan_cfg_out
->specific_bssid
));
856 if (adapter
->ext_scan
&&
857 !is_zero_ether_addr(scan_cfg_out
->specific_bssid
)) {
859 (struct mwifiex_ie_types_bssid_list
*)tlv_pos
;
860 bssid_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_BSSID
);
861 bssid_tlv
->header
.len
= cpu_to_le16(ETH_ALEN
);
862 memcpy(bssid_tlv
->bssid
, user_scan_in
->specific_bssid
,
864 tlv_pos
+= sizeof(struct mwifiex_ie_types_bssid_list
);
867 for (i
= 0; i
< user_scan_in
->num_ssids
; i
++) {
868 ssid_len
= user_scan_in
->ssid_list
[i
].ssid_len
;
871 (struct mwifiex_ie_types_wildcard_ssid_params
*)
873 wildcard_ssid_tlv
->header
.type
=
874 cpu_to_le16(TLV_TYPE_WILDCARDSSID
);
875 wildcard_ssid_tlv
->header
.len
= cpu_to_le16(
876 (u16
) (ssid_len
+ sizeof(wildcard_ssid_tlv
->
880 * max_ssid_length = 0 tells firmware to perform
881 * specific scan for the SSID filled, whereas
882 * max_ssid_length = IEEE80211_MAX_SSID_LEN is for
886 wildcard_ssid_tlv
->max_ssid_length
= 0;
888 wildcard_ssid_tlv
->max_ssid_length
=
889 IEEE80211_MAX_SSID_LEN
;
891 memcpy(wildcard_ssid_tlv
->ssid
,
892 user_scan_in
->ssid_list
[i
].ssid
, ssid_len
);
894 tlv_pos
+= (sizeof(wildcard_ssid_tlv
->header
)
895 + le16_to_cpu(wildcard_ssid_tlv
->header
.len
));
897 dev_dbg(adapter
->dev
, "info: scan: ssid[%d]: %s, %d\n",
898 i
, wildcard_ssid_tlv
->ssid
,
899 wildcard_ssid_tlv
->max_ssid_length
);
901 /* Empty wildcard ssid with a maxlen will match many or
902 potentially all SSIDs (maxlen == 32), therefore do
903 not treat the scan as
905 if (!ssid_len
&& wildcard_ssid_tlv
->max_ssid_length
)
910 * The default number of channels sent in the command is low to
911 * ensure the response buffer from the firmware does not
912 * truncate scan results. That is not an issue with an SSID
913 * or BSSID filter applied to the scan results in the firmware.
915 if ((i
&& ssid_filter
) ||
916 !is_zero_ether_addr(scan_cfg_out
->specific_bssid
))
917 *filtered_scan
= true;
919 scan_cfg_out
->bss_mode
= (u8
) adapter
->scan_mode
;
920 num_probes
= adapter
->scan_probes
;
924 * If a specific BSSID or SSID is used, the number of channels in the
925 * scan command will be increased to the absolute maximum.
928 *max_chan_per_scan
= MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN
;
930 *max_chan_per_scan
= MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD
;
932 /* If the input config or adapter has the number of Probes set,
936 dev_dbg(adapter
->dev
, "info: scan: num_probes = %d\n",
939 num_probes_tlv
= (struct mwifiex_ie_types_num_probes
*) tlv_pos
;
940 num_probes_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_NUMPROBES
);
941 num_probes_tlv
->header
.len
=
942 cpu_to_le16(sizeof(num_probes_tlv
->num_probes
));
943 num_probes_tlv
->num_probes
= cpu_to_le16((u16
) num_probes
);
945 tlv_pos
+= sizeof(num_probes_tlv
->header
) +
946 le16_to_cpu(num_probes_tlv
->header
.len
);
950 if (ISSUPP_11NENABLED(priv
->adapter
->fw_cap_info
) &&
951 (priv
->adapter
->config_bands
& BAND_GN
||
952 priv
->adapter
->config_bands
& BAND_AN
)) {
953 ht_cap
= (struct mwifiex_ie_types_htcap
*) tlv_pos
;
954 memset(ht_cap
, 0, sizeof(struct mwifiex_ie_types_htcap
));
955 ht_cap
->header
.type
= cpu_to_le16(WLAN_EID_HT_CAPABILITY
);
957 cpu_to_le16(sizeof(struct ieee80211_ht_cap
));
959 mwifiex_band_to_radio_type(priv
->adapter
->config_bands
);
960 mwifiex_fill_cap_info(priv
, radio_type
, &ht_cap
->ht_cap
);
961 tlv_pos
+= sizeof(struct mwifiex_ie_types_htcap
);
964 /* Append vendor specific IE TLV */
965 mwifiex_cmd_append_vsie_tlv(priv
, MWIFIEX_VSIE_MASK_SCAN
, &tlv_pos
);
968 * Set the output for the channel TLV to the address in the tlv buffer
969 * past any TLVs that were added in this function (SSID, num_probes).
970 * Channel TLVs will be added past this for each scan command,
971 * preserving the TLVs that were previously added.
974 (struct mwifiex_ie_types_chan_list_param_set
*) tlv_pos
;
976 if (user_scan_in
&& user_scan_in
->chan_list
[0].chan_number
) {
978 dev_dbg(adapter
->dev
, "info: Scan: Using supplied channel list\n");
981 chan_idx
< MWIFIEX_USER_SCAN_CHAN_MAX
&&
982 user_scan_in
->chan_list
[chan_idx
].chan_number
;
985 channel
= user_scan_in
->chan_list
[chan_idx
].chan_number
;
986 (scan_chan_list
+ chan_idx
)->chan_number
= channel
;
989 user_scan_in
->chan_list
[chan_idx
].radio_type
;
990 (scan_chan_list
+ chan_idx
)->radio_type
= radio_type
;
992 scan_type
= user_scan_in
->chan_list
[chan_idx
].scan_type
;
994 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
996 chan_idx
)->chan_scan_mode_bitmap
997 |= MWIFIEX_PASSIVE_SCAN
;
1000 chan_idx
)->chan_scan_mode_bitmap
1001 &= ~MWIFIEX_PASSIVE_SCAN
;
1005 chan_idx
)->chan_scan_mode_bitmap
1006 |= MWIFIEX_DISABLE_CHAN_FILT
;
1008 if (user_scan_in
->chan_list
[chan_idx
].scan_time
) {
1009 scan_dur
= (u16
) user_scan_in
->
1010 chan_list
[chan_idx
].scan_time
;
1012 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
1013 scan_dur
= adapter
->passive_scan_time
;
1014 else if (*filtered_scan
)
1015 scan_dur
= adapter
->specific_scan_time
;
1017 scan_dur
= adapter
->active_scan_time
;
1020 (scan_chan_list
+ chan_idx
)->min_scan_time
=
1021 cpu_to_le16(scan_dur
);
1022 (scan_chan_list
+ chan_idx
)->max_scan_time
=
1023 cpu_to_le16(scan_dur
);
1026 /* Check if we are only scanning the current channel */
1027 if ((chan_idx
== 1) &&
1028 (user_scan_in
->chan_list
[0].chan_number
==
1029 priv
->curr_bss_params
.bss_descriptor
.channel
)) {
1030 *scan_current_only
= true;
1031 dev_dbg(adapter
->dev
,
1032 "info: Scan: Scanning current channel only\n");
1034 chan_num
= chan_idx
;
1036 dev_dbg(adapter
->dev
,
1037 "info: Scan: Creating full region channel list\n");
1038 chan_num
= mwifiex_scan_create_channel_list(priv
, user_scan_in
,
1044 * In associated state we will reduce the number of channels scanned per
1045 * scan command to avoid any traffic delay/loss. This number is decided
1046 * based on total number of channels to be scanned due to constraints
1047 * of command buffers.
1049 if (priv
->media_connected
) {
1050 if (chan_num
< MWIFIEX_LIMIT_1_CHANNEL_PER_SCAN_CMD
)
1051 *max_chan_per_scan
= 1;
1052 else if (chan_num
< MWIFIEX_LIMIT_2_CHANNELS_PER_SCAN_CMD
)
1053 *max_chan_per_scan
= 2;
1054 else if (chan_num
< MWIFIEX_LIMIT_3_CHANNELS_PER_SCAN_CMD
)
1055 *max_chan_per_scan
= 3;
1057 *max_chan_per_scan
= 4;
1062 * This function inspects the scan response buffer for pointers to
1065 * TLVs can be included at the end of the scan response BSS information.
1067 * Data in the buffer is parsed pointers to TLVs that can potentially
1068 * be passed back in the response.
1071 mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter
*adapter
,
1072 struct mwifiex_ie_types_data
*tlv
,
1073 u32 tlv_buf_size
, u32 req_tlv_type
,
1074 struct mwifiex_ie_types_data
**tlv_data
)
1076 struct mwifiex_ie_types_data
*current_tlv
;
1082 tlv_buf_left
= tlv_buf_size
;
1085 dev_dbg(adapter
->dev
, "info: SCAN_RESP: tlv_buf_size = %d\n",
1088 while (tlv_buf_left
>= sizeof(struct mwifiex_ie_types_header
)) {
1090 tlv_type
= le16_to_cpu(current_tlv
->header
.type
);
1091 tlv_len
= le16_to_cpu(current_tlv
->header
.len
);
1093 if (sizeof(tlv
->header
) + tlv_len
> tlv_buf_left
) {
1094 dev_err(adapter
->dev
, "SCAN_RESP: TLV buffer corrupt\n");
1098 if (req_tlv_type
== tlv_type
) {
1100 case TLV_TYPE_TSFTIMESTAMP
:
1101 dev_dbg(adapter
->dev
, "info: SCAN_RESP: TSF "
1102 "timestamp TLV, len = %d\n", tlv_len
);
1103 *tlv_data
= current_tlv
;
1105 case TLV_TYPE_CHANNELBANDLIST
:
1106 dev_dbg(adapter
->dev
, "info: SCAN_RESP: channel"
1107 " band list TLV, len = %d\n", tlv_len
);
1108 *tlv_data
= current_tlv
;
1111 dev_err(adapter
->dev
,
1112 "SCAN_RESP: unhandled TLV = %d\n",
1114 /* Give up, this seems corrupted */
1123 tlv_buf_left
-= (sizeof(tlv
->header
) + tlv_len
);
1125 (struct mwifiex_ie_types_data
*) (current_tlv
->data
+
1132 * This function parses provided beacon buffer and updates
1133 * respective fields in bss descriptor structure.
1135 int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter
*adapter
,
1136 struct mwifiex_bssdescriptor
*bss_entry
)
1140 struct ieee_types_fh_param_set
*fh_param_set
;
1141 struct ieee_types_ds_param_set
*ds_param_set
;
1142 struct ieee_types_cf_param_set
*cf_param_set
;
1143 struct ieee_types_ibss_param_set
*ibss_param_set
;
1150 u8 found_data_rate_ie
;
1152 struct ieee_types_vendor_specific
*vendor_ie
;
1153 const u8 wpa_oui
[4] = { 0x00, 0x50, 0xf2, 0x01 };
1154 const u8 wmm_oui
[4] = { 0x00, 0x50, 0xf2, 0x02 };
1156 found_data_rate_ie
= false;
1158 current_ptr
= bss_entry
->beacon_buf
;
1159 bytes_left
= bss_entry
->beacon_buf_size
;
1161 /* Process variable IE */
1162 while (bytes_left
>= 2) {
1163 element_id
= *current_ptr
;
1164 element_len
= *(current_ptr
+ 1);
1165 total_ie_len
= element_len
+ sizeof(struct ieee_types_header
);
1167 if (bytes_left
< total_ie_len
) {
1168 dev_err(adapter
->dev
, "err: InterpretIE: in processing"
1169 " IE, bytes left < IE length\n");
1172 switch (element_id
) {
1174 bss_entry
->ssid
.ssid_len
= element_len
;
1175 memcpy(bss_entry
->ssid
.ssid
, (current_ptr
+ 2),
1177 dev_dbg(adapter
->dev
,
1178 "info: InterpretIE: ssid: %-32s\n",
1179 bss_entry
->ssid
.ssid
);
1182 case WLAN_EID_SUPP_RATES
:
1183 memcpy(bss_entry
->data_rates
, current_ptr
+ 2,
1185 memcpy(bss_entry
->supported_rates
, current_ptr
+ 2,
1187 rate_size
= element_len
;
1188 found_data_rate_ie
= true;
1191 case WLAN_EID_FH_PARAMS
:
1193 (struct ieee_types_fh_param_set
*) current_ptr
;
1194 memcpy(&bss_entry
->phy_param_set
.fh_param_set
,
1196 sizeof(struct ieee_types_fh_param_set
));
1199 case WLAN_EID_DS_PARAMS
:
1201 (struct ieee_types_ds_param_set
*) current_ptr
;
1203 bss_entry
->channel
= ds_param_set
->current_chan
;
1205 memcpy(&bss_entry
->phy_param_set
.ds_param_set
,
1207 sizeof(struct ieee_types_ds_param_set
));
1210 case WLAN_EID_CF_PARAMS
:
1212 (struct ieee_types_cf_param_set
*) current_ptr
;
1213 memcpy(&bss_entry
->ss_param_set
.cf_param_set
,
1215 sizeof(struct ieee_types_cf_param_set
));
1218 case WLAN_EID_IBSS_PARAMS
:
1220 (struct ieee_types_ibss_param_set
*)
1222 memcpy(&bss_entry
->ss_param_set
.ibss_param_set
,
1224 sizeof(struct ieee_types_ibss_param_set
));
1227 case WLAN_EID_ERP_INFO
:
1228 bss_entry
->erp_flags
= *(current_ptr
+ 2);
1231 case WLAN_EID_PWR_CONSTRAINT
:
1232 bss_entry
->local_constraint
= *(current_ptr
+ 2);
1233 bss_entry
->sensed_11h
= true;
1236 case WLAN_EID_CHANNEL_SWITCH
:
1237 bss_entry
->chan_sw_ie_present
= true;
1238 case WLAN_EID_PWR_CAPABILITY
:
1239 case WLAN_EID_TPC_REPORT
:
1240 case WLAN_EID_QUIET
:
1241 bss_entry
->sensed_11h
= true;
1244 case WLAN_EID_EXT_SUPP_RATES
:
1246 * Only process extended supported rate
1247 * if data rate is already found.
1248 * Data rate IE should come before
1249 * extended supported rate IE
1251 if (found_data_rate_ie
) {
1252 if ((element_len
+ rate_size
) >
1253 MWIFIEX_SUPPORTED_RATES
)
1255 (MWIFIEX_SUPPORTED_RATES
-
1258 bytes_to_copy
= element_len
;
1260 rate
= (u8
*) bss_entry
->data_rates
;
1262 memcpy(rate
, current_ptr
+ 2, bytes_to_copy
);
1264 rate
= (u8
*) bss_entry
->supported_rates
;
1266 memcpy(rate
, current_ptr
+ 2, bytes_to_copy
);
1270 case WLAN_EID_VENDOR_SPECIFIC
:
1271 vendor_ie
= (struct ieee_types_vendor_specific
*)
1275 (vendor_ie
->vend_hdr
.oui
, wpa_oui
,
1277 bss_entry
->bcn_wpa_ie
=
1278 (struct ieee_types_vendor_specific
*)
1280 bss_entry
->wpa_offset
= (u16
)
1281 (current_ptr
- bss_entry
->beacon_buf
);
1282 } else if (!memcmp(vendor_ie
->vend_hdr
.oui
, wmm_oui
,
1285 sizeof(struct ieee_types_wmm_parameter
) ||
1287 sizeof(struct ieee_types_wmm_info
))
1289 * Only accept and copy the WMM IE if
1290 * it matches the size expected for the
1291 * WMM Info IE or the WMM Parameter IE.
1293 memcpy((u8
*) &bss_entry
->wmm_ie
,
1294 current_ptr
, total_ie_len
);
1298 bss_entry
->bcn_rsn_ie
=
1299 (struct ieee_types_generic
*) current_ptr
;
1300 bss_entry
->rsn_offset
= (u16
) (current_ptr
-
1301 bss_entry
->beacon_buf
);
1303 case WLAN_EID_BSS_AC_ACCESS_DELAY
:
1304 bss_entry
->bcn_wapi_ie
=
1305 (struct ieee_types_generic
*) current_ptr
;
1306 bss_entry
->wapi_offset
= (u16
) (current_ptr
-
1307 bss_entry
->beacon_buf
);
1309 case WLAN_EID_HT_CAPABILITY
:
1310 bss_entry
->bcn_ht_cap
= (struct ieee80211_ht_cap
*)
1312 sizeof(struct ieee_types_header
));
1313 bss_entry
->ht_cap_offset
= (u16
) (current_ptr
+
1314 sizeof(struct ieee_types_header
) -
1315 bss_entry
->beacon_buf
);
1317 case WLAN_EID_HT_OPERATION
:
1318 bss_entry
->bcn_ht_oper
=
1319 (struct ieee80211_ht_operation
*)(current_ptr
+
1320 sizeof(struct ieee_types_header
));
1321 bss_entry
->ht_info_offset
= (u16
) (current_ptr
+
1322 sizeof(struct ieee_types_header
) -
1323 bss_entry
->beacon_buf
);
1325 case WLAN_EID_VHT_CAPABILITY
:
1326 bss_entry
->disable_11ac
= false;
1327 bss_entry
->bcn_vht_cap
=
1328 (void *)(current_ptr
+
1329 sizeof(struct ieee_types_header
));
1330 bss_entry
->vht_cap_offset
=
1331 (u16
)((u8
*)bss_entry
->bcn_vht_cap
-
1332 bss_entry
->beacon_buf
);
1334 case WLAN_EID_VHT_OPERATION
:
1335 bss_entry
->bcn_vht_oper
=
1336 (void *)(current_ptr
+
1337 sizeof(struct ieee_types_header
));
1338 bss_entry
->vht_info_offset
=
1339 (u16
)((u8
*)bss_entry
->bcn_vht_oper
-
1340 bss_entry
->beacon_buf
);
1342 case WLAN_EID_BSS_COEX_2040
:
1343 bss_entry
->bcn_bss_co_2040
= current_ptr
+
1344 sizeof(struct ieee_types_header
);
1345 bss_entry
->bss_co_2040_offset
= (u16
) (current_ptr
+
1346 sizeof(struct ieee_types_header
) -
1347 bss_entry
->beacon_buf
);
1349 case WLAN_EID_EXT_CAPABILITY
:
1350 bss_entry
->bcn_ext_cap
= current_ptr
+
1351 sizeof(struct ieee_types_header
);
1352 bss_entry
->ext_cap_offset
= (u16
) (current_ptr
+
1353 sizeof(struct ieee_types_header
) -
1354 bss_entry
->beacon_buf
);
1356 case WLAN_EID_OPMODE_NOTIF
:
1357 bss_entry
->oper_mode
=
1358 (void *)(current_ptr
+
1359 sizeof(struct ieee_types_header
));
1360 bss_entry
->oper_mode_offset
=
1361 (u16
)((u8
*)bss_entry
->oper_mode
-
1362 bss_entry
->beacon_buf
);
1368 current_ptr
+= element_len
+ 2;
1370 /* Need to account for IE ID and IE Len */
1371 bytes_left
-= (element_len
+ 2);
1373 } /* while (bytes_left > 2) */
1378 * This function converts radio type scan parameter to a band configuration
1379 * to be used in join command.
1382 mwifiex_radio_type_to_band(u8 radio_type
)
1384 switch (radio_type
) {
1385 case HostCmd_SCAN_RADIO_TYPE_A
:
1387 case HostCmd_SCAN_RADIO_TYPE_BG
:
1394 * This is an internal function used to start a scan based on an input
1397 * This uses the input user scan configuration information when provided in
1398 * order to send the appropriate scan commands to firmware to populate or
1399 * update the internal driver scan table.
1401 int mwifiex_scan_networks(struct mwifiex_private
*priv
,
1402 const struct mwifiex_user_scan_cfg
*user_scan_in
)
1405 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1406 struct cmd_ctrl_node
*cmd_node
;
1407 union mwifiex_scan_cmd_config_tlv
*scan_cfg_out
;
1408 struct mwifiex_ie_types_chan_list_param_set
*chan_list_out
;
1409 struct mwifiex_chan_scan_param_set
*scan_chan_list
;
1411 u8 scan_current_chan_only
;
1412 u8 max_chan_per_scan
;
1413 unsigned long flags
;
1415 if (adapter
->scan_processing
) {
1416 dev_err(adapter
->dev
, "cmd: Scan already in process...\n");
1420 if (priv
->scan_block
) {
1421 dev_err(adapter
->dev
,
1422 "cmd: Scan is blocked during association...\n");
1426 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1427 adapter
->scan_processing
= true;
1428 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1430 scan_cfg_out
= kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv
),
1432 if (!scan_cfg_out
) {
1437 scan_chan_list
= kcalloc(MWIFIEX_USER_SCAN_CHAN_MAX
,
1438 sizeof(struct mwifiex_chan_scan_param_set
),
1440 if (!scan_chan_list
) {
1441 kfree(scan_cfg_out
);
1446 mwifiex_config_scan(priv
, user_scan_in
, &scan_cfg_out
->config
,
1447 &chan_list_out
, scan_chan_list
, &max_chan_per_scan
,
1448 &filtered_scan
, &scan_current_chan_only
);
1450 ret
= mwifiex_scan_channel_list(priv
, max_chan_per_scan
, filtered_scan
,
1451 &scan_cfg_out
->config
, chan_list_out
,
1454 /* Get scan command from scan_pending_q and put to cmd_pending_q */
1456 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1457 if (!list_empty(&adapter
->scan_pending_q
)) {
1458 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
1459 struct cmd_ctrl_node
, list
);
1460 list_del(&cmd_node
->list
);
1461 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1463 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
1465 queue_work(adapter
->workqueue
, &adapter
->main_work
);
1467 /* Perform internal scan synchronously */
1468 if (!priv
->scan_request
) {
1469 dev_dbg(adapter
->dev
, "wait internal scan\n");
1470 mwifiex_wait_queue_complete(adapter
, cmd_node
);
1473 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1478 kfree(scan_cfg_out
);
1479 kfree(scan_chan_list
);
1482 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1483 adapter
->scan_processing
= false;
1484 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1490 * This function prepares a scan command to be sent to the firmware.
1492 * This uses the scan command configuration sent to the command processing
1493 * module in command preparation stage to configure a scan command structure
1494 * to send to firmware.
1496 * The fixed fields specifying the BSS type and BSSID filters as well as a
1497 * variable number/length of TLVs are sent in the command to firmware.
1499 * Preparation also includes -
1500 * - Setting command ID, and proper size
1501 * - Ensuring correct endian-ness
1503 int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command
*cmd
,
1504 struct mwifiex_scan_cmd_config
*scan_cfg
)
1506 struct host_cmd_ds_802_11_scan
*scan_cmd
= &cmd
->params
.scan
;
1508 /* Set fixed field variables in scan command */
1509 scan_cmd
->bss_mode
= scan_cfg
->bss_mode
;
1510 memcpy(scan_cmd
->bssid
, scan_cfg
->specific_bssid
,
1511 sizeof(scan_cmd
->bssid
));
1512 memcpy(scan_cmd
->tlv_buffer
, scan_cfg
->tlv_buf
, scan_cfg
->tlv_buf_len
);
1514 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_SCAN
);
1516 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
1517 cmd
->size
= cpu_to_le16((u16
) (sizeof(scan_cmd
->bss_mode
)
1518 + sizeof(scan_cmd
->bssid
)
1519 + scan_cfg
->tlv_buf_len
+ S_DS_GEN
));
1525 * This function checks compatibility of requested network with current
1528 int mwifiex_check_network_compatibility(struct mwifiex_private
*priv
,
1529 struct mwifiex_bssdescriptor
*bss_desc
)
1536 if ((mwifiex_get_cfp(priv
, (u8
) bss_desc
->bss_band
,
1537 (u16
) bss_desc
->channel
, 0))) {
1538 switch (priv
->bss_mode
) {
1539 case NL80211_IFTYPE_STATION
:
1540 case NL80211_IFTYPE_ADHOC
:
1541 ret
= mwifiex_is_network_compatible(priv
, bss_desc
,
1544 dev_err(priv
->adapter
->dev
,
1545 "Incompatible network settings\n");
1555 static int mwifiex_update_curr_bss_params(struct mwifiex_private
*priv
,
1556 struct cfg80211_bss
*bss
)
1558 struct mwifiex_bssdescriptor
*bss_desc
;
1560 unsigned long flags
;
1562 /* Allocate and fill new bss descriptor */
1563 bss_desc
= kzalloc(sizeof(struct mwifiex_bssdescriptor
), GFP_KERNEL
);
1567 ret
= mwifiex_fill_new_bss_desc(priv
, bss
, bss_desc
);
1571 ret
= mwifiex_check_network_compatibility(priv
, bss_desc
);
1575 spin_lock_irqsave(&priv
->curr_bcn_buf_lock
, flags
);
1576 /* Make a copy of current BSSID descriptor */
1577 memcpy(&priv
->curr_bss_params
.bss_descriptor
, bss_desc
,
1578 sizeof(priv
->curr_bss_params
.bss_descriptor
));
1580 /* The contents of beacon_ie will be copied to its own buffer
1581 * in mwifiex_save_curr_bcn()
1583 mwifiex_save_curr_bcn(priv
);
1584 spin_unlock_irqrestore(&priv
->curr_bcn_buf_lock
, flags
);
1587 /* beacon_ie buffer was allocated in function
1588 * mwifiex_fill_new_bss_desc(). Free it now.
1590 kfree(bss_desc
->beacon_buf
);
1596 mwifiex_parse_single_response_buf(struct mwifiex_private
*priv
, u8
**bss_info
,
1597 u32
*bytes_left
, u64 fw_tsf
, u8
*radio_type
,
1598 bool ext_scan
, s32 rssi_val
)
1600 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1601 struct mwifiex_chan_freq_power
*cfp
;
1602 struct cfg80211_bss
*bss
;
1608 u16 beacon_size
= 0;
1612 u16 cap_info_bitmap
;
1615 struct mwifiex_fixed_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
1634 current_ptr
= *bss_info
;
1636 /* Advance the return beacon pointer past the current beacon */
1637 *bss_info
+= beacon_size
;
1638 *bytes_left
-= beacon_size
;
1640 curr_bcn_bytes
= beacon_size
;
1642 /* First 5 fields are bssid, RSSI(for legacy scan only),
1643 * time stamp, beacon interval, and capability information
1645 if (curr_bcn_bytes
< ETH_ALEN
+ sizeof(u8
) +
1646 sizeof(struct mwifiex_fixed_bcn_param
)) {
1647 dev_err(adapter
->dev
, "InterpretIE: not enough bytes left\n");
1651 memcpy(bssid
, current_ptr
, ETH_ALEN
);
1652 current_ptr
+= ETH_ALEN
;
1653 curr_bcn_bytes
-= ETH_ALEN
;
1656 rssi
= (s32
) *(u8
*)current_ptr
;
1657 rssi
= (-rssi
) * 100; /* Convert dBm to mBm */
1658 current_ptr
+= sizeof(u8
);
1659 curr_bcn_bytes
-= sizeof(u8
);
1660 dev_dbg(adapter
->dev
, "info: InterpretIE: RSSI=%d\n", rssi
);
1665 bcn_param
= (struct mwifiex_fixed_bcn_param
*)current_ptr
;
1666 current_ptr
+= sizeof(*bcn_param
);
1667 curr_bcn_bytes
-= sizeof(*bcn_param
);
1669 timestamp
= le64_to_cpu(bcn_param
->timestamp
);
1670 beacon_period
= le16_to_cpu(bcn_param
->beacon_period
);
1672 cap_info_bitmap
= le16_to_cpu(bcn_param
->cap_info_bitmap
);
1673 dev_dbg(adapter
->dev
, "info: InterpretIE: capabilities=0x%X\n",
1676 /* Rest of the current buffer are IE's */
1677 ie_buf
= current_ptr
;
1678 ie_len
= curr_bcn_bytes
;
1679 dev_dbg(adapter
->dev
, "info: InterpretIE: IELength for this AP = %d\n",
1682 while (curr_bcn_bytes
>= sizeof(struct ieee_types_header
)) {
1683 u8 element_id
, element_len
;
1685 element_id
= *current_ptr
;
1686 element_len
= *(current_ptr
+ 1);
1687 if (curr_bcn_bytes
< element_len
+
1688 sizeof(struct ieee_types_header
)) {
1689 dev_err(adapter
->dev
,
1690 "%s: bytes left < IE length\n", __func__
);
1693 if (element_id
== WLAN_EID_DS_PARAMS
) {
1694 channel
= *(current_ptr
+
1695 sizeof(struct ieee_types_header
));
1699 current_ptr
+= element_len
+ sizeof(struct ieee_types_header
);
1700 curr_bcn_bytes
-= element_len
+
1701 sizeof(struct ieee_types_header
);
1705 struct ieee80211_channel
*chan
;
1708 /* Skip entry if on csa closed channel */
1709 if (channel
== priv
->csa_chan
) {
1710 dev_dbg(adapter
->dev
,
1711 "Dropping entry on csa closed channel\n");
1717 band
= mwifiex_radio_type_to_band(*radio_type
&
1720 cfp
= mwifiex_get_cfp(priv
, band
, channel
, 0);
1722 freq
= cfp
? cfp
->freq
: 0;
1724 chan
= ieee80211_get_channel(priv
->wdev
->wiphy
, freq
);
1726 if (chan
&& !(chan
->flags
& IEEE80211_CHAN_DISABLED
)) {
1727 bss
= cfg80211_inform_bss(priv
->wdev
->wiphy
,
1728 chan
, bssid
, timestamp
,
1729 cap_info_bitmap
, beacon_period
,
1730 ie_buf
, ie_len
, rssi
, GFP_KERNEL
);
1731 bss_priv
= (struct mwifiex_bss_priv
*)bss
->priv
;
1732 bss_priv
->band
= band
;
1733 bss_priv
->fw_tsf
= fw_tsf
;
1734 if (priv
->media_connected
&&
1735 !memcmp(bssid
, priv
->curr_bss_params
.bss_descriptor
1736 .mac_address
, ETH_ALEN
))
1737 mwifiex_update_curr_bss_params(priv
, bss
);
1738 cfg80211_put_bss(priv
->wdev
->wiphy
, bss
);
1741 dev_dbg(adapter
->dev
, "missing BSS channel IE\n");
1747 static void mwifiex_check_next_scan_command(struct mwifiex_private
*priv
)
1749 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1750 struct cmd_ctrl_node
*cmd_node
;
1751 unsigned long flags
;
1753 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1754 if (list_empty(&adapter
->scan_pending_q
)) {
1755 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
1756 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1757 adapter
->scan_processing
= false;
1758 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1760 /* Need to indicate IOCTL complete */
1761 if (adapter
->curr_cmd
->wait_q_enabled
) {
1762 adapter
->cmd_wait_q
.status
= 0;
1763 if (!priv
->scan_request
) {
1764 dev_dbg(adapter
->dev
,
1765 "complete internal scan\n");
1766 mwifiex_complete_cmd(adapter
,
1770 if (priv
->report_scan_result
)
1771 priv
->report_scan_result
= false;
1773 if (priv
->scan_request
) {
1774 dev_dbg(adapter
->dev
, "info: notifying scan done\n");
1775 cfg80211_scan_done(priv
->scan_request
, 0);
1776 priv
->scan_request
= NULL
;
1778 priv
->scan_aborting
= false;
1779 dev_dbg(adapter
->dev
, "info: scan already aborted\n");
1782 if ((priv
->scan_aborting
&& !priv
->scan_request
) ||
1784 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1786 adapter
->scan_delay_cnt
= MWIFIEX_MAX_SCAN_DELAY_CNT
;
1787 mod_timer(&priv
->scan_delay_timer
, jiffies
);
1788 dev_dbg(priv
->adapter
->dev
,
1789 "info: %s: triggerring scan abort\n", __func__
);
1790 } else if (!mwifiex_wmm_lists_empty(adapter
) &&
1791 (priv
->scan_request
&& (priv
->scan_request
->flags
&
1792 NL80211_SCAN_FLAG_LOW_PRIORITY
))) {
1793 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1795 adapter
->scan_delay_cnt
= 1;
1796 mod_timer(&priv
->scan_delay_timer
, jiffies
+
1797 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC
));
1798 dev_dbg(priv
->adapter
->dev
,
1799 "info: %s: deferring scan\n", __func__
);
1801 /* Get scan command from scan_pending_q and put to
1804 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
1805 struct cmd_ctrl_node
, list
);
1806 list_del(&cmd_node
->list
);
1807 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1809 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
1818 * This function handles the command response of scan.
1820 * The response buffer for the scan command has the following
1823 * .-------------------------------------------------------------.
1824 * | Header (4 * sizeof(t_u16)): Standard command response hdr |
1825 * .-------------------------------------------------------------.
1826 * | BufSize (t_u16) : sizeof the BSS Description data |
1827 * .-------------------------------------------------------------.
1828 * | NumOfSet (t_u8) : Number of BSS Descs returned |
1829 * .-------------------------------------------------------------.
1830 * | BSSDescription data (variable, size given in BufSize) |
1831 * .-------------------------------------------------------------.
1832 * | TLV data (variable, size calculated using Header->Size, |
1833 * | BufSize and sizeof the fixed fields above) |
1834 * .-------------------------------------------------------------.
1836 int mwifiex_ret_802_11_scan(struct mwifiex_private
*priv
,
1837 struct host_cmd_ds_command
*resp
)
1840 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1841 struct host_cmd_ds_802_11_scan_rsp
*scan_rsp
;
1842 struct mwifiex_ie_types_data
*tlv_data
;
1843 struct mwifiex_ie_types_tsf_timestamp
*tsf_tlv
;
1849 struct mwifiex_ie_types_chan_band_list_param_set
*chan_band_tlv
;
1850 struct chan_band_param_set
*chan_band
;
1855 is_bgscan_resp
= (le16_to_cpu(resp
->command
)
1856 == HostCmd_CMD_802_11_BG_SCAN_QUERY
);
1858 scan_rsp
= &resp
->params
.bg_scan_query_resp
.scan_resp
;
1860 scan_rsp
= &resp
->params
.scan_resp
;
1863 if (scan_rsp
->number_of_sets
> MWIFIEX_MAX_AP
) {
1864 dev_err(adapter
->dev
, "SCAN_RESP: too many AP returned (%d)\n",
1865 scan_rsp
->number_of_sets
);
1867 goto check_next_scan
;
1870 /* Check csa channel expiry before parsing scan response */
1871 mwifiex_11h_get_csa_closed_channel(priv
);
1873 bytes_left
= le16_to_cpu(scan_rsp
->bss_descript_size
);
1874 dev_dbg(adapter
->dev
, "info: SCAN_RESP: bss_descript_size %d\n",
1877 scan_resp_size
= le16_to_cpu(resp
->size
);
1879 dev_dbg(adapter
->dev
,
1880 "info: SCAN_RESP: returned %d APs before parsing\n",
1881 scan_rsp
->number_of_sets
);
1883 bss_info
= scan_rsp
->bss_desc_and_tlv_buffer
;
1886 * The size of the TLV buffer is equal to the entire command response
1887 * size (scan_resp_size) minus the fixed fields (sizeof()'s), the
1888 * BSS Descriptions (bss_descript_size as bytesLef) and the command
1889 * response header (S_DS_GEN)
1891 tlv_buf_size
= scan_resp_size
- (bytes_left
1892 + sizeof(scan_rsp
->bss_descript_size
)
1893 + sizeof(scan_rsp
->number_of_sets
)
1896 tlv_data
= (struct mwifiex_ie_types_data
*) (scan_rsp
->
1897 bss_desc_and_tlv_buffer
+
1900 /* Search the TLV buffer space in the scan response for any valid
1902 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter
, tlv_data
, tlv_buf_size
,
1903 TLV_TYPE_TSFTIMESTAMP
,
1904 (struct mwifiex_ie_types_data
**)
1907 /* Search the TLV buffer space in the scan response for any valid
1909 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter
, tlv_data
, tlv_buf_size
,
1910 TLV_TYPE_CHANNELBANDLIST
,
1911 (struct mwifiex_ie_types_data
**)
1914 for (idx
= 0; idx
< scan_rsp
->number_of_sets
&& bytes_left
; idx
++) {
1916 * If the TSF TLV was appended to the scan results, save this
1917 * entry's TSF value in the fw_tsf field. It is the firmware's
1918 * TSF value at the time the beacon or probe response was
1922 memcpy(&fw_tsf
, &tsf_tlv
->tsf_data
[idx
* TSF_DATA_SIZE
],
1925 if (chan_band_tlv
) {
1926 chan_band
= &chan_band_tlv
->chan_band_param
[idx
];
1927 radio_type
= &chan_band
->radio_type
;
1932 ret
= mwifiex_parse_single_response_buf(priv
, &bss_info
,
1934 le64_to_cpu(fw_tsf
),
1935 radio_type
, false, 0);
1937 goto check_next_scan
;
1941 mwifiex_check_next_scan_command(priv
);
1946 * This function prepares an extended scan command to be sent to the firmware
1948 * This uses the scan command configuration sent to the command processing
1949 * module in command preparation stage to configure a extended scan command
1950 * structure to send to firmware.
1952 int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private
*priv
,
1953 struct host_cmd_ds_command
*cmd
,
1956 struct host_cmd_ds_802_11_scan_ext
*ext_scan
= &cmd
->params
.ext_scan
;
1957 struct mwifiex_scan_cmd_config
*scan_cfg
= data_buf
;
1959 memcpy(ext_scan
->tlv_buffer
, scan_cfg
->tlv_buf
, scan_cfg
->tlv_buf_len
);
1961 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_SCAN_EXT
);
1963 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
1964 cmd
->size
= cpu_to_le16((u16
)(sizeof(ext_scan
->reserved
)
1965 + scan_cfg
->tlv_buf_len
+ S_DS_GEN
));
1970 /* This function handles the command response of extended scan */
1971 int mwifiex_ret_802_11_scan_ext(struct mwifiex_private
*priv
)
1973 dev_dbg(priv
->adapter
->dev
, "info: EXT scan returns successfully\n");
1977 /* This function This function handles the event extended scan report. It
1978 * parses extended scan results and informs to cfg80211 stack.
1980 int mwifiex_handle_event_ext_scan_report(struct mwifiex_private
*priv
,
1984 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1986 u32 bytes_left
, bytes_left_for_tlv
, idx
;
1988 struct mwifiex_ie_types_data
*tlv
;
1989 struct mwifiex_ie_types_bss_scan_rsp
*scan_rsp_tlv
;
1990 struct mwifiex_ie_types_bss_scan_info
*scan_info_tlv
;
1994 struct mwifiex_event_scan_result
*event_scan
= buf
;
1995 u8 num_of_set
= event_scan
->num_of_set
;
1996 u8
*scan_resp
= buf
+ sizeof(struct mwifiex_event_scan_result
);
1997 u16 scan_resp_size
= le16_to_cpu(event_scan
->buf_size
);
1999 if (num_of_set
> MWIFIEX_MAX_AP
) {
2000 dev_err(adapter
->dev
,
2001 "EXT_SCAN: Invalid number of AP returned (%d)!!\n",
2004 goto check_next_scan
;
2007 bytes_left
= scan_resp_size
;
2008 dev_dbg(adapter
->dev
,
2009 "EXT_SCAN: size %d, returned %d APs...",
2010 scan_resp_size
, num_of_set
);
2012 tlv
= (struct mwifiex_ie_types_data
*)scan_resp
;
2014 for (idx
= 0; idx
< num_of_set
&& bytes_left
; idx
++) {
2015 type
= le16_to_cpu(tlv
->header
.type
);
2016 len
= le16_to_cpu(tlv
->header
.len
);
2017 if (bytes_left
< sizeof(struct mwifiex_ie_types_header
) + len
) {
2018 dev_err(adapter
->dev
, "EXT_SCAN: Error bytes left < TLV length\n");
2021 scan_rsp_tlv
= NULL
;
2022 scan_info_tlv
= NULL
;
2023 bytes_left_for_tlv
= bytes_left
;
2025 /* BSS response TLV with beacon or probe response buffer
2026 * at the initial position of each descriptor
2028 if (type
!= TLV_TYPE_BSS_SCAN_RSP
)
2031 bss_info
= (u8
*)tlv
;
2032 scan_rsp_tlv
= (struct mwifiex_ie_types_bss_scan_rsp
*)tlv
;
2033 tlv
= (struct mwifiex_ie_types_data
*)(tlv
->data
+ len
);
2034 bytes_left_for_tlv
-=
2035 (len
+ sizeof(struct mwifiex_ie_types_header
));
2037 while (bytes_left_for_tlv
>=
2038 sizeof(struct mwifiex_ie_types_header
) &&
2039 le16_to_cpu(tlv
->header
.type
) != TLV_TYPE_BSS_SCAN_RSP
) {
2040 type
= le16_to_cpu(tlv
->header
.type
);
2041 len
= le16_to_cpu(tlv
->header
.len
);
2042 if (bytes_left_for_tlv
<
2043 sizeof(struct mwifiex_ie_types_header
) + len
) {
2044 dev_err(adapter
->dev
,
2045 "EXT_SCAN: Error in processing TLV, bytes left < TLV length\n");
2046 scan_rsp_tlv
= NULL
;
2047 bytes_left_for_tlv
= 0;
2051 case TLV_TYPE_BSS_SCAN_INFO
:
2053 (struct mwifiex_ie_types_bss_scan_info
*)tlv
;
2055 sizeof(struct mwifiex_ie_types_bss_scan_info
) -
2056 sizeof(struct mwifiex_ie_types_header
)) {
2057 bytes_left_for_tlv
= 0;
2064 tlv
= (struct mwifiex_ie_types_data
*)(tlv
->data
+ len
);
2066 (len
+ sizeof(struct mwifiex_ie_types_header
));
2067 bytes_left_for_tlv
-=
2068 (len
+ sizeof(struct mwifiex_ie_types_header
));
2074 /* Advance pointer to the beacon buffer length and
2075 * update the bytes count so that the function
2076 * wlan_interpret_bss_desc_with_ie() can handle the
2077 * scan buffer withut any change
2079 bss_info
+= sizeof(u16
);
2080 bytes_left
-= sizeof(u16
);
2082 if (scan_info_tlv
) {
2083 rssi
= (s32
)(s16
)(le16_to_cpu(scan_info_tlv
->rssi
));
2084 rssi
*= 100; /* Convert dBm to mBm */
2085 dev_dbg(adapter
->dev
,
2086 "info: InterpretIE: RSSI=%d\n", rssi
);
2087 fw_tsf
= le64_to_cpu(scan_info_tlv
->tsf
);
2088 radio_type
= &scan_info_tlv
->radio_type
;
2092 ret
= mwifiex_parse_single_response_buf(priv
, &bss_info
,
2093 &bytes_left
, fw_tsf
,
2094 radio_type
, true, rssi
);
2096 goto check_next_scan
;
2100 if (!event_scan
->more_event
)
2101 mwifiex_check_next_scan_command(priv
);
2107 * This function prepares command for background scan query.
2109 * Preparation includes -
2110 * - Setting command ID and proper size
2111 * - Setting background scan flush parameter
2112 * - Ensuring correct endian-ness
2114 int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command
*cmd
)
2116 struct host_cmd_ds_802_11_bg_scan_query
*bg_query
=
2117 &cmd
->params
.bg_scan_query
;
2119 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY
);
2120 cmd
->size
= cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query
)
2123 bg_query
->flush
= 1;
2129 * This function inserts scan command node to the scan pending queue.
2132 mwifiex_queue_scan_cmd(struct mwifiex_private
*priv
,
2133 struct cmd_ctrl_node
*cmd_node
)
2135 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2136 unsigned long flags
;
2138 cmd_node
->wait_q_enabled
= true;
2139 cmd_node
->condition
= &adapter
->scan_wait_q_woken
;
2140 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
2141 list_add_tail(&cmd_node
->list
, &adapter
->scan_pending_q
);
2142 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
2146 * This function sends a scan command for all available channels to the
2147 * firmware, filtered on a specific SSID.
2149 static int mwifiex_scan_specific_ssid(struct mwifiex_private
*priv
,
2150 struct cfg80211_ssid
*req_ssid
)
2152 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2154 struct mwifiex_user_scan_cfg
*scan_cfg
;
2156 if (adapter
->scan_processing
) {
2157 dev_err(adapter
->dev
, "cmd: Scan already in process...\n");
2161 if (priv
->scan_block
) {
2162 dev_err(adapter
->dev
,
2163 "cmd: Scan is blocked during association...\n");
2167 scan_cfg
= kzalloc(sizeof(struct mwifiex_user_scan_cfg
), GFP_KERNEL
);
2171 scan_cfg
->ssid_list
= req_ssid
;
2172 scan_cfg
->num_ssids
= 1;
2174 ret
= mwifiex_scan_networks(priv
, scan_cfg
);
2181 * Sends IOCTL request to start a scan.
2183 * This function allocates the IOCTL request buffer, fills it
2184 * with requisite parameters and calls the IOCTL handler.
2186 * Scan command can be issued for both normal scan and specific SSID
2187 * scan, depending upon whether an SSID is provided or not.
2189 int mwifiex_request_scan(struct mwifiex_private
*priv
,
2190 struct cfg80211_ssid
*req_ssid
)
2194 if (down_interruptible(&priv
->async_sem
)) {
2195 dev_err(priv
->adapter
->dev
, "%s: acquire semaphore\n",
2200 priv
->adapter
->scan_wait_q_woken
= false;
2202 if (req_ssid
&& req_ssid
->ssid_len
!= 0)
2203 /* Specific SSID scan */
2204 ret
= mwifiex_scan_specific_ssid(priv
, req_ssid
);
2207 ret
= mwifiex_scan_networks(priv
, NULL
);
2209 up(&priv
->async_sem
);
2215 * This function appends the vendor specific IE TLV to a buffer.
2218 mwifiex_cmd_append_vsie_tlv(struct mwifiex_private
*priv
,
2219 u16 vsie_mask
, u8
**buffer
)
2221 int id
, ret_len
= 0;
2222 struct mwifiex_ie_types_vendor_param_set
*vs_param_set
;
2230 * Traverse through the saved vendor specific IE array and append
2231 * the selected(scan/assoc/adhoc) IE as TLV to the command
2233 for (id
= 0; id
< MWIFIEX_MAX_VSIE_NUM
; id
++) {
2234 if (priv
->vs_ie
[id
].mask
& vsie_mask
) {
2236 (struct mwifiex_ie_types_vendor_param_set
*)
2238 vs_param_set
->header
.type
=
2239 cpu_to_le16(TLV_TYPE_PASSTHROUGH
);
2240 vs_param_set
->header
.len
=
2241 cpu_to_le16((((u16
) priv
->vs_ie
[id
].ie
[1])
2243 memcpy(vs_param_set
->ie
, priv
->vs_ie
[id
].ie
,
2244 le16_to_cpu(vs_param_set
->header
.len
));
2245 *buffer
+= le16_to_cpu(vs_param_set
->header
.len
) +
2246 sizeof(struct mwifiex_ie_types_header
);
2247 ret_len
+= le16_to_cpu(vs_param_set
->header
.len
) +
2248 sizeof(struct mwifiex_ie_types_header
);
2255 * This function saves a beacon buffer of the current BSS descriptor.
2257 * The current beacon buffer is saved so that it can be restored in the
2258 * following cases that makes the beacon buffer not to contain the current
2259 * ssid's beacon buffer.
2260 * - The current ssid was not found somehow in the last scan.
2261 * - The current ssid was the last entry of the scan table and overloaded.
2264 mwifiex_save_curr_bcn(struct mwifiex_private
*priv
)
2266 struct mwifiex_bssdescriptor
*curr_bss
=
2267 &priv
->curr_bss_params
.bss_descriptor
;
2269 if (!curr_bss
->beacon_buf_size
)
2272 /* allocate beacon buffer at 1st time; or if it's size has changed */
2273 if (!priv
->curr_bcn_buf
||
2274 priv
->curr_bcn_size
!= curr_bss
->beacon_buf_size
) {
2275 priv
->curr_bcn_size
= curr_bss
->beacon_buf_size
;
2277 kfree(priv
->curr_bcn_buf
);
2278 priv
->curr_bcn_buf
= kmalloc(curr_bss
->beacon_buf_size
,
2280 if (!priv
->curr_bcn_buf
)
2284 memcpy(priv
->curr_bcn_buf
, curr_bss
->beacon_buf
,
2285 curr_bss
->beacon_buf_size
);
2286 dev_dbg(priv
->adapter
->dev
, "info: current beacon saved %d\n",
2287 priv
->curr_bcn_size
);
2289 curr_bss
->beacon_buf
= priv
->curr_bcn_buf
;
2291 /* adjust the pointers in the current BSS descriptor */
2292 if (curr_bss
->bcn_wpa_ie
)
2293 curr_bss
->bcn_wpa_ie
=
2294 (struct ieee_types_vendor_specific
*)
2295 (curr_bss
->beacon_buf
+
2296 curr_bss
->wpa_offset
);
2298 if (curr_bss
->bcn_rsn_ie
)
2299 curr_bss
->bcn_rsn_ie
= (struct ieee_types_generic
*)
2300 (curr_bss
->beacon_buf
+
2301 curr_bss
->rsn_offset
);
2303 if (curr_bss
->bcn_ht_cap
)
2304 curr_bss
->bcn_ht_cap
= (struct ieee80211_ht_cap
*)
2305 (curr_bss
->beacon_buf
+
2306 curr_bss
->ht_cap_offset
);
2308 if (curr_bss
->bcn_ht_oper
)
2309 curr_bss
->bcn_ht_oper
= (struct ieee80211_ht_operation
*)
2310 (curr_bss
->beacon_buf
+
2311 curr_bss
->ht_info_offset
);
2313 if (curr_bss
->bcn_vht_cap
)
2314 curr_bss
->bcn_ht_cap
= (void *)(curr_bss
->beacon_buf
+
2315 curr_bss
->vht_cap_offset
);
2317 if (curr_bss
->bcn_vht_oper
)
2318 curr_bss
->bcn_ht_oper
= (void *)(curr_bss
->beacon_buf
+
2319 curr_bss
->vht_info_offset
);
2321 if (curr_bss
->bcn_bss_co_2040
)
2322 curr_bss
->bcn_bss_co_2040
=
2323 (curr_bss
->beacon_buf
+ curr_bss
->bss_co_2040_offset
);
2325 if (curr_bss
->bcn_ext_cap
)
2326 curr_bss
->bcn_ext_cap
= curr_bss
->beacon_buf
+
2327 curr_bss
->ext_cap_offset
;
2329 if (curr_bss
->oper_mode
)
2330 curr_bss
->oper_mode
= (void *)(curr_bss
->beacon_buf
+
2331 curr_bss
->oper_mode_offset
);
2335 * This function frees the current BSS descriptor beacon buffer.
2338 mwifiex_free_curr_bcn(struct mwifiex_private
*priv
)
2340 kfree(priv
->curr_bcn_buf
);
2341 priv
->curr_bcn_buf
= NULL
;