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
)
594 struct mwifiex_adapter
*adapter
= priv
->adapter
;
596 struct mwifiex_chan_scan_param_set
*tmp_chan_list
;
597 struct mwifiex_chan_scan_param_set
*start_chan
;
598 struct cmd_ctrl_node
*cmd_node
, *tmp_node
;
600 u32 tlv_idx
, rates_size
, cmd_no
;
605 if (!scan_cfg_out
|| !chan_tlv_out
|| !scan_chan_list
) {
606 dev_dbg(priv
->adapter
->dev
,
607 "info: Scan: Null detect: %p, %p, %p\n",
608 scan_cfg_out
, chan_tlv_out
, scan_chan_list
);
612 /* Check csa channel expiry before preparing scan list */
613 mwifiex_11h_get_csa_closed_channel(priv
);
615 chan_tlv_out
->header
.type
= cpu_to_le16(TLV_TYPE_CHANLIST
);
617 /* Set the temp channel struct pointer to the start of the desired
619 tmp_chan_list
= scan_chan_list
;
621 /* Loop through the desired channel list, sending a new firmware scan
622 commands for each max_chan_per_scan channels (or for 1,6,11
623 individually if configured accordingly) */
624 while (tmp_chan_list
->chan_number
) {
629 chan_tlv_out
->header
.len
= 0;
630 start_chan
= tmp_chan_list
;
634 * Construct the Channel TLV for the scan command. Continue to
635 * insert channel TLVs until:
636 * - the tlv_idx hits the maximum configured per scan command
637 * - the next channel to insert is 0 (end of desired channel
639 * - done_early is set (controlling individual scanning of
642 while (tlv_idx
< max_chan_per_scan
&&
643 tmp_chan_list
->chan_number
&& !done_early
) {
645 if (tmp_chan_list
->chan_number
== priv
->csa_chan
) {
650 radio_type
= tmp_chan_list
->radio_type
;
651 dev_dbg(priv
->adapter
->dev
,
652 "info: Scan: Chan(%3d), Radio(%d),"
653 " Mode(%d, %d), Dur(%d)\n",
654 tmp_chan_list
->chan_number
,
655 tmp_chan_list
->radio_type
,
656 tmp_chan_list
->chan_scan_mode_bitmap
657 & MWIFIEX_PASSIVE_SCAN
,
658 (tmp_chan_list
->chan_scan_mode_bitmap
659 & MWIFIEX_DISABLE_CHAN_FILT
) >> 1,
660 le16_to_cpu(tmp_chan_list
->max_scan_time
));
662 /* Copy the current channel TLV to the command being
664 memcpy(chan_tlv_out
->chan_scan_param
+ tlv_idx
,
666 sizeof(chan_tlv_out
->chan_scan_param
));
668 /* Increment the TLV header length by the size
670 le16_add_cpu(&chan_tlv_out
->header
.len
,
671 sizeof(chan_tlv_out
->chan_scan_param
));
674 * The tlv buffer length is set to the number of bytes
675 * of the between the channel tlv pointer and the start
676 * of the tlv buffer. This compensates for any TLVs
677 * that were appended before the channel list.
679 scan_cfg_out
->tlv_buf_len
= (u32
) ((u8
*) chan_tlv_out
-
680 scan_cfg_out
->tlv_buf
);
682 /* Add the size of the channel tlv header and the data
684 scan_cfg_out
->tlv_buf_len
+=
685 (sizeof(chan_tlv_out
->header
)
686 + le16_to_cpu(chan_tlv_out
->header
.len
));
688 /* Increment the index to the channel tlv we are
692 /* Count the total scan time per command */
694 le16_to_cpu(tmp_chan_list
->max_scan_time
);
698 /* Stop the loop if the *current* channel is in the
699 1,6,11 set and we are not filtering on a BSSID
701 if (!filtered_scan
&&
702 (tmp_chan_list
->chan_number
== 1 ||
703 tmp_chan_list
->chan_number
== 6 ||
704 tmp_chan_list
->chan_number
== 11))
707 /* Increment the tmp pointer to the next channel to
711 /* Stop the loop if the *next* channel is in the 1,6,11
712 set. This will cause it to be the only channel
713 scanned on the next interation */
714 if (!filtered_scan
&&
715 (tmp_chan_list
->chan_number
== 1 ||
716 tmp_chan_list
->chan_number
== 6 ||
717 tmp_chan_list
->chan_number
== 11))
721 /* The total scan time should be less than scan command timeout
723 if (total_scan_time
> MWIFIEX_MAX_TOTAL_SCAN_TIME
) {
724 dev_err(priv
->adapter
->dev
, "total scan time %dms"
725 " is over limit (%dms), scan skipped\n",
726 total_scan_time
, MWIFIEX_MAX_TOTAL_SCAN_TIME
);
731 rates_size
= mwifiex_append_rate_tlv(priv
, scan_cfg_out
,
734 priv
->adapter
->scan_channels
= start_chan
;
736 /* Send the scan command to the firmware with the specified
738 if (priv
->adapter
->ext_scan
)
739 cmd_no
= HostCmd_CMD_802_11_SCAN_EXT
;
741 cmd_no
= HostCmd_CMD_802_11_SCAN
;
743 ret
= mwifiex_send_cmd(priv
, cmd_no
, HostCmd_ACT_GEN_SET
,
744 0, scan_cfg_out
, false);
746 /* rate IE is updated per scan command but same starting
747 * pointer is used each time so that rate IE from earlier
748 * scan_cfg_out->buf is overwritten with new one.
750 scan_cfg_out
->tlv_buf_len
-=
751 sizeof(struct mwifiex_ie_types_header
) + rates_size
;
754 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
755 list_for_each_entry_safe(cmd_node
, tmp_node
,
756 &adapter
->scan_pending_q
,
758 list_del(&cmd_node
->list
);
759 cmd_node
->wait_q_enabled
= false;
760 mwifiex_insert_cmd_to_free_q(adapter
, cmd_node
);
762 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
775 * This function constructs a scan command configuration structure to use
778 * Application layer or other functions can invoke network scanning
779 * with a scan configuration supplied in a user scan configuration structure.
780 * This structure is used as the basis of one or many scan command configuration
781 * commands that are sent to the command processing module and eventually to the
784 * This function creates a scan command configuration structure based on the
785 * following user supplied parameters (if present):
788 * - Number of Probes to be sent
791 * If the SSID or BSSID filter is not present, the filter is disabled/cleared.
792 * If the number of probes is not set, adapter default setting is used.
795 mwifiex_config_scan(struct mwifiex_private
*priv
,
796 const struct mwifiex_user_scan_cfg
*user_scan_in
,
797 struct mwifiex_scan_cmd_config
*scan_cfg_out
,
798 struct mwifiex_ie_types_chan_list_param_set
**chan_list_out
,
799 struct mwifiex_chan_scan_param_set
*scan_chan_list
,
800 u8
*max_chan_per_scan
, u8
*filtered_scan
,
801 u8
*scan_current_only
)
803 struct mwifiex_adapter
*adapter
= priv
->adapter
;
804 struct mwifiex_ie_types_num_probes
*num_probes_tlv
;
805 struct mwifiex_ie_types_wildcard_ssid_params
*wildcard_ssid_tlv
;
806 struct mwifiex_ie_types_bssid_list
*bssid_tlv
;
818 struct mwifiex_ie_types_htcap
*ht_cap
;
820 /* The tlv_buf_len is calculated for each scan command. The TLVs added
821 in this routine will be preserved since the routine that sends the
822 command will append channelTLVs at *chan_list_out. The difference
823 between the *chan_list_out and the tlv_buf start will be used to
824 calculate the size of anything we add in this routine. */
825 scan_cfg_out
->tlv_buf_len
= 0;
827 /* Running tlv pointer. Assigned to chan_list_out at end of function
828 so later routines know where channels can be added to the command
830 tlv_pos
= scan_cfg_out
->tlv_buf
;
832 /* Initialize the scan as un-filtered; the flag is later set to TRUE
833 below if a SSID or BSSID filter is sent in the command */
834 *filtered_scan
= false;
836 /* Initialize the scan as not being only on the current channel. If
837 the channel list is customized, only contains one channel, and is
838 the active channel, this is set true and data flow is not halted. */
839 *scan_current_only
= false;
843 /* Default the ssid_filter flag to TRUE, set false under
844 certain wildcard conditions and qualified by the existence
845 of an SSID list before marking the scan as filtered */
848 /* Set the BSS type scan filter, use Adapter setting if
850 scan_cfg_out
->bss_mode
=
851 (user_scan_in
->bss_mode
? (u8
) user_scan_in
->
852 bss_mode
: (u8
) adapter
->scan_mode
);
854 /* Set the number of probes to send, use Adapter setting
857 (user_scan_in
->num_probes
? user_scan_in
->
858 num_probes
: adapter
->scan_probes
);
861 * Set the BSSID filter to the incoming configuration,
862 * if non-zero. If not set, it will remain disabled
865 memcpy(scan_cfg_out
->specific_bssid
,
866 user_scan_in
->specific_bssid
,
867 sizeof(scan_cfg_out
->specific_bssid
));
869 if (adapter
->ext_scan
&&
870 !is_zero_ether_addr(scan_cfg_out
->specific_bssid
)) {
872 (struct mwifiex_ie_types_bssid_list
*)tlv_pos
;
873 bssid_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_BSSID
);
874 bssid_tlv
->header
.len
= cpu_to_le16(ETH_ALEN
);
875 memcpy(bssid_tlv
->bssid
, user_scan_in
->specific_bssid
,
877 tlv_pos
+= sizeof(struct mwifiex_ie_types_bssid_list
);
880 for (i
= 0; i
< user_scan_in
->num_ssids
; i
++) {
881 ssid_len
= user_scan_in
->ssid_list
[i
].ssid_len
;
884 (struct mwifiex_ie_types_wildcard_ssid_params
*)
886 wildcard_ssid_tlv
->header
.type
=
887 cpu_to_le16(TLV_TYPE_WILDCARDSSID
);
888 wildcard_ssid_tlv
->header
.len
= cpu_to_le16(
889 (u16
) (ssid_len
+ sizeof(wildcard_ssid_tlv
->
893 * max_ssid_length = 0 tells firmware to perform
894 * specific scan for the SSID filled, whereas
895 * max_ssid_length = IEEE80211_MAX_SSID_LEN is for
899 wildcard_ssid_tlv
->max_ssid_length
= 0;
901 wildcard_ssid_tlv
->max_ssid_length
=
902 IEEE80211_MAX_SSID_LEN
;
904 memcpy(wildcard_ssid_tlv
->ssid
,
905 user_scan_in
->ssid_list
[i
].ssid
, ssid_len
);
907 tlv_pos
+= (sizeof(wildcard_ssid_tlv
->header
)
908 + le16_to_cpu(wildcard_ssid_tlv
->header
.len
));
910 dev_dbg(adapter
->dev
, "info: scan: ssid[%d]: %s, %d\n",
911 i
, wildcard_ssid_tlv
->ssid
,
912 wildcard_ssid_tlv
->max_ssid_length
);
914 /* Empty wildcard ssid with a maxlen will match many or
915 potentially all SSIDs (maxlen == 32), therefore do
916 not treat the scan as
918 if (!ssid_len
&& wildcard_ssid_tlv
->max_ssid_length
)
923 * The default number of channels sent in the command is low to
924 * ensure the response buffer from the firmware does not
925 * truncate scan results. That is not an issue with an SSID
926 * or BSSID filter applied to the scan results in the firmware.
928 if ((i
&& ssid_filter
) ||
929 !is_zero_ether_addr(scan_cfg_out
->specific_bssid
))
930 *filtered_scan
= true;
932 scan_cfg_out
->bss_mode
= (u8
) adapter
->scan_mode
;
933 num_probes
= adapter
->scan_probes
;
937 * If a specific BSSID or SSID is used, the number of channels in the
938 * scan command will be increased to the absolute maximum.
941 *max_chan_per_scan
= MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN
;
943 *max_chan_per_scan
= MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD
;
945 /* If the input config or adapter has the number of Probes set,
949 dev_dbg(adapter
->dev
, "info: scan: num_probes = %d\n",
952 num_probes_tlv
= (struct mwifiex_ie_types_num_probes
*) tlv_pos
;
953 num_probes_tlv
->header
.type
= cpu_to_le16(TLV_TYPE_NUMPROBES
);
954 num_probes_tlv
->header
.len
=
955 cpu_to_le16(sizeof(num_probes_tlv
->num_probes
));
956 num_probes_tlv
->num_probes
= cpu_to_le16((u16
) num_probes
);
958 tlv_pos
+= sizeof(num_probes_tlv
->header
) +
959 le16_to_cpu(num_probes_tlv
->header
.len
);
963 if (ISSUPP_11NENABLED(priv
->adapter
->fw_cap_info
) &&
964 (priv
->adapter
->config_bands
& BAND_GN
||
965 priv
->adapter
->config_bands
& BAND_AN
)) {
966 ht_cap
= (struct mwifiex_ie_types_htcap
*) tlv_pos
;
967 memset(ht_cap
, 0, sizeof(struct mwifiex_ie_types_htcap
));
968 ht_cap
->header
.type
= cpu_to_le16(WLAN_EID_HT_CAPABILITY
);
970 cpu_to_le16(sizeof(struct ieee80211_ht_cap
));
972 mwifiex_band_to_radio_type(priv
->adapter
->config_bands
);
973 mwifiex_fill_cap_info(priv
, radio_type
, &ht_cap
->ht_cap
);
974 tlv_pos
+= sizeof(struct mwifiex_ie_types_htcap
);
977 /* Append vendor specific IE TLV */
978 mwifiex_cmd_append_vsie_tlv(priv
, MWIFIEX_VSIE_MASK_SCAN
, &tlv_pos
);
981 * Set the output for the channel TLV to the address in the tlv buffer
982 * past any TLVs that were added in this function (SSID, num_probes).
983 * Channel TLVs will be added past this for each scan command,
984 * preserving the TLVs that were previously added.
987 (struct mwifiex_ie_types_chan_list_param_set
*) tlv_pos
;
989 if (user_scan_in
&& user_scan_in
->chan_list
[0].chan_number
) {
991 dev_dbg(adapter
->dev
, "info: Scan: Using supplied channel list\n");
994 chan_idx
< MWIFIEX_USER_SCAN_CHAN_MAX
&&
995 user_scan_in
->chan_list
[chan_idx
].chan_number
;
998 channel
= user_scan_in
->chan_list
[chan_idx
].chan_number
;
999 (scan_chan_list
+ chan_idx
)->chan_number
= channel
;
1002 user_scan_in
->chan_list
[chan_idx
].radio_type
;
1003 (scan_chan_list
+ chan_idx
)->radio_type
= radio_type
;
1005 scan_type
= user_scan_in
->chan_list
[chan_idx
].scan_type
;
1007 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
1009 chan_idx
)->chan_scan_mode_bitmap
1010 |= MWIFIEX_PASSIVE_SCAN
;
1013 chan_idx
)->chan_scan_mode_bitmap
1014 &= ~MWIFIEX_PASSIVE_SCAN
;
1018 chan_idx
)->chan_scan_mode_bitmap
1019 |= MWIFIEX_DISABLE_CHAN_FILT
;
1021 if (user_scan_in
->chan_list
[chan_idx
].scan_time
) {
1022 scan_dur
= (u16
) user_scan_in
->
1023 chan_list
[chan_idx
].scan_time
;
1025 if (scan_type
== MWIFIEX_SCAN_TYPE_PASSIVE
)
1026 scan_dur
= adapter
->passive_scan_time
;
1027 else if (*filtered_scan
)
1028 scan_dur
= adapter
->specific_scan_time
;
1030 scan_dur
= adapter
->active_scan_time
;
1033 (scan_chan_list
+ chan_idx
)->min_scan_time
=
1034 cpu_to_le16(scan_dur
);
1035 (scan_chan_list
+ chan_idx
)->max_scan_time
=
1036 cpu_to_le16(scan_dur
);
1039 /* Check if we are only scanning the current channel */
1040 if ((chan_idx
== 1) &&
1041 (user_scan_in
->chan_list
[0].chan_number
==
1042 priv
->curr_bss_params
.bss_descriptor
.channel
)) {
1043 *scan_current_only
= true;
1044 dev_dbg(adapter
->dev
,
1045 "info: Scan: Scanning current channel only\n");
1047 chan_num
= chan_idx
;
1049 dev_dbg(adapter
->dev
,
1050 "info: Scan: Creating full region channel list\n");
1051 chan_num
= mwifiex_scan_create_channel_list(priv
, user_scan_in
,
1057 * In associated state we will reduce the number of channels scanned per
1058 * scan command to avoid any traffic delay/loss. This number is decided
1059 * based on total number of channels to be scanned due to constraints
1060 * of command buffers.
1062 if (priv
->media_connected
) {
1063 if (chan_num
< MWIFIEX_LIMIT_1_CHANNEL_PER_SCAN_CMD
)
1064 *max_chan_per_scan
= 1;
1065 else if (chan_num
< MWIFIEX_LIMIT_2_CHANNELS_PER_SCAN_CMD
)
1066 *max_chan_per_scan
= 2;
1067 else if (chan_num
< MWIFIEX_LIMIT_3_CHANNELS_PER_SCAN_CMD
)
1068 *max_chan_per_scan
= 3;
1070 *max_chan_per_scan
= 4;
1075 * This function inspects the scan response buffer for pointers to
1078 * TLVs can be included at the end of the scan response BSS information.
1080 * Data in the buffer is parsed pointers to TLVs that can potentially
1081 * be passed back in the response.
1084 mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter
*adapter
,
1085 struct mwifiex_ie_types_data
*tlv
,
1086 u32 tlv_buf_size
, u32 req_tlv_type
,
1087 struct mwifiex_ie_types_data
**tlv_data
)
1089 struct mwifiex_ie_types_data
*current_tlv
;
1095 tlv_buf_left
= tlv_buf_size
;
1098 dev_dbg(adapter
->dev
, "info: SCAN_RESP: tlv_buf_size = %d\n",
1101 while (tlv_buf_left
>= sizeof(struct mwifiex_ie_types_header
)) {
1103 tlv_type
= le16_to_cpu(current_tlv
->header
.type
);
1104 tlv_len
= le16_to_cpu(current_tlv
->header
.len
);
1106 if (sizeof(tlv
->header
) + tlv_len
> tlv_buf_left
) {
1107 dev_err(adapter
->dev
, "SCAN_RESP: TLV buffer corrupt\n");
1111 if (req_tlv_type
== tlv_type
) {
1113 case TLV_TYPE_TSFTIMESTAMP
:
1114 dev_dbg(adapter
->dev
, "info: SCAN_RESP: TSF "
1115 "timestamp TLV, len = %d\n", tlv_len
);
1116 *tlv_data
= current_tlv
;
1118 case TLV_TYPE_CHANNELBANDLIST
:
1119 dev_dbg(adapter
->dev
, "info: SCAN_RESP: channel"
1120 " band list TLV, len = %d\n", tlv_len
);
1121 *tlv_data
= current_tlv
;
1124 dev_err(adapter
->dev
,
1125 "SCAN_RESP: unhandled TLV = %d\n",
1127 /* Give up, this seems corrupted */
1136 tlv_buf_left
-= (sizeof(tlv
->header
) + tlv_len
);
1138 (struct mwifiex_ie_types_data
*) (current_tlv
->data
+
1145 * This function parses provided beacon buffer and updates
1146 * respective fields in bss descriptor structure.
1148 int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter
*adapter
,
1149 struct mwifiex_bssdescriptor
*bss_entry
)
1153 struct ieee_types_fh_param_set
*fh_param_set
;
1154 struct ieee_types_ds_param_set
*ds_param_set
;
1155 struct ieee_types_cf_param_set
*cf_param_set
;
1156 struct ieee_types_ibss_param_set
*ibss_param_set
;
1163 u8 found_data_rate_ie
;
1165 struct ieee_types_vendor_specific
*vendor_ie
;
1166 const u8 wpa_oui
[4] = { 0x00, 0x50, 0xf2, 0x01 };
1167 const u8 wmm_oui
[4] = { 0x00, 0x50, 0xf2, 0x02 };
1169 found_data_rate_ie
= false;
1171 current_ptr
= bss_entry
->beacon_buf
;
1172 bytes_left
= bss_entry
->beacon_buf_size
;
1174 /* Process variable IE */
1175 while (bytes_left
>= 2) {
1176 element_id
= *current_ptr
;
1177 element_len
= *(current_ptr
+ 1);
1178 total_ie_len
= element_len
+ sizeof(struct ieee_types_header
);
1180 if (bytes_left
< total_ie_len
) {
1181 dev_err(adapter
->dev
, "err: InterpretIE: in processing"
1182 " IE, bytes left < IE length\n");
1185 switch (element_id
) {
1187 bss_entry
->ssid
.ssid_len
= element_len
;
1188 memcpy(bss_entry
->ssid
.ssid
, (current_ptr
+ 2),
1190 dev_dbg(adapter
->dev
,
1191 "info: InterpretIE: ssid: %-32s\n",
1192 bss_entry
->ssid
.ssid
);
1195 case WLAN_EID_SUPP_RATES
:
1196 memcpy(bss_entry
->data_rates
, current_ptr
+ 2,
1198 memcpy(bss_entry
->supported_rates
, current_ptr
+ 2,
1200 rate_size
= element_len
;
1201 found_data_rate_ie
= true;
1204 case WLAN_EID_FH_PARAMS
:
1206 (struct ieee_types_fh_param_set
*) current_ptr
;
1207 memcpy(&bss_entry
->phy_param_set
.fh_param_set
,
1209 sizeof(struct ieee_types_fh_param_set
));
1212 case WLAN_EID_DS_PARAMS
:
1214 (struct ieee_types_ds_param_set
*) current_ptr
;
1216 bss_entry
->channel
= ds_param_set
->current_chan
;
1218 memcpy(&bss_entry
->phy_param_set
.ds_param_set
,
1220 sizeof(struct ieee_types_ds_param_set
));
1223 case WLAN_EID_CF_PARAMS
:
1225 (struct ieee_types_cf_param_set
*) current_ptr
;
1226 memcpy(&bss_entry
->ss_param_set
.cf_param_set
,
1228 sizeof(struct ieee_types_cf_param_set
));
1231 case WLAN_EID_IBSS_PARAMS
:
1233 (struct ieee_types_ibss_param_set
*)
1235 memcpy(&bss_entry
->ss_param_set
.ibss_param_set
,
1237 sizeof(struct ieee_types_ibss_param_set
));
1240 case WLAN_EID_ERP_INFO
:
1241 bss_entry
->erp_flags
= *(current_ptr
+ 2);
1244 case WLAN_EID_PWR_CONSTRAINT
:
1245 bss_entry
->local_constraint
= *(current_ptr
+ 2);
1246 bss_entry
->sensed_11h
= true;
1249 case WLAN_EID_CHANNEL_SWITCH
:
1250 bss_entry
->chan_sw_ie_present
= true;
1251 case WLAN_EID_PWR_CAPABILITY
:
1252 case WLAN_EID_TPC_REPORT
:
1253 case WLAN_EID_QUIET
:
1254 bss_entry
->sensed_11h
= true;
1257 case WLAN_EID_EXT_SUPP_RATES
:
1259 * Only process extended supported rate
1260 * if data rate is already found.
1261 * Data rate IE should come before
1262 * extended supported rate IE
1264 if (found_data_rate_ie
) {
1265 if ((element_len
+ rate_size
) >
1266 MWIFIEX_SUPPORTED_RATES
)
1268 (MWIFIEX_SUPPORTED_RATES
-
1271 bytes_to_copy
= element_len
;
1273 rate
= (u8
*) bss_entry
->data_rates
;
1275 memcpy(rate
, current_ptr
+ 2, bytes_to_copy
);
1277 rate
= (u8
*) bss_entry
->supported_rates
;
1279 memcpy(rate
, current_ptr
+ 2, bytes_to_copy
);
1283 case WLAN_EID_VENDOR_SPECIFIC
:
1284 vendor_ie
= (struct ieee_types_vendor_specific
*)
1288 (vendor_ie
->vend_hdr
.oui
, wpa_oui
,
1290 bss_entry
->bcn_wpa_ie
=
1291 (struct ieee_types_vendor_specific
*)
1293 bss_entry
->wpa_offset
= (u16
)
1294 (current_ptr
- bss_entry
->beacon_buf
);
1295 } else if (!memcmp(vendor_ie
->vend_hdr
.oui
, wmm_oui
,
1298 sizeof(struct ieee_types_wmm_parameter
) ||
1300 sizeof(struct ieee_types_wmm_info
))
1302 * Only accept and copy the WMM IE if
1303 * it matches the size expected for the
1304 * WMM Info IE or the WMM Parameter IE.
1306 memcpy((u8
*) &bss_entry
->wmm_ie
,
1307 current_ptr
, total_ie_len
);
1311 bss_entry
->bcn_rsn_ie
=
1312 (struct ieee_types_generic
*) current_ptr
;
1313 bss_entry
->rsn_offset
= (u16
) (current_ptr
-
1314 bss_entry
->beacon_buf
);
1316 case WLAN_EID_BSS_AC_ACCESS_DELAY
:
1317 bss_entry
->bcn_wapi_ie
=
1318 (struct ieee_types_generic
*) current_ptr
;
1319 bss_entry
->wapi_offset
= (u16
) (current_ptr
-
1320 bss_entry
->beacon_buf
);
1322 case WLAN_EID_HT_CAPABILITY
:
1323 bss_entry
->bcn_ht_cap
= (struct ieee80211_ht_cap
*)
1325 sizeof(struct ieee_types_header
));
1326 bss_entry
->ht_cap_offset
= (u16
) (current_ptr
+
1327 sizeof(struct ieee_types_header
) -
1328 bss_entry
->beacon_buf
);
1330 case WLAN_EID_HT_OPERATION
:
1331 bss_entry
->bcn_ht_oper
=
1332 (struct ieee80211_ht_operation
*)(current_ptr
+
1333 sizeof(struct ieee_types_header
));
1334 bss_entry
->ht_info_offset
= (u16
) (current_ptr
+
1335 sizeof(struct ieee_types_header
) -
1336 bss_entry
->beacon_buf
);
1338 case WLAN_EID_VHT_CAPABILITY
:
1339 bss_entry
->disable_11ac
= false;
1340 bss_entry
->bcn_vht_cap
=
1341 (void *)(current_ptr
+
1342 sizeof(struct ieee_types_header
));
1343 bss_entry
->vht_cap_offset
=
1344 (u16
)((u8
*)bss_entry
->bcn_vht_cap
-
1345 bss_entry
->beacon_buf
);
1347 case WLAN_EID_VHT_OPERATION
:
1348 bss_entry
->bcn_vht_oper
=
1349 (void *)(current_ptr
+
1350 sizeof(struct ieee_types_header
));
1351 bss_entry
->vht_info_offset
=
1352 (u16
)((u8
*)bss_entry
->bcn_vht_oper
-
1353 bss_entry
->beacon_buf
);
1355 case WLAN_EID_BSS_COEX_2040
:
1356 bss_entry
->bcn_bss_co_2040
= current_ptr
+
1357 sizeof(struct ieee_types_header
);
1358 bss_entry
->bss_co_2040_offset
= (u16
) (current_ptr
+
1359 sizeof(struct ieee_types_header
) -
1360 bss_entry
->beacon_buf
);
1362 case WLAN_EID_EXT_CAPABILITY
:
1363 bss_entry
->bcn_ext_cap
= current_ptr
+
1364 sizeof(struct ieee_types_header
);
1365 bss_entry
->ext_cap_offset
= (u16
) (current_ptr
+
1366 sizeof(struct ieee_types_header
) -
1367 bss_entry
->beacon_buf
);
1369 case WLAN_EID_OPMODE_NOTIF
:
1370 bss_entry
->oper_mode
=
1371 (void *)(current_ptr
+
1372 sizeof(struct ieee_types_header
));
1373 bss_entry
->oper_mode_offset
=
1374 (u16
)((u8
*)bss_entry
->oper_mode
-
1375 bss_entry
->beacon_buf
);
1381 current_ptr
+= element_len
+ 2;
1383 /* Need to account for IE ID and IE Len */
1384 bytes_left
-= (element_len
+ 2);
1386 } /* while (bytes_left > 2) */
1391 * This function converts radio type scan parameter to a band configuration
1392 * to be used in join command.
1395 mwifiex_radio_type_to_band(u8 radio_type
)
1397 switch (radio_type
) {
1398 case HostCmd_SCAN_RADIO_TYPE_A
:
1400 case HostCmd_SCAN_RADIO_TYPE_BG
:
1407 * This is an internal function used to start a scan based on an input
1410 * This uses the input user scan configuration information when provided in
1411 * order to send the appropriate scan commands to firmware to populate or
1412 * update the internal driver scan table.
1414 int mwifiex_scan_networks(struct mwifiex_private
*priv
,
1415 const struct mwifiex_user_scan_cfg
*user_scan_in
)
1418 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1419 struct cmd_ctrl_node
*cmd_node
;
1420 union mwifiex_scan_cmd_config_tlv
*scan_cfg_out
;
1421 struct mwifiex_ie_types_chan_list_param_set
*chan_list_out
;
1422 struct mwifiex_chan_scan_param_set
*scan_chan_list
;
1424 u8 scan_current_chan_only
;
1425 u8 max_chan_per_scan
;
1426 unsigned long flags
;
1428 if (adapter
->scan_processing
) {
1429 dev_err(adapter
->dev
, "cmd: Scan already in process...\n");
1433 if (priv
->scan_block
) {
1434 dev_err(adapter
->dev
,
1435 "cmd: Scan is blocked during association...\n");
1439 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1440 adapter
->scan_processing
= true;
1441 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1443 scan_cfg_out
= kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv
),
1445 if (!scan_cfg_out
) {
1450 scan_chan_list
= kcalloc(MWIFIEX_USER_SCAN_CHAN_MAX
,
1451 sizeof(struct mwifiex_chan_scan_param_set
),
1453 if (!scan_chan_list
) {
1454 kfree(scan_cfg_out
);
1459 mwifiex_config_scan(priv
, user_scan_in
, &scan_cfg_out
->config
,
1460 &chan_list_out
, scan_chan_list
, &max_chan_per_scan
,
1461 &filtered_scan
, &scan_current_chan_only
);
1463 ret
= mwifiex_scan_channel_list(priv
, max_chan_per_scan
, filtered_scan
,
1464 &scan_cfg_out
->config
, chan_list_out
,
1467 /* Get scan command from scan_pending_q and put to cmd_pending_q */
1469 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1470 if (!list_empty(&adapter
->scan_pending_q
)) {
1471 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
1472 struct cmd_ctrl_node
, list
);
1473 list_del(&cmd_node
->list
);
1474 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1476 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
1478 queue_work(adapter
->workqueue
, &adapter
->main_work
);
1480 /* Perform internal scan synchronously */
1481 if (!priv
->scan_request
) {
1482 dev_dbg(adapter
->dev
, "wait internal scan\n");
1483 mwifiex_wait_queue_complete(adapter
, cmd_node
);
1486 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1491 kfree(scan_cfg_out
);
1492 kfree(scan_chan_list
);
1495 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1496 adapter
->scan_processing
= false;
1497 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1503 * This function prepares a scan command to be sent to the firmware.
1505 * This uses the scan command configuration sent to the command processing
1506 * module in command preparation stage to configure a scan command structure
1507 * to send to firmware.
1509 * The fixed fields specifying the BSS type and BSSID filters as well as a
1510 * variable number/length of TLVs are sent in the command to firmware.
1512 * Preparation also includes -
1513 * - Setting command ID, and proper size
1514 * - Ensuring correct endian-ness
1516 int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command
*cmd
,
1517 struct mwifiex_scan_cmd_config
*scan_cfg
)
1519 struct host_cmd_ds_802_11_scan
*scan_cmd
= &cmd
->params
.scan
;
1521 /* Set fixed field variables in scan command */
1522 scan_cmd
->bss_mode
= scan_cfg
->bss_mode
;
1523 memcpy(scan_cmd
->bssid
, scan_cfg
->specific_bssid
,
1524 sizeof(scan_cmd
->bssid
));
1525 memcpy(scan_cmd
->tlv_buffer
, scan_cfg
->tlv_buf
, scan_cfg
->tlv_buf_len
);
1527 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_SCAN
);
1529 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
1530 cmd
->size
= cpu_to_le16((u16
) (sizeof(scan_cmd
->bss_mode
)
1531 + sizeof(scan_cmd
->bssid
)
1532 + scan_cfg
->tlv_buf_len
+ S_DS_GEN
));
1538 * This function checks compatibility of requested network with current
1541 int mwifiex_check_network_compatibility(struct mwifiex_private
*priv
,
1542 struct mwifiex_bssdescriptor
*bss_desc
)
1549 if ((mwifiex_get_cfp(priv
, (u8
) bss_desc
->bss_band
,
1550 (u16
) bss_desc
->channel
, 0))) {
1551 switch (priv
->bss_mode
) {
1552 case NL80211_IFTYPE_STATION
:
1553 case NL80211_IFTYPE_ADHOC
:
1554 ret
= mwifiex_is_network_compatible(priv
, bss_desc
,
1557 dev_err(priv
->adapter
->dev
,
1558 "Incompatible network settings\n");
1568 static int mwifiex_update_curr_bss_params(struct mwifiex_private
*priv
,
1569 struct cfg80211_bss
*bss
)
1571 struct mwifiex_bssdescriptor
*bss_desc
;
1573 unsigned long flags
;
1575 /* Allocate and fill new bss descriptor */
1576 bss_desc
= kzalloc(sizeof(struct mwifiex_bssdescriptor
), GFP_KERNEL
);
1580 ret
= mwifiex_fill_new_bss_desc(priv
, bss
, bss_desc
);
1584 ret
= mwifiex_check_network_compatibility(priv
, bss_desc
);
1588 spin_lock_irqsave(&priv
->curr_bcn_buf_lock
, flags
);
1589 /* Make a copy of current BSSID descriptor */
1590 memcpy(&priv
->curr_bss_params
.bss_descriptor
, bss_desc
,
1591 sizeof(priv
->curr_bss_params
.bss_descriptor
));
1593 /* The contents of beacon_ie will be copied to its own buffer
1594 * in mwifiex_save_curr_bcn()
1596 mwifiex_save_curr_bcn(priv
);
1597 spin_unlock_irqrestore(&priv
->curr_bcn_buf_lock
, flags
);
1600 /* beacon_ie buffer was allocated in function
1601 * mwifiex_fill_new_bss_desc(). Free it now.
1603 kfree(bss_desc
->beacon_buf
);
1609 mwifiex_parse_single_response_buf(struct mwifiex_private
*priv
, u8
**bss_info
,
1610 u32
*bytes_left
, u64 fw_tsf
, u8
*radio_type
,
1611 bool ext_scan
, s32 rssi_val
)
1613 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1614 struct mwifiex_chan_freq_power
*cfp
;
1615 struct cfg80211_bss
*bss
;
1621 u16 beacon_size
= 0;
1625 u16 cap_info_bitmap
;
1628 struct mwifiex_fixed_bcn_param
*bcn_param
;
1629 struct mwifiex_bss_priv
*bss_priv
;
1631 if (*bytes_left
>= sizeof(beacon_size
)) {
1632 /* Extract & convert beacon size from command buffer */
1633 memcpy(&beacon_size
, *bss_info
, sizeof(beacon_size
));
1634 *bytes_left
-= sizeof(beacon_size
);
1635 *bss_info
+= sizeof(beacon_size
);
1638 if (!beacon_size
|| beacon_size
> *bytes_left
) {
1639 *bss_info
+= *bytes_left
;
1644 /* Initialize the current working beacon pointer for this BSS
1647 current_ptr
= *bss_info
;
1649 /* Advance the return beacon pointer past the current beacon */
1650 *bss_info
+= beacon_size
;
1651 *bytes_left
-= beacon_size
;
1653 curr_bcn_bytes
= beacon_size
;
1655 /* First 5 fields are bssid, RSSI(for legacy scan only),
1656 * time stamp, beacon interval, and capability information
1658 if (curr_bcn_bytes
< ETH_ALEN
+ sizeof(u8
) +
1659 sizeof(struct mwifiex_fixed_bcn_param
)) {
1660 dev_err(adapter
->dev
, "InterpretIE: not enough bytes left\n");
1664 memcpy(bssid
, current_ptr
, ETH_ALEN
);
1665 current_ptr
+= ETH_ALEN
;
1666 curr_bcn_bytes
-= ETH_ALEN
;
1669 rssi
= (s32
) *current_ptr
;
1670 rssi
= (-rssi
) * 100; /* Convert dBm to mBm */
1671 current_ptr
+= sizeof(u8
);
1672 curr_bcn_bytes
-= sizeof(u8
);
1673 dev_dbg(adapter
->dev
, "info: InterpretIE: RSSI=%d\n", rssi
);
1678 bcn_param
= (struct mwifiex_fixed_bcn_param
*)current_ptr
;
1679 current_ptr
+= sizeof(*bcn_param
);
1680 curr_bcn_bytes
-= sizeof(*bcn_param
);
1682 timestamp
= le64_to_cpu(bcn_param
->timestamp
);
1683 beacon_period
= le16_to_cpu(bcn_param
->beacon_period
);
1685 cap_info_bitmap
= le16_to_cpu(bcn_param
->cap_info_bitmap
);
1686 dev_dbg(adapter
->dev
, "info: InterpretIE: capabilities=0x%X\n",
1689 /* Rest of the current buffer are IE's */
1690 ie_buf
= current_ptr
;
1691 ie_len
= curr_bcn_bytes
;
1692 dev_dbg(adapter
->dev
, "info: InterpretIE: IELength for this AP = %d\n",
1695 while (curr_bcn_bytes
>= sizeof(struct ieee_types_header
)) {
1696 u8 element_id
, element_len
;
1698 element_id
= *current_ptr
;
1699 element_len
= *(current_ptr
+ 1);
1700 if (curr_bcn_bytes
< element_len
+
1701 sizeof(struct ieee_types_header
)) {
1702 dev_err(adapter
->dev
,
1703 "%s: bytes left < IE length\n", __func__
);
1706 if (element_id
== WLAN_EID_DS_PARAMS
) {
1707 channel
= *(current_ptr
+
1708 sizeof(struct ieee_types_header
));
1712 current_ptr
+= element_len
+ sizeof(struct ieee_types_header
);
1713 curr_bcn_bytes
-= element_len
+
1714 sizeof(struct ieee_types_header
);
1718 struct ieee80211_channel
*chan
;
1721 /* Skip entry if on csa closed channel */
1722 if (channel
== priv
->csa_chan
) {
1723 dev_dbg(adapter
->dev
,
1724 "Dropping entry on csa closed channel\n");
1730 band
= mwifiex_radio_type_to_band(*radio_type
&
1733 cfp
= mwifiex_get_cfp(priv
, band
, channel
, 0);
1735 freq
= cfp
? cfp
->freq
: 0;
1737 chan
= ieee80211_get_channel(priv
->wdev
->wiphy
, freq
);
1739 if (chan
&& !(chan
->flags
& IEEE80211_CHAN_DISABLED
)) {
1740 bss
= cfg80211_inform_bss(priv
->wdev
->wiphy
,
1741 chan
, bssid
, timestamp
,
1742 cap_info_bitmap
, beacon_period
,
1743 ie_buf
, ie_len
, rssi
, GFP_KERNEL
);
1744 bss_priv
= (struct mwifiex_bss_priv
*)bss
->priv
;
1745 bss_priv
->band
= band
;
1746 bss_priv
->fw_tsf
= fw_tsf
;
1747 if (priv
->media_connected
&&
1748 !memcmp(bssid
, priv
->curr_bss_params
.bss_descriptor
1749 .mac_address
, ETH_ALEN
))
1750 mwifiex_update_curr_bss_params(priv
, bss
);
1751 cfg80211_put_bss(priv
->wdev
->wiphy
, bss
);
1754 dev_dbg(adapter
->dev
, "missing BSS channel IE\n");
1760 static void mwifiex_check_next_scan_command(struct mwifiex_private
*priv
)
1762 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1763 struct cmd_ctrl_node
*cmd_node
;
1764 unsigned long flags
;
1766 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
1767 if (list_empty(&adapter
->scan_pending_q
)) {
1768 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
1769 spin_lock_irqsave(&adapter
->mwifiex_cmd_lock
, flags
);
1770 adapter
->scan_processing
= false;
1771 spin_unlock_irqrestore(&adapter
->mwifiex_cmd_lock
, flags
);
1773 /* Need to indicate IOCTL complete */
1774 if (adapter
->curr_cmd
->wait_q_enabled
) {
1775 adapter
->cmd_wait_q
.status
= 0;
1776 if (!priv
->scan_request
) {
1777 dev_dbg(adapter
->dev
,
1778 "complete internal scan\n");
1779 mwifiex_complete_cmd(adapter
,
1783 if (priv
->report_scan_result
)
1784 priv
->report_scan_result
= false;
1786 if (priv
->scan_request
) {
1787 dev_dbg(adapter
->dev
, "info: notifying scan done\n");
1788 cfg80211_scan_done(priv
->scan_request
, 0);
1789 priv
->scan_request
= NULL
;
1791 priv
->scan_aborting
= false;
1792 dev_dbg(adapter
->dev
, "info: scan already aborted\n");
1795 if ((priv
->scan_aborting
&& !priv
->scan_request
) ||
1797 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1799 adapter
->scan_delay_cnt
= MWIFIEX_MAX_SCAN_DELAY_CNT
;
1800 mod_timer(&priv
->scan_delay_timer
, jiffies
);
1801 dev_dbg(priv
->adapter
->dev
,
1802 "info: %s: triggerring scan abort\n", __func__
);
1803 } else if (!mwifiex_wmm_lists_empty(adapter
) &&
1804 (priv
->scan_request
&& (priv
->scan_request
->flags
&
1805 NL80211_SCAN_FLAG_LOW_PRIORITY
))) {
1806 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1808 adapter
->scan_delay_cnt
= 1;
1809 mod_timer(&priv
->scan_delay_timer
, jiffies
+
1810 msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC
));
1811 dev_dbg(priv
->adapter
->dev
,
1812 "info: %s: deferring scan\n", __func__
);
1814 /* Get scan command from scan_pending_q and put to
1817 cmd_node
= list_first_entry(&adapter
->scan_pending_q
,
1818 struct cmd_ctrl_node
, list
);
1819 list_del(&cmd_node
->list
);
1820 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
,
1822 mwifiex_insert_cmd_to_pending_q(adapter
, cmd_node
,
1831 * This function handles the command response of scan.
1833 * The response buffer for the scan command has the following
1836 * .-------------------------------------------------------------.
1837 * | Header (4 * sizeof(t_u16)): Standard command response hdr |
1838 * .-------------------------------------------------------------.
1839 * | BufSize (t_u16) : sizeof the BSS Description data |
1840 * .-------------------------------------------------------------.
1841 * | NumOfSet (t_u8) : Number of BSS Descs returned |
1842 * .-------------------------------------------------------------.
1843 * | BSSDescription data (variable, size given in BufSize) |
1844 * .-------------------------------------------------------------.
1845 * | TLV data (variable, size calculated using Header->Size, |
1846 * | BufSize and sizeof the fixed fields above) |
1847 * .-------------------------------------------------------------.
1849 int mwifiex_ret_802_11_scan(struct mwifiex_private
*priv
,
1850 struct host_cmd_ds_command
*resp
)
1853 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1854 struct host_cmd_ds_802_11_scan_rsp
*scan_rsp
;
1855 struct mwifiex_ie_types_data
*tlv_data
;
1856 struct mwifiex_ie_types_tsf_timestamp
*tsf_tlv
;
1862 struct mwifiex_ie_types_chan_band_list_param_set
*chan_band_tlv
;
1863 struct chan_band_param_set
*chan_band
;
1868 is_bgscan_resp
= (le16_to_cpu(resp
->command
)
1869 == HostCmd_CMD_802_11_BG_SCAN_QUERY
);
1871 scan_rsp
= &resp
->params
.bg_scan_query_resp
.scan_resp
;
1873 scan_rsp
= &resp
->params
.scan_resp
;
1876 if (scan_rsp
->number_of_sets
> MWIFIEX_MAX_AP
) {
1877 dev_err(adapter
->dev
, "SCAN_RESP: too many AP returned (%d)\n",
1878 scan_rsp
->number_of_sets
);
1880 goto check_next_scan
;
1883 /* Check csa channel expiry before parsing scan response */
1884 mwifiex_11h_get_csa_closed_channel(priv
);
1886 bytes_left
= le16_to_cpu(scan_rsp
->bss_descript_size
);
1887 dev_dbg(adapter
->dev
, "info: SCAN_RESP: bss_descript_size %d\n",
1890 scan_resp_size
= le16_to_cpu(resp
->size
);
1892 dev_dbg(adapter
->dev
,
1893 "info: SCAN_RESP: returned %d APs before parsing\n",
1894 scan_rsp
->number_of_sets
);
1896 bss_info
= scan_rsp
->bss_desc_and_tlv_buffer
;
1899 * The size of the TLV buffer is equal to the entire command response
1900 * size (scan_resp_size) minus the fixed fields (sizeof()'s), the
1901 * BSS Descriptions (bss_descript_size as bytesLef) and the command
1902 * response header (S_DS_GEN)
1904 tlv_buf_size
= scan_resp_size
- (bytes_left
1905 + sizeof(scan_rsp
->bss_descript_size
)
1906 + sizeof(scan_rsp
->number_of_sets
)
1909 tlv_data
= (struct mwifiex_ie_types_data
*) (scan_rsp
->
1910 bss_desc_and_tlv_buffer
+
1913 /* Search the TLV buffer space in the scan response for any valid
1915 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter
, tlv_data
, tlv_buf_size
,
1916 TLV_TYPE_TSFTIMESTAMP
,
1917 (struct mwifiex_ie_types_data
**)
1920 /* Search the TLV buffer space in the scan response for any valid
1922 mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter
, tlv_data
, tlv_buf_size
,
1923 TLV_TYPE_CHANNELBANDLIST
,
1924 (struct mwifiex_ie_types_data
**)
1927 for (idx
= 0; idx
< scan_rsp
->number_of_sets
&& bytes_left
; idx
++) {
1929 * If the TSF TLV was appended to the scan results, save this
1930 * entry's TSF value in the fw_tsf field. It is the firmware's
1931 * TSF value at the time the beacon or probe response was
1935 memcpy(&fw_tsf
, &tsf_tlv
->tsf_data
[idx
* TSF_DATA_SIZE
],
1938 if (chan_band_tlv
) {
1939 chan_band
= &chan_band_tlv
->chan_band_param
[idx
];
1940 radio_type
= &chan_band
->radio_type
;
1945 ret
= mwifiex_parse_single_response_buf(priv
, &bss_info
,
1947 le64_to_cpu(fw_tsf
),
1948 radio_type
, false, 0);
1950 goto check_next_scan
;
1954 mwifiex_check_next_scan_command(priv
);
1959 * This function prepares an extended scan command to be sent to the firmware
1961 * This uses the scan command configuration sent to the command processing
1962 * module in command preparation stage to configure a extended scan command
1963 * structure to send to firmware.
1965 int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private
*priv
,
1966 struct host_cmd_ds_command
*cmd
,
1969 struct host_cmd_ds_802_11_scan_ext
*ext_scan
= &cmd
->params
.ext_scan
;
1970 struct mwifiex_scan_cmd_config
*scan_cfg
= data_buf
;
1972 memcpy(ext_scan
->tlv_buffer
, scan_cfg
->tlv_buf
, scan_cfg
->tlv_buf_len
);
1974 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_SCAN_EXT
);
1976 /* Size is equal to the sizeof(fixed portions) + the TLV len + header */
1977 cmd
->size
= cpu_to_le16((u16
)(sizeof(ext_scan
->reserved
)
1978 + scan_cfg
->tlv_buf_len
+ S_DS_GEN
));
1983 /* This function handles the command response of extended scan */
1984 int mwifiex_ret_802_11_scan_ext(struct mwifiex_private
*priv
)
1986 dev_dbg(priv
->adapter
->dev
, "info: EXT scan returns successfully\n");
1990 /* This function This function handles the event extended scan report. It
1991 * parses extended scan results and informs to cfg80211 stack.
1993 int mwifiex_handle_event_ext_scan_report(struct mwifiex_private
*priv
,
1997 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1999 u32 bytes_left
, bytes_left_for_tlv
, idx
;
2001 struct mwifiex_ie_types_data
*tlv
;
2002 struct mwifiex_ie_types_bss_scan_rsp
*scan_rsp_tlv
;
2003 struct mwifiex_ie_types_bss_scan_info
*scan_info_tlv
;
2007 struct mwifiex_event_scan_result
*event_scan
= buf
;
2008 u8 num_of_set
= event_scan
->num_of_set
;
2009 u8
*scan_resp
= buf
+ sizeof(struct mwifiex_event_scan_result
);
2010 u16 scan_resp_size
= le16_to_cpu(event_scan
->buf_size
);
2012 if (num_of_set
> MWIFIEX_MAX_AP
) {
2013 dev_err(adapter
->dev
,
2014 "EXT_SCAN: Invalid number of AP returned (%d)!!\n",
2017 goto check_next_scan
;
2020 bytes_left
= scan_resp_size
;
2021 dev_dbg(adapter
->dev
,
2022 "EXT_SCAN: size %d, returned %d APs...",
2023 scan_resp_size
, num_of_set
);
2025 tlv
= (struct mwifiex_ie_types_data
*)scan_resp
;
2027 for (idx
= 0; idx
< num_of_set
&& bytes_left
; idx
++) {
2028 type
= le16_to_cpu(tlv
->header
.type
);
2029 len
= le16_to_cpu(tlv
->header
.len
);
2030 if (bytes_left
< sizeof(struct mwifiex_ie_types_header
) + len
) {
2031 dev_err(adapter
->dev
, "EXT_SCAN: Error bytes left < TLV length\n");
2034 scan_rsp_tlv
= NULL
;
2035 scan_info_tlv
= NULL
;
2036 bytes_left_for_tlv
= bytes_left
;
2038 /* BSS response TLV with beacon or probe response buffer
2039 * at the initial position of each descriptor
2041 if (type
!= TLV_TYPE_BSS_SCAN_RSP
)
2044 bss_info
= (u8
*)tlv
;
2045 scan_rsp_tlv
= (struct mwifiex_ie_types_bss_scan_rsp
*)tlv
;
2046 tlv
= (struct mwifiex_ie_types_data
*)(tlv
->data
+ len
);
2047 bytes_left_for_tlv
-=
2048 (len
+ sizeof(struct mwifiex_ie_types_header
));
2050 while (bytes_left_for_tlv
>=
2051 sizeof(struct mwifiex_ie_types_header
) &&
2052 le16_to_cpu(tlv
->header
.type
) != TLV_TYPE_BSS_SCAN_RSP
) {
2053 type
= le16_to_cpu(tlv
->header
.type
);
2054 len
= le16_to_cpu(tlv
->header
.len
);
2055 if (bytes_left_for_tlv
<
2056 sizeof(struct mwifiex_ie_types_header
) + len
) {
2057 dev_err(adapter
->dev
,
2058 "EXT_SCAN: Error in processing TLV, bytes left < TLV length\n");
2059 scan_rsp_tlv
= NULL
;
2060 bytes_left_for_tlv
= 0;
2064 case TLV_TYPE_BSS_SCAN_INFO
:
2066 (struct mwifiex_ie_types_bss_scan_info
*)tlv
;
2068 sizeof(struct mwifiex_ie_types_bss_scan_info
) -
2069 sizeof(struct mwifiex_ie_types_header
)) {
2070 bytes_left_for_tlv
= 0;
2077 tlv
= (struct mwifiex_ie_types_data
*)(tlv
->data
+ len
);
2079 (len
+ sizeof(struct mwifiex_ie_types_header
));
2080 bytes_left_for_tlv
-=
2081 (len
+ sizeof(struct mwifiex_ie_types_header
));
2087 /* Advance pointer to the beacon buffer length and
2088 * update the bytes count so that the function
2089 * wlan_interpret_bss_desc_with_ie() can handle the
2090 * scan buffer withut any change
2092 bss_info
+= sizeof(u16
);
2093 bytes_left
-= sizeof(u16
);
2095 if (scan_info_tlv
) {
2096 rssi
= (s32
)(s16
)(le16_to_cpu(scan_info_tlv
->rssi
));
2097 rssi
*= 100; /* Convert dBm to mBm */
2098 dev_dbg(adapter
->dev
,
2099 "info: InterpretIE: RSSI=%d\n", rssi
);
2100 fw_tsf
= le64_to_cpu(scan_info_tlv
->tsf
);
2101 radio_type
= &scan_info_tlv
->radio_type
;
2105 ret
= mwifiex_parse_single_response_buf(priv
, &bss_info
,
2106 &bytes_left
, fw_tsf
,
2107 radio_type
, true, rssi
);
2109 goto check_next_scan
;
2113 if (!event_scan
->more_event
)
2114 mwifiex_check_next_scan_command(priv
);
2120 * This function prepares command for background scan query.
2122 * Preparation includes -
2123 * - Setting command ID and proper size
2124 * - Setting background scan flush parameter
2125 * - Ensuring correct endian-ness
2127 int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command
*cmd
)
2129 struct host_cmd_ds_802_11_bg_scan_query
*bg_query
=
2130 &cmd
->params
.bg_scan_query
;
2132 cmd
->command
= cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY
);
2133 cmd
->size
= cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query
)
2136 bg_query
->flush
= 1;
2142 * This function inserts scan command node to the scan pending queue.
2145 mwifiex_queue_scan_cmd(struct mwifiex_private
*priv
,
2146 struct cmd_ctrl_node
*cmd_node
)
2148 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2149 unsigned long flags
;
2151 cmd_node
->wait_q_enabled
= true;
2152 cmd_node
->condition
= &adapter
->scan_wait_q_woken
;
2153 spin_lock_irqsave(&adapter
->scan_pending_q_lock
, flags
);
2154 list_add_tail(&cmd_node
->list
, &adapter
->scan_pending_q
);
2155 spin_unlock_irqrestore(&adapter
->scan_pending_q_lock
, flags
);
2159 * This function sends a scan command for all available channels to the
2160 * firmware, filtered on a specific SSID.
2162 static int mwifiex_scan_specific_ssid(struct mwifiex_private
*priv
,
2163 struct cfg80211_ssid
*req_ssid
)
2165 struct mwifiex_adapter
*adapter
= priv
->adapter
;
2167 struct mwifiex_user_scan_cfg
*scan_cfg
;
2169 if (adapter
->scan_processing
) {
2170 dev_err(adapter
->dev
, "cmd: Scan already in process...\n");
2174 if (priv
->scan_block
) {
2175 dev_err(adapter
->dev
,
2176 "cmd: Scan is blocked during association...\n");
2180 scan_cfg
= kzalloc(sizeof(struct mwifiex_user_scan_cfg
), GFP_KERNEL
);
2184 scan_cfg
->ssid_list
= req_ssid
;
2185 scan_cfg
->num_ssids
= 1;
2187 ret
= mwifiex_scan_networks(priv
, scan_cfg
);
2194 * Sends IOCTL request to start a scan.
2196 * This function allocates the IOCTL request buffer, fills it
2197 * with requisite parameters and calls the IOCTL handler.
2199 * Scan command can be issued for both normal scan and specific SSID
2200 * scan, depending upon whether an SSID is provided or not.
2202 int mwifiex_request_scan(struct mwifiex_private
*priv
,
2203 struct cfg80211_ssid
*req_ssid
)
2207 if (down_interruptible(&priv
->async_sem
)) {
2208 dev_err(priv
->adapter
->dev
, "%s: acquire semaphore\n",
2213 priv
->adapter
->scan_wait_q_woken
= false;
2215 if (req_ssid
&& req_ssid
->ssid_len
!= 0)
2216 /* Specific SSID scan */
2217 ret
= mwifiex_scan_specific_ssid(priv
, req_ssid
);
2220 ret
= mwifiex_scan_networks(priv
, NULL
);
2222 up(&priv
->async_sem
);
2228 * This function appends the vendor specific IE TLV to a buffer.
2231 mwifiex_cmd_append_vsie_tlv(struct mwifiex_private
*priv
,
2232 u16 vsie_mask
, u8
**buffer
)
2234 int id
, ret_len
= 0;
2235 struct mwifiex_ie_types_vendor_param_set
*vs_param_set
;
2243 * Traverse through the saved vendor specific IE array and append
2244 * the selected(scan/assoc/adhoc) IE as TLV to the command
2246 for (id
= 0; id
< MWIFIEX_MAX_VSIE_NUM
; id
++) {
2247 if (priv
->vs_ie
[id
].mask
& vsie_mask
) {
2249 (struct mwifiex_ie_types_vendor_param_set
*)
2251 vs_param_set
->header
.type
=
2252 cpu_to_le16(TLV_TYPE_PASSTHROUGH
);
2253 vs_param_set
->header
.len
=
2254 cpu_to_le16((((u16
) priv
->vs_ie
[id
].ie
[1])
2256 memcpy(vs_param_set
->ie
, priv
->vs_ie
[id
].ie
,
2257 le16_to_cpu(vs_param_set
->header
.len
));
2258 *buffer
+= le16_to_cpu(vs_param_set
->header
.len
) +
2259 sizeof(struct mwifiex_ie_types_header
);
2260 ret_len
+= le16_to_cpu(vs_param_set
->header
.len
) +
2261 sizeof(struct mwifiex_ie_types_header
);
2268 * This function saves a beacon buffer of the current BSS descriptor.
2270 * The current beacon buffer is saved so that it can be restored in the
2271 * following cases that makes the beacon buffer not to contain the current
2272 * ssid's beacon buffer.
2273 * - The current ssid was not found somehow in the last scan.
2274 * - The current ssid was the last entry of the scan table and overloaded.
2277 mwifiex_save_curr_bcn(struct mwifiex_private
*priv
)
2279 struct mwifiex_bssdescriptor
*curr_bss
=
2280 &priv
->curr_bss_params
.bss_descriptor
;
2282 if (!curr_bss
->beacon_buf_size
)
2285 /* allocate beacon buffer at 1st time; or if it's size has changed */
2286 if (!priv
->curr_bcn_buf
||
2287 priv
->curr_bcn_size
!= curr_bss
->beacon_buf_size
) {
2288 priv
->curr_bcn_size
= curr_bss
->beacon_buf_size
;
2290 kfree(priv
->curr_bcn_buf
);
2291 priv
->curr_bcn_buf
= kmalloc(curr_bss
->beacon_buf_size
,
2293 if (!priv
->curr_bcn_buf
)
2297 memcpy(priv
->curr_bcn_buf
, curr_bss
->beacon_buf
,
2298 curr_bss
->beacon_buf_size
);
2299 dev_dbg(priv
->adapter
->dev
, "info: current beacon saved %d\n",
2300 priv
->curr_bcn_size
);
2302 curr_bss
->beacon_buf
= priv
->curr_bcn_buf
;
2304 /* adjust the pointers in the current BSS descriptor */
2305 if (curr_bss
->bcn_wpa_ie
)
2306 curr_bss
->bcn_wpa_ie
=
2307 (struct ieee_types_vendor_specific
*)
2308 (curr_bss
->beacon_buf
+
2309 curr_bss
->wpa_offset
);
2311 if (curr_bss
->bcn_rsn_ie
)
2312 curr_bss
->bcn_rsn_ie
= (struct ieee_types_generic
*)
2313 (curr_bss
->beacon_buf
+
2314 curr_bss
->rsn_offset
);
2316 if (curr_bss
->bcn_ht_cap
)
2317 curr_bss
->bcn_ht_cap
= (struct ieee80211_ht_cap
*)
2318 (curr_bss
->beacon_buf
+
2319 curr_bss
->ht_cap_offset
);
2321 if (curr_bss
->bcn_ht_oper
)
2322 curr_bss
->bcn_ht_oper
= (struct ieee80211_ht_operation
*)
2323 (curr_bss
->beacon_buf
+
2324 curr_bss
->ht_info_offset
);
2326 if (curr_bss
->bcn_vht_cap
)
2327 curr_bss
->bcn_vht_cap
= (void *)(curr_bss
->beacon_buf
+
2328 curr_bss
->vht_cap_offset
);
2330 if (curr_bss
->bcn_vht_oper
)
2331 curr_bss
->bcn_vht_oper
= (void *)(curr_bss
->beacon_buf
+
2332 curr_bss
->vht_info_offset
);
2334 if (curr_bss
->bcn_bss_co_2040
)
2335 curr_bss
->bcn_bss_co_2040
=
2336 (curr_bss
->beacon_buf
+ curr_bss
->bss_co_2040_offset
);
2338 if (curr_bss
->bcn_ext_cap
)
2339 curr_bss
->bcn_ext_cap
= curr_bss
->beacon_buf
+
2340 curr_bss
->ext_cap_offset
;
2342 if (curr_bss
->oper_mode
)
2343 curr_bss
->oper_mode
= (void *)(curr_bss
->beacon_buf
+
2344 curr_bss
->oper_mode_offset
);
2348 * This function frees the current BSS descriptor beacon buffer.
2351 mwifiex_free_curr_bcn(struct mwifiex_private
*priv
)
2353 kfree(priv
->curr_bcn_buf
);
2354 priv
->curr_bcn_buf
= NULL
;