Commit | Line | Data |
---|---|---|
5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: scan ioctl and command handling | |
3 | * | |
65da33f5 | 4 | * Copyright (C) 2011-2014, Marvell International Ltd. |
5e6e3a92 BZ |
5 | * |
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. | |
13 | * | |
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. | |
18 | */ | |
19 | ||
20 | #include "decl.h" | |
21 | #include "ioctl.h" | |
22 | #include "util.h" | |
23 | #include "fw.h" | |
24 | #include "main.h" | |
25 | #include "11n.h" | |
26 | #include "cfg80211.h" | |
27 | ||
28 | /* The maximum number of channels the firmware can scan per command */ | |
29 | #define MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN 14 | |
30 | ||
658f37b7 | 31 | #define MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD 4 |
5e6e3a92 BZ |
32 | |
33 | /* Memory needed to store a max sized Channel List TLV for a firmware scan */ | |
34 | #define CHAN_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_header) \ | |
35 | + (MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN \ | |
36 | *sizeof(struct mwifiex_chan_scan_param_set))) | |
37 | ||
38 | /* Memory needed to store supported rate */ | |
39 | #define RATE_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_rates_param_set) \ | |
40 | + HOSTCMD_SUPPORTED_RATES) | |
41 | ||
42 | /* Memory needed to store a max number/size WildCard SSID TLV for a firmware | |
43 | scan */ | |
44 | #define WILDCARD_SSID_TLV_MAX_SIZE \ | |
45 | (MWIFIEX_MAX_SSID_LIST_LENGTH * \ | |
46 | (sizeof(struct mwifiex_ie_types_wildcard_ssid_params) \ | |
47 | + IEEE80211_MAX_SSID_LEN)) | |
48 | ||
49 | /* Maximum memory needed for a mwifiex_scan_cmd_config with all TLVs at max */ | |
50 | #define MAX_SCAN_CFG_ALLOC (sizeof(struct mwifiex_scan_cmd_config) \ | |
51 | + sizeof(struct mwifiex_ie_types_num_probes) \ | |
52 | + sizeof(struct mwifiex_ie_types_htcap) \ | |
53 | + CHAN_TLV_MAX_SIZE \ | |
54 | + RATE_TLV_MAX_SIZE \ | |
55 | + WILDCARD_SSID_TLV_MAX_SIZE) | |
56 | ||
57 | ||
58 | union mwifiex_scan_cmd_config_tlv { | |
59 | /* Scan configuration (variable length) */ | |
60 | struct mwifiex_scan_cmd_config config; | |
61 | /* Max allocated block */ | |
62 | u8 config_alloc_buf[MAX_SCAN_CFG_ALLOC]; | |
63 | }; | |
64 | ||
65 | enum cipher_suite { | |
66 | CIPHER_SUITE_TKIP, | |
67 | CIPHER_SUITE_CCMP, | |
68 | CIPHER_SUITE_MAX | |
69 | }; | |
70 | static u8 mwifiex_wpa_oui[CIPHER_SUITE_MAX][4] = { | |
71 | { 0x00, 0x50, 0xf2, 0x02 }, /* TKIP */ | |
72 | { 0x00, 0x50, 0xf2, 0x04 }, /* AES */ | |
73 | }; | |
74 | static u8 mwifiex_rsn_oui[CIPHER_SUITE_MAX][4] = { | |
75 | { 0x00, 0x0f, 0xac, 0x02 }, /* TKIP */ | |
76 | { 0x00, 0x0f, 0xac, 0x04 }, /* AES */ | |
77 | }; | |
78 | ||
679b687b AF |
79 | static void |
80 | _dbg_security_flags(int log_level, const char *func, const char *desc, | |
81 | struct mwifiex_private *priv, | |
82 | struct mwifiex_bssdescriptor *bss_desc) | |
83 | { | |
84 | _mwifiex_dbg(priv->adapter, log_level, | |
85 | "info: %s: %s:\twpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s\tEncMode=%#x privacy=%#x\n", | |
86 | func, desc, | |
87 | bss_desc->bcn_wpa_ie ? | |
88 | bss_desc->bcn_wpa_ie->vend_hdr.element_id : 0, | |
89 | bss_desc->bcn_rsn_ie ? | |
90 | bss_desc->bcn_rsn_ie->ieee_hdr.element_id : 0, | |
91 | priv->sec_info.wep_enabled ? "e" : "d", | |
92 | priv->sec_info.wpa_enabled ? "e" : "d", | |
93 | priv->sec_info.wpa2_enabled ? "e" : "d", | |
94 | priv->sec_info.encryption_mode, | |
95 | bss_desc->privacy); | |
96 | } | |
97 | #define dbg_security_flags(mask, desc, priv, bss_desc) \ | |
98 | _dbg_security_flags(MWIFIEX_DBG_##mask, desc, __func__, priv, bss_desc) | |
99 | ||
38329568 AF |
100 | static bool |
101 | has_ieee_hdr(struct ieee_types_generic *ie, u8 key) | |
102 | { | |
103 | return (ie && ie->ieee_hdr.element_id == key); | |
104 | } | |
105 | ||
106 | static bool | |
107 | has_vendor_hdr(struct ieee_types_vendor_specific *ie, u8 key) | |
108 | { | |
109 | return (ie && ie->vend_hdr.element_id == key); | |
110 | } | |
111 | ||
5e6e3a92 BZ |
112 | /* |
113 | * This function parses a given IE for a given OUI. | |
114 | * | |
115 | * This is used to parse a WPA/RSN IE to find if it has | |
116 | * a given oui in PTK. | |
117 | */ | |
118 | static u8 | |
119 | mwifiex_search_oui_in_ie(struct ie_body *iebody, u8 *oui) | |
120 | { | |
121 | u8 count; | |
122 | ||
123 | count = iebody->ptk_cnt[0]; | |
124 | ||
125 | /* There could be multiple OUIs for PTK hence | |
126 | 1) Take the length. | |
127 | 2) Check all the OUIs for AES. | |
128 | 3) If one of them is AES then pass success. */ | |
129 | while (count) { | |
130 | if (!memcmp(iebody->ptk_body, oui, sizeof(iebody->ptk_body))) | |
131 | return MWIFIEX_OUI_PRESENT; | |
132 | ||
133 | --count; | |
134 | if (count) | |
135 | iebody = (struct ie_body *) ((u8 *) iebody + | |
136 | sizeof(iebody->ptk_body)); | |
137 | } | |
138 | ||
139 | pr_debug("info: %s: OUI is not found in PTK\n", __func__); | |
140 | return MWIFIEX_OUI_NOT_PRESENT; | |
141 | } | |
142 | ||
143 | /* | |
144 | * This function checks if a given OUI is present in a RSN IE. | |
145 | * | |
146 | * The function first checks if a RSN IE is present or not in the | |
147 | * BSS descriptor. It tries to locate the OUI only if such an IE is | |
148 | * present. | |
149 | */ | |
150 | static u8 | |
151 | mwifiex_is_rsn_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher) | |
152 | { | |
270e58e8 YAP |
153 | u8 *oui; |
154 | struct ie_body *iebody; | |
5e6e3a92 BZ |
155 | u8 ret = MWIFIEX_OUI_NOT_PRESENT; |
156 | ||
38329568 | 157 | if (has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN)) { |
5e6e3a92 BZ |
158 | iebody = (struct ie_body *) |
159 | (((u8 *) bss_desc->bcn_rsn_ie->data) + | |
cff23cec | 160 | RSN_GTK_OUI_OFFSET); |
5e6e3a92 BZ |
161 | oui = &mwifiex_rsn_oui[cipher][0]; |
162 | ret = mwifiex_search_oui_in_ie(iebody, oui); | |
163 | if (ret) | |
164 | return ret; | |
165 | } | |
166 | return ret; | |
167 | } | |
168 | ||
169 | /* | |
170 | * This function checks if a given OUI is present in a WPA IE. | |
171 | * | |
172 | * The function first checks if a WPA IE is present or not in the | |
173 | * BSS descriptor. It tries to locate the OUI only if such an IE is | |
174 | * present. | |
175 | */ | |
176 | static u8 | |
177 | mwifiex_is_wpa_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher) | |
178 | { | |
270e58e8 YAP |
179 | u8 *oui; |
180 | struct ie_body *iebody; | |
5e6e3a92 BZ |
181 | u8 ret = MWIFIEX_OUI_NOT_PRESENT; |
182 | ||
38329568 | 183 | if (has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC)) { |
5e6e3a92 BZ |
184 | iebody = (struct ie_body *) bss_desc->bcn_wpa_ie->data; |
185 | oui = &mwifiex_wpa_oui[cipher][0]; | |
186 | ret = mwifiex_search_oui_in_ie(iebody, oui); | |
187 | if (ret) | |
188 | return ret; | |
189 | } | |
190 | return ret; | |
191 | } | |
192 | ||
193 | /* | |
194 | * This function compares two SSIDs and checks if they match. | |
195 | */ | |
196 | s32 | |
b9be5f39 | 197 | mwifiex_ssid_cmp(struct cfg80211_ssid *ssid1, struct cfg80211_ssid *ssid2) |
5e6e3a92 BZ |
198 | { |
199 | if (!ssid1 || !ssid2 || (ssid1->ssid_len != ssid2->ssid_len)) | |
200 | return -1; | |
201 | return memcmp(ssid1->ssid, ssid2->ssid, ssid1->ssid_len); | |
202 | } | |
203 | ||
5e6e3a92 BZ |
204 | /* |
205 | * This function checks if wapi is enabled in driver and scanned network is | |
206 | * compatible with it. | |
207 | */ | |
208 | static bool | |
cff23cec YAP |
209 | mwifiex_is_bss_wapi(struct mwifiex_private *priv, |
210 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 BZ |
211 | { |
212 | if (priv->sec_info.wapi_enabled && | |
38329568 | 213 | has_ieee_hdr(bss_desc->bcn_wapi_ie, WLAN_EID_BSS_AC_ACCESS_DELAY)) |
5e6e3a92 | 214 | return true; |
5e6e3a92 BZ |
215 | return false; |
216 | } | |
217 | ||
218 | /* | |
219 | * This function checks if driver is configured with no security mode and | |
220 | * scanned network is compatible with it. | |
221 | */ | |
222 | static bool | |
cff23cec YAP |
223 | mwifiex_is_bss_no_sec(struct mwifiex_private *priv, |
224 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 225 | { |
5eb02e44 | 226 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
0a233c98 | 227 | !priv->sec_info.wpa2_enabled && |
38329568 AF |
228 | !has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC) && |
229 | !has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN) && | |
cff23cec | 230 | !priv->sec_info.encryption_mode && !bss_desc->privacy) { |
5e6e3a92 BZ |
231 | return true; |
232 | } | |
233 | return false; | |
234 | } | |
235 | ||
236 | /* | |
237 | * This function checks if static WEP is enabled in driver and scanned network | |
238 | * is compatible with it. | |
239 | */ | |
240 | static bool | |
cff23cec YAP |
241 | mwifiex_is_bss_static_wep(struct mwifiex_private *priv, |
242 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 243 | { |
5eb02e44 AK |
244 | if (priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
245 | !priv->sec_info.wpa2_enabled && bss_desc->privacy) { | |
5e6e3a92 BZ |
246 | return true; |
247 | } | |
248 | return false; | |
249 | } | |
250 | ||
251 | /* | |
252 | * This function checks if wpa is enabled in driver and scanned network is | |
253 | * compatible with it. | |
254 | */ | |
255 | static bool | |
cff23cec YAP |
256 | mwifiex_is_bss_wpa(struct mwifiex_private *priv, |
257 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 258 | { |
5eb02e44 | 259 | if (!priv->sec_info.wep_enabled && priv->sec_info.wpa_enabled && |
0a233c98 | 260 | !priv->sec_info.wpa2_enabled && |
38329568 | 261 | has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC) |
5e6e3a92 BZ |
262 | /* |
263 | * Privacy bit may NOT be set in some APs like | |
264 | * LinkSys WRT54G && bss_desc->privacy | |
265 | */ | |
266 | ) { | |
679b687b | 267 | dbg_security_flags(INFO, "WPA", priv, bss_desc); |
5e6e3a92 BZ |
268 | return true; |
269 | } | |
270 | return false; | |
271 | } | |
272 | ||
273 | /* | |
274 | * This function checks if wpa2 is enabled in driver and scanned network is | |
275 | * compatible with it. | |
276 | */ | |
277 | static bool | |
cff23cec YAP |
278 | mwifiex_is_bss_wpa2(struct mwifiex_private *priv, |
279 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 280 | { |
0a233c98 | 281 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec | 282 | priv->sec_info.wpa2_enabled && |
38329568 | 283 | has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN)) { |
cff23cec YAP |
284 | /* |
285 | * Privacy bit may NOT be set in some APs like | |
286 | * LinkSys WRT54G && bss_desc->privacy | |
287 | */ | |
679b687b | 288 | dbg_security_flags(INFO, "WAP2", priv, bss_desc); |
5e6e3a92 BZ |
289 | return true; |
290 | } | |
291 | return false; | |
292 | } | |
293 | ||
294 | /* | |
295 | * This function checks if adhoc AES is enabled in driver and scanned network is | |
296 | * compatible with it. | |
297 | */ | |
298 | static bool | |
cff23cec YAP |
299 | mwifiex_is_bss_adhoc_aes(struct mwifiex_private *priv, |
300 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 301 | { |
5eb02e44 | 302 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec | 303 | !priv->sec_info.wpa2_enabled && |
38329568 AF |
304 | !has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC) && |
305 | !has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN) && | |
cff23cec | 306 | !priv->sec_info.encryption_mode && bss_desc->privacy) { |
5e6e3a92 BZ |
307 | return true; |
308 | } | |
309 | return false; | |
310 | } | |
311 | ||
312 | /* | |
313 | * This function checks if dynamic WEP is enabled in driver and scanned network | |
314 | * is compatible with it. | |
315 | */ | |
316 | static bool | |
cff23cec YAP |
317 | mwifiex_is_bss_dynamic_wep(struct mwifiex_private *priv, |
318 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 319 | { |
5eb02e44 | 320 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec | 321 | !priv->sec_info.wpa2_enabled && |
38329568 AF |
322 | !has_vendor_hdr(bss_desc->bcn_wpa_ie, WLAN_EID_VENDOR_SPECIFIC) && |
323 | !has_ieee_hdr(bss_desc->bcn_rsn_ie, WLAN_EID_RSN) && | |
cff23cec | 324 | priv->sec_info.encryption_mode && bss_desc->privacy) { |
679b687b | 325 | dbg_security_flags(INFO, "dynamic", priv, bss_desc); |
5e6e3a92 BZ |
326 | return true; |
327 | } | |
328 | return false; | |
329 | } | |
330 | ||
331 | /* | |
332 | * This function checks if a scanned network is compatible with the driver | |
333 | * settings. | |
334 | * | |
335 | * WEP WPA WPA2 ad-hoc encrypt Network | |
336 | * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible | |
337 | * 0 0 0 0 NONE 0 0 0 yes No security | |
338 | * 0 1 0 0 x 1x 1 x yes WPA (disable | |
339 | * HT if no AES) | |
340 | * 0 0 1 0 x 1x x 1 yes WPA2 (disable | |
341 | * HT if no AES) | |
342 | * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES | |
343 | * 1 0 0 0 NONE 1 0 0 yes Static WEP | |
344 | * (disable HT) | |
345 | * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP | |
346 | * | |
347 | * Compatibility is not matched while roaming, except for mode. | |
348 | */ | |
349 | static s32 | |
7c6fa2a8 AK |
350 | mwifiex_is_network_compatible(struct mwifiex_private *priv, |
351 | struct mwifiex_bssdescriptor *bss_desc, u32 mode) | |
5e6e3a92 BZ |
352 | { |
353 | struct mwifiex_adapter *adapter = priv->adapter; | |
5e6e3a92 | 354 | |
5e6e3a92 BZ |
355 | bss_desc->disable_11n = false; |
356 | ||
357 | /* Don't check for compatibility if roaming */ | |
cff23cec YAP |
358 | if (priv->media_connected && |
359 | (priv->bss_mode == NL80211_IFTYPE_STATION) && | |
360 | (bss_desc->bss_mode == NL80211_IFTYPE_STATION)) | |
7c6fa2a8 | 361 | return 0; |
5e6e3a92 BZ |
362 | |
363 | if (priv->wps.session_enable) { | |
acebe8c1 ZL |
364 | mwifiex_dbg(adapter, IOCTL, |
365 | "info: return success directly in WPS period\n"); | |
7c6fa2a8 | 366 | return 0; |
5e6e3a92 BZ |
367 | } |
368 | ||
2a7305c8 | 369 | if (bss_desc->chan_sw_ie_present) { |
acebe8c1 ZL |
370 | mwifiex_dbg(adapter, INFO, |
371 | "Don't connect to AP with WLAN_EID_CHANNEL_SWITCH\n"); | |
2a7305c8 AK |
372 | return -1; |
373 | } | |
374 | ||
cff23cec | 375 | if (mwifiex_is_bss_wapi(priv, bss_desc)) { |
acebe8c1 ZL |
376 | mwifiex_dbg(adapter, INFO, |
377 | "info: return success for WAPI AP\n"); | |
7c6fa2a8 | 378 | return 0; |
5e6e3a92 BZ |
379 | } |
380 | ||
381 | if (bss_desc->bss_mode == mode) { | |
cff23cec | 382 | if (mwifiex_is_bss_no_sec(priv, bss_desc)) { |
5e6e3a92 | 383 | /* No security */ |
7c6fa2a8 | 384 | return 0; |
cff23cec | 385 | } else if (mwifiex_is_bss_static_wep(priv, bss_desc)) { |
5e6e3a92 | 386 | /* Static WEP enabled */ |
acebe8c1 ZL |
387 | mwifiex_dbg(adapter, INFO, |
388 | "info: Disable 11n in WEP mode.\n"); | |
5e6e3a92 | 389 | bss_desc->disable_11n = true; |
7c6fa2a8 | 390 | return 0; |
cff23cec | 391 | } else if (mwifiex_is_bss_wpa(priv, bss_desc)) { |
5e6e3a92 | 392 | /* WPA enabled */ |
cff23cec YAP |
393 | if (((priv->adapter->config_bands & BAND_GN || |
394 | priv->adapter->config_bands & BAND_AN) && | |
395 | bss_desc->bcn_ht_cap) && | |
396 | !mwifiex_is_wpa_oui_present(bss_desc, | |
397 | CIPHER_SUITE_CCMP)) { | |
398 | ||
399 | if (mwifiex_is_wpa_oui_present | |
400 | (bss_desc, CIPHER_SUITE_TKIP)) { | |
acebe8c1 ZL |
401 | mwifiex_dbg(adapter, INFO, |
402 | "info: Disable 11n if AES\t" | |
403 | "is not supported by AP\n"); | |
5e6e3a92 BZ |
404 | bss_desc->disable_11n = true; |
405 | } else { | |
406 | return -1; | |
407 | } | |
408 | } | |
7c6fa2a8 | 409 | return 0; |
cff23cec | 410 | } else if (mwifiex_is_bss_wpa2(priv, bss_desc)) { |
5e6e3a92 | 411 | /* WPA2 enabled */ |
cff23cec YAP |
412 | if (((priv->adapter->config_bands & BAND_GN || |
413 | priv->adapter->config_bands & BAND_AN) && | |
414 | bss_desc->bcn_ht_cap) && | |
415 | !mwifiex_is_rsn_oui_present(bss_desc, | |
416 | CIPHER_SUITE_CCMP)) { | |
417 | ||
418 | if (mwifiex_is_rsn_oui_present | |
419 | (bss_desc, CIPHER_SUITE_TKIP)) { | |
acebe8c1 ZL |
420 | mwifiex_dbg(adapter, INFO, |
421 | "info: Disable 11n if AES\t" | |
422 | "is not supported by AP\n"); | |
5e6e3a92 BZ |
423 | bss_desc->disable_11n = true; |
424 | } else { | |
425 | return -1; | |
426 | } | |
427 | } | |
7c6fa2a8 | 428 | return 0; |
cff23cec | 429 | } else if (mwifiex_is_bss_adhoc_aes(priv, bss_desc)) { |
5e6e3a92 | 430 | /* Ad-hoc AES enabled */ |
7c6fa2a8 | 431 | return 0; |
cff23cec | 432 | } else if (mwifiex_is_bss_dynamic_wep(priv, bss_desc)) { |
5e6e3a92 | 433 | /* Dynamic WEP enabled */ |
7c6fa2a8 | 434 | return 0; |
5e6e3a92 BZ |
435 | } |
436 | ||
437 | /* Security doesn't match */ | |
679b687b | 438 | dbg_security_flags(ERROR, "failed", priv, bss_desc); |
5e6e3a92 BZ |
439 | return -1; |
440 | } | |
441 | ||
442 | /* Mode doesn't match */ | |
443 | return -1; | |
444 | } | |
445 | ||
5e6e3a92 BZ |
446 | /* |
447 | * This function creates a channel list for the driver to scan, based | |
448 | * on region/band information. | |
449 | * | |
450 | * This routine is used for any scan that is not provided with a | |
451 | * specific channel list to scan. | |
452 | */ | |
658f37b7 | 453 | static int |
5e6e3a92 | 454 | mwifiex_scan_create_channel_list(struct mwifiex_private *priv, |
cff23cec YAP |
455 | const struct mwifiex_user_scan_cfg |
456 | *user_scan_in, | |
457 | struct mwifiex_chan_scan_param_set | |
458 | *scan_chan_list, | |
459 | u8 filtered_scan) | |
5e6e3a92 | 460 | { |
57fbcce3 | 461 | enum nl80211_band band; |
5e6e3a92 BZ |
462 | struct ieee80211_supported_band *sband; |
463 | struct ieee80211_channel *ch; | |
464 | struct mwifiex_adapter *adapter = priv->adapter; | |
465 | int chan_idx = 0, i; | |
5e6e3a92 | 466 | |
57fbcce3 | 467 | for (band = 0; (band < NUM_NL80211_BANDS) ; band++) { |
5e6e3a92 | 468 | |
4facc34a | 469 | if (!priv->wdev.wiphy->bands[band]) |
5e6e3a92 BZ |
470 | continue; |
471 | ||
4facc34a | 472 | sband = priv->wdev.wiphy->bands[band]; |
5e6e3a92 | 473 | |
d06b7b9e | 474 | for (i = 0; (i < sband->n_channels) ; i++) { |
5e6e3a92 BZ |
475 | ch = &sband->channels[i]; |
476 | if (ch->flags & IEEE80211_CHAN_DISABLED) | |
477 | continue; | |
478 | scan_chan_list[chan_idx].radio_type = band; | |
186630c2 | 479 | |
5e6e3a92 | 480 | if (user_scan_in && |
cff23cec | 481 | user_scan_in->chan_list[0].scan_time) |
5e6e3a92 BZ |
482 | scan_chan_list[chan_idx].max_scan_time = |
483 | cpu_to_le16((u16) user_scan_in-> | |
484 | chan_list[0].scan_time); | |
8fe02e16 | 485 | else if (ch->flags & IEEE80211_CHAN_NO_IR) |
5e6e3a92 BZ |
486 | scan_chan_list[chan_idx].max_scan_time = |
487 | cpu_to_le16(adapter->passive_scan_time); | |
488 | else | |
489 | scan_chan_list[chan_idx].max_scan_time = | |
490 | cpu_to_le16(adapter->active_scan_time); | |
186630c2 | 491 | |
8fe02e16 | 492 | if (ch->flags & IEEE80211_CHAN_NO_IR) |
5e6e3a92 | 493 | scan_chan_list[chan_idx].chan_scan_mode_bitmap |
2375fa2b | 494 | |= (MWIFIEX_PASSIVE_SCAN | |
495 | MWIFIEX_HIDDEN_SSID_REPORT); | |
5e6e3a92 BZ |
496 | else |
497 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
498 | &= ~MWIFIEX_PASSIVE_SCAN; | |
499 | scan_chan_list[chan_idx].chan_number = | |
500 | (u32) ch->hw_value; | |
1b499cb7 AK |
501 | |
502 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
503 | |= MWIFIEX_DISABLE_CHAN_FILT; | |
504 | ||
5e6e3a92 BZ |
505 | if (filtered_scan) { |
506 | scan_chan_list[chan_idx].max_scan_time = | |
507 | cpu_to_le16(adapter->specific_scan_time); | |
5e6e3a92 | 508 | } |
d06b7b9e | 509 | chan_idx++; |
5e6e3a92 BZ |
510 | } |
511 | ||
512 | } | |
658f37b7 | 513 | return chan_idx; |
5e6e3a92 BZ |
514 | } |
515 | ||
0c9b7f22 XH |
516 | /* This function creates a channel list tlv for bgscan config, based |
517 | * on region/band information. | |
518 | */ | |
519 | static int | |
520 | mwifiex_bgscan_create_channel_list(struct mwifiex_private *priv, | |
521 | const struct mwifiex_bg_scan_cfg | |
522 | *bgscan_cfg_in, | |
523 | struct mwifiex_chan_scan_param_set | |
524 | *scan_chan_list) | |
525 | { | |
57fbcce3 | 526 | enum nl80211_band band; |
0c9b7f22 XH |
527 | struct ieee80211_supported_band *sband; |
528 | struct ieee80211_channel *ch; | |
529 | struct mwifiex_adapter *adapter = priv->adapter; | |
530 | int chan_idx = 0, i; | |
531 | ||
57fbcce3 | 532 | for (band = 0; (band < NUM_NL80211_BANDS); band++) { |
0c9b7f22 XH |
533 | if (!priv->wdev.wiphy->bands[band]) |
534 | continue; | |
535 | ||
536 | sband = priv->wdev.wiphy->bands[band]; | |
537 | ||
538 | for (i = 0; (i < sband->n_channels) ; i++) { | |
539 | ch = &sband->channels[i]; | |
540 | if (ch->flags & IEEE80211_CHAN_DISABLED) | |
541 | continue; | |
542 | scan_chan_list[chan_idx].radio_type = band; | |
543 | ||
544 | if (bgscan_cfg_in->chan_list[0].scan_time) | |
545 | scan_chan_list[chan_idx].max_scan_time = | |
546 | cpu_to_le16((u16)bgscan_cfg_in-> | |
547 | chan_list[0].scan_time); | |
548 | else if (ch->flags & IEEE80211_CHAN_NO_IR) | |
549 | scan_chan_list[chan_idx].max_scan_time = | |
550 | cpu_to_le16(adapter->passive_scan_time); | |
551 | else | |
552 | scan_chan_list[chan_idx].max_scan_time = | |
553 | cpu_to_le16(adapter-> | |
554 | specific_scan_time); | |
555 | ||
556 | if (ch->flags & IEEE80211_CHAN_NO_IR) | |
557 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
558 | |= MWIFIEX_PASSIVE_SCAN; | |
559 | else | |
560 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
561 | &= ~MWIFIEX_PASSIVE_SCAN; | |
562 | ||
563 | scan_chan_list[chan_idx].chan_number = | |
564 | (u32)ch->hw_value; | |
565 | chan_idx++; | |
566 | } | |
567 | } | |
568 | return chan_idx; | |
569 | } | |
570 | ||
78dfca62 AP |
571 | /* This function appends rate TLV to scan config command. */ |
572 | static int | |
573 | mwifiex_append_rate_tlv(struct mwifiex_private *priv, | |
574 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
575 | u8 radio) | |
576 | { | |
577 | struct mwifiex_ie_types_rates_param_set *rates_tlv; | |
578 | u8 rates[MWIFIEX_SUPPORTED_RATES], *tlv_pos; | |
579 | u32 rates_size; | |
580 | ||
581 | memset(rates, 0, sizeof(rates)); | |
582 | ||
583 | tlv_pos = (u8 *)scan_cfg_out->tlv_buf + scan_cfg_out->tlv_buf_len; | |
584 | ||
585 | if (priv->scan_request) | |
586 | rates_size = mwifiex_get_rates_from_cfg80211(priv, rates, | |
587 | radio); | |
588 | else | |
589 | rates_size = mwifiex_get_supported_rates(priv, rates); | |
590 | ||
acebe8c1 ZL |
591 | mwifiex_dbg(priv->adapter, CMD, |
592 | "info: SCAN_CMD: Rates size = %d\n", | |
78dfca62 AP |
593 | rates_size); |
594 | rates_tlv = (struct mwifiex_ie_types_rates_param_set *)tlv_pos; | |
595 | rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES); | |
596 | rates_tlv->header.len = cpu_to_le16((u16) rates_size); | |
597 | memcpy(rates_tlv->rates, rates, rates_size); | |
598 | scan_cfg_out->tlv_buf_len += sizeof(rates_tlv->header) + rates_size; | |
599 | ||
600 | return rates_size; | |
601 | } | |
602 | ||
5e6e3a92 BZ |
603 | /* |
604 | * This function constructs and sends multiple scan config commands to | |
605 | * the firmware. | |
606 | * | |
607 | * Previous routines in the code flow have created a scan command configuration | |
608 | * with any requested TLVs. This function splits the channel TLV into maximum | |
609 | * channels supported per scan lists and sends the portion of the channel TLV, | |
610 | * along with the other TLVs, to the firmware. | |
611 | */ | |
612 | static int | |
600f5d90 | 613 | mwifiex_scan_channel_list(struct mwifiex_private *priv, |
5e6e3a92 BZ |
614 | u32 max_chan_per_scan, u8 filtered_scan, |
615 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
616 | struct mwifiex_ie_types_chan_list_param_set | |
617 | *chan_tlv_out, | |
618 | struct mwifiex_chan_scan_param_set *scan_chan_list) | |
619 | { | |
1845bd3a | 620 | struct mwifiex_adapter *adapter = priv->adapter; |
5e6e3a92 BZ |
621 | int ret = 0; |
622 | struct mwifiex_chan_scan_param_set *tmp_chan_list; | |
623 | struct mwifiex_chan_scan_param_set *start_chan; | |
21f58d20 | 624 | u32 tlv_idx, rates_size, cmd_no; |
5e6e3a92 BZ |
625 | u32 total_scan_time; |
626 | u32 done_early; | |
78dfca62 | 627 | u8 radio_type; |
5e6e3a92 BZ |
628 | |
629 | if (!scan_cfg_out || !chan_tlv_out || !scan_chan_list) { | |
acebe8c1 ZL |
630 | mwifiex_dbg(priv->adapter, ERROR, |
631 | "info: Scan: Null detect: %p, %p, %p\n", | |
632 | scan_cfg_out, chan_tlv_out, scan_chan_list); | |
5e6e3a92 BZ |
633 | return -1; |
634 | } | |
635 | ||
b887664d AK |
636 | /* Check csa channel expiry before preparing scan list */ |
637 | mwifiex_11h_get_csa_closed_channel(priv); | |
638 | ||
5e6e3a92 BZ |
639 | chan_tlv_out->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); |
640 | ||
641 | /* Set the temp channel struct pointer to the start of the desired | |
642 | list */ | |
643 | tmp_chan_list = scan_chan_list; | |
644 | ||
645 | /* Loop through the desired channel list, sending a new firmware scan | |
646 | commands for each max_chan_per_scan channels (or for 1,6,11 | |
647 | individually if configured accordingly) */ | |
648 | while (tmp_chan_list->chan_number) { | |
649 | ||
650 | tlv_idx = 0; | |
651 | total_scan_time = 0; | |
78dfca62 | 652 | radio_type = 0; |
5e6e3a92 BZ |
653 | chan_tlv_out->header.len = 0; |
654 | start_chan = tmp_chan_list; | |
655 | done_early = false; | |
656 | ||
657 | /* | |
658 | * Construct the Channel TLV for the scan command. Continue to | |
659 | * insert channel TLVs until: | |
660 | * - the tlv_idx hits the maximum configured per scan command | |
661 | * - the next channel to insert is 0 (end of desired channel | |
662 | * list) | |
663 | * - done_early is set (controlling individual scanning of | |
664 | * 1,6,11) | |
665 | */ | |
cff23cec YAP |
666 | while (tlv_idx < max_chan_per_scan && |
667 | tmp_chan_list->chan_number && !done_early) { | |
5e6e3a92 | 668 | |
b887664d AK |
669 | if (tmp_chan_list->chan_number == priv->csa_chan) { |
670 | tmp_chan_list++; | |
671 | continue; | |
672 | } | |
673 | ||
78dfca62 | 674 | radio_type = tmp_chan_list->radio_type; |
acebe8c1 ZL |
675 | mwifiex_dbg(priv->adapter, INFO, |
676 | "info: Scan: Chan(%3d), Radio(%d),\t" | |
677 | "Mode(%d, %d), Dur(%d)\n", | |
678 | tmp_chan_list->chan_number, | |
679 | tmp_chan_list->radio_type, | |
680 | tmp_chan_list->chan_scan_mode_bitmap | |
681 | & MWIFIEX_PASSIVE_SCAN, | |
682 | (tmp_chan_list->chan_scan_mode_bitmap | |
683 | & MWIFIEX_DISABLE_CHAN_FILT) >> 1, | |
684 | le16_to_cpu(tmp_chan_list->max_scan_time)); | |
5e6e3a92 BZ |
685 | |
686 | /* Copy the current channel TLV to the command being | |
687 | prepared */ | |
688 | memcpy(chan_tlv_out->chan_scan_param + tlv_idx, | |
689 | tmp_chan_list, | |
690 | sizeof(chan_tlv_out->chan_scan_param)); | |
691 | ||
692 | /* Increment the TLV header length by the size | |
693 | appended */ | |
5570a914 WY |
694 | le16_add_cpu(&chan_tlv_out->header.len, |
695 | sizeof(chan_tlv_out->chan_scan_param)); | |
5e6e3a92 BZ |
696 | |
697 | /* | |
698 | * The tlv buffer length is set to the number of bytes | |
699 | * of the between the channel tlv pointer and the start | |
700 | * of the tlv buffer. This compensates for any TLVs | |
701 | * that were appended before the channel list. | |
702 | */ | |
703 | scan_cfg_out->tlv_buf_len = (u32) ((u8 *) chan_tlv_out - | |
704 | scan_cfg_out->tlv_buf); | |
705 | ||
706 | /* Add the size of the channel tlv header and the data | |
707 | length */ | |
708 | scan_cfg_out->tlv_buf_len += | |
709 | (sizeof(chan_tlv_out->header) | |
710 | + le16_to_cpu(chan_tlv_out->header.len)); | |
711 | ||
712 | /* Increment the index to the channel tlv we are | |
713 | constructing */ | |
714 | tlv_idx++; | |
715 | ||
716 | /* Count the total scan time per command */ | |
717 | total_scan_time += | |
718 | le16_to_cpu(tmp_chan_list->max_scan_time); | |
719 | ||
720 | done_early = false; | |
721 | ||
722 | /* Stop the loop if the *current* channel is in the | |
723 | 1,6,11 set and we are not filtering on a BSSID | |
724 | or SSID. */ | |
cff23cec YAP |
725 | if (!filtered_scan && |
726 | (tmp_chan_list->chan_number == 1 || | |
727 | tmp_chan_list->chan_number == 6 || | |
728 | tmp_chan_list->chan_number == 11)) | |
5e6e3a92 BZ |
729 | done_early = true; |
730 | ||
731 | /* Increment the tmp pointer to the next channel to | |
732 | be scanned */ | |
733 | tmp_chan_list++; | |
734 | ||
735 | /* Stop the loop if the *next* channel is in the 1,6,11 | |
736 | set. This will cause it to be the only channel | |
737 | scanned on the next interation */ | |
cff23cec YAP |
738 | if (!filtered_scan && |
739 | (tmp_chan_list->chan_number == 1 || | |
740 | tmp_chan_list->chan_number == 6 || | |
741 | tmp_chan_list->chan_number == 11)) | |
5e6e3a92 BZ |
742 | done_early = true; |
743 | } | |
744 | ||
745 | /* The total scan time should be less than scan command timeout | |
746 | value */ | |
747 | if (total_scan_time > MWIFIEX_MAX_TOTAL_SCAN_TIME) { | |
acebe8c1 ZL |
748 | mwifiex_dbg(priv->adapter, ERROR, |
749 | "total scan time %dms\t" | |
750 | "is over limit (%dms), scan skipped\n", | |
751 | total_scan_time, | |
752 | MWIFIEX_MAX_TOTAL_SCAN_TIME); | |
5e6e3a92 BZ |
753 | ret = -1; |
754 | break; | |
755 | } | |
756 | ||
78dfca62 AP |
757 | rates_size = mwifiex_append_rate_tlv(priv, scan_cfg_out, |
758 | radio_type); | |
759 | ||
5e6e3a92 BZ |
760 | priv->adapter->scan_channels = start_chan; |
761 | ||
762 | /* Send the scan command to the firmware with the specified | |
763 | cfg */ | |
21f58d20 AK |
764 | if (priv->adapter->ext_scan) |
765 | cmd_no = HostCmd_CMD_802_11_SCAN_EXT; | |
766 | else | |
767 | cmd_no = HostCmd_CMD_802_11_SCAN; | |
768 | ||
fa0ecbb9 BZ |
769 | ret = mwifiex_send_cmd(priv, cmd_no, HostCmd_ACT_GEN_SET, |
770 | 0, scan_cfg_out, false); | |
78dfca62 AP |
771 | |
772 | /* rate IE is updated per scan command but same starting | |
773 | * pointer is used each time so that rate IE from earlier | |
774 | * scan_cfg_out->buf is overwritten with new one. | |
775 | */ | |
776 | scan_cfg_out->tlv_buf_len -= | |
777 | sizeof(struct mwifiex_ie_types_header) + rates_size; | |
778 | ||
1845bd3a | 779 | if (ret) { |
c70ca8cb | 780 | mwifiex_cancel_pending_scan_cmd(adapter); |
5e6e3a92 | 781 | break; |
1845bd3a | 782 | } |
5e6e3a92 BZ |
783 | } |
784 | ||
785 | if (ret) | |
786 | return -1; | |
787 | ||
788 | return 0; | |
789 | } | |
790 | ||
791 | /* | |
792 | * This function constructs a scan command configuration structure to use | |
793 | * in scan commands. | |
794 | * | |
795 | * Application layer or other functions can invoke network scanning | |
796 | * with a scan configuration supplied in a user scan configuration structure. | |
797 | * This structure is used as the basis of one or many scan command configuration | |
798 | * commands that are sent to the command processing module and eventually to the | |
799 | * firmware. | |
800 | * | |
801 | * This function creates a scan command configuration structure based on the | |
802 | * following user supplied parameters (if present): | |
803 | * - SSID filter | |
804 | * - BSSID filter | |
805 | * - Number of Probes to be sent | |
806 | * - Channel list | |
807 | * | |
808 | * If the SSID or BSSID filter is not present, the filter is disabled/cleared. | |
809 | * If the number of probes is not set, adapter default setting is used. | |
810 | */ | |
811 | static void | |
cff23cec YAP |
812 | mwifiex_config_scan(struct mwifiex_private *priv, |
813 | const struct mwifiex_user_scan_cfg *user_scan_in, | |
814 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
815 | struct mwifiex_ie_types_chan_list_param_set **chan_list_out, | |
816 | struct mwifiex_chan_scan_param_set *scan_chan_list, | |
817 | u8 *max_chan_per_scan, u8 *filtered_scan, | |
818 | u8 *scan_current_only) | |
5e6e3a92 BZ |
819 | { |
820 | struct mwifiex_adapter *adapter = priv->adapter; | |
821 | struct mwifiex_ie_types_num_probes *num_probes_tlv; | |
cb91be87 | 822 | struct mwifiex_ie_types_scan_chan_gap *chan_gap_tlv; |
c2a8f0ff | 823 | struct mwifiex_ie_types_random_mac *random_mac_tlv; |
5e6e3a92 | 824 | struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv; |
21f58d20 | 825 | struct mwifiex_ie_types_bssid_list *bssid_tlv; |
5e6e3a92 BZ |
826 | u8 *tlv_pos; |
827 | u32 num_probes; | |
828 | u32 ssid_len; | |
829 | u32 chan_idx; | |
658f37b7 | 830 | u32 chan_num; |
5e6e3a92 BZ |
831 | u32 scan_type; |
832 | u16 scan_dur; | |
833 | u8 channel; | |
834 | u8 radio_type; | |
be0b281e | 835 | int i; |
5e6e3a92 | 836 | u8 ssid_filter; |
5e6e3a92 | 837 | struct mwifiex_ie_types_htcap *ht_cap; |
40d7412b | 838 | struct mwifiex_ie_types_bss_mode *bss_mode; |
c2a8f0ff | 839 | const u8 zero_mac[6] = {0, 0, 0, 0, 0, 0}; |
5e6e3a92 BZ |
840 | |
841 | /* The tlv_buf_len is calculated for each scan command. The TLVs added | |
842 | in this routine will be preserved since the routine that sends the | |
843 | command will append channelTLVs at *chan_list_out. The difference | |
844 | between the *chan_list_out and the tlv_buf start will be used to | |
845 | calculate the size of anything we add in this routine. */ | |
846 | scan_cfg_out->tlv_buf_len = 0; | |
847 | ||
848 | /* Running tlv pointer. Assigned to chan_list_out at end of function | |
849 | so later routines know where channels can be added to the command | |
850 | buf */ | |
851 | tlv_pos = scan_cfg_out->tlv_buf; | |
852 | ||
853 | /* Initialize the scan as un-filtered; the flag is later set to TRUE | |
854 | below if a SSID or BSSID filter is sent in the command */ | |
855 | *filtered_scan = false; | |
856 | ||
857 | /* Initialize the scan as not being only on the current channel. If | |
858 | the channel list is customized, only contains one channel, and is | |
859 | the active channel, this is set true and data flow is not halted. */ | |
860 | *scan_current_only = false; | |
861 | ||
862 | if (user_scan_in) { | |
863 | ||
864 | /* Default the ssid_filter flag to TRUE, set false under | |
865 | certain wildcard conditions and qualified by the existence | |
866 | of an SSID list before marking the scan as filtered */ | |
867 | ssid_filter = true; | |
868 | ||
869 | /* Set the BSS type scan filter, use Adapter setting if | |
870 | unset */ | |
871 | scan_cfg_out->bss_mode = | |
2ccf7cef | 872 | (u8)(user_scan_in->bss_mode ?: adapter->scan_mode); |
5e6e3a92 BZ |
873 | |
874 | /* Set the number of probes to send, use Adapter setting | |
875 | if unset */ | |
2ccf7cef | 876 | num_probes = user_scan_in->num_probes ?: adapter->scan_probes; |
5e6e3a92 BZ |
877 | |
878 | /* | |
879 | * Set the BSSID filter to the incoming configuration, | |
880 | * if non-zero. If not set, it will remain disabled | |
881 | * (all zeros). | |
882 | */ | |
883 | memcpy(scan_cfg_out->specific_bssid, | |
884 | user_scan_in->specific_bssid, | |
885 | sizeof(scan_cfg_out->specific_bssid)); | |
886 | ||
21f58d20 AK |
887 | if (adapter->ext_scan && |
888 | !is_zero_ether_addr(scan_cfg_out->specific_bssid)) { | |
889 | bssid_tlv = | |
890 | (struct mwifiex_ie_types_bssid_list *)tlv_pos; | |
891 | bssid_tlv->header.type = cpu_to_le16(TLV_TYPE_BSSID); | |
892 | bssid_tlv->header.len = cpu_to_le16(ETH_ALEN); | |
893 | memcpy(bssid_tlv->bssid, user_scan_in->specific_bssid, | |
894 | ETH_ALEN); | |
895 | tlv_pos += sizeof(struct mwifiex_ie_types_bssid_list); | |
896 | } | |
897 | ||
be0b281e AK |
898 | for (i = 0; i < user_scan_in->num_ssids; i++) { |
899 | ssid_len = user_scan_in->ssid_list[i].ssid_len; | |
5e6e3a92 BZ |
900 | |
901 | wildcard_ssid_tlv = | |
902 | (struct mwifiex_ie_types_wildcard_ssid_params *) | |
903 | tlv_pos; | |
904 | wildcard_ssid_tlv->header.type = | |
905 | cpu_to_le16(TLV_TYPE_WILDCARDSSID); | |
906 | wildcard_ssid_tlv->header.len = cpu_to_le16( | |
907 | (u16) (ssid_len + sizeof(wildcard_ssid_tlv-> | |
908 | max_ssid_length))); | |
fada1058 | 909 | |
be0b281e AK |
910 | /* |
911 | * max_ssid_length = 0 tells firmware to perform | |
912 | * specific scan for the SSID filled, whereas | |
913 | * max_ssid_length = IEEE80211_MAX_SSID_LEN is for | |
914 | * wildcard scan. | |
915 | */ | |
916 | if (ssid_len) | |
917 | wildcard_ssid_tlv->max_ssid_length = 0; | |
918 | else | |
919 | wildcard_ssid_tlv->max_ssid_length = | |
920 | IEEE80211_MAX_SSID_LEN; | |
5e6e3a92 | 921 | |
0c6303cc AN |
922 | if (!memcmp(user_scan_in->ssid_list[i].ssid, |
923 | "DIRECT-", 7)) | |
924 | wildcard_ssid_tlv->max_ssid_length = 0xfe; | |
925 | ||
5e6e3a92 | 926 | memcpy(wildcard_ssid_tlv->ssid, |
be0b281e | 927 | user_scan_in->ssid_list[i].ssid, ssid_len); |
5e6e3a92 BZ |
928 | |
929 | tlv_pos += (sizeof(wildcard_ssid_tlv->header) | |
930 | + le16_to_cpu(wildcard_ssid_tlv->header.len)); | |
931 | ||
acebe8c1 ZL |
932 | mwifiex_dbg(adapter, INFO, |
933 | "info: scan: ssid[%d]: %s, %d\n", | |
934 | i, wildcard_ssid_tlv->ssid, | |
935 | wildcard_ssid_tlv->max_ssid_length); | |
5e6e3a92 BZ |
936 | |
937 | /* Empty wildcard ssid with a maxlen will match many or | |
938 | potentially all SSIDs (maxlen == 32), therefore do | |
939 | not treat the scan as | |
940 | filtered. */ | |
941 | if (!ssid_len && wildcard_ssid_tlv->max_ssid_length) | |
942 | ssid_filter = false; | |
5e6e3a92 BZ |
943 | } |
944 | ||
945 | /* | |
946 | * The default number of channels sent in the command is low to | |
947 | * ensure the response buffer from the firmware does not | |
948 | * truncate scan results. That is not an issue with an SSID | |
949 | * or BSSID filter applied to the scan results in the firmware. | |
950 | */ | |
cff23cec | 951 | if ((i && ssid_filter) || |
84f6a95a | 952 | !is_zero_ether_addr(scan_cfg_out->specific_bssid)) |
5e6e3a92 | 953 | *filtered_scan = true; |
8eda10ea AP |
954 | |
955 | if (user_scan_in->scan_chan_gap) { | |
acebe8c1 ZL |
956 | mwifiex_dbg(adapter, INFO, |
957 | "info: scan: channel gap = %d\n", | |
958 | user_scan_in->scan_chan_gap); | |
8eda10ea AP |
959 | *max_chan_per_scan = |
960 | MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN; | |
961 | ||
962 | chan_gap_tlv = (void *)tlv_pos; | |
963 | chan_gap_tlv->header.type = | |
964 | cpu_to_le16(TLV_TYPE_SCAN_CHANNEL_GAP); | |
965 | chan_gap_tlv->header.len = | |
966 | cpu_to_le16(sizeof(chan_gap_tlv->chan_gap)); | |
967 | chan_gap_tlv->chan_gap = | |
968 | cpu_to_le16((user_scan_in->scan_chan_gap)); | |
969 | tlv_pos += | |
970 | sizeof(struct mwifiex_ie_types_scan_chan_gap); | |
971 | } | |
c2a8f0ff GB |
972 | |
973 | if (!ether_addr_equal(user_scan_in->random_mac, zero_mac)) { | |
974 | random_mac_tlv = (void *)tlv_pos; | |
975 | random_mac_tlv->header.type = | |
976 | cpu_to_le16(TLV_TYPE_RANDOM_MAC); | |
977 | random_mac_tlv->header.len = | |
978 | cpu_to_le16(sizeof(random_mac_tlv->mac)); | |
979 | ether_addr_copy(random_mac_tlv->mac, | |
980 | user_scan_in->random_mac); | |
981 | tlv_pos += | |
982 | sizeof(struct mwifiex_ie_types_random_mac); | |
983 | } | |
5e6e3a92 BZ |
984 | } else { |
985 | scan_cfg_out->bss_mode = (u8) adapter->scan_mode; | |
986 | num_probes = adapter->scan_probes; | |
987 | } | |
988 | ||
989 | /* | |
990 | * If a specific BSSID or SSID is used, the number of channels in the | |
991 | * scan command will be increased to the absolute maximum. | |
992 | */ | |
993 | if (*filtered_scan) | |
994 | *max_chan_per_scan = MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN; | |
995 | else | |
658f37b7 | 996 | *max_chan_per_scan = MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD; |
5e6e3a92 | 997 | |
40d7412b AN |
998 | if (adapter->ext_scan) { |
999 | bss_mode = (struct mwifiex_ie_types_bss_mode *)tlv_pos; | |
1000 | bss_mode->header.type = cpu_to_le16(TLV_TYPE_BSS_MODE); | |
1001 | bss_mode->header.len = cpu_to_le16(sizeof(bss_mode->bss_mode)); | |
1002 | bss_mode->bss_mode = scan_cfg_out->bss_mode; | |
1003 | tlv_pos += sizeof(bss_mode->header) + | |
1004 | le16_to_cpu(bss_mode->header.len); | |
1005 | } | |
1006 | ||
5e6e3a92 BZ |
1007 | /* If the input config or adapter has the number of Probes set, |
1008 | add tlv */ | |
1009 | if (num_probes) { | |
1010 | ||
acebe8c1 ZL |
1011 | mwifiex_dbg(adapter, INFO, |
1012 | "info: scan: num_probes = %d\n", | |
1013 | num_probes); | |
5e6e3a92 BZ |
1014 | |
1015 | num_probes_tlv = (struct mwifiex_ie_types_num_probes *) tlv_pos; | |
1016 | num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); | |
1017 | num_probes_tlv->header.len = | |
1018 | cpu_to_le16(sizeof(num_probes_tlv->num_probes)); | |
1019 | num_probes_tlv->num_probes = cpu_to_le16((u16) num_probes); | |
1020 | ||
1021 | tlv_pos += sizeof(num_probes_tlv->header) + | |
1022 | le16_to_cpu(num_probes_tlv->header.len); | |
1023 | ||
1024 | } | |
1025 | ||
cff23cec YAP |
1026 | if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) && |
1027 | (priv->adapter->config_bands & BAND_GN || | |
1028 | priv->adapter->config_bands & BAND_AN)) { | |
5e6e3a92 BZ |
1029 | ht_cap = (struct mwifiex_ie_types_htcap *) tlv_pos; |
1030 | memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap)); | |
1031 | ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); | |
1032 | ht_cap->header.len = | |
1033 | cpu_to_le16(sizeof(struct ieee80211_ht_cap)); | |
a46b7b5c AK |
1034 | radio_type = |
1035 | mwifiex_band_to_radio_type(priv->adapter->config_bands); | |
341b8800 | 1036 | mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap); |
5e6e3a92 BZ |
1037 | tlv_pos += sizeof(struct mwifiex_ie_types_htcap); |
1038 | } | |
1039 | ||
1040 | /* Append vendor specific IE TLV */ | |
1041 | mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_SCAN, &tlv_pos); | |
1042 | ||
1043 | /* | |
1044 | * Set the output for the channel TLV to the address in the tlv buffer | |
1045 | * past any TLVs that were added in this function (SSID, num_probes). | |
1046 | * Channel TLVs will be added past this for each scan command, | |
1047 | * preserving the TLVs that were previously added. | |
1048 | */ | |
1049 | *chan_list_out = | |
1050 | (struct mwifiex_ie_types_chan_list_param_set *) tlv_pos; | |
1051 | ||
1052 | if (user_scan_in && user_scan_in->chan_list[0].chan_number) { | |
1053 | ||
acebe8c1 ZL |
1054 | mwifiex_dbg(adapter, INFO, |
1055 | "info: Scan: Using supplied channel list\n"); | |
5e6e3a92 BZ |
1056 | |
1057 | for (chan_idx = 0; | |
cff23cec YAP |
1058 | chan_idx < MWIFIEX_USER_SCAN_CHAN_MAX && |
1059 | user_scan_in->chan_list[chan_idx].chan_number; | |
5e6e3a92 BZ |
1060 | chan_idx++) { |
1061 | ||
1062 | channel = user_scan_in->chan_list[chan_idx].chan_number; | |
948ad6b3 | 1063 | scan_chan_list[chan_idx].chan_number = channel; |
5e6e3a92 BZ |
1064 | |
1065 | radio_type = | |
1066 | user_scan_in->chan_list[chan_idx].radio_type; | |
948ad6b3 | 1067 | scan_chan_list[chan_idx].radio_type = radio_type; |
5e6e3a92 BZ |
1068 | |
1069 | scan_type = user_scan_in->chan_list[chan_idx].scan_type; | |
1070 | ||
1071 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
948ad6b3 | 1072 | scan_chan_list[chan_idx].chan_scan_mode_bitmap |
2375fa2b | 1073 | |= (MWIFIEX_PASSIVE_SCAN | |
1074 | MWIFIEX_HIDDEN_SSID_REPORT); | |
5e6e3a92 | 1075 | else |
948ad6b3 | 1076 | scan_chan_list[chan_idx].chan_scan_mode_bitmap |
5e6e3a92 BZ |
1077 | &= ~MWIFIEX_PASSIVE_SCAN; |
1078 | ||
1b499cb7 AK |
1079 | scan_chan_list[chan_idx].chan_scan_mode_bitmap |
1080 | |= MWIFIEX_DISABLE_CHAN_FILT; | |
f3e1af3e | 1081 | |
5e6e3a92 BZ |
1082 | if (user_scan_in->chan_list[chan_idx].scan_time) { |
1083 | scan_dur = (u16) user_scan_in-> | |
1084 | chan_list[chan_idx].scan_time; | |
1085 | } else { | |
1086 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
1087 | scan_dur = adapter->passive_scan_time; | |
1088 | else if (*filtered_scan) | |
1089 | scan_dur = adapter->specific_scan_time; | |
1090 | else | |
1091 | scan_dur = adapter->active_scan_time; | |
1092 | } | |
1093 | ||
948ad6b3 | 1094 | scan_chan_list[chan_idx].min_scan_time = |
5e6e3a92 | 1095 | cpu_to_le16(scan_dur); |
948ad6b3 | 1096 | scan_chan_list[chan_idx].max_scan_time = |
5e6e3a92 BZ |
1097 | cpu_to_le16(scan_dur); |
1098 | } | |
1099 | ||
1100 | /* Check if we are only scanning the current channel */ | |
cff23cec YAP |
1101 | if ((chan_idx == 1) && |
1102 | (user_scan_in->chan_list[0].chan_number == | |
1103 | priv->curr_bss_params.bss_descriptor.channel)) { | |
5e6e3a92 | 1104 | *scan_current_only = true; |
acebe8c1 ZL |
1105 | mwifiex_dbg(adapter, INFO, |
1106 | "info: Scan: Scanning current channel only\n"); | |
5e6e3a92 | 1107 | } |
658f37b7 | 1108 | chan_num = chan_idx; |
5e6e3a92 | 1109 | } else { |
acebe8c1 ZL |
1110 | mwifiex_dbg(adapter, INFO, |
1111 | "info: Scan: Creating full region channel list\n"); | |
658f37b7 AK |
1112 | chan_num = mwifiex_scan_create_channel_list(priv, user_scan_in, |
1113 | scan_chan_list, | |
1114 | *filtered_scan); | |
1115 | } | |
1116 | ||
5e6e3a92 BZ |
1117 | } |
1118 | ||
1119 | /* | |
1120 | * This function inspects the scan response buffer for pointers to | |
1121 | * expected TLVs. | |
1122 | * | |
1123 | * TLVs can be included at the end of the scan response BSS information. | |
1124 | * | |
1125 | * Data in the buffer is parsed pointers to TLVs that can potentially | |
1126 | * be passed back in the response. | |
1127 | */ | |
1128 | static void | |
1129 | mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter *adapter, | |
1130 | struct mwifiex_ie_types_data *tlv, | |
1131 | u32 tlv_buf_size, u32 req_tlv_type, | |
1132 | struct mwifiex_ie_types_data **tlv_data) | |
1133 | { | |
1134 | struct mwifiex_ie_types_data *current_tlv; | |
1135 | u32 tlv_buf_left; | |
1136 | u32 tlv_type; | |
1137 | u32 tlv_len; | |
1138 | ||
1139 | current_tlv = tlv; | |
1140 | tlv_buf_left = tlv_buf_size; | |
1141 | *tlv_data = NULL; | |
1142 | ||
acebe8c1 ZL |
1143 | mwifiex_dbg(adapter, INFO, |
1144 | "info: SCAN_RESP: tlv_buf_size = %d\n", | |
1145 | tlv_buf_size); | |
5e6e3a92 BZ |
1146 | |
1147 | while (tlv_buf_left >= sizeof(struct mwifiex_ie_types_header)) { | |
1148 | ||
1149 | tlv_type = le16_to_cpu(current_tlv->header.type); | |
1150 | tlv_len = le16_to_cpu(current_tlv->header.len); | |
1151 | ||
1152 | if (sizeof(tlv->header) + tlv_len > tlv_buf_left) { | |
acebe8c1 ZL |
1153 | mwifiex_dbg(adapter, ERROR, |
1154 | "SCAN_RESP: TLV buffer corrupt\n"); | |
5e6e3a92 BZ |
1155 | break; |
1156 | } | |
1157 | ||
1158 | if (req_tlv_type == tlv_type) { | |
1159 | switch (tlv_type) { | |
1160 | case TLV_TYPE_TSFTIMESTAMP: | |
acebe8c1 ZL |
1161 | mwifiex_dbg(adapter, INFO, |
1162 | "info: SCAN_RESP: TSF\t" | |
1163 | "timestamp TLV, len = %d\n", | |
1164 | tlv_len); | |
2c208890 | 1165 | *tlv_data = current_tlv; |
5e6e3a92 BZ |
1166 | break; |
1167 | case TLV_TYPE_CHANNELBANDLIST: | |
acebe8c1 ZL |
1168 | mwifiex_dbg(adapter, INFO, |
1169 | "info: SCAN_RESP: channel\t" | |
1170 | "band list TLV, len = %d\n", | |
1171 | tlv_len); | |
2c208890 | 1172 | *tlv_data = current_tlv; |
5e6e3a92 BZ |
1173 | break; |
1174 | default: | |
acebe8c1 ZL |
1175 | mwifiex_dbg(adapter, ERROR, |
1176 | "SCAN_RESP: unhandled TLV = %d\n", | |
1177 | tlv_type); | |
5e6e3a92 BZ |
1178 | /* Give up, this seems corrupted */ |
1179 | return; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | if (*tlv_data) | |
1184 | break; | |
1185 | ||
1186 | ||
1187 | tlv_buf_left -= (sizeof(tlv->header) + tlv_len); | |
1188 | current_tlv = | |
1189 | (struct mwifiex_ie_types_data *) (current_tlv->data + | |
1190 | tlv_len); | |
1191 | ||
1192 | } /* while */ | |
1193 | } | |
1194 | ||
1195 | /* | |
7c6fa2a8 AK |
1196 | * This function parses provided beacon buffer and updates |
1197 | * respective fields in bss descriptor structure. | |
5e6e3a92 | 1198 | */ |
9558a407 AK |
1199 | int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter, |
1200 | struct mwifiex_bssdescriptor *bss_entry) | |
5e6e3a92 BZ |
1201 | { |
1202 | int ret = 0; | |
1203 | u8 element_id; | |
1204 | struct ieee_types_fh_param_set *fh_param_set; | |
1205 | struct ieee_types_ds_param_set *ds_param_set; | |
1206 | struct ieee_types_cf_param_set *cf_param_set; | |
1207 | struct ieee_types_ibss_param_set *ibss_param_set; | |
5e6e3a92 BZ |
1208 | u8 *current_ptr; |
1209 | u8 *rate; | |
1210 | u8 element_len; | |
1211 | u16 total_ie_len; | |
1212 | u8 bytes_to_copy; | |
1213 | u8 rate_size; | |
5e6e3a92 | 1214 | u8 found_data_rate_ie; |
7c6fa2a8 | 1215 | u32 bytes_left; |
5e6e3a92 BZ |
1216 | struct ieee_types_vendor_specific *vendor_ie; |
1217 | const u8 wpa_oui[4] = { 0x00, 0x50, 0xf2, 0x01 }; | |
1218 | const u8 wmm_oui[4] = { 0x00, 0x50, 0xf2, 0x02 }; | |
1219 | ||
1220 | found_data_rate_ie = false; | |
1221 | rate_size = 0; | |
9558a407 AK |
1222 | current_ptr = bss_entry->beacon_buf; |
1223 | bytes_left = bss_entry->beacon_buf_size; | |
5e6e3a92 BZ |
1224 | |
1225 | /* Process variable IE */ | |
7c6fa2a8 | 1226 | while (bytes_left >= 2) { |
5e6e3a92 BZ |
1227 | element_id = *current_ptr; |
1228 | element_len = *(current_ptr + 1); | |
1229 | total_ie_len = element_len + sizeof(struct ieee_types_header); | |
1230 | ||
7c6fa2a8 | 1231 | if (bytes_left < total_ie_len) { |
acebe8c1 ZL |
1232 | mwifiex_dbg(adapter, ERROR, |
1233 | "err: InterpretIE: in processing\t" | |
1234 | "IE, bytes left < IE length\n"); | |
7c6fa2a8 | 1235 | return -1; |
5e6e3a92 BZ |
1236 | } |
1237 | switch (element_id) { | |
1238 | case WLAN_EID_SSID: | |
1239 | bss_entry->ssid.ssid_len = element_len; | |
1240 | memcpy(bss_entry->ssid.ssid, (current_ptr + 2), | |
1241 | element_len); | |
acebe8c1 ZL |
1242 | mwifiex_dbg(adapter, INFO, |
1243 | "info: InterpretIE: ssid: %-32s\n", | |
1244 | bss_entry->ssid.ssid); | |
5e6e3a92 BZ |
1245 | break; |
1246 | ||
1247 | case WLAN_EID_SUPP_RATES: | |
1248 | memcpy(bss_entry->data_rates, current_ptr + 2, | |
1249 | element_len); | |
1250 | memcpy(bss_entry->supported_rates, current_ptr + 2, | |
1251 | element_len); | |
1252 | rate_size = element_len; | |
1253 | found_data_rate_ie = true; | |
1254 | break; | |
1255 | ||
1256 | case WLAN_EID_FH_PARAMS: | |
1257 | fh_param_set = | |
1258 | (struct ieee_types_fh_param_set *) current_ptr; | |
1259 | memcpy(&bss_entry->phy_param_set.fh_param_set, | |
1260 | fh_param_set, | |
1261 | sizeof(struct ieee_types_fh_param_set)); | |
1262 | break; | |
1263 | ||
1264 | case WLAN_EID_DS_PARAMS: | |
1265 | ds_param_set = | |
1266 | (struct ieee_types_ds_param_set *) current_ptr; | |
1267 | ||
1268 | bss_entry->channel = ds_param_set->current_chan; | |
1269 | ||
1270 | memcpy(&bss_entry->phy_param_set.ds_param_set, | |
1271 | ds_param_set, | |
1272 | sizeof(struct ieee_types_ds_param_set)); | |
1273 | break; | |
1274 | ||
1275 | case WLAN_EID_CF_PARAMS: | |
1276 | cf_param_set = | |
1277 | (struct ieee_types_cf_param_set *) current_ptr; | |
1278 | memcpy(&bss_entry->ss_param_set.cf_param_set, | |
1279 | cf_param_set, | |
1280 | sizeof(struct ieee_types_cf_param_set)); | |
1281 | break; | |
1282 | ||
1283 | case WLAN_EID_IBSS_PARAMS: | |
1284 | ibss_param_set = | |
1285 | (struct ieee_types_ibss_param_set *) | |
1286 | current_ptr; | |
1287 | memcpy(&bss_entry->ss_param_set.ibss_param_set, | |
1288 | ibss_param_set, | |
1289 | sizeof(struct ieee_types_ibss_param_set)); | |
1290 | break; | |
1291 | ||
1292 | case WLAN_EID_ERP_INFO: | |
1293 | bss_entry->erp_flags = *(current_ptr + 2); | |
1294 | break; | |
1295 | ||
2a7305c8 AK |
1296 | case WLAN_EID_PWR_CONSTRAINT: |
1297 | bss_entry->local_constraint = *(current_ptr + 2); | |
1298 | bss_entry->sensed_11h = true; | |
1299 | break; | |
1300 | ||
1301 | case WLAN_EID_CHANNEL_SWITCH: | |
1302 | bss_entry->chan_sw_ie_present = true; | |
1303 | case WLAN_EID_PWR_CAPABILITY: | |
1304 | case WLAN_EID_TPC_REPORT: | |
1305 | case WLAN_EID_QUIET: | |
1306 | bss_entry->sensed_11h = true; | |
1307 | break; | |
1308 | ||
5e6e3a92 BZ |
1309 | case WLAN_EID_EXT_SUPP_RATES: |
1310 | /* | |
1311 | * Only process extended supported rate | |
1312 | * if data rate is already found. | |
1313 | * Data rate IE should come before | |
1314 | * extended supported rate IE | |
1315 | */ | |
1316 | if (found_data_rate_ie) { | |
1317 | if ((element_len + rate_size) > | |
1318 | MWIFIEX_SUPPORTED_RATES) | |
1319 | bytes_to_copy = | |
1320 | (MWIFIEX_SUPPORTED_RATES - | |
1321 | rate_size); | |
1322 | else | |
1323 | bytes_to_copy = element_len; | |
1324 | ||
1325 | rate = (u8 *) bss_entry->data_rates; | |
1326 | rate += rate_size; | |
1327 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1328 | ||
1329 | rate = (u8 *) bss_entry->supported_rates; | |
1330 | rate += rate_size; | |
1331 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1332 | } | |
1333 | break; | |
1334 | ||
1335 | case WLAN_EID_VENDOR_SPECIFIC: | |
1336 | vendor_ie = (struct ieee_types_vendor_specific *) | |
1337 | current_ptr; | |
1338 | ||
1339 | if (!memcmp | |
1340 | (vendor_ie->vend_hdr.oui, wpa_oui, | |
1341 | sizeof(wpa_oui))) { | |
1342 | bss_entry->bcn_wpa_ie = | |
1343 | (struct ieee_types_vendor_specific *) | |
1344 | current_ptr; | |
cff23cec YAP |
1345 | bss_entry->wpa_offset = (u16) |
1346 | (current_ptr - bss_entry->beacon_buf); | |
5e6e3a92 BZ |
1347 | } else if (!memcmp(vendor_ie->vend_hdr.oui, wmm_oui, |
1348 | sizeof(wmm_oui))) { | |
1349 | if (total_ie_len == | |
cff23cec YAP |
1350 | sizeof(struct ieee_types_wmm_parameter) || |
1351 | total_ie_len == | |
5e6e3a92 BZ |
1352 | sizeof(struct ieee_types_wmm_info)) |
1353 | /* | |
1354 | * Only accept and copy the WMM IE if | |
1355 | * it matches the size expected for the | |
1356 | * WMM Info IE or the WMM Parameter IE. | |
1357 | */ | |
1358 | memcpy((u8 *) &bss_entry->wmm_ie, | |
1359 | current_ptr, total_ie_len); | |
1360 | } | |
1361 | break; | |
1362 | case WLAN_EID_RSN: | |
1363 | bss_entry->bcn_rsn_ie = | |
1364 | (struct ieee_types_generic *) current_ptr; | |
1365 | bss_entry->rsn_offset = (u16) (current_ptr - | |
1366 | bss_entry->beacon_buf); | |
1367 | break; | |
1368 | case WLAN_EID_BSS_AC_ACCESS_DELAY: | |
1369 | bss_entry->bcn_wapi_ie = | |
1370 | (struct ieee_types_generic *) current_ptr; | |
1371 | bss_entry->wapi_offset = (u16) (current_ptr - | |
1372 | bss_entry->beacon_buf); | |
1373 | break; | |
1374 | case WLAN_EID_HT_CAPABILITY: | |
1375 | bss_entry->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
1376 | (current_ptr + | |
1377 | sizeof(struct ieee_types_header)); | |
1378 | bss_entry->ht_cap_offset = (u16) (current_ptr + | |
1379 | sizeof(struct ieee_types_header) - | |
1380 | bss_entry->beacon_buf); | |
1381 | break; | |
074d46d1 JB |
1382 | case WLAN_EID_HT_OPERATION: |
1383 | bss_entry->bcn_ht_oper = | |
1384 | (struct ieee80211_ht_operation *)(current_ptr + | |
5e6e3a92 BZ |
1385 | sizeof(struct ieee_types_header)); |
1386 | bss_entry->ht_info_offset = (u16) (current_ptr + | |
1387 | sizeof(struct ieee_types_header) - | |
1388 | bss_entry->beacon_buf); | |
1389 | break; | |
a5f39056 YAP |
1390 | case WLAN_EID_VHT_CAPABILITY: |
1391 | bss_entry->disable_11ac = false; | |
1392 | bss_entry->bcn_vht_cap = | |
1393 | (void *)(current_ptr + | |
1394 | sizeof(struct ieee_types_header)); | |
1395 | bss_entry->vht_cap_offset = | |
1396 | (u16)((u8 *)bss_entry->bcn_vht_cap - | |
1397 | bss_entry->beacon_buf); | |
1398 | break; | |
1399 | case WLAN_EID_VHT_OPERATION: | |
1400 | bss_entry->bcn_vht_oper = | |
1401 | (void *)(current_ptr + | |
1402 | sizeof(struct ieee_types_header)); | |
1403 | bss_entry->vht_info_offset = | |
1404 | (u16)((u8 *)bss_entry->bcn_vht_oper - | |
1405 | bss_entry->beacon_buf); | |
1406 | break; | |
5e6e3a92 | 1407 | case WLAN_EID_BSS_COEX_2040: |
cf831ffe AK |
1408 | bss_entry->bcn_bss_co_2040 = current_ptr; |
1409 | bss_entry->bss_co_2040_offset = | |
1410 | (u16) (current_ptr - bss_entry->beacon_buf); | |
5e6e3a92 BZ |
1411 | break; |
1412 | case WLAN_EID_EXT_CAPABILITY: | |
cf831ffe AK |
1413 | bss_entry->bcn_ext_cap = current_ptr; |
1414 | bss_entry->ext_cap_offset = | |
1415 | (u16) (current_ptr - bss_entry->beacon_buf); | |
5e6e3a92 | 1416 | break; |
a5f39056 | 1417 | case WLAN_EID_OPMODE_NOTIF: |
cf831ffe | 1418 | bss_entry->oper_mode = (void *)current_ptr; |
a5f39056 YAP |
1419 | bss_entry->oper_mode_offset = |
1420 | (u16)((u8 *)bss_entry->oper_mode - | |
1421 | bss_entry->beacon_buf); | |
1422 | break; | |
5e6e3a92 BZ |
1423 | default: |
1424 | break; | |
1425 | } | |
1426 | ||
1427 | current_ptr += element_len + 2; | |
1428 | ||
1429 | /* Need to account for IE ID and IE Len */ | |
7c6fa2a8 | 1430 | bytes_left -= (element_len + 2); |
5e6e3a92 | 1431 | |
7c6fa2a8 | 1432 | } /* while (bytes_left > 2) */ |
5e6e3a92 BZ |
1433 | return ret; |
1434 | } | |
1435 | ||
5e6e3a92 BZ |
1436 | /* |
1437 | * This function converts radio type scan parameter to a band configuration | |
1438 | * to be used in join command. | |
1439 | */ | |
1440 | static u8 | |
1441 | mwifiex_radio_type_to_band(u8 radio_type) | |
1442 | { | |
5e6e3a92 BZ |
1443 | switch (radio_type) { |
1444 | case HostCmd_SCAN_RADIO_TYPE_A: | |
636c4598 | 1445 | return BAND_A; |
5e6e3a92 BZ |
1446 | case HostCmd_SCAN_RADIO_TYPE_BG: |
1447 | default: | |
636c4598 | 1448 | return BAND_G; |
5e6e3a92 | 1449 | } |
5e6e3a92 BZ |
1450 | } |
1451 | ||
5e6e3a92 BZ |
1452 | /* |
1453 | * This is an internal function used to start a scan based on an input | |
1454 | * configuration. | |
1455 | * | |
1456 | * This uses the input user scan configuration information when provided in | |
1457 | * order to send the appropriate scan commands to firmware to populate or | |
1458 | * update the internal driver scan table. | |
1459 | */ | |
1a1fb970 AK |
1460 | int mwifiex_scan_networks(struct mwifiex_private *priv, |
1461 | const struct mwifiex_user_scan_cfg *user_scan_in) | |
5e6e3a92 | 1462 | { |
c2476335 | 1463 | int ret; |
5e6e3a92 | 1464 | struct mwifiex_adapter *adapter = priv->adapter; |
270e58e8 YAP |
1465 | struct cmd_ctrl_node *cmd_node; |
1466 | union mwifiex_scan_cmd_config_tlv *scan_cfg_out; | |
5e6e3a92 | 1467 | struct mwifiex_ie_types_chan_list_param_set *chan_list_out; |
5e6e3a92 | 1468 | struct mwifiex_chan_scan_param_set *scan_chan_list; |
5e6e3a92 BZ |
1469 | u8 filtered_scan; |
1470 | u8 scan_current_chan_only; | |
1471 | u8 max_chan_per_scan; | |
1472 | unsigned long flags; | |
1473 | ||
600f5d90 | 1474 | if (adapter->scan_processing) { |
acebe8c1 ZL |
1475 | mwifiex_dbg(adapter, WARN, |
1476 | "cmd: Scan already in process...\n"); | |
c2476335 | 1477 | return -EBUSY; |
5e6e3a92 BZ |
1478 | } |
1479 | ||
600f5d90 | 1480 | if (priv->scan_block) { |
acebe8c1 ZL |
1481 | mwifiex_dbg(adapter, WARN, |
1482 | "cmd: Scan is blocked during association...\n"); | |
c2476335 | 1483 | return -EBUSY; |
5e6e3a92 BZ |
1484 | } |
1485 | ||
e00483f7 | 1486 | if (adapter->surprise_removed || adapter->is_cmd_timedout) { |
acebe8c1 ZL |
1487 | mwifiex_dbg(adapter, ERROR, |
1488 | "Ignore scan. Card removed or firmware in bad state\n"); | |
e00483f7 AK |
1489 | return -EFAULT; |
1490 | } | |
1491 | ||
c2476335 BZ |
1492 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); |
1493 | adapter->scan_processing = true; | |
1494 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1495 | ||
5e6e3a92 | 1496 | scan_cfg_out = kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv), |
0d2e7a5c | 1497 | GFP_KERNEL); |
5e6e3a92 | 1498 | if (!scan_cfg_out) { |
061f2e69 AK |
1499 | ret = -ENOMEM; |
1500 | goto done; | |
5e6e3a92 BZ |
1501 | } |
1502 | ||
0d2e7a5c JP |
1503 | scan_chan_list = kcalloc(MWIFIEX_USER_SCAN_CHAN_MAX, |
1504 | sizeof(struct mwifiex_chan_scan_param_set), | |
1505 | GFP_KERNEL); | |
5e6e3a92 | 1506 | if (!scan_chan_list) { |
5e6e3a92 | 1507 | kfree(scan_cfg_out); |
061f2e69 AK |
1508 | ret = -ENOMEM; |
1509 | goto done; | |
5e6e3a92 BZ |
1510 | } |
1511 | ||
cff23cec YAP |
1512 | mwifiex_config_scan(priv, user_scan_in, &scan_cfg_out->config, |
1513 | &chan_list_out, scan_chan_list, &max_chan_per_scan, | |
1514 | &filtered_scan, &scan_current_chan_only); | |
5e6e3a92 | 1515 | |
600f5d90 AK |
1516 | ret = mwifiex_scan_channel_list(priv, max_chan_per_scan, filtered_scan, |
1517 | &scan_cfg_out->config, chan_list_out, | |
1518 | scan_chan_list); | |
5e6e3a92 BZ |
1519 | |
1520 | /* Get scan command from scan_pending_q and put to cmd_pending_q */ | |
1521 | if (!ret) { | |
1522 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1523 | if (!list_empty(&adapter->scan_pending_q)) { | |
1524 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
cff23cec | 1525 | struct cmd_ctrl_node, list); |
5e6e3a92 BZ |
1526 | list_del(&cmd_node->list); |
1527 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
cff23cec | 1528 | flags); |
5e6e3a92 BZ |
1529 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, |
1530 | true); | |
1a1fb970 | 1531 | queue_work(adapter->workqueue, &adapter->main_work); |
00d7ea11 AK |
1532 | |
1533 | /* Perform internal scan synchronously */ | |
21de979e | 1534 | if (!priv->scan_request) { |
acebe8c1 ZL |
1535 | mwifiex_dbg(adapter, INFO, |
1536 | "wait internal scan\n"); | |
00d7ea11 | 1537 | mwifiex_wait_queue_complete(adapter, cmd_node); |
21de979e | 1538 | } |
5e6e3a92 BZ |
1539 | } else { |
1540 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
1541 | flags); | |
1542 | } | |
5e6e3a92 BZ |
1543 | } |
1544 | ||
1545 | kfree(scan_cfg_out); | |
1546 | kfree(scan_chan_list); | |
061f2e69 AK |
1547 | done: |
1548 | if (ret) { | |
1549 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1550 | adapter->scan_processing = false; | |
1551 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1552 | } | |
5e6e3a92 BZ |
1553 | return ret; |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | * This function prepares a scan command to be sent to the firmware. | |
1558 | * | |
1559 | * This uses the scan command configuration sent to the command processing | |
1560 | * module in command preparation stage to configure a scan command structure | |
1561 | * to send to firmware. | |
1562 | * | |
1563 | * The fixed fields specifying the BSS type and BSSID filters as well as a | |
1564 | * variable number/length of TLVs are sent in the command to firmware. | |
1565 | * | |
1566 | * Preparation also includes - | |
1567 | * - Setting command ID, and proper size | |
1568 | * - Ensuring correct endian-ness | |
1569 | */ | |
a5ffddb7 AK |
1570 | int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command *cmd, |
1571 | struct mwifiex_scan_cmd_config *scan_cfg) | |
5e6e3a92 BZ |
1572 | { |
1573 | struct host_cmd_ds_802_11_scan *scan_cmd = &cmd->params.scan; | |
5e6e3a92 BZ |
1574 | |
1575 | /* Set fixed field variables in scan command */ | |
1576 | scan_cmd->bss_mode = scan_cfg->bss_mode; | |
1577 | memcpy(scan_cmd->bssid, scan_cfg->specific_bssid, | |
1578 | sizeof(scan_cmd->bssid)); | |
1579 | memcpy(scan_cmd->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len); | |
1580 | ||
1581 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN); | |
1582 | ||
1583 | /* Size is equal to the sizeof(fixed portions) + the TLV len + header */ | |
1584 | cmd->size = cpu_to_le16((u16) (sizeof(scan_cmd->bss_mode) | |
1585 | + sizeof(scan_cmd->bssid) | |
1586 | + scan_cfg->tlv_buf_len + S_DS_GEN)); | |
1587 | ||
1588 | return 0; | |
1589 | } | |
1590 | ||
7c6fa2a8 AK |
1591 | /* |
1592 | * This function checks compatibility of requested network with current | |
1593 | * driver settings. | |
1594 | */ | |
1595 | int mwifiex_check_network_compatibility(struct mwifiex_private *priv, | |
1596 | struct mwifiex_bssdescriptor *bss_desc) | |
1597 | { | |
1598 | int ret = -1; | |
1599 | ||
1600 | if (!bss_desc) | |
1601 | return -1; | |
1602 | ||
6685d109 YAP |
1603 | if ((mwifiex_get_cfp(priv, (u8) bss_desc->bss_band, |
1604 | (u16) bss_desc->channel, 0))) { | |
7c6fa2a8 AK |
1605 | switch (priv->bss_mode) { |
1606 | case NL80211_IFTYPE_STATION: | |
1607 | case NL80211_IFTYPE_ADHOC: | |
1608 | ret = mwifiex_is_network_compatible(priv, bss_desc, | |
1609 | priv->bss_mode); | |
1610 | if (ret) | |
acebe8c1 ZL |
1611 | mwifiex_dbg(priv->adapter, ERROR, |
1612 | "Incompatible network settings\n"); | |
2f9279b5 | 1613 | break; |
7c6fa2a8 | 1614 | default: |
2f9279b5 | 1615 | ret = 0; |
7c6fa2a8 AK |
1616 | } |
1617 | } | |
1618 | ||
1619 | return ret; | |
1620 | } | |
1621 | ||
2375fa2b | 1622 | /* This function checks if SSID string contains all zeroes or length is zero */ |
1623 | static bool mwifiex_is_hidden_ssid(struct cfg80211_ssid *ssid) | |
1624 | { | |
1625 | int idx; | |
1626 | ||
1627 | for (idx = 0; idx < ssid->ssid_len; idx++) { | |
1628 | if (ssid->ssid[idx]) | |
1629 | return false; | |
1630 | } | |
1631 | ||
1632 | return true; | |
1633 | } | |
1634 | ||
1635 | /* This function checks if any hidden SSID found in passive scan channels | |
1636 | * and save those channels for specific SSID active scan | |
1637 | */ | |
1638 | static int mwifiex_save_hidden_ssid_channels(struct mwifiex_private *priv, | |
1639 | struct cfg80211_bss *bss) | |
1640 | { | |
1641 | struct mwifiex_bssdescriptor *bss_desc; | |
1642 | int ret; | |
1643 | int chid; | |
1644 | ||
1645 | /* Allocate and fill new bss descriptor */ | |
1646 | bss_desc = kzalloc(sizeof(*bss_desc), GFP_KERNEL); | |
1647 | if (!bss_desc) | |
1648 | return -ENOMEM; | |
1649 | ||
1650 | ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc); | |
1651 | if (ret) | |
1652 | goto done; | |
1653 | ||
1654 | if (mwifiex_is_hidden_ssid(&bss_desc->ssid)) { | |
1655 | mwifiex_dbg(priv->adapter, INFO, "found hidden SSID\n"); | |
1656 | for (chid = 0 ; chid < MWIFIEX_USER_SCAN_CHAN_MAX; chid++) { | |
1657 | if (priv->hidden_chan[chid].chan_number == | |
1658 | bss->channel->hw_value) | |
1659 | break; | |
1660 | ||
1661 | if (!priv->hidden_chan[chid].chan_number) { | |
1662 | priv->hidden_chan[chid].chan_number = | |
1663 | bss->channel->hw_value; | |
1664 | priv->hidden_chan[chid].radio_type = | |
1665 | bss->channel->band; | |
1666 | priv->hidden_chan[chid].scan_type = | |
1667 | MWIFIEX_SCAN_TYPE_ACTIVE; | |
1668 | break; | |
1669 | } | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | done: | |
1674 | kfree(bss_desc); | |
1675 | return 0; | |
1676 | } | |
1677 | ||
9558a407 AK |
1678 | static int mwifiex_update_curr_bss_params(struct mwifiex_private *priv, |
1679 | struct cfg80211_bss *bss) | |
7c6fa2a8 | 1680 | { |
db652e4b | 1681 | struct mwifiex_bssdescriptor *bss_desc; |
7c6fa2a8 AK |
1682 | int ret; |
1683 | unsigned long flags; | |
7c6fa2a8 AK |
1684 | |
1685 | /* Allocate and fill new bss descriptor */ | |
0d2e7a5c JP |
1686 | bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor), GFP_KERNEL); |
1687 | if (!bss_desc) | |
7c6fa2a8 | 1688 | return -ENOMEM; |
5982b47a | 1689 | |
9558a407 | 1690 | ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc); |
7c6fa2a8 AK |
1691 | if (ret) |
1692 | goto done; | |
1693 | ||
1694 | ret = mwifiex_check_network_compatibility(priv, bss_desc); | |
1695 | if (ret) | |
1696 | goto done; | |
1697 | ||
7c6fa2a8 | 1698 | spin_lock_irqsave(&priv->curr_bcn_buf_lock, flags); |
7c6fa2a8 AK |
1699 | /* Make a copy of current BSSID descriptor */ |
1700 | memcpy(&priv->curr_bss_params.bss_descriptor, bss_desc, | |
cff23cec | 1701 | sizeof(priv->curr_bss_params.bss_descriptor)); |
d837a2ae BZ |
1702 | |
1703 | /* The contents of beacon_ie will be copied to its own buffer | |
1704 | * in mwifiex_save_curr_bcn() | |
1705 | */ | |
7c6fa2a8 AK |
1706 | mwifiex_save_curr_bcn(priv); |
1707 | spin_unlock_irqrestore(&priv->curr_bcn_buf_lock, flags); | |
1708 | ||
1709 | done: | |
d837a2ae BZ |
1710 | /* beacon_ie buffer was allocated in function |
1711 | * mwifiex_fill_new_bss_desc(). Free it now. | |
1712 | */ | |
1713 | kfree(bss_desc->beacon_buf); | |
7c6fa2a8 | 1714 | kfree(bss_desc); |
7c6fa2a8 AK |
1715 | return 0; |
1716 | } | |
1717 | ||
3b4d5c64 AK |
1718 | static int |
1719 | mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info, | |
1720 | u32 *bytes_left, u64 fw_tsf, u8 *radio_type, | |
21f58d20 | 1721 | bool ext_scan, s32 rssi_val) |
3b4d5c64 AK |
1722 | { |
1723 | struct mwifiex_adapter *adapter = priv->adapter; | |
1724 | struct mwifiex_chan_freq_power *cfp; | |
1725 | struct cfg80211_bss *bss; | |
1726 | u8 bssid[ETH_ALEN]; | |
1727 | s32 rssi; | |
1728 | const u8 *ie_buf; | |
1729 | size_t ie_len; | |
1730 | u16 channel = 0; | |
1731 | u16 beacon_size = 0; | |
1732 | u32 curr_bcn_bytes; | |
1733 | u32 freq; | |
1734 | u16 beacon_period; | |
1735 | u16 cap_info_bitmap; | |
1736 | u8 *current_ptr; | |
1737 | u64 timestamp; | |
1738 | struct mwifiex_fixed_bcn_param *bcn_param; | |
1739 | struct mwifiex_bss_priv *bss_priv; | |
1740 | ||
1741 | if (*bytes_left >= sizeof(beacon_size)) { | |
1742 | /* Extract & convert beacon size from command buffer */ | |
798ea8ee | 1743 | beacon_size = le16_to_cpu(*(__le16 *)(*bss_info)); |
3b4d5c64 AK |
1744 | *bytes_left -= sizeof(beacon_size); |
1745 | *bss_info += sizeof(beacon_size); | |
1746 | } | |
1747 | ||
1748 | if (!beacon_size || beacon_size > *bytes_left) { | |
1749 | *bss_info += *bytes_left; | |
1750 | *bytes_left = 0; | |
1751 | return -EFAULT; | |
1752 | } | |
1753 | ||
1754 | /* Initialize the current working beacon pointer for this BSS | |
1755 | * iteration | |
1756 | */ | |
1757 | current_ptr = *bss_info; | |
1758 | ||
1759 | /* Advance the return beacon pointer past the current beacon */ | |
1760 | *bss_info += beacon_size; | |
1761 | *bytes_left -= beacon_size; | |
1762 | ||
1763 | curr_bcn_bytes = beacon_size; | |
1764 | ||
1765 | /* First 5 fields are bssid, RSSI(for legacy scan only), | |
1766 | * time stamp, beacon interval, and capability information | |
1767 | */ | |
1768 | if (curr_bcn_bytes < ETH_ALEN + sizeof(u8) + | |
1769 | sizeof(struct mwifiex_fixed_bcn_param)) { | |
acebe8c1 ZL |
1770 | mwifiex_dbg(adapter, ERROR, |
1771 | "InterpretIE: not enough bytes left\n"); | |
3b4d5c64 AK |
1772 | return -EFAULT; |
1773 | } | |
1774 | ||
1775 | memcpy(bssid, current_ptr, ETH_ALEN); | |
1776 | current_ptr += ETH_ALEN; | |
1777 | curr_bcn_bytes -= ETH_ALEN; | |
1778 | ||
1779 | if (!ext_scan) { | |
45d18c56 | 1780 | rssi = (s32) *current_ptr; |
3b4d5c64 AK |
1781 | rssi = (-rssi) * 100; /* Convert dBm to mBm */ |
1782 | current_ptr += sizeof(u8); | |
1783 | curr_bcn_bytes -= sizeof(u8); | |
acebe8c1 ZL |
1784 | mwifiex_dbg(adapter, INFO, |
1785 | "info: InterpretIE: RSSI=%d\n", rssi); | |
21f58d20 AK |
1786 | } else { |
1787 | rssi = rssi_val; | |
3b4d5c64 AK |
1788 | } |
1789 | ||
1790 | bcn_param = (struct mwifiex_fixed_bcn_param *)current_ptr; | |
1791 | current_ptr += sizeof(*bcn_param); | |
1792 | curr_bcn_bytes -= sizeof(*bcn_param); | |
1793 | ||
1794 | timestamp = le64_to_cpu(bcn_param->timestamp); | |
1795 | beacon_period = le16_to_cpu(bcn_param->beacon_period); | |
1796 | ||
1797 | cap_info_bitmap = le16_to_cpu(bcn_param->cap_info_bitmap); | |
acebe8c1 ZL |
1798 | mwifiex_dbg(adapter, INFO, |
1799 | "info: InterpretIE: capabilities=0x%X\n", | |
1800 | cap_info_bitmap); | |
3b4d5c64 AK |
1801 | |
1802 | /* Rest of the current buffer are IE's */ | |
1803 | ie_buf = current_ptr; | |
1804 | ie_len = curr_bcn_bytes; | |
acebe8c1 ZL |
1805 | mwifiex_dbg(adapter, INFO, |
1806 | "info: InterpretIE: IELength for this AP = %d\n", | |
1807 | curr_bcn_bytes); | |
3b4d5c64 AK |
1808 | |
1809 | while (curr_bcn_bytes >= sizeof(struct ieee_types_header)) { | |
1810 | u8 element_id, element_len; | |
1811 | ||
1812 | element_id = *current_ptr; | |
1813 | element_len = *(current_ptr + 1); | |
1814 | if (curr_bcn_bytes < element_len + | |
1815 | sizeof(struct ieee_types_header)) { | |
acebe8c1 ZL |
1816 | mwifiex_dbg(adapter, ERROR, |
1817 | "%s: bytes left < IE length\n", __func__); | |
3b4d5c64 AK |
1818 | return -EFAULT; |
1819 | } | |
1820 | if (element_id == WLAN_EID_DS_PARAMS) { | |
1821 | channel = *(current_ptr + | |
1822 | sizeof(struct ieee_types_header)); | |
1823 | break; | |
1824 | } | |
1825 | ||
1826 | current_ptr += element_len + sizeof(struct ieee_types_header); | |
1827 | curr_bcn_bytes -= element_len + | |
1828 | sizeof(struct ieee_types_header); | |
1829 | } | |
1830 | ||
1831 | if (channel) { | |
1832 | struct ieee80211_channel *chan; | |
1833 | u8 band; | |
1834 | ||
1835 | /* Skip entry if on csa closed channel */ | |
1836 | if (channel == priv->csa_chan) { | |
acebe8c1 ZL |
1837 | mwifiex_dbg(adapter, WARN, |
1838 | "Dropping entry on csa closed channel\n"); | |
3b4d5c64 AK |
1839 | return 0; |
1840 | } | |
1841 | ||
1842 | band = BAND_G; | |
1843 | if (radio_type) | |
1844 | band = mwifiex_radio_type_to_band(*radio_type & | |
1845 | (BIT(0) | BIT(1))); | |
1846 | ||
1847 | cfp = mwifiex_get_cfp(priv, band, channel, 0); | |
1848 | ||
1849 | freq = cfp ? cfp->freq : 0; | |
1850 | ||
4facc34a | 1851 | chan = ieee80211_get_channel(priv->wdev.wiphy, freq); |
3b4d5c64 AK |
1852 | |
1853 | if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) { | |
4facc34a | 1854 | bss = cfg80211_inform_bss(priv->wdev.wiphy, |
5bc8c1f2 JB |
1855 | chan, CFG80211_BSS_FTYPE_UNKNOWN, |
1856 | bssid, timestamp, | |
3b4d5c64 AK |
1857 | cap_info_bitmap, beacon_period, |
1858 | ie_buf, ie_len, rssi, GFP_KERNEL); | |
02421dd3 XH |
1859 | if (bss) { |
1860 | bss_priv = (struct mwifiex_bss_priv *)bss->priv; | |
1861 | bss_priv->band = band; | |
1862 | bss_priv->fw_tsf = fw_tsf; | |
1863 | if (priv->media_connected && | |
1864 | !memcmp(bssid, priv->curr_bss_params. | |
1865 | bss_descriptor.mac_address, | |
1866 | ETH_ALEN)) | |
1867 | mwifiex_update_curr_bss_params(priv, | |
1868 | bss); | |
1869 | cfg80211_put_bss(priv->wdev.wiphy, bss); | |
1870 | } | |
2375fa2b | 1871 | |
1872 | if ((chan->flags & IEEE80211_CHAN_RADAR) || | |
1873 | (chan->flags & IEEE80211_CHAN_NO_IR)) { | |
1874 | mwifiex_dbg(adapter, INFO, | |
1875 | "radar or passive channel %d\n", | |
1876 | channel); | |
1877 | mwifiex_save_hidden_ssid_channels(priv, bss); | |
1878 | } | |
3b4d5c64 AK |
1879 | } |
1880 | } else { | |
acebe8c1 | 1881 | mwifiex_dbg(adapter, WARN, "missing BSS channel IE\n"); |
3b4d5c64 AK |
1882 | } |
1883 | ||
1884 | return 0; | |
1885 | } | |
1886 | ||
21445049 AP |
1887 | static void mwifiex_complete_scan(struct mwifiex_private *priv) |
1888 | { | |
1889 | struct mwifiex_adapter *adapter = priv->adapter; | |
1890 | ||
bf354433 | 1891 | adapter->survey_idx = 0; |
21445049 AP |
1892 | if (adapter->curr_cmd->wait_q_enabled) { |
1893 | adapter->cmd_wait_q.status = 0; | |
1894 | if (!priv->scan_request) { | |
acebe8c1 ZL |
1895 | mwifiex_dbg(adapter, INFO, |
1896 | "complete internal scan\n"); | |
21445049 AP |
1897 | mwifiex_complete_cmd(adapter, adapter->curr_cmd); |
1898 | } | |
1899 | } | |
1900 | } | |
1901 | ||
2375fa2b | 1902 | /* This function checks if any hidden SSID found in passive scan channels |
1903 | * and do specific SSID active scan for those channels | |
1904 | */ | |
1905 | static int | |
1906 | mwifiex_active_scan_req_for_passive_chan(struct mwifiex_private *priv) | |
1907 | { | |
1908 | int ret; | |
1909 | struct mwifiex_adapter *adapter = priv->adapter; | |
1910 | u8 id = 0; | |
1911 | struct mwifiex_user_scan_cfg *user_scan_cfg; | |
1912 | ||
16d25da9 AK |
1913 | if (adapter->active_scan_triggered || !priv->scan_request || |
1914 | priv->scan_aborting) { | |
2375fa2b | 1915 | adapter->active_scan_triggered = false; |
1916 | return 0; | |
1917 | } | |
1918 | ||
1919 | if (!priv->hidden_chan[0].chan_number) { | |
1920 | mwifiex_dbg(adapter, INFO, "No BSS with hidden SSID found on DFS channels\n"); | |
1921 | return 0; | |
1922 | } | |
1923 | user_scan_cfg = kzalloc(sizeof(*user_scan_cfg), GFP_KERNEL); | |
1924 | ||
1925 | if (!user_scan_cfg) | |
1926 | return -ENOMEM; | |
1927 | ||
1928 | memset(user_scan_cfg, 0, sizeof(*user_scan_cfg)); | |
1929 | ||
1930 | for (id = 0; id < MWIFIEX_USER_SCAN_CHAN_MAX; id++) { | |
1931 | if (!priv->hidden_chan[id].chan_number) | |
1932 | break; | |
1933 | memcpy(&user_scan_cfg->chan_list[id], | |
1934 | &priv->hidden_chan[id], | |
1935 | sizeof(struct mwifiex_user_scan_chan)); | |
1936 | } | |
1937 | ||
1938 | adapter->active_scan_triggered = true; | |
c2a8f0ff | 1939 | ether_addr_copy(user_scan_cfg->random_mac, priv->random_mac); |
2375fa2b | 1940 | user_scan_cfg->num_ssids = priv->scan_request->n_ssids; |
1941 | user_scan_cfg->ssid_list = priv->scan_request->ssids; | |
1942 | ||
1943 | ret = mwifiex_scan_networks(priv, user_scan_cfg); | |
1944 | kfree(user_scan_cfg); | |
1945 | ||
1946 | memset(&priv->hidden_chan, 0, sizeof(priv->hidden_chan)); | |
1947 | ||
1948 | if (ret) { | |
1949 | dev_err(priv->adapter->dev, "scan failed: %d\n", ret); | |
1950 | return ret; | |
1951 | } | |
1952 | ||
1953 | return 0; | |
1954 | } | |
d44b5c2f AK |
1955 | static void mwifiex_check_next_scan_command(struct mwifiex_private *priv) |
1956 | { | |
1957 | struct mwifiex_adapter *adapter = priv->adapter; | |
c70ca8cb | 1958 | struct cmd_ctrl_node *cmd_node; |
d44b5c2f AK |
1959 | unsigned long flags; |
1960 | ||
1961 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1962 | if (list_empty(&adapter->scan_pending_q)) { | |
1963 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
c70ca8cb | 1964 | |
d44b5c2f AK |
1965 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); |
1966 | adapter->scan_processing = false; | |
1967 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1968 | ||
2375fa2b | 1969 | mwifiex_active_scan_req_for_passive_chan(priv); |
1970 | ||
21445049 AP |
1971 | if (!adapter->ext_scan) |
1972 | mwifiex_complete_scan(priv); | |
1973 | ||
d44b5c2f | 1974 | if (priv->scan_request) { |
1d76250b AS |
1975 | struct cfg80211_scan_info info = { |
1976 | .aborted = false, | |
1977 | }; | |
1978 | ||
acebe8c1 ZL |
1979 | mwifiex_dbg(adapter, INFO, |
1980 | "info: notifying scan done\n"); | |
1d76250b | 1981 | cfg80211_scan_done(priv->scan_request, &info); |
d44b5c2f | 1982 | priv->scan_request = NULL; |
09e672a1 | 1983 | priv->scan_aborting = false; |
d44b5c2f AK |
1984 | } else { |
1985 | priv->scan_aborting = false; | |
acebe8c1 ZL |
1986 | mwifiex_dbg(adapter, INFO, |
1987 | "info: scan already aborted\n"); | |
d44b5c2f | 1988 | } |
d8d91253 AK |
1989 | } else if ((priv->scan_aborting && !priv->scan_request) || |
1990 | priv->scan_block) { | |
d8d91253 AK |
1991 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); |
1992 | ||
c70ca8cb AF |
1993 | mwifiex_cancel_pending_scan_cmd(adapter); |
1994 | ||
d8d91253 AK |
1995 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); |
1996 | adapter->scan_processing = false; | |
1997 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1998 | ||
2375fa2b | 1999 | if (!adapter->active_scan_triggered) { |
2000 | if (priv->scan_request) { | |
1d76250b AS |
2001 | struct cfg80211_scan_info info = { |
2002 | .aborted = true, | |
2003 | }; | |
2004 | ||
2375fa2b | 2005 | mwifiex_dbg(adapter, INFO, |
2006 | "info: aborting scan\n"); | |
1d76250b | 2007 | cfg80211_scan_done(priv->scan_request, &info); |
2375fa2b | 2008 | priv->scan_request = NULL; |
09e672a1 | 2009 | priv->scan_aborting = false; |
2375fa2b | 2010 | } else { |
2011 | priv->scan_aborting = false; | |
2012 | mwifiex_dbg(adapter, INFO, | |
2013 | "info: scan already aborted\n"); | |
2014 | } | |
d44b5c2f | 2015 | } |
d8d91253 AK |
2016 | } else { |
2017 | /* Get scan command from scan_pending_q and put to | |
2018 | * cmd_pending_q | |
2019 | */ | |
2020 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
2021 | struct cmd_ctrl_node, list); | |
2022 | list_del(&cmd_node->list); | |
2023 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
2024 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true); | |
d44b5c2f AK |
2025 | } |
2026 | ||
2027 | return; | |
2028 | } | |
2029 | ||
a9c790ba XH |
2030 | void mwifiex_cancel_scan(struct mwifiex_adapter *adapter) |
2031 | { | |
2032 | struct mwifiex_private *priv; | |
2033 | unsigned long cmd_flags; | |
2034 | int i; | |
2035 | ||
2036 | mwifiex_cancel_pending_scan_cmd(adapter); | |
2037 | ||
2038 | if (adapter->scan_processing) { | |
2039 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, cmd_flags); | |
2040 | adapter->scan_processing = false; | |
2041 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, cmd_flags); | |
2042 | for (i = 0; i < adapter->priv_num; i++) { | |
2043 | priv = adapter->priv[i]; | |
2044 | if (!priv) | |
2045 | continue; | |
2046 | if (priv->scan_request) { | |
88b3ec52 DM |
2047 | struct cfg80211_scan_info info = { |
2048 | .aborted = true, | |
2049 | }; | |
2050 | ||
a9c790ba XH |
2051 | mwifiex_dbg(adapter, INFO, |
2052 | "info: aborting scan\n"); | |
88b3ec52 | 2053 | cfg80211_scan_done(priv->scan_request, &info); |
a9c790ba | 2054 | priv->scan_request = NULL; |
09e672a1 | 2055 | priv->scan_aborting = false; |
a9c790ba XH |
2056 | } |
2057 | } | |
2058 | } | |
2059 | } | |
2060 | ||
5e6e3a92 BZ |
2061 | /* |
2062 | * This function handles the command response of scan. | |
2063 | * | |
2064 | * The response buffer for the scan command has the following | |
2065 | * memory layout: | |
2066 | * | |
2067 | * .-------------------------------------------------------------. | |
2068 | * | Header (4 * sizeof(t_u16)): Standard command response hdr | | |
2069 | * .-------------------------------------------------------------. | |
2070 | * | BufSize (t_u16) : sizeof the BSS Description data | | |
2071 | * .-------------------------------------------------------------. | |
2072 | * | NumOfSet (t_u8) : Number of BSS Descs returned | | |
2073 | * .-------------------------------------------------------------. | |
2074 | * | BSSDescription data (variable, size given in BufSize) | | |
2075 | * .-------------------------------------------------------------. | |
2076 | * | TLV data (variable, size calculated using Header->Size, | | |
2077 | * | BufSize and sizeof the fixed fields above) | | |
2078 | * .-------------------------------------------------------------. | |
2079 | */ | |
2080 | int mwifiex_ret_802_11_scan(struct mwifiex_private *priv, | |
600f5d90 | 2081 | struct host_cmd_ds_command *resp) |
5e6e3a92 BZ |
2082 | { |
2083 | int ret = 0; | |
2084 | struct mwifiex_adapter *adapter = priv->adapter; | |
270e58e8 | 2085 | struct host_cmd_ds_802_11_scan_rsp *scan_rsp; |
5e6e3a92 BZ |
2086 | struct mwifiex_ie_types_data *tlv_data; |
2087 | struct mwifiex_ie_types_tsf_timestamp *tsf_tlv; | |
2088 | u8 *bss_info; | |
2089 | u32 scan_resp_size; | |
2090 | u32 bytes_left; | |
5e6e3a92 BZ |
2091 | u32 idx; |
2092 | u32 tlv_buf_size; | |
5e6e3a92 BZ |
2093 | struct mwifiex_ie_types_chan_band_list_param_set *chan_band_tlv; |
2094 | struct chan_band_param_set *chan_band; | |
5e6e3a92 | 2095 | u8 is_bgscan_resp; |
3b4d5c64 AK |
2096 | __le64 fw_tsf = 0; |
2097 | u8 *radio_type; | |
7d7f07d8 | 2098 | struct cfg80211_wowlan_nd_match *pmatch; |
2099 | struct cfg80211_sched_scan_request *nd_config = NULL; | |
5e6e3a92 BZ |
2100 | |
2101 | is_bgscan_resp = (le16_to_cpu(resp->command) | |
cff23cec | 2102 | == HostCmd_CMD_802_11_BG_SCAN_QUERY); |
5e6e3a92 BZ |
2103 | if (is_bgscan_resp) |
2104 | scan_rsp = &resp->params.bg_scan_query_resp.scan_resp; | |
2105 | else | |
2106 | scan_rsp = &resp->params.scan_resp; | |
2107 | ||
2108 | ||
67a50035 | 2109 | if (scan_rsp->number_of_sets > MWIFIEX_MAX_AP) { |
acebe8c1 ZL |
2110 | mwifiex_dbg(adapter, ERROR, |
2111 | "SCAN_RESP: too many AP returned (%d)\n", | |
2112 | scan_rsp->number_of_sets); | |
5e6e3a92 | 2113 | ret = -1; |
8a7d7cbf | 2114 | goto check_next_scan; |
5e6e3a92 BZ |
2115 | } |
2116 | ||
b887664d AK |
2117 | /* Check csa channel expiry before parsing scan response */ |
2118 | mwifiex_11h_get_csa_closed_channel(priv); | |
2119 | ||
5e6e3a92 | 2120 | bytes_left = le16_to_cpu(scan_rsp->bss_descript_size); |
acebe8c1 ZL |
2121 | mwifiex_dbg(adapter, INFO, |
2122 | "info: SCAN_RESP: bss_descript_size %d\n", | |
2123 | bytes_left); | |
5e6e3a92 BZ |
2124 | |
2125 | scan_resp_size = le16_to_cpu(resp->size); | |
2126 | ||
acebe8c1 ZL |
2127 | mwifiex_dbg(adapter, INFO, |
2128 | "info: SCAN_RESP: returned %d APs before parsing\n", | |
2129 | scan_rsp->number_of_sets); | |
5e6e3a92 | 2130 | |
5e6e3a92 BZ |
2131 | bss_info = scan_rsp->bss_desc_and_tlv_buffer; |
2132 | ||
2133 | /* | |
2134 | * The size of the TLV buffer is equal to the entire command response | |
2135 | * size (scan_resp_size) minus the fixed fields (sizeof()'s), the | |
2136 | * BSS Descriptions (bss_descript_size as bytesLef) and the command | |
2137 | * response header (S_DS_GEN) | |
2138 | */ | |
2139 | tlv_buf_size = scan_resp_size - (bytes_left | |
2140 | + sizeof(scan_rsp->bss_descript_size) | |
2141 | + sizeof(scan_rsp->number_of_sets) | |
2142 | + S_DS_GEN); | |
2143 | ||
2144 | tlv_data = (struct mwifiex_ie_types_data *) (scan_rsp-> | |
2145 | bss_desc_and_tlv_buffer + | |
2146 | bytes_left); | |
2147 | ||
2148 | /* Search the TLV buffer space in the scan response for any valid | |
2149 | TLVs */ | |
2150 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
2151 | TLV_TYPE_TSFTIMESTAMP, | |
2152 | (struct mwifiex_ie_types_data **) | |
2153 | &tsf_tlv); | |
2154 | ||
2155 | /* Search the TLV buffer space in the scan response for any valid | |
2156 | TLVs */ | |
2157 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
2158 | TLV_TYPE_CHANNELBANDLIST, | |
2159 | (struct mwifiex_ie_types_data **) | |
2160 | &chan_band_tlv); | |
2161 | ||
7d7f07d8 | 2162 | #ifdef CONFIG_PM |
2163 | if (priv->wdev.wiphy->wowlan_config) | |
2164 | nd_config = priv->wdev.wiphy->wowlan_config->nd_config; | |
2165 | #endif | |
2166 | ||
2167 | if (nd_config) { | |
2168 | adapter->nd_info = | |
2169 | kzalloc(sizeof(struct cfg80211_wowlan_nd_match) + | |
2170 | sizeof(struct cfg80211_wowlan_nd_match *) * | |
2171 | scan_rsp->number_of_sets, GFP_ATOMIC); | |
2172 | ||
2173 | if (adapter->nd_info) | |
2174 | adapter->nd_info->n_matches = scan_rsp->number_of_sets; | |
2175 | } | |
2176 | ||
5e6e3a92 | 2177 | for (idx = 0; idx < scan_rsp->number_of_sets && bytes_left; idx++) { |
5e6e3a92 BZ |
2178 | /* |
2179 | * If the TSF TLV was appended to the scan results, save this | |
b5abcf02 AK |
2180 | * entry's TSF value in the fw_tsf field. It is the firmware's |
2181 | * TSF value at the time the beacon or probe response was | |
2182 | * received. | |
5e6e3a92 | 2183 | */ |
7c6fa2a8 | 2184 | if (tsf_tlv) |
b5abcf02 AK |
2185 | memcpy(&fw_tsf, &tsf_tlv->tsf_data[idx * TSF_DATA_SIZE], |
2186 | sizeof(fw_tsf)); | |
7c6fa2a8 | 2187 | |
3b4d5c64 AK |
2188 | if (chan_band_tlv) { |
2189 | chan_band = &chan_band_tlv->chan_band_param[idx]; | |
2190 | radio_type = &chan_band->radio_type; | |
7c6fa2a8 | 2191 | } else { |
3b4d5c64 | 2192 | radio_type = NULL; |
7c6fa2a8 | 2193 | } |
3b4d5c64 | 2194 | |
7d7f07d8 | 2195 | if (chan_band_tlv && adapter->nd_info) { |
2196 | adapter->nd_info->matches[idx] = | |
b7116576 CJ |
2197 | kzalloc(sizeof(*pmatch) + sizeof(u32), |
2198 | GFP_ATOMIC); | |
7d7f07d8 | 2199 | |
2200 | pmatch = adapter->nd_info->matches[idx]; | |
2201 | ||
efdf0e39 | 2202 | if (pmatch) { |
b7116576 CJ |
2203 | pmatch->n_channels = 1; |
2204 | pmatch->channels[0] = chan_band->chan_number; | |
7d7f07d8 | 2205 | } |
2206 | } | |
2207 | ||
3b4d5c64 AK |
2208 | ret = mwifiex_parse_single_response_buf(priv, &bss_info, |
2209 | &bytes_left, | |
2210 | le64_to_cpu(fw_tsf), | |
21f58d20 | 2211 | radio_type, false, 0); |
3b4d5c64 AK |
2212 | if (ret) |
2213 | goto check_next_scan; | |
7c6fa2a8 | 2214 | } |
5e6e3a92 | 2215 | |
8a7d7cbf | 2216 | check_next_scan: |
d44b5c2f | 2217 | mwifiex_check_next_scan_command(priv); |
5e6e3a92 BZ |
2218 | return ret; |
2219 | } | |
2220 | ||
21f58d20 AK |
2221 | /* |
2222 | * This function prepares an extended scan command to be sent to the firmware | |
2223 | * | |
2224 | * This uses the scan command configuration sent to the command processing | |
2225 | * module in command preparation stage to configure a extended scan command | |
2226 | * structure to send to firmware. | |
2227 | */ | |
2228 | int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private *priv, | |
2229 | struct host_cmd_ds_command *cmd, | |
2230 | void *data_buf) | |
2231 | { | |
2232 | struct host_cmd_ds_802_11_scan_ext *ext_scan = &cmd->params.ext_scan; | |
2233 | struct mwifiex_scan_cmd_config *scan_cfg = data_buf; | |
2234 | ||
2235 | memcpy(ext_scan->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len); | |
2236 | ||
2237 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN_EXT); | |
2238 | ||
2239 | /* Size is equal to the sizeof(fixed portions) + the TLV len + header */ | |
2240 | cmd->size = cpu_to_le16((u16)(sizeof(ext_scan->reserved) | |
2241 | + scan_cfg->tlv_buf_len + S_DS_GEN)); | |
2242 | ||
2243 | return 0; | |
2244 | } | |
2245 | ||
0c9b7f22 XH |
2246 | /* This function prepares an background scan config command to be sent |
2247 | * to the firmware | |
2248 | */ | |
2249 | int mwifiex_cmd_802_11_bg_scan_config(struct mwifiex_private *priv, | |
2250 | struct host_cmd_ds_command *cmd, | |
2251 | void *data_buf) | |
2252 | { | |
2253 | struct host_cmd_ds_802_11_bg_scan_config *bgscan_config = | |
2254 | &cmd->params.bg_scan_config; | |
2255 | struct mwifiex_bg_scan_cfg *bgscan_cfg_in = data_buf; | |
2256 | u8 *tlv_pos = bgscan_config->tlv; | |
2257 | u8 num_probes; | |
2258 | u32 ssid_len, chan_idx, scan_type, scan_dur, chan_num; | |
2259 | int i; | |
2260 | struct mwifiex_ie_types_num_probes *num_probes_tlv; | |
2261 | struct mwifiex_ie_types_repeat_count *repeat_count_tlv; | |
fdcab083 | 2262 | struct mwifiex_ie_types_min_rssi_threshold *rssi_threshold_tlv; |
0c9b7f22 XH |
2263 | struct mwifiex_ie_types_bgscan_start_later *start_later_tlv; |
2264 | struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv; | |
2265 | struct mwifiex_ie_types_chan_list_param_set *chan_list_tlv; | |
2266 | struct mwifiex_chan_scan_param_set *temp_chan; | |
2267 | ||
2268 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_CONFIG); | |
2269 | cmd->size = cpu_to_le16(sizeof(*bgscan_config) + S_DS_GEN); | |
2270 | ||
2271 | bgscan_config->action = cpu_to_le16(bgscan_cfg_in->action); | |
2272 | bgscan_config->enable = bgscan_cfg_in->enable; | |
2273 | bgscan_config->bss_type = bgscan_cfg_in->bss_type; | |
2274 | bgscan_config->scan_interval = | |
2275 | cpu_to_le32(bgscan_cfg_in->scan_interval); | |
2276 | bgscan_config->report_condition = | |
2277 | cpu_to_le32(bgscan_cfg_in->report_condition); | |
2278 | ||
2279 | /* stop sched scan */ | |
2280 | if (!bgscan_config->enable) | |
2281 | return 0; | |
2282 | ||
2283 | bgscan_config->chan_per_scan = bgscan_cfg_in->chan_per_scan; | |
2284 | ||
2285 | num_probes = (bgscan_cfg_in->num_probes ? bgscan_cfg_in-> | |
2286 | num_probes : priv->adapter->scan_probes); | |
2287 | ||
2288 | if (num_probes) { | |
2289 | num_probes_tlv = (struct mwifiex_ie_types_num_probes *)tlv_pos; | |
2290 | num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); | |
2291 | num_probes_tlv->header.len = | |
2292 | cpu_to_le16(sizeof(num_probes_tlv->num_probes)); | |
2293 | num_probes_tlv->num_probes = cpu_to_le16((u16)num_probes); | |
2294 | ||
2295 | tlv_pos += sizeof(num_probes_tlv->header) + | |
2296 | le16_to_cpu(num_probes_tlv->header.len); | |
2297 | } | |
2298 | ||
2299 | if (bgscan_cfg_in->repeat_count) { | |
2300 | repeat_count_tlv = | |
2301 | (struct mwifiex_ie_types_repeat_count *)tlv_pos; | |
2302 | repeat_count_tlv->header.type = | |
2303 | cpu_to_le16(TLV_TYPE_REPEAT_COUNT); | |
2304 | repeat_count_tlv->header.len = | |
2305 | cpu_to_le16(sizeof(repeat_count_tlv->repeat_count)); | |
2306 | repeat_count_tlv->repeat_count = | |
2307 | cpu_to_le16(bgscan_cfg_in->repeat_count); | |
2308 | ||
2309 | tlv_pos += sizeof(repeat_count_tlv->header) + | |
2310 | le16_to_cpu(repeat_count_tlv->header.len); | |
2311 | } | |
2312 | ||
fdcab083 GB |
2313 | if (bgscan_cfg_in->rssi_threshold) { |
2314 | rssi_threshold_tlv = | |
2315 | (struct mwifiex_ie_types_min_rssi_threshold *)tlv_pos; | |
2316 | rssi_threshold_tlv->header.type = | |
2317 | cpu_to_le16(TLV_TYPE_RSSI_LOW); | |
2318 | rssi_threshold_tlv->header.len = | |
2319 | cpu_to_le16(sizeof(rssi_threshold_tlv->rssi_threshold)); | |
2320 | rssi_threshold_tlv->rssi_threshold = | |
2321 | cpu_to_le16(bgscan_cfg_in->rssi_threshold); | |
2322 | ||
2323 | tlv_pos += sizeof(rssi_threshold_tlv->header) + | |
2324 | le16_to_cpu(rssi_threshold_tlv->header.len); | |
2325 | } | |
2326 | ||
0c9b7f22 XH |
2327 | for (i = 0; i < bgscan_cfg_in->num_ssids; i++) { |
2328 | ssid_len = bgscan_cfg_in->ssid_list[i].ssid.ssid_len; | |
2329 | ||
2330 | wildcard_ssid_tlv = | |
2331 | (struct mwifiex_ie_types_wildcard_ssid_params *)tlv_pos; | |
2332 | wildcard_ssid_tlv->header.type = | |
2333 | cpu_to_le16(TLV_TYPE_WILDCARDSSID); | |
2334 | wildcard_ssid_tlv->header.len = cpu_to_le16( | |
2335 | (u16)(ssid_len + sizeof(wildcard_ssid_tlv-> | |
2336 | max_ssid_length))); | |
2337 | ||
2338 | /* max_ssid_length = 0 tells firmware to perform | |
2339 | * specific scan for the SSID filled, whereas | |
2340 | * max_ssid_length = IEEE80211_MAX_SSID_LEN is for | |
2341 | * wildcard scan. | |
2342 | */ | |
2343 | if (ssid_len) | |
2344 | wildcard_ssid_tlv->max_ssid_length = 0; | |
2345 | else | |
2346 | wildcard_ssid_tlv->max_ssid_length = | |
2347 | IEEE80211_MAX_SSID_LEN; | |
2348 | ||
2349 | memcpy(wildcard_ssid_tlv->ssid, | |
2350 | bgscan_cfg_in->ssid_list[i].ssid.ssid, ssid_len); | |
2351 | ||
2352 | tlv_pos += (sizeof(wildcard_ssid_tlv->header) | |
2353 | + le16_to_cpu(wildcard_ssid_tlv->header.len)); | |
2354 | } | |
2355 | ||
2356 | chan_list_tlv = (struct mwifiex_ie_types_chan_list_param_set *)tlv_pos; | |
2357 | ||
2358 | if (bgscan_cfg_in->chan_list[0].chan_number) { | |
2359 | dev_dbg(priv->adapter->dev, "info: bgscan: Using supplied channel list\n"); | |
2360 | ||
2361 | chan_list_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); | |
2362 | ||
2363 | for (chan_idx = 0; | |
2364 | chan_idx < MWIFIEX_BG_SCAN_CHAN_MAX && | |
2365 | bgscan_cfg_in->chan_list[chan_idx].chan_number; | |
2366 | chan_idx++) { | |
2367 | temp_chan = chan_list_tlv->chan_scan_param + chan_idx; | |
2368 | ||
2369 | /* Increment the TLV header length by size appended */ | |
2370 | le16_add_cpu(&chan_list_tlv->header.len, | |
2371 | sizeof(chan_list_tlv->chan_scan_param)); | |
2372 | ||
2373 | temp_chan->chan_number = | |
2374 | bgscan_cfg_in->chan_list[chan_idx].chan_number; | |
2375 | temp_chan->radio_type = | |
2376 | bgscan_cfg_in->chan_list[chan_idx].radio_type; | |
2377 | ||
2378 | scan_type = | |
2379 | bgscan_cfg_in->chan_list[chan_idx].scan_type; | |
2380 | ||
2381 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
2382 | temp_chan->chan_scan_mode_bitmap | |
2383 | |= MWIFIEX_PASSIVE_SCAN; | |
2384 | else | |
2385 | temp_chan->chan_scan_mode_bitmap | |
2386 | &= ~MWIFIEX_PASSIVE_SCAN; | |
2387 | ||
2388 | if (bgscan_cfg_in->chan_list[chan_idx].scan_time) { | |
2389 | scan_dur = (u16)bgscan_cfg_in-> | |
2390 | chan_list[chan_idx].scan_time; | |
2391 | } else { | |
2392 | scan_dur = (scan_type == | |
2393 | MWIFIEX_SCAN_TYPE_PASSIVE) ? | |
2394 | priv->adapter->passive_scan_time : | |
2395 | priv->adapter->specific_scan_time; | |
2396 | } | |
2397 | ||
2398 | temp_chan->min_scan_time = cpu_to_le16(scan_dur); | |
2399 | temp_chan->max_scan_time = cpu_to_le16(scan_dur); | |
2400 | } | |
2401 | } else { | |
2402 | dev_dbg(priv->adapter->dev, | |
2403 | "info: bgscan: Creating full region channel list\n"); | |
2404 | chan_num = | |
2405 | mwifiex_bgscan_create_channel_list(priv, bgscan_cfg_in, | |
2406 | chan_list_tlv-> | |
2407 | chan_scan_param); | |
2408 | le16_add_cpu(&chan_list_tlv->header.len, | |
2409 | chan_num * | |
2410 | sizeof(chan_list_tlv->chan_scan_param[0])); | |
2411 | } | |
2412 | ||
2413 | tlv_pos += (sizeof(chan_list_tlv->header) | |
2414 | + le16_to_cpu(chan_list_tlv->header.len)); | |
2415 | ||
2416 | if (bgscan_cfg_in->start_later) { | |
2417 | start_later_tlv = | |
2418 | (struct mwifiex_ie_types_bgscan_start_later *)tlv_pos; | |
2419 | start_later_tlv->header.type = | |
2420 | cpu_to_le16(TLV_TYPE_BGSCAN_START_LATER); | |
2421 | start_later_tlv->header.len = | |
2422 | cpu_to_le16(sizeof(start_later_tlv->start_later)); | |
2423 | start_later_tlv->start_later = | |
2424 | cpu_to_le16(bgscan_cfg_in->start_later); | |
2425 | ||
2426 | tlv_pos += sizeof(start_later_tlv->header) + | |
2427 | le16_to_cpu(start_later_tlv->header.len); | |
2428 | } | |
2429 | ||
2430 | /* Append vendor specific IE TLV */ | |
2431 | mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_BGSCAN, &tlv_pos); | |
2432 | ||
2433 | le16_add_cpu(&cmd->size, tlv_pos - bgscan_config->tlv); | |
2434 | ||
2435 | return 0; | |
2436 | } | |
2437 | ||
2438 | int mwifiex_stop_bg_scan(struct mwifiex_private *priv) | |
2439 | { | |
2440 | struct mwifiex_bg_scan_cfg *bgscan_cfg; | |
2441 | ||
2442 | if (!priv->sched_scanning) { | |
2443 | dev_dbg(priv->adapter->dev, "bgscan already stopped!\n"); | |
2444 | return 0; | |
2445 | } | |
2446 | ||
2447 | bgscan_cfg = kzalloc(sizeof(*bgscan_cfg), GFP_KERNEL); | |
2448 | if (!bgscan_cfg) | |
2449 | return -ENOMEM; | |
2450 | ||
2451 | bgscan_cfg->bss_type = MWIFIEX_BSS_MODE_INFRA; | |
2452 | bgscan_cfg->action = MWIFIEX_BGSCAN_ACT_SET; | |
2453 | bgscan_cfg->enable = false; | |
2454 | ||
2455 | if (mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_CONFIG, | |
2456 | HostCmd_ACT_GEN_SET, 0, bgscan_cfg, true)) { | |
2457 | kfree(bgscan_cfg); | |
2458 | return -EFAULT; | |
2459 | } | |
2460 | ||
2461 | kfree(bgscan_cfg); | |
2462 | priv->sched_scanning = false; | |
2463 | ||
2464 | return 0; | |
2465 | } | |
2466 | ||
bf354433 AP |
2467 | static void |
2468 | mwifiex_update_chan_statistics(struct mwifiex_private *priv, | |
2469 | struct mwifiex_ietypes_chanstats *tlv_stat) | |
2470 | { | |
2471 | struct mwifiex_adapter *adapter = priv->adapter; | |
2472 | u8 i, num_chan; | |
2473 | struct mwifiex_fw_chan_stats *fw_chan_stats; | |
2474 | struct mwifiex_chan_stats chan_stats; | |
2475 | ||
2476 | fw_chan_stats = (void *)((u8 *)tlv_stat + | |
2477 | sizeof(struct mwifiex_ie_types_header)); | |
2478 | num_chan = le16_to_cpu(tlv_stat->header.len) / | |
2479 | sizeof(struct mwifiex_chan_stats); | |
2480 | ||
2481 | for (i = 0 ; i < num_chan; i++) { | |
2482 | chan_stats.chan_num = fw_chan_stats->chan_num; | |
2483 | chan_stats.bandcfg = fw_chan_stats->bandcfg; | |
2484 | chan_stats.flags = fw_chan_stats->flags; | |
2485 | chan_stats.noise = fw_chan_stats->noise; | |
2486 | chan_stats.total_bss = le16_to_cpu(fw_chan_stats->total_bss); | |
2487 | chan_stats.cca_scan_dur = | |
2488 | le16_to_cpu(fw_chan_stats->cca_scan_dur); | |
2489 | chan_stats.cca_busy_dur = | |
2490 | le16_to_cpu(fw_chan_stats->cca_busy_dur); | |
acebe8c1 ZL |
2491 | mwifiex_dbg(adapter, INFO, |
2492 | "chan=%d, noise=%d, total_network=%d scan_duration=%d, busy_duration=%d\n", | |
2493 | chan_stats.chan_num, | |
2494 | chan_stats.noise, | |
2495 | chan_stats.total_bss, | |
2496 | chan_stats.cca_scan_dur, | |
2497 | chan_stats.cca_busy_dur); | |
bf354433 AP |
2498 | memcpy(&adapter->chan_stats[adapter->survey_idx++], &chan_stats, |
2499 | sizeof(struct mwifiex_chan_stats)); | |
2500 | fw_chan_stats++; | |
2501 | } | |
2502 | } | |
2503 | ||
21f58d20 | 2504 | /* This function handles the command response of extended scan */ |
bf354433 AP |
2505 | int mwifiex_ret_802_11_scan_ext(struct mwifiex_private *priv, |
2506 | struct host_cmd_ds_command *resp) | |
21f58d20 | 2507 | { |
3223db20 | 2508 | struct mwifiex_adapter *adapter = priv->adapter; |
bf354433 AP |
2509 | struct host_cmd_ds_802_11_scan_ext *ext_scan_resp; |
2510 | struct mwifiex_ie_types_header *tlv; | |
2511 | struct mwifiex_ietypes_chanstats *tlv_stat; | |
2512 | u16 buf_left, type, len; | |
2513 | ||
3223db20 AP |
2514 | struct host_cmd_ds_command *cmd_ptr; |
2515 | struct cmd_ctrl_node *cmd_node; | |
2516 | unsigned long cmd_flags, scan_flags; | |
2517 | bool complete_scan = false; | |
2518 | ||
acebe8c1 | 2519 | mwifiex_dbg(adapter, INFO, "info: EXT scan returns successfully\n"); |
21445049 | 2520 | |
bf354433 AP |
2521 | ext_scan_resp = &resp->params.ext_scan; |
2522 | ||
2523 | tlv = (void *)ext_scan_resp->tlv_buffer; | |
2524 | buf_left = le16_to_cpu(resp->size) - (sizeof(*ext_scan_resp) + S_DS_GEN | |
2525 | - 1); | |
2526 | ||
2527 | while (buf_left >= sizeof(struct mwifiex_ie_types_header)) { | |
2528 | type = le16_to_cpu(tlv->type); | |
2529 | len = le16_to_cpu(tlv->len); | |
2530 | ||
2531 | if (buf_left < (sizeof(struct mwifiex_ie_types_header) + len)) { | |
acebe8c1 ZL |
2532 | mwifiex_dbg(adapter, ERROR, |
2533 | "error processing scan response TLVs"); | |
bf354433 AP |
2534 | break; |
2535 | } | |
2536 | ||
2537 | switch (type) { | |
2538 | case TLV_TYPE_CHANNEL_STATS: | |
2539 | tlv_stat = (void *)tlv; | |
2540 | mwifiex_update_chan_statistics(priv, tlv_stat); | |
2541 | break; | |
2542 | default: | |
2543 | break; | |
2544 | } | |
2545 | ||
2546 | buf_left -= len + sizeof(struct mwifiex_ie_types_header); | |
2547 | tlv = (void *)((u8 *)tlv + len + | |
2548 | sizeof(struct mwifiex_ie_types_header)); | |
2549 | } | |
2550 | ||
3223db20 AP |
2551 | spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_flags); |
2552 | spin_lock_irqsave(&adapter->scan_pending_q_lock, scan_flags); | |
2553 | if (list_empty(&adapter->scan_pending_q)) { | |
2554 | complete_scan = true; | |
2555 | list_for_each_entry(cmd_node, &adapter->cmd_pending_q, list) { | |
2556 | cmd_ptr = (void *)cmd_node->cmd_skb->data; | |
2557 | if (le16_to_cpu(cmd_ptr->command) == | |
2558 | HostCmd_CMD_802_11_SCAN_EXT) { | |
acebe8c1 ZL |
2559 | mwifiex_dbg(adapter, INFO, |
2560 | "Scan pending in command pending list"); | |
3223db20 AP |
2561 | complete_scan = false; |
2562 | break; | |
2563 | } | |
2564 | } | |
2565 | } | |
2566 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, scan_flags); | |
2567 | spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, cmd_flags); | |
2568 | ||
2569 | if (complete_scan) | |
2570 | mwifiex_complete_scan(priv); | |
21445049 | 2571 | |
21f58d20 AK |
2572 | return 0; |
2573 | } | |
2574 | ||
2575 | /* This function This function handles the event extended scan report. It | |
2576 | * parses extended scan results and informs to cfg80211 stack. | |
2577 | */ | |
2578 | int mwifiex_handle_event_ext_scan_report(struct mwifiex_private *priv, | |
2579 | void *buf) | |
2580 | { | |
2581 | int ret = 0; | |
2582 | struct mwifiex_adapter *adapter = priv->adapter; | |
2583 | u8 *bss_info; | |
2584 | u32 bytes_left, bytes_left_for_tlv, idx; | |
2585 | u16 type, len; | |
2586 | struct mwifiex_ie_types_data *tlv; | |
2587 | struct mwifiex_ie_types_bss_scan_rsp *scan_rsp_tlv; | |
2588 | struct mwifiex_ie_types_bss_scan_info *scan_info_tlv; | |
2589 | u8 *radio_type; | |
2590 | u64 fw_tsf = 0; | |
2591 | s32 rssi = 0; | |
2592 | struct mwifiex_event_scan_result *event_scan = buf; | |
2593 | u8 num_of_set = event_scan->num_of_set; | |
2594 | u8 *scan_resp = buf + sizeof(struct mwifiex_event_scan_result); | |
2595 | u16 scan_resp_size = le16_to_cpu(event_scan->buf_size); | |
2596 | ||
2597 | if (num_of_set > MWIFIEX_MAX_AP) { | |
acebe8c1 ZL |
2598 | mwifiex_dbg(adapter, ERROR, |
2599 | "EXT_SCAN: Invalid number of AP returned (%d)!!\n", | |
2600 | num_of_set); | |
21f58d20 AK |
2601 | ret = -1; |
2602 | goto check_next_scan; | |
2603 | } | |
2604 | ||
2605 | bytes_left = scan_resp_size; | |
acebe8c1 ZL |
2606 | mwifiex_dbg(adapter, INFO, |
2607 | "EXT_SCAN: size %d, returned %d APs...", | |
2608 | scan_resp_size, num_of_set); | |
868093a9 ZL |
2609 | mwifiex_dbg_dump(adapter, CMD_D, "EXT_SCAN buffer:", buf, |
2610 | scan_resp_size + | |
2611 | sizeof(struct mwifiex_event_scan_result)); | |
21f58d20 AK |
2612 | |
2613 | tlv = (struct mwifiex_ie_types_data *)scan_resp; | |
2614 | ||
2615 | for (idx = 0; idx < num_of_set && bytes_left; idx++) { | |
2616 | type = le16_to_cpu(tlv->header.type); | |
2617 | len = le16_to_cpu(tlv->header.len); | |
2618 | if (bytes_left < sizeof(struct mwifiex_ie_types_header) + len) { | |
acebe8c1 ZL |
2619 | mwifiex_dbg(adapter, ERROR, |
2620 | "EXT_SCAN: Error bytes left < TLV length\n"); | |
21f58d20 AK |
2621 | break; |
2622 | } | |
2623 | scan_rsp_tlv = NULL; | |
2624 | scan_info_tlv = NULL; | |
2625 | bytes_left_for_tlv = bytes_left; | |
2626 | ||
2627 | /* BSS response TLV with beacon or probe response buffer | |
2628 | * at the initial position of each descriptor | |
2629 | */ | |
2630 | if (type != TLV_TYPE_BSS_SCAN_RSP) | |
2631 | break; | |
2632 | ||
2633 | bss_info = (u8 *)tlv; | |
2634 | scan_rsp_tlv = (struct mwifiex_ie_types_bss_scan_rsp *)tlv; | |
2635 | tlv = (struct mwifiex_ie_types_data *)(tlv->data + len); | |
2636 | bytes_left_for_tlv -= | |
2637 | (len + sizeof(struct mwifiex_ie_types_header)); | |
2638 | ||
2639 | while (bytes_left_for_tlv >= | |
2640 | sizeof(struct mwifiex_ie_types_header) && | |
2641 | le16_to_cpu(tlv->header.type) != TLV_TYPE_BSS_SCAN_RSP) { | |
2642 | type = le16_to_cpu(tlv->header.type); | |
2643 | len = le16_to_cpu(tlv->header.len); | |
2644 | if (bytes_left_for_tlv < | |
2645 | sizeof(struct mwifiex_ie_types_header) + len) { | |
acebe8c1 ZL |
2646 | mwifiex_dbg(adapter, ERROR, |
2647 | "EXT_SCAN: Error in processing TLV,\t" | |
2648 | "bytes left < TLV length\n"); | |
21f58d20 AK |
2649 | scan_rsp_tlv = NULL; |
2650 | bytes_left_for_tlv = 0; | |
2651 | continue; | |
2652 | } | |
2653 | switch (type) { | |
2654 | case TLV_TYPE_BSS_SCAN_INFO: | |
2655 | scan_info_tlv = | |
2656 | (struct mwifiex_ie_types_bss_scan_info *)tlv; | |
2657 | if (len != | |
2658 | sizeof(struct mwifiex_ie_types_bss_scan_info) - | |
2659 | sizeof(struct mwifiex_ie_types_header)) { | |
2660 | bytes_left_for_tlv = 0; | |
2661 | continue; | |
2662 | } | |
2663 | break; | |
2664 | default: | |
2665 | break; | |
2666 | } | |
2667 | tlv = (struct mwifiex_ie_types_data *)(tlv->data + len); | |
2668 | bytes_left -= | |
2669 | (len + sizeof(struct mwifiex_ie_types_header)); | |
2670 | bytes_left_for_tlv -= | |
2671 | (len + sizeof(struct mwifiex_ie_types_header)); | |
2672 | } | |
2673 | ||
2674 | if (!scan_rsp_tlv) | |
2675 | break; | |
2676 | ||
2677 | /* Advance pointer to the beacon buffer length and | |
2678 | * update the bytes count so that the function | |
2679 | * wlan_interpret_bss_desc_with_ie() can handle the | |
2680 | * scan buffer withut any change | |
2681 | */ | |
2682 | bss_info += sizeof(u16); | |
2683 | bytes_left -= sizeof(u16); | |
2684 | ||
2685 | if (scan_info_tlv) { | |
2686 | rssi = (s32)(s16)(le16_to_cpu(scan_info_tlv->rssi)); | |
2687 | rssi *= 100; /* Convert dBm to mBm */ | |
acebe8c1 ZL |
2688 | mwifiex_dbg(adapter, INFO, |
2689 | "info: InterpretIE: RSSI=%d\n", rssi); | |
21f58d20 AK |
2690 | fw_tsf = le64_to_cpu(scan_info_tlv->tsf); |
2691 | radio_type = &scan_info_tlv->radio_type; | |
2692 | } else { | |
2693 | radio_type = NULL; | |
2694 | } | |
2695 | ret = mwifiex_parse_single_response_buf(priv, &bss_info, | |
2696 | &bytes_left, fw_tsf, | |
2697 | radio_type, true, rssi); | |
2698 | if (ret) | |
2699 | goto check_next_scan; | |
2700 | } | |
2701 | ||
2702 | check_next_scan: | |
2703 | if (!event_scan->more_event) | |
2704 | mwifiex_check_next_scan_command(priv); | |
2705 | ||
2706 | return ret; | |
2707 | } | |
2708 | ||
5e6e3a92 BZ |
2709 | /* |
2710 | * This function prepares command for background scan query. | |
2711 | * | |
2712 | * Preparation includes - | |
2713 | * - Setting command ID and proper size | |
2714 | * - Setting background scan flush parameter | |
2715 | * - Ensuring correct endian-ness | |
2716 | */ | |
572e8f3e | 2717 | int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command *cmd) |
5e6e3a92 BZ |
2718 | { |
2719 | struct host_cmd_ds_802_11_bg_scan_query *bg_query = | |
2720 | &cmd->params.bg_scan_query; | |
2721 | ||
2722 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY); | |
2723 | cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query) | |
2724 | + S_DS_GEN); | |
2725 | ||
2726 | bg_query->flush = 1; | |
2727 | ||
2728 | return 0; | |
2729 | } | |
2730 | ||
5e6e3a92 BZ |
2731 | /* |
2732 | * This function inserts scan command node to the scan pending queue. | |
2733 | */ | |
2734 | void | |
2735 | mwifiex_queue_scan_cmd(struct mwifiex_private *priv, | |
2736 | struct cmd_ctrl_node *cmd_node) | |
2737 | { | |
2738 | struct mwifiex_adapter *adapter = priv->adapter; | |
2739 | unsigned long flags; | |
2740 | ||
600f5d90 | 2741 | cmd_node->wait_q_enabled = true; |
efaaa8b8 | 2742 | cmd_node->condition = &adapter->scan_wait_q_woken; |
5e6e3a92 BZ |
2743 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); |
2744 | list_add_tail(&cmd_node->list, &adapter->scan_pending_q); | |
2745 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
2746 | } | |
2747 | ||
5e6e3a92 BZ |
2748 | /* |
2749 | * This function sends a scan command for all available channels to the | |
2750 | * firmware, filtered on a specific SSID. | |
2751 | */ | |
2752 | static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv, | |
b9be5f39 | 2753 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 BZ |
2754 | { |
2755 | struct mwifiex_adapter *adapter = priv->adapter; | |
dcd5c79c | 2756 | int ret; |
5e6e3a92 BZ |
2757 | struct mwifiex_user_scan_cfg *scan_cfg; |
2758 | ||
600f5d90 | 2759 | if (adapter->scan_processing) { |
acebe8c1 ZL |
2760 | mwifiex_dbg(adapter, WARN, |
2761 | "cmd: Scan already in process...\n"); | |
dcd5c79c | 2762 | return -EBUSY; |
5e6e3a92 BZ |
2763 | } |
2764 | ||
600f5d90 | 2765 | if (priv->scan_block) { |
acebe8c1 ZL |
2766 | mwifiex_dbg(adapter, WARN, |
2767 | "cmd: Scan is blocked during association...\n"); | |
dcd5c79c | 2768 | return -EBUSY; |
5e6e3a92 BZ |
2769 | } |
2770 | ||
5e6e3a92 | 2771 | scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg), GFP_KERNEL); |
0d2e7a5c | 2772 | if (!scan_cfg) |
b53575ec | 2773 | return -ENOMEM; |
5e6e3a92 | 2774 | |
c2a8f0ff | 2775 | ether_addr_copy(scan_cfg->random_mac, priv->random_mac); |
be0b281e AK |
2776 | scan_cfg->ssid_list = req_ssid; |
2777 | scan_cfg->num_ssids = 1; | |
5e6e3a92 | 2778 | |
600f5d90 | 2779 | ret = mwifiex_scan_networks(priv, scan_cfg); |
5e6e3a92 BZ |
2780 | |
2781 | kfree(scan_cfg); | |
2782 | return ret; | |
2783 | } | |
2784 | ||
2785 | /* | |
2786 | * Sends IOCTL request to start a scan. | |
2787 | * | |
2788 | * This function allocates the IOCTL request buffer, fills it | |
2789 | * with requisite parameters and calls the IOCTL handler. | |
2790 | * | |
2791 | * Scan command can be issued for both normal scan and specific SSID | |
2792 | * scan, depending upon whether an SSID is provided or not. | |
2793 | */ | |
600f5d90 | 2794 | int mwifiex_request_scan(struct mwifiex_private *priv, |
b9be5f39 | 2795 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 | 2796 | { |
270e58e8 | 2797 | int ret; |
5e6e3a92 BZ |
2798 | |
2799 | if (down_interruptible(&priv->async_sem)) { | |
acebe8c1 ZL |
2800 | mwifiex_dbg(priv->adapter, ERROR, |
2801 | "%s: acquire semaphore fail\n", | |
2802 | __func__); | |
5e6e3a92 BZ |
2803 | return -1; |
2804 | } | |
5e6e3a92 | 2805 | |
efaaa8b8 | 2806 | priv->adapter->scan_wait_q_woken = false; |
5e6e3a92 BZ |
2807 | |
2808 | if (req_ssid && req_ssid->ssid_len != 0) | |
2809 | /* Specific SSID scan */ | |
600f5d90 | 2810 | ret = mwifiex_scan_specific_ssid(priv, req_ssid); |
5e6e3a92 BZ |
2811 | else |
2812 | /* Normal scan */ | |
600f5d90 AK |
2813 | ret = mwifiex_scan_networks(priv, NULL); |
2814 | ||
b0e70c2f | 2815 | up(&priv->async_sem); |
600f5d90 | 2816 | |
5e6e3a92 BZ |
2817 | return ret; |
2818 | } | |
2819 | ||
2820 | /* | |
2821 | * This function appends the vendor specific IE TLV to a buffer. | |
2822 | */ | |
2823 | int | |
2824 | mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv, | |
2825 | u16 vsie_mask, u8 **buffer) | |
2826 | { | |
2827 | int id, ret_len = 0; | |
2828 | struct mwifiex_ie_types_vendor_param_set *vs_param_set; | |
2829 | ||
2830 | if (!buffer) | |
2831 | return 0; | |
2832 | if (!(*buffer)) | |
2833 | return 0; | |
2834 | ||
2835 | /* | |
2836 | * Traverse through the saved vendor specific IE array and append | |
2837 | * the selected(scan/assoc/adhoc) IE as TLV to the command | |
2838 | */ | |
2839 | for (id = 0; id < MWIFIEX_MAX_VSIE_NUM; id++) { | |
2840 | if (priv->vs_ie[id].mask & vsie_mask) { | |
2841 | vs_param_set = | |
2842 | (struct mwifiex_ie_types_vendor_param_set *) | |
2843 | *buffer; | |
2844 | vs_param_set->header.type = | |
2845 | cpu_to_le16(TLV_TYPE_PASSTHROUGH); | |
2846 | vs_param_set->header.len = | |
2847 | cpu_to_le16((((u16) priv->vs_ie[id].ie[1]) | |
2848 | & 0x00FF) + 2); | |
2849 | memcpy(vs_param_set->ie, priv->vs_ie[id].ie, | |
2850 | le16_to_cpu(vs_param_set->header.len)); | |
2851 | *buffer += le16_to_cpu(vs_param_set->header.len) + | |
2852 | sizeof(struct mwifiex_ie_types_header); | |
2853 | ret_len += le16_to_cpu(vs_param_set->header.len) + | |
2854 | sizeof(struct mwifiex_ie_types_header); | |
2855 | } | |
2856 | } | |
2857 | return ret_len; | |
2858 | } | |
2859 | ||
2860 | /* | |
2861 | * This function saves a beacon buffer of the current BSS descriptor. | |
2862 | * | |
2863 | * The current beacon buffer is saved so that it can be restored in the | |
2864 | * following cases that makes the beacon buffer not to contain the current | |
2865 | * ssid's beacon buffer. | |
2866 | * - The current ssid was not found somehow in the last scan. | |
2867 | * - The current ssid was the last entry of the scan table and overloaded. | |
2868 | */ | |
2869 | void | |
2870 | mwifiex_save_curr_bcn(struct mwifiex_private *priv) | |
2871 | { | |
2872 | struct mwifiex_bssdescriptor *curr_bss = | |
2873 | &priv->curr_bss_params.bss_descriptor; | |
2874 | ||
030fe797 AK |
2875 | if (!curr_bss->beacon_buf_size) |
2876 | return; | |
5e6e3a92 | 2877 | |
030fe797 AK |
2878 | /* allocate beacon buffer at 1st time; or if it's size has changed */ |
2879 | if (!priv->curr_bcn_buf || | |
cff23cec | 2880 | priv->curr_bcn_size != curr_bss->beacon_buf_size) { |
5e6e3a92 | 2881 | priv->curr_bcn_size = curr_bss->beacon_buf_size; |
5e6e3a92 | 2882 | |
030fe797 | 2883 | kfree(priv->curr_bcn_buf); |
5982b47a | 2884 | priv->curr_bcn_buf = kmalloc(curr_bss->beacon_buf_size, |
cff23cec | 2885 | GFP_ATOMIC); |
0d2e7a5c | 2886 | if (!priv->curr_bcn_buf) |
030fe797 | 2887 | return; |
5e6e3a92 | 2888 | } |
030fe797 AK |
2889 | |
2890 | memcpy(priv->curr_bcn_buf, curr_bss->beacon_buf, | |
cff23cec | 2891 | curr_bss->beacon_buf_size); |
acebe8c1 ZL |
2892 | mwifiex_dbg(priv->adapter, INFO, |
2893 | "info: current beacon saved %d\n", | |
2894 | priv->curr_bcn_size); | |
7c6fa2a8 AK |
2895 | |
2896 | curr_bss->beacon_buf = priv->curr_bcn_buf; | |
2897 | ||
2898 | /* adjust the pointers in the current BSS descriptor */ | |
2899 | if (curr_bss->bcn_wpa_ie) | |
2900 | curr_bss->bcn_wpa_ie = | |
2901 | (struct ieee_types_vendor_specific *) | |
2902 | (curr_bss->beacon_buf + | |
2903 | curr_bss->wpa_offset); | |
2904 | ||
2905 | if (curr_bss->bcn_rsn_ie) | |
2906 | curr_bss->bcn_rsn_ie = (struct ieee_types_generic *) | |
2907 | (curr_bss->beacon_buf + | |
2908 | curr_bss->rsn_offset); | |
2909 | ||
2910 | if (curr_bss->bcn_ht_cap) | |
2911 | curr_bss->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
2912 | (curr_bss->beacon_buf + | |
2913 | curr_bss->ht_cap_offset); | |
2914 | ||
074d46d1 JB |
2915 | if (curr_bss->bcn_ht_oper) |
2916 | curr_bss->bcn_ht_oper = (struct ieee80211_ht_operation *) | |
7c6fa2a8 AK |
2917 | (curr_bss->beacon_buf + |
2918 | curr_bss->ht_info_offset); | |
2919 | ||
a5f39056 | 2920 | if (curr_bss->bcn_vht_cap) |
d5124648 AK |
2921 | curr_bss->bcn_vht_cap = (void *)(curr_bss->beacon_buf + |
2922 | curr_bss->vht_cap_offset); | |
a5f39056 YAP |
2923 | |
2924 | if (curr_bss->bcn_vht_oper) | |
d5124648 AK |
2925 | curr_bss->bcn_vht_oper = (void *)(curr_bss->beacon_buf + |
2926 | curr_bss->vht_info_offset); | |
a5f39056 | 2927 | |
7c6fa2a8 AK |
2928 | if (curr_bss->bcn_bss_co_2040) |
2929 | curr_bss->bcn_bss_co_2040 = | |
2c208890 | 2930 | (curr_bss->beacon_buf + curr_bss->bss_co_2040_offset); |
7c6fa2a8 AK |
2931 | |
2932 | if (curr_bss->bcn_ext_cap) | |
2c208890 JP |
2933 | curr_bss->bcn_ext_cap = curr_bss->beacon_buf + |
2934 | curr_bss->ext_cap_offset; | |
a5f39056 YAP |
2935 | |
2936 | if (curr_bss->oper_mode) | |
2937 | curr_bss->oper_mode = (void *)(curr_bss->beacon_buf + | |
2938 | curr_bss->oper_mode_offset); | |
5e6e3a92 BZ |
2939 | } |
2940 | ||
2941 | /* | |
2942 | * This function frees the current BSS descriptor beacon buffer. | |
2943 | */ | |
2944 | void | |
2945 | mwifiex_free_curr_bcn(struct mwifiex_private *priv) | |
2946 | { | |
2947 | kfree(priv->curr_bcn_buf); | |
2948 | priv->curr_bcn_buf = NULL; | |
2949 | } |