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5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: scan ioctl and command handling | |
3 | * | |
4 | * Copyright (C) 2011, Marvell International Ltd. | |
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 AK |
31 | #define MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD 4 |
32 | #define MWIFIEX_LIMIT_1_CHANNEL_PER_SCAN_CMD 15 | |
33 | #define MWIFIEX_LIMIT_2_CHANNELS_PER_SCAN_CMD 27 | |
34 | #define MWIFIEX_LIMIT_3_CHANNELS_PER_SCAN_CMD 35 | |
5e6e3a92 BZ |
35 | |
36 | /* Memory needed to store a max sized Channel List TLV for a firmware scan */ | |
37 | #define CHAN_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_header) \ | |
38 | + (MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN \ | |
39 | *sizeof(struct mwifiex_chan_scan_param_set))) | |
40 | ||
41 | /* Memory needed to store supported rate */ | |
42 | #define RATE_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_rates_param_set) \ | |
43 | + HOSTCMD_SUPPORTED_RATES) | |
44 | ||
45 | /* Memory needed to store a max number/size WildCard SSID TLV for a firmware | |
46 | scan */ | |
47 | #define WILDCARD_SSID_TLV_MAX_SIZE \ | |
48 | (MWIFIEX_MAX_SSID_LIST_LENGTH * \ | |
49 | (sizeof(struct mwifiex_ie_types_wildcard_ssid_params) \ | |
50 | + IEEE80211_MAX_SSID_LEN)) | |
51 | ||
52 | /* Maximum memory needed for a mwifiex_scan_cmd_config with all TLVs at max */ | |
53 | #define MAX_SCAN_CFG_ALLOC (sizeof(struct mwifiex_scan_cmd_config) \ | |
54 | + sizeof(struct mwifiex_ie_types_num_probes) \ | |
55 | + sizeof(struct mwifiex_ie_types_htcap) \ | |
56 | + CHAN_TLV_MAX_SIZE \ | |
57 | + RATE_TLV_MAX_SIZE \ | |
58 | + WILDCARD_SSID_TLV_MAX_SIZE) | |
59 | ||
60 | ||
61 | union mwifiex_scan_cmd_config_tlv { | |
62 | /* Scan configuration (variable length) */ | |
63 | struct mwifiex_scan_cmd_config config; | |
64 | /* Max allocated block */ | |
65 | u8 config_alloc_buf[MAX_SCAN_CFG_ALLOC]; | |
66 | }; | |
67 | ||
68 | enum cipher_suite { | |
69 | CIPHER_SUITE_TKIP, | |
70 | CIPHER_SUITE_CCMP, | |
71 | CIPHER_SUITE_MAX | |
72 | }; | |
73 | static u8 mwifiex_wpa_oui[CIPHER_SUITE_MAX][4] = { | |
74 | { 0x00, 0x50, 0xf2, 0x02 }, /* TKIP */ | |
75 | { 0x00, 0x50, 0xf2, 0x04 }, /* AES */ | |
76 | }; | |
77 | static u8 mwifiex_rsn_oui[CIPHER_SUITE_MAX][4] = { | |
78 | { 0x00, 0x0f, 0xac, 0x02 }, /* TKIP */ | |
79 | { 0x00, 0x0f, 0xac, 0x04 }, /* AES */ | |
80 | }; | |
81 | ||
82 | /* | |
83 | * This function parses a given IE for a given OUI. | |
84 | * | |
85 | * This is used to parse a WPA/RSN IE to find if it has | |
86 | * a given oui in PTK. | |
87 | */ | |
88 | static u8 | |
89 | mwifiex_search_oui_in_ie(struct ie_body *iebody, u8 *oui) | |
90 | { | |
91 | u8 count; | |
92 | ||
93 | count = iebody->ptk_cnt[0]; | |
94 | ||
95 | /* There could be multiple OUIs for PTK hence | |
96 | 1) Take the length. | |
97 | 2) Check all the OUIs for AES. | |
98 | 3) If one of them is AES then pass success. */ | |
99 | while (count) { | |
100 | if (!memcmp(iebody->ptk_body, oui, sizeof(iebody->ptk_body))) | |
101 | return MWIFIEX_OUI_PRESENT; | |
102 | ||
103 | --count; | |
104 | if (count) | |
105 | iebody = (struct ie_body *) ((u8 *) iebody + | |
106 | sizeof(iebody->ptk_body)); | |
107 | } | |
108 | ||
109 | pr_debug("info: %s: OUI is not found in PTK\n", __func__); | |
110 | return MWIFIEX_OUI_NOT_PRESENT; | |
111 | } | |
112 | ||
113 | /* | |
114 | * This function checks if a given OUI is present in a RSN IE. | |
115 | * | |
116 | * The function first checks if a RSN IE is present or not in the | |
117 | * BSS descriptor. It tries to locate the OUI only if such an IE is | |
118 | * present. | |
119 | */ | |
120 | static u8 | |
121 | mwifiex_is_rsn_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher) | |
122 | { | |
270e58e8 YAP |
123 | u8 *oui; |
124 | struct ie_body *iebody; | |
5e6e3a92 BZ |
125 | u8 ret = MWIFIEX_OUI_NOT_PRESENT; |
126 | ||
127 | if (((bss_desc->bcn_rsn_ie) && ((*(bss_desc->bcn_rsn_ie)). | |
128 | ieee_hdr.element_id == WLAN_EID_RSN))) { | |
129 | iebody = (struct ie_body *) | |
130 | (((u8 *) bss_desc->bcn_rsn_ie->data) + | |
cff23cec | 131 | RSN_GTK_OUI_OFFSET); |
5e6e3a92 BZ |
132 | oui = &mwifiex_rsn_oui[cipher][0]; |
133 | ret = mwifiex_search_oui_in_ie(iebody, oui); | |
134 | if (ret) | |
135 | return ret; | |
136 | } | |
137 | return ret; | |
138 | } | |
139 | ||
140 | /* | |
141 | * This function checks if a given OUI is present in a WPA IE. | |
142 | * | |
143 | * The function first checks if a WPA IE is present or not in the | |
144 | * BSS descriptor. It tries to locate the OUI only if such an IE is | |
145 | * present. | |
146 | */ | |
147 | static u8 | |
148 | mwifiex_is_wpa_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher) | |
149 | { | |
270e58e8 YAP |
150 | u8 *oui; |
151 | struct ie_body *iebody; | |
5e6e3a92 BZ |
152 | u8 ret = MWIFIEX_OUI_NOT_PRESENT; |
153 | ||
cff23cec YAP |
154 | if (((bss_desc->bcn_wpa_ie) && |
155 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id == | |
156 | WLAN_EID_WPA))) { | |
5e6e3a92 BZ |
157 | iebody = (struct ie_body *) bss_desc->bcn_wpa_ie->data; |
158 | oui = &mwifiex_wpa_oui[cipher][0]; | |
159 | ret = mwifiex_search_oui_in_ie(iebody, oui); | |
160 | if (ret) | |
161 | return ret; | |
162 | } | |
163 | return ret; | |
164 | } | |
165 | ||
166 | /* | |
167 | * This function compares two SSIDs and checks if they match. | |
168 | */ | |
169 | s32 | |
b9be5f39 | 170 | mwifiex_ssid_cmp(struct cfg80211_ssid *ssid1, struct cfg80211_ssid *ssid2) |
5e6e3a92 BZ |
171 | { |
172 | if (!ssid1 || !ssid2 || (ssid1->ssid_len != ssid2->ssid_len)) | |
173 | return -1; | |
174 | return memcmp(ssid1->ssid, ssid2->ssid, ssid1->ssid_len); | |
175 | } | |
176 | ||
5e6e3a92 BZ |
177 | /* |
178 | * This function checks if wapi is enabled in driver and scanned network is | |
179 | * compatible with it. | |
180 | */ | |
181 | static bool | |
cff23cec YAP |
182 | mwifiex_is_bss_wapi(struct mwifiex_private *priv, |
183 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 BZ |
184 | { |
185 | if (priv->sec_info.wapi_enabled && | |
186 | (bss_desc->bcn_wapi_ie && | |
187 | ((*(bss_desc->bcn_wapi_ie)).ieee_hdr.element_id == | |
188 | WLAN_EID_BSS_AC_ACCESS_DELAY))) { | |
189 | return true; | |
190 | } | |
191 | return false; | |
192 | } | |
193 | ||
194 | /* | |
195 | * This function checks if driver is configured with no security mode and | |
196 | * scanned network is compatible with it. | |
197 | */ | |
198 | static bool | |
cff23cec YAP |
199 | mwifiex_is_bss_no_sec(struct mwifiex_private *priv, |
200 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 201 | { |
5eb02e44 AK |
202 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
203 | !priv->sec_info.wpa2_enabled && ((!bss_desc->bcn_wpa_ie) || | |
5e6e3a92 | 204 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != |
cff23cec YAP |
205 | WLAN_EID_WPA)) && |
206 | ((!bss_desc->bcn_rsn_ie) || | |
5e6e3a92 | 207 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != |
cff23cec YAP |
208 | WLAN_EID_RSN)) && |
209 | !priv->sec_info.encryption_mode && !bss_desc->privacy) { | |
5e6e3a92 BZ |
210 | return true; |
211 | } | |
212 | return false; | |
213 | } | |
214 | ||
215 | /* | |
216 | * This function checks if static WEP is enabled in driver and scanned network | |
217 | * is compatible with it. | |
218 | */ | |
219 | static bool | |
cff23cec YAP |
220 | mwifiex_is_bss_static_wep(struct mwifiex_private *priv, |
221 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 222 | { |
5eb02e44 AK |
223 | if (priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
224 | !priv->sec_info.wpa2_enabled && bss_desc->privacy) { | |
5e6e3a92 BZ |
225 | return true; |
226 | } | |
227 | return false; | |
228 | } | |
229 | ||
230 | /* | |
231 | * This function checks if wpa is enabled in driver and scanned network is | |
232 | * compatible with it. | |
233 | */ | |
234 | static bool | |
cff23cec YAP |
235 | mwifiex_is_bss_wpa(struct mwifiex_private *priv, |
236 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 237 | { |
5eb02e44 AK |
238 | if (!priv->sec_info.wep_enabled && priv->sec_info.wpa_enabled && |
239 | !priv->sec_info.wpa2_enabled && ((bss_desc->bcn_wpa_ie) && | |
240 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id == WLAN_EID_WPA)) | |
5e6e3a92 BZ |
241 | /* |
242 | * Privacy bit may NOT be set in some APs like | |
243 | * LinkSys WRT54G && bss_desc->privacy | |
244 | */ | |
245 | ) { | |
7c6fa2a8 | 246 | dev_dbg(priv->adapter->dev, "info: %s: WPA:" |
5e6e3a92 | 247 | " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " |
7c6fa2a8 | 248 | "EncMode=%#x privacy=%#x\n", __func__, |
5e6e3a92 BZ |
249 | (bss_desc->bcn_wpa_ie) ? |
250 | (*(bss_desc->bcn_wpa_ie)). | |
251 | vend_hdr.element_id : 0, | |
252 | (bss_desc->bcn_rsn_ie) ? | |
253 | (*(bss_desc->bcn_rsn_ie)). | |
254 | ieee_hdr.element_id : 0, | |
5eb02e44 | 255 | (priv->sec_info.wep_enabled) ? "e" : "d", |
5e6e3a92 BZ |
256 | (priv->sec_info.wpa_enabled) ? "e" : "d", |
257 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
258 | priv->sec_info.encryption_mode, | |
259 | bss_desc->privacy); | |
260 | return true; | |
261 | } | |
262 | return false; | |
263 | } | |
264 | ||
265 | /* | |
266 | * This function checks if wpa2 is enabled in driver and scanned network is | |
267 | * compatible with it. | |
268 | */ | |
269 | static bool | |
cff23cec YAP |
270 | mwifiex_is_bss_wpa2(struct mwifiex_private *priv, |
271 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 272 | { |
cff23cec YAP |
273 | if (!priv->sec_info.wep_enabled && |
274 | !priv->sec_info.wpa_enabled && | |
275 | priv->sec_info.wpa2_enabled && | |
276 | ((bss_desc->bcn_rsn_ie) && | |
277 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id == WLAN_EID_RSN))) { | |
278 | /* | |
279 | * Privacy bit may NOT be set in some APs like | |
280 | * LinkSys WRT54G && bss_desc->privacy | |
281 | */ | |
7c6fa2a8 | 282 | dev_dbg(priv->adapter->dev, "info: %s: WPA2: " |
5e6e3a92 | 283 | " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " |
7c6fa2a8 | 284 | "EncMode=%#x privacy=%#x\n", __func__, |
5e6e3a92 BZ |
285 | (bss_desc->bcn_wpa_ie) ? |
286 | (*(bss_desc->bcn_wpa_ie)). | |
287 | vend_hdr.element_id : 0, | |
288 | (bss_desc->bcn_rsn_ie) ? | |
289 | (*(bss_desc->bcn_rsn_ie)). | |
290 | ieee_hdr.element_id : 0, | |
5eb02e44 | 291 | (priv->sec_info.wep_enabled) ? "e" : "d", |
5e6e3a92 BZ |
292 | (priv->sec_info.wpa_enabled) ? "e" : "d", |
293 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
294 | priv->sec_info.encryption_mode, | |
295 | bss_desc->privacy); | |
296 | return true; | |
297 | } | |
298 | return false; | |
299 | } | |
300 | ||
301 | /* | |
302 | * This function checks if adhoc AES is enabled in driver and scanned network is | |
303 | * compatible with it. | |
304 | */ | |
305 | static bool | |
cff23cec YAP |
306 | mwifiex_is_bss_adhoc_aes(struct mwifiex_private *priv, |
307 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 308 | { |
5eb02e44 | 309 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec YAP |
310 | !priv->sec_info.wpa2_enabled && |
311 | ((!bss_desc->bcn_wpa_ie) || | |
312 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != WLAN_EID_WPA)) && | |
313 | ((!bss_desc->bcn_rsn_ie) || | |
314 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != WLAN_EID_RSN)) && | |
315 | !priv->sec_info.encryption_mode && bss_desc->privacy) { | |
5e6e3a92 BZ |
316 | return true; |
317 | } | |
318 | return false; | |
319 | } | |
320 | ||
321 | /* | |
322 | * This function checks if dynamic WEP is enabled in driver and scanned network | |
323 | * is compatible with it. | |
324 | */ | |
325 | static bool | |
cff23cec YAP |
326 | mwifiex_is_bss_dynamic_wep(struct mwifiex_private *priv, |
327 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 328 | { |
5eb02e44 | 329 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec YAP |
330 | !priv->sec_info.wpa2_enabled && |
331 | ((!bss_desc->bcn_wpa_ie) || | |
332 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != WLAN_EID_WPA)) && | |
333 | ((!bss_desc->bcn_rsn_ie) || | |
334 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != WLAN_EID_RSN)) && | |
335 | priv->sec_info.encryption_mode && bss_desc->privacy) { | |
5e6e3a92 | 336 | dev_dbg(priv->adapter->dev, "info: %s: dynamic " |
7c6fa2a8 | 337 | "WEP: wpa_ie=%#x wpa2_ie=%#x " |
5e6e3a92 | 338 | "EncMode=%#x privacy=%#x\n", |
7c6fa2a8 | 339 | __func__, |
5e6e3a92 BZ |
340 | (bss_desc->bcn_wpa_ie) ? |
341 | (*(bss_desc->bcn_wpa_ie)). | |
342 | vend_hdr.element_id : 0, | |
343 | (bss_desc->bcn_rsn_ie) ? | |
344 | (*(bss_desc->bcn_rsn_ie)). | |
345 | ieee_hdr.element_id : 0, | |
346 | priv->sec_info.encryption_mode, | |
347 | bss_desc->privacy); | |
348 | return true; | |
349 | } | |
350 | return false; | |
351 | } | |
352 | ||
353 | /* | |
354 | * This function checks if a scanned network is compatible with the driver | |
355 | * settings. | |
356 | * | |
357 | * WEP WPA WPA2 ad-hoc encrypt Network | |
358 | * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible | |
359 | * 0 0 0 0 NONE 0 0 0 yes No security | |
360 | * 0 1 0 0 x 1x 1 x yes WPA (disable | |
361 | * HT if no AES) | |
362 | * 0 0 1 0 x 1x x 1 yes WPA2 (disable | |
363 | * HT if no AES) | |
364 | * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES | |
365 | * 1 0 0 0 NONE 1 0 0 yes Static WEP | |
366 | * (disable HT) | |
367 | * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP | |
368 | * | |
369 | * Compatibility is not matched while roaming, except for mode. | |
370 | */ | |
371 | static s32 | |
7c6fa2a8 AK |
372 | mwifiex_is_network_compatible(struct mwifiex_private *priv, |
373 | struct mwifiex_bssdescriptor *bss_desc, u32 mode) | |
5e6e3a92 BZ |
374 | { |
375 | struct mwifiex_adapter *adapter = priv->adapter; | |
5e6e3a92 | 376 | |
5e6e3a92 BZ |
377 | bss_desc->disable_11n = false; |
378 | ||
379 | /* Don't check for compatibility if roaming */ | |
cff23cec YAP |
380 | if (priv->media_connected && |
381 | (priv->bss_mode == NL80211_IFTYPE_STATION) && | |
382 | (bss_desc->bss_mode == NL80211_IFTYPE_STATION)) | |
7c6fa2a8 | 383 | return 0; |
5e6e3a92 BZ |
384 | |
385 | if (priv->wps.session_enable) { | |
386 | dev_dbg(adapter->dev, | |
387 | "info: return success directly in WPS period\n"); | |
7c6fa2a8 | 388 | return 0; |
5e6e3a92 BZ |
389 | } |
390 | ||
cff23cec | 391 | if (mwifiex_is_bss_wapi(priv, bss_desc)) { |
5e6e3a92 | 392 | dev_dbg(adapter->dev, "info: return success for WAPI AP\n"); |
7c6fa2a8 | 393 | return 0; |
5e6e3a92 BZ |
394 | } |
395 | ||
396 | if (bss_desc->bss_mode == mode) { | |
cff23cec | 397 | if (mwifiex_is_bss_no_sec(priv, bss_desc)) { |
5e6e3a92 | 398 | /* No security */ |
7c6fa2a8 | 399 | return 0; |
cff23cec | 400 | } else if (mwifiex_is_bss_static_wep(priv, bss_desc)) { |
5e6e3a92 BZ |
401 | /* Static WEP enabled */ |
402 | dev_dbg(adapter->dev, "info: Disable 11n in WEP mode.\n"); | |
403 | bss_desc->disable_11n = true; | |
7c6fa2a8 | 404 | return 0; |
cff23cec | 405 | } else if (mwifiex_is_bss_wpa(priv, bss_desc)) { |
5e6e3a92 | 406 | /* WPA enabled */ |
cff23cec YAP |
407 | if (((priv->adapter->config_bands & BAND_GN || |
408 | priv->adapter->config_bands & BAND_AN) && | |
409 | bss_desc->bcn_ht_cap) && | |
410 | !mwifiex_is_wpa_oui_present(bss_desc, | |
411 | CIPHER_SUITE_CCMP)) { | |
412 | ||
413 | if (mwifiex_is_wpa_oui_present | |
414 | (bss_desc, CIPHER_SUITE_TKIP)) { | |
5e6e3a92 BZ |
415 | dev_dbg(adapter->dev, |
416 | "info: Disable 11n if AES " | |
417 | "is not supported by AP\n"); | |
418 | bss_desc->disable_11n = true; | |
419 | } else { | |
420 | return -1; | |
421 | } | |
422 | } | |
7c6fa2a8 | 423 | return 0; |
cff23cec | 424 | } else if (mwifiex_is_bss_wpa2(priv, bss_desc)) { |
5e6e3a92 | 425 | /* WPA2 enabled */ |
cff23cec YAP |
426 | if (((priv->adapter->config_bands & BAND_GN || |
427 | priv->adapter->config_bands & BAND_AN) && | |
428 | bss_desc->bcn_ht_cap) && | |
429 | !mwifiex_is_rsn_oui_present(bss_desc, | |
430 | CIPHER_SUITE_CCMP)) { | |
431 | ||
432 | if (mwifiex_is_rsn_oui_present | |
433 | (bss_desc, CIPHER_SUITE_TKIP)) { | |
5e6e3a92 BZ |
434 | dev_dbg(adapter->dev, |
435 | "info: Disable 11n if AES " | |
436 | "is not supported by AP\n"); | |
437 | bss_desc->disable_11n = true; | |
438 | } else { | |
439 | return -1; | |
440 | } | |
441 | } | |
7c6fa2a8 | 442 | return 0; |
cff23cec | 443 | } else if (mwifiex_is_bss_adhoc_aes(priv, bss_desc)) { |
5e6e3a92 | 444 | /* Ad-hoc AES enabled */ |
7c6fa2a8 | 445 | return 0; |
cff23cec | 446 | } else if (mwifiex_is_bss_dynamic_wep(priv, bss_desc)) { |
5e6e3a92 | 447 | /* Dynamic WEP enabled */ |
7c6fa2a8 | 448 | return 0; |
5e6e3a92 BZ |
449 | } |
450 | ||
451 | /* Security doesn't match */ | |
cff23cec YAP |
452 | dev_dbg(adapter->dev, |
453 | "info: %s: failed: wpa_ie=%#x wpa2_ie=%#x WEP=%s " | |
454 | "WPA=%s WPA2=%s EncMode=%#x privacy=%#x\n", __func__, | |
455 | (bss_desc->bcn_wpa_ie) ? | |
456 | (*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id : 0, | |
457 | (bss_desc->bcn_rsn_ie) ? | |
458 | (*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id : 0, | |
459 | (priv->sec_info.wep_enabled) ? "e" : "d", | |
460 | (priv->sec_info.wpa_enabled) ? "e" : "d", | |
461 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
462 | priv->sec_info.encryption_mode, bss_desc->privacy); | |
5e6e3a92 BZ |
463 | return -1; |
464 | } | |
465 | ||
466 | /* Mode doesn't match */ | |
467 | return -1; | |
468 | } | |
469 | ||
5e6e3a92 BZ |
470 | /* |
471 | * This function creates a channel list for the driver to scan, based | |
472 | * on region/band information. | |
473 | * | |
474 | * This routine is used for any scan that is not provided with a | |
475 | * specific channel list to scan. | |
476 | */ | |
658f37b7 | 477 | static int |
5e6e3a92 | 478 | mwifiex_scan_create_channel_list(struct mwifiex_private *priv, |
cff23cec YAP |
479 | const struct mwifiex_user_scan_cfg |
480 | *user_scan_in, | |
481 | struct mwifiex_chan_scan_param_set | |
482 | *scan_chan_list, | |
483 | u8 filtered_scan) | |
5e6e3a92 BZ |
484 | { |
485 | enum ieee80211_band band; | |
486 | struct ieee80211_supported_band *sband; | |
487 | struct ieee80211_channel *ch; | |
488 | struct mwifiex_adapter *adapter = priv->adapter; | |
489 | int chan_idx = 0, i; | |
5e6e3a92 BZ |
490 | |
491 | for (band = 0; (band < IEEE80211_NUM_BANDS) ; band++) { | |
492 | ||
493 | if (!priv->wdev->wiphy->bands[band]) | |
494 | continue; | |
495 | ||
496 | sband = priv->wdev->wiphy->bands[band]; | |
497 | ||
d06b7b9e | 498 | for (i = 0; (i < sband->n_channels) ; i++) { |
5e6e3a92 BZ |
499 | ch = &sband->channels[i]; |
500 | if (ch->flags & IEEE80211_CHAN_DISABLED) | |
501 | continue; | |
502 | scan_chan_list[chan_idx].radio_type = band; | |
186630c2 | 503 | |
5e6e3a92 | 504 | if (user_scan_in && |
cff23cec | 505 | user_scan_in->chan_list[0].scan_time) |
5e6e3a92 BZ |
506 | scan_chan_list[chan_idx].max_scan_time = |
507 | cpu_to_le16((u16) user_scan_in-> | |
508 | chan_list[0].scan_time); | |
186630c2 | 509 | else if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
5e6e3a92 BZ |
510 | scan_chan_list[chan_idx].max_scan_time = |
511 | cpu_to_le16(adapter->passive_scan_time); | |
512 | else | |
513 | scan_chan_list[chan_idx].max_scan_time = | |
514 | cpu_to_le16(adapter->active_scan_time); | |
186630c2 AK |
515 | |
516 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
5e6e3a92 BZ |
517 | scan_chan_list[chan_idx].chan_scan_mode_bitmap |
518 | |= MWIFIEX_PASSIVE_SCAN; | |
519 | else | |
520 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
521 | &= ~MWIFIEX_PASSIVE_SCAN; | |
522 | scan_chan_list[chan_idx].chan_number = | |
523 | (u32) ch->hw_value; | |
524 | if (filtered_scan) { | |
525 | scan_chan_list[chan_idx].max_scan_time = | |
526 | cpu_to_le16(adapter->specific_scan_time); | |
527 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
528 | |= MWIFIEX_DISABLE_CHAN_FILT; | |
529 | } | |
d06b7b9e | 530 | chan_idx++; |
5e6e3a92 BZ |
531 | } |
532 | ||
533 | } | |
658f37b7 | 534 | return chan_idx; |
5e6e3a92 BZ |
535 | } |
536 | ||
537 | /* | |
538 | * This function constructs and sends multiple scan config commands to | |
539 | * the firmware. | |
540 | * | |
541 | * Previous routines in the code flow have created a scan command configuration | |
542 | * with any requested TLVs. This function splits the channel TLV into maximum | |
543 | * channels supported per scan lists and sends the portion of the channel TLV, | |
544 | * along with the other TLVs, to the firmware. | |
545 | */ | |
546 | static int | |
600f5d90 | 547 | mwifiex_scan_channel_list(struct mwifiex_private *priv, |
5e6e3a92 BZ |
548 | u32 max_chan_per_scan, u8 filtered_scan, |
549 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
550 | struct mwifiex_ie_types_chan_list_param_set | |
551 | *chan_tlv_out, | |
552 | struct mwifiex_chan_scan_param_set *scan_chan_list) | |
553 | { | |
554 | int ret = 0; | |
555 | struct mwifiex_chan_scan_param_set *tmp_chan_list; | |
556 | struct mwifiex_chan_scan_param_set *start_chan; | |
557 | ||
558 | u32 tlv_idx; | |
559 | u32 total_scan_time; | |
560 | u32 done_early; | |
561 | ||
562 | if (!scan_cfg_out || !chan_tlv_out || !scan_chan_list) { | |
563 | dev_dbg(priv->adapter->dev, | |
564 | "info: Scan: Null detect: %p, %p, %p\n", | |
565 | scan_cfg_out, chan_tlv_out, scan_chan_list); | |
566 | return -1; | |
567 | } | |
568 | ||
569 | chan_tlv_out->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); | |
570 | ||
571 | /* Set the temp channel struct pointer to the start of the desired | |
572 | list */ | |
573 | tmp_chan_list = scan_chan_list; | |
574 | ||
575 | /* Loop through the desired channel list, sending a new firmware scan | |
576 | commands for each max_chan_per_scan channels (or for 1,6,11 | |
577 | individually if configured accordingly) */ | |
578 | while (tmp_chan_list->chan_number) { | |
579 | ||
580 | tlv_idx = 0; | |
581 | total_scan_time = 0; | |
582 | chan_tlv_out->header.len = 0; | |
583 | start_chan = tmp_chan_list; | |
584 | done_early = false; | |
585 | ||
586 | /* | |
587 | * Construct the Channel TLV for the scan command. Continue to | |
588 | * insert channel TLVs until: | |
589 | * - the tlv_idx hits the maximum configured per scan command | |
590 | * - the next channel to insert is 0 (end of desired channel | |
591 | * list) | |
592 | * - done_early is set (controlling individual scanning of | |
593 | * 1,6,11) | |
594 | */ | |
cff23cec YAP |
595 | while (tlv_idx < max_chan_per_scan && |
596 | tmp_chan_list->chan_number && !done_early) { | |
5e6e3a92 BZ |
597 | |
598 | dev_dbg(priv->adapter->dev, | |
599 | "info: Scan: Chan(%3d), Radio(%d)," | |
600 | " Mode(%d, %d), Dur(%d)\n", | |
cff23cec YAP |
601 | tmp_chan_list->chan_number, |
602 | tmp_chan_list->radio_type, | |
603 | tmp_chan_list->chan_scan_mode_bitmap | |
604 | & MWIFIEX_PASSIVE_SCAN, | |
605 | (tmp_chan_list->chan_scan_mode_bitmap | |
606 | & MWIFIEX_DISABLE_CHAN_FILT) >> 1, | |
607 | le16_to_cpu(tmp_chan_list->max_scan_time)); | |
5e6e3a92 BZ |
608 | |
609 | /* Copy the current channel TLV to the command being | |
610 | prepared */ | |
611 | memcpy(chan_tlv_out->chan_scan_param + tlv_idx, | |
612 | tmp_chan_list, | |
613 | sizeof(chan_tlv_out->chan_scan_param)); | |
614 | ||
615 | /* Increment the TLV header length by the size | |
616 | appended */ | |
617 | chan_tlv_out->header.len = | |
618 | cpu_to_le16(le16_to_cpu(chan_tlv_out->header.len) + | |
619 | (sizeof(chan_tlv_out->chan_scan_param))); | |
620 | ||
621 | /* | |
622 | * The tlv buffer length is set to the number of bytes | |
623 | * of the between the channel tlv pointer and the start | |
624 | * of the tlv buffer. This compensates for any TLVs | |
625 | * that were appended before the channel list. | |
626 | */ | |
627 | scan_cfg_out->tlv_buf_len = (u32) ((u8 *) chan_tlv_out - | |
628 | scan_cfg_out->tlv_buf); | |
629 | ||
630 | /* Add the size of the channel tlv header and the data | |
631 | length */ | |
632 | scan_cfg_out->tlv_buf_len += | |
633 | (sizeof(chan_tlv_out->header) | |
634 | + le16_to_cpu(chan_tlv_out->header.len)); | |
635 | ||
636 | /* Increment the index to the channel tlv we are | |
637 | constructing */ | |
638 | tlv_idx++; | |
639 | ||
640 | /* Count the total scan time per command */ | |
641 | total_scan_time += | |
642 | le16_to_cpu(tmp_chan_list->max_scan_time); | |
643 | ||
644 | done_early = false; | |
645 | ||
646 | /* Stop the loop if the *current* channel is in the | |
647 | 1,6,11 set and we are not filtering on a BSSID | |
648 | or SSID. */ | |
cff23cec YAP |
649 | if (!filtered_scan && |
650 | (tmp_chan_list->chan_number == 1 || | |
651 | tmp_chan_list->chan_number == 6 || | |
652 | tmp_chan_list->chan_number == 11)) | |
5e6e3a92 BZ |
653 | done_early = true; |
654 | ||
655 | /* Increment the tmp pointer to the next channel to | |
656 | be scanned */ | |
657 | tmp_chan_list++; | |
658 | ||
659 | /* Stop the loop if the *next* channel is in the 1,6,11 | |
660 | set. This will cause it to be the only channel | |
661 | scanned on the next interation */ | |
cff23cec YAP |
662 | if (!filtered_scan && |
663 | (tmp_chan_list->chan_number == 1 || | |
664 | tmp_chan_list->chan_number == 6 || | |
665 | tmp_chan_list->chan_number == 11)) | |
5e6e3a92 BZ |
666 | done_early = true; |
667 | } | |
668 | ||
669 | /* The total scan time should be less than scan command timeout | |
670 | value */ | |
671 | if (total_scan_time > MWIFIEX_MAX_TOTAL_SCAN_TIME) { | |
672 | dev_err(priv->adapter->dev, "total scan time %dms" | |
673 | " is over limit (%dms), scan skipped\n", | |
674 | total_scan_time, MWIFIEX_MAX_TOTAL_SCAN_TIME); | |
675 | ret = -1; | |
676 | break; | |
677 | } | |
678 | ||
679 | priv->adapter->scan_channels = start_chan; | |
680 | ||
681 | /* Send the scan command to the firmware with the specified | |
682 | cfg */ | |
600f5d90 AK |
683 | ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11_SCAN, |
684 | HostCmd_ACT_GEN_SET, 0, | |
685 | scan_cfg_out); | |
5e6e3a92 BZ |
686 | if (ret) |
687 | break; | |
688 | } | |
689 | ||
690 | if (ret) | |
691 | return -1; | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
696 | /* | |
697 | * This function constructs a scan command configuration structure to use | |
698 | * in scan commands. | |
699 | * | |
700 | * Application layer or other functions can invoke network scanning | |
701 | * with a scan configuration supplied in a user scan configuration structure. | |
702 | * This structure is used as the basis of one or many scan command configuration | |
703 | * commands that are sent to the command processing module and eventually to the | |
704 | * firmware. | |
705 | * | |
706 | * This function creates a scan command configuration structure based on the | |
707 | * following user supplied parameters (if present): | |
708 | * - SSID filter | |
709 | * - BSSID filter | |
710 | * - Number of Probes to be sent | |
711 | * - Channel list | |
712 | * | |
713 | * If the SSID or BSSID filter is not present, the filter is disabled/cleared. | |
714 | * If the number of probes is not set, adapter default setting is used. | |
715 | */ | |
716 | static void | |
cff23cec YAP |
717 | mwifiex_config_scan(struct mwifiex_private *priv, |
718 | const struct mwifiex_user_scan_cfg *user_scan_in, | |
719 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
720 | struct mwifiex_ie_types_chan_list_param_set **chan_list_out, | |
721 | struct mwifiex_chan_scan_param_set *scan_chan_list, | |
722 | u8 *max_chan_per_scan, u8 *filtered_scan, | |
723 | u8 *scan_current_only) | |
5e6e3a92 BZ |
724 | { |
725 | struct mwifiex_adapter *adapter = priv->adapter; | |
726 | struct mwifiex_ie_types_num_probes *num_probes_tlv; | |
727 | struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv; | |
728 | struct mwifiex_ie_types_rates_param_set *rates_tlv; | |
5e6e3a92 BZ |
729 | u8 *tlv_pos; |
730 | u32 num_probes; | |
731 | u32 ssid_len; | |
732 | u32 chan_idx; | |
658f37b7 | 733 | u32 chan_num; |
5e6e3a92 BZ |
734 | u32 scan_type; |
735 | u16 scan_dur; | |
736 | u8 channel; | |
737 | u8 radio_type; | |
be0b281e | 738 | int i; |
5e6e3a92 BZ |
739 | u8 ssid_filter; |
740 | u8 rates[MWIFIEX_SUPPORTED_RATES]; | |
741 | u32 rates_size; | |
742 | struct mwifiex_ie_types_htcap *ht_cap; | |
743 | ||
744 | /* The tlv_buf_len is calculated for each scan command. The TLVs added | |
745 | in this routine will be preserved since the routine that sends the | |
746 | command will append channelTLVs at *chan_list_out. The difference | |
747 | between the *chan_list_out and the tlv_buf start will be used to | |
748 | calculate the size of anything we add in this routine. */ | |
749 | scan_cfg_out->tlv_buf_len = 0; | |
750 | ||
751 | /* Running tlv pointer. Assigned to chan_list_out at end of function | |
752 | so later routines know where channels can be added to the command | |
753 | buf */ | |
754 | tlv_pos = scan_cfg_out->tlv_buf; | |
755 | ||
756 | /* Initialize the scan as un-filtered; the flag is later set to TRUE | |
757 | below if a SSID or BSSID filter is sent in the command */ | |
758 | *filtered_scan = false; | |
759 | ||
760 | /* Initialize the scan as not being only on the current channel. If | |
761 | the channel list is customized, only contains one channel, and is | |
762 | the active channel, this is set true and data flow is not halted. */ | |
763 | *scan_current_only = false; | |
764 | ||
765 | if (user_scan_in) { | |
766 | ||
767 | /* Default the ssid_filter flag to TRUE, set false under | |
768 | certain wildcard conditions and qualified by the existence | |
769 | of an SSID list before marking the scan as filtered */ | |
770 | ssid_filter = true; | |
771 | ||
772 | /* Set the BSS type scan filter, use Adapter setting if | |
773 | unset */ | |
774 | scan_cfg_out->bss_mode = | |
775 | (user_scan_in->bss_mode ? (u8) user_scan_in-> | |
776 | bss_mode : (u8) adapter->scan_mode); | |
777 | ||
778 | /* Set the number of probes to send, use Adapter setting | |
779 | if unset */ | |
780 | num_probes = | |
781 | (user_scan_in->num_probes ? user_scan_in-> | |
782 | num_probes : adapter->scan_probes); | |
783 | ||
784 | /* | |
785 | * Set the BSSID filter to the incoming configuration, | |
786 | * if non-zero. If not set, it will remain disabled | |
787 | * (all zeros). | |
788 | */ | |
789 | memcpy(scan_cfg_out->specific_bssid, | |
790 | user_scan_in->specific_bssid, | |
791 | sizeof(scan_cfg_out->specific_bssid)); | |
792 | ||
be0b281e AK |
793 | for (i = 0; i < user_scan_in->num_ssids; i++) { |
794 | ssid_len = user_scan_in->ssid_list[i].ssid_len; | |
5e6e3a92 BZ |
795 | |
796 | wildcard_ssid_tlv = | |
797 | (struct mwifiex_ie_types_wildcard_ssid_params *) | |
798 | tlv_pos; | |
799 | wildcard_ssid_tlv->header.type = | |
800 | cpu_to_le16(TLV_TYPE_WILDCARDSSID); | |
801 | wildcard_ssid_tlv->header.len = cpu_to_le16( | |
802 | (u16) (ssid_len + sizeof(wildcard_ssid_tlv-> | |
803 | max_ssid_length))); | |
fada1058 | 804 | |
be0b281e AK |
805 | /* |
806 | * max_ssid_length = 0 tells firmware to perform | |
807 | * specific scan for the SSID filled, whereas | |
808 | * max_ssid_length = IEEE80211_MAX_SSID_LEN is for | |
809 | * wildcard scan. | |
810 | */ | |
811 | if (ssid_len) | |
812 | wildcard_ssid_tlv->max_ssid_length = 0; | |
813 | else | |
814 | wildcard_ssid_tlv->max_ssid_length = | |
815 | IEEE80211_MAX_SSID_LEN; | |
5e6e3a92 BZ |
816 | |
817 | memcpy(wildcard_ssid_tlv->ssid, | |
be0b281e | 818 | user_scan_in->ssid_list[i].ssid, ssid_len); |
5e6e3a92 BZ |
819 | |
820 | tlv_pos += (sizeof(wildcard_ssid_tlv->header) | |
821 | + le16_to_cpu(wildcard_ssid_tlv->header.len)); | |
822 | ||
be0b281e AK |
823 | dev_dbg(adapter->dev, "info: scan: ssid[%d]: %s, %d\n", |
824 | i, wildcard_ssid_tlv->ssid, | |
5e6e3a92 BZ |
825 | wildcard_ssid_tlv->max_ssid_length); |
826 | ||
827 | /* Empty wildcard ssid with a maxlen will match many or | |
828 | potentially all SSIDs (maxlen == 32), therefore do | |
829 | not treat the scan as | |
830 | filtered. */ | |
831 | if (!ssid_len && wildcard_ssid_tlv->max_ssid_length) | |
832 | ssid_filter = false; | |
5e6e3a92 BZ |
833 | } |
834 | ||
835 | /* | |
836 | * The default number of channels sent in the command is low to | |
837 | * ensure the response buffer from the firmware does not | |
838 | * truncate scan results. That is not an issue with an SSID | |
839 | * or BSSID filter applied to the scan results in the firmware. | |
840 | */ | |
cff23cec | 841 | if ((i && ssid_filter) || |
84f6a95a | 842 | !is_zero_ether_addr(scan_cfg_out->specific_bssid)) |
5e6e3a92 BZ |
843 | *filtered_scan = true; |
844 | } else { | |
845 | scan_cfg_out->bss_mode = (u8) adapter->scan_mode; | |
846 | num_probes = adapter->scan_probes; | |
847 | } | |
848 | ||
849 | /* | |
850 | * If a specific BSSID or SSID is used, the number of channels in the | |
851 | * scan command will be increased to the absolute maximum. | |
852 | */ | |
853 | if (*filtered_scan) | |
854 | *max_chan_per_scan = MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN; | |
855 | else | |
658f37b7 | 856 | *max_chan_per_scan = MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD; |
5e6e3a92 BZ |
857 | |
858 | /* If the input config or adapter has the number of Probes set, | |
859 | add tlv */ | |
860 | if (num_probes) { | |
861 | ||
862 | dev_dbg(adapter->dev, "info: scan: num_probes = %d\n", | |
cff23cec | 863 | num_probes); |
5e6e3a92 BZ |
864 | |
865 | num_probes_tlv = (struct mwifiex_ie_types_num_probes *) tlv_pos; | |
866 | num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); | |
867 | num_probes_tlv->header.len = | |
868 | cpu_to_le16(sizeof(num_probes_tlv->num_probes)); | |
869 | num_probes_tlv->num_probes = cpu_to_le16((u16) num_probes); | |
870 | ||
871 | tlv_pos += sizeof(num_probes_tlv->header) + | |
872 | le16_to_cpu(num_probes_tlv->header.len); | |
873 | ||
874 | } | |
875 | ||
876 | /* Append rates tlv */ | |
877 | memset(rates, 0, sizeof(rates)); | |
878 | ||
879 | rates_size = mwifiex_get_supported_rates(priv, rates); | |
880 | ||
881 | rates_tlv = (struct mwifiex_ie_types_rates_param_set *) tlv_pos; | |
882 | rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES); | |
883 | rates_tlv->header.len = cpu_to_le16((u16) rates_size); | |
884 | memcpy(rates_tlv->rates, rates, rates_size); | |
885 | tlv_pos += sizeof(rates_tlv->header) + rates_size; | |
886 | ||
887 | dev_dbg(adapter->dev, "info: SCAN_CMD: Rates size = %d\n", rates_size); | |
888 | ||
cff23cec YAP |
889 | if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) && |
890 | (priv->adapter->config_bands & BAND_GN || | |
891 | priv->adapter->config_bands & BAND_AN)) { | |
5e6e3a92 BZ |
892 | ht_cap = (struct mwifiex_ie_types_htcap *) tlv_pos; |
893 | memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap)); | |
894 | ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); | |
895 | ht_cap->header.len = | |
896 | cpu_to_le16(sizeof(struct ieee80211_ht_cap)); | |
a46b7b5c AK |
897 | radio_type = |
898 | mwifiex_band_to_radio_type(priv->adapter->config_bands); | |
899 | mwifiex_fill_cap_info(priv, radio_type, ht_cap); | |
5e6e3a92 BZ |
900 | tlv_pos += sizeof(struct mwifiex_ie_types_htcap); |
901 | } | |
902 | ||
903 | /* Append vendor specific IE TLV */ | |
904 | mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_SCAN, &tlv_pos); | |
905 | ||
906 | /* | |
907 | * Set the output for the channel TLV to the address in the tlv buffer | |
908 | * past any TLVs that were added in this function (SSID, num_probes). | |
909 | * Channel TLVs will be added past this for each scan command, | |
910 | * preserving the TLVs that were previously added. | |
911 | */ | |
912 | *chan_list_out = | |
913 | (struct mwifiex_ie_types_chan_list_param_set *) tlv_pos; | |
914 | ||
915 | if (user_scan_in && user_scan_in->chan_list[0].chan_number) { | |
916 | ||
917 | dev_dbg(adapter->dev, "info: Scan: Using supplied channel list\n"); | |
918 | ||
919 | for (chan_idx = 0; | |
cff23cec YAP |
920 | chan_idx < MWIFIEX_USER_SCAN_CHAN_MAX && |
921 | user_scan_in->chan_list[chan_idx].chan_number; | |
5e6e3a92 BZ |
922 | chan_idx++) { |
923 | ||
924 | channel = user_scan_in->chan_list[chan_idx].chan_number; | |
925 | (scan_chan_list + chan_idx)->chan_number = channel; | |
926 | ||
927 | radio_type = | |
928 | user_scan_in->chan_list[chan_idx].radio_type; | |
929 | (scan_chan_list + chan_idx)->radio_type = radio_type; | |
930 | ||
931 | scan_type = user_scan_in->chan_list[chan_idx].scan_type; | |
932 | ||
933 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
934 | (scan_chan_list + | |
935 | chan_idx)->chan_scan_mode_bitmap | |
936 | |= MWIFIEX_PASSIVE_SCAN; | |
937 | else | |
938 | (scan_chan_list + | |
939 | chan_idx)->chan_scan_mode_bitmap | |
940 | &= ~MWIFIEX_PASSIVE_SCAN; | |
941 | ||
942 | if (user_scan_in->chan_list[chan_idx].scan_time) { | |
943 | scan_dur = (u16) user_scan_in-> | |
944 | chan_list[chan_idx].scan_time; | |
945 | } else { | |
946 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
947 | scan_dur = adapter->passive_scan_time; | |
948 | else if (*filtered_scan) | |
949 | scan_dur = adapter->specific_scan_time; | |
950 | else | |
951 | scan_dur = adapter->active_scan_time; | |
952 | } | |
953 | ||
954 | (scan_chan_list + chan_idx)->min_scan_time = | |
955 | cpu_to_le16(scan_dur); | |
956 | (scan_chan_list + chan_idx)->max_scan_time = | |
957 | cpu_to_le16(scan_dur); | |
958 | } | |
959 | ||
960 | /* Check if we are only scanning the current channel */ | |
cff23cec YAP |
961 | if ((chan_idx == 1) && |
962 | (user_scan_in->chan_list[0].chan_number == | |
963 | priv->curr_bss_params.bss_descriptor.channel)) { | |
5e6e3a92 BZ |
964 | *scan_current_only = true; |
965 | dev_dbg(adapter->dev, | |
966 | "info: Scan: Scanning current channel only\n"); | |
967 | } | |
658f37b7 | 968 | chan_num = chan_idx; |
5e6e3a92 BZ |
969 | } else { |
970 | dev_dbg(adapter->dev, | |
cff23cec | 971 | "info: Scan: Creating full region channel list\n"); |
658f37b7 AK |
972 | chan_num = mwifiex_scan_create_channel_list(priv, user_scan_in, |
973 | scan_chan_list, | |
974 | *filtered_scan); | |
975 | } | |
976 | ||
977 | /* | |
978 | * In associated state we will reduce the number of channels scanned per | |
979 | * scan command to avoid any traffic delay/loss. This number is decided | |
980 | * based on total number of channels to be scanned due to constraints | |
981 | * of command buffers. | |
982 | */ | |
983 | if (priv->media_connected) { | |
984 | if (chan_num < MWIFIEX_LIMIT_1_CHANNEL_PER_SCAN_CMD) | |
985 | *max_chan_per_scan = 1; | |
986 | else if (chan_num < MWIFIEX_LIMIT_2_CHANNELS_PER_SCAN_CMD) | |
987 | *max_chan_per_scan = 2; | |
988 | else if (chan_num < MWIFIEX_LIMIT_3_CHANNELS_PER_SCAN_CMD) | |
989 | *max_chan_per_scan = 3; | |
b7525dbd AK |
990 | else |
991 | *max_chan_per_scan = 4; | |
5e6e3a92 BZ |
992 | } |
993 | } | |
994 | ||
995 | /* | |
996 | * This function inspects the scan response buffer for pointers to | |
997 | * expected TLVs. | |
998 | * | |
999 | * TLVs can be included at the end of the scan response BSS information. | |
1000 | * | |
1001 | * Data in the buffer is parsed pointers to TLVs that can potentially | |
1002 | * be passed back in the response. | |
1003 | */ | |
1004 | static void | |
1005 | mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter *adapter, | |
1006 | struct mwifiex_ie_types_data *tlv, | |
1007 | u32 tlv_buf_size, u32 req_tlv_type, | |
1008 | struct mwifiex_ie_types_data **tlv_data) | |
1009 | { | |
1010 | struct mwifiex_ie_types_data *current_tlv; | |
1011 | u32 tlv_buf_left; | |
1012 | u32 tlv_type; | |
1013 | u32 tlv_len; | |
1014 | ||
1015 | current_tlv = tlv; | |
1016 | tlv_buf_left = tlv_buf_size; | |
1017 | *tlv_data = NULL; | |
1018 | ||
1019 | dev_dbg(adapter->dev, "info: SCAN_RESP: tlv_buf_size = %d\n", | |
cff23cec | 1020 | tlv_buf_size); |
5e6e3a92 BZ |
1021 | |
1022 | while (tlv_buf_left >= sizeof(struct mwifiex_ie_types_header)) { | |
1023 | ||
1024 | tlv_type = le16_to_cpu(current_tlv->header.type); | |
1025 | tlv_len = le16_to_cpu(current_tlv->header.len); | |
1026 | ||
1027 | if (sizeof(tlv->header) + tlv_len > tlv_buf_left) { | |
1028 | dev_err(adapter->dev, "SCAN_RESP: TLV buffer corrupt\n"); | |
1029 | break; | |
1030 | } | |
1031 | ||
1032 | if (req_tlv_type == tlv_type) { | |
1033 | switch (tlv_type) { | |
1034 | case TLV_TYPE_TSFTIMESTAMP: | |
1035 | dev_dbg(adapter->dev, "info: SCAN_RESP: TSF " | |
1036 | "timestamp TLV, len = %d\n", tlv_len); | |
2c208890 | 1037 | *tlv_data = current_tlv; |
5e6e3a92 BZ |
1038 | break; |
1039 | case TLV_TYPE_CHANNELBANDLIST: | |
1040 | dev_dbg(adapter->dev, "info: SCAN_RESP: channel" | |
1041 | " band list TLV, len = %d\n", tlv_len); | |
2c208890 | 1042 | *tlv_data = current_tlv; |
5e6e3a92 BZ |
1043 | break; |
1044 | default: | |
1045 | dev_err(adapter->dev, | |
1046 | "SCAN_RESP: unhandled TLV = %d\n", | |
1047 | tlv_type); | |
1048 | /* Give up, this seems corrupted */ | |
1049 | return; | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | if (*tlv_data) | |
1054 | break; | |
1055 | ||
1056 | ||
1057 | tlv_buf_left -= (sizeof(tlv->header) + tlv_len); | |
1058 | current_tlv = | |
1059 | (struct mwifiex_ie_types_data *) (current_tlv->data + | |
1060 | tlv_len); | |
1061 | ||
1062 | } /* while */ | |
1063 | } | |
1064 | ||
1065 | /* | |
7c6fa2a8 AK |
1066 | * This function parses provided beacon buffer and updates |
1067 | * respective fields in bss descriptor structure. | |
5e6e3a92 | 1068 | */ |
9558a407 AK |
1069 | int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter, |
1070 | struct mwifiex_bssdescriptor *bss_entry) | |
5e6e3a92 BZ |
1071 | { |
1072 | int ret = 0; | |
1073 | u8 element_id; | |
1074 | struct ieee_types_fh_param_set *fh_param_set; | |
1075 | struct ieee_types_ds_param_set *ds_param_set; | |
1076 | struct ieee_types_cf_param_set *cf_param_set; | |
1077 | struct ieee_types_ibss_param_set *ibss_param_set; | |
5e6e3a92 BZ |
1078 | u8 *current_ptr; |
1079 | u8 *rate; | |
1080 | u8 element_len; | |
1081 | u16 total_ie_len; | |
1082 | u8 bytes_to_copy; | |
1083 | u8 rate_size; | |
5e6e3a92 | 1084 | u8 found_data_rate_ie; |
7c6fa2a8 | 1085 | u32 bytes_left; |
5e6e3a92 BZ |
1086 | struct ieee_types_vendor_specific *vendor_ie; |
1087 | const u8 wpa_oui[4] = { 0x00, 0x50, 0xf2, 0x01 }; | |
1088 | const u8 wmm_oui[4] = { 0x00, 0x50, 0xf2, 0x02 }; | |
1089 | ||
1090 | found_data_rate_ie = false; | |
1091 | rate_size = 0; | |
9558a407 AK |
1092 | current_ptr = bss_entry->beacon_buf; |
1093 | bytes_left = bss_entry->beacon_buf_size; | |
5e6e3a92 BZ |
1094 | |
1095 | /* Process variable IE */ | |
7c6fa2a8 | 1096 | while (bytes_left >= 2) { |
5e6e3a92 BZ |
1097 | element_id = *current_ptr; |
1098 | element_len = *(current_ptr + 1); | |
1099 | total_ie_len = element_len + sizeof(struct ieee_types_header); | |
1100 | ||
7c6fa2a8 | 1101 | if (bytes_left < total_ie_len) { |
5e6e3a92 BZ |
1102 | dev_err(adapter->dev, "err: InterpretIE: in processing" |
1103 | " IE, bytes left < IE length\n"); | |
7c6fa2a8 | 1104 | return -1; |
5e6e3a92 BZ |
1105 | } |
1106 | switch (element_id) { | |
1107 | case WLAN_EID_SSID: | |
1108 | bss_entry->ssid.ssid_len = element_len; | |
1109 | memcpy(bss_entry->ssid.ssid, (current_ptr + 2), | |
1110 | element_len); | |
cff23cec YAP |
1111 | dev_dbg(adapter->dev, |
1112 | "info: InterpretIE: ssid: %-32s\n", | |
1113 | bss_entry->ssid.ssid); | |
5e6e3a92 BZ |
1114 | break; |
1115 | ||
1116 | case WLAN_EID_SUPP_RATES: | |
1117 | memcpy(bss_entry->data_rates, current_ptr + 2, | |
1118 | element_len); | |
1119 | memcpy(bss_entry->supported_rates, current_ptr + 2, | |
1120 | element_len); | |
1121 | rate_size = element_len; | |
1122 | found_data_rate_ie = true; | |
1123 | break; | |
1124 | ||
1125 | case WLAN_EID_FH_PARAMS: | |
1126 | fh_param_set = | |
1127 | (struct ieee_types_fh_param_set *) current_ptr; | |
1128 | memcpy(&bss_entry->phy_param_set.fh_param_set, | |
1129 | fh_param_set, | |
1130 | sizeof(struct ieee_types_fh_param_set)); | |
1131 | break; | |
1132 | ||
1133 | case WLAN_EID_DS_PARAMS: | |
1134 | ds_param_set = | |
1135 | (struct ieee_types_ds_param_set *) current_ptr; | |
1136 | ||
1137 | bss_entry->channel = ds_param_set->current_chan; | |
1138 | ||
1139 | memcpy(&bss_entry->phy_param_set.ds_param_set, | |
1140 | ds_param_set, | |
1141 | sizeof(struct ieee_types_ds_param_set)); | |
1142 | break; | |
1143 | ||
1144 | case WLAN_EID_CF_PARAMS: | |
1145 | cf_param_set = | |
1146 | (struct ieee_types_cf_param_set *) current_ptr; | |
1147 | memcpy(&bss_entry->ss_param_set.cf_param_set, | |
1148 | cf_param_set, | |
1149 | sizeof(struct ieee_types_cf_param_set)); | |
1150 | break; | |
1151 | ||
1152 | case WLAN_EID_IBSS_PARAMS: | |
1153 | ibss_param_set = | |
1154 | (struct ieee_types_ibss_param_set *) | |
1155 | current_ptr; | |
1156 | memcpy(&bss_entry->ss_param_set.ibss_param_set, | |
1157 | ibss_param_set, | |
1158 | sizeof(struct ieee_types_ibss_param_set)); | |
1159 | break; | |
1160 | ||
1161 | case WLAN_EID_ERP_INFO: | |
1162 | bss_entry->erp_flags = *(current_ptr + 2); | |
1163 | break; | |
1164 | ||
1165 | case WLAN_EID_EXT_SUPP_RATES: | |
1166 | /* | |
1167 | * Only process extended supported rate | |
1168 | * if data rate is already found. | |
1169 | * Data rate IE should come before | |
1170 | * extended supported rate IE | |
1171 | */ | |
1172 | if (found_data_rate_ie) { | |
1173 | if ((element_len + rate_size) > | |
1174 | MWIFIEX_SUPPORTED_RATES) | |
1175 | bytes_to_copy = | |
1176 | (MWIFIEX_SUPPORTED_RATES - | |
1177 | rate_size); | |
1178 | else | |
1179 | bytes_to_copy = element_len; | |
1180 | ||
1181 | rate = (u8 *) bss_entry->data_rates; | |
1182 | rate += rate_size; | |
1183 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1184 | ||
1185 | rate = (u8 *) bss_entry->supported_rates; | |
1186 | rate += rate_size; | |
1187 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1188 | } | |
1189 | break; | |
1190 | ||
1191 | case WLAN_EID_VENDOR_SPECIFIC: | |
1192 | vendor_ie = (struct ieee_types_vendor_specific *) | |
1193 | current_ptr; | |
1194 | ||
1195 | if (!memcmp | |
1196 | (vendor_ie->vend_hdr.oui, wpa_oui, | |
1197 | sizeof(wpa_oui))) { | |
1198 | bss_entry->bcn_wpa_ie = | |
1199 | (struct ieee_types_vendor_specific *) | |
1200 | current_ptr; | |
cff23cec YAP |
1201 | bss_entry->wpa_offset = (u16) |
1202 | (current_ptr - bss_entry->beacon_buf); | |
5e6e3a92 BZ |
1203 | } else if (!memcmp(vendor_ie->vend_hdr.oui, wmm_oui, |
1204 | sizeof(wmm_oui))) { | |
1205 | if (total_ie_len == | |
cff23cec YAP |
1206 | sizeof(struct ieee_types_wmm_parameter) || |
1207 | total_ie_len == | |
5e6e3a92 BZ |
1208 | sizeof(struct ieee_types_wmm_info)) |
1209 | /* | |
1210 | * Only accept and copy the WMM IE if | |
1211 | * it matches the size expected for the | |
1212 | * WMM Info IE or the WMM Parameter IE. | |
1213 | */ | |
1214 | memcpy((u8 *) &bss_entry->wmm_ie, | |
1215 | current_ptr, total_ie_len); | |
1216 | } | |
1217 | break; | |
1218 | case WLAN_EID_RSN: | |
1219 | bss_entry->bcn_rsn_ie = | |
1220 | (struct ieee_types_generic *) current_ptr; | |
1221 | bss_entry->rsn_offset = (u16) (current_ptr - | |
1222 | bss_entry->beacon_buf); | |
1223 | break; | |
1224 | case WLAN_EID_BSS_AC_ACCESS_DELAY: | |
1225 | bss_entry->bcn_wapi_ie = | |
1226 | (struct ieee_types_generic *) current_ptr; | |
1227 | bss_entry->wapi_offset = (u16) (current_ptr - | |
1228 | bss_entry->beacon_buf); | |
1229 | break; | |
1230 | case WLAN_EID_HT_CAPABILITY: | |
1231 | bss_entry->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
1232 | (current_ptr + | |
1233 | sizeof(struct ieee_types_header)); | |
1234 | bss_entry->ht_cap_offset = (u16) (current_ptr + | |
1235 | sizeof(struct ieee_types_header) - | |
1236 | bss_entry->beacon_buf); | |
1237 | break; | |
074d46d1 JB |
1238 | case WLAN_EID_HT_OPERATION: |
1239 | bss_entry->bcn_ht_oper = | |
1240 | (struct ieee80211_ht_operation *)(current_ptr + | |
5e6e3a92 BZ |
1241 | sizeof(struct ieee_types_header)); |
1242 | bss_entry->ht_info_offset = (u16) (current_ptr + | |
1243 | sizeof(struct ieee_types_header) - | |
1244 | bss_entry->beacon_buf); | |
1245 | break; | |
1246 | case WLAN_EID_BSS_COEX_2040: | |
2c208890 JP |
1247 | bss_entry->bcn_bss_co_2040 = current_ptr + |
1248 | sizeof(struct ieee_types_header); | |
5e6e3a92 BZ |
1249 | bss_entry->bss_co_2040_offset = (u16) (current_ptr + |
1250 | sizeof(struct ieee_types_header) - | |
1251 | bss_entry->beacon_buf); | |
1252 | break; | |
1253 | case WLAN_EID_EXT_CAPABILITY: | |
2c208890 JP |
1254 | bss_entry->bcn_ext_cap = current_ptr + |
1255 | sizeof(struct ieee_types_header); | |
5e6e3a92 BZ |
1256 | bss_entry->ext_cap_offset = (u16) (current_ptr + |
1257 | sizeof(struct ieee_types_header) - | |
1258 | bss_entry->beacon_buf); | |
1259 | break; | |
5e6e3a92 BZ |
1260 | default: |
1261 | break; | |
1262 | } | |
1263 | ||
1264 | current_ptr += element_len + 2; | |
1265 | ||
1266 | /* Need to account for IE ID and IE Len */ | |
7c6fa2a8 | 1267 | bytes_left -= (element_len + 2); |
5e6e3a92 | 1268 | |
7c6fa2a8 | 1269 | } /* while (bytes_left > 2) */ |
5e6e3a92 BZ |
1270 | return ret; |
1271 | } | |
1272 | ||
5e6e3a92 BZ |
1273 | /* |
1274 | * This function converts radio type scan parameter to a band configuration | |
1275 | * to be used in join command. | |
1276 | */ | |
1277 | static u8 | |
1278 | mwifiex_radio_type_to_band(u8 radio_type) | |
1279 | { | |
5e6e3a92 BZ |
1280 | switch (radio_type) { |
1281 | case HostCmd_SCAN_RADIO_TYPE_A: | |
636c4598 | 1282 | return BAND_A; |
5e6e3a92 BZ |
1283 | case HostCmd_SCAN_RADIO_TYPE_BG: |
1284 | default: | |
636c4598 | 1285 | return BAND_G; |
5e6e3a92 | 1286 | } |
5e6e3a92 BZ |
1287 | } |
1288 | ||
5e6e3a92 BZ |
1289 | /* |
1290 | * This is an internal function used to start a scan based on an input | |
1291 | * configuration. | |
1292 | * | |
1293 | * This uses the input user scan configuration information when provided in | |
1294 | * order to send the appropriate scan commands to firmware to populate or | |
1295 | * update the internal driver scan table. | |
1296 | */ | |
1a1fb970 AK |
1297 | int mwifiex_scan_networks(struct mwifiex_private *priv, |
1298 | const struct mwifiex_user_scan_cfg *user_scan_in) | |
5e6e3a92 BZ |
1299 | { |
1300 | int ret = 0; | |
1301 | struct mwifiex_adapter *adapter = priv->adapter; | |
270e58e8 YAP |
1302 | struct cmd_ctrl_node *cmd_node; |
1303 | union mwifiex_scan_cmd_config_tlv *scan_cfg_out; | |
5e6e3a92 BZ |
1304 | struct mwifiex_ie_types_chan_list_param_set *chan_list_out; |
1305 | u32 buf_size; | |
1306 | struct mwifiex_chan_scan_param_set *scan_chan_list; | |
5e6e3a92 BZ |
1307 | u8 filtered_scan; |
1308 | u8 scan_current_chan_only; | |
1309 | u8 max_chan_per_scan; | |
1310 | unsigned long flags; | |
1311 | ||
600f5d90 | 1312 | if (adapter->scan_processing) { |
5e6e3a92 BZ |
1313 | dev_dbg(adapter->dev, "cmd: Scan already in process...\n"); |
1314 | return ret; | |
1315 | } | |
1316 | ||
1317 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1318 | adapter->scan_processing = true; | |
1319 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1320 | ||
600f5d90 | 1321 | if (priv->scan_block) { |
5e6e3a92 BZ |
1322 | dev_dbg(adapter->dev, |
1323 | "cmd: Scan is blocked during association...\n"); | |
1324 | return ret; | |
1325 | } | |
1326 | ||
1327 | scan_cfg_out = kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv), | |
cff23cec | 1328 | GFP_KERNEL); |
5e6e3a92 BZ |
1329 | if (!scan_cfg_out) { |
1330 | dev_err(adapter->dev, "failed to alloc scan_cfg_out\n"); | |
b53575ec | 1331 | return -ENOMEM; |
5e6e3a92 BZ |
1332 | } |
1333 | ||
1334 | buf_size = sizeof(struct mwifiex_chan_scan_param_set) * | |
cff23cec | 1335 | MWIFIEX_USER_SCAN_CHAN_MAX; |
5e6e3a92 BZ |
1336 | scan_chan_list = kzalloc(buf_size, GFP_KERNEL); |
1337 | if (!scan_chan_list) { | |
1338 | dev_err(adapter->dev, "failed to alloc scan_chan_list\n"); | |
1339 | kfree(scan_cfg_out); | |
b53575ec | 1340 | return -ENOMEM; |
5e6e3a92 BZ |
1341 | } |
1342 | ||
cff23cec YAP |
1343 | mwifiex_config_scan(priv, user_scan_in, &scan_cfg_out->config, |
1344 | &chan_list_out, scan_chan_list, &max_chan_per_scan, | |
1345 | &filtered_scan, &scan_current_chan_only); | |
5e6e3a92 | 1346 | |
600f5d90 AK |
1347 | ret = mwifiex_scan_channel_list(priv, max_chan_per_scan, filtered_scan, |
1348 | &scan_cfg_out->config, chan_list_out, | |
1349 | scan_chan_list); | |
5e6e3a92 BZ |
1350 | |
1351 | /* Get scan command from scan_pending_q and put to cmd_pending_q */ | |
1352 | if (!ret) { | |
1353 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1354 | if (!list_empty(&adapter->scan_pending_q)) { | |
1355 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
cff23cec | 1356 | struct cmd_ctrl_node, list); |
5e6e3a92 BZ |
1357 | list_del(&cmd_node->list); |
1358 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
cff23cec | 1359 | flags); |
efaaa8b8 | 1360 | adapter->cmd_queued = cmd_node; |
5e6e3a92 BZ |
1361 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, |
1362 | true); | |
1a1fb970 | 1363 | queue_work(adapter->workqueue, &adapter->main_work); |
5e6e3a92 BZ |
1364 | } else { |
1365 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
1366 | flags); | |
1367 | } | |
5e6e3a92 BZ |
1368 | } else { |
1369 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1370 | adapter->scan_processing = true; | |
1371 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1372 | } | |
1373 | ||
1374 | kfree(scan_cfg_out); | |
1375 | kfree(scan_chan_list); | |
1376 | return ret; | |
1377 | } | |
1378 | ||
1379 | /* | |
1380 | * This function prepares a scan command to be sent to the firmware. | |
1381 | * | |
1382 | * This uses the scan command configuration sent to the command processing | |
1383 | * module in command preparation stage to configure a scan command structure | |
1384 | * to send to firmware. | |
1385 | * | |
1386 | * The fixed fields specifying the BSS type and BSSID filters as well as a | |
1387 | * variable number/length of TLVs are sent in the command to firmware. | |
1388 | * | |
1389 | * Preparation also includes - | |
1390 | * - Setting command ID, and proper size | |
1391 | * - Ensuring correct endian-ness | |
1392 | */ | |
a5ffddb7 AK |
1393 | int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command *cmd, |
1394 | struct mwifiex_scan_cmd_config *scan_cfg) | |
5e6e3a92 BZ |
1395 | { |
1396 | struct host_cmd_ds_802_11_scan *scan_cmd = &cmd->params.scan; | |
5e6e3a92 BZ |
1397 | |
1398 | /* Set fixed field variables in scan command */ | |
1399 | scan_cmd->bss_mode = scan_cfg->bss_mode; | |
1400 | memcpy(scan_cmd->bssid, scan_cfg->specific_bssid, | |
1401 | sizeof(scan_cmd->bssid)); | |
1402 | memcpy(scan_cmd->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len); | |
1403 | ||
1404 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN); | |
1405 | ||
1406 | /* Size is equal to the sizeof(fixed portions) + the TLV len + header */ | |
1407 | cmd->size = cpu_to_le16((u16) (sizeof(scan_cmd->bss_mode) | |
1408 | + sizeof(scan_cmd->bssid) | |
1409 | + scan_cfg->tlv_buf_len + S_DS_GEN)); | |
1410 | ||
1411 | return 0; | |
1412 | } | |
1413 | ||
7c6fa2a8 AK |
1414 | /* |
1415 | * This function checks compatibility of requested network with current | |
1416 | * driver settings. | |
1417 | */ | |
1418 | int mwifiex_check_network_compatibility(struct mwifiex_private *priv, | |
1419 | struct mwifiex_bssdescriptor *bss_desc) | |
1420 | { | |
1421 | int ret = -1; | |
1422 | ||
1423 | if (!bss_desc) | |
1424 | return -1; | |
1425 | ||
6685d109 YAP |
1426 | if ((mwifiex_get_cfp(priv, (u8) bss_desc->bss_band, |
1427 | (u16) bss_desc->channel, 0))) { | |
7c6fa2a8 AK |
1428 | switch (priv->bss_mode) { |
1429 | case NL80211_IFTYPE_STATION: | |
1430 | case NL80211_IFTYPE_ADHOC: | |
1431 | ret = mwifiex_is_network_compatible(priv, bss_desc, | |
1432 | priv->bss_mode); | |
1433 | if (ret) | |
1434 | dev_err(priv->adapter->dev, "cannot find ssid " | |
1435 | "%s\n", bss_desc->ssid.ssid); | |
2f9279b5 | 1436 | break; |
7c6fa2a8 | 1437 | default: |
2f9279b5 | 1438 | ret = 0; |
7c6fa2a8 AK |
1439 | } |
1440 | } | |
1441 | ||
1442 | return ret; | |
1443 | } | |
1444 | ||
9558a407 AK |
1445 | static int mwifiex_update_curr_bss_params(struct mwifiex_private *priv, |
1446 | struct cfg80211_bss *bss) | |
7c6fa2a8 | 1447 | { |
db652e4b | 1448 | struct mwifiex_bssdescriptor *bss_desc; |
7c6fa2a8 AK |
1449 | int ret; |
1450 | unsigned long flags; | |
7c6fa2a8 AK |
1451 | |
1452 | /* Allocate and fill new bss descriptor */ | |
1453 | bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor), | |
1454 | GFP_KERNEL); | |
1455 | if (!bss_desc) { | |
1456 | dev_err(priv->adapter->dev, " failed to alloc bss_desc\n"); | |
1457 | return -ENOMEM; | |
1458 | } | |
5982b47a | 1459 | |
9558a407 | 1460 | ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc); |
7c6fa2a8 AK |
1461 | if (ret) |
1462 | goto done; | |
1463 | ||
1464 | ret = mwifiex_check_network_compatibility(priv, bss_desc); | |
1465 | if (ret) | |
1466 | goto done; | |
1467 | ||
1468 | /* Update current bss descriptor parameters */ | |
1469 | spin_lock_irqsave(&priv->curr_bcn_buf_lock, flags); | |
1470 | priv->curr_bss_params.bss_descriptor.bcn_wpa_ie = NULL; | |
1471 | priv->curr_bss_params.bss_descriptor.wpa_offset = 0; | |
1472 | priv->curr_bss_params.bss_descriptor.bcn_rsn_ie = NULL; | |
1473 | priv->curr_bss_params.bss_descriptor.rsn_offset = 0; | |
1474 | priv->curr_bss_params.bss_descriptor.bcn_wapi_ie = NULL; | |
1475 | priv->curr_bss_params.bss_descriptor.wapi_offset = 0; | |
1476 | priv->curr_bss_params.bss_descriptor.bcn_ht_cap = NULL; | |
1477 | priv->curr_bss_params.bss_descriptor.ht_cap_offset = | |
1478 | 0; | |
074d46d1 | 1479 | priv->curr_bss_params.bss_descriptor.bcn_ht_oper = NULL; |
7c6fa2a8 AK |
1480 | priv->curr_bss_params.bss_descriptor.ht_info_offset = |
1481 | 0; | |
1482 | priv->curr_bss_params.bss_descriptor.bcn_bss_co_2040 = | |
1483 | NULL; | |
1484 | priv->curr_bss_params.bss_descriptor. | |
1485 | bss_co_2040_offset = 0; | |
1486 | priv->curr_bss_params.bss_descriptor.bcn_ext_cap = NULL; | |
1487 | priv->curr_bss_params.bss_descriptor.ext_cap_offset = 0; | |
1488 | priv->curr_bss_params.bss_descriptor.beacon_buf = NULL; | |
1489 | priv->curr_bss_params.bss_descriptor.beacon_buf_size = | |
1490 | 0; | |
1491 | ||
1492 | /* Make a copy of current BSSID descriptor */ | |
1493 | memcpy(&priv->curr_bss_params.bss_descriptor, bss_desc, | |
cff23cec | 1494 | sizeof(priv->curr_bss_params.bss_descriptor)); |
7c6fa2a8 AK |
1495 | mwifiex_save_curr_bcn(priv); |
1496 | spin_unlock_irqrestore(&priv->curr_bcn_buf_lock, flags); | |
1497 | ||
1498 | done: | |
1499 | kfree(bss_desc); | |
7c6fa2a8 AK |
1500 | return 0; |
1501 | } | |
1502 | ||
5e6e3a92 BZ |
1503 | /* |
1504 | * This function handles the command response of scan. | |
1505 | * | |
1506 | * The response buffer for the scan command has the following | |
1507 | * memory layout: | |
1508 | * | |
1509 | * .-------------------------------------------------------------. | |
1510 | * | Header (4 * sizeof(t_u16)): Standard command response hdr | | |
1511 | * .-------------------------------------------------------------. | |
1512 | * | BufSize (t_u16) : sizeof the BSS Description data | | |
1513 | * .-------------------------------------------------------------. | |
1514 | * | NumOfSet (t_u8) : Number of BSS Descs returned | | |
1515 | * .-------------------------------------------------------------. | |
1516 | * | BSSDescription data (variable, size given in BufSize) | | |
1517 | * .-------------------------------------------------------------. | |
1518 | * | TLV data (variable, size calculated using Header->Size, | | |
1519 | * | BufSize and sizeof the fixed fields above) | | |
1520 | * .-------------------------------------------------------------. | |
1521 | */ | |
1522 | int mwifiex_ret_802_11_scan(struct mwifiex_private *priv, | |
600f5d90 | 1523 | struct host_cmd_ds_command *resp) |
5e6e3a92 BZ |
1524 | { |
1525 | int ret = 0; | |
1526 | struct mwifiex_adapter *adapter = priv->adapter; | |
270e58e8 YAP |
1527 | struct cmd_ctrl_node *cmd_node; |
1528 | struct host_cmd_ds_802_11_scan_rsp *scan_rsp; | |
5e6e3a92 BZ |
1529 | struct mwifiex_ie_types_data *tlv_data; |
1530 | struct mwifiex_ie_types_tsf_timestamp *tsf_tlv; | |
1531 | u8 *bss_info; | |
1532 | u32 scan_resp_size; | |
1533 | u32 bytes_left; | |
5e6e3a92 BZ |
1534 | u32 idx; |
1535 | u32 tlv_buf_size; | |
5e6e3a92 BZ |
1536 | struct mwifiex_chan_freq_power *cfp; |
1537 | struct mwifiex_ie_types_chan_band_list_param_set *chan_band_tlv; | |
1538 | struct chan_band_param_set *chan_band; | |
5e6e3a92 BZ |
1539 | u8 is_bgscan_resp; |
1540 | unsigned long flags; | |
5116f3ce | 1541 | struct cfg80211_bss *bss; |
5e6e3a92 BZ |
1542 | |
1543 | is_bgscan_resp = (le16_to_cpu(resp->command) | |
cff23cec | 1544 | == HostCmd_CMD_802_11_BG_SCAN_QUERY); |
5e6e3a92 BZ |
1545 | if (is_bgscan_resp) |
1546 | scan_rsp = &resp->params.bg_scan_query_resp.scan_resp; | |
1547 | else | |
1548 | scan_rsp = &resp->params.scan_resp; | |
1549 | ||
1550 | ||
67a50035 | 1551 | if (scan_rsp->number_of_sets > MWIFIEX_MAX_AP) { |
5e6e3a92 | 1552 | dev_err(adapter->dev, "SCAN_RESP: too many AP returned (%d)\n", |
cff23cec | 1553 | scan_rsp->number_of_sets); |
5e6e3a92 BZ |
1554 | ret = -1; |
1555 | goto done; | |
1556 | } | |
1557 | ||
1558 | bytes_left = le16_to_cpu(scan_rsp->bss_descript_size); | |
1559 | dev_dbg(adapter->dev, "info: SCAN_RESP: bss_descript_size %d\n", | |
cff23cec | 1560 | bytes_left); |
5e6e3a92 BZ |
1561 | |
1562 | scan_resp_size = le16_to_cpu(resp->size); | |
1563 | ||
1564 | dev_dbg(adapter->dev, | |
1565 | "info: SCAN_RESP: returned %d APs before parsing\n", | |
cff23cec | 1566 | scan_rsp->number_of_sets); |
5e6e3a92 | 1567 | |
5e6e3a92 BZ |
1568 | bss_info = scan_rsp->bss_desc_and_tlv_buffer; |
1569 | ||
1570 | /* | |
1571 | * The size of the TLV buffer is equal to the entire command response | |
1572 | * size (scan_resp_size) minus the fixed fields (sizeof()'s), the | |
1573 | * BSS Descriptions (bss_descript_size as bytesLef) and the command | |
1574 | * response header (S_DS_GEN) | |
1575 | */ | |
1576 | tlv_buf_size = scan_resp_size - (bytes_left | |
1577 | + sizeof(scan_rsp->bss_descript_size) | |
1578 | + sizeof(scan_rsp->number_of_sets) | |
1579 | + S_DS_GEN); | |
1580 | ||
1581 | tlv_data = (struct mwifiex_ie_types_data *) (scan_rsp-> | |
1582 | bss_desc_and_tlv_buffer + | |
1583 | bytes_left); | |
1584 | ||
1585 | /* Search the TLV buffer space in the scan response for any valid | |
1586 | TLVs */ | |
1587 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
1588 | TLV_TYPE_TSFTIMESTAMP, | |
1589 | (struct mwifiex_ie_types_data **) | |
1590 | &tsf_tlv); | |
1591 | ||
1592 | /* Search the TLV buffer space in the scan response for any valid | |
1593 | TLVs */ | |
1594 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
1595 | TLV_TYPE_CHANNELBANDLIST, | |
1596 | (struct mwifiex_ie_types_data **) | |
1597 | &chan_band_tlv); | |
1598 | ||
5e6e3a92 | 1599 | for (idx = 0; idx < scan_rsp->number_of_sets && bytes_left; idx++) { |
7c6fa2a8 AK |
1600 | u8 bssid[ETH_ALEN]; |
1601 | s32 rssi; | |
1602 | const u8 *ie_buf; | |
1603 | size_t ie_len; | |
6685d109 | 1604 | u16 channel = 0; |
b5abcf02 | 1605 | u64 fw_tsf = 0; |
7c6fa2a8 AK |
1606 | u16 beacon_size = 0; |
1607 | u32 curr_bcn_bytes; | |
1608 | u32 freq; | |
1609 | u16 beacon_period; | |
1610 | u16 cap_info_bitmap; | |
1611 | u8 *current_ptr; | |
b5abcf02 | 1612 | u64 timestamp; |
7c6fa2a8 | 1613 | struct mwifiex_bcn_param *bcn_param; |
b5abcf02 | 1614 | struct mwifiex_bss_priv *bss_priv; |
7c6fa2a8 AK |
1615 | |
1616 | if (bytes_left >= sizeof(beacon_size)) { | |
1617 | /* Extract & convert beacon size from command buffer */ | |
1618 | memcpy(&beacon_size, bss_info, sizeof(beacon_size)); | |
1619 | bytes_left -= sizeof(beacon_size); | |
1620 | bss_info += sizeof(beacon_size); | |
5e6e3a92 BZ |
1621 | } |
1622 | ||
7c6fa2a8 AK |
1623 | if (!beacon_size || beacon_size > bytes_left) { |
1624 | bss_info += bytes_left; | |
1625 | bytes_left = 0; | |
1626 | return -1; | |
1627 | } | |
5e6e3a92 | 1628 | |
7c6fa2a8 AK |
1629 | /* Initialize the current working beacon pointer for this BSS |
1630 | * iteration */ | |
1631 | current_ptr = bss_info; | |
1632 | ||
1633 | /* Advance the return beacon pointer past the current beacon */ | |
1634 | bss_info += beacon_size; | |
1635 | bytes_left -= beacon_size; | |
1636 | ||
1637 | curr_bcn_bytes = beacon_size; | |
1638 | ||
1639 | /* | |
1640 | * First 5 fields are bssid, RSSI, time stamp, beacon interval, | |
1641 | * and capability information | |
1642 | */ | |
1643 | if (curr_bcn_bytes < sizeof(struct mwifiex_bcn_param)) { | |
cff23cec YAP |
1644 | dev_err(adapter->dev, |
1645 | "InterpretIE: not enough bytes left\n"); | |
7c6fa2a8 AK |
1646 | continue; |
1647 | } | |
1648 | bcn_param = (struct mwifiex_bcn_param *)current_ptr; | |
1649 | current_ptr += sizeof(*bcn_param); | |
1650 | curr_bcn_bytes -= sizeof(*bcn_param); | |
1651 | ||
1652 | memcpy(bssid, bcn_param->bssid, ETH_ALEN); | |
1653 | ||
c9919be6 AK |
1654 | rssi = (s32) bcn_param->rssi; |
1655 | rssi = (-rssi) * 100; /* Convert dBm to mBm */ | |
1656 | dev_dbg(adapter->dev, "info: InterpretIE: RSSI=%d\n", rssi); | |
7c6fa2a8 | 1657 | |
b5abcf02 | 1658 | timestamp = le64_to_cpu(bcn_param->timestamp); |
7c6fa2a8 AK |
1659 | beacon_period = le16_to_cpu(bcn_param->beacon_period); |
1660 | ||
1661 | cap_info_bitmap = le16_to_cpu(bcn_param->cap_info_bitmap); | |
1662 | dev_dbg(adapter->dev, "info: InterpretIE: capabilities=0x%X\n", | |
cff23cec | 1663 | cap_info_bitmap); |
7c6fa2a8 AK |
1664 | |
1665 | /* Rest of the current buffer are IE's */ | |
1666 | ie_buf = current_ptr; | |
1667 | ie_len = curr_bcn_bytes; | |
cff23cec YAP |
1668 | dev_dbg(adapter->dev, |
1669 | "info: InterpretIE: IELength for this AP = %d\n", | |
1670 | curr_bcn_bytes); | |
7c6fa2a8 AK |
1671 | |
1672 | while (curr_bcn_bytes >= sizeof(struct ieee_types_header)) { | |
1673 | u8 element_id, element_len; | |
1674 | ||
1675 | element_id = *current_ptr; | |
1676 | element_len = *(current_ptr + 1); | |
1677 | if (curr_bcn_bytes < element_len + | |
1678 | sizeof(struct ieee_types_header)) { | |
cff23cec YAP |
1679 | dev_err(priv->adapter->dev, |
1680 | "%s: bytes left < IE length\n", | |
7c6fa2a8 AK |
1681 | __func__); |
1682 | goto done; | |
5e6e3a92 | 1683 | } |
7c6fa2a8 | 1684 | if (element_id == WLAN_EID_DS_PARAMS) { |
2c208890 | 1685 | channel = *(current_ptr + sizeof(struct ieee_types_header)); |
5e6e3a92 BZ |
1686 | break; |
1687 | } | |
7c6fa2a8 AK |
1688 | |
1689 | current_ptr += element_len + | |
1690 | sizeof(struct ieee_types_header); | |
1691 | curr_bcn_bytes -= element_len + | |
1692 | sizeof(struct ieee_types_header); | |
5e6e3a92 BZ |
1693 | } |
1694 | ||
5e6e3a92 BZ |
1695 | /* |
1696 | * If the TSF TLV was appended to the scan results, save this | |
b5abcf02 AK |
1697 | * entry's TSF value in the fw_tsf field. It is the firmware's |
1698 | * TSF value at the time the beacon or probe response was | |
1699 | * received. | |
5e6e3a92 | 1700 | */ |
7c6fa2a8 | 1701 | if (tsf_tlv) |
b5abcf02 AK |
1702 | memcpy(&fw_tsf, &tsf_tlv->tsf_data[idx * TSF_DATA_SIZE], |
1703 | sizeof(fw_tsf)); | |
7c6fa2a8 | 1704 | |
6685d109 | 1705 | if (channel) { |
7c6fa2a8 AK |
1706 | struct ieee80211_channel *chan; |
1707 | u8 band; | |
1708 | ||
1709 | band = BAND_G; | |
1710 | if (chan_band_tlv) { | |
1711 | chan_band = | |
1712 | &chan_band_tlv->chan_band_param[idx]; | |
1713 | band = mwifiex_radio_type_to_band( | |
1714 | chan_band->radio_type | |
1715 | & (BIT(0) | BIT(1))); | |
1716 | } | |
5e6e3a92 | 1717 | |
6685d109 | 1718 | cfp = mwifiex_get_cfp(priv, band, channel, 0); |
5e6e3a92 | 1719 | |
7c6fa2a8 | 1720 | freq = cfp ? cfp->freq : 0; |
5e6e3a92 | 1721 | |
7c6fa2a8 | 1722 | chan = ieee80211_get_channel(priv->wdev->wiphy, freq); |
5e6e3a92 | 1723 | |
7c6fa2a8 | 1724 | if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) { |
5116f3ce | 1725 | bss = cfg80211_inform_bss(priv->wdev->wiphy, |
b5abcf02 | 1726 | chan, bssid, timestamp, |
5116f3ce AK |
1727 | cap_info_bitmap, beacon_period, |
1728 | ie_buf, ie_len, rssi, GFP_KERNEL); | |
b5abcf02 AK |
1729 | bss_priv = (struct mwifiex_bss_priv *)bss->priv; |
1730 | bss_priv->band = band; | |
1731 | bss_priv->fw_tsf = fw_tsf; | |
cff23cec YAP |
1732 | if (priv->media_connected && |
1733 | !memcmp(bssid, | |
1734 | priv->curr_bss_params.bss_descriptor | |
1735 | .mac_address, ETH_ALEN)) | |
9558a407 AK |
1736 | mwifiex_update_curr_bss_params(priv, |
1737 | bss); | |
1738 | cfg80211_put_bss(bss); | |
7c6fa2a8 AK |
1739 | } |
1740 | } else { | |
1741 | dev_dbg(adapter->dev, "missing BSS channel IE\n"); | |
1742 | } | |
1743 | } | |
5e6e3a92 BZ |
1744 | |
1745 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1746 | if (list_empty(&adapter->scan_pending_q)) { | |
1747 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1748 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1749 | adapter->scan_processing = false; | |
1750 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
5e6e3a92 BZ |
1751 | |
1752 | /* Need to indicate IOCTL complete */ | |
600f5d90 AK |
1753 | if (adapter->curr_cmd->wait_q_enabled) { |
1754 | adapter->cmd_wait_q.status = 0; | |
efaaa8b8 | 1755 | mwifiex_complete_cmd(adapter, adapter->curr_cmd); |
5e6e3a92 BZ |
1756 | } |
1757 | if (priv->report_scan_result) | |
1758 | priv->report_scan_result = false; | |
1759 | if (priv->scan_pending_on_block) { | |
1760 | priv->scan_pending_on_block = false; | |
1761 | up(&priv->async_sem); | |
1762 | } | |
1763 | ||
38c9d664 | 1764 | if (priv->user_scan_cfg) { |
cff23cec YAP |
1765 | dev_dbg(priv->adapter->dev, |
1766 | "info: %s: sending scan results\n", __func__); | |
38c9d664 AK |
1767 | cfg80211_scan_done(priv->scan_request, 0); |
1768 | priv->scan_request = NULL; | |
1769 | kfree(priv->user_scan_cfg); | |
1770 | priv->user_scan_cfg = NULL; | |
1771 | } | |
5e6e3a92 | 1772 | } else { |
3249ba73 AK |
1773 | if (!mwifiex_wmm_lists_empty(adapter)) { |
1774 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
1775 | flags); | |
1776 | adapter->scan_delay_cnt = 1; | |
1777 | mod_timer(&priv->scan_delay_timer, jiffies + | |
1778 | msecs_to_jiffies(MWIFIEX_SCAN_DELAY_MSEC)); | |
1779 | } else { | |
1780 | /* Get scan command from scan_pending_q and put to | |
1781 | cmd_pending_q */ | |
1782 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
1783 | struct cmd_ctrl_node, list); | |
1784 | list_del(&cmd_node->list); | |
1785 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
1786 | flags); | |
1787 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, | |
1788 | true); | |
1789 | } | |
5e6e3a92 BZ |
1790 | } |
1791 | ||
1792 | done: | |
5e6e3a92 BZ |
1793 | return ret; |
1794 | } | |
1795 | ||
1796 | /* | |
1797 | * This function prepares command for background scan query. | |
1798 | * | |
1799 | * Preparation includes - | |
1800 | * - Setting command ID and proper size | |
1801 | * - Setting background scan flush parameter | |
1802 | * - Ensuring correct endian-ness | |
1803 | */ | |
572e8f3e | 1804 | int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command *cmd) |
5e6e3a92 BZ |
1805 | { |
1806 | struct host_cmd_ds_802_11_bg_scan_query *bg_query = | |
1807 | &cmd->params.bg_scan_query; | |
1808 | ||
1809 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY); | |
1810 | cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query) | |
1811 | + S_DS_GEN); | |
1812 | ||
1813 | bg_query->flush = 1; | |
1814 | ||
1815 | return 0; | |
1816 | } | |
1817 | ||
5e6e3a92 BZ |
1818 | /* |
1819 | * This function inserts scan command node to the scan pending queue. | |
1820 | */ | |
1821 | void | |
1822 | mwifiex_queue_scan_cmd(struct mwifiex_private *priv, | |
1823 | struct cmd_ctrl_node *cmd_node) | |
1824 | { | |
1825 | struct mwifiex_adapter *adapter = priv->adapter; | |
1826 | unsigned long flags; | |
1827 | ||
600f5d90 | 1828 | cmd_node->wait_q_enabled = true; |
efaaa8b8 | 1829 | cmd_node->condition = &adapter->scan_wait_q_woken; |
5e6e3a92 BZ |
1830 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); |
1831 | list_add_tail(&cmd_node->list, &adapter->scan_pending_q); | |
1832 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1833 | } | |
1834 | ||
5e6e3a92 BZ |
1835 | /* |
1836 | * This function sends a scan command for all available channels to the | |
1837 | * firmware, filtered on a specific SSID. | |
1838 | */ | |
1839 | static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv, | |
b9be5f39 | 1840 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 BZ |
1841 | { |
1842 | struct mwifiex_adapter *adapter = priv->adapter; | |
1843 | int ret = 0; | |
1844 | struct mwifiex_user_scan_cfg *scan_cfg; | |
1845 | ||
1846 | if (!req_ssid) | |
1847 | return -1; | |
1848 | ||
600f5d90 | 1849 | if (adapter->scan_processing) { |
5e6e3a92 BZ |
1850 | dev_dbg(adapter->dev, "cmd: Scan already in process...\n"); |
1851 | return ret; | |
1852 | } | |
1853 | ||
600f5d90 | 1854 | if (priv->scan_block) { |
5e6e3a92 BZ |
1855 | dev_dbg(adapter->dev, |
1856 | "cmd: Scan is blocked during association...\n"); | |
1857 | return ret; | |
1858 | } | |
1859 | ||
5e6e3a92 BZ |
1860 | scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg), GFP_KERNEL); |
1861 | if (!scan_cfg) { | |
1862 | dev_err(adapter->dev, "failed to alloc scan_cfg\n"); | |
b53575ec | 1863 | return -ENOMEM; |
5e6e3a92 BZ |
1864 | } |
1865 | ||
be0b281e AK |
1866 | scan_cfg->ssid_list = req_ssid; |
1867 | scan_cfg->num_ssids = 1; | |
5e6e3a92 | 1868 | |
600f5d90 | 1869 | ret = mwifiex_scan_networks(priv, scan_cfg); |
5e6e3a92 BZ |
1870 | |
1871 | kfree(scan_cfg); | |
1872 | return ret; | |
1873 | } | |
1874 | ||
1875 | /* | |
1876 | * Sends IOCTL request to start a scan. | |
1877 | * | |
1878 | * This function allocates the IOCTL request buffer, fills it | |
1879 | * with requisite parameters and calls the IOCTL handler. | |
1880 | * | |
1881 | * Scan command can be issued for both normal scan and specific SSID | |
1882 | * scan, depending upon whether an SSID is provided or not. | |
1883 | */ | |
600f5d90 | 1884 | int mwifiex_request_scan(struct mwifiex_private *priv, |
b9be5f39 | 1885 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 | 1886 | { |
270e58e8 | 1887 | int ret; |
5e6e3a92 BZ |
1888 | |
1889 | if (down_interruptible(&priv->async_sem)) { | |
1890 | dev_err(priv->adapter->dev, "%s: acquire semaphore\n", | |
cff23cec | 1891 | __func__); |
5e6e3a92 BZ |
1892 | return -1; |
1893 | } | |
1894 | priv->scan_pending_on_block = true; | |
1895 | ||
efaaa8b8 | 1896 | priv->adapter->scan_wait_q_woken = false; |
5e6e3a92 BZ |
1897 | |
1898 | if (req_ssid && req_ssid->ssid_len != 0) | |
1899 | /* Specific SSID scan */ | |
600f5d90 | 1900 | ret = mwifiex_scan_specific_ssid(priv, req_ssid); |
5e6e3a92 BZ |
1901 | else |
1902 | /* Normal scan */ | |
600f5d90 AK |
1903 | ret = mwifiex_scan_networks(priv, NULL); |
1904 | ||
1905 | if (!ret) | |
1906 | ret = mwifiex_wait_queue_complete(priv->adapter); | |
1907 | ||
5e6e3a92 BZ |
1908 | if (ret == -1) { |
1909 | priv->scan_pending_on_block = false; | |
1910 | up(&priv->async_sem); | |
1911 | } | |
600f5d90 | 1912 | |
5e6e3a92 BZ |
1913 | return ret; |
1914 | } | |
1915 | ||
1916 | /* | |
1917 | * This function appends the vendor specific IE TLV to a buffer. | |
1918 | */ | |
1919 | int | |
1920 | mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv, | |
1921 | u16 vsie_mask, u8 **buffer) | |
1922 | { | |
1923 | int id, ret_len = 0; | |
1924 | struct mwifiex_ie_types_vendor_param_set *vs_param_set; | |
1925 | ||
1926 | if (!buffer) | |
1927 | return 0; | |
1928 | if (!(*buffer)) | |
1929 | return 0; | |
1930 | ||
1931 | /* | |
1932 | * Traverse through the saved vendor specific IE array and append | |
1933 | * the selected(scan/assoc/adhoc) IE as TLV to the command | |
1934 | */ | |
1935 | for (id = 0; id < MWIFIEX_MAX_VSIE_NUM; id++) { | |
1936 | if (priv->vs_ie[id].mask & vsie_mask) { | |
1937 | vs_param_set = | |
1938 | (struct mwifiex_ie_types_vendor_param_set *) | |
1939 | *buffer; | |
1940 | vs_param_set->header.type = | |
1941 | cpu_to_le16(TLV_TYPE_PASSTHROUGH); | |
1942 | vs_param_set->header.len = | |
1943 | cpu_to_le16((((u16) priv->vs_ie[id].ie[1]) | |
1944 | & 0x00FF) + 2); | |
1945 | memcpy(vs_param_set->ie, priv->vs_ie[id].ie, | |
1946 | le16_to_cpu(vs_param_set->header.len)); | |
1947 | *buffer += le16_to_cpu(vs_param_set->header.len) + | |
1948 | sizeof(struct mwifiex_ie_types_header); | |
1949 | ret_len += le16_to_cpu(vs_param_set->header.len) + | |
1950 | sizeof(struct mwifiex_ie_types_header); | |
1951 | } | |
1952 | } | |
1953 | return ret_len; | |
1954 | } | |
1955 | ||
1956 | /* | |
1957 | * This function saves a beacon buffer of the current BSS descriptor. | |
1958 | * | |
1959 | * The current beacon buffer is saved so that it can be restored in the | |
1960 | * following cases that makes the beacon buffer not to contain the current | |
1961 | * ssid's beacon buffer. | |
1962 | * - The current ssid was not found somehow in the last scan. | |
1963 | * - The current ssid was the last entry of the scan table and overloaded. | |
1964 | */ | |
1965 | void | |
1966 | mwifiex_save_curr_bcn(struct mwifiex_private *priv) | |
1967 | { | |
1968 | struct mwifiex_bssdescriptor *curr_bss = | |
1969 | &priv->curr_bss_params.bss_descriptor; | |
1970 | ||
030fe797 AK |
1971 | if (!curr_bss->beacon_buf_size) |
1972 | return; | |
5e6e3a92 | 1973 | |
030fe797 AK |
1974 | /* allocate beacon buffer at 1st time; or if it's size has changed */ |
1975 | if (!priv->curr_bcn_buf || | |
cff23cec | 1976 | priv->curr_bcn_size != curr_bss->beacon_buf_size) { |
5e6e3a92 | 1977 | priv->curr_bcn_size = curr_bss->beacon_buf_size; |
5e6e3a92 | 1978 | |
030fe797 | 1979 | kfree(priv->curr_bcn_buf); |
5982b47a | 1980 | priv->curr_bcn_buf = kmalloc(curr_bss->beacon_buf_size, |
cff23cec | 1981 | GFP_ATOMIC); |
5e6e3a92 BZ |
1982 | if (!priv->curr_bcn_buf) { |
1983 | dev_err(priv->adapter->dev, | |
cff23cec | 1984 | "failed to alloc curr_bcn_buf\n"); |
030fe797 | 1985 | return; |
5e6e3a92 BZ |
1986 | } |
1987 | } | |
030fe797 AK |
1988 | |
1989 | memcpy(priv->curr_bcn_buf, curr_bss->beacon_buf, | |
cff23cec | 1990 | curr_bss->beacon_buf_size); |
030fe797 AK |
1991 | dev_dbg(priv->adapter->dev, "info: current beacon saved %d\n", |
1992 | priv->curr_bcn_size); | |
7c6fa2a8 AK |
1993 | |
1994 | curr_bss->beacon_buf = priv->curr_bcn_buf; | |
1995 | ||
1996 | /* adjust the pointers in the current BSS descriptor */ | |
1997 | if (curr_bss->bcn_wpa_ie) | |
1998 | curr_bss->bcn_wpa_ie = | |
1999 | (struct ieee_types_vendor_specific *) | |
2000 | (curr_bss->beacon_buf + | |
2001 | curr_bss->wpa_offset); | |
2002 | ||
2003 | if (curr_bss->bcn_rsn_ie) | |
2004 | curr_bss->bcn_rsn_ie = (struct ieee_types_generic *) | |
2005 | (curr_bss->beacon_buf + | |
2006 | curr_bss->rsn_offset); | |
2007 | ||
2008 | if (curr_bss->bcn_ht_cap) | |
2009 | curr_bss->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
2010 | (curr_bss->beacon_buf + | |
2011 | curr_bss->ht_cap_offset); | |
2012 | ||
074d46d1 JB |
2013 | if (curr_bss->bcn_ht_oper) |
2014 | curr_bss->bcn_ht_oper = (struct ieee80211_ht_operation *) | |
7c6fa2a8 AK |
2015 | (curr_bss->beacon_buf + |
2016 | curr_bss->ht_info_offset); | |
2017 | ||
2018 | if (curr_bss->bcn_bss_co_2040) | |
2019 | curr_bss->bcn_bss_co_2040 = | |
2c208890 | 2020 | (curr_bss->beacon_buf + curr_bss->bss_co_2040_offset); |
7c6fa2a8 AK |
2021 | |
2022 | if (curr_bss->bcn_ext_cap) | |
2c208890 JP |
2023 | curr_bss->bcn_ext_cap = curr_bss->beacon_buf + |
2024 | curr_bss->ext_cap_offset; | |
5e6e3a92 BZ |
2025 | } |
2026 | ||
2027 | /* | |
2028 | * This function frees the current BSS descriptor beacon buffer. | |
2029 | */ | |
2030 | void | |
2031 | mwifiex_free_curr_bcn(struct mwifiex_private *priv) | |
2032 | { | |
2033 | kfree(priv->curr_bcn_buf); | |
2034 | priv->curr_bcn_buf = NULL; | |
2035 | } |