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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 | ||
31 | #define MWIFIEX_CHANNELS_PER_SCAN_CMD 4 | |
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 | ||
79 | /* | |
80 | * This function parses a given IE for a given OUI. | |
81 | * | |
82 | * This is used to parse a WPA/RSN IE to find if it has | |
83 | * a given oui in PTK. | |
84 | */ | |
85 | static u8 | |
86 | mwifiex_search_oui_in_ie(struct ie_body *iebody, u8 *oui) | |
87 | { | |
88 | u8 count; | |
89 | ||
90 | count = iebody->ptk_cnt[0]; | |
91 | ||
92 | /* There could be multiple OUIs for PTK hence | |
93 | 1) Take the length. | |
94 | 2) Check all the OUIs for AES. | |
95 | 3) If one of them is AES then pass success. */ | |
96 | while (count) { | |
97 | if (!memcmp(iebody->ptk_body, oui, sizeof(iebody->ptk_body))) | |
98 | return MWIFIEX_OUI_PRESENT; | |
99 | ||
100 | --count; | |
101 | if (count) | |
102 | iebody = (struct ie_body *) ((u8 *) iebody + | |
103 | sizeof(iebody->ptk_body)); | |
104 | } | |
105 | ||
106 | pr_debug("info: %s: OUI is not found in PTK\n", __func__); | |
107 | return MWIFIEX_OUI_NOT_PRESENT; | |
108 | } | |
109 | ||
110 | /* | |
111 | * This function checks if a given OUI is present in a RSN IE. | |
112 | * | |
113 | * The function first checks if a RSN IE is present or not in the | |
114 | * BSS descriptor. It tries to locate the OUI only if such an IE is | |
115 | * present. | |
116 | */ | |
117 | static u8 | |
118 | mwifiex_is_rsn_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher) | |
119 | { | |
270e58e8 YAP |
120 | u8 *oui; |
121 | struct ie_body *iebody; | |
5e6e3a92 BZ |
122 | u8 ret = MWIFIEX_OUI_NOT_PRESENT; |
123 | ||
124 | if (((bss_desc->bcn_rsn_ie) && ((*(bss_desc->bcn_rsn_ie)). | |
125 | ieee_hdr.element_id == WLAN_EID_RSN))) { | |
126 | iebody = (struct ie_body *) | |
127 | (((u8 *) bss_desc->bcn_rsn_ie->data) + | |
cff23cec | 128 | RSN_GTK_OUI_OFFSET); |
5e6e3a92 BZ |
129 | oui = &mwifiex_rsn_oui[cipher][0]; |
130 | ret = mwifiex_search_oui_in_ie(iebody, oui); | |
131 | if (ret) | |
132 | return ret; | |
133 | } | |
134 | return ret; | |
135 | } | |
136 | ||
137 | /* | |
138 | * This function checks if a given OUI is present in a WPA IE. | |
139 | * | |
140 | * The function first checks if a WPA IE is present or not in the | |
141 | * BSS descriptor. It tries to locate the OUI only if such an IE is | |
142 | * present. | |
143 | */ | |
144 | static u8 | |
145 | mwifiex_is_wpa_oui_present(struct mwifiex_bssdescriptor *bss_desc, u32 cipher) | |
146 | { | |
270e58e8 YAP |
147 | u8 *oui; |
148 | struct ie_body *iebody; | |
5e6e3a92 BZ |
149 | u8 ret = MWIFIEX_OUI_NOT_PRESENT; |
150 | ||
cff23cec YAP |
151 | if (((bss_desc->bcn_wpa_ie) && |
152 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id == | |
153 | WLAN_EID_WPA))) { | |
5e6e3a92 BZ |
154 | iebody = (struct ie_body *) bss_desc->bcn_wpa_ie->data; |
155 | oui = &mwifiex_wpa_oui[cipher][0]; | |
156 | ret = mwifiex_search_oui_in_ie(iebody, oui); | |
157 | if (ret) | |
158 | return ret; | |
159 | } | |
160 | return ret; | |
161 | } | |
162 | ||
163 | /* | |
164 | * This function compares two SSIDs and checks if they match. | |
165 | */ | |
166 | s32 | |
b9be5f39 | 167 | mwifiex_ssid_cmp(struct cfg80211_ssid *ssid1, struct cfg80211_ssid *ssid2) |
5e6e3a92 BZ |
168 | { |
169 | if (!ssid1 || !ssid2 || (ssid1->ssid_len != ssid2->ssid_len)) | |
170 | return -1; | |
171 | return memcmp(ssid1->ssid, ssid2->ssid, ssid1->ssid_len); | |
172 | } | |
173 | ||
5e6e3a92 BZ |
174 | /* |
175 | * This function checks if wapi is enabled in driver and scanned network is | |
176 | * compatible with it. | |
177 | */ | |
178 | static bool | |
cff23cec YAP |
179 | mwifiex_is_bss_wapi(struct mwifiex_private *priv, |
180 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 BZ |
181 | { |
182 | if (priv->sec_info.wapi_enabled && | |
183 | (bss_desc->bcn_wapi_ie && | |
184 | ((*(bss_desc->bcn_wapi_ie)).ieee_hdr.element_id == | |
185 | WLAN_EID_BSS_AC_ACCESS_DELAY))) { | |
186 | return true; | |
187 | } | |
188 | return false; | |
189 | } | |
190 | ||
191 | /* | |
192 | * This function checks if driver is configured with no security mode and | |
193 | * scanned network is compatible with it. | |
194 | */ | |
195 | static bool | |
cff23cec YAP |
196 | mwifiex_is_bss_no_sec(struct mwifiex_private *priv, |
197 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 198 | { |
5eb02e44 AK |
199 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
200 | !priv->sec_info.wpa2_enabled && ((!bss_desc->bcn_wpa_ie) || | |
5e6e3a92 | 201 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != |
cff23cec YAP |
202 | WLAN_EID_WPA)) && |
203 | ((!bss_desc->bcn_rsn_ie) || | |
5e6e3a92 | 204 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != |
cff23cec YAP |
205 | WLAN_EID_RSN)) && |
206 | !priv->sec_info.encryption_mode && !bss_desc->privacy) { | |
5e6e3a92 BZ |
207 | return true; |
208 | } | |
209 | return false; | |
210 | } | |
211 | ||
212 | /* | |
213 | * This function checks if static WEP is enabled in driver and scanned network | |
214 | * is compatible with it. | |
215 | */ | |
216 | static bool | |
cff23cec YAP |
217 | mwifiex_is_bss_static_wep(struct mwifiex_private *priv, |
218 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 219 | { |
5eb02e44 AK |
220 | if (priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
221 | !priv->sec_info.wpa2_enabled && bss_desc->privacy) { | |
5e6e3a92 BZ |
222 | return true; |
223 | } | |
224 | return false; | |
225 | } | |
226 | ||
227 | /* | |
228 | * This function checks if wpa is enabled in driver and scanned network is | |
229 | * compatible with it. | |
230 | */ | |
231 | static bool | |
cff23cec YAP |
232 | mwifiex_is_bss_wpa(struct mwifiex_private *priv, |
233 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 234 | { |
5eb02e44 AK |
235 | if (!priv->sec_info.wep_enabled && priv->sec_info.wpa_enabled && |
236 | !priv->sec_info.wpa2_enabled && ((bss_desc->bcn_wpa_ie) && | |
237 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id == WLAN_EID_WPA)) | |
5e6e3a92 BZ |
238 | /* |
239 | * Privacy bit may NOT be set in some APs like | |
240 | * LinkSys WRT54G && bss_desc->privacy | |
241 | */ | |
242 | ) { | |
7c6fa2a8 | 243 | dev_dbg(priv->adapter->dev, "info: %s: WPA:" |
5e6e3a92 | 244 | " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " |
7c6fa2a8 | 245 | "EncMode=%#x privacy=%#x\n", __func__, |
5e6e3a92 BZ |
246 | (bss_desc->bcn_wpa_ie) ? |
247 | (*(bss_desc->bcn_wpa_ie)). | |
248 | vend_hdr.element_id : 0, | |
249 | (bss_desc->bcn_rsn_ie) ? | |
250 | (*(bss_desc->bcn_rsn_ie)). | |
251 | ieee_hdr.element_id : 0, | |
5eb02e44 | 252 | (priv->sec_info.wep_enabled) ? "e" : "d", |
5e6e3a92 BZ |
253 | (priv->sec_info.wpa_enabled) ? "e" : "d", |
254 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
255 | priv->sec_info.encryption_mode, | |
256 | bss_desc->privacy); | |
257 | return true; | |
258 | } | |
259 | return false; | |
260 | } | |
261 | ||
262 | /* | |
263 | * This function checks if wpa2 is enabled in driver and scanned network is | |
264 | * compatible with it. | |
265 | */ | |
266 | static bool | |
cff23cec YAP |
267 | mwifiex_is_bss_wpa2(struct mwifiex_private *priv, |
268 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 269 | { |
cff23cec YAP |
270 | if (!priv->sec_info.wep_enabled && |
271 | !priv->sec_info.wpa_enabled && | |
272 | priv->sec_info.wpa2_enabled && | |
273 | ((bss_desc->bcn_rsn_ie) && | |
274 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id == WLAN_EID_RSN))) { | |
275 | /* | |
276 | * Privacy bit may NOT be set in some APs like | |
277 | * LinkSys WRT54G && bss_desc->privacy | |
278 | */ | |
7c6fa2a8 | 279 | dev_dbg(priv->adapter->dev, "info: %s: WPA2: " |
5e6e3a92 | 280 | " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " |
7c6fa2a8 | 281 | "EncMode=%#x privacy=%#x\n", __func__, |
5e6e3a92 BZ |
282 | (bss_desc->bcn_wpa_ie) ? |
283 | (*(bss_desc->bcn_wpa_ie)). | |
284 | vend_hdr.element_id : 0, | |
285 | (bss_desc->bcn_rsn_ie) ? | |
286 | (*(bss_desc->bcn_rsn_ie)). | |
287 | ieee_hdr.element_id : 0, | |
5eb02e44 | 288 | (priv->sec_info.wep_enabled) ? "e" : "d", |
5e6e3a92 BZ |
289 | (priv->sec_info.wpa_enabled) ? "e" : "d", |
290 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
291 | priv->sec_info.encryption_mode, | |
292 | bss_desc->privacy); | |
293 | return true; | |
294 | } | |
295 | return false; | |
296 | } | |
297 | ||
298 | /* | |
299 | * This function checks if adhoc AES is enabled in driver and scanned network is | |
300 | * compatible with it. | |
301 | */ | |
302 | static bool | |
cff23cec YAP |
303 | mwifiex_is_bss_adhoc_aes(struct mwifiex_private *priv, |
304 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 305 | { |
5eb02e44 | 306 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec YAP |
307 | !priv->sec_info.wpa2_enabled && |
308 | ((!bss_desc->bcn_wpa_ie) || | |
309 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != WLAN_EID_WPA)) && | |
310 | ((!bss_desc->bcn_rsn_ie) || | |
311 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != WLAN_EID_RSN)) && | |
312 | !priv->sec_info.encryption_mode && bss_desc->privacy) { | |
5e6e3a92 BZ |
313 | return true; |
314 | } | |
315 | return false; | |
316 | } | |
317 | ||
318 | /* | |
319 | * This function checks if dynamic WEP is enabled in driver and scanned network | |
320 | * is compatible with it. | |
321 | */ | |
322 | static bool | |
cff23cec YAP |
323 | mwifiex_is_bss_dynamic_wep(struct mwifiex_private *priv, |
324 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 325 | { |
5eb02e44 | 326 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec YAP |
327 | !priv->sec_info.wpa2_enabled && |
328 | ((!bss_desc->bcn_wpa_ie) || | |
329 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != WLAN_EID_WPA)) && | |
330 | ((!bss_desc->bcn_rsn_ie) || | |
331 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != WLAN_EID_RSN)) && | |
332 | priv->sec_info.encryption_mode && bss_desc->privacy) { | |
5e6e3a92 | 333 | dev_dbg(priv->adapter->dev, "info: %s: dynamic " |
7c6fa2a8 | 334 | "WEP: wpa_ie=%#x wpa2_ie=%#x " |
5e6e3a92 | 335 | "EncMode=%#x privacy=%#x\n", |
7c6fa2a8 | 336 | __func__, |
5e6e3a92 BZ |
337 | (bss_desc->bcn_wpa_ie) ? |
338 | (*(bss_desc->bcn_wpa_ie)). | |
339 | vend_hdr.element_id : 0, | |
340 | (bss_desc->bcn_rsn_ie) ? | |
341 | (*(bss_desc->bcn_rsn_ie)). | |
342 | ieee_hdr.element_id : 0, | |
343 | priv->sec_info.encryption_mode, | |
344 | bss_desc->privacy); | |
345 | return true; | |
346 | } | |
347 | return false; | |
348 | } | |
349 | ||
350 | /* | |
351 | * This function checks if a scanned network is compatible with the driver | |
352 | * settings. | |
353 | * | |
354 | * WEP WPA WPA2 ad-hoc encrypt Network | |
355 | * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible | |
356 | * 0 0 0 0 NONE 0 0 0 yes No security | |
357 | * 0 1 0 0 x 1x 1 x yes WPA (disable | |
358 | * HT if no AES) | |
359 | * 0 0 1 0 x 1x x 1 yes WPA2 (disable | |
360 | * HT if no AES) | |
361 | * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES | |
362 | * 1 0 0 0 NONE 1 0 0 yes Static WEP | |
363 | * (disable HT) | |
364 | * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP | |
365 | * | |
366 | * Compatibility is not matched while roaming, except for mode. | |
367 | */ | |
368 | static s32 | |
7c6fa2a8 AK |
369 | mwifiex_is_network_compatible(struct mwifiex_private *priv, |
370 | struct mwifiex_bssdescriptor *bss_desc, u32 mode) | |
5e6e3a92 BZ |
371 | { |
372 | struct mwifiex_adapter *adapter = priv->adapter; | |
5e6e3a92 | 373 | |
5e6e3a92 BZ |
374 | bss_desc->disable_11n = false; |
375 | ||
376 | /* Don't check for compatibility if roaming */ | |
cff23cec YAP |
377 | if (priv->media_connected && |
378 | (priv->bss_mode == NL80211_IFTYPE_STATION) && | |
379 | (bss_desc->bss_mode == NL80211_IFTYPE_STATION)) | |
7c6fa2a8 | 380 | return 0; |
5e6e3a92 BZ |
381 | |
382 | if (priv->wps.session_enable) { | |
383 | dev_dbg(adapter->dev, | |
384 | "info: return success directly in WPS period\n"); | |
7c6fa2a8 | 385 | return 0; |
5e6e3a92 BZ |
386 | } |
387 | ||
cff23cec | 388 | if (mwifiex_is_bss_wapi(priv, bss_desc)) { |
5e6e3a92 | 389 | dev_dbg(adapter->dev, "info: return success for WAPI AP\n"); |
7c6fa2a8 | 390 | return 0; |
5e6e3a92 BZ |
391 | } |
392 | ||
393 | if (bss_desc->bss_mode == mode) { | |
cff23cec | 394 | if (mwifiex_is_bss_no_sec(priv, bss_desc)) { |
5e6e3a92 | 395 | /* No security */ |
7c6fa2a8 | 396 | return 0; |
cff23cec | 397 | } else if (mwifiex_is_bss_static_wep(priv, bss_desc)) { |
5e6e3a92 BZ |
398 | /* Static WEP enabled */ |
399 | dev_dbg(adapter->dev, "info: Disable 11n in WEP mode.\n"); | |
400 | bss_desc->disable_11n = true; | |
7c6fa2a8 | 401 | return 0; |
cff23cec | 402 | } else if (mwifiex_is_bss_wpa(priv, bss_desc)) { |
5e6e3a92 | 403 | /* WPA enabled */ |
cff23cec YAP |
404 | if (((priv->adapter->config_bands & BAND_GN || |
405 | priv->adapter->config_bands & BAND_AN) && | |
406 | bss_desc->bcn_ht_cap) && | |
407 | !mwifiex_is_wpa_oui_present(bss_desc, | |
408 | CIPHER_SUITE_CCMP)) { | |
409 | ||
410 | if (mwifiex_is_wpa_oui_present | |
411 | (bss_desc, CIPHER_SUITE_TKIP)) { | |
5e6e3a92 BZ |
412 | dev_dbg(adapter->dev, |
413 | "info: Disable 11n if AES " | |
414 | "is not supported by AP\n"); | |
415 | bss_desc->disable_11n = true; | |
416 | } else { | |
417 | return -1; | |
418 | } | |
419 | } | |
7c6fa2a8 | 420 | return 0; |
cff23cec | 421 | } else if (mwifiex_is_bss_wpa2(priv, bss_desc)) { |
5e6e3a92 | 422 | /* WPA2 enabled */ |
cff23cec YAP |
423 | if (((priv->adapter->config_bands & BAND_GN || |
424 | priv->adapter->config_bands & BAND_AN) && | |
425 | bss_desc->bcn_ht_cap) && | |
426 | !mwifiex_is_rsn_oui_present(bss_desc, | |
427 | CIPHER_SUITE_CCMP)) { | |
428 | ||
429 | if (mwifiex_is_rsn_oui_present | |
430 | (bss_desc, CIPHER_SUITE_TKIP)) { | |
5e6e3a92 BZ |
431 | dev_dbg(adapter->dev, |
432 | "info: Disable 11n if AES " | |
433 | "is not supported by AP\n"); | |
434 | bss_desc->disable_11n = true; | |
435 | } else { | |
436 | return -1; | |
437 | } | |
438 | } | |
7c6fa2a8 | 439 | return 0; |
cff23cec | 440 | } else if (mwifiex_is_bss_adhoc_aes(priv, bss_desc)) { |
5e6e3a92 | 441 | /* Ad-hoc AES enabled */ |
7c6fa2a8 | 442 | return 0; |
cff23cec | 443 | } else if (mwifiex_is_bss_dynamic_wep(priv, bss_desc)) { |
5e6e3a92 | 444 | /* Dynamic WEP enabled */ |
7c6fa2a8 | 445 | return 0; |
5e6e3a92 BZ |
446 | } |
447 | ||
448 | /* Security doesn't match */ | |
cff23cec YAP |
449 | dev_dbg(adapter->dev, |
450 | "info: %s: failed: wpa_ie=%#x wpa2_ie=%#x WEP=%s " | |
451 | "WPA=%s WPA2=%s EncMode=%#x privacy=%#x\n", __func__, | |
452 | (bss_desc->bcn_wpa_ie) ? | |
453 | (*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id : 0, | |
454 | (bss_desc->bcn_rsn_ie) ? | |
455 | (*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id : 0, | |
456 | (priv->sec_info.wep_enabled) ? "e" : "d", | |
457 | (priv->sec_info.wpa_enabled) ? "e" : "d", | |
458 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
459 | priv->sec_info.encryption_mode, bss_desc->privacy); | |
5e6e3a92 BZ |
460 | return -1; |
461 | } | |
462 | ||
463 | /* Mode doesn't match */ | |
464 | return -1; | |
465 | } | |
466 | ||
5e6e3a92 BZ |
467 | /* |
468 | * This function creates a channel list for the driver to scan, based | |
469 | * on region/band information. | |
470 | * | |
471 | * This routine is used for any scan that is not provided with a | |
472 | * specific channel list to scan. | |
473 | */ | |
474 | static void | |
475 | mwifiex_scan_create_channel_list(struct mwifiex_private *priv, | |
cff23cec YAP |
476 | const struct mwifiex_user_scan_cfg |
477 | *user_scan_in, | |
478 | struct mwifiex_chan_scan_param_set | |
479 | *scan_chan_list, | |
480 | u8 filtered_scan) | |
5e6e3a92 BZ |
481 | { |
482 | enum ieee80211_band band; | |
483 | struct ieee80211_supported_band *sband; | |
484 | struct ieee80211_channel *ch; | |
485 | struct mwifiex_adapter *adapter = priv->adapter; | |
486 | int chan_idx = 0, i; | |
5e6e3a92 BZ |
487 | |
488 | for (band = 0; (band < IEEE80211_NUM_BANDS) ; band++) { | |
489 | ||
490 | if (!priv->wdev->wiphy->bands[band]) | |
491 | continue; | |
492 | ||
493 | sband = priv->wdev->wiphy->bands[band]; | |
494 | ||
d06b7b9e | 495 | for (i = 0; (i < sband->n_channels) ; i++) { |
5e6e3a92 BZ |
496 | ch = &sband->channels[i]; |
497 | if (ch->flags & IEEE80211_CHAN_DISABLED) | |
498 | continue; | |
499 | scan_chan_list[chan_idx].radio_type = band; | |
186630c2 | 500 | |
5e6e3a92 | 501 | if (user_scan_in && |
cff23cec | 502 | user_scan_in->chan_list[0].scan_time) |
5e6e3a92 BZ |
503 | scan_chan_list[chan_idx].max_scan_time = |
504 | cpu_to_le16((u16) user_scan_in-> | |
505 | chan_list[0].scan_time); | |
186630c2 | 506 | else if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
5e6e3a92 BZ |
507 | scan_chan_list[chan_idx].max_scan_time = |
508 | cpu_to_le16(adapter->passive_scan_time); | |
509 | else | |
510 | scan_chan_list[chan_idx].max_scan_time = | |
511 | cpu_to_le16(adapter->active_scan_time); | |
186630c2 AK |
512 | |
513 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
5e6e3a92 BZ |
514 | scan_chan_list[chan_idx].chan_scan_mode_bitmap |
515 | |= MWIFIEX_PASSIVE_SCAN; | |
516 | else | |
517 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
518 | &= ~MWIFIEX_PASSIVE_SCAN; | |
519 | scan_chan_list[chan_idx].chan_number = | |
520 | (u32) ch->hw_value; | |
521 | if (filtered_scan) { | |
522 | scan_chan_list[chan_idx].max_scan_time = | |
523 | cpu_to_le16(adapter->specific_scan_time); | |
524 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
525 | |= MWIFIEX_DISABLE_CHAN_FILT; | |
526 | } | |
d06b7b9e | 527 | chan_idx++; |
5e6e3a92 BZ |
528 | } |
529 | ||
530 | } | |
531 | } | |
532 | ||
533 | /* | |
534 | * This function constructs and sends multiple scan config commands to | |
535 | * the firmware. | |
536 | * | |
537 | * Previous routines in the code flow have created a scan command configuration | |
538 | * with any requested TLVs. This function splits the channel TLV into maximum | |
539 | * channels supported per scan lists and sends the portion of the channel TLV, | |
540 | * along with the other TLVs, to the firmware. | |
541 | */ | |
542 | static int | |
600f5d90 | 543 | mwifiex_scan_channel_list(struct mwifiex_private *priv, |
5e6e3a92 BZ |
544 | u32 max_chan_per_scan, u8 filtered_scan, |
545 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
546 | struct mwifiex_ie_types_chan_list_param_set | |
547 | *chan_tlv_out, | |
548 | struct mwifiex_chan_scan_param_set *scan_chan_list) | |
549 | { | |
550 | int ret = 0; | |
551 | struct mwifiex_chan_scan_param_set *tmp_chan_list; | |
552 | struct mwifiex_chan_scan_param_set *start_chan; | |
553 | ||
554 | u32 tlv_idx; | |
555 | u32 total_scan_time; | |
556 | u32 done_early; | |
557 | ||
558 | if (!scan_cfg_out || !chan_tlv_out || !scan_chan_list) { | |
559 | dev_dbg(priv->adapter->dev, | |
560 | "info: Scan: Null detect: %p, %p, %p\n", | |
561 | scan_cfg_out, chan_tlv_out, scan_chan_list); | |
562 | return -1; | |
563 | } | |
564 | ||
565 | chan_tlv_out->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); | |
566 | ||
567 | /* Set the temp channel struct pointer to the start of the desired | |
568 | list */ | |
569 | tmp_chan_list = scan_chan_list; | |
570 | ||
571 | /* Loop through the desired channel list, sending a new firmware scan | |
572 | commands for each max_chan_per_scan channels (or for 1,6,11 | |
573 | individually if configured accordingly) */ | |
574 | while (tmp_chan_list->chan_number) { | |
575 | ||
576 | tlv_idx = 0; | |
577 | total_scan_time = 0; | |
578 | chan_tlv_out->header.len = 0; | |
579 | start_chan = tmp_chan_list; | |
580 | done_early = false; | |
581 | ||
582 | /* | |
583 | * Construct the Channel TLV for the scan command. Continue to | |
584 | * insert channel TLVs until: | |
585 | * - the tlv_idx hits the maximum configured per scan command | |
586 | * - the next channel to insert is 0 (end of desired channel | |
587 | * list) | |
588 | * - done_early is set (controlling individual scanning of | |
589 | * 1,6,11) | |
590 | */ | |
cff23cec YAP |
591 | while (tlv_idx < max_chan_per_scan && |
592 | tmp_chan_list->chan_number && !done_early) { | |
5e6e3a92 BZ |
593 | |
594 | dev_dbg(priv->adapter->dev, | |
595 | "info: Scan: Chan(%3d), Radio(%d)," | |
596 | " Mode(%d, %d), Dur(%d)\n", | |
cff23cec YAP |
597 | tmp_chan_list->chan_number, |
598 | tmp_chan_list->radio_type, | |
599 | tmp_chan_list->chan_scan_mode_bitmap | |
600 | & MWIFIEX_PASSIVE_SCAN, | |
601 | (tmp_chan_list->chan_scan_mode_bitmap | |
602 | & MWIFIEX_DISABLE_CHAN_FILT) >> 1, | |
603 | le16_to_cpu(tmp_chan_list->max_scan_time)); | |
5e6e3a92 BZ |
604 | |
605 | /* Copy the current channel TLV to the command being | |
606 | prepared */ | |
607 | memcpy(chan_tlv_out->chan_scan_param + tlv_idx, | |
608 | tmp_chan_list, | |
609 | sizeof(chan_tlv_out->chan_scan_param)); | |
610 | ||
611 | /* Increment the TLV header length by the size | |
612 | appended */ | |
613 | chan_tlv_out->header.len = | |
614 | cpu_to_le16(le16_to_cpu(chan_tlv_out->header.len) + | |
615 | (sizeof(chan_tlv_out->chan_scan_param))); | |
616 | ||
617 | /* | |
618 | * The tlv buffer length is set to the number of bytes | |
619 | * of the between the channel tlv pointer and the start | |
620 | * of the tlv buffer. This compensates for any TLVs | |
621 | * that were appended before the channel list. | |
622 | */ | |
623 | scan_cfg_out->tlv_buf_len = (u32) ((u8 *) chan_tlv_out - | |
624 | scan_cfg_out->tlv_buf); | |
625 | ||
626 | /* Add the size of the channel tlv header and the data | |
627 | length */ | |
628 | scan_cfg_out->tlv_buf_len += | |
629 | (sizeof(chan_tlv_out->header) | |
630 | + le16_to_cpu(chan_tlv_out->header.len)); | |
631 | ||
632 | /* Increment the index to the channel tlv we are | |
633 | constructing */ | |
634 | tlv_idx++; | |
635 | ||
636 | /* Count the total scan time per command */ | |
637 | total_scan_time += | |
638 | le16_to_cpu(tmp_chan_list->max_scan_time); | |
639 | ||
640 | done_early = false; | |
641 | ||
642 | /* Stop the loop if the *current* channel is in the | |
643 | 1,6,11 set and we are not filtering on a BSSID | |
644 | or SSID. */ | |
cff23cec YAP |
645 | if (!filtered_scan && |
646 | (tmp_chan_list->chan_number == 1 || | |
647 | tmp_chan_list->chan_number == 6 || | |
648 | tmp_chan_list->chan_number == 11)) | |
5e6e3a92 BZ |
649 | done_early = true; |
650 | ||
651 | /* Increment the tmp pointer to the next channel to | |
652 | be scanned */ | |
653 | tmp_chan_list++; | |
654 | ||
655 | /* Stop the loop if the *next* channel is in the 1,6,11 | |
656 | set. This will cause it to be the only channel | |
657 | scanned on the next interation */ | |
cff23cec YAP |
658 | if (!filtered_scan && |
659 | (tmp_chan_list->chan_number == 1 || | |
660 | tmp_chan_list->chan_number == 6 || | |
661 | tmp_chan_list->chan_number == 11)) | |
5e6e3a92 BZ |
662 | done_early = true; |
663 | } | |
664 | ||
665 | /* The total scan time should be less than scan command timeout | |
666 | value */ | |
667 | if (total_scan_time > MWIFIEX_MAX_TOTAL_SCAN_TIME) { | |
668 | dev_err(priv->adapter->dev, "total scan time %dms" | |
669 | " is over limit (%dms), scan skipped\n", | |
670 | total_scan_time, MWIFIEX_MAX_TOTAL_SCAN_TIME); | |
671 | ret = -1; | |
672 | break; | |
673 | } | |
674 | ||
675 | priv->adapter->scan_channels = start_chan; | |
676 | ||
677 | /* Send the scan command to the firmware with the specified | |
678 | cfg */ | |
600f5d90 AK |
679 | ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11_SCAN, |
680 | HostCmd_ACT_GEN_SET, 0, | |
681 | scan_cfg_out); | |
5e6e3a92 BZ |
682 | if (ret) |
683 | break; | |
684 | } | |
685 | ||
686 | if (ret) | |
687 | return -1; | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
692 | /* | |
693 | * This function constructs a scan command configuration structure to use | |
694 | * in scan commands. | |
695 | * | |
696 | * Application layer or other functions can invoke network scanning | |
697 | * with a scan configuration supplied in a user scan configuration structure. | |
698 | * This structure is used as the basis of one or many scan command configuration | |
699 | * commands that are sent to the command processing module and eventually to the | |
700 | * firmware. | |
701 | * | |
702 | * This function creates a scan command configuration structure based on the | |
703 | * following user supplied parameters (if present): | |
704 | * - SSID filter | |
705 | * - BSSID filter | |
706 | * - Number of Probes to be sent | |
707 | * - Channel list | |
708 | * | |
709 | * If the SSID or BSSID filter is not present, the filter is disabled/cleared. | |
710 | * If the number of probes is not set, adapter default setting is used. | |
711 | */ | |
712 | static void | |
cff23cec YAP |
713 | mwifiex_config_scan(struct mwifiex_private *priv, |
714 | const struct mwifiex_user_scan_cfg *user_scan_in, | |
715 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
716 | struct mwifiex_ie_types_chan_list_param_set **chan_list_out, | |
717 | struct mwifiex_chan_scan_param_set *scan_chan_list, | |
718 | u8 *max_chan_per_scan, u8 *filtered_scan, | |
719 | u8 *scan_current_only) | |
5e6e3a92 BZ |
720 | { |
721 | struct mwifiex_adapter *adapter = priv->adapter; | |
722 | struct mwifiex_ie_types_num_probes *num_probes_tlv; | |
723 | struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv; | |
724 | struct mwifiex_ie_types_rates_param_set *rates_tlv; | |
725 | const u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; | |
726 | u8 *tlv_pos; | |
727 | u32 num_probes; | |
728 | u32 ssid_len; | |
729 | u32 chan_idx; | |
730 | u32 scan_type; | |
731 | u16 scan_dur; | |
732 | u8 channel; | |
733 | u8 radio_type; | |
be0b281e | 734 | int i; |
5e6e3a92 BZ |
735 | u8 ssid_filter; |
736 | u8 rates[MWIFIEX_SUPPORTED_RATES]; | |
737 | u32 rates_size; | |
738 | struct mwifiex_ie_types_htcap *ht_cap; | |
739 | ||
740 | /* The tlv_buf_len is calculated for each scan command. The TLVs added | |
741 | in this routine will be preserved since the routine that sends the | |
742 | command will append channelTLVs at *chan_list_out. The difference | |
743 | between the *chan_list_out and the tlv_buf start will be used to | |
744 | calculate the size of anything we add in this routine. */ | |
745 | scan_cfg_out->tlv_buf_len = 0; | |
746 | ||
747 | /* Running tlv pointer. Assigned to chan_list_out at end of function | |
748 | so later routines know where channels can be added to the command | |
749 | buf */ | |
750 | tlv_pos = scan_cfg_out->tlv_buf; | |
751 | ||
752 | /* Initialize the scan as un-filtered; the flag is later set to TRUE | |
753 | below if a SSID or BSSID filter is sent in the command */ | |
754 | *filtered_scan = false; | |
755 | ||
756 | /* Initialize the scan as not being only on the current channel. If | |
757 | the channel list is customized, only contains one channel, and is | |
758 | the active channel, this is set true and data flow is not halted. */ | |
759 | *scan_current_only = false; | |
760 | ||
761 | if (user_scan_in) { | |
762 | ||
763 | /* Default the ssid_filter flag to TRUE, set false under | |
764 | certain wildcard conditions and qualified by the existence | |
765 | of an SSID list before marking the scan as filtered */ | |
766 | ssid_filter = true; | |
767 | ||
768 | /* Set the BSS type scan filter, use Adapter setting if | |
769 | unset */ | |
770 | scan_cfg_out->bss_mode = | |
771 | (user_scan_in->bss_mode ? (u8) user_scan_in-> | |
772 | bss_mode : (u8) adapter->scan_mode); | |
773 | ||
774 | /* Set the number of probes to send, use Adapter setting | |
775 | if unset */ | |
776 | num_probes = | |
777 | (user_scan_in->num_probes ? user_scan_in-> | |
778 | num_probes : adapter->scan_probes); | |
779 | ||
780 | /* | |
781 | * Set the BSSID filter to the incoming configuration, | |
782 | * if non-zero. If not set, it will remain disabled | |
783 | * (all zeros). | |
784 | */ | |
785 | memcpy(scan_cfg_out->specific_bssid, | |
786 | user_scan_in->specific_bssid, | |
787 | sizeof(scan_cfg_out->specific_bssid)); | |
788 | ||
be0b281e AK |
789 | for (i = 0; i < user_scan_in->num_ssids; i++) { |
790 | ssid_len = user_scan_in->ssid_list[i].ssid_len; | |
5e6e3a92 BZ |
791 | |
792 | wildcard_ssid_tlv = | |
793 | (struct mwifiex_ie_types_wildcard_ssid_params *) | |
794 | tlv_pos; | |
795 | wildcard_ssid_tlv->header.type = | |
796 | cpu_to_le16(TLV_TYPE_WILDCARDSSID); | |
797 | wildcard_ssid_tlv->header.len = cpu_to_le16( | |
798 | (u16) (ssid_len + sizeof(wildcard_ssid_tlv-> | |
799 | max_ssid_length))); | |
fada1058 | 800 | |
be0b281e AK |
801 | /* |
802 | * max_ssid_length = 0 tells firmware to perform | |
803 | * specific scan for the SSID filled, whereas | |
804 | * max_ssid_length = IEEE80211_MAX_SSID_LEN is for | |
805 | * wildcard scan. | |
806 | */ | |
807 | if (ssid_len) | |
808 | wildcard_ssid_tlv->max_ssid_length = 0; | |
809 | else | |
810 | wildcard_ssid_tlv->max_ssid_length = | |
811 | IEEE80211_MAX_SSID_LEN; | |
5e6e3a92 BZ |
812 | |
813 | memcpy(wildcard_ssid_tlv->ssid, | |
be0b281e | 814 | user_scan_in->ssid_list[i].ssid, ssid_len); |
5e6e3a92 BZ |
815 | |
816 | tlv_pos += (sizeof(wildcard_ssid_tlv->header) | |
817 | + le16_to_cpu(wildcard_ssid_tlv->header.len)); | |
818 | ||
be0b281e AK |
819 | dev_dbg(adapter->dev, "info: scan: ssid[%d]: %s, %d\n", |
820 | i, wildcard_ssid_tlv->ssid, | |
5e6e3a92 BZ |
821 | wildcard_ssid_tlv->max_ssid_length); |
822 | ||
823 | /* Empty wildcard ssid with a maxlen will match many or | |
824 | potentially all SSIDs (maxlen == 32), therefore do | |
825 | not treat the scan as | |
826 | filtered. */ | |
827 | if (!ssid_len && wildcard_ssid_tlv->max_ssid_length) | |
828 | ssid_filter = false; | |
5e6e3a92 BZ |
829 | } |
830 | ||
831 | /* | |
832 | * The default number of channels sent in the command is low to | |
833 | * ensure the response buffer from the firmware does not | |
834 | * truncate scan results. That is not an issue with an SSID | |
835 | * or BSSID filter applied to the scan results in the firmware. | |
836 | */ | |
cff23cec YAP |
837 | if ((i && ssid_filter) || |
838 | memcmp(scan_cfg_out->specific_bssid, &zero_mac, | |
839 | sizeof(zero_mac))) | |
5e6e3a92 BZ |
840 | *filtered_scan = true; |
841 | } else { | |
842 | scan_cfg_out->bss_mode = (u8) adapter->scan_mode; | |
843 | num_probes = adapter->scan_probes; | |
844 | } | |
845 | ||
846 | /* | |
847 | * If a specific BSSID or SSID is used, the number of channels in the | |
848 | * scan command will be increased to the absolute maximum. | |
849 | */ | |
850 | if (*filtered_scan) | |
851 | *max_chan_per_scan = MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN; | |
852 | else | |
853 | *max_chan_per_scan = MWIFIEX_CHANNELS_PER_SCAN_CMD; | |
854 | ||
855 | /* If the input config or adapter has the number of Probes set, | |
856 | add tlv */ | |
857 | if (num_probes) { | |
858 | ||
859 | dev_dbg(adapter->dev, "info: scan: num_probes = %d\n", | |
cff23cec | 860 | num_probes); |
5e6e3a92 BZ |
861 | |
862 | num_probes_tlv = (struct mwifiex_ie_types_num_probes *) tlv_pos; | |
863 | num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); | |
864 | num_probes_tlv->header.len = | |
865 | cpu_to_le16(sizeof(num_probes_tlv->num_probes)); | |
866 | num_probes_tlv->num_probes = cpu_to_le16((u16) num_probes); | |
867 | ||
868 | tlv_pos += sizeof(num_probes_tlv->header) + | |
869 | le16_to_cpu(num_probes_tlv->header.len); | |
870 | ||
871 | } | |
872 | ||
873 | /* Append rates tlv */ | |
874 | memset(rates, 0, sizeof(rates)); | |
875 | ||
876 | rates_size = mwifiex_get_supported_rates(priv, rates); | |
877 | ||
878 | rates_tlv = (struct mwifiex_ie_types_rates_param_set *) tlv_pos; | |
879 | rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES); | |
880 | rates_tlv->header.len = cpu_to_le16((u16) rates_size); | |
881 | memcpy(rates_tlv->rates, rates, rates_size); | |
882 | tlv_pos += sizeof(rates_tlv->header) + rates_size; | |
883 | ||
884 | dev_dbg(adapter->dev, "info: SCAN_CMD: Rates size = %d\n", rates_size); | |
885 | ||
cff23cec YAP |
886 | if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) && |
887 | (priv->adapter->config_bands & BAND_GN || | |
888 | priv->adapter->config_bands & BAND_AN)) { | |
5e6e3a92 BZ |
889 | ht_cap = (struct mwifiex_ie_types_htcap *) tlv_pos; |
890 | memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap)); | |
891 | ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); | |
892 | ht_cap->header.len = | |
893 | cpu_to_le16(sizeof(struct ieee80211_ht_cap)); | |
a46b7b5c AK |
894 | radio_type = |
895 | mwifiex_band_to_radio_type(priv->adapter->config_bands); | |
896 | mwifiex_fill_cap_info(priv, radio_type, ht_cap); | |
5e6e3a92 BZ |
897 | tlv_pos += sizeof(struct mwifiex_ie_types_htcap); |
898 | } | |
899 | ||
900 | /* Append vendor specific IE TLV */ | |
901 | mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_SCAN, &tlv_pos); | |
902 | ||
903 | /* | |
904 | * Set the output for the channel TLV to the address in the tlv buffer | |
905 | * past any TLVs that were added in this function (SSID, num_probes). | |
906 | * Channel TLVs will be added past this for each scan command, | |
907 | * preserving the TLVs that were previously added. | |
908 | */ | |
909 | *chan_list_out = | |
910 | (struct mwifiex_ie_types_chan_list_param_set *) tlv_pos; | |
911 | ||
912 | if (user_scan_in && user_scan_in->chan_list[0].chan_number) { | |
913 | ||
914 | dev_dbg(adapter->dev, "info: Scan: Using supplied channel list\n"); | |
915 | ||
916 | for (chan_idx = 0; | |
cff23cec YAP |
917 | chan_idx < MWIFIEX_USER_SCAN_CHAN_MAX && |
918 | user_scan_in->chan_list[chan_idx].chan_number; | |
5e6e3a92 BZ |
919 | chan_idx++) { |
920 | ||
921 | channel = user_scan_in->chan_list[chan_idx].chan_number; | |
922 | (scan_chan_list + chan_idx)->chan_number = channel; | |
923 | ||
924 | radio_type = | |
925 | user_scan_in->chan_list[chan_idx].radio_type; | |
926 | (scan_chan_list + chan_idx)->radio_type = radio_type; | |
927 | ||
928 | scan_type = user_scan_in->chan_list[chan_idx].scan_type; | |
929 | ||
930 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
931 | (scan_chan_list + | |
932 | chan_idx)->chan_scan_mode_bitmap | |
933 | |= MWIFIEX_PASSIVE_SCAN; | |
934 | else | |
935 | (scan_chan_list + | |
936 | chan_idx)->chan_scan_mode_bitmap | |
937 | &= ~MWIFIEX_PASSIVE_SCAN; | |
938 | ||
939 | if (user_scan_in->chan_list[chan_idx].scan_time) { | |
940 | scan_dur = (u16) user_scan_in-> | |
941 | chan_list[chan_idx].scan_time; | |
942 | } else { | |
943 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
944 | scan_dur = adapter->passive_scan_time; | |
945 | else if (*filtered_scan) | |
946 | scan_dur = adapter->specific_scan_time; | |
947 | else | |
948 | scan_dur = adapter->active_scan_time; | |
949 | } | |
950 | ||
951 | (scan_chan_list + chan_idx)->min_scan_time = | |
952 | cpu_to_le16(scan_dur); | |
953 | (scan_chan_list + chan_idx)->max_scan_time = | |
954 | cpu_to_le16(scan_dur); | |
955 | } | |
956 | ||
957 | /* Check if we are only scanning the current channel */ | |
cff23cec YAP |
958 | if ((chan_idx == 1) && |
959 | (user_scan_in->chan_list[0].chan_number == | |
960 | priv->curr_bss_params.bss_descriptor.channel)) { | |
5e6e3a92 BZ |
961 | *scan_current_only = true; |
962 | dev_dbg(adapter->dev, | |
963 | "info: Scan: Scanning current channel only\n"); | |
964 | } | |
965 | ||
966 | } else { | |
967 | dev_dbg(adapter->dev, | |
cff23cec | 968 | "info: Scan: Creating full region channel list\n"); |
5e6e3a92 BZ |
969 | mwifiex_scan_create_channel_list(priv, user_scan_in, |
970 | scan_chan_list, | |
971 | *filtered_scan); | |
972 | } | |
973 | } | |
974 | ||
975 | /* | |
976 | * This function inspects the scan response buffer for pointers to | |
977 | * expected TLVs. | |
978 | * | |
979 | * TLVs can be included at the end of the scan response BSS information. | |
980 | * | |
981 | * Data in the buffer is parsed pointers to TLVs that can potentially | |
982 | * be passed back in the response. | |
983 | */ | |
984 | static void | |
985 | mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter *adapter, | |
986 | struct mwifiex_ie_types_data *tlv, | |
987 | u32 tlv_buf_size, u32 req_tlv_type, | |
988 | struct mwifiex_ie_types_data **tlv_data) | |
989 | { | |
990 | struct mwifiex_ie_types_data *current_tlv; | |
991 | u32 tlv_buf_left; | |
992 | u32 tlv_type; | |
993 | u32 tlv_len; | |
994 | ||
995 | current_tlv = tlv; | |
996 | tlv_buf_left = tlv_buf_size; | |
997 | *tlv_data = NULL; | |
998 | ||
999 | dev_dbg(adapter->dev, "info: SCAN_RESP: tlv_buf_size = %d\n", | |
cff23cec | 1000 | tlv_buf_size); |
5e6e3a92 BZ |
1001 | |
1002 | while (tlv_buf_left >= sizeof(struct mwifiex_ie_types_header)) { | |
1003 | ||
1004 | tlv_type = le16_to_cpu(current_tlv->header.type); | |
1005 | tlv_len = le16_to_cpu(current_tlv->header.len); | |
1006 | ||
1007 | if (sizeof(tlv->header) + tlv_len > tlv_buf_left) { | |
1008 | dev_err(adapter->dev, "SCAN_RESP: TLV buffer corrupt\n"); | |
1009 | break; | |
1010 | } | |
1011 | ||
1012 | if (req_tlv_type == tlv_type) { | |
1013 | switch (tlv_type) { | |
1014 | case TLV_TYPE_TSFTIMESTAMP: | |
1015 | dev_dbg(adapter->dev, "info: SCAN_RESP: TSF " | |
1016 | "timestamp TLV, len = %d\n", tlv_len); | |
1017 | *tlv_data = (struct mwifiex_ie_types_data *) | |
1018 | current_tlv; | |
1019 | break; | |
1020 | case TLV_TYPE_CHANNELBANDLIST: | |
1021 | dev_dbg(adapter->dev, "info: SCAN_RESP: channel" | |
1022 | " band list TLV, len = %d\n", tlv_len); | |
1023 | *tlv_data = (struct mwifiex_ie_types_data *) | |
1024 | current_tlv; | |
1025 | break; | |
1026 | default: | |
1027 | dev_err(adapter->dev, | |
1028 | "SCAN_RESP: unhandled TLV = %d\n", | |
1029 | tlv_type); | |
1030 | /* Give up, this seems corrupted */ | |
1031 | return; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | if (*tlv_data) | |
1036 | break; | |
1037 | ||
1038 | ||
1039 | tlv_buf_left -= (sizeof(tlv->header) + tlv_len); | |
1040 | current_tlv = | |
1041 | (struct mwifiex_ie_types_data *) (current_tlv->data + | |
1042 | tlv_len); | |
1043 | ||
1044 | } /* while */ | |
1045 | } | |
1046 | ||
1047 | /* | |
7c6fa2a8 AK |
1048 | * This function parses provided beacon buffer and updates |
1049 | * respective fields in bss descriptor structure. | |
5e6e3a92 | 1050 | */ |
7c6fa2a8 AK |
1051 | int |
1052 | mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter, | |
1053 | struct mwifiex_bssdescriptor *bss_entry, | |
1054 | u8 *ie_buf, u32 ie_len) | |
5e6e3a92 BZ |
1055 | { |
1056 | int ret = 0; | |
1057 | u8 element_id; | |
1058 | struct ieee_types_fh_param_set *fh_param_set; | |
1059 | struct ieee_types_ds_param_set *ds_param_set; | |
1060 | struct ieee_types_cf_param_set *cf_param_set; | |
1061 | struct ieee_types_ibss_param_set *ibss_param_set; | |
5e6e3a92 BZ |
1062 | u8 *current_ptr; |
1063 | u8 *rate; | |
1064 | u8 element_len; | |
1065 | u16 total_ie_len; | |
1066 | u8 bytes_to_copy; | |
1067 | u8 rate_size; | |
5e6e3a92 | 1068 | u8 found_data_rate_ie; |
7c6fa2a8 | 1069 | u32 bytes_left; |
5e6e3a92 BZ |
1070 | struct ieee_types_vendor_specific *vendor_ie; |
1071 | const u8 wpa_oui[4] = { 0x00, 0x50, 0xf2, 0x01 }; | |
1072 | const u8 wmm_oui[4] = { 0x00, 0x50, 0xf2, 0x02 }; | |
1073 | ||
1074 | found_data_rate_ie = false; | |
1075 | rate_size = 0; | |
7c6fa2a8 AK |
1076 | current_ptr = ie_buf; |
1077 | bytes_left = ie_len; | |
1078 | bss_entry->beacon_buf = ie_buf; | |
1079 | bss_entry->beacon_buf_size = ie_len; | |
5e6e3a92 BZ |
1080 | |
1081 | /* Process variable IE */ | |
7c6fa2a8 | 1082 | while (bytes_left >= 2) { |
5e6e3a92 BZ |
1083 | element_id = *current_ptr; |
1084 | element_len = *(current_ptr + 1); | |
1085 | total_ie_len = element_len + sizeof(struct ieee_types_header); | |
1086 | ||
7c6fa2a8 | 1087 | if (bytes_left < total_ie_len) { |
5e6e3a92 BZ |
1088 | dev_err(adapter->dev, "err: InterpretIE: in processing" |
1089 | " IE, bytes left < IE length\n"); | |
7c6fa2a8 | 1090 | return -1; |
5e6e3a92 BZ |
1091 | } |
1092 | switch (element_id) { | |
1093 | case WLAN_EID_SSID: | |
1094 | bss_entry->ssid.ssid_len = element_len; | |
1095 | memcpy(bss_entry->ssid.ssid, (current_ptr + 2), | |
1096 | element_len); | |
cff23cec YAP |
1097 | dev_dbg(adapter->dev, |
1098 | "info: InterpretIE: ssid: %-32s\n", | |
1099 | bss_entry->ssid.ssid); | |
5e6e3a92 BZ |
1100 | break; |
1101 | ||
1102 | case WLAN_EID_SUPP_RATES: | |
1103 | memcpy(bss_entry->data_rates, current_ptr + 2, | |
1104 | element_len); | |
1105 | memcpy(bss_entry->supported_rates, current_ptr + 2, | |
1106 | element_len); | |
1107 | rate_size = element_len; | |
1108 | found_data_rate_ie = true; | |
1109 | break; | |
1110 | ||
1111 | case WLAN_EID_FH_PARAMS: | |
1112 | fh_param_set = | |
1113 | (struct ieee_types_fh_param_set *) current_ptr; | |
1114 | memcpy(&bss_entry->phy_param_set.fh_param_set, | |
1115 | fh_param_set, | |
1116 | sizeof(struct ieee_types_fh_param_set)); | |
1117 | break; | |
1118 | ||
1119 | case WLAN_EID_DS_PARAMS: | |
1120 | ds_param_set = | |
1121 | (struct ieee_types_ds_param_set *) current_ptr; | |
1122 | ||
1123 | bss_entry->channel = ds_param_set->current_chan; | |
1124 | ||
1125 | memcpy(&bss_entry->phy_param_set.ds_param_set, | |
1126 | ds_param_set, | |
1127 | sizeof(struct ieee_types_ds_param_set)); | |
1128 | break; | |
1129 | ||
1130 | case WLAN_EID_CF_PARAMS: | |
1131 | cf_param_set = | |
1132 | (struct ieee_types_cf_param_set *) current_ptr; | |
1133 | memcpy(&bss_entry->ss_param_set.cf_param_set, | |
1134 | cf_param_set, | |
1135 | sizeof(struct ieee_types_cf_param_set)); | |
1136 | break; | |
1137 | ||
1138 | case WLAN_EID_IBSS_PARAMS: | |
1139 | ibss_param_set = | |
1140 | (struct ieee_types_ibss_param_set *) | |
1141 | current_ptr; | |
1142 | memcpy(&bss_entry->ss_param_set.ibss_param_set, | |
1143 | ibss_param_set, | |
1144 | sizeof(struct ieee_types_ibss_param_set)); | |
1145 | break; | |
1146 | ||
1147 | case WLAN_EID_ERP_INFO: | |
1148 | bss_entry->erp_flags = *(current_ptr + 2); | |
1149 | break; | |
1150 | ||
1151 | case WLAN_EID_EXT_SUPP_RATES: | |
1152 | /* | |
1153 | * Only process extended supported rate | |
1154 | * if data rate is already found. | |
1155 | * Data rate IE should come before | |
1156 | * extended supported rate IE | |
1157 | */ | |
1158 | if (found_data_rate_ie) { | |
1159 | if ((element_len + rate_size) > | |
1160 | MWIFIEX_SUPPORTED_RATES) | |
1161 | bytes_to_copy = | |
1162 | (MWIFIEX_SUPPORTED_RATES - | |
1163 | rate_size); | |
1164 | else | |
1165 | bytes_to_copy = element_len; | |
1166 | ||
1167 | rate = (u8 *) bss_entry->data_rates; | |
1168 | rate += rate_size; | |
1169 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1170 | ||
1171 | rate = (u8 *) bss_entry->supported_rates; | |
1172 | rate += rate_size; | |
1173 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1174 | } | |
1175 | break; | |
1176 | ||
1177 | case WLAN_EID_VENDOR_SPECIFIC: | |
1178 | vendor_ie = (struct ieee_types_vendor_specific *) | |
1179 | current_ptr; | |
1180 | ||
1181 | if (!memcmp | |
1182 | (vendor_ie->vend_hdr.oui, wpa_oui, | |
1183 | sizeof(wpa_oui))) { | |
1184 | bss_entry->bcn_wpa_ie = | |
1185 | (struct ieee_types_vendor_specific *) | |
1186 | current_ptr; | |
cff23cec YAP |
1187 | bss_entry->wpa_offset = (u16) |
1188 | (current_ptr - bss_entry->beacon_buf); | |
5e6e3a92 BZ |
1189 | } else if (!memcmp(vendor_ie->vend_hdr.oui, wmm_oui, |
1190 | sizeof(wmm_oui))) { | |
1191 | if (total_ie_len == | |
cff23cec YAP |
1192 | sizeof(struct ieee_types_wmm_parameter) || |
1193 | total_ie_len == | |
5e6e3a92 BZ |
1194 | sizeof(struct ieee_types_wmm_info)) |
1195 | /* | |
1196 | * Only accept and copy the WMM IE if | |
1197 | * it matches the size expected for the | |
1198 | * WMM Info IE or the WMM Parameter IE. | |
1199 | */ | |
1200 | memcpy((u8 *) &bss_entry->wmm_ie, | |
1201 | current_ptr, total_ie_len); | |
1202 | } | |
1203 | break; | |
1204 | case WLAN_EID_RSN: | |
1205 | bss_entry->bcn_rsn_ie = | |
1206 | (struct ieee_types_generic *) current_ptr; | |
1207 | bss_entry->rsn_offset = (u16) (current_ptr - | |
1208 | bss_entry->beacon_buf); | |
1209 | break; | |
1210 | case WLAN_EID_BSS_AC_ACCESS_DELAY: | |
1211 | bss_entry->bcn_wapi_ie = | |
1212 | (struct ieee_types_generic *) current_ptr; | |
1213 | bss_entry->wapi_offset = (u16) (current_ptr - | |
1214 | bss_entry->beacon_buf); | |
1215 | break; | |
1216 | case WLAN_EID_HT_CAPABILITY: | |
1217 | bss_entry->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
1218 | (current_ptr + | |
1219 | sizeof(struct ieee_types_header)); | |
1220 | bss_entry->ht_cap_offset = (u16) (current_ptr + | |
1221 | sizeof(struct ieee_types_header) - | |
1222 | bss_entry->beacon_buf); | |
1223 | break; | |
1224 | case WLAN_EID_HT_INFORMATION: | |
1225 | bss_entry->bcn_ht_info = (struct ieee80211_ht_info *) | |
1226 | (current_ptr + | |
1227 | sizeof(struct ieee_types_header)); | |
1228 | bss_entry->ht_info_offset = (u16) (current_ptr + | |
1229 | sizeof(struct ieee_types_header) - | |
1230 | bss_entry->beacon_buf); | |
1231 | break; | |
1232 | case WLAN_EID_BSS_COEX_2040: | |
1233 | bss_entry->bcn_bss_co_2040 = (u8 *) (current_ptr + | |
1234 | sizeof(struct ieee_types_header)); | |
1235 | bss_entry->bss_co_2040_offset = (u16) (current_ptr + | |
1236 | sizeof(struct ieee_types_header) - | |
1237 | bss_entry->beacon_buf); | |
1238 | break; | |
1239 | case WLAN_EID_EXT_CAPABILITY: | |
1240 | bss_entry->bcn_ext_cap = (u8 *) (current_ptr + | |
1241 | sizeof(struct ieee_types_header)); | |
1242 | bss_entry->ext_cap_offset = (u16) (current_ptr + | |
1243 | sizeof(struct ieee_types_header) - | |
1244 | bss_entry->beacon_buf); | |
1245 | break; | |
5e6e3a92 BZ |
1246 | default: |
1247 | break; | |
1248 | } | |
1249 | ||
1250 | current_ptr += element_len + 2; | |
1251 | ||
1252 | /* Need to account for IE ID and IE Len */ | |
7c6fa2a8 | 1253 | bytes_left -= (element_len + 2); |
5e6e3a92 | 1254 | |
7c6fa2a8 | 1255 | } /* while (bytes_left > 2) */ |
5e6e3a92 BZ |
1256 | return ret; |
1257 | } | |
1258 | ||
5e6e3a92 BZ |
1259 | /* |
1260 | * This function converts radio type scan parameter to a band configuration | |
1261 | * to be used in join command. | |
1262 | */ | |
1263 | static u8 | |
1264 | mwifiex_radio_type_to_band(u8 radio_type) | |
1265 | { | |
5e6e3a92 BZ |
1266 | switch (radio_type) { |
1267 | case HostCmd_SCAN_RADIO_TYPE_A: | |
636c4598 | 1268 | return BAND_A; |
5e6e3a92 BZ |
1269 | case HostCmd_SCAN_RADIO_TYPE_BG: |
1270 | default: | |
636c4598 | 1271 | return BAND_G; |
5e6e3a92 | 1272 | } |
5e6e3a92 BZ |
1273 | } |
1274 | ||
5e6e3a92 BZ |
1275 | /* |
1276 | * This is an internal function used to start a scan based on an input | |
1277 | * configuration. | |
1278 | * | |
1279 | * This uses the input user scan configuration information when provided in | |
1280 | * order to send the appropriate scan commands to firmware to populate or | |
1281 | * update the internal driver scan table. | |
1282 | */ | |
711825a0 AK |
1283 | static int mwifiex_scan_networks(struct mwifiex_private *priv, |
1284 | const struct mwifiex_user_scan_cfg *user_scan_in) | |
5e6e3a92 BZ |
1285 | { |
1286 | int ret = 0; | |
1287 | struct mwifiex_adapter *adapter = priv->adapter; | |
270e58e8 YAP |
1288 | struct cmd_ctrl_node *cmd_node; |
1289 | union mwifiex_scan_cmd_config_tlv *scan_cfg_out; | |
5e6e3a92 BZ |
1290 | struct mwifiex_ie_types_chan_list_param_set *chan_list_out; |
1291 | u32 buf_size; | |
1292 | struct mwifiex_chan_scan_param_set *scan_chan_list; | |
5e6e3a92 BZ |
1293 | u8 filtered_scan; |
1294 | u8 scan_current_chan_only; | |
1295 | u8 max_chan_per_scan; | |
1296 | unsigned long flags; | |
1297 | ||
600f5d90 | 1298 | if (adapter->scan_processing) { |
5e6e3a92 BZ |
1299 | dev_dbg(adapter->dev, "cmd: Scan already in process...\n"); |
1300 | return ret; | |
1301 | } | |
1302 | ||
1303 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1304 | adapter->scan_processing = true; | |
1305 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1306 | ||
600f5d90 | 1307 | if (priv->scan_block) { |
5e6e3a92 BZ |
1308 | dev_dbg(adapter->dev, |
1309 | "cmd: Scan is blocked during association...\n"); | |
1310 | return ret; | |
1311 | } | |
1312 | ||
1313 | scan_cfg_out = kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv), | |
cff23cec | 1314 | GFP_KERNEL); |
5e6e3a92 BZ |
1315 | if (!scan_cfg_out) { |
1316 | dev_err(adapter->dev, "failed to alloc scan_cfg_out\n"); | |
b53575ec | 1317 | return -ENOMEM; |
5e6e3a92 BZ |
1318 | } |
1319 | ||
1320 | buf_size = sizeof(struct mwifiex_chan_scan_param_set) * | |
cff23cec | 1321 | MWIFIEX_USER_SCAN_CHAN_MAX; |
5e6e3a92 BZ |
1322 | scan_chan_list = kzalloc(buf_size, GFP_KERNEL); |
1323 | if (!scan_chan_list) { | |
1324 | dev_err(adapter->dev, "failed to alloc scan_chan_list\n"); | |
1325 | kfree(scan_cfg_out); | |
b53575ec | 1326 | return -ENOMEM; |
5e6e3a92 BZ |
1327 | } |
1328 | ||
cff23cec YAP |
1329 | mwifiex_config_scan(priv, user_scan_in, &scan_cfg_out->config, |
1330 | &chan_list_out, scan_chan_list, &max_chan_per_scan, | |
1331 | &filtered_scan, &scan_current_chan_only); | |
5e6e3a92 | 1332 | |
600f5d90 AK |
1333 | ret = mwifiex_scan_channel_list(priv, max_chan_per_scan, filtered_scan, |
1334 | &scan_cfg_out->config, chan_list_out, | |
1335 | scan_chan_list); | |
5e6e3a92 BZ |
1336 | |
1337 | /* Get scan command from scan_pending_q and put to cmd_pending_q */ | |
1338 | if (!ret) { | |
1339 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1340 | if (!list_empty(&adapter->scan_pending_q)) { | |
1341 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
cff23cec | 1342 | struct cmd_ctrl_node, list); |
5e6e3a92 BZ |
1343 | list_del(&cmd_node->list); |
1344 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
cff23cec | 1345 | flags); |
efaaa8b8 | 1346 | adapter->cmd_queued = cmd_node; |
5e6e3a92 BZ |
1347 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, |
1348 | true); | |
1349 | } else { | |
1350 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
1351 | flags); | |
1352 | } | |
5e6e3a92 BZ |
1353 | } else { |
1354 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1355 | adapter->scan_processing = true; | |
1356 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1357 | } | |
1358 | ||
1359 | kfree(scan_cfg_out); | |
1360 | kfree(scan_chan_list); | |
1361 | return ret; | |
1362 | } | |
1363 | ||
711825a0 AK |
1364 | /* |
1365 | * Sends IOCTL request to start a scan with user configurations. | |
1366 | * | |
1367 | * This function allocates the IOCTL request buffer, fills it | |
1368 | * with requisite parameters and calls the IOCTL handler. | |
1369 | * | |
1370 | * Upon completion, it also generates a wireless event to notify | |
1371 | * applications. | |
1372 | */ | |
1373 | int mwifiex_set_user_scan_ioctl(struct mwifiex_private *priv, | |
1374 | struct mwifiex_user_scan_cfg *scan_req) | |
1375 | { | |
1376 | int status; | |
1377 | ||
711825a0 | 1378 | status = mwifiex_scan_networks(priv, scan_req); |
38c9d664 | 1379 | queue_work(priv->adapter->workqueue, &priv->adapter->main_work); |
711825a0 AK |
1380 | |
1381 | return status; | |
1382 | } | |
1383 | ||
5e6e3a92 BZ |
1384 | /* |
1385 | * This function prepares a scan command to be sent to the firmware. | |
1386 | * | |
1387 | * This uses the scan command configuration sent to the command processing | |
1388 | * module in command preparation stage to configure a scan command structure | |
1389 | * to send to firmware. | |
1390 | * | |
1391 | * The fixed fields specifying the BSS type and BSSID filters as well as a | |
1392 | * variable number/length of TLVs are sent in the command to firmware. | |
1393 | * | |
1394 | * Preparation also includes - | |
1395 | * - Setting command ID, and proper size | |
1396 | * - Ensuring correct endian-ness | |
1397 | */ | |
a5ffddb7 AK |
1398 | int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command *cmd, |
1399 | struct mwifiex_scan_cmd_config *scan_cfg) | |
5e6e3a92 BZ |
1400 | { |
1401 | struct host_cmd_ds_802_11_scan *scan_cmd = &cmd->params.scan; | |
5e6e3a92 BZ |
1402 | |
1403 | /* Set fixed field variables in scan command */ | |
1404 | scan_cmd->bss_mode = scan_cfg->bss_mode; | |
1405 | memcpy(scan_cmd->bssid, scan_cfg->specific_bssid, | |
1406 | sizeof(scan_cmd->bssid)); | |
1407 | memcpy(scan_cmd->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len); | |
1408 | ||
1409 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN); | |
1410 | ||
1411 | /* Size is equal to the sizeof(fixed portions) + the TLV len + header */ | |
1412 | cmd->size = cpu_to_le16((u16) (sizeof(scan_cmd->bss_mode) | |
1413 | + sizeof(scan_cmd->bssid) | |
1414 | + scan_cfg->tlv_buf_len + S_DS_GEN)); | |
1415 | ||
1416 | return 0; | |
1417 | } | |
1418 | ||
7c6fa2a8 AK |
1419 | /* |
1420 | * This function checks compatibility of requested network with current | |
1421 | * driver settings. | |
1422 | */ | |
1423 | int mwifiex_check_network_compatibility(struct mwifiex_private *priv, | |
1424 | struct mwifiex_bssdescriptor *bss_desc) | |
1425 | { | |
1426 | int ret = -1; | |
1427 | ||
1428 | if (!bss_desc) | |
1429 | return -1; | |
1430 | ||
6685d109 YAP |
1431 | if ((mwifiex_get_cfp(priv, (u8) bss_desc->bss_band, |
1432 | (u16) bss_desc->channel, 0))) { | |
7c6fa2a8 AK |
1433 | switch (priv->bss_mode) { |
1434 | case NL80211_IFTYPE_STATION: | |
1435 | case NL80211_IFTYPE_ADHOC: | |
1436 | ret = mwifiex_is_network_compatible(priv, bss_desc, | |
1437 | priv->bss_mode); | |
1438 | if (ret) | |
1439 | dev_err(priv->adapter->dev, "cannot find ssid " | |
1440 | "%s\n", bss_desc->ssid.ssid); | |
1441 | break; | |
1442 | default: | |
1443 | ret = 0; | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | return ret; | |
1448 | } | |
1449 | ||
1450 | static int | |
5116f3ce AK |
1451 | mwifiex_update_curr_bss_params(struct mwifiex_private *priv, u8 *bssid, |
1452 | s32 rssi, const u8 *ie_buf, size_t ie_len, | |
1453 | u16 beacon_period, u16 cap_info_bitmap, u8 band) | |
7c6fa2a8 | 1454 | { |
db652e4b | 1455 | struct mwifiex_bssdescriptor *bss_desc; |
7c6fa2a8 AK |
1456 | int ret; |
1457 | unsigned long flags; | |
1458 | u8 *beacon_ie; | |
1459 | ||
1460 | /* Allocate and fill new bss descriptor */ | |
1461 | bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor), | |
1462 | GFP_KERNEL); | |
1463 | if (!bss_desc) { | |
1464 | dev_err(priv->adapter->dev, " failed to alloc bss_desc\n"); | |
1465 | return -ENOMEM; | |
1466 | } | |
5982b47a YAP |
1467 | |
1468 | beacon_ie = kmemdup(ie_buf, ie_len, GFP_KERNEL); | |
f7503230 | 1469 | if (!beacon_ie) { |
db652e4b | 1470 | kfree(bss_desc); |
f7503230 | 1471 | dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n"); |
7c6fa2a8 AK |
1472 | return -ENOMEM; |
1473 | } | |
7c6fa2a8 AK |
1474 | |
1475 | ret = mwifiex_fill_new_bss_desc(priv, bssid, rssi, beacon_ie, | |
1476 | ie_len, beacon_period, | |
5116f3ce | 1477 | cap_info_bitmap, band, bss_desc); |
7c6fa2a8 AK |
1478 | if (ret) |
1479 | goto done; | |
1480 | ||
1481 | ret = mwifiex_check_network_compatibility(priv, bss_desc); | |
1482 | if (ret) | |
1483 | goto done; | |
1484 | ||
1485 | /* Update current bss descriptor parameters */ | |
1486 | spin_lock_irqsave(&priv->curr_bcn_buf_lock, flags); | |
1487 | priv->curr_bss_params.bss_descriptor.bcn_wpa_ie = NULL; | |
1488 | priv->curr_bss_params.bss_descriptor.wpa_offset = 0; | |
1489 | priv->curr_bss_params.bss_descriptor.bcn_rsn_ie = NULL; | |
1490 | priv->curr_bss_params.bss_descriptor.rsn_offset = 0; | |
1491 | priv->curr_bss_params.bss_descriptor.bcn_wapi_ie = NULL; | |
1492 | priv->curr_bss_params.bss_descriptor.wapi_offset = 0; | |
1493 | priv->curr_bss_params.bss_descriptor.bcn_ht_cap = NULL; | |
1494 | priv->curr_bss_params.bss_descriptor.ht_cap_offset = | |
1495 | 0; | |
1496 | priv->curr_bss_params.bss_descriptor.bcn_ht_info = NULL; | |
1497 | priv->curr_bss_params.bss_descriptor.ht_info_offset = | |
1498 | 0; | |
1499 | priv->curr_bss_params.bss_descriptor.bcn_bss_co_2040 = | |
1500 | NULL; | |
1501 | priv->curr_bss_params.bss_descriptor. | |
1502 | bss_co_2040_offset = 0; | |
1503 | priv->curr_bss_params.bss_descriptor.bcn_ext_cap = NULL; | |
1504 | priv->curr_bss_params.bss_descriptor.ext_cap_offset = 0; | |
1505 | priv->curr_bss_params.bss_descriptor.beacon_buf = NULL; | |
1506 | priv->curr_bss_params.bss_descriptor.beacon_buf_size = | |
1507 | 0; | |
1508 | ||
1509 | /* Make a copy of current BSSID descriptor */ | |
1510 | memcpy(&priv->curr_bss_params.bss_descriptor, bss_desc, | |
cff23cec | 1511 | sizeof(priv->curr_bss_params.bss_descriptor)); |
7c6fa2a8 AK |
1512 | mwifiex_save_curr_bcn(priv); |
1513 | spin_unlock_irqrestore(&priv->curr_bcn_buf_lock, flags); | |
1514 | ||
1515 | done: | |
1516 | kfree(bss_desc); | |
1517 | kfree(beacon_ie); | |
1518 | return 0; | |
1519 | } | |
1520 | ||
5e6e3a92 BZ |
1521 | /* |
1522 | * This function handles the command response of scan. | |
1523 | * | |
1524 | * The response buffer for the scan command has the following | |
1525 | * memory layout: | |
1526 | * | |
1527 | * .-------------------------------------------------------------. | |
1528 | * | Header (4 * sizeof(t_u16)): Standard command response hdr | | |
1529 | * .-------------------------------------------------------------. | |
1530 | * | BufSize (t_u16) : sizeof the BSS Description data | | |
1531 | * .-------------------------------------------------------------. | |
1532 | * | NumOfSet (t_u8) : Number of BSS Descs returned | | |
1533 | * .-------------------------------------------------------------. | |
1534 | * | BSSDescription data (variable, size given in BufSize) | | |
1535 | * .-------------------------------------------------------------. | |
1536 | * | TLV data (variable, size calculated using Header->Size, | | |
1537 | * | BufSize and sizeof the fixed fields above) | | |
1538 | * .-------------------------------------------------------------. | |
1539 | */ | |
1540 | int mwifiex_ret_802_11_scan(struct mwifiex_private *priv, | |
600f5d90 | 1541 | struct host_cmd_ds_command *resp) |
5e6e3a92 BZ |
1542 | { |
1543 | int ret = 0; | |
1544 | struct mwifiex_adapter *adapter = priv->adapter; | |
270e58e8 YAP |
1545 | struct cmd_ctrl_node *cmd_node; |
1546 | struct host_cmd_ds_802_11_scan_rsp *scan_rsp; | |
5e6e3a92 BZ |
1547 | struct mwifiex_ie_types_data *tlv_data; |
1548 | struct mwifiex_ie_types_tsf_timestamp *tsf_tlv; | |
1549 | u8 *bss_info; | |
1550 | u32 scan_resp_size; | |
1551 | u32 bytes_left; | |
5e6e3a92 BZ |
1552 | u32 idx; |
1553 | u32 tlv_buf_size; | |
5e6e3a92 BZ |
1554 | struct mwifiex_chan_freq_power *cfp; |
1555 | struct mwifiex_ie_types_chan_band_list_param_set *chan_band_tlv; | |
1556 | struct chan_band_param_set *chan_band; | |
5e6e3a92 BZ |
1557 | u8 is_bgscan_resp; |
1558 | unsigned long flags; | |
5116f3ce | 1559 | struct cfg80211_bss *bss; |
5e6e3a92 BZ |
1560 | |
1561 | is_bgscan_resp = (le16_to_cpu(resp->command) | |
cff23cec | 1562 | == HostCmd_CMD_802_11_BG_SCAN_QUERY); |
5e6e3a92 BZ |
1563 | if (is_bgscan_resp) |
1564 | scan_rsp = &resp->params.bg_scan_query_resp.scan_resp; | |
1565 | else | |
1566 | scan_rsp = &resp->params.scan_resp; | |
1567 | ||
1568 | ||
67a50035 | 1569 | if (scan_rsp->number_of_sets > MWIFIEX_MAX_AP) { |
5e6e3a92 | 1570 | dev_err(adapter->dev, "SCAN_RESP: too many AP returned (%d)\n", |
cff23cec | 1571 | scan_rsp->number_of_sets); |
5e6e3a92 BZ |
1572 | ret = -1; |
1573 | goto done; | |
1574 | } | |
1575 | ||
1576 | bytes_left = le16_to_cpu(scan_rsp->bss_descript_size); | |
1577 | dev_dbg(adapter->dev, "info: SCAN_RESP: bss_descript_size %d\n", | |
cff23cec | 1578 | bytes_left); |
5e6e3a92 BZ |
1579 | |
1580 | scan_resp_size = le16_to_cpu(resp->size); | |
1581 | ||
1582 | dev_dbg(adapter->dev, | |
1583 | "info: SCAN_RESP: returned %d APs before parsing\n", | |
cff23cec | 1584 | scan_rsp->number_of_sets); |
5e6e3a92 | 1585 | |
5e6e3a92 BZ |
1586 | bss_info = scan_rsp->bss_desc_and_tlv_buffer; |
1587 | ||
1588 | /* | |
1589 | * The size of the TLV buffer is equal to the entire command response | |
1590 | * size (scan_resp_size) minus the fixed fields (sizeof()'s), the | |
1591 | * BSS Descriptions (bss_descript_size as bytesLef) and the command | |
1592 | * response header (S_DS_GEN) | |
1593 | */ | |
1594 | tlv_buf_size = scan_resp_size - (bytes_left | |
1595 | + sizeof(scan_rsp->bss_descript_size) | |
1596 | + sizeof(scan_rsp->number_of_sets) | |
1597 | + S_DS_GEN); | |
1598 | ||
1599 | tlv_data = (struct mwifiex_ie_types_data *) (scan_rsp-> | |
1600 | bss_desc_and_tlv_buffer + | |
1601 | bytes_left); | |
1602 | ||
1603 | /* Search the TLV buffer space in the scan response for any valid | |
1604 | TLVs */ | |
1605 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
1606 | TLV_TYPE_TSFTIMESTAMP, | |
1607 | (struct mwifiex_ie_types_data **) | |
1608 | &tsf_tlv); | |
1609 | ||
1610 | /* Search the TLV buffer space in the scan response for any valid | |
1611 | TLVs */ | |
1612 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
1613 | TLV_TYPE_CHANNELBANDLIST, | |
1614 | (struct mwifiex_ie_types_data **) | |
1615 | &chan_band_tlv); | |
1616 | ||
5e6e3a92 | 1617 | for (idx = 0; idx < scan_rsp->number_of_sets && bytes_left; idx++) { |
7c6fa2a8 AK |
1618 | u8 bssid[ETH_ALEN]; |
1619 | s32 rssi; | |
1620 | const u8 *ie_buf; | |
1621 | size_t ie_len; | |
6685d109 | 1622 | u16 channel = 0; |
7c6fa2a8 AK |
1623 | u64 network_tsf = 0; |
1624 | u16 beacon_size = 0; | |
1625 | u32 curr_bcn_bytes; | |
1626 | u32 freq; | |
1627 | u16 beacon_period; | |
1628 | u16 cap_info_bitmap; | |
1629 | u8 *current_ptr; | |
1630 | struct mwifiex_bcn_param *bcn_param; | |
1631 | ||
1632 | if (bytes_left >= sizeof(beacon_size)) { | |
1633 | /* Extract & convert beacon size from command buffer */ | |
1634 | memcpy(&beacon_size, bss_info, sizeof(beacon_size)); | |
1635 | bytes_left -= sizeof(beacon_size); | |
1636 | bss_info += sizeof(beacon_size); | |
5e6e3a92 BZ |
1637 | } |
1638 | ||
7c6fa2a8 AK |
1639 | if (!beacon_size || beacon_size > bytes_left) { |
1640 | bss_info += bytes_left; | |
1641 | bytes_left = 0; | |
1642 | return -1; | |
1643 | } | |
5e6e3a92 | 1644 | |
7c6fa2a8 AK |
1645 | /* Initialize the current working beacon pointer for this BSS |
1646 | * iteration */ | |
1647 | current_ptr = bss_info; | |
1648 | ||
1649 | /* Advance the return beacon pointer past the current beacon */ | |
1650 | bss_info += beacon_size; | |
1651 | bytes_left -= beacon_size; | |
1652 | ||
1653 | curr_bcn_bytes = beacon_size; | |
1654 | ||
1655 | /* | |
1656 | * First 5 fields are bssid, RSSI, time stamp, beacon interval, | |
1657 | * and capability information | |
1658 | */ | |
1659 | if (curr_bcn_bytes < sizeof(struct mwifiex_bcn_param)) { | |
cff23cec YAP |
1660 | dev_err(adapter->dev, |
1661 | "InterpretIE: not enough bytes left\n"); | |
7c6fa2a8 AK |
1662 | continue; |
1663 | } | |
1664 | bcn_param = (struct mwifiex_bcn_param *)current_ptr; | |
1665 | current_ptr += sizeof(*bcn_param); | |
1666 | curr_bcn_bytes -= sizeof(*bcn_param); | |
1667 | ||
1668 | memcpy(bssid, bcn_param->bssid, ETH_ALEN); | |
1669 | ||
1670 | rssi = (s32) (bcn_param->rssi); | |
cff23cec | 1671 | dev_dbg(adapter->dev, "info: InterpretIE: RSSI=%02X\n", rssi); |
7c6fa2a8 AK |
1672 | |
1673 | beacon_period = le16_to_cpu(bcn_param->beacon_period); | |
1674 | ||
1675 | cap_info_bitmap = le16_to_cpu(bcn_param->cap_info_bitmap); | |
1676 | dev_dbg(adapter->dev, "info: InterpretIE: capabilities=0x%X\n", | |
cff23cec | 1677 | cap_info_bitmap); |
7c6fa2a8 AK |
1678 | |
1679 | /* Rest of the current buffer are IE's */ | |
1680 | ie_buf = current_ptr; | |
1681 | ie_len = curr_bcn_bytes; | |
cff23cec YAP |
1682 | dev_dbg(adapter->dev, |
1683 | "info: InterpretIE: IELength for this AP = %d\n", | |
1684 | curr_bcn_bytes); | |
7c6fa2a8 AK |
1685 | |
1686 | while (curr_bcn_bytes >= sizeof(struct ieee_types_header)) { | |
1687 | u8 element_id, element_len; | |
1688 | ||
1689 | element_id = *current_ptr; | |
1690 | element_len = *(current_ptr + 1); | |
1691 | if (curr_bcn_bytes < element_len + | |
1692 | sizeof(struct ieee_types_header)) { | |
cff23cec YAP |
1693 | dev_err(priv->adapter->dev, |
1694 | "%s: bytes left < IE length\n", | |
7c6fa2a8 AK |
1695 | __func__); |
1696 | goto done; | |
5e6e3a92 | 1697 | } |
7c6fa2a8 AK |
1698 | if (element_id == WLAN_EID_DS_PARAMS) { |
1699 | channel = *(u8 *) (current_ptr + | |
1700 | sizeof(struct ieee_types_header)); | |
5e6e3a92 BZ |
1701 | break; |
1702 | } | |
7c6fa2a8 AK |
1703 | |
1704 | current_ptr += element_len + | |
1705 | sizeof(struct ieee_types_header); | |
1706 | curr_bcn_bytes -= element_len + | |
1707 | sizeof(struct ieee_types_header); | |
5e6e3a92 BZ |
1708 | } |
1709 | ||
5e6e3a92 BZ |
1710 | /* |
1711 | * If the TSF TLV was appended to the scan results, save this | |
1712 | * entry's TSF value in the networkTSF field.The networkTSF is | |
1713 | * the firmware's TSF value at the time the beacon or probe | |
1714 | * response was received. | |
1715 | */ | |
7c6fa2a8 AK |
1716 | if (tsf_tlv) |
1717 | memcpy(&network_tsf, | |
cff23cec YAP |
1718 | &tsf_tlv->tsf_data[idx * TSF_DATA_SIZE], |
1719 | sizeof(network_tsf)); | |
7c6fa2a8 | 1720 | |
6685d109 | 1721 | if (channel) { |
7c6fa2a8 AK |
1722 | struct ieee80211_channel *chan; |
1723 | u8 band; | |
1724 | ||
1725 | band = BAND_G; | |
1726 | if (chan_band_tlv) { | |
1727 | chan_band = | |
1728 | &chan_band_tlv->chan_band_param[idx]; | |
1729 | band = mwifiex_radio_type_to_band( | |
1730 | chan_band->radio_type | |
1731 | & (BIT(0) | BIT(1))); | |
1732 | } | |
5e6e3a92 | 1733 | |
6685d109 | 1734 | cfp = mwifiex_get_cfp(priv, band, channel, 0); |
5e6e3a92 | 1735 | |
7c6fa2a8 | 1736 | freq = cfp ? cfp->freq : 0; |
5e6e3a92 | 1737 | |
7c6fa2a8 | 1738 | chan = ieee80211_get_channel(priv->wdev->wiphy, freq); |
5e6e3a92 | 1739 | |
7c6fa2a8 | 1740 | if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) { |
5116f3ce AK |
1741 | bss = cfg80211_inform_bss(priv->wdev->wiphy, |
1742 | chan, bssid, network_tsf, | |
1743 | cap_info_bitmap, beacon_period, | |
1744 | ie_buf, ie_len, rssi, GFP_KERNEL); | |
1745 | *(u8 *)bss->priv = band; | |
aa95a48d | 1746 | cfg80211_put_bss(bss); |
5e6e3a92 | 1747 | |
cff23cec YAP |
1748 | if (priv->media_connected && |
1749 | !memcmp(bssid, | |
1750 | priv->curr_bss_params.bss_descriptor | |
1751 | .mac_address, ETH_ALEN)) | |
1752 | mwifiex_update_curr_bss_params | |
1753 | (priv, bssid, rssi, | |
1754 | ie_buf, ie_len, | |
1755 | beacon_period, | |
1756 | cap_info_bitmap, band); | |
7c6fa2a8 AK |
1757 | } |
1758 | } else { | |
1759 | dev_dbg(adapter->dev, "missing BSS channel IE\n"); | |
1760 | } | |
1761 | } | |
5e6e3a92 BZ |
1762 | |
1763 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1764 | if (list_empty(&adapter->scan_pending_q)) { | |
1765 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1766 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1767 | adapter->scan_processing = false; | |
1768 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
5e6e3a92 BZ |
1769 | |
1770 | /* Need to indicate IOCTL complete */ | |
600f5d90 AK |
1771 | if (adapter->curr_cmd->wait_q_enabled) { |
1772 | adapter->cmd_wait_q.status = 0; | |
efaaa8b8 | 1773 | mwifiex_complete_cmd(adapter, adapter->curr_cmd); |
5e6e3a92 BZ |
1774 | } |
1775 | if (priv->report_scan_result) | |
1776 | priv->report_scan_result = false; | |
1777 | if (priv->scan_pending_on_block) { | |
1778 | priv->scan_pending_on_block = false; | |
1779 | up(&priv->async_sem); | |
1780 | } | |
1781 | ||
38c9d664 | 1782 | if (priv->user_scan_cfg) { |
cff23cec YAP |
1783 | dev_dbg(priv->adapter->dev, |
1784 | "info: %s: sending scan results\n", __func__); | |
38c9d664 AK |
1785 | cfg80211_scan_done(priv->scan_request, 0); |
1786 | priv->scan_request = NULL; | |
1787 | kfree(priv->user_scan_cfg); | |
1788 | priv->user_scan_cfg = NULL; | |
1789 | } | |
5e6e3a92 BZ |
1790 | } else { |
1791 | /* Get scan command from scan_pending_q and put to | |
1792 | cmd_pending_q */ | |
1793 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
1794 | struct cmd_ctrl_node, list); | |
1795 | list_del(&cmd_node->list); | |
1796 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1797 | ||
1798 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true); | |
1799 | } | |
1800 | ||
1801 | done: | |
5e6e3a92 BZ |
1802 | return ret; |
1803 | } | |
1804 | ||
1805 | /* | |
1806 | * This function prepares command for background scan query. | |
1807 | * | |
1808 | * Preparation includes - | |
1809 | * - Setting command ID and proper size | |
1810 | * - Setting background scan flush parameter | |
1811 | * - Ensuring correct endian-ness | |
1812 | */ | |
572e8f3e | 1813 | int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command *cmd) |
5e6e3a92 BZ |
1814 | { |
1815 | struct host_cmd_ds_802_11_bg_scan_query *bg_query = | |
1816 | &cmd->params.bg_scan_query; | |
1817 | ||
1818 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY); | |
1819 | cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query) | |
1820 | + S_DS_GEN); | |
1821 | ||
1822 | bg_query->flush = 1; | |
1823 | ||
1824 | return 0; | |
1825 | } | |
1826 | ||
5e6e3a92 BZ |
1827 | /* |
1828 | * This function inserts scan command node to the scan pending queue. | |
1829 | */ | |
1830 | void | |
1831 | mwifiex_queue_scan_cmd(struct mwifiex_private *priv, | |
1832 | struct cmd_ctrl_node *cmd_node) | |
1833 | { | |
1834 | struct mwifiex_adapter *adapter = priv->adapter; | |
1835 | unsigned long flags; | |
1836 | ||
600f5d90 | 1837 | cmd_node->wait_q_enabled = true; |
efaaa8b8 | 1838 | cmd_node->condition = &adapter->scan_wait_q_woken; |
5e6e3a92 BZ |
1839 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); |
1840 | list_add_tail(&cmd_node->list, &adapter->scan_pending_q); | |
1841 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1842 | } | |
1843 | ||
5e6e3a92 BZ |
1844 | /* |
1845 | * This function sends a scan command for all available channels to the | |
1846 | * firmware, filtered on a specific SSID. | |
1847 | */ | |
1848 | static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv, | |
b9be5f39 | 1849 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 BZ |
1850 | { |
1851 | struct mwifiex_adapter *adapter = priv->adapter; | |
1852 | int ret = 0; | |
1853 | struct mwifiex_user_scan_cfg *scan_cfg; | |
1854 | ||
1855 | if (!req_ssid) | |
1856 | return -1; | |
1857 | ||
600f5d90 | 1858 | if (adapter->scan_processing) { |
5e6e3a92 BZ |
1859 | dev_dbg(adapter->dev, "cmd: Scan already in process...\n"); |
1860 | return ret; | |
1861 | } | |
1862 | ||
600f5d90 | 1863 | if (priv->scan_block) { |
5e6e3a92 BZ |
1864 | dev_dbg(adapter->dev, |
1865 | "cmd: Scan is blocked during association...\n"); | |
1866 | return ret; | |
1867 | } | |
1868 | ||
5e6e3a92 BZ |
1869 | scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg), GFP_KERNEL); |
1870 | if (!scan_cfg) { | |
1871 | dev_err(adapter->dev, "failed to alloc scan_cfg\n"); | |
b53575ec | 1872 | return -ENOMEM; |
5e6e3a92 BZ |
1873 | } |
1874 | ||
be0b281e AK |
1875 | scan_cfg->ssid_list = req_ssid; |
1876 | scan_cfg->num_ssids = 1; | |
5e6e3a92 | 1877 | |
600f5d90 | 1878 | ret = mwifiex_scan_networks(priv, scan_cfg); |
5e6e3a92 BZ |
1879 | |
1880 | kfree(scan_cfg); | |
1881 | return ret; | |
1882 | } | |
1883 | ||
1884 | /* | |
1885 | * Sends IOCTL request to start a scan. | |
1886 | * | |
1887 | * This function allocates the IOCTL request buffer, fills it | |
1888 | * with requisite parameters and calls the IOCTL handler. | |
1889 | * | |
1890 | * Scan command can be issued for both normal scan and specific SSID | |
1891 | * scan, depending upon whether an SSID is provided or not. | |
1892 | */ | |
600f5d90 | 1893 | int mwifiex_request_scan(struct mwifiex_private *priv, |
b9be5f39 | 1894 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 | 1895 | { |
270e58e8 | 1896 | int ret; |
5e6e3a92 BZ |
1897 | |
1898 | if (down_interruptible(&priv->async_sem)) { | |
1899 | dev_err(priv->adapter->dev, "%s: acquire semaphore\n", | |
cff23cec | 1900 | __func__); |
5e6e3a92 BZ |
1901 | return -1; |
1902 | } | |
1903 | priv->scan_pending_on_block = true; | |
1904 | ||
efaaa8b8 | 1905 | priv->adapter->scan_wait_q_woken = false; |
5e6e3a92 BZ |
1906 | |
1907 | if (req_ssid && req_ssid->ssid_len != 0) | |
1908 | /* Specific SSID scan */ | |
600f5d90 | 1909 | ret = mwifiex_scan_specific_ssid(priv, req_ssid); |
5e6e3a92 BZ |
1910 | else |
1911 | /* Normal scan */ | |
600f5d90 AK |
1912 | ret = mwifiex_scan_networks(priv, NULL); |
1913 | ||
1914 | if (!ret) | |
1915 | ret = mwifiex_wait_queue_complete(priv->adapter); | |
1916 | ||
5e6e3a92 BZ |
1917 | if (ret == -1) { |
1918 | priv->scan_pending_on_block = false; | |
1919 | up(&priv->async_sem); | |
1920 | } | |
600f5d90 | 1921 | |
5e6e3a92 BZ |
1922 | return ret; |
1923 | } | |
1924 | ||
1925 | /* | |
1926 | * This function appends the vendor specific IE TLV to a buffer. | |
1927 | */ | |
1928 | int | |
1929 | mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv, | |
1930 | u16 vsie_mask, u8 **buffer) | |
1931 | { | |
1932 | int id, ret_len = 0; | |
1933 | struct mwifiex_ie_types_vendor_param_set *vs_param_set; | |
1934 | ||
1935 | if (!buffer) | |
1936 | return 0; | |
1937 | if (!(*buffer)) | |
1938 | return 0; | |
1939 | ||
1940 | /* | |
1941 | * Traverse through the saved vendor specific IE array and append | |
1942 | * the selected(scan/assoc/adhoc) IE as TLV to the command | |
1943 | */ | |
1944 | for (id = 0; id < MWIFIEX_MAX_VSIE_NUM; id++) { | |
1945 | if (priv->vs_ie[id].mask & vsie_mask) { | |
1946 | vs_param_set = | |
1947 | (struct mwifiex_ie_types_vendor_param_set *) | |
1948 | *buffer; | |
1949 | vs_param_set->header.type = | |
1950 | cpu_to_le16(TLV_TYPE_PASSTHROUGH); | |
1951 | vs_param_set->header.len = | |
1952 | cpu_to_le16((((u16) priv->vs_ie[id].ie[1]) | |
1953 | & 0x00FF) + 2); | |
1954 | memcpy(vs_param_set->ie, priv->vs_ie[id].ie, | |
1955 | le16_to_cpu(vs_param_set->header.len)); | |
1956 | *buffer += le16_to_cpu(vs_param_set->header.len) + | |
1957 | sizeof(struct mwifiex_ie_types_header); | |
1958 | ret_len += le16_to_cpu(vs_param_set->header.len) + | |
1959 | sizeof(struct mwifiex_ie_types_header); | |
1960 | } | |
1961 | } | |
1962 | return ret_len; | |
1963 | } | |
1964 | ||
1965 | /* | |
1966 | * This function saves a beacon buffer of the current BSS descriptor. | |
1967 | * | |
1968 | * The current beacon buffer is saved so that it can be restored in the | |
1969 | * following cases that makes the beacon buffer not to contain the current | |
1970 | * ssid's beacon buffer. | |
1971 | * - The current ssid was not found somehow in the last scan. | |
1972 | * - The current ssid was the last entry of the scan table and overloaded. | |
1973 | */ | |
1974 | void | |
1975 | mwifiex_save_curr_bcn(struct mwifiex_private *priv) | |
1976 | { | |
1977 | struct mwifiex_bssdescriptor *curr_bss = | |
1978 | &priv->curr_bss_params.bss_descriptor; | |
1979 | ||
030fe797 AK |
1980 | if (!curr_bss->beacon_buf_size) |
1981 | return; | |
5e6e3a92 | 1982 | |
030fe797 AK |
1983 | /* allocate beacon buffer at 1st time; or if it's size has changed */ |
1984 | if (!priv->curr_bcn_buf || | |
cff23cec | 1985 | priv->curr_bcn_size != curr_bss->beacon_buf_size) { |
5e6e3a92 | 1986 | priv->curr_bcn_size = curr_bss->beacon_buf_size; |
5e6e3a92 | 1987 | |
030fe797 | 1988 | kfree(priv->curr_bcn_buf); |
5982b47a | 1989 | priv->curr_bcn_buf = kmalloc(curr_bss->beacon_buf_size, |
cff23cec | 1990 | GFP_ATOMIC); |
5e6e3a92 BZ |
1991 | if (!priv->curr_bcn_buf) { |
1992 | dev_err(priv->adapter->dev, | |
cff23cec | 1993 | "failed to alloc curr_bcn_buf\n"); |
030fe797 | 1994 | return; |
5e6e3a92 BZ |
1995 | } |
1996 | } | |
030fe797 AK |
1997 | |
1998 | memcpy(priv->curr_bcn_buf, curr_bss->beacon_buf, | |
cff23cec | 1999 | curr_bss->beacon_buf_size); |
030fe797 AK |
2000 | dev_dbg(priv->adapter->dev, "info: current beacon saved %d\n", |
2001 | priv->curr_bcn_size); | |
7c6fa2a8 AK |
2002 | |
2003 | curr_bss->beacon_buf = priv->curr_bcn_buf; | |
2004 | ||
2005 | /* adjust the pointers in the current BSS descriptor */ | |
2006 | if (curr_bss->bcn_wpa_ie) | |
2007 | curr_bss->bcn_wpa_ie = | |
2008 | (struct ieee_types_vendor_specific *) | |
2009 | (curr_bss->beacon_buf + | |
2010 | curr_bss->wpa_offset); | |
2011 | ||
2012 | if (curr_bss->bcn_rsn_ie) | |
2013 | curr_bss->bcn_rsn_ie = (struct ieee_types_generic *) | |
2014 | (curr_bss->beacon_buf + | |
2015 | curr_bss->rsn_offset); | |
2016 | ||
2017 | if (curr_bss->bcn_ht_cap) | |
2018 | curr_bss->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
2019 | (curr_bss->beacon_buf + | |
2020 | curr_bss->ht_cap_offset); | |
2021 | ||
2022 | if (curr_bss->bcn_ht_info) | |
2023 | curr_bss->bcn_ht_info = (struct ieee80211_ht_info *) | |
2024 | (curr_bss->beacon_buf + | |
2025 | curr_bss->ht_info_offset); | |
2026 | ||
2027 | if (curr_bss->bcn_bss_co_2040) | |
2028 | curr_bss->bcn_bss_co_2040 = | |
2029 | (u8 *) (curr_bss->beacon_buf + | |
2030 | curr_bss->bss_co_2040_offset); | |
2031 | ||
2032 | if (curr_bss->bcn_ext_cap) | |
2033 | curr_bss->bcn_ext_cap = (u8 *) (curr_bss->beacon_buf + | |
2034 | curr_bss->ext_cap_offset); | |
5e6e3a92 BZ |
2035 | } |
2036 | ||
2037 | /* | |
2038 | * This function frees the current BSS descriptor beacon buffer. | |
2039 | */ | |
2040 | void | |
2041 | mwifiex_free_curr_bcn(struct mwifiex_private *priv) | |
2042 | { | |
2043 | kfree(priv->curr_bcn_buf); | |
2044 | priv->curr_bcn_buf = NULL; | |
2045 | } |