Commit | Line | Data |
---|---|---|
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) + | |
128 | RSN_GTK_OUI_OFFSET); | |
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 | ||
151 | if (((bss_desc->bcn_wpa_ie) && ((*(bss_desc->bcn_wpa_ie)). | |
152 | vend_hdr.element_id == WLAN_EID_WPA))) { | |
153 | iebody = (struct ie_body *) bss_desc->bcn_wpa_ie->data; | |
154 | oui = &mwifiex_wpa_oui[cipher][0]; | |
155 | ret = mwifiex_search_oui_in_ie(iebody, oui); | |
156 | if (ret) | |
157 | return ret; | |
158 | } | |
159 | return ret; | |
160 | } | |
161 | ||
162 | /* | |
163 | * This function compares two SSIDs and checks if they match. | |
164 | */ | |
165 | s32 | |
b9be5f39 | 166 | mwifiex_ssid_cmp(struct cfg80211_ssid *ssid1, struct cfg80211_ssid *ssid2) |
5e6e3a92 BZ |
167 | { |
168 | if (!ssid1 || !ssid2 || (ssid1->ssid_len != ssid2->ssid_len)) | |
169 | return -1; | |
170 | return memcmp(ssid1->ssid, ssid2->ssid, ssid1->ssid_len); | |
171 | } | |
172 | ||
5e6e3a92 BZ |
173 | /* |
174 | * This function checks if wapi is enabled in driver and scanned network is | |
175 | * compatible with it. | |
176 | */ | |
177 | static bool | |
178 | mwifiex_is_network_compatible_for_wapi(struct mwifiex_private *priv, | |
179 | struct mwifiex_bssdescriptor *bss_desc) | |
180 | { | |
181 | if (priv->sec_info.wapi_enabled && | |
182 | (bss_desc->bcn_wapi_ie && | |
183 | ((*(bss_desc->bcn_wapi_ie)).ieee_hdr.element_id == | |
184 | WLAN_EID_BSS_AC_ACCESS_DELAY))) { | |
185 | return true; | |
186 | } | |
187 | return false; | |
188 | } | |
189 | ||
190 | /* | |
191 | * This function checks if driver is configured with no security mode and | |
192 | * scanned network is compatible with it. | |
193 | */ | |
194 | static bool | |
195 | mwifiex_is_network_compatible_for_no_sec(struct mwifiex_private *priv, | |
196 | struct mwifiex_bssdescriptor *bss_desc) | |
197 | { | |
5eb02e44 AK |
198 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
199 | !priv->sec_info.wpa2_enabled && ((!bss_desc->bcn_wpa_ie) || | |
5e6e3a92 BZ |
200 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != |
201 | WLAN_EID_WPA)) | |
202 | && ((!bss_desc->bcn_rsn_ie) || | |
203 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != | |
204 | WLAN_EID_RSN)) | |
2be50b8d YAP |
205 | && !priv->sec_info.encryption_mode |
206 | && !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 | |
217 | mwifiex_is_network_compatible_for_static_wep(struct mwifiex_private *priv, | |
218 | struct mwifiex_bssdescriptor *bss_desc) | |
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 | |
232 | mwifiex_is_network_compatible_for_wpa(struct mwifiex_private *priv, | |
7c6fa2a8 | 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 | |
267 | mwifiex_is_network_compatible_for_wpa2(struct mwifiex_private *priv, | |
7c6fa2a8 | 268 | struct mwifiex_bssdescriptor *bss_desc) |
5e6e3a92 | 269 | { |
5eb02e44 AK |
270 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
271 | priv->sec_info.wpa2_enabled && ((bss_desc->bcn_rsn_ie) && | |
272 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id == WLAN_EID_RSN)) | |
5e6e3a92 BZ |
273 | /* |
274 | * Privacy bit may NOT be set in some APs like | |
275 | * LinkSys WRT54G && bss_desc->privacy | |
276 | */ | |
277 | ) { | |
7c6fa2a8 | 278 | dev_dbg(priv->adapter->dev, "info: %s: WPA2: " |
5e6e3a92 | 279 | " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " |
7c6fa2a8 | 280 | "EncMode=%#x privacy=%#x\n", __func__, |
5e6e3a92 BZ |
281 | (bss_desc->bcn_wpa_ie) ? |
282 | (*(bss_desc->bcn_wpa_ie)). | |
283 | vend_hdr.element_id : 0, | |
284 | (bss_desc->bcn_rsn_ie) ? | |
285 | (*(bss_desc->bcn_rsn_ie)). | |
286 | ieee_hdr.element_id : 0, | |
5eb02e44 | 287 | (priv->sec_info.wep_enabled) ? "e" : "d", |
5e6e3a92 BZ |
288 | (priv->sec_info.wpa_enabled) ? "e" : "d", |
289 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
290 | priv->sec_info.encryption_mode, | |
291 | bss_desc->privacy); | |
292 | return true; | |
293 | } | |
294 | return false; | |
295 | } | |
296 | ||
297 | /* | |
298 | * This function checks if adhoc AES is enabled in driver and scanned network is | |
299 | * compatible with it. | |
300 | */ | |
301 | static bool | |
302 | mwifiex_is_network_compatible_for_adhoc_aes(struct mwifiex_private *priv, | |
303 | struct mwifiex_bssdescriptor *bss_desc) | |
304 | { | |
5eb02e44 AK |
305 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
306 | !priv->sec_info.wpa2_enabled && ((!bss_desc->bcn_wpa_ie) || | |
307 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != WLAN_EID_WPA)) | |
5e6e3a92 BZ |
308 | && ((!bss_desc->bcn_rsn_ie) || ((*(bss_desc->bcn_rsn_ie)).ieee_hdr. |
309 | element_id != WLAN_EID_RSN)) | |
2be50b8d YAP |
310 | && !priv->sec_info.encryption_mode |
311 | && bss_desc->privacy) { | |
5e6e3a92 BZ |
312 | return true; |
313 | } | |
314 | return false; | |
315 | } | |
316 | ||
317 | /* | |
318 | * This function checks if dynamic WEP is enabled in driver and scanned network | |
319 | * is compatible with it. | |
320 | */ | |
321 | static bool | |
322 | mwifiex_is_network_compatible_for_dynamic_wep(struct mwifiex_private *priv, | |
7c6fa2a8 | 323 | struct mwifiex_bssdescriptor *bss_desc) |
5e6e3a92 | 324 | { |
5eb02e44 AK |
325 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
326 | !priv->sec_info.wpa2_enabled && ((!bss_desc->bcn_wpa_ie) || | |
327 | ((*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id != WLAN_EID_WPA)) | |
5e6e3a92 BZ |
328 | && ((!bss_desc->bcn_rsn_ie) || ((*(bss_desc->bcn_rsn_ie)).ieee_hdr. |
329 | element_id != WLAN_EID_RSN)) | |
2be50b8d YAP |
330 | && priv->sec_info.encryption_mode |
331 | && bss_desc->privacy) { | |
5e6e3a92 | 332 | dev_dbg(priv->adapter->dev, "info: %s: dynamic " |
7c6fa2a8 | 333 | "WEP: wpa_ie=%#x wpa2_ie=%#x " |
5e6e3a92 | 334 | "EncMode=%#x privacy=%#x\n", |
7c6fa2a8 | 335 | __func__, |
5e6e3a92 BZ |
336 | (bss_desc->bcn_wpa_ie) ? |
337 | (*(bss_desc->bcn_wpa_ie)). | |
338 | vend_hdr.element_id : 0, | |
339 | (bss_desc->bcn_rsn_ie) ? | |
340 | (*(bss_desc->bcn_rsn_ie)). | |
341 | ieee_hdr.element_id : 0, | |
342 | priv->sec_info.encryption_mode, | |
343 | bss_desc->privacy); | |
344 | return true; | |
345 | } | |
346 | return false; | |
347 | } | |
348 | ||
349 | /* | |
350 | * This function checks if a scanned network is compatible with the driver | |
351 | * settings. | |
352 | * | |
353 | * WEP WPA WPA2 ad-hoc encrypt Network | |
354 | * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible | |
355 | * 0 0 0 0 NONE 0 0 0 yes No security | |
356 | * 0 1 0 0 x 1x 1 x yes WPA (disable | |
357 | * HT if no AES) | |
358 | * 0 0 1 0 x 1x x 1 yes WPA2 (disable | |
359 | * HT if no AES) | |
360 | * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES | |
361 | * 1 0 0 0 NONE 1 0 0 yes Static WEP | |
362 | * (disable HT) | |
363 | * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP | |
364 | * | |
365 | * Compatibility is not matched while roaming, except for mode. | |
366 | */ | |
367 | static s32 | |
7c6fa2a8 AK |
368 | mwifiex_is_network_compatible(struct mwifiex_private *priv, |
369 | struct mwifiex_bssdescriptor *bss_desc, u32 mode) | |
5e6e3a92 BZ |
370 | { |
371 | struct mwifiex_adapter *adapter = priv->adapter; | |
5e6e3a92 | 372 | |
5e6e3a92 BZ |
373 | bss_desc->disable_11n = false; |
374 | ||
375 | /* Don't check for compatibility if roaming */ | |
eecd8250 BZ |
376 | if (priv->media_connected && (priv->bss_mode == NL80211_IFTYPE_STATION) |
377 | && (bss_desc->bss_mode == NL80211_IFTYPE_STATION)) | |
7c6fa2a8 | 378 | return 0; |
5e6e3a92 BZ |
379 | |
380 | if (priv->wps.session_enable) { | |
381 | dev_dbg(adapter->dev, | |
382 | "info: return success directly in WPS period\n"); | |
7c6fa2a8 | 383 | return 0; |
5e6e3a92 BZ |
384 | } |
385 | ||
386 | if (mwifiex_is_network_compatible_for_wapi(priv, bss_desc)) { | |
387 | dev_dbg(adapter->dev, "info: return success for WAPI AP\n"); | |
7c6fa2a8 | 388 | return 0; |
5e6e3a92 BZ |
389 | } |
390 | ||
391 | if (bss_desc->bss_mode == mode) { | |
392 | if (mwifiex_is_network_compatible_for_no_sec(priv, bss_desc)) { | |
393 | /* No security */ | |
7c6fa2a8 | 394 | return 0; |
5e6e3a92 BZ |
395 | } else if (mwifiex_is_network_compatible_for_static_wep(priv, |
396 | bss_desc)) { | |
397 | /* Static WEP enabled */ | |
398 | dev_dbg(adapter->dev, "info: Disable 11n in WEP mode.\n"); | |
399 | bss_desc->disable_11n = true; | |
7c6fa2a8 AK |
400 | return 0; |
401 | } else if (mwifiex_is_network_compatible_for_wpa(priv, | |
402 | bss_desc)) { | |
5e6e3a92 BZ |
403 | /* WPA enabled */ |
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(bss_desc, | |
411 | CIPHER_SUITE_TKIP)) { | |
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; |
5e6e3a92 | 421 | } else if (mwifiex_is_network_compatible_for_wpa2(priv, |
7c6fa2a8 | 422 | bss_desc)) { |
5e6e3a92 BZ |
423 | /* WPA2 enabled */ |
424 | if (((priv->adapter->config_bands & BAND_GN | |
425 | || priv->adapter->config_bands & BAND_AN) | |
426 | && bss_desc->bcn_ht_cap) | |
427 | && !mwifiex_is_rsn_oui_present(bss_desc, | |
428 | CIPHER_SUITE_CCMP)) { | |
429 | ||
430 | if (mwifiex_is_rsn_oui_present(bss_desc, | |
431 | CIPHER_SUITE_TKIP)) { | |
432 | dev_dbg(adapter->dev, | |
433 | "info: Disable 11n if AES " | |
434 | "is not supported by AP\n"); | |
435 | bss_desc->disable_11n = true; | |
436 | } else { | |
437 | return -1; | |
438 | } | |
439 | } | |
7c6fa2a8 | 440 | return 0; |
5e6e3a92 BZ |
441 | } else if (mwifiex_is_network_compatible_for_adhoc_aes(priv, |
442 | bss_desc)) { | |
443 | /* Ad-hoc AES enabled */ | |
7c6fa2a8 | 444 | return 0; |
5e6e3a92 | 445 | } else if (mwifiex_is_network_compatible_for_dynamic_wep(priv, |
7c6fa2a8 | 446 | bss_desc)) { |
5e6e3a92 | 447 | /* Dynamic WEP enabled */ |
7c6fa2a8 | 448 | return 0; |
5e6e3a92 BZ |
449 | } |
450 | ||
451 | /* Security doesn't match */ | |
7c6fa2a8 | 452 | dev_dbg(adapter->dev, "info: %s: failed: " |
5e6e3a92 BZ |
453 | "wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s EncMode" |
454 | "=%#x privacy=%#x\n", | |
7c6fa2a8 | 455 | __func__, |
5e6e3a92 BZ |
456 | (bss_desc->bcn_wpa_ie) ? |
457 | (*(bss_desc->bcn_wpa_ie)).vend_hdr. | |
458 | element_id : 0, | |
459 | (bss_desc->bcn_rsn_ie) ? | |
460 | (*(bss_desc->bcn_rsn_ie)).ieee_hdr. | |
461 | element_id : 0, | |
5eb02e44 | 462 | (priv->sec_info.wep_enabled) ? "e" : "d", |
5e6e3a92 BZ |
463 | (priv->sec_info.wpa_enabled) ? "e" : "d", |
464 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
465 | priv->sec_info.encryption_mode, bss_desc->privacy); | |
466 | return -1; | |
467 | } | |
468 | ||
469 | /* Mode doesn't match */ | |
470 | return -1; | |
471 | } | |
472 | ||
5e6e3a92 BZ |
473 | /* |
474 | * This function creates a channel list for the driver to scan, based | |
475 | * on region/band information. | |
476 | * | |
477 | * This routine is used for any scan that is not provided with a | |
478 | * specific channel list to scan. | |
479 | */ | |
480 | static void | |
481 | mwifiex_scan_create_channel_list(struct mwifiex_private *priv, | |
482 | const struct mwifiex_user_scan_cfg | |
483 | *user_scan_in, | |
484 | struct mwifiex_chan_scan_param_set | |
485 | *scan_chan_list, | |
486 | u8 filtered_scan) | |
487 | { | |
488 | enum ieee80211_band band; | |
489 | struct ieee80211_supported_band *sband; | |
490 | struct ieee80211_channel *ch; | |
491 | struct mwifiex_adapter *adapter = priv->adapter; | |
492 | int chan_idx = 0, i; | |
5e6e3a92 BZ |
493 | |
494 | for (band = 0; (band < IEEE80211_NUM_BANDS) ; band++) { | |
495 | ||
496 | if (!priv->wdev->wiphy->bands[band]) | |
497 | continue; | |
498 | ||
499 | sband = priv->wdev->wiphy->bands[band]; | |
500 | ||
d06b7b9e | 501 | for (i = 0; (i < sband->n_channels) ; i++) { |
5e6e3a92 BZ |
502 | ch = &sband->channels[i]; |
503 | if (ch->flags & IEEE80211_CHAN_DISABLED) | |
504 | continue; | |
505 | scan_chan_list[chan_idx].radio_type = band; | |
186630c2 | 506 | |
5e6e3a92 BZ |
507 | if (user_scan_in && |
508 | user_scan_in->chan_list[0].scan_time) | |
509 | scan_chan_list[chan_idx].max_scan_time = | |
510 | cpu_to_le16((u16) user_scan_in-> | |
511 | chan_list[0].scan_time); | |
186630c2 | 512 | else if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
5e6e3a92 BZ |
513 | scan_chan_list[chan_idx].max_scan_time = |
514 | cpu_to_le16(adapter->passive_scan_time); | |
515 | else | |
516 | scan_chan_list[chan_idx].max_scan_time = | |
517 | cpu_to_le16(adapter->active_scan_time); | |
186630c2 AK |
518 | |
519 | if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) | |
5e6e3a92 BZ |
520 | scan_chan_list[chan_idx].chan_scan_mode_bitmap |
521 | |= MWIFIEX_PASSIVE_SCAN; | |
522 | else | |
523 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
524 | &= ~MWIFIEX_PASSIVE_SCAN; | |
525 | scan_chan_list[chan_idx].chan_number = | |
526 | (u32) ch->hw_value; | |
527 | if (filtered_scan) { | |
528 | scan_chan_list[chan_idx].max_scan_time = | |
529 | cpu_to_le16(adapter->specific_scan_time); | |
530 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
531 | |= MWIFIEX_DISABLE_CHAN_FILT; | |
532 | } | |
d06b7b9e | 533 | chan_idx++; |
5e6e3a92 BZ |
534 | } |
535 | ||
536 | } | |
537 | } | |
538 | ||
539 | /* | |
540 | * This function constructs and sends multiple scan config commands to | |
541 | * the firmware. | |
542 | * | |
543 | * Previous routines in the code flow have created a scan command configuration | |
544 | * with any requested TLVs. This function splits the channel TLV into maximum | |
545 | * channels supported per scan lists and sends the portion of the channel TLV, | |
546 | * along with the other TLVs, to the firmware. | |
547 | */ | |
548 | static int | |
600f5d90 | 549 | mwifiex_scan_channel_list(struct mwifiex_private *priv, |
5e6e3a92 BZ |
550 | u32 max_chan_per_scan, u8 filtered_scan, |
551 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
552 | struct mwifiex_ie_types_chan_list_param_set | |
553 | *chan_tlv_out, | |
554 | struct mwifiex_chan_scan_param_set *scan_chan_list) | |
555 | { | |
556 | int ret = 0; | |
557 | struct mwifiex_chan_scan_param_set *tmp_chan_list; | |
558 | struct mwifiex_chan_scan_param_set *start_chan; | |
559 | ||
560 | u32 tlv_idx; | |
561 | u32 total_scan_time; | |
562 | u32 done_early; | |
563 | ||
564 | if (!scan_cfg_out || !chan_tlv_out || !scan_chan_list) { | |
565 | dev_dbg(priv->adapter->dev, | |
566 | "info: Scan: Null detect: %p, %p, %p\n", | |
567 | scan_cfg_out, chan_tlv_out, scan_chan_list); | |
568 | return -1; | |
569 | } | |
570 | ||
571 | chan_tlv_out->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); | |
572 | ||
573 | /* Set the temp channel struct pointer to the start of the desired | |
574 | list */ | |
575 | tmp_chan_list = scan_chan_list; | |
576 | ||
577 | /* Loop through the desired channel list, sending a new firmware scan | |
578 | commands for each max_chan_per_scan channels (or for 1,6,11 | |
579 | individually if configured accordingly) */ | |
580 | while (tmp_chan_list->chan_number) { | |
581 | ||
582 | tlv_idx = 0; | |
583 | total_scan_time = 0; | |
584 | chan_tlv_out->header.len = 0; | |
585 | start_chan = tmp_chan_list; | |
586 | done_early = false; | |
587 | ||
588 | /* | |
589 | * Construct the Channel TLV for the scan command. Continue to | |
590 | * insert channel TLVs until: | |
591 | * - the tlv_idx hits the maximum configured per scan command | |
592 | * - the next channel to insert is 0 (end of desired channel | |
593 | * list) | |
594 | * - done_early is set (controlling individual scanning of | |
595 | * 1,6,11) | |
596 | */ | |
597 | while (tlv_idx < max_chan_per_scan | |
598 | && tmp_chan_list->chan_number && !done_early) { | |
599 | ||
600 | dev_dbg(priv->adapter->dev, | |
601 | "info: Scan: Chan(%3d), Radio(%d)," | |
602 | " Mode(%d, %d), Dur(%d)\n", | |
603 | tmp_chan_list->chan_number, | |
604 | tmp_chan_list->radio_type, | |
605 | tmp_chan_list->chan_scan_mode_bitmap | |
606 | & MWIFIEX_PASSIVE_SCAN, | |
607 | (tmp_chan_list->chan_scan_mode_bitmap | |
608 | & MWIFIEX_DISABLE_CHAN_FILT) >> 1, | |
609 | le16_to_cpu(tmp_chan_list->max_scan_time)); | |
610 | ||
611 | /* Copy the current channel TLV to the command being | |
612 | prepared */ | |
613 | memcpy(chan_tlv_out->chan_scan_param + tlv_idx, | |
614 | tmp_chan_list, | |
615 | sizeof(chan_tlv_out->chan_scan_param)); | |
616 | ||
617 | /* Increment the TLV header length by the size | |
618 | appended */ | |
619 | chan_tlv_out->header.len = | |
620 | cpu_to_le16(le16_to_cpu(chan_tlv_out->header.len) + | |
621 | (sizeof(chan_tlv_out->chan_scan_param))); | |
622 | ||
623 | /* | |
624 | * The tlv buffer length is set to the number of bytes | |
625 | * of the between the channel tlv pointer and the start | |
626 | * of the tlv buffer. This compensates for any TLVs | |
627 | * that were appended before the channel list. | |
628 | */ | |
629 | scan_cfg_out->tlv_buf_len = (u32) ((u8 *) chan_tlv_out - | |
630 | scan_cfg_out->tlv_buf); | |
631 | ||
632 | /* Add the size of the channel tlv header and the data | |
633 | length */ | |
634 | scan_cfg_out->tlv_buf_len += | |
635 | (sizeof(chan_tlv_out->header) | |
636 | + le16_to_cpu(chan_tlv_out->header.len)); | |
637 | ||
638 | /* Increment the index to the channel tlv we are | |
639 | constructing */ | |
640 | tlv_idx++; | |
641 | ||
642 | /* Count the total scan time per command */ | |
643 | total_scan_time += | |
644 | le16_to_cpu(tmp_chan_list->max_scan_time); | |
645 | ||
646 | done_early = false; | |
647 | ||
648 | /* Stop the loop if the *current* channel is in the | |
649 | 1,6,11 set and we are not filtering on a BSSID | |
650 | or SSID. */ | |
651 | if (!filtered_scan && (tmp_chan_list->chan_number == 1 | |
652 | || tmp_chan_list->chan_number == 6 | |
653 | || tmp_chan_list->chan_number == 11)) | |
654 | done_early = true; | |
655 | ||
656 | /* Increment the tmp pointer to the next channel to | |
657 | be scanned */ | |
658 | tmp_chan_list++; | |
659 | ||
660 | /* Stop the loop if the *next* channel is in the 1,6,11 | |
661 | set. This will cause it to be the only channel | |
662 | scanned on the next interation */ | |
663 | if (!filtered_scan && (tmp_chan_list->chan_number == 1 | |
664 | || tmp_chan_list->chan_number == 6 | |
665 | || tmp_chan_list->chan_number == 11)) | |
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 | |
717 | mwifiex_scan_setup_scan_config(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 | |
721 | **chan_list_out, | |
722 | struct mwifiex_chan_scan_param_set | |
723 | *scan_chan_list, | |
724 | u8 *max_chan_per_scan, u8 *filtered_scan, | |
725 | u8 *scan_current_only) | |
726 | { | |
727 | struct mwifiex_adapter *adapter = priv->adapter; | |
728 | struct mwifiex_ie_types_num_probes *num_probes_tlv; | |
729 | struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv; | |
730 | struct mwifiex_ie_types_rates_param_set *rates_tlv; | |
731 | const u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; | |
732 | u8 *tlv_pos; | |
733 | u32 num_probes; | |
734 | u32 ssid_len; | |
735 | u32 chan_idx; | |
736 | u32 scan_type; | |
737 | u16 scan_dur; | |
738 | u8 channel; | |
739 | u8 radio_type; | |
be0b281e | 740 | int i; |
5e6e3a92 BZ |
741 | u8 ssid_filter; |
742 | u8 rates[MWIFIEX_SUPPORTED_RATES]; | |
743 | u32 rates_size; | |
744 | struct mwifiex_ie_types_htcap *ht_cap; | |
745 | ||
746 | /* The tlv_buf_len is calculated for each scan command. The TLVs added | |
747 | in this routine will be preserved since the routine that sends the | |
748 | command will append channelTLVs at *chan_list_out. The difference | |
749 | between the *chan_list_out and the tlv_buf start will be used to | |
750 | calculate the size of anything we add in this routine. */ | |
751 | scan_cfg_out->tlv_buf_len = 0; | |
752 | ||
753 | /* Running tlv pointer. Assigned to chan_list_out at end of function | |
754 | so later routines know where channels can be added to the command | |
755 | buf */ | |
756 | tlv_pos = scan_cfg_out->tlv_buf; | |
757 | ||
758 | /* Initialize the scan as un-filtered; the flag is later set to TRUE | |
759 | below if a SSID or BSSID filter is sent in the command */ | |
760 | *filtered_scan = false; | |
761 | ||
762 | /* Initialize the scan as not being only on the current channel. If | |
763 | the channel list is customized, only contains one channel, and is | |
764 | the active channel, this is set true and data flow is not halted. */ | |
765 | *scan_current_only = false; | |
766 | ||
767 | if (user_scan_in) { | |
768 | ||
769 | /* Default the ssid_filter flag to TRUE, set false under | |
770 | certain wildcard conditions and qualified by the existence | |
771 | of an SSID list before marking the scan as filtered */ | |
772 | ssid_filter = true; | |
773 | ||
774 | /* Set the BSS type scan filter, use Adapter setting if | |
775 | unset */ | |
776 | scan_cfg_out->bss_mode = | |
777 | (user_scan_in->bss_mode ? (u8) user_scan_in-> | |
778 | bss_mode : (u8) adapter->scan_mode); | |
779 | ||
780 | /* Set the number of probes to send, use Adapter setting | |
781 | if unset */ | |
782 | num_probes = | |
783 | (user_scan_in->num_probes ? user_scan_in-> | |
784 | num_probes : adapter->scan_probes); | |
785 | ||
786 | /* | |
787 | * Set the BSSID filter to the incoming configuration, | |
788 | * if non-zero. If not set, it will remain disabled | |
789 | * (all zeros). | |
790 | */ | |
791 | memcpy(scan_cfg_out->specific_bssid, | |
792 | user_scan_in->specific_bssid, | |
793 | sizeof(scan_cfg_out->specific_bssid)); | |
794 | ||
be0b281e AK |
795 | for (i = 0; i < user_scan_in->num_ssids; i++) { |
796 | ssid_len = user_scan_in->ssid_list[i].ssid_len; | |
5e6e3a92 BZ |
797 | |
798 | wildcard_ssid_tlv = | |
799 | (struct mwifiex_ie_types_wildcard_ssid_params *) | |
800 | tlv_pos; | |
801 | wildcard_ssid_tlv->header.type = | |
802 | cpu_to_le16(TLV_TYPE_WILDCARDSSID); | |
803 | wildcard_ssid_tlv->header.len = cpu_to_le16( | |
804 | (u16) (ssid_len + sizeof(wildcard_ssid_tlv-> | |
805 | max_ssid_length))); | |
fada1058 | 806 | |
be0b281e AK |
807 | /* |
808 | * max_ssid_length = 0 tells firmware to perform | |
809 | * specific scan for the SSID filled, whereas | |
810 | * max_ssid_length = IEEE80211_MAX_SSID_LEN is for | |
811 | * wildcard scan. | |
812 | */ | |
813 | if (ssid_len) | |
814 | wildcard_ssid_tlv->max_ssid_length = 0; | |
815 | else | |
816 | wildcard_ssid_tlv->max_ssid_length = | |
817 | IEEE80211_MAX_SSID_LEN; | |
5e6e3a92 BZ |
818 | |
819 | memcpy(wildcard_ssid_tlv->ssid, | |
be0b281e | 820 | user_scan_in->ssid_list[i].ssid, ssid_len); |
5e6e3a92 BZ |
821 | |
822 | tlv_pos += (sizeof(wildcard_ssid_tlv->header) | |
823 | + le16_to_cpu(wildcard_ssid_tlv->header.len)); | |
824 | ||
be0b281e AK |
825 | dev_dbg(adapter->dev, "info: scan: ssid[%d]: %s, %d\n", |
826 | i, wildcard_ssid_tlv->ssid, | |
5e6e3a92 BZ |
827 | wildcard_ssid_tlv->max_ssid_length); |
828 | ||
829 | /* Empty wildcard ssid with a maxlen will match many or | |
830 | potentially all SSIDs (maxlen == 32), therefore do | |
831 | not treat the scan as | |
832 | filtered. */ | |
833 | if (!ssid_len && wildcard_ssid_tlv->max_ssid_length) | |
834 | ssid_filter = false; | |
5e6e3a92 BZ |
835 | } |
836 | ||
837 | /* | |
838 | * The default number of channels sent in the command is low to | |
839 | * ensure the response buffer from the firmware does not | |
840 | * truncate scan results. That is not an issue with an SSID | |
841 | * or BSSID filter applied to the scan results in the firmware. | |
842 | */ | |
be0b281e | 843 | if ((i && ssid_filter) |
5e6e3a92 BZ |
844 | || memcmp(scan_cfg_out->specific_bssid, &zero_mac, |
845 | sizeof(zero_mac))) | |
846 | *filtered_scan = true; | |
847 | } else { | |
848 | scan_cfg_out->bss_mode = (u8) adapter->scan_mode; | |
849 | num_probes = adapter->scan_probes; | |
850 | } | |
851 | ||
852 | /* | |
853 | * If a specific BSSID or SSID is used, the number of channels in the | |
854 | * scan command will be increased to the absolute maximum. | |
855 | */ | |
856 | if (*filtered_scan) | |
857 | *max_chan_per_scan = MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN; | |
858 | else | |
859 | *max_chan_per_scan = MWIFIEX_CHANNELS_PER_SCAN_CMD; | |
860 | ||
861 | /* If the input config or adapter has the number of Probes set, | |
862 | add tlv */ | |
863 | if (num_probes) { | |
864 | ||
865 | dev_dbg(adapter->dev, "info: scan: num_probes = %d\n", | |
866 | num_probes); | |
867 | ||
868 | num_probes_tlv = (struct mwifiex_ie_types_num_probes *) tlv_pos; | |
869 | num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); | |
870 | num_probes_tlv->header.len = | |
871 | cpu_to_le16(sizeof(num_probes_tlv->num_probes)); | |
872 | num_probes_tlv->num_probes = cpu_to_le16((u16) num_probes); | |
873 | ||
874 | tlv_pos += sizeof(num_probes_tlv->header) + | |
875 | le16_to_cpu(num_probes_tlv->header.len); | |
876 | ||
877 | } | |
878 | ||
879 | /* Append rates tlv */ | |
880 | memset(rates, 0, sizeof(rates)); | |
881 | ||
882 | rates_size = mwifiex_get_supported_rates(priv, rates); | |
883 | ||
884 | rates_tlv = (struct mwifiex_ie_types_rates_param_set *) tlv_pos; | |
885 | rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES); | |
886 | rates_tlv->header.len = cpu_to_le16((u16) rates_size); | |
887 | memcpy(rates_tlv->rates, rates, rates_size); | |
888 | tlv_pos += sizeof(rates_tlv->header) + rates_size; | |
889 | ||
890 | dev_dbg(adapter->dev, "info: SCAN_CMD: Rates size = %d\n", rates_size); | |
891 | ||
892 | if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) | |
893 | && (priv->adapter->config_bands & BAND_GN | |
894 | || priv->adapter->config_bands & BAND_AN)) { | |
895 | ht_cap = (struct mwifiex_ie_types_htcap *) tlv_pos; | |
896 | memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap)); | |
897 | ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); | |
898 | ht_cap->header.len = | |
899 | cpu_to_le16(sizeof(struct ieee80211_ht_cap)); | |
a46b7b5c AK |
900 | radio_type = |
901 | mwifiex_band_to_radio_type(priv->adapter->config_bands); | |
902 | mwifiex_fill_cap_info(priv, radio_type, ht_cap); | |
5e6e3a92 BZ |
903 | tlv_pos += sizeof(struct mwifiex_ie_types_htcap); |
904 | } | |
905 | ||
906 | /* Append vendor specific IE TLV */ | |
907 | mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_SCAN, &tlv_pos); | |
908 | ||
909 | /* | |
910 | * Set the output for the channel TLV to the address in the tlv buffer | |
911 | * past any TLVs that were added in this function (SSID, num_probes). | |
912 | * Channel TLVs will be added past this for each scan command, | |
913 | * preserving the TLVs that were previously added. | |
914 | */ | |
915 | *chan_list_out = | |
916 | (struct mwifiex_ie_types_chan_list_param_set *) tlv_pos; | |
917 | ||
918 | if (user_scan_in && user_scan_in->chan_list[0].chan_number) { | |
919 | ||
920 | dev_dbg(adapter->dev, "info: Scan: Using supplied channel list\n"); | |
921 | ||
922 | for (chan_idx = 0; | |
923 | chan_idx < MWIFIEX_USER_SCAN_CHAN_MAX | |
924 | && user_scan_in->chan_list[chan_idx].chan_number; | |
925 | chan_idx++) { | |
926 | ||
927 | channel = user_scan_in->chan_list[chan_idx].chan_number; | |
928 | (scan_chan_list + chan_idx)->chan_number = channel; | |
929 | ||
930 | radio_type = | |
931 | user_scan_in->chan_list[chan_idx].radio_type; | |
932 | (scan_chan_list + chan_idx)->radio_type = radio_type; | |
933 | ||
934 | scan_type = user_scan_in->chan_list[chan_idx].scan_type; | |
935 | ||
936 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
937 | (scan_chan_list + | |
938 | chan_idx)->chan_scan_mode_bitmap | |
939 | |= MWIFIEX_PASSIVE_SCAN; | |
940 | else | |
941 | (scan_chan_list + | |
942 | chan_idx)->chan_scan_mode_bitmap | |
943 | &= ~MWIFIEX_PASSIVE_SCAN; | |
944 | ||
945 | if (user_scan_in->chan_list[chan_idx].scan_time) { | |
946 | scan_dur = (u16) user_scan_in-> | |
947 | chan_list[chan_idx].scan_time; | |
948 | } else { | |
949 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
950 | scan_dur = adapter->passive_scan_time; | |
951 | else if (*filtered_scan) | |
952 | scan_dur = adapter->specific_scan_time; | |
953 | else | |
954 | scan_dur = adapter->active_scan_time; | |
955 | } | |
956 | ||
957 | (scan_chan_list + chan_idx)->min_scan_time = | |
958 | cpu_to_le16(scan_dur); | |
959 | (scan_chan_list + chan_idx)->max_scan_time = | |
960 | cpu_to_le16(scan_dur); | |
961 | } | |
962 | ||
963 | /* Check if we are only scanning the current channel */ | |
964 | if ((chan_idx == 1) | |
965 | && (user_scan_in->chan_list[0].chan_number | |
966 | == priv->curr_bss_params.bss_descriptor.channel)) { | |
967 | *scan_current_only = true; | |
968 | dev_dbg(adapter->dev, | |
969 | "info: Scan: Scanning current channel only\n"); | |
970 | } | |
971 | ||
972 | } else { | |
973 | dev_dbg(adapter->dev, | |
974 | "info: Scan: Creating full region channel list\n"); | |
975 | mwifiex_scan_create_channel_list(priv, user_scan_in, | |
976 | scan_chan_list, | |
977 | *filtered_scan); | |
978 | } | |
979 | } | |
980 | ||
981 | /* | |
982 | * This function inspects the scan response buffer for pointers to | |
983 | * expected TLVs. | |
984 | * | |
985 | * TLVs can be included at the end of the scan response BSS information. | |
986 | * | |
987 | * Data in the buffer is parsed pointers to TLVs that can potentially | |
988 | * be passed back in the response. | |
989 | */ | |
990 | static void | |
991 | mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter *adapter, | |
992 | struct mwifiex_ie_types_data *tlv, | |
993 | u32 tlv_buf_size, u32 req_tlv_type, | |
994 | struct mwifiex_ie_types_data **tlv_data) | |
995 | { | |
996 | struct mwifiex_ie_types_data *current_tlv; | |
997 | u32 tlv_buf_left; | |
998 | u32 tlv_type; | |
999 | u32 tlv_len; | |
1000 | ||
1001 | current_tlv = tlv; | |
1002 | tlv_buf_left = tlv_buf_size; | |
1003 | *tlv_data = NULL; | |
1004 | ||
1005 | dev_dbg(adapter->dev, "info: SCAN_RESP: tlv_buf_size = %d\n", | |
1006 | tlv_buf_size); | |
1007 | ||
1008 | while (tlv_buf_left >= sizeof(struct mwifiex_ie_types_header)) { | |
1009 | ||
1010 | tlv_type = le16_to_cpu(current_tlv->header.type); | |
1011 | tlv_len = le16_to_cpu(current_tlv->header.len); | |
1012 | ||
1013 | if (sizeof(tlv->header) + tlv_len > tlv_buf_left) { | |
1014 | dev_err(adapter->dev, "SCAN_RESP: TLV buffer corrupt\n"); | |
1015 | break; | |
1016 | } | |
1017 | ||
1018 | if (req_tlv_type == tlv_type) { | |
1019 | switch (tlv_type) { | |
1020 | case TLV_TYPE_TSFTIMESTAMP: | |
1021 | dev_dbg(adapter->dev, "info: SCAN_RESP: TSF " | |
1022 | "timestamp TLV, len = %d\n", tlv_len); | |
1023 | *tlv_data = (struct mwifiex_ie_types_data *) | |
1024 | current_tlv; | |
1025 | break; | |
1026 | case TLV_TYPE_CHANNELBANDLIST: | |
1027 | dev_dbg(adapter->dev, "info: SCAN_RESP: channel" | |
1028 | " band list TLV, len = %d\n", tlv_len); | |
1029 | *tlv_data = (struct mwifiex_ie_types_data *) | |
1030 | current_tlv; | |
1031 | break; | |
1032 | default: | |
1033 | dev_err(adapter->dev, | |
1034 | "SCAN_RESP: unhandled TLV = %d\n", | |
1035 | tlv_type); | |
1036 | /* Give up, this seems corrupted */ | |
1037 | return; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | if (*tlv_data) | |
1042 | break; | |
1043 | ||
1044 | ||
1045 | tlv_buf_left -= (sizeof(tlv->header) + tlv_len); | |
1046 | current_tlv = | |
1047 | (struct mwifiex_ie_types_data *) (current_tlv->data + | |
1048 | tlv_len); | |
1049 | ||
1050 | } /* while */ | |
1051 | } | |
1052 | ||
1053 | /* | |
7c6fa2a8 AK |
1054 | * This function parses provided beacon buffer and updates |
1055 | * respective fields in bss descriptor structure. | |
5e6e3a92 | 1056 | */ |
7c6fa2a8 AK |
1057 | int |
1058 | mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter, | |
1059 | struct mwifiex_bssdescriptor *bss_entry, | |
1060 | u8 *ie_buf, u32 ie_len) | |
5e6e3a92 BZ |
1061 | { |
1062 | int ret = 0; | |
1063 | u8 element_id; | |
1064 | struct ieee_types_fh_param_set *fh_param_set; | |
1065 | struct ieee_types_ds_param_set *ds_param_set; | |
1066 | struct ieee_types_cf_param_set *cf_param_set; | |
1067 | struct ieee_types_ibss_param_set *ibss_param_set; | |
5e6e3a92 BZ |
1068 | u8 *current_ptr; |
1069 | u8 *rate; | |
1070 | u8 element_len; | |
1071 | u16 total_ie_len; | |
1072 | u8 bytes_to_copy; | |
1073 | u8 rate_size; | |
5e6e3a92 | 1074 | u8 found_data_rate_ie; |
7c6fa2a8 | 1075 | u32 bytes_left; |
5e6e3a92 BZ |
1076 | struct ieee_types_vendor_specific *vendor_ie; |
1077 | const u8 wpa_oui[4] = { 0x00, 0x50, 0xf2, 0x01 }; | |
1078 | const u8 wmm_oui[4] = { 0x00, 0x50, 0xf2, 0x02 }; | |
1079 | ||
1080 | found_data_rate_ie = false; | |
1081 | rate_size = 0; | |
7c6fa2a8 AK |
1082 | current_ptr = ie_buf; |
1083 | bytes_left = ie_len; | |
1084 | bss_entry->beacon_buf = ie_buf; | |
1085 | bss_entry->beacon_buf_size = ie_len; | |
5e6e3a92 BZ |
1086 | |
1087 | /* Process variable IE */ | |
7c6fa2a8 | 1088 | while (bytes_left >= 2) { |
5e6e3a92 BZ |
1089 | element_id = *current_ptr; |
1090 | element_len = *(current_ptr + 1); | |
1091 | total_ie_len = element_len + sizeof(struct ieee_types_header); | |
1092 | ||
7c6fa2a8 | 1093 | if (bytes_left < total_ie_len) { |
5e6e3a92 BZ |
1094 | dev_err(adapter->dev, "err: InterpretIE: in processing" |
1095 | " IE, bytes left < IE length\n"); | |
7c6fa2a8 | 1096 | return -1; |
5e6e3a92 BZ |
1097 | } |
1098 | switch (element_id) { | |
1099 | case WLAN_EID_SSID: | |
1100 | bss_entry->ssid.ssid_len = element_len; | |
1101 | memcpy(bss_entry->ssid.ssid, (current_ptr + 2), | |
1102 | element_len); | |
7c6fa2a8 AK |
1103 | dev_dbg(adapter->dev, "info: InterpretIE: ssid: " |
1104 | "%-32s\n", bss_entry->ssid.ssid); | |
5e6e3a92 BZ |
1105 | break; |
1106 | ||
1107 | case WLAN_EID_SUPP_RATES: | |
1108 | memcpy(bss_entry->data_rates, current_ptr + 2, | |
1109 | element_len); | |
1110 | memcpy(bss_entry->supported_rates, current_ptr + 2, | |
1111 | element_len); | |
1112 | rate_size = element_len; | |
1113 | found_data_rate_ie = true; | |
1114 | break; | |
1115 | ||
1116 | case WLAN_EID_FH_PARAMS: | |
1117 | fh_param_set = | |
1118 | (struct ieee_types_fh_param_set *) current_ptr; | |
1119 | memcpy(&bss_entry->phy_param_set.fh_param_set, | |
1120 | fh_param_set, | |
1121 | sizeof(struct ieee_types_fh_param_set)); | |
1122 | break; | |
1123 | ||
1124 | case WLAN_EID_DS_PARAMS: | |
1125 | ds_param_set = | |
1126 | (struct ieee_types_ds_param_set *) current_ptr; | |
1127 | ||
1128 | bss_entry->channel = ds_param_set->current_chan; | |
1129 | ||
1130 | memcpy(&bss_entry->phy_param_set.ds_param_set, | |
1131 | ds_param_set, | |
1132 | sizeof(struct ieee_types_ds_param_set)); | |
1133 | break; | |
1134 | ||
1135 | case WLAN_EID_CF_PARAMS: | |
1136 | cf_param_set = | |
1137 | (struct ieee_types_cf_param_set *) current_ptr; | |
1138 | memcpy(&bss_entry->ss_param_set.cf_param_set, | |
1139 | cf_param_set, | |
1140 | sizeof(struct ieee_types_cf_param_set)); | |
1141 | break; | |
1142 | ||
1143 | case WLAN_EID_IBSS_PARAMS: | |
1144 | ibss_param_set = | |
1145 | (struct ieee_types_ibss_param_set *) | |
1146 | current_ptr; | |
1147 | memcpy(&bss_entry->ss_param_set.ibss_param_set, | |
1148 | ibss_param_set, | |
1149 | sizeof(struct ieee_types_ibss_param_set)); | |
1150 | break; | |
1151 | ||
1152 | case WLAN_EID_ERP_INFO: | |
1153 | bss_entry->erp_flags = *(current_ptr + 2); | |
1154 | break; | |
1155 | ||
1156 | case WLAN_EID_EXT_SUPP_RATES: | |
1157 | /* | |
1158 | * Only process extended supported rate | |
1159 | * if data rate is already found. | |
1160 | * Data rate IE should come before | |
1161 | * extended supported rate IE | |
1162 | */ | |
1163 | if (found_data_rate_ie) { | |
1164 | if ((element_len + rate_size) > | |
1165 | MWIFIEX_SUPPORTED_RATES) | |
1166 | bytes_to_copy = | |
1167 | (MWIFIEX_SUPPORTED_RATES - | |
1168 | rate_size); | |
1169 | else | |
1170 | bytes_to_copy = element_len; | |
1171 | ||
1172 | rate = (u8 *) bss_entry->data_rates; | |
1173 | rate += rate_size; | |
1174 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1175 | ||
1176 | rate = (u8 *) bss_entry->supported_rates; | |
1177 | rate += rate_size; | |
1178 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1179 | } | |
1180 | break; | |
1181 | ||
1182 | case WLAN_EID_VENDOR_SPECIFIC: | |
1183 | vendor_ie = (struct ieee_types_vendor_specific *) | |
1184 | current_ptr; | |
1185 | ||
1186 | if (!memcmp | |
1187 | (vendor_ie->vend_hdr.oui, wpa_oui, | |
1188 | sizeof(wpa_oui))) { | |
1189 | bss_entry->bcn_wpa_ie = | |
1190 | (struct ieee_types_vendor_specific *) | |
1191 | current_ptr; | |
1192 | bss_entry->wpa_offset = (u16) (current_ptr - | |
1193 | bss_entry->beacon_buf); | |
1194 | } else if (!memcmp(vendor_ie->vend_hdr.oui, wmm_oui, | |
1195 | sizeof(wmm_oui))) { | |
1196 | if (total_ie_len == | |
1197 | sizeof(struct ieee_types_wmm_parameter) | |
1198 | || total_ie_len == | |
1199 | sizeof(struct ieee_types_wmm_info)) | |
1200 | /* | |
1201 | * Only accept and copy the WMM IE if | |
1202 | * it matches the size expected for the | |
1203 | * WMM Info IE or the WMM Parameter IE. | |
1204 | */ | |
1205 | memcpy((u8 *) &bss_entry->wmm_ie, | |
1206 | current_ptr, total_ie_len); | |
1207 | } | |
1208 | break; | |
1209 | case WLAN_EID_RSN: | |
1210 | bss_entry->bcn_rsn_ie = | |
1211 | (struct ieee_types_generic *) current_ptr; | |
1212 | bss_entry->rsn_offset = (u16) (current_ptr - | |
1213 | bss_entry->beacon_buf); | |
1214 | break; | |
1215 | case WLAN_EID_BSS_AC_ACCESS_DELAY: | |
1216 | bss_entry->bcn_wapi_ie = | |
1217 | (struct ieee_types_generic *) current_ptr; | |
1218 | bss_entry->wapi_offset = (u16) (current_ptr - | |
1219 | bss_entry->beacon_buf); | |
1220 | break; | |
1221 | case WLAN_EID_HT_CAPABILITY: | |
1222 | bss_entry->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
1223 | (current_ptr + | |
1224 | sizeof(struct ieee_types_header)); | |
1225 | bss_entry->ht_cap_offset = (u16) (current_ptr + | |
1226 | sizeof(struct ieee_types_header) - | |
1227 | bss_entry->beacon_buf); | |
1228 | break; | |
1229 | case WLAN_EID_HT_INFORMATION: | |
1230 | bss_entry->bcn_ht_info = (struct ieee80211_ht_info *) | |
1231 | (current_ptr + | |
1232 | sizeof(struct ieee_types_header)); | |
1233 | bss_entry->ht_info_offset = (u16) (current_ptr + | |
1234 | sizeof(struct ieee_types_header) - | |
1235 | bss_entry->beacon_buf); | |
1236 | break; | |
1237 | case WLAN_EID_BSS_COEX_2040: | |
1238 | bss_entry->bcn_bss_co_2040 = (u8 *) (current_ptr + | |
1239 | sizeof(struct ieee_types_header)); | |
1240 | bss_entry->bss_co_2040_offset = (u16) (current_ptr + | |
1241 | sizeof(struct ieee_types_header) - | |
1242 | bss_entry->beacon_buf); | |
1243 | break; | |
1244 | case WLAN_EID_EXT_CAPABILITY: | |
1245 | bss_entry->bcn_ext_cap = (u8 *) (current_ptr + | |
1246 | sizeof(struct ieee_types_header)); | |
1247 | bss_entry->ext_cap_offset = (u16) (current_ptr + | |
1248 | sizeof(struct ieee_types_header) - | |
1249 | bss_entry->beacon_buf); | |
1250 | break; | |
5e6e3a92 BZ |
1251 | default: |
1252 | break; | |
1253 | } | |
1254 | ||
1255 | current_ptr += element_len + 2; | |
1256 | ||
1257 | /* Need to account for IE ID and IE Len */ | |
7c6fa2a8 | 1258 | bytes_left -= (element_len + 2); |
5e6e3a92 | 1259 | |
7c6fa2a8 | 1260 | } /* while (bytes_left > 2) */ |
5e6e3a92 BZ |
1261 | return ret; |
1262 | } | |
1263 | ||
5e6e3a92 BZ |
1264 | /* |
1265 | * This function converts radio type scan parameter to a band configuration | |
1266 | * to be used in join command. | |
1267 | */ | |
1268 | static u8 | |
1269 | mwifiex_radio_type_to_band(u8 radio_type) | |
1270 | { | |
5e6e3a92 BZ |
1271 | switch (radio_type) { |
1272 | case HostCmd_SCAN_RADIO_TYPE_A: | |
636c4598 | 1273 | return BAND_A; |
5e6e3a92 BZ |
1274 | case HostCmd_SCAN_RADIO_TYPE_BG: |
1275 | default: | |
636c4598 | 1276 | return BAND_G; |
5e6e3a92 | 1277 | } |
5e6e3a92 BZ |
1278 | } |
1279 | ||
5e6e3a92 BZ |
1280 | /* |
1281 | * This is an internal function used to start a scan based on an input | |
1282 | * configuration. | |
1283 | * | |
1284 | * This uses the input user scan configuration information when provided in | |
1285 | * order to send the appropriate scan commands to firmware to populate or | |
1286 | * update the internal driver scan table. | |
1287 | */ | |
711825a0 AK |
1288 | static int mwifiex_scan_networks(struct mwifiex_private *priv, |
1289 | const struct mwifiex_user_scan_cfg *user_scan_in) | |
5e6e3a92 BZ |
1290 | { |
1291 | int ret = 0; | |
1292 | struct mwifiex_adapter *adapter = priv->adapter; | |
270e58e8 YAP |
1293 | struct cmd_ctrl_node *cmd_node; |
1294 | union mwifiex_scan_cmd_config_tlv *scan_cfg_out; | |
5e6e3a92 BZ |
1295 | struct mwifiex_ie_types_chan_list_param_set *chan_list_out; |
1296 | u32 buf_size; | |
1297 | struct mwifiex_chan_scan_param_set *scan_chan_list; | |
5e6e3a92 BZ |
1298 | u8 filtered_scan; |
1299 | u8 scan_current_chan_only; | |
1300 | u8 max_chan_per_scan; | |
1301 | unsigned long flags; | |
1302 | ||
600f5d90 | 1303 | if (adapter->scan_processing) { |
5e6e3a92 BZ |
1304 | dev_dbg(adapter->dev, "cmd: Scan already in process...\n"); |
1305 | return ret; | |
1306 | } | |
1307 | ||
1308 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1309 | adapter->scan_processing = true; | |
1310 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1311 | ||
600f5d90 | 1312 | if (priv->scan_block) { |
5e6e3a92 BZ |
1313 | dev_dbg(adapter->dev, |
1314 | "cmd: Scan is blocked during association...\n"); | |
1315 | return ret; | |
1316 | } | |
1317 | ||
1318 | scan_cfg_out = kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv), | |
1319 | GFP_KERNEL); | |
1320 | if (!scan_cfg_out) { | |
1321 | dev_err(adapter->dev, "failed to alloc scan_cfg_out\n"); | |
b53575ec | 1322 | return -ENOMEM; |
5e6e3a92 BZ |
1323 | } |
1324 | ||
1325 | buf_size = sizeof(struct mwifiex_chan_scan_param_set) * | |
1326 | MWIFIEX_USER_SCAN_CHAN_MAX; | |
1327 | scan_chan_list = kzalloc(buf_size, GFP_KERNEL); | |
1328 | if (!scan_chan_list) { | |
1329 | dev_err(adapter->dev, "failed to alloc scan_chan_list\n"); | |
1330 | kfree(scan_cfg_out); | |
b53575ec | 1331 | return -ENOMEM; |
5e6e3a92 BZ |
1332 | } |
1333 | ||
5e6e3a92 BZ |
1334 | mwifiex_scan_setup_scan_config(priv, user_scan_in, |
1335 | &scan_cfg_out->config, &chan_list_out, | |
1336 | scan_chan_list, &max_chan_per_scan, | |
1337 | &filtered_scan, &scan_current_chan_only); | |
1338 | ||
600f5d90 AK |
1339 | ret = mwifiex_scan_channel_list(priv, max_chan_per_scan, filtered_scan, |
1340 | &scan_cfg_out->config, chan_list_out, | |
1341 | scan_chan_list); | |
5e6e3a92 BZ |
1342 | |
1343 | /* Get scan command from scan_pending_q and put to cmd_pending_q */ | |
1344 | if (!ret) { | |
1345 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1346 | if (!list_empty(&adapter->scan_pending_q)) { | |
1347 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
1348 | struct cmd_ctrl_node, list); | |
1349 | list_del(&cmd_node->list); | |
1350 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
1351 | flags); | |
efaaa8b8 | 1352 | adapter->cmd_queued = cmd_node; |
5e6e3a92 BZ |
1353 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, |
1354 | true); | |
1355 | } else { | |
1356 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
1357 | flags); | |
1358 | } | |
5e6e3a92 BZ |
1359 | } else { |
1360 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1361 | adapter->scan_processing = true; | |
1362 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1363 | } | |
1364 | ||
1365 | kfree(scan_cfg_out); | |
1366 | kfree(scan_chan_list); | |
1367 | return ret; | |
1368 | } | |
1369 | ||
711825a0 AK |
1370 | /* |
1371 | * Sends IOCTL request to start a scan with user configurations. | |
1372 | * | |
1373 | * This function allocates the IOCTL request buffer, fills it | |
1374 | * with requisite parameters and calls the IOCTL handler. | |
1375 | * | |
1376 | * Upon completion, it also generates a wireless event to notify | |
1377 | * applications. | |
1378 | */ | |
1379 | int mwifiex_set_user_scan_ioctl(struct mwifiex_private *priv, | |
1380 | struct mwifiex_user_scan_cfg *scan_req) | |
1381 | { | |
1382 | int status; | |
1383 | ||
711825a0 | 1384 | status = mwifiex_scan_networks(priv, scan_req); |
38c9d664 | 1385 | queue_work(priv->adapter->workqueue, &priv->adapter->main_work); |
711825a0 AK |
1386 | |
1387 | return status; | |
1388 | } | |
1389 | ||
5e6e3a92 BZ |
1390 | /* |
1391 | * This function prepares a scan command to be sent to the firmware. | |
1392 | * | |
1393 | * This uses the scan command configuration sent to the command processing | |
1394 | * module in command preparation stage to configure a scan command structure | |
1395 | * to send to firmware. | |
1396 | * | |
1397 | * The fixed fields specifying the BSS type and BSSID filters as well as a | |
1398 | * variable number/length of TLVs are sent in the command to firmware. | |
1399 | * | |
1400 | * Preparation also includes - | |
1401 | * - Setting command ID, and proper size | |
1402 | * - Ensuring correct endian-ness | |
1403 | */ | |
a5ffddb7 AK |
1404 | int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command *cmd, |
1405 | struct mwifiex_scan_cmd_config *scan_cfg) | |
5e6e3a92 BZ |
1406 | { |
1407 | struct host_cmd_ds_802_11_scan *scan_cmd = &cmd->params.scan; | |
5e6e3a92 BZ |
1408 | |
1409 | /* Set fixed field variables in scan command */ | |
1410 | scan_cmd->bss_mode = scan_cfg->bss_mode; | |
1411 | memcpy(scan_cmd->bssid, scan_cfg->specific_bssid, | |
1412 | sizeof(scan_cmd->bssid)); | |
1413 | memcpy(scan_cmd->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len); | |
1414 | ||
1415 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN); | |
1416 | ||
1417 | /* Size is equal to the sizeof(fixed portions) + the TLV len + header */ | |
1418 | cmd->size = cpu_to_le16((u16) (sizeof(scan_cmd->bss_mode) | |
1419 | + sizeof(scan_cmd->bssid) | |
1420 | + scan_cfg->tlv_buf_len + S_DS_GEN)); | |
1421 | ||
1422 | return 0; | |
1423 | } | |
1424 | ||
7c6fa2a8 AK |
1425 | /* |
1426 | * This function checks compatibility of requested network with current | |
1427 | * driver settings. | |
1428 | */ | |
1429 | int mwifiex_check_network_compatibility(struct mwifiex_private *priv, | |
1430 | struct mwifiex_bssdescriptor *bss_desc) | |
1431 | { | |
1432 | int ret = -1; | |
1433 | ||
1434 | if (!bss_desc) | |
1435 | return -1; | |
1436 | ||
1437 | if ((mwifiex_get_cfp_by_band_and_channel_from_cfg80211(priv, | |
1438 | (u8) bss_desc->bss_band, (u16) bss_desc->channel))) { | |
1439 | switch (priv->bss_mode) { | |
1440 | case NL80211_IFTYPE_STATION: | |
1441 | case NL80211_IFTYPE_ADHOC: | |
1442 | ret = mwifiex_is_network_compatible(priv, bss_desc, | |
1443 | priv->bss_mode); | |
1444 | if (ret) | |
1445 | dev_err(priv->adapter->dev, "cannot find ssid " | |
1446 | "%s\n", bss_desc->ssid.ssid); | |
1447 | break; | |
1448 | default: | |
1449 | ret = 0; | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | return ret; | |
1454 | } | |
1455 | ||
1456 | static int | |
5116f3ce AK |
1457 | mwifiex_update_curr_bss_params(struct mwifiex_private *priv, u8 *bssid, |
1458 | s32 rssi, const u8 *ie_buf, size_t ie_len, | |
1459 | u16 beacon_period, u16 cap_info_bitmap, u8 band) | |
7c6fa2a8 | 1460 | { |
db652e4b | 1461 | struct mwifiex_bssdescriptor *bss_desc; |
7c6fa2a8 AK |
1462 | int ret; |
1463 | unsigned long flags; | |
1464 | u8 *beacon_ie; | |
1465 | ||
1466 | /* Allocate and fill new bss descriptor */ | |
1467 | bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor), | |
1468 | GFP_KERNEL); | |
1469 | if (!bss_desc) { | |
1470 | dev_err(priv->adapter->dev, " failed to alloc bss_desc\n"); | |
1471 | return -ENOMEM; | |
1472 | } | |
5982b47a YAP |
1473 | |
1474 | beacon_ie = kmemdup(ie_buf, ie_len, GFP_KERNEL); | |
f7503230 | 1475 | if (!beacon_ie) { |
db652e4b | 1476 | kfree(bss_desc); |
f7503230 | 1477 | dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n"); |
7c6fa2a8 AK |
1478 | return -ENOMEM; |
1479 | } | |
7c6fa2a8 AK |
1480 | |
1481 | ret = mwifiex_fill_new_bss_desc(priv, bssid, rssi, beacon_ie, | |
1482 | ie_len, beacon_period, | |
5116f3ce | 1483 | cap_info_bitmap, band, bss_desc); |
7c6fa2a8 AK |
1484 | if (ret) |
1485 | goto done; | |
1486 | ||
1487 | ret = mwifiex_check_network_compatibility(priv, bss_desc); | |
1488 | if (ret) | |
1489 | goto done; | |
1490 | ||
1491 | /* Update current bss descriptor parameters */ | |
1492 | spin_lock_irqsave(&priv->curr_bcn_buf_lock, flags); | |
1493 | priv->curr_bss_params.bss_descriptor.bcn_wpa_ie = NULL; | |
1494 | priv->curr_bss_params.bss_descriptor.wpa_offset = 0; | |
1495 | priv->curr_bss_params.bss_descriptor.bcn_rsn_ie = NULL; | |
1496 | priv->curr_bss_params.bss_descriptor.rsn_offset = 0; | |
1497 | priv->curr_bss_params.bss_descriptor.bcn_wapi_ie = NULL; | |
1498 | priv->curr_bss_params.bss_descriptor.wapi_offset = 0; | |
1499 | priv->curr_bss_params.bss_descriptor.bcn_ht_cap = NULL; | |
1500 | priv->curr_bss_params.bss_descriptor.ht_cap_offset = | |
1501 | 0; | |
1502 | priv->curr_bss_params.bss_descriptor.bcn_ht_info = NULL; | |
1503 | priv->curr_bss_params.bss_descriptor.ht_info_offset = | |
1504 | 0; | |
1505 | priv->curr_bss_params.bss_descriptor.bcn_bss_co_2040 = | |
1506 | NULL; | |
1507 | priv->curr_bss_params.bss_descriptor. | |
1508 | bss_co_2040_offset = 0; | |
1509 | priv->curr_bss_params.bss_descriptor.bcn_ext_cap = NULL; | |
1510 | priv->curr_bss_params.bss_descriptor.ext_cap_offset = 0; | |
1511 | priv->curr_bss_params.bss_descriptor.beacon_buf = NULL; | |
1512 | priv->curr_bss_params.bss_descriptor.beacon_buf_size = | |
1513 | 0; | |
1514 | ||
1515 | /* Make a copy of current BSSID descriptor */ | |
1516 | memcpy(&priv->curr_bss_params.bss_descriptor, bss_desc, | |
1517 | sizeof(priv->curr_bss_params.bss_descriptor)); | |
1518 | mwifiex_save_curr_bcn(priv); | |
1519 | spin_unlock_irqrestore(&priv->curr_bcn_buf_lock, flags); | |
1520 | ||
1521 | done: | |
1522 | kfree(bss_desc); | |
1523 | kfree(beacon_ie); | |
1524 | return 0; | |
1525 | } | |
1526 | ||
5e6e3a92 BZ |
1527 | /* |
1528 | * This function handles the command response of scan. | |
1529 | * | |
1530 | * The response buffer for the scan command has the following | |
1531 | * memory layout: | |
1532 | * | |
1533 | * .-------------------------------------------------------------. | |
1534 | * | Header (4 * sizeof(t_u16)): Standard command response hdr | | |
1535 | * .-------------------------------------------------------------. | |
1536 | * | BufSize (t_u16) : sizeof the BSS Description data | | |
1537 | * .-------------------------------------------------------------. | |
1538 | * | NumOfSet (t_u8) : Number of BSS Descs returned | | |
1539 | * .-------------------------------------------------------------. | |
1540 | * | BSSDescription data (variable, size given in BufSize) | | |
1541 | * .-------------------------------------------------------------. | |
1542 | * | TLV data (variable, size calculated using Header->Size, | | |
1543 | * | BufSize and sizeof the fixed fields above) | | |
1544 | * .-------------------------------------------------------------. | |
1545 | */ | |
1546 | int mwifiex_ret_802_11_scan(struct mwifiex_private *priv, | |
600f5d90 | 1547 | struct host_cmd_ds_command *resp) |
5e6e3a92 BZ |
1548 | { |
1549 | int ret = 0; | |
1550 | struct mwifiex_adapter *adapter = priv->adapter; | |
270e58e8 YAP |
1551 | struct cmd_ctrl_node *cmd_node; |
1552 | struct host_cmd_ds_802_11_scan_rsp *scan_rsp; | |
5e6e3a92 BZ |
1553 | struct mwifiex_ie_types_data *tlv_data; |
1554 | struct mwifiex_ie_types_tsf_timestamp *tsf_tlv; | |
1555 | u8 *bss_info; | |
1556 | u32 scan_resp_size; | |
1557 | u32 bytes_left; | |
5e6e3a92 BZ |
1558 | u32 idx; |
1559 | u32 tlv_buf_size; | |
5e6e3a92 BZ |
1560 | struct mwifiex_chan_freq_power *cfp; |
1561 | struct mwifiex_ie_types_chan_band_list_param_set *chan_band_tlv; | |
1562 | struct chan_band_param_set *chan_band; | |
5e6e3a92 BZ |
1563 | u8 is_bgscan_resp; |
1564 | unsigned long flags; | |
5116f3ce | 1565 | struct cfg80211_bss *bss; |
5e6e3a92 BZ |
1566 | |
1567 | is_bgscan_resp = (le16_to_cpu(resp->command) | |
1568 | == HostCmd_CMD_802_11_BG_SCAN_QUERY); | |
1569 | if (is_bgscan_resp) | |
1570 | scan_rsp = &resp->params.bg_scan_query_resp.scan_resp; | |
1571 | else | |
1572 | scan_rsp = &resp->params.scan_resp; | |
1573 | ||
1574 | ||
67a50035 | 1575 | if (scan_rsp->number_of_sets > MWIFIEX_MAX_AP) { |
5e6e3a92 BZ |
1576 | dev_err(adapter->dev, "SCAN_RESP: too many AP returned (%d)\n", |
1577 | scan_rsp->number_of_sets); | |
1578 | ret = -1; | |
1579 | goto done; | |
1580 | } | |
1581 | ||
1582 | bytes_left = le16_to_cpu(scan_rsp->bss_descript_size); | |
1583 | dev_dbg(adapter->dev, "info: SCAN_RESP: bss_descript_size %d\n", | |
1584 | bytes_left); | |
1585 | ||
1586 | scan_resp_size = le16_to_cpu(resp->size); | |
1587 | ||
1588 | dev_dbg(adapter->dev, | |
1589 | "info: SCAN_RESP: returned %d APs before parsing\n", | |
1590 | scan_rsp->number_of_sets); | |
1591 | ||
5e6e3a92 BZ |
1592 | bss_info = scan_rsp->bss_desc_and_tlv_buffer; |
1593 | ||
1594 | /* | |
1595 | * The size of the TLV buffer is equal to the entire command response | |
1596 | * size (scan_resp_size) minus the fixed fields (sizeof()'s), the | |
1597 | * BSS Descriptions (bss_descript_size as bytesLef) and the command | |
1598 | * response header (S_DS_GEN) | |
1599 | */ | |
1600 | tlv_buf_size = scan_resp_size - (bytes_left | |
1601 | + sizeof(scan_rsp->bss_descript_size) | |
1602 | + sizeof(scan_rsp->number_of_sets) | |
1603 | + S_DS_GEN); | |
1604 | ||
1605 | tlv_data = (struct mwifiex_ie_types_data *) (scan_rsp-> | |
1606 | bss_desc_and_tlv_buffer + | |
1607 | bytes_left); | |
1608 | ||
1609 | /* Search the TLV buffer space in the scan response for any valid | |
1610 | TLVs */ | |
1611 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
1612 | TLV_TYPE_TSFTIMESTAMP, | |
1613 | (struct mwifiex_ie_types_data **) | |
1614 | &tsf_tlv); | |
1615 | ||
1616 | /* Search the TLV buffer space in the scan response for any valid | |
1617 | TLVs */ | |
1618 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
1619 | TLV_TYPE_CHANNELBANDLIST, | |
1620 | (struct mwifiex_ie_types_data **) | |
1621 | &chan_band_tlv); | |
1622 | ||
5e6e3a92 | 1623 | for (idx = 0; idx < scan_rsp->number_of_sets && bytes_left; idx++) { |
7c6fa2a8 AK |
1624 | u8 bssid[ETH_ALEN]; |
1625 | s32 rssi; | |
1626 | const u8 *ie_buf; | |
1627 | size_t ie_len; | |
1628 | int channel = -1; | |
1629 | u64 network_tsf = 0; | |
1630 | u16 beacon_size = 0; | |
1631 | u32 curr_bcn_bytes; | |
1632 | u32 freq; | |
1633 | u16 beacon_period; | |
1634 | u16 cap_info_bitmap; | |
1635 | u8 *current_ptr; | |
1636 | struct mwifiex_bcn_param *bcn_param; | |
1637 | ||
1638 | if (bytes_left >= sizeof(beacon_size)) { | |
1639 | /* Extract & convert beacon size from command buffer */ | |
1640 | memcpy(&beacon_size, bss_info, sizeof(beacon_size)); | |
1641 | bytes_left -= sizeof(beacon_size); | |
1642 | bss_info += sizeof(beacon_size); | |
5e6e3a92 BZ |
1643 | } |
1644 | ||
7c6fa2a8 AK |
1645 | if (!beacon_size || beacon_size > bytes_left) { |
1646 | bss_info += bytes_left; | |
1647 | bytes_left = 0; | |
1648 | return -1; | |
1649 | } | |
5e6e3a92 | 1650 | |
7c6fa2a8 AK |
1651 | /* Initialize the current working beacon pointer for this BSS |
1652 | * iteration */ | |
1653 | current_ptr = bss_info; | |
1654 | ||
1655 | /* Advance the return beacon pointer past the current beacon */ | |
1656 | bss_info += beacon_size; | |
1657 | bytes_left -= beacon_size; | |
1658 | ||
1659 | curr_bcn_bytes = beacon_size; | |
1660 | ||
1661 | /* | |
1662 | * First 5 fields are bssid, RSSI, time stamp, beacon interval, | |
1663 | * and capability information | |
1664 | */ | |
1665 | if (curr_bcn_bytes < sizeof(struct mwifiex_bcn_param)) { | |
1666 | dev_err(adapter->dev, "InterpretIE: not enough bytes left\n"); | |
1667 | continue; | |
1668 | } | |
1669 | bcn_param = (struct mwifiex_bcn_param *)current_ptr; | |
1670 | current_ptr += sizeof(*bcn_param); | |
1671 | curr_bcn_bytes -= sizeof(*bcn_param); | |
1672 | ||
1673 | memcpy(bssid, bcn_param->bssid, ETH_ALEN); | |
1674 | ||
1675 | rssi = (s32) (bcn_param->rssi); | |
1676 | dev_dbg(adapter->dev, "info: InterpretIE: RSSI=%02X\n", | |
1677 | rssi); | |
1678 | ||
1679 | beacon_period = le16_to_cpu(bcn_param->beacon_period); | |
1680 | ||
1681 | cap_info_bitmap = le16_to_cpu(bcn_param->cap_info_bitmap); | |
1682 | dev_dbg(adapter->dev, "info: InterpretIE: capabilities=0x%X\n", | |
1683 | cap_info_bitmap); | |
1684 | ||
1685 | /* Rest of the current buffer are IE's */ | |
1686 | ie_buf = current_ptr; | |
1687 | ie_len = curr_bcn_bytes; | |
1688 | dev_dbg(adapter->dev, "info: InterpretIE: IELength for this AP" | |
1689 | " = %d\n", curr_bcn_bytes); | |
1690 | ||
1691 | while (curr_bcn_bytes >= sizeof(struct ieee_types_header)) { | |
1692 | u8 element_id, element_len; | |
1693 | ||
1694 | element_id = *current_ptr; | |
1695 | element_len = *(current_ptr + 1); | |
1696 | if (curr_bcn_bytes < element_len + | |
1697 | sizeof(struct ieee_types_header)) { | |
1698 | dev_err(priv->adapter->dev, "%s: in processing" | |
1699 | " IE, bytes left < IE length\n", | |
1700 | __func__); | |
1701 | goto done; | |
5e6e3a92 | 1702 | } |
7c6fa2a8 AK |
1703 | if (element_id == WLAN_EID_DS_PARAMS) { |
1704 | channel = *(u8 *) (current_ptr + | |
1705 | sizeof(struct ieee_types_header)); | |
5e6e3a92 BZ |
1706 | break; |
1707 | } | |
7c6fa2a8 AK |
1708 | |
1709 | current_ptr += element_len + | |
1710 | sizeof(struct ieee_types_header); | |
1711 | curr_bcn_bytes -= element_len + | |
1712 | sizeof(struct ieee_types_header); | |
5e6e3a92 BZ |
1713 | } |
1714 | ||
5e6e3a92 BZ |
1715 | /* |
1716 | * If the TSF TLV was appended to the scan results, save this | |
1717 | * entry's TSF value in the networkTSF field.The networkTSF is | |
1718 | * the firmware's TSF value at the time the beacon or probe | |
1719 | * response was received. | |
1720 | */ | |
7c6fa2a8 AK |
1721 | if (tsf_tlv) |
1722 | memcpy(&network_tsf, | |
1723 | &tsf_tlv->tsf_data[idx * TSF_DATA_SIZE], | |
1724 | sizeof(network_tsf)); | |
1725 | ||
1726 | if (channel != -1) { | |
1727 | struct ieee80211_channel *chan; | |
1728 | u8 band; | |
1729 | ||
1730 | band = BAND_G; | |
1731 | if (chan_band_tlv) { | |
1732 | chan_band = | |
1733 | &chan_band_tlv->chan_band_param[idx]; | |
1734 | band = mwifiex_radio_type_to_band( | |
1735 | chan_band->radio_type | |
1736 | & (BIT(0) | BIT(1))); | |
1737 | } | |
5e6e3a92 | 1738 | |
7c6fa2a8 AK |
1739 | cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211( |
1740 | priv, (u8)band, (u16)channel); | |
5e6e3a92 | 1741 | |
7c6fa2a8 | 1742 | freq = cfp ? cfp->freq : 0; |
5e6e3a92 | 1743 | |
7c6fa2a8 | 1744 | chan = ieee80211_get_channel(priv->wdev->wiphy, freq); |
5e6e3a92 | 1745 | |
7c6fa2a8 | 1746 | if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) { |
5116f3ce AK |
1747 | bss = cfg80211_inform_bss(priv->wdev->wiphy, |
1748 | chan, bssid, network_tsf, | |
1749 | cap_info_bitmap, beacon_period, | |
1750 | ie_buf, ie_len, rssi, GFP_KERNEL); | |
1751 | *(u8 *)bss->priv = band; | |
aa95a48d | 1752 | cfg80211_put_bss(bss); |
5e6e3a92 | 1753 | |
7c6fa2a8 AK |
1754 | if (priv->media_connected && !memcmp(bssid, |
1755 | priv->curr_bss_params.bss_descriptor | |
1756 | .mac_address, ETH_ALEN)) | |
1757 | mwifiex_update_curr_bss_params(priv, | |
1758 | bssid, rssi, ie_buf, | |
1759 | ie_len, beacon_period, | |
5116f3ce | 1760 | cap_info_bitmap, band); |
7c6fa2a8 AK |
1761 | } |
1762 | } else { | |
1763 | dev_dbg(adapter->dev, "missing BSS channel IE\n"); | |
1764 | } | |
1765 | } | |
5e6e3a92 BZ |
1766 | |
1767 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1768 | if (list_empty(&adapter->scan_pending_q)) { | |
1769 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1770 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1771 | adapter->scan_processing = false; | |
1772 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
5e6e3a92 BZ |
1773 | |
1774 | /* Need to indicate IOCTL complete */ | |
600f5d90 AK |
1775 | if (adapter->curr_cmd->wait_q_enabled) { |
1776 | adapter->cmd_wait_q.status = 0; | |
efaaa8b8 | 1777 | mwifiex_complete_cmd(adapter, adapter->curr_cmd); |
5e6e3a92 BZ |
1778 | } |
1779 | if (priv->report_scan_result) | |
1780 | priv->report_scan_result = false; | |
1781 | if (priv->scan_pending_on_block) { | |
1782 | priv->scan_pending_on_block = false; | |
1783 | up(&priv->async_sem); | |
1784 | } | |
1785 | ||
38c9d664 AK |
1786 | if (priv->user_scan_cfg) { |
1787 | dev_dbg(priv->adapter->dev, "info: %s: sending scan " | |
1788 | "results\n", __func__); | |
1789 | cfg80211_scan_done(priv->scan_request, 0); | |
1790 | priv->scan_request = NULL; | |
1791 | kfree(priv->user_scan_cfg); | |
1792 | priv->user_scan_cfg = NULL; | |
1793 | } | |
5e6e3a92 BZ |
1794 | } else { |
1795 | /* Get scan command from scan_pending_q and put to | |
1796 | cmd_pending_q */ | |
1797 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
1798 | struct cmd_ctrl_node, list); | |
1799 | list_del(&cmd_node->list); | |
1800 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1801 | ||
1802 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true); | |
1803 | } | |
1804 | ||
1805 | done: | |
5e6e3a92 BZ |
1806 | return ret; |
1807 | } | |
1808 | ||
1809 | /* | |
1810 | * This function prepares command for background scan query. | |
1811 | * | |
1812 | * Preparation includes - | |
1813 | * - Setting command ID and proper size | |
1814 | * - Setting background scan flush parameter | |
1815 | * - Ensuring correct endian-ness | |
1816 | */ | |
572e8f3e | 1817 | int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command *cmd) |
5e6e3a92 BZ |
1818 | { |
1819 | struct host_cmd_ds_802_11_bg_scan_query *bg_query = | |
1820 | &cmd->params.bg_scan_query; | |
1821 | ||
1822 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY); | |
1823 | cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query) | |
1824 | + S_DS_GEN); | |
1825 | ||
1826 | bg_query->flush = 1; | |
1827 | ||
1828 | return 0; | |
1829 | } | |
1830 | ||
5e6e3a92 BZ |
1831 | /* |
1832 | * This function inserts scan command node to the scan pending queue. | |
1833 | */ | |
1834 | void | |
1835 | mwifiex_queue_scan_cmd(struct mwifiex_private *priv, | |
1836 | struct cmd_ctrl_node *cmd_node) | |
1837 | { | |
1838 | struct mwifiex_adapter *adapter = priv->adapter; | |
1839 | unsigned long flags; | |
1840 | ||
600f5d90 | 1841 | cmd_node->wait_q_enabled = true; |
efaaa8b8 | 1842 | cmd_node->condition = &adapter->scan_wait_q_woken; |
5e6e3a92 BZ |
1843 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); |
1844 | list_add_tail(&cmd_node->list, &adapter->scan_pending_q); | |
1845 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1846 | } | |
1847 | ||
5e6e3a92 BZ |
1848 | /* |
1849 | * This function sends a scan command for all available channels to the | |
1850 | * firmware, filtered on a specific SSID. | |
1851 | */ | |
1852 | static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv, | |
b9be5f39 | 1853 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 BZ |
1854 | { |
1855 | struct mwifiex_adapter *adapter = priv->adapter; | |
1856 | int ret = 0; | |
1857 | struct mwifiex_user_scan_cfg *scan_cfg; | |
1858 | ||
1859 | if (!req_ssid) | |
1860 | return -1; | |
1861 | ||
600f5d90 | 1862 | if (adapter->scan_processing) { |
5e6e3a92 BZ |
1863 | dev_dbg(adapter->dev, "cmd: Scan already in process...\n"); |
1864 | return ret; | |
1865 | } | |
1866 | ||
600f5d90 | 1867 | if (priv->scan_block) { |
5e6e3a92 BZ |
1868 | dev_dbg(adapter->dev, |
1869 | "cmd: Scan is blocked during association...\n"); | |
1870 | return ret; | |
1871 | } | |
1872 | ||
5e6e3a92 BZ |
1873 | scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg), GFP_KERNEL); |
1874 | if (!scan_cfg) { | |
1875 | dev_err(adapter->dev, "failed to alloc scan_cfg\n"); | |
b53575ec | 1876 | return -ENOMEM; |
5e6e3a92 BZ |
1877 | } |
1878 | ||
be0b281e AK |
1879 | scan_cfg->ssid_list = req_ssid; |
1880 | scan_cfg->num_ssids = 1; | |
5e6e3a92 | 1881 | |
600f5d90 | 1882 | ret = mwifiex_scan_networks(priv, scan_cfg); |
5e6e3a92 BZ |
1883 | |
1884 | kfree(scan_cfg); | |
1885 | return ret; | |
1886 | } | |
1887 | ||
1888 | /* | |
1889 | * Sends IOCTL request to start a scan. | |
1890 | * | |
1891 | * This function allocates the IOCTL request buffer, fills it | |
1892 | * with requisite parameters and calls the IOCTL handler. | |
1893 | * | |
1894 | * Scan command can be issued for both normal scan and specific SSID | |
1895 | * scan, depending upon whether an SSID is provided or not. | |
1896 | */ | |
600f5d90 | 1897 | int mwifiex_request_scan(struct mwifiex_private *priv, |
b9be5f39 | 1898 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 | 1899 | { |
270e58e8 | 1900 | int ret; |
5e6e3a92 BZ |
1901 | |
1902 | if (down_interruptible(&priv->async_sem)) { | |
1903 | dev_err(priv->adapter->dev, "%s: acquire semaphore\n", | |
1904 | __func__); | |
1905 | return -1; | |
1906 | } | |
1907 | priv->scan_pending_on_block = true; | |
1908 | ||
efaaa8b8 | 1909 | priv->adapter->scan_wait_q_woken = false; |
5e6e3a92 BZ |
1910 | |
1911 | if (req_ssid && req_ssid->ssid_len != 0) | |
1912 | /* Specific SSID scan */ | |
600f5d90 | 1913 | ret = mwifiex_scan_specific_ssid(priv, req_ssid); |
5e6e3a92 BZ |
1914 | else |
1915 | /* Normal scan */ | |
600f5d90 AK |
1916 | ret = mwifiex_scan_networks(priv, NULL); |
1917 | ||
1918 | if (!ret) | |
1919 | ret = mwifiex_wait_queue_complete(priv->adapter); | |
1920 | ||
5e6e3a92 BZ |
1921 | if (ret == -1) { |
1922 | priv->scan_pending_on_block = false; | |
1923 | up(&priv->async_sem); | |
1924 | } | |
600f5d90 | 1925 | |
5e6e3a92 BZ |
1926 | return ret; |
1927 | } | |
1928 | ||
1929 | /* | |
1930 | * This function appends the vendor specific IE TLV to a buffer. | |
1931 | */ | |
1932 | int | |
1933 | mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv, | |
1934 | u16 vsie_mask, u8 **buffer) | |
1935 | { | |
1936 | int id, ret_len = 0; | |
1937 | struct mwifiex_ie_types_vendor_param_set *vs_param_set; | |
1938 | ||
1939 | if (!buffer) | |
1940 | return 0; | |
1941 | if (!(*buffer)) | |
1942 | return 0; | |
1943 | ||
1944 | /* | |
1945 | * Traverse through the saved vendor specific IE array and append | |
1946 | * the selected(scan/assoc/adhoc) IE as TLV to the command | |
1947 | */ | |
1948 | for (id = 0; id < MWIFIEX_MAX_VSIE_NUM; id++) { | |
1949 | if (priv->vs_ie[id].mask & vsie_mask) { | |
1950 | vs_param_set = | |
1951 | (struct mwifiex_ie_types_vendor_param_set *) | |
1952 | *buffer; | |
1953 | vs_param_set->header.type = | |
1954 | cpu_to_le16(TLV_TYPE_PASSTHROUGH); | |
1955 | vs_param_set->header.len = | |
1956 | cpu_to_le16((((u16) priv->vs_ie[id].ie[1]) | |
1957 | & 0x00FF) + 2); | |
1958 | memcpy(vs_param_set->ie, priv->vs_ie[id].ie, | |
1959 | le16_to_cpu(vs_param_set->header.len)); | |
1960 | *buffer += le16_to_cpu(vs_param_set->header.len) + | |
1961 | sizeof(struct mwifiex_ie_types_header); | |
1962 | ret_len += le16_to_cpu(vs_param_set->header.len) + | |
1963 | sizeof(struct mwifiex_ie_types_header); | |
1964 | } | |
1965 | } | |
1966 | return ret_len; | |
1967 | } | |
1968 | ||
1969 | /* | |
1970 | * This function saves a beacon buffer of the current BSS descriptor. | |
1971 | * | |
1972 | * The current beacon buffer is saved so that it can be restored in the | |
1973 | * following cases that makes the beacon buffer not to contain the current | |
1974 | * ssid's beacon buffer. | |
1975 | * - The current ssid was not found somehow in the last scan. | |
1976 | * - The current ssid was the last entry of the scan table and overloaded. | |
1977 | */ | |
1978 | void | |
1979 | mwifiex_save_curr_bcn(struct mwifiex_private *priv) | |
1980 | { | |
1981 | struct mwifiex_bssdescriptor *curr_bss = | |
1982 | &priv->curr_bss_params.bss_descriptor; | |
1983 | ||
030fe797 AK |
1984 | if (!curr_bss->beacon_buf_size) |
1985 | return; | |
5e6e3a92 | 1986 | |
030fe797 AK |
1987 | /* allocate beacon buffer at 1st time; or if it's size has changed */ |
1988 | if (!priv->curr_bcn_buf || | |
1989 | priv->curr_bcn_size != curr_bss->beacon_buf_size) { | |
5e6e3a92 | 1990 | priv->curr_bcn_size = curr_bss->beacon_buf_size; |
5e6e3a92 | 1991 | |
030fe797 | 1992 | kfree(priv->curr_bcn_buf); |
5982b47a | 1993 | priv->curr_bcn_buf = kmalloc(curr_bss->beacon_buf_size, |
75ac9a28 | 1994 | GFP_ATOMIC); |
5e6e3a92 BZ |
1995 | if (!priv->curr_bcn_buf) { |
1996 | dev_err(priv->adapter->dev, | |
1997 | "failed to alloc curr_bcn_buf\n"); | |
030fe797 | 1998 | return; |
5e6e3a92 BZ |
1999 | } |
2000 | } | |
030fe797 AK |
2001 | |
2002 | memcpy(priv->curr_bcn_buf, curr_bss->beacon_buf, | |
2003 | curr_bss->beacon_buf_size); | |
2004 | dev_dbg(priv->adapter->dev, "info: current beacon saved %d\n", | |
2005 | priv->curr_bcn_size); | |
7c6fa2a8 AK |
2006 | |
2007 | curr_bss->beacon_buf = priv->curr_bcn_buf; | |
2008 | ||
2009 | /* adjust the pointers in the current BSS descriptor */ | |
2010 | if (curr_bss->bcn_wpa_ie) | |
2011 | curr_bss->bcn_wpa_ie = | |
2012 | (struct ieee_types_vendor_specific *) | |
2013 | (curr_bss->beacon_buf + | |
2014 | curr_bss->wpa_offset); | |
2015 | ||
2016 | if (curr_bss->bcn_rsn_ie) | |
2017 | curr_bss->bcn_rsn_ie = (struct ieee_types_generic *) | |
2018 | (curr_bss->beacon_buf + | |
2019 | curr_bss->rsn_offset); | |
2020 | ||
2021 | if (curr_bss->bcn_ht_cap) | |
2022 | curr_bss->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
2023 | (curr_bss->beacon_buf + | |
2024 | curr_bss->ht_cap_offset); | |
2025 | ||
2026 | if (curr_bss->bcn_ht_info) | |
2027 | curr_bss->bcn_ht_info = (struct ieee80211_ht_info *) | |
2028 | (curr_bss->beacon_buf + | |
2029 | curr_bss->ht_info_offset); | |
2030 | ||
2031 | if (curr_bss->bcn_bss_co_2040) | |
2032 | curr_bss->bcn_bss_co_2040 = | |
2033 | (u8 *) (curr_bss->beacon_buf + | |
2034 | curr_bss->bss_co_2040_offset); | |
2035 | ||
2036 | if (curr_bss->bcn_ext_cap) | |
2037 | curr_bss->bcn_ext_cap = (u8 *) (curr_bss->beacon_buf + | |
2038 | curr_bss->ext_cap_offset); | |
5e6e3a92 BZ |
2039 | } |
2040 | ||
2041 | /* | |
2042 | * This function frees the current BSS descriptor beacon buffer. | |
2043 | */ | |
2044 | void | |
2045 | mwifiex_free_curr_bcn(struct mwifiex_private *priv) | |
2046 | { | |
2047 | kfree(priv->curr_bcn_buf); | |
2048 | priv->curr_bcn_buf = NULL; | |
2049 | } |