Commit | Line | Data |
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5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: scan ioctl and command handling | |
3 | * | |
65da33f5 | 4 | * Copyright (C) 2011-2014, Marvell International Ltd. |
5e6e3a92 BZ |
5 | * |
6 | * This software file (the "File") is distributed by Marvell International | |
7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 | |
8 | * (the "License"). You may use, redistribute and/or modify this File in | |
9 | * accordance with the terms and conditions of the License, a copy of which | |
10 | * is available by writing to the Free Software Foundation, Inc., | |
11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the | |
12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. | |
13 | * | |
14 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE | |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE | |
16 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about | |
17 | * this warranty disclaimer. | |
18 | */ | |
19 | ||
20 | #include "decl.h" | |
21 | #include "ioctl.h" | |
22 | #include "util.h" | |
23 | #include "fw.h" | |
24 | #include "main.h" | |
25 | #include "11n.h" | |
26 | #include "cfg80211.h" | |
27 | ||
28 | /* The maximum number of channels the firmware can scan per command */ | |
29 | #define MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN 14 | |
30 | ||
658f37b7 | 31 | #define MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD 4 |
5e6e3a92 BZ |
32 | |
33 | /* Memory needed to store a max sized Channel List TLV for a firmware scan */ | |
34 | #define CHAN_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_header) \ | |
35 | + (MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN \ | |
36 | *sizeof(struct mwifiex_chan_scan_param_set))) | |
37 | ||
38 | /* Memory needed to store supported rate */ | |
39 | #define RATE_TLV_MAX_SIZE (sizeof(struct mwifiex_ie_types_rates_param_set) \ | |
40 | + HOSTCMD_SUPPORTED_RATES) | |
41 | ||
42 | /* Memory needed to store a max number/size WildCard SSID TLV for a firmware | |
43 | scan */ | |
44 | #define WILDCARD_SSID_TLV_MAX_SIZE \ | |
45 | (MWIFIEX_MAX_SSID_LIST_LENGTH * \ | |
46 | (sizeof(struct mwifiex_ie_types_wildcard_ssid_params) \ | |
47 | + IEEE80211_MAX_SSID_LEN)) | |
48 | ||
49 | /* Maximum memory needed for a mwifiex_scan_cmd_config with all TLVs at max */ | |
50 | #define MAX_SCAN_CFG_ALLOC (sizeof(struct mwifiex_scan_cmd_config) \ | |
51 | + sizeof(struct mwifiex_ie_types_num_probes) \ | |
52 | + sizeof(struct mwifiex_ie_types_htcap) \ | |
53 | + CHAN_TLV_MAX_SIZE \ | |
54 | + RATE_TLV_MAX_SIZE \ | |
55 | + WILDCARD_SSID_TLV_MAX_SIZE) | |
56 | ||
57 | ||
58 | union mwifiex_scan_cmd_config_tlv { | |
59 | /* Scan configuration (variable length) */ | |
60 | struct mwifiex_scan_cmd_config config; | |
61 | /* Max allocated block */ | |
62 | u8 config_alloc_buf[MAX_SCAN_CFG_ALLOC]; | |
63 | }; | |
64 | ||
65 | enum cipher_suite { | |
66 | CIPHER_SUITE_TKIP, | |
67 | CIPHER_SUITE_CCMP, | |
68 | CIPHER_SUITE_MAX | |
69 | }; | |
70 | static u8 mwifiex_wpa_oui[CIPHER_SUITE_MAX][4] = { | |
71 | { 0x00, 0x50, 0xf2, 0x02 }, /* TKIP */ | |
72 | { 0x00, 0x50, 0xf2, 0x04 }, /* AES */ | |
73 | }; | |
74 | static u8 mwifiex_rsn_oui[CIPHER_SUITE_MAX][4] = { | |
75 | { 0x00, 0x0f, 0xac, 0x02 }, /* TKIP */ | |
76 | { 0x00, 0x0f, 0xac, 0x04 }, /* AES */ | |
77 | }; | |
78 | ||
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 == | |
04b2312a | 153 | WLAN_EID_VENDOR_SPECIFIC))) { |
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 != |
04b2312a | 202 | WLAN_EID_VENDOR_SPECIFIC)) && |
cff23cec | 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) && | |
04b2312a AS |
237 | ((*(bss_desc->bcn_wpa_ie)). |
238 | vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)) | |
5e6e3a92 BZ |
239 | /* |
240 | * Privacy bit may NOT be set in some APs like | |
241 | * LinkSys WRT54G && bss_desc->privacy | |
242 | */ | |
243 | ) { | |
7c6fa2a8 | 244 | dev_dbg(priv->adapter->dev, "info: %s: WPA:" |
5e6e3a92 | 245 | " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " |
7c6fa2a8 | 246 | "EncMode=%#x privacy=%#x\n", __func__, |
5e6e3a92 BZ |
247 | (bss_desc->bcn_wpa_ie) ? |
248 | (*(bss_desc->bcn_wpa_ie)). | |
249 | vend_hdr.element_id : 0, | |
250 | (bss_desc->bcn_rsn_ie) ? | |
251 | (*(bss_desc->bcn_rsn_ie)). | |
252 | ieee_hdr.element_id : 0, | |
5eb02e44 | 253 | (priv->sec_info.wep_enabled) ? "e" : "d", |
5e6e3a92 BZ |
254 | (priv->sec_info.wpa_enabled) ? "e" : "d", |
255 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
256 | priv->sec_info.encryption_mode, | |
257 | bss_desc->privacy); | |
258 | return true; | |
259 | } | |
260 | return false; | |
261 | } | |
262 | ||
263 | /* | |
264 | * This function checks if wpa2 is enabled in driver and scanned network is | |
265 | * compatible with it. | |
266 | */ | |
267 | static bool | |
cff23cec YAP |
268 | mwifiex_is_bss_wpa2(struct mwifiex_private *priv, |
269 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 270 | { |
cff23cec YAP |
271 | if (!priv->sec_info.wep_enabled && |
272 | !priv->sec_info.wpa_enabled && | |
273 | priv->sec_info.wpa2_enabled && | |
274 | ((bss_desc->bcn_rsn_ie) && | |
275 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id == WLAN_EID_RSN))) { | |
276 | /* | |
277 | * Privacy bit may NOT be set in some APs like | |
278 | * LinkSys WRT54G && bss_desc->privacy | |
279 | */ | |
7c6fa2a8 | 280 | dev_dbg(priv->adapter->dev, "info: %s: WPA2: " |
5e6e3a92 | 281 | " wpa_ie=%#x wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " |
7c6fa2a8 | 282 | "EncMode=%#x privacy=%#x\n", __func__, |
5e6e3a92 BZ |
283 | (bss_desc->bcn_wpa_ie) ? |
284 | (*(bss_desc->bcn_wpa_ie)). | |
285 | vend_hdr.element_id : 0, | |
286 | (bss_desc->bcn_rsn_ie) ? | |
287 | (*(bss_desc->bcn_rsn_ie)). | |
288 | ieee_hdr.element_id : 0, | |
5eb02e44 | 289 | (priv->sec_info.wep_enabled) ? "e" : "d", |
5e6e3a92 BZ |
290 | (priv->sec_info.wpa_enabled) ? "e" : "d", |
291 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
292 | priv->sec_info.encryption_mode, | |
293 | bss_desc->privacy); | |
294 | return true; | |
295 | } | |
296 | return false; | |
297 | } | |
298 | ||
299 | /* | |
300 | * This function checks if adhoc AES is enabled in driver and scanned network is | |
301 | * compatible with it. | |
302 | */ | |
303 | static bool | |
cff23cec YAP |
304 | mwifiex_is_bss_adhoc_aes(struct mwifiex_private *priv, |
305 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 306 | { |
5eb02e44 | 307 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec YAP |
308 | !priv->sec_info.wpa2_enabled && |
309 | ((!bss_desc->bcn_wpa_ie) || | |
04b2312a AS |
310 | ((*(bss_desc->bcn_wpa_ie)). |
311 | vend_hdr.element_id != WLAN_EID_VENDOR_SPECIFIC)) && | |
cff23cec YAP |
312 | ((!bss_desc->bcn_rsn_ie) || |
313 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != WLAN_EID_RSN)) && | |
314 | !priv->sec_info.encryption_mode && bss_desc->privacy) { | |
5e6e3a92 BZ |
315 | return true; |
316 | } | |
317 | return false; | |
318 | } | |
319 | ||
320 | /* | |
321 | * This function checks if dynamic WEP is enabled in driver and scanned network | |
322 | * is compatible with it. | |
323 | */ | |
324 | static bool | |
cff23cec YAP |
325 | mwifiex_is_bss_dynamic_wep(struct mwifiex_private *priv, |
326 | struct mwifiex_bssdescriptor *bss_desc) | |
5e6e3a92 | 327 | { |
5eb02e44 | 328 | if (!priv->sec_info.wep_enabled && !priv->sec_info.wpa_enabled && |
cff23cec YAP |
329 | !priv->sec_info.wpa2_enabled && |
330 | ((!bss_desc->bcn_wpa_ie) || | |
04b2312a AS |
331 | ((*(bss_desc->bcn_wpa_ie)). |
332 | vend_hdr.element_id != WLAN_EID_VENDOR_SPECIFIC)) && | |
cff23cec YAP |
333 | ((!bss_desc->bcn_rsn_ie) || |
334 | ((*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id != WLAN_EID_RSN)) && | |
335 | priv->sec_info.encryption_mode && bss_desc->privacy) { | |
5e6e3a92 | 336 | dev_dbg(priv->adapter->dev, "info: %s: dynamic " |
7c6fa2a8 | 337 | "WEP: wpa_ie=%#x wpa2_ie=%#x " |
5e6e3a92 | 338 | "EncMode=%#x privacy=%#x\n", |
7c6fa2a8 | 339 | __func__, |
5e6e3a92 BZ |
340 | (bss_desc->bcn_wpa_ie) ? |
341 | (*(bss_desc->bcn_wpa_ie)). | |
342 | vend_hdr.element_id : 0, | |
343 | (bss_desc->bcn_rsn_ie) ? | |
344 | (*(bss_desc->bcn_rsn_ie)). | |
345 | ieee_hdr.element_id : 0, | |
346 | priv->sec_info.encryption_mode, | |
347 | bss_desc->privacy); | |
348 | return true; | |
349 | } | |
350 | return false; | |
351 | } | |
352 | ||
353 | /* | |
354 | * This function checks if a scanned network is compatible with the driver | |
355 | * settings. | |
356 | * | |
357 | * WEP WPA WPA2 ad-hoc encrypt Network | |
358 | * enabled enabled enabled AES mode Privacy WPA WPA2 Compatible | |
359 | * 0 0 0 0 NONE 0 0 0 yes No security | |
360 | * 0 1 0 0 x 1x 1 x yes WPA (disable | |
361 | * HT if no AES) | |
362 | * 0 0 1 0 x 1x x 1 yes WPA2 (disable | |
363 | * HT if no AES) | |
364 | * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES | |
365 | * 1 0 0 0 NONE 1 0 0 yes Static WEP | |
366 | * (disable HT) | |
367 | * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP | |
368 | * | |
369 | * Compatibility is not matched while roaming, except for mode. | |
370 | */ | |
371 | static s32 | |
7c6fa2a8 AK |
372 | mwifiex_is_network_compatible(struct mwifiex_private *priv, |
373 | struct mwifiex_bssdescriptor *bss_desc, u32 mode) | |
5e6e3a92 BZ |
374 | { |
375 | struct mwifiex_adapter *adapter = priv->adapter; | |
5e6e3a92 | 376 | |
5e6e3a92 BZ |
377 | bss_desc->disable_11n = false; |
378 | ||
379 | /* Don't check for compatibility if roaming */ | |
cff23cec YAP |
380 | if (priv->media_connected && |
381 | (priv->bss_mode == NL80211_IFTYPE_STATION) && | |
382 | (bss_desc->bss_mode == NL80211_IFTYPE_STATION)) | |
7c6fa2a8 | 383 | return 0; |
5e6e3a92 BZ |
384 | |
385 | if (priv->wps.session_enable) { | |
386 | dev_dbg(adapter->dev, | |
387 | "info: return success directly in WPS period\n"); | |
7c6fa2a8 | 388 | return 0; |
5e6e3a92 BZ |
389 | } |
390 | ||
2a7305c8 AK |
391 | if (bss_desc->chan_sw_ie_present) { |
392 | dev_err(adapter->dev, | |
393 | "Don't connect to AP with WLAN_EID_CHANNEL_SWITCH\n"); | |
394 | return -1; | |
395 | } | |
396 | ||
cff23cec | 397 | if (mwifiex_is_bss_wapi(priv, bss_desc)) { |
5e6e3a92 | 398 | dev_dbg(adapter->dev, "info: return success for WAPI AP\n"); |
7c6fa2a8 | 399 | return 0; |
5e6e3a92 BZ |
400 | } |
401 | ||
402 | if (bss_desc->bss_mode == mode) { | |
cff23cec | 403 | if (mwifiex_is_bss_no_sec(priv, bss_desc)) { |
5e6e3a92 | 404 | /* No security */ |
7c6fa2a8 | 405 | return 0; |
cff23cec | 406 | } else if (mwifiex_is_bss_static_wep(priv, bss_desc)) { |
5e6e3a92 BZ |
407 | /* Static WEP enabled */ |
408 | dev_dbg(adapter->dev, "info: Disable 11n in WEP mode.\n"); | |
409 | bss_desc->disable_11n = true; | |
7c6fa2a8 | 410 | return 0; |
cff23cec | 411 | } else if (mwifiex_is_bss_wpa(priv, bss_desc)) { |
5e6e3a92 | 412 | /* WPA enabled */ |
cff23cec YAP |
413 | if (((priv->adapter->config_bands & BAND_GN || |
414 | priv->adapter->config_bands & BAND_AN) && | |
415 | bss_desc->bcn_ht_cap) && | |
416 | !mwifiex_is_wpa_oui_present(bss_desc, | |
417 | CIPHER_SUITE_CCMP)) { | |
418 | ||
419 | if (mwifiex_is_wpa_oui_present | |
420 | (bss_desc, CIPHER_SUITE_TKIP)) { | |
5e6e3a92 BZ |
421 | dev_dbg(adapter->dev, |
422 | "info: Disable 11n if AES " | |
423 | "is not supported by AP\n"); | |
424 | bss_desc->disable_11n = true; | |
425 | } else { | |
426 | return -1; | |
427 | } | |
428 | } | |
7c6fa2a8 | 429 | return 0; |
cff23cec | 430 | } else if (mwifiex_is_bss_wpa2(priv, bss_desc)) { |
5e6e3a92 | 431 | /* WPA2 enabled */ |
cff23cec YAP |
432 | if (((priv->adapter->config_bands & BAND_GN || |
433 | priv->adapter->config_bands & BAND_AN) && | |
434 | bss_desc->bcn_ht_cap) && | |
435 | !mwifiex_is_rsn_oui_present(bss_desc, | |
436 | CIPHER_SUITE_CCMP)) { | |
437 | ||
438 | if (mwifiex_is_rsn_oui_present | |
439 | (bss_desc, CIPHER_SUITE_TKIP)) { | |
5e6e3a92 BZ |
440 | dev_dbg(adapter->dev, |
441 | "info: Disable 11n if AES " | |
442 | "is not supported by AP\n"); | |
443 | bss_desc->disable_11n = true; | |
444 | } else { | |
445 | return -1; | |
446 | } | |
447 | } | |
7c6fa2a8 | 448 | return 0; |
cff23cec | 449 | } else if (mwifiex_is_bss_adhoc_aes(priv, bss_desc)) { |
5e6e3a92 | 450 | /* Ad-hoc AES enabled */ |
7c6fa2a8 | 451 | return 0; |
cff23cec | 452 | } else if (mwifiex_is_bss_dynamic_wep(priv, bss_desc)) { |
5e6e3a92 | 453 | /* Dynamic WEP enabled */ |
7c6fa2a8 | 454 | return 0; |
5e6e3a92 BZ |
455 | } |
456 | ||
457 | /* Security doesn't match */ | |
cff23cec YAP |
458 | dev_dbg(adapter->dev, |
459 | "info: %s: failed: wpa_ie=%#x wpa2_ie=%#x WEP=%s " | |
460 | "WPA=%s WPA2=%s EncMode=%#x privacy=%#x\n", __func__, | |
461 | (bss_desc->bcn_wpa_ie) ? | |
462 | (*(bss_desc->bcn_wpa_ie)).vend_hdr.element_id : 0, | |
463 | (bss_desc->bcn_rsn_ie) ? | |
464 | (*(bss_desc->bcn_rsn_ie)).ieee_hdr.element_id : 0, | |
465 | (priv->sec_info.wep_enabled) ? "e" : "d", | |
466 | (priv->sec_info.wpa_enabled) ? "e" : "d", | |
467 | (priv->sec_info.wpa2_enabled) ? "e" : "d", | |
468 | priv->sec_info.encryption_mode, bss_desc->privacy); | |
5e6e3a92 BZ |
469 | return -1; |
470 | } | |
471 | ||
472 | /* Mode doesn't match */ | |
473 | return -1; | |
474 | } | |
475 | ||
5e6e3a92 BZ |
476 | /* |
477 | * This function creates a channel list for the driver to scan, based | |
478 | * on region/band information. | |
479 | * | |
480 | * This routine is used for any scan that is not provided with a | |
481 | * specific channel list to scan. | |
482 | */ | |
658f37b7 | 483 | static int |
5e6e3a92 | 484 | mwifiex_scan_create_channel_list(struct mwifiex_private *priv, |
cff23cec YAP |
485 | const struct mwifiex_user_scan_cfg |
486 | *user_scan_in, | |
487 | struct mwifiex_chan_scan_param_set | |
488 | *scan_chan_list, | |
489 | u8 filtered_scan) | |
5e6e3a92 BZ |
490 | { |
491 | enum ieee80211_band band; | |
492 | struct ieee80211_supported_band *sband; | |
493 | struct ieee80211_channel *ch; | |
494 | struct mwifiex_adapter *adapter = priv->adapter; | |
495 | int chan_idx = 0, i; | |
5e6e3a92 BZ |
496 | |
497 | for (band = 0; (band < IEEE80211_NUM_BANDS) ; band++) { | |
498 | ||
499 | if (!priv->wdev->wiphy->bands[band]) | |
500 | continue; | |
501 | ||
502 | sband = priv->wdev->wiphy->bands[band]; | |
503 | ||
d06b7b9e | 504 | for (i = 0; (i < sband->n_channels) ; i++) { |
5e6e3a92 BZ |
505 | ch = &sband->channels[i]; |
506 | if (ch->flags & IEEE80211_CHAN_DISABLED) | |
507 | continue; | |
508 | scan_chan_list[chan_idx].radio_type = band; | |
186630c2 | 509 | |
5e6e3a92 | 510 | if (user_scan_in && |
cff23cec | 511 | user_scan_in->chan_list[0].scan_time) |
5e6e3a92 BZ |
512 | scan_chan_list[chan_idx].max_scan_time = |
513 | cpu_to_le16((u16) user_scan_in-> | |
514 | chan_list[0].scan_time); | |
8fe02e16 | 515 | else if (ch->flags & IEEE80211_CHAN_NO_IR) |
5e6e3a92 BZ |
516 | scan_chan_list[chan_idx].max_scan_time = |
517 | cpu_to_le16(adapter->passive_scan_time); | |
518 | else | |
519 | scan_chan_list[chan_idx].max_scan_time = | |
520 | cpu_to_le16(adapter->active_scan_time); | |
186630c2 | 521 | |
8fe02e16 | 522 | if (ch->flags & IEEE80211_CHAN_NO_IR) |
5e6e3a92 BZ |
523 | scan_chan_list[chan_idx].chan_scan_mode_bitmap |
524 | |= MWIFIEX_PASSIVE_SCAN; | |
525 | else | |
526 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
527 | &= ~MWIFIEX_PASSIVE_SCAN; | |
528 | scan_chan_list[chan_idx].chan_number = | |
529 | (u32) ch->hw_value; | |
530 | if (filtered_scan) { | |
531 | scan_chan_list[chan_idx].max_scan_time = | |
532 | cpu_to_le16(adapter->specific_scan_time); | |
533 | scan_chan_list[chan_idx].chan_scan_mode_bitmap | |
534 | |= MWIFIEX_DISABLE_CHAN_FILT; | |
535 | } | |
d06b7b9e | 536 | chan_idx++; |
5e6e3a92 BZ |
537 | } |
538 | ||
539 | } | |
658f37b7 | 540 | return chan_idx; |
5e6e3a92 BZ |
541 | } |
542 | ||
78dfca62 AP |
543 | /* This function appends rate TLV to scan config command. */ |
544 | static int | |
545 | mwifiex_append_rate_tlv(struct mwifiex_private *priv, | |
546 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
547 | u8 radio) | |
548 | { | |
549 | struct mwifiex_ie_types_rates_param_set *rates_tlv; | |
550 | u8 rates[MWIFIEX_SUPPORTED_RATES], *tlv_pos; | |
551 | u32 rates_size; | |
552 | ||
553 | memset(rates, 0, sizeof(rates)); | |
554 | ||
555 | tlv_pos = (u8 *)scan_cfg_out->tlv_buf + scan_cfg_out->tlv_buf_len; | |
556 | ||
557 | if (priv->scan_request) | |
558 | rates_size = mwifiex_get_rates_from_cfg80211(priv, rates, | |
559 | radio); | |
560 | else | |
561 | rates_size = mwifiex_get_supported_rates(priv, rates); | |
562 | ||
563 | dev_dbg(priv->adapter->dev, "info: SCAN_CMD: Rates size = %d\n", | |
564 | rates_size); | |
565 | rates_tlv = (struct mwifiex_ie_types_rates_param_set *)tlv_pos; | |
566 | rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES); | |
567 | rates_tlv->header.len = cpu_to_le16((u16) rates_size); | |
568 | memcpy(rates_tlv->rates, rates, rates_size); | |
569 | scan_cfg_out->tlv_buf_len += sizeof(rates_tlv->header) + rates_size; | |
570 | ||
571 | return rates_size; | |
572 | } | |
573 | ||
5e6e3a92 BZ |
574 | /* |
575 | * This function constructs and sends multiple scan config commands to | |
576 | * the firmware. | |
577 | * | |
578 | * Previous routines in the code flow have created a scan command configuration | |
579 | * with any requested TLVs. This function splits the channel TLV into maximum | |
580 | * channels supported per scan lists and sends the portion of the channel TLV, | |
581 | * along with the other TLVs, to the firmware. | |
582 | */ | |
583 | static int | |
600f5d90 | 584 | mwifiex_scan_channel_list(struct mwifiex_private *priv, |
5e6e3a92 BZ |
585 | u32 max_chan_per_scan, u8 filtered_scan, |
586 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
587 | struct mwifiex_ie_types_chan_list_param_set | |
588 | *chan_tlv_out, | |
589 | struct mwifiex_chan_scan_param_set *scan_chan_list) | |
590 | { | |
1845bd3a | 591 | struct mwifiex_adapter *adapter = priv->adapter; |
5e6e3a92 BZ |
592 | int ret = 0; |
593 | struct mwifiex_chan_scan_param_set *tmp_chan_list; | |
594 | struct mwifiex_chan_scan_param_set *start_chan; | |
1845bd3a AK |
595 | struct cmd_ctrl_node *cmd_node, *tmp_node; |
596 | unsigned long flags; | |
21f58d20 | 597 | u32 tlv_idx, rates_size, cmd_no; |
5e6e3a92 BZ |
598 | u32 total_scan_time; |
599 | u32 done_early; | |
78dfca62 | 600 | u8 radio_type; |
5e6e3a92 BZ |
601 | |
602 | if (!scan_cfg_out || !chan_tlv_out || !scan_chan_list) { | |
603 | dev_dbg(priv->adapter->dev, | |
604 | "info: Scan: Null detect: %p, %p, %p\n", | |
605 | scan_cfg_out, chan_tlv_out, scan_chan_list); | |
606 | return -1; | |
607 | } | |
608 | ||
b887664d AK |
609 | /* Check csa channel expiry before preparing scan list */ |
610 | mwifiex_11h_get_csa_closed_channel(priv); | |
611 | ||
5e6e3a92 BZ |
612 | chan_tlv_out->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); |
613 | ||
614 | /* Set the temp channel struct pointer to the start of the desired | |
615 | list */ | |
616 | tmp_chan_list = scan_chan_list; | |
617 | ||
618 | /* Loop through the desired channel list, sending a new firmware scan | |
619 | commands for each max_chan_per_scan channels (or for 1,6,11 | |
620 | individually if configured accordingly) */ | |
621 | while (tmp_chan_list->chan_number) { | |
622 | ||
623 | tlv_idx = 0; | |
624 | total_scan_time = 0; | |
78dfca62 | 625 | radio_type = 0; |
5e6e3a92 BZ |
626 | chan_tlv_out->header.len = 0; |
627 | start_chan = tmp_chan_list; | |
628 | done_early = false; | |
629 | ||
630 | /* | |
631 | * Construct the Channel TLV for the scan command. Continue to | |
632 | * insert channel TLVs until: | |
633 | * - the tlv_idx hits the maximum configured per scan command | |
634 | * - the next channel to insert is 0 (end of desired channel | |
635 | * list) | |
636 | * - done_early is set (controlling individual scanning of | |
637 | * 1,6,11) | |
638 | */ | |
cff23cec YAP |
639 | while (tlv_idx < max_chan_per_scan && |
640 | tmp_chan_list->chan_number && !done_early) { | |
5e6e3a92 | 641 | |
b887664d AK |
642 | if (tmp_chan_list->chan_number == priv->csa_chan) { |
643 | tmp_chan_list++; | |
644 | continue; | |
645 | } | |
646 | ||
78dfca62 | 647 | radio_type = tmp_chan_list->radio_type; |
5e6e3a92 BZ |
648 | dev_dbg(priv->adapter->dev, |
649 | "info: Scan: Chan(%3d), Radio(%d)," | |
650 | " Mode(%d, %d), Dur(%d)\n", | |
cff23cec YAP |
651 | tmp_chan_list->chan_number, |
652 | tmp_chan_list->radio_type, | |
653 | tmp_chan_list->chan_scan_mode_bitmap | |
654 | & MWIFIEX_PASSIVE_SCAN, | |
655 | (tmp_chan_list->chan_scan_mode_bitmap | |
656 | & MWIFIEX_DISABLE_CHAN_FILT) >> 1, | |
657 | le16_to_cpu(tmp_chan_list->max_scan_time)); | |
5e6e3a92 BZ |
658 | |
659 | /* Copy the current channel TLV to the command being | |
660 | prepared */ | |
661 | memcpy(chan_tlv_out->chan_scan_param + tlv_idx, | |
662 | tmp_chan_list, | |
663 | sizeof(chan_tlv_out->chan_scan_param)); | |
664 | ||
665 | /* Increment the TLV header length by the size | |
666 | appended */ | |
5570a914 WY |
667 | le16_add_cpu(&chan_tlv_out->header.len, |
668 | sizeof(chan_tlv_out->chan_scan_param)); | |
5e6e3a92 BZ |
669 | |
670 | /* | |
671 | * The tlv buffer length is set to the number of bytes | |
672 | * of the between the channel tlv pointer and the start | |
673 | * of the tlv buffer. This compensates for any TLVs | |
674 | * that were appended before the channel list. | |
675 | */ | |
676 | scan_cfg_out->tlv_buf_len = (u32) ((u8 *) chan_tlv_out - | |
677 | scan_cfg_out->tlv_buf); | |
678 | ||
679 | /* Add the size of the channel tlv header and the data | |
680 | length */ | |
681 | scan_cfg_out->tlv_buf_len += | |
682 | (sizeof(chan_tlv_out->header) | |
683 | + le16_to_cpu(chan_tlv_out->header.len)); | |
684 | ||
685 | /* Increment the index to the channel tlv we are | |
686 | constructing */ | |
687 | tlv_idx++; | |
688 | ||
689 | /* Count the total scan time per command */ | |
690 | total_scan_time += | |
691 | le16_to_cpu(tmp_chan_list->max_scan_time); | |
692 | ||
693 | done_early = false; | |
694 | ||
695 | /* Stop the loop if the *current* channel is in the | |
696 | 1,6,11 set and we are not filtering on a BSSID | |
697 | or SSID. */ | |
cff23cec YAP |
698 | if (!filtered_scan && |
699 | (tmp_chan_list->chan_number == 1 || | |
700 | tmp_chan_list->chan_number == 6 || | |
701 | tmp_chan_list->chan_number == 11)) | |
5e6e3a92 BZ |
702 | done_early = true; |
703 | ||
704 | /* Increment the tmp pointer to the next channel to | |
705 | be scanned */ | |
706 | tmp_chan_list++; | |
707 | ||
708 | /* Stop the loop if the *next* channel is in the 1,6,11 | |
709 | set. This will cause it to be the only channel | |
710 | scanned on the next interation */ | |
cff23cec YAP |
711 | if (!filtered_scan && |
712 | (tmp_chan_list->chan_number == 1 || | |
713 | tmp_chan_list->chan_number == 6 || | |
714 | tmp_chan_list->chan_number == 11)) | |
5e6e3a92 BZ |
715 | done_early = true; |
716 | } | |
717 | ||
718 | /* The total scan time should be less than scan command timeout | |
719 | value */ | |
720 | if (total_scan_time > MWIFIEX_MAX_TOTAL_SCAN_TIME) { | |
721 | dev_err(priv->adapter->dev, "total scan time %dms" | |
722 | " is over limit (%dms), scan skipped\n", | |
723 | total_scan_time, MWIFIEX_MAX_TOTAL_SCAN_TIME); | |
724 | ret = -1; | |
725 | break; | |
726 | } | |
727 | ||
78dfca62 AP |
728 | rates_size = mwifiex_append_rate_tlv(priv, scan_cfg_out, |
729 | radio_type); | |
730 | ||
5e6e3a92 BZ |
731 | priv->adapter->scan_channels = start_chan; |
732 | ||
733 | /* Send the scan command to the firmware with the specified | |
734 | cfg */ | |
21f58d20 AK |
735 | if (priv->adapter->ext_scan) |
736 | cmd_no = HostCmd_CMD_802_11_SCAN_EXT; | |
737 | else | |
738 | cmd_no = HostCmd_CMD_802_11_SCAN; | |
739 | ||
fa0ecbb9 BZ |
740 | ret = mwifiex_send_cmd(priv, cmd_no, HostCmd_ACT_GEN_SET, |
741 | 0, scan_cfg_out, false); | |
78dfca62 AP |
742 | |
743 | /* rate IE is updated per scan command but same starting | |
744 | * pointer is used each time so that rate IE from earlier | |
745 | * scan_cfg_out->buf is overwritten with new one. | |
746 | */ | |
747 | scan_cfg_out->tlv_buf_len -= | |
748 | sizeof(struct mwifiex_ie_types_header) + rates_size; | |
749 | ||
1845bd3a AK |
750 | if (ret) { |
751 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
752 | list_for_each_entry_safe(cmd_node, tmp_node, | |
753 | &adapter->scan_pending_q, | |
754 | list) { | |
755 | list_del(&cmd_node->list); | |
756 | cmd_node->wait_q_enabled = false; | |
757 | mwifiex_insert_cmd_to_free_q(adapter, cmd_node); | |
758 | } | |
759 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
760 | flags); | |
5e6e3a92 | 761 | break; |
1845bd3a | 762 | } |
5e6e3a92 BZ |
763 | } |
764 | ||
765 | if (ret) | |
766 | return -1; | |
767 | ||
768 | return 0; | |
769 | } | |
770 | ||
771 | /* | |
772 | * This function constructs a scan command configuration structure to use | |
773 | * in scan commands. | |
774 | * | |
775 | * Application layer or other functions can invoke network scanning | |
776 | * with a scan configuration supplied in a user scan configuration structure. | |
777 | * This structure is used as the basis of one or many scan command configuration | |
778 | * commands that are sent to the command processing module and eventually to the | |
779 | * firmware. | |
780 | * | |
781 | * This function creates a scan command configuration structure based on the | |
782 | * following user supplied parameters (if present): | |
783 | * - SSID filter | |
784 | * - BSSID filter | |
785 | * - Number of Probes to be sent | |
786 | * - Channel list | |
787 | * | |
788 | * If the SSID or BSSID filter is not present, the filter is disabled/cleared. | |
789 | * If the number of probes is not set, adapter default setting is used. | |
790 | */ | |
791 | static void | |
cff23cec YAP |
792 | mwifiex_config_scan(struct mwifiex_private *priv, |
793 | const struct mwifiex_user_scan_cfg *user_scan_in, | |
794 | struct mwifiex_scan_cmd_config *scan_cfg_out, | |
795 | struct mwifiex_ie_types_chan_list_param_set **chan_list_out, | |
796 | struct mwifiex_chan_scan_param_set *scan_chan_list, | |
797 | u8 *max_chan_per_scan, u8 *filtered_scan, | |
798 | u8 *scan_current_only) | |
5e6e3a92 BZ |
799 | { |
800 | struct mwifiex_adapter *adapter = priv->adapter; | |
801 | struct mwifiex_ie_types_num_probes *num_probes_tlv; | |
cb91be87 | 802 | struct mwifiex_ie_types_scan_chan_gap *chan_gap_tlv; |
5e6e3a92 | 803 | struct mwifiex_ie_types_wildcard_ssid_params *wildcard_ssid_tlv; |
21f58d20 | 804 | struct mwifiex_ie_types_bssid_list *bssid_tlv; |
5e6e3a92 BZ |
805 | u8 *tlv_pos; |
806 | u32 num_probes; | |
807 | u32 ssid_len; | |
808 | u32 chan_idx; | |
658f37b7 | 809 | u32 chan_num; |
5e6e3a92 BZ |
810 | u32 scan_type; |
811 | u16 scan_dur; | |
812 | u8 channel; | |
813 | u8 radio_type; | |
be0b281e | 814 | int i; |
5e6e3a92 | 815 | u8 ssid_filter; |
5e6e3a92 BZ |
816 | struct mwifiex_ie_types_htcap *ht_cap; |
817 | ||
818 | /* The tlv_buf_len is calculated for each scan command. The TLVs added | |
819 | in this routine will be preserved since the routine that sends the | |
820 | command will append channelTLVs at *chan_list_out. The difference | |
821 | between the *chan_list_out and the tlv_buf start will be used to | |
822 | calculate the size of anything we add in this routine. */ | |
823 | scan_cfg_out->tlv_buf_len = 0; | |
824 | ||
825 | /* Running tlv pointer. Assigned to chan_list_out at end of function | |
826 | so later routines know where channels can be added to the command | |
827 | buf */ | |
828 | tlv_pos = scan_cfg_out->tlv_buf; | |
829 | ||
830 | /* Initialize the scan as un-filtered; the flag is later set to TRUE | |
831 | below if a SSID or BSSID filter is sent in the command */ | |
832 | *filtered_scan = false; | |
833 | ||
834 | /* Initialize the scan as not being only on the current channel. If | |
835 | the channel list is customized, only contains one channel, and is | |
836 | the active channel, this is set true and data flow is not halted. */ | |
837 | *scan_current_only = false; | |
838 | ||
839 | if (user_scan_in) { | |
840 | ||
841 | /* Default the ssid_filter flag to TRUE, set false under | |
842 | certain wildcard conditions and qualified by the existence | |
843 | of an SSID list before marking the scan as filtered */ | |
844 | ssid_filter = true; | |
845 | ||
846 | /* Set the BSS type scan filter, use Adapter setting if | |
847 | unset */ | |
848 | scan_cfg_out->bss_mode = | |
849 | (user_scan_in->bss_mode ? (u8) user_scan_in-> | |
850 | bss_mode : (u8) adapter->scan_mode); | |
851 | ||
852 | /* Set the number of probes to send, use Adapter setting | |
853 | if unset */ | |
854 | num_probes = | |
855 | (user_scan_in->num_probes ? user_scan_in-> | |
856 | num_probes : adapter->scan_probes); | |
857 | ||
858 | /* | |
859 | * Set the BSSID filter to the incoming configuration, | |
860 | * if non-zero. If not set, it will remain disabled | |
861 | * (all zeros). | |
862 | */ | |
863 | memcpy(scan_cfg_out->specific_bssid, | |
864 | user_scan_in->specific_bssid, | |
865 | sizeof(scan_cfg_out->specific_bssid)); | |
866 | ||
21f58d20 AK |
867 | if (adapter->ext_scan && |
868 | !is_zero_ether_addr(scan_cfg_out->specific_bssid)) { | |
869 | bssid_tlv = | |
870 | (struct mwifiex_ie_types_bssid_list *)tlv_pos; | |
871 | bssid_tlv->header.type = cpu_to_le16(TLV_TYPE_BSSID); | |
872 | bssid_tlv->header.len = cpu_to_le16(ETH_ALEN); | |
873 | memcpy(bssid_tlv->bssid, user_scan_in->specific_bssid, | |
874 | ETH_ALEN); | |
875 | tlv_pos += sizeof(struct mwifiex_ie_types_bssid_list); | |
876 | } | |
877 | ||
be0b281e AK |
878 | for (i = 0; i < user_scan_in->num_ssids; i++) { |
879 | ssid_len = user_scan_in->ssid_list[i].ssid_len; | |
5e6e3a92 BZ |
880 | |
881 | wildcard_ssid_tlv = | |
882 | (struct mwifiex_ie_types_wildcard_ssid_params *) | |
883 | tlv_pos; | |
884 | wildcard_ssid_tlv->header.type = | |
885 | cpu_to_le16(TLV_TYPE_WILDCARDSSID); | |
886 | wildcard_ssid_tlv->header.len = cpu_to_le16( | |
887 | (u16) (ssid_len + sizeof(wildcard_ssid_tlv-> | |
888 | max_ssid_length))); | |
fada1058 | 889 | |
be0b281e AK |
890 | /* |
891 | * max_ssid_length = 0 tells firmware to perform | |
892 | * specific scan for the SSID filled, whereas | |
893 | * max_ssid_length = IEEE80211_MAX_SSID_LEN is for | |
894 | * wildcard scan. | |
895 | */ | |
896 | if (ssid_len) | |
897 | wildcard_ssid_tlv->max_ssid_length = 0; | |
898 | else | |
899 | wildcard_ssid_tlv->max_ssid_length = | |
900 | IEEE80211_MAX_SSID_LEN; | |
5e6e3a92 BZ |
901 | |
902 | memcpy(wildcard_ssid_tlv->ssid, | |
be0b281e | 903 | user_scan_in->ssid_list[i].ssid, ssid_len); |
5e6e3a92 BZ |
904 | |
905 | tlv_pos += (sizeof(wildcard_ssid_tlv->header) | |
906 | + le16_to_cpu(wildcard_ssid_tlv->header.len)); | |
907 | ||
be0b281e AK |
908 | dev_dbg(adapter->dev, "info: scan: ssid[%d]: %s, %d\n", |
909 | i, wildcard_ssid_tlv->ssid, | |
5e6e3a92 BZ |
910 | wildcard_ssid_tlv->max_ssid_length); |
911 | ||
912 | /* Empty wildcard ssid with a maxlen will match many or | |
913 | potentially all SSIDs (maxlen == 32), therefore do | |
914 | not treat the scan as | |
915 | filtered. */ | |
916 | if (!ssid_len && wildcard_ssid_tlv->max_ssid_length) | |
917 | ssid_filter = false; | |
5e6e3a92 BZ |
918 | } |
919 | ||
920 | /* | |
921 | * The default number of channels sent in the command is low to | |
922 | * ensure the response buffer from the firmware does not | |
923 | * truncate scan results. That is not an issue with an SSID | |
924 | * or BSSID filter applied to the scan results in the firmware. | |
925 | */ | |
cff23cec | 926 | if ((i && ssid_filter) || |
84f6a95a | 927 | !is_zero_ether_addr(scan_cfg_out->specific_bssid)) |
5e6e3a92 | 928 | *filtered_scan = true; |
8eda10ea AP |
929 | |
930 | if (user_scan_in->scan_chan_gap) { | |
931 | dev_dbg(adapter->dev, "info: scan: channel gap = %d\n", | |
932 | user_scan_in->scan_chan_gap); | |
933 | *max_chan_per_scan = | |
934 | MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN; | |
935 | ||
936 | chan_gap_tlv = (void *)tlv_pos; | |
937 | chan_gap_tlv->header.type = | |
938 | cpu_to_le16(TLV_TYPE_SCAN_CHANNEL_GAP); | |
939 | chan_gap_tlv->header.len = | |
940 | cpu_to_le16(sizeof(chan_gap_tlv->chan_gap)); | |
941 | chan_gap_tlv->chan_gap = | |
942 | cpu_to_le16((user_scan_in->scan_chan_gap)); | |
943 | tlv_pos += | |
944 | sizeof(struct mwifiex_ie_types_scan_chan_gap); | |
945 | } | |
5e6e3a92 BZ |
946 | } else { |
947 | scan_cfg_out->bss_mode = (u8) adapter->scan_mode; | |
948 | num_probes = adapter->scan_probes; | |
949 | } | |
950 | ||
951 | /* | |
952 | * If a specific BSSID or SSID is used, the number of channels in the | |
953 | * scan command will be increased to the absolute maximum. | |
954 | */ | |
955 | if (*filtered_scan) | |
956 | *max_chan_per_scan = MWIFIEX_MAX_CHANNELS_PER_SPECIFIC_SCAN; | |
957 | else | |
658f37b7 | 958 | *max_chan_per_scan = MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD; |
5e6e3a92 BZ |
959 | |
960 | /* If the input config or adapter has the number of Probes set, | |
961 | add tlv */ | |
962 | if (num_probes) { | |
963 | ||
964 | dev_dbg(adapter->dev, "info: scan: num_probes = %d\n", | |
cff23cec | 965 | num_probes); |
5e6e3a92 BZ |
966 | |
967 | num_probes_tlv = (struct mwifiex_ie_types_num_probes *) tlv_pos; | |
968 | num_probes_tlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); | |
969 | num_probes_tlv->header.len = | |
970 | cpu_to_le16(sizeof(num_probes_tlv->num_probes)); | |
971 | num_probes_tlv->num_probes = cpu_to_le16((u16) num_probes); | |
972 | ||
973 | tlv_pos += sizeof(num_probes_tlv->header) + | |
974 | le16_to_cpu(num_probes_tlv->header.len); | |
975 | ||
976 | } | |
977 | ||
cff23cec YAP |
978 | if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) && |
979 | (priv->adapter->config_bands & BAND_GN || | |
980 | priv->adapter->config_bands & BAND_AN)) { | |
5e6e3a92 BZ |
981 | ht_cap = (struct mwifiex_ie_types_htcap *) tlv_pos; |
982 | memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap)); | |
983 | ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY); | |
984 | ht_cap->header.len = | |
985 | cpu_to_le16(sizeof(struct ieee80211_ht_cap)); | |
a46b7b5c AK |
986 | radio_type = |
987 | mwifiex_band_to_radio_type(priv->adapter->config_bands); | |
341b8800 | 988 | mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap); |
5e6e3a92 BZ |
989 | tlv_pos += sizeof(struct mwifiex_ie_types_htcap); |
990 | } | |
991 | ||
992 | /* Append vendor specific IE TLV */ | |
993 | mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_SCAN, &tlv_pos); | |
994 | ||
995 | /* | |
996 | * Set the output for the channel TLV to the address in the tlv buffer | |
997 | * past any TLVs that were added in this function (SSID, num_probes). | |
998 | * Channel TLVs will be added past this for each scan command, | |
999 | * preserving the TLVs that were previously added. | |
1000 | */ | |
1001 | *chan_list_out = | |
1002 | (struct mwifiex_ie_types_chan_list_param_set *) tlv_pos; | |
1003 | ||
1004 | if (user_scan_in && user_scan_in->chan_list[0].chan_number) { | |
1005 | ||
1006 | dev_dbg(adapter->dev, "info: Scan: Using supplied channel list\n"); | |
1007 | ||
1008 | for (chan_idx = 0; | |
cff23cec YAP |
1009 | chan_idx < MWIFIEX_USER_SCAN_CHAN_MAX && |
1010 | user_scan_in->chan_list[chan_idx].chan_number; | |
5e6e3a92 BZ |
1011 | chan_idx++) { |
1012 | ||
1013 | channel = user_scan_in->chan_list[chan_idx].chan_number; | |
1014 | (scan_chan_list + chan_idx)->chan_number = channel; | |
1015 | ||
1016 | radio_type = | |
1017 | user_scan_in->chan_list[chan_idx].radio_type; | |
1018 | (scan_chan_list + chan_idx)->radio_type = radio_type; | |
1019 | ||
1020 | scan_type = user_scan_in->chan_list[chan_idx].scan_type; | |
1021 | ||
1022 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
1023 | (scan_chan_list + | |
1024 | chan_idx)->chan_scan_mode_bitmap | |
1025 | |= MWIFIEX_PASSIVE_SCAN; | |
1026 | else | |
1027 | (scan_chan_list + | |
1028 | chan_idx)->chan_scan_mode_bitmap | |
1029 | &= ~MWIFIEX_PASSIVE_SCAN; | |
1030 | ||
f3e1af3e AK |
1031 | if (*filtered_scan) |
1032 | (scan_chan_list + | |
1033 | chan_idx)->chan_scan_mode_bitmap | |
1034 | |= MWIFIEX_DISABLE_CHAN_FILT; | |
1035 | ||
5e6e3a92 BZ |
1036 | if (user_scan_in->chan_list[chan_idx].scan_time) { |
1037 | scan_dur = (u16) user_scan_in-> | |
1038 | chan_list[chan_idx].scan_time; | |
1039 | } else { | |
1040 | if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE) | |
1041 | scan_dur = adapter->passive_scan_time; | |
1042 | else if (*filtered_scan) | |
1043 | scan_dur = adapter->specific_scan_time; | |
1044 | else | |
1045 | scan_dur = adapter->active_scan_time; | |
1046 | } | |
1047 | ||
1048 | (scan_chan_list + chan_idx)->min_scan_time = | |
1049 | cpu_to_le16(scan_dur); | |
1050 | (scan_chan_list + chan_idx)->max_scan_time = | |
1051 | cpu_to_le16(scan_dur); | |
1052 | } | |
1053 | ||
1054 | /* Check if we are only scanning the current channel */ | |
cff23cec YAP |
1055 | if ((chan_idx == 1) && |
1056 | (user_scan_in->chan_list[0].chan_number == | |
1057 | priv->curr_bss_params.bss_descriptor.channel)) { | |
5e6e3a92 BZ |
1058 | *scan_current_only = true; |
1059 | dev_dbg(adapter->dev, | |
1060 | "info: Scan: Scanning current channel only\n"); | |
1061 | } | |
658f37b7 | 1062 | chan_num = chan_idx; |
5e6e3a92 BZ |
1063 | } else { |
1064 | dev_dbg(adapter->dev, | |
cff23cec | 1065 | "info: Scan: Creating full region channel list\n"); |
658f37b7 AK |
1066 | chan_num = mwifiex_scan_create_channel_list(priv, user_scan_in, |
1067 | scan_chan_list, | |
1068 | *filtered_scan); | |
1069 | } | |
1070 | ||
5e6e3a92 BZ |
1071 | } |
1072 | ||
1073 | /* | |
1074 | * This function inspects the scan response buffer for pointers to | |
1075 | * expected TLVs. | |
1076 | * | |
1077 | * TLVs can be included at the end of the scan response BSS information. | |
1078 | * | |
1079 | * Data in the buffer is parsed pointers to TLVs that can potentially | |
1080 | * be passed back in the response. | |
1081 | */ | |
1082 | static void | |
1083 | mwifiex_ret_802_11_scan_get_tlv_ptrs(struct mwifiex_adapter *adapter, | |
1084 | struct mwifiex_ie_types_data *tlv, | |
1085 | u32 tlv_buf_size, u32 req_tlv_type, | |
1086 | struct mwifiex_ie_types_data **tlv_data) | |
1087 | { | |
1088 | struct mwifiex_ie_types_data *current_tlv; | |
1089 | u32 tlv_buf_left; | |
1090 | u32 tlv_type; | |
1091 | u32 tlv_len; | |
1092 | ||
1093 | current_tlv = tlv; | |
1094 | tlv_buf_left = tlv_buf_size; | |
1095 | *tlv_data = NULL; | |
1096 | ||
1097 | dev_dbg(adapter->dev, "info: SCAN_RESP: tlv_buf_size = %d\n", | |
cff23cec | 1098 | tlv_buf_size); |
5e6e3a92 BZ |
1099 | |
1100 | while (tlv_buf_left >= sizeof(struct mwifiex_ie_types_header)) { | |
1101 | ||
1102 | tlv_type = le16_to_cpu(current_tlv->header.type); | |
1103 | tlv_len = le16_to_cpu(current_tlv->header.len); | |
1104 | ||
1105 | if (sizeof(tlv->header) + tlv_len > tlv_buf_left) { | |
1106 | dev_err(adapter->dev, "SCAN_RESP: TLV buffer corrupt\n"); | |
1107 | break; | |
1108 | } | |
1109 | ||
1110 | if (req_tlv_type == tlv_type) { | |
1111 | switch (tlv_type) { | |
1112 | case TLV_TYPE_TSFTIMESTAMP: | |
1113 | dev_dbg(adapter->dev, "info: SCAN_RESP: TSF " | |
1114 | "timestamp TLV, len = %d\n", tlv_len); | |
2c208890 | 1115 | *tlv_data = current_tlv; |
5e6e3a92 BZ |
1116 | break; |
1117 | case TLV_TYPE_CHANNELBANDLIST: | |
1118 | dev_dbg(adapter->dev, "info: SCAN_RESP: channel" | |
1119 | " band list TLV, len = %d\n", tlv_len); | |
2c208890 | 1120 | *tlv_data = current_tlv; |
5e6e3a92 BZ |
1121 | break; |
1122 | default: | |
1123 | dev_err(adapter->dev, | |
1124 | "SCAN_RESP: unhandled TLV = %d\n", | |
1125 | tlv_type); | |
1126 | /* Give up, this seems corrupted */ | |
1127 | return; | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | if (*tlv_data) | |
1132 | break; | |
1133 | ||
1134 | ||
1135 | tlv_buf_left -= (sizeof(tlv->header) + tlv_len); | |
1136 | current_tlv = | |
1137 | (struct mwifiex_ie_types_data *) (current_tlv->data + | |
1138 | tlv_len); | |
1139 | ||
1140 | } /* while */ | |
1141 | } | |
1142 | ||
1143 | /* | |
7c6fa2a8 AK |
1144 | * This function parses provided beacon buffer and updates |
1145 | * respective fields in bss descriptor structure. | |
5e6e3a92 | 1146 | */ |
9558a407 AK |
1147 | int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter, |
1148 | struct mwifiex_bssdescriptor *bss_entry) | |
5e6e3a92 BZ |
1149 | { |
1150 | int ret = 0; | |
1151 | u8 element_id; | |
1152 | struct ieee_types_fh_param_set *fh_param_set; | |
1153 | struct ieee_types_ds_param_set *ds_param_set; | |
1154 | struct ieee_types_cf_param_set *cf_param_set; | |
1155 | struct ieee_types_ibss_param_set *ibss_param_set; | |
5e6e3a92 BZ |
1156 | u8 *current_ptr; |
1157 | u8 *rate; | |
1158 | u8 element_len; | |
1159 | u16 total_ie_len; | |
1160 | u8 bytes_to_copy; | |
1161 | u8 rate_size; | |
5e6e3a92 | 1162 | u8 found_data_rate_ie; |
7c6fa2a8 | 1163 | u32 bytes_left; |
5e6e3a92 BZ |
1164 | struct ieee_types_vendor_specific *vendor_ie; |
1165 | const u8 wpa_oui[4] = { 0x00, 0x50, 0xf2, 0x01 }; | |
1166 | const u8 wmm_oui[4] = { 0x00, 0x50, 0xf2, 0x02 }; | |
1167 | ||
1168 | found_data_rate_ie = false; | |
1169 | rate_size = 0; | |
9558a407 AK |
1170 | current_ptr = bss_entry->beacon_buf; |
1171 | bytes_left = bss_entry->beacon_buf_size; | |
5e6e3a92 BZ |
1172 | |
1173 | /* Process variable IE */ | |
7c6fa2a8 | 1174 | while (bytes_left >= 2) { |
5e6e3a92 BZ |
1175 | element_id = *current_ptr; |
1176 | element_len = *(current_ptr + 1); | |
1177 | total_ie_len = element_len + sizeof(struct ieee_types_header); | |
1178 | ||
7c6fa2a8 | 1179 | if (bytes_left < total_ie_len) { |
5e6e3a92 BZ |
1180 | dev_err(adapter->dev, "err: InterpretIE: in processing" |
1181 | " IE, bytes left < IE length\n"); | |
7c6fa2a8 | 1182 | return -1; |
5e6e3a92 BZ |
1183 | } |
1184 | switch (element_id) { | |
1185 | case WLAN_EID_SSID: | |
1186 | bss_entry->ssid.ssid_len = element_len; | |
1187 | memcpy(bss_entry->ssid.ssid, (current_ptr + 2), | |
1188 | element_len); | |
cff23cec YAP |
1189 | dev_dbg(adapter->dev, |
1190 | "info: InterpretIE: ssid: %-32s\n", | |
1191 | bss_entry->ssid.ssid); | |
5e6e3a92 BZ |
1192 | break; |
1193 | ||
1194 | case WLAN_EID_SUPP_RATES: | |
1195 | memcpy(bss_entry->data_rates, current_ptr + 2, | |
1196 | element_len); | |
1197 | memcpy(bss_entry->supported_rates, current_ptr + 2, | |
1198 | element_len); | |
1199 | rate_size = element_len; | |
1200 | found_data_rate_ie = true; | |
1201 | break; | |
1202 | ||
1203 | case WLAN_EID_FH_PARAMS: | |
1204 | fh_param_set = | |
1205 | (struct ieee_types_fh_param_set *) current_ptr; | |
1206 | memcpy(&bss_entry->phy_param_set.fh_param_set, | |
1207 | fh_param_set, | |
1208 | sizeof(struct ieee_types_fh_param_set)); | |
1209 | break; | |
1210 | ||
1211 | case WLAN_EID_DS_PARAMS: | |
1212 | ds_param_set = | |
1213 | (struct ieee_types_ds_param_set *) current_ptr; | |
1214 | ||
1215 | bss_entry->channel = ds_param_set->current_chan; | |
1216 | ||
1217 | memcpy(&bss_entry->phy_param_set.ds_param_set, | |
1218 | ds_param_set, | |
1219 | sizeof(struct ieee_types_ds_param_set)); | |
1220 | break; | |
1221 | ||
1222 | case WLAN_EID_CF_PARAMS: | |
1223 | cf_param_set = | |
1224 | (struct ieee_types_cf_param_set *) current_ptr; | |
1225 | memcpy(&bss_entry->ss_param_set.cf_param_set, | |
1226 | cf_param_set, | |
1227 | sizeof(struct ieee_types_cf_param_set)); | |
1228 | break; | |
1229 | ||
1230 | case WLAN_EID_IBSS_PARAMS: | |
1231 | ibss_param_set = | |
1232 | (struct ieee_types_ibss_param_set *) | |
1233 | current_ptr; | |
1234 | memcpy(&bss_entry->ss_param_set.ibss_param_set, | |
1235 | ibss_param_set, | |
1236 | sizeof(struct ieee_types_ibss_param_set)); | |
1237 | break; | |
1238 | ||
1239 | case WLAN_EID_ERP_INFO: | |
1240 | bss_entry->erp_flags = *(current_ptr + 2); | |
1241 | break; | |
1242 | ||
2a7305c8 AK |
1243 | case WLAN_EID_PWR_CONSTRAINT: |
1244 | bss_entry->local_constraint = *(current_ptr + 2); | |
1245 | bss_entry->sensed_11h = true; | |
1246 | break; | |
1247 | ||
1248 | case WLAN_EID_CHANNEL_SWITCH: | |
1249 | bss_entry->chan_sw_ie_present = true; | |
1250 | case WLAN_EID_PWR_CAPABILITY: | |
1251 | case WLAN_EID_TPC_REPORT: | |
1252 | case WLAN_EID_QUIET: | |
1253 | bss_entry->sensed_11h = true; | |
1254 | break; | |
1255 | ||
5e6e3a92 BZ |
1256 | case WLAN_EID_EXT_SUPP_RATES: |
1257 | /* | |
1258 | * Only process extended supported rate | |
1259 | * if data rate is already found. | |
1260 | * Data rate IE should come before | |
1261 | * extended supported rate IE | |
1262 | */ | |
1263 | if (found_data_rate_ie) { | |
1264 | if ((element_len + rate_size) > | |
1265 | MWIFIEX_SUPPORTED_RATES) | |
1266 | bytes_to_copy = | |
1267 | (MWIFIEX_SUPPORTED_RATES - | |
1268 | rate_size); | |
1269 | else | |
1270 | bytes_to_copy = element_len; | |
1271 | ||
1272 | rate = (u8 *) bss_entry->data_rates; | |
1273 | rate += rate_size; | |
1274 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1275 | ||
1276 | rate = (u8 *) bss_entry->supported_rates; | |
1277 | rate += rate_size; | |
1278 | memcpy(rate, current_ptr + 2, bytes_to_copy); | |
1279 | } | |
1280 | break; | |
1281 | ||
1282 | case WLAN_EID_VENDOR_SPECIFIC: | |
1283 | vendor_ie = (struct ieee_types_vendor_specific *) | |
1284 | current_ptr; | |
1285 | ||
1286 | if (!memcmp | |
1287 | (vendor_ie->vend_hdr.oui, wpa_oui, | |
1288 | sizeof(wpa_oui))) { | |
1289 | bss_entry->bcn_wpa_ie = | |
1290 | (struct ieee_types_vendor_specific *) | |
1291 | current_ptr; | |
cff23cec YAP |
1292 | bss_entry->wpa_offset = (u16) |
1293 | (current_ptr - bss_entry->beacon_buf); | |
5e6e3a92 BZ |
1294 | } else if (!memcmp(vendor_ie->vend_hdr.oui, wmm_oui, |
1295 | sizeof(wmm_oui))) { | |
1296 | if (total_ie_len == | |
cff23cec YAP |
1297 | sizeof(struct ieee_types_wmm_parameter) || |
1298 | total_ie_len == | |
5e6e3a92 BZ |
1299 | sizeof(struct ieee_types_wmm_info)) |
1300 | /* | |
1301 | * Only accept and copy the WMM IE if | |
1302 | * it matches the size expected for the | |
1303 | * WMM Info IE or the WMM Parameter IE. | |
1304 | */ | |
1305 | memcpy((u8 *) &bss_entry->wmm_ie, | |
1306 | current_ptr, total_ie_len); | |
1307 | } | |
1308 | break; | |
1309 | case WLAN_EID_RSN: | |
1310 | bss_entry->bcn_rsn_ie = | |
1311 | (struct ieee_types_generic *) current_ptr; | |
1312 | bss_entry->rsn_offset = (u16) (current_ptr - | |
1313 | bss_entry->beacon_buf); | |
1314 | break; | |
1315 | case WLAN_EID_BSS_AC_ACCESS_DELAY: | |
1316 | bss_entry->bcn_wapi_ie = | |
1317 | (struct ieee_types_generic *) current_ptr; | |
1318 | bss_entry->wapi_offset = (u16) (current_ptr - | |
1319 | bss_entry->beacon_buf); | |
1320 | break; | |
1321 | case WLAN_EID_HT_CAPABILITY: | |
1322 | bss_entry->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
1323 | (current_ptr + | |
1324 | sizeof(struct ieee_types_header)); | |
1325 | bss_entry->ht_cap_offset = (u16) (current_ptr + | |
1326 | sizeof(struct ieee_types_header) - | |
1327 | bss_entry->beacon_buf); | |
1328 | break; | |
074d46d1 JB |
1329 | case WLAN_EID_HT_OPERATION: |
1330 | bss_entry->bcn_ht_oper = | |
1331 | (struct ieee80211_ht_operation *)(current_ptr + | |
5e6e3a92 BZ |
1332 | sizeof(struct ieee_types_header)); |
1333 | bss_entry->ht_info_offset = (u16) (current_ptr + | |
1334 | sizeof(struct ieee_types_header) - | |
1335 | bss_entry->beacon_buf); | |
1336 | break; | |
a5f39056 YAP |
1337 | case WLAN_EID_VHT_CAPABILITY: |
1338 | bss_entry->disable_11ac = false; | |
1339 | bss_entry->bcn_vht_cap = | |
1340 | (void *)(current_ptr + | |
1341 | sizeof(struct ieee_types_header)); | |
1342 | bss_entry->vht_cap_offset = | |
1343 | (u16)((u8 *)bss_entry->bcn_vht_cap - | |
1344 | bss_entry->beacon_buf); | |
1345 | break; | |
1346 | case WLAN_EID_VHT_OPERATION: | |
1347 | bss_entry->bcn_vht_oper = | |
1348 | (void *)(current_ptr + | |
1349 | sizeof(struct ieee_types_header)); | |
1350 | bss_entry->vht_info_offset = | |
1351 | (u16)((u8 *)bss_entry->bcn_vht_oper - | |
1352 | bss_entry->beacon_buf); | |
1353 | break; | |
5e6e3a92 | 1354 | case WLAN_EID_BSS_COEX_2040: |
cf831ffe AK |
1355 | bss_entry->bcn_bss_co_2040 = current_ptr; |
1356 | bss_entry->bss_co_2040_offset = | |
1357 | (u16) (current_ptr - bss_entry->beacon_buf); | |
5e6e3a92 BZ |
1358 | break; |
1359 | case WLAN_EID_EXT_CAPABILITY: | |
cf831ffe AK |
1360 | bss_entry->bcn_ext_cap = current_ptr; |
1361 | bss_entry->ext_cap_offset = | |
1362 | (u16) (current_ptr - bss_entry->beacon_buf); | |
5e6e3a92 | 1363 | break; |
a5f39056 | 1364 | case WLAN_EID_OPMODE_NOTIF: |
cf831ffe | 1365 | bss_entry->oper_mode = (void *)current_ptr; |
a5f39056 YAP |
1366 | bss_entry->oper_mode_offset = |
1367 | (u16)((u8 *)bss_entry->oper_mode - | |
1368 | bss_entry->beacon_buf); | |
1369 | break; | |
5e6e3a92 BZ |
1370 | default: |
1371 | break; | |
1372 | } | |
1373 | ||
1374 | current_ptr += element_len + 2; | |
1375 | ||
1376 | /* Need to account for IE ID and IE Len */ | |
7c6fa2a8 | 1377 | bytes_left -= (element_len + 2); |
5e6e3a92 | 1378 | |
7c6fa2a8 | 1379 | } /* while (bytes_left > 2) */ |
5e6e3a92 BZ |
1380 | return ret; |
1381 | } | |
1382 | ||
5e6e3a92 BZ |
1383 | /* |
1384 | * This function converts radio type scan parameter to a band configuration | |
1385 | * to be used in join command. | |
1386 | */ | |
1387 | static u8 | |
1388 | mwifiex_radio_type_to_band(u8 radio_type) | |
1389 | { | |
5e6e3a92 BZ |
1390 | switch (radio_type) { |
1391 | case HostCmd_SCAN_RADIO_TYPE_A: | |
636c4598 | 1392 | return BAND_A; |
5e6e3a92 BZ |
1393 | case HostCmd_SCAN_RADIO_TYPE_BG: |
1394 | default: | |
636c4598 | 1395 | return BAND_G; |
5e6e3a92 | 1396 | } |
5e6e3a92 BZ |
1397 | } |
1398 | ||
5e6e3a92 BZ |
1399 | /* |
1400 | * This is an internal function used to start a scan based on an input | |
1401 | * configuration. | |
1402 | * | |
1403 | * This uses the input user scan configuration information when provided in | |
1404 | * order to send the appropriate scan commands to firmware to populate or | |
1405 | * update the internal driver scan table. | |
1406 | */ | |
1a1fb970 AK |
1407 | int mwifiex_scan_networks(struct mwifiex_private *priv, |
1408 | const struct mwifiex_user_scan_cfg *user_scan_in) | |
5e6e3a92 | 1409 | { |
c2476335 | 1410 | int ret; |
5e6e3a92 | 1411 | struct mwifiex_adapter *adapter = priv->adapter; |
270e58e8 YAP |
1412 | struct cmd_ctrl_node *cmd_node; |
1413 | union mwifiex_scan_cmd_config_tlv *scan_cfg_out; | |
5e6e3a92 | 1414 | struct mwifiex_ie_types_chan_list_param_set *chan_list_out; |
5e6e3a92 | 1415 | struct mwifiex_chan_scan_param_set *scan_chan_list; |
5e6e3a92 BZ |
1416 | u8 filtered_scan; |
1417 | u8 scan_current_chan_only; | |
1418 | u8 max_chan_per_scan; | |
1419 | unsigned long flags; | |
1420 | ||
600f5d90 | 1421 | if (adapter->scan_processing) { |
c2476335 BZ |
1422 | dev_err(adapter->dev, "cmd: Scan already in process...\n"); |
1423 | return -EBUSY; | |
5e6e3a92 BZ |
1424 | } |
1425 | ||
600f5d90 | 1426 | if (priv->scan_block) { |
c2476335 | 1427 | dev_err(adapter->dev, |
5e6e3a92 | 1428 | "cmd: Scan is blocked during association...\n"); |
c2476335 | 1429 | return -EBUSY; |
5e6e3a92 BZ |
1430 | } |
1431 | ||
e00483f7 AK |
1432 | if (adapter->surprise_removed || adapter->is_cmd_timedout) { |
1433 | dev_err(adapter->dev, | |
1434 | "Ignore scan. Card removed or firmware in bad state\n"); | |
1435 | return -EFAULT; | |
1436 | } | |
1437 | ||
c2476335 BZ |
1438 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); |
1439 | adapter->scan_processing = true; | |
1440 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1441 | ||
5e6e3a92 | 1442 | scan_cfg_out = kzalloc(sizeof(union mwifiex_scan_cmd_config_tlv), |
0d2e7a5c | 1443 | GFP_KERNEL); |
5e6e3a92 | 1444 | if (!scan_cfg_out) { |
061f2e69 AK |
1445 | ret = -ENOMEM; |
1446 | goto done; | |
5e6e3a92 BZ |
1447 | } |
1448 | ||
0d2e7a5c JP |
1449 | scan_chan_list = kcalloc(MWIFIEX_USER_SCAN_CHAN_MAX, |
1450 | sizeof(struct mwifiex_chan_scan_param_set), | |
1451 | GFP_KERNEL); | |
5e6e3a92 | 1452 | if (!scan_chan_list) { |
5e6e3a92 | 1453 | kfree(scan_cfg_out); |
061f2e69 AK |
1454 | ret = -ENOMEM; |
1455 | goto done; | |
5e6e3a92 BZ |
1456 | } |
1457 | ||
cff23cec YAP |
1458 | mwifiex_config_scan(priv, user_scan_in, &scan_cfg_out->config, |
1459 | &chan_list_out, scan_chan_list, &max_chan_per_scan, | |
1460 | &filtered_scan, &scan_current_chan_only); | |
5e6e3a92 | 1461 | |
600f5d90 AK |
1462 | ret = mwifiex_scan_channel_list(priv, max_chan_per_scan, filtered_scan, |
1463 | &scan_cfg_out->config, chan_list_out, | |
1464 | scan_chan_list); | |
5e6e3a92 BZ |
1465 | |
1466 | /* Get scan command from scan_pending_q and put to cmd_pending_q */ | |
1467 | if (!ret) { | |
1468 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1469 | if (!list_empty(&adapter->scan_pending_q)) { | |
1470 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
cff23cec | 1471 | struct cmd_ctrl_node, list); |
5e6e3a92 BZ |
1472 | list_del(&cmd_node->list); |
1473 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
cff23cec | 1474 | flags); |
5e6e3a92 BZ |
1475 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, |
1476 | true); | |
1a1fb970 | 1477 | queue_work(adapter->workqueue, &adapter->main_work); |
00d7ea11 AK |
1478 | |
1479 | /* Perform internal scan synchronously */ | |
21de979e BZ |
1480 | if (!priv->scan_request) { |
1481 | dev_dbg(adapter->dev, "wait internal scan\n"); | |
00d7ea11 | 1482 | mwifiex_wait_queue_complete(adapter, cmd_node); |
21de979e | 1483 | } |
5e6e3a92 BZ |
1484 | } else { |
1485 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, | |
1486 | flags); | |
1487 | } | |
5e6e3a92 BZ |
1488 | } |
1489 | ||
1490 | kfree(scan_cfg_out); | |
1491 | kfree(scan_chan_list); | |
061f2e69 AK |
1492 | done: |
1493 | if (ret) { | |
1494 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1495 | adapter->scan_processing = false; | |
1496 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1497 | } | |
5e6e3a92 BZ |
1498 | return ret; |
1499 | } | |
1500 | ||
1501 | /* | |
1502 | * This function prepares a scan command to be sent to the firmware. | |
1503 | * | |
1504 | * This uses the scan command configuration sent to the command processing | |
1505 | * module in command preparation stage to configure a scan command structure | |
1506 | * to send to firmware. | |
1507 | * | |
1508 | * The fixed fields specifying the BSS type and BSSID filters as well as a | |
1509 | * variable number/length of TLVs are sent in the command to firmware. | |
1510 | * | |
1511 | * Preparation also includes - | |
1512 | * - Setting command ID, and proper size | |
1513 | * - Ensuring correct endian-ness | |
1514 | */ | |
a5ffddb7 AK |
1515 | int mwifiex_cmd_802_11_scan(struct host_cmd_ds_command *cmd, |
1516 | struct mwifiex_scan_cmd_config *scan_cfg) | |
5e6e3a92 BZ |
1517 | { |
1518 | struct host_cmd_ds_802_11_scan *scan_cmd = &cmd->params.scan; | |
5e6e3a92 BZ |
1519 | |
1520 | /* Set fixed field variables in scan command */ | |
1521 | scan_cmd->bss_mode = scan_cfg->bss_mode; | |
1522 | memcpy(scan_cmd->bssid, scan_cfg->specific_bssid, | |
1523 | sizeof(scan_cmd->bssid)); | |
1524 | memcpy(scan_cmd->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len); | |
1525 | ||
1526 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN); | |
1527 | ||
1528 | /* Size is equal to the sizeof(fixed portions) + the TLV len + header */ | |
1529 | cmd->size = cpu_to_le16((u16) (sizeof(scan_cmd->bss_mode) | |
1530 | + sizeof(scan_cmd->bssid) | |
1531 | + scan_cfg->tlv_buf_len + S_DS_GEN)); | |
1532 | ||
1533 | return 0; | |
1534 | } | |
1535 | ||
7c6fa2a8 AK |
1536 | /* |
1537 | * This function checks compatibility of requested network with current | |
1538 | * driver settings. | |
1539 | */ | |
1540 | int mwifiex_check_network_compatibility(struct mwifiex_private *priv, | |
1541 | struct mwifiex_bssdescriptor *bss_desc) | |
1542 | { | |
1543 | int ret = -1; | |
1544 | ||
1545 | if (!bss_desc) | |
1546 | return -1; | |
1547 | ||
6685d109 YAP |
1548 | if ((mwifiex_get_cfp(priv, (u8) bss_desc->bss_band, |
1549 | (u16) bss_desc->channel, 0))) { | |
7c6fa2a8 AK |
1550 | switch (priv->bss_mode) { |
1551 | case NL80211_IFTYPE_STATION: | |
1552 | case NL80211_IFTYPE_ADHOC: | |
1553 | ret = mwifiex_is_network_compatible(priv, bss_desc, | |
1554 | priv->bss_mode); | |
1555 | if (ret) | |
06975884 AK |
1556 | dev_err(priv->adapter->dev, |
1557 | "Incompatible network settings\n"); | |
2f9279b5 | 1558 | break; |
7c6fa2a8 | 1559 | default: |
2f9279b5 | 1560 | ret = 0; |
7c6fa2a8 AK |
1561 | } |
1562 | } | |
1563 | ||
1564 | return ret; | |
1565 | } | |
1566 | ||
9558a407 AK |
1567 | static int mwifiex_update_curr_bss_params(struct mwifiex_private *priv, |
1568 | struct cfg80211_bss *bss) | |
7c6fa2a8 | 1569 | { |
db652e4b | 1570 | struct mwifiex_bssdescriptor *bss_desc; |
7c6fa2a8 AK |
1571 | int ret; |
1572 | unsigned long flags; | |
7c6fa2a8 AK |
1573 | |
1574 | /* Allocate and fill new bss descriptor */ | |
0d2e7a5c JP |
1575 | bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor), GFP_KERNEL); |
1576 | if (!bss_desc) | |
7c6fa2a8 | 1577 | return -ENOMEM; |
5982b47a | 1578 | |
9558a407 | 1579 | ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc); |
7c6fa2a8 AK |
1580 | if (ret) |
1581 | goto done; | |
1582 | ||
1583 | ret = mwifiex_check_network_compatibility(priv, bss_desc); | |
1584 | if (ret) | |
1585 | goto done; | |
1586 | ||
7c6fa2a8 | 1587 | spin_lock_irqsave(&priv->curr_bcn_buf_lock, flags); |
7c6fa2a8 AK |
1588 | /* Make a copy of current BSSID descriptor */ |
1589 | memcpy(&priv->curr_bss_params.bss_descriptor, bss_desc, | |
cff23cec | 1590 | sizeof(priv->curr_bss_params.bss_descriptor)); |
d837a2ae BZ |
1591 | |
1592 | /* The contents of beacon_ie will be copied to its own buffer | |
1593 | * in mwifiex_save_curr_bcn() | |
1594 | */ | |
7c6fa2a8 AK |
1595 | mwifiex_save_curr_bcn(priv); |
1596 | spin_unlock_irqrestore(&priv->curr_bcn_buf_lock, flags); | |
1597 | ||
1598 | done: | |
d837a2ae BZ |
1599 | /* beacon_ie buffer was allocated in function |
1600 | * mwifiex_fill_new_bss_desc(). Free it now. | |
1601 | */ | |
1602 | kfree(bss_desc->beacon_buf); | |
7c6fa2a8 | 1603 | kfree(bss_desc); |
7c6fa2a8 AK |
1604 | return 0; |
1605 | } | |
1606 | ||
3b4d5c64 AK |
1607 | static int |
1608 | mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info, | |
1609 | u32 *bytes_left, u64 fw_tsf, u8 *radio_type, | |
21f58d20 | 1610 | bool ext_scan, s32 rssi_val) |
3b4d5c64 AK |
1611 | { |
1612 | struct mwifiex_adapter *adapter = priv->adapter; | |
1613 | struct mwifiex_chan_freq_power *cfp; | |
1614 | struct cfg80211_bss *bss; | |
1615 | u8 bssid[ETH_ALEN]; | |
1616 | s32 rssi; | |
1617 | const u8 *ie_buf; | |
1618 | size_t ie_len; | |
1619 | u16 channel = 0; | |
1620 | u16 beacon_size = 0; | |
1621 | u32 curr_bcn_bytes; | |
1622 | u32 freq; | |
1623 | u16 beacon_period; | |
1624 | u16 cap_info_bitmap; | |
1625 | u8 *current_ptr; | |
1626 | u64 timestamp; | |
1627 | struct mwifiex_fixed_bcn_param *bcn_param; | |
1628 | struct mwifiex_bss_priv *bss_priv; | |
1629 | ||
1630 | if (*bytes_left >= sizeof(beacon_size)) { | |
1631 | /* Extract & convert beacon size from command buffer */ | |
798ea8ee | 1632 | beacon_size = le16_to_cpu(*(__le16 *)(*bss_info)); |
3b4d5c64 AK |
1633 | *bytes_left -= sizeof(beacon_size); |
1634 | *bss_info += sizeof(beacon_size); | |
1635 | } | |
1636 | ||
1637 | if (!beacon_size || beacon_size > *bytes_left) { | |
1638 | *bss_info += *bytes_left; | |
1639 | *bytes_left = 0; | |
1640 | return -EFAULT; | |
1641 | } | |
1642 | ||
1643 | /* Initialize the current working beacon pointer for this BSS | |
1644 | * iteration | |
1645 | */ | |
1646 | current_ptr = *bss_info; | |
1647 | ||
1648 | /* Advance the return beacon pointer past the current beacon */ | |
1649 | *bss_info += beacon_size; | |
1650 | *bytes_left -= beacon_size; | |
1651 | ||
1652 | curr_bcn_bytes = beacon_size; | |
1653 | ||
1654 | /* First 5 fields are bssid, RSSI(for legacy scan only), | |
1655 | * time stamp, beacon interval, and capability information | |
1656 | */ | |
1657 | if (curr_bcn_bytes < ETH_ALEN + sizeof(u8) + | |
1658 | sizeof(struct mwifiex_fixed_bcn_param)) { | |
1659 | dev_err(adapter->dev, "InterpretIE: not enough bytes left\n"); | |
1660 | return -EFAULT; | |
1661 | } | |
1662 | ||
1663 | memcpy(bssid, current_ptr, ETH_ALEN); | |
1664 | current_ptr += ETH_ALEN; | |
1665 | curr_bcn_bytes -= ETH_ALEN; | |
1666 | ||
1667 | if (!ext_scan) { | |
45d18c56 | 1668 | rssi = (s32) *current_ptr; |
3b4d5c64 AK |
1669 | rssi = (-rssi) * 100; /* Convert dBm to mBm */ |
1670 | current_ptr += sizeof(u8); | |
1671 | curr_bcn_bytes -= sizeof(u8); | |
1672 | dev_dbg(adapter->dev, "info: InterpretIE: RSSI=%d\n", rssi); | |
21f58d20 AK |
1673 | } else { |
1674 | rssi = rssi_val; | |
3b4d5c64 AK |
1675 | } |
1676 | ||
1677 | bcn_param = (struct mwifiex_fixed_bcn_param *)current_ptr; | |
1678 | current_ptr += sizeof(*bcn_param); | |
1679 | curr_bcn_bytes -= sizeof(*bcn_param); | |
1680 | ||
1681 | timestamp = le64_to_cpu(bcn_param->timestamp); | |
1682 | beacon_period = le16_to_cpu(bcn_param->beacon_period); | |
1683 | ||
1684 | cap_info_bitmap = le16_to_cpu(bcn_param->cap_info_bitmap); | |
1685 | dev_dbg(adapter->dev, "info: InterpretIE: capabilities=0x%X\n", | |
1686 | cap_info_bitmap); | |
1687 | ||
1688 | /* Rest of the current buffer are IE's */ | |
1689 | ie_buf = current_ptr; | |
1690 | ie_len = curr_bcn_bytes; | |
1691 | dev_dbg(adapter->dev, "info: InterpretIE: IELength for this AP = %d\n", | |
1692 | curr_bcn_bytes); | |
1693 | ||
1694 | while (curr_bcn_bytes >= sizeof(struct ieee_types_header)) { | |
1695 | u8 element_id, element_len; | |
1696 | ||
1697 | element_id = *current_ptr; | |
1698 | element_len = *(current_ptr + 1); | |
1699 | if (curr_bcn_bytes < element_len + | |
1700 | sizeof(struct ieee_types_header)) { | |
1701 | dev_err(adapter->dev, | |
1702 | "%s: bytes left < IE length\n", __func__); | |
1703 | return -EFAULT; | |
1704 | } | |
1705 | if (element_id == WLAN_EID_DS_PARAMS) { | |
1706 | channel = *(current_ptr + | |
1707 | sizeof(struct ieee_types_header)); | |
1708 | break; | |
1709 | } | |
1710 | ||
1711 | current_ptr += element_len + sizeof(struct ieee_types_header); | |
1712 | curr_bcn_bytes -= element_len + | |
1713 | sizeof(struct ieee_types_header); | |
1714 | } | |
1715 | ||
1716 | if (channel) { | |
1717 | struct ieee80211_channel *chan; | |
1718 | u8 band; | |
1719 | ||
1720 | /* Skip entry if on csa closed channel */ | |
1721 | if (channel == priv->csa_chan) { | |
1722 | dev_dbg(adapter->dev, | |
1723 | "Dropping entry on csa closed channel\n"); | |
1724 | return 0; | |
1725 | } | |
1726 | ||
1727 | band = BAND_G; | |
1728 | if (radio_type) | |
1729 | band = mwifiex_radio_type_to_band(*radio_type & | |
1730 | (BIT(0) | BIT(1))); | |
1731 | ||
1732 | cfp = mwifiex_get_cfp(priv, band, channel, 0); | |
1733 | ||
1734 | freq = cfp ? cfp->freq : 0; | |
1735 | ||
1736 | chan = ieee80211_get_channel(priv->wdev->wiphy, freq); | |
1737 | ||
1738 | if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) { | |
1739 | bss = cfg80211_inform_bss(priv->wdev->wiphy, | |
5bc8c1f2 JB |
1740 | chan, CFG80211_BSS_FTYPE_UNKNOWN, |
1741 | bssid, timestamp, | |
3b4d5c64 AK |
1742 | cap_info_bitmap, beacon_period, |
1743 | ie_buf, ie_len, rssi, GFP_KERNEL); | |
1744 | bss_priv = (struct mwifiex_bss_priv *)bss->priv; | |
1745 | bss_priv->band = band; | |
1746 | bss_priv->fw_tsf = fw_tsf; | |
1747 | if (priv->media_connected && | |
1748 | !memcmp(bssid, priv->curr_bss_params.bss_descriptor | |
1749 | .mac_address, ETH_ALEN)) | |
1750 | mwifiex_update_curr_bss_params(priv, bss); | |
1751 | cfg80211_put_bss(priv->wdev->wiphy, bss); | |
1752 | } | |
1753 | } else { | |
1754 | dev_dbg(adapter->dev, "missing BSS channel IE\n"); | |
1755 | } | |
1756 | ||
1757 | return 0; | |
1758 | } | |
1759 | ||
21445049 AP |
1760 | static void mwifiex_complete_scan(struct mwifiex_private *priv) |
1761 | { | |
1762 | struct mwifiex_adapter *adapter = priv->adapter; | |
1763 | ||
bf354433 | 1764 | adapter->survey_idx = 0; |
21445049 AP |
1765 | if (adapter->curr_cmd->wait_q_enabled) { |
1766 | adapter->cmd_wait_q.status = 0; | |
1767 | if (!priv->scan_request) { | |
1768 | dev_dbg(adapter->dev, "complete internal scan\n"); | |
1769 | mwifiex_complete_cmd(adapter, adapter->curr_cmd); | |
1770 | } | |
1771 | } | |
1772 | } | |
1773 | ||
d44b5c2f AK |
1774 | static void mwifiex_check_next_scan_command(struct mwifiex_private *priv) |
1775 | { | |
1776 | struct mwifiex_adapter *adapter = priv->adapter; | |
d8d91253 | 1777 | struct cmd_ctrl_node *cmd_node, *tmp_node; |
d44b5c2f AK |
1778 | unsigned long flags; |
1779 | ||
1780 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); | |
1781 | if (list_empty(&adapter->scan_pending_q)) { | |
1782 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1783 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1784 | adapter->scan_processing = false; | |
1785 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1786 | ||
21445049 AP |
1787 | if (!adapter->ext_scan) |
1788 | mwifiex_complete_scan(priv); | |
1789 | ||
d44b5c2f AK |
1790 | if (priv->scan_request) { |
1791 | dev_dbg(adapter->dev, "info: notifying scan done\n"); | |
1792 | cfg80211_scan_done(priv->scan_request, 0); | |
1793 | priv->scan_request = NULL; | |
1794 | } else { | |
1795 | priv->scan_aborting = false; | |
1796 | dev_dbg(adapter->dev, "info: scan already aborted\n"); | |
1797 | } | |
d8d91253 AK |
1798 | } else if ((priv->scan_aborting && !priv->scan_request) || |
1799 | priv->scan_block) { | |
1800 | list_for_each_entry_safe(cmd_node, tmp_node, | |
1801 | &adapter->scan_pending_q, list) { | |
d44b5c2f | 1802 | list_del(&cmd_node->list); |
d8d91253 AK |
1803 | mwifiex_insert_cmd_to_free_q(adapter, cmd_node); |
1804 | } | |
1805 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1806 | ||
1807 | spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags); | |
1808 | adapter->scan_processing = false; | |
1809 | spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); | |
1810 | ||
1811 | if (priv->scan_request) { | |
1812 | dev_dbg(adapter->dev, "info: aborting scan\n"); | |
1813 | cfg80211_scan_done(priv->scan_request, 1); | |
1814 | priv->scan_request = NULL; | |
1815 | } else { | |
1816 | priv->scan_aborting = false; | |
1817 | dev_dbg(adapter->dev, "info: scan already aborted\n"); | |
d44b5c2f | 1818 | } |
d8d91253 AK |
1819 | } else { |
1820 | /* Get scan command from scan_pending_q and put to | |
1821 | * cmd_pending_q | |
1822 | */ | |
1823 | cmd_node = list_first_entry(&adapter->scan_pending_q, | |
1824 | struct cmd_ctrl_node, list); | |
1825 | list_del(&cmd_node->list); | |
1826 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
1827 | mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true); | |
d44b5c2f AK |
1828 | } |
1829 | ||
1830 | return; | |
1831 | } | |
1832 | ||
5e6e3a92 BZ |
1833 | /* |
1834 | * This function handles the command response of scan. | |
1835 | * | |
1836 | * The response buffer for the scan command has the following | |
1837 | * memory layout: | |
1838 | * | |
1839 | * .-------------------------------------------------------------. | |
1840 | * | Header (4 * sizeof(t_u16)): Standard command response hdr | | |
1841 | * .-------------------------------------------------------------. | |
1842 | * | BufSize (t_u16) : sizeof the BSS Description data | | |
1843 | * .-------------------------------------------------------------. | |
1844 | * | NumOfSet (t_u8) : Number of BSS Descs returned | | |
1845 | * .-------------------------------------------------------------. | |
1846 | * | BSSDescription data (variable, size given in BufSize) | | |
1847 | * .-------------------------------------------------------------. | |
1848 | * | TLV data (variable, size calculated using Header->Size, | | |
1849 | * | BufSize and sizeof the fixed fields above) | | |
1850 | * .-------------------------------------------------------------. | |
1851 | */ | |
1852 | int mwifiex_ret_802_11_scan(struct mwifiex_private *priv, | |
600f5d90 | 1853 | struct host_cmd_ds_command *resp) |
5e6e3a92 BZ |
1854 | { |
1855 | int ret = 0; | |
1856 | struct mwifiex_adapter *adapter = priv->adapter; | |
270e58e8 | 1857 | struct host_cmd_ds_802_11_scan_rsp *scan_rsp; |
5e6e3a92 BZ |
1858 | struct mwifiex_ie_types_data *tlv_data; |
1859 | struct mwifiex_ie_types_tsf_timestamp *tsf_tlv; | |
1860 | u8 *bss_info; | |
1861 | u32 scan_resp_size; | |
1862 | u32 bytes_left; | |
5e6e3a92 BZ |
1863 | u32 idx; |
1864 | u32 tlv_buf_size; | |
5e6e3a92 BZ |
1865 | struct mwifiex_ie_types_chan_band_list_param_set *chan_band_tlv; |
1866 | struct chan_band_param_set *chan_band; | |
5e6e3a92 | 1867 | u8 is_bgscan_resp; |
3b4d5c64 AK |
1868 | __le64 fw_tsf = 0; |
1869 | u8 *radio_type; | |
5e6e3a92 BZ |
1870 | |
1871 | is_bgscan_resp = (le16_to_cpu(resp->command) | |
cff23cec | 1872 | == HostCmd_CMD_802_11_BG_SCAN_QUERY); |
5e6e3a92 BZ |
1873 | if (is_bgscan_resp) |
1874 | scan_rsp = &resp->params.bg_scan_query_resp.scan_resp; | |
1875 | else | |
1876 | scan_rsp = &resp->params.scan_resp; | |
1877 | ||
1878 | ||
67a50035 | 1879 | if (scan_rsp->number_of_sets > MWIFIEX_MAX_AP) { |
5e6e3a92 | 1880 | dev_err(adapter->dev, "SCAN_RESP: too many AP returned (%d)\n", |
cff23cec | 1881 | scan_rsp->number_of_sets); |
5e6e3a92 | 1882 | ret = -1; |
8a7d7cbf | 1883 | goto check_next_scan; |
5e6e3a92 BZ |
1884 | } |
1885 | ||
b887664d AK |
1886 | /* Check csa channel expiry before parsing scan response */ |
1887 | mwifiex_11h_get_csa_closed_channel(priv); | |
1888 | ||
5e6e3a92 BZ |
1889 | bytes_left = le16_to_cpu(scan_rsp->bss_descript_size); |
1890 | dev_dbg(adapter->dev, "info: SCAN_RESP: bss_descript_size %d\n", | |
cff23cec | 1891 | bytes_left); |
5e6e3a92 BZ |
1892 | |
1893 | scan_resp_size = le16_to_cpu(resp->size); | |
1894 | ||
1895 | dev_dbg(adapter->dev, | |
1896 | "info: SCAN_RESP: returned %d APs before parsing\n", | |
cff23cec | 1897 | scan_rsp->number_of_sets); |
5e6e3a92 | 1898 | |
5e6e3a92 BZ |
1899 | bss_info = scan_rsp->bss_desc_and_tlv_buffer; |
1900 | ||
1901 | /* | |
1902 | * The size of the TLV buffer is equal to the entire command response | |
1903 | * size (scan_resp_size) minus the fixed fields (sizeof()'s), the | |
1904 | * BSS Descriptions (bss_descript_size as bytesLef) and the command | |
1905 | * response header (S_DS_GEN) | |
1906 | */ | |
1907 | tlv_buf_size = scan_resp_size - (bytes_left | |
1908 | + sizeof(scan_rsp->bss_descript_size) | |
1909 | + sizeof(scan_rsp->number_of_sets) | |
1910 | + S_DS_GEN); | |
1911 | ||
1912 | tlv_data = (struct mwifiex_ie_types_data *) (scan_rsp-> | |
1913 | bss_desc_and_tlv_buffer + | |
1914 | bytes_left); | |
1915 | ||
1916 | /* Search the TLV buffer space in the scan response for any valid | |
1917 | TLVs */ | |
1918 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
1919 | TLV_TYPE_TSFTIMESTAMP, | |
1920 | (struct mwifiex_ie_types_data **) | |
1921 | &tsf_tlv); | |
1922 | ||
1923 | /* Search the TLV buffer space in the scan response for any valid | |
1924 | TLVs */ | |
1925 | mwifiex_ret_802_11_scan_get_tlv_ptrs(adapter, tlv_data, tlv_buf_size, | |
1926 | TLV_TYPE_CHANNELBANDLIST, | |
1927 | (struct mwifiex_ie_types_data **) | |
1928 | &chan_band_tlv); | |
1929 | ||
5e6e3a92 | 1930 | for (idx = 0; idx < scan_rsp->number_of_sets && bytes_left; idx++) { |
5e6e3a92 BZ |
1931 | /* |
1932 | * If the TSF TLV was appended to the scan results, save this | |
b5abcf02 AK |
1933 | * entry's TSF value in the fw_tsf field. It is the firmware's |
1934 | * TSF value at the time the beacon or probe response was | |
1935 | * received. | |
5e6e3a92 | 1936 | */ |
7c6fa2a8 | 1937 | if (tsf_tlv) |
b5abcf02 AK |
1938 | memcpy(&fw_tsf, &tsf_tlv->tsf_data[idx * TSF_DATA_SIZE], |
1939 | sizeof(fw_tsf)); | |
7c6fa2a8 | 1940 | |
3b4d5c64 AK |
1941 | if (chan_band_tlv) { |
1942 | chan_band = &chan_band_tlv->chan_band_param[idx]; | |
1943 | radio_type = &chan_band->radio_type; | |
7c6fa2a8 | 1944 | } else { |
3b4d5c64 | 1945 | radio_type = NULL; |
7c6fa2a8 | 1946 | } |
3b4d5c64 AK |
1947 | |
1948 | ret = mwifiex_parse_single_response_buf(priv, &bss_info, | |
1949 | &bytes_left, | |
1950 | le64_to_cpu(fw_tsf), | |
21f58d20 | 1951 | radio_type, false, 0); |
3b4d5c64 AK |
1952 | if (ret) |
1953 | goto check_next_scan; | |
7c6fa2a8 | 1954 | } |
5e6e3a92 | 1955 | |
8a7d7cbf | 1956 | check_next_scan: |
d44b5c2f | 1957 | mwifiex_check_next_scan_command(priv); |
5e6e3a92 BZ |
1958 | return ret; |
1959 | } | |
1960 | ||
21f58d20 AK |
1961 | /* |
1962 | * This function prepares an extended scan command to be sent to the firmware | |
1963 | * | |
1964 | * This uses the scan command configuration sent to the command processing | |
1965 | * module in command preparation stage to configure a extended scan command | |
1966 | * structure to send to firmware. | |
1967 | */ | |
1968 | int mwifiex_cmd_802_11_scan_ext(struct mwifiex_private *priv, | |
1969 | struct host_cmd_ds_command *cmd, | |
1970 | void *data_buf) | |
1971 | { | |
1972 | struct host_cmd_ds_802_11_scan_ext *ext_scan = &cmd->params.ext_scan; | |
1973 | struct mwifiex_scan_cmd_config *scan_cfg = data_buf; | |
1974 | ||
1975 | memcpy(ext_scan->tlv_buffer, scan_cfg->tlv_buf, scan_cfg->tlv_buf_len); | |
1976 | ||
1977 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SCAN_EXT); | |
1978 | ||
1979 | /* Size is equal to the sizeof(fixed portions) + the TLV len + header */ | |
1980 | cmd->size = cpu_to_le16((u16)(sizeof(ext_scan->reserved) | |
1981 | + scan_cfg->tlv_buf_len + S_DS_GEN)); | |
1982 | ||
1983 | return 0; | |
1984 | } | |
1985 | ||
bf354433 AP |
1986 | static void |
1987 | mwifiex_update_chan_statistics(struct mwifiex_private *priv, | |
1988 | struct mwifiex_ietypes_chanstats *tlv_stat) | |
1989 | { | |
1990 | struct mwifiex_adapter *adapter = priv->adapter; | |
1991 | u8 i, num_chan; | |
1992 | struct mwifiex_fw_chan_stats *fw_chan_stats; | |
1993 | struct mwifiex_chan_stats chan_stats; | |
1994 | ||
1995 | fw_chan_stats = (void *)((u8 *)tlv_stat + | |
1996 | sizeof(struct mwifiex_ie_types_header)); | |
1997 | num_chan = le16_to_cpu(tlv_stat->header.len) / | |
1998 | sizeof(struct mwifiex_chan_stats); | |
1999 | ||
2000 | for (i = 0 ; i < num_chan; i++) { | |
2001 | chan_stats.chan_num = fw_chan_stats->chan_num; | |
2002 | chan_stats.bandcfg = fw_chan_stats->bandcfg; | |
2003 | chan_stats.flags = fw_chan_stats->flags; | |
2004 | chan_stats.noise = fw_chan_stats->noise; | |
2005 | chan_stats.total_bss = le16_to_cpu(fw_chan_stats->total_bss); | |
2006 | chan_stats.cca_scan_dur = | |
2007 | le16_to_cpu(fw_chan_stats->cca_scan_dur); | |
2008 | chan_stats.cca_busy_dur = | |
2009 | le16_to_cpu(fw_chan_stats->cca_busy_dur); | |
2010 | dev_dbg(adapter->dev, | |
2011 | "chan=%d, noise=%d, total_network=%d scan_duration=%d, busy_duration=%d\n", | |
2012 | chan_stats.chan_num, | |
2013 | chan_stats.noise, | |
2014 | chan_stats.total_bss, | |
2015 | chan_stats.cca_scan_dur, | |
2016 | chan_stats.cca_busy_dur); | |
2017 | memcpy(&adapter->chan_stats[adapter->survey_idx++], &chan_stats, | |
2018 | sizeof(struct mwifiex_chan_stats)); | |
2019 | fw_chan_stats++; | |
2020 | } | |
2021 | } | |
2022 | ||
21f58d20 | 2023 | /* This function handles the command response of extended scan */ |
bf354433 AP |
2024 | int mwifiex_ret_802_11_scan_ext(struct mwifiex_private *priv, |
2025 | struct host_cmd_ds_command *resp) | |
21f58d20 | 2026 | { |
3223db20 | 2027 | struct mwifiex_adapter *adapter = priv->adapter; |
bf354433 AP |
2028 | struct host_cmd_ds_802_11_scan_ext *ext_scan_resp; |
2029 | struct mwifiex_ie_types_header *tlv; | |
2030 | struct mwifiex_ietypes_chanstats *tlv_stat; | |
2031 | u16 buf_left, type, len; | |
2032 | ||
3223db20 AP |
2033 | struct host_cmd_ds_command *cmd_ptr; |
2034 | struct cmd_ctrl_node *cmd_node; | |
2035 | unsigned long cmd_flags, scan_flags; | |
2036 | bool complete_scan = false; | |
2037 | ||
21f58d20 | 2038 | dev_dbg(priv->adapter->dev, "info: EXT scan returns successfully\n"); |
21445049 | 2039 | |
bf354433 AP |
2040 | ext_scan_resp = &resp->params.ext_scan; |
2041 | ||
2042 | tlv = (void *)ext_scan_resp->tlv_buffer; | |
2043 | buf_left = le16_to_cpu(resp->size) - (sizeof(*ext_scan_resp) + S_DS_GEN | |
2044 | - 1); | |
2045 | ||
2046 | while (buf_left >= sizeof(struct mwifiex_ie_types_header)) { | |
2047 | type = le16_to_cpu(tlv->type); | |
2048 | len = le16_to_cpu(tlv->len); | |
2049 | ||
2050 | if (buf_left < (sizeof(struct mwifiex_ie_types_header) + len)) { | |
2051 | dev_err(adapter->dev, | |
2052 | "error processing scan response TLVs"); | |
2053 | break; | |
2054 | } | |
2055 | ||
2056 | switch (type) { | |
2057 | case TLV_TYPE_CHANNEL_STATS: | |
2058 | tlv_stat = (void *)tlv; | |
2059 | mwifiex_update_chan_statistics(priv, tlv_stat); | |
2060 | break; | |
2061 | default: | |
2062 | break; | |
2063 | } | |
2064 | ||
2065 | buf_left -= len + sizeof(struct mwifiex_ie_types_header); | |
2066 | tlv = (void *)((u8 *)tlv + len + | |
2067 | sizeof(struct mwifiex_ie_types_header)); | |
2068 | } | |
2069 | ||
3223db20 AP |
2070 | spin_lock_irqsave(&adapter->cmd_pending_q_lock, cmd_flags); |
2071 | spin_lock_irqsave(&adapter->scan_pending_q_lock, scan_flags); | |
2072 | if (list_empty(&adapter->scan_pending_q)) { | |
2073 | complete_scan = true; | |
2074 | list_for_each_entry(cmd_node, &adapter->cmd_pending_q, list) { | |
2075 | cmd_ptr = (void *)cmd_node->cmd_skb->data; | |
2076 | if (le16_to_cpu(cmd_ptr->command) == | |
2077 | HostCmd_CMD_802_11_SCAN_EXT) { | |
2078 | dev_dbg(priv->adapter->dev, | |
2079 | "Scan pending in command pending list"); | |
2080 | complete_scan = false; | |
2081 | break; | |
2082 | } | |
2083 | } | |
2084 | } | |
2085 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, scan_flags); | |
2086 | spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, cmd_flags); | |
2087 | ||
2088 | if (complete_scan) | |
2089 | mwifiex_complete_scan(priv); | |
21445049 | 2090 | |
21f58d20 AK |
2091 | return 0; |
2092 | } | |
2093 | ||
2094 | /* This function This function handles the event extended scan report. It | |
2095 | * parses extended scan results and informs to cfg80211 stack. | |
2096 | */ | |
2097 | int mwifiex_handle_event_ext_scan_report(struct mwifiex_private *priv, | |
2098 | void *buf) | |
2099 | { | |
2100 | int ret = 0; | |
2101 | struct mwifiex_adapter *adapter = priv->adapter; | |
2102 | u8 *bss_info; | |
2103 | u32 bytes_left, bytes_left_for_tlv, idx; | |
2104 | u16 type, len; | |
2105 | struct mwifiex_ie_types_data *tlv; | |
2106 | struct mwifiex_ie_types_bss_scan_rsp *scan_rsp_tlv; | |
2107 | struct mwifiex_ie_types_bss_scan_info *scan_info_tlv; | |
2108 | u8 *radio_type; | |
2109 | u64 fw_tsf = 0; | |
2110 | s32 rssi = 0; | |
2111 | struct mwifiex_event_scan_result *event_scan = buf; | |
2112 | u8 num_of_set = event_scan->num_of_set; | |
2113 | u8 *scan_resp = buf + sizeof(struct mwifiex_event_scan_result); | |
2114 | u16 scan_resp_size = le16_to_cpu(event_scan->buf_size); | |
2115 | ||
2116 | if (num_of_set > MWIFIEX_MAX_AP) { | |
2117 | dev_err(adapter->dev, | |
2118 | "EXT_SCAN: Invalid number of AP returned (%d)!!\n", | |
2119 | num_of_set); | |
2120 | ret = -1; | |
2121 | goto check_next_scan; | |
2122 | } | |
2123 | ||
2124 | bytes_left = scan_resp_size; | |
2125 | dev_dbg(adapter->dev, | |
2126 | "EXT_SCAN: size %d, returned %d APs...", | |
2127 | scan_resp_size, num_of_set); | |
2128 | ||
2129 | tlv = (struct mwifiex_ie_types_data *)scan_resp; | |
2130 | ||
2131 | for (idx = 0; idx < num_of_set && bytes_left; idx++) { | |
2132 | type = le16_to_cpu(tlv->header.type); | |
2133 | len = le16_to_cpu(tlv->header.len); | |
2134 | if (bytes_left < sizeof(struct mwifiex_ie_types_header) + len) { | |
2135 | dev_err(adapter->dev, "EXT_SCAN: Error bytes left < TLV length\n"); | |
2136 | break; | |
2137 | } | |
2138 | scan_rsp_tlv = NULL; | |
2139 | scan_info_tlv = NULL; | |
2140 | bytes_left_for_tlv = bytes_left; | |
2141 | ||
2142 | /* BSS response TLV with beacon or probe response buffer | |
2143 | * at the initial position of each descriptor | |
2144 | */ | |
2145 | if (type != TLV_TYPE_BSS_SCAN_RSP) | |
2146 | break; | |
2147 | ||
2148 | bss_info = (u8 *)tlv; | |
2149 | scan_rsp_tlv = (struct mwifiex_ie_types_bss_scan_rsp *)tlv; | |
2150 | tlv = (struct mwifiex_ie_types_data *)(tlv->data + len); | |
2151 | bytes_left_for_tlv -= | |
2152 | (len + sizeof(struct mwifiex_ie_types_header)); | |
2153 | ||
2154 | while (bytes_left_for_tlv >= | |
2155 | sizeof(struct mwifiex_ie_types_header) && | |
2156 | le16_to_cpu(tlv->header.type) != TLV_TYPE_BSS_SCAN_RSP) { | |
2157 | type = le16_to_cpu(tlv->header.type); | |
2158 | len = le16_to_cpu(tlv->header.len); | |
2159 | if (bytes_left_for_tlv < | |
2160 | sizeof(struct mwifiex_ie_types_header) + len) { | |
2161 | dev_err(adapter->dev, | |
2162 | "EXT_SCAN: Error in processing TLV, bytes left < TLV length\n"); | |
2163 | scan_rsp_tlv = NULL; | |
2164 | bytes_left_for_tlv = 0; | |
2165 | continue; | |
2166 | } | |
2167 | switch (type) { | |
2168 | case TLV_TYPE_BSS_SCAN_INFO: | |
2169 | scan_info_tlv = | |
2170 | (struct mwifiex_ie_types_bss_scan_info *)tlv; | |
2171 | if (len != | |
2172 | sizeof(struct mwifiex_ie_types_bss_scan_info) - | |
2173 | sizeof(struct mwifiex_ie_types_header)) { | |
2174 | bytes_left_for_tlv = 0; | |
2175 | continue; | |
2176 | } | |
2177 | break; | |
2178 | default: | |
2179 | break; | |
2180 | } | |
2181 | tlv = (struct mwifiex_ie_types_data *)(tlv->data + len); | |
2182 | bytes_left -= | |
2183 | (len + sizeof(struct mwifiex_ie_types_header)); | |
2184 | bytes_left_for_tlv -= | |
2185 | (len + sizeof(struct mwifiex_ie_types_header)); | |
2186 | } | |
2187 | ||
2188 | if (!scan_rsp_tlv) | |
2189 | break; | |
2190 | ||
2191 | /* Advance pointer to the beacon buffer length and | |
2192 | * update the bytes count so that the function | |
2193 | * wlan_interpret_bss_desc_with_ie() can handle the | |
2194 | * scan buffer withut any change | |
2195 | */ | |
2196 | bss_info += sizeof(u16); | |
2197 | bytes_left -= sizeof(u16); | |
2198 | ||
2199 | if (scan_info_tlv) { | |
2200 | rssi = (s32)(s16)(le16_to_cpu(scan_info_tlv->rssi)); | |
2201 | rssi *= 100; /* Convert dBm to mBm */ | |
2202 | dev_dbg(adapter->dev, | |
2203 | "info: InterpretIE: RSSI=%d\n", rssi); | |
2204 | fw_tsf = le64_to_cpu(scan_info_tlv->tsf); | |
2205 | radio_type = &scan_info_tlv->radio_type; | |
2206 | } else { | |
2207 | radio_type = NULL; | |
2208 | } | |
2209 | ret = mwifiex_parse_single_response_buf(priv, &bss_info, | |
2210 | &bytes_left, fw_tsf, | |
2211 | radio_type, true, rssi); | |
2212 | if (ret) | |
2213 | goto check_next_scan; | |
2214 | } | |
2215 | ||
2216 | check_next_scan: | |
2217 | if (!event_scan->more_event) | |
2218 | mwifiex_check_next_scan_command(priv); | |
2219 | ||
2220 | return ret; | |
2221 | } | |
2222 | ||
5e6e3a92 BZ |
2223 | /* |
2224 | * This function prepares command for background scan query. | |
2225 | * | |
2226 | * Preparation includes - | |
2227 | * - Setting command ID and proper size | |
2228 | * - Setting background scan flush parameter | |
2229 | * - Ensuring correct endian-ness | |
2230 | */ | |
572e8f3e | 2231 | int mwifiex_cmd_802_11_bg_scan_query(struct host_cmd_ds_command *cmd) |
5e6e3a92 BZ |
2232 | { |
2233 | struct host_cmd_ds_802_11_bg_scan_query *bg_query = | |
2234 | &cmd->params.bg_scan_query; | |
2235 | ||
2236 | cmd->command = cpu_to_le16(HostCmd_CMD_802_11_BG_SCAN_QUERY); | |
2237 | cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_bg_scan_query) | |
2238 | + S_DS_GEN); | |
2239 | ||
2240 | bg_query->flush = 1; | |
2241 | ||
2242 | return 0; | |
2243 | } | |
2244 | ||
5e6e3a92 BZ |
2245 | /* |
2246 | * This function inserts scan command node to the scan pending queue. | |
2247 | */ | |
2248 | void | |
2249 | mwifiex_queue_scan_cmd(struct mwifiex_private *priv, | |
2250 | struct cmd_ctrl_node *cmd_node) | |
2251 | { | |
2252 | struct mwifiex_adapter *adapter = priv->adapter; | |
2253 | unsigned long flags; | |
2254 | ||
600f5d90 | 2255 | cmd_node->wait_q_enabled = true; |
efaaa8b8 | 2256 | cmd_node->condition = &adapter->scan_wait_q_woken; |
5e6e3a92 BZ |
2257 | spin_lock_irqsave(&adapter->scan_pending_q_lock, flags); |
2258 | list_add_tail(&cmd_node->list, &adapter->scan_pending_q); | |
2259 | spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); | |
2260 | } | |
2261 | ||
5e6e3a92 BZ |
2262 | /* |
2263 | * This function sends a scan command for all available channels to the | |
2264 | * firmware, filtered on a specific SSID. | |
2265 | */ | |
2266 | static int mwifiex_scan_specific_ssid(struct mwifiex_private *priv, | |
b9be5f39 | 2267 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 BZ |
2268 | { |
2269 | struct mwifiex_adapter *adapter = priv->adapter; | |
dcd5c79c | 2270 | int ret; |
5e6e3a92 BZ |
2271 | struct mwifiex_user_scan_cfg *scan_cfg; |
2272 | ||
600f5d90 | 2273 | if (adapter->scan_processing) { |
dcd5c79c BZ |
2274 | dev_err(adapter->dev, "cmd: Scan already in process...\n"); |
2275 | return -EBUSY; | |
5e6e3a92 BZ |
2276 | } |
2277 | ||
600f5d90 | 2278 | if (priv->scan_block) { |
dcd5c79c | 2279 | dev_err(adapter->dev, |
5e6e3a92 | 2280 | "cmd: Scan is blocked during association...\n"); |
dcd5c79c | 2281 | return -EBUSY; |
5e6e3a92 BZ |
2282 | } |
2283 | ||
5e6e3a92 | 2284 | scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg), GFP_KERNEL); |
0d2e7a5c | 2285 | if (!scan_cfg) |
b53575ec | 2286 | return -ENOMEM; |
5e6e3a92 | 2287 | |
be0b281e AK |
2288 | scan_cfg->ssid_list = req_ssid; |
2289 | scan_cfg->num_ssids = 1; | |
5e6e3a92 | 2290 | |
600f5d90 | 2291 | ret = mwifiex_scan_networks(priv, scan_cfg); |
5e6e3a92 BZ |
2292 | |
2293 | kfree(scan_cfg); | |
2294 | return ret; | |
2295 | } | |
2296 | ||
2297 | /* | |
2298 | * Sends IOCTL request to start a scan. | |
2299 | * | |
2300 | * This function allocates the IOCTL request buffer, fills it | |
2301 | * with requisite parameters and calls the IOCTL handler. | |
2302 | * | |
2303 | * Scan command can be issued for both normal scan and specific SSID | |
2304 | * scan, depending upon whether an SSID is provided or not. | |
2305 | */ | |
600f5d90 | 2306 | int mwifiex_request_scan(struct mwifiex_private *priv, |
b9be5f39 | 2307 | struct cfg80211_ssid *req_ssid) |
5e6e3a92 | 2308 | { |
270e58e8 | 2309 | int ret; |
5e6e3a92 BZ |
2310 | |
2311 | if (down_interruptible(&priv->async_sem)) { | |
2312 | dev_err(priv->adapter->dev, "%s: acquire semaphore\n", | |
cff23cec | 2313 | __func__); |
5e6e3a92 BZ |
2314 | return -1; |
2315 | } | |
5e6e3a92 | 2316 | |
efaaa8b8 | 2317 | priv->adapter->scan_wait_q_woken = false; |
5e6e3a92 BZ |
2318 | |
2319 | if (req_ssid && req_ssid->ssid_len != 0) | |
2320 | /* Specific SSID scan */ | |
600f5d90 | 2321 | ret = mwifiex_scan_specific_ssid(priv, req_ssid); |
5e6e3a92 BZ |
2322 | else |
2323 | /* Normal scan */ | |
600f5d90 AK |
2324 | ret = mwifiex_scan_networks(priv, NULL); |
2325 | ||
b0e70c2f | 2326 | up(&priv->async_sem); |
600f5d90 | 2327 | |
5e6e3a92 BZ |
2328 | return ret; |
2329 | } | |
2330 | ||
2331 | /* | |
2332 | * This function appends the vendor specific IE TLV to a buffer. | |
2333 | */ | |
2334 | int | |
2335 | mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv, | |
2336 | u16 vsie_mask, u8 **buffer) | |
2337 | { | |
2338 | int id, ret_len = 0; | |
2339 | struct mwifiex_ie_types_vendor_param_set *vs_param_set; | |
2340 | ||
2341 | if (!buffer) | |
2342 | return 0; | |
2343 | if (!(*buffer)) | |
2344 | return 0; | |
2345 | ||
2346 | /* | |
2347 | * Traverse through the saved vendor specific IE array and append | |
2348 | * the selected(scan/assoc/adhoc) IE as TLV to the command | |
2349 | */ | |
2350 | for (id = 0; id < MWIFIEX_MAX_VSIE_NUM; id++) { | |
2351 | if (priv->vs_ie[id].mask & vsie_mask) { | |
2352 | vs_param_set = | |
2353 | (struct mwifiex_ie_types_vendor_param_set *) | |
2354 | *buffer; | |
2355 | vs_param_set->header.type = | |
2356 | cpu_to_le16(TLV_TYPE_PASSTHROUGH); | |
2357 | vs_param_set->header.len = | |
2358 | cpu_to_le16((((u16) priv->vs_ie[id].ie[1]) | |
2359 | & 0x00FF) + 2); | |
2360 | memcpy(vs_param_set->ie, priv->vs_ie[id].ie, | |
2361 | le16_to_cpu(vs_param_set->header.len)); | |
2362 | *buffer += le16_to_cpu(vs_param_set->header.len) + | |
2363 | sizeof(struct mwifiex_ie_types_header); | |
2364 | ret_len += le16_to_cpu(vs_param_set->header.len) + | |
2365 | sizeof(struct mwifiex_ie_types_header); | |
2366 | } | |
2367 | } | |
2368 | return ret_len; | |
2369 | } | |
2370 | ||
2371 | /* | |
2372 | * This function saves a beacon buffer of the current BSS descriptor. | |
2373 | * | |
2374 | * The current beacon buffer is saved so that it can be restored in the | |
2375 | * following cases that makes the beacon buffer not to contain the current | |
2376 | * ssid's beacon buffer. | |
2377 | * - The current ssid was not found somehow in the last scan. | |
2378 | * - The current ssid was the last entry of the scan table and overloaded. | |
2379 | */ | |
2380 | void | |
2381 | mwifiex_save_curr_bcn(struct mwifiex_private *priv) | |
2382 | { | |
2383 | struct mwifiex_bssdescriptor *curr_bss = | |
2384 | &priv->curr_bss_params.bss_descriptor; | |
2385 | ||
030fe797 AK |
2386 | if (!curr_bss->beacon_buf_size) |
2387 | return; | |
5e6e3a92 | 2388 | |
030fe797 AK |
2389 | /* allocate beacon buffer at 1st time; or if it's size has changed */ |
2390 | if (!priv->curr_bcn_buf || | |
cff23cec | 2391 | priv->curr_bcn_size != curr_bss->beacon_buf_size) { |
5e6e3a92 | 2392 | priv->curr_bcn_size = curr_bss->beacon_buf_size; |
5e6e3a92 | 2393 | |
030fe797 | 2394 | kfree(priv->curr_bcn_buf); |
5982b47a | 2395 | priv->curr_bcn_buf = kmalloc(curr_bss->beacon_buf_size, |
cff23cec | 2396 | GFP_ATOMIC); |
0d2e7a5c | 2397 | if (!priv->curr_bcn_buf) |
030fe797 | 2398 | return; |
5e6e3a92 | 2399 | } |
030fe797 AK |
2400 | |
2401 | memcpy(priv->curr_bcn_buf, curr_bss->beacon_buf, | |
cff23cec | 2402 | curr_bss->beacon_buf_size); |
030fe797 AK |
2403 | dev_dbg(priv->adapter->dev, "info: current beacon saved %d\n", |
2404 | priv->curr_bcn_size); | |
7c6fa2a8 AK |
2405 | |
2406 | curr_bss->beacon_buf = priv->curr_bcn_buf; | |
2407 | ||
2408 | /* adjust the pointers in the current BSS descriptor */ | |
2409 | if (curr_bss->bcn_wpa_ie) | |
2410 | curr_bss->bcn_wpa_ie = | |
2411 | (struct ieee_types_vendor_specific *) | |
2412 | (curr_bss->beacon_buf + | |
2413 | curr_bss->wpa_offset); | |
2414 | ||
2415 | if (curr_bss->bcn_rsn_ie) | |
2416 | curr_bss->bcn_rsn_ie = (struct ieee_types_generic *) | |
2417 | (curr_bss->beacon_buf + | |
2418 | curr_bss->rsn_offset); | |
2419 | ||
2420 | if (curr_bss->bcn_ht_cap) | |
2421 | curr_bss->bcn_ht_cap = (struct ieee80211_ht_cap *) | |
2422 | (curr_bss->beacon_buf + | |
2423 | curr_bss->ht_cap_offset); | |
2424 | ||
074d46d1 JB |
2425 | if (curr_bss->bcn_ht_oper) |
2426 | curr_bss->bcn_ht_oper = (struct ieee80211_ht_operation *) | |
7c6fa2a8 AK |
2427 | (curr_bss->beacon_buf + |
2428 | curr_bss->ht_info_offset); | |
2429 | ||
a5f39056 | 2430 | if (curr_bss->bcn_vht_cap) |
d5124648 AK |
2431 | curr_bss->bcn_vht_cap = (void *)(curr_bss->beacon_buf + |
2432 | curr_bss->vht_cap_offset); | |
a5f39056 YAP |
2433 | |
2434 | if (curr_bss->bcn_vht_oper) | |
d5124648 AK |
2435 | curr_bss->bcn_vht_oper = (void *)(curr_bss->beacon_buf + |
2436 | curr_bss->vht_info_offset); | |
a5f39056 | 2437 | |
7c6fa2a8 AK |
2438 | if (curr_bss->bcn_bss_co_2040) |
2439 | curr_bss->bcn_bss_co_2040 = | |
2c208890 | 2440 | (curr_bss->beacon_buf + curr_bss->bss_co_2040_offset); |
7c6fa2a8 AK |
2441 | |
2442 | if (curr_bss->bcn_ext_cap) | |
2c208890 JP |
2443 | curr_bss->bcn_ext_cap = curr_bss->beacon_buf + |
2444 | curr_bss->ext_cap_offset; | |
a5f39056 YAP |
2445 | |
2446 | if (curr_bss->oper_mode) | |
2447 | curr_bss->oper_mode = (void *)(curr_bss->beacon_buf + | |
2448 | curr_bss->oper_mode_offset); | |
5e6e3a92 BZ |
2449 | } |
2450 | ||
2451 | /* | |
2452 | * This function frees the current BSS descriptor beacon buffer. | |
2453 | */ | |
2454 | void | |
2455 | mwifiex_free_curr_bcn(struct mwifiex_private *priv) | |
2456 | { | |
2457 | kfree(priv->curr_bcn_buf); | |
2458 | priv->curr_bcn_buf = NULL; | |
2459 | } |