Commit | Line | Data |
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ede98bfa AP |
1 | /* |
2 | * Marvell Wireless LAN device driver: management IE handling- setting and | |
3 | * deleting IE. | |
4 | * | |
5 | * Copyright (C) 2012, Marvell International Ltd. | |
6 | * | |
7 | * This software file (the "File") is distributed by Marvell International | |
8 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 | |
9 | * (the "License"). You may use, redistribute and/or modify this File in | |
10 | * accordance with the terms and conditions of the License, a copy of which | |
11 | * is available by writing to the Free Software Foundation, Inc., | |
12 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the | |
13 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. | |
14 | * | |
15 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE | |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE | |
17 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about | |
18 | * this warranty disclaimer. | |
19 | */ | |
20 | ||
21 | #include "main.h" | |
22 | ||
23 | /* This function checks if current IE index is used by any on other interface. | |
24 | * Return: -1: yes, current IE index is used by someone else. | |
25 | * 0: no, current IE index is NOT used by other interface. | |
26 | */ | |
27 | static int | |
28 | mwifiex_ie_index_used_by_other_intf(struct mwifiex_private *priv, u16 idx) | |
29 | { | |
30 | int i; | |
31 | struct mwifiex_adapter *adapter = priv->adapter; | |
32 | struct mwifiex_ie *ie; | |
33 | ||
34 | for (i = 0; i < adapter->priv_num; i++) { | |
35 | if (adapter->priv[i] != priv) { | |
36 | ie = &adapter->priv[i]->mgmt_ie[idx]; | |
37 | if (ie->mgmt_subtype_mask && ie->ie_length) | |
38 | return -1; | |
39 | } | |
40 | } | |
41 | ||
42 | return 0; | |
43 | } | |
44 | ||
45 | /* Get unused IE index. This index will be used for setting new IE */ | |
46 | static int | |
47 | mwifiex_ie_get_autoidx(struct mwifiex_private *priv, u16 subtype_mask, | |
48 | struct mwifiex_ie *ie, u16 *index) | |
49 | { | |
50 | u16 mask, len, i; | |
51 | ||
52 | for (i = 0; i < priv->adapter->max_mgmt_ie_index; i++) { | |
53 | mask = le16_to_cpu(priv->mgmt_ie[i].mgmt_subtype_mask); | |
bd6aa030 | 54 | len = le16_to_cpu(ie->ie_length); |
ede98bfa AP |
55 | |
56 | if (mask == MWIFIEX_AUTO_IDX_MASK) | |
57 | continue; | |
58 | ||
59 | if (mask == subtype_mask) { | |
60 | if (len > IEEE_MAX_IE_SIZE) | |
61 | continue; | |
62 | ||
63 | *index = i; | |
64 | return 0; | |
65 | } | |
66 | ||
67 | if (!priv->mgmt_ie[i].ie_length) { | |
68 | if (mwifiex_ie_index_used_by_other_intf(priv, i)) | |
69 | continue; | |
70 | ||
71 | *index = i; | |
72 | return 0; | |
73 | } | |
74 | } | |
75 | ||
76 | return -1; | |
77 | } | |
78 | ||
79 | /* This function prepares IE data buffer for command to be sent to FW */ | |
80 | static int | |
81 | mwifiex_update_autoindex_ies(struct mwifiex_private *priv, | |
82 | struct mwifiex_ie_list *ie_list) | |
83 | { | |
84 | u16 travel_len, index, mask; | |
85 | s16 input_len; | |
86 | struct mwifiex_ie *ie; | |
87 | u8 *tmp; | |
88 | ||
89 | input_len = le16_to_cpu(ie_list->len); | |
90 | travel_len = sizeof(struct host_cmd_tlv); | |
91 | ||
92 | ie_list->len = 0; | |
93 | ||
94 | while (input_len > 0) { | |
95 | ie = (struct mwifiex_ie *)(((u8 *)ie_list) + travel_len); | |
96 | input_len -= le16_to_cpu(ie->ie_length) + MWIFIEX_IE_HDR_SIZE; | |
97 | travel_len += le16_to_cpu(ie->ie_length) + MWIFIEX_IE_HDR_SIZE; | |
98 | ||
99 | index = le16_to_cpu(ie->ie_index); | |
100 | mask = le16_to_cpu(ie->mgmt_subtype_mask); | |
101 | ||
102 | if (index == MWIFIEX_AUTO_IDX_MASK) { | |
103 | /* automatic addition */ | |
104 | if (mwifiex_ie_get_autoidx(priv, mask, ie, &index)) | |
105 | return -1; | |
106 | if (index == MWIFIEX_AUTO_IDX_MASK) | |
107 | return -1; | |
108 | ||
109 | tmp = (u8 *)&priv->mgmt_ie[index].ie_buffer; | |
ede98bfa | 110 | memcpy(tmp, &ie->ie_buffer, le16_to_cpu(ie->ie_length)); |
bd6aa030 | 111 | priv->mgmt_ie[index].ie_length = ie->ie_length; |
ede98bfa AP |
112 | priv->mgmt_ie[index].ie_index = cpu_to_le16(index); |
113 | priv->mgmt_ie[index].mgmt_subtype_mask = | |
114 | cpu_to_le16(mask); | |
115 | ||
116 | ie->ie_index = cpu_to_le16(index); | |
117 | ie->ie_length = priv->mgmt_ie[index].ie_length; | |
118 | memcpy(&ie->ie_buffer, &priv->mgmt_ie[index].ie_buffer, | |
119 | le16_to_cpu(priv->mgmt_ie[index].ie_length)); | |
120 | } else { | |
121 | if (mask != MWIFIEX_DELETE_MASK) | |
122 | return -1; | |
123 | /* | |
124 | * Check if this index is being used on any | |
125 | * other interface. | |
126 | */ | |
127 | if (mwifiex_ie_index_used_by_other_intf(priv, index)) | |
128 | return -1; | |
129 | ||
130 | ie->ie_length = 0; | |
131 | memcpy(&priv->mgmt_ie[index], ie, | |
132 | sizeof(struct mwifiex_ie)); | |
133 | } | |
134 | ||
135 | le16_add_cpu(&ie_list->len, | |
136 | le16_to_cpu(priv->mgmt_ie[index].ie_length) + | |
137 | MWIFIEX_IE_HDR_SIZE); | |
138 | } | |
139 | ||
140 | if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) | |
141 | return mwifiex_send_cmd_async(priv, HostCmd_CMD_UAP_SYS_CONFIG, | |
142 | HostCmd_ACT_GEN_SET, | |
143 | UAP_CUSTOM_IE_I, ie_list); | |
144 | ||
145 | return 0; | |
146 | } | |
f31acabe AP |
147 | |
148 | /* Copy individual custom IEs for beacon, probe response and assoc response | |
149 | * and prepare single structure for IE setting. | |
150 | * This function also updates allocated IE indices from driver. | |
151 | */ | |
152 | static int | |
153 | mwifiex_update_uap_custom_ie(struct mwifiex_private *priv, | |
154 | struct mwifiex_ie *beacon_ie, u16 *beacon_idx, | |
155 | struct mwifiex_ie *pr_ie, u16 *probe_idx, | |
156 | struct mwifiex_ie *ar_ie, u16 *assoc_idx) | |
157 | { | |
158 | struct mwifiex_ie_list *ap_custom_ie; | |
159 | u8 *pos; | |
160 | u16 len; | |
161 | int ret; | |
162 | ||
163 | ap_custom_ie = kzalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); | |
164 | if (!ap_custom_ie) | |
165 | return -ENOMEM; | |
166 | ||
167 | ap_custom_ie->type = cpu_to_le16(TLV_TYPE_MGMT_IE); | |
168 | pos = (u8 *)ap_custom_ie->ie_list; | |
169 | ||
170 | if (beacon_ie) { | |
171 | len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE + | |
172 | le16_to_cpu(beacon_ie->ie_length); | |
173 | memcpy(pos, beacon_ie, len); | |
174 | pos += len; | |
175 | le16_add_cpu(&ap_custom_ie->len, len); | |
176 | } | |
177 | if (pr_ie) { | |
178 | len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE + | |
179 | le16_to_cpu(pr_ie->ie_length); | |
180 | memcpy(pos, pr_ie, len); | |
181 | pos += len; | |
182 | le16_add_cpu(&ap_custom_ie->len, len); | |
183 | } | |
184 | if (ar_ie) { | |
185 | len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE + | |
186 | le16_to_cpu(ar_ie->ie_length); | |
187 | memcpy(pos, ar_ie, len); | |
188 | pos += len; | |
189 | le16_add_cpu(&ap_custom_ie->len, len); | |
190 | } | |
191 | ||
192 | ret = mwifiex_update_autoindex_ies(priv, ap_custom_ie); | |
193 | ||
194 | pos = (u8 *)(&ap_custom_ie->ie_list[0].ie_index); | |
195 | if (beacon_ie && *beacon_idx == MWIFIEX_AUTO_IDX_MASK) { | |
196 | /* save beacon ie index after auto-indexing */ | |
197 | *beacon_idx = le16_to_cpu(ap_custom_ie->ie_list[0].ie_index); | |
198 | len = sizeof(*beacon_ie) - IEEE_MAX_IE_SIZE + | |
199 | le16_to_cpu(beacon_ie->ie_length); | |
200 | pos += len; | |
201 | } | |
202 | if (pr_ie && le16_to_cpu(pr_ie->ie_index) == MWIFIEX_AUTO_IDX_MASK) { | |
203 | /* save probe resp ie index after auto-indexing */ | |
204 | *probe_idx = *((u16 *)pos); | |
205 | len = sizeof(*pr_ie) - IEEE_MAX_IE_SIZE + | |
206 | le16_to_cpu(pr_ie->ie_length); | |
207 | pos += len; | |
208 | } | |
209 | if (ar_ie && le16_to_cpu(ar_ie->ie_index) == MWIFIEX_AUTO_IDX_MASK) | |
210 | /* save assoc resp ie index after auto-indexing */ | |
211 | *assoc_idx = *((u16 *)pos); | |
212 | ||
c9015b24 | 213 | kfree(ap_custom_ie); |
f31acabe AP |
214 | return ret; |
215 | } | |
216 | ||
2152fe9c AP |
217 | /* This function checks if WPS IE is present in passed buffer and copies it to |
218 | * mwifiex_ie structure. | |
219 | * Function takes pointer to struct mwifiex_ie pointer as argument. | |
220 | * If WPS IE is present memory is allocated for mwifiex_ie pointer and filled | |
221 | * in with WPS IE. Caller should take care of freeing this memory. | |
222 | */ | |
223 | static int mwifiex_update_wps_ie(const u8 *ies, int ies_len, | |
224 | struct mwifiex_ie **ie_ptr, u16 mask) | |
225 | { | |
226 | struct ieee_types_header *wps_ie; | |
227 | struct mwifiex_ie *ie = NULL; | |
228 | const u8 *vendor_ie; | |
229 | ||
230 | vendor_ie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT, | |
231 | WLAN_OUI_TYPE_MICROSOFT_WPS, | |
232 | ies, ies_len); | |
233 | if (vendor_ie) { | |
234 | ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); | |
235 | if (!ie) | |
236 | return -ENOMEM; | |
237 | ||
238 | wps_ie = (struct ieee_types_header *)vendor_ie; | |
239 | memcpy(ie->ie_buffer, wps_ie, wps_ie->len + 2); | |
240 | ie->ie_length = cpu_to_le16(wps_ie->len + 2); | |
241 | ie->mgmt_subtype_mask = cpu_to_le16(mask); | |
242 | ie->ie_index = cpu_to_le16(MWIFIEX_AUTO_IDX_MASK); | |
243 | } | |
244 | ||
245 | *ie_ptr = ie; | |
246 | return 0; | |
247 | } | |
248 | ||
ea4c12f0 AP |
249 | /* This function parses beacon IEs, probe response IEs, association response IEs |
250 | * from cfg80211_ap_settings->beacon and sets these IE to FW. | |
f31acabe | 251 | */ |
ea4c12f0 AP |
252 | static int mwifiex_set_mgmt_beacon_data_ies(struct mwifiex_private *priv, |
253 | struct cfg80211_beacon_data *data) | |
f31acabe | 254 | { |
ea4c12f0 | 255 | struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL, *ar_ie = NULL; |
f31acabe | 256 | u16 beacon_idx = MWIFIEX_AUTO_IDX_MASK, pr_idx = MWIFIEX_AUTO_IDX_MASK; |
ea4c12f0 | 257 | u16 ar_idx = MWIFIEX_AUTO_IDX_MASK; |
f31acabe AP |
258 | int ret = 0; |
259 | ||
2152fe9c AP |
260 | if (data->beacon_ies && data->beacon_ies_len) |
261 | mwifiex_update_wps_ie(data->beacon_ies, data->beacon_ies_len, | |
262 | &beacon_ie, MGMT_MASK_BEACON); | |
f31acabe | 263 | |
2152fe9c AP |
264 | if (data->proberesp_ies && data->proberesp_ies_len) |
265 | mwifiex_update_wps_ie(data->proberesp_ies, | |
266 | data->proberesp_ies_len, &pr_ie, | |
267 | MGMT_MASK_PROBE_RESP); | |
f31acabe | 268 | |
2152fe9c AP |
269 | if (data->assocresp_ies && data->assocresp_ies_len) |
270 | mwifiex_update_wps_ie(data->assocresp_ies, | |
271 | data->assocresp_ies_len, &ar_ie, | |
272 | MGMT_MASK_ASSOC_RESP | | |
273 | MGMT_MASK_REASSOC_RESP); | |
f31acabe AP |
274 | |
275 | if (beacon_ie || pr_ie || ar_ie) { | |
276 | ret = mwifiex_update_uap_custom_ie(priv, beacon_ie, | |
277 | &beacon_idx, pr_ie, | |
278 | &pr_idx, ar_ie, &ar_idx); | |
279 | if (ret) | |
280 | goto done; | |
281 | } | |
282 | ||
283 | priv->beacon_idx = beacon_idx; | |
284 | priv->proberesp_idx = pr_idx; | |
285 | priv->assocresp_idx = ar_idx; | |
286 | ||
287 | done: | |
288 | kfree(beacon_ie); | |
289 | kfree(pr_ie); | |
290 | kfree(ar_ie); | |
f31acabe AP |
291 | |
292 | return ret; | |
293 | } | |
40bbc21a | 294 | |
ea4c12f0 AP |
295 | /* This function parses different IEs-tail IEs, beacon IEs, probe response IEs, |
296 | * association response IEs from cfg80211_ap_settings function and sets these IE | |
297 | * to FW. | |
298 | */ | |
299 | int mwifiex_set_mgmt_ies(struct mwifiex_private *priv, | |
300 | struct cfg80211_beacon_data *info) | |
301 | { | |
302 | struct mwifiex_ie *gen_ie; | |
303 | struct ieee_types_header *rsn_ie, *wpa_ie = NULL; | |
304 | u16 rsn_idx = MWIFIEX_AUTO_IDX_MASK, ie_len = 0; | |
305 | const u8 *vendor_ie; | |
306 | ||
307 | if (info->tail && info->tail_len) { | |
308 | gen_ie = kzalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); | |
309 | if (!gen_ie) | |
310 | return -ENOMEM; | |
311 | gen_ie->ie_index = cpu_to_le16(rsn_idx); | |
312 | gen_ie->mgmt_subtype_mask = cpu_to_le16(MGMT_MASK_BEACON | | |
313 | MGMT_MASK_PROBE_RESP | | |
314 | MGMT_MASK_ASSOC_RESP); | |
315 | ||
316 | rsn_ie = (void *)cfg80211_find_ie(WLAN_EID_RSN, | |
317 | info->tail, info->tail_len); | |
318 | if (rsn_ie) { | |
319 | memcpy(gen_ie->ie_buffer, rsn_ie, rsn_ie->len + 2); | |
320 | ie_len = rsn_ie->len + 2; | |
321 | gen_ie->ie_length = cpu_to_le16(ie_len); | |
322 | } | |
323 | ||
324 | vendor_ie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT, | |
325 | WLAN_OUI_TYPE_MICROSOFT_WPA, | |
326 | info->tail, | |
327 | info->tail_len); | |
328 | if (vendor_ie) { | |
329 | wpa_ie = (struct ieee_types_header *)vendor_ie; | |
330 | memcpy(gen_ie->ie_buffer + ie_len, | |
331 | wpa_ie, wpa_ie->len + 2); | |
332 | ie_len += wpa_ie->len + 2; | |
333 | gen_ie->ie_length = cpu_to_le16(ie_len); | |
334 | } | |
335 | ||
336 | if (rsn_ie || wpa_ie) { | |
337 | if (mwifiex_update_uap_custom_ie(priv, gen_ie, &rsn_idx, | |
338 | NULL, NULL, | |
339 | NULL, NULL)) { | |
340 | kfree(gen_ie); | |
341 | return -1; | |
342 | } | |
343 | priv->rsn_idx = rsn_idx; | |
344 | } | |
345 | ||
346 | kfree(gen_ie); | |
347 | } | |
348 | ||
349 | return mwifiex_set_mgmt_beacon_data_ies(priv, info); | |
350 | } | |
351 | ||
40bbc21a AP |
352 | /* This function removes management IE set */ |
353 | int mwifiex_del_mgmt_ies(struct mwifiex_private *priv) | |
354 | { | |
355 | struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL; | |
356 | struct mwifiex_ie *ar_ie = NULL, *rsn_ie = NULL; | |
357 | int ret = 0; | |
358 | ||
359 | if (priv->rsn_idx != MWIFIEX_AUTO_IDX_MASK) { | |
360 | rsn_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); | |
361 | if (!rsn_ie) | |
362 | return -ENOMEM; | |
363 | ||
364 | rsn_ie->ie_index = cpu_to_le16(priv->rsn_idx); | |
365 | rsn_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK); | |
366 | rsn_ie->ie_length = 0; | |
367 | if (mwifiex_update_uap_custom_ie(priv, rsn_ie, &priv->rsn_idx, | |
368 | NULL, &priv->proberesp_idx, | |
369 | NULL, &priv->assocresp_idx)) { | |
370 | ret = -1; | |
371 | goto done; | |
372 | } | |
373 | ||
374 | priv->rsn_idx = MWIFIEX_AUTO_IDX_MASK; | |
375 | } | |
376 | ||
377 | if (priv->beacon_idx != MWIFIEX_AUTO_IDX_MASK) { | |
378 | beacon_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); | |
379 | if (!beacon_ie) { | |
380 | ret = -ENOMEM; | |
381 | goto done; | |
382 | } | |
383 | beacon_ie->ie_index = cpu_to_le16(priv->beacon_idx); | |
384 | beacon_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK); | |
385 | beacon_ie->ie_length = 0; | |
386 | } | |
387 | if (priv->proberesp_idx != MWIFIEX_AUTO_IDX_MASK) { | |
388 | pr_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); | |
389 | if (!pr_ie) { | |
390 | ret = -ENOMEM; | |
391 | goto done; | |
392 | } | |
393 | pr_ie->ie_index = cpu_to_le16(priv->proberesp_idx); | |
394 | pr_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK); | |
395 | pr_ie->ie_length = 0; | |
396 | } | |
397 | if (priv->assocresp_idx != MWIFIEX_AUTO_IDX_MASK) { | |
398 | ar_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); | |
399 | if (!ar_ie) { | |
400 | ret = -ENOMEM; | |
401 | goto done; | |
402 | } | |
403 | ar_ie->ie_index = cpu_to_le16(priv->assocresp_idx); | |
404 | ar_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK); | |
405 | ar_ie->ie_length = 0; | |
406 | } | |
407 | ||
408 | if (beacon_ie || pr_ie || ar_ie) | |
409 | ret = mwifiex_update_uap_custom_ie(priv, | |
410 | beacon_ie, &priv->beacon_idx, | |
411 | pr_ie, &priv->proberesp_idx, | |
412 | ar_ie, &priv->assocresp_idx); | |
413 | ||
414 | done: | |
415 | kfree(beacon_ie); | |
416 | kfree(pr_ie); | |
417 | kfree(ar_ie); | |
418 | kfree(rsn_ie); | |
419 | ||
420 | return ret; | |
421 | } |