2 * NXP Wireless LAN device driver: management IE handling- setting and
5 * Copyright 2011-2020 NXP
7 * This software file (the "File") is distributed by NXP
8 * 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.
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.
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.
28 mwifiex_ie_index_used_by_other_intf(struct mwifiex_private *priv, u16 idx)
31 struct mwifiex_adapter *adapter = priv->adapter;
32 struct mwifiex_ie *ie;
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)
45 /* Get unused IE index. This index will be used for setting new IE */
47 mwifiex_ie_get_autoidx(struct mwifiex_private *priv, u16 subtype_mask,
48 struct mwifiex_ie *ie, u16 *index)
52 for (i = 0; i < priv->adapter->max_mgmt_ie_index; i++) {
53 mask = le16_to_cpu(priv->mgmt_ie[i].mgmt_subtype_mask);
54 len = le16_to_cpu(ie->ie_length);
56 if (mask == MWIFIEX_AUTO_IDX_MASK)
59 if (mask == subtype_mask) {
60 if (len > IEEE_MAX_IE_SIZE)
67 if (!priv->mgmt_ie[i].ie_length) {
68 if (mwifiex_ie_index_used_by_other_intf(priv, i))
79 /* This function prepares IE data buffer for command to be sent to FW */
81 mwifiex_update_autoindex_ies(struct mwifiex_private *priv,
82 struct mwifiex_ie_list *ie_list)
84 u16 travel_len, index, mask;
85 s16 input_len, tlv_len;
86 struct mwifiex_ie *ie;
89 input_len = le16_to_cpu(ie_list->len);
90 travel_len = sizeof(struct mwifiex_ie_types_header);
94 while (input_len >= sizeof(struct mwifiex_ie_types_header)) {
95 ie = (struct mwifiex_ie *)(((u8 *)ie_list) + travel_len);
96 tlv_len = le16_to_cpu(ie->ie_length);
97 travel_len += tlv_len + MWIFIEX_IE_HDR_SIZE;
99 if (input_len < tlv_len + MWIFIEX_IE_HDR_SIZE)
101 index = le16_to_cpu(ie->ie_index);
102 mask = le16_to_cpu(ie->mgmt_subtype_mask);
104 if (index == MWIFIEX_AUTO_IDX_MASK) {
105 /* automatic addition */
106 if (mwifiex_ie_get_autoidx(priv, mask, ie, &index))
108 if (index == MWIFIEX_AUTO_IDX_MASK)
111 tmp = (u8 *)&priv->mgmt_ie[index].ie_buffer;
112 memcpy(tmp, &ie->ie_buffer, le16_to_cpu(ie->ie_length));
113 priv->mgmt_ie[index].ie_length = ie->ie_length;
114 priv->mgmt_ie[index].ie_index = cpu_to_le16(index);
115 priv->mgmt_ie[index].mgmt_subtype_mask =
118 ie->ie_index = cpu_to_le16(index);
120 if (mask != MWIFIEX_DELETE_MASK)
123 * Check if this index is being used on any
126 if (mwifiex_ie_index_used_by_other_intf(priv, index))
130 memcpy(&priv->mgmt_ie[index], ie,
131 sizeof(struct mwifiex_ie));
134 le16_unaligned_add_cpu(&ie_list->len,
136 priv->mgmt_ie[index].ie_length) +
137 MWIFIEX_IE_HDR_SIZE);
138 input_len -= tlv_len + MWIFIEX_IE_HDR_SIZE;
141 if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP)
142 return mwifiex_send_cmd(priv, HostCmd_CMD_UAP_SYS_CONFIG,
144 UAP_CUSTOM_IE_I, ie_list, true);
149 /* Copy individual custom IEs for beacon, probe response and assoc response
150 * and prepare single structure for IE setting.
151 * This function also updates allocated IE indices from driver.
154 mwifiex_update_uap_custom_ie(struct mwifiex_private *priv,
155 struct mwifiex_ie *beacon_ie, u16 *beacon_idx,
156 struct mwifiex_ie *pr_ie, u16 *probe_idx,
157 struct mwifiex_ie *ar_ie, u16 *assoc_idx)
159 struct mwifiex_ie_list *ap_custom_ie;
164 ap_custom_ie = kzalloc(sizeof(*ap_custom_ie), GFP_KERNEL);
168 ap_custom_ie->type = cpu_to_le16(TLV_TYPE_MGMT_IE);
169 pos = (u8 *)ap_custom_ie->ie_list;
172 len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
173 le16_to_cpu(beacon_ie->ie_length);
174 memcpy(pos, beacon_ie, len);
176 le16_unaligned_add_cpu(&ap_custom_ie->len, len);
179 len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
180 le16_to_cpu(pr_ie->ie_length);
181 memcpy(pos, pr_ie, len);
183 le16_unaligned_add_cpu(&ap_custom_ie->len, len);
186 len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
187 le16_to_cpu(ar_ie->ie_length);
188 memcpy(pos, ar_ie, len);
190 le16_unaligned_add_cpu(&ap_custom_ie->len, len);
193 ret = mwifiex_update_autoindex_ies(priv, ap_custom_ie);
195 pos = (u8 *)(&ap_custom_ie->ie_list[0].ie_index);
196 if (beacon_ie && *beacon_idx == MWIFIEX_AUTO_IDX_MASK) {
197 /* save beacon ie index after auto-indexing */
198 *beacon_idx = le16_to_cpu(ap_custom_ie->ie_list[0].ie_index);
199 len = sizeof(*beacon_ie) - IEEE_MAX_IE_SIZE +
200 le16_to_cpu(beacon_ie->ie_length);
203 if (pr_ie && le16_to_cpu(pr_ie->ie_index) == MWIFIEX_AUTO_IDX_MASK) {
204 /* save probe resp ie index after auto-indexing */
205 *probe_idx = *((u16 *)pos);
206 len = sizeof(*pr_ie) - IEEE_MAX_IE_SIZE +
207 le16_to_cpu(pr_ie->ie_length);
210 if (ar_ie && le16_to_cpu(ar_ie->ie_index) == MWIFIEX_AUTO_IDX_MASK)
211 /* save assoc resp ie index after auto-indexing */
212 *assoc_idx = *((u16 *)pos);
218 /* This function checks if the vendor specified IE is present in passed buffer
219 * and copies it to mwifiex_ie structure.
220 * Function takes pointer to struct mwifiex_ie pointer as argument.
221 * If the vendor specified IE is present then memory is allocated for
222 * mwifiex_ie pointer and filled in with IE. Caller should take care of freeing
225 static int mwifiex_update_vs_ie(const u8 *ies, int ies_len,
226 struct mwifiex_ie **ie_ptr, u16 mask,
227 unsigned int oui, u8 oui_type)
229 struct ieee_types_header *vs_ie;
230 struct mwifiex_ie *ie = *ie_ptr;
233 vendor_ie = cfg80211_find_vendor_ie(oui, oui_type, ies, ies_len);
236 *ie_ptr = kzalloc(sizeof(struct mwifiex_ie),
243 vs_ie = (struct ieee_types_header *)vendor_ie;
244 if (le16_to_cpu(ie->ie_length) + vs_ie->len + 2 >
247 memcpy(ie->ie_buffer + le16_to_cpu(ie->ie_length),
248 vs_ie, vs_ie->len + 2);
249 le16_unaligned_add_cpu(&ie->ie_length, vs_ie->len + 2);
250 ie->mgmt_subtype_mask = cpu_to_le16(mask);
251 ie->ie_index = cpu_to_le16(MWIFIEX_AUTO_IDX_MASK);
258 /* This function parses beacon IEs, probe response IEs, association response IEs
259 * from cfg80211_ap_settings->beacon and sets these IE to FW.
261 static int mwifiex_set_mgmt_beacon_data_ies(struct mwifiex_private *priv,
262 struct cfg80211_beacon_data *data)
264 struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL, *ar_ie = NULL;
265 u16 beacon_idx = MWIFIEX_AUTO_IDX_MASK, pr_idx = MWIFIEX_AUTO_IDX_MASK;
266 u16 ar_idx = MWIFIEX_AUTO_IDX_MASK;
269 if (data->beacon_ies && data->beacon_ies_len) {
270 mwifiex_update_vs_ie(data->beacon_ies, data->beacon_ies_len,
271 &beacon_ie, MGMT_MASK_BEACON,
273 WLAN_OUI_TYPE_MICROSOFT_WPS);
274 mwifiex_update_vs_ie(data->beacon_ies, data->beacon_ies_len,
275 &beacon_ie, MGMT_MASK_BEACON,
276 WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P);
279 if (data->proberesp_ies && data->proberesp_ies_len) {
280 mwifiex_update_vs_ie(data->proberesp_ies,
281 data->proberesp_ies_len, &pr_ie,
282 MGMT_MASK_PROBE_RESP, WLAN_OUI_MICROSOFT,
283 WLAN_OUI_TYPE_MICROSOFT_WPS);
284 mwifiex_update_vs_ie(data->proberesp_ies,
285 data->proberesp_ies_len, &pr_ie,
286 MGMT_MASK_PROBE_RESP,
287 WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P);
290 if (data->assocresp_ies && data->assocresp_ies_len) {
291 mwifiex_update_vs_ie(data->assocresp_ies,
292 data->assocresp_ies_len, &ar_ie,
293 MGMT_MASK_ASSOC_RESP |
294 MGMT_MASK_REASSOC_RESP,
296 WLAN_OUI_TYPE_MICROSOFT_WPS);
297 mwifiex_update_vs_ie(data->assocresp_ies,
298 data->assocresp_ies_len, &ar_ie,
299 MGMT_MASK_ASSOC_RESP |
300 MGMT_MASK_REASSOC_RESP, WLAN_OUI_WFA,
301 WLAN_OUI_TYPE_WFA_P2P);
304 if (beacon_ie || pr_ie || ar_ie) {
305 ret = mwifiex_update_uap_custom_ie(priv, beacon_ie,
307 &pr_idx, ar_ie, &ar_idx);
312 priv->beacon_idx = beacon_idx;
313 priv->proberesp_idx = pr_idx;
314 priv->assocresp_idx = ar_idx;
324 /* This function parses head and tail IEs, from cfg80211_beacon_data and sets
327 static int mwifiex_uap_parse_tail_ies(struct mwifiex_private *priv,
328 struct cfg80211_beacon_data *info)
330 struct mwifiex_ie *gen_ie;
331 struct ieee_types_header *hdr;
332 struct ieee80211_vendor_ie *vendorhdr;
333 u16 gen_idx = MWIFIEX_AUTO_IDX_MASK, ie_len = 0;
334 int left_len, parsed_len = 0;
335 unsigned int token_len;
338 if (!info->tail || !info->tail_len)
341 gen_ie = kzalloc(sizeof(*gen_ie), GFP_KERNEL);
345 left_len = info->tail_len;
347 /* Many IEs are generated in FW by parsing bss configuration.
348 * Let's not add them here; else we may end up duplicating these IEs
350 while (left_len > sizeof(struct ieee_types_header)) {
351 hdr = (void *)(info->tail + parsed_len);
352 token_len = hdr->len + sizeof(struct ieee_types_header);
353 if (token_len > left_len) {
358 switch (hdr->element_id) {
360 case WLAN_EID_SUPP_RATES:
361 case WLAN_EID_COUNTRY:
362 case WLAN_EID_PWR_CONSTRAINT:
363 case WLAN_EID_ERP_INFO:
364 case WLAN_EID_EXT_SUPP_RATES:
365 case WLAN_EID_HT_CAPABILITY:
366 case WLAN_EID_HT_OPERATION:
367 case WLAN_EID_VHT_CAPABILITY:
368 case WLAN_EID_VHT_OPERATION:
370 case WLAN_EID_VENDOR_SPECIFIC:
371 /* Skip only Microsoft WMM IE */
372 if (cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
373 WLAN_OUI_TYPE_MICROSOFT_WMM,
379 if (ie_len + token_len > IEEE_MAX_IE_SIZE) {
383 memcpy(gen_ie->ie_buffer + ie_len, hdr, token_len);
387 left_len -= token_len;
388 parsed_len += token_len;
391 /* parse only WPA vendor IE from tail, WMM IE is configured by
394 vendorhdr = (void *)cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
395 WLAN_OUI_TYPE_MICROSOFT_WPA,
396 info->tail, info->tail_len);
398 token_len = vendorhdr->len + sizeof(struct ieee_types_header);
399 if (ie_len + token_len > IEEE_MAX_IE_SIZE) {
403 memcpy(gen_ie->ie_buffer + ie_len, vendorhdr, token_len);
410 gen_ie->ie_index = cpu_to_le16(gen_idx);
411 gen_ie->mgmt_subtype_mask = cpu_to_le16(MGMT_MASK_BEACON |
412 MGMT_MASK_PROBE_RESP |
413 MGMT_MASK_ASSOC_RESP);
414 gen_ie->ie_length = cpu_to_le16(ie_len);
416 if (mwifiex_update_uap_custom_ie(priv, gen_ie, &gen_idx, NULL, NULL,
422 priv->gen_idx = gen_idx;
429 /* This function parses different IEs-head & tail IEs, beacon IEs,
430 * probe response IEs, association response IEs from cfg80211_ap_settings
431 * function and sets these IE to FW.
433 int mwifiex_set_mgmt_ies(struct mwifiex_private *priv,
434 struct cfg80211_beacon_data *info)
438 ret = mwifiex_uap_parse_tail_ies(priv, info);
443 return mwifiex_set_mgmt_beacon_data_ies(priv, info);
446 /* This function removes management IE set */
447 int mwifiex_del_mgmt_ies(struct mwifiex_private *priv)
449 struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL;
450 struct mwifiex_ie *ar_ie = NULL, *gen_ie = NULL;
453 if (priv->gen_idx != MWIFIEX_AUTO_IDX_MASK) {
454 gen_ie = kmalloc(sizeof(*gen_ie), GFP_KERNEL);
458 gen_ie->ie_index = cpu_to_le16(priv->gen_idx);
459 gen_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK);
460 gen_ie->ie_length = 0;
461 if (mwifiex_update_uap_custom_ie(priv, gen_ie, &priv->gen_idx,
462 NULL, &priv->proberesp_idx,
463 NULL, &priv->assocresp_idx)) {
468 priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
471 if (priv->beacon_idx != MWIFIEX_AUTO_IDX_MASK) {
472 beacon_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL);
477 beacon_ie->ie_index = cpu_to_le16(priv->beacon_idx);
478 beacon_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK);
479 beacon_ie->ie_length = 0;
481 if (priv->proberesp_idx != MWIFIEX_AUTO_IDX_MASK) {
482 pr_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL);
487 pr_ie->ie_index = cpu_to_le16(priv->proberesp_idx);
488 pr_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK);
489 pr_ie->ie_length = 0;
491 if (priv->assocresp_idx != MWIFIEX_AUTO_IDX_MASK) {
492 ar_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL);
497 ar_ie->ie_index = cpu_to_le16(priv->assocresp_idx);
498 ar_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK);
499 ar_ie->ie_length = 0;
502 if (beacon_ie || pr_ie || ar_ie)
503 ret = mwifiex_update_uap_custom_ie(priv,
504 beacon_ie, &priv->beacon_idx,
505 pr_ie, &priv->proberesp_idx,
506 ar_ie, &priv->assocresp_idx);