| 1 | /* |
| 2 | * Marvell Wireless LAN device driver: management IE handling- setting and |
| 3 | * deleting IE. |
| 4 | * |
| 5 | * Copyright (C) 2012-2014, 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); |
| 54 | len = le16_to_cpu(ie->ie_length); |
| 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, tlv_len; |
| 86 | struct mwifiex_ie *ie; |
| 87 | u8 *tmp; |
| 88 | |
| 89 | input_len = le16_to_cpu(ie_list->len); |
| 90 | travel_len = sizeof(struct mwifiex_ie_types_header); |
| 91 | |
| 92 | ie_list->len = 0; |
| 93 | |
| 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; |
| 98 | |
| 99 | if (input_len < tlv_len + MWIFIEX_IE_HDR_SIZE) |
| 100 | return -1; |
| 101 | index = le16_to_cpu(ie->ie_index); |
| 102 | mask = le16_to_cpu(ie->mgmt_subtype_mask); |
| 103 | |
| 104 | if (index == MWIFIEX_AUTO_IDX_MASK) { |
| 105 | /* automatic addition */ |
| 106 | if (mwifiex_ie_get_autoidx(priv, mask, ie, &index)) |
| 107 | return -1; |
| 108 | if (index == MWIFIEX_AUTO_IDX_MASK) |
| 109 | return -1; |
| 110 | |
| 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 = |
| 116 | cpu_to_le16(mask); |
| 117 | |
| 118 | ie->ie_index = cpu_to_le16(index); |
| 119 | } else { |
| 120 | if (mask != MWIFIEX_DELETE_MASK) |
| 121 | return -1; |
| 122 | /* |
| 123 | * Check if this index is being used on any |
| 124 | * other interface. |
| 125 | */ |
| 126 | if (mwifiex_ie_index_used_by_other_intf(priv, index)) |
| 127 | return -1; |
| 128 | |
| 129 | ie->ie_length = 0; |
| 130 | memcpy(&priv->mgmt_ie[index], ie, |
| 131 | sizeof(struct mwifiex_ie)); |
| 132 | } |
| 133 | |
| 134 | le16_add_cpu(&ie_list->len, |
| 135 | le16_to_cpu(priv->mgmt_ie[index].ie_length) + |
| 136 | MWIFIEX_IE_HDR_SIZE); |
| 137 | input_len -= tlv_len + MWIFIEX_IE_HDR_SIZE; |
| 138 | } |
| 139 | |
| 140 | if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) |
| 141 | return mwifiex_send_cmd(priv, HostCmd_CMD_UAP_SYS_CONFIG, |
| 142 | HostCmd_ACT_GEN_SET, |
| 143 | UAP_CUSTOM_IE_I, ie_list, false); |
| 144 | |
| 145 | return 0; |
| 146 | } |
| 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(*ap_custom_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 | |
| 213 | kfree(ap_custom_ie); |
| 214 | return ret; |
| 215 | } |
| 216 | |
| 217 | /* This function checks if the vendor specified IE is present in passed buffer |
| 218 | * and copies it to mwifiex_ie structure. |
| 219 | * Function takes pointer to struct mwifiex_ie pointer as argument. |
| 220 | * If the vendor specified IE is present then memory is allocated for |
| 221 | * mwifiex_ie pointer and filled in with IE. Caller should take care of freeing |
| 222 | * this memory. |
| 223 | */ |
| 224 | static int mwifiex_update_vs_ie(const u8 *ies, int ies_len, |
| 225 | struct mwifiex_ie **ie_ptr, u16 mask, |
| 226 | unsigned int oui, u8 oui_type) |
| 227 | { |
| 228 | struct ieee_types_header *vs_ie; |
| 229 | struct mwifiex_ie *ie = *ie_ptr; |
| 230 | const u8 *vendor_ie; |
| 231 | |
| 232 | vendor_ie = cfg80211_find_vendor_ie(oui, oui_type, ies, ies_len); |
| 233 | if (vendor_ie) { |
| 234 | if (!*ie_ptr) { |
| 235 | *ie_ptr = kzalloc(sizeof(struct mwifiex_ie), |
| 236 | GFP_KERNEL); |
| 237 | if (!*ie_ptr) |
| 238 | return -ENOMEM; |
| 239 | ie = *ie_ptr; |
| 240 | } |
| 241 | |
| 242 | vs_ie = (struct ieee_types_header *)vendor_ie; |
| 243 | memcpy(ie->ie_buffer + le16_to_cpu(ie->ie_length), |
| 244 | vs_ie, vs_ie->len + 2); |
| 245 | le16_add_cpu(&ie->ie_length, vs_ie->len + 2); |
| 246 | ie->mgmt_subtype_mask = cpu_to_le16(mask); |
| 247 | ie->ie_index = cpu_to_le16(MWIFIEX_AUTO_IDX_MASK); |
| 248 | } |
| 249 | |
| 250 | *ie_ptr = ie; |
| 251 | return 0; |
| 252 | } |
| 253 | |
| 254 | /* This function parses beacon IEs, probe response IEs, association response IEs |
| 255 | * from cfg80211_ap_settings->beacon and sets these IE to FW. |
| 256 | */ |
| 257 | static int mwifiex_set_mgmt_beacon_data_ies(struct mwifiex_private *priv, |
| 258 | struct cfg80211_beacon_data *data) |
| 259 | { |
| 260 | struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL, *ar_ie = NULL; |
| 261 | u16 beacon_idx = MWIFIEX_AUTO_IDX_MASK, pr_idx = MWIFIEX_AUTO_IDX_MASK; |
| 262 | u16 ar_idx = MWIFIEX_AUTO_IDX_MASK; |
| 263 | int ret = 0; |
| 264 | |
| 265 | if (data->beacon_ies && data->beacon_ies_len) { |
| 266 | mwifiex_update_vs_ie(data->beacon_ies, data->beacon_ies_len, |
| 267 | &beacon_ie, MGMT_MASK_BEACON, |
| 268 | WLAN_OUI_MICROSOFT, |
| 269 | WLAN_OUI_TYPE_MICROSOFT_WPS); |
| 270 | mwifiex_update_vs_ie(data->beacon_ies, data->beacon_ies_len, |
| 271 | &beacon_ie, MGMT_MASK_BEACON, |
| 272 | WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P); |
| 273 | } |
| 274 | |
| 275 | if (data->proberesp_ies && data->proberesp_ies_len) { |
| 276 | mwifiex_update_vs_ie(data->proberesp_ies, |
| 277 | data->proberesp_ies_len, &pr_ie, |
| 278 | MGMT_MASK_PROBE_RESP, WLAN_OUI_MICROSOFT, |
| 279 | WLAN_OUI_TYPE_MICROSOFT_WPS); |
| 280 | mwifiex_update_vs_ie(data->proberesp_ies, |
| 281 | data->proberesp_ies_len, &pr_ie, |
| 282 | MGMT_MASK_PROBE_RESP, |
| 283 | WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P); |
| 284 | } |
| 285 | |
| 286 | if (data->assocresp_ies && data->assocresp_ies_len) { |
| 287 | mwifiex_update_vs_ie(data->assocresp_ies, |
| 288 | data->assocresp_ies_len, &ar_ie, |
| 289 | MGMT_MASK_ASSOC_RESP | |
| 290 | MGMT_MASK_REASSOC_RESP, |
| 291 | WLAN_OUI_MICROSOFT, |
| 292 | WLAN_OUI_TYPE_MICROSOFT_WPS); |
| 293 | mwifiex_update_vs_ie(data->assocresp_ies, |
| 294 | data->assocresp_ies_len, &ar_ie, |
| 295 | MGMT_MASK_ASSOC_RESP | |
| 296 | MGMT_MASK_REASSOC_RESP, WLAN_OUI_WFA, |
| 297 | WLAN_OUI_TYPE_WFA_P2P); |
| 298 | } |
| 299 | |
| 300 | if (beacon_ie || pr_ie || ar_ie) { |
| 301 | ret = mwifiex_update_uap_custom_ie(priv, beacon_ie, |
| 302 | &beacon_idx, pr_ie, |
| 303 | &pr_idx, ar_ie, &ar_idx); |
| 304 | if (ret) |
| 305 | goto done; |
| 306 | } |
| 307 | |
| 308 | priv->beacon_idx = beacon_idx; |
| 309 | priv->proberesp_idx = pr_idx; |
| 310 | priv->assocresp_idx = ar_idx; |
| 311 | |
| 312 | done: |
| 313 | kfree(beacon_ie); |
| 314 | kfree(pr_ie); |
| 315 | kfree(ar_ie); |
| 316 | |
| 317 | return ret; |
| 318 | } |
| 319 | |
| 320 | /* This function parses head and tail IEs, from cfg80211_beacon_data and sets |
| 321 | * these IE to FW. |
| 322 | */ |
| 323 | static int mwifiex_uap_parse_tail_ies(struct mwifiex_private *priv, |
| 324 | struct cfg80211_beacon_data *info) |
| 325 | { |
| 326 | struct mwifiex_ie *gen_ie; |
| 327 | struct ieee_types_header *hdr; |
| 328 | struct ieee80211_vendor_ie *vendorhdr; |
| 329 | u16 gen_idx = MWIFIEX_AUTO_IDX_MASK, ie_len = 0; |
| 330 | int left_len, parsed_len = 0; |
| 331 | |
| 332 | if (!info->tail || !info->tail_len) |
| 333 | return 0; |
| 334 | |
| 335 | gen_ie = kzalloc(sizeof(*gen_ie), GFP_KERNEL); |
| 336 | if (!gen_ie) |
| 337 | return -ENOMEM; |
| 338 | |
| 339 | left_len = info->tail_len; |
| 340 | |
| 341 | /* Many IEs are generated in FW by parsing bss configuration. |
| 342 | * Let's not add them here; else we may end up duplicating these IEs |
| 343 | */ |
| 344 | while (left_len > sizeof(struct ieee_types_header)) { |
| 345 | hdr = (void *)(info->tail + parsed_len); |
| 346 | switch (hdr->element_id) { |
| 347 | case WLAN_EID_SSID: |
| 348 | case WLAN_EID_SUPP_RATES: |
| 349 | case WLAN_EID_COUNTRY: |
| 350 | case WLAN_EID_PWR_CONSTRAINT: |
| 351 | case WLAN_EID_EXT_SUPP_RATES: |
| 352 | case WLAN_EID_HT_CAPABILITY: |
| 353 | case WLAN_EID_HT_OPERATION: |
| 354 | case WLAN_EID_VHT_CAPABILITY: |
| 355 | case WLAN_EID_VHT_OPERATION: |
| 356 | case WLAN_EID_VENDOR_SPECIFIC: |
| 357 | break; |
| 358 | default: |
| 359 | memcpy(gen_ie->ie_buffer + ie_len, hdr, |
| 360 | hdr->len + sizeof(struct ieee_types_header)); |
| 361 | ie_len += hdr->len + sizeof(struct ieee_types_header); |
| 362 | break; |
| 363 | } |
| 364 | left_len -= hdr->len + sizeof(struct ieee_types_header); |
| 365 | parsed_len += hdr->len + sizeof(struct ieee_types_header); |
| 366 | } |
| 367 | |
| 368 | /* parse only WPA vendor IE from tail, WMM IE is configured by |
| 369 | * bss_config command |
| 370 | */ |
| 371 | vendorhdr = (void *)cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT, |
| 372 | WLAN_OUI_TYPE_MICROSOFT_WPA, |
| 373 | info->tail, info->tail_len); |
| 374 | if (vendorhdr) { |
| 375 | memcpy(gen_ie->ie_buffer + ie_len, vendorhdr, |
| 376 | vendorhdr->len + sizeof(struct ieee_types_header)); |
| 377 | ie_len += vendorhdr->len + sizeof(struct ieee_types_header); |
| 378 | } |
| 379 | |
| 380 | if (!ie_len) { |
| 381 | kfree(gen_ie); |
| 382 | return 0; |
| 383 | } |
| 384 | |
| 385 | gen_ie->ie_index = cpu_to_le16(gen_idx); |
| 386 | gen_ie->mgmt_subtype_mask = cpu_to_le16(MGMT_MASK_BEACON | |
| 387 | MGMT_MASK_PROBE_RESP | |
| 388 | MGMT_MASK_ASSOC_RESP); |
| 389 | gen_ie->ie_length = cpu_to_le16(ie_len); |
| 390 | |
| 391 | if (mwifiex_update_uap_custom_ie(priv, gen_ie, &gen_idx, NULL, NULL, |
| 392 | NULL, NULL)) { |
| 393 | kfree(gen_ie); |
| 394 | return -1; |
| 395 | } |
| 396 | |
| 397 | priv->gen_idx = gen_idx; |
| 398 | kfree(gen_ie); |
| 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | /* This function parses different IEs-head & tail IEs, beacon IEs, |
| 403 | * probe response IEs, association response IEs from cfg80211_ap_settings |
| 404 | * function and sets these IE to FW. |
| 405 | */ |
| 406 | int mwifiex_set_mgmt_ies(struct mwifiex_private *priv, |
| 407 | struct cfg80211_beacon_data *info) |
| 408 | { |
| 409 | int ret; |
| 410 | |
| 411 | ret = mwifiex_uap_parse_tail_ies(priv, info); |
| 412 | return ret; |
| 413 | |
| 414 | return mwifiex_set_mgmt_beacon_data_ies(priv, info); |
| 415 | } |
| 416 | |
| 417 | /* This function removes management IE set */ |
| 418 | int mwifiex_del_mgmt_ies(struct mwifiex_private *priv) |
| 419 | { |
| 420 | struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL; |
| 421 | struct mwifiex_ie *ar_ie = NULL, *gen_ie = NULL; |
| 422 | int ret = 0; |
| 423 | |
| 424 | if (priv->gen_idx != MWIFIEX_AUTO_IDX_MASK) { |
| 425 | gen_ie = kmalloc(sizeof(*gen_ie), GFP_KERNEL); |
| 426 | if (!gen_ie) |
| 427 | return -ENOMEM; |
| 428 | |
| 429 | gen_ie->ie_index = cpu_to_le16(priv->gen_idx); |
| 430 | gen_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK); |
| 431 | gen_ie->ie_length = 0; |
| 432 | if (mwifiex_update_uap_custom_ie(priv, gen_ie, &priv->gen_idx, |
| 433 | NULL, &priv->proberesp_idx, |
| 434 | NULL, &priv->assocresp_idx)) { |
| 435 | ret = -1; |
| 436 | goto done; |
| 437 | } |
| 438 | |
| 439 | priv->gen_idx = MWIFIEX_AUTO_IDX_MASK; |
| 440 | } |
| 441 | |
| 442 | if (priv->beacon_idx != MWIFIEX_AUTO_IDX_MASK) { |
| 443 | beacon_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); |
| 444 | if (!beacon_ie) { |
| 445 | ret = -ENOMEM; |
| 446 | goto done; |
| 447 | } |
| 448 | beacon_ie->ie_index = cpu_to_le16(priv->beacon_idx); |
| 449 | beacon_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK); |
| 450 | beacon_ie->ie_length = 0; |
| 451 | } |
| 452 | if (priv->proberesp_idx != MWIFIEX_AUTO_IDX_MASK) { |
| 453 | pr_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); |
| 454 | if (!pr_ie) { |
| 455 | ret = -ENOMEM; |
| 456 | goto done; |
| 457 | } |
| 458 | pr_ie->ie_index = cpu_to_le16(priv->proberesp_idx); |
| 459 | pr_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK); |
| 460 | pr_ie->ie_length = 0; |
| 461 | } |
| 462 | if (priv->assocresp_idx != MWIFIEX_AUTO_IDX_MASK) { |
| 463 | ar_ie = kmalloc(sizeof(struct mwifiex_ie), GFP_KERNEL); |
| 464 | if (!ar_ie) { |
| 465 | ret = -ENOMEM; |
| 466 | goto done; |
| 467 | } |
| 468 | ar_ie->ie_index = cpu_to_le16(priv->assocresp_idx); |
| 469 | ar_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK); |
| 470 | ar_ie->ie_length = 0; |
| 471 | } |
| 472 | |
| 473 | if (beacon_ie || pr_ie || ar_ie) |
| 474 | ret = mwifiex_update_uap_custom_ie(priv, |
| 475 | beacon_ie, &priv->beacon_idx, |
| 476 | pr_ie, &priv->proberesp_idx, |
| 477 | ar_ie, &priv->assocresp_idx); |
| 478 | |
| 479 | done: |
| 480 | kfree(beacon_ie); |
| 481 | kfree(pr_ie); |
| 482 | kfree(ar_ie); |
| 483 | |
| 484 | return ret; |
| 485 | } |