| .. | .. |
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| 1 | +// SPDX-License-Identifier: GPL-2.0 |
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| 1 | 2 | /****************************************************************************** |
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| 2 | 3 | * ieee80211.c |
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| 3 | 4 | * |
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| 4 | 5 | * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. |
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| 5 | 6 | * Linux device driver for RTL8192SU |
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| 6 | | - * |
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| 7 | | - * This program is free software; you can redistribute it and/or modify it |
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| 8 | | - * under the terms of version 2 of the GNU General Public License as |
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| 9 | | - * published by the Free Software Foundation. |
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| 10 | | - * |
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| 11 | | - * This program is distributed in the hope that it will be useful, but WITHOUT |
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| 12 | | - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 13 | | - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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| 14 | | - * more details. |
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| 15 | 7 | * |
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| 16 | 8 | * Modifications for inclusion into the Linux staging tree are |
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| 17 | 9 | * Copyright(c) 2010 Larry Finger. All rights reserved. |
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| .. | .. |
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| 164 | 156 | return i; |
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| 165 | 157 | } |
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| 166 | 158 | |
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| 167 | | -int r8712_generate_ie(struct registry_priv *pregistrypriv) |
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| 159 | +int r8712_generate_ie(struct registry_priv *registrypriv) |
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| 168 | 160 | { |
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| 169 | 161 | int rate_len; |
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| 170 | 162 | uint sz = 0; |
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| 171 | | - struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network; |
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| 172 | | - u8 *ie = pdev_network->IEs; |
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| 173 | | - u16 beaconPeriod = (u16)pdev_network->Configuration.BeaconPeriod; |
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| 163 | + struct wlan_bssid_ex *dev_network = ®istrypriv->dev_network; |
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| 164 | + u8 *ie = dev_network->IEs; |
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| 165 | + u16 beaconPeriod = (u16)dev_network->Configuration.BeaconPeriod; |
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| 174 | 166 | |
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| 175 | 167 | /*timestamp will be inserted by hardware*/ |
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| 176 | 168 | sz += 8; |
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| .. | .. |
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| 182 | 174 | /*capability info*/ |
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| 183 | 175 | *(u16 *)ie = 0; |
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| 184 | 176 | *(__le16 *)ie |= cpu_to_le16(cap_IBSS); |
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| 185 | | - if (pregistrypriv->preamble == PREAMBLE_SHORT) |
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| 177 | + if (registrypriv->preamble == PREAMBLE_SHORT) |
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| 186 | 178 | *(__le16 *)ie |= cpu_to_le16(cap_ShortPremble); |
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| 187 | | - if (pdev_network->Privacy) |
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| 179 | + if (dev_network->Privacy) |
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| 188 | 180 | *(__le16 *)ie |= cpu_to_le16(cap_Privacy); |
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| 189 | 181 | sz += 2; |
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| 190 | 182 | ie += 2; |
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| 191 | 183 | /*SSID*/ |
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| 192 | | - ie = r8712_set_ie(ie, _SSID_IE_, pdev_network->Ssid.SsidLength, |
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| 193 | | - pdev_network->Ssid.Ssid, &sz); |
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| 184 | + ie = r8712_set_ie(ie, _SSID_IE_, dev_network->Ssid.SsidLength, |
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| 185 | + dev_network->Ssid.Ssid, &sz); |
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| 194 | 186 | /*supported rates*/ |
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| 195 | | - set_supported_rate(pdev_network->rates, pregistrypriv->wireless_mode); |
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| 196 | | - rate_len = r8712_get_rateset_len(pdev_network->rates); |
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| 187 | + set_supported_rate(dev_network->rates, registrypriv->wireless_mode); |
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| 188 | + rate_len = r8712_get_rateset_len(dev_network->rates); |
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| 197 | 189 | if (rate_len > 8) { |
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| 198 | 190 | ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_, 8, |
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| 199 | | - pdev_network->rates, &sz); |
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| 191 | + dev_network->rates, &sz); |
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| 200 | 192 | ie = r8712_set_ie(ie, _EXT_SUPPORTEDRATES_IE_, (rate_len - 8), |
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| 201 | | - (pdev_network->rates + 8), &sz); |
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| 193 | + (dev_network->rates + 8), &sz); |
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| 202 | 194 | } else { |
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| 203 | 195 | ie = r8712_set_ie(ie, _SUPPORTEDRATES_IE_, |
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| 204 | | - rate_len, pdev_network->rates, &sz); |
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| 196 | + rate_len, dev_network->rates, &sz); |
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| 205 | 197 | } |
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| 206 | 198 | /*DS parameter set*/ |
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| 207 | 199 | ie = r8712_set_ie(ie, _DSSET_IE_, 1, |
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| 208 | | - (u8 *)&pdev_network->Configuration.DSConfig, &sz); |
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| 200 | + (u8 *)&dev_network->Configuration.DSConfig, &sz); |
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| 209 | 201 | /*IBSS Parameter Set*/ |
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| 210 | 202 | ie = r8712_set_ie(ie, _IBSS_PARA_IE_, 2, |
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| 211 | | - (u8 *)&pdev_network->Configuration.ATIMWindow, &sz); |
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| 203 | + (u8 *)&dev_network->Configuration.ATIMWindow, &sz); |
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| 212 | 204 | return sz; |
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| 213 | 205 | } |
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| 214 | 206 | |
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| 215 | | -unsigned char *r8712_get_wpa_ie(unsigned char *pie, uint *wpa_ie_len, int limit) |
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| 207 | +unsigned char *r8712_get_wpa_ie(unsigned char *ie, uint *wpa_ie_len, int limit) |
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| 216 | 208 | { |
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| 217 | 209 | u32 len; |
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| 218 | 210 | u16 val16; |
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| 219 | 211 | unsigned char wpa_oui_type[] = {0x00, 0x50, 0xf2, 0x01}; |
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| 220 | | - u8 *pbuf = pie; |
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| 212 | + u8 *buf = ie; |
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| 221 | 213 | |
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| 222 | 214 | while (1) { |
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| 223 | | - pbuf = r8712_get_ie(pbuf, _WPA_IE_ID_, &len, limit); |
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| 224 | | - if (pbuf) { |
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| 215 | + buf = r8712_get_ie(buf, _WPA_IE_ID_, &len, limit); |
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| 216 | + if (buf) { |
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| 225 | 217 | /*check if oui matches...*/ |
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| 226 | | - if (memcmp((pbuf + 2), wpa_oui_type, |
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| 218 | + if (memcmp((buf + 2), wpa_oui_type, |
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| 227 | 219 | sizeof(wpa_oui_type))) |
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| 228 | 220 | goto check_next_ie; |
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| 229 | 221 | /*check version...*/ |
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| 230 | | - memcpy((u8 *)&val16, (pbuf + 6), sizeof(val16)); |
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| 222 | + memcpy((u8 *)&val16, (buf + 6), sizeof(val16)); |
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| 231 | 223 | le16_to_cpus(&val16); |
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| 232 | 224 | if (val16 != 0x0001) |
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| 233 | 225 | goto check_next_ie; |
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| 234 | | - *wpa_ie_len = *(pbuf + 1); |
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| 235 | | - return pbuf; |
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| 226 | + *wpa_ie_len = *(buf + 1); |
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| 227 | + return buf; |
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| 236 | 228 | } |
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| 237 | 229 | *wpa_ie_len = 0; |
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| 238 | 230 | return NULL; |
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| 239 | 231 | check_next_ie: |
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| 240 | | - limit = limit - (pbuf - pie) - 2 - len; |
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| 232 | + limit = limit - (buf - ie) - 2 - len; |
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| 241 | 233 | if (limit <= 0) |
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| 242 | 234 | break; |
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| 243 | | - pbuf += (2 + len); |
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| 235 | + buf += (2 + len); |
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| 244 | 236 | } |
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| 245 | 237 | *wpa_ie_len = 0; |
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| 246 | 238 | return NULL; |
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| 247 | 239 | } |
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| 248 | 240 | |
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| 249 | | -unsigned char *r8712_get_wpa2_ie(unsigned char *pie, uint *rsn_ie_len, int limit) |
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| 241 | +unsigned char *r8712_get_wpa2_ie(unsigned char *pie, uint *rsn_ie_len, |
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| 242 | + int limit) |
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| 250 | 243 | { |
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| 251 | 244 | return r8712_get_ie(pie, _WPA2_IE_ID_, rsn_ie_len, limit); |
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| 252 | 245 | } |
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| .. | .. |
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| 290 | 283 | |
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| 291 | 284 | if (wpa_ie_len <= 0) { |
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| 292 | 285 | /* No WPA IE - fail silently */ |
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| 293 | | - return _FAIL; |
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| 286 | + return -EINVAL; |
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| 294 | 287 | } |
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| 295 | 288 | if ((*wpa_ie != _WPA_IE_ID_) || |
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| 296 | 289 | (*(wpa_ie + 1) != (u8)(wpa_ie_len - 2)) || |
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| 297 | 290 | (memcmp(wpa_ie + 2, (void *)WPA_OUI_TYPE, WPA_SELECTOR_LEN))) |
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| 298 | | - return _FAIL; |
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| 291 | + return -EINVAL; |
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| 299 | 292 | pos = wpa_ie; |
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| 300 | 293 | pos += 8; |
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| 301 | 294 | left = wpa_ie_len - 8; |
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| .. | .. |
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| 305 | 298 | pos += WPA_SELECTOR_LEN; |
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| 306 | 299 | left -= WPA_SELECTOR_LEN; |
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| 307 | 300 | } else if (left > 0) { |
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| 308 | | - return _FAIL; |
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| 301 | + return -EINVAL; |
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| 309 | 302 | } |
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| 310 | 303 | /*pairwise_cipher*/ |
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| 311 | 304 | if (left >= 2) { |
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| .. | .. |
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| 313 | 306 | pos += 2; |
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| 314 | 307 | left -= 2; |
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| 315 | 308 | if (count == 0 || left < count * WPA_SELECTOR_LEN) |
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| 316 | | - return _FAIL; |
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| 309 | + return -EINVAL; |
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| 317 | 310 | for (i = 0; i < count; i++) { |
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| 318 | 311 | *pairwise_cipher |= r8712_get_wpa_cipher_suite(pos); |
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| 319 | 312 | pos += WPA_SELECTOR_LEN; |
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| 320 | 313 | left -= WPA_SELECTOR_LEN; |
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| 321 | 314 | } |
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| 322 | 315 | } else if (left == 1) { |
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| 323 | | - return _FAIL; |
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| 316 | + return -EINVAL; |
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| 324 | 317 | } |
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| 325 | | - return _SUCCESS; |
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| 318 | + return 0; |
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| 326 | 319 | } |
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| 327 | 320 | |
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| 328 | 321 | int r8712_parse_wpa2_ie(u8 *rsn_ie, int rsn_ie_len, int *group_cipher, |
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| .. | .. |
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| 334 | 327 | |
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| 335 | 328 | if (rsn_ie_len <= 0) { |
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| 336 | 329 | /* No RSN IE - fail silently */ |
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| 337 | | - return _FAIL; |
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| 330 | + return -EINVAL; |
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| 338 | 331 | } |
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| 339 | 332 | if ((*rsn_ie != _WPA2_IE_ID_) || |
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| 340 | 333 | (*(rsn_ie + 1) != (u8)(rsn_ie_len - 2))) |
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| 341 | | - return _FAIL; |
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| 334 | + return -EINVAL; |
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| 342 | 335 | pos = rsn_ie; |
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| 343 | 336 | pos += 4; |
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| 344 | 337 | left = rsn_ie_len - 4; |
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| .. | .. |
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| 348 | 341 | pos += RSN_SELECTOR_LEN; |
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| 349 | 342 | left -= RSN_SELECTOR_LEN; |
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| 350 | 343 | } else if (left > 0) { |
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| 351 | | - return _FAIL; |
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| 344 | + return -EINVAL; |
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| 352 | 345 | } |
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| 353 | 346 | /*pairwise_cipher*/ |
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| 354 | 347 | if (left >= 2) { |
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| .. | .. |
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| 356 | 349 | pos += 2; |
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| 357 | 350 | left -= 2; |
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| 358 | 351 | if (count == 0 || left < count * RSN_SELECTOR_LEN) |
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| 359 | | - return _FAIL; |
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| 352 | + return -EINVAL; |
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| 360 | 353 | for (i = 0; i < count; i++) { |
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| 361 | 354 | *pairwise_cipher |= r8712_get_wpa2_cipher_suite(pos); |
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| 362 | 355 | pos += RSN_SELECTOR_LEN; |
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| 363 | 356 | left -= RSN_SELECTOR_LEN; |
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| 364 | 357 | } |
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| 365 | 358 | } else if (left == 1) { |
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| 366 | | - return _FAIL; |
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| 359 | + return -EINVAL; |
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| 367 | 360 | } |
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| 368 | | - return _SUCCESS; |
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| 361 | + return 0; |
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| 369 | 362 | } |
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| 370 | 363 | |
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| 371 | 364 | int r8712_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len, |
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| .. | .. |
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| 416 | 409 | match = true; |
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| 417 | 410 | break; |
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| 418 | 411 | } |
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| 419 | | - cnt += in_ie[cnt + 1] + 2; /* goto next */ |
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| 412 | + cnt += in_ie[cnt + 1] + 2; /* goto next */ |
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| 420 | 413 | } |
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| 421 | 414 | return match; |
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| 422 | 415 | } |
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