drivers/staging/rtl8192e/rtllib_wx.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2004 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are based on the WEP enablement code provided by the
   6  * Host AP project hostap-drivers v0.1.3
   7  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   8  * <jkmaline@cc.hut.fi>
   9  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  * more details.
  19  *
  20  * The full GNU General Public License is included in this distribution in the
  21  * file called LICENSE.
  22  *
  23  * Contact Information:
  24  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  25  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26  *
  27  *****************************************************************************/
  28 #include <linux/wireless.h>
  29 #include <linux/kmod.h>
  30 #include <linux/module.h>
  31 #include <linux/etherdevice.h>
  32 #include "rtllib.h"
  33 struct modes_unit {
  34         char *mode_string;
  35         int mode_size;
  36 };
  37 static struct modes_unit rtllib_modes[] = {
  38         {"a", 1},
  39         {"b", 1},
  40         {"g", 1},
  41         {"?", 1},
  42         {"N-24G", 5},
  43         {"N-5G", 4},
  44 };
  45
  46 #define MAX_CUSTOM_LEN 64
  47 static inline char *rtl819x_translate_scan(struct rtllib_device *ieee,
  48                                            char *start, char *stop,
  49                                            struct rtllib_network *network,
  50                                            struct iw_request_info *info)
  51 {
  52         char custom[MAX_CUSTOM_LEN];
  53         char proto_name[IFNAMSIZ];
  54         char *pname = proto_name;
  55         char *p;
  56         struct iw_event iwe;
  57         int i, j;
  58         u16 max_rate, rate;
  59         static u8       EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};
  60
  61         /* First entry *MUST* be the AP MAC address */
  62         iwe.cmd = SIOCGIWAP;
  63         iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
  64         ether_addr_copy(iwe.u.ap_addr.sa_data, network->bssid);
  65         start = iwe_stream_add_event_rsl(info, start, stop,
  66                                          &iwe, IW_EV_ADDR_LEN);
  67         /* Remaining entries will be displayed in the order we provide them */
  68
  69         /* Add the ESSID */
  70         iwe.cmd = SIOCGIWESSID;
  71         iwe.u.data.flags = 1;
  72         if (network->ssid_len > 0) {
  73                 iwe.u.data.length = min_t(u8, network->ssid_len, 32);
  74                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe,
  75                                                  network->ssid);
  76         } else if (network->hidden_ssid_len == 0) {
  77                 iwe.u.data.length = sizeof("<hidden>");
  78                 start = iwe_stream_add_point_rsl(info, start, stop,
  79                                                  &iwe, "<hidden>");
  80         } else {
  81                 iwe.u.data.length = min_t(u8, network->hidden_ssid_len, 32);
  82                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe,
  83                                                  network->hidden_ssid);
  84         }
  85         /* Add the protocol name */
  86         iwe.cmd = SIOCGIWNAME;
  87         for (i = 0; i < ARRAY_SIZE(rtllib_modes); i++) {
  88                 if (network->mode&(1<<i)) {
  89                         sprintf(pname, rtllib_modes[i].mode_string,
  90                                 rtllib_modes[i].mode_size);
  91                         pname += rtllib_modes[i].mode_size;
  92                 }
  93         }
  94         *pname = '\0';
  95         snprintf(iwe.u.name, IFNAMSIZ, "IEEE802.11%s", proto_name);
  96         start = iwe_stream_add_event_rsl(info, start, stop,
  97                                          &iwe, IW_EV_CHAR_LEN);
  98         /* Add mode */
  99         iwe.cmd = SIOCGIWMODE;
 100         if (network->capability &
 101             (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
 102                 if (network->capability & WLAN_CAPABILITY_ESS)
 103                         iwe.u.mode = IW_MODE_MASTER;
 104                 else
 105                         iwe.u.mode = IW_MODE_ADHOC;
 106                 start = iwe_stream_add_event_rsl(info, start, stop,
 107                                                  &iwe, IW_EV_UINT_LEN);
 108         }
 109
 110         /* Add frequency/channel */
 111         iwe.cmd = SIOCGIWFREQ;
 112         iwe.u.freq.m = network->channel;
 113         iwe.u.freq.e = 0;
 114         iwe.u.freq.i = 0;
 115         start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 116                                          IW_EV_FREQ_LEN);
 117
 118         /* Add encryption capability */
 119         iwe.cmd = SIOCGIWENCODE;
 120         if (network->capability & WLAN_CAPABILITY_PRIVACY)
 121                 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 122         else
 123                 iwe.u.data.flags = IW_ENCODE_DISABLED;
 124         iwe.u.data.length = 0;
 125         start = iwe_stream_add_point_rsl(info, start, stop,
 126                                          &iwe, network->ssid);
 127         /* Add basic and extended rates */
 128         max_rate = 0;
 129         p = custom;
 130         p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
 131         for (i = 0, j = 0; i < network->rates_len;) {
 132                 if (j < network->rates_ex_len &&
 133                     ((network->rates_ex[j] & 0x7F) <
 134                      (network->rates[i] & 0x7F)))
 135                         rate = network->rates_ex[j++] & 0x7F;
 136                 else
 137                         rate = network->rates[i++] & 0x7F;
 138                 if (rate > max_rate)
 139                         max_rate = rate;
 140                 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 141                               "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 142         }
 143         for (; j < network->rates_ex_len; j++) {
 144                 rate = network->rates_ex[j] & 0x7F;
 145                 p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 146                               "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 147                 if (rate > max_rate)
 148                         max_rate = rate;
 149         }
 150
 151         if (network->mode >= IEEE_N_24G) {
 152                 struct ht_capab_ele *ht_cap = NULL;
 153                 bool is40M = false, isShortGI = false;
 154                 u8 max_mcs = 0;
 155
 156                 if (!memcmp(network->bssht.bdHTCapBuf, EWC11NHTCap, 4))
 157                         ht_cap = (struct ht_capab_ele *)
 158                                  &network->bssht.bdHTCapBuf[4];
 159                 else
 160                         ht_cap = (struct ht_capab_ele *)
 161                                  &network->bssht.bdHTCapBuf[0];
 162                 is40M = (ht_cap->ChlWidth) ? 1 : 0;
 163                 isShortGI = (ht_cap->ChlWidth) ?
 164                                 ((ht_cap->ShortGI40Mhz) ? 1 : 0) :
 165                                 ((ht_cap->ShortGI20Mhz) ? 1 : 0);
 166
 167                 max_mcs = HTGetHighestMCSRate(ieee, ht_cap->MCS,
 168                                               MCS_FILTER_ALL);
 169                 rate = MCS_DATA_RATE[is40M][isShortGI][max_mcs & 0x7f];
 170                 if (rate > max_rate)
 171                         max_rate = rate;
 172         }
 173         iwe.cmd = SIOCGIWRATE;
 174         iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
 175         iwe.u.bitrate.value = max_rate * 500000;
 176         start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 177                                      IW_EV_PARAM_LEN);
 178         iwe.cmd = IWEVCUSTOM;
 179         iwe.u.data.length = p - custom;
 180         if (iwe.u.data.length)
 181                 start = iwe_stream_add_point_rsl(info, start, stop,
 182                                                  &iwe, custom);
 183         /* Add quality statistics */
 184         /* TODO: Fix these values... */
 185         iwe.cmd = IWEVQUAL;
 186         iwe.u.qual.qual = network->stats.signal;
 187         iwe.u.qual.level = network->stats.rssi;
 188         iwe.u.qual.noise = network->stats.noise;
 189         iwe.u.qual.updated = network->stats.mask & RTLLIB_STATMASK_WEMASK;
 190         if (!(network->stats.mask & RTLLIB_STATMASK_RSSI))
 191                 iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
 192         if (!(network->stats.mask & RTLLIB_STATMASK_NOISE))
 193                 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
 194         if (!(network->stats.mask & RTLLIB_STATMASK_SIGNAL))
 195                 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
 196         iwe.u.qual.updated = 7;
 197         start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 198                                          IW_EV_QUAL_LEN);
 199
 200         iwe.cmd = IWEVCUSTOM;
 201         p = custom;
 202         iwe.u.data.length = p - custom;
 203         if (iwe.u.data.length)
 204                 start = iwe_stream_add_point_rsl(info, start, stop,
 205                                                  &iwe, custom);
 206
 207         memset(&iwe, 0, sizeof(iwe));
 208         if (network->wpa_ie_len) {
 209                 char buf[MAX_WPA_IE_LEN];
 210
 211                 memcpy(buf, network->wpa_ie, network->wpa_ie_len);
 212                 iwe.cmd = IWEVGENIE;
 213                 iwe.u.data.length = network->wpa_ie_len;
 214                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 215         }
 216         memset(&iwe, 0, sizeof(iwe));
 217         if (network->rsn_ie_len) {
 218                 char buf[MAX_WPA_IE_LEN];
 219
 220                 memcpy(buf, network->rsn_ie, network->rsn_ie_len);
 221                 iwe.cmd = IWEVGENIE;
 222                 iwe.u.data.length = network->rsn_ie_len;
 223                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 224         }
 225
 226         /* add info for WZC */
 227         memset(&iwe, 0, sizeof(iwe));
 228         if (network->wzc_ie_len) {
 229                 char buf[MAX_WZC_IE_LEN];
 230
 231                 memcpy(buf, network->wzc_ie, network->wzc_ie_len);
 232                 iwe.cmd = IWEVGENIE;
 233                 iwe.u.data.length = network->wzc_ie_len;
 234                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 235         }
 236
 237         /* Add EXTRA: Age to display seconds since last beacon/probe response
 238          * for given network.
 239          */
 240         iwe.cmd = IWEVCUSTOM;
 241         p = custom;
 242         p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 243                       " Last beacon: %lums ago",
 244                       (jiffies - network->last_scanned) / (HZ / 100));
 245         iwe.u.data.length = p - custom;
 246         if (iwe.u.data.length)
 247                 start = iwe_stream_add_point_rsl(info, start, stop,
 248                                                  &iwe, custom);
 249
 250         return start;
 251 }
 252
 253 int rtllib_wx_get_scan(struct rtllib_device *ieee,
 254                           struct iw_request_info *info,
 255                           union iwreq_data *wrqu, char *extra)
 256 {
 257         struct rtllib_network *network;
 258         unsigned long flags;
 259
 260         char *ev = extra;
 261         char *stop = ev + wrqu->data.length;
 262         int i = 0;
 263         int err = 0;
 264
 265         netdev_dbg(ieee->dev, "Getting scan\n");
 266         mutex_lock(&ieee->wx_mutex);
 267         spin_lock_irqsave(&ieee->lock, flags);
 268
 269         list_for_each_entry(network, &ieee->network_list, list) {
 270                 i++;
 271                 if ((stop - ev) < 200) {
 272                         err = -E2BIG;
 273                         break;
 274                 }
 275                 if (ieee->scan_age == 0 ||
 276                     time_after(network->last_scanned + ieee->scan_age, jiffies))
 277                         ev = rtl819x_translate_scan(ieee, ev, stop, network,
 278                                                     info);
 279                 else
 280                         netdev_dbg(ieee->dev,
 281                                    "Network '%s ( %pM)' hidden due to age (%lums).\n",
 282                                    escape_essid(network->ssid,
 283                                                 network->ssid_len),
 284                                    network->bssid,
 285                                    (jiffies - network->last_scanned) /
 286                                    (HZ / 100));
 287         }
 288
 289         spin_unlock_irqrestore(&ieee->lock, flags);
 290         mutex_unlock(&ieee->wx_mutex);
 291         wrqu->data.length = ev -  extra;
 292         wrqu->data.flags = 0;
 293
 294         netdev_dbg(ieee->dev, "%s(): %d networks returned.\n", __func__, i);
 295
 296         return err;
 297 }
 298 EXPORT_SYMBOL(rtllib_wx_get_scan);
 299
 300 int rtllib_wx_set_encode(struct rtllib_device *ieee,
 301                             struct iw_request_info *info,
 302                             union iwreq_data *wrqu, char *keybuf)
 303 {
 304         struct iw_point *erq = &(wrqu->encoding);
 305         struct net_device *dev = ieee->dev;
 306         struct rtllib_security sec = {
 307                 .flags = 0
 308         };
 309         int i, key, key_provided, len;
 310         struct lib80211_crypt_data **crypt;
 311
 312         netdev_dbg(ieee->dev, "%s()\n", __func__);
 313
 314         key = erq->flags & IW_ENCODE_INDEX;
 315         if (key) {
 316                 if (key > NUM_WEP_KEYS)
 317                         return -EINVAL;
 318                 key--;
 319                 key_provided = 1;
 320         } else {
 321                 key_provided = 0;
 322                 key = ieee->crypt_info.tx_keyidx;
 323         }
 324
 325         netdev_dbg(ieee->dev, "Key: %d [%s]\n", key, key_provided ?
 326                            "provided" : "default");
 327         crypt = &ieee->crypt_info.crypt[key];
 328         if (erq->flags & IW_ENCODE_DISABLED) {
 329                 if (key_provided && *crypt) {
 330                         netdev_dbg(ieee->dev,
 331                                    "Disabling encryption on key %d.\n", key);
 332                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 333                 } else
 334                         netdev_dbg(ieee->dev, "Disabling encryption.\n");
 335
 336                 /* Check all the keys to see if any are still configured,
 337                  * and if no key index was provided, de-init them all
 338                  */
 339                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 340                         if (ieee->crypt_info.crypt[i] != NULL) {
 341                                 if (key_provided)
 342                                         break;
 343                                 lib80211_crypt_delayed_deinit(&ieee->crypt_info,
 344                                                     &ieee->crypt_info.crypt[i]);
 345                         }
 346                 }
 347
 348                 if (i == NUM_WEP_KEYS) {
 349                         sec.enabled = 0;
 350                         sec.level = SEC_LEVEL_0;
 351                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
 352                 }
 353
 354                 goto done;
 355         }
 356
 357
 358
 359         sec.enabled = 1;
 360         sec.flags |= SEC_ENABLED;
 361
 362         if (*crypt != NULL && (*crypt)->ops != NULL &&
 363             strcmp((*crypt)->ops->name, "R-WEP") != 0) {
 364                 /* changing to use WEP; deinit previously used algorithm
 365                  * on this key
 366                  */
 367                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 368         }
 369
 370         if (*crypt == NULL) {
 371                 struct lib80211_crypt_data *new_crypt;
 372
 373                 /* take WEP into use */
 374                 new_crypt = kzalloc(sizeof(struct lib80211_crypt_data),
 375                                     GFP_KERNEL);
 376                 if (new_crypt == NULL)
 377                         return -ENOMEM;
 378                 new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 379                 if (!new_crypt->ops) {
 380                         request_module("rtllib_crypt_wep");
 381                         new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 382                 }
 383
 384                 if (new_crypt->ops)
 385                         new_crypt->priv = new_crypt->ops->init(key);
 386
 387                 if (!new_crypt->ops || !new_crypt->priv) {
 388                         kfree(new_crypt);
 389                         new_crypt = NULL;
 390
 391                         netdev_warn(dev,
 392                                     "%s: could not initialize WEP: load module rtllib_crypt_wep\n",
 393                                     dev->name);
 394                         return -EOPNOTSUPP;
 395                 }
 396                 *crypt = new_crypt;
 397         }
 398
 399         /* If a new key was provided, set it up */
 400         if (erq->length > 0) {
 401                 len = erq->length <= 5 ? 5 : 13;
 402                 memcpy(sec.keys[key], keybuf, erq->length);
 403                 if (len > erq->length)
 404                         memset(sec.keys[key] + erq->length, 0,
 405                                len - erq->length);
 406                 netdev_dbg(ieee->dev, "Setting key %d to '%s' (%d:%d bytes)\n",
 407                            key, escape_essid(sec.keys[key], len), erq->length,
 408                            len);
 409                 sec.key_sizes[key] = len;
 410                 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
 411                                        (*crypt)->priv);
 412                 sec.flags |= (1 << key);
 413                 /* This ensures a key will be activated if no key is
 414                  * explicitly set
 415                  */
 416                 if (key == sec.active_key)
 417                         sec.flags |= SEC_ACTIVE_KEY;
 418                 ieee->crypt_info.tx_keyidx = key;
 419
 420         } else {
 421                 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
 422                                              NULL, (*crypt)->priv);
 423                 if (len == 0) {
 424                         /* Set a default key of all 0 */
 425                         netdev_info(ieee->dev, "Setting key %d to all zero.\n",
 426                                            key);
 427
 428                         memset(sec.keys[key], 0, 13);
 429                         (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
 430                                                (*crypt)->priv);
 431                         sec.key_sizes[key] = 13;
 432                         sec.flags |= (1 << key);
 433                 }
 434
 435                 /* No key data - just set the default TX key index */
 436                 if (key_provided) {
 437                         netdev_dbg(ieee->dev,
 438                                    "Setting key %d as default Tx key.\n", key);
 439                         ieee->crypt_info.tx_keyidx = key;
 440                         sec.active_key = key;
 441                         sec.flags |= SEC_ACTIVE_KEY;
 442                 }
 443         }
 444  done:
 445         ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
 446         ieee->auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
 447                           WLAN_AUTH_SHARED_KEY;
 448         sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
 449         sec.flags |= SEC_AUTH_MODE;
 450         netdev_dbg(ieee->dev, "Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
 451                            "OPEN" : "SHARED KEY");
 452
 453         /* For now we just support WEP, so only set that security level...
 454          * TODO: When WPA is added this is one place that needs to change
 455          */
 456         sec.flags |= SEC_LEVEL;
 457         sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
 458
 459         if (ieee->set_security)
 460                 ieee->set_security(dev, &sec);
 461
 462         /* Do not reset port if card is in Managed mode since resetting will
 463          * generate new IEEE 802.11 authentication which may end up in looping
 464          * with IEEE 802.1X.  If your hardware requires a reset after WEP
 465          * configuration (for example... Prism2), implement the reset_port in
 466          * the callbacks structures used to initialize the 802.11 stack.
 467          */
 468         if (ieee->reset_on_keychange &&
 469             ieee->iw_mode != IW_MODE_INFRA &&
 470             ieee->reset_port && ieee->reset_port(dev)) {
 471                 netdev_dbg(dev, "%s: reset_port failed\n", dev->name);
 472                 return -EINVAL;
 473         }
 474         return 0;
 475 }
 476 EXPORT_SYMBOL(rtllib_wx_set_encode);
 477
 478 int rtllib_wx_get_encode(struct rtllib_device *ieee,
 479                             struct iw_request_info *info,
 480                             union iwreq_data *wrqu, char *keybuf)
 481 {
 482         struct iw_point *erq = &(wrqu->encoding);
 483         int len, key;
 484         struct lib80211_crypt_data *crypt;
 485
 486         netdev_dbg(ieee->dev, "%s()\n", __func__);
 487
 488         if (ieee->iw_mode == IW_MODE_MONITOR)
 489                 return -1;
 490
 491         key = erq->flags & IW_ENCODE_INDEX;
 492         if (key) {
 493                 if (key > NUM_WEP_KEYS)
 494                         return -EINVAL;
 495                 key--;
 496         } else {
 497                 key = ieee->crypt_info.tx_keyidx;
 498         }
 499         crypt = ieee->crypt_info.crypt[key];
 500
 501         erq->flags = key + 1;
 502
 503         if (crypt == NULL || crypt->ops == NULL) {
 504                 erq->length = 0;
 505                 erq->flags |= IW_ENCODE_DISABLED;
 506                 return 0;
 507         }
 508         len = crypt->ops->get_key(keybuf, SCM_KEY_LEN, NULL, crypt->priv);
 509
 510         erq->length = max(len, 0);
 511
 512         erq->flags |= IW_ENCODE_ENABLED;
 513
 514         if (ieee->open_wep)
 515                 erq->flags |= IW_ENCODE_OPEN;
 516         else
 517                 erq->flags |= IW_ENCODE_RESTRICTED;
 518
 519         return 0;
 520 }
 521 EXPORT_SYMBOL(rtllib_wx_get_encode);
 522
 523 int rtllib_wx_set_encode_ext(struct rtllib_device *ieee,
 524                                struct iw_request_info *info,
 525                                union iwreq_data *wrqu, char *extra)
 526 {
 527         int ret = 0;
 528         struct net_device *dev = ieee->dev;
 529         struct iw_point *encoding = &wrqu->encoding;
 530         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
 531         int i, idx;
 532         int group_key = 0;
 533         const char *alg, *module;
 534         struct lib80211_crypto_ops *ops;
 535         struct lib80211_crypt_data **crypt;
 536
 537         struct rtllib_security sec = {
 538                 .flags = 0,
 539         };
 540         idx = encoding->flags & IW_ENCODE_INDEX;
 541         if (idx) {
 542                 if (idx < 1 || idx > NUM_WEP_KEYS)
 543                         return -EINVAL;
 544                 idx--;
 545         } else{
 546                         idx = ieee->crypt_info.tx_keyidx;
 547         }
 548         if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
 549                 crypt = &ieee->crypt_info.crypt[idx];
 550                 group_key = 1;
 551         } else {
 552                 /* some Cisco APs use idx>0 for unicast in dynamic WEP */
 553                 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
 554                         return -EINVAL;
 555                 if (ieee->iw_mode == IW_MODE_INFRA)
 556                         crypt = &ieee->crypt_info.crypt[idx];
 557                 else
 558                         return -EINVAL;
 559         }
 560
 561         sec.flags |= SEC_ENABLED;
 562         if ((encoding->flags & IW_ENCODE_DISABLED) ||
 563             ext->alg == IW_ENCODE_ALG_NONE) {
 564                 if (*crypt)
 565                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 566
 567                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 568                         if (ieee->crypt_info.crypt[i] != NULL)
 569                                 break;
 570                 }
 571                 if (i == NUM_WEP_KEYS) {
 572                         sec.enabled = 0;
 573                         sec.level = SEC_LEVEL_0;
 574                         sec.flags |= SEC_LEVEL;
 575                 }
 576                 goto done;
 577         }
 578
 579         sec.enabled = 1;
 580         switch (ext->alg) {
 581         case IW_ENCODE_ALG_WEP:
 582                 alg = "R-WEP";
 583                 module = "rtllib_crypt_wep";
 584                 break;
 585         case IW_ENCODE_ALG_TKIP:
 586                 alg = "R-TKIP";
 587                 module = "rtllib_crypt_tkip";
 588                 break;
 589         case IW_ENCODE_ALG_CCMP:
 590                 alg = "R-CCMP";
 591                 module = "rtllib_crypt_ccmp";
 592                 break;
 593         default:
 594                 netdev_dbg(ieee->dev, "Unknown crypto alg %d\n", ext->alg);
 595                 ret = -EINVAL;
 596                 goto done;
 597         }
 598         netdev_dbg(dev, "alg name:%s\n", alg);
 599
 600         ops = lib80211_get_crypto_ops(alg);
 601         if (ops == NULL) {
 602                 char tempbuf[100];
 603
 604                 memset(tempbuf, 0x00, 100);
 605                 sprintf(tempbuf, "%s", module);
 606                 request_module("%s", tempbuf);
 607                 ops = lib80211_get_crypto_ops(alg);
 608         }
 609         if (ops == NULL) {
 610                 netdev_info(dev, "========>unknown crypto alg %d\n", ext->alg);
 611                 ret = -EINVAL;
 612                 goto done;
 613         }
 614
 615         if (*crypt == NULL || (*crypt)->ops != ops) {
 616                 struct lib80211_crypt_data *new_crypt;
 617
 618                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 619
 620                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
 621                 if (new_crypt == NULL) {
 622                         ret = -ENOMEM;
 623                         goto done;
 624                 }
 625                 new_crypt->ops = ops;
 626                 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
 627                         new_crypt->priv = new_crypt->ops->init(idx);
 628
 629                 if (new_crypt->priv == NULL) {
 630                         kfree(new_crypt);
 631                         ret = -EINVAL;
 632                         goto done;
 633                 }
 634                 *crypt = new_crypt;
 635
 636         }
 637
 638         if (ext->key_len > 0 && (*crypt)->ops->set_key &&
 639             (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
 640                                    (*crypt)->priv) < 0) {
 641                 netdev_info(dev, "key setting failed\n");
 642                 ret = -EINVAL;
 643                 goto done;
 644         }
 645         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
 646                 ieee->crypt_info.tx_keyidx = idx;
 647                 sec.active_key = idx;
 648                 sec.flags |= SEC_ACTIVE_KEY;
 649         }
 650         if (ext->alg != IW_ENCODE_ALG_NONE) {
 651                 sec.key_sizes[idx] = ext->key_len;
 652                 sec.flags |= (1 << idx);
 653                 if (ext->alg == IW_ENCODE_ALG_WEP) {
 654                         sec.flags |= SEC_LEVEL;
 655                         sec.level = SEC_LEVEL_1;
 656                 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
 657                         sec.flags |= SEC_LEVEL;
 658                         sec.level = SEC_LEVEL_2;
 659                 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
 660                         sec.flags |= SEC_LEVEL;
 661                         sec.level = SEC_LEVEL_3;
 662                 }
 663                 /* Don't set sec level for group keys. */
 664                 if (group_key)
 665                         sec.flags &= ~SEC_LEVEL;
 666         }
 667 done:
 668         if (ieee->set_security)
 669                 ieee->set_security(ieee->dev, &sec);
 670
 671         if (ieee->reset_on_keychange &&
 672             ieee->iw_mode != IW_MODE_INFRA &&
 673             ieee->reset_port && ieee->reset_port(dev)) {
 674                 netdev_dbg(ieee->dev, "Port reset failed\n");
 675                 return -EINVAL;
 676         }
 677         return ret;
 678 }
 679 EXPORT_SYMBOL(rtllib_wx_set_encode_ext);
 680
 681 int rtllib_wx_set_mlme(struct rtllib_device *ieee,
 682                                struct iw_request_info *info,
 683                                union iwreq_data *wrqu, char *extra)
 684 {
 685         u8 i = 0;
 686         bool deauth = false;
 687         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 688
 689         if (ieee->state != RTLLIB_LINKED)
 690                 return -ENOLINK;
 691
 692         mutex_lock(&ieee->wx_mutex);
 693
 694         switch (mlme->cmd) {
 695         case IW_MLME_DEAUTH:
 696                 deauth = true;
 697                 /* leave break out intentionly */
 698
 699         case IW_MLME_DISASSOC:
 700                 if (deauth)
 701                         netdev_info(ieee->dev, "disauth packet !\n");
 702                 else
 703                         netdev_info(ieee->dev, "dis associate packet!\n");
 704
 705                 ieee->cannot_notify = true;
 706
 707                 SendDisassociation(ieee, deauth, mlme->reason_code);
 708                 rtllib_disassociate(ieee);
 709
 710                 ieee->wap_set = 0;
 711                 for (i = 0; i < 6; i++)
 712                         ieee->current_network.bssid[i] = 0x55;
 713
 714                 ieee->ssid_set = 0;
 715                 ieee->current_network.ssid[0] = '\0';
 716                 ieee->current_network.ssid_len = 0;
 717                 break;
 718         default:
 719                 mutex_unlock(&ieee->wx_mutex);
 720                 return -EOPNOTSUPP;
 721         }
 722
 723         mutex_unlock(&ieee->wx_mutex);
 724
 725         return 0;
 726 }
 727 EXPORT_SYMBOL(rtllib_wx_set_mlme);
 728
 729 int rtllib_wx_set_auth(struct rtllib_device *ieee,
 730                                struct iw_request_info *info,
 731                                struct iw_param *data, char *extra)
 732 {
 733         switch (data->flags & IW_AUTH_INDEX) {
 734         case IW_AUTH_WPA_VERSION:
 735                 break;
 736         case IW_AUTH_CIPHER_PAIRWISE:
 737         case IW_AUTH_CIPHER_GROUP:
 738         case IW_AUTH_KEY_MGMT:
 739                 /* Host AP driver does not use these parameters and allows
 740                  * wpa_supplicant to control them internally.
 741                  */
 742                 break;
 743         case IW_AUTH_TKIP_COUNTERMEASURES:
 744                 ieee->tkip_countermeasures = data->value;
 745                 break;
 746         case IW_AUTH_DROP_UNENCRYPTED:
 747                 ieee->drop_unencrypted = data->value;
 748                 break;
 749
 750         case IW_AUTH_80211_AUTH_ALG:
 751                 if (data->value & IW_AUTH_ALG_SHARED_KEY) {
 752                         ieee->open_wep = 0;
 753                         ieee->auth_mode = 1;
 754                 } else if (data->value & IW_AUTH_ALG_OPEN_SYSTEM) {
 755                         ieee->open_wep = 1;
 756                         ieee->auth_mode = 0;
 757                 } else if (data->value & IW_AUTH_ALG_LEAP) {
 758                         ieee->open_wep = 1;
 759                         ieee->auth_mode = 2;
 760                 } else
 761                         return -EINVAL;
 762                 break;
 763
 764         case IW_AUTH_WPA_ENABLED:
 765                 ieee->wpa_enabled = (data->value) ? 1 : 0;
 766                 break;
 767
 768         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 769                 ieee->ieee802_1x = data->value;
 770                 break;
 771         case IW_AUTH_PRIVACY_INVOKED:
 772                 ieee->privacy_invoked = data->value;
 773                 break;
 774         default:
 775                 return -EOPNOTSUPP;
 776         }
 777         return 0;
 778 }
 779 EXPORT_SYMBOL(rtllib_wx_set_auth);
 780
 781 int rtllib_wx_set_gen_ie(struct rtllib_device *ieee, u8 *ie, size_t len)
 782 {
 783         u8 *buf;
 784         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 785
 786         if (len > MAX_WPA_IE_LEN || (len && ie == NULL))
 787                 return -EINVAL;
 788
 789         if (len) {
 790                 eid = ie[0];
 791                 if ((eid == MFIE_TYPE_GENERIC) && (!memcmp(&ie[2],
 792                      wps_oui, 4))) {
 793
 794                         ieee->wps_ie_len = min_t(size_t, len, MAX_WZC_IE_LEN);
 795                         buf = kmemdup(ie, ieee->wps_ie_len, GFP_KERNEL);
 796                         if (buf == NULL)
 797                                 return -ENOMEM;
 798                         ieee->wps_ie = buf;
 799                         return 0;
 800                 }
 801         }
 802         ieee->wps_ie_len = 0;
 803         kfree(ieee->wps_ie);
 804         ieee->wps_ie = NULL;
 805         if (len) {
 806                 if (len != ie[1]+2)
 807                         return -EINVAL;
 808                 buf = kmemdup(ie, len, GFP_KERNEL);
 809                 if (buf == NULL)
 810                         return -ENOMEM;
 811                 kfree(ieee->wpa_ie);
 812                 ieee->wpa_ie = buf;
 813                 ieee->wpa_ie_len = len;
 814         } else {
 815                 kfree(ieee->wpa_ie);
 816                 ieee->wpa_ie = NULL;
 817                 ieee->wpa_ie_len = 0;
 818         }
 819         return 0;
 820 }
 821 EXPORT_SYMBOL(rtllib_wx_set_gen_ie);