drivers/staging/rtl8192e/rtllib_wx.c

   1 // SPDX-License-Identifier: GPL-2.0
   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  * Contact Information:
  12  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  13  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  14  */
  15 #include <linux/wireless.h>
  16 #include <linux/kmod.h>
  17 #include <linux/module.h>
  18 #include <linux/etherdevice.h>
  19 #include "rtllib.h"
  20 struct modes_unit {
  21         char *mode_string;
  22         int mode_size;
  23 };
  24 static struct modes_unit rtllib_modes[] = {
  25         {"a", 1},
  26         {"b", 1},
  27         {"g", 1},
  28         {"?", 1},
  29         {"N-24G", 5},
  30         {"N-5G", 4},
  31 };
  32
  33 #define MAX_CUSTOM_LEN 64
  34 static inline char *rtl819x_translate_scan(struct rtllib_device *ieee,
  35                                            char *start, char *stop,
  36                                            struct rtllib_network *network,
  37                                            struct iw_request_info *info)
  38 {
  39         char custom[MAX_CUSTOM_LEN];
  40         char proto_name[IFNAMSIZ];
  41         char *pname = proto_name;
  42         char *p;
  43         struct iw_event iwe;
  44         int i, j;
  45         u16 max_rate, rate;
  46         static u8       EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};
  47
  48         /* First entry *MUST* be the AP MAC address */
  49         iwe.cmd = SIOCGIWAP;
  50         iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
  51         ether_addr_copy(iwe.u.ap_addr.sa_data, network->bssid);
  52         start = iwe_stream_add_event_rsl(info, start, stop,
  53                                          &iwe, IW_EV_ADDR_LEN);
  54         /* Remaining entries will be displayed in the order we provide them */
  55
  56         /* Add the ESSID */
  57         iwe.cmd = SIOCGIWESSID;
  58         iwe.u.data.flags = 1;
  59         if (network->ssid_len > 0) {
  60                 iwe.u.data.length = min_t(u8, network->ssid_len, 32);
  61                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe,
  62                                                  network->ssid);
  63         } else if (network->hidden_ssid_len == 0) {
  64                 iwe.u.data.length = sizeof("<hidden>");
  65                 start = iwe_stream_add_point_rsl(info, start, stop,
  66                                                  &iwe, "<hidden>");
  67         } else {
  68                 iwe.u.data.length = min_t(u8, network->hidden_ssid_len, 32);
  69                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe,
  70                                                  network->hidden_ssid);
  71         }
  72         /* Add the protocol name */
  73         iwe.cmd = SIOCGIWNAME;
  74         for (i = 0; i < ARRAY_SIZE(rtllib_modes); i++) {
  75                 if (network->mode&(1<<i)) {
  76                         sprintf(pname, rtllib_modes[i].mode_string,
  77                                 rtllib_modes[i].mode_size);
  78                         pname += rtllib_modes[i].mode_size;
  79                 }
  80         }
  81         *pname = '\0';
  82         snprintf(iwe.u.name, IFNAMSIZ, "IEEE802.11%s", proto_name);
  83         start = iwe_stream_add_event_rsl(info, start, stop,
  84                                          &iwe, IW_EV_CHAR_LEN);
  85         /* Add mode */
  86         iwe.cmd = SIOCGIWMODE;
  87         if (network->capability &
  88             (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
  89                 if (network->capability & WLAN_CAPABILITY_ESS)
  90                         iwe.u.mode = IW_MODE_MASTER;
  91                 else
  92                         iwe.u.mode = IW_MODE_ADHOC;
  93                 start = iwe_stream_add_event_rsl(info, start, stop,
  94                                                  &iwe, IW_EV_UINT_LEN);
  95         }
  96
  97         /* Add frequency/channel */
  98         iwe.cmd = SIOCGIWFREQ;
  99         iwe.u.freq.m = network->channel;
 100         iwe.u.freq.e = 0;
 101         iwe.u.freq.i = 0;
 102         start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 103                                          IW_EV_FREQ_LEN);
 104
 105         /* Add encryption capability */
 106         iwe.cmd = SIOCGIWENCODE;
 107         if (network->capability & WLAN_CAPABILITY_PRIVACY)
 108                 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 109         else
 110                 iwe.u.data.flags = IW_ENCODE_DISABLED;
 111         iwe.u.data.length = 0;
 112         start = iwe_stream_add_point_rsl(info, start, stop,
 113                                          &iwe, network->ssid);
 114         /* Add basic and extended rates */
 115         max_rate = 0;
 116         p = custom;
 117         p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
 118         for (i = 0, j = 0; i < network->rates_len;) {
 119                 if (j < network->rates_ex_len &&
 120                     ((network->rates_ex[j] & 0x7F) <
 121                      (network->rates[i] & 0x7F)))
 122                         rate = network->rates_ex[j++] & 0x7F;
 123                 else
 124                         rate = network->rates[i++] & 0x7F;
 125                 if (rate > max_rate)
 126                         max_rate = rate;
 127                 p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
 128                               "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 129         }
 130         for (; j < network->rates_ex_len; j++) {
 131                 rate = network->rates_ex[j] & 0x7F;
 132                 p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
 133                               "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 134                 if (rate > max_rate)
 135                         max_rate = rate;
 136         }
 137
 138         if (network->mode >= IEEE_N_24G) {
 139                 struct ht_capab_ele *ht_cap = NULL;
 140                 bool is40M = false, isShortGI = false;
 141                 u8 max_mcs = 0;
 142
 143                 if (!memcmp(network->bssht.bdHTCapBuf, EWC11NHTCap, 4))
 144                         ht_cap = (struct ht_capab_ele *)
 145                                  &network->bssht.bdHTCapBuf[4];
 146                 else
 147                         ht_cap = (struct ht_capab_ele *)
 148                                  &network->bssht.bdHTCapBuf[0];
 149                 is40M = (ht_cap->ChlWidth) ? 1 : 0;
 150                 isShortGI = (ht_cap->ChlWidth) ?
 151                                 ((ht_cap->ShortGI40Mhz) ? 1 : 0) :
 152                                 ((ht_cap->ShortGI20Mhz) ? 1 : 0);
 153
 154                 max_mcs = HTGetHighestMCSRate(ieee, ht_cap->MCS,
 155                                               MCS_FILTER_ALL);
 156                 rate = MCS_DATA_RATE[is40M][isShortGI][max_mcs & 0x7f];
 157                 if (rate > max_rate)
 158                         max_rate = rate;
 159         }
 160         iwe.cmd = SIOCGIWRATE;
 161         iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
 162         iwe.u.bitrate.value = max_rate * 500000;
 163         start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 164                                      IW_EV_PARAM_LEN);
 165         iwe.cmd = IWEVCUSTOM;
 166         iwe.u.data.length = p - custom;
 167         if (iwe.u.data.length)
 168                 start = iwe_stream_add_point_rsl(info, start, stop,
 169                                                  &iwe, custom);
 170         /* Add quality statistics */
 171         /* TODO: Fix these values... */
 172         iwe.cmd = IWEVQUAL;
 173         iwe.u.qual.qual = network->stats.signal;
 174         iwe.u.qual.level = network->stats.rssi;
 175         iwe.u.qual.noise = network->stats.noise;
 176         iwe.u.qual.updated = network->stats.mask & RTLLIB_STATMASK_WEMASK;
 177         if (!(network->stats.mask & RTLLIB_STATMASK_RSSI))
 178                 iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
 179         if (!(network->stats.mask & RTLLIB_STATMASK_NOISE))
 180                 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
 181         if (!(network->stats.mask & RTLLIB_STATMASK_SIGNAL))
 182                 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
 183         iwe.u.qual.updated = 7;
 184         start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 185                                          IW_EV_QUAL_LEN);
 186
 187         iwe.cmd = IWEVCUSTOM;
 188         p = custom;
 189         iwe.u.data.length = p - custom;
 190         if (iwe.u.data.length)
 191                 start = iwe_stream_add_point_rsl(info, start, stop,
 192                                                  &iwe, custom);
 193
 194         memset(&iwe, 0, sizeof(iwe));
 195         if (network->wpa_ie_len) {
 196                 char buf[MAX_WPA_IE_LEN];
 197
 198                 memcpy(buf, network->wpa_ie, network->wpa_ie_len);
 199                 iwe.cmd = IWEVGENIE;
 200                 iwe.u.data.length = network->wpa_ie_len;
 201                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 202         }
 203         memset(&iwe, 0, sizeof(iwe));
 204         if (network->rsn_ie_len) {
 205                 char buf[MAX_WPA_IE_LEN];
 206
 207                 memcpy(buf, network->rsn_ie, network->rsn_ie_len);
 208                 iwe.cmd = IWEVGENIE;
 209                 iwe.u.data.length = network->rsn_ie_len;
 210                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 211         }
 212
 213         /* add info for WZC */
 214         memset(&iwe, 0, sizeof(iwe));
 215         if (network->wzc_ie_len) {
 216                 char buf[MAX_WZC_IE_LEN];
 217
 218                 memcpy(buf, network->wzc_ie, network->wzc_ie_len);
 219                 iwe.cmd = IWEVGENIE;
 220                 iwe.u.data.length = network->wzc_ie_len;
 221                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 222         }
 223
 224         /* Add EXTRA: Age to display seconds since last beacon/probe response
 225          * for given network.
 226          */
 227         iwe.cmd = IWEVCUSTOM;
 228         p = custom;
 229         p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
 230                       " Last beacon: %lums ago",
 231                       (jiffies - network->last_scanned) / (HZ / 100));
 232         iwe.u.data.length = p - custom;
 233         if (iwe.u.data.length)
 234                 start = iwe_stream_add_point_rsl(info, start, stop,
 235                                                  &iwe, custom);
 236
 237         return start;
 238 }
 239
 240 int rtllib_wx_get_scan(struct rtllib_device *ieee,
 241                           struct iw_request_info *info,
 242                           union iwreq_data *wrqu, char *extra)
 243 {
 244         struct rtllib_network *network;
 245         unsigned long flags;
 246
 247         char *ev = extra;
 248         char *stop = ev + wrqu->data.length;
 249         int i = 0;
 250         int err = 0;
 251
 252         netdev_dbg(ieee->dev, "Getting scan\n");
 253         mutex_lock(&ieee->wx_mutex);
 254         spin_lock_irqsave(&ieee->lock, flags);
 255
 256         list_for_each_entry(network, &ieee->network_list, list) {
 257                 i++;
 258                 if ((stop - ev) < 200) {
 259                         err = -E2BIG;
 260                         break;
 261                 }
 262                 if (ieee->scan_age == 0 ||
 263                     time_after(network->last_scanned + ieee->scan_age, jiffies))
 264                         ev = rtl819x_translate_scan(ieee, ev, stop, network,
 265                                                     info);
 266                 else
 267                         netdev_dbg(ieee->dev,
 268                                    "Network '%s ( %pM)' hidden due to age (%lums).\n",
 269                                    escape_essid(network->ssid,
 270                                                 network->ssid_len),
 271                                    network->bssid,
 272                                    (jiffies - network->last_scanned) /
 273                                    (HZ / 100));
 274         }
 275
 276         spin_unlock_irqrestore(&ieee->lock, flags);
 277         mutex_unlock(&ieee->wx_mutex);
 278         wrqu->data.length = ev -  extra;
 279         wrqu->data.flags = 0;
 280
 281         netdev_dbg(ieee->dev, "%s(): %d networks returned.\n", __func__, i);
 282
 283         return err;
 284 }
 285 EXPORT_SYMBOL(rtllib_wx_get_scan);
 286
 287 int rtllib_wx_set_encode(struct rtllib_device *ieee,
 288                             struct iw_request_info *info,
 289                             union iwreq_data *wrqu, char *keybuf)
 290 {
 291         struct iw_point *erq = &(wrqu->encoding);
 292         struct net_device *dev = ieee->dev;
 293         struct rtllib_security sec = {
 294                 .flags = 0
 295         };
 296         int i, key, key_provided, len;
 297         struct lib80211_crypt_data **crypt;
 298
 299         netdev_dbg(ieee->dev, "%s()\n", __func__);
 300
 301         key = erq->flags & IW_ENCODE_INDEX;
 302         if (key) {
 303                 if (key > NUM_WEP_KEYS)
 304                         return -EINVAL;
 305                 key--;
 306                 key_provided = 1;
 307         } else {
 308                 key_provided = 0;
 309                 key = ieee->crypt_info.tx_keyidx;
 310         }
 311
 312         netdev_dbg(ieee->dev, "Key: %d [%s]\n", key, key_provided ?
 313                            "provided" : "default");
 314         crypt = &ieee->crypt_info.crypt[key];
 315         if (erq->flags & IW_ENCODE_DISABLED) {
 316                 if (key_provided && *crypt) {
 317                         netdev_dbg(ieee->dev,
 318                                    "Disabling encryption on key %d.\n", key);
 319                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 320                 } else
 321                         netdev_dbg(ieee->dev, "Disabling encryption.\n");
 322
 323                 /* Check all the keys to see if any are still configured,
 324                  * and if no key index was provided, de-init them all
 325                  */
 326                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 327                         if (ieee->crypt_info.crypt[i] != NULL) {
 328                                 if (key_provided)
 329                                         break;
 330                                 lib80211_crypt_delayed_deinit(&ieee->crypt_info,
 331                                                     &ieee->crypt_info.crypt[i]);
 332                         }
 333                 }
 334
 335                 if (i == NUM_WEP_KEYS) {
 336                         sec.enabled = 0;
 337                         sec.level = SEC_LEVEL_0;
 338                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
 339                 }
 340
 341                 goto done;
 342         }
 343
 344         sec.enabled = 1;
 345         sec.flags |= SEC_ENABLED;
 346
 347         if (*crypt != NULL && (*crypt)->ops != NULL &&
 348             strcmp((*crypt)->ops->name, "R-WEP") != 0) {
 349                 /* changing to use WEP; deinit previously used algorithm
 350                  * on this key
 351                  */
 352                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 353         }
 354
 355         if (*crypt == NULL) {
 356                 struct lib80211_crypt_data *new_crypt;
 357
 358                 /* take WEP into use */
 359                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
 360                 if (new_crypt == NULL)
 361                         return -ENOMEM;
 362                 new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 363                 if (!new_crypt->ops) {
 364                         request_module("rtllib_crypt_wep");
 365                         new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 366                 }
 367
 368                 if (new_crypt->ops)
 369                         new_crypt->priv = new_crypt->ops->init(key);
 370
 371                 if (!new_crypt->ops || !new_crypt->priv) {
 372                         kfree(new_crypt);
 373                         new_crypt = NULL;
 374
 375                         netdev_warn(dev,
 376                                     "%s: could not initialize WEP: load module rtllib_crypt_wep\n",
 377                                     dev->name);
 378                         return -EOPNOTSUPP;
 379                 }
 380                 *crypt = new_crypt;
 381         }
 382
 383         /* If a new key was provided, set it up */
 384         if (erq->length > 0) {
 385                 len = erq->length <= 5 ? 5 : 13;
 386                 memcpy(sec.keys[key], keybuf, erq->length);
 387                 if (len > erq->length)
 388                         memset(sec.keys[key] + erq->length, 0,
 389                                len - erq->length);
 390                 netdev_dbg(ieee->dev, "Setting key %d to '%s' (%d:%d bytes)\n",
 391                            key, escape_essid(sec.keys[key], len), erq->length,
 392                            len);
 393                 sec.key_sizes[key] = len;
 394                 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
 395                                        (*crypt)->priv);
 396                 sec.flags |= (1 << key);
 397                 /* This ensures a key will be activated if no key is
 398                  * explicitly set
 399                  */
 400                 if (key == sec.active_key)
 401                         sec.flags |= SEC_ACTIVE_KEY;
 402                 ieee->crypt_info.tx_keyidx = key;
 403
 404         } else {
 405                 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
 406                                              NULL, (*crypt)->priv);
 407                 if (len == 0) {
 408                         /* Set a default key of all 0 */
 409                         netdev_info(ieee->dev, "Setting key %d to all zero.\n",
 410                                            key);
 411
 412                         memset(sec.keys[key], 0, 13);
 413                         (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
 414                                                (*crypt)->priv);
 415                         sec.key_sizes[key] = 13;
 416                         sec.flags |= (1 << key);
 417                 }
 418
 419                 /* No key data - just set the default TX key index */
 420                 if (key_provided) {
 421                         netdev_dbg(ieee->dev,
 422                                    "Setting key %d as default Tx key.\n", key);
 423                         ieee->crypt_info.tx_keyidx = key;
 424                         sec.active_key = key;
 425                         sec.flags |= SEC_ACTIVE_KEY;
 426                 }
 427         }
 428  done:
 429         ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
 430         ieee->auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
 431                           WLAN_AUTH_SHARED_KEY;
 432         sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
 433         sec.flags |= SEC_AUTH_MODE;
 434         netdev_dbg(ieee->dev, "Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
 435                            "OPEN" : "SHARED KEY");
 436
 437         /* For now we just support WEP, so only set that security level...
 438          * TODO: When WPA is added this is one place that needs to change
 439          */
 440         sec.flags |= SEC_LEVEL;
 441         sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
 442
 443         if (ieee->set_security)
 444                 ieee->set_security(dev, &sec);
 445
 446         /* Do not reset port if card is in Managed mode since resetting will
 447          * generate new IEEE 802.11 authentication which may end up in looping
 448          * with IEEE 802.1X.  If your hardware requires a reset after WEP
 449          * configuration (for example... Prism2), implement the reset_port in
 450          * the callbacks structures used to initialize the 802.11 stack.
 451          */
 452         if (ieee->reset_on_keychange &&
 453             ieee->iw_mode != IW_MODE_INFRA &&
 454             ieee->reset_port && ieee->reset_port(dev)) {
 455                 netdev_dbg(dev, "%s: reset_port failed\n", dev->name);
 456                 return -EINVAL;
 457         }
 458         return 0;
 459 }
 460 EXPORT_SYMBOL(rtllib_wx_set_encode);
 461
 462 int rtllib_wx_get_encode(struct rtllib_device *ieee,
 463                             struct iw_request_info *info,
 464                             union iwreq_data *wrqu, char *keybuf)
 465 {
 466         struct iw_point *erq = &(wrqu->encoding);
 467         int len, key;
 468         struct lib80211_crypt_data *crypt;
 469
 470         netdev_dbg(ieee->dev, "%s()\n", __func__);
 471
 472         if (ieee->iw_mode == IW_MODE_MONITOR)
 473                 return -1;
 474
 475         key = erq->flags & IW_ENCODE_INDEX;
 476         if (key) {
 477                 if (key > NUM_WEP_KEYS)
 478                         return -EINVAL;
 479                 key--;
 480         } else {
 481                 key = ieee->crypt_info.tx_keyidx;
 482         }
 483         crypt = ieee->crypt_info.crypt[key];
 484
 485         erq->flags = key + 1;
 486
 487         if (crypt == NULL || crypt->ops == NULL) {
 488                 erq->length = 0;
 489                 erq->flags |= IW_ENCODE_DISABLED;
 490                 return 0;
 491         }
 492         len = crypt->ops->get_key(keybuf, SCM_KEY_LEN, NULL, crypt->priv);
 493
 494         erq->length = max(len, 0);
 495
 496         erq->flags |= IW_ENCODE_ENABLED;
 497
 498         if (ieee->open_wep)
 499                 erq->flags |= IW_ENCODE_OPEN;
 500         else
 501                 erq->flags |= IW_ENCODE_RESTRICTED;
 502
 503         return 0;
 504 }
 505 EXPORT_SYMBOL(rtllib_wx_get_encode);
 506
 507 int rtllib_wx_set_encode_ext(struct rtllib_device *ieee,
 508                                struct iw_request_info *info,
 509                                union iwreq_data *wrqu, char *extra)
 510 {
 511         int ret = 0;
 512         struct net_device *dev = ieee->dev;
 513         struct iw_point *encoding = &wrqu->encoding;
 514         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
 515         int i, idx;
 516         int group_key = 0;
 517         const char *alg, *module;
 518         struct lib80211_crypto_ops *ops;
 519         struct lib80211_crypt_data **crypt;
 520
 521         struct rtllib_security sec = {
 522                 .flags = 0,
 523         };
 524         idx = encoding->flags & IW_ENCODE_INDEX;
 525         if (idx) {
 526                 if (idx < 1 || idx > NUM_WEP_KEYS)
 527                         return -EINVAL;
 528                 idx--;
 529         } else {
 530                 idx = ieee->crypt_info.tx_keyidx;
 531         }
 532         if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
 533                 crypt = &ieee->crypt_info.crypt[idx];
 534                 group_key = 1;
 535         } else {
 536                 /* some Cisco APs use idx>0 for unicast in dynamic WEP */
 537                 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
 538                         return -EINVAL;
 539                 if (ieee->iw_mode == IW_MODE_INFRA)
 540                         crypt = &ieee->crypt_info.crypt[idx];
 541                 else
 542                         return -EINVAL;
 543         }
 544
 545         sec.flags |= SEC_ENABLED;
 546         if ((encoding->flags & IW_ENCODE_DISABLED) ||
 547             ext->alg == IW_ENCODE_ALG_NONE) {
 548                 if (*crypt)
 549                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 550
 551                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 552                         if (ieee->crypt_info.crypt[i] != NULL)
 553                                 break;
 554                 }
 555                 if (i == NUM_WEP_KEYS) {
 556                         sec.enabled = 0;
 557                         sec.level = SEC_LEVEL_0;
 558                         sec.flags |= SEC_LEVEL;
 559                 }
 560                 goto done;
 561         }
 562
 563         sec.enabled = 1;
 564         switch (ext->alg) {
 565         case IW_ENCODE_ALG_WEP:
 566                 alg = "R-WEP";
 567                 module = "rtllib_crypt_wep";
 568                 break;
 569         case IW_ENCODE_ALG_TKIP:
 570                 alg = "R-TKIP";
 571                 module = "rtllib_crypt_tkip";
 572                 break;
 573         case IW_ENCODE_ALG_CCMP:
 574                 alg = "R-CCMP";
 575                 module = "rtllib_crypt_ccmp";
 576                 break;
 577         default:
 578                 netdev_dbg(ieee->dev, "Unknown crypto alg %d\n", ext->alg);
 579                 ret = -EINVAL;
 580                 goto done;
 581         }
 582         netdev_dbg(dev, "alg name:%s\n", alg);
 583
 584         ops = lib80211_get_crypto_ops(alg);
 585         if (ops == NULL) {
 586                 char tempbuf[100];
 587
 588                 memset(tempbuf, 0x00, 100);
 589                 sprintf(tempbuf, "%s", module);
 590                 request_module("%s", tempbuf);
 591                 ops = lib80211_get_crypto_ops(alg);
 592         }
 593         if (ops == NULL) {
 594                 netdev_info(dev, "========>unknown crypto alg %d\n", ext->alg);
 595                 ret = -EINVAL;
 596                 goto done;
 597         }
 598
 599         if (*crypt == NULL || (*crypt)->ops != ops) {
 600                 struct lib80211_crypt_data *new_crypt;
 601
 602                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 603
 604                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
 605                 if (new_crypt == NULL) {
 606                         ret = -ENOMEM;
 607                         goto done;
 608                 }
 609                 new_crypt->ops = ops;
 610                 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
 611                         new_crypt->priv = new_crypt->ops->init(idx);
 612
 613                 if (new_crypt->priv == NULL) {
 614                         kfree(new_crypt);
 615                         ret = -EINVAL;
 616                         goto done;
 617                 }
 618                 *crypt = new_crypt;
 619
 620         }
 621
 622         if (ext->key_len > 0 && (*crypt)->ops->set_key &&
 623             (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
 624                                    (*crypt)->priv) < 0) {
 625                 netdev_info(dev, "key setting failed\n");
 626                 ret = -EINVAL;
 627                 goto done;
 628         }
 629         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
 630                 ieee->crypt_info.tx_keyidx = idx;
 631                 sec.active_key = idx;
 632                 sec.flags |= SEC_ACTIVE_KEY;
 633         }
 634         if (ext->alg != IW_ENCODE_ALG_NONE) {
 635                 sec.key_sizes[idx] = ext->key_len;
 636                 sec.flags |= (1 << idx);
 637                 if (ext->alg == IW_ENCODE_ALG_WEP) {
 638                         sec.flags |= SEC_LEVEL;
 639                         sec.level = SEC_LEVEL_1;
 640                 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
 641                         sec.flags |= SEC_LEVEL;
 642                         sec.level = SEC_LEVEL_2;
 643                 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
 644                         sec.flags |= SEC_LEVEL;
 645                         sec.level = SEC_LEVEL_3;
 646                 }
 647                 /* Don't set sec level for group keys. */
 648                 if (group_key)
 649                         sec.flags &= ~SEC_LEVEL;
 650         }
 651 done:
 652         if (ieee->set_security)
 653                 ieee->set_security(ieee->dev, &sec);
 654
 655         if (ieee->reset_on_keychange &&
 656             ieee->iw_mode != IW_MODE_INFRA &&
 657             ieee->reset_port && ieee->reset_port(dev)) {
 658                 netdev_dbg(ieee->dev, "Port reset failed\n");
 659                 return -EINVAL;
 660         }
 661         return ret;
 662 }
 663 EXPORT_SYMBOL(rtllib_wx_set_encode_ext);
 664
 665 int rtllib_wx_set_mlme(struct rtllib_device *ieee,
 666                                struct iw_request_info *info,
 667                                union iwreq_data *wrqu, char *extra)
 668 {
 669         u8 i = 0;
 670         bool deauth = false;
 671         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 672
 673         if (ieee->state != RTLLIB_LINKED)
 674                 return -ENOLINK;
 675
 676         mutex_lock(&ieee->wx_mutex);
 677
 678         switch (mlme->cmd) {
 679         case IW_MLME_DEAUTH:
 680                 deauth = true;
 681                 fallthrough;
 682         case IW_MLME_DISASSOC:
 683                 if (deauth)
 684                         netdev_info(ieee->dev, "disauth packet !\n");
 685                 else
 686                         netdev_info(ieee->dev, "dis associate packet!\n");
 687
 688                 ieee->cannot_notify = true;
 689
 690                 SendDisassociation(ieee, deauth, mlme->reason_code);
 691                 rtllib_disassociate(ieee);
 692
 693                 ieee->wap_set = 0;
 694                 for (i = 0; i < 6; i++)
 695                         ieee->current_network.bssid[i] = 0x55;
 696
 697                 ieee->ssid_set = 0;
 698                 ieee->current_network.ssid[0] = '\0';
 699                 ieee->current_network.ssid_len = 0;
 700                 break;
 701         default:
 702                 mutex_unlock(&ieee->wx_mutex);
 703                 return -EOPNOTSUPP;
 704         }
 705
 706         mutex_unlock(&ieee->wx_mutex);
 707
 708         return 0;
 709 }
 710 EXPORT_SYMBOL(rtllib_wx_set_mlme);
 711
 712 int rtllib_wx_set_auth(struct rtllib_device *ieee,
 713                                struct iw_request_info *info,
 714                                struct iw_param *data, char *extra)
 715 {
 716         switch (data->flags & IW_AUTH_INDEX) {
 717         case IW_AUTH_WPA_VERSION:
 718                 break;
 719         case IW_AUTH_CIPHER_PAIRWISE:
 720         case IW_AUTH_CIPHER_GROUP:
 721         case IW_AUTH_KEY_MGMT:
 722                 /* Host AP driver does not use these parameters and allows
 723                  * wpa_supplicant to control them internally.
 724                  */
 725                 break;
 726         case IW_AUTH_TKIP_COUNTERMEASURES:
 727                 ieee->tkip_countermeasures = data->value;
 728                 break;
 729         case IW_AUTH_DROP_UNENCRYPTED:
 730                 ieee->drop_unencrypted = data->value;
 731                 break;
 732
 733         case IW_AUTH_80211_AUTH_ALG:
 734                 if (data->value & IW_AUTH_ALG_SHARED_KEY) {
 735                         ieee->open_wep = 0;
 736                         ieee->auth_mode = 1;
 737                 } else if (data->value & IW_AUTH_ALG_OPEN_SYSTEM) {
 738                         ieee->open_wep = 1;
 739                         ieee->auth_mode = 0;
 740                 } else if (data->value & IW_AUTH_ALG_LEAP) {
 741                         ieee->open_wep = 1;
 742                         ieee->auth_mode = 2;
 743                 } else
 744                         return -EINVAL;
 745                 break;
 746
 747         case IW_AUTH_WPA_ENABLED:
 748                 ieee->wpa_enabled = (data->value) ? 1 : 0;
 749                 break;
 750
 751         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 752                 ieee->ieee802_1x = data->value;
 753                 break;
 754         case IW_AUTH_PRIVACY_INVOKED:
 755                 ieee->privacy_invoked = data->value;
 756                 break;
 757         default:
 758                 return -EOPNOTSUPP;
 759         }
 760         return 0;
 761 }
 762 EXPORT_SYMBOL(rtllib_wx_set_auth);
 763
 764 int rtllib_wx_set_gen_ie(struct rtllib_device *ieee, u8 *ie, size_t len)
 765 {
 766         u8 *buf;
 767         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 768
 769         if (len > MAX_WPA_IE_LEN || (len && ie == NULL))
 770                 return -EINVAL;
 771
 772         if (len) {
 773                 eid = ie[0];
 774                 if ((eid == MFIE_TYPE_GENERIC) && (!memcmp(&ie[2],
 775                      wps_oui, 4))) {
 776
 777                         ieee->wps_ie_len = min_t(size_t, len, MAX_WZC_IE_LEN);
 778                         buf = kmemdup(ie, ieee->wps_ie_len, GFP_KERNEL);
 779                         if (buf == NULL)
 780                                 return -ENOMEM;
 781                         ieee->wps_ie = buf;
 782                         return 0;
 783                 }
 784         }
 785         ieee->wps_ie_len = 0;
 786         kfree(ieee->wps_ie);
 787         ieee->wps_ie = NULL;
 788         if (len) {
 789                 if (len != ie[1]+2)
 790                         return -EINVAL;
 791                 buf = kmemdup(ie, len, GFP_KERNEL);
 792                 if (buf == NULL)
 793                         return -ENOMEM;
 794                 kfree(ieee->wpa_ie);
 795                 ieee->wpa_ie = buf;
 796                 ieee->wpa_ie_len = len;
 797         } else {
 798                 kfree(ieee->wpa_ie);
 799                 ieee->wpa_ie = NULL;
 800                 ieee->wpa_ie_len = 0;
 801         }
 802         return 0;
 803 }
 804 EXPORT_SYMBOL(rtllib_wx_set_gen_ie);