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.bd_ht_cap_buf, EWC11NHTCap, 4))
 144                         ht_cap = (struct ht_capab_ele *)
 145                                  &network->bssht.bd_ht_cap_buf[4];
 146                 else
 147                         ht_cap = (struct ht_capab_ele *)
 148                                  &network->bssht.bd_ht_cap_buf[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, IW_EV_PARAM_LEN);
 164         iwe.cmd = IWEVCUSTOM;
 165         iwe.u.data.length = p - custom;
 166         if (iwe.u.data.length)
 167                 start = iwe_stream_add_point_rsl(info, start, stop,
 168                                                  &iwe, custom);
 169         /* Add quality statistics */
 170         /* TODO: Fix these values... */
 171         iwe.cmd = IWEVQUAL;
 172         iwe.u.qual.qual = network->stats.signal;
 173         iwe.u.qual.level = network->stats.rssi;
 174         iwe.u.qual.noise = network->stats.noise;
 175         iwe.u.qual.updated = network->stats.mask & RTLLIB_STATMASK_WEMASK;
 176         if (!(network->stats.mask & RTLLIB_STATMASK_RSSI))
 177                 iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
 178         if (!(network->stats.mask & RTLLIB_STATMASK_NOISE))
 179                 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
 180         if (!(network->stats.mask & RTLLIB_STATMASK_SIGNAL))
 181                 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
 182         iwe.u.qual.updated = 7;
 183         start = iwe_stream_add_event_rsl(info, start, stop, &iwe, IW_EV_QUAL_LEN);
 184
 185         iwe.cmd = IWEVCUSTOM;
 186         p = custom;
 187         iwe.u.data.length = p - custom;
 188         if (iwe.u.data.length)
 189                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, custom);
 190
 191         memset(&iwe, 0, sizeof(iwe));
 192         if (network->wpa_ie_len) {
 193                 char buf[MAX_WPA_IE_LEN];
 194
 195                 memcpy(buf, network->wpa_ie, network->wpa_ie_len);
 196                 iwe.cmd = IWEVGENIE;
 197                 iwe.u.data.length = network->wpa_ie_len;
 198                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 199         }
 200         memset(&iwe, 0, sizeof(iwe));
 201         if (network->rsn_ie_len) {
 202                 char buf[MAX_WPA_IE_LEN];
 203
 204                 memcpy(buf, network->rsn_ie, network->rsn_ie_len);
 205                 iwe.cmd = IWEVGENIE;
 206                 iwe.u.data.length = network->rsn_ie_len;
 207                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 208         }
 209
 210         /* add info for WZC */
 211         memset(&iwe, 0, sizeof(iwe));
 212         if (network->wzc_ie_len) {
 213                 char buf[MAX_WZC_IE_LEN];
 214
 215                 memcpy(buf, network->wzc_ie, network->wzc_ie_len);
 216                 iwe.cmd = IWEVGENIE;
 217                 iwe.u.data.length = network->wzc_ie_len;
 218                 start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 219         }
 220
 221         /* Add EXTRA: Age to display seconds since last beacon/probe response
 222          * for given network.
 223          */
 224         iwe.cmd = IWEVCUSTOM;
 225         p = custom;
 226         p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
 227                       " Last beacon: %lums ago",
 228                       (jiffies - network->last_scanned) / (HZ / 100));
 229         iwe.u.data.length = p - custom;
 230         if (iwe.u.data.length)
 231                 start = iwe_stream_add_point_rsl(info, start, stop,
 232                                                  &iwe, custom);
 233
 234         return start;
 235 }
 236
 237 int rtllib_wx_get_scan(struct rtllib_device *ieee,
 238                        struct iw_request_info *info,
 239                        union iwreq_data *wrqu, char *extra)
 240 {
 241         struct rtllib_network *network;
 242         unsigned long flags;
 243
 244         char *ev = extra;
 245         char *stop = ev + wrqu->data.length;
 246         int i = 0;
 247         int err = 0;
 248
 249         netdev_dbg(ieee->dev, "Getting scan\n");
 250         mutex_lock(&ieee->wx_mutex);
 251         spin_lock_irqsave(&ieee->lock, flags);
 252
 253         list_for_each_entry(network, &ieee->network_list, list) {
 254                 i++;
 255                 if ((stop - ev) < 200) {
 256                         err = -E2BIG;
 257                         break;
 258                 }
 259                 if (ieee->scan_age == 0 ||
 260                     time_after(network->last_scanned + ieee->scan_age, jiffies))
 261                         ev = rtl819x_translate_scan(ieee, ev, stop, network,
 262                                                     info);
 263                 else
 264                         netdev_dbg(ieee->dev,
 265                                    "Network '%s ( %pM)' hidden due to age (%lums).\n",
 266                                    escape_essid(network->ssid,
 267                                                 network->ssid_len),
 268                                    network->bssid,
 269                                    (jiffies - network->last_scanned) /
 270                                    (HZ / 100));
 271         }
 272
 273         spin_unlock_irqrestore(&ieee->lock, flags);
 274         mutex_unlock(&ieee->wx_mutex);
 275         wrqu->data.length = ev -  extra;
 276         wrqu->data.flags = 0;
 277
 278         netdev_dbg(ieee->dev, "%s(): %d networks returned.\n", __func__, i);
 279
 280         return err;
 281 }
 282 EXPORT_SYMBOL(rtllib_wx_get_scan);
 283
 284 int rtllib_wx_set_encode(struct rtllib_device *ieee,
 285                          struct iw_request_info *info,
 286                          union iwreq_data *wrqu, char *keybuf)
 287 {
 288         struct iw_point *erq = &(wrqu->encoding);
 289         struct net_device *dev = ieee->dev;
 290         struct rtllib_security sec = {
 291                 .flags = 0
 292         };
 293         int i, key, key_provided, len;
 294         struct lib80211_crypt_data **crypt;
 295
 296         key = erq->flags & IW_ENCODE_INDEX;
 297         if (key) {
 298                 if (key > NUM_WEP_KEYS)
 299                         return -EINVAL;
 300                 key--;
 301                 key_provided = 1;
 302         } else {
 303                 key_provided = 0;
 304                 key = ieee->crypt_info.tx_keyidx;
 305         }
 306
 307         netdev_dbg(ieee->dev, "Key: %d [%s]\n", key, key_provided ?
 308                            "provided" : "default");
 309         crypt = &ieee->crypt_info.crypt[key];
 310         if (erq->flags & IW_ENCODE_DISABLED) {
 311                 if (key_provided && *crypt) {
 312                         netdev_dbg(ieee->dev,
 313                                    "Disabling encryption on key %d.\n", key);
 314                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 315                 } else
 316                         netdev_dbg(ieee->dev, "Disabling encryption.\n");
 317
 318                 /* Check all the keys to see if any are still configured,
 319                  * and if no key index was provided, de-init them all
 320                  */
 321                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 322                         if (ieee->crypt_info.crypt[i]) {
 323                                 if (key_provided)
 324                                         break;
 325                                 lib80211_crypt_delayed_deinit(&ieee->crypt_info,
 326                                                               &ieee->crypt_info.crypt[i]);
 327                         }
 328                 }
 329
 330                 if (i == NUM_WEP_KEYS) {
 331                         sec.enabled = 0;
 332                         sec.level = SEC_LEVEL_0;
 333                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
 334                 }
 335
 336                 goto done;
 337         }
 338
 339         sec.enabled = 1;
 340         sec.flags |= SEC_ENABLED;
 341
 342         if (*crypt && (*crypt)->ops &&
 343             strcmp((*crypt)->ops->name, "R-WEP") != 0) {
 344                 /* changing to use WEP; deinit previously used algorithm
 345                  * on this key
 346                  */
 347                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 348         }
 349
 350         if (!*crypt) {
 351                 struct lib80211_crypt_data *new_crypt;
 352
 353                 /* take WEP into use */
 354                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
 355                 if (!new_crypt)
 356                         return -ENOMEM;
 357                 new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 358                 if (!new_crypt->ops) {
 359                         request_module("rtllib_crypt_wep");
 360                         new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 361                 }
 362
 363                 if (new_crypt->ops)
 364                         new_crypt->priv = new_crypt->ops->init(key);
 365
 366                 if (!new_crypt->ops || !new_crypt->priv) {
 367                         kfree(new_crypt);
 368                         new_crypt = NULL;
 369
 370                         netdev_warn(dev,
 371                                     "%s: could not initialize WEP: load module rtllib_crypt_wep\n",
 372                                     dev->name);
 373                         return -EOPNOTSUPP;
 374                 }
 375                 *crypt = new_crypt;
 376         }
 377
 378         /* If a new key was provided, set it up */
 379         if (erq->length > 0) {
 380                 len = erq->length <= 5 ? 5 : 13;
 381                 memcpy(sec.keys[key], keybuf, erq->length);
 382                 if (len > erq->length)
 383                         memset(sec.keys[key] + erq->length, 0,
 384                                len - erq->length);
 385                 netdev_dbg(ieee->dev, "Setting key %d to '%s' (%d:%d bytes)\n",
 386                            key, escape_essid(sec.keys[key], len), erq->length,
 387                            len);
 388                 sec.key_sizes[key] = len;
 389                 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
 390                                        (*crypt)->priv);
 391                 sec.flags |= (1 << key);
 392                 /* This ensures a key will be activated if no key is
 393                  * explicitly set
 394                  */
 395                 if (key == sec.active_key)
 396                         sec.flags |= SEC_ACTIVE_KEY;
 397                 ieee->crypt_info.tx_keyidx = key;
 398
 399         } else {
 400                 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
 401                                              NULL, (*crypt)->priv);
 402                 if (len == 0) {
 403                         /* Set a default key of all 0 */
 404                         netdev_info(ieee->dev, "Setting key %d to all zero.\n", key);
 405
 406                         memset(sec.keys[key], 0, 13);
 407                         (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
 408                                                (*crypt)->priv);
 409                         sec.key_sizes[key] = 13;
 410                         sec.flags |= (1 << key);
 411                 }
 412
 413                 /* No key data - just set the default TX key index */
 414                 if (key_provided) {
 415                         netdev_dbg(ieee->dev,
 416                                    "Setting key %d as default Tx key.\n", key);
 417                         ieee->crypt_info.tx_keyidx = key;
 418                         sec.active_key = key;
 419                         sec.flags |= SEC_ACTIVE_KEY;
 420                 }
 421         }
 422  done:
 423         ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
 424         ieee->auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
 425                           WLAN_AUTH_SHARED_KEY;
 426         sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
 427         sec.flags |= SEC_AUTH_MODE;
 428         netdev_dbg(ieee->dev, "Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
 429                            "OPEN" : "SHARED KEY");
 430
 431         /* For now we just support WEP, so only set that security level...
 432          * TODO: When WPA is added this is one place that needs to change
 433          */
 434         sec.flags |= SEC_LEVEL;
 435         sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
 436
 437         if (ieee->set_security)
 438                 ieee->set_security(dev, &sec);
 439
 440         /* Do not reset port if card is in Managed mode since resetting will
 441          * generate new IEEE 802.11 authentication which may end up in looping
 442          * with IEEE 802.1X.  If your hardware requires a reset after WEP
 443          * configuration (for example... Prism2), implement the reset_port in
 444          * the callbacks structures used to initialize the 802.11 stack.
 445          */
 446         if (ieee->reset_on_keychange &&
 447             ieee->iw_mode != IW_MODE_INFRA &&
 448             ieee->reset_port && ieee->reset_port(dev)) {
 449                 netdev_dbg(dev, "%s: reset_port failed\n", dev->name);
 450                 return -EINVAL;
 451         }
 452         return 0;
 453 }
 454 EXPORT_SYMBOL(rtllib_wx_set_encode);
 455
 456 int rtllib_wx_get_encode(struct rtllib_device *ieee,
 457                          struct iw_request_info *info,
 458                          union iwreq_data *wrqu, char *keybuf)
 459 {
 460         struct iw_point *erq = &(wrqu->encoding);
 461         int len, key;
 462         struct lib80211_crypt_data *crypt;
 463
 464         if (ieee->iw_mode == IW_MODE_MONITOR)
 465                 return -1;
 466
 467         key = erq->flags & IW_ENCODE_INDEX;
 468         if (key) {
 469                 if (key > NUM_WEP_KEYS)
 470                         return -EINVAL;
 471                 key--;
 472         } else {
 473                 key = ieee->crypt_info.tx_keyidx;
 474         }
 475         crypt = ieee->crypt_info.crypt[key];
 476
 477         erq->flags = key + 1;
 478
 479         if (!crypt || !crypt->ops) {
 480                 erq->length = 0;
 481                 erq->flags |= IW_ENCODE_DISABLED;
 482                 return 0;
 483         }
 484         len = crypt->ops->get_key(keybuf, SCM_KEY_LEN, NULL, crypt->priv);
 485
 486         erq->length = max(len, 0);
 487
 488         erq->flags |= IW_ENCODE_ENABLED;
 489
 490         if (ieee->open_wep)
 491                 erq->flags |= IW_ENCODE_OPEN;
 492         else
 493                 erq->flags |= IW_ENCODE_RESTRICTED;
 494
 495         return 0;
 496 }
 497 EXPORT_SYMBOL(rtllib_wx_get_encode);
 498
 499 int rtllib_wx_set_encode_ext(struct rtllib_device *ieee,
 500                              struct iw_request_info *info,
 501                              union iwreq_data *wrqu, char *extra)
 502 {
 503         int ret = 0;
 504         struct net_device *dev = ieee->dev;
 505         struct iw_point *encoding = &wrqu->encoding;
 506         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
 507         int i, idx;
 508         int group_key = 0;
 509         const char *alg, *module;
 510         struct lib80211_crypto_ops *ops;
 511         struct lib80211_crypt_data **crypt;
 512
 513         struct rtllib_security sec = {
 514                 .flags = 0,
 515         };
 516         idx = encoding->flags & IW_ENCODE_INDEX;
 517         if (idx) {
 518                 if (idx < 1 || idx > NUM_WEP_KEYS)
 519                         return -EINVAL;
 520                 idx--;
 521         } else {
 522                 idx = ieee->crypt_info.tx_keyidx;
 523         }
 524         if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
 525                 crypt = &ieee->crypt_info.crypt[idx];
 526                 group_key = 1;
 527         } else {
 528                 /* some Cisco APs use idx>0 for unicast in dynamic WEP */
 529                 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
 530                         return -EINVAL;
 531                 if (ieee->iw_mode == IW_MODE_INFRA)
 532                         crypt = &ieee->crypt_info.crypt[idx];
 533                 else
 534                         return -EINVAL;
 535         }
 536
 537         sec.flags |= SEC_ENABLED;
 538         if ((encoding->flags & IW_ENCODE_DISABLED) ||
 539             ext->alg == IW_ENCODE_ALG_NONE) {
 540                 if (*crypt)
 541                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 542
 543                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 544                         if (ieee->crypt_info.crypt[i])
 545                                 break;
 546                 }
 547                 if (i == NUM_WEP_KEYS) {
 548                         sec.enabled = 0;
 549                         sec.level = SEC_LEVEL_0;
 550                         sec.flags |= SEC_LEVEL;
 551                 }
 552                 goto done;
 553         }
 554
 555         sec.enabled = 1;
 556         switch (ext->alg) {
 557         case IW_ENCODE_ALG_WEP:
 558                 alg = "R-WEP";
 559                 module = "rtllib_crypt_wep";
 560                 break;
 561         case IW_ENCODE_ALG_TKIP:
 562                 alg = "R-TKIP";
 563                 module = "rtllib_crypt_tkip";
 564                 break;
 565         case IW_ENCODE_ALG_CCMP:
 566                 alg = "R-CCMP";
 567                 module = "rtllib_crypt_ccmp";
 568                 break;
 569         default:
 570                 netdev_dbg(ieee->dev, "Unknown crypto alg %d\n", ext->alg);
 571                 ret = -EINVAL;
 572                 goto done;
 573         }
 574         netdev_dbg(dev, "alg name:%s\n", alg);
 575
 576         ops = lib80211_get_crypto_ops(alg);
 577         if (!ops) {
 578                 char tempbuf[100];
 579
 580                 memset(tempbuf, 0x00, 100);
 581                 sprintf(tempbuf, "%s", module);
 582                 request_module("%s", tempbuf);
 583                 ops = lib80211_get_crypto_ops(alg);
 584         }
 585         if (!ops) {
 586                 netdev_info(dev, "========>unknown crypto alg %d\n", ext->alg);
 587                 ret = -EINVAL;
 588                 goto done;
 589         }
 590
 591         if (!*crypt || (*crypt)->ops != ops) {
 592                 struct lib80211_crypt_data *new_crypt;
 593
 594                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 595
 596                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
 597                 if (!new_crypt) {
 598                         ret = -ENOMEM;
 599                         goto done;
 600                 }
 601                 new_crypt->ops = ops;
 602                 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
 603                         new_crypt->priv = new_crypt->ops->init(idx);
 604
 605                 if (!new_crypt->priv) {
 606                         kfree(new_crypt);
 607                         ret = -EINVAL;
 608                         goto done;
 609                 }
 610                 *crypt = new_crypt;
 611
 612         }
 613
 614         if (ext->key_len > 0 && (*crypt)->ops->set_key &&
 615             (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
 616                                    (*crypt)->priv) < 0) {
 617                 netdev_info(dev, "key setting failed\n");
 618                 ret = -EINVAL;
 619                 goto done;
 620         }
 621         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
 622                 ieee->crypt_info.tx_keyidx = idx;
 623                 sec.active_key = idx;
 624                 sec.flags |= SEC_ACTIVE_KEY;
 625         }
 626         if (ext->alg != IW_ENCODE_ALG_NONE) {
 627                 sec.key_sizes[idx] = ext->key_len;
 628                 sec.flags |= (1 << idx);
 629                 if (ext->alg == IW_ENCODE_ALG_WEP) {
 630                         sec.flags |= SEC_LEVEL;
 631                         sec.level = SEC_LEVEL_1;
 632                 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
 633                         sec.flags |= SEC_LEVEL;
 634                         sec.level = SEC_LEVEL_2;
 635                 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
 636                         sec.flags |= SEC_LEVEL;
 637                         sec.level = SEC_LEVEL_3;
 638                 }
 639                 /* Don't set sec level for group keys. */
 640                 if (group_key)
 641                         sec.flags &= ~SEC_LEVEL;
 642         }
 643 done:
 644         if (ieee->set_security)
 645                 ieee->set_security(ieee->dev, &sec);
 646
 647         if (ieee->reset_on_keychange &&
 648             ieee->iw_mode != IW_MODE_INFRA &&
 649             ieee->reset_port && ieee->reset_port(dev)) {
 650                 netdev_dbg(ieee->dev, "Port reset failed\n");
 651                 return -EINVAL;
 652         }
 653         return ret;
 654 }
 655 EXPORT_SYMBOL(rtllib_wx_set_encode_ext);
 656
 657 int rtllib_wx_set_mlme(struct rtllib_device *ieee,
 658                        struct iw_request_info *info,
 659                        union iwreq_data *wrqu, char *extra)
 660 {
 661         u8 i = 0;
 662         bool deauth = false;
 663         struct iw_mlme *mlme = (struct iw_mlme *) extra;
 664
 665         if (ieee->state != RTLLIB_LINKED)
 666                 return -ENOLINK;
 667
 668         mutex_lock(&ieee->wx_mutex);
 669
 670         switch (mlme->cmd) {
 671         case IW_MLME_DEAUTH:
 672                 deauth = true;
 673                 fallthrough;
 674         case IW_MLME_DISASSOC:
 675                 if (deauth)
 676                         netdev_info(ieee->dev, "disauth packet !\n");
 677                 else
 678                         netdev_info(ieee->dev, "dis associate packet!\n");
 679
 680                 ieee->cannot_notify = true;
 681
 682                 SendDisassociation(ieee, deauth, mlme->reason_code);
 683                 rtllib_disassociate(ieee);
 684
 685                 ieee->wap_set = 0;
 686                 for (i = 0; i < 6; i++)
 687                         ieee->current_network.bssid[i] = 0x55;
 688
 689                 ieee->ssid_set = 0;
 690                 ieee->current_network.ssid[0] = '\0';
 691                 ieee->current_network.ssid_len = 0;
 692                 break;
 693         default:
 694                 mutex_unlock(&ieee->wx_mutex);
 695                 return -EOPNOTSUPP;
 696         }
 697
 698         mutex_unlock(&ieee->wx_mutex);
 699
 700         return 0;
 701 }
 702 EXPORT_SYMBOL(rtllib_wx_set_mlme);
 703
 704 int rtllib_wx_set_auth(struct rtllib_device *ieee,
 705                        struct iw_request_info *info,
 706                        struct iw_param *data, char *extra)
 707 {
 708         switch (data->flags & IW_AUTH_INDEX) {
 709         case IW_AUTH_WPA_VERSION:
 710                 break;
 711         case IW_AUTH_CIPHER_PAIRWISE:
 712         case IW_AUTH_CIPHER_GROUP:
 713         case IW_AUTH_KEY_MGMT:
 714                 /* Host AP driver does not use these parameters and allows
 715                  * wpa_supplicant to control them internally.
 716                  */
 717                 break;
 718         case IW_AUTH_TKIP_COUNTERMEASURES:
 719                 ieee->tkip_countermeasures = data->value;
 720                 break;
 721         case IW_AUTH_DROP_UNENCRYPTED:
 722                 ieee->drop_unencrypted = data->value;
 723                 break;
 724
 725         case IW_AUTH_80211_AUTH_ALG:
 726                 if (data->value & IW_AUTH_ALG_SHARED_KEY) {
 727                         ieee->open_wep = 0;
 728                         ieee->auth_mode = 1;
 729                 } else if (data->value & IW_AUTH_ALG_OPEN_SYSTEM) {
 730                         ieee->open_wep = 1;
 731                         ieee->auth_mode = 0;
 732                 } else if (data->value & IW_AUTH_ALG_LEAP) {
 733                         ieee->open_wep = 1;
 734                         ieee->auth_mode = 2;
 735                 } else
 736                         return -EINVAL;
 737                 break;
 738
 739         case IW_AUTH_WPA_ENABLED:
 740                 ieee->wpa_enabled = (data->value) ? 1 : 0;
 741                 break;
 742
 743         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 744                 ieee->ieee802_1x = data->value;
 745                 break;
 746         case IW_AUTH_PRIVACY_INVOKED:
 747                 ieee->privacy_invoked = data->value;
 748                 break;
 749         default:
 750                 return -EOPNOTSUPP;
 751         }
 752         return 0;
 753 }
 754 EXPORT_SYMBOL(rtllib_wx_set_auth);
 755
 756 int rtllib_wx_set_gen_ie(struct rtllib_device *ieee, u8 *ie, size_t len)
 757 {
 758         u8 *buf;
 759         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 760
 761         if (len > MAX_WPA_IE_LEN || (len && !ie))
 762                 return -EINVAL;
 763
 764         if (len) {
 765                 eid = ie[0];
 766                 if ((eid == MFIE_TYPE_GENERIC) && (!memcmp(&ie[2], wps_oui, 4))) {
 767                         ieee->wps_ie_len = min_t(size_t, len, MAX_WZC_IE_LEN);
 768                         buf = kmemdup(ie, ieee->wps_ie_len, GFP_KERNEL);
 769                         if (!buf)
 770                                 return -ENOMEM;
 771                         ieee->wps_ie = buf;
 772                         return 0;
 773                 }
 774         }
 775         ieee->wps_ie_len = 0;
 776         kfree(ieee->wps_ie);
 777         ieee->wps_ie = NULL;
 778         if (len) {
 779                 if (len != ie[1]+2)
 780                         return -EINVAL;
 781                 buf = kmemdup(ie, len, GFP_KERNEL);
 782                 if (!buf)
 783                         return -ENOMEM;
 784                 kfree(ieee->wpa_ie);
 785                 ieee->wpa_ie = buf;
 786                 ieee->wpa_ie_len = len;
 787         } else {
 788                 kfree(ieee->wpa_ie);
 789                 ieee->wpa_ie = NULL;
 790                 ieee->wpa_ie_len = 0;
 791         }
 792         return 0;
 793 }
 794 EXPORT_SYMBOL(rtllib_wx_set_gen_ie);