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