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
  21 static const char * const rtllib_modes[] = {
  22         "a", "b", "g", "?", "N-24G"
  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[6];
  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(info, start, stop, &iwe, IW_EV_ADDR_LEN);
  45         /* Remaining entries will be displayed in the order we provide them */
  46
  47         /* Add the ESSID */
  48         iwe.cmd = SIOCGIWESSID;
  49         iwe.u.data.flags = 1;
  50         if (network->ssid_len > 0) {
  51                 iwe.u.data.length = min_t(u8, network->ssid_len, 32);
  52                 start = iwe_stream_add_point(info, start, stop, &iwe, network->ssid);
  53         } else if (network->hidden_ssid_len == 0) {
  54                 iwe.u.data.length = sizeof("<hidden>");
  55                 start = iwe_stream_add_point(info, start, stop, &iwe, "<hidden>");
  56         } else {
  57                 iwe.u.data.length = min_t(u8, network->hidden_ssid_len, 32);
  58                 start = iwe_stream_add_point(info, start, stop, &iwe, network->hidden_ssid);
  59         }
  60         /* Add the protocol name */
  61         iwe.cmd = SIOCGIWNAME;
  62         for (i = 0; i < ARRAY_SIZE(rtllib_modes); i++) {
  63                 if (network->mode & BIT(i)) {
  64                         strcpy(pname, rtllib_modes[i]);
  65                         pname += strlen(rtllib_modes[i]);
  66                 }
  67         }
  68         *pname = '\0';
  69         snprintf(iwe.u.name, IFNAMSIZ, "IEEE802.11%s", proto_name);
  70         start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_CHAR_LEN);
  71         /* Add mode */
  72         iwe.cmd = SIOCGIWMODE;
  73         if (network->capability &
  74             (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
  75                 if (network->capability & WLAN_CAPABILITY_ESS)
  76                         iwe.u.mode = IW_MODE_MASTER;
  77                 else
  78                         iwe.u.mode = IW_MODE_ADHOC;
  79                 start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_UINT_LEN);
  80         }
  81
  82         /* Add frequency/channel */
  83         iwe.cmd = SIOCGIWFREQ;
  84         iwe.u.freq.m = network->channel;
  85         iwe.u.freq.e = 0;
  86         iwe.u.freq.i = 0;
  87         start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);
  88
  89         /* Add encryption capability */
  90         iwe.cmd = SIOCGIWENCODE;
  91         if (network->capability & WLAN_CAPABILITY_PRIVACY)
  92                 iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
  93         else
  94                 iwe.u.data.flags = IW_ENCODE_DISABLED;
  95         iwe.u.data.length = 0;
  96         start = iwe_stream_add_point(info, start, stop, &iwe, network->ssid);
  97         /* Add basic and extended rates */
  98         max_rate = 0;
  99         p = custom;
 100         p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
 101         for (i = 0, j = 0; i < network->rates_len;) {
 102                 if (j < network->rates_ex_len &&
 103                     ((network->rates_ex[j] & 0x7F) <
 104                      (network->rates[i] & 0x7F)))
 105                         rate = network->rates_ex[j++] & 0x7F;
 106                 else
 107                         rate = network->rates[i++] & 0x7F;
 108                 if (rate > max_rate)
 109                         max_rate = rate;
 110                 p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
 111                               "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 112         }
 113         for (; j < network->rates_ex_len; j++) {
 114                 rate = network->rates_ex[j] & 0x7F;
 115                 p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
 116                               "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 117                 if (rate > max_rate)
 118                         max_rate = rate;
 119         }
 120
 121         if (network->mode >= WIRELESS_MODE_N_24G) {
 122                 struct ht_capab_ele *ht_cap = NULL;
 123                 bool is40M = false, isShortGI = false;
 124                 u8 max_mcs = 0;
 125
 126                 if (!memcmp(network->bssht.bd_ht_cap_buf, EWC11NHTCap, 4))
 127                         ht_cap = (struct ht_capab_ele *)
 128                                  &network->bssht.bd_ht_cap_buf[4];
 129                 else
 130                         ht_cap = (struct ht_capab_ele *)
 131                                  &network->bssht.bd_ht_cap_buf[0];
 132                 is40M = (ht_cap->ChlWidth) ? 1 : 0;
 133                 isShortGI = (ht_cap->ChlWidth) ?
 134                                 ((ht_cap->ShortGI40Mhz) ? 1 : 0) :
 135                                 ((ht_cap->ShortGI20Mhz) ? 1 : 0);
 136
 137                 max_mcs = HTGetHighestMCSRate(ieee, ht_cap->MCS,
 138                                               MCS_FILTER_ALL);
 139                 rate = MCS_DATA_RATE[is40M][isShortGI][max_mcs & 0x7f];
 140                 if (rate > max_rate)
 141                         max_rate = rate;
 142         }
 143         iwe.cmd = SIOCGIWRATE;
 144         iwe.u.bitrate.disabled = 0;
 145         iwe.u.bitrate.fixed = 0;
 146         iwe.u.bitrate.value = max_rate * 500000;
 147         start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_PARAM_LEN);
 148         iwe.cmd = IWEVCUSTOM;
 149         iwe.u.data.length = p - custom;
 150         if (iwe.u.data.length)
 151                 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
 152         /* Add quality statistics */
 153         /* TODO: Fix these values... */
 154         iwe.cmd = IWEVQUAL;
 155         iwe.u.qual.qual = network->stats.signal;
 156         iwe.u.qual.level = network->stats.rssi;
 157         iwe.u.qual.noise = network->stats.noise;
 158         iwe.u.qual.updated = network->stats.mask & RTLLIB_STATMASK_WEMASK;
 159         if (!(network->stats.mask & RTLLIB_STATMASK_RSSI))
 160                 iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
 161         if (!(network->stats.mask & RTLLIB_STATMASK_NOISE))
 162                 iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
 163         if (!(network->stats.mask & RTLLIB_STATMASK_SIGNAL))
 164                 iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
 165         iwe.u.qual.updated = 7;
 166         start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);
 167
 168         iwe.cmd = IWEVCUSTOM;
 169         p = custom;
 170         iwe.u.data.length = p - custom;
 171         if (iwe.u.data.length)
 172                 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
 173
 174         memset(&iwe, 0, sizeof(iwe));
 175         if (network->wpa_ie_len) {
 176                 char buf[MAX_WPA_IE_LEN];
 177
 178                 memcpy(buf, network->wpa_ie, network->wpa_ie_len);
 179                 iwe.cmd = IWEVGENIE;
 180                 iwe.u.data.length = network->wpa_ie_len;
 181                 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
 182         }
 183         memset(&iwe, 0, sizeof(iwe));
 184         if (network->rsn_ie_len) {
 185                 char buf[MAX_WPA_IE_LEN];
 186
 187                 memcpy(buf, network->rsn_ie, network->rsn_ie_len);
 188                 iwe.cmd = IWEVGENIE;
 189                 iwe.u.data.length = network->rsn_ie_len;
 190                 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
 191         }
 192
 193         /* add info for WZC */
 194         memset(&iwe, 0, sizeof(iwe));
 195         if (network->wzc_ie_len) {
 196                 char buf[MAX_WZC_IE_LEN];
 197
 198                 memcpy(buf, network->wzc_ie, network->wzc_ie_len);
 199                 iwe.cmd = IWEVGENIE;
 200                 iwe.u.data.length = network->wzc_ie_len;
 201                 start = iwe_stream_add_point(info, start, stop, &iwe, buf);
 202         }
 203
 204         /* Add EXTRA: Age to display seconds since last beacon/probe response
 205          * for given network.
 206          */
 207         iwe.cmd = IWEVCUSTOM;
 208         p = custom;
 209         p += scnprintf(p, MAX_CUSTOM_LEN - (p - custom),
 210                       " Last beacon: %lums ago",
 211                       (100 * (jiffies - network->last_scanned)) / HZ);
 212         iwe.u.data.length = p - custom;
 213         if (iwe.u.data.length)
 214                 start = iwe_stream_add_point(info, start, stop, &iwe, custom);
 215
 216         return start;
 217 }
 218
 219 int rtllib_wx_get_scan(struct rtllib_device *ieee,
 220                        struct iw_request_info *info,
 221                        union iwreq_data *wrqu, char *extra)
 222 {
 223         struct rtllib_network *network;
 224         unsigned long flags;
 225
 226         char *ev = extra;
 227         char *stop = ev + wrqu->data.length;
 228         int i = 0;
 229         int err = 0;
 230
 231         netdev_dbg(ieee->dev, "Getting scan\n");
 232         mutex_lock(&ieee->wx_mutex);
 233         spin_lock_irqsave(&ieee->lock, flags);
 234
 235         list_for_each_entry(network, &ieee->network_list, list) {
 236                 i++;
 237                 if ((stop - ev) < 200) {
 238                         err = -E2BIG;
 239                         break;
 240                 }
 241                 if (ieee->scan_age == 0 ||
 242                     time_after(network->last_scanned + ieee->scan_age, jiffies))
 243                         ev = rtl819x_translate_scan(ieee, ev, stop, network,
 244                                                     info);
 245                 else
 246                         netdev_dbg(ieee->dev,
 247                                    "Network '%s ( %pM)' hidden due to age (%lums).\n",
 248                                    escape_essid(network->ssid,
 249                                                 network->ssid_len),
 250                                    network->bssid,
 251                                    (100 * (jiffies - network->last_scanned)) /
 252                                    HZ);
 253         }
 254
 255         spin_unlock_irqrestore(&ieee->lock, flags);
 256         mutex_unlock(&ieee->wx_mutex);
 257         wrqu->data.length = ev -  extra;
 258         wrqu->data.flags = 0;
 259
 260         netdev_dbg(ieee->dev, "%s(): %d networks returned.\n", __func__, i);
 261
 262         return err;
 263 }
 264 EXPORT_SYMBOL(rtllib_wx_get_scan);
 265
 266 int rtllib_wx_set_encode(struct rtllib_device *ieee,
 267                          struct iw_request_info *info,
 268                          union iwreq_data *wrqu, char *keybuf)
 269 {
 270         struct iw_point *erq = &wrqu->encoding;
 271         struct net_device *dev = ieee->dev;
 272         struct rtllib_security sec = {
 273                 .flags = 0
 274         };
 275         int i, key, key_provided, len;
 276         struct lib80211_crypt_data **crypt;
 277
 278         key = erq->flags & IW_ENCODE_INDEX;
 279         if (key) {
 280                 if (key > NUM_WEP_KEYS)
 281                         return -EINVAL;
 282                 key--;
 283                 key_provided = 1;
 284         } else {
 285                 key_provided = 0;
 286                 key = ieee->crypt_info.tx_keyidx;
 287         }
 288
 289         netdev_dbg(ieee->dev, "Key: %d [%s]\n", key, key_provided ?
 290                            "provided" : "default");
 291         crypt = &ieee->crypt_info.crypt[key];
 292         if (erq->flags & IW_ENCODE_DISABLED) {
 293                 if (key_provided && *crypt) {
 294                         netdev_dbg(ieee->dev,
 295                                    "Disabling encryption on key %d.\n", key);
 296                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 297                 } else {
 298                         netdev_dbg(ieee->dev, "Disabling encryption.\n");
 299                 }
 300
 301                 /* Check all the keys to see if any are still configured,
 302                  * and if no key index was provided, de-init them all
 303                  */
 304                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 305                         if (ieee->crypt_info.crypt[i]) {
 306                                 if (key_provided)
 307                                         break;
 308                                 lib80211_crypt_delayed_deinit(&ieee->crypt_info,
 309                                                               &ieee->crypt_info.crypt[i]);
 310                         }
 311                 }
 312
 313                 if (i == NUM_WEP_KEYS) {
 314                         sec.enabled = 0;
 315                         sec.level = SEC_LEVEL_0;
 316                         sec.flags |= SEC_ENABLED | SEC_LEVEL;
 317                 }
 318
 319                 goto done;
 320         }
 321
 322         sec.enabled = 1;
 323         sec.flags |= SEC_ENABLED;
 324
 325         if (*crypt && (*crypt)->ops &&
 326             strcmp((*crypt)->ops->name, "R-WEP") != 0) {
 327                 /* changing to use WEP; deinit previously used algorithm
 328                  * on this key
 329                  */
 330                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 331         }
 332
 333         if (!*crypt) {
 334                 struct lib80211_crypt_data *new_crypt;
 335
 336                 /* take WEP into use */
 337                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
 338                 if (!new_crypt)
 339                         return -ENOMEM;
 340                 new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 341                 if (!new_crypt->ops) {
 342                         request_module("rtllib_crypt_wep");
 343                         new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 344                 }
 345
 346                 if (new_crypt->ops)
 347                         new_crypt->priv = new_crypt->ops->init(key);
 348
 349                 if (!new_crypt->ops || !new_crypt->priv) {
 350                         kfree(new_crypt);
 351                         new_crypt = NULL;
 352
 353                         netdev_warn(dev,
 354                                     "%s: could not initialize WEP: load module rtllib_crypt_wep\n",
 355                                     dev->name);
 356                         return -EOPNOTSUPP;
 357                 }
 358                 *crypt = new_crypt;
 359         }
 360
 361         /* If a new key was provided, set it up */
 362         if (erq->length > 0) {
 363                 len = erq->length <= 5 ? 5 : 13;
 364                 memcpy(sec.keys[key], keybuf, erq->length);
 365                 if (len > erq->length)
 366                         memset(sec.keys[key] + erq->length, 0,
 367                                len - erq->length);
 368                 netdev_dbg(ieee->dev, "Setting key %d to '%s' (%d:%d bytes)\n",
 369                            key, escape_essid(sec.keys[key], len), erq->length,
 370                            len);
 371                 sec.key_sizes[key] = len;
 372                 (*crypt)->ops->set_key(sec.keys[key], len, NULL,
 373                                        (*crypt)->priv);
 374                 sec.flags |= (1 << key);
 375                 /* This ensures a key will be activated if no key is
 376                  * explicitly set
 377                  */
 378                 if (key == sec.active_key)
 379                         sec.flags |= SEC_ACTIVE_KEY;
 380                 ieee->crypt_info.tx_keyidx = key;
 381
 382         } else {
 383                 len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
 384                                              NULL, (*crypt)->priv);
 385                 if (len == 0) {
 386                         /* Set a default key of all 0 */
 387                         netdev_info(ieee->dev, "Setting key %d to all zero.\n", key);
 388
 389                         memset(sec.keys[key], 0, 13);
 390                         (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
 391                                                (*crypt)->priv);
 392                         sec.key_sizes[key] = 13;
 393                         sec.flags |= (1 << key);
 394                 }
 395
 396                 /* No key data - just set the default TX key index */
 397                 if (key_provided) {
 398                         netdev_dbg(ieee->dev,
 399                                    "Setting key %d as default Tx key.\n", key);
 400                         ieee->crypt_info.tx_keyidx = key;
 401                         sec.active_key = key;
 402                         sec.flags |= SEC_ACTIVE_KEY;
 403                 }
 404         }
 405  done:
 406         ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
 407         ieee->auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
 408                           WLAN_AUTH_SHARED_KEY;
 409         sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
 410         sec.flags |= SEC_AUTH_MODE;
 411         netdev_dbg(ieee->dev, "Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
 412                            "OPEN" : "SHARED KEY");
 413
 414         /* For now we just support WEP, so only set that security level...
 415          * TODO: When WPA is added this is one place that needs to change
 416          */
 417         sec.flags |= SEC_LEVEL;
 418         sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
 419         return 0;
 420 }
 421 EXPORT_SYMBOL(rtllib_wx_set_encode);
 422
 423 int rtllib_wx_get_encode(struct rtllib_device *ieee,
 424                          struct iw_request_info *info,
 425                          union iwreq_data *wrqu, char *keybuf)
 426 {
 427         struct iw_point *erq = &wrqu->encoding;
 428         int len, key;
 429         struct lib80211_crypt_data *crypt;
 430
 431         if (ieee->iw_mode == IW_MODE_MONITOR)
 432                 return -1;
 433
 434         key = erq->flags & IW_ENCODE_INDEX;
 435         if (key) {
 436                 if (key > NUM_WEP_KEYS)
 437                         return -EINVAL;
 438                 key--;
 439         } else {
 440                 key = ieee->crypt_info.tx_keyidx;
 441         }
 442         crypt = ieee->crypt_info.crypt[key];
 443
 444         erq->flags = key + 1;
 445
 446         if (!crypt || !crypt->ops) {
 447                 erq->length = 0;
 448                 erq->flags |= IW_ENCODE_DISABLED;
 449                 return 0;
 450         }
 451         len = crypt->ops->get_key(keybuf, SCM_KEY_LEN, NULL, crypt->priv);
 452
 453         erq->length = max(len, 0);
 454
 455         erq->flags |= IW_ENCODE_ENABLED;
 456
 457         if (ieee->open_wep)
 458                 erq->flags |= IW_ENCODE_OPEN;
 459         else
 460                 erq->flags |= IW_ENCODE_RESTRICTED;
 461
 462         return 0;
 463 }
 464 EXPORT_SYMBOL(rtllib_wx_get_encode);
 465
 466 int rtllib_wx_set_encode_ext(struct rtllib_device *ieee,
 467                              struct iw_request_info *info,
 468                              union iwreq_data *wrqu, char *extra)
 469 {
 470         int ret = 0;
 471         struct net_device *dev = ieee->dev;
 472         struct iw_point *encoding = &wrqu->encoding;
 473         struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
 474         int i, idx;
 475         int group_key = 0;
 476         const char *alg, *module;
 477         struct lib80211_crypto_ops *ops;
 478         struct lib80211_crypt_data **crypt;
 479
 480         struct rtllib_security sec = {
 481                 .flags = 0,
 482         };
 483         idx = encoding->flags & IW_ENCODE_INDEX;
 484         if (idx) {
 485                 if (idx < 1 || idx > NUM_WEP_KEYS)
 486                         return -EINVAL;
 487                 idx--;
 488         } else {
 489                 idx = ieee->crypt_info.tx_keyidx;
 490         }
 491         if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
 492                 crypt = &ieee->crypt_info.crypt[idx];
 493                 group_key = 1;
 494         } else {
 495                 /* some Cisco APs use idx>0 for unicast in dynamic WEP */
 496                 if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
 497                         return -EINVAL;
 498                 if (ieee->iw_mode == IW_MODE_INFRA)
 499                         crypt = &ieee->crypt_info.crypt[idx];
 500                 else
 501                         return -EINVAL;
 502         }
 503
 504         sec.flags |= SEC_ENABLED;
 505         if ((encoding->flags & IW_ENCODE_DISABLED) ||
 506             ext->alg == IW_ENCODE_ALG_NONE) {
 507                 if (*crypt)
 508                         lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 509
 510                 for (i = 0; i < NUM_WEP_KEYS; i++) {
 511                         if (ieee->crypt_info.crypt[i])
 512                                 break;
 513                 }
 514                 if (i == NUM_WEP_KEYS) {
 515                         sec.enabled = 0;
 516                         sec.level = SEC_LEVEL_0;
 517                         sec.flags |= SEC_LEVEL;
 518                 }
 519                 goto done;
 520         }
 521
 522         sec.enabled = 1;
 523         switch (ext->alg) {
 524         case IW_ENCODE_ALG_WEP:
 525                 alg = "R-WEP";
 526                 module = "rtllib_crypt_wep";
 527                 break;
 528         case IW_ENCODE_ALG_TKIP:
 529                 alg = "R-TKIP";
 530                 module = "rtllib_crypt_tkip";
 531                 break;
 532         case IW_ENCODE_ALG_CCMP:
 533                 alg = "R-CCMP";
 534                 module = "rtllib_crypt_ccmp";
 535                 break;
 536         default:
 537                 netdev_dbg(ieee->dev, "Unknown crypto alg %d\n", ext->alg);
 538                 ret = -EINVAL;
 539                 goto done;
 540         }
 541         netdev_dbg(dev, "alg name:%s\n", alg);
 542
 543         ops = lib80211_get_crypto_ops(alg);
 544         if (!ops) {
 545                 char tempbuf[100];
 546
 547                 memset(tempbuf, 0x00, 100);
 548                 sprintf(tempbuf, "%s", module);
 549                 request_module("%s", tempbuf);
 550                 ops = lib80211_get_crypto_ops(alg);
 551         }
 552         if (!ops) {
 553                 netdev_info(dev, "========>unknown crypto alg %d\n", ext->alg);
 554                 ret = -EINVAL;
 555                 goto done;
 556         }
 557
 558         if (!*crypt || (*crypt)->ops != ops) {
 559                 struct lib80211_crypt_data *new_crypt;
 560
 561                 lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 562
 563                 new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
 564                 if (!new_crypt) {
 565                         ret = -ENOMEM;
 566                         goto done;
 567                 }
 568                 new_crypt->ops = ops;
 569                 if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
 570                         new_crypt->priv = new_crypt->ops->init(idx);
 571
 572                 if (!new_crypt->priv) {
 573                         kfree(new_crypt);
 574                         ret = -EINVAL;
 575                         goto done;
 576                 }
 577                 *crypt = new_crypt;
 578         }
 579
 580         if (ext->key_len > 0 && (*crypt)->ops->set_key &&
 581             (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
 582                                    (*crypt)->priv) < 0) {
 583                 netdev_info(dev, "key setting failed\n");
 584                 ret = -EINVAL;
 585                 goto done;
 586         }
 587         if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
 588                 ieee->crypt_info.tx_keyidx = idx;
 589                 sec.active_key = idx;
 590                 sec.flags |= SEC_ACTIVE_KEY;
 591         }
 592         if (ext->alg != IW_ENCODE_ALG_NONE) {
 593                 sec.key_sizes[idx] = ext->key_len;
 594                 sec.flags |= (1 << idx);
 595                 if (ext->alg == IW_ENCODE_ALG_WEP) {
 596                         sec.flags |= SEC_LEVEL;
 597                         sec.level = SEC_LEVEL_1;
 598                 } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
 599                         sec.flags |= SEC_LEVEL;
 600                         sec.level = SEC_LEVEL_2;
 601                 } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
 602                         sec.flags |= SEC_LEVEL;
 603                         sec.level = SEC_LEVEL_3;
 604                 }
 605                 /* Don't set sec level for group keys. */
 606                 if (group_key)
 607                         sec.flags &= ~SEC_LEVEL;
 608         }
 609 done:
 610         return ret;
 611 }
 612 EXPORT_SYMBOL(rtllib_wx_set_encode_ext);
 613
 614 int rtllib_wx_set_mlme(struct rtllib_device *ieee,
 615                        struct iw_request_info *info,
 616                        union iwreq_data *wrqu, char *extra)
 617 {
 618         u8 i = 0;
 619         bool deauth = false;
 620         struct iw_mlme *mlme = (struct iw_mlme *)extra;
 621
 622         if (ieee->link_state != MAC80211_LINKED)
 623                 return -ENOLINK;
 624
 625         mutex_lock(&ieee->wx_mutex);
 626
 627         switch (mlme->cmd) {
 628         case IW_MLME_DEAUTH:
 629                 deauth = true;
 630                 fallthrough;
 631         case IW_MLME_DISASSOC:
 632                 if (deauth)
 633                         netdev_info(ieee->dev, "disauth packet !\n");
 634                 else
 635                         netdev_info(ieee->dev, "dis associate packet!\n");
 636
 637                 ieee->cannot_notify = true;
 638
 639                 SendDisassociation(ieee, deauth, mlme->reason_code);
 640                 rtllib_disassociate(ieee);
 641
 642                 ieee->wap_set = 0;
 643                 for (i = 0; i < 6; i++)
 644                         ieee->current_network.bssid[i] = 0x55;
 645
 646                 ieee->ssid_set = 0;
 647                 ieee->current_network.ssid[0] = '\0';
 648                 ieee->current_network.ssid_len = 0;
 649                 break;
 650         default:
 651                 mutex_unlock(&ieee->wx_mutex);
 652                 return -EOPNOTSUPP;
 653         }
 654
 655         mutex_unlock(&ieee->wx_mutex);
 656
 657         return 0;
 658 }
 659 EXPORT_SYMBOL(rtllib_wx_set_mlme);
 660
 661 int rtllib_wx_set_auth(struct rtllib_device *ieee,
 662                        struct iw_request_info *info,
 663                        struct iw_param *data, char *extra)
 664 {
 665         switch (data->flags & IW_AUTH_INDEX) {
 666         case IW_AUTH_WPA_VERSION:
 667                 break;
 668         case IW_AUTH_CIPHER_PAIRWISE:
 669         case IW_AUTH_CIPHER_GROUP:
 670         case IW_AUTH_KEY_MGMT:
 671                 /* Host AP driver does not use these parameters and allows
 672                  * wpa_supplicant to control them internally.
 673                  */
 674                 break;
 675         case IW_AUTH_TKIP_COUNTERMEASURES:
 676                 ieee->tkip_countermeasures = data->value;
 677                 break;
 678         case IW_AUTH_DROP_UNENCRYPTED:
 679                 ieee->drop_unencrypted = data->value;
 680                 break;
 681
 682         case IW_AUTH_80211_AUTH_ALG:
 683                 if (data->value & IW_AUTH_ALG_SHARED_KEY) {
 684                         ieee->open_wep = 0;
 685                         ieee->auth_mode = 1;
 686                 } else if (data->value & IW_AUTH_ALG_OPEN_SYSTEM) {
 687                         ieee->open_wep = 1;
 688                         ieee->auth_mode = 0;
 689                 } else if (data->value & IW_AUTH_ALG_LEAP) {
 690                         ieee->open_wep = 1;
 691                         ieee->auth_mode = 2;
 692                 } else {
 693                         return -EINVAL;
 694                 }
 695                 break;
 696
 697         case IW_AUTH_WPA_ENABLED:
 698                 ieee->wpa_enabled = (data->value) ? 1 : 0;
 699                 break;
 700
 701         case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 702                 ieee->ieee802_1x = data->value;
 703                 break;
 704         case IW_AUTH_PRIVACY_INVOKED:
 705                 ieee->privacy_invoked = data->value;
 706                 break;
 707         default:
 708                 return -EOPNOTSUPP;
 709         }
 710         return 0;
 711 }
 712 EXPORT_SYMBOL(rtllib_wx_set_auth);
 713
 714 int rtllib_wx_set_gen_ie(struct rtllib_device *ieee, u8 *ie, size_t len)
 715 {
 716         u8 *buf;
 717         u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 718
 719         if (len > MAX_WPA_IE_LEN || (len && !ie))
 720                 return -EINVAL;
 721
 722         if (len) {
 723                 eid = ie[0];
 724                 if ((eid == MFIE_TYPE_GENERIC) && (!memcmp(&ie[2], wps_oui, 4))) {
 725                         ieee->wps_ie_len = min_t(size_t, len, MAX_WZC_IE_LEN);
 726                         buf = kmemdup(ie, ieee->wps_ie_len, GFP_KERNEL);
 727                         if (!buf)
 728                                 return -ENOMEM;
 729                         ieee->wps_ie = buf;
 730                         return 0;
 731                 }
 732         }
 733         ieee->wps_ie_len = 0;
 734         kfree(ieee->wps_ie);
 735         ieee->wps_ie = NULL;
 736         if (len) {
 737                 if (len != ie[1] + 2)
 738                         return -EINVAL;
 739                 buf = kmemdup(ie, len, GFP_KERNEL);
 740                 if (!buf)
 741                         return -ENOMEM;
 742                 kfree(ieee->wpa_ie);
 743                 ieee->wpa_ie = buf;
 744                 ieee->wpa_ie_len = len;
 745         } else {
 746                 kfree(ieee->wpa_ie);
 747                 ieee->wpa_ie = NULL;
 748                 ieee->wpa_ie_len = 0;
 749         }
 750         return 0;
 751 }
 752 EXPORT_SYMBOL(rtllib_wx_set_gen_ie);