linux/drivers/staging/rtl8192e/rtllib_wx.c
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   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"
  20struct modes_unit {
  21        char *mode_string;
  22        int mode_size;
  23};
  24static 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
  34static 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
 237int 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}
 282EXPORT_SYMBOL(rtllib_wx_get_scan);
 283
 284int 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}
 454EXPORT_SYMBOL(rtllib_wx_set_encode);
 455
 456int 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}
 497EXPORT_SYMBOL(rtllib_wx_get_encode);
 498
 499int 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        }
 643done:
 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}
 655EXPORT_SYMBOL(rtllib_wx_set_encode_ext);
 656
 657int 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}
 702EXPORT_SYMBOL(rtllib_wx_set_mlme);
 703
 704int 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}
 754EXPORT_SYMBOL(rtllib_wx_set_auth);
 755
 756int 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}
 794EXPORT_SYMBOL(rtllib_wx_set_gen_ie);
 795