linux/drivers/staging/rtl8192e/rtllib_wx.c
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   1/******************************************************************************
   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 * This program is free software; you can redistribute it and/or modify it
  12 * under the terms of version 2 of the GNU General Public License as
  13 * published by the Free Software Foundation.
  14 *
  15 * This program is distributed in the hope that it will be useful, but WITHOUT
  16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18 * more details.
  19 *
  20 * The full GNU General Public License is included in this distribution in the
  21 * file called LICENSE.
  22 *
  23 * Contact Information:
  24 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  25 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26 *
  27 *****************************************************************************/
  28#include <linux/wireless.h>
  29#include <linux/kmod.h>
  30#include <linux/module.h>
  31#include <linux/etherdevice.h>
  32#include "rtllib.h"
  33struct modes_unit {
  34        char *mode_string;
  35        int mode_size;
  36};
  37static struct modes_unit rtllib_modes[] = {
  38        {"a", 1},
  39        {"b", 1},
  40        {"g", 1},
  41        {"?", 1},
  42        {"N-24G", 5},
  43        {"N-5G", 4},
  44};
  45
  46#define MAX_CUSTOM_LEN 64
  47static inline char *rtl819x_translate_scan(struct rtllib_device *ieee,
  48                                           char *start, char *stop,
  49                                           struct rtllib_network *network,
  50                                           struct iw_request_info *info)
  51{
  52        char custom[MAX_CUSTOM_LEN];
  53        char proto_name[IFNAMSIZ];
  54        char *pname = proto_name;
  55        char *p;
  56        struct iw_event iwe;
  57        int i, j;
  58        u16 max_rate, rate;
  59        static u8       EWC11NHTCap[] = {0x00, 0x90, 0x4c, 0x33};
  60
  61        /* First entry *MUST* be the AP MAC address */
  62        iwe.cmd = SIOCGIWAP;
  63        iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
  64        ether_addr_copy(iwe.u.ap_addr.sa_data, network->bssid);
  65        start = iwe_stream_add_event_rsl(info, start, stop,
  66                                         &iwe, IW_EV_ADDR_LEN);
  67        /* Remaining entries will be displayed in the order we provide them */
  68
  69        /* Add the ESSID */
  70        iwe.cmd = SIOCGIWESSID;
  71        iwe.u.data.flags = 1;
  72        if (network->ssid_len > 0) {
  73                iwe.u.data.length = min_t(u8, network->ssid_len, 32);
  74                start = iwe_stream_add_point_rsl(info, start, stop, &iwe,
  75                                                 network->ssid);
  76        } else if (network->hidden_ssid_len == 0) {
  77                iwe.u.data.length = sizeof("<hidden>");
  78                start = iwe_stream_add_point_rsl(info, start, stop,
  79                                                 &iwe, "<hidden>");
  80        } else {
  81                iwe.u.data.length = min_t(u8, network->hidden_ssid_len, 32);
  82                start = iwe_stream_add_point_rsl(info, start, stop, &iwe,
  83                                                 network->hidden_ssid);
  84        }
  85        /* Add the protocol name */
  86        iwe.cmd = SIOCGIWNAME;
  87        for (i = 0; i < ARRAY_SIZE(rtllib_modes); i++) {
  88                if (network->mode&(1<<i)) {
  89                        sprintf(pname, rtllib_modes[i].mode_string,
  90                                rtllib_modes[i].mode_size);
  91                        pname += rtllib_modes[i].mode_size;
  92                }
  93        }
  94        *pname = '\0';
  95        snprintf(iwe.u.name, IFNAMSIZ, "IEEE802.11%s", proto_name);
  96        start = iwe_stream_add_event_rsl(info, start, stop,
  97                                         &iwe, IW_EV_CHAR_LEN);
  98        /* Add mode */
  99        iwe.cmd = SIOCGIWMODE;
 100        if (network->capability &
 101            (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
 102                if (network->capability & WLAN_CAPABILITY_ESS)
 103                        iwe.u.mode = IW_MODE_MASTER;
 104                else
 105                        iwe.u.mode = IW_MODE_ADHOC;
 106                start = iwe_stream_add_event_rsl(info, start, stop,
 107                                                 &iwe, IW_EV_UINT_LEN);
 108        }
 109
 110        /* Add frequency/channel */
 111        iwe.cmd = SIOCGIWFREQ;
 112        iwe.u.freq.m = network->channel;
 113        iwe.u.freq.e = 0;
 114        iwe.u.freq.i = 0;
 115        start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 116                                         IW_EV_FREQ_LEN);
 117
 118        /* Add encryption capability */
 119        iwe.cmd = SIOCGIWENCODE;
 120        if (network->capability & WLAN_CAPABILITY_PRIVACY)
 121                iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 122        else
 123                iwe.u.data.flags = IW_ENCODE_DISABLED;
 124        iwe.u.data.length = 0;
 125        start = iwe_stream_add_point_rsl(info, start, stop,
 126                                         &iwe, network->ssid);
 127        /* Add basic and extended rates */
 128        max_rate = 0;
 129        p = custom;
 130        p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
 131        for (i = 0, j = 0; i < network->rates_len;) {
 132                if (j < network->rates_ex_len &&
 133                    ((network->rates_ex[j] & 0x7F) <
 134                     (network->rates[i] & 0x7F)))
 135                        rate = network->rates_ex[j++] & 0x7F;
 136                else
 137                        rate = network->rates[i++] & 0x7F;
 138                if (rate > max_rate)
 139                        max_rate = rate;
 140                p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 141                              "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 142        }
 143        for (; j < network->rates_ex_len; j++) {
 144                rate = network->rates_ex[j] & 0x7F;
 145                p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 146                              "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
 147                if (rate > max_rate)
 148                        max_rate = rate;
 149        }
 150
 151        if (network->mode >= IEEE_N_24G) {
 152                struct ht_capab_ele *ht_cap = NULL;
 153                bool is40M = false, isShortGI = false;
 154                u8 max_mcs = 0;
 155
 156                if (!memcmp(network->bssht.bdHTCapBuf, EWC11NHTCap, 4))
 157                        ht_cap = (struct ht_capab_ele *)
 158                                 &network->bssht.bdHTCapBuf[4];
 159                else
 160                        ht_cap = (struct ht_capab_ele *)
 161                                 &network->bssht.bdHTCapBuf[0];
 162                is40M = (ht_cap->ChlWidth) ? 1 : 0;
 163                isShortGI = (ht_cap->ChlWidth) ?
 164                                ((ht_cap->ShortGI40Mhz) ? 1 : 0) :
 165                                ((ht_cap->ShortGI20Mhz) ? 1 : 0);
 166
 167                max_mcs = HTGetHighestMCSRate(ieee, ht_cap->MCS,
 168                                              MCS_FILTER_ALL);
 169                rate = MCS_DATA_RATE[is40M][isShortGI][max_mcs & 0x7f];
 170                if (rate > max_rate)
 171                        max_rate = rate;
 172        }
 173        iwe.cmd = SIOCGIWRATE;
 174        iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
 175        iwe.u.bitrate.value = max_rate * 500000;
 176        start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 177                                     IW_EV_PARAM_LEN);
 178        iwe.cmd = IWEVCUSTOM;
 179        iwe.u.data.length = p - custom;
 180        if (iwe.u.data.length)
 181                start = iwe_stream_add_point_rsl(info, start, stop,
 182                                                 &iwe, custom);
 183        /* Add quality statistics */
 184        /* TODO: Fix these values... */
 185        iwe.cmd = IWEVQUAL;
 186        iwe.u.qual.qual = network->stats.signal;
 187        iwe.u.qual.level = network->stats.rssi;
 188        iwe.u.qual.noise = network->stats.noise;
 189        iwe.u.qual.updated = network->stats.mask & RTLLIB_STATMASK_WEMASK;
 190        if (!(network->stats.mask & RTLLIB_STATMASK_RSSI))
 191                iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
 192        if (!(network->stats.mask & RTLLIB_STATMASK_NOISE))
 193                iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
 194        if (!(network->stats.mask & RTLLIB_STATMASK_SIGNAL))
 195                iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
 196        iwe.u.qual.updated = 7;
 197        start = iwe_stream_add_event_rsl(info, start, stop, &iwe,
 198                                         IW_EV_QUAL_LEN);
 199
 200        iwe.cmd = IWEVCUSTOM;
 201        p = custom;
 202        iwe.u.data.length = p - custom;
 203        if (iwe.u.data.length)
 204                start = iwe_stream_add_point_rsl(info, start, stop,
 205                                                 &iwe, custom);
 206
 207        memset(&iwe, 0, sizeof(iwe));
 208        if (network->wpa_ie_len) {
 209                char buf[MAX_WPA_IE_LEN];
 210
 211                memcpy(buf, network->wpa_ie, network->wpa_ie_len);
 212                iwe.cmd = IWEVGENIE;
 213                iwe.u.data.length = network->wpa_ie_len;
 214                start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 215        }
 216        memset(&iwe, 0, sizeof(iwe));
 217        if (network->rsn_ie_len) {
 218                char buf[MAX_WPA_IE_LEN];
 219
 220                memcpy(buf, network->rsn_ie, network->rsn_ie_len);
 221                iwe.cmd = IWEVGENIE;
 222                iwe.u.data.length = network->rsn_ie_len;
 223                start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 224        }
 225
 226        /* add info for WZC */
 227        memset(&iwe, 0, sizeof(iwe));
 228        if (network->wzc_ie_len) {
 229                char buf[MAX_WZC_IE_LEN];
 230
 231                memcpy(buf, network->wzc_ie, network->wzc_ie_len);
 232                iwe.cmd = IWEVGENIE;
 233                iwe.u.data.length = network->wzc_ie_len;
 234                start = iwe_stream_add_point_rsl(info, start, stop, &iwe, buf);
 235        }
 236
 237        /* Add EXTRA: Age to display seconds since last beacon/probe response
 238         * for given network.
 239         */
 240        iwe.cmd = IWEVCUSTOM;
 241        p = custom;
 242        p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
 243                      " Last beacon: %lums ago",
 244                      (jiffies - network->last_scanned) / (HZ / 100));
 245        iwe.u.data.length = p - custom;
 246        if (iwe.u.data.length)
 247                start = iwe_stream_add_point_rsl(info, start, stop,
 248                                                 &iwe, custom);
 249
 250        return start;
 251}
 252
 253int rtllib_wx_get_scan(struct rtllib_device *ieee,
 254                          struct iw_request_info *info,
 255                          union iwreq_data *wrqu, char *extra)
 256{
 257        struct rtllib_network *network;
 258        unsigned long flags;
 259
 260        char *ev = extra;
 261        char *stop = ev + wrqu->data.length;
 262        int i = 0;
 263        int err = 0;
 264
 265        netdev_dbg(ieee->dev, "Getting scan\n");
 266        mutex_lock(&ieee->wx_mutex);
 267        spin_lock_irqsave(&ieee->lock, flags);
 268
 269        list_for_each_entry(network, &ieee->network_list, list) {
 270                i++;
 271                if ((stop - ev) < 200) {
 272                        err = -E2BIG;
 273                        break;
 274                }
 275                if (ieee->scan_age == 0 ||
 276                    time_after(network->last_scanned + ieee->scan_age, jiffies))
 277                        ev = rtl819x_translate_scan(ieee, ev, stop, network,
 278                                                    info);
 279                else
 280                        netdev_dbg(ieee->dev,
 281                                   "Network '%s ( %pM)' hidden due to age (%lums).\n",
 282                                   escape_essid(network->ssid,
 283                                                network->ssid_len),
 284                                   network->bssid,
 285                                   (jiffies - network->last_scanned) /
 286                                   (HZ / 100));
 287        }
 288
 289        spin_unlock_irqrestore(&ieee->lock, flags);
 290        mutex_unlock(&ieee->wx_mutex);
 291        wrqu->data.length = ev -  extra;
 292        wrqu->data.flags = 0;
 293
 294        netdev_dbg(ieee->dev, "%s(): %d networks returned.\n", __func__, i);
 295
 296        return err;
 297}
 298EXPORT_SYMBOL(rtllib_wx_get_scan);
 299
 300int rtllib_wx_set_encode(struct rtllib_device *ieee,
 301                            struct iw_request_info *info,
 302                            union iwreq_data *wrqu, char *keybuf)
 303{
 304        struct iw_point *erq = &(wrqu->encoding);
 305        struct net_device *dev = ieee->dev;
 306        struct rtllib_security sec = {
 307                .flags = 0
 308        };
 309        int i, key, key_provided, len;
 310        struct lib80211_crypt_data **crypt;
 311
 312        netdev_dbg(ieee->dev, "%s()\n", __func__);
 313
 314        key = erq->flags & IW_ENCODE_INDEX;
 315        if (key) {
 316                if (key > NUM_WEP_KEYS)
 317                        return -EINVAL;
 318                key--;
 319                key_provided = 1;
 320        } else {
 321                key_provided = 0;
 322                key = ieee->crypt_info.tx_keyidx;
 323        }
 324
 325        netdev_dbg(ieee->dev, "Key: %d [%s]\n", key, key_provided ?
 326                           "provided" : "default");
 327        crypt = &ieee->crypt_info.crypt[key];
 328        if (erq->flags & IW_ENCODE_DISABLED) {
 329                if (key_provided && *crypt) {
 330                        netdev_dbg(ieee->dev,
 331                                   "Disabling encryption on key %d.\n", key);
 332                        lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 333                } else
 334                        netdev_dbg(ieee->dev, "Disabling encryption.\n");
 335
 336                /* Check all the keys to see if any are still configured,
 337                 * and if no key index was provided, de-init them all
 338                 */
 339                for (i = 0; i < NUM_WEP_KEYS; i++) {
 340                        if (ieee->crypt_info.crypt[i] != NULL) {
 341                                if (key_provided)
 342                                        break;
 343                                lib80211_crypt_delayed_deinit(&ieee->crypt_info,
 344                                                    &ieee->crypt_info.crypt[i]);
 345                        }
 346                }
 347
 348                if (i == NUM_WEP_KEYS) {
 349                        sec.enabled = 0;
 350                        sec.level = SEC_LEVEL_0;
 351                        sec.flags |= SEC_ENABLED | SEC_LEVEL;
 352                }
 353
 354                goto done;
 355        }
 356
 357
 358
 359        sec.enabled = 1;
 360        sec.flags |= SEC_ENABLED;
 361
 362        if (*crypt != NULL && (*crypt)->ops != NULL &&
 363            strcmp((*crypt)->ops->name, "R-WEP") != 0) {
 364                /* changing to use WEP; deinit previously used algorithm
 365                 * on this key
 366                 */
 367                lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 368        }
 369
 370        if (*crypt == NULL) {
 371                struct lib80211_crypt_data *new_crypt;
 372
 373                /* take WEP into use */
 374                new_crypt = kzalloc(sizeof(struct lib80211_crypt_data),
 375                                    GFP_KERNEL);
 376                if (new_crypt == NULL)
 377                        return -ENOMEM;
 378                new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 379                if (!new_crypt->ops) {
 380                        request_module("rtllib_crypt_wep");
 381                        new_crypt->ops = lib80211_get_crypto_ops("R-WEP");
 382                }
 383
 384                if (new_crypt->ops)
 385                        new_crypt->priv = new_crypt->ops->init(key);
 386
 387                if (!new_crypt->ops || !new_crypt->priv) {
 388                        kfree(new_crypt);
 389                        new_crypt = NULL;
 390
 391                        netdev_warn(dev,
 392                                    "%s: could not initialize WEP: load module rtllib_crypt_wep\n",
 393                                    dev->name);
 394                        return -EOPNOTSUPP;
 395                }
 396                *crypt = new_crypt;
 397        }
 398
 399        /* If a new key was provided, set it up */
 400        if (erq->length > 0) {
 401                len = erq->length <= 5 ? 5 : 13;
 402                memcpy(sec.keys[key], keybuf, erq->length);
 403                if (len > erq->length)
 404                        memset(sec.keys[key] + erq->length, 0,
 405                               len - erq->length);
 406                netdev_dbg(ieee->dev, "Setting key %d to '%s' (%d:%d bytes)\n",
 407                           key, escape_essid(sec.keys[key], len), erq->length,
 408                           len);
 409                sec.key_sizes[key] = len;
 410                (*crypt)->ops->set_key(sec.keys[key], len, NULL,
 411                                       (*crypt)->priv);
 412                sec.flags |= (1 << key);
 413                /* This ensures a key will be activated if no key is
 414                 * explicitly set
 415                 */
 416                if (key == sec.active_key)
 417                        sec.flags |= SEC_ACTIVE_KEY;
 418                ieee->crypt_info.tx_keyidx = key;
 419
 420        } else {
 421                len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
 422                                             NULL, (*crypt)->priv);
 423                if (len == 0) {
 424                        /* Set a default key of all 0 */
 425                        netdev_info(ieee->dev, "Setting key %d to all zero.\n",
 426                                           key);
 427
 428                        memset(sec.keys[key], 0, 13);
 429                        (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
 430                                               (*crypt)->priv);
 431                        sec.key_sizes[key] = 13;
 432                        sec.flags |= (1 << key);
 433                }
 434
 435                /* No key data - just set the default TX key index */
 436                if (key_provided) {
 437                        netdev_dbg(ieee->dev,
 438                                   "Setting key %d as default Tx key.\n", key);
 439                        ieee->crypt_info.tx_keyidx = key;
 440                        sec.active_key = key;
 441                        sec.flags |= SEC_ACTIVE_KEY;
 442                }
 443        }
 444 done:
 445        ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
 446        ieee->auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
 447                          WLAN_AUTH_SHARED_KEY;
 448        sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
 449        sec.flags |= SEC_AUTH_MODE;
 450        netdev_dbg(ieee->dev, "Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
 451                           "OPEN" : "SHARED KEY");
 452
 453        /* For now we just support WEP, so only set that security level...
 454         * TODO: When WPA is added this is one place that needs to change
 455         */
 456        sec.flags |= SEC_LEVEL;
 457        sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
 458
 459        if (ieee->set_security)
 460                ieee->set_security(dev, &sec);
 461
 462        /* Do not reset port if card is in Managed mode since resetting will
 463         * generate new IEEE 802.11 authentication which may end up in looping
 464         * with IEEE 802.1X.  If your hardware requires a reset after WEP
 465         * configuration (for example... Prism2), implement the reset_port in
 466         * the callbacks structures used to initialize the 802.11 stack.
 467         */
 468        if (ieee->reset_on_keychange &&
 469            ieee->iw_mode != IW_MODE_INFRA &&
 470            ieee->reset_port && ieee->reset_port(dev)) {
 471                netdev_dbg(dev, "%s: reset_port failed\n", dev->name);
 472                return -EINVAL;
 473        }
 474        return 0;
 475}
 476EXPORT_SYMBOL(rtllib_wx_set_encode);
 477
 478int rtllib_wx_get_encode(struct rtllib_device *ieee,
 479                            struct iw_request_info *info,
 480                            union iwreq_data *wrqu, char *keybuf)
 481{
 482        struct iw_point *erq = &(wrqu->encoding);
 483        int len, key;
 484        struct lib80211_crypt_data *crypt;
 485
 486        netdev_dbg(ieee->dev, "%s()\n", __func__);
 487
 488        if (ieee->iw_mode == IW_MODE_MONITOR)
 489                return -1;
 490
 491        key = erq->flags & IW_ENCODE_INDEX;
 492        if (key) {
 493                if (key > NUM_WEP_KEYS)
 494                        return -EINVAL;
 495                key--;
 496        } else {
 497                key = ieee->crypt_info.tx_keyidx;
 498        }
 499        crypt = ieee->crypt_info.crypt[key];
 500
 501        erq->flags = key + 1;
 502
 503        if (crypt == NULL || crypt->ops == NULL) {
 504                erq->length = 0;
 505                erq->flags |= IW_ENCODE_DISABLED;
 506                return 0;
 507        }
 508        len = crypt->ops->get_key(keybuf, SCM_KEY_LEN, NULL, crypt->priv);
 509
 510        erq->length = max(len, 0);
 511
 512        erq->flags |= IW_ENCODE_ENABLED;
 513
 514        if (ieee->open_wep)
 515                erq->flags |= IW_ENCODE_OPEN;
 516        else
 517                erq->flags |= IW_ENCODE_RESTRICTED;
 518
 519        return 0;
 520}
 521EXPORT_SYMBOL(rtllib_wx_get_encode);
 522
 523int rtllib_wx_set_encode_ext(struct rtllib_device *ieee,
 524                               struct iw_request_info *info,
 525                               union iwreq_data *wrqu, char *extra)
 526{
 527        int ret = 0;
 528        struct net_device *dev = ieee->dev;
 529        struct iw_point *encoding = &wrqu->encoding;
 530        struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
 531        int i, idx;
 532        int group_key = 0;
 533        const char *alg, *module;
 534        struct lib80211_crypto_ops *ops;
 535        struct lib80211_crypt_data **crypt;
 536
 537        struct rtllib_security sec = {
 538                .flags = 0,
 539        };
 540        idx = encoding->flags & IW_ENCODE_INDEX;
 541        if (idx) {
 542                if (idx < 1 || idx > NUM_WEP_KEYS)
 543                        return -EINVAL;
 544                idx--;
 545        } else{
 546                        idx = ieee->crypt_info.tx_keyidx;
 547        }
 548        if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
 549                crypt = &ieee->crypt_info.crypt[idx];
 550                group_key = 1;
 551        } else {
 552                /* some Cisco APs use idx>0 for unicast in dynamic WEP */
 553                if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
 554                        return -EINVAL;
 555                if (ieee->iw_mode == IW_MODE_INFRA)
 556                        crypt = &ieee->crypt_info.crypt[idx];
 557                else
 558                        return -EINVAL;
 559        }
 560
 561        sec.flags |= SEC_ENABLED;
 562        if ((encoding->flags & IW_ENCODE_DISABLED) ||
 563            ext->alg == IW_ENCODE_ALG_NONE) {
 564                if (*crypt)
 565                        lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 566
 567                for (i = 0; i < NUM_WEP_KEYS; i++) {
 568                        if (ieee->crypt_info.crypt[i] != NULL)
 569                                break;
 570                }
 571                if (i == NUM_WEP_KEYS) {
 572                        sec.enabled = 0;
 573                        sec.level = SEC_LEVEL_0;
 574                        sec.flags |= SEC_LEVEL;
 575                }
 576                goto done;
 577        }
 578
 579        sec.enabled = 1;
 580        switch (ext->alg) {
 581        case IW_ENCODE_ALG_WEP:
 582                alg = "R-WEP";
 583                module = "rtllib_crypt_wep";
 584                break;
 585        case IW_ENCODE_ALG_TKIP:
 586                alg = "R-TKIP";
 587                module = "rtllib_crypt_tkip";
 588                break;
 589        case IW_ENCODE_ALG_CCMP:
 590                alg = "R-CCMP";
 591                module = "rtllib_crypt_ccmp";
 592                break;
 593        default:
 594                netdev_dbg(ieee->dev, "Unknown crypto alg %d\n", ext->alg);
 595                ret = -EINVAL;
 596                goto done;
 597        }
 598        netdev_dbg(dev, "alg name:%s\n", alg);
 599
 600        ops = lib80211_get_crypto_ops(alg);
 601        if (ops == NULL) {
 602                char tempbuf[100];
 603
 604                memset(tempbuf, 0x00, 100);
 605                sprintf(tempbuf, "%s", module);
 606                request_module("%s", tempbuf);
 607                ops = lib80211_get_crypto_ops(alg);
 608        }
 609        if (ops == NULL) {
 610                netdev_info(dev, "========>unknown crypto alg %d\n", ext->alg);
 611                ret = -EINVAL;
 612                goto done;
 613        }
 614
 615        if (*crypt == NULL || (*crypt)->ops != ops) {
 616                struct lib80211_crypt_data *new_crypt;
 617
 618                lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
 619
 620                new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
 621                if (new_crypt == NULL) {
 622                        ret = -ENOMEM;
 623                        goto done;
 624                }
 625                new_crypt->ops = ops;
 626                if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
 627                        new_crypt->priv = new_crypt->ops->init(idx);
 628
 629                if (new_crypt->priv == NULL) {
 630                        kfree(new_crypt);
 631                        ret = -EINVAL;
 632                        goto done;
 633                }
 634                *crypt = new_crypt;
 635
 636        }
 637
 638        if (ext->key_len > 0 && (*crypt)->ops->set_key &&
 639            (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
 640                                   (*crypt)->priv) < 0) {
 641                netdev_info(dev, "key setting failed\n");
 642                ret = -EINVAL;
 643                goto done;
 644        }
 645        if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
 646                ieee->crypt_info.tx_keyidx = idx;
 647                sec.active_key = idx;
 648                sec.flags |= SEC_ACTIVE_KEY;
 649        }
 650        if (ext->alg != IW_ENCODE_ALG_NONE) {
 651                sec.key_sizes[idx] = ext->key_len;
 652                sec.flags |= (1 << idx);
 653                if (ext->alg == IW_ENCODE_ALG_WEP) {
 654                        sec.flags |= SEC_LEVEL;
 655                        sec.level = SEC_LEVEL_1;
 656                } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
 657                        sec.flags |= SEC_LEVEL;
 658                        sec.level = SEC_LEVEL_2;
 659                } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
 660                        sec.flags |= SEC_LEVEL;
 661                        sec.level = SEC_LEVEL_3;
 662                }
 663                /* Don't set sec level for group keys. */
 664                if (group_key)
 665                        sec.flags &= ~SEC_LEVEL;
 666        }
 667done:
 668        if (ieee->set_security)
 669                ieee->set_security(ieee->dev, &sec);
 670
 671        if (ieee->reset_on_keychange &&
 672            ieee->iw_mode != IW_MODE_INFRA &&
 673            ieee->reset_port && ieee->reset_port(dev)) {
 674                netdev_dbg(ieee->dev, "Port reset failed\n");
 675                return -EINVAL;
 676        }
 677        return ret;
 678}
 679EXPORT_SYMBOL(rtllib_wx_set_encode_ext);
 680
 681int rtllib_wx_set_mlme(struct rtllib_device *ieee,
 682                               struct iw_request_info *info,
 683                               union iwreq_data *wrqu, char *extra)
 684{
 685        u8 i = 0;
 686        bool deauth = false;
 687        struct iw_mlme *mlme = (struct iw_mlme *) extra;
 688
 689        if (ieee->state != RTLLIB_LINKED)
 690                return -ENOLINK;
 691
 692        mutex_lock(&ieee->wx_mutex);
 693
 694        switch (mlme->cmd) {
 695        case IW_MLME_DEAUTH:
 696                deauth = true;
 697                /* leave break out intentionly */
 698
 699        case IW_MLME_DISASSOC:
 700                if (deauth)
 701                        netdev_info(ieee->dev, "disauth packet !\n");
 702                else
 703                        netdev_info(ieee->dev, "dis associate packet!\n");
 704
 705                ieee->cannot_notify = true;
 706
 707                SendDisassociation(ieee, deauth, mlme->reason_code);
 708                rtllib_disassociate(ieee);
 709
 710                ieee->wap_set = 0;
 711                for (i = 0; i < 6; i++)
 712                        ieee->current_network.bssid[i] = 0x55;
 713
 714                ieee->ssid_set = 0;
 715                ieee->current_network.ssid[0] = '\0';
 716                ieee->current_network.ssid_len = 0;
 717                break;
 718        default:
 719                mutex_unlock(&ieee->wx_mutex);
 720                return -EOPNOTSUPP;
 721        }
 722
 723        mutex_unlock(&ieee->wx_mutex);
 724
 725        return 0;
 726}
 727EXPORT_SYMBOL(rtllib_wx_set_mlme);
 728
 729int rtllib_wx_set_auth(struct rtllib_device *ieee,
 730                               struct iw_request_info *info,
 731                               struct iw_param *data, char *extra)
 732{
 733        switch (data->flags & IW_AUTH_INDEX) {
 734        case IW_AUTH_WPA_VERSION:
 735                break;
 736        case IW_AUTH_CIPHER_PAIRWISE:
 737        case IW_AUTH_CIPHER_GROUP:
 738        case IW_AUTH_KEY_MGMT:
 739                /* Host AP driver does not use these parameters and allows
 740                 * wpa_supplicant to control them internally.
 741                 */
 742                break;
 743        case IW_AUTH_TKIP_COUNTERMEASURES:
 744                ieee->tkip_countermeasures = data->value;
 745                break;
 746        case IW_AUTH_DROP_UNENCRYPTED:
 747                ieee->drop_unencrypted = data->value;
 748                break;
 749
 750        case IW_AUTH_80211_AUTH_ALG:
 751                if (data->value & IW_AUTH_ALG_SHARED_KEY) {
 752                        ieee->open_wep = 0;
 753                        ieee->auth_mode = 1;
 754                } else if (data->value & IW_AUTH_ALG_OPEN_SYSTEM) {
 755                        ieee->open_wep = 1;
 756                        ieee->auth_mode = 0;
 757                } else if (data->value & IW_AUTH_ALG_LEAP) {
 758                        ieee->open_wep = 1;
 759                        ieee->auth_mode = 2;
 760                } else
 761                        return -EINVAL;
 762                break;
 763
 764        case IW_AUTH_WPA_ENABLED:
 765                ieee->wpa_enabled = (data->value) ? 1 : 0;
 766                break;
 767
 768        case IW_AUTH_RX_UNENCRYPTED_EAPOL:
 769                ieee->ieee802_1x = data->value;
 770                break;
 771        case IW_AUTH_PRIVACY_INVOKED:
 772                ieee->privacy_invoked = data->value;
 773                break;
 774        default:
 775                return -EOPNOTSUPP;
 776        }
 777        return 0;
 778}
 779EXPORT_SYMBOL(rtllib_wx_set_auth);
 780
 781int rtllib_wx_set_gen_ie(struct rtllib_device *ieee, u8 *ie, size_t len)
 782{
 783        u8 *buf;
 784        u8 eid, wps_oui[4] = {0x0, 0x50, 0xf2, 0x04};
 785
 786        if (len > MAX_WPA_IE_LEN || (len && ie == NULL))
 787                return -EINVAL;
 788
 789        if (len) {
 790                eid = ie[0];
 791                if ((eid == MFIE_TYPE_GENERIC) && (!memcmp(&ie[2],
 792                     wps_oui, 4))) {
 793
 794                        ieee->wps_ie_len = min_t(size_t, len, MAX_WZC_IE_LEN);
 795                        buf = kmemdup(ie, ieee->wps_ie_len, GFP_KERNEL);
 796                        if (buf == NULL)
 797                                return -ENOMEM;
 798                        ieee->wps_ie = buf;
 799                        return 0;
 800                }
 801        }
 802        ieee->wps_ie_len = 0;
 803        kfree(ieee->wps_ie);
 804        ieee->wps_ie = NULL;
 805        if (len) {
 806                if (len != ie[1]+2)
 807                        return -EINVAL;
 808                buf = kmemdup(ie, len, GFP_KERNEL);
 809                if (buf == NULL)
 810                        return -ENOMEM;
 811                kfree(ieee->wpa_ie);
 812                ieee->wpa_ie = buf;
 813                ieee->wpa_ie_len = len;
 814        } else {
 815                kfree(ieee->wpa_ie);
 816                ieee->wpa_ie = NULL;
 817                ieee->wpa_ie_len = 0;
 818        }
 819        return 0;
 820}
 821EXPORT_SYMBOL(rtllib_wx_set_gen_ie);
 822