ClabureDB: Classified Bug-Reports Database

  /******************************************************************************
  
    Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
  
    Portions of this file are based on the WEP enablement code provided by the
    Host AP project hostap-drivers v0.1.3
    Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
    <j@w1.fi>
    Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
 
   This program is free software; you can redistribute it and/or modify it
   under the terms of version 2 of the GNU General Public License as
   published by the Free Software Foundation.
 
   This program is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   more details.
 
   You should have received a copy of the GNU General Public License along with
   this program; if not, write to the Free Software Foundation, Inc., 59
   Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
   The full GNU General Public License is included in this distribution in the
   file called LICENSE.
 
   Contact Information:
   James P. Ketrenos <ipw2100-admin@linux.intel.com>
   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 
 ******************************************************************************/
 
 #include <linux/kmod.h>
 #include <linux/module.h>
 #include <linux/jiffies.h>
 
 #include <net/ieee80211.h>
 #include <linux/wireless.h>
 
 static const char *ieee80211_modes[] = {
         "?", "a", "b", "ab", "g", "ag", "bg", "abg"
 };
 
 #define MAX_CUSTOM_LEN 64
 static char *ieee80211_translate_scan(struct ieee80211_device *ieee,
                                       char *start, char *stop,
                                       struct ieee80211_network *network,
                                       struct iw_request_info *info)
 {
         char custom[MAX_CUSTOM_LEN];
         char *p;
         struct iw_event iwe;
         int i, j;
         char *current_val;        /* For rates */
         u8 rate;
 
         /* First entry *MUST* be the AP MAC address */
         iwe.cmd = SIOCGIWAP;
         iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
         memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
         start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_ADDR_LEN);
 
         /* Remaining entries will be displayed in the order we provide them */
 
         /* Add the ESSID */
         iwe.cmd = SIOCGIWESSID;
         iwe.u.data.flags = 1;
         if (network->flags & NETWORK_EMPTY_ESSID) {
                 iwe.u.data.length = sizeof("<hidden>");
                 start = iwe_stream_add_point(info, start, stop,
                                              &iwe, "<hidden>");
         } else {
                 iwe.u.data.length = min(network->ssid_len, (u8) 32);
                 start = iwe_stream_add_point(info, start, stop,
                                              &iwe, network->ssid);
         }
 
         /* Add the protocol name */
         iwe.cmd = SIOCGIWNAME;
         snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s",
                  ieee80211_modes[network->mode]);
         start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_CHAR_LEN);
 
         /* Add mode */
         iwe.cmd = SIOCGIWMODE;
         if (network->capability & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
                 if (network->capability & WLAN_CAPABILITY_ESS)
                         iwe.u.mode = IW_MODE_MASTER;
                 else
                         iwe.u.mode = IW_MODE_ADHOC;
 
                 start = iwe_stream_add_event(info, start, stop,
                                              &iwe, IW_EV_UINT_LEN);
         }
 
         /* Add channel and frequency */
         /* Note : userspace automatically computes channel using iwrange */
         iwe.cmd = SIOCGIWFREQ;
         iwe.u.freq.m = ieee80211_channel_to_freq(ieee, network->channel);
        iwe.u.freq.e = 6;
        iwe.u.freq.i = 0;
        start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_FREQ_LEN);

        /* Add encryption capability */
        iwe.cmd = SIOCGIWENCODE;
        if (network->capability & WLAN_CAPABILITY_PRIVACY)
                iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
        else
                iwe.u.data.flags = IW_ENCODE_DISABLED;
        iwe.u.data.length = 0;
        start = iwe_stream_add_point(info, start, stop,
                                     &iwe, network->ssid);

        /* Add basic and extended rates */
        /* Rate : stuffing multiple values in a single event require a bit
         * more of magic - Jean II */
        current_val = start + iwe_stream_lcp_len(info);
        iwe.cmd = SIOCGIWRATE;
        /* Those two flags are ignored... */
        iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;

        for (i = 0, j = 0; i < network->rates_len;) {
                if (j < network->rates_ex_len &&
                    ((network->rates_ex[j] & 0x7F) <
                     (network->rates[i] & 0x7F)))
                        rate = network->rates_ex[j++] & 0x7F;
                else
                        rate = network->rates[i++] & 0x7F;
                /* Bit rate given in 500 kb/s units (+ 0x80) */
                iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
                /* Add new value to event */
                current_val = iwe_stream_add_value(info, start, current_val,
                                                   stop, &iwe, IW_EV_PARAM_LEN);
        }
        for (; j < network->rates_ex_len; j++) {
                rate = network->rates_ex[j] & 0x7F;
                /* Bit rate given in 500 kb/s units (+ 0x80) */
                iwe.u.bitrate.value = ((rate & 0x7f) * 500000);
                /* Add new value to event */
                current_val = iwe_stream_add_value(info, start, current_val,
                                                   stop, &iwe, IW_EV_PARAM_LEN);
        }
        /* Check if we added any rate */
        if ((current_val - start) > iwe_stream_lcp_len(info))
                start = current_val;

        /* Add quality statistics */
        iwe.cmd = IWEVQUAL;
        iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED |
            IW_QUAL_NOISE_UPDATED;

        if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) {
                iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID |
                    IW_QUAL_LEVEL_INVALID;
                iwe.u.qual.qual = 0;
        } else {
                if (ieee->perfect_rssi == ieee->worst_rssi)
                        iwe.u.qual.qual = 100;
                else
                        iwe.u.qual.qual =
                            (100 *
                             (ieee->perfect_rssi - ieee->worst_rssi) *
                             (ieee->perfect_rssi - ieee->worst_rssi) -
                             (ieee->perfect_rssi - network->stats.rssi) *
                             (15 * (ieee->perfect_rssi - ieee->worst_rssi) +
                              62 * (ieee->perfect_rssi -
                                    network->stats.rssi))) /
                            ((ieee->perfect_rssi -
                              ieee->worst_rssi) * (ieee->perfect_rssi -
                                                   ieee->worst_rssi));
                if (iwe.u.qual.qual > 100)
                        iwe.u.qual.qual = 100;
                else if (iwe.u.qual.qual < 1)
                        iwe.u.qual.qual = 0;
        }

        if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) {
                iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
                iwe.u.qual.noise = 0;
        } else {
                iwe.u.qual.noise = network->stats.noise;
        }

        if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL)) {
                iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
                iwe.u.qual.level = 0;
        } else {
                iwe.u.qual.level = network->stats.signal;
        }

        start = iwe_stream_add_event(info, start, stop, &iwe, IW_EV_QUAL_LEN);

        iwe.cmd = IWEVCUSTOM;
        p = custom;

        iwe.u.data.length = p - custom;
        if (iwe.u.data.length)
                start = iwe_stream_add_point(info, start, stop, &iwe, custom);

        memset(&iwe, 0, sizeof(iwe));
        if (network->wpa_ie_len) {
                char buf[MAX_WPA_IE_LEN];
                memcpy(buf, network->wpa_ie, network->wpa_ie_len);
                iwe.cmd = IWEVGENIE;
                iwe.u.data.length = network->wpa_ie_len;
                start = iwe_stream_add_point(info, start, stop, &iwe, buf);
        }

        memset(&iwe, 0, sizeof(iwe));
        if (network->rsn_ie_len) {
                char buf[MAX_WPA_IE_LEN];
                memcpy(buf, network->rsn_ie, network->rsn_ie_len);
                iwe.cmd = IWEVGENIE;
                iwe.u.data.length = network->rsn_ie_len;
                start = iwe_stream_add_point(info, start, stop, &iwe, buf);
        }

        /* Add EXTRA: Age to display seconds since last beacon/probe response
         * for given network. */
        iwe.cmd = IWEVCUSTOM;
        p = custom;
        p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
                      " Last beacon: %dms ago",
                      jiffies_to_msecs(jiffies - network->last_scanned));
        iwe.u.data.length = p - custom;
        if (iwe.u.data.length)
                start = iwe_stream_add_point(info, start, stop, &iwe, custom);

        /* Add spectrum management information */
        iwe.cmd = -1;
        p = custom;
        p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Channel flags: ");

        if (ieee80211_get_channel_flags(ieee, network->channel) &
            IEEE80211_CH_INVALID) {
                iwe.cmd = IWEVCUSTOM;
                p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "INVALID ");
        }

        if (ieee80211_get_channel_flags(ieee, network->channel) &
            IEEE80211_CH_RADAR_DETECT) {
                iwe.cmd = IWEVCUSTOM;
                p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), "DFS ");
        }

        if (iwe.cmd == IWEVCUSTOM) {
                iwe.u.data.length = p - custom;
                start = iwe_stream_add_point(info, start, stop, &iwe, custom);
        }

        return start;
}

#define SCAN_ITEM_SIZE 128

int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
                          struct iw_request_info *info,
                          union iwreq_data *wrqu, char *extra)
{
        struct ieee80211_network *network;
        unsigned long flags;
        int err = 0;

        char *ev = extra;
        char *stop = ev + wrqu->data.length;
        int i = 0;
        DECLARE_MAC_BUF(mac);

        IEEE80211_DEBUG_WX("Getting scan\n");

        spin_lock_irqsave(&ieee->lock, flags);

        list_for_each_entry(network, &ieee->network_list, list) {
                i++;
                if (stop - ev < SCAN_ITEM_SIZE) {
                        err = -E2BIG;
                        break;
                }

                if (ieee->scan_age == 0 ||
                    time_after(network->last_scanned + ieee->scan_age, jiffies))
                        ev = ieee80211_translate_scan(ieee, ev, stop, network,
                                                      info);
                else
                        IEEE80211_DEBUG_SCAN("Not showing network '%s ("
                                             "%s)' due to age (%dms).\n",
                                             escape_essid(network->ssid,
                                                          network->ssid_len),
                                             print_mac(mac, network->bssid),
                                             jiffies_to_msecs(jiffies -
                                                              network->
                                                              last_scanned));
        }

        spin_unlock_irqrestore(&ieee->lock, flags);

        wrqu->data.length = ev - extra;
        wrqu->data.flags = 0;

        IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i);

        return err;
}

int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
                            struct iw_request_info *info,
                            union iwreq_data *wrqu, char *keybuf)
{
        struct iw_point *erq = &(wrqu->encoding);
        struct net_device *dev = ieee->dev;
        struct ieee80211_security sec = {
                .flags = 0
        };
        int i, key, key_provided, len;
        struct ieee80211_crypt_data **crypt;
        int host_crypto = ieee->host_encrypt || ieee->host_decrypt || ieee->host_build_iv;

        IEEE80211_DEBUG_WX("SET_ENCODE\n");

        key = erq->flags & IW_ENCODE_INDEX;
        if (key) {
                if (key > WEP_KEYS)
                        return -EINVAL;
                key--;
                key_provided = 1;
        } else {
                key_provided = 0;
                key = ieee->tx_keyidx;
        }

        IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
                           "provided" : "default");

        crypt = &ieee->crypt[key];

        if (erq->flags & IW_ENCODE_DISABLED) {
                if (key_provided && *crypt) {
                        IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n",
                                           key);
                        ieee80211_crypt_delayed_deinit(ieee, crypt);
                } else
                        IEEE80211_DEBUG_WX("Disabling encryption.\n");

                /* Check all the keys to see if any are still configured,
                 * and if no key index was provided, de-init them all */
                for (i = 0; i < WEP_KEYS; i++) {
                        if (ieee->crypt[i] != NULL) {
                                if (key_provided)
                                        break;
                                ieee80211_crypt_delayed_deinit(ieee,
                                                               &ieee->crypt[i]);
                        }
                }

                if (i == WEP_KEYS) {
                        sec.enabled = 0;
                        sec.encrypt = 0;
                        sec.level = SEC_LEVEL_0;
                        sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT;
                }

                goto done;
        }

        sec.enabled = 1;
        sec.encrypt = 1;
        sec.flags |= SEC_ENABLED | SEC_ENCRYPT;

        if (*crypt != NULL && (*crypt)->ops != NULL &&
            strcmp((*crypt)->ops->name, "WEP") != 0) {
                /* changing to use WEP; deinit previously used algorithm
                 * on this key */
                ieee80211_crypt_delayed_deinit(ieee, crypt);
        }

        if (*crypt == NULL && host_crypto) {
                struct ieee80211_crypt_data *new_crypt;

                /* take WEP into use */
                new_crypt = kzalloc(sizeof(struct ieee80211_crypt_data),
                                    GFP_KERNEL);
                if (new_crypt == NULL)
                        return -ENOMEM;
                new_crypt->ops = ieee80211_get_crypto_ops("WEP");
                if (!new_crypt->ops) {
                        request_module("ieee80211_crypt_wep");
                        new_crypt->ops = ieee80211_get_crypto_ops("WEP");
                }

                if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
                        new_crypt->priv = new_crypt->ops->init(key);

                if (!new_crypt->ops || !new_crypt->priv) {
                        kfree(new_crypt);
                        new_crypt = NULL;

                        printk(KERN_WARNING "%s: could not initialize WEP: "
                               "load module ieee80211_crypt_wep\n", dev->name);
                        return -EOPNOTSUPP;
                }
                *crypt = new_crypt;
        }

        /* If a new key was provided, set it up */
        if (erq->length > 0) {
                len = erq->length <= 5 ? 5 : 13;
                memcpy(sec.keys[key], keybuf, erq->length);
                if (len > erq->length)
                        memset(sec.keys[key] + erq->length, 0,
                               len - erq->length);
                IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n",
                                   key, escape_essid(sec.keys[key], len),
                                   erq->length, len);
                sec.key_sizes[key] = len;
                if (*crypt)
                        (*crypt)->ops->set_key(sec.keys[key], len, NULL,
                                               (*crypt)->priv);
                sec.flags |= (1 << key);
                /* This ensures a key will be activated if no key is
                 * explicitly set */
                if (key == sec.active_key)
                        sec.flags |= SEC_ACTIVE_KEY;

        } else {
                if (host_crypto) {
                        len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
                                                     NULL, (*crypt)->priv);
                        if (len == 0) {
                                /* Set a default key of all 0 */
                                IEEE80211_DEBUG_WX("Setting key %d to all "
                                                   "zero.\n", key);
                                memset(sec.keys[key], 0, 13);
                                (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
                                                       (*crypt)->priv);
                                sec.key_sizes[key] = 13;
                                sec.flags |= (1 << key);
                        }
                }
                /* No key data - just set the default TX key index */
                if (key_provided) {
                        IEEE80211_DEBUG_WX("Setting key %d to default Tx "
                                           "key.\n", key);
                        ieee->tx_keyidx = key;
                        sec.active_key = key;
                        sec.flags |= SEC_ACTIVE_KEY;
                }
        }
        if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) {
                ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
                sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN :
                    WLAN_AUTH_SHARED_KEY;
                sec.flags |= SEC_AUTH_MODE;
                IEEE80211_DEBUG_WX("Auth: %s\n",
                                   sec.auth_mode == WLAN_AUTH_OPEN ?
                                   "OPEN" : "SHARED KEY");
        }

        /* For now we just support WEP, so only set that security level...
         * TODO: When WPA is added this is one place that needs to change */
        sec.flags |= SEC_LEVEL;
        sec.level = SEC_LEVEL_1;        /* 40 and 104 bit WEP */
        sec.encode_alg[key] = SEC_ALG_WEP;

      done:
        if (ieee->set_security)
                ieee->set_security(dev, &sec);

        /* Do not reset port if card is in Managed mode since resetting will
         * generate new IEEE 802.11 authentication which may end up in looping
         * with IEEE 802.1X.  If your hardware requires a reset after WEP
         * configuration (for example... Prism2), implement the reset_port in
         * the callbacks structures used to initialize the 802.11 stack. */
        if (ieee->reset_on_keychange &&
            ieee->iw_mode != IW_MODE_INFRA &&
            ieee->reset_port && ieee->reset_port(dev)) {
                printk(KERN_DEBUG "%s: reset_port failed\n", dev->name);
                return -EINVAL;
        }
        return 0;
}

int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
                            struct iw_request_info *info,
                            union iwreq_data *wrqu, char *keybuf)
{
        struct iw_point *erq = &(wrqu->encoding);
        int len, key;
        struct ieee80211_crypt_data *crypt;
        struct ieee80211_security *sec = &ieee->sec;

        IEEE80211_DEBUG_WX("GET_ENCODE\n");

        key = erq->flags & IW_ENCODE_INDEX;
        if (key) {
                if (key > WEP_KEYS)
                        return -EINVAL;
                key--;
        } else
                key = ieee->tx_keyidx;

        crypt = ieee->crypt[key];
        erq->flags = key + 1;

        if (!sec->enabled) {
                erq->length = 0;
                erq->flags |= IW_ENCODE_DISABLED;
                return 0;
        }

        len = sec->key_sizes[key];
        memcpy(keybuf, sec->keys[key], len);

        erq->length = len;
        erq->flags |= IW_ENCODE_ENABLED;

        if (ieee->open_wep)
                erq->flags |= IW_ENCODE_OPEN;
        else
                erq->flags |= IW_ENCODE_RESTRICTED;

        return 0;
}

int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
                               struct iw_request_info *info,
                               union iwreq_data *wrqu, char *extra)
{
        struct net_device *dev = ieee->dev;
        struct iw_point *encoding = &wrqu->encoding;
        struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
        int i, idx, ret = 0;
        int group_key = 0;
        const char *alg, *module;
        struct ieee80211_crypto_ops *ops;
        struct ieee80211_crypt_data **crypt;

        struct ieee80211_security sec = {
                .flags = 0,
        };

        idx = encoding->flags & IW_ENCODE_INDEX;
        if (idx) {
                if (idx < 1 || idx > WEP_KEYS)
                        return -EINVAL;
                idx--;
        } else
                idx = ieee->tx_keyidx;

        if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) {
                crypt = &ieee->crypt[idx];
                group_key = 1;
        } else {
                /* some Cisco APs use idx>0 for unicast in dynamic WEP */
                if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
                        return -EINVAL;
                if (ieee->iw_mode == IW_MODE_INFRA)
                        crypt = &ieee->crypt[idx];
                else
                        return -EINVAL;
        }

        sec.flags |= SEC_ENABLED | SEC_ENCRYPT;
        if ((encoding->flags & IW_ENCODE_DISABLED) ||
            ext->alg == IW_ENCODE_ALG_NONE) {
                if (*crypt)
                        ieee80211_crypt_delayed_deinit(ieee, crypt);

                for (i = 0; i < WEP_KEYS; i++)
                        if (ieee->crypt[i] != NULL)
                                break;

                if (i == WEP_KEYS) {
                        sec.enabled = 0;
                        sec.encrypt = 0;
                        sec.level = SEC_LEVEL_0;
                        sec.flags |= SEC_LEVEL;
                }
                goto done;
        }

        sec.enabled = 1;
        sec.encrypt = 1;

        if (group_key ? !ieee->host_mc_decrypt :
            !(ieee->host_encrypt || ieee->host_decrypt ||
              ieee->host_encrypt_msdu))
                goto skip_host_crypt;

        switch (ext->alg) {
        case IW_ENCODE_ALG_WEP:
                alg = "WEP";
                module = "ieee80211_crypt_wep";
                break;
        case IW_ENCODE_ALG_TKIP:
                alg = "TKIP";
                module = "ieee80211_crypt_tkip";
                break;
        case IW_ENCODE_ALG_CCMP:
                alg = "CCMP";
                module = "ieee80211_crypt_ccmp";
                break;
        default:
                IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
                                   dev->name, ext->alg);
                ret = -EINVAL;
                goto done;
        }

        ops = ieee80211_get_crypto_ops(alg);
        if (ops == NULL) {
                request_module(module);
                ops = ieee80211_get_crypto_ops(alg);
        }
        if (ops == NULL) {
                IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n",
                                   dev->name, ext->alg);
                ret = -EINVAL;
                goto done;
        }

        if (*crypt == NULL || (*crypt)->ops != ops) {
                struct ieee80211_crypt_data *new_crypt;

                ieee80211_crypt_delayed_deinit(ieee, crypt);

                new_crypt = kzalloc(sizeof(*new_crypt), GFP_KERNEL);
                if (new_crypt == NULL) {
                        ret = -ENOMEM;
                        goto done;
                }
                new_crypt->ops = ops;
                if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
                        new_crypt->priv = new_crypt->ops->init(idx);
                if (new_crypt->priv == NULL) {
                        kfree(new_crypt);
                        ret = -EINVAL;
                        goto done;
                }
                *crypt = new_crypt;
        }

        if (ext->key_len > 0 && (*crypt)->ops->set_key &&
            (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq,
                                   (*crypt)->priv) < 0) {
                IEEE80211_DEBUG_WX("%s: key setting failed\n", dev->name);
                ret = -EINVAL;
                goto done;
        }

      skip_host_crypt:
        if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) {
                ieee->tx_keyidx = idx;
                sec.active_key = idx;
                sec.flags |= SEC_ACTIVE_KEY;
        }

        if (ext->alg != IW_ENCODE_ALG_NONE) {
                memcpy(sec.keys[idx], ext->key, ext->key_len);
                sec.key_sizes[idx] = ext->key_len;
                sec.flags |= (1 << idx);
                if (ext->alg == IW_ENCODE_ALG_WEP) {
                        sec.encode_alg[idx] = SEC_ALG_WEP;
                        sec.flags |= SEC_LEVEL;
                        sec.level = SEC_LEVEL_1;
                } else if (ext->alg == IW_ENCODE_ALG_TKIP) {
                        sec.encode_alg[idx] = SEC_ALG_TKIP;
                        sec.flags |= SEC_LEVEL;
                        sec.level = SEC_LEVEL_2;
                } else if (ext->alg == IW_ENCODE_ALG_CCMP) {
                        sec.encode_alg[idx] = SEC_ALG_CCMP;
                        sec.flags |= SEC_LEVEL;
                        sec.level = SEC_LEVEL_3;
                }
                /* Don't set sec level for group keys. */
                if (group_key)
                        sec.flags &= ~SEC_LEVEL;
        }
      done:
        if (ieee->set_security)
                ieee->set_security(ieee->dev, &sec);

        /*
         * Do not reset port if card is in Managed mode since resetting will
         * generate new IEEE 802.11 authentication which may end up in looping
         * with IEEE 802.1X. If your hardware requires a reset after WEP
         * configuration (for example... Prism2), implement the reset_port in
         * the callbacks structures used to initialize the 802.11 stack.
         */
        if (ieee->reset_on_keychange &&
            ieee->iw_mode != IW_MODE_INFRA &&
            ieee->reset_port && ieee->reset_port(dev)) {
                IEEE80211_DEBUG_WX("%s: reset_port failed\n", dev->name);
                return -EINVAL;
        }

        return ret;
}

int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
                               struct iw_request_info *info,
                               union iwreq_data *wrqu, char *extra)
{
        struct iw_point *encoding = &wrqu->encoding;
        struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
        struct ieee80211_security *sec = &ieee->sec;
        int idx, max_key_len;

        max_key_len = encoding->length - sizeof(*ext);
        if (max_key_len < 0)
                return -EINVAL;

        idx = encoding->flags & IW_ENCODE_INDEX;
        if (idx) {
                if (idx < 1 || idx > WEP_KEYS)
                        return -EINVAL;
                idx--;
        } else
                idx = ieee->tx_keyidx;

        if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) &&
            ext->alg != IW_ENCODE_ALG_WEP)
                if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
                        return -EINVAL;

        encoding->flags = idx + 1;
        memset(ext, 0, sizeof(*ext));

        if (!sec->enabled) {
                ext->alg = IW_ENCODE_ALG_NONE;
                ext->key_len = 0;
                encoding->flags |= IW_ENCODE_DISABLED;
        } else {
                if (sec->encode_alg[idx] == SEC_ALG_WEP)
                        ext->alg = IW_ENCODE_ALG_WEP;
                else if (sec->encode_alg[idx] == SEC_ALG_TKIP)
                        ext->alg = IW_ENCODE_ALG_TKIP;
                else if (sec->encode_alg[idx] == SEC_ALG_CCMP)
                        ext->alg = IW_ENCODE_ALG_CCMP;
                else
                        return -EINVAL;

                ext->key_len = sec->key_sizes[idx];
                memcpy(ext->key, sec->keys[idx], ext->key_len);
                encoding->flags |= IW_ENCODE_ENABLED;
                if (ext->key_len &&
                    (ext->alg == IW_ENCODE_ALG_TKIP ||
                     ext->alg == IW_ENCODE_ALG_CCMP))
                        ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID;

        }

        return 0;
}

EXPORT_SYMBOL(ieee80211_wx_set_encodeext);
EXPORT_SYMBOL(ieee80211_wx_get_encodeext);

EXPORT_SYMBOL(ieee80211_wx_get_scan);
EXPORT_SYMBOL(ieee80211_wx_set_encode);
EXPORT_SYMBOL(ieee80211_wx_get_encode);