// SPDX-License-Identifier: GPL-2.0
/******************************************************************************
 *
 * This file contains wireless extension handlers.
 *
 * This is part of rtl8180 OpenSource driver.
 * Copyright (C) Andrea Merello 2004-2005  <andrea.merello@gmail.com>
 *
 * Parts of this driver are based on the GPL part
 * of the official realtek driver.
 *
 * Parts of this driver are based on the rtl8180 driver skeleton
 * from Patric Schenke & Andres Salomon.
 *
 * Parts of this driver are based on the Intel Pro Wireless 2100 GPL driver.
 *
 * We want to thank the Authors of those projects and the Ndiswrapper
 * project Authors.
 *
 *****************************************************************************/

#include <linux/string.h>
#include "r8192U.h"
#include "r8192U_hw.h"

#include "ieee80211/dot11d.h"
#include "r8192U_wx.h"

#define RATE_COUNT 12
static const u32 rtl8180_rates[] = {1000000, 2000000, 5500000, 11000000,
        6000000, 9000000, 12000000, 18000000, 24000000, 36000000, 48000000, 54000000};

#ifndef ENETDOWN
#define ENETDOWN 1
#endif

static int r8192_wx_get_freq(struct net_device *dev,
                             struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        return ieee80211_wx_get_freq(priv->ieee80211, a, wrqu, b);
}

static int r8192_wx_get_mode(struct net_device *dev, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        return ieee80211_wx_get_mode(priv->ieee80211, a, wrqu, b);
}

static int r8192_wx_get_rate(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        return ieee80211_wx_get_rate(priv->ieee80211, info, wrqu, extra);
}

static int r8192_wx_set_rate(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra)
{
        int ret;
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_set_rate(priv->ieee80211, info, wrqu, extra);

        mutex_unlock(&priv->wx_mutex);

        return ret;
}

static int r8192_wx_set_rts(struct net_device *dev,
                            struct iw_request_info *info,
                            union iwreq_data *wrqu, char *extra)
{
        int ret;
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_set_rts(priv->ieee80211, info, wrqu, extra);

        mutex_unlock(&priv->wx_mutex);

        return ret;
}

static int r8192_wx_get_rts(struct net_device *dev,
                            struct iw_request_info *info,
                            union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        return ieee80211_wx_get_rts(priv->ieee80211, info, wrqu, extra);
}

static int r8192_wx_set_power(struct net_device *dev,
                              struct iw_request_info *info,
                              union iwreq_data *wrqu, char *extra)
{
        int ret;
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_set_power(priv->ieee80211, info, wrqu, extra);

        mutex_unlock(&priv->wx_mutex);

        return ret;
}

static int r8192_wx_get_power(struct net_device *dev,
                              struct iw_request_info *info,
                              union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        return ieee80211_wx_get_power(priv->ieee80211, info, wrqu, extra);
}

static int r8192_wx_force_reset(struct net_device *dev,
                                struct iw_request_info *info,
                                union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);

        netdev_dbg(dev, "%s(): force reset ! extra is %d\n", __func__, *extra);
        priv->force_reset = *extra;
        mutex_unlock(&priv->wx_mutex);
        return 0;
}

static int r8192_wx_set_rawtx(struct net_device *dev,
                              struct iw_request_info *info,
                              union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        int ret;

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_set_rawtx(priv->ieee80211, info, wrqu, extra);

        mutex_unlock(&priv->wx_mutex);

        return ret;
}

static int r8192_wx_set_crcmon(struct net_device *dev,
                               struct iw_request_info *info,
                               union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        int *parms = (int *)extra;
        int enable = (parms[0] > 0);

        mutex_lock(&priv->wx_mutex);

        if (enable)
                priv->crcmon = 1;
        else
                priv->crcmon = 0;

        DMESG("bad CRC in monitor mode are %s",
              priv->crcmon ? "accepted" : "rejected");

        mutex_unlock(&priv->wx_mutex);

        return 0;
}

static int r8192_wx_set_mode(struct net_device *dev, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        int ret;

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_set_mode(priv->ieee80211, a, wrqu, b);

        rtl8192_set_rxconf(dev);

        mutex_unlock(&priv->wx_mutex);
        return ret;
}

struct  iw_range_with_scan_capa {
        /* Informative stuff (to choose between different interface) */
        __u32           throughput;     /* To give an idea... */
        /* In theory this value should be the maximum benchmarked
         * TCP/IP throughput, because with most of these devices the
         * bit rate is meaningless (overhead an co) to estimate how
         * fast the connection will go and pick the fastest one.
         * I suggest people to play with Netperf or any benchmark...
         */

        /* NWID (or domain id) */
        __u32           min_nwid;       /* Minimal NWID we are able to set */
        __u32           max_nwid;       /* Maximal NWID we are able to set */

        /* Old Frequency (backward compat - moved lower ) */
        __u16           old_num_channels;
        __u8            old_num_frequency;

        /* Scan capabilities */
        __u8            scan_capa;
};

static int rtl8180_wx_get_range(struct net_device *dev,
                                struct iw_request_info *info,
                                union iwreq_data *wrqu, char *extra)
{
        struct iw_range *range = (struct iw_range *)extra;
        struct iw_range_with_scan_capa *tmp = (struct iw_range_with_scan_capa *)range;
        struct r8192_priv *priv = ieee80211_priv(dev);
        u16 val;
        int i;

        wrqu->data.length = sizeof(*range);
        memset(range, 0, sizeof(*range));

        /* Let's try to keep this struct in the same order as in
         * linux/include/wireless.h
         */

        /* TODO: See what values we can set, and remove the ones we can't
         * set, or fill them with some default data.
         */

        /* ~5 Mb/s real (802.11b) */
        range->throughput = 5 * 1000 * 1000;

        /* TODO: Not used in 802.11b? */
        /* range->min_nwid; */  /* Minimal NWID we are able to set */
        /* TODO: Not used in 802.11b? */
        /* range->max_nwid; */  /* Maximal NWID we are able to set */

        /* Old Frequency (backward compat - moved lower ) */
        /* range->old_num_channels; */
        /* range->old_num_frequency; */
        /* range->old_freq[6]; */ /* Filler to keep "version" at the same offset */
        if (priv->rf_set_sens)
                range->sensitivity = priv->max_sens;    /* signal level threshold range */

        range->max_qual.qual = 100;
        /* TODO: Find real max RSSI and stick here */
        range->max_qual.level = 0;
        range->max_qual.noise = 0x100 - 98;
        range->max_qual.updated = 7; /* Updated all three */

        range->avg_qual.qual = 92; /* > 8% missed beacons is 'bad' */
        /* TODO: Find real 'good' to 'bad' threshold value for RSSI */
        range->avg_qual.level = 0x100 - 78;
        range->avg_qual.noise = 0;
        range->avg_qual.updated = 7; /* Updated all three */

        range->num_bitrates = RATE_COUNT;

        for (i = 0; i < RATE_COUNT && i < IW_MAX_BITRATES; i++)
                range->bitrate[i] = rtl8180_rates[i];

        range->min_frag = MIN_FRAG_THRESHOLD;
        range->max_frag = MAX_FRAG_THRESHOLD;

        range->min_pmp = 0;
        range->max_pmp = 5000000;
        range->min_pmt = 0;
        range->max_pmt = 65535 * 1000;
        range->pmp_flags = IW_POWER_PERIOD;
        range->pmt_flags = IW_POWER_TIMEOUT;
        range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_ALL_R;

        range->we_version_compiled = WIRELESS_EXT;
        range->we_version_source = 16;

        /* range->retry_capa; */        /* What retry options are supported */
        /* range->retry_flags; */       /* How to decode max/min retry limit */
        /* range->r_time_flags; */      /* How to decode max/min retry life */
        /* range->min_retry; */         /* Minimal number of retries */
        /* range->max_retry; */         /* Maximal number of retries */
        /* range->min_r_time; */        /* Minimal retry lifetime */
        /* range->max_r_time; */        /* Maximal retry lifetime */

        for (i = 0, val = 0; i < 14; i++) {
                /* Include only legal frequencies for some countries */
                if ((GET_DOT11D_INFO(priv->ieee80211)->channel_map)[i + 1]) {
                        range->freq[val].i = i + 1;
                        range->freq[val].m = ieee80211_wlan_frequencies[i] * 100000;
                        range->freq[val].e = 1;
                        val++;
                } else {
                        /* FIXME: do we need to set anything for channels */
                        /* we don't use ? */
                }

                if (val == IW_MAX_FREQUENCIES)
                        break;
        }
        range->num_frequency = val;
        range->num_channels = val;
        range->enc_capa = IW_ENC_CAPA_WPA | IW_ENC_CAPA_WPA2 |
                          IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP;
        tmp->scan_capa = 0x01;
        return 0;
}

static int r8192_wx_set_scan(struct net_device *dev, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        struct ieee80211_device *ieee = priv->ieee80211;
        int ret = 0;

        if (!priv->up)
                return -ENETDOWN;

        if (priv->ieee80211->LinkDetectInfo.bBusyTraffic)
                return -EAGAIN;
        if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
                struct iw_scan_req *req = (struct iw_scan_req *)b;

                if (req->essid_len) {
                        int len = min_t(int, req->essid_len, IW_ESSID_MAX_SIZE);

                        ieee->current_network.ssid_len = len;
                        memcpy(ieee->current_network.ssid, req->essid, len);
                }
        }

        mutex_lock(&priv->wx_mutex);
        if (priv->ieee80211->state != IEEE80211_LINKED) {
                priv->ieee80211->scanning = 0;
                ieee80211_softmac_scan_syncro(priv->ieee80211);
                ret = 0;
        } else {
                ret = ieee80211_wx_set_scan(priv->ieee80211, a, wrqu, b);
        }
        mutex_unlock(&priv->wx_mutex);
        return ret;
}

static int r8192_wx_get_scan(struct net_device *dev, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b)
{
        int ret;
        struct r8192_priv *priv = ieee80211_priv(dev);

        if (!priv->up)
                return -ENETDOWN;

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_get_scan(priv->ieee80211, a, wrqu, b);

        mutex_unlock(&priv->wx_mutex);

        return ret;
}

static int r8192_wx_set_essid(struct net_device *dev,
                              struct iw_request_info *a,
                              union iwreq_data *wrqu, char *b)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        int ret;

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_set_essid(priv->ieee80211, a, wrqu, b);

        mutex_unlock(&priv->wx_mutex);

        return ret;
}

static int r8192_wx_get_essid(struct net_device *dev,
                              struct iw_request_info *a,
                              union iwreq_data *wrqu, char *b)
{
        int ret;
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_get_essid(priv->ieee80211, a, wrqu, b);

        mutex_unlock(&priv->wx_mutex);

        return ret;
}

static int r8192_wx_set_freq(struct net_device *dev, struct iw_request_info *a,
                             union iwreq_data *wrqu, char *b)
{
        int ret;
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_set_freq(priv->ieee80211, a, wrqu, b);

        mutex_unlock(&priv->wx_mutex);
        return ret;
}

static int r8192_wx_get_name(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        return ieee80211_wx_get_name(priv->ieee80211, info, wrqu, extra);
}

static int r8192_wx_set_frag(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        if (wrqu->frag.disabled) {
                priv->ieee80211->fts = DEFAULT_FRAG_THRESHOLD;
        } else {
                if (wrqu->frag.value < MIN_FRAG_THRESHOLD ||
                    wrqu->frag.value > MAX_FRAG_THRESHOLD)
                        return -EINVAL;

                priv->ieee80211->fts = wrqu->frag.value & ~0x1;
        }

        return 0;
}

static int r8192_wx_get_frag(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        wrqu->frag.value = priv->ieee80211->fts;
        wrqu->frag.fixed = 0;   /* no auto select */
        wrqu->frag.disabled = (wrqu->frag.value == DEFAULT_FRAG_THRESHOLD);

        return 0;
}

static int r8192_wx_set_wap(struct net_device *dev,
                            struct iw_request_info *info,
                            union iwreq_data *awrq,
                            char *extra)
{
        int ret;
        struct r8192_priv *priv = ieee80211_priv(dev);
        /* struct sockaddr *temp = (struct sockaddr *)awrq; */
        mutex_lock(&priv->wx_mutex);

        ret = ieee80211_wx_set_wap(priv->ieee80211, info, awrq, extra);

        mutex_unlock(&priv->wx_mutex);

        return ret;
}

static int r8192_wx_get_wap(struct net_device *dev,
                            struct iw_request_info *info,
                            union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        return ieee80211_wx_get_wap(priv->ieee80211, info, wrqu, extra);
}

static int r8192_wx_get_enc(struct net_device *dev,
                            struct iw_request_info *info,
                            union iwreq_data *wrqu, char *key)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        return ieee80211_wx_get_encode(priv->ieee80211, info, wrqu, key);
}

static int r8192_wx_set_enc(struct net_device *dev,
                            struct iw_request_info *info,
                            union iwreq_data *wrqu, char *key)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        struct ieee80211_device *ieee = priv->ieee80211;
        int ret;
        u32 hwkey[4] = {0, 0, 0, 0};
        u8 mask = 0xff;
        u32 key_idx = 0;
        u8 zero_addr[4][6] = {  {0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
                                {0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
                                {0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
                                {0x00, 0x00, 0x00, 0x00, 0x00, 0x03} };
        int i;

        if (!priv->up)
                return -ENETDOWN;

        mutex_lock(&priv->wx_mutex);

        RT_TRACE(COMP_SEC, "Setting SW wep key");
        ret = ieee80211_wx_set_encode(priv->ieee80211, info, wrqu, key);

        mutex_unlock(&priv->wx_mutex);

        /* sometimes, the length is zero while we do not type key value */
        if (wrqu->encoding.length != 0) {
                for (i = 0; i < 4; i++) {
                        hwkey[i] |=  key[4 * i + 0] & mask;
                        if (i == 1 && (4 * i + 1) == wrqu->encoding.length)
                                mask = 0x00;
                        if (i == 3 && (4 * i + 1) == wrqu->encoding.length)
                                mask = 0x00;
                        hwkey[i] |= (key[4 * i + 1] & mask) << 8;
                        hwkey[i] |= (key[4 * i + 2] & mask) << 16;
                        hwkey[i] |= (key[4 * i + 3] & mask) << 24;
                }

                #define CONF_WEP40  0x4
                #define CONF_WEP104 0x14

                switch (wrqu->encoding.flags & IW_ENCODE_INDEX) {
                case 0:
                        key_idx = ieee->tx_keyidx;
                        break;
                case 1:
                        key_idx = 0;
                        break;
                case 2:
                        key_idx = 1;
                        break;
                case 3:
                        key_idx = 2;
                        break;
                case 4:
                        key_idx = 3;
                        break;
                default:
                        break;
                }

                if (wrqu->encoding.length == 0x5) {
                        ieee->pairwise_key_type = KEY_TYPE_WEP40;
                        EnableHWSecurityConfig8192(dev);

                        setKey(dev,
                               key_idx,                /* EntryNo */
                               key_idx,                /* KeyIndex */
                               KEY_TYPE_WEP40,         /* KeyType */
                               zero_addr[key_idx],
                               0,                      /* DefaultKey */
                               hwkey);                 /* KeyContent */
                } else if (wrqu->encoding.length == 0xd) {
                        ieee->pairwise_key_type = KEY_TYPE_WEP104;
                        EnableHWSecurityConfig8192(dev);

                        setKey(dev,
                               key_idx,                /* EntryNo */
                               key_idx,                /* KeyIndex */
                               KEY_TYPE_WEP104,        /* KeyType */
                               zero_addr[key_idx],
                               0,                      /* DefaultKey */
                               hwkey);                 /* KeyContent */
                } else {
                        netdev_warn(dev, "wrong type in WEP, not WEP40 and WEP104\n");
                }
        }

        return ret;
}

static int r8192_wx_set_scan_type(struct net_device *dev, struct iw_request_info *aa,
                                  union iwreq_data *wrqu, char *p)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        int *parms = (int *)p;
        int mode = parms[0];

        priv->ieee80211->active_scan = mode;

        return 1;
}

static int r8192_wx_set_retry(struct net_device *dev,
                              struct iw_request_info *info,
                              union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        int err = 0;

        mutex_lock(&priv->wx_mutex);

        if (wrqu->retry.flags & IW_RETRY_LIFETIME ||
            wrqu->retry.disabled){
                err = -EINVAL;
                goto exit;
        }
        if (!(wrqu->retry.flags & IW_RETRY_LIMIT)) {
                err = -EINVAL;
                goto exit;
        }

        if (wrqu->retry.value > R8180_MAX_RETRY) {
                err = -EINVAL;
                goto exit;
        }
        if (wrqu->retry.flags & IW_RETRY_MAX) {
                priv->retry_rts = wrqu->retry.value;
                DMESG("Setting retry for RTS/CTS data to %d", wrqu->retry.value);

        } else {
                priv->retry_data = wrqu->retry.value;
                DMESG("Setting retry for non RTS/CTS data to %d", wrqu->retry.value);
        }

        /* FIXME !
         * We might try to write directly the TX config register
         * or to restart just the (R)TX process.
         * I'm unsure if whole reset is really needed
         */

        rtl8192_commit(dev);
exit:
        mutex_unlock(&priv->wx_mutex);

        return err;
}

static int r8192_wx_get_retry(struct net_device *dev,
                              struct iw_request_info *info,
                              union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        wrqu->retry.disabled = 0; /* can't be disabled */

        if ((wrqu->retry.flags & IW_RETRY_TYPE) ==
            IW_RETRY_LIFETIME)
                return -EINVAL;

        if (wrqu->retry.flags & IW_RETRY_MAX) {
                wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
                wrqu->retry.value = priv->retry_rts;
        } else {
                wrqu->retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
                wrqu->retry.value = priv->retry_data;
        }

        return 0;
}

static int r8192_wx_get_sens(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);

        if (!priv->rf_set_sens)
                return -1; /* we have not this support for this radio */
        wrqu->sens.value = priv->sens;
        return 0;
}

static int r8192_wx_set_sens(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        short err = 0;

        mutex_lock(&priv->wx_mutex);
        if (!priv->rf_set_sens) {
                err = -1; /* we have not this support for this radio */
                goto exit;
        }
        if (priv->rf_set_sens(dev, wrqu->sens.value) == 0)
                priv->sens = wrqu->sens.value;
        else
                err = -EINVAL;

exit:
        mutex_unlock(&priv->wx_mutex);

        return err;
}

/* hw security need to reorganized. */
static int r8192_wx_set_enc_ext(struct net_device *dev,
                                struct iw_request_info *info,
                                union iwreq_data *wrqu, char *extra)
{
        int ret = 0;
        struct r8192_priv *priv = ieee80211_priv(dev);
        struct ieee80211_device *ieee = priv->ieee80211;

        mutex_lock(&priv->wx_mutex);
        ret = ieee80211_wx_set_encode_ext(priv->ieee80211, info, wrqu, extra);

        {
                u8 broadcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
                u8 zero[6] = {0};
                u32 key[4] = {0};
                struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
                struct iw_point *encoding = &wrqu->encoding;
                u8 idx = 0, alg = 0, group = 0;

                if ((encoding->flags & IW_ENCODE_DISABLED) || ext->alg == IW_ENCODE_ALG_NONE)
                        /* none is not allowed to use hwsec WB 2008.07.01 */
                        goto end_hw_sec;

                /* as IW_ENCODE_ALG_CCMP is defined to be 3 and KEY_TYPE_CCMP is defined to 4; */
                alg =  (ext->alg == IW_ENCODE_ALG_CCMP) ? KEY_TYPE_CCMP : ext->alg;
                idx = encoding->flags & IW_ENCODE_INDEX;
                if (idx)
                        idx--;
                group = ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY;

                if ((!group) || (ieee->iw_mode == IW_MODE_ADHOC) || (alg ==  KEY_TYPE_WEP40)) {
                        if ((ext->key_len == 13) && (alg == KEY_TYPE_WEP40))
                                alg = KEY_TYPE_WEP104;
                        ieee->pairwise_key_type = alg;
                        EnableHWSecurityConfig8192(dev);
                }
                memcpy((u8 *)key, ext->key, 16); /* we only get 16 bytes key.why? WB 2008.7.1 */

                if ((alg & KEY_TYPE_WEP40) && (ieee->auth_mode != 2)) {
                        setKey(dev,
                               idx,     /* EntryNao */
                               idx,     /* KeyIndex */
                               alg,     /* KeyType */
                               zero,    /* MacAddr */
                               0,       /* DefaultKey */
                               key);    /* KeyContent */
                } else if (group) {
                        ieee->group_key_type = alg;
                        setKey(dev,
                               idx,     /* EntryNo */
                               idx,     /* KeyIndex */
                               alg,     /* KeyType */
                               broadcast_addr,  /* MacAddr */
                               0,               /* DefaultKey */
                               key);            /* KeyContent */
                } else {        /* pairwise key */
                        setKey(dev,
                               4,       /* EntryNo */
                               idx,     /* KeyIndex */
                               alg,     /* KeyType */
                               (u8 *)ieee->ap_mac_addr,/* MacAddr */
                               0,                       /* DefaultKey */
                               key);                    /* KeyContent */
                }
        }

end_hw_sec:

        mutex_unlock(&priv->wx_mutex);
        return ret;
}

static int r8192_wx_set_auth(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *data, char *extra)
{
        int ret = 0;
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);
        ret = ieee80211_wx_set_auth(priv->ieee80211, info, &data->param, extra);
        mutex_unlock(&priv->wx_mutex);
        return ret;
}

static int r8192_wx_set_mlme(struct net_device *dev,
                             struct iw_request_info *info,
                             union iwreq_data *wrqu, char *extra)
{
        int ret = 0;
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);
        ret = ieee80211_wx_set_mlme(priv->ieee80211, info, wrqu, extra);

        mutex_unlock(&priv->wx_mutex);
        return ret;
}

static int r8192_wx_set_gen_ie(struct net_device *dev,
                               struct iw_request_info *info,
                               union iwreq_data *data, char *extra)
{
        int ret = 0;
        struct r8192_priv *priv = ieee80211_priv(dev);

        mutex_lock(&priv->wx_mutex);
        ret = ieee80211_wx_set_gen_ie(priv->ieee80211, extra, data->data.length);
        mutex_unlock(&priv->wx_mutex);
        return ret;
}

static int dummy(struct net_device *dev, struct iw_request_info *a,
                 union iwreq_data *wrqu, char *b)
{
        return -1;
}

static iw_handler r8192_wx_handlers[] = {
        NULL,                     /* SIOCSIWCOMMIT */
        r8192_wx_get_name,        /* SIOCGIWNAME */
        dummy,                    /* SIOCSIWNWID */
        dummy,                    /* SIOCGIWNWID */
        r8192_wx_set_freq,        /* SIOCSIWFREQ */
        r8192_wx_get_freq,        /* SIOCGIWFREQ */
        r8192_wx_set_mode,        /* SIOCSIWMODE */
        r8192_wx_get_mode,        /* SIOCGIWMODE */
        r8192_wx_set_sens,        /* SIOCSIWSENS */
        r8192_wx_get_sens,        /* SIOCGIWSENS */
        NULL,                     /* SIOCSIWRANGE */
        rtl8180_wx_get_range,     /* SIOCGIWRANGE */
        NULL,                     /* SIOCSIWPRIV */
        NULL,                     /* SIOCGIWPRIV */
        NULL,                     /* SIOCSIWSTATS */
        NULL,                     /* SIOCGIWSTATS */
        dummy,                    /* SIOCSIWSPY */
        dummy,                    /* SIOCGIWSPY */
        NULL,                     /* SIOCGIWTHRSPY */
        NULL,                     /* SIOCWIWTHRSPY */
        r8192_wx_set_wap,         /* SIOCSIWAP */
        r8192_wx_get_wap,         /* SIOCGIWAP */
        r8192_wx_set_mlme,                     /* MLME-- */
        dummy,                     /* SIOCGIWAPLIST -- deprecated */
        r8192_wx_set_scan,        /* SIOCSIWSCAN */
        r8192_wx_get_scan,        /* SIOCGIWSCAN */
        r8192_wx_set_essid,       /* SIOCSIWESSID */
        r8192_wx_get_essid,       /* SIOCGIWESSID */
        dummy,                    /* SIOCSIWNICKN */
        dummy,                    /* SIOCGIWNICKN */
        NULL,                     /* -- hole -- */
        NULL,                     /* -- hole -- */
        r8192_wx_set_rate,        /* SIOCSIWRATE */
        r8192_wx_get_rate,        /* SIOCGIWRATE */
        r8192_wx_set_rts,                    /* SIOCSIWRTS */
        r8192_wx_get_rts,                    /* SIOCGIWRTS */
        r8192_wx_set_frag,        /* SIOCSIWFRAG */
        r8192_wx_get_frag,        /* SIOCGIWFRAG */
        dummy,                    /* SIOCSIWTXPOW */
        dummy,                    /* SIOCGIWTXPOW */
        r8192_wx_set_retry,       /* SIOCSIWRETRY */
        r8192_wx_get_retry,       /* SIOCGIWRETRY */
        r8192_wx_set_enc,         /* SIOCSIWENCODE */
        r8192_wx_get_enc,         /* SIOCGIWENCODE */
        r8192_wx_set_power,                    /* SIOCSIWPOWER */
        r8192_wx_get_power,                    /* SIOCGIWPOWER */
        NULL,                   /*---hole---*/
        NULL,                   /*---hole---*/
        r8192_wx_set_gen_ie, /* NULL, */                /* SIOCSIWGENIE */
        NULL,                   /* SIOCSIWGENIE */

        r8192_wx_set_auth,/* NULL, */                   /* SIOCSIWAUTH */
        NULL,/* r8192_wx_get_auth, */ /* NULL, */       /* SIOCSIWAUTH */
        r8192_wx_set_enc_ext,                   /* SIOCSIWENCODEEXT */
        NULL,/* r8192_wx_get_enc_ext, *//* NULL, */                     /* SIOCSIWENCODEEXT */
        NULL,                   /* SIOCSIWPMKSA */
        NULL,                    /*---hole---*/

};

static const struct iw_priv_args r8192_private_args[] = {
        {
                SIOCIWFIRSTPRIV + 0x0,
                IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "badcrc"
        },
        {
                SIOCIWFIRSTPRIV + 0x1,
                IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "activescan"

        },
        {
                SIOCIWFIRSTPRIV + 0x2,
                IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "rawtx"
        },
        {
                SIOCIWFIRSTPRIV + 0x3,
                IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "forcereset"
        }
};

static iw_handler r8192_private_handler[] = {
        r8192_wx_set_crcmon,
        r8192_wx_set_scan_type,
        r8192_wx_set_rawtx,
        r8192_wx_force_reset,
};

struct iw_statistics *r8192_get_wireless_stats(struct net_device *dev)
{
        struct r8192_priv *priv = ieee80211_priv(dev);
        struct ieee80211_device *ieee = priv->ieee80211;
        struct iw_statistics *wstats = &priv->wstats;
        int tmp_level = 0;
        int tmp_qual = 0;
        int tmp_noise = 0;

        if (ieee->state < IEEE80211_LINKED) {
                wstats->qual.qual = 0;
                wstats->qual.level = 0;
                wstats->qual.noise = 0;
                wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
                return wstats;
        }

        tmp_level = (&ieee->current_network)->stats.rssi;
        tmp_qual = (&ieee->current_network)->stats.signal;
        tmp_noise = (&ieee->current_network)->stats.noise;

        wstats->qual.level = tmp_level;
        wstats->qual.qual = tmp_qual;
        wstats->qual.noise = tmp_noise;
        wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
        return wstats;
}

const struct iw_handler_def  r8192_wx_handlers_def = {
        .standard = r8192_wx_handlers,
        .num_standard = ARRAY_SIZE(r8192_wx_handlers),
        .private = r8192_private_handler,
        .num_private = ARRAY_SIZE(r8192_private_handler),
        .num_private_args = sizeof(r8192_private_args) / sizeof(struct iw_priv_args),
        .get_wireless_stats = r8192_get_wireless_stats,
        .private_args = (struct iw_priv_args *)r8192_private_args,
};