/******************************************************************************
 * rtl871x_mlme.c
 *
 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
 * Linux device driver for RTL8192SU
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * Modifications for inclusion into the Linux staging tree are
 * Copyright(c) 2010 Larry Finger. All rights reserved.
 *
 * Contact information:
 * WLAN FAE <wlanfae@realtek.com>
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 ******************************************************************************/

#define _RTL871X_MLME_C_

#include <linux/etherdevice.h>

#include "osdep_service.h"
#include "drv_types.h"
#include "recv_osdep.h"
#include "xmit_osdep.h"
#include "mlme_osdep.h"
#include "sta_info.h"
#include "wifi.h"
#include "wlan_bssdef.h"

static void update_ht_cap(struct _adapter *padapter, u8 *pie, uint ie_len);

static sint _init_mlme_priv(struct _adapter *padapter)
{
        sint    i;
        u8      *pbuf;
        struct wlan_network     *pnetwork;
        struct  mlme_priv *pmlmepriv = &padapter->mlmepriv;

        memset((u8 *)pmlmepriv, 0, sizeof(struct mlme_priv));
        pmlmepriv->nic_hdl = (u8 *)padapter;
        pmlmepriv->pscanned = NULL;
        pmlmepriv->fw_state = 0;
        pmlmepriv->cur_network.network.InfrastructureMode =
                                 Ndis802_11AutoUnknown;
        /* Maybe someday we should rename this variable to "active_mode"(Jeff)*/
        pmlmepriv->passive_mode = 1; /* 1: active, 0: passive. */
        spin_lock_init(&(pmlmepriv->lock));
        spin_lock_init(&(pmlmepriv->lock2));
        _init_queue(&(pmlmepriv->free_bss_pool));
        _init_queue(&(pmlmepriv->scanned_queue));
        set_scanned_network_val(pmlmepriv, 0);
        memset(&pmlmepriv->assoc_ssid, 0, sizeof(struct ndis_802_11_ssid));
        pbuf = kmalloc_array(MAX_BSS_CNT, sizeof(struct wlan_network),
                             GFP_ATOMIC);
        if (!pbuf)
                return _FAIL;
        pmlmepriv->free_bss_buf = pbuf;
        pnetwork = (struct wlan_network *)pbuf;
        for (i = 0; i < MAX_BSS_CNT; i++) {
                INIT_LIST_HEAD(&(pnetwork->list));
                list_add_tail(&(pnetwork->list),
                                 &(pmlmepriv->free_bss_pool.queue));
                pnetwork++;
        }
        pmlmepriv->sitesurveyctrl.last_rx_pkts = 0;
        pmlmepriv->sitesurveyctrl.last_tx_pkts = 0;
        pmlmepriv->sitesurveyctrl.traffic_busy = false;
        /* allocate DMA-able/Non-Page memory for cmd_buf and rsp_buf */
        r8712_init_mlme_timer(padapter);
        return _SUCCESS;
}

struct wlan_network *_r8712_alloc_network(struct mlme_priv *pmlmepriv)
{
        unsigned long irqL;
        struct wlan_network *pnetwork;
        struct  __queue *free_queue = &pmlmepriv->free_bss_pool;

        spin_lock_irqsave(&free_queue->lock, irqL);
        pnetwork = list_first_entry_or_null(&free_queue->queue,
                                            struct wlan_network, list);
        if (pnetwork) {
                list_del_init(&pnetwork->list);
                pnetwork->last_scanned = jiffies;
                pmlmepriv->num_of_scanned++;
        }
        spin_unlock_irqrestore(&free_queue->lock, irqL);
        return pnetwork;
}

static void _free_network(struct mlme_priv *pmlmepriv,
                          struct wlan_network *pnetwork)
{
        u32 curr_time, delta_time;
        unsigned long irqL;
        struct  __queue *free_queue = &(pmlmepriv->free_bss_pool);

        if (pnetwork == NULL)
                return;
        if (pnetwork->fixed)
                return;
        curr_time = jiffies;
        delta_time = (curr_time - (u32)pnetwork->last_scanned) / HZ;
        if (delta_time < SCANQUEUE_LIFETIME)
                return;
        spin_lock_irqsave(&free_queue->lock, irqL);
        list_del_init(&pnetwork->list);
        list_add_tail(&pnetwork->list, &free_queue->queue);
        pmlmepriv->num_of_scanned--;
        spin_unlock_irqrestore(&free_queue->lock, irqL);
}

static void free_network_nolock(struct mlme_priv *pmlmepriv,
                          struct wlan_network *pnetwork)
{
        struct  __queue *free_queue = &pmlmepriv->free_bss_pool;

        if (pnetwork == NULL)
                return;
        if (pnetwork->fixed)
                return;
        list_del_init(&pnetwork->list);
        list_add_tail(&pnetwork->list, &free_queue->queue);
        pmlmepriv->num_of_scanned--;
}


/* return the wlan_network with the matching addr
 * Shall be called under atomic context...
 * to avoid possible racing condition...
 */
static struct wlan_network *_r8712_find_network(struct  __queue *scanned_queue,
                                         u8 *addr)
{
        unsigned long irqL;
        struct list_head *phead, *plist;
        struct wlan_network *pnetwork = NULL;

        if (is_zero_ether_addr(addr))
                return NULL;
        spin_lock_irqsave(&scanned_queue->lock, irqL);
        phead = &scanned_queue->queue;
        plist = phead->next;
        while (plist != phead) {
                pnetwork = container_of(plist, struct wlan_network, list);
                plist = plist->next;
                if (!memcmp(addr, pnetwork->network.MacAddress, ETH_ALEN))
                        break;
        }
        spin_unlock_irqrestore(&scanned_queue->lock, irqL);
        return pnetwork;
}

static void _free_network_queue(struct _adapter *padapter)
{
        unsigned long irqL;
        struct list_head *phead, *plist;
        struct wlan_network *pnetwork;
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
        struct  __queue *scanned_queue = &pmlmepriv->scanned_queue;

        spin_lock_irqsave(&scanned_queue->lock, irqL);
        phead = &scanned_queue->queue;
        plist = phead->next;
        while (!end_of_queue_search(phead, plist)) {
                pnetwork = container_of(plist, struct wlan_network, list);
                plist = plist->next;
                _free_network(pmlmepriv, pnetwork);
        }
        spin_unlock_irqrestore(&scanned_queue->lock, irqL);
}

sint r8712_if_up(struct _adapter *padapter)
{
        sint res;

        if (padapter->bDriverStopped || padapter->bSurpriseRemoved ||
            !check_fwstate(&padapter->mlmepriv, _FW_LINKED)) {
                res = false;
        } else {
                res = true;
        }
        return res;
}

void r8712_generate_random_ibss(u8 *pibss)
{
        u32 curtime = jiffies;

        pibss[0] = 0x02; /*in ad-hoc mode bit1 must set to 1 */
        pibss[1] = 0x11;
        pibss[2] = 0x87;
        pibss[3] = (u8)(curtime & 0xff);
        pibss[4] = (u8)((curtime >> 8) & 0xff);
        pibss[5] = (u8)((curtime >> 16) & 0xff);
}

uint r8712_get_wlan_bssid_ex_sz(struct wlan_bssid_ex *bss)
{
        return sizeof(*bss) + bss->IELength - MAX_IE_SZ;
}

u8 *r8712_get_capability_from_ie(u8 *ie)
{
        return ie + 8 + 2;
}

int r8712_init_mlme_priv(struct _adapter *padapter)
{
        return _init_mlme_priv(padapter);
}

void r8712_free_mlme_priv(struct mlme_priv *pmlmepriv)
{
        kfree(pmlmepriv->free_bss_buf);
}

static struct   wlan_network *alloc_network(struct mlme_priv *pmlmepriv)
{
        return _r8712_alloc_network(pmlmepriv);
}

void r8712_free_network_queue(struct _adapter *dev)
{
        _free_network_queue(dev);
}

/*
 * return the wlan_network with the matching addr
 * Shall be called under atomic context...
 * to avoid possible racing condition...
 */
static struct wlan_network *r8712_find_network(struct  __queue *scanned_queue,
                                               u8 *addr)
{
        struct wlan_network *pnetwork = _r8712_find_network(scanned_queue,
                                                            addr);

        return pnetwork;
}

int r8712_is_same_ibss(struct _adapter *adapter, struct wlan_network *pnetwork)
{
        int ret = true;
        struct security_priv *psecuritypriv = &adapter->securitypriv;

        if ((psecuritypriv->PrivacyAlgrthm != _NO_PRIVACY_) &&
                    (pnetwork->network.Privacy == cpu_to_le32(0)))
                ret = false;
        else if ((psecuritypriv->PrivacyAlgrthm == _NO_PRIVACY_) &&
                 (pnetwork->network.Privacy == cpu_to_le32(1)))
                ret = false;
        else
                ret = true;
        return ret;

}

static int is_same_network(struct wlan_bssid_ex *src,
                           struct wlan_bssid_ex *dst)
{
         u16 s_cap, d_cap;

        memcpy((u8 *)&s_cap, r8712_get_capability_from_ie(src->IEs), 2);
        memcpy((u8 *)&d_cap, r8712_get_capability_from_ie(dst->IEs), 2);
        return (src->Ssid.SsidLength == dst->Ssid.SsidLength) &&
                        (src->Configuration.DSConfig ==
                        dst->Configuration.DSConfig) &&
                        ((!memcmp(src->MacAddress, dst->MacAddress,
                        ETH_ALEN))) &&
                        ((!memcmp(src->Ssid.Ssid,
                          dst->Ssid.Ssid,
                          src->Ssid.SsidLength))) &&
                        ((s_cap & WLAN_CAPABILITY_IBSS) ==
                        (d_cap & WLAN_CAPABILITY_IBSS)) &&
                        ((s_cap & WLAN_CAPABILITY_BSS) ==
                        (d_cap & WLAN_CAPABILITY_BSS));

}

struct  wlan_network *r8712_get_oldest_wlan_network(
                                struct  __queue *scanned_queue)
{
        struct list_head *plist, *phead;
        struct  wlan_network    *pwlan = NULL;
        struct  wlan_network    *oldest = NULL;

        phead = &scanned_queue->queue;
        plist = phead->next;
        while (1) {
                if (end_of_queue_search(phead, plist) ==  true)
                        break;
                pwlan = container_of(plist, struct wlan_network, list);
                if (pwlan->fixed != true) {
                        if (oldest == NULL ||
                            time_after((unsigned long)oldest->last_scanned,
                            (unsigned long)pwlan->last_scanned))
                                oldest = pwlan;
                }
                plist = plist->next;
        }
        return oldest;
}

static void update_network(struct wlan_bssid_ex *dst,
                           struct wlan_bssid_ex *src,
                           struct _adapter *padapter)
{
        u32 last_evm = 0, tmpVal;
        struct smooth_rssi_data *sqd = &padapter->recvpriv.signal_qual_data;

        if (check_fwstate(&padapter->mlmepriv, _FW_LINKED) &&
            is_same_network(&(padapter->mlmepriv.cur_network.network), src)) {
                if (padapter->recvpriv.signal_qual_data.total_num++ >=
                    PHY_LINKQUALITY_SLID_WIN_MAX) {
                        padapter->recvpriv.signal_qual_data.total_num =
                                   PHY_LINKQUALITY_SLID_WIN_MAX;
                        last_evm = sqd->elements[sqd->index];
                        padapter->recvpriv.signal_qual_data.total_val -=
                                 last_evm;
                }
                padapter->recvpriv.signal_qual_data.total_val += src->Rssi;

                sqd->elements[sqd->index++] = src->Rssi;
                if (padapter->recvpriv.signal_qual_data.index >=
                    PHY_LINKQUALITY_SLID_WIN_MAX)
                        padapter->recvpriv.signal_qual_data.index = 0;
                /* <1> Showed on UI for user, in percentage. */
                tmpVal = padapter->recvpriv.signal_qual_data.total_val /
                         padapter->recvpriv.signal_qual_data.total_num;
                padapter->recvpriv.signal = (u8)tmpVal;

                src->Rssi = padapter->recvpriv.signal;
        } else {
                src->Rssi = (src->Rssi + dst->Rssi) / 2;
        }
        memcpy((u8 *)dst, (u8 *)src, r8712_get_wlan_bssid_ex_sz(src));
}

static void update_current_network(struct _adapter *adapter,
                                   struct wlan_bssid_ex *pnetwork)
{
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;

        if (is_same_network(&(pmlmepriv->cur_network.network), pnetwork)) {
                update_network(&(pmlmepriv->cur_network.network),
                               pnetwork, adapter);
                r8712_update_protection(adapter,
                               (pmlmepriv->cur_network.network.IEs) +
                               sizeof(struct NDIS_802_11_FIXED_IEs),
                               pmlmepriv->cur_network.network.IELength);
        }
}

/* Caller must hold pmlmepriv->lock first */
static void update_scanned_network(struct _adapter *adapter,
                            struct wlan_bssid_ex *target)
{
        struct list_head *plist, *phead;

        u32 bssid_ex_sz;
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
        struct  __queue *queue = &pmlmepriv->scanned_queue;
        struct wlan_network *pnetwork = NULL;
        struct wlan_network *oldest = NULL;

        phead = &queue->queue;
        plist = phead->next;

        while (1) {
                if (end_of_queue_search(phead, plist))
                        break;

                pnetwork = container_of(plist, struct wlan_network, list);
                if (is_same_network(&pnetwork->network, target))
                        break;
                if ((oldest == ((struct wlan_network *)0)) ||
                    time_after((unsigned long)oldest->last_scanned,
                                (unsigned long)pnetwork->last_scanned))
                        oldest = pnetwork;

                plist = plist->next;
        }


        /* If we didn't find a match, then get a new network slot to initialize
         * with this beacon's information
         */
        if (end_of_queue_search(phead, plist)) {
                if (list_empty(&pmlmepriv->free_bss_pool.queue)) {
                        /* If there are no more slots, expire the oldest */
                        pnetwork = oldest;
                        target->Rssi = (pnetwork->network.Rssi +
                                        target->Rssi) / 2;
                        memcpy(&pnetwork->network, target,
                                r8712_get_wlan_bssid_ex_sz(target));
                        pnetwork->last_scanned = jiffies;
                } else {
                        /* Otherwise just pull from the free list */
                        /* update scan_time */
                        pnetwork = alloc_network(pmlmepriv);
                        if (pnetwork == NULL)
                                return;
                        bssid_ex_sz = r8712_get_wlan_bssid_ex_sz(target);
                        target->Length = bssid_ex_sz;
                        memcpy(&pnetwork->network, target, bssid_ex_sz);
                        list_add_tail(&pnetwork->list, &queue->queue);
                }
        } else {
                /* we have an entry and we are going to update it. But
                 * this entry may be already expired. In this case we
                 * do the same as we found a new net and call the new_net
                 * handler
                 */
                update_network(&pnetwork->network, target, adapter);
                pnetwork->last_scanned = jiffies;
        }
}

static void rtl8711_add_network(struct _adapter *adapter,
                         struct wlan_bssid_ex *pnetwork)
{
        unsigned long irqL;
        struct mlme_priv *pmlmepriv = &(((struct _adapter *)adapter)->mlmepriv);
        struct  __queue *queue = &pmlmepriv->scanned_queue;

        spin_lock_irqsave(&queue->lock, irqL);
        update_current_network(adapter, pnetwork);
        update_scanned_network(adapter, pnetwork);
        spin_unlock_irqrestore(&queue->lock, irqL);
}

/*select the desired network based on the capability of the (i)bss.
 * check items:         (1) security
 *                      (2) network_type
 *                      (3) WMM
 *                      (4) HT
 *                      (5) others
 */
static int is_desired_network(struct _adapter *adapter,
                                struct wlan_network *pnetwork)
{
        u8 wps_ie[512];
        uint wps_ielen;
        int bselected = true;
        struct  security_priv *psecuritypriv = &adapter->securitypriv;

        if (psecuritypriv->wps_phase) {
                if (r8712_get_wps_ie(pnetwork->network.IEs,
                    pnetwork->network.IELength, wps_ie,
                    &wps_ielen))
                        return true;
                return false;
        }
        if ((psecuritypriv->PrivacyAlgrthm != _NO_PRIVACY_) &&
                    (pnetwork->network.Privacy == 0))
                bselected = false;
        if (check_fwstate(&adapter->mlmepriv, WIFI_ADHOC_STATE)) {
                if (pnetwork->network.InfrastructureMode !=
                        adapter->mlmepriv.cur_network.network.
                        InfrastructureMode)
                        bselected = false;
        }
        return bselected;
}

/* TODO: Perry : For Power Management */
void r8712_atimdone_event_callback(struct _adapter *adapter, u8 *pbuf)
{
}

void r8712_survey_event_callback(struct _adapter *adapter, u8 *pbuf)
{
        unsigned long flags;
        u32 len;
        struct wlan_bssid_ex *pnetwork;
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;

        pnetwork = (struct wlan_bssid_ex *)pbuf;
#ifdef __BIG_ENDIAN
        /* endian_convert */
        pnetwork->Length = le32_to_cpu(pnetwork->Length);
        pnetwork->Ssid.SsidLength = le32_to_cpu(pnetwork->Ssid.SsidLength);
        pnetwork->Privacy = le32_to_cpu(pnetwork->Privacy);
        pnetwork->Rssi = le32_to_cpu(pnetwork->Rssi);
        pnetwork->NetworkTypeInUse = le32_to_cpu(pnetwork->NetworkTypeInUse);
        pnetwork->Configuration.ATIMWindow =
                 le32_to_cpu(pnetwork->Configuration.ATIMWindow);
        pnetwork->Configuration.BeaconPeriod =
                 le32_to_cpu(pnetwork->Configuration.BeaconPeriod);
        pnetwork->Configuration.DSConfig =
                 le32_to_cpu(pnetwork->Configuration.DSConfig);
        pnetwork->Configuration.FHConfig.DwellTime =
                 le32_to_cpu(pnetwork->Configuration.FHConfig.DwellTime);
        pnetwork->Configuration.FHConfig.HopPattern =
                 le32_to_cpu(pnetwork->Configuration.FHConfig.HopPattern);
        pnetwork->Configuration.FHConfig.HopSet =
                 le32_to_cpu(pnetwork->Configuration.FHConfig.HopSet);
        pnetwork->Configuration.FHConfig.Length =
                 le32_to_cpu(pnetwork->Configuration.FHConfig.Length);
        pnetwork->Configuration.Length =
                 le32_to_cpu(pnetwork->Configuration.Length);
        pnetwork->InfrastructureMode =
                 le32_to_cpu(pnetwork->InfrastructureMode);
        pnetwork->IELength = le32_to_cpu(pnetwork->IELength);
#endif
        len = r8712_get_wlan_bssid_ex_sz(pnetwork);
        if (len > sizeof(struct wlan_bssid_ex))
                return;
        spin_lock_irqsave(&pmlmepriv->lock2, flags);
        /* update IBSS_network 's timestamp */
        if (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
                if (!memcmp(&(pmlmepriv->cur_network.network.MacAddress),
                    pnetwork->MacAddress, ETH_ALEN)) {
                        struct wlan_network *ibss_wlan = NULL;

                        memcpy(pmlmepriv->cur_network.network.IEs,
                                pnetwork->IEs, 8);
                        ibss_wlan = r8712_find_network(
                                                &pmlmepriv->scanned_queue,
                                                pnetwork->MacAddress);
                        if (ibss_wlan) {
                                memcpy(ibss_wlan->network.IEs,
                                        pnetwork->IEs, 8);
                                goto exit;
                        }
                }
        }
        /* lock pmlmepriv->lock when you accessing network_q */
        if (!check_fwstate(pmlmepriv, _FW_UNDER_LINKING)) {
                if (pnetwork->Ssid.Ssid[0] != 0) {
                        rtl8711_add_network(adapter, pnetwork);
                } else {
                        pnetwork->Ssid.SsidLength = 8;
                        memcpy(pnetwork->Ssid.Ssid, "<hidden>", 8);
                        rtl8711_add_network(adapter, pnetwork);
                }
        }
exit:
        spin_unlock_irqrestore(&pmlmepriv->lock2, flags);
}

void r8712_surveydone_event_callback(struct _adapter *adapter, u8 *pbuf)
{
        unsigned long irqL;
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;

        spin_lock_irqsave(&pmlmepriv->lock, irqL);

        if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY)) {
                del_timer(&pmlmepriv->scan_to_timer);

                _clr_fwstate_(pmlmepriv, _FW_UNDER_SURVEY);
        }

        if (pmlmepriv->to_join) {
                if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE)) {
                        if (!check_fwstate(pmlmepriv, _FW_LINKED)) {
                                set_fwstate(pmlmepriv, _FW_UNDER_LINKING);

                                if (r8712_select_and_join_from_scan(pmlmepriv)
                                    == _SUCCESS) {
                                        mod_timer(&pmlmepriv->assoc_timer, jiffies +
                                                  msecs_to_jiffies(MAX_JOIN_TIMEOUT));
                                } else {
                                        struct wlan_bssid_ex *pdev_network =
                                          &(adapter->registrypriv.dev_network);
                                        u8 *pibss =
                                                 adapter->registrypriv.
                                                        dev_network.MacAddress;
                                        pmlmepriv->fw_state ^= _FW_UNDER_SURVEY;
                                        memcpy(&pdev_network->Ssid,
                                                &pmlmepriv->assoc_ssid,
                                                sizeof(struct
                                                         ndis_802_11_ssid));
                                        r8712_update_registrypriv_dev_network
                                                (adapter);
                                        r8712_generate_random_ibss(pibss);
                                        pmlmepriv->fw_state =
                                                 WIFI_ADHOC_MASTER_STATE;
                                        pmlmepriv->to_join = false;
                                }
                        }
                } else {
                        pmlmepriv->to_join = false;
                        set_fwstate(pmlmepriv, _FW_UNDER_LINKING);
                        if (r8712_select_and_join_from_scan(pmlmepriv) ==
                            _SUCCESS)
                                mod_timer(&pmlmepriv->assoc_timer, jiffies +
                                          msecs_to_jiffies(MAX_JOIN_TIMEOUT));
                        else
                                _clr_fwstate_(pmlmepriv, _FW_UNDER_LINKING);
                }
        }
        spin_unlock_irqrestore(&pmlmepriv->lock, irqL);
}

/*
 *r8712_free_assoc_resources: the caller has to lock pmlmepriv->lock
 */
void r8712_free_assoc_resources(struct _adapter *adapter)
{
        unsigned long irqL;
        struct wlan_network *pwlan = NULL;
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
        struct sta_priv *pstapriv = &adapter->stapriv;
        struct wlan_network *tgt_network = &pmlmepriv->cur_network;

        pwlan = r8712_find_network(&pmlmepriv->scanned_queue,
                                   tgt_network->network.MacAddress);

        if (check_fwstate(pmlmepriv, WIFI_STATION_STATE | WIFI_AP_STATE)) {
                struct sta_info *psta;

                psta = r8712_get_stainfo(&adapter->stapriv,
                                         tgt_network->network.MacAddress);

                spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
                r8712_free_stainfo(adapter,  psta);
                spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
        }

        if (check_fwstate(pmlmepriv,
            WIFI_ADHOC_STATE | WIFI_ADHOC_MASTER_STATE | WIFI_AP_STATE))
                r8712_free_all_stainfo(adapter);
        if (pwlan)
                pwlan->fixed = false;

        if (((check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) &&
             (adapter->stapriv.asoc_sta_count == 1)))
                free_network_nolock(pmlmepriv, pwlan);
}

/*
 * r8712_indicate_connect: the caller has to lock pmlmepriv->lock
 */
void r8712_indicate_connect(struct _adapter *padapter)
{
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;

        pmlmepriv->to_join = false;
        set_fwstate(pmlmepriv, _FW_LINKED);
        padapter->ledpriv.LedControlHandler(padapter, LED_CTL_LINK);
        r8712_os_indicate_connect(padapter);
        if (padapter->registrypriv.power_mgnt > PS_MODE_ACTIVE)
                mod_timer(&pmlmepriv->dhcp_timer,
                          jiffies + msecs_to_jiffies(60000));
}


/*
 * r8712_ind_disconnect: the caller has to lock pmlmepriv->lock
 */
void r8712_ind_disconnect(struct _adapter *padapter)
{
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;

        if (check_fwstate(pmlmepriv, _FW_LINKED)) {
                _clr_fwstate_(pmlmepriv, _FW_LINKED);
                padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
                r8712_os_indicate_disconnect(padapter);
        }
        if (padapter->pwrctrlpriv.pwr_mode !=
            padapter->registrypriv.power_mgnt) {
                del_timer(&pmlmepriv->dhcp_timer);
                r8712_set_ps_mode(padapter, padapter->registrypriv.power_mgnt,
                                  padapter->registrypriv.smart_ps);
        }
}

/*Notes:
 *pnetwork : returns from r8712_joinbss_event_callback
 *ptarget_wlan: found from scanned_queue
 *if join_res > 0, for (fw_state==WIFI_STATION_STATE), we check if
 *  "ptarget_sta" & "ptarget_wlan" exist.
 *if join_res > 0, for (fw_state==WIFI_ADHOC_STATE), we only check
 * if "ptarget_wlan" exist.
 *if join_res > 0, update "cur_network->network" from
 * "pnetwork->network" if (ptarget_wlan !=NULL).
 */
void r8712_joinbss_event_callback(struct _adapter *adapter, u8 *pbuf)
{
        unsigned long irqL = 0, irqL2;
        struct sta_info *ptarget_sta = NULL, *pcur_sta = NULL;
        struct sta_priv *pstapriv = &adapter->stapriv;
        struct mlme_priv        *pmlmepriv = &adapter->mlmepriv;
        struct wlan_network     *cur_network = &pmlmepriv->cur_network;
        struct wlan_network     *pcur_wlan = NULL, *ptarget_wlan = NULL;
        unsigned int            the_same_macaddr = false;
        struct wlan_network *pnetwork;

        if (sizeof(struct list_head) == 4 * sizeof(u32)) {
                pnetwork = kmalloc(sizeof(struct wlan_network), GFP_ATOMIC);
                if (!pnetwork)
                        return;
                memcpy((u8 *)pnetwork + 16, (u8 *)pbuf + 8,
                       sizeof(struct wlan_network) - 16);
        } else {
                pnetwork = (struct wlan_network *)pbuf;
        }

#ifdef __BIG_ENDIAN
        /* endian_convert */
        pnetwork->join_res = le32_to_cpu(pnetwork->join_res);
        pnetwork->network_type = le32_to_cpu(pnetwork->network_type);
        pnetwork->network.Length = le32_to_cpu(pnetwork->network.Length);
        pnetwork->network.Ssid.SsidLength =
                 le32_to_cpu(pnetwork->network.Ssid.SsidLength);
        pnetwork->network.Privacy = le32_to_cpu(pnetwork->network.Privacy);
        pnetwork->network.Rssi = le32_to_cpu(pnetwork->network.Rssi);
        pnetwork->network.NetworkTypeInUse =
                 le32_to_cpu(pnetwork->network.NetworkTypeInUse);
        pnetwork->network.Configuration.ATIMWindow =
                 le32_to_cpu(pnetwork->network.Configuration.ATIMWindow);
        pnetwork->network.Configuration.BeaconPeriod =
                 le32_to_cpu(pnetwork->network.Configuration.BeaconPeriod);
        pnetwork->network.Configuration.DSConfig =
                 le32_to_cpu(pnetwork->network.Configuration.DSConfig);
        pnetwork->network.Configuration.FHConfig.DwellTime =
                 le32_to_cpu(pnetwork->network.Configuration.FHConfig.
                             DwellTime);
        pnetwork->network.Configuration.FHConfig.HopPattern =
                 le32_to_cpu(pnetwork->network.Configuration.
                             FHConfig.HopPattern);
        pnetwork->network.Configuration.FHConfig.HopSet =
                 le32_to_cpu(pnetwork->network.Configuration.FHConfig.HopSet);
        pnetwork->network.Configuration.FHConfig.Length =
                 le32_to_cpu(pnetwork->network.Configuration.FHConfig.Length);
        pnetwork->network.Configuration.Length =
                 le32_to_cpu(pnetwork->network.Configuration.Length);
        pnetwork->network.InfrastructureMode =
                 le32_to_cpu(pnetwork->network.InfrastructureMode);
        pnetwork->network.IELength = le32_to_cpu(pnetwork->network.IELength);
#endif

        the_same_macaddr = !memcmp(pnetwork->network.MacAddress,
                                   cur_network->network.MacAddress, ETH_ALEN);
        pnetwork->network.Length =
                 r8712_get_wlan_bssid_ex_sz(&pnetwork->network);
        spin_lock_irqsave(&pmlmepriv->lock, irqL);
        if (pnetwork->network.Length > sizeof(struct wlan_bssid_ex))
                goto ignore_joinbss_callback;
        if (pnetwork->join_res > 0) {
                if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING)) {
                        /*s1. find ptarget_wlan*/
                        if (check_fwstate(pmlmepriv, _FW_LINKED)) {
                                if (the_same_macaddr) {
                                        ptarget_wlan =
                                            r8712_find_network(&pmlmepriv->
                                            scanned_queue,
                                            cur_network->network.MacAddress);
                                } else {
                                        pcur_wlan =
                                             r8712_find_network(&pmlmepriv->
                                             scanned_queue,
                                             cur_network->network.MacAddress);
                                        pcur_wlan->fixed = false;

                                        pcur_sta = r8712_get_stainfo(pstapriv,
                                             cur_network->network.MacAddress);
                                        spin_lock_irqsave(&pstapriv->
                                                sta_hash_lock, irqL2);
                                        r8712_free_stainfo(adapter, pcur_sta);
                                        spin_unlock_irqrestore(&(pstapriv->
                                                sta_hash_lock), irqL2);

                                        ptarget_wlan =
                                                 r8712_find_network(&pmlmepriv->
                                                 scanned_queue,
                                                 pnetwork->network.
                                                 MacAddress);
                                        if (ptarget_wlan)
                                                ptarget_wlan->fixed = true;
                                }
                        } else {
                                ptarget_wlan = r8712_find_network(&pmlmepriv->
                                                scanned_queue,
                                                pnetwork->network.MacAddress);
                                if (ptarget_wlan)
                                        ptarget_wlan->fixed = true;
                        }

                        if (ptarget_wlan == NULL) {
                                if (check_fwstate(pmlmepriv,
                                        _FW_UNDER_LINKING))
                                        pmlmepriv->fw_state ^=
                                                 _FW_UNDER_LINKING;
                                goto ignore_joinbss_callback;
                        }

                        /*s2. find ptarget_sta & update ptarget_sta*/
                        if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
                                if (the_same_macaddr) {
                                        ptarget_sta =
                                                 r8712_get_stainfo(pstapriv,
                                                 pnetwork->network.MacAddress);
                                        if (ptarget_sta == NULL)
                                                ptarget_sta =
                                                 r8712_alloc_stainfo(pstapriv,
                                                 pnetwork->network.MacAddress);
                                } else {
                                        ptarget_sta =
                                                 r8712_alloc_stainfo(pstapriv,
                                                 pnetwork->network.MacAddress);
                                }
                                if (ptarget_sta) /*update ptarget_sta*/ {
                                        ptarget_sta->aid = pnetwork->join_res;
                                        ptarget_sta->qos_option = 1;
                                        ptarget_sta->mac_id = 5;
                                        if (adapter->securitypriv.
                                            AuthAlgrthm == 2) {
                                                adapter->securitypriv.
                                                        binstallGrpkey =
                                                         false;
                                                adapter->securitypriv.
                                                        busetkipkey =
                                                         false;
                                                adapter->securitypriv.
                                                        bgrpkey_handshake =
                                                         false;
                                                ptarget_sta->ieee8021x_blocked
                                                         = true;
                                                ptarget_sta->XPrivacy =
                                                         adapter->securitypriv.
                                                         PrivacyAlgrthm;
                                                memset((u8 *)&ptarget_sta->
                                                         x_UncstKey,
                                                         0,
                                                         sizeof(union Keytype));
                                                memset((u8 *)&ptarget_sta->
                                                         tkiprxmickey,
                                                         0,
                                                         sizeof(union Keytype));
                                                memset((u8 *)&ptarget_sta->
                                                         tkiptxmickey,
                                                         0,
                                                         sizeof(union Keytype));
                                                memset((u8 *)&ptarget_sta->
                                                         txpn, 0,
                                                         sizeof(union pn48));
                                                memset((u8 *)&ptarget_sta->
                                                         rxpn, 0,
                                                         sizeof(union pn48));
                                        }
                                } else {
                                        if (check_fwstate(pmlmepriv,
                                            _FW_UNDER_LINKING))
                                                pmlmepriv->fw_state ^=
                                                         _FW_UNDER_LINKING;
                                        goto ignore_joinbss_callback;
                                }
                        }

                        /*s3. update cur_network & indicate connect*/
                        memcpy(&cur_network->network, &pnetwork->network,
                                pnetwork->network.Length);
                        cur_network->aid = pnetwork->join_res;
                        /*update fw_state will clr _FW_UNDER_LINKING*/
                        switch (pnetwork->network.InfrastructureMode) {
                        case Ndis802_11Infrastructure:
                                pmlmepriv->fw_state = WIFI_STATION_STATE;
                                break;
                        case Ndis802_11IBSS:
                                pmlmepriv->fw_state = WIFI_ADHOC_STATE;
                                break;
                        default:
                                pmlmepriv->fw_state = WIFI_NULL_STATE;
                                break;
                        }
                        r8712_update_protection(adapter,
                                          (cur_network->network.IEs) +
                                          sizeof(struct NDIS_802_11_FIXED_IEs),
                                          (cur_network->network.IELength));
                        /*TODO: update HT_Capability*/
                        update_ht_cap(adapter, cur_network->network.IEs,
                                      cur_network->network.IELength);
                        /*indicate connect*/
                        if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
                                r8712_indicate_connect(adapter);
                        del_timer(&pmlmepriv->assoc_timer);
                } else {
                        goto ignore_joinbss_callback;
                }
        } else {
                if (check_fwstate(pmlmepriv, _FW_UNDER_LINKING)) {
                        mod_timer(&pmlmepriv->assoc_timer,
                                  jiffies + msecs_to_jiffies(1));
                        _clr_fwstate_(pmlmepriv, _FW_UNDER_LINKING);
                }
        }
ignore_joinbss_callback:
        spin_unlock_irqrestore(&pmlmepriv->lock, irqL);
        if (sizeof(struct list_head) == 4 * sizeof(u32))
                kfree(pnetwork);
}

void r8712_stassoc_event_callback(struct _adapter *adapter, u8 *pbuf)
{
        unsigned long irqL;
        struct sta_info *psta;
        struct mlme_priv *pmlmepriv = &(adapter->mlmepriv);
        struct stassoc_event *pstassoc  = (struct stassoc_event *)pbuf;

        /* to do: */
        if (!r8712_access_ctrl(&adapter->acl_list, pstassoc->macaddr))
                return;
        psta = r8712_get_stainfo(&adapter->stapriv, pstassoc->macaddr);
        if (psta != NULL) {
                /*the sta have been in sta_info_queue => do nothing
                 *(between drv has received this event before and
                 * fw have not yet to set key to CAM_ENTRY)
                 */
                return;
        }

        psta = r8712_alloc_stainfo(&adapter->stapriv, pstassoc->macaddr);
        if (psta == NULL)
                return;
        /* to do : init sta_info variable */
        psta->qos_option = 0;
        psta->mac_id = le32_to_cpu(pstassoc->cam_id);
        /* psta->aid = (uint)pstassoc->cam_id; */

        if (adapter->securitypriv.AuthAlgrthm == 2)
                psta->XPrivacy = adapter->securitypriv.PrivacyAlgrthm;
        psta->ieee8021x_blocked = false;
        spin_lock_irqsave(&pmlmepriv->lock, irqL);
        if (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) ||
            check_fwstate(pmlmepriv, WIFI_ADHOC_STATE)) {
                if (adapter->stapriv.asoc_sta_count == 2) {
                        /* a sta + bc/mc_stainfo (not Ibss_stainfo) */
                        r8712_indicate_connect(adapter);
                }
        }
        spin_unlock_irqrestore(&pmlmepriv->lock, irqL);
}

void r8712_stadel_event_callback(struct _adapter *adapter, u8 *pbuf)
{
        unsigned long irqL, irqL2;
        struct sta_info *psta;
        struct wlan_network *pwlan = NULL;
        struct wlan_bssid_ex *pdev_network = NULL;
        u8 *pibss = NULL;
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
        struct stadel_event *pstadel = (struct stadel_event *)pbuf;
        struct sta_priv *pstapriv = &adapter->stapriv;
        struct wlan_network *tgt_network = &pmlmepriv->cur_network;

        spin_lock_irqsave(&pmlmepriv->lock, irqL2);
        if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
                r8712_ind_disconnect(adapter);
                r8712_free_assoc_resources(adapter);
        }
        if (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE |
            WIFI_ADHOC_STATE)) {
                psta = r8712_get_stainfo(&adapter->stapriv, pstadel->macaddr);
                spin_lock_irqsave(&pstapriv->sta_hash_lock, irqL);
                r8712_free_stainfo(adapter, psta);
                spin_unlock_irqrestore(&pstapriv->sta_hash_lock, irqL);
                if (adapter->stapriv.asoc_sta_count == 1) {
                        /*a sta + bc/mc_stainfo (not Ibss_stainfo) */
                        pwlan = r8712_find_network(&pmlmepriv->scanned_queue,
                                tgt_network->network.MacAddress);
                        if (pwlan) {
                                pwlan->fixed = false;
                                free_network_nolock(pmlmepriv, pwlan);
                        }
                        /*re-create ibss*/
                        pdev_network = &(adapter->registrypriv.dev_network);
                        pibss = adapter->registrypriv.dev_network.MacAddress;
                        memcpy(pdev_network, &tgt_network->network,
                                r8712_get_wlan_bssid_ex_sz(&tgt_network->
                                                        network));
                        memcpy(&pdev_network->Ssid,
                                &pmlmepriv->assoc_ssid,
                                sizeof(struct ndis_802_11_ssid));
                        r8712_update_registrypriv_dev_network(adapter);
                        r8712_generate_random_ibss(pibss);
                        if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE)) {
                                _clr_fwstate_(pmlmepriv, WIFI_ADHOC_STATE);
                                set_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE);
                        }
                }
        }
        spin_unlock_irqrestore(&pmlmepriv->lock, irqL2);
}

void r8712_cpwm_event_callback(struct _adapter *adapter, u8 *pbuf)
{
        struct reportpwrstate_parm *preportpwrstate =
                         (struct reportpwrstate_parm *)pbuf;

        preportpwrstate->state |= (u8)(adapter->pwrctrlpriv.cpwm_tog + 0x80);
        r8712_cpwm_int_hdl(adapter, preportpwrstate);
}

/*      When the Netgear 3500 AP is with WPA2PSK-AES mode, it will send
 *       the ADDBA req frame with start seq control = 0 to wifi client after
 *       the WPA handshake and the seqence number of following data packet
 *      will be 0. In this case, the Rx reorder sequence is not longer than 0
 *       and the WiFi client will drop the data with seq number 0.
 *      So, the 8712 firmware has to inform driver with receiving the
 *       ADDBA-Req frame so that the driver can reset the
 *      sequence value of Rx reorder control.
 */
void r8712_got_addbareq_event_callback(struct _adapter *adapter, u8 *pbuf)
{
        struct  ADDBA_Req_Report_parm *pAddbareq_pram =
                         (struct ADDBA_Req_Report_parm *)pbuf;
        struct  sta_info *psta;
        struct  sta_priv *pstapriv = &adapter->stapriv;
        struct  recv_reorder_ctrl *precvreorder_ctrl = NULL;

        psta = r8712_get_stainfo(pstapriv, pAddbareq_pram->MacAddress);
        if (psta) {
                precvreorder_ctrl =
                         &psta->recvreorder_ctrl[pAddbareq_pram->tid];
                /* set the indicate_seq to 0xffff so that the rx reorder
                 * can store any following data packet.
                 */
                precvreorder_ctrl->indicate_seq = 0xffff;
        }
}

void r8712_wpspbc_event_callback(struct _adapter *adapter, u8 *pbuf)
{
        if (!adapter->securitypriv.wps_hw_pbc_pressed)
                adapter->securitypriv.wps_hw_pbc_pressed = true;
}

void _r8712_sitesurvey_ctrl_handler(struct _adapter *adapter)
{
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
        struct sitesurvey_ctrl  *psitesurveyctrl = &pmlmepriv->sitesurveyctrl;
        struct registry_priv    *pregistrypriv = &adapter->registrypriv;
        u64 current_tx_pkts;
        uint current_rx_pkts;

        current_tx_pkts = (adapter->xmitpriv.tx_pkts) -
                          (psitesurveyctrl->last_tx_pkts);
        current_rx_pkts = (adapter->recvpriv.rx_pkts) -
                          (psitesurveyctrl->last_rx_pkts);
        psitesurveyctrl->last_tx_pkts = adapter->xmitpriv.tx_pkts;
        psitesurveyctrl->last_rx_pkts = adapter->recvpriv.rx_pkts;
        if ((current_tx_pkts > pregistrypriv->busy_thresh) ||
            (current_rx_pkts > pregistrypriv->busy_thresh))
                psitesurveyctrl->traffic_busy = true;
        else
                psitesurveyctrl->traffic_busy = false;
}

void _r8712_join_timeout_handler(struct _adapter *adapter)
{
        unsigned long irqL;
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;

        if (adapter->bDriverStopped || adapter->bSurpriseRemoved)
                return;
        spin_lock_irqsave(&pmlmepriv->lock, irqL);
        _clr_fwstate_(pmlmepriv, _FW_UNDER_LINKING);
        pmlmepriv->to_join = false;
        if (check_fwstate(pmlmepriv, _FW_LINKED)) {
                r8712_os_indicate_disconnect(adapter);
                _clr_fwstate_(pmlmepriv, _FW_LINKED);
        }
        if (adapter->pwrctrlpriv.pwr_mode != adapter->registrypriv.power_mgnt) {
                r8712_set_ps_mode(adapter, adapter->registrypriv.power_mgnt,
                                  adapter->registrypriv.smart_ps);
        }
        spin_unlock_irqrestore(&pmlmepriv->lock, irqL);
}

void r8712_scan_timeout_handler (struct _adapter *adapter)
{
        unsigned long irqL;
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;

        spin_lock_irqsave(&pmlmepriv->lock, irqL);
        _clr_fwstate_(pmlmepriv, _FW_UNDER_SURVEY);
        pmlmepriv->to_join = false;     /* scan fail, so clear to_join flag */
        spin_unlock_irqrestore(&pmlmepriv->lock, irqL);
}

void _r8712_dhcp_timeout_handler (struct _adapter *adapter)
{
        if (adapter->bDriverStopped || adapter->bSurpriseRemoved)
                return;
        if (adapter->pwrctrlpriv.pwr_mode != adapter->registrypriv.power_mgnt)
                r8712_set_ps_mode(adapter, adapter->registrypriv.power_mgnt,
                            adapter->registrypriv.smart_ps);
}

void _r8712_wdg_timeout_handler(struct _adapter *adapter)
{
        r8712_wdg_wk_cmd(adapter);
}

int r8712_select_and_join_from_scan(struct mlme_priv *pmlmepriv)
{
        struct list_head *phead;
        unsigned char *dst_ssid, *src_ssid;
        struct _adapter *adapter;
        struct  __queue *queue = NULL;
        struct wlan_network *pnetwork = NULL;
        struct wlan_network *pnetwork_max_rssi = NULL;

        adapter = (struct _adapter *)pmlmepriv->nic_hdl;
        queue = &pmlmepriv->scanned_queue;
        phead = &queue->queue;
        pmlmepriv->pscanned = phead->next;
        while (1) {
                if (end_of_queue_search(phead, pmlmepriv->pscanned)) {
                        if ((pmlmepriv->assoc_by_rssi) &&
                            (pnetwork_max_rssi != NULL)) {
                                pnetwork = pnetwork_max_rssi;
                                goto ask_for_joinbss;
                        }
                        return _FAIL;
                }
                pnetwork = container_of(pmlmepriv->pscanned,
                                        struct wlan_network, list);
                if (pnetwork == NULL)
                        return _FAIL;
                pmlmepriv->pscanned = pmlmepriv->pscanned->next;
                if (pmlmepriv->assoc_by_bssid) {
                        dst_ssid = pnetwork->network.MacAddress;
                        src_ssid = pmlmepriv->assoc_bssid;
                        if (!memcmp(dst_ssid, src_ssid, ETH_ALEN)) {
                                if (check_fwstate(pmlmepriv, _FW_LINKED)) {
                                        if (is_same_network(&pmlmepriv->
                                            cur_network.network,
                                            &pnetwork->network)) {
                                                _clr_fwstate_(pmlmepriv,
                                                        _FW_UNDER_LINKING);
                                                /*r8712_indicate_connect again*/
                                                r8712_indicate_connect(adapter);
                                                return 2;
                                        }
                                        r8712_disassoc_cmd(adapter);
                                        r8712_ind_disconnect(adapter);
                                        r8712_free_assoc_resources(adapter);
                                }
                                goto ask_for_joinbss;
                        }
                } else if (pmlmepriv->assoc_ssid.SsidLength == 0) {
                        goto ask_for_joinbss;
                }
                dst_ssid = pnetwork->network.Ssid.Ssid;
                src_ssid = pmlmepriv->assoc_ssid.Ssid;
                if ((pnetwork->network.Ssid.SsidLength ==
                    pmlmepriv->assoc_ssid.SsidLength) &&
                    (!memcmp(dst_ssid, src_ssid,
                     pmlmepriv->assoc_ssid.SsidLength))) {
                        if (pmlmepriv->assoc_by_rssi) {
                                /* if the ssid is the same, select the bss
                                 * which has the max rssi
                                 */
                                if (pnetwork_max_rssi) {
                                        if (pnetwork->network.Rssi >
                                            pnetwork_max_rssi->network.Rssi)
                                                pnetwork_max_rssi = pnetwork;
                                } else {
                                        pnetwork_max_rssi = pnetwork;
                                }
                        } else if (is_desired_network(adapter, pnetwork)) {
                                if (check_fwstate(pmlmepriv, _FW_LINKED)) {
                                        r8712_disassoc_cmd(adapter);
                                        r8712_free_assoc_resources(adapter);
                                }
                                goto ask_for_joinbss;
                        }
                }
        }

ask_for_joinbss:
        return r8712_joinbss_cmd(adapter, pnetwork);
}

sint r8712_set_auth(struct _adapter *adapter,
                    struct security_priv *psecuritypriv)
{
        struct cmd_priv *pcmdpriv = &adapter->cmdpriv;
        struct cmd_obj *pcmd;
        struct setauth_parm *psetauthparm;

        pcmd = kmalloc(sizeof(*pcmd), GFP_ATOMIC);
        if (!pcmd)
                return _FAIL;

        psetauthparm = kzalloc(sizeof(*psetauthparm), GFP_ATOMIC);
        if (!psetauthparm) {
                kfree(pcmd);
                return _FAIL;
        }
        psetauthparm->mode = (u8)psecuritypriv->AuthAlgrthm;
        pcmd->cmdcode = _SetAuth_CMD_;
        pcmd->parmbuf = (unsigned char *)psetauthparm;
        pcmd->cmdsz = sizeof(struct setauth_parm);
        pcmd->rsp = NULL;
        pcmd->rspsz = 0;
        INIT_LIST_HEAD(&pcmd->list);
        r8712_enqueue_cmd(pcmdpriv, pcmd);
        return _SUCCESS;
}

sint r8712_set_key(struct _adapter *adapter,
                   struct security_priv *psecuritypriv,
             sint keyid)
{
        struct cmd_priv *pcmdpriv = &adapter->cmdpriv;
        struct cmd_obj *pcmd;
        struct setkey_parm *psetkeyparm;
        u8 keylen;
        sint ret = _SUCCESS;

        pcmd = kmalloc(sizeof(*pcmd), GFP_ATOMIC);
        if (!pcmd)
                return _FAIL;
        psetkeyparm = kzalloc(sizeof(*psetkeyparm), GFP_ATOMIC);
        if (!psetkeyparm) {
                ret = _FAIL;
                goto err_free_cmd;
        }
        if (psecuritypriv->AuthAlgrthm == 2) { /* 802.1X */
                psetkeyparm->algorithm =
                         (u8)psecuritypriv->XGrpPrivacy;
        } else { /* WEP */
                psetkeyparm->algorithm =
                         (u8)psecuritypriv->PrivacyAlgrthm;
        }
        psetkeyparm->keyid = (u8)keyid;

        switch (psetkeyparm->algorithm) {
        case _WEP40_:
                keylen = 5;
                memcpy(psetkeyparm->key,
                        psecuritypriv->DefKey[keyid].skey, keylen);
                break;
        case _WEP104_:
                keylen = 13;
                memcpy(psetkeyparm->key,
                        psecuritypriv->DefKey[keyid].skey, keylen);
                break;
        case _TKIP_:
                if (keyid < 1 || keyid > 2) {
                        ret = _FAIL;
                        goto err_free_parm;
                }
                keylen = 16;
                memcpy(psetkeyparm->key,
                        &psecuritypriv->XGrpKey[keyid - 1], keylen);
                psetkeyparm->grpkey = 1;
                break;
        case _AES_:
                if (keyid < 1 || keyid > 2) {
                        ret = _FAIL;
                        goto err_free_parm;
                }
                keylen = 16;
                memcpy(psetkeyparm->key,
                        &psecuritypriv->XGrpKey[keyid - 1], keylen);
                psetkeyparm->grpkey = 1;
                break;
        default:
                ret = _FAIL;
                goto err_free_parm;
        }
        pcmd->cmdcode = _SetKey_CMD_;
        pcmd->parmbuf = (u8 *)psetkeyparm;
        pcmd->cmdsz =  (sizeof(struct setkey_parm));
        pcmd->rsp = NULL;
        pcmd->rspsz = 0;
        INIT_LIST_HEAD(&pcmd->list);
        r8712_enqueue_cmd(pcmdpriv, pcmd);
        return ret;

err_free_parm:
        kfree(psetkeyparm);
err_free_cmd:
        kfree(pcmd);
        return ret;
}

/* adjust IEs for r8712_joinbss_cmd in WMM */
int r8712_restruct_wmm_ie(struct _adapter *adapter, u8 *in_ie, u8 *out_ie,
                    uint in_len, uint initial_out_len)
{
        unsigned int ielength = 0;
        unsigned int i, j;

        i = 12; /* after the fixed IE */
        while (i < in_len) {
                ielength = initial_out_len;
                if (in_ie[i] == 0xDD && in_ie[i + 2] == 0x00 &&
                    in_ie[i + 3] == 0x50 && in_ie[i + 4] == 0xF2 &&
                    in_ie[i + 5] == 0x02 && i + 5 < in_len) {
                        /*WMM element ID and OUI*/
                        for (j = i; j < i + 9; j++) {
                                out_ie[ielength] = in_ie[j];
                                ielength++;
                        }
                        out_ie[initial_out_len + 1] = 0x07;
                        out_ie[initial_out_len + 6] = 0x00;
                        out_ie[initial_out_len + 8] = 0x00;
                        break;
                }
                i += (in_ie[i + 1] + 2); /* to the next IE element */
        }
        return ielength;
}

/*
 * Ported from 8185: IsInPreAuthKeyList().
 *
 * Search by BSSID,
 * Return Value:
 *      -1              :if there is no pre-auth key in the  table
 *      >=0             :if there is pre-auth key, and   return the entry id
 */
static int SecIsInPMKIDList(struct _adapter *Adapter, u8 *bssid)
{
        struct security_priv *psecuritypriv = &Adapter->securitypriv;
        int i = 0;

        do {
                if (psecuritypriv->PMKIDList[i].bUsed &&
                   (!memcmp(psecuritypriv->PMKIDList[i].Bssid,
                            bssid, ETH_ALEN)))
                        break;
                i++;

        } while (i < NUM_PMKID_CACHE);

        if (i == NUM_PMKID_CACHE) {
                i = -1; /* Could not find. */
        } else {
                ; /* There is one Pre-Authentication Key for the
                   * specific BSSID.
                   */
        }
        return i;
}

sint r8712_restruct_sec_ie(struct _adapter *adapter, u8 *in_ie,
                     u8 *out_ie, uint in_len)
{
        u8 authmode = 0, match;
        u8 sec_ie[255], uncst_oui[4], bkup_ie[255];
        u8 wpa_oui[4] = {0x0, 0x50, 0xf2, 0x01};
        uint ielength, cnt, remove_cnt;
        int iEntry;
        struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
        struct security_priv *psecuritypriv = &adapter->securitypriv;
        uint ndisauthmode = psecuritypriv->ndisauthtype;
        uint ndissecuritytype = psecuritypriv->ndisencryptstatus;

        if ((ndisauthmode == Ndis802_11AuthModeWPA) ||
            (ndisauthmode == Ndis802_11AuthModeWPAPSK)) {
                authmode = _WPA_IE_ID_;
                uncst_oui[0] = 0x0;
                uncst_oui[1] = 0x50;
                uncst_oui[2] = 0xf2;
        }
        if ((ndisauthmode == Ndis802_11AuthModeWPA2) ||
            (ndisauthmode == Ndis802_11AuthModeWPA2PSK)) {
                authmode = _WPA2_IE_ID_;
                uncst_oui[0] = 0x0;
                uncst_oui[1] = 0x0f;
                uncst_oui[2] = 0xac;
        }
        switch (ndissecuritytype) {
        case Ndis802_11Encryption1Enabled:
        case Ndis802_11Encryption1KeyAbsent:
                uncst_oui[3] = 0x1;
                break;
        case Ndis802_11Encryption2Enabled:
        case Ndis802_11Encryption2KeyAbsent:
                uncst_oui[3] = 0x2;
                break;
        case Ndis802_11Encryption3Enabled:
        case Ndis802_11Encryption3KeyAbsent:
                uncst_oui[3] = 0x4;
                break;
        default:
                break;
        }
        /*Search required WPA or WPA2 IE and copy to sec_ie[] */
        cnt = 12;
        match = false;
        while (cnt < in_len) {
                if (in_ie[cnt] == authmode) {
                        if ((authmode == _WPA_IE_ID_) &&
                            (!memcmp(&in_ie[cnt + 2], &wpa_oui[0], 4))) {
                                memcpy(&sec_ie[0], &in_ie[cnt],
                                        in_ie[cnt + 1] + 2);
                                match = true;
                                break;
                        }
                        if (authmode == _WPA2_IE_ID_) {
                                memcpy(&sec_ie[0], &in_ie[cnt],
                                        in_ie[cnt + 1] + 2);
                                match = true;
                                break;
                        }
                        if (((authmode == _WPA_IE_ID_) &&
                             (!memcmp(&in_ie[cnt + 2], &wpa_oui[0], 4))) ||
                             (authmode == _WPA2_IE_ID_))
                                memcpy(&bkup_ie[0], &in_ie[cnt],
                                        in_ie[cnt + 1] + 2);
                }
                cnt += in_ie[cnt + 1] + 2; /*get next*/
        }
        /*restruct WPA IE or WPA2 IE in sec_ie[] */
        if (match) {
                if (sec_ie[0] == _WPA_IE_ID_) {
                        /* parsing SSN IE to select required encryption
                         * algorithm, and set the bc/mc encryption algorithm
                         */
                        while (true) {
                                /*check wpa_oui tag*/
                                if (memcmp(&sec_ie[2], &wpa_oui[0], 4)) {
                                        match = false;
                                        break;
                                }
                                if ((sec_ie[6] != 0x01) || (sec_ie[7] != 0x0)) {
                                        /*IE Ver error*/
                                        match = false;
                                        break;
                                }
                                if (!memcmp(&sec_ie[8], &wpa_oui[0], 3)) {
                                        /* get bc/mc encryption type (group
                                         * key type)
                                         */
                                        switch (sec_ie[11]) {
                                        case 0x0: /*none*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _NO_PRIVACY_;
                                                break;
                                        case 0x1: /*WEP_40*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _WEP40_;
                                                break;
                                        case 0x2: /*TKIP*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _TKIP_;
                                                break;
                                        case 0x3: /*AESCCMP*/
                                        case 0x4:
                                                psecuritypriv->XGrpPrivacy =
                                                                _AES_;
                                                break;
                                        case 0x5: /*WEP_104*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _WEP104_;
                                                break;
                                        }
                                } else {
                                        match = false;
                                        break;
                                }
                                if (sec_ie[12] == 0x01) {
                                        /*check the unicast encryption type*/
                                        if (memcmp(&sec_ie[14],
                                            &uncst_oui[0], 4)) {
                                                match = false;
                                                break;

                                        } /*else the uncst_oui is match*/
                                } else { /*mixed mode, unicast_enc_type > 1*/
                                        /*select the uncst_oui and remove
                                         * the other uncst_oui
                                         */
                                        cnt = sec_ie[12];
                                        remove_cnt = (cnt - 1) * 4;
                                        sec_ie[12] = 0x01;
                                        memcpy(&sec_ie[14], &uncst_oui[0], 4);
                                        /*remove the other unicast suit*/
                                        memcpy(&sec_ie[18],
                                                &sec_ie[18 + remove_cnt],
                                                sec_ie[1] - 18 + 2 -
                                                remove_cnt);
                                        sec_ie[1] = sec_ie[1] - remove_cnt;
                                }
                                break;
                        }
                }
                if (authmode == _WPA2_IE_ID_) {
                        /* parsing RSN IE to select required encryption
                         * algorithm, and set the bc/mc encryption algorithm
                         */
                        while (true) {
                                if ((sec_ie[2] != 0x01) || (sec_ie[3] != 0x0)) {
                                        /*IE Ver error*/
                                        match = false;
                                        break;
                                }
                                if (!memcmp(&sec_ie[4], &uncst_oui[0], 3)) {
                                        /*get bc/mc encryption type*/
                                        switch (sec_ie[7]) {
                                        case 0x1: /*WEP_40*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _WEP40_;
                                                break;
                                        case 0x2: /*TKIP*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _TKIP_;
                                                break;
                                        case 0x4: /*AESWRAP*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _AES_;
                                                break;
                                        case 0x5: /*WEP_104*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _WEP104_;
                                                break;
                                        default: /*one*/
                                                psecuritypriv->XGrpPrivacy =
                                                                _NO_PRIVACY_;
                                                break;
                                        }
                                } else {
                                        match = false;
                                        break;
                                }
                                if (sec_ie[8] == 0x01) {
                                        /*check the unicast encryption type*/
                                        if (memcmp(&sec_ie[10],
                                                     &uncst_oui[0], 4)) {
                                                match = false;
                                                break;
                                        } /*else the uncst_oui is match*/
                                } else { /*mixed mode, unicast_enc_type > 1*/
                                        /*select the uncst_oui and remove the
                                         * other uncst_oui
                                         */
                                        cnt = sec_ie[8];
                                        remove_cnt = (cnt - 1) * 4;
                                        sec_ie[8] = 0x01;
                                        memcpy(&sec_ie[10], &uncst_oui[0], 4);
                                        /*remove the other unicast suit*/
                                        memcpy(&sec_ie[14],
                                                &sec_ie[14 + remove_cnt],
                                                (sec_ie[1] - 14 + 2 -
                                                remove_cnt));
                                        sec_ie[1] = sec_ie[1] - remove_cnt;
                                }
                                break;
                        }
                }
        }
        if ((authmode == _WPA_IE_ID_) || (authmode == _WPA2_IE_ID_)) {
                /*copy fixed ie*/
                memcpy(out_ie, in_ie, 12);
                ielength = 12;
                /*copy RSN or SSN*/
                if (match) {
                        memcpy(&out_ie[ielength], &sec_ie[0], sec_ie[1] + 2);
                        ielength += sec_ie[1] + 2;
                        if (authmode == _WPA2_IE_ID_) {
                                /*the Pre-Authentication bit should be zero*/
                                out_ie[ielength - 1] = 0;
                                out_ie[ielength - 2] = 0;
                        }
                        r8712_report_sec_ie(adapter, authmode, sec_ie);
                }
        } else {
                /*copy fixed ie only*/
                memcpy(out_ie, in_ie, 12);
                ielength = 12;
                if (psecuritypriv->wps_phase) {
                        memcpy(out_ie + ielength, psecuritypriv->wps_ie,
                               psecuritypriv->wps_ie_len);
                        ielength += psecuritypriv->wps_ie_len;
                }
        }
        iEntry = SecIsInPMKIDList(adapter, pmlmepriv->assoc_bssid);
        if (iEntry < 0)
                return ielength;
        if (authmode == _WPA2_IE_ID_) {
                out_ie[ielength] = 1;
                ielength++;
                out_ie[ielength] = 0;   /*PMKID count = 0x0100*/
                ielength++;
                memcpy(&out_ie[ielength],
                        &psecuritypriv->PMKIDList[iEntry].PMKID, 16);
                ielength += 16;
                out_ie[13] += 18;/*PMKID length = 2+16*/
        }
        return ielength;
}

void r8712_init_registrypriv_dev_network(struct _adapter *adapter)
{
        struct registry_priv *pregistrypriv = &adapter->registrypriv;
        struct eeprom_priv *peepriv = &adapter->eeprompriv;
        struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
        u8 *myhwaddr = myid(peepriv);

        memcpy(pdev_network->MacAddress, myhwaddr, ETH_ALEN);
        memcpy(&pdev_network->Ssid, &pregistrypriv->ssid,
                sizeof(struct ndis_802_11_ssid));
        pdev_network->Configuration.Length =
                         sizeof(struct NDIS_802_11_CONFIGURATION);
        pdev_network->Configuration.BeaconPeriod = 100;
        pdev_network->Configuration.FHConfig.Length = 0;
        pdev_network->Configuration.FHConfig.HopPattern = 0;
        pdev_network->Configuration.FHConfig.HopSet = 0;
        pdev_network->Configuration.FHConfig.DwellTime = 0;
}

void r8712_update_registrypriv_dev_network(struct _adapter *adapter)
{
        int sz = 0;
        struct registry_priv    *pregistrypriv = &adapter->registrypriv;
        struct wlan_bssid_ex    *pdev_network = &pregistrypriv->dev_network;
        struct security_priv    *psecuritypriv = &adapter->securitypriv;
        struct wlan_network     *cur_network = &adapter->mlmepriv.cur_network;

        pdev_network->Privacy = cpu_to_le32(psecuritypriv->PrivacyAlgrthm
                                            > 0 ? 1 : 0); /* adhoc no 802.1x */
        pdev_network->Rssi = 0;
        switch (pregistrypriv->wireless_mode) {
        case WIRELESS_11B:
                pdev_network->NetworkTypeInUse = Ndis802_11DS;
                break;
        case WIRELESS_11G:
        case WIRELESS_11BG:
                pdev_network->NetworkTypeInUse = Ndis802_11OFDM24;
                break;
        case WIRELESS_11A:
                pdev_network->NetworkTypeInUse = Ndis802_11OFDM5;
                break;
        default:
                /* TODO */
                break;
        }
        pdev_network->Configuration.DSConfig = pregistrypriv->channel;
        if (cur_network->network.InfrastructureMode == Ndis802_11IBSS)
                pdev_network->Configuration.ATIMWindow = 3;
        pdev_network->InfrastructureMode = cur_network->network.InfrastructureMode;
        /* 1. Supported rates
         * 2. IE
         */
        sz = r8712_generate_ie(pregistrypriv);
        pdev_network->IELength = sz;
        pdev_network->Length = r8712_get_wlan_bssid_ex_sz(pdev_network);
}

/*the function is at passive_level*/
void r8712_joinbss_reset(struct _adapter *padapter)
{
        int i;
        struct mlme_priv        *pmlmepriv = &padapter->mlmepriv;
        struct ht_priv          *phtpriv = &pmlmepriv->htpriv;

        /* todo: if you want to do something io/reg/hw setting before join_bss,
         * please add code here
         */
        phtpriv->ampdu_enable = false;/*reset to disabled*/
        for (i = 0; i < 16; i++)
                phtpriv->baddbareq_issued[i] = false;/*reset it*/
        if (phtpriv->ht_option) {
                /* validate  usb rx aggregation */
                r8712_write8(padapter, 0x102500D9, 48);/*TH = 48 pages, 6k*/
        } else {
                /* invalidate  usb rx aggregation */
                /* TH=1 => means that invalidate usb rx aggregation */
                r8712_write8(padapter, 0x102500D9, 1);
        }
}

/*the function is >= passive_level*/
unsigned int r8712_restructure_ht_ie(struct _adapter *padapter, u8 *in_ie,
                                     u8 *out_ie, uint in_len, uint *pout_len)
{
        u32 ielen, out_len;
        unsigned char *p;
        struct ieee80211_ht_cap ht_capie;
        unsigned char WMM_IE[] = {0x00, 0x50, 0xf2, 0x02, 0x00, 0x01, 0x00};
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
        struct qos_priv *pqospriv = &pmlmepriv->qospriv;
        struct ht_priv *phtpriv = &pmlmepriv->htpriv;

        phtpriv->ht_option = 0;
        p = r8712_get_ie(in_ie + 12, _HT_CAPABILITY_IE_, &ielen, in_len - 12);
        if (p && (ielen > 0)) {
                if (pqospriv->qos_option == 0) {
                        out_len = *pout_len;
                        r8712_set_ie(out_ie + out_len, _VENDOR_SPECIFIC_IE_,
                                     _WMM_IE_Length_, WMM_IE, pout_len);
                        pqospriv->qos_option = 1;
                }
                out_len = *pout_len;
                memset(&ht_capie, 0, sizeof(struct ieee80211_ht_cap));
                ht_capie.cap_info = cpu_to_le16(IEEE80211_HT_CAP_SUP_WIDTH |
                                    IEEE80211_HT_CAP_SGI_20 |
                                    IEEE80211_HT_CAP_SGI_40 |
                                    IEEE80211_HT_CAP_TX_STBC |
                                    IEEE80211_HT_CAP_MAX_AMSDU |
                                    IEEE80211_HT_CAP_DSSSCCK40);
                ht_capie.ampdu_params_info = (IEEE80211_HT_CAP_AMPDU_FACTOR &
                                0x03) | (IEEE80211_HT_CAP_AMPDU_DENSITY & 0x00);
                r8712_set_ie(out_ie + out_len, _HT_CAPABILITY_IE_,
                             sizeof(struct ieee80211_ht_cap),
                             (unsigned char *)&ht_capie, pout_len);
                phtpriv->ht_option = 1;
        }
        return phtpriv->ht_option;
}

/* the function is > passive_level (in critical_section) */
static void update_ht_cap(struct _adapter *padapter, u8 *pie, uint ie_len)
{
        u8 *p, max_ampdu_sz;
        int i;
        uint len;
        struct sta_info *bmc_sta, *psta;
        struct ieee80211_ht_cap *pht_capie;
        struct recv_reorder_ctrl *preorder_ctrl;
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
        struct ht_priv *phtpriv = &pmlmepriv->htpriv;
        struct registry_priv *pregistrypriv = &padapter->registrypriv;
        struct wlan_network *pcur_network = &(pmlmepriv->cur_network);

        if (!phtpriv->ht_option)
                return;
        /* maybe needs check if ap supports rx ampdu. */
        if (!phtpriv->ampdu_enable &&
            (pregistrypriv->ampdu_enable == 1))
                phtpriv->ampdu_enable = true;
        /*check Max Rx A-MPDU Size*/
        len = 0;
        p = r8712_get_ie(pie + sizeof(struct NDIS_802_11_FIXED_IEs),
                                _HT_CAPABILITY_IE_,
                                &len, ie_len -
                                sizeof(struct NDIS_802_11_FIXED_IEs));
        if (p && len > 0) {
                pht_capie = (struct ieee80211_ht_cap *)(p + 2);
                max_ampdu_sz = (pht_capie->ampdu_params_info &
                                IEEE80211_HT_CAP_AMPDU_FACTOR);
                /* max_ampdu_sz (kbytes); */
                max_ampdu_sz = 1 << (max_ampdu_sz + 3);
                phtpriv->rx_ampdu_maxlen = max_ampdu_sz;
        }
        /* for A-MPDU Rx reordering buffer control for bmc_sta & sta_info
         * if A-MPDU Rx is enabled, resetting rx_ordering_ctrl
         * wstart_b(indicate_seq) to default value=0xffff
         * todo: check if AP can send A-MPDU packets
         */
        bmc_sta = r8712_get_bcmc_stainfo(padapter);
        if (bmc_sta) {
                for (i = 0; i < 16; i++) {
                        preorder_ctrl = &bmc_sta->recvreorder_ctrl[i];
                        preorder_ctrl->indicate_seq = 0xffff;
                        preorder_ctrl->wend_b = 0xffff;
                }
        }
        psta = r8712_get_stainfo(&padapter->stapriv,
                                 pcur_network->network.MacAddress);
        if (psta) {
                for (i = 0; i < 16; i++) {
                        preorder_ctrl = &psta->recvreorder_ctrl[i];
                        preorder_ctrl->indicate_seq = 0xffff;
                        preorder_ctrl->wend_b = 0xffff;
                }
        }
        len = 0;
        p = r8712_get_ie(pie + sizeof(struct NDIS_802_11_FIXED_IEs),
                   _HT_ADD_INFO_IE_, &len,
                   ie_len - sizeof(struct NDIS_802_11_FIXED_IEs));
}

void r8712_issue_addbareq_cmd(struct _adapter *padapter, int priority)
{
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
        struct ht_priv   *phtpriv = &pmlmepriv->htpriv;

        if ((phtpriv->ht_option == 1) && (phtpriv->ampdu_enable)) {
                if (!phtpriv->baddbareq_issued[priority]) {
                        r8712_addbareq_cmd(padapter, (u8)priority);
                        phtpriv->baddbareq_issued[priority] = true;
                }
        }
}