// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2007 - 2011 Realtek Corporation. */

#define _OS_INTFS_C_

#include "../include/osdep_service.h"
#include "../include/drv_types.h"
#include "../include/xmit_osdep.h"
#include "../include/recv_osdep.h"
#include "../include/hal_intf.h"
#include "../include/rtw_ioctl.h"
#include "../include/usb_osintf.h"
#include "../include/rtw_br_ext.h"
#include "../include/rtl8188e_led.h"
#include "../include/rtl8188e_dm.h"

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Realtek Wireless Lan Driver");
MODULE_AUTHOR("Realtek Semiconductor Corp.");
MODULE_VERSION(DRIVERVERSION);

#define CONFIG_BR_EXT_BRNAME "br0"
#define RTW_NOTCH_FILTER 0 /* 0:Disable, 1:Enable, */

/* module param defaults */
static int rtw_chip_version = 0x00;
static int rtw_rfintfs = HWPI;
static int rtw_lbkmode;/* RTL8712_AIR_TRX; */
static int rtw_network_mode = Ndis802_11IBSS;/* Ndis802_11Infrastructure; infra, ad-hoc, auto */
static int rtw_channel = 1;/* ad-hoc support requirement */
static int rtw_wireless_mode = WIRELESS_11BG_24N;
static int rtw_vrtl_carrier_sense = AUTO_VCS;
static int rtw_vcs_type = RTS_CTS;/*  */
static int rtw_rts_thresh = 2347;/*  */
static int rtw_frag_thresh = 2346;/*  */
static int rtw_preamble = PREAMBLE_LONG;/* long, short, auto */
static int rtw_scan_mode = 1;/* active, passive */
static int rtw_adhoc_tx_pwr = 1;
static int rtw_soft_ap;
static int rtw_power_mgnt = 1;
static int rtw_ips_mode = IPS_NORMAL;

static int rtw_smart_ps = 2;

module_param(rtw_ips_mode, int, 0644);
MODULE_PARM_DESC(rtw_ips_mode, "The default IPS mode");

static int rtw_debug = 1;
static int rtw_radio_enable = 1;
static int rtw_long_retry_lmt = 7;
static int rtw_short_retry_lmt = 7;
static int rtw_busy_thresh = 40;
static int rtw_ack_policy = NORMAL_ACK;

static int rtw_software_encrypt;
static int rtw_software_decrypt;

static int rtw_acm_method;/*  0:By SW 1:By HW. */

static int rtw_wmm_enable = 1;/*  default is set to enable the wmm. */
static int rtw_uapsd_enable;
static int rtw_uapsd_max_sp = NO_LIMIT;
static int rtw_uapsd_acbk_en;
static int rtw_uapsd_acbe_en;
static int rtw_uapsd_acvi_en;
static int rtw_uapsd_acvo_en;

static int rtw_led_enable = 1;

int rtw_ht_enable = 1;
int rtw_cbw40_enable = 3; /*  0 :disable, bit(0): enable 2.4g, bit(1): enable 5g */
int rtw_ampdu_enable = 1;/* for enable tx_ampdu */
static int rtw_rx_stbc = 1;/*  0: disable, bit(0):enable 2.4g, bit(1):enable 5g, default is set to enable 2.4GHZ for IOT issue with bufflao's AP at 5GHZ */
static int rtw_ampdu_amsdu;/*  0: disabled, 1:enabled, 2:auto */

static int rtw_lowrate_two_xmit = 1;/* Use 2 path Tx to transmit MCS0~7 and legacy mode */

static int rtw_rf_config = RF_819X_MAX_TYPE;  /* auto */
static int rtw_low_power;
static int rtw_wifi_spec;
static int rtw_channel_plan = RT_CHANNEL_DOMAIN_MAX;
static int rtw_AcceptAddbaReq = true;/*  0:Reject AP's Add BA req, 1:Accept AP's Add BA req. */

static int rtw_antdiv_cfg = 2; /*  0:OFF , 1:ON, 2:decide by Efuse config */
static int rtw_antdiv_type; /* 0:decide by efuse  1: for 88EE, 1Tx and 1RxCG are diversity.(2 Ant with SPDT), 2:  for 88EE, 1Tx and 2Rx are diversity.(2 Ant, Tx and RxCG are both on aux port, RxCS is on main port), 3: for 88EE, 1Tx and 1RxCG are fixed.(1Ant, Tx and RxCG are both on aux port) */


static int rtw_hwpdn_mode = 2;/* 0:disable, 1:enable, 2: by EFUSE config */

static int rtw_hwpwrp_detect; /* HW power  ping detect 0:disable , 1:enable */

static int rtw_hw_wps_pbc = 1;

int rtw_mc2u_disable;

static int rtw_80211d;

static char *ifname = "wlan%d";
module_param(ifname, charp, 0644);
MODULE_PARM_DESC(ifname, "The default name to allocate for first interface");

static char *if2name = "wlan%d";
module_param(if2name, charp, 0644);
MODULE_PARM_DESC(if2name, "The default name to allocate for second interface");

char *rtw_initmac;  /*  temp mac address if users want to use instead of the mac address in Efuse */

module_param(rtw_initmac, charp, 0644);
module_param(rtw_channel_plan, int, 0644);
module_param(rtw_chip_version, int, 0644);
module_param(rtw_rfintfs, int, 0644);
module_param(rtw_lbkmode, int, 0644);
module_param(rtw_network_mode, int, 0644);
module_param(rtw_channel, int, 0644);
module_param(rtw_wmm_enable, int, 0644);
module_param(rtw_vrtl_carrier_sense, int, 0644);
module_param(rtw_vcs_type, int, 0644);
module_param(rtw_busy_thresh, int, 0644);
module_param(rtw_led_enable, int, 0644);
module_param(rtw_ht_enable, int, 0644);
module_param(rtw_cbw40_enable, int, 0644);
module_param(rtw_ampdu_enable, int, 0644);
module_param(rtw_rx_stbc, int, 0644);
module_param(rtw_ampdu_amsdu, int, 0644);
module_param(rtw_lowrate_two_xmit, int, 0644);
module_param(rtw_rf_config, int, 0644);
module_param(rtw_power_mgnt, int, 0644);
module_param(rtw_smart_ps, int, 0644);
module_param(rtw_low_power, int, 0644);
module_param(rtw_wifi_spec, int, 0644);
module_param(rtw_antdiv_cfg, int, 0644);
module_param(rtw_antdiv_type, int, 0644);
module_param(rtw_hwpdn_mode, int, 0644);
module_param(rtw_hwpwrp_detect, int, 0644);
module_param(rtw_hw_wps_pbc, int, 0644);

static uint rtw_max_roaming_times = 2;
module_param(rtw_max_roaming_times, uint, 0644);
MODULE_PARM_DESC(rtw_max_roaming_times, "The max roaming times to try");

static int rtw_fw_iol = 1;/*  0:Disable, 1:enable, 2:by usb speed */
module_param(rtw_fw_iol, int, 0644);
MODULE_PARM_DESC(rtw_fw_iol, "FW IOL");

module_param(rtw_mc2u_disable, int, 0644);

module_param(rtw_80211d, int, 0644);
MODULE_PARM_DESC(rtw_80211d, "Enable 802.11d mechanism");

static uint rtw_notch_filter = RTW_NOTCH_FILTER;
module_param(rtw_notch_filter, uint, 0644);
MODULE_PARM_DESC(rtw_notch_filter, "0:Disable, 1:Enable, 2:Enable only for P2P");
module_param_named(debug, rtw_debug, int, 0444);
MODULE_PARM_DESC(debug, "Set debug level (1-9) (default 1)");

static uint loadparam(struct adapter *padapter,  struct  net_device *pnetdev)
{
        struct registry_priv  *registry_par = &padapter->registrypriv;

        GlobalDebugLevel = rtw_debug;
        registry_par->chip_version = (u8)rtw_chip_version;
        registry_par->rfintfs = (u8)rtw_rfintfs;
        registry_par->lbkmode = (u8)rtw_lbkmode;
        registry_par->network_mode  = (u8)rtw_network_mode;

        memcpy(registry_par->ssid.Ssid, "ANY", 3);
        registry_par->ssid.SsidLength = 3;

        registry_par->channel = (u8)rtw_channel;
        registry_par->wireless_mode = (u8)rtw_wireless_mode;
        registry_par->vrtl_carrier_sense = (u8)rtw_vrtl_carrier_sense;
        registry_par->vcs_type = (u8)rtw_vcs_type;
        registry_par->rts_thresh = (u16)rtw_rts_thresh;
        registry_par->frag_thresh = (u16)rtw_frag_thresh;
        registry_par->preamble = (u8)rtw_preamble;
        registry_par->scan_mode = (u8)rtw_scan_mode;
        registry_par->adhoc_tx_pwr = (u8)rtw_adhoc_tx_pwr;
        registry_par->soft_ap =  (u8)rtw_soft_ap;
        registry_par->smart_ps =  (u8)rtw_smart_ps;
        registry_par->power_mgnt = (u8)rtw_power_mgnt;
        registry_par->ips_mode = (u8)rtw_ips_mode;
        registry_par->radio_enable = (u8)rtw_radio_enable;
        registry_par->long_retry_lmt = (u8)rtw_long_retry_lmt;
        registry_par->short_retry_lmt = (u8)rtw_short_retry_lmt;
        registry_par->busy_thresh = (u16)rtw_busy_thresh;
        registry_par->ack_policy = (u8)rtw_ack_policy;
        registry_par->software_encrypt = (u8)rtw_software_encrypt;
        registry_par->software_decrypt = (u8)rtw_software_decrypt;
        registry_par->acm_method = (u8)rtw_acm_method;

         /* UAPSD */
        registry_par->wmm_enable = (u8)rtw_wmm_enable;
        registry_par->uapsd_enable = (u8)rtw_uapsd_enable;
        registry_par->uapsd_max_sp = (u8)rtw_uapsd_max_sp;
        registry_par->uapsd_acbk_en = (u8)rtw_uapsd_acbk_en;
        registry_par->uapsd_acbe_en = (u8)rtw_uapsd_acbe_en;
        registry_par->uapsd_acvi_en = (u8)rtw_uapsd_acvi_en;
        registry_par->uapsd_acvo_en = (u8)rtw_uapsd_acvo_en;

        registry_par->led_enable = (u8)rtw_led_enable;

        registry_par->ht_enable = (u8)rtw_ht_enable;
        registry_par->cbw40_enable = (u8)rtw_cbw40_enable;
        registry_par->ampdu_enable = (u8)rtw_ampdu_enable;
        registry_par->rx_stbc = (u8)rtw_rx_stbc;
        registry_par->ampdu_amsdu = (u8)rtw_ampdu_amsdu;
        registry_par->lowrate_two_xmit = (u8)rtw_lowrate_two_xmit;
        registry_par->rf_config = (u8)rtw_rf_config;
        registry_par->low_power = (u8)rtw_low_power;
        registry_par->wifi_spec = (u8)rtw_wifi_spec;
        registry_par->channel_plan = (u8)rtw_channel_plan;
        registry_par->bAcceptAddbaReq = (u8)rtw_AcceptAddbaReq;
        registry_par->antdiv_cfg = (u8)rtw_antdiv_cfg;
        registry_par->antdiv_type = (u8)rtw_antdiv_type;
        registry_par->hwpdn_mode = (u8)rtw_hwpdn_mode;/* 0:disable, 1:enable, 2:by EFUSE config */
        registry_par->hwpwrp_detect = (u8)rtw_hwpwrp_detect;/* 0:disable, 1:enable */
        registry_par->hw_wps_pbc = (u8)rtw_hw_wps_pbc;

        registry_par->max_roaming_times = (u8)rtw_max_roaming_times;

        registry_par->fw_iol = rtw_fw_iol;

        registry_par->enable80211d = (u8)rtw_80211d;
        snprintf(registry_par->ifname, 16, "%s", ifname);
        snprintf(registry_par->if2name, 16, "%s", if2name);
        registry_par->notch_filter = (u8)rtw_notch_filter;

        return _SUCCESS;
}

static int rtw_net_set_mac_address(struct net_device *pnetdev, void *p)
{
        struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev);
        struct sockaddr *addr = p;

        if (!padapter->bup)
                memcpy(padapter->eeprompriv.mac_addr, addr->sa_data, ETH_ALEN);

        return 0;
}

static struct net_device_stats *rtw_net_get_stats(struct net_device *pnetdev)
{
        struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev);
        struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
        struct recv_priv *precvpriv = &padapter->recvpriv;

        padapter->stats.tx_packets = pxmitpriv->tx_pkts;/* pxmitpriv->tx_pkts++; */
        padapter->stats.rx_packets = precvpriv->rx_pkts;/* precvpriv->rx_pkts++; */
        padapter->stats.tx_dropped = pxmitpriv->tx_drop;
        padapter->stats.rx_dropped = precvpriv->rx_drop;
        padapter->stats.tx_bytes = pxmitpriv->tx_bytes;
        padapter->stats.rx_bytes = precvpriv->rx_bytes;
        return &padapter->stats;
}

/*
 * AC to queue mapping
 *
 * AC_VO -> queue 0
 * AC_VI -> queue 1
 * AC_BE -> queue 2
 * AC_BK -> queue 3
 */
static const u16 rtw_1d_to_queue[8] = { 2, 3, 3, 2, 1, 1, 0, 0 };

/* Given a data frame determine the 802.1p/1d tag to use. */
static unsigned int rtw_classify8021d(struct sk_buff *skb)
{
        unsigned int dscp;

        /* skb->priority values from 256->263 are magic values to
         * directly indicate a specific 802.1d priority.  This is used
         * to allow 802.1d priority to be passed directly in from VLAN
         * tags, etc.
         */
        if (skb->priority >= 256 && skb->priority <= 263)
                return skb->priority - 256;

        switch (skb->protocol) {
        case htons(ETH_P_IP):
                dscp = ip_hdr(skb)->tos & 0xfc;
                break;
        default:
                return 0;
        }

        return dscp >> 5;
}

static u16 rtw_select_queue(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev)
{
        struct adapter  *padapter = rtw_netdev_priv(dev);
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;

        skb->priority = rtw_classify8021d(skb);

        if (pmlmepriv->acm_mask != 0)
                skb->priority = qos_acm(pmlmepriv->acm_mask, skb->priority);

        return rtw_1d_to_queue[skb->priority];
}

u16 rtw_recv_select_queue(struct sk_buff *skb)
{
        struct iphdr *piphdr;
        unsigned int dscp;
        __be16  eth_type;
        u32 priority;
        u8 *pdata = skb->data;

        memcpy(&eth_type, pdata + (ETH_ALEN << 1), 2);

        switch (eth_type) {
        case htons(ETH_P_IP):
                piphdr = (struct iphdr *)(pdata + ETH_HLEN);
                dscp = piphdr->tos & 0xfc;
                priority = dscp >> 5;
                break;
        default:
                priority = 0;
        }

        return rtw_1d_to_queue[priority];
}

static const struct net_device_ops rtw_netdev_ops = {
        .ndo_open = netdev_open,
        .ndo_stop = netdev_close,
        .ndo_start_xmit = rtw_xmit_entry,
        .ndo_select_queue       = rtw_select_queue,
        .ndo_set_mac_address = rtw_net_set_mac_address,
        .ndo_get_stats = rtw_net_get_stats,
};

int rtw_init_netdev_name(struct net_device *pnetdev, const char *ifname)
{
        int err;

        err = dev_alloc_name(pnetdev, ifname);
        if (err < 0)
                return err;

        netif_carrier_off(pnetdev);
        return 0;
}

static const struct device_type wlan_type = {
        .name = "wlan",
};

struct net_device *rtw_init_netdev(struct adapter *old_padapter)
{
        struct adapter *padapter;
        struct net_device *pnetdev;

        if (old_padapter)
                pnetdev = rtw_alloc_etherdev_with_old_priv(sizeof(struct adapter), (void *)old_padapter);
        else
                pnetdev = rtw_alloc_etherdev(sizeof(struct adapter));

        if (!pnetdev)
                return NULL;

        pnetdev->dev.type = &wlan_type;
        padapter = rtw_netdev_priv(pnetdev);
        padapter->pnetdev = pnetdev;
        DBG_88E("register rtw_netdev_ops to netdev_ops\n");
        pnetdev->netdev_ops = &rtw_netdev_ops;
        pnetdev->watchdog_timeo = HZ * 3; /* 3 second timeout */
        pnetdev->wireless_handlers = (struct iw_handler_def *)&rtw_handlers_def;

        /* step 2. */
        loadparam(padapter, pnetdev);

        return pnetdev;
}

u32 rtw_start_drv_threads(struct adapter *padapter)
{
        u32 _status = _SUCCESS;

        padapter->cmdThread = kthread_run(rtw_cmd_thread, padapter, "RTW_CMD_THREAD");
        if (IS_ERR(padapter->cmdThread))
                _status = _FAIL;
        else
                /* wait for rtw_cmd_thread() to start running */
                wait_for_completion(&padapter->cmdpriv.start_cmd_thread);

        return _status;
}

void rtw_stop_drv_threads(struct adapter *padapter)
{
        /* Below is to termindate rtw_cmd_thread & event_thread... */
        complete(&padapter->cmdpriv.enqueue_cmd);
        if (padapter->cmdThread)
                /* wait for rtw_cmd_thread() to stop running */
                wait_for_completion(&padapter->cmdpriv.stop_cmd_thread);
}

static u8 rtw_init_default_value(struct adapter *padapter)
{
        struct registry_priv *pregistrypriv = &padapter->registrypriv;
        struct xmit_priv        *pxmitpriv = &padapter->xmitpriv;
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
        struct security_priv *psecuritypriv = &padapter->securitypriv;

        /* xmit_priv */
        pxmitpriv->vcs_setting = pregistrypriv->vrtl_carrier_sense;
        pxmitpriv->vcs = pregistrypriv->vcs_type;
        pxmitpriv->vcs_type = pregistrypriv->vcs_type;
        pxmitpriv->frag_len = pregistrypriv->frag_thresh;

        /* mlme_priv */
        pmlmepriv->scan_interval = SCAN_INTERVAL;/*  30*2 sec = 60sec */
        pmlmepriv->scan_mode = SCAN_ACTIVE;

        /* ht_priv */
        pmlmepriv->htpriv.ampdu_enable = false;/* set to disabled */

        /* security_priv */
        psecuritypriv->binstallGrpkey = _FAIL;
        psecuritypriv->sw_encrypt = pregistrypriv->software_encrypt;
        psecuritypriv->sw_decrypt = pregistrypriv->software_decrypt;
        psecuritypriv->dot11AuthAlgrthm = dot11AuthAlgrthm_Open; /* open system */
        psecuritypriv->dot11PrivacyAlgrthm = _NO_PRIVACY_;
        psecuritypriv->dot11PrivacyKeyIndex = 0;
        psecuritypriv->dot118021XGrpPrivacy = _NO_PRIVACY_;
        psecuritypriv->dot118021XGrpKeyid = 1;
        psecuritypriv->ndisauthtype = Ndis802_11AuthModeOpen;
        psecuritypriv->ndisencryptstatus = Ndis802_11WEPDisabled;

        /* registry_priv */
        rtw_init_registrypriv_dev_network(padapter);
        rtw_update_registrypriv_dev_network(padapter);

        /* hal_priv */
        rtl8188eu_init_default_value(padapter);

        /* misc. */
        padapter->bReadPortCancel = false;
        padapter->bWritePortCancel = false;
        padapter->bRxRSSIDisplay = 0;
        padapter->bNotifyChannelChange = 0;
        padapter->bShowGetP2PState = 1;
        return _SUCCESS;
}

u8 rtw_reset_drv_sw(struct adapter *padapter)
{
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
        struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;

        /* hal_priv */
        rtl8188eu_init_default_value(padapter);
        padapter->bReadPortCancel = false;
        padapter->bWritePortCancel = false;
        padapter->bRxRSSIDisplay = 0;
        pmlmepriv->scan_interval = SCAN_INTERVAL;/*  30*2 sec = 60sec */

        padapter->xmitpriv.tx_pkts = 0;
        padapter->recvpriv.rx_pkts = 0;

        pmlmepriv->LinkDetectInfo.bBusyTraffic = false;

        _clr_fwstate_(pmlmepriv, _FW_UNDER_SURVEY | _FW_UNDER_LINKING);

        pwrctrlpriv->pwr_state_check_cnts = 0;

        /* mlmeextpriv */
        padapter->mlmeextpriv.sitesurvey_res.state = SCAN_DISABLE;

        rtw_set_signal_stat_timer(&padapter->recvpriv);

        return _SUCCESS;
}

u8 rtw_init_drv_sw(struct adapter *padapter)
{
        u8      ret8 = _SUCCESS;

        if ((rtw_init_cmd_priv(&padapter->cmdpriv)) == _FAIL) {
                ret8 = _FAIL;
                goto exit;
        }

        padapter->cmdpriv.padapter = padapter;

        if ((rtw_init_evt_priv(&padapter->evtpriv)) == _FAIL) {
                ret8 = _FAIL;
                goto exit;
        }

        if (rtw_init_mlme_priv(padapter) == _FAIL) {
                ret8 = _FAIL;
                goto exit;
        }

        rtw_init_wifidirect_timers(padapter);
        init_wifidirect_info(padapter, P2P_ROLE_DISABLE);
        reset_global_wifidirect_info(padapter);

        if (init_mlme_ext_priv(padapter) == _FAIL) {
                ret8 = _FAIL;
                goto exit;
        }

        if (_rtw_init_xmit_priv(&padapter->xmitpriv, padapter) == _FAIL) {
                DBG_88E("Can't _rtw_init_xmit_priv\n");
                ret8 = _FAIL;
                goto exit;
        }

        if (_rtw_init_recv_priv(&padapter->recvpriv, padapter) == _FAIL) {
                DBG_88E("Can't _rtw_init_recv_priv\n");
                ret8 = _FAIL;
                goto exit;
        }

        if (_rtw_init_sta_priv(&padapter->stapriv) == _FAIL) {
                DBG_88E("Can't _rtw_init_sta_priv\n");
                ret8 = _FAIL;
                goto exit;
        }

        padapter->stapriv.padapter = padapter;

        rtw_init_bcmc_stainfo(padapter);

        rtw_init_pwrctrl_priv(padapter);

        ret8 = rtw_init_default_value(padapter);

        rtl8188e_init_dm_priv(padapter);
        rtl8188eu_InitSwLeds(padapter);

        spin_lock_init(&padapter->br_ext_lock);

exit:
        return ret8;
}

void rtw_cancel_all_timer(struct adapter *padapter)
{
        _cancel_timer_ex(&padapter->mlmepriv.assoc_timer);

        _cancel_timer_ex(&padapter->mlmepriv.scan_to_timer);

        _cancel_timer_ex(&padapter->mlmepriv.dynamic_chk_timer);

        /*  cancel sw led timer */
        rtl8188eu_DeInitSwLeds(padapter);

        _cancel_timer_ex(&padapter->pwrctrlpriv.pwr_state_check_timer);

        _cancel_timer_ex(&padapter->recvpriv.signal_stat_timer);
}

u8 rtw_free_drv_sw(struct adapter *padapter)
{
        /* we can call rtw_p2p_enable here, but: */
        /*  1. rtw_p2p_enable may have IO operation */
        /*  2. rtw_p2p_enable is bundled with wext interface */
        {
                struct wifidirect_info *pwdinfo = &padapter->wdinfo;
                if (!rtw_p2p_chk_state(pwdinfo, P2P_STATE_NONE)) {
                        _cancel_timer_ex(&pwdinfo->find_phase_timer);
                        _cancel_timer_ex(&pwdinfo->restore_p2p_state_timer);
                        _cancel_timer_ex(&pwdinfo->pre_tx_scan_timer);
                        rtw_p2p_set_state(pwdinfo, P2P_STATE_NONE);
                }
        }

        free_mlme_ext_priv(&padapter->mlmeextpriv);

        rtw_free_cmd_priv(&padapter->cmdpriv);

        rtw_free_evt_priv(&padapter->evtpriv);

        rtw_free_mlme_priv(&padapter->mlmepriv);
        _rtw_free_xmit_priv(&padapter->xmitpriv);

        _rtw_free_sta_priv(&padapter->stapriv); /* will free bcmc_stainfo here */

        _rtw_free_recv_priv(&padapter->recvpriv);

        rtl8188e_free_hal_data(padapter);

        /* free the old_pnetdev */
        if (padapter->rereg_nd_name_priv.old_pnetdev) {
                free_netdev(padapter->rereg_nd_name_priv.old_pnetdev);
                padapter->rereg_nd_name_priv.old_pnetdev = NULL;
        }

        /*  clear pbuddystruct adapter to avoid access wrong pointer. */
        if (padapter->pbuddy_adapter)
                padapter->pbuddy_adapter->pbuddy_adapter = NULL;

        return _SUCCESS;
}

void netdev_br_init(struct net_device *netdev)
{
        struct adapter *adapter = (struct adapter *)rtw_netdev_priv(netdev);

        rcu_read_lock();

        if (rcu_dereference(adapter->pnetdev->rx_handler_data)) {
                struct net_device *br_netdev;
                struct net *devnet = NULL;

                devnet = dev_net(netdev);
                br_netdev = dev_get_by_name(devnet, CONFIG_BR_EXT_BRNAME);
                if (br_netdev) {
                        memcpy(adapter->br_mac, br_netdev->dev_addr, ETH_ALEN);
                        dev_put(br_netdev);
                } else {
                        pr_info("%s()-%d: dev_get_by_name(%s) failed!",
                                __func__, __LINE__, CONFIG_BR_EXT_BRNAME);
                }
        }
        adapter->ethBrExtInfo.addPPPoETag = 1;

        rcu_read_unlock();
}

int _netdev_open(struct net_device *pnetdev)
{
        uint status;
        struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev);
        struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;

        DBG_88E("+88eu_drv - drv_open, bup =%d\n", padapter->bup);

        if (pwrctrlpriv->ps_flag) {
                padapter->net_closed = false;
                goto netdev_open_normal_process;
        }

        if (!padapter->bup) {
                padapter->bDriverStopped = false;
                padapter->bSurpriseRemoved = false;
                padapter->bCardDisableWOHSM = false;

                status = rtw_hal_init(padapter);
                if (status == _FAIL)
                        goto netdev_open_error;

                pr_info("MAC Address = %pM\n", pnetdev->dev_addr);

                status = rtw_start_drv_threads(padapter);
                if (status == _FAIL) {
                        pr_info("Initialize driver software resource Failed!\n");
                        goto netdev_open_error;
                }

                if (init_hw_mlme_ext(padapter) == _FAIL) {
                        pr_info("can't init mlme_ext_priv\n");
                        goto netdev_open_error;
                }
                if (padapter->intf_start)
                        padapter->intf_start(padapter);

                rtw_led_control(padapter, LED_CTL_NO_LINK);

                padapter->bup = true;
        }
        padapter->net_closed = false;

        _set_timer(&padapter->mlmepriv.dynamic_chk_timer, 2000);

        padapter->pwrctrlpriv.bips_processing = false;
        rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);

        if (!rtw_netif_queue_stopped(pnetdev))
                rtw_netif_start_queue(pnetdev);
        else
                rtw_netif_wake_queue(pnetdev);

        netdev_br_init(pnetdev);

netdev_open_normal_process:
        DBG_88E("-88eu_drv - drv_open, bup =%d\n", padapter->bup);
        return 0;

netdev_open_error:
        padapter->bup = false;
        netif_carrier_off(pnetdev);
        rtw_netif_stop_queue(pnetdev);
        DBG_88E("-88eu_drv - drv_open fail, bup =%d\n", padapter->bup);
        return -1;
}

int netdev_open(struct net_device *pnetdev)
{
        int ret;
        struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev);

        mutex_lock(padapter->hw_init_mutex);
        ret = _netdev_open(pnetdev);
        mutex_unlock(padapter->hw_init_mutex);
        return ret;
}

static int  ips_netdrv_open(struct adapter *padapter)
{
        int status = _SUCCESS;
        padapter->net_closed = false;
        DBG_88E("===> %s.........\n", __func__);

        padapter->bDriverStopped = false;
        padapter->bSurpriseRemoved = false;
        padapter->bCardDisableWOHSM = false;

        status = rtw_hal_init(padapter);
        if (status == _FAIL)
                goto netdev_open_error;

        if (padapter->intf_start)
                padapter->intf_start(padapter);

        rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);
        _set_timer(&padapter->mlmepriv.dynamic_chk_timer, 5000);

        return _SUCCESS;

netdev_open_error:
        DBG_88E("-ips_netdrv_open - drv_open failure, bup =%d\n", padapter->bup);

        return _FAIL;
}

int rtw_ips_pwr_up(struct adapter *padapter)
{
        int result;
        u32 start_time = jiffies;
        DBG_88E("===>  rtw_ips_pwr_up..............\n");
        rtw_reset_drv_sw(padapter);

        result = ips_netdrv_open(padapter);

        rtw_led_control(padapter, LED_CTL_NO_LINK);

        DBG_88E("<===  rtw_ips_pwr_up.............. in %dms\n", rtw_get_passing_time_ms(start_time));
        return result;
}

void rtw_ips_pwr_down(struct adapter *padapter)
{
        u32 start_time = jiffies;
        DBG_88E("===> rtw_ips_pwr_down...................\n");

        padapter->bCardDisableWOHSM = true;
        padapter->net_closed = true;

        rtw_led_control(padapter, LED_CTL_POWER_OFF);

        rtw_ips_dev_unload(padapter);
        padapter->bCardDisableWOHSM = false;
        DBG_88E("<=== rtw_ips_pwr_down..................... in %dms\n", rtw_get_passing_time_ms(start_time));
}

void rtw_ips_dev_unload(struct adapter *padapter)
{
        DBG_88E("====> %s...\n", __func__);

        SetHwReg8188EU(padapter, HW_VAR_FIFO_CLEARN_UP, NULL);

        if (padapter->intf_stop)
                padapter->intf_stop(padapter);

        /* s5. */
        if (!padapter->bSurpriseRemoved)
                rtw_hal_deinit(padapter);
}

int pm_netdev_open(struct net_device *pnetdev, u8 bnormal)
{
        int status;

        if (bnormal)
                status = netdev_open(pnetdev);
        else
                status =  (_SUCCESS == ips_netdrv_open((struct adapter *)rtw_netdev_priv(pnetdev))) ? (0) : (-1);
        return status;
}

int netdev_close(struct net_device *pnetdev)
{
        struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev);
        struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);

        if (padapter->pwrctrlpriv.bInternalAutoSuspend) {
                if (padapter->pwrctrlpriv.rf_pwrstate == rf_off)
                        padapter->pwrctrlpriv.ps_flag = true;
        }
        padapter->net_closed = true;

        if (padapter->pwrctrlpriv.rf_pwrstate == rf_on) {
                DBG_88E("(2)88eu_drv - drv_close, bup =%d, hw_init_completed =%d\n",
                        padapter->bup, padapter->hw_init_completed);

                /* s1. */
                if (pnetdev) {
                        if (!rtw_netif_queue_stopped(pnetdev))
                                rtw_netif_stop_queue(pnetdev);
                }

                /* s2. */
                LeaveAllPowerSaveMode(padapter);
                rtw_disassoc_cmd(padapter, 500, false);
                /* s2-2.  indicate disconnect to os */
                rtw_indicate_disconnect(padapter);
                /* s2-3. */
                rtw_free_assoc_resources(padapter, 1);
                /* s2-4. */
                rtw_free_network_queue(padapter, true);
                /*  Close LED */
                rtw_led_control(padapter, LED_CTL_POWER_OFF);
        }

        nat25_db_cleanup(padapter);

        rtw_p2p_enable(padapter, P2P_ROLE_DISABLE);

        kfree(dvobj->firmware.szFwBuffer);
        dvobj->firmware.szFwBuffer = NULL;

        DBG_88E("-88eu_drv - drv_close, bup =%d\n", padapter->bup);
        return 0;
}