text: // SPDX-License-Identifier: GPL-2.0
  /******************************************************************************
   *
   * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   *
   ******************************************************************************/
  #define _OS_INTFS_C_
  
  #include <osdep_service.h>
  #include <osdep_intf.h>
  #include <drv_types.h>
  #include <xmit_osdep.h>
  #include <recv_osdep.h>
  #include <hal_intf.h>
  #include <rtw_ioctl.h>
  #include <rtl8188e_hal.h>
  
  MODULE_LICENSE("GPL");
  MODULE_DESCRIPTION("Realtek Wireless Lan Driver");
  MODULE_AUTHOR("Realtek Semiconductor Corp.");
  MODULE_VERSION(DRIVERVERSION);
  MODULE_FIRMWARE("rtlwifi/rtl8188eufw.bin");
  
  #define RTW_NOTCH_FILTER 0 /* 0:Disable, 1:Enable, */
  
  /* module param defaults */
  /* 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_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_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_ht_enable = 1;
  /* 0 :disable, bit(0): enable 2.4g, bit(1): enable 5g */
  static int rtw_cbw40_enable = 3;
  static int rtw_ampdu_enable = 1;/* for enable tx_ampdu */
  
  /* 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_rx_stbc = 1;
  static int rtw_ampdu_amsdu;/*  0: disabled, 1:enabled, 2:auto */
  
  static int rtw_wifi_spec;
  static int rtw_channel_plan = RT_CHANNEL_DOMAIN_MAX;
  
  static int rtw_antdiv_cfg = 2; /*  0:OFF , 1:ON, 2:decide by Efuse config */
  
  /* 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_antdiv_type;
  
  static int rtw_enusbss;/* 0:disable, 1:enable */
  
  static int rtw_hwpdn_mode = 2;/* 0:disable, 1:enable, 2: by EFUSE config */
  
  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");
  
  /* temp mac address if users want to use instead of the mac address in Efuse */
  char *rtw_initmac;
  
  module_param(rtw_initmac, charp, 0644);
  module_param(rtw_channel_plan, 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_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_power_mgnt, int, 0644);
  module_param(rtw_smart_ps, 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_enusbss, int, 0644);
  module_param(rtw_hwpdn_mode, 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 bool rtw_monitor_enable;
  module_param_named(monitor_enable, rtw_monitor_enable, bool, 0444);
  MODULE_PARM_DESC(monitor_enable, "Enable monitor interface (default: false)");
  
  static int netdev_close(struct net_device *pnetdev);
  
  static void loadparam(struct adapter *padapter, struct net_device *pnetdev)
  {
  	struct registry_priv *registry_par = &padapter->registrypriv;
  
  	GlobalDebugLevel = rtw_debug;
  
  	memcpy(registry_par->ssid.ssid, "ANY", 3);
  	registry_par->ssid.ssid_length = 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->smart_ps =  (u8)rtw_smart_ps;
  	registry_par->power_mgnt = (u8)rtw_power_mgnt;
  	registry_par->ips_mode = (u8)rtw_ips_mode;
  	registry_par->mp_mode = 0;
  	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->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->wifi_spec = (u8)rtw_wifi_spec;
  	registry_par->channel_plan = (u8)rtw_channel_plan;
  	registry_par->accept_addba_req = true;
  	registry_par->antdiv_cfg = (u8)rtw_antdiv_cfg;
  	registry_par->antdiv_type = (u8)rtw_antdiv_type;
  	registry_par->hwpdn_mode = (u8)rtw_hwpdn_mode;
  
  	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;
  	registry_par->monitor_enable = rtw_monitor_enable;
  }
  
  static int rtw_net_set_mac_address(struct net_device *pnetdev, void *p)
  {
  	struct adapter *padapter = 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 = netdev_priv(pnetdev);
  	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
  	struct recv_priv *precvpriv = &padapter->recvpriv;
  
  	padapter->stats.tx_packets = pxmitpriv->tx_pkts;
  	padapter->stats.rx_packets = 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 = 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,
  	.ndo_do_ioctl = rtw_ioctl,
  };
  
  static const struct device_type wlan_type = {
  	.name = "wlan",
  };
  
  struct net_device *rtw_init_netdev(void)
  {
  	struct adapter *padapter;
  	struct net_device *pnetdev;
  
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("+init_net_dev\n"));
  
  	pnetdev = alloc_etherdev_mq(sizeof(struct adapter), 4);
  	if (!pnetdev)
  		return NULL;
  
  	pnetdev->dev.type = &wlan_type;
  	padapter = 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;
  
  	loadparam(padapter, pnetdev);
  
  	return pnetdev;
  }
  
  static int rtw_start_drv_threads(struct adapter *padapter)
  {
  	int err = 0;
  
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("+%s\n", __func__));
  
  	padapter->cmdThread = kthread_run(rtw_cmd_thread, padapter,
  					  "RTW_CMD_THREAD");
  	if (IS_ERR(padapter->cmdThread))
  		err = PTR_ERR(padapter->cmdThread);
  	else
  		/* wait for cmd_thread to run */
  		wait_for_completion_interruptible(&padapter->cmdpriv.terminate_cmdthread_comp);
  
  	return err;
  }
  
  void rtw_stop_drv_threads(struct adapter *padapter)
  {
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("+%s\n", __func__));
  
  	/* Below is to terminate rtw_cmd_thread & event_thread... */
  	complete(&padapter->cmdpriv.cmd_queue_comp);
  	if (padapter->cmdThread)
  		wait_for_completion_interruptible(&padapter->cmdpriv.terminate_cmdthread_comp);
  }
  
  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->dot11AuthAlgrthm = dot11AuthAlgrthm_Open;
  	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 */
  	rtw_hal_def_value_init(padapter);
  
  	/* misc. */
  	padapter->bReadPortCancel = false;
  	padapter->bWritePortCancel = false;
  	return _SUCCESS;
  }
  
  u8 rtw_reset_drv_sw(struct adapter *padapter)
  {
  	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
  	struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
  
  	/* hal_priv */
  	rtw_hal_def_value_init(padapter);
  	padapter->bReadPortCancel = false;
  	padapter->bWritePortCancel = false;
  	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);
  	rtw_hal_sreset_init(padapter);
  	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;
  
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("+%s\n", __func__));
  
  	if ((rtw_init_cmd_priv(&padapter->cmdpriv)) == _FAIL) {
  		RT_TRACE(_module_os_intfs_c_, _drv_err_, ("\n Can't init cmd_priv\n"));
  		ret8 = _FAIL;
  		goto exit;
  	}
  
  	padapter->cmdpriv.padapter = padapter;
  
  	if (rtw_init_mlme_priv(padapter) == _FAIL) {
  		RT_TRACE(_module_os_intfs_c_, _drv_err_, ("\n Can't init mlme_priv\n"));
  		ret8 = _FAIL;
  		goto exit;
  	}
  
  	if (init_mlme_ext_priv(padapter) == _FAIL) {
  		RT_TRACE(_module_os_intfs_c_, _drv_err_, ("\n Can't init mlme_ext_priv\n"));
  		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);
  
  	rtw_hal_dm_init(padapter);
  	rtw_hal_sw_led_init(padapter);
  
  	rtw_hal_sreset_init(padapter);
  
  exit:
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("-%s\n", __func__));
  
  	return ret8;
  }
  
  void rtw_cancel_all_timer(struct adapter *padapter)
  {
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("+%s\n", __func__));
  
  	del_timer_sync(&padapter->mlmepriv.assoc_timer);
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("%s:cancel association timer complete!\n", __func__));
  
  	del_timer_sync(&padapter->mlmepriv.scan_to_timer);
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("%s:cancel scan_to_timer!\n", __func__));
  
  	del_timer_sync(&padapter->mlmepriv.dynamic_chk_timer);
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("%s:cancel dynamic_chk_timer!\n", __func__));
  
  	/*  cancel sw led timer */
  	rtw_hal_sw_led_deinit(padapter);
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("%s:cancel DeInitSwLeds!\n", __func__));
  
  	del_timer_sync(&padapter->pwrctrlpriv.pwr_state_check_timer);
  
  	del_timer_sync(&padapter->recvpriv.signal_stat_timer);
  }
  
  u8 rtw_free_drv_sw(struct adapter *padapter)
  {
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("==>%s", __func__));
  
  	free_mlme_ext_priv(&padapter->mlmeextpriv);
  
  	rtw_free_mlme_priv(&padapter->mlmepriv);
  	_rtw_free_xmit_priv(&padapter->xmitpriv);
  
  	/* will free bcmc_stainfo here */
  	_rtw_free_sta_priv(&padapter->stapriv);
  
  	_rtw_free_recv_priv(&padapter->recvpriv);
  
  	rtw_hal_free_data(padapter);
  
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("<== %s\n", __func__));
  
  	mutex_destroy(&padapter->hw_init_mutex);
  
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("-%s\n", __func__));
  
  	return _SUCCESS;
  }
  
  static int _netdev_open(struct net_device *pnetdev)
  {
  	uint status;
  	int err;
  	struct adapter *padapter = netdev_priv(pnetdev);
  	struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
  
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("+88eu_drv - dev_open\n"));
  	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;
  
  		status = rtw_hal_init(padapter);
  		if (status == _FAIL) {
  			RT_TRACE(_module_os_intfs_c_, _drv_err_, ("rtl88eu_hal_init(): Can't init h/w!\n"));
  			goto netdev_open_error;
  		}
  
  		pr_info("MAC Address = %pM\n", pnetdev->dev_addr);
  
  		err = rtw_start_drv_threads(padapter);
  		if (err) {
  			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;
  		}
  		rtw_hal_inirp_init(padapter);
  
  		led_control_8188eu(padapter, LED_CTL_NO_LINK);
  
  		padapter->bup = true;
  	}
  	padapter->net_closed = false;
  
  	mod_timer(&padapter->mlmepriv.dynamic_chk_timer,
  		  jiffies + msecs_to_jiffies(2000));
  
  	padapter->pwrctrlpriv.bips_processing = false;
  	rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);
  
  	if (!rtw_netif_queue_stopped(pnetdev))
  		netif_tx_start_all_queues(pnetdev);
  	else
  		netif_tx_wake_all_queues(pnetdev);
  
  netdev_open_normal_process:
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("-88eu_drv - dev_open\n"));
  	DBG_88E("-88eu_drv - drv_open, bup =%d\n", padapter->bup);
  	return 0;
  
  netdev_open_error:
  	padapter->bup = false;
  	netif_carrier_off(pnetdev);
  	netif_tx_stop_all_queues(pnetdev);
  	RT_TRACE(_module_os_intfs_c_, _drv_err_, ("-88eu_drv - dev_open, fail!\n"));
  	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 = netdev_priv(pnetdev);
  
  	if (mutex_lock_interruptible(&padapter->hw_init_mutex))
  		return -ERESTARTSYS;
  	ret = _netdev_open(pnetdev);
  	mutex_unlock(&padapter->hw_init_mutex);
  	return ret;
  }
  
  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;
  
  	status = rtw_hal_init(padapter);
  	if (status == _FAIL) {
  		RT_TRACE(_module_os_intfs_c_, _drv_err_, ("%s(): Can't init h/w!\n", __func__));
  		goto netdev_open_error;
  	}
  
  	rtw_hal_inirp_init(padapter);
  
  	rtw_set_pwr_state_check_timer(&padapter->pwrctrlpriv);
  	mod_timer(&padapter->mlmepriv.dynamic_chk_timer,
  		  jiffies + msecs_to_jiffies(5000));
  
  	return _SUCCESS;
  
  netdev_open_error:
  	DBG_88E("-%s - drv_open failure, bup =%d\n", __func__, padapter->bup);
  
  	return _FAIL;
  }
  
  int rtw_ips_pwr_up(struct adapter *padapter)
  {
  	int result;
  	unsigned long start_time = jiffies;
  
  	DBG_88E("===>  %s..............\n", __func__);
  	rtw_reset_drv_sw(padapter);
  
  	result = ips_netdrv_open(padapter);
  
  	led_control_8188eu(padapter, LED_CTL_NO_LINK);
  
  	DBG_88E("<===  %s.............. in %dms\n", __func__,
  		jiffies_to_msecs(jiffies - start_time));
  	return result;
  }
  
  void rtw_ips_pwr_down(struct adapter *padapter)
  {
  	unsigned long start_time = jiffies;
  
  	DBG_88E("===> %s...................\n", __func__);
  
  	padapter->net_closed = true;
  
  	led_control_8188eu(padapter, LED_CTL_POWER_OFF);
  
  	rtw_ips_dev_unload(padapter);
  	DBG_88E("<=== %s..................... in %dms\n", __func__,
  		jiffies_to_msecs(jiffies - start_time));
  }
  
  void rtw_ips_dev_unload(struct adapter *padapter)
  {
  	DBG_88E("====> %s...\n", __func__);
  
  	rtw_hal_set_hwreg(padapter, HW_VAR_FIFO_CLEARN_UP, NULL);
  
  	usb_intf_stop(padapter);
  
  	/* s5. */
  	if (!padapter->bSurpriseRemoved)
  		rtw_hal_deinit(padapter);
  }
  
  static int netdev_close(struct net_device *pnetdev)
  {
  	struct adapter *padapter = netdev_priv(pnetdev);
  
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("+88eu_drv - drv_close\n"));
  
  	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))
  				netif_tx_stop_all_queues(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);
  		/* s2-4. */
  		rtw_free_network_queue(padapter, true);
  		/*  Close LED */
  		led_control_8188eu(padapter, LED_CTL_POWER_OFF);
  	}
  
  	RT_TRACE(_module_os_intfs_c_, _drv_info_, ("-88eu_drv - drv_close\n"));
  	DBG_88E("-88eu_drv - drv_close, bup =%d\n", padapter->bup);
  	return 0;
  }
  