示例#1
0
static int rtl_op_add_interface(struct ieee80211_hw *hw,
		struct ieee80211_vif *vif)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	int err = 0;

	if (mac->vif) {
		RT_TRACE(COMP_ERR, DBG_WARNING,
			 ("vif has been set!! mac->vif = 0x%p\n", mac->vif));
		return -EOPNOTSUPP;
	}

/*This flag is not defined before kernel 3.4*/
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
	vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
#endif

	rtl_ips_nic_on(hw);

	mutex_lock(&rtlpriv->locks.conf_mutex);
/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
	switch (ieee80211_vif_type_p2p(vif)) {	
	case NL80211_IFTYPE_P2P_CLIENT:
		mac->p2p = P2P_ROLE_CLIENT;
		/*fall through*/
#else
/*<delete in kernel end>*/
	switch (vif->type) {
/*<delete in kernel start>*/	
#endif
/*<delete in kernel end>*/
	case NL80211_IFTYPE_STATION:
		if (mac->beacon_enabled == 1) {
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("NL80211_IFTYPE_STATION \n"));
			mac->beacon_enabled = 0;
			rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
					rtlpriv->cfg->maps[RTL_IBSS_INT_MASKS]);
		}
		break;
	case NL80211_IFTYPE_ADHOC:
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("NL80211_IFTYPE_ADHOC \n"));

		mac->link_state = MAC80211_LINKED;
		rtlpriv->cfg->ops->set_bcn_reg(hw);
		if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
			mac->basic_rates = 0xfff;
		else
			mac->basic_rates = 0xff0;
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
				(u8 *) (&mac->basic_rates));

		break;
/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
	case NL80211_IFTYPE_P2P_GO:
		mac->p2p = P2P_ROLE_GO;
		/*fall through*/
#endif
/*<delete in kernel end>*/
	case NL80211_IFTYPE_AP:
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("NL80211_IFTYPE_AP \n"));

		mac->link_state = MAC80211_LINKED;
		rtlpriv->cfg->ops->set_bcn_reg(hw);
		if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
			mac->basic_rates = 0xfff;
		else
			mac->basic_rates = 0xff0;
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
					      (u8 *) (&mac->basic_rates));
		break;
	case NL80211_IFTYPE_MESH_POINT:
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("NL80211_IFTYPE_MESH_POINT \n"));
	
		mac->link_state = MAC80211_LINKED;
		rtlpriv->cfg->ops->set_bcn_reg(hw);
		if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
			mac->basic_rates = 0xfff;
		else
			mac->basic_rates = 0xff0;
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
				(u8 *) (&mac->basic_rates));
		break;
	default:
		RT_TRACE(COMP_ERR, DBG_EMERG,
			 ("operation mode %d is not support!\n", vif->type));
		err = -EOPNOTSUPP;
		goto out;
	}

#ifdef VIF_TODO
	if (!rtl_set_vif_info(hw, vif))
		goto out;
#endif

	if (mac->p2p) {
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("p2p role %x \n",vif->type));		
		mac->basic_rates = 0xff0;/*disable cck rate for p2p*/
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
				(u8 *) (&mac->basic_rates));		
	}
	mac->vif = vif;
	mac->opmode = vif->type;
	rtlpriv->cfg->ops->set_network_type(hw, vif->type);
	memcpy(mac->mac_addr, vif->addr, ETH_ALEN);
	rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ETHER_ADDR, mac->mac_addr);

out:
	mutex_unlock(&rtlpriv->locks.conf_mutex);
	return err;
}

static void rtl_op_remove_interface(struct ieee80211_hw *hw,
		struct ieee80211_vif *vif)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));

	mutex_lock(&rtlpriv->locks.conf_mutex);

	/* Free beacon resources */
	if ((vif->type == NL80211_IFTYPE_AP) ||
	    (vif->type == NL80211_IFTYPE_ADHOC) ||
	    (vif->type == NL80211_IFTYPE_MESH_POINT)) {
		if (mac->beacon_enabled == 1) {
			mac->beacon_enabled = 0;
			rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
					rtlpriv->cfg->maps[RTL_IBSS_INT_MASKS]);
		}
	}

	/*
	 *Note: We assume NL80211_IFTYPE_UNSPECIFIED as
	 *NO LINK for our hardware.
	 */
	mac->p2p = 0; 
	mac->vif = NULL;
	mac->link_state = MAC80211_NOLINK;
	memset(mac->bssid, 0, 6);
	mac->vendor = PEER_UNKNOWN;
	mac->opmode = NL80211_IFTYPE_UNSPECIFIED;
	rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);

	mutex_unlock(&rtlpriv->locks.conf_mutex);
}
/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
/*<delete in kernel end>*/	
static int rtl_op_change_interface(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif,
				   enum nl80211_iftype new_type, bool p2p)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	int ret;
	rtl_op_remove_interface(hw, vif);

	vif->type = new_type;
	vif->p2p = p2p;
	ret = rtl_op_add_interface(hw, vif);
	RT_TRACE(COMP_MAC80211, DBG_LOUD,
		 (" p2p  %x\n",p2p));
	return ret;
}
/*<delete in kernel start>*/
#endif
/*<delete in kernel end>*/	
static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
	struct ieee80211_conf *conf = &hw->conf;
	
	if (mac->skip_scan)
		return 1;
	
	mutex_lock(&rtlpriv->locks.conf_mutex);	
	if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {	/* BIT(2) */
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("IEEE80211_CONF_CHANGE_LISTEN_INTERVAL\n"));
	}

	/*For IPS */
	if (changed & IEEE80211_CONF_CHANGE_IDLE) {
		if (hw->conf.flags & IEEE80211_CONF_IDLE)
			rtl_ips_nic_off(hw);
		else
			rtl_ips_nic_on(hw);
	} else {
		/*
		 *although rfoff may not cause by ips, but we will
		 *check the reason in set_rf_power_state function
		 */
		if (unlikely(ppsc->rfpwr_state == ERFOFF))
			rtl_ips_nic_on(hw);
	}

	/*For LPS */
	if (changed & IEEE80211_CONF_CHANGE_PS) {
		cancel_delayed_work(&rtlpriv->works.ps_work);
		cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
		if (conf->flags & IEEE80211_CONF_PS) {
			rtlpriv->psc.sw_ps_enabled = true;
			/* sleep here is must, or we may recv the beacon and
			 * cause mac80211 into wrong ps state, this will cause
			 * power save nullfunc send fail, and further cause
			 * pkt loss, So sleep must quickly but not immediatly
			 * because that will cause nullfunc send by mac80211
			 * fail, and cause pkt loss, we have tested that 5mA
			 * is worked very well */
			if (!rtlpriv->psc.multi_buffered)
				queue_delayed_work(rtlpriv->works.rtl_wq,
						   &rtlpriv->works.ps_work, 
						   MSECS(5));
		} else {
			rtl_swlps_rf_awake(hw);
			rtlpriv->psc.sw_ps_enabled = false;
		}
	}

	if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("IEEE80211_CONF_CHANGE_RETRY_LIMITS %x\n",
			  hw->conf.long_frame_max_tx_count));
		mac->retry_long = hw->conf.long_frame_max_tx_count;
		mac->retry_short = hw->conf.long_frame_max_tx_count;
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
				(u8 *) (&hw->conf.long_frame_max_tx_count));
	}

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0))
		struct ieee80211_channel *channel = hw->conf.chandef.chan;
		enum nl80211_channel_type channel_type = 
				cfg80211_get_chandef_type(&(hw->conf.chandef)); 
#else
		struct ieee80211_channel *channel = hw->conf.channel;
		enum nl80211_channel_type channel_type = hw->conf.channel_type;
#endif
		u8 wide_chan = (u8) channel->hw_value;

		if (mac->act_scanning)
			mac->n_channels++;

		if (rtlpriv->dm.supp_phymode_switch &&
			mac->link_state < MAC80211_LINKED &&
			!mac->act_scanning) {
			if (rtlpriv->cfg->ops->check_switch_to_dmdp)
				rtlpriv->cfg->ops->check_switch_to_dmdp(hw);
		}

		/*
		 *because we should back channel to
		 *current_network.chan in in scanning,
		 *So if set_chan == current_network.chan
		 *we should set it.
		 *because mac80211 tell us wrong bw40
		 *info for cisco1253 bw20, so we modify
		 *it here based on UPPER & LOWER
		 */
		switch (channel_type) {
			case NL80211_CHAN_HT20:
			case NL80211_CHAN_NO_HT:
				/* SC */
				mac->cur_40_prime_sc =
					PRIME_CHNL_OFFSET_DONT_CARE;
				rtlphy->current_chan_bw = HT_CHANNEL_WIDTH_20;
				mac->bw_40 = false;
				break;
			case NL80211_CHAN_HT40MINUS:
				/* SC */
				mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_UPPER;
				rtlphy->current_chan_bw =
					HT_CHANNEL_WIDTH_20_40;
				mac->bw_40 = true;

				/*wide channel */
				wide_chan -= 2;

				break;
			case NL80211_CHAN_HT40PLUS:
				/* SC */
				mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_LOWER;
				rtlphy->current_chan_bw =
					HT_CHANNEL_WIDTH_20_40;
				mac->bw_40 = true;

				/*wide channel */
				wide_chan += 2;

				break;
			default:
				mac->bw_40 = false;
				RT_TRACE(COMP_ERR, DBG_EMERG,
					 ("switch case not processed \n"));
				break;
		}

		if (wide_chan <= 0)
			wide_chan = 1;

		/* in scanning, when before we offchannel we may send a ps=1
		 * null to AP, and then we may send a ps = 0 null to AP quickly,
		 * but first null have cause AP's put lots of packet to hw tx
		 * buffer, these packet must be tx before off channel so we must
		 * delay more time to let AP flush these packets before
		 * offchannel, or dis-association or delete BA will happen by AP
		 */
		if (rtlpriv->mac80211.offchan_deley) {
			rtlpriv->mac80211.offchan_deley = false;
			mdelay(50);
		}

		rtlphy->current_channel = wide_chan;

		rtlpriv->cfg->ops->switch_channel(hw);
		rtlpriv->cfg->ops->set_channel_access(hw);
		rtlpriv->cfg->ops->set_bw_mode(hw,
			channel_type);
	}

	mutex_unlock(&rtlpriv->locks.conf_mutex);

	return 0;
}

static void rtl_op_configure_filter(struct ieee80211_hw *hw,
				    unsigned int changed_flags,
				    unsigned int *new_flags, u64 multicast)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));

	*new_flags &= RTL_SUPPORTED_FILTERS;
	if (0 == changed_flags)
		return;

	/*TODO: we disable broadcase now, so enable here */
	if (changed_flags & FIF_ALLMULTI) {
		if (*new_flags & FIF_ALLMULTI) {
			mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AM] |
			    rtlpriv->cfg->maps[MAC_RCR_AB];
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("Enable receive multicast frame.\n"));
		} else {
			mac->rx_conf &= ~(rtlpriv->cfg->maps[MAC_RCR_AM] |
					  rtlpriv->cfg->maps[MAC_RCR_AB]);
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("Disable receive multicast frame.\n"));
		}
	}

	if (changed_flags & FIF_FCSFAIL) {
		if (*new_flags & FIF_FCSFAIL) {
			mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACRC32];
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("Enable receive FCS error frame.\n"));
		} else {
			mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACRC32];
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("Disable receive FCS error frame.\n"));
		}
	}

	/* if ssid not set to hw don't check bssid
	 * here just used for linked scanning, & linked
	 * and nolink check bssid is set in set network_type */
	if ((changed_flags & FIF_BCN_PRBRESP_PROMISC) &&
		(mac->link_state >= MAC80211_LINKED)) {
		if (mac->opmode != NL80211_IFTYPE_AP &&
			mac->opmode != NL80211_IFTYPE_MESH_POINT) {
			if (*new_flags & FIF_BCN_PRBRESP_PROMISC) {
				rtlpriv->cfg->ops->set_chk_bssid(hw, false);
			} else {
				rtlpriv->cfg->ops->set_chk_bssid(hw, true);
			}
		}
	}

	if (changed_flags & FIF_CONTROL) {
		if (*new_flags & FIF_CONTROL) {
			mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACF];

			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("Enable receive control frame.\n"));
		} else {
			mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACF];
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("Disable receive control frame.\n"));
		}
	}

	if (changed_flags & FIF_OTHER_BSS) {
		if (*new_flags & FIF_OTHER_BSS) {
			mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AAP];
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("Enable receive other BSS's frame.\n"));
		} else {
			mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_AAP];
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("Disable receive other BSS's frame.\n"));
		}
	}
}
static int rtl_op_sta_add(struct ieee80211_hw *hw,
			 struct ieee80211_vif *vif,
			 struct ieee80211_sta *sta)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_hal *rtlhal= rtl_hal(rtl_priv(hw));
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));	
	struct rtl_sta_info *sta_entry;

	if (sta) {
		sta_entry = (struct rtl_sta_info *) sta->drv_priv;
		spin_lock_bh(&rtlpriv->locks.entry_list_lock);		
		list_add_tail(&sta_entry->list, &rtlpriv->entry_list);
		spin_unlock_bh(&rtlpriv->locks.entry_list_lock);
		if (rtlhal->current_bandtype == BAND_ON_2_4G) {
			sta_entry->wireless_mode = WIRELESS_MODE_G;
			if (sta->supp_rates[0] <= 0xf)
				sta_entry->wireless_mode = WIRELESS_MODE_B;
			if (sta->ht_cap.ht_supported == true)
				sta_entry->wireless_mode = WIRELESS_MODE_N_24G;

			if (vif->type == NL80211_IFTYPE_ADHOC)
				sta_entry->wireless_mode = WIRELESS_MODE_G;
		} else if (rtlhal->current_bandtype == BAND_ON_5G) {
			sta_entry->wireless_mode = WIRELESS_MODE_A;
			if (sta->ht_cap.ht_supported == true)
				sta_entry->wireless_mode = WIRELESS_MODE_N_24G;

			if (vif->type == NL80211_IFTYPE_ADHOC)
				sta_entry->wireless_mode = WIRELESS_MODE_A;
		}
		/*disable cck rate for p2p*/
		if (mac->p2p)
			sta->supp_rates[0] &= 0xfffffff0;
		
		memcpy(sta_entry->mac_addr, sta->addr, ETH_ALEN);
		RT_TRACE(COMP_MAC80211, DBG_DMESG,
			("Add sta addr is %pM\n",sta->addr));
		rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
	}

	return 0;
}

static int rtl_op_sta_remove(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_sta_info *sta_entry;
	if (sta) {
		RT_TRACE(COMP_MAC80211, DBG_DMESG,
			("Remove sta addr is %pM\n",sta->addr));
		sta_entry = (struct rtl_sta_info *) sta->drv_priv;
		sta_entry->wireless_mode = 0;
		sta_entry->ratr_index = 0;
		spin_lock_bh(&rtlpriv->locks.entry_list_lock);
		list_del(&sta_entry->list);
		spin_unlock_bh(&rtlpriv->locks.entry_list_lock);
	}
	return 0;
}
static int _rtl_get_hal_qnum(u16 queue)
{
	int qnum;

	switch (queue) {
	case 0:
		qnum = AC3_VO;
		break;
	case 1:
		qnum = AC2_VI;
		break;
	case 2:
		qnum = AC0_BE;
		break;
	case 3:
		qnum = AC1_BK;
		break;
	default:
		qnum = AC0_BE;
		break;
	}
	return qnum;
}
示例#2
0
static int rtl_op_add_interface(struct ieee80211_hw *hw,
		struct ieee80211_vif *vif)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	int err = 0;

	if (mac->vif) {
		RT_TRACE(COMP_ERR, DBG_WARNING,
			 ("vif has been set!! mac->vif = 0x%p\n", mac->vif));
		return -EOPNOTSUPP;
	}

	vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;

	rtl_ips_nic_on(hw);

	mutex_lock(&rtlpriv->locks.conf_mutex);
	switch (ieee80211_vif_type_p2p(vif)) {
	case NL80211_IFTYPE_P2P_CLIENT:
		mac->p2p = P2P_ROLE_CLIENT;
		/*fall through*/
	case NL80211_IFTYPE_STATION:
		if (mac->beacon_enabled == 1) {
			RT_TRACE(COMP_MAC80211, DBG_LOUD,
				 ("NL80211_IFTYPE_STATION \n"));
			mac->beacon_enabled = 0;
			rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
					rtlpriv->cfg->maps[RTL_IBSS_INT_MASKS]);
		}
		break;
	case NL80211_IFTYPE_ADHOC:
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("NL80211_IFTYPE_ADHOC \n"));

		mac->link_state = MAC80211_LINKED;
		rtlpriv->cfg->ops->set_bcn_reg(hw);
		if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
			mac->basic_rates = 0xfff;
		else
			mac->basic_rates = 0xff0;
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
				(u8 *) (&mac->basic_rates));

		break;
	case NL80211_IFTYPE_P2P_GO:
		mac->p2p = P2P_ROLE_GO;
		/*fall through*/
	case NL80211_IFTYPE_AP:
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("NL80211_IFTYPE_AP \n"));

		mac->link_state = MAC80211_LINKED;
		rtlpriv->cfg->ops->set_bcn_reg(hw);
		if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
			mac->basic_rates = 0xfff;
		else
			mac->basic_rates = 0xff0;
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
					      (u8 *) (&mac->basic_rates));
		break;
	case NL80211_IFTYPE_MESH_POINT:
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("NL80211_IFTYPE_MESH_POINT \n"));

		mac->link_state = MAC80211_LINKED;
		rtlpriv->cfg->ops->set_bcn_reg(hw);
		if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
			mac->basic_rates = 0xfff;
		else
			mac->basic_rates = 0xff0;
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
				(u8 *) (&mac->basic_rates));
		break;
	default:
		RT_TRACE(COMP_ERR, DBG_EMERG,
			 ("operation mode %d is not support!\n", vif->type));
		err = -EOPNOTSUPP;
		goto out;
	}

#ifdef VIF_TODO
	if (!rtl_set_vif_info(hw, vif))
		goto out;
#endif

	if (mac->p2p) {
		RT_TRACE(COMP_MAC80211, DBG_LOUD,
			 ("p2p role %x \n",vif->type));
		mac->basic_rates = 0xff0;/*disable cck rate for p2p*/
		rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
				(u8 *) (&mac->basic_rates));
	}
	mac->vif = vif;
	mac->opmode = vif->type;
	rtlpriv->cfg->ops->set_network_type(hw, vif->type);
	memcpy(mac->mac_addr, vif->addr, ETH_ALEN);
	rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ETHER_ADDR, mac->mac_addr);

out:
	mutex_unlock(&rtlpriv->locks.conf_mutex);
	return err;
}