drivers/net/wireless/marvell/mwifiex/uap_event.c - vendor/opensource/backports - Git at Google

 /*
  * Marvell Wireless LAN device driver: AP event handling
  *
  * Copyright (C) 2012-2014, Marvell International Ltd.
  *
  * This software file (the "File") is distributed by Marvell International
  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
  * (the "License").  You may use, redistribute and/or modify this File in
  * accordance with the terms and conditions of the License, a copy of which
  * is available by writing to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  *
  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  * this warranty disclaimer.
  */

 #include "decl.h"
 #include "main.h"
 #include "11n.h"

 #define MWIFIEX_BSS_START_EVT_FIX_SIZE    12

 static int mwifiex_check_uap_capabilties(struct mwifiex_private *priv,
 					 struct sk_buff *event)
 {
 	int evt_len;
 	u8 *curr;
 	u16 tlv_len;
 	struct mwifiex_ie_types_data *tlv_hdr;
 	struct ieee_types_wmm_parameter *wmm_param_ie = NULL;
 	int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK;

 	priv->wmm_enabled = false;
 	skb_pull(event, MWIFIEX_BSS_START_EVT_FIX_SIZE);
 	evt_len = event->len;
 	curr = event->data;

 	mwifiex_dbg_dump(priv->adapter, EVT_D, "uap capabilties:",
 			 event->data, event->len);

 	skb_push(event, MWIFIEX_BSS_START_EVT_FIX_SIZE);

 	while ((evt_len >= sizeof(tlv_hdr->header))) {
 		tlv_hdr = (struct mwifiex_ie_types_data *)curr;
 		tlv_len = le16_to_cpu(tlv_hdr->header.len);

 		if (evt_len < tlv_len + sizeof(tlv_hdr->header))
 			break;

 		switch (le16_to_cpu(tlv_hdr->header.type)) {
 		case WLAN_EID_HT_CAPABILITY:
 			priv->ap_11n_enabled = true;
 			break;

 		case WLAN_EID_VHT_CAPABILITY:
 			priv->ap_11ac_enabled = true;
 			break;

 		case WLAN_EID_VENDOR_SPECIFIC:
 			/* Point the regular IEEE IE 2 bytes into the Marvell IE
 			 * and setup the IEEE IE type and length byte fields
 			 */
 			wmm_param_ie = (void *)(curr + 2);
 			wmm_param_ie->vend_hdr.len = (u8)tlv_len;
 			wmm_param_ie->vend_hdr.element_id =
 						WLAN_EID_VENDOR_SPECIFIC;
 			mwifiex_dbg(priv->adapter, EVENT,
 				    "info: check uap capabilities:\t"
 				    "wmm parameter set count: %d\n",
 				    wmm_param_ie->qos_info_bitmap & mask);

 			mwifiex_wmm_setup_ac_downgrade(priv);
 			priv->wmm_enabled = true;
 			mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie);
 			break;

 		default:
 			break;
 		}

 		curr += (tlv_len + sizeof(tlv_hdr->header));
 		evt_len -= (tlv_len + sizeof(tlv_hdr->header));
 	}

 	return 0;
 }

 /*
  * This function handles AP interface specific events generated by firmware.
  *
  * Event specific routines are called by this function based
  * upon the generated event cause.
  *
  *
  * Events supported for AP -
  *      - EVENT_UAP_STA_ASSOC
  *      - EVENT_UAP_STA_DEAUTH
  *      - EVENT_UAP_BSS_ACTIVE
  *      - EVENT_UAP_BSS_START
  *      - EVENT_UAP_BSS_IDLE
  *      - EVENT_UAP_MIC_COUNTERMEASURES:
  */
 int mwifiex_process_uap_event(struct mwifiex_private *priv)
 {
 	struct mwifiex_adapter *adapter = priv->adapter;
 	int len, i;
 	u32 eventcause = adapter->event_cause;
 	struct station_info sinfo;
 	struct mwifiex_assoc_event *event;
 	struct mwifiex_sta_node *node;
 	u8 *deauth_mac;
 	struct host_cmd_ds_11n_batimeout *ba_timeout;
 	u16 ctrl;

 	switch (eventcause) {
 	case EVENT_UAP_STA_ASSOC:
 		memset(&sinfo, 0, sizeof(sinfo));
 		event = (struct mwifiex_assoc_event *)
 			(adapter->event_body + MWIFIEX_UAP_EVENT_EXTRA_HEADER);
 		if (le16_to_cpu(event->type) == TLV_TYPE_UAP_MGMT_FRAME) {
 			len = -1;

 			if (ieee80211_is_assoc_req(event->frame_control))
 				len = 0;
 			else if (ieee80211_is_reassoc_req(event->frame_control))
 				/* There will be ETH_ALEN bytes of
 				 * current_ap_addr before the re-assoc ies.
 				 */
 				len = ETH_ALEN;

 			if (len != -1) {
 				sinfo.assoc_req_ies = &event->data[len];
 				len = (u8 *)sinfo.assoc_req_ies -
 				      (u8 *)&event->frame_control;
 				sinfo.assoc_req_ies_len =
 					le16_to_cpu(event->len) - (u16)len;
 			}
 		}
 		cfg80211_new_sta(priv->netdev, event->sta_addr, &sinfo,
 				 GFP_KERNEL);

 		node = mwifiex_add_sta_entry(priv, event->sta_addr);
 		if (!node) {
 			mwifiex_dbg(adapter, ERROR,
 				    "could not create station entry!\n");
 			return -1;
 		}

 		if (!priv->ap_11n_enabled)
 			break;

 		mwifiex_set_sta_ht_cap(priv, sinfo.assoc_req_ies,
 				       sinfo.assoc_req_ies_len, node);

 		for (i = 0; i < MAX_NUM_TID; i++) {
 			if (node->is_11n_enabled)
 				node->ampdu_sta[i] =
 					      priv->aggr_prio_tbl[i].ampdu_user;
 			else
 				node->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
 		}
 		memset(node->rx_seq, 0xff, sizeof(node->rx_seq));
 		break;
 	case EVENT_UAP_STA_DEAUTH:
 		deauth_mac = adapter->event_body +
 			     MWIFIEX_UAP_EVENT_EXTRA_HEADER;
 		cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL);

 		if (priv->ap_11n_enabled) {
 			mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
 			mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
 		}
 		mwifiex_wmm_del_peer_ra_list(priv, deauth_mac);
 		mwifiex_del_sta_entry(priv, deauth_mac);
 		break;
 	case EVENT_UAP_BSS_IDLE:
 		priv->media_connected = false;
 		priv->port_open = false;
 		mwifiex_clean_txrx(priv);
 		mwifiex_del_all_sta_list(priv);
 		break;
 	case EVENT_UAP_BSS_ACTIVE:
 		priv->media_connected = true;
 		priv->port_open = true;
 		break;
 	case EVENT_UAP_BSS_START:
 		mwifiex_dbg(adapter, EVENT,
 			    "AP EVENT: event id: %#x\n", eventcause);
 		priv->port_open = false;
 		memcpy(priv->netdev->dev_addr, adapter->event_body + 2,
 		       ETH_ALEN);
 		if (priv->hist_data)
 			mwifiex_hist_data_reset(priv);
 		mwifiex_check_uap_capabilties(priv, adapter->event_skb);
 		break;
 	case EVENT_UAP_MIC_COUNTERMEASURES:
 		/* For future development */
 		mwifiex_dbg(adapter, EVENT,
 			    "AP EVENT: event id: %#x\n", eventcause);
 		break;
 	case EVENT_AMSDU_AGGR_CTRL:
 		ctrl = le16_to_cpu(*(__le16 *)adapter->event_body);
 		mwifiex_dbg(adapter, EVENT,
 			    "event: AMSDU_AGGR_CTRL %d\n", ctrl);

 		if (priv->media_connected) {
 			adapter->tx_buf_size =
 				min_t(u16, adapter->curr_tx_buf_size, ctrl);
 			mwifiex_dbg(adapter, EVENT,
 				    "event: tx_buf_size %d\n",
 				    adapter->tx_buf_size);
 		}
 		break;
 	case EVENT_ADDBA:
 		mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n");
 		if (priv->media_connected)
 			mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
 					 HostCmd_ACT_GEN_SET, 0,
 					 adapter->event_body, false);
 		break;
 	case EVENT_DELBA:
 		mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n");
 		if (priv->media_connected)
 			mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
 		break;
 	case EVENT_BA_STREAM_TIEMOUT:
 		mwifiex_dbg(adapter, EVENT, "event:  BA Stream timeout\n");
 		if (priv->media_connected) {
 			ba_timeout = (void *)adapter->event_body;
 			mwifiex_11n_ba_stream_timeout(priv, ba_timeout);
 		}
 		break;
 	case EVENT_EXT_SCAN_REPORT:
 		mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n");
 		if (adapter->ext_scan)
 			return mwifiex_handle_event_ext_scan_report(priv,
 						adapter->event_skb->data);
 		break;
 	case EVENT_TX_STATUS_REPORT:
 		mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n");
 		mwifiex_parse_tx_status_event(priv, adapter->event_body);
 		break;
 	case EVENT_PS_SLEEP:
 		mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n");

 		adapter->ps_state = PS_STATE_PRE_SLEEP;

 		mwifiex_check_ps_cond(adapter);
 		break;

 	case EVENT_PS_AWAKE:
 		mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n");
 		if (!adapter->pps_uapsd_mode &&
 		    priv->media_connected && adapter->sleep_period.period) {
 				adapter->pps_uapsd_mode = true;
 				mwifiex_dbg(adapter, EVENT,
 					    "event: PPS/UAPSD mode activated\n");
 		}
 		adapter->tx_lock_flag = false;
 		if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
 			if (mwifiex_check_last_packet_indication(priv)) {
 				if (adapter->data_sent ||
 				    (adapter->if_ops.is_port_ready &&
 				     !adapter->if_ops.is_port_ready(priv))) {
 					adapter->ps_state = PS_STATE_AWAKE;
 					adapter->pm_wakeup_card_req = false;
 					adapter->pm_wakeup_fw_try = false;
 					break;
 				}
 				if (!mwifiex_send_null_packet
 					(priv,
 					 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
 					 MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
 						adapter->ps_state =
 							PS_STATE_SLEEP;
 					return 0;
 			}
 		}
 		adapter->ps_state = PS_STATE_AWAKE;
 		adapter->pm_wakeup_card_req = false;
 		adapter->pm_wakeup_fw_try = false;
 		break;

 	case EVENT_CHANNEL_REPORT_RDY:
 		mwifiex_dbg(adapter, EVENT, "event: Channel Report\n");
 		mwifiex_11h_handle_chanrpt_ready(priv, adapter->event_skb);
 		break;
 	case EVENT_RADAR_DETECTED:
 		mwifiex_dbg(adapter, EVENT, "event: Radar detected\n");
 		mwifiex_11h_handle_radar_detected(priv, adapter->event_skb);
 		break;
 	case EVENT_BT_COEX_WLAN_PARA_CHANGE:
 		dev_err(adapter->dev, "EVENT: BT coex wlan param update\n");
 		mwifiex_bt_coex_wlan_param_update_event(priv,
 							adapter->event_skb);
 		break;
 	case EVENT_TX_DATA_PAUSE:
 		mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n");
 		mwifiex_process_tx_pause_event(priv, adapter->event_skb);
 		break;

 	case EVENT_MULTI_CHAN_INFO:
 		mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n");
 		mwifiex_process_multi_chan_event(priv, adapter->event_skb);
 		break;

 	default:
 		mwifiex_dbg(adapter, EVENT,
 			    "event: unknown event id: %#x\n", eventcause);
 		break;
 	}

 	return 0;
 }

 /* This function deletes station entry from associated station list.
  * Also if both AP and STA are 11n enabled, RxReorder tables and TxBA stream
  * tables created for this station are deleted.
  */
 void mwifiex_uap_del_sta_data(struct mwifiex_private *priv,
 			      struct mwifiex_sta_node *node)
 {
 	if (priv->ap_11n_enabled && node->is_11n_enabled) {
 		mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, node->mac_addr);
 		mwifiex_del_tx_ba_stream_tbl_by_ra(priv, node->mac_addr);
 	}
 	mwifiex_del_sta_entry(priv, node->mac_addr);

 	return;
 }
	/*
	* Marvell Wireless LAN device driver: AP event handling
	*
	* Copyright (C) 2012-2014, Marvell International Ltd.
	*
	* This software file (the "File") is distributed by Marvell International
	* Ltd. under the terms of the GNU General Public License Version 2, June 1991
	* (the "License"). You may use, redistribute and/or modify this File in
	* accordance with the terms and conditions of the License, a copy of which
	* is available by writing to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
	* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
	*
	* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
	* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
	* this warranty disclaimer.
	*/

	#include "decl.h"
	#include "main.h"
	#include "11n.h"

	#define MWIFIEX_BSS_START_EVT_FIX_SIZE 12

	static int mwifiex_check_uap_capabilties(struct mwifiex_private *priv,
	struct sk_buff *event)
	{
	int evt_len;
	u8 *curr;
	u16 tlv_len;
	struct mwifiex_ie_types_data *tlv_hdr;
	struct ieee_types_wmm_parameter *wmm_param_ie = NULL;
	int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK;

	priv->wmm_enabled = false;
	skb_pull(event, MWIFIEX_BSS_START_EVT_FIX_SIZE);
	evt_len = event->len;
	curr = event->data;

	mwifiex_dbg_dump(priv->adapter, EVT_D, "uap capabilties:",
	event->data, event->len);

	skb_push(event, MWIFIEX_BSS_START_EVT_FIX_SIZE);

	while ((evt_len >= sizeof(tlv_hdr->header))) {
	tlv_hdr = (struct mwifiex_ie_types_data *)curr;
	tlv_len = le16_to_cpu(tlv_hdr->header.len);

	if (evt_len < tlv_len + sizeof(tlv_hdr->header))
	break;

	switch (le16_to_cpu(tlv_hdr->header.type)) {
	case WLAN_EID_HT_CAPABILITY:
	priv->ap_11n_enabled = true;
	break;

	case WLAN_EID_VHT_CAPABILITY:
	priv->ap_11ac_enabled = true;
	break;

	case WLAN_EID_VENDOR_SPECIFIC:
	/* Point the regular IEEE IE 2 bytes into the Marvell IE
	* and setup the IEEE IE type and length byte fields
	*/
	wmm_param_ie = (void *)(curr + 2);
	wmm_param_ie->vend_hdr.len = (u8)tlv_len;
	wmm_param_ie->vend_hdr.element_id =
	WLAN_EID_VENDOR_SPECIFIC;
	mwifiex_dbg(priv->adapter, EVENT,
	"info: check uap capabilities:\t"
	"wmm parameter set count: %d\n",
	wmm_param_ie->qos_info_bitmap & mask);

	mwifiex_wmm_setup_ac_downgrade(priv);
	priv->wmm_enabled = true;
	mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie);
	break;

	default:
	break;
	}

	curr += (tlv_len + sizeof(tlv_hdr->header));
	evt_len -= (tlv_len + sizeof(tlv_hdr->header));
	}

	return 0;
	}

	/*
	* This function handles AP interface specific events generated by firmware.
	*
	* Event specific routines are called by this function based
	* upon the generated event cause.
	*
	*
	* Events supported for AP -
	* - EVENT_UAP_STA_ASSOC
	* - EVENT_UAP_STA_DEAUTH
	* - EVENT_UAP_BSS_ACTIVE
	* - EVENT_UAP_BSS_START
	* - EVENT_UAP_BSS_IDLE
	* - EVENT_UAP_MIC_COUNTERMEASURES:
	*/
	int mwifiex_process_uap_event(struct mwifiex_private *priv)
	{
	struct mwifiex_adapter *adapter = priv->adapter;
	int len, i;
	u32 eventcause = adapter->event_cause;
	struct station_info sinfo;
	struct mwifiex_assoc_event *event;
	struct mwifiex_sta_node *node;
	u8 *deauth_mac;
	struct host_cmd_ds_11n_batimeout *ba_timeout;
	u16 ctrl;

	switch (eventcause) {
	case EVENT_UAP_STA_ASSOC:
	memset(&sinfo, 0, sizeof(sinfo));
	event = (struct mwifiex_assoc_event *)
	(adapter->event_body + MWIFIEX_UAP_EVENT_EXTRA_HEADER);
	if (le16_to_cpu(event->type) == TLV_TYPE_UAP_MGMT_FRAME) {
	len = -1;

	if (ieee80211_is_assoc_req(event->frame_control))
	len = 0;
	else if (ieee80211_is_reassoc_req(event->frame_control))
	/* There will be ETH_ALEN bytes of
	* current_ap_addr before the re-assoc ies.
	*/
	len = ETH_ALEN;

	if (len != -1) {
	sinfo.assoc_req_ies = &event->data[len];
	len = (u8 *)sinfo.assoc_req_ies -
	(u8 *)&event->frame_control;
	sinfo.assoc_req_ies_len =
	le16_to_cpu(event->len) - (u16)len;
	}
	}
	cfg80211_new_sta(priv->netdev, event->sta_addr, &sinfo,
	GFP_KERNEL);

	node = mwifiex_add_sta_entry(priv, event->sta_addr);
	if (!node) {
	mwifiex_dbg(adapter, ERROR,
	"could not create station entry!\n");
	return -1;
	}

	if (!priv->ap_11n_enabled)
	break;

	mwifiex_set_sta_ht_cap(priv, sinfo.assoc_req_ies,
	sinfo.assoc_req_ies_len, node);

	for (i = 0; i < MAX_NUM_TID; i++) {
	if (node->is_11n_enabled)
	node->ampdu_sta[i] =
	priv->aggr_prio_tbl[i].ampdu_user;
	else
	node->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
	}
	memset(node->rx_seq, 0xff, sizeof(node->rx_seq));
	break;
	case EVENT_UAP_STA_DEAUTH:
	deauth_mac = adapter->event_body +
	MWIFIEX_UAP_EVENT_EXTRA_HEADER;
	cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL);

	if (priv->ap_11n_enabled) {
	mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
	mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
	}
	mwifiex_wmm_del_peer_ra_list(priv, deauth_mac);
	mwifiex_del_sta_entry(priv, deauth_mac);
	break;
	case EVENT_UAP_BSS_IDLE:
	priv->media_connected = false;
	priv->port_open = false;
	mwifiex_clean_txrx(priv);
	mwifiex_del_all_sta_list(priv);
	break;
	case EVENT_UAP_BSS_ACTIVE:
	priv->media_connected = true;
	priv->port_open = true;
	break;
	case EVENT_UAP_BSS_START:
	mwifiex_dbg(adapter, EVENT,
	"AP EVENT: event id: %#x\n", eventcause);
	priv->port_open = false;
	memcpy(priv->netdev->dev_addr, adapter->event_body + 2,
	ETH_ALEN);
	if (priv->hist_data)
	mwifiex_hist_data_reset(priv);
	mwifiex_check_uap_capabilties(priv, adapter->event_skb);
	break;
	case EVENT_UAP_MIC_COUNTERMEASURES:
	/* For future development */
	mwifiex_dbg(adapter, EVENT,
	"AP EVENT: event id: %#x\n", eventcause);
	break;
	case EVENT_AMSDU_AGGR_CTRL:
	ctrl = le16_to_cpu((__le16 )adapter->event_body);
	mwifiex_dbg(adapter, EVENT,
	"event: AMSDU_AGGR_CTRL %d\n", ctrl);

	if (priv->media_connected) {
	adapter->tx_buf_size =
	min_t(u16, adapter->curr_tx_buf_size, ctrl);
	mwifiex_dbg(adapter, EVENT,
	"event: tx_buf_size %d\n",
	adapter->tx_buf_size);
	}
	break;
	case EVENT_ADDBA:
	mwifiex_dbg(adapter, EVENT, "event: ADDBA Request\n");
	if (priv->media_connected)
	mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
	HostCmd_ACT_GEN_SET, 0,
	adapter->event_body, false);
	break;
	case EVENT_DELBA:
	mwifiex_dbg(adapter, EVENT, "event: DELBA Request\n");
	if (priv->media_connected)
	mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
	break;
	case EVENT_BA_STREAM_TIEMOUT:
	mwifiex_dbg(adapter, EVENT, "event: BA Stream timeout\n");
	if (priv->media_connected) {
	ba_timeout = (void *)adapter->event_body;
	mwifiex_11n_ba_stream_timeout(priv, ba_timeout);
	}
	break;
	case EVENT_EXT_SCAN_REPORT:
	mwifiex_dbg(adapter, EVENT, "event: EXT_SCAN Report\n");
	if (adapter->ext_scan)
	return mwifiex_handle_event_ext_scan_report(priv,
	adapter->event_skb->data);
	break;
	case EVENT_TX_STATUS_REPORT:
	mwifiex_dbg(adapter, EVENT, "event: TX_STATUS Report\n");
	mwifiex_parse_tx_status_event(priv, adapter->event_body);
	break;
	case EVENT_PS_SLEEP:
	mwifiex_dbg(adapter, EVENT, "info: EVENT: SLEEP\n");

	adapter->ps_state = PS_STATE_PRE_SLEEP;

	mwifiex_check_ps_cond(adapter);
	break;

	case EVENT_PS_AWAKE:
	mwifiex_dbg(adapter, EVENT, "info: EVENT: AWAKE\n");
	if (!adapter->pps_uapsd_mode &&
	priv->media_connected && adapter->sleep_period.period) {
	adapter->pps_uapsd_mode = true;
	mwifiex_dbg(adapter, EVENT,
	"event: PPS/UAPSD mode activated\n");
	}
	adapter->tx_lock_flag = false;
	if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
	if (mwifiex_check_last_packet_indication(priv)) {
	if (adapter->data_sent \|\|
	(adapter->if_ops.is_port_ready &&
	!adapter->if_ops.is_port_ready(priv))) {
	adapter->ps_state = PS_STATE_AWAKE;
	adapter->pm_wakeup_card_req = false;
	adapter->pm_wakeup_fw_try = false;
	break;
	}
	if (!mwifiex_send_null_packet
	(priv,
	MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET \|
	MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
	adapter->ps_state =
	PS_STATE_SLEEP;
	return 0;
	}
	}
	adapter->ps_state = PS_STATE_AWAKE;
	adapter->pm_wakeup_card_req = false;
	adapter->pm_wakeup_fw_try = false;
	break;

	case EVENT_CHANNEL_REPORT_RDY:
	mwifiex_dbg(adapter, EVENT, "event: Channel Report\n");
	mwifiex_11h_handle_chanrpt_ready(priv, adapter->event_skb);
	break;
	case EVENT_RADAR_DETECTED:
	mwifiex_dbg(adapter, EVENT, "event: Radar detected\n");
	mwifiex_11h_handle_radar_detected(priv, adapter->event_skb);
	break;
	case EVENT_BT_COEX_WLAN_PARA_CHANGE:
	dev_err(adapter->dev, "EVENT: BT coex wlan param update\n");
	mwifiex_bt_coex_wlan_param_update_event(priv,
	adapter->event_skb);
	break;
	case EVENT_TX_DATA_PAUSE:
	mwifiex_dbg(adapter, EVENT, "event: TX DATA PAUSE\n");
	mwifiex_process_tx_pause_event(priv, adapter->event_skb);
	break;

	case EVENT_MULTI_CHAN_INFO:
	mwifiex_dbg(adapter, EVENT, "event: multi-chan info\n");
	mwifiex_process_multi_chan_event(priv, adapter->event_skb);
	break;

	default:
	mwifiex_dbg(adapter, EVENT,
	"event: unknown event id: %#x\n", eventcause);
	break;
	}

	return 0;
	}

	/* This function deletes station entry from associated station list.
	* Also if both AP and STA are 11n enabled, RxReorder tables and TxBA stream
	* tables created for this station are deleted.
	*/
	void mwifiex_uap_del_sta_data(struct mwifiex_private *priv,
	struct mwifiex_sta_node *node)
	{
	if (priv->ap_11n_enabled && node->is_11n_enabled) {
	mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, node->mac_addr);
	mwifiex_del_tx_ba_stream_tbl_by_ra(priv, node->mac_addr);
	}
	mwifiex_del_sta_entry(priv, node->mac_addr);

	return;
	}