[deliverable/linux.git] / drivers / net / wireless / mwifiex / sta_event.c

/*
 * Marvell Wireless LAN device driver: station event handling
 *
 * Copyright (C) 2011-2014, 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 "ioctl.h"
#include "util.h"
#include "fw.h"
#include "main.h"
#include "wmm.h"
#include "11n.h"

/*
 * This function resets the connection state.
 *
 * The function is invoked after receiving a disconnect event from firmware,
 * and performs the following actions -
 *      - Set media status to disconnected
 *      - Clean up Tx and Rx packets
 *      - Resets SNR/NF/RSSI value in driver
 *      - Resets security configurations in driver
 *      - Enables auto data rate
 *      - Saves the previous SSID and BSSID so that they can
 *        be used for re-association, if required
 *      - Erases current SSID and BSSID information
 *      - Sends a disconnect event to upper layers/applications.
 */
void
mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code)
{
	struct mwifiex_adapter *adapter = priv->adapter;

	if (!priv->media_connected)
		return;

	dev_dbg(adapter->dev, "info: handles disconnect event\n");

	priv->media_connected = false;

	priv->scan_block = false;

	if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
	    ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) {
		mwifiex_disable_all_tdls_links(priv);

		if (priv->adapter->auto_tdls)
			mwifiex_clean_auto_tdls(priv);
	}

	/* Free Tx and Rx packets, report disconnect to upper layer */
	mwifiex_clean_txrx(priv);

	/* Reset SNR/NF/RSSI values */
	priv->data_rssi_last = 0;
	priv->data_nf_last = 0;
	priv->data_rssi_avg = 0;
	priv->data_nf_avg = 0;
	priv->bcn_rssi_last = 0;
	priv->bcn_nf_last = 0;
	priv->bcn_rssi_avg = 0;
	priv->bcn_nf_avg = 0;
	priv->rxpd_rate = 0;
	priv->rxpd_htinfo = 0;
	priv->sec_info.wpa_enabled = false;
	priv->sec_info.wpa2_enabled = false;
	priv->wpa_ie_len = 0;

	priv->sec_info.wapi_enabled = false;
	priv->wapi_ie_len = 0;
	priv->sec_info.wapi_key_on = false;

	priv->sec_info.encryption_mode = 0;

	/* Enable auto data rate */
	priv->is_data_rate_auto = true;
	priv->data_rate = 0;

	if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
	     GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && priv->hist_data)
		mwifiex_hist_data_reset(priv);

	if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
		priv->adhoc_state = ADHOC_IDLE;
		priv->adhoc_is_link_sensed = false;
	}

	/*
	 * Memorize the previous SSID and BSSID so
	 * it could be used for re-assoc
	 */

	dev_dbg(adapter->dev, "info: previous SSID=%s, SSID len=%u\n",
		priv->prev_ssid.ssid, priv->prev_ssid.ssid_len);

	dev_dbg(adapter->dev, "info: current SSID=%s, SSID len=%u\n",
		priv->curr_bss_params.bss_descriptor.ssid.ssid,
		priv->curr_bss_params.bss_descriptor.ssid.ssid_len);

	memcpy(&priv->prev_ssid,
	       &priv->curr_bss_params.bss_descriptor.ssid,
	       sizeof(struct cfg80211_ssid));

	memcpy(priv->prev_bssid,
	       priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN);

	/* Need to erase the current SSID and BSSID info */
	memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params));

	adapter->tx_lock_flag = false;
	adapter->pps_uapsd_mode = false;

	if (adapter->is_cmd_timedout && adapter->curr_cmd)
		return;
	priv->media_connected = false;
	dev_dbg(adapter->dev,
		"info: successfully disconnected from %pM: reason code %d\n",
		priv->cfg_bssid, reason_code);
	if (priv->bss_mode == NL80211_IFTYPE_STATION ||
	    priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
		cfg80211_disconnected(priv->netdev, reason_code, NULL, 0,
				      GFP_KERNEL);
	}
	eth_zero_addr(priv->cfg_bssid);

	mwifiex_stop_net_dev_queue(priv->netdev, adapter);
	if (netif_carrier_ok(priv->netdev))
		netif_carrier_off(priv->netdev);
}

static int mwifiex_parse_tdls_event(struct mwifiex_private *priv,
				    struct sk_buff *event_skb)
{
	int ret = 0;
	struct mwifiex_adapter *adapter = priv->adapter;
	struct mwifiex_sta_node *sta_ptr;
	struct mwifiex_tdls_generic_event *tdls_evt =
			(void *)event_skb->data + sizeof(adapter->event_cause);

	/* reserved 2 bytes are not mandatory in tdls event */
	if (event_skb->len < (sizeof(struct mwifiex_tdls_generic_event) -
			      sizeof(u16) - sizeof(adapter->event_cause))) {
		dev_err(adapter->dev, "Invalid event length!\n");
		return -1;
	}

	sta_ptr = mwifiex_get_sta_entry(priv, tdls_evt->peer_mac);
	if (!sta_ptr) {
		dev_err(adapter->dev, "cannot get sta entry!\n");
		return -1;
	}

	switch (le16_to_cpu(tdls_evt->type)) {
	case TDLS_EVENT_LINK_TEAR_DOWN:
		cfg80211_tdls_oper_request(priv->netdev,
					   tdls_evt->peer_mac,
					   NL80211_TDLS_TEARDOWN,
					   le16_to_cpu(tdls_evt->u.reason_code),
					   GFP_KERNEL);
		break;
	default:
		break;
	}

	return ret;
}

/*
 * This function handles events generated by firmware.
 *
 * This is a generic function and handles all events.
 *
 * Event specific routines are called by this function based
 * upon the generated event cause.
 *
 * For the following events, the function just forwards them to upper
 * layers, optionally recording the change -
 *      - EVENT_LINK_SENSED
 *      - EVENT_MIC_ERR_UNICAST
 *      - EVENT_MIC_ERR_MULTICAST
 *      - EVENT_PORT_RELEASE
 *      - EVENT_RSSI_LOW
 *      - EVENT_SNR_LOW
 *      - EVENT_MAX_FAIL
 *      - EVENT_RSSI_HIGH
 *      - EVENT_SNR_HIGH
 *      - EVENT_DATA_RSSI_LOW
 *      - EVENT_DATA_SNR_LOW
 *      - EVENT_DATA_RSSI_HIGH
 *      - EVENT_DATA_SNR_HIGH
 *      - EVENT_LINK_QUALITY
 *      - EVENT_PRE_BEACON_LOST
 *      - EVENT_IBSS_COALESCED
 *      - EVENT_WEP_ICV_ERR
 *      - EVENT_BW_CHANGE
 *      - EVENT_HOSTWAKE_STAIE
  *
 * For the following events, no action is taken -
 *      - EVENT_MIB_CHANGED
 *      - EVENT_INIT_DONE
 *      - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
 *
 * Rest of the supported events requires driver handling -
 *      - EVENT_DEAUTHENTICATED
 *      - EVENT_DISASSOCIATED
 *      - EVENT_LINK_LOST
 *      - EVENT_PS_SLEEP
 *      - EVENT_PS_AWAKE
 *      - EVENT_DEEP_SLEEP_AWAKE
 *      - EVENT_HS_ACT_REQ
 *      - EVENT_ADHOC_BCN_LOST
 *      - EVENT_BG_SCAN_REPORT
 *      - EVENT_WMM_STATUS_CHANGE
 *      - EVENT_ADDBA
 *      - EVENT_DELBA
 *      - EVENT_BA_STREAM_TIEMOUT
 *      - EVENT_AMSDU_AGGR_CTRL
 */
int mwifiex_process_sta_event(struct mwifiex_private *priv)
{
	struct mwifiex_adapter *adapter = priv->adapter;
	int ret = 0;
	u32 eventcause = adapter->event_cause;
	u16 ctrl, reason_code;

	switch (eventcause) {
	case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
		dev_err(adapter->dev,
			"invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
		break;
	case EVENT_LINK_SENSED:
		dev_dbg(adapter->dev, "event: LINK_SENSED\n");
		if (!netif_carrier_ok(priv->netdev))
			netif_carrier_on(priv->netdev);
		mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
		break;

	case EVENT_DEAUTHENTICATED:
		dev_dbg(adapter->dev, "event: Deauthenticated\n");
		if (priv->wps.session_enable) {
			dev_dbg(adapter->dev,
				"info: receive deauth event in wps session\n");
			break;
		}
		adapter->dbg.num_event_deauth++;
		if (priv->media_connected) {
			reason_code =
				le16_to_cpu(*(__le16 *)adapter->event_body);
			mwifiex_reset_connect_state(priv, reason_code);
		}
		break;

	case EVENT_DISASSOCIATED:
		dev_dbg(adapter->dev, "event: Disassociated\n");
		if (priv->wps.session_enable) {
			dev_dbg(adapter->dev,
				"info: receive disassoc event in wps session\n");
			break;
		}
		adapter->dbg.num_event_disassoc++;
		if (priv->media_connected) {
			reason_code =
				le16_to_cpu(*(__le16 *)adapter->event_body);
			mwifiex_reset_connect_state(priv, reason_code);
		}
		break;

	case EVENT_LINK_LOST:
		dev_dbg(adapter->dev, "event: Link lost\n");
		adapter->dbg.num_event_link_lost++;
		if (priv->media_connected) {
			reason_code =
				le16_to_cpu(*(__le16 *)adapter->event_body);
			mwifiex_reset_connect_state(priv, reason_code);
		}
		break;

	case EVENT_PS_SLEEP:
		dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");

		adapter->ps_state = PS_STATE_PRE_SLEEP;

		mwifiex_check_ps_cond(adapter);
		break;

	case EVENT_PS_AWAKE:
		dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
		if (!adapter->pps_uapsd_mode &&
		    priv->media_connected && adapter->sleep_period.period) {
				adapter->pps_uapsd_mode = true;
				dev_dbg(adapter->dev,
					"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->ps_state = PS_STATE_AWAKE;
					adapter->pm_wakeup_card_req = false;
					adapter->pm_wakeup_fw_try = false;
					del_timer(&adapter->wakeup_timer);
					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;
		del_timer(&adapter->wakeup_timer);

		break;

	case EVENT_DEEP_SLEEP_AWAKE:
		adapter->if_ops.wakeup_complete(adapter);
		dev_dbg(adapter->dev, "event: DS_AWAKE\n");
		if (adapter->is_deep_sleep)
			adapter->is_deep_sleep = false;
		break;

	case EVENT_HS_ACT_REQ:
		dev_dbg(adapter->dev, "event: HS_ACT_REQ\n");
		ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH,
				       0, 0, NULL, false);
		break;

	case EVENT_MIC_ERR_UNICAST:
		dev_dbg(adapter->dev, "event: UNICAST MIC ERROR\n");
		cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
					     NL80211_KEYTYPE_PAIRWISE,
					     -1, NULL, GFP_KERNEL);
		break;

	case EVENT_MIC_ERR_MULTICAST:
		dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n");
		cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
					     NL80211_KEYTYPE_GROUP,
					     -1, NULL, GFP_KERNEL);
		break;
	case EVENT_MIB_CHANGED:
	case EVENT_INIT_DONE:
		break;

	case EVENT_ADHOC_BCN_LOST:
		dev_dbg(adapter->dev, "event: ADHOC_BCN_LOST\n");
		priv->adhoc_is_link_sensed = false;
		mwifiex_clean_txrx(priv);
		mwifiex_stop_net_dev_queue(priv->netdev, adapter);
		if (netif_carrier_ok(priv->netdev))
			netif_carrier_off(priv->netdev);
		break;

	case EVENT_BG_SCAN_REPORT:
		dev_dbg(adapter->dev, "event: BGS_REPORT\n");
		ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY,
				       HostCmd_ACT_GEN_GET, 0, NULL, false);
		break;

	case EVENT_PORT_RELEASE:
		dev_dbg(adapter->dev, "event: PORT RELEASE\n");
		break;

	case EVENT_EXT_SCAN_REPORT:
		dev_dbg(adapter->dev, "event: EXT_SCAN Report\n");
		if (adapter->ext_scan)
			ret = mwifiex_handle_event_ext_scan_report(priv,
						adapter->event_skb->data);

		break;

	case EVENT_WMM_STATUS_CHANGE:
		dev_dbg(adapter->dev, "event: WMM status changed\n");
		ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS,
				       0, 0, NULL, false);
		break;

	case EVENT_RSSI_LOW:
		cfg80211_cqm_rssi_notify(priv->netdev,
					 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
					 GFP_KERNEL);
		mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
				 HostCmd_ACT_GEN_GET, 0, NULL, false);
		priv->subsc_evt_rssi_state = RSSI_LOW_RECVD;
		dev_dbg(adapter->dev, "event: Beacon RSSI_LOW\n");
		break;
	case EVENT_SNR_LOW:
		dev_dbg(adapter->dev, "event: Beacon SNR_LOW\n");
		break;
	case EVENT_MAX_FAIL:
		dev_dbg(adapter->dev, "event: MAX_FAIL\n");
		break;
	case EVENT_RSSI_HIGH:
		cfg80211_cqm_rssi_notify(priv->netdev,
					 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
					 GFP_KERNEL);
		mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
				 HostCmd_ACT_GEN_GET, 0, NULL, false);
		priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD;
		dev_dbg(adapter->dev, "event: Beacon RSSI_HIGH\n");
		break;
	case EVENT_SNR_HIGH:
		dev_dbg(adapter->dev, "event: Beacon SNR_HIGH\n");
		break;
	case EVENT_DATA_RSSI_LOW:
		dev_dbg(adapter->dev, "event: Data RSSI_LOW\n");
		break;
	case EVENT_DATA_SNR_LOW:
		dev_dbg(adapter->dev, "event: Data SNR_LOW\n");
		break;
	case EVENT_DATA_RSSI_HIGH:
		dev_dbg(adapter->dev, "event: Data RSSI_HIGH\n");
		break;
	case EVENT_DATA_SNR_HIGH:
		dev_dbg(adapter->dev, "event: Data SNR_HIGH\n");
		break;
	case EVENT_LINK_QUALITY:
		dev_dbg(adapter->dev, "event: Link Quality\n");
		break;
	case EVENT_PRE_BEACON_LOST:
		dev_dbg(adapter->dev, "event: Pre-Beacon Lost\n");
		break;
	case EVENT_IBSS_COALESCED:
		dev_dbg(adapter->dev, "event: IBSS_COALESCED\n");
		ret = mwifiex_send_cmd(priv,
				HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
				HostCmd_ACT_GEN_GET, 0, NULL, false);
		break;
	case EVENT_ADDBA:
		dev_dbg(adapter->dev, "event: ADDBA Request\n");
		mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
				 HostCmd_ACT_GEN_SET, 0,
				 adapter->event_body, false);
		break;
	case EVENT_DELBA:
		dev_dbg(adapter->dev, "event: DELBA Request\n");
		mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
		break;
	case EVENT_BA_STREAM_TIEMOUT:
		dev_dbg(adapter->dev, "event:  BA Stream timeout\n");
		mwifiex_11n_ba_stream_timeout(priv,
					      (struct host_cmd_ds_11n_batimeout
					       *)
					      adapter->event_body);
		break;
	case EVENT_AMSDU_AGGR_CTRL:
		ctrl = le16_to_cpu(*(__le16 *)adapter->event_body);
		dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl);

		adapter->tx_buf_size =
				min_t(u16, adapter->curr_tx_buf_size, ctrl);
		dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
			adapter->tx_buf_size);
		break;

	case EVENT_WEP_ICV_ERR:
		dev_dbg(adapter->dev, "event: WEP ICV error\n");
		break;

	case EVENT_BW_CHANGE:
		dev_dbg(adapter->dev, "event: BW Change\n");
		break;

	case EVENT_HOSTWAKE_STAIE:
		dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause);
		break;

	case EVENT_REMAIN_ON_CHAN_EXPIRED:
		dev_dbg(adapter->dev, "event: Remain on channel expired\n");
		cfg80211_remain_on_channel_expired(&priv->wdev,
						   priv->roc_cfg.cookie,
						   &priv->roc_cfg.chan,
						   GFP_ATOMIC);

		memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg));

		break;

	case EVENT_CHANNEL_SWITCH_ANN:
		dev_dbg(adapter->dev, "event: Channel Switch Announcement\n");
		priv->csa_expire_time =
				jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME);
		priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel;
		ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
			HostCmd_ACT_GEN_SET, 0,
			priv->curr_bss_params.bss_descriptor.mac_address,
			false);
		break;

	case EVENT_TDLS_GENERIC_EVENT:
		ret = mwifiex_parse_tdls_event(priv, adapter->event_skb);
		break;

	case EVENT_TX_STATUS_REPORT:
		dev_dbg(adapter->dev, "event: TX_STATUS Report\n");
		mwifiex_parse_tx_status_event(priv, adapter->event_body);
		break;

	case EVENT_CHANNEL_REPORT_RDY:
		dev_dbg(adapter->dev, "event: Channel Report\n");
		ret = mwifiex_11h_handle_chanrpt_ready(priv,
						       adapter->event_skb);
		break;
	case EVENT_RADAR_DETECTED:
		dev_dbg(adapter->dev, "event: Radar detected\n");
		ret = mwifiex_11h_handle_radar_detected(priv,
							adapter->event_skb);
		break;
	default:
		dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
			eventcause);
		break;
	}

	return ret;
}
Commit	Line	Data
5e6e3a92 BZ	1	/*
	2	* Marvell Wireless LAN device driver: station event handling
	3	*
65da33f5	4	* Copyright (C) 2011-2014, Marvell International Ltd.
5e6e3a92 BZ	5	*
	6	* This software file (the "File") is distributed by Marvell International
	7	* Ltd. under the terms of the GNU General Public License Version 2, June 1991
	8	* (the "License"). You may use, redistribute and/or modify this File in
	9	* accordance with the terms and conditions of the License, a copy of which
	10	* is available by writing to the Free Software Foundation, Inc.,
	11	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
	12	* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
	13	*
	14	* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
	15	* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
	16	* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
	17	* this warranty disclaimer.
	18	*/
	19
	20	#include "decl.h"
	21	#include "ioctl.h"
	22	#include "util.h"
	23	#include "fw.h"
	24	#include "main.h"
	25	#include "wmm.h"
	26	#include "11n.h"
	27
	28	/*
	29	* This function resets the connection state.
	30	*
	31	* The function is invoked after receiving a disconnect event from firmware,
	32	* and performs the following actions -
	33	* - Set media status to disconnected
	34	* - Clean up Tx and Rx packets
	35	* - Resets SNR/NF/RSSI value in driver
	36	* - Resets security configurations in driver
	37	* - Enables auto data rate
	38	* - Saves the previous SSID and BSSID so that they can
	39	* be used for re-association, if required
	40	* - Erases current SSID and BSSID information
	41	* - Sends a disconnect event to upper layers/applications.
	42	*/
	43	void
8cc1d523	44	mwifiex_reset_connect_state(struct mwifiex_private *priv, u16 reason_code)
5e6e3a92 BZ	45	{
	46	struct mwifiex_adapter *adapter = priv->adapter;
	47
	48	if (!priv->media_connected)
	49	return;
	50
	51	dev_dbg(adapter->dev, "info: handles disconnect event\n");
	52
	53	priv->media_connected = false;
	54
	55	priv->scan_block = false;
	56
be104b91	57	if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
9927baa3	58	ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) {
be104b91 AP	59	mwifiex_disable_all_tdls_links(priv);
be104b91 AP	60
9927baa3 AP	61	if (priv->adapter->auto_tdls)
	62	mwifiex_clean_auto_tdls(priv);
	63	}
	64
5e6e3a92 BZ	65	/* Free Tx and Rx packets, report disconnect to upper layer */
	66	mwifiex_clean_txrx(priv);
	67
	68	/* Reset SNR/NF/RSSI values */
	69	priv->data_rssi_last = 0;
	70	priv->data_nf_last = 0;
	71	priv->data_rssi_avg = 0;
	72	priv->data_nf_avg = 0;
	73	priv->bcn_rssi_last = 0;
	74	priv->bcn_nf_last = 0;
	75	priv->bcn_rssi_avg = 0;
	76	priv->bcn_nf_avg = 0;
	77	priv->rxpd_rate = 0;
	78	priv->rxpd_htinfo = 0;
	79	priv->sec_info.wpa_enabled = false;
	80	priv->sec_info.wpa2_enabled = false;
	81	priv->wpa_ie_len = 0;
	82
	83	priv->sec_info.wapi_enabled = false;
	84	priv->wapi_ie_len = 0;
	85	priv->sec_info.wapi_key_on = false;
	86
2be50b8d	87	priv->sec_info.encryption_mode = 0;
5e6e3a92 BZ	88
	89	/* Enable auto data rate */
	90	priv->is_data_rate_auto = true;
	91	priv->data_rate = 0;
	92
cbf6e055 XH	93	if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA \|\|
	94	GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) && priv->hist_data)
	95	mwifiex_hist_data_reset(priv);
	96
eecd8250	97	if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
5e6e3a92 BZ	98	priv->adhoc_state = ADHOC_IDLE;
	99	priv->adhoc_is_link_sensed = false;
	100	}
	101
	102	/*
	103	* Memorize the previous SSID and BSSID so
	104	* it could be used for re-assoc
	105	*/
	106
	107	dev_dbg(adapter->dev, "info: previous SSID=%s, SSID len=%u\n",
500f747c	108	priv->prev_ssid.ssid, priv->prev_ssid.ssid_len);
5e6e3a92 BZ	109
5e6e3a92 BZ	110	dev_dbg(adapter->dev, "info: current SSID=%s, SSID len=%u\n",
500f747c YAP	111	priv->curr_bss_params.bss_descriptor.ssid.ssid,
500f747c YAP	112	priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
5e6e3a92 BZ	113
	114	memcpy(&priv->prev_ssid,
	115	&priv->curr_bss_params.bss_descriptor.ssid,
b9be5f39	116	sizeof(struct cfg80211_ssid));
5e6e3a92 BZ	117
	118	memcpy(priv->prev_bssid,
	119	priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN);
	120
	121	/* Need to erase the current SSID and BSSID info */
	122	memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params));
	123
	124	adapter->tx_lock_flag = false;
	125	adapter->pps_uapsd_mode = false;
	126
0c9c4a09	127	if (adapter->is_cmd_timedout && adapter->curr_cmd)
5e6e3a92 BZ	128	return;
5e6e3a92 BZ	129	priv->media_connected = false;
500f747c YAP	130	dev_dbg(adapter->dev,
500f747c YAP	131	"info: successfully disconnected from %pM: reason code %d\n",
8cc1d523	132	priv->cfg_bssid, reason_code);
9612bd1e AP	133	if (priv->bss_mode == NL80211_IFTYPE_STATION \|\|
9612bd1e AP	134	priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
8cc1d523 AK	135	cfg80211_disconnected(priv->netdev, reason_code, NULL, 0,
8cc1d523 AK	136	GFP_KERNEL);
5e6e3a92	137	}
93803b33	138	eth_zero_addr(priv->cfg_bssid);
38c9d664	139
47411a06	140	mwifiex_stop_net_dev_queue(priv->netdev, adapter);
5e6e3a92 BZ	141	if (netif_carrier_ok(priv->netdev))
5e6e3a92 BZ	142	netif_carrier_off(priv->netdev);
5e6e3a92 BZ	143	}
5e6e3a92 BZ	144
79ff4346 AP	145	static int mwifiex_parse_tdls_event(struct mwifiex_private *priv,
	146	struct sk_buff *event_skb)
	147	{
c1078bc9	148	int ret = 0;
79ff4346 AP	149	struct mwifiex_adapter *adapter = priv->adapter;
	150	struct mwifiex_sta_node *sta_ptr;
	151	struct mwifiex_tdls_generic_event *tdls_evt =
	152	(void *)event_skb->data + sizeof(adapter->event_cause);
	153
	154	/* reserved 2 bytes are not mandatory in tdls event */
	155	if (event_skb->len < (sizeof(struct mwifiex_tdls_generic_event) -
	156	sizeof(u16) - sizeof(adapter->event_cause))) {
	157	dev_err(adapter->dev, "Invalid event length!\n");
	158	return -1;
	159	}
	160
	161	sta_ptr = mwifiex_get_sta_entry(priv, tdls_evt->peer_mac);
	162	if (!sta_ptr) {
	163	dev_err(adapter->dev, "cannot get sta entry!\n");
	164	return -1;
	165	}
	166
	167	switch (le16_to_cpu(tdls_evt->type)) {
	168	case TDLS_EVENT_LINK_TEAR_DOWN:
	169	cfg80211_tdls_oper_request(priv->netdev,
	170	tdls_evt->peer_mac,
	171	NL80211_TDLS_TEARDOWN,
	172	le16_to_cpu(tdls_evt->u.reason_code),
	173	GFP_KERNEL);
	174	break;
	175	default:
	176	break;
	177	}
	178
c1078bc9	179	return ret;
79ff4346 AP	180	}
79ff4346 AP	181
5e6e3a92 BZ	182	/*
	183	* This function handles events generated by firmware.
	184	*
	185	* This is a generic function and handles all events.
	186	*
	187	* Event specific routines are called by this function based
	188	* upon the generated event cause.
	189	*
	190	* For the following events, the function just forwards them to upper
	191	* layers, optionally recording the change -
	192	* - EVENT_LINK_SENSED
	193	* - EVENT_MIC_ERR_UNICAST
	194	* - EVENT_MIC_ERR_MULTICAST
	195	* - EVENT_PORT_RELEASE
	196	* - EVENT_RSSI_LOW
	197	* - EVENT_SNR_LOW
	198	* - EVENT_MAX_FAIL
	199	* - EVENT_RSSI_HIGH
	200	* - EVENT_SNR_HIGH
	201	* - EVENT_DATA_RSSI_LOW
	202	* - EVENT_DATA_SNR_LOW
	203	* - EVENT_DATA_RSSI_HIGH
	204	* - EVENT_DATA_SNR_HIGH
	205	* - EVENT_LINK_QUALITY
	206	* - EVENT_PRE_BEACON_LOST
	207	* - EVENT_IBSS_COALESCED
	208	* - EVENT_WEP_ICV_ERR
	209	* - EVENT_BW_CHANGE
	210	* - EVENT_HOSTWAKE_STAIE
	211	*
	212	* For the following events, no action is taken -
	213	* - EVENT_MIB_CHANGED
	214	* - EVENT_INIT_DONE
	215	* - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
	216	*
	217	* Rest of the supported events requires driver handling -
	218	* - EVENT_DEAUTHENTICATED
	219	* - EVENT_DISASSOCIATED
	220	* - EVENT_LINK_LOST
	221	* - EVENT_PS_SLEEP
	222	* - EVENT_PS_AWAKE
	223	* - EVENT_DEEP_SLEEP_AWAKE
	224	* - EVENT_HS_ACT_REQ
	225	* - EVENT_ADHOC_BCN_LOST
	226	* - EVENT_BG_SCAN_REPORT
	227	* - EVENT_WMM_STATUS_CHANGE
	228	* - EVENT_ADDBA
	229	* - EVENT_DELBA
	230	* - EVENT_BA_STREAM_TIEMOUT
	231	* - EVENT_AMSDU_AGGR_CTRL
	232	*/
	233	int mwifiex_process_sta_event(struct mwifiex_private *priv)
	234	{
	235	struct mwifiex_adapter *adapter = priv->adapter;
3d99d987	236	int ret = 0;
5e6e3a92	237	u32 eventcause = adapter->event_cause;
8cc1d523	238	u16 ctrl, reason_code;
5e6e3a92 BZ	239
	240	switch (eventcause) {
	241	case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
500f747c YAP	242	dev_err(adapter->dev,
500f747c YAP	243	"invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
5e6e3a92 BZ	244	break;
	245	case EVENT_LINK_SENSED:
	246	dev_dbg(adapter->dev, "event: LINK_SENSED\n");
	247	if (!netif_carrier_ok(priv->netdev))
	248	netif_carrier_on(priv->netdev);
47411a06	249	mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
5e6e3a92 BZ	250	break;
	251
	252	case EVENT_DEAUTHENTICATED:
	253	dev_dbg(adapter->dev, "event: Deauthenticated\n");
eaf49dbc SP	254	if (priv->wps.session_enable) {
	255	dev_dbg(adapter->dev,
	256	"info: receive deauth event in wps session\n");
	257	break;
	258	}
5e6e3a92	259	adapter->dbg.num_event_deauth++;
8cc1d523 AK	260	if (priv->media_connected) {
	261	reason_code =
	262	le16_to_cpu((__le16 )adapter->event_body);
	263	mwifiex_reset_connect_state(priv, reason_code);
	264	}
5e6e3a92 BZ	265	break;
	266
	267	case EVENT_DISASSOCIATED:
	268	dev_dbg(adapter->dev, "event: Disassociated\n");
eaf49dbc SP	269	if (priv->wps.session_enable) {
	270	dev_dbg(adapter->dev,
	271	"info: receive disassoc event in wps session\n");
	272	break;
	273	}
5e6e3a92	274	adapter->dbg.num_event_disassoc++;
8cc1d523 AK	275	if (priv->media_connected) {
	276	reason_code =
	277	le16_to_cpu((__le16 )adapter->event_body);
	278	mwifiex_reset_connect_state(priv, reason_code);
	279	}
5e6e3a92 BZ	280	break;
	281
	282	case EVENT_LINK_LOST:
	283	dev_dbg(adapter->dev, "event: Link lost\n");
	284	adapter->dbg.num_event_link_lost++;
8cc1d523 AK	285	if (priv->media_connected) {
	286	reason_code =
	287	le16_to_cpu((__le16 )adapter->event_body);
	288	mwifiex_reset_connect_state(priv, reason_code);
	289	}
5e6e3a92 BZ	290	break;
	291
	292	case EVENT_PS_SLEEP:
	293	dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");
	294
	295	adapter->ps_state = PS_STATE_PRE_SLEEP;
	296
	297	mwifiex_check_ps_cond(adapter);
	298	break;
	299
	300	case EVENT_PS_AWAKE:
	301	dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
	302	if (!adapter->pps_uapsd_mode &&
500f747c	303	priv->media_connected && adapter->sleep_period.period) {
5e6e3a92 BZ	304	adapter->pps_uapsd_mode = true;
	305	dev_dbg(adapter->dev,
	306	"event: PPS/UAPSD mode activated\n");
	307	}
	308	adapter->tx_lock_flag = false;
	309	if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
	310	if (mwifiex_check_last_packet_indication(priv)) {
500f747c YAP	311	if (adapter->data_sent) {
	312	adapter->ps_state = PS_STATE_AWAKE;
	313	adapter->pm_wakeup_card_req = false;
	314	adapter->pm_wakeup_fw_try = false;
6e9344fd	315	del_timer(&adapter->wakeup_timer);
500f747c YAP	316	break;
	317	}
	318	if (!mwifiex_send_null_packet
	319	(priv,
	320	MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET \|
	321	MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
5e6e3a92 BZ	322	adapter->ps_state =
	323	PS_STATE_SLEEP;
	324	return 0;
5e6e3a92 BZ	325	}
	326	}
	327	adapter->ps_state = PS_STATE_AWAKE;
	328	adapter->pm_wakeup_card_req = false;
	329	adapter->pm_wakeup_fw_try = false;
6e9344fd	330	del_timer(&adapter->wakeup_timer);
5e6e3a92 BZ	331
	332	break;
	333
	334	case EVENT_DEEP_SLEEP_AWAKE:
	335	adapter->if_ops.wakeup_complete(adapter);
	336	dev_dbg(adapter->dev, "event: DS_AWAKE\n");
	337	if (adapter->is_deep_sleep)
	338	adapter->is_deep_sleep = false;
	339	break;
	340
	341	case EVENT_HS_ACT_REQ:
	342	dev_dbg(adapter->dev, "event: HS_ACT_REQ\n");
fa0ecbb9 BZ	343	ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_HS_CFG_ENH,
fa0ecbb9 BZ	344	0, 0, NULL, false);
5e6e3a92 BZ	345	break;
	346
	347	case EVENT_MIC_ERR_UNICAST:
	348	dev_dbg(adapter->dev, "event: UNICAST MIC ERROR\n");
9c7ff737 AK	349	cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
	350	NL80211_KEYTYPE_PAIRWISE,
	351	-1, NULL, GFP_KERNEL);
5e6e3a92 BZ	352	break;
	353
	354	case EVENT_MIC_ERR_MULTICAST:
	355	dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n");
9c7ff737 AK	356	cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
	357	NL80211_KEYTYPE_GROUP,
	358	-1, NULL, GFP_KERNEL);
5e6e3a92 BZ	359	break;
	360	case EVENT_MIB_CHANGED:
	361	case EVENT_INIT_DONE:
	362	break;
	363
	364	case EVENT_ADHOC_BCN_LOST:
	365	dev_dbg(adapter->dev, "event: ADHOC_BCN_LOST\n");
	366	priv->adhoc_is_link_sensed = false;
	367	mwifiex_clean_txrx(priv);
47411a06	368	mwifiex_stop_net_dev_queue(priv->netdev, adapter);
5e6e3a92 BZ	369	if (netif_carrier_ok(priv->netdev))
	370	netif_carrier_off(priv->netdev);
	371	break;
	372
	373	case EVENT_BG_SCAN_REPORT:
	374	dev_dbg(adapter->dev, "event: BGS_REPORT\n");
fa0ecbb9 BZ	375	ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_BG_SCAN_QUERY,
fa0ecbb9 BZ	376	HostCmd_ACT_GEN_GET, 0, NULL, false);
5e6e3a92 BZ	377	break;
	378
	379	case EVENT_PORT_RELEASE:
	380	dev_dbg(adapter->dev, "event: PORT RELEASE\n");
	381	break;
	382
21f58d20 AK	383	case EVENT_EXT_SCAN_REPORT:
	384	dev_dbg(adapter->dev, "event: EXT_SCAN Report\n");
	385	if (adapter->ext_scan)
	386	ret = mwifiex_handle_event_ext_scan_report(priv,
	387	adapter->event_skb->data);
	388
	389	break;
	390
5e6e3a92 BZ	391	case EVENT_WMM_STATUS_CHANGE:
5e6e3a92 BZ	392	dev_dbg(adapter->dev, "event: WMM status changed\n");
fa0ecbb9 BZ	393	ret = mwifiex_send_cmd(priv, HostCmd_CMD_WMM_GET_STATUS,
fa0ecbb9 BZ	394	0, 0, NULL, false);
5e6e3a92 BZ	395	break;
	396
	397	case EVENT_RSSI_LOW:
fa444bf8 AK	398	cfg80211_cqm_rssi_notify(priv->netdev,
	399	NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
	400	GFP_KERNEL);
fa0ecbb9 BZ	401	mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
fa0ecbb9 BZ	402	HostCmd_ACT_GEN_GET, 0, NULL, false);
fa444bf8	403	priv->subsc_evt_rssi_state = RSSI_LOW_RECVD;
5e6e3a92 BZ	404	dev_dbg(adapter->dev, "event: Beacon RSSI_LOW\n");
	405	break;
	406	case EVENT_SNR_LOW:
	407	dev_dbg(adapter->dev, "event: Beacon SNR_LOW\n");
	408	break;
	409	case EVENT_MAX_FAIL:
	410	dev_dbg(adapter->dev, "event: MAX_FAIL\n");
	411	break;
	412	case EVENT_RSSI_HIGH:
fa444bf8 AK	413	cfg80211_cqm_rssi_notify(priv->netdev,
	414	NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
	415	GFP_KERNEL);
fa0ecbb9 BZ	416	mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
fa0ecbb9 BZ	417	HostCmd_ACT_GEN_GET, 0, NULL, false);
fa444bf8	418	priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD;
5e6e3a92 BZ	419	dev_dbg(adapter->dev, "event: Beacon RSSI_HIGH\n");
	420	break;
	421	case EVENT_SNR_HIGH:
	422	dev_dbg(adapter->dev, "event: Beacon SNR_HIGH\n");
	423	break;
	424	case EVENT_DATA_RSSI_LOW:
	425	dev_dbg(adapter->dev, "event: Data RSSI_LOW\n");
	426	break;
	427	case EVENT_DATA_SNR_LOW:
	428	dev_dbg(adapter->dev, "event: Data SNR_LOW\n");
	429	break;
	430	case EVENT_DATA_RSSI_HIGH:
	431	dev_dbg(adapter->dev, "event: Data RSSI_HIGH\n");
	432	break;
	433	case EVENT_DATA_SNR_HIGH:
	434	dev_dbg(adapter->dev, "event: Data SNR_HIGH\n");
	435	break;
	436	case EVENT_LINK_QUALITY:
	437	dev_dbg(adapter->dev, "event: Link Quality\n");
	438	break;
	439	case EVENT_PRE_BEACON_LOST:
	440	dev_dbg(adapter->dev, "event: Pre-Beacon Lost\n");
	441	break;
	442	case EVENT_IBSS_COALESCED:
	443	dev_dbg(adapter->dev, "event: IBSS_COALESCED\n");
fa0ecbb9	444	ret = mwifiex_send_cmd(priv,
5e6e3a92	445	HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
fa0ecbb9	446	HostCmd_ACT_GEN_GET, 0, NULL, false);
5e6e3a92 BZ	447	break;
	448	case EVENT_ADDBA:
	449	dev_dbg(adapter->dev, "event: ADDBA Request\n");
fa0ecbb9 BZ	450	mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
	451	HostCmd_ACT_GEN_SET, 0,
	452	adapter->event_body, false);
5e6e3a92 BZ	453	break;
	454	case EVENT_DELBA:
	455	dev_dbg(adapter->dev, "event: DELBA Request\n");
	456	mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
	457	break;
	458	case EVENT_BA_STREAM_TIEMOUT:
	459	dev_dbg(adapter->dev, "event: BA Stream timeout\n");
	460	mwifiex_11n_ba_stream_timeout(priv,
	461	(struct host_cmd_ds_11n_batimeout
	462	*)
	463	adapter->event_body);
	464	break;
	465	case EVENT_AMSDU_AGGR_CTRL:
8dd4372e BZ	466	ctrl = le16_to_cpu((__le16 )adapter->event_body);
	467	dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl);
	468
5e6e3a92	469	adapter->tx_buf_size =
8dd4372e	470	min_t(u16, adapter->curr_tx_buf_size, ctrl);
5e6e3a92	471	dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
500f747c	472	adapter->tx_buf_size);
5e6e3a92 BZ	473	break;
	474
	475	case EVENT_WEP_ICV_ERR:
	476	dev_dbg(adapter->dev, "event: WEP ICV error\n");
	477	break;
	478
	479	case EVENT_BW_CHANGE:
	480	dev_dbg(adapter->dev, "event: BW Change\n");
	481	break;
	482
	483	case EVENT_HOSTWAKE_STAIE:
	484	dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause);
	485	break;
e568634a	486
eab1c76b SP	487	case EVENT_REMAIN_ON_CHAN_EXPIRED:
eab1c76b SP	488	dev_dbg(adapter->dev, "event: Remain on channel expired\n");
4facc34a	489	cfg80211_remain_on_channel_expired(&priv->wdev,
eab1c76b SP	490	priv->roc_cfg.cookie,
eab1c76b SP	491	&priv->roc_cfg.chan,
eab1c76b SP	492	GFP_ATOMIC);
	493
	494	memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg));
	495
	496	break;
	497
2a7305c8 AK	498	case EVENT_CHANNEL_SWITCH_ANN:
2a7305c8 AK	499	dev_dbg(adapter->dev, "event: Channel Switch Announcement\n");
b887664d AK	500	priv->csa_expire_time =
	501	jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME);
	502	priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel;
fa0ecbb9	503	ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
2a7305c8	504	HostCmd_ACT_GEN_SET, 0,
fa0ecbb9 BZ	505	priv->curr_bss_params.bss_descriptor.mac_address,
fa0ecbb9 BZ	506	false);
2a7305c8 AK	507	break;
2a7305c8 AK	508
79ff4346 AP	509	case EVENT_TDLS_GENERIC_EVENT:
	510	ret = mwifiex_parse_tdls_event(priv, adapter->event_skb);
	511	break;
	512
808bbebc AK	513	case EVENT_TX_STATUS_REPORT:
	514	dev_dbg(adapter->dev, "event: TX_STATUS Report\n");
	515	mwifiex_parse_tx_status_event(priv, adapter->event_body);
	516	break;
	517
0a694d68 AP	518	case EVENT_CHANNEL_REPORT_RDY:
	519	dev_dbg(adapter->dev, "event: Channel Report\n");
	520	ret = mwifiex_11h_handle_chanrpt_ready(priv,
	521	adapter->event_skb);
	522	break;
3b57c1a7 AP	523	case EVENT_RADAR_DETECTED:
	524	dev_dbg(adapter->dev, "event: Radar detected\n");
	525	ret = mwifiex_11h_handle_radar_detected(priv,
	526	adapter->event_skb);
	527	break;
5e6e3a92 BZ	528	default:
5e6e3a92 BZ	529	dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
500f747c	530	eventcause);
5e6e3a92 BZ	531	break;
	532	}
	533
	534	return ret;
	535	}