[mirror_ubuntu-zesty-kernel.git] / drivers / net / wireless / mwifiex / sta_event.c

/*
 * Marvell Wireless LAN device driver: station event handling
 *
 * Copyright (C) 2011, 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;

	/* 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 (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->num_cmd_timeout && 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);
	}
	memset(priv->cfg_bssid, 0, ETH_ALEN);

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

/*
 * 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;
					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_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_async(priv,
					     HostCmd_CMD_802_11_HS_CFG_ENH,
					     0, 0, NULL);
		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_async(priv,
					     HostCmd_CMD_802_11_BG_SCAN_QUERY,
					     HostCmd_ACT_GEN_GET, 0, NULL);
		break;

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

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

	case EVENT_RSSI_LOW:
		cfg80211_cqm_rssi_notify(priv->netdev,
					 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
					 GFP_KERNEL);
		mwifiex_send_cmd_async(priv, HostCmd_CMD_RSSI_INFO,
				       HostCmd_ACT_GEN_GET, 0, NULL);
		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_async(priv, HostCmd_CMD_RSSI_INFO,
				       HostCmd_ACT_GEN_GET, 0, NULL);
		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_async(priv,
				HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
				HostCmd_ACT_GEN_GET, 0, NULL);
		break;
	case EVENT_ADDBA:
		dev_dbg(adapter->dev, "event: ADDBA Request\n");
		mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_RSP,
				       HostCmd_ACT_GEN_SET, 0,
				       adapter->event_body);
		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_async(priv,
			HostCmd_CMD_802_11_DEAUTHENTICATE,
			HostCmd_ACT_GEN_SET, 0,
			priv->curr_bss_params.bss_descriptor.mac_address);
		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	*
	4	* Copyright (C) 2011, Marvell International Ltd.
	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
	57	/* Free Tx and Rx packets, report disconnect to upper layer */
	58	mwifiex_clean_txrx(priv);
	59
	60	/* Reset SNR/NF/RSSI values */
	61	priv->data_rssi_last = 0;
	62	priv->data_nf_last = 0;
	63	priv->data_rssi_avg = 0;
	64	priv->data_nf_avg = 0;
	65	priv->bcn_rssi_last = 0;
	66	priv->bcn_nf_last = 0;
	67	priv->bcn_rssi_avg = 0;
	68	priv->bcn_nf_avg = 0;
	69	priv->rxpd_rate = 0;
	70	priv->rxpd_htinfo = 0;
	71	priv->sec_info.wpa_enabled = false;
	72	priv->sec_info.wpa2_enabled = false;
	73	priv->wpa_ie_len = 0;
	74
	75	priv->sec_info.wapi_enabled = false;
	76	priv->wapi_ie_len = 0;
	77	priv->sec_info.wapi_key_on = false;
	78
2be50b8d	79	priv->sec_info.encryption_mode = 0;
5e6e3a92 BZ	80
	81	/* Enable auto data rate */
	82	priv->is_data_rate_auto = true;
	83	priv->data_rate = 0;
	84
eecd8250	85	if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
5e6e3a92 BZ	86	priv->adhoc_state = ADHOC_IDLE;
	87	priv->adhoc_is_link_sensed = false;
	88	}
	89
	90	/*
	91	* Memorize the previous SSID and BSSID so
	92	* it could be used for re-assoc
	93	*/
	94
	95	dev_dbg(adapter->dev, "info: previous SSID=%s, SSID len=%u\n",
500f747c	96	priv->prev_ssid.ssid, priv->prev_ssid.ssid_len);
5e6e3a92 BZ	97
5e6e3a92 BZ	98	dev_dbg(adapter->dev, "info: current SSID=%s, SSID len=%u\n",
500f747c YAP	99	priv->curr_bss_params.bss_descriptor.ssid.ssid,
500f747c YAP	100	priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
5e6e3a92 BZ	101
	102	memcpy(&priv->prev_ssid,
	103	&priv->curr_bss_params.bss_descriptor.ssid,
b9be5f39	104	sizeof(struct cfg80211_ssid));
5e6e3a92 BZ	105
	106	memcpy(priv->prev_bssid,
	107	priv->curr_bss_params.bss_descriptor.mac_address, ETH_ALEN);
	108
	109	/* Need to erase the current SSID and BSSID info */
	110	memset(&priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params));
	111
	112	adapter->tx_lock_flag = false;
	113	adapter->pps_uapsd_mode = false;
	114
	115	if (adapter->num_cmd_timeout && adapter->curr_cmd)
	116	return;
	117	priv->media_connected = false;
500f747c YAP	118	dev_dbg(adapter->dev,
500f747c YAP	119	"info: successfully disconnected from %pM: reason code %d\n",
8cc1d523	120	priv->cfg_bssid, reason_code);
9612bd1e AP	121	if (priv->bss_mode == NL80211_IFTYPE_STATION \|\|
9612bd1e AP	122	priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT) {
8cc1d523 AK	123	cfg80211_disconnected(priv->netdev, reason_code, NULL, 0,
8cc1d523 AK	124	GFP_KERNEL);
5e6e3a92	125	}
38c9d664 AK	126	memset(priv->cfg_bssid, 0, ETH_ALEN);
38c9d664 AK	127
47411a06	128	mwifiex_stop_net_dev_queue(priv->netdev, adapter);
5e6e3a92 BZ	129	if (netif_carrier_ok(priv->netdev))
5e6e3a92 BZ	130	netif_carrier_off(priv->netdev);
5e6e3a92 BZ	131	}
	132
	133	/*
	134	* This function handles events generated by firmware.
	135	*
	136	* This is a generic function and handles all events.
	137	*
	138	* Event specific routines are called by this function based
	139	* upon the generated event cause.
	140	*
	141	* For the following events, the function just forwards them to upper
	142	* layers, optionally recording the change -
	143	* - EVENT_LINK_SENSED
	144	* - EVENT_MIC_ERR_UNICAST
	145	* - EVENT_MIC_ERR_MULTICAST
	146	* - EVENT_PORT_RELEASE
	147	* - EVENT_RSSI_LOW
	148	* - EVENT_SNR_LOW
	149	* - EVENT_MAX_FAIL
	150	* - EVENT_RSSI_HIGH
	151	* - EVENT_SNR_HIGH
	152	* - EVENT_DATA_RSSI_LOW
	153	* - EVENT_DATA_SNR_LOW
	154	* - EVENT_DATA_RSSI_HIGH
	155	* - EVENT_DATA_SNR_HIGH
	156	* - EVENT_LINK_QUALITY
	157	* - EVENT_PRE_BEACON_LOST
	158	* - EVENT_IBSS_COALESCED
	159	* - EVENT_WEP_ICV_ERR
	160	* - EVENT_BW_CHANGE
	161	* - EVENT_HOSTWAKE_STAIE
	162	*
	163	* For the following events, no action is taken -
	164	* - EVENT_MIB_CHANGED
	165	* - EVENT_INIT_DONE
	166	* - EVENT_DUMMY_HOST_WAKEUP_SIGNAL
	167	*
	168	* Rest of the supported events requires driver handling -
	169	* - EVENT_DEAUTHENTICATED
	170	* - EVENT_DISASSOCIATED
	171	* - EVENT_LINK_LOST
	172	* - EVENT_PS_SLEEP
	173	* - EVENT_PS_AWAKE
	174	* - EVENT_DEEP_SLEEP_AWAKE
	175	* - EVENT_HS_ACT_REQ
	176	* - EVENT_ADHOC_BCN_LOST
	177	* - EVENT_BG_SCAN_REPORT
	178	* - EVENT_WMM_STATUS_CHANGE
	179	* - EVENT_ADDBA
	180	* - EVENT_DELBA
	181	* - EVENT_BA_STREAM_TIEMOUT
	182	* - EVENT_AMSDU_AGGR_CTRL
	183	*/
	184	int mwifiex_process_sta_event(struct mwifiex_private *priv)
	185	{
	186	struct mwifiex_adapter *adapter = priv->adapter;
3d99d987	187	int ret = 0;
5e6e3a92	188	u32 eventcause = adapter->event_cause;
8cc1d523	189	u16 ctrl, reason_code;
5e6e3a92 BZ	190
	191	switch (eventcause) {
	192	case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
500f747c YAP	193	dev_err(adapter->dev,
500f747c YAP	194	"invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignore it\n");
5e6e3a92 BZ	195	break;
	196	case EVENT_LINK_SENSED:
	197	dev_dbg(adapter->dev, "event: LINK_SENSED\n");
	198	if (!netif_carrier_ok(priv->netdev))
	199	netif_carrier_on(priv->netdev);
47411a06	200	mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
5e6e3a92 BZ	201	break;
	202
	203	case EVENT_DEAUTHENTICATED:
	204	dev_dbg(adapter->dev, "event: Deauthenticated\n");
eaf49dbc SP	205	if (priv->wps.session_enable) {
	206	dev_dbg(adapter->dev,
	207	"info: receive deauth event in wps session\n");
	208	break;
	209	}
5e6e3a92	210	adapter->dbg.num_event_deauth++;
8cc1d523 AK	211	if (priv->media_connected) {
	212	reason_code =
	213	le16_to_cpu((__le16 )adapter->event_body);
	214	mwifiex_reset_connect_state(priv, reason_code);
	215	}
5e6e3a92 BZ	216	break;
	217
	218	case EVENT_DISASSOCIATED:
	219	dev_dbg(adapter->dev, "event: Disassociated\n");
eaf49dbc SP	220	if (priv->wps.session_enable) {
	221	dev_dbg(adapter->dev,
	222	"info: receive disassoc event in wps session\n");
	223	break;
	224	}
5e6e3a92	225	adapter->dbg.num_event_disassoc++;
8cc1d523 AK	226	if (priv->media_connected) {
	227	reason_code =
	228	le16_to_cpu((__le16 )adapter->event_body);
	229	mwifiex_reset_connect_state(priv, reason_code);
	230	}
5e6e3a92 BZ	231	break;
	232
	233	case EVENT_LINK_LOST:
	234	dev_dbg(adapter->dev, "event: Link lost\n");
	235	adapter->dbg.num_event_link_lost++;
8cc1d523 AK	236	if (priv->media_connected) {
	237	reason_code =
	238	le16_to_cpu((__le16 )adapter->event_body);
	239	mwifiex_reset_connect_state(priv, reason_code);
	240	}
5e6e3a92 BZ	241	break;
	242
	243	case EVENT_PS_SLEEP:
	244	dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");
	245
	246	adapter->ps_state = PS_STATE_PRE_SLEEP;
	247
	248	mwifiex_check_ps_cond(adapter);
	249	break;
	250
	251	case EVENT_PS_AWAKE:
	252	dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
	253	if (!adapter->pps_uapsd_mode &&
500f747c	254	priv->media_connected && adapter->sleep_period.period) {
5e6e3a92 BZ	255	adapter->pps_uapsd_mode = true;
	256	dev_dbg(adapter->dev,
	257	"event: PPS/UAPSD mode activated\n");
	258	}
	259	adapter->tx_lock_flag = false;
	260	if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
	261	if (mwifiex_check_last_packet_indication(priv)) {
500f747c YAP	262	if (adapter->data_sent) {
	263	adapter->ps_state = PS_STATE_AWAKE;
	264	adapter->pm_wakeup_card_req = false;
	265	adapter->pm_wakeup_fw_try = false;
	266	break;
	267	}
	268	if (!mwifiex_send_null_packet
	269	(priv,
	270	MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET \|
	271	MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
5e6e3a92 BZ	272	adapter->ps_state =
	273	PS_STATE_SLEEP;
	274	return 0;
5e6e3a92 BZ	275	}
	276	}
	277	adapter->ps_state = PS_STATE_AWAKE;
	278	adapter->pm_wakeup_card_req = false;
	279	adapter->pm_wakeup_fw_try = false;
	280
	281	break;
	282
	283	case EVENT_DEEP_SLEEP_AWAKE:
	284	adapter->if_ops.wakeup_complete(adapter);
	285	dev_dbg(adapter->dev, "event: DS_AWAKE\n");
	286	if (adapter->is_deep_sleep)
	287	adapter->is_deep_sleep = false;
	288	break;
	289
	290	case EVENT_HS_ACT_REQ:
	291	dev_dbg(adapter->dev, "event: HS_ACT_REQ\n");
600f5d90 AK	292	ret = mwifiex_send_cmd_async(priv,
	293	HostCmd_CMD_802_11_HS_CFG_ENH,
	294	0, 0, NULL);
5e6e3a92 BZ	295	break;
	296
	297	case EVENT_MIC_ERR_UNICAST:
	298	dev_dbg(adapter->dev, "event: UNICAST MIC ERROR\n");
9c7ff737 AK	299	cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
	300	NL80211_KEYTYPE_PAIRWISE,
	301	-1, NULL, GFP_KERNEL);
5e6e3a92 BZ	302	break;
	303
	304	case EVENT_MIC_ERR_MULTICAST:
	305	dev_dbg(adapter->dev, "event: MULTICAST MIC ERROR\n");
9c7ff737 AK	306	cfg80211_michael_mic_failure(priv->netdev, priv->cfg_bssid,
	307	NL80211_KEYTYPE_GROUP,
	308	-1, NULL, GFP_KERNEL);
5e6e3a92 BZ	309	break;
	310	case EVENT_MIB_CHANGED:
	311	case EVENT_INIT_DONE:
	312	break;
	313
	314	case EVENT_ADHOC_BCN_LOST:
	315	dev_dbg(adapter->dev, "event: ADHOC_BCN_LOST\n");
	316	priv->adhoc_is_link_sensed = false;
	317	mwifiex_clean_txrx(priv);
47411a06	318	mwifiex_stop_net_dev_queue(priv->netdev, adapter);
5e6e3a92 BZ	319	if (netif_carrier_ok(priv->netdev))
	320	netif_carrier_off(priv->netdev);
	321	break;
	322
	323	case EVENT_BG_SCAN_REPORT:
	324	dev_dbg(adapter->dev, "event: BGS_REPORT\n");
600f5d90 AK	325	ret = mwifiex_send_cmd_async(priv,
	326	HostCmd_CMD_802_11_BG_SCAN_QUERY,
	327	HostCmd_ACT_GEN_GET, 0, NULL);
5e6e3a92 BZ	328	break;
	329
	330	case EVENT_PORT_RELEASE:
	331	dev_dbg(adapter->dev, "event: PORT RELEASE\n");
	332	break;
	333
	334	case EVENT_WMM_STATUS_CHANGE:
	335	dev_dbg(adapter->dev, "event: WMM status changed\n");
600f5d90 AK	336	ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_WMM_GET_STATUS,
600f5d90 AK	337	0, 0, NULL);
5e6e3a92 BZ	338	break;
	339
	340	case EVENT_RSSI_LOW:
fa444bf8 AK	341	cfg80211_cqm_rssi_notify(priv->netdev,
	342	NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
	343	GFP_KERNEL);
	344	mwifiex_send_cmd_async(priv, HostCmd_CMD_RSSI_INFO,
	345	HostCmd_ACT_GEN_GET, 0, NULL);
	346	priv->subsc_evt_rssi_state = RSSI_LOW_RECVD;
5e6e3a92 BZ	347	dev_dbg(adapter->dev, "event: Beacon RSSI_LOW\n");
	348	break;
	349	case EVENT_SNR_LOW:
	350	dev_dbg(adapter->dev, "event: Beacon SNR_LOW\n");
	351	break;
	352	case EVENT_MAX_FAIL:
	353	dev_dbg(adapter->dev, "event: MAX_FAIL\n");
	354	break;
	355	case EVENT_RSSI_HIGH:
fa444bf8 AK	356	cfg80211_cqm_rssi_notify(priv->netdev,
	357	NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
	358	GFP_KERNEL);
	359	mwifiex_send_cmd_async(priv, HostCmd_CMD_RSSI_INFO,
	360	HostCmd_ACT_GEN_GET, 0, NULL);
	361	priv->subsc_evt_rssi_state = RSSI_HIGH_RECVD;
5e6e3a92 BZ	362	dev_dbg(adapter->dev, "event: Beacon RSSI_HIGH\n");
	363	break;
	364	case EVENT_SNR_HIGH:
	365	dev_dbg(adapter->dev, "event: Beacon SNR_HIGH\n");
	366	break;
	367	case EVENT_DATA_RSSI_LOW:
	368	dev_dbg(adapter->dev, "event: Data RSSI_LOW\n");
	369	break;
	370	case EVENT_DATA_SNR_LOW:
	371	dev_dbg(adapter->dev, "event: Data SNR_LOW\n");
	372	break;
	373	case EVENT_DATA_RSSI_HIGH:
	374	dev_dbg(adapter->dev, "event: Data RSSI_HIGH\n");
	375	break;
	376	case EVENT_DATA_SNR_HIGH:
	377	dev_dbg(adapter->dev, "event: Data SNR_HIGH\n");
	378	break;
	379	case EVENT_LINK_QUALITY:
	380	dev_dbg(adapter->dev, "event: Link Quality\n");
	381	break;
	382	case EVENT_PRE_BEACON_LOST:
	383	dev_dbg(adapter->dev, "event: Pre-Beacon Lost\n");
	384	break;
	385	case EVENT_IBSS_COALESCED:
	386	dev_dbg(adapter->dev, "event: IBSS_COALESCED\n");
600f5d90	387	ret = mwifiex_send_cmd_async(priv,
5e6e3a92	388	HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
600f5d90	389	HostCmd_ACT_GEN_GET, 0, NULL);
5e6e3a92 BZ	390	break;
	391	case EVENT_ADDBA:
	392	dev_dbg(adapter->dev, "event: ADDBA Request\n");
600f5d90 AK	393	mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_RSP,
	394	HostCmd_ACT_GEN_SET, 0,
	395	adapter->event_body);
5e6e3a92 BZ	396	break;
	397	case EVENT_DELBA:
	398	dev_dbg(adapter->dev, "event: DELBA Request\n");
	399	mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
	400	break;
	401	case EVENT_BA_STREAM_TIEMOUT:
	402	dev_dbg(adapter->dev, "event: BA Stream timeout\n");
	403	mwifiex_11n_ba_stream_timeout(priv,
	404	(struct host_cmd_ds_11n_batimeout
	405	*)
	406	adapter->event_body);
	407	break;
	408	case EVENT_AMSDU_AGGR_CTRL:
8dd4372e BZ	409	ctrl = le16_to_cpu((__le16 )adapter->event_body);
	410	dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl);
	411
5e6e3a92	412	adapter->tx_buf_size =
8dd4372e	413	min_t(u16, adapter->curr_tx_buf_size, ctrl);
5e6e3a92	414	dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
500f747c	415	adapter->tx_buf_size);
5e6e3a92 BZ	416	break;
	417
	418	case EVENT_WEP_ICV_ERR:
	419	dev_dbg(adapter->dev, "event: WEP ICV error\n");
	420	break;
	421
	422	case EVENT_BW_CHANGE:
	423	dev_dbg(adapter->dev, "event: BW Change\n");
	424	break;
	425
	426	case EVENT_HOSTWAKE_STAIE:
	427	dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause);
	428	break;
e568634a	429
eab1c76b SP	430	case EVENT_REMAIN_ON_CHAN_EXPIRED:
	431	dev_dbg(adapter->dev, "event: Remain on channel expired\n");
	432	cfg80211_remain_on_channel_expired(priv->wdev,
	433	priv->roc_cfg.cookie,
	434	&priv->roc_cfg.chan,
eab1c76b SP	435	GFP_ATOMIC);
	436
	437	memset(&priv->roc_cfg, 0x00, sizeof(struct mwifiex_roc_cfg));
	438
	439	break;
	440
2a7305c8 AK	441	case EVENT_CHANNEL_SWITCH_ANN:
2a7305c8 AK	442	dev_dbg(adapter->dev, "event: Channel Switch Announcement\n");
b887664d AK	443	priv->csa_expire_time =
	444	jiffies + msecs_to_jiffies(DFS_CHAN_MOVE_TIME);
	445	priv->csa_chan = priv->curr_bss_params.bss_descriptor.channel;
2a7305c8 AK	446	ret = mwifiex_send_cmd_async(priv,
	447	HostCmd_CMD_802_11_DEAUTHENTICATE,
	448	HostCmd_ACT_GEN_SET, 0,
	449	priv->curr_bss_params.bss_descriptor.mac_address);
	450	break;
	451
5e6e3a92 BZ	452	default:
5e6e3a92 BZ	453	dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
500f747c	454	eventcause);
5e6e3a92 BZ	455	break;
	456	}
	457
	458	return ret;
	459	}