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path: root/drivers/net/wireless/sd8797/mlan/mlan_sta_event.c
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/** @file mlan_sta_event.c
 *
 *  @brief This file contains MLAN event handling.
 *
 *  Copyright (C) 2008-2011, 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.
 */

/********************************************************
Change log:
    10/13/2008: initial version
********************************************************/

#include "mlan.h"
#include "mlan_join.h"
#include "mlan_util.h"
#include "mlan_fw.h"
#include "mlan_main.h"
#include "mlan_wmm.h"
#include "mlan_11n.h"
#include "mlan_11h.h"

/********************************************************
        Global Variables
********************************************************/

/********************************************************
        Local Functions
********************************************************/

/** 
 *  @brief This function handles link lost, deauth and
 *  		disassoc events.
 *  
 *  @param priv    A pointer to mlan_private structure
 *  @return        N/A
 */
static t_void
wlan_handle_disconnect_event(pmlan_private pmpriv)
{
    ENTER();

    if (pmpriv->media_connected == MTRUE) {
        wlan_reset_connect_state(pmpriv, MTRUE);
    }

    LEAVE();
}

/********************************************************
        Global Functions
********************************************************/
/** 
 *  @brief This function handles disconnect event, reports disconnect
 *  		to upper layer, cleans tx/rx packets,
 *  		resets link state etc.
 *  
 *  @param priv            A pointer to mlan_private structure
 *  @param drv_disconnect  Flag indicating the driver should disconnect
 *                         and flush pending packets.
 *
 *  @return        N/A
 */
t_void
wlan_reset_connect_state(pmlan_private priv, t_u8 drv_disconnect)
{
    mlan_adapter *pmadapter = priv->adapter;
    mlan_status ret = MLAN_STATUS_SUCCESS;
    state_11d_t enable;

    ENTER();

    if (priv->media_connected != MTRUE) {
        LEAVE();
        return;
    }

    PRINTM(MINFO, "Handles disconnect event.\n");

    if (drv_disconnect) {
        priv->media_connected = MFALSE;
        wlan_11h_check_update_radar_det_state(priv);
    }

    if (priv->port_ctrl_mode == MTRUE) {
        /* Close the port on Disconnect */
        PRINTM(MINFO, "DISC: port_status = CLOSED\n");
        priv->port_open = MFALSE;
    }
    priv->scan_block = MFALSE;

    /* 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->max_amsdu = 0;

    priv->sec_info.ewpa_enabled = MFALSE;
    priv->sec_info.wpa_enabled = MFALSE;
    priv->sec_info.wpa2_enabled = MFALSE;
    priv->wpa_ie_len = 0;

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

    priv->wps.session_enable = MFALSE;
    memset(priv->adapter, (t_u8 *) & priv->wps.wps_ie, 0x00,
           sizeof(priv->wps.wps_ie));

    priv->sec_info.encryption_mode = MLAN_ENCRYPTION_MODE_NONE;

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

    if (priv->bss_mode == MLAN_BSS_MODE_IBSS) {
        priv->adhoc_state = ADHOC_IDLE;
        priv->adhoc_is_link_sensed = MFALSE;
        priv->intf_state_11h.adhoc_auto_sel_chan = MTRUE;
    }

    if (drv_disconnect) {
        /* Free Tx and Rx packets, report disconnect to upper layer */
        wlan_clean_txrx(priv);

        /* Need to erase the current SSID and BSSID info */
        memset(pmadapter,
               &priv->curr_bss_params, 0x00, sizeof(priv->curr_bss_params));
    }
    pmadapter->tx_lock_flag = MFALSE;
    pmadapter->pps_uapsd_mode = MFALSE;
    pmadapter->delay_null_pkt = MFALSE;

    if ((wlan_11d_is_enabled(priv)) &&
        (priv->state_11d.user_enable_11d == DISABLE_11D)) {

        priv->state_11d.enable_11d = DISABLE_11D;
        enable = DISABLE_11D;

        /* Send cmd to FW to enable/disable 11D function */
        ret = wlan_prepare_cmd(priv,
                               HostCmd_CMD_802_11_SNMP_MIB,
                               HostCmd_ACT_GEN_SET, Dot11D_i, MNULL, &enable);
        if (ret)
            PRINTM(MERROR, "11D: Failed to enable 11D\n");
    }
    if (pmadapter->num_cmd_timeout && pmadapter->curr_cmd &&
        (pmadapter->cmd_timer_is_set == MFALSE)) {
        LEAVE();
        return;
    }

    wlan_recv_event(priv, MLAN_EVENT_ID_FW_DISCONNECTED, MNULL);

    LEAVE();
}

/** 
 *  @brief This function sends the OBSS scan parameters to the application
 *  
 *  @param pmpriv     A pointer to mlan_private structure
 *
 *  @return           N/A
 */
t_void
wlan_2040_coex_event(pmlan_private pmpriv)
{
    t_u8 event_buf[100];
    mlan_event *pevent = (mlan_event *) event_buf;
    t_u8 ele_len;

    ENTER();

    if (pmpriv->curr_bss_params.bss_descriptor.poverlap_bss_scan_param &&
        pmpriv->curr_bss_params.bss_descriptor.poverlap_bss_scan_param->
        ieee_hdr.element_id == OVERLAPBSSSCANPARAM) {
        ele_len =
            pmpriv->curr_bss_params.bss_descriptor.poverlap_bss_scan_param->
            ieee_hdr.len;
        pevent->bss_index = pmpriv->bss_index;
        pevent->event_id = MLAN_EVENT_ID_DRV_OBSS_SCAN_PARAM;
        /* Copy OBSS scan parameters */
        memcpy(pmpriv->adapter, (t_u8 *) pevent->event_buf,
               (t_u8 *) & pmpriv->curr_bss_params.bss_descriptor.
               poverlap_bss_scan_param->obss_scan_param, ele_len);
        pevent->event_len = ele_len;
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_DRV_OBSS_SCAN_PARAM, pevent);
    }

    LEAVE();
}

/** 
 *  @brief This function handles events generated by firmware
 *  
 *  @param priv	A pointer to mlan_private structure
 *
 *  @return		MLAN_STATUS_SUCCESS or MLAN_STATUS_FAILURE
 */
mlan_status
wlan_ops_sta_process_event(IN t_void * priv)
{
    pmlan_private pmpriv = (pmlan_private) priv;
    pmlan_adapter pmadapter = pmpriv->adapter;
    mlan_status ret = MLAN_STATUS_SUCCESS;
    t_u32 eventcause = pmadapter->event_cause;
    t_u8 event_buf[100];
    t_u8 *evt_buf = MNULL;
    pmlan_buffer pmbuf = pmadapter->pmlan_buffer_event;
    pmlan_callbacks pcb = &pmadapter->callbacks;
    mlan_event *pevent = (mlan_event *) event_buf;

    ENTER();

    if (eventcause != EVENT_PS_SLEEP && eventcause != EVENT_PS_AWAKE &&
        pmbuf->data_len > sizeof(eventcause))
        DBG_HEXDUMP(MEVT_D, "EVENT", pmbuf->pbuf + pmbuf->data_offset,
                    pmbuf->data_len);

    switch (eventcause) {
    case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
        PRINTM(MERROR,
               "Invalid EVENT: DUMMY_HOST_WAKEUP_SIGNAL, ignoring it\n");
        break;
    case EVENT_LINK_SENSED:
        PRINTM(MEVENT, "EVENT: LINK_SENSED\n");
        pmpriv->adhoc_is_link_sensed = MTRUE;
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_ADHOC_LINK_SENSED, MNULL);
        break;

    case EVENT_DEAUTHENTICATED:
        PRINTM(MEVENT, "EVENT: Deauthenticated\n");
        pmadapter->dbg.num_event_deauth++;
        wlan_handle_disconnect_event(pmpriv);

        break;

    case EVENT_DISASSOCIATED:
        PRINTM(MEVENT, "EVENT: Disassociated\n");
        pmadapter->dbg.num_event_disassoc++;
        wlan_handle_disconnect_event(pmpriv);
        break;

    case EVENT_LINK_LOST:
        PRINTM(MEVENT, "EVENT: Link lost\n");
        pmadapter->dbg.num_event_link_lost++;
        wlan_handle_disconnect_event(pmpriv);
        break;

    case EVENT_PS_SLEEP:
        PRINTM(MINFO, "EVENT: SLEEP\n");
        PRINTM(MEVENT, "_");

        /* Handle unexpected PS SLEEP event */
        if (pmadapter->ps_state == PS_STATE_SLEEP_CFM)
            break;
        pmadapter->ps_state = PS_STATE_PRE_SLEEP;

        wlan_check_ps_cond(pmadapter);
        break;

    case EVENT_PS_AWAKE:
        PRINTM(MINFO, "EVENT: AWAKE \n");
        PRINTM(MEVENT, "|");
        if (!pmadapter->pps_uapsd_mode &&
            pmpriv->media_connected &&
            (pmpriv->port_open || !pmpriv->port_ctrl_mode) &&
            pmadapter->sleep_period.period) {
            pmadapter->pps_uapsd_mode = MTRUE;
            PRINTM(MEVENT, "PPS/UAPSD mode activated\n");
        }
        /* Handle unexpected PS AWAKE event */
        if (pmadapter->ps_state == PS_STATE_SLEEP_CFM)
            break;
        pmadapter->tx_lock_flag = MFALSE;
        if (pmadapter->pps_uapsd_mode && pmadapter->gen_null_pkt) {
            if (MTRUE == wlan_check_last_packet_indication(pmpriv)) {
                if (!pmadapter->data_sent) {
                    if (wlan_send_null_packet(pmpriv,
                                              MRVDRV_TxPD_POWER_MGMT_NULL_PACKET
                                              |
                                              MRVDRV_TxPD_POWER_MGMT_LAST_PACKET)
                        == MLAN_STATUS_SUCCESS) {
                        LEAVE();
                        return MLAN_STATUS_SUCCESS;
                    }
                }
            }
        }
        pmadapter->ps_state = PS_STATE_AWAKE;
        pmadapter->pm_wakeup_card_req = MFALSE;
        pmadapter->pm_wakeup_fw_try = MFALSE;
        break;

    case EVENT_HS_ACT_REQ:
        PRINTM(MEVENT, "EVENT: HS_ACT_REQ\n");
        ret = wlan_prepare_cmd(priv,
                               HostCmd_CMD_802_11_HS_CFG_ENH,
                               0, 0, MNULL, MNULL);
        break;

    case EVENT_MIC_ERR_UNICAST:
        PRINTM(MEVENT, "EVENT: UNICAST MIC ERROR\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_MIC_ERR_UNI, MNULL);
        break;

    case EVENT_MIC_ERR_MULTICAST:
        PRINTM(MEVENT, "EVENT: MULTICAST MIC ERROR\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_MIC_ERR_MUL, MNULL);
        break;
    case EVENT_MIB_CHANGED:
    case EVENT_INIT_DONE:
        break;

    case EVENT_ADHOC_BCN_LOST:
        PRINTM(MEVENT, "EVENT: ADHOC_BCN_LOST\n");
        pmpriv->adhoc_is_link_sensed = MFALSE;
        wlan_clean_txrx(pmpriv);
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_ADHOC_LINK_LOST, MNULL);
        break;

    case EVENT_BG_SCAN_REPORT:
        PRINTM(MEVENT, "EVENT: BGS_REPORT\n");
        /* Clear the previous scan result */
        memset(pmadapter, pmadapter->pscan_table, 0x00,
               sizeof(BSSDescriptor_t) * MRVDRV_MAX_BSSID_LIST);
        pmadapter->num_in_scan_table = 0;
        pmadapter->pbcn_buf_end = pmadapter->bcn_buf;
        ret = wlan_prepare_cmd(pmpriv,
                               HostCmd_CMD_802_11_BG_SCAN_QUERY,
                               HostCmd_ACT_GEN_GET, 0, MNULL, MNULL);
        break;

    case EVENT_PORT_RELEASE:
        PRINTM(MEVENT, "EVENT: PORT RELEASE\n");
        /* Open the port for e-supp mode */
        if (pmpriv->port_ctrl_mode == MTRUE) {
            PRINTM(MINFO, "PORT_REL: port_status = OPEN\n");
            pmpriv->port_open = MTRUE;
        }
        pmpriv->scan_block = MFALSE;
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_PORT_RELEASE, MNULL);
        break;

    case EVENT_STOP_TX:
        PRINTM(MEVENT, "EVENT: Stop Tx (%#x)\n", eventcause);
        wlan_11h_tx_disable(pmpriv);    // this fn will send event up to MOAL
        break;
    case EVENT_START_TX:
        PRINTM(MEVENT, "EVENT: Start Tx (%#x)\n", eventcause);
        wlan_11h_tx_enable(pmpriv);     // this fn will send event up to MOAL
        break;
    case EVENT_CHANNEL_SWITCH:
        PRINTM(MEVENT, "EVENT: Channel Switch (%#x)\n", eventcause);
        /* To be handled for 'chanswann' private command */
        break;
    case EVENT_CHANNEL_SWITCH_ANN:
        PRINTM(MEVENT, "EVENT: Channel Switch Announcement\n");
        /* Here, pass up event first, as handling will send deauth */
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_CHANNEL_SWITCH_ANN, MNULL);
        wlan_11h_handle_event_chanswann(pmpriv);
        break;
    case EVENT_RADAR_DETECTED:
        PRINTM(MEVENT, "EVENT: Radar Detected\n");

        /* Send as passthru first, this event can cause other events */
        memset(pmadapter, pevent, 0x00, sizeof(event_buf));
        pevent->bss_index = pmpriv->bss_index;
        pevent->event_id = MLAN_EVENT_ID_DRV_PASSTHRU;
        pevent->event_len = pmbuf->data_len;
        memcpy(pmadapter, (t_u8 *) pevent->event_buf,
               pmbuf->pbuf + pmbuf->data_offset, pevent->event_len);
        wlan_recv_event(pmpriv, pevent->event_id, pevent);

        if (pmadapter->state_rdh.stage == RDH_OFF) {
            pmadapter->state_rdh.stage = RDH_CHK_INTFS;
            wlan_11h_radar_detected_handling(pmadapter);
        } else {
            PRINTM(MEVENT, "Ignore Event Radar Detected - handling"
                   " already in progress.\n");
        }

        break;

    case EVENT_CHANNEL_REPORT_RDY:
        PRINTM(MEVENT, "EVENT: Channel Report Ready\n");
        /* Allocate memory for event buffer */
        ret = pcb->moal_malloc(pmadapter->pmoal_handle,
                               MAX_EVENT_SIZE, MLAN_MEM_DEF, &evt_buf);
        if ((ret == MLAN_STATUS_SUCCESS) && evt_buf) {
            memset(pmadapter, evt_buf, 0x00, MAX_EVENT_SIZE);
            /* Setup event buffer */
            pevent = (pmlan_event) evt_buf;
            pevent->bss_index = pmpriv->bss_index;
            pevent->event_id = MLAN_EVENT_ID_FW_CHANNEL_REPORT_RDY;
            pevent->event_len = pmbuf->data_len - sizeof(eventcause);
            /* Copy event data */
            memcpy(pmadapter, (t_u8 *) pevent->event_buf,
                   pmbuf->pbuf + pmbuf->data_offset + sizeof(eventcause),
                   pevent->event_len);
            /* Handle / pass event data */
            ret = wlan_11h_handle_event_chanrpt_ready(pmpriv, pevent);

            /* Also send this event as passthru */
            pevent->event_id = MLAN_EVENT_ID_DRV_PASSTHRU;
            pevent->event_len = pmbuf->data_len;
            memcpy(pmadapter, (t_u8 *) pevent->event_buf,
                   pmbuf->pbuf + pmbuf->data_offset, pevent->event_len);
            wlan_recv_event(pmpriv, pevent->event_id, pevent);
            /* Now done with buffer */
            pcb->moal_mfree(pmadapter->pmoal_handle, evt_buf);
        }
        /* Send up this Event to unblock MOAL waitqueue */
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_DRV_MEAS_REPORT, MNULL);
        break;
    case EVENT_EXT_SCAN_REPORT:
        PRINTM(MEVENT, "EVENT: EXT_SCAN Report (%#x)\n", eventcause);
        ret = wlan_handle_event_ext_scan_report(priv, pmbuf);
        break;
    case EVENT_MEAS_REPORT_RDY:
        PRINTM(MEVENT, "EVENT: Measurement Report Ready (%#x)\n", eventcause);
        wlan_prepare_cmd(priv, HostCmd_CMD_MEASUREMENT_REPORT,
                         HostCmd_ACT_GEN_SET, 0, 0, MNULL);
        break;
    case EVENT_WMM_STATUS_CHANGE:
        if (pmbuf && pmbuf->data_len
            > sizeof(eventcause) + sizeof(MrvlIEtypesHeader_t)) {
            PRINTM(MEVENT, "EVENT: WMM status changed: %d\n", pmbuf->data_len);

            evt_buf = (pmbuf->pbuf + pmbuf->data_offset + sizeof(eventcause));

            wlan_ret_wmm_get_status(pmpriv,
                                    evt_buf,
                                    pmbuf->data_len - sizeof(eventcause));
        } else {
            PRINTM(MEVENT, "EVENT: WMM status changed\n");
            ret = wlan_cmd_wmm_status_change(pmpriv);
        }
        break;

    case EVENT_RSSI_LOW:
        PRINTM(MEVENT, "EVENT: Beacon RSSI_LOW\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_BCN_RSSI_LOW, MNULL);
        break;
    case EVENT_SNR_LOW:
        PRINTM(MEVENT, "EVENT: Beacon SNR_LOW\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_BCN_SNR_LOW, MNULL);
        break;
    case EVENT_MAX_FAIL:
        PRINTM(MEVENT, "EVENT: MAX_FAIL\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_MAX_FAIL, MNULL);
        break;
    case EVENT_RSSI_HIGH:
        PRINTM(MEVENT, "EVENT: Beacon RSSI_HIGH\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_BCN_RSSI_HIGH, MNULL);
        break;
    case EVENT_SNR_HIGH:
        PRINTM(MEVENT, "EVENT: Beacon SNR_HIGH\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_BCN_SNR_HIGH, MNULL);
        break;
    case EVENT_DATA_RSSI_LOW:
        PRINTM(MEVENT, "EVENT: Data RSSI_LOW\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_DATA_RSSI_LOW, MNULL);
        break;
    case EVENT_DATA_SNR_LOW:
        PRINTM(MEVENT, "EVENT: Data SNR_LOW\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_DATA_SNR_LOW, MNULL);
        break;
    case EVENT_DATA_RSSI_HIGH:
        PRINTM(MEVENT, "EVENT: Data RSSI_HIGH\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_DATA_RSSI_HIGH, MNULL);
        break;
    case EVENT_DATA_SNR_HIGH:
        PRINTM(MEVENT, "EVENT: Data SNR_HIGH\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_DATA_SNR_HIGH, MNULL);
        break;
    case EVENT_LINK_QUALITY:
        PRINTM(MEVENT, "EVENT: Link Quality\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_LINK_QUALITY, MNULL);
        break;
    case EVENT_PRE_BEACON_LOST:
        PRINTM(MEVENT, "EVENT: Pre-Beacon Lost\n");
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_PRE_BCN_LOST, MNULL);
        break;
    case EVENT_IBSS_COALESCED:
        PRINTM(MEVENT, "EVENT: IBSS_COALESCED\n");
        ret = wlan_prepare_cmd(pmpriv,
                               HostCmd_CMD_802_11_IBSS_COALESCING_STATUS,
                               HostCmd_ACT_GEN_GET, 0, MNULL, MNULL);
        break;
    case EVENT_ADDBA:
        PRINTM(MEVENT, "EVENT: ADDBA Request\n");
        wlan_prepare_cmd(pmpriv, HostCmd_CMD_11N_ADDBA_RSP,
                         HostCmd_ACT_GEN_SET, 0, MNULL, pmadapter->event_body);
        break;
    case EVENT_DELBA:
        PRINTM(MEVENT, "EVENT: DELBA Request\n");
        wlan_11n_delete_bastream(pmpriv, pmadapter->event_body);
        break;
    case EVENT_BA_STREAM_TIMEOUT:
        PRINTM(MEVENT, "EVENT:  BA Stream timeout\n");
        wlan_11n_ba_stream_timeout(pmpriv,
                                   (HostCmd_DS_11N_BATIMEOUT *) pmadapter->
                                   event_body);
        break;
    case EVENT_RXBA_SYNC:
        PRINTM(MEVENT, "EVENT:  RXBA_SYNC\n");
        wlan_11n_rxba_sync_event(pmpriv, pmadapter->event_body,
                                 pmbuf->data_len - sizeof(eventcause));
        break;
    case EVENT_AMSDU_AGGR_CTRL:
        PRINTM(MEVENT, "EVENT:  AMSDU_AGGR_CTRL %d\n",
               *(t_u16 *) pmadapter->event_body);
        pmadapter->tx_buf_size =
            MIN(pmadapter->curr_tx_buf_size,
                wlan_le16_to_cpu(*(t_u16 *) pmadapter->event_body));
        PRINTM(MEVENT, "tx_buf_size %d\n", pmadapter->tx_buf_size);
        break;

    case EVENT_WEP_ICV_ERR:
        PRINTM(MEVENT, "EVENT: WEP ICV error\n");
        pevent->bss_index = pmpriv->bss_index;
        pevent->event_id = MLAN_EVENT_ID_FW_WEP_ICV_ERR;
        pevent->event_len = sizeof(Event_WEP_ICV_ERR);
        memcpy(pmadapter, (t_u8 *) pevent->event_buf, pmadapter->event_body,
               pevent->event_len);
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_WEP_ICV_ERR, pevent);
        break;

    case EVENT_BW_CHANGE:
        PRINTM(MEVENT, "EVENT: BW Change\n");
        pevent->bss_index = pmpriv->bss_index;
        pevent->event_id = MLAN_EVENT_ID_FW_BW_CHANGED;
        pevent->event_len = sizeof(t_u8);
        /* Copy event body from the event buffer */
        memcpy(pmadapter, (t_u8 *) pevent->event_buf, pmadapter->event_body,
               pevent->event_len);
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_BW_CHANGED, pevent);
        break;

#ifdef WIFI_DIRECT_SUPPORT
    case EVENT_WIFIDIRECT_GENERIC_EVENT:
    case EVENT_WIFIDIRECT_SERVICE_DISCOVERY:
        PRINTM(MEVENT, "EVENT: WIFIDIRECT event %d\n", eventcause);
        /* Allocate memory for event buffer */
        ret =
            pcb->moal_malloc(pmadapter->pmoal_handle, MAX_EVENT_SIZE,
                             MLAN_MEM_DEF, &evt_buf);
        if ((ret == MLAN_STATUS_SUCCESS) && evt_buf) {
            pevent = (pmlan_event) evt_buf;
            pevent->bss_index = pmpriv->bss_index;
            pevent->event_id = MLAN_EVENT_ID_DRV_PASSTHRU;
            pevent->event_len = pmbuf->data_len;
            memcpy(pmadapter, (t_u8 *) pevent->event_buf,
                   pmbuf->pbuf + pmbuf->data_offset, pevent->event_len);
            wlan_recv_event(pmpriv, pevent->event_id, pevent);
            pcb->moal_mfree(pmadapter->pmoal_handle, evt_buf);
        }
        break;
    case EVENT_REMAIN_ON_CHANNEL_EXPIRED:
        PRINTM(MEVENT, "EVENT: REMAIN_ON_CHANNEL_EXPIRED reason=%d\n",
               *(t_u16 *) pmadapter->event_body);
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_REMAIN_ON_CHAN_EXPIRED, MNULL);
        break;
#endif /* WIFI_DIRECT_SUPPORT */

    default:
        PRINTM(MEVENT, "EVENT: unknown event id: %#x\n", eventcause);
        wlan_recv_event(pmpriv, MLAN_EVENT_ID_FW_UNKNOWN, MNULL);
        break;
    }

    LEAVE();
    return ret;
}