mlme_linux.c

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/******************************************************************************
 * mlme_linux.c
 *
 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
 * Linux device driver for RTL8192SU
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * Modifications for inclusion into the Linux staging tree are
 * Copyright(c) 2010 Larry Finger. All rights reserved.
 *
 * Contact information:
 * WLAN FAE <[email protected]>.
 * Larry Finger <[email protected]>
 *
 ******************************************************************************/

#define _MLME_OSDEP_C_

#include "osdep_service.h"
#include "drv_types.h"
#include "mlme_osdep.h"

static void sitesurvey_ctrl_handler(void *FunctionContext)
{
    struct _adapter *adapter = (struct _adapter *)FunctionContext;

    _r8712_sitesurvey_ctrl_handler(adapter);
    _set_timer(&adapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
           3000);
}

static void join_timeout_handler (void *FunctionContext)
{
    struct _adapter *adapter = (struct _adapter *)FunctionContext;
    _r8712_join_timeout_handler(adapter);
}

static void _scan_timeout_handler (void *FunctionContext)
{
    struct _adapter *adapter = (struct _adapter *)FunctionContext;
    r8712_scan_timeout_handler(adapter);
}

static void dhcp_timeout_handler (void *FunctionContext)
{
    struct _adapter *adapter = (struct _adapter *)FunctionContext;
    _r8712_dhcp_timeout_handler(adapter);
}

static void wdg_timeout_handler (void *FunctionContext)
{
    struct _adapter *adapter = (struct _adapter *)FunctionContext;

    _r8712_wdg_timeout_handler(adapter);

    _set_timer(&adapter->mlmepriv.wdg_timer, 2000);
}

void r8712_init_mlme_timer(struct _adapter *padapter)
{
    struct  mlme_priv *pmlmepriv = &padapter->mlmepriv;

    _init_timer(&(pmlmepriv->assoc_timer), padapter->pnetdev,
            join_timeout_handler, (pmlmepriv->nic_hdl));
    _init_timer(&(pmlmepriv->sitesurveyctrl.sitesurvey_ctrl_timer),
            padapter->pnetdev, sitesurvey_ctrl_handler,
            (u8 *)(pmlmepriv->nic_hdl));
    _init_timer(&(pmlmepriv->scan_to_timer), padapter->pnetdev,
            _scan_timeout_handler, (pmlmepriv->nic_hdl));
    _init_timer(&(pmlmepriv->dhcp_timer), padapter->pnetdev,
            dhcp_timeout_handler, (u8 *)(pmlmepriv->nic_hdl));
    _init_timer(&(pmlmepriv->wdg_timer), padapter->pnetdev,
            wdg_timeout_handler, (u8 *)(pmlmepriv->nic_hdl));
}

void r8712_os_indicate_connect(struct _adapter *adapter)
{
    r8712_indicate_wx_assoc_event(adapter);
    netif_carrier_on(adapter->pnetdev);
}

static struct RT_PMKID_LIST   backupPMKIDList[NUM_PMKID_CACHE];
void r8712_os_indicate_disconnect(struct _adapter *adapter)
{
    u8 backupPMKIDIndex = 0;
    u8 backupTKIPCountermeasure = 0x00;

    r8712_indicate_wx_disassoc_event(adapter);
    netif_carrier_off(adapter->pnetdev);
    if (adapter->securitypriv.AuthAlgrthm == 2) { /*/802.1x*/
        /* We have to backup the PMK information for WiFi PMK Caching
         * test item. Backup the btkip_countermeasure information.
         * When the countermeasure is trigger, the driver have to
         * disconnect with AP for 60 seconds.
         */

        memset(&backupPMKIDList[0], 0x00, sizeof(
            struct RT_PMKID_LIST) * NUM_PMKID_CACHE);
        memcpy(&backupPMKIDList[0], &adapter->securitypriv.
            PMKIDList[0], sizeof(struct RT_PMKID_LIST) *
            NUM_PMKID_CACHE);
        backupPMKIDIndex = adapter->securitypriv.PMKIDIndex;
        backupTKIPCountermeasure = adapter->securitypriv.
                       btkip_countermeasure;
        memset((unsigned char *)&adapter->securitypriv, 0,
             sizeof(struct security_priv));
        _init_timer(&(adapter->securitypriv.tkip_timer),
                adapter->pnetdev, r8712_use_tkipkey_handler,
                adapter);
        /* Restore the PMK information to securitypriv structure
         * for the following connection. */
        memcpy(&adapter->securitypriv.PMKIDList[0],
            &backupPMKIDList[0],
            sizeof(struct RT_PMKID_LIST) * NUM_PMKID_CACHE);
        adapter->securitypriv.PMKIDIndex = backupPMKIDIndex;
        adapter->securitypriv.btkip_countermeasure =
                     backupTKIPCountermeasure;
    } else { /*reset values in securitypriv*/
        struct security_priv *psec_priv = &adapter->securitypriv;

        psec_priv->AuthAlgrthm = 0; /*open system*/
        psec_priv->PrivacyAlgrthm = _NO_PRIVACY_;
        psec_priv->PrivacyKeyIndex = 0;
        psec_priv->XGrpPrivacy = _NO_PRIVACY_;
        psec_priv->XGrpKeyid = 1;
        psec_priv->ndisauthtype = Ndis802_11AuthModeOpen;
        psec_priv->ndisencryptstatus = Ndis802_11WEPDisabled;
        psec_priv->wps_phase = false;
    }
}

void r8712_report_sec_ie(struct _adapter *adapter, u8 authmode, u8 *sec_ie)
{
    uint len;
    u8 *buff, *p, i;
    union iwreq_data wrqu;

    buff = NULL;
    if (authmode == _WPA_IE_ID_) {
        buff = _malloc(IW_CUSTOM_MAX);
        if (buff == NULL)
            return;
        memset(buff, 0, IW_CUSTOM_MAX);
        p = buff;
        p += sprintf(p, "ASSOCINFO(ReqIEs=");
        len = sec_ie[1] + 2;
        len =  (len < IW_CUSTOM_MAX) ? len : IW_CUSTOM_MAX;
        for (i = 0; i < len; i++)
            p += sprintf(p, "%02x", sec_ie[i]);
        p += sprintf(p, ")");
        memset(&wrqu, 0, sizeof(wrqu));
        wrqu.data.length = p-buff;
        wrqu.data.length = (wrqu.data.length < IW_CUSTOM_MAX) ?
                   wrqu.data.length : IW_CUSTOM_MAX;
        wireless_send_event(adapter->pnetdev, IWEVCUSTOM, &wrqu, buff);
        kfree(buff);
    }
}