kernel/drivers/staging/rtl8723au/os_dep/mlme_linux.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  ******************************************************************************/
  15
  16 #define _MLME_OSDEP_C_
  17
  18 #include <osdep_service.h>
  19 #include <drv_types.h>
  20 #include <mlme_osdep.h>
  21
  22 static struct rt_pmkid_list backupPMKIDList[NUM_PMKID_CACHE];
  23
  24 void rtw_reset_securitypriv23a(struct rtw_adapter *adapter)
  25 {
  26         u8      backupPMKIDIndex = 0;
  27         u8      backupTKIPCountermeasure = 0x00;
  28         unsigned long backupTKIPcountermeasure_time = 0;
  29
  30         if (adapter->securitypriv.dot11AuthAlgrthm ==
  31             dot11AuthAlgrthm_8021X) { /* 802.1x */
  32                 /*  We have to backup the PMK information for WiFi PMK
  33                  *  Caching test item.
  34                  *  Backup the btkip_countermeasure information.
  35                  *  When the countermeasure is trigger, the driver have to
  36                  *  disconnect with AP for 60 seconds.
  37                  */
  38                 memcpy(&backupPMKIDList[0], &adapter->securitypriv.PMKIDList[0],
  39                        sizeof(struct rt_pmkid_list) * NUM_PMKID_CACHE);
  40                 backupPMKIDIndex = adapter->securitypriv.PMKIDIndex;
  41                 backupTKIPCountermeasure = adapter->securitypriv.btkip_countermeasure;
  42                 backupTKIPcountermeasure_time = adapter->securitypriv.btkip_countermeasure_time;
  43
  44                 memset((unsigned char *)&adapter->securitypriv, 0,
  45                        sizeof (struct security_priv));
  46                 /* Restore the PMK information to securitypriv structure
  47                  * for the following connection.
  48                  */
  49                 memcpy(&adapter->securitypriv.PMKIDList[0], &backupPMKIDList[0],
  50                        sizeof(struct rt_pmkid_list) * NUM_PMKID_CACHE);
  51                 adapter->securitypriv.PMKIDIndex = backupPMKIDIndex;
  52                 adapter->securitypriv.btkip_countermeasure = backupTKIPCountermeasure;
  53                 adapter->securitypriv.btkip_countermeasure_time = backupTKIPcountermeasure_time;
  54
  55                 adapter->securitypriv.ndisauthtype = Ndis802_11AuthModeOpen;
  56                 adapter->securitypriv.ndisencryptstatus = Ndis802_11WEPDisabled;
  57         } else {  /* reset values in securitypriv */
  58                 struct security_priv *psec_priv = &adapter->securitypriv;
  59
  60                 /* open system */
  61                 psec_priv->dot11AuthAlgrthm = dot11AuthAlgrthm_Open;
  62                 psec_priv->dot11PrivacyAlgrthm = 0;
  63                 psec_priv->dot11PrivacyKeyIndex = 0;
  64
  65                 psec_priv->dot118021XGrpPrivacy = 0;
  66                 psec_priv->dot118021XGrpKeyid = 1;
  67
  68                 psec_priv->ndisauthtype = Ndis802_11AuthModeOpen;
  69                 psec_priv->ndisencryptstatus = Ndis802_11WEPDisabled;
  70         }
  71 }
  72
  73 void rtw_os_indicate_disconnect23a(struct rtw_adapter *adapter)
  74 {
  75         /* Do it first for tx broadcast pkt after disconnection issue! */
  76         netif_carrier_off(adapter->pnetdev);
  77
  78         rtw_cfg80211_indicate_disconnect(adapter);
  79
  80         rtw_reset_securitypriv23a(adapter);
  81 }