staging/rtl8712/mlme_linux.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /******************************************************************************
0003  * mlme_linux.c
0004  *
0005  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
0006  * Linux device driver for RTL8192SU
0007  *
0008  * Modifications for inclusion into the Linux staging tree are
0009  * Copyright(c) 2010 Larry Finger. All rights reserved.
0010  *
0011  * Contact information:
0012  * WLAN FAE <wlanfae@realtek.com>.
0013  * Larry Finger <Larry.Finger@lwfinger.net>
0014  *
0015  ******************************************************************************/
0016
0017 #define _MLME_OSDEP_C_
0018
0019 #include "osdep_service.h"
0020 #include "drv_types.h"
0021 #include "mlme_osdep.h"
0022
0023 static void sitesurvey_ctrl_handler(struct timer_list *t)
0024 {
0025     struct _adapter *adapter =
0026         from_timer(adapter, t,
0027                mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer);
0028
0029     _r8712_sitesurvey_ctrl_handler(adapter);
0030     mod_timer(&adapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
0031           jiffies + msecs_to_jiffies(3000));
0032 }
0033
0034 static void join_timeout_handler (struct timer_list *t)
0035 {
0036     struct _adapter *adapter =
0037         from_timer(adapter, t, mlmepriv.assoc_timer);
0038
0039     _r8712_join_timeout_handler(adapter);
0040 }
0041
0042 static void _scan_timeout_handler (struct timer_list *t)
0043 {
0044     struct _adapter *adapter =
0045         from_timer(adapter, t, mlmepriv.scan_to_timer);
0046
0047     r8712_scan_timeout_handler(adapter);
0048 }
0049
0050 static void dhcp_timeout_handler (struct timer_list *t)
0051 {
0052     struct _adapter *adapter =
0053         from_timer(adapter, t, mlmepriv.dhcp_timer);
0054
0055     _r8712_dhcp_timeout_handler(adapter);
0056 }
0057
0058 static void wdg_timeout_handler (struct timer_list *t)
0059 {
0060     struct _adapter *adapter =
0061         from_timer(adapter, t, mlmepriv.wdg_timer);
0062
0063     r8712_wdg_wk_cmd(adapter);
0064
0065     mod_timer(&adapter->mlmepriv.wdg_timer,
0066           jiffies + msecs_to_jiffies(2000));
0067 }
0068
0069 void r8712_init_mlme_timer(struct _adapter *adapter)
0070 {
0071     struct  mlme_priv *mlmepriv = &adapter->mlmepriv;
0072
0073     timer_setup(&mlmepriv->assoc_timer, join_timeout_handler, 0);
0074     timer_setup(&mlmepriv->sitesurveyctrl.sitesurvey_ctrl_timer,
0075             sitesurvey_ctrl_handler, 0);
0076     timer_setup(&mlmepriv->scan_to_timer, _scan_timeout_handler, 0);
0077     timer_setup(&mlmepriv->dhcp_timer, dhcp_timeout_handler, 0);
0078     timer_setup(&mlmepriv->wdg_timer, wdg_timeout_handler, 0);
0079 }
0080
0081 void r8712_os_indicate_connect(struct _adapter *adapter)
0082 {
0083     r8712_indicate_wx_assoc_event(adapter);
0084     netif_carrier_on(adapter->pnetdev);
0085 }
0086
0087 static struct RT_PMKID_LIST   backupPMKIDList[NUM_PMKID_CACHE];
0088 void r8712_os_indicate_disconnect(struct _adapter *adapter)
0089 {
0090     u8 backupPMKIDIndex = 0;
0091     u8 backupTKIPCountermeasure = 0x00;
0092
0093     r8712_indicate_wx_disassoc_event(adapter);
0094     netif_carrier_off(adapter->pnetdev);
0095     if (adapter->securitypriv.AuthAlgrthm == 2) { /*/802.1x*/
0096         /* We have to backup the PMK information for WiFi PMK Caching
0097          * test item. Backup the btkip_countermeasure information.
0098          * When the countermeasure is trigger, the driver have to
0099          * disconnect with AP for 60 seconds.
0100          */
0101
0102         memcpy(&backupPMKIDList[0],
0103                &adapter->securitypriv.PMKIDList[0],
0104                sizeof(struct RT_PMKID_LIST) * NUM_PMKID_CACHE);
0105         backupPMKIDIndex = adapter->securitypriv.PMKIDIndex;
0106         backupTKIPCountermeasure =
0107             adapter->securitypriv.btkip_countermeasure;
0108         memset((unsigned char *)&adapter->securitypriv, 0,
0109                sizeof(struct security_priv));
0110         timer_setup(&adapter->securitypriv.tkip_timer,
0111                 r8712_use_tkipkey_handler, 0);
0112         /* Restore the PMK information to securitypriv structure
0113          * for the following connection.
0114          */
0115         memcpy(&adapter->securitypriv.PMKIDList[0],
0116                &backupPMKIDList[0],
0117                sizeof(struct RT_PMKID_LIST) * NUM_PMKID_CACHE);
0118         adapter->securitypriv.PMKIDIndex = backupPMKIDIndex;
0119         adapter->securitypriv.btkip_countermeasure =
0120                      backupTKIPCountermeasure;
0121     } else { /*reset values in securitypriv*/
0122         struct security_priv *sec_priv = &adapter->securitypriv;
0123
0124         sec_priv->AuthAlgrthm = 0; /*open system*/
0125         sec_priv->PrivacyAlgrthm = _NO_PRIVACY_;
0126         sec_priv->PrivacyKeyIndex = 0;
0127         sec_priv->XGrpPrivacy = _NO_PRIVACY_;
0128         sec_priv->XGrpKeyid = 1;
0129         sec_priv->ndisauthtype = Ndis802_11AuthModeOpen;
0130         sec_priv->ndisencryptstatus = Ndis802_11WEPDisabled;
0131         sec_priv->wps_phase = false;
0132     }
0133 }
0134
0135 void r8712_report_sec_ie(struct _adapter *adapter, u8 authmode, u8 *sec_ie)
0136 {
0137     uint len;
0138     u8 *buff, *p, i;
0139     union iwreq_data wrqu;
0140
0141     buff = NULL;
0142     if (authmode == _WPA_IE_ID_) {
0143         buff = kzalloc(IW_CUSTOM_MAX, GFP_ATOMIC);
0144         if (!buff)
0145             return;
0146         p = buff;
0147         p += sprintf(p, "ASSOCINFO(ReqIEs=");
0148         len = sec_ie[1] + 2;
0149         len =  (len < IW_CUSTOM_MAX) ? len : IW_CUSTOM_MAX;
0150         for (i = 0; i < len; i++)
0151             p += sprintf(p, "%02x", sec_ie[i]);
0152         p += sprintf(p, ")");
0153         memset(&wrqu, 0, sizeof(wrqu));
0154         wrqu.data.length = p - buff;
0155         wrqu.data.length = (wrqu.data.length < IW_CUSTOM_MAX) ?
0156                    wrqu.data.length : IW_CUSTOM_MAX;
0157         wireless_send_event(adapter->pnetdev, IWEVCUSTOM, &wrqu, buff);
0158         kfree(buff);
0159     }
0160 }