1 /******************************************************************************
2  * mlme_linux.c
3  *
4  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
5  * Linux device driver for RTL8192SU
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of version 2 of the GNU General Public License as
9  * published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along with
17  * this program; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
19  *
20  * Modifications for inclusion into the Linux staging tree are
21  * Copyright(c) 2010 Larry Finger. All rights reserved.
22  *
23  * Contact information:
24  * WLAN FAE <wlanfae@realtek.com>.
25  * Larry Finger <Larry.Finger@lwfinger.net>
26  *
27  ******************************************************************************/
28 
29 #define _MLME_OSDEP_C_
30 
31 #include "osdep_service.h"
32 #include "drv_types.h"
33 #include "mlme_osdep.h"
34 
sitesurvey_ctrl_handler(void * FunctionContext)35 static void sitesurvey_ctrl_handler(void *FunctionContext)
36 {
37 	struct _adapter *adapter = (struct _adapter *)FunctionContext;
38 
39 	_r8712_sitesurvey_ctrl_handler(adapter);
40 	_set_timer(&adapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
41 		   3000);
42 }
43 
join_timeout_handler(void * FunctionContext)44 static void join_timeout_handler (void *FunctionContext)
45 {
46 	struct _adapter *adapter = (struct _adapter *)FunctionContext;
47 	_r8712_join_timeout_handler(adapter);
48 }
49 
_scan_timeout_handler(void * FunctionContext)50 static void _scan_timeout_handler (void *FunctionContext)
51 {
52 	struct _adapter *adapter = (struct _adapter *)FunctionContext;
53 	r8712_scan_timeout_handler(adapter);
54 }
55 
dhcp_timeout_handler(void * FunctionContext)56 static void dhcp_timeout_handler (void *FunctionContext)
57 {
58 	struct _adapter *adapter = (struct _adapter *)FunctionContext;
59 	_r8712_dhcp_timeout_handler(adapter);
60 }
61 
wdg_timeout_handler(void * FunctionContext)62 static void wdg_timeout_handler (void *FunctionContext)
63 {
64 	struct _adapter *adapter = (struct _adapter *)FunctionContext;
65 
66 	_r8712_wdg_timeout_handler(adapter);
67 
68 	_set_timer(&adapter->mlmepriv.wdg_timer, 2000);
69 }
70 
r8712_init_mlme_timer(struct _adapter * padapter)71 void r8712_init_mlme_timer(struct _adapter *padapter)
72 {
73 	struct	mlme_priv *pmlmepriv = &padapter->mlmepriv;
74 
75 	_init_timer(&(pmlmepriv->assoc_timer), padapter->pnetdev,
76 		    join_timeout_handler, (pmlmepriv->nic_hdl));
77 	_init_timer(&(pmlmepriv->sitesurveyctrl.sitesurvey_ctrl_timer),
78 		    padapter->pnetdev, sitesurvey_ctrl_handler,
79 		    (u8 *)(pmlmepriv->nic_hdl));
80 	_init_timer(&(pmlmepriv->scan_to_timer), padapter->pnetdev,
81 		    _scan_timeout_handler, (pmlmepriv->nic_hdl));
82 	_init_timer(&(pmlmepriv->dhcp_timer), padapter->pnetdev,
83 		    dhcp_timeout_handler, (u8 *)(pmlmepriv->nic_hdl));
84 	_init_timer(&(pmlmepriv->wdg_timer), padapter->pnetdev,
85 		    wdg_timeout_handler, (u8 *)(pmlmepriv->nic_hdl));
86 }
87 
r8712_os_indicate_connect(struct _adapter * adapter)88 void r8712_os_indicate_connect(struct _adapter *adapter)
89 {
90 	r8712_indicate_wx_assoc_event(adapter);
91 	netif_carrier_on(adapter->pnetdev);
92 }
93 
94 static struct RT_PMKID_LIST   backupPMKIDList[NUM_PMKID_CACHE];
r8712_os_indicate_disconnect(struct _adapter * adapter)95 void r8712_os_indicate_disconnect(struct _adapter *adapter)
96 {
97 	u8 backupPMKIDIndex = 0;
98 	u8 backupTKIPCountermeasure = 0x00;
99 
100 	r8712_indicate_wx_disassoc_event(adapter);
101 	netif_carrier_off(adapter->pnetdev);
102 	if (adapter->securitypriv.AuthAlgrthm == 2) { /*/802.1x*/
103 		/* We have to backup the PMK information for WiFi PMK Caching
104 		 * test item. Backup the btkip_countermeasure information.
105 		 * When the countermeasure is trigger, the driver have to
106 		 * disconnect with AP for 60 seconds.
107 		 */
108 
109 		memset(&backupPMKIDList[0], 0x00, sizeof(
110 			struct RT_PMKID_LIST) *	NUM_PMKID_CACHE);
111 		memcpy(&backupPMKIDList[0], &adapter->securitypriv.
112 			PMKIDList[0], sizeof(struct RT_PMKID_LIST) *
113 			NUM_PMKID_CACHE);
114 		backupPMKIDIndex = adapter->securitypriv.PMKIDIndex;
115 		backupTKIPCountermeasure = adapter->securitypriv.
116 					   btkip_countermeasure;
117 		memset((unsigned char *)&adapter->securitypriv, 0,
118 			 sizeof(struct security_priv));
119 		_init_timer(&(adapter->securitypriv.tkip_timer),
120 			    adapter->pnetdev, r8712_use_tkipkey_handler,
121 			    adapter);
122 		/* Restore the PMK information to securitypriv structure
123 		 * for the following connection. */
124 		memcpy(&adapter->securitypriv.PMKIDList[0],
125 			&backupPMKIDList[0],
126 			sizeof(struct RT_PMKID_LIST) * NUM_PMKID_CACHE);
127 		adapter->securitypriv.PMKIDIndex = backupPMKIDIndex;
128 		adapter->securitypriv.btkip_countermeasure =
129 					 backupTKIPCountermeasure;
130 	} else { /*reset values in securitypriv*/
131 		struct security_priv *psec_priv = &adapter->securitypriv;
132 
133 		psec_priv->AuthAlgrthm = 0; /*open system*/
134 		psec_priv->PrivacyAlgrthm = _NO_PRIVACY_;
135 		psec_priv->PrivacyKeyIndex = 0;
136 		psec_priv->XGrpPrivacy = _NO_PRIVACY_;
137 		psec_priv->XGrpKeyid = 1;
138 		psec_priv->ndisauthtype = Ndis802_11AuthModeOpen;
139 		psec_priv->ndisencryptstatus = Ndis802_11WEPDisabled;
140 		psec_priv->wps_phase = false;
141 	}
142 }
143 
r8712_report_sec_ie(struct _adapter * adapter,u8 authmode,u8 * sec_ie)144 void r8712_report_sec_ie(struct _adapter *adapter, u8 authmode, u8 *sec_ie)
145 {
146 	uint len;
147 	u8 *buff, *p, i;
148 	union iwreq_data wrqu;
149 
150 	buff = NULL;
151 	if (authmode == _WPA_IE_ID_) {
152 		buff = _malloc(IW_CUSTOM_MAX);
153 		if (buff == NULL)
154 			return;
155 		memset(buff, 0, IW_CUSTOM_MAX);
156 		p = buff;
157 		p += sprintf(p, "ASSOCINFO(ReqIEs=");
158 		len = sec_ie[1] + 2;
159 		len =  (len < IW_CUSTOM_MAX) ? len : IW_CUSTOM_MAX;
160 		for (i = 0; i < len; i++)
161 			p += sprintf(p, "%02x", sec_ie[i]);
162 		p += sprintf(p, ")");
163 		memset(&wrqu, 0, sizeof(wrqu));
164 		wrqu.data.length = p-buff;
165 		wrqu.data.length = (wrqu.data.length < IW_CUSTOM_MAX) ?
166 				   wrqu.data.length : IW_CUSTOM_MAX;
167 		wireless_send_event(adapter->pnetdev, IWEVCUSTOM, &wrqu, buff);
168 		kfree(buff);
169 	}
170 }
171