1// SPDX-License-Identifier: GPL-2.0
  2/******************************************************************************
  3 * mlme_linux.c
  4 *
  5 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
  6 * Linux device driver for RTL8192SU
  7 *
  8 * Modifications for inclusion into the Linux staging tree are
  9 * Copyright(c) 2010 Larry Finger. All rights reserved.
 10 *
 11 * Contact information:
 12 * WLAN FAE <wlanfae@realtek.com>.
 13 * Larry Finger <Larry.Finger@lwfinger.net>
 14 *
 15 ******************************************************************************/
 16
 17#define _MLME_OSDEP_C_
 18
 19#include "osdep_service.h"
 20#include "drv_types.h"
 21#include "mlme_osdep.h"
 22
 23static void sitesurvey_ctrl_handler(struct timer_list *t)
 24{
 25	struct _adapter *adapter =
 26		from_timer(adapter, t,
 27			   mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer);
 28
 29	_r8712_sitesurvey_ctrl_handler(adapter);
 30	mod_timer(&adapter->mlmepriv.sitesurveyctrl.sitesurvey_ctrl_timer,
 31		  jiffies + msecs_to_jiffies(3000));
 32}
 33
 34static void join_timeout_handler (struct timer_list *t)
 35{
 36	struct _adapter *adapter =
 37		from_timer(adapter, t, mlmepriv.assoc_timer);
 38
 39	_r8712_join_timeout_handler(adapter);
 40}
 41
 42static void _scan_timeout_handler (struct timer_list *t)
 43{
 44	struct _adapter *adapter =
 45		from_timer(adapter, t, mlmepriv.scan_to_timer);
 46
 47	r8712_scan_timeout_handler(adapter);
 48}
 49
 50static void dhcp_timeout_handler (struct timer_list *t)
 51{
 52	struct _adapter *adapter =
 53		from_timer(adapter, t, mlmepriv.dhcp_timer);
 54
 55	_r8712_dhcp_timeout_handler(adapter);
 56}
 57
 58static void wdg_timeout_handler (struct timer_list *t)
 59{
 60	struct _adapter *adapter =
 61		from_timer(adapter, t, mlmepriv.wdg_timer);
 62
 63	r8712_wdg_wk_cmd(adapter);
 64
 65	mod_timer(&adapter->mlmepriv.wdg_timer,
 66		  jiffies + msecs_to_jiffies(2000));
 67}
 68
 69void r8712_init_mlme_timer(struct _adapter *adapter)
 70{
 71	struct	mlme_priv *mlmepriv = &adapter->mlmepriv;
 72
 73	timer_setup(&mlmepriv->assoc_timer, join_timeout_handler, 0);
 74	timer_setup(&mlmepriv->sitesurveyctrl.sitesurvey_ctrl_timer,
 75		    sitesurvey_ctrl_handler, 0);
 76	timer_setup(&mlmepriv->scan_to_timer, _scan_timeout_handler, 0);
 77	timer_setup(&mlmepriv->dhcp_timer, dhcp_timeout_handler, 0);
 78	timer_setup(&mlmepriv->wdg_timer, wdg_timeout_handler, 0);
 79}
 80
 81void r8712_os_indicate_connect(struct _adapter *adapter)
 82{
 83	r8712_indicate_wx_assoc_event(adapter);
 84	netif_carrier_on(adapter->pnetdev);
 85}
 86
 87static struct RT_PMKID_LIST   backupPMKIDList[NUM_PMKID_CACHE];
 88void r8712_os_indicate_disconnect(struct _adapter *adapter)
 89{
 90	u8 backupPMKIDIndex = 0;
 91	u8 backupTKIPCountermeasure = 0x00;
 92
 93	r8712_indicate_wx_disassoc_event(adapter);
 94	netif_carrier_off(adapter->pnetdev);
 95	if (adapter->securitypriv.AuthAlgrthm == 2) { /*/802.1x*/
 96		/* We have to backup the PMK information for WiFi PMK Caching
 97		 * test item. Backup the btkip_countermeasure information.
 98		 * When the countermeasure is trigger, the driver have to
 99		 * disconnect with AP for 60 seconds.
100		 */
101
102		memcpy(&backupPMKIDList[0],
103		       &adapter->securitypriv.PMKIDList[0],
104		       sizeof(struct RT_PMKID_LIST) * NUM_PMKID_CACHE);
105		backupPMKIDIndex = adapter->securitypriv.PMKIDIndex;
106		backupTKIPCountermeasure =
107			adapter->securitypriv.btkip_countermeasure;
108		memset((unsigned char *)&adapter->securitypriv, 0,
109		       sizeof(struct security_priv));
110		timer_setup(&adapter->securitypriv.tkip_timer,
111			    r8712_use_tkipkey_handler, 0);
112		/* Restore the PMK information to securitypriv structure
113		 * for the following connection.
114		 */
115		memcpy(&adapter->securitypriv.PMKIDList[0],
116		       &backupPMKIDList[0],
117		       sizeof(struct RT_PMKID_LIST) * NUM_PMKID_CACHE);
118		adapter->securitypriv.PMKIDIndex = backupPMKIDIndex;
119		adapter->securitypriv.btkip_countermeasure =
120					 backupTKIPCountermeasure;
121	} else { /*reset values in securitypriv*/
122		struct security_priv *sec_priv = &adapter->securitypriv;
123
124		sec_priv->AuthAlgrthm = 0; /*open system*/
125		sec_priv->PrivacyAlgrthm = _NO_PRIVACY_;
126		sec_priv->PrivacyKeyIndex = 0;
127		sec_priv->XGrpPrivacy = _NO_PRIVACY_;
128		sec_priv->XGrpKeyid = 1;
129		sec_priv->ndisauthtype = Ndis802_11AuthModeOpen;
130		sec_priv->ndisencryptstatus = Ndis802_11WEPDisabled;
131		sec_priv->wps_phase = false;
132	}
133}
134
135void r8712_report_sec_ie(struct _adapter *adapter, u8 authmode, u8 *sec_ie)
136{
137	uint len;
138	u8 *buff, *p, i;
139	union iwreq_data wrqu;
140
141	buff = NULL;
142	if (authmode == _WPA_IE_ID_) {
143		buff = kzalloc(IW_CUSTOM_MAX, GFP_ATOMIC);
144		if (!buff)
145			return;
146		p = buff;
147		p += sprintf(p, "ASSOCINFO(ReqIEs=");
148		len = sec_ie[1] + 2;
149		len =  (len < IW_CUSTOM_MAX) ? len : IW_CUSTOM_MAX;
150		for (i = 0; i < len; i++)
151			p += sprintf(p, "%02x", sec_ie[i]);
152		p += sprintf(p, ")");
153		memset(&wrqu, 0, sizeof(wrqu));
154		wrqu.data.length = p - buff;
155		wrqu.data.length = (wrqu.data.length < IW_CUSTOM_MAX) ?
156				   wrqu.data.length : IW_CUSTOM_MAX;
157		wireless_send_event(adapter->pnetdev, IWEVCUSTOM, &wrqu, buff);
158		kfree(buff);
159	}
160}