diff --git a/core/rtw_ioctl_set.c b/core/rtw_ioctl_set.c
index 255453b..87e6840 100644
--- a/core/rtw_ioctl_set.c
+++ b/core/rtw_ioctl_set.c
@@ -31,7 +31,7 @@ extern void indicate_wx_scan_complete_event(_adapter *padapter);
 		(addr[4] == 0xff) && (addr[5] == 0xff) )  ? _TRUE : _FALSE \
 )
 
-u8 rtw_validate_bssid(u8 *bssid)
+u8 rtw_validate_bssid(const u8 *bssid)
 {
 	u8 ret = _TRUE;
 
@@ -525,7 +525,7 @@ _func_exit_;
 	
 }
 
-u8 rtw_set_802_11_connect(_adapter* padapter, u8 *bssid, NDIS_802_11_SSID *ssid)
+u8 rtw_set_802_11_connect(_adapter* padapter, const u8 *bssid, NDIS_802_11_SSID *ssid)
 {
 	_irqL irqL;
 	u8 status = _SUCCESS;
diff --git a/core/rtw_sta_mgt.c b/core/rtw_sta_mgt.c
index f03f727..d425120 100644
--- a/core/rtw_sta_mgt.c
+++ b/core/rtw_sta_mgt.c
@@ -685,7 +685,7 @@ _func_exit_;
 }
 
 /* any station allocated can be searched by hash list */
-struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
+struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, const u8 *hwaddr)
 {
 
 	_irqL	 irqL;
@@ -696,7 +696,7 @@ struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr)
 	
 	u32	index;
 
-	u8 *addr;
+	const u8 *addr;
 
 	u8 bc_addr[ETH_ALEN] = {0xff,0xff,0xff,0xff,0xff,0xff};
 
diff --git a/include/osdep_service.h b/include/osdep_service.h
index 76026b9..25809e4 100644
--- a/include/osdep_service.h
+++ b/include/osdep_service.h
@@ -255,8 +255,8 @@ void _rtw_usb_buffer_free(struct usb_device *dev, size_t size, void *addr, dma_a
 extern void*	rtw_malloc2d(int h, int w, int size);
 extern void	rtw_mfree2d(void *pbuf, int h, int w, int size);
 
-extern void	_rtw_memcpy(void* dec, void* sour, u32 sz);
-extern int	_rtw_memcmp(void *dst, void *src, u32 sz);
+extern void	_rtw_memcpy(void* dec, const void* sour, u32 sz);
+extern int	_rtw_memcmp(const void *dst, const void *src, u32 sz);
 extern void	_rtw_memset(void *pbuf, int c, u32 sz);
 
 extern void	_rtw_init_listhead(_list *list);
diff --git a/include/rtw_ioctl_set.h b/include/rtw_ioctl_set.h
index da08376..10b3507 100644
--- a/include/rtw_ioctl_set.h
+++ b/include/rtw_ioctl_set.h
@@ -60,10 +60,10 @@ u8 rtw_set_802_11_bssid_list_scan(_adapter* padapter, NDIS_802_11_SSID *pssid, i
 u8 rtw_set_802_11_infrastructure_mode(_adapter * padapter, NDIS_802_11_NETWORK_INFRASTRUCTURE networktype);
 u8 rtw_set_802_11_remove_wep(_adapter * padapter, u32 keyindex);
 u8 rtw_set_802_11_ssid(_adapter * padapter, NDIS_802_11_SSID * ssid);
-u8 rtw_set_802_11_connect(_adapter* padapter, u8 *bssid, NDIS_802_11_SSID *ssid);
+u8 rtw_set_802_11_connect(_adapter* padapter, const u8 *bssid, NDIS_802_11_SSID *ssid);
 u8 rtw_set_802_11_remove_key(_adapter * padapter, NDIS_802_11_REMOVE_KEY * key);
 
-u8 rtw_validate_bssid(u8 *bssid);
+u8 rtw_validate_bssid(const u8 *bssid);
 u8 rtw_validate_ssid(NDIS_802_11_SSID *ssid);
 
 u16 rtw_get_cur_max_rate(_adapter *adapter);
diff --git a/include/sta_info.h b/include/sta_info.h
index 15964d7..553d5ab 100644
--- a/include/sta_info.h
+++ b/include/sta_info.h
@@ -443,7 +443,7 @@ struct	sta_priv {
 };
 
 
-__inline static u32 wifi_mac_hash(u8 *mac)
+__inline static u32 wifi_mac_hash(const u8 *mac)
 {
         u32 x;
 
@@ -471,7 +471,7 @@ struct sta_info *rtw_get_stainfo_by_offset(struct sta_priv *stapriv, int offset)
 extern struct sta_info *rtw_alloc_stainfo(struct	sta_priv *pstapriv, u8 *hwaddr);
 extern u32	rtw_free_stainfo(_adapter *padapter , struct sta_info *psta);
 extern void rtw_free_all_stainfo(_adapter *padapter);
-extern struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, u8 *hwaddr);
+extern struct sta_info *rtw_get_stainfo(struct sta_priv *pstapriv, const u8 *hwaddr);
 extern u32 rtw_init_bcmc_stainfo(_adapter* padapter);
 extern struct sta_info* rtw_get_bcmc_stainfo(_adapter* padapter);
 extern u8 rtw_access_ctrl(_adapter *padapter, u8 *mac_addr);
diff --git a/include/wifi.h b/include/wifi.h
index dff95b4..d148ba8 100644
--- a/include/wifi.h
+++ b/include/wifi.h
@@ -431,7 +431,7 @@ enum WIFI_REG_DOMAIN {
 		(addr[4] == 0xff) && (addr[5] == 0xff) )  ? _TRUE : _FALSE \
 )
 
-__inline static int IS_MCAST(unsigned char *da)
+__inline static int IS_MCAST(const unsigned char *da)
 {
 	if ((*da) & 0x01)
 		return _TRUE;
diff --git a/os_dep/linux/ioctl_cfg80211.c b/os_dep/linux/ioctl_cfg80211.c
index 3abcad9..4b6ce41 100644
--- a/os_dep/linux/ioctl_cfg80211.c
+++ b/os_dep/linux/ioctl_cfg80211.c
@@ -2584,7 +2610,7 @@ static int rtw_cfg80211_set_key_mgt(struct security_priv *psecuritypriv, u32 key
 	return 0;
 }
 
-static int rtw_cfg80211_set_wpa_ie(_adapter *padapter, u8 *pie, size_t ielen)
+static int rtw_cfg80211_set_wpa_ie(_adapter *padapter, const u8 *pie, size_t ielen)
 {
 	u8 *buf=NULL, *pos=NULL;	
 	u32 left; 	
diff --git a/os_dep/osdep_service.c b/os_dep/osdep_service.c
index 97a904b..ae46f26 100644
--- a/os_dep/osdep_service.c
+++ b/os_dep/osdep_service.c
@@ -804,7 +804,7 @@ void rtw_mfree2d(void *pbuf, int h, int w, int size)
 	rtw_mfree((u8 *)pbuf, h*sizeof(void*) + w*h*size);
 }
 
-void _rtw_memcpy(void* dst, void* src, u32 sz)
+void _rtw_memcpy(void* dst, const void* src, u32 sz)
 {
 
 #if defined (PLATFORM_LINUX)|| defined (PLATFORM_FREEBSD)
@@ -821,7 +821,7 @@ void _rtw_memcpy(void* dst, void* src, u32 sz)
 
 }
 
-int	_rtw_memcmp(void *dst, void *src, u32 sz)
+int	_rtw_memcmp(const void *dst, const void *src, u32 sz)
 {
 
 #if defined (PLATFORM_LINUX)|| defined (PLATFORM_FREEBSD)