Realtek wifi adapter

From: Chris Ward
Date: Sun Oct 28 2018 - 05:53:35 EST

Does anyone want to add https://www.amazon.co.uk/gp/product/B07C4JQZSP/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1 to the set of modules built with the Linux kernel ?

I recently bought one of these. It came with source code for a Linux kernel driver, but it didn't work with the latest OpenSuSE Tumbleweed kernel, so I developed a patch (attached) to fix it. OpenSuSE Tumbleweed is only a few weeks behind the kernel.org 'latest', so shouldn't be too hard to integrate with the bleeding edge kernel.

You can take my patch as GPL2 or later, and I presume the RealTek-supplied code is GPL2; it is in the package from Amazon, or you can email me (tjcw at cantab.net) if you want a copy from me.

--
Chris Ward

diff --git a/LICENSE b/LICENSE
deleted file mode 100644
index 7a8e8ab..0000000
--- a/LICENSE
+++ /dev/null
@@ -1,340 +0,0 @@
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diff --git a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/hal/phydm/phydm_interface.c b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/hal/phydm/phydm_interface.c
index 9d67264..d3684d8 100644
--- a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/hal/phydm/phydm_interface.c
+++ b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/hal/phydm/phydm_interface.c
@@ -564,7 +564,7 @@ odm_set_timer(
#if (DM_ODM_SUPPORT_TYPE & ODM_AP)
mod_timer(p_timer, jiffies + RTL_MILISECONDS_TO_JIFFIES(ms_delay));
#elif (DM_ODM_SUPPORT_TYPE & ODM_CE)
- _set_timer(p_timer, ms_delay); /* ms */
+ _set_timer((_timer *)p_timer, ms_delay); /* ms */
#elif (DM_ODM_SUPPORT_TYPE & ODM_WIN)
struct _ADAPTER *adapter = p_dm_odm->adapter;
PlatformSetTimer(adapter, p_timer, ms_delay);
@@ -588,7 +588,7 @@ odm_initialize_timer(
/*mod_timer(p_timer, jiffies+RTL_MILISECONDS_TO_JIFFIES(10)); */
#elif (DM_ODM_SUPPORT_TYPE & ODM_CE)
struct _ADAPTER *adapter = p_dm_odm->adapter;
- _init_timer(p_timer, adapter->pnetdev, call_back_func, p_dm_odm);
+ _init_timer((_timer *)p_timer, adapter->pnetdev, call_back_func, p_dm_odm);
#elif (DM_ODM_SUPPORT_TYPE & ODM_WIN)
struct _ADAPTER *adapter = p_dm_odm->adapter;
PlatformInitializeTimer(adapter, p_timer, call_back_func, p_context, sz_id);
@@ -605,7 +605,7 @@ odm_cancel_timer(
#if (DM_ODM_SUPPORT_TYPE & ODM_AP)
del_timer(p_timer);
#elif (DM_ODM_SUPPORT_TYPE & ODM_CE)
- _cancel_timer_ex(p_timer);
+ _cancel_timer_ex((_timer *)p_timer);
#elif (DM_ODM_SUPPORT_TYPE & ODM_WIN)
struct _ADAPTER *adapter = p_dm_odm->adapter;
PlatformCancelTimer(adapter, p_timer);
diff --git a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/include/osdep_service.h b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/include/osdep_service.h
index 4d7c1f0..55e9b7e 100644
--- a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/include/osdep_service.h
+++ b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/include/osdep_service.h
@@ -355,7 +355,7 @@ extern void rtw_init_timer(_timer *ptimer, void *padapter, void *pfunc);
__inline static unsigned char _cancel_timer_ex(_timer *ptimer)
{
#ifdef PLATFORM_LINUX
- return del_timer_sync(ptimer);
+ return del_timer_sync((struct timer_list *)ptimer);
#endif
#ifdef PLATFORM_FREEBSD
_cancel_timer(ptimer, 0);
diff --git a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/include/osdep_service_linux.h b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/include/osdep_service_linux.h
index 43fa41f..7379e8d 100644
--- a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/include/osdep_service_linux.h
+++ b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/include/osdep_service_linux.h
@@ -148,7 +148,14 @@ typedef spinlock_t _lock;
#else
typedef struct semaphore _mutex;
#endif
-typedef struct timer_list _timer;
+// tjcw we need timer list to have a 'void *' as well
+struct _timer_entry {
+ struct timer_list t_list ;
+ void (*callback)(unsigned long) ;
+ unsigned long data ;
+} ;
+typedef struct _timer_entry _timer ;
+//typedef struct timer_list _timer;

struct __queue {
struct list_head queue;
@@ -281,22 +288,30 @@ __inline static void rtw_list_delete(_list *plist)

#define RTW_TIMER_HDL_ARGS void *FunctionContext

+// tjcw timer_list does not have 'data' any more. See what breaks without it.
+static void _timer_function(struct timer_list *ptimer)
+{
+ _timer *myptimer = (_timer *) ptimer ;
+ myptimer->callback(myptimer->data) ;
+}
__inline static void _init_timer(_timer *ptimer, _nic_hdl nic_hdl, void *pfunc, void *cntx)
{
/* setup_timer(ptimer, pfunc,(u32)cntx); */
- ptimer->function = pfunc;
- ptimer->data = (unsigned long)cntx;
- init_timer(ptimer);
+// ptimer->t_list.function = pfunc;
+ ptimer->callback=pfunc ;
+ ptimer->data = (unsigned long) cntx;
+// init_timer((struct timer_list *)ptimer);
+ timer_setup((struct timer_list *)ptimer, _timer_function, 0);
}

__inline static void _set_timer(_timer *ptimer, u32 delay_time)
{
- mod_timer(ptimer , (jiffies + (delay_time * HZ / 1000)));
+ mod_timer((struct timer_list *)ptimer , (jiffies + (delay_time * HZ / 1000)));
}

__inline static void _cancel_timer(_timer *ptimer, u8 *bcancelled)
{
- del_timer_sync(ptimer);
+ del_timer_sync((struct timer_list *)ptimer);
*bcancelled = 1;
}

diff --git a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/os_dep/linux/ioctl_cfg80211.c b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/os_dep/linux/ioctl_cfg80211.c
index 6d40a42..c6fbf96 100644
--- a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/os_dep/linux/ioctl_cfg80211.c
+++ b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/os_dep/linux/ioctl_cfg80211.c
@@ -737,24 +737,37 @@ check_bss:
if (rtw_to_roam(padapter) > 0) {
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 39) || defined(COMPAT_KERNEL_RELEASE)
struct wiphy *wiphy = pwdev->wiphy;
+ struct cfg80211_roam_info roam_info = {} ;
struct ieee80211_channel *notify_channel;
u32 freq;
u16 channel = cur_network->network.Configuration.DSConfig;

freq = rtw_ch2freq(channel);
notify_channel = ieee80211_get_channel(wiphy, freq);
- #endif
+ roam_info.channel = notify_channel;
+ roam_info.bssid = cur_network->network.MacAddress;
+ roam_info.req_ie =
+ pmlmepriv->assoc_req+sizeof(struct ieee80211_hdr_3addr)+2;
+ roam_info.req_ie_len =
+ pmlmepriv->assoc_req_len-sizeof(struct ieee80211_hdr_3addr)-2;
+ roam_info.resp_ie =
+ pmlmepriv->assoc_rsp+sizeof(struct ieee80211_hdr_3addr)+6;
+ roam_info.resp_ie_len =
+ pmlmepriv->assoc_rsp_len-sizeof(struct ieee80211_hdr_3addr)-6;
+ #endif

RTW_INFO(FUNC_ADPT_FMT" call cfg80211_roamed\n", FUNC_ADPT_ARG(padapter));
cfg80211_roamed(padapter->pnetdev
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 39) || defined(COMPAT_KERNEL_RELEASE)
- , notify_channel
- #endif
+// , notify_channel
+ , &roam_info
+ #else
, cur_network->network.MacAddress
, pmlmepriv->assoc_req + sizeof(struct rtw_ieee80211_hdr_3addr) + 2
, pmlmepriv->assoc_req_len - sizeof(struct rtw_ieee80211_hdr_3addr) - 2
, pmlmepriv->assoc_rsp + sizeof(struct rtw_ieee80211_hdr_3addr) + 6
, pmlmepriv->assoc_rsp_len - sizeof(struct rtw_ieee80211_hdr_3addr) - 6
+ #endif
, GFP_ATOMIC);
#ifdef CONFIG_RTW_80211R
if ((rtw_to_roam(padapter) > 0) && rtw_chk_ft_flags(padapter, RTW_FT_SUPPORTED))
@@ -1739,7 +1752,8 @@ enum nl80211_iftype {
#endif
static int cfg80211_rtw_change_iface(struct wiphy *wiphy,
struct net_device *ndev,
- enum nl80211_iftype type, u32 *flags,
+ enum nl80211_iftype type,
+// u32 *flags,
struct vif_params *params)
{
enum nl80211_iftype old_type;
@@ -3818,7 +3832,7 @@ static int rtw_cfg80211_add_monitor_if(_adapter *padapter, char *name, struct ne
mon_ndev->type = ARPHRD_IEEE80211_RADIOTAP;
strncpy(mon_ndev->name, name, IFNAMSIZ);
mon_ndev->name[IFNAMSIZ - 1] = 0;
- mon_ndev->destructor = rtw_ndev_destructor;
+ mon_ndev->priv_destructor = rtw_ndev_destructor;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 29))
mon_ndev->netdev_ops = &rtw_cfg80211_monitor_if_ops;
@@ -3884,7 +3898,9 @@ static int
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0))
unsigned char name_assign_type,
#endif
- enum nl80211_iftype type, u32 *flags, struct vif_params *params)
+ enum nl80211_iftype type,
+// u32 *flags,
+ struct vif_params *params)
{
int ret = 0;
struct wireless_dev *wdev = NULL;
@@ -6762,7 +6778,7 @@ static void rtw_cfg80211_preinit_wiphy(_adapter *adapter, struct wiphy *wiphy)
#endif

#if defined(CONFIG_PM) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0))
- wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
+// wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
#ifdef CONFIG_PNO_SUPPORT
wiphy->max_sched_scan_ssids = MAX_PNO_LIST_COUNT;
#endif
diff --git a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/os_dep/osdep_service.c b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/os_dep/osdep_service.c
index 1fbea5d..927e00c 100644
--- a/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/os_dep/osdep_service.c
+++ b/Linux/driver/rtl8821AU_WiFi_linux_v5.2.6.2_23547.20170814_COEX20170206-6760/os_dep/osdep_service.c
@@ -1988,7 +1988,7 @@ static int readFile(struct file *fp, char *buf, int len)

while (sum < len) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0))
- rlen = __vfs_read(fp, buf + sum, len - sum, &fp->f_pos);
+ rlen = kernel_read(fp, buf + sum, len - sum, &fp->f_pos);
#else
rlen = fp->f_op->read(fp, buf + sum, len - sum, &fp->f_pos);
#endif
diff --git a/README.md b/README.md
index ac2d8c8..0dbe5d9 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
# RTL8811AU

-This is the driver for a RealTek WiFi adapter, for OpenSuSE Leap 15.0 Linux. You should be using the leap-15.0 branch, so type 'git checkout leap-15.0' before proceeding.
+This is the driver for a RealTek WiFi adapter, for OpenSuSE Leap 15.0 Linux.

To build this driver, first install the kernel-devel software package through YAST; then go to the Linux/driver/rtl* directory and type 'make'.

-To install the driver, in the same directory type 'sudo make install'.
+To install the driver, in the same directory type 'sudo make install'.
\ No newline at end of file