[Milhouse]

As for a fix I'm sure it will come eventually, problem is the driver isn't mainline so it depends on someone releasing a 3.18 update (the current source doesn't seem particularly active in terms of maintenance so I may try and find an alternative).

I've worked out a patch for the RTL8812AU driver which will be in the next build, it's pretty straight forward and hopefully it will work.

Between kernel 3.12.x and 3.17.x, the cfg80211_rx_mgmt function is defined as:

Code:

/**
* cfg80211_rx_mgmt - notification of received, unprocessed management frame
* @wdev: wireless device receiving the frame
* @freq: Frequency on which the frame was received in MHz
* @sig_dbm: signal strength in mBm, or 0 if unknown
* @buf: Management frame (header + body)
* @len: length of the frame data
* @flags: flags, as defined in enum nl80211_rxmgmt_flags
* @gfp: context flags
*
* This function is called whenever an Action frame is received for a station
* mode interface, but is not processed in kernel.
*
* Return: %true if a user space application has registered for this frame.
* For action frames, that makes it responsible for rejecting unrecognized
* action frames; %false otherwise, in which case for action frames the
* driver is responsible for rejecting the frame.
*/
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
                      const u8 *buf, size_t len, u32 flags, gfp_t gfp);

but with kernel 3.18, the @gfp argument has been dropped:

Code:

/**
* cfg80211_rx_mgmt - notification of received, unprocessed management frame
* @wdev: wireless device receiving the frame
* @freq: Frequency on which the frame was received in MHz
* @sig_dbm: signal strength in mBm, or 0 if unknown
* @buf: Management frame (header + body)
* @len: length of the frame data
* @flags: flags, as defined in enum nl80211_rxmgmt_flags
*
* This function is called whenever an Action frame is received for a station
* mode interface, but is not processed in kernel.
*
* Return: %true if a user space application has registered for this frame.
* For action frames, that makes it responsible for rejecting unrecognized
* action frames; %false otherwise, in which case for action frames the
* driver is responsible for rejecting the frame.
*/
bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm,
                      const u8 *buf, size_t len, u32 flags);

The following patch fixes the RTL8812AU driver:

Code:

diff --git a/include/ioctl_cfg80211.h b/include/ioctl_cfg80211.h
index 08357ac..8e85dc9 100644
--- a/include/ioctl_cfg80211.h
+++ b/include/ioctl_cfg80211.h
@@ -109,9 +109,12 @@ bool rtw_cfg80211_pwr_mgmt(_adapter *adapter);
   #define rtw_cfg80211_rx_mgmt(adapter, freq, sig_dbm, buf, len, gfp) cfg80211_rx_mgmt((adapter)->pnetdev, freq, sig_dbm, buf, len, gfp)
#elif (LINUX_VERSION_CODE < KERNEL_VERSION(3,12,0))
   #define rtw_cfg80211_rx_mgmt(adapter, freq, sig_dbm, buf, len, gfp) cfg80211_rx_mgmt((adapter)->rtw_wdev, freq, sig_dbm, buf, len, gfp)
-#else
+#elif (LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0))
   // 3.12 added a flags argument which is just set to zero
   #define rtw_cfg80211_rx_mgmt(adapter, freq, sig_dbm, buf, len, gfp) cfg80211_rx_mgmt((adapter)->rtw_wdev, freq, sig_dbm, buf, len, 0, gfp)
+#else
+  // 3.18 dropped the gfp argument
+  #define rtw_cfg80211_rx_mgmt(adapter, freq, sig_dbm, buf, len, gfp) cfg80211_rx_mgmt((adapter)->rtw_wdev, freq, sig_dbm, buf, len, 0)
#endif

#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0))  && !defined(COMPAT_KERNEL_RELEASE)