rtl8821/rtl8812 linux kernel driver Wireless Dual-Band USB Adapter

For issues with the hardware and driver see at the end of this readme.
If one USB-ID is missing, please mail me.

NEW:
Added firmware files from Asus named :
AWUS036AC from 20150212

Added new module params, taken form rtlwifi driver
see with modinfo rtl8821au.ko
swenc: Set to 1 for software crypto
ips: Set to 0 to not use link power save
debug: Set debug level (0-5)

currently ips is/may be disabled

In 2T2R Modes they are some issues with the bandwith.
Output form iperf3
used with Xioami MiWifi : Wifi Chip MT7612E
[ 4] 0.00-10.00 sec 113 MBytes 94.5 Mbits/sec 0 sender
[ 4] 0.00-10.00 sec 112 MBytes 94.2 Mbits/sec receiver
used with Edimax BR-6208AC : Wifi Chip RTL8812AE
[ 4] 0.00-10.00 sec 17.3 MBytes 14.5 Mbits/sec 0 sender
[ 4] 0.00-10.00 sec 17.0 MBytes 14.2 Mbits/sec receiver

Maybe I test this further, if I have time. tough

for building type
make

for load the driver
sudo insmod rtl8821au.ko

You need to install the needed fw with
sudo make installfw

If you need to crosscompile use
ARCH= CROSS_COMPILE= KSRC=
while calling
make

i.e.
make ARCH="mips" CROSS_COMPILE=mipsel-softfloat-linux-uclibc- KSRC=/home/user/openwrt/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_rt305x/linux-3.18.7/ modules

This driver is based Edimax Linux driver
EW-7822UAC_Linux_driver_v1.0.1.6.zip
and heavently reworked

• D-Link DWA 171
• Digitus Wirelss AC
• TP-Link T4U AC 1200
• Linksys WUSB 6300

with kernel 4.2 and up, lower kernel down to 3.10 will work too.

• Currently driver works with old wireless extension only
• Support for 'iw' only ap and sta modes, no monitor mode !!!

• With low traffic (150kBit/s), the driver will go into low power mode. Currently maybe fixed.
• All USB3 devices will not work in USB3 (XHCI) mode.

EHCI mode on USB3 ports

Every USB3 port consists of a XHCI and EHCI controller. The RTL8812AU device connects only to the EHCI controller.
And I don't know why. this in an HW issues.
You can see this via lsusb or usbview.

• more checkpatch fixes, code rewriting
• more adjustments for rtlwifi
• regulation fix for 2.4G/5G band (errors currently disabled)
• move intoi to rtlwifi, going upstream

Hans Ulli Kroll ulli.kroll@googlemail.com