New driver version 5.8.1

[brektrou]

I got this driver from here

Clone the driver:
git clone -b 5.8.1 https://github.com/brektrou/rtl8821CU.git rtl8821CU-5.8.1

Build & install with make:
cd rtl8821CU-5.8.1
make
sudo make install

Or build & install with dkms:
sudo cp -rvf rtl8821CU-5.8.1 /usr/src
sudo dkms add rtl8821CU/5.8.1
sudo dkms install rtl8821CU/5.8.1 -k $(uname -r)

Driver info & changelog

Commits

[birdofprey]

its so big 牛逼

[kylroma]

Thank you! I've installed the driver in manjaro. I couldn't do this with the driver version 5.4.1.

[igorferret]

hi.... it works fine to navigate, but i cant packet injection.... packet injection not works.... can you help me?

I got this driver from here

Clone the driver:
git clone -b 5.8.1 https://github.com/brektrou/rtl8821CU.git rtl8821CU-5.8.1

Build & install with make:
cd rtl8821CU-5.8.1
make
sudo make install

Or build & install with dkms:
sudo cp -rvf rtl8821CU-5.8.1 /usr/src
sudo dkms add rtl8821CU/5.8.1
sudo dkms install rtl8821CU/5.8.1 -k $(uname -r)

Driver info & changelog

[Sirojio]

I have this problem:

sudo dkms install rtl8821CU/5.8.1 -k $(uname -r)

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area...
'make' KVER=5.7.0-kali1-amd64....(bad exit status: 2)
Error! Bad return status for module build on kernel: 5.7.0-kali1-amd64 (x86_64)
Consult /var/lib/dkms/rtl8821CU/5.8.1/build/make.log for more information.

Kali on VirtualBox
root@kali:# grep VERSION /etc/os-release
VERSION="2020.3"
VERSION_ID="2020.3"
VERSION_CODENAME="kali-rolling"
root@kali:# uname -v
#1 SMP Debian 5.7.6-1kali2 (2020-07-01)
root@kali:~# uname -r
5.7.0-kali1-amd64

How can I decide this problem?

[Sirojio]

I got this driver from here
Clone the driver:
git clone -b 5.8.1 https://github.com/brektrou/rtl8821CU.git rtl8821CU-5.8.1
Build & install with make:
cd rtl8821CU-5.8.1
make
sudo make install
Or build & install with dkms:
sudo cp -rvf rtl8821CU-5.8.1 /usr/src
sudo dkms add rtl8821CU/5.8.1
sudo dkms install rtl8821CU/5.8.1 -k $(uname -r)
Driver info & changelog

Could you help?

[devbharat]

Hey! Does the driver+firmware+module support packet injection? I can get the monitor mode to work, but I can't seem to inject packets.

[OfflineLubuntu]

I'm a bit new to cloning stuff like git (I tried before with 8821au as a premade ZIP but that was wrong since mine is C not A) so I'm going to try and do that with GitHub desktop since my only internet connection is with windows and the whole point of doing the DWA-171 is to get internet on my lubuntu 32bit =/

once I copy and paste the folder (guess never zipped but it's small so who cares) then I guess I can follow steps from there, I hope...

[luckylittle]

@brektrou I am unable to compile it. Below are the details:

• Red Hat Enterprise Linux release 8.3 (Ootpa)
• Kernel 4.18.0-240.1.1.el8_3.x86_64
• Error:

make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/4.18.0-240.1.1.el8_3.x86_64/build M=/home/USER/Downloads/WiFi/rtl8821CU-5.8.1  modules
make[1]: Entering directory '/usr/src/kernels/4.18.0-240.1.1.el8_3.x86_64'
  CC [M]  /home/USER/Downloads/WiFi/rtl8821CU-5.8.1/os_dep/linux/rtw_android.o
/home/USER/Downloads/WiFi/rtl8821CU-5.8.1/os_dep/linux/rtw_android.c: In function ‘rtw_android_priv_cmd’:
/home/USER/Downloads/WiFi/rtl8821CU-5.8.1/os_dep/linux/rtw_android.c:669:62: error: macro "access_ok" passed 3 arguments, but takes just 2
  if (!access_ok(VERIFY_READ, priv_cmd.buf, priv_cmd.total_len)) {
                                                              ^
/home/USER/Downloads/WiFi/rtl8821CU-5.8.1/os_dep/linux/rtw_android.c:669:7: error: ‘access_ok’ undeclared (first use in this function)
  if (!access_ok(VERIFY_READ, priv_cmd.buf, priv_cmd.total_len)) {
       ^~~~~~~~~
/home/USER/Downloads/WiFi/rtl8821CU-5.8.1/os_dep/linux/rtw_android.c:669:7: note: each undeclared identifier is reported only once for each function it appears in
make[2]: *** [scripts/Makefile.build:316: /home/USER/Downloads/WiFi/rtl8821CU-5.8.1/os_dep/linux/rtw_android.o] Error 1
make[1]: *** [Makefile:1544: _module_/home/USER/Downloads/WiFi/rtl8821CU-5.8.1] Error 2
make[1]: Leaving directory '/usr/src/kernels/4.18.0-240.1.1.el8_3.x86_64'
make: *** [Makefile:2327: modules] Error 2

UPDATE: I was able to fix that on the line #666:
From: #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0))
To: #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 18, 0))

[keil555]

It works! Thanks!

[J-Rojas]

I'm getting this error with kernel 5.13

rtl8821CU-5.8.1/os_dep/linux/recv_linux.c:358:55: error: ‘GRO_DROP’ undeclared (first use in this function)
  358 |    if (rtw_napi_gro_receive(&padapter->napi, pskb) != GRO_DROP)
      |                                                       ^~~~~~~~

[iamhere2]

@J-Rojas Have the same problem.
Found appropriate patch here: RinCat/RTL88x2BU-Linux-Driver#81

And for the next compilation problem:
gordboy/rtl8812au-5.9.3.2#10

And it now works!! :)

[mozeus14]

Building module:
cleaning build area...
'make' KVER=5.18.0-kali5-amd64.........................(bad exit status: 2)
Error! Bad return status for module build on kernel: 5.18.0-kali5-amd64 (x86_64)
Consult /var/lib/dkms/rtl8821CU/5.8.1/build/make.log for more information.