802.11p-on-linux

Clone and compile the Linux kernel
==================================
# Use some extra directory for all the components needed
cd c2c/

# Clone the repository (this will take a *few minutes*)
c2c$ git clone https://github.com/CTU-IIG/802.11p-linux.git
c2c$ cd 802.11p-linux

# Checkout particular branch
c2c/802.11p-linux$ git checkout its-g5_v3

# Prepare the folder for compilation
c2c/802.11p-linux$ mkdir _build

# Use the appropriate defconfig
c2c/802.11p-linux$ make O=_build x86_64_defconfig

# Configure the kernel if necessary (enable MAC80211_OCB_DEBUG, CONFIG_MAC80211_STA_DEBUG etc.)
c2c/802.11p-linux$ cd _build
c2c/802.11p-linux/_build$ make menuconfig

# Run the compilation
c2c/802.11p-linux/_build$ make -j4

# Install the modules and the kernel
c2c/802.11p-linux/_build$ sudo make modules_install
c2c/802.11p-linux/_build$ sudo make install


iw -- wifi configuration tool
=============================
# Use some extra directory for all the components needed
cd c2c/

# Install libnl development files
c2c$ sudo apt-get install libnl-dev

# Clone the official iw repository
c2c$ git clone https://github.com/CTU-IIG/802.11p-iw.git
c2c$ cd 802.11p-iw
c2c/802.11p-iw$ git checkout its-g5_v3

# Build it
c2c/802.11p-iw$ make

# Install it
c2c/802.11p-iw$ sudo PREFIX=/ make install

# Test it
c2c/802.11p-iw$ /sbin/iw | grep -i ocb
	dev <devname> ocb leave
	dev <devname> ocb join <freq in MHz> <5MHZ|10MHZ> [fixed-freq]


wireless-regdb -- regulatory information
========================================
# Use some extra directory for all the components needed
cd c2c/

# Install some extra packages
c2c$ sudo apt-get install python-m2crypto

# Clone the repository
c2c$ git clone https://github.com/CTU-IIG/802.11p-wireless-regdb.git
c2c$ cd 802.11p-wireless-regdb
c2c/802.11p-wireless-regdb$ git checkout its-g5_v1

c2c/802.11p-wireless-regdb$ make
c2c/802.11p-wireless-regdb$ sudo PREFIX=/ make install


CRDA -- Central Regulatory Domain Agent
=======================================
# Use some extra directory for all the components needed
cd c2c/

# Install some extra packages
c2c$ sudo apt-get install python-m2crypto
c2c$ sudo apt-get install libgcrypt11-dev

# Clone the repository
c2c$ git clone https://github.com/CTU-IIG/802.11p-crda.git
c2c$ cd 802.11p-crda
c2c/802.11p-crda$ git checkout its-g5_v1

# We are using our own key for regulatory.bin and CRDA
c2c/802.11p-crda$ cp /lib/crda/pubkeys/username.key.pub.pem pubkeys/

# Compile + install it
c2c/802.11p-crda$ make
c2c/802.11p-crda$ sudo PREFIX=/ REG_BIN=/lib/crda/regulatory.bin make install

# Test CRDA + generated regulatory.bin
c2c/802.11p-crda$ sudo /sbin/regdbdump ../802.11p-wireless-regdb/regulatory.bin | grep -i ocb
country 00: invalid
	(5850.000 - 5925.000 @ 20.000), (20.00), NO-CCK, OCB-ONLY


# Right now is probably the right time reboot
# the computer into the newly compiled kernel


Configure OCB interface
=======================
sudo iw reg set DE
sudo ip link set wlan0 down
sudo iw dev wlan0 set type ocb
sudo ip link set wlan0 up
sudo iw dev wlan0 ocb join 5890 10MHZ

# Get the interface statistics
ip -s link show dev wlan0

Hi,
Thank you very much for the detailed instruction.
I have the same problem as @apaixao when using ath5k (Unex DCMA-86P2 with Atheros AR5414A-B2B)
$iw dev wlan0 set type ocb
command failed: Operation not supported (-95)
Does anyone know how to resolve the problem? If it doesn't work on ath5k, can you suggest an alternative way to enable 802.11p on ath5k.
Thank you very much.

Hi,
When I do $iw dev wlan0 set type ocb the operation is ok but at sudo ip link set wlan0 up I get RTNETLINK answers: Operation not supported
Does anyone know how to solve this ?
Thank

Hi.
Could i follow this procedure on openwrt installed on a raspberry?
Thank you for your reply.

Hello,
what is the name of the board that you have used ?

Hi,
Anyone solved the old issue "iw dev wlan0 set type ocb command failed: Operation not supported (-95)" ?

I am having the similar problem i.e. when i do ocb join at 5890Mhz, i get a "command failed: invalid argument (-22)" error. Anyone managed to solve this issue?

Anyone get this working on Linux Kernel 5.x?

Anyone get this working on Linux Kernel 5.x?

I did it. You just have to apply the changes from:

CTU-IIG/802.11p-linux@bf45e01

what about on kernel 5.4.x? Anyone has been able to put it working ?

Hello, has somebody tried to make it work on ath10k driver?
Thank you in advance.

what about on kernel 5.4.x? Anyone has been able to put it working ?

This guide works for me © on Debian, with Linux 5.6 and ath9k.

If you want to patch Linux < 5.6, try the patches in this revision.

In the repository linked above, you can also find Ansible roles to set things up in an automated fashion.

Hello, has somebody tried to make it work on ath10k driver?

I have been just searching for this as well. Maybe (unlikely), I find the time to dig into ath10, but I'm really not into kernel development at all.

Also, It would be great if someone would drop a note here once he or she finds useful resources.

Update: I just pushed the work in progress' status regarding patching ath10k for IEEE 802.11p. I am not a kernel dev, so if anyone with expertise wants to join in… :)