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| 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 |
I have used Linux kernel 3.18.17. Complete installation went smoothly and everything is the same as what is in the document. Only when I tried to OCB mode sets the reported error card R52Hn (ath9k) :
$iw dev wlan0 set type ocb
command failed: Operation not supported (-95)
$iw dev wlan0 ocb join 5890 10MHZ
command failed: Invalid argument (-22)
any idea?
I'm having similar problems. I can do $iw dev wlan0 set type ocb without problem, but when I do
$iw dev wlan0 ocb join 5890 10MHZ
I get the command failed: Invalid argument (-22) error. I have three PC Engines APU boards with Atheros r9280 NICs, and on one everything works fine. Even doing ocb join. However, on the other 2 I get stuck at the (-22) error message.
On the working machine I get the following two messages when typing dmesg:
[ 5.239890] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 5.270494] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
On the two non-working machines the card never becomes ready.
[ 5.239890] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Also, on the non-working machines I get the following warning:
[ 69.795312] WARNING: CPU: 1 PID: 0 at ../net/mac80211/ocb.c:66 ieee80211_ocb_rx_no_sta+0x134/0x140()
[ 69.795319] Modules linked in:
[ 69.795335] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.18.0+ #2
[ 69.795342] Hardware name: PC Engines APU/APU, BIOS 4.0 09/08/2014
[ 69.795350] ffffffff81ca53b8 ffff88011ed03bf8 ffffffff818cc472 0000000000040400
[ 69.795360] 0000000000000000 ffff88011ed03c38 ffffffff8104ecb5 0000000000000000
[ 69.795370] ffff880037834880 ffff8800dab984ca ffff8800378f8660 ffff880119bcfd00
[ 69.795380] Call Trace:
[ 69.795388] <IRQ> [<ffffffff818cc472>] dump_stack+0x45/0x57
[ 69.795409] [<ffffffff8104ecb5>] warn_slowpath_common+0x85/0xc0
[ 69.795419] [<ffffffff8104ed95>] warn_slowpath_null+0x15/0x20
[ 69.795431] [<ffffffff818bbb64>] ieee80211_ocb_rx_no_sta+0x134/0x140
[ 69.795442] [<ffffffff818910c6>] ieee80211_prepare_and_rx_handle+0x866/0xaf0
[ 69.795453] [<ffffffff816f228e>] ? build_skb+0x2e/0x130
[ 69.795462] [<ffffffff8189192e>] ieee80211_rx+0x5de/0x8f0
[ 69.795475] [<ffffffff81577248>] ath_rx_tasklet+0x698/0xd90
[ 69.795486] [<ffffffff81574adc>] ath9k_tasklet+0xdc/0x260
[ 69.795497] [<ffffffff8105293f>] tasklet_action+0xcf/0xe0
[ 69.795506] [<ffffffff81052c87>] __do_softirq+0xa7/0x290
[ 69.795515] [<ffffffff81052fa5>] irq_exit+0x85/0x90
[ 69.795525] [<ffffffff81004943>] do_IRQ+0x53/0xe0
[ 69.795534] [<ffffffff818d536a>] common_interrupt+0x6a/0x6a
[ 69.795540] <EOI> [<ffffffff8166c3fc>] ? cpuidle_enter_state+0x6c/0x160
[ 69.795568] [<ffffffff8166c3e5>] ? cpuidle_enter_state+0x55/0x160
[ 69.795578] [<ffffffff8166c5c2>] cpuidle_enter+0x12/0x20
[ 69.795589] [<ffffffff81085e58>] cpu_startup_entry+0x2f8/0x3a0
[ 69.795601] [<ffffffff81032daa>] start_secondary+0x13a/0x150
[ 69.795608] ---[ end trace ba87725444b9a94c ]---
Any ideas on what could be wrong would be very appreciated!
You may have to do the following changes in the driver (drivers/net/wireless/ath/regd.c), or apply the patch:
From e21f502fbc3858c3ed3cc8ee97f64f41214e43d7 Mon Sep 17 00:00:00 2001
From: A Raghavendra Rao <arrao@cdac.in>
Date: Mon, 21 Dec 2015 11:29:29 +0530
Subject: [PATCH 01/17] Regd changes
- Removed REGULATORY_STRICT_REG flag to support all ath9k cards
- Modified NL80211_REGDOM_SET_BY_DRIVER to NL80211_REGDOM_SET_BY_USER
This flags will enforce the user space regulatory domain to be used
Signed-off-by: A Raghavendra Rao <arrao@cdac.in>
---
drivers/net/wireless/ath/regd.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c
index b1e4171..dec6ec7 100644
--- a/drivers/net/wireless/ath/regd.c
+++ b/drivers/net/wireless/ath/regd.c
@@ -633,8 +633,7 @@ ath_regd_init_wiphy(struct ath_regulatory *reg,
const struct ieee80211_regdomain *regd;
wiphy->reg_notifier = reg_notifier;
- wiphy->regulatory_flags |= REGULATORY_STRICT_REG |
- REGULATORY_CUSTOM_REG;
+ wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
if (ath_is_world_regd(reg)) {
/*
@@ -654,7 +653,7 @@ ath_regd_init_wiphy(struct ath_regulatory *reg,
wiphy_apply_custom_regulatory(wiphy, regd);
ath_reg_apply_radar_flags(wiphy);
- ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg);
+ ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_USER, reg);
return 0;
}
--
1.7.9.5
line 91, need to add REG_BIN=/lib/crda/regulatory.bin
c2c/802.11p-crda$ make REG_BIN=/lib/crda/regulatory.bin
or it will cause error, though it doesn't do any harm to the whole process.
Why I keep having this whever I try to make iw -- wifi configuration tool
/bin/sh: pkg-config: not found
/bin/sh: pkg-config: not found
/bin/sh: pkg-config: not found
/bin/sh: pkg-config: not found
/bin/sh: pkg-config: not found
Makefile:76: *** Cannot find development files for any supported version of libnl. Stop.
abualhoul44, you should install the package "pkg-config". Then you should install the libnl packages, however it depends of the version that you have installed, in my case I needed "libnl" and "libnl-devel".
I have followed the procedure, Kernel updated, each build and make was smooth on apu2 box and Voyage 0.10. but when reboot to the new kernel, I have no more wireless card or eithernet.
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:
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… :)
please check that you are booted in the same kernel CONFIG_LOCALVERSION="test1" .
uname -a |grep test1