Re: [ipwave] About OCB patch for ath10k driver on linux

Alexandre Petrescu <alexandre.petrescu@gmail.com> Wed, 11 March 2020 16:10 UTC

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From: Alexandre Petrescu <alexandre.petrescu@gmail.com>
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Subject: Re: [ipwave] About OCB patch for ath10k driver on linux
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Le 11/03/2020 à 16:53, Dick Roy a écrit :
> Alex et. al.,
> 
> FYI ... 802.11 (p) and OCB are about to be dumped on the trash heap of
> history  unless the C-V2X proponents are halted in their tracks, To the
> extent you are relying on such technologies, you and the entire ITS group in
> the IETF are wasting your time.

Well, there is this 802.11bd which seems to be progressing according to 
plan.  OCB for ath10k would go along that line.

Simultaneously, I smartly wonder whether C-V2X is ok with CAM in 3GPP or 
rather prefers BSM in 3GPP?

Alex

> 
> All the best,
> 
> RR
> 
> -----Original Message-----
> From: its [mailto:its-bounces@ietf.org] On Behalf Of Alexandre Petrescu
> Sent: Wednesday, March 11, 2020 7:32 AM
> To: its@ietf.org
> Cc: Mariama SARR
> Subject: Re: [ipwave] About OCB patch for ath10k driver on linux
> 
> Hi,
> 
> I am looking for support for making the OCB mode for ath10k drivers for
> linux.
> 
> Currently there is no OCB mode for ath10k drivers.
> 
> An OCB driver for ath10k driver would open the path towards using
> 802.11ac in vehicular networks in OCB mode.
> 
> We tried to make it work but we have not succeeded fully.
> 
> One initial error is this:
>> root@OpenWrt:/# iw dev wlan3 ocb join 5900 10MHz
>> command failed: Invalid argument (-22)
> One initial success is this:
>> Ifconfig wlan3 shows the following output. It shows that the
>> interface is up.
>> wlan3 Link encap:Ethernet HWaddr 04:F0:21:54:42:D7
>> UP BROADCAST MULTICAST MTU:1500 Metric:1
>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
> 
> 
> We developped the premisses of a OCB patch for ath10k, and a howto.
> They are attached to this email.
> 
> We have several additional binary firmwares for the card, that could be
> found on the web too. We have an ath9k patch that is minimal.  Also a
> few additional explanatory files.  All attached.
> 
> We have one cheap 802.11ac minipci card Compex WLE900VX from Amazon.  We
> could send it by post to an interested person, if that's not too
> expensive, or maybe pass it during a f2f meeting, or via somebody.  This
> is common practice.
> 
> The person who realized this OCB package for ath10k deserves many thanks
> - Mariama SARR.  And earlier persons who produced initial works on ath5k
> and ath9k.
> 
> Alex
> 
> Le 18/12/2019 à 11:38, Alexandre Petrescu a écrit :
>> Hi, IPWAVErs,
>>
>> I would like to know whether someone else works on an OCB patch for
>> ath10k?
>>
>> We work on a patch file for OCB mode for ath10k driver for  linux.
>>
>> An OCB patch for ath10k would allow to get more bandwidth.  One could
>>   get more bandwidth than the 16mbit/s of 802.11p by linking two to
>> five channels even with just an ath9k driver (for which exist OCB
>> patches). But with ath10k there might be other advantages and even
>> higher bandwidth.
>>
>> An OCB patch for ath10k driver does not exist in the Internet.
>>
>> We do not post yet our patch file because it does not work yet, and
>> we do not want to vehiculate false hopes.  But I will post it end of
>> March 2020 at latest, at the end of the project.
>>
>> The card we use is "PC ngines WL900VX - 802.11ac miniPCI Xpress
>> Radio" for 35,46Eur on Amazon.  It is Made in China.  It has three
>> antenna plugs.
>>
>> The status of working is: we can add OCB mode and and configure the
>> card in OCB mode.  Still there is an error "command failed (invalid
>> argument (-22)" when the iw command is issued.
>>
>> Our current patch file is 910 lines long and touches on many files,
>> such as mac.c in folder
>>
> openwrt-08112019/build_dir/target-arm_cortex-a9+neon_musl-1.1.12_eabi/linux-
> imx6/linux-4.4/drivers/net/wireless/ath/ath10k,
>>   and others.
>>
>> Alex
>>
>> _______________________________________________ its mailing list
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>