[Battlemesh] wifibroadcast

[Daniel Golle]

Hi Simon,

On Fri, Apr 21, 2017 at 08:24:22PM +0200, Simon Wunderlich wrote:
> On Friday, April 21, 2017 6:45:17 PM CEST Daniel Golle wrote:
> > Hi!
> > 
> > On Fri, Apr 21, 2017 at 04:54:39PM +0200, Benjamin Henrion wrote:
> > > Hi,
> > > 
> > > Just found this project, interesting ideas on using monitor mode:
> > > 
> > > https://befinitiv.wordpress.com/wifibroadcast-analog-like-transmission-of-> > live-video-data/
> > > 
> > > I think in the past I used adhoc inside monitor mode with aircrack-ng
> > > if I remember.
> > 
> > Promissing indeed, because this might draw some attention to the need
> > to provide the now missing TX rate control for injection.
> > Hence this wifibroadcast project uses patched firmware and/or drivers
> > to force transmission at a fixed bitrate -- it'd be much better if
> > injection mode had a proper way for the transmitter to drive
> > rate-control in software. Other projects (such as GNUnet...) would
> > also greatly benefit from that...
> > Having more wild groth (and even ugly things like firmware patches)
> > does provide a good argument for having support for RADIOTAP_MCS,
> > RADIOTAP_VHT, RADIOTAP_XChannel... in mac80211 also for TX injection.
> > Previously setting the legacy bitrate (up to 54MBit/s single-stream
> > with 20MHz channel width) was supported via the RADIOTAP_RATE header,
> > but even that was dropped a long time ago...
> 
> Huh? I believe both RADIOTAP_MCS and RADIOTAP_RATE are supported fine, at least 
> for ath9k. Not sure about other drivers, but I'm using it extensively on 
> ath9k.

Cool! This is very good news which I wasn't aware of until now!
What are you using it for, if I may ask?

> 
> http://lxr.free-electrons.com/source/net/mac80211/tx.c#L1925