[Battlemesh] Limit minimum bitrate

[Ben West]

On 2.4GHz meshes I operate, where each node broadcasts an IBSS SSID plus
one or two AP SSID's, this is what I do to bar very low bitrates on the AP
SSID's.

/etc/hotplug.d/90-ratemask-firewall:

#!/bin/sh


. /lib/functions.sh

. /lib/functions/network.sh


# Don't set rates on mesh interface

meshif=$(uci -P /var/state get network.mesh.ifname)


# Disable low legacy 2.4GHz bitrates

if [ add = "$ACTION" -a wlan0 != "$meshif" ]; then

case "$DEVICE" in

br-*)

#Bridged interfage, check for wlan0 as member

for i in $(ls /sys/class/net/$DEVICE/brif); do

case "$i" in

wlan0)

logger setting bitrate for device "$i" on interface "$INTERFACE"

iw "$i" set bitrates legacy-2.4 5.5 6 9 11 12 18 24 36 48 54

;;

esac

done

;;

esac

fi

#

I don't limit bitrates on the IBSS interface (named "mesh"), since I would
want the nodes to stay on the adhoc net in event of extreme interference
(i.e. so that they remain controllable).



On Fri, Sep 12, 2014 at 12:19 PM, Mitar <mitar at tnode.com> wrote:

> Hi!
>
> I had in mind AP mode, for clients. But interesting to learn about IBSS
> join as well.
>
> But I really think it is useful to be limit the minimum bitrate. It is
> strange for me that is not easily available. Am I missing something? Is
> it not a good idea?
>
>
> Mitar
>
> > Mitar, you may want to check the basic-rates argument of the ibss join
> > command. (assuming we are talking about ibss mode):
> >
> > from the output of "iw dev wlan0 ibss join":
> >
> > [basic-rates <rate in Mbps,rate2,...>]
> >
> > all the stations must have the same basic rates to join the ibss cell.
> > Rates that are not part of the basic-rate set should not be used by the
> > stations.
> >
> > Cheers,
> >
> > On 12/09/14 14:52, Pau wrote:
> >> Not sure if it solves your question, but just in case it helps you
> somehow.
> >> In a mesh network you can use the mcast_rate option to set the
> multicast rate of the WiFi devices. So if the routing protocol is using
> multicast flooding to discover neighbors, it will only discover those who
> are available at this specific rate.
> >>
> >> Cheers.
> >>
> >> On 12/09/14 14:00, Bastian Bittorf wrote:
> >>> * Mitar <mitar at tnode.com> [12.09.2014 08:56]:
> >>>> This seems to fix the bitrate to a fixed one, not setting the minimum
> one.
> >>>
> >>> as far as i understand, you can set a "allowed rateset" with 'iw',
> which
> >>> should fit your needs...
> >>>
> >>> bye, bastian
> >>> _______________________________________________
> >>> Battlemesh mailing list
> >>> Battlemesh at ml.ninux.org
> >>> http://ml.ninux.org/mailman/listinfo/battlemesh
> >>>
> >>
> >
> >
> >
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> >
>
> --
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-- 
Ben West
http://gowasabi.net
ben at gowasabi.net
314-246-9434
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