[OpenWrt-Devel] ath9k: fix dynack in IBSS mode

Lorenzo Bianconi lorenzo.bianconi at redhat.com
Thu Feb 28 11:48:13 EST 2019


> On Thu, Feb 28, 2019 at 1:59 AM Koen Vandeputte
> <koen.vandeputte at ncentric.com> wrote:
> >
> >
> > On 27.02.19 08:13, Lorenzo Bianconi wrote:
> > >> <snip>
> > > What I mean is just a p2p link running in AP-STA mode, I guess there is no
> > > difference for users. Am I missing something?
> > >
> 
> The design of the out-of-box firmware for AREDN, there are many end
> users that do not have IT skill set to change these settings at
> /etc/config level.  Although, we could create high level UI setting
> options.   The firmware is packaged so a "node" can boot live and will
> simply work extending the network with no previous coordination of
> config settings -- it can be in any logical network position: P2P,
> P2MP, MP2P,  MP2MP.    Adding such a setting of this network position
> could be a fallback option to consider, but not desirable.
> 
> > >>   Is dynack going to receive the late acks if I manage to run
> > >> wpa_supplicant (wpad-mini?) in plaintext or key_mgmt=NONE mode?
> > > What we really needs are authentication packets to trigger 'late acks'
> > > in ibss mode. I think wpa_supplicant in plaintext is enough but I am not
> > > 100% sure.
> > > @Koen: could you please confirm it?
> >
> > Will try to test it asap.
> >
> > Regards,
> >
> > Koen
> >
> 
> I'm also working to test, but may not be for several days.
> wpa_supplicant would be required on both ends?  dynack is dependent on
> ack's generated by wpa_supplicant?   This is an upgrade issue of
> people using old and and new versions of the firmware at the same time
> across a larger network.

Yes, you need it on both ends since late acks are detected on authentication
messages in ibss mode and ack timeout estimation is done independently on each side.
Could you please just try it on a single 50km link in order to double check if it
works properly?

Regards,
Lorenzo

> 
> Joe AE6XE
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