netdev - Re: [PATCH wpan-next v3 0/6] IEEE 802.15.4 passive scan support

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Message-ID: <20230104132037.0c49a4ed@xps-13>
Date:   Wed, 4 Jan 2023 13:20:37 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Stefan Schmidt <stefan@...enfreihafen.org>
Cc:     Alexander Aring <alex.aring@...il.com>, linux-wpan@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>, netdev@...r.kernel.org,
        David Girault <david.girault@...vo.com>,
        Romuald Despres <romuald.despres@...vo.com>,
        Frederic Blain <frederic.blain@...vo.com>,
        Nicolas Schodet <nico@...fr.eu.org>,
        Guilhem Imberton <guilhem.imberton@...vo.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH wpan-next v3 0/6] IEEE 802.15.4 passive scan support

Hi Stefan,

stefan@...enfreihafen.org wrote on Tue, 3 Jan 2023 20:43:02 +0100:

> Hello Miquel.
> 
> On 03.01.23 17:56, Miquel Raynal wrote:
> > Hello,
> > 
> > We now have the infrastructure to report beacons/PANs, we also have the
> > capability to transmit MLME commands synchronously. It is time to use
> > these to implement a proper scan implementation.
> > 
> > There are a few side-changes which are necessary for the soft MAC scan
> > implementation to compile/work, but nothing big. The two main changes
> > are:
> > * The introduction of a user API for managing scans.
> > * The soft MAC implementation of a scan.
> > 
> > In all the past, current and future submissions, David and Romuald from
> > Qorvo are credited in various ways (main author, co-author,
> > suggested-by) depending of the amount of rework that was involved on
> > each patch, reflecting as much as possible the open-source guidelines we
> > follow in the kernel. All this effort is made possible thanks to Qorvo
> > Inc which is pushing towards a featureful upstream WPAN support.
> > 
> > Example of output:
> > 
> > 	# iwpan monitor
> > 	coord1 (phy #1): scan started
> > 	coord1 (phy #1): beacon received: PAN 0xabcd, addr 0xb2bcc36ac5570abe
> > 	coord1 (phy #1): scan finished
> > 	coord1 (phy #1): scan started
> > 	coord1 (phy #1): scan aborted  
> 
> These patches have been applied to the wpan-next tree and will be
> part of the next pull request to net-next. Thanks!
> 
> Before I would add them to a pull request to net-next I would like to have an updated patchset for iwpan to reflect these scan changes. We would need something to verify the kernel changes and try to coordinate a new iwpan release with this functionality with the major kernel release bringing the feature.

So far I did not made a single change for the scan, but a common
changeset for scan+beaconing (which I am about to send), should I split
it or should we assume we could introduce scanning and beaconing in the
same kernel release?

Thanks,
Miquèl