netdev - Re: [RFC net-next 00/15] net: A socket API for LoRa

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Date:   Sun, 5 Aug 2018 15:49:20 +0200
From:   Andreas Färber <afaerber@...e.de>
To:     Ben Whitten <Ben.Whitten@...rdtech.com>,
        Jian-Hong Pan <starnight@...cu.edu.tw>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jiri Pirko <jiri@...nulli.us>,
        Marcel Holtmann <marcel@...tmann.org>,
        "David S. Miller" <davem@...emloft.net>,
        Matthias Brugger <mbrugger@...e.com>,
        Janus Piwek <jpiwek@...oweurope.com>,
        Michael Röder <michael.roeder@...et.eu>,
        Dollar Chen <dollar.chen@...ec.com>,
        Ken Yu <ken.yu@...wireless.com>,
        Konstantin Böhm <konstantin.boehm@...ud.de>,
        Jan Jongboom <jan.jongboom@....com>,
        Jon Ortego <Jon.Ortego@...t.de>,
        "contact@...otlab.com" <contact@...otlab.com>,
        Brian Ray <brian.ray@...k-labs.com>,
        "lora@...balsat.com.tw" <lora@...balsat.com.tw>,
        Alexander Graf <agraf@...e.de>,
        Michal Kubeček <mkubecek@...e.cz>,
        Hasnain Virk <Hasnain.Virk@....com>,
        Stefan Schmidt <stefan@...enfreihafen.org>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        "seth.forshee@...onical.com" <seth.forshee@...onical.com>,
        Daniele Comel <dcomel@...ot.com>,
        linux-wpan <linux-wpan@...r.kernel.org>
Subject: Re: [RFC net-next 00/15] net: A socket API for LoRa

Hi Ben and Jian-Hong,

[- SPI - devicetree]

Am 18.07.2018 um 13:28 schrieb Ben Whitten:
>> Meanwhile my attempt to play with netlink during SUSE
>> Hackweek has been
>> going slow and I could use some guidance or a volunteer to
>> contribute: I
>> have a bare skeleton of registration, commands, attributes
>> and multicast
>> groups, but no plan yet how to connect that to the actual
>> drivers to
>> query or apply the settings...
> 
> Happy to help, I will be starting from zero on netlink but I can contribute my existing work incorporating Marks comments for sx1301 etal.

I've figured out a way to retrieve a frequency value via netlink:
By passing the lora0 ifindex in as attribute, nllora can look up the
net_device by index, and then via struct lora_dev_priv call into hooks
that the device drivers can optionally implement. :)

https://git.kernel.org/pub/scm/linux/kernel/git/afaerber/linux-lora.git/tree/net/lora/netlink.c?h=lora-next

Tested with HIMO-01M module.
The command might need an additional channel attribute for SX130x.

The corresponding nltest program (using libnl-genl) is here:
https://github.com/afaerber/lora-modules/blob/master/nltest.c

Cheers,
Andreas

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