netdev - Re: [RFC 1/3 net] lorawan: Add LoRaWAN class module

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Date:   Wed, 26 Sep 2018 23:52:50 +0800
From:   Jian-Hong Pan <starnight@...cu.edu.tw>
To:     Andreas Färber <afaerber@...e.de>
Cc:     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>,
        "linux-kernel@...r.kernel.org>," <contact@...otlab.com>,
        Ben Whitten <ben.whitten@...rdtech.com>,
        Brian Ray <brian.ray@...k-labs.com>, lora@...balsat.com.tw,
        Alexander Graf <agraf@...e.de>,
        Michal Kubeček <mkubecek@...e.cz>,
        Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org,
        Steve deRosier <derosier@...il.com>,
        Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
        Pieter ROBYNS <pieter.robyns@...sselt.be>,
        Hasnain Virk <Hasnain.Virk@....com>,
        linux-wpan - ML <linux-wpan@...r.kernel.org>,
        Stefan Schmidt <stefan@...enfreihafen.org>,
        Daniele Comel <dcomel@...ot.com>, shess@...sware.de,
        Xue Liu <liuxuenetmail@...il.com>, fomi@...wireless.com,
        afonsobordado@....co
Subject: Re: [RFC 1/3 net] lorawan: Add LoRaWAN class module

Andreas Färber <afaerber@...e.de> 於 2018年9月24日 週一 上午12:40寫道：
>
> Hi Jian-Hong,
>
> [+ Afonso]
>
> Am 23.08.18 um 19:15 schrieb Jian-Hong Pan:
> > LoRaWAN defined by LoRa Alliance(TM) is the MAC layer over LoRa devices.
> >
> > This patch implements part of Class A end-devices features defined in
> > LoRaWAN(TM) Specification Ver. 1.0.2:
> > 1. End-device receive slot timing
> > 2. Only single channel and single data rate for now
> > 3. Unconfirmed data up/down message types
> > 4. Encryption/decryption for up/down link data messages
> >
> > It also implements the the functions and maps to Datagram socket for
> > LoRaWAN unconfirmed data messages.
> >
> > On the other side, it defines the basic interface and operation
> > functions for compatible LoRa device drivers.
> >
> > Signed-off-by: Jian-Hong Pan <starnight@...cu.edu.tw>
> > ---
> >  include/linux/maclorawan/lora.h | 239 +++++++++++
> >  net/maclorawan/Kconfig          |  14 +
> >  net/maclorawan/Makefile         |   2 +
> >  net/maclorawan/lorawan.h        | 219 ++++++++++
> >  net/maclorawan/lrwsec.c         | 237 +++++++++++
> >  net/maclorawan/lrwsec.h         |  57 +++
> >  net/maclorawan/mac.c            | 552 +++++++++++++++++++++++++
> >  net/maclorawan/main.c           | 665 ++++++++++++++++++++++++++++++
> >  net/maclorawan/socket.c         | 700 ++++++++++++++++++++++++++++++++
> >  9 files changed, 2685 insertions(+)
> >  create mode 100644 include/linux/maclorawan/lora.h
>
> Can we use include/linux/lora/lorawan.h for simplicity?

Technically, yes

> >  create mode 100644 net/maclorawan/Kconfig
> >  create mode 100644 net/maclorawan/Makefile
> >  create mode 100644 net/maclorawan/lorawan.h
> >  create mode 100644 net/maclorawan/lrwsec.c
> >  create mode 100644 net/maclorawan/lrwsec.h
> >  create mode 100644 net/maclorawan/mac.c
> >  create mode 100644 net/maclorawan/main.c
> >  create mode 100644 net/maclorawan/socket.c
>
> This patch is much too large for me to review...
>
> It also doesn't seem to follow the structure I suggested: 802.15.4 has
> two separate directories, net/ieee802154/ and net/mac802154/. Therefore
> I had suggested net/maclorawan/ only for code that translates from
> ETH_P_LORAWAN to ETH_P_LORA socket buffers, i.e. your soft MAC. Generic
> socket code that applies also to hard MAC drivers I expected to go
> either to net/lora/lorawan/ or better net/lorawan/ or some other clearly
> separate location, with its own Kconfig symbol - any reason not to?
> Consider which parts can be enabled/used independently of each other,
> then you can put them into two (or more?) different patches.

Maybe I misunderstood before.  Besides, the header files need to be
split for different paths or folders.
Anyway, I will try to separate it into parts in version 2 patches.

> Also please use SPDX license identifiers in your headers.
> And please don't put the whole world in To, use CC.

Regards,
Jian-Hong Pan