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From: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
To: Jian-Hong Pan <starnight@g.ncu.edu.tw>
Cc: "Andreas Färber" <afaerber@suse.de>,
	netdev@vger.kernel.org,
	"<linux-arm-kernel@lists.infradead.org\\"
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org>," <linux-kernel@vger.kernel.org>,
	"Jiri Pirko" <jiri@resnulli.us>,
	"Marcel Holtmann" <marcel@holtmann.org>,
	"David S. Miller" <davem@davemloft.net>,
	"Matthias Brugger" <mbrugger@suse.com>,
	"Janus Piwek" <jpiwek@arroweurope.com>,
	"Michael Röder" <michael.roeder@avnet.eu>,
	"Dollar Chen" <dollar.chen@wtmec.com>,
	"Ken Yu" <ken.yu@rakwireless.com>,
	"Konstantin Böhm" <konstantin.boehm@ancud.de>,
	"Jan Jongboom" <jan.jongboom@arm.com>,
	"Jon Ortego" <Jon.Ortego@imst.de>,
	"linux-kernel@vger.kernel.org>," <contact@snootlab.com>,
	"Ben Whitten" <ben.whitten@lairdtech.com>,
	"Brian Ray" <brian.ray@link-labs.com>,
	lora@globalsat.com.tw, "Alexander Graf" <agraf@suse.de>,
	"Michal Kubeček" <mkubecek@suse.cz>,
	"Rob Herring" <robh@kernel.org>,
	devicetree@vger.kernel.org, "Steve deRosier" <derosier@gmail.com>,
	"Mark Brown" <broonie@kernel.org>,
	linux-spi@vger.kernel.org, pieter.robyns@uhasselt.be,
	"Hasnain Virk" <Hasnain.Virk@arm.com>,
	"linux-wpan - ML" <linux-wpan@vger.kernel.org>,
	"Stefan Schmidt" <stefan@datenfreihafen.org>,
	"Daniele Comel" <dcomel@mipot.com>,
	shess@hessware.de, "Xue Liu" <liuxuenetmail@gmail.com>
Subject: Re: [RFC net-next 00/15] net: A socket API for LoRa
Date: Fri, 10 Aug 2018 16:57:11 +0100	[thread overview]
Message-ID: <20180810165711.59bf26f7@alans-desktop> (raw)
In-Reply-To: <CAC=mGzjn4Kc-q9NFwX6NhU4V_thnzBP8SHtFQKyRbpSKR=yx3w@mail.gmail.com>

> Except saving power, mitigating the wireless signal conflict on the
> air is one of the reasons.

If the device level is always receiving when not transmitting it has no
effect on this. The act of listening does not harm other traffic.

> The sleep/idle/stop mitigate the unconcerned RF signals or messages.

At the physical level it's irrelevant. If we are receiving then we might
hear more things we later discard. It's not running on a tiny
microcontroller so the extra CPU cycles are not going to kill us.

> > How do you plan to deal with routing if you've got multiple devices ?  
> 
> For LoRaWAN, it is a star topology.

No the question was much more how you plan to deal with it in the OS. If
for example I want to open a LORA connection to something, then there
needs to be a proper process to figure out where the target is and how to
get traffic to them.

I guess it's best phrased as

- What does a struct sockaddr_lora look like

- How does the kernel decide which interface it goes out of (if any), and
  if it loops back

remembering we might only be talking to a hub, or we might even be a
virtualized LORA interface where we are pretending to be some kind of
sensor and feeding it back.

Long term yes I think Alexander is right the inevitable fate of all
networks is to become a link layer in order to transmit IP frames 8)

Alan

  parent reply	other threads:[~2018-08-10 16:58 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-01 11:07 [RFC net-next 00/15] net: A socket API for LoRa Andreas Färber
2018-07-01 11:07 ` [RFC net-next 01/15] net: Reserve protocol numbers " Andreas Färber
2018-07-01 11:07 ` [RFC net-next 02/15] net: lora: Define sockaddr_lora Andreas Färber
2018-07-01 11:07 ` [RFC net-next 03/15] net: lora: Add protocol numbers Andreas Färber
2018-07-01 11:07 ` [RFC net-next 04/15] net: Add lora subsystem Andreas Färber
2018-07-01 11:07 ` [RFC net-next 05/15] HACK: net: lora: Deal with .poll_mask in 4.18-rc2 Andreas Färber
2018-07-02 16:22   ` Jiri Pirko
2018-07-02 16:59     ` Andreas Färber
2018-07-01 11:07 ` [RFC net-next 06/15] net: lora: Prepare for device drivers Andreas Färber
2018-07-01 11:07 ` [RFC net-next 07/15] net: lora: Add Semtech SX1276 Andreas Färber
2018-07-01 12:02   ` Andreas Färber
2018-07-01 11:07 ` [RFC net-next 08/15] net: lora: sx1276: Add debugfs Andreas Färber
2018-07-02 16:26   ` Jiri Pirko
2018-07-02 17:57     ` Andreas Färber
2018-07-01 11:07 ` [RFC net-next 09/15] net: lora: Prepare EUI helpers Andreas Färber
2018-07-01 11:07 ` [RFC net-next 10/15] net: lora: Add Microchip RN2483 Andreas Färber
2018-07-01 11:08 ` [RFC net-next 11/15] net: lora: Add IMST WiMOD Andreas Färber
2019-01-06 14:57   ` Heinrich Schuchardt
2019-01-07 11:29     ` Andreas Färber
2018-07-01 11:08 ` [RFC net-next 12/15] net: lora: Add USI WM-SG-SM-42 Andreas Färber
2018-07-01 11:08 ` [RFC net-next 13/15] net: lora: Prepare RAK RAK811 Andreas Färber
2018-07-01 11:08 ` [RFC net-next 14/15] net: lora: Prepare Semtech SX1257 Andreas Färber
2018-07-01 11:08 ` [RFC net-next 15/15] net: lora: Add Semtech SX1301 Andreas Färber
2018-07-02 11:51   ` Ben Whitten
2018-07-03  3:01     ` Andreas Färber
2018-07-05  8:59       ` Ben Whitten
2018-07-02 16:12   ` Mark Brown
2018-07-02 17:34     ` Andreas Färber
2018-07-02 20:43       ` Ben Whitten
2018-07-03  3:21         ` Andreas Färber
2018-07-05  8:43           ` Ben Whitten
2018-07-03 14:50       ` Mark Brown
2018-07-03 15:09         ` Andreas Färber
2018-07-03 15:31           ` Mark Brown
2018-07-03 16:40             ` Andreas Färber
2018-07-04 11:43               ` Mark Brown
2018-07-04 13:41                 ` Ben Whitten
2018-07-04 14:32                   ` Mark Brown
2018-07-03 15:11 ` [RFC net-next 00/15] net: A socket API for LoRa Jian-Hong Pan
2018-08-05  0:11   ` Andreas Färber
2018-08-08 20:36     ` Alan Cox
2018-08-08 22:42       ` Andreas Färber
2018-08-09 11:59         ` Alan Cox
2018-08-09 15:02           ` Jian-Hong Pan
2018-08-09 15:21             ` Alexander Aring
2018-08-10 15:57             ` Alan Cox [this message]
2018-08-11 18:30               ` Stefan Schmidt
2018-08-12 16:49                 ` Andreas Färber
2018-08-12 16:37               ` Jian-Hong Pan
2018-08-12 17:59                 ` Andreas Färber
2018-08-13 12:36                   ` Alan Cox
2018-08-09 15:12           ` Alexander Aring
2018-08-09  0:50     ` Andreas Färber
2018-07-04 18:26 ` Stefan Schmidt
2018-07-05 10:43   ` Helmut Tschemernjak
2018-07-11  2:07     ` Andreas Färber
2018-07-11 11:45       ` Helmut Tschemernjak
2018-07-11 15:21 ` Ben Whitten
2018-07-15 18:13   ` Andreas Färber
2018-07-18 11:28     ` Ben Whitten
2018-08-02  7:52       ` Jian-Hong Pan
2018-08-03  8:44         ` linux-lora.git and LoRaWAN (was: [RFC net-next 00/15] net: A socket API for LoRa) Andreas Färber
2018-08-05 12:49           ` Jian-Hong Pan
2018-08-05 13:49       ` [RFC net-next 00/15] net: A socket API for LoRa Andreas Färber

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