linux-kernel - Re: [RFC net-next 00/15] Add support for Silicon Labs CPC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <db54fe16-ae7d-410c-817b-edb4faa6656c@lunn.ch>
Date: Fri, 23 May 2025 22:06:57 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Damien Riégel <damien.riegel@...abs.com>
Cc: Alex Elder <elder@...e.org>, Andrew Lunn <andrew+netdev@...n.ch>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Silicon Labs Kernel Team <linux-devel@...abs.com>,
	netdev@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, Johan Hovold <johan@...nel.org>,
	Alex Elder <elder@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	greybus-dev@...ts.linaro.org
Subject: Re: [RFC net-next 00/15] Add support for Silicon Labs CPC

> I don't really know about UniPro and I'm learning about it as the
> discussion goes, but one of the point listed on Wikipedia is
> "reliability - data errors detected and correctable via retransmission"
> 
> This is where CPC could come in, probably with a different name and a
> reduced scope, as a way to implement reliable transmission over UART,
> SPI, SDIO, by ensuring data errors are detected and packets
> retransmitted if necessary, and be limited to that.

You mentioned HDLC in the past. What is interesting is that HDLC is
actually used in Greybus:

https://elixir.bootlin.com/linux/v6.15-rc7/source/drivers/greybus/gb-beagleplay.c#L581

I've no idea if its just for framing, or if there is also retries on
errors, S-frames with flow and error control etc. There might be code
you can reuse here.

	Andrew