netdev - Re: [RFC][PATCH] net: arinc429: Add ARINC-429 stack

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: <56373140.6040003@pengutronix.de>
Date:	Mon, 2 Nov 2015 10:47:44 +0100
From:	Marc Kleine-Budde <mkl@...gutronix.de>
To:	Marek Vasut <marex@...x.de>, netdev@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Oliver Hartkopp <socketcan@...tkopp.net>,
	Wolfgang Grandegger <wg@...ndegger.com>,
	Andrew Lunn <andrew@...n.ch>,
	Andrey Vostrikov <andrey.vostrikov@...entembedded.com>
Subject: Re: [RFC][PATCH] net: arinc429: Add ARINC-429 stack

On 11/02/2015 12:16 AM, Marek Vasut wrote:
> The ARINC-429 is a technical standard, which describes, among others,
> a data bus used by airplanes. The standard contains much more, since
> it is based off the ISO/OSI model, but this patch implements just the
> data bus protocol.
> 
> This stack is derived from the SocketCAN implementation, already present
> in the kernel and thus behaves in a very similar fashion. Thus far, we
> support sending RAW ARINC-429 datagrams, configuration of the RX and TX
> clock speed and filtering.
> 
> The ARINC-429 datagram is four-byte long. The first byte is always the
> LABEL, the function of remaining three bytes can vary, so we handle it
> as an opaque PAYLOAD. The userspace tools can send these datagrams via
> a standard socket.
> 
> A LABEL-based filtering can be configured on each socket separately in
> a way comparable to CAN -- user uses setsockopt() to push a list of
> label,mask tuples into the kernel and the kernel will deliver a datagram
> to the socket if (<received_label> & mask) == (label & mask), otherwise
> the datagram is not delivered.

What's difference compared to CAN besides a different MTU? The CAN stack
is already capable to handle CAN and CAN-FD frames. Would it make sense
to integrate the ARINC-429 into the existing CAN stack?

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686  | http://www.pengutronix.de   |



Download attachment "signature.asc" of type "application/pgp-signature" (456 bytes)