netdev - Re: [PATCH] FlexRay: Allocate numbers for FlexRay communication

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Date:	Thu, 30 Apr 2009 19:28:01 +0200
From:	Oliver Hartkopp <oliver@...tkopp.net>
To:	Michael Arndt <flexray4linux@...iptkiller.de>
CC:	netdev@...r.kernel.org
Subject: Re: [PATCH] FlexRay: Allocate numbers for FlexRay communication

Michael Arndt wrote:

> This patch adds a protocol family, Ethernet protocol ID,
> ARP protocol identifier and a line discipline for FlexRay
> communication using Linux.
> 
> I do not know why ETH_P_CAN has been chosen to be 0x000C

perhaps because of 'C'AN ?

> 
> Further code including the FlexRay core, raw sockets and
> examples will soon be posted on a yet-to-be-created project site.

Usually there's a project and some kind of community that worked, discussed
and tested the stuff for some time to be mature for mainline.

- What is the technical background?
- Is there any documentation?
- Do you need realtime?
- What hardware is supported?

> +++ b/include/linux/tty.h
> @@ -23,7 +23,7 @@
>   */

>  /* line disciplines */
>  #define N_TTY		0
> @@ -46,6 +46,7 @@
>  #define N_GIGASET_M101	16	/* Siemens Gigaset M101 serial DECT adapter */
>  #define N_SLCAN		17	/* Serial / USB serial CAN Adaptors */
>  #define N_PPS		18	/* Pulse per Second */
> +#define N_SLFLEXRAY	19	/* Serial / USB serial FlexRay adapters */

???

I bet there's no Flexray hardware on the market that can be attached on a
serial line like there are for low-cost CAN adaptors, right?

So why are you claiming a line discipline here?

Regards,
Oliver
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