Subject: Re: [PATCH 1/1] Documentation: networking: document CAN ISO-TP

From: Simon Horman <[email-masked]>
Date: Tue, 19 Mar 2024 12:06:25 +0000

On Wed, Mar 13, 2024 at 11:34:31PM +0100, Francesco Valla wrote:
> Document basic concepts, APIs and behaviour of the CAN ISO-TP (ISO
> 15765-2) stack.
> 
> Signed-off-by: Francesco Valla <[email-masked]>

Hi Francesco,

As it looks like there will be a v2 of this patchset
please consider running checkpatch.pl --codespell
and addressing the warnings it reports.

...

> +Transport protocol and associated frame types
> +---------------------------------------------
> +
> +When transmitting data using the ISO-TP protocol, the payload can either fit
> +inside one single CAN message or not, also considering the overhead the protocol
> +is generating and the optional extended addressing. In the first case, the data
> +is transmitted at once using a so-called Single Frame (SF). In the second case,
> +ISO-TP defines a multi-frame protocol, in which the sender asks (through a First
> +Frame - FF) to the receiver the maximum supported size of a macro data block
> +(``blocksize``) and the minimum time time between the single CAN messages
> +composing such block (``stmin``). Once these informations have been received,

nit: Once this information has

> +the sender starts to send frames containing fragments of the data payload
> +(called Consecutive Frames - CF), stopping after every ``blocksize``-sized block
> +to wait confirmation from the receiver (which should then send a Flow Control
> +frame - FC - to inform the sender about its availability to receive more data).
> +

...