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

Francesco Valla
2024-03-20T22:35:08Z

Hi Simon,

On Tue, Mar 19, 2024 at 12:06:25PM +0000, Simon Horman wrote:
> 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 <valla.francesco@gmail.com>
>
> 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.
>

Will do before v2, thanks for the suggestion.

> ...
>
> > +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

I never grasped the usage of "information" in English, which is not my
first language. I'll make this correction here.

>
> > +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).
> > +
>
> ...

Thanks for the review!

Regards,
Francesco