On Fri, 4 Dec 2020 14:35:08 +0100 Marc Kleine-Budde wrote: > From: Oliver Hartkopp <socketcan@xxxxxxxxxxxx> > > When CAN_ISOTP_SF_BROADCAST is set in the CAN_ISOTP_OPTS flags the CAN_ISOTP > socket is switched into functional addressing mode, where only single frame > (SF) protocol data units can be send on the specified CAN interface and the > given tp.tx_id after bind(). > > In opposite to normal and extended addressing this socket does not register a > CAN-ID for reception which would be needed for a 1-to-1 ISOTP connection with a > segmented bi-directional data transfer. > > Sending SFs on this socket is therefore a TX-only 'broadcast' operation. Unclear from this patch what is getting fixed. Looks a little bit like a feature which could be added in a backward compatible way, no? Is it only added for completeness of the ISOTP implementation?
