Hello, On di, 16 jun 2020 18:40:49 +0000, Arnej Duranovic wrote: > Hello all, > > Earlier versions of J1939 contained the following: > > + 6. /proc/net/can-j1939 Interface. > + -------------------------------- > + > + Files giving you a view on the in-kernel operation of J1939 are located at: > + /proc/net/j1939. > + > + 6.1 /proc/net/can-j1939/ecu > + > + This file gives an overview of the known ECU's to the kernel. > + - iface : network interface they operate on. > + - SA : current address. > + - name : 64bit NAME > + - flags : 'L' = local, 'R' = remote > > I am interested in what happened to this feature since I do not see it in the latest implementation or in the documentation? The feature got removed, as (almost) all of the /proc interface for making mainline integration easier. The idea was to restore the required interfaces when necessary. > > I am interested in retrieving "known ECU's to the kernel" in the latest implementation. What is recommended? I understand your question. The simple answer right now is: there isn't. we could debate about this being necessary in /proc, or rather in debugfs, since this knowledge should not be used in real applications? Am I right that your intended use is debugging related? Kind regards, Kurt