On 6/17/20 2:59 PM, Kurt Van Dijck wrote: >> + 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. ...or rather use something modern and machine readable. >> 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? Today we probably want to have a netlink interface to read that information from the kernel. Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
