isotptun1

Usage

Overview

isotptun - IP over CAN ISO-TP (ISO15765-2) tunnel / proof-of-concept.

This program creates a Linux tunnel netdevice 'ctunX' and transfers the ethernet frames inside ISO15765-2 (unreliable) datagrams on CAN.

Options

-s <can_id>

(source can_id. Use 8 digits for extended IDs)

-d <can_id>

(destination can_id. Use 8 digits for extended IDs)

-n <name>

(name of created IP netdevice. Default: 'ctun%d')

-x <addr>[:<rxaddr>]

(extended addressing / opt. separate rxaddr)

-L <mtu>:<tx_dl>:<tx_flags>

(link layer options for CAN FD)

-p [tx]:[rx]

(set and enable tx/rx padding bytes)

-P <mode>

(check rx padding for (l)ength (c)ontent (a)ll)

-t <time ns>

(transmit time in nanosecs)

-b <bs>

(blocksize. 0 = off)

-m <val>

(STmin in ms/ns. See spec.)

-w <num>

(max. wait frame transmissions.)

-D

(daemonize to background when tun device created)

-h

(half duplex mode.)

-v

(verbose mode. Print symbols for tunneled msgs.)

CAN IDs and addresses are given and expected in hexadecimal values. Use e.g. 'ifconfig ctun0 123.123.123.1 pointopoint 123.123.123.2 up' to create a point-to-point IP connection on CAN.