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Bastian Stender
cf039f14fb
This is a direct consequence of not allowing bind to any device
("3cb6a1204598 j1939: socket: bind() cleanups"), i.e. can_ifindex == 0.
This means before this change jacd would receive from any interface that
was opened by another program.
Without this patch jacd fails with:
acd: bind(): No such device
A more verbose call shows the missing interface:
$ jacd -v 1122334455667788
jacd: ready for can0:1122334455667788
- socket(PF_CAN, SOCK_DGRAM, CAN_J1939);
- setsockopt(, SOL_SOCKET, SO_BINDTODEVICE, can0, 4);
- setsockopt(, SOL_CAN_J1939, SO_J1939_FILTER, <filter>, 84);
- setsockopt(, SOL_CAN_J1939, SO_J1939_RECV_OWN, 1, 4);
- bind(, :fe,0ee00,1122334455667788, 24);
jacd: bind(): No such device
Signed-off-by: Bastian Stender <bst@pengutronix.de>
SocketCAN userspace utilities and tools
This repository contains some userspace utilities for Linux CAN subsystem (aka SocketCAN):
Basic tools to display, record, generate and replay CAN traffic
- candump : display, filter and log CAN data to files
- canplayer : replay CAN logfiles
- cansend : send a single frame
- cangen : generate (random) CAN traffic
- cansniffer : display CAN data content differences (just 11bit CAN IDs)
CAN access via IP sockets
- canlogserver : log CAN frames from a remote/local host
- bcmserver : interactive BCM configuration (remote/local)
- socketcand : use RAW/BCM/ISO-TP sockets via TCP/IP sockets
CAN in-kernel gateway configuration
- cangw : CAN gateway userpace tool for netlink configuration
CAN bus measurement and testing
- canbusload : calculate and display the CAN busload
- can-calc-bit-timing : userspace version of in-kernel bitrate calculation
- canfdtest : Full-duplex test program (DUT and host part)
ISO-TP tools ISO15765-2:2016 for Linux
- isotpsend : send a single ISO-TP PDU
- isotprecv : receive ISO-TP PDU(s)
- isotpsniffer : 'wiretap' ISO-TP PDU(s)
- isotpdump : 'wiretap' and interpret CAN messages (CAN_RAW)
- isotpserver : IP server for simple TCP/IP <-> ISO 15765-2 bridging (ASCII HEX)
- isotpperf : ISO15765-2 protocol performance visualisation
- isotptun : create a bi-directional IP tunnel on CAN via ISO-TP
Log file converters
- asc2log : convert ASC logfile to compact CAN frame logfile
- log2asc : convert compact CAN frame logfile to ASC logfile
- log2long : convert compact CAN frame representation into user readable
Serial Line Discipline configuration (for slcan driver)
- slcan_attach : userspace tool for serial line CAN interface configuration
- slcand : daemon for serial line CAN interface configuration
- slcanpty : creates a pty for applications using the slcan ASCII protocol