commit c1aabdf379bc2feeb0df7057ed5bad96f492133e
author Oliver Hartkopp <socketcan@hartkopp.net> Thu Sep 01 04:23:23 2011 +0000
committer David S. Miller <davem@davemloft.net> Fri Sep 16 17:37:51 2011 -0400
tree 36adaf1c2e8b18b63f741bb2b3f7ef2da56ab77f
parent 13225977f5429fc5a8c0c1933e3283ab4c7042d8

can-gw: add netlink based CAN routing

This patch adds a CAN Gateway/Router to route (and modify) CAN frames.

It is based on the PF_CAN core infrastructure for msg filtering and msg
sending and can optionally modify routed CAN frames on the fly.
CAN frames can *only* be routed between CAN network interfaces (one hop).
They can be modified with AND/OR/XOR/SET operations as configured by the
netlink configuration interface known e.g. from iptables. From the netlink
view this can-gw implements RTM_{NEW|DEL|GET}ROUTE for PF_CAN.

The CAN specific userspace tool to manage CAN routing entries can be found in
the CAN utils http://svn.berlios.de/wsvn/socketcan/trunk/can-utils/cangw.c
at the SocketCAN SVN on BerliOS.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>