c1aabdf379
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>
55 lines
2.2 KiB
Text
55 lines
2.2 KiB
Text
#
|
|
# Controller Area Network (CAN) network layer core configuration
|
|
#
|
|
|
|
menuconfig CAN
|
|
depends on NET
|
|
tristate "CAN bus subsystem support"
|
|
---help---
|
|
Controller Area Network (CAN) is a slow (up to 1Mbit/s) serial
|
|
communications protocol which was developed by Bosch in
|
|
1991, mainly for automotive, but now widely used in marine
|
|
(NMEA2000), industrial, and medical applications.
|
|
More information on the CAN network protocol family PF_CAN
|
|
is contained in <Documentation/networking/can.txt>.
|
|
|
|
If you want CAN support you should say Y here and also to the
|
|
specific driver for your controller(s) below.
|
|
|
|
config CAN_RAW
|
|
tristate "Raw CAN Protocol (raw access with CAN-ID filtering)"
|
|
depends on CAN
|
|
default N
|
|
---help---
|
|
The raw CAN protocol option offers access to the CAN bus via
|
|
the BSD socket API. You probably want to use the raw socket in
|
|
most cases where no higher level protocol is being used. The raw
|
|
socket has several filter options e.g. ID masking / error frames.
|
|
To receive/send raw CAN messages, use AF_CAN with protocol CAN_RAW.
|
|
|
|
config CAN_BCM
|
|
tristate "Broadcast Manager CAN Protocol (with content filtering)"
|
|
depends on CAN
|
|
default N
|
|
---help---
|
|
The Broadcast Manager offers content filtering, timeout monitoring,
|
|
sending of RTR frames, and cyclic CAN messages without permanent user
|
|
interaction. The BCM can be 'programmed' via the BSD socket API and
|
|
informs you on demand e.g. only on content updates / timeouts.
|
|
You probably want to use the bcm socket in most cases where cyclic
|
|
CAN messages are used on the bus (e.g. in automotive environments).
|
|
To use the Broadcast Manager, use AF_CAN with protocol CAN_BCM.
|
|
|
|
config CAN_GW
|
|
tristate "CAN Gateway/Router (with netlink configuration)"
|
|
depends on CAN
|
|
default N
|
|
---help---
|
|
The CAN Gateway/Router is used 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 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.
|
|
|
|
source "drivers/net/can/Kconfig"
|