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