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+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Controller Area Network (CAN) network layer core configuration
+#
+
+menuconfig CAN
+ tristate "CAN bus subsystem support"
+ help
+ Controller Area Network (CAN) is a slow (up to 1Mbit/s) serial
+ communications protocol. Development of the CAN bus started in
+ 1983 at Robert Bosch GmbH, and the protocol was officially
+ released in 1986. The CAN bus was originally mainly for automotive,
+ but is 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.rst>.
+
+ If you want CAN support you should say Y here and also to the
+ specific driver for your controller(s) under the Network device
+ support section.
+
+if CAN
+
+config CAN_RAW
+ tristate "Raw CAN Protocol (raw access with CAN-ID filtering)"
+ default y
+ 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)"
+ default y
+ 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)"
+ default y
+ 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 "net/can/j1939/Kconfig"
+
+config CAN_ISOTP
+ tristate "ISO 15765-2:2016 CAN transport protocol"
+ help
+ CAN Transport Protocols offer support for segmented Point-to-Point
+ communication between CAN nodes via two defined CAN Identifiers.
+ As CAN frames can only transport a small amount of data bytes
+ (max. 8 bytes for 'classic' CAN and max. 64 bytes for CAN FD) this
+ segmentation is needed to transport longer Protocol Data Units (PDU)
+ as needed e.g. for vehicle diagnosis (UDS, ISO 14229) or IP-over-CAN
+ traffic.
+ This protocol driver implements data transfers according to
+ ISO 15765-2:2016 for 'classic' CAN and CAN FD frame types.
+ If you want to perform automotive vehicle diagnostic services (UDS),
+ say 'y'.
+
+endif