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CONFIG_CAN_ISOTP: ISO 15765-2 CAN transport protocol

General informations

The Linux kernel configuration item CONFIG_CAN_ISOTP has multiple definitions:

ISO 15765-2 CAN transport protocol found in net/can/Kconfig

The configuration item CONFIG_CAN_ISOTP:

Help text

CAN Transport Protocols offer support for segmented Point-to-Point communication between CAN nodes via two defined CAN Identifiers. This protocol driver implements segmented data transfers for CAN CC (aka Classical CAN, CAN 2.0B) and CAN FD frame types which were introduced with ISO 15765-2:2016. As CAN frames can only transport a small amount of data bytes (max. 8 bytes for CAN CC 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.

ISO 15765-2:2016 CAN transport protocol found in net/can/Kconfig

The configuration item CONFIG_CAN_ISOTP:

Help text

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'.

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