# # 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 . 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.