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Linux CAN modules

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Subject	Linux CAN modules
From	Christopher Holland <chollandvoxx@gmail.com>
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Hi,

I recently struggled setting up CAN to work with the Beagle-bone.
Part of my struggle involved figuring out CAN modules. 
Well, I finally figured out that can-raw was really the only loaded module and is the only one needed by SocketCAN. I was not sure because SocketCAN doesn't identify which module it needs in order to run.

Now, I am wondering why I don't need can, or can-dev modules. 
The modules will not load with "modprobe can" or "modprobe can-dev". 
I am unsure of their purpose, except some websites mention that they are needed in order to get CAN to run correctly.
 I did find out that can-j1939 needs to be included in the kernel compilation. https://github.com/linux-can/can-utils/blob/master/can-j1939-install-kernel-module.md

Where can I find out information about CAN modules can and can-dev?

can: CAN protocol module.
can-dev: Standard library for CAN drivers.
can-raw: Offers access to the CAN bus via the BSD socket API.
can-bcm: Broadcast Manager module, offers content filtering, timeout monitoring, sending of RTR frames, and cyclic CAN messages without permanent user interaction.
can-j1939: Available since our BSP 5, giving support for the CAN J1939 standard.
can-gw: CAN gateway module, used to route CAN frames.
vcan: Virtual Local CAN interface.

$ lsmod | grep can
can_gw                 20480  0
can_bcm                24576  0
slcan                  16384  0
vcan                   16384  0
can_raw                20480  1

Thanks,

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Linux CAN modules Christopher Holland <chollandvoxx@gmail.com> - 2023-03-21 11:40 -0700

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