My name is Helmut and i have been dealing with the CAN protocol for some time now and am looking for information on how a CANFD message is structured in a pcapng file; who has information about this or can provide a corresponding trace file?
To see how a pcapng file is structured, see the pcapng specification. Packets in a pcapng file are probably stored in Enhanced Protocol Blocks.
The link-layer type in the Interface Description Block in pcapng files for interfaces carrying CAN packets will probably be LINKTYPE_LINUX_SLL or LINKTYPE_LINUX_SLL2. The "ARPHRD_ type" field would, as per those pages, have the value 0x000C for CAN frames and 0x000D for CAN FD frames.
Asked: 2020-02-04 10:09:47 +0000
Seen: 984 times
Last updated: Feb 04 '20
