Capturing Profisafe packets using Lua Wireshark dissector

Question

I am writing a Lua script to capture profisafe packets on wireshark.It is above the profinet layer in the stack.The wireshark dissect the profinet packets but does not dissect the profisafe.

For other protocols built on tcp or udp protocol one can do something like

local tcp_port = Dissector.get("tcp.port")
tcp_port:add(1234,foo_protocol)

to capture the packets that arises and received by the port 1234.

But profisafe is built on profinet and does not contain tcp or udp as the underlying layer.How to capture the packets in this case? I tried giving ethernet frame address in the place of port name but it did not work.

Answer 1

Use the menu Edit, Preferences, Protocols and search for PNIO: PNIO options

Then select the checkbox "Enable detailed PROFIsafe dissection" and define a directory, where the GSDML file of the PROFIsafe device is located.