last touches for custom Lua dissector

[Ariel Burbaickij <ariel.burbaickij () gmail com>]

Hello community,
I have written a custom dissector for LTE related protocols and it runs
fine but there is one last piece that I would like to add to it. Context is
such: there is a wrapper (generic name) protocol and I call LTE dissector
in this manner:

local myrrc = Dissector.get("lte-rrc.dl.dcch")
local rrc_dl_dcch = myrrc:call(buffer(wrapper_protocol.length()):tvb(),
pinfo, tree)

or this

myrrc = Dissector.get("lte-rrc.ul.dcch")
local rrc_ul_dcch = myrrc:call(buffer(wrapper_protocol.length()):tvb(),
pinfo, tree)

and decode works just fine, however in protocol field in Wireshark's GUI I
get WRAPPER_PROOTOCOL as the name and I would like to see LTE RRC or
something similar in case of S1AP which is called like this:

  local sctp_tbl = DissectorTable.get ("sctp.ppi")
  local prot_s1ap = sctp_tbl:get_dissector(18)
  prot_s1ap:call(wrapper_protocol.length()):tvb(), pinfo, tree)

I do get S1AP as a protocol. length of wrapper_protocol is the same in all
three cases,

So, how can it be achieved foR LTE RRC and eventually NR RRC ?

Kind Regards
Ariel Burbaickij

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