Title: Dissectors for SMS over GPRS-LLC
IMHO the gsm_a is really about four protocol
dissectors which are too inter-mixed in the one huge file, and should really all
be in separate files and with "proper" wireshark linkage between them. The clue
is in the name: it contais the set of protocols carried over the A interface,
not one protocol.
I'd support (and might be able to help with) such a
separation.
Neil
Hi,
>some SMS
Control Protocol (SMS CP) fields are included in GSM A DTAP dissector, but not
the whole protocol.
Should all SMS-CP dissection be done by the new dissector or perhaps
the code moved into packet-gsm_a.c ?
Regards
Anders
Hi
SMS msg can be carried over packet
switched GPRS, and I am trying to have Wireshark decode SMS carried on GPRS
LLC protocol (SAPI 7).
The stack is the
following:
-------------------
| sms msg
|
-------------------
| sms T-PDU |
--> dissector exists
(gsm_sms) in packet-gsm_sms.c
-------------------
| sms
RP |
--> dissector exists
(gsm_a_rp) in packet-gsm_a.c
-------------------
| sms CP
|
-------------------
| GPRS LLC |
--> dissector exists
(gprs-llc) in packet-gprs-llc.c
-------------------
some SMS Control Protocol (SMS CP)
fields are included in GSM A DTAP dissector, but not the whole protocol.
So I basically wrote a small plugin
for SMS CP -following the dev guidelines-, and linked to GPRS-LLC and SMS-RP
and it works fine.
The questions are:
- is there any interest in having
this submitted back to the Wireshark source ?
- if it is the case, what is the best practice
(plugin, native) and recommendations for the dissector calls - restrain the
calls to be within the new protocol code, or rather use call_dissector() etc
in other dissectors, which implies a small diff on other dissectors
too.
Thks, and btw I found the developper doc extremely useful
-many thks to the author(s).
Cyrille
