Wireshark-commits: [Wireshark-commits] master ec10752: BSSMAP: Introduce Osmocom Osmux Support and
URL: https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=ec10752adb786fc3478a8dc04d091571c18100a3
Submitter: "Alexis La Goutte <alexis.lagoutte@xxxxxxxxx>"
Changed: branch: master
Repository: wireshark
Commits:
ec10752 by Pau Espin Pedrol (pespin@xxxxxxxxxxx):
BSSMAP: Introduce Osmocom Osmux Support and CID extension IE
References:
https://git.osmocom.org/libosmocore/commit/?id=18506c850c3bbcbfa814e07dc02a17fdb5f7bb9a
https://osmocom.org/issues/2551
IE GSM0808_IE_OSMO_OSMUX_SUPPORT (T, 1 byte) is sent in AoIP appended to
BSSMAP RESET in order to announce the peer that its MGW supports handling
Osmux streams upon call set up.
IE GSM0808_IE_OSMO_OSMUX_CID (TV, T 1 byte & V 1 byte) is sent in AoIP
during call set up:
* MSC->BSC Assignment Request
* BSC->MSC Assignemnt Complete
The 1 byte value contains the local Osmux CID, aka the recvCID aka CID where the
peer sending the Assign Req/Compl will look for Osmux frames on that
call. Hence, the peer receiving this CID value must use it to send Osmux
frames for that call.
As a result, a given call leg BSC<->MSC can have one different Osmux CID
per direction. For example:
* MS => MGW_BSC ==CID 0==> MGW_MSC
* MS <= MGW_BSC <=CID 1=== MGW_MSC
This allows for setups with 256 call legs per BSC on scenarios where NAT
is not a problem, where MSC can have a pool of 256 CID per MGW_BSC (or
remote peer).
Change-Id: Idc7a59a112c1eade2a056bc93230d580f58dda80
Reviewed-on: https://code.wireshark.org/review/33668
Petri-Dish: Alexis La Goutte <alexis.lagoutte@xxxxxxxxx>
Tested-by: Petri Dish Buildbot
Reviewed-by: Alexis La Goutte <alexis.lagoutte@xxxxxxxxx>
Actions performed:
from 737b7eb Qt: Handle ApplicationPaletteChange events in the welcome page.
add ec10752 BSSMAP: Introduce Osmocom Osmux Support and CID extension IE
Summary of changes:
epan/dissectors/packet-gsm_a_bssmap.c | 209 +++++++++++++++++++++++++++++++++-
epan/dissectors/packet-gsm_a_common.h | 93 +++++++++++++++
2 files changed, 301 insertions(+), 1 deletion(-)
