Neels Hofmeyr
e2f24d53e4
Disable large parts of the code that depend on BSC presence. The code sections
disabled by #if BEFORE_MSCSPLIT shall be modified or dropped in the course of
adding the A-interface.
Don't set msg->lchan nor msg->dst.
Don't use lchan in libmsc.
Decouple lac from bts.
Prepare entry/exit point for MSC -> BSC and MSC -> RNC communication:
Add msc_ifaces.[hc], a_iface.c, with a general msc_tx_dtap() to redirect to
different interfaces depending on the actual subscriber connection.
While iu_tx() is going to be functional fairly soon, the a_tx() is going to be
just a dummy for some time (see comment).
Add Iu specific fields in gsm_subscriber_connection: the UE connection pointer
and an indicator for the Integrity Protection status on Iu (to be fully
implemented in later commits).
Add lac member to gsm_subscriber_connection, to allow decoupling from
bts->location_area_code. The conn->lac will actually be set in iu.c in an
upcoming commit ("add iucs.[hc]").
move to libcommon-cs: gsm48_extract_mi(), gsm48_paging_extract_mi().
libmsc: duplicate gsm0808 / gsm48 functions (towards BSC).
In osmo-nitb, libmsc would directly call the functions on the BSC level, not
always via the bsc_api. When separating libmsc from libbsc, some functions are
missing from the linkage.
Hence duplicate these functions to libmsc, add an msc_ prefix for clarity, also
add a _tx to gsm0808_cipher_mode():
* add msc_gsm0808_tx_cipher_mode() (dummy/stub)
* add msc_gsm48_tx_mm_serv_ack()
* add msc_gsm48_tx_mm_serv_rej()
Call these from libmsc instead of
* gsm0808_cipher_mode()
* gsm48_tx_mm_serv_ack()
* gsm48_tx_mm_serv_rej()
Also add a comment related to msc_gsm0808_tx_cipher_mode() in two places.
Remove internal RTP streaming code; OsmoNITB supported that, but for OsmoMSC,
this will be done with an external MGCP gateway.
Remove LCHAN_MODIFY from internal MNCC state machine.
Temporarily disable all paging to be able to link libmsc without libbsc.
Skip the paging part of channel_test because the paging is now disabled.
Employ fake paging shims in order for msc_vlr_tests to still work.
msc_compl_l3(): publish in .h, tweak return value. Use new libmsc enum values
for return val, to avoid dependency on libbsc headers. Make callable from
other scopes: publish in osmo_msc.h and remove 'static' in osmo_msc.c
add gsm_encr to subscr_conn
move subscr_request to gsm_subscriber.h
subscr_request_channel() -> subscr_request_conn()
move to libmsc: osmo_stats_vty_add_cmds()
gsm_04_08: remove apply_codec_restrictions()
gsm0408_test: use NULL for root ctx
move to libbsc: gsm_bts_neighbor()
move to libbsc: lchan_next_meas_rep()
move vty config for t3212 to network level (periodic lu)
remove unneccessary linking from some tests
remove handle_abisip_signal()
abis_rsl.c: don't use libvlr from libbsc
gsm_subscriber_connection: put the LAC here, so that it is available without
accessing conn->bts. In bsc_api.c, place this lac in conn for the sake of
transition: Iu and A will use this new field to pass the LAC around, but in a
completely separate OsmoBSC this is not actually needed. It can be removed
again from osmo-bsc.git when the time has come.
Siemens MRPCI: completely drop sending the MRPCI messages for now, they shall
be added in osmo-bsc once the A-Interface code has settled. See OS#2389.
Related: OS#1845 OS#2257 OS#2389
Change-Id: Id3705236350d5f69e447046b0a764bbabc3d493c
|
||
|---|---|---|
| contrib | ||
| debian | ||
| doc | ||
| include | ||
| m4 | ||
| src | ||
| tests | ||
| tools | ||
| .gitignore | ||
| .gitreview | ||
| .mailmap | ||
| AUTHORS | ||
| COPYING | ||
| Makefile.am | ||
| README | ||
| README.vty-tests | ||
| configure.ac | ||
| git-version-gen | ||
| openbsc.pc.in | ||
| osmoappdesc.py | ||
README
About OpenBSC ============= OpenBSC started as a minimalistic all-in-one implementation of the GSM Network, with particular emphasis on the functionality typically provided by the BSC, MSC, HLR, VLR and SMSC. Today it is a growing suite of libraries and programs, implementing protocol stacks and functional elements, including * OsmoBSC - a pure GSM BSC, speaking Abis/IP to the BTS and A/IP to the MSC * OsmoBSC-MGCP - MGCP helper to the OsmoBSC software * OsmoNITB - a BSC+MSC+VLR+HLR+SMSC "Network in the box". * OsmoMSC - a voice CN with A/IP and IuCS/IP towards the BSC and/or HNB-GW * OsmoSGSN - a GPRS SGSN with Gb/IP and IuPS/IP towards the PCU and/or HNB-GW * Osmo-GbProxy - a Proxy to aggregate many Gb links as one Gb link to the SGSN * OsmoBSCNAT - a gateway aggregating many A links as one A link to the MSC * OsmoGTPHUB - a hub aggregating many GTP links (between SGSN and GGSN) * ipaccess-utils - some tools to discover + configure ip.access nanoBTS * bs11_config - a tool to configure the Siemens BS-11 microBTS Various interfaces towards the BTS are supported, among which are: * Classic A-bis over E1 using a mISDN based E1 interface. In other words, you can connect existing GSM Base Transceiver Station (BTS) through E1 to OpenBSC. So far, we have made it work with the Siemens BS-11, various Ericsson RBS2xxx BTS models and the Nokia MetroSite. * A-bis over IP as used by the ip.access nanoBTS product family as well as the Open Source OsmoBTS software (by the same authors as OpenBSC). OsmoBTS in turn supports various transceiver hardware, including the sysmoBTS product family, as well as SDR transceivers supported by OsmoTRX, such as the UmTRX or USRP boardss. * IuCS and IuPS over IP towards an HNB-GW (see osmo-iuh) for UMTS (3G) voice and data links. Find OpenBSC online at http://openbsc.osmocom.org/ Harald Welte <laforge@gnumonks.org>