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commit f28797a84df8d13743222b87e664cdeae450840c Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 19:09:43 2017 +0200

osmo-bsc: react on reset requests from MSC

The bsc side currently can not receive reset commands from an MSC. This patch adds required functionality to receive a reset command and acknowlege it properly. The effects are the same as with when sending resets (all drop all ongoing calls and sccp connections)

http://cgit.osmocom.org/openbsc/commit/?id=a29091aba81d0303b47dbdc7377bd2d8d...

commit a29091aba81d0303b47dbdc7377bd2d8db9a687c Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 17:40:01 2017 +0200

libcommon-cs: genralize a interface reset fsm

The AoIP standard also describes an MSC->BSC reset procedure. We currently do not implement it. However, the fsm that is used to issue the reset request from the bsc side is not generalized. This patch generalizes the code in order to be able to use the same code on the MSC side to perform a reset procedure from there.

http://cgit.osmocom.org/openbsc/commit/?id=37170a74eee6c19a2b8633c747887a3ac...

commit 37170a74eee6c19a2b8633c747887a3ac1b9fee2 Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 15:58:28 2017 +0200

fixup: remove unused counter

Forgot to remove the counter struct osmo_timer_list msc_reset_timer; Needs to be fixuped into the reset handling patches

http://cgit.osmocom.org/openbsc/commit/?id=163d2e3651eeb24618e4ae70d0b4be813...

commit 163d2e3651eeb24618e4ae70d0b4be813d7379f4 Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 14:06:18 2017 +0200

sccp-lite: remove old sccp-lite code

in osmo_bsc_sccp.c all code is commented out. There is no point in keeping the file. This commit deletes it.

http://cgit.osmocom.org/openbsc/commit/?id=d56f7d7d61b9539bdbf4b8ab39ab3233d...

commit d56f7d7d61b9539bdbf4b8ab39ab3233d026c277 Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 13:49:07 2017 +0200

osmo-bsc: Send USSD notification when an MSC loss is detected

the old sccp-lite based imlementation offered support for sending an USSD notification as soon as a loss of the MSC connection is detected. This is done before forcefully dropping the affected connection.

This commit ports the feature to the new libosmo-sigtran implementation.

NOTE: I do not know if this works and I also do not really understand how this is even possible. Sending an USSD notification would rquire the subscriber to be properly attached? When the MSC is lost this almost not possible since no backend to authenticate against is available.

http://cgit.osmocom.org/openbsc/commit/?id=42a59b8064bf19d9b0376a6bdf4b4e7a8...

commit 42a59b8064bf19d9b0376a6bdf4b4e7a860c793c Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 13:22:59 2017 +0200

cosmetic: make function names in a_iface_bssap more expressive.

The function names in a_iface_bssap.c are not very expressive. The problem not only exists on the API side, but also for static functions. This patch replaces the function names with more expressive names.

http://cgit.osmocom.org/openbsc/commit/?id=c137e86538a0b027f5be46c1ce7e09d6f...

commit c137e86538a0b027f5be46c1ce7e09d6f92848a4 Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 12:52:35 2017 +0200

cosmetic: more expressive function names in a_iface

The function names if the API function in a_iface.c are not very expressive. Besides of that, the prototypes are in the wrong header file. This commit gives the function more expressive names and moves the prototypes in the right header file.

http://cgit.osmocom.org/openbsc/commit/?id=55f00baeac572514a4585324b940b0d01...

commit 55f00baeac572514a4585324b940b0d01c2a0e46 Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 12:34:26 2017 +0200

fixup: return with value in void function

http://cgit.osmocom.org/openbsc/commit/?id=4caee3540d4d58eb6e5fadbf5bfaf7903...

commit 4caee3540d4d58eb6e5fadbf5bfaf7903348c961 Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 12:26:31 2017 +0200

mgcp: make bts base port configurable

Currently the rtp base port of the BTS is hardcoded (4000) and not configurable. This patch adds VTY configuration options to make it adjustable.

http://cgit.osmocom.org/openbsc/commit/?id=4aced69b42e2fb8f57b5c8611406149f4...

commit 4aced69b42e2fb8f57b5c8611406149f44410bc2 Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 11:43:44 2017 +0200

Revert "mgcp: make sure all endpoints are closed on startup"

Clearing all endpoints by sending a DLCX on startup has ben found to be a bit too offensive. It also will not help against inconsitancies that may occour during runtime (e.g. an overheard DLCX during regular call teardown).

This reverts commit b669ea94cb78fd9b56ee8dd9392538151349f8ba.

http://cgit.osmocom.org/openbsc/commit/?id=074d6f6a14df5e8057cfd280f0729ed31...

commit 074d6f6a14df5e8057cfd280f0729ed31cf24018 Author: Philipp Maier pmaier@sysmocom.de Date: Mon Jun 12 11:39:41 2017 +0200

mgcp: Make sure endpoint is free on CRCX

The MSC is aware of the assigned endpoints at all times, so it will not assign an occupied endpoint to someone else. However, if it has just restarted, there maybe lingering open endpoints.

This patch introduces a fairly simple soultion. Before a new endpoint is seized (CRCX), a DLCX is send in advance. If the endpoint was still occupied with a dead connection, it will be freed. If it was free anyway, the DLCX will just have no effect.

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Summary of changes: openbsc/include/openbsc/Makefile.am | 2 +- openbsc/include/openbsc/a_iface.h | 13 + openbsc/include/openbsc/a_iface_bssap.h | 11 +- .../openbsc/{osmo_bsc_reset.h => a_reset.h} | 36 ++- openbsc/include/openbsc/bsc_msc.h | 5 +- openbsc/include/openbsc/mgcpgw_client.h | 1 + openbsc/include/openbsc/msc_ifaces.h | 18 -- openbsc/include/openbsc/osmo_bsc_sigtran.h | 10 +- openbsc/src/libcommon-cs/Makefile.am | 1 + .../osmo_bsc_reset.c => libcommon-cs/a_reset.c} | 92 +++--- openbsc/src/libmgcp/mgcpgw_client.c | 5 +- openbsc/src/libmgcp/mgcpgw_client_vty.c | 21 ++ openbsc/src/libmsc/a_iface.c | 16 +- openbsc/src/libmsc/a_iface_bssap.c | 56 ++-- openbsc/src/libmsc/gsm_04_08.c | 5 +- openbsc/src/libmsc/gsm_subscriber.c | 3 +- openbsc/src/libmsc/msc_ifaces.c | 51 +-- openbsc/src/osmo-bsc/Makefile.am | 2 - openbsc/src/osmo-bsc/osmo_bsc_bssap.c | 25 +- openbsc/src/osmo-bsc/osmo_bsc_sccp.c | 351 --------------------- openbsc/src/osmo-bsc/osmo_bsc_sigtran.c | 70 +++- openbsc/src/osmo-msc/msc_main.c | 4 - 22 files changed, 278 insertions(+), 520 deletions(-) rename openbsc/include/openbsc/{osmo_bsc_reset.h => a_reset.h} (55%) rename openbsc/src/{osmo-bsc/osmo_bsc_reset.c => libcommon-cs/a_reset.c} (59%) delete mode 100644 openbsc/src/osmo-bsc/osmo_bsc_sccp.c

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