diff options
author | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2016-05-10 12:50:31 +0200 |
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committer | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2017-03-16 15:32:30 +0100 |
commit | bbfcb1843e80e43c4f5927346ffb1cb19b519613 (patch) | |
tree | 803c5a7b78980dfa23c11719f4458f109d5cf0bc /openbsc/src/libmsc/msc_ifaces.c | |
parent | 6b54fe21553138ad49cf8b0681ccadbdbb1c0bd3 (diff) |
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]").
Change-Id: Idf8020a30562426e8f939706bf5c2188d5a09798
Diffstat (limited to 'openbsc/src/libmsc/msc_ifaces.c')
-rw-r--r-- | openbsc/src/libmsc/msc_ifaces.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/openbsc/src/libmsc/msc_ifaces.c b/openbsc/src/libmsc/msc_ifaces.c new file mode 100644 index 000000000..160c90b95 --- /dev/null +++ b/openbsc/src/libmsc/msc_ifaces.c @@ -0,0 +1,51 @@ +/* Implementation for MSC decisions which interface to send messages out on. */ + +/* (C) 2016 by sysmocom s.m.f.c GmbH <info@sysmocom.de> + * + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <osmocom/core/logging.h> + +#include <openbsc/debug.h> +#include <openbsc/gsm_data.h> +#include <openbsc/msc_ifaces.h> + +static int msc_tx(struct gsm_subscriber_connection *conn, struct msgb *msg) +{ + switch (conn->via_ran) { + case RAN_GERAN_A: + msg->dst = conn; + return a_tx(msg); + + case RAN_UTRAN_IU: + msg->dst = conn->iu.ue_ctx; + return iu_tx(msg, 0); + + default: + LOGP(DMSC, LOGL_ERROR, + "msc_tx(): conn->via_ran invalid (%d)\n", + conn->via_ran); + return -1; + } +} + + +int msc_tx_dtap(struct gsm_subscriber_connection *conn, + struct msgb *msg) +{ + return msc_tx(conn, msg); +} |