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osmo-msc
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bsc: Add module for handling BSSAP input 

The current implementation is a stub. The code from
bssap.c of on-waves/bsc-master will be migrated into
this new structure
This commit is contained in:
Holger Hans Peter Freyther 2010-11-09 23:28:33 +01:00
parent cf256d678f
commit 3485feb49b
4 changed files with 71 additions and 25 deletions
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3
openbsc/include/openbsc/osmo_bsc.h
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@ -30,5 +30,8 @@ int bsc_delete_connection(struct osmo_bsc_sccp_con *sccp);
int bsc_scan_bts_msg(struct gsm_subscriber_connection *conn, struct msgb *msg);
int bsc_scan_msc_msg(struct gsm_subscriber_connection *conn, struct msgb *msg);
int bsc_handle_udt(struct gsm_network *net, struct bsc_msc_connection *conn, struct msgb *msg, unsigned int length);
int bsc_handle_dt1(struct osmo_bsc_sccp_con *conn, struct msgb *msg, unsigned int len);
#endif

2
openbsc/src/bsc/Makefile.am
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@ -7,7 +7,7 @@ bin_PROGRAMS = osmo-bsc
osmo_bsc_SOURCES = osmo_bsc_main.c osmo_bsc_rf.c osmo_bsc_vty.c osmo_bsc_api.c \
osmo_bsc_grace.c osmo_bsc_msc.c osmo_bsc_sccp.c \
osmo_bsc_filter.c \
osmo_bsc_filter.c osmo_bsc_bssap.c \
$(top_srcdir)/src/debug.c $(top_srcdir)/src/bsc_msc.c \
$(top_srcdir)/src/bsc_init.c
osmo_bsc_LDADD = $(top_builddir)/src/libvty.a \

60
openbsc/src/bsc/osmo_bsc_bssap.c Normal file
View File

@ -0,0 +1,60 @@
/* GSM 08.08 BSSMAP handling */
/* (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2009-2010 by On-Waves
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <openbsc/osmo_bsc.h>
#include <openbsc/debug.h>
#include <osmocore/protocol/gsm_08_08.h>
int bsc_handle_udt(struct gsm_network *network,
struct bsc_msc_connection *conn,
struct msgb *msgb, unsigned int length)
{
struct bssmap_header *bs;
LOGP(DMSC, LOGL_DEBUG, "Incoming SCCP message ftom MSC: %s\n",
hexdump(msgb->l3h, length));
if (length < sizeof(*bs)) {
LOGP(DMSC, LOGL_ERROR, "The header is too short.\n");
return -1;
}
bs = (struct bssmap_header *) msgb->l3h;
if (bs->length < length - sizeof(*bs))
return -1;
switch (bs->type) {
case BSSAP_MSG_BSS_MANAGEMENT:
LOGP(DMSC, LOGL_ERROR, "BSS management not implemented.\n");
break;
default:
LOGP(DMSC, LOGL_ERROR, "Unimplemented msg type: %d\n", bs->type);
}
return 0;
}
int bsc_handle_dt1(struct osmo_bsc_sccp_con *conn,
struct msgb *msg, unsigned int len)
{
return -1;
}

31
openbsc/src/bsc/osmo_bsc_sccp.c
View File

@ -42,6 +42,10 @@ static LLIST_HEAD(active_connections);
static void msc_outgoing_sccp_data(struct sccp_connection *conn,
struct msgb *msg, unsigned int len)
{
struct osmo_bsc_sccp_con *bsc_con =
(struct osmo_bsc_sccp_con *) conn->data_ctx;
bsc_handle_dt1(bsc_con, msg, len);
}
static void msc_outgoing_sccp_state(struct sccp_connection *conn, int old_state)
@ -118,29 +122,8 @@ static int msc_sccp_accept(struct sccp_connection *connection, void *data)
static int msc_sccp_read(struct msgb *msgb, unsigned int length, void *data)
{
struct bssmap_header *bs;
LOGP(DMSC, LOGL_DEBUG, "Incoming SCCP message ftom MSC: %s\n",
hexdump(msgb->l3h, length));
if (length < sizeof(*bs)) {
LOGP(DMSC, LOGL_ERROR, "The header is too short.\n");
return -1;
}
bs = (struct bssmap_header *) msgb->l3h;
if (bs->length < length - sizeof(*bs))
return -1;
switch (bs->type) {
case BSSAP_MSG_BSS_MANAGEMENT:
LOGP(DMSC, LOGL_ERROR, "BSS management not implemented.\n");
break;
default:
LOGP(DMSC, LOGL_ERROR, "Unimplemented msg type: %d\n", bs->type);
}
return 0;
struct gsm_network *net = (struct gsm_network *) data;
return bsc_handle_udt(net, net->msc_data->msc_con, msgb, length);
}
int bsc_queue_for_msc(struct gsm_subscriber_connection *conn, struct msgb *msg)
@ -258,7 +241,7 @@ int osmo_bsc_sccp_init(struct gsm_network *gsmnet)
sccp_set_log_area(DSCCP);
sccp_system_init(msc_sccp_write_ipa, gsmnet);
sccp_connection_set_incoming(&sccp_ssn_bssap, msc_sccp_accept, NULL);
sccp_set_read(&sccp_ssn_bssap, msc_sccp_read, NULL);
sccp_set_read(&sccp_ssn_bssap, msc_sccp_read, gsmnet);
register_signal_handler(SS_MSC, handle_msc_signal, gsmnet);