Store GPRS MOs directly under BTS SiteMgr object

The only real 1-1 relationship between BTS NM objects is the one between
GPRS Cell and BTS (which is actually a BTS cell).
In our current osmo-bts implementation we don't care much since we only
handle 1-cell BTSses, but let's make the data structure organization
more generic.

Implementation notes:
The gsm_bts_sm is moved to its own file, APIs to allocate are added and
the new public object is hooked correctly in the allocation process of
osmo-bsc.

Change-Id: I06461b7784fa2a78de37383406e35beae85fbad8

1 files changed, 85 insertions, 0 deletions

diff --git a/src/osmo-bsc/bts_sm.c b/src/osmo-bsc/bts_sm.c
new file mode 100644
index 000000000..a016124d9
--- /dev/null
+++ b/src/osmo-bsc/bts_sm.c
@@ -0,0 +1,85 @@
+/* (C) 2008-2018 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2020 by sysmocom s.f.m.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/gsm/abis_nm.h>
+
+#include <osmocom/bsc/gsm_data.h>
+#include <osmocom/bsc/bts.h>
+#include <osmocom/bsc/debug.h>
+#include <osmocom/bsc/nm_common_fsm.h>
+
+static const uint8_t bts_nse_timer_default[] = { 3, 3, 3, 3, 30, 3, 10 };
+
+static int gsm_bts_sm_talloc_destructor(struct gsm_bts_sm *bts_sm)
+{
+	if (bts_sm->mo.fi) {
+		osmo_fsm_inst_free(bts_sm->mo.fi);
+		bts_sm->mo.fi = NULL;
+	}
+	return 0;
+}
+
+struct gsm_bts_sm *gsm_bts_sm_alloc(struct gsm_network *net, uint8_t bts_num)
+{
+	struct gsm_bts_sm *bts_sm = talloc_zero(net, struct gsm_bts_sm);
+	struct gsm_bts *bts;
+	int i;
+	if (!bts_sm)
+		return NULL;
+
+	talloc_set_destructor(bts_sm, gsm_bts_sm_talloc_destructor);
+	bts_sm->mo.fi = osmo_fsm_inst_alloc(&nm_bts_sm_fsm, bts_sm, bts_sm,
+					    LOGL_INFO, NULL);
+	osmo_fsm_inst_update_id_f(bts_sm->mo.fi, "bts_sm");
+
+	bts = gsm_bts_alloc(net, bts_sm, bts_num);
+	if (!bts) {
+		talloc_free(bts_sm);
+		return NULL;
+	}
+	bts_sm->bts[0] = bts;
+
+	gsm_mo_init(&bts_sm->mo, bts, NM_OC_SITE_MANAGER, 0xff, 0xff, 0xff);
+
+	for (i = 0; i < ARRAY_SIZE(bts_sm->gprs.nsvc); i++) {
+		bts_sm->gprs.nsvc[i].bts = bts;
+		bts_sm->gprs.nsvc[i].id = i;
+		gsm_mo_init(&bts_sm->gprs.nsvc[i].mo, bts, NM_OC_GPRS_NSVC,
+				bts->nr, i, 0xff);
+	}
+	memcpy(&bts_sm->gprs.nse.timer, bts_nse_timer_default,
+		sizeof(bts_sm->gprs.nse.timer));
+	gsm_mo_init(&bts_sm->gprs.nse.mo, bts, NM_OC_GPRS_NSE,
+			bts->nr, 0xff, 0xff);
+
+	return bts_sm;
+}
+
+void gsm_bts_sm_mo_reset(struct gsm_bts_sm *bts_sm)
+{
+	int i;
+	gsm_abis_mo_reset(&bts_sm->mo);
+
+	gsm_abis_mo_reset(&bts_sm->gprs.nse.mo);
+	for (i = 0; i < ARRAY_SIZE(bts_sm->gprs.nsvc); i++)
+		gsm_abis_mo_reset(&bts_sm->gprs.nsvc[i].mo);
+
+	gsm_bts_mo_reset(bts_sm->bts[0]);
+}