mtp: Move the link code into a new file called links.

1 files changed, 94 insertions, 0 deletions

diff --git a/src/links.c b/src/links.c
new file mode 100644
index 0000000..cc0f358
--- /dev/null
+++ b/src/links.c
@@ -0,0 +1,94 @@
+/* link management code */
+/*
+ * (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2010-2011 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 <bsc_data.h>
+#include <cellmgr_debug.h>
+#include <mtp_data.h>
+#include <snmp_mtp.h>
+
+extern struct bsc_data bsc;
+
+void mtp_link_submit(struct mtp_link *link, struct msgb *msg)
+{
+	bsc.link.write(&bsc.link, msg);
+}
+
+void mtp_link_restart(struct mtp_link *link)
+{
+	LOGP(DINP, LOGL_ERROR, "Need to restart the SS7 link.\n");
+	bsc.link.reset(&bsc.link);
+}
+
+static void start_rest(void *start)
+{
+	bsc.setup = 1;
+
+	if (msc_init(&bsc, 1) != 0) {
+		fprintf(stderr, "Failed to init MSC part.\n");
+		exit(3);
+	}
+
+	bsc.link.start(&bsc.link);
+}
+
+int link_init(struct bsc_data *bsc)
+{
+	bsc->link.the_link = mtp_link_alloc();
+	bsc->link.the_link->dpc = bsc->dpc;
+	bsc->link.the_link->opc = bsc->opc;
+	bsc->link.the_link->sccp_opc = bsc->sccp_opc > -1 ? bsc->sccp_opc : bsc->opc;
+	bsc->link.the_link->link = 0;
+	bsc->link.the_link->sltm_once = bsc->once;
+	bsc->link.the_link->ni = bsc->ni_ni;
+	bsc->link.the_link->spare = bsc->ni_spare;
+	bsc->link.bsc = bsc;
+
+	if (!bsc->src_port) {
+		LOGP(DINP, LOGL_ERROR, "You need to set a UDP address.\n");
+		return -1;
+	}
+
+	LOGP(DINP, LOGL_NOTICE, "Using UDP MTP mode.\n");
+
+	/* setup SNMP first, it is blocking */
+	bsc->link.udp.session = snmp_mtp_session_create(bsc->udp_ip);
+	if (!bsc->link.udp.session)
+		return -1;
+
+	/* now connect to the transport */
+	if (link_udp_init(&bsc->link, bsc->src_port, bsc->udp_ip, bsc->udp_port) != 0)
+		return -1;
+
+	/*
+	 * We will ask the MTP link to be taken down for two
+	 * timeouts of the BSC to make sure we are missing the
+	 * SLTM and it begins a reset. Then we will take it up
+	 * again and do the usual business.
+	 */
+	snmp_mtp_deactivate(bsc->link.udp.session);
+	bsc->start_timer.cb = start_rest;
+	bsc->start_timer.data = &bsc;
+	bsc_schedule_timer(&bsc->start_timer, bsc->link.udp.reset_timeout, 0);
+	LOGP(DMSC, LOGL_NOTICE, "Making sure SLTM will timeout.\n");
+
+	return 0;
+}