Implement IuCS (large refactoring and addition)

osmo-nitb becomes osmo-msc
add DIUCS debug log constant
add iucs.[hc]
add msc vty, remove nitb vty
add libiudummy, to avoid linking Iu deps in tests
Use new msc_tx_dtap() instead of gsm0808_submit_dtap()
libmgcp: add mgcpgw client API
bridge calls via mgcpgw

mgcp: hack RAB success from nano3G: patch first RTP payload
The ip.access nano3G needs the first RTP payload's first two bytes to read hex
'e400', or it will reject the RAB assignment. Add flag
patched_first_rtp_payload to mgcp_rtp_state to detect the first RTP payload on
a stream, and overwrite its first bytes with e400. This should probably be
configurable, but seems to not harm other femto cells (as long as we patch only
the first RTP payload in each stream). Only do this when sending to the BTS
side.

Change-Id: Ie13ff348117e892d41b8355ab6c24915301eaeaf

1 files changed, 181 insertions, 0 deletions

diff --git a/openbsc/src/libmsc/msc_vty.c b/openbsc/src/libmsc/msc_vty.c
new file mode 100644
index 000000000..b6fff56af
--- /dev/null
+++ b/openbsc/src/libmsc/msc_vty.c
@@ -0,0 +1,181 @@
+/* MSC interface to quagga VTY */
+/* (C) 2016 by sysmocom s.m.f.c. GmbH <info@sysmocom.de>
+ * Based on OpenBSC interface to quagga VTY (libmsc/vty_interface_layer3.c)
+ * (C) 2009 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2009-2011 by Holger Hans Peter Freyther
+ * 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/>.
+ *
+ */
+
+/* NOTE: I would have liked to call this the MSC_NODE instead of the MSC_NODE,
+ * but MSC_NODE already exists to configure a remote MSC for osmo-bsc. */
+
+#include <inttypes.h>
+
+#include <osmocom/vty/command.h>
+
+#include <openbsc/vty.h>
+#include <openbsc/gsm_data.h>
+#include <openbsc/gsm_subscriber.h>
+#include <openbsc/vlr.h>
+#include <openbsc/iu.h>
+
+static struct cmd_node msc_node = {
+	MSC_NODE,
+	"%s(config-msc)# ",
+	1,
+};
+
+DEFUN(cfg_msc, cfg_msc_cmd,
+      "msc", "Configure MSC options")
+{
+	vty->node = MSC_NODE;
+	return CMD_SUCCESS;
+}
+
+/* Note: limit on the parameter length is set by internal vty code limitations */
+DEFUN(cfg_msc_subscr_random, cfg_msc_subscr_random_cmd,
+      "subscriber-create-on-demand random <1-9999999999> <2-9999999999>",
+      "Set random parameters for a new record when a subscriber is first seen.\n"
+      "Set random parameters for a new record when a subscriber is first seen.\n"
+      "Minimum for subscriber extension\n""Maximum for subscriber extension\n")
+{
+	struct gsm_network *gsmnet = gsmnet_from_vty(vty);
+	uint64_t mi = atoi(argv[0]), ma = atoi(argv[1]);
+	gsmnet->auto_create_subscr = true;
+	gsmnet->auto_assign_exten = true;
+	if (mi >= ma) {
+		vty_out(vty, "Incorrect range: %s >= %s, expected MIN < MAX%s",
+			argv[0], argv[1], VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	gsmnet->ext_min = mi;
+	gsmnet->ext_max = ma;
+        return CMD_SUCCESS;
+}
+
+DEFUN(cfg_msc_subscr_create, cfg_msc_subscr_create_cmd,
+      "subscriber-create-on-demand [no-extension]",
+      "Make a new record when a subscriber is first seen.\n"
+      "Do not automatically assign extension to created subscribers\n")
+{
+	struct gsm_network *gsmnet = gsmnet_from_vty(vty);
+	gsmnet->auto_create_subscr = true;
+	gsmnet->auto_assign_exten = argc ? false : true;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_msc_no_subscr_create, cfg_msc_no_subscr_create_cmd,
+      "no subscriber-create-on-demand",
+      NO_STR "Make a new record when a subscriber is first seen.\n")
+{
+	struct gsm_network *gsmnet = gsmnet_from_vty(vty);
+	gsmnet->auto_create_subscr = false;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_msc_assign_tmsi, cfg_msc_assign_tmsi_cmd,
+      "assign-tmsi",
+      "Assign TMSI during Location Updating.\n")
+{
+	struct gsm_network *gsmnet = gsmnet_from_vty(vty);
+	gsmnet->vlr->cfg.assign_tmsi = true;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_msc_no_assign_tmsi, cfg_msc_no_assign_tmsi_cmd,
+      "no assign-tmsi",
+      NO_STR "Assign TMSI during Location Updating.\n")
+{
+	struct gsm_network *gsmnet = gsmnet_from_vty(vty);
+	gsmnet->vlr->cfg.assign_tmsi = false;
+	return CMD_SUCCESS;
+}
+
+static int config_write_msc(struct vty *vty)
+{
+	struct gsm_network *gsmnet = gsmnet_from_vty(vty);
+
+	vty_out(vty, "msc%s", VTY_NEWLINE);
+	if (!gsmnet->auto_create_subscr)
+		vty_out(vty, " no subscriber-create-on-demand%s", VTY_NEWLINE);
+	else
+		vty_out(vty, " subscriber-create-on-demand%s%s",
+			gsmnet->auto_assign_exten ? "" : " no-extension",
+			VTY_NEWLINE);
+
+	if (gsmnet->ext_min != GSM_MIN_EXTEN || gsmnet->ext_max != GSM_MAX_EXTEN)
+		vty_out(vty, " subscriber-create-on-demand random %"PRIu64" %"
+			PRIu64"%s", gsmnet->ext_min, gsmnet->ext_max,
+			VTY_NEWLINE);
+	vty_out(vty, " %sassign-tmsi%s",
+		gsmnet->vlr->cfg.assign_tmsi? "" : "no ", VTY_NEWLINE);
+
+	mgcpgw_client_config_write(vty, " ");
+	iu_vty_config_write(vty, " ");
+
+	return CMD_SUCCESS;
+}
+
+static int config_write_net(struct vty *vty)
+{
+	struct gsm_network *gsmnet = gsmnet_from_vty(vty);
+
+	vty_out(vty, "network%s", VTY_NEWLINE);
+	vty_out(vty, " network country code %u%s", gsmnet->country_code, VTY_NEWLINE);
+	vty_out(vty, " mobile network code %u%s", gsmnet->network_code, VTY_NEWLINE);
+	vty_out(vty, " short name %s%s", gsmnet->name_short, VTY_NEWLINE);
+	vty_out(vty, " long name %s%s", gsmnet->name_long, VTY_NEWLINE);
+	vty_out(vty, " auth policy %s%s", gsm_auth_policy_name(gsmnet->auth_policy), VTY_NEWLINE);
+	vty_out(vty, " location updating reject cause %u%s",
+		gsmnet->reject_cause, VTY_NEWLINE);
+	vty_out(vty, " encryption a5 %u%s", gsmnet->a5_encryption, VTY_NEWLINE);
+	vty_out(vty, " rrlp mode %s%s", rrlp_mode_name(gsmnet->rrlp.mode),
+		VTY_NEWLINE);
+	vty_out(vty, " mm info %u%s", gsmnet->send_mm_info, VTY_NEWLINE);
+	if (gsmnet->tz.override != 0) {
+		if (gsmnet->tz.dst)
+			vty_out(vty, " timezone %d %d %d%s",
+				gsmnet->tz.hr, gsmnet->tz.mn, gsmnet->tz.dst,
+				VTY_NEWLINE);
+		else
+			vty_out(vty, " timezone %d %d%s",
+				gsmnet->tz.hr, gsmnet->tz.mn, VTY_NEWLINE);
+	}
+	if (gsmnet->t3212 == 0)
+		vty_out(vty, " no periodic location update%s", VTY_NEWLINE);
+	else
+		vty_out(vty, " periodic location update %u%s",
+			gsmnet->t3212 * 6, VTY_NEWLINE);
+
+	return CMD_SUCCESS;
+}
+
+void msc_vty_init(struct gsm_network *msc_network)
+{
+	common_cs_vty_init(msc_network, config_write_net);
+
+	install_element(CONFIG_NODE, &cfg_msc_cmd);
+	install_node(&msc_node, config_write_msc);
+	vty_install_default(MSC_NODE);
+	install_element(MSC_NODE, &cfg_msc_subscr_create_cmd);
+	install_element(MSC_NODE, &cfg_msc_subscr_random_cmd);
+	install_element(MSC_NODE, &cfg_msc_no_subscr_create_cmd);
+	install_element(MSC_NODE, &cfg_msc_assign_tmsi_cmd);
+	install_element(MSC_NODE, &cfg_msc_no_assign_tmsi_cmd);
+	mgcpgw_client_vty_init(MSC_NODE, &msc_network->mgcpgw.conf);
+	iu_vty_init(MSC_NODE, &msc_network->iu.rab_assign_addr_enc);
+}