From d29b8a4745cdf5ffed52c072a21fe5609fb23c28 Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <holger@moiji-mobile.com>
Date: Wed, 9 Jul 2014 15:22:21 +0200
Subject: [PATCH] bsc: Implement a way to relay a message to the remote MSC

This is analogue to the notification that is relayed locally and
now we have a way to relay a message back to the network.
---
 openbsc/src/osmo-bsc/osmo_bsc_ctrl.c | 41 ++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c b/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
index bc442893a..883205781 100644
--- a/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
+++ b/openbsc/src/osmo-bsc/osmo_bsc_ctrl.c
@@ -593,6 +593,44 @@ static int verify_net_notification(struct ctrl_cmd *cmd, const char *value, void
 	return 0;
 }
 
+CTRL_CMD_DEFINE(net_inform_msc, "inform-msc-v1");
+static int get_net_inform_msc(struct ctrl_cmd *cmd, void *data)
+{
+	cmd->reply = "There is nothing to read";
+	return CTRL_CMD_ERROR;
+}
+
+static int set_net_inform_msc(struct ctrl_cmd *cmd, void *data)
+{
+	struct gsm_network *net;
+	struct osmo_msc_data *msc;
+
+	net = cmd->node;
+	llist_for_each_entry(msc, &net->bsc_data->mscs, entry) {
+		struct ctrl_cmd *trap;
+
+		trap = ctrl_cmd_create(tall_bsc_ctx, CTRL_TYPE_TRAP);
+		if (!trap) {
+			LOGP(DCTRL, LOGL_ERROR, "Trap creation failed\n");
+			continue;
+		}
+
+		trap->id = "0";
+		trap->variable = "inform-msc-v1";
+		trap->reply = talloc_strdup(trap, cmd->value);
+		ctrl_cmd_send(&msc->msc_con->write_queue, trap);
+		talloc_free(trap);
+	}
+
+
+	return CTRL_CMD_HANDLED;
+}
+
+static int verify_net_inform_msc(struct ctrl_cmd *cmd, const char *value, void *data)
+{
+	return 0;
+}
+
 static int msc_signal_handler(unsigned int subsys, unsigned int signal,
 			void *handler_data, void *signal_data)
 {
@@ -646,6 +684,9 @@ int bsc_ctrl_cmds_install(struct gsm_network *net)
 	if (rc)
 		goto end;
 	rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_net_notification);
+	if (rc)
+		goto end;
+	rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_net_inform_msc);
 	if (rc)
 		goto end;
 	rc = osmo_signal_register_handler(SS_L_INPUT, &bts_connection_status_trap_cb, net);