gb_proxy: Add ctrl interface and nsvc-state, gbproxy-state commands
This patch adds a control interface to osmo-gbproxy as well as the first
two commands to query the state of each NSVC and gbproxy peer.
The "nsvc-state" command replies with
nsei, nsvci, local state, role, remote state of all NSVCs.
The "gbproxy-state" command replies with
nsei, bvci, mcc, mnc, lac, rac, and state of each peer.
Entries are separated by a newline '\n' character. If there are no
entries an empty list is returned. This behaviour is similar to that of
the subscriber-list-active-v1 command in osmo-sgsn.
$ ./osmo_ctrl.py -d 127.0.0.1 -p 4263 -g nsvc-state
Got message: b'GET_REPLY 23 nsvc-state 101,101,DEAD,BLOCKED,SGSN,DEAD,UNBLOCKED\n'
$ ./osmo_ctrl.py -d 127.0.0.1 -p 4263 -g gbproxy-state
Got message: b'GET_REPLY 4871085901306801158 gbproxy-state '
Change-Id: I82c74fd0bfcb9ba4ec3619d9fdaa0cae201b3177
Ticket: OS#3281, SYS#4235
Sponsored-by: On-Waves ehf
diff --git a/src/gprs/gb_proxy_ctrl.c b/src/gprs/gb_proxy_ctrl.c
new file mode 100644
index 0000000..032d8d4
--- /dev/null
+++ b/src/gprs/gb_proxy_ctrl.c
@@ -0,0 +1,85 @@
+/* Control Interface Implementation for the Gb-proxy */
+/*
+ * (C) 2018 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
+ * All Rights Reserved
+ *
+ * Author: Daniel Willmann
+ *
+ * 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/core/talloc.h>
+
+
+#include <osmocom/gprs/gprs_bssgp.h>
+#include <osmocom/gprs/gprs_ns.h>
+
+#include <osmocom/ctrl/control_if.h>
+#include <osmocom/ctrl/control_cmd.h>
+#include <osmocom/sgsn/gb_proxy.h>
+#include <osmocom/sgsn/debug.h>
+
+extern vector ctrl_node_vec;
+
+static int get_nsvc_state(struct ctrl_cmd *cmd, void *data)
+{
+ struct gbproxy_config *cfg = data;
+ struct gprs_ns_inst *nsi = cfg->nsi;
+ struct gprs_nsvc *nsvc;
+
+ cmd->reply = talloc_strdup(cmd, "");
+
+ llist_for_each_entry(nsvc, &nsi->gprs_nsvcs, list) {
+ if (nsvc == nsi->unknown_nsvc)
+ continue;
+
+ cmd->reply = gprs_nsvc_state_append(cmd->reply, nsvc);
+ }
+
+ return CTRL_CMD_REPLY;
+}
+
+CTRL_CMD_DEFINE_RO(nsvc_state, "nsvc-state");
+
+static int get_gbproxy_state(struct ctrl_cmd *cmd, void *data)
+{
+ struct gbproxy_config *cfg = data;
+ struct gbproxy_peer *peer;
+
+ cmd->reply = talloc_strdup(cmd, "");
+
+ llist_for_each_entry(peer, &cfg->bts_peers, list) {
+ struct gprs_ra_id raid;
+ gsm48_parse_ra(&raid, peer->ra);
+
+ cmd->reply = talloc_asprintf_append(cmd->reply, "%u,%u,%u,%u,%u,%u,%s\n",
+ peer->nsei, peer->bvci,
+ raid.mcc, raid.mnc,
+ raid.lac, raid.rac,
+ peer->blocked ? "BLOCKED" : "UNBLOCKED");
+ }
+
+ return CTRL_CMD_REPLY;
+}
+
+CTRL_CMD_DEFINE_RO(gbproxy_state, "gbproxy-state");
+
+int gb_ctrl_cmds_install(void)
+{
+ int rc = 0;
+ rc |= ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_nsvc_state);
+ rc |= ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_gbproxy_state);
+ return rc;
+}