[gprs] gb_proxy: Forward NS-RESET/NS-BLOCK/NS-UNBLOCK from SGSN to BTSs
diff --git a/openbsc/include/openbsc/gb_proxy.h b/openbsc/include/openbsc/gb_proxy.h
index 3b695e5..db236b5 100644
--- a/openbsc/include/openbsc/gb_proxy.h
+++ b/openbsc/include/openbsc/gb_proxy.h
@@ -37,4 +37,6 @@
/* Main input function for Gb proxy */
int gbprox_rcvmsg(struct msgb *msg, struct gprs_nsvc *nsvc, uint16_t ns_bvci);
+int gbprox_signal(unsigned int subsys, unsigned int signal,
+ void *handler_data, void *signal_data);
#endif
diff --git a/openbsc/src/gprs/gb_proxy.c b/openbsc/src/gprs/gb_proxy.c
index 3ed7fdf..3c63943 100644
--- a/openbsc/src/gprs/gb_proxy.c
+++ b/openbsc/src/gprs/gb_proxy.c
@@ -415,6 +415,38 @@
return rc;
}
+/* Signal handler for signals from NS layer */
+int gbprox_signal(unsigned int subsys, unsigned int signal,
+ void *handler_data, void *signal_data)
+{
+ struct ns_signal_data *nssd = signal_data;
+ struct gprs_nsvc *nsvc = nssd->nsvc;
+ struct gbprox_peer *peer;
+
+ if (subsys != SS_NS)
+ return 0;
+
+ /* We currently only care about signals from the SGSN */
+ if (!nsvc->remote_end_is_sgsn)
+ return 0;
+
+ /* iterate over all BTS peers and send the respective PDU */
+ llist_for_each_entry(peer, &gbprox_bts_peers, list) {
+ switch (signal) {
+ case S_NS_RESET:
+ gprs_ns_tx_reset(peer->nsvc, nssd->cause);
+ break;
+ case S_NS_BLOCK:
+ gprs_ns_tx_block(peer->nsvc, nssd->cause);
+ break;
+ case S_NS_UNBLOCK:
+ gprs_ns_tx_unblock(peer->nsvc);
+ break;
+ }
+ }
+ return 0;
+}
+
#include <vty/command.h>
diff --git a/openbsc/src/gprs/gb_proxy_main.c b/openbsc/src/gprs/gb_proxy_main.c
index 0054b78..72f1417 100644
--- a/openbsc/src/gprs/gb_proxy_main.c
+++ b/openbsc/src/gprs/gb_proxy_main.c
@@ -118,6 +118,7 @@
exit(1);
}
gbcfg.nsi = gbprox_nsi;
+ register_signal_handler(SS_NS, &gbprox_signal, NULL);
nsip_listen(gbprox_nsi, gbcfg.nsip_listen_port);
/* 'establish' the outgoing connection to the SGSN */