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
Enable MSC specific CTRL commands, bsc_base_ctrl_cmds_install() still needs to
be split up.
Change-Id: I5b5b6a9678b458affa86800afb1ec726e66eed88
diff --git a/src/libmsc/gsm_subscriber.c b/src/libmsc/gsm_subscriber.c
index 69d79b0..ac6c96a 100644
--- a/src/libmsc/gsm_subscriber.c
+++ b/src/libmsc/gsm_subscriber.c
@@ -40,6 +40,9 @@
#include <openbsc/db.h>
#include <openbsc/chan_alloc.h>
#include <openbsc/vlr.h>
+#include <openbsc/iu.h>
+#include <openbsc/osmo_msc.h>
+#include <openbsc/msc_ifaces.h>
int subscr_paging_dispatch(unsigned int hooknum, unsigned int event,
struct msgb *msg, void *data, void *param)
@@ -49,27 +52,41 @@
struct vlr_subscr *vsub = param;
struct paging_signal_data sig_data;
- OSMO_ASSERT(vsub && vsub->cs.is_paging);
+ OSMO_ASSERT(vsub);
+ OSMO_ASSERT(hooknum == GSM_HOOK_RR_PAGING);
+ OSMO_ASSERT(!(conn && (conn->vsub != vsub)));
+ OSMO_ASSERT(!((event == GSM_PAGING_SUCCEEDED) && !conn));
- /* FIXME: implement stop paging in libmsc;
- * faking it for the unit tests to still work */
- msc_fake_paging_request_stop(vsub);
+ LOGP(DPAG, LOGL_DEBUG, "Paging %s for %s (event=%d)\n",
+ event == GSM_PAGING_SUCCEEDED ? "success" : "failure",
+ vlr_subscr_name(vsub), event);
+
+ if (!vsub->cs.is_paging) {
+ LOGP(DPAG, LOGL_ERROR,
+ "Paging Response received for subscriber"
+ " that is not paging.\n");
+ return -EINVAL;
+ }
+
+ if (event == GSM_PAGING_SUCCEEDED)
+ msc_stop_paging(vsub);
/* Inform parts of the system we don't know */
- sig_data.vsub = vsub;
- sig_data.bts = conn ? conn->bts : NULL;
- sig_data.conn = conn;
+ sig_data.vsub = vsub;
+ sig_data.conn = conn;
sig_data.paging_result = event;
- osmo_signal_dispatch(
- SS_PAGING,
- event == GSM_PAGING_SUCCEEDED ?
- S_PAGING_SUCCEEDED : S_PAGING_EXPIRED,
- &sig_data
- );
+ osmo_signal_dispatch(SS_PAGING,
+ event == GSM_PAGING_SUCCEEDED ?
+ S_PAGING_SUCCEEDED : S_PAGING_EXPIRED,
+ &sig_data);
llist_for_each_entry_safe(request, tmp, &vsub->cs.requests, entry) {
llist_del(&request->entry);
- request->cbfn(hooknum, event, msg, data, request->param);
+ if (request->cbfn) {
+ LOGP(DPAG, LOGL_DEBUG, "Calling paging cbfn.\n");
+ request->cbfn(hooknum, event, msg, data, request->param);
+ } else
+ LOGP(DPAG, LOGL_DEBUG, "Paging without action.\n");
talloc_free(request);
}
@@ -79,21 +96,48 @@
return 0;
}
-struct subscr_request *subscr_request_conn(struct vlr_subscr *vsub, int channel_type, gsm_cbfn *cbfn,
- void *param)
+int msc_paging_request(struct vlr_subscr *vsub)
+{
+ /* The subscriber was last seen in subscr->lac. Find out which
+ * BSCs/RNCs are responsible and send them a paging request via open
+ * SCCP connections (if any). */
+ /* TODO Implementing only RNC paging, since this is code on the iu branch.
+ * Need to add BSC paging at some point. */
+ switch (vsub->cs.attached_via_ran) {
+ case RAN_GERAN_A:
+ return a_page(vsub->imsi, vsub->tmsi, vsub->lac);
+ case RAN_UTRAN_IU:
+ return iu_page_cs(vsub->imsi,
+ vsub->tmsi == GSM_RESERVED_TMSI?
+ NULL : &vsub->tmsi,
+ vsub->lac);
+ default:
+ break;
+ }
+
+ LOGP(DPAG, LOGL_ERROR, "%s: Cannot page, subscriber not attached\n",
+ vlr_subscr_name(vsub));
+ return -EINVAL;
+}
+
+/*! \brief Start a paging request for vsub, call cbfn(param) when done.
+ * \param vsub subscriber to page.
+ * \param cbfn function to call when the conn is established.
+ * \param param caller defined param to pass to cbfn().
+ * \param label human readable label of the request kind used for logging.
+ */
+struct subscr_request *subscr_request_conn(struct vlr_subscr *vsub,
+ gsm_cbfn *cbfn, void *param,
+ const char *label)
{
int rc;
struct subscr_request *request;
/* Start paging.. we know it is async so we can do it before */
if (!vsub->cs.is_paging) {
- LOGP(DMM, LOGL_DEBUG, "Subscriber %s not paged yet.\n",
+ LOGP(DMM, LOGL_DEBUG, "Subscriber %s not paged yet, start paging.\n",
vlr_subscr_name(vsub));
-
- /* FIXME: implement paging in libmsc;
- * faking it for the unit tests to still work */
- rc = msc_fake_paging_request(vsub);
-
+ rc = msc_paging_request(vsub);
if (rc <= 0) {
LOGP(DMM, LOGL_ERROR, "Subscriber %s paging failed: %d\n",
vlr_subscr_name(vsub), rc);
@@ -102,6 +146,9 @@
/* reduced on the first paging callback */
vlr_subscr_get(vsub);
vsub->cs.is_paging = true;
+ } else {
+ LOGP(DMM, LOGL_DEBUG, "Subscriber %s already paged.\n",
+ vlr_subscr_name(vsub));
}
/* TODO: Stop paging in case of memory allocation failure */