libmsc/gsm_09_11.c: introduce rate counters for NC_SS sessions
This change introduces some new rate counters for call-independent
SS/USSD connections. As OsmoMSC doesn't handle the messages itself,
and only responsible for dispatching messages between both
A and GSUP interfaces, the following is taken into account:
- MS-initiated and network-initiated requests to establish
a NC SS/USSD session (transaction) - "nc_ss:m{o|t}_requests";
- successfully established MS-initiated and network-initiated
SS/USSD sessions (transactions) - "nc_ss:m{o|t}_established".
Change-Id: I23c9475abc9951d82f3342fdc5aaa367836f7741
diff --git a/src/libmsc/gsm_09_11.c b/src/libmsc/gsm_09_11.c
index 96acd8c..2c5afb3 100644
--- a/src/libmsc/gsm_09_11.c
+++ b/src/libmsc/gsm_09_11.c
@@ -31,6 +31,7 @@
#include <stdbool.h>
#include <osmocom/core/linuxlist.h>
+#include <osmocom/core/rate_ctr.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/msgb.h>
#include <osmocom/gsm/tlv.h>
@@ -74,6 +75,9 @@
/* Reuse existing transaction, or create a new one */
trans = trans_find_by_id(conn, pdisc, tid);
if (!trans) {
+ /* Count MS-initiated attempts to establish a NC SS/USSD session */
+ rate_ctr_inc(&conn->network->msc_ctrs->ctr[MSC_CTR_NC_SS_MO_REQUESTS]);
+
/**
* According to GSM TS 04.80, section 2.4.2 "Register
* (mobile station to network direction)", the REGISTER
@@ -185,6 +189,10 @@
else
msc_subscr_conn_communicating(conn);
+ /* Count established MS-initiated NC SS/USSD sessions */
+ if (msg_type == GSM0480_MTYPE_REGISTER)
+ rate_ctr_inc(&conn->network->msc_ctrs->ctr[MSC_CTR_NC_SS_MO_ESTABLISHED]);
+
return 0;
error:
@@ -233,6 +241,9 @@
/* Sent to the MS, give ownership of ss_msg */
msc_tx_dtap(transt->conn, ss_msg);
transt->ss.msg = NULL;
+
+ /* Count established network-initiated NC SS/USSD sessions */
+ rate_ctr_inc(&conn->network->msc_ctrs->ctr[MSC_CTR_NC_SS_MT_ESTABLISHED]);
break;
case GSM_PAGING_EXPIRED:
case GSM_PAGING_BUSY:
@@ -386,6 +397,9 @@
/* Attempt to find DTAP-transaction */
trans = trans_find_by_callref(net, gsup_msg->session_id);
if (!trans) {
+ /* Count network-initiated attempts to establish a NC SS/USSD session */
+ rate_ctr_inc(&net->msc_ctrs->ctr[MSC_CTR_NC_SS_MT_REQUESTS]);
+
/* Attempt to establish a new transaction */
trans = establish_nc_ss_trans(net, vsub, gsup_msg);
if (!trans) {
@@ -464,5 +478,9 @@
if (trans_end)
trans_free(trans);
+ /* Count established network-initiated NC SS/USSD sessions */
+ if (gsup_msg->session_state == OSMO_GSUP_SESSION_STATE_BEGIN)
+ rate_ctr_inc(&net->msc_ctrs->ctr[MSC_CTR_NC_SS_MT_ESTABLISHED]);
+
return 0;
}