Display current channel usage load in 'show bts' and 'show network'

This is just the load at one given instant.  We definitely also want to see
some averages and record the measurements in a database later.

1 files changed, 49 insertions, 0 deletions

diff --git a/openbsc/src/chan_alloc.c b/openbsc/src/chan_alloc.c
index c42b60b46..632860814 100644
--- a/openbsc/src/chan_alloc.c
+++ b/openbsc/src/chan_alloc.c
@@ -121,6 +121,7 @@ static const u_int8_t subslots_per_pchan[] = {
 	[GSM_PCHAN_TCH_F] = 1,
 	[GSM_PCHAN_TCH_H] = 2,
 	[GSM_PCHAN_SDCCH8_SACCH8C] = 8,
+	/* FIXME: what about dynamic TCH_F_TCH_H ? */
 };
 
 static struct gsm_lchan *
@@ -329,3 +330,51 @@ struct gsm_lchan *lchan_for_subscr(struct gsm_subscriber *subscr)
 
 	return NULL;
 }
+
+void bts_chan_load(struct pchan_load *cl, const struct gsm_bts *bts)
+{
+	struct gsm_bts_trx *trx;
+
+	llist_for_each_entry(trx, &bts->trx_list, list) {
+		int i;
+
+		/* skip administratively deactivated tranxsceivers */
+		if (trx->nm_state.availability != NM_AVSTATE_OK ||
+		    trx->bb_transc.nm_state.availability != NM_AVSTATE_OK)
+			continue;
+
+		for (i = 0; i < ARRAY_SIZE(trx->ts); i++) {
+			struct gsm_bts_trx_ts *ts = &trx->ts[i];
+			struct load_counter *pl = &cl->pchan[ts->pchan];
+			int j;
+
+			/* skip administratively deactivated timeslots */
+			if (ts->nm_state.availability != NM_AVSTATE_OK)
+				continue;
+
+			for (j = 0; j < subslots_per_pchan[ts->pchan]; j++) {
+				struct gsm_lchan *lchan = &ts->lchan[j];
+
+				pl->total++;
+
+				switch (lchan->state) {
+				case LCHAN_S_NONE:
+					break;
+				default:
+					pl->used++;
+					break;
+				}
+			}
+		}
+	}
+}
+
+void network_chan_load(struct pchan_load *pl, struct gsm_network *net)
+{
+	struct gsm_bts *bts;
+
+	memset(pl, 0, sizeof(*pl));
+
+	llist_for_each_entry(bts, &net->bts_list, list)
+		bts_chan_load(pl, bts);
+}