From 3d049d27f5ab8d1b51bf02e752349df83774066c Mon Sep 17 00:00:00 2001
From: Max <msuraev@sysmocom.de>
Date: Mon, 9 Oct 2017 17:12:53 +0200
Subject: OML: consider RSL link state

OML link state is available via vty ("sh bts 0" command) and
ctrl ("oml-connection-state" RO variable).

When showing OML link state, take into consideration RSL link state as
well: if OML is up but RSL is missing show it as degraded.

That's implemented via BTS model-specific functions (currently Sysmo- and
Nano- BTS only)

Change-Id: I5952fc59e4d82e0aa627ad91d20f964d9559a4c4
Related: OS#2486
---
 src/libbsc/abis_nm.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'src/libbsc/abis_nm.c')

diff --git a/src/libbsc/abis_nm.c b/src/libbsc/abis_nm.c
index 9567cfa3a..f0dfe9e79 100644
--- a/src/libbsc/abis_nm.c
+++ b/src/libbsc/abis_nm.c
@@ -683,6 +683,34 @@ static int abis_nm_rx_lmt_event(struct msgb *mb)
 	return 0;
 }
 
+static inline bool all_trx_rsl_connected(const struct gsm_bts *bts)
+{
+	const struct gsm_bts_trx *trx;
+
+	llist_for_each_entry(trx, &bts->trx_list, list) {
+		if (!trx->rsl_link)
+			return false;
+	}
+
+	return true;
+}
+
+char *get_oml_status(const struct gsm_bts *bts)
+{
+	if (bts->oml_link)
+		return all_trx_rsl_connected(bts) ? "connected" : "degraded";
+
+	return "disconnected";
+}
+
+char *get_model_oml_status(const struct gsm_bts *bts)
+{
+	if (bts->model->oml_status)
+		return bts->model->oml_status(bts);
+
+	return "unknown";
+}
+
 void abis_nm_queue_send_next(struct gsm_bts *bts)
 {
 	int wait = 0;
-- 
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