From 703c2d6eb8f82c319d774ed7e2627f86045e0e02 Mon Sep 17 00:00:00 2001
From: Neels Hofmeyr <neels@hofmeyr.de>
Date: Thu, 16 Jun 2016 03:26:50 +0200
Subject: [PATCH] pcu_sock: add pcu_connected() to query PCU availability

Will be used in upcoming dyn PDCH switching.

Change-Id: I8031089ad5e9cb9690ca7e22facc53438f28e12a
---
 include/osmo-bts/pcu_if.h |  2 ++
 src/common/pcu_sock.c     | 10 ++++++++++
 2 files changed, 12 insertions(+)

diff --git a/include/osmo-bts/pcu_if.h b/include/osmo-bts/pcu_if.h
index 0c4fb6960..3ce4d0b24 100644
--- a/include/osmo-bts/pcu_if.h
+++ b/include/osmo-bts/pcu_if.h
@@ -19,4 +19,6 @@ int pcu_tx_pch_data_cnf(uint32_t fn, uint8_t *data, uint8_t len);
 int pcu_sock_init(const char *path);
 void pcu_sock_exit(void);
 
+bool pcu_connected(void);
+
 #endif /* _PCU_IF_H */
diff --git a/src/common/pcu_sock.c b/src/common/pcu_sock.c
index 7c835fb98..ea4267de4 100644
--- a/src/common/pcu_sock.c
+++ b/src/common/pcu_sock.c
@@ -922,3 +922,13 @@ int osmo_unixsock_listen(struct osmo_fd *bfd, int type, const char *path)
 	return 0;
 }
 
+bool pcu_connected(void) {
+	struct gsm_network *net = &bts_gsmnet;
+	struct pcu_sock_state *state = net->pcu_state;
+
+	if (!state)
+		return false;
+	if (state->conn_bfd.fd <= 0)
+		return false;
+	return true;
+}