From 396b3b62c9c1d2c55a4d53714e82627d803d0a3d Mon Sep 17 00:00:00 2001
From: Johan Hedberg <johan.hedberg@intel.com>
Date: Tue, 13 May 2014 10:48:01 +0300
Subject: [PATCH] core: Add API to monitor device disconnections

This patch adds an API to monitor devices disconnections, including the
reason for the disconnection. It paves the way to allow creating a
policy for reconnecting when disconnected.
---
 src/adapter.c | 26 +++++++++++++++++++++++++-
 src/adapter.h |  4 ++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/adapter.c b/src/adapter.c
index 25875de39..b38c813cb 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -97,6 +97,8 @@ static uint8_t mgmt_revision = 0;
 
 static GSList *adapter_drivers = NULL;
 
+static GSList *disconnect_list = NULL;
+
 struct link_key_info {
 	bdaddr_t bdaddr;
 	unsigned char key[16];
@@ -5396,6 +5398,16 @@ int adapter_bonding_attempt(struct btd_adapter *adapter, const bdaddr_t *bdaddr,
 	return 0;
 }
 
+static void disconnect_notify(struct btd_device *dev, uint8_t reason)
+{
+	GSList *l;
+
+	for (l = disconnect_list; l; l = g_slist_next(l)) {
+		btd_disconnect_cb disconnect_cb = l->data;
+		disconnect_cb(dev, reason);
+	}
+}
+
 static void dev_disconnected(struct btd_adapter *adapter,
 					const struct mgmt_addr_info *addr,
 					uint8_t reason)
@@ -5408,13 +5420,25 @@ static void dev_disconnected(struct btd_adapter *adapter,
 	DBG("Device %s disconnected, reason %u", dst, reason);
 
 	device = btd_adapter_find_device(adapter, &addr->bdaddr, addr->type);
-	if (device)
+	if (device) {
 		adapter_remove_connection(adapter, device, addr->type);
+		disconnect_notify(device, reason);
+	}
 
 	bonding_attempt_complete(adapter, &addr->bdaddr, addr->type,
 						MGMT_STATUS_DISCONNECTED);
 }
 
+void btd_add_disconnect_cb(btd_disconnect_cb func)
+{
+	disconnect_list = g_slist_append(disconnect_list, func);
+}
+
+void btd_remove_disconnect_cb(btd_disconnect_cb func)
+{
+	disconnect_list = g_slist_remove(disconnect_list, func);
+}
+
 static void disconnect_complete(uint8_t status, uint16_t length,
 					const void *param, void *user_data)
 {
diff --git a/src/adapter.h b/src/adapter.h
index 49eca11e1..88951975f 100644
--- a/src/adapter.h
+++ b/src/adapter.h
@@ -63,6 +63,10 @@ int adapter_init(void);
 void adapter_cleanup(void);
 void adapter_shutdown(void);
 
+typedef void (*btd_disconnect_cb) (struct btd_device *device, uint8_t reason);
+void btd_add_disconnect_cb(btd_disconnect_cb func);
+void btd_remove_disconnect_cb(btd_disconnect_cb func);
+
 struct btd_adapter *adapter_find(const bdaddr_t *sba);
 struct btd_adapter *adapter_find_by_id(int id);
 void adapter_foreach(adapter_cb func, gpointer user_data);
-- 
2.47.3