[Bluetooth] Integrate low-level connections into the driver model
This patch integrates the low-level connections (ACL and SCO) into the
driver model. Every connection is presented as device with the parent
set to its host controller device.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 3ccb4b0..58df436 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -170,6 +170,32 @@
NULL
};
+static ssize_t show_conn_type(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct hci_conn *conn = dev_get_drvdata(dev);
+ return sprintf(buf, "%s\n", conn->type == ACL_LINK ? "ACL" : "SCO");
+}
+
+static ssize_t show_conn_address(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct hci_conn *conn = dev_get_drvdata(dev);
+ bdaddr_t bdaddr;
+ baswap(&bdaddr, &conn->dst);
+ return sprintf(buf, "%s\n", batostr(&bdaddr));
+}
+
+#define CONN_ATTR(_name,_mode,_show,_store) \
+struct device_attribute conn_attr_##_name = __ATTR(_name,_mode,_show,_store)
+
+static CONN_ATTR(type, S_IRUGO, show_conn_type, NULL);
+static CONN_ATTR(address, S_IRUGO, show_conn_address, NULL);
+
+static struct device_attribute *conn_attrs[] = {
+ &conn_attr_type,
+ &conn_attr_address,
+ NULL
+};
+
struct class *bt_class = NULL;
EXPORT_SYMBOL_GPL(bt_class);
@@ -181,8 +207,57 @@
static void bt_release(struct device *dev)
{
- struct hci_dev *hdev = dev_get_drvdata(dev);
- kfree(hdev);
+ void *data = dev_get_drvdata(dev);
+ kfree(data);
+}
+
+static void add_conn(void *data)
+{
+ struct hci_conn *conn = data;
+ int i;
+
+ device_register(&conn->dev);
+
+ for (i = 0; conn_attrs[i]; i++)
+ device_create_file(&conn->dev, conn_attrs[i]);
+}
+
+void hci_conn_add_sysfs(struct hci_conn *conn)
+{
+ struct hci_dev *hdev = conn->hdev;
+ bdaddr_t *ba = &conn->dst;
+
+ BT_DBG("conn %p", conn);
+
+ conn->dev.parent = &hdev->dev;
+ conn->dev.release = bt_release;
+
+ snprintf(conn->dev.bus_id, BUS_ID_SIZE,
+ "%s%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X",
+ conn->type == ACL_LINK ? "acl" : "sco",
+ ba->b[5], ba->b[4], ba->b[3],
+ ba->b[2], ba->b[1], ba->b[0]);
+
+ dev_set_drvdata(&conn->dev, conn);
+
+ INIT_WORK(&conn->work, add_conn, (void *) conn);
+
+ schedule_work(&conn->work);
+}
+
+static void del_conn(void *data)
+{
+ struct hci_conn *conn = data;
+ device_del(&conn->dev);
+}
+
+void hci_conn_del_sysfs(struct hci_conn *conn)
+{
+ BT_DBG("conn %p", conn);
+
+ INIT_WORK(&conn->work, del_conn, (void *) conn);
+
+ schedule_work(&conn->work);
}
int hci_register_sysfs(struct hci_dev *hdev)