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[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>
This commit is contained in:
Marcel Holtmann 2006-07-06 12:38:46 +02:00 committed by David S. Miller
parent 4d0eb0049c
commit b219e3ac66
3 changed files with 90 additions and 3 deletions
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6
include/net/bluetooth/hci_core.h
View File

@ -165,6 +165,10 @@ struct hci_conn {
struct timer_list disc_timer;
struct timer_list idle_timer;
struct work_struct work;
struct device dev;
struct hci_dev *hdev;
void *l2cap_data;
void *sco_data;
@ -412,6 +416,8 @@ static inline int hci_recv_frame(struct sk_buff *skb)
int hci_register_sysfs(struct hci_dev *hdev);
void hci_unregister_sysfs(struct hci_dev *hdev);
void hci_conn_add_sysfs(struct hci_conn *conn);
void hci_conn_del_sysfs(struct hci_conn *conn);
#define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))

8
net/bluetooth/hci_conn.c
View File

@ -179,6 +179,8 @@ struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst)
if (hdev->notify)
hdev->notify(hdev, HCI_NOTIFY_CONN_ADD);
hci_conn_add_sysfs(conn);
tasklet_enable(&hdev->tx_task);
return conn;
@ -211,6 +213,8 @@ int hci_conn_del(struct hci_conn *conn)
tasklet_disable(&hdev->tx_task);
hci_conn_del_sysfs(conn);
hci_conn_hash_del(hdev, conn);
if (hdev->notify)
hdev->notify(hdev, HCI_NOTIFY_CONN_DEL);
@ -221,7 +225,9 @@ int hci_conn_del(struct hci_conn *conn)
hci_dev_put(hdev);
kfree(conn);
/* will free via device release */
put_device(&conn->dev);
return 0;
}

79
net/bluetooth/hci_sysfs.c
View File

@ -170,6 +170,32 @@ static struct device_attribute *bt_attrs[] = {
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 struct platform_device *bt_platform;
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)