From b219e3ac66183fc9771b94af931fb5fd41d586ec Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Thu, 6 Jul 2006 12:38:46 +0200 Subject: [PATCH] [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 --- include/net/bluetooth/hci_core.h | 6 +++ net/bluetooth/hci_conn.c | 8 +++- net/bluetooth/hci_sysfs.c | 79 +++++++++++++++++++++++++++++++- 3 files changed, 90 insertions(+), 3 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index d84855fe7336..263e42b68e8d 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -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)) diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 420ed4d7e57e..7e9515b41cc0 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -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; } diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c index 3ccb4b0b8fc2..58df4360d242 100644 --- a/net/bluetooth/hci_sysfs.c +++ b/net/bluetooth/hci_sysfs.c @@ -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) -- 2.20.1