From 7d0db0a373195385a2e0b19d1f5e4b186fdcffac Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Mon, 14 Jul 2008 20:13:51 +0200 Subject: [PATCH] [Bluetooth] Use a more unique bus name for connections When attaching Bluetooth low-level connections to the bus, the bus name is constructed from the remote address since at that time the connection handle is not assigned yet. This has worked so far, but also caused a lot of troubles. It is better to postpone the creation of the sysfs entry to the time when the connection actually has been established and then use its connection handle as unique identifier. This also fixes the case where two different adapters try to connect to the same remote device. Signed-off-by: Marcel Holtmann --- net/bluetooth/hci_conn.c | 8 +++++--- net/bluetooth/hci_event.c | 7 +++++++ net/bluetooth/hci_sysfs.c | 8 ++------ 3 files changed, 14 insertions(+), 9 deletions(-) diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 0d4b8aeb8e09..ca8d05245ca0 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -245,8 +245,6 @@ 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; @@ -278,12 +276,14 @@ int hci_conn_del(struct hci_conn *conn) } tasklet_disable(&hdev->tx_task); + hci_conn_hash_del(hdev, conn); if (hdev->notify) hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); + tasklet_enable(&hdev->tx_task); + skb_queue_purge(&conn->data_q); - hci_conn_del_sysfs(conn); return 0; } @@ -532,6 +532,8 @@ void hci_conn_hash_flush(struct hci_dev *hdev) c->state = BT_CLOSED; + hci_conn_del_sysfs(c); + hci_proto_disconn_ind(c, 0x16); hci_conn_del(c); } diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 64668e2656a5..0e3db289f4be 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -874,6 +874,8 @@ static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *s } else conn->state = BT_CONNECTED; + hci_conn_add_sysfs(conn); + if (test_bit(HCI_AUTH, &hdev->flags)) conn->link_mode |= HCI_LM_AUTH; @@ -1011,6 +1013,9 @@ static inline void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); if (conn) { conn->state = BT_CLOSED; + + hci_conn_del_sysfs(conn); + hci_proto_disconn_ind(conn, ev->reason); hci_conn_del(conn); } @@ -1643,6 +1648,8 @@ static inline void hci_sync_conn_complete_evt(struct hci_dev *hdev, struct sk_bu if (!ev->status) { conn->handle = __le16_to_cpu(ev->handle); conn->state = BT_CONNECTED; + + hci_conn_add_sysfs(conn); } else conn->state = BT_CLOSED; diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c index a18871e01582..844ca5f1b2d4 100644 --- a/net/bluetooth/hci_sysfs.c +++ b/net/bluetooth/hci_sysfs.c @@ -311,7 +311,6 @@ static void add_conn(struct work_struct *work) 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); @@ -320,11 +319,8 @@ void hci_conn_add_sysfs(struct hci_conn *conn) 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]); + snprintf(conn->dev.bus_id, BUS_ID_SIZE, "%s:%d", + hdev->name, conn->handle); dev_set_drvdata(&conn->dev, conn); -- GitLab