diff options
Diffstat (limited to 'net/bluetooth/hci_conn.c')
-rw-r--r-- | net/bluetooth/hci_conn.c | 49 |
1 files changed, 26 insertions, 23 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index faff6247ac8f..e3d7ae9e2edd 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -122,17 +122,30 @@ static void hci_reject_sco(struct hci_conn *conn) hci_send_cmd(conn->hdev, HCI_OP_REJECT_SYNC_CONN_REQ, sizeof(cp), &cp); } -void hci_disconnect(struct hci_conn *conn, __u8 reason) +int hci_disconnect(struct hci_conn *conn, __u8 reason) { struct hci_cp_disconnect cp; BT_DBG("hcon %p", conn); + /* When we are master of an established connection and it enters + * the disconnect timeout, then go ahead and try to read the + * current clock offset. Processing of the result is done + * within the event handling and hci_clock_offset_evt function. + */ + if (conn->type == ACL_LINK && conn->role == HCI_ROLE_MASTER) { + struct hci_dev *hdev = conn->hdev; + struct hci_cp_read_clock_offset cp; + + cp.handle = cpu_to_le16(conn->handle); + hci_send_cmd(hdev, HCI_OP_READ_CLOCK_OFFSET, sizeof(cp), &cp); + } + conn->state = BT_DISCONN; cp.handle = cpu_to_le16(conn->handle); cp.reason = reason; - hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); + return hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); } static void hci_amp_disconn(struct hci_conn *conn) @@ -325,25 +338,6 @@ static void hci_conn_timeout(struct work_struct *work) hci_amp_disconn(conn); } else { __u8 reason = hci_proto_disconn_ind(conn); - - /* When we are master of an established connection - * and it enters the disconnect timeout, then go - * ahead and try to read the current clock offset. - * - * Processing of the result is done within the - * event handling and hci_clock_offset_evt function. - */ - if (conn->type == ACL_LINK && - conn->role == HCI_ROLE_MASTER) { - struct hci_dev *hdev = conn->hdev; - struct hci_cp_read_clock_offset cp; - - cp.handle = cpu_to_le16(conn->handle); - - hci_send_cmd(hdev, HCI_OP_READ_CLOCK_OFFSET, - sizeof(cp), &cp); - } - hci_disconnect(conn, reason); } break; @@ -595,6 +589,7 @@ void hci_le_conn_failed(struct hci_conn *conn, u8 status) conn->dst_type); if (params && params->conn) { hci_conn_drop(params->conn); + hci_conn_put(params->conn); params->conn = NULL; } @@ -1290,11 +1285,16 @@ struct hci_chan *hci_chan_create(struct hci_conn *conn) BT_DBG("%s hcon %p", hdev->name, conn); + if (test_bit(HCI_CONN_DROP, &conn->flags)) { + BT_DBG("Refusing to create new hci_chan"); + return NULL; + } + chan = kzalloc(sizeof(*chan), GFP_KERNEL); if (!chan) return NULL; - chan->conn = conn; + chan->conn = hci_conn_get(conn); skb_queue_head_init(&chan->data_q); chan->state = BT_CONNECTED; @@ -1314,7 +1314,10 @@ void hci_chan_del(struct hci_chan *chan) synchronize_rcu(); - hci_conn_drop(conn); + /* Prevent new hci_chan's to be created for this hci_conn */ + set_bit(HCI_CONN_DROP, &conn->flags); + + hci_conn_put(conn); skb_queue_purge(&chan->data_q); kfree(chan); |