From c71593dd34ae1fd46777662a522a32cfde86f073 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Wed, 2 Jul 2014 17:37:28 +0300 Subject: [PATCH] Bluetooth: Remove only enabled entries with Remove Device command The Remove Device mgmt command is supposed to undo what the Add Device command does. An entry added by Add Device cannot have the HCI_AUTO_CONN_DISABLED auto_connect value, so we should treat this as an invalid entry to remove. This patch adds the necessary pieces to the Remove Device command handler so that it only removes entries which were added by Add Device. Signed-off-by: Johan Hedberg Signed-off-by: Marcel Holtmann --- net/bluetooth/mgmt.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index f7217f9eda0..574dd9f7c39 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -5079,6 +5079,7 @@ static int remove_device(struct sock *sk, struct hci_dev *hdev, hci_dev_lock(hdev); if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { + struct hci_conn_params *params; u8 addr_type; if (!bdaddr_type_is_le(cp->addr.type)) { @@ -5093,7 +5094,25 @@ static int remove_device(struct sock *sk, struct hci_dev *hdev, else addr_type = ADDR_LE_DEV_RANDOM; - hci_conn_params_del(hdev, &cp->addr.bdaddr, addr_type); + params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr, + addr_type); + if (!params) { + err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &cp->addr, sizeof(cp->addr)); + goto unlock; + } + + if (params->auto_connect == HCI_AUTO_CONN_DISABLED) { + err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &cp->addr, sizeof(cp->addr)); + goto unlock; + } + + hci_pend_le_conn_del(hdev, &cp->addr.bdaddr, addr_type); + list_del(¶ms->list); + kfree(params); device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type); } else { @@ -5104,7 +5123,7 @@ static int remove_device(struct sock *sk, struct hci_dev *hdev, goto unlock; } - hci_conn_params_clear_all(hdev); + hci_conn_params_clear_enabled(hdev); } err = cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_DEVICE, -- 2.46.0