From 162a3bac8d007aae3d1ba9da9b0d0b9ecfef87cc Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Wed, 14 Jan 2015 15:43:11 -0800 Subject: [PATCH] Bluetooth: Bind the SMP channel registration to management power state When the controller gets powered on via the management interface, then register the supported SMP channels. There is no point in registering these channels earlier since it is not know what identity address the controller is going to operate with. When powering down a controller unregister all SMP channels. This is required since a powered down controller is allowed to change its identity address. In addition the SMP channels are only available when the controller is powered via the management interface. When using legacy ioctl, then Bluetooth Low Energy is not supported and registering kernel side SMP integration may actually cause confusion. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- net/bluetooth/hci_core.c | 6 +++--- net/bluetooth/mgmt.c | 9 +++++++++ 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index c041973..34c17a0 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -933,10 +933,8 @@ static int __hci_init(struct hci_dev *hdev) if (lmp_bredr_capable(hdev)) hci_debugfs_create_bredr(hdev); - if (lmp_le_capable(hdev)) { + if (lmp_le_capable(hdev)) hci_debugfs_create_le(hdev); - smp_register(hdev); - } return 0; } @@ -2133,6 +2131,8 @@ static void hci_power_off(struct work_struct *work) BT_DBG("%s", hdev->name); hci_dev_do_close(hdev); + + smp_unregister(hdev); } static void hci_discov_off(struct work_struct *work) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index cae6126..f5c4d2e 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -6232,6 +6232,15 @@ static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode) BT_DBG("status 0x%02x", status); + if (!status) { + /* Register the available SMP channels (BR/EDR and LE) only + * when successfully powering on the controller. This late + * registration is required so that LE SMP can clearly + * decide if the public address or static address is used. + */ + smp_register(hdev); + } + hci_dev_lock(hdev); mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); -- 2.7.4