Commit 9ecb3e24 authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
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Bluetooth: Restrict high speed support to SSP enabled controllers 



The support for Bluetooth High Speed can only be enabled on controllers
where also Secure Simple Pairing has been enabled. Trying to enable
high speed when SSP is disabled will result into an error. Disabling
SSP will at the same time disable high speed as well.

It is required to enforce this dependency on SSP since high speed
support is only defined for authenticated, unauthenticated and
debug link keys. These link key types require SSP.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 72ef0c1a

net/bluetooth/mgmt.c

+32 −10
Original line number Diff line number Diff line
@@ -1310,11 +1310,19 @@ static int set_ssp(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 
	hci_dev_lock(hdev);



	if (!hdev_is_powered(hdev)) {

		bool changed = false;

		bool changed;



		if (val != test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {

			change_bit(HCI_SSP_ENABLED, &hdev->dev_flags);

			changed = true;

		if (cp->val) {

			changed = !test_and_set_bit(HCI_SSP_ENABLED,

						    &hdev->dev_flags);

		} else {

			changed = test_and_clear_bit(HCI_SSP_ENABLED,

						     &hdev->dev_flags);

			if (!changed)

				changed = test_and_clear_bit(HCI_HS_ENABLED,

							     &hdev->dev_flags);

			else

				clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);

		}



		err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev);
@@ -1327,7 +1335,8 @@ static int set_ssp(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 
		goto failed;

	}



	if (mgmt_pending_find(MGMT_OP_SET_SSP, hdev)) {

	if (mgmt_pending_find(MGMT_OP_SET_SSP, hdev) ||

	    mgmt_pending_find(MGMT_OP_SET_HS, hdev)) {

		err = cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,

				 MGMT_STATUS_BUSY);

		goto failed;
@@ -1368,6 +1377,14 @@ static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) 
	if (status)

		return cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status);



	if (!lmp_ssp_capable(hdev))

		return cmd_status(sk, hdev->id, MGMT_OP_SET_HS,

				  MGMT_STATUS_NOT_SUPPORTED);



	if (!test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))

		return cmd_status(sk, hdev->id, MGMT_OP_SET_HS,

				  MGMT_STATUS_REJECTED);



	if (cp->val != 0x00 && cp->val != 0x01)

		return cmd_status(sk, hdev->id, MGMT_OP_SET_HS,

				  MGMT_STATUS_INVALID_PARAMS);
@@ -4403,8 +4420,10 @@ int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status) 
		u8 mgmt_err = mgmt_status(status);



		if (enable && test_and_clear_bit(HCI_SSP_ENABLED,

						 &hdev->dev_flags))

						 &hdev->dev_flags)) {

			clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);

			err = new_settings(hdev, NULL);

		}



		mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp,

				     &mgmt_err);
@@ -4413,11 +4432,14 @@ int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status) 
	}



	if (enable) {

		if (!test_and_set_bit(HCI_SSP_ENABLED, &hdev->dev_flags))

			changed = true;

		changed = !test_and_set_bit(HCI_SSP_ENABLED, &hdev->dev_flags);

	} else {

		if (test_and_clear_bit(HCI_SSP_ENABLED, &hdev->dev_flags))

			changed = true;

		changed = test_and_clear_bit(HCI_SSP_ENABLED, &hdev->dev_flags);

		if (!changed)

			changed = test_and_clear_bit(HCI_HS_ENABLED,

						     &hdev->dev_flags);

		else

			clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);

	}



	mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match);

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