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Commit bfaf8c9f authored by Johan Hedberg's avatar Johan Hedberg Committed by Marcel Holtmann
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Bluetooth: Convert Set Discoverable to use an asynchronous request 



This patch converts Set Discoverable to use an asynchronous request
along with its own completion callback. This is necessary for splitting
raw HCI socket use cases from mgmt, as well as for enabling the hooking
up of Advertising parameters together with the HCI_DISCOVERABLE flag
(coming in later patches).

Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent aa8af46e

net/bluetooth/mgmt.c

+54 −9
Original line number Diff line number Diff line
@@ -935,11 +935,52 @@ static u8 mgmt_le_support(struct hci_dev *hdev) 
		return MGMT_STATUS_SUCCESS;

}



static void set_discoverable_complete(struct hci_dev *hdev, u8 status)

{

	struct pending_cmd *cmd;

	struct mgmt_mode *cp;

	bool changed;



	BT_DBG("status 0x%02x", status);



	hci_dev_lock(hdev);



	cmd = mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);

	if (!cmd)

		goto unlock;



	if (status) {

		u8 mgmt_err = mgmt_status(status);

		cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err);

		goto remove_cmd;

	}



	cp = cmd->param;

	if (cp->val)

		changed = !test_and_set_bit(HCI_DISCOVERABLE,

					    &hdev->dev_flags);

	else

		changed = test_and_clear_bit(HCI_DISCOVERABLE,

					     &hdev->dev_flags);



	send_settings_rsp(cmd->sk, MGMT_OP_SET_DISCOVERABLE, hdev);



	if (changed)

		new_settings(hdev, cmd->sk);



remove_cmd:

	mgmt_pending_remove(cmd);



unlock:

	hci_dev_unlock(hdev);

}



static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data,

			    u16 len)

{

	struct mgmt_cp_set_discoverable *cp = data;

	struct pending_cmd *cmd;

	struct hci_request req;

	u16 timeout;

	u8 scan, status;

	int err;
@@ -1021,6 +1062,8 @@ static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data, 
		goto failed;

	}



	hci_req_init(&req, hdev);



	scan = SCAN_PAGE;



	if (cp->val)
@@ -1028,7 +1071,9 @@ static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data, 
	else

		cancel_delayed_work(&hdev->discov_off);



	err = hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);

	hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);



	err = hci_req_run(&req, set_discoverable_complete);

	if (err < 0)

		mgmt_pending_remove(cmd);
@@ -4074,10 +4119,16 @@ void mgmt_set_powered_failed(struct hci_dev *hdev, int err) 


int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable)

{

	struct cmd_lookup match = { NULL, hdev };

	bool changed = false;

	int err = 0;



	/* Nothing needed here if there's a pending command since that

	 * commands request completion callback takes care of everything

	 * necessary.

	 */

	if (mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev))

		return 0;



	if (discoverable) {

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

			changed = true;
@@ -4086,14 +4137,8 @@ int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable) 
			changed = true;

	}



	mgmt_pending_foreach(MGMT_OP_SET_DISCOVERABLE, hdev, settings_rsp,

			     &match);



	if (changed)

		err = new_settings(hdev, match.sk);



	if (match.sk)

		sock_put(match.sk);

		err = new_settings(hdev, NULL);



	return err;

}