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Commit 912098a6 authored by Arman Uguray's avatar Arman Uguray Committed by Marcel Holtmann
Browse files

Bluetooth: Add support for adv instance timeout 



This patch implements support for the timeout parameter of the
Add Advertising command.

Signed-off-by: default avatarArman Uguray <armansito@chromium.org>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 4117ed70

include/net/bluetooth/hci_core.h

+2 −0
Original line number Diff line number Diff line
@@ -156,8 +156,10 @@ struct oob_data { 
};



struct adv_info {

	struct delayed_work timeout_exp;

	__u8	instance;

	__u32	flags;

	__u16	timeout;

	__u16	adv_data_len;

	__u8	adv_data[HCI_MAX_AD_LENGTH];

	__u16	scan_rsp_len;

net/bluetooth/mgmt.c

+81 −20
Original line number Diff line number Diff line
@@ -1336,6 +1336,49 @@ static bool hci_stop_discovery(struct hci_request *req) 
	return false;

}



static void advertising_added(struct sock *sk, struct hci_dev *hdev,

			      u8 instance)

{

	struct mgmt_ev_advertising_added ev;



	ev.instance = instance;



	mgmt_event(MGMT_EV_ADVERTISING_ADDED, hdev, &ev, sizeof(ev), sk);

}



static void advertising_removed(struct sock *sk, struct hci_dev *hdev,

				u8 instance)

{

	struct mgmt_ev_advertising_removed ev;



	ev.instance = instance;



	mgmt_event(MGMT_EV_ADVERTISING_REMOVED, hdev, &ev, sizeof(ev), sk);

}



static void clear_adv_instance(struct hci_dev *hdev)

{

	struct hci_request req;



	if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE))

		return;



	if (hdev->adv_instance.timeout)

		cancel_delayed_work(&hdev->adv_instance.timeout_exp);



	memset(&hdev->adv_instance, 0, sizeof(hdev->adv_instance));

	advertising_removed(NULL, hdev, 1);

	hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE);



	if (!hdev_is_powered(hdev) ||

	    hci_dev_test_flag(hdev, HCI_ADVERTISING))

		return;



	hci_req_init(&req, hdev);

	disable_advertising(&req);

	hci_req_run(&req, NULL);

}



static int clean_up_hci_state(struct hci_dev *hdev)

{

	struct hci_request req;
@@ -1351,6 +1394,9 @@ static int clean_up_hci_state(struct hci_dev *hdev) 
		hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);

	}



	if (hdev->adv_instance.timeout)

		clear_adv_instance(hdev);



	if (hci_dev_test_flag(hdev, HCI_LE_ADV))

		disable_advertising(&req);
@@ -6468,26 +6514,6 @@ static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data, 
	return true;

}



static void advertising_added(struct sock *sk, struct hci_dev *hdev,

			      u8 instance)

{

	struct mgmt_ev_advertising_added ev;



	ev.instance = instance;



	mgmt_event(MGMT_EV_ADVERTISING_ADDED, hdev, &ev, sizeof(ev), sk);

}



static void advertising_removed(struct sock *sk, struct hci_dev *hdev,

				u8 instance)

{

	struct mgmt_ev_advertising_removed ev;



	ev.instance = instance;



	mgmt_event(MGMT_EV_ADVERTISING_REMOVED, hdev, &ev, sizeof(ev), sk);

}



static void add_advertising_complete(struct hci_dev *hdev, u8 status,

				     u16 opcode)

{
@@ -6524,6 +6550,18 @@ static void add_advertising_complete(struct hci_dev *hdev, u8 status, 
	hci_dev_unlock(hdev);

}



static void adv_timeout_expired(struct work_struct *work)

{

	struct hci_dev *hdev = container_of(work, struct hci_dev,

					    adv_instance.timeout_exp.work);



	hdev->adv_instance.timeout = 0;



	hci_dev_lock(hdev);

	clear_adv_instance(hdev);

	hci_dev_unlock(hdev);

}



static int add_advertising(struct sock *sk, struct hci_dev *hdev,

			   void *data, u16 data_len)

{
@@ -6531,6 +6569,7 @@ static int add_advertising(struct sock *sk, struct hci_dev *hdev, 
	struct mgmt_rp_add_advertising rp;

	u32 flags;

	u8 status;

	u16 timeout;

	int err;

	struct mgmt_pending_cmd *cmd;

	struct hci_request req;
@@ -6543,6 +6582,7 @@ static int add_advertising(struct sock *sk, struct hci_dev *hdev, 
				       status);



	flags = __le32_to_cpu(cp->flags);

	timeout = __le16_to_cpu(cp->timeout);



	/* The current implementation only supports adding one instance and

	 * doesn't support flags.
@@ -6553,6 +6593,12 @@ static int add_advertising(struct sock *sk, struct hci_dev *hdev, 


	hci_dev_lock(hdev);



	if (timeout && !hdev_is_powered(hdev)) {

		err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,

				      MGMT_STATUS_REJECTED);

		goto unlock;

	}



	if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) ||

	    pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) ||

	    pending_find(MGMT_OP_SET_LE, hdev)) {
@@ -6569,6 +6615,8 @@ static int add_advertising(struct sock *sk, struct hci_dev *hdev, 
		goto unlock;

	}



	INIT_DELAYED_WORK(&hdev->adv_instance.timeout_exp, adv_timeout_expired);



	hdev->adv_instance.flags = flags;

	hdev->adv_instance.adv_data_len = cp->adv_data_len;

	hdev->adv_instance.scan_rsp_len = cp->scan_rsp_len;
@@ -6580,6 +6628,16 @@ static int add_advertising(struct sock *sk, struct hci_dev *hdev, 
		memcpy(hdev->adv_instance.scan_rsp_data,

		       cp->data + cp->adv_data_len, cp->scan_rsp_len);



	if (hdev->adv_instance.timeout)

		cancel_delayed_work(&hdev->adv_instance.timeout_exp);



	hdev->adv_instance.timeout = timeout;



	if (timeout)

		queue_delayed_work(hdev->workqueue,

				   &hdev->adv_instance.timeout_exp,

				   msecs_to_jiffies(timeout * 1000));



	if (!hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING_INSTANCE))

		advertising_added(sk, hdev, 1);
@@ -6682,6 +6740,9 @@ static int remove_advertising(struct sock *sk, struct hci_dev *hdev, 
		goto unlock;

	}



	if (hdev->adv_instance.timeout)

		cancel_delayed_work(&hdev->adv_instance.timeout_exp);



	memset(&hdev->adv_instance, 0, sizeof(hdev->adv_instance));



	advertising_removed(sk, hdev, 1);