Commit a0fb3726 authored by Jaganath Kanakkassery's avatar Jaganath Kanakkassery Committed by Marcel Holtmann
Browse files

Bluetooth: Use Set ext adv/scan rsp data if controller supports 



This patch implements Set Ext Adv data and Set Ext Scan rsp data
if controller support extended advertising.

Currently the operation is set as Complete data and fragment
preference is set as no fragment

< HCI Command: LE Set Extended Advertising Data (0x08|0x0037) plen 35
        Handle: 0x00
        Operation: Complete extended advertising data (0x03)
        Fragment preference: Minimize fragmentation (0x01)
        Data length: 0x15
        16-bit Service UUIDs (complete): 2 entries
          Heart Rate (0x180d)
          Battery Service (0x180f)
        Name (complete): Test LE
        Company: Google (224)
          Data: 0102
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Extended Advertising Data (0x08|0x0037) ncmd 1
        Status: Success (0x00)

Signed-off-by: default avatarJaganath Kanakkassery <jaganathx.kanakkassery@intel.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent de181e88

include/net/bluetooth/hci.h

+22 −0
Original line number Diff line number Diff line
@@ -1625,6 +1625,28 @@ struct hci_cp_ext_adv_set { 
	__u8  max_events;

} __packed;



#define HCI_OP_LE_SET_EXT_ADV_DATA		0x2037

struct hci_cp_le_set_ext_adv_data {

	__u8  handle;

	__u8  operation;

	__u8  frag_pref;

	__u8  length;

	__u8  data[HCI_MAX_AD_LENGTH];

} __packed;



#define HCI_OP_LE_SET_EXT_SCAN_RSP_DATA		0x2038

struct hci_cp_le_set_ext_scan_rsp_data {

	__u8  handle;

	__u8  operation;

	__u8  frag_pref;

	__u8  length;

	__u8  data[HCI_MAX_AD_LENGTH];

} __packed;



#define LE_SET_ADV_DATA_OP_COMPLETE	0x03



#define LE_SET_ADV_DATA_NO_FRAG		0x01



/* ---- HCI Events ---- */

#define HCI_EV_INQUIRY_COMPLETE		0x01

net/bluetooth/hci_event.c

+2 −0
Original line number Diff line number Diff line
@@ -1547,6 +1547,8 @@ static void hci_cc_set_ext_adv_param(struct hci_dev *hdev, struct sk_buff *skb) 
		if (adv_instance)

			adv_instance->tx_power = rp->tx_power;

	}

	/* Update adv data as tx power is known now */

	hci_req_update_adv_data(hdev, hdev->cur_adv_instance);

	hci_dev_unlock(hdev);

}

net/bluetooth/hci_request.c

+95 −31
Original line number Diff line number Diff line
@@ -1174,16 +1174,44 @@ static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance, 
void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance)

{

	struct hci_dev *hdev = req->hdev;

	struct hci_cp_le_set_scan_rsp_data cp;

	u8 len;



	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))

		return;



	if (ext_adv_capable(hdev)) {

		struct hci_cp_le_set_ext_scan_rsp_data cp;



		memset(&cp, 0, sizeof(cp));



		if (instance)

		len = create_instance_scan_rsp_data(hdev, instance, cp.data);

			len = create_instance_scan_rsp_data(hdev, instance,

							    cp.data);

		else

			len = create_default_scan_rsp_data(hdev, cp.data);



		if (hdev->scan_rsp_data_len == len &&

		    !memcmp(cp.data, hdev->scan_rsp_data, len))

			return;



		memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));

		hdev->scan_rsp_data_len = len;



		cp.handle = 0;

		cp.length = len;

		cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;

		cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;



		hci_req_add(req, HCI_OP_LE_SET_EXT_SCAN_RSP_DATA, sizeof(cp),

			    &cp);

	} else {

		struct hci_cp_le_set_scan_rsp_data cp;



		memset(&cp, 0, sizeof(cp));



		if (instance)

			len = create_instance_scan_rsp_data(hdev, instance,

							    cp.data);

		else

			len = create_default_scan_rsp_data(hdev, cp.data);
@@ -1198,6 +1226,7 @@ void __hci_req_update_scan_rsp_data(struct hci_request *req, u8 instance) 


		hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);

	}

}



static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)

{
@@ -1282,12 +1311,35 @@ static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr) 
void __hci_req_update_adv_data(struct hci_request *req, u8 instance)

{

	struct hci_dev *hdev = req->hdev;

	struct hci_cp_le_set_adv_data cp;

	u8 len;



	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))

		return;



	if (ext_adv_capable(hdev)) {

		struct hci_cp_le_set_ext_adv_data cp;



		memset(&cp, 0, sizeof(cp));



		len = create_instance_adv_data(hdev, instance, cp.data);



		/* There's nothing to do if the data hasn't changed */

		if (hdev->adv_data_len == len &&

		    memcmp(cp.data, hdev->adv_data, len) == 0)

			return;



		memcpy(hdev->adv_data, cp.data, sizeof(cp.data));

		hdev->adv_data_len = len;



		cp.length = len;

		cp.handle = 0;

		cp.operation = LE_SET_ADV_DATA_OP_COMPLETE;

		cp.frag_pref = LE_SET_ADV_DATA_NO_FRAG;



		hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_DATA, sizeof(cp), &cp);

	} else {

		struct hci_cp_le_set_adv_data cp;



		memset(&cp, 0, sizeof(cp));



		len = create_instance_adv_data(hdev, instance, cp.data);
@@ -1304,6 +1356,7 @@ void __hci_req_update_adv_data(struct hci_request *req, u8 instance) 


		hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);

	}

}



int hci_req_update_adv_data(struct hci_dev *hdev, u8 instance)

{
@@ -1377,8 +1430,7 @@ unlock: 
	hci_dev_unlock(hdev);

}



static int __hci_req_setup_ext_adv_instance(struct hci_request *req,

					    u8 instance)

int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)

{

	struct hci_cp_le_set_ext_adv_params cp;

	struct hci_dev *hdev = req->hdev;
@@ -1453,6 +1505,7 @@ int __hci_req_start_ext_adv(struct hci_request *req, u8 instance) 
	if (err < 0)

		return err;



	__hci_req_update_scan_rsp_data(req, instance);

	__hci_req_enable_ext_advertising(req);



	return 0;
@@ -2500,14 +2553,25 @@ static int powered_update_hci(struct hci_request *req, unsigned long opt) 
		 */

		if (hci_dev_test_flag(hdev, HCI_ADVERTISING) ||

		    list_empty(&hdev->adv_instances)) {

			int err;



			if (ext_adv_capable(hdev)) {

				err = __hci_req_setup_ext_adv_instance(req,

								       0x00);

				if (!err)

					__hci_req_update_scan_rsp_data(req,

								       0x00);

			} else {

				err = 0;

				__hci_req_update_adv_data(req, 0x00);

				__hci_req_update_scan_rsp_data(req, 0x00);

			}



			if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) {

				if (ext_adv_capable(hdev))

					__hci_req_start_ext_adv(req, 0x00);

				else

				if (!ext_adv_capable(hdev))

					__hci_req_enable_advertising(req);

				else if (!err)

					__hci_req_enable_ext_advertising(req);

			}

		} else if (!list_empty(&hdev->adv_instances)) {

			struct adv_info *adv_instance;

net/bluetooth/hci_request.h

+1 −0
Original line number Diff line number Diff line
@@ -80,6 +80,7 @@ void hci_req_clear_adv_instance(struct hci_dev *hdev, struct sock *sk, 
				struct hci_request *req, u8 instance,

				bool force);



int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance);

int __hci_req_start_ext_adv(struct hci_request *req, u8 instance);

void __hci_req_enable_ext_advertising(struct hci_request *req);

net/bluetooth/mgmt.c

+10 −3
Original line number Diff line number Diff line
@@ -1847,10 +1847,17 @@ static void le_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) 
	 */

	if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) {

		struct hci_request req;



		hci_req_init(&req, hdev);

		if (ext_adv_capable(hdev)) {

			int err;



			err = __hci_req_setup_ext_adv_instance(&req, 0x00);

			if (!err)

				__hci_req_update_scan_rsp_data(&req, 0x00);

		} else {

			__hci_req_update_adv_data(&req, 0x00);

			__hci_req_update_scan_rsp_data(&req, 0x00);

		}

		hci_req_run(&req, NULL);

		hci_update_background_scan(hdev);

	}

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