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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: Jaganath Kanakkassery <jaganathx.kanakkassery@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Jaganath Kanakkassery 2018-07-19 17:09:42 +05:30 committed by Marcel Holtmann
parent de181e887a
commit a0fb3726ba
5 changed files with 130 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
include/net/bluetooth/hci.h
View File

@ -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

2
net/bluetooth/hci_event.c
View File

@ -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);
}

126
net/bluetooth/hci_request.c
View File

@ -1174,29 +1174,58 @@ 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;
memset(&cp, 0, sizeof(cp));
if (ext_adv_capable(hdev)) {
struct hci_cp_le_set_ext_scan_rsp_data cp;
if (instance)
len = create_instance_scan_rsp_data(hdev, instance, cp.data);
else
len = create_default_scan_rsp_data(hdev, cp.data);
memset(&cp, 0, sizeof(cp));
if (hdev->scan_rsp_data_len == len &&
!memcmp(cp.data, hdev->scan_rsp_data, len))
return;
if (instance)
len = create_instance_scan_rsp_data(hdev, instance,
cp.data);
else
len = create_default_scan_rsp_data(hdev, cp.data);
memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
hdev->scan_rsp_data_len = len;
if (hdev->scan_rsp_data_len == len &&
!memcmp(cp.data, hdev->scan_rsp_data, len))
return;
cp.length = len;
memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
hdev->scan_rsp_data_len = len;
hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
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);
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.length = len;
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)
@ -1282,27 +1311,51 @@ 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;
memset(&cp, 0, sizeof(cp));
if (ext_adv_capable(hdev)) {
struct hci_cp_le_set_ext_adv_data cp;
len = create_instance_adv_data(hdev, instance, cp.data);
memset(&cp, 0, sizeof(cp));
/* 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;
len = create_instance_adv_data(hdev, instance, cp.data);
memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
hdev->adv_data_len = len;
/* 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;
cp.length = len;
memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
hdev->adv_data_len = len;
hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
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);
/* 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;
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 @@ static void adv_timeout_expire(struct work_struct *work)
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)) {
__hci_req_update_adv_data(req, 0x00);
__hci_req_update_scan_rsp_data(req, 0x00);
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;

1
net/bluetooth/hci_request.h
View File

@ -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);

13
net/bluetooth/mgmt.c
View File

@ -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);
__hci_req_update_adv_data(&req, 0x00);
__hci_req_update_scan_rsp_data(&req, 0x00);
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);
}