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Bluetooth: Make LE scan interval and window a controller option 

The scan interval and window for LE passive scanning and connection
establishment should be configurable on a per controller basis. So
introduce a setting that later on will allow modifying it.

This setting does not affect LE active scanning during device
discovery phase. As long as that phase uses interleaved discovery,
it will continuously scan.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2013-10-11 08:23:19 -07:00 committed by Johan Hedberg
parent 3932eb335a
commit bef64738e3
3 changed files with 7 additions and 2 deletions
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2
include/net/bluetooth/hci_core.h
View File

@ -164,6 +164,8 @@ struct hci_dev {
__u16 page_scan_interval;
__u16 page_scan_window;
__u8 page_scan_type;
__u16 le_scan_interval;
__u16 le_scan_window;
__u16 devid_source;
__u16 devid_vendor;

4
net/bluetooth/hci_conn.c
View File

@ -562,8 +562,8 @@ static int hci_create_le_conn(struct hci_conn *conn)
hci_req_init(&req, hdev);
memset(&cp, 0, sizeof(cp));
cp.scan_interval = __constant_cpu_to_le16(0x0060);
cp.scan_window = __constant_cpu_to_le16(0x0030);
cp.scan_interval = cpu_to_le16(hdev->le_scan_interval);
cp.scan_window = cpu_to_le16(hdev->le_scan_window);
bacpy(&cp.peer_addr, &conn->dst);
cp.peer_addr_type = conn->dst_type;
if (bacmp(&hdev->bdaddr, BDADDR_ANY))

3
net/bluetooth/hci_core.c
View File

@ -2273,6 +2273,9 @@ struct hci_dev *hci_alloc_dev(void)
hdev->sniff_max_interval = 800;
hdev->sniff_min_interval = 80;
hdev->le_scan_interval = 0x0060;
hdev->le_scan_window = 0x0030;
mutex_init(&hdev->lock);
mutex_init(&hdev->req_lock);