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Bluetooth: Report invalid RSSI for service discovery and background scan

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When using Start Service Discovery and when background scanning is used
to report devices, the RSSI is reported or the value 127 is provided in
case RSSI in unavailable.

For Start Discovery the value 0 is reported to keep backwards
compatibility with the existing users.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2014-12-05 13:03:35 +01:00 • committed by Johan Hedberg
commit da25cf6a98
2 changed files with 13 additions and 2 deletions
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3
include/net/bluetooth/hci_core.h
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@ -75,6 +75,7 @@ struct discovery_state {
u32 last_adv_flags;
u8 last_adv_data[HCI_MAX_AD_LENGTH];
u8 last_adv_data_len;
bool report_invalid_rssi;
s8 rssi;
u16 uuid_count;
u8 (*uuids)[16];
@ -506,11 +507,13 @@ static inline void discovery_init(struct hci_dev *hdev)
INIT_LIST_HEAD(&hdev->discovery.all);
INIT_LIST_HEAD(&hdev->discovery.unknown);
INIT_LIST_HEAD(&hdev->discovery.resolve);
hdev->discovery.report_invalid_rssi = true;
hdev->discovery.rssi = HCI_RSSI_INVALID;
}
static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
{
hdev->discovery.report_invalid_rssi = true;
hdev->discovery.rssi = HCI_RSSI_INVALID;
hdev->discovery.uuid_count = 0;
kfree(hdev->discovery.uuids);