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Bluetooth: Add MGMT capability flags for tx power and ext advertising 

For new advertising features, it will be important for userspace to
know the capabilities of the controller and kernel. If the controller
and kernel support extended advertising, we include flags indicating
hardware offloading support and support for setting tx power of adv
instances.

In the future, vendor-specific commands may allow the setting of tx
power in advertising instances, but for now this feature is only
marked available if extended advertising is supported.

This change is manually verified in userspace by ensuring the
advertising manager's supported_flags field is updated with new flags on
hatch chromebook (ext advertising supported).

Signed-off-by: Daniel Winkler <danielwinkler@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Daniel Winkler 2020-08-25 16:31:51 -07:00 committed by Marcel Holtmann
parent 87597482c6
commit d5ea32da87
2 changed files with 4 additions and 0 deletions
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2
include/net/bluetooth/mgmt.h
View File

@ -572,6 +572,8 @@ struct mgmt_rp_add_advertising {
#define MGMT_ADV_FLAG_SEC_1M BIT(7)
#define MGMT_ADV_FLAG_SEC_2M BIT(8)
#define MGMT_ADV_FLAG_SEC_CODED BIT(9)
#define MGMT_ADV_FLAG_CAN_SET_TX_POWER BIT(10)
#define MGMT_ADV_FLAG_HW_OFFLOAD BIT(11)
#define MGMT_ADV_FLAG_SEC_MASK (MGMT_ADV_FLAG_SEC_1M | MGMT_ADV_FLAG_SEC_2M | \
MGMT_ADV_FLAG_SEC_CODED)

2
net/bluetooth/mgmt.c
View File

@ -7206,6 +7206,8 @@ static u32 get_supported_adv_flags(struct hci_dev *hdev)
if (ext_adv_capable(hdev)) {
flags |= MGMT_ADV_FLAG_SEC_1M;
flags |= MGMT_ADV_FLAG_HW_OFFLOAD;
flags |= MGMT_ADV_FLAG_CAN_SET_TX_POWER;
if (hdev->le_features[1] & HCI_LE_PHY_2M)
flags |= MGMT_ADV_FLAG_SEC_2M;