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Bluetooth: le_simult_central_peripheral experimental feature

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This patch adds an le_simult_central_peripheral features which allows a
clients to determine if the controller is able to support peripheral and
central connections separately and at the same time.

Signed-off-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alain Michaud 2020-07-07 17:46:06 +02:00 committed by Marcel Holtmann
parent b83764f922
commit 15d8ce05eb
1 changed files with 23 additions and 2 deletions
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25
net/bluetooth/mgmt.c
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@ -3753,12 +3753,19 @@ static const u8 debug_uuid[16] = {
};
#endif
/* 671b10b5-42c0-4696-9227-eb28d1b049d6 */
static const u8 simult_central_periph_uuid[16] = {
0xd6, 0x49, 0xb0, 0xd1, 0x28, 0xeb, 0x27, 0x92,
0x96, 0x46, 0xc0, 0x42, 0xb5, 0x10, 0x1b, 0x67,
};
static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
void *data, u16 data_len)
{
char buf[42];
char buf[44];
struct mgmt_rp_read_exp_features_info *rp = (void *)buf;
u16 idx = 0;
u32 flags;
bt_dev_dbg(hdev, "sock %p", sk);
@ -3766,7 +3773,7 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
#ifdef CONFIG_BT_FEATURE_DEBUG
if (!hdev) {
u32 flags = bt_dbg_get() ? BIT(0) : 0;
flags = bt_dbg_get() ? BIT(0) : 0;
memcpy(rp->features[idx].uuid, debug_uuid, 16);
rp->features[idx].flags = cpu_to_le32(flags);
@ -3774,6 +3781,20 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
}
#endif
if (hdev) {
if (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) &&
(hdev->le_states[4] & 0x08) && /* Central */
(hdev->le_states[4] & 0x40) && /* Peripheral */
(hdev->le_states[3] & 0x10)) /* Simultaneous */
flags = BIT(0);
else
flags = 0;
memcpy(rp->features[idx].uuid, simult_central_periph_uuid, 16);
rp->features[idx].flags = cpu_to_le32(flags);
idx++;
}
rp->feature_count = cpu_to_le16(idx);
/* After reading the experimental features information, enable