Here is the userspace change associated with this change: https://patchwork.kernel.org/project/bluetooth/list/?series=313771 On Mon, Jul 6, 2020 at 11:44 AM Alain Michaud <alainm@xxxxxxxxxxxx> wrote: > > 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@xxxxxxxxxxxx> > --- > > Changes in v3: > - Back to the original design of V1 and integrated Marcel's feedback. > > Changes in v2: > - Slight change of design based on offline feedback > > net/bluetooth/mgmt.c | 24 ++++++++++++++++++++++-- > 1 file changed, 22 insertions(+), 2 deletions(-) > > diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c > index 5e9b9728eeac..b34e6f3c07ec 100644 > --- a/net/bluetooth/mgmt.c > +++ b/net/bluetooth/mgmt.c > @@ -3753,12 +3753,19 @@ static const u8 debug_uuid[16] = { > }; > #endif > > +/* 671b10b5-42c0-4696-9227-eb28d1b049d6 */ > +static const u8 le_simult_central_peripheral[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 +3781,19 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, > } > #endif > > + flags = 0; > + memcpy(rp->features[idx].uuid, le_simult_central_peripheral, > + sizeof(le_simult_central_peripheral)); > + > + if (hdev && 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); > + > + rp->features[idx].flags = cpu_to_le32(flags); > + idx++; > + > rp->feature_count = cpu_to_le16(idx); > > /* After reading the experimental features information, enable > -- > 2.27.0.212.ge8ba1cc988-goog >
