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Bluetooth: Add LE Local Features reading support 

To be able to make the appropriate decisions for some LE procedures we
need to know the LE features that the local controller supports.
Therefore, it's important to have the LE Read Local Supported Features
HCI comand as part of the HCI init sequence.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Johan Hedberg 2013-01-22 14:01:59 +02:00 committed by Gustavo Padovan
parent 5d0846d416
commit 60e7732198
3 changed files with 27 additions and 0 deletions
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6
include/net/bluetooth/hci.h
View File

@ -943,6 +943,12 @@ struct hci_rp_le_read_buffer_size {
__u8 le_max_pkt;
} __packed;
#define HCI_OP_LE_READ_LOCAL_FEATURES 0x2003
struct hci_rp_le_read_local_features {
__u8 status;
__u8 features[8];
} __packed;
#define HCI_OP_LE_READ_ADV_TX_POWER 0x2007
struct hci_rp_le_read_adv_tx_power {
__u8 status;

1
include/net/bluetooth/hci_core.h
View File

@ -152,6 +152,7 @@ struct hci_dev {
__u8 minor_class;
__u8 features[8];
__u8 host_features[8];
__u8 le_features[8];
__u8 commands[64];
__u8 hci_ver;
__u16 hci_rev;

20
net/bluetooth/hci_event.c
View File

@ -609,6 +609,9 @@ static void le_setup(struct hci_dev *hdev)
/* Read LE Buffer Size */
hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL);
/* Read LE Local Supported Features */
hci_send_cmd(hdev, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL);
/* Read LE Advertising Channel TX Power */
hci_send_cmd(hdev, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL);
}
@ -1090,6 +1093,19 @@ static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
hci_req_complete(hdev, HCI_OP_LE_READ_BUFFER_SIZE, rp->status);
}
static void hci_cc_le_read_local_features(struct hci_dev *hdev,
struct sk_buff *skb)
{
struct hci_rp_le_read_local_features *rp = (void *) skb->data;
BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
if (!rp->status)
memcpy(hdev->le_features, rp->features, 8);
hci_req_complete(hdev, HCI_OP_LE_READ_LOCAL_FEATURES, rp->status);
}
static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
struct sk_buff *skb)
{
@ -2628,6 +2644,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_le_read_buffer_size(hdev, skb);
break;
case HCI_OP_LE_READ_LOCAL_FEATURES:
hci_cc_le_read_local_features(hdev, skb);
break;
case HCI_OP_LE_READ_ADV_TX_POWER:
hci_cc_le_read_adv_tx_power(hdev, skb);
break;