Commit 60e77321 authored by Johan Hedberg's avatar Johan Hedberg Committed by Gustavo Padovan

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: default avatarJohan Hedberg <>
Acked-by: default avatarMarcel Holtmann <>
Signed-off-by: default avatarGustavo Padovan <>
parent 5d0846d4
......@@ -943,6 +943,12 @@ struct hci_rp_le_read_buffer_size {
__u8 le_max_pkt;
} __packed;
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;
......@@ -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;
......@@ -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);
hci_cc_le_read_local_features(hdev, skb);
hci_cc_le_read_adv_tx_power(hdev, skb);
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