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Bluetooth: Add tracking of local and piconet clock values

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This patch adds support for storing the local and piconet clock values
from the HCI_Read_Clock command response to the hci_dev and hci_conn
structs. This will be later used in another patch to implement support
for the Get Clock Info mgmt command.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-06-28 17:54:06 +03:00 committed by Marcel Holtmann
parent fca20018e7
commit 33f3572103
3 changed files with 55 additions and 0 deletions
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12
include/net/bluetooth/hci.h
View File

@ -1087,6 +1087,18 @@ struct hci_rp_read_rssi {
__s8 rssi; __s8 rssi;
} __packed; } __packed;
#define HCI_OP_READ_CLOCK 0x1407
struct hci_cp_read_clock {
__le16 handle;
__u8 which;
} __packed;
struct hci_rp_read_clock {
__u8 status;
__le16 handle;
__le32 clock;
__le16 accuracy;
} __packed;
#define HCI_OP_READ_LOCAL_AMP_INFO 0x1409 #define HCI_OP_READ_LOCAL_AMP_INFO 0x1409
struct hci_rp_read_local_amp_info { struct hci_rp_read_local_amp_info {
__u8 status; __u8 status;

4
include/net/bluetooth/hci_core.h
View File

@ -207,6 +207,7 @@ struct hci_dev {
__u16 conn_info_min_age; __u16 conn_info_min_age;
__u16 conn_info_max_age; __u16 conn_info_max_age;
__u8 ssp_debug_mode; __u8 ssp_debug_mode;
__u32 clock;
__u16 devid_source; __u16 devid_source;
__u16 devid_vendor; __u16 devid_vendor;
@ -388,6 +389,9 @@ struct hci_conn {
__s8 max_tx_power; __s8 max_tx_power;
unsigned long flags; unsigned long flags;
__u32 clock;
__u16 clock_accuracy;
unsigned long conn_info_timestamp; unsigned long conn_info_timestamp;
__u8 remote_cap; __u8 remote_cap;

39
net/bluetooth/hci_event.c
View File

@ -721,6 +721,41 @@ static void hci_cc_read_data_block_size(struct hci_dev *hdev,
hdev->block_cnt, hdev->block_len); hdev->block_cnt, hdev->block_len);
} }
static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_rp_read_clock *rp = (void *) skb->data;
struct hci_cp_read_clock *cp;
struct hci_conn *conn;
BT_DBG("%s", hdev->name);
if (skb->len < sizeof(*rp))
return;
if (rp->status)
return;
hci_dev_lock(hdev);
cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
if (!cp)
goto unlock;
if (cp->which == 0x00) {
hdev->clock = le32_to_cpu(rp->clock);
goto unlock;
}
conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
if (conn) {
conn->clock = le32_to_cpu(rp->clock);
conn->clock_accuracy = le16_to_cpu(rp->accuracy);
}
unlock:
hci_dev_unlock(hdev);
}
static void hci_cc_read_local_amp_info(struct hci_dev *hdev, static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
struct sk_buff *skb) struct sk_buff *skb)
{ {
@ -2597,6 +2632,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_cc_read_local_amp_info(hdev, skb); hci_cc_read_local_amp_info(hdev, skb);
break; break;
case HCI_OP_READ_CLOCK:
hci_cc_read_clock(hdev, skb);
break;
case HCI_OP_READ_LOCAL_AMP_ASSOC: case HCI_OP_READ_LOCAL_AMP_ASSOC:
hci_cc_read_local_amp_assoc(hdev, skb); hci_cc_read_local_amp_assoc(hdev, skb);
break; break;