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Bluetooth: Track LE connection parameter update event 

When the LE controller changes its connection parameters, it will send
a connection parameter update event. Make sure that the new set of
parameters are stored in hci_conn struct and thus will properly update
the previous values retrieved from the connection complete event.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2014-06-23 11:40:05 +02:00
parent e04fde60ef
commit 1855d92dce
2 changed files with 36 additions and 0 deletions
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9
include/net/bluetooth/hci.h
View File

@ -1666,6 +1666,15 @@ struct hci_ev_le_conn_complete {
__u8 clk_accurancy;
} __packed;
#define HCI_EV_LE_CONN_UPDATE_COMPLETE 0x03
struct hci_ev_le_conn_update_complete {
__u8 status;
__le16 handle;
__le16 interval;
__le16 latency;
__le16 supervision_timeout;
} __packed;
#define HCI_EV_LE_LTK_REQ 0x05
struct hci_ev_le_ltk_req {
__le16 handle;

27
net/bluetooth/hci_event.c
View File

@ -4070,6 +4070,29 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_dev_unlock(hdev);
}
static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
struct sk_buff *skb)
{
struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
struct hci_conn *conn;
BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
if (ev->status)
return;
hci_dev_lock(hdev);
conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
if (conn) {
conn->le_conn_interval = le16_to_cpu(ev->interval);
conn->le_conn_latency = le16_to_cpu(ev->latency);
conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
}
hci_dev_unlock(hdev);
}
/* This function requires the caller holds hdev->lock */
static void check_pending_le_conn(struct hci_dev *hdev, bdaddr_t *addr,
u8 addr_type)
@ -4269,6 +4292,10 @@ static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
hci_le_conn_complete_evt(hdev, skb);
break;
case HCI_EV_LE_CONN_UPDATE_COMPLETE:
hci_le_conn_update_complete_evt(hdev, skb);
break;
case HCI_EV_LE_ADVERTISING_REPORT:
hci_le_adv_report_evt(hdev, skb);
break;