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Bluetooth: Provide function to create and set connection parameters

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In some cases it is useful to not overwrite connection parametes and
instead just create default ones if they don't exist. This function
does exactly that. hci_conn_params_add will allow to create new
default connection parameters. hci_conn_params_set will set the
values and also create new parameters if they don't exist.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2014-06-30 12:34:39 +02:00
parent f1649577a6
commit bf5b3c8be0
3 changed files with 41 additions and 3 deletions
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3
include/net/bluetooth/hci_core.h
View file

@ -852,7 +852,8 @@ int hci_white_list_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
bdaddr_t *addr, u8 addr_type);
int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
int hci_conn_params_set(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
u8 auto_connect, u16 conn_min_interval,
u16 conn_max_interval);
void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);

36
net/bluetooth/hci_core.c
View file

@ -3472,7 +3472,41 @@ void hci_pend_le_conns_clear(struct hci_dev *hdev)
}
/* This function requires the caller holds hdev->lock */
int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
int hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type)
{
struct hci_conn_params *params;
if (!is_identity_address(addr, addr_type))
return -EINVAL;
params = hci_conn_params_lookup(hdev, addr, addr_type);
if (params)
return 0;
params = kzalloc(sizeof(*params), GFP_KERNEL);
if (!params) {
BT_ERR("Out of memory");
return -ENOMEM;
}
bacpy(&params->addr, addr);
params->addr_type = addr_type;
list_add(&params->list, &hdev->le_conn_params);
params->conn_min_interval = hdev->le_conn_min_interval;
params->conn_max_interval = hdev->le_conn_max_interval;
params->conn_latency = hdev->le_conn_latency;
params->supervision_timeout = hdev->le_supv_timeout;
params->auto_connect = HCI_AUTO_CONN_DISABLED;
BT_DBG("addr %pMR (type %u)", addr, addr_type);
return 0;
}
/* This function requires the caller holds hdev->lock */
int hci_conn_params_set(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type,
u8 auto_connect, u16 conn_min_interval,
u16 conn_max_interval)
{

5
net/bluetooth/mgmt.c
View file

@ -5014,7 +5014,10 @@ static int add_device(struct sock *sk, struct hci_dev *hdev,
else
auto_conn = HCI_AUTO_CONN_DISABLED;
if (hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type, auto_conn,
/* If the connection parameters don't exist for this device,
* they will be created and configured with defaults.
*/
if (hci_conn_params_set(hdev, &cp->addr.bdaddr, addr_type, auto_conn,
hdev->le_conn_min_interval,
hdev->le_conn_max_interval) < 0) {
err = cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE,