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Bluetooth: Add Load Connection Parameters command 

This patch implements the new Load Connection Parameters mgmt command
that's intended to load the desired connection parameters for LE
devices.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-07-02 17:37:29 +03:00 committed by Marcel Holtmann
parent c71593dd34
commit a26f3dcff2
2 changed files with 94 additions and 0 deletions
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15
include/net/bluetooth/mgmt.h
View File

@ -449,6 +449,21 @@ struct mgmt_cp_remove_device {
} __packed;
#define MGMT_REMOVE_DEVICE_SIZE MGMT_ADDR_INFO_SIZE
struct mgmt_conn_param {
struct mgmt_addr_info addr;
__le16 min_interval;
__le16 max_interval;
__le16 latency;
__le16 timeout;
} __packed;
#define MGMT_OP_LOAD_CONN_PARAM 0x0035
struct mgmt_cp_load_conn_param {
__le16 param_count;
struct mgmt_conn_param params[0];
} __packed;
#define MGMT_LOAD_CONN_PARAM_SIZE 2
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;

79
net/bluetooth/mgmt.c
View File

@ -88,6 +88,7 @@ static const u16 mgmt_commands[] = {
MGMT_OP_GET_CLOCK_INFO,
MGMT_OP_ADD_DEVICE,
MGMT_OP_REMOVE_DEVICE,
MGMT_OP_LOAD_CONN_PARAM,
};
static const u16 mgmt_events[] = {
@ -5134,6 +5135,83 @@ static int remove_device(struct sock *sk, struct hci_dev *hdev,
return err;
}
static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data,
u16 len)
{
struct mgmt_cp_load_conn_param *cp = data;
u16 param_count, expected_len;
int i;
if (!lmp_le_capable(hdev))
return cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
MGMT_STATUS_NOT_SUPPORTED);
param_count = __le16_to_cpu(cp->param_count);
expected_len = sizeof(*cp) + param_count *
sizeof(struct mgmt_conn_param);
if (expected_len != len) {
BT_ERR("load_conn_param: expected %u bytes, got %u bytes",
expected_len, len);
return cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM,
MGMT_STATUS_INVALID_PARAMS);
}
BT_DBG("%s param_count %u", hdev->name, param_count);
hci_dev_lock(hdev);
hci_conn_params_clear_disabled(hdev);
for (i = 0; i < param_count; i++) {
struct mgmt_conn_param *param = &cp->params[i];
struct hci_conn_params *hci_param;
u16 min, max, latency, timeout;
u8 addr_type;
BT_DBG("Adding %pMR (type %u)", &param->addr.bdaddr,
param->addr.type);
if (param->addr.type == BDADDR_LE_PUBLIC) {
addr_type = ADDR_LE_DEV_PUBLIC;
} else if (param->addr.type == BDADDR_LE_RANDOM) {
addr_type = ADDR_LE_DEV_RANDOM;
} else {
BT_ERR("Ignoring invalid connection parameters");
continue;
}
min = le16_to_cpu(param->min_interval);
max = le16_to_cpu(param->max_interval);
latency = le16_to_cpu(param->latency);
timeout = le16_to_cpu(param->timeout);
BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x",
min, max, latency, timeout);
if (hci_check_conn_params(min, max, latency, timeout) < 0) {
BT_ERR("Ignoring invalid connection parameters");
continue;
}
hci_param = hci_conn_params_add(hdev, &param->addr.bdaddr,
addr_type);
if (!hci_param) {
BT_ERR("Failed to add connection parameters");
continue;
}
hci_param->conn_min_interval = min;
hci_param->conn_max_interval = max;
hci_param->conn_latency = latency;
hci_param->supervision_timeout = timeout;
}
hci_dev_unlock(hdev);
return cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0, NULL, 0);
}
static const struct mgmt_handler {
int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len);
@ -5193,6 +5271,7 @@ static const struct mgmt_handler {
{ get_clock_info, false, MGMT_GET_CLOCK_INFO_SIZE },
{ add_device, false, MGMT_ADD_DEVICE_SIZE },
{ remove_device, false, MGMT_REMOVE_DEVICE_SIZE },
{ load_conn_param, true, MGMT_LOAD_CONN_PARAM_SIZE },
};
int mgmt_control(struct sock *sk, struct msghdr *msg, size_t msglen)