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Bluetooth: Handle LE Remote Connection Parameters Request Event

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Adds Remote Connection Parameter Request Event handler and command response
handlers to support LL Connection Parameter Update procedure (BT 4.1).

< HCI Command: LE Connection Update (0x08|0x0013) plen 14                                                                                                           [hci1] 86319.053586
        Handle: 42
        Min connection interval: 38.75 msec (0x001f)
        Max connection interval: 58.75 msec (0x002f)
        Connection latency: 0x0000
        Supervision timeout: 32000 msec (0x0c80)
        Min connection length: 0.625 msec (0x0001)
        Max connection length: 0.625 msec (0x0001)
> HCI Event: Command Status (0x0f) plen 4                                                                                                                           [hci1] 86319.053597
      LE Connection Update (0x08|0x0013) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 11                                                                                                                           [hci0] 86319.053600
      LE Remote Connection Parameter Request (0x06)
        Handle: 42
        Min connection interval: 38.75 msec (0x001f)
        Max connection interval: 58.75 msec (0x002f)
        Connection latency: 0x0000
        Supervision timeout: 32000 msec (0x0c80)

	...

< HCI Command: LE Remote Connection Parameter Request Reply (0x08|0x0020) plen 14                                                                                   [hci0] 86319.055663
        Handle: 42
        Min connection interval: 38.75 msec (0x001f)
        Max connection interval: 58.75 msec (0x002f)
        Connection latency: 0x0000
        Supervision timeout: 32000 msec (0x0c80)
        Min connection length: 0.000 msec (0x0000)
        Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Complete (0x0e) plen 6                                                                                                                         [hci0] 86319.055687
      LE Remote Connection Parameter Request Reply (0x08|0x0020) ncmd 1
        Status: Success (0x00)
        Handle: 42
> HCI Event: LE Meta Event (0x3e) plen 10                                                                                                                           [hci1] 86319.055694
      LE Connection Update Complete (0x03)
        Status: Success (0x00)
        Handle: 42
        Connection interval: 38.75 msec (0x001f)
        Connection latency: 0.00 msec (0x0000)
        Supervision timeout: 32000 msec (0x0c80)
> HCI Event: LE Meta Event (0x3e) plen 10                                                                                                                           [hci0] 86319.055692
      LE Connection Update Complete (0x03)
        Status: Success (0x00)
        Handle: 42
        Connection interval: 38.75 msec (0x001f)
        Connection latency: 0.00 msec (0x0000)
        Supervision timeout: 32000 msec (0x0c80)

Change-Id: Ief5d7bd404ce476e48a4d66983a03928d9db11d0
Signed-off-by: Arkadiusz Lichwa <arkadiusz.lichwa@tieto.com>
Signed-off-by: Mariusz Skamra <mariusz.skamra@tieto.com>
This commit is contained in:
Arkadiusz Lichwa 2015-08-10 22:23:05 +02:00 • committed by Anas Nashif
commit 992e18df97
1 changed files with 73 additions and 0 deletions
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73
net/bluetooth/hci_core.c
View file

@ -862,6 +862,76 @@ static void le_remote_feat_complete(struct bt_buf *buf)
bt_conn_put(conn);
}
static int le_conn_param_neg_reply(uint16_t handle, uint8_t reason)
{
struct bt_hci_cp_le_conn_param_req_neg_reply *cp;
struct bt_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = bt_buf_add(buf, sizeof(*cp));
cp->handle = sys_cpu_to_le16(handle);
cp->reason = sys_cpu_to_le16(reason);
return bt_hci_cmd_send(BT_HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, buf);
}
static int le_conn_param_req_reply(uint16_t handle, uint16_t min, uint16_t max,
uint16_t latency, uint16_t timeout)
{
struct bt_hci_cp_le_conn_param_req_reply *cp;
struct bt_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = bt_buf_add(buf, sizeof(*cp));
memset(cp, 0x0, sizeof(*cp));
cp->handle = sys_cpu_to_le16(handle);
cp->interval_min = sys_cpu_to_le16(min);
cp->interval_max = sys_cpu_to_le16(max);
cp->latency = sys_cpu_to_le16(latency);
cp->timeout = sys_cpu_to_le16(timeout);
return bt_hci_cmd_send(BT_HCI_OP_LE_CONN_PARAM_REQ_REPLY, buf);
}
static int le_conn_param_req(struct bt_buf *buf)
{
struct bt_hci_evt_le_conn_param_req *evt = (void *)buf->data;
struct bt_conn *conn;
uint16_t handle, min, max, latency, timeout;
handle = sys_le16_to_cpu(evt->handle);
min = sys_le16_to_cpu(evt->interval_min);
max = sys_le16_to_cpu(evt->interval_max);
latency = sys_le16_to_cpu(evt->latency);
timeout = sys_le16_to_cpu(evt->timeout);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to lookup conn for handle %u\n", handle);
return le_conn_param_neg_reply(handle,
BT_HCI_ERR_UNKNOWN_CONN_ID);
}
bt_conn_put(conn);
if (!bt_le_conn_params_valid(min, max, latency, timeout)) {
return le_conn_param_neg_reply(handle,
BT_HCI_ERR_INVALID_LL_PARAMS);
}
return le_conn_param_req_reply(handle, min, max, latency, timeout);
}
static void check_pending_conn(const bt_addr_le_t *addr, uint8_t evtype,
struct bt_keys *keys)
{
@ -1015,6 +1085,9 @@ static void hci_le_meta_event(struct bt_buf *buf)
case BT_HCI_EV_LE_REMOTE_FEAT_COMPLETE:
le_remote_feat_complete(buf);
break;
case BT_HCI_EVT_LE_CONN_PARAM_REQ:
le_conn_param_req(buf);
break;
default:
BT_DBG("Unhandled LE event %x\n", evt->subevent);
break;