/*******************************************************************************
**
** Function L2CA_UcdRegister
**
** Description Register PSM on UCD.
**
** Parameters: tL2CAP_UCD_CB_INFO
**
** Return value: TRUE if successs
**
*******************************************************************************/
BOOLEAN L2CA_UcdRegister ( UINT16 psm, tL2CAP_UCD_CB_INFO *p_cb_info )
{
tL2C_RCB *p_rcb;
L2CAP_TRACE_API ("L2CA_UcdRegister() PSM: 0x%04x", psm);
if ((!p_cb_info->pL2CA_UCD_Discover_Cb)
|| (!p_cb_info->pL2CA_UCD_Data_Cb)) {
L2CAP_TRACE_ERROR ("L2CAP - no callback registering PSM(0x%04x) on UCD", psm);
return (FALSE);
}
if ((p_rcb = l2cu_find_rcb_by_psm (psm)) == NULL) {
L2CAP_TRACE_ERROR ("L2CAP - no RCB for L2CA_UcdRegister, PSM: 0x%04x", psm);
return (FALSE);
}
p_rcb->ucd.state = L2C_UCD_STATE_W4_DATA;
p_rcb->ucd.cb_info = *p_cb_info;
/* check if master rcb is created for UCD */
if ((p_rcb = l2cu_find_rcb_by_psm (L2C_UCD_RCB_ID)) == NULL) {
if ((p_rcb = l2cu_allocate_rcb (L2C_UCD_RCB_ID)) == NULL) {
L2CAP_TRACE_ERROR ("L2CAP - no RCB available for L2CA_UcdRegister");
return (FALSE);
} else {
/* these callback functions will forward data to each UCD application */
p_rcb->ucd.cb_info.pL2CA_UCD_Discover_Cb = l2c_ucd_discover_cback;
p_rcb->ucd.cb_info.pL2CA_UCD_Data_Cb = l2c_ucd_data_ind_cback;
p_rcb->ucd.cb_info.pL2CA_UCD_Congestion_Status_Cb = l2c_ucd_congestion_status_cback;
memset (&p_rcb->api, 0, sizeof(tL2CAP_APPL_INFO));
p_rcb->api.pL2CA_DisconnectInd_Cb = l2c_ucd_disconnect_ind_cback;
/* This will make L2CAP check UCD congestion callback */
p_rcb->api.pL2CA_CongestionStatus_Cb = NULL;
/* do nothing but prevent crash */
p_rcb->api.pL2CA_ConfigInd_Cb = l2c_ucd_config_ind_cback;
p_rcb->api.pL2CA_ConfigCfm_Cb = l2c_ucd_config_cfm_cback;
}
}
return (TRUE);
}
/*******************************************************************************
**
** Function l2c_ucd_check_pending_info_req
**
** Description check if any application is waiting for UCD information
**
** Return TRUE if any pending UCD info request
**
*******************************************************************************/
BOOLEAN l2c_ucd_check_pending_info_req(tL2C_CCB *p_ccb)
{
tL2C_RCB *p_rcb = &l2cb.rcb_pool[0];
UINT16 xx;
BOOLEAN pending = FALSE;
if (p_ccb == NULL) {
L2CAP_TRACE_ERROR ("L2CAP - NULL p_ccb in l2c_ucd_check_pending_info_req");
return (FALSE);
}
for (xx = 0; xx < MAX_L2CAP_CLIENTS; xx++, p_rcb++) {
if (p_rcb->in_use) {
/* if application is waiting UCD reception info */
if (p_rcb->ucd.state & L2C_UCD_STATE_W4_RECEPTION) {
/* if this information is available */
if ( p_ccb->p_lcb->info_rx_bits & (1 << L2CAP_EXTENDED_FEATURES_INFO_TYPE) ) {
if (!(p_ccb->p_lcb->peer_ext_fea & L2CAP_EXTFEA_UCD_RECEPTION)) {
L2CAP_TRACE_WARNING ("L2CAP - UCD is not supported by peer, l2c_ucd_check_pending_info_req");
l2c_ucd_delete_sec_pending_q(p_ccb->p_lcb);
l2cu_release_ccb (p_ccb);
}
p_ccb->p_rcb->ucd.cb_info.pL2CA_UCD_Discover_Cb (p_ccb->p_lcb->remote_bd_addr,
L2CAP_UCD_INFO_TYPE_RECEPTION,
p_ccb->p_lcb->peer_ext_fea & L2CAP_EXTFEA_UCD_RECEPTION);
} else {
pending = TRUE;
if (p_ccb->p_lcb->w4_info_rsp == FALSE) {
l2cu_send_peer_info_req (p_ccb->p_lcb, L2CAP_EXTENDED_FEATURES_INFO_TYPE);
}
}
}
/* if application is waiting for UCD MTU */
if (p_rcb->ucd.state & L2C_UCD_STATE_W4_MTU) {
/* if this information is available */
if ( p_ccb->p_lcb->info_rx_bits & (1 << L2CAP_CONNLESS_MTU_INFO_TYPE)) {
p_ccb->p_rcb->ucd.cb_info.pL2CA_UCD_Discover_Cb (p_ccb->p_lcb->remote_bd_addr,
L2CAP_UCD_INFO_TYPE_MTU,
p_ccb->p_lcb->ucd_mtu);
} else {
pending = TRUE;
if (p_ccb->p_lcb->w4_info_rsp == FALSE) {
l2cu_send_peer_info_req (p_ccb->p_lcb, L2CAP_CONNLESS_MTU_INFO_TYPE);
}
}
}
}
}
return (pending);
}
/*******************************************************************************
**
** Function l2c_bcst_msg
**
** Description
**
** Returns void
**
*******************************************************************************/
void l2c_bcst_msg( BT_HDR *p_buf, UINT16 psm )
{
UINT8 *p;
/* Ensure we have enough space in the buffer for the L2CAP and HCI headers */
if (p_buf->offset < L2CAP_BCST_MIN_OFFSET) {
L2CAP_TRACE_ERROR ("L2CAP - cannot send buffer, offset: %d", p_buf->offset);
GKI_freebuf (p_buf);
return;
}
/* Step back some bytes to add the headers */
p_buf->offset -= (HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD + L2CAP_BCST_OVERHEAD);
p_buf->len += L2CAP_PKT_OVERHEAD + L2CAP_BCST_OVERHEAD;
/* Set the pointer to the beginning of the data */
p = (UINT8 *)(p_buf + 1) + p_buf->offset;
/* First, the HCI transport header */
UINT16_TO_STREAM (p, 0x0050 | (L2CAP_PKT_START << 12) | (2 << 14));
uint16_t acl_data_size = controller_get_interface()->get_acl_data_size_classic();
/* The HCI transport will segment the buffers. */
if (p_buf->len > acl_data_size) {
UINT16_TO_STREAM (p, acl_data_size);
} else {
UINT16_TO_STREAM (p, p_buf->len);
}
/* Now the L2CAP header */
UINT16_TO_STREAM (p, p_buf->len - L2CAP_PKT_OVERHEAD);
UINT16_TO_STREAM (p, L2CAP_CONNECTIONLESS_CID);
UINT16_TO_STREAM (p, psm);
p_buf->len += HCI_DATA_PREAMBLE_SIZE;
if (p_buf->len <= controller_get_interface()->get_acl_packet_size_classic()) {
//counter_add("l2cap.ch2.tx.bytes", p_buf->len);
//counter_add("l2cap.ch2.tx.pkts", 1);
bte_main_hci_send(p_buf, BT_EVT_TO_LM_HCI_ACL);
}
}
UINT8 l2c_data_write (UINT16 cid, BT_HDR *p_data, UINT16 flags)
{
tL2C_CCB *p_ccb;
/* Find the channel control block. We don't know the link it is on. */
if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) {
L2CAP_TRACE_WARNING ("L2CAP - no CCB for L2CA_DataWrite, CID: %d", cid);
GKI_freebuf (p_data);
return (L2CAP_DW_FAILED);
}
#ifndef TESTER /* Tester may send any amount of data. otherwise sending message
bigger than mtu size of peer is a violation of protocol */
if (p_data->len > p_ccb->peer_cfg.mtu) {
L2CAP_TRACE_WARNING ("L2CAP - CID: 0x%04x cannot send message bigger than peer's mtu size", cid);
GKI_freebuf (p_data);
return (L2CAP_DW_FAILED);
}
#endif
/* channel based, packet based flushable or non-flushable */
p_data->layer_specific = flags;
/* If already congested, do not accept any more packets */
if (p_ccb->cong_sent) {
L2CAP_TRACE_ERROR ("L2CAP - CID: 0x%04x cannot send, already congested xmit_hold_q.count: %u buff_quota: %u",
p_ccb->local_cid, GKI_queue_length(&p_ccb->xmit_hold_q), p_ccb->buff_quota);
GKI_freebuf (p_data);
return (L2CAP_DW_FAILED);
}
//counter_add("l2cap.dyn.tx.bytes", p_data->len);
//counter_add("l2cap.dyn.tx.pkts", 1);
l2c_csm_execute (p_ccb, L2CEVT_L2CA_DATA_WRITE, p_data);
if (p_ccb->cong_sent) {
return (L2CAP_DW_CONGESTED);
}
return (L2CAP_DW_SUCCESS);
}
/*******************************************************************************
**
** Function L2CA_UcdDeregister
**
** Description Deregister PSM on UCD.
**
** Parameters: PSM
**
** Return value: TRUE if successs
**
*******************************************************************************/
BOOLEAN L2CA_UcdDeregister ( UINT16 psm )
{
tL2C_CCB *p_ccb;
tL2C_RCB *p_rcb;
UINT16 xx;
L2CAP_TRACE_API ("L2CA_UcdDeregister() PSM: 0x%04x", psm);
if ((p_rcb = l2cu_find_rcb_by_psm (psm)) == NULL) {
L2CAP_TRACE_ERROR ("L2CAP - no RCB for L2CA_UcdDeregister, PSM: 0x%04x", psm);
return (FALSE);
}
p_rcb->ucd.state = L2C_UCD_STATE_UNUSED;
/* check this was the last UCD registration */
p_rcb = &l2cb.rcb_pool[0];
for (xx = 0; xx < MAX_L2CAP_CLIENTS; xx++, p_rcb++) {
if ((p_rcb->in_use) && (p_rcb->ucd.state != L2C_UCD_STATE_UNUSED)) {
return (TRUE);
}
}
/* delete master rcb for UCD */
if ((p_rcb = l2cu_find_rcb_by_psm (L2C_UCD_RCB_ID)) != NULL) {
l2cu_release_rcb (p_rcb);
}
/* delete CCB for UCD */
p_ccb = l2cb.ccb_pool;
for ( xx = 0; xx < MAX_L2CAP_CHANNELS; xx++ ) {
if (( p_ccb->in_use )
&& ( p_ccb->local_cid == L2CAP_CONNECTIONLESS_CID )) {
l2cu_release_ccb (p_ccb);
}
p_ccb++;
}
return (TRUE);
}
/*******************************************************************************
**
** Function l2c_ucd_data_ind_cback
**
** Description UCD Data callback
**
** Returns void
**
*******************************************************************************/
static void l2c_ucd_data_ind_cback (BD_ADDR rem_bda, BT_HDR *p_buf)
{
UINT8 *p;
UINT16 psm;
tL2C_RCB *p_rcb;
L2CAP_TRACE_DEBUG ("L2CAP - l2c_ucd_data_ind_cback");
p = (UINT8 *)(p_buf + 1) + p_buf->offset;
STREAM_TO_UINT16(psm, p)
p_buf->offset += L2CAP_UCD_OVERHEAD;
p_buf->len -= L2CAP_UCD_OVERHEAD;
if ((p_rcb = l2cu_find_rcb_by_psm (psm)) == NULL) {
L2CAP_TRACE_ERROR ("L2CAP - no RCB for l2c_ucd_data_ind_cback, PSM: 0x%04x", psm);
osi_free (p_buf);
} else {
p_rcb->ucd.cb_info.pL2CA_UCD_Data_Cb(rem_bda, p_buf);
}
}
/*******************************************************************************
**
** Function L2CA_UcdDataWrite
**
** Description Send UCD to remote device
**
** Parameters: PSM
** BD Address of remote
** Pointer to buffer of type BT_HDR
** flags : L2CAP_FLUSHABLE_CH_BASED
** L2CAP_FLUSHABLE_PKT
** L2CAP_NON_FLUSHABLE_PKT
**
** Return value L2CAP_DW_SUCCESS, if data accepted
** L2CAP_DW_FAILED, if error
**
*******************************************************************************/
UINT16 L2CA_UcdDataWrite (UINT16 psm, BD_ADDR rem_bda, BT_HDR *p_buf, UINT16 flags)
{
tL2C_LCB *p_lcb;
tL2C_CCB *p_ccb;
tL2C_RCB *p_rcb;
UINT8 *p;
L2CAP_TRACE_API ("L2CA_UcdDataWrite() PSM: 0x%04x BDA: %08x%04x", psm,
(rem_bda[0] << 24) + (rem_bda[1] << 16) + (rem_bda[2] << 8) + rem_bda[3],
(rem_bda[4] << 8) + rem_bda[5]);
/* Fail if the PSM is not registered */
if (((p_rcb = l2cu_find_rcb_by_psm (psm)) == NULL)
|| ( p_rcb->ucd.state == L2C_UCD_STATE_UNUSED )) {
L2CAP_TRACE_WARNING ("L2CAP - no RCB for L2CA_UcdDataWrite, PSM: 0x%04x", psm);
osi_free (p_buf);
return (L2CAP_DW_FAILED);
}
/* First, see if we already have a link to the remote */
/* then find the channel control block for UCD */
if (((p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda, BT_TRANSPORT_BR_EDR)) == NULL)
|| ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, L2CAP_CONNECTIONLESS_CID)) == NULL)) {
if ( l2c_ucd_connect (rem_bda) == FALSE ) {
osi_free (p_buf);
return (L2CAP_DW_FAILED);
}
/* If we still don't have lcb and ccb after connect attempt, then can't proceed */
if (((p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda, BT_TRANSPORT_BR_EDR)) == NULL)
|| ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, L2CAP_CONNECTIONLESS_CID)) == NULL)) {
osi_free (p_buf);
return (L2CAP_DW_FAILED);
}
}
/* write PSM */
p_buf->offset -= L2CAP_UCD_OVERHEAD;
p_buf->len += L2CAP_UCD_OVERHEAD;
p = (UINT8 *)(p_buf + 1) + p_buf->offset;
UINT16_TO_STREAM (p, psm);
/* UCD MTU check */
if ((p_lcb->ucd_mtu) && (p_buf->len > p_lcb->ucd_mtu)) {
L2CAP_TRACE_WARNING ("L2CAP - Handle: 0x%04x UCD bigger than peer's UCD mtu size cannot be sent", p_lcb->handle);
osi_free (p_buf);
return (L2CAP_DW_FAILED);
}
/* If already congested, do not accept any more packets */
if (p_ccb->cong_sent) {
L2CAP_TRACE_ERROR ("L2CAP - Handle: 0x%04x UCD cannot be sent, already congested count: %u buff_quota: %u",
p_lcb->handle,
(fixed_queue_length(p_ccb->xmit_hold_q) +
fixed_queue_length(p_lcb->ucd_out_sec_pending_q)),
p_ccb->buff_quota);
osi_free (p_buf);
return (L2CAP_DW_FAILED);
}
/* channel based, packet based flushable or non-flushable */
p_buf->layer_specific = flags;
l2c_csm_execute (p_ccb, L2CEVT_L2CA_DATA_WRITE, p_buf);
if (p_ccb->cong_sent) {
return (L2CAP_DW_CONGESTED);
} else {
return (L2CAP_DW_SUCCESS);
}
}
/*******************************************************************************
**
** Function l2cble_init_direct_conn
**
** Description This function is to initate a direct connection
**
** Returns TRUE connection initiated, FALSE otherwise.
**
*******************************************************************************/
BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (p_lcb->remote_bd_addr);
tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb;
UINT16 scan_int;
UINT16 scan_win;
BD_ADDR peer_addr;
UINT8 peer_addr_type = BLE_ADDR_PUBLIC;
UINT8 own_addr_type = BLE_ADDR_PUBLIC;
/* There can be only one BLE connection request outstanding at a time */
if (p_dev_rec == NULL)
{
L2CAP_TRACE_WARNING ("unknown device, can not initate connection");
return(FALSE);
}
scan_int = (p_cb->scan_int == BTM_BLE_SCAN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_INT : p_cb->scan_int;
scan_win = (p_cb->scan_win == BTM_BLE_SCAN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_WIN : p_cb->scan_win;
peer_addr_type = p_lcb->ble_addr_type;
memcpy(peer_addr, p_lcb->remote_bd_addr, BD_ADDR_LEN);
#if ( (defined BLE_PRIVACY_SPT) && (BLE_PRIVACY_SPT == TRUE))
own_addr_type = btm_cb.ble_ctr_cb.privacy_mode ? BLE_ADDR_RANDOM : BLE_ADDR_PUBLIC;
if (p_dev_rec->ble.in_controller_list & BTM_RESOLVING_LIST_BIT)
{
if (btm_cb.ble_ctr_cb.privacy_mode >= BTM_PRIVACY_1_2)
own_addr_type |= BLE_ADDR_TYPE_ID_BIT;
btm_ble_enable_resolving_list(BTM_BLE_RL_INIT);
btm_random_pseudo_to_identity_addr(peer_addr, &peer_addr_type);
}
else
btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, TRUE);
#endif
if (!btm_ble_topology_check(BTM_BLE_STATE_INIT))
{
l2cu_release_lcb (p_lcb);
L2CAP_TRACE_ERROR("initate direct connection fail, topology limitation");
return FALSE;
}
if (!btsnd_hcic_ble_create_ll_conn (scan_int,/* UINT16 scan_int */
scan_win, /* UINT16 scan_win */
FALSE, /* UINT8 white_list */
peer_addr_type, /* UINT8 addr_type_peer */
peer_addr, /* BD_ADDR bda_peer */
own_addr_type, /* UINT8 addr_type_own */
(UINT16) ((p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
p_dev_rec->conn_params.min_conn_int : BTM_BLE_CONN_INT_MIN_DEF), /* UINT16 conn_int_min */
(UINT16) ((p_dev_rec->conn_params.max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
p_dev_rec->conn_params.max_conn_int : BTM_BLE_CONN_INT_MAX_DEF), /* UINT16 conn_int_max */
(UINT16) ((p_dev_rec->conn_params.slave_latency != BTM_BLE_CONN_PARAM_UNDEF) ?
p_dev_rec->conn_params.slave_latency : BTM_BLE_CONN_SLAVE_LATENCY_DEF), /* UINT16 conn_latency */
(UINT16) ((p_dev_rec->conn_params.supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) ?
p_dev_rec->conn_params.supervision_tout : BTM_BLE_CONN_TIMEOUT_DEF), /* conn_timeout */
0, /* UINT16 min_len */
0)) /* UINT16 max_len */
{
l2cu_release_lcb (p_lcb);
L2CAP_TRACE_ERROR("initate direct connection fail, no resources");
return (FALSE);
}
else
{
p_lcb->link_state = LST_CONNECTING;
l2cb.is_ble_connecting = TRUE;
memcpy (l2cb.ble_connecting_bda, p_lcb->remote_bd_addr, BD_ADDR_LEN);
btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, L2CAP_BLE_LINK_CONNECT_TOUT);
btm_ble_set_conn_st (BLE_DIR_CONN);
return (TRUE);
}
}
/*******************************************************************************
**
** Function l2cble_advertiser_conn_comp
**
** Description This function is called when an HCI Connection Complete
** event is received while we are an advertiser (so we are slave).
**
** Returns void
**
*******************************************************************************/
void l2cble_advertiser_conn_comp (UINT16 handle, BD_ADDR bda, tBLE_ADDR_TYPE type,
UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
{
int i;
tL2C_LCB *p_lcb;
tBTM_SEC_DEV_REC *p_dev_rec;
UNUSED(type);
UNUSED(conn_interval);
UNUSED(conn_latency);
UNUSED(conn_timeout);
/* See if we have a link control block for the remote device */
p_lcb = l2cu_find_lcb_by_bd_addr (bda, BT_TRANSPORT_LE);
/* If we don't have one, create one and accept the connection. */
if (!p_lcb)
{
p_lcb = l2cu_allocate_lcb (bda, FALSE, BT_TRANSPORT_LE);
if (!p_lcb)
{
btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
L2CAP_TRACE_ERROR ("l2cble_advertiser_conn_comp - failed to allocate LCB");
return;
}
else
{
if (!l2cu_initialize_fixed_ccb (p_lcb, L2CAP_ATT_CID, &l2cb.fixed_reg[L2CAP_ATT_CID - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts))
{
btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
L2CAP_TRACE_WARNING ("l2cble_scanner_conn_comp - LCB but no CCB");
return ;
}
}
}
/* Save the handle */
p_lcb->handle = handle;
/* Connected OK. Change state to connected, we were advertising, so we are slave */
p_lcb->link_role = HCI_ROLE_SLAVE;
p_lcb->transport = BT_TRANSPORT_LE;
/* update link parameter, set slave link as non-spec default upon link up */
p_lcb->min_interval = p_lcb->max_interval = conn_interval;
p_lcb->timeout = conn_timeout;
p_lcb->latency = conn_latency;
p_lcb->conn_update_mask = L2C_BLE_NOT_DEFAULT_PARAM;
/* Tell BTM Acl management about the link */
p_dev_rec = btm_find_or_alloc_dev (bda);
btm_acl_created (bda, NULL, p_dev_rec->sec_bd_name, handle, p_lcb->link_role, BT_TRANSPORT_LE);
#if BLE_PRIVACY_SPT == TRUE
btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, TRUE);
#endif
p_lcb->peer_chnl_mask[0] = L2CAP_FIXED_CHNL_ATT_BIT | L2CAP_FIXED_CHNL_BLE_SIG_BIT | L2CAP_FIXED_CHNL_SMP_BIT;
if (!HCI_LE_SLAVE_INIT_FEAT_EXC_SUPPORTED(controller_get_interface()->get_features_ble()->as_array))
{
p_lcb->link_state = LST_CONNECTED;
l2cu_process_fixed_chnl_resp (p_lcb);
}
/* when adv and initiating are both active, cancel the direct connection */
if (l2cb.is_ble_connecting && memcmp(bda, l2cb.ble_connecting_bda, BD_ADDR_LEN) == 0)
{
L2CA_CancelBleConnectReq(bda);
}
}
/*******************************************************************************
**
** Function l2cble_scanner_conn_comp
**
** Description This function is called when an HCI Connection Complete
** event is received while we are a scanner (so we are master).
**
** Returns void
**
*******************************************************************************/
void l2cble_scanner_conn_comp (UINT16 handle, BD_ADDR bda, tBLE_ADDR_TYPE type,
UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
{
int i;
tL2C_LCB *p_lcb;
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (bda);
L2CAP_TRACE_DEBUG ("l2cble_scanner_conn_comp: HANDLE=%d addr_type=%d conn_interval=%d slave_latency=%d supervision_tout=%d",
handle, type, conn_interval, conn_latency, conn_timeout);
l2cb.is_ble_connecting = FALSE;
/* See if we have a link control block for the remote device */
p_lcb = l2cu_find_lcb_by_bd_addr (bda, BT_TRANSPORT_LE);
/* If we don't have one, create one. this is auto connection complete. */
if (!p_lcb)
{
p_lcb = l2cu_allocate_lcb (bda, FALSE, BT_TRANSPORT_LE);
if (!p_lcb)
{
btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
L2CAP_TRACE_ERROR ("l2cble_scanner_conn_comp - failed to allocate LCB");
return;
}
else
{
if (!l2cu_initialize_fixed_ccb (p_lcb, L2CAP_ATT_CID, &l2cb.fixed_reg[L2CAP_ATT_CID - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts))
{
btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
L2CAP_TRACE_WARNING ("l2cble_scanner_conn_comp - LCB but no CCB");
return ;
}
}
}
else if (p_lcb->link_state != LST_CONNECTING)
{
L2CAP_TRACE_ERROR ("L2CAP got BLE scanner conn_comp in bad state: %d", p_lcb->link_state);
return;
}
btu_stop_timer(&p_lcb->timer_entry);
/* Save the handle */
p_lcb->handle = handle;
/* Connected OK. Change state to connected, we were scanning so we are master */
p_lcb->link_role = HCI_ROLE_MASTER;
p_lcb->transport = BT_TRANSPORT_LE;
/* update link parameter, set slave link as non-spec default upon link up */
p_lcb->min_interval = p_lcb->max_interval = conn_interval;
p_lcb->timeout = conn_timeout;
p_lcb->latency = conn_latency;
p_lcb->conn_update_mask = L2C_BLE_NOT_DEFAULT_PARAM;
/* If there are any preferred connection parameters, set them now */
if ( (p_dev_rec->conn_params.min_conn_int >= BTM_BLE_CONN_INT_MIN ) &&
(p_dev_rec->conn_params.min_conn_int <= BTM_BLE_CONN_INT_MAX ) &&
(p_dev_rec->conn_params.max_conn_int >= BTM_BLE_CONN_INT_MIN ) &&
(p_dev_rec->conn_params.max_conn_int <= BTM_BLE_CONN_INT_MAX ) &&
(p_dev_rec->conn_params.slave_latency <= BTM_BLE_CONN_LATENCY_MAX ) &&
(p_dev_rec->conn_params.supervision_tout >= BTM_BLE_CONN_SUP_TOUT_MIN) &&
(p_dev_rec->conn_params.supervision_tout <= BTM_BLE_CONN_SUP_TOUT_MAX) &&
((conn_interval < p_dev_rec->conn_params.min_conn_int &&
p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ||
(conn_interval > p_dev_rec->conn_params.max_conn_int) ||
(conn_latency > p_dev_rec->conn_params.slave_latency) ||
(conn_timeout > p_dev_rec->conn_params.supervision_tout)))
{
L2CAP_TRACE_ERROR ("upd_ll_conn_params: HANDLE=%d min_conn_int=%d max_conn_int=%d slave_latency=%d supervision_tout=%d",
handle, p_dev_rec->conn_params.min_conn_int, p_dev_rec->conn_params.max_conn_int,
p_dev_rec->conn_params.slave_latency, p_dev_rec->conn_params.supervision_tout);
p_lcb->min_interval = p_dev_rec->conn_params.min_conn_int;
p_lcb->max_interval = p_dev_rec->conn_params.max_conn_int;
p_lcb->timeout = p_dev_rec->conn_params.supervision_tout;
p_lcb->latency = p_dev_rec->conn_params.slave_latency;
btsnd_hcic_ble_upd_ll_conn_params (handle,
p_dev_rec->conn_params.min_conn_int,
p_dev_rec->conn_params.max_conn_int,
p_dev_rec->conn_params.slave_latency,
p_dev_rec->conn_params.supervision_tout,
0, 0);
}
/* Tell BTM Acl management about the link */
btm_acl_created (bda, NULL, p_dev_rec->sec_bd_name, handle, p_lcb->link_role, BT_TRANSPORT_LE);
p_lcb->peer_chnl_mask[0] = L2CAP_FIXED_CHNL_ATT_BIT | L2CAP_FIXED_CHNL_BLE_SIG_BIT | L2CAP_FIXED_CHNL_SMP_BIT;
btm_ble_set_conn_st(BLE_CONN_IDLE);
#if BLE_PRIVACY_SPT == TRUE
btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, TRUE);
#endif
}
static void process_l2cap_cmd (tL2C_LCB *p_lcb, UINT8 *p, UINT16 pkt_len)
{
UINT8 *p_pkt_end, *p_next_cmd, *p_cfg_end, *p_cfg_start;
UINT8 cmd_code, cfg_code, cfg_len, id;
tL2C_CONN_INFO con_info;
tL2CAP_CFG_INFO cfg_info;
UINT16 rej_reason, rej_mtu, lcid, rcid, info_type;
tL2C_CCB *p_ccb;
tL2C_RCB *p_rcb;
BOOLEAN cfg_rej, pkt_size_rej = FALSE;
UINT16 cfg_rej_len, cmd_len;
UINT16 result;
tL2C_CONN_INFO ci;
#if (defined BLE_INCLUDED && BLE_INCLUDED == TRUE)
/* if l2cap command received in CID 1 on top of an LE link, ignore this command */
if (p_lcb->transport == BT_TRANSPORT_LE) {
return;
}
#endif
/* Reject the packet if it exceeds the default Signalling Channel MTU */
if (pkt_len > L2CAP_DEFAULT_MTU) {
/* Core Spec requires a single response to the first command found in a multi-command
** L2cap packet. If only responses in the packet, then it will be ignored.
** Here we simply mark the bad packet and decide which cmd ID to reject later
*/
pkt_size_rej = TRUE;
L2CAP_TRACE_ERROR ("L2CAP SIG MTU Pkt Len Exceeded (672) -> pkt_len: %d", pkt_len);
}
p_next_cmd = p;
p_pkt_end = p + pkt_len;
memset (&cfg_info, 0, sizeof(cfg_info));
/* An L2CAP packet may contain multiple commands */
while (TRUE) {
/* Smallest command is 4 bytes */
if ((p = p_next_cmd) > (p_pkt_end - 4)) {
break;
}
STREAM_TO_UINT8 (cmd_code, p);
STREAM_TO_UINT8 (id, p);
STREAM_TO_UINT16 (cmd_len, p);
/* Check command length does not exceed packet length */
if ((p_next_cmd = p + cmd_len) > p_pkt_end) {
L2CAP_TRACE_WARNING ("Command len bad pkt_len: %d cmd_len: %d code: %d",
pkt_len, cmd_len, cmd_code);
break;
}
L2CAP_TRACE_DEBUG ("cmd_code: %d, id:%d, cmd_len:%d", cmd_code, id, cmd_len);
/* Bad L2CAP packet length, look or cmd to reject */
if (pkt_size_rej) {
/* If command found rejected it and we're done, otherwise keep looking */
if (l2c_is_cmd_rejected(cmd_code, id, p_lcb)) {
return;
} else {
continue; /* Look for next cmd/response in current packet */
}
}
switch (cmd_code) {
case L2CAP_CMD_REJECT:
STREAM_TO_UINT16 (rej_reason, p);
if (rej_reason == L2CAP_CMD_REJ_MTU_EXCEEDED) {
STREAM_TO_UINT16 (rej_mtu, p);
/* What to do with the MTU reject ? We have negotiated an MTU. For now */
/* we will ignore it and let a higher protocol timeout take care of it */
L2CAP_TRACE_WARNING ("L2CAP - MTU rej Handle: %d MTU: %d", p_lcb->handle, rej_mtu);
}
if (rej_reason == L2CAP_CMD_REJ_INVALID_CID) {
STREAM_TO_UINT16 (rcid, p);
STREAM_TO_UINT16 (lcid, p);
L2CAP_TRACE_WARNING ("L2CAP - rej with CID invalid, LCID: 0x%04x RCID: 0x%04x", lcid, rcid);
/* Remote CID invalid. Treat as a disconnect */
if (((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) != NULL)
&& (p_ccb->remote_cid == rcid)) {
/* Fake link disconnect - no reply is generated */
l2c_csm_execute (p_ccb, L2CEVT_LP_DISCONNECT_IND, NULL);
}
}
/* SonyEricsson Info request Bug workaround (Continue connection) */
else if (rej_reason == L2CAP_CMD_REJ_NOT_UNDERSTOOD && p_lcb->w4_info_rsp) {
btu_stop_timer (&p_lcb->info_timer_entry);
p_lcb->w4_info_rsp = FALSE;
ci.status = HCI_SUCCESS;
memcpy (ci.bd_addr, p_lcb->remote_bd_addr, sizeof(BD_ADDR));
/* For all channels, send the event through their FSMs */
for (p_ccb = p_lcb->ccb_queue.p_first_ccb; p_ccb; p_ccb = p_ccb->p_next_ccb) {
l2c_csm_execute (p_ccb, L2CEVT_L2CAP_INFO_RSP, &ci);
}
}
break;
case L2CAP_CMD_CONN_REQ:
STREAM_TO_UINT16 (con_info.psm, p);
STREAM_TO_UINT16 (rcid, p);
if ((p_rcb = l2cu_find_rcb_by_psm (con_info.psm)) == NULL) {
L2CAP_TRACE_WARNING ("L2CAP - rcvd conn req for unknown PSM: %d", con_info.psm);
l2cu_reject_connection (p_lcb, rcid, id, L2CAP_CONN_NO_PSM);
break;
} else {
if (!p_rcb->api.pL2CA_ConnectInd_Cb) {
L2CAP_TRACE_WARNING ("L2CAP - rcvd conn req for outgoing-only connection PSM: %d", con_info.psm);
l2cu_reject_connection (p_lcb, rcid, id, L2CAP_CONN_NO_PSM);
break;
}
}
if ((p_ccb = l2cu_allocate_ccb (p_lcb, 0)) == NULL) {
L2CAP_TRACE_ERROR ("L2CAP - unable to allocate CCB");
l2cu_reject_connection (p_lcb, rcid, id, L2CAP_CONN_NO_RESOURCES);
break;
}
p_ccb->remote_id = id;
p_ccb->p_rcb = p_rcb;
p_ccb->remote_cid = rcid;
l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_REQ, &con_info);
break;
case L2CAP_CMD_CONN_RSP:
STREAM_TO_UINT16 (con_info.remote_cid, p);
STREAM_TO_UINT16 (lcid, p);
STREAM_TO_UINT16 (con_info.l2cap_result, p);
STREAM_TO_UINT16 (con_info.l2cap_status, p);
if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) == NULL) {
L2CAP_TRACE_WARNING ("L2CAP - no CCB for conn rsp, LCID: %d RCID: %d",
lcid, con_info.remote_cid);
break;
}
if (p_ccb->local_id != id) {
L2CAP_TRACE_WARNING ("L2CAP - con rsp - bad ID. Exp: %d Got: %d",
p_ccb->local_id, id);
break;
}
if (con_info.l2cap_result == L2CAP_CONN_OK) {
l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_RSP, &con_info);
} else if (con_info.l2cap_result == L2CAP_CONN_PENDING) {
l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_RSP_PND, &con_info);
} else {
l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_RSP_NEG, &con_info);
}
break;
case L2CAP_CMD_CONFIG_REQ:
p_cfg_end = p + cmd_len;
cfg_rej = FALSE;
cfg_rej_len = 0;
STREAM_TO_UINT16 (lcid, p);
STREAM_TO_UINT16 (cfg_info.flags, p);
p_cfg_start = p;
cfg_info.flush_to_present = cfg_info.mtu_present = cfg_info.qos_present =
cfg_info.fcr_present = cfg_info.fcs_present = FALSE;
while (p < p_cfg_end) {
STREAM_TO_UINT8 (cfg_code, p);
STREAM_TO_UINT8 (cfg_len, p);
switch (cfg_code & 0x7F) {
case L2CAP_CFG_TYPE_MTU:
cfg_info.mtu_present = TRUE;
STREAM_TO_UINT16 (cfg_info.mtu, p);
break;
case L2CAP_CFG_TYPE_FLUSH_TOUT:
cfg_info.flush_to_present = TRUE;
STREAM_TO_UINT16 (cfg_info.flush_to, p);
break;
case L2CAP_CFG_TYPE_QOS:
cfg_info.qos_present = TRUE;
STREAM_TO_UINT8 (cfg_info.qos.qos_flags, p);
STREAM_TO_UINT8 (cfg_info.qos.service_type, p);
STREAM_TO_UINT32 (cfg_info.qos.token_rate, p);
STREAM_TO_UINT32 (cfg_info.qos.token_bucket_size, p);
STREAM_TO_UINT32 (cfg_info.qos.peak_bandwidth, p);
STREAM_TO_UINT32 (cfg_info.qos.latency, p);
STREAM_TO_UINT32 (cfg_info.qos.delay_variation, p);
break;
case L2CAP_CFG_TYPE_FCR:
cfg_info.fcr_present = TRUE;
STREAM_TO_UINT8 (cfg_info.fcr.mode, p);
STREAM_TO_UINT8 (cfg_info.fcr.tx_win_sz, p);
STREAM_TO_UINT8 (cfg_info.fcr.max_transmit, p);
STREAM_TO_UINT16 (cfg_info.fcr.rtrans_tout, p);
STREAM_TO_UINT16 (cfg_info.fcr.mon_tout, p);
STREAM_TO_UINT16 (cfg_info.fcr.mps, p);
break;
case L2CAP_CFG_TYPE_FCS:
cfg_info.fcs_present = TRUE;
STREAM_TO_UINT8 (cfg_info.fcs, p);
break;
case L2CAP_CFG_TYPE_EXT_FLOW:
cfg_info.ext_flow_spec_present = TRUE;
STREAM_TO_UINT8 (cfg_info.ext_flow_spec.id, p);
STREAM_TO_UINT8 (cfg_info.ext_flow_spec.stype, p);
STREAM_TO_UINT16 (cfg_info.ext_flow_spec.max_sdu_size, p);
STREAM_TO_UINT32 (cfg_info.ext_flow_spec.sdu_inter_time, p);
STREAM_TO_UINT32 (cfg_info.ext_flow_spec.access_latency, p);
STREAM_TO_UINT32 (cfg_info.ext_flow_spec.flush_timeout, p);
break;
default:
/* sanity check option length */
if ((cfg_len + L2CAP_CFG_OPTION_OVERHEAD) <= cmd_len) {
p += cfg_len;
if ((cfg_code & 0x80) == 0) {
cfg_rej_len += cfg_len + L2CAP_CFG_OPTION_OVERHEAD;
cfg_rej = TRUE;
}
}
/* bad length; force loop exit */
else {
p = p_cfg_end;
cfg_rej = TRUE;
}
break;
}
}
if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) != NULL) {
p_ccb->remote_id = id;
if (cfg_rej) {
l2cu_send_peer_config_rej (p_ccb, p_cfg_start, (UINT16) (cmd_len - L2CAP_CONFIG_REQ_LEN), cfg_rej_len);
} else {
l2c_csm_execute (p_ccb, L2CEVT_L2CAP_CONFIG_REQ, &cfg_info);
}
} else {
/* updated spec says send command reject on invalid cid */
l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_INVALID_CID, id, 0, 0);
}
break;
case L2CAP_CMD_CONFIG_RSP:
p_cfg_end = p + cmd_len;
STREAM_TO_UINT16 (lcid, p);
STREAM_TO_UINT16 (cfg_info.flags, p);
STREAM_TO_UINT16 (cfg_info.result, p);
cfg_info.flush_to_present = cfg_info.mtu_present = cfg_info.qos_present =
cfg_info.fcr_present = cfg_info.fcs_present = FALSE;
while (p < p_cfg_end) {
STREAM_TO_UINT8 (cfg_code, p);
STREAM_TO_UINT8 (cfg_len, p);
switch (cfg_code & 0x7F) {
case L2CAP_CFG_TYPE_MTU:
cfg_info.mtu_present = TRUE;
STREAM_TO_UINT16 (cfg_info.mtu, p);
break;
case L2CAP_CFG_TYPE_FLUSH_TOUT:
cfg_info.flush_to_present = TRUE;
STREAM_TO_UINT16 (cfg_info.flush_to, p);
break;
case L2CAP_CFG_TYPE_QOS:
cfg_info.qos_present = TRUE;
STREAM_TO_UINT8 (cfg_info.qos.qos_flags, p);
STREAM_TO_UINT8 (cfg_info.qos.service_type, p);
STREAM_TO_UINT32 (cfg_info.qos.token_rate, p);
STREAM_TO_UINT32 (cfg_info.qos.token_bucket_size, p);
STREAM_TO_UINT32 (cfg_info.qos.peak_bandwidth, p);
STREAM_TO_UINT32 (cfg_info.qos.latency, p);
STREAM_TO_UINT32 (cfg_info.qos.delay_variation, p);
break;
case L2CAP_CFG_TYPE_FCR:
cfg_info.fcr_present = TRUE;
STREAM_TO_UINT8 (cfg_info.fcr.mode, p);
STREAM_TO_UINT8 (cfg_info.fcr.tx_win_sz, p);
STREAM_TO_UINT8 (cfg_info.fcr.max_transmit, p);
STREAM_TO_UINT16 (cfg_info.fcr.rtrans_tout, p);
STREAM_TO_UINT16 (cfg_info.fcr.mon_tout, p);
STREAM_TO_UINT16 (cfg_info.fcr.mps, p);
break;
case L2CAP_CFG_TYPE_FCS:
cfg_info.fcs_present = TRUE;
STREAM_TO_UINT8 (cfg_info.fcs, p);
break;
case L2CAP_CFG_TYPE_EXT_FLOW:
cfg_info.ext_flow_spec_present = TRUE;
STREAM_TO_UINT8 (cfg_info.ext_flow_spec.id, p);
STREAM_TO_UINT8 (cfg_info.ext_flow_spec.stype, p);
STREAM_TO_UINT16 (cfg_info.ext_flow_spec.max_sdu_size, p);
STREAM_TO_UINT32 (cfg_info.ext_flow_spec.sdu_inter_time, p);
STREAM_TO_UINT32 (cfg_info.ext_flow_spec.access_latency, p);
STREAM_TO_UINT32 (cfg_info.ext_flow_spec.flush_timeout, p);
break;
}
}
if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) != NULL) {
if (p_ccb->local_id != id) {
L2CAP_TRACE_WARNING ("L2CAP - cfg rsp - bad ID. Exp: %d Got: %d",
p_ccb->local_id, id);
break;
}
if ( (cfg_info.result == L2CAP_CFG_OK) || (cfg_info.result == L2CAP_CFG_PENDING) ) {
l2c_csm_execute (p_ccb, L2CEVT_L2CAP_CONFIG_RSP, &cfg_info);
} else {
l2c_csm_execute (p_ccb, L2CEVT_L2CAP_CONFIG_RSP_NEG, &cfg_info);
}
} else {
L2CAP_TRACE_WARNING ("L2CAP - rcvd cfg rsp for unknown CID: 0x%04x", lcid);
}
break;
case L2CAP_CMD_DISC_REQ:
STREAM_TO_UINT16 (lcid, p);
STREAM_TO_UINT16 (rcid, p);
if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) != NULL) {
if (p_ccb->remote_cid == rcid) {
p_ccb->remote_id = id;
l2c_csm_execute (p_ccb, L2CEVT_L2CAP_DISCONNECT_REQ, &con_info);
}
} else {
l2cu_send_peer_disc_rsp (p_lcb, id, lcid, rcid);
}
break;
case L2CAP_CMD_DISC_RSP:
STREAM_TO_UINT16 (rcid, p);
STREAM_TO_UINT16 (lcid, p);
if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) != NULL) {
if ((p_ccb->remote_cid == rcid) && (p_ccb->local_id == id)) {
l2c_csm_execute (p_ccb, L2CEVT_L2CAP_DISCONNECT_RSP, &con_info);
}
}
break;
case L2CAP_CMD_ECHO_REQ:
l2cu_send_peer_echo_rsp (p_lcb, id, NULL, 0);
break;
case L2CAP_CMD_ECHO_RSP:
if (p_lcb->p_echo_rsp_cb) {
tL2CA_ECHO_RSP_CB *p_cb = p_lcb->p_echo_rsp_cb;
/* Zero out the callback in case app immediately calls us again */
p_lcb->p_echo_rsp_cb = NULL;
(*p_cb) (L2CAP_PING_RESULT_OK);
}
break;
case L2CAP_CMD_INFO_REQ:
STREAM_TO_UINT16 (info_type, p);
l2cu_send_peer_info_rsp (p_lcb, id, info_type);
break;
case L2CAP_CMD_INFO_RSP:
/* Stop the link connect timer if sent before L2CAP connection is up */
if (p_lcb->w4_info_rsp) {
btu_stop_timer (&p_lcb->info_timer_entry);
p_lcb->w4_info_rsp = FALSE;
}
STREAM_TO_UINT16 (info_type, p);
STREAM_TO_UINT16 (result, p);
p_lcb->info_rx_bits |= (1 << info_type);
if ( (info_type == L2CAP_EXTENDED_FEATURES_INFO_TYPE)
&& (result == L2CAP_INFO_RESP_RESULT_SUCCESS) ) {
STREAM_TO_UINT32( p_lcb->peer_ext_fea, p );
#if (L2CAP_NUM_FIXED_CHNLS > 0)
if (p_lcb->peer_ext_fea & L2CAP_EXTFEA_FIXED_CHNLS) {
l2cu_send_peer_info_req (p_lcb, L2CAP_FIXED_CHANNELS_INFO_TYPE);
break;
} else {
l2cu_process_fixed_chnl_resp (p_lcb);
}
#endif
}
#if (L2CAP_NUM_FIXED_CHNLS > 0)
if (info_type == L2CAP_FIXED_CHANNELS_INFO_TYPE) {
if (result == L2CAP_INFO_RESP_RESULT_SUCCESS) {
memcpy (p_lcb->peer_chnl_mask, p, L2CAP_FIXED_CHNL_ARRAY_SIZE);
}
l2cu_process_fixed_chnl_resp (p_lcb);
}
#endif
#if (L2CAP_UCD_INCLUDED == TRUE)
else if (info_type == L2CAP_CONNLESS_MTU_INFO_TYPE) {
if (result == L2CAP_INFO_RESP_RESULT_SUCCESS) {
STREAM_TO_UINT16 (p_lcb->ucd_mtu, p);
}
}
#endif
ci.status = HCI_SUCCESS;
memcpy (ci.bd_addr, p_lcb->remote_bd_addr, sizeof(BD_ADDR));
for (p_ccb = p_lcb->ccb_queue.p_first_ccb; p_ccb; p_ccb = p_ccb->p_next_ccb) {
l2c_csm_execute (p_ccb, L2CEVT_L2CAP_INFO_RSP, &ci);
}
break;
default:
L2CAP_TRACE_WARNING ("L2CAP - bad cmd code: %d", cmd_code);
l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
return;
}
}
}
/*******************************************************************************
**
** Function l2c_rcv_acl_data
**
** Description This function is called from the HCI Interface when an ACL
** data packet is received.
**
** Returns void
**
*******************************************************************************/
void l2c_rcv_acl_data (BT_HDR *p_msg)
{
UINT8 *p = (UINT8 *)(p_msg + 1) + p_msg->offset;
UINT16 handle, hci_len;
UINT8 pkt_type;
tL2C_LCB *p_lcb;
tL2C_CCB *p_ccb = NULL;
UINT16 l2cap_len, rcv_cid, psm;
/* Extract the handle */
STREAM_TO_UINT16 (handle, p);
pkt_type = HCID_GET_EVENT (handle);
handle = HCID_GET_HANDLE (handle);
/* Since the HCI Transport is putting segmented packets back together, we */
/* should never get a valid packet with the type set to "continuation" */
if (pkt_type != L2CAP_PKT_CONTINUE) {
/* Find the LCB based on the handle */
if ((p_lcb = l2cu_find_lcb_by_handle (handle)) == NULL) {
UINT8 cmd_code;
/* There is a slight possibility (specifically with USB) that we get an */
/* L2CAP connection request before we get the HCI connection complete. */
/* So for these types of messages, hold them for up to 2 seconds. */
STREAM_TO_UINT16 (hci_len, p);
STREAM_TO_UINT16 (l2cap_len, p);
STREAM_TO_UINT16 (rcv_cid, p);
STREAM_TO_UINT8 (cmd_code, p);
if ((p_msg->layer_specific == 0) && (rcv_cid == L2CAP_SIGNALLING_CID)
&& (cmd_code == L2CAP_CMD_INFO_REQ || cmd_code == L2CAP_CMD_CONN_REQ)) {
L2CAP_TRACE_WARNING ("L2CAP - holding ACL for unknown handle:%d ls:%d"
" cid:%d opcode:%d cur count:%d", handle, p_msg->layer_specific,
rcv_cid, cmd_code, list_length(l2cb.rcv_pending_q));
p_msg->layer_specific = 2;
list_append(l2cb.rcv_pending_q, p_msg);
if (list_length(l2cb.rcv_pending_q) == 1) {
btu_start_timer (&l2cb.rcv_hold_tle, BTU_TTYPE_L2CAP_HOLD, BT_1SEC_TIMEOUT);
}
return;
} else {
L2CAP_TRACE_ERROR ("L2CAP - rcvd ACL for unknown handle:%d ls:%d cid:%d"
" opcode:%d cur count:%d", handle, p_msg->layer_specific, rcv_cid,
cmd_code, list_length(l2cb.rcv_pending_q));
}
GKI_freebuf (p_msg);
return;
}
} else {
L2CAP_TRACE_WARNING ("L2CAP - expected pkt start or complete, got: %d", pkt_type);
GKI_freebuf (p_msg);
return;
}
/* Extract the length and update the buffer header */
STREAM_TO_UINT16 (hci_len, p);
p_msg->offset += 4;
/* Extract the length and CID */
STREAM_TO_UINT16 (l2cap_len, p);
STREAM_TO_UINT16 (rcv_cid, p);
#if BLE_INCLUDED == TRUE
/* for BLE channel, always notify connection when ACL data received on the link */
if (p_lcb && p_lcb->transport == BT_TRANSPORT_LE && p_lcb->link_state != LST_DISCONNECTING)
/* only process fixed channel data as channel open indication when link is not in disconnecting mode */
{
l2cble_notify_le_connection(p_lcb->remote_bd_addr);
}
#endif
L2CAP_TRACE_DEBUG ("L2CAP - rcv_cid CID: 0x%04x\n", rcv_cid);
/* Find the CCB for this CID */
if (rcv_cid >= L2CAP_BASE_APPL_CID) {
if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, rcv_cid)) == NULL) {
L2CAP_TRACE_WARNING ("L2CAP - unknown CID: 0x%04x", rcv_cid);
GKI_freebuf (p_msg);
return;
}
}
if (hci_len >= L2CAP_PKT_OVERHEAD) { /* Must receive at least the L2CAP length and CID.*/
p_msg->len = hci_len - L2CAP_PKT_OVERHEAD;
p_msg->offset += L2CAP_PKT_OVERHEAD;
} else {
L2CAP_TRACE_WARNING ("L2CAP - got incorrect hci header" );
GKI_freebuf (p_msg);
return;
}
if (l2cap_len != p_msg->len) {
L2CAP_TRACE_WARNING ("L2CAP - bad length in pkt. Exp: %d Act: %d",
l2cap_len, p_msg->len);
GKI_freebuf (p_msg);
return;
}
/* Send the data through the channel state machine */
if (rcv_cid == L2CAP_SIGNALLING_CID) {
//counter_add("l2cap.sig.rx.bytes", l2cap_len);
//counter_add("l2cap.sig.rx.pkts", 1);
#if (CLASSIC_BT_INCLUDED == TRUE)
process_l2cap_cmd (p_lcb, p, l2cap_len);
#endif ///CLASSIC_BT_INCLUDED == TRUE
GKI_freebuf (p_msg);
} else if (rcv_cid == L2CAP_CONNECTIONLESS_CID) {
//counter_add("l2cap.ch2.rx.bytes", l2cap_len);
//counter_add("l2cap.ch2.rx.pkts", 1);
/* process_connectionless_data (p_lcb); */
STREAM_TO_UINT16 (psm, p);
L2CAP_TRACE_DEBUG( "GOT CONNECTIONLESS DATA PSM:%d", psm ) ;
#if (L2CAP_UCD_INCLUDED == TRUE)
/* if it is not broadcast, check UCD registration */
if ( l2c_ucd_check_rx_pkts( p_lcb, p_msg ) ) {
/* nothing to do */
} else
#endif
GKI_freebuf (p_msg);
}
#if (BLE_INCLUDED == TRUE)
else if (rcv_cid == L2CAP_BLE_SIGNALLING_CID) {
//counter_add("l2cap.ble.rx.bytes", l2cap_len);
//counter_add("l2cap.ble.rx.pkts", 1);
l2cble_process_sig_cmd (p_lcb, p, l2cap_len);
GKI_freebuf (p_msg);
}
#endif
#if (L2CAP_NUM_FIXED_CHNLS > 0)
else if ((rcv_cid >= L2CAP_FIRST_FIXED_CHNL) && (rcv_cid <= L2CAP_LAST_FIXED_CHNL) &&
(l2cb.fixed_reg[rcv_cid - L2CAP_FIRST_FIXED_CHNL].pL2CA_FixedData_Cb != NULL) ) {
//counter_add("l2cap.fix.rx.bytes", l2cap_len);
//counter_add("l2cap.fix.rx.pkts", 1);
/* If no CCB for this channel, allocate one */
if (p_lcb &&
/* only process fixed channel data when link is open or wait for data indication */
(p_lcb->link_state != LST_DISCONNECTING) &&
l2cu_initialize_fixed_ccb (p_lcb, rcv_cid, &l2cb.fixed_reg[rcv_cid - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts)) {
p_ccb = p_lcb->p_fixed_ccbs[rcv_cid - L2CAP_FIRST_FIXED_CHNL];
if (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_BASIC_MODE) {
#if (CLASSIC_BT_INCLUDED == TRUE)
l2c_fcr_proc_pdu (p_ccb, p_msg);
#endif ///CLASSIC_BT_INCLUDED == TRUE
} else
(*l2cb.fixed_reg[rcv_cid - L2CAP_FIRST_FIXED_CHNL].pL2CA_FixedData_Cb)
(rcv_cid, p_lcb->remote_bd_addr, p_msg);
} else {
GKI_freebuf (p_msg);
}
}
#endif
else {
//counter_add("l2cap.dyn.rx.bytes", l2cap_len);
//counter_add("l2cap.dyn.rx.pkts", 1);
if (p_ccb == NULL) {
GKI_freebuf (p_msg);
} else {
/* Basic mode packets go straight to the state machine */
if (p_ccb->peer_cfg.fcr.mode == L2CAP_FCR_BASIC_MODE) {
#if (CLASSIC_BT_INCLUDED == TRUE)
l2c_csm_execute (p_ccb, L2CEVT_L2CAP_DATA, p_msg);
#endif ///CLASSIC_BT_INCLUDED == TRUE
} else {
/* eRTM or streaming mode, so we need to validate states first */
if ((p_ccb->chnl_state == CST_OPEN) || (p_ccb->chnl_state == CST_CONFIG)) {
#if (CLASSIC_BT_INCLUDED == TRUE)
l2c_fcr_proc_pdu (p_ccb, p_msg);
#endif ///CLASSIC_BT_INCLUDED == TRUE
} else {
GKI_freebuf (p_msg);
}
}
}
}
}
/*******************************************************************************
**
** Function l2cble_init_direct_conn
**
** Description This function is to initate a direct connection
**
** Returns TRUE connection initiated, FALSE otherwise.
**
*******************************************************************************/
BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (p_lcb->remote_bd_addr);
tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb;
UINT16 scan_int, scan_win;
BD_ADDR init_addr;
UINT8 init_addr_type = BLE_ADDR_PUBLIC,
own_addr_type = BLE_ADDR_PUBLIC;
/* There can be only one BLE connection request outstanding at a time */
if (p_dev_rec == NULL)
{
L2CAP_TRACE_WARNING ("unknown device, can not initate connection");
return(FALSE);
}
scan_int = (p_cb->scan_int == BTM_BLE_CONN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_INT : p_cb->scan_int;
scan_win = (p_cb->scan_win == BTM_BLE_CONN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_WIN : p_cb->scan_win;
init_addr_type = p_lcb->ble_addr_type;
memcpy(init_addr, p_lcb->remote_bd_addr, BD_ADDR_LEN);
#if BLE_PRIVACY_SPT == TRUE
/* if RPA offloading supported */
if (btm_ble_vendor_irk_list_load_dev(p_dev_rec))
btm_random_pseudo_to_public(init_addr, &init_addr_type);
/* otherwise, if remote is RPA enabled, use latest RPA */
else if (p_dev_rec->ble.active_addr_type == BTM_BLE_ADDR_RRA)
{
init_addr_type = BLE_ADDR_RANDOM;
memcpy(init_addr, p_dev_rec->ble.cur_rand_addr, BD_ADDR_LEN);
}
/* if privacy is on and current do not consider using reconnection address */
if (btm_cb.ble_ctr_cb.privacy ) /* && p_dev_rec->ble.use_reconn_addr */
own_addr_type = BLE_ADDR_RANDOM;
#endif
if (!btm_ble_topology_check(BTM_BLE_STATE_INIT))
{
l2cu_release_lcb (p_lcb);
L2CAP_TRACE_ERROR("initate direct connection fail, topology limitation");
return FALSE;
}
if (!btsnd_hcic_ble_create_ll_conn (scan_int,/* UINT16 scan_int */
scan_win, /* UINT16 scan_win */
FALSE, /* UINT8 white_list */
init_addr_type, /* UINT8 addr_type_peer */
init_addr, /* BD_ADDR bda_peer */
own_addr_type, /* UINT8 addr_type_own */
(UINT16) ((p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
p_dev_rec->conn_params.min_conn_int : BTM_BLE_CONN_INT_MIN_DEF), /* UINT16 conn_int_min */
(UINT16) ((p_dev_rec->conn_params.max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
p_dev_rec->conn_params.max_conn_int : BTM_BLE_CONN_INT_MAX_DEF), /* UINT16 conn_int_max */
(UINT16) ((p_dev_rec->conn_params.slave_latency != BTM_BLE_CONN_PARAM_UNDEF) ?
p_dev_rec->conn_params.slave_latency : BTM_BLE_CONN_SLAVE_LATENCY_DEF), /* UINT16 conn_latency */
(UINT16) ((p_dev_rec->conn_params.supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) ?
p_dev_rec->conn_params.supervision_tout : BTM_BLE_CONN_TIMEOUT_DEF), /* conn_timeout */
0, /* UINT16 min_len */
0)) /* UINT16 max_len */
{
l2cu_release_lcb (p_lcb);
L2CAP_TRACE_ERROR("initate direct connection fail, no resources");
return (FALSE);
}
else
{
p_lcb->link_state = LST_CONNECTING;
l2cb.is_ble_connecting = TRUE;
memcpy (l2cb.ble_connecting_bda, p_lcb->remote_bd_addr, BD_ADDR_LEN);
btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, L2CAP_BLE_LINK_CONNECT_TOUT);
btm_ble_set_conn_st (BLE_DIR_CONN);
return (TRUE);
}
}
