/*******************************************************************************
**
** Function port_rfc_closed
**
** Description This function when RFCOMM side of port is closed
**
*******************************************************************************/
void port_rfc_closed (tPORT *p_port, UINT8 res)
{
UINT8 old_signals;
UINT32 events = 0;
tRFC_MCB *p_mcb = p_port->rfc.p_mcb;
if ((p_port->state == PORT_STATE_OPENING) && (p_port->is_server)) {
/* The servr side has not been informed that connection is up, ignore */
RFCOMM_TRACE_EVENT ("port_rfc_closed in OPENING state ignored");
rfc_port_timer_stop (p_port);
p_port->rfc.state = RFC_STATE_CLOSED;
if (p_mcb) {
p_mcb->port_inx[p_port->dlci] = 0;
/* If there are no more ports opened on this MCB release it */
rfc_check_mcb_active (p_mcb);
p_port->rfc.p_mcb = NULL;
}
/* Need to restore DLCI to listening state
* if the server was on the initiating RFC
*/
p_port->dlci &= 0xfe;
return;
}
if ((p_port->state != PORT_STATE_CLOSING) && (p_port->state != PORT_STATE_CLOSED)) {
p_port->line_status |= LINE_STATUS_FAILED;
old_signals = p_port->peer_ctrl.modem_signal;
p_port->peer_ctrl.modem_signal &= ~(PORT_DTRDSR_ON | PORT_CTSRTS_ON | PORT_DCD_ON);
events |= port_get_signal_changes (p_port, old_signals, p_port->peer_ctrl.modem_signal);
if (p_port->ev_mask & PORT_EV_CONNECT_ERR) {
events |= PORT_EV_CONNECT_ERR;
}
}
RFCOMM_TRACE_EVENT ("port_rfc_closed state:%d sending events:%x", p_port->state, events);
if ((p_port->p_callback != NULL) && events) {
p_port->p_callback (events, p_port->inx);
}
if (p_port->p_mgmt_callback) {
p_port->p_mgmt_callback (res, p_port->inx);
}
p_port->rfc.state = RFC_STATE_CLOSED;
RFCOMM_TRACE_WARNING ("%s RFCOMM connection in state %d closed: %s (res: %d)",
__func__, p_port->state, PORT_GetResultString(res), res);
port_release_port (p_port);
}
/*******************************************************************************
**
** Function PORT_StartCnf
**
** Description This function is called from the RFCOMM layer when
** establishing of the multiplexer channel is completed.
** Continue establishing of the connection for all ports that
** are in the OPENING state
**
*******************************************************************************/
void PORT_StartCnf (tRFC_MCB *p_mcb, UINT16 result)
{
tPORT *p_port;
int i;
BOOLEAN no_ports_up = TRUE;
RFCOMM_TRACE_EVENT ("PORT_StartCnf result:%d", result);
p_port = &rfc_cb.port.port[0];
for (i = 0; i < MAX_RFC_PORTS; i++, p_port++)
{
if (p_port->rfc.p_mcb == p_mcb)
{
no_ports_up = FALSE;
if (result == RFCOMM_SUCCESS)
RFCOMM_ParNegReq (p_mcb, p_port->dlci, p_port->mtu);
else
{
RFCOMM_TRACE_WARNING ("PORT_StartCnf failed result:%d", result);
/* Warning: result is also set to 4 when l2cap connection
fails due to l2cap connect cnf (no_resources) */
if( result == HCI_ERR_PAGE_TIMEOUT )
p_port->error = PORT_PAGE_TIMEOUT;
else
p_port->error = PORT_START_FAILED;
rfc_release_multiplexer_channel (p_mcb);
p_port->rfc.p_mcb = NULL;
/* Send event to the application */
if (p_port->p_callback && (p_port->ev_mask & PORT_EV_CONNECT_ERR))
(p_port->p_callback)(PORT_EV_CONNECT_ERR, p_port->inx);
if (p_port->p_mgmt_callback)
p_port->p_mgmt_callback (PORT_START_FAILED, p_port->inx);
port_release_port (p_port);
}
}
}
/* There can be a situation when after starting connection, user closes the */
/* port, we can catch it here to close multiplexor channel */
if (no_ports_up)
{
rfc_check_mcb_active (p_mcb);
}
}
/*******************************************************************************
**
** Function rfc_port_closed
**
** Description The function is called when port is released based on the
** event received from the lower layer, typically L2CAP
** connection down, DISC, or DM frame.
**
** Returns void
**
*******************************************************************************/
void rfc_port_closed (tPORT *p_port)
{
tRFC_MCB *p_mcb = p_port->rfc.p_mcb;
RFCOMM_TRACE_DEBUG ("rfc_port_closed");
rfc_port_timer_stop (p_port);
p_port->rfc.state = RFC_STATE_CLOSED;
/* If multiplexer channel was up mark it as down */
if (p_mcb) {
p_mcb->port_inx[p_port->dlci] = 0;
/* If there are no more ports opened on this MCB release it */
rfc_check_mcb_active (p_mcb);
}
/* Notify port that RFC connection is gone */
port_rfc_closed (p_port, PORT_CLOSED);
}
/*******************************************************************************
**
** Function PORT_ParNegInd
**
** Description This function is called from the RFCOMM layer to change
** DLCI parameters (currently only MTU is negotiated).
** If can not find the port do not accept the request.
** Otherwise save the MTU size supported by the peer.
**
*******************************************************************************/
void PORT_ParNegInd (tRFC_MCB *p_mcb, UINT8 dlci, UINT16 mtu, UINT8 cl, UINT8 k)
{
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
UINT8 our_cl;
UINT8 our_k;
RFCOMM_TRACE_EVENT ("PORT_ParNegInd dlci:%d mtu:%d", dlci, mtu);
if (!p_port) {
/* This can be a first request for this port */
p_port = port_find_dlci_port (dlci);
if (!p_port) {
/* If the port cannot be opened, send a DM. Per Errata 1205 */
rfc_send_dm(p_mcb, dlci, FALSE);
/* check if this is the last port open, some headsets have
problem, they don't disconnect if we send DM */
rfc_check_mcb_active( p_mcb );
RFCOMM_TRACE_EVENT( "PORT_ParNegInd: port not found" );
return;
}
p_mcb->port_inx[dlci] = p_port->inx;
}
memcpy (p_port->bd_addr, p_mcb->bd_addr, BD_ADDR_LEN);
/* Connection is up and we know local and remote features, select MTU */
port_select_mtu (p_port);
p_port->rfc.p_mcb = p_mcb;
p_port->mtu = (p_port->mtu < mtu) ? p_port->mtu : mtu;
p_port->peer_mtu = p_port->mtu;
/* Negotiate the flow control mechanism. If flow control mechanism for */
/* mux has not been set yet, set it now. If either we or peer wants TS 07.10, */
/* use that. Otherwise both must want credit based, so use that. If flow is */
/* already defined for this mux, we respond with that value. */
if (p_mcb->flow == PORT_FC_UNDEFINED) {
if ((PORT_FC_DEFAULT == PORT_FC_TS710) || (cl == RFCOMM_PN_CONV_LAYER_TYPE_1)) {
p_mcb->flow = PORT_FC_TS710;
} else {
p_mcb->flow = PORT_FC_CREDIT;
}
}
/* Regardless of our flow control mechanism, if the PN cl is zero, we must */
/* respond with zero. "A responding implementation must set this field to 14 */
/* if (and only if) the PN request was 15." This could happen if a PN is sent */
/* after the DLCI is already established-- the PN in that case must have cl = 0. */
/* See RFCOMM spec 5.5.3 */
if (cl == RFCOMM_PN_CONV_LAYER_TYPE_1) {
our_cl = RFCOMM_PN_CONV_LAYER_TYPE_1;
our_k = 0;
} else if (p_mcb->flow == PORT_FC_CREDIT) {
/* get credits */
port_get_credits (p_port, k);
/* Set convergence layer and number of credits (k) */
our_cl = RFCOMM_PN_CONV_LAYER_CBFC_R;
our_k = (p_port->credit_rx_max < RFCOMM_K_MAX) ? p_port->credit_rx_max : RFCOMM_K_MAX;
p_port->credit_rx = our_k;
} else {
/* must not be using credit based flow control; use TS 7.10 */
our_cl = RFCOMM_PN_CONV_LAYER_TYPE_1;
our_k = 0;
}
RFCOMM_ParNegRsp (p_mcb, dlci, p_port->mtu, our_cl, our_k);
}
/*******************************************************************************
**
** Function port_release_port
**
** Description Release port infor control block.
**
** Returns Pointer to the PORT or NULL if not found
**
*******************************************************************************/
void port_release_port (tPORT *p_port)
{
BT_HDR *p_buf;
UINT32 mask;
tPORT_CALLBACK *p_port_cb;
tPORT_STATE user_port_pars;
PORT_SCHEDULE_LOCK;
RFCOMM_TRACE_DEBUG("port_release_port, p_port:%p", p_port);
while ((p_buf = (BT_HDR *)GKI_dequeue (&p_port->rx.queue)) != NULL)
GKI_freebuf (p_buf);
p_port->rx.queue_size = 0;
while ((p_buf = (BT_HDR *)GKI_dequeue (&p_port->tx.queue)) != NULL)
GKI_freebuf (p_buf);
p_port->tx.queue_size = 0;
PORT_SCHEDULE_UNLOCK;
p_port->state = PORT_STATE_CLOSED;
if (p_port->rfc.state == RFC_STATE_CLOSED)
{
RFCOMM_TRACE_DEBUG ("rfc_port_closed DONE");
if (p_port->rfc.p_mcb)
{
p_port->rfc.p_mcb->port_inx[p_port->dlci] = 0;
/* If there are no more ports opened on this MCB release it */
rfc_check_mcb_active (p_port->rfc.p_mcb);
}
rfc_port_timer_stop (p_port);
RFCOMM_TRACE_DEBUG ("port_release_port:p_port->keep_port_handle:%d", p_port->keep_port_handle);
if( p_port->keep_port_handle )
{
RFCOMM_TRACE_DEBUG ("port_release_port:Initialize handle:%d", p_port->inx);
/* save event mask and callback */
mask = p_port->ev_mask;
p_port_cb = p_port->p_callback;
user_port_pars = p_port->user_port_pars;
port_set_defaults(p_port);
/* restore */
p_port->ev_mask = mask;
p_port->p_callback = p_port_cb;
p_port->user_port_pars = user_port_pars;
p_port->mtu = p_port->keep_mtu;
p_port->state = PORT_STATE_OPENING;
p_port->rfc.p_mcb = NULL;
if(p_port->is_server)
p_port->dlci &= 0xfe;
p_port->local_ctrl.modem_signal = p_port->default_signal_state;
memcpy (p_port->bd_addr, BT_BD_ANY, BD_ADDR_LEN);
}
else
{
RFCOMM_TRACE_DEBUG ("port_release_port:Clean-up handle:%d", p_port->inx);
memset (p_port, 0, sizeof (tPORT));
}
}
}
