/******************************************************************************
*
* Copyright (C) 2004-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains the pan action functions for the state machine.
*
******************************************************************************/
#include "bt_target.h"
#if defined(PAN_INCLUDED) && (PAN_INCLUDED == TRUE)
#include "bta_api.h"
#include "bta_sys.h"
#include "bd.h"
#include "gki.h"
#include "pan_api.h"
#include "bta_pan_api.h"
#include "bta_pan_int.h"
#include "bta_pan_co.h"
#include <string.h>
/* RX and TX data flow mask */
#define BTA_PAN_RX_MASK 0x0F
#define BTA_PAN_TX_MASK 0xF0
/*******************************************************************************
**
** Function bta_pan_conn_state_cback
**
** Description Connection state callback from Pan profile
**
**
** Returns void
**
*******************************************************************************/
static void bta_pan_conn_state_cback(UINT16 handle, BD_ADDR bd_addr, tPAN_RESULT state,
BOOLEAN is_role_change, UINT8 src_role, UINT8 dst_role)
{
tBTA_PAN_CONN * p_buf;
tBTA_PAN_SCB *p_scb;
if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
{
if((state == PAN_SUCCESS) && !is_role_change)
{
p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT;
if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
{
/* allocate an scb */
p_scb = bta_pan_scb_alloc();
}
/* we have exceeded maximum number of connections */
if(!p_scb)
{
PAN_Disconnect (handle);
return;
}
p_scb->handle = handle;
p_scb->local_role = src_role;
p_scb->peer_role = dst_role;
p_scb->pan_flow_enable = TRUE;
bdcpy(p_scb->bd_addr, bd_addr);
GKI_init_q(&p_scb->data_queue);
if(src_role == PAN_ROLE_CLIENT)
p_scb->app_id = bta_pan_cb.app_id[0];
else if (src_role == PAN_ROLE_GN_SERVER)
p_scb->app_id = bta_pan_cb.app_id[1];
else if (src_role == PAN_ROLE_NAP_SERVER)
p_scb->app_id = bta_pan_cb.app_id[2];
}
else if((state != PAN_SUCCESS) && !is_role_change)
{
p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
}
else
{
return;
}
p_buf->result = state;
p_buf->hdr.layer_specific = handle;
bta_sys_sendmsg(p_buf);
}
}
/*******************************************************************************
**
** Function bta_pan_data_flow_cb
**
** Description Data flow status callback from PAN
**
**
** Returns void
**
*******************************************************************************/
static void bta_pan_data_flow_cb(UINT16 handle, tPAN_RESULT result)
{
BT_HDR *p_buf;
tBTA_PAN_SCB *p_scb;
if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
return;
if(result == PAN_TX_FLOW_ON)
{
if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
{
p_buf->layer_specific = handle;
p_buf->event = BTA_PAN_BNEP_FLOW_ENABLE_EVT;
bta_sys_sendmsg(p_buf);
}
bta_pan_co_rx_flow(handle, p_scb->app_id, TRUE);
}
else if(result == PAN_TX_FLOW_OFF)
{
p_scb->pan_flow_enable = FALSE;
bta_pan_co_rx_flow(handle, p_scb->app_id, FALSE);
}
}
/*******************************************************************************
**
** Function bta_pan_data_buf_ind_cback
**
** Description data indication callback from pan profile
**
**
** Returns void
**
*******************************************************************************/
static void bta_pan_data_buf_ind_cback(UINT16 handle, BD_ADDR src, BD_ADDR dst, UINT16 protocol, BT_HDR *p_buf,
BOOLEAN ext, BOOLEAN forward)
{
tBTA_PAN_SCB *p_scb;
BT_HDR * p_event;
BT_HDR *p_new_buf;
if ( sizeof(tBTA_PAN_DATA_PARAMS) > p_buf->offset )
{
/* offset smaller than data structure in front of actual data */
p_new_buf = (BT_HDR *)GKI_getpoolbuf( PAN_POOL_ID );
if(!p_new_buf)
{
APPL_TRACE_WARNING0("Cannot get a PAN GKI buffer");
GKI_freebuf( p_buf );
return;
}
else
{
memcpy( (UINT8 *)(p_new_buf+1)+sizeof(tBTA_PAN_DATA_PARAMS), (UINT8 *)(p_buf+1)+p_buf->offset, p_buf->len );
p_new_buf->len = p_buf->len;
p_new_buf->offset = sizeof(tBTA_PAN_DATA_PARAMS);
GKI_freebuf( p_buf );
}
}
else
{
p_new_buf = p_buf;
}
/* copy params into the space before the data */
bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->src, src);
bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->dst, dst);
((tBTA_PAN_DATA_PARAMS *)p_new_buf)->protocol = protocol;
((tBTA_PAN_DATA_PARAMS *)p_new_buf)->ext = ext;
((tBTA_PAN_DATA_PARAMS *)p_new_buf)->forward = forward;
if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
{
GKI_freebuf( p_new_buf );
return;
}
GKI_enqueue(&p_scb->data_queue, p_new_buf);
if ((p_event = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
{
p_event->layer_specific = handle;
p_event->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
bta_sys_sendmsg(p_event);
}
}
/*******************************************************************************
**
** Function bta_pan_pfilt_ind_cback
**
** Description
**
**
** Returns void
**
*******************************************************************************/
static void bta_pan_pfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
UINT16 num_filters, UINT8 *p_filters)
{
bta_pan_co_pfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
num_filters, p_filters);
}
/*******************************************************************************
**
** Function bta_pan_mfilt_ind_cback
**
** Description
**
**
** Returns void
**
*******************************************************************************/
static void bta_pan_mfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
UINT16 num_mfilters, UINT8 *p_mfilters)
{
bta_pan_co_mfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
num_mfilters, p_mfilters);
}
/*******************************************************************************
**
** Function bta_pan_enable
**
** Description
**
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_enable(tBTA_PAN_DATA *p_data)
{
tPAN_REGISTER reg_data;
UINT16 initial_discoverability;
UINT16 initial_connectability;
UINT16 d_window;
UINT16 d_interval;
UINT16 c_window;
UINT16 c_interval;
bta_pan_cb.p_cback = p_data->api_enable.p_cback;
reg_data.pan_conn_state_cb = bta_pan_conn_state_cback;
reg_data.pan_bridge_req_cb = NULL;
reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
reg_data.pan_data_ind_cb = NULL;
reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
/* read connectability and discoverability settings.
Pan profile changes the settings. We have to change it back to
be consistent with other bta subsystems */
initial_connectability = BTM_ReadConnectability(&c_window, &c_interval);
initial_discoverability = BTM_ReadDiscoverability(&d_window, &d_interval);
PAN_Register (®_data);
/* set it back to original value */
BTM_SetDiscoverability(initial_discoverability, d_window, d_interval);
BTM_SetConnectability(initial_connectability, c_window, c_interval);
bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
}
/*******************************************************************************
**
** Function bta_pan_set_role
**
** Description
**
** Returns void
**
*******************************************************************************/
void bta_pan_set_role(tBTA_PAN_DATA *p_data)
{
tPAN_RESULT status;
tBTA_PAN_SET_ROLE set_role;
UINT8 sec[3];
bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
bta_pan_cb.app_id[1] = p_data->api_set_role.gn_app_id;
bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
sec[0] = p_data->api_set_role.user_sec_mask;
sec[1] = p_data->api_set_role.gn_sec_mask;
sec[2] = p_data->api_set_role.nap_sec_mask;
/* set security correctly in api and here */
status = PAN_SetRole(p_data->api_set_role.role, sec,
p_data->api_set_role.user_name,
p_data->api_set_role.gn_name,
p_data->api_set_role.nap_name);
set_role.role = p_data->api_set_role.role;
if(status == PAN_SUCCESS)
{
if(p_data->api_set_role.role & PAN_ROLE_NAP_SERVER )
bta_sys_add_uuid(UUID_SERVCLASS_NAP);
else
bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
if(p_data->api_set_role.role & PAN_ROLE_GN_SERVER )
bta_sys_add_uuid(UUID_SERVCLASS_GN);
else
bta_sys_remove_uuid(UUID_SERVCLASS_GN);
if(p_data->api_set_role.role & PAN_ROLE_CLIENT )
bta_sys_add_uuid(UUID_SERVCLASS_PANU);
else
bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
set_role.status = BTA_PAN_SUCCESS;
}
/* if status is not success clear everything */
else
{
PAN_SetRole(0, 0, NULL, NULL, NULL);
bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
bta_sys_remove_uuid(UUID_SERVCLASS_GN);
bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
set_role.status = BTA_PAN_FAIL;
}
bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, (tBTA_PAN *)&set_role);
}
/*******************************************************************************
**
** Function bta_pan_disable
**
** Description
**
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_disable(void)
{
BT_HDR *p_buf;
tBTA_PAN_SCB *p_scb = &bta_pan_cb.scb[0];
UINT8 i;
/* close all connections */
PAN_SetRole (0, NULL, NULL, NULL, NULL);
#if ( BTM_EIR_SERVER_INCLUDED == TRUE )&&(BTA_EIR_CANNED_UUID_LIST != TRUE)
bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
bta_sys_remove_uuid(UUID_SERVCLASS_GN);
bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
#endif
/* free all queued up data buffers */
for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++)
{
if (p_scb->in_use)
{
while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
GKI_freebuf(p_buf);
bta_pan_co_close(p_scb->handle, p_scb->app_id);
}
}
PAN_Deregister();
}
/*******************************************************************************
**
** Function bta_pan_open
**
** Description
**
** Returns void
**
*******************************************************************************/
void bta_pan_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
tPAN_RESULT status;
tBTA_PAN_OPEN data;
tBTA_PAN_OPENING opening;
status = PAN_Connect (p_data->api_open.bd_addr, p_data->api_open.local_role, p_data->api_open.peer_role,
&p_scb->handle);
if(status == PAN_SUCCESS)
{
bdcpy(p_scb->bd_addr, p_data->api_open.bd_addr);
p_scb->local_role = p_data->api_open.local_role;
p_scb->peer_role = p_data->api_open.peer_role;
bdcpy(opening.bd_addr, p_data->api_open.bd_addr);
opening.handle = p_scb->handle;
bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, (tBTA_PAN *)&opening);
}
else
{
bta_pan_scb_dealloc(p_scb);
bdcpy(data.bd_addr, p_data->api_open.bd_addr);
data.status = BTA_PAN_FAIL;
bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
}
}
/*******************************************************************************
**
** Function bta_pan_close
**
** Description
**
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_api_close (tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
tBTA_PAN_CONN * p_buf;
PAN_Disconnect (p_scb->handle);
/* send an event to BTA so that application will get the connection
close event */
if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
{
p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
p_buf->hdr.layer_specific = p_scb->handle;
bta_sys_sendmsg(p_buf);
}
}
/*******************************************************************************
**
** Function bta_pan_conn_open
**
** Description process connection open event
**
** Returns void
**
*******************************************************************************/
void bta_pan_conn_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
tBTA_PAN_OPEN data;
bdcpy(data.bd_addr, p_scb->bd_addr);
data.handle = p_scb->handle;
data.local_role = p_scb->local_role;
data.peer_role = p_scb->peer_role;
if(p_data->conn.result == PAN_SUCCESS)
{
data.status = BTA_PAN_SUCCESS;
bta_pan_co_open(p_scb->handle, p_scb->app_id, p_scb->local_role, p_scb->peer_role, p_scb->bd_addr);
}
else
{
bta_pan_scb_dealloc(p_scb);
data.status = BTA_PAN_FAIL;
}
p_scb->pan_flow_enable = TRUE;
p_scb->app_flow_enable = TRUE;
bta_sys_conn_open( BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
}
/*******************************************************************************
**
** Function bta_pan_conn_close
**
** Description process connection close event
**
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_conn_close(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
tBTA_PAN_CLOSE data;
BT_HDR *p_buf;
data.handle = p_data->hdr.layer_specific;
bta_sys_conn_close( BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
/* free all queued up data buffers */
while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
GKI_freebuf(p_buf);
GKI_init_q(&p_scb->data_queue);
bta_pan_co_close(p_scb->handle, p_scb->app_id);
bta_pan_scb_dealloc(p_scb);
bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, (tBTA_PAN *)&data);
}
/*******************************************************************************
**
** Function bta_pan_rx_path
**
** Description Handle data on the RX path (data sent from the phone to
** BTA).
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_rx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
/* if data path configured for rx pull */
if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL)
{
/* if we can accept data */
if (p_scb->pan_flow_enable == TRUE)
{
/* call application callout function for rx path */
bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
}
}
/* else data path configured for rx push */
else
{
}
}
/*******************************************************************************
**
** Function bta_pan_tx_path
**
** Description Handle the TX data path (data sent from BTA to the phone).
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_tx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
BT_HDR * p_buf;
/* if data path configured for tx pull */
if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PULL)
{
/* call application callout function for tx path */
bta_pan_co_tx_path(p_scb->handle, p_scb->app_id);
/* free data that exceeds queue level */
while(p_scb->data_queue.count > bta_pan_cb.q_level)
GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
}
/* if configured for zero copy push */
else if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PUSH_BUF)
{
/* if app can accept data */
if (p_scb->app_flow_enable == TRUE)
{
/* read data from the queue */
if ((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
{
/* send data to application */
bta_pan_co_tx_writebuf(p_scb->handle,
p_scb->app_id,
((tBTA_PAN_DATA_PARAMS *)p_buf)->src,
((tBTA_PAN_DATA_PARAMS *)p_buf)->dst,
((tBTA_PAN_DATA_PARAMS *)p_buf)->protocol,
p_buf,
((tBTA_PAN_DATA_PARAMS *)p_buf)->ext,
((tBTA_PAN_DATA_PARAMS *)p_buf)->forward);
}
/* free data that exceeds queue level */
while(p_scb->data_queue.count > bta_pan_cb.q_level)
GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
/* if there is more data to be passed to
upper layer */
if(p_scb->data_queue.count)
{
if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
{
p_buf->layer_specific = p_scb->handle;
p_buf->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
bta_sys_sendmsg(p_buf);
}
}
}
}
}
/*******************************************************************************
**
** Function bta_pan_tx_flow
**
** Description Set the application flow control state.
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_tx_flow(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
}
/*******************************************************************************
**
** Function bta_pan_write_buf
**
** Description Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_write_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF)
{
PAN_WriteBuf (p_scb->handle,
((tBTA_PAN_DATA_PARAMS *)p_data)->dst,
((tBTA_PAN_DATA_PARAMS *)p_data)->src,
((tBTA_PAN_DATA_PARAMS *)p_data)->protocol,
(BT_HDR *)p_data,
((tBTA_PAN_DATA_PARAMS *)p_data)->ext);
}
}
/*******************************************************************************
**
** Function bta_pan_free_buf
**
** Description Frees the data buffer during closing state
**
**
** Returns void
**
*******************************************************************************/
void bta_pan_free_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
{
GKI_freebuf(p_data);
}
#endif /* PAN_INCLUDED */