static void transmit_command(
BT_HDR *command,
command_complete_cb complete_callback,
command_status_cb status_callback,
void *context)
{
uint8_t *stream;
waiting_command_t *wait_entry = osi_calloc(sizeof(waiting_command_t));
if (!wait_entry) {
LOG_ERROR("%s couldn't allocate space for wait entry.", __func__);
return;
}
stream = command->data + command->offset;
STREAM_TO_UINT16(wait_entry->opcode, stream);
wait_entry->complete_callback = complete_callback;
wait_entry->status_callback = status_callback;
wait_entry->command = command;
wait_entry->context = context;
// Store the command message type in the event field
// in case the upper layer didn't already
command->event = MSG_STACK_TO_HC_HCI_CMD;
LOG_DEBUG("HCI Enqueue Comamnd opcode=0x%x\n", wait_entry->opcode);
BTTRC_DUMP_BUFFER(NULL, command->data + command->offset, command->len);
fixed_queue_enqueue(hci_host_env.command_queue, wait_entry);
hci_host_task_post();
}
static void inbound_data_waiting(void *context) {
eager_reader_t *reader = (eager_reader_t *)context;
data_buffer_t *buffer = (data_buffer_t *)reader->allocator->alloc(reader->buffer_size + sizeof(data_buffer_t));
if (!buffer) {
LOG_ERROR(LOG_TAG, "%s couldn't aquire memory for inbound data buffer.", __func__);
return;
}
buffer->length = 0;
buffer->offset = 0;
int bytes_read = read(reader->inbound_fd, buffer->data, reader->buffer_size);
if (bytes_read > 0) {
// Save the data for later
buffer->length = bytes_read;
fixed_queue_enqueue(reader->buffers, buffer);
// Tell consumers data is available by incrementing
// the semaphore by the number of bytes we just read
eventfd_write(reader->bytes_available_fd, bytes_read);
} else {
if (bytes_read == 0)
LOG_WARN(LOG_TAG, "%s fd said bytes existed, but none were found.", __func__);
else
LOG_WARN(LOG_TAG, "%s unable to read from file descriptor: %s", __func__, strerror(errno));
reader->allocator->free(buffer);
}
}
int if_output(cbuf *b, ifnet *i)
{
bool release_sem = false;
bool enqueue_failed = false;
//printf("if out");
// stick the buffer on a transmit queue
mutex_lock(&i->tx_queue_lock);
if(fixed_queue_enqueue(&i->tx_queue, b) < 0)
enqueue_failed = true;
if(i->tx_queue.count == 1)
release_sem = true;
mutex_unlock(&i->tx_queue_lock);
if(enqueue_failed) {
cbuf_free_chain(b);
return ERR_NO_MEMORY;
}
if(release_sem)
sem_release(i->tx_queue_sem);
//printf("if %x out ok\n", i);
return NO_ERROR;
}
/*******************************************************************************
**
** Function btc_a2dp_sink_enque_buf
**
** Description This function is called by the av_co to fill A2DP Sink Queue
**
**
** Returns size of the queue
*******************************************************************************/
UINT8 btc_a2dp_sink_enque_buf(BT_HDR *p_pkt)
{
tBT_SBC_HDR *p_msg;
if (btc_aa_snk_cb.rx_flush == TRUE) { /* Flush enabled, do not enque*/
return fixed_queue_length(btc_aa_snk_cb.RxSbcQ);
}
if (fixed_queue_length(btc_aa_snk_cb.RxSbcQ) >= MAX_OUTPUT_A2DP_SNK_FRAME_QUEUE_SZ) {
APPL_TRACE_WARNING("Pkt dropped\n");
return fixed_queue_length(btc_aa_snk_cb.RxSbcQ);
}
APPL_TRACE_DEBUG("btc_a2dp_sink_enque_buf + ");
/* allocate and Queue this buffer */
if ((p_msg = (tBT_SBC_HDR *) osi_malloc(sizeof(tBT_SBC_HDR) +
p_pkt->offset + p_pkt->len)) != NULL) {
memcpy(p_msg, p_pkt, (sizeof(BT_HDR) + p_pkt->offset + p_pkt->len));
p_msg->num_frames_to_be_processed = (*((UINT8 *)(p_msg + 1) + p_msg->offset)) & 0x0f;
APPL_TRACE_VERBOSE("btc_a2dp_sink_enque_buf %d + \n", p_msg->num_frames_to_be_processed);
fixed_queue_enqueue(btc_aa_snk_cb.RxSbcQ, p_msg);
btc_a2dp_sink_data_post(BTC_A2DP_SINK_DATA_EVT);
} else {
/* let caller deal with a failed allocation */
APPL_TRACE_WARNING("btc_a2dp_sink_enque_buf No Buffer left - ");
}
return fixed_queue_length(btc_aa_snk_cb.RxSbcQ);
}
void btu_oneshot_alarm_cb(void *data) {
assert(data != NULL);
TIMER_LIST_ENT *p_tle = (TIMER_LIST_ENT *)data;
btu_stop_timer_oneshot(p_tle);
fixed_queue_enqueue(btu_oneshot_alarm_queue, p_tle);
}
static void transmit_downward(data_dispatcher_type_t type, void *data) {
if (type == MSG_STACK_TO_HC_HCI_CMD) {
// TODO(zachoverflow): eliminate this call
transmit_command((BT_HDR *)data, NULL, NULL, NULL);
LOG_WARN(LOG_TAG, "%s legacy transmit of command. Use transmit_command instead.", __func__);
} else {
fixed_queue_enqueue(packet_queue, data);
}
}
static void transmit_downward(uint16_t type, void *data)
{
if (type == MSG_STACK_TO_HC_HCI_CMD) {
transmit_command((BT_HDR *)data, NULL, NULL, NULL);
LOG_WARN("%s legacy transmit of command. Use transmit_command instead.\n", __func__);
} else {
fixed_queue_enqueue(hci_host_env.packet_queue, data);
}
//ke_event_set(KE_EVENT_HCI_HOST_THREAD);
hci_host_task_post();
}
static void transmit_downward(uint16_t type, void *data)
{
if (type == MSG_STACK_TO_HC_HCI_CMD) {
transmit_command((BT_HDR *)data, NULL, NULL, NULL);
HCI_TRACE_WARNING("%s legacy transmit of command. Use transmit_command instead.\n", __func__);
} else {
fixed_queue_enqueue(hci_host_env.packet_queue, data);
}
hci_host_task_post(TASK_POST_BLOCKING);
}
// Callback for the fragmenter to dispatch up a completely reassembled packet
static void dispatch_reassembled(BT_HDR *packet) {
// Events should already have been dispatched before this point
assert((packet->event & MSG_EVT_MASK) != MSG_HC_TO_STACK_HCI_EVT);
assert(upwards_data_queue != NULL);
if (upwards_data_queue) {
fixed_queue_enqueue(upwards_data_queue, packet);
} else {
LOG_ERROR(LOG_TAG, "%s had no queue to place upwards data packet in. Dropping it on the floor.", __func__);
buffer_allocator->free(packet);
}
}
// Callback for the fragmenter to dispatch up a completely reassembled packet
static void dispatch_reassembled(BT_HDR *packet)
{
// Events should already have been dispatched before this point
if (hci_host_env.upwards_data_queue) {
fixed_queue_enqueue(hci_host_env.upwards_data_queue, packet);
btu_task_post(SIG_BTU_WORK);
//Tell Up-layer received packet.
} else {
LOG_DEBUG("%s had no queue to place upwards data packet in. Dropping it on the floor.", __func__);
buffer_allocator->free(packet);
}
}
bool data_dispatcher_dispatch(data_dispatcher_t *dispatcher, data_dispatcher_type_t type, void *data) {
assert(dispatcher != NULL);
assert(data != NULL);
fixed_queue_t *queue = hash_map_get(dispatcher->dispatch_table, (void *)type);
if (!queue)
queue = dispatcher->default_queue;
if (queue)
fixed_queue_enqueue(queue, data);
else
LOG_WARN(LOG_TAG, "%s has no handler for type (%zd) in data dispatcher named: %s", __func__, type, dispatcher->name);
return queue != NULL;
}
static future_t *transmit_command_futured(BT_HDR *command) {
waiting_command_t *wait_entry = osi_calloc(sizeof(waiting_command_t));
assert(wait_entry != NULL);
future_t *future = future_new();
uint8_t *stream = command->data + command->offset;
STREAM_TO_UINT16(wait_entry->opcode, stream);
wait_entry->complete_future = future;
wait_entry->command = command;
// Store the command message type in the event field
// in case the upper layer didn't already
command->event = MSG_STACK_TO_HC_HCI_CMD;
fixed_queue_enqueue(command_queue, wait_entry);
return future;
}
bool thread_post(thread_t *thread, thread_fn func, void *context) {
assert(thread != NULL);
assert(func != NULL);
// TODO(sharvil): if the current thread == |thread| and we've run out
// of queue space, we should abort this operation, otherwise we'll
// deadlock.
// Queue item is freed either when the queue itself is destroyed
// or when the item is removed from the queue for dispatch.
work_item_t *item = (work_item_t *)osi_malloc(sizeof(work_item_t));
if (!item) {
LOG_ERROR("%s unable to allocate memory: %s", __func__, strerror(errno));
return false;
}
item->func = func;
item->context = context;
fixed_queue_enqueue(thread->work_queue, item);
return true;
}
static void transmit_command(
BT_HDR *command,
command_complete_cb complete_callback,
command_status_cb status_callback,
void *context) {
waiting_command_t *wait_entry = osi_calloc(sizeof(waiting_command_t));
if (!wait_entry) {
LOG_ERROR(LOG_TAG, "%s couldn't allocate space for wait entry.", __func__);
return;
}
uint8_t *stream = command->data + command->offset;
STREAM_TO_UINT16(wait_entry->opcode, stream);
wait_entry->complete_callback = complete_callback;
wait_entry->status_callback = status_callback;
wait_entry->command = command;
wait_entry->context = context;
// Store the command message type in the event field
// in case the upper layer didn't already
command->event = MSG_STACK_TO_HC_HCI_CMD;
fixed_queue_enqueue(command_queue, wait_entry);
}
/*******************************************************************************
**
** Function rfc_check_send_cmd
**
** Description This function is called to send an RFCOMM command message
** or to handle the RFCOMM command message queue.
**
** Returns void
**
*******************************************************************************/
void rfc_check_send_cmd(tRFC_MCB *p_mcb, BT_HDR *p_buf)
{
BT_HDR *p;
/* if passed a buffer queue it */
if (p_buf != NULL) {
if (p_mcb->cmd_q == NULL) {
RFCOMM_TRACE_ERROR("%s: empty queue: p_mcb = %p p_mcb->lcid = %u cached p_mcb = %p",
__func__, p_mcb, p_mcb->lcid,
rfc_find_lcid_mcb(p_mcb->lcid));
}
fixed_queue_enqueue(p_mcb->cmd_q, p_buf);
}
/* handle queue if L2CAP not congested */
while (p_mcb->l2cap_congested == FALSE) {
if ((p = (BT_HDR *)fixed_queue_try_dequeue(p_mcb->cmd_q)) == NULL) {
break;
}
L2CA_DataWrite (p_mcb->lcid, p);
}
}
static void btu_l2cap_alarm_cb(void *data) {
assert(data != NULL);
TIMER_LIST_ENT *p_tle = (TIMER_LIST_ENT *)data;
fixed_queue_enqueue(btu_l2cap_alarm_queue, p_tle);
}
/*******************************************************************************
**
** Function l2c_ucd_enqueue_pending_out_sec_q
**
** Description enqueue outgoing UCD packet into security pending queue
** and check congestion
**
** Return None
**
*******************************************************************************/
void l2c_ucd_enqueue_pending_out_sec_q(tL2C_CCB *p_ccb, void *p_data)
{
fixed_queue_enqueue(p_ccb->p_lcb->ucd_out_sec_pending_q, p_data);
l2cu_check_channel_congestion (p_ccb);
}
/*******************************************************************************
**
** Function PORT_DataInd
**
** Description This function is called from the RFCOMM layer when data
** buffer is received from the peer.
**
*******************************************************************************/
void PORT_DataInd (tRFC_MCB *p_mcb, UINT8 dlci, BT_HDR *p_buf)
{
tPORT *p_port = port_find_mcb_dlci_port (p_mcb, dlci);
UINT8 rx_char1;
UINT32 events = 0;
UINT8 *p;
int i;
RFCOMM_TRACE_EVENT("PORT_DataInd with data length %d, p_mcb:%p,p_port:%p,dlci:%d",
p_buf->len, p_mcb, p_port, dlci);
if (!p_port) {
osi_free (p_buf);
return;
}
/* If client registered callout callback with flow control we can just deliver receive data */
if (p_port->p_data_co_callback) {
/* Another packet is delivered to user. Send credits to peer if required */
if (p_port->p_data_co_callback(p_port->inx, (UINT8 *)p_buf, -1, DATA_CO_CALLBACK_TYPE_INCOMING)) {
port_flow_control_peer(p_port, TRUE, 1);
} else {
port_flow_control_peer(p_port, FALSE, 0);
}
//osi_free (p_buf);
return;
} else {
RFCOMM_TRACE_DEBUG("PORT_DataInd, p_port:%p, p_data_co_callback is null", p_port);
}
/* If client registered callback we can just deliver receive data */
if (p_port->p_data_callback) {
/* Another packet is delivered to user. Send credits to peer if required */
port_flow_control_peer(p_port, TRUE, 1);
p_port->p_data_callback (p_port->inx, (UINT8 *)(p_buf + 1) + p_buf->offset, p_buf->len);
osi_free (p_buf);
return;
}
/* Check if rx queue exceeds the limit */
if ((p_port->rx.queue_size + p_buf->len > PORT_RX_CRITICAL_WM)
|| (fixed_queue_length(p_port->rx.queue) + 1 > p_port->rx_buf_critical)) {
RFCOMM_TRACE_EVENT ("PORT_DataInd. Buffer over run. Dropping the buffer");
osi_free (p_buf);
RFCOMM_LineStatusReq (p_mcb, dlci, LINE_STATUS_OVERRUN);
return;
}
/* If user registered to receive notification when a particular byte is */
/* received we mast check all received bytes */
if (((rx_char1 = p_port->user_port_pars.rx_char1) != 0)
&& (p_port->ev_mask & PORT_EV_RXFLAG)) {
for (i = 0, p = (UINT8 *)(p_buf + 1) + p_buf->offset; i < p_buf->len; i++) {
if (*p++ == rx_char1) {
events |= PORT_EV_RXFLAG;
break;
}
}
}
osi_mutex_global_lock();
fixed_queue_enqueue(p_port->rx.queue, p_buf);
p_port->rx.queue_size += p_buf->len;
osi_mutex_global_unlock();
/* perform flow control procedures if necessary */
port_flow_control_peer(p_port, FALSE, 0);
/* If user indicated flow control can not deliver any notifications to him */
if (p_port->rx.user_fc) {
if (events & PORT_EV_RXFLAG) {
p_port->rx_flag_ev_pending = TRUE;
}
return;
}
events |= PORT_EV_RXCHAR;
/* Mask out all events that are not of interest to user */
events &= p_port->ev_mask;
if (p_port->p_callback && events) {
p_port->p_callback (events, p_port->inx);
}
}