static err_t
low_level_output(struct netif *netif, struct pbuf *p)
{
//struct ethernetif *ethernetif = netif->state;
/* Interrupts are disabled through this whole thing to support multi-threading
transmit calls. Also this function might be called from an ISR. */
return PacketSend(p); // 调用网卡发送函数发送一帧数据
}
void I_NetCmd (void)
{
if (doomcom.command == CMD_SEND)
{
PacketSend ();
}
else if (doomcom.command == CMD_GET)
{
PacketGet ();
}
else
I_Error ("Bad net cmd: %i\n",doomcom.command);
}
/**************************************************************************//**
* @brief Request AEM (Advanced Energy Monitoring) voltage from board controller.
*
* @note Assumes that BSP_Init() has been called with @ref BSP_INIT_STK_BCUART
* bitmask.
*
* @return
* The voltage. Returns 0.0 on board controller communication
* error.
*****************************************************************************/
float BSP_VoltageGet(void)
{
STK_Packet pkt;
float voltage;
pkt.type = STK_PACKETTYPE_VOLTAGE_REQ;
pkt.payloadLength = 0;
/* Send Request/Get reply */
PacketSend(&pkt);
PacketReceive(&pkt);
/* Process reply */
if (pkt.type == STK_PACKETTYPE_VOLTAGE_REPLY)
{
memcpy(&voltage, pkt.data, sizeof(float));
return voltage;
}
else
{
return (float) 0.0;
}
}
/**************************************************************************//**
* @brief Request AEM (Advanced Energy Monitoring) current from board controller.
*
* @note Assumes that BSP_Init() has been called with @ref BSP_INIT_STK_BCUART
* bitmask.
*
* @return
* The current expressed in milliamperes. Returns 0.0 on board controller
* communication error.
*****************************************************************************/
float BSP_CurrentGet(void)
{
STK_Packet pkt;
float current;
pkt.type = STK_PACKETTYPE_CURRENT_REQ;
pkt.payloadLength = 0;
/* Send Request/Get reply */
PacketSend(&pkt);
PacketReceive(&pkt);
/* Process reply */
if (pkt.type == STK_PACKETTYPE_CURRENT_REPLY)
{
memcpy(¤t, pkt.data, sizeof(float));
return current;
}
else
{
return (float) 0.0;
}
}
/**
* CmdQUpdateAllSends updates the sending of all packets.
* Packets that need to be transferred are sent. Those that don't, don't.
* The amount of packets sent depends on the baud rate and the last time
* this routine was called.
*
*<!-----------------------------------------------------------------------*/
T_void CmdQUpdateAllSends(T_void)
{
T_byte8 currentCmd;
T_cmdQPacketStruct *p_packet = NULL;
T_cmdQPacketStruct *p_next = NULL;
T_byte8 packetLength;
T_word32 time;
T_sword16 status;
T_word16 bytesused;
T_word32 maxOutput;
E_Boolean onceFlag = FALSE;
E_Boolean sentAny;
DebugRoutine("CmdQUpdateAllSends") ;
/* Get the current time. */
time = TickerGet();
bytesused = 0;
maxOutput = 100;
currentCmd = 0;
if (bytesused < maxOutput) {
do {
sentAny = FALSE;
p_next = 0;
p_packet = G_activeCmdQList[currentCmd].first;
do {
/* Try sending the command at currentCmd. */
/* See if there is anything that needs to be sent. */
if ((p_packet != NULL)
&& (bytesused < maxOutput)) {
DebugCheck(currentCmd < PACKET_COMMAND_UNKNOWN);
p_next = p_packet->next;
#ifndef NDEBUG
if (strcmp(p_packet->tag, "CmQ") != 0) {
printf("Bad packet %p\n", p_packet);
DebugCheck(FALSE);
}
#endif
/* See if it is time to send it. */
/** (It's always time to send an ACK.) **/
if ((currentCmd == PACKET_COMMAND_ACK)
|| (p_packet->timeToRetry < time)) {
/* Yes, it is time to send it. */
packetLength = p_packet->packet.header.packetLength;
/* Add the count to the output. */
bytesused += packetLength + sizeof(T_packetHeader);
/* Make sure this didn't go over the threshold. */
if (bytesused >= maxOutput)
break;
/* Let's send that packet to the given destination. */
DirectTalkSetDestination(&p_packet->destination);
status =
PacketSend(
(T_packetEitherShortOrLong *)(&p_packet->packet));
sentAny = TRUE;
#ifdef COMPILE_OPTION_CREATE_PACKET_DATA_FILE
fprintf(G_packetFile, "S(%d) cmd=%2d, id=%ld, time=%ld\n", CmdQGetActivePortNum (), p_packet->packet.data[0], p_packet->packet.header.id, SyncTimeGet()); fflush(G_packetFile);
#endif
/* Was the packet actually sent? */
if (status == 0) {
/* Packet was sent correctly (as far as we know). */
/* Is this a lossy or lossless command queue? */
if ((G_CmdQTypeCommand[currentCmd]
== PACKET_COMMAND_TYPE_LOSSY)
|| (DirectTalkIsBroadcastAddress(
&p_packet->destination))) {
/* Lossy. Means we can go ahead and */
/* discard this packet. */
ICmdQDiscardPacket(currentCmd, p_packet);
} else {
/* Lossless. Means we must wait for an ACK */
/* packet to confirm that we were sent. */
/* Until then, we can't discard the packet. */
/* But we might have to resend latter. */
/* Set up the retry time. */
p_packet->timeToRetry = time
+ p_packet->retryTime;
}
} else {
/* Packet was NOT sent correctly. */
/** -- IFF the packet is lossless... **/
/* We'll have to retry later. Change the time, */
/* but don't remove it from the linked list. */
if (G_CmdQTypeCommand[currentCmd]
== PACKET_COMMAND_TYPE_LOSSLESS) {
p_packet->timeToRetry = time
+ p_packet->retryTime;
} else {
/* Waste it! We can't wait around */
ICmdQDiscardPacket(currentCmd, p_packet);
}
}
} else {
/* Don't loop if it is not time to send. */
break;
}
/** Now, if we aren't checking the ACK queue, we need **/
/** to break after the first send. If we are, we **/
/** want to dump everything in the queue. **/
if (currentCmd != PACKET_COMMAND_ACK)
break;
}
// Move to the next packet (if any)
p_packet = p_next;
while (!p_packet) {
/* Update to the next command. */
currentCmd++;
if (currentCmd < PACKET_COMMAND_MAX) {
// Get the beginning of the list
p_packet = G_activeCmdQList[currentCmd].first;
if (p_packet)
p_next = p_packet->next;
else
p_next = 0;
} else {
break;
}
}
} while (currentCmd < PACKET_COMMAND_MAX);
// Loop back to the start looking for more to send
currentCmd = 0;
} while ((bytesused < maxOutput) && (sentAny == TRUE));
}
DebugEnd() ;
}
/*****************************************************************************
* Entry point
*****************************************************************************/
int main( int i_argc, char **pp_argv )
{
int i, c;
int i_priority = -1;
int i_ttl = 0;
struct pollfd *pfd = NULL;
int i_fd;
bool b_tcp;
#define ADD_INPUT \
p_inputs = realloc( p_inputs, ++i_nb_inputs * sizeof(input_t) ); \
p_inputs[i_nb_inputs - 1].i_fd = i_fd; \
p_inputs[i_nb_inputs - 1].b_tcp = b_tcp; \
p_inputs[i_nb_inputs - 1].p_block = NULL; \
pfd = realloc( pfd, i_nb_inputs * sizeof(struct pollfd) ); \
pfd[i_nb_inputs - 1].fd = i_fd; \
pfd[i_nb_inputs - 1].events = POLLIN | POLLERR | POLLRDHUP | POLLHUP;
while ( (c = getopt( i_argc, pp_argv, "i:t:b:g:j:r:n:x:X:Um:R:h" )) != -1 )
{
switch ( c )
{
case 'i':
i_priority = strtol( optarg, NULL, 0 );
break;
case 't':
i_ttl = strtol( optarg, NULL, 0 );
break;
case 'b':
i_buffer_length = strtoll( optarg, NULL, 0 ) * 27000;
break;
case 'g':
i_cr_max_gap = strtoll( optarg, NULL, 0 ) * 27000;
break;
case 'j':
i_cr_max_jitter = strtoll( optarg, NULL, 0 ) * 27000;
break;
case 'r':
i_cr_average = strtol( optarg, NULL, 0 );
break;
case 'n':
i_max_retx_burst = strtoul( optarg, NULL, 0 );
break;
case 'x':
i_retx_delay = strtoll( optarg, NULL, 0 ) * 27000;
break;
case 'X':
i_retx_fd = i_fd = OpenSocket( optarg, 0, 0, 0, NULL, &b_tcp, NULL );
if ( i_fd == -1 )
{
msg_Err( NULL, "unable to set up retx with %s\n", optarg );
exit(EXIT_FAILURE);
}
ADD_INPUT
break;
case 'U':
b_udp = 1;
break;
case 'm':
i_asked_payload_size = strtol( optarg, NULL, 0 );
break;
case 'R':
i_rtp_header_size = strtol( optarg, NULL, 0 );
break;
case 'h':
default:
usage();
break;
}
}
if ( optind >= i_argc - 1 )
usage();
while ( optind < i_argc - 1 )
{
i_fd = OpenSocket( pp_argv[optind], 0, DEFAULT_PORT, 0, NULL,
&b_tcp, NULL );
if ( i_fd == -1 )
{
msg_Err( NULL, "unable to open input %s\n", pp_argv[optind] );
exit(EXIT_FAILURE);
}
optind++;
ADD_INPUT
}
msg_Dbg( NULL, "%d inputs", i_nb_inputs );
i_nb_retx = (i_buffer_length - MIN_RETX_DELAY) / i_retx_delay;
pp_retx = malloc( i_nb_retx * sizeof(block_t *) );
for ( i = 0; i < i_nb_retx; i++ )
pp_retx[i] = NULL;
if ( i_retx_fd && i_nb_retx )
msg_Dbg( NULL, "%d retx passes", i_nb_retx );
i_output_fd = OpenSocket( pp_argv[optind], i_ttl, 0, DEFAULT_PORT, NULL,
NULL, NULL );
if ( i_output_fd == -1 )
{
msg_Err( NULL, "unable to open output %s\n", pp_argv[optind] );
exit(EXIT_FAILURE);
}
clock_Init();
if ( i_priority > 0 )
{
struct sched_param param;
int i_error;
memset( ¶m, 0, sizeof(struct sched_param) );
param.sched_priority = i_priority;
if ( (i_error = pthread_setschedparam( pthread_self(), SCHED_RR,
¶m )) )
{
msg_Warn( NULL, "couldn't set thread priority: %s",
strerror(i_error) );
}
}
for ( ; ; )
{
int i_timeout = -1;
uint64_t i_current_date;
while ( p_first != NULL
&& p_first->i_date <= (i_current_date = wall_Date()) + 26999 )
PacketSend();
i_current_date = wall_Date();
RetxCheck( i_current_date );
i_current_date = wall_Date();
if ( p_first != NULL )
i_timeout = (p_first->i_date - i_current_date) / 27000;
if ( poll( pfd, i_nb_inputs, i_timeout ) < 0 )
{
int saved_errno = errno;
msg_Warn( NULL, "couldn't poll(): %s", strerror(errno) );
if ( saved_errno == EINTR ) continue;
exit(EXIT_FAILURE);
}
i_current_date = wall_Date();
for ( i = 0; i < i_nb_inputs; i++ )
{
input_t *p_input = &p_inputs[i];
if ( pfd[i].revents & POLLIN )
{
ssize_t i_size = i_asked_payload_size + i_rtp_header_size;
uint8_t *p_buffer;
if ( p_input->p_block == NULL )
{
p_input->p_block = malloc( sizeof(block_t) + i_size );
p_buffer = p_input->p_block->p_data =
(uint8_t *)p_input->p_block + sizeof(block_t);
p_input->p_block->i_size = 0;
}
else
{
p_buffer = p_input->p_block->p_data +
p_input->p_block->i_size;
i_size -= p_input->p_block->i_size;
}
i_size = read( p_input->i_fd, p_buffer, i_size );
if ( i_size < 0 && errno != EAGAIN && errno != EINTR &&
errno != ECONNREFUSED )
{
msg_Err( NULL, "unrecoverable read error, dying (%s)",
strerror(errno) );
exit(EXIT_FAILURE);
}
if ( i_size <= 0 ) continue;
p_input->p_block->i_size += i_size;
if ( p_input->b_tcp &&
p_input->p_block->i_size !=
i_asked_payload_size + i_rtp_header_size )
continue;
if ( i_retx_fd == -1 || i )
PacketRecv( p_input->p_block, i_current_date );
else
PacketRecv( p_input->p_block, 0 );
p_input->p_block = NULL;
}
else if ( pfd[i].revents & (POLLERR | POLLRDHUP | POLLHUP) )
{
msg_Err( NULL, "poll error on input %d" );
exit(EXIT_FAILURE);
}
}
}
return EXIT_SUCCESS;
}