You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1720 lines
72 KiB
1720 lines
72 KiB
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Digital Voice Modem - Modem Host Software
|
|
* GPLv2 Open Source. Use is subject to license terms.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* Copyright (C) 2016,2017,2018 Jonathan Naylor, G4KLX
|
|
* Copyright (C) 2017-2024 Bryan Biedenkapp, N2PLL
|
|
*
|
|
*/
|
|
#include "Defines.h"
|
|
#include "common/p25/P25Defines.h"
|
|
#include "common/p25/acl/AccessControl.h"
|
|
#include "common/p25/lc/tdulc/TDULCFactory.h"
|
|
#include "common/p25/sndcp/SNDCPFactory.h"
|
|
#include "common/p25/P25Utils.h"
|
|
#include "common/p25/Sync.h"
|
|
#include "common/edac/CRC.h"
|
|
#include "common/Log.h"
|
|
#include "common/Utils.h"
|
|
#include "p25/packet/Data.h"
|
|
#include "ActivityLog.h"
|
|
|
|
using namespace p25;
|
|
using namespace p25::defines;
|
|
using namespace p25::data;
|
|
using namespace p25::sndcp;
|
|
using namespace p25::packet;
|
|
|
|
#include <cassert>
|
|
#include <cstring>
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// Constants
|
|
// ---------------------------------------------------------------------------
|
|
|
|
const uint8_t MAX_PDU_RETRY_CNT = 2U;
|
|
const uint32_t CONV_REG_WAIT_TIMEOUT = 750U; // ms
|
|
const uint32_t SNDCP_READY_TIMEOUT = 10U;
|
|
const uint32_t SNDCP_STANDBY_TIMEOUT = 60U;
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// Public Class Members
|
|
// ---------------------------------------------------------------------------
|
|
|
|
/* Resets the data states for the RF interface. */
|
|
|
|
void Data::resetRF()
|
|
{
|
|
m_rfDataBlockCnt = 0U;
|
|
m_rfPDUCount = 0U;
|
|
m_rfPDUBits = 0U;
|
|
|
|
m_rfDataHeader.reset();
|
|
}
|
|
|
|
/* Process a data frame from the RF interface. */
|
|
|
|
bool Data::process(uint8_t* data, uint32_t len)
|
|
{
|
|
assert(data != nullptr);
|
|
|
|
// decode the NID
|
|
bool valid = m_p25->m_nid.decode(data + 2U);
|
|
|
|
if (m_p25->m_rfState == RS_RF_LISTENING && !valid)
|
|
return false;
|
|
|
|
if (m_prevRfState != RS_RF_DATA) {
|
|
m_prevRfState = m_p25->m_rfState;
|
|
}
|
|
|
|
uint8_t duid = m_p25->m_nid.getDUID();
|
|
|
|
// are we interrupting a running CC?
|
|
if (m_p25->m_ccRunning) {
|
|
m_p25->m_ccHalted = true;
|
|
}
|
|
|
|
// handle individual DUIDs
|
|
if (duid == DUID::PDU) {
|
|
m_inbound = true;
|
|
|
|
if (m_p25->m_rfState != RS_RF_DATA) {
|
|
m_rfDataHeader.reset();
|
|
m_rfExtendedAddress = false;
|
|
m_rfDataBlockCnt = 0U;
|
|
m_rfPDUCount = 0U;
|
|
m_rfPDUBits = 0U;
|
|
|
|
::memset(m_rfPDU, 0x00U, P25_PDU_FRAME_LENGTH_BYTES + 2U);
|
|
|
|
m_p25->m_rfState = RS_RF_DATA;
|
|
|
|
::memset(m_rfPduUserData, 0x00U, P25_MAX_PDU_BLOCKS * P25_PDU_CONFIRMED_LENGTH_BYTES + 2U);
|
|
m_rfPduUserDataLength = 0U;
|
|
}
|
|
|
|
uint32_t start = m_rfPDUCount * P25_PDU_FRAME_LENGTH_BITS;
|
|
|
|
uint8_t buffer[P25_PDU_FRAME_LENGTH_BYTES];
|
|
::memset(buffer, 0x00U, P25_PDU_FRAME_LENGTH_BYTES);
|
|
|
|
uint32_t bits = P25Utils::decode(data + 2U, buffer, start, start + P25_PDU_FRAME_LENGTH_BITS);
|
|
m_rfPDUBits = Utils::getBits(buffer, m_rfPDU, 0U, bits);
|
|
|
|
uint32_t offset = P25_PREAMBLE_LENGTH_BITS + P25_PDU_FEC_LENGTH_BITS;
|
|
if (m_rfPDUCount == 0U) {
|
|
::memset(buffer, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
Utils::getBitRange(m_rfPDU, buffer, P25_PREAMBLE_LENGTH_BITS, P25_PDU_FEC_LENGTH_BITS);
|
|
bool ret = m_rfDataHeader.decode(buffer);
|
|
if (!ret) {
|
|
LogWarning(LOG_RF, P25_PDU_STR ", unfixable RF 1/2 rate header data");
|
|
Utils::dump(1U, "Unfixable PDU Data", buffer, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
m_rfDataHeader.reset();
|
|
m_rfExtendedAddress = false;
|
|
m_rfPDUCount = 0U;
|
|
m_rfPDUBits = 0U;
|
|
m_p25->m_rfState = m_prevRfState;
|
|
return false;
|
|
}
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, ack = %u, outbound = %u, fmt = $%02X, mfId = $%02X, sap = $%02X, fullMessage = %u, blocksToFollow = %u, padLength = %u, packetLength = %u, S = %u, n = %u, seqNo = %u, lastFragment = %u, hdrOffset = %u, llId = %u",
|
|
m_rfDataHeader.getAckNeeded(), m_rfDataHeader.getOutbound(), m_rfDataHeader.getFormat(), m_rfDataHeader.getMFId(), m_rfDataHeader.getSAP(), m_rfDataHeader.getFullMessage(),
|
|
m_rfDataHeader.getBlocksToFollow(), m_rfDataHeader.getPadLength(), m_rfDataHeader.getPacketLength(), m_rfDataHeader.getSynchronize(), m_rfDataHeader.getNs(), m_rfDataHeader.getFSN(), m_rfDataHeader.getLastFragment(),
|
|
m_rfDataHeader.getHeaderOffset(), m_rfDataHeader.getLLId());
|
|
}
|
|
|
|
// make sure we don't get a PDU with more blocks then we support
|
|
if (m_rfDataHeader.getBlocksToFollow() >= P25_MAX_PDU_BLOCKS) {
|
|
LogError(LOG_RF, P25_PDU_STR ", ISP, too many PDU blocks to process, %u > %u", m_rfDataHeader.getBlocksToFollow(), P25_MAX_PDU_BLOCKS);
|
|
|
|
m_rfDataHeader.reset();
|
|
m_rfExtendedAddress = false;
|
|
m_rfPDUCount = 0U;
|
|
m_rfPDUBits = 0U;
|
|
m_p25->m_rfState = m_prevRfState;
|
|
return false;
|
|
}
|
|
|
|
// if we're a dedicated CC or in control only mode, we only want to handle AMBTs. Otherwise return
|
|
if ((m_p25->m_dedicatedControl || m_p25->m_controlOnly) && m_rfDataHeader.getFormat() != PDUFormatType::AMBT) {
|
|
if (m_debug) {
|
|
LogDebug(LOG_RF, "CC only mode, ignoring non-AMBT PDU from RF");
|
|
}
|
|
|
|
m_p25->m_ccHalted = false;
|
|
|
|
m_rfDataHeader.reset();
|
|
m_rfExtendedAddress = false;
|
|
m_rfPDUCount = 0U;
|
|
m_rfPDUBits = 0U;
|
|
m_p25->m_rfState = m_prevRfState;
|
|
return false;
|
|
}
|
|
|
|
// only send data blocks across the network, if we're not an AMBT,
|
|
// an RSP or a registration service
|
|
if ((m_rfDataHeader.getFormat() != PDUFormatType::AMBT) &&
|
|
(m_rfDataHeader.getSAP() != PDUSAP::CONV_DATA_REG)) {
|
|
writeNetwork(0U, buffer, P25_PDU_FEC_LENGTH_BYTES, false);
|
|
}
|
|
}
|
|
|
|
if (m_p25->m_rfState == RS_RF_DATA) {
|
|
uint32_t blocksToFollow = m_rfDataHeader.getBlocksToFollow();
|
|
uint32_t dataOffset = 0U;
|
|
|
|
// process second header if we're using enhanced addressing
|
|
if (m_rfDataHeader.getSAP() == PDUSAP::EXT_ADDR &&
|
|
m_rfDataHeader.getFormat() == PDUFormatType::UNCONFIRMED) {
|
|
::memset(buffer, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
Utils::getBitRange(m_rfPDU, buffer, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
bool ret = m_rfDataHeader.decodeExtAddr(buffer);
|
|
if (!ret) {
|
|
LogWarning(LOG_RF, P25_PDU_STR ", unfixable RF 1/2 rate second header data");
|
|
Utils::dump(1U, "Unfixable PDU Data", m_rfPDU + offset, P25_PDU_HEADER_LENGTH_BYTES);
|
|
|
|
m_rfDataHeader.reset();
|
|
m_rfPDUCount = 0U;
|
|
m_rfPDUBits = 0U;
|
|
m_p25->m_rfState = m_prevRfState;
|
|
return false;
|
|
}
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, extended address, sap = $%02X, srcLlId = %u",
|
|
m_rfDataHeader.getEXSAP(), m_rfDataHeader.getSrcLLId());
|
|
}
|
|
|
|
m_rfExtendedAddress = true;
|
|
writeNetwork(1U, buffer, P25_PDU_FEC_LENGTH_BYTES, false);
|
|
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
m_rfPDUCount++;
|
|
blocksToFollow--;
|
|
|
|
// if we are using a secondary header place it in the PDU user data buffer
|
|
m_rfDataHeader.getExtAddrData(m_rfPduUserData + dataOffset);
|
|
dataOffset += P25_PDU_HEADER_LENGTH_BYTES;
|
|
m_rfPduUserDataLength += P25_PDU_HEADER_LENGTH_BYTES;
|
|
}
|
|
|
|
uint32_t srcId = (m_rfExtendedAddress) ? m_rfDataHeader.getSrcLLId() : m_rfDataHeader.getLLId();
|
|
uint32_t dstId = m_rfDataHeader.getLLId();
|
|
|
|
m_rfPDUCount++;
|
|
uint32_t bitLength = ((blocksToFollow + 1U) * P25_PDU_FEC_LENGTH_BITS) + P25_PREAMBLE_LENGTH_BITS;
|
|
|
|
m_rfDataBlockCnt = 0U;
|
|
|
|
if (m_rfPDUBits >= bitLength) {
|
|
// process all blocks in the data stream
|
|
// if the primary header has a header offset ensure data if offset by that amount
|
|
if (m_rfDataHeader.getHeaderOffset() > 0U) {
|
|
offset += m_rfDataHeader.getHeaderOffset() * 8;
|
|
m_rfPduUserDataLength -= m_rfDataHeader.getHeaderOffset();
|
|
}
|
|
|
|
// decode data blocks
|
|
for (uint32_t i = 0U; i < blocksToFollow; i++) {
|
|
::memset(buffer, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
Utils::getBitRange(m_rfPDU, buffer, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
bool ret = m_rfData[i].decode(buffer, m_rfDataHeader);
|
|
if (ret) {
|
|
// if we are getting unconfirmed or confirmed blocks, and if we've reached the total number of blocks
|
|
// set this block as the last block for full packet CRC
|
|
if ((m_rfDataHeader.getFormat() == PDUFormatType::CONFIRMED) || (m_rfDataHeader.getFormat() == PDUFormatType::UNCONFIRMED)) {
|
|
if ((m_rfDataBlockCnt + 1U) == blocksToFollow) {
|
|
m_rfData[i].setLastBlock(true);
|
|
}
|
|
}
|
|
|
|
// are we processing extended address data from the first block?
|
|
if (m_rfDataHeader.getSAP() == PDUSAP::EXT_ADDR && m_rfDataHeader.getFormat() == PDUFormatType::CONFIRMED &&
|
|
m_rfData[i].getSerialNo() == 0U) {
|
|
uint8_t secondHeader[P25_PDU_CONFIRMED_DATA_LENGTH_BYTES];
|
|
::memset(secondHeader, 0x00U, P25_PDU_CONFIRMED_DATA_LENGTH_BYTES);
|
|
m_rfData[i].getData(secondHeader);
|
|
|
|
m_rfDataHeader.decodeExtAddr(secondHeader);
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, block %u, fmt = $%02X, lastBlock = %u, sap = $%02X, srcLlId = %u",
|
|
m_rfData[i].getSerialNo(), m_rfData[i].getFormat(), m_rfData[i].getLastBlock(), m_rfDataHeader.getEXSAP(), m_rfDataHeader.getSrcLLId());
|
|
}
|
|
|
|
srcId = m_rfDataHeader.getSrcLLId();
|
|
m_rfExtendedAddress = true;
|
|
}
|
|
else {
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, block %u, fmt = $%02X, lastBlock = %u",
|
|
(m_rfDataHeader.getFormat() == PDUFormatType::CONFIRMED) ? m_rfData[i].getSerialNo() : m_rfDataBlockCnt, m_rfData[i].getFormat(),
|
|
m_rfData[i].getLastBlock());
|
|
}
|
|
}
|
|
|
|
m_rfData[i].getData(m_rfPduUserData + dataOffset);
|
|
dataOffset += (m_rfDataHeader.getFormat() == PDUFormatType::CONFIRMED) ? P25_PDU_CONFIRMED_DATA_LENGTH_BYTES : P25_PDU_UNCONFIRMED_LENGTH_BYTES;
|
|
m_rfPduUserDataLength = dataOffset;
|
|
|
|
// only send data blocks across the network, if we're not an AMBT,
|
|
// an RSP or a registration service
|
|
if ((m_rfDataHeader.getFormat() != PDUFormatType::AMBT) &&
|
|
(m_rfDataHeader.getFormat() != PDUFormatType::RSP) &&
|
|
(m_rfDataHeader.getSAP() != PDUSAP::CONV_DATA_REG)) {
|
|
uint32_t networkBlock = m_rfDataBlockCnt + 1U;
|
|
writeNetwork(networkBlock, buffer, P25_PDU_FEC_LENGTH_BYTES, m_rfData[i].getLastBlock());
|
|
}
|
|
|
|
m_rfDataBlockCnt++;
|
|
}
|
|
else {
|
|
if (m_rfData[i].getFormat() == PDUFormatType::CONFIRMED) {
|
|
LogWarning(LOG_RF, P25_PDU_STR ", unfixable PDU data (3/4 rate or CRC), block %u", i);
|
|
|
|
// to prevent data block offset errors fill the bad block with 0's
|
|
uint8_t blankBuf[P25_PDU_CONFIRMED_DATA_LENGTH_BYTES];
|
|
::memset(blankBuf, 0x00U, P25_PDU_CONFIRMED_DATA_LENGTH_BYTES);
|
|
::memcpy(m_rfPduUserData + dataOffset, blankBuf, P25_PDU_CONFIRMED_DATA_LENGTH_BYTES);
|
|
dataOffset += P25_PDU_CONFIRMED_DATA_LENGTH_BYTES;
|
|
m_rfPduUserDataLength = dataOffset;
|
|
}
|
|
else {
|
|
LogWarning(LOG_RF, P25_PDU_STR ", unfixable PDU data (1/2 rate or CRC), block %u", i);
|
|
|
|
// to prevent data block offset errors fill the bad block with 0's
|
|
uint8_t blankBuf[P25_PDU_UNCONFIRMED_LENGTH_BYTES];
|
|
::memset(blankBuf, 0x00U, P25_PDU_UNCONFIRMED_LENGTH_BYTES);
|
|
::memcpy(m_rfPduUserData + dataOffset, blankBuf, P25_PDU_UNCONFIRMED_LENGTH_BYTES);
|
|
dataOffset += P25_PDU_UNCONFIRMED_LENGTH_BYTES;
|
|
m_rfPduUserDataLength = dataOffset;
|
|
}
|
|
|
|
if (m_dumpPDUData) {
|
|
Utils::dump(1U, "Unfixable PDU Data", buffer, P25_PDU_FEC_LENGTH_BYTES);
|
|
}
|
|
}
|
|
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
}
|
|
|
|
if (m_rfDataHeader.getBlocksToFollow() > 0U) {
|
|
bool crcRet = edac::CRC::checkCRC32(m_rfPduUserData, m_rfPduUserDataLength);
|
|
if (!crcRet) {
|
|
LogWarning(LOG_RF, P25_PDU_STR ", failed CRC-32 check, blocks %u, len %u", m_rfDataHeader.getBlocksToFollow(), m_rfPduUserDataLength);
|
|
writeRF_PDU_Ack_Response(PDUAckClass::NACK, PDUAckType::NACK_PACKET_CRC, 0U, (m_rfExtendedAddress) ? m_rfDataHeader.getSrcLLId() : m_rfDataHeader.getLLId());
|
|
}
|
|
}
|
|
|
|
if (m_dumpPDUData && m_rfDataBlockCnt > 0U) {
|
|
Utils::dump(1U, "PDU Packet", m_rfPduUserData, m_rfPduUserDataLength);
|
|
}
|
|
|
|
if (m_rfDataBlockCnt < blocksToFollow) {
|
|
LogWarning(LOG_RF, P25_PDU_STR ", incomplete PDU (%d / %d blocks)", m_rfDataBlockCnt, blocksToFollow);
|
|
}
|
|
|
|
// did we receive a response header?
|
|
if (m_rfDataHeader.getFormat() == PDUFormatType::RSP) {
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, response, fmt = $%02X, rspClass = $%02X, rspType = $%02X, rspStatus = $%02X, llId = %u, srcLlId = %u",
|
|
m_rfDataHeader.getFormat(), m_rfDataHeader.getResponseClass(), m_rfDataHeader.getResponseType(), m_rfDataHeader.getResponseStatus(),
|
|
m_rfDataHeader.getLLId(), m_rfDataHeader.getSrcLLId());
|
|
|
|
if (m_rfDataHeader.getResponseClass() == PDUAckClass::ACK && m_rfDataHeader.getResponseType() == PDUAckType::ACK) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, response, OSP ACK, llId = %u",
|
|
m_rfDataHeader.getLLId());
|
|
if (m_retryPDUData != nullptr && m_retryPDUBitLength > 0U) {
|
|
delete m_retryPDUData;
|
|
m_retryPDUData = nullptr;
|
|
|
|
m_retryPDUBitLength = 0U;
|
|
m_retryCount = 0U;
|
|
}
|
|
} else {
|
|
if (m_rfDataHeader.getResponseClass() == PDUAckClass::NACK) {
|
|
switch (m_rfDataHeader.getResponseType()) {
|
|
case PDUAckType::NACK_ILLEGAL:
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, response, OSP NACK, illegal format, llId = %u",
|
|
m_rfDataHeader.getLLId());
|
|
break;
|
|
case PDUAckType::NACK_PACKET_CRC:
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, response, OSP NACK, packet CRC error, llId = %u",
|
|
m_rfDataHeader.getLLId());
|
|
break;
|
|
case PDUAckType::NACK_SEQ:
|
|
case PDUAckType::NACK_OUT_OF_SEQ:
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, response, OSP NACK, packet out of sequence, llId = %u",
|
|
m_rfDataHeader.getLLId());
|
|
break;
|
|
case PDUAckType::NACK_UNDELIVERABLE:
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, response, OSP NACK, packet undeliverable, llId = %u",
|
|
m_rfDataHeader.getLLId());
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
} else if (m_rfDataHeader.getResponseClass() == PDUAckClass::ACK_RETRY) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, response, OSP ACK RETRY, llId = %u",
|
|
m_rfDataHeader.getLLId());
|
|
|
|
// really this is supposed to check the bit field in the included response
|
|
// and only return those bits -- but we're responding with the entire previous packet...
|
|
if (m_retryPDUData != nullptr && m_retryPDUBitLength > 0U) {
|
|
if (m_retryCount < MAX_PDU_RETRY_CNT) {
|
|
m_p25->writeRF_Preamble();
|
|
writeRF_PDU(m_retryPDUData, m_retryPDUBitLength, false, false, true);
|
|
m_retryCount++;
|
|
}
|
|
else {
|
|
delete m_retryPDUData;
|
|
m_retryPDUData = nullptr;
|
|
|
|
m_retryPDUBitLength = 0U;
|
|
m_retryCount = 0U;
|
|
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ISP, response, OSP ACK RETRY, llId = %u, exceeded retries, undeliverable",
|
|
m_rfDataHeader.getLLId());
|
|
|
|
writeRF_PDU_Ack_Response(PDUAckClass::NACK, PDUAckType::NACK_UNDELIVERABLE, 0U, m_rfDataHeader.getLLId());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// only repeat the PDU locally if the packet isn't for the FNE
|
|
if (m_repeatPDU && m_rfDataHeader.getLLId() != WUID_FNE) {
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", repeating ACK PDU, llId = %u, srcLlId = %u", m_rfDataHeader.getLLId(), m_rfDataHeader.getSrcLLId());
|
|
}
|
|
|
|
writeRF_PDU_Buffered(); // re-generate buffered PDU and send it on
|
|
}
|
|
}
|
|
else {
|
|
uint8_t sap = (m_rfExtendedAddress) ? m_rfDataHeader.getEXSAP() : m_rfDataHeader.getSAP();
|
|
|
|
// handle standard P25 service access points
|
|
switch (sap) {
|
|
case PDUSAP::ARP:
|
|
{
|
|
/* bryanb: quick and dirty ARP logging */
|
|
uint8_t arpPacket[P25_PDU_ARP_PCKT_LENGTH];
|
|
::memset(arpPacket, 0x00U, P25_PDU_ARP_PCKT_LENGTH);
|
|
::memcpy(arpPacket, m_rfPduUserData + P25_PDU_HEADER_LENGTH_BYTES, P25_PDU_ARP_PCKT_LENGTH);
|
|
|
|
uint16_t opcode = __GET_UINT16B(arpPacket, 6U);
|
|
uint32_t srcHWAddr = __GET_UINT16(arpPacket, 8U);
|
|
uint32_t srcProtoAddr = __GET_UINT32(arpPacket, 11U);
|
|
//uint32_t tgtHWAddr = __GET_UINT16(arpPacket, 15U);
|
|
uint32_t tgtProtoAddr = __GET_UINT32(arpPacket, 18U);
|
|
|
|
if (m_verbose) {
|
|
if (opcode == P25_PDU_ARP_REQUEST) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ARP request, who has %s? tell %s (%u)", __IP_FROM_UINT(tgtProtoAddr).c_str(), __IP_FROM_UINT(srcProtoAddr).c_str(), srcHWAddr);
|
|
} else if (opcode == P25_PDU_ARP_REPLY) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ARP reply, %s is at %u", __IP_FROM_UINT(srcProtoAddr).c_str(), srcHWAddr);
|
|
}
|
|
}
|
|
|
|
writeRF_PDU_Buffered(); // re-generate buffered PDU and send it on
|
|
}
|
|
break;
|
|
case PDUSAP::SNDCP_CTRL_DATA:
|
|
{
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", SNDCP_CTRL_DATA (SNDCP Control Data), blocksToFollow = %u",
|
|
m_rfDataHeader.getBlocksToFollow());
|
|
}
|
|
|
|
processSNDCPControl(m_rfPduUserData);
|
|
}
|
|
break;
|
|
case PDUSAP::CONV_DATA_REG:
|
|
{
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", CONV_DATA_REG (Conventional Data Registration), blocksToFollow = %u",
|
|
m_rfDataHeader.getBlocksToFollow());
|
|
}
|
|
|
|
processConvDataReg(m_rfPduUserData);
|
|
}
|
|
break;
|
|
case PDUSAP::TRUNK_CTRL:
|
|
{
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", TRUNK_CTRL (Alternate MBT Packet), lco = $%02X, blocksToFollow = %u",
|
|
m_rfDataHeader.getAMBTOpcode(), m_rfDataHeader.getBlocksToFollow());
|
|
}
|
|
|
|
m_p25->m_control->processMBT(m_rfDataHeader, m_rfData);
|
|
}
|
|
break;
|
|
default:
|
|
// only repeat the PDU locally if the packet isn't for the FNE
|
|
if (m_repeatPDU && m_rfDataHeader.getLLId() != WUID_FNE) {
|
|
::ActivityLog("P25", true, "RF data transmission from %u to %u, %u blocks", srcId, dstId, m_rfDataHeader.getBlocksToFollow());
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", repeating PDU, llId = %u", (m_rfExtendedAddress) ? m_rfDataHeader.getSrcLLId() : m_rfDataHeader.getLLId());
|
|
}
|
|
|
|
writeRF_PDU_Buffered(); // re-generate buffered PDU and send it on
|
|
::ActivityLog("P25", true, "end of RF data transmission");
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
m_rfDataHeader.reset();
|
|
m_rfExtendedAddress = false;
|
|
m_rfDataBlockCnt = 0U;
|
|
m_rfPDUCount = 0U;
|
|
m_rfPDUBits = 0U;
|
|
m_rfPduUserDataLength = 0U;
|
|
|
|
m_p25->m_rfState = m_prevRfState;
|
|
} // switch (m_rfDataHeader.getSAP())
|
|
}
|
|
|
|
m_inbound = false;
|
|
return true;
|
|
}
|
|
else {
|
|
LogError(LOG_RF, "P25 unhandled data DUID, duid = $%02X", duid);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Process a data frame from the network. */
|
|
|
|
bool Data::processNetwork(uint8_t* data, uint32_t len, uint32_t blockLength)
|
|
{
|
|
if (m_p25->m_rfState != RS_RF_LISTENING && m_p25->m_netState == RS_NET_IDLE)
|
|
return false;
|
|
|
|
if (m_p25->m_netState != RS_NET_DATA) {
|
|
m_netDataHeader.reset();
|
|
m_netDataOffset = 0U;
|
|
m_netDataBlockCnt = 0U;
|
|
m_netPDUCount = 0U;
|
|
|
|
::memset(m_netPDU, 0x00U, P25_PDU_FRAME_LENGTH_BYTES + 2U);
|
|
|
|
m_p25->m_netState = RS_NET_DATA;
|
|
|
|
uint8_t buffer[P25_PDU_FEC_LENGTH_BYTES];
|
|
::memset(buffer, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
::memcpy(buffer, data + 24U, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
bool ret = m_netDataHeader.decode(buffer);
|
|
if (!ret) {
|
|
LogWarning(LOG_NET, P25_PDU_STR ", unfixable RF 1/2 rate header data");
|
|
Utils::dump(1U, "Unfixable PDU Data", buffer, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
m_netDataHeader.reset();
|
|
m_netDataBlockCnt = 0U;
|
|
m_netPDUCount = 0U;
|
|
m_p25->m_netState = RS_NET_IDLE;
|
|
return false;
|
|
}
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ack = %u, outbound = %u, fmt = $%02X, sap = $%02X, fullMessage = %u, blocksToFollow = %u, padLength = %u, packetLength = %u, S = %u, n = %u, seqNo = %u, hdrOffset = %u, llId = %u",
|
|
m_netDataHeader.getAckNeeded(), m_netDataHeader.getOutbound(), m_netDataHeader.getFormat(), m_netDataHeader.getSAP(), m_netDataHeader.getFullMessage(),
|
|
m_netDataHeader.getBlocksToFollow(), m_netDataHeader.getPadLength(), m_netDataHeader.getPacketLength(), m_netDataHeader.getSynchronize(), m_netDataHeader.getNs(), m_netDataHeader.getFSN(),
|
|
m_netDataHeader.getHeaderOffset(), m_netDataHeader.getLLId());
|
|
}
|
|
|
|
// make sure we don't get a PDU with more blocks then we support
|
|
if (m_netDataHeader.getBlocksToFollow() >= P25_MAX_PDU_BLOCKS) {
|
|
LogError(LOG_NET, P25_PDU_STR ", too many PDU blocks to process, %u > %u", m_netDataHeader.getBlocksToFollow(), P25_MAX_PDU_BLOCKS);
|
|
|
|
m_netDataHeader.reset();
|
|
m_netDataOffset = 0U;
|
|
m_netDataBlockCnt = 0U;
|
|
m_netPDUCount = 0U;
|
|
m_p25->m_netState = RS_NET_IDLE;
|
|
return false;
|
|
}
|
|
|
|
// if we're a dedicated CC or in control only mode, we only want to handle AMBTs. Otherwise return
|
|
if ((m_p25->m_dedicatedControl || m_p25->m_controlOnly) && m_netDataHeader.getFormat() != PDUFormatType::AMBT) {
|
|
if (m_debug) {
|
|
LogDebug(LOG_NET, "CC only mode, ignoring non-AMBT PDU from network");
|
|
}
|
|
|
|
m_netDataHeader.reset();
|
|
m_netDataOffset = 0U;
|
|
m_netDataBlockCnt = 0U;
|
|
m_netPDUCount = 0U;
|
|
m_p25->m_netState = RS_NET_IDLE;
|
|
return false;
|
|
}
|
|
|
|
m_netPDUCount++;
|
|
|
|
// did we receive a response header?
|
|
if (m_netDataHeader.getFormat() == PDUFormatType::RSP) {
|
|
m_p25->m_netState = RS_NET_IDLE;
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ISP, response, fmt = $%02X, rspClass = $%02X, rspType = $%02X, rspStatus = $%02X, llId = %u, srcLlId = %u",
|
|
m_netDataHeader.getFormat(), m_netDataHeader.getResponseClass(), m_netDataHeader.getResponseType(), m_netDataHeader.getResponseStatus(),
|
|
m_netDataHeader.getLLId(), m_netDataHeader.getSrcLLId());
|
|
|
|
if (m_netDataHeader.getResponseClass() == PDUAckClass::ACK && m_netDataHeader.getResponseType() == PDUAckType::ACK) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ISP, response, OSP ACK, llId = %u",
|
|
m_netDataHeader.getLLId());
|
|
} else {
|
|
if (m_netDataHeader.getResponseClass() == PDUAckClass::NACK) {
|
|
switch (m_netDataHeader.getResponseType()) {
|
|
case PDUAckType::NACK_ILLEGAL:
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ISP, response, OSP NACK, illegal format, llId = %u",
|
|
m_netDataHeader.getLLId());
|
|
break;
|
|
case PDUAckType::NACK_PACKET_CRC:
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ISP, response, OSP NACK, packet CRC error, llId = %u",
|
|
m_netDataHeader.getLLId());
|
|
break;
|
|
case PDUAckType::NACK_SEQ:
|
|
case PDUAckType::NACK_OUT_OF_SEQ:
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ISP, response, OSP NACK, packet out of sequence, llId = %u",
|
|
m_netDataHeader.getLLId());
|
|
break;
|
|
case PDUAckType::NACK_UNDELIVERABLE:
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ISP, response, OSP NACK, packet undeliverable, llId = %u",
|
|
m_netDataHeader.getLLId());
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (m_repeatPDU) {
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", repeating ACK PDU, llId = %u, srcLlId = %u", m_netDataHeader.getLLId(), m_netDataHeader.getSrcLLId());
|
|
}
|
|
|
|
writeNet_PDU_Buffered(); // re-generate buffered PDU and send it on
|
|
}
|
|
|
|
m_netDataHeader.reset();
|
|
m_netExtendedAddress = false;
|
|
m_netDataOffset = 0U;
|
|
m_netDataBlockCnt = 0U;
|
|
m_netPDUCount = 0U;
|
|
m_netPduUserDataLength = 0U;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
if (m_p25->m_netState == RS_NET_DATA) {
|
|
::memcpy(m_netPDU + m_netDataOffset, data + 24U, blockLength);
|
|
m_netDataOffset += blockLength;
|
|
m_netPDUCount++;
|
|
m_netDataBlockCnt++;
|
|
|
|
if (m_netDataBlockCnt >= m_netDataHeader.getBlocksToFollow()) {
|
|
uint32_t blocksToFollow = m_netDataHeader.getBlocksToFollow();
|
|
uint32_t offset = 0U;
|
|
uint32_t dataOffset = 0U;
|
|
|
|
uint8_t buffer[P25_PDU_FEC_LENGTH_BYTES];
|
|
|
|
// process second header if we're using enhanced addressing
|
|
if (m_netDataHeader.getSAP() == PDUSAP::EXT_ADDR &&
|
|
m_netDataHeader.getFormat() == PDUFormatType::UNCONFIRMED) {
|
|
::memset(buffer, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
::memcpy(buffer, m_netPDU, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
bool ret = m_netDataHeader.decodeExtAddr(buffer);
|
|
if (!ret) {
|
|
LogWarning(LOG_NET, P25_PDU_STR ", unfixable RF 1/2 rate second header data");
|
|
Utils::dump(1U, "Unfixable PDU Data", buffer, P25_PDU_HEADER_LENGTH_BYTES);
|
|
|
|
m_netDataHeader.reset();
|
|
m_netDataBlockCnt = 0U;
|
|
m_netPDUCount = 0U;
|
|
m_p25->m_netState = RS_NET_IDLE;
|
|
return false;
|
|
}
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ISP, extended address, sap = $%02X, srcLlId = %u",
|
|
m_netDataHeader.getEXSAP(), m_netDataHeader.getSrcLLId());
|
|
}
|
|
|
|
m_netExtendedAddress = true;
|
|
|
|
offset += P25_PDU_FEC_LENGTH_BYTES;
|
|
blocksToFollow--;
|
|
|
|
// if we are using a secondary header place it in the PDU user data buffer
|
|
m_netDataHeader.getExtAddrData(m_netPduUserData + dataOffset);
|
|
dataOffset += P25_PDU_HEADER_LENGTH_BYTES;
|
|
m_netPduUserDataLength += P25_PDU_HEADER_LENGTH_BYTES;
|
|
}
|
|
|
|
m_netDataBlockCnt = 0U;
|
|
|
|
// decode data blocks
|
|
for (uint32_t i = 0U; i < blocksToFollow; i++) {
|
|
::memset(buffer, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
::memcpy(buffer, m_netPDU + offset, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
bool ret = m_netData[i].decode(buffer, m_netDataHeader);
|
|
if (ret) {
|
|
// if we are getting unconfirmed or confirmed blocks, and if we've reached the total number of blocks
|
|
// set this block as the last block for full packet CRC
|
|
if ((m_netDataHeader.getFormat() == PDUFormatType::CONFIRMED) || (m_netDataHeader.getFormat() == PDUFormatType::UNCONFIRMED)) {
|
|
if ((m_netDataBlockCnt + 1U) == blocksToFollow) {
|
|
m_netData[i].setLastBlock(true);
|
|
}
|
|
}
|
|
|
|
// are we processing extended address data from the first block?
|
|
if (m_netDataHeader.getSAP() == PDUSAP::EXT_ADDR && m_netDataHeader.getFormat() == PDUFormatType::CONFIRMED &&
|
|
m_netData[i].getSerialNo() == 0U) {
|
|
uint8_t secondHeader[P25_PDU_HEADER_LENGTH_BYTES];
|
|
::memset(secondHeader, 0x00U, P25_PDU_HEADER_LENGTH_BYTES);
|
|
m_netData[i].getData(secondHeader);
|
|
|
|
m_netDataHeader.decodeExtAddr(secondHeader);
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ISP, block %u, fmt = $%02X, lastBlock = %u, sap = $%02X, srcLlId = %u",
|
|
m_netData[i].getSerialNo(), m_netData[i].getFormat(), m_netData[i].getLastBlock(), m_netDataHeader.getEXSAP(), m_netDataHeader.getSrcLLId());
|
|
}
|
|
|
|
m_netExtendedAddress = true;
|
|
}
|
|
else {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", block %u, fmt = $%02X, lastBlock = %u",
|
|
(m_netDataHeader.getFormat() == PDUFormatType::CONFIRMED) ? m_netData[i].getSerialNo() : m_netDataBlockCnt, m_netData[i].getFormat(),
|
|
m_netData[i].getLastBlock());
|
|
}
|
|
|
|
m_netData[i].getData(m_netPduUserData + dataOffset);
|
|
dataOffset += (m_netDataHeader.getFormat() == PDUFormatType::CONFIRMED) ? P25_PDU_CONFIRMED_DATA_LENGTH_BYTES : P25_PDU_UNCONFIRMED_LENGTH_BYTES;
|
|
m_netPduUserDataLength = dataOffset;
|
|
|
|
m_netDataBlockCnt++;
|
|
}
|
|
else {
|
|
if (m_netData[i].getFormat() == PDUFormatType::CONFIRMED)
|
|
LogWarning(LOG_NET, P25_PDU_STR ", unfixable PDU data (3/4 rate or CRC), block %u", i);
|
|
else
|
|
LogWarning(LOG_NET, P25_PDU_STR ", unfixable PDU data (1/2 rate or CRC), block %u", i);
|
|
|
|
if (m_dumpPDUData) {
|
|
Utils::dump(1U, "Unfixable PDU Data", buffer, P25_PDU_FEC_LENGTH_BYTES);
|
|
}
|
|
}
|
|
|
|
offset += P25_PDU_FEC_LENGTH_BYTES;
|
|
}
|
|
|
|
if (m_netDataHeader.getBlocksToFollow() > 0U) {
|
|
bool crcRet = edac::CRC::checkCRC32(m_netPduUserData, m_netPduUserDataLength);
|
|
if (!crcRet) {
|
|
LogWarning(LOG_NET, P25_PDU_STR ", failed CRC-32 check, blocks %u, len %u", m_netDataHeader.getBlocksToFollow(), m_netPduUserDataLength);
|
|
}
|
|
}
|
|
|
|
if (m_dumpPDUData && m_netDataBlockCnt > 0U) {
|
|
Utils::dump(1U, "PDU Packet", m_netPduUserData, m_netPduUserDataLength);
|
|
}
|
|
|
|
if (m_netDataBlockCnt < blocksToFollow) {
|
|
LogWarning(LOG_NET, P25_PDU_STR ", incomplete PDU (%d / %d blocks)", m_netDataBlockCnt, blocksToFollow);
|
|
}
|
|
|
|
uint32_t srcId = (m_netExtendedAddress) ? m_netDataHeader.getSrcLLId() : m_netDataHeader.getLLId();
|
|
uint32_t dstId = m_netDataHeader.getLLId();
|
|
|
|
uint8_t sap = (m_netExtendedAddress) ? m_netDataHeader.getEXSAP() : m_netDataHeader.getSAP();
|
|
|
|
// handle standard P25 service access points
|
|
switch (sap) {
|
|
case PDUSAP::ARP:
|
|
{
|
|
/* bryanb: quick and dirty ARP logging */
|
|
uint8_t arpPacket[P25_PDU_ARP_PCKT_LENGTH];
|
|
::memset(arpPacket, 0x00U, P25_PDU_ARP_PCKT_LENGTH);
|
|
::memcpy(arpPacket, m_netPduUserData + P25_PDU_HEADER_LENGTH_BYTES, P25_PDU_ARP_PCKT_LENGTH);
|
|
|
|
uint16_t opcode = __GET_UINT16B(arpPacket, 6U);
|
|
uint32_t srcHWAddr = __GET_UINT16(arpPacket, 8U);
|
|
uint32_t srcProtoAddr = __GET_UINT32(arpPacket, 11U);
|
|
//uint32_t tgtHWAddr = __GET_UINT16(arpPacket, 15U);
|
|
uint32_t tgtProtoAddr = __GET_UINT32(arpPacket, 18U);
|
|
|
|
if (m_verbose) {
|
|
if (opcode == P25_PDU_ARP_REQUEST) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ARP request, who has %s? tell %s (%u)", __IP_FROM_UINT(tgtProtoAddr).c_str(), __IP_FROM_UINT(srcProtoAddr).c_str(), srcHWAddr);
|
|
} else if (opcode == P25_PDU_ARP_REPLY) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", ARP reply, %s is at %u", __IP_FROM_UINT(srcProtoAddr).c_str(), srcHWAddr);
|
|
}
|
|
}
|
|
|
|
writeNet_PDU_Buffered(); // re-generate buffered PDU and send it on
|
|
}
|
|
break;
|
|
default:
|
|
::ActivityLog("P25", false, "Net data transmission from %u to %u, %u blocks", srcId, dstId, m_netDataHeader.getBlocksToFollow());
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", transmitting network PDU, llId = %u", (m_netExtendedAddress) ? m_netDataHeader.getSrcLLId() : m_netDataHeader.getLLId());
|
|
}
|
|
|
|
writeNet_PDU_Buffered(); // re-generate buffered PDU and send it on
|
|
|
|
::ActivityLog("P25", false, "end of Net data transmission");
|
|
break;
|
|
}
|
|
|
|
m_netDataHeader.reset();
|
|
m_netExtendedAddress = false;
|
|
m_netDataOffset = 0U;
|
|
m_netDataBlockCnt = 0U;
|
|
m_netPDUCount = 0U;
|
|
m_netPduUserDataLength = 0U;
|
|
|
|
m_p25->m_netState = RS_NET_IDLE;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Helper to check if a logical link ID has registered with data services. */
|
|
|
|
bool Data::hasLLIdFNEReg(uint32_t llId) const
|
|
{
|
|
// lookup dynamic FNE registration table entry
|
|
try {
|
|
ulong64_t tblIpAddr = m_fneRegTable.at(llId);
|
|
if (tblIpAddr != 0U) {
|
|
return true;
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
} catch (...) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Helper to write user data as a P25 PDU packet. */
|
|
|
|
void Data::writeRF_PDU_User(data::DataHeader& dataHeader, bool extendedAddress, uint8_t* pduUserData, bool imm)
|
|
{
|
|
assert(pduUserData != nullptr);
|
|
|
|
m_p25->writeRF_TDU(true, imm);
|
|
|
|
uint32_t bitLength = ((dataHeader.getBlocksToFollow() + 1U) * P25_PDU_FEC_LENGTH_BITS) + P25_PREAMBLE_LENGTH_BITS;
|
|
uint32_t offset = P25_PREAMBLE_LENGTH_BITS;
|
|
|
|
UInt8Array __data = std::make_unique<uint8_t[]>((bitLength / 8U) + 1U);
|
|
uint8_t* data = __data.get();
|
|
|
|
::memset(data, 0x00U, bitLength / 8U);
|
|
uint8_t block[P25_PDU_FEC_LENGTH_BYTES];
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
uint32_t blocksToFollow = dataHeader.getBlocksToFollow();
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, ack = %u, outbound = %u, fmt = $%02X, mfId = $%02X, sap = $%02X, fullMessage = %u, blocksToFollow = %u, padLength = %u, packetLength = %u, S = %u, n = %u, seqNo = %u, lastFragment = %u, hdrOffset = %u, bitLength = %u, llId = %u",
|
|
dataHeader.getAckNeeded(), dataHeader.getOutbound(), dataHeader.getFormat(), dataHeader.getMFId(), dataHeader.getSAP(), dataHeader.getFullMessage(),
|
|
dataHeader.getBlocksToFollow(), dataHeader.getPadLength(), dataHeader.getPacketLength(), dataHeader.getSynchronize(), dataHeader.getNs(), dataHeader.getFSN(), dataHeader.getLastFragment(),
|
|
dataHeader.getHeaderOffset(), bitLength, dataHeader.getLLId());
|
|
}
|
|
|
|
// generate the PDU header and 1/2 rate Trellis
|
|
dataHeader.encode(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
|
|
if (blocksToFollow > 0U) {
|
|
uint32_t dataOffset = 0U;
|
|
uint32_t packetLength = dataHeader.getPDULength();
|
|
|
|
// generate the second PDU header
|
|
if ((dataHeader.getFormat() == PDUFormatType::UNCONFIRMED) && (dataHeader.getSAP() == PDUSAP::EXT_ADDR) && extendedAddress) {
|
|
dataHeader.encodeExtAddr(pduUserData, true);
|
|
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
dataHeader.encodeExtAddr(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
|
|
bitLength += P25_PDU_FEC_LENGTH_BITS;
|
|
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
dataOffset += P25_PDU_HEADER_LENGTH_BYTES;
|
|
|
|
blocksToFollow--;
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, extended address, sap = $%02X, srcLlId = %u",
|
|
dataHeader.getEXSAP(), dataHeader.getSrcLLId());
|
|
}
|
|
}
|
|
|
|
// are we processing extended address data from the first block?
|
|
if ((dataHeader.getFormat() == PDUFormatType::CONFIRMED) && (dataHeader.getSAP() == PDUSAP::EXT_ADDR) && extendedAddress) {
|
|
dataHeader.encodeExtAddr(pduUserData);
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, sap = $%02X, srcLlId = %u",
|
|
dataHeader.getEXSAP(), dataHeader.getSrcLLId());
|
|
}
|
|
}
|
|
|
|
if (dataHeader.getFormat() != PDUFormatType::AMBT) {
|
|
edac::CRC::addCRC32(pduUserData, packetLength);
|
|
}
|
|
|
|
// generate the PDU data
|
|
for (uint32_t i = 0U; i < blocksToFollow; i++) {
|
|
DataBlock dataBlock = DataBlock();
|
|
dataBlock.setFormat(dataHeader);
|
|
dataBlock.setSerialNo(i);
|
|
dataBlock.setData(pduUserData + dataOffset);
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, block %u, fmt = $%02X, lastBlock = %u",
|
|
(dataHeader.getFormat() == PDUFormatType::CONFIRMED) ? dataBlock.getSerialNo() : i, dataBlock.getFormat(),
|
|
dataBlock.getLastBlock());
|
|
}
|
|
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
dataBlock.encode(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
dataOffset += (dataHeader.getFormat() == PDUFormatType::CONFIRMED) ? P25_PDU_CONFIRMED_DATA_LENGTH_BYTES : P25_PDU_UNCONFIRMED_LENGTH_BYTES;
|
|
}
|
|
}
|
|
|
|
writeRF_PDU(data, bitLength, false, imm);
|
|
}
|
|
|
|
/* Updates the processor by the passed number of milliseconds. */
|
|
|
|
void Data::clock(uint32_t ms)
|
|
{
|
|
// clock all the conventional registration timers
|
|
std::vector<uint32_t> connToClear = std::vector<uint32_t>();
|
|
for (auto entry : m_convRegTimerTable) {
|
|
uint32_t llId = entry.first;
|
|
|
|
m_convRegTimerTable[llId].clock(ms);
|
|
if (m_convRegTimerTable[llId].isRunning() && m_convRegTimerTable[llId].hasExpired()) {
|
|
connToClear.push_back(llId);
|
|
}
|
|
}
|
|
|
|
if (connToClear.size() > 0) {
|
|
m_p25->writeRF_Preamble();
|
|
}
|
|
|
|
// handle PDU conventional connection registration
|
|
for (uint32_t llId : connToClear) {
|
|
uint32_t ipAddr = m_convRegQueueTable[llId];
|
|
|
|
if (!acl::AccessControl::validateSrcId(llId)) {
|
|
LogWarning(LOG_RF, P25_PDU_STR ", DENY (Registration Response Deny), llId = %u, ipAddr = %s", llId, __IP_FROM_UINT(ipAddr).c_str());
|
|
writeRF_PDU_Reg_Response(PDURegType::DENY, llId, ipAddr);
|
|
}
|
|
else {
|
|
if (!hasLLIdFNEReg(llId)) {
|
|
// update dynamic FNE registration table entry
|
|
m_fneRegTable[llId] = ipAddr;
|
|
}
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", ACCEPT (Registration Response Accept), llId = %u, ipAddr = %s", llId, __IP_FROM_UINT(ipAddr).c_str());
|
|
}
|
|
|
|
writeRF_PDU_Reg_Response(PDURegType::ACCEPT, llId, ipAddr);
|
|
}
|
|
|
|
m_convRegQueueTable.erase(llId);
|
|
m_convRegTimerTable.erase(llId);
|
|
}
|
|
|
|
if (m_p25->m_sndcpSupport) {
|
|
// clock all the SNDCP ready timers
|
|
std::vector<uint32_t> sndcpReadyExpired = std::vector<uint32_t>();
|
|
for (auto entry : m_sndcpReadyTimers) {
|
|
uint32_t llId = entry.first;
|
|
|
|
m_sndcpReadyTimers[llId].clock(ms);
|
|
if (m_sndcpReadyTimers[llId].isRunning() && m_sndcpReadyTimers[llId].hasExpired()) {
|
|
sndcpReadyExpired.push_back(llId);
|
|
}
|
|
}
|
|
|
|
// clock all the SNDCP standby timers
|
|
std::vector<uint32_t> sndcpStandbyExpired = std::vector<uint32_t>();
|
|
for (auto entry : m_sndcpStandbyTimers) {
|
|
uint32_t llId = entry.first;
|
|
|
|
m_sndcpStandbyTimers[llId].clock(ms);
|
|
if (m_sndcpStandbyTimers[llId].isRunning() && m_sndcpStandbyTimers[llId].hasExpired()) {
|
|
sndcpStandbyExpired.push_back(llId);
|
|
}
|
|
}
|
|
|
|
// process and SNDCP enabled LLIDs
|
|
for (auto entry : m_sndcpStateTable) {
|
|
uint32_t llId = entry.first;
|
|
SNDCPState::E state = entry.second;
|
|
|
|
switch (state) {
|
|
case SNDCPState::CLOSED:
|
|
break;
|
|
case SNDCPState::IDLE:
|
|
{
|
|
if (m_p25->m_permittedDstId == llId) {
|
|
m_sndcpReadyTimers[llId].start();
|
|
m_sndcpStateTable[llId] = SNDCPState::READY_S;
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", SNDCP, llId = %u, state = %u", llId, (uint8_t)state);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case SNDCPState::READY_S:
|
|
{
|
|
// has the LLID reached ready state expiration?
|
|
if (std::find(sndcpReadyExpired.begin(), sndcpReadyExpired.end(), llId) != sndcpReadyExpired.end()) {
|
|
m_sndcpStateTable[llId] = SNDCPState::IDLE;
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_TDULC_STR ", CALL_TERM (Call Termination), llId = %u", llId);
|
|
}
|
|
|
|
std::unique_ptr<lc::TDULC> lc = std::make_unique<lc::tdulc::LC_CALL_TERM>();
|
|
lc->setDstId(llId);
|
|
m_p25->m_control->writeRF_TDULC(lc.get(), true);
|
|
for (uint8_t i = 0U; i < 8U; i++) {
|
|
m_p25->writeRF_TDU(true);
|
|
}
|
|
|
|
if (m_p25->m_notifyCC) {
|
|
m_p25->notifyCC_ReleaseGrant(llId);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case SNDCPState::STANDBY:
|
|
{
|
|
// has the LLID reached standby state expiration?
|
|
if (std::find(sndcpStandbyExpired.begin(), sndcpStandbyExpired.end(), llId) != sndcpStandbyExpired.end()) {
|
|
sndcpReset(llId);
|
|
}
|
|
}
|
|
break;
|
|
case SNDCPState::READY:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Helper to initialize the SNDCP state for a logical link ID. */
|
|
|
|
void Data::sndcpInitialize(uint32_t llId)
|
|
{
|
|
if (!isSNDCPInitialized(llId)) {
|
|
m_sndcpStateTable[llId] = SNDCPState::IDLE;
|
|
m_sndcpReadyTimers[llId] = Timer(1000U, SNDCP_READY_TIMEOUT);
|
|
m_sndcpStandbyTimers[llId] = Timer(1000U, SNDCP_STANDBY_TIMEOUT);
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", SNDCP, first initialize, llId = %u, state = %u", llId, (uint8_t)SNDCPState::IDLE);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Helper to determine if the logical link ID has been SNDCP initialized. */
|
|
|
|
bool Data::isSNDCPInitialized(uint32_t llId) const
|
|
{
|
|
// lookup dynamic affiliation table entry
|
|
if (m_sndcpStateTable.find(llId) != m_sndcpStateTable.end()) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Helper to reset the SNDCP state for a logical link ID. */
|
|
|
|
void Data::sndcpReset(uint32_t llId, bool callTerm)
|
|
{
|
|
if (isSNDCPInitialized(llId)) {
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", SNDCP, reset, llId = %u, state = %u", llId, (uint8_t)m_sndcpStateTable[llId]);
|
|
}
|
|
|
|
m_sndcpStateTable[llId] = SNDCPState::CLOSED;
|
|
m_sndcpReadyTimers[llId].stop();
|
|
m_sndcpStandbyTimers[llId].stop();
|
|
|
|
if (callTerm) {
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_TDULC_STR ", CALL_TERM (Call Termination), llId = %u", llId);
|
|
}
|
|
|
|
std::unique_ptr<lc::TDULC> lc = std::make_unique<lc::tdulc::LC_CALL_TERM>();
|
|
lc->setDstId(llId);
|
|
m_p25->m_control->writeRF_TDULC(lc.get(), true);
|
|
m_p25->writeRF_Preamble();
|
|
|
|
if (m_p25->m_notifyCC) {
|
|
m_p25->notifyCC_ReleaseGrant(llId);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// Private Class Members
|
|
// ---------------------------------------------------------------------------
|
|
|
|
/* Initializes a new instance of the Data class. */
|
|
|
|
Data::Data(Control* p25, bool dumpPDUData, bool repeatPDU, bool debug, bool verbose) :
|
|
m_p25(p25),
|
|
m_prevRfState(RS_RF_LISTENING),
|
|
m_rfData(nullptr),
|
|
m_rfDataHeader(),
|
|
m_rfExtendedAddress(false),
|
|
m_rfDataBlockCnt(0U),
|
|
m_rfPDU(nullptr),
|
|
m_rfPDUCount(0U),
|
|
m_rfPDUBits(0U),
|
|
m_netData(nullptr),
|
|
m_netDataHeader(),
|
|
m_netExtendedAddress(false),
|
|
m_netDataOffset(0U),
|
|
m_netDataBlockCnt(0U),
|
|
m_netPDU(nullptr),
|
|
m_netPDUCount(0U),
|
|
m_retryPDUData(nullptr),
|
|
m_retryPDUBitLength(0U),
|
|
m_retryCount(0U),
|
|
m_rfPduUserData(nullptr),
|
|
m_rfPduUserDataLength(0U),
|
|
m_netPduUserData(nullptr),
|
|
m_netPduUserDataLength(0U),
|
|
m_fneRegTable(),
|
|
m_convRegQueueTable(),
|
|
m_convRegTimerTable(),
|
|
m_sndcpStateTable(),
|
|
m_sndcpReadyTimers(),
|
|
m_sndcpStandbyTimers(),
|
|
m_inbound(false),
|
|
m_dumpPDUData(dumpPDUData),
|
|
m_repeatPDU(repeatPDU),
|
|
m_verbose(verbose),
|
|
m_debug(debug)
|
|
{
|
|
m_rfData = new data::DataBlock[P25_MAX_PDU_BLOCKS];
|
|
|
|
m_rfPDU = new uint8_t[P25_PDU_FRAME_LENGTH_BYTES + 2U];
|
|
::memset(m_rfPDU, 0x00U, P25_PDU_FRAME_LENGTH_BYTES + 2U);
|
|
|
|
m_netData = new data::DataBlock[P25_MAX_PDU_BLOCKS];
|
|
|
|
m_netPDU = new uint8_t[P25_PDU_FRAME_LENGTH_BYTES + 2U];
|
|
::memset(m_netPDU, 0x00U, P25_PDU_FRAME_LENGTH_BYTES + 2U);
|
|
|
|
m_rfPduUserData = new uint8_t[P25_MAX_PDU_BLOCKS * P25_PDU_CONFIRMED_LENGTH_BYTES + 2U];
|
|
::memset(m_rfPduUserData, 0x00U, P25_MAX_PDU_BLOCKS * P25_PDU_CONFIRMED_LENGTH_BYTES + 2U);
|
|
m_netPduUserData = new uint8_t[P25_MAX_PDU_BLOCKS * P25_PDU_CONFIRMED_LENGTH_BYTES + 2U];
|
|
::memset(m_netPduUserData, 0x00U, P25_MAX_PDU_BLOCKS * P25_PDU_CONFIRMED_LENGTH_BYTES + 2U);
|
|
|
|
m_fneRegTable.clear();
|
|
|
|
m_convRegQueueTable.clear();
|
|
m_convRegTimerTable.clear();
|
|
|
|
m_sndcpStateTable.clear();
|
|
m_sndcpReadyTimers.clear();
|
|
m_sndcpStandbyTimers.clear();
|
|
}
|
|
|
|
/* Finalizes a instance of the Data class. */
|
|
|
|
Data::~Data()
|
|
{
|
|
delete[] m_rfData;
|
|
delete[] m_netData;
|
|
delete[] m_rfPDU;
|
|
delete[] m_netPDU;
|
|
|
|
if (m_retryPDUData != nullptr)
|
|
delete m_retryPDUData;
|
|
|
|
delete[] m_rfPduUserData;
|
|
delete[] m_netPduUserData;
|
|
}
|
|
|
|
/* Helper used to process conventional data registration from PDU data. */
|
|
|
|
bool Data::processConvDataReg(const uint8_t* pduUserData)
|
|
{
|
|
uint8_t regType = (pduUserData[0U] >> 4) & 0x0F;
|
|
switch (regType) {
|
|
case PDURegType::CONNECT:
|
|
{
|
|
uint32_t llId = (pduUserData[1U] << 16) + (pduUserData[2U] << 8) + pduUserData[3U];
|
|
uint32_t ipAddr = (pduUserData[8U] << 24) + (pduUserData[9U] << 16) + (pduUserData[10U] << 8) + pduUserData[11U];
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", CONNECT (Registration Request Connect), llId = %u, ipAddr = %s", llId, __IP_FROM_UINT(ipAddr).c_str());
|
|
}
|
|
|
|
m_convRegQueueTable[llId] = ipAddr;
|
|
|
|
m_convRegTimerTable[llId] = Timer(1000U, 0U, CONV_REG_WAIT_TIMEOUT);
|
|
m_convRegTimerTable[llId].start();
|
|
|
|
// acknowledge
|
|
writeRF_PDU_Ack_Response(PDUAckClass::ACK, PDUAckType::ACK, 0U, llId);
|
|
}
|
|
break;
|
|
case PDURegType::DISCONNECT:
|
|
{
|
|
uint32_t llId = (pduUserData[1U] << 16) + (pduUserData[2U] << 8) + pduUserData[3U];
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", DISCONNECT (Registration Request Disconnect), llId = %u", llId);
|
|
}
|
|
|
|
// acknowledge
|
|
writeRF_PDU_Ack_Response(PDUAckClass::ACK, PDUAckType::ACK, 0U, llId);
|
|
|
|
if (hasLLIdFNEReg(llId)) {
|
|
// remove dynamic FNE registration table entry
|
|
try {
|
|
m_fneRegTable.at(llId);
|
|
m_fneRegTable.erase(llId);
|
|
}
|
|
catch (...) {
|
|
// stub
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
LogError(LOG_RF, "P25 unhandled PDU registration type, regType = $%02X", regType);
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Helper used to process SNDCP control data from PDU data. */
|
|
|
|
bool Data::processSNDCPControl(const uint8_t* pduUserData)
|
|
{
|
|
if (!m_p25->m_sndcpSupport) {
|
|
return false;
|
|
}
|
|
|
|
uint8_t txPduUserData[P25_MAX_PDU_BLOCKS * P25_PDU_UNCONFIRMED_LENGTH_BYTES];
|
|
::memset(txPduUserData, 0x00U, P25_MAX_PDU_BLOCKS * P25_PDU_UNCONFIRMED_LENGTH_BYTES);
|
|
|
|
std::unique_ptr<sndcp::SNDCPPacket> packet = SNDCPFactory::create(pduUserData);
|
|
if (packet == nullptr) {
|
|
LogWarning(LOG_RF, P25_PDU_STR ", undecodable SNDCP packet");
|
|
return false;
|
|
}
|
|
|
|
uint32_t llId = m_rfDataHeader.getLLId();
|
|
|
|
switch (packet->getPDUType()) {
|
|
case SNDCP_PDUType::ACT_TDS_CTX:
|
|
{
|
|
SNDCPCtxActRequest* isp = static_cast<SNDCPCtxActRequest*>(packet.get());
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", SNDCP context activation request, llId = %u, nsapi = %u, ipAddr = %s, nat = $%02X, dsut = $%02X, mdpco = $%02X", llId,
|
|
isp->getNSAPI(), __IP_FROM_UINT(isp->getIPAddress()).c_str(), isp->getNAT(), isp->getDSUT(), isp->getMDPCO());
|
|
}
|
|
|
|
m_p25->writeRF_Preamble();
|
|
|
|
DataHeader rspHeader = DataHeader();
|
|
rspHeader.setFormat(PDUFormatType::CONFIRMED);
|
|
rspHeader.setMFId(MFG_STANDARD);
|
|
rspHeader.setAckNeeded(true);
|
|
rspHeader.setOutbound(true);
|
|
rspHeader.setSAP(PDUSAP::SNDCP_CTRL_DATA);
|
|
rspHeader.setNs(m_rfDataHeader.getNs());
|
|
rspHeader.setLLId(llId);
|
|
rspHeader.setBlocksToFollow(1U);
|
|
|
|
if (!isSNDCPInitialized(llId)) {
|
|
std::unique_ptr<SNDCPCtxActReject> osp = std::make_unique<SNDCPCtxActReject>();
|
|
osp->setNSAPI(DEFAULT_NSAPI);
|
|
osp->setRejectCode(SNDCPRejectReason::SU_NOT_PROVISIONED);
|
|
|
|
osp->encode(txPduUserData);
|
|
|
|
rspHeader.calculateLength(2U);
|
|
writeRF_PDU_User(rspHeader, false, txPduUserData);
|
|
return true;
|
|
}
|
|
|
|
// which network address type is this?
|
|
switch (isp->getNAT()) {
|
|
case SNDCPNAT::IPV4_STATIC_ADDR:
|
|
{
|
|
std::unique_ptr<SNDCPCtxActReject> osp = std::make_unique<SNDCPCtxActReject>();
|
|
osp->setNSAPI(DEFAULT_NSAPI);
|
|
osp->setRejectCode(SNDCPRejectReason::STATIC_IP_ALLOCATION_UNSUPPORTED);
|
|
|
|
osp->encode(txPduUserData);
|
|
|
|
rspHeader.calculateLength(2U);
|
|
writeRF_PDU_User(rspHeader, false, txPduUserData);
|
|
|
|
sndcpReset(llId, true);
|
|
}
|
|
break;
|
|
|
|
case SNDCPNAT::IPV4_DYN_ADDR:
|
|
{
|
|
std::unique_ptr<SNDCPCtxActReject> osp = std::make_unique<SNDCPCtxActReject>();
|
|
osp->setNSAPI(DEFAULT_NSAPI);
|
|
osp->setRejectCode(SNDCPRejectReason::DYN_IP_ALLOCATION_UNSUPPORTED);
|
|
|
|
osp->encode(txPduUserData);
|
|
|
|
rspHeader.calculateLength(2U);
|
|
writeRF_PDU_User(rspHeader, false, txPduUserData);
|
|
|
|
sndcpReset(llId, true);
|
|
|
|
// TODO TODO TODO
|
|
/*
|
|
std::unique_ptr<SNDCPCtxActAccept> osp = std::make_unique<SNDCPCtxActAccept>();
|
|
osp->setNSAPI(DEFAULT_NSAPI);
|
|
osp->setReadyTimer(SNDCPReadyTimer::TEN_SECONDS);
|
|
osp->setStandbyTimer(SNDCPStandbyTimer::ONE_MINUTE);
|
|
osp->setNAT(SNDCPNAT::IPV4_DYN_ADDR);
|
|
osp->setIPAddress(__IP_FROM_STR(std::string("10.10.1.10")));
|
|
osp->setMTU(SNDCP_MTU_510);
|
|
osp->setMDPCO(isp->getMDPCO());
|
|
|
|
osp->encode(txPduUserData);
|
|
|
|
rspHeader.calculateLength(13U);
|
|
writeRF_PDU_User(rspHeader, rspHeader, false, txPduUserData);
|
|
|
|
m_sndcpStateTable[llId] = SNDCPState::STANDBY;
|
|
m_sndcpReadyTimers[llId].stop();
|
|
m_sndcpStandbyTimers[llId].start();
|
|
*/
|
|
}
|
|
break;
|
|
|
|
default:
|
|
{
|
|
std::unique_ptr<SNDCPCtxActReject> osp = std::make_unique<SNDCPCtxActReject>();
|
|
osp->setNSAPI(DEFAULT_NSAPI);
|
|
osp->setRejectCode(SNDCPRejectReason::ANY_REASON);
|
|
|
|
osp->encode(txPduUserData);
|
|
|
|
rspHeader.calculateLength(2U);
|
|
writeRF_PDU_User(rspHeader, false, txPduUserData);
|
|
|
|
sndcpReset(llId, true);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case SNDCP_PDUType::DEACT_TDS_CTX_REQ:
|
|
{
|
|
SNDCPCtxDeactivation* isp = static_cast<SNDCPCtxDeactivation*>(packet.get());
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", SNDCP context deactivation request, llId = %u, deactType = %02X", llId,
|
|
isp->getDeactType());
|
|
}
|
|
|
|
writeRF_PDU_Ack_Response(PDUAckClass::ACK, PDUAckType::ACK, 0U, llId);
|
|
sndcpReset(llId, true);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
{
|
|
LogError(LOG_RF, P25_PDU_STR ", unhandled SNDCP PDU Type, pduType = $%02X", packet->getPDUType());
|
|
sndcpReset(llId, true);
|
|
}
|
|
break;
|
|
} // switch (packet->getPDUType())
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Write data processed from RF to the network. */
|
|
|
|
void Data::writeNetwork(const uint8_t currentBlock, const uint8_t *data, uint32_t len, bool lastBlock)
|
|
{
|
|
assert(data != nullptr);
|
|
|
|
if (m_p25->m_network == nullptr)
|
|
return;
|
|
|
|
if (m_p25->m_rfTimeout.isRunning() && m_p25->m_rfTimeout.hasExpired())
|
|
return;
|
|
|
|
m_p25->m_network->writeP25PDU(m_rfDataHeader, currentBlock, data, len, lastBlock);
|
|
}
|
|
|
|
/* Helper to write a P25 PDU packet. */
|
|
|
|
void Data::writeRF_PDU(const uint8_t* pdu, uint32_t bitLength, bool noNulls, bool imm, bool ackRetry)
|
|
{
|
|
assert(pdu != nullptr);
|
|
assert(bitLength > 0U);
|
|
|
|
m_p25->writeRF_Preamble();
|
|
|
|
if (!ackRetry) {
|
|
if (m_retryPDUData != nullptr)
|
|
delete m_retryPDUData;
|
|
|
|
// store PDU for ACK RETRY logic
|
|
m_retryCount = 0U;
|
|
m_retryPDUBitLength = bitLength;
|
|
uint32_t retryByteLength = bitLength / 8U;
|
|
if ((retryByteLength % 8U) > 0U)
|
|
retryByteLength++;
|
|
|
|
m_retryPDUData = new uint8_t[retryByteLength];
|
|
::memcpy(m_retryPDUData, pdu, retryByteLength);
|
|
} else {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, ack retry, bitLength = %u",
|
|
m_retryPDUBitLength);
|
|
}
|
|
|
|
uint8_t data[P25_PDU_FRAME_LENGTH_BYTES + 2U];
|
|
::memset(data, 0x00U, P25_PDU_FRAME_LENGTH_BYTES + 2U);
|
|
|
|
// Add the data
|
|
uint32_t newBitLength = P25Utils::encode(pdu, data + 2U, bitLength);
|
|
uint32_t newByteLength = newBitLength / 8U;
|
|
if ((newBitLength % 8U) > 0U)
|
|
newByteLength++;
|
|
|
|
// Regenerate Sync
|
|
Sync::addP25Sync(data + 2U);
|
|
|
|
// Regenerate NID
|
|
m_p25->m_nid.encode(data + 2U, DUID::PDU);
|
|
|
|
// Add status bits
|
|
P25Utils::addStatusBits(data + 2U, newBitLength, false);
|
|
P25Utils::addIdleStatusBits(data + 2U, newBitLength);
|
|
|
|
// Set first busy bits to 1,1
|
|
P25Utils::setStatusBits(data + 2U, P25_SS0_START, true, true);
|
|
|
|
if (m_p25->m_duplex) {
|
|
data[0U] = modem::TAG_DATA;
|
|
data[1U] = 0x00U;
|
|
|
|
m_p25->addFrame(data, newByteLength + 2U, false, imm);
|
|
}
|
|
|
|
// add trailing null pad; only if control data isn't being transmitted
|
|
if (!m_p25->m_ccRunning && !noNulls) {
|
|
m_p25->writeRF_Nulls();
|
|
}
|
|
}
|
|
|
|
/* Helper to write a network P25 PDU packet. */
|
|
|
|
void Data::writeNet_PDU_Buffered()
|
|
{
|
|
uint32_t bitLength = ((m_netDataHeader.getBlocksToFollow() + 1U) * P25_PDU_FEC_LENGTH_BITS) + P25_PREAMBLE_LENGTH_BITS;
|
|
uint32_t offset = P25_PREAMBLE_LENGTH_BITS;
|
|
|
|
UInt8Array __data = std::make_unique<uint8_t[]>((bitLength / 8U) + 1U);
|
|
uint8_t* data = __data.get();
|
|
|
|
::memset(data, 0x00U, bitLength / 8U);
|
|
uint8_t block[P25_PDU_FEC_LENGTH_BYTES];
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
uint32_t blocksToFollow = m_netDataHeader.getBlocksToFollow();
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", OSP, ack = %u, outbound = %u, fmt = $%02X, mfId = $%02X, sap = $%02X, fullMessage = %u, blocksToFollow = %u, padLength = %u, n = %u, seqNo = %u, lastFragment = %u, hdrOffset = %u, bitLength = %u, llId = %u",
|
|
m_netDataHeader.getAckNeeded(), m_netDataHeader.getOutbound(), m_netDataHeader.getFormat(), m_netDataHeader.getMFId(), m_netDataHeader.getSAP(), m_netDataHeader.getFullMessage(),
|
|
m_netDataHeader.getBlocksToFollow(), m_netDataHeader.getPadLength(), m_netDataHeader.getNs(), m_netDataHeader.getFSN(), m_netDataHeader.getLastFragment(),
|
|
m_netDataHeader.getHeaderOffset(), bitLength, m_netDataHeader.getLLId());
|
|
}
|
|
|
|
// generate the PDU header and 1/2 rate Trellis
|
|
m_netDataHeader.encode(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
|
|
if (blocksToFollow > 0U) {
|
|
uint32_t dataOffset = 0U;
|
|
|
|
// generate the second PDU header
|
|
if ((m_netDataHeader.getFormat() == PDUFormatType::UNCONFIRMED) && (m_netDataHeader.getSAP() == PDUSAP::EXT_ADDR) && m_netExtendedAddress) {
|
|
m_netDataHeader.encodeExtAddr(m_netPduUserData, true);
|
|
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
m_netDataHeader.encodeExtAddr(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
|
|
bitLength += P25_PDU_FEC_LENGTH_BITS;
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
dataOffset += P25_PDU_HEADER_LENGTH_BYTES;
|
|
|
|
blocksToFollow--;
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", OSP, extended address, sap = $%02X, srcLlId = %u",
|
|
m_netDataHeader.getEXSAP(), m_netDataHeader.getSrcLLId());
|
|
}
|
|
}
|
|
|
|
// are we processing extended address data from the first block?
|
|
if ((m_netDataHeader.getFormat() == PDUFormatType::CONFIRMED) && (m_netDataHeader.getSAP() == PDUSAP::EXT_ADDR) && m_netExtendedAddress) {
|
|
m_netDataHeader.encodeExtAddr(m_netPduUserData);
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", OSP, extended address, sap = $%02X, srcLlId = %u",
|
|
m_netDataHeader.getEXSAP(), m_netDataHeader.getSrcLLId());
|
|
}
|
|
}
|
|
|
|
edac::CRC::addCRC32(m_netPduUserData, m_netPduUserDataLength);
|
|
|
|
if (m_dumpPDUData) {
|
|
Utils::dump("OSP PDU User Data (NET)", m_netPduUserData, m_netPduUserDataLength);
|
|
}
|
|
|
|
// generate the PDU data
|
|
for (uint32_t i = 0U; i < blocksToFollow; i++) {
|
|
m_netData[i].setFormat(m_netDataHeader);
|
|
m_netData[i].setSerialNo(i);
|
|
m_netData[i].setData(m_netPduUserData + dataOffset);
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_NET, P25_PDU_STR ", OSP, block %u, fmt = $%02X, lastBlock = %u",
|
|
(m_netDataHeader.getFormat() == PDUFormatType::CONFIRMED) ? m_netData[i].getSerialNo() : i, m_netData[i].getFormat(),
|
|
m_netData[i].getLastBlock());
|
|
}
|
|
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
m_netData[i].encode(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
dataOffset += (m_netDataHeader.getFormat() == PDUFormatType::CONFIRMED) ? P25_PDU_CONFIRMED_DATA_LENGTH_BYTES : P25_PDU_UNCONFIRMED_LENGTH_BYTES;
|
|
}
|
|
}
|
|
|
|
writeRF_PDU(data, bitLength);
|
|
}
|
|
|
|
/* Helper to re-write a received P25 PDU packet. */
|
|
|
|
void Data::writeRF_PDU_Buffered()
|
|
{
|
|
uint32_t bitLength = ((m_rfDataHeader.getBlocksToFollow() + 1U) * P25_PDU_FEC_LENGTH_BITS) + P25_PREAMBLE_LENGTH_BITS;
|
|
uint32_t offset = P25_PREAMBLE_LENGTH_BITS;
|
|
|
|
UInt8Array __data = std::make_unique<uint8_t[]>((bitLength / 8U) + 1U);
|
|
uint8_t* data = __data.get();
|
|
|
|
::memset(data, 0x00U, bitLength / 8U);
|
|
uint8_t block[P25_PDU_FEC_LENGTH_BYTES];
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
uint32_t blocksToFollow = m_rfDataHeader.getBlocksToFollow();
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, ack = %u, outbound = %u, fmt = $%02X, mfId = $%02X, sap = $%02X, fullMessage = %u, blocksToFollow = %u, padLength = %u, n = %u, seqNo = %u, lastFragment = %u, hdrOffset = %u, bitLength = %u, llId = %u",
|
|
m_rfDataHeader.getAckNeeded(), m_rfDataHeader.getOutbound(), m_rfDataHeader.getFormat(), m_rfDataHeader.getMFId(), m_rfDataHeader.getSAP(), m_rfDataHeader.getFullMessage(),
|
|
m_rfDataHeader.getBlocksToFollow(), m_rfDataHeader.getPadLength(), m_rfDataHeader.getNs(), m_rfDataHeader.getFSN(), m_rfDataHeader.getLastFragment(),
|
|
m_rfDataHeader.getHeaderOffset(), bitLength, m_rfDataHeader.getLLId());
|
|
}
|
|
|
|
// generate the PDU header and 1/2 rate Trellis
|
|
m_rfDataHeader.encode(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
|
|
if (blocksToFollow > 0U) {
|
|
uint32_t dataOffset = 0U;
|
|
|
|
// generate the second PDU header
|
|
if ((m_rfDataHeader.getFormat() == PDUFormatType::UNCONFIRMED) && (m_rfDataHeader.getSAP() == PDUSAP::EXT_ADDR) && m_rfExtendedAddress) {
|
|
m_rfDataHeader.encodeExtAddr(m_rfPduUserData, true);
|
|
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
m_rfDataHeader.encodeExtAddr(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
|
|
bitLength += P25_PDU_FEC_LENGTH_BITS;
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
dataOffset += P25_PDU_HEADER_LENGTH_BYTES;
|
|
|
|
blocksToFollow--;
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, extended address, sap = $%02X, srcLlId = %u",
|
|
m_rfDataHeader.getEXSAP(), m_rfDataHeader.getSrcLLId());
|
|
}
|
|
}
|
|
|
|
// are we processing extended address data from the first block?
|
|
if ((m_rfDataHeader.getFormat() == PDUFormatType::CONFIRMED) && (m_rfDataHeader.getSAP() == PDUSAP::EXT_ADDR) && m_rfExtendedAddress) {
|
|
m_rfDataHeader.encodeExtAddr(m_rfPduUserData);
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, extended address, sap = $%02X, srcLlId = %u",
|
|
m_rfDataHeader.getEXSAP(), m_rfDataHeader.getSrcLLId());
|
|
}
|
|
}
|
|
|
|
edac::CRC::addCRC32(m_rfPduUserData, m_rfPduUserDataLength);
|
|
|
|
if (m_dumpPDUData) {
|
|
Utils::dump("OSP PDU User Data (RF)", m_rfPduUserData, m_rfPduUserDataLength);
|
|
}
|
|
|
|
// generate the PDU data
|
|
for (uint32_t i = 0U; i < blocksToFollow; i++) {
|
|
m_rfData[i].setFormat(m_rfDataHeader);
|
|
m_rfData[i].setSerialNo(i);
|
|
m_rfData[i].setData(m_rfPduUserData + dataOffset);
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, block %u, fmt = $%02X, lastBlock = %u",
|
|
(m_rfDataHeader.getFormat() == PDUFormatType::CONFIRMED) ? m_rfData[i].getSerialNo() : i, m_rfData[i].getFormat(),
|
|
m_rfData[i].getLastBlock());
|
|
}
|
|
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
m_rfData[i].encode(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
|
|
offset += P25_PDU_FEC_LENGTH_BITS;
|
|
dataOffset += (m_rfDataHeader.getFormat() == PDUFormatType::CONFIRMED) ? P25_PDU_CONFIRMED_DATA_LENGTH_BYTES : P25_PDU_UNCONFIRMED_LENGTH_BYTES;
|
|
}
|
|
}
|
|
|
|
writeRF_PDU(data, bitLength);
|
|
}
|
|
|
|
/* Helper to write a PDU registration response. */
|
|
|
|
void Data::writeRF_PDU_Reg_Response(uint8_t regType, uint32_t llId, uint32_t ipAddr)
|
|
{
|
|
if ((regType != PDURegType::ACCEPT) && (regType != PDURegType::DENY))
|
|
return;
|
|
|
|
uint8_t pduUserData[P25_MAX_PDU_BLOCKS * P25_PDU_UNCONFIRMED_LENGTH_BYTES];
|
|
::memset(pduUserData, 0x00U, P25_MAX_PDU_BLOCKS * P25_PDU_UNCONFIRMED_LENGTH_BYTES);
|
|
|
|
DataHeader rspHeader = DataHeader();
|
|
rspHeader.setFormat(PDUFormatType::CONFIRMED);
|
|
rspHeader.setAckNeeded(true);
|
|
rspHeader.setOutbound(true);
|
|
rspHeader.setSAP(PDUSAP::CONV_DATA_REG);
|
|
rspHeader.setLLId(llId);
|
|
rspHeader.setBlocksToFollow(1U);
|
|
|
|
pduUserData[0U] = ((regType & 0x0FU) << 4); // Registration Type & Options
|
|
pduUserData[1U] = (llId >> 16) & 0xFFU; // Logical Link ID
|
|
pduUserData[2U] = (llId >> 8) & 0xFFU;
|
|
pduUserData[3U] = (llId >> 0) & 0xFFU;
|
|
if (regType == PDURegType::ACCEPT) {
|
|
pduUserData[8U] = (ipAddr >> 24) & 0xFFU; // IP Address
|
|
pduUserData[9U] = (ipAddr >> 16) & 0xFFU;
|
|
pduUserData[10U] = (ipAddr >> 8) & 0xFFU;
|
|
pduUserData[11U] = (ipAddr >> 0) & 0xFFU;
|
|
}
|
|
|
|
rspHeader.calculateLength(12U);
|
|
writeRF_PDU_User(rspHeader, false, pduUserData);
|
|
}
|
|
|
|
/* Helper to write a PDU acknowledge response. */
|
|
|
|
void Data::writeRF_PDU_Ack_Response(uint8_t ackClass, uint8_t ackType, uint8_t ackStatus, uint32_t llId, uint32_t srcLlId, bool noNulls)
|
|
{
|
|
if (ackClass == PDUAckClass::ACK && ackType != PDUAckType::ACK)
|
|
return;
|
|
|
|
uint32_t bitLength = (1U * P25_PDU_FEC_LENGTH_BITS) + P25_PREAMBLE_LENGTH_BITS;
|
|
uint32_t offset = P25_PREAMBLE_LENGTH_BITS;
|
|
|
|
UInt8Array __data = std::make_unique<uint8_t[]>((bitLength / 8U) + 1U);
|
|
uint8_t* data = __data.get();
|
|
|
|
::memset(data, 0x00U, bitLength / 8U);
|
|
uint8_t block[P25_PDU_FEC_LENGTH_BYTES];
|
|
::memset(block, 0x00U, P25_PDU_FEC_LENGTH_BYTES);
|
|
|
|
DataHeader rspHeader = DataHeader();
|
|
rspHeader.setFormat(PDUFormatType::RSP);
|
|
rspHeader.setMFId(m_rfDataHeader.getMFId());
|
|
rspHeader.setOutbound(true);
|
|
rspHeader.setResponseClass(ackClass);
|
|
rspHeader.setResponseType(ackType);
|
|
rspHeader.setResponseStatus(ackStatus);
|
|
rspHeader.setLLId(llId);
|
|
if (m_rfDataHeader.getSAP() == PDUSAP::EXT_ADDR) {
|
|
rspHeader.setSrcLLId(srcLlId);
|
|
rspHeader.setFullMessage(false);
|
|
}
|
|
else {
|
|
rspHeader.setFullMessage(true);
|
|
}
|
|
rspHeader.setBlocksToFollow(0U);
|
|
|
|
// Generate the PDU header and 1/2 rate Trellis
|
|
rspHeader.encode(block);
|
|
Utils::setBitRange(block, data, offset, P25_PDU_FEC_LENGTH_BITS);
|
|
|
|
if (m_verbose) {
|
|
LogMessage(LOG_RF, P25_PDU_STR ", OSP, response, ackClass = $%02X, ackType = $%02X, llId = %u, srcLLId = %u",
|
|
rspHeader.getResponseClass(), rspHeader.getResponseType(), rspHeader.getLLId(), rspHeader.getSrcLLId());
|
|
}
|
|
|
|
writeRF_PDU(data, bitLength, noNulls);
|
|
}
|