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freeswitch/libs/spandsp/tests/hdlc_tests.c

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/*
* SpanDSP - a series of DSP components for telephony
*
* hdlc_tests.c
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2003 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: hdlc_tests.c,v 1.43 2008/05/13 13:17:25 steveu Exp $
*/
/*! \file */
/*! \page hdlc_tests_page HDLC tests
\section hdlc_tests_page_sec_1 What does it do?
The HDLC tests exercise the HDLC module, and verifies correct operation
using both 16 and 32 bit CRCs.
*/
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "spandsp.h"
int ref_len;
uint8_t buf[1000];
int abort_reported;
int frame_handled;
int frame_failed;
int frame_len_errors;
int frame_data_errors;
int underflow_reported;
int framing_ok_reported;
int framing_ok_reports;
hdlc_rx_state_t rx;
hdlc_tx_state_t tx;
int frames_sent;
int bytes_sent;
uint64_t start;
uint64_t end;
/* Use a local random generator, so the results are consistent across platforms. We have hard coded
correct results for a message sequence generated by this particular PRNG. */
static int my_rand(void)
{
static int rndnum = 1234567;
return (rndnum = 1664525U*rndnum + 1013904223U) >> 8;
}
/*- End of function --------------------------------------------------------*/
static int cook_up_msg(uint8_t *buf)
{
int i;
int len;
/* Use medium length messages, with some randomised length variation. */
/* TODO: this doesn't exercise extremely short or long messages. */
len = (my_rand() & 0x3F) + 100;
for (i = 0; i < len; i++)
buf[i] = my_rand();
return len;
}
/*- End of function --------------------------------------------------------*/
static void frame_handler(void *user_data, const uint8_t *pkt, int len, int ok)
{
if (len < 0)
{
/* Special conditions */
switch (len)
{
case PUTBIT_TRAINING_IN_PROGRESS:
printf("Training in progress\n");
break;
case PUTBIT_TRAINING_FAILED:
printf("Training failed\n");
break;
case PUTBIT_TRAINING_SUCCEEDED:
printf("Training succeeded\n");
break;
case PUTBIT_CARRIER_UP:
printf("Carrier up\n");
break;
case PUTBIT_CARRIER_DOWN:
printf("Carrier down\n");
break;
case PUTBIT_FRAMING_OK:
framing_ok_reported = TRUE;
framing_ok_reports++;
//printf("Framing OK\n");
break;
case PUTBIT_END_OF_DATA:
printf("End of data\n");
break;
case PUTBIT_ABORT:
abort_reported = TRUE;
//printf("Abort\n");
break;
case PUTBIT_BREAK:
printf("Break\n");
break;
case PUTBIT_OCTET_REPORT:
printf("Octet report\n");
break;
default:
printf("Eh!\n");
break;
}
return;
}
if (ok)
{
if (len != ref_len)
{
printf("Len error - %d %d\n", len, ref_len);
frame_len_errors++;
return;
}
if (memcmp(pkt, buf, len))
{
printf("Frame data error\n");
frame_data_errors++;
return;
}
frame_handled = TRUE;
}
else
{
frame_failed = TRUE;
}
}
/*- End of function --------------------------------------------------------*/
static void underflow_handler(void *user_data)
{
//printf("Underflow reported\n");
underflow_reported = TRUE;
}
/*- End of function --------------------------------------------------------*/
static void check_result(void)
{
hdlc_rx_stats_t rx_stats;
hdlc_rx_get_stats(&rx, &rx_stats);
printf("%lu bytes\n", rx_stats.bytes);
printf("%lu good frames\n", rx_stats.good_frames);
printf("%lu CRC errors\n", rx_stats.crc_errors);
printf("%lu length errors\n", rx_stats.length_errors);
printf("%lu aborts\n", rx_stats.aborts);
printf("%d frame length errors\n", frame_len_errors);
printf("%d frame data errors\n", frame_data_errors);
printf("Test duration %" PRIu64 " ticks\n", end - start);
if (rx_stats.bytes != bytes_sent
||
rx_stats.good_frames != frames_sent
||
rx_stats.crc_errors != 0
||
rx_stats.length_errors != 0
||
rx_stats.aborts != 0
||
frame_len_errors != 0
||
frame_data_errors != 0)
{
printf("Tests failed.\n");
exit(2);
}
printf("Test passed.\n\n");
}
/*- End of function --------------------------------------------------------*/
static int test_hdlc_modes(void)
{
int i;
int j;
int len;
int nextbyte;
int progress;
int progress_delay;
uint8_t bufx[100];
/* Try sending HDLC messages with CRC-16 */
printf("Testing with CRC-16 (byte by byte)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, FALSE, 1, FALSE, underflow_handler, NULL);
hdlc_rx_init(&rx, FALSE, FALSE, 5, frame_handler, NULL);
underflow_reported = FALSE;
start = rdtscll();
hdlc_tx_flags(&tx, 40);
/* Push an initial message so we should NOT get an underflow after the preamble. */
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
frame_handled = FALSE;
frame_failed = FALSE;
frames_sent = 0;
bytes_sent = 0;
for (i = 0; i < 1000000; i++)
{
nextbyte = hdlc_tx_get_byte(&tx);
hdlc_rx_put_byte(&rx, nextbyte);
if (underflow_reported)
{
underflow_reported = FALSE;
nextbyte = hdlc_tx_get_byte(&tx);
hdlc_rx_put_byte(&rx, nextbyte);
frames_sent++;
bytes_sent += ref_len;
if (!frame_handled)
{
printf("Frame not received.\n");
return -1;
}
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
frame_handled = FALSE;
}
}
end = rdtscll();
check_result();
/* Now try sending HDLC messages with CRC-16 */
printf("Testing with CRC-16 (chunk by chunk)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, FALSE, 1, FALSE, underflow_handler, NULL);
hdlc_rx_init(&rx, FALSE, FALSE, 5, frame_handler, NULL);
underflow_reported = FALSE;
start = rdtscll();
hdlc_tx_flags(&tx, 40);
/* Push an initial message so we should NOT get an underflow after the preamble. */
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
frame_handled = FALSE;
frame_failed = FALSE;
frames_sent = 0;
bytes_sent = 0;
for (i = 0; i < 10000; i++)
{
len = hdlc_tx_get(&tx, bufx, 100);
hdlc_rx_put(&rx, bufx, len);
if (underflow_reported)
{
underflow_reported = FALSE;
len = hdlc_tx_get(&tx, bufx, 100);
hdlc_rx_put(&rx, bufx, len);
frames_sent++;
bytes_sent += ref_len;
if (!frame_handled)
{
printf("Frame not received.\n");
return -1;
}
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
frame_handled = FALSE;
}
}
end = rdtscll();
check_result();
/* Now try sending HDLC messages with CRC-16 bit by bit */
printf("Testing with CRC-16 (bit by bit)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, FALSE, 2, FALSE, underflow_handler, NULL);
hdlc_rx_init(&rx, FALSE, FALSE, 5, frame_handler, NULL);
underflow_reported = FALSE;
start = rdtscll();
hdlc_tx_flags(&tx, 40);
/* Don't push an initial message so we should get an underflow after the preamble. */
/* Lie for the first message, as there isn't really one */
frame_handled = TRUE;
frame_failed = FALSE;
frames_sent = 0;
bytes_sent = 0;
ref_len = 0;
for (i = 0; i < 8*1000000; i++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (underflow_reported)
{
underflow_reported = FALSE;
for (j = 0; j < 20; j++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
}
if (ref_len)
{
frames_sent++;
bytes_sent += ref_len;
}
if (!frame_handled)
{
printf("Frame not received.\n");
return -1;
}
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
frame_handled = FALSE;
}
}
end = rdtscll();
check_result();
/* Now try sending HDLC messages with CRC-32 */
printf("Testing with CRC-32 (byte by byte)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, TRUE, 1, FALSE, underflow_handler, NULL);
hdlc_rx_init(&rx, TRUE, FALSE, 1, frame_handler, NULL);
underflow_reported = FALSE;
start = rdtscll();
hdlc_tx_flags(&tx, 40);
/* Don't push an initial message so we should get an underflow after the preamble. */
/* Lie for the first message, as there isn't really one */
frame_handled = TRUE;
frame_failed = FALSE;
frames_sent = 0;
bytes_sent = 0;
ref_len = 0;
for (i = 0; i < 1000000; i++)
{
nextbyte = hdlc_tx_get_byte(&tx);
hdlc_rx_put_byte(&rx, nextbyte);
if (underflow_reported)
{
underflow_reported = FALSE;
nextbyte = hdlc_tx_get_byte(&tx);
hdlc_rx_put_byte(&rx, nextbyte);
if (ref_len)
{
frames_sent++;
bytes_sent += ref_len;
}
if (!frame_handled)
{
printf("Frame not received.\n");
return -1;
}
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
frame_handled = FALSE;
}
}
end = rdtscll();
check_result();
/* Now try progressive mode with CRC-16 */
printf("Testing progressive mode with CRC-16 (byte by byte)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, TRUE, 1, TRUE, underflow_handler, NULL);
hdlc_rx_init(&rx, TRUE, FALSE, 1, frame_handler, NULL);
underflow_reported = FALSE;
start = rdtscll();
hdlc_tx_flags(&tx, 40);
/* Don't push an initial message so we should get an underflow after the preamble. */
/* Lie for the first message, as there isn't really one */
frame_handled = TRUE;
frame_failed = FALSE;
progress = 9999;
progress_delay = 9999;
frames_sent = 0;
bytes_sent = 0;
ref_len = 0;
for (i = 0; i < 1000000; i++)
{
nextbyte = hdlc_tx_get_byte(&tx);
hdlc_rx_put_byte(&rx, nextbyte);
if (underflow_reported)
{
underflow_reported = FALSE;
nextbyte = hdlc_tx_get_byte(&tx);
hdlc_rx_put_byte(&rx, nextbyte);
if (ref_len)
{
frames_sent++;
bytes_sent += ref_len;
}
if (!frame_handled)
{
printf("Frame not received.\n");
return -1;
}
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, 10);
progress = 10;
progress_delay = 8;
frame_handled = FALSE;
}
if (progress < ref_len && progress_delay-- <= 0)
{
if (hdlc_tx_frame(&tx, buf + progress, (progress + 10 <= ref_len) ? 10 : ref_len - progress) < 0)
{
printf("Failed to add progressively\n");
return -1;
}
progress += 10;
progress_delay = 8;
}
}
end = rdtscll();
check_result();
printf("Tests passed.\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
static int test_hdlc_frame_length_error_handling(void)
{
int i;
int j;
int nextbyte;
printf("Testing frame length error handling using CRC-16 (bit by bit)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, FALSE, 2, FALSE, underflow_handler, NULL);
hdlc_rx_init(&rx, FALSE, TRUE, 5, frame_handler, NULL);
hdlc_rx_set_max_frame_len(&rx, 100);
underflow_reported = FALSE;
framing_ok_reported = FALSE;
framing_ok_reports = 0;
hdlc_tx_flags(&tx, 10);
/* Don't push an initial message so we should get an underflow after the preamble. */
/* Lie for the first message, as there isn't really one */
frame_handled = TRUE;
frame_failed = FALSE;
frames_sent = 0;
bytes_sent = 0;
ref_len = 0;
for (i = 0; i < 8*1000000; i++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (framing_ok_reported)
{
printf("Framing OK reported at bit %d (%d)\n", i, framing_ok_reports);
framing_ok_reported = FALSE;
}
if (underflow_reported)
{
underflow_reported = FALSE;
for (j = 0; j < 20; j++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (framing_ok_reported)
{
printf("Framing OK reported at bit %d (%d) - %d\n", i, framing_ok_reports, frame_handled);
framing_ok_reported = FALSE;
}
}
if (ref_len)
{
frames_sent++;
bytes_sent += ref_len;
}
if (!frame_handled)
{
/* We should get a failure when the length reaches 101 */
if (ref_len == 101)
{
printf("Tests passed.\n");
return 0;
}
if (frame_failed)
printf("Frame failed.\n");
printf("Frame not received at length %d.\n", ref_len);
return -1;
}
else
{
/* We should get a failure when the length reaches 101 */
if (ref_len > 100)
{
printf("Tests failed.\n");
return -1;
}
}
ref_len++;
hdlc_tx_frame(&tx, buf, ref_len);
frame_handled = FALSE;
}
}
/* We shouldn't reach here */
printf("Tests failed.\n");
return -1;
}
/*- End of function --------------------------------------------------------*/
static int test_hdlc_crc_error_handling(void)
{
int i;
int j;
int nextbyte;
int corrupt;
printf("Testing CRC error handling using CRC-16 (bit by bit)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, FALSE, 2, FALSE, underflow_handler, NULL);
hdlc_rx_init(&rx, FALSE, TRUE, 5, frame_handler, NULL);
underflow_reported = FALSE;
framing_ok_reported = FALSE;
framing_ok_reports = 0;
hdlc_tx_flags(&tx, 10);
/* Don't push an initial message so we should get an underflow after the preamble. */
/* Lie for the first message, as there isn't really one */
frame_handled = TRUE;
frame_failed = FALSE;
frames_sent = 0;
bytes_sent = 0;
ref_len = 100;
corrupt = FALSE;
for (i = 0; i < 8*1000000; i++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (framing_ok_reported)
{
printf("Framing OK reported at bit %d (%d)\n", i, framing_ok_reports);
framing_ok_reported = FALSE;
}
if (underflow_reported)
{
underflow_reported = FALSE;
for (j = 0; j < 20; j++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (framing_ok_reported)
{
printf("Framing OK reported at bit %d (%d) - %d\n", i, framing_ok_reports, frame_handled);
framing_ok_reported = FALSE;
}
}
if (ref_len)
{
frames_sent++;
bytes_sent += ref_len;
}
if (!frame_handled)
{
if (!corrupt)
{
printf("Frame not received when it should be correct.\n");
return -1;
}
}
else
{
if (corrupt)
{
printf("Frame received when it should be corrupt.\n");
return -1;
}
}
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
if ((corrupt = rand() & 1))
hdlc_tx_corrupt_frame(&tx);
frame_handled = FALSE;
}
}
printf("Tests passed.\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
static int test_hdlc_abort_handling(void)
{
int i;
int j;
int nextbyte;
int abort;
printf("Testing abort handling using CRC-16 (bit by bit)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, FALSE, 2, FALSE, underflow_handler, NULL);
hdlc_rx_init(&rx, FALSE, TRUE, 0, frame_handler, NULL);
underflow_reported = FALSE;
framing_ok_reported = FALSE;
framing_ok_reports = 0;
hdlc_tx_flags(&tx, 10);
/* Don't push an initial message so we should get an underflow after the preamble. */
/* Lie for the first message, as there isn't really one */
frame_handled = TRUE;
frame_failed = FALSE;
frames_sent = 0;
bytes_sent = 0;
ref_len = 0;
abort = FALSE;
abort_reported = FALSE;
for (i = 0; i < 8*1000000; i++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (framing_ok_reported)
{
printf("Framing OK reported at bit %d (%d)\n", i, framing_ok_reports);
framing_ok_reported = FALSE;
}
if (underflow_reported)
{
underflow_reported = FALSE;
for (j = 0; j < 20; j++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (framing_ok_reported)
{
printf("Framing OK reported at bit %d (%d) - %d\n", i, framing_ok_reports, frame_handled);
framing_ok_reported = FALSE;
}
}
if (ref_len)
{
frames_sent++;
bytes_sent += ref_len;
}
if (abort)
{
if (abort && !abort_reported)
{
printf("Abort not received when sent\n");
return -1;
}
if (frame_handled)
{
if (frame_failed)
printf("Frame failed.\n");
printf("Frame received when abort sent.\n");
return -1;
}
}
else
{
if (abort_reported)
{
printf("Abort received when not sent\n");
return -1;
}
if (!frame_handled)
{
if (frame_failed)
printf("Frame failed.\n");
printf("Frame not received.\n");
return -1;
}
}
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
if ((abort = rand() & 1))
hdlc_tx_abort(&tx);
frame_handled = FALSE;
abort_reported = FALSE;
}
}
printf("Tests passed.\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
#if 0
static int test_hdlc_octet_count_handling(void)
{
int i;
int j;
int nextbyte;
printf("Testing the octet_counting handling using CRC-16 (bit by bit)\n");
frame_len_errors = 0;
frame_data_errors = 0;
hdlc_tx_init(&tx, FALSE, 2, FALSE, underflow_handler, NULL);
hdlc_rx_init(&rx, FALSE, TRUE, 0, frame_handler, NULL);
//hdlc_rx_set_max_frame_len(&rx, 50);
hdlc_rx_set_octet_counting_report_interval(&rx, 16);
underflow_reported = FALSE;
framing_ok_reported = FALSE;
framing_ok_reports = 0;
hdlc_tx_flags(&tx, 10);
/* Don't push an initial message so we should get an underflow after the preamble. */
/* Lie for the first message, as there isn't really one */
frame_handled = TRUE;
frame_failed = FALSE;
frames_sent = 0;
bytes_sent = 0;
ref_len = 0;
for (i = 0; i < 8*1000000; i++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (framing_ok_reported)
{
printf("Framing OK reported at bit %d (%d)\n", i, framing_ok_reports);
framing_ok_reported = FALSE;
}
if (underflow_reported)
{
underflow_reported = FALSE;
for (j = 0; j < 20; j++)
{
nextbyte = hdlc_tx_get_bit(&tx);
hdlc_rx_put_bit(&rx, nextbyte);
if (framing_ok_reported)
{
printf("Framing OK reported at bit %d (%d) - %d\n", i, framing_ok_reports, frame_handled);
framing_ok_reported = FALSE;
}
}
if (ref_len)
{
frames_sent++;
bytes_sent += ref_len;
}
if (!frame_handled)
{
if (frame_failed)
printf("Frame failed.\n");
printf("Frame not received.\n");
return -1;
}
ref_len = cook_up_msg(buf);
hdlc_tx_frame(&tx, buf, ref_len);
hdlc_tx_abort(&tx);
//hdlc_tx_corrupt_frame(&tx);
frame_handled = FALSE;
}
}
printf("Tests passed.\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
#endif
int main(int argc, char *argv[])
{
printf("HDLC module tests\n");
if (test_hdlc_modes())
{
printf("Tests failed\n");
exit(2);
}
if (test_hdlc_frame_length_error_handling())
{
printf("Tests failed\n");
exit(2);
}
if (test_hdlc_crc_error_handling())
{
printf("Tests failed\n");
exit(2);
}
if (test_hdlc_abort_handling())
{
printf("Tests failed\n");
exit(2);
}
#if 0
if (test_hdlc_octet_count_handling())
{
printf("Tests failed\n");
exit(2);
}
#endif
printf("Tests passed.\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
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