166 lines
5.1 KiB
C
166 lines
5.1 KiB
C
/****************************************************************************
|
|
* net/iob/iob_dump.c
|
|
*
|
|
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdint.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/net/iob.h>
|
|
|
|
#ifdef CONFIG_DEBUG
|
|
|
|
/****************************************************************************
|
|
* Pre-processor definitions
|
|
****************************************************************************/
|
|
|
|
#ifndef MIN
|
|
# define MIN(a,b) ((a) < (b) ? (a) : (b))
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Function: iob_dump
|
|
*
|
|
* Description:
|
|
* Dump the contents of a I/O buffer chain
|
|
*
|
|
****************************************************************************/
|
|
|
|
void iob_dump(FAR const char *msg, FAR struct iob_s *iob, unsigned int len,
|
|
unsigned int offset)
|
|
{
|
|
FAR struct iob_s *head;
|
|
uint8_t data[32];
|
|
unsigned int maxlen;
|
|
unsigned int nbytes;
|
|
unsigned int lndx;
|
|
unsigned int cndx;
|
|
|
|
head = iob;
|
|
lowsyslog(LOG_DEBUG, "%s: iob=%p pktlen=%d\n", msg, head, head->io_pktlen);
|
|
|
|
/* Check if the offset is beyond the data in the I/O buffer chain */
|
|
|
|
if (offset > head->io_pktlen)
|
|
{
|
|
ndbg("ERROR: offset is past the end of data: %u > %u\n",
|
|
offset, head->io_pktlen);
|
|
return;
|
|
}
|
|
|
|
/* Dump I/O buffer headers */
|
|
|
|
for (; iob; iob = iob->io_flink)
|
|
{
|
|
lowsyslog(LOG_DEBUG, " iob=%p len=%d offset=%d\n",
|
|
iob, iob->io_len, iob->io_offset);
|
|
}
|
|
|
|
/* Get the amount of data to be displayed, limited by the amount that we
|
|
* have beyond the offset.
|
|
*/
|
|
|
|
maxlen = head->io_pktlen - offset;
|
|
len = MIN(len, maxlen);
|
|
|
|
/* Then beginning printing with the buffer containing the offset in groups
|
|
* of 32 bytes.
|
|
*/
|
|
|
|
for (lndx = 0; lndx < len; lndx += 32, offset += 32)
|
|
{
|
|
/* Copy 32-bytes into our local buffer from the current offset */
|
|
|
|
nbytes = iob_copyout(data, head, 32, offset);
|
|
|
|
/* Make sure that we have something to print */
|
|
|
|
if (nbytes > 0)
|
|
{
|
|
lowsyslog(LOG_DEBUG, " %04x: ", offset);
|
|
|
|
for (cndx = 0; cndx < 32; cndx++)
|
|
{
|
|
if (cndx == 16)
|
|
{
|
|
lowsyslog(LOG_DEBUG, " ");
|
|
}
|
|
|
|
if ((lndx + cndx) < len)
|
|
{
|
|
lowsyslog(LOG_DEBUG, "%02x", data[cndx]);
|
|
}
|
|
else
|
|
{
|
|
lowsyslog(LOG_DEBUG, " ");
|
|
}
|
|
}
|
|
|
|
lowsyslog(LOG_DEBUG, " ");
|
|
for (cndx = 0; cndx < 32; cndx++)
|
|
{
|
|
if (cndx == 16)
|
|
{
|
|
lowsyslog(LOG_DEBUG, " ");
|
|
}
|
|
|
|
if ((lndx + cndx) < len)
|
|
{
|
|
if (data[cndx] >= 0x20 && data[cndx] < 0x7f)
|
|
{
|
|
lowsyslog(LOG_DEBUG, "%c", data[cndx]);
|
|
}
|
|
else
|
|
{
|
|
lowsyslog(LOG_DEBUG, ".");
|
|
}
|
|
}
|
|
}
|
|
|
|
lowsyslog(LOG_DEBUG, "\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_DEBUG */
|