Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / verif / env / common / vera / niu_ippktgen / C / libnet / src / libnet_advanced.c

/*
*  $Id: libnet_advanced.c,v 1.20 2005/11/29 22:32:53 carlosc Exp $
*
*  libnet
*  libnet_advanced.c - Advanced routines
*
*  Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
*  All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
*/

#if (HAVE_CONFIG_H)
#include "../include/config.h"
#endif
#if (!(_WIN32) || (__CYGWIN__)) 
#include "../include/libnet.h"
#else
#include "../include/win32/libnet.h"
#endif

int
libnet_adv_cull_packet(libnet_t *l, u_int8_t **packet, u_int32_t *packet_s)
{
   *packet = NULL;
   *packet_s = 0;

   if (l->injection_type != LIBNET_LINK_ADV)
   {
       snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
               "%s(): advanced link mode not enabled\n", __func__);
       return (-1);
   }

   /* checksums will be written in */
   return (libnet_pblock_coalesce(l, packet, packet_s));
}

int
libnet_adv_cull_header(libnet_t *l, libnet_ptag_t ptag, u_int8_t **header,
       u_int32_t *header_s)
{
   libnet_pblock_t *p;

   *header = NULL;
   *header_s = 0;

   if (l->injection_type != LIBNET_LINK_ADV)
   {
       snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
               "%s(): advanced link mode not enabled\n", __func__);
       return (-1);
   }

   p = libnet_pblock_find(l, ptag);
   if (p == NULL)
   {
       snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
           "%s(): ptag not found, you sure it exists?\n", __func__);
       return (-1);
   }
   *header   = p->buf;
   *header_s = p->b_len;

   return (1);
}

int
libnet_adv_write_link(libnet_t *l, u_int8_t *packet, u_int32_t packet_s)
{
   int c;

   if (l->injection_type != LIBNET_LINK_ADV)
   {
       snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
               "%s(): advanced link mode not enabled\n", __func__);
       return (-1);
   }
   c = libnet_write_link(l, packet, packet_s);

   /* do statistics */
   if (c == packet_s)
   {
       l->stats.packets_sent++;
       l->stats.bytes_written += c;
   }
   else
   {
       l->stats.packet_errors++;
       /*
        *  XXX - we probably should have a way to retrieve the number of
        *  bytes actually written (since we might have written something).
        */
       if (c > 0)
       {
           l->stats.bytes_written += c;
       }
   }
   return (c);
}

void
libnet_adv_free_packet(libnet_t *l, u_int8_t *packet)
{
   /*
    *  Restore original pointer address so free won't complain about a
    *  modified chunk pointer.
    */
   if (l->aligner > 0)
   {
       packet = packet - l->aligner;
   }
   free(packet);
}

/* EOF */