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/*
* hdr_sr.cc
* Copyright (C) 2000 by the University of Southern California
* $Id: hdr_sr.cc,v 1.6 2005/08/25 18:58:04 johnh Exp $
*
* 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.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
*
* The copyright of this module includes the following
* linking-with-specific-other-licenses addition:
*
* In addition, as a special exception, the copyright holders of
* this module give you permission to combine (via static or
* dynamic linking) this module with free software programs or
* libraries that are released under the GNU LGPL and with code
* included in the standard release of ns-2 under the Apache 2.0
* license or under otherwise-compatible licenses with advertising
* requirements (or modified versions of such code, with unchanged
* license). You may copy and distribute such a system following the
* terms of the GNU GPL for this module and the licenses of the
* other code concerned, provided that you include the source code of
* that other code when and as the GNU GPL requires distribution of
* source code.
*
* Note that people who make modified versions of this module
* are not obligated to grant this special exception for their
* modified versions; it is their choice whether to do so. The GNU
* General Public License gives permission to release a modified
* version without this exception; this exception also makes it
* possible to release a modified version which carries forward this
* exception.
*
*/
//
// Other copyrights might apply to parts of this software and are so
// noted when applicable.
//
// Ported from CMU/Monarch's code, appropriate copyright applies.
/* -*- c++ -*-
hdr_sr.cc
source route header
*/
#include <stdio.h>
#include "hdr_sr.h"
int hdr_sr::offset_;
static class SRHeaderClass : public PacketHeaderClass {
public:
SRHeaderClass() : PacketHeaderClass("PacketHeader/SR",
sizeof(hdr_sr)) {
offset(&hdr_sr::offset_);
#ifdef DSR_CONST_HDR_SZ
fprintf(stderr,"WARNING: DSR treating all source route headers\n"
"as having length %d. this should be used only to estimate effect\n"
"of no longer needing a src rt in each packet\n",SR_HDR_SZ);
#endif
}
#if 0
void export_offsets() {
field_offset("valid_", OFFSET(hdr_sr, valid_));
field_offset("num_addrs_", OFFSET(hdr_sr, num_addrs_));
field_offset("cur_addr_", OFFSET(hdr_sr, cur_addr_));
}
#endif
} class_SRhdr;
char *
hdr_sr::dump()
{
static char buf[100];
dump(buf);
return (buf);
}
void
hdr_sr::dump(char *buf)
{
char *ptr = buf;
*ptr++ = '[';
for (int i = 0; i < num_addrs_; i++)
{
ptr += sprintf(ptr, "%s%d ",
(i == cur_addr_) ? "|" : "",
addrs()[i].addr);
}
*ptr++ = ']';
*ptr = '\0';
}
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