Hello
Read carefully page 119 of the NS manual( Adding a New Packet Header Type).I
think that this can help you.
--- On Tue, 12/2/08, sai krishna gumudavally [EMAIL PROTECTED] wrote:
From: sai krishna gumudavally [EMAIL PROTECTED]
Subject: [ns] Changing the IP header
To: ns-users@ISI.EDU
Date: Tuesday, December 2, 2008, 10:22 PM
Hello,
I'm working on a project where i need to add a new field to the
existing IP header and bind it so that i can pass some value from tcl
script.Can any one give me a detailed procedure on how to do it as I'm
relatively new to NS2.
I am currently using ns-2.33 .
I tried to do the same with TCP and it worked.But that doesnt happen with IP
header.
It says cannot over load the default constructor (because i put the bind
statement in the constructor).
Please reply to this problem as soon as possible.
#ifndef lint
static const char rcsid[] =
@(#) $Header: /cvsroot/nsnam/ns-2/common/ip.cc,v 1.8 1998/08/12
23:41:05 gnguyen Exp $;
#endif
#include packet.h
#include ip.h
int hdr_ip::offset_;
static class IPHeaderClass : public PacketHeaderClass {
public:
IPHeaderClass() : PacketHeaderClass(PacketHeader/IP,
sizeof(hdr_ip)) {
bind_offset(hdr_ip::offset_);
* bind(gsq_, gsq_);*
}
//IPHeaderClass()::IPHeaderClass(){
//IPHeaderClass() : PacketHeaderClass(const char*, int) {
*//bind(gsq, gsq_);*
//};
void export_offsets() {
field_offset(src_, OFFSET(hdr_ip, src_));
field_offset(dst_, OFFSET(hdr_ip, dst_));
field_offset(ttl_, OFFSET(hdr_ip, ttl_));
* field_offset(gsq_, OFFSET(hdr_ip, gsq_));*
field_offset(fid_, OFFSET(hdr_ip, fid_));
field_offset(prio_, OFFSET(hdr_ip, prio_));
}
} class_iphdr;
With,
Thanks Regards
-Saikrishna
