trace-ip.cc

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/* -*-  Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
 * Copyright (c) 1997 Regents of the University of California.
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the Daedalus Research
 *      Group at the University of California Berkeley.
 * 4. Neither the name of the University nor of the Laboratory may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS OR CONTRIBUTORS BE LIABLE
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 * SUCH DAMAGE.
 *
 * Contributed by Giao Nguyen, http://daedalus.cs.berkeley.edu/~gnguyen
 */

#include "ip.h"
#include "trace.h"
#include "mac.h"
//#include "packet.h"


class TraceIp : public Trace {
public:
        TraceIp(int type) : Trace(type) {
                bind("mask_", &mask_);
                bind("shift_", &shift_);
        }
        void recv(Packet*, Handler*);
protected:
        int mask_;
        int shift_;
};

class TraceIpMac : public TraceIp {
public:
        TraceIpMac(int type) : TraceIp(type) {}
        void recv(Packet*, Handler*);
};


class TraceIpClass : public TclClass {
public:
        TraceIpClass() : TclClass("TraceIp") { }
        TclObject* create(int args, const char*const* argv) {
                if (args >= 5)
                        return (new TraceIp(*argv[4]));
                else
                        return NULL;
        }
} traceip_class;

class TraceIpMacClass : public TclClass {
public:
        TraceIpMacClass() : TclClass("TraceIp/Mac") { }
        TclObject* create(int args, const char*const* argv) {
                if (args >= 5)
                        return (new TraceIpMac(*argv[4]));
                else
                        return NULL;
        }
} trace_ip_mac_class;


void TraceIp::recv(Packet* p, Handler* h)
{
        // XXX: convert IP address to node number
        hdr_ip *iph = hdr_ip::access(p);
        int src = (src_ >= 0) ? src_ : (iph->saddr() >> shift_) & mask_;
        int dst = (iph->daddr() >> shift_) & mask_;
        format(type_, src, dst , p);
        pt_->dump();
        target_ ? send(p, h) : Packet::free(p);
}


void TraceIpMac::recv(Packet* p, Handler* h)
{
        // XXX: convert IP address to node number
        // hdr_ip *iph = hdr_ip::access(p);
        
        hdr_ip *iph = HDR_IP(p);
        
        int src = (src_ >= 0) ? src_ : (iph->saddr() >> shift_) & mask_;
        int dst = (iph->daddr() >> shift_) & mask_;

        hdr_mac* mh = HDR_MAC(p);
        
        if (mh->ftype() == MF_ACK || mh->ftype() == MF_CTS)
                format(type_, dst, src , p);
        else
                format(type_, src, dst , p);
        pt_->dump();
        target_ ? send(p, h) : Packet::free(p);
}

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