mac.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
- * 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.
- *
- * Contributed by Giao Nguyen, http://daedalus.cs.berkeley.edu/~gnguyen
- */
- #ifndef lint
- static const char rcsid[] =
- "@(#) $Header: /nfs/jade/vint/CVSROOT/ns-2/mac/mac.cc,v 1.39 2001/06/05 23:49:43 haldar Exp $ (UCB)";
- #endif
- //#include "classifier.h"
- #include <channel.h>
- #include <mac.h>
- #include <address.h>
- int hdr_mac::offset_;
- static class MacHeaderClass : public PacketHeaderClass {
- public:
- MacHeaderClass() : PacketHeaderClass("PacketHeader/Mac",
- sizeof(hdr_mac)) {
- bind_offset(&hdr_mac::offset_);
- }
- void export_offsets() {
- field_offset("macSA_", OFFSET(hdr_mac, macSA_));
- field_offset("macDA_", OFFSET(hdr_mac, macDA_));
- }
- } class_hdr_mac;
- static class MacClass : public TclClass {
- public:
- MacClass() : TclClass("Mac") {}
- TclObject* create(int, const char*const*) {
- return (new Mac);
- }
- } class_mac;
- void
- MacHandlerResume::handle(Event*)
- {
- mac_->resume();
- }
- void
- MacHandlerSend::handle(Event* e)
- {
- mac_->sendDown((Packet*)e);
- }
- /* =================================================================
- Mac Class Functions
- ==================================================================*/
- static int MacIndex = 0;
- Mac::Mac() :
- BiConnector(), abstract_(0), netif_(0), tap_(0), ll_(0), queue_(0), channel_(0), callback_(0),
- hRes_(this), hSend_(this), state_(MAC_IDLE), pktRx_(0), pktTx_(0)
- {
- index_ = MacIndex++;
- bind_bw("bandwidth_", &bandwidth_);
- bind_time("delay_", &delay_);
- bind_bool("abstract_", &abstract_);
- }
- int Mac::command(int argc, const char*const* argv)
- {
- if(argc == 2) {
- Tcl& tcl = Tcl::instance();
-
- if(strcmp(argv[1], "id") == 0) {
- tcl.resultf("%d", addr());
- return TCL_OK;
- } else if (strcmp(argv[1], "channel") == 0) {
- tcl.resultf("%s", channel_->name());
- return (TCL_OK);
- }
-
- } else if (argc == 3) {
- TclObject *obj;
- if( (obj = TclObject::lookup(argv[2])) == 0) {
- fprintf(stderr, "%s lookup failedn", argv[1]);
- return TCL_ERROR;
- }
- else if (strcmp(argv[1], "netif") == 0) {
- netif_ = (Phy*) obj;
- return TCL_OK;
- }
- else if (strcmp(argv[1], "log-target") == 0) {
- logtarget_ = (NsObject*) obj;
- if(logtarget_ == 0)
- return TCL_ERROR;
- return TCL_OK;
- }
- }
-
- return BiConnector::command(argc, argv);
- }
- void Mac::recv(Packet* p, Handler* h)
- {
- if (hdr_cmn::access(p)->direction() == hdr_cmn::UP) {
- sendUp(p);
- return;
- }
- callback_ = h;
- hdr_mac* mh = HDR_MAC(p);
- mh->set(MF_DATA, index_);
- state(MAC_SEND);
- sendDown(p);
- }
- //JUNGMIN
- int Mac::CheckDest(Packet *p)
- {
-
- printf("This is Mac::CheckDest!!n");
- return -1;
- }
- //end of JUNGMIN
- void Mac::sendUp(Packet* p)
- {
- char* mh = (char*)p->access(hdr_mac::offset_);
- int dst = this->hdr_dst(mh);
- state(MAC_IDLE);
- if (((u_int32_t)dst != MAC_BROADCAST) && (dst != index_)) {
- if(!abstract_){
- drop(p);
- }else {
- //Dont want to creat a trace
- Packet::free(p);
- }
- return;
- }
- Scheduler::instance().schedule(uptarget_, p, delay_);
- }
- void Mac::sendDown(Packet* p)
- {
- Scheduler& s = Scheduler::instance();
- double txt = txtime(p);
- downtarget_->recv(p, this);
- if(!abstract_)
- s.schedule(&hRes_, &intr_, txt);
- }
- void Mac::resume(Packet* p)
- {
- if (p != 0)
- drop(p);
- state(MAC_IDLE);
- callback_->handle(&intr_);
- }
- //Mac* Mac::getPeerMac(Packet* p)
- //{
- //return (Mac*) mcl_->slot(hdr_mac::access(p)->macDA());
- //}