NS2.26SourcesOriginal: MIPBSAgent class Reference

00084                        : Agent(PT_UDP), beacon_(1.0), 
00085   bcast_target_(0), ragent_(0), timer_(this), adlftm_(~0)
00086 {
00087         bind("adSize_", &size_);
00088         //bind("shift_", &shift_);
00089         //bind("mask_", &mask_);
00090         bind("ad_lifetime_", &adlftm_);
00091         size_ = AGENT_ADS_SIZE;
00092         seqno_ = -1;
00093 }

00327 {
00328         char wrk[256];
00329         int n;
00330         double curTime = (&Scheduler::instance() == NULL ? 0 : 
00331                           Scheduler::instance().clock());
00332         
00333         sprintf(wrk, "a -t "TIME_FORMAT" -s %d -d %d -n %s",
00334                 curTime, here_.addr_, dst_.addr_, name);
00335         n = strlen(wrk);
00336         wrk[n] = '\n';
00337         wrk[n+1] = 0;
00338         if (channel_)
00339                 (void)Tcl_Write(channel_, wrk, n+1);
00340         // keep agent trace name
00341         if (traceName_ != NULL)
00342                 delete[] traceName_;
00343         traceName_ = new char[strlen(name)+1];
00344         strcpy(traceName_, name);
00345 }

00096 { return here_.addr_; }

00518 {
00519         Packet* p = allocpkt();
00520 
00521         if (n > 0)
00522                 p->allocdata(n);
00523 
00524         return(p);
00525 }

00507 {
00508         Packet* p = Packet::alloc();
00509         initpkt(p);
00510         return (p);
00511 }

00373 {
00374         app_ = app;
00375 }

00178 {
00179         if (argc == 3) {
00180                 if (strcmp(argv[1], "beacon-period") == 0) {
00181                         beacon_ = atof(argv[2]);
00182                         timer_.resched(Random::uniform(0, beacon_));
00183                         return TCL_OK;
00184                 }
00185                 if (strcmp(argv[1], "bcast-target") == 0) {
00186                         bcast_target_ = (NsObject *)TclObject::lookup(argv[2]);
00187                         return TCL_OK;
00188                 }
00189                 if (strcmp(argv[1], "ragent") == 0) {
00190                   ragent_ = (NsObject *)TclObject::lookup(argv[2]);
00191                         return TCL_OK;
00192                 }
00193         }
00194         return (Agent::command(argc, argv));
00195 }

00390 {
00391 /*
00392         dst_ = dst;
00393 */
00394 }

00098 { return dst_.addr_; }

00103 {
00104         if (!debug_)
00105                 return;
00106         va_list ap;
00107         va_start(ap, fmt);
00108         vprintf(fmt, ap);
00109 }

00094 {
00095         if (delay_bind(varName, localName, "agent_addr_", (int*)&(here_.addr_), tracer)) return TCL_OK;
00096         if (delay_bind(varName, localName, "agent_port_", (int*)&(here_.port_), tracer)) return TCL_OK;
00097         if (delay_bind(varName, localName, "dst_addr_", (int*)&(dst_.addr_), tracer)) return TCL_OK;
00098         if (delay_bind(varName, localName, "dst_port_", (int*)&(dst_.port_), tracer)) return TCL_OK;
00099         if (delay_bind(varName, localName, "fid_", (int*)&fid_, tracer)) return TCL_OK;
00100         if (delay_bind(varName, localName, "prio_", (int*)&prio_, tracer)) return TCL_OK;
00101         if (delay_bind(varName, localName, "flags_", (int*)&flags_, tracer)) return TCL_OK;
00102         if (delay_bind(varName, localName, "ttl_", &defttl_, tracer)) return TCL_OK;
00103         if (delay_bind(varName, localName, "class_", (int*)&fid_, tracer)) return TCL_OK;
00104         return Connector::delay_bind_dispatch(varName, localName, tracer);
00105 }

00079 {
00080         delay_bind_init_one("agent_addr_");
00081         delay_bind_init_one("agent_port_");
00082         delay_bind_init_one("dst_addr_");
00083         delay_bind_init_one("dst_port_");
00084         delay_bind_init_one("fid_");
00085         delay_bind_init_one("prio_");
00086         delay_bind_init_one("flags_");
00087         delay_bind_init_one("ttl_");
00088         delay_bind_init_one("class_");
00089         Connector::delay_bind_init_all();
00090 }

00223 {
00224         char wrk[256];
00225 
00226         // XXX we don't know InstVar outside of Tcl! Is there any
00227         // tracedvars hidden in InstVar? If so, shall we have a tclclInt.h?
00228         TracedVar* var = tracedvar_;
00229         for ( ;  var != 0;  var = var->next_) 
00230                 flushAVar(var);
00231 
00232         // we need to flush all var values to trace file, 
00233         // so nam can do backtracing
00234         sprintf(wrk, "a -t "TIME_FORMAT" -s %d -d %d -n %s -x",
00235                 Scheduler::instance().clock(), here_.addr_,
00236                 dst_.addr_, traceName_); 
00237         if (traceName_ != NULL)
00238                 delete[] traceName_;
00239         traceName_ = NULL;
00240 }

00099 { return dst_.port_; }

00115 {
00116         if (drop_ != 0)
00117                 drop_->recv(p, s);
00118         else
00119                 Packet::free(p);
00120 }

00107 {
00108         if (drop_ != 0)
00109                 drop_->recv(p);
00110         else
00111                 Packet::free(p);
00112 }

00101 { return type_; }

00092 {
00093         recv((Packet*)e);
00094 }

00364 {
00365         if (app_)
00366                 app_->resume();
00367 }

00447 {
00448         hdr_cmn* ch = hdr_cmn::access(p);
00449         ch->uid() = uidcnt_++;
00450         ch->ptype() = type_;
00451         ch->size() = size_;
00452         ch->timestamp() = Scheduler::instance().clock();
00453         ch->iface() = UNKN_IFACE.value(); // from packet.h (agent is local)
00454         ch->direction() = hdr_cmn::NONE;
00455 
00456         ch->error() = 0;        /* pkt not corrupt to start with */
00457 
00458         hdr_ip* iph = hdr_ip::access(p);
00459         iph->saddr() = here_.addr_;
00460         iph->sport() = here_.port_;
00461         iph->daddr() = dst_.addr_;
00462         iph->dport() = dst_.port_;
00463         
00464         //DEBUG
00465         //if (dst_ != -1)
00466         //  printf("pl break\n");
00467         
00468         iph->flowid() = fid_;
00469         iph->prio() = prio_;
00470         iph->ttl() = defttl_;
00471 
00472         hdr_flags* hf = hdr_flags::access(p);
00473         hf->ecn_capable_ = 0;
00474         hf->ecn_ = 0;
00475         hf->eln_ = 0;
00476         hf->ecn_to_echo_ = 0;
00477         hf->fs_ = 0;
00478         hf->no_ts_ = 0;
00479         hf->pri_ = 0;
00480         hf->cong_action_ = 0;
00481 #ifdef HAVE_STL
00482 
00483         hdr_nv* nv = hdr_nv::access(p);
00484         if (0)
00485                 printf("Off hdr_nv %d, ip_hdr %d myaddr %ld\n",
00486                        hdr_nv::offset(), hdr_ip::offset(), here_.addr_);
00487         NixNode* pNixNode = NixNode::GetNodeObject(here_.addr_);
00488         if (0)
00489                 printf("Node Object %p\n", pNixNode);
00490         if (pNixNode) { 
00491                 // If we get non-null, indicates nixvector routing in use
00492                 // Delete any left over nv in the packet
00493                 // Get a nixvector to the target (may create new)
00494                 NixVec* pNv = pNixNode->GetNixVector(dst_.addr_);
00495                 pNv->Reset();
00496                 nv->nv() = pNv; // And set the nixvec in the packet
00497                 nv->h_used = 0; // And reset used portion to 0
00498         }
00499 #endif //HAVE_STL
00500 }

00251 {
00252         OldValue *p = new OldValue;
00253         assert(p != NULL);
00254         strncpy(p->val_, value, min(strlen(value)+1, TRACEVAR_MAXVALUELENGTH));
00255         p->var_ = v;
00256         p->next_ = NULL;
00257         if (oldValueList_ == NULL) 
00258                 oldValueList_ = p;
00259         else {
00260                 p->next_ = oldValueList_;
00261                 oldValueList_ = p;
00262         }
00263 }

00061 { return debug_; }

00243 {
00244         OldValue *p = oldValueList_;
00245         while ((p != NULL) && (p->var_ != v))
00246                 p = p->next_;
00247         return p;
00248 }

00311 {
00312         char wrk[256];
00313         int n;
00314         double curTime = (&Scheduler::instance() == NULL ? 0 : 
00315                           Scheduler::instance().clock());
00316         
00317         sprintf(wrk, "v -t "TIME_FORMAT" -e monitor_agent %d %s",
00318                 curTime, here_.addr_, traceName_);
00319         n = strlen(wrk);
00320         wrk[n] = '\n';
00321         wrk[n+1] = 0;
00322         if (channel_)
00323                 (void)Tcl_Write(channel_, wrk, n+1);
00324 }

00097 { return here_.port_; }

00097 {
00098         Packet::free(p);
00099 }

00096 {
00097         Tcl& tcl = Tcl::instance();
00098         char *objname = NULL;
00099         NsObject *obj = NULL;
00100         hdr_mip *miph = hdr_mip::access(p);
00101         hdr_ip *iph = hdr_ip::access(p);
00102         hdr_cmn *ch = hdr_cmn::access(p);
00103         int nodeaddr = Address::instance().get_nodeaddr(addr());
00104         
00105         switch (miph->type_) {
00106         case MIPT_REG_REQUEST:
00107           //if (miph->ha_ == (addr_ >> shift_ & mask_)) {
00108           if (miph->ha_ == (Address::instance().get_nodeaddr(addr()))){
00109             if (miph->ha_ == miph->coa_) { // back home
00110               tcl.evalf("%s clear-reg %d", name_,
00111                         miph->haddr_);
00112             }
00113             else {
00114               tcl.evalf("%s encap-route %d %d %lf", name_,
00115                         miph->haddr_, miph->coa_,
00116                         miph->lifetime_);
00117             }
00118             iph->dst() = iph->src();
00119             miph->type_ = MIPT_REG_REPLY;
00120           }
00121           else {
00122             //iph->dst() = iph->dst() & ~(~(nsaddr_t)0 << shift_) | (miph->ha_ & mask_) << shift_;
00123             iph->daddr() = miph->ha_;
00124             iph->dport() = 0;
00125           }
00126           iph->saddr() = addr();
00127           iph->sport() = port();
00128           // by now should be back to normal route
00129           // if dst is the mobile
00130           // also initialise forward counter to 0. otherwise routing
00131           // agent is going to think pkt is looping and drop it!!
00132           ch->num_forwards() = 0;
00133           
00134           send(p, 0);
00135           break;
00136         case MIPT_REG_REPLY:
00137           //assert(miph->coa_ == (addr_ >> shift_ & mask_));
00138 
00139           assert(miph->coa_ == nodeaddr);
00140           tcl.evalf("%s get-link %d %d", name_, nodeaddr, miph->haddr_);
00141           //
00142           // XXX hacking mobileip. all this should go away
00143           // when mobileIP for sun-wired model is no longer reqd.
00144           //
00145           obj = (NsObject*)tcl.lookup(objname = tcl.result());
00146           if (strlen(objname) == 0)
00147             objname = "XXX";
00148           tcl.evalf("%s decap-route %d %s %lf", name_, miph->haddr_,
00149                     objname, miph->lifetime_);
00150           
00151           iph->src() = iph->dst();
00152           //iph->dst() = iph->dst() & ~(~(nsaddr_t)0 << shift_) |(miph->haddr_ & mask_) << shift_;
00153           iph->daddr() = miph->haddr_;
00154           iph->dport() = 0;
00155           if (obj == NULL)
00156             obj = ragent_;
00157           obj->recv(p, (Handler*)0);
00158           break;
00159         case MIPT_SOL:
00160           //tcl.evalf("%s get-link %d %d", name_, addr_ >> shift_ & mask_,miph->haddr_);
00161           tcl.evalf("%s get-link %d %d",name_,nodeaddr,miph->haddr_);
00162           send_ads(miph->haddr_, (NsObject*)tcl.lookup(tcl.result()));
00163           Packet::free(p);
00164           break;
00165         default:
00166           Packet::free(p);
00167           break;
00168         }
00169 }

00355 {
00356         if (app_)
00357                 app_->recv(nbytes);     
00358 }

00089 { sendmsg(nbytes); }

00084 { sendmsg(sz, data, 0); }

00080 { target_->recv(p, h); }

00198 {
00199         Packet *p = allocpkt();
00200         hdr_mip *h = hdr_mip::access(p);
00201         hdr_ip *iph = hdr_ip::access(p);
00202         h->haddr_ = h->ha_ = -1;
00203         //h->coa_ = addr_ >> shift_ & mask_;
00204         h->coa_ = Address::instance().get_nodeaddr(addr());
00205         h->type_ = MIPT_ADS;
00206         h->lifetime_ = adlftm_;
00207         h->seqno_ = ++seqno_;
00208         if (dst != -1) {
00209           iph->daddr() = dst;
00210           iph->dport() = 0;
00211         }
00212         else {
00213           // if bcast pkt
00214           sendOutBCastPkt(p);
00215         }
00216         if (target == NULL) {
00217           if (bcast_target_) bcast_target_->recv(p, (Handler*) 0);
00218           else if (target_) target_->recv(p, (Handler*) 0);
00219           else Packet::free(p); // drop; may log in future code
00220         }
00221         else target->recv(p, (Handler*)0);
00222 }

00401 {
00402         fprintf(stderr, 
00403         "Agent::sendmsg(int, AppData*, const char*) not implemented\n");
00404         abort();
00405 }

00226 {
00227   hdr_ip *iph = hdr_ip::access(p);
00228   hdr_cmn *hdrc = hdr_cmn::access(p);
00229   hdrc->next_hop_ = IP_BROADCAST;
00230   hdrc->addr_type_ = NS_AF_INET;
00231   iph->daddr() = IP_BROADCAST;
00232   iph->dport() = 0;
00233 }

00409 {
00410         fprintf(stderr, 
00411         "Agent::sendmsg(int, AppData*, const char*) not implemented\n");
00412         abort();
00413 }

00100 { type_ = pkttype; }

00095 { return size_; }

00048 { return target_; }

00172 {
00173         send_ads();
00174         timer_.resched(beacon_);
00175 }

00267 {
00268         if (channel_ == 0)
00269                 return;
00270         char wrk[256], value[128];
00271         int n;
00272 
00273         // XXX we need to keep track of old values. What's the best way?
00274         v->value(value, 128);
00275 
00276         // XXX hack: how do I know ns has not started yet?
00277         // if there's nothing in value, return
00278         static int started = 0;
00279         if (!started) {
00280                 Tcl::instance().evalc("[Simulator instance] is-started");
00281                 if (Tcl::instance().result()[0] == '0')
00282                         // Simulator not started, do nothing
00283                         return;
00284                 // remember for next time (so we don't always have to call to tcl)
00285                 started = 1;
00286         };
00287 
00288         OldValue *ov = lookupOldValue(v);
00289         if (ov != NULL) {
00290                 sprintf(wrk, 
00291                         "f -t "TIME_FORMAT" -s %d -d %d -n %s -a %s -v %s -o %s -T v",
00292                         Scheduler::instance().clock(), here_.addr_,
00293                         dst_.addr_, v->name(), traceName_, value, ov->val_);
00294                 strncpy(ov->val_, 
00295                         value,
00296                         min(strlen(value)+1, TRACEVAR_MAXVALUELENGTH));
00297         } else {
00298                 // if there is value, insert it into old value list
00299                 sprintf(wrk, "f -t "TIME_FORMAT" -s %d -d %d -n %s -a %s -v %s -T v",
00300                         Scheduler::instance().clock(), here_.addr_,
00301                         dst_.addr_, v->name(), traceName_, value);
00302                 insertOldValue(v, value);
00303         }
00304         n = strlen(wrk);
00305         wrk[n] = '\n';
00306         wrk[n+1] = 0;
00307         (void)Tcl_Write(channel_, wrk, n+1);
00308 }


Public Member Functions
	MIPBSAgent ()
virtual void	recv (Packet , Handler )
void	timeout (int)
virtual void	recv (Packet p, const char s)
void	recvOnly (Packet *)
void	send (Packet p, Handler h)
virtual void	send (int sz, AppData *data)
virtual void	send (int nbytes)
virtual void	sendmsg (int sz, AppData , const char flags=0)
virtual void	sendmsg (int nbytes, const char *flags=0)
virtual void	sendto (int sz, AppData , const char flags, nsaddr_t dst)
virtual void	sendto (int nbytes, const char *flags, nsaddr_t dst)
virtual void	connect (nsaddr_t dst)
virtual void	close ()
virtual void	listen ()
virtual void	attachApp (Application *app)
virtual int &	size ()
nsaddr_t &	addr ()
nsaddr_t &	port ()
nsaddr_t &	daddr ()
nsaddr_t &	dport ()
void	set_pkttype (packet_t pkttype)
packet_t	get_pkttype ()
NsObject *	target ()
virtual void	drop (Packet *p)
int	isdebug () const
virtual void	debug (const char *fmt,...)
Protected Member Functions
int	command (int argc, const char const argv)
void	send_ads (int dst=-1, NsObject *target=NULL)
void	sendOutBCastPkt (Packet *p)
virtual void	delay_bind_init_all ()
virtual int	delay_bind_dispatch (const char varName, const char localName, TclObject *tracer)
virtual void	recvBytes (int bytes)
virtual void	idle ()
Packet *	allocpkt () const
Packet *	allocpkt (int) const
void	initpkt (Packet *) const
virtual void	trace (TracedVar *v)
void	deleteAgentTrace ()
void	addAgentTrace (const char *name)
void	monitorAgentTrace ()
OldValue *	lookupOldValue (TracedVar *v)
void	insertOldValue (TracedVar v, const char value)
void	dumpTracedVars ()
virtual void	trace_event (char *eventtype)
virtual void	drop (Packet p, const char s)
virtual void	reset ()
void	handle (Event *)
Protected Attributes
double	beacon_
NsObject *	bcast_target_
NsObject *	ragent_
SimpleTimer	timer_
int	mask_
int	shift_
int	seqno_
double	adlftm_
ns_addr_t	here_
ns_addr_t	dst_
int	size_
packet_t	type_
int	fid_
int	prio_
int	flags_
int	defttl_
Tcl_Channel	channel_
char *	traceName_
OldValue *	oldValueList_
Application *	app_
EventTrace *	et_
NsObject *	target_
NsObject *	drop_
int	debug_
Static Protected Attributes
int	uidcnt_

MIPBSAgent Class Reference

Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation