

Public Member Functions | |
| SFQ () | |
| virtual int | command (int argc, const char *const *argv) |
| Packet * | deque (void) |
| void | enque (Packet *pkt) |
| virtual void | recv (Packet *, Handler *) |
| virtual void | recv (Packet *p, const char *s) |
| virtual void | updateStats (int queuesize) |
| void | resume () |
| int | blocked () const |
| void | unblock () |
| void | block () |
| int | limit () |
| int | length () |
| int | byteLength () |
| virtual double | utilization (void) |
| virtual void | reset () |
| virtual void | destroy () |
| void | enqueue (QueueElem< T > *e) |
| QueueElem< T > * | dequeue () |
| void | detach (QueueElem< T > *e) |
| QueueElem< T > * | getHead () |
| int | is_empty () const |
| int | size () const |
| NsObject * | target () |
| virtual void | drop (Packet *p) |
| virtual void | recvOnly (Packet *) |
| virtual void | delay_bind_init_all () |
| virtual int | delay_bind_dispatch (const char *varName, const char *localName, TclObject *tracer) |
| int | isdebug () const |
| virtual void | debug (const char *fmt,...) |
Protected Member Functions | |
| void | initsfq () |
| void | clear () |
| int | hash (Packet *) |
| void | reset () |
| void | utilUpdate (double int_begin, double int_end, int link_state) |
| virtual void | drop (Packet *p, const char *s) |
| void | send (Packet *p, Handler *h) |
| void | handle (Event *) |
Protected Attributes | |
| int | maxqueue_ |
| int | buckets_ |
| PacketSFQ * | bucket |
| PacketSFQ * | active |
| int | occupied |
| int | fairshare |
| int | qlim_ |
| int | blocked_ |
| int | unblock_on_resume_ |
| QueueHandler | qh_ |
| PacketQueue * | pq_ |
| double | true_ave_ |
| double | total_time_ |
| double | last_change_ |
| double | old_util_ |
| double | util_weight_ |
| QueueElem< T > * | head_ |
| QueueElem< T > * | tail_ |
| int | size_ |
| NsObject * | target_ |
| NsObject * | drop_ |
| int | debug_ |
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Definition at line 108 of file sfq.cc. References active, bucket, buckets_, and maxqueue_.
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Definition at line 131 of file queue.h. References Queue< T >::blocked_.
00131 { blocked_ = 1; }
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Definition at line 129 of file queue.h. References Queue< T >::blocked_. Referenced by CBQClass::recv().
00129 { return (blocked_ == 1); }
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Definition at line 135 of file queue.h. References PacketQueue::byteLength(), and Queue< T >::pq_.
00135 { return pq_->byteLength(); } /* number of bytes *
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Definition at line 118 of file sfq.cc. References bucket, buckets_, and PacketSFQ::pkts. Referenced by command().
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Reimplemented from Connector. Definition at line 150 of file sfq.cc. References buckets_, clear(), Connector::command(), fairshare, and maxqueue_.
00151 {
00152 if (argc == 3) {
00153 if (strcmp(argv[1], "limit") == 0) {
00154 maxqueue_ = atoi(argv[2]);
00155 fairshare = maxqueue_ / buckets_;
00156 return (TCL_OK);
00157 }
00158 if (strcmp(argv[1], "buckets") == 0) {
00159 clear();
00160 buckets_ = atoi(argv[2]);
00161 return (TCL_OK);
00162 }
00163 }
00164 return (Queue::command(argc, argv));
00165 }
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Definition at line 102 of file object.cc. References NsObject::debug_.
00103 {
00104 if (!debug_)
00105 return;
00106 va_list ap;
00107 va_start(ap, fmt);
00108 vprintf(fmt, ap);
00109 }
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Reimplemented in BayFullTcpAgent, Agent, MPLSAddressClassifier, LDPAgent, FullTcpAgent, SackFullTcpAgent, RFC793eduTcpAgent, TcpSink, TcpAgent, and VegasTcpAgent. Definition at line 63 of file object.cc. References NsObject::debug_. Referenced by MPLSAddressClassifier::delay_bind_dispatch(), and Agent::delay_bind_dispatch().
00064 {
00065 if (delay_bind_bool(varName, localName, "debug_", &debug_, tracer))
00066 return TCL_OK;
00067 return TclObject::delay_bind_dispatch(varName, localName, tracer);
00068 }
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Reimplemented in BayFullTcpAgent, Agent, MPLSAddressClassifier, LDPAgent, FullTcpAgent, SackFullTcpAgent, RFC793eduTcpAgent, TcpSink, TcpAgent, and VegasTcpAgent. Definition at line 57 of file object.cc. Referenced by MPLSAddressClassifier::delay_bind_init_all(), and Agent::delay_bind_init_all().
00058 {
00059 delay_bind_init_one("debug_");
00060 }
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Implements Queue< T >. Definition at line 180 of file sfq.cc. References active, bucket, PacketQueue::deque(), PacketSFQ::idle(), initsfq(), PacketSFQ::next, occupied, and PacketSFQ::pkts.
00181 {
00182 Packet* pkt;
00183
00184 if (!bucket)
00185 initsfq();
00186 if (!active) {
00187 // fprintf(stderr, " dequeue: empty\n");
00188 return (0);
00189 }
00190 --active->pkts;
00191 --occupied;
00192 pkt = active->deque();
00193 // fprintf(stderr, "dequeue 0x%x(%d): 0x%x\n",
00194 // (int)active, active->pkts, (int)pkt);
00195 // active->sfqdebug();
00196 if (active->pkts == 0)
00197 active = active->idle(active);
00198 else
00199 active = active->next;
00200 return pkt;
00201 }
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Definition at line 378 of file mcache.h. References Queue< T >::head_, QueueElem< T >::next(), QueueElem< T >::next_, Queue< T >::size_, and Queue< T >::tail_. Referenced by Queue< T >::detach(), and MediaServer::get_next_segment().
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Definition at line 358 of file mcache.h. References QueueElem< T >::data(), Queue< T >::head_, and QueueElem< T >::next().
00358 {
00359 QueueElem<T> *p = head_, *q;
00360 while (p != NULL) {
00361 q = p;
00362 p = p->next();
00363 delete q->data();
00364 delete q;
00365 }
00366 head_ = NULL;
00367 }
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Definition at line 390 of file mcache.h. References Queue< T >::dequeue(), Queue< T >::head_, QueueElem< T >::next_, Queue< T >::size_, and Queue< T >::tail_. Referenced by MediaServer::command().
00390 {
00391 assert(head_ != 0);
00392 if (head_ == e) {
00393 dequeue();
00394 return;
00395 }
00396 QueueElem<T> *p = head_;
00397 while (p != NULL) {
00398 if (p->next_ != e)
00399 p = p->next_;
00400 else
00401 break;
00402 }
00403 assert(p != NULL);
00404 p->next_ = e->next_;
00405 if (tail_ == e)
00406 tail_ = p;
00407 size_--;
00408 if (size_ == 0)
00409 assert((head_ == 0) && (tail_ == 0));
00410 }
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Definition at line 114 of file connector.cc. References Connector::drop_, Packet::free(), and NsObject::recv().
00115 {
00116 if (drop_ != 0)
00117 drop_->recv(p, s);
00118 else
00119 Packet::free(p);
00120 }
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Implements Queue< T >. Definition at line 203 of file sfq.cc. References PacketSFQ::activate(), active, bucket, buckets_, Connector::drop(), PacketQueue::enque(), fairshare, hash(), initsfq(), maxqueue_, occupied, and PacketSFQ::pkts.
00204 {
00205 int which;
00206 PacketSFQ *q;
00207 int used, left;
00208
00209 if (!bucket)
00210 initsfq();
00211 which = hash(pkt) % buckets_;
00212 q = &bucket[which];
00213 // log_packet_arrival(pkt);
00214 used = q->pkts;
00215 left = maxqueue_ - occupied;
00216 // note: if maxqueue_ is changed while running left can be < 0
00217 if ((used >= (left >> 1))
00218 || (left < buckets_ && used > fairshare)
00219 || (left <= 0)) {
00220 // log_packet_drop(pkt);
00221 drop(pkt);
00222 // fprintf(stderr, " drop: 0x%x\n", (int)pkt);
00223 return;
00224 }
00225 q->enque(pkt);
00226 ++occupied;
00227 ++q->pkts;
00228 if (q->pkts == 1)
00229 active = q->activate(active);
00230 // fprintf(stderr, " enqueue(%d=%d): 0x%x\n", which, q->pkts, (int)pkt);
00231 // active->sfqdebug();
00232 }
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Definition at line 369 of file mcache.h. References QueueElem< T >::append(), Queue< T >::head_, Queue< T >::size_, and Queue< T >::tail_. Referenced by MediaServer::command(), and MediaServer::get_next_segment().
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Definition at line 411 of file mcache.h. References Queue< T >::head_. Referenced by MediaServer::find_prefinfo().
00411 { return head_; }
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Implements Handler. Reimplemented in LinkDelay, LL, AckRecons, and Snoop. Definition at line 91 of file object.cc. References NsObject::recv().
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Definition at line 234 of file sfq.cc. References hdr_ip::access(), hdr_ip::daddr(), and hdr_ip::saddr(). Referenced by enque().
00235 {
00236 hdr_ip* iph = hdr_ip::access(pkt);
00237 int i = (int)iph->saddr();
00238 int j = (int)iph->daddr();
00239 int k = i + j;
00240
00241 return (k + (k >> 8) + ~(k >> 4)) % ((2<<19)-1); // modulo a large prime
00242 }
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Definition at line 136 of file sfq.cc. References active, bucket, buckets_, fairshare, maxqueue_, and occupied. Referenced by deque(), and enque().
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Definition at line 412 of file mcache.h. References Queue< T >::size_. Referenced by MediaServer::command(), and MediaServer::get_next_segment().
00412 { return (size_ == 0); }
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Definition at line 61 of file object.h. References NsObject::debug_.
00061 { return debug_; }
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Reimplemented in DRR, and SRR. Definition at line 133 of file queue.h. References PacketQueue::length(), and Queue< T >::pq_. Referenced by REMQueue::run_updaterule(), Snoop::snoop_data(), and JoBS::updateStats().
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Definition at line 132 of file queue.h. References Queue< T >::qlim_. Referenced by dsREDQueue::reset(), and Snoop::snoop_data().
00132 { return qlim_; }
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Reimplemented in CMUTrace. Definition at line 96 of file object.cc. References Packet::free().
00097 {
00098 Packet::free(p);
00099 }
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Reimplemented from Connector. Reimplemented in CBQueue, FQ, and PriQueue. Definition at line 101 of file queue.cc. References Queue< T >::blocked_, Scheduler::clock(), Queue< T >::deque(), Queue< T >::enque(), Scheduler::instance(), Queue< T >::last_change_, Queue< T >::qh_, NsObject::recv(), Connector::target_, and Queue< T >::utilUpdate(). Referenced by PriQueue::recv().
00102 {
00103 double now = Scheduler::instance().clock();
00104 enque(p);
00105 if (!blocked_) {
00106 /*
00107 * We're not blocked. Get a packet and send it on.
00108 * We perform an extra check because the queue
00109 * might drop the packet even if it was
00110 * previously empty! (e.g., RED can do this.)
00111 */
00112 p = deque();
00113 if (p != 0) {
00114 utilUpdate(last_change_, now, blocked_);
00115 last_change_ = now;
00116 blocked_ = 1;
00117 target_->recv(p, &qh_);
00118 }
00119 }
00120 }
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Reimplemented in Agent, and Trace. Definition at line 56 of file object.h. Referenced by Trace::recvOnly().
00056 {};
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Reimplemented from NsObject. Reimplemented in dsREDQueue, CBQueue, DropTail, PIQueue, RedPDQueue, REDQueue, REMQueue, and RIOQueue. Definition at line 349 of file mcache.h. References Queue< T >::head_, and QueueElem< T >::next().
00349 {
00350 QueueElem<T> *p = head_, *q;
00351 while (p != NULL) {
00352 q = p;
00353 p = p->next();
00354 delete q;
00355 }
00356 head_ = NULL;
00357 }
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Reimplemented from NsObject. Reimplemented in dsREDQueue, CBQueue, DropTail, PIQueue, RedPDQueue, REDQueue, REMQueue, and RIOQueue. Definition at line 174 of file queue.cc. References Queue< T >::deque(), Connector::drop(), Queue< T >::total_time_, and Queue< T >::true_ave_. Referenced by REDQueue::reset(), PIQueue::reset(), dsREDQueue::reset(), and DropTail::reset().
00175 {
00176 Packet* p;
00177 total_time_ = 0.0;
00178 true_ave_ = 0.0;
00179 while ((p = deque()) != 0)
00180 drop(p);
00181 }
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Definition at line 154 of file queue.cc. References Queue< T >::blocked_, Scheduler::clock(), Queue< T >::deque(), Scheduler::instance(), Queue< T >::last_change_, Queue< T >::qh_, NsObject::recv(), Connector::target_, Queue< T >::unblock_on_resume_, and Queue< T >::utilUpdate(). Referenced by WRR_CBQueue::deque(), CBQueue::deque(), and QueueHandler::handle().
00155 {
00156 double now = Scheduler::instance().clock();
00157 Packet* p = deque();
00158 if (p != 0) {
00159 target_->recv(p, &qh_);
00160 } else {
00161 if (unblock_on_resume_) {
00162 utilUpdate(last_change_, now, blocked_);
00163 last_change_ = now;
00164 blocked_ = 0;
00165 }
00166 else {
00167 utilUpdate(last_change_, now, blocked_);
00168 last_change_ = now;
00169 blocked_ = 1;
00170 }
00171 }
00172 }
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Reimplemented in Agent, and LinkDelay. Definition at line 54 of file connector.h. References NsObject::recv(), and Connector::target_. Referenced by SessionTTLChecker::recv(), TTLChecker::recv(), DequeTrace::recv(), Trace::recv(), TraceIpMac::recv(), TraceIp::recv(), SatDequeTrace::recv(), SALink::recv(), SnoopQueueEDrop::recv(), SnoopQueueTagger::recv(), SnoopQueueDrop::recv(), SnoopQueueOut::recv(), SnoopQueueIn::recv(), PktCounter::recv(), NetworkInterface::recv(), MeasureMod::recv(), Filter::recv(), Connector::recv(), CMUTrace::recv(), CBQClass::recv(), and AddSR::recv().
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Definition at line 413 of file mcache.h. References Queue< T >::size_. Referenced by JoBS::arvAccounting(), JoBS::assignRateDropsADC(), dsREDQueue::deque(), JoBS::dropFront(), JoBS::dropTail(), RedPDQueue::enque(), JoBS::enque(), MediaServer::get_next_segment(), JoBS::pickDroppedRLC(), and FQ::recv().
00413 { return size_; }
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Definition at line 48 of file connector.h. References Connector::target_. Referenced by JoBS::assignRateDropsADC(), FQ::deque(), QSAgent::recv(), and MIPMHAgent::reg().
00048 { return target_; }
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Definition at line 130 of file queue.h. References Queue< T >::blocked_.
00130 { blocked_ = 0; }
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Definition at line 141 of file queue.cc. References Scheduler::clock(), Scheduler::instance(), Queue< T >::total_time_, and Queue< T >::true_ave_. Referenced by REDQueue::deque(), DropTail::deque(), REDQueue::enque(), and DropTail::enque().
00142 {
00143 double now = Scheduler::instance().clock();
00144 double newtime = now - total_time_;
00145 if (newtime > 0.0) {
00146 double oldave = true_ave_;
00147 double oldtime = total_time_;
00148 double newtime = now - total_time_;
00149 true_ave_ = (oldtime * oldave + newtime * queuesize) /now;
00150 total_time_ = now;
00151 }
00152 }
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Definition at line 130 of file queue.cc. References Queue< T >::blocked_, Scheduler::clock(), Scheduler::instance(), Queue< T >::last_change_, Queue< T >::old_util_, and Queue< T >::utilUpdate(). Referenced by QSAgent::recv().
00131 {
00132 double now = Scheduler::instance().clock();
00133
00134 utilUpdate(last_change_, now, blocked_);
00135 last_change_ = now;
00136
00137 return old_util_;
00138
00139 }
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Definition at line 122 of file queue.cc. References Queue< T >::old_util_, and Queue< T >::util_weight_. Referenced by Queue< T >::recv(), Queue< T >::resume(), and Queue< T >::utilization().
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Definition at line 143 of file queue.h. Referenced by Queue< T >::block(), Queue< T >::blocked(), Queue< T >::Queue(), Queue< T >::recv(), FQ::recv(), CBQueue::recv(), PriQueue::recvHighPriority(), Queue< T >::resume(), CBQueue::sched(), Queue< T >::unblock(), and Queue< T >::utilization(). |
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Definition at line 91 of file sfq.cc. Referenced by clear(), deque(), enque(), initsfq(), and SFQ(). |
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Definition at line 90 of file sfq.cc. Referenced by clear(), command(), enque(), initsfq(), and SFQ(). |
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Reimplemented in FECModel, FloodAgent, and LandmarkAgent. Definition at line 66 of file object.h. Referenced by REDQueue::command(), RedPDQueue::command(), PushbackQueue::command(), NsObject::debug(), NsObject::delay_bind_dispatch(), RedPDQueue::enque(), PushbackQueue::enque(), NsObject::isdebug(), NsObject::NsObject(), TfrcAgent::recv(), PushbackQueue::reportDrop(), and REDQueue::reset(). |
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Definition at line 57 of file connector.h. Referenced by Connector::command(), Connector::drop(), and ErrorModel::recv(). |
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Definition at line 416 of file mcache.h. Referenced by Queue< T >::dequeue(), Queue< T >::destroy(), Queue< T >::detach(), Queue< T >::enqueue(), Queue< T >::getHead(), Queue< T >::Queue(), Queue< T >::reset(), and Queue< T >::~Queue(). |
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Definition at line 154 of file queue.h. Referenced by Queue< T >::recv(), Queue< T >::resume(), and Queue< T >::utilization(). |
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Definition at line 155 of file queue.h. Referenced by Queue< T >::utilization(), and Queue< T >::utilUpdate(). |
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Definition at line 145 of file queue.h. Referenced by Queue< T >::recv(), FQ::recv(), PriQueue::recvHighPriority(), Queue< T >::resume(), and CBQueue::sched(). |
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Definition at line 142 of file queue.h. Referenced by Vq::checkPacketForECN(), Vq::enque(), SRR::enque(), RIOQueue::enque(), REMQueue::enque(), REDQueue::enque(), PIQueue::enque(), Marker::enque(), JoBS::enque(), GK::enque(), DropTail::enque(), Demarker::enque(), Queue< T >::limit(), RIOQueue::print_edp(), REDQueue::print_edp(), Queue< T >::Queue(), and PriQueue::recvHighPriority(). |
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Definition at line 417 of file mcache.h. Referenced by Queue< T >::dequeue(), Queue< T >::detach(), Queue< T >::enqueue(), Queue< T >::is_empty(), Queue< T >::Queue(), and Queue< T >::size(). |
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Definition at line 416 of file mcache.h. Referenced by Queue< T >::dequeue(), Queue< T >::detach(), Queue< T >::enqueue(), and Queue< T >::Queue(). |
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Definition at line 150 of file queue.h. Referenced by REDQueue::print_summarystats(), DropTail::print_summarystats(), Queue< T >::reset(), and Queue< T >::updateStats(). |
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Definition at line 149 of file queue.h. Referenced by REDQueue::print_summarystats(), DropTail::print_summarystats(), Queue< T >::reset(), and Queue< T >::updateStats(). |
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Definition at line 144 of file queue.h. Referenced by Queue< T >::Queue(), and Queue< T >::resume(). |
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Definition at line 156 of file queue.h. Referenced by Queue< T >::Queue(), and Queue< T >::utilUpdate(). |
1.3.3