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pFabric.patch
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diff -uNr ns-allinone-2.34-raw/ns-2.34/classifier/classifier-mpath.cc ns-allinone-2.34/ns-2.34/classifier/classifier-mpath.cc
--- ns-allinone-2.34-raw/ns-2.34/classifier/classifier-mpath.cc 2009-06-15 01:35:07.000000000 +0800
+++ ns-allinone-2.34/ns-2.34/classifier/classifier-mpath.cc 2015-09-29 20:33:16.000000000 +0800
@@ -1,4 +1,5 @@
-/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
+/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t
+ -*- */
/*
* Copyright (C) 1997 by the University of Southern California
@@ -50,26 +51,113 @@
#endif
#include "classifier.h"
+#include "ip.h"
class MultiPathForwarder : public Classifier {
public:
- MultiPathForwarder() : ns_(0) {}
- virtual int classify(Packet*) {
- int cl;
- int fail = ns_;
- do {
- cl = ns_++;
- ns_ %= (maxslot_ + 1);
- } while (slot_[cl] == 0 && ns_ != fail);
+ MultiPathForwarder() : ns_(0), nodeid_(0), nodetype_(0), perflow_(0), checkpathid_(0) {
+ bind("nodeid_", &nodeid_);
+ bind("nodetype_", &nodetype_);
+ bind("perflow_", &perflow_);
+ bind("checkpathid_", &checkpathid_);
+ }
+ virtual int classify(Packet* p) {
+ int cl;
+ hdr_ip* h = hdr_ip::access(p);
+ // Mohammad: multipath support
+ // fprintf(stdout, "perflow_ = %d, rcv packet in classifier\n", perflow_);
+ if (perflow_ || checkpathid_)
+ {
+ /*if (h->flowid() >= 10000000) {
+ int fail = ns_;
+ do {
+ cl = ns_++;
+ ns_ %= (maxslot_ + 1);
+ } while (slot_[cl] == 0 && ns_ != fail);
+ return cl;
+ }*/
+
+ struct hkey
+ {
+ int nodeid;
+ nsaddr_t src, dst;
+ int fid;
+ };
+ struct hkey buf_;
+ buf_.nodeid = nodeid_;
+ buf_.src = mshift(h->saddr());
+ buf_.dst = mshift(h->daddr());
+ buf_.fid = h->flowid();
+ /*if (checkpathid_)
+ buf_.prio = h->prio();
+ else
+ buf_.prio = 0;*/
+ char* bufString = (char*) &buf_;
+ int length = sizeof(hkey);
+
+ unsigned int ms_ = (unsigned int) HashString(bufString, length);
+ if (checkpathid_)
+ {
+ int pathNum = h->prio();
+ int pathDig;
+ for (int i = 0; i < nodetype_; i++)
+ {
+ pathDig = pathNum % 8;
+ pathNum /= 8;
+ }
+ //printf("%d: %d->%d\n", nodetype_, h->prio(), pathDig);
+ ms_ += h->prio(); //pathDig;
+ }
+ ms_ %= (maxslot_ + 1);
+ //printf("nodeid = %d, pri = %d, ms = %d\n", nodeid_, buf_.prio, ms_);
+ int fail = ms_;
+ do {
+ cl = ms_++;
+ ms_ %= (maxslot_ + 1);
+ } while (slot_[cl] == 0 && ms_ != fail);
+ //printf("nodeid = %d, pri = %d, cl = %d\n", nodeid_, h->prio(), cl);
+ } else
+ {
+ //hdr_ip* h = hdr_ip::access(p);
+ //if (h->flowid() == 45) {
+ //cl = h->prio() % (maxslot_ + 1);
+ //}
+ //else {
+ int fail = ns_;
+ do {
+ cl = ns_++;
+ ns_ %= (maxslot_ + 1);
+ } while (slot_[cl] == 0 && ns_ != fail);
+ }
+
+
return cl;
}
private:
int ns_;
+ // Mohamamd: adding support for perflow multipath
+ int nodeid_;
+ int nodetype_;
+ int perflow_;
+ int checkpathid_;
+
+ static unsigned int
+ HashString(register const char *bytes,int length)
+ {
+ register unsigned int result;
+ register int i;
+
+ result = 0;
+ for (i = 0; i < length; i++) {
+ result += (result<<3) + *bytes++;
+ }
+ return result;
+ }
};
static class MultiPathClass : public TclClass {
public:
- MultiPathClass() : TclClass("Classifier/MultiPath") {}
+ MultiPathClass() : TclClass("Classifier/MultiPath") {}
TclObject* create(int, const char*const*) {
return (new MultiPathForwarder());
}
diff -uNr ns-allinone-2.34-raw/ns-2.34/common/ip.h ns-allinone-2.34/ns-2.34/common/ip.h
--- ns-allinone-2.34-raw/ns-2.34/common/ip.h 2009-06-15 01:35:45.000000000 +0800
+++ ns-allinone-2.34/ns-2.34/common/ip.h 2013-06-16 23:47:56.000000000 +0800
@@ -61,6 +61,14 @@
ns_addr_t dst_;
int ttl_;
+ /* Mohammad: flag to indicate
+ * the last TCP ack for this flow
+ * had EcnEcho set. This is used by
+ * TBF to determin if flow should be
+ *paced. */
+ int gotecnecho;
+ //abd
+
/* Monarch extn */
// u_int16_t sport_;
// u_int16_t dport_;
@@ -68,6 +76,7 @@
/* IPv6 */
int fid_; /* flow id */
int prio_;
+ int prio_type_; //Shuang
static int offset_;
inline static int& offset() { return offset_; }
@@ -87,6 +96,7 @@
/* ipv6 fields */
int& flowid() { return (fid_); }
int& prio() { return (prio_); }
+ int& prio_type() {return (prio_type_); }
};
#endif
diff -uNr ns-allinone-2.34-raw/ns-2.34/queue/drop-tail.cc ns-allinone-2.34/ns-2.34/queue/drop-tail.cc
--- ns-allinone-2.34-raw/ns-2.34/queue/drop-tail.cc 2009-06-15 01:35:44.000000000 +0800
+++ ns-allinone-2.34/ns-2.34/queue/drop-tail.cc 2013-06-16 23:47:56.000000000 +0800
@@ -87,7 +87,7 @@
if (summarystats) {
Queue::updateStats(qib_?q_->byteLength():q_->length());
}
-
+ //printf("qlim_ = %d, qib_ = %d, mean_pktsize_ = %d\n", qlim_, qib_, mean_pktsize_);
int qlimBytes = qlim_ * mean_pktsize_;
if ((!qib_ && (q_->length() + 1) >= qlim_) ||
(qib_ && (q_->byteLength() + hdr_cmn::access(p)->size()) >= qlimBytes)){
@@ -96,6 +96,77 @@
q_->enque(p);
Packet *pp = q_->deque();
drop(pp);
+ }
+ else if (drop_prio_) {
+ Packet *max_pp = p;
+ int max_prio = 0;
+
+ q_->enque(p);
+ q_->resetIterator();
+ for (Packet *pp = q_->getNext(); pp != 0; pp = q_->getNext()) {
+ if (!qib_ || ( q_->byteLength() - hdr_cmn::access(pp)->size() < qlimBytes)) {
+ hdr_ip* h = hdr_ip::access(pp);
+ int prio = h->prio();
+ if (prio >= max_prio) {
+ max_pp = pp;
+ max_prio = prio;
+ }
+ }
+ }
+ q_->remove(max_pp);
+ drop(max_pp);
+ }
+ else if (drop_smart_) {
+ Packet *max_pp = p;
+ int max_count = 0;
+
+ q_->enque(p);
+ q_->resetIterator();
+ for (Packet *pp = q_->getNext(); pp != 0; pp = q_->getNext()) {
+ hdr_ip* h = hdr_ip::access(pp);
+ FlowKey fkey;
+ fkey.src = h->saddr();
+ fkey.dst = h->daddr();
+ fkey.fid = h->flowid();
+
+ char* fkey_buf = (char*) &fkey;
+ int length = sizeof(fkey);
+ string fkey_string(fkey_buf, length);
+
+ std::tr1::hash<string> string_hasher;
+ size_t signature = string_hasher(fkey_string);
+
+ if (sq_counts_.find(signature) != sq_counts_.end()) {
+ int count = sq_counts_[signature];
+ if (count > max_count) {
+ max_count = count;
+ max_pp = pp;
+ }
+ }
+ }
+ q_->remove(max_pp);
+ /*hdr_ip* h = hdr_ip::access(p);
+ FlowKey fkey;
+ fkey.src = h->saddr();
+ fkey.dst = h->daddr();
+ fkey.fid = h->flowid();
+
+ char* fkey_buf = (char*) &fkey;
+ int length = sizeof(fkey);
+ string fkey_string(fkey_buf, length);
+
+ std::tr1::hash<string> string_hasher;
+ size_t p_sig = string_hasher(fkey_string);
+ h = hdr_ip::access(max_pp);
+ fkey.src = h->saddr();
+ fkey.dst = h->daddr();
+ fkey.fid = h->flowid();
+
+ string fkey_string2(fkey_buf, length);
+ size_t maxpp_sig = string_hasher(fkey_string2);
+
+ printf("%s, enqueued %d, dropped %d instead\n", this->name(), p_sig, maxpp_sig);*/
+ drop(max_pp);
} else {
drop(p);
}
@@ -130,7 +201,96 @@
if (summarystats && &Scheduler::instance() != NULL) {
Queue::updateStats(qib_?q_->byteLength():q_->length());
}
- return q_->deque();
+ //printf("drop_smart_ = %d, sq_limit = %d \n", drop_smart_, sq_limit_);
+
+ /*Shuang: deque the packet with the highest priority */
+ if (deque_prio_) {
+ q_->resetIterator();
+ Packet *p = q_->getNext();
+ int highest_prio_;
+ if (p != 0)
+ highest_prio_ = hdr_ip::access(p)->prio();
+ else
+ return 0;
+ for (Packet *pp = q_->getNext(); pp != 0; pp = q_->getNext()) {
+ hdr_ip* h = hdr_ip::access(pp);
+ int prio = h->prio();
+ //deque from the head
+ if (prio < highest_prio_) {
+ p = pp;
+ highest_prio_ = prio;
+ }
+ }
+ if (keep_order_) {
+ q_->resetIterator();
+ hdr_ip* hp = hdr_ip::access(p);
+ for (Packet *pp = q_->getNext(); pp != p; pp = q_->getNext()) {
+ hdr_ip* h = hdr_ip::access(pp);
+ if (h->saddr() == hp->saddr()
+ && h->daddr() == hp->daddr()
+ && h->flowid() == hp->flowid()) {
+ p = pp;
+ break;
+ }
+ }
+ }
+
+ //if (hdr_ip::access(p)->flowid() == 1) {
+ // q_->resetIterator();
+ // printf("DEQUE: flow %d queue_length %d\n", hdr_ip::access(p)->flowid(), q_->byteLength());
+ // for (Packet *pp = q_->getNext(); pp != 0; pp = q_->getNext()) {
+ // hdr_ip* h = hdr_ip::access(pp);
+ // printf("( %d %d )", h->flowid(), h->prio());
+ // }
+ // printf("\n");
+ // fflush(stdout);
+ //}
+
+ q_->remove(p);
+ return p;
+ } else
+ if (drop_smart_) {
+ Packet *p = q_->deque();
+ if (p) {
+ hdr_ip* h = hdr_ip::access(p);
+ FlowKey fkey;
+ fkey.src = h->saddr();
+ fkey.dst = h->daddr();
+ fkey.fid = h->flowid();
+
+ char* fkey_buf = (char*) &fkey;
+ int length = sizeof(fkey);
+ string fkey_string(fkey_buf, length);
+
+ std::tr1::hash<string> string_hasher;
+ size_t signature = string_hasher(fkey_string);
+ sq_queue_.push(signature);
+
+ if (sq_counts_.find(signature) != sq_counts_.end()) {
+ sq_counts_[signature]++;
+ //printf("%s packet with signature %d, count = %d, qsize = %d\n", this->name(), signature, sq_counts_[signature], sq_queue_.size());
+ }
+ else {
+ sq_counts_[signature] = 1;
+ //printf("%s first packet with signature %d, count = %d, qsize = %d\n", this->name(), signature, sq_counts_[signature], sq_queue_.size());
+ }
+
+ if (sq_queue_.size() > sq_limit_) {
+ //printf("%s we are full %d %d\n", this->name(), sq_counts_.size(), sq_queue_.size());
+ size_t temp = sq_queue_.front(); sq_queue_.pop();
+ sq_counts_[temp]--;
+ if (sq_counts_[temp] == 0)
+ sq_counts_.erase(temp);
+
+ //printf("%s removed front sig = %d, no longer full %d %d\n", this->name(), temp, sq_counts_.size(), sq_queue_.size());
+
+ }
+ }
+ return p;
+
+ } else {
+ return q_->deque();
+ }
}
void DropTail::print_summarystats()
diff -uNr ns-allinone-2.34-raw/ns-2.34/queue/drop-tail.h ns-allinone-2.34/ns-2.34/queue/drop-tail.h
--- ns-allinone-2.34-raw/ns-2.34/queue/drop-tail.h 2009-06-15 01:35:44.000000000 +0800
+++ ns-allinone-2.34/ns-2.34/queue/drop-tail.h 2013-06-16 23:47:56.000000000 +0800
@@ -37,10 +37,35 @@
#ifndef ns_drop_tail_h
#define ns_drop_tail_h
-#include <string.h>
+/*#ifdef __GNUC__
+#include <ext/hash_map>
+#else
+#include <hash_map>
+#endif
+
+
+namespace std
+{
+ using namespace __gnu_cxx;
+}
+*/
+#include <tr1/unordered_map>
+#include <tr1/functional>
+#include <queue>
+
+using std::queue;
+using std::tr1::unordered_map;
+//using std::tr1::functional;
+
+#include <string>
#include "queue.h"
#include "config.h"
+typedef struct flowkey {
+ nsaddr_t src, dst;
+ int fid;
+} FlowKey;
+
/*
* A bounded, drop-tail queue
*/
@@ -50,27 +75,44 @@
q_ = new PacketQueue;
pq_ = q_;
bind_bool("drop_front_", &drop_front_);
+ bind_bool("drop_smart_", &drop_smart_);
+ bind_bool("drop_prio_", &drop_prio_);
+ bind_bool("deque_prio_", &deque_prio_);
+ bind_bool("keep_order_", &keep_order_);
bind_bool("summarystats_", &summarystats);
bind_bool("queue_in_bytes_", &qib_); // boolean: q in bytes?
bind("mean_pktsize_", &mean_pktsize_);
+ bind("sq_limit_", &sq_limit_);
// _RENAMED("drop-front_", "drop_front_");
}
~DropTail() {
delete q_;
}
- protected:
void reset();
int command(int argc, const char*const* argv);
void enque(Packet*);
Packet* deque();
+ protected:
void shrink_queue(); // To shrink queue and drop excessive packets.
PacketQueue *q_; /* underlying FIFO queue */
- int drop_front_; /* drop-from-front (rather than from tail) */
+ int drop_front_; /* drop-from-front (rather than from tail) */
int summarystats;
void print_summarystats();
int qib_; /* bool: queue measured in bytes? */
int mean_pktsize_; /* configured mean packet size in bytes */
+ // Mohammad: for smart dropping
+ int drop_smart_;
+ // Shuang: for priority dropping
+ int drop_prio_;
+ int deque_prio_;
+ int keep_order_;
+
+
+ unsigned int sq_limit_;
+ unordered_map<size_t, int> sq_counts_;
+ std::queue<size_t> sq_queue_;
+
};
#endif
diff -uNr ns-allinone-2.34-raw/ns-2.34/queue/queue-monitor.cc ns-allinone-2.34/ns-2.34/queue/queue-monitor.cc
--- ns-allinone-2.34-raw/ns-2.34/queue/queue-monitor.cc 1970-01-01 08:00:00.000000000 +0800
+++ ns-allinone-2.34/ns-2.34/queue/queue-monitor.cc 2013-06-16 23:47:56.000000000 +0800
@@ -0,0 +1,640 @@
+/* -*- 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 MASH Research
+ * Group at the University of California Berkeley.
+ * 4. Neither the name of the University nor of the Research Group 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.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "@(#) $Header: /cvsroot/nsnam/ns-2/tools/queue-monitor.cc,v 1.29 2004/10/28 01:21:41 sfloyd Exp $";
+#endif
+
+#include "queue-monitor.h"
+#include "trace.h"
+#include <math.h>
+
+#include "ip.h"
+
+int QueueMonitor::command(int argc, const char*const* argv)
+{
+ Tcl& tcl = Tcl::instance();
+
+ if (argc == 2) {
+ if (strcmp(argv[1], "get-bytes-integrator") == 0) {
+ if (bytesInt_)
+ tcl.resultf("%s", bytesInt_->name());
+ else
+ tcl.resultf("");
+ return (TCL_OK);
+ }
+ if (strcmp(argv[1], "get-pkts-integrator") == 0) {
+ if (pktsInt_)
+ tcl.resultf("%s", pktsInt_->name());
+ else
+ tcl.resultf("");
+ return (TCL_OK);
+ }
+ if (strcmp(argv[1], "get-delay-samples") == 0) {
+ if (delaySamp_)
+ tcl.resultf("%s", delaySamp_->name());
+ else
+ tcl.resultf("");
+ return (TCL_OK);
+ }
+ if (strcmp(argv[1], "printRTTs") == 0) {
+ if (keepRTTstats_ && channel1_) {
+ printRTTs();
+ }
+ return (TCL_OK);
+ }
+ if (strcmp(argv[1], "printSeqnos") == 0) {
+ if (keepSeqnoStats_ && channel1_) {
+ printSeqnos();
+ }
+ return (TCL_OK);
+ }
+ }
+
+ if (argc == 3) {
+ if (strcmp(argv[1], "set-bytes-integrator") == 0) {
+ bytesInt_ = (Integrator *)
+ TclObject::lookup(argv[2]);
+ if (bytesInt_ == NULL)
+ return (TCL_ERROR);
+ return (TCL_OK);
+ }
+ if (strcmp(argv[1], "set-pkts-integrator") == 0) {
+ pktsInt_ = (Integrator *)
+ TclObject::lookup(argv[2]);
+ if (pktsInt_ == NULL)
+ return (TCL_ERROR);
+ return (TCL_OK);
+ }
+ if (strcmp(argv[1], "set-delay-samples") == 0) {
+ delaySamp_ = (Samples*)
+ TclObject::lookup(argv[2]);
+ if (delaySamp_ == NULL)
+ return (TCL_ERROR);
+ return (TCL_OK);
+ }
+ if (strcmp(argv[1], "trace") == 0) {
+ // for printStats
+ int mode;
+ const char* id = argv[2];
+ channel_ = Tcl_GetChannel(tcl.interp(), (char*)id, &mode);
+ if (channel_ == 0) {
+ tcl.resultf("trace: can't attach %s for writing", id);
+ return (TCL_ERROR);
+ }
+ return (TCL_OK);
+ }
+ if (strcmp(argv[1], "traceDist") == 0) {
+ // for printRTTs and printSeqnos distributions
+ int mode;
+ const char* id = argv[2];
+ channel1_ = Tcl_GetChannel(tcl.interp(), (char*)id, &mode);
+ if (channel1_ == 0) {
+ tcl.resultf("trace: can't attach %s for writing", id);
+ return (TCL_ERROR);
+ }
+ return (TCL_OK);
+ }
+ }
+ if (argc == 4) {
+ if (strcmp(argv[1], "set-src-dst") == 0) {
+ srcId_ = atoi(argv[2]);
+ dstId_ = atoi(argv[3]);
+ return (TCL_OK);
+ }
+ }
+ return TclObject::command(argc, argv); // else control reaches end of
+ // non-void function, see? :-)
+}
+
+static class QueueMonitorClass : public TclClass {
+ public:
+ QueueMonitorClass() : TclClass("QueueMonitor") {}
+ TclObject* create(int, const char*const*) {
+ return (new QueueMonitor());
+ }
+} queue_monitor_class;
+
+
+void
+QueueMonitor::printRTTs() {
+ int i, n, topBin, MsPerBin;
+ char wrk[500];
+
+ topBin = maxRTT_ * binsPerSec_;
+ MsPerBin = int(1000/binsPerSec_);
+ double now = Scheduler::instance().clock();
+ sprintf(wrk, "Distribution of RTTs, %d ms bins, time %4.2f\n", MsPerBin, now);
+ n = strlen(wrk); wrk[n] = 0;
+ (void)Tcl_Write(channel1_, wrk, n);
+ for (i = 0; i < topBin; i++) {
+ if (RTTbins_[i] > 0) {
+ sprintf(wrk, "%d to %d ms: frac %5.3f num %d time %4.2f\n",
+ i*MsPerBin, (i+1)*MsPerBin,
+ (double)RTTbins_[i]/numRTTs_,
+ RTTbins_[i], now);
+ n = strlen(wrk); wrk[n] = 0;
+ (void)Tcl_Write(channel1_, wrk, n);
+ }
+ }
+ i = topBin - 1;
+ if (RTTbins_[i] > 0) {
+ sprintf(wrk, "The last bin might also contain RTTs >= %d ms.\n",
+ (i+1)*MsPerBin);
+ n = strlen(wrk); wrk[n] = 0;
+ (void)Tcl_Write(channel1_, wrk, n);
+ }
+}
+
+void
+QueueMonitor::printSeqnos() {
+ int i, n, topBin;
+ char wrk[500];
+
+ topBin = int(maxSeqno_ / SeqnoBinSize_);
+ double now = Scheduler::instance().clock();
+ sprintf(wrk, "Distribution of Seqnos, %d seqnos per bin, time %4.2f\n",
+ SeqnoBinSize_, now);
+ n = strlen(wrk); wrk[n] = 0;
+ (void)Tcl_Write(channel1_, wrk, n);
+ for (i = 0; i < topBin; i++) {
+ if (SeqnoBins_[i] > 0) {
+ sprintf(wrk, "%d to %d seqnos: frac %5.3f num %d time %4.2f\n",
+ i*SeqnoBinSize_, (i+1)*SeqnoBinSize_ - 1,
+ (double)SeqnoBins_[i]/numSeqnos_,
+ SeqnoBins_[i], now);
+ n = strlen(wrk); wrk[n] = 0;
+ (void)Tcl_Write(channel1_, wrk, n);
+ }
+ }
+ i = topBin - 1;
+ if (SeqnoBins_[i] > 0) {
+ sprintf(wrk, "The last bin might also contain Seqnos >= %d. \n",
+ (i+1)*SeqnoBinSize_);
+ n = strlen(wrk); wrk[n] = 0;
+ (void)Tcl_Write(channel1_, wrk, n);
+ }
+}
+
+void
+QueueMonitor::printStats() {
+ char wrk[500];
+ int n;
+ double now = Scheduler::instance().clock();
+ sprintf(wrk, "q -t "TIME_FORMAT" -s %d -d %d -l %d -p %d", now, srcId_, dstId_, size_, pkts_);
+ n = strlen(wrk);
+ wrk[n] = '\n';
+ wrk[n+1] = 0;
+ (void)Tcl_Write(channel_, wrk, n+1);
+ wrk[n] = 0;
+}
+
+// packet arrival to a queue
+void QueueMonitor::in(Packet* p)
+{
+ hdr_cmn* hdr = hdr_cmn::access(p);
+ double now = Scheduler::instance().clock();
+ int pktsz = hdr->size();
+ hdr_flags* pf = hdr_flags::access(p);
+
+ last_pkt_ = Scheduler::instance().clock();
+ if (parrivals_ == 0) {
+ first_pkt_ = last_pkt_;
+ }
+
+ if (pf->qs()) {
+ qs_pkts_++;
+ qs_bytes_ += pktsz;
+ }
+
+ //if enabled estimate rate now
+ if (estimate_rate_) {
+ estimateRate(p);
+ }
+ else {
+ prevTime_ = now;
+ }
+
+ //Shuang: count small flow arrivals
+ hdr_ip* iph = hdr_ip::access(p);
+ int prio = iph->prio() / 1460;
+ if (prio < 100000 && pktsz > 100) {
+ karrivals_[calc_prio(prio)] ++;
+ }
+
+ //Shuang: count ack arrivals
+ //hdr_rcp* rh = hdr_rcp::access(p);
+ //if (rh->RCP_pkt_type() == RCP_ACK) {
+ // ack_arrivals_++;
+ //}
+
+
+ barrivals_ += pktsz;
+ parrivals_++;
+ size_ += pktsz;
+ pkts_++;
+ if (bytesInt_)
+ bytesInt_->newPoint(now, double(size_));
+ if (pktsInt_)
+ pktsInt_->newPoint(now, double(pkts_));
+ if (delaySamp_)
+ hdr->timestamp() = now;
+ if (channel_)
+ printStats();
+
+}
+
+void QueueMonitor::out(Packet* p)
+{
+ hdr_cmn* hdr = hdr_cmn::access(p);
+ hdr_flags* pf = hdr_flags::access(p);
+ double now = Scheduler::instance().clock();
+ int pktsz = hdr->size();
+
+ if (pf->ce() && pf->ect())
+ pmarks_++;
+ size_ -= pktsz;
+ pkts_--;
+ bdepartures_ += pktsz;
+ pdepartures_++;
+
+ //Shuang: count ack departure
+ //hdr_rcp* rh = hdr_rcp::access(p);
+ //if (rh->RCP_pkt_type() == RCP_ACK) {
+ // ack_departures_++;
+ //}
+
+ if (bytesInt_)
+ bytesInt_->newPoint(now, double(size_));
+ if (pktsInt_)
+ pktsInt_->newPoint(now, double(pkts_));
+ if (delaySamp_)
+ delaySamp_->newPoint(now - hdr->timestamp());
+
+ if (keepRTTstats_) {
+ keepRTTstats(p);
+ }
+ if (keepSeqnoStats_) {
+ keepSeqnoStats(p);
+ }
+ if (channel_)
+ printStats();
+}
+
+void QueueMonitor::drop(Packet* p)
+{
+ hdr_cmn* hdr = hdr_cmn::access(p);
+ double now = Scheduler::instance().clock();
+ int pktsz = hdr->size();
+ hdr_flags* pf = hdr_flags::access(p);
+
+ size_ -= pktsz;
+ pkts_--;
+ bdrops_ += pktsz;
+ pdrops_++;
+
+ //Shuang: count small flow dropping
+ hdr_ip* iph = hdr_ip::access(p);
+ int prio = iph->prio() / 1460;
+ if (prio < 100000 && pktsz > 100) {
+ kdrops_[calc_prio(prio)] ++;
+ }
+ //Shuang: count ack dropping
+ //hdr_rcp* rh = hdr_rcp::access(p);
+ //if (rh->RCP_pkt_type() == RCP_ACK) {
+ // ack_drops_++;
+ //}
+
+
+ if (pf->qs())
+ qs_drops_++;
+
+ if (bytesInt_)
+ bytesInt_->newPoint(now, double(size_));
+ if (pktsInt_)
+ pktsInt_->newPoint(now, double(pkts_));
+ if (channel_)
+ printStats();
+}
+
+int QueueMonitor::calc_prio(int prio)
+{
+ if (prio <= 10)
+ return prio;
+ if (prio <= 100)
+ return 10 + prio / 10;
+ if (prio <= 1000)
+ return 20 + prio / 100;
+ if (prio <= 10000)
+ return 30 + prio / 1000;
+ if (prio <= 100000)
+ return 40 + prio / 10000;
+}
+
+// The procedure to estimate the rate of the incoming traffic
+void QueueMonitor::estimateRate(Packet *pkt) {
+
+ hdr_cmn* hdr = hdr_cmn::access(pkt);
+ int pktSize = hdr->size() << 3; /* length of the packet in bits */
+
+ double now = Scheduler::instance().clock();
+ double timeGap = ( now - prevTime_);
+
+ if (timeGap == 0) {
+ temp_size_ += pktSize;
+ return;
+ }
+ else {
+ pktSize+= temp_size_;
+ temp_size_ = 0;
+ }
+
+ prevTime_ = now;
+
+ estRate_ = (1 - exp(-timeGap/k_))*((double)pktSize)/timeGap + exp(-timeGap/k_)*estRate_;
+}
+
+//The procedure to keep RTT statistics.
+void QueueMonitor::keepRTTstats(Packet *pkt) {
+ int i, j, topBin, rttInMs, MsPerBin;
+ hdr_cmn* hdr = hdr_cmn::access(pkt);
+ packet_t t = hdr->ptype();
+ if (t == PT_TCP || t == PT_HTTP || t == PT_FTP || t == PT_TELNET) {
+ hdr_tcp *tcph = hdr_tcp::access(pkt);
+ rttInMs = tcph->last_rtt();
+ if (rttInMs < 0) rttInMs = 0;
+ topBin = maxRTT_ * binsPerSec_;
+ if (numRTTs_ == 0) {
+ RTTbins_ = (int *)malloc(sizeof(int)*topBin);
+ for (i = 0; i < topBin; i++) {
+ RTTbins_[i] = 0;
+ }
+ }
+ MsPerBin = int(1000/binsPerSec_);
+ j = (int)(rttInMs/MsPerBin);
+ if (j < 0) j = 0;
+ if (j >= topBin) j = topBin - 1;
+ ++ RTTbins_[j];
+ ++ numRTTs_;
+ }
+}
+
+//The procedure to keep Seqno (sequence number) statistics.
+void QueueMonitor::keepSeqnoStats(Packet *pkt) {
+ int i, j, topBin, seqno;
+ hdr_cmn* hdr = hdr_cmn::access(pkt);
+ packet_t t = hdr->ptype();
+ if (t == PT_TCP || t == PT_HTTP || t == PT_FTP || t == PT_TELNET) {
+ hdr_tcp *tcph = hdr_tcp::access(pkt);
+ seqno = tcph->seqno();
+ if (seqno < 0) seqno = 0;
+ topBin = int(maxSeqno_ / SeqnoBinSize_);
+ if (numSeqnos_ == 0) {
+ SeqnoBins_ = (int *)malloc(sizeof(int)*topBin);
+ for (i = 0; i < topBin; i++) {
+ SeqnoBins_[i] = 0;
+ }
+ }
+ j = (int)(seqno/SeqnoBinSize_);
+ if (j < 0) j = 0;
+ if (j >= topBin) j = topBin - 1;
+ ++ SeqnoBins_[j];
+ ++ numSeqnos_;
+ }
+}
+
+/* ##############
+ * Tcl Stuff
+ * ##############
+ */
+
+static class SnoopQueueInClass : public TclClass {
+public:
+ SnoopQueueInClass() : TclClass("SnoopQueue/In") {}
+ TclObject* create(int, const char*const*) {
+ return (new SnoopQueueIn());
+ }
+} snoopq_in_class;
+
+static class SnoopQueueOutClass : public TclClass {
+public:
+ SnoopQueueOutClass() : TclClass("SnoopQueue/Out") {}
+ TclObject* create(int, const char*const*) {
+ return (new SnoopQueueOut());
+ }
+} snoopq_out_class;
+
+static class SnoopQueueDropClass : public TclClass {
+public:
+ SnoopQueueDropClass() : TclClass("SnoopQueue/Drop") {}
+ TclObject* create(int, const char*const*) {
+ return (new SnoopQueueDrop());
+ }
+} snoopq_drop_class;
+
+static class SnoopQueueEDropClass : public TclClass {
+public:
+ SnoopQueueEDropClass() : TclClass("SnoopQueue/EDrop") {}
+ TclObject* create(int, const char*const*) {
+ return (new SnoopQueueEDrop);
+ }
+} snoopq_edrop_class;
+
+/* Added by Yun Wang, for use of In/Out tagger */
+static class SnoopQueueTaggerClass : public TclClass {
+public:
+ SnoopQueueTaggerClass() : TclClass("SnoopQueue/Tagger") {}
+ TclObject* create(int, const char*const*) {
+ return (new SnoopQueueTagger);
+ }
+} snoopq_tagger_class;
+
+static class QueueMonitorEDClass : public TclClass {
+public:
+ QueueMonitorEDClass() : TclClass("QueueMonitor/ED") {}
+ TclObject* create(int, const char*const*) {
+ return (new EDQueueMonitor);
+ }
+} queue_monitor_ed_class;
+
+
+/* ############################################################
+ * a 'QueueMonitorCompat', which is used by the compat
+ * code to produce the link statistics used available in ns-1
+ *
+ * in ns-1, the counters are the number of departures
+ * ############################################################
+ */
+
+QueueMonitorCompat::QueueMonitorCompat()
+{
+ memset(pkts_, 0, sizeof(pkts_));
+ memset(bytes_, 0, sizeof(bytes_));
+ memset(drops_, 0, sizeof(drops_));
+ memset(flowstats_, 0, sizeof(flowstats_));
+}
+
+
+/*
+ * create an entry in the flowstats_ array.
+ */
+
+void
+QueueMonitorCompat::flowstats(int flowid)
+{
+ Tcl& tcl = Tcl::instance();
+
+ /*
+ * here is the deal. we are in C code. we'd like to do
+ * flowstats_[flowid] = new Samples;
+ * but, we want to create an object that can be
+ * referenced via tcl. (in particular, we want ->name_
+ * to be valid.)
+ *
+ * so, how do we do this?
+ *
+ * well, the answer is, call tcl to create it. then,
+ * do a lookup on the result from tcl!
+ */
+
+ tcl.evalf("new Samples");
+ flowstats_[flowid] = (Samples*)TclObject::lookup(tcl.result());
+ if (flowstats_[flowid] == 0) {
+ abort();
+ /*NOTREACHED*/
+ }
+}
+
+
+void QueueMonitorCompat::out(Packet* pkt)
+{
+ hdr_cmn* hdr = hdr_cmn::access(pkt);
+ hdr_ip* iph = hdr_ip::access(pkt);
+ double now = Scheduler::instance().clock();
+ int fid = iph->flowid();
+
+ if (fid >= MAXFLOW) {
+ abort();
+ /*NOTREACHED*/
+ }
+ // printf("QueueMonitorCompat::out(), fid=%d\n", fid);
+ bytes_[fid] += hdr_cmn::access(pkt)->size();
+ pkts_[fid]++;