DestHashClassifier Class Reference

#include <classifier-hash.h>

Inheritance diagram for DestHashClassifier:

HashClassifier Classifier NsObject TclObject Handler Collaboration diagram for DestHashClassifier:

Collaboration graph
[legend]

Detailed Description

Definition at line 171 of file classifier-hash.h.

Public Types

enum  classify_ret { ONCE = -2, TWICE = -1 }

Public Member Functions

int allocPort (NsObject *)
int classify (Packet *p)
virtual void clear (int slot)
virtual int command (int argc, const char *const *argv)
virtual void debug (const char *fmt,...)
virtual int delay_bind_dispatch (const char *varName, const char *localName, TclObject *tracer)
virtual void delay_bind_init_all ()
 DestHashClassifier ()
virtual void do_install (char *dst, NsObject *target)
int do_set_hash (nsaddr_t src, nsaddr_t dst, int fid, int slot)
virtual NsObject * find (Packet *)
virtual void install (int slot, NsObject *)
int install_next (NsObject *node)
int isdebug () const
virtual long lookup (Packet *p)
int maxslot () const
int mshift (int val)
virtual void recv (Packet *p, const char *s)
virtual void recv (Packet *p, Handler *h)
virtual void recvOnly (Packet *)
void set_default (int slot)
void set_default_target (NsObject *obj)
virtual void set_table_size (int level, int nn)
void set_table_size (int nn)
NsObject * slot (int slot)
virtual long unknown (Packet *p)

Protected Member Functions

void alloc (int)
long get_hash (nsaddr_t src, nsaddr_t dst, int fid)
virtual int getnxt (NsObject *)
void handle (Event *)
const char * hashkey (nsaddr_t, nsaddr_t dst, int)
long lookup (nsaddr_t src, nsaddr_t dst, int fid)
int newflow (Packet *pkt)
void reset ()
int set_hash (nsaddr_t src, nsaddr_t dst, int fid, long slot)

Protected Attributes

hkey buf_
int debug_
int default_
NsObject * default_target_
Tcl_HashTable ht_
int keylen_
int mask_
int maxslot_
int nsize_
int nslot_
int offset_
int shift_
NsObject ** slot_

Member Enumeration Documentation

enum Classifier::classify_ret [inherited]
 

Enumerator:
ONCE 
TWICE 

Definition at line 64 of file classifier.h.

00064 {ONCE= -2, TWICE= -1};

Constructor & Destructor Documentation

DestHashClassifier::DestHashClassifier (   )  [inline]
 

Definition at line 173 of file classifier-hash.h.

00173 : HashClassifier(TCL_ONE_WORD_KEYS) {}

Member Function Documentation

void Classifier::alloc (  int   )  [protected, inherited]
 

Definition at line 79 of file classifier.cc.

References Classifier::nsize_, Classifier::nslot_, and Classifier::slot_.

Referenced by ReservePortClassifier::command(), ReserveAddressClassifier::command(), Classifier::getnxt(), ReservePortClassifier::getnxt(), ReserveAddressClassifier::getnxt(), and Classifier::install().

00080 {
00081     NsObject** old = slot_;
00082     int n = nslot_;
00083     if (old == 0) 
00084         if (nsize_ != 0) {
00085             //printf("classifier %x set to %d....%dth visit\n", this, nsize_, i++);
00086             nslot_ = nsize_;
00087         }
00088         else {
00089             //printf("classifier %x set to 32....%dth visit\n", this, j++);
00090             nslot_ = 32;
00091         }
00092     while (nslot_ <= slot) 
00093         nslot_ <<= 1;
00094     slot_ = new NsObject*[nslot_];
00095     memset(slot_, 0, nslot_ * sizeof(NsObject*));
00096     for (int i = 0; i < n; ++i)
00097         slot_[i] = old[i];
00098     delete [] old;
00099 }

int Classifier::allocPort (  NsObject *   )  [inherited]
 

Definition at line 120 of file classifier.cc.

References Classifier::getnxt().

00121 {
00122     return getnxt (nullagent);
00123 }

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int DestHashClassifier::classify (  Packet *  p  )  [virtual]
 

Reimplemented from HashClassifier.

Definition at line 182 of file classifier-hash.cc.

References HashClassifier::default_, HashClassifier::lookup(), Classifier::maxslot_, and Classifier::slot().

00183 {
00184     int slot= lookup(p);
00185     if (slot >= 0 && slot <=maxslot_)
00186         return (slot);
00187     else if (default_ >= 0)
00188         return (default_);
00189     return -1;
00190 } // HashClassifier::classify

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void Classifier::clear (  int  slot  )  [virtual, inherited]
 

Reimplemented in ReserveAddressClassifier, and ReservePortClassifier.

Definition at line 111 of file classifier.cc.

References Classifier::maxslot_, and Classifier::slot_.

Referenced by Classifier::command(), and HierClassifier::command().

00112 {
00113     slot_[slot] = 0;
00114     if (slot == maxslot_) {
00115         while (--maxslot_ >= 0 && slot_[maxslot_] == 0)
00116             ;
00117     }
00118 }

int DestHashClassifier::command (  int  argc,
const char *const *  argv
)  [virtual]
 

Reimplemented from HashClassifier.

Definition at line 200 of file classifier-hash.cc.

References HashClassifier::command(), do_install(), and SMALL_LEN.

00201 {
00202     if (argc == 4) {
00203         // $classifier install $dst $node
00204         if (strcmp(argv[1], "install") == 0) {
00205             char dst[SMALL_LEN];
00206             strcpy(dst, argv[2]);
00207             NsObject *node = (NsObject*)TclObject::lookup(argv[3]);
00208             //nsaddr_t dst = atoi(argv[2]);
00209             do_install(dst, node); 
00210             return TCL_OK;
00211             //int slot = getnxt(node);
00212             //install(slot, node);
00213             //if (set_hash(0, dst, 0, slot) >= 0)
00214             //return TCL_OK;
00215             //else
00216             //return TCL_ERROR;
00217         } // if
00218     }
00219     return(HashClassifier::command(argc, argv));
00220 } // command

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void NsObject::debug (  const char *  fmt,
  ...
)  [virtual, inherited]
 

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 }

int NsObject::delay_bind_dispatch (  const char *  varName,
const char *  localName,
TclObject *  tracer
)  [virtual, inherited]
 

Reimplemented in BayFullTcpAgent, Agent, MPLSAddressClassifier, LDPAgent, HbAfterRtoSctpAgent, MfrHbAfterRtoSctpAgent, MfrTimestampSctpAgent, MultipleFastRtxSctpAgent, NewRenoSctpAgent, TimestampSctpAgent, SctpAgent, FullTcpAgent, SackFullTcpAgent, RFC793eduTcpAgent, TcpSink, TcpAgent, VegasTcpAgent, XcpAgent, and XcpSink.

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 }

void NsObject::delay_bind_init_all (   )  [virtual, inherited]
 

Reimplemented in BayFullTcpAgent, Agent, MPLSAddressClassifier, LDPAgent, HbAfterRtoSctpAgent, MfrHbAfterRtoSctpAgent, MfrTimestampSctpAgent, MultipleFastRtxSctpAgent, NewRenoSctpAgent, TimestampSctpAgent, SctpAgent, FullTcpAgent, SackFullTcpAgent, RFC793eduTcpAgent, TcpSink, TcpAgent, VegasTcpAgent, XcpAgent, and XcpSink.

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 }

void DestHashClassifier::do_install (  char *  dst,
NsObject *  target
)  [virtual]
 

Reimplemented from Classifier.

Definition at line 192 of file classifier-hash.cc.

References Classifier::getnxt(), Classifier::install(), HashClassifier::set_hash(), and Classifier::slot().

Referenced by command().

00192                                                                {
00193     nsaddr_t d = atoi(dst);
00194     int slot = getnxt(target);
00195     install(slot, target); 
00196     if (set_hash(0, d, 0, slot) < 0)
00197         fprintf(stderr, "DestHashClassifier::set_hash from within DestHashClassifier::do_install returned value < 0");
00198 }

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int HashClassifier::do_set_hash (  nsaddr_t  src,
nsaddr_t  dst,
int  fid,
int  slot
)  [inline, inherited]
 

Definition at line 67 of file classifier-hash.h.

References HashClassifier::set_hash().

Referenced by ManualRoutingModule::add_route().

00067                                                                    {
00068         return (set_hash(src,dst,fid,slot));
00069     }

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NsObject * Classifier::find (  Packet *   )  [virtual, inherited]
 

Reimplemented in BcastAddressClassifier, QSClassifier, NixClassifier, and SRClassifier.

Definition at line 159 of file classifier.cc.

References Classifier::classify(), Classifier::default_target_, Classifier::nslot_, Classifier::slot_, and Classifier::TWICE.

Referenced by FlowMon::drop(), FlowMon::edrop(), FlowMon::find(), FlowMon::in(), Tagger::in(), FlowMon::mon_edrop(), FlowMon::out(), MIPDecapsulator::recv(), Classifier::recv(), MacClassifier::recv(), MCastBSTClassifier::recv(), and SctpAgent::SetSource().

00160 {
00161     NsObject* node = NULL;
00162     int cl = classify(p);
00163     if (cl < 0 || cl >= nslot_ || (node = slot_[cl]) == 0) { 
00164         if (default_target_) 
00165             return default_target_;
00166         /*
00167          * Sigh.  Can't pass the pkt out to tcl because it's
00168          * not an object.
00169          */
00170         Tcl::instance().evalf("%s no-slot %ld", name(), cl);
00171         if (cl == TWICE) {
00172             /*
00173              * Try again.  Maybe callback patched up the table.
00174              */
00175             cl = classify(p);
00176             if (cl < 0 || cl >= nslot_ || (node = slot_[cl]) == 0)
00177                 return (NULL);
00178         }
00179     }
00180     return (node);
00181 }

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long HashClassifier::get_hash (  nsaddr_t  src,
nsaddr_t  dst,
int  fid
)  [inline, protected, inherited]
 

Definition at line 116 of file classifier-hash.h.

References HashClassifier::hashkey(), and HashClassifier::ht_.

Referenced by HashClassifier::command(), and HashClassifier::lookup().

00116                                                        {
00117         Tcl_HashEntry *ep= Tcl_FindHashEntry(&ht_, 
00118                              hashkey(src, dst, fid)); 
00119         if (ep)
00120             return (long)Tcl_GetHashValue(ep);
00121         return -1;
00122     }

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int Classifier::getnxt (  NsObject *   )  [protected, virtual, inherited]
 

Reimplemented in ReserveAddressClassifier, and ReservePortClassifier.

Definition at line 125 of file classifier.cc.

References Classifier::alloc(), Classifier::nslot_, and Classifier::slot_.

Referenced by Classifier::allocPort(), Classifier::command(), and do_install().

00126 {
00127     int i;
00128     for (i=0; i < nslot_; i++)
00129         if (slot_[i]==0 || slot_[i]==nullagent)
00130             return i;
00131     i=nslot_;
00132     alloc(nslot_);
00133     return i;
00134 }

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void NsObject::handle (  Event *   )  [protected, virtual, inherited]
 

Implements Handler.

Reimplemented in LinkDelay, LL, AckRecons, and Snoop.

Definition at line 91 of file object.cc.

References NsObject::recv().

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

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const char* DestHashClassifier::hashkey (  nsaddr_t  ,
nsaddr_t  dst,
int 
)  [inline, protected, virtual]
 

Implements HashClassifier.

Definition at line 178 of file classifier-hash.h.

References Classifier::mshift().

00178                                                      {
00179         long key = mshift(dst);
00180         return (const char*) key;
00181     }

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void Classifier::install (  int  slot,
NsObject * 
)  [virtual, inherited]
 

Reimplemented in MPLSAddressClassifier.

Definition at line 102 of file classifier.cc.

References Classifier::alloc(), Classifier::maxslot_, Classifier::nslot_, and Classifier::slot_.

Referenced by Classifier::command(), Classifier::do_install(), HierClassifier::do_install(), do_install(), MPLSAddressClassifier::install(), and Classifier::install_next().

00103 {
00104     if (slot >= nslot_)
00105         alloc(slot);
00106     slot_[slot] = p;
00107     if (slot >= maxslot_)
00108         maxslot_ = slot;
00109 }

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int Classifier::install_next (  NsObject *  node  )  [inherited]
 

Definition at line 183 of file classifier.cc.

References Classifier::install(), Classifier::maxslot_, and Classifier::slot().

Referenced by ManualRoutingModule::add_route(), and Classifier::command().

00183                                            {
00184     int slot = maxslot_ + 1;
00185     install(slot, node);
00186     return (slot);
00187 }

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int NsObject::isdebug (   )  const [inline, inherited]
 

Definition at line 61 of file object.h.

References NsObject::debug_.

00061 { return debug_; }

long HashClassifier::lookup (  nsaddr_t  src,
nsaddr_t  dst,
int  fid
)  [inline, protected, inherited]
 

Definition at line 88 of file classifier-hash.h.

References HashClassifier::get_hash().

00088                                                      {
00089         return get_hash(src, dst, fid);
00090     }

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virtual long HashClassifier::lookup (  Packet *  p  )  [inline, virtual, inherited]
 

Definition at line 54 of file classifier-hash.h.

References hdr_ip::access(), hdr_ip::daddr(), hdr_ip::flowid(), HashClassifier::get_hash(), Classifier::mshift(), and hdr_ip::saddr().

Referenced by classify(), HashClassifier::classify(), HashClassifier::newflow(), and HashClassifier::unknown().

00054                                    {
00055         hdr_ip* h = hdr_ip::access(p);
00056         return get_hash(mshift(h->saddr()), mshift(h->daddr()), 
00057                 h->flowid());
00058     }

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int Classifier::maxslot (   )  const [inline, inherited]
 

Definition at line 49 of file classifier.h.

References Classifier::maxslot_.

Referenced by FlowMon::dumpflows(), Tagger::dumpflows(), FlowMon::flow_list(), and Tagger::flow_list().

00049 { return maxslot_; }

int Classifier::mshift (  int  val  )  [inline, inherited]
 

Definition at line 55 of file classifier.h.

References Classifier::mask_, and Classifier::shift_.

Referenced by Classifier::classify(), VirtualClassifier::classify(), AddressClassifier::classify(), hashkey(), SrcDestHashClassifier::hashkey(), SrcDestFidHashClassifier::hashkey(), and HashClassifier::lookup().

00055 { return ((val >> shift_) & mask_); }

int HashClassifier::newflow (  Packet *  pkt  )  [inline, protected, inherited]
 

Definition at line 91 of file classifier-hash.h.

References hdr_ip::access(), hdr_ip::daddr(), hdr_ip::flowid(), HashClassifier::lookup(), and hdr_ip::saddr().

00091                              {
00092         hdr_ip* h = hdr_ip::access(pkt);
00093         Tcl::instance().evalf("%s unknown-flow %u %u %u",
00094                       name(), h->saddr(), h->daddr(),
00095                       h->flowid()); 
00096         return lookup(pkt);
00097     };

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void NsObject::recv (  Packet *  p,
const char *  s
)  [virtual, inherited]
 

Reimplemented in CMUTrace.

Definition at line 96 of file object.cc.

References Packet::free().

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

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void Classifier::recv (  Packet *  p,
Handler *  h
)  [virtual, inherited]
 

Implements NsObject.

Reimplemented in MCastBSTClassifier, HierClassifier, MacClassifier, VirtualClassifier, Replicator, and MIPDecapsulator.

Definition at line 140 of file classifier.cc.

References Classifier::find(), Packet::free(), and NsObject::recv().

Referenced by AODV::forward(), ErrorModule::recv(), DumbAgent::recv(), and HierClassifier::recv().

00141 {
00142     NsObject* node = find(p);
00143     if (node == NULL) {
00144         /*
00145          * XXX this should be "dropped" somehow.  Right now,
00146          * these events aren't traced.
00147          */
00148         Packet::free(p);
00149         return;
00150     }
00151     node->recv(p,h);
00152 }

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virtual void NsObject::recvOnly (  Packet *   )  [inline, virtual, inherited]
 

Reimplemented in Agent, and Trace.

Definition at line 56 of file object.h.

Referenced by Trace::recvOnly().

00056 {};

void HashClassifier::reset (   )  [inline, protected, virtual, inherited]
 

Reimplemented from NsObject.

Definition at line 98 of file classifier-hash.h.

References HashClassifier::ht_, and HashClassifier::keylen_.

00098                  {
00099         Tcl_DeleteHashTable(&ht_);
00100         Tcl_InitHashTable(&ht_, keylen_);
00101     }

void HashClassifier::set_default (  int  slot  )  [inline, inherited]
 

Definition at line 66 of file classifier-hash.h.

References HashClassifier::default_.

Referenced by ManualRoutingModule::add_route().

00066 { default_ = slot; }

void Classifier::set_default_target (  NsObject *  obj  )  [inline, inherited]
 

Definition at line 56 of file classifier.h.

References Classifier::default_target_.

Referenced by HierClassifier::command().

00056                                                   { 
00057         default_target_ = obj;
00058     }

int HashClassifier::set_hash (  nsaddr_t  src,
nsaddr_t  dst,
int  fid,
long  slot
)  [inline, protected, inherited]
 

Definition at line 105 of file classifier-hash.h.

References HashClassifier::hashkey(), and HashClassifier::ht_.

Referenced by HashClassifier::command(), do_install(), and HashClassifier::do_set_hash().

00105                                                                  {
00106         int newEntry;
00107         Tcl_HashEntry *ep= Tcl_CreateHashEntry(&ht_,
00108                                hashkey(src, dst, fid),
00109                                &newEntry); 
00110         if (ep) {
00111             Tcl_SetHashValue(ep, slot);
00112             return slot;
00113         }
00114         return -1;
00115     }

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virtual void Classifier::set_table_size (  int  level,
int  nn
)  [inline, virtual, inherited]
 

Reimplemented in HierClassifier.

Definition at line 75 of file classifier.h.

00075 {}

void HashClassifier::set_table_size (  int  nn  )  [inline, inherited]
 

Reimplemented from Classifier.

Definition at line 70 of file classifier-hash.h.

00070 {}

NsObject* Classifier::slot (  int  slot  )  [inline, inherited]
 

Definition at line 50 of file classifier.h.

References Classifier::nslot_, and Classifier::slot_.

Referenced by classify(), HashClassifier::classify(), Classifier::command(), MCastClassifier::command(), HierClassifier::command(), HashClassifier::command(), MPLSAddressClassifier::command(), Classifier::do_install(), do_install(), FlowMon::dumpflows(), Tagger::dumpflows(), FlowMon::flow_list(), Tagger::flow_list(), and Classifier::install_next().

00050                                     {
00051         if ((slot >= 0) && (slot < nslot_))
00052             return slot_[slot];
00053         return 0;
00054     }

virtual long HashClassifier::unknown (  Packet *  p  )  [inline, virtual, inherited]
 

Definition at line 59 of file classifier-hash.h.

References hdr_ip::access(), hdr_ip::daddr(), hdr_ip::flowid(), HashClassifier::lookup(), and hdr_ip::saddr().

Referenced by HashClassifier::classify().

00059                                     {
00060         hdr_ip* h = hdr_ip::access(p);
00061         Tcl::instance().evalf("%s unknown-flow %u %u %u",
00062                       name(), h->saddr(), h->daddr(),
00063                       h->flowid()); 
00064         return lookup(p);
00065     };

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Field Documentation

hkey HashClassifier::buf_ [protected, inherited]
 

Definition at line 129 of file classifier-hash.h.

Referenced by SrcDestHashClassifier::hashkey(), and SrcDestFidHashClassifier::hashkey().

int NsObject::debug_ [protected, inherited]
 

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(), PushbackQueue::enque(), NsObject::isdebug(), NsObject::NsObject(), TfrcAgent::recv(), PushbackQueue::reportDrop(), SctpAgent::Reset(), REDQueue::reset(), DropTail::shrink_queue(), and Delayer::try_send().

int HashClassifier::default_ [protected, inherited]
 

Definition at line 127 of file classifier-hash.h.

Referenced by classify(), HashClassifier::classify(), HashClassifier::HashClassifier(), and HashClassifier::set_default().

NsObject* Classifier::default_target_ [protected, inherited]
 

Definition at line 88 of file classifier.h.

Referenced by Classifier::Classifier(), Classifier::command(), Classifier::find(), BcastAddressClassifier::find(), and Classifier::set_default_target().

Tcl_HashTable HashClassifier::ht_ [protected, inherited]
 

Definition at line 128 of file classifier-hash.h.

Referenced by HashClassifier::command(), HashClassifier::get_hash(), HashClassifier::HashClassifier(), HashClassifier::reset(), HashClassifier::set_hash(), and HashClassifier::~HashClassifier().

int HashClassifier::keylen_ [protected, inherited]
 

Definition at line 130 of file classifier-hash.h.

Referenced by HashClassifier::reset().

int Classifier::mask_ [protected, inherited]
 

Definition at line 87 of file classifier.h.

Referenced by Classifier::Classifier(), and Classifier::mshift().

int Classifier::maxslot_ [protected, inherited]
 

Definition at line 84 of file classifier.h.

Referenced by MultiPathForwarder::classify(), classify(), HashClassifier::classify(), Classifier::clear(), ReservePortClassifier::clear(), ReserveAddressClassifier::clear(), Replicator::command(), ReservePortClassifier::command(), HashClassifier::command(), ReserveAddressClassifier::command(), Classifier::install(), Classifier::install_next(), Classifier::maxslot(), Replicator::recv(), and MacClassifier::recv().

int Classifier::nsize_ [protected, inherited]
 

Definition at line 89 of file classifier.h.

Referenced by Classifier::alloc(), and Classifier::set_table_size().

int Classifier::nslot_ [protected, inherited]
 

Definition at line 83 of file classifier.h.

Referenced by Classifier::alloc(), Classifier::command(), Classifier::find(), BcastAddressClassifier::find(), MCastClassifier::findslot(), Classifier::getnxt(), ReservePortClassifier::getnxt(), ReserveAddressClassifier::getnxt(), Classifier::install(), MPLSAddressClassifier::install(), and Classifier::slot().

int Classifier::offset_ [protected, inherited]
 

Definition at line 85 of file classifier.h.

Referenced by Classifier::Classifier(), and Classifier::classify().

int Classifier::shift_ [protected, inherited]
 

Definition at line 86 of file classifier.h.

Referenced by Classifier::Classifier(), and Classifier::mshift().

NsObject** Classifier::slot_ [protected, inherited]
 

Definition at line 82 of file classifier.h.

Referenced by Classifier::alloc(), MultiPathForwarder::classify(), Classifier::clear(), ReservePortClassifier::clear(), ReserveAddressClassifier::clear(), Replicator::command(), Classifier::command(), MCastClassifier::command(), HashClassifier::command(), Classifier::find(), SRClassifier::find(), QSClassifier::find(), BcastAddressClassifier::find(), MCastClassifier::findslot(), Classifier::getnxt(), ReservePortClassifier::getnxt(), ReserveAddressClassifier::getnxt(), Classifier::install(), MPLSAddressClassifier::install(), Replicator::recv(), MacClassifier::recv(), Classifier::slot(), and Classifier::~Classifier().

The documentation for this class was generated from the following files:
Generated on Tue Mar 6 17:05:31 2007 for ns2 Network Simulator 2.29 by  doxygen 1.4.6