29#include "ns3/boolean.h"
30#include "ns3/callback.h"
31#include "ns3/ipv4-address.h"
32#include "ns3/ipv4-header.h"
33#include "ns3/ipv4-route.h"
34#include "ns3/ipv4-routing-table-entry.h"
36#include "ns3/net-device.h"
38#include "ns3/object-vector.h"
39#include "ns3/packet.h"
40#include "ns3/socket.h"
41#include "ns3/string.h"
42#include "ns3/trace-source-accessor.h"
43#include "ns3/traffic-control-layer.h"
44#include "ns3/uinteger.h"
59 TypeId(
"ns3::Ipv4L3Protocol")
61 .SetGroupName(
"Internet")
63 .AddAttribute(
"DefaultTtl",
64 "The TTL value set by default on "
65 "all outgoing packets generated on this node.",
68 MakeUintegerChecker<uint8_t>())
69 .AddAttribute(
"FragmentExpirationTimeout",
70 "When this timeout expires, the fragments "
71 "will be cleared from the buffer.",
75 .AddAttribute(
"EnableDuplicatePacketDetection",
76 "Enable multicast duplicate packet detection based on RFC 6621",
80 .AddAttribute(
"DuplicateExpire",
81 "Expiration delay for duplicate cache entries",
85 .AddAttribute(
"PurgeExpiredPeriod",
86 "Time between purges of expired duplicate packet entries, "
87 "0 means never purge",
92 "Send ipv4 packet to outgoing interface.",
94 "ns3::Ipv4L3Protocol::TxRxTracedCallback")
96 "Receive ipv4 packet from incoming interface.",
98 "ns3::Ipv4L3Protocol::TxRxTracedCallback")
99 .AddTraceSource(
"Drop",
102 "ns3::Ipv4L3Protocol::DropTracedCallback")
103 .AddAttribute(
"InterfaceList",
104 "The set of Ipv4 interfaces associated to this Ipv4 stack.",
107 MakeObjectVectorChecker<Ipv4Interface>())
109 .AddTraceSource(
"SendOutgoing",
110 "A newly-generated packet by this node is "
111 "about to be queued for transmission",
113 "ns3::Ipv4L3Protocol::SentTracedCallback")
114 .AddTraceSource(
"UnicastForward",
115 "A unicast IPv4 packet was received by this node "
116 "and is being forwarded to another node",
118 "ns3::Ipv4L3Protocol::SentTracedCallback")
119 .AddTraceSource(
"MulticastForward",
120 "A multicast IPv4 packet was received by this node "
121 "and is being forwarded to another node",
123 "ns3::Ipv4L3Protocol::SentTracedCallback")
124 .AddTraceSource(
"LocalDeliver",
125 "An IPv4 packet was received by/for this node, "
126 "and it is being forward up the stack",
128 "ns3::Ipv4L3Protocol::SentTracedCallback")
165 <<
" on interface " <<
int(interfaceIndex));
179 NS_LOG_WARN(
"Trying to remove an non-existent default protocol "
197 NS_LOG_WARN(
"Trying to remove an non-existent protocol "
199 <<
int(interfaceIndex));
221 L4List_t::const_iterator i;
222 if (interfaceIndex >= 0)
225 key = std::make_pair(protocolNumber, interfaceIndex);
233 key = std::make_pair(protocolNumber, -1);
286 Ptr<Node> node = this->GetObject<Node>();
335 it->second =
nullptr;
371 device = CreateObject<LoopbackNetDevice>();
374 interface->SetDevice(device);
375 interface->SetNode(
m_node);
378 interface->AddAddress(ifaceAddr);
418 tc->RegisterProtocolHandler(
425 interface->SetDevice(device);
426 interface->SetTrafficControl(tc);
467 for (
uint32_t j = 0; j < (*i)->GetNAddresses(); j++)
469 if ((*i)->GetAddress(j).GetLocal() ==
address)
487 for (
uint32_t j = 0; j < (*i)->GetNAddresses(); j++)
489 if ((*i)->GetAddress(j).GetLocal().CombineMask(mask) ==
address.CombineMask(mask))
507 return (*iter).second;
536 if (MulticastCheckGroup(iif,
address))
565 <<
" match) on another interface");
571 NS_LOG_LOGIC(
"For me (interface broadcast address on another interface)");
588 NS_LOG_FUNCTION(
this << device << p << protocol << from << to << packetType);
592 int32_t interface = GetInterfaceForDevice(device);
593 NS_ASSERT_MSG(interface != -1,
"Received a packet from an interface that is not known to IPv4");
599 if (ipv4Interface->
IsUp())
605 NS_LOG_LOGIC(
"Dropping received packet -- interface is down");
627 NS_LOG_LOGIC(
"Dropping received packet -- checksum not ok");
650 std::list<ArpCache::Entry*> entryList = arpCache->
LookupInverse(from);
651 std::list<ArpCache::Entry*>::iterator iter;
652 for (iter = entryList.begin(); iter != entryList.end(); iter++)
654 if ((*iter)->IsAlive())
656 (*iter)->UpdateSeen();
666 socket->
ForwardUp(packet, ipHeader, ipv4Interface);
685 NS_LOG_WARN(
"No route found for forwarding packet. Drop.");
722 NS_LOG_LOGIC(
"Testing address " << ad <<
" with subnet-directed broadcast "
776 bool mayFragment =
true;
814 if (!route->GetGateway().IsInitialized())
820 NS_FATAL_ERROR(
"Ipv4L3Protocol::Send case 1a: packet passed with a route but the "
821 "Gateway address is uninitialized. This case not yet implemented.");
825 NS_LOG_LOGIC(
"Ipv4L3Protocol::Send case 1b: passed in with route and valid gateway");
839 NS_LOG_LOGIC(
"Ipv4L3Protocol::Send case 2: limited broadcast - no route");
841 for (Ipv4InterfaceList::iterator ifaceIter =
m_interfaces.begin();
843 ifaceIter++, ifaceIndex++)
847 bool sendIt = source.
IsAny();
861 route->SetDestination(destination);
863 route->SetSource(source);
864 route->SetOutputDevice(outInterface->
GetDevice());
866 Send(pktCopyWithTags, source, destination, protocol, route);
873 for (Ipv4InterfaceList::iterator ifaceIter =
m_interfaces.begin();
888 NS_LOG_LOGIC(
"Ipv4L3Protocol::Send case 3: subnet directed bcast to "
889 << ifAddr.
GetLocal() <<
" - no route");
892 route->SetDestination(destination);
894 route->SetSource(source);
895 route->SetOutputDevice(outInterface->
GetDevice());
897 Send(pktCopyWithTags, source, destination, protocol, route);
904 NS_LOG_LOGIC(
"Ipv4L3Protocol::Send case 4: not broadcast and passed in with no route "
911 newRoute =
m_routingProtocol->RouteOutput(pktCopyWithTags, ipHeader, oif, errno_);
915 NS_LOG_ERROR(
"Ipv4L3Protocol::Send: m_routingProtocol == 0");
920 Send(pktCopyWithTags, source, destination, protocol, newRoute);
935 uint64_t src = source.
Get();
936 uint64_t dst = destination.
Get();
937 uint64_t srcDst = dst | (src << 32);
938 std::pair<uint64_t, uint8_t> key = std::make_pair(srcDst, protocol);
946 uint16_t payloadSize,
951 NS_LOG_FUNCTION(
this << source << destination << (uint16_t)protocol << payloadSize
952 << (uint16_t)ttl << (uint16_t)tos << mayFragment);
961 uint64_t src = source.
Get();
962 uint64_t dst = destination.
Get();
963 uint64_t srcDst = dst | (src << 32);
964 std::pair<uint64_t, uint8_t> key = std::make_pair(srcDst, protocol);
966 if (mayFragment ==
true)
1000 int32_t interface = GetInterfaceForDevice(outDev);
1003 NS_LOG_LOGIC(
"Send via NetDevice ifIndex " << outDev->GetIfIndex() <<
" ipv4InterfaceIndex "
1007 std::string targetLabel;
1008 if (route->GetGateway().IsAny())
1011 targetLabel =
"destination";
1015 target = route->GetGateway();
1016 targetLabel =
"gateway";
1019 if (outInterface->
IsUp())
1021 NS_LOG_LOGIC(
"Send to " << targetLabel <<
" " << target);
1024 std::list<Ipv4PayloadHeaderPair> listFragments;
1026 for (std::list<Ipv4PayloadHeaderPair>::iterator it = listFragments.begin();
1027 it != listFragments.end();
1031 CallTxTrace(it->second, it->first,
this, interface);
1032 outInterface->
Send(it->first, it->second, target);
1038 outInterface->
Send(packet, ipHeader, target);
1052 std::map<uint32_t, uint32_t> ttlMap = mrtentry->GetOutputTtlMap();
1053 std::map<uint32_t, uint32_t>::iterator mapIter;
1055 for (mapIter = ttlMap.begin(); mapIter != ttlMap.end(); mapIter++)
1063 if (ipHeader.
GetTtl() == 0)
1069 NS_LOG_LOGIC(
"Forward multicast via interface " << interface);
1071 rtentry->SetSource(ipHeader.
GetSource());
1092 if (ipHeader.
GetTtl() == 0)
1099 icmp->SendTimeExceededTtl(ipHeader, packet,
false);
1129 NS_LOG_LOGIC(
"Received a fragment, processing " << *p);
1130 bool isPacketComplete;
1132 if (isPacketComplete ==
false)
1136 NS_LOG_LOGIC(
"Got last fragment, Packet is complete " << *p);
1165 bool subnetDirected =
false;
1173 subnetDirected =
true;
1176 if (subnetDirected ==
false)
1178 GetIcmp()->SendDestUnreachPort(ipHeader, copy);
1269 if (test.GetLocal().CombineMask(test.GetMask()) == dest.
CombineMask(test.GetMask()))
1271 if (test.IsSecondary() ==
false)
1273 return test.GetLocal();
1337 NS_LOG_WARN(
"Could not find source address for " << dst <<
" and scope " << scope
1338 <<
", returning 0");
1363 return interface->
GetDevice()->GetMtu();
1371 return interface->
IsUp();
1384 if (interface->GetDevice()->GetMtu() >= 68)
1398 <<
" is set to be down for IPv4. Reason: not respecting minimum IPv4 MTU (68 octets)");
1420 NS_LOG_LOGIC(
"Forwarding state: " << interface->IsForwarding());
1421 return interface->IsForwarding();
1446 (*i)->SetForwarding(forward);
1477 NS_LOG_LOGIC(
"Route input failure-- dropping packet to " << ipHeader <<
" with errno "
1488 std::list<Ipv4PayloadHeaderPair>& listFragments)
1500 "IPv4 fragmentation implementation only works without option headers.");
1502 uint16_t offset = 0;
1503 bool moreFragment =
true;
1506 uint32_t currentFragmentablePartSize = 0;
1513 NS_LOG_LOGIC(
"Fragmenting - Target Size: " << fragmentSize);
1519 if (p->
GetSize() > offset + fragmentSize)
1521 moreFragment =
true;
1522 currentFragmentablePartSize = fragmentSize;
1527 moreFragment =
false;
1528 currentFragmentablePartSize = p->
GetSize() - offset;
1529 if (!isLastFragment)
1539 NS_LOG_LOGIC(
"Fragment creation - " << offset <<
", " << currentFragmentablePartSize);
1553 NS_LOG_LOGIC(
"New fragment Header " << fragmentHeader);
1555 std::ostringstream oss;
1556 oss << fragmentHeader;
1557 fragment->
Print(oss);
1561 listFragments.emplace_back(fragment, fragmentHeader);
1563 offset += currentFragmentablePartSize;
1565 }
while (moreFragment);
1573 uint64_t addressCombination =
1581 key.first = addressCombination;
1582 key.second = idProto;
1586 MapFragments_t::iterator it =
m_fragments.find(key);
1589 fragments = Create<Fragments>();
1590 m_fragments.insert(std::make_pair(key, fragments));
1597 fragments = it->second;
1609 fragments =
nullptr;
1625 uint16_t fragmentOffset,
1630 std::list<std::pair<Ptr<Packet>, uint16_t>>::iterator it;
1634 if (it->second > fragmentOffset)
1642 m_moreFragment = moreFragment;
1653 bool ret = !m_moreFragment && !
m_fragments.empty();
1657 uint16_t lastEndOffset = 0;
1664 NS_LOG_LOGIC(
"Checking overlaps " << lastEndOffset <<
" - " << it->second);
1666 if (lastEndOffset < it->
second)
1672 uint16_t fragmentEnd = it->first->GetSize() + it->second;
1673 lastEndOffset =
std::max(lastEndOffset, fragmentEnd);
1685 std::list<std::pair<Ptr<Packet>, uint16_t>>::const_iterator it =
m_fragments.begin();
1688 uint16_t lastEndOffset = p->
GetSize();
1693 if (lastEndOffset > it->second)
1699 uint32_t newStart = lastEndOffset - it->second;
1700 if (it->first->GetSize() > newStart)
1702 uint32_t newSize = it->first->GetSize() - newStart;
1723 std::list<std::pair<Ptr<Packet>, uint16_t>>::const_iterator it =
m_fragments.begin();
1726 uint16_t lastEndOffset = 0;
1735 if (lastEndOffset > it->second)
1737 uint32_t newStart = lastEndOffset - it->second;
1738 uint32_t newSize = it->first->GetSize() - newStart;
1742 else if (lastEndOffset == it->second)
1756 m_timeoutIter = iter;
1762 return m_timeoutIter;
1770 MapFragments_t::iterator it =
m_fragments.find(key);
1771 Ptr<Packet> packet = it->second->GetPartialPacket();
1777 icmp->SendTimeExceededTtl(ipHeader, packet,
true);
1782 it->second =
nullptr;
1799 uint64_t hash =
id << 32;
1813 std::ostringstream oss(std::ios_base::binary);
1815 std::string bytes = oss.str();
1817 NS_ASSERT_MSG(bytes.size() >= 20,
"Degenerate header serialization");
1821 bytes[6] = bytes[7] = 0;
1823 bytes[10] = bytes[11] = 0;
1830 hash |= (uint64_t)
Hash32(bytes);
1841 NS_LOG_DEBUG(
"Packet " << p->
GetUid() <<
" key = (" << std::hex << std::get<0>(key) <<
", "
1842 << std::dec << +std::get<1>(key) <<
", " << std::get<2>(key) <<
", "
1843 << std::get<3>(key) <<
")");
1846 DupMap_t::iterator iter;
1862 DupMap_t::size_type n = 0;
1864 auto iter =
m_dups.cbegin();
1865 while (iter !=
m_dups.cend())
1867 if (iter->second < expire)
1869 NS_LOG_LOGIC(
"Remove key = (" << std::hex << std::get<0>(iter->first) <<
", "
1870 << std::dec << +std::get<1>(iter->first) <<
", "
1871 << std::get<2>(iter->first) <<
", "
1872 << std::get<3>(iter->first) <<
")");
1873 iter =
m_dups.erase(iter);
1882 NS_LOG_DEBUG(
"Purged " << n <<
" expired duplicate entries out of " << (n +
m_dups.size()));
a polymophic address class
A record that that holds information about an ArpCache entry.
void UpdateSeen()
Update the entry when seeing a packet.
std::list< ArpCache::Entry * > LookupInverse(Address destination)
Do lookup in the ARP cache against a MAC address.
ArpCache::Entry * Lookup(Ipv4Address destination)
Do lookup in the ARP cache against an IP address.
void Receive(Ptr< NetDevice > device, Ptr< const Packet > p, uint16_t protocol, const Address &from, const Address &to, NetDevice::PacketType packetType)
Receive a packet.
static const uint16_t PROT_NUMBER
ARP protocol number (0x0806)
AttributeValue implementation for Boolean.
void Cancel()
This method is syntactic sugar for the ns3::Simulator::Cancel method.
bool IsRunning() const
This method is syntactic sugar for !IsExpired().
This is the implementation of the ICMP protocol as described in RFC 792.
static uint16_t GetStaticProtocolNumber()
Get the protocol number.
virtual RxStatus Receive(Ptr< Packet > p, const Ipv4Header &header, Ptr< Ipv4Interface > incomingInterface)=0
Called from lower-level layers to send the packet up in the stack.
virtual int GetProtocolNumber() const =0
Returns the protocol number of this protocol.
Ipv4 addresses are stored in host order in this class.
static Ipv4Address GetLoopback()
bool IsSubnetDirectedBroadcast(const Ipv4Mask &mask) const
Generate subnet-directed broadcast address corresponding to mask.
Ipv4Address CombineMask(const Ipv4Mask &mask) const
Combine this address with a network mask.
uint32_t Get() const
Get the host-order 32-bit IP address.
static Ipv4Address GetAny()
bool IsLocalMulticast() const
Access to the IPv4 forwarding table, interfaces, and configuration.
a class to store IPv4 address information on an interface
Ipv4Mask GetMask() const
Get the network mask.
InterfaceAddressScope_e
Address scope.
Ipv4InterfaceAddress::InterfaceAddressScope_e GetScope() const
Get address scope.
Ipv4Address GetLocal() const
Get the local address.
bool IsSecondary() const
Check if the address is a secondary address.
Ipv4Address GetBroadcast() const
Get the broadcast address.
The IPv4 representation of a network interface.
uint32_t GetNAddresses() const
void SetNode(Ptr< Node > node)
Set node associated with interface.
Ipv4InterfaceAddress GetAddress(uint32_t index) const
bool AddAddress(Ipv4InterfaceAddress address)
uint16_t GetMetric() const
bool IsUp() const
These are IP interface states and may be distinct from NetDevice states, such as found in real implem...
void SetUp()
Enable this interface.
Ptr< ArpCache > GetArpCache() const
Ptr< NetDevice > GetDevice() const
void SetDown()
Disable this interface.
void Send(Ptr< Packet > p, const Ipv4Header &hdr, Ipv4Address dest)
void SetForwarding(bool val)
void SetMetric(uint16_t metric)
bool IsEntire() const
If all fragments have been added.
Ptr< Packet > GetPartialPacket() const
Get the complete part of the packet.
FragmentsTimeoutsListI_t GetTimeoutIter()
Get the Timeout iterator.
void AddFragment(Ptr< Packet > fragment, uint16_t fragmentOffset, bool moreFragment)
Add a fragment.
Ptr< Packet > GetPacket() const
Get the entire packet.
void SetTimeoutIter(FragmentsTimeoutsListI_t iter)
Set the Timeout iterator.
Implement the IPv4 layer.
static const uint16_t PROT_NUMBER
Protocol number (0x0800)
std::tuple< uint64_t, uint8_t, Ipv4Address, Ipv4Address > DupTuple_t
IETF RFC 6621, Section 6.2 de-duplication w/o IPSec RFC 6621 recommended duplicate packet tuple: {IPV...
void CallTxTrace(const Ipv4Header &ipHeader, Ptr< Packet > packet, Ptr< Ipv4 > ipv4, uint32_t interface)
Make a copy of the packet, add the header and invoke the TX trace callback.
@ DROP_BAD_CHECKSUM
Bad checksum.
@ DROP_NO_ROUTE
No route to host.
@ DROP_INTERFACE_DOWN
Interface is down so can not send packet.
@ DROP_DUPLICATE
Duplicate packet received.
@ DROP_TTL_EXPIRED
Packet TTL has expired.
@ DROP_ROUTE_ERROR
Route error.
@ DROP_FRAGMENT_TIMEOUT
Fragment timeout exceeded.
void DecreaseIdentification(Ipv4Address source, Ipv4Address destination, uint8_t protocol)
Decrease the identification value for a dropped or recursed packet.
Ipv4InterfaceList m_interfaces
List of IPv4 interfaces.
void DeleteRawSocket(Ptr< Socket > socket) override
Deletes a particular raw socket.
MapFragments_t m_fragments
Fragmented packets.
void LocalDeliver(Ptr< const Packet > p, const Ipv4Header &ip, uint32_t iif)
Deliver a packet.
bool IsDestinationAddress(Ipv4Address address, uint32_t iif) const override
Determine whether address and interface corresponding to received packet can be accepted for local de...
std::pair< uint64_t, uint32_t > FragmentKey_t
Key identifying a fragmented packet.
Time m_expire
duplicate entry expiration delay
~Ipv4L3Protocol() override
bool m_ipForward
Forwarding packets (i.e.
void Receive(Ptr< NetDevice > device, Ptr< const Packet > p, uint16_t protocol, const Address &from, const Address &to, NetDevice::PacketType packetType)
Lower layer calls this method after calling L3Demux::Lookup The ARP subclass needs to know from which...
void SetUp(uint32_t i) override
uint32_t GetNInterfaces() const override
Ipv4Header BuildHeader(Ipv4Address source, Ipv4Address destination, uint8_t protocol, uint16_t payloadSize, uint8_t ttl, uint8_t tos, bool mayFragment)
Construct an IPv4 header.
void RouteInputError(Ptr< const Packet > p, const Ipv4Header &ipHeader, Socket::SocketErrno sockErrno)
Fallback when no route is found.
void SetMetric(uint32_t i, uint16_t metric) override
void DoDispose() override
Destructor implementation.
void Remove(Ptr< IpL4Protocol > protocol) override
void SetIpForward(bool forward) override
Set or unset the IP forwarding state.
bool AddAddress(uint32_t i, Ipv4InterfaceAddress address) override
TracedCallback< const Ipv4Header &, Ptr< const Packet >, uint32_t > m_unicastForwardTrace
Trace of unicast forwarded packets.
bool GetWeakEsModel() const override
Get the Weak Es Model status.
TracedCallback< const Ipv4Header &, Ptr< const Packet >, uint32_t > m_localDeliverTrace
Trace of locally delivered packets.
bool IsUnicast(Ipv4Address ad) const
Check if an IPv4 address is unicast according to the node.
void HandleFragmentsTimeout(FragmentKey_t key, Ipv4Header &ipHeader, uint32_t iif)
Process the timeout for packet fragments.
uint16_t GetMtu(uint32_t i) const override
Ptr< Icmpv4L4Protocol > GetIcmp() const
Get ICMPv4 protocol.
Ptr< IpL4Protocol > GetProtocol(int protocolNumber) const override
void RemoveDuplicates()
Remove expired duplicates packet entry.
void DoFragmentation(Ptr< Packet > packet, const Ipv4Header &ipv4Header, uint32_t outIfaceMtu, std::list< Ipv4PayloadHeaderPair > &listFragments)
Fragment a packet.
SocketList m_sockets
List of IPv4 raw sockets.
bool m_enableDpd
Enable multicast duplicate packet detection.
std::map< std::pair< uint64_t, uint8_t >, uint16_t > m_identification
Identification (for each {src, dst, proto} tuple)
bool IsUp(uint32_t i) const override
Time m_fragmentExpirationTimeout
Expiration timeout.
TracedCallback< const Ipv4Header &, Ptr< const Packet >, uint32_t > m_sendOutgoingTrace
Trace of sent packets.
EventId m_timeoutEvent
Event for the next scheduled timeout.
int32_t GetInterfaceForPrefix(Ipv4Address addr, Ipv4Mask mask) const override
Return the interface number of first interface found that has an Ipv4 address within the prefix speci...
void SetWeakEsModel(bool model) override
Set or unset the Weak Es Model.
Time m_purge
time between purging expired duplicate entries
void SetNode(Ptr< Node > node)
Set node associated with this stack.
void IpMulticastForward(Ptr< Ipv4MulticastRoute > mrtentry, Ptr< const Packet > p, const Ipv4Header &header)
Forward a multicast packet.
TracedCallback< Ptr< const Packet >, Ptr< Ipv4 >, uint32_t > m_rxTrace
Trace of received packets.
uint16_t GetMetric(uint32_t i) const override
FragmentsTimeoutsList_t m_timeoutEventList
Timeout "events" container.
TracedCallback< Ptr< const Packet >, Ptr< Ipv4 >, uint32_t > m_txTrace
Trace of transmitted packets.
Ptr< Socket > CreateRawSocket() override
Creates a raw socket.
bool ProcessFragment(Ptr< Packet > &packet, Ipv4Header &ipHeader, uint32_t iif)
Process a packet fragment.
static TypeId GetTypeId()
Get the type ID.
void HandleTimeout()
Handles a fragmented packet timeout.
Ipv4Address SourceAddressSelection(uint32_t interface, Ipv4Address dest) override
Choose the source address to use with destination address.
void NotifyNewAggregate() override
This function will notify other components connected to the node that a new stack member is now conne...
Ipv4InterfaceReverseContainer m_reverseInterfacesContainer
Container of NetDevice / Interface index associations.
uint32_t AddInterface(Ptr< NetDevice > device) override
EventId m_cleanDpd
event to cleanup expired duplicate entries
void SendWithHeader(Ptr< Packet > packet, Ipv4Header ipHeader, Ptr< Ipv4Route > route) override
bool IsForwarding(uint32_t i) const override
void Send(Ptr< Packet > packet, Ipv4Address source, Ipv4Address destination, uint8_t protocol, Ptr< Ipv4Route > route) override
Ptr< NetDevice > GetNetDevice(uint32_t i) override
L4List_t m_protocols
List of transport protocol.
uint32_t GetNAddresses(uint32_t interface) const override
void SetDown(uint32_t i) override
void SetRoutingProtocol(Ptr< Ipv4RoutingProtocol > routingProtocol) override
Register a new routing protocol to be used by this Ipv4 stack.
Ptr< Ipv4RoutingProtocol > GetRoutingProtocol() const override
Get the routing protocol to be used by this Ipv4 stack.
Ptr< Ipv4RoutingProtocol > m_routingProtocol
Routing protocol associated with the stack.
TracedCallback< const Ipv4Header &, Ptr< const Packet >, uint32_t > m_multicastForwardTrace
Trace of multicast forwarded packets.
uint8_t m_defaultTtl
Default TTL.
bool m_weakEsModel
Weak ES model state.
DupMap_t m_dups
map of packet duplicate tuples to expiry event
void SendRealOut(Ptr< Ipv4Route > route, Ptr< Packet > packet, const Ipv4Header &ipHeader)
Send packet with route.
Ptr< Node > m_node
Node attached to stack.
bool UpdateDuplicate(Ptr< const Packet > p, const Ipv4Header &header)
Registers duplicate entry, return false if new.
Ipv4Address SelectSourceAddress(Ptr< const NetDevice > device, Ipv4Address dst, Ipv4InterfaceAddress::InterfaceAddressScope_e scope) override
Return the first primary source address with scope less than or equal to the requested scope,...
bool RemoveAddress(uint32_t interfaceIndex, uint32_t addressIndex) override
Remove the address at addressIndex on named interface.
Ipv4InterfaceAddress GetAddress(uint32_t interfaceIndex, uint32_t addressIndex) const override
Because addresses can be removed, the addressIndex is not guaranteed to be static across calls to thi...
int32_t GetInterfaceForAddress(Ipv4Address addr) const override
Return the interface number of the interface that has been assigned the specified IP address.
Ptr< Ipv4Interface > GetInterface(uint32_t i) const
Get an interface.
void IpForward(Ptr< Ipv4Route > rtentry, Ptr< const Packet > p, const Ipv4Header &header)
Forward a packet.
void SetForwarding(uint32_t i, bool val) override
std::list< std::tuple< Time, FragmentKey_t, Ipv4Header, uint32_t > >::iterator FragmentsTimeoutsListI_t
Container Iterator for fragment timeouts..
void SetupLoopback()
Setup loopback interface.
void SetDefaultTtl(uint8_t ttl)
int32_t GetInterfaceForDevice(Ptr< const NetDevice > device) const override
void Insert(Ptr< IpL4Protocol > protocol) override
TracedCallback< const Ipv4Header &, Ptr< const Packet >, DropReason, Ptr< Ipv4 >, uint32_t > m_dropTrace
Trace of dropped packets.
FragmentsTimeoutsListI_t SetTimeout(FragmentKey_t key, Ipv4Header ipHeader, uint32_t iif)
Set a new timeout "event" for a fragmented packet.
bool GetIpForward() const override
Get the IP forwarding state.
std::pair< int, int32_t > L4ListKey_t
Container of the IPv4 L4 keys: protocol number, interface index.
uint32_t AddIpv4Interface(Ptr< Ipv4Interface > interface)
Add an IPv4 interface to the stack.
a class to represent an Ipv4 address mask
static Ipv4Mask GetLoopback()
bool ForwardUp(Ptr< const Packet > p, Ipv4Header ipHeader, Ptr< Ipv4Interface > incomingInterface)
Forward up to receive method.
void SetNode(Ptr< Node > node)
Set the node associated with this socket.
PacketType
Packet types are used as they are in Linux.
uint32_t AddDevice(Ptr< NetDevice > device)
Associate a NetDevice to this node.
uint32_t GetNDevices() const
Ptr< NetDevice > GetDevice(uint32_t index) const
Retrieve the index-th NetDevice associated to this node.
static bool ChecksumEnabled()
void RegisterProtocolHandler(ProtocolHandler handler, uint16_t protocolType, Ptr< NetDevice > device, bool promiscuous=false)
virtual void NotifyNewAggregate()
Notify all Objects aggregated to this one of a new Object being aggregated.
Ptr< T > GetObject() const
Get a pointer to the requested aggregated Object.
virtual void DoDispose()
Destructor implementation.
bool RemovePacketTag(Tag &tag)
Remove a packet tag.
uint32_t RemoveHeader(Header &header)
Deserialize and remove the header from the internal buffer.
void AddAtEnd(Ptr< const Packet > packet)
Concatenate the input packet at the end of the current packet.
void AddHeader(const Header &header)
Add header to this packet.
uint32_t GetSize() const
Returns the the size in bytes of the packet (including the zero-filled initial payload).
uint32_t CopyData(uint8_t *buffer, uint32_t size) const
Copy the packet contents to a byte buffer.
void RemoveAtEnd(uint32_t size)
Remove size bytes from the end of the current packet.
Ptr< Packet > Copy() const
performs a COW copy of the packet.
void AddPacketTag(const Tag &tag) const
Add a packet tag.
Ptr< Packet > CreateFragment(uint32_t start, uint32_t length) const
Create a new packet which contains a fragment of the original packet.
void Print(std::ostream &os) const
Print the packet contents.
uint64_t GetUid() const
Returns the packet's Uid.
static EventId Schedule(const Time &delay, FUNC f, Ts &&... args)
Schedule an event to expire after delay.
static Time Now()
Return the current simulation virtual time.
static uint8_t IpTos2Priority(uint8_t ipTos)
Return the priority corresponding to a given TOS value.
SocketErrno
Enumeration of the possible errors returned by a socket.
indicates whether the socket has IP_TOS set.
uint8_t GetTos() const
Get the tag's TOS.
This class implements a tag that carries the socket-specific TTL of a packet to the IP layer.
uint8_t GetTtl() const
Get the tag's TTL.
indicates whether the socket has a priority set.
void SetPriority(uint8_t priority)
Set the tag's priority.
Simulation virtual time values and global simulation resolution.
bool IsStrictlyPositive() const
Exactly equivalent to t > 0.
AttributeValue implementation for Time.
The Traffic Control layer aims at introducing an equivalent of the Linux Traffic Control infrastructu...
virtual void Receive(Ptr< NetDevice > device, Ptr< const Packet > p, uint16_t protocol, const Address &from, const Address &to, NetDevice::PacketType packetType)
Called by NetDevices, incoming packet.
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Hold an unsigned integer type.
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
#define NS_ASSERT_MSG(condition, message)
At runtime, in debugging builds, if this condition is not true, the program prints the message to out...
Ptr< const AttributeAccessor > MakeBooleanAccessor(T1 a1)
Ptr< const AttributeChecker > MakeBooleanChecker()
ObjectPtrContainerValue ObjectVectorValue
ObjectVectorValue is an alias for ObjectPtrContainerValue.
Ptr< const AttributeAccessor > MakeObjectVectorAccessor(U T::*memberVariable)
MakeAccessorHelper implementation for ObjectVector.
Ptr< const AttributeAccessor > MakeTimeAccessor(T1 a1)
Ptr< const AttributeAccessor > MakeUintegerAccessor(T1 a1)
#define NS_FATAL_ERROR(msg)
Report a fatal error with a message and terminate.
uint32_t Hash32(const char *buffer, const std::size_t size)
Compute 32-bit hash of a byte buffer, using the default hash function.
#define NS_LOG_ERROR(msg)
Use NS_LOG to output a message of level LOG_ERROR.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
#define NS_LOG_DEBUG(msg)
Use NS_LOG to output a message of level LOG_DEBUG.
#define NS_LOG_LOGIC(msg)
Use NS_LOG to output a message of level LOG_LOGIC.
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
#define NS_LOG_WARN(msg)
Use NS_LOG to output a message of level LOG_WARN.
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Time Seconds(double value)
Construct a Time in the indicated unit.
Time MilliSeconds(uint64_t value)
Construct a Time in the indicated unit.
Ptr< const TraceSourceAccessor > MakeTraceSourceAccessor(T a)
Create a TraceSourceAccessor which will control access to the underlying trace source.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
U * PeekPointer(const Ptr< U > &p)
Callback< R, Args... > MakeCallback(R(T::*memPtr)(Args...), OBJ objPtr)
Build Callbacks for class method members which take varying numbers of arguments and potentially retu...
Ptr< const AttributeChecker > MakeTimeChecker(const Time min, const Time max)
Helper to make a Time checker with bounded range.