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nexthop.cc
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/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
#include <boost/uuid/uuid_io.hpp>
#include <boost/foreach.hpp>
#include <cmn/agent_cmn.h>
#include "ifmap/ifmap_node.h"
#include <vnc_cfg_types.h>
#include "base/task_annotations.h"
#include <base/logging.h>
#include <oper/route_common.h>
#include <oper/interface_common.h>
#include <oper/nexthop.h>
#include <oper/mirror_table.h>
#include <oper/multicast.h>
#include <oper/tunnel_nh.h>
#include <oper/vrf.h>
#include <oper/agent_sandesh.h>
using namespace std;
NextHopTable *NextHopTable::nexthop_table_;
/////////////////////////////////////////////////////////////////////////////
// TunnelTyperoutines
/////////////////////////////////////////////////////////////////////////////
TunnelType::Type TunnelType::default_type_;
TunnelType::PriorityList TunnelType::priority_list_;
TunnelType::Type TunnelType::ComputeType(TunnelType::TypeBmap bmap) {
for (PriorityList::const_iterator it = priority_list_.begin();
it != priority_list_.end(); it++) {
if (bmap & (1 << *it)) {
return *it;
}
}
return DefaultType();
}
// Confg triggers for change in encapsulation priority
bool TunnelType::EncapPrioritySync(const std::vector<std::string> &cfg_list) {
PriorityList l;
for (std::vector<std::string>::const_iterator it = cfg_list.begin();
it != cfg_list.end(); it++) {
if (*it == "MPLSoGRE")
l.push_back(MPLS_GRE);
if (*it == "MPLSoUDP")
l.push_back(MPLS_UDP);
if (*it == "VXLAN")
l.push_back(VXLAN);
}
bool encap_changed = (priority_list_ != l);
priority_list_ = l;
return encap_changed;
}
void TunnelType::DeletePriorityList() {
priority_list_.clear();
}
/////////////////////////////////////////////////////////////////////////////
// NextHop routines
/////////////////////////////////////////////////////////////////////////////
NextHopTable::NextHopTable(DB *db, const string &name) : AgentDBTable(db, name){
// nh-index 0 is reserved by vrouter. So, pre-allocate the first index so
// that nh added by agent use index 1 and above
int id = index_table_.Insert(NULL);
assert(id == 0);
}
NextHopTable::~NextHopTable() {
FreeInterfaceId(0);
}
uint32_t NextHopTable::ReserveIndex() {
return index_table_.Insert(NULL);
}
void NextHop::SendObjectLog(const NextHopTable *table,
AgentLogEvent::type event) const {
NextHopObjectLogInfo info;
FillObjectLog(event, info);
OPER_TRACE_ENTRY(NextHop, table, info);
}
NextHop::~NextHop() {
if (id_ != kInvalidIndex) {
static_cast<NextHopTable *>(get_table())->FreeInterfaceId(id_);
}
}
void NextHop::FillObjectLog(AgentLogEvent::type event,
NextHopObjectLogInfo &info) const {
string type_str, policy_str("Disabled"), valid_str("Invalid"), str;
switch (type_) {
case NextHop::DISCARD:
type_str.assign("DISCARD");
break;
case NextHop::RECEIVE:
type_str.assign("RECEIVE");
break;
case NextHop::RESOLVE:
type_str.assign("RESOLVE");
break;
case NextHop::ARP:
type_str.assign("ARP");
break;
case NextHop::INTERFACE:
type_str.assign("INTERFACE");
break;
case NextHop::VRF:
type_str.assign("VRF");
break;
case NextHop::TUNNEL:
type_str.assign("TUNNEL");
break;
case NextHop::MIRROR:
type_str.assign("MIRROR");
break;
case NextHop::VLAN:
type_str.assign("VLAN");
break;
case NextHop::COMPOSITE:
type_str.assign("COMPOSITE");
break;
default:
type_str.assign("unknown");
}
if (policy_) {
policy_str.assign("Enabled");
}
if (valid_) {
valid_str.assign("Valid");
}
switch (event) {
case AgentLogEvent::ADD:
str.assign("Addition ");
break;
case AgentLogEvent::DELETE:
str.assign("Deletion ");
break;
case AgentLogEvent::CHANGE:
str.assign("Modification ");
break;
case AgentLogEvent::RESYNC:
str.assign("Resync ");
break;
default:
str.assign("unknown");
}
info.set_event(str);
info.set_type(type_str);
info.set_policy(policy_str);
info.set_valid(valid_str);
info.set_id(id_);
}
void NextHop::FillObjectLogIntf(const Interface *intf,
NextHopObjectLogInfo &info) {
if (intf) {
string if_type_str;
switch(intf->type()) {
case Interface::VM_INTERFACE:
if_type_str.assign("VM_INTERFACE");
break;
case Interface::PHYSICAL:
if_type_str.assign("ETH");
break;
case Interface::INET:
if_type_str.assign("VIRTUAL_HOST");
break;
case Interface::PACKET:
if_type_str.assign("PKT");
break;
default:
if_type_str.assign("Invalid");
break;
}
info.set_intf_type(if_type_str);
info.set_intf_uuid(UuidToString(intf->GetUuid()));
info.set_intf_name(intf->name());
}
}
void NextHop::FillObjectLogMac(const unsigned char *m,
NextHopObjectLogInfo &info) {
char mstr[32];
snprintf(mstr, 32, "%02x:%02x:%02x:%02x:%02x:%02x",
m[0], m[1], m[2], m[3], m[4], m[5]);
string mac(mstr);
info.set_mac(mac);
}
std::auto_ptr<DBEntry> NextHopTable::AllocEntry(const DBRequestKey *k) const {
return std::auto_ptr<DBEntry>(static_cast<DBEntry *>(AllocWithKey(k)));
}
NextHop *NextHopTable::AllocWithKey(const DBRequestKey *k) const {
const NextHopKey *key = static_cast<const NextHopKey *>(k);
return key->AllocEntry();
}
std::auto_ptr<DBEntry> NextHopTable::GetEntry(const DBRequestKey *key) const {
return std::auto_ptr<DBEntry>(AllocWithKey(key));
}
DBEntry *NextHopTable::Add(const DBRequest *req) {
const NextHopKey *key = static_cast<const NextHopKey *>(req->key.get());
NextHop *nh = AllocWithKey(key);
if (nh->CanAdd() == false) {
delete nh;
return NULL;
}
nh->set_id(index_table_.Insert(nh));
nh->Change(req);
nh->SendObjectLog(this, AgentLogEvent::ADD);
return static_cast<DBEntry *>(nh);
}
DBTableBase *NextHopTable::CreateTable(DB *db, const std::string &name) {
nexthop_table_ = new NextHopTable(db, name);
nexthop_table_->Init();
return nexthop_table_;
};
Interface *NextHopTable::FindInterface(const InterfaceKey &key) const {
return static_cast<Interface *>
(Agent::GetInstance()->interface_table()->FindActiveEntry(&key));
}
VrfEntry *NextHopTable::FindVrfEntry(const VrfKey &key) const {
return static_cast<VrfEntry *>(Agent::GetInstance()->vrf_table()->FindActiveEntry(&key));
}
void NextHopTable::Process(DBRequest &req) {
agent()->ConcurrencyCheck();
DBTablePartition *tpart =
static_cast<DBTablePartition *>(GetTablePartition(req.key.get()));
tpart->Process(NULL, &req);
}
void NextHopTable::OnZeroRefcount(AgentDBEntry *e) {
NextHop *nh = static_cast<NextHop *>(e);
if (nh->DeleteOnZeroRefCount() == false) {
return;
}
agent()->ConcurrencyCheck();
nh->OnZeroRefCount();
DBRequest req;
req.oper = DBRequest::DB_ENTRY_DELETE;
DBEntryBase::KeyPtr key = nh->GetDBRequestKey();
req.key = key;
req.data.reset(NULL);
Process(req);
}
void NextHop::SetKey(const DBRequestKey *key) {
const NextHopKey *nh_key = static_cast<const NextHopKey *>(key);
type_ = nh_key->type_;
policy_ = nh_key->policy_;
};
/////////////////////////////////////////////////////////////////////////////
// ARP NH routines
/////////////////////////////////////////////////////////////////////////////
NextHop *ArpNHKey::AllocEntry() const {
VrfEntry *vrf = static_cast<VrfEntry *>
(Agent::GetInstance()->vrf_table()->Find(&vrf_key_, true));
return new ArpNH(vrf, dip_);
}
bool ArpNH::CanAdd() const {
if (vrf_ == NULL) {
LOG(ERROR, "Invalid VRF in ArpNH. Skip Add");
return false;
}
return true;
}
bool ArpNH::NextHopIsLess(const DBEntry &rhs) const {
const ArpNH &a = static_cast<const ArpNH &>(rhs);
if (vrf_.get() != a.vrf_.get()) {
return vrf_.get() < a.vrf_.get();
}
return (ip_ < a.ip_);
}
void ArpNH::SetKey(const DBRequestKey *k) {
const ArpNHKey *key = static_cast<const ArpNHKey *>(k);
NextHop::SetKey(k);
vrf_ = NextHopTable::GetInstance()->FindVrfEntry(key->vrf_key_);
ip_ = key->dip_;
}
bool ArpNH::Change(const DBRequest *req) {
bool ret= false;
const ArpNHKey *key = static_cast<const ArpNHKey *>(req->key.get());
const ArpNHData *data = static_cast<const ArpNHData *>(req->data.get());
if (policy_ != key->policy_) {
policy_ = key->policy_;
ret = true;
}
if (valid_ != data->resolved_) {
valid_ = data->resolved_;
ret = true;
}
Interface *interface = NextHopTable::GetInstance()->FindInterface
(*data->intf_key_.get());
if (interface_.get() != interface) {
interface_ = interface;
ret = true;
}
if (!data->valid_) {
mac_.Zero();
return ret;
}
if (data->resolved_ != true) {
// If ARP is not resolved mac will be invalid
return ret;
}
if (mac_.CompareTo(data->mac_) != 0) {
mac_ = data->mac_;
ret = true;
}
return ret;
}
const uint32_t ArpNH::vrf_id() const {
return vrf_->vrf_id();
}
ArpNH::KeyPtr ArpNH::GetDBRequestKey() const {
NextHopKey *key = new ArpNHKey(vrf_->GetName(), ip_, policy_);
return DBEntryBase::KeyPtr(key);
}
const uuid &ArpNH::GetIfUuid() const {
return interface_->GetUuid();
}
void ArpNH::SendObjectLog(const NextHopTable *table,
AgentLogEvent::type event) const {
NextHopObjectLogInfo info;
FillObjectLog(event, info);
const Interface *intf = GetInterface();
FillObjectLogIntf(intf, info);
const VrfEntry *vrf = GetVrf();
if (vrf) {
info.set_vrf(vrf->GetName());
}
const Ip4Address *ip = GetIp();
info.set_dest_ip(ip->to_string());
const unsigned char *m = GetMac().GetData();
FillObjectLogMac(m, info);
OPER_TRACE_ENTRY(NextHop, table, info);
}
/////////////////////////////////////////////////////////////////////////////
// Interface NH routines
/////////////////////////////////////////////////////////////////////////////
NextHop *InterfaceNHKey::AllocEntry() const {
Interface *intf = static_cast<Interface *>
(Agent::GetInstance()->interface_table()->Find(intf_key_.get(), true));
if (intf && intf->IsDeleted() && intf->GetRefCount() == 0) {
//Ignore interface which are deleted, and there are no reference to it
//taking reference on deleted interface with refcount 0, would result
//in DB state set on deleted interface entry
intf = NULL;
}
return new InterfaceNH(intf, policy_, flags_);
}
bool InterfaceNH::CanAdd() const {
if (interface_ == NULL) {
LOG(ERROR, "Invalid Interface in InterfaceNH. Skip Add");
return false;
}
return true;
}
bool InterfaceNH::NextHopIsLess(const DBEntry &rhs) const {
const InterfaceNH &a = static_cast<const InterfaceNH &>(rhs);
if (interface_.get() != a.interface_.get()) {
return interface_.get() < a.interface_.get();
}
if (policy_ != a.policy_) {
return policy_ < a.policy_;
}
return flags_ < a.flags_;
}
InterfaceNH::KeyPtr InterfaceNH::GetDBRequestKey() const {
NextHopKey *key =
new InterfaceNHKey(static_cast<InterfaceKey *>(
interface_->GetDBRequestKey().release()),
policy_, flags_);
return DBEntryBase::KeyPtr(key);
}
void InterfaceNH::SetKey(const DBRequestKey *k) {
const InterfaceNHKey *key = static_cast<const InterfaceNHKey *>(k);
NextHop::SetKey(k);
interface_ = NextHopTable::GetInstance()->FindInterface(*key->intf_key_.get());
flags_ = key->flags_;
}
bool InterfaceNH::Change(const DBRequest *req) {
const InterfaceNHData *data =
static_cast<const InterfaceNHData *>(req->data.get());
bool ret = false;
VrfEntry *vrf = static_cast<VrfEntry *>
(Agent::GetInstance()->vrf_table()->FindActiveEntry(&data->vrf_key_));
if (vrf_.get() != vrf) {
vrf_ = vrf;
ret = true;
}
if (dmac_.CompareTo(data->dmac_) != 0) {
dmac_ = data->dmac_;
ret = true;
}
if (is_multicastNH()) {
dmac_ = MacAddress::BroadcastMac();
}
return ret;
}
const uuid &InterfaceNH::GetIfUuid() const {
return interface_->GetUuid();
}
static void AddInterfaceNH(const uuid &intf_uuid, const MacAddress &dmac,
uint8_t flags, bool policy, const string vrf_name) {
DBRequest req(DBRequest::DB_ENTRY_ADD_CHANGE);
req.key.reset(new InterfaceNHKey
(new VmInterfaceKey(AgentKey::ADD_DEL_CHANGE, intf_uuid, ""),
policy, flags));
req.data.reset(new InterfaceNHData(vrf_name, dmac));
Agent::GetInstance()->nexthop_table()->Process(req);
}
// Create 3 InterfaceNH for every Vm interface. One with policy another without
// policy, third one is for multicast.
void InterfaceNH::CreateL3VmInterfaceNH(const uuid &intf_uuid,
const MacAddress &dmac,
const string &vrf_name) {
AddInterfaceNH(intf_uuid, dmac, InterfaceNHFlags::INET4, true, vrf_name);
AddInterfaceNH(intf_uuid, dmac, InterfaceNHFlags::INET4, false, vrf_name);
}
void InterfaceNH::DeleteL3InterfaceNH(const uuid &intf_uuid) {
DeleteNH(intf_uuid, false, InterfaceNHFlags::INET4);
DeleteNH(intf_uuid, true, InterfaceNHFlags::INET4);
}
void InterfaceNH::CreateL2VmInterfaceNH(const uuid &intf_uuid,
const MacAddress &dmac,
const string &vrf_name) {
AddInterfaceNH(intf_uuid, dmac, InterfaceNHFlags::BRIDGE, false, vrf_name);
AddInterfaceNH(intf_uuid, dmac, InterfaceNHFlags::BRIDGE, true, vrf_name);
}
void InterfaceNH::DeleteL2InterfaceNH(const uuid &intf_uuid) {
DeleteNH(intf_uuid, false, InterfaceNHFlags::BRIDGE);
DeleteNH(intf_uuid, true, InterfaceNHFlags::BRIDGE);
}
void InterfaceNH::CreateMulticastVmInterfaceNH(const uuid &intf_uuid,
const MacAddress &dmac,
const string &vrf_name) {
AddInterfaceNH(intf_uuid, dmac, (InterfaceNHFlags::INET4 |
InterfaceNHFlags::MULTICAST), false,
vrf_name);
}
void InterfaceNH::DeleteMulticastVmInterfaceNH(const uuid &intf_uuid) {
DeleteNH(intf_uuid, false, (InterfaceNHFlags::MULTICAST |
InterfaceNHFlags::INET4));
}
void InterfaceNH::DeleteNH(const uuid &intf_uuid, bool policy,
uint8_t flags) {
DBRequest req(DBRequest::DB_ENTRY_DELETE);
req.key.reset(new InterfaceNHKey
(new VmInterfaceKey(AgentKey::ADD_DEL_CHANGE, intf_uuid, ""),
policy, flags));
req.data.reset(NULL);
NextHopTable::GetInstance()->Process(req);
}
// Delete the 2 InterfaceNH. One with policy another without policy
void InterfaceNH::DeleteVmInterfaceNHReq(const uuid &intf_uuid) {
DeleteNH(intf_uuid, false, InterfaceNHFlags::BRIDGE);
DeleteNH(intf_uuid, true, InterfaceNHFlags::BRIDGE);
DeleteNH(intf_uuid, false, InterfaceNHFlags::INET4);
DeleteNH(intf_uuid, true, InterfaceNHFlags::INET4);
DeleteNH(intf_uuid, false, InterfaceNHFlags::MULTICAST);
}
void InterfaceNH::CreateInetInterfaceNextHop(const string &ifname,
const string &vrf_name) {
DBRequest req;
req.oper = DBRequest::DB_ENTRY_ADD_CHANGE;
NextHopKey *key = new InterfaceNHKey(new InetInterfaceKey(ifname),
false, InterfaceNHFlags::INET4);
req.key.reset(key);
MacAddress mac;
mac.last_octet() = 1;
InterfaceNHData *data = new InterfaceNHData(vrf_name, mac);
req.data.reset(data);
NextHopTable::GetInstance()->Process(req);
}
void InterfaceNH::DeleteInetInterfaceNextHop(const string &ifname) {
DBRequest req;
req.oper = DBRequest::DB_ENTRY_DELETE;
NextHopKey *key = new InterfaceNHKey
(new InetInterfaceKey(ifname), false,
InterfaceNHFlags::INET4);
req.key.reset(key);
req.data.reset(NULL);
NextHopTable::GetInstance()->Process(req);
}
void InterfaceNH::CreatePacketInterfaceNh(const string &ifname) {
DBRequest req(DBRequest::DB_ENTRY_ADD_CHANGE);
MacAddress mac;
mac.last_octet() = 1;
req.key.reset(new InterfaceNHKey(new PacketInterfaceKey(nil_uuid(), ifname),
false, InterfaceNHFlags::INET4));
req.data.reset(new InterfaceNHData(Agent::GetInstance()->fabric_vrf_name(),
mac));
NextHopTable::GetInstance()->Process(req);
}
void InterfaceNH::DeleteHostPortReq(const string &ifname) {
DBRequest req;
req.oper = DBRequest::DB_ENTRY_DELETE;
NextHopKey *key = new InterfaceNHKey(new PacketInterfaceKey(nil_uuid(), ifname),
false, InterfaceNHFlags::INET4);
req.key.reset(key);
req.data.reset(NULL);
NextHopTable::GetInstance()->Enqueue(&req);
}
void InterfaceNH::CreatePhysicalInterfaceNh(const string &ifname,
const MacAddress &mac) {
DBRequest req(DBRequest::DB_ENTRY_ADD_CHANGE);
req.key.reset(new InterfaceNHKey(new PhysicalInterfaceKey(ifname),
false, InterfaceNHFlags::INET4));
req.data.reset(new InterfaceNHData(Agent::GetInstance()->fabric_vrf_name(),
mac));
NextHopTable::GetInstance()->Process(req);
}
void InterfaceNH::DeletePhysicalInterfaceNh(const string &ifname) {
DBRequest req(DBRequest::DB_ENTRY_DELETE);
req.key.reset(new InterfaceNHKey(new PhysicalInterfaceKey(ifname),
false, InterfaceNHFlags::INET4));
req.data.reset(NULL);
NextHopTable::GetInstance()->Process(req);
}
void InterfaceNH::SendObjectLog(const NextHopTable *table,
AgentLogEvent::type event) const {
NextHopObjectLogInfo info;
FillObjectLog(event, info);
const Interface *intf = GetInterface();
FillObjectLogIntf(intf, info);
const unsigned char *m = (unsigned char *)GetDMac().GetData();
FillObjectLogMac(m, info);
OPER_TRACE_ENTRY(NextHop, table, info);
}
/////////////////////////////////////////////////////////////////////////////
// VRF NH routines
/////////////////////////////////////////////////////////////////////////////
bool VrfNH::CanAdd() const {
if (vrf_ == NULL) {
LOG(ERROR, "Invalid VRF in VrfNH. Skip Add");
return false;
}
return true;
}
NextHop *VrfNHKey::AllocEntry() const {
VrfEntry *vrf = static_cast<VrfEntry *>
(Agent::GetInstance()->vrf_table()->Find(&vrf_key_, true));
return new VrfNH(vrf, policy_, vxlan_nh_);
}
bool VrfNH::NextHopIsLess(const DBEntry &rhs) const {
const VrfNH &a = static_cast<const VrfNH &>(rhs);
if (vrf_.get() != a.vrf_.get()) {
return (vrf_.get() < a.vrf_.get());
}
if (vxlan_nh_ != a.vxlan_nh_) {
return vxlan_nh_ < a.vxlan_nh_;
}
return policy_ < a.policy_;
}
void VrfNH::SetKey(const DBRequestKey *k) {
const VrfNHKey *key = static_cast<const VrfNHKey *>(k);
NextHop::SetKey(k);
vrf_ = NextHopTable::GetInstance()->FindVrfEntry(key->vrf_key_);
vxlan_nh_ = key->vxlan_nh_;
}
VrfNH::KeyPtr VrfNH::GetDBRequestKey() const {
NextHopKey *key = new VrfNHKey(vrf_->GetName(), policy_, vxlan_nh_);
return DBEntryBase::KeyPtr(key);
}
bool VrfNH::Change(const DBRequest *req) {
bool ret = false;
const VrfNHData *data = static_cast<const VrfNHData *>(req->data.get());
if (data->flood_unknown_unicast_ != flood_unknown_unicast_) {
flood_unknown_unicast_ = data->flood_unknown_unicast_;
ret = true;
}
return ret;
}
void VrfNH::SendObjectLog(const NextHopTable *table,
AgentLogEvent::type event) const {
NextHopObjectLogInfo info;
FillObjectLog(event, info);
const VrfEntry *vrf = GetVrf();
if (vrf) {
info.set_vrf(vrf->GetName());
}
OPER_TRACE_ENTRY(NextHop, table, info);
}
/////////////////////////////////////////////////////////////////////////////
// Tunnel NH routines
/////////////////////////////////////////////////////////////////////////////
TunnelNH::TunnelNH(VrfEntry *vrf, const Ip4Address &sip, const Ip4Address &dip,
bool policy, TunnelType type) :
NextHop(NextHop::TUNNEL, false, policy), vrf_(vrf, this), sip_(sip),
dip_(dip), tunnel_type_(type), arp_rt_(this), interface_(NULL), dmac_() {
}
TunnelNH::~TunnelNH() {
}
bool TunnelNH::CanAdd() const {
if (vrf_ == NULL) {
LOG(ERROR, "Invalid VRF in TunnelNH. Skip Add");
return false;
}
if (dip_.to_ulong() == 0) {
LOG(ERROR, "Invalid tunnel-destination in TunnelNH");
}
return true;
}
NextHop *TunnelNHKey::AllocEntry() const {
VrfEntry *vrf = static_cast<VrfEntry *>
(Agent::GetInstance()->vrf_table()->Find(&vrf_key_, true));
return new TunnelNH(vrf, sip_, dip_, policy_, tunnel_type_);
}
bool TunnelNH::NextHopIsLess(const DBEntry &rhs) const {
const TunnelNH &a = static_cast<const TunnelNH &>(rhs);
if (vrf_.get() != a.vrf_.get()) {
return vrf_.get() < a.vrf_.get();
}
if (sip_ != a.sip_) {
return sip_ < a.sip_;
}
if (dip_ != a.dip_) {
return dip_ < a.dip_;
}
if (!tunnel_type_.Compare(a.tunnel_type_)) {
return tunnel_type_.IsLess(a.tunnel_type_);
}
return policy_ < a.policy_;
}
void TunnelNH::SetKey(const DBRequestKey *k) {
const TunnelNHKey *key = static_cast<const TunnelNHKey *>(k);
NextHop::SetKey(k);
vrf_ = NextHopTable::GetInstance()->FindVrfEntry(key->vrf_key_);
sip_ = key->sip_;
dip_ = key->dip_;
tunnel_type_ = key->tunnel_type_;
policy_ = key->policy_;
}
TunnelNH::KeyPtr TunnelNH::GetDBRequestKey() const {
NextHopKey *key = new TunnelNHKey(vrf_->GetName(), sip_, dip_, policy_,
tunnel_type_);
return DBEntryBase::KeyPtr(key);
}
const uint32_t TunnelNH::vrf_id() const {
return vrf_->vrf_id();
}
bool TunnelNH::Change(const DBRequest *req) {
bool ret = false;
bool valid = false;
InetUnicastAgentRouteTable *rt_table =
(GetVrf()->GetInet4UnicastRouteTable());
InetUnicastRouteEntry *rt = rt_table->FindLPM(dip_);
if (!rt) {
//No route to reach destination, add to unresolved list
valid = false;
rt_table->AddUnresolvedNH(this);
} else if (rt->GetActiveNextHop()->GetType() == NextHop::RESOLVE) {
//Trigger ARP resolution
valid = false;
rt_table->AddUnresolvedNH(this);
const ResolveNH *nh =
static_cast<const ResolveNH *>(rt->GetActiveNextHop());
InetUnicastAgentRouteTable::AddArpReq(GetVrf()->GetName(), dip_,
nh->interface()->vrf()->GetName(),
nh->interface(),
nh->PolicyEnabled(),
rt->GetActivePath()->dest_vn_name(),
rt->GetActivePath()->sg_list());
rt = NULL;
} else {
valid = rt->GetActiveNextHop()->IsValid();
}
if (valid != valid_) {
valid_ = valid;
ret = true;
}
if (arp_rt_.get() != rt) {
arp_rt_.reset(rt);
ret = true;
}
//If route is present, check if the interface or mac
//address changed for the dependent route
if (valid_ && rt) {
//Check if the interface or mac
//of the dependent route has changed
//only then notify the route
const NextHop *active_nh = rt->GetActiveNextHop();
const Interface *intf = NULL;
MacAddress dmac;
if (active_nh->GetType() == NextHop::ARP) {
const ArpNH *arp_nh = static_cast<const ArpNH *>(active_nh);
dmac = arp_nh->GetMac();
intf = arp_nh->GetInterface();
} else if (active_nh->GetType() == NextHop::INTERFACE) {
const InterfaceNH *intf_nh =
static_cast<const InterfaceNH *>(active_nh);
intf = intf_nh->GetInterface();
dmac_.Zero();
}
if (dmac_ != dmac) {
dmac_ = dmac;
ret = true;
}
if (interface_ != intf) {
interface_ = intf;
ret = true;
}
}
return ret;
}
void TunnelNH::Delete(const DBRequest *req) {
InetUnicastAgentRouteTable *rt_table =
(GetVrf()->GetInet4UnicastRouteTable());
if (rt_table)
rt_table->RemoveUnresolvedNH(this);
}
void TunnelNH::SendObjectLog(const NextHopTable *table,
AgentLogEvent::type event) const {
NextHopObjectLogInfo info;
FillObjectLog(event, info);
const VrfEntry *vrf = GetVrf();
if (vrf) {
info.set_vrf(vrf->GetName());
}
const Ip4Address *sip = GetSip();
info.set_source_ip(sip->to_string());
const Ip4Address *dip = GetDip();
info.set_dest_ip(dip->to_string());
info.set_tunnel_type(tunnel_type_.ToString());
OPER_TRACE_ENTRY(NextHop, table, info);
}
/////////////////////////////////////////////////////////////////////////////
// Mirror NH routines
/////////////////////////////////////////////////////////////////////////////
bool MirrorNH::CanAdd() const {
if (vrf_ == NULL) {
LOG(ERROR, "Invalid VRF in mirror NH");
return false;
}
return true;
}
NextHop *MirrorNHKey::AllocEntry() const {
VrfEntry *vrf = static_cast<VrfEntry *>
(Agent::GetInstance()->vrf_table()->Find(&vrf_key_, true));
return new MirrorNH(vrf, sip_, sport_, dip_, dport_);
}
bool MirrorNH::NextHopIsLess(const DBEntry &rhs) const {
const MirrorNH &a = static_cast<const MirrorNH &>(rhs);
if ((vrf_.get() != a.vrf_.get())) {
return vrf_.get() < a.vrf_.get();
}
if (dip_ != a.dip_) {
return dip_ < a.dip_;
}
return (dport_ < a.dport_);
}
const uint32_t MirrorNH::vrf_id() const {
return (vrf_ ? vrf_->vrf_id() : (uint32_t)-1);
}
void MirrorNH::SetKey(const DBRequestKey *k) {
const MirrorNHKey *key = static_cast<const MirrorNHKey *>(k);
NextHop::SetKey(k);
vrf_ = NextHopTable::GetInstance()->FindVrfEntry(key->vrf_key_);
sip_ = key->sip_;
sport_ = key->sport_;
dip_ = key->dip_;
dport_ = key->dport_;
}
MirrorNH::KeyPtr MirrorNH::GetDBRequestKey() const {
NextHopKey *key = new MirrorNHKey((vrf_ ? vrf_->GetName() : ""),
sip_, sport_, dip_, dport_);
return DBEntryBase::KeyPtr(key);
}
bool MirrorNH::Change(const DBRequest *req) {
bool ret = false;
bool valid = false;
if (GetVrf() == NULL) {
valid_ = true;
return true;
}
InetUnicastAgentRouteTable *rt_table =
(GetVrf()->GetInet4UnicastRouteTable());
InetUnicastRouteEntry *rt = rt_table->FindLPM(dip_);
if (!rt) {
//No route to reach destination, add to unresolved list
valid = false;
rt_table->AddUnresolvedNH(this);
} else if ((rt->GetActiveNextHop()->GetType() == NextHop::RESOLVE) &&
(GetVrf()->GetName() == Agent::GetInstance()->fabric_vrf_name())) {
//Trigger ARP resolution
valid = false;
rt_table->AddUnresolvedNH(this);
const ResolveNH *nh =
static_cast<const ResolveNH *>(rt->GetActiveNextHop());
InetUnicastAgentRouteTable::AddArpReq(GetVrf()->GetName(), dip_,
nh->interface()->vrf()->GetName(),
nh->interface(),
nh->PolicyEnabled(),
rt->GetActivePath()->dest_vn_name(),
rt->GetActivePath()->sg_list());
rt = NULL;
} else {
valid = rt->GetActiveNextHop()->IsValid();
}
if (valid != valid_) {
valid_ = valid;
ret = true;
}
if (arp_rt_.get() != rt) {
arp_rt_.reset(rt);
ret = true;
}
//If route is present, check if the interface or mac
//address changed for the dependent route
if (valid_ && rt) {
//Check if the interface or mac
//of the dependent route has changed
//only then notify the route
const NextHop *active_nh = rt->GetActiveNextHop();
const Interface *intf = NULL;
MacAddress dmac;
if (active_nh->GetType() == NextHop::ARP) {
const ArpNH *arp_nh = static_cast<const ArpNH *>(active_nh);
dmac = arp_nh->GetMac();
intf = arp_nh->GetInterface();
} else if (active_nh->GetType() == NextHop::INTERFACE) {
const InterfaceNH *intf_nh =
static_cast<const InterfaceNH *>(active_nh);
intf = intf_nh->GetInterface();
dmac_.Zero();
}
if (dmac_ != dmac) {
dmac_ = dmac;
ret = true;
}
if (interface_ != intf) {
interface_ = intf;
ret = true;
}
}
return ret;
}
void MirrorNH::Delete(const DBRequest *req) {
if (!GetVrf()) {
return;
}
InetUnicastAgentRouteTable *rt_table =
(GetVrf()->GetInet4UnicastRouteTable());
rt_table->RemoveUnresolvedNH(this);
}