/
routing_instance.cc
1323 lines (1146 loc) · 44.6 KB
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routing_instance.cc
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/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
#include "bgp/routing-instance/routing_instance.h"
#include <boost/foreach.hpp>
#include <boost/assign/list_of.hpp>
#include "base/set_util.h"
#include "base/task_annotations.h"
#include "bgp/bgp_config.h"
#include "bgp/bgp_factory.h"
#include "bgp/bgp_log.h"
#include "bgp/bgp_server.h"
#include "bgp/bgp_table_types.h"
#include "bgp/routing-instance/iroute_aggregator.h"
#include "bgp/routing-instance/iservice_chain_mgr.h"
#include "bgp/routing-instance/istatic_route_mgr.h"
#include "bgp/routing-instance/peer_manager.h"
#include "bgp/routing-instance/routepath_replicator.h"
#include "bgp/routing-instance/routing_instance_log.h"
#include "bgp/routing-policy/routing_policy.h"
#include "bgp/routing-instance/rtarget_group_mgr.h"
#include "bgp/rtarget/rtarget_route.h"
using boost::assign::list_of;
using boost::system::error_code;
using std::make_pair;
using std::set;
using std::string;
using std::vector;
SandeshTraceBufferPtr RoutingInstanceTraceBuf(
SandeshTraceBufferCreate(RTINSTANCE_TRACE_BUF, 1000));
class RoutingInstanceMgr::DeleteActor : public LifetimeActor {
public:
explicit DeleteActor(RoutingInstanceMgr *manager)
: LifetimeActor(manager->server_->lifetime_manager()),
manager_(manager) {
}
virtual bool MayDelete() const {
return true;
}
virtual void Shutdown() {
}
virtual void Destroy() {
// memory is deallocated by BgpServer scoped_ptr.
manager_->server_delete_ref_.Reset(NULL);
}
private:
RoutingInstanceMgr *manager_;
};
RoutingInstanceMgr::RoutingInstanceMgr(BgpServer *server) :
server_(server),
deleted_count_(0),
asn_listener_id_(server->RegisterASNUpdateCallback(
boost::bind(&RoutingInstanceMgr::ASNUpdateCallback, this, _1, _2))),
identifier_listener_id_(server->RegisterIdentifierUpdateCallback(
boost::bind(&RoutingInstanceMgr::IdentifierUpdateCallback,
this, _1))),
deleter_(new DeleteActor(this)),
server_delete_ref_(this, server->deleter()) {
}
RoutingInstanceMgr::~RoutingInstanceMgr() {
assert(deleted_count_ == 0);
server_->UnregisterASNUpdateCallback(asn_listener_id_);
server_->UnregisterIdentifierUpdateCallback(identifier_listener_id_);
}
void RoutingInstanceMgr::ManagedDelete() {
deleter_->Delete();
}
LifetimeActor *RoutingInstanceMgr::deleter() {
return deleter_.get();
}
bool RoutingInstanceMgr::deleted() {
return deleter()->IsDeleted();
}
//
// Return the default routing instance.
//
const RoutingInstance *RoutingInstanceMgr::GetDefaultRoutingInstance() const {
return instances_.Find(BgpConfigManager::kMasterInstance);
}
//
// Go through all export targets for the RoutingInstance and add an entry for
// each one to the InstanceTargetMap.
//
// Ignore export targets that are not in the import list. This is done since
// export only targets are managed by user and the same export only target can
// be configured on multiple virtual networks.
//
void RoutingInstanceMgr::InstanceTargetAdd(RoutingInstance *rti) {
for (RoutingInstance::RouteTargetList::const_iterator it =
rti->GetExportList().begin(); it != rti->GetExportList().end(); ++it) {
if (rti->GetImportList().find(*it) == rti->GetImportList().end())
continue;
target_map_.insert(make_pair(*it, rti));
}
}
//
// Go through all export targets for the RoutingInstance and remove the entry
// for each one from the InstanceTargetMap. Note that there may be multiple
// entries in the InstanceTargetMap for a given export target. Hence we need
// to make sure that we only remove the entry that matches the RoutingInstance.
//
// Ignore export targets that are not in the import list. They shouldn't be in
// in the map because of the same check in InstanceTargetAdd.
//
void RoutingInstanceMgr::InstanceTargetRemove(const RoutingInstance *rti) {
for (RoutingInstance::RouteTargetList::const_iterator it =
rti->GetExportList().begin(); it != rti->GetExportList().end(); ++it) {
if (rti->GetImportList().find(*it) == rti->GetImportList().end())
continue;
for (InstanceTargetMap::iterator loc = target_map_.find(*it);
loc != target_map_.end() && loc->first == *it; ++loc) {
if (loc->second == rti) {
target_map_.erase(loc);
break;
}
}
}
}
//
// Lookup the RoutingInstance for the given RouteTarget.
//
const RoutingInstance *RoutingInstanceMgr::GetInstanceByTarget(
const RouteTarget &rtarget) const {
InstanceTargetMap::const_iterator loc = target_map_.find(rtarget);
if (loc == target_map_.end()) {
return NULL;
}
return loc->second;
}
//
// Add an entry for the vn index to the VnIndexMap.
//
void RoutingInstanceMgr::InstanceVnIndexAdd(RoutingInstance *rti) {
if (rti->virtual_network_index())
vn_index_map_.insert(make_pair(rti->virtual_network_index(), rti));
}
//
// Remove the entry for the vn index from the VnIndexMap. Note that there may
// be multiple entries in the VnIndexMap for a given vn index target. Hence we
// need to make sure that we remove the entry that matches the RoutingInstance.
//
void RoutingInstanceMgr::InstanceVnIndexRemove(const RoutingInstance *rti) {
if (!rti->virtual_network_index())
return;
int vn_index = rti->virtual_network_index();
for (VnIndexMap::iterator loc = vn_index_map_.find(vn_index);
loc != vn_index_map_.end() && loc->first == vn_index; ++loc) {
if (loc->second == rti) {
vn_index_map_.erase(loc);
break;
}
}
}
//
// Lookup the RoutingInstance for the given vn index.
//
const RoutingInstance *RoutingInstanceMgr::GetInstanceByVnIndex(
int vn_index) const {
VnIndexMap::const_iterator loc = vn_index_map_.find(vn_index);
if (loc == vn_index_map_.end())
return NULL;
return loc->second;
}
//
// Lookup the VN name for the given vn index.
//
string RoutingInstanceMgr::GetVirtualNetworkByVnIndex(
int vn_index) const {
const RoutingInstance *rti = GetInstanceByVnIndex(vn_index);
return rti ? rti->virtual_network() : "unresolved";
}
//
// Lookup the vn index for the given RouteTarget.
//
// Return 0 if the RouteTarget does not map to a RoutingInstance.
// Return -1 if the RouteTarget maps to multiple RoutingInstances
// that belong to different VNs.
//
int RoutingInstanceMgr::GetVnIndexByRouteTarget(
const RouteTarget &rtarget) const {
int vn_index = 0;
for (InstanceTargetMap::const_iterator loc = target_map_.find(rtarget);
loc != target_map_.end() && loc->first == rtarget; ++loc) {
int ri_vn_index = loc->second->virtual_network_index();
if (vn_index && ri_vn_index && ri_vn_index != vn_index)
return -1;
vn_index = ri_vn_index;
}
return vn_index;
}
//
// Derive the vn index from the route targets in the ExtCommunity.
//
// If the result is ambiguous i.e. we have a RouteTarget that maps
// to multiple vn indexes or we have multiple RouteTargets that map
// to different vn indexes, return 0.
//
int RoutingInstanceMgr::GetVnIndexByExtCommunity(
const ExtCommunity *ext_community) const {
int vn_index = 0;
BOOST_FOREACH(const ExtCommunity::ExtCommunityValue &comm,
ext_community->communities()) {
if (!ExtCommunity::is_route_target(comm))
continue;
RouteTarget rtarget(comm);
int rtgt_vn_index = GetVnIndexByRouteTarget(rtarget);
if (rtgt_vn_index < 0 ||
(vn_index && rtgt_vn_index && rtgt_vn_index != vn_index)) {
vn_index = 0;
break;
} else if (rtgt_vn_index) {
vn_index = rtgt_vn_index;
}
}
return vn_index;
}
int
RoutingInstanceMgr::RegisterInstanceOpCallback(RoutingInstanceCb callback) {
tbb::spin_rw_mutex::scoped_lock write_lock(rw_mutex_, true);
size_t i = bmap_.find_first();
if (i == bmap_.npos) {
i = callbacks_.size();
callbacks_.push_back(callback);
} else {
bmap_.reset(i);
if (bmap_.none()) {
bmap_.clear();
}
callbacks_[i] = callback;
}
return i;
}
void RoutingInstanceMgr::UnregisterInstanceOpCallback(int listener) {
tbb::spin_rw_mutex::scoped_lock write_lock(rw_mutex_, true);
callbacks_[listener] = NULL;
if ((size_t) listener == callbacks_.size() - 1) {
while (!callbacks_.empty() && callbacks_.back() == NULL) {
callbacks_.pop_back();
}
if (bmap_.size() > callbacks_.size()) {
bmap_.resize(callbacks_.size());
}
} else {
if ((size_t) listener >= bmap_.size()) {
bmap_.resize(listener + 1);
}
bmap_.set(listener);
}
}
void RoutingInstanceMgr::NotifyInstanceOp(string name, Operation op) {
tbb::spin_rw_mutex::scoped_lock read_lock(rw_mutex_, false);
for (InstanceOpListenersList::iterator iter = callbacks_.begin();
iter != callbacks_.end(); ++iter) {
if (*iter != NULL) {
RoutingInstanceCb cb = *iter;
(cb)(name, op);
}
}
}
RoutingInstance *RoutingInstanceMgr::CreateRoutingInstance(
const BgpInstanceConfig *config) {
RoutingInstance *rtinstance = GetRoutingInstance(config->name());
if (rtinstance) {
if (rtinstance->deleted()) {
RTINSTANCE_LOG_MESSAGE(server_,
SandeshLevel::SYS_WARN, RTINSTANCE_LOG_FLAG_ALL, config->name(),
"Instance is recreated before pending deletion is complete");
return NULL;
} else {
// Duplicate instance creation request can be safely ignored
RTINSTANCE_LOG_MESSAGE(server_,
SandeshLevel::SYS_WARN, RTINSTANCE_LOG_FLAG_ALL, config->name(),
"Instance already found during creation");
}
return rtinstance;
}
rtinstance = BgpObjectFactory::Create<RoutingInstance>(
config->name(), server_, this, config);
int index = instances_.Insert(config->name(), rtinstance);
rtinstance->set_index(index);
rtinstance->ProcessConfig();
InstanceTargetAdd(rtinstance);
InstanceVnIndexAdd(rtinstance);
rtinstance->InitAllRTargetRoutes(server_->local_autonomous_system());
// Notify clients about routing instance create
NotifyInstanceOp(config->name(), INSTANCE_ADD);
vector<string> import_rt(config->import_list().begin(),
config->import_list().end());
vector<string> export_rt(config->export_list().begin(),
config->export_list().end());
RTINSTANCE_LOG(Create, rtinstance,
SandeshLevel::SYS_DEBUG, RTINSTANCE_LOG_FLAG_ALL,
import_rt, export_rt,
rtinstance->virtual_network(), rtinstance->virtual_network_index());
return rtinstance;
}
void RoutingInstanceMgr::UpdateRoutingInstance(
const BgpInstanceConfig *config) {
CHECK_CONCURRENCY("bgp::Config");
RoutingInstance *rtinstance = GetRoutingInstance(config->name());
if (rtinstance && rtinstance->deleted()) {
RTINSTANCE_LOG_MESSAGE(server_,
SandeshLevel::SYS_WARN, RTINSTANCE_LOG_FLAG_ALL, config->name(),
"Instance is updated before pending deletion is complete");
return;
} else if (!rtinstance) {
RTINSTANCE_LOG_MESSAGE(server_,
SandeshLevel::SYS_WARN, RTINSTANCE_LOG_FLAG_ALL, config->name(),
"Instance not found during update");
return;
}
bool old_always_subscribe = rtinstance->always_subscribe();
// Note that InstanceTarget[Remove|Add] depend on the RouteTargetList in
// the RoutingInstance.
InstanceTargetRemove(rtinstance);
InstanceVnIndexRemove(rtinstance);
rtinstance->UpdateConfig(config);
InstanceTargetAdd(rtinstance);
InstanceVnIndexAdd(rtinstance);
if (old_always_subscribe != rtinstance->always_subscribe()) {
rtinstance->FlushAllRTargetRoutes(server_->local_autonomous_system());
rtinstance->InitAllRTargetRoutes(server_->local_autonomous_system());
}
// Notify clients about routing instance create
NotifyInstanceOp(config->name(), INSTANCE_UPDATE);
vector<string> import_rt(config->import_list().begin(),
config->import_list().end());
vector<string> export_rt(config->export_list().begin(),
config->export_list().end());
RTINSTANCE_LOG(Update, rtinstance,
SandeshLevel::SYS_DEBUG, RTINSTANCE_LOG_FLAG_ALL, import_rt, export_rt,
rtinstance->virtual_network(), rtinstance->virtual_network_index());
}
//
// Concurrency: BGP Config task
//
// Trigger deletion of a particular routing-instance
//
// This involves several asynchronous steps such as deleting all tables in
// routing-instance (flush all notifications, registrations and user data).
//
void RoutingInstanceMgr::DeleteRoutingInstance(const string &name) {
CHECK_CONCURRENCY("bgp::Config");
RoutingInstance *rtinstance = GetRoutingInstance(name);
// Ignore if instance is not found as it might already have been deleted.
if (rtinstance && rtinstance->deleted()) {
RTINSTANCE_LOG_MESSAGE(server_,
SandeshLevel::SYS_WARN, RTINSTANCE_LOG_FLAG_ALL, name,
"Duplicate instance delete while pending deletion");
return;
} else if (!rtinstance) {
RTINSTANCE_LOG_MESSAGE(server_,
SandeshLevel::SYS_WARN, RTINSTANCE_LOG_FLAG_ALL, name,
"Instance not found during delete");
return;
}
InstanceVnIndexRemove(rtinstance);
InstanceTargetRemove(rtinstance);
rtinstance->ClearConfig();
RTINSTANCE_LOG(Delete, rtinstance,
SandeshLevel::SYS_DEBUG, RTINSTANCE_LOG_FLAG_ALL);
rtinstance->ProcessServiceChainConfig();
rtinstance->FlushStaticRouteConfig();
rtinstance->FlushRouteAggregationConfig();
NotifyInstanceOp(name, INSTANCE_DELETE);
rtinstance->ManagedDelete();
}
//
// Concurrency: Called from BGP config task manager
//
// Destroy a routing instance from the data structures
//
void RoutingInstanceMgr::DestroyRoutingInstance(RoutingInstance *rtinstance) {
CHECK_CONCURRENCY("bgp::Config");
RTINSTANCE_LOG(Destroy, rtinstance,
SandeshLevel::SYS_DEBUG, RTINSTANCE_LOG_FLAG_ALL);
// Delete instance stats uve.
RoutingInstanceStatsData instance_info;
instance_info.set_name(rtinstance->name());
instance_info.set_deleted(true);
RoutingInstanceStats::Send(instance_info);
// Remove call here also deletes the instance.
const string name = rtinstance->name();
instances_.Remove(rtinstance->name(), rtinstance->index());
if (deleted())
return;
if (name == BgpConfigManager::kMasterInstance)
return;
const BgpInstanceConfig *config
= server()->config_manager()->FindInstance(name);
if (config) {
CreateRoutingInstance(config);
return;
}
}
void RoutingInstanceMgr::ASNUpdateCallback(as_t old_asn, as_t old_local_asn) {
if (server_->local_autonomous_system() == old_local_asn)
return;
for (RoutingInstanceIterator it = begin(); it != end(); ++it) {
it->FlushAllRTargetRoutes(old_local_asn);
it->InitAllRTargetRoutes(server_->local_autonomous_system());
}
}
void RoutingInstanceMgr::IdentifierUpdateCallback(Ip4Address old_identifier) {
for (RoutingInstanceIterator it = begin(); it != end(); ++it) {
it->FlushAllRTargetRoutes(server_->local_autonomous_system());
it->InitAllRTargetRoutes(server_->local_autonomous_system());
}
}
class RoutingInstance::DeleteActor : public LifetimeActor {
public:
DeleteActor(BgpServer *server, RoutingInstance *parent)
: LifetimeActor(server->lifetime_manager()), parent_(parent) {
}
virtual bool MayDelete() const {
return parent_->MayDelete();
}
virtual void Shutdown() {
parent_->mgr_->increment_deleted_count();
parent_->mgr_->NotifyInstanceOp(parent_->name(),
RoutingInstanceMgr::INSTANCE_DELETE);
parent_->Shutdown();
}
virtual void Destroy() {
parent_->mgr_->decrement_deleted_count();
parent_->mgr_->DestroyRoutingInstance(parent_);
}
private:
RoutingInstance *parent_;
};
RoutingInstance::RoutingInstance(string name, BgpServer *server,
RoutingInstanceMgr *mgr,
const BgpInstanceConfig *config)
: name_(name), index_(-1), server_(server), mgr_(mgr), config_(config),
is_master_(false), always_subscribe_(false), virtual_network_index_(0),
virtual_network_allow_transit_(false),
vxlan_id_(0),
deleter_(new DeleteActor(server, this)),
manager_delete_ref_(this, mgr->deleter()) {
}
RoutingInstance::~RoutingInstance() {
}
void RoutingInstance::ProcessRoutingPolicyConfig() {
RoutingPolicyMgr *policy_mgr = server()->routing_policy_mgr();
BOOST_FOREACH(RoutingPolicyAttachInfo info,
config_->routing_policy_list()) {
RoutingPolicy *policy =
policy_mgr->GetRoutingPolicy(info.routing_policy_);
if (policy) {
routing_policies_.push_back(make_pair(policy,
policy->generation()));
}
}
}
//
// Update the routing policy on the instance
// 1. New policy is added
// 2. Policy order changed
// 3. Policy is removed
// 4. Existing policy gets updated(terms in the policy got modified)
// In any of the above cases, we call routing policy manager to re-evaluate the
// routes in the BgpTables of this routing instance with new set of policies
//
void RoutingInstance::UpdateRoutingPolicyConfig() {
CHECK_CONCURRENCY("bgp::Config");
RoutingPolicyMgr *policy_mgr = server()->routing_policy_mgr();
if (policy_mgr->UpdateRoutingPolicyList(config_->routing_policy_list(),
routing_policies())) {
// Let RoutingPolicyMgr handle update of routing policy on the instance
policy_mgr->ApplyRoutingPolicy(this);
}
}
void RoutingInstance::ProcessServiceChainConfig() {
vector<Address::Family> families = list_of(Address::INET)(Address::INET6);
BOOST_FOREACH(Address::Family family, families) {
const ServiceChainConfig *sc_config =
config_ ? config_->service_chain_info(family) : NULL;
IServiceChainMgr *manager = server_->service_chain_mgr(family);
if (sc_config && !sc_config->routing_instance.empty()) {
manager->LocateServiceChain(this, *sc_config);
} else {
manager->StopServiceChain(this);
}
}
}
void RoutingInstance::ProcessStaticRouteConfig() {
if (is_master_)
return;
vector<Address::Family> families = list_of(Address::INET)(Address::INET6);
BOOST_FOREACH(Address::Family family, families) {
IStaticRouteMgr *manager = static_route_mgr(family);
if (!manager && !config_->static_routes(family).empty())
manager = LocateStaticRouteMgr(family);
if (manager)
manager->ProcessStaticRouteConfig();
}
}
void RoutingInstance::UpdateStaticRouteConfig() {
if (is_master_)
return;
vector<Address::Family> families = list_of(Address::INET)(Address::INET6);
BOOST_FOREACH(Address::Family family, families) {
IStaticRouteMgr *manager = static_route_mgr(family);
if (!manager && !config_->static_routes(family).empty())
manager = LocateStaticRouteMgr(family);
if (manager)
manager->UpdateStaticRouteConfig();
}
}
void RoutingInstance::FlushStaticRouteConfig() {
if (is_master_)
return;
vector<Address::Family> families = list_of(Address::INET)(Address::INET6);
BOOST_FOREACH(Address::Family family, families) {
IStaticRouteMgr *manager = static_route_mgr(family);
if (manager)
manager->FlushStaticRouteConfig();
}
}
void RoutingInstance::UpdateAllStaticRoutes() {
if (is_master_)
return;
vector<Address::Family> families = list_of(Address::INET)(Address::INET6);
BOOST_FOREACH(Address::Family family, families) {
IStaticRouteMgr *manager = static_route_mgr(family);
if (manager)
manager->UpdateAllRoutes();
}
}
void RoutingInstance::ProcessRouteAggregationConfig() {
if (is_master_)
return;
vector<Address::Family> families = list_of(Address::INET)(Address::INET6);
BOOST_FOREACH(Address::Family family, families) {
IRouteAggregator *aggregator = route_aggregator(family);
if (!aggregator && !config_->aggregate_routes(family).empty())
aggregator = LocateRouteAggregator(family);
if (aggregator)
aggregator->ProcessAggregateRouteConfig();
}
}
void RoutingInstance::UpdateRouteAggregationConfig() {
if (is_master_)
return;
vector<Address::Family> families = list_of(Address::INET)(Address::INET6);
BOOST_FOREACH(Address::Family family, families) {
IRouteAggregator *aggregator = route_aggregator(family);
if (!aggregator && !config_->aggregate_routes(family).empty())
aggregator = LocateRouteAggregator(family);
if (aggregator)
aggregator->UpdateAggregateRouteConfig();
}
}
void RoutingInstance::FlushRouteAggregationConfig() {
if (is_master_)
return;
vector<Address::Family> families = list_of(Address::INET)(Address::INET6);
BOOST_FOREACH(Address::Family family, families) {
IRouteAggregator *aggregator = route_aggregator(family);
if (aggregator)
aggregator->FlushAggregateRouteConfig();
}
}
void RoutingInstance::ProcessConfig() {
RoutingInstanceInfo info = GetDataCollection("");
// Initialize virtual network info.
virtual_network_ = config_->virtual_network();
virtual_network_index_ = config_->virtual_network_index();
virtual_network_allow_transit_ = config_->virtual_network_allow_transit();
vxlan_id_ = config_->vxlan_id();
// Always subscribe (using RTF) for RTs of PNF service chain instances.
always_subscribe_ = config_->has_pnf();
vector<string> import_rt, export_rt;
BOOST_FOREACH(string irt, config_->import_list()) {
import_.insert(RouteTarget::FromString(irt));
import_rt.push_back(irt);
}
BOOST_FOREACH(string ert, config_->export_list()) {
export_.insert(RouteTarget::FromString(ert));
export_rt.push_back(ert);
}
if (import_rt.size())
info.set_add_import_rt(import_rt);
if (export_rt.size())
info.set_add_export_rt(export_rt);
if (import_rt.size() || export_rt.size())
ROUTING_INSTANCE_COLLECTOR_INFO(info);
// Create BGP Table
if (name_ == BgpConfigManager::kMasterInstance) {
assert(mgr_->count() == 1);
is_master_ = true;
LocatePeerManager();
VpnTableCreate(Address::INETVPN);
VpnTableCreate(Address::INET6VPN);
VpnTableCreate(Address::ERMVPN);
VpnTableCreate(Address::EVPN);
RTargetTableCreate();
BgpTable *table_inet = static_cast<BgpTable *>(
server_->database()->CreateTable("inet.0"));
assert(table_inet);
AddTable(table_inet);
BgpTable *table_inet6 = static_cast<BgpTable *>(
server_->database()->CreateTable("inet6.0"));
assert(table_inet6);
AddTable(table_inet6);
} else {
// Create foo.family.0.
VrfTableCreate(Address::INET, Address::INETVPN);
VrfTableCreate(Address::INET6, Address::INET6VPN);
VrfTableCreate(Address::ERMVPN, Address::ERMVPN);
VrfTableCreate(Address::EVPN, Address::EVPN);
}
ProcessServiceChainConfig();
ProcessStaticRouteConfig();
ProcessRouteAggregationConfig();
ProcessRoutingPolicyConfig();
}
void RoutingInstance::UpdateConfig(const BgpInstanceConfig *cfg) {
CHECK_CONCURRENCY("bgp::Config");
// This is a noop in production code. However unit tests may pass a
// new object.
config_ = cfg;
// Always subscribe (using RTF) for RTs of PNF service chain instances.
always_subscribe_ = config_->has_pnf();
// Figure out if there's a significant configuration change that requires
// notifying routes to all listeners.
bool notify_routes = false;
if (virtual_network_allow_transit_ != cfg->virtual_network_allow_transit())
notify_routes = true;
if (virtual_network_ != cfg->virtual_network())
notify_routes = true;
if (virtual_network_index_ != cfg->virtual_network_index())
notify_routes = true;
// Trigger notification of all routes in each table.
if (notify_routes) {
BOOST_FOREACH(RouteTableList::value_type &entry, vrf_tables_by_name_) {
BgpTable *table = entry.second;
table->NotifyAllEntries();
}
}
// Update all static routes so that they reflect the new OriginVn.
if (virtual_network_index_ != cfg->virtual_network_index())
UpdateAllStaticRoutes();
// Update virtual network info.
virtual_network_ = cfg->virtual_network();
virtual_network_index_ = cfg->virtual_network_index();
virtual_network_allow_transit_ = cfg->virtual_network_allow_transit();
vxlan_id_ = cfg->vxlan_id();
// Master routing instance doesn't have import & export list
// Master instance imports and exports all RT
if (IsMasterRoutingInstance())
return;
RouteTargetList future_import;
vector<string> add_import_rt, remove_import_rt;
BOOST_FOREACH(const string &rtarget_str, cfg->import_list()) {
future_import.insert(RouteTarget::FromString(rtarget_str));
}
set_synchronize(&import_, &future_import,
boost::bind(&RoutingInstance::AddRouteTarget, this, true,
&add_import_rt, _1),
boost::bind(&RoutingInstance::DeleteRouteTarget, this, true,
&remove_import_rt, _1));
RouteTargetList future_export;
vector<string> add_export_rt, remove_export_rt;
BOOST_FOREACH(const string &rtarget_str, cfg->export_list()) {
future_export.insert(RouteTarget::FromString(rtarget_str));
}
set_synchronize(&export_, &future_export,
boost::bind(&RoutingInstance::AddRouteTarget, this, false,
&add_export_rt, _1),
boost::bind(&RoutingInstance::DeleteRouteTarget, this, false,
&remove_export_rt, _1));
RoutingInstanceInfo info = GetDataCollection("");
if (add_import_rt.size())
info.set_add_import_rt(add_import_rt);
if (remove_import_rt.size())
info.set_remove_import_rt(remove_import_rt);
if (add_export_rt.size())
info.set_add_export_rt(add_export_rt);
if (remove_export_rt.size())
info.set_remove_export_rt(remove_export_rt);
if (add_import_rt.size() || remove_import_rt.size() ||
add_export_rt.size() || remove_export_rt.size())
ROUTING_INSTANCE_COLLECTOR_INFO(info);
ProcessServiceChainConfig();
UpdateStaticRouteConfig();
UpdateRouteAggregationConfig();
UpdateRoutingPolicyConfig();
}
void RoutingInstance::ClearConfig() {
CHECK_CONCURRENCY("bgp::Config");
config_ = NULL;
}
void RoutingInstance::ManagedDelete() {
// RoutingInstanceMgr logs the delete for non-master instances.
if (IsMasterRoutingInstance()) {
RTINSTANCE_LOG(Delete, this,
SandeshLevel::SYS_DEBUG, RTINSTANCE_LOG_FLAG_ALL);
}
deleter_->Delete();
}
void RoutingInstance::Shutdown() {
CHECK_CONCURRENCY("bgp::Config");
RTINSTANCE_LOG(Shutdown, this,
SandeshLevel::SYS_DEBUG, RTINSTANCE_LOG_FLAG_ALL);
ClearConfig();
FlushAllRTargetRoutes(server_->local_autonomous_system());
ClearRouteTarget();
ProcessServiceChainConfig();
FlushStaticRouteConfig();
FlushRouteAggregationConfig();
}
bool RoutingInstance::MayDelete() const {
return true;
}
LifetimeActor *RoutingInstance::deleter() {
return deleter_.get();
}
const LifetimeActor *RoutingInstance::deleter() const {
return deleter_.get();
}
bool RoutingInstance::deleted() const {
return deleter()->IsDeleted();
}
const string RoutingInstance::GetVirtualNetworkName() const {
if (!virtual_network_.empty())
return virtual_network_;
size_t pos = name_.rfind(':');
if (pos == string::npos) {
return name_;
} else {
return name_.substr(0, pos);
}
}
const string RoutingInstance::virtual_network() const {
return virtual_network_.empty() ? "unresolved" : virtual_network_;
}
int RoutingInstance::virtual_network_index() const {
return virtual_network_index_;
}
bool RoutingInstance::virtual_network_allow_transit() const {
return virtual_network_allow_transit_;
}
int RoutingInstance::vxlan_id() const {
return vxlan_id_;
}
void RoutingInstance::ClearFamilyRouteTarget(Address::Family vrf_family,
Address::Family vpn_family) {
BgpTable *table = GetTable(vrf_family);
if (table) {
RoutePathReplicator *replicator = server_->replicator(vpn_family);
BOOST_FOREACH(RouteTarget rt, import_) {
replicator->Leave(table, rt, true);
}
BOOST_FOREACH(RouteTarget rt, export_) {
replicator->Leave(table, rt, false);
}
}
}
void RoutingInstance::AddRTargetRoute(uint32_t asn,
const RouteTarget &rtarget) {
CHECK_CONCURRENCY("bgp::Config");
if (asn == 0 || !always_subscribe_)
return;
RTargetPrefix prefix(asn, rtarget);
RTargetRoute rt_key(prefix);
RoutingInstance *master =
mgr_->GetRoutingInstance(BgpConfigManager::kMasterInstance);
BgpTable *table = master->GetTable(Address::RTARGET);
DBTablePartition *tbl_partition =
static_cast<DBTablePartition *>(table->GetTablePartition(0));
RTargetRoute *route =
static_cast<RTargetRoute *>(tbl_partition->Find(&rt_key));
if (!route) {
route = new RTargetRoute(prefix);
tbl_partition->Add(route);
} else {
route->ClearDelete();
}
if (route->FindPath(BgpPath::Local, index_))
return;
BgpAttrSpec attr_spec;
BgpAttrNextHop nexthop(server_->bgp_identifier());
attr_spec.push_back(&nexthop);
BgpAttrOrigin origin(BgpAttrOrigin::IGP);
attr_spec.push_back(&origin);
BgpAttrPtr attr = server_->attr_db()->Locate(attr_spec);
BgpPath *path = new BgpPath(index_, BgpPath::Local, attr);
route->InsertPath(path);
tbl_partition->Notify(route);
BGP_LOG_ROUTE(table, static_cast<IPeer *>(NULL),
route, "Insert Local path with path id " << index_);
}
void RoutingInstance::DeleteRTargetRoute(as4_t asn,
const RouteTarget &rtarget) {
CHECK_CONCURRENCY("bgp::Config");
if (asn == 0)
return;
RTargetPrefix prefix(asn, rtarget);
RTargetRoute rt_key(prefix);
RoutingInstance *master =
mgr_->GetRoutingInstance(BgpConfigManager::kMasterInstance);
BgpTable *table = master->GetTable(Address::RTARGET);
DBTablePartition *tbl_partition =
static_cast<DBTablePartition *>(table->GetTablePartition(0));
RTargetRoute *route =
static_cast<RTargetRoute *>(tbl_partition->Find(&rt_key));
if (!route || !route->RemovePath(BgpPath::Local, index_))
return;
BGP_LOG_ROUTE(table, static_cast<IPeer *>(NULL),
route, "Delete Local path with path id " << index_);
if (!route->BestPath()) {
tbl_partition->Delete(route);
} else {
tbl_partition->Notify(route);
}
}
void RoutingInstance::InitAllRTargetRoutes(as4_t asn) {
BOOST_FOREACH(RouteTarget rtarget, import_) {
AddRTargetRoute(asn, rtarget);
}
}
void RoutingInstance::FlushAllRTargetRoutes(as4_t asn) {
BOOST_FOREACH(RouteTarget rtarget, import_) {
DeleteRTargetRoute(asn, rtarget);
}
}
void RoutingInstance::AddRouteTarget(bool import,
vector<string> *change_list, RouteTargetList::const_iterator it) {
BgpTable *ermvpn_table = GetTable(Address::ERMVPN);
RoutePathReplicator *ermvpn_replicator =
server_->replicator(Address::ERMVPN);
BgpTable *evpn_table = GetTable(Address::EVPN);
RoutePathReplicator *evpn_replicator =
server_->replicator(Address::EVPN);
BgpTable *inet_table = GetTable(Address::INET);
RoutePathReplicator *inetvpn_replicator =
server_->replicator(Address::INETVPN);
BgpTable *inet6_table = GetTable(Address::INET6);
RoutePathReplicator *inet6vpn_replicator =
server_->replicator(Address::INET6VPN);
change_list->push_back(it->ToString());
if (import) {
import_.insert(*it);
AddRTargetRoute(server_->local_autonomous_system(), *it);
} else {
export_.insert(*it);
}
ermvpn_replicator->Join(ermvpn_table, *it, import);
evpn_replicator->Join(evpn_table, *it, import);
inetvpn_replicator->Join(inet_table, *it, import);
inet6vpn_replicator->Join(inet6_table, *it, import);
}
void RoutingInstance::DeleteRouteTarget(bool import,
vector<string> *change_list, RouteTargetList::iterator it) {
BgpTable *ermvpn_table = GetTable(Address::ERMVPN);
RoutePathReplicator *ermvpn_replicator =
server_->replicator(Address::ERMVPN);
BgpTable *evpn_table = GetTable(Address::EVPN);
RoutePathReplicator *evpn_replicator =
server_->replicator(Address::EVPN);
BgpTable *inet_table = GetTable(Address::INET);
RoutePathReplicator *inetvpn_replicator =