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vn.cc
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vn.cc
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/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
#include <algorithm>
#include <boost/uuid/uuid_io.hpp>
#include <cmn/agent_cmn.h>
#include <base/parse_object.h>
#include <base/util.h>
#include <ifmap/ifmap_link.h>
#include <ifmap/ifmap_table.h>
#include <vnc_cfg_types.h>
#include <agent_types.h>
#include <cfg/cfg_init.h>
#include <cfg/cfg_interface.h>
#include <cfg/cfg_mirror.h>
#include <cfg/cfg_listener.h>
#include <oper/route_common.h>
#include <oper/interface_common.h>
#include <oper/vn.h>
#include <oper/nexthop.h>
#include <oper/mpls.h>
#include <oper/mirror_table.h>
#include <oper/agent_sandesh.h>
#include <oper/oper_dhcp_options.h>
#include <oper/physical_device_vn.h>
#include <oper/global_vrouter.h>
#include <oper/agent_route_resync.h>
#include <filter/acl.h>
#include "net/address_util.h"
using namespace autogen;
using namespace std;
using namespace boost;
using boost::assign::map_list_of;
using boost::assign::list_of;
VnTable *VnTable::vn_table_;
VnIpam::VnIpam(const std::string& ip, uint32_t len, const std::string& gw,
const std::string& dns, bool dhcp, std::string &name,
const std::vector<autogen::DhcpOptionType> &dhcp_options,
const std::vector<autogen::RouteType> &host_routes)
: plen(len), installed(false), dhcp_enable(dhcp), ipam_name(name) {
boost::system::error_code ec;
ip_prefix = IpAddress::from_string(ip, ec);
default_gw = IpAddress::from_string(gw, ec);
dns_server = IpAddress::from_string(dns, ec);
oper_dhcp_options.set_options(dhcp_options);
oper_dhcp_options.set_host_routes(host_routes);
}
Ip4Address VnIpam::GetBroadcastAddress() const {
if (ip_prefix.is_v4()) {
Ip4Address broadcast(ip_prefix.to_v4().to_ulong() |
~(0xFFFFFFFF << (32 - plen)));
return broadcast;
}
return Ip4Address(0);
}
Ip4Address VnIpam::GetSubnetAddress() const {
if (ip_prefix.is_v4()) {
return Address::GetIp4SubnetAddress(ip_prefix.to_v4(), plen);
}
return Ip4Address(0);
}
Ip6Address VnIpam::GetV6SubnetAddress() const {
if (ip_prefix.is_v6()) {
return Address::GetIp6SubnetAddress(ip_prefix.to_v6(), plen);
}
return Ip6Address();
}
bool VnIpam::IsSubnetMember(const IpAddress &ip) const {
if (ip_prefix.is_v4() && ip.is_v4()) {
return ((ip_prefix.to_v4().to_ulong() |
~(0xFFFFFFFF << (32 - plen))) ==
(ip.to_v4().to_ulong() | ~(0xFFFFFFFF << (32 - plen))));
} else if (ip_prefix.is_v6() && ip.is_v6()) {
return IsIp6SubnetMember(ip.to_v6(), ip_prefix.to_v6(), plen);
}
return false;
}
VnEntry::VnEntry(Agent *agent, uuid id) :
AgentOperDBEntry(), agent_(agent), uuid_(id), vxlan_id_(0), vnid_(0),
bridging_(true), layer3_forwarding_(true), admin_state_(true),
table_label_(0), enable_rpf_(true), flood_unknown_unicast_(false),
old_vxlan_id_(0), forwarding_mode_(Agent::L2_L3),
route_resync_walker_(new AgentRouteResync(agent)) {
route_resync_walker_.get()->
set_walkable_route_tables((1 << Agent::INET4_UNICAST) |
(1 << Agent::INET6_UNICAST));
}
VnEntry::~VnEntry() {
}
bool VnEntry::IsLess(const DBEntry &rhs) const {
const VnEntry &a = static_cast<const VnEntry &>(rhs);
return (uuid_ < a.uuid_);
}
string VnEntry::ToString() const {
std::stringstream uuidstring;
uuidstring << uuid_;
return uuidstring.str();
}
DBEntryBase::KeyPtr VnEntry::GetDBRequestKey() const {
VnKey *key = new VnKey(uuid_);
return DBEntryBase::KeyPtr(key);
}
void VnEntry::SetKey(const DBRequestKey *key) {
const VnKey *k = static_cast<const VnKey *>(key);
uuid_ = k->uuid_;
}
AgentDBTable *VnEntry::DBToTable() const {
return VnTable::GetInstance();
}
bool VnEntry::GetVnHostRoutes(const std::string &ipam,
std::vector<OperDhcpOptions::HostRoute> *routes) const {
VnData::VnIpamDataMap::const_iterator it = vn_ipam_data_.find(ipam);
if (it != vn_ipam_data_.end()) {
*routes = it->second.oper_dhcp_options_.host_routes();
return true;
}
return false;
}
bool VnEntry::GetIpamName(const IpAddress &vm_addr,
std::string *ipam_name) const {
for (unsigned int i = 0; i < ipam_.size(); i++) {
if (ipam_[i].IsSubnetMember(vm_addr)) {
*ipam_name = ipam_[i].ipam_name;
return true;
}
}
return false;
}
bool VnEntry::GetIpamData(const IpAddress &vm_addr,
std::string *ipam_name,
autogen::IpamType *ipam) const {
if (!GetIpamName(vm_addr, ipam_name) ||
!agent_->domain_config_table()->GetIpam(*ipam_name, ipam))
return false;
return true;
}
const VnIpam *VnEntry::GetIpam(const IpAddress &ip) const {
for (unsigned int i = 0; i < ipam_.size(); i++) {
if (ipam_[i].IsSubnetMember(ip)) {
return &ipam_[i];
}
}
return NULL;
}
bool VnEntry::GetIpamVdnsData(const IpAddress &vm_addr,
autogen::IpamType *ipam_type,
autogen::VirtualDnsType *vdns_type) const {
std::string ipam_name;
if (!GetIpamName(vm_addr, &ipam_name) ||
!agent_->domain_config_table()->GetIpam(ipam_name, ipam_type) ||
ipam_type->ipam_dns_method != "virtual-dns-server")
return false;
if (!agent_->domain_config_table()->GetVDns(
ipam_type->ipam_dns_server.virtual_dns_server_name, vdns_type))
return false;
return true;
}
bool VnEntry::GetPrefix(const Ip6Address &ip, Ip6Address *prefix,
uint8_t *plen) const {
for (uint32_t i = 0; i < ipam_.size(); ++i) {
if (!ipam_[i].IsV6()) {
continue;
}
if (IsIp6SubnetMember(ip, ipam_[i].ip_prefix.to_v6(),
ipam_[i].plen)) {
*prefix = ipam_[i].ip_prefix.to_v6();
*plen = (uint8_t)ipam_[i].plen;
return true;
}
}
return false;
}
std::string VnEntry::GetProject() const {
// TODO: update to get the project name from project-vn link.
// Currently, this info doesnt come to the agent
std::string name(name_.c_str());
char *saveptr;
if (strtok_r(const_cast<char *>(name.c_str()), ":", &saveptr) == NULL)
return "";
char *project = strtok_r(NULL, ":", &saveptr);
return (project == NULL) ? "" : std::string(project);
}
int VnEntry::GetVxLanId() const {
if (agent_->vxlan_network_identifier_mode() == Agent::CONFIGURED) {
return vxlan_id_;
} else {
return vnid_;
}
}
int VnEntry::ComputeEthernetTag() const {
if (TunnelType::ComputeType(TunnelType::AllType()) != TunnelType::VXLAN) {
return 0;
}
return GetVxLanId();
}
bool VnEntry::Resync() {
VnTable *table = static_cast<VnTable *>(get_table());
bool ret = false;
//Evaluate rebake of vxlan
ret |= table->RebakeVxlan(this, false);
//Evaluate forwarding mode change
ret |= table->EvaluateForwardingMode(this);
return ret;
}
void VnEntry::ResyncRoutes() {
if (vrf_.get() == NULL)
return;
route_resync_walker_.get()->UpdateRoutesInVrf(vrf_.get());
}
bool VnTable::GetLayer3ForwardingConfig
(Agent::ForwardingMode forwarding_mode) const {
if (forwarding_mode == Agent::L2) {
return false;
}
return true;
}
bool VnTable::GetBridgingConfig(Agent::ForwardingMode forwarding_mode) const {
if (forwarding_mode == Agent::L3) {
return false;
}
return true;
}
bool VnTable::EvaluateForwardingMode(VnEntry *vn) {
bool ret = false;
Agent::ForwardingMode forwarding_mode = vn->forwarding_mode();
//Evaluate only if VN does not have specific forwarding mode change.
if (forwarding_mode == Agent::NONE) {
Agent::ForwardingMode global_forwarding_mode =
agent()->oper_db()->global_vrouter()->forwarding_mode();
bool layer3_forwarding =
GetLayer3ForwardingConfig(global_forwarding_mode);
if (layer3_forwarding != vn->layer3_forwarding()) {
vn->set_layer3_forwarding(layer3_forwarding);
ret |= true;
}
bool bridging = GetBridgingConfig(global_forwarding_mode);
if (bridging != vn->bridging()) {
vn->set_bridging(bridging);
ret |= true;
}
//Evaluate IPAMs
if (!vn->layer3_forwarding()) {
DeleteAllIpamRoutes(vn);
} else {
AddAllIpamRoutes(vn);
}
}
return ret;
}
// Rebake handles
// - vxlan-id change :
// Deletes the config-entry for old-vxlan and adds config-entry for new-vxlan
// Might result in change of vxlan_id_ref_ for the VN
//
// If vxlan_id is 0, or vrf is NULL, its treated as delete of config-entry
// - Delete
// Deletes the vxlan-config entry. Will reset the vxlan-id-ref to NULL
bool VnTable::RebakeVxlan(VnEntry *vn, bool op_del) {
VxLanId *old_vxlan = vn->vxlan_id_ref_.get();
uint32_t vxlan = 0;
// Get vxlan if op is not DELETE and VRF is not NULL
if (op_del == false && vn->vrf_.get() != NULL)
vxlan = vn->GetVxLanId();
// Delete config-entry if there is change in vxlan
VxLanTable *table = agent()->vxlan_table();
if (vxlan != vn->old_vxlan_id_) {
if (vn->old_vxlan_id_) {
table->Delete(vn->old_vxlan_id_, vn->uuid_);
vn->vxlan_id_ref_ = NULL;
}
}
// Add new config-entry
if (vxlan) {
vn->old_vxlan_id_ = vxlan;
vn->vxlan_id_ref_ = table->Locate(vxlan, vn->uuid_, vn->vrf_->GetName(),
vn->flood_unknown_unicast_);
}
return (old_vxlan != vn->vxlan_id_ref_.get());
}
bool VnTable::OperDBResync(DBEntry *entry, const DBRequest *req) {
VnEntry *vn = static_cast<VnEntry *>(entry);
bool ret = vn->Resync();
return ret;
}
void VnTable::ResyncVxlan(const uuid &vn) {
DBRequest req(DBRequest::DB_ENTRY_ADD_CHANGE);
VnKey *key = new VnKey(vn);
key->sub_op_ = AgentKey::RESYNC;
req.key.reset(key);
req.data.reset(NULL);
Enqueue(&req);
}
bool VnTable::VnEntryWalk(DBTablePartBase *partition, DBEntryBase *entry) {
VnEntry *vn_entry = static_cast<VnEntry *>(entry);
if (vn_entry->GetVrf()) {
VnKey *key = new VnKey(vn_entry->GetUuid());
key->sub_op_ = AgentKey::RESYNC;
DBRequest req;
req.oper = DBRequest::DB_ENTRY_ADD_CHANGE;
req.key.reset(key);
req.data.reset(NULL);
Enqueue(&req);
}
return true;
}
void VnTable::VnEntryWalkDone(DBTableBase *partition) {
walkid_ = DBTableWalker::kInvalidWalkerId;
agent()->interface_table()->GlobalVrouterConfigChanged();
agent()->physical_device_vn_table()->
UpdateVxLanNetworkIdentifierMode();
}
void VnTable::GlobalVrouterConfigChanged() {
DBTableWalker *walker = agent()->db()->GetWalker();
if (walkid_ != DBTableWalker::kInvalidWalkerId) {
walker->WalkCancel(walkid_);
}
walkid_ = walker->WalkTable(VnTable::GetInstance(), NULL,
boost::bind(&VnTable::VnEntryWalk,
this, _1, _2),
boost::bind(&VnTable::VnEntryWalkDone, this, _1));
}
std::auto_ptr<DBEntry> VnTable::AllocEntry(const DBRequestKey *k) const {
const VnKey *key = static_cast<const VnKey *>(k);
VnEntry *vn = new VnEntry(agent(), key->uuid_);
return std::auto_ptr<DBEntry>(static_cast<DBEntry *>(vn));
}
DBEntry *VnTable::OperDBAdd(const DBRequest *req) {
VnKey *key = static_cast<VnKey *>(req->key.get());
VnData *data = static_cast<VnData *>(req->data.get());
VnEntry *vn = new VnEntry(agent(), key->uuid_);
vn->name_ = data->name_;
ChangeHandler(vn, req);
vn->SendObjectLog(AgentLogEvent::ADD);
return vn;
}
bool VnTable::OperDBOnChange(DBEntry *entry, const DBRequest *req) {
bool ret = ChangeHandler(entry, req);
VnEntry *vn = static_cast<VnEntry *>(entry);
vn->SendObjectLog(AgentLogEvent::CHANGE);
return ret;
}
bool VnTable::ForwardingModeChangeHandler(bool old_layer3_forwarding,
bool old_bridging,
bool *resync_routes,
VnData *data,
VnEntry *vn)
{
bool ret = false;
if (vn->layer3_forwarding_ != data->layer3_forwarding_) {
vn->layer3_forwarding_ = data->layer3_forwarding_;
*resync_routes = true;
ret = true;
}
if (vn->bridging_ != data->bridging_) {
vn->bridging_ = data->bridging_;
*resync_routes = true;
ret = true;
}
if (vn->layer3_forwarding_ && old_layer3_forwarding) {
//Evaluate IPAM change only if there is no change in
//layer3_forwarding.
if (IpamChangeNotify(vn->ipam_, data->ipam_, vn)) {
vn->ipam_ = data->ipam_;
ret = true;
}
} else {
if (vn->layer3_forwarding_) {
//layer3_forwarding has been enabled.
//Add all new ipam routes.
vn->ipam_ = data->ipam_;
if (!old_layer3_forwarding) {
AddAllIpamRoutes(vn);
ret = true;
}
} else {
//layer3_forwarding has been disabled.
//Delete all new ipam routes.
if (old_layer3_forwarding) {
DeleteAllIpamRoutes(vn);
ret = true;
}
vn->ipam_ = data->ipam_;
}
}
return ret;
}
bool VnTable::ChangeHandler(DBEntry *entry, const DBRequest *req) {
bool ret = false;
VnEntry *vn = static_cast<VnEntry *>(entry);
VnData *data = static_cast<VnData *>(req->data.get());
VrfEntry *old_vrf = vn->vrf_.get();
bool old_layer3_forwarding = vn->layer3_forwarding_;
bool old_bridging = vn->bridging_;
bool rebake_vxlan = false;
bool resync_routes = false;
AclKey key(data->acl_id_);
AclDBEntry *acl = static_cast<AclDBEntry *>
(agent()->acl_table()->FindActiveEntry(&key));
if (vn->acl_.get() != acl) {
vn->acl_ = acl;
ret = true;
}
AclKey mirror_key(data->mirror_acl_id_);
AclDBEntry *mirror_acl = static_cast<AclDBEntry *>
(agent()->acl_table()->FindActiveEntry(&mirror_key));
if (vn->mirror_acl_.get() != mirror_acl) {
vn->mirror_acl_ = mirror_acl;
ret = true;
}
AclKey mirror_cfg_acl_key(data->mirror_cfg_acl_id_);
AclDBEntry *mirror_cfg_acl = static_cast<AclDBEntry *>
(agent()->acl_table()->FindActiveEntry(&mirror_cfg_acl_key));
if (vn->mirror_cfg_acl_.get() != mirror_cfg_acl) {
vn->mirror_cfg_acl_ = mirror_cfg_acl;
ret = true;
}
VrfKey vrf_key(data->vrf_name_);
VrfEntry *vrf = static_cast<VrfEntry *>
(agent()->vrf_table()->FindActiveEntry(&vrf_key));
if (vrf != old_vrf) {
if (!vrf) {
DeleteAllIpamRoutes(vn);
}
vn->vrf_ = vrf;
rebake_vxlan = true;
ret = true;
}
if (vn->admin_state_ != data->admin_state_) {
vn->admin_state_ = data->admin_state_;
ret = true;
}
ret |= ForwardingModeChangeHandler(old_layer3_forwarding,
old_bridging,
&resync_routes,
data,
vn);
if (vn->vn_ipam_data_ != data->vn_ipam_data_) {
vn->vn_ipam_data_ = data->vn_ipam_data_;
ret = true;
}
if (vn->enable_rpf_ != data->enable_rpf_) {
vn->enable_rpf_ = data->enable_rpf_;
ret = true;
}
if (vn->vxlan_id_ != data->vxlan_id_) {
vn->vxlan_id_ = data->vxlan_id_;
ret = true;
if (agent()->vxlan_network_identifier_mode() == Agent::CONFIGURED) {
rebake_vxlan = true;
}
}
if (vn->vnid_ != data->vnid_) {
vn->vnid_ = data->vnid_;
ret = true;
if (agent()->vxlan_network_identifier_mode() == Agent::AUTOMATIC) {
rebake_vxlan = true;
}
}
if (vn->flood_unknown_unicast_ != data->flood_unknown_unicast_) {
vn->flood_unknown_unicast_ = data->flood_unknown_unicast_;
rebake_vxlan = true;
ret = true;
}
if (vn->forwarding_mode_ != data->forwarding_mode_) {
vn->forwarding_mode_ = data->forwarding_mode_;
ret = true;
}
if (rebake_vxlan) {
ret |= RebakeVxlan(vn, false);
}
if (resync_routes) {
vn->ResyncRoutes();
}
return ret;
}
bool VnTable::OperDBDelete(DBEntry *entry, const DBRequest *req) {
VnEntry *vn = static_cast<VnEntry *>(entry);
DeleteAllIpamRoutes(vn);
RebakeVxlan(vn, true);
vn->SendObjectLog(AgentLogEvent::DELETE);
return true;
}
VnEntry *VnTable::Find(const boost::uuids::uuid &u) {
VnKey key(u);
return static_cast<VnEntry *>(FindActiveEntry(&key));
}
DBTableBase *VnTable::CreateTable(DB *db, const std::string &name) {
vn_table_ = new VnTable(db, name);
vn_table_->Init();
return vn_table_;
};
void VnTable::RegisterDBClients(IFMapDependencyManager *dep) {
typedef IFMapDependencyTracker::PropagateList PropagateList;
typedef IFMapDependencyTracker::ReactionMap ReactionMap;
ReactionMap react_vn = map_list_of<string, PropagateList>
(("self"),
list_of("virtual-network-virtual-machine-interface")
("virtual-machine-interface-virtual-network"))
("virtual-network-network-ipam",
list_of("virtual-machine-interface-virtual-network"));
dep->RegisterReactionMap("virtual-network", react_vn);
dep->Register("virtual-network",
boost::bind(&AgentOperDBTable::ConfigEventHandler, this, _1));
}
/*
* IsVRFServiceChainingInstance
* Helper function to identify the service chain vrf.
* In VN-VRF mapping config can send multiple VRF for same VN.
* Since assumption had been made that VN to VRF is always 1:1 this
* situation needs to be handled.
* This is a temporary solution in which all VRF other than primary VRF
* is ignored.
* Example:
* VN name: domain:vn1
* VRF 1: domain:vn1:vn1 ----> Primary
* VRF 2: domain:vn1:service-vn1_vn2 ----> Second vrf linked to vn1
* Break the VN and VRF name into tokens based on ':'
* So in primary vrf last and second-last token will be same and will be
* equal to last token of VN name. Keep this VRF.
* The second VRF last and second-last token are not same so it will be ignored.
*
*/
bool IsVRFServiceChainingInstance(const string &vn_name, const string &vrf_name)
{
vector<string> vn_token_result;
vector<string> vrf_token_result;
uint32_t vrf_token_result_size = 0;
split(vn_token_result, vn_name, is_any_of(":"), token_compress_on);
split(vrf_token_result, vrf_name, is_any_of(":"), token_compress_on);
vrf_token_result_size = vrf_token_result.size();
/*
* This check is to handle test cases where vrf and vn name
* are single word without discriminator ':'
* e.g. vrf1 or vn1. In these cases we dont ignore and use
* the VRF
*/
if (vrf_token_result_size == 1) {
return false;
}
if ((vrf_token_result.at(vrf_token_result_size - 1) ==
vrf_token_result.at(vrf_token_result_size - 2)) &&
(vn_token_result.at(vn_token_result.size() - 1) ==
vrf_token_result.at(vrf_token_result_size - 1))) {
return false;
}
return true;
}
IFMapNode *VnTable::FindTarget(IFMapAgentTable *table, IFMapNode *node,
std::string node_type) {
for (DBGraphVertex::adjacency_iterator it = node->begin(table->GetGraph());
it != node->end(table->GetGraph()); ++it) {
IFMapNode *adj_node = static_cast<IFMapNode *>(it.operator->());
if (adj_node->table()->Typename() == node_type)
return adj_node;
}
return NULL;
}
VnData *VnTable::BuildData(IFMapNode *node) {
VirtualNetwork *cfg = static_cast <VirtualNetwork *> (node->GetObject());
assert(cfg);
uuid acl_uuid = nil_uuid();
uuid mirror_cfg_acl_uuid = nil_uuid();
string vrf_name = "";
std::vector<VnIpam> vn_ipam;
VnData::VnIpamDataMap vn_ipam_data;
std::string ipam_name;
// Find link with ACL / VRF adjacency
IFMapAgentTable *table = static_cast<IFMapAgentTable *>(node->table());
DBGraph *graph = table->GetGraph();
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(table->GetGraph()); ++iter) {
IFMapNode *adj_node = static_cast<IFMapNode *>(iter.operator->());
if (agent()->cfg_listener()->SkipNode(adj_node)) {
continue;
}
if (adj_node->table() == agent()->cfg()->cfg_acl_table()) {
AccessControlList *acl_cfg = static_cast<AccessControlList *>
(adj_node->GetObject());
assert(acl_cfg);
autogen::IdPermsType id_perms = acl_cfg->id_perms();
if (acl_cfg->entries().dynamic) {
CfgUuidSet(id_perms.uuid.uuid_mslong, id_perms.uuid.uuid_lslong,
mirror_cfg_acl_uuid);
} else {
CfgUuidSet(id_perms.uuid.uuid_mslong, id_perms.uuid.uuid_lslong,
acl_uuid);
}
}
if ((adj_node->table() == agent()->cfg()->cfg_vrf_table()) &&
(!IsVRFServiceChainingInstance(node->name(), adj_node->name()))) {
vrf_name = adj_node->name();
}
if (adj_node->table() == agent()->cfg()->cfg_vn_network_ipam_table()) {
if (IFMapNode *ipam_node = FindTarget(table, adj_node,
"network-ipam")) {
ipam_name = ipam_node->name();
VirtualNetworkNetworkIpam *ipam =
static_cast<VirtualNetworkNetworkIpam *>
(adj_node->GetObject());
assert(ipam);
const VnSubnetsType &subnets = ipam->data();
for (unsigned int i = 0; i < subnets.ipam_subnets.size(); ++i) {
// if the DNS server address is not specified, set this
// to be the same as the GW address
std::string dns_server_address =
subnets.ipam_subnets[i].dns_server_address;
boost::system::error_code ec;
IpAddress dns_server =
IpAddress::from_string(dns_server_address, ec);
if (ec.value() || dns_server.is_unspecified()) {
dns_server_address =
subnets.ipam_subnets[i].default_gateway;
}
vn_ipam.push_back
(VnIpam(subnets.ipam_subnets[i].subnet.ip_prefix,
subnets.ipam_subnets[i].subnet.ip_prefix_len,
subnets.ipam_subnets[i].default_gateway,
dns_server_address,
subnets.ipam_subnets[i].enable_dhcp, ipam_name,
subnets.ipam_subnets[i].dhcp_option_list.dhcp_option,
subnets.ipam_subnets[i].host_routes.route));
}
VnIpamLinkData ipam_data;
ipam_data.oper_dhcp_options_.set_host_routes(subnets.host_routes.route);
vn_ipam_data.insert(VnData::VnIpamDataPair(ipam_name, ipam_data));
}
}
}
uuid mirror_acl_uuid = agent()->mirror_cfg_table()->GetMirrorUuid(node->name());
std::sort(vn_ipam.begin(), vn_ipam.end());
// Fetch VN Properties
bool enable_rpf = true;
if (cfg->properties().rpf == "disable") {
enable_rpf = false;
}
autogen::VirtualNetworkType properties = cfg->properties();
//dervived forwarding mode is resultant of configured VN forwarding and global
//configure forwarding mode. It is then used to setup the VN forwarding
//mode.
//In derivation, global configured forwarding mode is consulted only if VN
//configured f/wing mode is not set.
Agent::ForwardingMode forwarding_mode =
agent()->TranslateForwardingMode(properties.forwarding_mode);
Agent::ForwardingMode derived_forwarding_mode = forwarding_mode;
if (derived_forwarding_mode == Agent::NONE) {
//Use global configured forwarding mode.
derived_forwarding_mode = agent()->oper_db()->global_vrouter()->
forwarding_mode();
}
//Set the forwarding mode in VN based on calculation above.
//By default assume both bridging and layer3_forwarding is enabled.
//Flap the mode if configured forwarding mode is not "l2_l3" i.e. l2 or l3.
bool bridging = GetBridgingConfig(derived_forwarding_mode);
bool layer3_forwarding = GetLayer3ForwardingConfig(derived_forwarding_mode);
int network_id;
if (cfg->IsPropertySet(autogen::VirtualNetwork::NETWORK_ID))
network_id = cfg->network_id();
else
network_id = cfg->properties().network_id;
bool flood_unknown_unicast = cfg->flood_unknown_unicast();
return new VnData(agent(), node->name(), acl_uuid, vrf_name, mirror_acl_uuid,
mirror_cfg_acl_uuid, vn_ipam, vn_ipam_data,
cfg->properties().vxlan_network_identifier,
network_id, bridging, layer3_forwarding,
cfg->id_perms().enable, enable_rpf, flood_unknown_unicast,
forwarding_mode);
}
// Change to ACL referernce can result in change of Policy flag
// on interfaces. Find all interfaces on this VN and RESYNC them.
// This is also required to check changes to admin_state and to
// the enable_dhcp flag in the VN subnets (VN Ipam).
// TODO: Check if there is change in VRF
void VnTable::ResyncVmInterface(IFMapNode *node) {
IFMapAgentTable *table = static_cast<IFMapAgentTable *>(node->table());
DBGraph *graph = table->GetGraph();
DBRequest req(DBRequest::DB_ENTRY_ADD_CHANGE);
// Find link with VM-Port adjacency
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj_node = static_cast<IFMapNode *>(iter.operator->());
if (agent()->cfg_listener()->SkipNode
(adj_node, agent()->cfg()->cfg_vm_interface_table())) {
continue;
}
if (adj_node->GetObject() == NULL) {
continue;
}
if (agent()->interface_table()->IFNodeToReq(adj_node, req)) {
agent()->interface_table()->Enqueue(&req);
}
}
}
bool VnTable::IFNodeToUuid(IFMapNode *node, boost::uuids::uuid &u) {
VirtualNetwork *cfg = static_cast <VirtualNetwork *> (node->GetObject());
assert(cfg);
autogen::IdPermsType id_perms = cfg->id_perms();
CfgUuidSet(id_perms.uuid.uuid_mslong, id_perms.uuid.uuid_lslong, u);
return true;
}
bool VnTable::IFLinkToReq(IFMapLink *link, IFMapNode *node,
const string &peer_type, IFMapNode *peer,
DBRequest &req) {
// Add/Delete of link other than VMInterface will most likely need re-eval
// of VN.
if (peer_type != "virtual-machine-interface") {
VirtualNetwork *cfg = static_cast <VirtualNetwork *>(node->GetObject());
assert(cfg);
boost::uuids::uuid u;
agent()->cfg_listener()->GetCfgDBStateUuid(node, u);
req.key.reset(new VnKey(u));
req.data.reset(BuildData(node));
Enqueue(&req);
}
// If peer is VMI, invoke re-eval if peer node is present
if (peer && peer->table() == agent()->cfg()->cfg_vm_interface_table()) {
DBRequest vmi_req;
if (agent()->interface_table()->IFNodeToReq(peer, vmi_req) == true) {
LOG(DEBUG, "VN change sync for Port " << peer->name());
agent()->interface_table()->Enqueue(&vmi_req);
}
return false;
}
// Any change to ACL/IPAM will need re-eval of all VMInterface on this VN
if (peer_type == "virtual-network-network-ipam" ||
peer_type == "access-control-list") {
ResyncVmInterface(node);
return false;
}
// If peer is known and is floating-ip pool, propogate change to it
if (peer && peer->table() == agent()->cfg()->cfg_floatingip_pool_table()) {
VmInterface::FloatingIpPoolSync(agent()->interface_table(), peer);
return false;
}
return false;
}
bool VnTable::IFNodeToReq(IFMapNode *node, DBRequest &req) {
VirtualNetwork *cfg = static_cast <VirtualNetwork *> (node->GetObject());
assert(cfg);
autogen::IdPermsType id_perms = cfg->id_perms();
boost::uuids::uuid u;
if (agent()->cfg_listener()->GetCfgDBStateUuid(node, u) == false)
return false;
req.key.reset(new VnKey(u));
VnData *data = NULL;
if (node->IsDeleted()) {
req.oper = DBRequest::DB_ENTRY_DELETE;
} else {
req.oper = DBRequest::DB_ENTRY_ADD_CHANGE;
data = BuildData(node);
req.data.reset(data);
data->SetIFMapNode(node);
}
Enqueue(&req);
if (node->IsDeleted()) {
return false;
}
// Change to ACL referernce can result in change of Policy flag
// on interfaces. Find all interfaces on this VN and RESYNC them.
// This is also required to check changes to admin_state and to
// the enable_dhcp flag in the VN subnets (VN Ipam).
// TODO: Check if there is change in VRF
req.oper = DBRequest::DB_ENTRY_ADD_CHANGE;
// Find link with VM-Port adjacency
IFMapAgentTable *table = static_cast<IFMapAgentTable *>(node->table());
for (DBGraphVertex::adjacency_iterator iter =
node->begin(table->GetGraph());
iter != node->end(table->GetGraph()); ++iter) {
IFMapNode *adj_node = static_cast<IFMapNode *>(iter.operator->());
if (agent()->cfg_listener()->SkipNode
(adj_node, agent()->cfg()->cfg_vm_interface_table())) {
continue;
}
if (adj_node->GetObject() == NULL) {
continue;
}
if (agent()->interface_table()->IFNodeToReq(adj_node, req)) {
agent()->interface_table()->Enqueue(&req);
}
}
// Trigger Floating-IP resync
VmInterface::FloatingIpVnSync(agent()->interface_table(), node);
VmInterface::VnSync(agent()->interface_table(), node);
return false;
}
void VnTable::AddVn(const uuid &vn_uuid, const string &name,
const uuid &acl_id, const string &vrf_name,
const std::vector<VnIpam> &ipam,
const VnData::VnIpamDataMap &vn_ipam_data, int vn_id,
int vxlan_id, bool admin_state, bool enable_rpf,
bool flood_unknown_unicast) {
DBRequest req;
VnKey *key = new VnKey(vn_uuid);
VnData *data = new VnData(agent(), name, acl_id, vrf_name, nil_uuid(),
nil_uuid(), ipam, vn_ipam_data,
vn_id, vxlan_id, true, true,
admin_state, enable_rpf,
flood_unknown_unicast, Agent::NONE);
req.oper = DBRequest::DB_ENTRY_ADD_CHANGE;
req.key.reset(key);
req.data.reset(data);
Enqueue(&req);
}
void VnTable::DelVn(const uuid &vn_uuid) {
DBRequest req;
VnKey *key = new VnKey(vn_uuid);
req.oper = DBRequest::DB_ENTRY_DELETE;
req.key.reset(key);
req.data.reset(NULL);
Enqueue(&req);
}
void VnTable::IpamVnSync(IFMapNode *node) {
if (node->IsDeleted()) {
return;
}
IFMapAgentTable *table = static_cast<IFMapAgentTable *> (node->table());
DBGraph *graph = table->GetGraph();
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj_node = static_cast<IFMapNode *>(iter.operator->());
if (Agent::GetInstance()->cfg_listener()->SkipNode
(adj_node, Agent::GetInstance()->cfg()->cfg_vn_table())) {
continue;
}
DBRequest req;
req.oper = DBRequest::DB_ENTRY_ADD_CHANGE;
Agent::GetInstance()->vn_table()->IFNodeToReq(adj_node, req);
}
return;
}
void VnTable::UpdateHostRoute(const IpAddress &old_address,
const IpAddress &new_address,
VnEntry *vn) {
VrfEntry *vrf = vn->GetVrf();
if (vrf && (vrf->GetName() != agent()->linklocal_vrf_name())) {
AddHostRoute(vn, new_address);
DelHostRoute(vn, old_address);
}
}
// Check the old and new Ipam data and update receive routes for GW addresses
bool VnTable::IpamChangeNotify(std::vector<VnIpam> &old_ipam,
std::vector<VnIpam> &new_ipam,
VnEntry *vn) {
bool change = false;
std::sort(old_ipam.begin(), old_ipam.end());
std::sort(new_ipam.begin(), new_ipam.end());
std::vector<VnIpam>::iterator it_old = old_ipam.begin();
std::vector<VnIpam>::iterator it_new = new_ipam.begin();
while (it_old != old_ipam.end() && it_new != new_ipam.end()) {
if (*it_old < *it_new) {
// old entry is deleted
DelIPAMRoutes(vn, *it_old);
change = true;
it_old++;
} else if (*it_new < *it_old) {
// new entry
AddIPAMRoutes(vn, *it_new);
change = true;
it_new++;
} else {
//Evaluate non key members of IPAM for changes.
// no change in entry
bool gateway_changed = ((*it_old).default_gw !=
(*it_new).default_gw);
bool service_address_changed = ((*it_old).dns_server != (*it_new).dns_server);
if ((*it_old).installed) {
(*it_new).installed = true;
// VNIPAM comparator does not check for gateway.
// If gateway is changed then take appropriate actions.
IpAddress unspecified;
if (gateway_changed) {
if (IsGwHostRouteRequired()) {
UpdateHostRoute((*it_old).default_gw,
(*it_new).default_gw, vn);
}