/
agent_path.cc
1287 lines (1093 loc) · 39.3 KB
/
agent_path.cc
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/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
#include <boost/uuid/uuid_io.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/foreach.hpp>
#include <cmn/agent_cmn.h>
#include <route/route.h>
#include <init/agent_param.h>
#include <vnc_cfg_types.h>
#include <agent_types.h>
#include <filter/acl.h>
#include <oper/peer.h>
#include <oper/vrf.h>
#include <oper/interface_common.h>
#include <oper/nexthop.h>
#include <oper/tunnel_nh.h>
#include <oper/vn.h>
#include <oper/mirror_table.h>
#include <oper/vxlan.h>
#include <oper/mpls.h>
#include <oper/route_common.h>
#include <oper/agent_sandesh.h>
using namespace std;
using namespace boost::asio;
AgentPath::AgentPath(const Peer *peer, AgentRoute *rt):
Path(), peer_(peer), nh_(NULL), label_(MplsTable::kInvalidLabel),
vxlan_id_(VxLanTable::kInvalidvxlan_id), dest_vn_name_(""),
sync_(false), force_policy_(false), sg_list_(),
tunnel_dest_(0), tunnel_bmap_(TunnelType::AllType()),
tunnel_type_(TunnelType::ComputeType(TunnelType::AllType())),
vrf_name_(""), gw_ip_(0), unresolved_(true), is_stale_(false),
is_subnet_discard_(false), dependant_rt_(rt), path_preference_(),
local_ecmp_mpls_label_(rt), composite_nh_key_(NULL), subnet_gw_ip_(),
arp_mac_(), arp_interface_(NULL), arp_valid_(false),
ecmp_suppressed_(false) {
}
AgentPath::~AgentPath() {
clear_sg_list();
}
uint32_t AgentPath::GetTunnelBmap() const {
TunnelType::Type type = TunnelType::ComputeType(tunnel_bmap_);
if ((type == (1 << TunnelType::VXLAN)) && (vxlan_id_ != 0)) {
return (1 << TunnelType::VXLAN);
} else {
return tunnel_bmap_;
}
}
uint32_t AgentPath::GetActiveLabel() const {
if (tunnel_type_ == TunnelType::VXLAN) {
return vxlan_id_;
} else {
return label_;
}
}
NextHop* AgentPath::nexthop() const {
return nh_.get();
}
const NextHop* AgentPath::ComputeNextHop(Agent *agent) const {
if (nh_) {
return nh_.get();
}
if (unresolved_ == true) {
DiscardNH key;
return static_cast<NextHop *>
(agent->nexthop_table()->FindActiveEntry(&key));
}
//Indirect route's path, get direct route's NH
const NextHop *nh = dependant_rt_.get()->GetActiveNextHop();
if (nh == NULL) {
assert(0);
}
return nh;
}
bool AgentPath::ChangeNH(Agent *agent, NextHop *nh) {
// If NH is not found, point route to discard NH
bool ret = false;
if (nh == NULL) {
nh = agent->nexthop_table()->discard_nh();
}
if (nh_ != nh) {
nh_ = nh;
if (nh && nh->GetType() == NextHop::TUNNEL) {
TunnelNH *tunnel_nh = static_cast<TunnelNH *>(nh);
tunnel_dest_ = *tunnel_nh->GetDip();
}
ret = true;
}
if (peer_ && (peer_->GetType() == Peer::MULTICAST_PEER) &&
(label_ != MplsTable::kInvalidLabel)) {
MplsLabelKey key(MplsLabel::MCAST_NH, label_);
MplsLabel *mpls = static_cast<MplsLabel *>(agent->mpls_table()->
FindActiveEntry(&key));
if (agent->mpls_table()->ChangeNH(mpls, nh))
ret = true;
if (mpls) {
//Send notify of change
mpls->get_table_partition()->Notify(mpls);
}
}
return ret;
}
bool AgentPath::RebakeAllTunnelNHinCompositeNH(const AgentRoute *sync_route) {
if (nh_->GetType() != NextHop::COMPOSITE){
return false;
}
Agent *agent =
static_cast<AgentRouteTable *>(sync_route->get_table())->agent();
CompositeNH *cnh = static_cast<CompositeNH *>(nh_.get());
//Compute new tunnel type
TunnelType::Type new_tunnel_type;
//Only MPLS types are supported for multicast
if ((sync_route->is_multicast()) && (peer_->GetType() ==
Peer::MULTICAST_FABRIC_TREE_BUILDER)) {
new_tunnel_type = TunnelType::ComputeType(TunnelType::MplsType());
if (new_tunnel_type == TunnelType::VXLAN) {
new_tunnel_type = TunnelType::MPLS_GRE;
}
} else {
new_tunnel_type = TunnelType::ComputeType(tunnel_bmap_);
}
CompositeNH *new_composite_nh = NULL;
new_composite_nh = cnh->ChangeTunnelType(agent, new_tunnel_type);
if (ChangeNH(agent, new_composite_nh)) {
//Update composite NH key list to reflect new type
if (composite_nh_key_)
composite_nh_key_->ChangeTunnelType(new_tunnel_type);
return true;
}
return false;
}
bool AgentPath::UpdateNHPolicy(Agent *agent) {
bool ret = false;
if (nh_.get() == NULL || nh_->GetType() != NextHop::INTERFACE) {
return ret;
}
const InterfaceNH *intf_nh = static_cast<const InterfaceNH *>(nh_.get());
if (intf_nh->GetInterface()->type() != Interface::VM_INTERFACE) {
return ret;
}
const VmInterface *vm_port =
static_cast<const VmInterface *>(intf_nh->GetInterface());
bool policy = vm_port->policy_enabled();
if (force_policy_) {
policy = true;
}
NextHop *nh = NULL;
if (intf_nh->PolicyEnabled() != policy) {
//Make path point to policy enabled interface
InterfaceNHKey key(new VmInterfaceKey(AgentKey::ADD_DEL_CHANGE,
vm_port->GetUuid(), ""),
policy, intf_nh->GetFlags());
nh = static_cast<NextHop *>
(agent->nexthop_table()->FindActiveEntry(&key));
// If NH is not found, point route to discard NH
if (nh == NULL) {
LOG(DEBUG, "Interface NH for <"
<< boost::lexical_cast<std::string>(vm_port->GetUuid())
<< " : policy = " << policy);
nh = agent->nexthop_table()->discard_nh();
}
if (ChangeNH(agent, nh) == true) {
ret = true;
}
}
return ret;
}
bool AgentPath::UpdateTunnelType(Agent *agent, const AgentRoute *sync_route) {
//Return if there is no change in tunnel type for non Composite NH.
//For composite NH component needs to be traversed.
if ((tunnel_type_ == TunnelType::ComputeType(tunnel_bmap_)) &&
(nh_.get() && nh_.get()->GetType() != NextHop::COMPOSITE)) {
return false;
}
tunnel_type_ = TunnelType::ComputeType(tunnel_bmap_);
if (tunnel_type_ == TunnelType::VXLAN &&
vxlan_id_ == VxLanTable::kInvalidvxlan_id) {
tunnel_type_ = TunnelType::ComputeType(TunnelType::MplsType());
}
if (nh_.get() && nh_->GetType() == NextHop::TUNNEL) {
DBRequest nh_req(DBRequest::DB_ENTRY_ADD_CHANGE);
const TunnelNH *tunnel_nh = static_cast<const TunnelNH*>(nh_.get());
TunnelNHKey *tnh_key =
new TunnelNHKey(agent->fabric_vrf_name(), *(tunnel_nh->GetSip()),
tunnel_dest_, false, tunnel_type_);
nh_req.key.reset(tnh_key);
nh_req.data.reset(new TunnelNHData());
agent->nexthop_table()->Process(nh_req);
TunnelNHKey nh_key(agent->fabric_vrf_name(), *(tunnel_nh->GetSip()),
tunnel_dest_, false, tunnel_type_);
NextHop *nh = static_cast<NextHop *>
(agent->nexthop_table()->FindActiveEntry(&nh_key));
ChangeNH(agent, nh);
}
if (nh_.get() && nh_->GetType() == NextHop::COMPOSITE) {
RebakeAllTunnelNHinCompositeNH(sync_route);
}
return true;
}
bool AgentPath::Sync(AgentRoute *sync_route) {
bool ret = false;
bool unresolved = false;
Agent *agent = static_cast<AgentRouteTable *>
(sync_route->get_table())->agent();
// Check if there is change in policy on the interface
// If yes update the path to point to policy enabled NH
if (UpdateNHPolicy(agent)) {
ret = true;
}
//Handle tunnel type change
if (UpdateTunnelType(agent, sync_route)) {
ret = true;
}
//Check if there was a change in local ecmp composite nexthop
if (nh_ && nh_->GetType() == NextHop::COMPOSITE &&
composite_nh_key_.get() != NULL &&
local_ecmp_mpls_label_.get() != NULL) {
boost::scoped_ptr<CompositeNHKey> composite_nh_key(composite_nh_key_->Clone());
if (ReorderCompositeNH(agent, composite_nh_key.get())) {
if (ChangeCompositeNH(agent, composite_nh_key.get())) {
ret = true;
}
}
}
if (nh_ && nh_->GetType() == NextHop::ARP) {
if (CopyArpData()) {
ret = true;
}
}
if (vrf_name_ == Agent::NullString()) {
return ret;
}
InetUnicastAgentRouteTable *table = NULL;
InetUnicastRouteEntry *rt = NULL;
table = agent->vrf_table()->GetInet4UnicastRouteTable(vrf_name_);
if (table)
rt = table->FindRoute(gw_ip_);
if (rt == sync_route) {
rt = NULL;
}
if (rt == NULL || rt->plen() == 0) {
if (agent->params()->subnet_hosts_resolvable() == false &&
agent->fabric_vrf_name() == vrf_name_) {
unresolved = false;
table->AddArpReq(vrf_name_, gw_ip_, vrf_name_,
agent->vhost_interface(), false,
dest_vn_name_, sg_list_);
} else {
unresolved = true;
}
} else if (rt->GetActiveNextHop()->GetType() == NextHop::RESOLVE) {
const ResolveNH *nh =
static_cast<const ResolveNH *>(rt->GetActiveNextHop());
table->AddArpReq(vrf_name_, gw_ip_, nh->interface()->vrf()->GetName(),
nh->interface(), nh->PolicyEnabled(), dest_vn_name_,
sg_list_);
unresolved = true;
} else {
unresolved = false;
}
if (unresolved_ != unresolved) {
unresolved_ = unresolved;
ret = true;
}
// Reset to new gateway route, no nexthop for indirect route
if (dependant_rt_.get() != rt) {
dependant_rt_.reset(rt);
ret = true;
}
return ret;
}
bool AgentPath::IsLess(const AgentPath &r_path) const {
if (peer()->GetType() == r_path.peer()->GetType()) {
if (path_preference() != r_path.path_preference()) {
//If right path has lesser preference, then
//it should be after the current entry
//Hence the reverse check
return (r_path.path_preference() < path_preference());
}
}
return peer()->IsLess(r_path.peer());
}
void AgentPath::set_nexthop(NextHop *nh) {
nh_ = nh;
}
bool AgentPath::CopyArpData() {
bool ret = false;
if (nh_ && nh_->GetType() == NextHop::ARP) {
const ArpNH *arp_nh = static_cast<const ArpNH *>(nh_.get());
if (arp_mac() != arp_nh->GetMac()) {
set_arp_mac(arp_nh->GetMac());
ret = true;
}
if (arp_interface() != arp_nh->GetInterface()) {
set_arp_interface(arp_nh->GetInterface());
ret = true;
}
if (arp_valid() != arp_nh->IsValid()) {
set_arp_valid(arp_nh->IsValid());
ret = true;
}
}
return ret;
}
EvpnDerivedPath::EvpnDerivedPath(const EvpnPeer *evpn_peer,
const IpAddress &ip_addr,
uint32_t ethernet_tag,
const std::string &parent) :
AgentPath(evpn_peer, NULL),
ip_addr_(ip_addr), ethernet_tag_(ethernet_tag),
parent_(parent){
}
bool EvpnDerivedPath::IsLess(const AgentPath &r_path) const {
const EvpnDerivedPath *r_evpn_path =
dynamic_cast<const EvpnDerivedPath *>(&r_path);
if (r_evpn_path != NULL) {
if (r_evpn_path->ip_addr() != ip_addr_) {
return (ip_addr_ < r_evpn_path->ip_addr());
}
}
return peer()->IsLess(r_path.peer());
}
const NextHop *EvpnDerivedPath::ComputeNextHop(Agent *agent) const {
return nexthop();
}
EvpnDerivedPathData::EvpnDerivedPathData(const EvpnRouteEntry *evpn_rt) :
AgentRouteData(false), ethernet_tag_(evpn_rt->ethernet_tag()),
ip_addr_(evpn_rt->ip_addr()), reference_path_(evpn_rt->GetActivePath()),
ecmp_suppressed_(false) {
// For debuging add peer of active path in parent as well
std::stringstream s;
s << evpn_rt->ToString();
s << " ";
if (reference_path_ && reference_path_->peer())
s << reference_path_->peer()->GetName();
parent_ = s.str();
}
AgentPath *EvpnDerivedPathData::CreateAgentPath(const Peer *peer,
AgentRoute *rt) const {
const EvpnPeer *evpn_peer = dynamic_cast<const EvpnPeer *>(peer);
assert(evpn_peer != NULL);
return (new EvpnDerivedPath(evpn_peer, ip_addr_, ethernet_tag_,
parent_));
}
bool EvpnDerivedPathData::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
EvpnDerivedPath *evpn_path = dynamic_cast<EvpnDerivedPath *>(path);
assert(evpn_path != NULL);
evpn_path->set_tunnel_dest(reference_path_->tunnel_dest());
uint32_t label = reference_path_->label();
if (evpn_path->label() != label) {
evpn_path->set_label(label);
ret = true;
}
uint32_t vxlan_id = reference_path_->vxlan_id();
if (evpn_path->vxlan_id() != vxlan_id) {
evpn_path->set_vxlan_id(vxlan_id);
ret = true;
}
uint32_t tunnel_bmap = reference_path_->tunnel_bmap();
if (evpn_path->tunnel_bmap() != tunnel_bmap) {
evpn_path->set_tunnel_bmap(tunnel_bmap);
ret = true;
}
TunnelType::Type tunnel_type = reference_path_->tunnel_type();
if (evpn_path->tunnel_type() != tunnel_type) {
evpn_path->set_tunnel_type(tunnel_type);
ret = true;
}
PathPreference pref = reference_path_->path_preference();
if (evpn_path->path_preference() != pref) {
// Take path preference from parent path
evpn_path->set_path_preference(pref);
ret = true;
}
if (evpn_path->nexthop() !=
reference_path_->nexthop()) {
evpn_path->set_nexthop(reference_path_->nexthop());
ret = true;
}
const SecurityGroupList &sg_list = reference_path_->sg_list();
if (evpn_path->sg_list() != sg_list) {
evpn_path->set_sg_list(sg_list);
ret = true;
}
const std::string &dest_vn = reference_path_->dest_vn_name();
if (evpn_path->dest_vn_name() != dest_vn) {
evpn_path->set_dest_vn_name(dest_vn);
ret = true;
}
if (evpn_path->ecmp_suppressed() != ecmp_suppressed_) {
evpn_path->set_ecmp_suppressed(ecmp_suppressed_);
ret = true;
}
return ret;
}
bool HostRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
NextHop *nh = NULL;
InterfaceNHKey key(intf_.Clone(), false, InterfaceNHFlags::INET4);
nh = static_cast<NextHop *>(agent->nexthop_table()->FindActiveEntry(&key));
if (path->dest_vn_name() != dest_vn_name_) {
path->set_dest_vn_name(dest_vn_name_);
ret = true;
}
path->set_unresolved(false);
if (path->ChangeNH(agent, nh) == true)
ret = true;
return ret;
}
bool HostRoute::UpdateRoute(AgentRoute *rt) {
bool ret = false;
InetUnicastRouteEntry *uc_rt =
static_cast<InetUnicastRouteEntry *>(rt);
AgentRouteTable *table = static_cast<AgentRouteTable *>(rt->get_table());
if ((table->GetTableType() != Agent::INET4_UNICAST) &&
(table->GetTableType() != Agent::INET6_UNICAST))
return ret;
if (uc_rt->proxy_arp() != true) {
uc_rt->set_proxy_arp(true);
ret = true;
}
return ret;
}
bool L2ReceiveRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
path->set_unresolved(false);
if (path->dest_vn_name() != dest_vn_name_) {
path->set_dest_vn_name(dest_vn_name_);
ret = true;
}
if (path->label() != mpls_label_) {
path->set_label(mpls_label_);
ret = true;
}
if (path->vxlan_id() != vxlan_id_) {
path->set_vxlan_id(vxlan_id_);
ret = true;
}
if (path->ChangeNH(agent, agent->nexthop_table()->l2_receive_nh()) == true)
ret = true;
return ret;
}
bool InetInterfaceRoute::UpdateRoute(AgentRoute *rt) {
bool ret = false;
AgentRouteTable *table = static_cast<AgentRouteTable *>(rt->get_table());
if ((table->GetTableType() != Agent::INET4_UNICAST) &&
(table->GetTableType() != Agent::INET6_UNICAST))
return ret;
InetUnicastRouteEntry *uc_rt =
static_cast<InetUnicastRouteEntry *>(rt);
if (uc_rt->proxy_arp() != true) {
uc_rt->set_proxy_arp(true);
ret = true;
}
if (uc_rt->ipam_subnet_route() == true) {
uc_rt->set_ipam_subnet_route(false);
ret = true;
}
return ret;
}
bool InetInterfaceRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
NextHop *nh = NULL;
InterfaceNHKey key(intf_.Clone(), false, InterfaceNHFlags::INET4);
nh = static_cast<NextHop *>(agent->nexthop_table()->FindActiveEntry(&key));
if (path->dest_vn_name() != dest_vn_name_) {
path->set_dest_vn_name(dest_vn_name_);
ret = true;
}
if (path->label() != label_) {
path->set_label(label_);
ret = true;
}
path->set_tunnel_bmap(tunnel_bmap_);
TunnelType::Type tunnel_type = TunnelType::ComputeType(tunnel_bmap_);
if (tunnel_type != path->tunnel_type()) {
path->set_tunnel_type(tunnel_type);
ret = true;
}
path->set_unresolved(false);
if (path->ChangeNH(agent, nh) == true)
ret = true;
return ret;
}
bool DropRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
if (path->dest_vn_name() != vn_) {
path->set_dest_vn_name(vn_);
ret = true;
}
NextHop *nh = agent->nexthop_table()->discard_nh();
path->set_unresolved(false);
if (path->ChangeNH(agent, nh) == true) {
ret = true;
}
return ret;
}
bool LocalVmRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
NextHop *nh = NULL;
SecurityGroupList path_sg_list;
//TODO Based on key table type pick up interface
VmInterfaceKey intf_key(AgentKey::ADD_DEL_CHANGE, intf_.uuid_, "");
VmInterface *vm_port = static_cast<VmInterface *>
(agent->interface_table()->FindActiveEntry(&intf_key));
bool policy = false;
if (vm_port) {
// Use policy based NH if policy enabled on interface
if (vm_port->policy_enabled()) {
policy = true;
ret = true;
}
}
path->set_tunnel_bmap(tunnel_bmap_);
TunnelType::Type new_tunnel_type = TunnelType::ComputeType(tunnel_bmap_);
if (new_tunnel_type == TunnelType::VXLAN &&
vxlan_id_ == VxLanTable::kInvalidvxlan_id) {
new_tunnel_type = TunnelType::ComputeType(TunnelType::MplsType());
}
if (path->tunnel_type() != new_tunnel_type) {
path->set_tunnel_type(new_tunnel_type);
ret = true;
}
// If policy force-enabled in request, enable policy
path->set_force_policy(force_policy_);
if (force_policy_) {
policy = true;
}
InterfaceNHKey key(intf_.Clone(), policy, flags_);
nh = static_cast<NextHop *>(agent->nexthop_table()->FindActiveEntry(&key));
if (path->label() != mpls_label_) {
path->set_label(mpls_label_);
ret = true;
}
if (path->vxlan_id() != vxlan_id_) {
path->set_vxlan_id(vxlan_id_);
ret = true;
}
if (path->dest_vn_name() != dest_vn_name_) {
path->set_dest_vn_name(dest_vn_name_);
ret = true;
}
path_sg_list = path->sg_list();
if (path_sg_list != sg_list_) {
path->set_sg_list(sg_list_);
ret = true;
}
//Priority and sequence no of path are updated from path
//preference state machine
//Path preference value enqueued here would be copied
//only if
//1> ecmp field is set to true, meaning path would be
// active-active
//2> static preference is set, meaning external entity
// would specify the preference of this path(ex LBaaS)
//3> Change in priority when static preference is set
if (path->path_preference().ConfigChanged(path_preference_)) {
path->set_path_preference(path_preference_);
ret = true;
}
if (path->peer() && path->peer()->GetType() == Peer::BGP_PEER) {
//Copy entire path preference for BGP peer path,
//since allowed-address pair config doesn't modify
//preference on BGP path
if (path->path_preference() != path_preference_) {
path->set_path_preference(path_preference_);
ret = true;
}
}
// When BGP path was added, the policy flag in BGP path was based on
// interface config at that instance. If the policy flag changes in
// path for "Local Peer", we should change policy flag on BGP peer
// also. Check if policy has changed and enable SYNC of all path in
// this case
// Ideally his is needed only for LocalPath. But, having code for all
// paths does not have any problem
bool old_policy = false;
bool new_policy = false;
if (path->ComputeNextHop(agent) && path->ComputeNextHop(agent)->PolicyEnabled())
old_policy = true;
if (nh && nh->PolicyEnabled())
new_policy = true;
if (old_policy != new_policy) {
sync_route_ = true;
}
if (path->subnet_gw_ip() != subnet_gw_ip_) {
path->set_subnet_gw_ip(subnet_gw_ip_);
ret = true;
}
path->set_unresolved(false);
path->SyncRoute(sync_route_);
if (path->ChangeNH(agent, nh) == true)
ret = true;
return ret;
}
bool VlanNhRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
NextHop *nh = NULL;
SecurityGroupList path_sg_list;
assert(intf_.type_ == Interface::VM_INTERFACE);
VlanNHKey key(intf_.uuid_, tag_);
nh = static_cast<NextHop *>(agent->nexthop_table()->FindActiveEntry(&key));
if (nh) {
assert(nh->GetType() == NextHop::VLAN);
}
if (path->label() != label_) {
path->set_label(label_);
ret = true;
}
if (path->dest_vn_name() != dest_vn_name_) {
path->set_dest_vn_name(dest_vn_name_);
ret = true;
}
path_sg_list = path->sg_list();
if (path_sg_list != sg_list_) {
path->set_sg_list(sg_list_);
ret = true;
}
//Copy over entire path preference structure, whenever there is a
//transition from active-active to active-backup struture
if (path->path_preference().ecmp() != path_preference_.ecmp()) {
path->set_path_preference(path_preference_);
ret = true;
}
path->set_tunnel_bmap(tunnel_bmap_);
TunnelType::Type tunnel_type = TunnelType::ComputeType(tunnel_bmap_);
if (tunnel_type != path->tunnel_type()) {
path->set_tunnel_type(tunnel_type);
ret = true;
}
path->set_unresolved(false);
if (path->ChangeNH(agent, nh) == true) {
ret = true;
}
return ret;
}
bool ResolveRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
NextHop *nh = NULL;
ResolveNHKey key(intf_key_.get(), policy_);
nh = static_cast<NextHop *>(agent->nexthop_table()->FindActiveEntry(&key));
path->set_unresolved(false);
if (path->dest_vn_name() != dest_vn_name_) {
path->set_dest_vn_name(dest_vn_name_);
ret = true;
}
if (path->label() != label_) {
path->set_label(label_);
ret = true;
}
if (path->sg_list() != path_sg_list_) {
path->set_sg_list(path_sg_list_);
ret = true;
}
//By default resolve route on gateway interface
//is supported with MPLSoGRE or MplsoUdp port
path->set_tunnel_bmap(TunnelType::MplsType());
TunnelType::Type new_tunnel_type =
TunnelType::ComputeType(TunnelType::MplsType());
if (path->tunnel_type() != new_tunnel_type) {
path->set_tunnel_type(new_tunnel_type);
}
if (path->ChangeNH(agent, nh) == true)
ret = true;
return ret;
}
bool ReceiveRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
NextHop *nh = NULL;
//TODO check if it needs to know table type
ReceiveNHKey key(intf_.Clone(), policy_);
nh = static_cast<NextHop *>(agent->nexthop_table()->FindActiveEntry(&key));
path->set_unresolved(false);
if (path->dest_vn_name() != vn_) {
path->set_dest_vn_name(vn_);
ret = true;
}
if (path->label() != label_) {
path->set_label(label_);
ret = true;
}
if (path->ChangeNH(agent, nh) == true)
ret = true;
return ret;
}
bool ReceiveRoute::UpdateRoute(AgentRoute *rt) {
bool ret = false;
AgentRouteTable *table = static_cast<AgentRouteTable *>(rt->get_table());
if ((table->GetTableType() != Agent::INET4_UNICAST) &&
(table->GetTableType() != Agent::INET6_UNICAST))
return ret;
InetUnicastRouteEntry *uc_rt =
static_cast<InetUnicastRouteEntry *>(rt);
if (uc_rt->proxy_arp() != proxy_arp_) {
uc_rt->set_proxy_arp(proxy_arp_);
ret = true;
}
return ret;
}
bool MulticastRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
NextHop *nh = NULL;
agent->nexthop_table()->Process(composite_nh_req_);
nh = static_cast<NextHop *>(agent->nexthop_table()->
FindActiveEntry(composite_nh_req_.key.get()));
assert(nh);
ret = MulticastRoute::CopyPathParameters(agent,
path,
vn_name_,
false,
vxlan_id_,
label_,
tunnel_type_,
nh);
return ret;
}
bool MulticastRoute::CopyPathParameters(Agent *agent,
AgentPath *path,
const std::string &vn_name,
bool unresolved,
uint32_t vxlan_id,
uint32_t label,
uint32_t tunnel_type,
NextHop *nh) {
path->set_dest_vn_name(vn_name);
path->set_unresolved(unresolved);
path->set_vxlan_id(vxlan_id);
if ((path->peer() != agent->local_vm_peer()) &&
(path->peer() != agent->local_peer()))
path->set_label(label);
//Setting of tunnel is only for simulated TOR.
path->set_tunnel_bmap(tunnel_type);
TunnelType::Type new_tunnel_type =
TunnelType::ComputeType(tunnel_type);
if (new_tunnel_type == TunnelType::VXLAN &&
vxlan_id == VxLanTable::kInvalidvxlan_id) {
new_tunnel_type = TunnelType::ComputeType(TunnelType::MplsType());
}
if (path->tunnel_type() != new_tunnel_type) {
path->set_tunnel_type(new_tunnel_type);
}
path->ChangeNH(agent, nh);
return true;
}
bool PathPreferenceData::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
bool ret = false;
//ECMP flag will not be changed by path preference module,
//hence retain value in path
if (!path) {
return ret;
}
path_preference_.set_ecmp(path->path_preference().ecmp());
if (path &&
path->path_preference() != path_preference_) {
path->set_path_preference(path_preference_);
ret = true;
}
return ret;
}
// Subnet Route route data
IpamSubnetRoute::IpamSubnetRoute(DBRequest &nh_req,
const std::string &dest_vn_name) :
AgentRouteData(false), dest_vn_name_(dest_vn_name) {
nh_req_.Swap(&nh_req);
}
bool IpamSubnetRoute::AddChangePath(Agent *agent, AgentPath *path,
const AgentRoute *rt) {
agent->nexthop_table()->Process(nh_req_);
NextHop *nh = static_cast<NextHop *>(agent->nexthop_table()->
FindActiveEntry(nh_req_.key.get()));
assert(nh);
bool ret = false;
if (path->ChangeNH(agent, nh) == true) {
ret = true;
}
path->set_is_subnet_discard(true);
if (path->dest_vn_name() != dest_vn_name_) {
path->set_dest_vn_name(dest_vn_name_);
ret = true;
}
//Resync of subnet route is needed for identifying if arp flood flag
//needs to be enabled for all the smaller subnets present w.r.t. this subnet
//route.
AgentRouteTable *table = static_cast<AgentRouteTable *>(rt->get_table());
assert((table->GetTableType() == Agent::INET4_UNICAST) ||
(table->GetTableType() == Agent::INET6_UNICAST));
InetUnicastAgentRouteTable *uc_rt_table =
static_cast<InetUnicastAgentRouteTable *>(table);
const InetUnicastRouteEntry *uc_rt =
static_cast<const InetUnicastRouteEntry *>(rt);
uc_rt_table->ResyncSubnetRoutes(uc_rt, true);
return ret;
}
bool IpamSubnetRoute::UpdateRoute(AgentRoute *rt) {
bool ret = false;
InetUnicastRouteEntry *uc_rt =
static_cast<InetUnicastRouteEntry *>(rt);
if (uc_rt->ipam_subnet_route() != true) {
uc_rt->set_ipam_subnet_route(true);
ret = true;
}
if (uc_rt->proxy_arp() == true) {
uc_rt->set_proxy_arp(false);
ret =true;
}
return ret;
}
///////////////////////////////////////////////
// Sandesh routines below (route_sandesh.cc)
//////////////////////////////////////////////
//TODO make it generic
void UnresolvedNH::HandleRequest() const {
VrfEntry *vrf = Agent::GetInstance()->vrf_table()->FindVrfFromId(0);
if (!vrf) {
ErrorResp *resp = new ErrorResp();
resp->set_context(context());
resp->Response();
return;
}
int count = 0;
std::string empty("");
AgentRouteTable *rt_table = static_cast<AgentRouteTable *>
(vrf->GetInet4UnicastRouteTable());
NhListResp *resp = new NhListResp();
//TODO - Convert inet4ucroutetable to agentroutetable
AgentRouteTable::UnresolvedNHTree::const_iterator it;
it = rt_table->unresolved_nh_begin();
for (;it != rt_table->unresolved_nh_end(); it++) {
count++;
const NextHop *nh = *it;
nh->DBEntrySandesh(resp, empty);
if (count == 1) {
resp->set_context(context()+"$");