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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "vom/nat_static.hpp"
#include "vom/nat_static_cmds.hpp"
namespace VOM {
singular_db<nat_static::key_t, nat_static> nat_static::m_db;
nat_static::event_handler nat_static::m_evh;
nat_static::nat_static(const boost::asio::ip::address& inside,
const boost::asio::ip::address_v4& outside)
: m_hw(false)
, m_rd(route_domain::get_default())
, m_inside(inside)
, m_outside(outside)
{
}
nat_static::nat_static(const route_domain& rd,
const boost::asio::ip::address& inside,
const boost::asio::ip::address_v4& outside)
: m_hw(false)
, m_rd(rd.singular())
, m_inside(inside)
, m_outside(outside)
{
}
nat_static::nat_static(const nat_static& ns)
: m_hw(ns.m_hw)
, m_rd(ns.m_rd)
, m_inside(ns.m_inside)
, m_outside(ns.m_outside)
{
}
nat_static::~nat_static()
{
sweep();
// not in the DB anymore.
m_db.release(key(), this);
}
const nat_static::key_t
nat_static::key() const
{
return (std::make_pair(m_rd->key(), m_outside));
}
bool
nat_static::operator==(const nat_static& n) const
{
return ((key() == n.key()) && (m_inside == n.m_inside));
}
void
nat_static::sweep()
{
if (m_hw) {
if (m_inside.is_v4()) {
HW::enqueue(new nat_static_cmds::delete_44_cmd(
m_hw, m_rd->table_id(), m_inside.to_v4(), m_outside));
}
}
HW::write();
}
void
nat_static::replay()
{
if (m_hw) {
if (m_inside.is_v4()) {
HW::enqueue(new nat_static_cmds::create_44_cmd(
m_hw, m_rd->table_id(), m_inside.to_v4(), m_outside));
}
}
}
void
nat_static::update(const nat_static& r)
{
/*
* create the table if it is not yet created
*/
if (rc_t::OK != m_hw.rc()) {
if (m_inside.is_v4()) {
HW::enqueue(new nat_static_cmds::create_44_cmd(
m_hw, m_rd->table_id(), m_inside.to_v4(), m_outside));
}
}
}
std::string
nat_static::to_string() const
{
std::ostringstream s;
s << "nat-static:["
<< "table:" << m_rd->to_string() << " inside:" << m_inside.to_string()
<< " outside:" << m_outside.to_string() << "]";
return (s.str());
}
std::shared_ptr<nat_static>
nat_static::find_or_add(const nat_static& temp)
{
return (m_db.find_or_add(temp.key(), temp));
}
std::shared_ptr<nat_static>
nat_static::find(const key_t& key)
{
return (m_db.find(key));
}
std::shared_ptr<nat_static>
nat_static::singular() const
{
return find_or_add(*this);
}
void
nat_static::dump(std::ostream& os)
{
m_db.dump(os);
}
nat_static::event_handler::event_handler()
{
OM::register_listener(this);
inspect::register_handler({ "nat-static" }, "NAT Statics", this);
}
void
nat_static::event_handler::handle_replay()
{
m_db.replay();
}
void
nat_static::event_handler::handle_populate(const client_db::key_t& key)
{
/*
* dump VPP current states
*/
std::shared_ptr<nat_static_cmds::dump_44_cmd> cmd =
std::make_shared<nat_static_cmds::dump_44_cmd>();
HW::enqueue(cmd);
HW::write();
for (auto& record : *cmd) {
auto& payload = record.get_payload();
boost::asio::ip::address inside = from_bytes(0, payload.local_ip_address);
boost::asio::ip::address outside =
from_bytes(0, payload.external_ip_address);
nat_static n(route_domain(payload.vrf_id), inside, outside.to_v4());
/*
* Write each of the discovered mappings into the OM,
* but disable the HW Command q whilst we do, so that no
* commands are sent to VPP
*/
OM::commit(key, n);
}
}
dependency_t
nat_static::event_handler::order() const
{
return (dependency_t::ENTRY);
}
void
nat_static::event_handler::show(std::ostream& os)
{
m_db.dump(os);
}
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "mozilla")
* End:
*/
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