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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/l2_binding.hpp"
#include "vom/l2_binding_cmds.hpp"
namespace VOM {
/**
* A DB of all the L2 Configs
*/
singular_db<l2_binding::key_t, l2_binding> l2_binding::m_db;
l2_binding::event_handler l2_binding::m_evh;
/*
* Make sure these are in sync with the smae enum in VPP
*/
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_DISABLED(
0,
"disabled");
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_PUSH_1(1,
"push-1");
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_PUSH_2(2,
"push-2");
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_POP_1(3, "pop-1");
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_POP_2(4, "pop-2");
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_TRANSLATE_1_1(
5,
"translate-1-1");
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_TRANSLATE_1_2(
6,
"translate-1-2");
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_TRANSLATE_2_1(
7,
"translate-2-1");
const l2_binding::l2_vtr_op_t l2_binding::l2_vtr_op_t::L2_VTR_TRANSLATE_2_2(
5,
"translate-2-2");
l2_binding::l2_vtr_op_t::l2_vtr_op_t(int v, const std::string s)
: enum_base<l2_binding::l2_vtr_op_t>(v, s)
{
}
/**
* Construct a new object matching the desried state
*/
l2_binding::l2_binding(const interface& itf, const bridge_domain& bd)
: m_itf(itf.singular())
, m_bd(bd.singular())
, m_binding(0)
, m_vtr_op(l2_vtr_op_t::L2_VTR_DISABLED, rc_t::UNSET)
, m_vtr_op_tag(0)
{
}
l2_binding::l2_binding(const l2_binding& o)
: m_itf(o.m_itf)
, m_bd(o.m_bd)
, m_binding(0)
, m_vtr_op(o.m_vtr_op)
, m_vtr_op_tag(o.m_vtr_op_tag)
{
}
const l2_binding::key_t&
l2_binding::key() const
{
return (m_itf->key());
}
bool
l2_binding::operator==(const l2_binding& l) const
{
return ((*m_itf == *l.m_itf) && (*m_bd == *l.m_bd));
}
std::shared_ptr<l2_binding>
l2_binding::find(const key_t& key)
{
return (m_db.find(key));
}
void
l2_binding::sweep()
{
if (m_binding && handle_t::INVALID != m_itf->handle()) {
HW::enqueue(
new l2_binding_cmds::unbind_cmd(m_binding, m_itf->handle(), m_bd->id(),
interface::type_t::BVI == m_itf->type()));
}
// no need to undo the VTR operation.
HW::write();
}
void
l2_binding::replay()
{
if (m_binding && handle_t::INVALID != m_itf->handle()) {
HW::enqueue(
new l2_binding_cmds::bind_cmd(m_binding, m_itf->handle(), m_bd->id(),
interface::type_t::BVI == m_itf->type()));
}
if (m_vtr_op && handle_t::INVALID != m_itf->handle()) {
HW::enqueue(new l2_binding_cmds::set_vtr_op_cmd(m_vtr_op, m_itf->handle(),
m_vtr_op_tag));
}
}
l2_binding::~l2_binding()
{
sweep();
// not in the DB anymore.
m_db.release(m_itf->key(), this);
}
std::string
l2_binding::to_string() const
{
std::ostringstream s;
s << "L2-binding:[" << m_itf->to_string() << " " << m_bd->to_string() << " "
<< m_binding.to_string() << "]";
return (s.str());
}
void
l2_binding::set(const l2_vtr_op_t& op, uint16_t tag)
{
assert(rc_t::UNSET == m_vtr_op.rc());
m_vtr_op.set(rc_t::NOOP);
m_vtr_op.update(op);
m_vtr_op_tag = tag;
}
void
l2_binding::update(const l2_binding& desired)
{
/*
* the desired state is always that the interface should be created
*/
if (rc_t::OK != m_binding.rc()) {
HW::enqueue(
new l2_binding_cmds::bind_cmd(m_binding, m_itf->handle(), m_bd->id(),
interface::type_t::BVI == m_itf->type()));
} else if (!(*m_bd == *desired.m_bd)) {
/*
* re-binding to a different BD. do unbind, bind.
*/
HW::enqueue(
new l2_binding_cmds::unbind_cmd(m_binding, m_itf->handle(), m_bd->id(),
interface::type_t::BVI == m_itf->type()));
m_bd = desired.m_bd;
HW::enqueue(
new l2_binding_cmds::bind_cmd(m_binding, m_itf->handle(), m_bd->id(),
interface::type_t::BVI == m_itf->type()));
}
/*
* set the VTR operation if request
*/
if (m_vtr_op.update(desired.m_vtr_op)) {
HW::enqueue(new l2_binding_cmds::set_vtr_op_cmd(m_vtr_op, m_itf->handle(),
m_vtr_op_tag));
}
}
std::shared_ptr<l2_binding>
l2_binding::find_or_add(const l2_binding& temp)
{
return (m_db.find_or_add(temp.m_itf->key(), temp));
}
std::shared_ptr<l2_binding>
l2_binding::singular() const
{
return find_or_add(*this);
}
void
l2_binding::dump(std::ostream& os)
{
m_db.dump(os);
}
l2_binding::event_handler::event_handler()
{
OM::register_listener(this);
inspect::register_handler({ "l2" }, "L2 bindings", this);
}
void
l2_binding::event_handler::handle_replay()
{
m_db.replay();
}
void
l2_binding::event_handler::handle_populate(const client_db::key_t& key)
{
/**
* This is done while populating the bridge-domain
*/
}
dependency_t
l2_binding::event_handler::order() const
{
return (dependency_t::BINDING);
}
void
l2_binding::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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