X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=extras%2Fvom%2Fvom%2Fnat_binding.cpp;fp=extras%2Fvom%2Fvom%2Fnat_binding.cpp;h=64b7a1007ac94b6a76bb593d67a3defb0c274b0f;hb=164e5f8c63652028ecb9c3570e1ea8618b163071;hp=0000000000000000000000000000000000000000;hpb=aa682a39b76ee043f65313f23e134bf18fe7a47e;p=vpp.git diff --git a/extras/vom/vom/nat_binding.cpp b/extras/vom/vom/nat_binding.cpp new file mode 100644 index 00000000000..64b7a1007ac --- /dev/null +++ b/extras/vom/vom/nat_binding.cpp @@ -0,0 +1,280 @@ +/* + * 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_binding.hpp" +#include "vom/cmd.hpp" +#include "vom/nat_binding_cmds.hpp" +#include "vom/singular_db_funcs.hpp" + +namespace VOM { +singular_db nat_binding::m_db; + +nat_binding::event_handler nat_binding::m_evh; + +const nat_binding::zone_t nat_binding::zone_t::INSIDE(0, "inside"); +const nat_binding::zone_t nat_binding::zone_t::OUTSIDE(0, "outside"); + +nat_binding::zone_t::zone_t(int v, const std::string s) + : enum_base(v, s) +{ +} +const nat_binding::zone_t& +nat_binding::zone_t::from_vpp(u8 is_inside) +{ + if (is_inside) + return zone_t::INSIDE; + return zone_t::OUTSIDE; +} + +/** + * Construct a new object matching the desried state + */ +nat_binding::nat_binding(const interface& itf, + const direction_t& dir, + const l3_proto_t& proto, + const zone_t& zone) + : m_binding(false) + , m_itf(itf.singular()) + , m_dir(dir) + , m_proto(proto) + , m_zone(zone) +{ +} + +nat_binding::nat_binding(const nat_binding& o) + : m_binding(o.m_binding) + , m_itf(o.m_itf) + , m_dir(o.m_dir) + , m_proto(o.m_proto) + , m_zone(o.m_zone) +{ +} + +nat_binding::~nat_binding() +{ + sweep(); + m_db.release(key(), this); +} + +const nat_binding::key_t +nat_binding::key() const +{ + return (make_tuple(m_itf->key(), m_dir, m_proto)); +} + +bool +nat_binding::operator==(const nat_binding& n) const +{ + return ((key() == n.key()) && (m_zone == n.m_zone)); +} + +void +nat_binding::sweep() +{ + if (m_binding) { + if (direction_t::INPUT == m_dir) { + if (l3_proto_t::IPV4 == m_proto) { + HW::enqueue(new nat_binding_cmds::unbind_44_input_cmd( + m_binding, m_itf->handle(), m_zone)); + } else { + HW::enqueue(new nat_binding_cmds::unbind_66_input_cmd( + m_binding, m_itf->handle(), m_zone)); + } + } else { + if (l3_proto_t::IPV4 == m_proto) { + HW::enqueue(new nat_binding_cmds::unbind_44_output_cmd( + m_binding, m_itf->handle(), m_zone)); + } else { + VOM_LOG(log_level_t::ERROR) << "NAT 66 output feature not supported"; + } + } + } + HW::write(); +} + +void +nat_binding::replay() +{ + if (m_binding) { + if (direction_t::INPUT == m_dir) { + if (l3_proto_t::IPV4 == m_proto) { + HW::enqueue(new nat_binding_cmds::bind_44_input_cmd( + m_binding, m_itf->handle(), m_zone)); + } else { + HW::enqueue(new nat_binding_cmds::bind_66_input_cmd( + m_binding, m_itf->handle(), m_zone)); + } + } else { + if (l3_proto_t::IPV4 == m_proto) { + HW::enqueue(new nat_binding_cmds::bind_44_output_cmd( + m_binding, m_itf->handle(), m_zone)); + } else { + VOM_LOG(log_level_t::ERROR) << "NAT 66 output feature not supported"; + } + } + } +} + +void +nat_binding::update(const nat_binding& desired) +{ + /* + * the desired state is always that the interface should be created + */ + if (!m_binding) { + if (direction_t::INPUT == m_dir) { + if (l3_proto_t::IPV4 == m_proto) { + HW::enqueue(new nat_binding_cmds::bind_44_input_cmd( + m_binding, m_itf->handle(), m_zone)); + } else { + HW::enqueue(new nat_binding_cmds::bind_66_input_cmd( + m_binding, m_itf->handle(), m_zone)); + } + } else { + if (l3_proto_t::IPV4 == m_proto) { + HW::enqueue(new nat_binding_cmds::bind_44_output_cmd( + m_binding, m_itf->handle(), m_zone)); + } else { + VOM_LOG(log_level_t::ERROR) << "NAT 66 output feature not supported"; + } + } + } +} + +std::string +nat_binding::to_string() const +{ + std::ostringstream s; + s << "nat-binding:[" << m_itf->to_string() + << " direction:" << m_dir.to_string() << " proto:" << m_proto.to_string() + << " zone:" << m_zone.to_string() << "]"; + + return (s.str()); +} + +std::shared_ptr +nat_binding::find_or_add(const nat_binding& temp) +{ + return (m_db.find_or_add(temp.key(), temp)); +} + +std::shared_ptr +nat_binding::find(const key_t& key) +{ + return (m_db.find(key)); +} + +std::shared_ptr +nat_binding::singular() const +{ + return find_or_add(*this); +} + +void +nat_binding::dump(std::ostream& os) +{ + db_dump(m_db, os); +} + +std::ostream& +operator<<(std::ostream& os, const nat_binding::key_t& key) +{ + os << "[" << std::get<0>(key) << ", " << std::get<1>(key) << ", " + << std::get<2>(key) << "]"; + + return (os); +} + +nat_binding::event_handler::event_handler() +{ + OM::register_listener(this); + inspect::register_handler({ "nat-binding" }, "NAT bindings", this); +} + +void +nat_binding::event_handler::handle_replay() +{ + m_db.replay(); +} + +void +nat_binding::event_handler::handle_populate(const client_db::key_t& key) +{ + std::shared_ptr icmd = + std::make_shared(); + + HW::enqueue(icmd); + HW::write(); + + for (auto& record : *icmd) { + auto& payload = record.get_payload(); + + std::shared_ptr itf = interface::find(payload.sw_if_index); + nat_binding nb(*itf, direction_t::INPUT, l3_proto_t::IPV4, + zone_t::from_vpp(payload.is_inside)); + OM::commit(key, nb); + } + + std::shared_ptr ocmd = + std::make_shared(); + + HW::enqueue(ocmd); + HW::write(); + + for (auto& record : *ocmd) { + auto& payload = record.get_payload(); + + std::shared_ptr itf = interface::find(payload.sw_if_index); + nat_binding nb(*itf, direction_t::OUTPUT, l3_proto_t::IPV4, + zone_t::from_vpp(payload.is_inside)); + OM::commit(key, nb); + } + + std::shared_ptr i6cmd = + std::make_shared(); + + HW::enqueue(i6cmd); + HW::write(); + + for (auto& record : *i6cmd) { + auto& payload = record.get_payload(); + + std::shared_ptr itf = interface::find(payload.sw_if_index); + nat_binding nb(*itf, direction_t::INPUT, l3_proto_t::IPV6, + zone_t::from_vpp(payload.is_inside)); + OM::commit(key, nb); + } +} + +dependency_t +nat_binding::event_handler::order() const +{ + return (dependency_t::BINDING); +} + +void +nat_binding::event_handler::show(std::ostream& os) +{ + db_dump(m_db, os); +} +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "mozilla") + * End: + */