From 812ed39f9da336310e815c361ab5a9f118657d94 Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Mon, 16 Oct 2017 04:20:13 -0700 Subject: VPP Object Model (VOM) The VOM is a C++ library for use by clients/agents of VPP for programming state. It uses the binary APIs to do so. Various other common client side functions are also provided. Please see om.hpp for a more detailed description. Change-Id: Ib756bfe99817093815a9e26ccf464aa5583fc523 Signed-off-by: Neale Ranns Co-authored-by: Mohsin Kazmi --- src/vpp-api/vom/nat_binding.hpp | 335 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 335 insertions(+) create mode 100644 src/vpp-api/vom/nat_binding.hpp (limited to 'src/vpp-api/vom/nat_binding.hpp') diff --git a/src/vpp-api/vom/nat_binding.hpp b/src/vpp-api/vom/nat_binding.hpp new file mode 100644 index 00000000000..6e871f9aa91 --- /dev/null +++ b/src/vpp-api/vom/nat_binding.hpp @@ -0,0 +1,335 @@ +/* + * 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. + */ + +#ifndef __VOM_NAT_BINDING_H__ +#define __VOM_NAT_BINDING_H__ + +#include "vom/hw.hpp" +#include "vom/interface.hpp" +#include "vom/object_base.hpp" +#include "vom/om.hpp" +#include "vom/rpc_cmd.hpp" +#include "vom/singular_db.hpp" + +#include + +namespace VOM { +/** + * A Clas representing the binding of an L2 interface to a bridge-domain + * and the properties of that binding. + */ +class nat_binding : public object_base +{ +public: + /** + * NAT Zoness + */ + struct zone_t : public enum_base + { + /** + * Constructor + */ + zone_t(int v, const std::string s); + + /** + * Destructor + */ + ~zone_t() = default; + + /** + * Permit Zone + */ + const static zone_t INSIDE; + + /** + * Deny Zone + */ + const static zone_t OUTSIDE; + }; + + /** + * The key for a NAT Binding. + * The zoe is not included, since the same interface is never inside + * and outside. + */ + typedef std::tuple key_t; + + /** + * Construct a new object matching the desried state + * @param itf The interface onto which we bind/apply the feature + * @param dir The direction (input/output) + * @param proto The L3 proto used inside. + * @param zone The NAT zone for the link + */ + nat_binding(const interface& itf, + const direction_t& dir, + const l3_proto_t& proto, + const zone_t& zone); + + /** + * Copy Constructor + */ + nat_binding(const nat_binding& o); + + /** + * Destructor + */ + ~nat_binding(); + + /** + * Return the 'singular instance' of the L2 config that matches this + * object + */ + std::shared_ptr singular() const; + + /** + * convert to string format for debug purposes + */ + std::string to_string() const; + + /** + * Dump all nat_bindings into the stream provided + */ + static void dump(std::ostream& os); + + /** + * A functor class that binds L2 configuration to an interface + */ + class bind_44_input_cmd + : public rpc_cmd, + rc_t, + vapi::Nat44_interface_add_del_feature> + { + public: + /** + * Constructor + */ + bind_44_input_cmd(HW::item& item, + const handle_t& itf, + const zone_t& zone); + + /** + * Issue the command to VPP/HW + */ + rc_t issue(connection& con); + /** + * convert to string format for debug purposes + */ + std::string to_string() const; + + /** + * Comparison operator - only used for UT + */ + bool operator==(const bind_44_input_cmd& i) const; + + private: + /** + * The interface to bind + */ + const handle_t m_itf; + + /** + * The zone the interface is in + */ + const zone_t m_zone; + }; + + /** + * A cmd class that Unbinds L2 configuration from an interface + */ + class unbind_44_input_cmd + : public rpc_cmd, + rc_t, + vapi::Nat44_interface_add_del_feature> + { + public: + /** + * Constructor + */ + unbind_44_input_cmd(HW::item& item, + const handle_t& itf, + const zone_t& zone); + + /** + * Issue the command to VPP/HW + */ + rc_t issue(connection& con); + /** + * convert to string format for debug purposes + */ + std::string to_string() const; + + /** + * Comparison operator - only used for UT + */ + bool operator==(const unbind_44_input_cmd& i) const; + + private: + /** + * The interface to bind + */ + const handle_t m_itf; + + /** + * The zone the interface is in + */ + const zone_t m_zone; + }; + + /** + * A cmd class that Dumps all the nat_statics + */ + class dump_44_cmd : public dump_cmd + { + public: + /** + * Constructor + */ + dump_44_cmd(); + dump_44_cmd(const dump_44_cmd& d); + + /** + * Issue the command to VPP/HW + */ + rc_t issue(connection& con); + /** + * convert to string format for debug purposes + */ + std::string to_string() const; + + /** + * Comparison operator - only used for UT + */ + bool operator==(const dump_44_cmd& i) const; + + private: + /** + * HW reutrn code + */ + HW::item item; + }; + +private: + /** + * Class definition for listeners to OM events + */ + class event_handler : public OM::listener, public inspect::command_handler + { + public: + event_handler(); + virtual ~event_handler() = default; + + /** + * Handle a populate event + */ + void handle_populate(const client_db::key_t& key); + + /** + * Handle a replay event + */ + void handle_replay(); + + /** + * Show the object in the Singular DB + */ + void show(std::ostream& os); + + /** + * Get the sortable Id of the listener + */ + dependency_t order() const; + }; + + /** + * event_handler to register with OM + */ + static event_handler m_evh; + + /** + * Enquue commonds to the VPP command Q for the update + */ + void update(const nat_binding& obj); + + /** + * Find or Add the singular instance in the DB + */ + static std::shared_ptr find_or_add(const nat_binding& temp); + + /* + * It's the OM class that calls singular() + */ + friend class OM; + + /** + * It's the singular_db class that calls replay() + */ + friend class singular_db; + + /** + * Sweep/reap the object if still stale + */ + void sweep(void); + + /** + * replay the object to create it in hardware + */ + void replay(void); + + /** + * HW configuration for the binding. The bool representing the + * do/don't bind. + */ + HW::item m_binding; + + /** + * A reference counting pointer the interface that this NAT binding + * represents. By holding the reference here, we can guarantee that + * this object will outlive the interface + */ + const std::shared_ptr m_itf; + + /** + * The direction in which the feature applies + */ + direction_t m_dir; + + /** + * The L3 protocol used on the inside + */ + l3_proto_t m_proto; + + /** + * The NAT zone the interface is in + */ + zone_t m_zone; + + /** + * A map of all L2 interfaces key against the interface's handle_t + */ + static singular_db m_db; +}; + +std::ostream& operator<<(std::ostream& os, const nat_binding::key_t& key); +}; + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "mozilla") + * End: + */ + +#endif -- cgit 1.2.3-korg