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Diffstat (limited to 'src/vpp-api/vom/acl_binding.hpp')
-rw-r--r-- | src/vpp-api/vom/acl_binding.hpp | 422 |
1 files changed, 422 insertions, 0 deletions
diff --git a/src/vpp-api/vom/acl_binding.hpp b/src/vpp-api/vom/acl_binding.hpp new file mode 100644 index 00000000000..faf9b245cae --- /dev/null +++ b/src/vpp-api/vom/acl_binding.hpp @@ -0,0 +1,422 @@ +/* + * 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_ACL_BINDING_H__ +#define __VOM_ACL_BINDING_H__ + +#include <ostream> + +#include "vom/acl_list.hpp" +#include "vom/acl_types.hpp" +#include "vom/hw.hpp" +#include "vom/inspect.hpp" +#include "vom/interface.hpp" +#include "vom/object_base.hpp" +#include "vom/om.hpp" +#include "vom/rpc_cmd.hpp" +#include "vom/singular_db.hpp" + +namespace VOM { +namespace ACL { +/** + * A binding between an ACL and an interface. + * A representation of the application of the ACL to the interface. + */ +template <typename LIST, typename BIND, typename DUMP> +class binding : public object_base +{ +public: + /** + * The key for a binding is the direction and the interface + */ + typedef std::pair<direction_t, interface::key_type> key_t; + + /** + * Construct a new object matching the desried state + */ + binding(const direction_t& direction, const interface& itf, const LIST& acl) + : m_direction(direction) + , m_itf(itf.singular()) + , m_acl(acl.singular()) + , m_binding(0) + { + m_evh.order(); + } + + /** + * Copy Constructor + */ + binding(const binding& o) + : m_direction(o.m_direction) + , m_itf(o.m_itf) + , m_acl(o.m_acl) + , m_binding(0) + { + } + + /** + * Destructor + */ + ~binding() + { + sweep(); + m_db.release(std::make_pair(m_direction, m_itf->key()), this); + } + + /** + * Return the 'singular instance' of the L2 config that matches this + * object + */ + std::shared_ptr<binding> singular() const { return find_or_add(*this); } + + /** + * convert to string format for debug purposes + */ + std::string to_string() const + { + std::ostringstream s; + s << "acl-binding:[" << m_direction.to_string() << " " << m_itf->to_string() + << " " << m_acl->to_string() << " " << m_binding.to_string() << "]"; + + return (s.str()); + } + + /** + * Dump all bindings into the stream provided + */ + static void dump(std::ostream& os) { m_db.dump(os); } + + /** + * A command class that binds the ACL to the interface + */ + class bind_cmd : public rpc_cmd<HW::item<bool>, rc_t, BIND> + { + public: + /** + * Constructor + */ + bind_cmd(HW::item<bool>& item, + const direction_t& direction, + const handle_t& itf, + const handle_t& acl) + : rpc_cmd<HW::item<bool>, rc_t, BIND>(item) + , m_direction(direction) + , m_itf(itf) + , m_acl(acl) + { + } + + /** + * Issue the command to VPP/HW + */ + rc_t issue(connection& con); + + /** + * convert to string format for debug purposes + */ + std::string to_string() const + { + std::ostringstream s; + s << "acl-bind:[" << m_direction.to_string() + << " itf:" << m_itf.to_string() << " acl:" << m_acl.to_string() << "]"; + + return (s.str()); + } + + /** + * Comparison operator - only used for UT + */ + bool operator==(const bind_cmd& other) const + { + return ((m_itf == other.m_itf) && (m_acl == m_acl)); + } + + private: + /** + * The direction of the binding + */ + const direction_t m_direction; + + /** + * The interface to bind to + */ + const handle_t m_itf; + + /** + * The ACL to bind + */ + const handle_t m_acl; + }; + + /** + * A command class that binds the ACL to the interface + */ + class unbind_cmd : public rpc_cmd<HW::item<bool>, rc_t, BIND> + { + public: + /** + * Constructor + */ + unbind_cmd(HW::item<bool>& item, + const direction_t& direction, + const handle_t& itf, + const handle_t& acl) + : rpc_cmd<HW::item<bool>, rc_t, BIND>(item) + , m_direction(direction) + , m_itf(itf) + , m_acl(acl) + { + } + + /** + * Issue the command to VPP/HW + */ + rc_t issue(connection& con); + + /** + * convert to string format for debug purposes + */ + std::string to_string() const + { + std::ostringstream s; + s << "acl-unbind:[" << m_direction.to_string() + << " itf:" << m_itf.to_string() << " acl:" << m_acl.to_string() << "]"; + + return (s.str()); + } + + /** + * Comparison operator - only used for UT + */ + bool operator==(const unbind_cmd& other) const + { + return ((m_itf == other.m_itf) && (m_acl == m_acl)); + } + + private: + /** + * The direction of the binding + */ + const direction_t m_direction; + + /** + * The interface to bind to + */ + const handle_t m_itf; + + /** + * The ACL to bind + */ + const handle_t m_acl; + }; + + /** + * A cmd class that Dumps all the ACLs + */ + class dump_cmd : public VOM::dump_cmd<DUMP> + { + public: + /** + * Constructor + */ + dump_cmd() = default; + dump_cmd(const dump_cmd& d) = default; + + /** + * Issue the command to VPP/HW + */ + rc_t issue(connection& con); + + /** + * convert to string format for debug purposes + */ + std::string to_string() const { return ("acl-bind-dump"); } + + private: + /** + * HW reutrn code + */ + HW::item<bool> item; + }; + +private: + /** + * Class definition for listeners to OM events + */ + class event_handler : public OM::listener, public inspect::command_handler + { + public: + event_handler() + { + OM::register_listener(this); + inspect::register_handler({ "acl-binding" }, "ACL bindings", this); + } + virtual ~event_handler() = default; + + /** + * Handle a populate event + */ + void handle_populate(const client_db::key_t& key); + + /** + * Handle a replay event + */ + void handle_replay() { m_db.replay(); } + + /** + * Show the object in the Singular DB + */ + void show(std::ostream& os) { m_db.dump(os); } + + /** + * Get the sortable Id of the listener + */ + dependency_t order() const { return (dependency_t::BINDING); } + }; + + /** + * event_handler to register with OM + */ + static event_handler m_evh; + + /** + * Enquue commonds to the VPP command Q for the update + */ + void update(const binding& obj) + { + if (!m_binding) { + HW::enqueue( + new bind_cmd(m_binding, m_direction, m_itf->handle(), m_acl->handle())); + } + HW::write(); + } + + /** + * Find or Add the instance in the DB + */ + static std::shared_ptr<binding> find_or_add(const binding& temp) + { + return (m_db.find_or_add( + std::make_pair(temp.m_direction, temp.m_itf->key()), temp)); + } + + /* + * It's the OM class that calls singular() + */ + friend class VOM::OM; + + /** + * It's the singular_db class that calls replay() + */ + friend class singular_db<key_t, binding>; + + /** + * Sweep/reap the object if still stale + */ + void sweep(void) + { + if (m_binding) { + HW::enqueue(new unbind_cmd(m_binding, m_direction, m_itf->handle(), + m_acl->handle())); + } + HW::write(); + } + + /** + * Replay the objects state to HW + */ + void replay(void) + { + if (m_binding) { + HW::enqueue( + new bind_cmd(m_binding, m_direction, m_itf->handle(), m_acl->handle())); + } + } + + /** + * The direction the of the packets on which to apply the ACL + * input or output + */ + const direction_t m_direction; + + /** + * A reference counting pointer the interface that this L3 layer + * represents. By holding the reference here, we can guarantee that + * this object will outlive the interface + */ + const std::shared_ptr<interface> m_itf; + + /** + * A reference counting pointer the ACL that this + * interface is bound to. By holding the reference here, we can + * guarantee that this object will outlive the BD. + */ + const std::shared_ptr<LIST> m_acl; + + /** + * HW configuration for the binding. The bool representing the + * do/don't bind. + */ + HW::item<bool> m_binding; + + /** + * A map of all L2 interfaces key against the interface's handle_t + */ + static singular_db<key_t, binding> m_db; +}; + +/** + * Typedef the L3 binding type + */ +typedef binding<l3_list, + vapi::Acl_interface_add_del, + vapi::Acl_interface_list_dump> + l3_binding; + +/** + * Typedef the L2 binding type + */ +typedef binding<l2_list, + vapi::Macip_acl_interface_add_del, + vapi::Macip_acl_interface_list_dump> + l2_binding; + +/** + * Definition of the static Singular DB for ACL bindings + */ +template <typename LIST, typename BIND, typename DUMP> +singular_db<typename ACL::binding<LIST, BIND, DUMP>::key_t, + ACL::binding<LIST, BIND, DUMP>> + binding<LIST, BIND, DUMP>::m_db; + +template <typename LIST, typename BIND, typename DUMP> +typename ACL::binding<LIST, BIND, DUMP>::event_handler + binding<LIST, BIND, DUMP>::m_evh; +}; + +std::ostream& operator<<( + std::ostream& os, + const std::pair<direction_t, interface::key_type>& key); +}; + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "mozilla") + * End: + */ + +#endif |