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authorNeale Ranns <neale.ranns@cisco.com>2017-10-16 04:20:13 -0700
committerDamjan Marion <dmarion.lists@gmail.com>2017-11-01 09:28:06 +0000
commit812ed39f9da336310e815c361ab5a9f118657d94 (patch)
tree9d8cddc917acbb65b3dc401d880d5eb2a7f392c6 /src/vpp-api/vom/interface_ip6_nd.hpp
parent14edd97c20735ffd1c24000a7df78e154ac61478 (diff)
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 <neale.ranns@cisco.com> Co-authored-by: Mohsin Kazmi <sykazmi@cisco.com>
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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.
+ */
+
+#ifndef __VOM_INTERFACE_IP6_ND_H__
+#define __VOM_INTERFACE_IP6_ND_H__
+
+#include "vom/dump_cmd.hpp"
+#include "vom/hw.hpp"
+#include "vom/inspect.hpp"
+#include "vom/interface.hpp"
+#include "vom/object_base.hpp"
+#include "vom/om.hpp"
+#include "vom/ra_config.hpp"
+#include "vom/ra_prefix.hpp"
+#include "vom/rpc_cmd.hpp"
+#include "vom/singular_db.hpp"
+#include "vom/sub_interface.hpp"
+
+#include <vapi/ip.api.vapi.hpp>
+
+namespace VOM {
+/**
+ * A representation of L3 configuration on an interface
+ */
+template <typename CLASS, typename CMD>
+class interface_ip6_nd : public object_base
+{
+public:
+ typedef CLASS class_t;
+ /**
+ * Construct a new object matching the desried state
+ */
+ interface_ip6_nd(const interface& itf, const class_t cls)
+ : m_itf(itf.singular())
+ , m_cls(cls)
+ , m_config(true)
+ {
+ }
+
+ /**
+ * Copy Constructor
+ */
+ interface_ip6_nd(const interface_ip6_nd& o)
+ : m_itf(o.m_itf)
+ , m_cls(o.m_cls)
+ , m_config(o.m_config)
+ {
+ }
+
+ /**
+ * Destructor
+ */
+ ~interface_ip6_nd()
+ {
+ sweep();
+ m_db.release(m_itf->key(), this);
+ }
+
+ /**
+ * Return the 'singular instance' of the interface ip6nd that matches
+ * this object
+ */
+ std::shared_ptr<interface_ip6_nd> singular() const
+ {
+ return find_or_add(*this);
+ }
+
+ /**
+ * convert to string format for debug purposes
+ */
+ std::string to_string() const
+ {
+ std::ostringstream s;
+ s << "interface-ip6-nd:["
+ << " itf:" << m_itf->to_string() << " " << m_cls.to_string() << " "
+ << m_config.to_string() << "]";
+
+ return (s.str());
+ }
+
+ /**
+ * Dump all config into the stream provided
+ */
+ static void dump(std::ostream& os) { m_db.dump(os); }
+
+ /**
+ * The key type for interface ip6 nd
+ */
+ typedef interface::key_type key_t;
+
+ /**
+ * Find an singular instance in the DB for the interface passed
+ */
+ static std::shared_ptr<interface_ip6_nd> find(const interface& i)
+ {
+ /*
+ * Loop throught the entire map looking for matching interface.
+ * not the most efficient algorithm, but it will do for now. The
+ * number of ra configs is low.
+ */
+ std::deque<std::shared_ptr<interface_ip6_nd>> rac;
+
+ auto it = m_db.cbegin();
+
+ while (it != m_db.cend()) {
+ /*
+ * The key in the DB is a pair of the interface's name.
+ * If the keys match, save the ra-config
+ */
+ auto key = it->first;
+
+ if (i.key() == key.first) {
+ rac.push_back(it->second.lock());
+ }
+
+ ++it;
+ }
+
+ return (rac);
+ }
+
+ /**
+ * A functor class that binds the ra config to the interface
+ */
+ class config_cmd : public rpc_cmd<HW::item<bool>, rc_t, CMD>
+ {
+ public:
+ /**
+ * Constructor
+ */
+ config_cmd(HW::item<bool>& item, const handle_t& itf, const class_t& cls)
+ : rpc_cmd<HW::item<bool>, rc_t, CMD>(item)
+ , m_itf(itf)
+ , m_cls(cls)
+ {
+ }
+
+ /**
+ * 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 << "interface-ip6-nd: " << this->item().to_string()
+ << " itf:" << m_itf.to_string() << " " << m_cls.to_string();
+
+ return (s.str());
+ }
+
+ /**
+ * Comparison operator - only used for UT
+ */
+ bool operator==(const config_cmd& other) const
+ {
+ return ((m_itf == other.m_itf) && (m_cls == other.m_cls));
+ }
+
+ private:
+ /**
+ * Reference to the interface to bind to
+ */
+ const handle_t& m_itf;
+
+ /**
+ * Reference to the config class
+ */
+ const class_t& m_cls;
+ };
+
+ /**
+ * A cmd class that Unbinds L3 Config from an interface
+ */
+ class unconfig_cmd : public rpc_cmd<HW::item<bool>, rc_t, CMD>
+ {
+ public:
+ /**
+ * Constructor
+ */
+ unconfig_cmd(HW::item<bool>& item, const handle_t& itf, const class_t& cls)
+ : rpc_cmd<HW::item<bool>, rc_t, CMD>(item)
+ , m_itf(itf)
+ , m_cls(cls)
+ {
+ }
+
+ /**
+ * 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 << "interface-ip6-nd: " << this->item().to_string()
+ << " itf:" << m_itf.to_string() << " " << m_cls.to_string();
+
+ return (s.str());
+ }
+
+ /**
+ * Comparison operator - only used for UT
+ */
+ bool operator==(const unconfig_cmd& other) const
+ {
+ return ((m_itf == other.m_itf) && (m_cls == other.m_cls));
+ }
+
+ private:
+ /**
+ * Reference to the interface to unbind fomr
+ */
+ const handle_t& m_itf;
+
+ /**
+ * Reference to the config class to undo configurations
+ */
+ const class_t& m_cls;
+ };
+
+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({ "ip6_nd " }, "interface ip6 nd", this);
+ }
+
+ virtual ~event_handler() = default;
+
+ /**
+ * Handle a populate event
+ */
+ void handle_populate(const client_db::key_t& key)
+ {
+ /**
+ * VPP provides no dump for ra config
+ */
+ }
+
+ /**
+ * 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;
+
+ /**
+ * Enqueue commands to the VPP for the update
+ */
+ void update(const interface_ip6_nd& obj)
+ {
+ if (!m_config) {
+ HW::enqueue(new config_cmd(m_config, m_itf->handle(), m_cls));
+ }
+ }
+
+ void sweep()
+ {
+ if (m_config) {
+ HW::enqueue(new unconfig_cmd(m_config, m_itf->handle(), m_cls));
+ }
+ HW::write();
+ }
+
+ /**
+ * Replay the objects state to HW
+ */
+ void replay(void)
+ {
+ if (m_config) {
+ HW::enqueue(new config_cmd(m_config, m_itf->handle(), m_cls));
+ }
+ }
+
+ /**
+ * Find or add the singular instance in the DB
+ */
+ static std::shared_ptr<interface_ip6_nd> find_or_add(
+ const interface_ip6_nd& temp)
+ {
+ return (m_db.find_or_add(temp.m_itf->key(), temp));
+ }
+
+ /*
+ * It's the VPPHW class that updates the objects in HW
+ */
+ friend class OM;
+
+ /**
+ * It's the singular_db class that calls replay()
+ */
+ friend class singular_db<key_t, interface_ip6_nd>;
+
+ const std::shared_ptr<interface> m_itf;
+
+ const class_t m_cls;
+
+ const key_t m_key;
+
+ /**
+ * HW configuration for the binding. The bool representing the
+ * do/don't bind.
+ */
+ HW::item<bool> m_config;
+
+ /**
+ * A map of all interface ip6 nd keyed against a combination of the
+ * interface and subnet's keys.
+ */
+ static singular_db<key_t, interface_ip6_nd> m_db;
+};
+
+/**
+ * Typedef the ip6nd_ra_config
+ */
+typedef interface_ip6_nd<ra_config, vapi::Sw_interface_ip6nd_ra_config>
+ ip6nd_ra_config;
+
+/**
+ * Typedef the ip6nd_ra_prefix
+ */
+typedef interface_ip6_nd<ra_prefix, vapi::Sw_interface_ip6nd_ra_prefix>
+ ip6nd_ra_prefix;
+
+/**
+ * Definition of the static singular_db for ACL Lists
+ */
+template <typename CLASS, typename CMD>
+singular_db<typename interface_ip6_nd<CLASS, CMD>::key_t,
+ interface_ip6_nd<CLASS, CMD>>
+ interface_ip6_nd<CLASS, CMD>::m_db;
+
+template <typename CLASS, typename CMD>
+typename interface_ip6_nd<CLASS, CMD>::event_handler
+ interface_ip6_nd<CLASS, CMD>::m_evh;
+};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "mozilla")
+ * End:
+ */
+
+#endif