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Diffstat (limited to 'extras/vom/vom/acl_list.hpp')
-rw-r--r-- | extras/vom/vom/acl_list.hpp | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/extras/vom/vom/acl_list.hpp b/extras/vom/vom/acl_list.hpp new file mode 100644 index 00000000000..eff5e1c5a52 --- /dev/null +++ b/extras/vom/vom/acl_list.hpp @@ -0,0 +1,307 @@ +/* + * 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_LIST_H__ +#define __VOM_ACL_LIST_H__ + +#include <set> + +#include "vom/acl_l2_rule.hpp" +#include "vom/acl_l3_rule.hpp" +#include "vom/acl_types.hpp" +#include "vom/hw.hpp" +#include "vom/inspect.hpp" +#include "vom/om.hpp" +#include "vom/singular_db.hpp" + +namespace VOM { +namespace ACL { +/** + * An ACL list comprises a set of match actions rules to be applied to + * packets. + * A list is bound to a given interface. + */ +template <typename RULE> +class list : public object_base +{ +public: + /** + * The KEY can be used to uniquely identify the ACL. + * (other choices for keys, like the summation of the properties + * of the rules, are rather too cumbersome to use + */ + typedef std::string key_t; + + /** + * The rule container type + */ + typedef std::multiset<RULE> rules_t; + + /** + * Construct a new object matching the desried state + */ + list(const key_t& key) + : m_hdl(handle_t::INVALID) + , m_key(key) + { + } + + list(const handle_t& hdl, const key_t& key) + : m_hdl(hdl) + , m_key(key) + { + } + + list(const key_t& key, const rules_t& rules) + : m_hdl(handle_t::INVALID) + , m_key(key) + , m_rules(rules) + { + } + + /** + * Copy Constructor + */ + list(const list& o) + : m_hdl(o.m_hdl) + , m_key(o.m_key) + , m_rules(o.m_rules) + { + } + + /** + * Destructor + */ + ~list() + { + sweep(); + m_db.release(m_key, this); + } + + /** + * Return the 'sigular instance' of the ACL that matches this object + */ + std::shared_ptr<list> singular() const { return find_or_add(*this); } + + /** + * Dump all ACLs into the stream provided + */ + static void dump(std::ostream& os) { m_db.dump(os); } + + /** + * convert to string format for debug purposes + */ + std::string to_string() const + { + std::ostringstream s; + s << "acl-list:[" << m_key << " " << m_hdl.to_string() << " rules:["; + + for (auto rule : m_rules) { + s << rule.to_string() << " "; + } + + s << "]]"; + + return (s.str()); + } + + /** + * Insert priority sorted a rule into the list + */ + void insert(const RULE& rule) { m_rules.insert(rule); } + + /** + * Remove a rule from the list + */ + void remove(const RULE& rule) { m_rules.erase(rule); } + + /** + * Return the VPP assign handle + */ + const handle_t& handle() const { return (singular()->handle_i()); } + + static std::shared_ptr<list> find(const handle_t& handle) + { + return (m_hdl_db[handle].lock()); + } + + static std::shared_ptr<list> find(const key_t& key) + { + return (m_db.find(key)); + } + + static void add(const key_t& key, const HW::item<handle_t>& item) + { + std::shared_ptr<list> sp = find(key); + + if (sp && item) { + m_hdl_db[item.data()] = sp; + } + } + + static void remove(const HW::item<handle_t>& item) + { + m_hdl_db.erase(item.data()); + } + + const key_t& key() const { return m_key; } + + const rules_t& rules() const { return m_rules; } + + /** + * Comparison operator - for UT + */ + bool operator==(const list& l) const + { + return (key() == l.key() && rules() == l.rules()); + } + +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() { m_db.replay(); } + + /** + * Show the object in the Singular DB + */ + void show(std::ostream& os); + + /** + * Get the sortable Id of the listener + */ + dependency_t order() const { return (dependency_t::ACL); } + }; + + /** + * event_handler to register with OM + */ + static event_handler m_evh; + + /** + * Enqueue commands to the VPP command Q for the update + */ + void update(const list& obj); + + /** + * HW assigned handle + */ + HW::item<handle_t> m_hdl; + + /** + * Find or add the sigular instance in the DB + */ + static std::shared_ptr<list> find_or_add(const list& temp) + { + return (m_db.find_or_add(temp.key(), temp)); + } + + /** + * return the acl-list's handle in the singular instance + */ + const handle_t& handle_i() const { return (m_hdl.data()); } + + /* + * It's the VOM::OM class that updates call update + */ + friend class VOM::OM; + + /** + * It's the VOM::singular_db class that calls replay() + */ + friend class singular_db<key_t, list>; + + /** + * Sweep/reap the object if still stale + */ + void sweep(void); + + /** + * Replay the objects state to HW + */ + void replay(void); + + /** + * A map of all ACL's against the client's key + */ + static singular_db<key_t, list> m_db; + + /** + * A map of all ACLs keyed against VPP's handle + */ + static std::map<handle_t, std::weak_ptr<list>> m_hdl_db; + + /** + * The Key is a user defined identifer for this ACL + */ + const key_t m_key; + + /** + * A sorted list of the rules + */ + rules_t m_rules; +}; + +/** + * Typedef the L3 ACL type + */ +typedef list<l3_rule> l3_list; + +/** + * Typedef the L2 ACL type + */ +typedef list<l2_rule> l2_list; + +/** + * Definition of the static singular_db for ACL Lists + */ +template <typename RULE> +singular_db<typename ACL::list<RULE>::key_t, ACL::list<RULE>> list<RULE>::m_db; + +/** + * Definition of the static per-handle DB for ACL Lists + */ +template <typename RULE> +std::map<handle_t, std::weak_ptr<ACL::list<RULE>>> list<RULE>::m_hdl_db; + +template <typename RULE> +typename ACL::list<RULE>::event_handler list<RULE>::m_evh; +}; +}; + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "mozilla") + * End: + */ + +#endif |