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Vector Packet Processing
interface_ip6_nd.hpp
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1 /*
2  * Copyright (c) 2017 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef __VOM_INTERFACE_IP6_ND_H__
17 #define __VOM_INTERFACE_IP6_ND_H__
18 
19 #include "vom/dump_cmd.hpp"
20 #include "vom/hw.hpp"
21 #include "vom/inspect.hpp"
22 #include "vom/interface.hpp"
23 #include "vom/object_base.hpp"
24 #include "vom/om.hpp"
25 #include "vom/ra_config.hpp"
26 #include "vom/ra_prefix.hpp"
27 #include "vom/rpc_cmd.hpp"
28 #include "vom/singular_db.hpp"
29 
30 namespace VOM {
31 /**
32  * A representation of L3 configuration on an interface
33  */
34 template <typename CLASS, typename CMD>
36 {
37 public:
38  typedef CLASS class_t;
39  /**
40  * Construct a new object matching the desried state
41  */
42  interface_ip6_nd(const interface& itf, const class_t cls)
43  : m_itf(itf.singular())
44  , m_cls(cls)
45  , m_config(true)
46  {
47  }
48 
49  /**
50  * Copy Constructor
51  */
53  : m_itf(o.m_itf)
54  , m_cls(o.m_cls)
55  , m_config(o.m_config)
56  {
57  }
58 
59  /**
60  * Destructor
61  */
63  {
64  sweep();
65  m_db.release(m_itf->key(), this);
66  }
67 
68  /**
69  * Return the 'singular instance' of the interface ip6nd that matches
70  * this object
71  */
72  std::shared_ptr<interface_ip6_nd> singular() const
73  {
74  return find_or_add(*this);
75  }
76 
77  /**
78  * convert to string format for debug purposes
79  */
80  std::string to_string() const
81  {
82  std::ostringstream s;
83  s << "interface-ip6-nd:["
84  << " itf:" << m_itf->to_string() << " " << m_cls.to_string() << " "
85  << m_config.to_string() << "]";
86 
87  return (s.str());
88  }
89 
90  /**
91  * Dump all config into the stream provided
92  */
93  static void dump(std::ostream& os) { m_db.dump(os); }
94 
95  /**
96  * The key type for interface ip6 nd
97  */
99 
100  /**
101  * Find an singular instance in the DB for the interface passed
102  */
103  static std::shared_ptr<interface_ip6_nd> find(const interface& i)
104  {
105  /*
106  * Loop throught the entire map looking for matching interface.
107  * not the most efficient algorithm, but it will do for now. The
108  * number of ra configs is low.
109  */
110  std::deque<std::shared_ptr<interface_ip6_nd>> rac;
111 
112  auto it = m_db.cbegin();
113 
114  while (it != m_db.cend()) {
115  /*
116  * The key in the DB is a pair of the interface's name.
117  * If the keys match, save the ra-config
118  */
119  auto key = it->first;
120 
121  if (i.key() == key.first) {
122  rac.push_back(it->second.lock());
123  }
124 
125  ++it;
126  }
127 
128  return (rac);
129  }
130 
131  /**
132  * A functor class that binds the ra config to the interface
133  */
134  class config_cmd : public rpc_cmd<HW::item<bool>, rc_t, CMD>
135  {
136  public:
137  /**
138  * Constructor
139  */
140  config_cmd(HW::item<bool>& item, const handle_t& itf, const class_t& cls)
141  : rpc_cmd<HW::item<bool>, rc_t, CMD>(item)
142  , m_itf(itf)
143  , m_cls(cls)
144  {
145  }
146 
147  /**
148  * Issue the command to VPP/HW
149  */
150  rc_t issue(connection& con);
151 
152  /**
153  * convert to string format for debug purposes
154  */
155  std::string to_string() const
156  {
157  std::ostringstream s;
158  s << "interface-ip6-nd: " << this->item().to_string()
159  << " itf:" << m_itf.to_string() << " " << m_cls.to_string();
160 
161  return (s.str());
162  }
163 
164  /**
165  * Comparison operator - only used for UT
166  */
167  bool operator==(const config_cmd& other) const
168  {
169  return ((m_itf == other.m_itf) && (m_cls == other.m_cls));
170  }
171 
172  private:
173  /**
174  * Reference to the interface to bind to
175  */
176  const handle_t& m_itf;
177 
178  /**
179  * Reference to the config class
180  */
181  const class_t& m_cls;
182  };
183 
184  /**
185  * A cmd class that Unbinds L3 Config from an interface
186  */
187  class unconfig_cmd : public rpc_cmd<HW::item<bool>, rc_t, CMD>
188  {
189  public:
190  /**
191  * Constructor
192  */
193  unconfig_cmd(HW::item<bool>& item, const handle_t& itf, const class_t& cls)
194  : rpc_cmd<HW::item<bool>, rc_t, CMD>(item)
195  , m_itf(itf)
196  , m_cls(cls)
197  {
198  }
199 
200  /**
201  * Issue the command to VPP/HW
202  */
203  rc_t issue(connection& con);
204 
205  /**
206  * convert to string format for debug purposes
207  */
208  std::string to_string() const
209  {
210  std::ostringstream s;
211  s << "interface-ip6-nd: " << this->item().to_string()
212  << " itf:" << m_itf.to_string() << " " << m_cls.to_string();
213 
214  return (s.str());
215  }
216 
217  /**
218  * Comparison operator - only used for UT
219  */
220  bool operator==(const unconfig_cmd& other) const
221  {
222  return ((m_itf == other.m_itf) && (m_cls == other.m_cls));
223  }
224 
225  private:
226  /**
227  * Reference to the interface to unbind fomr
228  */
229  const handle_t& m_itf;
230 
231  /**
232  * Reference to the config class to undo configurations
233  */
234  const class_t& m_cls;
235  };
236 
237 private:
238  /**
239  * Class definition for listeners to OM events
240  */
241  class event_handler : public OM::listener, public inspect::command_handler
242  {
243  public:
244  event_handler()
245  {
246  OM::register_listener(this);
247  inspect::register_handler({ "ip6_nd " }, "interface ip6 nd", this);
248  }
249 
250  virtual ~event_handler() = default;
251 
252  /**
253  * Handle a populate event
254  */
255  void handle_populate(const client_db::key_t& key)
256  {
257  /**
258  * VPP provides no dump for ra config
259  */
260  }
261 
262  /**
263  * Handle a replay event
264  */
265  void handle_replay() { m_db.replay(); }
266 
267  /**
268  * Show the object in the Singular DB
269  */
270  void show(std::ostream& os) { m_db.dump(os); }
271 
272  /**
273  * Get the sortable Id of the listener
274  */
275  dependency_t order() const { return (dependency_t::BINDING); }
276  };
277 
278  /**
279  * event_handler to register with OM
280  */
281  static event_handler m_evh;
282 
283  /**
284  * Enqueue commands to the VPP for the update
285  */
286  void update(const interface_ip6_nd& obj)
287  {
288  if (!m_config) {
289  HW::enqueue(new config_cmd(m_config, m_itf->handle(), m_cls));
290  }
291  }
292 
293  void sweep()
294  {
295  if (m_config) {
296  HW::enqueue(new unconfig_cmd(m_config, m_itf->handle(), m_cls));
297  }
298  HW::write();
299  }
300 
301  /**
302  * Replay the objects state to HW
303  */
304  void replay(void)
305  {
306  if (m_config) {
307  HW::enqueue(new config_cmd(m_config, m_itf->handle(), m_cls));
308  }
309  }
310 
311  /**
312  * Find or add the singular instance in the DB
313  */
314  static std::shared_ptr<interface_ip6_nd> find_or_add(
315  const interface_ip6_nd& temp)
316  {
317  return (m_db.find_or_add(temp.m_itf->key(), temp));
318  }
319 
320  /*
321  * It's the VPPHW class that updates the objects in HW
322  */
323  friend class OM;
324 
325  /**
326  * It's the singular_db class that calls replay()
327  */
328  friend class singular_db<key_t, interface_ip6_nd>;
329 
330  const std::shared_ptr<interface> m_itf;
331 
332  const class_t m_cls;
333 
334  const key_t m_key;
335 
336  /**
337  * HW configuration for the binding. The bool representing the
338  * do/don't bind.
339  */
340  HW::item<bool> m_config;
341 
342  /**
343  * A map of all interface ip6 nd keyed against a combination of the
344  * interface and subnet's keys.
345  */
347 };
348 
349 /**
350  * Typedef the ip6nd_ra_config
351  */
354 
355 /**
356  * Typedef the ip6nd_ra_prefix
357  */
360 
361 /**
362  * Definition of the static singular_db for ACL Lists
363  */
364 template <typename CLASS, typename CMD>
368 
369 template <typename CLASS, typename CMD>
372 };
373 
374 /*
375  * fd.io coding-style-patch-verification: ON
376  *
377  * Local Variables:
378  * eval: (c-set-style "mozilla")
379  * End:
380  */
381 
382 #endif
A representation of L3 configuration on an interface.
config_cmd(HW::item< bool > &item, const handle_t &itf, const class_t &cls)
Constructor.
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:337
interface_ip6_nd< ra_config, vapi::Sw_interface_ip6nd_ra_config > ip6nd_ra_config
Typedef the ip6nd_ra_config.
std::shared_ptr< interface_ip6_nd > singular() const
Return the &#39;singular instance&#39; of the interface ip6nd that matches this object.
const std::string key_t
In the opflex world each entity is known by a URI which can be converted into a string.
Definition: client_db.hpp:51
A functor class that binds the ra config to the interface.
Definition: hw.hpp:33
static void register_handler(const std::vector< std::string > &cmds, const std::string &help, command_handler *ch)
Register a command handler for inspection.
Definition: inspect.cpp:85
static void dump(std::ostream &os)
Dump all config into the stream provided.
static rc_t write()
Write/Execute all commands hitherto enqueued.
Definition: hw.cpp:225
Error codes that VPP will return during a HW write.
Definition: types.hpp:84
std::string to_string() const
convert to string format for debug purposes
static std::shared_ptr< interface_ip6_nd > find(const interface &i)
Find an singular instance in the DB for the interface passed.
std::string to_string() const
convert to string format for debug purposes
Definition: hw.hpp:160
rc_t issue(connection &con)
Issue the command to VPP/HW.
std::string to_string() const
convert to string format for debug purposes
Definition: types.cpp:68
bool operator==(const unconfig_cmd &other) const
Comparison operator - only used for UT.
A representation of the connection to VPP.
Definition: connection.hpp:33
interface_ip6_nd(const interface &itf, const class_t cls)
Construct a new object matching the desried state.
bool operator==(const config_cmd &other) const
Comparison operator - only used for UT.
HW::item< bool > & item()
return the HW item the command updates
Definition: rpc_cmd.hpp:64
A Database to store the unique &#39;singular&#39; instances of a single object type.
Definition: singular_db.hpp:32
A base class for all RPC commands to VPP.
Definition: rpc_cmd.hpp:38
std::string to_string() const
convert to string format for debug purposes
A representation of an interface in VPP.
Definition: interface.hpp:41
Class definition for listeners to OM events.
Definition: om.hpp:284
inspect command handler Handler
Definition: inspect.hpp:54
A type declaration of an interface handle in VPP.
Definition: types.hpp:164
interface_ip6_nd< ra_prefix, vapi::Sw_interface_ip6nd_ra_prefix > ip6nd_ra_prefix
Typedef the ip6nd_ra_prefix.
dependency_t
There needs to be a strict order in which object types are read from VPP (at boot time) and replayed ...
Definition: types.hpp:43
static void enqueue(cmd *f)
Enqueue A command for execution.
Definition: hw.cpp:189
The interface to writing objects into VPP OM.
Definition: om.hpp:140
unconfig_cmd(HW::item< bool > &item, const handle_t &itf, const class_t &cls)
Constructor.
A base class for all object_base in the VPP object_base-Model.
Definition: object_base.hpp:29
#define bool
Definition: radix.c:95
Then L2/objects that bind to interfaces, BD, ACLS, etc.
The VPP Object Model (VOM) library.
Definition: acl_binding.cpp:19
void show(char *chroot_path, int verbose)
Definition: svmtool.c:105
interface_ip6_nd(const interface_ip6_nd &o)
Copy Constructor.
std::string to_string() const
convert to string format for debug purposes
std::string key_t
The key for interface&#39;s key.
Definition: interface.hpp:47
static bool register_listener(listener *listener)
Register a listener of events.
Definition: om.cpp:124
~interface_ip6_nd()
Destructor.
const key_t & key() const
Return the interface type.
Definition: interface.cpp:236
A cmd class that Unbinds L3 Config from an interface.
interface::key_t key_t
The key type for interface ip6 nd.