aboutsummaryrefslogtreecommitdiffstats
path: root/src/vpp-api/vom/route.hpp
blob: 2fb855a13eb297701a24e2441037de20dd5fd0fa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
/*
 * 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_ROUTE_H__
#define __VOM_ROUTE_H__

#include "vom/interface.hpp"
#include "vom/prefix.hpp"
#include "vom/route_domain.hpp"
#include "vom/singular_db.hpp"

namespace VOM {
/**
 * Types belonging to Routing
 */
namespace route {
/**
 * A path for IP or MPLS routes
 */
class path
{
public:
  /**
   * Special path types
   */
  class special_t : public enum_base<special_t>
  {
  public:
    /**
     * A standard path type. this includes path types
     * that use the next-hop and interface
     */
    const static special_t STANDARD;

    /**
     * A local/for-us/recieve
     */
    const static special_t LOCAL;

    /**
     * drop path
     */
    const static special_t DROP;

    /**
     * a path will return ICMP unreachables
     */
    const static special_t UNREACH;

    /**
     * a path will return ICMP prohibit
     */
    const static special_t PROHIBIT;

  private:
    /**
     * Private constructor taking the value and the string name
     */
    special_t(int v, const std::string& s);
  };

  /**
   * constructor for special paths
   */
  path(special_t special);

  /**
   * Constructor for standard non-recursive paths
   */
  path(const boost::asio::ip::address& nh,
       const interface& interface,
       uint8_t weight = 1,
       uint8_t preference = 0);

  /**
   * Constructor for standard recursive paths
   */
  path(const route_domain& rd,
       const boost::asio::ip::address& nh,
       uint8_t weight = 1,
       uint8_t preference = 0);

  /**
   * Constructor for DVR paths or attached paths.
   */
  path(const interface& interface,
       const nh_proto_t& proto,
       uint8_t weight = 1,
       uint8_t preference = 0);

  /**
   * Copy Constructor
   */
  path(const path& p);

  /**
   * Destructor
   */
  ~path();

  /**
   * comparison operator
   */
  bool operator==(const path& p) const;

  /**
   * Less than operator for set insertion
   */
  bool operator<(const path& p) const;

  /**
   * convert to string format for debug purposes
   */
  std::string to_string() const;

  /**
   * Getters
   */
  special_t type() const;
  nh_proto_t nh_proto() const;
  const boost::asio::ip::address& nh() const;
  std::shared_ptr<route_domain> rd() const;
  std::shared_ptr<interface> itf() const;
  uint8_t weight() const;
  uint8_t preference() const;

private:
  /**
   * The special path tpye
   */
  special_t m_type;

  /**
   * The next-hop protocol
   */
  nh_proto_t m_nh_proto;

  /**
   * The next-hop
   */
  boost::asio::ip::address m_nh;

  /**
   * For recursive routes, this is the table in which the
   * the next-hop exists.
   */
  std::shared_ptr<route_domain> m_rd;

  /**
   * The next-hop interface [if present].
   */
  std::shared_ptr<interface> m_interface;

  /**
   * UCMP weight
   */
  uint8_t m_weight;

  /**
   * Path preference
   */
  uint8_t m_preference;
};

/**
 * A path-list is a set of paths
 */
typedef std::set<path> path_list_t;

/**
 * ostream output for iterator
 */
std::ostream& operator<<(std::ostream& os, const path_list_t& path_list);

/**
 * A IP route
 */
class ip_route : public object_base
{
public:
  /**
   * The key for a route
   */
  typedef std::pair<route::table_id_t, prefix_t> key_t;

  /**
   * Construct a route in the default table
   */
  ip_route(const prefix_t& prefix);

  /**
   * Construct a route with a path
   */
  ip_route(const prefix_t& prefix, const path& p);

  /**
   * Copy Construct
   */
  ip_route(const ip_route& r);

  /**
   * Construct a route in the given route domain
   */
  ip_route(const route_domain& rd, const prefix_t& prefix);

  /**
   * Construct a route in the given route domain with a path
   */
  ip_route(const route_domain& rd, const prefix_t& prefix, const path& p);

  /**
   * Destructor
   */
  ~ip_route();

  /**
   * Get the route's key
   */
  const key_t key() const;

  /**
   * Comparison operator
   */
  bool operator==(const ip_route& i) const;

  /**
   * Return the matching 'singular instance'
   */
  std::shared_ptr<ip_route> singular() const;

  /**
   * Add a path.
   */
  void add(const path& path);

  /**
   * remove a path.
   */
  void remove(const path& path);

  /**
   * Find the instnace of the route domain in the OM
   */
  static std::shared_ptr<ip_route> find(const ip_route& temp);

  /**
   * Dump all route-doamin into the stream provided
   */
  static void dump(std::ostream& os);

  /**
   * replay the object to create it in hardware
   */
  void replay(void);

  /**
   * Convert to string for debugging
   */
  std::string to_string() const;

  /**
   * Return the matching 'singular instance'
   */
  static std::shared_ptr<ip_route> find(const key_t& k);

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;

  /**
   * Find or add the instnace of the route domain in the OM
   */
  static std::shared_ptr<ip_route> find_or_add(const ip_route& temp);

  /*
   * It's the OM class that updates the objects in HW
   */
  friend class VOM::OM;

  /**
   * It's the singular_db class that calls replay()
   */
  friend class singular_db<key_t, ip_route>;

  /**
   * Commit the acculmulated changes into VPP. i.e. to a 'HW" write.
   */
  void update(const ip_route& obj);

  /**
   * Sweep/reap the object if still stale
   */
  void sweep(void);

  /**
   * HW configuration for the result of creating the route
   */
  HW::item<bool> m_hw;

  /**
   * The route domain the route is in.
   */
  std::shared_ptr<route_domain> m_rd;

  /**
   * The prefix to match
   */
  prefix_t m_prefix;

  /**
   * The set of paths
   */
  path_list_t m_paths;

  /**
   * A map of all routes
   */
  static singular_db<key_t, ip_route> m_db;
};

std::ostream& operator<<(std::ostream& os, const ip_route::key_t& key);
};
};

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "mozilla")
 * End:
 */

#endif