aboutsummaryrefslogtreecommitdiffstats
path: root/src/vpp-api/vom/interface.hpp
blob: f6708b301760f7e23c499e780a20da45a65e9779 (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
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
/*
 * 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_H__
#define __VOM_INTERFACE_H__

#include "vom/enum_base.hpp"
#include "vom/hw.hpp"
#include "vom/inspect.hpp"
#include "vom/object_base.hpp"
#include "vom/om.hpp"
#include "vom/prefix.hpp"
#include "vom/route_domain.hpp"
#include "vom/rpc_cmd.hpp"
#include "vom/singular_db.hpp"

namespace VOM {
/**
 * Forward declaration of the stats and events command
 */
namespace interface_cmds {
class stats_enable_cmd;
class events_cmd;
};

/**
 * A representation of an interface in VPP
 */
class interface : public object_base
{
public:
  struct stats_type_t : public enum_base<stats_type_t>
  {
    const static stats_type_t DETAILED;
    const static stats_type_t NORMAL;

  private:
    stats_type_t(int v, const std::string& s);
  };

  /**
   * The key for interface's key
   */
  typedef std::string key_t;

  /**
   * The iterator type
   */
  typedef singular_db<const std::string, interface>::const_iterator
    const_iterator_t;

  /**
   * An interface type
   */
  struct type_t : enum_base<type_t>
  {
    /**
     * Unknown type
     */
    const static type_t UNKNOWN;
    /**
     * A brideged Virtual interface (aka SVI or IRB)
     */
    const static type_t BVI;
    /**
     * VXLAN interface
     */
    const static type_t VXLAN;
    /**
     * Ethernet interface type
     */
    const static type_t ETHERNET;
    /**
     * AF-Packet interface type
     */
    const static type_t AFPACKET;
    /**
     * loopback interface type
     */
    const static type_t LOOPBACK;
    /**
     * Local interface type (specific to VPP)
     */
    const static type_t LOCAL;
    /**
     * TAP interface type
     */
    const static type_t TAP;

    /**
     * vhost-user interface type
     */
    const static type_t VHOST;

    /**
     * bond interface type
     */
    const static type_t BOND;

    /**
     * Convert VPP's name of the interface to a type
     */
    static type_t from_string(const std::string& str);

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

  /**
   * The admin state of the interface
   */
  struct admin_state_t : enum_base<admin_state_t>
  {
    /**
     * Admin DOWN state
     */
    const static admin_state_t DOWN;
    /**
     * Admin UP state
     */
    const static admin_state_t UP;

    /**
     * Convert VPP's numerical value to enum type
     */
    static admin_state_t from_int(uint8_t val);

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

  /**
   * The oper state of the interface
   */
  struct oper_state_t : enum_base<oper_state_t>
  {
    /**
     * Operational DOWN state
     */
    const static oper_state_t DOWN;
    /**
     * Operational UP state
     */
    const static oper_state_t UP;

    /**
     * Convert VPP's numerical value to enum type
     */
    static oper_state_t from_int(uint8_t val);

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

  /**
   * Construct a new object matching the desried state
   */
  interface(const std::string& name,
            type_t type,
            admin_state_t state,
            const std::string& tag = "");
  /**
   * Construct a new object matching the desried state mapped
   * to a specific route_domain
   */
  interface(const std::string& name,
            type_t type,
            admin_state_t state,
            const route_domain& rd,
            const std::string& tag = "");
  /**
   * Destructor
   */
  virtual ~interface();

  /**
   * Copy Constructor
   */
  interface(const interface& o);

  static const_iterator_t cbegin();
  static const_iterator_t cend();

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

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

  /**
   * Return VPP's handle to this object
   */
  const handle_t& handle() const;

  /**
   * Return the interface type
   */
  const type_t& type() const;

  /**
   * Return the interface type
   */
  const std::string& name() const;

  /**
   * Return the interface type
   */
  const key_t& key() const;

  /**
   * Return the L2 Address
   */
  const l2_address_t& l2_address() const;

  /**
   * Set the admin state of the interface
   */
  void set(const admin_state_t& state);

  /**
   * Set the L2 Address
   */
  void set(const l2_address_t& addr);

  /**
   * Set the operational state of the interface, as reported by VPP
   */
  void set(const oper_state_t& state);

  /**
   * Set the tag to the interface
   */
  void set(const std::string& tag);

  /**
   * Comparison operator - only used for UT
   */
  virtual bool operator==(const interface& i) const;

  /**
   * A base class for interface Create commands
   */
  template <typename MSG>
  class create_cmd : public rpc_cmd<HW::item<handle_t>, HW::item<handle_t>, MSG>
  {
  public:
    create_cmd(HW::item<handle_t>& item, const std::string& name)
      : rpc_cmd<HW::item<handle_t>, HW::item<handle_t>, MSG>(item)
      , m_name(name)
    {
    }

    /**
     * Destructor
     */
    virtual ~create_cmd() = default;

    /**
     * Comparison operator - only used for UT
     */
    virtual bool operator==(const create_cmd& o) const
    {
      return (m_name == o.m_name);
    }

    /**
     * Indicate the succeeded, when the HW Q is disabled.
     */
    void succeeded()
    {
      rpc_cmd<HW::item<handle_t>, HW::item<handle_t>, MSG>::succeeded();
      interface::add(m_name, this->item());
    }

    /**
     * add the created interface to the DB
     */
    void insert_interface() { interface::add(m_name, this->item()); }

    virtual vapi_error_e operator()(MSG& reply)
    {
      int sw_if_index = reply.get_response().get_payload().sw_if_index;
      int retval = reply.get_response().get_payload().retval;

      VOM_LOG(log_level_t::DEBUG) << this->to_string() << " " << retval;

      rc_t rc = rc_t::from_vpp_retval(retval);
      handle_t handle = handle_t::INVALID;

      if (rc_t::OK == rc) {
        handle = sw_if_index;
      }

      HW::item<handle_t> res(handle, rc);

      this->fulfill(res);

      return (VAPI_OK);
    }

  protected:
    /**
     * The name of the interface to be created
     */
    const std::string& m_name;
  };

  /**
   * Base class for intterface Delete commands
   */
  template <typename MSG>
  class delete_cmd : public rpc_cmd<HW::item<handle_t>, HW::item<handle_t>, MSG>
  {
  public:
    delete_cmd(HW::item<handle_t>& item, const std::string& name)
      : rpc_cmd<HW::item<handle_t>, HW::item<handle_t>, MSG>(item)
      , m_name(name)
    {
    }

    delete_cmd(HW::item<handle_t>& item)
      : rpc_cmd<HW::item<handle_t>, HW::item<handle_t>, MSG>(item)
      , m_name()
    {
    }

    /**
     * Destructor
     */
    virtual ~delete_cmd() = default;

    /**
     * Comparison operator - only used for UT
     */
    virtual bool operator==(const delete_cmd& o) const
    {
      return (this->m_hw_item == o.m_hw_item);
    }

    /**
     * Indicate the succeeded, when the HW Q is disabled.
     */
    void succeeded() {}

    /**
     * remove the deleted interface from the DB
     */
    void remove_interface() { interface::remove(this->item()); }

  protected:
    /**
     * The name of the interface to be created
     */
    const std::string m_name;
  };

  /**
   * A class that listens to interface Events
   */
  class event_listener
  {
  public:
    /**
     * Default Constructor
     */
    event_listener();

    /**
     * Virtual function called on the listener when the command has data
     * ready to process
     */
    virtual void handle_interface_event(interface_cmds::events_cmd* cmd) = 0;

    /**
     * Return the HW::item representing the status
     */
    HW::item<bool>& status();

  protected:
    /**
     * The status of the subscription
     */
    HW::item<bool> m_status;
  };

  /**
   * A class that listens to interface Stats
   */
  class stat_listener
  {
  public:
    /**
     * Default Constructor
     */
    stat_listener();

    /**
     * Virtual function called on the listener when the command has data
     * ready to process
     */
    virtual void handle_interface_stat(
      interface_cmds::stats_enable_cmd* cmd) = 0;

    /**
     * Return the HW::item representing the status
     */
    HW::item<bool>& status();

  protected:
    /**
     * The status of the subscription
     */
    HW::item<bool> m_status;
  };

  /**
   * The the singular instance of the interface in the DB by handle
   */
  static std::shared_ptr<interface> find(const handle_t& h);

  /**
   * The the singular instance of the interface in the DB by key
   */
  static std::shared_ptr<interface> find(const key_t& k);

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

  /**
   * Enable stats for this interface
   */
  void enable_stats(stat_listener& el,
                    const stats_type_t& st = stats_type_t::NORMAL);

protected:
  /**
   * Set the handle of an interface object. Only called by the interface
   * factory during the populate
   */
  void set(const handle_t& handle);
  friend class interface_factory;

  /**
   * The SW interface handle VPP has asigned to the interface
   */
  HW::item<handle_t> m_hdl;

  /**
   * Return the matching 'singular' of the interface
   */
  virtual std::shared_ptr<interface> singular_i() const;

  /**
   * release/remove an interface form the singular store
   */
  void release();

  /**
   * Virtual functions to construct an interface create commands.
   * Overridden in derived classes like the sub_interface
   */
  virtual std::queue<cmd*>& mk_create_cmd(std::queue<cmd*>& cmds);

  /**
   * Virtual functions to construct an interface delete commands.
   * Overridden in derived classes like the sub_interface
   */
  virtual std::queue<cmd*>& mk_delete_cmd(std::queue<cmd*>& cmds);

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

  /**
   * A map of all interfaces key against the interface's name
   */
  static singular_db<key_t, interface> m_db;

  /**
   * Add an interface to the DB keyed on handle
   */
  static void add(const key_t& name, const HW::item<handle_t>& item);

  /**
   * remove an interface from the DB keyed on handle
   */
  static void remove(const HW::item<handle_t>& item);

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;
  };

  static event_handler m_evh;

  /**
   * enable the interface stats in the singular instance
   */
  void enable_stats_i(stat_listener& el, const stats_type_t& st);

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

  /*
   * return the interface's handle in the singular instance
   */
  const handle_t& handle_i() const;

  /*
   * It's the OM class that calls singular()
   */
  friend class OM;

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

  /**
   * The interfaces name
   */
  const std::string m_name;

  /**
   * The interface type. clearly this cannot be changed
   * once the interface has been created.
   */
  const type_t m_type;

  /**
   * shared pointer to the routeDoamin the interface is in.
   * NULL is not mapped  - i.e. in the default table
   */
  std::shared_ptr<route_domain> m_rd;

  /**
   * shared pointer to the stats object for this interface.
   */
  std::shared_ptr<interface_cmds::stats_enable_cmd> m_stats;

  /**
   * The state of the interface
   */
  HW::item<admin_state_t> m_state;

  /**
   * HW state of the VPP table mapping
   */
  HW::item<route::table_id_t> m_table_id;

  /**
   * HW state of the L2 address
   */
  HW::item<l2_address_t> m_l2_address;

  /**
   * The state of the detailed stats collection
   */
  HW::item<stats_type_t> m_stats_type;

  /**
   * Operational state of the interface
   */
  oper_state_t m_oper;

  /**
   * tag of the interface
   */
  std::string m_tag;

  /**
   * A map of all interfaces keyed against VPP's handle
   */
  static std::map<handle_t, std::weak_ptr<interface>> m_hdl_db;

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

  /**
   * Create commands are firends so they can add interfaces to the
   * handle store.
   */
  template <typename MSG>
  friend class create_cmd;

  /**
   * Create commands are firends so they can remove interfaces from the
   * handle store.
   */
  template <typename MSG>
  friend class delete_cmd;
};
};
/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "mozilla")
 * End:
 */
#endif