aboutsummaryrefslogtreecommitdiffstats
path: root/src/vcl/vcl_bapi.c
blob: 077024ed2cf92f11c759a2e7a27cfc974afe8a94 (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
/*
 * Copyright (c) 2018-2019 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this
 * 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.
 */

#include <vcl/vcl_private.h>
#include <vlibmemory/api.h>
#include <vpp/api/vpe_msg_enum.h>

#define vl_typedefs		/* define message structures */
#include <vpp/api/vpe_all_api_h.h>
#undef vl_typedefs

/* declare message handlers for each api */

#define vl_endianfun		/* define message structures */
#include <vpp/api/vpe_all_api_h.h>
#undef vl_endianfun

/* instantiate all the print functions we know about */
#define vl_print(handle, ...)
#define vl_printfun
#include <vpp/api/vpe_all_api_h.h>
#undef vl_printfun

u8 *
format_api_error (u8 * s, va_list * args)
{
  i32 error = va_arg (*args, u32);
  uword *p;

  p = hash_get (vcm->error_string_by_error_number, -error);

  if (p)
    s = format (s, "%s (%d)", p[0], error);
  else
    s = format (s, "%d", error);
  return s;
}

static void
  vl_api_session_enable_disable_reply_t_handler
  (vl_api_session_enable_disable_reply_t * mp)
{
  if (mp->retval)
    {
      clib_warning ("VCL<%d>: session_enable_disable failed: %U", getpid (),
		    format_api_error, ntohl (mp->retval));
    }
  else
    vcm->app_state = STATE_APP_ENABLED;
}

static u64
vcl_vpp_worker_segment_handle (u32 wrk_index)
{
  return (VCL_INVALID_SEGMENT_HANDLE - wrk_index - 1);
}

static void
vl_api_app_attach_reply_t_handler (vl_api_app_attach_reply_t * mp)
{
  vcl_worker_t *wrk = vcl_worker_get (0);
  svm_msg_q_t *ctrl_mq;
  u64 segment_handle;
  int *fds = 0, i, rv;
  u32 n_fds = 0;
  char *segment_name = 0;

  if (mp->retval)
    {
      VERR ("attach failed: %U", format_api_error, ntohl (mp->retval));
      goto failed;
    }

  wrk->app_event_queue = uword_to_pointer (mp->app_mq, svm_msg_q_t *);
  ctrl_mq = uword_to_pointer (mp->vpp_ctrl_mq, svm_msg_q_t *);
  vec_validate (wrk->vpp_event_queues, mp->vpp_ctrl_mq_thread);
  wrk->vpp_event_queues[mp->vpp_ctrl_mq_thread] = ctrl_mq;
  vcm->ctrl_mq = wrk->ctrl_mq = ctrl_mq;
  segment_handle = clib_net_to_host_u64 (mp->segment_handle);
  if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
    {
      VERR ("invalid segment handle");
      goto failed;
    }

  if (mp->n_fds)
    {
      vec_validate (fds, mp->n_fds);
      if (vl_socket_client_recv_fd_msg2 (&wrk->bapi_sock_ctx, fds, mp->n_fds,
					 5))
	goto failed;

      if (mp->fd_flags & SESSION_FD_F_VPP_MQ_SEGMENT)
	if (vcl_segment_attach (vcl_vpp_worker_segment_handle (0),
				"vpp-mq-seg", SSVM_SEGMENT_MEMFD,
				fds[n_fds++]))
	  goto failed;

      if (mp->fd_flags & SESSION_FD_F_MEMFD_SEGMENT)
	{
	  segment_name = vl_api_from_api_to_new_c_string (&mp->segment_name);
	  rv =
	    vcl_segment_attach (segment_handle, segment_name,
				SSVM_SEGMENT_MEMFD, fds[n_fds++]);
	  vec_free (segment_name);
	  if (rv != 0)
	    goto failed;
	}


      if (mp->fd_flags & SESSION_FD_F_MQ_EVENTFD)
	{
	  svm_msg_q_set_consumer_eventfd (wrk->app_event_queue, fds[n_fds]);
	  vcl_mq_epoll_add_evfd (wrk, wrk->app_event_queue);
	  n_fds++;
	}

      vec_free (fds);
    }
  else
    {
      segment_name = vl_api_from_api_to_new_c_string (&mp->segment_name);
      rv =
	vcl_segment_attach (segment_handle, segment_name, SSVM_SEGMENT_SHM,
			    -1);
      vec_free (segment_name);
      if (rv != 0)
	goto failed;
    }

  vcm->app_index = clib_net_to_host_u32 (mp->app_index);
  vcm->app_state = STATE_APP_ATTACHED;
  return;

failed:
  vcm->app_state = STATE_APP_FAILED;
  for (i = clib_max (n_fds - 1, 0); i < vec_len (fds); i++)
    close (fds[i]);
  vec_free (fds);
}

static void
vl_api_app_worker_add_del_reply_t_handler (vl_api_app_worker_add_del_reply_t *
					   mp)
{
  int n_fds = 0, *fds = 0, i, rv;
  u64 segment_handle;
  vcl_worker_t *wrk;
  u32 wrk_index;
  char *segment_name = 0;

  if (mp->retval)
    {
      clib_warning ("VCL<%d>: add/del worker failed: %U", getpid (),
		    format_api_error, ntohl (mp->retval));
      goto failed;
    }

  if (!mp->is_add)
    return;

  wrk_index = mp->context;
  wrk = vcl_worker_get_if_valid (wrk_index);
  if (!wrk)
    return;

  wrk->vpp_wrk_index = clib_net_to_host_u32 (mp->wrk_index);
  wrk->app_event_queue = uword_to_pointer (mp->app_event_queue_address,
					   svm_msg_q_t *);
  wrk->ctrl_mq = vcm->ctrl_mq;

  segment_handle = clib_net_to_host_u64 (mp->segment_handle);
  if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
    {
      clib_warning ("invalid segment handle");
      goto failed;
    }

  if (mp->n_fds)
    {
      vec_validate (fds, mp->n_fds);
      if (vl_socket_client_recv_fd_msg2 (&wrk->bapi_sock_ctx, fds, mp->n_fds,
					 5))
	goto failed;

      if (mp->fd_flags & SESSION_FD_F_VPP_MQ_SEGMENT)
	if (vcl_segment_attach (vcl_vpp_worker_segment_handle (wrk_index),
				"vpp-worker-seg", SSVM_SEGMENT_MEMFD,
				fds[n_fds++]))
	  goto failed;

      if (mp->fd_flags & SESSION_FD_F_MEMFD_SEGMENT)
	{
	  segment_name = vl_api_from_api_to_new_c_string (&mp->segment_name);
	  rv =
	    vcl_segment_attach (segment_handle, segment_name,
				SSVM_SEGMENT_MEMFD, fds[n_fds++]);
	  vec_free (segment_name);
	  if (rv != 0)
	    goto failed;
	}

      if (mp->fd_flags & SESSION_FD_F_MQ_EVENTFD)
	{
	  svm_msg_q_set_consumer_eventfd (wrk->app_event_queue, fds[n_fds]);
	  vcl_mq_epoll_add_evfd (wrk, wrk->app_event_queue);
	  n_fds++;
	}

      vec_free (fds);
    }
  else
    {
      segment_name = vl_api_from_api_to_new_c_string (&mp->segment_name);
      rv =
	vcl_segment_attach (segment_handle, segment_name, SSVM_SEGMENT_SHM,
			    -1);
      vec_free (segment_name);
      if (rv != 0)
	goto failed;
    }
  vcm->app_state = STATE_APP_READY;
  VDBG (0, "worker %u vpp-worker %u added", wrk_index, wrk->vpp_wrk_index);
  return;

failed:
  vcm->app_state = STATE_APP_FAILED;
  for (i = clib_max (n_fds - 1, 0); i < vec_len (fds); i++)
    close (fds[i]);
  vec_free (fds);
}

static void
  vl_api_application_tls_cert_add_reply_t_handler
  (vl_api_application_tls_cert_add_reply_t * mp)
{
  if (mp->retval)
    VDBG (0, "add cert failed: %U", format_api_error, ntohl (mp->retval));
  vcm->app_state = STATE_APP_READY;
}

static void
  vl_api_application_tls_key_add_reply_t_handler
  (vl_api_application_tls_key_add_reply_t * mp)
{
  if (mp->retval)
    VDBG (0, "add key failed: %U", format_api_error, ntohl (mp->retval));
  vcm->app_state = STATE_APP_READY;
}

#define foreach_sock_msg                                        	\
_(SESSION_ENABLE_DISABLE_REPLY, session_enable_disable_reply)   	\
_(APP_ATTACH_REPLY, app_attach_reply)           			\
_(APPLICATION_TLS_CERT_ADD_REPLY, application_tls_cert_add_reply)  	\
_(APPLICATION_TLS_KEY_ADD_REPLY, application_tls_key_add_reply)  	\
_(APP_WORKER_ADD_DEL_REPLY, app_worker_add_del_reply)			\

void
vppcom_api_hookup (void)
{
#define _(N, n)                                                	\
    vl_msg_api_set_handlers(VL_API_##N, #n,                    	\
                           vl_api_##n##_t_handler,              \
                           vl_noop_handler,                     \
                           vl_api_##n##_t_endian,               \
                           vl_api_##n##_t_print,                \
                           sizeof(vl_api_##n##_t), 1);
  foreach_sock_msg;
#undef _
}

/*
 * VPP-API message functions
 */
void
vppcom_send_session_enable_disable (u8 is_enable)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  vl_api_session_enable_disable_t *bmp;
  bmp = vl_msg_api_alloc (sizeof (*bmp));
  memset (bmp, 0, sizeof (*bmp));

  bmp->_vl_msg_id = ntohs (VL_API_SESSION_ENABLE_DISABLE);
  bmp->client_index = wrk->my_client_index;
  bmp->context = htonl (0xfeedface);
  bmp->is_enable = is_enable;
  vl_msg_api_send_shmem (wrk->vl_input_queue, (u8 *) & bmp);
}

void
vppcom_app_send_attach (void)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  u8 tls_engine = CRYPTO_ENGINE_OPENSSL;
  vl_api_app_attach_t *bmp;
  u8 nsid_len = vec_len (vcm->cfg.namespace_id);
  u8 app_is_proxy = (vcm->cfg.app_proxy_transport_tcp ||
		     vcm->cfg.app_proxy_transport_udp);

  tls_engine = vcm->cfg.tls_engine ? vcm->cfg.tls_engine : tls_engine;

  bmp = vl_msg_api_alloc (sizeof (*bmp));
  memset (bmp, 0, sizeof (*bmp));

  bmp->_vl_msg_id = ntohs (VL_API_APP_ATTACH);
  bmp->client_index = wrk->my_client_index;
  bmp->context = htonl (0xfeedface);
  bmp->options[APP_OPTIONS_FLAGS] =
    APP_OPTIONS_FLAGS_ACCEPT_REDIRECT | APP_OPTIONS_FLAGS_ADD_SEGMENT |
    (vcm->cfg.app_scope_local ? APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE : 0) |
    (vcm->cfg.app_scope_global ? APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE : 0) |
    (app_is_proxy ? APP_OPTIONS_FLAGS_IS_PROXY : 0) |
    (vcm->cfg.use_mq_eventfd ? APP_OPTIONS_FLAGS_EVT_MQ_USE_EVENTFD : 0);
  bmp->options[APP_OPTIONS_PROXY_TRANSPORT] =
    (u64) ((vcm->cfg.app_proxy_transport_tcp ? 1 << TRANSPORT_PROTO_TCP : 0) |
	   (vcm->cfg.app_proxy_transport_udp ? 1 << TRANSPORT_PROTO_UDP : 0));
  bmp->options[APP_OPTIONS_SEGMENT_SIZE] = vcm->cfg.segment_size;
  bmp->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = vcm->cfg.add_segment_size;
  bmp->options[APP_OPTIONS_RX_FIFO_SIZE] = vcm->cfg.rx_fifo_size;
  bmp->options[APP_OPTIONS_TX_FIFO_SIZE] = vcm->cfg.tx_fifo_size;
  bmp->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] =
    vcm->cfg.preallocated_fifo_pairs;
  bmp->options[APP_OPTIONS_EVT_QUEUE_SIZE] = vcm->cfg.event_queue_size;
  bmp->options[APP_OPTIONS_TLS_ENGINE] = tls_engine;
  if (nsid_len)
    {
      vl_api_vec_to_api_string (vcm->cfg.namespace_id, &bmp->namespace_id);
      bmp->options[APP_OPTIONS_NAMESPACE_SECRET] = vcm->cfg.namespace_secret;
    }
  vl_msg_api_send_shmem (wrk->vl_input_queue, (u8 *) & bmp);
}

void
vppcom_app_send_detach (void)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  vl_api_application_detach_t *bmp;
  bmp = vl_msg_api_alloc (sizeof (*bmp));
  memset (bmp, 0, sizeof (*bmp));

  bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_DETACH);
  bmp->client_index = wrk->my_client_index;
  bmp->context = htonl (0xfeedface);
  vl_msg_api_send_shmem (wrk->vl_input_queue, (u8 *) & bmp);
}

void
vcl_send_app_worker_add_del (u8 is_add)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  vl_api_app_worker_add_del_t *mp;

  mp = vl_msg_api_alloc (sizeof (*mp));
  memset (mp, 0, sizeof (*mp));

  mp->_vl_msg_id = ntohs (VL_API_APP_WORKER_ADD_DEL);
  mp->client_index = wrk->my_client_index;
  mp->app_index = clib_host_to_net_u32 (vcm->app_index);
  mp->context = wrk->wrk_index;
  mp->is_add = is_add;
  if (!is_add)
    mp->wrk_index = clib_host_to_net_u32 (wrk->vpp_wrk_index);

  vl_msg_api_send_shmem (wrk->vl_input_queue, (u8 *) & mp);
}

void
vcl_send_child_worker_del (vcl_worker_t * child_wrk)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  vl_api_app_worker_add_del_t *mp;

  mp = vl_msg_api_alloc (sizeof (*mp));
  memset (mp, 0, sizeof (*mp));

  mp->_vl_msg_id = ntohs (VL_API_APP_WORKER_ADD_DEL);
  mp->client_index = wrk->my_client_index;
  mp->app_index = clib_host_to_net_u32 (vcm->app_index);
  mp->context = wrk->wrk_index;
  mp->is_add = 0;
  mp->wrk_index = clib_host_to_net_u32 (child_wrk->vpp_wrk_index);

  vl_msg_api_send_shmem (wrk->vl_input_queue, (u8 *) & mp);
}

void
vppcom_send_application_tls_cert_add (vcl_session_t * session, char *cert,
				      u32 cert_len)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  vl_api_application_tls_cert_add_t *cert_mp;

  cert_mp = vl_msg_api_alloc (sizeof (*cert_mp) + cert_len);
  clib_memset (cert_mp, 0, sizeof (*cert_mp));
  cert_mp->_vl_msg_id = ntohs (VL_API_APPLICATION_TLS_CERT_ADD);
  cert_mp->client_index = wrk->my_client_index;
  cert_mp->context = session->session_index;
  cert_mp->cert_len = clib_host_to_net_u16 (cert_len);
  clib_memcpy_fast (cert_mp->cert, cert, cert_len);
  vl_msg_api_send_shmem (wrk->vl_input_queue, (u8 *) & cert_mp);
}

void
vppcom_send_application_tls_key_add (vcl_session_t * session, char *key,
				     u32 key_len)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  vl_api_application_tls_key_add_t *key_mp;

  key_mp = vl_msg_api_alloc (sizeof (*key_mp) + key_len);
  clib_memset (key_mp, 0, sizeof (*key_mp));
  key_mp->_vl_msg_id = ntohs (VL_API_APPLICATION_TLS_KEY_ADD);
  key_mp->client_index = wrk->my_client_index;
  key_mp->context = session->session_index;
  key_mp->key_len = clib_host_to_net_u16 (key_len);
  clib_memcpy_fast (key_mp->key, key, key_len);
  vl_msg_api_send_shmem (wrk->vl_input_queue, (u8 *) & key_mp);
}

u32
vcl_max_nsid_len (void)
{
  vl_api_app_attach_t *mp;
  return (sizeof (mp->namespace_id) - 1);
}

void
vppcom_init_error_string_table (void)
{
  vcm->error_string_by_error_number = hash_create (0, sizeof (uword));

#define _(n, v, s) hash_set (vcm->error_string_by_error_number, -v, s);
  foreach_vnet_api_error;
#undef _

  hash_set (vcm->error_string_by_error_number, 99, "Misc");
}

int
vppcom_connect_to_vpp (char *app_name)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  vppcom_cfg_t *vcl_cfg = &vcm->cfg;
  api_main_t *am;

  vlibapi_set_main (&wrk->bapi_api_ctx);
  vlibapi_set_memory_client_main (&wrk->bapi_shm_ctx);
  vppcom_api_hookup ();

  if (vcl_cfg->vpp_api_socket_name)
    {
      if (vl_socket_client_connect2 (&wrk->bapi_sock_ctx,
				     (char *) vcl_cfg->vpp_api_socket_name,
				     app_name, 0 /* default rx/tx buffer */ ))
	{
	  VERR ("app (%s) socket connect failed!", app_name);
	  return VPPCOM_ECONNREFUSED;
	}

      if (vl_socket_client_init_shm2 (&wrk->bapi_sock_ctx, 0,
				      1 /* want_pthread */ ))
	{
	  VERR ("app (%s) init shm failed!", app_name);
	  return VPPCOM_ECONNREFUSED;
	}
    }
  else
    {
      if (!vcl_cfg->vpp_api_filename)
	vcl_cfg->vpp_api_filename = format (0, "/vpe-api%c", 0);

      vl_set_memory_root_path ((char *) vcl_cfg->vpp_api_chroot);

      VDBG (0, "app (%s) connecting to VPP api (%s)...",
	    app_name, vcl_cfg->vpp_api_filename);

      if (vl_client_connect_to_vlib ((char *) vcl_cfg->vpp_api_filename,
				     app_name, vcm->cfg.vpp_api_q_length) < 0)
	{
	  VERR ("app (%s) connect failed!", app_name);
	  return VPPCOM_ECONNREFUSED;
	}
    }

  am = vlibapi_get_main ();
  wrk->vl_input_queue = am->shmem_hdr->vl_input_queue;
  wrk->my_client_index = (u32) am->my_client_index;
  wrk->wrk_state = STATE_APP_CONN_VPP;

  VDBG (0, "app (%s) is connected to VPP!", app_name);
  vcl_evt (VCL_EVT_INIT, vcm);
  return VPPCOM_OK;
}

void
vppcom_disconnect_from_vpp (void)
{
  vcl_worker_t *wrk = vcl_worker_get_current ();
  vppcom_cfg_t *vcl_cfg = &vcm->cfg;

  if (vcl_cfg->vpp_api_socket_name)
    vl_socket_client_disconnect2 (&wrk->bapi_sock_ctx);
  else
    vl_client_disconnect_from_vlib ();
}

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