2 *------------------------------------------------------------------
3 * Copyright (c) 2017 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
21 #include <arpa/inet.h>
25 #include <vpp-api/vapi/vapi_dbg.h>
26 #include <vpp-api/vapi/vapi.h>
27 #include <vpp-api/vapi/vapi_internal.h>
28 #include <vppinfra/types.h>
29 #include <vppinfra/pool.h>
30 #include <vlib/vlib.h>
31 #include <vlibapi/api_common.h>
32 #include <vlibmemory/memory_client.h>
34 #include <vapi/memclnt.api.vapi.h>
36 /* we need to use control pings for some stuff and because we're forced to put
37 * the code in headers, we need a way to be able to grab the ids of these
38 * messages - so declare them here as extern */
39 vapi_msg_id_t vapi_msg_id_control_ping = 0;
40 vapi_msg_id_t vapi_msg_id_control_ping_reply = 0;
42 DEFINE_VAPI_MSG_IDS_MEMCLNT_API_JSON;
47 vapi_message_desc_t **msgs;
48 size_t max_len_name_with_crc;
59 static const u32 context_counter_mask = (1 << 31);
63 vapi_error_e (*cb) (vapi_ctx_t ctx, void *callback_ctx, vapi_msg_id_t id,
66 } vapi_generic_cb_with_ctx;
70 vapi_error_e (*cb) (vapi_ctx_t ctx, void *callback_ctx, void *payload);
72 } vapi_event_cb_with_ctx;
77 int requests_size; /* size of the requests array (circular queue) */
78 int requests_start; /* index of first request */
79 int requests_count; /* number of used slots */
82 vapi_generic_cb_with_ctx generic_cb;
83 vapi_event_cb_with_ctx *event_cbs;
84 u16 *vapi_msg_id_t_to_vl_msg_id;
86 vapi_msg_id_t *vl_msg_id_to_vapi_msg_t;
88 bool handle_keepalives;
89 pthread_mutex_t requests_mutex;
93 vapi_gen_req_context (vapi_ctx_t ctx)
95 ++ctx->context_counter;
96 ctx->context_counter %= context_counter_mask;
97 return ctx->context_counter | context_counter_mask;
101 vapi_get_request_count (vapi_ctx_t ctx)
103 return ctx->requests_count;
107 vapi_requests_full (vapi_ctx_t ctx)
109 return (ctx->requests_count == ctx->requests_size);
113 vapi_requests_empty (vapi_ctx_t ctx)
115 return (0 == ctx->requests_count);
119 vapi_requests_end (vapi_ctx_t ctx)
121 return (ctx->requests_start + ctx->requests_count) % ctx->requests_size;
125 vapi_store_request (vapi_ctx_t ctx, u32 context, bool is_dump,
126 vapi_cb_t callback, void *callback_ctx)
128 assert (!vapi_requests_full (ctx));
129 /* if the mutex is not held, bad things will happen */
130 assert (0 != pthread_mutex_trylock (&ctx->requests_mutex));
131 const int requests_end = vapi_requests_end (ctx);
132 vapi_req_t *slot = &ctx->requests[requests_end];
133 slot->is_dump = is_dump;
134 slot->context = context;
135 slot->callback = callback;
136 slot->callback_ctx = callback_ctx;
137 VAPI_DBG ("stored@%d: context:%x (start is @%d)", requests_end, context,
138 ctx->requests_start);
139 ++ctx->requests_count;
140 assert (!vapi_requests_empty (ctx));
144 struct to_be_freed_s;
148 struct to_be_freed_s *next;
151 static struct to_be_freed_s *to_be_freed = NULL;
154 vapi_add_to_be_freed (void *v)
156 struct to_be_freed_s *prev = NULL;
157 struct to_be_freed_s *tmp;
159 while (tmp && tmp->v)
168 tmp = to_be_freed = calloc (1, sizeof (*to_be_freed));
172 tmp = prev->next = calloc (1, sizeof (*to_be_freed));
175 VAPI_DBG ("To be freed %p", v);
180 vapi_trace_free (void *v)
182 struct to_be_freed_s *tmp = to_be_freed;
183 while (tmp && tmp->v != v)
187 if (tmp && tmp->v == v)
189 VAPI_DBG ("Freed %p", v);
194 VAPI_ERR ("Trying to free untracked pointer %p", v);
200 vapi_to_be_freed_validate ()
202 struct to_be_freed_s *tmp = to_be_freed;
207 VAPI_ERR ("Unfreed msg %p!", tmp->v);
216 vapi_msg_alloc (vapi_ctx_t ctx, size_t size)
222 void *rv = vl_msg_api_alloc_or_null (size);
227 vapi_msg_free (vapi_ctx_t ctx, void *msg)
234 vapi_trace_free (msg);
236 vl_msg_api_free (msg);
240 vapi_lookup_vapi_msg_id_t (vapi_ctx_t ctx, u16 vl_msg_id)
242 if (vl_msg_id <= ctx->vl_msg_id_max)
244 return ctx->vl_msg_id_to_vapi_msg_t[vl_msg_id];
246 return VAPI_INVALID_MSG_ID;
250 vapi_ctx_alloc (vapi_ctx_t * result)
252 vapi_ctx_t ctx = calloc (1, sizeof (struct vapi_ctx_s));
257 ctx->context_counter = 0;
258 ctx->vapi_msg_id_t_to_vl_msg_id =
259 malloc (__vapi_metadata.count *
260 sizeof (*ctx->vapi_msg_id_t_to_vl_msg_id));
261 if (!ctx->vapi_msg_id_t_to_vl_msg_id)
265 memset (ctx->vapi_msg_id_t_to_vl_msg_id, ~0,
266 __vapi_metadata.count * sizeof (*ctx->vapi_msg_id_t_to_vl_msg_id));
267 ctx->event_cbs = calloc (__vapi_metadata.count, sizeof (*ctx->event_cbs));
272 pthread_mutex_init (&ctx->requests_mutex, NULL);
281 vapi_ctx_free (vapi_ctx_t ctx)
283 assert (!ctx->connected);
284 free (ctx->requests);
285 free (ctx->vapi_msg_id_t_to_vl_msg_id);
286 free (ctx->event_cbs);
287 free (ctx->vl_msg_id_to_vapi_msg_t);
288 pthread_mutex_destroy (&ctx->requests_mutex);
293 vapi_is_msg_available (vapi_ctx_t ctx, vapi_msg_id_t id)
295 return vapi_lookup_vl_msg_id (ctx, id) != UINT16_MAX;
299 vapi_connect (vapi_ctx_t ctx, const char *name,
300 const char *chroot_prefix,
301 int max_outstanding_requests,
302 int response_queue_size, vapi_mode_e mode,
303 bool handle_keepalives)
305 if (response_queue_size <= 0 || max_outstanding_requests <= 0)
309 ctx->requests_size = max_outstanding_requests;
310 const size_t size = ctx->requests_size * sizeof (*ctx->requests);
311 void *tmp = realloc (ctx->requests, size);
317 memset (ctx->requests, 0, size);
318 /* coverity[MISSING_LOCK] - 177211 requests_mutex is not needed here */
319 ctx->requests_start = ctx->requests_count = 0;
322 VAPI_DBG ("set memory root path `%s'", chroot_prefix);
323 vl_set_memory_root_path ((char *) chroot_prefix);
325 static char api_map[] = "/vpe-api";
326 VAPI_DBG ("client api map `%s'", api_map);
327 if ((vl_client_api_map (api_map)) < 0)
329 return VAPI_EMAP_FAIL;
331 VAPI_DBG ("connect client `%s'", name);
332 if (vl_client_connect ((char *) name, 0, response_queue_size) < 0)
334 vl_client_api_unmap ();
335 return VAPI_ECON_FAIL;
337 #if VAPI_DEBUG_CONNECT
338 VAPI_DBG ("start probing messages");
342 for (i = 0; i < __vapi_metadata.count; ++i)
344 vapi_message_desc_t *m = __vapi_metadata.msgs[i];
345 u8 scratch[m->name_with_crc_len + 1];
346 memcpy (scratch, m->name_with_crc, m->name_with_crc_len + 1);
347 u32 id = vl_msg_api_get_msg_index (scratch);
348 if (VAPI_INVALID_MSG_ID != id)
352 VAPI_ERR ("Returned vl_msg_id `%u' > UINT16MAX `%u'!", id,
357 if (id > ctx->vl_msg_id_max)
359 vapi_msg_id_t *tmp = realloc (ctx->vl_msg_id_to_vapi_msg_t,
361 (*ctx->vl_msg_id_to_vapi_msg_t) *
368 ctx->vl_msg_id_to_vapi_msg_t = tmp;
369 ctx->vl_msg_id_max = id;
371 ctx->vl_msg_id_to_vapi_msg_t[id] = m->id;
372 ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = id;
373 #if VAPI_DEBUG_CONNECT
374 VAPI_DBG ("Message `%s' has vl_msg_id `%u'", m->name_with_crc,
380 ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = UINT16_MAX;
381 VAPI_DBG ("Message `%s' not available", m->name_with_crc);
384 #if VAPI_DEBUG_CONNECT
385 VAPI_DBG ("finished probing messages");
387 if (!vapi_is_msg_available (ctx, vapi_msg_id_control_ping) ||
388 !vapi_is_msg_available (ctx, vapi_msg_id_control_ping_reply))
391 ("control ping or control ping reply not available, cannot connect");
392 rv = VAPI_EINCOMPATIBLE;
396 ctx->connected = true;
397 if (vapi_is_msg_available (ctx, vapi_msg_id_memclnt_keepalive))
399 ctx->handle_keepalives = handle_keepalives;
403 ctx->handle_keepalives = false;
407 vl_client_disconnect ();
408 vl_client_api_unmap ();
413 vapi_disconnect (vapi_ctx_t ctx)
419 vl_client_disconnect ();
420 vl_client_api_unmap ();
422 vapi_to_be_freed_validate ();
424 ctx->connected = false;
429 vapi_get_fd (vapi_ctx_t ctx, int *fd)
435 vapi_send (vapi_ctx_t ctx, void *msg)
437 vapi_error_e rv = VAPI_OK;
438 if (!ctx || !msg || !ctx->connected)
444 svm_queue_t *q = api_main.shmem_hdr->vl_input_queue;
446 unsigned msgid = be16toh (*(u16 *) msg);
447 if (msgid <= ctx->vl_msg_id_max)
449 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid];
450 if (id < __vapi_metadata.count)
452 VAPI_DBG ("send msg@%p:%u[%s]", msg, msgid,
453 __vapi_metadata.msgs[id]->name);
457 VAPI_DBG ("send msg@%p:%u[UNKNOWN]", msg, msgid);
462 VAPI_DBG ("send msg@%p:%u[UNKNOWN]", msg, msgid);
465 tmp = svm_queue_add (q, (u8 *) & msg,
466 VAPI_MODE_BLOCKING == ctx->mode ? 0 : 1);
472 VAPI_DBG ("vapi_send() rv = %d", rv);
477 vapi_send2 (vapi_ctx_t ctx, void *msg1, void *msg2)
479 vapi_error_e rv = VAPI_OK;
480 if (!ctx || !msg1 || !msg2 || !ctx->connected)
485 svm_queue_t *q = api_main.shmem_hdr->vl_input_queue;
487 unsigned msgid1 = be16toh (*(u16 *) msg1);
488 unsigned msgid2 = be16toh (*(u16 *) msg2);
489 const char *name1 = "UNKNOWN";
490 const char *name2 = "UNKNOWN";
491 if (msgid1 <= ctx->vl_msg_id_max)
493 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid1];
494 if (id < __vapi_metadata.count)
496 name1 = __vapi_metadata.msgs[id]->name;
499 if (msgid2 <= ctx->vl_msg_id_max)
501 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid2];
502 if (id < __vapi_metadata.count)
504 name2 = __vapi_metadata.msgs[id]->name;
507 VAPI_DBG ("send two: %u[%s], %u[%s]", msgid1, name1, msgid2, name2);
509 int tmp = svm_queue_add2 (q, (u8 *) & msg1, (u8 *) & msg2,
510 VAPI_MODE_BLOCKING == ctx->mode ? 0 : 1);
516 VAPI_DBG ("vapi_send() rv = %d", rv);
521 vapi_recv (vapi_ctx_t ctx, void **msg, size_t * msg_size,
522 svm_q_conditional_wait_t cond, u32 time)
524 if (!ctx || !ctx->connected || !msg || !msg_size)
528 vapi_error_e rv = VAPI_OK;
529 api_main_t *am = &api_main;
532 if (am->our_pid == 0)
537 svm_queue_t *q = am->vl_input_queue;
539 VAPI_DBG ("doing shm queue sub");
541 int tmp = svm_queue_sub (q, (u8 *) & data, cond, time);
546 vapi_add_to_be_freed ((void *) data);
549 (msgbuf_t *) ((u8 *) data - offsetof (msgbuf_t, data));
550 if (!msgbuf->data_len)
552 vapi_msg_free (ctx, (u8 *) data);
556 *msg_size = ntohl (msgbuf->data_len);
558 unsigned msgid = be16toh (*(u16 *) * msg);
559 if (msgid <= ctx->vl_msg_id_max)
561 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid];
562 if (id < __vapi_metadata.count)
564 VAPI_DBG ("recv msg@%p:%u[%s]", *msg, msgid,
565 __vapi_metadata.msgs[id]->name);
569 VAPI_DBG ("recv msg@%p:%u[UNKNOWN]", *msg, msgid);
574 VAPI_DBG ("recv msg@%p:%u[UNKNOWN]", *msg, msgid);
577 if (ctx->handle_keepalives)
579 unsigned msgid = be16toh (*(u16 *) * msg);
581 vapi_lookup_vl_msg_id (ctx, vapi_msg_id_memclnt_keepalive))
583 vapi_msg_memclnt_keepalive_reply *reply = NULL;
586 reply = vapi_msg_alloc (ctx, sizeof (*reply));
589 reply->header.context = vapi_get_client_index (ctx);
590 reply->header._vl_msg_id =
591 vapi_lookup_vl_msg_id (ctx,
592 vapi_msg_id_memclnt_keepalive_reply);
593 reply->payload.retval = 0;
594 vapi_msg_memclnt_keepalive_reply_hton (reply);
595 while (VAPI_EAGAIN == vapi_send (ctx, reply));
596 vapi_msg_free (ctx, *msg);
597 VAPI_DBG ("autohandled memclnt_keepalive");
610 vapi_wait (vapi_ctx_t ctx, vapi_wait_mode_e mode)
616 vapi_dispatch_response (vapi_ctx_t ctx, vapi_msg_id_t id,
617 u32 context, void *msg)
620 if (0 != (mrv = pthread_mutex_lock (&ctx->requests_mutex)))
622 VAPI_DBG ("pthread_mutex_lock() failed, rv=%d:%s", mrv, strerror (mrv));
623 return VAPI_MUTEX_FAILURE;
625 int tmp = ctx->requests_start;
626 const int requests_end = vapi_requests_end (ctx);
627 while (ctx->requests[tmp].context != context && tmp != requests_end)
630 if (tmp == ctx->requests_size)
635 VAPI_DBG ("dispatch, search from %d, %s at %d", ctx->requests_start,
636 ctx->requests[tmp].context == context ? "matched" : "stopped",
638 vapi_error_e rv = VAPI_OK;
639 if (ctx->requests[tmp].context == context)
641 while (ctx->requests_start != tmp)
643 VAPI_ERR ("No response to req with context=%u",
644 (unsigned) ctx->requests[tmp].context);
645 ctx->requests[ctx->requests_start].callback (ctx, ctx->requests
647 requests_start].callback_ctx,
650 memset (&ctx->requests[ctx->requests_start], 0,
651 sizeof (ctx->requests[ctx->requests_start]));
652 ++ctx->requests_start;
653 --ctx->requests_count;
654 if (ctx->requests_start == ctx->requests_size)
656 ctx->requests_start = 0;
659 // now ctx->requests_start == tmp
660 int payload_offset = vapi_get_payload_offset (id);
661 void *payload = ((u8 *) msg) + payload_offset;
663 if (ctx->requests[tmp].is_dump)
665 if (vapi_msg_id_control_ping_reply == id)
674 if (payload_offset != -1)
677 ctx->requests[tmp].callback (ctx, ctx->requests[tmp].callback_ctx,
678 VAPI_OK, is_last, payload);
682 /* this is a message without payload, so bend the callback a little
685 ((vapi_error_e (*)(vapi_ctx_t, void *, vapi_error_e, bool))
686 ctx->requests[tmp].callback) (ctx,
687 ctx->requests[tmp].callback_ctx,
692 memset (&ctx->requests[ctx->requests_start], 0,
693 sizeof (ctx->requests[ctx->requests_start]));
694 ++ctx->requests_start;
695 --ctx->requests_count;
696 if (ctx->requests_start == ctx->requests_size)
698 ctx->requests_start = 0;
701 VAPI_DBG ("after dispatch, req start = %d, end = %d, count = %d",
702 ctx->requests_start, requests_end, ctx->requests_count);
704 if (0 != (mrv = pthread_mutex_unlock (&ctx->requests_mutex)))
706 VAPI_DBG ("pthread_mutex_unlock() failed, rv=%d:%s", mrv,
708 abort (); /* this really shouldn't happen */
714 vapi_dispatch_event (vapi_ctx_t ctx, vapi_msg_id_t id, void *msg)
716 if (ctx->event_cbs[id].cb)
718 return ctx->event_cbs[id].cb (ctx, ctx->event_cbs[id].ctx, msg);
720 else if (ctx->generic_cb.cb)
722 return ctx->generic_cb.cb (ctx, ctx->generic_cb.ctx, id, msg);
727 ("No handler/generic handler for msg id %u[%s], message ignored",
728 (unsigned) id, __vapi_metadata.msgs[id]->name);
734 vapi_msg_is_with_context (vapi_msg_id_t id)
736 assert (id <= __vapi_metadata.count);
737 return __vapi_metadata.msgs[id]->has_context;
741 vapi_dispatch_one (vapi_ctx_t ctx)
743 VAPI_DBG ("vapi_dispatch_one()");
746 vapi_error_e rv = vapi_recv (ctx, &msg, &size, SVM_Q_WAIT, 0);
749 VAPI_DBG ("vapi_recv failed with rv=%d", rv);
752 u16 vpp_id = be16toh (*(u16 *) msg);
753 if (vpp_id > ctx->vl_msg_id_max)
755 VAPI_ERR ("Unknown msg ID received, id `%u', out of range <0,%u>",
756 (unsigned) vpp_id, (unsigned) ctx->vl_msg_id_max);
757 vapi_msg_free (ctx, msg);
760 if (VAPI_INVALID_MSG_ID == (unsigned) ctx->vl_msg_id_to_vapi_msg_t[vpp_id])
762 VAPI_ERR ("Unknown msg ID received, id `%u' marked as not supported",
764 vapi_msg_free (ctx, msg);
767 const vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[vpp_id];
768 const size_t expect_size = vapi_get_message_size (id);
769 if (size < expect_size)
772 ("Invalid msg received, unexpected size `%zu' < expected min `%zu'",
774 vapi_msg_free (ctx, msg);
778 vapi_get_swap_to_host_func (id) (msg);
779 if (vapi_msg_is_with_context (id))
781 context = *(u32 *) (((u8 *) msg) + vapi_get_context_offset (id));
782 /* is this a message originating from VAPI? */
783 VAPI_DBG ("dispatch, context is %x", context);
784 if (context & context_counter_mask)
786 rv = vapi_dispatch_response (ctx, id, context, msg);
790 rv = vapi_dispatch_event (ctx, id, msg);
793 vapi_msg_free (ctx, msg);
798 vapi_dispatch (vapi_ctx_t ctx)
800 vapi_error_e rv = VAPI_OK;
801 while (!vapi_requests_empty (ctx))
803 rv = vapi_dispatch_one (ctx);
813 vapi_set_event_cb (vapi_ctx_t ctx, vapi_msg_id_t id,
814 vapi_event_cb callback, void *callback_ctx)
816 vapi_event_cb_with_ctx *c = &ctx->event_cbs[id];
818 c->ctx = callback_ctx;
822 vapi_clear_event_cb (vapi_ctx_t ctx, vapi_msg_id_t id)
824 vapi_set_event_cb (ctx, id, NULL, NULL);
828 vapi_set_generic_event_cb (vapi_ctx_t ctx, vapi_generic_event_cb callback,
831 ctx->generic_cb.cb = callback;
832 ctx->generic_cb.ctx = callback_ctx;
836 vapi_clear_generic_event_cb (vapi_ctx_t ctx)
838 ctx->generic_cb.cb = NULL;
839 ctx->generic_cb.ctx = NULL;
843 vapi_lookup_vl_msg_id (vapi_ctx_t ctx, vapi_msg_id_t id)
845 assert (id < __vapi_metadata.count);
846 return ctx->vapi_msg_id_t_to_vl_msg_id[id];
850 vapi_get_client_index (vapi_ctx_t ctx)
852 return api_main.my_client_index;
856 vapi_is_nonblocking (vapi_ctx_t ctx)
858 return (VAPI_MODE_NONBLOCKING == ctx->mode);
862 vapi_get_max_request_count (vapi_ctx_t ctx)
864 return ctx->requests_size - 1;
868 vapi_get_payload_offset (vapi_msg_id_t id)
870 assert (id < __vapi_metadata.count);
871 return __vapi_metadata.msgs[id]->payload_offset;
874 void (*vapi_get_swap_to_host_func (vapi_msg_id_t id)) (void *msg)
876 assert (id < __vapi_metadata.count);
877 return __vapi_metadata.msgs[id]->swap_to_host;
880 void (*vapi_get_swap_to_be_func (vapi_msg_id_t id)) (void *msg)
882 assert (id < __vapi_metadata.count);
883 return __vapi_metadata.msgs[id]->swap_to_be;
887 vapi_get_message_size (vapi_msg_id_t id)
889 assert (id < __vapi_metadata.count);
890 return __vapi_metadata.msgs[id]->size;
894 vapi_get_context_offset (vapi_msg_id_t id)
896 assert (id < __vapi_metadata.count);
897 return __vapi_metadata.msgs[id]->context_offset;
901 vapi_register_msg (vapi_message_desc_t * msg)
904 for (i = 0; i < __vapi_metadata.count; ++i)
907 (msg->name_with_crc, __vapi_metadata.msgs[i]->name_with_crc))
909 /* this happens if somebody is linking together several objects while
910 * using the static inline headers, just fill in the already
911 * assigned id here so that all the objects are in sync */
912 msg->id = __vapi_metadata.msgs[i]->id;
916 vapi_msg_id_t id = __vapi_metadata.count;
917 ++__vapi_metadata.count;
918 __vapi_metadata.msgs =
919 realloc (__vapi_metadata.msgs,
920 sizeof (*__vapi_metadata.msgs) * __vapi_metadata.count);
921 __vapi_metadata.msgs[id] = msg;
922 size_t s = strlen (msg->name_with_crc);
923 if (s > __vapi_metadata.max_len_name_with_crc)
925 __vapi_metadata.max_len_name_with_crc = s;
932 vapi_producer_lock (vapi_ctx_t ctx)
935 if (0 != (mrv = pthread_mutex_lock (&ctx->requests_mutex)))
937 VAPI_DBG ("pthread_mutex_lock() failed, rv=%d:%s", mrv, strerror (mrv));
938 (void) mrv; /* avoid warning if the above debug is not enabled */
939 return VAPI_MUTEX_FAILURE;
945 vapi_producer_unlock (vapi_ctx_t ctx)
948 if (0 != (mrv = pthread_mutex_unlock (&ctx->requests_mutex)))
950 VAPI_DBG ("pthread_mutex_unlock() failed, rv=%d:%s", mrv,
952 (void) mrv; /* avoid warning if the above debug is not enabled */
953 return VAPI_MUTEX_FAILURE;
959 vapi_get_message_count ()
961 return __vapi_metadata.count;
965 vapi_get_msg_name (vapi_msg_id_t id)
967 return __vapi_metadata.msgs[id]->name;
971 * fd.io coding-style-patch-verification: ON
974 * eval: (c-set-style "gnu")