2 *------------------------------------------------------------------
3 * interface_api.c - vnet interface api
5 * Copyright (c) 2016 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
20 #include <vnet/vnet.h>
21 #include <vlibmemory/api.h>
23 #include <vnet/interface.h>
24 #include <vnet/api_errno.h>
25 #include <vnet/ethernet/ethernet.h>
26 #include <vnet/ip/ip.h>
27 #include <vnet/fib/fib_table.h>
28 #include <vnet/l2/l2_vtr.h>
29 #include <vnet/vnet_msg_enum.h>
30 #include <vnet/fib/fib_api.h>
32 #define vl_typedefs /* define message structures */
33 #include <vnet/vnet_all_api_h.h>
36 #define vl_endianfun /* define message structures */
37 #include <vnet/vnet_all_api_h.h>
40 /* instantiate all the print functions we know about */
41 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
43 #include <vnet/vnet_all_api_h.h>
46 #include <vlibapi/api_helper_macros.h>
48 #define foreach_vpe_api_msg \
49 _(SW_INTERFACE_SET_FLAGS, sw_interface_set_flags) \
50 _(SW_INTERFACE_SET_MTU, sw_interface_set_mtu) \
51 _(WANT_INTERFACE_EVENTS, want_interface_events) \
52 _(SW_INTERFACE_DUMP, sw_interface_dump) \
53 _(SW_INTERFACE_ADD_DEL_ADDRESS, sw_interface_add_del_address) \
54 _(SW_INTERFACE_SET_TABLE, sw_interface_set_table) \
55 _(SW_INTERFACE_GET_TABLE, sw_interface_get_table) \
56 _(SW_INTERFACE_SET_UNNUMBERED, sw_interface_set_unnumbered) \
57 _(SW_INTERFACE_CLEAR_STATS, sw_interface_clear_stats) \
58 _(SW_INTERFACE_TAG_ADD_DEL, sw_interface_tag_add_del)
61 vl_api_sw_interface_set_flags_t_handler (vl_api_sw_interface_set_flags_t * mp)
63 vl_api_sw_interface_set_flags_reply_t *rmp;
64 vnet_main_t *vnm = vnet_get_main ();
69 VALIDATE_SW_IF_INDEX (mp);
71 flags = mp->admin_up_down ? VNET_SW_INTERFACE_FLAG_ADMIN_UP : 0;
73 error = vnet_sw_interface_set_flags (vnm, ntohl (mp->sw_if_index), flags);
77 clib_error_report (error);
80 BAD_SW_IF_INDEX_LABEL;
81 REPLY_MACRO (VL_API_SW_INTERFACE_SET_FLAGS_REPLY);
85 vl_api_sw_interface_set_mtu_t_handler (vl_api_sw_interface_set_mtu_t * mp)
87 vl_api_sw_interface_set_mtu_reply_t *rmp;
88 vnet_main_t *vnm = vnet_get_main ();
89 u32 flags = ETHERNET_INTERFACE_FLAG_MTU;
90 u32 sw_if_index = ntohl (mp->sw_if_index);
91 u16 mtu = ntohs (mp->mtu);
92 ethernet_main_t *em = ðernet_main;
95 VALIDATE_SW_IF_INDEX (mp);
97 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, sw_if_index);
98 ethernet_interface_t *eif = ethernet_get_interface (em, sw_if_index);
102 rv = VNET_API_ERROR_FEATURE_DISABLED;
103 goto bad_sw_if_index;
106 if (mtu < hi->min_supported_packet_bytes)
108 rv = VNET_API_ERROR_INVALID_VALUE;
109 goto bad_sw_if_index;
112 if (mtu > hi->max_supported_packet_bytes)
114 rv = VNET_API_ERROR_INVALID_VALUE;
115 goto bad_sw_if_index;
118 if (hi->max_packet_bytes != mtu)
120 hi->max_packet_bytes = mtu;
121 ethernet_set_flags (vnm, sw_if_index, flags);
124 BAD_SW_IF_INDEX_LABEL;
125 REPLY_MACRO (VL_API_SW_INTERFACE_SET_MTU_REPLY);
129 send_sw_interface_details (vpe_api_main_t * am,
130 unix_shared_memory_queue_t * q,
131 vnet_sw_interface_t * swif,
132 u8 * interface_name, u32 context)
134 vl_api_sw_interface_details_t *mp;
135 vnet_main_t *vnm = vnet_get_main ();
136 vnet_hw_interface_t *hi;
139 hi = vnet_get_sup_hw_interface (am->vnet_main, swif->sw_if_index);
141 mp = vl_msg_api_alloc (sizeof (*mp));
142 memset (mp, 0, sizeof (*mp));
143 mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_DETAILS);
144 mp->sw_if_index = ntohl (swif->sw_if_index);
145 mp->sup_sw_if_index = ntohl (swif->sup_sw_if_index);
146 mp->admin_up_down = (swif->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? 1 : 0;
147 mp->link_up_down = (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) ? 1 : 0;
148 mp->link_duplex = ((hi->flags & VNET_HW_INTERFACE_FLAG_DUPLEX_MASK) >>
149 VNET_HW_INTERFACE_FLAG_DUPLEX_SHIFT);
150 mp->link_speed = ((hi->flags & VNET_HW_INTERFACE_FLAG_SPEED_MASK) >>
151 VNET_HW_INTERFACE_FLAG_SPEED_SHIFT);
152 mp->link_mtu = ntohs (hi->max_packet_bytes);
153 mp->context = context;
155 strncpy ((char *) mp->interface_name,
156 (char *) interface_name, ARRAY_LEN (mp->interface_name) - 1);
158 /* Send the L2 address for ethernet physical intfcs */
159 if (swif->sup_sw_if_index == swif->sw_if_index
160 && hi->hw_class_index == ethernet_hw_interface_class.index)
162 ethernet_main_t *em = ethernet_get_main (am->vlib_main);
163 ethernet_interface_t *ei;
165 ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
166 ASSERT (sizeof (mp->l2_address) >= sizeof (ei->address));
167 clib_memcpy (mp->l2_address, ei->address, sizeof (ei->address));
168 mp->l2_address_length = ntohl (sizeof (ei->address));
170 else if (swif->sup_sw_if_index != swif->sw_if_index)
172 vnet_sub_interface_t *sub = &swif->sub;
173 mp->sub_id = ntohl (sub->id);
174 mp->sub_dot1ad = sub->eth.flags.dot1ad;
175 mp->sub_number_of_tags =
176 sub->eth.flags.one_tag + sub->eth.flags.two_tags * 2;
177 mp->sub_outer_vlan_id = ntohs (sub->eth.outer_vlan_id);
178 mp->sub_inner_vlan_id = ntohs (sub->eth.inner_vlan_id);
179 mp->sub_exact_match = sub->eth.flags.exact_match;
180 mp->sub_default = sub->eth.flags.default_sub;
181 mp->sub_outer_vlan_id_any = sub->eth.flags.outer_vlan_id_any;
182 mp->sub_inner_vlan_id_any = sub->eth.flags.inner_vlan_id_any;
184 /* vlan tag rewrite data */
185 u32 vtr_op = L2_VTR_DISABLED;
186 u32 vtr_push_dot1q = 0, vtr_tag1 = 0, vtr_tag2 = 0;
188 if (l2vtr_get (am->vlib_main, am->vnet_main, swif->sw_if_index,
189 &vtr_op, &vtr_push_dot1q, &vtr_tag1, &vtr_tag2) != 0)
191 // error - default to disabled
192 mp->vtr_op = ntohl (L2_VTR_DISABLED);
193 clib_warning ("cannot get vlan tag rewrite for sw_if_index %d",
198 mp->vtr_op = ntohl (vtr_op);
199 mp->vtr_push_dot1q = ntohl (vtr_push_dot1q);
200 mp->vtr_tag1 = ntohl (vtr_tag1);
201 mp->vtr_tag2 = ntohl (vtr_tag2);
205 /* pbb tag rewrite data */
206 u32 vtr_op = L2_VTR_DISABLED;
212 memset (b_dmac, 0, sizeof (b_dmac));
213 memset (b_smac, 0, sizeof (b_smac));
215 if (!l2pbb_get (am->vlib_main, am->vnet_main, swif->sw_if_index,
216 &vtr_op, &outer_tag, b_dmac, b_smac, &b_vlanid, &i_sid))
219 clib_memcpy (mp->b_dmac, b_dmac, sizeof (b_dmac));
220 clib_memcpy (mp->b_smac, b_smac, sizeof (b_smac));
221 mp->b_vlanid = b_vlanid;
225 tag = vnet_get_sw_interface_tag (vnm, swif->sw_if_index);
227 strncpy ((char *) mp->tag, (char *) tag, ARRAY_LEN (mp->tag) - 1);
229 vl_msg_api_send_shmem (q, (u8 *) & mp);
233 vl_api_sw_interface_dump_t_handler (vl_api_sw_interface_dump_t * mp)
235 vpe_api_main_t *am = &vpe_api_main;
236 vnet_sw_interface_t *swif;
237 vnet_interface_main_t *im = &am->vnet_main->interface_main;
238 u8 *filter_string = 0, *name_string = 0;
239 unix_shared_memory_queue_t *q;
240 char *strcasestr (char *, char *); /* lnx hdr file botch */
242 q = vl_api_client_index_to_input_queue (mp->client_index);
247 if (mp->name_filter_valid)
249 mp->name_filter[ARRAY_LEN (mp->name_filter) - 1] = 0;
250 filter_string = format (0, "%s%c", mp->name_filter, 0);
254 pool_foreach (swif, im->sw_interfaces,
256 name_string = format (name_string, "%U%c",
257 format_vnet_sw_interface_name,
258 am->vnet_main, swif, 0);
260 if (mp->name_filter_valid == 0 ||
261 strcasestr((char *) name_string, (char *) filter_string)) {
263 send_sw_interface_details (am, q, swif, name_string, mp->context);
265 _vec_len (name_string) = 0;
269 vec_free (name_string);
270 vec_free (filter_string);
274 vl_api_sw_interface_add_del_address_t_handler
275 (vl_api_sw_interface_add_del_address_t * mp)
277 vlib_main_t *vm = vlib_get_main ();
278 vl_api_sw_interface_add_del_address_reply_t *rmp;
282 VALIDATE_SW_IF_INDEX (mp);
284 is_del = mp->is_add == 0;
287 ip_del_all_interface_addresses (vm, ntohl (mp->sw_if_index));
288 else if (mp->is_ipv6)
289 ip6_add_del_interface_address (vm, ntohl (mp->sw_if_index),
290 (void *) mp->address,
291 mp->address_length, is_del);
293 ip4_add_del_interface_address (vm, ntohl (mp->sw_if_index),
294 (void *) mp->address,
295 mp->address_length, is_del);
297 BAD_SW_IF_INDEX_LABEL;
299 REPLY_MACRO (VL_API_SW_INTERFACE_ADD_DEL_ADDRESS_REPLY);
302 void stats_dslock_with_hint (int hint, int tag) __attribute__ ((weak));
304 stats_dslock_with_hint (int hint, int tag)
308 void stats_dsunlock (void) __attribute__ ((weak));
310 stats_dsunlock (void)
315 vl_api_sw_interface_set_table_t_handler (vl_api_sw_interface_set_table_t * mp)
318 u32 table_id = ntohl (mp->vrf_id);
319 u32 sw_if_index = ntohl (mp->sw_if_index);
320 vl_api_sw_interface_set_table_reply_t *rmp;
323 VALIDATE_SW_IF_INDEX (mp);
325 stats_dslock_with_hint (1 /* release hint */ , 4 /* tag */ );
329 fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6,
332 vec_validate (ip6_main.fib_index_by_sw_if_index, sw_if_index);
333 ip6_main.fib_index_by_sw_if_index[sw_if_index] = fib_index;
338 fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4,
341 vec_validate (ip4_main.fib_index_by_sw_if_index, sw_if_index);
342 ip4_main.fib_index_by_sw_if_index[sw_if_index] = fib_index;
346 BAD_SW_IF_INDEX_LABEL;
348 REPLY_MACRO (VL_API_SW_INTERFACE_SET_TABLE_REPLY);
352 send_sw_interface_get_table_reply (unix_shared_memory_queue_t * q,
353 u32 context, int retval, u32 vrf_id)
355 vl_api_sw_interface_get_table_reply_t *mp;
357 mp = vl_msg_api_alloc (sizeof (*mp));
358 memset (mp, 0, sizeof (*mp));
359 mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_GET_TABLE_REPLY);
360 mp->context = context;
361 mp->retval = htonl (retval);
362 mp->vrf_id = htonl (vrf_id);
364 vl_msg_api_send_shmem (q, (u8 *) & mp);
368 vl_api_sw_interface_get_table_t_handler (vl_api_sw_interface_get_table_t * mp)
370 unix_shared_memory_queue_t *q;
371 fib_table_t *fib_table = 0;
372 u32 sw_if_index = ~0;
375 fib_protocol_t fib_proto = FIB_PROTOCOL_IP4;
378 q = vl_api_client_index_to_input_queue (mp->client_index);
382 VALIDATE_SW_IF_INDEX (mp);
384 sw_if_index = ntohl (mp->sw_if_index);
387 fib_proto = FIB_PROTOCOL_IP6;
389 fib_index = fib_table_get_index_for_sw_if_index (fib_proto, sw_if_index);
392 fib_table = fib_table_get (fib_index, fib_proto);
393 table_id = fib_table->ft_table_id;
396 BAD_SW_IF_INDEX_LABEL;
398 send_sw_interface_get_table_reply (q, mp->context, rv, table_id);
401 static void vl_api_sw_interface_set_unnumbered_t_handler
402 (vl_api_sw_interface_set_unnumbered_t * mp)
404 vl_api_sw_interface_set_unnumbered_reply_t *rmp;
406 vnet_sw_interface_t *si;
407 vnet_main_t *vnm = vnet_get_main ();
408 u32 sw_if_index, unnumbered_sw_if_index;
410 sw_if_index = ntohl (mp->sw_if_index);
411 unnumbered_sw_if_index = ntohl (mp->unnumbered_sw_if_index);
414 * The API message field names are backwards from
415 * the underlying data structure names.
416 * It's not worth changing them now.
418 if (pool_is_free_index (vnm->interface_main.sw_interfaces,
419 unnumbered_sw_if_index))
421 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
425 /* Only check the "use loop0" field when setting the binding */
427 pool_is_free_index (vnm->interface_main.sw_interfaces, sw_if_index))
429 rv = VNET_API_ERROR_INVALID_SW_IF_INDEX_2;
433 si = vnet_get_sw_interface (vnm, unnumbered_sw_if_index);
437 si->flags |= VNET_SW_INTERFACE_FLAG_UNNUMBERED;
438 si->unnumbered_sw_if_index = sw_if_index;
439 ip4_sw_interface_enable_disable (unnumbered_sw_if_index, 1);
440 ip6_sw_interface_enable_disable (unnumbered_sw_if_index, 1);
444 si->flags &= ~(VNET_SW_INTERFACE_FLAG_UNNUMBERED);
445 si->unnumbered_sw_if_index = (u32) ~ 0;
446 ip4_sw_interface_enable_disable (unnumbered_sw_if_index, 0);
447 ip6_sw_interface_enable_disable (unnumbered_sw_if_index, 0);
451 REPLY_MACRO (VL_API_SW_INTERFACE_SET_UNNUMBERED_REPLY);
455 vl_api_sw_interface_clear_stats_t_handler (vl_api_sw_interface_clear_stats_t *
458 vl_api_sw_interface_clear_stats_reply_t *rmp;
460 vnet_main_t *vnm = vnet_get_main ();
461 vnet_interface_main_t *im = &vnm->interface_main;
462 vlib_simple_counter_main_t *sm;
463 vlib_combined_counter_main_t *cm;
464 static vnet_main_t **my_vnet_mains;
465 int i, j, n_counters;
468 if (mp->sw_if_index != ~0)
469 VALIDATE_SW_IF_INDEX (mp);
471 vec_reset_length (my_vnet_mains);
473 for (i = 0; i < vec_len (vnet_mains); i++)
476 vec_add1 (my_vnet_mains, vnet_mains[i]);
479 if (vec_len (vnet_mains) == 0)
480 vec_add1 (my_vnet_mains, vnm);
482 n_counters = vec_len (im->combined_sw_if_counters);
484 for (j = 0; j < n_counters; j++)
486 for (i = 0; i < vec_len (my_vnet_mains); i++)
488 im = &my_vnet_mains[i]->interface_main;
489 cm = im->combined_sw_if_counters + j;
490 if (mp->sw_if_index == (u32) ~ 0)
491 vlib_clear_combined_counters (cm);
493 vlib_zero_combined_counter (cm, ntohl (mp->sw_if_index));
497 n_counters = vec_len (im->sw_if_counters);
499 for (j = 0; j < n_counters; j++)
501 for (i = 0; i < vec_len (my_vnet_mains); i++)
503 im = &my_vnet_mains[i]->interface_main;
504 sm = im->sw_if_counters + j;
505 if (mp->sw_if_index == (u32) ~ 0)
506 vlib_clear_simple_counters (sm);
508 vlib_zero_simple_counter (sm, ntohl (mp->sw_if_index));
512 BAD_SW_IF_INDEX_LABEL;
514 REPLY_MACRO (VL_API_SW_INTERFACE_CLEAR_STATS_REPLY);
517 #define API_LINK_STATE_EVENT 1
518 #define API_ADMIN_UP_DOWN_EVENT 2
521 event_data_cmp (void *a1, void *a2)
526 return (word) e1[0] - (word) e2[0];
530 send_sw_interface_flags (vpe_api_main_t * am,
531 unix_shared_memory_queue_t * q,
532 vnet_sw_interface_t * swif)
534 vl_api_sw_interface_set_flags_t *mp;
535 vnet_main_t *vnm = am->vnet_main;
537 vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm,
539 mp = vl_msg_api_alloc (sizeof (*mp));
540 memset (mp, 0, sizeof (*mp));
541 mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_SET_FLAGS);
542 mp->sw_if_index = ntohl (swif->sw_if_index);
544 mp->admin_up_down = (swif->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? 1 : 0;
545 mp->link_up_down = (hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP) ? 1 : 0;
546 vl_msg_api_send_shmem (q, (u8 *) & mp);
550 link_state_process (vlib_main_t * vm,
551 vlib_node_runtime_t * rt, vlib_frame_t * f)
553 vpe_api_main_t *vam = &vpe_api_main;
554 vnet_main_t *vnm = vam->vnet_main;
555 vnet_sw_interface_t *swif;
556 uword *event_data = 0;
557 vpe_client_registration_t *reg;
559 u32 prev_sw_if_index;
560 unix_shared_memory_queue_t *q;
562 vam->link_state_process_up = 1;
566 vlib_process_wait_for_event (vm);
568 /* Unified list of changed link or admin state sw_if_indices */
569 vlib_process_get_events_with_type
570 (vm, &event_data, API_LINK_STATE_EVENT);
571 vlib_process_get_events_with_type
572 (vm, &event_data, API_ADMIN_UP_DOWN_EVENT);
574 /* Sort, so we can eliminate duplicates */
575 vec_sort_with_function (event_data, event_data_cmp);
577 prev_sw_if_index = ~0;
579 for (i = 0; i < vec_len (event_data); i++)
581 /* Only one message per swif */
582 if (prev_sw_if_index == event_data[i])
584 prev_sw_if_index = event_data[i];
587 pool_foreach(reg, vam->interface_events_registrations,
589 q = vl_api_client_index_to_input_queue (reg->client_index);
592 /* sw_interface may be deleted already */
593 if (!pool_is_free_index (vnm->interface_main.sw_interfaces,
596 swif = vnet_get_sw_interface (vnm, event_data[i]);
597 send_sw_interface_flags (vam, q, swif);
603 vec_reset_length (event_data);
609 static clib_error_t *link_up_down_function (vnet_main_t * vm, u32 hw_if_index,
611 static clib_error_t *admin_up_down_function (vnet_main_t * vm,
612 u32 hw_if_index, u32 flags);
615 VLIB_REGISTER_NODE (link_state_process_node,static) = {
616 .function = link_state_process,
617 .type = VLIB_NODE_TYPE_PROCESS,
618 .name = "vpe-link-state-process",
622 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (admin_up_down_function);
623 VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION (link_up_down_function);
625 static clib_error_t *
626 link_up_down_function (vnet_main_t * vm, u32 hw_if_index, u32 flags)
628 vpe_api_main_t *vam = &vpe_api_main;
629 vnet_hw_interface_t *hi = vnet_get_hw_interface (vm, hw_if_index);
631 if (vam->link_state_process_up)
632 vlib_process_signal_event (vam->vlib_main,
633 link_state_process_node.index,
634 API_LINK_STATE_EVENT, hi->sw_if_index);
638 static clib_error_t *
639 admin_up_down_function (vnet_main_t * vm, u32 sw_if_index, u32 flags)
641 vpe_api_main_t *vam = &vpe_api_main;
644 * Note: it's perfectly fair to set a subif admin up / admin down.
645 * Note the subtle distinction between this routine and the previous
648 if (vam->link_state_process_up)
649 vlib_process_signal_event (vam->vlib_main,
650 link_state_process_node.index,
651 API_ADMIN_UP_DOWN_EVENT, sw_if_index);
655 static void vl_api_sw_interface_tag_add_del_t_handler
656 (vl_api_sw_interface_tag_add_del_t * mp)
658 vnet_main_t *vnm = vnet_get_main ();
659 vl_api_sw_interface_tag_add_del_reply_t *rmp;
662 u32 sw_if_index = ntohl (mp->sw_if_index);
664 VALIDATE_SW_IF_INDEX (mp);
670 rv = VNET_API_ERROR_INVALID_VALUE;
674 mp->tag[ARRAY_LEN (mp->tag) - 1] = 0;
675 tag = format (0, "%s%c", mp->tag, 0);
676 vnet_set_sw_interface_tag (vnm, tag, sw_if_index);
679 vnet_clear_sw_interface_tag (vnm, sw_if_index);
681 BAD_SW_IF_INDEX_LABEL;
683 REPLY_MACRO (VL_API_SW_INTERFACE_TAG_ADD_DEL_REPLY);
688 * Add vpe's API message handlers to the table.
689 * vlib has alread mapped shared memory and
690 * added the client registration handlers.
691 * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
693 #define vl_msg_name_crc_list
694 #include <vnet/interface.api.h>
695 #undef vl_msg_name_crc_list
698 setup_message_id_table (api_main_t * am)
700 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
701 foreach_vl_msg_name_crc_interface;
705 pub_sub_handler (interface_events, INTERFACE_EVENTS);
707 static clib_error_t *
708 interface_api_hookup (vlib_main_t * vm)
710 api_main_t *am = &api_main;
713 vl_msg_api_set_handlers(VL_API_##N, #n, \
714 vl_api_##n##_t_handler, \
716 vl_api_##n##_t_endian, \
717 vl_api_##n##_t_print, \
718 sizeof(vl_api_##n##_t), 1);
723 * Set up the (msg_name, crc, message-id) table
725 setup_message_id_table (am);
730 VLIB_API_INIT_FUNCTION (interface_api_hookup);
733 * fd.io coding-style-patch-verification: ON
736 * eval: (c-set-style "gnu")