2 *------------------------------------------------------------------
3 * mpls_api.c - mpls 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/mpls/mpls.h>
26 #include <vnet/mpls/mpls_tunnel.h>
27 #include <vnet/fib/fib_table.h>
28 #include <vnet/fib/fib_api.h>
29 #include <vnet/fib/mpls_fib.h>
30 #include <vnet/fib/fib_path_list.h>
32 #include <vnet/vnet_msg_enum.h>
34 #define vl_typedefs /* define message structures */
35 #include <vnet/vnet_all_api_h.h>
38 #define vl_endianfun /* define message structures */
39 #include <vnet/vnet_all_api_h.h>
42 /* instantiate all the print functions we know about */
43 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
45 #include <vnet/vnet_all_api_h.h>
48 #include <vlibapi/api_helper_macros.h>
50 #define foreach_vpe_api_msg \
51 _(MPLS_IP_BIND_UNBIND, mpls_ip_bind_unbind) \
52 _(MPLS_ROUTE_ADD_DEL, mpls_route_add_del) \
53 _(MPLS_TABLE_ADD_DEL, mpls_table_add_del) \
54 _(MPLS_TUNNEL_ADD_DEL, mpls_tunnel_add_del) \
55 _(MPLS_TUNNEL_DUMP, mpls_tunnel_dump) \
56 _(MPLS_FIB_DUMP, mpls_fib_dump)
58 extern void stats_dslock_with_hint (int hint, int tag);
59 extern void stats_dsunlock (void);
62 vl_api_mpls_table_add_del_t_handler (vl_api_mpls_table_add_del_t * mp)
64 vl_api_mpls_table_add_del_reply_t *rmp;
68 vnm = vnet_get_main ();
72 rv = (rv == 0) ? vnm->api_errno : rv;
74 REPLY_MACRO (VL_API_MPLS_TABLE_ADD_DEL_REPLY);
78 mpls_ip_bind_unbind_handler (vnet_main_t * vnm,
79 vl_api_mpls_ip_bind_unbind_t * mp)
81 u32 mpls_fib_index, ip_fib_index;
84 fib_table_find (FIB_PROTOCOL_MPLS, ntohl (mp->mb_mpls_table_id));
86 if (~0 == mpls_fib_index)
88 if (mp->mb_create_table_if_needed)
91 fib_table_find_or_create_and_lock (FIB_PROTOCOL_MPLS,
92 ntohl (mp->mb_mpls_table_id));
95 return VNET_API_ERROR_NO_SUCH_FIB;
98 ip_fib_index = fib_table_find ((mp->mb_is_ip4 ?
101 ntohl (mp->mb_ip_table_id));
102 if (~0 == ip_fib_index)
103 return VNET_API_ERROR_NO_SUCH_FIB;
106 .fp_len = mp->mb_address_length,
111 pfx.fp_proto = FIB_PROTOCOL_IP4;
112 clib_memcpy (&pfx.fp_addr.ip4, mp->mb_address,
113 sizeof (pfx.fp_addr.ip4));
117 pfx.fp_proto = FIB_PROTOCOL_IP6;
118 clib_memcpy (&pfx.fp_addr.ip6, mp->mb_address,
119 sizeof (pfx.fp_addr.ip6));
123 fib_table_entry_local_label_add (ip_fib_index, &pfx,
124 ntohl (mp->mb_label));
126 fib_table_entry_local_label_remove (ip_fib_index, &pfx,
127 ntohl (mp->mb_label));
133 vl_api_mpls_ip_bind_unbind_t_handler (vl_api_mpls_ip_bind_unbind_t * mp)
135 vl_api_mpls_ip_bind_unbind_reply_t *rmp;
139 vnm = vnet_get_main ();
142 rv = mpls_ip_bind_unbind_handler (vnm, mp);
143 rv = (rv == 0) ? vnm->api_errno : rv;
145 REPLY_MACRO (VL_API_MPLS_IP_BIND_UNBIND_REPLY);
149 mpls_route_add_del_t_handler (vnet_main_t * vnm,
150 vl_api_mpls_route_add_del_t * mp)
152 u32 fib_index, next_hop_fib_index;
153 mpls_label_t *label_stack = NULL;
154 int rv, ii, n_labels;;
158 .fp_proto = FIB_PROTOCOL_MPLS,
159 .fp_eos = mp->mr_eos,
160 .fp_label = ntohl (mp->mr_label),
164 pfx.fp_payload_proto = mp->mr_next_hop_proto;
168 pfx.fp_payload_proto = DPO_PROTO_MPLS;
171 rv = add_del_route_check (FIB_PROTOCOL_MPLS,
173 mp->mr_next_hop_sw_if_index,
174 pfx.fp_payload_proto,
175 mp->mr_next_hop_table_id,
176 mp->mr_create_table_if_needed,
178 &fib_index, &next_hop_fib_index);
184 memset (&nh, 0, sizeof (nh));
186 if (DPO_PROTO_IP4 == mp->mr_next_hop_proto)
187 memcpy (&nh.ip4, mp->mr_next_hop, sizeof (nh.ip4));
188 else if (DPO_PROTO_IP6 == mp->mr_next_hop_proto)
189 memcpy (&nh.ip6, mp->mr_next_hop, sizeof (nh.ip6));
191 n_labels = mp->mr_next_hop_n_out_labels;
194 else if (1 == n_labels)
195 vec_add1 (label_stack, ntohl (mp->mr_next_hop_out_label_stack[0]));
198 vec_validate (label_stack, n_labels - 1);
199 for (ii = 0; ii < n_labels; ii++)
200 label_stack[ii] = ntohl (mp->mr_next_hop_out_label_stack[ii]);
203 return (add_del_route_t_handler (mp->mr_is_multipath, mp->mr_is_add, 0, // mp->is_drop,
204 0, // mp->is_unreach,
205 0, // mp->is_prohibit,
209 mp->mr_classify_table_index,
210 mp->mr_is_resolve_host,
211 mp->mr_is_resolve_attached,
212 mp->mr_is_interface_rx,
215 mp->mr_next_hop_proto,
216 &nh, ntohl (mp->mr_next_hop_sw_if_index),
218 mp->mr_next_hop_weight,
219 mp->mr_next_hop_preference,
220 ntohl (mp->mr_next_hop_via_label),
225 vl_api_mpls_route_add_del_t_handler (vl_api_mpls_route_add_del_t * mp)
227 vl_api_mpls_route_add_del_reply_t *rmp;
231 vnm = vnet_get_main ();
234 rv = mpls_route_add_del_t_handler (vnm, mp);
236 rv = (rv == 0) ? vnm->api_errno : rv;
238 REPLY_MACRO (VL_API_MPLS_ROUTE_ADD_DEL_REPLY);
242 vl_api_mpls_tunnel_add_del_t_handler (vl_api_mpls_tunnel_add_del_t * mp)
244 vl_api_mpls_tunnel_add_del_reply_t *rmp;
246 u32 tunnel_sw_if_index;
248 fib_route_path_t rpath, *rpaths = NULL;
250 memset (&rpath, 0, sizeof (rpath));
252 stats_dslock_with_hint (1 /* release hint */ , 5 /* tag */ );
254 if (mp->mt_next_hop_proto_is_ip4)
256 rpath.frp_proto = DPO_PROTO_IP4;
257 clib_memcpy (&rpath.frp_addr.ip4,
258 mp->mt_next_hop, sizeof (rpath.frp_addr.ip4));
262 rpath.frp_proto = DPO_PROTO_IP6;
263 clib_memcpy (&rpath.frp_addr.ip6,
264 mp->mt_next_hop, sizeof (rpath.frp_addr.ip6));
266 rpath.frp_sw_if_index = ntohl (mp->mt_next_hop_sw_if_index);
267 rpath.frp_weight = 1;
271 for (ii = 0; ii < mp->mt_next_hop_n_out_labels; ii++)
272 vec_add1 (rpath.frp_label_stack,
273 ntohl (mp->mt_next_hop_out_label_stack[ii]));
276 vec_add1 (rpaths, rpath);
278 tunnel_sw_if_index = ntohl (mp->mt_sw_if_index);
282 if (~0 == tunnel_sw_if_index)
283 tunnel_sw_if_index = vnet_mpls_tunnel_create (mp->mt_l2_only,
284 mp->mt_is_multicast);
285 vnet_mpls_tunnel_path_add (tunnel_sw_if_index, rpaths);
289 tunnel_sw_if_index = ntohl (mp->mt_sw_if_index);
290 if (!vnet_mpls_tunnel_path_remove (tunnel_sw_if_index, rpaths))
291 vnet_mpls_tunnel_del (tunnel_sw_if_index);
299 REPLY_MACRO2(VL_API_MPLS_TUNNEL_ADD_DEL_REPLY,
301 rmp->sw_if_index = ntohl(tunnel_sw_if_index);
306 typedef struct mpls_tunnel_send_walk_ctx_t_
308 unix_shared_memory_queue_t *q;
311 } mpls_tunnel_send_walk_ctx_t;
314 send_mpls_tunnel_entry (u32 mti, void *arg)
316 fib_route_path_encode_t *api_rpaths, *api_rpath;
317 mpls_tunnel_send_walk_ctx_t *ctx;
318 vl_api_mpls_tunnel_details_t *mp;
319 const mpls_tunnel_t *mt;
320 vl_api_fib_path2_t *fp;
325 if (~0 != ctx->index && mti != ctx->index)
328 mt = mpls_tunnel_get (mti);
329 n = fib_path_list_get_n_paths (mt->mt_path_list);
331 mp = vl_msg_api_alloc (sizeof (*mp) + n * sizeof (vl_api_fib_path2_t));
332 memset (mp, 0, sizeof (*mp) + n * sizeof (vl_api_fib_path2_t));
334 mp->_vl_msg_id = ntohs (VL_API_MPLS_TUNNEL_DETAILS);
335 mp->context = ctx->context;
337 mp->mt_tunnel_index = ntohl (mti);
338 mp->mt_count = ntohl (n);
340 fib_path_list_walk (mt->mt_path_list, fib_path_encode, &api_rpaths);
343 vec_foreach (api_rpath, api_rpaths)
345 memset (fp, 0, sizeof (*fp));
347 fp->weight = api_rpath->rpath.frp_weight;
348 fp->preference = api_rpath->rpath.frp_preference;
349 fp->sw_if_index = htonl (api_rpath->rpath.frp_sw_if_index);
350 copy_fib_next_hop (api_rpath, fp);
355 // memcpy (mp->mt_next_hop_out_labels,
356 // mt->mt_label_stack, nlabels * sizeof (u32));
359 vl_msg_api_send_shmem (ctx->q, (u8 *) & mp);
363 vl_api_mpls_tunnel_dump_t_handler (vl_api_mpls_tunnel_dump_t * mp)
365 unix_shared_memory_queue_t *q;
367 q = vl_api_client_index_to_input_queue (mp->client_index);
371 mpls_tunnel_send_walk_ctx_t ctx = {
373 .index = ntohl (mp->tunnel_index),
374 .context = mp->context,
376 mpls_tunnel_walk (send_mpls_tunnel_entry, &ctx);
380 send_mpls_fib_details (vpe_api_main_t * am,
381 unix_shared_memory_queue_t * q,
382 u32 table_id, u32 label, u32 eos,
383 fib_route_path_encode_t * api_rpaths, u32 context)
385 vl_api_mpls_fib_details_t *mp;
386 fib_route_path_encode_t *api_rpath;
387 vl_api_fib_path2_t *fp;
390 path_count = vec_len (api_rpaths);
391 mp = vl_msg_api_alloc (sizeof (*mp) + path_count * sizeof (*fp));
394 memset (mp, 0, sizeof (*mp));
395 mp->_vl_msg_id = ntohs (VL_API_MPLS_FIB_DETAILS);
396 mp->context = context;
398 mp->table_id = htonl (table_id);
400 mp->label = htonl (label);
402 mp->count = htonl (path_count);
404 vec_foreach (api_rpath, api_rpaths)
406 memset (fp, 0, sizeof (*fp));
407 fp->weight = api_rpath->rpath.frp_weight;
408 fp->preference = api_rpath->rpath.frp_preference;
409 fp->sw_if_index = htonl (api_rpath->rpath.frp_sw_if_index);
410 copy_fib_next_hop (api_rpath, fp);
414 vl_msg_api_send_shmem (q, (u8 *) & mp);
417 typedef struct vl_api_mpls_fib_dump_table_walk_ctx_t_
419 fib_node_index_t *lfeis;
420 } vl_api_mpls_fib_dump_table_walk_ctx_t;
423 vl_api_mpls_fib_dump_table_walk (fib_node_index_t fei, void *arg)
425 vl_api_mpls_fib_dump_table_walk_ctx_t *ctx = arg;
427 vec_add1 (ctx->lfeis, fei);
433 vl_api_mpls_fib_dump_t_handler (vl_api_mpls_fib_dump_t * mp)
435 vpe_api_main_t *am = &vpe_api_main;
436 unix_shared_memory_queue_t *q;
437 mpls_main_t *mm = &mpls_main;
438 fib_table_t *fib_table;
439 mpls_fib_t *mpls_fib;
440 fib_node_index_t *lfeip = NULL;
443 fib_route_path_encode_t *api_rpaths;
444 vl_api_mpls_fib_dump_table_walk_ctx_t ctx = {
448 q = vl_api_client_index_to_input_queue (mp->client_index);
453 pool_foreach (mpls_fib, mm->mpls_fibs,
455 mpls_fib_table_walk (mpls_fib,
456 vl_api_mpls_fib_dump_table_walk,
460 vec_sort_with_function (ctx.lfeis, fib_entry_cmp_for_sort);
462 vec_foreach (lfeip, ctx.lfeis)
464 fib_entry_get_prefix (*lfeip, &pfx);
465 fib_index = fib_entry_get_fib_index (*lfeip);
466 fib_table = fib_table_get (fib_index, pfx.fp_proto);
468 fib_entry_encode (*lfeip, &api_rpaths);
469 send_mpls_fib_details (am, q,
470 fib_table->ft_table_id,
471 pfx.fp_label, pfx.fp_eos, api_rpaths, mp->context);
472 vec_free (api_rpaths);
475 vec_free (ctx.lfeis);
480 * Add vpe's API message handlers to the table.
481 * vlib has alread mapped shared memory and
482 * added the client registration handlers.
483 * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
485 #define vl_msg_name_crc_list
486 #include <vnet/vnet_all_api_h.h>
487 #undef vl_msg_name_crc_list
490 setup_message_id_table (api_main_t * am)
492 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
493 foreach_vl_msg_name_crc_mpls;
497 static clib_error_t *
498 mpls_api_hookup (vlib_main_t * vm)
500 api_main_t *am = &api_main;
503 vl_msg_api_set_handlers(VL_API_##N, #n, \
504 vl_api_##n##_t_handler, \
506 vl_api_##n##_t_endian, \
507 vl_api_##n##_t_print, \
508 sizeof(vl_api_##n##_t), 1);
513 * Trace space for 8 MPLS encap labels
515 am->api_trace_cfg[VL_API_MPLS_TUNNEL_ADD_DEL].size += 8 * sizeof (u32);
518 * Set up the (msg_name, crc, message-id) table
520 setup_message_id_table (am);
525 VLIB_API_INIT_FUNCTION (mpls_api_hookup);
528 * fd.io coding-style-patch-verification: ON
531 * eval: (c-set-style "gnu")