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>
30 #include <vnet/vnet_msg_enum.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 _(MPLS_IP_BIND_UNBIND, mpls_ip_bind_unbind) \
50 _(MPLS_ROUTE_ADD_DEL, mpls_route_add_del) \
51 _(MPLS_TUNNEL_ADD_DEL, mpls_tunnel_add_del) \
52 _(MPLS_TUNNEL_DUMP, mpls_tunnel_dump) \
53 _(MPLS_FIB_DUMP, mpls_fib_dump)
55 extern void stats_dslock_with_hint (int hint, int tag);
56 extern void stats_dsunlock (void);
59 mpls_ip_bind_unbind_handler (vnet_main_t * vnm,
60 vl_api_mpls_ip_bind_unbind_t * mp)
62 u32 mpls_fib_index, ip_fib_index;
65 fib_table_find (FIB_PROTOCOL_MPLS, ntohl (mp->mb_mpls_table_id));
67 if (~0 == mpls_fib_index)
69 if (mp->mb_create_table_if_needed)
72 fib_table_find_or_create_and_lock (FIB_PROTOCOL_MPLS,
73 ntohl (mp->mb_mpls_table_id));
76 return VNET_API_ERROR_NO_SUCH_FIB;
79 ip_fib_index = fib_table_find ((mp->mb_is_ip4 ?
82 ntohl (mp->mb_ip_table_id));
83 if (~0 == ip_fib_index)
84 return VNET_API_ERROR_NO_SUCH_FIB;
87 .fp_len = mp->mb_address_length,
92 pfx.fp_proto = FIB_PROTOCOL_IP4;
93 clib_memcpy (&pfx.fp_addr.ip4, mp->mb_address,
94 sizeof (pfx.fp_addr.ip4));
98 pfx.fp_proto = FIB_PROTOCOL_IP6;
99 clib_memcpy (&pfx.fp_addr.ip6, mp->mb_address,
100 sizeof (pfx.fp_addr.ip6));
104 fib_table_entry_local_label_add (ip_fib_index, &pfx,
105 ntohl (mp->mb_label));
107 fib_table_entry_local_label_remove (ip_fib_index, &pfx,
108 ntohl (mp->mb_label));
114 vl_api_mpls_ip_bind_unbind_t_handler (vl_api_mpls_ip_bind_unbind_t * mp)
116 vl_api_mpls_ip_bind_unbind_reply_t *rmp;
120 vnm = vnet_get_main ();
123 rv = mpls_ip_bind_unbind_handler (vnm, mp);
124 rv = (rv == 0) ? vnm->api_errno : rv;
126 REPLY_MACRO (VL_API_MPLS_IP_BIND_UNBIND_REPLY);
130 mpls_route_add_del_t_handler (vnet_main_t * vnm,
131 vl_api_mpls_route_add_del_t * mp)
133 u32 fib_index, next_hop_fib_index;
134 mpls_label_t *label_stack = NULL;
135 int rv, ii, n_labels;;
139 .fp_proto = FIB_PROTOCOL_MPLS,
140 .fp_eos = mp->mr_eos,
141 .fp_label = ntohl (mp->mr_label),
145 if (mp->mr_next_hop_proto_is_ip4)
147 pfx.fp_payload_proto = DPO_PROTO_IP4;
151 pfx.fp_payload_proto = DPO_PROTO_IP6;
156 pfx.fp_payload_proto = DPO_PROTO_MPLS;
159 rv = add_del_route_check (FIB_PROTOCOL_MPLS,
161 mp->mr_next_hop_sw_if_index,
162 dpo_proto_to_fib (pfx.fp_payload_proto),
163 mp->mr_next_hop_table_id,
164 mp->mr_create_table_if_needed,
165 &fib_index, &next_hop_fib_index);
171 memset (&nh, 0, sizeof (nh));
173 if (mp->mr_next_hop_proto_is_ip4)
174 memcpy (&nh.ip4, mp->mr_next_hop, sizeof (nh.ip4));
176 memcpy (&nh.ip6, mp->mr_next_hop, sizeof (nh.ip6));
178 n_labels = mp->mr_next_hop_n_out_labels;
181 else if (1 == n_labels)
182 vec_add1 (label_stack, ntohl (mp->mr_next_hop_out_label_stack[0]));
185 vec_validate (label_stack, n_labels - 1);
186 for (ii = 0; ii < n_labels; ii++)
187 label_stack[ii] = ntohl (mp->mr_next_hop_out_label_stack[ii]);
190 return (add_del_route_t_handler (mp->mr_is_multipath, mp->mr_is_add, 0, // mp->is_drop,
191 0, // mp->is_unreach,
192 0, // mp->is_prohibit,
195 mp->mr_classify_table_index,
196 mp->mr_is_resolve_host,
197 mp->mr_is_resolve_attached,
199 mp->mr_next_hop_proto_is_ip4,
200 &nh, ntohl (mp->mr_next_hop_sw_if_index),
202 mp->mr_next_hop_weight,
203 ntohl (mp->mr_next_hop_via_label),
208 vl_api_mpls_route_add_del_t_handler (vl_api_mpls_route_add_del_t * mp)
210 vl_api_mpls_route_add_del_reply_t *rmp;
214 vnm = vnet_get_main ();
217 rv = mpls_route_add_del_t_handler (vnm, mp);
219 rv = (rv == 0) ? vnm->api_errno : rv;
221 REPLY_MACRO (VL_API_MPLS_ROUTE_ADD_DEL_REPLY);
225 vl_api_mpls_tunnel_add_del_t_handler (vl_api_mpls_tunnel_add_del_t * mp)
227 vl_api_mpls_tunnel_add_del_reply_t *rmp;
229 u32 tunnel_sw_if_index;
232 stats_dslock_with_hint (1 /* release hint */ , 5 /* tag */ );
236 fib_route_path_t rpath, *rpaths = NULL;
237 mpls_label_t *label_stack = NULL;
239 memset (&rpath, 0, sizeof (rpath));
241 if (mp->mt_next_hop_proto_is_ip4)
243 rpath.frp_proto = FIB_PROTOCOL_IP4;
244 clib_memcpy (&rpath.frp_addr.ip4,
245 mp->mt_next_hop, sizeof (rpath.frp_addr.ip4));
249 rpath.frp_proto = FIB_PROTOCOL_IP6;
250 clib_memcpy (&rpath.frp_addr.ip6,
251 mp->mt_next_hop, sizeof (rpath.frp_addr.ip6));
253 rpath.frp_sw_if_index = ntohl (mp->mt_next_hop_sw_if_index);
255 for (ii = 0; ii < mp->mt_next_hop_n_out_labels; ii++)
256 vec_add1 (label_stack, ntohl (mp->mt_next_hop_out_label_stack[ii]));
258 vec_add1 (rpaths, rpath);
260 vnet_mpls_tunnel_add (rpaths, label_stack,
261 mp->mt_l2_only, &tunnel_sw_if_index);
263 vec_free (label_stack);
267 tunnel_sw_if_index = ntohl (mp->mt_sw_if_index);
268 vnet_mpls_tunnel_del (tunnel_sw_if_index);
274 REPLY_MACRO2(VL_API_MPLS_TUNNEL_ADD_DEL_REPLY,
276 rmp->sw_if_index = ntohl(tunnel_sw_if_index);
281 typedef struct mpls_tunnel_send_walk_ctx_t_
283 unix_shared_memory_queue_t *q;
286 } mpls_tunnel_send_walk_ctx_t;
289 send_mpls_tunnel_entry (u32 mti, void *arg)
291 mpls_tunnel_send_walk_ctx_t *ctx;
292 vl_api_mpls_tunnel_details_t *mp;
293 const mpls_tunnel_t *mt;
298 if (~0 != ctx->index && mti != ctx->index)
301 mt = mpls_tunnel_get (mti);
302 nlabels = vec_len (mt->mt_label_stack);
304 mp = vl_msg_api_alloc (sizeof (*mp) + nlabels * sizeof (u32));
305 memset (mp, 0, sizeof (*mp));
306 mp->_vl_msg_id = ntohs (VL_API_MPLS_TUNNEL_DETAILS);
307 mp->context = ctx->context;
309 mp->tunnel_index = ntohl (mti);
310 memcpy (mp->mt_next_hop_out_labels,
311 mt->mt_label_stack, nlabels * sizeof (u32));
315 vl_msg_api_send_shmem (ctx->q, (u8 *) & mp);
319 vl_api_mpls_tunnel_dump_t_handler (vl_api_mpls_tunnel_dump_t * mp)
321 unix_shared_memory_queue_t *q;
323 q = vl_api_client_index_to_input_queue (mp->client_index);
327 mpls_tunnel_send_walk_ctx_t ctx = {
329 .index = ntohl (mp->tunnel_index),
330 .context = mp->context,
332 mpls_tunnel_walk (send_mpls_tunnel_entry, &ctx);
336 send_mpls_fib_details (vpe_api_main_t * am,
337 unix_shared_memory_queue_t * q,
338 u32 table_id, u32 label, u32 eos,
339 fib_route_path_encode_t * api_rpaths, u32 context)
341 vl_api_mpls_fib_details_t *mp;
342 fib_route_path_encode_t *api_rpath;
343 vl_api_fib_path2_t *fp;
346 path_count = vec_len (api_rpaths);
347 mp = vl_msg_api_alloc (sizeof (*mp) + path_count * sizeof (*fp));
350 memset (mp, 0, sizeof (*mp));
351 mp->_vl_msg_id = ntohs (VL_API_MPLS_FIB_DETAILS);
352 mp->context = context;
354 mp->table_id = htonl (table_id);
356 mp->label = htonl (label);
358 mp->count = htonl (path_count);
360 vec_foreach (api_rpath, api_rpaths)
362 memset (fp, 0, sizeof (*fp));
363 fp->weight = htonl (api_rpath->rpath.frp_weight);
364 fp->sw_if_index = htonl (api_rpath->rpath.frp_sw_if_index);
365 copy_fib_next_hop (api_rpath, fp);
369 vl_msg_api_send_shmem (q, (u8 *) & mp);
373 vl_api_mpls_fib_dump_t_handler (vl_api_mpls_fib_dump_t * mp)
375 vpe_api_main_t *am = &vpe_api_main;
376 unix_shared_memory_queue_t *q;
377 mpls_main_t *mm = &mpls_main;
378 fib_table_t *fib_table;
379 fib_node_index_t lfei, *lfeip, *lfeis = NULL;
383 fib_route_path_encode_t *api_rpaths;
385 q = vl_api_client_index_to_input_queue (mp->client_index);
390 pool_foreach (fib_table, mm->fibs,
392 hash_foreach(key, lfei, fib_table->mpls.mf_entries,
394 vec_add1(lfeis, lfei);
398 vec_sort_with_function (lfeis, fib_entry_cmp_for_sort);
400 vec_foreach (lfeip, lfeis)
402 fib_entry_get_prefix (*lfeip, &pfx);
403 fib_index = fib_entry_get_fib_index (*lfeip);
404 fib_table = fib_table_get (fib_index, pfx.fp_proto);
406 fib_entry_encode (*lfeip, &api_rpaths);
407 send_mpls_fib_details (am, q,
408 fib_table->ft_table_id,
409 pfx.fp_label, pfx.fp_eos, api_rpaths, mp->context);
410 vec_free (api_rpaths);
418 * Add vpe's API message handlers to the table.
419 * vlib has alread mapped shared memory and
420 * added the client registration handlers.
421 * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
423 #define vl_msg_name_crc_list
424 #include <vnet/vnet_all_api_h.h>
425 #undef vl_msg_name_crc_list
428 setup_message_id_table (api_main_t * am)
430 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
431 foreach_vl_msg_name_crc_mpls;
435 static clib_error_t *
436 mpls_api_hookup (vlib_main_t * vm)
438 api_main_t *am = &api_main;
441 vl_msg_api_set_handlers(VL_API_##N, #n, \
442 vl_api_##n##_t_handler, \
444 vl_api_##n##_t_endian, \
445 vl_api_##n##_t_print, \
446 sizeof(vl_api_##n##_t), 1);
451 * Trace space for 8 MPLS encap labels
453 am->api_trace_cfg[VL_API_MPLS_TUNNEL_ADD_DEL].size += 8 * sizeof (u32);
456 * Set up the (msg_name, crc, message-id) table
458 setup_message_id_table (am);
463 VLIB_API_INIT_FUNCTION (mpls_api_hookup);
466 * fd.io coding-style-patch-verification: ON
469 * eval: (c-set-style "gnu")