4 * Copyright (c) 2012 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/mpls/mpls.h>
20 #include <vnet/fib/ip4_fib.h>
21 #include <vnet/fib/mpls_fib.h>
23 const static char* mpls_eos_bit_names[] = MPLS_EOS_BITS;
25 mpls_main_t mpls_main;
27 u8 * format_mpls_unicast_label (u8 * s, va_list * args)
29 mpls_label_t label = va_arg (*args, mpls_label_t);
32 case MPLS_IETF_IPV4_EXPLICIT_NULL_LABEL:
33 s = format (s, "%s", MPLS_IETF_IPV4_EXPLICIT_NULL_STRING);
35 case MPLS_IETF_ROUTER_ALERT_LABEL:
36 s = format (s, "%s", MPLS_IETF_ROUTER_ALERT_STRING);
38 case MPLS_IETF_IPV6_EXPLICIT_NULL_LABEL:
39 s = format (s, "%s", MPLS_IETF_IPV6_EXPLICIT_NULL_STRING);
41 case MPLS_IETF_IMPLICIT_NULL_LABEL:
42 s = format (s, "%s", MPLS_IETF_IMPLICIT_NULL_STRING);
44 case MPLS_IETF_ELI_LABEL:
45 s = format (s, "%s", MPLS_IETF_ELI_STRING);
47 case MPLS_IETF_GAL_LABEL:
48 s = format (s, "%s", MPLS_IETF_GAL_STRING);
51 s = format (s, "%d", label);
57 uword unformat_mpls_unicast_label (unformat_input_t * input, va_list * args)
59 mpls_label_t *label = va_arg (*args, mpls_label_t*);
61 if (unformat (input, MPLS_IETF_IPV4_EXPLICIT_NULL_STRING))
62 *label = MPLS_IETF_IPV4_EXPLICIT_NULL_LABEL;
63 else if (unformat (input, MPLS_IETF_IPV6_EXPLICIT_NULL_STRING))
64 *label = MPLS_IETF_IPV6_EXPLICIT_NULL_LABEL;
65 else if (unformat (input, MPLS_IETF_ROUTER_ALERT_STRING))
66 *label = MPLS_IETF_ROUTER_ALERT_LABEL;
67 else if (unformat (input, MPLS_IETF_IMPLICIT_NULL_STRING))
68 *label = MPLS_IETF_IMPLICIT_NULL_LABEL;
69 else if (unformat (input, MPLS_IETF_IPV4_EXPLICIT_NULL_BRIEF_STRING))
70 *label = MPLS_IETF_IPV4_EXPLICIT_NULL_LABEL;
71 else if (unformat (input, MPLS_IETF_IPV6_EXPLICIT_NULL_BRIEF_STRING))
72 *label = MPLS_IETF_IPV6_EXPLICIT_NULL_LABEL;
73 else if (unformat (input, MPLS_IETF_ROUTER_ALERT_BRIEF_STRING))
74 *label = MPLS_IETF_ROUTER_ALERT_LABEL;
75 else if (unformat (input, MPLS_IETF_IMPLICIT_NULL_BRIEF_STRING))
76 *label = MPLS_IETF_IMPLICIT_NULL_LABEL;
77 else if (unformat (input, "%d", label))
85 u8 * format_mpls_eos_bit (u8 * s, va_list * args)
87 mpls_eos_bit_t eb = va_arg (*args, mpls_eos_bit_t);
89 ASSERT(eb <= MPLS_EOS);
91 s = format(s, "%s", mpls_eos_bit_names[eb]);
96 u8 * format_mpls_header (u8 * s, va_list * args)
98 mpls_unicast_header_t hdr = va_arg (*args, mpls_unicast_header_t);
100 return (format(s, "[%U:%d:%d:%U]",
101 format_mpls_unicast_label,
102 vnet_mpls_uc_get_label(hdr.label_exp_s_ttl),
103 vnet_mpls_uc_get_ttl(hdr.label_exp_s_ttl),
104 vnet_mpls_uc_get_exp(hdr.label_exp_s_ttl),
106 vnet_mpls_uc_get_s(hdr.label_exp_s_ttl)));
110 unformat_mpls_header (unformat_input_t * input, va_list * args)
112 u8 ** result = va_arg (*args, u8 **);
113 mpls_unicast_header_t _h, * h = &_h;
114 u32 label, label_exp_s_ttl;
116 if (! unformat (input, "MPLS %d", &label))
119 label_exp_s_ttl = (label<<12) | (1<<8) /* s-bit */ | 0xFF;
120 h->label_exp_s_ttl = clib_host_to_net_u32 (label_exp_s_ttl);
122 /* Add gre, mpls headers to result. */
125 u32 h_n_bytes = sizeof (h[0]);
127 vec_add2 (*result, p, h_n_bytes);
128 clib_memcpy (p, h, h_n_bytes);
135 unformat_mpls_label_net_byte_order (unformat_input_t * input,
138 u32 * result = va_arg (*args, u32 *);
141 if (!unformat (input, "MPLS: label %d", &label))
144 label = (label<<12) | (1<<8) /* s-bit set */ | 0xFF /* ttl */;
146 *result = clib_host_to_net_u32 (label);
150 u8 * format_mpls_unicast_header_host_byte_order (u8 * s, va_list * args)
152 mpls_unicast_header_t *h = va_arg(*args, mpls_unicast_header_t *);
153 u32 label = h->label_exp_s_ttl;
155 s = format (s, "label %d exp %d, s %d, ttl %d",
156 vnet_mpls_uc_get_label (label),
157 vnet_mpls_uc_get_exp (label),
158 vnet_mpls_uc_get_s (label),
159 vnet_mpls_uc_get_ttl (label));
163 u8 * format_mpls_unicast_header_net_byte_order (u8 * s, va_list * args)
165 mpls_unicast_header_t *h = va_arg(*args, mpls_unicast_header_t *);
166 mpls_unicast_header_t h_host;
168 h_host.label_exp_s_ttl = clib_net_to_host_u32 (h->label_exp_s_ttl);
170 return format (s, "%U", format_mpls_unicast_header_host_byte_order,
183 mpls_dest_cmp(void * a1, void * a2)
185 show_mpls_fib_t * r1 = a1;
186 show_mpls_fib_t * r2 = a2;
188 return clib_net_to_host_u32(r1->dest) - clib_net_to_host_u32(r2->dest);
192 mpls_fib_index_cmp(void * a1, void * a2)
194 show_mpls_fib_t * r1 = a1;
195 show_mpls_fib_t * r2 = a2;
197 return r1->fib_index - r2->fib_index;
201 mpls_label_cmp(void * a1, void * a2)
203 show_mpls_fib_t * r1 = a1;
204 show_mpls_fib_t * r2 = a2;
206 return r1->label - r2->label;
209 static clib_error_t *
210 vnet_mpls_local_label (vlib_main_t * vm,
211 unformat_input_t * input,
212 vlib_cli_command_t * cmd)
214 unformat_input_t _line_input, * line_input = &_line_input;
215 u32 table_id, is_del, is_ip, payload_proto;
216 fib_route_path_t *rpaths = NULL, rpath;
217 mpls_label_t local_label;
218 clib_error_t * error;
227 local_label = MPLS_LABEL_INVALID;
228 memset(&pfx, 0, sizeof(pfx));
229 payload_proto = DPO_PROTO_MPLS;
231 /* Get a line of input. */
232 if (! unformat_user (input, unformat_line_input, line_input))
235 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
237 if (unformat (line_input, "table %d", &table_id))
239 else if (unformat (line_input, "del"))
241 else if (unformat (line_input, "add"))
243 else if (unformat (line_input, "eos"))
244 pfx.fp_eos = MPLS_EOS;
245 else if (unformat (line_input, "non-eos"))
246 pfx.fp_eos = MPLS_NON_EOS;
247 else if (unformat (line_input, "%U/%d",
248 unformat_ip4_address,
252 pfx.fp_proto = FIB_PROTOCOL_IP4;
255 else if (unformat (line_input, "%U/%d",
256 unformat_ip6_address,
260 pfx.fp_proto = FIB_PROTOCOL_IP6;
263 else if (unformat (line_input, "via %U",
264 unformat_fib_route_path,
265 &rpath, &payload_proto))
267 pfx.fp_payload_proto = payload_proto;
268 vec_add1(rpaths, rpath);
270 else if (unformat (line_input, "%d", &local_label))
274 error = clib_error_return (0, "unkown input: %U",
275 format_unformat_error, line_input);
281 if (MPLS_LABEL_INVALID == local_label)
283 error = clib_error_return (0, "local-label required: %U",
284 format_unformat_error, input);
291 u32 fib_index = fib_table_find(pfx.fp_proto, table_id);
293 if (FIB_NODE_INDEX_INVALID == fib_index)
295 error = clib_error_return (0, "%U table-id %d does not exist",
296 format_fib_protocol, pfx.fp_proto, table_id);
302 fib_table_entry_local_label_remove(fib_index, &pfx, local_label);
306 fib_table_entry_local_label_add(fib_index, &pfx, local_label);
311 fib_node_index_t fib_index;
316 error = clib_error_return(0 , "no paths");
320 pfx.fp_proto = FIB_PROTOCOL_MPLS;
322 pfx.fp_label = local_label;
323 pfx.fp_payload_proto = rpaths[0].frp_proto;
326 * the CLI parsing stored table Ids, swap to FIB indicies
328 if (FIB_NODE_INDEX_INVALID == rpath.frp_sw_if_index)
330 fi = fib_table_find(dpo_proto_to_fib(pfx.fp_payload_proto),
331 rpaths[0].frp_fib_index);
335 error = clib_error_return(0 , "%U Via table %d does not exist",
336 format_dpo_proto, pfx.fp_payload_proto,
337 rpaths[0].frp_fib_index);
340 rpaths[0].frp_fib_index = fi;
343 fib_index = mpls_fib_index_from_table_id(table_id);
345 if (FIB_NODE_INDEX_INVALID == fib_index)
347 error = clib_error_return (0, "MPLS table-id %d does not exist",
354 fib_table_entry_path_remove2(fib_index,
361 fib_node_index_t lfe;
363 lfe = fib_table_entry_path_add2(fib_index,
369 if (FIB_NODE_INDEX_INVALID == lfe)
371 error = clib_error_return (0, "Failed to create %U-%U in MPLS table-id %d",
372 format_mpls_unicast_label, local_label,
373 format_mpls_eos_bit, eos,
381 unformat_free (line_input);
386 VLIB_CLI_COMMAND (mpls_local_label_command, static) = {
387 .path = "mpls local-label",
388 .function = vnet_mpls_local_label,
389 .short_help = "mpls local-label [add|del] <label-value> [eos|non-eos] via [next-hop-address] [next-hop-interface] [next-hop-table <value>] [weight <value>] [preference <value>] [udp-encap-id <value>] [ip4-lookup-in-table <value>] [ip6-lookup-in-table <value>] [mpls-lookup-in-table <value>] [resolve-via-host] [resolve-via-connected] [rx-ip4 <interface>] [out-labels <value value value>]",
393 vnet_mpls_table_cmd (vlib_main_t * vm,
394 unformat_input_t * main_input,
395 vlib_cli_command_t * cmdo)
397 unformat_input_t _line_input, *line_input = &_line_input;
398 clib_error_t *error = NULL;
399 u32 table_id, is_add;
405 /* Get a line of input. */
406 if (!unformat_user (main_input, unformat_line_input, line_input))
409 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
411 if (unformat (line_input, "%d", &table_id))
413 else if (unformat (line_input, "del"))
415 else if (unformat (line_input, "add"))
417 else if (unformat (line_input, "name %s", &name))
421 error = unformat_parse_error (line_input);
428 error = clib_error_return (0, "No table id");
435 mpls_table_create (table_id, 0, name);
439 mpls_table_delete (table_id, 0);
444 unformat_free (line_input);
450 * This command is used to add or delete MPLS Tables. All
451 * Tables must be explicitly added before that can be used,
452 * Including the default table.
455 VLIB_CLI_COMMAND (mpls_table_command, static) = {
456 .path = "mpls table",
457 .short_help = "mpls table [add|del] <table-id>",
458 .function = vnet_mpls_table_cmd,
463 mpls_fib_reset_labels (u32 fib_id)
469 static clib_error_t *
470 mpls_init (vlib_main_t * vm)
472 clib_error_t * error;
474 if ((error = vlib_call_init_function (vm, ip_main_init)))
477 return vlib_call_init_function (vm, mpls_input_init);
480 VLIB_INIT_FUNCTION (mpls_init);