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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
41675b4c RW |
2 | /* Zebra MPLS VTY functions |
3 | * Copyright (C) 2002 Kunihiro Ishiguro | |
41675b4c RW |
4 | */ |
5 | ||
6 | #include <zebra.h> | |
7 | ||
41675b4c RW |
8 | #include "memory.h" |
9 | #include "if.h" | |
10 | #include "prefix.h" | |
11 | #include "command.h" | |
12 | #include "table.h" | |
13 | #include "rib.h" | |
14 | #include "nexthop.h" | |
15 | #include "vrf.h" | |
16 | #include "mpls.h" | |
17 | #include "lib/json.h" | |
18 | ||
19 | #include "zebra/zserv.h" | |
20 | #include "zebra/zebra_vrf.h" | |
21 | #include "zebra/zebra_mpls.h" | |
22 | #include "zebra/zebra_rnh.h" | |
23 | #include "zebra/redistribute.h" | |
24 | #include "zebra/zebra_routemap.h" | |
41675b4c | 25 | |
d62a17ae | 26 | static int zebra_mpls_transit_lsp(struct vty *vty, int add_cmd, |
27 | const char *inlabel_str, const char *gate_str, | |
28 | const char *outlabel_str, | |
29 | const char *flag_str) | |
41675b4c | 30 | { |
d62a17ae | 31 | struct zebra_vrf *zvrf; |
32 | int ret; | |
33 | enum nexthop_types_t gtype; | |
34 | union g_addr gate; | |
35 | mpls_label_t label; | |
36 | mpls_label_t in_label, out_label; | |
37 | ||
38 | if (!mpls_enabled) { | |
39 | vty_out(vty, | |
40 | "%% MPLS not turned on in kernel, ignoring command\n"); | |
41 | return CMD_WARNING_CONFIG_FAILED; | |
42 | } | |
43 | ||
9a7d1e74 | 44 | zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 45 | if (!zvrf) { |
46 | vty_out(vty, "%% Default VRF does not exist\n"); | |
47 | return CMD_WARNING_CONFIG_FAILED; | |
48 | } | |
49 | ||
50 | if (!inlabel_str) { | |
51 | vty_out(vty, "%% No Label Information\n"); | |
52 | return CMD_WARNING_CONFIG_FAILED; | |
53 | } | |
54 | ||
70e98a7f | 55 | out_label = MPLS_LABEL_IMPLICIT_NULL; /* as initialization */ |
d62a17ae | 56 | label = atoi(inlabel_str); |
57 | if (!IS_MPLS_UNRESERVED_LABEL(label)) { | |
58 | vty_out(vty, "%% Invalid label\n"); | |
59 | return CMD_WARNING_CONFIG_FAILED; | |
60 | } | |
61 | ||
62 | if (add_cmd) { | |
63 | if (!gate_str) { | |
64 | vty_out(vty, "%% No Nexthop Information\n"); | |
65 | return CMD_WARNING_CONFIG_FAILED; | |
66 | } | |
67 | if (!outlabel_str) { | |
68 | vty_out(vty, "%% No Outgoing label Information\n"); | |
69 | return CMD_WARNING_CONFIG_FAILED; | |
70 | } | |
71 | } | |
72 | ||
73 | in_label = label; | |
21683186 | 74 | gtype = NEXTHOP_TYPE_BLACKHOLE; /* as initialization */ |
d62a17ae | 75 | |
21683186 | 76 | if (gate_str) { |
77 | /* Gateway is a IPv4 or IPv6 nexthop. */ | |
78 | ret = inet_pton(AF_INET6, gate_str, &gate.ipv6); | |
a44e3106 | 79 | if (ret == 1) |
21683186 | 80 | gtype = NEXTHOP_TYPE_IPV6; |
d62a17ae | 81 | else { |
21683186 | 82 | ret = inet_pton(AF_INET, gate_str, &gate.ipv4); |
83 | if (ret == 1) | |
84 | gtype = NEXTHOP_TYPE_IPV4; | |
85 | else { | |
86 | vty_out(vty, "%% Invalid nexthop\n"); | |
87 | return CMD_WARNING_CONFIG_FAILED; | |
88 | } | |
d62a17ae | 89 | } |
90 | } | |
91 | ||
92 | if (outlabel_str) { | |
93 | if (outlabel_str[0] == 'i') | |
70e98a7f | 94 | out_label = MPLS_LABEL_IMPLICIT_NULL; |
d62a17ae | 95 | else if (outlabel_str[0] == 'e' && gtype == NEXTHOP_TYPE_IPV4) |
70e98a7f | 96 | out_label = MPLS_LABEL_IPV4_EXPLICIT_NULL; |
d62a17ae | 97 | else if (outlabel_str[0] == 'e' && gtype == NEXTHOP_TYPE_IPV6) |
70e98a7f | 98 | out_label = MPLS_LABEL_IPV6_EXPLICIT_NULL; |
d62a17ae | 99 | else |
100 | out_label = atoi(outlabel_str); | |
101 | } | |
102 | ||
103 | if (add_cmd) { | |
41675b4c | 104 | #if defined(HAVE_CUMULUS) |
d62a17ae | 105 | /* Check that label value is consistent. */ |
106 | if (!zebra_mpls_lsp_label_consistent(zvrf, in_label, out_label, | |
107 | gtype, &gate, 0)) { | |
108 | vty_out(vty, "%% Label value not consistent\n"); | |
109 | return CMD_WARNING_CONFIG_FAILED; | |
110 | } | |
41675b4c RW |
111 | #endif /* HAVE_CUMULUS */ |
112 | ||
d62a17ae | 113 | ret = zebra_mpls_static_lsp_add(zvrf, in_label, out_label, |
114 | gtype, &gate, 0); | |
115 | } else | |
116 | ret = zebra_mpls_static_lsp_del(zvrf, in_label, gtype, &gate, | |
117 | 0); | |
41675b4c | 118 | |
a44e3106 | 119 | if (ret != 0) { |
d62a17ae | 120 | vty_out(vty, "%% LSP cannot be %s\n", |
121 | add_cmd ? "added" : "deleted"); | |
122 | return CMD_WARNING_CONFIG_FAILED; | |
123 | } | |
41675b4c | 124 | |
d62a17ae | 125 | return CMD_SUCCESS; |
41675b4c RW |
126 | } |
127 | ||
128 | DEFUN (mpls_transit_lsp, | |
129 | mpls_transit_lsp_cmd, | |
e52702f2 | 130 | "mpls lsp (16-1048575) <A.B.C.D|X:X::X:X> <(16-1048575)|explicit-null|implicit-null>", |
41675b4c RW |
131 | MPLS_STR |
132 | "Establish label switched path\n" | |
133 | "Incoming MPLS label\n" | |
134 | "IPv4 gateway address\n" | |
135 | "IPv6 gateway address\n" | |
136 | "Outgoing MPLS label\n" | |
e64f3c32 | 137 | "Use Explicit-Null label\n" |
41675b4c RW |
138 | "Use Implicit-Null label\n") |
139 | { | |
d62a17ae | 140 | return zebra_mpls_transit_lsp(vty, 1, argv[2]->arg, argv[3]->arg, |
141 | argv[4]->arg, NULL); | |
41675b4c RW |
142 | } |
143 | ||
144 | DEFUN (no_mpls_transit_lsp, | |
145 | no_mpls_transit_lsp_cmd, | |
e52702f2 | 146 | "no mpls lsp (16-1048575) <A.B.C.D|X:X::X:X>", |
41675b4c RW |
147 | NO_STR |
148 | MPLS_STR | |
149 | "Establish label switched path\n" | |
150 | "Incoming MPLS label\n" | |
151 | "IPv4 gateway address\n" | |
152 | "IPv6 gateway address\n") | |
153 | { | |
d62a17ae | 154 | return zebra_mpls_transit_lsp(vty, 0, argv[3]->arg, argv[4]->arg, NULL, |
155 | NULL); | |
41675b4c RW |
156 | } |
157 | ||
d62a17ae | 158 | ALIAS(no_mpls_transit_lsp, no_mpls_transit_lsp_out_label_cmd, |
159 | "no mpls lsp (16-1048575) <A.B.C.D|X:X::X:X> <(16-1048575)|explicit-null|implicit-null>", | |
160 | NO_STR MPLS_STR | |
161 | "Establish label switched path\n" | |
162 | "Incoming MPLS label\n" | |
163 | "IPv4 gateway address\n" | |
164 | "IPv6 gateway address\n" | |
165 | "Outgoing MPLS label\n" | |
166 | "Use Explicit-Null label\n" | |
167 | "Use Implicit-Null label\n") | |
168 | ||
41675b4c RW |
169 | DEFUN (no_mpls_transit_lsp_all, |
170 | no_mpls_transit_lsp_all_cmd, | |
e52702f2 | 171 | "no mpls lsp (16-1048575)", |
41675b4c RW |
172 | NO_STR |
173 | MPLS_STR | |
174 | "Establish label switched path\n" | |
175 | "Incoming MPLS label\n") | |
176 | { | |
d62a17ae | 177 | return zebra_mpls_transit_lsp(vty, 0, argv[3]->arg, NULL, NULL, NULL); |
41675b4c RW |
178 | } |
179 | ||
d62a17ae | 180 | static int zebra_mpls_bind(struct vty *vty, int add_cmd, const char *prefix, |
181 | const char *label_str) | |
f31e084c | 182 | { |
d62a17ae | 183 | struct zebra_vrf *zvrf; |
184 | struct prefix p; | |
d7c0a89a | 185 | uint32_t label; |
d62a17ae | 186 | int ret; |
187 | ||
9a7d1e74 | 188 | zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 189 | if (!zvrf) { |
190 | vty_out(vty, "%% Default VRF does not exist\n"); | |
191 | return CMD_WARNING_CONFIG_FAILED; | |
192 | } | |
193 | ||
6006b807 | 194 | memset(&p, 0, sizeof(p)); |
d62a17ae | 195 | ret = str2prefix(prefix, &p); |
196 | if (ret <= 0) { | |
197 | vty_out(vty, "%% Malformed address\n"); | |
198 | return CMD_WARNING_CONFIG_FAILED; | |
199 | } | |
200 | ||
201 | if (add_cmd) { | |
202 | if (!label_str) { | |
203 | vty_out(vty, "%% No label binding specified\n"); | |
204 | return CMD_WARNING_CONFIG_FAILED; | |
205 | } | |
206 | ||
207 | if (!strcmp(label_str, "implicit-null")) | |
70e98a7f | 208 | label = MPLS_LABEL_IMPLICIT_NULL; |
d62a17ae | 209 | else if (!strcmp(label_str, "explicit-null")) { |
210 | if (p.family == AF_INET) | |
70e98a7f | 211 | label = MPLS_LABEL_IPV4_EXPLICIT_NULL; |
d62a17ae | 212 | else |
70e98a7f | 213 | label = MPLS_LABEL_IPV6_EXPLICIT_NULL; |
d62a17ae | 214 | } else { |
215 | label = atoi(label_str); | |
216 | if (!IS_MPLS_UNRESERVED_LABEL(label)) { | |
217 | vty_out(vty, "%% Invalid label\n"); | |
218 | return CMD_WARNING_CONFIG_FAILED; | |
219 | } | |
220 | if (zebra_mpls_label_already_bound(zvrf, label)) { | |
221 | vty_out(vty, | |
222 | "%% Label already bound to a FEC\n"); | |
223 | return CMD_WARNING_CONFIG_FAILED; | |
224 | } | |
225 | } | |
226 | ||
227 | ret = zebra_mpls_static_fec_add(zvrf, &p, label); | |
228 | } else | |
229 | ret = zebra_mpls_static_fec_del(zvrf, &p); | |
230 | ||
231 | if (ret) { | |
232 | vty_out(vty, "%% FEC to label binding cannot be %s\n", | |
233 | add_cmd ? "added" : "deleted"); | |
234 | return CMD_WARNING_CONFIG_FAILED; | |
235 | } | |
236 | ||
237 | return CMD_SUCCESS; | |
f31e084c DS |
238 | } |
239 | ||
240 | DEFUN (mpls_label_bind, | |
241 | mpls_label_bind_cmd, | |
bf995813 | 242 | "mpls label bind <A.B.C.D/M|X:X::X:X/M> <(16-1048575)|implicit-null|explicit-null>", |
f31e084c DS |
243 | MPLS_STR |
244 | "Label configuration\n" | |
245 | "Establish FEC to label binding\n" | |
246 | "IPv4 prefix\n" | |
247 | "IPv6 prefix\n" | |
248 | "MPLS Label to bind\n" | |
bf995813 DS |
249 | "Use Implicit-Null Label\n" |
250 | "Use Explicit-Null Label\n") | |
f31e084c | 251 | { |
d62a17ae | 252 | return zebra_mpls_bind(vty, 1, argv[3]->arg, argv[4]->arg); |
f31e084c DS |
253 | } |
254 | ||
255 | DEFUN (no_mpls_label_bind, | |
256 | no_mpls_label_bind_cmd, | |
257 | "no mpls label bind <A.B.C.D/M|X:X::X:X/M> [<(16-1048575)|implicit-null>]", | |
258 | NO_STR | |
259 | MPLS_STR | |
260 | "Label configuration\n" | |
261 | "Establish FEC to label binding\n" | |
262 | "IPv4 prefix\n" | |
263 | "IPv6 prefix\n" | |
264 | "MPLS Label to bind\n" | |
265 | "Use Implicit-Null Label\n") | |
f31e084c | 266 | { |
d62a17ae | 267 | return zebra_mpls_bind(vty, 0, argv[4]->arg, NULL); |
f31e084c DS |
268 | } |
269 | ||
41675b4c | 270 | /* MPLS LSP configuration write function. */ |
d62a17ae | 271 | static int zebra_mpls_config(struct vty *vty) |
41675b4c | 272 | { |
d62a17ae | 273 | int write = 0; |
274 | struct zebra_vrf *zvrf; | |
41675b4c | 275 | |
9a7d1e74 | 276 | zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 277 | if (!zvrf) |
278 | return 0; | |
41675b4c | 279 | |
d62a17ae | 280 | write += zebra_mpls_write_lsp_config(vty, zvrf); |
281 | write += zebra_mpls_write_fec_config(vty, zvrf); | |
282 | write += zebra_mpls_write_label_block_config(vty, zvrf); | |
283 | return write; | |
41675b4c RW |
284 | } |
285 | ||
f31e084c DS |
286 | DEFUN (show_mpls_fec, |
287 | show_mpls_fec_cmd, | |
288 | "show mpls fec [<A.B.C.D/M|X:X::X:X/M>]", | |
289 | SHOW_STR | |
290 | MPLS_STR | |
291 | "MPLS FEC table\n" | |
292 | "FEC to display information about\n" | |
293 | "FEC to display information about\n") | |
294 | { | |
d62a17ae | 295 | struct zebra_vrf *zvrf; |
296 | struct prefix p; | |
297 | int ret; | |
298 | ||
9a7d1e74 | 299 | zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 300 | if (!zvrf) |
301 | return 0; | |
302 | ||
303 | if (argc == 3) | |
304 | zebra_mpls_print_fec_table(vty, zvrf); | |
305 | else { | |
306 | memset(&p, 0, sizeof(struct prefix)); | |
307 | ret = str2prefix(argv[3]->arg, &p); | |
308 | if (ret <= 0) { | |
309 | vty_out(vty, "%% Malformed address\n"); | |
310 | return CMD_WARNING; | |
311 | } | |
312 | zebra_mpls_print_fec(vty, zvrf, &p); | |
313 | } | |
314 | ||
315 | return CMD_SUCCESS; | |
f31e084c DS |
316 | } |
317 | ||
41675b4c RW |
318 | DEFUN (show_mpls_table, |
319 | show_mpls_table_cmd, | |
e52702f2 | 320 | "show mpls table [json]", |
41675b4c RW |
321 | SHOW_STR |
322 | MPLS_STR | |
323 | "MPLS table\n" | |
9973d184 | 324 | JSON_STR) |
41675b4c | 325 | { |
d62a17ae | 326 | struct zebra_vrf *zvrf; |
088f1098 | 327 | bool uj = use_json(argc, argv); |
41675b4c | 328 | |
9a7d1e74 | 329 | zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 330 | zebra_mpls_print_lsp_table(vty, zvrf, uj); |
331 | return CMD_SUCCESS; | |
41675b4c RW |
332 | } |
333 | ||
334 | DEFUN (show_mpls_table_lsp, | |
335 | show_mpls_table_lsp_cmd, | |
e52702f2 | 336 | "show mpls table (16-1048575) [json]", |
41675b4c RW |
337 | SHOW_STR |
338 | MPLS_STR | |
339 | "MPLS table\n" | |
340 | "LSP to display information about\n" | |
9973d184 | 341 | JSON_STR) |
41675b4c | 342 | { |
d7c0a89a | 343 | uint32_t label; |
d62a17ae | 344 | struct zebra_vrf *zvrf; |
088f1098 | 345 | bool uj = use_json(argc, argv); |
d62a17ae | 346 | |
9a7d1e74 | 347 | zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 348 | label = atoi(argv[3]->arg); |
349 | zebra_mpls_print_lsp(vty, zvrf, label, uj); | |
350 | return CMD_SUCCESS; | |
41675b4c RW |
351 | } |
352 | ||
fe6c7157 RW |
353 | DEFUN (show_mpls_status, |
354 | show_mpls_status_cmd, | |
355 | "show mpls status", | |
356 | SHOW_STR | |
357 | "MPLS information\n" | |
358 | "MPLS status\n") | |
359 | { | |
d62a17ae | 360 | vty_out(vty, "MPLS support enabled: %s\n", |
361 | (mpls_enabled) ? "yes" | |
362 | : "no (mpls kernel extensions not detected)"); | |
363 | return CMD_SUCCESS; | |
fe6c7157 RW |
364 | } |
365 | ||
d62a17ae | 366 | static int zebra_mpls_global_block(struct vty *vty, int add_cmd, |
367 | const char *start_label_str, | |
368 | const char *end_label_str) | |
1b6d5c7e | 369 | { |
d62a17ae | 370 | int ret; |
d7c0a89a QY |
371 | uint32_t start_label; |
372 | uint32_t end_label; | |
d62a17ae | 373 | struct zebra_vrf *zvrf; |
374 | ||
375 | zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT); | |
376 | if (!zvrf) { | |
377 | vty_out(vty, "%% Default VRF does not exist\n"); | |
378 | return CMD_WARNING_CONFIG_FAILED; | |
379 | } | |
380 | ||
381 | if (add_cmd) { | |
382 | if (!start_label_str || !end_label_str) { | |
383 | vty_out(vty, "%% Labels not specified\n"); | |
384 | return CMD_WARNING_CONFIG_FAILED; | |
385 | } | |
386 | ||
387 | start_label = atoi(start_label_str); | |
388 | end_label = atoi(end_label_str); | |
389 | if (!IS_MPLS_UNRESERVED_LABEL(start_label) | |
390 | || !IS_MPLS_UNRESERVED_LABEL(end_label)) { | |
391 | vty_out(vty, "%% Invalid label\n"); | |
392 | return CMD_WARNING_CONFIG_FAILED; | |
393 | } | |
394 | if (end_label < start_label) { | |
395 | vty_out(vty, "%% End label is less than Start label\n"); | |
396 | return CMD_WARNING_CONFIG_FAILED; | |
397 | } | |
398 | ||
399 | ret = zebra_mpls_label_block_add(zvrf, start_label, end_label); | |
400 | } else | |
401 | ret = zebra_mpls_label_block_del(zvrf); | |
402 | ||
403 | if (ret) { | |
404 | vty_out(vty, "%% Global label block could not be %s\n", | |
405 | add_cmd ? "added" : "deleted"); | |
406 | return CMD_WARNING_CONFIG_FAILED; | |
407 | } | |
408 | ||
409 | return CMD_SUCCESS; | |
1b6d5c7e VV |
410 | } |
411 | ||
412 | DEFUN (mpls_label_global_block, | |
413 | mpls_label_global_block_cmd, | |
414 | "mpls label global-block (16-1048575) (16-1048575)", | |
415 | MPLS_STR | |
416 | "Label configuration\n" | |
417 | "Configure global label block\n" | |
418 | "Start label\n" | |
419 | "End label\n") | |
420 | { | |
d62a17ae | 421 | return zebra_mpls_global_block(vty, 1, argv[3]->arg, argv[4]->arg); |
1b6d5c7e VV |
422 | } |
423 | ||
424 | DEFUN (no_mpls_label_global_block, | |
425 | no_mpls_label_global_block_cmd, | |
426 | "no mpls label global-block [(16-1048575) (16-1048575)]", | |
427 | NO_STR | |
428 | MPLS_STR | |
429 | "Label configuration\n" | |
430 | "Configure global label block\n" | |
431 | "Start label\n" | |
432 | "End label\n") | |
433 | { | |
d62a17ae | 434 | return zebra_mpls_global_block(vty, 0, NULL, NULL); |
1b6d5c7e VV |
435 | } |
436 | ||
612c2c15 | 437 | static int zebra_mpls_config(struct vty *vty); |
41675b4c | 438 | /* MPLS node for MPLS LSP. */ |
62b346ee | 439 | static struct cmd_node mpls_node = { |
f4b8291f | 440 | .name = "mpls", |
62b346ee DL |
441 | .node = MPLS_NODE, |
442 | .prompt = "", | |
612c2c15 | 443 | .config_write = zebra_mpls_config, |
62b346ee | 444 | }; |
41675b4c RW |
445 | |
446 | /* MPLS VTY. */ | |
d62a17ae | 447 | void zebra_mpls_vty_init(void) |
41675b4c | 448 | { |
d62a17ae | 449 | install_element(VIEW_NODE, &show_mpls_status_cmd); |
450 | ||
612c2c15 | 451 | install_node(&mpls_node); |
d62a17ae | 452 | |
d62a17ae | 453 | install_element(CONFIG_NODE, &mpls_transit_lsp_cmd); |
454 | install_element(CONFIG_NODE, &no_mpls_transit_lsp_cmd); | |
455 | install_element(CONFIG_NODE, &no_mpls_transit_lsp_out_label_cmd); | |
456 | install_element(CONFIG_NODE, &no_mpls_transit_lsp_all_cmd); | |
d97c792e | 457 | |
d62a17ae | 458 | install_element(CONFIG_NODE, &mpls_label_bind_cmd); |
459 | install_element(CONFIG_NODE, &no_mpls_label_bind_cmd); | |
460 | ||
461 | install_element(CONFIG_NODE, &mpls_label_global_block_cmd); | |
462 | install_element(CONFIG_NODE, &no_mpls_label_global_block_cmd); | |
463 | ||
464 | install_element(VIEW_NODE, &show_mpls_table_cmd); | |
465 | install_element(VIEW_NODE, &show_mpls_table_lsp_cmd); | |
466 | install_element(VIEW_NODE, &show_mpls_fec_cmd); | |
41675b4c | 467 | } |