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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
6c0a7c09 HS |
2 | /* |
3 | * Zebra SRv6 VTY functions | |
4 | * Copyright (C) 2020 Hiroki Shirokura, LINE Corporation | |
6c0a7c09 HS |
5 | */ |
6 | ||
7 | #include <zebra.h> | |
8 | ||
9 | #include "memory.h" | |
10 | #include "if.h" | |
11 | #include "prefix.h" | |
12 | #include "command.h" | |
13 | #include "table.h" | |
14 | #include "rib.h" | |
15 | #include "nexthop.h" | |
16 | #include "vrf.h" | |
17 | #include "srv6.h" | |
18 | #include "lib/json.h" | |
19 | ||
20 | #include "zebra/zserv.h" | |
00978977 | 21 | #include "zebra/zebra_router.h" |
6c0a7c09 | 22 | #include "zebra/zebra_vrf.h" |
00978977 | 23 | #include "zebra/zebra_srv6.h" |
6c0a7c09 HS |
24 | #include "zebra/zebra_srv6_vty.h" |
25 | #include "zebra/zebra_rnh.h" | |
26 | #include "zebra/redistribute.h" | |
27 | #include "zebra/zebra_routemap.h" | |
28 | #include "zebra/zebra_dplane.h" | |
29 | ||
daedb8b3 | 30 | #include "zebra/zebra_srv6_vty_clippy.c" |
daedb8b3 | 31 | |
6c0a7c09 HS |
32 | static int zebra_sr_config(struct vty *vty); |
33 | ||
34 | static struct cmd_node sr_node = { | |
35 | .name = "sr", | |
36 | .node = SEGMENT_ROUTING_NODE, | |
37 | .parent_node = CONFIG_NODE, | |
38 | .prompt = "%s(config-sr)# ", | |
39 | .config_write = zebra_sr_config, | |
40 | }; | |
41 | ||
42 | static struct cmd_node srv6_node = { | |
43 | .name = "srv6", | |
44 | .node = SRV6_NODE, | |
45 | .parent_node = SEGMENT_ROUTING_NODE, | |
46 | .prompt = "%s(config-srv6)# ", | |
47 | ||
48 | }; | |
49 | ||
50 | static struct cmd_node srv6_locs_node = { | |
51 | .name = "srv6-locators", | |
52 | .node = SRV6_LOCS_NODE, | |
53 | .parent_node = SRV6_NODE, | |
54 | .prompt = "%s(config-srv6-locators)# ", | |
55 | }; | |
56 | ||
57 | static struct cmd_node srv6_loc_node = { | |
58 | .name = "srv6-locator", | |
59 | .node = SRV6_LOC_NODE, | |
60 | .parent_node = SRV6_LOCS_NODE, | |
61 | .prompt = "%s(config-srv6-locator)# " | |
62 | }; | |
63 | ||
00978977 HS |
64 | DEFUN (show_srv6_locator, |
65 | show_srv6_locator_cmd, | |
66 | "show segment-routing srv6 locator [json]", | |
67 | SHOW_STR | |
68 | "Segment Routing\n" | |
69 | "Segment Routing SRv6\n" | |
70 | "Locator Information\n" | |
71 | JSON_STR) | |
72 | { | |
73 | const bool uj = use_json(argc, argv); | |
74 | struct zebra_srv6 *srv6 = zebra_srv6_get_default(); | |
75 | struct srv6_locator *locator; | |
76 | struct listnode *node; | |
77 | char str[256]; | |
78 | int id; | |
79 | json_object *json = NULL; | |
80 | json_object *json_locators = NULL; | |
81 | json_object *json_locator = NULL; | |
82 | ||
83 | if (uj) { | |
84 | json = json_object_new_object(); | |
85 | json_locators = json_object_new_array(); | |
86 | json_object_object_add(json, "locators", json_locators); | |
87 | ||
88 | for (ALL_LIST_ELEMENTS_RO(srv6->locators, node, locator)) { | |
89 | json_locator = srv6_locator_json(locator); | |
90 | if (!json_locator) | |
91 | continue; | |
92 | json_object_array_add(json_locators, json_locator); | |
93 | ||
94 | } | |
95 | ||
962af8a8 | 96 | vty_json(vty, json); |
00978977 HS |
97 | } else { |
98 | vty_out(vty, "Locator:\n"); | |
99 | vty_out(vty, "Name ID Prefix Status\n"); | |
100 | vty_out(vty, "-------------------- ------- ------------------------ -------\n"); | |
101 | ||
102 | id = 1; | |
103 | for (ALL_LIST_ELEMENTS_RO(srv6->locators, node, locator)) { | |
104 | prefix2str(&locator->prefix, str, sizeof(str)); | |
105 | vty_out(vty, "%-20s %7d %-24s %s\n", | |
106 | locator->name, id, str, | |
107 | locator->status_up ? "Up" : "Down"); | |
108 | ++id; | |
109 | } | |
110 | vty_out(vty, "\n"); | |
111 | } | |
112 | ||
113 | return CMD_SUCCESS; | |
114 | } | |
115 | ||
116 | DEFUN (show_srv6_locator_detail, | |
117 | show_srv6_locator_detail_cmd, | |
118 | "show segment-routing srv6 locator NAME detail [json]", | |
119 | SHOW_STR | |
120 | "Segment Routing\n" | |
121 | "Segment Routing SRv6\n" | |
122 | "Locator Information\n" | |
123 | "Locator Name\n" | |
124 | "Detailed information\n" | |
125 | JSON_STR) | |
126 | { | |
127 | const bool uj = use_json(argc, argv); | |
128 | struct zebra_srv6 *srv6 = zebra_srv6_get_default(); | |
129 | struct srv6_locator *locator; | |
130 | struct listnode *node; | |
131 | char str[256]; | |
132 | const char *locator_name = argv[4]->arg; | |
559f4b2f | 133 | json_object *json_locator = NULL; |
00978977 HS |
134 | |
135 | if (uj) { | |
559f4b2f YS |
136 | locator = zebra_srv6_locator_lookup(locator_name); |
137 | if (!locator) | |
138 | return CMD_WARNING; | |
139 | ||
140 | json_locator = srv6_locator_detailed_json(locator); | |
141 | vty_json(vty, json_locator); | |
142 | return CMD_SUCCESS; | |
4df9d859 | 143 | } |
00978977 | 144 | |
4df9d859 HS |
145 | for (ALL_LIST_ELEMENTS_RO(srv6->locators, node, locator)) { |
146 | struct listnode *node; | |
147 | struct srv6_locator_chunk *chunk; | |
148 | ||
149 | if (strcmp(locator->name, locator_name) != 0) | |
150 | continue; | |
151 | ||
152 | prefix2str(&locator->prefix, str, sizeof(str)); | |
153 | vty_out(vty, "Name: %s\n", locator->name); | |
154 | vty_out(vty, "Prefix: %s\n", str); | |
d9d31799 CS |
155 | vty_out(vty, "Block-Bit-Len: %u\n", locator->block_bits_length); |
156 | vty_out(vty, "Node-Bit-Len: %u\n", locator->node_bits_length); | |
4df9d859 HS |
157 | vty_out(vty, "Function-Bit-Len: %u\n", |
158 | locator->function_bits_length); | |
d9d31799 CS |
159 | vty_out(vty, "Argument-Bit-Len: %u\n", |
160 | locator->argument_bits_length); | |
4df9d859 | 161 | |
a3ff3dff CS |
162 | if (CHECK_FLAG(locator->flags, SRV6_LOCATOR_USID)) |
163 | vty_out(vty, "Behavior: uSID\n"); | |
164 | ||
4df9d859 HS |
165 | vty_out(vty, "Chunks:\n"); |
166 | for (ALL_LIST_ELEMENTS_RO((struct list *)locator->chunks, node, | |
167 | chunk)) { | |
168 | prefix2str(&chunk->prefix, str, sizeof(str)); | |
169 | vty_out(vty, "- prefix: %s, owner: %s\n", str, | |
170 | zebra_route_string(chunk->proto)); | |
00978977 | 171 | } |
00978977 HS |
172 | } |
173 | ||
4df9d859 | 174 | |
00978977 HS |
175 | return CMD_SUCCESS; |
176 | } | |
177 | ||
6c0a7c09 HS |
178 | DEFUN_NOSH (segment_routing, |
179 | segment_routing_cmd, | |
180 | "segment-routing", | |
181 | "Segment Routing\n") | |
182 | { | |
183 | vty->node = SEGMENT_ROUTING_NODE; | |
184 | return CMD_SUCCESS; | |
185 | } | |
186 | ||
187 | DEFUN_NOSH (srv6, | |
188 | srv6_cmd, | |
189 | "srv6", | |
190 | "Segment Routing SRv6\n") | |
191 | { | |
192 | vty->node = SRV6_NODE; | |
193 | return CMD_SUCCESS; | |
194 | } | |
195 | ||
0a735cd5 HS |
196 | DEFUN (no_srv6, |
197 | no_srv6_cmd, | |
198 | "no srv6", | |
199 | NO_STR | |
200 | "Segment Routing SRv6\n") | |
201 | { | |
202 | struct zebra_srv6 *srv6 = zebra_srv6_get_default(); | |
203 | struct srv6_locator *locator; | |
204 | struct listnode *node, *nnode; | |
205 | ||
206 | for (ALL_LIST_ELEMENTS(srv6->locators, node, nnode, locator)) | |
207 | zebra_srv6_locator_delete(locator); | |
208 | return CMD_SUCCESS; | |
209 | } | |
210 | ||
6c0a7c09 HS |
211 | DEFUN_NOSH (srv6_locators, |
212 | srv6_locators_cmd, | |
213 | "locators", | |
214 | "Segment Routing SRv6 locators\n") | |
215 | { | |
216 | vty->node = SRV6_LOCS_NODE; | |
217 | return CMD_SUCCESS; | |
218 | } | |
219 | ||
220 | DEFUN_NOSH (srv6_locator, | |
221 | srv6_locator_cmd, | |
222 | "locator WORD", | |
223 | "Segment Routing SRv6 locator\n" | |
224 | "Specify locator-name\n") | |
225 | { | |
00978977 HS |
226 | struct srv6_locator *locator = NULL; |
227 | ||
228 | locator = zebra_srv6_locator_lookup(argv[1]->arg); | |
229 | if (locator) { | |
230 | VTY_PUSH_CONTEXT(SRV6_LOC_NODE, locator); | |
231 | locator->status_up = true; | |
232 | return CMD_SUCCESS; | |
233 | } | |
234 | ||
235 | locator = srv6_locator_alloc(argv[1]->arg); | |
236 | if (!locator) { | |
237 | vty_out(vty, "%% Alloc failed\n"); | |
238 | return CMD_WARNING_CONFIG_FAILED; | |
239 | } | |
240 | locator->status_up = true; | |
241 | ||
242 | VTY_PUSH_CONTEXT(SRV6_LOC_NODE, locator); | |
6c0a7c09 HS |
243 | vty->node = SRV6_LOC_NODE; |
244 | return CMD_SUCCESS; | |
245 | } | |
246 | ||
0a735cd5 HS |
247 | DEFUN (no_srv6_locator, |
248 | no_srv6_locator_cmd, | |
249 | "no locator WORD", | |
250 | NO_STR | |
251 | "Segment Routing SRv6 locator\n" | |
252 | "Specify locator-name\n") | |
253 | { | |
254 | struct srv6_locator *locator = zebra_srv6_locator_lookup(argv[2]->arg); | |
255 | if (!locator) { | |
256 | vty_out(vty, "%% Can't find SRv6 locator\n"); | |
257 | return CMD_WARNING_CONFIG_FAILED; | |
258 | } | |
259 | ||
260 | zebra_srv6_locator_delete(locator); | |
261 | return CMD_SUCCESS; | |
262 | } | |
263 | ||
daedb8b3 | 264 | DEFPY (locator_prefix, |
00978977 | 265 | locator_prefix_cmd, |
3afb06d3 RS |
266 | "prefix X:X::X:X/M$prefix [block-len (16-64)$block_bit_len] \ |
267 | [node-len (16-64)$node_bit_len] [func-bits (0-64)$func_bit_len]", | |
00978977 HS |
268 | "Configure SRv6 locator prefix\n" |
269 | "Specify SRv6 locator prefix\n" | |
5e04508c CS |
270 | "Configure SRv6 locator block length in bits\n" |
271 | "Specify SRv6 locator block length in bits\n" | |
272 | "Configure SRv6 locator node length in bits\n" | |
3afb06d3 RS |
273 | "Specify SRv6 locator node length in bits\n" |
274 | "Configure SRv6 locator function length in bits\n" | |
275 | "Specify SRv6 locator function length in bits\n") | |
00978977 HS |
276 | { |
277 | VTY_DECLVAR_CONTEXT(srv6_locator, locator); | |
00978977 HS |
278 | struct srv6_locator_chunk *chunk = NULL; |
279 | struct listnode *node = NULL; | |
00978977 | 280 | |
daedb8b3 | 281 | locator->prefix = *prefix; |
85521aaa | 282 | func_bit_len = func_bit_len ?: ZEBRA_SRV6_FUNCTION_LENGTH; |
ac6a9479 | 283 | |
5e04508c CS |
284 | /* Resolve optional arguments */ |
285 | if (block_bit_len == 0 && node_bit_len == 0) { | |
286 | block_bit_len = | |
287 | prefix->prefixlen - ZEBRA_SRV6_LOCATOR_NODE_LENGTH; | |
288 | node_bit_len = ZEBRA_SRV6_LOCATOR_NODE_LENGTH; | |
289 | } else if (block_bit_len == 0) { | |
290 | block_bit_len = prefix->prefixlen - node_bit_len; | |
291 | } else if (node_bit_len == 0) { | |
292 | node_bit_len = prefix->prefixlen - block_bit_len; | |
293 | } else { | |
294 | if (block_bit_len + node_bit_len != prefix->prefixlen) { | |
295 | vty_out(vty, | |
296 | "%% block-len + node-len must be equal to the selected prefix length %d\n", | |
297 | prefix->prefixlen); | |
298 | return CMD_WARNING_CONFIG_FAILED; | |
299 | } | |
300 | } | |
301 | ||
34e3711f CS |
302 | if (prefix->prefixlen + func_bit_len + 0 > 128) { |
303 | vty_out(vty, | |
304 | "%% prefix-len + function-len + arg-len (%ld) cannot be greater than 128\n", | |
305 | prefix->prefixlen + func_bit_len + 0); | |
306 | return CMD_WARNING_CONFIG_FAILED; | |
307 | } | |
308 | ||
537b8b13 CS |
309 | /* |
310 | * Currently, the SID transposition algorithm implemented in bgpd | |
311 | * handles incorrectly the SRv6 locators with function length greater | |
312 | * than 20 bits. To prevent issues, we currently limit the function | |
313 | * length to 20 bits. | |
314 | * This limit will be removed when the bgpd SID transposition is fixed. | |
315 | */ | |
316 | if (func_bit_len > 20) { | |
317 | vty_out(vty, | |
318 | "%% currently func_bit_len > 20 is not supported\n"); | |
319 | return CMD_WARNING_CONFIG_FAILED; | |
320 | } | |
321 | ||
5e04508c CS |
322 | locator->block_bits_length = block_bit_len; |
323 | locator->node_bits_length = node_bit_len; | |
daedb8b3 | 324 | locator->function_bits_length = func_bit_len; |
ac6a9479 | 325 | locator->argument_bits_length = 0; |
00978977 HS |
326 | |
327 | if (list_isempty(locator->chunks)) { | |
328 | chunk = srv6_locator_chunk_alloc(); | |
daedb8b3 | 329 | chunk->prefix = *prefix; |
00978977 HS |
330 | chunk->proto = 0; |
331 | listnode_add(locator->chunks, chunk); | |
332 | } else { | |
333 | for (ALL_LIST_ELEMENTS_RO(locator->chunks, node, chunk)) { | |
334 | uint8_t zero[16] = {0}; | |
4df9d859 | 335 | |
00978977 HS |
336 | if (memcmp(&chunk->prefix.prefix, zero, 16) == 0) { |
337 | struct zserv *client; | |
338 | struct listnode *client_node; | |
4df9d859 | 339 | |
daedb8b3 | 340 | chunk->prefix = *prefix; |
4df9d859 HS |
341 | for (ALL_LIST_ELEMENTS_RO(zrouter.client_list, |
342 | client_node, | |
343 | client)) { | |
344 | struct srv6_locator *tmp; | |
345 | ||
00978977 HS |
346 | if (client->proto != chunk->proto) |
347 | continue; | |
f29aed74 | 348 | |
00978977 | 349 | srv6_manager_get_locator_chunk_call( |
4df9d859 HS |
350 | &tmp, client, |
351 | locator->name, | |
352 | VRF_DEFAULT); | |
00978977 HS |
353 | } |
354 | } | |
355 | } | |
356 | } | |
357 | ||
358 | zebra_srv6_locator_add(locator); | |
359 | return CMD_SUCCESS; | |
360 | } | |
361 | ||
3a7e1f65 CS |
362 | DEFPY (locator_behavior, |
363 | locator_behavior_cmd, | |
364 | "[no] behavior usid", | |
365 | NO_STR | |
366 | "Configure SRv6 behavior\n" | |
367 | "Specify SRv6 behavior uSID\n") | |
368 | { | |
369 | VTY_DECLVAR_CONTEXT(srv6_locator, locator); | |
370 | ||
371 | if (no && !CHECK_FLAG(locator->flags, SRV6_LOCATOR_USID)) | |
372 | /* SRv6 locator uSID flag already unset, nothing to do */ | |
373 | return CMD_SUCCESS; | |
374 | ||
375 | if (!no && CHECK_FLAG(locator->flags, SRV6_LOCATOR_USID)) | |
376 | /* SRv6 locator uSID flag already set, nothing to do */ | |
377 | return CMD_SUCCESS; | |
378 | ||
379 | /* Remove old locator from zclients */ | |
380 | zebra_notify_srv6_locator_delete(locator); | |
381 | ||
382 | /* Set/Unset the SRV6_LOCATOR_USID */ | |
383 | if (no) | |
384 | UNSET_FLAG(locator->flags, SRV6_LOCATOR_USID); | |
385 | else | |
386 | SET_FLAG(locator->flags, SRV6_LOCATOR_USID); | |
387 | ||
388 | /* Notify the new locator to zclients */ | |
389 | zebra_notify_srv6_locator_add(locator); | |
390 | ||
391 | return CMD_SUCCESS; | |
392 | } | |
393 | ||
6c0a7c09 HS |
394 | static int zebra_sr_config(struct vty *vty) |
395 | { | |
00978977 HS |
396 | struct zebra_srv6 *srv6 = zebra_srv6_get_default(); |
397 | struct listnode *node; | |
398 | struct srv6_locator *locator; | |
399 | char str[256]; | |
400 | ||
401 | vty_out(vty, "!\n"); | |
402 | if (zebra_srv6_is_enable()) { | |
403 | vty_out(vty, "segment-routing\n"); | |
404 | vty_out(vty, " srv6\n"); | |
405 | vty_out(vty, " locators\n"); | |
406 | for (ALL_LIST_ELEMENTS_RO(srv6->locators, node, locator)) { | |
407 | inet_ntop(AF_INET6, &locator->prefix.prefix, | |
408 | str, sizeof(str)); | |
409 | vty_out(vty, " locator %s\n", locator->name); | |
fbd01eaa | 410 | vty_out(vty, " prefix %s/%u", str, |
00978977 | 411 | locator->prefix.prefixlen); |
780c13eb CS |
412 | if (locator->block_bits_length) |
413 | vty_out(vty, " block-len %u", | |
414 | locator->block_bits_length); | |
415 | if (locator->node_bits_length) | |
416 | vty_out(vty, " node-len %u", | |
417 | locator->node_bits_length); | |
fbd01eaa NM |
418 | if (locator->function_bits_length) |
419 | vty_out(vty, " func-bits %u", | |
420 | locator->function_bits_length); | |
780c13eb CS |
421 | if (locator->argument_bits_length) |
422 | vty_out(vty, " arg-len %u", | |
423 | locator->argument_bits_length); | |
fbd01eaa | 424 | vty_out(vty, "\n"); |
dd8b193e CS |
425 | if (CHECK_FLAG(locator->flags, SRV6_LOCATOR_USID)) |
426 | vty_out(vty, " behavior usid\n"); | |
07679ad9 | 427 | vty_out(vty, " exit\n"); |
00978977 HS |
428 | vty_out(vty, " !\n"); |
429 | } | |
07679ad9 | 430 | vty_out(vty, " exit\n"); |
00978977 | 431 | vty_out(vty, " !\n"); |
07679ad9 | 432 | vty_out(vty, " exit\n"); |
00978977 | 433 | vty_out(vty, " !\n"); |
07679ad9 | 434 | vty_out(vty, "exit\n"); |
00978977 HS |
435 | vty_out(vty, "!\n"); |
436 | } | |
6c0a7c09 HS |
437 | return 0; |
438 | } | |
439 | ||
440 | void zebra_srv6_vty_init(void) | |
441 | { | |
442 | /* Install nodes and its default commands */ | |
443 | install_node(&sr_node); | |
444 | install_node(&srv6_node); | |
445 | install_node(&srv6_locs_node); | |
446 | install_node(&srv6_loc_node); | |
447 | install_default(SEGMENT_ROUTING_NODE); | |
448 | install_default(SRV6_NODE); | |
449 | install_default(SRV6_LOCS_NODE); | |
450 | install_default(SRV6_LOC_NODE); | |
451 | ||
452 | /* Command for change node */ | |
453 | install_element(CONFIG_NODE, &segment_routing_cmd); | |
454 | install_element(SEGMENT_ROUTING_NODE, &srv6_cmd); | |
0a735cd5 | 455 | install_element(SEGMENT_ROUTING_NODE, &no_srv6_cmd); |
6c0a7c09 HS |
456 | install_element(SRV6_NODE, &srv6_locators_cmd); |
457 | install_element(SRV6_LOCS_NODE, &srv6_locator_cmd); | |
0a735cd5 | 458 | install_element(SRV6_LOCS_NODE, &no_srv6_locator_cmd); |
00978977 HS |
459 | |
460 | /* Command for configuration */ | |
461 | install_element(SRV6_LOC_NODE, &locator_prefix_cmd); | |
3a7e1f65 | 462 | install_element(SRV6_LOC_NODE, &locator_behavior_cmd); |
00978977 HS |
463 | |
464 | /* Command for operation */ | |
465 | install_element(VIEW_NODE, &show_srv6_locator_cmd); | |
466 | install_element(VIEW_NODE, &show_srv6_locator_detail_cmd); | |
6c0a7c09 | 467 | } |