1 /*
2 * iplink_vxlan.c VXLAN device support
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Stephen Hemminger <shemminger@vyatta.com
10 */
11
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <net/if.h>
16 #include <linux/ip.h>
17 #include <linux/if_link.h>
18 #include <arpa/inet.h>
19
20 #include "rt_names.h"
21 #include "utils.h"
22 #include "ip_common.h"
23
24 #define VXLAN_ATTRSET(attrs, type) (((attrs) & (1L << (type))) != 0)
25
print_explain(FILE * f)26 static void print_explain(FILE *f)
27 {
28 fprintf(f,
29 "Usage: ... vxlan id VNI\n"
30 " [ { group | remote } IP_ADDRESS ]\n"
31 " [ local ADDR ]\n"
32 " [ ttl TTL ]\n"
33 " [ tos TOS ]\n"
34 " [ flowlabel LABEL ]\n"
35 " [ dev PHYS_DEV ]\n"
36 " [ dstport PORT ]\n"
37 " [ srcport MIN MAX ]\n"
38 " [ [no]learning ]\n"
39 " [ [no]proxy ]\n"
40 " [ [no]rsc ]\n"
41 " [ [no]l2miss ]\n"
42 " [ [no]l3miss ]\n"
43 " [ ageing SECONDS ]\n"
44 " [ maxaddress NUMBER ]\n"
45 " [ [no]udpcsum ]\n"
46 " [ [no]udp6zerocsumtx ]\n"
47 " [ [no]udp6zerocsumrx ]\n"
48 " [ [no]remcsumtx ] [ [no]remcsumrx ]\n"
49 " [ [no]external ] [ gbp ] [ gpe ]\n"
50 "\n"
51 "Where: VNI := 0-16777215\n"
52 " ADDR := { IP_ADDRESS | any }\n"
53 " TOS := { NUMBER | inherit }\n"
54 " TTL := { 1..255 | inherit }\n"
55 " LABEL := 0-1048575\n"
56 );
57 }
58
explain(void)59 static void explain(void)
60 {
61 print_explain(stderr);
62 }
63
check_duparg(__u64 * attrs,int type,const char * key,const char * argv)64 static void check_duparg(__u64 *attrs, int type, const char *key,
65 const char *argv)
66 {
67 if (!VXLAN_ATTRSET(*attrs, type)) {
68 *attrs |= (1L << type);
69 return;
70 }
71 duparg2(key, argv);
72 }
73
vxlan_parse_opt(struct link_util * lu,int argc,char ** argv,struct nlmsghdr * n)74 static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv,
75 struct nlmsghdr *n)
76 {
77 __u32 vni = 0;
78 __u32 gaddr = 0;
79 __u32 daddr = 0;
80 struct in6_addr gaddr6 = IN6ADDR_ANY_INIT;
81 struct in6_addr daddr6 = IN6ADDR_ANY_INIT;
82 __u8 learning = 1;
83 __u16 dstport = 0;
84 __u8 metadata = 0;
85 __u64 attrs = 0;
86 bool set_op = (n->nlmsg_type == RTM_NEWLINK &&
87 !(n->nlmsg_flags & NLM_F_CREATE));
88
89 while (argc > 0) {
90 if (!matches(*argv, "id") ||
91 !matches(*argv, "vni")) {
92 /* We will add ID attribute outside of the loop since we
93 * need to consider metadata information as well.
94 */
95 NEXT_ARG();
96 check_duparg(&attrs, IFLA_VXLAN_ID, "id", *argv);
97 if (get_u32(&vni, *argv, 0) ||
98 vni >= 1u << 24)
99 invarg("invalid id", *argv);
100 } else if (!matches(*argv, "group")) {
101 if (daddr || !IN6_IS_ADDR_UNSPECIFIED(&daddr6)) {
102 fprintf(stderr, "vxlan: both group and remote");
103 fprintf(stderr, " cannot be specified\n");
104 return -1;
105 }
106 NEXT_ARG();
107 check_duparg(&attrs, IFLA_VXLAN_GROUP, "group", *argv);
108 if (!inet_get_addr(*argv, &gaddr, &gaddr6)) {
109 fprintf(stderr, "Invalid address \"%s\"\n", *argv);
110 return -1;
111 }
112 if (!IN6_IS_ADDR_MULTICAST(&gaddr6) && !IN_MULTICAST(ntohl(gaddr)))
113 invarg("invalid group address", *argv);
114 } else if (!matches(*argv, "remote")) {
115 if (gaddr || !IN6_IS_ADDR_UNSPECIFIED(&gaddr6)) {
116 fprintf(stderr, "vxlan: both group and remote");
117 fprintf(stderr, " cannot be specified\n");
118 return -1;
119 }
120 NEXT_ARG();
121 check_duparg(&attrs, IFLA_VXLAN_GROUP, "remote", *argv);
122 if (!inet_get_addr(*argv, &daddr, &daddr6)) {
123 fprintf(stderr, "Invalid address \"%s\"\n", *argv);
124 return -1;
125 }
126 if (IN6_IS_ADDR_MULTICAST(&daddr6) || IN_MULTICAST(ntohl(daddr)))
127 invarg("invalid remote address", *argv);
128 } else if (!matches(*argv, "local")) {
129 __u32 saddr = 0;
130 struct in6_addr saddr6 = IN6ADDR_ANY_INIT;
131
132 NEXT_ARG();
133 check_duparg(&attrs, IFLA_VXLAN_LOCAL, "local", *argv);
134 if (strcmp(*argv, "any")) {
135 if (!inet_get_addr(*argv, &saddr, &saddr6)) {
136 fprintf(stderr, "Invalid address \"%s\"\n", *argv);
137 return -1;
138 }
139 }
140
141 if (IN_MULTICAST(ntohl(saddr)) || IN6_IS_ADDR_MULTICAST(&saddr6))
142 invarg("invalid local address", *argv);
143
144 if (saddr)
145 addattr_l(n, 1024, IFLA_VXLAN_LOCAL, &saddr, 4);
146 else if (!IN6_IS_ADDR_UNSPECIFIED(&saddr6))
147 addattr_l(n, 1024, IFLA_VXLAN_LOCAL6, &saddr6,
148 sizeof(struct in6_addr));
149 } else if (!matches(*argv, "dev")) {
150 unsigned int link;
151
152 NEXT_ARG();
153 check_duparg(&attrs, IFLA_VXLAN_LINK, "dev", *argv);
154 link = if_nametoindex(*argv);
155 if (link == 0) {
156 fprintf(stderr, "Cannot find device \"%s\"\n",
157 *argv);
158 exit(-1);
159 }
160 addattr32(n, 1024, IFLA_VXLAN_LINK, link);
161 } else if (!matches(*argv, "ttl") ||
162 !matches(*argv, "hoplimit")) {
163 unsigned int uval;
164 __u8 ttl = 0;
165
166 NEXT_ARG();
167 check_duparg(&attrs, IFLA_VXLAN_TTL, "ttl", *argv);
168 if (strcmp(*argv, "inherit") != 0) {
169 if (get_unsigned(&uval, *argv, 0))
170 invarg("invalid TTL", *argv);
171 if (uval > 255)
172 invarg("TTL must be <= 255", *argv);
173 ttl = uval;
174 }
175 addattr8(n, 1024, IFLA_VXLAN_TTL, ttl);
176 } else if (!matches(*argv, "tos") ||
177 !matches(*argv, "dsfield")) {
178 __u32 uval;
179 __u8 tos;
180
181 NEXT_ARG();
182 check_duparg(&attrs, IFLA_VXLAN_TOS, "tos", *argv);
183 if (strcmp(*argv, "inherit") != 0) {
184 if (rtnl_dsfield_a2n(&uval, *argv))
185 invarg("bad TOS value", *argv);
186 tos = uval;
187 } else
188 tos = 1;
189 addattr8(n, 1024, IFLA_VXLAN_TOS, tos);
190 } else if (!matches(*argv, "label") ||
191 !matches(*argv, "flowlabel")) {
192 __u32 uval;
193
194 NEXT_ARG();
195 check_duparg(&attrs, IFLA_VXLAN_LABEL, "flowlabel",
196 *argv);
197 if (get_u32(&uval, *argv, 0) ||
198 (uval & ~LABEL_MAX_MASK))
199 invarg("invalid flowlabel", *argv);
200 addattr32(n, 1024, IFLA_VXLAN_LABEL, htonl(uval));
201 } else if (!matches(*argv, "ageing")) {
202 __u32 age;
203
204 NEXT_ARG();
205 check_duparg(&attrs, IFLA_VXLAN_AGEING, "ageing",
206 *argv);
207 if (strcmp(*argv, "none") == 0)
208 age = 0;
209 else if (get_u32(&age, *argv, 0))
210 invarg("ageing timer", *argv);
211 addattr32(n, 1024, IFLA_VXLAN_AGEING, age);
212 } else if (!matches(*argv, "maxaddress")) {
213 __u32 maxaddr;
214
215 NEXT_ARG();
216 check_duparg(&attrs, IFLA_VXLAN_LIMIT,
217 "maxaddress", *argv);
218 if (strcmp(*argv, "unlimited") == 0)
219 maxaddr = 0;
220 else if (get_u32(&maxaddr, *argv, 0))
221 invarg("max addresses", *argv);
222 addattr32(n, 1024, IFLA_VXLAN_LIMIT, maxaddr);
223 } else if (!matches(*argv, "port") ||
224 !matches(*argv, "srcport")) {
225 struct ifla_vxlan_port_range range = { 0, 0 };
226
227 NEXT_ARG();
228 check_duparg(&attrs, IFLA_VXLAN_PORT_RANGE, "srcport",
229 *argv);
230 if (get_be16(&range.low, *argv, 0))
231 invarg("min port", *argv);
232 NEXT_ARG();
233 if (get_be16(&range.high, *argv, 0))
234 invarg("max port", *argv);
235 if (range.low || range.high) {
236 addattr_l(n, 1024, IFLA_VXLAN_PORT_RANGE,
237 &range, sizeof(range));
238 }
239 } else if (!matches(*argv, "dstport")) {
240 NEXT_ARG();
241 check_duparg(&attrs, IFLA_VXLAN_PORT, "dstport", *argv);
242 if (get_u16(&dstport, *argv, 0))
243 invarg("dst port", *argv);
244 } else if (!matches(*argv, "nolearning")) {
245 check_duparg(&attrs, IFLA_VXLAN_LEARNING, *argv, *argv);
246 learning = 0;
247 } else if (!matches(*argv, "learning")) {
248 check_duparg(&attrs, IFLA_VXLAN_LEARNING, *argv, *argv);
249 learning = 1;
250 } else if (!matches(*argv, "noproxy")) {
251 check_duparg(&attrs, IFLA_VXLAN_PROXY, *argv, *argv);
252 addattr8(n, 1024, IFLA_VXLAN_PROXY, 0);
253 } else if (!matches(*argv, "proxy")) {
254 check_duparg(&attrs, IFLA_VXLAN_PROXY, *argv, *argv);
255 addattr8(n, 1024, IFLA_VXLAN_PROXY, 1);
256 } else if (!matches(*argv, "norsc")) {
257 check_duparg(&attrs, IFLA_VXLAN_RSC, *argv, *argv);
258 addattr8(n, 1024, IFLA_VXLAN_RSC, 0);
259 } else if (!matches(*argv, "rsc")) {
260 check_duparg(&attrs, IFLA_VXLAN_RSC, *argv, *argv);
261 addattr8(n, 1024, IFLA_VXLAN_RSC, 1);
262 } else if (!matches(*argv, "nol2miss")) {
263 check_duparg(&attrs, IFLA_VXLAN_L2MISS, *argv, *argv);
264 addattr8(n, 1024, IFLA_VXLAN_L2MISS, 0);
265 } else if (!matches(*argv, "l2miss")) {
266 check_duparg(&attrs, IFLA_VXLAN_L2MISS, *argv, *argv);
267 addattr8(n, 1024, IFLA_VXLAN_L2MISS, 1);
268 } else if (!matches(*argv, "nol3miss")) {
269 check_duparg(&attrs, IFLA_VXLAN_L3MISS, *argv, *argv);
270 addattr8(n, 1024, IFLA_VXLAN_L3MISS, 0);
271 } else if (!matches(*argv, "l3miss")) {
272 check_duparg(&attrs, IFLA_VXLAN_L3MISS, *argv, *argv);
273 addattr8(n, 1024, IFLA_VXLAN_L3MISS, 1);
274 } else if (!matches(*argv, "udpcsum")) {
275 check_duparg(&attrs, IFLA_VXLAN_UDP_CSUM, *argv, *argv);
276 addattr8(n, 1024, IFLA_VXLAN_UDP_CSUM, 1);
277 } else if (!matches(*argv, "noudpcsum")) {
278 check_duparg(&attrs, IFLA_VXLAN_UDP_CSUM, *argv, *argv);
279 addattr8(n, 1024, IFLA_VXLAN_UDP_CSUM, 0);
280 } else if (!matches(*argv, "udp6zerocsumtx")) {
281 check_duparg(&attrs, IFLA_VXLAN_UDP_ZERO_CSUM6_TX,
282 *argv, *argv);
283 addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, 1);
284 } else if (!matches(*argv, "noudp6zerocsumtx")) {
285 check_duparg(&attrs, IFLA_VXLAN_UDP_ZERO_CSUM6_TX,
286 *argv, *argv);
287 addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_TX, 0);
288 } else if (!matches(*argv, "udp6zerocsumrx")) {
289 check_duparg(&attrs, IFLA_VXLAN_UDP_ZERO_CSUM6_RX,
290 *argv, *argv);
291 addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, 1);
292 } else if (!matches(*argv, "noudp6zerocsumrx")) {
293 check_duparg(&attrs, IFLA_VXLAN_UDP_ZERO_CSUM6_RX,
294 *argv, *argv);
295 addattr8(n, 1024, IFLA_VXLAN_UDP_ZERO_CSUM6_RX, 0);
296 } else if (!matches(*argv, "remcsumtx")) {
297 check_duparg(&attrs, IFLA_VXLAN_REMCSUM_TX,
298 *argv, *argv);
299 addattr8(n, 1024, IFLA_VXLAN_REMCSUM_TX, 1);
300 } else if (!matches(*argv, "noremcsumtx")) {
301 check_duparg(&attrs, IFLA_VXLAN_REMCSUM_TX,
302 *argv, *argv);
303 addattr8(n, 1024, IFLA_VXLAN_REMCSUM_TX, 0);
304 } else if (!matches(*argv, "remcsumrx")) {
305 check_duparg(&attrs, IFLA_VXLAN_REMCSUM_RX,
306 *argv, *argv);
307 addattr8(n, 1024, IFLA_VXLAN_REMCSUM_RX, 1);
308 } else if (!matches(*argv, "noremcsumrx")) {
309 check_duparg(&attrs, IFLA_VXLAN_REMCSUM_RX,
310 *argv, *argv);
311 addattr8(n, 1024, IFLA_VXLAN_REMCSUM_RX, 0);
312 } else if (!matches(*argv, "external")) {
313 check_duparg(&attrs, IFLA_VXLAN_COLLECT_METADATA,
314 *argv, *argv);
315 metadata = 1;
316 learning = 0;
317 /* we will add LEARNING attribute outside of the loop */
318 addattr8(n, 1024, IFLA_VXLAN_COLLECT_METADATA,
319 metadata);
320 } else if (!matches(*argv, "noexternal")) {
321 check_duparg(&attrs, IFLA_VXLAN_COLLECT_METADATA,
322 *argv, *argv);
323 metadata = 0;
324 addattr8(n, 1024, IFLA_VXLAN_COLLECT_METADATA,
325 metadata);
326 } else if (!matches(*argv, "gbp")) {
327 check_duparg(&attrs, IFLA_VXLAN_GBP, *argv, *argv);
328 addattr_l(n, 1024, IFLA_VXLAN_GBP, NULL, 0);
329 } else if (!matches(*argv, "gpe")) {
330 check_duparg(&attrs, IFLA_VXLAN_GPE, *argv, *argv);
331 addattr_l(n, 1024, IFLA_VXLAN_GPE, NULL, 0);
332 } else if (matches(*argv, "help") == 0) {
333 explain();
334 return -1;
335 } else {
336 fprintf(stderr, "vxlan: unknown command \"%s\"?\n", *argv);
337 explain();
338 return -1;
339 }
340 argc--, argv++;
341 }
342
343 if (metadata && VXLAN_ATTRSET(attrs, IFLA_VXLAN_ID)) {
344 fprintf(stderr, "vxlan: both 'external' and vni cannot be specified\n");
345 return -1;
346 }
347
348 if (!metadata && !VXLAN_ATTRSET(attrs, IFLA_VXLAN_ID)) {
349 fprintf(stderr, "vxlan: missing virtual network identifier\n");
350 return -1;
351 }
352
353 if ((gaddr || !IN6_IS_ADDR_UNSPECIFIED(&gaddr6)) &&
354 !VXLAN_ATTRSET(attrs, IFLA_VXLAN_LINK)) {
355 fprintf(stderr, "vxlan: 'group' requires 'dev' to be specified\n");
356 return -1;
357 }
358
359 if (!VXLAN_ATTRSET(attrs, IFLA_VXLAN_PORT) &&
360 VXLAN_ATTRSET(attrs, IFLA_VXLAN_GPE)) {
361 dstport = 4790;
362 } else if (!VXLAN_ATTRSET(attrs, IFLA_VXLAN_PORT) && !set_op) {
363 fprintf(stderr, "vxlan: destination port not specified\n"
364 "Will use Linux kernel default (non-standard value)\n");
365 fprintf(stderr,
366 "Use 'dstport 4789' to get the IANA assigned value\n"
367 "Use 'dstport 0' to get default and quiet this message\n");
368 }
369
370 addattr32(n, 1024, IFLA_VXLAN_ID, vni);
371 if (gaddr)
372 addattr_l(n, 1024, IFLA_VXLAN_GROUP, &gaddr, 4);
373 else if (daddr)
374 addattr_l(n, 1024, IFLA_VXLAN_GROUP, &daddr, 4);
375 else if (!IN6_IS_ADDR_UNSPECIFIED(&gaddr6))
376 addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &gaddr6, sizeof(struct in6_addr));
377 else if (!IN6_IS_ADDR_UNSPECIFIED(&daddr6))
378 addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &daddr6, sizeof(struct in6_addr));
379 else if (preferred_family == AF_INET)
380 addattr_l(n, 1024, IFLA_VXLAN_GROUP, &daddr, 4);
381 else if (preferred_family == AF_INET6)
382 addattr_l(n, 1024, IFLA_VXLAN_GROUP6, &daddr6, sizeof(struct in6_addr));
383
384 if (!set_op || VXLAN_ATTRSET(attrs, IFLA_VXLAN_LEARNING))
385 addattr8(n, 1024, IFLA_VXLAN_LEARNING, learning);
386
387 if (dstport)
388 addattr16(n, 1024, IFLA_VXLAN_PORT, htons(dstport));
389
390 return 0;
391 }
392
vxlan_print_opt(struct link_util * lu,FILE * f,struct rtattr * tb[])393 static void vxlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
394 {
395 __u32 vni;
396 unsigned int link;
397 __u8 tos;
398 __u32 maxaddr;
399 char s2[64];
400
401 if (!tb)
402 return;
403
404 if (!tb[IFLA_VXLAN_ID] ||
405 RTA_PAYLOAD(tb[IFLA_VXLAN_ID]) < sizeof(__u32))
406 return;
407
408 vni = rta_getattr_u32(tb[IFLA_VXLAN_ID]);
409 print_uint(PRINT_ANY, "id", "id %u ", vni);
410
411 if (tb[IFLA_VXLAN_GROUP]) {
412 __be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_GROUP]);
413
414 if (addr) {
415 if (IN_MULTICAST(ntohl(addr)))
416 print_string(PRINT_ANY,
417 "group",
418 "group %s ",
419 format_host(AF_INET, 4, &addr));
420 else
421 print_string(PRINT_ANY,
422 "remote",
423 "remote %s ",
424 format_host(AF_INET, 4, &addr));
425 }
426 } else if (tb[IFLA_VXLAN_GROUP6]) {
427 struct in6_addr addr;
428
429 memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_GROUP6]), sizeof(struct in6_addr));
430 if (!IN6_IS_ADDR_UNSPECIFIED(&addr)) {
431 if (IN6_IS_ADDR_MULTICAST(&addr))
432 print_string(PRINT_ANY,
433 "group6",
434 "group %s ",
435 format_host(AF_INET6,
436 sizeof(struct in6_addr),
437 &addr));
438 else
439 print_string(PRINT_ANY,
440 "remote6",
441 "remote %s ",
442 format_host(AF_INET6,
443 sizeof(struct in6_addr),
444 &addr));
445 }
446 }
447
448 if (tb[IFLA_VXLAN_LOCAL]) {
449 __be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_LOCAL]);
450
451 if (addr)
452 print_string(PRINT_ANY,
453 "local",
454 "local %s ",
455 format_host(AF_INET, 4, &addr));
456 } else if (tb[IFLA_VXLAN_LOCAL6]) {
457 struct in6_addr addr;
458
459 memcpy(&addr, RTA_DATA(tb[IFLA_VXLAN_LOCAL6]), sizeof(struct in6_addr));
460 if (!IN6_IS_ADDR_UNSPECIFIED(&addr))
461 print_string(PRINT_ANY,
462 "local6",
463 "local %s ",
464 format_host(AF_INET6,
465 sizeof(struct in6_addr),
466 &addr));
467 }
468
469 if (tb[IFLA_VXLAN_LINK] &&
470 (link = rta_getattr_u32(tb[IFLA_VXLAN_LINK]))) {
471 const char *n = if_indextoname(link, s2);
472
473 if (n)
474 print_string(PRINT_ANY, "link", "dev %s ", n);
475 else
476 print_uint(PRINT_ANY, "link_index", "dev %u ", link);
477 }
478
479 if (tb[IFLA_VXLAN_PORT_RANGE]) {
480 const struct ifla_vxlan_port_range *r
481 = RTA_DATA(tb[IFLA_VXLAN_PORT_RANGE]);
482 if (is_json_context()) {
483 open_json_object("port_range");
484 print_uint(PRINT_JSON, "low", NULL, ntohs(r->low));
485 print_uint(PRINT_JSON, "high", NULL, ntohs(r->high));
486 close_json_object();
487 } else {
488 fprintf(f, "srcport %u %u ",
489 ntohs(r->low), ntohs(r->high));
490 }
491 }
492
493 if (tb[IFLA_VXLAN_PORT])
494 print_uint(PRINT_ANY,
495 "port",
496 "dstport %u ",
497 rta_getattr_be16(tb[IFLA_VXLAN_PORT]));
498
499 if (tb[IFLA_VXLAN_LEARNING]) {
500 __u8 learning = rta_getattr_u8(tb[IFLA_VXLAN_LEARNING]);
501
502 print_bool(PRINT_JSON, "learning", NULL, learning);
503 if (!learning)
504 print_bool(PRINT_FP, NULL, "nolearning ", true);
505 }
506
507 if (tb[IFLA_VXLAN_PROXY] && rta_getattr_u8(tb[IFLA_VXLAN_PROXY]))
508 print_bool(PRINT_ANY, "proxy", "proxy ", true);
509
510 if (tb[IFLA_VXLAN_RSC] && rta_getattr_u8(tb[IFLA_VXLAN_RSC]))
511 print_bool(PRINT_ANY, "rsc", "rsc ", true);
512
513 if (tb[IFLA_VXLAN_L2MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L2MISS]))
514 print_bool(PRINT_ANY, "l2miss", "l2miss ", true);
515
516 if (tb[IFLA_VXLAN_L3MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L3MISS]))
517 print_bool(PRINT_ANY, "l3miss", "l3miss ", true);
518
519 if (tb[IFLA_VXLAN_TOS] &&
520 (tos = rta_getattr_u8(tb[IFLA_VXLAN_TOS]))) {
521 if (is_json_context()) {
522 print_0xhex(PRINT_JSON, "tos", "%#x", tos);
523 } else {
524 if (tos == 1)
525 fprintf(f, "tos %s ", "inherit");
526 else
527 fprintf(f, "tos %#x ", tos);
528 }
529 }
530
531 if (tb[IFLA_VXLAN_TTL]) {
532 __u8 ttl = rta_getattr_u8(tb[IFLA_VXLAN_TTL]);
533
534 if (ttl)
535 print_int(PRINT_ANY, "ttl", "ttl %d ", ttl);
536 else
537 print_int(PRINT_JSON, "ttl", NULL, ttl);
538 }
539
540 if (tb[IFLA_VXLAN_LABEL]) {
541 __u32 label = rta_getattr_u32(tb[IFLA_VXLAN_LABEL]);
542
543 if (label)
544 print_0xhex(PRINT_ANY,
545 "label",
546 "flowlabel %#x ",
547 ntohl(label));
548 }
549
550 if (tb[IFLA_VXLAN_AGEING]) {
551 __u32 age = rta_getattr_u32(tb[IFLA_VXLAN_AGEING]);
552
553 if (age == 0)
554 print_uint(PRINT_ANY, "ageing", "ageing none ", 0);
555 else
556 print_uint(PRINT_ANY, "ageing", "ageing %u ", age);
557 }
558
559 if (tb[IFLA_VXLAN_LIMIT] &&
560 ((maxaddr = rta_getattr_u32(tb[IFLA_VXLAN_LIMIT])) != 0))
561 print_uint(PRINT_ANY, "limit", "maxaddr %u ", maxaddr);
562
563 if (tb[IFLA_VXLAN_UDP_CSUM]) {
564 __u8 udp_csum = rta_getattr_u8(tb[IFLA_VXLAN_UDP_CSUM]);
565
566 if (is_json_context()) {
567 print_bool(PRINT_ANY, "udp_csum", NULL, udp_csum);
568 } else {
569 if (!udp_csum)
570 fputs("no", f);
571 fputs("udpcsum ", f);
572 }
573 }
574
575 if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]) {
576 __u8 csum6 = rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]);
577
578 if (is_json_context()) {
579 print_bool(PRINT_ANY,
580 "udp_zero_csum6_tx", NULL, csum6);
581 } else {
582 if (!csum6)
583 fputs("no", f);
584 fputs("udp6zerocsumtx ", f);
585 }
586 }
587
588 if (tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]) {
589 __u8 csum6 = rta_getattr_u8(tb[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]);
590
591 if (is_json_context()) {
592 print_bool(PRINT_ANY,
593 "udp_zero_csum6_rx",
594 NULL,
595 csum6);
596 } else {
597 if (!csum6)
598 fputs("no", f);
599 fputs("udp6zerocsumrx ", f);
600 }
601 }
602
603 if (tb[IFLA_VXLAN_REMCSUM_TX] &&
604 rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_TX]))
605 print_bool(PRINT_ANY, "remcsum_tx", "remcsumtx ", true);
606
607 if (tb[IFLA_VXLAN_REMCSUM_RX] &&
608 rta_getattr_u8(tb[IFLA_VXLAN_REMCSUM_RX]))
609 print_bool(PRINT_ANY, "remcsum_rx", "remcsumrx ", true);
610
611 if (tb[IFLA_VXLAN_COLLECT_METADATA] &&
612 rta_getattr_u8(tb[IFLA_VXLAN_COLLECT_METADATA]))
613 print_bool(PRINT_ANY, "collect_metadata", "external ", true);
614
615 if (tb[IFLA_VXLAN_GBP])
616 print_bool(PRINT_ANY, "gbp", "gbp ", true);
617 if (tb[IFLA_VXLAN_GPE])
618 print_bool(PRINT_ANY, "gpe", "gpe ", true);
619 }
620
vxlan_print_help(struct link_util * lu,int argc,char ** argv,FILE * f)621 static void vxlan_print_help(struct link_util *lu, int argc, char **argv,
622 FILE *f)
623 {
624 print_explain(f);
625 }
626
627 struct link_util vxlan_link_util = {
628 .id = "vxlan",
629 .maxattr = IFLA_VXLAN_MAX,
630 .parse_opt = vxlan_parse_opt,
631 .print_opt = vxlan_print_opt,
632 .print_help = vxlan_print_help,
633 };
634