libnl 3.5.0

ipgre.c
1 /*
2 * lib/route/link/ipgre.c IPGRE Link Info
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
7 * of the License.
8 *
9 * Copyright (c) 2014 Susant Sahani <susant@redhat.com>
10 */
11
12 /**
13 * @ingroup link
14 * @defgroup ipgre IPGRE
15 * ipgre link module
16 *
17 * @details
18 * \b Link Type Name: "ipgre"
19 *
20 * @route_doc{link_ipgre, IPGRE Documentation}
21 *
22 * @{
23 */
24
25 #include <netlink-private/netlink.h>
26 #include <netlink/netlink.h>
27 #include <netlink/attr.h>
28 #include <netlink/utils.h>
29 #include <netlink/object.h>
30 #include <netlink/route/rtnl.h>
31 #include <netlink/route/link/ipgre.h>
32 #include <netlink-private/route/link/api.h>
33 #include <linux/if_tunnel.h>
34
35 #define IPGRE_ATTR_LINK (1 << 0)
36 #define IPGRE_ATTR_IFLAGS (1 << 1)
37 #define IPGRE_ATTR_OFLAGS (1 << 2)
38 #define IPGRE_ATTR_IKEY (1 << 3)
39 #define IPGRE_ATTR_OKEY (1 << 4)
40 #define IPGRE_ATTR_LOCAL (1 << 5)
41 #define IPGRE_ATTR_REMOTE (1 << 6)
42 #define IPGRE_ATTR_TTL (1 << 7)
43 #define IPGRE_ATTR_TOS (1 << 8)
44 #define IPGRE_ATTR_PMTUDISC (1 << 9)
45
46 struct ipgre_info
47 {
48 uint8_t ttl;
49 uint8_t tos;
50 uint8_t pmtudisc;
51 uint16_t iflags;
52 uint16_t oflags;
53 uint32_t ikey;
54 uint32_t okey;
55 uint32_t link;
56 uint32_t local;
57 uint32_t remote;
58 uint32_t ipgre_mask;
59 };
60
61 static struct nla_policy ipgre_policy[IFLA_GRE_MAX + 1] = {
62 [IFLA_GRE_LINK] = { .type = NLA_U32 },
63 [IFLA_GRE_IFLAGS] = { .type = NLA_U16 },
64 [IFLA_GRE_OFLAGS] = { .type = NLA_U16 },
65 [IFLA_GRE_IKEY] = { .type = NLA_U32 },
66 [IFLA_GRE_OKEY] = { .type = NLA_U32 },
67 [IFLA_GRE_LOCAL] = { .type = NLA_U32 },
68 [IFLA_GRE_REMOTE] = { .type = NLA_U32 },
69 [IFLA_GRE_TTL] = { .type = NLA_U8 },
70 [IFLA_GRE_TOS] = { .type = NLA_U8 },
71 [IFLA_GRE_PMTUDISC] = { .type = NLA_U8 },
72 };
73
74 static int ipgre_alloc(struct rtnl_link *link)
75 {
76 struct ipgre_info *ipgre;
77
78 if (link->l_info)
79 memset(link->l_info, 0, sizeof(*ipgre));
80 else {
81 ipgre = calloc(1, sizeof(*ipgre));
82 if (!ipgre)
83 return -NLE_NOMEM;
84
85 link->l_info = ipgre;
86 }
87
88 return 0;
89 }
90
91 static int ipgre_parse(struct rtnl_link *link, struct nlattr *data,
92 struct nlattr *xstats)
93 {
94 struct nlattr *tb[IFLA_GRE_MAX + 1];
95 struct ipgre_info *ipgre;
96 int err;
97
98 NL_DBG(3, "Parsing IPGRE link info\n");
99
100 err = nla_parse_nested(tb, IFLA_GRE_MAX, data, ipgre_policy);
101 if (err < 0)
102 goto errout;
103
104 err = ipgre_alloc(link);
105 if (err < 0)
106 goto errout;
107
108 ipgre = link->l_info;
109
110 if (tb[IFLA_GRE_LINK]) {
111 ipgre->link = nla_get_u32(tb[IFLA_GRE_LINK]);
112 ipgre->ipgre_mask |= IPGRE_ATTR_LINK;
113 }
114
115 if (tb[IFLA_GRE_IFLAGS]) {
116 ipgre->iflags = nla_get_u16(tb[IFLA_GRE_IFLAGS]);
117 ipgre->ipgre_mask |= IPGRE_ATTR_IFLAGS;
118 }
119
120 if (tb[IFLA_GRE_OFLAGS]) {
121 ipgre->oflags = nla_get_u16(tb[IFLA_GRE_OFLAGS]);
122 ipgre->ipgre_mask |= IPGRE_ATTR_OFLAGS;
123 }
124
125 if (tb[IFLA_GRE_IKEY]) {
126 ipgre->ikey = nla_get_u32(tb[IFLA_GRE_IKEY]);
127 ipgre->ipgre_mask |= IPGRE_ATTR_IKEY;
128 }
129
130 if (tb[IFLA_GRE_OKEY]) {
131 ipgre->okey = nla_get_u32(tb[IFLA_GRE_OKEY]);
132 ipgre->ipgre_mask |= IPGRE_ATTR_OKEY;
133 }
134
135 if (tb[IFLA_GRE_LOCAL]) {
136 ipgre->local = nla_get_u32(tb[IFLA_GRE_LOCAL]);
137 ipgre->ipgre_mask |= IPGRE_ATTR_LOCAL;
138 }
139
140 if (tb[IFLA_GRE_REMOTE]) {
141 ipgre->remote = nla_get_u32(tb[IFLA_GRE_REMOTE]);
142 ipgre->ipgre_mask |= IPGRE_ATTR_REMOTE;
143 }
144
145 if (tb[IFLA_GRE_TTL]) {
146 ipgre->ttl = nla_get_u8(tb[IFLA_GRE_TTL]);
147 ipgre->ipgre_mask |= IPGRE_ATTR_TTL;
148 }
149
150 if (tb[IFLA_GRE_TOS]) {
151 ipgre->tos = nla_get_u8(tb[IFLA_GRE_TOS]);
152 ipgre->ipgre_mask |= IPGRE_ATTR_TOS;
153 }
154
155 if (tb[IFLA_GRE_PMTUDISC]) {
156 ipgre->pmtudisc = nla_get_u8(tb[IFLA_GRE_PMTUDISC]);
157 ipgre->ipgre_mask |= IPGRE_ATTR_PMTUDISC;
158 }
159
160 err = 0;
161
162 errout:
163 return err;
164 }
165
166 static int ipgre_put_attrs(struct nl_msg *msg, struct rtnl_link *link)
167 {
168 struct ipgre_info *ipgre = link->l_info;
169 struct nlattr *data;
170
171 data = nla_nest_start(msg, IFLA_INFO_DATA);
172 if (!data)
173 return -NLE_MSGSIZE;
174
175 if (ipgre->ipgre_mask & IPGRE_ATTR_LINK)
176 NLA_PUT_U32(msg, IFLA_GRE_LINK, ipgre->link);
177
178 if (ipgre->ipgre_mask & IFLA_GRE_IFLAGS)
179 NLA_PUT_U16(msg, IFLA_GRE_IFLAGS, ipgre->iflags);
180
181 if (ipgre->ipgre_mask & IFLA_GRE_OFLAGS)
182 NLA_PUT_U16(msg, IFLA_GRE_OFLAGS, ipgre->oflags);
183
184 if (ipgre->ipgre_mask & IPGRE_ATTR_IKEY)
185 NLA_PUT_U32(msg, IFLA_GRE_IKEY, ipgre->ikey);
186
187 if (ipgre->ipgre_mask & IPGRE_ATTR_OKEY)
188 NLA_PUT_U32(msg, IFLA_GRE_OKEY, ipgre->okey);
189
190 if (ipgre->ipgre_mask & IPGRE_ATTR_LOCAL)
191 NLA_PUT_U32(msg, IFLA_GRE_LOCAL, ipgre->local);
192
193 if (ipgre->ipgre_mask & IPGRE_ATTR_REMOTE)
194 NLA_PUT_U32(msg, IFLA_GRE_REMOTE, ipgre->remote);
195
196 if (ipgre->ipgre_mask & IPGRE_ATTR_TTL)
197 NLA_PUT_U8(msg, IFLA_GRE_TTL, ipgre->ttl);
198
199 if (ipgre->ipgre_mask & IPGRE_ATTR_TOS)
200 NLA_PUT_U8(msg, IFLA_GRE_TOS, ipgre->tos);
201
202 if (ipgre->ipgre_mask & IPGRE_ATTR_PMTUDISC)
203 NLA_PUT_U8(msg, IFLA_GRE_PMTUDISC, ipgre->pmtudisc);
204
205 nla_nest_end(msg, data);
206
207 nla_put_failure:
208
209 return 0;
210 }
211
212 static void ipgre_free(struct rtnl_link *link)
213 {
214 struct ipgre_info *ipgre = link->l_info;
215
216 free(ipgre);
217 link->l_info = NULL;
218 }
219
220 static void ipgre_dump_line(struct rtnl_link *link, struct nl_dump_params *p)
221 {
222 nl_dump(p, "ipgre : %s", link->l_name);
223 }
224
225 static void ipgre_dump_details(struct rtnl_link *link, struct nl_dump_params *p)
226 {
227 struct ipgre_info *ipgre = link->l_info;
228 char *name, addr[INET_ADDRSTRLEN];
229 struct rtnl_link *parent;
230
231 if (ipgre->ipgre_mask & IPGRE_ATTR_LINK) {
232 nl_dump(p, " link ");
233
234 name = NULL;
235 parent = link_lookup(link->ce_cache, ipgre->link);
236 if (parent)
237 name = rtnl_link_get_name(parent);
238
239 if (name)
240 nl_dump_line(p, "%s\n", name);
241 else
242 nl_dump_line(p, "%u\n", ipgre->link);
243 }
244
245 if (ipgre->ipgre_mask & IPGRE_ATTR_IFLAGS) {
246 nl_dump(p, " iflags ");
247 nl_dump_line(p, "%x\n", ipgre->iflags);
248 }
249
250 if (ipgre->ipgre_mask & IPGRE_ATTR_OFLAGS) {
251 nl_dump(p, " oflags ");
252 nl_dump_line(p, "%x\n", ipgre->oflags);
253 }
254
255 if (ipgre->ipgre_mask & IPGRE_ATTR_IKEY) {
256 nl_dump(p, " ikey ");
257 nl_dump_line(p, "%x\n",ipgre->ikey);
258 }
259
260 if (ipgre->ipgre_mask & IPGRE_ATTR_OKEY) {
261 nl_dump(p, " okey ");
262 nl_dump_line(p, "%x\n", ipgre->okey);
263 }
264
265 if (ipgre->ipgre_mask & IPGRE_ATTR_LOCAL) {
266 nl_dump(p, " local ");
267 if(inet_ntop(AF_INET, &ipgre->local, addr, sizeof(addr)))
268 nl_dump_line(p, "%s\n", addr);
269 else
270 nl_dump_line(p, "%#x\n", ntohs(ipgre->local));
271 }
272
273 if (ipgre->ipgre_mask & IPGRE_ATTR_REMOTE) {
274 nl_dump(p, " remote ");
275 if(inet_ntop(AF_INET, &ipgre->remote, addr, sizeof(addr)))
276 nl_dump_line(p, "%s\n", addr);
277 else
278 nl_dump_line(p, "%#x\n", ntohs(ipgre->remote));
279 }
280
281 if (ipgre->ipgre_mask & IPGRE_ATTR_TTL) {
282 nl_dump(p, " ttl ");
283 nl_dump_line(p, "%u\n", ipgre->ttl);
284 }
285
286 if (ipgre->ipgre_mask & IPGRE_ATTR_TOS) {
287 nl_dump(p, " tos ");
288 nl_dump_line(p, "%u\n", ipgre->tos);
289 }
290
291 if (ipgre->ipgre_mask & IPGRE_ATTR_PMTUDISC) {
292 nl_dump(p, " pmtudisc ");
293 nl_dump_line(p, "enabled (%#x)\n", ipgre->pmtudisc);
294 }
295 }
296
297 static int ipgre_clone(struct rtnl_link *dst, struct rtnl_link *src)
298 {
299 struct ipgre_info *ipgre_dst, *ipgre_src = src->l_info;
300 int err;
301
302 dst->l_info = NULL;
303
304 err = rtnl_link_set_type(dst, "gre");
305 if (err < 0)
306 return err;
307
308 ipgre_dst = dst->l_info;
309
310 if (!ipgre_dst || !ipgre_src)
311 BUG();
312
313 memcpy(ipgre_dst, ipgre_src, sizeof(struct ipgre_info));
314
315 return 0;
316 }
317
318 static int ipgretap_clone(struct rtnl_link *dst, struct rtnl_link *src)
319 {
320 struct ipgre_info *ipgre_dst, *ipgre_src = src->l_info;
321 int err;
322
323 dst->l_info = NULL;
324
325 err = rtnl_link_set_type(dst, "gretap");
326 if (err < 0)
327 return err;
328
329 ipgre_dst = dst->l_info;
330
331 if (!ipgre_dst || !ipgre_src)
332 BUG();
333
334 memcpy(ipgre_dst, ipgre_src, sizeof(struct ipgre_info));
335
336 return 0;
337 }
338
339 static struct rtnl_link_info_ops ipgre_info_ops = {
340 .io_name = "gre",
341 .io_alloc = ipgre_alloc,
342 .io_parse = ipgre_parse,
343 .io_dump = {
344 [NL_DUMP_LINE] = ipgre_dump_line,
345 [NL_DUMP_DETAILS] = ipgre_dump_details,
346 },
347 .io_clone = ipgre_clone,
348 .io_put_attrs = ipgre_put_attrs,
349 .io_free = ipgre_free,
350 };
351
352 static struct rtnl_link_info_ops ipgretap_info_ops = {
353 .io_name = "gretap",
354 .io_alloc = ipgre_alloc,
355 .io_parse = ipgre_parse,
356 .io_dump = {
357 [NL_DUMP_LINE] = ipgre_dump_line,
358 [NL_DUMP_DETAILS] = ipgre_dump_details,
359 },
360 .io_clone = ipgretap_clone,
361 .io_put_attrs = ipgre_put_attrs,
362 .io_free = ipgre_free,
363 };
364
365 #define IS_IPGRE_LINK_ASSERT(link) \
366 if ((link)->l_info_ops != &ipgre_info_ops && \
367 (link)->l_info_ops != &ipgretap_info_ops) { \
368 APPBUG("Link is not a ipgre link. set type \"gre/gretap\" first.");\
369 return -NLE_OPNOTSUPP; \
370 }
371
372 struct rtnl_link *rtnl_link_ipgre_alloc(void)
373 {
374 struct rtnl_link *link;
375 int err;
376
377 link = rtnl_link_alloc();
378 if (!link)
379 return NULL;
380
381 err = rtnl_link_set_type(link, "gre");
382 if (err < 0) {
383 rtnl_link_put(link);
384 return NULL;
385 }
386
387 return link;
388 }
389
390 /**
391 * Check if link is a IPGRE link
392 * @arg link Link object
393 *
394 * @return True if link is a IPGRE link, otherwise 0 is returned.
395 */
396 int rtnl_link_is_ipgre(struct rtnl_link *link)
397 {
398 return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "gre");
399 }
400
401 /**
402 * Create a new IPGRE tunnel device
403 * @arg sock netlink socket
404 * @arg name name of the tunnel deviceL
405 *
406 * Creates a new ipip tunnel device in the kernel
407 * @return 0 on success or a negative error code
408 */
409 int rtnl_link_ipgre_add(struct nl_sock *sk, const char *name)
410 {
411 struct rtnl_link *link;
412 int err;
413
414 link = rtnl_link_ipgre_alloc();
415 if (!link)
416 return -NLE_NOMEM;
417
418 if(name)
419 rtnl_link_set_name(link, name);
420
421 err = rtnl_link_add(sk, link, NLM_F_CREATE);
422 rtnl_link_put(link);
423
424 return err;
425 }
426
427 struct rtnl_link *rtnl_link_ipgretap_alloc(void)
428 {
429 struct rtnl_link *link;
430 int err;
431
432 link = rtnl_link_alloc();
433 if (!link)
434 return NULL;
435
436 err = rtnl_link_set_type(link, "gretap");
437 if (err < 0) {
438 rtnl_link_put(link);
439 return NULL;
440 }
441
442 return link;
443 }
444
445 /**
446 * Check if link is a IPGRETAP link
447 * @arg link Link object
448 *
449 * @return True if link is a IPGRETAP link, otherwise 0 is returned.
450 */
451 int rtnl_link_is_ipgretap(struct rtnl_link *link)
452 {
453 return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "gretap");
454 }
455 /**
456 * Create a new IPGRETAP tunnel device
457 * @arg sock netlink socket
458 * @arg name name of the tunnel deviceL
459 *
460 * Creates a new IPGRETAP tunnel device in the kernel
461 * @return 0 on success or a negative error code
462 */
463 int rtnl_link_ipgretap_add(struct nl_sock *sk, const char *name)
464 {
465 struct rtnl_link *link;
466 int err;
467
468 link = rtnl_link_ipgretap_alloc();
469 if (!link)
470 return -NLE_NOMEM;
471
472 if(name)
473 rtnl_link_set_name(link, name);
474
475 err = rtnl_link_add(sk, link, NLM_F_CREATE);
476 rtnl_link_put(link);
477
478 return err;
479 }
480
481 /**
482 * Set IPGRE tunnel interface index
483 * @arg link Link object
484 * @arg index interface index
485 *
486 * @return 0 on success or a negative error code
487 */
488 int rtnl_link_ipgre_set_link(struct rtnl_link *link, uint32_t index)
489 {
490 struct ipgre_info *ipgre = link->l_info;
491
492 IS_IPGRE_LINK_ASSERT(link);
493
494 ipgre->link = index;
495 ipgre->ipgre_mask |= IPGRE_ATTR_LINK;
496
497 return 0;
498 }
499
500 /**
501 * Get IPGRE tunnel interface index
502 * @arg link Link object
503 *
504 * @return interface index
505 */
506 uint32_t rtnl_link_ipgre_get_link(struct rtnl_link *link)
507 {
508 struct ipgre_info *ipgre = link->l_info;
509
510 IS_IPGRE_LINK_ASSERT(link);
511
512 return ipgre->link;
513 }
514
515 /**
516 * Set IPGRE tunnel set iflags
517 * @arg link Link object
518 * @arg iflags gre iflags
519 *
520 * @return 0 on success or a negative error code
521 */
522 int rtnl_link_ipgre_set_iflags(struct rtnl_link *link, uint16_t iflags)
523 {
524 struct ipgre_info *ipgre = link->l_info;
525
526 IS_IPGRE_LINK_ASSERT(link);
527
528 ipgre->iflags = iflags;
529 ipgre->ipgre_mask |= IPGRE_ATTR_IFLAGS;
530
531 return 0;
532 }
533
534 /**
535 * Get IPGRE tunnel iflags
536 * @arg link Link object
537 *
538 * @return iflags
539 */
540 uint16_t rtnl_link_ipgre_get_iflags(struct rtnl_link *link)
541 {
542 struct ipgre_info *ipgre = link->l_info;
543
544 IS_IPGRE_LINK_ASSERT(link);
545
546 return ipgre->iflags;
547 }
548
549 /**
550 * Set IPGRE tunnel set oflags
551 * @arg link Link object
552 * @arg iflags gre oflags
553 *
554 * @return 0 on success or a negative error code
555 */
556 int rtnl_link_ipgre_set_oflags(struct rtnl_link *link, uint16_t oflags)
557 {
558 struct ipgre_info *ipgre = link->l_info;
559
560 IS_IPGRE_LINK_ASSERT(link);
561
562 ipgre->oflags = oflags;
563 ipgre->ipgre_mask |= IPGRE_ATTR_OFLAGS;
564
565 return 0;
566 }
567
568 /**
569 * Get IPGRE tunnel oflags
570 * @arg link Link object
571 *
572 * @return oflags
573 */
574 uint16_t rtnl_link_ipgre_get_oflags(struct rtnl_link *link)
575 {
576 struct ipgre_info *ipgre = link->l_info;
577
578 IS_IPGRE_LINK_ASSERT(link);
579
580 return ipgre->oflags;
581 }
582
583 /**
584 * Set IPGRE tunnel set ikey
585 * @arg link Link object
586 * @arg ikey gre ikey
587 *
588 * @return 0 on success or a negative error code
589 */
590 int rtnl_link_ipgre_set_ikey(struct rtnl_link *link, uint32_t ikey)
591 {
592 struct ipgre_info *ipgre = link->l_info;
593
594 IS_IPGRE_LINK_ASSERT(link);
595
596 ipgre->ikey = ikey;
597 ipgre->ipgre_mask |= IPGRE_ATTR_IKEY;
598
599 return 0;
600 }
601
602 /**
603 * Get IPGRE tunnel ikey
604 * @arg link Link object
605 *
606 * @return ikey
607 */
608 uint32_t rtnl_link_ipgre_get_ikey(struct rtnl_link *link)
609 {
610 struct ipgre_info *ipgre = link->l_info;
611
612 IS_IPGRE_LINK_ASSERT(link);
613
614 return ipgre->ikey;
615 }
616
617 /**
618 * Set IPGRE tunnel set okey
619 * @arg link Link object
620 * @arg okey gre okey
621 *
622 * @return 0 on success or a negative error code
623 */
624 int rtnl_link_ipgre_set_okey(struct rtnl_link *link, uint32_t okey)
625 {
626 struct ipgre_info *ipgre = link->l_info;
627
628 IS_IPGRE_LINK_ASSERT(link);
629
630 ipgre->okey = okey;
631 ipgre->ipgre_mask |= IPGRE_ATTR_OKEY;
632
633 return 0;
634 }
635
636 /**
637 * Get IPGRE tunnel okey
638 * @arg link Link object
639 *
640 * @return okey value
641 */
642 uint32_t rtnl_link_ipgre_get_okey(struct rtnl_link *link)
643 {
644 struct ipgre_info *ipgre = link->l_info;
645
646 IS_IPGRE_LINK_ASSERT(link);
647
648 return ipgre->okey;
649 }
650
651 /**
652 * Set IPGRE tunnel local address
653 * @arg link Link object
654 * @arg addr local address
655 *
656 * @return 0 on success or a negative error code
657 */
658 int rtnl_link_ipgre_set_local(struct rtnl_link *link, uint32_t addr)
659 {
660 struct ipgre_info *ipgre = link->l_info;
661
662 IS_IPGRE_LINK_ASSERT(link);
663
664 ipgre->local = addr;
665 ipgre->ipgre_mask |= IPGRE_ATTR_LOCAL;
666
667 return 0;
668 }
669
670 /**
671 * Get IPGRE tunnel local address
672 * @arg link Link object
673 *
674 * @return local address
675 */
676 uint32_t rtnl_link_ipgre_get_local(struct rtnl_link *link)
677 {
678 struct ipgre_info *ipgre = link->l_info;
679
680 IS_IPGRE_LINK_ASSERT(link);
681
682 return ipgre->local;
683 }
684
685 /**
686 * Set IPGRE tunnel remote address
687 * @arg link Link object
688 * @arg remote remote address
689 *
690 * @return 0 on success or a negative error code
691 */
692 int rtnl_link_ipgre_set_remote(struct rtnl_link *link, uint32_t remote)
693 {
694 struct ipgre_info *ipgre = link->l_info;
695
696 IS_IPGRE_LINK_ASSERT(link);
697
698 ipgre->remote = remote;
699 ipgre->ipgre_mask |= IPGRE_ATTR_REMOTE;
700
701 return 0;
702 }
703
704 /**
705 * Get IPGRE tunnel remote address
706 * @arg link Link object
707 *
708 * @return remote address on success or a negative error code
709 */
710 uint32_t rtnl_link_ipgre_get_remote(struct rtnl_link *link)
711 {
712 struct ipgre_info *ipgre = link->l_info;
713
714 IS_IPGRE_LINK_ASSERT(link);
715
716 return ipgre->remote;
717 }
718
719 /**
720 * Set IPGRE tunnel ttl
721 * @arg link Link object
722 * @arg ttl tunnel ttl
723 *
724 * @return 0 on success or a negative error code
725 */
726 int rtnl_link_ipgre_set_ttl(struct rtnl_link *link, uint8_t ttl)
727 {
728 struct ipgre_info *ipgre = link->l_info;
729
730 IS_IPGRE_LINK_ASSERT(link);
731
732 ipgre->ttl = ttl;
733 ipgre->ipgre_mask |= IPGRE_ATTR_TTL;
734
735 return 0;
736 }
737
738 /**
739 * Set IPGRE tunnel ttl
740 * @arg link Link object
741 *
742 * @return ttl value
743 */
744 uint8_t rtnl_link_ipgre_get_ttl(struct rtnl_link *link)
745 {
746 struct ipgre_info *ipgre = link->l_info;
747
748 IS_IPGRE_LINK_ASSERT(link);
749
750 return ipgre->ttl;
751 }
752
753 /**
754 * Set IPGRE tunnel tos
755 * @arg link Link object
756 * @arg tos tunnel tos
757 *
758 * @return 0 on success or a negative error code
759 */
760 int rtnl_link_ipgre_set_tos(struct rtnl_link *link, uint8_t tos)
761 {
762 struct ipgre_info *ipgre = link->l_info;
763
764 IS_IPGRE_LINK_ASSERT(link);
765
766 ipgre->tos = tos;
767 ipgre->ipgre_mask |= IPGRE_ATTR_TOS;
768
769 return 0;
770 }
771
772 /**
773 * Get IPGRE tunnel tos
774 * @arg link Link object
775 *
776 * @return tos value
777 */
778 uint8_t rtnl_link_ipgre_get_tos(struct rtnl_link *link)
779 {
780 struct ipgre_info *ipgre = link->l_info;
781
782 IS_IPGRE_LINK_ASSERT(link);
783
784 return ipgre->tos;
785 }
786
787 /**
788 * Set IPGRE tunnel path MTU discovery
789 * @arg link Link object
790 * @arg pmtudisc path MTU discovery
791 *
792 * @return 0 on success or a negative error code
793 */
794 int rtnl_link_ipgre_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc)
795 {
796 struct ipgre_info *ipgre = link->l_info;
797
798 IS_IPGRE_LINK_ASSERT(link);
799
800 ipgre->pmtudisc = pmtudisc;
801 ipgre->ipgre_mask |= IPGRE_ATTR_PMTUDISC;
802
803 return 0;
804 }
805
806 /**
807 * Get IPGRE path MTU discovery
808 * @arg link Link object
809 *
810 * @return pmtudisc value
811 */
812 uint8_t rtnl_link_ipgre_get_pmtudisc(struct rtnl_link *link)
813 {
814 struct ipgre_info *ipgre = link->l_info;
815
816 IS_IPGRE_LINK_ASSERT(link);
817
818 return ipgre->pmtudisc;
819 }
820
821 /* Function prototype for ABI-preserving wrapper (not in public header) to avoid
822 * GCC warning about missing prototype. */
823 uint8_t rtnl_link_get_pmtudisc(struct rtnl_link *link);
824
825 uint8_t rtnl_link_get_pmtudisc(struct rtnl_link *link)
826 {
827 /* rtnl_link_ipgre_get_pmtudisc() was wrongly named. Keep this
828 * to preserve ABI. */
829 return rtnl_link_ipgre_get_pmtudisc (link);
830 }
831
832 static void __init ipgre_init(void)
833 {
834 rtnl_link_register_info(&ipgre_info_ops);
835 rtnl_link_register_info(&ipgretap_info_ops);
836 }
837
838 static void __exit ipgre_exit(void)
839 {
840 rtnl_link_unregister_info(&ipgre_info_ops);
841 rtnl_link_unregister_info(&ipgretap_info_ops);
842 }
NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:22
NLA_U8
8 bit integer
Definition: attr.h:41
rtnl_link_ipgre_get_ttl
uint8_t rtnl_link_ipgre_get_ttl(struct rtnl_link *link)
Set IPGRE tunnel ttl.
Definition: ipgre.c:744
rtnl_link_is_ipgre
int rtnl_link_is_ipgre(struct rtnl_link *link)
Check if link is a IPGRE link.
Definition: ipgre.c:396
rtnl_link_ipgre_set_tos
int rtnl_link_ipgre_set_tos(struct rtnl_link *link, uint8_t tos)
Set IPGRE tunnel tos.
Definition: ipgre.c:760
rtnl_link_ipgre_set_ikey
int rtnl_link_ipgre_set_ikey(struct rtnl_link *link, uint32_t ikey)
Set IPGRE tunnel set ikey.
Definition: ipgre.c:590
rtnl_link_register_info
int rtnl_link_register_info(struct rtnl_link_info_ops *ops)
Register operations for a link info type.
Definition: api.c:111
rtnl_link_ipgretap_add
int rtnl_link_ipgretap_add(struct nl_sock *sk, const char *name)
Create a new IPGRETAP tunnel device.
Definition: ipgre.c:463
nla_policy
Attribute validation policy.
Definition: attr.h:69
nla_get_u8
uint8_t nla_get_u8(const struct nlattr *nla)
Return value of 8 bit integer attribute.
Definition: attr.c:607
rtnl_link_ipgre_set_link
int rtnl_link_ipgre_set_link(struct rtnl_link *link, uint32_t index)
Set IPGRE tunnel interface index.
Definition: ipgre.c:488
rtnl_link_alloc
struct rtnl_link * rtnl_link_alloc(void)
Allocate link object.
Definition: link.c:1931
rtnl_link_ipgre_get_ikey
uint32_t rtnl_link_ipgre_get_ikey(struct rtnl_link *link)
Get IPGRE tunnel ikey.
Definition: ipgre.c:608
rtnl_link_ipgre_get_link
uint32_t rtnl_link_ipgre_get_link(struct rtnl_link *link)
Get IPGRE tunnel interface index.
Definition: ipgre.c:506
nla_get_u32
uint32_t nla_get_u32(const struct nlattr *nla)
Return payload of 32 bit integer attribute.
Definition: attr.c:707
rtnl_link_ipgre_get_tos
uint8_t rtnl_link_ipgre_get_tos(struct rtnl_link *link)
Get IPGRE tunnel tos.
Definition: ipgre.c:778
rtnl_link
Link object.
rtnl_link_ipgre_set_iflags
int rtnl_link_ipgre_set_iflags(struct rtnl_link *link, uint16_t iflags)
Set IPGRE tunnel set iflags.
Definition: ipgre.c:522
NLA_PUT_U8
#define NLA_PUT_U8(msg, attrtype, value)
Add 8 bit integer attribute to netlink message.
Definition: attr.h:200
rtnl_link_ipgre_get_oflags
uint16_t rtnl_link_ipgre_get_oflags(struct rtnl_link *link)
Get IPGRE tunnel oflags.
Definition: ipgre.c:574
rtnl_link_is_ipgretap
int rtnl_link_is_ipgretap(struct rtnl_link *link)
Check if link is a IPGRETAP link.
Definition: ipgre.c:451
NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition: types.h:23
rtnl_link_get_name
char * rtnl_link_get_name(struct rtnl_link *link)
Return name of link object.
Definition: link.c:1973
nla_nest_end
int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
Finalize nesting of attributes.
Definition: attr.c:966
nla_parse_nested
int nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla, const struct nla_policy *policy)
Create attribute index based on nested attribute.
Definition: attr.c:1021
rtnl_link_ipgre_get_local
uint32_t rtnl_link_ipgre_get_local(struct rtnl_link *link)
Get IPGRE tunnel local address.
Definition: ipgre.c:676
NLA_U16
16 bit integer
Definition: attr.h:42
rtnl_link_ipgre_get_pmtudisc
uint8_t rtnl_link_ipgre_get_pmtudisc(struct rtnl_link *link)
Get IPGRE path MTU discovery.
Definition: ipgre.c:812
rtnl_link_set_name
void rtnl_link_set_name(struct rtnl_link *link, const char *name)
Set name of link object.
Definition: link.c:1959
rtnl_link_ipgre_set_local
int rtnl_link_ipgre_set_local(struct rtnl_link *link, uint32_t addr)
Set IPGRE tunnel local address.
Definition: ipgre.c:658
rtnl_link_set_type
int rtnl_link_set_type(struct rtnl_link *link, const char *type)
Set type of link object.
Definition: link.c:2568
NLA_PUT_U32
#define NLA_PUT_U32(msg, attrtype, value)
Add 32 bit integer attribute to netlink message.
Definition: attr.h:236
rtnl_link_ipgre_get_okey
uint32_t rtnl_link_ipgre_get_okey(struct rtnl_link *link)
Get IPGRE tunnel okey.
Definition: ipgre.c:642
rtnl_link_ipgre_set_pmtudisc
int rtnl_link_ipgre_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc)
Set IPGRE tunnel path MTU discovery.
Definition: ipgre.c:794
rtnl_link_ipgre_add
int rtnl_link_ipgre_add(struct nl_sock *sk, const char *name)
Create a new IPGRE tunnel device.
Definition: ipgre.c:409
rtnl_link_ipgre_get_remote
uint32_t rtnl_link_ipgre_get_remote(struct rtnl_link *link)
Get IPGRE tunnel remote address.
Definition: ipgre.c:710
ipgre_info
Definition: ipgre.c:46
rtnl_link_ipgre_set_okey
int rtnl_link_ipgre_set_okey(struct rtnl_link *link, uint32_t okey)
Set IPGRE tunnel set okey.
Definition: ipgre.c:624
rtnl_link_unregister_info
int rtnl_link_unregister_info(struct rtnl_link_info_ops *ops)
Unregister operations for a link info type.
Definition: api.c:146
nla_policy::type
uint16_t type
Type of attribute or NLA_UNSPEC.
Definition: attr.h:71
nla_get_u16
uint16_t nla_get_u16(const struct nlattr *nla)
Return payload of 16 bit integer attribute.
Definition: attr.c:657
NLA_U32
32 bit integer
Definition: attr.h:43
rtnl_link_ipgre_get_iflags
uint16_t rtnl_link_ipgre_get_iflags(struct rtnl_link *link)
Get IPGRE tunnel iflags.
Definition: ipgre.c:540
nl_dump_params
Dumping parameters.
Definition: types.h:33
NLA_PUT_U16
#define NLA_PUT_U16(msg, attrtype, value)
Add 16 bit integer attribute to netlink message.
Definition: attr.h:218
rtnl_link_ipgre_set_ttl
int rtnl_link_ipgre_set_ttl(struct rtnl_link *link, uint8_t ttl)
Set IPGRE tunnel ttl.
Definition: ipgre.c:726
nl_dump
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
Definition: utils.c:962
rtnl_link_put
void rtnl_link_put(struct rtnl_link *link)
Return a link object reference.
Definition: link.c:1940
rtnl_link_add
int rtnl_link_add(struct nl_sock *sk, struct rtnl_link *link, int flags)
Add virtual link.
Definition: link.c:1699
rtnl_link_ipgre_set_remote
int rtnl_link_ipgre_set_remote(struct rtnl_link *link, uint32_t remote)
Set IPGRE tunnel remote address.
Definition: ipgre.c:692
rtnl_link_ipgre_set_oflags
int rtnl_link_ipgre_set_oflags(struct rtnl_link *link, uint16_t oflags)
Set IPGRE tunnel set oflags.
Definition: ipgre.c:556
nla_nest_start
struct nlattr * nla_nest_start(struct nl_msg *msg, int attrtype)
Start a new level of nested attributes.
Definition: attr.c:903