libnl: /data/src/libnl3/lib/route/link/ipip.c Source File

libnl 3.7.0

ipip.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (c) 2014 Susant Sahani <susant@redhat.com>
4 */
5
6 /**
7 * @ingroup link
8 * @defgroup ipip IPIP
9 * ipip link module
10 *
11 * @details
12 * \b Link Type Name: "ipip"
13 *
14 * @route_doc{link_ipip, IPIP Documentation}
15 *
16 * @{
17 */
18
19 #include <netlink-private/netlink.h>
20 #include <netlink/netlink.h>
21 #include <netlink/attr.h>
22 #include <netlink/utils.h>
23 #include <netlink/object.h>
24 #include <netlink/route/rtnl.h>
25 #include <netlink/route/link/ipip.h>
26 #include <netlink-private/route/link/api.h>
27 #include <linux/if_tunnel.h>
28
29 #define IPIP_ATTR_LINK (1 << 0)
30 #define IPIP_ATTR_LOCAL (1 << 1)
31 #define IPIP_ATTR_REMOTE (1 << 2)
32 #define IPIP_ATTR_TTL (1 << 3)
33 #define IPIP_ATTR_TOS (1 << 4)
34 #define IPIP_ATTR_PMTUDISC (1 << 5)
35 #define IPIP_ATTR_FWMARK (1 << 6)
36
37 struct ipip_info
38 {
39 uint8_t ttl;
40 uint8_t tos;
41 uint8_t pmtudisc;
42 uint32_t link;
43 uint32_t local;
44 uint32_t remote;
45 uint32_t fwmark;
46 uint32_t ipip_mask;
47 };
48
49 static struct nla_policy ipip_policy[IFLA_IPTUN_MAX + 1] = {
50 [IFLA_IPTUN_LINK] = { .type = NLA_U32 },
51 [IFLA_IPTUN_LOCAL] = { .type = NLA_U32 },
52 [IFLA_IPTUN_REMOTE] = { .type = NLA_U32 },
53 [IFLA_IPTUN_TTL] = { .type = NLA_U8 },
54 [IFLA_IPTUN_TOS] = { .type = NLA_U8 },
55 [IFLA_IPTUN_PMTUDISC] = { .type = NLA_U8 },
56 [IFLA_IPTUN_FWMARK] = { .type = NLA_U32 },
57 };
58
59 static int ipip_alloc(struct rtnl_link *link)
60 {
61 struct ipip_info *ipip;
62
63 if (link->l_info)
64 memset(link->l_info, 0, sizeof(*ipip));
65 else {
66 ipip = calloc(1, sizeof(*ipip));
67 if (!ipip)
68 return -NLE_NOMEM;
69
70 link->l_info = ipip;
71 }
72
73 return 0;
74 }
75
76 static int ipip_parse(struct rtnl_link *link, struct nlattr *data,
77 struct nlattr *xstats)
78 {
79 struct nlattr *tb[IFLA_IPTUN_MAX + 1];
80 struct ipip_info *ipip;
81 int err;
82
83 NL_DBG(3, "Parsing IPIP link info\n");
84
85 err = nla_parse_nested(tb, IFLA_IPTUN_MAX, data, ipip_policy);
86 if (err < 0)
87 goto errout;
88
89 err = ipip_alloc(link);
90 if (err < 0)
91 goto errout;
92
93 ipip = link->l_info;
94
95 if (tb[IFLA_IPTUN_LINK]) {
96 ipip->link = nla_get_u32(tb[IFLA_IPTUN_LINK]);
97 ipip->ipip_mask |= IPIP_ATTR_LINK;
98 }
99
100 if (tb[IFLA_IPTUN_LOCAL]) {
101 ipip->local = nla_get_u32(tb[IFLA_IPTUN_LOCAL]);
102 ipip->ipip_mask |= IPIP_ATTR_LOCAL;
103 }
104
105 if (tb[IFLA_IPTUN_REMOTE]) {
106 ipip->remote = nla_get_u32(tb[IFLA_IPTUN_REMOTE]);
107 ipip->ipip_mask |= IPIP_ATTR_REMOTE;
108 }
109
110 if (tb[IFLA_IPTUN_TTL]) {
111 ipip->ttl = nla_get_u8(tb[IFLA_IPTUN_TTL]);
112 ipip->ipip_mask |= IPIP_ATTR_TTL;
113 }
114
115 if (tb[IFLA_IPTUN_TOS]) {
116 ipip->tos = nla_get_u8(tb[IFLA_IPTUN_TOS]);
117 ipip->ipip_mask |= IPIP_ATTR_TOS;
118 }
119
120 if (tb[IFLA_IPTUN_PMTUDISC]) {
121 ipip->pmtudisc = nla_get_u8(tb[IFLA_IPTUN_PMTUDISC]);
122 ipip->ipip_mask |= IPIP_ATTR_PMTUDISC;
123 }
124
125 if (tb[IFLA_IPTUN_FWMARK]) {
126 ipip->fwmark = nla_get_u32(tb[IFLA_IPTUN_FWMARK]);
127 ipip->ipip_mask |= IPIP_ATTR_FWMARK;
128 }
129
130 err = 0;
131
132 errout:
133 return err;
134 }
135
136 static int ipip_put_attrs(struct nl_msg *msg, struct rtnl_link *link)
137 {
138 struct ipip_info *ipip = link->l_info;
139 struct nlattr *data;
140
141 data = nla_nest_start(msg, IFLA_INFO_DATA);
142 if (!data)
143 return -NLE_MSGSIZE;
144
145 if (ipip->ipip_mask & IPIP_ATTR_LINK)
146 NLA_PUT_U32(msg, IFLA_IPTUN_LINK, ipip->link);
147
148 if (ipip->ipip_mask & IPIP_ATTR_LOCAL)
149 NLA_PUT_U32(msg, IFLA_IPTUN_LOCAL, ipip->local);
150
151 if (ipip->ipip_mask & IPIP_ATTR_REMOTE)
152 NLA_PUT_U32(msg, IFLA_IPTUN_REMOTE, ipip->remote);
153
154 if (ipip->ipip_mask & IPIP_ATTR_TTL)
155 NLA_PUT_U8(msg, IFLA_IPTUN_TTL, ipip->ttl);
156
157 if (ipip->ipip_mask & IPIP_ATTR_TOS)
158 NLA_PUT_U8(msg, IFLA_IPTUN_TOS, ipip->tos);
159
160 if (ipip->ipip_mask & IPIP_ATTR_PMTUDISC)
161 NLA_PUT_U8(msg, IFLA_IPTUN_PMTUDISC, ipip->pmtudisc);
162
163 if (ipip->ipip_mask & IPIP_ATTR_FWMARK)
164 NLA_PUT_U32(msg, IFLA_IPTUN_FWMARK, ipip->fwmark);
165
166 nla_nest_end(msg, data);
167
168 nla_put_failure:
169 return 0;
170 }
171
172 static void ipip_free(struct rtnl_link *link)
173 {
174 struct ipip_info *ipip = link->l_info;
175
176 free(ipip);
177 link->l_info = NULL;
178 }
179
180 static void ipip_dump_line(struct rtnl_link *link, struct nl_dump_params *p)
181 {
182 nl_dump(p, "ipip : %s", link->l_name);
183 }
184
185 static void ipip_dump_details(struct rtnl_link *link, struct nl_dump_params *p)
186 {
187 struct ipip_info *ipip = link->l_info;
188 char *name, addr[INET_ADDRSTRLEN];
189 struct rtnl_link *parent;
190
191 if (ipip->ipip_mask & IPIP_ATTR_LINK) {
192 nl_dump(p, " link ");
193
194 name = NULL;
195 parent = link_lookup(link->ce_cache, ipip->link);
196 if (parent)
197 name = rtnl_link_get_name(parent);
198
199 if (name)
200 nl_dump_line(p, "%s\n", name);
201 else
202 nl_dump_line(p, "%u\n", ipip->link);
203 }
204
205 if (ipip->ipip_mask & IPIP_ATTR_LOCAL) {
206 nl_dump(p, " local ");
207 if(inet_ntop(AF_INET, &ipip->local, addr, sizeof(addr)))
208 nl_dump_line(p, "%s\n", addr);
209 else
210 nl_dump_line(p, "%#x\n", ntohs(ipip->local));
211 }
212
213 if (ipip->ipip_mask & IPIP_ATTR_REMOTE) {
214 nl_dump(p, " remote ");
215 if(inet_ntop(AF_INET, &ipip->remote, addr, sizeof(addr)))
216 nl_dump_line(p, "%s\n", addr);
217 else
218 nl_dump_line(p, "%#x\n", ntohs(ipip->remote));
219 }
220
221 if (ipip->ipip_mask & IPIP_ATTR_TTL) {
222 nl_dump(p, " ttl ");
223 nl_dump_line(p, "%u\n", ipip->ttl);
224 }
225
226 if (ipip->ipip_mask & IPIP_ATTR_TOS) {
227 nl_dump(p, " tos ");
228 nl_dump_line(p, "%u\n", ipip->tos);
229 }
230
231 if (ipip->ipip_mask & IPIP_ATTR_PMTUDISC) {
232 nl_dump(p, " pmtudisc ");
233 nl_dump_line(p, "enabled (%#x)\n", ipip->pmtudisc);
234 }
235
236 if (ipip->ipip_mask & IPIP_ATTR_FWMARK) {
237 nl_dump(p, " fwmark ");
238 nl_dump_line(p, "%x\n", ipip->fwmark);
239 }
240 }
241
242 static int ipip_clone(struct rtnl_link *dst, struct rtnl_link *src)
243 {
244 struct ipip_info *ipip_dst, *ipip_src = src->l_info;
245 int err;
246
247 dst->l_info = NULL;
248
249 err = rtnl_link_set_type(dst, "ipip");
250 if (err < 0)
251 return err;
252
253 ipip_dst = dst->l_info;
254
255 if (!ipip_dst || !ipip_src)
256 BUG();
257
258 memcpy(ipip_dst, ipip_src, sizeof(struct ipip_info));
259
260 return 0;
261 }
262
263 static struct rtnl_link_info_ops ipip_info_ops = {
264 .io_name = "ipip",
265 .io_alloc = ipip_alloc,
266 .io_parse = ipip_parse,
267 .io_dump = {
268 [NL_DUMP_LINE] = ipip_dump_line,
269 [NL_DUMP_DETAILS] = ipip_dump_details,
270 },
271 .io_clone = ipip_clone,
272 .io_put_attrs = ipip_put_attrs,
273 .io_free = ipip_free,
274 };
275
276 #define IS_IPIP_LINK_ASSERT(link) \
277 if ((link)->l_info_ops != &ipip_info_ops) { \
278 APPBUG("Link is not a ipip link. set type \"ipip\" first."); \
279 return -NLE_OPNOTSUPP; \
280 }
281
282 struct rtnl_link *rtnl_link_ipip_alloc(void)
283 {
284 struct rtnl_link *link;
285 int err;
286
287 link = rtnl_link_alloc();
288 if (!link)
289 return NULL;
290
291 err = rtnl_link_set_type(link, "ipip");
292 if (err < 0) {
293 rtnl_link_put(link);
294 return NULL;
295 }
296
297 return link;
298 }
299
300 /**
301 * Check if link is a IPIP link
302 * @arg link Link object
303 *
304 * @return True if link is a IPIP link, otherwise false is returned.
305 */
306 int rtnl_link_is_ipip(struct rtnl_link *link)
307 {
308 return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "ipip");
309 }
310
311 /**
312 * Create a new ipip tunnel device
313 * @arg sock netlink socket
314 * @arg name name of the tunnel deviceL
315 *
316 * Creates a new ipip tunnel device in the kernel
317 * @return 0 on success or a negative error code
318 */
319 int rtnl_link_ipip_add(struct nl_sock *sk, const char *name)
320 {
321 struct rtnl_link *link;
322 int err;
323
324 link = rtnl_link_ipip_alloc();
325 if (!link)
326 return -NLE_NOMEM;
327
328 if(name)
329 rtnl_link_set_name(link, name);
330
331 err = rtnl_link_add(sk, link, NLM_F_CREATE);
332 rtnl_link_put(link);
333
334 return err;
335 }
336
337 /**
338 * Set IPIP tunnel interface index
339 * @arg link Link object
340 * @arg index interface index
341 *
342 * @return 0 on success or a negative error code
343 */
344 int rtnl_link_ipip_set_link(struct rtnl_link *link, uint32_t index)
345 {
346 struct ipip_info *ipip = link->l_info;
347
348 IS_IPIP_LINK_ASSERT(link);
349
350 ipip->link = index;
351 ipip->ipip_mask |= IPIP_ATTR_LINK;
352
353 return 0;
354 }
355
356 /**
357 * Get IPIP tunnel interface index
358 * @arg link Link object
359 *
360 * @return interface index value
361 */
362 uint32_t rtnl_link_ipip_get_link(struct rtnl_link *link)
363 {
364 struct ipip_info *ipip = link->l_info;
365
366 IS_IPIP_LINK_ASSERT(link);
367
368 return ipip->link;
369 }
370
371 /**
372 * Set IPIP tunnel local address
373 * @arg link Link object
374 * @arg addr local address
375 *
376 * @return 0 on success or a negative error code
377 */
378 int rtnl_link_ipip_set_local(struct rtnl_link *link, uint32_t addr)
379 {
380 struct ipip_info *ipip = link->l_info;
381
382 IS_IPIP_LINK_ASSERT(link);
383
384 ipip->local = addr;
385 ipip->ipip_mask |= IPIP_ATTR_LOCAL;
386
387 return 0;
388 }
389
390 /**
391 * Get IPIP tunnel local address
392 * @arg link Link object
393 *
394 * @return local address value
395 */
396 uint32_t rtnl_link_ipip_get_local(struct rtnl_link *link)
397 {
398 struct ipip_info *ipip = link->l_info;
399
400 IS_IPIP_LINK_ASSERT(link);
401
402 return ipip->local;
403 }
404
405 /**
406 * Set IPIP tunnel remote address
407 * @arg link Link object
408 * @arg remote remote address
409 *
410 * @return 0 on success or a negative error code
411 */
412 int rtnl_link_ipip_set_remote(struct rtnl_link *link, uint32_t addr)
413 {
414 struct ipip_info *ipip = link->l_info;
415
416 IS_IPIP_LINK_ASSERT(link);
417
418 ipip->remote = addr;
419 ipip->ipip_mask |= IPIP_ATTR_REMOTE;
420
421 return 0;
422 }
423
424 /**
425 * Get IPIP tunnel remote address
426 * @arg link Link object
427 *
428 * @return remote address
429 */
430 uint32_t rtnl_link_ipip_get_remote(struct rtnl_link *link)
431 {
432 struct ipip_info *ipip = link->l_info;
433
434 IS_IPIP_LINK_ASSERT(link);
435
436 return ipip->remote;
437 }
438
439 /**
440 * Set IPIP tunnel ttl
441 * @arg link Link object
442 * @arg ttl tunnel ttl
443 *
444 * @return 0 on success or a negative error code
445 */
446 int rtnl_link_ipip_set_ttl(struct rtnl_link *link, uint8_t ttl)
447 {
448 struct ipip_info *ipip = link->l_info;
449
450 IS_IPIP_LINK_ASSERT(link);
451
452 ipip->ttl = ttl;
453 ipip->ipip_mask |= IPIP_ATTR_TTL;
454
455 return 0;
456 }
457
458 /**
459 * Get IPIP tunnel ttl
460 * @arg link Link object
461 *
462 * @return ttl value
463 */
464 uint8_t rtnl_link_ipip_get_ttl(struct rtnl_link *link)
465 {
466 struct ipip_info *ipip = link->l_info;
467
468 IS_IPIP_LINK_ASSERT(link);
469
470 return ipip->ttl;
471 }
472
473 /**
474 * Set IPIP tunnel tos
475 * @arg link Link object
476 * @arg tos tunnel tos
477 *
478 * @return 0 on success or a negative error code
479 */
480 int rtnl_link_ipip_set_tos(struct rtnl_link *link, uint8_t tos)
481 {
482 struct ipip_info *ipip = link->l_info;
483
484 IS_IPIP_LINK_ASSERT(link);
485
486 ipip->tos = tos;
487 ipip->ipip_mask |= IPIP_ATTR_TOS;
488
489 return 0;
490 }
491
492 /**
493 * Get IPIP tunnel tos
494 * @arg link Link object
495 *
496 * @return tos value
497 */
498 uint8_t rtnl_link_ipip_get_tos(struct rtnl_link *link)
499 {
500 struct ipip_info *ipip = link->l_info;
501
502 IS_IPIP_LINK_ASSERT(link);
503
504 return ipip->tos;
505 }
506
507 /**
508 * Set IPIP tunnel path MTU discovery
509 * @arg link Link object
510 * @arg pmtudisc path MTU discovery
511 *
512 * @return 0 on success or a negative error code
513 */
514 int rtnl_link_ipip_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc)
515 {
516 struct ipip_info *ipip = link->l_info;
517
518 IS_IPIP_LINK_ASSERT(link);
519
520 ipip->pmtudisc = pmtudisc;
521 ipip->ipip_mask |= IPIP_ATTR_PMTUDISC;
522
523 return 0;
524 }
525
526 /**
527 * Get IPIP path MTU discovery
528 * @arg link Link object
529 *
530 * @return pmtudisc value
531 */
532 uint8_t rtnl_link_ipip_get_pmtudisc(struct rtnl_link *link)
533 {
534 struct ipip_info *ipip = link->l_info;
535
536 IS_IPIP_LINK_ASSERT(link);
537
538 return ipip->pmtudisc;
539 }
540
541 /**
542 * Set IPIP tunnel fwmark
543 * @arg link Link object
544 * @arg fwmark fwmark
545 *
546 * @return 0 on success or a negative error code
547 */
548 int rtnl_link_ipip_set_fwmark(struct rtnl_link *link, uint32_t fwmark)
549 {
550 struct ipip_info *ipip = link->l_info;
551
552 IS_IPIP_LINK_ASSERT(link);
553
554 ipip->fwmark = fwmark;
555 ipip->ipip_mask |= IPIP_ATTR_FWMARK;
556
557 return 0;
558 }
559
560 /**
561 * Get IPIP tunnel fwmark
562 * @arg link Link object
563 * @arg fwmark addr to fill in with the fwmark
564 *
565 * @return 0 on success or a negative error code
566 */
567 int rtnl_link_ipip_get_fwmark(struct rtnl_link *link, uint32_t *fwmark)
568 {
569 struct ipip_info *ipip = link->l_info;
570
571 IS_IPIP_LINK_ASSERT(link);
572
573 if (!(ipip->ipip_mask & IPIP_ATTR_FWMARK))
574 return -NLE_NOATTR;
575
576 *fwmark = ipip->fwmark;
577
578 return 0;
579 }
580
581 static void __init ipip_init(void)
582 {
583 rtnl_link_register_info(&ipip_info_ops);
584 }
585
586 static void __exit ipip_exit(void)
587 {
588 rtnl_link_unregister_info(&ipip_info_ops);
589 }
nla_get_u32
uint32_t nla_get_u32(const struct nlattr *nla)
Return payload of 32 bit integer attribute.
Definition: attr.c:699
NLA_PUT_U8
#define NLA_PUT_U8(msg, attrtype, value)
Add 8 bit integer attribute to netlink message.
Definition: attr.h:194
NLA_PUT_U32
#define NLA_PUT_U32(msg, attrtype, value)
Add 32 bit integer attribute to netlink message.
Definition: attr.h:230
nla_get_u8
uint8_t nla_get_u8(const struct nlattr *nla)
Return value of 8 bit integer attribute.
Definition: attr.c:599
nla_nest_start
struct nlattr * nla_nest_start(struct nl_msg *msg, int attrtype)
Start a new level of nested attributes.
Definition: attr.c:895
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:1013
nla_nest_end
int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
Finalize nesting of attributes.
Definition: attr.c:958
NLA_U8
@ NLA_U8
8 bit integer
Definition: attr.h:35
NLA_U32
@ NLA_U32
32 bit integer
Definition: attr.h:37
rtnl_link_ipip_set_tos
int rtnl_link_ipip_set_tos(struct rtnl_link *link, uint8_t tos)
Set IPIP tunnel tos.
Definition: ipip.c:480
rtnl_link_ipip_set_local
int rtnl_link_ipip_set_local(struct rtnl_link *link, uint32_t addr)
Set IPIP tunnel local address.
Definition: ipip.c:378
rtnl_link_ipip_set_remote
int rtnl_link_ipip_set_remote(struct rtnl_link *link, uint32_t addr)
Set IPIP tunnel remote address.
Definition: ipip.c:412
rtnl_link_ipip_get_remote
uint32_t rtnl_link_ipip_get_remote(struct rtnl_link *link)
Get IPIP tunnel remote address.
Definition: ipip.c:430
rtnl_link_ipip_get_local
uint32_t rtnl_link_ipip_get_local(struct rtnl_link *link)
Get IPIP tunnel local address.
Definition: ipip.c:396
rtnl_link_ipip_set_ttl
int rtnl_link_ipip_set_ttl(struct rtnl_link *link, uint8_t ttl)
Set IPIP tunnel ttl.
Definition: ipip.c:446
rtnl_link_ipip_set_fwmark
int rtnl_link_ipip_set_fwmark(struct rtnl_link *link, uint32_t fwmark)
Set IPIP tunnel fwmark.
Definition: ipip.c:548
rtnl_link_ipip_add
int rtnl_link_ipip_add(struct nl_sock *sk, const char *name)
Create a new ipip tunnel device.
Definition: ipip.c:319
rtnl_link_ipip_set_link
int rtnl_link_ipip_set_link(struct rtnl_link *link, uint32_t index)
Set IPIP tunnel interface index.
Definition: ipip.c:344
rtnl_link_is_ipip
int rtnl_link_is_ipip(struct rtnl_link *link)
Check if link is a IPIP link.
Definition: ipip.c:306
rtnl_link_ipip_get_ttl
uint8_t rtnl_link_ipip_get_ttl(struct rtnl_link *link)
Get IPIP tunnel ttl.
Definition: ipip.c:464
rtnl_link_ipip_set_pmtudisc
int rtnl_link_ipip_set_pmtudisc(struct rtnl_link *link, uint8_t pmtudisc)
Set IPIP tunnel path MTU discovery.
Definition: ipip.c:514
rtnl_link_ipip_get_tos
uint8_t rtnl_link_ipip_get_tos(struct rtnl_link *link)
Get IPIP tunnel tos.
Definition: ipip.c:498
rtnl_link_ipip_get_link
uint32_t rtnl_link_ipip_get_link(struct rtnl_link *link)
Get IPIP tunnel interface index.
Definition: ipip.c:362
rtnl_link_ipip_get_fwmark
int rtnl_link_ipip_get_fwmark(struct rtnl_link *link, uint32_t *fwmark)
Get IPIP tunnel fwmark.
Definition: ipip.c:567
rtnl_link_ipip_get_pmtudisc
uint8_t rtnl_link_ipip_get_pmtudisc(struct rtnl_link *link)
Get IPIP path MTU discovery.
Definition: ipip.c:532
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:124
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:159
rtnl_link_add
int rtnl_link_add(struct nl_sock *sk, struct rtnl_link *link, int flags)
Add virtual link.
Definition: link.c:1684
rtnl_link_get_name
char * rtnl_link_get_name(struct rtnl_link *link)
Return name of link object.
Definition: link.c:1952
rtnl_link_set_name
void rtnl_link_set_name(struct rtnl_link *link, const char *name)
Set name of link object.
Definition: link.c:1938
rtnl_link_put
void rtnl_link_put(struct rtnl_link *link)
Return a link object reference.
Definition: link.c:1919
rtnl_link_set_type
int rtnl_link_set_type(struct rtnl_link *link, const char *type)
Set type of link object.
Definition: link.c:2548
rtnl_link_alloc
struct rtnl_link * rtnl_link_alloc(void)
Allocate link object.
Definition: link.c:1910
nl_dump
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
Definition: utils.c:955
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
NL_DUMP_DETAILS
@ NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition: types.h:17
ipip_info
Definition: ipip.c:38
nl_dump_params
Dumping parameters.
Definition: types.h:28
nla_policy
Attribute validation policy.
Definition: attr.h:63
nla_policy::type
uint16_t type
Type of attribute or NLA_UNSPEC.
Definition: attr.h:65
rtnl_link
Link object.