libnl  3.7.0
macsec.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * Copyright (c) 2016 Sabrina Dubroca <sd@queasysnail.net>
4  */
5 
6 /**
7  * @ingroup link
8  * @defgroup macsec MACsec
9  * MACsec link module
10  *
11  * @details
12  * \b Link Type Name: "macsec"
13  *
14  * @route_doc{link_macsec, MACsec Documentation}
15  *
16  * @{
17  */
18 #include <netlink-private/netlink.h>
19 #include <netlink/netlink.h>
20 #include <netlink/attr.h>
21 #include <netlink/utils.h>
22 #include <netlink/object.h>
23 #include <netlink/route/rtnl.h>
24 #include <netlink/route/link/macsec.h>
25 #include <netlink-private/route/link/api.h>
26 #include <netlink-private/utils.h>
27 
28 #include <linux/if_macsec.h>
29 
30 /** @cond SKIP */
31 #define MACSEC_ATTR_SCI (1 << 0)
32 #define MACSEC_ATTR_ICV_LEN (1 << 1)
33 #define MACSEC_ATTR_CIPHER_SUITE (1 << 2)
34 #define MACSEC_ATTR_WINDOW (1 << 3)
35 #define MACSEC_ATTR_ENCODING_SA (1 << 4)
36 #define MACSEC_ATTR_ENCRYPT (1 << 5)
37 #define MACSEC_ATTR_PROTECT (1 << 6)
38 #define MACSEC_ATTR_INC_SCI (1 << 7)
39 #define MACSEC_ATTR_ES (1 << 8)
40 #define MACSEC_ATTR_SCB (1 << 9)
41 #define MACSEC_ATTR_REPLAY_PROTECT (1 << 10)
42 #define MACSEC_ATTR_VALIDATION (1 << 11)
43 #define MACSEC_ATTR_PORT (1 << 12)
44 #define MACSEC_ATTR_OFFLOAD (1 << 13)
45 
46 struct macsec_info {
47  int ifindex;
48  uint64_t sci;
49  uint16_t port;
50  uint64_t cipher_suite;
51  uint16_t icv_len;
52  uint32_t window;
53  enum macsec_validation_type validate;
54  uint8_t encoding_sa;
55 
56  uint8_t send_sci, end_station, scb, replay_protect, protect, encrypt, offload;
57 
58  uint32_t ce_mask;
59 };
60 
61 #define DEFAULT_ICV_LEN 16
62 
63 /** @endcond */
64 
65 static struct nla_policy macsec_policy[IFLA_MACSEC_MAX+1] = {
66  [IFLA_MACSEC_SCI] = { .type = NLA_U64 },
67  [IFLA_MACSEC_ICV_LEN] = { .type = NLA_U8 },
68  [IFLA_MACSEC_CIPHER_SUITE] = { .type = NLA_U64 },
69  [IFLA_MACSEC_WINDOW] = { .type = NLA_U32 },
70  [IFLA_MACSEC_ENCODING_SA] = { .type = NLA_U8 },
71  [IFLA_MACSEC_ENCRYPT] = { .type = NLA_U8 },
72  [IFLA_MACSEC_PROTECT] = { .type = NLA_U8 },
73  [IFLA_MACSEC_INC_SCI] = { .type = NLA_U8 },
74  [IFLA_MACSEC_ES] = { .type = NLA_U8 },
75  [IFLA_MACSEC_SCB] = { .type = NLA_U8 },
76  [IFLA_MACSEC_REPLAY_PROTECT] = { .type = NLA_U8 },
77  [IFLA_MACSEC_VALIDATION] = { .type = NLA_U8 },
78  [IFLA_MACSEC_OFFLOAD] = { .type = NLA_U8 },
79 };
80 
81 /**
82  * @name MACsec Object
83  * @{
84  */
85 
86 /**
87  * Allocate link object of type MACsec
88  *
89  * @return Allocated link object or NULL.
90  */
91 static int macsec_alloc(struct rtnl_link *link)
92 {
93  struct macsec_info *info;
94 
95  if (!link->l_info) {
96  link->l_info = malloc(sizeof(struct macsec_info));
97  if (!link->l_info)
98  return -NLE_NOMEM;
99  }
100 
101  memset(link->l_info, 0, sizeof(struct macsec_info));
102  info = link->l_info;
103 
104  info->cipher_suite = MACSEC_DEFAULT_CIPHER_ID;
105  info->icv_len = DEFAULT_ICV_LEN;
106  info->ce_mask = MACSEC_ATTR_CIPHER_SUITE | MACSEC_ATTR_ICV_LEN;
107 
108  return 0;
109 }
110 
111 static int macsec_parse(struct rtnl_link *link, struct nlattr *data,
112  struct nlattr *xstats)
113 {
114  struct nlattr *tb[IFLA_MACSEC_MAX+1];
115  struct macsec_info *info;
116  int err;
117 
118  NL_DBG(3, "Parsing MACsec link info\n");
119 
120  if ((err = nla_parse_nested(tb, IFLA_MACSEC_MAX, data, macsec_policy)) < 0)
121  goto errout;
122 
123  if ((err = macsec_alloc(link)) < 0)
124  goto errout;
125 
126  info = link->l_info;
127 
128  if (tb[IFLA_MACSEC_SCI]) {
129  info->sci = nla_get_u64(tb[IFLA_MACSEC_SCI]);
130  info->ce_mask |= MACSEC_ATTR_SCI;
131  }
132 
133  if (tb[IFLA_MACSEC_PROTECT]) {
134  info->protect = nla_get_u8(tb[IFLA_MACSEC_PROTECT]);
135  info->ce_mask |= MACSEC_ATTR_PROTECT;
136  }
137 
138  if (tb[IFLA_MACSEC_CIPHER_SUITE]) {
139  info->cipher_suite = nla_get_u64(tb[IFLA_MACSEC_CIPHER_SUITE]);
140  info->ce_mask |= MACSEC_ATTR_CIPHER_SUITE;
141  }
142 
143  if (tb[IFLA_MACSEC_ICV_LEN]) {
144  info->icv_len = nla_get_u8(tb[IFLA_MACSEC_ICV_LEN]);
145  info->ce_mask |= MACSEC_ATTR_ICV_LEN;
146  }
147 
148  if (tb[IFLA_MACSEC_ENCODING_SA]) {
149  info->encoding_sa = nla_get_u8(tb[IFLA_MACSEC_ENCODING_SA]);
150  info->ce_mask |= MACSEC_ATTR_ENCODING_SA;
151  }
152 
153  if (tb[IFLA_MACSEC_VALIDATION]) {
154  info->validate = nla_get_u8(tb[IFLA_MACSEC_VALIDATION]);
155  info->ce_mask |= MACSEC_ATTR_VALIDATION;
156  }
157 
158  if (tb[IFLA_MACSEC_ENCRYPT]) {
159  info->encrypt = nla_get_u8(tb[IFLA_MACSEC_ENCRYPT]);
160  info->ce_mask |= MACSEC_ATTR_ENCRYPT;
161  }
162 
163  if (tb[IFLA_MACSEC_OFFLOAD]) {
164  info->offload = nla_get_u8(tb[IFLA_MACSEC_OFFLOAD]);
165  info->ce_mask |= MACSEC_ATTR_OFFLOAD;
166  }
167 
168  if (tb[IFLA_MACSEC_INC_SCI]) {
169  info->send_sci = nla_get_u8(tb[IFLA_MACSEC_INC_SCI]);
170  info->ce_mask |= MACSEC_ATTR_INC_SCI;
171  }
172 
173  if (tb[IFLA_MACSEC_ES]) {
174  info->end_station = nla_get_u8(tb[IFLA_MACSEC_ES]);
175  info->ce_mask |= MACSEC_ATTR_ES;
176  }
177 
178  if (tb[IFLA_MACSEC_SCB]) {
179  info->scb = nla_get_u8(tb[IFLA_MACSEC_SCB]);
180  info->ce_mask |= MACSEC_ATTR_SCB;
181  }
182 
183  if (tb[IFLA_MACSEC_REPLAY_PROTECT]) {
184  info->replay_protect = nla_get_u8(tb[IFLA_MACSEC_REPLAY_PROTECT]);
185  info->ce_mask |= MACSEC_ATTR_REPLAY_PROTECT;
186  }
187 
188  if (tb[IFLA_MACSEC_WINDOW]) {
189  info->window = nla_get_u32(tb[IFLA_MACSEC_WINDOW]);
190  info->ce_mask |= MACSEC_ATTR_WINDOW;
191  }
192 
193  err = 0;
194 errout:
195  return err;
196 }
197 
198 static void macsec_free(struct rtnl_link *link)
199 {
200  free(link->l_info);
201  link->l_info = NULL;
202 }
203 
204 static const char *values_on_off[] = { "off", "on" };
205 
206 static const char *VALIDATE_STR[] = {
207  [MACSEC_VALIDATE_DISABLED] = "disabled",
208  [MACSEC_VALIDATE_CHECK] = "check",
209  [MACSEC_VALIDATE_STRICT] = "strict",
210 };
211 
212 static char *replay_protect_str(char *buf, uint8_t replay_protect, uint8_t window)
213 {
214  if (replay_protect == 1) {
215  sprintf(buf, "replay_protect on window %d", window);
216  } else if (replay_protect == 0) {
217  sprintf(buf, "replay_protect off");
218  } else {
219  buf[0] = '\0';
220  }
221 
222  return buf;
223 }
224 
225 /** @cond SKIP */
226 #define PRINT_FLAG(buf, i, field, c) ({ if (i->field == 1) *buf++ = c; })
227 /** @endcond */
228 static char *flags_str(char *buf, unsigned char len, struct macsec_info *info)
229 {
230  char *tmp = buf;
231  memset(tmp, 0, len);
232 
233  PRINT_FLAG(tmp, info, protect, 'P');
234  PRINT_FLAG(tmp, info, encrypt, 'E');
235  PRINT_FLAG(tmp, info, send_sci, 'S');
236  PRINT_FLAG(tmp, info, end_station, 'e');
237  PRINT_FLAG(tmp, info, scb, 's');
238  PRINT_FLAG(tmp, info, replay_protect, 'R');
239 
240  *tmp++ = ' ';
241  *tmp++ = 'v';
242  switch (info->validate) {
243  case MACSEC_VALIDATE_DISABLED:
244  *tmp++ = 'd';
245  break;
246  case MACSEC_VALIDATE_CHECK:
247  *tmp++ = 'c';
248  break;
249  case MACSEC_VALIDATE_STRICT:
250  *tmp++ = 's';
251  break;
252  default:
253  break;
254  }
255 
256  sprintf(tmp, " %d", info->encoding_sa);
257 
258  return buf;
259 }
260 
261 static void macsec_dump_line(struct rtnl_link *link, struct nl_dump_params *p)
262 {
263  struct macsec_info *info = link->l_info;
264  char tmp[128];
265 
266  nl_dump(p, "sci %016llx <%s>", (long long unsigned)ntohll(info->sci),
267  flags_str(tmp, sizeof(tmp), info));
268 }
269 
270 static void macsec_dump_details(struct rtnl_link *link, struct nl_dump_params *p)
271 {
272  struct macsec_info *info = link->l_info;
273  char tmp[128];
274 
275  nl_dump(p,
276  " sci %016llx protect %s encoding_sa %d encrypt %s send_sci %s validate %s %s\n",
277  (long long unsigned)ntohll(info->sci),
278  values_on_off[info->protect], info->encoding_sa,
279  values_on_off[info->encrypt], values_on_off[info->send_sci],
280  VALIDATE_STR[info->validate],
281  replay_protect_str(tmp, info->replay_protect, info->window));
282  nl_dump(p, " cipher suite: %016llx, icv_len %d\n",
283  (long long unsigned)info->cipher_suite, info->icv_len);
284 }
285 
286 static int macsec_clone(struct rtnl_link *dst, struct rtnl_link *src)
287 {
288  struct macsec_info *copy, *info = src->l_info;
289  int err;
290 
291  dst->l_info = NULL;
292  if ((err = rtnl_link_set_type(dst, "macsec")) < 0)
293  return err;
294  copy = dst->l_info;
295 
296  if (!info || !copy)
297  return -NLE_NOMEM;
298 
299  memcpy(copy, info, sizeof(struct macsec_info));
300 
301  return 0;
302 }
303 
304 static int macsec_put_attrs(struct nl_msg *msg, struct rtnl_link *link)
305 {
306  struct macsec_info *info = link->l_info;
307  struct nlattr *data;
308 
309  if (!(data = nla_nest_start(msg, IFLA_INFO_DATA)))
310  return -NLE_MSGSIZE;
311 
312  if (info->ce_mask & MACSEC_ATTR_SCI)
313  NLA_PUT_U64(msg, IFLA_MACSEC_SCI, info->sci);
314  else if (info->ce_mask & MACSEC_ATTR_PORT)
315  NLA_PUT_U16(msg, IFLA_MACSEC_PORT, htons(info->port));
316 
317  if ((info->ce_mask & MACSEC_ATTR_ENCRYPT))
318  NLA_PUT_U8(msg, IFLA_MACSEC_ENCRYPT, info->encrypt);
319 
320  if ((info->ce_mask & MACSEC_ATTR_OFFLOAD))
321  NLA_PUT_U8(msg, IFLA_MACSEC_OFFLOAD, info->offload);
322 
323  if (info->cipher_suite != MACSEC_DEFAULT_CIPHER_ID || info->icv_len != DEFAULT_ICV_LEN) {
324  NLA_PUT_U64(msg, IFLA_MACSEC_CIPHER_SUITE, info->cipher_suite);
325  NLA_PUT_U8(msg, IFLA_MACSEC_ICV_LEN, info->icv_len);
326  }
327 
328  if ((info->ce_mask & MACSEC_ATTR_INC_SCI))
329  NLA_PUT_U8(msg, IFLA_MACSEC_INC_SCI, info->send_sci);
330 
331  if ((info->ce_mask & MACSEC_ATTR_ES))
332  NLA_PUT_U8(msg, IFLA_MACSEC_ES, info->end_station);
333 
334  if ((info->ce_mask & MACSEC_ATTR_SCB))
335  NLA_PUT_U8(msg, IFLA_MACSEC_SCB, info->scb);
336 
337  if ((info->ce_mask & MACSEC_ATTR_PROTECT))
338  NLA_PUT_U8(msg, IFLA_MACSEC_PROTECT, info->protect);
339 
340  if ((info->ce_mask & MACSEC_ATTR_REPLAY_PROTECT)) {
341  if (info->replay_protect && !(info->ce_mask & MACSEC_ATTR_WINDOW))
342  return -NLE_INVAL;
343 
344  NLA_PUT_U8(msg, IFLA_MACSEC_REPLAY_PROTECT, info->replay_protect);
345  NLA_PUT_U32(msg, IFLA_MACSEC_WINDOW, info->window);
346  }
347 
348  if ((info->ce_mask & MACSEC_ATTR_VALIDATION))
349  NLA_PUT_U8(msg, IFLA_MACSEC_VALIDATION, info->validate);
350 
351  if ((info->ce_mask & MACSEC_ATTR_ENCODING_SA))
352  NLA_PUT_U8(msg, IFLA_MACSEC_ENCODING_SA, info->encoding_sa);
353 
354  nla_nest_end(msg, data);
355 
356  return 0;
357 
358 nla_put_failure:
359  return -NLE_MSGSIZE;
360 }
361 
362 static int macsec_compare(struct rtnl_link *link_a, struct rtnl_link *link_b,
363  int flags)
364 {
365  struct macsec_info *a = link_a->l_info;
366  struct macsec_info *b = link_b->l_info;
367  int diff = 0;
368  uint32_t attrs = flags & LOOSE_COMPARISON ? b->ce_mask : ~0;
369 
370 #define MACSEC_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, MACSEC_ATTR_##ATTR, a, b, EXPR)
371 
372  if (a->ce_mask & MACSEC_ATTR_SCI && b->ce_mask & MACSEC_ATTR_SCI)
373  diff |= MACSEC_DIFF(SCI, a->sci != b->sci);
374  else if (a->ce_mask & MACSEC_ATTR_PORT && b->ce_mask & MACSEC_ATTR_PORT)
375  diff |= MACSEC_DIFF(PORT, a->port != b->port);
376 
377  if (a->ce_mask & MACSEC_ATTR_CIPHER_SUITE && b->ce_mask & MACSEC_ATTR_CIPHER_SUITE) {
378  diff |= MACSEC_DIFF(ICV_LEN, a->icv_len != b->icv_len);
379  diff |= MACSEC_DIFF(CIPHER_SUITE, a->cipher_suite != b->cipher_suite);
380  }
381 
382  if (a->ce_mask & MACSEC_ATTR_REPLAY_PROTECT && b->ce_mask & MACSEC_ATTR_REPLAY_PROTECT) {
383  int d = MACSEC_DIFF(REPLAY_PROTECT, a->replay_protect != b->replay_protect);
384  if (a->replay_protect && b->replay_protect)
385  d |= MACSEC_DIFF(WINDOW, a->window != b->window);
386  diff |= d;
387  }
388 
389  diff |= MACSEC_DIFF(ENCODING_SA, a->encoding_sa != b->encoding_sa);
390  diff |= MACSEC_DIFF(ENCRYPT, a->encrypt != b->encrypt);
391  diff |= MACSEC_DIFF(PROTECT, a->protect != b->protect);
392  diff |= MACSEC_DIFF(INC_SCI, a->send_sci != b->send_sci);
393  diff |= MACSEC_DIFF(ES, a->end_station != b->end_station);
394  diff |= MACSEC_DIFF(SCB, a->scb != b->scb);
395  diff |= MACSEC_DIFF(VALIDATION, a->validate != b->validate);
396 #undef MACSEC_DIFF
397 
398  return diff;
399 }
400 
401 
402 static struct rtnl_link_info_ops macsec_info_ops = {
403  .io_name = "macsec",
404  .io_alloc = macsec_alloc,
405  .io_parse = macsec_parse,
406  .io_dump = {
407  [NL_DUMP_LINE] = macsec_dump_line,
408  [NL_DUMP_DETAILS] = macsec_dump_details,
409  },
410  .io_clone = macsec_clone,
411  .io_put_attrs = macsec_put_attrs,
412  .io_free = macsec_free,
413  .io_compare = macsec_compare,
414 };
415 
416 static void __init macsec_init(void)
417 {
418  rtnl_link_register_info(&macsec_info_ops);
419 }
420 
421 static void __exit macsec_exit(void)
422 {
423  rtnl_link_unregister_info(&macsec_info_ops);
424 }
425 
426 /** @cond SKIP */
427 #define IS_MACSEC_LINK_ASSERT(link) \
428  if ((link)->l_info_ops != &macsec_info_ops) { \
429  APPBUG("Link is not a MACsec link. set type \"macsec\" first."); \
430  return -NLE_OPNOTSUPP; \
431  }
432 /** @endcond */
433 
434 struct rtnl_link *rtnl_link_macsec_alloc(void)
435 {
436  struct rtnl_link *link = rtnl_link_alloc();
437 
438  if (!link)
439  return NULL;
440 
441  if (rtnl_link_set_type(link, "macsec") < 0) {
442  rtnl_link_put(link);
443  return NULL;
444  }
445 
446  return link;
447 }
448 
449 /**
450  * Set SCI
451  * @arg link Link object
452  * @arg sci Secure Channel Identifier in network byte order
453  *
454  * @return 0 on success or a negative error code.
455  */
456 int rtnl_link_macsec_set_sci(struct rtnl_link *link, uint64_t sci)
457 {
458  struct macsec_info *info = link->l_info;
459 
460  IS_MACSEC_LINK_ASSERT(link);
461 
462  info->sci = sci;
463  info->ce_mask |= MACSEC_ATTR_SCI;
464 
465  return 0;
466 }
467 
468 /**
469  * Get SCI
470  * @arg link Link object
471  * @arg sci On return points to the Secure Channel Identifier
472  * in network byte order
473  *
474  * @return 0 on success or a negative error code.
475  */
476 int rtnl_link_macsec_get_sci(struct rtnl_link *link, uint64_t *sci)
477 {
478  struct macsec_info *info = link->l_info;
479 
480  IS_MACSEC_LINK_ASSERT(link);
481 
482  if (!(info->ce_mask & MACSEC_ATTR_SCI))
483  return -NLE_NOATTR;
484 
485  if (sci)
486  *sci = info->sci;
487 
488  return 0;
489 }
490 
491 /**
492  * Set port identifier
493  * @arg link Link object
494  * @arg port Port identifier in host byte order
495  *
496  * @return 0 on success or a negative error code.
497  */
498 int rtnl_link_macsec_set_port(struct rtnl_link *link, uint16_t port)
499 {
500  struct macsec_info *info = link->l_info;
501 
502  IS_MACSEC_LINK_ASSERT(link);
503 
504  info->port = port;
505  info->ce_mask |= MACSEC_ATTR_PORT;
506 
507  return 0;
508 }
509 
510 /**
511  * Get port identifier
512  * @arg link Link object
513  * @arg port On return points to the port identifier in host byte order
514  *
515  * @return 0 on success or a negative error code.
516  */
517 int rtnl_link_macsec_get_port(struct rtnl_link *link, uint16_t *port)
518 {
519  struct macsec_info *info = link->l_info;
520 
521  IS_MACSEC_LINK_ASSERT(link);
522 
523  if (!(info->ce_mask & MACSEC_ATTR_PORT))
524  return -NLE_NOATTR;
525 
526  if (port)
527  *port = info->port;
528 
529  return 0;
530 }
531 
532 int rtnl_link_macsec_set_cipher_suite(struct rtnl_link *link, uint64_t cipher_suite)
533 {
534  struct macsec_info *info = link->l_info;
535 
536  IS_MACSEC_LINK_ASSERT(link);
537 
538  info->cipher_suite = cipher_suite;
539  info->ce_mask |= MACSEC_ATTR_CIPHER_SUITE;
540 
541  return 0;
542 }
543 
544 int rtnl_link_macsec_get_cipher_suite(struct rtnl_link *link, uint64_t *cs)
545 {
546  struct macsec_info *info = link->l_info;
547 
548  IS_MACSEC_LINK_ASSERT(link);
549 
550  if (!(info->ce_mask & MACSEC_ATTR_CIPHER_SUITE))
551  return -NLE_NOATTR;
552 
553  if (cs)
554  *cs = info->cipher_suite;
555 
556  return 0;
557 }
558 
559 int rtnl_link_macsec_set_icv_len(struct rtnl_link *link, uint16_t icv_len)
560 {
561  struct macsec_info *info = link->l_info;
562 
563  IS_MACSEC_LINK_ASSERT(link);
564 
565  if (icv_len > MACSEC_STD_ICV_LEN)
566  return -NLE_INVAL;
567 
568  info->icv_len = icv_len;
569  info->ce_mask |= MACSEC_ATTR_ICV_LEN;
570 
571  return 0;
572 }
573 
574 int rtnl_link_macsec_get_icv_len(struct rtnl_link *link, uint16_t *icv_len)
575 {
576  struct macsec_info *info = link->l_info;
577 
578  IS_MACSEC_LINK_ASSERT(link);
579 
580  if (!(info->ce_mask & MACSEC_ATTR_ICV_LEN))
581  return -NLE_NOATTR;
582 
583  if (icv_len)
584  *icv_len = info->icv_len;
585 
586  return 0;
587 }
588 
589 int rtnl_link_macsec_set_protect(struct rtnl_link *link, uint8_t protect)
590 {
591  struct macsec_info *info = link->l_info;
592 
593  IS_MACSEC_LINK_ASSERT(link);
594 
595  if (protect > 1)
596  return -NLE_INVAL;
597 
598  info->protect = protect;
599  info->ce_mask |= MACSEC_ATTR_PROTECT;
600 
601  return 0;
602 }
603 
604 int rtnl_link_macsec_get_protect(struct rtnl_link *link, uint8_t *protect)
605 {
606  struct macsec_info *info = link->l_info;
607 
608  IS_MACSEC_LINK_ASSERT(link);
609 
610  if (!(info->ce_mask & MACSEC_ATTR_PROTECT))
611  return -NLE_NOATTR;
612 
613  if (protect)
614  *protect = info->protect;
615 
616  return 0;
617 }
618 
619 int rtnl_link_macsec_set_encrypt(struct rtnl_link *link, uint8_t encrypt)
620 {
621  struct macsec_info *info = link->l_info;
622 
623  IS_MACSEC_LINK_ASSERT(link);
624 
625  if (encrypt > 1)
626  return -NLE_INVAL;
627 
628  info->encrypt = encrypt;
629  info->ce_mask |= MACSEC_ATTR_ENCRYPT;
630 
631  return 0;
632 }
633 
634 int rtnl_link_macsec_get_encrypt(struct rtnl_link *link, uint8_t *encrypt)
635 {
636  struct macsec_info *info = link->l_info;
637 
638  IS_MACSEC_LINK_ASSERT(link);
639 
640  if (!(info->ce_mask & MACSEC_ATTR_ENCRYPT))
641  return -NLE_NOATTR;
642 
643  if (encrypt)
644  *encrypt = info->encrypt;
645 
646  return 0;
647 }
648 
649 int rtnl_link_macsec_set_offload(struct rtnl_link *link, uint8_t offload)
650 {
651  struct macsec_info *info = link->l_info;
652 
653  IS_MACSEC_LINK_ASSERT(link);
654 
655  if (offload > 1)
656  return -NLE_INVAL;
657 
658  info->offload = offload;
659  info->ce_mask |= MACSEC_ATTR_OFFLOAD;
660 
661  return 0;
662 }
663 
664 int rtnl_link_macsec_get_offload(struct rtnl_link *link, uint8_t *offload)
665 {
666  struct macsec_info *info = link->l_info;
667 
668  IS_MACSEC_LINK_ASSERT(link);
669 
670  if (!(info->ce_mask & MACSEC_ATTR_OFFLOAD))
671  return -NLE_NOATTR;
672 
673  if (offload)
674  *offload = info->offload;
675 
676  return 0;
677 }
678 
679 int rtnl_link_macsec_set_encoding_sa(struct rtnl_link *link, uint8_t encoding_sa)
680 {
681  struct macsec_info *info = link->l_info;
682 
683  IS_MACSEC_LINK_ASSERT(link);
684 
685  if (encoding_sa > 3)
686  return -NLE_INVAL;
687 
688  info->encoding_sa = encoding_sa;
689  info->ce_mask |= MACSEC_ATTR_ENCODING_SA;
690 
691  return 0;
692 }
693 
694 int rtnl_link_macsec_get_encoding_sa(struct rtnl_link *link, uint8_t *encoding_sa)
695 {
696  struct macsec_info *info = link->l_info;
697 
698  IS_MACSEC_LINK_ASSERT(link);
699 
700  if (!(info->ce_mask & MACSEC_ATTR_ENCODING_SA))
701  return -NLE_NOATTR;
702 
703  if (encoding_sa)
704  *encoding_sa = info->encoding_sa;
705 
706  return 0;
707 }
708 
709 int rtnl_link_macsec_set_validation_type(struct rtnl_link *link, enum macsec_validation_type validate)
710 {
711  struct macsec_info *info = link->l_info;
712 
713  IS_MACSEC_LINK_ASSERT(link);
714 
715  if (validate > MACSEC_VALIDATE_MAX)
716  return -NLE_INVAL;
717 
718  info->validate = validate;
719  info->ce_mask |= MACSEC_ATTR_VALIDATION;
720 
721  return 0;
722 }
723 
724 int rtnl_link_macsec_get_validation_type(struct rtnl_link *link, enum macsec_validation_type *validate)
725 {
726  struct macsec_info *info = link->l_info;
727 
728  IS_MACSEC_LINK_ASSERT(link);
729 
730  if (!(info->ce_mask & MACSEC_ATTR_VALIDATION))
731  return -NLE_NOATTR;
732 
733  if (validate)
734  *validate = info->validate;
735 
736  return 0;
737 }
738 
739 int rtnl_link_macsec_set_replay_protect(struct rtnl_link *link, uint8_t replay_protect)
740 {
741  struct macsec_info *info = link->l_info;
742 
743  IS_MACSEC_LINK_ASSERT(link);
744 
745  if (replay_protect > 1)
746  return -NLE_INVAL;
747 
748  info->replay_protect = replay_protect;
749  info->ce_mask |= MACSEC_ATTR_REPLAY_PROTECT;
750 
751  return 0;
752 }
753 
754 int rtnl_link_macsec_get_replay_protect(struct rtnl_link *link, uint8_t *replay_protect)
755 {
756  struct macsec_info *info = link->l_info;
757 
758  IS_MACSEC_LINK_ASSERT(link);
759 
760  if (!(info->ce_mask & MACSEC_ATTR_REPLAY_PROTECT))
761  return -NLE_NOATTR;
762 
763  if (replay_protect)
764  *replay_protect = info->replay_protect;
765 
766  return 0;
767 }
768 
769 int rtnl_link_macsec_set_window(struct rtnl_link *link, uint32_t window)
770 {
771  struct macsec_info *info = link->l_info;
772 
773  IS_MACSEC_LINK_ASSERT(link);
774 
775  info->window = window;
776  info->ce_mask |= MACSEC_ATTR_WINDOW;
777 
778  return 0;
779 }
780 
781 int rtnl_link_macsec_get_window(struct rtnl_link *link, uint32_t *window)
782 {
783  struct macsec_info *info = link->l_info;
784 
785  IS_MACSEC_LINK_ASSERT(link);
786 
787  if (!(info->ce_mask & MACSEC_ATTR_WINDOW))
788  return -NLE_NOATTR;
789 
790  if (window)
791  *window = info->window;
792 
793  return 0;
794 }
795 
796 int rtnl_link_macsec_set_send_sci(struct rtnl_link *link, uint8_t send_sci)
797 {
798  struct macsec_info *info = link->l_info;
799 
800  IS_MACSEC_LINK_ASSERT(link);
801 
802  if (send_sci > 1)
803  return -NLE_INVAL;
804 
805  info->send_sci = send_sci;
806  info->ce_mask |= MACSEC_ATTR_INC_SCI;
807 
808  return 0;
809 }
810 
811 int rtnl_link_macsec_get_send_sci(struct rtnl_link *link, uint8_t *send_sci)
812 {
813  struct macsec_info *info = link->l_info;
814 
815  IS_MACSEC_LINK_ASSERT(link);
816 
817  if (!(info->ce_mask & MACSEC_ATTR_INC_SCI))
818  return -NLE_NOATTR;
819 
820  if (send_sci)
821  *send_sci = info->send_sci;
822 
823  return 0;
824 }
825 
826 int rtnl_link_macsec_set_end_station(struct rtnl_link *link, uint8_t end_station)
827 {
828  struct macsec_info *info = link->l_info;
829 
830  IS_MACSEC_LINK_ASSERT(link);
831 
832  if (end_station > 1)
833  return -NLE_INVAL;
834 
835  info->end_station = end_station;
836  info->ce_mask |= MACSEC_ATTR_ES;
837 
838  return 0;
839 }
840 
841 int rtnl_link_macsec_get_end_station(struct rtnl_link *link, uint8_t *es)
842 {
843  struct macsec_info *info = link->l_info;
844 
845  IS_MACSEC_LINK_ASSERT(link);
846 
847  if (!(info->ce_mask & MACSEC_ATTR_ES))
848  return -NLE_NOATTR;
849 
850  if (es)
851  *es = info->end_station;
852 
853  return 0;
854 }
855 
856 int rtnl_link_macsec_set_scb(struct rtnl_link *link, uint8_t scb)
857 {
858  struct macsec_info *info = link->l_info;
859 
860  IS_MACSEC_LINK_ASSERT(link);
861 
862  if (scb > 1)
863  return -NLE_INVAL;
864 
865  info->scb = scb;
866  info->ce_mask |= MACSEC_ATTR_SCB;
867 
868  return 0;
869 }
870 
871 int rtnl_link_macsec_get_scb(struct rtnl_link *link, uint8_t *scb)
872 {
873  struct macsec_info *info = link->l_info;
874 
875  IS_MACSEC_LINK_ASSERT(link);
876 
877  if (!(info->ce_mask & MACSEC_ATTR_SCB))
878  return -NLE_NOATTR;
879 
880  if (scb)
881  *scb = info->scb;
882 
883  return 0;
884 }
885 
886 /** @} */
887 
888 /** @} */
uint32_t nla_get_u32(const struct nlattr *nla)
Return payload of 32 bit integer attribute.
Definition: attr.c:699
#define NLA_PUT_U16(msg, attrtype, value)
Add 16 bit integer attribute to netlink message.
Definition: attr.h:212
#define NLA_PUT_U8(msg, attrtype, value)
Add 8 bit integer attribute to netlink message.
Definition: attr.h:194
uint64_t nla_get_u64(const struct nlattr *nla)
Return payload of u64 attribute.
Definition: attr.c:754
#define NLA_PUT_U32(msg, attrtype, value)
Add 32 bit integer attribute to netlink message.
Definition: attr.h:230
uint8_t nla_get_u8(const struct nlattr *nla)
Return value of 8 bit integer attribute.
Definition: attr.c:599
struct nlattr * nla_nest_start(struct nl_msg *msg, int attrtype)
Start a new level of nested attributes.
Definition: attr.c:895
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
#define NLA_PUT_U64(msg, attrtype, value)
Add 64 bit integer attribute to netlink message.
Definition: attr.h:248
int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
Finalize nesting of attributes.
Definition: attr.c:958
@ NLA_U64
64 bit integer
Definition: attr.h:38
@ NLA_U8
8 bit integer
Definition: attr.h:35
@ NLA_U32
32 bit integer
Definition: attr.h:37
int rtnl_link_macsec_set_sci(struct rtnl_link *link, uint64_t sci)
Set SCI.
Definition: macsec.c:456
int rtnl_link_macsec_get_sci(struct rtnl_link *link, uint64_t *sci)
Get SCI.
Definition: macsec.c:476
int rtnl_link_macsec_set_port(struct rtnl_link *link, uint16_t port)
Set port identifier.
Definition: macsec.c:498
int rtnl_link_macsec_get_port(struct rtnl_link *link, uint16_t *port)
Get port identifier.
Definition: macsec.c:517
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
Definition: utils.c:955
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
@ NL_DUMP_DETAILS
Dump all attributes but no statistics.
Definition: types.h:17
Dumping parameters.
Definition: types.h:28
Attribute validation policy.
Definition: attr.h:63
uint16_t type
Type of attribute or NLA_UNSPEC.
Definition: attr.h:65