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1 /*
2 * ipmacsec.c "ip macsec".
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: Sabrina Dubroca <sd@queasysnail.net>
10 */
11
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <errno.h>
16 #include <linux/genetlink.h>
17 #include <linux/if_ether.h>
18 #include <linux/if_macsec.h>
19
20 #include "rt_names.h"
21 #include "utils.h"
22 #include "ip_common.h"
23 #include "ll_map.h"
24 #include "libgenl.h"
25
26 static const char * const values_on_off[] = { "off", "on" };
27
28 static const char * const validate_str[] = {
29 [MACSEC_VALIDATE_DISABLED] = "disabled",
30 [MACSEC_VALIDATE_CHECK] = "check",
31 [MACSEC_VALIDATE_STRICT] = "strict",
32 };
33
34 struct sci {
35 __u64 sci;
36 __u16 port;
37 char abuf[6];
38 };
39
40 struct sa_desc {
41 __u8 an;
42 __u32 pn;
43 __u8 key_id[MACSEC_KEYID_LEN];
44 __u32 key_len;
45 __u8 key[MACSEC_MAX_KEY_LEN];
46 __u8 active;
47 };
48
49 struct cipher_args {
50 __u64 id;
51 __u8 icv_len;
52 };
53
54 struct txsc_desc {
55 int ifindex;
56 __u64 sci;
57 __be16 port;
58 struct cipher_args cipher;
59 __u32 window;
60 enum macsec_validation_type validate;
61 __u8 encoding_sa;
62 };
63
64 struct rxsc_desc {
65 int ifindex;
66 __u64 sci;
67 __u8 active;
68 };
69
70 #define MACSEC_BUFLEN 1024
71
72
73 /* netlink socket */
74 static struct rtnl_handle genl_rth;
75 static int genl_family = -1;
76
77 #define MACSEC_GENL_REQ(_req, _bufsiz, _cmd, _flags) \
78 GENL_REQUEST(_req, _bufsiz, genl_family, 0, MACSEC_GENL_VERSION, \
79 _cmd, _flags)
80
81
82 static void ipmacsec_usage(void)
83 {
84 fprintf(stderr,
85 "Usage: ip macsec add DEV tx sa { 0..3 } [ OPTS ] key ID KEY\n"
86 " ip macsec set DEV tx sa { 0..3 } [ OPTS ]\n"
87 " ip macsec del DEV tx sa { 0..3 }\n"
88 " ip macsec add DEV rx SCI [ on | off ]\n"
89 " ip macsec set DEV rx SCI [ on | off ]\n"
90 " ip macsec del DEV rx SCI\n"
91 " ip macsec add DEV rx SCI sa { 0..3 } [ OPTS ] key ID KEY\n"
92 " ip macsec set DEV rx SCI sa { 0..3 } [ OPTS ]\n"
93 " ip macsec del DEV rx SCI sa { 0..3 }\n"
94 " ip macsec show\n"
95 " ip macsec show DEV\n"
96 "where OPTS := [ pn <u32> ] [ on | off ]\n"
97 " ID := 128-bit hex string\n"
98 " KEY := 128-bit hex string\n"
99 " SCI := { sci <u64> | port { 1..2^16-1 } address <lladdr> }\n");
100
101 exit(-1);
102 }
103
104 static int one_of(const char *msg, const char *realval, const char * const *list,
105 size_t len, int *index)
106 {
107 int i;
108
109 for (i = 0; i < len; i++) {
110 if (matches(realval, list[i]) == 0) {
111 *index = i;
112 return 0;
113 }
114 }
115
116 fprintf(stderr, "Error: argument of \"%s\" must be one of ", msg);
117 for (i = 0; i < len; i++)
118 fprintf(stderr, "\"%s\", ", list[i]);
119 fprintf(stderr, "not \"%s\"\n", realval);
120 return -1;
121 }
122
123 static int get_an(__u8 *val, const char *arg)
124 {
125 int ret = get_u8(val, arg, 0);
126
127 if (ret)
128 return ret;
129
130 if (*val > 3)
131 return -1;
132
133 return 0;
134 }
135
136 static int get_sci(__u64 *sci, const char *arg)
137 {
138 return get_be64(sci, arg, 16);
139 }
140
141 static int get_port(__be16 *port, const char *arg)
142 {
143 return get_be16(port, arg, 0);
144 }
145
146 #define _STR(a) #a
147 #define STR(a) _STR(a)
148
149 static void get_icvlen(__u8 *icvlen, char *arg)
150 {
151 int ret = get_u8(icvlen, arg, 10);
152
153 if (ret)
154 invarg("expected ICV length", arg);
155
156 if (*icvlen < MACSEC_MIN_ICV_LEN || *icvlen > MACSEC_STD_ICV_LEN)
157 invarg("ICV length must be in the range {"
158 STR(MACSEC_MIN_ICV_LEN) ".." STR(MACSEC_STD_ICV_LEN)
159 "}", arg);
160 }
161
162 static bool get_sa(int *argcp, char ***argvp, __u8 *an)
163 {
164 int argc = *argcp;
165 char **argv = *argvp;
166 int ret;
167
168 if (argc <= 0 || strcmp(*argv, "sa") != 0)
169 return false;
170
171 NEXT_ARG();
172 ret = get_an(an, *argv);
173 if (ret)
174 invarg("expected an { 0..3 }", *argv);
175 argc--; argv++;
176
177 *argvp = argv;
178 *argcp = argc;
179 return true;
180 }
181
182 static int parse_sa_args(int *argcp, char ***argvp, struct sa_desc *sa)
183 {
184 int argc = *argcp;
185 char **argv = *argvp;
186 int ret;
187 bool active_set = false;
188
189 while (argc > 0) {
190 if (strcmp(*argv, "pn") == 0) {
191 if (sa->pn != 0)
192 duparg2("pn", "pn");
193 NEXT_ARG();
194 ret = get_u32(&sa->pn, *argv, 0);
195 if (ret)
196 invarg("expected pn", *argv);
197 if (sa->pn == 0)
198 invarg("expected pn != 0", *argv);
199 } else if (strcmp(*argv, "key") == 0) {
200 unsigned int len;
201
202 NEXT_ARG();
203 if (!hexstring_a2n(*argv, sa->key_id, MACSEC_KEYID_LEN,
204 &len))
205 invarg("expected key id", *argv);
206 NEXT_ARG();
207 if (!hexstring_a2n(*argv, sa->key, MACSEC_MAX_KEY_LEN,
208 &sa->key_len))
209 invarg("expected key", *argv);
210 } else if (strcmp(*argv, "on") == 0) {
211 if (active_set)
212 duparg2("on/off", "on");
213 sa->active = true;
214 active_set = true;
215 } else if (strcmp(*argv, "off") == 0) {
216 if (active_set)
217 duparg2("on/off", "off");
218 sa->active = false;
219 active_set = true;
220 } else {
221 fprintf(stderr, "macsec: unknown command \"%s\"?\n",
222 *argv);
223 ipmacsec_usage();
224 }
225
226 argv++; argc--;
227 }
228
229 *argvp = argv;
230 *argcp = argc;
231 return 0;
232 }
233
234 static __u64 make_sci(char *addr, __be16 port)
235 {
236 __u64 sci;
237
238 memcpy(&sci, addr, ETH_ALEN);
239 memcpy(((char *)&sci) + ETH_ALEN, &port, sizeof(port));
240
241 return sci;
242 }
243
244 static bool sci_complete(bool sci, bool port, bool addr, bool port_only)
245 {
246 return sci || (port && (addr || port_only));
247 }
248
249 static int get_sci_portaddr(struct sci *sci, int *argcp, char ***argvp,
250 bool port_only, bool optional)
251 {
252 int argc = *argcp;
253 char **argv = *argvp;
254 int ret;
255 bool p = false, a = false, s = false;
256
257 while (argc > 0) {
258 if (strcmp(*argv, "sci") == 0) {
259 if (p)
260 invarg("expected address", *argv);
261 if (a)
262 invarg("expected port", *argv);
263 NEXT_ARG();
264 ret = get_sci(&sci->sci, *argv);
265 if (ret)
266 invarg("expected sci", *argv);
267 s = true;
268 } else if (strcmp(*argv, "port") == 0) {
269 NEXT_ARG();
270 ret = get_port(&sci->port, *argv);
271 if (ret)
272 invarg("expected port", *argv);
273 if (sci->port == 0)
274 invarg("expected port != 0", *argv);
275 p = true;
276 } else if (strcmp(*argv, "address") == 0) {
277 NEXT_ARG();
278 ret = ll_addr_a2n(sci->abuf, sizeof(sci->abuf), *argv);
279 if (ret < 0)
280 invarg("expected lladdr", *argv);
281 a = true;
282 } else if (optional) {
283 break;
284 } else {
285 invarg("expected sci, port, or address", *argv);
286 }
287
288 argv++; argc--;
289
290 if (sci_complete(s, p, a, port_only))
291 break;
292 }
293
294 if (!optional && !sci_complete(s, p, a, port_only))
295 return -1;
296
297 if (p && a)
298 sci->sci = make_sci(sci->abuf, sci->port);
299
300 *argvp = argv;
301 *argcp = argc;
302
303 return p || a || s;
304 }
305
306 static bool parse_rxsci(int *argcp, char ***argvp, struct rxsc_desc *rxsc,
307 struct sa_desc *rxsa)
308 {
309 struct sci sci = { 0 };
310
311 if (*argcp == 0 ||
312 get_sci_portaddr(&sci, argcp, argvp, false, false) < 0) {
313 fprintf(stderr, "expected sci\n");
314 ipmacsec_usage();
315 }
316
317 rxsc->sci = sci.sci;
318
319 return get_sa(argcp, argvp, &rxsa->an);
320 }
321
322 static int parse_rxsci_args(int *argcp, char ***argvp, struct rxsc_desc *rxsc)
323 {
324 int argc = *argcp;
325 char **argv = *argvp;
326 bool active_set = false;
327
328 while (argc > 0) {
329 if (strcmp(*argv, "on") == 0) {
330 if (active_set)
331 duparg2("on/off", "on");
332 rxsc->active = true;
333 active_set = true;
334 } else if (strcmp(*argv, "off") == 0) {
335 if (active_set)
336 duparg2("on/off", "off");
337 rxsc->active = false;
338 active_set = true;
339 } else {
340 fprintf(stderr, "macsec: unknown command \"%s\"?\n",
341 *argv);
342 ipmacsec_usage();
343 }
344
345 argv++; argc--;
346 }
347
348 *argvp = argv;
349 *argcp = argc;
350 return 0;
351 }
352
353 enum cmd {
354 CMD_ADD,
355 CMD_DEL,
356 CMD_UPD,
357 __CMD_MAX
358 };
359
360 static const enum macsec_nl_commands macsec_commands[__CMD_MAX][2][2] = {
361 [CMD_ADD] = {
362 [0] = {-1, MACSEC_CMD_ADD_RXSC},
363 [1] = {MACSEC_CMD_ADD_TXSA, MACSEC_CMD_ADD_RXSA},
364 },
365 [CMD_UPD] = {
366 [0] = {-1, MACSEC_CMD_UPD_RXSC},
367 [1] = {MACSEC_CMD_UPD_TXSA, MACSEC_CMD_UPD_RXSA},
368 },
369 [CMD_DEL] = {
370 [0] = {-1, MACSEC_CMD_DEL_RXSC},
371 [1] = {MACSEC_CMD_DEL_TXSA, MACSEC_CMD_DEL_RXSA},
372 },
373 };
374
375 static int do_modify_nl(enum cmd c, enum macsec_nl_commands cmd, int ifindex,
376 struct rxsc_desc *rxsc, struct sa_desc *sa)
377 {
378 struct rtattr *attr_sa;
379
380 MACSEC_GENL_REQ(req, MACSEC_BUFLEN, cmd, NLM_F_REQUEST);
381
382 addattr32(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_IFINDEX, ifindex);
383 if (rxsc) {
384 struct rtattr *attr_rxsc;
385
386 attr_rxsc = addattr_nest(&req.n, MACSEC_BUFLEN,
387 MACSEC_ATTR_RXSC_CONFIG);
388 addattr64(&req.n, MACSEC_BUFLEN,
389 MACSEC_RXSC_ATTR_SCI, rxsc->sci);
390 if (c != CMD_DEL && rxsc->active != 0xff)
391 addattr8(&req.n, MACSEC_BUFLEN,
392 MACSEC_RXSC_ATTR_ACTIVE, rxsc->active);
393
394 addattr_nest_end(&req.n, attr_rxsc);
395 }
396
397 if (sa->an == 0xff)
398 goto talk;
399
400 attr_sa = addattr_nest(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_SA_CONFIG);
401
402 addattr8(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_AN, sa->an);
403
404 if (c != CMD_DEL) {
405 if (sa->pn)
406 addattr32(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_PN,
407 sa->pn);
408
409 if (sa->key_len) {
410 addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_KEYID,
411 sa->key_id, MACSEC_KEYID_LEN);
412 addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_KEY,
413 sa->key, sa->key_len);
414 }
415
416 if (sa->active != 0xff) {
417 addattr8(&req.n, MACSEC_BUFLEN,
418 MACSEC_SA_ATTR_ACTIVE, sa->active);
419 }
420 }
421
422 addattr_nest_end(&req.n, attr_sa);
423
424 talk:
425 if (rtnl_talk(&genl_rth, &req.n, NULL) < 0)
426 return -2;
427
428 return 0;
429 }
430
431 static bool check_sa_args(enum cmd c, struct sa_desc *sa)
432 {
433 if (c == CMD_ADD) {
434 if (!sa->key_len) {
435 fprintf(stderr, "cannot create SA without key\n");
436 return -1;
437 }
438
439 if (sa->pn == 0) {
440 fprintf(stderr, "must specify a packet number != 0\n");
441 return -1;
442 }
443 } else if (c == CMD_UPD) {
444 if (sa->key_len) {
445 fprintf(stderr, "cannot change key on SA\n");
446 return -1;
447 }
448 }
449
450 return 0;
451 }
452
453 static int do_modify_txsa(enum cmd c, int argc, char **argv, int ifindex)
454 {
455 struct sa_desc txsa = {0};
456 enum macsec_nl_commands cmd;
457
458 txsa.an = 0xff;
459 txsa.active = 0xff;
460
461 if (argc == 0 || !get_sa(&argc, &argv, &txsa.an))
462 ipmacsec_usage();
463
464 if (c == CMD_DEL)
465 goto modify;
466
467 if (parse_sa_args(&argc, &argv, &txsa))
468 return -1;
469
470 if (check_sa_args(c, &txsa))
471 return -1;
472
473 modify:
474 cmd = macsec_commands[c][1][0];
475 return do_modify_nl(c, cmd, ifindex, NULL, &txsa);
476 }
477
478 static int do_modify_rxsci(enum cmd c, int argc, char **argv, int ifindex)
479 {
480 struct rxsc_desc rxsc = {0};
481 struct sa_desc rxsa = {0};
482 bool sa_set;
483 enum macsec_nl_commands cmd;
484
485 rxsc.ifindex = ifindex;
486 rxsc.active = 0xff;
487 rxsa.an = 0xff;
488 rxsa.active = 0xff;
489
490 sa_set = parse_rxsci(&argc, &argv, &rxsc, &rxsa);
491
492 if (c == CMD_DEL)
493 goto modify;
494
495 if (sa_set && (parse_sa_args(&argc, &argv, &rxsa) ||
496 check_sa_args(c, &rxsa)))
497 return -1;
498 if (!sa_set && parse_rxsci_args(&argc, &argv, &rxsc))
499 return -1;
500
501 modify:
502 cmd = macsec_commands[c][sa_set][1];
503 return do_modify_nl(c, cmd, rxsc.ifindex, &rxsc, &rxsa);
504 }
505
506 static int do_modify(enum cmd c, int argc, char **argv)
507 {
508 int ifindex;
509
510 if (argc == 0)
511 ipmacsec_usage();
512
513 ifindex = ll_name_to_index(*argv);
514 if (!ifindex) {
515 fprintf(stderr, "Device \"%s\" does not exist.\n", *argv);
516 return -1;
517 }
518 argc--; argv++;
519
520 if (argc == 0)
521 ipmacsec_usage();
522
523 if (strcmp(*argv, "tx") == 0)
524 return do_modify_txsa(c, argc-1, argv+1, ifindex);
525 if (strcmp(*argv, "rx") == 0)
526 return do_modify_rxsci(c, argc-1, argv+1, ifindex);
527
528 ipmacsec_usage();
529 return -1;
530 }
531
532 /* dump/show */
533 static struct {
534 int ifindex;
535 __u64 sci;
536 } filter;
537
538 static int validate_dump(struct rtattr **attrs)
539 {
540 return attrs[MACSEC_ATTR_IFINDEX] && attrs[MACSEC_ATTR_SECY] &&
541 attrs[MACSEC_ATTR_TXSA_LIST] && attrs[MACSEC_ATTR_RXSC_LIST] &&
542 attrs[MACSEC_ATTR_TXSC_STATS] && attrs[MACSEC_ATTR_SECY_STATS];
543
544 }
545
546 static int validate_secy_dump(struct rtattr **attrs)
547 {
548 return attrs[MACSEC_SECY_ATTR_SCI] &&
549 attrs[MACSEC_SECY_ATTR_ENCODING_SA] &&
550 attrs[MACSEC_SECY_ATTR_CIPHER_SUITE] &&
551 attrs[MACSEC_SECY_ATTR_ICV_LEN] &&
552 attrs[MACSEC_SECY_ATTR_PROTECT] &&
553 attrs[MACSEC_SECY_ATTR_REPLAY] &&
554 attrs[MACSEC_SECY_ATTR_OPER] &&
555 attrs[MACSEC_SECY_ATTR_VALIDATE] &&
556 attrs[MACSEC_SECY_ATTR_ENCRYPT] &&
557 attrs[MACSEC_SECY_ATTR_INC_SCI] &&
558 attrs[MACSEC_SECY_ATTR_ES] &&
559 attrs[MACSEC_SECY_ATTR_SCB];
560 }
561
562 static void print_flag(struct rtattr *attrs[], const char *desc,
563 int field)
564 {
565 __u8 flag;
566
567 if (!attrs[field])
568 return;
569
570 flag = rta_getattr_u8(attrs[field]);
571 if (is_json_context())
572 print_bool(PRINT_JSON, desc, NULL, flag);
573 else {
574 print_string(PRINT_FP, NULL, "%s ", desc);
575 print_string(PRINT_FP, NULL, "%s ",
576 flag ? "on" : "off");
577 }
578 }
579
580 static void print_key(struct rtattr *key)
581 {
582 SPRINT_BUF(keyid);
583
584 print_string(PRINT_ANY, "key", " key %s\n",
585 hexstring_n2a(RTA_DATA(key), RTA_PAYLOAD(key),
586 keyid, sizeof(keyid)));
587 }
588
589 #define DEFAULT_CIPHER_NAME "GCM-AES-128"
590
591 static const char *cs_id_to_name(__u64 cid)
592 {
593 switch (cid) {
594 case MACSEC_DEFAULT_CIPHER_ID:
595 case MACSEC_DEFAULT_CIPHER_ALT:
596 return DEFAULT_CIPHER_NAME;
597 default:
598 return "(unknown)";
599 }
600 }
601
602 static void print_attrs(struct rtattr *attrs[])
603 {
604 print_flag(attrs, "protect", MACSEC_SECY_ATTR_PROTECT);
605
606 if (attrs[MACSEC_SECY_ATTR_VALIDATE]) {
607 __u8 val = rta_getattr_u8(attrs[MACSEC_SECY_ATTR_VALIDATE]);
608
609 print_string(PRINT_ANY, "validate",
610 "validate %s ", validate_str[val]);
611 }
612
613 print_flag(attrs, "sc", MACSEC_RXSC_ATTR_ACTIVE);
614 print_flag(attrs, "sa", MACSEC_SA_ATTR_ACTIVE);
615 print_flag(attrs, "encrypt", MACSEC_SECY_ATTR_ENCRYPT);
616 print_flag(attrs, "send_sci", MACSEC_SECY_ATTR_INC_SCI);
617 print_flag(attrs, "end_station", MACSEC_SECY_ATTR_ES);
618 print_flag(attrs, "scb", MACSEC_SECY_ATTR_SCB);
619 print_flag(attrs, "replay", MACSEC_SECY_ATTR_REPLAY);
620
621 if (attrs[MACSEC_SECY_ATTR_WINDOW]) {
622 __u32 win = rta_getattr_u32(attrs[MACSEC_SECY_ATTR_WINDOW]);
623
624 print_uint(PRINT_ANY, "window", "window %u ", win);
625 }
626
627 if (attrs[MACSEC_SECY_ATTR_CIPHER_SUITE]) {
628 __u64 cid = rta_getattr_u64(attrs[MACSEC_SECY_ATTR_CIPHER_SUITE]);
629
630 print_nl();
631 print_string(PRINT_ANY, "cipher_suite",
632 " cipher suite: %s,", cs_id_to_name(cid));
633 }
634
635 if (attrs[MACSEC_SECY_ATTR_ICV_LEN]) {
636 __u8 icv_len = rta_getattr_u8(attrs[MACSEC_SECY_ATTR_ICV_LEN]);
637
638 print_uint(PRINT_ANY, "icv_length",
639 " using ICV length %u\n", icv_len);
640 }
641 }
642
643 static __u64 getattr_u64(struct rtattr *stat)
644 {
645 switch (RTA_PAYLOAD(stat)) {
646 case sizeof(__u64):
647 return rta_getattr_u64(stat);
648 case sizeof(__u32):
649 return rta_getattr_u32(stat);
650 case sizeof(__u16):
651 return rta_getattr_u16(stat);
652 case sizeof(__u8):
653 return rta_getattr_u8(stat);
654 default:
655 fprintf(stderr, "invalid attribute length %lu\n",
656 RTA_PAYLOAD(stat));
657 exit(-1);
658 }
659 }
660
661 static void print_fp_stats(const char *prefix,
662 const char *names[], unsigned int num,
663 struct rtattr *stats[])
664 {
665 unsigned int i;
666 int pad;
667
668 printf("%sstats:", prefix);
669
670 for (i = 1; i < num; i++) {
671 if (!names[i])
672 continue;
673 printf(" %s", names[i]);
674 }
675
676 printf("\n%s ", prefix);
677
678 for (i = 1; i < num; i++) {
679 if (!names[i])
680 continue;
681
682 pad = strlen(names[i]) + 1;
683 if (stats[i])
684 printf("%*llu", pad, getattr_u64(stats[i]));
685 else
686 printf("%*c", pad, '-');
687 }
688 printf("\n");
689 }
690
691 static void print_json_stats(const char *names[], unsigned int num,
692 struct rtattr *stats[])
693 {
694 unsigned int i;
695
696 for (i = 1; i < num; i++) {
697 if (!names[i] || !stats[i])
698 continue;
699
700 print_u64(PRINT_JSON, names[i],
701 NULL, getattr_u64(stats[i]));
702 }
703 }
704
705 static void print_stats(const char *prefix,
706 const char *names[], unsigned int num,
707 struct rtattr *stats[])
708 {
709
710 if (is_json_context())
711 print_json_stats(names, num, stats);
712 else
713 print_fp_stats(prefix, names, num, stats);
714 }
715
716 static const char *txsc_stats_names[NUM_MACSEC_TXSC_STATS_ATTR] = {
717 [MACSEC_TXSC_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutPktsProtected",
718 [MACSEC_TXSC_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutPktsEncrypted",
719 [MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_PROTECTED] = "OutOctetsProtected",
720 [MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_ENCRYPTED] = "OutOctetsEncrypted",
721 };
722
723 static void print_txsc_stats(const char *prefix, struct rtattr *attr)
724 {
725 struct rtattr *stats[MACSEC_TXSC_STATS_ATTR_MAX + 1];
726
727 if (!attr || show_stats == 0)
728 return;
729
730 parse_rtattr_nested(stats, MACSEC_TXSC_STATS_ATTR_MAX, attr);
731
732 print_stats(prefix, txsc_stats_names, NUM_MACSEC_TXSC_STATS_ATTR,
733 stats);
734 }
735
736 static const char *secy_stats_names[NUM_MACSEC_SECY_STATS_ATTR] = {
737 [MACSEC_SECY_STATS_ATTR_OUT_PKTS_UNTAGGED] = "OutPktsUntagged",
738 [MACSEC_SECY_STATS_ATTR_IN_PKTS_UNTAGGED] = "InPktsUntagged",
739 [MACSEC_SECY_STATS_ATTR_OUT_PKTS_TOO_LONG] = "OutPktsTooLong",
740 [MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_TAG] = "InPktsNoTag",
741 [MACSEC_SECY_STATS_ATTR_IN_PKTS_BAD_TAG] = "InPktsBadTag",
742 [MACSEC_SECY_STATS_ATTR_IN_PKTS_UNKNOWN_SCI] = "InPktsUnknownSCI",
743 [MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_SCI] = "InPktsNoSCI",
744 [MACSEC_SECY_STATS_ATTR_IN_PKTS_OVERRUN] = "InPktsOverrun",
745 };
746
747 static void print_secy_stats(const char *prefix, struct rtattr *attr)
748 {
749 struct rtattr *stats[MACSEC_SECY_STATS_ATTR_MAX + 1];
750
751 if (!attr || show_stats == 0)
752 return;
753
754 parse_rtattr_nested(stats, MACSEC_SECY_STATS_ATTR_MAX, attr);
755
756 print_stats(prefix, secy_stats_names,
757 NUM_MACSEC_SECY_STATS_ATTR, stats);
758 }
759
760 static const char *rxsa_stats_names[NUM_MACSEC_SA_STATS_ATTR] = {
761 [MACSEC_SA_STATS_ATTR_IN_PKTS_OK] = "InPktsOK",
762 [MACSEC_SA_STATS_ATTR_IN_PKTS_INVALID] = "InPktsInvalid",
763 [MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_VALID] = "InPktsNotValid",
764 [MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_USING_SA] = "InPktsNotUsingSA",
765 [MACSEC_SA_STATS_ATTR_IN_PKTS_UNUSED_SA] = "InPktsUnusedSA",
766 };
767
768 static void print_rxsa_stats(const char *prefix, struct rtattr *attr)
769 {
770 struct rtattr *stats[MACSEC_SA_STATS_ATTR_MAX + 1];
771
772 if (!attr || show_stats == 0)
773 return;
774
775 parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX, attr);
776
777 print_stats(prefix, rxsa_stats_names, NUM_MACSEC_SA_STATS_ATTR, stats);
778 }
779
780 static const char *txsa_stats_names[NUM_MACSEC_SA_STATS_ATTR] = {
781 [MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutPktsProtected",
782 [MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutPktsEncrypted",
783 };
784
785 static void print_txsa_stats(const char *prefix, struct rtattr *attr)
786 {
787 struct rtattr *stats[MACSEC_SA_STATS_ATTR_MAX + 1];
788
789 if (!attr || show_stats == 0)
790 return;
791
792 parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX, attr);
793
794 print_stats(prefix, txsa_stats_names, NUM_MACSEC_SA_STATS_ATTR, stats);
795 }
796
797 static void print_tx_sc(const char *prefix, __u64 sci, __u8 encoding_sa,
798 struct rtattr *txsc_stats, struct rtattr *secy_stats,
799 struct rtattr *sa)
800 {
801 struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1];
802 struct rtattr *a;
803 int rem;
804
805 print_string(PRINT_FP, NULL, "%s", prefix);
806 print_0xhex(PRINT_ANY, "sci",
807 "TXSC: %016llx", ntohll(sci));
808 print_uint(PRINT_ANY, "encoding_sa",
809 " on SA %d\n", encoding_sa);
810
811 print_secy_stats(prefix, secy_stats);
812 print_txsc_stats(prefix, txsc_stats);
813
814 open_json_array(PRINT_JSON, "sa_list");
815 rem = RTA_PAYLOAD(sa);
816 for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) {
817 bool state;
818
819 open_json_object(NULL);
820 parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX, a);
821 state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]);
822
823 print_string(PRINT_FP, NULL, "%s", prefix);
824 print_string(PRINT_FP, NULL, "%s", prefix);
825 print_uint(PRINT_ANY, "an", "%d:",
826 rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]));
827 print_uint(PRINT_ANY, "pn", " PN %u,",
828 rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]));
829
830 print_bool(PRINT_JSON, "active", NULL, state);
831 print_string(PRINT_FP, NULL,
832 " state %s,", state ? "on" : "off");
833 print_key(sa_attr[MACSEC_SA_ATTR_KEYID]);
834
835 print_txsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]);
836 close_json_object();
837 }
838 close_json_array(PRINT_JSON, NULL);
839 }
840
841 static const char *rxsc_stats_names[NUM_MACSEC_RXSC_STATS_ATTR] = {
842 [MACSEC_RXSC_STATS_ATTR_IN_OCTETS_VALIDATED] = "InOctetsValidated",
843 [MACSEC_RXSC_STATS_ATTR_IN_OCTETS_DECRYPTED] = "InOctetsDecrypted",
844 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNCHECKED] = "InPktsUnchecked",
845 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_DELAYED] = "InPktsDelayed",
846 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_OK] = "InPktsOK",
847 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_INVALID] = "InPktsInvalid",
848 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_LATE] = "InPktsLate",
849 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_VALID] = "InPktsNotValid",
850 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_USING_SA] = "InPktsNotUsingSA",
851 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNUSED_SA] = "InPktsUnusedSA",
852 };
853
854 static void print_rxsc_stats(const char *prefix, struct rtattr *attr)
855 {
856 struct rtattr *stats[MACSEC_RXSC_STATS_ATTR_MAX + 1];
857
858 if (!attr || show_stats == 0)
859 return;
860
861 parse_rtattr_nested(stats, MACSEC_RXSC_STATS_ATTR_MAX, attr);
862
863 print_stats(prefix, rxsc_stats_names,
864 NUM_MACSEC_RXSC_STATS_ATTR, stats);
865 }
866
867 static void print_rx_sc(const char *prefix, __be64 sci, __u8 active,
868 struct rtattr *rxsc_stats, struct rtattr *sa)
869 {
870 struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1];
871 struct rtattr *a;
872 int rem;
873
874 print_string(PRINT_FP, NULL, "%s", prefix);
875 print_0xhex(PRINT_ANY, "sci",
876 "RXSC: %016llx,", ntohll(sci));
877 print_bool(PRINT_JSON, "active", NULL, active);
878 print_string(PRINT_FP, NULL,
879 " state %s\n", active ? "on" : "off");
880 print_rxsc_stats(prefix, rxsc_stats);
881
882 open_json_array(PRINT_JSON, "sa_list");
883 rem = RTA_PAYLOAD(sa);
884 for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) {
885 bool state;
886
887 open_json_object(NULL);
888 parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX, a);
889 state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]);
890
891 print_string(PRINT_FP, NULL, "%s", prefix);
892 print_string(PRINT_FP, NULL, "%s", prefix);
893 print_uint(PRINT_ANY, "an", "%u:",
894 rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]));
895 print_uint(PRINT_ANY, "pn", " PN %u,",
896 rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]));
897
898 print_bool(PRINT_JSON, "active", NULL, state);
899 print_string(PRINT_FP, NULL, " state %s,",
900 state ? "on" : "off");
901
902 print_key(sa_attr[MACSEC_SA_ATTR_KEYID]);
903
904 print_rxsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]);
905 close_json_object();
906 }
907 close_json_array(PRINT_JSON, NULL);
908 }
909
910 static void print_rxsc_list(struct rtattr *sc)
911 {
912 int rem = RTA_PAYLOAD(sc);
913 struct rtattr *c;
914
915 open_json_array(PRINT_JSON, "rx_sc");
916 for (c = RTA_DATA(sc); RTA_OK(c, rem); c = RTA_NEXT(c, rem)) {
917 struct rtattr *sc_attr[MACSEC_RXSC_ATTR_MAX + 1];
918
919 open_json_object(NULL);
920
921 parse_rtattr_nested(sc_attr, MACSEC_RXSC_ATTR_MAX, c);
922 print_rx_sc(" ",
923 rta_getattr_u64(sc_attr[MACSEC_RXSC_ATTR_SCI]),
924 rta_getattr_u32(sc_attr[MACSEC_RXSC_ATTR_ACTIVE]),
925 sc_attr[MACSEC_RXSC_ATTR_STATS],
926 sc_attr[MACSEC_RXSC_ATTR_SA_LIST]);
927 close_json_object();
928 }
929 close_json_array(PRINT_JSON, NULL);
930 }
931
932 static int process(struct nlmsghdr *n, void *arg)
933 {
934 struct genlmsghdr *ghdr;
935 struct rtattr *attrs[MACSEC_ATTR_MAX + 1];
936 struct rtattr *attrs_secy[MACSEC_SECY_ATTR_MAX + 1];
937 int len = n->nlmsg_len;
938 int ifindex;
939 __u64 sci;
940 __u8 encoding_sa;
941
942 if (n->nlmsg_type != genl_family)
943 return -1;
944
945 len -= NLMSG_LENGTH(GENL_HDRLEN);
946 if (len < 0)
947 return -1;
948
949 ghdr = NLMSG_DATA(n);
950 if (ghdr->cmd != MACSEC_CMD_GET_TXSC)
951 return 0;
952
953 parse_rtattr(attrs, MACSEC_ATTR_MAX, (void *) ghdr + GENL_HDRLEN, len);
954 if (!validate_dump(attrs)) {
955 fprintf(stderr, "incomplete dump message\n");
956 return -1;
957 }
958
959 ifindex = rta_getattr_u32(attrs[MACSEC_ATTR_IFINDEX]);
960 parse_rtattr_nested(attrs_secy, MACSEC_SECY_ATTR_MAX,
961 attrs[MACSEC_ATTR_SECY]);
962
963 if (!validate_secy_dump(attrs_secy)) {
964 fprintf(stderr, "incomplete dump message\n");
965 return -1;
966 }
967
968 sci = rta_getattr_u64(attrs_secy[MACSEC_SECY_ATTR_SCI]);
969 encoding_sa = rta_getattr_u8(attrs_secy[MACSEC_SECY_ATTR_ENCODING_SA]);
970
971 if (filter.ifindex && ifindex != filter.ifindex)
972 return 0;
973
974 if (filter.sci && sci != filter.sci)
975 return 0;
976
977 open_json_object(NULL);
978 print_uint(PRINT_ANY, "ifindex", "%u: ", ifindex);
979 print_color_string(PRINT_ANY, COLOR_IFNAME, "ifname",
980 "%s: ", ll_index_to_name(ifindex));
981
982 print_attrs(attrs_secy);
983
984 print_tx_sc(" ", sci, encoding_sa,
985 attrs[MACSEC_ATTR_TXSC_STATS],
986 attrs[MACSEC_ATTR_SECY_STATS],
987 attrs[MACSEC_ATTR_TXSA_LIST]);
988
989 if (attrs[MACSEC_ATTR_RXSC_LIST])
990 print_rxsc_list(attrs[MACSEC_ATTR_RXSC_LIST]);
991
992 close_json_object();
993
994 return 0;
995 }
996
997 static int do_dump(int ifindex)
998 {
999 MACSEC_GENL_REQ(req, MACSEC_BUFLEN, MACSEC_CMD_GET_TXSC,
1000 NLM_F_REQUEST | NLM_F_DUMP);
1001
1002 memset(&filter, 0, sizeof(filter));
1003 filter.ifindex = ifindex;
1004
1005 req.n.nlmsg_seq = genl_rth.dump = ++genl_rth.seq;
1006 if (rtnl_send(&genl_rth, &req, req.n.nlmsg_len) < 0) {
1007 perror("Failed to send dump request");
1008 exit(1);
1009 }
1010
1011 new_json_obj(json);
1012 if (rtnl_dump_filter(&genl_rth, process, stdout) < 0) {
1013 delete_json_obj();
1014 fprintf(stderr, "Dump terminated\n");
1015 exit(1);
1016 }
1017 delete_json_obj();
1018
1019 return 0;
1020 }
1021
1022 static int do_show(int argc, char **argv)
1023 {
1024 int ifindex;
1025
1026 if (argc == 0)
1027 return do_dump(0);
1028
1029 ifindex = ll_name_to_index(*argv);
1030 if (ifindex == 0) {
1031 fprintf(stderr, "Device \"%s\" does not exist.\n", *argv);
1032 return -1;
1033 }
1034
1035 argc--, argv++;
1036 if (argc == 0)
1037 return do_dump(ifindex);
1038
1039 ipmacsec_usage();
1040 return -1;
1041 }
1042
1043 int do_ipmacsec(int argc, char **argv)
1044 {
1045 if (argc < 1)
1046 ipmacsec_usage();
1047
1048 if (matches(*argv, "help") == 0)
1049 ipmacsec_usage();
1050
1051 if (genl_init_handle(&genl_rth, MACSEC_GENL_NAME, &genl_family))
1052 exit(1);
1053
1054 if (matches(*argv, "show") == 0)
1055 return do_show(argc-1, argv+1);
1056
1057 if (matches(*argv, "add") == 0)
1058 return do_modify(CMD_ADD, argc-1, argv+1);
1059 if (matches(*argv, "set") == 0)
1060 return do_modify(CMD_UPD, argc-1, argv+1);
1061 if (matches(*argv, "delete") == 0)
1062 return do_modify(CMD_DEL, argc-1, argv+1);
1063
1064 fprintf(stderr, "Command \"%s\" is unknown, try \"ip macsec help\".\n",
1065 *argv);
1066 exit(-1);
1067 }
1068
1069 /* device creation */
1070 static void macsec_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
1071 {
1072 if (!tb)
1073 return;
1074
1075 if (tb[IFLA_MACSEC_SCI]) {
1076 if (is_json_context()) {
1077 SPRINT_BUF(b1);
1078
1079 snprintf(b1, sizeof(b1), "%016llx",
1080 ntohll(rta_getattr_u64(tb[IFLA_MACSEC_SCI])));
1081 print_string(PRINT_JSON, "sci", NULL, b1);
1082 } else {
1083 fprintf(f, "sci %016llx ",
1084 ntohll(rta_getattr_u64(tb[IFLA_MACSEC_SCI])));
1085 }
1086 }
1087
1088 print_flag(tb, "protect", IFLA_MACSEC_PROTECT);
1089
1090 if (tb[IFLA_MACSEC_CIPHER_SUITE]) {
1091 __u64 csid
1092 = rta_getattr_u64(tb[IFLA_MACSEC_CIPHER_SUITE]);
1093
1094 print_string(PRINT_ANY,
1095 "cipher_suite",
1096 "cipher %s ",
1097 cs_id_to_name(csid));
1098 }
1099
1100 if (tb[IFLA_MACSEC_ICV_LEN]) {
1101 if (is_json_context()) {
1102 char b2[4];
1103
1104 snprintf(b2, sizeof(b2), "%hhu",
1105 rta_getattr_u8(tb[IFLA_MACSEC_ICV_LEN]));
1106 print_uint(PRINT_JSON, "icv_len", NULL, atoi(b2));
1107 } else {
1108 fprintf(f, "icvlen %hhu ",
1109 rta_getattr_u8(tb[IFLA_MACSEC_ICV_LEN]));
1110 }
1111 }
1112
1113 if (tb[IFLA_MACSEC_ENCODING_SA]) {
1114 if (is_json_context()) {
1115 char b2[4];
1116
1117 snprintf(b2, sizeof(b2), "%hhu",
1118 rta_getattr_u8(tb[IFLA_MACSEC_ENCODING_SA]));
1119 print_uint(PRINT_JSON, "encoding_sa", NULL, atoi(b2));
1120 } else {
1121 fprintf(f, "encodingsa %hhu ",
1122 rta_getattr_u8(tb[IFLA_MACSEC_ENCODING_SA]));
1123 }
1124 }
1125
1126 if (tb[IFLA_MACSEC_VALIDATION]) {
1127 __u8 val = rta_getattr_u8(tb[IFLA_MACSEC_VALIDATION]);
1128
1129 print_string(PRINT_ANY,
1130 "validation",
1131 "validate %s ",
1132 validate_str[val]);
1133 }
1134
1135 const char *inc_sci, *es, *replay;
1136
1137 if (is_json_context()) {
1138 inc_sci = "inc_sci";
1139 replay = "replay_protect";
1140 es = "es";
1141 } else {
1142 inc_sci = "send_sci";
1143 es = "end_station";
1144 replay = "replay";
1145 }
1146
1147 print_flag(tb, "encrypt", IFLA_MACSEC_ENCRYPT);
1148 print_flag(tb, inc_sci, IFLA_MACSEC_INC_SCI);
1149 print_flag(tb, es, IFLA_MACSEC_ES);
1150 print_flag(tb, "scb", IFLA_MACSEC_SCB);
1151 print_flag(tb, replay, IFLA_MACSEC_REPLAY_PROTECT);
1152
1153 if (tb[IFLA_MACSEC_WINDOW])
1154 print_int(PRINT_ANY,
1155 "window",
1156 "window %d ",
1157 rta_getattr_u32(tb[IFLA_MACSEC_WINDOW]));
1158 }
1159
1160 static bool check_txsc_flags(bool es, bool scb, bool sci)
1161 {
1162 if (sci && (es || scb))
1163 return false;
1164 if (es && scb)
1165 return false;
1166 return true;
1167 }
1168
1169 static void usage(FILE *f)
1170 {
1171 fprintf(f,
1172 "Usage: ... macsec [ [ address <lladdr> ] port { 1..2^16-1 } | sci <u64> ]\n"
1173 " [ cipher { default | gcm-aes-128 } ]\n"
1174 " [ icvlen { 8..16 } ]\n"
1175 " [ encrypt { on | off } ]\n"
1176 " [ send_sci { on | off } ]\n"
1177 " [ end_station { on | off } ]\n"
1178 " [ scb { on | off } ]\n"
1179 " [ protect { on | off } ]\n"
1180 " [ replay { on | off} window { 0..2^32-1 } ]\n"
1181 " [ validate { strict | check | disabled } ]\n"
1182 " [ encodingsa { 0..3 } ]\n"
1183 );
1184 }
1185
1186 static int macsec_parse_opt(struct link_util *lu, int argc, char **argv,
1187 struct nlmsghdr *n)
1188 {
1189 int ret;
1190 __u8 encoding_sa = 0xff;
1191 __u32 window = -1;
1192 struct cipher_args cipher = {0};
1193 enum macsec_validation_type validate;
1194 bool es = false, scb = false, send_sci = false;
1195 int replay_protect = -1;
1196 struct sci sci = { 0 };
1197
1198 ret = get_sci_portaddr(&sci, &argc, &argv, true, true);
1199 if (ret < 0) {
1200 fprintf(stderr, "expected sci\n");
1201 return -1;
1202 }
1203
1204 if (ret > 0) {
1205 if (sci.sci)
1206 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_SCI,
1207 &sci.sci, sizeof(sci.sci));
1208 else
1209 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_PORT,
1210 &sci.port, sizeof(sci.port));
1211 }
1212
1213 while (argc > 0) {
1214 if (strcmp(*argv, "cipher") == 0) {
1215 NEXT_ARG();
1216 if (cipher.id)
1217 duparg("cipher", *argv);
1218 if (strcmp(*argv, "default") == 0 ||
1219 strcmp(*argv, "gcm-aes-128") == 0 ||
1220 strcmp(*argv, "GCM-AES-128") == 0)
1221 cipher.id = MACSEC_DEFAULT_CIPHER_ID;
1222 else
1223 invarg("expected: default or gcm-aes-128",
1224 *argv);
1225 } else if (strcmp(*argv, "icvlen") == 0) {
1226 NEXT_ARG();
1227 if (cipher.icv_len)
1228 duparg("icvlen", *argv);
1229 get_icvlen(&cipher.icv_len, *argv);
1230 } else if (strcmp(*argv, "encrypt") == 0) {
1231 NEXT_ARG();
1232 int i;
1233
1234 ret = one_of("encrypt", *argv, values_on_off,
1235 ARRAY_SIZE(values_on_off), &i);
1236 if (ret != 0)
1237 return ret;
1238 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_ENCRYPT, i);
1239 } else if (strcmp(*argv, "send_sci") == 0) {
1240 NEXT_ARG();
1241 int i;
1242
1243 ret = one_of("send_sci", *argv, values_on_off,
1244 ARRAY_SIZE(values_on_off), &i);
1245 if (ret != 0)
1246 return ret;
1247 send_sci = i;
1248 addattr8(n, MACSEC_BUFLEN,
1249 IFLA_MACSEC_INC_SCI, send_sci);
1250 } else if (strcmp(*argv, "end_station") == 0) {
1251 NEXT_ARG();
1252 int i;
1253
1254 ret = one_of("end_station", *argv, values_on_off,
1255 ARRAY_SIZE(values_on_off), &i);
1256 if (ret != 0)
1257 return ret;
1258 es = i;
1259 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_ES, es);
1260 } else if (strcmp(*argv, "scb") == 0) {
1261 NEXT_ARG();
1262 int i;
1263
1264 ret = one_of("scb", *argv, values_on_off,
1265 ARRAY_SIZE(values_on_off), &i);
1266 if (ret != 0)
1267 return ret;
1268 scb = i;
1269 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_SCB, scb);
1270 } else if (strcmp(*argv, "protect") == 0) {
1271 NEXT_ARG();
1272 int i;
1273
1274 ret = one_of("protect", *argv, values_on_off,
1275 ARRAY_SIZE(values_on_off), &i);
1276 if (ret != 0)
1277 return ret;
1278 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_PROTECT, i);
1279 } else if (strcmp(*argv, "replay") == 0) {
1280 NEXT_ARG();
1281 int i;
1282
1283 ret = one_of("replay", *argv, values_on_off,
1284 ARRAY_SIZE(values_on_off), &i);
1285 if (ret != 0)
1286 return ret;
1287 replay_protect = !!i;
1288 } else if (strcmp(*argv, "window") == 0) {
1289 NEXT_ARG();
1290 ret = get_u32(&window, *argv, 0);
1291 if (ret)
1292 invarg("expected replay window size", *argv);
1293 } else if (strcmp(*argv, "validate") == 0) {
1294 NEXT_ARG();
1295 ret = one_of("validate", *argv,
1296 validate_str, ARRAY_SIZE(validate_str),
1297 (int *)&validate);
1298 if (ret != 0)
1299 return ret;
1300 addattr8(n, MACSEC_BUFLEN,
1301 IFLA_MACSEC_VALIDATION, validate);
1302 } else if (strcmp(*argv, "encodingsa") == 0) {
1303 if (encoding_sa != 0xff)
1304 duparg2("encodingsa", "encodingsa");
1305 NEXT_ARG();
1306 ret = get_an(&encoding_sa, *argv);
1307 if (ret)
1308 invarg("expected an { 0..3 }", *argv);
1309 } else {
1310 fprintf(stderr, "macsec: unknown command \"%s\"?\n",
1311 *argv);
1312 usage(stderr);
1313 return -1;
1314 }
1315
1316 argv++; argc--;
1317 }
1318
1319 if (!check_txsc_flags(es, scb, send_sci)) {
1320 fprintf(stderr,
1321 "invalid combination of send_sci/end_station/scb\n");
1322 return -1;
1323 }
1324
1325 if (window != -1 && replay_protect == -1) {
1326 fprintf(stderr,
1327 "replay window set, but replay protection not enabled. did you mean 'replay on window %u'?\n",
1328 window);
1329 return -1;
1330 } else if (window == -1 && replay_protect == 1) {
1331 fprintf(stderr,
1332 "replay protection enabled, but no window set. did you mean 'replay on window VALUE'?\n");
1333 return -1;
1334 }
1335
1336 if (cipher.id)
1337 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_CIPHER_SUITE,
1338 &cipher.id, sizeof(cipher.id));
1339 if (cipher.icv_len)
1340 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_ICV_LEN,
1341 &cipher.icv_len, sizeof(cipher.icv_len));
1342
1343 if (replay_protect != -1) {
1344 addattr32(n, MACSEC_BUFLEN, IFLA_MACSEC_WINDOW, window);
1345 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_REPLAY_PROTECT,
1346 replay_protect);
1347 }
1348
1349 if (encoding_sa != 0xff) {
1350 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_ENCODING_SA,
1351 &encoding_sa, sizeof(encoding_sa));
1352 }
1353
1354 return 0;
1355 }
1356
1357 static void macsec_print_help(struct link_util *lu, int argc, char **argv,
1358 FILE *f)
1359 {
1360 usage(f);
1361 }
1362
1363 struct link_util macsec_link_util = {
1364 .id = "macsec",
1365 .maxattr = IFLA_MACSEC_MAX,
1366 .parse_opt = macsec_parse_opt,
1367 .print_help = macsec_print_help,
1368 .print_opt = macsec_print_opt,
1369 };
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