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macsec: add support for changing the offloading mode
[mirror_iproute2.git] / ip / ipmacsec.c
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 static const char * const offload_str[] = {
35 [MACSEC_OFFLOAD_OFF] = "off",
36 [MACSEC_OFFLOAD_PHY] = "phy",
37 };
38
39 struct sci {
40 __u64 sci;
41 __u16 port;
42 char abuf[6];
43 };
44
45 struct sa_desc {
46 __u8 an;
47 __u32 pn;
48 __u8 key_id[MACSEC_KEYID_LEN];
49 __u32 key_len;
50 __u8 key[MACSEC_MAX_KEY_LEN];
51 __u8 active;
52 };
53
54 struct cipher_args {
55 __u64 id;
56 __u8 icv_len;
57 };
58
59 struct txsc_desc {
60 int ifindex;
61 __u64 sci;
62 __be16 port;
63 struct cipher_args cipher;
64 __u32 window;
65 enum macsec_validation_type validate;
66 __u8 encoding_sa;
67 };
68
69 struct rxsc_desc {
70 int ifindex;
71 __u64 sci;
72 __u8 active;
73 };
74
75 #define MACSEC_BUFLEN 1024
76
77
78 /* netlink socket */
79 static struct rtnl_handle genl_rth;
80 static int genl_family = -1;
81
82 #define MACSEC_GENL_REQ(_req, _bufsiz, _cmd, _flags) \
83 GENL_REQUEST(_req, _bufsiz, genl_family, 0, MACSEC_GENL_VERSION, \
84 _cmd, _flags)
85
86
87 static void ipmacsec_usage(void)
88 {
89 fprintf(stderr,
90 "Usage: ip macsec add DEV tx sa { 0..3 } [ OPTS ] key ID KEY\n"
91 " ip macsec set DEV tx sa { 0..3 } [ OPTS ]\n"
92 " ip macsec del DEV tx sa { 0..3 }\n"
93 " ip macsec add DEV rx SCI [ on | off ]\n"
94 " ip macsec set DEV rx SCI [ on | off ]\n"
95 " ip macsec del DEV rx SCI\n"
96 " ip macsec add DEV rx SCI sa { 0..3 } [ OPTS ] key ID KEY\n"
97 " ip macsec set DEV rx SCI sa { 0..3 } [ OPTS ]\n"
98 " ip macsec del DEV rx SCI sa { 0..3 }\n"
99 " ip macsec show\n"
100 " ip macsec show DEV\n"
101 " ip macsec offload DEV [ off | phy ]\n"
102 "where OPTS := [ pn <u32> ] [ on | off ]\n"
103 " ID := 128-bit hex string\n"
104 " KEY := 128-bit or 256-bit hex string\n"
105 " SCI := { sci <u64> | port { 1..2^16-1 } address <lladdr> }\n");
106
107 exit(-1);
108 }
109
110 static int one_of(const char *msg, const char *realval, const char * const *list,
111 size_t len, int *index)
112 {
113 int i;
114
115 for (i = 0; i < len; i++) {
116 if (matches(realval, list[i]) == 0) {
117 *index = i;
118 return 0;
119 }
120 }
121
122 fprintf(stderr, "Error: argument of \"%s\" must be one of ", msg);
123 for (i = 0; i < len; i++)
124 fprintf(stderr, "\"%s\", ", list[i]);
125 fprintf(stderr, "not \"%s\"\n", realval);
126 return -1;
127 }
128
129 static int get_an(__u8 *val, const char *arg)
130 {
131 int ret = get_u8(val, arg, 0);
132
133 if (ret)
134 return ret;
135
136 if (*val > 3)
137 return -1;
138
139 return 0;
140 }
141
142 static int get_sci(__u64 *sci, const char *arg)
143 {
144 return get_be64(sci, arg, 16);
145 }
146
147 static int get_port(__be16 *port, const char *arg)
148 {
149 return get_be16(port, arg, 0);
150 }
151
152 #define _STR(a) #a
153 #define STR(a) _STR(a)
154
155 static void get_icvlen(__u8 *icvlen, char *arg)
156 {
157 int ret = get_u8(icvlen, arg, 10);
158
159 if (ret)
160 invarg("expected ICV length", arg);
161
162 if (*icvlen < MACSEC_MIN_ICV_LEN || *icvlen > MACSEC_STD_ICV_LEN)
163 invarg("ICV length must be in the range {"
164 STR(MACSEC_MIN_ICV_LEN) ".." STR(MACSEC_STD_ICV_LEN)
165 "}", arg);
166 }
167
168 static bool get_sa(int *argcp, char ***argvp, __u8 *an)
169 {
170 int argc = *argcp;
171 char **argv = *argvp;
172 int ret;
173
174 if (argc <= 0 || strcmp(*argv, "sa") != 0)
175 return false;
176
177 NEXT_ARG();
178 ret = get_an(an, *argv);
179 if (ret)
180 invarg("expected an { 0..3 }", *argv);
181 argc--; argv++;
182
183 *argvp = argv;
184 *argcp = argc;
185 return true;
186 }
187
188 static int parse_sa_args(int *argcp, char ***argvp, struct sa_desc *sa)
189 {
190 int argc = *argcp;
191 char **argv = *argvp;
192 int ret;
193 bool active_set = false;
194
195 while (argc > 0) {
196 if (strcmp(*argv, "pn") == 0) {
197 if (sa->pn != 0)
198 duparg2("pn", "pn");
199 NEXT_ARG();
200 ret = get_u32(&sa->pn, *argv, 0);
201 if (ret)
202 invarg("expected pn", *argv);
203 if (sa->pn == 0)
204 invarg("expected pn != 0", *argv);
205 } else if (strcmp(*argv, "key") == 0) {
206 unsigned int len;
207
208 NEXT_ARG();
209 if (!hexstring_a2n(*argv, sa->key_id, MACSEC_KEYID_LEN,
210 &len))
211 invarg("expected key id", *argv);
212 NEXT_ARG();
213 if (!hexstring_a2n(*argv, sa->key, MACSEC_MAX_KEY_LEN,
214 &sa->key_len))
215 invarg("expected key", *argv);
216 } else if (strcmp(*argv, "on") == 0) {
217 if (active_set)
218 duparg2("on/off", "on");
219 sa->active = true;
220 active_set = true;
221 } else if (strcmp(*argv, "off") == 0) {
222 if (active_set)
223 duparg2("on/off", "off");
224 sa->active = false;
225 active_set = true;
226 } else {
227 fprintf(stderr, "macsec: unknown command \"%s\"?\n",
228 *argv);
229 ipmacsec_usage();
230 }
231
232 argv++; argc--;
233 }
234
235 *argvp = argv;
236 *argcp = argc;
237 return 0;
238 }
239
240 static __u64 make_sci(char *addr, __be16 port)
241 {
242 __u64 sci;
243
244 memcpy(&sci, addr, ETH_ALEN);
245 memcpy(((char *)&sci) + ETH_ALEN, &port, sizeof(port));
246
247 return sci;
248 }
249
250 static bool sci_complete(bool sci, bool port, bool addr, bool port_only)
251 {
252 return sci || (port && (addr || port_only));
253 }
254
255 static int get_sci_portaddr(struct sci *sci, int *argcp, char ***argvp,
256 bool port_only, bool optional)
257 {
258 int argc = *argcp;
259 char **argv = *argvp;
260 int ret;
261 bool p = false, a = false, s = false;
262
263 while (argc > 0) {
264 if (strcmp(*argv, "sci") == 0) {
265 if (p)
266 invarg("expected address", *argv);
267 if (a)
268 invarg("expected port", *argv);
269 NEXT_ARG();
270 ret = get_sci(&sci->sci, *argv);
271 if (ret)
272 invarg("expected sci", *argv);
273 s = true;
274 } else if (strcmp(*argv, "port") == 0) {
275 NEXT_ARG();
276 ret = get_port(&sci->port, *argv);
277 if (ret)
278 invarg("expected port", *argv);
279 if (sci->port == 0)
280 invarg("expected port != 0", *argv);
281 p = true;
282 } else if (strcmp(*argv, "address") == 0) {
283 NEXT_ARG();
284 ret = ll_addr_a2n(sci->abuf, sizeof(sci->abuf), *argv);
285 if (ret < 0)
286 invarg("expected lladdr", *argv);
287 a = true;
288 } else if (optional) {
289 break;
290 } else {
291 invarg("expected sci, port, or address", *argv);
292 }
293
294 argv++; argc--;
295
296 if (sci_complete(s, p, a, port_only))
297 break;
298 }
299
300 if (!optional && !sci_complete(s, p, a, port_only))
301 return -1;
302
303 if (p && a)
304 sci->sci = make_sci(sci->abuf, sci->port);
305
306 *argvp = argv;
307 *argcp = argc;
308
309 return p || a || s;
310 }
311
312 static bool parse_rxsci(int *argcp, char ***argvp, struct rxsc_desc *rxsc,
313 struct sa_desc *rxsa)
314 {
315 struct sci sci = { 0 };
316
317 if (*argcp == 0 ||
318 get_sci_portaddr(&sci, argcp, argvp, false, false) < 0) {
319 fprintf(stderr, "expected sci\n");
320 ipmacsec_usage();
321 }
322
323 rxsc->sci = sci.sci;
324
325 return get_sa(argcp, argvp, &rxsa->an);
326 }
327
328 static int parse_rxsci_args(int *argcp, char ***argvp, struct rxsc_desc *rxsc)
329 {
330 int argc = *argcp;
331 char **argv = *argvp;
332 bool active_set = false;
333
334 while (argc > 0) {
335 if (strcmp(*argv, "on") == 0) {
336 if (active_set)
337 duparg2("on/off", "on");
338 rxsc->active = true;
339 active_set = true;
340 } else if (strcmp(*argv, "off") == 0) {
341 if (active_set)
342 duparg2("on/off", "off");
343 rxsc->active = false;
344 active_set = true;
345 } else {
346 fprintf(stderr, "macsec: unknown command \"%s\"?\n",
347 *argv);
348 ipmacsec_usage();
349 }
350
351 argv++; argc--;
352 }
353
354 *argvp = argv;
355 *argcp = argc;
356 return 0;
357 }
358
359 enum cmd {
360 CMD_ADD,
361 CMD_DEL,
362 CMD_UPD,
363 CMD_OFFLOAD,
364 __CMD_MAX
365 };
366
367 static const enum macsec_nl_commands macsec_commands[__CMD_MAX][2][2] = {
368 [CMD_ADD] = {
369 [0] = {-1, MACSEC_CMD_ADD_RXSC},
370 [1] = {MACSEC_CMD_ADD_TXSA, MACSEC_CMD_ADD_RXSA},
371 },
372 [CMD_UPD] = {
373 [0] = {-1, MACSEC_CMD_UPD_RXSC},
374 [1] = {MACSEC_CMD_UPD_TXSA, MACSEC_CMD_UPD_RXSA},
375 },
376 [CMD_DEL] = {
377 [0] = {-1, MACSEC_CMD_DEL_RXSC},
378 [1] = {MACSEC_CMD_DEL_TXSA, MACSEC_CMD_DEL_RXSA},
379 },
380 [CMD_OFFLOAD] = {
381 [0] = {-1, MACSEC_CMD_UPD_OFFLOAD },
382 },
383 };
384
385 static int do_modify_nl(enum cmd c, enum macsec_nl_commands cmd, int ifindex,
386 struct rxsc_desc *rxsc, struct sa_desc *sa)
387 {
388 struct rtattr *attr_sa;
389
390 MACSEC_GENL_REQ(req, MACSEC_BUFLEN, cmd, NLM_F_REQUEST);
391
392 addattr32(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_IFINDEX, ifindex);
393 if (rxsc) {
394 struct rtattr *attr_rxsc;
395
396 attr_rxsc = addattr_nest(&req.n, MACSEC_BUFLEN,
397 MACSEC_ATTR_RXSC_CONFIG);
398 addattr64(&req.n, MACSEC_BUFLEN,
399 MACSEC_RXSC_ATTR_SCI, rxsc->sci);
400 if (c != CMD_DEL && rxsc->active != 0xff)
401 addattr8(&req.n, MACSEC_BUFLEN,
402 MACSEC_RXSC_ATTR_ACTIVE, rxsc->active);
403
404 addattr_nest_end(&req.n, attr_rxsc);
405 }
406
407 if (sa->an == 0xff)
408 goto talk;
409
410 attr_sa = addattr_nest(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_SA_CONFIG);
411
412 addattr8(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_AN, sa->an);
413
414 if (c != CMD_DEL) {
415 if (sa->pn)
416 addattr32(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_PN,
417 sa->pn);
418
419 if (sa->key_len) {
420 addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_KEYID,
421 sa->key_id, MACSEC_KEYID_LEN);
422 addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_KEY,
423 sa->key, sa->key_len);
424 }
425
426 if (sa->active != 0xff) {
427 addattr8(&req.n, MACSEC_BUFLEN,
428 MACSEC_SA_ATTR_ACTIVE, sa->active);
429 }
430 }
431
432 addattr_nest_end(&req.n, attr_sa);
433
434 talk:
435 if (rtnl_talk(&genl_rth, &req.n, NULL) < 0)
436 return -2;
437
438 return 0;
439 }
440
441 static bool check_sa_args(enum cmd c, struct sa_desc *sa)
442 {
443 if (c == CMD_ADD) {
444 if (!sa->key_len) {
445 fprintf(stderr, "cannot create SA without key\n");
446 return -1;
447 }
448
449 if (sa->pn == 0) {
450 fprintf(stderr, "must specify a packet number != 0\n");
451 return -1;
452 }
453 } else if (c == CMD_UPD) {
454 if (sa->key_len) {
455 fprintf(stderr, "cannot change key on SA\n");
456 return -1;
457 }
458 }
459
460 return 0;
461 }
462
463 static int do_modify_txsa(enum cmd c, int argc, char **argv, int ifindex)
464 {
465 struct sa_desc txsa = {0};
466 enum macsec_nl_commands cmd;
467
468 txsa.an = 0xff;
469 txsa.active = 0xff;
470
471 if (argc == 0 || !get_sa(&argc, &argv, &txsa.an))
472 ipmacsec_usage();
473
474 if (c == CMD_DEL)
475 goto modify;
476
477 if (parse_sa_args(&argc, &argv, &txsa))
478 return -1;
479
480 if (check_sa_args(c, &txsa))
481 return -1;
482
483 modify:
484 cmd = macsec_commands[c][1][0];
485 return do_modify_nl(c, cmd, ifindex, NULL, &txsa);
486 }
487
488 static int do_modify_rxsci(enum cmd c, int argc, char **argv, int ifindex)
489 {
490 struct rxsc_desc rxsc = {0};
491 struct sa_desc rxsa = {0};
492 bool sa_set;
493 enum macsec_nl_commands cmd;
494
495 rxsc.ifindex = ifindex;
496 rxsc.active = 0xff;
497 rxsa.an = 0xff;
498 rxsa.active = 0xff;
499
500 sa_set = parse_rxsci(&argc, &argv, &rxsc, &rxsa);
501
502 if (c == CMD_DEL)
503 goto modify;
504
505 if (sa_set && (parse_sa_args(&argc, &argv, &rxsa) ||
506 check_sa_args(c, &rxsa)))
507 return -1;
508 if (!sa_set && parse_rxsci_args(&argc, &argv, &rxsc))
509 return -1;
510
511 modify:
512 cmd = macsec_commands[c][sa_set][1];
513 return do_modify_nl(c, cmd, rxsc.ifindex, &rxsc, &rxsa);
514 }
515
516 static int do_modify(enum cmd c, int argc, char **argv)
517 {
518 int ifindex;
519
520 if (argc == 0)
521 ipmacsec_usage();
522
523 ifindex = ll_name_to_index(*argv);
524 if (!ifindex) {
525 fprintf(stderr, "Device \"%s\" does not exist.\n", *argv);
526 return -1;
527 }
528 argc--; argv++;
529
530 if (argc == 0)
531 ipmacsec_usage();
532
533 if (strcmp(*argv, "tx") == 0)
534 return do_modify_txsa(c, argc-1, argv+1, ifindex);
535 if (strcmp(*argv, "rx") == 0)
536 return do_modify_rxsci(c, argc-1, argv+1, ifindex);
537
538 ipmacsec_usage();
539 return -1;
540 }
541
542 static int do_offload(enum cmd c, int argc, char **argv)
543 {
544 enum macsec_offload offload;
545 struct rtattr *attr;
546 int ifindex, ret;
547
548 if (argc == 0)
549 ipmacsec_usage();
550
551 ifindex = ll_name_to_index(*argv);
552 if (!ifindex) {
553 fprintf(stderr, "Device \"%s\" does not exist.\n", *argv);
554 return -1;
555 }
556 argc--; argv++;
557
558 if (argc == 0)
559 ipmacsec_usage();
560
561 ret = one_of("offload", *argv, offload_str, ARRAY_SIZE(offload_str),
562 (int *)&offload);
563 if (ret)
564 ipmacsec_usage();
565
566 MACSEC_GENL_REQ(req, MACSEC_BUFLEN, macsec_commands[c][0][1], NLM_F_REQUEST);
567
568 addattr32(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_IFINDEX, ifindex);
569
570 attr = addattr_nest(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_OFFLOAD);
571 addattr8(&req.n, MACSEC_BUFLEN, MACSEC_OFFLOAD_ATTR_TYPE, offload);
572 addattr_nest_end(&req.n, attr);
573
574 if (rtnl_talk(&genl_rth, &req.n, NULL) < 0)
575 return -2;
576
577 return 0;
578 }
579
580 /* dump/show */
581 static struct {
582 int ifindex;
583 __u64 sci;
584 } filter;
585
586 static int validate_dump(struct rtattr **attrs)
587 {
588 return attrs[MACSEC_ATTR_IFINDEX] && attrs[MACSEC_ATTR_SECY] &&
589 attrs[MACSEC_ATTR_TXSA_LIST] && attrs[MACSEC_ATTR_RXSC_LIST] &&
590 attrs[MACSEC_ATTR_TXSC_STATS] && attrs[MACSEC_ATTR_SECY_STATS];
591
592 }
593
594 static int validate_secy_dump(struct rtattr **attrs)
595 {
596 return attrs[MACSEC_SECY_ATTR_SCI] &&
597 attrs[MACSEC_SECY_ATTR_ENCODING_SA] &&
598 attrs[MACSEC_SECY_ATTR_CIPHER_SUITE] &&
599 attrs[MACSEC_SECY_ATTR_ICV_LEN] &&
600 attrs[MACSEC_SECY_ATTR_PROTECT] &&
601 attrs[MACSEC_SECY_ATTR_REPLAY] &&
602 attrs[MACSEC_SECY_ATTR_OPER] &&
603 attrs[MACSEC_SECY_ATTR_VALIDATE] &&
604 attrs[MACSEC_SECY_ATTR_ENCRYPT] &&
605 attrs[MACSEC_SECY_ATTR_INC_SCI] &&
606 attrs[MACSEC_SECY_ATTR_ES] &&
607 attrs[MACSEC_SECY_ATTR_SCB];
608 }
609
610 static void print_flag(struct rtattr *attrs[], const char *desc,
611 int field)
612 {
613 __u8 flag;
614
615 if (!attrs[field])
616 return;
617
618 flag = rta_getattr_u8(attrs[field]);
619 if (is_json_context())
620 print_bool(PRINT_JSON, desc, NULL, flag);
621 else {
622 print_string(PRINT_FP, NULL, "%s ", desc);
623 print_string(PRINT_FP, NULL, "%s ",
624 flag ? "on" : "off");
625 }
626 }
627
628 static void print_key(struct rtattr *key)
629 {
630 SPRINT_BUF(keyid);
631
632 print_string(PRINT_ANY, "key", " key %s\n",
633 hexstring_n2a(RTA_DATA(key), RTA_PAYLOAD(key),
634 keyid, sizeof(keyid)));
635 }
636
637 #define CIPHER_NAME_GCM_AES_128 "GCM-AES-128"
638 #define CIPHER_NAME_GCM_AES_256 "GCM-AES-256"
639 #define DEFAULT_CIPHER_NAME CIPHER_NAME_GCM_AES_128
640
641 static const char *cs_id_to_name(__u64 cid)
642 {
643 switch (cid) {
644 case MACSEC_DEFAULT_CIPHER_ID:
645 return DEFAULT_CIPHER_NAME;
646 case MACSEC_CIPHER_ID_GCM_AES_128:
647 /* MACSEC_DEFAULT_CIPHER_ALT: */
648 return CIPHER_NAME_GCM_AES_128;
649 case MACSEC_CIPHER_ID_GCM_AES_256:
650 return CIPHER_NAME_GCM_AES_256;
651 default:
652 return "(unknown)";
653 }
654 }
655
656 static const char *offload_to_str(__u8 offload)
657 {
658 if (offload >= ARRAY_SIZE(offload_str))
659 return "(unknown)";
660
661 return offload_str[offload];
662 }
663
664 static void print_attrs(struct rtattr *attrs[])
665 {
666 print_flag(attrs, "protect", MACSEC_SECY_ATTR_PROTECT);
667
668 if (attrs[MACSEC_SECY_ATTR_VALIDATE]) {
669 __u8 val = rta_getattr_u8(attrs[MACSEC_SECY_ATTR_VALIDATE]);
670
671 print_string(PRINT_ANY, "validate",
672 "validate %s ", validate_str[val]);
673 }
674
675 print_flag(attrs, "sc", MACSEC_RXSC_ATTR_ACTIVE);
676 print_flag(attrs, "sa", MACSEC_SA_ATTR_ACTIVE);
677 print_flag(attrs, "encrypt", MACSEC_SECY_ATTR_ENCRYPT);
678 print_flag(attrs, "send_sci", MACSEC_SECY_ATTR_INC_SCI);
679 print_flag(attrs, "end_station", MACSEC_SECY_ATTR_ES);
680 print_flag(attrs, "scb", MACSEC_SECY_ATTR_SCB);
681 print_flag(attrs, "replay", MACSEC_SECY_ATTR_REPLAY);
682
683 if (attrs[MACSEC_SECY_ATTR_WINDOW]) {
684 __u32 win = rta_getattr_u32(attrs[MACSEC_SECY_ATTR_WINDOW]);
685
686 print_uint(PRINT_ANY, "window", "window %u ", win);
687 }
688
689 if (attrs[MACSEC_SECY_ATTR_CIPHER_SUITE]) {
690 __u64 cid = rta_getattr_u64(attrs[MACSEC_SECY_ATTR_CIPHER_SUITE]);
691
692 print_nl();
693 print_string(PRINT_ANY, "cipher_suite",
694 " cipher suite: %s,", cs_id_to_name(cid));
695 }
696
697 if (attrs[MACSEC_SECY_ATTR_ICV_LEN]) {
698 __u8 icv_len = rta_getattr_u8(attrs[MACSEC_SECY_ATTR_ICV_LEN]);
699
700 print_uint(PRINT_ANY, "icv_length",
701 " using ICV length %u\n", icv_len);
702 }
703 }
704
705 static __u64 getattr_u64(const struct rtattr *stat)
706 {
707 size_t len = RTA_PAYLOAD(stat);
708
709 switch (len) {
710 case sizeof(__u64):
711 return rta_getattr_u64(stat);
712 case sizeof(__u32):
713 return rta_getattr_u32(stat);
714 case sizeof(__u16):
715 return rta_getattr_u16(stat);
716 case sizeof(__u8):
717 return rta_getattr_u8(stat);
718 default:
719 fprintf(stderr, "invalid attribute length %zu\n",
720 len);
721 exit(-1);
722 }
723 }
724
725 static void print_fp_stats(const char *prefix,
726 const char *names[], unsigned int num,
727 struct rtattr *stats[])
728 {
729 unsigned int i;
730 int pad;
731
732 printf("%sstats:", prefix);
733
734 for (i = 1; i < num; i++) {
735 if (!names[i])
736 continue;
737 printf(" %s", names[i]);
738 }
739
740 printf("\n%s ", prefix);
741
742 for (i = 1; i < num; i++) {
743 if (!names[i])
744 continue;
745
746 pad = strlen(names[i]) + 1;
747 if (stats[i])
748 printf("%*llu", pad, getattr_u64(stats[i]));
749 else
750 printf("%*c", pad, '-');
751 }
752 printf("\n");
753 }
754
755 static void print_json_stats(const char *names[], unsigned int num,
756 struct rtattr *stats[])
757 {
758 unsigned int i;
759
760 for (i = 1; i < num; i++) {
761 if (!names[i] || !stats[i])
762 continue;
763
764 print_u64(PRINT_JSON, names[i],
765 NULL, getattr_u64(stats[i]));
766 }
767 }
768
769 static void print_stats(const char *prefix,
770 const char *names[], unsigned int num,
771 struct rtattr *stats[])
772 {
773
774 if (is_json_context())
775 print_json_stats(names, num, stats);
776 else
777 print_fp_stats(prefix, names, num, stats);
778 }
779
780 static const char *txsc_stats_names[NUM_MACSEC_TXSC_STATS_ATTR] = {
781 [MACSEC_TXSC_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutPktsProtected",
782 [MACSEC_TXSC_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutPktsEncrypted",
783 [MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_PROTECTED] = "OutOctetsProtected",
784 [MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_ENCRYPTED] = "OutOctetsEncrypted",
785 };
786
787 static void print_txsc_stats(const char *prefix, struct rtattr *attr)
788 {
789 struct rtattr *stats[MACSEC_TXSC_STATS_ATTR_MAX + 1];
790
791 if (!attr || show_stats == 0)
792 return;
793
794 parse_rtattr_nested(stats, MACSEC_TXSC_STATS_ATTR_MAX, attr);
795
796 print_stats(prefix, txsc_stats_names, NUM_MACSEC_TXSC_STATS_ATTR,
797 stats);
798 }
799
800 static const char *secy_stats_names[NUM_MACSEC_SECY_STATS_ATTR] = {
801 [MACSEC_SECY_STATS_ATTR_OUT_PKTS_UNTAGGED] = "OutPktsUntagged",
802 [MACSEC_SECY_STATS_ATTR_IN_PKTS_UNTAGGED] = "InPktsUntagged",
803 [MACSEC_SECY_STATS_ATTR_OUT_PKTS_TOO_LONG] = "OutPktsTooLong",
804 [MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_TAG] = "InPktsNoTag",
805 [MACSEC_SECY_STATS_ATTR_IN_PKTS_BAD_TAG] = "InPktsBadTag",
806 [MACSEC_SECY_STATS_ATTR_IN_PKTS_UNKNOWN_SCI] = "InPktsUnknownSCI",
807 [MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_SCI] = "InPktsNoSCI",
808 [MACSEC_SECY_STATS_ATTR_IN_PKTS_OVERRUN] = "InPktsOverrun",
809 };
810
811 static void print_secy_stats(const char *prefix, struct rtattr *attr)
812 {
813 struct rtattr *stats[MACSEC_SECY_STATS_ATTR_MAX + 1];
814
815 if (!attr || show_stats == 0)
816 return;
817
818 parse_rtattr_nested(stats, MACSEC_SECY_STATS_ATTR_MAX, attr);
819
820 print_stats(prefix, secy_stats_names,
821 NUM_MACSEC_SECY_STATS_ATTR, stats);
822 }
823
824 static const char *rxsa_stats_names[NUM_MACSEC_SA_STATS_ATTR] = {
825 [MACSEC_SA_STATS_ATTR_IN_PKTS_OK] = "InPktsOK",
826 [MACSEC_SA_STATS_ATTR_IN_PKTS_INVALID] = "InPktsInvalid",
827 [MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_VALID] = "InPktsNotValid",
828 [MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_USING_SA] = "InPktsNotUsingSA",
829 [MACSEC_SA_STATS_ATTR_IN_PKTS_UNUSED_SA] = "InPktsUnusedSA",
830 };
831
832 static void print_rxsa_stats(const char *prefix, struct rtattr *attr)
833 {
834 struct rtattr *stats[MACSEC_SA_STATS_ATTR_MAX + 1];
835
836 if (!attr || show_stats == 0)
837 return;
838
839 parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX, attr);
840
841 print_stats(prefix, rxsa_stats_names, NUM_MACSEC_SA_STATS_ATTR, stats);
842 }
843
844 static const char *txsa_stats_names[NUM_MACSEC_SA_STATS_ATTR] = {
845 [MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutPktsProtected",
846 [MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutPktsEncrypted",
847 };
848
849 static void print_txsa_stats(const char *prefix, struct rtattr *attr)
850 {
851 struct rtattr *stats[MACSEC_SA_STATS_ATTR_MAX + 1];
852
853 if (!attr || show_stats == 0)
854 return;
855
856 parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX, attr);
857
858 print_stats(prefix, txsa_stats_names, NUM_MACSEC_SA_STATS_ATTR, stats);
859 }
860
861 static void print_tx_sc(const char *prefix, __u64 sci, __u8 encoding_sa,
862 struct rtattr *txsc_stats, struct rtattr *secy_stats,
863 struct rtattr *sa)
864 {
865 struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1];
866 struct rtattr *a;
867 int rem;
868
869 print_string(PRINT_FP, NULL, "%s", prefix);
870 print_0xhex(PRINT_ANY, "sci",
871 "TXSC: %016llx", ntohll(sci));
872 print_uint(PRINT_ANY, "encoding_sa",
873 " on SA %d\n", encoding_sa);
874
875 print_secy_stats(prefix, secy_stats);
876 print_txsc_stats(prefix, txsc_stats);
877
878 open_json_array(PRINT_JSON, "sa_list");
879 rem = RTA_PAYLOAD(sa);
880 for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) {
881 bool state;
882
883 open_json_object(NULL);
884 parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX, a);
885 state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]);
886
887 print_string(PRINT_FP, NULL, "%s", prefix);
888 print_string(PRINT_FP, NULL, "%s", prefix);
889 print_uint(PRINT_ANY, "an", "%d:",
890 rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]));
891 print_uint(PRINT_ANY, "pn", " PN %u,",
892 rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]));
893
894 print_bool(PRINT_JSON, "active", NULL, state);
895 print_string(PRINT_FP, NULL,
896 " state %s,", state ? "on" : "off");
897 print_key(sa_attr[MACSEC_SA_ATTR_KEYID]);
898
899 print_txsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]);
900 close_json_object();
901 }
902 close_json_array(PRINT_JSON, NULL);
903 }
904
905 static const char *rxsc_stats_names[NUM_MACSEC_RXSC_STATS_ATTR] = {
906 [MACSEC_RXSC_STATS_ATTR_IN_OCTETS_VALIDATED] = "InOctetsValidated",
907 [MACSEC_RXSC_STATS_ATTR_IN_OCTETS_DECRYPTED] = "InOctetsDecrypted",
908 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNCHECKED] = "InPktsUnchecked",
909 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_DELAYED] = "InPktsDelayed",
910 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_OK] = "InPktsOK",
911 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_INVALID] = "InPktsInvalid",
912 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_LATE] = "InPktsLate",
913 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_VALID] = "InPktsNotValid",
914 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_USING_SA] = "InPktsNotUsingSA",
915 [MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNUSED_SA] = "InPktsUnusedSA",
916 };
917
918 static void print_rxsc_stats(const char *prefix, struct rtattr *attr)
919 {
920 struct rtattr *stats[MACSEC_RXSC_STATS_ATTR_MAX + 1];
921
922 if (!attr || show_stats == 0)
923 return;
924
925 parse_rtattr_nested(stats, MACSEC_RXSC_STATS_ATTR_MAX, attr);
926
927 print_stats(prefix, rxsc_stats_names,
928 NUM_MACSEC_RXSC_STATS_ATTR, stats);
929 }
930
931 static void print_rx_sc(const char *prefix, __be64 sci, __u8 active,
932 struct rtattr *rxsc_stats, struct rtattr *sa)
933 {
934 struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1];
935 struct rtattr *a;
936 int rem;
937
938 print_string(PRINT_FP, NULL, "%s", prefix);
939 print_0xhex(PRINT_ANY, "sci",
940 "RXSC: %016llx,", ntohll(sci));
941 print_bool(PRINT_JSON, "active", NULL, active);
942 print_string(PRINT_FP, NULL,
943 " state %s\n", active ? "on" : "off");
944 print_rxsc_stats(prefix, rxsc_stats);
945
946 open_json_array(PRINT_JSON, "sa_list");
947 rem = RTA_PAYLOAD(sa);
948 for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) {
949 bool state;
950
951 open_json_object(NULL);
952 parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX, a);
953 state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]);
954
955 print_string(PRINT_FP, NULL, "%s", prefix);
956 print_string(PRINT_FP, NULL, "%s", prefix);
957 print_uint(PRINT_ANY, "an", "%u:",
958 rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]));
959 print_uint(PRINT_ANY, "pn", " PN %u,",
960 rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]));
961
962 print_bool(PRINT_JSON, "active", NULL, state);
963 print_string(PRINT_FP, NULL, " state %s,",
964 state ? "on" : "off");
965
966 print_key(sa_attr[MACSEC_SA_ATTR_KEYID]);
967
968 print_rxsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]);
969 close_json_object();
970 }
971 close_json_array(PRINT_JSON, NULL);
972 }
973
974 static void print_rxsc_list(struct rtattr *sc)
975 {
976 int rem = RTA_PAYLOAD(sc);
977 struct rtattr *c;
978
979 open_json_array(PRINT_JSON, "rx_sc");
980 for (c = RTA_DATA(sc); RTA_OK(c, rem); c = RTA_NEXT(c, rem)) {
981 struct rtattr *sc_attr[MACSEC_RXSC_ATTR_MAX + 1];
982
983 open_json_object(NULL);
984
985 parse_rtattr_nested(sc_attr, MACSEC_RXSC_ATTR_MAX, c);
986 print_rx_sc(" ",
987 rta_getattr_u64(sc_attr[MACSEC_RXSC_ATTR_SCI]),
988 rta_getattr_u32(sc_attr[MACSEC_RXSC_ATTR_ACTIVE]),
989 sc_attr[MACSEC_RXSC_ATTR_STATS],
990 sc_attr[MACSEC_RXSC_ATTR_SA_LIST]);
991 close_json_object();
992 }
993 close_json_array(PRINT_JSON, NULL);
994 }
995
996 static int process(struct nlmsghdr *n, void *arg)
997 {
998 struct genlmsghdr *ghdr;
999 struct rtattr *attrs[MACSEC_ATTR_MAX + 1];
1000 struct rtattr *attrs_secy[MACSEC_SECY_ATTR_MAX + 1];
1001 int len = n->nlmsg_len;
1002 int ifindex;
1003 __u64 sci;
1004 __u8 encoding_sa;
1005
1006 if (n->nlmsg_type != genl_family)
1007 return -1;
1008
1009 len -= NLMSG_LENGTH(GENL_HDRLEN);
1010 if (len < 0)
1011 return -1;
1012
1013 ghdr = NLMSG_DATA(n);
1014 if (ghdr->cmd != MACSEC_CMD_GET_TXSC)
1015 return 0;
1016
1017 parse_rtattr(attrs, MACSEC_ATTR_MAX, (void *) ghdr + GENL_HDRLEN, len);
1018 if (!validate_dump(attrs)) {
1019 fprintf(stderr, "incomplete dump message\n");
1020 return -1;
1021 }
1022
1023 ifindex = rta_getattr_u32(attrs[MACSEC_ATTR_IFINDEX]);
1024 parse_rtattr_nested(attrs_secy, MACSEC_SECY_ATTR_MAX,
1025 attrs[MACSEC_ATTR_SECY]);
1026
1027 if (!validate_secy_dump(attrs_secy)) {
1028 fprintf(stderr, "incomplete dump message\n");
1029 return -1;
1030 }
1031
1032 sci = rta_getattr_u64(attrs_secy[MACSEC_SECY_ATTR_SCI]);
1033 encoding_sa = rta_getattr_u8(attrs_secy[MACSEC_SECY_ATTR_ENCODING_SA]);
1034
1035 if (filter.ifindex && ifindex != filter.ifindex)
1036 return 0;
1037
1038 if (filter.sci && sci != filter.sci)
1039 return 0;
1040
1041 open_json_object(NULL);
1042 print_uint(PRINT_ANY, "ifindex", "%u: ", ifindex);
1043 print_color_string(PRINT_ANY, COLOR_IFNAME, "ifname",
1044 "%s: ", ll_index_to_name(ifindex));
1045
1046 print_attrs(attrs_secy);
1047
1048 print_tx_sc(" ", sci, encoding_sa,
1049 attrs[MACSEC_ATTR_TXSC_STATS],
1050 attrs[MACSEC_ATTR_SECY_STATS],
1051 attrs[MACSEC_ATTR_TXSA_LIST]);
1052
1053 if (attrs[MACSEC_ATTR_RXSC_LIST])
1054 print_rxsc_list(attrs[MACSEC_ATTR_RXSC_LIST]);
1055
1056 if (attrs[MACSEC_ATTR_OFFLOAD]) {
1057 struct rtattr *attrs_offload[MACSEC_OFFLOAD_ATTR_MAX + 1];
1058 __u8 offload;
1059
1060 parse_rtattr_nested(attrs_offload, MACSEC_OFFLOAD_ATTR_MAX,
1061 attrs[MACSEC_ATTR_OFFLOAD]);
1062
1063 offload = rta_getattr_u8(attrs_offload[MACSEC_OFFLOAD_ATTR_TYPE]);
1064 print_string(PRINT_ANY, "offload",
1065 " offload: %s ", offload_to_str(offload));
1066 print_nl();
1067 }
1068
1069 close_json_object();
1070
1071 return 0;
1072 }
1073
1074 static int do_dump(int ifindex)
1075 {
1076 MACSEC_GENL_REQ(req, MACSEC_BUFLEN, MACSEC_CMD_GET_TXSC,
1077 NLM_F_REQUEST | NLM_F_DUMP);
1078
1079 memset(&filter, 0, sizeof(filter));
1080 filter.ifindex = ifindex;
1081
1082 req.n.nlmsg_seq = genl_rth.dump = ++genl_rth.seq;
1083 if (rtnl_send(&genl_rth, &req, req.n.nlmsg_len) < 0) {
1084 perror("Failed to send dump request");
1085 exit(1);
1086 }
1087
1088 new_json_obj(json);
1089 if (rtnl_dump_filter(&genl_rth, process, stdout) < 0) {
1090 delete_json_obj();
1091 fprintf(stderr, "Dump terminated\n");
1092 exit(1);
1093 }
1094 delete_json_obj();
1095
1096 return 0;
1097 }
1098
1099 static int do_show(int argc, char **argv)
1100 {
1101 int ifindex;
1102
1103 if (argc == 0)
1104 return do_dump(0);
1105
1106 ifindex = ll_name_to_index(*argv);
1107 if (ifindex == 0) {
1108 fprintf(stderr, "Device \"%s\" does not exist.\n", *argv);
1109 return -1;
1110 }
1111
1112 argc--, argv++;
1113 if (argc == 0)
1114 return do_dump(ifindex);
1115
1116 ipmacsec_usage();
1117 return -1;
1118 }
1119
1120 int do_ipmacsec(int argc, char **argv)
1121 {
1122 if (argc < 1)
1123 ipmacsec_usage();
1124
1125 if (matches(*argv, "help") == 0)
1126 ipmacsec_usage();
1127
1128 if (genl_init_handle(&genl_rth, MACSEC_GENL_NAME, &genl_family))
1129 exit(1);
1130
1131 if (matches(*argv, "show") == 0)
1132 return do_show(argc-1, argv+1);
1133
1134 if (matches(*argv, "add") == 0)
1135 return do_modify(CMD_ADD, argc-1, argv+1);
1136 if (matches(*argv, "set") == 0)
1137 return do_modify(CMD_UPD, argc-1, argv+1);
1138 if (matches(*argv, "delete") == 0)
1139 return do_modify(CMD_DEL, argc-1, argv+1);
1140 if (matches(*argv, "offload") == 0)
1141 return do_offload(CMD_OFFLOAD, argc-1, argv+1);
1142
1143 fprintf(stderr, "Command \"%s\" is unknown, try \"ip macsec help\".\n",
1144 *argv);
1145 exit(-1);
1146 }
1147
1148 /* device creation */
1149 static void macsec_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
1150 {
1151 if (!tb)
1152 return;
1153
1154 if (tb[IFLA_MACSEC_SCI]) {
1155 if (is_json_context()) {
1156 SPRINT_BUF(b1);
1157
1158 snprintf(b1, sizeof(b1), "%016llx",
1159 ntohll(rta_getattr_u64(tb[IFLA_MACSEC_SCI])));
1160 print_string(PRINT_JSON, "sci", NULL, b1);
1161 } else {
1162 fprintf(f, "sci %016llx ",
1163 ntohll(rta_getattr_u64(tb[IFLA_MACSEC_SCI])));
1164 }
1165 }
1166
1167 print_flag(tb, "protect", IFLA_MACSEC_PROTECT);
1168
1169 if (tb[IFLA_MACSEC_CIPHER_SUITE]) {
1170 __u64 csid
1171 = rta_getattr_u64(tb[IFLA_MACSEC_CIPHER_SUITE]);
1172
1173 print_string(PRINT_ANY,
1174 "cipher_suite",
1175 "cipher %s ",
1176 cs_id_to_name(csid));
1177 }
1178
1179 if (tb[IFLA_MACSEC_ICV_LEN]) {
1180 if (is_json_context()) {
1181 char b2[4];
1182
1183 snprintf(b2, sizeof(b2), "%hhu",
1184 rta_getattr_u8(tb[IFLA_MACSEC_ICV_LEN]));
1185 print_uint(PRINT_JSON, "icv_len", NULL, atoi(b2));
1186 } else {
1187 fprintf(f, "icvlen %hhu ",
1188 rta_getattr_u8(tb[IFLA_MACSEC_ICV_LEN]));
1189 }
1190 }
1191
1192 if (tb[IFLA_MACSEC_ENCODING_SA]) {
1193 if (is_json_context()) {
1194 char b2[4];
1195
1196 snprintf(b2, sizeof(b2), "%hhu",
1197 rta_getattr_u8(tb[IFLA_MACSEC_ENCODING_SA]));
1198 print_uint(PRINT_JSON, "encoding_sa", NULL, atoi(b2));
1199 } else {
1200 fprintf(f, "encodingsa %hhu ",
1201 rta_getattr_u8(tb[IFLA_MACSEC_ENCODING_SA]));
1202 }
1203 }
1204
1205 if (tb[IFLA_MACSEC_VALIDATION]) {
1206 __u8 val = rta_getattr_u8(tb[IFLA_MACSEC_VALIDATION]);
1207
1208 print_string(PRINT_ANY,
1209 "validation",
1210 "validate %s ",
1211 validate_str[val]);
1212 }
1213
1214 const char *inc_sci, *es, *replay;
1215
1216 if (is_json_context()) {
1217 inc_sci = "inc_sci";
1218 replay = "replay_protect";
1219 es = "es";
1220 } else {
1221 inc_sci = "send_sci";
1222 es = "end_station";
1223 replay = "replay";
1224 }
1225
1226 print_flag(tb, "encrypt", IFLA_MACSEC_ENCRYPT);
1227 print_flag(tb, inc_sci, IFLA_MACSEC_INC_SCI);
1228 print_flag(tb, es, IFLA_MACSEC_ES);
1229 print_flag(tb, "scb", IFLA_MACSEC_SCB);
1230 print_flag(tb, replay, IFLA_MACSEC_REPLAY_PROTECT);
1231
1232 if (tb[IFLA_MACSEC_WINDOW])
1233 print_int(PRINT_ANY,
1234 "window",
1235 "window %d ",
1236 rta_getattr_u32(tb[IFLA_MACSEC_WINDOW]));
1237 }
1238
1239 static bool check_txsc_flags(bool es, bool scb, bool sci)
1240 {
1241 if (sci && (es || scb))
1242 return false;
1243 if (es && scb)
1244 return false;
1245 return true;
1246 }
1247
1248 static void usage(FILE *f)
1249 {
1250 fprintf(f,
1251 "Usage: ... macsec [ [ address <lladdr> ] port { 1..2^16-1 } | sci <u64> ]\n"
1252 " [ cipher { default | gcm-aes-128 | gcm-aes-256 } ]\n"
1253 " [ icvlen { 8..16 } ]\n"
1254 " [ encrypt { on | off } ]\n"
1255 " [ send_sci { on | off } ]\n"
1256 " [ end_station { on | off } ]\n"
1257 " [ scb { on | off } ]\n"
1258 " [ protect { on | off } ]\n"
1259 " [ replay { on | off} window { 0..2^32-1 } ]\n"
1260 " [ validate { strict | check | disabled } ]\n"
1261 " [ encodingsa { 0..3 } ]\n"
1262 );
1263 }
1264
1265 static int macsec_parse_opt(struct link_util *lu, int argc, char **argv,
1266 struct nlmsghdr *n)
1267 {
1268 int ret;
1269 __u8 encoding_sa = 0xff;
1270 __u32 window = -1;
1271 struct cipher_args cipher = {0};
1272 enum macsec_validation_type validate;
1273 bool es = false, scb = false, send_sci = false;
1274 int replay_protect = -1;
1275 struct sci sci = { 0 };
1276
1277 ret = get_sci_portaddr(&sci, &argc, &argv, true, true);
1278 if (ret < 0) {
1279 fprintf(stderr, "expected sci\n");
1280 return -1;
1281 }
1282
1283 if (ret > 0) {
1284 if (sci.sci)
1285 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_SCI,
1286 &sci.sci, sizeof(sci.sci));
1287 else
1288 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_PORT,
1289 &sci.port, sizeof(sci.port));
1290 }
1291
1292 while (argc > 0) {
1293 if (strcmp(*argv, "cipher") == 0) {
1294 NEXT_ARG();
1295 if (cipher.id)
1296 duparg("cipher", *argv);
1297 if (strcmp(*argv, "default") == 0)
1298 cipher.id = MACSEC_DEFAULT_CIPHER_ID;
1299 else if (strcmp(*argv, "gcm-aes-128") == 0 ||
1300 strcmp(*argv, "GCM-AES-128") == 0)
1301 cipher.id = MACSEC_CIPHER_ID_GCM_AES_128;
1302 else if (strcmp(*argv, "gcm-aes-256") == 0 ||
1303 strcmp(*argv, "GCM-AES-256") == 0)
1304 cipher.id = MACSEC_CIPHER_ID_GCM_AES_256;
1305 else
1306 invarg("expected: default, gcm-aes-128 or"
1307 " gcm-aes-256", *argv);
1308 } else if (strcmp(*argv, "icvlen") == 0) {
1309 NEXT_ARG();
1310 if (cipher.icv_len)
1311 duparg("icvlen", *argv);
1312 get_icvlen(&cipher.icv_len, *argv);
1313 } else if (strcmp(*argv, "encrypt") == 0) {
1314 NEXT_ARG();
1315 int i;
1316
1317 ret = one_of("encrypt", *argv, values_on_off,
1318 ARRAY_SIZE(values_on_off), &i);
1319 if (ret != 0)
1320 return ret;
1321 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_ENCRYPT, i);
1322 } else if (strcmp(*argv, "send_sci") == 0) {
1323 NEXT_ARG();
1324 int i;
1325
1326 ret = one_of("send_sci", *argv, values_on_off,
1327 ARRAY_SIZE(values_on_off), &i);
1328 if (ret != 0)
1329 return ret;
1330 send_sci = i;
1331 addattr8(n, MACSEC_BUFLEN,
1332 IFLA_MACSEC_INC_SCI, send_sci);
1333 } else if (strcmp(*argv, "end_station") == 0) {
1334 NEXT_ARG();
1335 int i;
1336
1337 ret = one_of("end_station", *argv, values_on_off,
1338 ARRAY_SIZE(values_on_off), &i);
1339 if (ret != 0)
1340 return ret;
1341 es = i;
1342 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_ES, es);
1343 } else if (strcmp(*argv, "scb") == 0) {
1344 NEXT_ARG();
1345 int i;
1346
1347 ret = one_of("scb", *argv, values_on_off,
1348 ARRAY_SIZE(values_on_off), &i);
1349 if (ret != 0)
1350 return ret;
1351 scb = i;
1352 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_SCB, scb);
1353 } else if (strcmp(*argv, "protect") == 0) {
1354 NEXT_ARG();
1355 int i;
1356
1357 ret = one_of("protect", *argv, values_on_off,
1358 ARRAY_SIZE(values_on_off), &i);
1359 if (ret != 0)
1360 return ret;
1361 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_PROTECT, i);
1362 } else if (strcmp(*argv, "replay") == 0) {
1363 NEXT_ARG();
1364 int i;
1365
1366 ret = one_of("replay", *argv, values_on_off,
1367 ARRAY_SIZE(values_on_off), &i);
1368 if (ret != 0)
1369 return ret;
1370 replay_protect = !!i;
1371 } else if (strcmp(*argv, "window") == 0) {
1372 NEXT_ARG();
1373 ret = get_u32(&window, *argv, 0);
1374 if (ret)
1375 invarg("expected replay window size", *argv);
1376 } else if (strcmp(*argv, "validate") == 0) {
1377 NEXT_ARG();
1378 ret = one_of("validate", *argv,
1379 validate_str, ARRAY_SIZE(validate_str),
1380 (int *)&validate);
1381 if (ret != 0)
1382 return ret;
1383 addattr8(n, MACSEC_BUFLEN,
1384 IFLA_MACSEC_VALIDATION, validate);
1385 } else if (strcmp(*argv, "encodingsa") == 0) {
1386 if (encoding_sa != 0xff)
1387 duparg2("encodingsa", "encodingsa");
1388 NEXT_ARG();
1389 ret = get_an(&encoding_sa, *argv);
1390 if (ret)
1391 invarg("expected an { 0..3 }", *argv);
1392 } else {
1393 fprintf(stderr, "macsec: unknown command \"%s\"?\n",
1394 *argv);
1395 usage(stderr);
1396 return -1;
1397 }
1398
1399 argv++; argc--;
1400 }
1401
1402 if (!check_txsc_flags(es, scb, send_sci)) {
1403 fprintf(stderr,
1404 "invalid combination of send_sci/end_station/scb\n");
1405 return -1;
1406 }
1407
1408 if (window != -1 && replay_protect == -1) {
1409 fprintf(stderr,
1410 "replay window set, but replay protection not enabled. did you mean 'replay on window %u'?\n",
1411 window);
1412 return -1;
1413 } else if (window == -1 && replay_protect == 1) {
1414 fprintf(stderr,
1415 "replay protection enabled, but no window set. did you mean 'replay on window VALUE'?\n");
1416 return -1;
1417 }
1418
1419 if (cipher.id)
1420 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_CIPHER_SUITE,
1421 &cipher.id, sizeof(cipher.id));
1422 if (cipher.icv_len)
1423 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_ICV_LEN,
1424 &cipher.icv_len, sizeof(cipher.icv_len));
1425
1426 if (replay_protect != -1) {
1427 addattr32(n, MACSEC_BUFLEN, IFLA_MACSEC_WINDOW, window);
1428 addattr8(n, MACSEC_BUFLEN, IFLA_MACSEC_REPLAY_PROTECT,
1429 replay_protect);
1430 }
1431
1432 if (encoding_sa != 0xff) {
1433 addattr_l(n, MACSEC_BUFLEN, IFLA_MACSEC_ENCODING_SA,
1434 &encoding_sa, sizeof(encoding_sa));
1435 }
1436
1437 return 0;
1438 }
1439
1440 static void macsec_print_help(struct link_util *lu, int argc, char **argv,
1441 FILE *f)
1442 {
1443 usage(f);
1444 }
1445
1446 struct link_util macsec_link_util = {
1447 .id = "macsec",
1448 .maxattr = IFLA_MACSEC_MAX,
1449 .parse_opt = macsec_parse_opt,
1450 .print_help = macsec_print_help,
1451 .print_opt = macsec_print_opt,
1452 };
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