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b26fc590 SD |
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 *values_on_off[] = { "off", "on" }; | |
27 | ||
28 | static const char *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 | ||
b26fc590 SD |
82 | static void ipmacsec_usage(void) |
83 | { | |
84 | fprintf(stderr, "Usage: ip macsec add DEV tx sa { 0..3 } [ OPTS ] key ID KEY\n"); | |
85 | fprintf(stderr, " ip macsec set DEV tx sa { 0..3 } [ OPTS ]\n"); | |
86 | fprintf(stderr, " ip macsec del DEV tx sa { 0..3 }\n"); | |
87 | fprintf(stderr, " ip macsec add DEV rx SCI [ on | off ]\n"); | |
88 | fprintf(stderr, " ip macsec set DEV rx SCI [ on | off ]\n"); | |
89 | fprintf(stderr, " ip macsec del DEV rx SCI\n"); | |
90 | fprintf(stderr, " ip macsec add DEV rx SCI sa { 0..3 } [ OPTS ] key ID KEY\n"); | |
91 | fprintf(stderr, " ip macsec set DEV rx SCI sa { 0..3 } [ OPTS ]\n"); | |
92 | fprintf(stderr, " ip macsec del DEV rx SCI sa { 0..3 }\n"); | |
93 | fprintf(stderr, " ip macsec show\n"); | |
94 | fprintf(stderr, " ip macsec show DEV\n"); | |
95 | fprintf(stderr, "where OPTS := [ pn <u32> ] [ on | off ]\n"); | |
96 | fprintf(stderr, " ID := 128-bit hex string\n"); | |
97 | fprintf(stderr, " KEY := 128-bit hex string\n"); | |
5898bd66 | 98 | fprintf(stderr, " SCI := { sci <u64> | port { 1..2^16-1 } address <lladdr> }\n"); |
b26fc590 SD |
99 | |
100 | exit(-1); | |
101 | } | |
102 | ||
103 | static int one_of(const char *msg, const char *realval, const char **list, | |
104 | size_t len, int *index) | |
105 | { | |
106 | int i; | |
107 | ||
108 | for (i = 0; i < len; i++) { | |
109 | if (matches(realval, list[i]) == 0) { | |
110 | *index = i; | |
111 | return 0; | |
112 | } | |
113 | } | |
114 | ||
115 | fprintf(stderr, "Error: argument of \"%s\" must be one of ", msg); | |
116 | for (i = 0; i < len; i++) | |
117 | fprintf(stderr, "\"%s\", ", list[i]); | |
118 | fprintf(stderr, "not \"%s\"\n", realval); | |
119 | return -1; | |
120 | } | |
121 | ||
122 | static int get_an(__u8 *val, const char *arg) | |
123 | { | |
124 | int ret = get_u8(val, arg, 0); | |
125 | ||
126 | if (ret) | |
127 | return ret; | |
128 | ||
129 | if (*val > 3) | |
130 | return -1; | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
135 | static int get_sci(__u64 *sci, const char *arg) | |
136 | { | |
0330f49e | 137 | return get_be64(sci, arg, 16); |
b26fc590 SD |
138 | } |
139 | ||
140 | static int get_port(__be16 *port, const char *arg) | |
141 | { | |
5898bd66 | 142 | return get_be16(port, arg, 0); |
b26fc590 SD |
143 | } |
144 | ||
145 | #define _STR(a) #a | |
146 | #define STR(a) _STR(a) | |
147 | ||
148 | static void get_icvlen(__u8 *icvlen, char *arg) | |
149 | { | |
150 | int ret = get_u8(icvlen, arg, 10); | |
151 | ||
152 | if (ret) | |
153 | invarg("expected ICV length", arg); | |
154 | ||
f20f5f79 | 155 | if (*icvlen < MACSEC_MIN_ICV_LEN || *icvlen > MACSEC_STD_ICV_LEN) |
b26fc590 | 156 | invarg("ICV length must be in the range {" |
f20f5f79 | 157 | STR(MACSEC_MIN_ICV_LEN) ".." STR(MACSEC_STD_ICV_LEN) |
b26fc590 SD |
158 | "}", arg); |
159 | } | |
160 | ||
161 | static bool get_sa(int *argcp, char ***argvp, __u8 *an) | |
162 | { | |
163 | int argc = *argcp; | |
164 | char **argv = *argvp; | |
165 | int ret; | |
166 | ||
167 | if (argc <= 0 || strcmp(*argv, "sa") != 0) | |
168 | return false; | |
169 | ||
170 | NEXT_ARG(); | |
171 | ret = get_an(an, *argv); | |
172 | if (ret) | |
173 | invarg("expected an { 0..3 }", *argv); | |
174 | argc--; argv++; | |
175 | ||
176 | *argvp = argv; | |
177 | *argcp = argc; | |
178 | return true; | |
179 | } | |
180 | ||
181 | static int parse_sa_args(int *argcp, char ***argvp, struct sa_desc *sa) | |
182 | { | |
183 | int argc = *argcp; | |
184 | char **argv = *argvp; | |
185 | int ret; | |
186 | bool active_set = false; | |
187 | ||
188 | while (argc > 0) { | |
189 | if (strcmp(*argv, "pn") == 0) { | |
190 | if (sa->pn != 0) | |
191 | duparg2("pn", "pn"); | |
192 | NEXT_ARG(); | |
193 | ret = get_u32(&sa->pn, *argv, 0); | |
194 | if (ret) | |
195 | invarg("expected pn", *argv); | |
196 | if (sa->pn == 0) | |
197 | invarg("expected pn != 0", *argv); | |
198 | } else if (strcmp(*argv, "key") == 0) { | |
199 | unsigned int len; | |
200 | ||
201 | NEXT_ARG(); | |
202 | if (!hexstring_a2n(*argv, sa->key_id, MACSEC_KEYID_LEN, | |
203 | &len)) | |
204 | invarg("expected key id", *argv); | |
205 | NEXT_ARG(); | |
206 | if (!hexstring_a2n(*argv, sa->key, MACSEC_MAX_KEY_LEN, | |
207 | &sa->key_len)) | |
208 | invarg("expected key", *argv); | |
209 | } else if (strcmp(*argv, "on") == 0) { | |
210 | if (active_set) | |
211 | duparg2("on/off", "on"); | |
212 | sa->active = true; | |
213 | active_set = true; | |
214 | } else if (strcmp(*argv, "off") == 0) { | |
215 | if (active_set) | |
216 | duparg2("on/off", "off"); | |
217 | sa->active = false; | |
218 | active_set = true; | |
219 | } else { | |
220 | fprintf(stderr, "macsec: unknown command \"%s\"?\n", | |
221 | *argv); | |
222 | ipmacsec_usage(); | |
223 | } | |
224 | ||
225 | argv++; argc--; | |
226 | } | |
227 | ||
228 | *argvp = argv; | |
229 | *argcp = argc; | |
230 | return 0; | |
231 | } | |
232 | ||
233 | static __u64 make_sci(char *addr, __be16 port) | |
234 | { | |
235 | __u64 sci; | |
236 | ||
237 | memcpy(&sci, addr, ETH_ALEN); | |
238 | memcpy(((char *)&sci) + ETH_ALEN, &port, sizeof(port)); | |
239 | ||
240 | return sci; | |
241 | } | |
242 | ||
243 | static bool sci_complete(bool sci, bool port, bool addr, bool port_only) | |
244 | { | |
245 | return sci || (port && (addr || port_only)); | |
246 | } | |
247 | ||
248 | static int get_sci_portaddr(struct sci *sci, int *argcp, char ***argvp, | |
249 | bool port_only, bool optional) | |
250 | { | |
251 | int argc = *argcp; | |
252 | char **argv = *argvp; | |
253 | int ret; | |
254 | bool p = false, a = false, s = false; | |
255 | ||
256 | while (argc > 0) { | |
257 | if (strcmp(*argv, "sci") == 0) { | |
258 | if (p) | |
259 | invarg("expected address", *argv); | |
260 | if (a) | |
261 | invarg("expected port", *argv); | |
262 | NEXT_ARG(); | |
263 | ret = get_sci(&sci->sci, *argv); | |
264 | if (ret) | |
265 | invarg("expected sci", *argv); | |
266 | s = true; | |
267 | } else if (strcmp(*argv, "port") == 0) { | |
268 | NEXT_ARG(); | |
269 | ret = get_port(&sci->port, *argv); | |
270 | if (ret) | |
271 | invarg("expected port", *argv); | |
272 | if (sci->port == 0) | |
273 | invarg("expected port != 0", *argv); | |
274 | p = true; | |
275 | } else if (strcmp(*argv, "address") == 0) { | |
276 | NEXT_ARG(); | |
277 | ret = ll_addr_a2n(sci->abuf, sizeof(sci->abuf), *argv); | |
278 | if (ret < 0) | |
279 | invarg("expected lladdr", *argv); | |
280 | a = true; | |
281 | } else if (optional) { | |
282 | break; | |
283 | } else { | |
284 | invarg("expected sci, port, or address", *argv); | |
285 | } | |
286 | ||
287 | argv++; argc--; | |
288 | ||
289 | if (sci_complete(s, p, a, port_only)) | |
290 | break; | |
291 | } | |
292 | ||
293 | if (!optional && !sci_complete(s, p, a, port_only)) | |
294 | return -1; | |
295 | ||
296 | if (p && a) | |
297 | sci->sci = make_sci(sci->abuf, sci->port); | |
298 | ||
299 | *argvp = argv; | |
300 | *argcp = argc; | |
301 | ||
302 | return p || a || s; | |
303 | } | |
304 | ||
305 | static bool parse_rxsci(int *argcp, char ***argvp, struct rxsc_desc *rxsc, | |
306 | struct sa_desc *rxsa) | |
307 | { | |
308 | struct sci sci = { 0 }; | |
309 | ||
310 | if (*argcp == 0 || | |
311 | get_sci_portaddr(&sci, argcp, argvp, false, false) < 0) { | |
312 | fprintf(stderr, "expected sci\n"); | |
313 | ipmacsec_usage(); | |
314 | } | |
315 | ||
316 | rxsc->sci = sci.sci; | |
317 | ||
318 | return get_sa(argcp, argvp, &rxsa->an); | |
319 | } | |
320 | ||
321 | static int parse_rxsci_args(int *argcp, char ***argvp, struct rxsc_desc *rxsc) | |
322 | { | |
323 | int argc = *argcp; | |
324 | char **argv = *argvp; | |
325 | bool active_set = false; | |
326 | ||
327 | while (argc > 0) { | |
328 | if (strcmp(*argv, "on") == 0) { | |
329 | if (active_set) | |
330 | duparg2("on/off", "on"); | |
331 | rxsc->active = true; | |
332 | active_set = true; | |
333 | } else if (strcmp(*argv, "off") == 0) { | |
334 | if (active_set) | |
335 | duparg2("on/off", "off"); | |
336 | rxsc->active = false; | |
337 | active_set = true; | |
338 | } else { | |
339 | fprintf(stderr, "macsec: unknown command \"%s\"?\n", | |
340 | *argv); | |
341 | ipmacsec_usage(); | |
342 | } | |
343 | ||
344 | argv++; argc--; | |
345 | } | |
346 | ||
347 | *argvp = argv; | |
348 | *argcp = argc; | |
349 | return 0; | |
350 | } | |
351 | ||
352 | enum cmd { | |
353 | CMD_ADD, | |
354 | CMD_DEL, | |
355 | CMD_UPD, | |
356 | __CMD_MAX | |
357 | }; | |
358 | ||
359 | static const enum macsec_nl_commands macsec_commands[__CMD_MAX][2][2] = { | |
360 | [CMD_ADD] = { | |
361 | [0] = {-1, MACSEC_CMD_ADD_RXSC}, | |
362 | [1] = {MACSEC_CMD_ADD_TXSA, MACSEC_CMD_ADD_RXSA}, | |
363 | }, | |
364 | [CMD_UPD] = { | |
365 | [0] = {-1, MACSEC_CMD_UPD_RXSC}, | |
366 | [1] = {MACSEC_CMD_UPD_TXSA, MACSEC_CMD_UPD_RXSA}, | |
367 | }, | |
368 | [CMD_DEL] = { | |
369 | [0] = {-1, MACSEC_CMD_DEL_RXSC}, | |
370 | [1] = {MACSEC_CMD_DEL_TXSA, MACSEC_CMD_DEL_RXSA}, | |
371 | }, | |
372 | }; | |
373 | ||
374 | static int do_modify_nl(enum cmd c, enum macsec_nl_commands cmd, int ifindex, | |
375 | struct rxsc_desc *rxsc, struct sa_desc *sa) | |
376 | { | |
377 | struct rtattr *attr_sa; | |
378 | ||
379 | MACSEC_GENL_REQ(req, MACSEC_BUFLEN, cmd, NLM_F_REQUEST); | |
380 | ||
381 | addattr32(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_IFINDEX, ifindex); | |
382 | if (rxsc) { | |
383 | struct rtattr *attr_rxsc; | |
384 | ||
385 | attr_rxsc = addattr_nest(&req.n, MACSEC_BUFLEN, | |
386 | MACSEC_ATTR_RXSC_CONFIG); | |
387 | addattr64(&req.n, MACSEC_BUFLEN, | |
388 | MACSEC_RXSC_ATTR_SCI, rxsc->sci); | |
389 | if (c != CMD_DEL && rxsc->active != 0xff) | |
390 | addattr8(&req.n, MACSEC_BUFLEN, | |
391 | MACSEC_RXSC_ATTR_ACTIVE, rxsc->active); | |
392 | ||
393 | addattr_nest_end(&req.n, attr_rxsc); | |
394 | } | |
395 | ||
396 | if (sa->an == 0xff) | |
397 | goto talk; | |
398 | ||
399 | attr_sa = addattr_nest(&req.n, MACSEC_BUFLEN, MACSEC_ATTR_SA_CONFIG); | |
400 | ||
401 | addattr8(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_AN, sa->an); | |
402 | ||
403 | if (c != CMD_DEL) { | |
404 | if (sa->pn) | |
405 | addattr32(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_PN, | |
406 | sa->pn); | |
407 | ||
408 | if (sa->key_len) { | |
409 | addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_KEYID, | |
410 | sa->key_id, MACSEC_KEYID_LEN); | |
411 | addattr_l(&req.n, MACSEC_BUFLEN, MACSEC_SA_ATTR_KEY, | |
412 | sa->key, sa->key_len); | |
413 | } | |
414 | ||
415 | if (sa->active != 0xff) { | |
416 | addattr8(&req.n, MACSEC_BUFLEN, | |
417 | MACSEC_SA_ATTR_ACTIVE, sa->active); | |
418 | } | |
419 | } | |
420 | ||
421 | addattr_nest_end(&req.n, attr_sa); | |
422 | ||
423 | talk: | |
424 | if (rtnl_talk(&genl_rth, &req.n, NULL, 0) < 0) | |
425 | return -2; | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
430 | static bool check_sa_args(enum cmd c, struct sa_desc *sa) | |
431 | { | |
432 | if (c == CMD_ADD) { | |
433 | if (!sa->key_len) { | |
434 | fprintf(stderr, "cannot create SA without key\n"); | |
435 | return -1; | |
436 | } | |
437 | ||
438 | if (sa->pn == 0) { | |
439 | fprintf(stderr, "must specify a packet number != 0\n"); | |
440 | return -1; | |
441 | } | |
442 | } else if (c == CMD_UPD) { | |
443 | if (sa->key_len) { | |
444 | fprintf(stderr, "cannot change key on SA\n"); | |
445 | return -1; | |
446 | } | |
447 | } | |
448 | ||
449 | return 0; | |
450 | } | |
451 | ||
452 | static int do_modify_txsa(enum cmd c, int argc, char **argv, int ifindex) | |
453 | { | |
454 | struct sa_desc txsa = {0}; | |
455 | enum macsec_nl_commands cmd; | |
456 | ||
457 | txsa.an = 0xff; | |
458 | txsa.active = 0xff; | |
459 | ||
460 | if (argc == 0 || !get_sa(&argc, &argv, &txsa.an)) | |
461 | ipmacsec_usage(); | |
462 | ||
463 | if (c == CMD_DEL) | |
464 | goto modify; | |
465 | ||
466 | if (parse_sa_args(&argc, &argv, &txsa)) | |
467 | return -1; | |
468 | ||
469 | if (check_sa_args(c, &txsa)) | |
470 | return -1; | |
471 | ||
472 | modify: | |
473 | cmd = macsec_commands[c][1][0]; | |
474 | return do_modify_nl(c, cmd, ifindex, NULL, &txsa); | |
475 | } | |
476 | ||
477 | static int do_modify_rxsci(enum cmd c, int argc, char **argv, int ifindex) | |
478 | { | |
479 | struct rxsc_desc rxsc = {0}; | |
480 | struct sa_desc rxsa = {0}; | |
481 | bool sa_set; | |
482 | enum macsec_nl_commands cmd; | |
483 | ||
484 | rxsc.ifindex = ifindex; | |
485 | rxsc.active = 0xff; | |
486 | rxsa.an = 0xff; | |
487 | rxsa.active = 0xff; | |
488 | ||
489 | sa_set = parse_rxsci(&argc, &argv, &rxsc, &rxsa); | |
490 | ||
491 | if (c == CMD_DEL) | |
492 | goto modify; | |
493 | ||
494 | if (sa_set && (parse_sa_args(&argc, &argv, &rxsa) || | |
495 | check_sa_args(c, &rxsa))) | |
496 | return -1; | |
497 | if (!sa_set && parse_rxsci_args(&argc, &argv, &rxsc)) | |
498 | return -1; | |
499 | ||
500 | modify: | |
501 | cmd = macsec_commands[c][sa_set][1]; | |
502 | return do_modify_nl(c, cmd, rxsc.ifindex, &rxsc, &rxsa); | |
503 | } | |
504 | ||
505 | static int do_modify(enum cmd c, int argc, char **argv) | |
506 | { | |
507 | int ifindex; | |
508 | ||
509 | if (argc == 0) | |
510 | ipmacsec_usage(); | |
511 | ||
512 | ifindex = ll_name_to_index(*argv); | |
513 | if (!ifindex) { | |
514 | fprintf(stderr, "Device \"%s\" does not exist.\n", *argv); | |
515 | return -1; | |
516 | } | |
517 | argc--; argv++; | |
518 | ||
519 | if (argc == 0) | |
520 | ipmacsec_usage(); | |
521 | ||
522 | if (strcmp(*argv, "tx") == 0) | |
523 | return do_modify_txsa(c, argc-1, argv+1, ifindex); | |
524 | if (strcmp(*argv, "rx") == 0) | |
525 | return do_modify_rxsci(c, argc-1, argv+1, ifindex); | |
526 | ||
527 | ipmacsec_usage(); | |
528 | return -1; | |
529 | } | |
530 | ||
531 | /* dump/show */ | |
532 | static struct { | |
533 | int ifindex; | |
534 | __u64 sci; | |
535 | } filter; | |
536 | ||
537 | static int validate_dump(struct rtattr **attrs) | |
538 | { | |
539 | return attrs[MACSEC_ATTR_IFINDEX] && attrs[MACSEC_ATTR_SECY] && | |
540 | attrs[MACSEC_ATTR_TXSA_LIST] && attrs[MACSEC_ATTR_RXSC_LIST] && | |
541 | attrs[MACSEC_ATTR_TXSC_STATS] && attrs[MACSEC_ATTR_SECY_STATS]; | |
542 | ||
543 | } | |
544 | ||
545 | static int validate_secy_dump(struct rtattr **attrs) | |
546 | { | |
547 | return attrs[MACSEC_SECY_ATTR_SCI] && | |
548 | attrs[MACSEC_SECY_ATTR_ENCODING_SA] && | |
549 | attrs[MACSEC_SECY_ATTR_CIPHER_SUITE] && | |
550 | attrs[MACSEC_SECY_ATTR_ICV_LEN] && | |
551 | attrs[MACSEC_SECY_ATTR_PROTECT] && | |
552 | attrs[MACSEC_SECY_ATTR_REPLAY] && | |
553 | attrs[MACSEC_SECY_ATTR_OPER] && | |
554 | attrs[MACSEC_SECY_ATTR_VALIDATE] && | |
555 | attrs[MACSEC_SECY_ATTR_ENCRYPT] && | |
556 | attrs[MACSEC_SECY_ATTR_INC_SCI] && | |
557 | attrs[MACSEC_SECY_ATTR_ES] && | |
558 | attrs[MACSEC_SECY_ATTR_SCB]; | |
559 | } | |
560 | ||
561 | static void print_flag(FILE *f, struct rtattr *attrs[], const char *desc, | |
562 | int field) | |
563 | { | |
564 | if (attrs[field]) | |
565 | fprintf(f, "%s %s ", desc, | |
566 | values_on_off[!!rta_getattr_u8(attrs[field])]); | |
567 | } | |
568 | ||
569 | #define DEFAULT_CIPHER_NAME "GCM-AES-128" | |
570 | ||
571 | static const char *cs_id_to_name(__u64 cid) | |
572 | { | |
573 | switch (cid) { | |
574 | case MACSEC_DEFAULT_CIPHER_ID: | |
575 | case MACSEC_DEFAULT_CIPHER_ALT: | |
576 | return DEFAULT_CIPHER_NAME; | |
577 | default: | |
578 | return "(unknown)"; | |
579 | } | |
580 | } | |
581 | ||
582 | static void print_cipher_suite(const char *prefix, __u64 cid, __u8 icv_len) | |
583 | { | |
584 | printf("%scipher suite: %s, using ICV length %d\n", prefix, | |
585 | cs_id_to_name(cid), icv_len); | |
586 | } | |
587 | ||
588 | static void print_attrs(const char *prefix, struct rtattr *attrs[]) | |
589 | { | |
590 | print_flag(stdout, attrs, "protect", MACSEC_SECY_ATTR_PROTECT); | |
591 | ||
592 | if (attrs[MACSEC_SECY_ATTR_VALIDATE]) { | |
593 | __u8 val = rta_getattr_u8(attrs[MACSEC_SECY_ATTR_VALIDATE]); | |
594 | ||
595 | printf("validate %s ", VALIDATE_STR[val]); | |
596 | } | |
597 | ||
598 | print_flag(stdout, attrs, "sc", MACSEC_RXSC_ATTR_ACTIVE); | |
599 | print_flag(stdout, attrs, "sa", MACSEC_SA_ATTR_ACTIVE); | |
600 | print_flag(stdout, attrs, "encrypt", MACSEC_SECY_ATTR_ENCRYPT); | |
601 | print_flag(stdout, attrs, "send_sci", MACSEC_SECY_ATTR_INC_SCI); | |
602 | print_flag(stdout, attrs, "end_station", MACSEC_SECY_ATTR_ES); | |
603 | print_flag(stdout, attrs, "scb", MACSEC_SECY_ATTR_SCB); | |
604 | ||
605 | print_flag(stdout, attrs, "replay", MACSEC_SECY_ATTR_REPLAY); | |
606 | if (attrs[MACSEC_SECY_ATTR_WINDOW]) { | |
607 | printf("window %d ", | |
608 | rta_getattr_u32(attrs[MACSEC_SECY_ATTR_WINDOW])); | |
609 | } | |
610 | ||
611 | if (attrs[MACSEC_SECY_ATTR_CIPHER_SUITE] && | |
612 | attrs[MACSEC_SECY_ATTR_ICV_LEN]) { | |
613 | printf("\n"); | |
614 | print_cipher_suite(prefix, | |
615 | rta_getattr_u64(attrs[MACSEC_SECY_ATTR_CIPHER_SUITE]), | |
616 | rta_getattr_u8(attrs[MACSEC_SECY_ATTR_ICV_LEN])); | |
617 | } | |
618 | ||
619 | } | |
620 | ||
621 | static void print_one_stat(const char **names, struct rtattr **attr, int idx, | |
622 | bool long_stat) | |
623 | { | |
624 | int pad = strlen(names[idx]) + 1; | |
625 | ||
626 | if (attr[idx]) { | |
627 | if (long_stat) | |
628 | printf("%*llu", pad, rta_getattr_u64(attr[idx])); | |
629 | else | |
630 | printf("%*u", pad, rta_getattr_u32(attr[idx])); | |
631 | } else { | |
632 | printf("%*c", pad, '-'); | |
633 | } | |
634 | } | |
635 | ||
636 | static const char *txsc_stats_names[NUM_MACSEC_TXSC_STATS_ATTR] = { | |
637 | [MACSEC_TXSC_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutOctetsProtected", | |
638 | [MACSEC_TXSC_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutOctetsEncrypted", | |
639 | [MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_PROTECTED] = "OutPktsProtected", | |
640 | [MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_ENCRYPTED] = "OutPktsEncrypted", | |
641 | }; | |
642 | ||
643 | static void print_txsc_stats(const char *prefix, struct rtattr *attr) | |
644 | { | |
645 | struct rtattr *stats[MACSEC_TXSC_STATS_ATTR_MAX + 1]; | |
646 | int i; | |
647 | ||
648 | if (!attr || show_stats == 0) | |
649 | return; | |
650 | ||
651 | parse_rtattr_nested(stats, MACSEC_TXSC_STATS_ATTR_MAX + 1, attr); | |
652 | printf("%sstats:", prefix); | |
653 | ||
654 | for (i = 1; i < NUM_MACSEC_TXSC_STATS_ATTR; i++) { | |
655 | if (!txsc_stats_names[i]) | |
656 | continue; | |
657 | printf(" %s", txsc_stats_names[i]); | |
658 | } | |
659 | ||
660 | printf("\n%s ", prefix); | |
661 | ||
662 | for (i = 1; i < NUM_MACSEC_TXSC_STATS_ATTR; i++) { | |
663 | if (!txsc_stats_names[i]) | |
664 | continue; | |
665 | print_one_stat(txsc_stats_names, stats, i, true); | |
666 | } | |
667 | ||
668 | printf("\n"); | |
669 | } | |
670 | ||
671 | static const char *secy_stats_names[NUM_MACSEC_SECY_STATS_ATTR] = { | |
672 | [MACSEC_SECY_STATS_ATTR_OUT_PKTS_UNTAGGED] = "OutPktsUntagged", | |
673 | [MACSEC_SECY_STATS_ATTR_IN_PKTS_UNTAGGED] = "InPktsUntagged", | |
674 | [MACSEC_SECY_STATS_ATTR_OUT_PKTS_TOO_LONG] = "OutPktsTooLong", | |
675 | [MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_TAG] = "InPktsNoTag", | |
676 | [MACSEC_SECY_STATS_ATTR_IN_PKTS_BAD_TAG] = "InPktsBadTag", | |
677 | [MACSEC_SECY_STATS_ATTR_IN_PKTS_UNKNOWN_SCI] = "InPktsUnknownSCI", | |
678 | [MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_SCI] = "InPktsNoSCI", | |
679 | [MACSEC_SECY_STATS_ATTR_IN_PKTS_OVERRUN] = "InPktsOverrun", | |
680 | }; | |
681 | ||
682 | static void print_secy_stats(const char *prefix, struct rtattr *attr) | |
683 | { | |
684 | struct rtattr *stats[MACSEC_SECY_STATS_ATTR_MAX + 1]; | |
685 | int i; | |
686 | ||
687 | if (!attr || show_stats == 0) | |
688 | return; | |
689 | ||
690 | parse_rtattr_nested(stats, MACSEC_SECY_STATS_ATTR_MAX + 1, attr); | |
691 | printf("%sstats:", prefix); | |
692 | ||
693 | for (i = 1; i < NUM_MACSEC_SECY_STATS_ATTR; i++) { | |
694 | if (!secy_stats_names[i]) | |
695 | continue; | |
696 | printf(" %s", secy_stats_names[i]); | |
697 | } | |
698 | ||
699 | printf("\n%s ", prefix); | |
700 | ||
701 | for (i = 1; i < NUM_MACSEC_SECY_STATS_ATTR; i++) { | |
702 | if (!secy_stats_names[i]) | |
703 | continue; | |
704 | print_one_stat(secy_stats_names, stats, i, true); | |
705 | } | |
706 | ||
707 | printf("\n"); | |
708 | } | |
709 | ||
710 | static const char *rxsa_stats_names[NUM_MACSEC_SA_STATS_ATTR] = { | |
711 | [MACSEC_SA_STATS_ATTR_IN_PKTS_OK] = "InPktsOK", | |
712 | [MACSEC_SA_STATS_ATTR_IN_PKTS_INVALID] = "InPktsInvalid", | |
713 | [MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_VALID] = "InPktsNotValid", | |
714 | [MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_USING_SA] = "InPktsNotUsingSA", | |
715 | [MACSEC_SA_STATS_ATTR_IN_PKTS_UNUSED_SA] = "InPktsUnusedSA", | |
716 | }; | |
717 | ||
718 | static void print_rxsa_stats(const char *prefix, struct rtattr *attr) | |
719 | { | |
720 | struct rtattr *stats[MACSEC_SA_STATS_ATTR_MAX + 1]; | |
721 | int i; | |
722 | ||
723 | if (!attr || show_stats == 0) | |
724 | return; | |
725 | ||
726 | parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX + 1, attr); | |
727 | printf("%s%s ", prefix, prefix); | |
728 | ||
729 | for (i = 1; i < NUM_MACSEC_SA_STATS_ATTR; i++) { | |
730 | if (!rxsa_stats_names[i]) | |
731 | continue; | |
732 | printf(" %s", rxsa_stats_names[i]); | |
733 | } | |
734 | ||
735 | printf("\n%s%s ", prefix, prefix); | |
736 | ||
737 | for (i = 1; i < NUM_MACSEC_SA_STATS_ATTR; i++) { | |
738 | if (!rxsa_stats_names[i]) | |
739 | continue; | |
740 | print_one_stat(rxsa_stats_names, stats, i, false); | |
741 | } | |
742 | ||
743 | printf("\n"); | |
744 | } | |
745 | ||
746 | static const char *txsa_stats_names[NUM_MACSEC_SA_STATS_ATTR] = { | |
747 | [MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutPktsProtected", | |
748 | [MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutPktsEncrypted", | |
749 | }; | |
750 | ||
751 | static void print_txsa_stats(const char *prefix, struct rtattr *attr) | |
752 | { | |
753 | struct rtattr *stats[MACSEC_SA_STATS_ATTR_MAX + 1]; | |
754 | ||
755 | if (!attr || show_stats == 0) | |
756 | return; | |
757 | ||
758 | parse_rtattr_nested(stats, MACSEC_SA_STATS_ATTR_MAX + 1, attr); | |
759 | printf("%s%s %s %s\n", prefix, prefix, | |
760 | txsa_stats_names[MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED], | |
761 | txsa_stats_names[MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED]); | |
762 | printf("%s%s ", prefix, prefix); | |
763 | ||
764 | print_one_stat(txsa_stats_names, stats, | |
765 | MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED, false); | |
766 | print_one_stat(txsa_stats_names, stats, | |
767 | MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED, false); | |
768 | printf("\n"); | |
769 | } | |
770 | ||
771 | static void print_tx_sc(const char *prefix, __u64 sci, __u8 encoding_sa, | |
772 | struct rtattr *txsc_stats, struct rtattr *secy_stats, | |
773 | struct rtattr *sa) | |
774 | { | |
775 | struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1]; | |
776 | struct rtattr *a; | |
777 | int rem; | |
778 | ||
0330f49e | 779 | printf("%sTXSC: %016llx on SA %d\n", prefix, ntohll(sci), encoding_sa); |
b26fc590 SD |
780 | print_secy_stats(prefix, secy_stats); |
781 | print_txsc_stats(prefix, txsc_stats); | |
782 | ||
783 | rem = RTA_PAYLOAD(sa); | |
784 | for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) { | |
785 | SPRINT_BUF(keyid); | |
786 | bool state; | |
787 | ||
788 | parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX + 1, a); | |
789 | state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]); | |
790 | printf("%s%s%d: PN %u, state %s, key %s\n", prefix, prefix, | |
791 | rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]), | |
792 | rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]), | |
793 | values_on_off[state], | |
794 | hexstring_n2a(RTA_DATA(sa_attr[MACSEC_SA_ATTR_KEYID]), | |
795 | RTA_PAYLOAD(sa_attr[MACSEC_SA_ATTR_KEYID]), | |
796 | keyid, sizeof(keyid))); | |
797 | print_txsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]); | |
798 | } | |
799 | } | |
800 | ||
801 | static const char *rxsc_stats_names[NUM_MACSEC_RXSC_STATS_ATTR] = { | |
802 | [MACSEC_RXSC_STATS_ATTR_IN_OCTETS_VALIDATED] = "InOctetsValidated", | |
803 | [MACSEC_RXSC_STATS_ATTR_IN_OCTETS_DECRYPTED] = "InOctetsDecrypted", | |
804 | [MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNCHECKED] = "InPktsUnchecked", | |
805 | [MACSEC_RXSC_STATS_ATTR_IN_PKTS_DELAYED] = "InPktsDelayed", | |
806 | [MACSEC_RXSC_STATS_ATTR_IN_PKTS_OK] = "InPktsOK", | |
807 | [MACSEC_RXSC_STATS_ATTR_IN_PKTS_INVALID] = "InPktsInvalid", | |
808 | [MACSEC_RXSC_STATS_ATTR_IN_PKTS_LATE] = "InPktsLate", | |
809 | [MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_VALID] = "InPktsNotValid", | |
810 | [MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_USING_SA] = "InPktsNotUsingSA", | |
811 | [MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNUSED_SA] = "InPktsUnusedSA", | |
812 | }; | |
813 | ||
814 | static void print_rxsc_stats(const char *prefix, struct rtattr *attr) | |
815 | { | |
816 | struct rtattr *stats[MACSEC_RXSC_STATS_ATTR_MAX + 1]; | |
817 | int i; | |
818 | ||
819 | if (!attr || show_stats == 0) | |
820 | return; | |
821 | ||
822 | parse_rtattr_nested(stats, MACSEC_RXSC_STATS_ATTR_MAX + 1, attr); | |
823 | printf("%sstats:", prefix); | |
824 | for (i = 1; i < NUM_MACSEC_RXSC_STATS_ATTR; i++) { | |
825 | if (!rxsc_stats_names[i]) | |
826 | continue; | |
827 | printf(" %s", rxsc_stats_names[i]); | |
828 | } | |
829 | ||
830 | printf("\n%s ", prefix); | |
831 | ||
832 | for (i = 1; i < NUM_MACSEC_RXSC_STATS_ATTR; i++) { | |
833 | if (!rxsc_stats_names[i]) | |
834 | continue; | |
835 | print_one_stat(rxsc_stats_names, stats, i, true); | |
836 | } | |
837 | ||
838 | printf("\n"); | |
839 | } | |
840 | ||
841 | static void print_rx_sc(const char *prefix, __u64 sci, __u8 active, | |
842 | struct rtattr *rxsc_stats, struct rtattr *sa) | |
843 | { | |
844 | struct rtattr *sa_attr[MACSEC_SA_ATTR_MAX + 1]; | |
845 | struct rtattr *a; | |
846 | int rem; | |
847 | ||
0330f49e | 848 | printf("%sRXSC: %016llx, state %s\n", prefix, ntohll(sci), |
b26fc590 SD |
849 | values_on_off[!!active]); |
850 | print_rxsc_stats(prefix, rxsc_stats); | |
851 | ||
852 | rem = RTA_PAYLOAD(sa); | |
853 | for (a = RTA_DATA(sa); RTA_OK(a, rem); a = RTA_NEXT(a, rem)) { | |
854 | SPRINT_BUF(keyid); | |
855 | bool state; | |
856 | ||
857 | parse_rtattr_nested(sa_attr, MACSEC_SA_ATTR_MAX + 1, a); | |
858 | state = rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_ACTIVE]); | |
859 | printf("%s%s%d: PN %u, state %s, key %s\n", prefix, prefix, | |
860 | rta_getattr_u8(sa_attr[MACSEC_SA_ATTR_AN]), | |
861 | rta_getattr_u32(sa_attr[MACSEC_SA_ATTR_PN]), | |
862 | values_on_off[state], | |
863 | hexstring_n2a(RTA_DATA(sa_attr[MACSEC_SA_ATTR_KEYID]), | |
864 | RTA_PAYLOAD(sa_attr[MACSEC_SA_ATTR_KEYID]), | |
865 | keyid, sizeof(keyid))); | |
866 | print_rxsa_stats(prefix, sa_attr[MACSEC_SA_ATTR_STATS]); | |
867 | } | |
868 | } | |
869 | ||
870 | static int process(const struct sockaddr_nl *who, struct nlmsghdr *n, | |
871 | void *arg) | |
872 | { | |
873 | struct genlmsghdr *ghdr; | |
874 | struct rtattr *attrs[MACSEC_ATTR_MAX + 1], *sc, *c; | |
875 | struct rtattr *attrs_secy[MACSEC_SECY_ATTR_MAX + 1]; | |
876 | int len = n->nlmsg_len; | |
877 | int ifindex; | |
878 | __u64 sci; | |
879 | __u8 encoding_sa; | |
880 | int rem; | |
881 | ||
882 | if (n->nlmsg_type != genl_family) | |
883 | return -1; | |
884 | ||
885 | len -= NLMSG_LENGTH(GENL_HDRLEN); | |
886 | if (len < 0) | |
887 | return -1; | |
888 | ||
889 | ghdr = NLMSG_DATA(n); | |
890 | if (ghdr->cmd != MACSEC_CMD_GET_TXSC) | |
891 | return 0; | |
892 | ||
893 | parse_rtattr(attrs, MACSEC_ATTR_MAX, (void *) ghdr + GENL_HDRLEN, len); | |
894 | if (!validate_dump(attrs)) { | |
895 | printf("incomplete dump message\n"); | |
896 | return -1; | |
897 | } | |
898 | ||
899 | ifindex = rta_getattr_u32(attrs[MACSEC_ATTR_IFINDEX]); | |
900 | parse_rtattr_nested(attrs_secy, MACSEC_SECY_ATTR_MAX + 1, | |
901 | attrs[MACSEC_ATTR_SECY]); | |
902 | ||
903 | if (!validate_secy_dump(attrs_secy)) { | |
904 | printf("incomplete dump message\n"); | |
905 | return -1; | |
906 | } | |
907 | ||
908 | sci = rta_getattr_u64(attrs_secy[MACSEC_SECY_ATTR_SCI]); | |
909 | encoding_sa = rta_getattr_u8(attrs_secy[MACSEC_SECY_ATTR_ENCODING_SA]); | |
910 | ||
911 | if (filter.ifindex && ifindex != filter.ifindex) | |
912 | return 0; | |
913 | ||
914 | if (filter.sci && sci != filter.sci) | |
915 | return 0; | |
916 | ||
917 | printf("%d: %s: ", ifindex, ll_index_to_name(ifindex)); | |
918 | print_attrs(" ", attrs_secy); | |
919 | ||
920 | print_tx_sc(" ", sci, encoding_sa, | |
921 | attrs[MACSEC_ATTR_TXSC_STATS], | |
922 | attrs[MACSEC_ATTR_SECY_STATS], | |
923 | attrs[MACSEC_ATTR_TXSA_LIST]); | |
924 | ||
925 | if (!attrs[MACSEC_ATTR_RXSC_LIST]) | |
926 | return 0; | |
927 | ||
928 | sc = attrs[MACSEC_ATTR_RXSC_LIST]; | |
929 | rem = RTA_PAYLOAD(sc); | |
930 | for (c = RTA_DATA(sc); RTA_OK(c, rem); c = RTA_NEXT(c, rem)) { | |
931 | struct rtattr *sc_attr[MACSEC_RXSC_ATTR_MAX + 1]; | |
932 | ||
933 | parse_rtattr_nested(sc_attr, MACSEC_RXSC_ATTR_MAX + 1, c); | |
934 | print_rx_sc(" ", | |
935 | rta_getattr_u64(sc_attr[MACSEC_RXSC_ATTR_SCI]), | |
936 | rta_getattr_u32(sc_attr[MACSEC_RXSC_ATTR_ACTIVE]), | |
937 | sc_attr[MACSEC_RXSC_ATTR_STATS], | |
938 | sc_attr[MACSEC_RXSC_ATTR_SA_LIST]); | |
939 | } | |
940 | ||
941 | return 0; | |
942 | } | |
943 | ||
944 | static int do_dump(int ifindex) | |
945 | { | |
946 | MACSEC_GENL_REQ(req, MACSEC_BUFLEN, MACSEC_CMD_GET_TXSC, | |
947 | NLM_F_REQUEST | NLM_F_DUMP); | |
948 | ||
949 | memset(&filter, 0, sizeof(filter)); | |
950 | filter.ifindex = ifindex; | |
951 | ||
952 | req.n.nlmsg_seq = genl_rth.dump = ++genl_rth.seq; | |
953 | if (rtnl_send(&genl_rth, &req, req.n.nlmsg_len) < 0) { | |
954 | perror("Failed to send dump request"); | |
955 | exit(1); | |
956 | } | |
957 | ||
958 | if (rtnl_dump_filter(&genl_rth, process, stdout) < 0) { | |
959 | fprintf(stderr, "Dump terminated\n"); | |
960 | exit(1); | |
961 | } | |
962 | ||
963 | return 0; | |
964 | } | |
965 | ||
966 | static int do_show(int argc, char **argv) | |
967 | { | |
968 | int ifindex; | |
969 | ||
970 | if (argc == 0) | |
971 | return do_dump(0); | |
972 | ||
973 | ifindex = ll_name_to_index(*argv); | |
974 | if (ifindex == 0) { | |
975 | fprintf(stderr, "Device \"%s\" does not exist.\n", *argv); | |
976 | return -1; | |
977 | } | |
978 | ||
979 | argc--, argv++; | |
980 | if (argc == 0) | |
981 | return do_dump(ifindex); | |
982 | ||
983 | ipmacsec_usage(); | |
984 | return -1; | |
985 | } | |
986 | ||
987 | int do_ipmacsec(int argc, char **argv) | |
988 | { | |
b26fc590 SD |
989 | if (argc < 1) |
990 | ipmacsec_usage(); | |
991 | ||
992 | if (matches(*argv, "help") == 0) | |
993 | ipmacsec_usage(); | |
994 | ||
688f9aa4 SD |
995 | if (genl_init_handle(&genl_rth, MACSEC_GENL_NAME, &genl_family)) |
996 | exit(1); | |
997 | ||
b26fc590 SD |
998 | if (matches(*argv, "show") == 0) |
999 | return do_show(argc-1, argv+1); | |
1000 | ||
1001 | if (matches(*argv, "add") == 0) | |
1002 | return do_modify(CMD_ADD, argc-1, argv+1); | |
1003 | if (matches(*argv, "set") == 0) | |
1004 | return do_modify(CMD_UPD, argc-1, argv+1); | |
1005 | if (matches(*argv, "delete") == 0) | |
1006 | return do_modify(CMD_DEL, argc-1, argv+1); | |
1007 | ||
1008 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip macsec help\".\n", | |
1009 | *argv); | |
1010 | exit(-1); | |
1011 | } | |
1012 | ||
1013 | /* device creation */ | |
1014 | static void macsec_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
1015 | { | |
1016 | if (!tb) | |
1017 | return; | |
1018 | ||
1019 | if (tb[IFLA_MACSEC_SCI]) { | |
1020 | fprintf(f, "sci %016llx ", | |
0330f49e | 1021 | ntohll(rta_getattr_u64(tb[IFLA_MACSEC_SCI]))); |
b26fc590 SD |
1022 | } |
1023 | ||
1024 | print_flag(f, tb, "protect", IFLA_MACSEC_PROTECT); | |
1025 | ||
1026 | if (tb[IFLA_MACSEC_CIPHER_SUITE]) { | |
1027 | __u64 csid = rta_getattr_u64(tb[IFLA_MACSEC_CIPHER_SUITE]); | |
1028 | ||
1029 | fprintf(f, "cipher %s ", cs_id_to_name(csid)); | |
1030 | } | |
1031 | ||
1032 | if (tb[IFLA_MACSEC_ICV_LEN]) { | |
1033 | fprintf(f, "icvlen %hhu ", | |
1034 | rta_getattr_u8(tb[IFLA_MACSEC_ICV_LEN])); | |
1035 | } | |
1036 | ||
1037 | if (tb[IFLA_MACSEC_ENCODING_SA]) { | |
1038 | fprintf(f, "encodingsa %hhu ", | |
1039 | rta_getattr_u8(tb[IFLA_MACSEC_ENCODING_SA])); | |
1040 | } | |
1041 | ||
1042 | if (tb[IFLA_MACSEC_VALIDATION]) { | |
1043 | __u8 val = rta_getattr_u8(tb[IFLA_MACSEC_VALIDATION]); | |
1044 | ||
1045 | fprintf(f, "validate %s ", VALIDATE_STR[val]); | |
1046 | } | |
1047 | ||
1048 | print_flag(f, tb, "encrypt", IFLA_MACSEC_ENCRYPT); | |
1049 | print_flag(f, tb, "send_sci", IFLA_MACSEC_INC_SCI); | |
1050 | print_flag(f, tb, "end_station", IFLA_MACSEC_ES); | |
1051 | print_flag(f, tb, "scb", IFLA_MACSEC_SCB); | |
1052 | ||
1053 | print_flag(f, tb, "replay", IFLA_MACSEC_REPLAY_PROTECT); | |
1054 | if (tb[IFLA_MACSEC_WINDOW]) { | |
1055 | fprintf(f, "window %d ", | |
1056 | rta_getattr_u32(tb[IFLA_MACSEC_WINDOW])); | |
1057 | } | |
1058 | } | |
1059 | ||
b26fc590 SD |
1060 | static bool check_txsc_flags(bool es, bool scb, bool sci) |
1061 | { | |
1062 | if (sci && (es || scb)) | |
1063 | return false; | |
1064 | if (es && scb) | |
1065 | return false; | |
1066 | return true; | |
1067 | } | |
1068 | ||
1069 | static void usage(FILE *f) | |
1070 | { | |
1071 | fprintf(f, | |
5898bd66 | 1072 | "Usage: ... macsec [ [ address <lladdr> ] port { 1..2^16-1 } | sci <u64> ]\n" |
89bb6e67 DC |
1073 | " [ cipher { default | gcm-aes-128 } ]\n" |
1074 | " [ icvlen { 8..16 } ]\n" | |
b26fc590 SD |
1075 | " [ encrypt { on | off } ]\n" |
1076 | " [ send_sci { on | off } ]\n" | |
1077 | " [ end_station { on | off } ]\n" | |
1078 | " [ scb { on | off } ]\n" | |
1079 | " [ protect { on | off } ]\n" | |
1080 | " [ replay { on | off} window { 0..2^32-1 } ]\n" | |
1081 | " [ validate { strict | check | disabled } ]\n" | |
1082 | " [ encodingsa { 0..3 } ]\n" | |
1083 | ); | |
b26fc590 SD |
1084 | } |
1085 | ||
1086 | static int macsec_parse_opt(struct link_util *lu, int argc, char **argv, | |
1087 | struct nlmsghdr *hdr) | |
1088 | { | |
1089 | int ret; | |
1090 | __u8 encoding_sa = 0xff; | |
1091 | __u32 window = -1; | |
1092 | struct cipher_args cipher = {0}; | |
1093 | enum macsec_validation_type validate; | |
1094 | bool es = false, scb = false, send_sci = false; | |
1095 | int replay_protect = -1; | |
1096 | struct sci sci = { 0 }; | |
1097 | ||
1098 | ret = get_sci_portaddr(&sci, &argc, &argv, true, true); | |
1099 | if (ret < 0) { | |
1100 | fprintf(stderr, "expected sci\n"); | |
1101 | return -1; | |
1102 | } | |
1103 | ||
1104 | if (ret > 0) { | |
1105 | if (sci.sci) | |
1106 | addattr_l(hdr, MACSEC_BUFLEN, IFLA_MACSEC_SCI, | |
1107 | &sci.sci, sizeof(sci.sci)); | |
1108 | else | |
1109 | addattr_l(hdr, MACSEC_BUFLEN, IFLA_MACSEC_PORT, | |
1110 | &sci.port, sizeof(sci.port)); | |
1111 | } | |
1112 | ||
1113 | while (argc > 0) { | |
1114 | if (strcmp(*argv, "cipher") == 0) { | |
89bb6e67 | 1115 | NEXT_ARG(); |
b26fc590 | 1116 | if (cipher.id) |
89bb6e67 DC |
1117 | duparg("cipher", *argv); |
1118 | if (strcmp(*argv, "default") == 0 || | |
1119 | strcmp(*argv, "gcm-aes-128") == 0 || | |
1120 | strcmp(*argv, "GCM-AES-128") == 0) | |
1121 | cipher.id = MACSEC_DEFAULT_CIPHER_ID; | |
1122 | else | |
1123 | invarg("expected: default or gcm-aes-128", | |
1124 | *argv); | |
1125 | } else if (strcmp(*argv, "icvlen") == 0) { | |
b26fc590 | 1126 | NEXT_ARG(); |
89bb6e67 DC |
1127 | if (cipher.icv_len) |
1128 | duparg("icvlen", *argv); | |
1129 | get_icvlen(&cipher.icv_len, *argv); | |
b26fc590 SD |
1130 | } else if (strcmp(*argv, "encrypt") == 0) { |
1131 | NEXT_ARG(); | |
1132 | int i; | |
1133 | ||
1134 | ret = one_of("encrypt", *argv, values_on_off, | |
1135 | ARRAY_SIZE(values_on_off), &i); | |
1136 | if (ret != 0) | |
1137 | return ret; | |
1138 | addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_ENCRYPT, i); | |
1139 | } else if (strcmp(*argv, "send_sci") == 0) { | |
1140 | NEXT_ARG(); | |
1141 | int i; | |
1142 | ||
1143 | ret = one_of("send_sci", *argv, values_on_off, | |
1144 | ARRAY_SIZE(values_on_off), &i); | |
1145 | if (ret != 0) | |
1146 | return ret; | |
1147 | send_sci = i; | |
1148 | addattr8(hdr, MACSEC_BUFLEN, | |
1149 | IFLA_MACSEC_INC_SCI, send_sci); | |
1150 | } else if (strcmp(*argv, "end_station") == 0) { | |
1151 | NEXT_ARG(); | |
1152 | int i; | |
1153 | ||
1154 | ret = one_of("end_station", *argv, values_on_off, | |
1155 | ARRAY_SIZE(values_on_off), &i); | |
1156 | if (ret != 0) | |
1157 | return ret; | |
1158 | es = i; | |
1159 | addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_ES, es); | |
1160 | } else if (strcmp(*argv, "scb") == 0) { | |
1161 | NEXT_ARG(); | |
1162 | int i; | |
1163 | ||
1164 | ret = one_of("scb", *argv, values_on_off, | |
1165 | ARRAY_SIZE(values_on_off), &i); | |
1166 | if (ret != 0) | |
1167 | return ret; | |
1168 | scb = i; | |
1169 | addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_SCB, scb); | |
1170 | } else if (strcmp(*argv, "protect") == 0) { | |
1171 | NEXT_ARG(); | |
1172 | int i; | |
1173 | ||
1174 | ret = one_of("protect", *argv, values_on_off, | |
1175 | ARRAY_SIZE(values_on_off), &i); | |
1176 | if (ret != 0) | |
1177 | return ret; | |
1178 | addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_PROTECT, i); | |
1179 | } else if (strcmp(*argv, "replay") == 0) { | |
1180 | NEXT_ARG(); | |
1181 | int i; | |
1182 | ||
1183 | ret = one_of("replay", *argv, values_on_off, | |
1184 | ARRAY_SIZE(values_on_off), &i); | |
1185 | if (ret != 0) | |
1186 | return ret; | |
1187 | replay_protect = !!i; | |
1188 | } else if (strcmp(*argv, "window") == 0) { | |
1189 | NEXT_ARG(); | |
1190 | ret = get_u32(&window, *argv, 0); | |
1191 | if (ret) | |
1192 | invarg("expected replay window size", *argv); | |
1193 | } else if (strcmp(*argv, "validate") == 0) { | |
1194 | NEXT_ARG(); | |
1195 | ret = one_of("validate", *argv, | |
1196 | VALIDATE_STR, ARRAY_SIZE(VALIDATE_STR), | |
1197 | (int *)&validate); | |
1198 | if (ret != 0) | |
1199 | return ret; | |
1200 | addattr8(hdr, MACSEC_BUFLEN, | |
1201 | IFLA_MACSEC_VALIDATION, validate); | |
1202 | } else if (strcmp(*argv, "encodingsa") == 0) { | |
1203 | if (encoding_sa != 0xff) | |
1204 | duparg2("encodingsa", "encodingsa"); | |
1205 | NEXT_ARG(); | |
1206 | ret = get_an(&encoding_sa, *argv); | |
1207 | if (ret) | |
1208 | invarg("expected an { 0..3 }", *argv); | |
1209 | } else { | |
1210 | fprintf(stderr, "macsec: unknown command \"%s\"?\n", | |
1211 | *argv); | |
1212 | usage(stderr); | |
1213 | return -1; | |
1214 | } | |
1215 | ||
1216 | argv++; argc--; | |
1217 | } | |
1218 | ||
1219 | if (!check_txsc_flags(es, scb, send_sci)) { | |
1220 | fprintf(stderr, "invalid combination of send_sci/end_station/scb\n"); | |
1221 | return -1; | |
1222 | } | |
1223 | ||
1224 | if (window != -1 && replay_protect == -1) { | |
1225 | fprintf(stderr, | |
1226 | "replay window set, but replay protection not enabled. did you mean 'replay on window %u'?\n", | |
1227 | window); | |
1228 | return -1; | |
1229 | } else if (window == -1 && replay_protect == 1) { | |
1230 | fprintf(stderr, | |
1231 | "replay protection enabled, but no window set. did you mean 'replay on window VALUE'?\n"); | |
1232 | return -1; | |
1233 | } | |
1234 | ||
89bb6e67 | 1235 | if (cipher.id) |
b26fc590 SD |
1236 | addattr_l(hdr, MACSEC_BUFLEN, IFLA_MACSEC_CIPHER_SUITE, |
1237 | &cipher.id, sizeof(cipher.id)); | |
89bb6e67 | 1238 | if (cipher.icv_len) |
b26fc590 SD |
1239 | addattr_l(hdr, MACSEC_BUFLEN, IFLA_MACSEC_ICV_LEN, |
1240 | &cipher.icv_len, sizeof(cipher.icv_len)); | |
b26fc590 SD |
1241 | |
1242 | if (replay_protect != -1) { | |
1243 | addattr32(hdr, MACSEC_BUFLEN, IFLA_MACSEC_WINDOW, window); | |
1244 | addattr8(hdr, MACSEC_BUFLEN, IFLA_MACSEC_REPLAY_PROTECT, | |
1245 | replay_protect); | |
1246 | } | |
1247 | ||
1248 | if (encoding_sa != 0xff) { | |
1249 | addattr_l(hdr, MACSEC_BUFLEN, IFLA_MACSEC_ENCODING_SA, | |
1250 | &encoding_sa, sizeof(encoding_sa)); | |
1251 | } | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | static void macsec_print_help(struct link_util *lu, int argc, char **argv, | |
1257 | FILE *f) | |
1258 | { | |
1259 | usage(f); | |
1260 | } | |
1261 | ||
1262 | struct link_util macsec_link_util = { | |
1263 | .id = "macsec", | |
1264 | .maxattr = IFLA_MACSEC_MAX, | |
1265 | .parse_opt = macsec_parse_opt, | |
1266 | .print_help = macsec_print_help, | |
1267 | .print_opt = macsec_print_opt, | |
b26fc590 | 1268 | }; |