Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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"); |
Davide Caratti | 5898bd6 | 2016-08-30 13:23:12 +0200 | [diff] [blame] | 98 | fprintf(stderr, " SCI := { sci <u64> | port { 1..2^16-1 } address <lladdr> }\n"); |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | { |
Davide Caratti | 0330f49 | 2016-08-30 13:23:14 +0200 | [diff] [blame] | 137 | return get_be64(sci, arg, 16); |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | static int get_port(__be16 *port, const char *arg) |
| 141 | { |
Davide Caratti | 5898bd6 | 2016-08-30 13:23:12 +0200 | [diff] [blame] | 142 | return get_be16(port, arg, 0); |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | |
Davide Caratti | f20f5f7 | 2016-09-09 16:02:22 +0200 | [diff] [blame] | 155 | if (*icvlen < MACSEC_MIN_ICV_LEN || *icvlen > MACSEC_STD_ICV_LEN) |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 156 | invarg("ICV length must be in the range {" |
Davide Caratti | f20f5f7 | 2016-09-09 16:02:22 +0200 | [diff] [blame] | 157 | STR(MACSEC_MIN_ICV_LEN) ".." STR(MACSEC_STD_ICV_LEN) |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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] = { |
Daniel Hopf | 3a4df03 | 2016-11-29 13:22:12 -0800 | [diff] [blame] | 637 | [MACSEC_TXSC_STATS_ATTR_OUT_PKTS_PROTECTED] = "OutPktsProtected", |
| 638 | [MACSEC_TXSC_STATS_ATTR_OUT_PKTS_ENCRYPTED] = "OutPktsEncrypted", |
| 639 | [MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_PROTECTED] = "OutOctetsProtected", |
| 640 | [MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_ENCRYPTED] = "OutOctetsEncrypted", |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | |
Davide Caratti | 0330f49 | 2016-08-30 13:23:14 +0200 | [diff] [blame] | 779 | printf("%sTXSC: %016llx on SA %d\n", prefix, ntohll(sci), encoding_sa); |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | |
Davide Caratti | 0330f49 | 2016-08-30 13:23:14 +0200 | [diff] [blame] | 848 | printf("%sRXSC: %016llx, state %s\n", prefix, ntohll(sci), |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | { |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 989 | if (argc < 1) |
| 990 | ipmacsec_usage(); |
| 991 | |
| 992 | if (matches(*argv, "help") == 0) |
| 993 | ipmacsec_usage(); |
| 994 | |
Sabrina Dubroca | 688f9aa | 2016-08-16 16:26:56 +0200 | [diff] [blame] | 995 | if (genl_init_handle(&genl_rth, MACSEC_GENL_NAME, &genl_family)) |
| 996 | exit(1); |
| 997 | |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 ", |
Davide Caratti | 0330f49 | 2016-08-30 13:23:14 +0200 | [diff] [blame] | 1021 | ntohll(rta_getattr_u64(tb[IFLA_MACSEC_SCI]))); |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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, |
Davide Caratti | 5898bd6 | 2016-08-30 13:23:12 +0200 | [diff] [blame] | 1072 | "Usage: ... macsec [ [ address <lladdr> ] port { 1..2^16-1 } | sci <u64> ]\n" |
Davide Caratti | 89bb6e6 | 2016-07-26 11:03:20 +0200 | [diff] [blame] | 1073 | " [ cipher { default | gcm-aes-128 } ]\n" |
| 1074 | " [ icvlen { 8..16 } ]\n" |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | ); |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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) { |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 1115 | NEXT_ARG(); |
Davide Caratti | 89bb6e6 | 2016-07-26 11:03:20 +0200 | [diff] [blame] | 1116 | if (cipher.id) |
| 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) { |
| 1126 | NEXT_ARG(); |
| 1127 | if (cipher.icv_len) |
| 1128 | duparg("icvlen", *argv); |
| 1129 | get_icvlen(&cipher.icv_len, *argv); |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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 | |
Davide Caratti | 89bb6e6 | 2016-07-26 11:03:20 +0200 | [diff] [blame] | 1235 | if (cipher.id) |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 1236 | addattr_l(hdr, MACSEC_BUFLEN, IFLA_MACSEC_CIPHER_SUITE, |
| 1237 | &cipher.id, sizeof(cipher.id)); |
Davide Caratti | 89bb6e6 | 2016-07-26 11:03:20 +0200 | [diff] [blame] | 1238 | if (cipher.icv_len) |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 1239 | addattr_l(hdr, MACSEC_BUFLEN, IFLA_MACSEC_ICV_LEN, |
| 1240 | &cipher.icv_len, sizeof(cipher.icv_len)); |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 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, |
Sabrina Dubroca | b26fc59 | 2016-06-08 09:34:21 -0700 | [diff] [blame] | 1268 | }; |