1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/ioctl.h> 34 #ifdef JAIL 35 #include <sys/jail.h> 36 #endif 37 #include <sys/module.h> 38 #include <sys/linker.h> 39 #include <sys/nv.h> 40 #include <sys/queue.h> 41 #include <sys/socket.h> 42 #include <sys/time.h> 43 44 #include <net/ethernet.h> 45 #include <net/if.h> 46 #include <net/if_dl.h> 47 #include <net/if_strings.h> 48 #include <net/if_types.h> 49 #include <net/route.h> 50 51 /* IP */ 52 #include <netinet/in.h> 53 #include <netinet/in_var.h> 54 #include <arpa/inet.h> 55 #include <netdb.h> 56 57 #include <fnmatch.h> 58 #include <ifaddrs.h> 59 #include <ctype.h> 60 #include <err.h> 61 #include <errno.h> 62 #include <fcntl.h> 63 #ifdef JAIL 64 #include <jail.h> 65 #endif 66 #include <stdbool.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <string.h> 70 #include <unistd.h> 71 72 #include <libifconfig.h> 73 74 #include "ifconfig.h" 75 76 ifconfig_handle_t *lifh; 77 78 #ifdef WITHOUT_NETLINK 79 static char *descr = NULL; 80 static size_t descrlen = 64; 81 #endif 82 static int setaddr; 83 static int setmask; 84 static int doalias; 85 static int clearaddr; 86 static int newaddr = 1; 87 88 int exit_code = 0; 89 90 static char ifname_to_print[IFNAMSIZ]; /* Helper for printifnamemaybe() */ 91 92 /* Formatter Strings */ 93 char *f_inet, *f_inet6, *f_ether, *f_addr; 94 95 #ifdef WITHOUT_NETLINK 96 static void list_interfaces_ioctl(if_ctx *ctx); 97 static void status(if_ctx *ctx, const struct sockaddr_dl *sdl, 98 struct ifaddrs *ifa); 99 #endif 100 static _Noreturn void usage(void); 101 static void Perrorc(const char *cmd, int error); 102 103 static int getifflags(const char *ifname, int us, bool err_ok); 104 105 static struct afswtch *af_getbyname(const char *name); 106 107 static struct option *opts = NULL; 108 109 struct ifa_order_elt { 110 int if_order; 111 int af_orders[255]; 112 struct ifaddrs *ifa; 113 TAILQ_ENTRY(ifa_order_elt) link; 114 }; 115 116 TAILQ_HEAD(ifa_queue, ifa_order_elt); 117 118 static struct module_map_entry { 119 const char *ifname; 120 const char *kldname; 121 } module_map[] = { 122 { 123 .ifname = "tun", 124 .kldname = "if_tuntap", 125 }, 126 { 127 .ifname = "tap", 128 .kldname = "if_tuntap", 129 }, 130 { 131 .ifname = "vmnet", 132 .kldname = "if_tuntap", 133 }, 134 { 135 .ifname = "ipsec", 136 .kldname = "ipsec", 137 }, 138 { 139 /* 140 * This mapping exists because there is a conflicting enc module 141 * in CAM. ifconfig's guessing behavior will attempt to match 142 * the ifname to a module as well as if_${ifname} and clash with 143 * CAM enc. This is an assertion of the correct module to load. 144 */ 145 .ifname = "enc", 146 .kldname = "if_enc", 147 }, 148 }; 149 150 151 void 152 opt_register(struct option *p) 153 { 154 p->next = opts; 155 opts = p; 156 } 157 158 static void 159 usage(void) 160 { 161 char options[1024]; 162 struct option *p; 163 164 /* XXX not right but close enough for now */ 165 options[0] = '\0'; 166 for (p = opts; p != NULL; p = p->next) { 167 strlcat(options, p->opt_usage, sizeof(options)); 168 strlcat(options, " ", sizeof(options)); 169 } 170 171 fprintf(stderr, 172 "usage: ifconfig [-j jail] [-f type:format] %sinterface address_family\n" 173 " [address [dest_address]] [parameters]\n" 174 " ifconfig [-j jail] interface create\n" 175 " ifconfig [-j jail] -a %s[-d] [-m] [-u] [-v] [address_family]\n" 176 " ifconfig [-j jail] -l [-d] [-u] [address_family]\n" 177 " ifconfig [-j jail] %s[-d] [-m] [-u] [-v]\n", 178 options, options, options); 179 exit(1); 180 } 181 182 static void 183 ifname_update(if_ctx *ctx, const char *name) 184 { 185 strlcpy(ctx->_ifname_storage_ioctl, name, sizeof(ctx->_ifname_storage_ioctl)); 186 ctx->ifname = ctx->_ifname_storage_ioctl; 187 188 strlcpy(ifname_to_print, name, sizeof(ifname_to_print)); 189 } 190 191 static void 192 ifr_set_name(struct ifreq *ifr, const char *name) 193 { 194 strlcpy(ifr->ifr_name, name, sizeof(ifr->ifr_name)); 195 } 196 197 int 198 ioctl_ctx_ifr(if_ctx *ctx, unsigned long cmd, struct ifreq *ifr) 199 { 200 ifr_set_name(ifr, ctx->ifname); 201 return (ioctl_ctx(ctx, cmd, ifr)); 202 } 203 204 void 205 ifcreate_ioctl(if_ctx *ctx, struct ifreq *ifr) 206 { 207 char ifname_orig[IFNAMSIZ]; 208 209 strlcpy(ifname_orig, ifr->ifr_name, sizeof(ifname_orig)); 210 211 if (ioctl(ctx->io_s, SIOCIFCREATE2, ifr) < 0) { 212 switch (errno) { 213 case EEXIST: 214 errx(1, "interface %s already exists", ifr->ifr_name); 215 default: 216 err(1, "SIOCIFCREATE2 (%s)", ifr->ifr_name); 217 } 218 } 219 220 if (strncmp(ifname_orig, ifr->ifr_name, sizeof(ifname_orig)) != 0) 221 ifname_update(ctx, ifr->ifr_name); 222 } 223 224 #ifdef WITHOUT_NETLINK 225 static int 226 calcorders(struct ifaddrs *ifa, struct ifa_queue *q) 227 { 228 struct ifaddrs *prev; 229 struct ifa_order_elt *cur; 230 unsigned int ord, af, ifa_ord; 231 232 prev = NULL; 233 cur = NULL; 234 ord = 0; 235 ifa_ord = 0; 236 237 while (ifa != NULL) { 238 if (prev == NULL || 239 strcmp(ifa->ifa_name, prev->ifa_name) != 0) { 240 cur = calloc(1, sizeof(*cur)); 241 242 if (cur == NULL) 243 return (-1); 244 245 TAILQ_INSERT_TAIL(q, cur, link); 246 cur->if_order = ifa_ord ++; 247 cur->ifa = ifa; 248 ord = 0; 249 } 250 251 if (ifa->ifa_addr) { 252 af = ifa->ifa_addr->sa_family; 253 254 if (af < nitems(cur->af_orders) && 255 cur->af_orders[af] == 0) 256 cur->af_orders[af] = ++ord; 257 } 258 prev = ifa; 259 ifa = ifa->ifa_next; 260 } 261 262 return (0); 263 } 264 265 static int 266 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q) 267 { 268 struct ifa_order_elt *cur, *e1, *e2; 269 unsigned int af1, af2; 270 int ret; 271 272 e1 = e2 = NULL; 273 274 ret = strcmp(a->ifa_name, b->ifa_name); 275 if (ret != 0) { 276 TAILQ_FOREACH(cur, q, link) { 277 if (e1 && e2) 278 break; 279 280 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) 281 e1 = cur; 282 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0) 283 e2 = cur; 284 } 285 286 if (!e1 || !e2) 287 return (0); 288 else 289 return (e1->if_order - e2->if_order); 290 291 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) { 292 TAILQ_FOREACH(cur, q, link) { 293 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) { 294 e1 = cur; 295 break; 296 } 297 } 298 299 if (!e1) 300 return (0); 301 302 af1 = a->ifa_addr->sa_family; 303 af2 = b->ifa_addr->sa_family; 304 305 if (af1 < nitems(e1->af_orders) && af2 < nitems(e1->af_orders)) 306 return (e1->af_orders[af1] - e1->af_orders[af2]); 307 } 308 309 return (0); 310 } 311 #endif 312 313 static void freeformat(void) 314 { 315 316 free(f_inet); 317 free(f_inet6); 318 free(f_ether); 319 free(f_addr); 320 } 321 322 static void setformat(char *input) 323 { 324 char *formatstr, *category, *modifier; 325 326 formatstr = strdup(input); 327 while ((category = strsep(&formatstr, ",")) != NULL) { 328 modifier = strchr(category, ':'); 329 if (modifier == NULL) { 330 if (strcmp(category, "default") == 0) { 331 freeformat(); 332 } else if (strcmp(category, "cidr") == 0) { 333 free(f_inet); 334 f_inet = strdup(category); 335 free(f_inet6); 336 f_inet6 = strdup(category); 337 } else { 338 warnx("Skipping invalid format: %s\n", 339 category); 340 } 341 continue; 342 } 343 344 /* Split the string on the separator, then seek past it */ 345 modifier[0] = '\0'; 346 modifier++; 347 348 if (strcmp(category, "addr") == 0) { 349 free(f_addr); 350 f_addr = strdup(modifier); 351 } else if (strcmp(category, "ether") == 0) { 352 free(f_ether); 353 f_ether = strdup(modifier); 354 } else if (strcmp(category, "inet") == 0) { 355 free(f_inet); 356 f_inet = strdup(modifier); 357 } else if (strcmp(category, "inet6") == 0) { 358 free(f_inet6); 359 f_inet6 = strdup(modifier); 360 } 361 } 362 free(formatstr); 363 } 364 365 #ifdef WITHOUT_NETLINK 366 static struct ifaddrs * 367 sortifaddrs(struct ifaddrs *list, 368 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *), 369 struct ifa_queue *q) 370 { 371 struct ifaddrs *right, *temp, *last, *result, *next, *tail; 372 373 right = list; 374 temp = list; 375 last = list; 376 result = NULL; 377 next = NULL; 378 tail = NULL; 379 380 if (!list || !list->ifa_next) 381 return (list); 382 383 while (temp && temp->ifa_next) { 384 last = right; 385 right = right->ifa_next; 386 temp = temp->ifa_next->ifa_next; 387 } 388 389 last->ifa_next = NULL; 390 391 list = sortifaddrs(list, compare, q); 392 right = sortifaddrs(right, compare, q); 393 394 while (list || right) { 395 396 if (!right) { 397 next = list; 398 list = list->ifa_next; 399 } else if (!list) { 400 next = right; 401 right = right->ifa_next; 402 } else if (compare(list, right, q) <= 0) { 403 next = list; 404 list = list->ifa_next; 405 } else { 406 next = right; 407 right = right->ifa_next; 408 } 409 410 if (!result) 411 result = next; 412 else 413 tail->ifa_next = next; 414 415 tail = next; 416 } 417 418 return (result); 419 } 420 #endif 421 422 static void 423 printifnamemaybe(void) 424 { 425 if (ifname_to_print[0] != '\0') 426 printf("%s\n", ifname_to_print); 427 } 428 429 static void 430 list_interfaces(if_ctx *ctx) 431 { 432 #ifdef WITHOUT_NETLINK 433 list_interfaces_ioctl(ctx); 434 #else 435 list_interfaces_nl(ctx->args); 436 #endif 437 } 438 439 static char * 440 args_peek(struct ifconfig_args *args) 441 { 442 if (args->argc > 0) 443 return (args->argv[0]); 444 return (NULL); 445 } 446 447 static char * 448 args_pop(struct ifconfig_args *args) 449 { 450 if (args->argc == 0) 451 return (NULL); 452 453 char *arg = args->argv[0]; 454 455 args->argc--; 456 args->argv++; 457 458 return (arg); 459 } 460 461 static void 462 args_parse(struct ifconfig_args *args, int argc, char *argv[]) 463 { 464 char options[1024]; 465 struct option *p; 466 int c; 467 468 /* Parse leading line options */ 469 strlcpy(options, "G:adDf:j:klmnuv", sizeof(options)); 470 for (p = opts; p != NULL; p = p->next) 471 strlcat(options, p->opt, sizeof(options)); 472 while ((c = getopt(argc, argv, options)) != -1) { 473 switch (c) { 474 case 'a': /* scan all interfaces */ 475 args->all = true; 476 break; 477 case 'd': /* restrict scan to "down" interfaces */ 478 args->downonly = true; 479 break; 480 case 'D': /* Print driver name */ 481 args->drivername = true; 482 break; 483 case 'f': 484 if (optarg == NULL) 485 usage(); 486 setformat(optarg); 487 break; 488 case 'G': 489 if (optarg == NULL || args->all == 0) 490 usage(); 491 args->nogroup = optarg; 492 break; 493 case 'j': 494 #ifdef JAIL 495 if (optarg == NULL) 496 usage(); 497 args->jail_name = optarg; 498 #else 499 Perror("not built with jail support"); 500 #endif 501 break; 502 case 'k': 503 args->printkeys = true; 504 break; 505 case 'l': /* scan interface names only */ 506 args->namesonly = true; 507 break; 508 case 'm': /* show media choices in status */ 509 args->supmedia = true; 510 break; 511 case 'n': /* suppress module loading */ 512 args->noload = true; 513 break; 514 case 'u': /* restrict scan to "up" interfaces */ 515 args->uponly = true; 516 break; 517 case 'v': 518 args->verbose++; 519 break; 520 case 'g': 521 if (args->all) { 522 if (optarg == NULL) 523 usage(); 524 args->matchgroup = optarg; 525 break; 526 } 527 /* FALLTHROUGH */ 528 default: 529 for (p = opts; p != NULL; p = p->next) 530 if (p->opt[0] == c) { 531 p->cb(optarg); 532 break; 533 } 534 if (p == NULL) 535 usage(); 536 break; 537 } 538 } 539 argc -= optind; 540 argv += optind; 541 542 /* -l cannot be used with -a or -m */ 543 if (args->namesonly && (args->all || args->supmedia)) 544 usage(); 545 546 /* nonsense.. */ 547 if (args->uponly && args->downonly) 548 usage(); 549 550 /* no arguments is equivalent to '-a' */ 551 if (!args->namesonly && argc < 1) 552 args->all = 1; 553 554 /* -a and -l allow an address family arg to limit the output */ 555 if (args->all || args->namesonly) { 556 if (argc > 1) 557 usage(); 558 559 if (argc == 1) { 560 const struct afswtch *afp = af_getbyname(*argv); 561 562 if (afp == NULL) { 563 warnx("Address family '%s' unknown.", *argv); 564 usage(); 565 } 566 if (afp->af_name != NULL) 567 argc--, argv++; 568 /* leave with afp non-zero */ 569 args->afp = afp; 570 } 571 } else { 572 /* not listing, need an argument */ 573 if (argc < 1) 574 usage(); 575 } 576 577 args->argc = argc; 578 args->argv = argv; 579 } 580 581 static int 582 ifconfig(if_ctx *ctx, int iscreate, const struct afswtch *uafp) 583 { 584 #ifdef WITHOUT_NETLINK 585 return (ifconfig_ioctl(ctx, iscreate, uafp)); 586 #else 587 return (ifconfig_nl(ctx, iscreate, uafp)); 588 #endif 589 } 590 591 static bool 592 isargcreate(const char *arg) 593 { 594 if (arg == NULL) 595 return (false); 596 597 if (strcmp(arg, "create") == 0 || strcmp(arg, "plumb") == 0) 598 return (true); 599 600 return (false); 601 } 602 603 static bool 604 isnametoolong(const char *ifname) 605 { 606 return (strlen(ifname) >= IFNAMSIZ); 607 } 608 609 int 610 main(int ac, char *av[]) 611 { 612 char *envformat; 613 int flags; 614 #ifdef JAIL 615 int jid; 616 #endif 617 struct ifconfig_args _args = {}; 618 struct ifconfig_args *args = &_args; 619 620 struct ifconfig_context ctx = { 621 .args = args, 622 .io_s = -1, 623 }; 624 625 lifh = ifconfig_open(); 626 if (lifh == NULL) 627 err(EXIT_FAILURE, "ifconfig_open"); 628 629 envformat = getenv("IFCONFIG_FORMAT"); 630 if (envformat != NULL) 631 setformat(envformat); 632 633 /* 634 * Ensure we print interface name when expected to, 635 * even if we terminate early due to error. 636 */ 637 atexit(printifnamemaybe); 638 639 args_parse(args, ac, av); 640 641 #ifdef JAIL 642 if (args->jail_name) { 643 jid = jail_getid(args->jail_name); 644 if (jid == -1) 645 Perror("jail not found"); 646 if (jail_attach(jid) != 0) 647 Perror("cannot attach to jail"); 648 } 649 #endif 650 651 if (!args->all && !args->namesonly) { 652 /* not listing, need an argument */ 653 args->ifname = args_pop(args); 654 ctx.ifname = args->ifname; 655 656 /* check and maybe load support for this interface */ 657 ifmaybeload(args, args->ifname); 658 659 char *arg = args_peek(args); 660 if (if_nametoindex(args->ifname) == 0) { 661 /* 662 * NOTE: We must special-case the `create' command 663 * right here as we would otherwise fail when trying 664 * to find the interface. 665 */ 666 if (isargcreate(arg)) { 667 if (isnametoolong(args->ifname)) 668 errx(1, "%s: cloning name too long", 669 args->ifname); 670 ifconfig(&ctx, 1, NULL); 671 exit(exit_code); 672 } 673 #ifdef JAIL 674 /* 675 * NOTE: We have to special-case the `-vnet' command 676 * right here as we would otherwise fail when trying 677 * to find the interface as it lives in another vnet. 678 */ 679 if (arg != NULL && (strcmp(arg, "-vnet") == 0)) { 680 if (isnametoolong(args->ifname)) 681 errx(1, "%s: interface name too long", 682 args->ifname); 683 ifconfig(&ctx, 0, NULL); 684 exit(exit_code); 685 } 686 #endif 687 errx(1, "interface %s does not exist", args->ifname); 688 } else { 689 /* 690 * Do not allow use `create` command as hostname if 691 * address family is not specified. 692 */ 693 if (isargcreate(arg)) { 694 if (args->argc == 1) 695 errx(1, "interface %s already exists", 696 args->ifname); 697 args_pop(args); 698 } 699 } 700 } 701 702 /* Check for address family */ 703 if (args->argc > 0) { 704 args->afp = af_getbyname(args_peek(args)); 705 if (args->afp != NULL) 706 args_pop(args); 707 } 708 709 /* 710 * Check for a requested configuration action on a single interface, 711 * which doesn't require building, sorting, and searching the entire 712 * system address list 713 */ 714 if ((args->argc > 0) && (args->ifname != NULL)) { 715 if (isnametoolong(args->ifname)) 716 warnx("%s: interface name too long, skipping", args->ifname); 717 else { 718 flags = getifflags(args->ifname, -1, false); 719 if (!(((flags & IFF_CANTCONFIG) != 0) || 720 (args->downonly && (flags & IFF_UP) != 0) || 721 (args->uponly && (flags & IFF_UP) == 0))) 722 ifconfig(&ctx, 0, args->afp); 723 } 724 goto done; 725 } 726 727 args->allfamilies = args->afp == NULL; 728 729 list_interfaces(&ctx); 730 731 done: 732 freeformat(); 733 ifconfig_close(lifh); 734 exit(exit_code); 735 } 736 737 bool 738 match_ether(const struct sockaddr_dl *sdl) 739 { 740 switch (sdl->sdl_type) { 741 case IFT_ETHER: 742 case IFT_L2VLAN: 743 case IFT_BRIDGE: 744 if (sdl->sdl_alen == ETHER_ADDR_LEN) 745 return (true); 746 default: 747 return (false); 748 } 749 } 750 751 bool 752 match_if_flags(struct ifconfig_args *args, int if_flags) 753 { 754 if ((if_flags & IFF_CANTCONFIG) != 0) 755 return (false); 756 if (args->downonly && (if_flags & IFF_UP) != 0) 757 return (false); 758 if (args->uponly && (if_flags & IFF_UP) == 0) 759 return (false); 760 return (true); 761 } 762 763 #ifdef WITHOUT_NETLINK 764 static bool 765 match_afp(const struct afswtch *afp, int sa_family, const struct sockaddr_dl *sdl) 766 { 767 if (afp == NULL) 768 return (true); 769 /* special case for "ether" address family */ 770 if (!strcmp(afp->af_name, "ether")) { 771 if (sdl == NULL || !match_ether(sdl)) 772 return (false); 773 return (true); 774 } 775 return (afp->af_af == sa_family); 776 } 777 778 static void 779 list_interfaces_ioctl(if_ctx *ctx) 780 { 781 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q); 782 struct ifaddrs *ifap, *sifap, *ifa; 783 struct ifa_order_elt *cur, *tmp; 784 char *namecp = NULL; 785 int ifindex; 786 struct ifconfig_args *args = ctx->args; 787 788 if (getifaddrs(&ifap) != 0) 789 err(EXIT_FAILURE, "getifaddrs"); 790 791 char *cp = NULL; 792 793 if (calcorders(ifap, &q) != 0) 794 err(EXIT_FAILURE, "calcorders"); 795 796 sifap = sortifaddrs(ifap, cmpifaddrs, &q); 797 798 TAILQ_FOREACH_SAFE(cur, &q, link, tmp) 799 free(cur); 800 801 ifindex = 0; 802 for (ifa = sifap; ifa; ifa = ifa->ifa_next) { 803 struct ifreq paifr = {}; 804 const struct sockaddr_dl *sdl; 805 806 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name)); 807 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) { 808 memcpy(&paifr.ifr_addr, ifa->ifa_addr, 809 ifa->ifa_addr->sa_len); 810 } 811 812 if (args->ifname != NULL && strcmp(args->ifname, ifa->ifa_name) != 0) 813 continue; 814 if (ifa->ifa_addr->sa_family == AF_LINK) 815 sdl = satosdl_c(ifa->ifa_addr); 816 else 817 sdl = NULL; 818 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !args->namesonly) 819 continue; 820 if (isnametoolong(ifa->ifa_name)) { 821 warnx("%s: interface name too long, skipping", 822 ifa->ifa_name); 823 continue; 824 } 825 cp = ifa->ifa_name; 826 827 if (!match_if_flags(args, ifa->ifa_flags)) 828 continue; 829 if (!group_member(ifa->ifa_name, args->matchgroup, args->nogroup)) 830 continue; 831 ctx->ifname = cp; 832 /* 833 * Are we just listing the interfaces? 834 */ 835 if (args->namesonly) { 836 if (namecp == cp) 837 continue; 838 if (!match_afp(args->afp, ifa->ifa_addr->sa_family, sdl)) 839 continue; 840 namecp = cp; 841 ifindex++; 842 if (ifindex > 1) 843 printf(" "); 844 fputs(cp, stdout); 845 continue; 846 } 847 ifindex++; 848 849 if (args->argc > 0) 850 ifconfig(ctx, 0, args->afp); 851 else 852 status(ctx, sdl, ifa); 853 } 854 if (args->namesonly) 855 printf("\n"); 856 freeifaddrs(ifap); 857 } 858 #endif 859 860 /* 861 * Returns true if an interface should be listed because any its groups 862 * matches shell pattern "match" and none of groups matches pattern "nomatch". 863 * If any pattern is NULL, corresponding condition is skipped. 864 */ 865 bool 866 group_member(const char *ifname, const char *match, const char *nomatch) 867 { 868 static int sock = -1; 869 870 struct ifgroupreq ifgr; 871 struct ifg_req *ifg; 872 unsigned int len; 873 bool matched, nomatched; 874 875 /* Sanity checks. */ 876 if (match == NULL && nomatch == NULL) 877 return (true); 878 if (ifname == NULL) 879 return (false); 880 881 memset(&ifgr, 0, sizeof(ifgr)); 882 strlcpy(ifgr.ifgr_name, ifname, IFNAMSIZ); 883 884 /* The socket is opened once. Let _exit() close it. */ 885 if (sock == -1) { 886 sock = socket(AF_LOCAL, SOCK_DGRAM, 0); 887 if (sock == -1) 888 errx(1, "%s: socket(AF_LOCAL,SOCK_DGRAM)", __func__); 889 } 890 891 /* Determine amount of memory for the list of groups. */ 892 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) { 893 if (errno == EINVAL || errno == ENOTTY) 894 return (false); 895 else 896 errx(1, "%s: SIOCGIFGROUP", __func__); 897 } 898 899 /* Obtain the list of groups. */ 900 len = ifgr.ifgr_len; 901 ifgr.ifgr_groups = 902 (struct ifg_req *)calloc(len / sizeof(*ifg), sizeof(*ifg)); 903 904 if (ifgr.ifgr_groups == NULL) 905 errx(1, "%s: no memory", __func__); 906 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 907 errx(1, "%s: SIOCGIFGROUP", __func__); 908 909 /* Perform matching. */ 910 matched = false; 911 nomatched = true; 912 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(*ifg); ifg++) { 913 len -= sizeof(*ifg); 914 if (match && !matched) 915 matched = !fnmatch(match, ifg->ifgrq_group, 0); 916 if (nomatch && nomatched) 917 nomatched = fnmatch(nomatch, ifg->ifgrq_group, 0); 918 } 919 free(ifgr.ifgr_groups); 920 921 if (match && !nomatch) 922 return (matched); 923 if (!match && nomatch) 924 return (nomatched); 925 return (matched && nomatched); 926 } 927 928 static struct afswtch *afs = NULL; 929 930 void 931 af_register(struct afswtch *p) 932 { 933 p->af_next = afs; 934 afs = p; 935 } 936 937 static struct afswtch * 938 af_getbyname(const char *name) 939 { 940 struct afswtch *afp; 941 942 for (afp = afs; afp != NULL; afp = afp->af_next) 943 if (strcmp(afp->af_name, name) == 0) 944 return afp; 945 return NULL; 946 } 947 948 struct afswtch * 949 af_getbyfamily(int af) 950 { 951 struct afswtch *afp; 952 953 for (afp = afs; afp != NULL; afp = afp->af_next) 954 if (afp->af_af == af) 955 return afp; 956 return NULL; 957 } 958 959 void 960 af_other_status(if_ctx *ctx) 961 { 962 struct afswtch *afp; 963 uint8_t afmask[howmany(AF_MAX, NBBY)]; 964 965 memset(afmask, 0, sizeof(afmask)); 966 for (afp = afs; afp != NULL; afp = afp->af_next) { 967 if (afp->af_other_status == NULL) 968 continue; 969 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 970 continue; 971 afp->af_other_status(ctx); 972 setbit(afmask, afp->af_af); 973 } 974 } 975 976 static void 977 af_all_tunnel_status(if_ctx *ctx) 978 { 979 struct afswtch *afp; 980 uint8_t afmask[howmany(AF_MAX, NBBY)]; 981 982 memset(afmask, 0, sizeof(afmask)); 983 for (afp = afs; afp != NULL; afp = afp->af_next) { 984 if (afp->af_status_tunnel == NULL) 985 continue; 986 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 987 continue; 988 afp->af_status_tunnel(ctx); 989 setbit(afmask, afp->af_af); 990 } 991 } 992 993 static struct cmd *cmds = NULL; 994 995 void 996 cmd_register(struct cmd *p) 997 { 998 p->c_next = cmds; 999 cmds = p; 1000 } 1001 1002 static const struct cmd * 1003 cmd_lookup(const char *name, int iscreate) 1004 { 1005 const struct cmd *p; 1006 1007 for (p = cmds; p != NULL; p = p->c_next) 1008 if (strcmp(name, p->c_name) == 0) { 1009 if (iscreate) { 1010 if (p->c_iscloneop) 1011 return p; 1012 } else { 1013 if (!p->c_iscloneop) 1014 return p; 1015 } 1016 } 1017 return NULL; 1018 } 1019 1020 struct callback { 1021 callback_func *cb_func; 1022 void *cb_arg; 1023 struct callback *cb_next; 1024 }; 1025 static struct callback *callbacks = NULL; 1026 1027 void 1028 callback_register(callback_func *func, void *arg) 1029 { 1030 struct callback *cb; 1031 1032 cb = malloc(sizeof(struct callback)); 1033 if (cb == NULL) 1034 errx(1, "unable to allocate memory for callback"); 1035 cb->cb_func = func; 1036 cb->cb_arg = arg; 1037 cb->cb_next = callbacks; 1038 callbacks = cb; 1039 } 1040 1041 /* specially-handled commands */ 1042 static void setifaddr(if_ctx *ctx, const char *addr, int param); 1043 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr); 1044 1045 static void setifdstaddr(if_ctx *ctx, const char *addr, int param __unused); 1046 static const struct cmd setifdstaddr_cmd = 1047 DEF_CMD("ifdstaddr", 0, setifdstaddr); 1048 1049 int 1050 af_exec_ioctl(if_ctx *ctx, unsigned long action, void *data) 1051 { 1052 struct ifreq *req = (struct ifreq *)data; 1053 1054 strlcpy(req->ifr_name, ctx->ifname, sizeof(req->ifr_name)); 1055 if (ioctl_ctx(ctx, action, req) == 0) 1056 return (0); 1057 return (errno); 1058 } 1059 1060 static void 1061 delifaddr(if_ctx *ctx, const struct afswtch *afp) 1062 { 1063 int error; 1064 1065 if (afp->af_exec == NULL) { 1066 warnx("interface %s cannot change %s addresses!", 1067 ctx->ifname, afp->af_name); 1068 clearaddr = 0; 1069 return; 1070 } 1071 1072 error = afp->af_exec(ctx, afp->af_difaddr, afp->af_ridreq); 1073 if (error != 0) { 1074 if (error == EADDRNOTAVAIL && (doalias >= 0)) { 1075 /* means no previous address for interface */ 1076 } else 1077 Perrorc("ioctl (SIOCDIFADDR)", error); 1078 } 1079 } 1080 1081 static void 1082 addifaddr(if_ctx *ctx, const struct afswtch *afp) 1083 { 1084 if (afp->af_exec == NULL) { 1085 warnx("interface %s cannot change %s addresses!", 1086 ctx->ifname, afp->af_name); 1087 newaddr = 0; 1088 return; 1089 } 1090 1091 if (setaddr || setmask) { 1092 int error = afp->af_exec(ctx, afp->af_aifaddr, afp->af_addreq); 1093 if (error != 0) 1094 Perrorc("ioctl (SIOCAIFADDR)", error); 1095 } 1096 } 1097 1098 int 1099 ifconfig_ioctl(if_ctx *orig_ctx, int iscreate, const struct afswtch *uafp) 1100 { 1101 const struct afswtch *afp, *nafp; 1102 const struct cmd *p; 1103 struct callback *cb; 1104 int s; 1105 int argc = orig_ctx->args->argc; 1106 char *const *argv = orig_ctx->args->argv; 1107 struct ifconfig_context _ctx = { 1108 .args = orig_ctx->args, 1109 .io_ss = orig_ctx->io_ss, 1110 .ifname = orig_ctx->ifname, 1111 }; 1112 struct ifconfig_context *ctx = &_ctx; 1113 1114 struct ifreq ifr = {}; 1115 strlcpy(ifr.ifr_name, ctx->ifname, sizeof ifr.ifr_name); 1116 afp = NULL; 1117 if (uafp != NULL) 1118 afp = uafp; 1119 /* 1120 * This is the historical "accident" allowing users to configure IPv4 1121 * addresses without the "inet" keyword which while a nice feature has 1122 * proven to complicate other things. We cannot remove this but only 1123 * make sure we will never have a similar implicit default for IPv6 or 1124 * any other address familiy. We need a fallback though for 1125 * ifconfig IF up/down etc. to work without INET support as people 1126 * never used ifconfig IF link up/down, etc. either. 1127 */ 1128 #ifndef RESCUE 1129 #ifdef INET 1130 if (afp == NULL && feature_present("inet")) 1131 afp = af_getbyname("inet"); 1132 #endif 1133 #endif 1134 if (afp == NULL) 1135 afp = af_getbyname("link"); 1136 if (afp == NULL) { 1137 warnx("Please specify an address_family."); 1138 usage(); 1139 } 1140 1141 top: 1142 ifr.ifr_addr.sa_family = 1143 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ? 1144 AF_LOCAL : afp->af_af; 1145 1146 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 && 1147 (uafp != NULL || errno != EAFNOSUPPORT || 1148 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)) 1149 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1150 1151 ctx->io_s = s; 1152 ctx->afp = afp; 1153 1154 while (argc > 0) { 1155 p = cmd_lookup(*argv, iscreate); 1156 if (iscreate && p == NULL) { 1157 /* 1158 * Push the clone create callback so the new 1159 * device is created and can be used for any 1160 * remaining arguments. 1161 */ 1162 cb = callbacks; 1163 if (cb == NULL) 1164 errx(1, "internal error, no callback"); 1165 callbacks = cb->cb_next; 1166 cb->cb_func(ctx, cb->cb_arg); 1167 iscreate = 0; 1168 /* 1169 * Handle any address family spec that 1170 * immediately follows and potentially 1171 * recreate the socket. 1172 */ 1173 nafp = af_getbyname(*argv); 1174 if (nafp != NULL) { 1175 argc--, argv++; 1176 if (nafp != afp) { 1177 close(s); 1178 afp = nafp; 1179 goto top; 1180 } 1181 } 1182 /* 1183 * Look for a normal parameter. 1184 */ 1185 continue; 1186 } 1187 if (p == NULL) { 1188 /* 1189 * Not a recognized command, choose between setting 1190 * the interface address and the dst address. 1191 */ 1192 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd); 1193 } 1194 if (p->c_parameter == NEXTARG && p->c_u.c_func) { 1195 if (argv[1] == NULL) 1196 errx(1, "'%s' requires argument", 1197 p->c_name); 1198 p->c_u.c_func(ctx, argv[1], 0); 1199 argc--, argv++; 1200 } else if (p->c_parameter == OPTARG && p->c_u.c_func) { 1201 p->c_u.c_func(ctx, argv[1], 0); 1202 if (argv[1] != NULL) 1203 argc--, argv++; 1204 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) { 1205 if (argc < 3) 1206 errx(1, "'%s' requires 2 arguments", 1207 p->c_name); 1208 p->c_u.c_func2(ctx, argv[1], argv[2]); 1209 argc -= 2, argv += 2; 1210 } else if (p->c_parameter == SPARAM && p->c_u.c_func3) { 1211 p->c_u.c_func3(ctx, *argv, p->c_sparameter); 1212 } else if (p->c_u.c_func) 1213 p->c_u.c_func(ctx, *argv, p->c_parameter); 1214 argc--, argv++; 1215 } 1216 1217 /* 1218 * Do any post argument processing required by the address family. 1219 */ 1220 if (afp->af_postproc != NULL) 1221 afp->af_postproc(ctx, newaddr, getifflags(ctx->ifname, s, true)); 1222 /* 1223 * Do deferred callbacks registered while processing 1224 * command-line arguments. 1225 */ 1226 for (cb = callbacks; cb != NULL; cb = cb->cb_next) 1227 cb->cb_func(ctx, cb->cb_arg); 1228 /* 1229 * Do deferred operations. 1230 */ 1231 if (clearaddr) 1232 delifaddr(ctx, afp); 1233 if (newaddr) 1234 addifaddr(ctx, afp); 1235 1236 close(s); 1237 return(0); 1238 } 1239 1240 static void 1241 setifaddr(if_ctx *ctx, const char *addr, int param __unused) 1242 { 1243 const struct afswtch *afp = ctx->afp; 1244 1245 if (afp->af_getaddr == NULL) 1246 return; 1247 /* 1248 * Delay the ioctl to set the interface addr until flags are all set. 1249 * The address interpretation may depend on the flags, 1250 * and the flags may change when the address is set. 1251 */ 1252 setaddr++; 1253 if (doalias == 0 && afp->af_af != AF_LINK) 1254 clearaddr = 1; 1255 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR)); 1256 } 1257 1258 static void 1259 settunnel(if_ctx *ctx, const char *src, const char *dst) 1260 { 1261 const struct afswtch *afp = ctx->afp; 1262 struct addrinfo *srcres, *dstres; 1263 int ecode; 1264 1265 if (afp->af_settunnel == NULL) { 1266 warn("address family %s does not support tunnel setup", 1267 afp->af_name); 1268 return; 1269 } 1270 1271 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0) 1272 errx(1, "error in parsing address string: %s", 1273 gai_strerror(ecode)); 1274 1275 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0) 1276 errx(1, "error in parsing address string: %s", 1277 gai_strerror(ecode)); 1278 1279 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family) 1280 errx(1, 1281 "source and destination address families do not match"); 1282 1283 afp->af_settunnel(ctx, srcres, dstres); 1284 1285 freeaddrinfo(srcres); 1286 freeaddrinfo(dstres); 1287 } 1288 1289 static void 1290 deletetunnel(if_ctx *ctx, const char *vname __unused, int param __unused) 1291 { 1292 struct ifreq ifr = {}; 1293 1294 if (ioctl_ctx_ifr(ctx, SIOCDIFPHYADDR, &ifr) < 0) 1295 err(1, "SIOCDIFPHYADDR"); 1296 } 1297 1298 #ifdef JAIL 1299 static void 1300 setifvnet(if_ctx *ctx, const char *jname, int dummy __unused) 1301 { 1302 struct ifreq ifr = {}; 1303 1304 ifr.ifr_jid = jail_getid(jname); 1305 if (ifr.ifr_jid < 0) 1306 errx(1, "%s", jail_errmsg); 1307 if (ioctl_ctx_ifr(ctx, SIOCSIFVNET, &ifr) < 0) 1308 err(1, "SIOCSIFVNET"); 1309 } 1310 1311 static void 1312 setifrvnet(if_ctx *ctx, const char *jname, int dummy __unused) 1313 { 1314 struct ifreq ifr = {}; 1315 1316 ifr.ifr_jid = jail_getid(jname); 1317 if (ifr.ifr_jid < 0) 1318 errx(1, "%s", jail_errmsg); 1319 if (ioctl_ctx_ifr(ctx, SIOCSIFRVNET, &ifr) < 0) 1320 err(1, "SIOCSIFRVNET(%d, %s)", ifr.ifr_jid, ifr.ifr_name); 1321 } 1322 #endif 1323 1324 static void 1325 setifnetmask(if_ctx *ctx, const char *addr, int dummy __unused) 1326 { 1327 const struct afswtch *afp = ctx->afp; 1328 1329 if (afp->af_getaddr != NULL) { 1330 setmask++; 1331 afp->af_getaddr(addr, MASK); 1332 } 1333 } 1334 1335 static void 1336 setifbroadaddr(if_ctx *ctx, const char *addr, int dummy __unused) 1337 { 1338 const struct afswtch *afp = ctx->afp; 1339 1340 if (afp->af_getaddr != NULL) 1341 afp->af_getaddr(addr, BRDADDR); 1342 } 1343 1344 static void 1345 notealias(if_ctx *ctx, const char *addr __unused, int param) 1346 { 1347 const struct afswtch *afp = ctx->afp; 1348 1349 if (setaddr && doalias == 0 && param < 0) { 1350 if (afp->af_copyaddr != NULL) 1351 afp->af_copyaddr(ctx, RIDADDR, ADDR); 1352 } 1353 doalias = param; 1354 if (param < 0) { 1355 clearaddr = 1; 1356 newaddr = 0; 1357 } else 1358 clearaddr = 0; 1359 } 1360 1361 static void 1362 setifdstaddr(if_ctx *ctx, const char *addr, int param __unused) 1363 { 1364 const struct afswtch *afp = ctx->afp; 1365 1366 if (afp->af_getaddr != NULL) 1367 afp->af_getaddr(addr, DSTADDR); 1368 } 1369 1370 static int 1371 getifflags(const char *ifname, int us, bool err_ok) 1372 { 1373 struct ifreq my_ifr; 1374 int s; 1375 1376 memset(&my_ifr, 0, sizeof(my_ifr)); 1377 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name)); 1378 if (us < 0) { 1379 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) 1380 err(1, "socket(family AF_LOCAL,SOCK_DGRAM"); 1381 } else 1382 s = us; 1383 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { 1384 if (!err_ok) { 1385 Perror("ioctl (SIOCGIFFLAGS)"); 1386 exit(1); 1387 } 1388 } 1389 if (us < 0) 1390 close(s); 1391 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16)); 1392 } 1393 1394 /* 1395 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion 1396 * of the ifreq structure, which may confuse other parts of ifconfig. 1397 * Make a private copy so we can avoid that. 1398 */ 1399 static void 1400 clearifflags(if_ctx *ctx, const char *vname, int value) 1401 { 1402 struct ifreq my_ifr; 1403 int flags; 1404 1405 flags = getifflags(ctx->ifname, ctx->io_s, false); 1406 flags &= ~value; 1407 memset(&my_ifr, 0, sizeof(my_ifr)); 1408 strlcpy(my_ifr.ifr_name, ctx->ifname, sizeof(my_ifr.ifr_name)); 1409 my_ifr.ifr_flags = flags & 0xffff; 1410 my_ifr.ifr_flagshigh = flags >> 16; 1411 if (ioctl(ctx->io_s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1412 Perror(vname); 1413 } 1414 1415 static void 1416 setifflags(if_ctx *ctx, const char *vname, int value) 1417 { 1418 struct ifreq my_ifr; 1419 int flags; 1420 1421 flags = getifflags(ctx->ifname, ctx->io_s, false); 1422 flags |= value; 1423 memset(&my_ifr, 0, sizeof(my_ifr)); 1424 strlcpy(my_ifr.ifr_name, ctx->ifname, sizeof(my_ifr.ifr_name)); 1425 my_ifr.ifr_flags = flags & 0xffff; 1426 my_ifr.ifr_flagshigh = flags >> 16; 1427 if (ioctl(ctx->io_s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1428 Perror(vname); 1429 } 1430 1431 void 1432 clearifcap(if_ctx *ctx, const char *vname, int value) 1433 { 1434 struct ifreq ifr = {}; 1435 int flags; 1436 1437 if (ioctl_ctx_ifr(ctx, SIOCGIFCAP, &ifr) < 0) { 1438 Perror("ioctl (SIOCGIFCAP)"); 1439 exit(1); 1440 } 1441 flags = ifr.ifr_curcap; 1442 flags &= ~value; 1443 flags &= ifr.ifr_reqcap; 1444 /* Check for no change in capabilities. */ 1445 if (ifr.ifr_curcap == flags) 1446 return; 1447 ifr.ifr_reqcap = flags; 1448 if (ioctl_ctx(ctx, SIOCSIFCAP, &ifr) < 0) 1449 Perror(vname); 1450 } 1451 1452 void 1453 setifcap(if_ctx *ctx, const char *vname, int value) 1454 { 1455 struct ifreq ifr = {}; 1456 int flags; 1457 1458 if (ioctl_ctx_ifr(ctx, SIOCGIFCAP, &ifr) < 0) { 1459 Perror("ioctl (SIOCGIFCAP)"); 1460 exit(1); 1461 } 1462 flags = ifr.ifr_curcap; 1463 flags |= value; 1464 flags &= ifr.ifr_reqcap; 1465 /* Check for no change in capabilities. */ 1466 if (ifr.ifr_curcap == flags) 1467 return; 1468 ifr.ifr_reqcap = flags; 1469 if (ioctl_ctx(ctx, SIOCSIFCAP, &ifr) < 0) 1470 Perror(vname); 1471 } 1472 1473 void 1474 setifcapnv(if_ctx *ctx, const char *vname, const char *arg) 1475 { 1476 nvlist_t *nvcap; 1477 void *buf; 1478 char *marg, *mopt; 1479 size_t nvbuflen; 1480 bool neg; 1481 struct ifreq ifr = {}; 1482 1483 if (ioctl_ctx_ifr(ctx, SIOCGIFCAP, &ifr) < 0) 1484 Perror("ioctl (SIOCGIFCAP)"); 1485 if ((ifr.ifr_curcap & IFCAP_NV) == 0) { 1486 warnx("IFCAP_NV not supported"); 1487 return; /* Not exit() */ 1488 } 1489 1490 marg = strdup(arg); 1491 if (marg == NULL) 1492 Perror("strdup"); 1493 nvcap = nvlist_create(0); 1494 if (nvcap == NULL) 1495 Perror("nvlist_create"); 1496 while ((mopt = strsep(&marg, ",")) != NULL) { 1497 neg = *mopt == '-'; 1498 if (neg) 1499 mopt++; 1500 if (strcmp(mopt, "rxtls") == 0) { 1501 nvlist_add_bool(nvcap, "rxtls4", !neg); 1502 nvlist_add_bool(nvcap, "rxtls6", !neg); 1503 } else { 1504 nvlist_add_bool(nvcap, mopt, !neg); 1505 } 1506 } 1507 buf = nvlist_pack(nvcap, &nvbuflen); 1508 if (buf == NULL) { 1509 errx(1, "nvlist_pack error"); 1510 exit(1); 1511 } 1512 ifr.ifr_cap_nv.buf_length = ifr.ifr_cap_nv.length = nvbuflen; 1513 ifr.ifr_cap_nv.buffer = buf; 1514 if (ioctl_ctx(ctx, SIOCSIFCAPNV, (caddr_t)&ifr) < 0) 1515 Perror(vname); 1516 free(buf); 1517 nvlist_destroy(nvcap); 1518 free(marg); 1519 } 1520 1521 static void 1522 setifmetric(if_ctx *ctx, const char *val, int dummy __unused) 1523 { 1524 struct ifreq ifr = {}; 1525 1526 ifr.ifr_metric = atoi(val); 1527 if (ioctl_ctx_ifr(ctx, SIOCSIFMETRIC, &ifr) < 0) 1528 err(1, "ioctl SIOCSIFMETRIC (set metric)"); 1529 } 1530 1531 static void 1532 setifmtu(if_ctx *ctx, const char *val, int dummy __unused) 1533 { 1534 struct ifreq ifr = {}; 1535 1536 ifr.ifr_mtu = atoi(val); 1537 if (ioctl_ctx_ifr(ctx, SIOCSIFMTU, &ifr) < 0) 1538 err(1, "ioctl SIOCSIFMTU (set mtu)"); 1539 } 1540 1541 static void 1542 setifpcp(if_ctx *ctx, const char *val, int arg __unused) 1543 { 1544 struct ifreq ifr = {}; 1545 u_long ul; 1546 char *endp; 1547 1548 ul = strtoul(val, &endp, 0); 1549 if (*endp != '\0') 1550 errx(1, "invalid value for pcp"); 1551 if (ul > 7) 1552 errx(1, "value for pcp out of range"); 1553 ifr.ifr_lan_pcp = ul; 1554 if (ioctl_ctx_ifr(ctx, SIOCSLANPCP, &ifr) == -1) 1555 err(1, "SIOCSLANPCP"); 1556 } 1557 1558 static void 1559 disableifpcp(if_ctx *ctx, const char *val __unused, int arg __unused) 1560 { 1561 struct ifreq ifr = {}; 1562 1563 ifr.ifr_lan_pcp = IFNET_PCP_NONE; 1564 if (ioctl_ctx_ifr(ctx, SIOCSLANPCP, &ifr) == -1) 1565 err(1, "SIOCSLANPCP"); 1566 } 1567 1568 static void 1569 setifname(if_ctx *ctx, const char *val, int dummy __unused) 1570 { 1571 struct ifreq ifr = {}; 1572 char *newname; 1573 1574 ifr_set_name(&ifr, ctx->ifname); 1575 newname = strdup(val); 1576 if (newname == NULL) 1577 err(1, "no memory to set ifname"); 1578 ifr.ifr_data = newname; 1579 if (ioctl_ctx(ctx, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 1580 free(newname); 1581 err(1, "ioctl SIOCSIFNAME (set name)"); 1582 } 1583 ifname_update(ctx, newname); 1584 free(newname); 1585 } 1586 1587 static void 1588 setifdescr(if_ctx *ctx, const char *val, int dummy __unused) 1589 { 1590 struct ifreq ifr = {}; 1591 char *newdescr; 1592 1593 ifr.ifr_buffer.length = strlen(val) + 1; 1594 if (ifr.ifr_buffer.length == 1) { 1595 ifr.ifr_buffer.buffer = newdescr = NULL; 1596 ifr.ifr_buffer.length = 0; 1597 } else { 1598 newdescr = strdup(val); 1599 ifr.ifr_buffer.buffer = newdescr; 1600 if (newdescr == NULL) { 1601 warn("no memory to set ifdescr"); 1602 return; 1603 } 1604 } 1605 1606 if (ioctl_ctx_ifr(ctx, SIOCSIFDESCR, &ifr) < 0) 1607 err(1, "ioctl SIOCSIFDESCR (set descr)"); 1608 1609 free(newdescr); 1610 } 1611 1612 static void 1613 unsetifdescr(if_ctx *ctx, const char *val __unused, int value __unused) 1614 { 1615 setifdescr(ctx, "", 0); 1616 } 1617 1618 #ifdef WITHOUT_NETLINK 1619 1620 #define IFFBITS \ 1621 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \ 1622 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \ 1623 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP\25STICKYARP" 1624 1625 #define IFCAPBITS \ 1626 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \ 1627 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \ 1628 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \ 1629 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP\33NOMAP\34TXTLS4\35TXTLS6" \ 1630 "\36VXLAN_HWCSUM\37VXLAN_HWTSO\40TXTLS_RTLMT" 1631 1632 static void 1633 print_ifcap_nv(if_ctx *ctx) 1634 { 1635 struct ifreq ifr = {}; 1636 nvlist_t *nvcap; 1637 const char *nvname; 1638 void *buf, *cookie; 1639 bool first, val; 1640 int type; 1641 1642 buf = malloc(IFR_CAP_NV_MAXBUFSIZE); 1643 if (buf == NULL) 1644 Perror("malloc"); 1645 ifr.ifr_cap_nv.buffer = buf; 1646 ifr.ifr_cap_nv.buf_length = IFR_CAP_NV_MAXBUFSIZE; 1647 if (ioctl_ctx_ifr(ctx, SIOCGIFCAPNV, &ifr) != 0) 1648 Perror("ioctl (SIOCGIFCAPNV)"); 1649 nvcap = nvlist_unpack(ifr.ifr_cap_nv.buffer, 1650 ifr.ifr_cap_nv.length, 0); 1651 if (nvcap == NULL) 1652 Perror("nvlist_unpack"); 1653 printf("\toptions"); 1654 cookie = NULL; 1655 for (first = true;; first = false) { 1656 nvname = nvlist_next(nvcap, &type, &cookie); 1657 if (nvname == NULL) { 1658 printf("\n"); 1659 break; 1660 } 1661 if (type == NV_TYPE_BOOL) { 1662 val = nvlist_get_bool(nvcap, nvname); 1663 if (val) { 1664 printf("%c%s", 1665 first ? ' ' : ',', nvname); 1666 } 1667 } 1668 } 1669 if (ctx->args->supmedia) { 1670 printf("\tcapabilities"); 1671 cookie = NULL; 1672 for (first = true;; first = false) { 1673 nvname = nvlist_next(nvcap, &type, 1674 &cookie); 1675 if (nvname == NULL) { 1676 printf("\n"); 1677 break; 1678 } 1679 if (type == NV_TYPE_BOOL) 1680 printf("%c%s", first ? ' ' : 1681 ',', nvname); 1682 } 1683 } 1684 nvlist_destroy(nvcap); 1685 free(buf); 1686 1687 if (ioctl_ctx(ctx, SIOCGIFCAP, (caddr_t)&ifr) != 0) 1688 Perror("ioctl (SIOCGIFCAP)"); 1689 } 1690 1691 static void 1692 print_ifcap(if_ctx *ctx) 1693 { 1694 struct ifreq ifr = {}; 1695 1696 if (ioctl_ctx_ifr(ctx, SIOCGIFCAP, &ifr) != 0) 1697 return; 1698 1699 if ((ifr.ifr_curcap & IFCAP_NV) != 0) 1700 print_ifcap_nv(ctx); 1701 else { 1702 printb("\toptions", ifr.ifr_curcap, IFCAPBITS); 1703 putchar('\n'); 1704 if (ctx->args->supmedia && ifr.ifr_reqcap != 0) { 1705 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS); 1706 putchar('\n'); 1707 } 1708 } 1709 } 1710 #endif 1711 1712 void 1713 print_ifstatus(if_ctx *ctx) 1714 { 1715 struct ifstat ifs; 1716 1717 strlcpy(ifs.ifs_name, ctx->ifname, sizeof ifs.ifs_name); 1718 if (ioctl_ctx(ctx, SIOCGIFSTATUS, &ifs) == 0) 1719 printf("%s", ifs.ascii); 1720 } 1721 1722 void 1723 print_metric(if_ctx *ctx) 1724 { 1725 struct ifreq ifr = {}; 1726 1727 if (ioctl_ctx_ifr(ctx, SIOCGIFMETRIC, &ifr) != -1) 1728 printf(" metric %d", ifr.ifr_metric); 1729 } 1730 1731 #ifdef WITHOUT_NETLINK 1732 static void 1733 print_mtu(if_ctx *ctx) 1734 { 1735 struct ifreq ifr = {}; 1736 1737 if (ioctl_ctx_ifr(ctx, SIOCGIFMTU, &ifr) != -1) 1738 printf(" mtu %d", ifr.ifr_mtu); 1739 } 1740 1741 static void 1742 print_description(if_ctx *ctx) 1743 { 1744 struct ifreq ifr = {}; 1745 1746 ifr_set_name(&ifr, ctx->ifname); 1747 for (;;) { 1748 if ((descr = reallocf(descr, descrlen)) != NULL) { 1749 ifr.ifr_buffer.buffer = descr; 1750 ifr.ifr_buffer.length = descrlen; 1751 if (ioctl_ctx(ctx, SIOCGIFDESCR, &ifr) == 0) { 1752 if (ifr.ifr_buffer.buffer == descr) { 1753 if (strlen(descr) > 0) 1754 printf("\tdescription: %s\n", 1755 descr); 1756 } else if (ifr.ifr_buffer.length > descrlen) { 1757 descrlen = ifr.ifr_buffer.length; 1758 continue; 1759 } 1760 } 1761 } else 1762 warn("unable to allocate memory for interface" 1763 "description"); 1764 break; 1765 } 1766 } 1767 1768 /* 1769 * Print the status of the interface. If an address family was 1770 * specified, show only it; otherwise, show them all. 1771 */ 1772 static void 1773 status(if_ctx *ctx, const struct sockaddr_dl *sdl __unused, struct ifaddrs *ifa) 1774 { 1775 struct ifaddrs *ift; 1776 int s, old_s; 1777 struct ifconfig_args *args = ctx->args; 1778 bool allfamilies = args->afp == NULL; 1779 struct ifreq ifr = {}; 1780 1781 if (args->afp == NULL) 1782 ifr.ifr_addr.sa_family = AF_LOCAL; 1783 else 1784 ifr.ifr_addr.sa_family = 1785 args->afp->af_af == AF_LINK ? AF_LOCAL : args->afp->af_af; 1786 1787 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); 1788 if (s < 0) 1789 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1790 old_s = ctx->io_s; 1791 ctx->io_s = s; 1792 1793 printf("%s: ", ctx->ifname); 1794 printb("flags", ifa->ifa_flags, IFFBITS); 1795 print_metric(ctx); 1796 print_mtu(ctx); 1797 putchar('\n'); 1798 1799 print_description(ctx); 1800 1801 print_ifcap(ctx); 1802 1803 tunnel_status(ctx); 1804 1805 for (ift = ifa; ift != NULL; ift = ift->ifa_next) { 1806 if (ift->ifa_addr == NULL) 1807 continue; 1808 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0) 1809 continue; 1810 if (allfamilies) { 1811 const struct afswtch *p; 1812 p = af_getbyfamily(ift->ifa_addr->sa_family); 1813 if (p != NULL && p->af_status != NULL) 1814 p->af_status(ctx, ift); 1815 } else if (args->afp->af_af == ift->ifa_addr->sa_family) 1816 args->afp->af_status(ctx, ift); 1817 } 1818 #if 0 1819 if (allfamilies || afp->af_af == AF_LINK) { 1820 const struct afswtch *lafp; 1821 1822 /* 1823 * Hack; the link level address is received separately 1824 * from the routing information so any address is not 1825 * handled above. Cobble together an entry and invoke 1826 * the status method specially. 1827 */ 1828 lafp = af_getbyname("lladdr"); 1829 if (lafp != NULL) { 1830 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl; 1831 lafp->af_status(s, &info); 1832 } 1833 } 1834 #endif 1835 if (allfamilies) 1836 af_other_status(ctx); 1837 else if (args->afp->af_other_status != NULL) 1838 args->afp->af_other_status(ctx); 1839 1840 print_ifstatus(ctx); 1841 if (args->verbose > 0) 1842 sfp_status(ctx); 1843 1844 close(s); 1845 ctx->io_s = old_s; 1846 return; 1847 } 1848 #endif 1849 1850 void 1851 tunnel_status(if_ctx *ctx) 1852 { 1853 af_all_tunnel_status(ctx); 1854 } 1855 1856 static void 1857 Perrorc(const char *cmd, int error) 1858 { 1859 switch (errno) { 1860 1861 case ENXIO: 1862 errx(1, "%s: no such interface", cmd); 1863 break; 1864 1865 case EPERM: 1866 errx(1, "%s: permission denied", cmd); 1867 break; 1868 1869 default: 1870 errc(1, error, "%s", cmd); 1871 } 1872 } 1873 1874 void 1875 Perror(const char *cmd) 1876 { 1877 Perrorc(cmd, errno); 1878 } 1879 1880 /* 1881 * Print a value a la the %b format of the kernel's printf 1882 */ 1883 void 1884 printb(const char *s, unsigned v, const char *bits) 1885 { 1886 int i, any = 0; 1887 char c; 1888 1889 if (bits && *bits == 8) 1890 printf("%s=%o", s, v); 1891 else 1892 printf("%s=%x", s, v); 1893 if (bits) { 1894 bits++; 1895 putchar('<'); 1896 while ((i = *bits++) != '\0') { 1897 if (v & (1u << (i-1))) { 1898 if (any) 1899 putchar(','); 1900 any = 1; 1901 for (; (c = *bits) > 32; bits++) 1902 putchar(c); 1903 } else 1904 for (; *bits > 32; bits++) 1905 ; 1906 } 1907 putchar('>'); 1908 } 1909 } 1910 1911 void 1912 print_vhid(const struct ifaddrs *ifa) 1913 { 1914 struct if_data *ifd; 1915 1916 if (ifa->ifa_data == NULL) 1917 return; 1918 1919 ifd = ifa->ifa_data; 1920 if (ifd->ifi_vhid == 0) 1921 return; 1922 1923 printf(" vhid %d", ifd->ifi_vhid); 1924 } 1925 1926 void 1927 ifmaybeload(struct ifconfig_args *args, const char *name) 1928 { 1929 #define MOD_PREFIX_LEN 3 /* "if_" */ 1930 struct module_stat mstat; 1931 int fileid, modid; 1932 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp; 1933 const char *cp; 1934 struct module_map_entry *mme; 1935 bool found; 1936 1937 /* loading suppressed by the user */ 1938 if (args->noload) 1939 return; 1940 1941 /* trim the interface number off the end */ 1942 strlcpy(ifname, name, sizeof(ifname)); 1943 dp = ifname + strlen(ifname) - 1; 1944 for (; dp > ifname; dp--) { 1945 if (isdigit(*dp)) 1946 *dp = '\0'; 1947 else 1948 break; 1949 } 1950 1951 /* Either derive it from the map or guess otherwise */ 1952 *ifkind = '\0'; 1953 found = false; 1954 for (unsigned i = 0; i < nitems(module_map); ++i) { 1955 mme = &module_map[i]; 1956 if (strcmp(mme->ifname, ifname) == 0) { 1957 strlcpy(ifkind, mme->kldname, sizeof(ifkind)); 1958 found = true; 1959 break; 1960 } 1961 } 1962 1963 /* We didn't have an alias for it... we'll guess. */ 1964 if (!found) { 1965 /* turn interface and unit into module name */ 1966 strlcpy(ifkind, "if_", sizeof(ifkind)); 1967 strlcat(ifkind, ifname, sizeof(ifkind)); 1968 } 1969 1970 /* scan files in kernel */ 1971 mstat.version = sizeof(struct module_stat); 1972 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) { 1973 /* scan modules in file */ 1974 for (modid = kldfirstmod(fileid); modid > 0; 1975 modid = modfnext(modid)) { 1976 if (modstat(modid, &mstat) < 0) 1977 continue; 1978 /* strip bus name if present */ 1979 if ((cp = strchr(mstat.name, '/')) != NULL) { 1980 cp++; 1981 } else { 1982 cp = mstat.name; 1983 } 1984 /* 1985 * Is it already loaded? Don't compare with ifname if 1986 * we were specifically told which kld to use. Doing 1987 * so could lead to conflicts not trivially solved. 1988 */ 1989 if ((!found && strcmp(ifname, cp) == 0) || 1990 strcmp(ifkind, cp) == 0) 1991 return; 1992 } 1993 } 1994 1995 /* 1996 * Try to load the module. But ignore failures, because ifconfig can't 1997 * infer the names of all drivers (eg mlx4en(4)). 1998 */ 1999 (void) kldload(ifkind); 2000 } 2001 2002 static struct cmd basic_cmds[] = { 2003 DEF_CMD("up", IFF_UP, setifflags), 2004 DEF_CMD("down", IFF_UP, clearifflags), 2005 DEF_CMD("arp", IFF_NOARP, clearifflags), 2006 DEF_CMD("-arp", IFF_NOARP, setifflags), 2007 DEF_CMD("debug", IFF_DEBUG, setifflags), 2008 DEF_CMD("-debug", IFF_DEBUG, clearifflags), 2009 DEF_CMD_ARG("description", setifdescr), 2010 DEF_CMD_ARG("descr", setifdescr), 2011 DEF_CMD("-description", 0, unsetifdescr), 2012 DEF_CMD("-descr", 0, unsetifdescr), 2013 DEF_CMD("promisc", IFF_PPROMISC, setifflags), 2014 DEF_CMD("-promisc", IFF_PPROMISC, clearifflags), 2015 DEF_CMD("add", IFF_UP, notealias), 2016 DEF_CMD("alias", IFF_UP, notealias), 2017 DEF_CMD("-alias", -IFF_UP, notealias), 2018 DEF_CMD("delete", -IFF_UP, notealias), 2019 DEF_CMD("remove", -IFF_UP, notealias), 2020 #ifdef notdef 2021 #define EN_SWABIPS 0x1000 2022 DEF_CMD("swabips", EN_SWABIPS, setifflags), 2023 DEF_CMD("-swabips", EN_SWABIPS, clearifflags), 2024 #endif 2025 DEF_CMD_ARG("netmask", setifnetmask), 2026 DEF_CMD_ARG("metric", setifmetric), 2027 DEF_CMD_ARG("broadcast", setifbroadaddr), 2028 DEF_CMD_ARG2("tunnel", settunnel), 2029 DEF_CMD("-tunnel", 0, deletetunnel), 2030 DEF_CMD("deletetunnel", 0, deletetunnel), 2031 #ifdef JAIL 2032 DEF_CMD_ARG("vnet", setifvnet), 2033 DEF_CMD_ARG("-vnet", setifrvnet), 2034 #endif 2035 DEF_CMD("link0", IFF_LINK0, setifflags), 2036 DEF_CMD("-link0", IFF_LINK0, clearifflags), 2037 DEF_CMD("link1", IFF_LINK1, setifflags), 2038 DEF_CMD("-link1", IFF_LINK1, clearifflags), 2039 DEF_CMD("link2", IFF_LINK2, setifflags), 2040 DEF_CMD("-link2", IFF_LINK2, clearifflags), 2041 DEF_CMD("monitor", IFF_MONITOR, setifflags), 2042 DEF_CMD("-monitor", IFF_MONITOR, clearifflags), 2043 DEF_CMD("mextpg", IFCAP_MEXTPG, setifcap), 2044 DEF_CMD("-mextpg", IFCAP_MEXTPG, clearifcap), 2045 DEF_CMD("staticarp", IFF_STATICARP, setifflags), 2046 DEF_CMD("-staticarp", IFF_STATICARP, clearifflags), 2047 DEF_CMD("stickyarp", IFF_STICKYARP, setifflags), 2048 DEF_CMD("-stickyarp", IFF_STICKYARP, clearifflags), 2049 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap), 2050 DEF_CMD("-rxcsum6", IFCAP_RXCSUM_IPV6, clearifcap), 2051 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap), 2052 DEF_CMD("-txcsum6", IFCAP_TXCSUM_IPV6, clearifcap), 2053 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap), 2054 DEF_CMD("-rxcsum", IFCAP_RXCSUM, clearifcap), 2055 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap), 2056 DEF_CMD("-txcsum", IFCAP_TXCSUM, clearifcap), 2057 DEF_CMD("netcons", IFCAP_NETCONS, setifcap), 2058 DEF_CMD("-netcons", IFCAP_NETCONS, clearifcap), 2059 DEF_CMD_ARG("pcp", setifpcp), 2060 DEF_CMD("-pcp", 0, disableifpcp), 2061 DEF_CMD("polling", IFCAP_POLLING, setifcap), 2062 DEF_CMD("-polling", IFCAP_POLLING, clearifcap), 2063 DEF_CMD("tso6", IFCAP_TSO6, setifcap), 2064 DEF_CMD("-tso6", IFCAP_TSO6, clearifcap), 2065 DEF_CMD("tso4", IFCAP_TSO4, setifcap), 2066 DEF_CMD("-tso4", IFCAP_TSO4, clearifcap), 2067 DEF_CMD("tso", IFCAP_TSO, setifcap), 2068 DEF_CMD("-tso", IFCAP_TSO, clearifcap), 2069 DEF_CMD("toe", IFCAP_TOE, setifcap), 2070 DEF_CMD("-toe", IFCAP_TOE, clearifcap), 2071 DEF_CMD("lro", IFCAP_LRO, setifcap), 2072 DEF_CMD("-lro", IFCAP_LRO, clearifcap), 2073 DEF_CMD("txtls", IFCAP_TXTLS, setifcap), 2074 DEF_CMD("-txtls", IFCAP_TXTLS, clearifcap), 2075 DEF_CMD_SARG("rxtls", IFCAP2_RXTLS4_NAME "," IFCAP2_RXTLS6_NAME, 2076 setifcapnv), 2077 DEF_CMD_SARG("-rxtls", "-"IFCAP2_RXTLS4_NAME ",-" IFCAP2_RXTLS6_NAME, 2078 setifcapnv), 2079 DEF_CMD("wol", IFCAP_WOL, setifcap), 2080 DEF_CMD("-wol", IFCAP_WOL, clearifcap), 2081 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap), 2082 DEF_CMD("-wol_ucast", IFCAP_WOL_UCAST, clearifcap), 2083 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap), 2084 DEF_CMD("-wol_mcast", IFCAP_WOL_MCAST, clearifcap), 2085 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap), 2086 DEF_CMD("-wol_magic", IFCAP_WOL_MAGIC, clearifcap), 2087 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap), 2088 DEF_CMD("-txrtlmt", IFCAP_TXRTLMT, clearifcap), 2089 DEF_CMD("txtlsrtlmt", IFCAP_TXTLS_RTLMT, setifcap), 2090 DEF_CMD("-txtlsrtlmt", IFCAP_TXTLS_RTLMT, clearifcap), 2091 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap), 2092 DEF_CMD("-hwrxtstmp", IFCAP_HWRXTSTMP, clearifcap), 2093 DEF_CMD("normal", IFF_LINK0, clearifflags), 2094 DEF_CMD("compress", IFF_LINK0, setifflags), 2095 DEF_CMD("noicmp", IFF_LINK1, setifflags), 2096 DEF_CMD_ARG("mtu", setifmtu), 2097 DEF_CMD_ARG("name", setifname), 2098 }; 2099 2100 static __constructor void 2101 ifconfig_ctor(void) 2102 { 2103 size_t i; 2104 2105 for (i = 0; i < nitems(basic_cmds); i++) 2106 cmd_register(&basic_cmds[i]); 2107 } 2108