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 #ifndef lint 33 static const char copyright[] = 34 "@(#) Copyright (c) 1983, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"; 36 #if 0 37 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94"; 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/param.h> 42 #include <sys/ioctl.h> 43 #ifdef JAIL 44 #include <sys/jail.h> 45 #endif 46 #include <sys/module.h> 47 #include <sys/linker.h> 48 #include <sys/nv.h> 49 #include <sys/queue.h> 50 #include <sys/socket.h> 51 #include <sys/time.h> 52 53 #include <net/ethernet.h> 54 #include <net/if.h> 55 #include <net/if_dl.h> 56 #include <net/if_strings.h> 57 #include <net/if_types.h> 58 #include <net/route.h> 59 60 /* IP */ 61 #include <netinet/in.h> 62 #include <netinet/in_var.h> 63 #include <arpa/inet.h> 64 #include <netdb.h> 65 66 #include <fnmatch.h> 67 #include <ifaddrs.h> 68 #include <ctype.h> 69 #include <err.h> 70 #include <errno.h> 71 #include <fcntl.h> 72 #ifdef JAIL 73 #include <jail.h> 74 #endif 75 #include <stdbool.h> 76 #include <stdio.h> 77 #include <stdlib.h> 78 #include <string.h> 79 #include <unistd.h> 80 81 #include <libifconfig.h> 82 83 #include "ifconfig.h" 84 85 ifconfig_handle_t *lifh; 86 87 #ifdef WITHOUT_NETLINK 88 static char *descr = NULL; 89 static size_t descrlen = 64; 90 #endif 91 static int setaddr; 92 static int setmask; 93 static int doalias; 94 static int clearaddr; 95 static int newaddr = 1; 96 97 int exit_code = 0; 98 99 static char ifname_to_print[IFNAMSIZ]; /* Helper for printifnamemaybe() */ 100 101 /* Formatter Strings */ 102 char *f_inet, *f_inet6, *f_ether, *f_addr; 103 104 #ifdef WITHOUT_NETLINK 105 static void list_interfaces_ioctl(if_ctx *ctx); 106 static void status(if_ctx *ctx, const struct sockaddr_dl *sdl, 107 struct ifaddrs *ifa); 108 #endif 109 static _Noreturn void usage(void); 110 static void Perrorc(const char *cmd, int error); 111 112 static int getifflags(const char *ifname, int us, bool err_ok); 113 114 static struct afswtch *af_getbyname(const char *name); 115 116 static struct option *opts = NULL; 117 118 struct ifa_order_elt { 119 int if_order; 120 int af_orders[255]; 121 struct ifaddrs *ifa; 122 TAILQ_ENTRY(ifa_order_elt) link; 123 }; 124 125 TAILQ_HEAD(ifa_queue, ifa_order_elt); 126 127 static struct module_map_entry { 128 const char *ifname; 129 const char *kldname; 130 } module_map[] = { 131 { 132 .ifname = "tun", 133 .kldname = "if_tuntap", 134 }, 135 { 136 .ifname = "tap", 137 .kldname = "if_tuntap", 138 }, 139 { 140 .ifname = "vmnet", 141 .kldname = "if_tuntap", 142 }, 143 { 144 .ifname = "ipsec", 145 .kldname = "ipsec", 146 }, 147 { 148 /* 149 * This mapping exists because there is a conflicting enc module 150 * in CAM. ifconfig's guessing behavior will attempt to match 151 * the ifname to a module as well as if_${ifname} and clash with 152 * CAM enc. This is an assertion of the correct module to load. 153 */ 154 .ifname = "enc", 155 .kldname = "if_enc", 156 }, 157 }; 158 159 160 void 161 opt_register(struct option *p) 162 { 163 p->next = opts; 164 opts = p; 165 } 166 167 static void 168 usage(void) 169 { 170 char options[1024]; 171 struct option *p; 172 173 /* XXX not right but close enough for now */ 174 options[0] = '\0'; 175 for (p = opts; p != NULL; p = p->next) { 176 strlcat(options, p->opt_usage, sizeof(options)); 177 strlcat(options, " ", sizeof(options)); 178 } 179 180 fprintf(stderr, 181 "usage: ifconfig [-j jail] [-f type:format] %sinterface address_family\n" 182 " [address [dest_address]] [parameters]\n" 183 " ifconfig [-j jail] interface create\n" 184 " ifconfig [-j jail] -a %s[-d] [-m] [-u] [-v] [address_family]\n" 185 " ifconfig [-j jail] -l [-d] [-u] [address_family]\n" 186 " ifconfig [-j jail] %s[-d] [-m] [-u] [-v]\n", 187 options, options, options); 188 exit(1); 189 } 190 191 static void 192 ifname_update(if_ctx *ctx, const char *name) 193 { 194 strlcpy(ctx->_ifname_storage_ioctl, name, sizeof(ctx->_ifname_storage_ioctl)); 195 ctx->ifname = ctx->_ifname_storage_ioctl; 196 197 strlcpy(ifname_to_print, name, sizeof(ifname_to_print)); 198 } 199 200 static void 201 ifr_set_name(struct ifreq *ifr, const char *name) 202 { 203 strlcpy(ifr->ifr_name, name, sizeof(ifr->ifr_name)); 204 } 205 206 int 207 ioctl_ctx_ifr(if_ctx *ctx, unsigned long cmd, struct ifreq *ifr) 208 { 209 ifr_set_name(ifr, ctx->ifname); 210 return (ioctl_ctx(ctx, cmd, ifr)); 211 } 212 213 void 214 ifcreate_ioctl(if_ctx *ctx, struct ifreq *ifr) 215 { 216 char ifname_orig[IFNAMSIZ]; 217 218 strlcpy(ifname_orig, ifr->ifr_name, sizeof(ifname_orig)); 219 220 if (ioctl(ctx->io_s, SIOCIFCREATE2, ifr) < 0) { 221 switch (errno) { 222 case EEXIST: 223 errx(1, "interface %s already exists", ifr->ifr_name); 224 default: 225 err(1, "SIOCIFCREATE2 (%s)", ifr->ifr_name); 226 } 227 } 228 229 if (strncmp(ifname_orig, ifr->ifr_name, sizeof(ifname_orig)) != 0) 230 ifname_update(ctx, ifr->ifr_name); 231 } 232 233 #ifdef WITHOUT_NETLINK 234 static int 235 calcorders(struct ifaddrs *ifa, struct ifa_queue *q) 236 { 237 struct ifaddrs *prev; 238 struct ifa_order_elt *cur; 239 unsigned int ord, af, ifa_ord; 240 241 prev = NULL; 242 cur = NULL; 243 ord = 0; 244 ifa_ord = 0; 245 246 while (ifa != NULL) { 247 if (prev == NULL || 248 strcmp(ifa->ifa_name, prev->ifa_name) != 0) { 249 cur = calloc(1, sizeof(*cur)); 250 251 if (cur == NULL) 252 return (-1); 253 254 TAILQ_INSERT_TAIL(q, cur, link); 255 cur->if_order = ifa_ord ++; 256 cur->ifa = ifa; 257 ord = 0; 258 } 259 260 if (ifa->ifa_addr) { 261 af = ifa->ifa_addr->sa_family; 262 263 if (af < nitems(cur->af_orders) && 264 cur->af_orders[af] == 0) 265 cur->af_orders[af] = ++ord; 266 } 267 prev = ifa; 268 ifa = ifa->ifa_next; 269 } 270 271 return (0); 272 } 273 274 static int 275 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q) 276 { 277 struct ifa_order_elt *cur, *e1, *e2; 278 unsigned int af1, af2; 279 int ret; 280 281 e1 = e2 = NULL; 282 283 ret = strcmp(a->ifa_name, b->ifa_name); 284 if (ret != 0) { 285 TAILQ_FOREACH(cur, q, link) { 286 if (e1 && e2) 287 break; 288 289 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) 290 e1 = cur; 291 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0) 292 e2 = cur; 293 } 294 295 if (!e1 || !e2) 296 return (0); 297 else 298 return (e1->if_order - e2->if_order); 299 300 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) { 301 TAILQ_FOREACH(cur, q, link) { 302 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) { 303 e1 = cur; 304 break; 305 } 306 } 307 308 if (!e1) 309 return (0); 310 311 af1 = a->ifa_addr->sa_family; 312 af2 = b->ifa_addr->sa_family; 313 314 if (af1 < nitems(e1->af_orders) && af2 < nitems(e1->af_orders)) 315 return (e1->af_orders[af1] - e1->af_orders[af2]); 316 } 317 318 return (0); 319 } 320 #endif 321 322 static void freeformat(void) 323 { 324 325 if (f_inet != NULL) 326 free(f_inet); 327 if (f_inet6 != NULL) 328 free(f_inet6); 329 if (f_ether != NULL) 330 free(f_ether); 331 if (f_addr != NULL) 332 free(f_addr); 333 } 334 335 static void setformat(char *input) 336 { 337 char *formatstr, *category, *modifier; 338 339 formatstr = strdup(input); 340 while ((category = strsep(&formatstr, ",")) != NULL) { 341 modifier = strchr(category, ':'); 342 if (modifier == NULL || modifier[1] == '\0') { 343 warnx("Skipping invalid format specification: %s\n", 344 category); 345 continue; 346 } 347 348 /* Split the string on the separator, then seek past it */ 349 modifier[0] = '\0'; 350 modifier++; 351 352 if (strcmp(category, "addr") == 0) 353 f_addr = strdup(modifier); 354 else if (strcmp(category, "ether") == 0) 355 f_ether = strdup(modifier); 356 else if (strcmp(category, "inet") == 0) 357 f_inet = strdup(modifier); 358 else if (strcmp(category, "inet6") == 0) 359 f_inet6 = strdup(modifier); 360 } 361 free(formatstr); 362 } 363 364 #ifdef WITHOUT_NETLINK 365 static struct ifaddrs * 366 sortifaddrs(struct ifaddrs *list, 367 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *), 368 struct ifa_queue *q) 369 { 370 struct ifaddrs *right, *temp, *last, *result, *next, *tail; 371 372 right = list; 373 temp = list; 374 last = list; 375 result = NULL; 376 next = NULL; 377 tail = NULL; 378 379 if (!list || !list->ifa_next) 380 return (list); 381 382 while (temp && temp->ifa_next) { 383 last = right; 384 right = right->ifa_next; 385 temp = temp->ifa_next->ifa_next; 386 } 387 388 last->ifa_next = NULL; 389 390 list = sortifaddrs(list, compare, q); 391 right = sortifaddrs(right, compare, q); 392 393 while (list || right) { 394 395 if (!right) { 396 next = list; 397 list = list->ifa_next; 398 } else if (!list) { 399 next = right; 400 right = right->ifa_next; 401 } else if (compare(list, right, q) <= 0) { 402 next = list; 403 list = list->ifa_next; 404 } else { 405 next = right; 406 right = right->ifa_next; 407 } 408 409 if (!result) 410 result = next; 411 else 412 tail->ifa_next = next; 413 414 tail = next; 415 } 416 417 return (result); 418 } 419 #endif 420 421 static void 422 printifnamemaybe(void) 423 { 424 if (ifname_to_print[0] != '\0') 425 printf("%s\n", ifname_to_print); 426 } 427 428 static void 429 list_interfaces(if_ctx *ctx) 430 { 431 #ifdef WITHOUT_NETLINK 432 list_interfaces_ioctl(ctx); 433 #else 434 list_interfaces_nl(ctx->args); 435 #endif 436 } 437 438 static char * 439 args_peek(struct ifconfig_args *args) 440 { 441 if (args->argc > 0) 442 return (args->argv[0]); 443 return (NULL); 444 } 445 446 static char * 447 args_pop(struct ifconfig_args *args) 448 { 449 if (args->argc == 0) 450 return (NULL); 451 452 char *arg = args->argv[0]; 453 454 args->argc--; 455 args->argv++; 456 457 return (arg); 458 } 459 460 static void 461 args_parse(struct ifconfig_args *args, int argc, char *argv[]) 462 { 463 char options[1024]; 464 struct option *p; 465 int c; 466 467 /* Parse leading line options */ 468 strlcpy(options, "G:adf:j:klmnuv", sizeof(options)); 469 for (p = opts; p != NULL; p = p->next) 470 strlcat(options, p->opt, sizeof(options)); 471 while ((c = getopt(argc, argv, options)) != -1) { 472 switch (c) { 473 case 'a': /* scan all interfaces */ 474 args->all = true; 475 break; 476 case 'd': /* restrict scan to "down" interfaces */ 477 args->downonly = true; 478 break; 479 case 'f': 480 if (optarg == NULL) 481 usage(); 482 setformat(optarg); 483 break; 484 case 'G': 485 if (optarg == NULL || args->all == 0) 486 usage(); 487 args->nogroup = optarg; 488 break; 489 case 'j': 490 #ifdef JAIL 491 if (optarg == NULL) 492 usage(); 493 args->jail_name = optarg; 494 #else 495 Perror("not built with jail support"); 496 #endif 497 break; 498 case 'k': 499 args->printkeys = true; 500 break; 501 case 'l': /* scan interface names only */ 502 args->namesonly = true; 503 break; 504 case 'm': /* show media choices in status */ 505 args->supmedia = true; 506 break; 507 case 'n': /* suppress module loading */ 508 args->noload = true; 509 break; 510 case 'u': /* restrict scan to "up" interfaces */ 511 args->uponly = true; 512 break; 513 case 'v': 514 args->verbose++; 515 break; 516 case 'g': 517 if (args->all) { 518 if (optarg == NULL) 519 usage(); 520 args->matchgroup = optarg; 521 break; 522 } 523 /* FALLTHROUGH */ 524 default: 525 for (p = opts; p != NULL; p = p->next) 526 if (p->opt[0] == c) { 527 p->cb(optarg); 528 break; 529 } 530 if (p == NULL) 531 usage(); 532 break; 533 } 534 } 535 argc -= optind; 536 argv += optind; 537 538 /* -l cannot be used with -a or -m */ 539 if (args->namesonly && (args->all || args->supmedia)) 540 usage(); 541 542 /* nonsense.. */ 543 if (args->uponly && args->downonly) 544 usage(); 545 546 /* no arguments is equivalent to '-a' */ 547 if (!args->namesonly && argc < 1) 548 args->all = 1; 549 550 /* -a and -l allow an address family arg to limit the output */ 551 if (args->all || args->namesonly) { 552 if (argc > 1) 553 usage(); 554 555 if (argc == 1) { 556 const struct afswtch *afp = af_getbyname(*argv); 557 558 if (afp == NULL) { 559 warnx("Address family '%s' unknown.", *argv); 560 usage(); 561 } 562 if (afp->af_name != NULL) 563 argc--, argv++; 564 /* leave with afp non-zero */ 565 args->afp = afp; 566 } 567 } else { 568 /* not listing, need an argument */ 569 if (argc < 1) 570 usage(); 571 } 572 573 args->argc = argc; 574 args->argv = argv; 575 } 576 577 static int 578 ifconfig(if_ctx *ctx, int iscreate, const struct afswtch *uafp) 579 { 580 #ifdef WITHOUT_NETLINK 581 return (ifconfig_ioctl(ctx, iscreate, uafp)); 582 #else 583 return (ifconfig_nl(ctx, iscreate, uafp)); 584 #endif 585 } 586 587 static bool 588 isargcreate(const char *arg) 589 { 590 if (arg == NULL) 591 return (false); 592 593 if (strcmp(arg, "create") == 0 || strcmp(arg, "plumb") == 0) 594 return (true); 595 596 return (false); 597 } 598 599 static bool 600 isnametoolong(const char *ifname) 601 { 602 return (strlen(ifname) >= IFNAMSIZ); 603 } 604 605 int 606 main(int ac, char *av[]) 607 { 608 char *envformat; 609 int flags; 610 #ifdef JAIL 611 int jid; 612 #endif 613 struct ifconfig_args _args = {}; 614 struct ifconfig_args *args = &_args; 615 616 struct ifconfig_context ctx = { 617 .args = args, 618 .io_s = -1, 619 }; 620 621 f_inet = f_inet6 = f_ether = f_addr = NULL; 622 623 lifh = ifconfig_open(); 624 if (lifh == NULL) 625 err(EXIT_FAILURE, "ifconfig_open"); 626 627 envformat = getenv("IFCONFIG_FORMAT"); 628 if (envformat != NULL) 629 setformat(envformat); 630 631 /* 632 * Ensure we print interface name when expected to, 633 * even if we terminate early due to error. 634 */ 635 atexit(printifnamemaybe); 636 637 args_parse(args, ac, av); 638 639 #ifdef JAIL 640 if (args->jail_name) { 641 jid = jail_getid(args->jail_name); 642 if (jid == -1) 643 Perror("jail not found"); 644 if (jail_attach(jid) != 0) 645 Perror("cannot attach to jail"); 646 } 647 #endif 648 649 if (!args->all && !args->namesonly) { 650 /* not listing, need an argument */ 651 args->ifname = args_pop(args); 652 ctx.ifname = args->ifname; 653 654 /* check and maybe load support for this interface */ 655 ifmaybeload(args, args->ifname); 656 657 char *arg = args_peek(args); 658 if (if_nametoindex(args->ifname) == 0) { 659 /* 660 * NOTE: We must special-case the `create' command 661 * right here as we would otherwise fail when trying 662 * to find the interface. 663 */ 664 if (isargcreate(arg)) { 665 if (isnametoolong(args->ifname)) 666 errx(1, "%s: cloning name too long", 667 args->ifname); 668 ifconfig(&ctx, 1, NULL); 669 exit(exit_code); 670 } 671 #ifdef JAIL 672 /* 673 * NOTE: We have to special-case the `-vnet' command 674 * right here as we would otherwise fail when trying 675 * to find the interface as it lives in another vnet. 676 */ 677 if (arg != NULL && (strcmp(arg, "-vnet") == 0)) { 678 if (isnametoolong(args->ifname)) 679 errx(1, "%s: interface name too long", 680 args->ifname); 681 ifconfig(&ctx, 0, NULL); 682 exit(exit_code); 683 } 684 #endif 685 errx(1, "interface %s does not exist", args->ifname); 686 } else { 687 /* 688 * Do not allow use `create` command as hostname if 689 * address family is not specified. 690 */ 691 if (isargcreate(arg)) { 692 if (args->argc == 1) 693 errx(1, "interface %s already exists", 694 args->ifname); 695 args_pop(args); 696 } 697 } 698 } 699 700 /* Check for address family */ 701 if (args->argc > 0) { 702 args->afp = af_getbyname(args_peek(args)); 703 if (args->afp != NULL) 704 args_pop(args); 705 } 706 707 /* 708 * Check for a requested configuration action on a single interface, 709 * which doesn't require building, sorting, and searching the entire 710 * system address list 711 */ 712 if ((args->argc > 0) && (args->ifname != NULL)) { 713 if (isnametoolong(args->ifname)) 714 warnx("%s: interface name too long, skipping", args->ifname); 715 else { 716 flags = getifflags(args->ifname, -1, false); 717 if (!(((flags & IFF_CANTCONFIG) != 0) || 718 (args->downonly && (flags & IFF_UP) != 0) || 719 (args->uponly && (flags & IFF_UP) == 0))) 720 ifconfig(&ctx, 0, args->afp); 721 } 722 goto done; 723 } 724 725 args->allfamilies = args->afp == NULL; 726 727 list_interfaces(&ctx); 728 729 done: 730 freeformat(); 731 ifconfig_close(lifh); 732 exit(exit_code); 733 } 734 735 bool 736 match_ether(const struct sockaddr_dl *sdl) 737 { 738 switch (sdl->sdl_type) { 739 case IFT_ETHER: 740 case IFT_L2VLAN: 741 case IFT_BRIDGE: 742 if (sdl->sdl_alen == ETHER_ADDR_LEN) 743 return (true); 744 default: 745 return (false); 746 } 747 } 748 749 bool 750 match_if_flags(struct ifconfig_args *args, int if_flags) 751 { 752 if ((if_flags & IFF_CANTCONFIG) != 0) 753 return (false); 754 if (args->downonly && (if_flags & IFF_UP) != 0) 755 return (false); 756 if (args->uponly && (if_flags & IFF_UP) == 0) 757 return (false); 758 return (true); 759 } 760 761 #ifdef WITHOUT_NETLINK 762 static bool 763 match_afp(const struct afswtch *afp, int sa_family, const struct sockaddr_dl *sdl) 764 { 765 if (afp == NULL) 766 return (true); 767 /* special case for "ether" address family */ 768 if (!strcmp(afp->af_name, "ether")) { 769 if (sdl == NULL || !match_ether(sdl)) 770 return (false); 771 return (true); 772 } 773 return (afp->af_af == sa_family); 774 } 775 776 static void 777 list_interfaces_ioctl(if_ctx *ctx) 778 { 779 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q); 780 struct ifaddrs *ifap, *sifap, *ifa; 781 struct ifa_order_elt *cur, *tmp; 782 char *namecp = NULL; 783 int ifindex; 784 struct ifconfig_args *args = ctx->args; 785 786 if (getifaddrs(&ifap) != 0) 787 err(EXIT_FAILURE, "getifaddrs"); 788 789 char *cp = NULL; 790 791 if (calcorders(ifap, &q) != 0) 792 err(EXIT_FAILURE, "calcorders"); 793 794 sifap = sortifaddrs(ifap, cmpifaddrs, &q); 795 796 TAILQ_FOREACH_SAFE(cur, &q, link, tmp) 797 free(cur); 798 799 ifindex = 0; 800 for (ifa = sifap; ifa; ifa = ifa->ifa_next) { 801 struct ifreq paifr = {}; 802 const struct sockaddr_dl *sdl; 803 804 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name)); 805 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) { 806 memcpy(&paifr.ifr_addr, ifa->ifa_addr, 807 ifa->ifa_addr->sa_len); 808 } 809 810 if (args->ifname != NULL && strcmp(args->ifname, ifa->ifa_name) != 0) 811 continue; 812 if (ifa->ifa_addr->sa_family == AF_LINK) 813 sdl = satosdl_c(ifa->ifa_addr); 814 else 815 sdl = NULL; 816 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !args->namesonly) 817 continue; 818 if (isnametoolong(ifa->ifa_name)) { 819 warnx("%s: interface name too long, skipping", 820 ifa->ifa_name); 821 continue; 822 } 823 cp = ifa->ifa_name; 824 825 if (!match_if_flags(args, ifa->ifa_flags)) 826 continue; 827 if (!group_member(ifa->ifa_name, args->matchgroup, args->nogroup)) 828 continue; 829 ctx->ifname = cp; 830 /* 831 * Are we just listing the interfaces? 832 */ 833 if (args->namesonly) { 834 if (namecp == cp) 835 continue; 836 if (!match_afp(args->afp, ifa->ifa_addr->sa_family, sdl)) 837 continue; 838 namecp = cp; 839 ifindex++; 840 if (ifindex > 1) 841 printf(" "); 842 fputs(cp, stdout); 843 continue; 844 } 845 ifindex++; 846 847 if (args->argc > 0) 848 ifconfig(ctx, 0, args->afp); 849 else 850 status(ctx, sdl, ifa); 851 } 852 if (args->namesonly) 853 printf("\n"); 854 freeifaddrs(ifap); 855 } 856 #endif 857 858 /* 859 * Returns true if an interface should be listed because any its groups 860 * matches shell pattern "match" and none of groups matches pattern "nomatch". 861 * If any pattern is NULL, corresponding condition is skipped. 862 */ 863 bool 864 group_member(const char *ifname, const char *match, const char *nomatch) 865 { 866 static int sock = -1; 867 868 struct ifgroupreq ifgr; 869 struct ifg_req *ifg; 870 unsigned int len; 871 bool matched, nomatched; 872 873 /* Sanity checks. */ 874 if (match == NULL && nomatch == NULL) 875 return (true); 876 if (ifname == NULL) 877 return (false); 878 879 memset(&ifgr, 0, sizeof(ifgr)); 880 strlcpy(ifgr.ifgr_name, ifname, IFNAMSIZ); 881 882 /* The socket is opened once. Let _exit() close it. */ 883 if (sock == -1) { 884 sock = socket(AF_LOCAL, SOCK_DGRAM, 0); 885 if (sock == -1) 886 errx(1, "%s: socket(AF_LOCAL,SOCK_DGRAM)", __func__); 887 } 888 889 /* Determine amount of memory for the list of groups. */ 890 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) { 891 if (errno == EINVAL || errno == ENOTTY) 892 return (false); 893 else 894 errx(1, "%s: SIOCGIFGROUP", __func__); 895 } 896 897 /* Obtain the list of groups. */ 898 len = ifgr.ifgr_len; 899 ifgr.ifgr_groups = 900 (struct ifg_req *)calloc(len / sizeof(*ifg), sizeof(*ifg)); 901 902 if (ifgr.ifgr_groups == NULL) 903 errx(1, "%s: no memory", __func__); 904 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) 905 errx(1, "%s: SIOCGIFGROUP", __func__); 906 907 /* Perform matching. */ 908 matched = false; 909 nomatched = true; 910 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(*ifg); ifg++) { 911 len -= sizeof(*ifg); 912 if (match && !matched) 913 matched = !fnmatch(match, ifg->ifgrq_group, 0); 914 if (nomatch && nomatched) 915 nomatched = fnmatch(nomatch, ifg->ifgrq_group, 0); 916 } 917 free(ifgr.ifgr_groups); 918 919 if (match && !nomatch) 920 return (matched); 921 if (!match && nomatch) 922 return (nomatched); 923 return (matched && nomatched); 924 } 925 926 static struct afswtch *afs = NULL; 927 928 void 929 af_register(struct afswtch *p) 930 { 931 p->af_next = afs; 932 afs = p; 933 } 934 935 static struct afswtch * 936 af_getbyname(const char *name) 937 { 938 struct afswtch *afp; 939 940 for (afp = afs; afp != NULL; afp = afp->af_next) 941 if (strcmp(afp->af_name, name) == 0) 942 return afp; 943 return NULL; 944 } 945 946 struct afswtch * 947 af_getbyfamily(int af) 948 { 949 struct afswtch *afp; 950 951 for (afp = afs; afp != NULL; afp = afp->af_next) 952 if (afp->af_af == af) 953 return afp; 954 return NULL; 955 } 956 957 void 958 af_other_status(if_ctx *ctx) 959 { 960 struct afswtch *afp; 961 uint8_t afmask[howmany(AF_MAX, NBBY)]; 962 963 memset(afmask, 0, sizeof(afmask)); 964 for (afp = afs; afp != NULL; afp = afp->af_next) { 965 if (afp->af_other_status == NULL) 966 continue; 967 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 968 continue; 969 afp->af_other_status(ctx); 970 setbit(afmask, afp->af_af); 971 } 972 } 973 974 static void 975 af_all_tunnel_status(if_ctx *ctx) 976 { 977 struct afswtch *afp; 978 uint8_t afmask[howmany(AF_MAX, NBBY)]; 979 980 memset(afmask, 0, sizeof(afmask)); 981 for (afp = afs; afp != NULL; afp = afp->af_next) { 982 if (afp->af_status_tunnel == NULL) 983 continue; 984 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 985 continue; 986 afp->af_status_tunnel(ctx); 987 setbit(afmask, afp->af_af); 988 } 989 } 990 991 static struct cmd *cmds = NULL; 992 993 void 994 cmd_register(struct cmd *p) 995 { 996 p->c_next = cmds; 997 cmds = p; 998 } 999 1000 static const struct cmd * 1001 cmd_lookup(const char *name, int iscreate) 1002 { 1003 const struct cmd *p; 1004 1005 for (p = cmds; p != NULL; p = p->c_next) 1006 if (strcmp(name, p->c_name) == 0) { 1007 if (iscreate) { 1008 if (p->c_iscloneop) 1009 return p; 1010 } else { 1011 if (!p->c_iscloneop) 1012 return p; 1013 } 1014 } 1015 return NULL; 1016 } 1017 1018 struct callback { 1019 callback_func *cb_func; 1020 void *cb_arg; 1021 struct callback *cb_next; 1022 }; 1023 static struct callback *callbacks = NULL; 1024 1025 void 1026 callback_register(callback_func *func, void *arg) 1027 { 1028 struct callback *cb; 1029 1030 cb = malloc(sizeof(struct callback)); 1031 if (cb == NULL) 1032 errx(1, "unable to allocate memory for callback"); 1033 cb->cb_func = func; 1034 cb->cb_arg = arg; 1035 cb->cb_next = callbacks; 1036 callbacks = cb; 1037 } 1038 1039 /* specially-handled commands */ 1040 static void setifaddr(if_ctx *ctx, const char *addr, int param); 1041 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr); 1042 1043 static void setifdstaddr(if_ctx *ctx, const char *addr, int param __unused); 1044 static const struct cmd setifdstaddr_cmd = 1045 DEF_CMD("ifdstaddr", 0, setifdstaddr); 1046 1047 int 1048 af_exec_ioctl(if_ctx *ctx, unsigned long action, void *data) 1049 { 1050 struct ifreq *req = (struct ifreq *)data; 1051 1052 strlcpy(req->ifr_name, ctx->ifname, sizeof(req->ifr_name)); 1053 if (ioctl_ctx(ctx, action, req) == 0) 1054 return (0); 1055 return (errno); 1056 } 1057 1058 static void 1059 delifaddr(if_ctx *ctx, const struct afswtch *afp) 1060 { 1061 int error; 1062 1063 if (afp->af_exec == NULL) { 1064 warnx("interface %s cannot change %s addresses!", 1065 ctx->ifname, afp->af_name); 1066 clearaddr = 0; 1067 return; 1068 } 1069 1070 error = afp->af_exec(ctx, afp->af_difaddr, afp->af_ridreq); 1071 if (error != 0) { 1072 if (error == EADDRNOTAVAIL && (doalias >= 0)) { 1073 /* means no previous address for interface */ 1074 } else 1075 Perrorc("ioctl (SIOCDIFADDR)", error); 1076 } 1077 } 1078 1079 static void 1080 addifaddr(if_ctx *ctx, const struct afswtch *afp) 1081 { 1082 if (afp->af_exec == NULL) { 1083 warnx("interface %s cannot change %s addresses!", 1084 ctx->ifname, afp->af_name); 1085 newaddr = 0; 1086 return; 1087 } 1088 1089 if (setaddr || setmask) { 1090 int error = afp->af_exec(ctx, afp->af_aifaddr, afp->af_addreq); 1091 if (error != 0) 1092 Perrorc("ioctl (SIOCAIFADDR)", error); 1093 } 1094 } 1095 1096 int 1097 ifconfig_ioctl(if_ctx *orig_ctx, int iscreate, const struct afswtch *uafp) 1098 { 1099 const struct afswtch *afp, *nafp; 1100 const struct cmd *p; 1101 struct callback *cb; 1102 int s; 1103 int argc = orig_ctx->args->argc; 1104 char *const *argv = orig_ctx->args->argv; 1105 struct ifconfig_context _ctx = { 1106 .args = orig_ctx->args, 1107 .io_ss = orig_ctx->io_ss, 1108 .ifname = orig_ctx->ifname, 1109 }; 1110 struct ifconfig_context *ctx = &_ctx; 1111 1112 struct ifreq ifr = {}; 1113 strlcpy(ifr.ifr_name, ctx->ifname, sizeof ifr.ifr_name); 1114 afp = NULL; 1115 if (uafp != NULL) 1116 afp = uafp; 1117 /* 1118 * This is the historical "accident" allowing users to configure IPv4 1119 * addresses without the "inet" keyword which while a nice feature has 1120 * proven to complicate other things. We cannot remove this but only 1121 * make sure we will never have a similar implicit default for IPv6 or 1122 * any other address familiy. We need a fallback though for 1123 * ifconfig IF up/down etc. to work without INET support as people 1124 * never used ifconfig IF link up/down, etc. either. 1125 */ 1126 #ifndef RESCUE 1127 #ifdef INET 1128 if (afp == NULL && feature_present("inet")) 1129 afp = af_getbyname("inet"); 1130 #endif 1131 #endif 1132 if (afp == NULL) 1133 afp = af_getbyname("link"); 1134 if (afp == NULL) { 1135 warnx("Please specify an address_family."); 1136 usage(); 1137 } 1138 1139 top: 1140 ifr.ifr_addr.sa_family = 1141 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ? 1142 AF_LOCAL : afp->af_af; 1143 1144 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 && 1145 (uafp != NULL || errno != EAFNOSUPPORT || 1146 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)) 1147 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1148 1149 ctx->io_s = s; 1150 ctx->afp = afp; 1151 1152 while (argc > 0) { 1153 p = cmd_lookup(*argv, iscreate); 1154 if (iscreate && p == NULL) { 1155 /* 1156 * Push the clone create callback so the new 1157 * device is created and can be used for any 1158 * remaining arguments. 1159 */ 1160 cb = callbacks; 1161 if (cb == NULL) 1162 errx(1, "internal error, no callback"); 1163 callbacks = cb->cb_next; 1164 cb->cb_func(ctx, cb->cb_arg); 1165 iscreate = 0; 1166 /* 1167 * Handle any address family spec that 1168 * immediately follows and potentially 1169 * recreate the socket. 1170 */ 1171 nafp = af_getbyname(*argv); 1172 if (nafp != NULL) { 1173 argc--, argv++; 1174 if (nafp != afp) { 1175 close(s); 1176 afp = nafp; 1177 goto top; 1178 } 1179 } 1180 /* 1181 * Look for a normal parameter. 1182 */ 1183 continue; 1184 } 1185 if (p == NULL) { 1186 /* 1187 * Not a recognized command, choose between setting 1188 * the interface address and the dst address. 1189 */ 1190 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd); 1191 } 1192 if (p->c_parameter == NEXTARG && p->c_u.c_func) { 1193 if (argv[1] == NULL) 1194 errx(1, "'%s' requires argument", 1195 p->c_name); 1196 p->c_u.c_func(ctx, argv[1], 0); 1197 argc--, argv++; 1198 } else if (p->c_parameter == OPTARG && p->c_u.c_func) { 1199 p->c_u.c_func(ctx, argv[1], 0); 1200 if (argv[1] != NULL) 1201 argc--, argv++; 1202 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) { 1203 if (argc < 3) 1204 errx(1, "'%s' requires 2 arguments", 1205 p->c_name); 1206 p->c_u.c_func2(ctx, argv[1], argv[2]); 1207 argc -= 2, argv += 2; 1208 } else if (p->c_parameter == SPARAM && p->c_u.c_func3) { 1209 p->c_u.c_func3(ctx, *argv, p->c_sparameter); 1210 } else if (p->c_u.c_func) 1211 p->c_u.c_func(ctx, *argv, p->c_parameter); 1212 argc--, argv++; 1213 } 1214 1215 /* 1216 * Do any post argument processing required by the address family. 1217 */ 1218 if (afp->af_postproc != NULL) 1219 afp->af_postproc(ctx, newaddr, getifflags(ctx->ifname, s, true)); 1220 /* 1221 * Do deferred callbacks registered while processing 1222 * command-line arguments. 1223 */ 1224 for (cb = callbacks; cb != NULL; cb = cb->cb_next) 1225 cb->cb_func(ctx, cb->cb_arg); 1226 /* 1227 * Do deferred operations. 1228 */ 1229 if (clearaddr) 1230 delifaddr(ctx, afp); 1231 if (newaddr) 1232 addifaddr(ctx, afp); 1233 1234 close(s); 1235 return(0); 1236 } 1237 1238 static void 1239 setifaddr(if_ctx *ctx, const char *addr, int param __unused) 1240 { 1241 const struct afswtch *afp = ctx->afp; 1242 1243 if (afp->af_getaddr == NULL) 1244 return; 1245 /* 1246 * Delay the ioctl to set the interface addr until flags are all set. 1247 * The address interpretation may depend on the flags, 1248 * and the flags may change when the address is set. 1249 */ 1250 setaddr++; 1251 if (doalias == 0 && afp->af_af != AF_LINK) 1252 clearaddr = 1; 1253 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR)); 1254 } 1255 1256 static void 1257 settunnel(if_ctx *ctx, const char *src, const char *dst) 1258 { 1259 const struct afswtch *afp = ctx->afp; 1260 struct addrinfo *srcres, *dstres; 1261 int ecode; 1262 1263 if (afp->af_settunnel == NULL) { 1264 warn("address family %s does not support tunnel setup", 1265 afp->af_name); 1266 return; 1267 } 1268 1269 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0) 1270 errx(1, "error in parsing address string: %s", 1271 gai_strerror(ecode)); 1272 1273 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0) 1274 errx(1, "error in parsing address string: %s", 1275 gai_strerror(ecode)); 1276 1277 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family) 1278 errx(1, 1279 "source and destination address families do not match"); 1280 1281 afp->af_settunnel(ctx, srcres, dstres); 1282 1283 freeaddrinfo(srcres); 1284 freeaddrinfo(dstres); 1285 } 1286 1287 static void 1288 deletetunnel(if_ctx *ctx, const char *vname __unused, int param __unused) 1289 { 1290 struct ifreq ifr = {}; 1291 1292 if (ioctl_ctx_ifr(ctx, SIOCDIFPHYADDR, &ifr) < 0) 1293 err(1, "SIOCDIFPHYADDR"); 1294 } 1295 1296 #ifdef JAIL 1297 static void 1298 setifvnet(if_ctx *ctx, const char *jname, int dummy __unused) 1299 { 1300 struct ifreq ifr = {}; 1301 1302 ifr.ifr_jid = jail_getid(jname); 1303 if (ifr.ifr_jid < 0) 1304 errx(1, "%s", jail_errmsg); 1305 if (ioctl_ctx_ifr(ctx, SIOCSIFVNET, &ifr) < 0) 1306 err(1, "SIOCSIFVNET"); 1307 } 1308 1309 static void 1310 setifrvnet(if_ctx *ctx, const char *jname, int dummy __unused) 1311 { 1312 struct ifreq ifr = {}; 1313 1314 ifr.ifr_jid = jail_getid(jname); 1315 if (ifr.ifr_jid < 0) 1316 errx(1, "%s", jail_errmsg); 1317 if (ioctl_ctx_ifr(ctx, SIOCSIFRVNET, &ifr) < 0) 1318 err(1, "SIOCSIFRVNET(%d, %s)", ifr.ifr_jid, ifr.ifr_name); 1319 } 1320 #endif 1321 1322 static void 1323 setifnetmask(if_ctx *ctx, const char *addr, int dummy __unused) 1324 { 1325 const struct afswtch *afp = ctx->afp; 1326 1327 if (afp->af_getaddr != NULL) { 1328 setmask++; 1329 afp->af_getaddr(addr, MASK); 1330 } 1331 } 1332 1333 static void 1334 setifbroadaddr(if_ctx *ctx, const char *addr, int dummy __unused) 1335 { 1336 const struct afswtch *afp = ctx->afp; 1337 1338 if (afp->af_getaddr != NULL) 1339 afp->af_getaddr(addr, BRDADDR); 1340 } 1341 1342 static void 1343 notealias(if_ctx *ctx, const char *addr __unused, int param) 1344 { 1345 const struct afswtch *afp = ctx->afp; 1346 1347 if (setaddr && doalias == 0 && param < 0) { 1348 if (afp->af_copyaddr != NULL) 1349 afp->af_copyaddr(ctx, RIDADDR, ADDR); 1350 } 1351 doalias = param; 1352 if (param < 0) { 1353 clearaddr = 1; 1354 newaddr = 0; 1355 } else 1356 clearaddr = 0; 1357 } 1358 1359 static void 1360 setifdstaddr(if_ctx *ctx, const char *addr, int param __unused) 1361 { 1362 const struct afswtch *afp = ctx->afp; 1363 1364 if (afp->af_getaddr != NULL) 1365 afp->af_getaddr(addr, DSTADDR); 1366 } 1367 1368 static int 1369 getifflags(const char *ifname, int us, bool err_ok) 1370 { 1371 struct ifreq my_ifr; 1372 int s; 1373 1374 memset(&my_ifr, 0, sizeof(my_ifr)); 1375 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name)); 1376 if (us < 0) { 1377 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) 1378 err(1, "socket(family AF_LOCAL,SOCK_DGRAM"); 1379 } else 1380 s = us; 1381 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { 1382 if (!err_ok) { 1383 Perror("ioctl (SIOCGIFFLAGS)"); 1384 exit(1); 1385 } 1386 } 1387 if (us < 0) 1388 close(s); 1389 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16)); 1390 } 1391 1392 /* 1393 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion 1394 * of the ifreq structure, which may confuse other parts of ifconfig. 1395 * Make a private copy so we can avoid that. 1396 */ 1397 static void 1398 clearifflags(if_ctx *ctx, const char *vname, int value) 1399 { 1400 struct ifreq my_ifr; 1401 int flags; 1402 1403 flags = getifflags(ctx->ifname, ctx->io_s, false); 1404 flags &= ~value; 1405 memset(&my_ifr, 0, sizeof(my_ifr)); 1406 strlcpy(my_ifr.ifr_name, ctx->ifname, sizeof(my_ifr.ifr_name)); 1407 my_ifr.ifr_flags = flags & 0xffff; 1408 my_ifr.ifr_flagshigh = flags >> 16; 1409 if (ioctl(ctx->io_s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1410 Perror(vname); 1411 } 1412 1413 static void 1414 setifflags(if_ctx *ctx, const char *vname, int value) 1415 { 1416 struct ifreq my_ifr; 1417 int flags; 1418 1419 flags = getifflags(ctx->ifname, ctx->io_s, false); 1420 flags |= value; 1421 memset(&my_ifr, 0, sizeof(my_ifr)); 1422 strlcpy(my_ifr.ifr_name, ctx->ifname, sizeof(my_ifr.ifr_name)); 1423 my_ifr.ifr_flags = flags & 0xffff; 1424 my_ifr.ifr_flagshigh = flags >> 16; 1425 if (ioctl(ctx->io_s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1426 Perror(vname); 1427 } 1428 1429 void 1430 clearifcap(if_ctx *ctx, const char *vname, int value) 1431 { 1432 struct ifreq ifr = {}; 1433 int flags; 1434 1435 if (ioctl_ctx_ifr(ctx, SIOCGIFCAP, &ifr) < 0) { 1436 Perror("ioctl (SIOCGIFCAP)"); 1437 exit(1); 1438 } 1439 flags = ifr.ifr_curcap; 1440 flags &= ~value; 1441 flags &= ifr.ifr_reqcap; 1442 /* Check for no change in capabilities. */ 1443 if (ifr.ifr_curcap == flags) 1444 return; 1445 ifr.ifr_reqcap = flags; 1446 if (ioctl_ctx(ctx, SIOCSIFCAP, &ifr) < 0) 1447 Perror(vname); 1448 } 1449 1450 void 1451 setifcap(if_ctx *ctx, const char *vname, int value) 1452 { 1453 struct ifreq ifr = {}; 1454 int flags; 1455 1456 if (ioctl_ctx_ifr(ctx, SIOCGIFCAP, &ifr) < 0) { 1457 Perror("ioctl (SIOCGIFCAP)"); 1458 exit(1); 1459 } 1460 flags = ifr.ifr_curcap; 1461 flags |= value; 1462 flags &= ifr.ifr_reqcap; 1463 /* Check for no change in capabilities. */ 1464 if (ifr.ifr_curcap == flags) 1465 return; 1466 ifr.ifr_reqcap = flags; 1467 if (ioctl_ctx(ctx, SIOCSIFCAP, &ifr) < 0) 1468 Perror(vname); 1469 } 1470 1471 void 1472 setifcapnv(if_ctx *ctx, const char *vname, const char *arg) 1473 { 1474 nvlist_t *nvcap; 1475 void *buf; 1476 char *marg, *mopt; 1477 size_t nvbuflen; 1478 bool neg; 1479 struct ifreq ifr = {}; 1480 1481 if (ioctl_ctx_ifr(ctx, SIOCGIFCAP, &ifr) < 0) 1482 Perror("ioctl (SIOCGIFCAP)"); 1483 if ((ifr.ifr_curcap & IFCAP_NV) == 0) { 1484 warnx("IFCAP_NV not supported"); 1485 return; /* Not exit() */ 1486 } 1487 1488 marg = strdup(arg); 1489 if (marg == NULL) 1490 Perror("strdup"); 1491 nvcap = nvlist_create(0); 1492 if (nvcap == NULL) 1493 Perror("nvlist_create"); 1494 while ((mopt = strsep(&marg, ",")) != NULL) { 1495 neg = *mopt == '-'; 1496 if (neg) 1497 mopt++; 1498 if (strcmp(mopt, "rxtls") == 0) { 1499 nvlist_add_bool(nvcap, "rxtls4", !neg); 1500 nvlist_add_bool(nvcap, "rxtls6", !neg); 1501 } else { 1502 nvlist_add_bool(nvcap, mopt, !neg); 1503 } 1504 } 1505 buf = nvlist_pack(nvcap, &nvbuflen); 1506 if (buf == NULL) { 1507 errx(1, "nvlist_pack error"); 1508 exit(1); 1509 } 1510 ifr.ifr_cap_nv.buf_length = ifr.ifr_cap_nv.length = nvbuflen; 1511 ifr.ifr_cap_nv.buffer = buf; 1512 if (ioctl_ctx(ctx, SIOCSIFCAPNV, (caddr_t)&ifr) < 0) 1513 Perror(vname); 1514 free(buf); 1515 nvlist_destroy(nvcap); 1516 free(marg); 1517 } 1518 1519 static void 1520 setifmetric(if_ctx *ctx, const char *val, int dummy __unused) 1521 { 1522 struct ifreq ifr = {}; 1523 1524 ifr.ifr_metric = atoi(val); 1525 if (ioctl_ctx_ifr(ctx, SIOCSIFMETRIC, &ifr) < 0) 1526 err(1, "ioctl SIOCSIFMETRIC (set metric)"); 1527 } 1528 1529 static void 1530 setifmtu(if_ctx *ctx, const char *val, int dummy __unused) 1531 { 1532 struct ifreq ifr = {}; 1533 1534 ifr.ifr_mtu = atoi(val); 1535 if (ioctl_ctx_ifr(ctx, SIOCSIFMTU, &ifr) < 0) 1536 err(1, "ioctl SIOCSIFMTU (set mtu)"); 1537 } 1538 1539 static void 1540 setifpcp(if_ctx *ctx, const char *val, int arg __unused) 1541 { 1542 struct ifreq ifr = {}; 1543 u_long ul; 1544 char *endp; 1545 1546 ul = strtoul(val, &endp, 0); 1547 if (*endp != '\0') 1548 errx(1, "invalid value for pcp"); 1549 if (ul > 7) 1550 errx(1, "value for pcp out of range"); 1551 ifr.ifr_lan_pcp = ul; 1552 if (ioctl_ctx_ifr(ctx, SIOCSLANPCP, &ifr) == -1) 1553 err(1, "SIOCSLANPCP"); 1554 } 1555 1556 static void 1557 disableifpcp(if_ctx *ctx, const char *val __unused, int arg __unused) 1558 { 1559 struct ifreq ifr = {}; 1560 1561 ifr.ifr_lan_pcp = IFNET_PCP_NONE; 1562 if (ioctl_ctx_ifr(ctx, SIOCSLANPCP, &ifr) == -1) 1563 err(1, "SIOCSLANPCP"); 1564 } 1565 1566 static void 1567 setifname(if_ctx *ctx, const char *val, int dummy __unused) 1568 { 1569 struct ifreq ifr = {}; 1570 char *newname; 1571 1572 ifr_set_name(&ifr, ctx->ifname); 1573 newname = strdup(val); 1574 if (newname == NULL) 1575 err(1, "no memory to set ifname"); 1576 ifr.ifr_data = newname; 1577 if (ioctl_ctx(ctx, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 1578 free(newname); 1579 err(1, "ioctl SIOCSIFNAME (set name)"); 1580 } 1581 ifname_update(ctx, newname); 1582 free(newname); 1583 } 1584 1585 static void 1586 setifdescr(if_ctx *ctx, const char *val, int dummy __unused) 1587 { 1588 struct ifreq ifr = {}; 1589 char *newdescr; 1590 1591 ifr.ifr_buffer.length = strlen(val) + 1; 1592 if (ifr.ifr_buffer.length == 1) { 1593 ifr.ifr_buffer.buffer = newdescr = NULL; 1594 ifr.ifr_buffer.length = 0; 1595 } else { 1596 newdescr = strdup(val); 1597 ifr.ifr_buffer.buffer = newdescr; 1598 if (newdescr == NULL) { 1599 warn("no memory to set ifdescr"); 1600 return; 1601 } 1602 } 1603 1604 if (ioctl_ctx_ifr(ctx, SIOCSIFDESCR, &ifr) < 0) 1605 err(1, "ioctl SIOCSIFDESCR (set descr)"); 1606 1607 free(newdescr); 1608 } 1609 1610 static void 1611 unsetifdescr(if_ctx *ctx, const char *val __unused, int value __unused) 1612 { 1613 setifdescr(ctx, "", 0); 1614 } 1615 1616 #ifdef WITHOUT_NETLINK 1617 1618 #define IFFBITS \ 1619 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \ 1620 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \ 1621 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP\25STICKYARP" 1622 1623 #define IFCAPBITS \ 1624 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \ 1625 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \ 1626 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \ 1627 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP\33NOMAP\34TXTLS4\35TXTLS6" \ 1628 "\36VXLAN_HWCSUM\37VXLAN_HWTSO\40TXTLS_RTLMT" 1629 1630 static void 1631 print_ifcap_nv(if_ctx *ctx) 1632 { 1633 struct ifreq ifr = {}; 1634 nvlist_t *nvcap; 1635 const char *nvname; 1636 void *buf, *cookie; 1637 bool first, val; 1638 int type; 1639 1640 buf = malloc(IFR_CAP_NV_MAXBUFSIZE); 1641 if (buf == NULL) 1642 Perror("malloc"); 1643 ifr.ifr_cap_nv.buffer = buf; 1644 ifr.ifr_cap_nv.buf_length = IFR_CAP_NV_MAXBUFSIZE; 1645 if (ioctl_ctx_ifr(ctx, SIOCGIFCAPNV, &ifr) != 0) 1646 Perror("ioctl (SIOCGIFCAPNV)"); 1647 nvcap = nvlist_unpack(ifr.ifr_cap_nv.buffer, 1648 ifr.ifr_cap_nv.length, 0); 1649 if (nvcap == NULL) 1650 Perror("nvlist_unpack"); 1651 printf("\toptions"); 1652 cookie = NULL; 1653 for (first = true;; first = false) { 1654 nvname = nvlist_next(nvcap, &type, &cookie); 1655 if (nvname == NULL) { 1656 printf("\n"); 1657 break; 1658 } 1659 if (type == NV_TYPE_BOOL) { 1660 val = nvlist_get_bool(nvcap, nvname); 1661 if (val) { 1662 printf("%c%s", 1663 first ? ' ' : ',', nvname); 1664 } 1665 } 1666 } 1667 if (ctx->args->supmedia) { 1668 printf("\tcapabilities"); 1669 cookie = NULL; 1670 for (first = true;; first = false) { 1671 nvname = nvlist_next(nvcap, &type, 1672 &cookie); 1673 if (nvname == NULL) { 1674 printf("\n"); 1675 break; 1676 } 1677 if (type == NV_TYPE_BOOL) 1678 printf("%c%s", first ? ' ' : 1679 ',', nvname); 1680 } 1681 } 1682 nvlist_destroy(nvcap); 1683 free(buf); 1684 1685 if (ioctl_ctx(ctx, SIOCGIFCAP, (caddr_t)&ifr) != 0) 1686 Perror("ioctl (SIOCGIFCAP)"); 1687 } 1688 1689 static void 1690 print_ifcap(if_ctx *ctx) 1691 { 1692 struct ifreq ifr = {}; 1693 1694 if (ioctl_ctx_ifr(ctx, SIOCGIFCAP, &ifr) != 0) 1695 return; 1696 1697 if ((ifr.ifr_curcap & IFCAP_NV) != 0) 1698 print_ifcap_nv(ctx); 1699 else { 1700 printb("\toptions", ifr.ifr_curcap, IFCAPBITS); 1701 putchar('\n'); 1702 if (ctx->args->supmedia && ifr.ifr_reqcap != 0) { 1703 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS); 1704 putchar('\n'); 1705 } 1706 } 1707 } 1708 #endif 1709 1710 void 1711 print_ifstatus(if_ctx *ctx) 1712 { 1713 struct ifstat ifs; 1714 1715 strlcpy(ifs.ifs_name, ctx->ifname, sizeof ifs.ifs_name); 1716 if (ioctl_ctx(ctx, SIOCGIFSTATUS, &ifs) == 0) 1717 printf("%s", ifs.ascii); 1718 } 1719 1720 void 1721 print_metric(if_ctx *ctx) 1722 { 1723 struct ifreq ifr = {}; 1724 1725 if (ioctl_ctx_ifr(ctx, SIOCGIFMETRIC, &ifr) != -1) 1726 printf(" metric %d", ifr.ifr_metric); 1727 } 1728 1729 #ifdef WITHOUT_NETLINK 1730 static void 1731 print_mtu(if_ctx *ctx) 1732 { 1733 struct ifreq ifr = {}; 1734 1735 if (ioctl_ctx_ifr(ctx, SIOCGIFMTU, &ifr) != -1) 1736 printf(" mtu %d", ifr.ifr_mtu); 1737 } 1738 1739 static void 1740 print_description(if_ctx *ctx) 1741 { 1742 struct ifreq ifr = {}; 1743 1744 ifr_set_name(&ifr, ctx->ifname); 1745 for (;;) { 1746 if ((descr = reallocf(descr, descrlen)) != NULL) { 1747 ifr.ifr_buffer.buffer = descr; 1748 ifr.ifr_buffer.length = descrlen; 1749 if (ioctl_ctx(ctx, SIOCGIFDESCR, &ifr) == 0) { 1750 if (ifr.ifr_buffer.buffer == descr) { 1751 if (strlen(descr) > 0) 1752 printf("\tdescription: %s\n", 1753 descr); 1754 } else if (ifr.ifr_buffer.length > descrlen) { 1755 descrlen = ifr.ifr_buffer.length; 1756 continue; 1757 } 1758 } 1759 } else 1760 warn("unable to allocate memory for interface" 1761 "description"); 1762 break; 1763 } 1764 } 1765 1766 /* 1767 * Print the status of the interface. If an address family was 1768 * specified, show only it; otherwise, show them all. 1769 */ 1770 static void 1771 status(if_ctx *ctx, const struct sockaddr_dl *sdl __unused, struct ifaddrs *ifa) 1772 { 1773 struct ifaddrs *ift; 1774 int s, old_s; 1775 struct ifconfig_args *args = ctx->args; 1776 bool allfamilies = args->afp == NULL; 1777 struct ifreq ifr = {}; 1778 1779 if (args->afp == NULL) 1780 ifr.ifr_addr.sa_family = AF_LOCAL; 1781 else 1782 ifr.ifr_addr.sa_family = 1783 args->afp->af_af == AF_LINK ? AF_LOCAL : args->afp->af_af; 1784 1785 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); 1786 if (s < 0) 1787 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1788 old_s = ctx->io_s; 1789 ctx->io_s = s; 1790 1791 printf("%s: ", ctx->ifname); 1792 printb("flags", ifa->ifa_flags, IFFBITS); 1793 print_metric(ctx); 1794 print_mtu(ctx); 1795 putchar('\n'); 1796 1797 print_description(ctx); 1798 1799 print_ifcap(ctx); 1800 1801 tunnel_status(ctx); 1802 1803 for (ift = ifa; ift != NULL; ift = ift->ifa_next) { 1804 if (ift->ifa_addr == NULL) 1805 continue; 1806 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0) 1807 continue; 1808 if (allfamilies) { 1809 const struct afswtch *p; 1810 p = af_getbyfamily(ift->ifa_addr->sa_family); 1811 if (p != NULL && p->af_status != NULL) 1812 p->af_status(ctx, ift); 1813 } else if (args->afp->af_af == ift->ifa_addr->sa_family) 1814 args->afp->af_status(ctx, ift); 1815 } 1816 #if 0 1817 if (allfamilies || afp->af_af == AF_LINK) { 1818 const struct afswtch *lafp; 1819 1820 /* 1821 * Hack; the link level address is received separately 1822 * from the routing information so any address is not 1823 * handled above. Cobble together an entry and invoke 1824 * the status method specially. 1825 */ 1826 lafp = af_getbyname("lladdr"); 1827 if (lafp != NULL) { 1828 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl; 1829 lafp->af_status(s, &info); 1830 } 1831 } 1832 #endif 1833 if (allfamilies) 1834 af_other_status(ctx); 1835 else if (args->afp->af_other_status != NULL) 1836 args->afp->af_other_status(ctx); 1837 1838 print_ifstatus(ctx); 1839 if (args->verbose > 0) 1840 sfp_status(ctx); 1841 1842 close(s); 1843 ctx->io_s = old_s; 1844 return; 1845 } 1846 #endif 1847 1848 void 1849 tunnel_status(if_ctx *ctx) 1850 { 1851 af_all_tunnel_status(ctx); 1852 } 1853 1854 static void 1855 Perrorc(const char *cmd, int error) 1856 { 1857 switch (errno) { 1858 1859 case ENXIO: 1860 errx(1, "%s: no such interface", cmd); 1861 break; 1862 1863 case EPERM: 1864 errx(1, "%s: permission denied", cmd); 1865 break; 1866 1867 default: 1868 errc(1, error, "%s", cmd); 1869 } 1870 } 1871 1872 void 1873 Perror(const char *cmd) 1874 { 1875 Perrorc(cmd, errno); 1876 } 1877 1878 /* 1879 * Print a value a la the %b format of the kernel's printf 1880 */ 1881 void 1882 printb(const char *s, unsigned v, const char *bits) 1883 { 1884 int i, any = 0; 1885 char c; 1886 1887 if (bits && *bits == 8) 1888 printf("%s=%o", s, v); 1889 else 1890 printf("%s=%x", s, v); 1891 if (bits) { 1892 bits++; 1893 putchar('<'); 1894 while ((i = *bits++) != '\0') { 1895 if (v & (1u << (i-1))) { 1896 if (any) 1897 putchar(','); 1898 any = 1; 1899 for (; (c = *bits) > 32; bits++) 1900 putchar(c); 1901 } else 1902 for (; *bits > 32; bits++) 1903 ; 1904 } 1905 putchar('>'); 1906 } 1907 } 1908 1909 void 1910 print_vhid(const struct ifaddrs *ifa) 1911 { 1912 struct if_data *ifd; 1913 1914 if (ifa->ifa_data == NULL) 1915 return; 1916 1917 ifd = ifa->ifa_data; 1918 if (ifd->ifi_vhid == 0) 1919 return; 1920 1921 printf(" vhid %d", ifd->ifi_vhid); 1922 } 1923 1924 void 1925 ifmaybeload(struct ifconfig_args *args, const char *name) 1926 { 1927 #define MOD_PREFIX_LEN 3 /* "if_" */ 1928 struct module_stat mstat; 1929 int fileid, modid; 1930 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp; 1931 const char *cp; 1932 struct module_map_entry *mme; 1933 bool found; 1934 1935 /* loading suppressed by the user */ 1936 if (args->noload) 1937 return; 1938 1939 /* trim the interface number off the end */ 1940 strlcpy(ifname, name, sizeof(ifname)); 1941 dp = ifname + strlen(ifname) - 1; 1942 for (; dp > ifname; dp--) { 1943 if (isdigit(*dp)) 1944 *dp = '\0'; 1945 else 1946 break; 1947 } 1948 1949 /* Either derive it from the map or guess otherwise */ 1950 *ifkind = '\0'; 1951 found = false; 1952 for (unsigned i = 0; i < nitems(module_map); ++i) { 1953 mme = &module_map[i]; 1954 if (strcmp(mme->ifname, ifname) == 0) { 1955 strlcpy(ifkind, mme->kldname, sizeof(ifkind)); 1956 found = true; 1957 break; 1958 } 1959 } 1960 1961 /* We didn't have an alias for it... we'll guess. */ 1962 if (!found) { 1963 /* turn interface and unit into module name */ 1964 strlcpy(ifkind, "if_", sizeof(ifkind)); 1965 strlcat(ifkind, ifname, sizeof(ifkind)); 1966 } 1967 1968 /* scan files in kernel */ 1969 mstat.version = sizeof(struct module_stat); 1970 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) { 1971 /* scan modules in file */ 1972 for (modid = kldfirstmod(fileid); modid > 0; 1973 modid = modfnext(modid)) { 1974 if (modstat(modid, &mstat) < 0) 1975 continue; 1976 /* strip bus name if present */ 1977 if ((cp = strchr(mstat.name, '/')) != NULL) { 1978 cp++; 1979 } else { 1980 cp = mstat.name; 1981 } 1982 /* 1983 * Is it already loaded? Don't compare with ifname if 1984 * we were specifically told which kld to use. Doing 1985 * so could lead to conflicts not trivially solved. 1986 */ 1987 if ((!found && strcmp(ifname, cp) == 0) || 1988 strcmp(ifkind, cp) == 0) 1989 return; 1990 } 1991 } 1992 1993 /* 1994 * Try to load the module. But ignore failures, because ifconfig can't 1995 * infer the names of all drivers (eg mlx4en(4)). 1996 */ 1997 (void) kldload(ifkind); 1998 } 1999 2000 static struct cmd basic_cmds[] = { 2001 DEF_CMD("up", IFF_UP, setifflags), 2002 DEF_CMD("down", IFF_UP, clearifflags), 2003 DEF_CMD("arp", IFF_NOARP, clearifflags), 2004 DEF_CMD("-arp", IFF_NOARP, setifflags), 2005 DEF_CMD("debug", IFF_DEBUG, setifflags), 2006 DEF_CMD("-debug", IFF_DEBUG, clearifflags), 2007 DEF_CMD_ARG("description", setifdescr), 2008 DEF_CMD_ARG("descr", setifdescr), 2009 DEF_CMD("-description", 0, unsetifdescr), 2010 DEF_CMD("-descr", 0, unsetifdescr), 2011 DEF_CMD("promisc", IFF_PPROMISC, setifflags), 2012 DEF_CMD("-promisc", IFF_PPROMISC, clearifflags), 2013 DEF_CMD("add", IFF_UP, notealias), 2014 DEF_CMD("alias", IFF_UP, notealias), 2015 DEF_CMD("-alias", -IFF_UP, notealias), 2016 DEF_CMD("delete", -IFF_UP, notealias), 2017 DEF_CMD("remove", -IFF_UP, notealias), 2018 #ifdef notdef 2019 #define EN_SWABIPS 0x1000 2020 DEF_CMD("swabips", EN_SWABIPS, setifflags), 2021 DEF_CMD("-swabips", EN_SWABIPS, clearifflags), 2022 #endif 2023 DEF_CMD_ARG("netmask", setifnetmask), 2024 DEF_CMD_ARG("metric", setifmetric), 2025 DEF_CMD_ARG("broadcast", setifbroadaddr), 2026 DEF_CMD_ARG2("tunnel", settunnel), 2027 DEF_CMD("-tunnel", 0, deletetunnel), 2028 DEF_CMD("deletetunnel", 0, deletetunnel), 2029 #ifdef JAIL 2030 DEF_CMD_ARG("vnet", setifvnet), 2031 DEF_CMD_ARG("-vnet", setifrvnet), 2032 #endif 2033 DEF_CMD("link0", IFF_LINK0, setifflags), 2034 DEF_CMD("-link0", IFF_LINK0, clearifflags), 2035 DEF_CMD("link1", IFF_LINK1, setifflags), 2036 DEF_CMD("-link1", IFF_LINK1, clearifflags), 2037 DEF_CMD("link2", IFF_LINK2, setifflags), 2038 DEF_CMD("-link2", IFF_LINK2, clearifflags), 2039 DEF_CMD("monitor", IFF_MONITOR, setifflags), 2040 DEF_CMD("-monitor", IFF_MONITOR, clearifflags), 2041 DEF_CMD("mextpg", IFCAP_MEXTPG, setifcap), 2042 DEF_CMD("-mextpg", IFCAP_MEXTPG, clearifcap), 2043 DEF_CMD("staticarp", IFF_STATICARP, setifflags), 2044 DEF_CMD("-staticarp", IFF_STATICARP, clearifflags), 2045 DEF_CMD("stickyarp", IFF_STICKYARP, setifflags), 2046 DEF_CMD("-stickyarp", IFF_STICKYARP, clearifflags), 2047 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap), 2048 DEF_CMD("-rxcsum6", IFCAP_RXCSUM_IPV6, clearifcap), 2049 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap), 2050 DEF_CMD("-txcsum6", IFCAP_TXCSUM_IPV6, clearifcap), 2051 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap), 2052 DEF_CMD("-rxcsum", IFCAP_RXCSUM, clearifcap), 2053 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap), 2054 DEF_CMD("-txcsum", IFCAP_TXCSUM, clearifcap), 2055 DEF_CMD("netcons", IFCAP_NETCONS, setifcap), 2056 DEF_CMD("-netcons", IFCAP_NETCONS, clearifcap), 2057 DEF_CMD_ARG("pcp", setifpcp), 2058 DEF_CMD("-pcp", 0, disableifpcp), 2059 DEF_CMD("polling", IFCAP_POLLING, setifcap), 2060 DEF_CMD("-polling", IFCAP_POLLING, clearifcap), 2061 DEF_CMD("tso6", IFCAP_TSO6, setifcap), 2062 DEF_CMD("-tso6", IFCAP_TSO6, clearifcap), 2063 DEF_CMD("tso4", IFCAP_TSO4, setifcap), 2064 DEF_CMD("-tso4", IFCAP_TSO4, clearifcap), 2065 DEF_CMD("tso", IFCAP_TSO, setifcap), 2066 DEF_CMD("-tso", IFCAP_TSO, clearifcap), 2067 DEF_CMD("toe", IFCAP_TOE, setifcap), 2068 DEF_CMD("-toe", IFCAP_TOE, clearifcap), 2069 DEF_CMD("lro", IFCAP_LRO, setifcap), 2070 DEF_CMD("-lro", IFCAP_LRO, clearifcap), 2071 DEF_CMD("txtls", IFCAP_TXTLS, setifcap), 2072 DEF_CMD("-txtls", IFCAP_TXTLS, clearifcap), 2073 DEF_CMD_SARG("rxtls", IFCAP2_RXTLS4_NAME "," IFCAP2_RXTLS6_NAME, 2074 setifcapnv), 2075 DEF_CMD_SARG("-rxtls", "-"IFCAP2_RXTLS4_NAME ",-" IFCAP2_RXTLS6_NAME, 2076 setifcapnv), 2077 DEF_CMD("wol", IFCAP_WOL, setifcap), 2078 DEF_CMD("-wol", IFCAP_WOL, clearifcap), 2079 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap), 2080 DEF_CMD("-wol_ucast", IFCAP_WOL_UCAST, clearifcap), 2081 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap), 2082 DEF_CMD("-wol_mcast", IFCAP_WOL_MCAST, clearifcap), 2083 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap), 2084 DEF_CMD("-wol_magic", IFCAP_WOL_MAGIC, clearifcap), 2085 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap), 2086 DEF_CMD("-txrtlmt", IFCAP_TXRTLMT, clearifcap), 2087 DEF_CMD("txtlsrtlmt", IFCAP_TXTLS_RTLMT, setifcap), 2088 DEF_CMD("-txtlsrtlmt", IFCAP_TXTLS_RTLMT, clearifcap), 2089 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap), 2090 DEF_CMD("-hwrxtstmp", IFCAP_HWRXTSTMP, clearifcap), 2091 DEF_CMD("normal", IFF_LINK0, clearifflags), 2092 DEF_CMD("compress", IFF_LINK0, setifflags), 2093 DEF_CMD("noicmp", IFF_LINK1, setifflags), 2094 DEF_CMD_ARG("mtu", setifmtu), 2095 DEF_CMD_ARG("name", setifname), 2096 }; 2097 2098 static __constructor void 2099 ifconfig_ctor(void) 2100 { 2101 size_t i; 2102 2103 for (i = 0; i < nitems(basic_cmds); i++) 2104 cmd_register(&basic_cmds[i]); 2105 } 2106