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 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94"; 41 #endif 42 static const char rcsid[] = 43 "$FreeBSD$"; 44 #endif /* not lint */ 45 46 #include <sys/param.h> 47 #include <sys/ioctl.h> 48 #include <sys/module.h> 49 #include <sys/linker.h> 50 #include <sys/queue.h> 51 #include <sys/socket.h> 52 #include <sys/time.h> 53 54 #include <net/ethernet.h> 55 #include <net/if.h> 56 #include <net/if_dl.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 <ifaddrs.h> 67 #include <ctype.h> 68 #include <err.h> 69 #include <errno.h> 70 #include <fcntl.h> 71 #ifdef JAIL 72 #include <jail.h> 73 #endif 74 #include <stdio.h> 75 #include <stdlib.h> 76 #include <string.h> 77 #include <unistd.h> 78 79 #include "ifconfig.h" 80 81 /* 82 * Since "struct ifreq" is composed of various union members, callers 83 * should pay special attention to interpret the value. 84 * (.e.g. little/big endian difference in the structure.) 85 */ 86 struct ifreq ifr; 87 88 char name[IFNAMSIZ]; 89 char *descr = NULL; 90 size_t descrlen = 64; 91 int setaddr; 92 int setmask; 93 int doalias; 94 int clearaddr; 95 int newaddr = 1; 96 int verbose; 97 int noload; 98 int printifname = 0; 99 100 int supmedia = 0; 101 int printkeys = 0; /* Print keying material for interfaces. */ 102 int exit_code = 0; 103 104 /* Formatter Strings */ 105 char *f_inet, *f_inet6, *f_ether, *f_addr; 106 107 static int ifconfig(int argc, char *const *argv, int iscreate, 108 const struct afswtch *afp); 109 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 110 struct ifaddrs *ifa); 111 static void tunnel_status(int s); 112 static _Noreturn void usage(void); 113 114 static int getifflags(const char *ifname, int us); 115 116 static struct afswtch *af_getbyname(const char *name); 117 static struct afswtch *af_getbyfamily(int af); 118 static void af_other_status(int); 119 120 void printifnamemaybe(void); 121 122 static struct option *opts = NULL; 123 124 struct ifa_order_elt { 125 int if_order; 126 int af_orders[255]; 127 struct ifaddrs *ifa; 128 TAILQ_ENTRY(ifa_order_elt) link; 129 }; 130 131 TAILQ_HEAD(ifa_queue, ifa_order_elt); 132 133 static struct module_map_entry { 134 const char *ifname; 135 const char *kldname; 136 } module_map[] = { 137 { 138 .ifname = "tun", 139 .kldname = "if_tuntap", 140 }, 141 { 142 .ifname = "tap", 143 .kldname = "if_tuntap", 144 }, 145 { 146 .ifname = "vmnet", 147 .kldname = "if_tuntap", 148 }, 149 }; 150 151 152 void 153 opt_register(struct option *p) 154 { 155 p->next = opts; 156 opts = p; 157 } 158 159 static void 160 usage(void) 161 { 162 char options[1024]; 163 struct option *p; 164 165 /* XXX not right but close enough for now */ 166 options[0] = '\0'; 167 for (p = opts; p != NULL; p = p->next) { 168 strlcat(options, p->opt_usage, sizeof(options)); 169 strlcat(options, " ", sizeof(options)); 170 } 171 172 fprintf(stderr, 173 "usage: ifconfig [-f type:format] %sinterface address_family\n" 174 " [address [dest_address]] [parameters]\n" 175 " ifconfig interface create\n" 176 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n" 177 " ifconfig -l [-d] [-u] [address_family]\n" 178 " ifconfig %s[-d] [-m] [-u] [-v]\n", 179 options, options, options); 180 exit(1); 181 } 182 183 #define ORDERS_SIZE(x) sizeof(x) / sizeof(x[0]) 184 185 static int 186 calcorders(struct ifaddrs *ifa, struct ifa_queue *q) 187 { 188 struct ifaddrs *prev; 189 struct ifa_order_elt *cur; 190 unsigned int ord, af, ifa_ord; 191 192 prev = NULL; 193 cur = NULL; 194 ord = 0; 195 ifa_ord = 0; 196 197 while (ifa != NULL) { 198 if (prev == NULL || 199 strcmp(ifa->ifa_name, prev->ifa_name) != 0) { 200 cur = calloc(1, sizeof(*cur)); 201 202 if (cur == NULL) 203 return (-1); 204 205 TAILQ_INSERT_TAIL(q, cur, link); 206 cur->if_order = ifa_ord ++; 207 cur->ifa = ifa; 208 ord = 0; 209 } 210 211 if (ifa->ifa_addr) { 212 af = ifa->ifa_addr->sa_family; 213 214 if (af < ORDERS_SIZE(cur->af_orders) && 215 cur->af_orders[af] == 0) 216 cur->af_orders[af] = ++ord; 217 } 218 prev = ifa; 219 ifa = ifa->ifa_next; 220 } 221 222 return (0); 223 } 224 225 static int 226 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q) 227 { 228 struct ifa_order_elt *cur, *e1, *e2; 229 unsigned int af1, af2; 230 int ret; 231 232 e1 = e2 = NULL; 233 234 ret = strcmp(a->ifa_name, b->ifa_name); 235 if (ret != 0) { 236 TAILQ_FOREACH(cur, q, link) { 237 if (e1 && e2) 238 break; 239 240 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) 241 e1 = cur; 242 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0) 243 e2 = cur; 244 } 245 246 if (!e1 || !e2) 247 return (0); 248 else 249 return (e1->if_order - e2->if_order); 250 251 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) { 252 TAILQ_FOREACH(cur, q, link) { 253 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) { 254 e1 = cur; 255 break; 256 } 257 } 258 259 if (!e1) 260 return (0); 261 262 af1 = a->ifa_addr->sa_family; 263 af2 = b->ifa_addr->sa_family; 264 265 if (af1 < ORDERS_SIZE(e1->af_orders) && 266 af2 < ORDERS_SIZE(e1->af_orders)) 267 return (e1->af_orders[af1] - e1->af_orders[af2]); 268 } 269 270 return (0); 271 } 272 273 static void freeformat(void) 274 { 275 276 if (f_inet != NULL) 277 free(f_inet); 278 if (f_inet6 != NULL) 279 free(f_inet6); 280 if (f_ether != NULL) 281 free(f_ether); 282 if (f_addr != NULL) 283 free(f_addr); 284 } 285 286 static void setformat(char *input) 287 { 288 char *formatstr, *category, *modifier; 289 290 formatstr = strdup(input); 291 while ((category = strsep(&formatstr, ",")) != NULL) { 292 modifier = strchr(category, ':'); 293 if (modifier == NULL || modifier[1] == '\0') { 294 warnx("Skipping invalid format specification: %s\n", 295 category); 296 continue; 297 } 298 299 /* Split the string on the separator, then seek past it */ 300 modifier[0] = '\0'; 301 modifier++; 302 303 if (strcmp(category, "addr") == 0) 304 f_addr = strdup(modifier); 305 else if (strcmp(category, "ether") == 0) 306 f_ether = strdup(modifier); 307 else if (strcmp(category, "inet") == 0) 308 f_inet = strdup(modifier); 309 else if (strcmp(category, "inet6") == 0) 310 f_inet6 = strdup(modifier); 311 } 312 free(formatstr); 313 } 314 315 #undef ORDERS_SIZE 316 317 static struct ifaddrs * 318 sortifaddrs(struct ifaddrs *list, 319 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *), 320 struct ifa_queue *q) 321 { 322 struct ifaddrs *right, *temp, *last, *result, *next, *tail; 323 324 right = list; 325 temp = list; 326 last = list; 327 result = NULL; 328 next = NULL; 329 tail = NULL; 330 331 if (!list || !list->ifa_next) 332 return (list); 333 334 while (temp && temp->ifa_next) { 335 last = right; 336 right = right->ifa_next; 337 temp = temp->ifa_next->ifa_next; 338 } 339 340 last->ifa_next = NULL; 341 342 list = sortifaddrs(list, compare, q); 343 right = sortifaddrs(right, compare, q); 344 345 while (list || right) { 346 347 if (!right) { 348 next = list; 349 list = list->ifa_next; 350 } else if (!list) { 351 next = right; 352 right = right->ifa_next; 353 } else if (compare(list, right, q) <= 0) { 354 next = list; 355 list = list->ifa_next; 356 } else { 357 next = right; 358 right = right->ifa_next; 359 } 360 361 if (!result) 362 result = next; 363 else 364 tail->ifa_next = next; 365 366 tail = next; 367 } 368 369 return (result); 370 } 371 372 void printifnamemaybe() 373 { 374 if (printifname) 375 printf("%s\n", name); 376 } 377 378 int 379 main(int argc, char *argv[]) 380 { 381 int c, all, namesonly, downonly, uponly; 382 const struct afswtch *afp = NULL; 383 int ifindex; 384 struct ifaddrs *ifap, *sifap, *ifa; 385 struct ifreq paifr; 386 const struct sockaddr_dl *sdl; 387 char options[1024], *cp, *envformat, *namecp = NULL; 388 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q); 389 struct ifa_order_elt *cur, *tmp; 390 const char *ifname; 391 struct option *p; 392 size_t iflen; 393 int flags; 394 395 all = downonly = uponly = namesonly = noload = verbose = 0; 396 f_inet = f_inet6 = f_ether = f_addr = NULL; 397 398 envformat = getenv("IFCONFIG_FORMAT"); 399 if (envformat != NULL) 400 setformat(envformat); 401 402 /* 403 * Ensure we print interface name when expected to, 404 * even if we terminate early due to error. 405 */ 406 atexit(printifnamemaybe); 407 408 /* Parse leading line options */ 409 strlcpy(options, "f:adklmnuv", sizeof(options)); 410 for (p = opts; p != NULL; p = p->next) 411 strlcat(options, p->opt, sizeof(options)); 412 while ((c = getopt(argc, argv, options)) != -1) { 413 switch (c) { 414 case 'a': /* scan all interfaces */ 415 all++; 416 break; 417 case 'd': /* restrict scan to "down" interfaces */ 418 downonly++; 419 break; 420 case 'f': 421 if (optarg == NULL) 422 usage(); 423 setformat(optarg); 424 break; 425 case 'k': 426 printkeys++; 427 break; 428 case 'l': /* scan interface names only */ 429 namesonly++; 430 break; 431 case 'm': /* show media choices in status */ 432 supmedia = 1; 433 break; 434 case 'n': /* suppress module loading */ 435 noload++; 436 break; 437 case 'u': /* restrict scan to "up" interfaces */ 438 uponly++; 439 break; 440 case 'v': 441 verbose++; 442 break; 443 default: 444 for (p = opts; p != NULL; p = p->next) 445 if (p->opt[0] == c) { 446 p->cb(optarg); 447 break; 448 } 449 if (p == NULL) 450 usage(); 451 break; 452 } 453 } 454 argc -= optind; 455 argv += optind; 456 457 /* -l cannot be used with -a or -m */ 458 if (namesonly && (all || supmedia)) 459 usage(); 460 461 /* nonsense.. */ 462 if (uponly && downonly) 463 usage(); 464 465 /* no arguments is equivalent to '-a' */ 466 if (!namesonly && argc < 1) 467 all = 1; 468 469 /* -a and -l allow an address family arg to limit the output */ 470 if (all || namesonly) { 471 if (argc > 1) 472 usage(); 473 474 ifname = NULL; 475 ifindex = 0; 476 if (argc == 1) { 477 afp = af_getbyname(*argv); 478 if (afp == NULL) { 479 warnx("Address family '%s' unknown.", *argv); 480 usage(); 481 } 482 if (afp->af_name != NULL) 483 argc--, argv++; 484 /* leave with afp non-zero */ 485 } 486 } else { 487 /* not listing, need an argument */ 488 if (argc < 1) 489 usage(); 490 491 ifname = *argv; 492 argc--, argv++; 493 494 /* check and maybe load support for this interface */ 495 ifmaybeload(ifname); 496 497 ifindex = if_nametoindex(ifname); 498 if (ifindex == 0) { 499 /* 500 * NOTE: We must special-case the `create' command 501 * right here as we would otherwise fail when trying 502 * to find the interface. 503 */ 504 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 505 strcmp(argv[0], "plumb") == 0)) { 506 iflen = strlcpy(name, ifname, sizeof(name)); 507 if (iflen >= sizeof(name)) 508 errx(1, "%s: cloning name too long", 509 ifname); 510 ifconfig(argc, argv, 1, NULL); 511 exit(exit_code); 512 } 513 #ifdef JAIL 514 /* 515 * NOTE: We have to special-case the `-vnet' command 516 * right here as we would otherwise fail when trying 517 * to find the interface as it lives in another vnet. 518 */ 519 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) { 520 iflen = strlcpy(name, ifname, sizeof(name)); 521 if (iflen >= sizeof(name)) 522 errx(1, "%s: interface name too long", 523 ifname); 524 ifconfig(argc, argv, 0, NULL); 525 exit(exit_code); 526 } 527 #endif 528 errx(1, "interface %s does not exist", ifname); 529 } else { 530 /* 531 * Do not allow use `create` command as hostname if 532 * address family is not specified. 533 */ 534 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 535 strcmp(argv[0], "plumb") == 0)) { 536 if (argc == 1) 537 errx(1, "interface %s already exists", 538 ifname); 539 argc--, argv++; 540 } 541 } 542 } 543 544 /* Check for address family */ 545 if (argc > 0) { 546 afp = af_getbyname(*argv); 547 if (afp != NULL) 548 argc--, argv++; 549 } 550 551 /* 552 * Check for a requested configuration action on a single interface, 553 * which doesn't require building, sorting, and searching the entire 554 * system address list 555 */ 556 if ((argc > 0) && (ifname != NULL)) { 557 iflen = strlcpy(name, ifname, sizeof(name)); 558 if (iflen >= sizeof(name)) { 559 warnx("%s: interface name too long, skipping", ifname); 560 } else { 561 flags = getifflags(name, -1); 562 if (!(((flags & IFF_CANTCONFIG) != 0) || 563 (downonly && (flags & IFF_UP) != 0) || 564 (uponly && (flags & IFF_UP) == 0))) 565 ifconfig(argc, argv, 0, afp); 566 } 567 goto done; 568 } 569 570 if (getifaddrs(&ifap) != 0) 571 err(EXIT_FAILURE, "getifaddrs"); 572 573 cp = NULL; 574 575 if (calcorders(ifap, &q) != 0) 576 err(EXIT_FAILURE, "calcorders"); 577 578 sifap = sortifaddrs(ifap, cmpifaddrs, &q); 579 580 TAILQ_FOREACH_SAFE(cur, &q, link, tmp) 581 free(cur); 582 583 ifindex = 0; 584 for (ifa = sifap; ifa; ifa = ifa->ifa_next) { 585 memset(&paifr, 0, sizeof(paifr)); 586 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name)); 587 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) { 588 memcpy(&paifr.ifr_addr, ifa->ifa_addr, 589 ifa->ifa_addr->sa_len); 590 } 591 592 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0) 593 continue; 594 if (ifa->ifa_addr->sa_family == AF_LINK) 595 sdl = (const struct sockaddr_dl *) ifa->ifa_addr; 596 else 597 sdl = NULL; 598 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly) 599 continue; 600 iflen = strlcpy(name, ifa->ifa_name, sizeof(name)); 601 if (iflen >= sizeof(name)) { 602 warnx("%s: interface name too long, skipping", 603 ifa->ifa_name); 604 continue; 605 } 606 cp = ifa->ifa_name; 607 608 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0) 609 continue; 610 if (downonly && (ifa->ifa_flags & IFF_UP) != 0) 611 continue; 612 if (uponly && (ifa->ifa_flags & IFF_UP) == 0) 613 continue; 614 /* 615 * Are we just listing the interfaces? 616 */ 617 if (namesonly) { 618 if (namecp == cp) 619 continue; 620 if (afp != NULL) { 621 /* special case for "ether" address family */ 622 if (!strcmp(afp->af_name, "ether")) { 623 if (sdl == NULL || 624 (sdl->sdl_type != IFT_ETHER && 625 sdl->sdl_type != IFT_L2VLAN && 626 sdl->sdl_type != IFT_BRIDGE) || 627 sdl->sdl_alen != ETHER_ADDR_LEN) 628 continue; 629 } else { 630 if (ifa->ifa_addr->sa_family 631 != afp->af_af) 632 continue; 633 } 634 } 635 namecp = cp; 636 ifindex++; 637 if (ifindex > 1) 638 printf(" "); 639 fputs(name, stdout); 640 continue; 641 } 642 ifindex++; 643 644 if (argc > 0) 645 ifconfig(argc, argv, 0, afp); 646 else 647 status(afp, sdl, ifa); 648 } 649 if (namesonly) 650 printf("\n"); 651 freeifaddrs(ifap); 652 653 done: 654 freeformat(); 655 exit(exit_code); 656 } 657 658 static struct afswtch *afs = NULL; 659 660 void 661 af_register(struct afswtch *p) 662 { 663 p->af_next = afs; 664 afs = p; 665 } 666 667 static struct afswtch * 668 af_getbyname(const char *name) 669 { 670 struct afswtch *afp; 671 672 for (afp = afs; afp != NULL; afp = afp->af_next) 673 if (strcmp(afp->af_name, name) == 0) 674 return afp; 675 return NULL; 676 } 677 678 static struct afswtch * 679 af_getbyfamily(int af) 680 { 681 struct afswtch *afp; 682 683 for (afp = afs; afp != NULL; afp = afp->af_next) 684 if (afp->af_af == af) 685 return afp; 686 return NULL; 687 } 688 689 static void 690 af_other_status(int s) 691 { 692 struct afswtch *afp; 693 uint8_t afmask[howmany(AF_MAX, NBBY)]; 694 695 memset(afmask, 0, sizeof(afmask)); 696 for (afp = afs; afp != NULL; afp = afp->af_next) { 697 if (afp->af_other_status == NULL) 698 continue; 699 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 700 continue; 701 afp->af_other_status(s); 702 setbit(afmask, afp->af_af); 703 } 704 } 705 706 static void 707 af_all_tunnel_status(int s) 708 { 709 struct afswtch *afp; 710 uint8_t afmask[howmany(AF_MAX, NBBY)]; 711 712 memset(afmask, 0, sizeof(afmask)); 713 for (afp = afs; afp != NULL; afp = afp->af_next) { 714 if (afp->af_status_tunnel == NULL) 715 continue; 716 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 717 continue; 718 afp->af_status_tunnel(s); 719 setbit(afmask, afp->af_af); 720 } 721 } 722 723 static struct cmd *cmds = NULL; 724 725 void 726 cmd_register(struct cmd *p) 727 { 728 p->c_next = cmds; 729 cmds = p; 730 } 731 732 static const struct cmd * 733 cmd_lookup(const char *name, int iscreate) 734 { 735 const struct cmd *p; 736 737 for (p = cmds; p != NULL; p = p->c_next) 738 if (strcmp(name, p->c_name) == 0) { 739 if (iscreate) { 740 if (p->c_iscloneop) 741 return p; 742 } else { 743 if (!p->c_iscloneop) 744 return p; 745 } 746 } 747 return NULL; 748 } 749 750 struct callback { 751 callback_func *cb_func; 752 void *cb_arg; 753 struct callback *cb_next; 754 }; 755 static struct callback *callbacks = NULL; 756 757 void 758 callback_register(callback_func *func, void *arg) 759 { 760 struct callback *cb; 761 762 cb = malloc(sizeof(struct callback)); 763 if (cb == NULL) 764 errx(1, "unable to allocate memory for callback"); 765 cb->cb_func = func; 766 cb->cb_arg = arg; 767 cb->cb_next = callbacks; 768 callbacks = cb; 769 } 770 771 /* specially-handled commands */ 772 static void setifaddr(const char *, int, int, const struct afswtch *); 773 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr); 774 775 static void setifdstaddr(const char *, int, int, const struct afswtch *); 776 static const struct cmd setifdstaddr_cmd = 777 DEF_CMD("ifdstaddr", 0, setifdstaddr); 778 779 static int 780 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp) 781 { 782 const struct afswtch *afp, *nafp; 783 const struct cmd *p; 784 struct callback *cb; 785 int s; 786 787 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 788 afp = NULL; 789 if (uafp != NULL) 790 afp = uafp; 791 /* 792 * This is the historical "accident" allowing users to configure IPv4 793 * addresses without the "inet" keyword which while a nice feature has 794 * proven to complicate other things. We cannot remove this but only 795 * make sure we will never have a similar implicit default for IPv6 or 796 * any other address familiy. We need a fallback though for 797 * ifconfig IF up/down etc. to work without INET support as people 798 * never used ifconfig IF link up/down, etc. either. 799 */ 800 #ifndef RESCUE 801 #ifdef INET 802 if (afp == NULL && feature_present("inet")) 803 afp = af_getbyname("inet"); 804 #endif 805 #endif 806 if (afp == NULL) 807 afp = af_getbyname("link"); 808 if (afp == NULL) { 809 warnx("Please specify an address_family."); 810 usage(); 811 } 812 top: 813 ifr.ifr_addr.sa_family = 814 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ? 815 AF_LOCAL : afp->af_af; 816 817 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 && 818 (uafp != NULL || errno != EAFNOSUPPORT || 819 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)) 820 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 821 822 while (argc > 0) { 823 p = cmd_lookup(*argv, iscreate); 824 if (iscreate && p == NULL) { 825 /* 826 * Push the clone create callback so the new 827 * device is created and can be used for any 828 * remaining arguments. 829 */ 830 cb = callbacks; 831 if (cb == NULL) 832 errx(1, "internal error, no callback"); 833 callbacks = cb->cb_next; 834 cb->cb_func(s, cb->cb_arg); 835 iscreate = 0; 836 /* 837 * Handle any address family spec that 838 * immediately follows and potentially 839 * recreate the socket. 840 */ 841 nafp = af_getbyname(*argv); 842 if (nafp != NULL) { 843 argc--, argv++; 844 if (nafp != afp) { 845 close(s); 846 afp = nafp; 847 goto top; 848 } 849 } 850 /* 851 * Look for a normal parameter. 852 */ 853 continue; 854 } 855 if (p == NULL) { 856 /* 857 * Not a recognized command, choose between setting 858 * the interface address and the dst address. 859 */ 860 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd); 861 } 862 if (p->c_parameter == NEXTARG && p->c_u.c_func) { 863 if (argv[1] == NULL) 864 errx(1, "'%s' requires argument", 865 p->c_name); 866 p->c_u.c_func(argv[1], 0, s, afp); 867 argc--, argv++; 868 } else if (p->c_parameter == OPTARG && p->c_u.c_func) { 869 p->c_u.c_func(argv[1], 0, s, afp); 870 if (argv[1] != NULL) 871 argc--, argv++; 872 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) { 873 if (argc < 3) 874 errx(1, "'%s' requires 2 arguments", 875 p->c_name); 876 p->c_u.c_func2(argv[1], argv[2], s, afp); 877 argc -= 2, argv += 2; 878 } else if (p->c_u.c_func) 879 p->c_u.c_func(*argv, p->c_parameter, s, afp); 880 argc--, argv++; 881 } 882 883 /* 884 * Do any post argument processing required by the address family. 885 */ 886 if (afp->af_postproc != NULL) 887 afp->af_postproc(s, afp); 888 /* 889 * Do deferred callbacks registered while processing 890 * command-line arguments. 891 */ 892 for (cb = callbacks; cb != NULL; cb = cb->cb_next) 893 cb->cb_func(s, cb->cb_arg); 894 /* 895 * Do deferred operations. 896 */ 897 if (clearaddr) { 898 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) { 899 warnx("interface %s cannot change %s addresses!", 900 name, afp->af_name); 901 clearaddr = 0; 902 } 903 } 904 if (clearaddr) { 905 int ret; 906 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name, 907 sizeof ifr.ifr_name); 908 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq); 909 if (ret < 0) { 910 if (errno == EADDRNOTAVAIL && (doalias >= 0)) { 911 /* means no previous address for interface */ 912 } else 913 Perror("ioctl (SIOCDIFADDR)"); 914 } 915 } 916 if (newaddr) { 917 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) { 918 warnx("interface %s cannot change %s addresses!", 919 name, afp->af_name); 920 newaddr = 0; 921 } 922 } 923 if (newaddr && (setaddr || setmask)) { 924 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name, 925 sizeof ifr.ifr_name); 926 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0) 927 Perror("ioctl (SIOCAIFADDR)"); 928 } 929 930 close(s); 931 return(0); 932 } 933 934 /*ARGSUSED*/ 935 static void 936 setifaddr(const char *addr, int param, int s, const struct afswtch *afp) 937 { 938 if (afp->af_getaddr == NULL) 939 return; 940 /* 941 * Delay the ioctl to set the interface addr until flags are all set. 942 * The address interpretation may depend on the flags, 943 * and the flags may change when the address is set. 944 */ 945 setaddr++; 946 if (doalias == 0 && afp->af_af != AF_LINK) 947 clearaddr = 1; 948 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR)); 949 } 950 951 static void 952 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp) 953 { 954 struct addrinfo *srcres, *dstres; 955 int ecode; 956 957 if (afp->af_settunnel == NULL) { 958 warn("address family %s does not support tunnel setup", 959 afp->af_name); 960 return; 961 } 962 963 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0) 964 errx(1, "error in parsing address string: %s", 965 gai_strerror(ecode)); 966 967 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0) 968 errx(1, "error in parsing address string: %s", 969 gai_strerror(ecode)); 970 971 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family) 972 errx(1, 973 "source and destination address families do not match"); 974 975 afp->af_settunnel(s, srcres, dstres); 976 977 freeaddrinfo(srcres); 978 freeaddrinfo(dstres); 979 } 980 981 /* ARGSUSED */ 982 static void 983 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp) 984 { 985 986 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0) 987 err(1, "SIOCDIFPHYADDR"); 988 } 989 990 #ifdef JAIL 991 static void 992 setifvnet(const char *jname, int dummy __unused, int s, 993 const struct afswtch *afp) 994 { 995 struct ifreq my_ifr; 996 997 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 998 my_ifr.ifr_jid = jail_getid(jname); 999 if (my_ifr.ifr_jid < 0) 1000 errx(1, "%s", jail_errmsg); 1001 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0) 1002 err(1, "SIOCSIFVNET"); 1003 } 1004 1005 static void 1006 setifrvnet(const char *jname, int dummy __unused, int s, 1007 const struct afswtch *afp) 1008 { 1009 struct ifreq my_ifr; 1010 1011 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1012 my_ifr.ifr_jid = jail_getid(jname); 1013 if (my_ifr.ifr_jid < 0) 1014 errx(1, "%s", jail_errmsg); 1015 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0) 1016 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name); 1017 } 1018 #endif 1019 1020 static void 1021 setifnetmask(const char *addr, int dummy __unused, int s, 1022 const struct afswtch *afp) 1023 { 1024 if (afp->af_getaddr != NULL) { 1025 setmask++; 1026 afp->af_getaddr(addr, MASK); 1027 } 1028 } 1029 1030 static void 1031 setifbroadaddr(const char *addr, int dummy __unused, int s, 1032 const struct afswtch *afp) 1033 { 1034 if (afp->af_getaddr != NULL) 1035 afp->af_getaddr(addr, DSTADDR); 1036 } 1037 1038 static void 1039 notealias(const char *addr, int param, int s, const struct afswtch *afp) 1040 { 1041 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr)) 1042 if (setaddr && doalias == 0 && param < 0) 1043 if (afp->af_addreq != NULL && afp->af_ridreq != NULL) 1044 bcopy((caddr_t)rqtosa(af_addreq), 1045 (caddr_t)rqtosa(af_ridreq), 1046 rqtosa(af_addreq)->sa_len); 1047 doalias = param; 1048 if (param < 0) { 1049 clearaddr = 1; 1050 newaddr = 0; 1051 } else 1052 clearaddr = 0; 1053 #undef rqtosa 1054 } 1055 1056 /*ARGSUSED*/ 1057 static void 1058 setifdstaddr(const char *addr, int param __unused, int s, 1059 const struct afswtch *afp) 1060 { 1061 if (afp->af_getaddr != NULL) 1062 afp->af_getaddr(addr, DSTADDR); 1063 } 1064 1065 static int 1066 getifflags(const char *ifname, int us) 1067 { 1068 struct ifreq my_ifr; 1069 int s; 1070 1071 memset(&my_ifr, 0, sizeof(my_ifr)); 1072 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name)); 1073 if (us < 0) { 1074 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) 1075 err(1, "socket(family AF_LOCAL,SOCK_DGRAM"); 1076 } else 1077 s = us; 1078 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { 1079 Perror("ioctl (SIOCGIFFLAGS)"); 1080 exit(1); 1081 } 1082 if (us < 0) 1083 close(s); 1084 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16)); 1085 } 1086 1087 /* 1088 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion 1089 * of the ifreq structure, which may confuse other parts of ifconfig. 1090 * Make a private copy so we can avoid that. 1091 */ 1092 static void 1093 setifflags(const char *vname, int value, int s, const struct afswtch *afp) 1094 { 1095 struct ifreq my_ifr; 1096 int flags; 1097 1098 flags = getifflags(name, s); 1099 if (value < 0) { 1100 value = -value; 1101 flags &= ~value; 1102 } else 1103 flags |= value; 1104 memset(&my_ifr, 0, sizeof(my_ifr)); 1105 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name)); 1106 my_ifr.ifr_flags = flags & 0xffff; 1107 my_ifr.ifr_flagshigh = flags >> 16; 1108 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1109 Perror(vname); 1110 } 1111 1112 void 1113 setifcap(const char *vname, int value, int s, const struct afswtch *afp) 1114 { 1115 int flags; 1116 1117 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) { 1118 Perror("ioctl (SIOCGIFCAP)"); 1119 exit(1); 1120 } 1121 flags = ifr.ifr_curcap; 1122 if (value < 0) { 1123 value = -value; 1124 flags &= ~value; 1125 } else 1126 flags |= value; 1127 flags &= ifr.ifr_reqcap; 1128 ifr.ifr_reqcap = flags; 1129 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0) 1130 Perror(vname); 1131 } 1132 1133 static void 1134 setifmetric(const char *val, int dummy __unused, int s, 1135 const struct afswtch *afp) 1136 { 1137 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1138 ifr.ifr_metric = atoi(val); 1139 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) 1140 err(1, "ioctl SIOCSIFMETRIC (set metric)"); 1141 } 1142 1143 static void 1144 setifmtu(const char *val, int dummy __unused, int s, 1145 const struct afswtch *afp) 1146 { 1147 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1148 ifr.ifr_mtu = atoi(val); 1149 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0) 1150 err(1, "ioctl SIOCSIFMTU (set mtu)"); 1151 } 1152 1153 static void 1154 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp) 1155 { 1156 u_long ul; 1157 char *endp; 1158 1159 ul = strtoul(val, &endp, 0); 1160 if (*endp != '\0') 1161 errx(1, "invalid value for pcp"); 1162 if (ul > 7) 1163 errx(1, "value for pcp out of range"); 1164 ifr.ifr_lan_pcp = ul; 1165 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1166 err(1, "SIOCSLANPCP"); 1167 } 1168 1169 static void 1170 disableifpcp(const char *val, int arg __unused, int s, 1171 const struct afswtch *afp) 1172 { 1173 1174 ifr.ifr_lan_pcp = IFNET_PCP_NONE; 1175 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1176 err(1, "SIOCSLANPCP"); 1177 } 1178 1179 static void 1180 setifname(const char *val, int dummy __unused, int s, 1181 const struct afswtch *afp) 1182 { 1183 char *newname; 1184 1185 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1186 1187 newname = strdup(val); 1188 if (newname == NULL) 1189 err(1, "no memory to set ifname"); 1190 ifr.ifr_data = newname; 1191 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 1192 free(newname); 1193 err(1, "ioctl SIOCSIFNAME (set name)"); 1194 } 1195 printifname = 1; 1196 strlcpy(name, newname, sizeof(name)); 1197 free(newname); 1198 } 1199 1200 /* ARGSUSED */ 1201 static void 1202 setifdescr(const char *val, int dummy __unused, int s, 1203 const struct afswtch *afp) 1204 { 1205 char *newdescr; 1206 1207 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1208 1209 ifr.ifr_buffer.length = strlen(val) + 1; 1210 if (ifr.ifr_buffer.length == 1) { 1211 ifr.ifr_buffer.buffer = newdescr = NULL; 1212 ifr.ifr_buffer.length = 0; 1213 } else { 1214 newdescr = strdup(val); 1215 ifr.ifr_buffer.buffer = newdescr; 1216 if (newdescr == NULL) { 1217 warn("no memory to set ifdescr"); 1218 return; 1219 } 1220 } 1221 1222 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0) 1223 err(1, "ioctl SIOCSIFDESCR (set descr)"); 1224 1225 free(newdescr); 1226 } 1227 1228 /* ARGSUSED */ 1229 static void 1230 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp) 1231 { 1232 1233 setifdescr("", 0, s, 0); 1234 } 1235 1236 #define IFFBITS \ 1237 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \ 1238 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \ 1239 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP" 1240 1241 #define IFCAPBITS \ 1242 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \ 1243 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \ 1244 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \ 1245 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP" 1246 1247 /* 1248 * Print the status of the interface. If an address family was 1249 * specified, show only it; otherwise, show them all. 1250 */ 1251 static void 1252 status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 1253 struct ifaddrs *ifa) 1254 { 1255 struct ifaddrs *ift; 1256 int allfamilies, s; 1257 struct ifstat ifs; 1258 1259 if (afp == NULL) { 1260 allfamilies = 1; 1261 ifr.ifr_addr.sa_family = AF_LOCAL; 1262 } else { 1263 allfamilies = 0; 1264 ifr.ifr_addr.sa_family = 1265 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af; 1266 } 1267 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1268 1269 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); 1270 if (s < 0) 1271 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1272 1273 printf("%s: ", name); 1274 printb("flags", ifa->ifa_flags, IFFBITS); 1275 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1) 1276 printf(" metric %d", ifr.ifr_metric); 1277 if (ioctl(s, SIOCGIFMTU, &ifr) != -1) 1278 printf(" mtu %d", ifr.ifr_mtu); 1279 putchar('\n'); 1280 1281 for (;;) { 1282 if ((descr = reallocf(descr, descrlen)) != NULL) { 1283 ifr.ifr_buffer.buffer = descr; 1284 ifr.ifr_buffer.length = descrlen; 1285 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) { 1286 if (ifr.ifr_buffer.buffer == descr) { 1287 if (strlen(descr) > 0) 1288 printf("\tdescription: %s\n", 1289 descr); 1290 } else if (ifr.ifr_buffer.length > descrlen) { 1291 descrlen = ifr.ifr_buffer.length; 1292 continue; 1293 } 1294 } 1295 } else 1296 warn("unable to allocate memory for interface" 1297 "description"); 1298 break; 1299 } 1300 1301 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) { 1302 if (ifr.ifr_curcap != 0) { 1303 printb("\toptions", ifr.ifr_curcap, IFCAPBITS); 1304 putchar('\n'); 1305 } 1306 if (supmedia && ifr.ifr_reqcap != 0) { 1307 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS); 1308 putchar('\n'); 1309 } 1310 } 1311 1312 tunnel_status(s); 1313 1314 for (ift = ifa; ift != NULL; ift = ift->ifa_next) { 1315 if (ift->ifa_addr == NULL) 1316 continue; 1317 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0) 1318 continue; 1319 if (allfamilies) { 1320 const struct afswtch *p; 1321 p = af_getbyfamily(ift->ifa_addr->sa_family); 1322 if (p != NULL && p->af_status != NULL) 1323 p->af_status(s, ift); 1324 } else if (afp->af_af == ift->ifa_addr->sa_family) 1325 afp->af_status(s, ift); 1326 } 1327 #if 0 1328 if (allfamilies || afp->af_af == AF_LINK) { 1329 const struct afswtch *lafp; 1330 1331 /* 1332 * Hack; the link level address is received separately 1333 * from the routing information so any address is not 1334 * handled above. Cobble together an entry and invoke 1335 * the status method specially. 1336 */ 1337 lafp = af_getbyname("lladdr"); 1338 if (lafp != NULL) { 1339 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl; 1340 lafp->af_status(s, &info); 1341 } 1342 } 1343 #endif 1344 if (allfamilies) 1345 af_other_status(s); 1346 else if (afp->af_other_status != NULL) 1347 afp->af_other_status(s); 1348 1349 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name); 1350 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0) 1351 printf("%s", ifs.ascii); 1352 1353 if (verbose > 0) 1354 sfp_status(s, &ifr, verbose); 1355 1356 close(s); 1357 return; 1358 } 1359 1360 static void 1361 tunnel_status(int s) 1362 { 1363 af_all_tunnel_status(s); 1364 } 1365 1366 void 1367 Perror(const char *cmd) 1368 { 1369 switch (errno) { 1370 1371 case ENXIO: 1372 errx(1, "%s: no such interface", cmd); 1373 break; 1374 1375 case EPERM: 1376 errx(1, "%s: permission denied", cmd); 1377 break; 1378 1379 default: 1380 err(1, "%s", cmd); 1381 } 1382 } 1383 1384 /* 1385 * Print a value a la the %b format of the kernel's printf 1386 */ 1387 void 1388 printb(const char *s, unsigned v, const char *bits) 1389 { 1390 int i, any = 0; 1391 char c; 1392 1393 if (bits && *bits == 8) 1394 printf("%s=%o", s, v); 1395 else 1396 printf("%s=%x", s, v); 1397 if (bits) { 1398 bits++; 1399 putchar('<'); 1400 while ((i = *bits++) != '\0') { 1401 if (v & (1 << (i-1))) { 1402 if (any) 1403 putchar(','); 1404 any = 1; 1405 for (; (c = *bits) > 32; bits++) 1406 putchar(c); 1407 } else 1408 for (; *bits > 32; bits++) 1409 ; 1410 } 1411 putchar('>'); 1412 } 1413 } 1414 1415 void 1416 print_vhid(const struct ifaddrs *ifa, const char *s) 1417 { 1418 struct if_data *ifd; 1419 1420 if (ifa->ifa_data == NULL) 1421 return; 1422 1423 ifd = ifa->ifa_data; 1424 if (ifd->ifi_vhid == 0) 1425 return; 1426 1427 printf(" vhid %d", ifd->ifi_vhid); 1428 } 1429 1430 void 1431 ifmaybeload(const char *name) 1432 { 1433 #define MOD_PREFIX_LEN 3 /* "if_" */ 1434 struct module_stat mstat; 1435 int i, fileid, modid; 1436 char ifname[IFNAMSIZ], *ifkind, *dp; 1437 const char *cp; 1438 struct module_map_entry *mme; 1439 1440 /* loading suppressed by the user */ 1441 if (noload) 1442 return; 1443 1444 /* trim the interface number off the end */ 1445 strlcpy(ifname, name, sizeof(ifname)); 1446 for (dp = ifname; *dp != 0; dp++) 1447 if (isdigit(*dp)) { 1448 *dp = 0; 1449 break; 1450 } 1451 1452 /* Either derive it from the map or guess otherwise */ 1453 ifkind = NULL; 1454 for (i = 0; i < nitems(module_map); ++i) { 1455 mme = &module_map[i]; 1456 if (strcmp(mme->ifname, ifname) == 0) { 1457 ifkind = strdup(mme->kldname); 1458 if (ifkind == NULL) 1459 err(EXIT_FAILURE, "ifmaybeload"); 1460 break; 1461 } 1462 } 1463 1464 /* We didn't have an alias for it... we'll guess. */ 1465 if (ifkind == NULL) { 1466 ifkind = malloc(IFNAMSIZ + MOD_PREFIX_LEN); 1467 1468 /* turn interface and unit into module name */ 1469 strlcpy(ifkind, "if_", sizeof(ifkind)); 1470 strlcat(ifkind, ifname, sizeof(ifkind)); 1471 } 1472 1473 /* scan files in kernel */ 1474 mstat.version = sizeof(struct module_stat); 1475 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) { 1476 /* scan modules in file */ 1477 for (modid = kldfirstmod(fileid); modid > 0; 1478 modid = modfnext(modid)) { 1479 if (modstat(modid, &mstat) < 0) 1480 continue; 1481 /* strip bus name if present */ 1482 if ((cp = strchr(mstat.name, '/')) != NULL) { 1483 cp++; 1484 } else { 1485 cp = mstat.name; 1486 } 1487 /* already loaded? */ 1488 if (strcmp(ifname, cp) == 0 || 1489 strcmp(ifkind, cp) == 0) 1490 goto out; 1491 } 1492 } 1493 1494 /* 1495 * Try to load the module. But ignore failures, because ifconfig can't 1496 * infer the names of all drivers (eg mlx4en(4)). 1497 */ 1498 (void) kldload(ifkind); 1499 out: 1500 free(ifkind); 1501 } 1502 1503 static struct cmd basic_cmds[] = { 1504 DEF_CMD("up", IFF_UP, setifflags), 1505 DEF_CMD("down", -IFF_UP, setifflags), 1506 DEF_CMD("arp", -IFF_NOARP, setifflags), 1507 DEF_CMD("-arp", IFF_NOARP, setifflags), 1508 DEF_CMD("debug", IFF_DEBUG, setifflags), 1509 DEF_CMD("-debug", -IFF_DEBUG, setifflags), 1510 DEF_CMD_ARG("description", setifdescr), 1511 DEF_CMD_ARG("descr", setifdescr), 1512 DEF_CMD("-description", 0, unsetifdescr), 1513 DEF_CMD("-descr", 0, unsetifdescr), 1514 DEF_CMD("promisc", IFF_PPROMISC, setifflags), 1515 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags), 1516 DEF_CMD("add", IFF_UP, notealias), 1517 DEF_CMD("alias", IFF_UP, notealias), 1518 DEF_CMD("-alias", -IFF_UP, notealias), 1519 DEF_CMD("delete", -IFF_UP, notealias), 1520 DEF_CMD("remove", -IFF_UP, notealias), 1521 #ifdef notdef 1522 #define EN_SWABIPS 0x1000 1523 DEF_CMD("swabips", EN_SWABIPS, setifflags), 1524 DEF_CMD("-swabips", -EN_SWABIPS, setifflags), 1525 #endif 1526 DEF_CMD_ARG("netmask", setifnetmask), 1527 DEF_CMD_ARG("metric", setifmetric), 1528 DEF_CMD_ARG("broadcast", setifbroadaddr), 1529 DEF_CMD_ARG2("tunnel", settunnel), 1530 DEF_CMD("-tunnel", 0, deletetunnel), 1531 DEF_CMD("deletetunnel", 0, deletetunnel), 1532 #ifdef JAIL 1533 DEF_CMD_ARG("vnet", setifvnet), 1534 DEF_CMD_ARG("-vnet", setifrvnet), 1535 #endif 1536 DEF_CMD("link0", IFF_LINK0, setifflags), 1537 DEF_CMD("-link0", -IFF_LINK0, setifflags), 1538 DEF_CMD("link1", IFF_LINK1, setifflags), 1539 DEF_CMD("-link1", -IFF_LINK1, setifflags), 1540 DEF_CMD("link2", IFF_LINK2, setifflags), 1541 DEF_CMD("-link2", -IFF_LINK2, setifflags), 1542 DEF_CMD("monitor", IFF_MONITOR, setifflags), 1543 DEF_CMD("-monitor", -IFF_MONITOR, setifflags), 1544 DEF_CMD("staticarp", IFF_STATICARP, setifflags), 1545 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags), 1546 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap), 1547 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap), 1548 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap), 1549 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap), 1550 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap), 1551 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap), 1552 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap), 1553 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap), 1554 DEF_CMD("netcons", IFCAP_NETCONS, setifcap), 1555 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap), 1556 DEF_CMD_ARG("pcp", setifpcp), 1557 DEF_CMD("-pcp", 0, disableifpcp), 1558 DEF_CMD("polling", IFCAP_POLLING, setifcap), 1559 DEF_CMD("-polling", -IFCAP_POLLING, setifcap), 1560 DEF_CMD("tso6", IFCAP_TSO6, setifcap), 1561 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap), 1562 DEF_CMD("tso4", IFCAP_TSO4, setifcap), 1563 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap), 1564 DEF_CMD("tso", IFCAP_TSO, setifcap), 1565 DEF_CMD("-tso", -IFCAP_TSO, setifcap), 1566 DEF_CMD("toe", IFCAP_TOE, setifcap), 1567 DEF_CMD("-toe", -IFCAP_TOE, setifcap), 1568 DEF_CMD("lro", IFCAP_LRO, setifcap), 1569 DEF_CMD("-lro", -IFCAP_LRO, setifcap), 1570 DEF_CMD("wol", IFCAP_WOL, setifcap), 1571 DEF_CMD("-wol", -IFCAP_WOL, setifcap), 1572 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap), 1573 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap), 1574 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap), 1575 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap), 1576 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap), 1577 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap), 1578 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap), 1579 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap), 1580 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap), 1581 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap), 1582 DEF_CMD("normal", -IFF_LINK0, setifflags), 1583 DEF_CMD("compress", IFF_LINK0, setifflags), 1584 DEF_CMD("noicmp", IFF_LINK1, setifflags), 1585 DEF_CMD_ARG("mtu", setifmtu), 1586 DEF_CMD_ARG("name", setifname), 1587 }; 1588 1589 static __constructor void 1590 ifconfig_ctor(void) 1591 { 1592 size_t i; 1593 1594 for (i = 0; i < nitems(basic_cmds); i++) 1595 cmd_register(&basic_cmds[i]); 1596 } 1597