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 <stdbool.h> 75 #include <stdio.h> 76 #include <stdlib.h> 77 #include <string.h> 78 #include <unistd.h> 79 80 #include "ifconfig.h" 81 82 /* 83 * Since "struct ifreq" is composed of various union members, callers 84 * should pay special attention to interpret the value. 85 * (.e.g. little/big endian difference in the structure.) 86 */ 87 struct ifreq ifr; 88 89 char name[IFNAMSIZ]; 90 char *descr = NULL; 91 size_t descrlen = 64; 92 int setaddr; 93 int setmask; 94 int doalias; 95 int clearaddr; 96 int newaddr = 1; 97 int verbose; 98 int noload; 99 int printifname = 0; 100 101 int supmedia = 0; 102 int printkeys = 0; /* Print keying material for interfaces. */ 103 int exit_code = 0; 104 105 /* Formatter Strings */ 106 char *f_inet, *f_inet6, *f_ether, *f_addr; 107 108 static int ifconfig(int argc, char *const *argv, int iscreate, 109 const struct afswtch *afp); 110 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 111 struct ifaddrs *ifa); 112 static void tunnel_status(int s); 113 static _Noreturn void usage(void); 114 115 static int getifflags(const char *ifname, int us); 116 117 static struct afswtch *af_getbyname(const char *name); 118 static struct afswtch *af_getbyfamily(int af); 119 static void af_other_status(int); 120 121 void printifnamemaybe(void); 122 123 static struct option *opts = NULL; 124 125 struct ifa_order_elt { 126 int if_order; 127 int af_orders[255]; 128 struct ifaddrs *ifa; 129 TAILQ_ENTRY(ifa_order_elt) link; 130 }; 131 132 TAILQ_HEAD(ifa_queue, ifa_order_elt); 133 134 static struct module_map_entry { 135 const char *ifname; 136 const char *kldname; 137 } module_map[] = { 138 { 139 .ifname = "tun", 140 .kldname = "if_tuntap", 141 }, 142 { 143 .ifname = "tap", 144 .kldname = "if_tuntap", 145 }, 146 { 147 .ifname = "vmnet", 148 .kldname = "if_tuntap", 149 }, 150 { 151 .ifname = "ipsec", 152 .kldname = "ipsec", 153 }, 154 { 155 /* 156 * This mapping exists because there is a conflicting enc module 157 * in CAM. ifconfig's guessing behavior will attempt to match 158 * the ifname to a module as well as if_${ifname} and clash with 159 * CAM enc. This is an assertion of the correct module to load. 160 */ 161 .ifname = "enc", 162 .kldname = "if_enc", 163 }, 164 }; 165 166 167 void 168 opt_register(struct option *p) 169 { 170 p->next = opts; 171 opts = p; 172 } 173 174 static void 175 usage(void) 176 { 177 char options[1024]; 178 struct option *p; 179 180 /* XXX not right but close enough for now */ 181 options[0] = '\0'; 182 for (p = opts; p != NULL; p = p->next) { 183 strlcat(options, p->opt_usage, sizeof(options)); 184 strlcat(options, " ", sizeof(options)); 185 } 186 187 fprintf(stderr, 188 "usage: ifconfig [-f type:format] %sinterface address_family\n" 189 " [address [dest_address]] [parameters]\n" 190 " ifconfig interface create\n" 191 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n" 192 " ifconfig -l [-d] [-u] [address_family]\n" 193 " ifconfig %s[-d] [-m] [-u] [-v]\n", 194 options, options, options); 195 exit(1); 196 } 197 198 #define ORDERS_SIZE(x) sizeof(x) / sizeof(x[0]) 199 200 static int 201 calcorders(struct ifaddrs *ifa, struct ifa_queue *q) 202 { 203 struct ifaddrs *prev; 204 struct ifa_order_elt *cur; 205 unsigned int ord, af, ifa_ord; 206 207 prev = NULL; 208 cur = NULL; 209 ord = 0; 210 ifa_ord = 0; 211 212 while (ifa != NULL) { 213 if (prev == NULL || 214 strcmp(ifa->ifa_name, prev->ifa_name) != 0) { 215 cur = calloc(1, sizeof(*cur)); 216 217 if (cur == NULL) 218 return (-1); 219 220 TAILQ_INSERT_TAIL(q, cur, link); 221 cur->if_order = ifa_ord ++; 222 cur->ifa = ifa; 223 ord = 0; 224 } 225 226 if (ifa->ifa_addr) { 227 af = ifa->ifa_addr->sa_family; 228 229 if (af < ORDERS_SIZE(cur->af_orders) && 230 cur->af_orders[af] == 0) 231 cur->af_orders[af] = ++ord; 232 } 233 prev = ifa; 234 ifa = ifa->ifa_next; 235 } 236 237 return (0); 238 } 239 240 static int 241 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q) 242 { 243 struct ifa_order_elt *cur, *e1, *e2; 244 unsigned int af1, af2; 245 int ret; 246 247 e1 = e2 = NULL; 248 249 ret = strcmp(a->ifa_name, b->ifa_name); 250 if (ret != 0) { 251 TAILQ_FOREACH(cur, q, link) { 252 if (e1 && e2) 253 break; 254 255 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) 256 e1 = cur; 257 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0) 258 e2 = cur; 259 } 260 261 if (!e1 || !e2) 262 return (0); 263 else 264 return (e1->if_order - e2->if_order); 265 266 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) { 267 TAILQ_FOREACH(cur, q, link) { 268 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) { 269 e1 = cur; 270 break; 271 } 272 } 273 274 if (!e1) 275 return (0); 276 277 af1 = a->ifa_addr->sa_family; 278 af2 = b->ifa_addr->sa_family; 279 280 if (af1 < ORDERS_SIZE(e1->af_orders) && 281 af2 < ORDERS_SIZE(e1->af_orders)) 282 return (e1->af_orders[af1] - e1->af_orders[af2]); 283 } 284 285 return (0); 286 } 287 288 static void freeformat(void) 289 { 290 291 if (f_inet != NULL) 292 free(f_inet); 293 if (f_inet6 != NULL) 294 free(f_inet6); 295 if (f_ether != NULL) 296 free(f_ether); 297 if (f_addr != NULL) 298 free(f_addr); 299 } 300 301 static void setformat(char *input) 302 { 303 char *formatstr, *category, *modifier; 304 305 formatstr = strdup(input); 306 while ((category = strsep(&formatstr, ",")) != NULL) { 307 modifier = strchr(category, ':'); 308 if (modifier == NULL || modifier[1] == '\0') { 309 warnx("Skipping invalid format specification: %s\n", 310 category); 311 continue; 312 } 313 314 /* Split the string on the separator, then seek past it */ 315 modifier[0] = '\0'; 316 modifier++; 317 318 if (strcmp(category, "addr") == 0) 319 f_addr = strdup(modifier); 320 else if (strcmp(category, "ether") == 0) 321 f_ether = strdup(modifier); 322 else if (strcmp(category, "inet") == 0) 323 f_inet = strdup(modifier); 324 else if (strcmp(category, "inet6") == 0) 325 f_inet6 = strdup(modifier); 326 } 327 free(formatstr); 328 } 329 330 #undef ORDERS_SIZE 331 332 static struct ifaddrs * 333 sortifaddrs(struct ifaddrs *list, 334 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *), 335 struct ifa_queue *q) 336 { 337 struct ifaddrs *right, *temp, *last, *result, *next, *tail; 338 339 right = list; 340 temp = list; 341 last = list; 342 result = NULL; 343 next = NULL; 344 tail = NULL; 345 346 if (!list || !list->ifa_next) 347 return (list); 348 349 while (temp && temp->ifa_next) { 350 last = right; 351 right = right->ifa_next; 352 temp = temp->ifa_next->ifa_next; 353 } 354 355 last->ifa_next = NULL; 356 357 list = sortifaddrs(list, compare, q); 358 right = sortifaddrs(right, compare, q); 359 360 while (list || right) { 361 362 if (!right) { 363 next = list; 364 list = list->ifa_next; 365 } else if (!list) { 366 next = right; 367 right = right->ifa_next; 368 } else if (compare(list, right, q) <= 0) { 369 next = list; 370 list = list->ifa_next; 371 } else { 372 next = right; 373 right = right->ifa_next; 374 } 375 376 if (!result) 377 result = next; 378 else 379 tail->ifa_next = next; 380 381 tail = next; 382 } 383 384 return (result); 385 } 386 387 void printifnamemaybe() 388 { 389 if (printifname) 390 printf("%s\n", name); 391 } 392 393 int 394 main(int argc, char *argv[]) 395 { 396 int c, all, namesonly, downonly, uponly; 397 const struct afswtch *afp = NULL; 398 int ifindex; 399 struct ifaddrs *ifap, *sifap, *ifa; 400 struct ifreq paifr; 401 const struct sockaddr_dl *sdl; 402 char options[1024], *cp, *envformat, *namecp = NULL; 403 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q); 404 struct ifa_order_elt *cur, *tmp; 405 const char *ifname; 406 struct option *p; 407 size_t iflen; 408 int flags; 409 410 all = downonly = uponly = namesonly = noload = verbose = 0; 411 f_inet = f_inet6 = f_ether = f_addr = NULL; 412 413 envformat = getenv("IFCONFIG_FORMAT"); 414 if (envformat != NULL) 415 setformat(envformat); 416 417 /* 418 * Ensure we print interface name when expected to, 419 * even if we terminate early due to error. 420 */ 421 atexit(printifnamemaybe); 422 423 /* Parse leading line options */ 424 strlcpy(options, "f:adklmnuv", sizeof(options)); 425 for (p = opts; p != NULL; p = p->next) 426 strlcat(options, p->opt, sizeof(options)); 427 while ((c = getopt(argc, argv, options)) != -1) { 428 switch (c) { 429 case 'a': /* scan all interfaces */ 430 all++; 431 break; 432 case 'd': /* restrict scan to "down" interfaces */ 433 downonly++; 434 break; 435 case 'f': 436 if (optarg == NULL) 437 usage(); 438 setformat(optarg); 439 break; 440 case 'k': 441 printkeys++; 442 break; 443 case 'l': /* scan interface names only */ 444 namesonly++; 445 break; 446 case 'm': /* show media choices in status */ 447 supmedia = 1; 448 break; 449 case 'n': /* suppress module loading */ 450 noload++; 451 break; 452 case 'u': /* restrict scan to "up" interfaces */ 453 uponly++; 454 break; 455 case 'v': 456 verbose++; 457 break; 458 default: 459 for (p = opts; p != NULL; p = p->next) 460 if (p->opt[0] == c) { 461 p->cb(optarg); 462 break; 463 } 464 if (p == NULL) 465 usage(); 466 break; 467 } 468 } 469 argc -= optind; 470 argv += optind; 471 472 /* -l cannot be used with -a or -m */ 473 if (namesonly && (all || supmedia)) 474 usage(); 475 476 /* nonsense.. */ 477 if (uponly && downonly) 478 usage(); 479 480 /* no arguments is equivalent to '-a' */ 481 if (!namesonly && argc < 1) 482 all = 1; 483 484 /* -a and -l allow an address family arg to limit the output */ 485 if (all || namesonly) { 486 if (argc > 1) 487 usage(); 488 489 ifname = NULL; 490 ifindex = 0; 491 if (argc == 1) { 492 afp = af_getbyname(*argv); 493 if (afp == NULL) { 494 warnx("Address family '%s' unknown.", *argv); 495 usage(); 496 } 497 if (afp->af_name != NULL) 498 argc--, argv++; 499 /* leave with afp non-zero */ 500 } 501 } else { 502 /* not listing, need an argument */ 503 if (argc < 1) 504 usage(); 505 506 ifname = *argv; 507 argc--, argv++; 508 509 /* check and maybe load support for this interface */ 510 ifmaybeload(ifname); 511 512 ifindex = if_nametoindex(ifname); 513 if (ifindex == 0) { 514 /* 515 * NOTE: We must special-case the `create' command 516 * right here as we would otherwise fail when trying 517 * to find the interface. 518 */ 519 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 520 strcmp(argv[0], "plumb") == 0)) { 521 iflen = strlcpy(name, ifname, sizeof(name)); 522 if (iflen >= sizeof(name)) 523 errx(1, "%s: cloning name too long", 524 ifname); 525 ifconfig(argc, argv, 1, NULL); 526 exit(exit_code); 527 } 528 #ifdef JAIL 529 /* 530 * NOTE: We have to special-case the `-vnet' command 531 * right here as we would otherwise fail when trying 532 * to find the interface as it lives in another vnet. 533 */ 534 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) { 535 iflen = strlcpy(name, ifname, sizeof(name)); 536 if (iflen >= sizeof(name)) 537 errx(1, "%s: interface name too long", 538 ifname); 539 ifconfig(argc, argv, 0, NULL); 540 exit(exit_code); 541 } 542 #endif 543 errx(1, "interface %s does not exist", ifname); 544 } else { 545 /* 546 * Do not allow use `create` command as hostname if 547 * address family is not specified. 548 */ 549 if (argc > 0 && (strcmp(argv[0], "create") == 0 || 550 strcmp(argv[0], "plumb") == 0)) { 551 if (argc == 1) 552 errx(1, "interface %s already exists", 553 ifname); 554 argc--, argv++; 555 } 556 } 557 } 558 559 /* Check for address family */ 560 if (argc > 0) { 561 afp = af_getbyname(*argv); 562 if (afp != NULL) 563 argc--, argv++; 564 } 565 566 /* 567 * Check for a requested configuration action on a single interface, 568 * which doesn't require building, sorting, and searching the entire 569 * system address list 570 */ 571 if ((argc > 0) && (ifname != NULL)) { 572 iflen = strlcpy(name, ifname, sizeof(name)); 573 if (iflen >= sizeof(name)) { 574 warnx("%s: interface name too long, skipping", ifname); 575 } else { 576 flags = getifflags(name, -1); 577 if (!(((flags & IFF_CANTCONFIG) != 0) || 578 (downonly && (flags & IFF_UP) != 0) || 579 (uponly && (flags & IFF_UP) == 0))) 580 ifconfig(argc, argv, 0, afp); 581 } 582 goto done; 583 } 584 585 if (getifaddrs(&ifap) != 0) 586 err(EXIT_FAILURE, "getifaddrs"); 587 588 cp = NULL; 589 590 if (calcorders(ifap, &q) != 0) 591 err(EXIT_FAILURE, "calcorders"); 592 593 sifap = sortifaddrs(ifap, cmpifaddrs, &q); 594 595 TAILQ_FOREACH_SAFE(cur, &q, link, tmp) 596 free(cur); 597 598 ifindex = 0; 599 for (ifa = sifap; ifa; ifa = ifa->ifa_next) { 600 memset(&paifr, 0, sizeof(paifr)); 601 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name)); 602 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) { 603 memcpy(&paifr.ifr_addr, ifa->ifa_addr, 604 ifa->ifa_addr->sa_len); 605 } 606 607 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0) 608 continue; 609 if (ifa->ifa_addr->sa_family == AF_LINK) 610 sdl = (const struct sockaddr_dl *) ifa->ifa_addr; 611 else 612 sdl = NULL; 613 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly) 614 continue; 615 iflen = strlcpy(name, ifa->ifa_name, sizeof(name)); 616 if (iflen >= sizeof(name)) { 617 warnx("%s: interface name too long, skipping", 618 ifa->ifa_name); 619 continue; 620 } 621 cp = ifa->ifa_name; 622 623 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0) 624 continue; 625 if (downonly && (ifa->ifa_flags & IFF_UP) != 0) 626 continue; 627 if (uponly && (ifa->ifa_flags & IFF_UP) == 0) 628 continue; 629 /* 630 * Are we just listing the interfaces? 631 */ 632 if (namesonly) { 633 if (namecp == cp) 634 continue; 635 if (afp != NULL) { 636 /* special case for "ether" address family */ 637 if (!strcmp(afp->af_name, "ether")) { 638 if (sdl == NULL || 639 (sdl->sdl_type != IFT_ETHER && 640 sdl->sdl_type != IFT_L2VLAN && 641 sdl->sdl_type != IFT_BRIDGE) || 642 sdl->sdl_alen != ETHER_ADDR_LEN) 643 continue; 644 } else { 645 if (ifa->ifa_addr->sa_family 646 != afp->af_af) 647 continue; 648 } 649 } 650 namecp = cp; 651 ifindex++; 652 if (ifindex > 1) 653 printf(" "); 654 fputs(name, stdout); 655 continue; 656 } 657 ifindex++; 658 659 if (argc > 0) 660 ifconfig(argc, argv, 0, afp); 661 else 662 status(afp, sdl, ifa); 663 } 664 if (namesonly) 665 printf("\n"); 666 freeifaddrs(ifap); 667 668 done: 669 freeformat(); 670 exit(exit_code); 671 } 672 673 static struct afswtch *afs = NULL; 674 675 void 676 af_register(struct afswtch *p) 677 { 678 p->af_next = afs; 679 afs = p; 680 } 681 682 static struct afswtch * 683 af_getbyname(const char *name) 684 { 685 struct afswtch *afp; 686 687 for (afp = afs; afp != NULL; afp = afp->af_next) 688 if (strcmp(afp->af_name, name) == 0) 689 return afp; 690 return NULL; 691 } 692 693 static struct afswtch * 694 af_getbyfamily(int af) 695 { 696 struct afswtch *afp; 697 698 for (afp = afs; afp != NULL; afp = afp->af_next) 699 if (afp->af_af == af) 700 return afp; 701 return NULL; 702 } 703 704 static void 705 af_other_status(int s) 706 { 707 struct afswtch *afp; 708 uint8_t afmask[howmany(AF_MAX, NBBY)]; 709 710 memset(afmask, 0, sizeof(afmask)); 711 for (afp = afs; afp != NULL; afp = afp->af_next) { 712 if (afp->af_other_status == NULL) 713 continue; 714 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 715 continue; 716 afp->af_other_status(s); 717 setbit(afmask, afp->af_af); 718 } 719 } 720 721 static void 722 af_all_tunnel_status(int s) 723 { 724 struct afswtch *afp; 725 uint8_t afmask[howmany(AF_MAX, NBBY)]; 726 727 memset(afmask, 0, sizeof(afmask)); 728 for (afp = afs; afp != NULL; afp = afp->af_next) { 729 if (afp->af_status_tunnel == NULL) 730 continue; 731 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af)) 732 continue; 733 afp->af_status_tunnel(s); 734 setbit(afmask, afp->af_af); 735 } 736 } 737 738 static struct cmd *cmds = NULL; 739 740 void 741 cmd_register(struct cmd *p) 742 { 743 p->c_next = cmds; 744 cmds = p; 745 } 746 747 static const struct cmd * 748 cmd_lookup(const char *name, int iscreate) 749 { 750 const struct cmd *p; 751 752 for (p = cmds; p != NULL; p = p->c_next) 753 if (strcmp(name, p->c_name) == 0) { 754 if (iscreate) { 755 if (p->c_iscloneop) 756 return p; 757 } else { 758 if (!p->c_iscloneop) 759 return p; 760 } 761 } 762 return NULL; 763 } 764 765 struct callback { 766 callback_func *cb_func; 767 void *cb_arg; 768 struct callback *cb_next; 769 }; 770 static struct callback *callbacks = NULL; 771 772 void 773 callback_register(callback_func *func, void *arg) 774 { 775 struct callback *cb; 776 777 cb = malloc(sizeof(struct callback)); 778 if (cb == NULL) 779 errx(1, "unable to allocate memory for callback"); 780 cb->cb_func = func; 781 cb->cb_arg = arg; 782 cb->cb_next = callbacks; 783 callbacks = cb; 784 } 785 786 /* specially-handled commands */ 787 static void setifaddr(const char *, int, int, const struct afswtch *); 788 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr); 789 790 static void setifdstaddr(const char *, int, int, const struct afswtch *); 791 static const struct cmd setifdstaddr_cmd = 792 DEF_CMD("ifdstaddr", 0, setifdstaddr); 793 794 static int 795 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp) 796 { 797 const struct afswtch *afp, *nafp; 798 const struct cmd *p; 799 struct callback *cb; 800 int s; 801 802 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name); 803 afp = NULL; 804 if (uafp != NULL) 805 afp = uafp; 806 /* 807 * This is the historical "accident" allowing users to configure IPv4 808 * addresses without the "inet" keyword which while a nice feature has 809 * proven to complicate other things. We cannot remove this but only 810 * make sure we will never have a similar implicit default for IPv6 or 811 * any other address familiy. We need a fallback though for 812 * ifconfig IF up/down etc. to work without INET support as people 813 * never used ifconfig IF link up/down, etc. either. 814 */ 815 #ifndef RESCUE 816 #ifdef INET 817 if (afp == NULL && feature_present("inet")) 818 afp = af_getbyname("inet"); 819 #endif 820 #endif 821 if (afp == NULL) 822 afp = af_getbyname("link"); 823 if (afp == NULL) { 824 warnx("Please specify an address_family."); 825 usage(); 826 } 827 top: 828 ifr.ifr_addr.sa_family = 829 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ? 830 AF_LOCAL : afp->af_af; 831 832 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 && 833 (uafp != NULL || errno != EAFNOSUPPORT || 834 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)) 835 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 836 837 while (argc > 0) { 838 p = cmd_lookup(*argv, iscreate); 839 if (iscreate && p == NULL) { 840 /* 841 * Push the clone create callback so the new 842 * device is created and can be used for any 843 * remaining arguments. 844 */ 845 cb = callbacks; 846 if (cb == NULL) 847 errx(1, "internal error, no callback"); 848 callbacks = cb->cb_next; 849 cb->cb_func(s, cb->cb_arg); 850 iscreate = 0; 851 /* 852 * Handle any address family spec that 853 * immediately follows and potentially 854 * recreate the socket. 855 */ 856 nafp = af_getbyname(*argv); 857 if (nafp != NULL) { 858 argc--, argv++; 859 if (nafp != afp) { 860 close(s); 861 afp = nafp; 862 goto top; 863 } 864 } 865 /* 866 * Look for a normal parameter. 867 */ 868 continue; 869 } 870 if (p == NULL) { 871 /* 872 * Not a recognized command, choose between setting 873 * the interface address and the dst address. 874 */ 875 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd); 876 } 877 if (p->c_parameter == NEXTARG && p->c_u.c_func) { 878 if (argv[1] == NULL) 879 errx(1, "'%s' requires argument", 880 p->c_name); 881 p->c_u.c_func(argv[1], 0, s, afp); 882 argc--, argv++; 883 } else if (p->c_parameter == OPTARG && p->c_u.c_func) { 884 p->c_u.c_func(argv[1], 0, s, afp); 885 if (argv[1] != NULL) 886 argc--, argv++; 887 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) { 888 if (argc < 3) 889 errx(1, "'%s' requires 2 arguments", 890 p->c_name); 891 p->c_u.c_func2(argv[1], argv[2], s, afp); 892 argc -= 2, argv += 2; 893 } else if (p->c_u.c_func) 894 p->c_u.c_func(*argv, p->c_parameter, s, afp); 895 argc--, argv++; 896 } 897 898 /* 899 * Do any post argument processing required by the address family. 900 */ 901 if (afp->af_postproc != NULL) 902 afp->af_postproc(s, afp); 903 /* 904 * Do deferred callbacks registered while processing 905 * command-line arguments. 906 */ 907 for (cb = callbacks; cb != NULL; cb = cb->cb_next) 908 cb->cb_func(s, cb->cb_arg); 909 /* 910 * Do deferred operations. 911 */ 912 if (clearaddr) { 913 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) { 914 warnx("interface %s cannot change %s addresses!", 915 name, afp->af_name); 916 clearaddr = 0; 917 } 918 } 919 if (clearaddr) { 920 int ret; 921 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name, 922 sizeof ifr.ifr_name); 923 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq); 924 if (ret < 0) { 925 if (errno == EADDRNOTAVAIL && (doalias >= 0)) { 926 /* means no previous address for interface */ 927 } else 928 Perror("ioctl (SIOCDIFADDR)"); 929 } 930 } 931 if (newaddr) { 932 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) { 933 warnx("interface %s cannot change %s addresses!", 934 name, afp->af_name); 935 newaddr = 0; 936 } 937 } 938 if (newaddr && (setaddr || setmask)) { 939 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name, 940 sizeof ifr.ifr_name); 941 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0) 942 Perror("ioctl (SIOCAIFADDR)"); 943 } 944 945 close(s); 946 return(0); 947 } 948 949 /*ARGSUSED*/ 950 static void 951 setifaddr(const char *addr, int param, int s, const struct afswtch *afp) 952 { 953 if (afp->af_getaddr == NULL) 954 return; 955 /* 956 * Delay the ioctl to set the interface addr until flags are all set. 957 * The address interpretation may depend on the flags, 958 * and the flags may change when the address is set. 959 */ 960 setaddr++; 961 if (doalias == 0 && afp->af_af != AF_LINK) 962 clearaddr = 1; 963 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR)); 964 } 965 966 static void 967 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp) 968 { 969 struct addrinfo *srcres, *dstres; 970 int ecode; 971 972 if (afp->af_settunnel == NULL) { 973 warn("address family %s does not support tunnel setup", 974 afp->af_name); 975 return; 976 } 977 978 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0) 979 errx(1, "error in parsing address string: %s", 980 gai_strerror(ecode)); 981 982 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0) 983 errx(1, "error in parsing address string: %s", 984 gai_strerror(ecode)); 985 986 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family) 987 errx(1, 988 "source and destination address families do not match"); 989 990 afp->af_settunnel(s, srcres, dstres); 991 992 freeaddrinfo(srcres); 993 freeaddrinfo(dstres); 994 } 995 996 /* ARGSUSED */ 997 static void 998 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp) 999 { 1000 1001 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0) 1002 err(1, "SIOCDIFPHYADDR"); 1003 } 1004 1005 #ifdef JAIL 1006 static void 1007 setifvnet(const char *jname, int dummy __unused, int s, 1008 const struct afswtch *afp) 1009 { 1010 struct ifreq my_ifr; 1011 1012 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1013 my_ifr.ifr_jid = jail_getid(jname); 1014 if (my_ifr.ifr_jid < 0) 1015 errx(1, "%s", jail_errmsg); 1016 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0) 1017 err(1, "SIOCSIFVNET"); 1018 } 1019 1020 static void 1021 setifrvnet(const char *jname, int dummy __unused, int s, 1022 const struct afswtch *afp) 1023 { 1024 struct ifreq my_ifr; 1025 1026 memcpy(&my_ifr, &ifr, sizeof(my_ifr)); 1027 my_ifr.ifr_jid = jail_getid(jname); 1028 if (my_ifr.ifr_jid < 0) 1029 errx(1, "%s", jail_errmsg); 1030 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0) 1031 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name); 1032 } 1033 #endif 1034 1035 static void 1036 setifnetmask(const char *addr, int dummy __unused, int s, 1037 const struct afswtch *afp) 1038 { 1039 if (afp->af_getaddr != NULL) { 1040 setmask++; 1041 afp->af_getaddr(addr, MASK); 1042 } 1043 } 1044 1045 static void 1046 setifbroadaddr(const char *addr, int dummy __unused, int s, 1047 const struct afswtch *afp) 1048 { 1049 if (afp->af_getaddr != NULL) 1050 afp->af_getaddr(addr, DSTADDR); 1051 } 1052 1053 static void 1054 notealias(const char *addr, int param, int s, const struct afswtch *afp) 1055 { 1056 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr)) 1057 if (setaddr && doalias == 0 && param < 0) 1058 if (afp->af_addreq != NULL && afp->af_ridreq != NULL) 1059 bcopy((caddr_t)rqtosa(af_addreq), 1060 (caddr_t)rqtosa(af_ridreq), 1061 rqtosa(af_addreq)->sa_len); 1062 doalias = param; 1063 if (param < 0) { 1064 clearaddr = 1; 1065 newaddr = 0; 1066 } else 1067 clearaddr = 0; 1068 #undef rqtosa 1069 } 1070 1071 /*ARGSUSED*/ 1072 static void 1073 setifdstaddr(const char *addr, int param __unused, int s, 1074 const struct afswtch *afp) 1075 { 1076 if (afp->af_getaddr != NULL) 1077 afp->af_getaddr(addr, DSTADDR); 1078 } 1079 1080 static int 1081 getifflags(const char *ifname, int us) 1082 { 1083 struct ifreq my_ifr; 1084 int s; 1085 1086 memset(&my_ifr, 0, sizeof(my_ifr)); 1087 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name)); 1088 if (us < 0) { 1089 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) 1090 err(1, "socket(family AF_LOCAL,SOCK_DGRAM"); 1091 } else 1092 s = us; 1093 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) { 1094 Perror("ioctl (SIOCGIFFLAGS)"); 1095 exit(1); 1096 } 1097 if (us < 0) 1098 close(s); 1099 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16)); 1100 } 1101 1102 /* 1103 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion 1104 * of the ifreq structure, which may confuse other parts of ifconfig. 1105 * Make a private copy so we can avoid that. 1106 */ 1107 static void 1108 setifflags(const char *vname, int value, int s, const struct afswtch *afp) 1109 { 1110 struct ifreq my_ifr; 1111 int flags; 1112 1113 flags = getifflags(name, s); 1114 if (value < 0) { 1115 value = -value; 1116 flags &= ~value; 1117 } else 1118 flags |= value; 1119 memset(&my_ifr, 0, sizeof(my_ifr)); 1120 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name)); 1121 my_ifr.ifr_flags = flags & 0xffff; 1122 my_ifr.ifr_flagshigh = flags >> 16; 1123 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0) 1124 Perror(vname); 1125 } 1126 1127 void 1128 setifcap(const char *vname, int value, int s, const struct afswtch *afp) 1129 { 1130 int flags; 1131 1132 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) { 1133 Perror("ioctl (SIOCGIFCAP)"); 1134 exit(1); 1135 } 1136 flags = ifr.ifr_curcap; 1137 if (value < 0) { 1138 value = -value; 1139 flags &= ~value; 1140 } else 1141 flags |= value; 1142 flags &= ifr.ifr_reqcap; 1143 ifr.ifr_reqcap = flags; 1144 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0) 1145 Perror(vname); 1146 } 1147 1148 static void 1149 setifmetric(const char *val, int dummy __unused, int s, 1150 const struct afswtch *afp) 1151 { 1152 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1153 ifr.ifr_metric = atoi(val); 1154 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) 1155 err(1, "ioctl SIOCSIFMETRIC (set metric)"); 1156 } 1157 1158 static void 1159 setifmtu(const char *val, int dummy __unused, int s, 1160 const struct afswtch *afp) 1161 { 1162 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); 1163 ifr.ifr_mtu = atoi(val); 1164 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0) 1165 err(1, "ioctl SIOCSIFMTU (set mtu)"); 1166 } 1167 1168 static void 1169 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp) 1170 { 1171 u_long ul; 1172 char *endp; 1173 1174 ul = strtoul(val, &endp, 0); 1175 if (*endp != '\0') 1176 errx(1, "invalid value for pcp"); 1177 if (ul > 7) 1178 errx(1, "value for pcp out of range"); 1179 ifr.ifr_lan_pcp = ul; 1180 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1181 err(1, "SIOCSLANPCP"); 1182 } 1183 1184 static void 1185 disableifpcp(const char *val, int arg __unused, int s, 1186 const struct afswtch *afp) 1187 { 1188 1189 ifr.ifr_lan_pcp = IFNET_PCP_NONE; 1190 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1) 1191 err(1, "SIOCSLANPCP"); 1192 } 1193 1194 static void 1195 setifname(const char *val, int dummy __unused, int s, 1196 const struct afswtch *afp) 1197 { 1198 char *newname; 1199 1200 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1201 1202 newname = strdup(val); 1203 if (newname == NULL) 1204 err(1, "no memory to set ifname"); 1205 ifr.ifr_data = newname; 1206 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) { 1207 free(newname); 1208 err(1, "ioctl SIOCSIFNAME (set name)"); 1209 } 1210 printifname = 1; 1211 strlcpy(name, newname, sizeof(name)); 1212 free(newname); 1213 } 1214 1215 /* ARGSUSED */ 1216 static void 1217 setifdescr(const char *val, int dummy __unused, int s, 1218 const struct afswtch *afp) 1219 { 1220 char *newdescr; 1221 1222 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1223 1224 ifr.ifr_buffer.length = strlen(val) + 1; 1225 if (ifr.ifr_buffer.length == 1) { 1226 ifr.ifr_buffer.buffer = newdescr = NULL; 1227 ifr.ifr_buffer.length = 0; 1228 } else { 1229 newdescr = strdup(val); 1230 ifr.ifr_buffer.buffer = newdescr; 1231 if (newdescr == NULL) { 1232 warn("no memory to set ifdescr"); 1233 return; 1234 } 1235 } 1236 1237 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0) 1238 err(1, "ioctl SIOCSIFDESCR (set descr)"); 1239 1240 free(newdescr); 1241 } 1242 1243 /* ARGSUSED */ 1244 static void 1245 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp) 1246 { 1247 1248 setifdescr("", 0, s, 0); 1249 } 1250 1251 #define IFFBITS \ 1252 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \ 1253 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \ 1254 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP" 1255 1256 #define IFCAPBITS \ 1257 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \ 1258 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \ 1259 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \ 1260 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP\33NOMAP\34TXTLS4\35TXTLS6" 1261 1262 /* 1263 * Print the status of the interface. If an address family was 1264 * specified, show only it; otherwise, show them all. 1265 */ 1266 static void 1267 status(const struct afswtch *afp, const struct sockaddr_dl *sdl, 1268 struct ifaddrs *ifa) 1269 { 1270 struct ifaddrs *ift; 1271 int allfamilies, s; 1272 struct ifstat ifs; 1273 1274 if (afp == NULL) { 1275 allfamilies = 1; 1276 ifr.ifr_addr.sa_family = AF_LOCAL; 1277 } else { 1278 allfamilies = 0; 1279 ifr.ifr_addr.sa_family = 1280 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af; 1281 } 1282 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); 1283 1284 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0); 1285 if (s < 0) 1286 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family); 1287 1288 printf("%s: ", name); 1289 printb("flags", ifa->ifa_flags, IFFBITS); 1290 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1) 1291 printf(" metric %d", ifr.ifr_metric); 1292 if (ioctl(s, SIOCGIFMTU, &ifr) != -1) 1293 printf(" mtu %d", ifr.ifr_mtu); 1294 putchar('\n'); 1295 1296 for (;;) { 1297 if ((descr = reallocf(descr, descrlen)) != NULL) { 1298 ifr.ifr_buffer.buffer = descr; 1299 ifr.ifr_buffer.length = descrlen; 1300 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) { 1301 if (ifr.ifr_buffer.buffer == descr) { 1302 if (strlen(descr) > 0) 1303 printf("\tdescription: %s\n", 1304 descr); 1305 } else if (ifr.ifr_buffer.length > descrlen) { 1306 descrlen = ifr.ifr_buffer.length; 1307 continue; 1308 } 1309 } 1310 } else 1311 warn("unable to allocate memory for interface" 1312 "description"); 1313 break; 1314 } 1315 1316 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) { 1317 if (ifr.ifr_curcap != 0) { 1318 printb("\toptions", ifr.ifr_curcap, IFCAPBITS); 1319 putchar('\n'); 1320 } 1321 if (supmedia && ifr.ifr_reqcap != 0) { 1322 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS); 1323 putchar('\n'); 1324 } 1325 } 1326 1327 tunnel_status(s); 1328 1329 for (ift = ifa; ift != NULL; ift = ift->ifa_next) { 1330 if (ift->ifa_addr == NULL) 1331 continue; 1332 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0) 1333 continue; 1334 if (allfamilies) { 1335 const struct afswtch *p; 1336 p = af_getbyfamily(ift->ifa_addr->sa_family); 1337 if (p != NULL && p->af_status != NULL) 1338 p->af_status(s, ift); 1339 } else if (afp->af_af == ift->ifa_addr->sa_family) 1340 afp->af_status(s, ift); 1341 } 1342 #if 0 1343 if (allfamilies || afp->af_af == AF_LINK) { 1344 const struct afswtch *lafp; 1345 1346 /* 1347 * Hack; the link level address is received separately 1348 * from the routing information so any address is not 1349 * handled above. Cobble together an entry and invoke 1350 * the status method specially. 1351 */ 1352 lafp = af_getbyname("lladdr"); 1353 if (lafp != NULL) { 1354 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl; 1355 lafp->af_status(s, &info); 1356 } 1357 } 1358 #endif 1359 if (allfamilies) 1360 af_other_status(s); 1361 else if (afp->af_other_status != NULL) 1362 afp->af_other_status(s); 1363 1364 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name); 1365 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0) 1366 printf("%s", ifs.ascii); 1367 1368 if (verbose > 0) 1369 sfp_status(s, &ifr, verbose); 1370 1371 close(s); 1372 return; 1373 } 1374 1375 static void 1376 tunnel_status(int s) 1377 { 1378 af_all_tunnel_status(s); 1379 } 1380 1381 void 1382 Perror(const char *cmd) 1383 { 1384 switch (errno) { 1385 1386 case ENXIO: 1387 errx(1, "%s: no such interface", cmd); 1388 break; 1389 1390 case EPERM: 1391 errx(1, "%s: permission denied", cmd); 1392 break; 1393 1394 default: 1395 err(1, "%s", cmd); 1396 } 1397 } 1398 1399 /* 1400 * Print a value a la the %b format of the kernel's printf 1401 */ 1402 void 1403 printb(const char *s, unsigned v, const char *bits) 1404 { 1405 int i, any = 0; 1406 char c; 1407 1408 if (bits && *bits == 8) 1409 printf("%s=%o", s, v); 1410 else 1411 printf("%s=%x", s, v); 1412 if (bits) { 1413 bits++; 1414 putchar('<'); 1415 while ((i = *bits++) != '\0') { 1416 if (v & (1 << (i-1))) { 1417 if (any) 1418 putchar(','); 1419 any = 1; 1420 for (; (c = *bits) > 32; bits++) 1421 putchar(c); 1422 } else 1423 for (; *bits > 32; bits++) 1424 ; 1425 } 1426 putchar('>'); 1427 } 1428 } 1429 1430 void 1431 print_vhid(const struct ifaddrs *ifa, const char *s) 1432 { 1433 struct if_data *ifd; 1434 1435 if (ifa->ifa_data == NULL) 1436 return; 1437 1438 ifd = ifa->ifa_data; 1439 if (ifd->ifi_vhid == 0) 1440 return; 1441 1442 printf(" vhid %d", ifd->ifi_vhid); 1443 } 1444 1445 void 1446 ifmaybeload(const char *name) 1447 { 1448 #define MOD_PREFIX_LEN 3 /* "if_" */ 1449 struct module_stat mstat; 1450 int i, fileid, modid; 1451 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp; 1452 const char *cp; 1453 struct module_map_entry *mme; 1454 bool found; 1455 1456 /* loading suppressed by the user */ 1457 if (noload) 1458 return; 1459 1460 /* trim the interface number off the end */ 1461 strlcpy(ifname, name, sizeof(ifname)); 1462 for (dp = ifname; *dp != 0; dp++) 1463 if (isdigit(*dp)) { 1464 *dp = 0; 1465 break; 1466 } 1467 1468 /* Either derive it from the map or guess otherwise */ 1469 *ifkind = '\0'; 1470 found = false; 1471 for (i = 0; i < nitems(module_map); ++i) { 1472 mme = &module_map[i]; 1473 if (strcmp(mme->ifname, ifname) == 0) { 1474 strlcpy(ifkind, mme->kldname, sizeof(ifkind)); 1475 found = true; 1476 break; 1477 } 1478 } 1479 1480 /* We didn't have an alias for it... we'll guess. */ 1481 if (!found) { 1482 /* turn interface and unit into module name */ 1483 strlcpy(ifkind, "if_", sizeof(ifkind)); 1484 strlcat(ifkind, ifname, sizeof(ifkind)); 1485 } 1486 1487 /* scan files in kernel */ 1488 mstat.version = sizeof(struct module_stat); 1489 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) { 1490 /* scan modules in file */ 1491 for (modid = kldfirstmod(fileid); modid > 0; 1492 modid = modfnext(modid)) { 1493 if (modstat(modid, &mstat) < 0) 1494 continue; 1495 /* strip bus name if present */ 1496 if ((cp = strchr(mstat.name, '/')) != NULL) { 1497 cp++; 1498 } else { 1499 cp = mstat.name; 1500 } 1501 /* 1502 * Is it already loaded? Don't compare with ifname if 1503 * we were specifically told which kld to use. Doing 1504 * so could lead to conflicts not trivially solved. 1505 */ 1506 if ((!found && strcmp(ifname, cp) == 0) || 1507 strcmp(ifkind, cp) == 0) 1508 return; 1509 } 1510 } 1511 1512 /* 1513 * Try to load the module. But ignore failures, because ifconfig can't 1514 * infer the names of all drivers (eg mlx4en(4)). 1515 */ 1516 (void) kldload(ifkind); 1517 } 1518 1519 static struct cmd basic_cmds[] = { 1520 DEF_CMD("up", IFF_UP, setifflags), 1521 DEF_CMD("down", -IFF_UP, setifflags), 1522 DEF_CMD("arp", -IFF_NOARP, setifflags), 1523 DEF_CMD("-arp", IFF_NOARP, setifflags), 1524 DEF_CMD("debug", IFF_DEBUG, setifflags), 1525 DEF_CMD("-debug", -IFF_DEBUG, setifflags), 1526 DEF_CMD_ARG("description", setifdescr), 1527 DEF_CMD_ARG("descr", setifdescr), 1528 DEF_CMD("-description", 0, unsetifdescr), 1529 DEF_CMD("-descr", 0, unsetifdescr), 1530 DEF_CMD("promisc", IFF_PPROMISC, setifflags), 1531 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags), 1532 DEF_CMD("add", IFF_UP, notealias), 1533 DEF_CMD("alias", IFF_UP, notealias), 1534 DEF_CMD("-alias", -IFF_UP, notealias), 1535 DEF_CMD("delete", -IFF_UP, notealias), 1536 DEF_CMD("remove", -IFF_UP, notealias), 1537 #ifdef notdef 1538 #define EN_SWABIPS 0x1000 1539 DEF_CMD("swabips", EN_SWABIPS, setifflags), 1540 DEF_CMD("-swabips", -EN_SWABIPS, setifflags), 1541 #endif 1542 DEF_CMD_ARG("netmask", setifnetmask), 1543 DEF_CMD_ARG("metric", setifmetric), 1544 DEF_CMD_ARG("broadcast", setifbroadaddr), 1545 DEF_CMD_ARG2("tunnel", settunnel), 1546 DEF_CMD("-tunnel", 0, deletetunnel), 1547 DEF_CMD("deletetunnel", 0, deletetunnel), 1548 #ifdef JAIL 1549 DEF_CMD_ARG("vnet", setifvnet), 1550 DEF_CMD_ARG("-vnet", setifrvnet), 1551 #endif 1552 DEF_CMD("link0", IFF_LINK0, setifflags), 1553 DEF_CMD("-link0", -IFF_LINK0, setifflags), 1554 DEF_CMD("link1", IFF_LINK1, setifflags), 1555 DEF_CMD("-link1", -IFF_LINK1, setifflags), 1556 DEF_CMD("link2", IFF_LINK2, setifflags), 1557 DEF_CMD("-link2", -IFF_LINK2, setifflags), 1558 DEF_CMD("monitor", IFF_MONITOR, setifflags), 1559 DEF_CMD("-monitor", -IFF_MONITOR, setifflags), 1560 DEF_CMD("nomap", IFCAP_NOMAP, setifcap), 1561 DEF_CMD("-nomap", -IFCAP_NOMAP, setifcap), 1562 DEF_CMD("staticarp", IFF_STATICARP, setifflags), 1563 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags), 1564 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap), 1565 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap), 1566 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap), 1567 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap), 1568 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap), 1569 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap), 1570 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap), 1571 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap), 1572 DEF_CMD("netcons", IFCAP_NETCONS, setifcap), 1573 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap), 1574 DEF_CMD_ARG("pcp", setifpcp), 1575 DEF_CMD("-pcp", 0, disableifpcp), 1576 DEF_CMD("polling", IFCAP_POLLING, setifcap), 1577 DEF_CMD("-polling", -IFCAP_POLLING, setifcap), 1578 DEF_CMD("tso6", IFCAP_TSO6, setifcap), 1579 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap), 1580 DEF_CMD("tso4", IFCAP_TSO4, setifcap), 1581 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap), 1582 DEF_CMD("tso", IFCAP_TSO, setifcap), 1583 DEF_CMD("-tso", -IFCAP_TSO, setifcap), 1584 DEF_CMD("toe", IFCAP_TOE, setifcap), 1585 DEF_CMD("-toe", -IFCAP_TOE, setifcap), 1586 DEF_CMD("lro", IFCAP_LRO, setifcap), 1587 DEF_CMD("-lro", -IFCAP_LRO, setifcap), 1588 DEF_CMD("txtls", IFCAP_TXTLS, setifcap), 1589 DEF_CMD("-txtls", -IFCAP_TXTLS, setifcap), 1590 DEF_CMD("wol", IFCAP_WOL, setifcap), 1591 DEF_CMD("-wol", -IFCAP_WOL, setifcap), 1592 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap), 1593 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap), 1594 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap), 1595 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap), 1596 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap), 1597 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap), 1598 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap), 1599 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap), 1600 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap), 1601 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap), 1602 DEF_CMD("normal", -IFF_LINK0, setifflags), 1603 DEF_CMD("compress", IFF_LINK0, setifflags), 1604 DEF_CMD("noicmp", IFF_LINK1, setifflags), 1605 DEF_CMD_ARG("mtu", setifmtu), 1606 DEF_CMD_ARG("name", setifname), 1607 }; 1608 1609 static __constructor void 1610 ifconfig_ctor(void) 1611 { 1612 size_t i; 1613 1614 for (i = 0; i < nitems(basic_cmds); i++) 1615 cmd_register(&basic_cmds[i]); 1616 } 1617