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