2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char copyright[] =
32 "@(#) Copyright (c) 1983, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94";
40 static const char rcsid[] =
44 #include <sys/param.h>
45 #include <sys/ioctl.h>
46 #include <sys/module.h>
47 #include <sys/linker.h>
48 #include <sys/queue.h>
49 #include <sys/socket.h>
52 #include <net/ethernet.h>
54 #include <net/if_dl.h>
55 #include <net/if_types.h>
56 #include <net/route.h>
59 #include <netinet/in.h>
60 #include <netinet/in_var.h>
61 #include <arpa/inet.h>
80 * Since "struct ifreq" is composed of various union members, callers
81 * should pay special attention to interpret the value.
82 * (.e.g. little/big endian difference in the structure.)
99 int printkeys = 0; /* Print keying material for interfaces. */
101 /* Formatter Strings */
102 char *f_inet, *f_inet6, *f_ether, *f_addr;
104 static int ifconfig(int argc, char *const *argv, int iscreate,
105 const struct afswtch *afp);
106 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
107 struct ifaddrs *ifa);
108 static void tunnel_status(int s);
109 static _Noreturn void usage(void);
111 static struct afswtch *af_getbyname(const char *name);
112 static struct afswtch *af_getbyfamily(int af);
113 static void af_other_status(int);
115 void printifnamemaybe(void);
117 static struct option *opts = NULL;
119 struct ifa_order_elt {
123 TAILQ_ENTRY(ifa_order_elt) link;
126 TAILQ_HEAD(ifa_queue, ifa_order_elt);
129 opt_register(struct option *p)
141 /* XXX not right but close enough for now */
143 for (p = opts; p != NULL; p = p->next) {
144 strlcat(options, p->opt_usage, sizeof(options));
145 strlcat(options, " ", sizeof(options));
149 "usage: ifconfig [-f type:format] %sinterface address_family\n"
150 " [address [dest_address]] [parameters]\n"
151 " ifconfig interface create\n"
152 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n"
153 " ifconfig -l [-d] [-u] [address_family]\n"
154 " ifconfig %s[-d] [-m] [-u] [-v]\n",
155 options, options, options);
159 #define ORDERS_SIZE(x) sizeof(x) / sizeof(x[0])
162 calcorders(struct ifaddrs *ifa, struct ifa_queue *q)
164 struct ifaddrs *prev;
165 struct ifa_order_elt *cur;
166 unsigned int ord, af, ifa_ord;
173 while (ifa != NULL) {
175 strcmp(ifa->ifa_name, prev->ifa_name) != 0) {
176 cur = calloc(1, sizeof(*cur));
181 TAILQ_INSERT_TAIL(q, cur, link);
182 cur->if_order = ifa_ord ++;
188 af = ifa->ifa_addr->sa_family;
190 if (af < ORDERS_SIZE(cur->af_orders) &&
191 cur->af_orders[af] == 0)
192 cur->af_orders[af] = ++ord;
202 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q)
204 struct ifa_order_elt *cur, *e1, *e2;
205 unsigned int af1, af2;
210 ret = strcmp(a->ifa_name, b->ifa_name);
212 TAILQ_FOREACH(cur, q, link) {
216 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0)
218 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0)
225 return (e1->if_order - e2->if_order);
227 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) {
228 TAILQ_FOREACH(cur, q, link) {
229 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) {
238 af1 = a->ifa_addr->sa_family;
239 af2 = b->ifa_addr->sa_family;
241 if (af1 < ORDERS_SIZE(e1->af_orders) &&
242 af2 < ORDERS_SIZE(e1->af_orders))
243 return (e1->af_orders[af1] - e1->af_orders[af2]);
249 static void freeformat(void)
262 static void setformat(char *input)
264 char *formatstr, *category, *modifier;
266 formatstr = strdup(input);
267 while ((category = strsep(&formatstr, ",")) != NULL) {
268 modifier = strchr(category, ':');
269 if (modifier == NULL || modifier[1] == '\0') {
270 warnx("Skipping invalid format specification: %s\n",
275 /* Split the string on the separator, then seek past it */
279 if (strcmp(category, "addr") == 0)
280 f_addr = strdup(modifier);
281 else if (strcmp(category, "ether") == 0)
282 f_ether = strdup(modifier);
283 else if (strcmp(category, "inet") == 0)
284 f_inet = strdup(modifier);
285 else if (strcmp(category, "inet6") == 0)
286 f_inet6 = strdup(modifier);
293 static struct ifaddrs *
294 sortifaddrs(struct ifaddrs *list,
295 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *),
298 struct ifaddrs *right, *temp, *last, *result, *next, *tail;
307 if (!list || !list->ifa_next)
310 while (temp && temp->ifa_next) {
312 right = right->ifa_next;
313 temp = temp->ifa_next->ifa_next;
316 last->ifa_next = NULL;
318 list = sortifaddrs(list, compare, q);
319 right = sortifaddrs(right, compare, q);
321 while (list || right) {
325 list = list->ifa_next;
328 right = right->ifa_next;
329 } else if (compare(list, right, q) <= 0) {
331 list = list->ifa_next;
334 right = right->ifa_next;
340 tail->ifa_next = next;
348 void printifnamemaybe()
351 printf("%s\n", name);
355 main(int argc, char *argv[])
357 int c, all, namesonly, downonly, uponly;
358 const struct afswtch *afp = NULL;
360 struct ifaddrs *ifap, *sifap, *ifa;
362 const struct sockaddr_dl *sdl;
363 char options[1024], *cp, *envformat, *namecp = NULL;
364 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q);
365 struct ifa_order_elt *cur, *tmp;
370 all = downonly = uponly = namesonly = noload = verbose = 0;
371 f_inet = f_inet6 = f_ether = f_addr = NULL;
373 envformat = getenv("IFCONFIG_FORMAT");
374 if (envformat != NULL)
375 setformat(envformat);
378 * Ensure we print interface name when expected to,
379 * even if we terminate early due to error.
381 atexit(printifnamemaybe);
383 /* Parse leading line options */
384 strlcpy(options, "f:adklmnuv", sizeof(options));
385 for (p = opts; p != NULL; p = p->next)
386 strlcat(options, p->opt, sizeof(options));
387 while ((c = getopt(argc, argv, options)) != -1) {
389 case 'a': /* scan all interfaces */
392 case 'd': /* restrict scan to "down" interfaces */
403 case 'l': /* scan interface names only */
406 case 'm': /* show media choices in status */
409 case 'n': /* suppress module loading */
412 case 'u': /* restrict scan to "up" interfaces */
419 for (p = opts; p != NULL; p = p->next)
420 if (p->opt[0] == c) {
432 /* -l cannot be used with -a or -m */
433 if (namesonly && (all || supmedia))
437 if (uponly && downonly)
440 /* no arguments is equivalent to '-a' */
441 if (!namesonly && argc < 1)
444 /* -a and -l allow an address family arg to limit the output */
445 if (all || namesonly) {
452 afp = af_getbyname(*argv);
454 warnx("Address family '%s' unknown.", *argv);
457 if (afp->af_name != NULL)
459 /* leave with afp non-zero */
462 /* not listing, need an argument */
469 /* check and maybe load support for this interface */
472 ifindex = if_nametoindex(ifname);
475 * NOTE: We must special-case the `create' command
476 * right here as we would otherwise fail when trying
477 * to find the interface.
479 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
480 strcmp(argv[0], "plumb") == 0)) {
481 iflen = strlcpy(name, ifname, sizeof(name));
482 if (iflen >= sizeof(name))
483 errx(1, "%s: cloning name too long",
485 ifconfig(argc, argv, 1, NULL);
490 * NOTE: We have to special-case the `-vnet' command
491 * right here as we would otherwise fail when trying
492 * to find the interface as it lives in another vnet.
494 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) {
495 iflen = strlcpy(name, ifname, sizeof(name));
496 if (iflen >= sizeof(name))
497 errx(1, "%s: interface name too long",
499 ifconfig(argc, argv, 0, NULL);
503 errx(1, "interface %s does not exist", ifname);
506 * Do not allow use `create` command as hostname if
507 * address family is not specified.
509 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
510 strcmp(argv[0], "plumb") == 0)) {
512 errx(1, "interface %s already exists",
519 /* Check for address family */
521 afp = af_getbyname(*argv);
526 if (getifaddrs(&ifap) != 0)
527 err(EXIT_FAILURE, "getifaddrs");
531 if (calcorders(ifap, &q) != 0)
532 err(EXIT_FAILURE, "calcorders");
534 sifap = sortifaddrs(ifap, cmpifaddrs, &q);
536 TAILQ_FOREACH_SAFE(cur, &q, link, tmp)
540 for (ifa = sifap; ifa; ifa = ifa->ifa_next) {
541 memset(&paifr, 0, sizeof(paifr));
542 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));
543 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
544 memcpy(&paifr.ifr_addr, ifa->ifa_addr,
545 ifa->ifa_addr->sa_len);
548 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
550 if (ifa->ifa_addr->sa_family == AF_LINK)
551 sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
554 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly)
556 iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
557 if (iflen >= sizeof(name)) {
558 warnx("%s: interface name too long, skipping",
564 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0)
566 if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
568 if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
571 * Are we just listing the interfaces?
577 /* special case for "ether" address family */
578 if (!strcmp(afp->af_name, "ether")) {
580 (sdl->sdl_type != IFT_ETHER &&
581 sdl->sdl_type != IFT_L2VLAN &&
582 sdl->sdl_type != IFT_BRIDGE) ||
583 sdl->sdl_alen != ETHER_ADDR_LEN)
586 if (ifa->ifa_addr->sa_family
601 ifconfig(argc, argv, 0, afp);
603 status(afp, sdl, ifa);
613 static struct afswtch *afs = NULL;
616 af_register(struct afswtch *p)
622 static struct afswtch *
623 af_getbyname(const char *name)
627 for (afp = afs; afp != NULL; afp = afp->af_next)
628 if (strcmp(afp->af_name, name) == 0)
633 static struct afswtch *
634 af_getbyfamily(int af)
638 for (afp = afs; afp != NULL; afp = afp->af_next)
639 if (afp->af_af == af)
645 af_other_status(int s)
648 uint8_t afmask[howmany(AF_MAX, NBBY)];
650 memset(afmask, 0, sizeof(afmask));
651 for (afp = afs; afp != NULL; afp = afp->af_next) {
652 if (afp->af_other_status == NULL)
654 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
656 afp->af_other_status(s);
657 setbit(afmask, afp->af_af);
662 af_all_tunnel_status(int s)
665 uint8_t afmask[howmany(AF_MAX, NBBY)];
667 memset(afmask, 0, sizeof(afmask));
668 for (afp = afs; afp != NULL; afp = afp->af_next) {
669 if (afp->af_status_tunnel == NULL)
671 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
673 afp->af_status_tunnel(s);
674 setbit(afmask, afp->af_af);
678 static struct cmd *cmds = NULL;
681 cmd_register(struct cmd *p)
687 static const struct cmd *
688 cmd_lookup(const char *name, int iscreate)
692 for (p = cmds; p != NULL; p = p->c_next)
693 if (strcmp(name, p->c_name) == 0) {
706 callback_func *cb_func;
708 struct callback *cb_next;
710 static struct callback *callbacks = NULL;
713 callback_register(callback_func *func, void *arg)
717 cb = malloc(sizeof(struct callback));
719 errx(1, "unable to allocate memory for callback");
722 cb->cb_next = callbacks;
726 /* specially-handled commands */
727 static void setifaddr(const char *, int, int, const struct afswtch *);
728 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr);
730 static void setifdstaddr(const char *, int, int, const struct afswtch *);
731 static const struct cmd setifdstaddr_cmd =
732 DEF_CMD("ifdstaddr", 0, setifdstaddr);
735 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp)
737 const struct afswtch *afp, *nafp;
742 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
747 * This is the historical "accident" allowing users to configure IPv4
748 * addresses without the "inet" keyword which while a nice feature has
749 * proven to complicate other things. We cannot remove this but only
750 * make sure we will never have a similar implicit default for IPv6 or
751 * any other address familiy. We need a fallback though for
752 * ifconfig IF up/down etc. to work without INET support as people
753 * never used ifconfig IF link up/down, etc. either.
757 if (afp == NULL && feature_present("inet"))
758 afp = af_getbyname("inet");
762 afp = af_getbyname("link");
764 warnx("Please specify an address_family.");
768 ifr.ifr_addr.sa_family =
769 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ?
770 AF_LOCAL : afp->af_af;
772 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 &&
773 (uafp != NULL || errno != EAFNOSUPPORT ||
774 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0))
775 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
778 p = cmd_lookup(*argv, iscreate);
779 if (iscreate && p == NULL) {
781 * Push the clone create callback so the new
782 * device is created and can be used for any
783 * remaining arguments.
787 errx(1, "internal error, no callback");
788 callbacks = cb->cb_next;
789 cb->cb_func(s, cb->cb_arg);
792 * Handle any address family spec that
793 * immediately follows and potentially
794 * recreate the socket.
796 nafp = af_getbyname(*argv);
806 * Look for a normal parameter.
812 * Not a recognized command, choose between setting
813 * the interface address and the dst address.
815 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd);
817 if (p->c_parameter == NEXTARG && p->c_u.c_func) {
819 errx(1, "'%s' requires argument",
821 p->c_u.c_func(argv[1], 0, s, afp);
823 } else if (p->c_parameter == OPTARG && p->c_u.c_func) {
824 p->c_u.c_func(argv[1], 0, s, afp);
827 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) {
829 errx(1, "'%s' requires 2 arguments",
831 p->c_u.c_func2(argv[1], argv[2], s, afp);
832 argc -= 2, argv += 2;
833 } else if (p->c_u.c_func)
834 p->c_u.c_func(*argv, p->c_parameter, s, afp);
839 * Do any post argument processing required by the address family.
841 if (afp->af_postproc != NULL)
842 afp->af_postproc(s, afp);
844 * Do deferred callbacks registered while processing
845 * command-line arguments.
847 for (cb = callbacks; cb != NULL; cb = cb->cb_next)
848 cb->cb_func(s, cb->cb_arg);
850 * Do deferred operations.
853 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
854 warnx("interface %s cannot change %s addresses!",
861 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name,
862 sizeof ifr.ifr_name);
863 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq);
865 if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
866 /* means no previous address for interface */
868 Perror("ioctl (SIOCDIFADDR)");
872 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
873 warnx("interface %s cannot change %s addresses!",
878 if (newaddr && (setaddr || setmask)) {
879 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name,
880 sizeof ifr.ifr_name);
881 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0)
882 Perror("ioctl (SIOCAIFADDR)");
891 setifaddr(const char *addr, int param, int s, const struct afswtch *afp)
893 if (afp->af_getaddr == NULL)
896 * Delay the ioctl to set the interface addr until flags are all set.
897 * The address interpretation may depend on the flags,
898 * and the flags may change when the address is set.
901 if (doalias == 0 && afp->af_af != AF_LINK)
903 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR));
907 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp)
909 struct addrinfo *srcres, *dstres;
912 if (afp->af_settunnel == NULL) {
913 warn("address family %s does not support tunnel setup",
918 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0)
919 errx(1, "error in parsing address string: %s",
920 gai_strerror(ecode));
922 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0)
923 errx(1, "error in parsing address string: %s",
924 gai_strerror(ecode));
926 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family)
928 "source and destination address families do not match");
930 afp->af_settunnel(s, srcres, dstres);
932 freeaddrinfo(srcres);
933 freeaddrinfo(dstres);
938 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp)
941 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0)
942 err(1, "SIOCDIFPHYADDR");
947 setifvnet(const char *jname, int dummy __unused, int s,
948 const struct afswtch *afp)
952 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
953 my_ifr.ifr_jid = jail_getid(jname);
954 if (my_ifr.ifr_jid < 0)
955 errx(1, "%s", jail_errmsg);
956 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0)
957 err(1, "SIOCSIFVNET");
961 setifrvnet(const char *jname, int dummy __unused, int s,
962 const struct afswtch *afp)
966 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
967 my_ifr.ifr_jid = jail_getid(jname);
968 if (my_ifr.ifr_jid < 0)
969 errx(1, "%s", jail_errmsg);
970 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0)
971 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name);
976 setifnetmask(const char *addr, int dummy __unused, int s,
977 const struct afswtch *afp)
979 if (afp->af_getaddr != NULL) {
981 afp->af_getaddr(addr, MASK);
986 setifbroadaddr(const char *addr, int dummy __unused, int s,
987 const struct afswtch *afp)
989 if (afp->af_getaddr != NULL)
990 afp->af_getaddr(addr, DSTADDR);
994 notealias(const char *addr, int param, int s, const struct afswtch *afp)
996 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
997 if (setaddr && doalias == 0 && param < 0)
998 if (afp->af_addreq != NULL && afp->af_ridreq != NULL)
999 bcopy((caddr_t)rqtosa(af_addreq),
1000 (caddr_t)rqtosa(af_ridreq),
1001 rqtosa(af_addreq)->sa_len);
1013 setifdstaddr(const char *addr, int param __unused, int s,
1014 const struct afswtch *afp)
1016 if (afp->af_getaddr != NULL)
1017 afp->af_getaddr(addr, DSTADDR);
1021 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion
1022 * of the ifreq structure, which may confuse other parts of ifconfig.
1023 * Make a private copy so we can avoid that.
1026 setifflags(const char *vname, int value, int s, const struct afswtch *afp)
1028 struct ifreq my_ifr;
1031 memset(&my_ifr, 0, sizeof(my_ifr));
1032 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name));
1034 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) {
1035 Perror("ioctl (SIOCGIFFLAGS)");
1038 flags = (my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16);
1045 my_ifr.ifr_flags = flags & 0xffff;
1046 my_ifr.ifr_flagshigh = flags >> 16;
1047 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)
1052 setifcap(const char *vname, int value, int s, const struct afswtch *afp)
1056 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) {
1057 Perror("ioctl (SIOCGIFCAP)");
1060 flags = ifr.ifr_curcap;
1066 flags &= ifr.ifr_reqcap;
1067 ifr.ifr_reqcap = flags;
1068 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0)
1073 setifmetric(const char *val, int dummy __unused, int s,
1074 const struct afswtch *afp)
1076 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1077 ifr.ifr_metric = atoi(val);
1078 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
1079 err(1, "ioctl SIOCSIFMETRIC (set metric)");
1083 setifmtu(const char *val, int dummy __unused, int s,
1084 const struct afswtch *afp)
1086 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1087 ifr.ifr_mtu = atoi(val);
1088 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
1089 err(1, "ioctl SIOCSIFMTU (set mtu)");
1093 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp)
1098 ul = strtoul(val, &endp, 0);
1100 errx(1, "invalid value for pcp");
1102 errx(1, "value for pcp out of range");
1103 ifr.ifr_lan_pcp = ul;
1104 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1105 err(1, "SIOCSLANPCP");
1109 disableifpcp(const char *val, int arg __unused, int s,
1110 const struct afswtch *afp)
1113 ifr.ifr_lan_pcp = IFNET_PCP_NONE;
1114 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1115 err(1, "SIOCSLANPCP");
1119 setifname(const char *val, int dummy __unused, int s,
1120 const struct afswtch *afp)
1124 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1126 newname = strdup(val);
1127 if (newname == NULL)
1128 err(1, "no memory to set ifname");
1129 ifr.ifr_data = newname;
1130 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) {
1132 err(1, "ioctl SIOCSIFNAME (set name)");
1135 strlcpy(name, newname, sizeof(name));
1141 setifdescr(const char *val, int dummy __unused, int s,
1142 const struct afswtch *afp)
1146 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1148 ifr.ifr_buffer.length = strlen(val) + 1;
1149 if (ifr.ifr_buffer.length == 1) {
1150 ifr.ifr_buffer.buffer = newdescr = NULL;
1151 ifr.ifr_buffer.length = 0;
1153 newdescr = strdup(val);
1154 ifr.ifr_buffer.buffer = newdescr;
1155 if (newdescr == NULL) {
1156 warn("no memory to set ifdescr");
1161 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0)
1162 err(1, "ioctl SIOCSIFDESCR (set descr)");
1169 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp)
1172 setifdescr("", 0, s, 0);
1176 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \
1177 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
1178 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP"
1181 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
1182 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \
1183 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \
1184 "\26RXCSUM_IPV6\27TXCSUM_IPV6"
1187 * Print the status of the interface. If an address family was
1188 * specified, show only it; otherwise, show them all.
1191 status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
1192 struct ifaddrs *ifa)
1194 struct ifaddrs *ift;
1200 ifr.ifr_addr.sa_family = AF_LOCAL;
1203 ifr.ifr_addr.sa_family =
1204 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af;
1206 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1208 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
1210 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
1212 printf("%s: ", name);
1213 printb("flags", ifa->ifa_flags, IFFBITS);
1214 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1)
1215 printf(" metric %d", ifr.ifr_metric);
1216 if (ioctl(s, SIOCGIFMTU, &ifr) != -1)
1217 printf(" mtu %d", ifr.ifr_mtu);
1221 if ((descr = reallocf(descr, descrlen)) != NULL) {
1222 ifr.ifr_buffer.buffer = descr;
1223 ifr.ifr_buffer.length = descrlen;
1224 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) {
1225 if (ifr.ifr_buffer.buffer == descr) {
1226 if (strlen(descr) > 0)
1227 printf("\tdescription: %s\n",
1229 } else if (ifr.ifr_buffer.length > descrlen) {
1230 descrlen = ifr.ifr_buffer.length;
1235 warn("unable to allocate memory for interface"
1240 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) {
1241 if (ifr.ifr_curcap != 0) {
1242 printb("\toptions", ifr.ifr_curcap, IFCAPBITS);
1245 if (supmedia && ifr.ifr_reqcap != 0) {
1246 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS);
1253 for (ift = ifa; ift != NULL; ift = ift->ifa_next) {
1254 if (ift->ifa_addr == NULL)
1256 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0)
1259 const struct afswtch *p;
1260 p = af_getbyfamily(ift->ifa_addr->sa_family);
1261 if (p != NULL && p->af_status != NULL)
1262 p->af_status(s, ift);
1263 } else if (afp->af_af == ift->ifa_addr->sa_family)
1264 afp->af_status(s, ift);
1267 if (allfamilies || afp->af_af == AF_LINK) {
1268 const struct afswtch *lafp;
1271 * Hack; the link level address is received separately
1272 * from the routing information so any address is not
1273 * handled above. Cobble together an entry and invoke
1274 * the status method specially.
1276 lafp = af_getbyname("lladdr");
1278 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl;
1279 lafp->af_status(s, &info);
1285 else if (afp->af_other_status != NULL)
1286 afp->af_other_status(s);
1288 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
1289 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
1290 printf("%s", ifs.ascii);
1293 sfp_status(s, &ifr, verbose);
1300 tunnel_status(int s)
1302 af_all_tunnel_status(s);
1306 Perror(const char *cmd)
1311 errx(1, "%s: no such interface", cmd);
1315 errx(1, "%s: permission denied", cmd);
1324 * Print a value a la the %b format of the kernel's printf
1327 printb(const char *s, unsigned v, const char *bits)
1332 if (bits && *bits == 8)
1333 printf("%s=%o", s, v);
1335 printf("%s=%x", s, v);
1339 while ((i = *bits++) != '\0') {
1340 if (v & (1 << (i-1))) {
1344 for (; (c = *bits) > 32; bits++)
1347 for (; *bits > 32; bits++)
1355 print_vhid(const struct ifaddrs *ifa, const char *s)
1357 struct if_data *ifd;
1359 if (ifa->ifa_data == NULL)
1362 ifd = ifa->ifa_data;
1363 if (ifd->ifi_vhid == 0)
1366 printf(" vhid %d", ifd->ifi_vhid);
1370 ifmaybeload(const char *name)
1372 #define MOD_PREFIX_LEN 3 /* "if_" */
1373 struct module_stat mstat;
1375 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp;
1378 /* loading suppressed by the user */
1382 /* trim the interface number off the end */
1383 strlcpy(ifname, name, sizeof(ifname));
1384 for (dp = ifname; *dp != 0; dp++)
1390 /* turn interface and unit into module name */
1391 strlcpy(ifkind, "if_", sizeof(ifkind));
1392 strlcat(ifkind, ifname, sizeof(ifkind));
1394 /* scan files in kernel */
1395 mstat.version = sizeof(struct module_stat);
1396 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
1397 /* scan modules in file */
1398 for (modid = kldfirstmod(fileid); modid > 0;
1399 modid = modfnext(modid)) {
1400 if (modstat(modid, &mstat) < 0)
1402 /* strip bus name if present */
1403 if ((cp = strchr(mstat.name, '/')) != NULL) {
1408 /* already loaded? */
1409 if (strcmp(ifname, cp) == 0 ||
1410 strcmp(ifkind, cp) == 0)
1416 * Try to load the module. But ignore failures, because ifconfig can't
1417 * infer the names of all drivers (eg mlx4en(4)).
1419 (void) kldload(ifkind);
1422 static struct cmd basic_cmds[] = {
1423 DEF_CMD("up", IFF_UP, setifflags),
1424 DEF_CMD("down", -IFF_UP, setifflags),
1425 DEF_CMD("arp", -IFF_NOARP, setifflags),
1426 DEF_CMD("-arp", IFF_NOARP, setifflags),
1427 DEF_CMD("debug", IFF_DEBUG, setifflags),
1428 DEF_CMD("-debug", -IFF_DEBUG, setifflags),
1429 DEF_CMD_ARG("description", setifdescr),
1430 DEF_CMD_ARG("descr", setifdescr),
1431 DEF_CMD("-description", 0, unsetifdescr),
1432 DEF_CMD("-descr", 0, unsetifdescr),
1433 DEF_CMD("promisc", IFF_PPROMISC, setifflags),
1434 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags),
1435 DEF_CMD("add", IFF_UP, notealias),
1436 DEF_CMD("alias", IFF_UP, notealias),
1437 DEF_CMD("-alias", -IFF_UP, notealias),
1438 DEF_CMD("delete", -IFF_UP, notealias),
1439 DEF_CMD("remove", -IFF_UP, notealias),
1441 #define EN_SWABIPS 0x1000
1442 DEF_CMD("swabips", EN_SWABIPS, setifflags),
1443 DEF_CMD("-swabips", -EN_SWABIPS, setifflags),
1445 DEF_CMD_ARG("netmask", setifnetmask),
1446 DEF_CMD_ARG("metric", setifmetric),
1447 DEF_CMD_ARG("broadcast", setifbroadaddr),
1448 DEF_CMD_ARG2("tunnel", settunnel),
1449 DEF_CMD("-tunnel", 0, deletetunnel),
1450 DEF_CMD("deletetunnel", 0, deletetunnel),
1452 DEF_CMD_ARG("vnet", setifvnet),
1453 DEF_CMD_ARG("-vnet", setifrvnet),
1455 DEF_CMD("link0", IFF_LINK0, setifflags),
1456 DEF_CMD("-link0", -IFF_LINK0, setifflags),
1457 DEF_CMD("link1", IFF_LINK1, setifflags),
1458 DEF_CMD("-link1", -IFF_LINK1, setifflags),
1459 DEF_CMD("link2", IFF_LINK2, setifflags),
1460 DEF_CMD("-link2", -IFF_LINK2, setifflags),
1461 DEF_CMD("monitor", IFF_MONITOR, setifflags),
1462 DEF_CMD("-monitor", -IFF_MONITOR, setifflags),
1463 DEF_CMD("staticarp", IFF_STATICARP, setifflags),
1464 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags),
1465 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap),
1466 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap),
1467 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap),
1468 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap),
1469 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap),
1470 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap),
1471 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap),
1472 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap),
1473 DEF_CMD("netcons", IFCAP_NETCONS, setifcap),
1474 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap),
1475 DEF_CMD_ARG("pcp", setifpcp),
1476 DEF_CMD("-pcp", 0, disableifpcp),
1477 DEF_CMD("polling", IFCAP_POLLING, setifcap),
1478 DEF_CMD("-polling", -IFCAP_POLLING, setifcap),
1479 DEF_CMD("tso6", IFCAP_TSO6, setifcap),
1480 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap),
1481 DEF_CMD("tso4", IFCAP_TSO4, setifcap),
1482 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap),
1483 DEF_CMD("tso", IFCAP_TSO, setifcap),
1484 DEF_CMD("-tso", -IFCAP_TSO, setifcap),
1485 DEF_CMD("toe", IFCAP_TOE, setifcap),
1486 DEF_CMD("-toe", -IFCAP_TOE, setifcap),
1487 DEF_CMD("lro", IFCAP_LRO, setifcap),
1488 DEF_CMD("-lro", -IFCAP_LRO, setifcap),
1489 DEF_CMD("wol", IFCAP_WOL, setifcap),
1490 DEF_CMD("-wol", -IFCAP_WOL, setifcap),
1491 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap),
1492 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap),
1493 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap),
1494 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap),
1495 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap),
1496 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap),
1497 DEF_CMD("normal", -IFF_LINK0, setifflags),
1498 DEF_CMD("compress", IFF_LINK0, setifflags),
1499 DEF_CMD("noicmp", IFF_LINK1, setifflags),
1500 DEF_CMD_ARG("mtu", setifmtu),
1501 DEF_CMD_ARG("name", setifname),
1504 static __constructor void
1509 for (i = 0; i < nitems(basic_cmds); i++)
1510 cmd_register(&basic_cmds[i]);