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 * 3. 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 void usage(void) _Noreturn;
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);
507 /* Check for address family */
509 afp = af_getbyname(*argv);
514 if (getifaddrs(&ifap) != 0)
515 err(EXIT_FAILURE, "getifaddrs");
519 if (calcorders(ifap, &q) != 0)
520 err(EXIT_FAILURE, "calcorders");
522 sifap = sortifaddrs(ifap, cmpifaddrs, &q);
524 TAILQ_FOREACH_SAFE(cur, &q, link, tmp)
528 for (ifa = sifap; ifa; ifa = ifa->ifa_next) {
529 memset(&paifr, 0, sizeof(paifr));
530 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));
531 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
532 memcpy(&paifr.ifr_addr, ifa->ifa_addr,
533 ifa->ifa_addr->sa_len);
536 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
538 if (ifa->ifa_addr->sa_family == AF_LINK)
539 sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
542 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly)
544 iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
545 if (iflen >= sizeof(name)) {
546 warnx("%s: interface name too long, skipping",
552 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0)
554 if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
556 if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
559 * Are we just listing the interfaces?
565 /* special case for "ether" address family */
566 if (!strcmp(afp->af_name, "ether")) {
568 (sdl->sdl_type != IFT_ETHER &&
569 sdl->sdl_type != IFT_L2VLAN &&
570 sdl->sdl_type != IFT_BRIDGE) ||
571 sdl->sdl_alen != ETHER_ADDR_LEN)
574 if (ifa->ifa_addr->sa_family
589 ifconfig(argc, argv, 0, afp);
591 status(afp, sdl, ifa);
601 static struct afswtch *afs = NULL;
604 af_register(struct afswtch *p)
610 static struct afswtch *
611 af_getbyname(const char *name)
615 for (afp = afs; afp != NULL; afp = afp->af_next)
616 if (strcmp(afp->af_name, name) == 0)
621 static struct afswtch *
622 af_getbyfamily(int af)
626 for (afp = afs; afp != NULL; afp = afp->af_next)
627 if (afp->af_af == af)
633 af_other_status(int s)
636 uint8_t afmask[howmany(AF_MAX, NBBY)];
638 memset(afmask, 0, sizeof(afmask));
639 for (afp = afs; afp != NULL; afp = afp->af_next) {
640 if (afp->af_other_status == NULL)
642 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
644 afp->af_other_status(s);
645 setbit(afmask, afp->af_af);
650 af_all_tunnel_status(int s)
653 uint8_t afmask[howmany(AF_MAX, NBBY)];
655 memset(afmask, 0, sizeof(afmask));
656 for (afp = afs; afp != NULL; afp = afp->af_next) {
657 if (afp->af_status_tunnel == NULL)
659 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
661 afp->af_status_tunnel(s);
662 setbit(afmask, afp->af_af);
666 static struct cmd *cmds = NULL;
669 cmd_register(struct cmd *p)
675 static const struct cmd *
676 cmd_lookup(const char *name, int iscreate)
680 for (p = cmds; p != NULL; p = p->c_next)
681 if (strcmp(name, p->c_name) == 0) {
694 callback_func *cb_func;
696 struct callback *cb_next;
698 static struct callback *callbacks = NULL;
701 callback_register(callback_func *func, void *arg)
705 cb = malloc(sizeof(struct callback));
707 errx(1, "unable to allocate memory for callback");
710 cb->cb_next = callbacks;
714 /* specially-handled commands */
715 static void setifaddr(const char *, int, int, const struct afswtch *);
716 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr);
718 static void setifdstaddr(const char *, int, int, const struct afswtch *);
719 static const struct cmd setifdstaddr_cmd =
720 DEF_CMD("ifdstaddr", 0, setifdstaddr);
723 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp)
725 const struct afswtch *afp, *nafp;
730 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
735 * This is the historical "accident" allowing users to configure IPv4
736 * addresses without the "inet" keyword which while a nice feature has
737 * proven to complicate other things. We cannot remove this but only
738 * make sure we will never have a similar implicit default for IPv6 or
739 * any other address familiy. We need a fallback though for
740 * ifconfig IF up/down etc. to work without INET support as people
741 * never used ifconfig IF link up/down, etc. either.
745 if (afp == NULL && feature_present("inet"))
746 afp = af_getbyname("inet");
750 afp = af_getbyname("link");
752 warnx("Please specify an address_family.");
756 ifr.ifr_addr.sa_family =
757 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ?
758 AF_LOCAL : afp->af_af;
760 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 &&
761 (uafp != NULL || errno != EAFNOSUPPORT ||
762 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0))
763 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
766 p = cmd_lookup(*argv, iscreate);
767 if (iscreate && p == NULL) {
769 * Push the clone create callback so the new
770 * device is created and can be used for any
771 * remaining arguments.
775 errx(1, "internal error, no callback");
776 callbacks = cb->cb_next;
777 cb->cb_func(s, cb->cb_arg);
780 * Handle any address family spec that
781 * immediately follows and potentially
782 * recreate the socket.
784 nafp = af_getbyname(*argv);
794 * Look for a normal parameter.
800 * Not a recognized command, choose between setting
801 * the interface address and the dst address.
803 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd);
805 if (p->c_parameter == NEXTARG && p->c_u.c_func) {
807 errx(1, "'%s' requires argument",
809 p->c_u.c_func(argv[1], 0, s, afp);
811 } else if (p->c_parameter == OPTARG && p->c_u.c_func) {
812 p->c_u.c_func(argv[1], 0, s, afp);
815 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) {
817 errx(1, "'%s' requires 2 arguments",
819 p->c_u.c_func2(argv[1], argv[2], s, afp);
820 argc -= 2, argv += 2;
821 } else if (p->c_u.c_func)
822 p->c_u.c_func(*argv, p->c_parameter, s, afp);
827 * Do any post argument processing required by the address family.
829 if (afp->af_postproc != NULL)
830 afp->af_postproc(s, afp);
832 * Do deferred callbacks registered while processing
833 * command-line arguments.
835 for (cb = callbacks; cb != NULL; cb = cb->cb_next)
836 cb->cb_func(s, cb->cb_arg);
838 * Do deferred operations.
841 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
842 warnx("interface %s cannot change %s addresses!",
849 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name,
850 sizeof ifr.ifr_name);
851 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq);
853 if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
854 /* means no previous address for interface */
856 Perror("ioctl (SIOCDIFADDR)");
860 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
861 warnx("interface %s cannot change %s addresses!",
866 if (newaddr && (setaddr || setmask)) {
867 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name,
868 sizeof ifr.ifr_name);
869 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0)
870 Perror("ioctl (SIOCAIFADDR)");
879 setifaddr(const char *addr, int param, int s, const struct afswtch *afp)
881 if (afp->af_getaddr == NULL)
884 * Delay the ioctl to set the interface addr until flags are all set.
885 * The address interpretation may depend on the flags,
886 * and the flags may change when the address is set.
889 if (doalias == 0 && afp->af_af != AF_LINK)
891 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR));
895 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp)
897 struct addrinfo *srcres, *dstres;
900 if (afp->af_settunnel == NULL) {
901 warn("address family %s does not support tunnel setup",
906 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0)
907 errx(1, "error in parsing address string: %s",
908 gai_strerror(ecode));
910 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0)
911 errx(1, "error in parsing address string: %s",
912 gai_strerror(ecode));
914 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family)
916 "source and destination address families do not match");
918 afp->af_settunnel(s, srcres, dstres);
920 freeaddrinfo(srcres);
921 freeaddrinfo(dstres);
926 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp)
929 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0)
930 err(1, "SIOCDIFPHYADDR");
935 setifvnet(const char *jname, int dummy __unused, int s,
936 const struct afswtch *afp)
940 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
941 my_ifr.ifr_jid = jail_getid(jname);
942 if (my_ifr.ifr_jid < 0)
943 errx(1, "%s", jail_errmsg);
944 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0)
945 err(1, "SIOCSIFVNET");
949 setifrvnet(const char *jname, int dummy __unused, int s,
950 const struct afswtch *afp)
954 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
955 my_ifr.ifr_jid = jail_getid(jname);
956 if (my_ifr.ifr_jid < 0)
957 errx(1, "%s", jail_errmsg);
958 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0)
959 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name);
964 setifnetmask(const char *addr, int dummy __unused, int s,
965 const struct afswtch *afp)
967 if (afp->af_getaddr != NULL) {
969 afp->af_getaddr(addr, MASK);
974 setifbroadaddr(const char *addr, int dummy __unused, int s,
975 const struct afswtch *afp)
977 if (afp->af_getaddr != NULL)
978 afp->af_getaddr(addr, DSTADDR);
982 notealias(const char *addr, int param, int s, const struct afswtch *afp)
984 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
985 if (setaddr && doalias == 0 && param < 0)
986 if (afp->af_addreq != NULL && afp->af_ridreq != NULL)
987 bcopy((caddr_t)rqtosa(af_addreq),
988 (caddr_t)rqtosa(af_ridreq),
989 rqtosa(af_addreq)->sa_len);
1001 setifdstaddr(const char *addr, int param __unused, int s,
1002 const struct afswtch *afp)
1004 if (afp->af_getaddr != NULL)
1005 afp->af_getaddr(addr, DSTADDR);
1009 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion
1010 * of the ifreq structure, which may confuse other parts of ifconfig.
1011 * Make a private copy so we can avoid that.
1014 setifflags(const char *vname, int value, int s, const struct afswtch *afp)
1016 struct ifreq my_ifr;
1019 memset(&my_ifr, 0, sizeof(my_ifr));
1020 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name));
1022 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) {
1023 Perror("ioctl (SIOCGIFFLAGS)");
1026 flags = (my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16);
1033 my_ifr.ifr_flags = flags & 0xffff;
1034 my_ifr.ifr_flagshigh = flags >> 16;
1035 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)
1040 setifcap(const char *vname, int value, int s, const struct afswtch *afp)
1044 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) {
1045 Perror("ioctl (SIOCGIFCAP)");
1048 flags = ifr.ifr_curcap;
1054 flags &= ifr.ifr_reqcap;
1055 ifr.ifr_reqcap = flags;
1056 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0)
1061 setifmetric(const char *val, int dummy __unused, int s,
1062 const struct afswtch *afp)
1064 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1065 ifr.ifr_metric = atoi(val);
1066 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
1067 err(1, "ioctl SIOCSIFMETRIC (set metric)");
1071 setifmtu(const char *val, int dummy __unused, int s,
1072 const struct afswtch *afp)
1074 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1075 ifr.ifr_mtu = atoi(val);
1076 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
1077 err(1, "ioctl SIOCSIFMTU (set mtu)");
1081 setifname(const char *val, int dummy __unused, int s,
1082 const struct afswtch *afp)
1086 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1088 newname = strdup(val);
1089 if (newname == NULL)
1090 err(1, "no memory to set ifname");
1091 ifr.ifr_data = newname;
1092 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) {
1094 err(1, "ioctl SIOCSIFNAME (set name)");
1097 strlcpy(name, newname, sizeof(name));
1103 setifdescr(const char *val, int dummy __unused, int s,
1104 const struct afswtch *afp)
1108 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1110 ifr.ifr_buffer.length = strlen(val) + 1;
1111 if (ifr.ifr_buffer.length == 1) {
1112 ifr.ifr_buffer.buffer = newdescr = NULL;
1113 ifr.ifr_buffer.length = 0;
1115 newdescr = strdup(val);
1116 ifr.ifr_buffer.buffer = newdescr;
1117 if (newdescr == NULL) {
1118 warn("no memory to set ifdescr");
1123 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0)
1124 err(1, "ioctl SIOCSIFDESCR (set descr)");
1131 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp)
1134 setifdescr("", 0, s, 0);
1138 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \
1139 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
1140 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP"
1143 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
1144 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \
1145 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \
1146 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT"
1149 * Print the status of the interface. If an address family was
1150 * specified, show only it; otherwise, show them all.
1153 status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
1154 struct ifaddrs *ifa)
1156 struct ifaddrs *ift;
1162 ifr.ifr_addr.sa_family = AF_LOCAL;
1165 ifr.ifr_addr.sa_family =
1166 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af;
1168 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1170 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
1172 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
1174 printf("%s: ", name);
1175 printb("flags", ifa->ifa_flags, IFFBITS);
1176 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1)
1177 printf(" metric %d", ifr.ifr_metric);
1178 if (ioctl(s, SIOCGIFMTU, &ifr) != -1)
1179 printf(" mtu %d", ifr.ifr_mtu);
1183 if ((descr = reallocf(descr, descrlen)) != NULL) {
1184 ifr.ifr_buffer.buffer = descr;
1185 ifr.ifr_buffer.length = descrlen;
1186 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) {
1187 if (ifr.ifr_buffer.buffer == descr) {
1188 if (strlen(descr) > 0)
1189 printf("\tdescription: %s\n",
1191 } else if (ifr.ifr_buffer.length > descrlen) {
1192 descrlen = ifr.ifr_buffer.length;
1197 warn("unable to allocate memory for interface"
1202 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) {
1203 if (ifr.ifr_curcap != 0) {
1204 printb("\toptions", ifr.ifr_curcap, IFCAPBITS);
1207 if (supmedia && ifr.ifr_reqcap != 0) {
1208 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS);
1215 for (ift = ifa; ift != NULL; ift = ift->ifa_next) {
1216 if (ift->ifa_addr == NULL)
1218 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0)
1221 const struct afswtch *p;
1222 p = af_getbyfamily(ift->ifa_addr->sa_family);
1223 if (p != NULL && p->af_status != NULL)
1224 p->af_status(s, ift);
1225 } else if (afp->af_af == ift->ifa_addr->sa_family)
1226 afp->af_status(s, ift);
1229 if (allfamilies || afp->af_af == AF_LINK) {
1230 const struct afswtch *lafp;
1233 * Hack; the link level address is received separately
1234 * from the routing information so any address is not
1235 * handled above. Cobble together an entry and invoke
1236 * the status method specially.
1238 lafp = af_getbyname("lladdr");
1240 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl;
1241 lafp->af_status(s, &info);
1247 else if (afp->af_other_status != NULL)
1248 afp->af_other_status(s);
1250 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
1251 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
1252 printf("%s", ifs.ascii);
1255 sfp_status(s, &ifr, verbose);
1262 tunnel_status(int s)
1264 af_all_tunnel_status(s);
1268 Perror(const char *cmd)
1273 errx(1, "%s: no such interface", cmd);
1277 errx(1, "%s: permission denied", cmd);
1286 * Print a value a la the %b format of the kernel's printf
1289 printb(const char *s, unsigned v, const char *bits)
1294 if (bits && *bits == 8)
1295 printf("%s=%o", s, v);
1297 printf("%s=%x", s, v);
1301 while ((i = *bits++) != '\0') {
1302 if (v & (1 << (i-1))) {
1306 for (; (c = *bits) > 32; bits++)
1309 for (; *bits > 32; bits++)
1317 print_vhid(const struct ifaddrs *ifa, const char *s)
1319 struct if_data *ifd;
1321 if (ifa->ifa_data == NULL)
1324 ifd = ifa->ifa_data;
1325 if (ifd->ifi_vhid == 0)
1328 printf("vhid %d ", ifd->ifi_vhid);
1332 ifmaybeload(const char *name)
1334 #define MOD_PREFIX_LEN 3 /* "if_" */
1335 struct module_stat mstat;
1337 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp;
1340 /* loading suppressed by the user */
1344 /* trim the interface number off the end */
1345 strlcpy(ifname, name, sizeof(ifname));
1346 for (dp = ifname; *dp != 0; dp++)
1352 /* turn interface and unit into module name */
1353 strlcpy(ifkind, "if_", sizeof(ifkind));
1354 strlcat(ifkind, ifname, sizeof(ifkind));
1356 /* scan files in kernel */
1357 mstat.version = sizeof(struct module_stat);
1358 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
1359 /* scan modules in file */
1360 for (modid = kldfirstmod(fileid); modid > 0;
1361 modid = modfnext(modid)) {
1362 if (modstat(modid, &mstat) < 0)
1364 /* strip bus name if present */
1365 if ((cp = strchr(mstat.name, '/')) != NULL) {
1370 /* already loaded? */
1371 if (strcmp(ifname, cp) == 0 ||
1372 strcmp(ifkind, cp) == 0)
1378 * Try to load the module. But ignore failures, because ifconfig can't
1379 * infer the names of all drivers (eg mlx4en(4)).
1381 (void) kldload(ifkind);
1384 static struct cmd basic_cmds[] = {
1385 DEF_CMD("up", IFF_UP, setifflags),
1386 DEF_CMD("down", -IFF_UP, setifflags),
1387 DEF_CMD("arp", -IFF_NOARP, setifflags),
1388 DEF_CMD("-arp", IFF_NOARP, setifflags),
1389 DEF_CMD("debug", IFF_DEBUG, setifflags),
1390 DEF_CMD("-debug", -IFF_DEBUG, setifflags),
1391 DEF_CMD_ARG("description", setifdescr),
1392 DEF_CMD_ARG("descr", setifdescr),
1393 DEF_CMD("-description", 0, unsetifdescr),
1394 DEF_CMD("-descr", 0, unsetifdescr),
1395 DEF_CMD("promisc", IFF_PPROMISC, setifflags),
1396 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags),
1397 DEF_CMD("add", IFF_UP, notealias),
1398 DEF_CMD("alias", IFF_UP, notealias),
1399 DEF_CMD("-alias", -IFF_UP, notealias),
1400 DEF_CMD("delete", -IFF_UP, notealias),
1401 DEF_CMD("remove", -IFF_UP, notealias),
1403 #define EN_SWABIPS 0x1000
1404 DEF_CMD("swabips", EN_SWABIPS, setifflags),
1405 DEF_CMD("-swabips", -EN_SWABIPS, setifflags),
1407 DEF_CMD_ARG("netmask", setifnetmask),
1408 DEF_CMD_ARG("metric", setifmetric),
1409 DEF_CMD_ARG("broadcast", setifbroadaddr),
1410 DEF_CMD_ARG2("tunnel", settunnel),
1411 DEF_CMD("-tunnel", 0, deletetunnel),
1412 DEF_CMD("deletetunnel", 0, deletetunnel),
1414 DEF_CMD_ARG("vnet", setifvnet),
1415 DEF_CMD_ARG("-vnet", setifrvnet),
1417 DEF_CMD("link0", IFF_LINK0, setifflags),
1418 DEF_CMD("-link0", -IFF_LINK0, setifflags),
1419 DEF_CMD("link1", IFF_LINK1, setifflags),
1420 DEF_CMD("-link1", -IFF_LINK1, setifflags),
1421 DEF_CMD("link2", IFF_LINK2, setifflags),
1422 DEF_CMD("-link2", -IFF_LINK2, setifflags),
1423 DEF_CMD("monitor", IFF_MONITOR, setifflags),
1424 DEF_CMD("-monitor", -IFF_MONITOR, setifflags),
1425 DEF_CMD("staticarp", IFF_STATICARP, setifflags),
1426 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags),
1427 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap),
1428 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap),
1429 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap),
1430 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap),
1431 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap),
1432 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap),
1433 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap),
1434 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap),
1435 DEF_CMD("netcons", IFCAP_NETCONS, setifcap),
1436 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap),
1437 DEF_CMD("polling", IFCAP_POLLING, setifcap),
1438 DEF_CMD("-polling", -IFCAP_POLLING, setifcap),
1439 DEF_CMD("tso6", IFCAP_TSO6, setifcap),
1440 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap),
1441 DEF_CMD("tso4", IFCAP_TSO4, setifcap),
1442 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap),
1443 DEF_CMD("tso", IFCAP_TSO, setifcap),
1444 DEF_CMD("-tso", -IFCAP_TSO, setifcap),
1445 DEF_CMD("toe", IFCAP_TOE, setifcap),
1446 DEF_CMD("-toe", -IFCAP_TOE, setifcap),
1447 DEF_CMD("lro", IFCAP_LRO, setifcap),
1448 DEF_CMD("-lro", -IFCAP_LRO, setifcap),
1449 DEF_CMD("wol", IFCAP_WOL, setifcap),
1450 DEF_CMD("-wol", -IFCAP_WOL, setifcap),
1451 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap),
1452 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap),
1453 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap),
1454 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap),
1455 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap),
1456 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap),
1457 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap),
1458 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap),
1459 DEF_CMD("normal", -IFF_LINK0, setifflags),
1460 DEF_CMD("compress", IFF_LINK0, setifflags),
1461 DEF_CMD("noicmp", IFF_LINK1, setifflags),
1462 DEF_CMD_ARG("mtu", setifmtu),
1463 DEF_CMD_ARG("name", setifname),
1466 static __constructor void
1471 for (i = 0; i < nitems(basic_cmds); i++)
1472 cmd_register(&basic_cmds[i]);