2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
33 static const char copyright[] =
34 "@(#) Copyright (c) 1983, 1993\n\
35 The Regents of the University of California. All rights reserved.\n";
40 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94";
42 static const char rcsid[] =
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>
54 #include <net/ethernet.h>
56 #include <net/if_dl.h>
57 #include <net/if_types.h>
58 #include <net/route.h>
61 #include <netinet/in.h>
62 #include <netinet/in_var.h>
63 #include <arpa/inet.h>
82 * Since "struct ifreq" is composed of various union members, callers
83 * should pay special attention to interpret the value.
84 * (.e.g. little/big endian difference in the structure.)
101 int printkeys = 0; /* Print keying material for interfaces. */
104 /* Formatter Strings */
105 char *f_inet, *f_inet6, *f_ether, *f_addr;
107 static int ifconfig(int argc, char *const *argv, int iscreate,
108 const struct afswtch *afp);
109 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
110 struct ifaddrs *ifa);
111 static void tunnel_status(int s);
112 static _Noreturn void usage(void);
114 static int getifflags(const char *ifname, int us);
116 static struct afswtch *af_getbyname(const char *name);
117 static struct afswtch *af_getbyfamily(int af);
118 static void af_other_status(int);
120 void printifnamemaybe(void);
122 static struct option *opts = NULL;
124 struct ifa_order_elt {
128 TAILQ_ENTRY(ifa_order_elt) link;
131 TAILQ_HEAD(ifa_queue, ifa_order_elt);
134 opt_register(struct option *p)
146 /* XXX not right but close enough for now */
148 for (p = opts; p != NULL; p = p->next) {
149 strlcat(options, p->opt_usage, sizeof(options));
150 strlcat(options, " ", sizeof(options));
154 "usage: ifconfig [-f type:format] %sinterface address_family\n"
155 " [address [dest_address]] [parameters]\n"
156 " ifconfig interface create\n"
157 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n"
158 " ifconfig -l [-d] [-u] [address_family]\n"
159 " ifconfig %s[-d] [-m] [-u] [-v]\n",
160 options, options, options);
164 #define ORDERS_SIZE(x) sizeof(x) / sizeof(x[0])
167 calcorders(struct ifaddrs *ifa, struct ifa_queue *q)
169 struct ifaddrs *prev;
170 struct ifa_order_elt *cur;
171 unsigned int ord, af, ifa_ord;
178 while (ifa != NULL) {
180 strcmp(ifa->ifa_name, prev->ifa_name) != 0) {
181 cur = calloc(1, sizeof(*cur));
186 TAILQ_INSERT_TAIL(q, cur, link);
187 cur->if_order = ifa_ord ++;
193 af = ifa->ifa_addr->sa_family;
195 if (af < ORDERS_SIZE(cur->af_orders) &&
196 cur->af_orders[af] == 0)
197 cur->af_orders[af] = ++ord;
207 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q)
209 struct ifa_order_elt *cur, *e1, *e2;
210 unsigned int af1, af2;
215 ret = strcmp(a->ifa_name, b->ifa_name);
217 TAILQ_FOREACH(cur, q, link) {
221 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0)
223 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0)
230 return (e1->if_order - e2->if_order);
232 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) {
233 TAILQ_FOREACH(cur, q, link) {
234 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) {
243 af1 = a->ifa_addr->sa_family;
244 af2 = b->ifa_addr->sa_family;
246 if (af1 < ORDERS_SIZE(e1->af_orders) &&
247 af2 < ORDERS_SIZE(e1->af_orders))
248 return (e1->af_orders[af1] - e1->af_orders[af2]);
254 static void freeformat(void)
267 static void setformat(char *input)
269 char *formatstr, *category, *modifier;
271 formatstr = strdup(input);
272 while ((category = strsep(&formatstr, ",")) != NULL) {
273 modifier = strchr(category, ':');
274 if (modifier == NULL || modifier[1] == '\0') {
275 warnx("Skipping invalid format specification: %s\n",
280 /* Split the string on the separator, then seek past it */
284 if (strcmp(category, "addr") == 0)
285 f_addr = strdup(modifier);
286 else if (strcmp(category, "ether") == 0)
287 f_ether = strdup(modifier);
288 else if (strcmp(category, "inet") == 0)
289 f_inet = strdup(modifier);
290 else if (strcmp(category, "inet6") == 0)
291 f_inet6 = strdup(modifier);
298 static struct ifaddrs *
299 sortifaddrs(struct ifaddrs *list,
300 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *),
303 struct ifaddrs *right, *temp, *last, *result, *next, *tail;
312 if (!list || !list->ifa_next)
315 while (temp && temp->ifa_next) {
317 right = right->ifa_next;
318 temp = temp->ifa_next->ifa_next;
321 last->ifa_next = NULL;
323 list = sortifaddrs(list, compare, q);
324 right = sortifaddrs(right, compare, q);
326 while (list || right) {
330 list = list->ifa_next;
333 right = right->ifa_next;
334 } else if (compare(list, right, q) <= 0) {
336 list = list->ifa_next;
339 right = right->ifa_next;
345 tail->ifa_next = next;
353 void printifnamemaybe()
356 printf("%s\n", name);
360 main(int argc, char *argv[])
362 int c, all, namesonly, downonly, uponly;
363 const struct afswtch *afp = NULL;
365 struct ifaddrs *ifap, *sifap, *ifa;
367 const struct sockaddr_dl *sdl;
368 char options[1024], *cp, *envformat, *namecp = NULL;
369 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q);
370 struct ifa_order_elt *cur, *tmp;
376 all = downonly = uponly = namesonly = noload = verbose = 0;
377 f_inet = f_inet6 = f_ether = f_addr = NULL;
379 envformat = getenv("IFCONFIG_FORMAT");
380 if (envformat != NULL)
381 setformat(envformat);
384 * Ensure we print interface name when expected to,
385 * even if we terminate early due to error.
387 atexit(printifnamemaybe);
389 /* Parse leading line options */
390 strlcpy(options, "f:adklmnuv", sizeof(options));
391 for (p = opts; p != NULL; p = p->next)
392 strlcat(options, p->opt, sizeof(options));
393 while ((c = getopt(argc, argv, options)) != -1) {
395 case 'a': /* scan all interfaces */
398 case 'd': /* restrict scan to "down" interfaces */
409 case 'l': /* scan interface names only */
412 case 'm': /* show media choices in status */
415 case 'n': /* suppress module loading */
418 case 'u': /* restrict scan to "up" interfaces */
425 for (p = opts; p != NULL; p = p->next)
426 if (p->opt[0] == c) {
438 /* -l cannot be used with -a or -m */
439 if (namesonly && (all || supmedia))
443 if (uponly && downonly)
446 /* no arguments is equivalent to '-a' */
447 if (!namesonly && argc < 1)
450 /* -a and -l allow an address family arg to limit the output */
451 if (all || namesonly) {
458 afp = af_getbyname(*argv);
460 warnx("Address family '%s' unknown.", *argv);
463 if (afp->af_name != NULL)
465 /* leave with afp non-zero */
468 /* not listing, need an argument */
475 /* check and maybe load support for this interface */
478 ifindex = if_nametoindex(ifname);
481 * NOTE: We must special-case the `create' command
482 * right here as we would otherwise fail when trying
483 * to find the interface.
485 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
486 strcmp(argv[0], "plumb") == 0)) {
487 iflen = strlcpy(name, ifname, sizeof(name));
488 if (iflen >= sizeof(name))
489 errx(1, "%s: cloning name too long",
491 ifconfig(argc, argv, 1, NULL);
496 * NOTE: We have to special-case the `-vnet' command
497 * right here as we would otherwise fail when trying
498 * to find the interface as it lives in another vnet.
500 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) {
501 iflen = strlcpy(name, ifname, sizeof(name));
502 if (iflen >= sizeof(name))
503 errx(1, "%s: interface name too long",
505 ifconfig(argc, argv, 0, NULL);
509 errx(1, "interface %s does not exist", ifname);
512 * Do not allow use `create` command as hostname if
513 * address family is not specified.
515 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
516 strcmp(argv[0], "plumb") == 0)) {
518 errx(1, "interface %s already exists",
525 /* Check for address family */
527 afp = af_getbyname(*argv);
533 * Check for a requested configuration action on a single interface,
534 * which doesn't require building, sorting, and searching the entire
535 * system address list
537 if ((argc > 0) && (ifname != NULL)) {
538 iflen = strlcpy(name, ifname, sizeof(name));
539 if (iflen >= sizeof(name)) {
540 warnx("%s: interface name too long, skipping", ifname);
542 flags = getifflags(name, -1);
543 if (!(((flags & IFF_CANTCONFIG) != 0) ||
544 (downonly && (flags & IFF_UP) != 0) ||
545 (uponly && (flags & IFF_UP) == 0)))
546 ifconfig(argc, argv, 0, afp);
551 if (getifaddrs(&ifap) != 0)
552 err(EXIT_FAILURE, "getifaddrs");
556 if (calcorders(ifap, &q) != 0)
557 err(EXIT_FAILURE, "calcorders");
559 sifap = sortifaddrs(ifap, cmpifaddrs, &q);
561 TAILQ_FOREACH_SAFE(cur, &q, link, tmp)
565 for (ifa = sifap; ifa; ifa = ifa->ifa_next) {
566 memset(&paifr, 0, sizeof(paifr));
567 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));
568 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
569 memcpy(&paifr.ifr_addr, ifa->ifa_addr,
570 ifa->ifa_addr->sa_len);
573 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
575 if (ifa->ifa_addr->sa_family == AF_LINK)
576 sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
579 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly)
581 iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
582 if (iflen >= sizeof(name)) {
583 warnx("%s: interface name too long, skipping",
589 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0)
591 if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
593 if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
596 * Are we just listing the interfaces?
602 /* special case for "ether" address family */
603 if (!strcmp(afp->af_name, "ether")) {
605 (sdl->sdl_type != IFT_ETHER &&
606 sdl->sdl_type != IFT_L2VLAN &&
607 sdl->sdl_type != IFT_BRIDGE) ||
608 sdl->sdl_alen != ETHER_ADDR_LEN)
611 if (ifa->ifa_addr->sa_family
626 ifconfig(argc, argv, 0, afp);
628 status(afp, sdl, ifa);
639 static struct afswtch *afs = NULL;
642 af_register(struct afswtch *p)
648 static struct afswtch *
649 af_getbyname(const char *name)
653 for (afp = afs; afp != NULL; afp = afp->af_next)
654 if (strcmp(afp->af_name, name) == 0)
659 static struct afswtch *
660 af_getbyfamily(int af)
664 for (afp = afs; afp != NULL; afp = afp->af_next)
665 if (afp->af_af == af)
671 af_other_status(int s)
674 uint8_t afmask[howmany(AF_MAX, NBBY)];
676 memset(afmask, 0, sizeof(afmask));
677 for (afp = afs; afp != NULL; afp = afp->af_next) {
678 if (afp->af_other_status == NULL)
680 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
682 afp->af_other_status(s);
683 setbit(afmask, afp->af_af);
688 af_all_tunnel_status(int s)
691 uint8_t afmask[howmany(AF_MAX, NBBY)];
693 memset(afmask, 0, sizeof(afmask));
694 for (afp = afs; afp != NULL; afp = afp->af_next) {
695 if (afp->af_status_tunnel == NULL)
697 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
699 afp->af_status_tunnel(s);
700 setbit(afmask, afp->af_af);
704 static struct cmd *cmds = NULL;
707 cmd_register(struct cmd *p)
713 static const struct cmd *
714 cmd_lookup(const char *name, int iscreate)
718 for (p = cmds; p != NULL; p = p->c_next)
719 if (strcmp(name, p->c_name) == 0) {
732 callback_func *cb_func;
734 struct callback *cb_next;
736 static struct callback *callbacks = NULL;
739 callback_register(callback_func *func, void *arg)
743 cb = malloc(sizeof(struct callback));
745 errx(1, "unable to allocate memory for callback");
748 cb->cb_next = callbacks;
752 /* specially-handled commands */
753 static void setifaddr(const char *, int, int, const struct afswtch *);
754 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr);
756 static void setifdstaddr(const char *, int, int, const struct afswtch *);
757 static const struct cmd setifdstaddr_cmd =
758 DEF_CMD("ifdstaddr", 0, setifdstaddr);
761 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp)
763 const struct afswtch *afp, *nafp;
768 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
773 * This is the historical "accident" allowing users to configure IPv4
774 * addresses without the "inet" keyword which while a nice feature has
775 * proven to complicate other things. We cannot remove this but only
776 * make sure we will never have a similar implicit default for IPv6 or
777 * any other address familiy. We need a fallback though for
778 * ifconfig IF up/down etc. to work without INET support as people
779 * never used ifconfig IF link up/down, etc. either.
783 if (afp == NULL && feature_present("inet"))
784 afp = af_getbyname("inet");
788 afp = af_getbyname("link");
790 warnx("Please specify an address_family.");
794 ifr.ifr_addr.sa_family =
795 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ?
796 AF_LOCAL : afp->af_af;
798 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 &&
799 (uafp != NULL || errno != EAFNOSUPPORT ||
800 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0))
801 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
804 p = cmd_lookup(*argv, iscreate);
805 if (iscreate && p == NULL) {
807 * Push the clone create callback so the new
808 * device is created and can be used for any
809 * remaining arguments.
813 errx(1, "internal error, no callback");
814 callbacks = cb->cb_next;
815 cb->cb_func(s, cb->cb_arg);
818 * Handle any address family spec that
819 * immediately follows and potentially
820 * recreate the socket.
822 nafp = af_getbyname(*argv);
832 * Look for a normal parameter.
838 * Not a recognized command, choose between setting
839 * the interface address and the dst address.
841 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd);
843 if (p->c_parameter == NEXTARG && p->c_u.c_func) {
845 errx(1, "'%s' requires argument",
847 p->c_u.c_func(argv[1], 0, s, afp);
849 } else if (p->c_parameter == OPTARG && p->c_u.c_func) {
850 p->c_u.c_func(argv[1], 0, s, afp);
853 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) {
855 errx(1, "'%s' requires 2 arguments",
857 p->c_u.c_func2(argv[1], argv[2], s, afp);
858 argc -= 2, argv += 2;
859 } else if (p->c_u.c_func)
860 p->c_u.c_func(*argv, p->c_parameter, s, afp);
865 * Do any post argument processing required by the address family.
867 if (afp->af_postproc != NULL)
868 afp->af_postproc(s, afp);
870 * Do deferred callbacks registered while processing
871 * command-line arguments.
873 for (cb = callbacks; cb != NULL; cb = cb->cb_next)
874 cb->cb_func(s, cb->cb_arg);
876 * Do deferred operations.
879 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
880 warnx("interface %s cannot change %s addresses!",
887 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name,
888 sizeof ifr.ifr_name);
889 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq);
891 if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
892 /* means no previous address for interface */
894 Perror("ioctl (SIOCDIFADDR)");
898 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
899 warnx("interface %s cannot change %s addresses!",
904 if (newaddr && (setaddr || setmask)) {
905 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name,
906 sizeof ifr.ifr_name);
907 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0)
908 Perror("ioctl (SIOCAIFADDR)");
917 setifaddr(const char *addr, int param, int s, const struct afswtch *afp)
919 if (afp->af_getaddr == NULL)
922 * Delay the ioctl to set the interface addr until flags are all set.
923 * The address interpretation may depend on the flags,
924 * and the flags may change when the address is set.
927 if (doalias == 0 && afp->af_af != AF_LINK)
929 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR));
933 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp)
935 struct addrinfo *srcres, *dstres;
938 if (afp->af_settunnel == NULL) {
939 warn("address family %s does not support tunnel setup",
944 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0)
945 errx(1, "error in parsing address string: %s",
946 gai_strerror(ecode));
948 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0)
949 errx(1, "error in parsing address string: %s",
950 gai_strerror(ecode));
952 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family)
954 "source and destination address families do not match");
956 afp->af_settunnel(s, srcres, dstres);
958 freeaddrinfo(srcres);
959 freeaddrinfo(dstres);
964 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp)
967 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0)
968 err(1, "SIOCDIFPHYADDR");
973 setifvnet(const char *jname, int dummy __unused, int s,
974 const struct afswtch *afp)
978 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
979 my_ifr.ifr_jid = jail_getid(jname);
980 if (my_ifr.ifr_jid < 0)
981 errx(1, "%s", jail_errmsg);
982 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0)
983 err(1, "SIOCSIFVNET");
987 setifrvnet(const char *jname, int dummy __unused, int s,
988 const struct afswtch *afp)
992 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
993 my_ifr.ifr_jid = jail_getid(jname);
994 if (my_ifr.ifr_jid < 0)
995 errx(1, "%s", jail_errmsg);
996 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0)
997 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name);
1002 setifnetmask(const char *addr, int dummy __unused, int s,
1003 const struct afswtch *afp)
1005 if (afp->af_getaddr != NULL) {
1007 afp->af_getaddr(addr, MASK);
1012 setifbroadaddr(const char *addr, int dummy __unused, int s,
1013 const struct afswtch *afp)
1015 if (afp->af_getaddr != NULL)
1016 afp->af_getaddr(addr, DSTADDR);
1020 notealias(const char *addr, int param, int s, const struct afswtch *afp)
1022 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
1023 if (setaddr && doalias == 0 && param < 0)
1024 if (afp->af_addreq != NULL && afp->af_ridreq != NULL)
1025 bcopy((caddr_t)rqtosa(af_addreq),
1026 (caddr_t)rqtosa(af_ridreq),
1027 rqtosa(af_addreq)->sa_len);
1039 setifdstaddr(const char *addr, int param __unused, int s,
1040 const struct afswtch *afp)
1042 if (afp->af_getaddr != NULL)
1043 afp->af_getaddr(addr, DSTADDR);
1047 getifflags(const char *ifname, int us)
1049 struct ifreq my_ifr;
1052 memset(&my_ifr, 0, sizeof(my_ifr));
1053 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name));
1055 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)
1056 err(1, "socket(family AF_LOCAL,SOCK_DGRAM");
1059 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) {
1060 Perror("ioctl (SIOCGIFFLAGS)");
1065 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16));
1069 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion
1070 * of the ifreq structure, which may confuse other parts of ifconfig.
1071 * Make a private copy so we can avoid that.
1074 setifflags(const char *vname, int value, int s, const struct afswtch *afp)
1076 struct ifreq my_ifr;
1079 flags = getifflags(name, s);
1085 memset(&my_ifr, 0, sizeof(my_ifr));
1086 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name));
1087 my_ifr.ifr_flags = flags & 0xffff;
1088 my_ifr.ifr_flagshigh = flags >> 16;
1089 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)
1094 setifcap(const char *vname, int value, int s, const struct afswtch *afp)
1098 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) {
1099 Perror("ioctl (SIOCGIFCAP)");
1102 flags = ifr.ifr_curcap;
1108 flags &= ifr.ifr_reqcap;
1109 ifr.ifr_reqcap = flags;
1110 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0)
1115 setifmetric(const char *val, int dummy __unused, int s,
1116 const struct afswtch *afp)
1118 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1119 ifr.ifr_metric = atoi(val);
1120 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
1121 err(1, "ioctl SIOCSIFMETRIC (set metric)");
1125 setifmtu(const char *val, int dummy __unused, int s,
1126 const struct afswtch *afp)
1128 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1129 ifr.ifr_mtu = atoi(val);
1130 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
1131 err(1, "ioctl SIOCSIFMTU (set mtu)");
1135 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp)
1140 ul = strtoul(val, &endp, 0);
1142 errx(1, "invalid value for pcp");
1144 errx(1, "value for pcp out of range");
1145 ifr.ifr_lan_pcp = ul;
1146 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1147 err(1, "SIOCSLANPCP");
1151 disableifpcp(const char *val, int arg __unused, int s,
1152 const struct afswtch *afp)
1155 ifr.ifr_lan_pcp = IFNET_PCP_NONE;
1156 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1157 err(1, "SIOCSLANPCP");
1161 setifname(const char *val, int dummy __unused, int s,
1162 const struct afswtch *afp)
1166 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1168 newname = strdup(val);
1169 if (newname == NULL)
1170 err(1, "no memory to set ifname");
1171 ifr.ifr_data = newname;
1172 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) {
1174 err(1, "ioctl SIOCSIFNAME (set name)");
1177 strlcpy(name, newname, sizeof(name));
1183 setifdescr(const char *val, int dummy __unused, int s,
1184 const struct afswtch *afp)
1188 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1190 ifr.ifr_buffer.length = strlen(val) + 1;
1191 if (ifr.ifr_buffer.length == 1) {
1192 ifr.ifr_buffer.buffer = newdescr = NULL;
1193 ifr.ifr_buffer.length = 0;
1195 newdescr = strdup(val);
1196 ifr.ifr_buffer.buffer = newdescr;
1197 if (newdescr == NULL) {
1198 warn("no memory to set ifdescr");
1203 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0)
1204 err(1, "ioctl SIOCSIFDESCR (set descr)");
1211 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp)
1214 setifdescr("", 0, s, 0);
1218 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \
1219 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
1220 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP"
1223 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
1224 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \
1225 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \
1226 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP"
1229 * Print the status of the interface. If an address family was
1230 * specified, show only it; otherwise, show them all.
1233 status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
1234 struct ifaddrs *ifa)
1236 struct ifaddrs *ift;
1242 ifr.ifr_addr.sa_family = AF_LOCAL;
1245 ifr.ifr_addr.sa_family =
1246 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af;
1248 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1250 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
1252 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
1254 printf("%s: ", name);
1255 printb("flags", ifa->ifa_flags, IFFBITS);
1256 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1)
1257 printf(" metric %d", ifr.ifr_metric);
1258 if (ioctl(s, SIOCGIFMTU, &ifr) != -1)
1259 printf(" mtu %d", ifr.ifr_mtu);
1263 if ((descr = reallocf(descr, descrlen)) != NULL) {
1264 ifr.ifr_buffer.buffer = descr;
1265 ifr.ifr_buffer.length = descrlen;
1266 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) {
1267 if (ifr.ifr_buffer.buffer == descr) {
1268 if (strlen(descr) > 0)
1269 printf("\tdescription: %s\n",
1271 } else if (ifr.ifr_buffer.length > descrlen) {
1272 descrlen = ifr.ifr_buffer.length;
1277 warn("unable to allocate memory for interface"
1282 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) {
1283 if (ifr.ifr_curcap != 0) {
1284 printb("\toptions", ifr.ifr_curcap, IFCAPBITS);
1287 if (supmedia && ifr.ifr_reqcap != 0) {
1288 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS);
1295 for (ift = ifa; ift != NULL; ift = ift->ifa_next) {
1296 if (ift->ifa_addr == NULL)
1298 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0)
1301 const struct afswtch *p;
1302 p = af_getbyfamily(ift->ifa_addr->sa_family);
1303 if (p != NULL && p->af_status != NULL)
1304 p->af_status(s, ift);
1305 } else if (afp->af_af == ift->ifa_addr->sa_family)
1306 afp->af_status(s, ift);
1309 if (allfamilies || afp->af_af == AF_LINK) {
1310 const struct afswtch *lafp;
1313 * Hack; the link level address is received separately
1314 * from the routing information so any address is not
1315 * handled above. Cobble together an entry and invoke
1316 * the status method specially.
1318 lafp = af_getbyname("lladdr");
1320 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl;
1321 lafp->af_status(s, &info);
1327 else if (afp->af_other_status != NULL)
1328 afp->af_other_status(s);
1330 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
1331 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
1332 printf("%s", ifs.ascii);
1335 sfp_status(s, &ifr, verbose);
1342 tunnel_status(int s)
1344 af_all_tunnel_status(s);
1348 Perror(const char *cmd)
1353 errx(1, "%s: no such interface", cmd);
1357 errx(1, "%s: permission denied", cmd);
1366 * Print a value a la the %b format of the kernel's printf
1369 printb(const char *s, unsigned v, const char *bits)
1374 if (bits && *bits == 8)
1375 printf("%s=%o", s, v);
1377 printf("%s=%x", s, v);
1381 while ((i = *bits++) != '\0') {
1382 if (v & (1 << (i-1))) {
1386 for (; (c = *bits) > 32; bits++)
1389 for (; *bits > 32; bits++)
1397 print_vhid(const struct ifaddrs *ifa, const char *s)
1399 struct if_data *ifd;
1401 if (ifa->ifa_data == NULL)
1404 ifd = ifa->ifa_data;
1405 if (ifd->ifi_vhid == 0)
1408 printf(" vhid %d", ifd->ifi_vhid);
1412 ifmaybeload(const char *name)
1414 #define MOD_PREFIX_LEN 3 /* "if_" */
1415 struct module_stat mstat;
1417 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp;
1420 /* loading suppressed by the user */
1424 /* trim the interface number off the end */
1425 strlcpy(ifname, name, sizeof(ifname));
1426 for (dp = ifname; *dp != 0; dp++)
1432 /* turn interface and unit into module name */
1433 strlcpy(ifkind, "if_", sizeof(ifkind));
1434 strlcat(ifkind, ifname, sizeof(ifkind));
1436 /* scan files in kernel */
1437 mstat.version = sizeof(struct module_stat);
1438 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
1439 /* scan modules in file */
1440 for (modid = kldfirstmod(fileid); modid > 0;
1441 modid = modfnext(modid)) {
1442 if (modstat(modid, &mstat) < 0)
1444 /* strip bus name if present */
1445 if ((cp = strchr(mstat.name, '/')) != NULL) {
1450 /* already loaded? */
1451 if (strcmp(ifname, cp) == 0 ||
1452 strcmp(ifkind, cp) == 0)
1458 * Try to load the module. But ignore failures, because ifconfig can't
1459 * infer the names of all drivers (eg mlx4en(4)).
1461 (void) kldload(ifkind);
1464 static struct cmd basic_cmds[] = {
1465 DEF_CMD("up", IFF_UP, setifflags),
1466 DEF_CMD("down", -IFF_UP, setifflags),
1467 DEF_CMD("arp", -IFF_NOARP, setifflags),
1468 DEF_CMD("-arp", IFF_NOARP, setifflags),
1469 DEF_CMD("debug", IFF_DEBUG, setifflags),
1470 DEF_CMD("-debug", -IFF_DEBUG, setifflags),
1471 DEF_CMD_ARG("description", setifdescr),
1472 DEF_CMD_ARG("descr", setifdescr),
1473 DEF_CMD("-description", 0, unsetifdescr),
1474 DEF_CMD("-descr", 0, unsetifdescr),
1475 DEF_CMD("promisc", IFF_PPROMISC, setifflags),
1476 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags),
1477 DEF_CMD("add", IFF_UP, notealias),
1478 DEF_CMD("alias", IFF_UP, notealias),
1479 DEF_CMD("-alias", -IFF_UP, notealias),
1480 DEF_CMD("delete", -IFF_UP, notealias),
1481 DEF_CMD("remove", -IFF_UP, notealias),
1483 #define EN_SWABIPS 0x1000
1484 DEF_CMD("swabips", EN_SWABIPS, setifflags),
1485 DEF_CMD("-swabips", -EN_SWABIPS, setifflags),
1487 DEF_CMD_ARG("netmask", setifnetmask),
1488 DEF_CMD_ARG("metric", setifmetric),
1489 DEF_CMD_ARG("broadcast", setifbroadaddr),
1490 DEF_CMD_ARG2("tunnel", settunnel),
1491 DEF_CMD("-tunnel", 0, deletetunnel),
1492 DEF_CMD("deletetunnel", 0, deletetunnel),
1494 DEF_CMD_ARG("vnet", setifvnet),
1495 DEF_CMD_ARG("-vnet", setifrvnet),
1497 DEF_CMD("link0", IFF_LINK0, setifflags),
1498 DEF_CMD("-link0", -IFF_LINK0, setifflags),
1499 DEF_CMD("link1", IFF_LINK1, setifflags),
1500 DEF_CMD("-link1", -IFF_LINK1, setifflags),
1501 DEF_CMD("link2", IFF_LINK2, setifflags),
1502 DEF_CMD("-link2", -IFF_LINK2, setifflags),
1503 DEF_CMD("monitor", IFF_MONITOR, setifflags),
1504 DEF_CMD("-monitor", -IFF_MONITOR, setifflags),
1505 DEF_CMD("staticarp", IFF_STATICARP, setifflags),
1506 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags),
1507 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap),
1508 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap),
1509 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap),
1510 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap),
1511 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap),
1512 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap),
1513 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap),
1514 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap),
1515 DEF_CMD("netcons", IFCAP_NETCONS, setifcap),
1516 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap),
1517 DEF_CMD_ARG("pcp", setifpcp),
1518 DEF_CMD("-pcp", 0, disableifpcp),
1519 DEF_CMD("polling", IFCAP_POLLING, setifcap),
1520 DEF_CMD("-polling", -IFCAP_POLLING, setifcap),
1521 DEF_CMD("tso6", IFCAP_TSO6, setifcap),
1522 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap),
1523 DEF_CMD("tso4", IFCAP_TSO4, setifcap),
1524 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap),
1525 DEF_CMD("tso", IFCAP_TSO, setifcap),
1526 DEF_CMD("-tso", -IFCAP_TSO, setifcap),
1527 DEF_CMD("toe", IFCAP_TOE, setifcap),
1528 DEF_CMD("-toe", -IFCAP_TOE, setifcap),
1529 DEF_CMD("lro", IFCAP_LRO, setifcap),
1530 DEF_CMD("-lro", -IFCAP_LRO, setifcap),
1531 DEF_CMD("wol", IFCAP_WOL, setifcap),
1532 DEF_CMD("-wol", -IFCAP_WOL, setifcap),
1533 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap),
1534 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap),
1535 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap),
1536 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap),
1537 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap),
1538 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap),
1539 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap),
1540 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap),
1541 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap),
1542 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap),
1543 DEF_CMD("normal", -IFF_LINK0, setifflags),
1544 DEF_CMD("compress", IFF_LINK0, setifflags),
1545 DEF_CMD("noicmp", IFF_LINK1, setifflags),
1546 DEF_CMD_ARG("mtu", setifmtu),
1547 DEF_CMD_ARG("name", setifname),
1550 static __constructor void
1555 for (i = 0; i < nitems(basic_cmds); i++)
1556 cmd_register(&basic_cmds[i]);