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>
83 * Since "struct ifreq" is composed of various union members, callers
84 * should pay special attention to interpret the value.
85 * (.e.g. little/big endian difference in the structure.)
102 int printkeys = 0; /* Print keying material for interfaces. */
105 /* Formatter Strings */
106 char *f_inet, *f_inet6, *f_ether, *f_addr;
108 static int ifconfig(int argc, char *const *argv, int iscreate,
109 const struct afswtch *afp);
110 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
111 struct ifaddrs *ifa);
112 static void tunnel_status(int s);
113 static _Noreturn void usage(void);
115 static int getifflags(const char *ifname, int us);
117 static struct afswtch *af_getbyname(const char *name);
118 static struct afswtch *af_getbyfamily(int af);
119 static void af_other_status(int);
121 void printifnamemaybe(void);
123 static struct option *opts = NULL;
125 struct ifa_order_elt {
129 TAILQ_ENTRY(ifa_order_elt) link;
132 TAILQ_HEAD(ifa_queue, ifa_order_elt);
134 static struct module_map_entry {
148 * This mapping exists because there is a conflicting enc module
149 * in CAM. ifconfig's guessing behavior will attempt to match
150 * the ifname to a module as well as if_${ifname} and clash with
151 * CAM enc. This is an assertion of the correct module to load.
160 opt_register(struct option *p)
172 /* XXX not right but close enough for now */
174 for (p = opts; p != NULL; p = p->next) {
175 strlcat(options, p->opt_usage, sizeof(options));
176 strlcat(options, " ", sizeof(options));
180 "usage: ifconfig [-f type:format] %sinterface address_family\n"
181 " [address [dest_address]] [parameters]\n"
182 " ifconfig interface create\n"
183 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n"
184 " ifconfig -l [-d] [-u] [address_family]\n"
185 " ifconfig %s[-d] [-m] [-u] [-v]\n",
186 options, options, options);
190 #define ORDERS_SIZE(x) sizeof(x) / sizeof(x[0])
193 calcorders(struct ifaddrs *ifa, struct ifa_queue *q)
195 struct ifaddrs *prev;
196 struct ifa_order_elt *cur;
197 unsigned int ord, af, ifa_ord;
204 while (ifa != NULL) {
206 strcmp(ifa->ifa_name, prev->ifa_name) != 0) {
207 cur = calloc(1, sizeof(*cur));
212 TAILQ_INSERT_TAIL(q, cur, link);
213 cur->if_order = ifa_ord ++;
219 af = ifa->ifa_addr->sa_family;
221 if (af < ORDERS_SIZE(cur->af_orders) &&
222 cur->af_orders[af] == 0)
223 cur->af_orders[af] = ++ord;
233 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q)
235 struct ifa_order_elt *cur, *e1, *e2;
236 unsigned int af1, af2;
241 ret = strcmp(a->ifa_name, b->ifa_name);
243 TAILQ_FOREACH(cur, q, link) {
247 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0)
249 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0)
256 return (e1->if_order - e2->if_order);
258 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) {
259 TAILQ_FOREACH(cur, q, link) {
260 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) {
269 af1 = a->ifa_addr->sa_family;
270 af2 = b->ifa_addr->sa_family;
272 if (af1 < ORDERS_SIZE(e1->af_orders) &&
273 af2 < ORDERS_SIZE(e1->af_orders))
274 return (e1->af_orders[af1] - e1->af_orders[af2]);
280 static void freeformat(void)
293 static void setformat(char *input)
295 char *formatstr, *category, *modifier;
297 formatstr = strdup(input);
298 while ((category = strsep(&formatstr, ",")) != NULL) {
299 modifier = strchr(category, ':');
300 if (modifier == NULL || modifier[1] == '\0') {
301 warnx("Skipping invalid format specification: %s\n",
306 /* Split the string on the separator, then seek past it */
310 if (strcmp(category, "addr") == 0)
311 f_addr = strdup(modifier);
312 else if (strcmp(category, "ether") == 0)
313 f_ether = strdup(modifier);
314 else if (strcmp(category, "inet") == 0)
315 f_inet = strdup(modifier);
316 else if (strcmp(category, "inet6") == 0)
317 f_inet6 = strdup(modifier);
324 static struct ifaddrs *
325 sortifaddrs(struct ifaddrs *list,
326 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *),
329 struct ifaddrs *right, *temp, *last, *result, *next, *tail;
338 if (!list || !list->ifa_next)
341 while (temp && temp->ifa_next) {
343 right = right->ifa_next;
344 temp = temp->ifa_next->ifa_next;
347 last->ifa_next = NULL;
349 list = sortifaddrs(list, compare, q);
350 right = sortifaddrs(right, compare, q);
352 while (list || right) {
356 list = list->ifa_next;
359 right = right->ifa_next;
360 } else if (compare(list, right, q) <= 0) {
362 list = list->ifa_next;
365 right = right->ifa_next;
371 tail->ifa_next = next;
379 void printifnamemaybe()
382 printf("%s\n", name);
386 main(int argc, char *argv[])
388 int c, all, namesonly, downonly, uponly;
389 const struct afswtch *afp = NULL;
391 struct ifaddrs *ifap, *sifap, *ifa;
393 const struct sockaddr_dl *sdl;
394 char options[1024], *cp, *envformat, *namecp = NULL;
395 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q);
396 struct ifa_order_elt *cur, *tmp;
402 all = downonly = uponly = namesonly = noload = verbose = 0;
403 f_inet = f_inet6 = f_ether = f_addr = NULL;
405 envformat = getenv("IFCONFIG_FORMAT");
406 if (envformat != NULL)
407 setformat(envformat);
410 * Ensure we print interface name when expected to,
411 * even if we terminate early due to error.
413 atexit(printifnamemaybe);
415 /* Parse leading line options */
416 strlcpy(options, "f:adklmnuv", sizeof(options));
417 for (p = opts; p != NULL; p = p->next)
418 strlcat(options, p->opt, sizeof(options));
419 while ((c = getopt(argc, argv, options)) != -1) {
421 case 'a': /* scan all interfaces */
424 case 'd': /* restrict scan to "down" interfaces */
435 case 'l': /* scan interface names only */
438 case 'm': /* show media choices in status */
441 case 'n': /* suppress module loading */
444 case 'u': /* restrict scan to "up" interfaces */
451 for (p = opts; p != NULL; p = p->next)
452 if (p->opt[0] == c) {
464 /* -l cannot be used with -a or -m */
465 if (namesonly && (all || supmedia))
469 if (uponly && downonly)
472 /* no arguments is equivalent to '-a' */
473 if (!namesonly && argc < 1)
476 /* -a and -l allow an address family arg to limit the output */
477 if (all || namesonly) {
484 afp = af_getbyname(*argv);
486 warnx("Address family '%s' unknown.", *argv);
489 if (afp->af_name != NULL)
491 /* leave with afp non-zero */
494 /* not listing, need an argument */
501 /* check and maybe load support for this interface */
504 ifindex = if_nametoindex(ifname);
507 * NOTE: We must special-case the `create' command
508 * right here as we would otherwise fail when trying
509 * to find the interface.
511 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
512 strcmp(argv[0], "plumb") == 0)) {
513 iflen = strlcpy(name, ifname, sizeof(name));
514 if (iflen >= sizeof(name))
515 errx(1, "%s: cloning name too long",
517 ifconfig(argc, argv, 1, NULL);
522 * NOTE: We have to special-case the `-vnet' command
523 * right here as we would otherwise fail when trying
524 * to find the interface as it lives in another vnet.
526 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) {
527 iflen = strlcpy(name, ifname, sizeof(name));
528 if (iflen >= sizeof(name))
529 errx(1, "%s: interface name too long",
531 ifconfig(argc, argv, 0, NULL);
535 errx(1, "interface %s does not exist", ifname);
538 * Do not allow use `create` command as hostname if
539 * address family is not specified.
541 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
542 strcmp(argv[0], "plumb") == 0)) {
544 errx(1, "interface %s already exists",
551 /* Check for address family */
553 afp = af_getbyname(*argv);
559 * Check for a requested configuration action on a single interface,
560 * which doesn't require building, sorting, and searching the entire
561 * system address list
563 if ((argc > 0) && (ifname != NULL)) {
564 iflen = strlcpy(name, ifname, sizeof(name));
565 if (iflen >= sizeof(name)) {
566 warnx("%s: interface name too long, skipping", ifname);
568 flags = getifflags(name, -1);
569 if (!(((flags & IFF_CANTCONFIG) != 0) ||
570 (downonly && (flags & IFF_UP) != 0) ||
571 (uponly && (flags & IFF_UP) == 0)))
572 ifconfig(argc, argv, 0, afp);
577 if (getifaddrs(&ifap) != 0)
578 err(EXIT_FAILURE, "getifaddrs");
582 if (calcorders(ifap, &q) != 0)
583 err(EXIT_FAILURE, "calcorders");
585 sifap = sortifaddrs(ifap, cmpifaddrs, &q);
587 TAILQ_FOREACH_SAFE(cur, &q, link, tmp)
591 for (ifa = sifap; ifa; ifa = ifa->ifa_next) {
592 memset(&paifr, 0, sizeof(paifr));
593 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));
594 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
595 memcpy(&paifr.ifr_addr, ifa->ifa_addr,
596 ifa->ifa_addr->sa_len);
599 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
601 if (ifa->ifa_addr->sa_family == AF_LINK)
602 sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
605 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly)
607 iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
608 if (iflen >= sizeof(name)) {
609 warnx("%s: interface name too long, skipping",
615 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0)
617 if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
619 if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
622 * Are we just listing the interfaces?
628 /* special case for "ether" address family */
629 if (!strcmp(afp->af_name, "ether")) {
631 (sdl->sdl_type != IFT_ETHER &&
632 sdl->sdl_type != IFT_L2VLAN &&
633 sdl->sdl_type != IFT_BRIDGE) ||
634 sdl->sdl_alen != ETHER_ADDR_LEN)
637 if (ifa->ifa_addr->sa_family
652 ifconfig(argc, argv, 0, afp);
654 status(afp, sdl, ifa);
665 static struct afswtch *afs = NULL;
668 af_register(struct afswtch *p)
674 static struct afswtch *
675 af_getbyname(const char *name)
679 for (afp = afs; afp != NULL; afp = afp->af_next)
680 if (strcmp(afp->af_name, name) == 0)
685 static struct afswtch *
686 af_getbyfamily(int af)
690 for (afp = afs; afp != NULL; afp = afp->af_next)
691 if (afp->af_af == af)
697 af_other_status(int s)
700 uint8_t afmask[howmany(AF_MAX, NBBY)];
702 memset(afmask, 0, sizeof(afmask));
703 for (afp = afs; afp != NULL; afp = afp->af_next) {
704 if (afp->af_other_status == NULL)
706 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
708 afp->af_other_status(s);
709 setbit(afmask, afp->af_af);
714 af_all_tunnel_status(int s)
717 uint8_t afmask[howmany(AF_MAX, NBBY)];
719 memset(afmask, 0, sizeof(afmask));
720 for (afp = afs; afp != NULL; afp = afp->af_next) {
721 if (afp->af_status_tunnel == NULL)
723 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
725 afp->af_status_tunnel(s);
726 setbit(afmask, afp->af_af);
730 static struct cmd *cmds = NULL;
733 cmd_register(struct cmd *p)
739 static const struct cmd *
740 cmd_lookup(const char *name, int iscreate)
744 for (p = cmds; p != NULL; p = p->c_next)
745 if (strcmp(name, p->c_name) == 0) {
758 callback_func *cb_func;
760 struct callback *cb_next;
762 static struct callback *callbacks = NULL;
765 callback_register(callback_func *func, void *arg)
769 cb = malloc(sizeof(struct callback));
771 errx(1, "unable to allocate memory for callback");
774 cb->cb_next = callbacks;
778 /* specially-handled commands */
779 static void setifaddr(const char *, int, int, const struct afswtch *);
780 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr);
782 static void setifdstaddr(const char *, int, int, const struct afswtch *);
783 static const struct cmd setifdstaddr_cmd =
784 DEF_CMD("ifdstaddr", 0, setifdstaddr);
787 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp)
789 const struct afswtch *afp, *nafp;
794 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
799 * This is the historical "accident" allowing users to configure IPv4
800 * addresses without the "inet" keyword which while a nice feature has
801 * proven to complicate other things. We cannot remove this but only
802 * make sure we will never have a similar implicit default for IPv6 or
803 * any other address familiy. We need a fallback though for
804 * ifconfig IF up/down etc. to work without INET support as people
805 * never used ifconfig IF link up/down, etc. either.
809 if (afp == NULL && feature_present("inet"))
810 afp = af_getbyname("inet");
814 afp = af_getbyname("link");
816 warnx("Please specify an address_family.");
820 ifr.ifr_addr.sa_family =
821 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ?
822 AF_LOCAL : afp->af_af;
824 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 &&
825 (uafp != NULL || errno != EAFNOSUPPORT ||
826 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0))
827 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
830 p = cmd_lookup(*argv, iscreate);
831 if (iscreate && p == NULL) {
833 * Push the clone create callback so the new
834 * device is created and can be used for any
835 * remaining arguments.
839 errx(1, "internal error, no callback");
840 callbacks = cb->cb_next;
841 cb->cb_func(s, cb->cb_arg);
844 * Handle any address family spec that
845 * immediately follows and potentially
846 * recreate the socket.
848 nafp = af_getbyname(*argv);
858 * Look for a normal parameter.
864 * Not a recognized command, choose between setting
865 * the interface address and the dst address.
867 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd);
869 if (p->c_parameter == NEXTARG && p->c_u.c_func) {
871 errx(1, "'%s' requires argument",
873 p->c_u.c_func(argv[1], 0, s, afp);
875 } else if (p->c_parameter == OPTARG && p->c_u.c_func) {
876 p->c_u.c_func(argv[1], 0, s, afp);
879 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) {
881 errx(1, "'%s' requires 2 arguments",
883 p->c_u.c_func2(argv[1], argv[2], s, afp);
884 argc -= 2, argv += 2;
885 } else if (p->c_u.c_func)
886 p->c_u.c_func(*argv, p->c_parameter, s, afp);
891 * Do any post argument processing required by the address family.
893 if (afp->af_postproc != NULL)
894 afp->af_postproc(s, afp);
896 * Do deferred callbacks registered while processing
897 * command-line arguments.
899 for (cb = callbacks; cb != NULL; cb = cb->cb_next)
900 cb->cb_func(s, cb->cb_arg);
902 * Do deferred operations.
905 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
906 warnx("interface %s cannot change %s addresses!",
913 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name,
914 sizeof ifr.ifr_name);
915 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq);
917 if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
918 /* means no previous address for interface */
920 Perror("ioctl (SIOCDIFADDR)");
924 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
925 warnx("interface %s cannot change %s addresses!",
930 if (newaddr && (setaddr || setmask)) {
931 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name,
932 sizeof ifr.ifr_name);
933 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0)
934 Perror("ioctl (SIOCAIFADDR)");
943 setifaddr(const char *addr, int param, int s, const struct afswtch *afp)
945 if (afp->af_getaddr == NULL)
948 * Delay the ioctl to set the interface addr until flags are all set.
949 * The address interpretation may depend on the flags,
950 * and the flags may change when the address is set.
953 if (doalias == 0 && afp->af_af != AF_LINK)
955 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR));
959 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp)
961 struct addrinfo *srcres, *dstres;
964 if (afp->af_settunnel == NULL) {
965 warn("address family %s does not support tunnel setup",
970 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0)
971 errx(1, "error in parsing address string: %s",
972 gai_strerror(ecode));
974 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0)
975 errx(1, "error in parsing address string: %s",
976 gai_strerror(ecode));
978 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family)
980 "source and destination address families do not match");
982 afp->af_settunnel(s, srcres, dstres);
984 freeaddrinfo(srcres);
985 freeaddrinfo(dstres);
990 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp)
993 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0)
994 err(1, "SIOCDIFPHYADDR");
999 setifvnet(const char *jname, int dummy __unused, int s,
1000 const struct afswtch *afp)
1002 struct ifreq my_ifr;
1004 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
1005 my_ifr.ifr_jid = jail_getid(jname);
1006 if (my_ifr.ifr_jid < 0)
1007 errx(1, "%s", jail_errmsg);
1008 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0)
1009 err(1, "SIOCSIFVNET");
1013 setifrvnet(const char *jname, int dummy __unused, int s,
1014 const struct afswtch *afp)
1016 struct ifreq my_ifr;
1018 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
1019 my_ifr.ifr_jid = jail_getid(jname);
1020 if (my_ifr.ifr_jid < 0)
1021 errx(1, "%s", jail_errmsg);
1022 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0)
1023 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name);
1028 setifnetmask(const char *addr, int dummy __unused, int s,
1029 const struct afswtch *afp)
1031 if (afp->af_getaddr != NULL) {
1033 afp->af_getaddr(addr, MASK);
1038 setifbroadaddr(const char *addr, int dummy __unused, int s,
1039 const struct afswtch *afp)
1041 if (afp->af_getaddr != NULL)
1042 afp->af_getaddr(addr, DSTADDR);
1046 notealias(const char *addr, int param, int s, const struct afswtch *afp)
1048 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
1049 if (setaddr && doalias == 0 && param < 0)
1050 if (afp->af_addreq != NULL && afp->af_ridreq != NULL)
1051 bcopy((caddr_t)rqtosa(af_addreq),
1052 (caddr_t)rqtosa(af_ridreq),
1053 rqtosa(af_addreq)->sa_len);
1065 setifdstaddr(const char *addr, int param __unused, int s,
1066 const struct afswtch *afp)
1068 if (afp->af_getaddr != NULL)
1069 afp->af_getaddr(addr, DSTADDR);
1073 getifflags(const char *ifname, int us)
1075 struct ifreq my_ifr;
1078 memset(&my_ifr, 0, sizeof(my_ifr));
1079 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name));
1081 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)
1082 err(1, "socket(family AF_LOCAL,SOCK_DGRAM");
1085 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) {
1086 Perror("ioctl (SIOCGIFFLAGS)");
1091 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16));
1095 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion
1096 * of the ifreq structure, which may confuse other parts of ifconfig.
1097 * Make a private copy so we can avoid that.
1100 setifflags(const char *vname, int value, int s, const struct afswtch *afp)
1102 struct ifreq my_ifr;
1105 flags = getifflags(name, s);
1111 memset(&my_ifr, 0, sizeof(my_ifr));
1112 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name));
1113 my_ifr.ifr_flags = flags & 0xffff;
1114 my_ifr.ifr_flagshigh = flags >> 16;
1115 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)
1120 setifcap(const char *vname, int value, int s, const struct afswtch *afp)
1124 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) {
1125 Perror("ioctl (SIOCGIFCAP)");
1128 flags = ifr.ifr_curcap;
1134 flags &= ifr.ifr_reqcap;
1135 ifr.ifr_reqcap = flags;
1136 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0)
1141 setifmetric(const char *val, int dummy __unused, int s,
1142 const struct afswtch *afp)
1144 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1145 ifr.ifr_metric = atoi(val);
1146 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
1147 err(1, "ioctl SIOCSIFMETRIC (set metric)");
1151 setifmtu(const char *val, int dummy __unused, int s,
1152 const struct afswtch *afp)
1154 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1155 ifr.ifr_mtu = atoi(val);
1156 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
1157 err(1, "ioctl SIOCSIFMTU (set mtu)");
1161 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp)
1166 ul = strtoul(val, &endp, 0);
1168 errx(1, "invalid value for pcp");
1170 errx(1, "value for pcp out of range");
1171 ifr.ifr_lan_pcp = ul;
1172 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1173 err(1, "SIOCSLANPCP");
1177 disableifpcp(const char *val, int arg __unused, int s,
1178 const struct afswtch *afp)
1181 ifr.ifr_lan_pcp = IFNET_PCP_NONE;
1182 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1183 err(1, "SIOCSLANPCP");
1187 setifname(const char *val, int dummy __unused, int s,
1188 const struct afswtch *afp)
1192 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1194 newname = strdup(val);
1195 if (newname == NULL)
1196 err(1, "no memory to set ifname");
1197 ifr.ifr_data = newname;
1198 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) {
1200 err(1, "ioctl SIOCSIFNAME (set name)");
1203 strlcpy(name, newname, sizeof(name));
1209 setifdescr(const char *val, int dummy __unused, int s,
1210 const struct afswtch *afp)
1214 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1216 ifr.ifr_buffer.length = strlen(val) + 1;
1217 if (ifr.ifr_buffer.length == 1) {
1218 ifr.ifr_buffer.buffer = newdescr = NULL;
1219 ifr.ifr_buffer.length = 0;
1221 newdescr = strdup(val);
1222 ifr.ifr_buffer.buffer = newdescr;
1223 if (newdescr == NULL) {
1224 warn("no memory to set ifdescr");
1229 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0)
1230 err(1, "ioctl SIOCSIFDESCR (set descr)");
1237 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp)
1240 setifdescr("", 0, s, 0);
1244 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \
1245 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
1246 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP"
1249 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
1250 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \
1251 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \
1252 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP"
1255 * Print the status of the interface. If an address family was
1256 * specified, show only it; otherwise, show them all.
1259 status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
1260 struct ifaddrs *ifa)
1262 struct ifaddrs *ift;
1268 ifr.ifr_addr.sa_family = AF_LOCAL;
1271 ifr.ifr_addr.sa_family =
1272 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af;
1274 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1276 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
1278 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
1280 printf("%s: ", name);
1281 printb("flags", ifa->ifa_flags, IFFBITS);
1282 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1)
1283 printf(" metric %d", ifr.ifr_metric);
1284 if (ioctl(s, SIOCGIFMTU, &ifr) != -1)
1285 printf(" mtu %d", ifr.ifr_mtu);
1289 if ((descr = reallocf(descr, descrlen)) != NULL) {
1290 ifr.ifr_buffer.buffer = descr;
1291 ifr.ifr_buffer.length = descrlen;
1292 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) {
1293 if (ifr.ifr_buffer.buffer == descr) {
1294 if (strlen(descr) > 0)
1295 printf("\tdescription: %s\n",
1297 } else if (ifr.ifr_buffer.length > descrlen) {
1298 descrlen = ifr.ifr_buffer.length;
1303 warn("unable to allocate memory for interface"
1308 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) {
1309 if (ifr.ifr_curcap != 0) {
1310 printb("\toptions", ifr.ifr_curcap, IFCAPBITS);
1313 if (supmedia && ifr.ifr_reqcap != 0) {
1314 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS);
1321 for (ift = ifa; ift != NULL; ift = ift->ifa_next) {
1322 if (ift->ifa_addr == NULL)
1324 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0)
1327 const struct afswtch *p;
1328 p = af_getbyfamily(ift->ifa_addr->sa_family);
1329 if (p != NULL && p->af_status != NULL)
1330 p->af_status(s, ift);
1331 } else if (afp->af_af == ift->ifa_addr->sa_family)
1332 afp->af_status(s, ift);
1335 if (allfamilies || afp->af_af == AF_LINK) {
1336 const struct afswtch *lafp;
1339 * Hack; the link level address is received separately
1340 * from the routing information so any address is not
1341 * handled above. Cobble together an entry and invoke
1342 * the status method specially.
1344 lafp = af_getbyname("lladdr");
1346 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl;
1347 lafp->af_status(s, &info);
1353 else if (afp->af_other_status != NULL)
1354 afp->af_other_status(s);
1356 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
1357 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
1358 printf("%s", ifs.ascii);
1361 sfp_status(s, &ifr, verbose);
1368 tunnel_status(int s)
1370 af_all_tunnel_status(s);
1374 Perror(const char *cmd)
1379 errx(1, "%s: no such interface", cmd);
1383 errx(1, "%s: permission denied", cmd);
1392 * Print a value a la the %b format of the kernel's printf
1395 printb(const char *s, unsigned v, const char *bits)
1400 if (bits && *bits == 8)
1401 printf("%s=%o", s, v);
1403 printf("%s=%x", s, v);
1407 while ((i = *bits++) != '\0') {
1408 if (v & (1 << (i-1))) {
1412 for (; (c = *bits) > 32; bits++)
1415 for (; *bits > 32; bits++)
1423 print_vhid(const struct ifaddrs *ifa, const char *s)
1425 struct if_data *ifd;
1427 if (ifa->ifa_data == NULL)
1430 ifd = ifa->ifa_data;
1431 if (ifd->ifi_vhid == 0)
1434 printf(" vhid %d", ifd->ifi_vhid);
1438 ifmaybeload(const char *name)
1440 #define MOD_PREFIX_LEN 3 /* "if_" */
1441 struct module_stat mstat;
1442 int i, fileid, modid;
1443 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp;
1445 struct module_map_entry *mme;
1448 /* loading suppressed by the user */
1452 /* trim the interface number off the end */
1453 strlcpy(ifname, name, sizeof(ifname));
1454 for (dp = ifname; *dp != 0; dp++)
1460 /* Either derive it from the map or guess otherwise */
1463 for (i = 0; i < nitems(module_map); ++i) {
1464 mme = &module_map[i];
1465 if (strcmp(mme->ifname, ifname) == 0) {
1466 strlcpy(ifkind, mme->kldname, sizeof(ifkind));
1472 /* We didn't have an alias for it... we'll guess. */
1474 /* turn interface and unit into module name */
1475 strlcpy(ifkind, "if_", sizeof(ifkind));
1476 strlcat(ifkind, ifname, sizeof(ifkind));
1479 /* scan files in kernel */
1480 mstat.version = sizeof(struct module_stat);
1481 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
1482 /* scan modules in file */
1483 for (modid = kldfirstmod(fileid); modid > 0;
1484 modid = modfnext(modid)) {
1485 if (modstat(modid, &mstat) < 0)
1487 /* strip bus name if present */
1488 if ((cp = strchr(mstat.name, '/')) != NULL) {
1494 * Is it already loaded? Don't compare with ifname if
1495 * we were specifically told which kld to use. Doing
1496 * so could lead to conflicts not trivially solved.
1498 if ((!found && strcmp(ifname, cp) == 0) ||
1499 strcmp(ifkind, cp) == 0)
1505 * Try to load the module. But ignore failures, because ifconfig can't
1506 * infer the names of all drivers (eg mlx4en(4)).
1508 (void) kldload(ifkind);
1511 static struct cmd basic_cmds[] = {
1512 DEF_CMD("up", IFF_UP, setifflags),
1513 DEF_CMD("down", -IFF_UP, setifflags),
1514 DEF_CMD("arp", -IFF_NOARP, setifflags),
1515 DEF_CMD("-arp", IFF_NOARP, setifflags),
1516 DEF_CMD("debug", IFF_DEBUG, setifflags),
1517 DEF_CMD("-debug", -IFF_DEBUG, setifflags),
1518 DEF_CMD_ARG("description", setifdescr),
1519 DEF_CMD_ARG("descr", setifdescr),
1520 DEF_CMD("-description", 0, unsetifdescr),
1521 DEF_CMD("-descr", 0, unsetifdescr),
1522 DEF_CMD("promisc", IFF_PPROMISC, setifflags),
1523 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags),
1524 DEF_CMD("add", IFF_UP, notealias),
1525 DEF_CMD("alias", IFF_UP, notealias),
1526 DEF_CMD("-alias", -IFF_UP, notealias),
1527 DEF_CMD("delete", -IFF_UP, notealias),
1528 DEF_CMD("remove", -IFF_UP, notealias),
1530 #define EN_SWABIPS 0x1000
1531 DEF_CMD("swabips", EN_SWABIPS, setifflags),
1532 DEF_CMD("-swabips", -EN_SWABIPS, setifflags),
1534 DEF_CMD_ARG("netmask", setifnetmask),
1535 DEF_CMD_ARG("metric", setifmetric),
1536 DEF_CMD_ARG("broadcast", setifbroadaddr),
1537 DEF_CMD_ARG2("tunnel", settunnel),
1538 DEF_CMD("-tunnel", 0, deletetunnel),
1539 DEF_CMD("deletetunnel", 0, deletetunnel),
1541 DEF_CMD_ARG("vnet", setifvnet),
1542 DEF_CMD_ARG("-vnet", setifrvnet),
1544 DEF_CMD("link0", IFF_LINK0, setifflags),
1545 DEF_CMD("-link0", -IFF_LINK0, setifflags),
1546 DEF_CMD("link1", IFF_LINK1, setifflags),
1547 DEF_CMD("-link1", -IFF_LINK1, setifflags),
1548 DEF_CMD("link2", IFF_LINK2, setifflags),
1549 DEF_CMD("-link2", -IFF_LINK2, setifflags),
1550 DEF_CMD("monitor", IFF_MONITOR, setifflags),
1551 DEF_CMD("-monitor", -IFF_MONITOR, setifflags),
1552 DEF_CMD("staticarp", IFF_STATICARP, setifflags),
1553 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags),
1554 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap),
1555 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap),
1556 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap),
1557 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap),
1558 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap),
1559 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap),
1560 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap),
1561 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap),
1562 DEF_CMD("netcons", IFCAP_NETCONS, setifcap),
1563 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap),
1564 DEF_CMD_ARG("pcp", setifpcp),
1565 DEF_CMD("-pcp", 0, disableifpcp),
1566 DEF_CMD("polling", IFCAP_POLLING, setifcap),
1567 DEF_CMD("-polling", -IFCAP_POLLING, setifcap),
1568 DEF_CMD("tso6", IFCAP_TSO6, setifcap),
1569 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap),
1570 DEF_CMD("tso4", IFCAP_TSO4, setifcap),
1571 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap),
1572 DEF_CMD("tso", IFCAP_TSO, setifcap),
1573 DEF_CMD("-tso", -IFCAP_TSO, setifcap),
1574 DEF_CMD("toe", IFCAP_TOE, setifcap),
1575 DEF_CMD("-toe", -IFCAP_TOE, setifcap),
1576 DEF_CMD("lro", IFCAP_LRO, setifcap),
1577 DEF_CMD("-lro", -IFCAP_LRO, setifcap),
1578 DEF_CMD("wol", IFCAP_WOL, setifcap),
1579 DEF_CMD("-wol", -IFCAP_WOL, setifcap),
1580 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap),
1581 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap),
1582 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap),
1583 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap),
1584 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap),
1585 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap),
1586 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap),
1587 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap),
1588 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap),
1589 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap),
1590 DEF_CMD("normal", -IFF_LINK0, setifflags),
1591 DEF_CMD("compress", IFF_LINK0, setifflags),
1592 DEF_CMD("noicmp", IFF_LINK1, setifflags),
1593 DEF_CMD_ARG("mtu", setifmtu),
1594 DEF_CMD_ARG("name", setifname),
1597 static __constructor void
1602 for (i = 0; i < nitems(basic_cmds); i++)
1603 cmd_register(&basic_cmds[i]);