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>
84 * Since "struct ifreq" is composed of various union members, callers
85 * should pay special attention to interpret the value.
86 * (.e.g. little/big endian difference in the structure.)
103 int printkeys = 0; /* Print keying material for interfaces. */
106 /* Formatter Strings */
107 char *f_inet, *f_inet6, *f_ether, *f_addr;
109 static bool group_member(const char *ifname, const char *match,
110 const char *nomatch);
111 static int ifconfig(int argc, char *const *argv, int iscreate,
112 const struct afswtch *afp);
113 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
114 struct ifaddrs *ifa);
115 static void tunnel_status(int s);
116 static _Noreturn void usage(void);
118 static int getifflags(const char *ifname, int us);
120 static struct afswtch *af_getbyname(const char *name);
121 static struct afswtch *af_getbyfamily(int af);
122 static void af_other_status(int);
124 void printifnamemaybe(void);
126 static struct option *opts = NULL;
128 struct ifa_order_elt {
132 TAILQ_ENTRY(ifa_order_elt) link;
135 TAILQ_HEAD(ifa_queue, ifa_order_elt);
137 static struct module_map_entry {
143 .kldname = "if_tuntap",
147 .kldname = "if_tuntap",
151 .kldname = "if_tuntap",
159 * This mapping exists because there is a conflicting enc module
160 * in CAM. ifconfig's guessing behavior will attempt to match
161 * the ifname to a module as well as if_${ifname} and clash with
162 * CAM enc. This is an assertion of the correct module to load.
171 opt_register(struct option *p)
183 /* XXX not right but close enough for now */
185 for (p = opts; p != NULL; p = p->next) {
186 strlcat(options, p->opt_usage, sizeof(options));
187 strlcat(options, " ", sizeof(options));
191 "usage: ifconfig [-f type:format] %sinterface address_family\n"
192 " [address [dest_address]] [parameters]\n"
193 " ifconfig interface create\n"
194 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n"
195 " ifconfig -l [-d] [-u] [address_family]\n"
196 " ifconfig %s[-d] [-m] [-u] [-v]\n",
197 options, options, options);
202 ioctl_ifcreate(int s, struct ifreq *ifr)
204 if (ioctl(s, SIOCIFCREATE2, ifr) < 0) {
207 errx(1, "interface %s already exists", ifr->ifr_name);
209 err(1, "SIOCIFCREATE2");
214 #define ORDERS_SIZE(x) sizeof(x) / sizeof(x[0])
217 calcorders(struct ifaddrs *ifa, struct ifa_queue *q)
219 struct ifaddrs *prev;
220 struct ifa_order_elt *cur;
221 unsigned int ord, af, ifa_ord;
228 while (ifa != NULL) {
230 strcmp(ifa->ifa_name, prev->ifa_name) != 0) {
231 cur = calloc(1, sizeof(*cur));
236 TAILQ_INSERT_TAIL(q, cur, link);
237 cur->if_order = ifa_ord ++;
243 af = ifa->ifa_addr->sa_family;
245 if (af < ORDERS_SIZE(cur->af_orders) &&
246 cur->af_orders[af] == 0)
247 cur->af_orders[af] = ++ord;
257 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q)
259 struct ifa_order_elt *cur, *e1, *e2;
260 unsigned int af1, af2;
265 ret = strcmp(a->ifa_name, b->ifa_name);
267 TAILQ_FOREACH(cur, q, link) {
271 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0)
273 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0)
280 return (e1->if_order - e2->if_order);
282 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) {
283 TAILQ_FOREACH(cur, q, link) {
284 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) {
293 af1 = a->ifa_addr->sa_family;
294 af2 = b->ifa_addr->sa_family;
296 if (af1 < ORDERS_SIZE(e1->af_orders) &&
297 af2 < ORDERS_SIZE(e1->af_orders))
298 return (e1->af_orders[af1] - e1->af_orders[af2]);
304 static void freeformat(void)
317 static void setformat(char *input)
319 char *formatstr, *category, *modifier;
321 formatstr = strdup(input);
322 while ((category = strsep(&formatstr, ",")) != NULL) {
323 modifier = strchr(category, ':');
324 if (modifier == NULL || modifier[1] == '\0') {
325 warnx("Skipping invalid format specification: %s\n",
330 /* Split the string on the separator, then seek past it */
334 if (strcmp(category, "addr") == 0)
335 f_addr = strdup(modifier);
336 else if (strcmp(category, "ether") == 0)
337 f_ether = strdup(modifier);
338 else if (strcmp(category, "inet") == 0)
339 f_inet = strdup(modifier);
340 else if (strcmp(category, "inet6") == 0)
341 f_inet6 = strdup(modifier);
348 static struct ifaddrs *
349 sortifaddrs(struct ifaddrs *list,
350 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *),
353 struct ifaddrs *right, *temp, *last, *result, *next, *tail;
362 if (!list || !list->ifa_next)
365 while (temp && temp->ifa_next) {
367 right = right->ifa_next;
368 temp = temp->ifa_next->ifa_next;
371 last->ifa_next = NULL;
373 list = sortifaddrs(list, compare, q);
374 right = sortifaddrs(right, compare, q);
376 while (list || right) {
380 list = list->ifa_next;
383 right = right->ifa_next;
384 } else if (compare(list, right, q) <= 0) {
386 list = list->ifa_next;
389 right = right->ifa_next;
395 tail->ifa_next = next;
403 void printifnamemaybe()
406 printf("%s\n", name);
410 main(int argc, char *argv[])
412 int c, all, namesonly, downonly, uponly;
413 const struct afswtch *afp = NULL;
415 struct ifaddrs *ifap, *sifap, *ifa;
417 const struct sockaddr_dl *sdl;
418 char options[1024], *cp, *envformat, *namecp = NULL;
419 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q);
420 struct ifa_order_elt *cur, *tmp;
421 const char *ifname, *matchgroup, *nogroup;
426 all = downonly = uponly = namesonly = noload = verbose = 0;
427 f_inet = f_inet6 = f_ether = f_addr = NULL;
428 matchgroup = nogroup = NULL;
430 envformat = getenv("IFCONFIG_FORMAT");
431 if (envformat != NULL)
432 setformat(envformat);
435 * Ensure we print interface name when expected to,
436 * even if we terminate early due to error.
438 atexit(printifnamemaybe);
440 /* Parse leading line options */
441 strlcpy(options, "G:adf:klmnuv", sizeof(options));
442 for (p = opts; p != NULL; p = p->next)
443 strlcat(options, p->opt, sizeof(options));
444 while ((c = getopt(argc, argv, options)) != -1) {
446 case 'a': /* scan all interfaces */
449 case 'd': /* restrict scan to "down" interfaces */
458 if (optarg == NULL || all == 0)
465 case 'l': /* scan interface names only */
468 case 'm': /* show media choices in status */
471 case 'n': /* suppress module loading */
474 case 'u': /* restrict scan to "up" interfaces */
489 for (p = opts; p != NULL; p = p->next)
490 if (p->opt[0] == c) {
502 /* -l cannot be used with -a or -m */
503 if (namesonly && (all || supmedia))
507 if (uponly && downonly)
510 /* no arguments is equivalent to '-a' */
511 if (!namesonly && argc < 1)
514 /* -a and -l allow an address family arg to limit the output */
515 if (all || namesonly) {
522 afp = af_getbyname(*argv);
524 warnx("Address family '%s' unknown.", *argv);
527 if (afp->af_name != NULL)
529 /* leave with afp non-zero */
532 /* not listing, need an argument */
539 /* check and maybe load support for this interface */
542 ifindex = if_nametoindex(ifname);
545 * NOTE: We must special-case the `create' command
546 * right here as we would otherwise fail when trying
547 * to find the interface.
549 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
550 strcmp(argv[0], "plumb") == 0)) {
551 iflen = strlcpy(name, ifname, sizeof(name));
552 if (iflen >= sizeof(name))
553 errx(1, "%s: cloning name too long",
555 ifconfig(argc, argv, 1, NULL);
560 * NOTE: We have to special-case the `-vnet' command
561 * right here as we would otherwise fail when trying
562 * to find the interface as it lives in another vnet.
564 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) {
565 iflen = strlcpy(name, ifname, sizeof(name));
566 if (iflen >= sizeof(name))
567 errx(1, "%s: interface name too long",
569 ifconfig(argc, argv, 0, NULL);
573 errx(1, "interface %s does not exist", ifname);
576 * Do not allow use `create` command as hostname if
577 * address family is not specified.
579 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
580 strcmp(argv[0], "plumb") == 0)) {
582 errx(1, "interface %s already exists",
589 /* Check for address family */
591 afp = af_getbyname(*argv);
597 * Check for a requested configuration action on a single interface,
598 * which doesn't require building, sorting, and searching the entire
599 * system address list
601 if ((argc > 0) && (ifname != NULL)) {
602 iflen = strlcpy(name, ifname, sizeof(name));
603 if (iflen >= sizeof(name)) {
604 warnx("%s: interface name too long, skipping", ifname);
606 flags = getifflags(name, -1);
607 if (!(((flags & IFF_CANTCONFIG) != 0) ||
608 (downonly && (flags & IFF_UP) != 0) ||
609 (uponly && (flags & IFF_UP) == 0)))
610 ifconfig(argc, argv, 0, afp);
615 if (getifaddrs(&ifap) != 0)
616 err(EXIT_FAILURE, "getifaddrs");
620 if (calcorders(ifap, &q) != 0)
621 err(EXIT_FAILURE, "calcorders");
623 sifap = sortifaddrs(ifap, cmpifaddrs, &q);
625 TAILQ_FOREACH_SAFE(cur, &q, link, tmp)
629 for (ifa = sifap; ifa; ifa = ifa->ifa_next) {
630 memset(&paifr, 0, sizeof(paifr));
631 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));
632 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
633 memcpy(&paifr.ifr_addr, ifa->ifa_addr,
634 ifa->ifa_addr->sa_len);
637 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
639 if (ifa->ifa_addr->sa_family == AF_LINK)
640 sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
643 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly)
645 iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
646 if (iflen >= sizeof(name)) {
647 warnx("%s: interface name too long, skipping",
653 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0)
655 if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
657 if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
659 if (!group_member(ifa->ifa_name, matchgroup, nogroup))
662 * Are we just listing the interfaces?
668 /* special case for "ether" address family */
669 if (!strcmp(afp->af_name, "ether")) {
671 (sdl->sdl_type != IFT_ETHER &&
672 sdl->sdl_type != IFT_L2VLAN &&
673 sdl->sdl_type != IFT_BRIDGE) ||
674 sdl->sdl_alen != ETHER_ADDR_LEN)
677 if (ifa->ifa_addr->sa_family
692 ifconfig(argc, argv, 0, afp);
694 status(afp, sdl, ifa);
706 * Returns true if an interface should be listed because any its groups
707 * matches shell pattern "match" and none of groups matches pattern "nomatch".
708 * If any pattern is NULL, corresponding condition is skipped.
711 group_member(const char *ifname, const char *match, const char *nomatch)
713 static int sock = -1;
715 struct ifgroupreq ifgr;
718 bool matched, nomatched;
721 if (match == NULL && nomatch == NULL)
726 memset(&ifgr, 0, sizeof(ifgr));
727 strlcpy(ifgr.ifgr_name, ifname, IFNAMSIZ);
729 /* The socket is opened once. Let _exit() close it. */
731 sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
733 errx(1, "%s: socket(AF_LOCAL,SOCK_DGRAM)", __func__);
736 /* Determine amount of memory for the list of groups. */
737 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) {
738 if (errno == EINVAL || errno == ENOTTY)
741 errx(1, "%s: SIOCGIFGROUP", __func__);
744 /* Obtain the list of groups. */
747 (struct ifg_req *)calloc(len / sizeof(*ifg), sizeof(*ifg));
749 if (ifgr.ifgr_groups == NULL)
750 errx(1, "%s: no memory", __func__);
751 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
752 errx(1, "%s: SIOCGIFGROUP", __func__);
754 /* Perform matching. */
757 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(*ifg); ifg++) {
758 len -= sizeof(struct ifg_req);
760 matched |= !fnmatch(match, ifg->ifgrq_group, 0);
762 nomatched &= fnmatch(nomatch, ifg->ifgrq_group, 0);
764 free(ifgr.ifgr_groups);
766 if (match && !nomatch)
768 if (!match && nomatch)
770 return (matched && nomatched);
773 static struct afswtch *afs = NULL;
776 af_register(struct afswtch *p)
782 static struct afswtch *
783 af_getbyname(const char *name)
787 for (afp = afs; afp != NULL; afp = afp->af_next)
788 if (strcmp(afp->af_name, name) == 0)
793 static struct afswtch *
794 af_getbyfamily(int af)
798 for (afp = afs; afp != NULL; afp = afp->af_next)
799 if (afp->af_af == af)
805 af_other_status(int s)
808 uint8_t afmask[howmany(AF_MAX, NBBY)];
810 memset(afmask, 0, sizeof(afmask));
811 for (afp = afs; afp != NULL; afp = afp->af_next) {
812 if (afp->af_other_status == NULL)
814 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
816 afp->af_other_status(s);
817 setbit(afmask, afp->af_af);
822 af_all_tunnel_status(int s)
825 uint8_t afmask[howmany(AF_MAX, NBBY)];
827 memset(afmask, 0, sizeof(afmask));
828 for (afp = afs; afp != NULL; afp = afp->af_next) {
829 if (afp->af_status_tunnel == NULL)
831 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
833 afp->af_status_tunnel(s);
834 setbit(afmask, afp->af_af);
838 static struct cmd *cmds = NULL;
841 cmd_register(struct cmd *p)
847 static const struct cmd *
848 cmd_lookup(const char *name, int iscreate)
852 for (p = cmds; p != NULL; p = p->c_next)
853 if (strcmp(name, p->c_name) == 0) {
866 callback_func *cb_func;
868 struct callback *cb_next;
870 static struct callback *callbacks = NULL;
873 callback_register(callback_func *func, void *arg)
877 cb = malloc(sizeof(struct callback));
879 errx(1, "unable to allocate memory for callback");
882 cb->cb_next = callbacks;
886 /* specially-handled commands */
887 static void setifaddr(const char *, int, int, const struct afswtch *);
888 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr);
890 static void setifdstaddr(const char *, int, int, const struct afswtch *);
891 static const struct cmd setifdstaddr_cmd =
892 DEF_CMD("ifdstaddr", 0, setifdstaddr);
895 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp)
897 const struct afswtch *afp, *nafp;
902 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
907 * This is the historical "accident" allowing users to configure IPv4
908 * addresses without the "inet" keyword which while a nice feature has
909 * proven to complicate other things. We cannot remove this but only
910 * make sure we will never have a similar implicit default for IPv6 or
911 * any other address familiy. We need a fallback though for
912 * ifconfig IF up/down etc. to work without INET support as people
913 * never used ifconfig IF link up/down, etc. either.
917 if (afp == NULL && feature_present("inet"))
918 afp = af_getbyname("inet");
922 afp = af_getbyname("link");
924 warnx("Please specify an address_family.");
928 ifr.ifr_addr.sa_family =
929 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ?
930 AF_LOCAL : afp->af_af;
932 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 &&
933 (uafp != NULL || errno != EAFNOSUPPORT ||
934 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0))
935 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
938 p = cmd_lookup(*argv, iscreate);
939 if (iscreate && p == NULL) {
941 * Push the clone create callback so the new
942 * device is created and can be used for any
943 * remaining arguments.
947 errx(1, "internal error, no callback");
948 callbacks = cb->cb_next;
949 cb->cb_func(s, cb->cb_arg);
952 * Handle any address family spec that
953 * immediately follows and potentially
954 * recreate the socket.
956 nafp = af_getbyname(*argv);
966 * Look for a normal parameter.
972 * Not a recognized command, choose between setting
973 * the interface address and the dst address.
975 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd);
977 if (p->c_parameter == NEXTARG && p->c_u.c_func) {
979 errx(1, "'%s' requires argument",
981 p->c_u.c_func(argv[1], 0, s, afp);
983 } else if (p->c_parameter == OPTARG && p->c_u.c_func) {
984 p->c_u.c_func(argv[1], 0, s, afp);
987 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) {
989 errx(1, "'%s' requires 2 arguments",
991 p->c_u.c_func2(argv[1], argv[2], s, afp);
992 argc -= 2, argv += 2;
993 } else if (p->c_u.c_func)
994 p->c_u.c_func(*argv, p->c_parameter, s, afp);
999 * Do any post argument processing required by the address family.
1001 if (afp->af_postproc != NULL)
1002 afp->af_postproc(s, afp);
1004 * Do deferred callbacks registered while processing
1005 * command-line arguments.
1007 for (cb = callbacks; cb != NULL; cb = cb->cb_next)
1008 cb->cb_func(s, cb->cb_arg);
1010 * Do deferred operations.
1013 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
1014 warnx("interface %s cannot change %s addresses!",
1015 name, afp->af_name);
1021 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name,
1022 sizeof ifr.ifr_name);
1023 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq);
1025 if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
1026 /* means no previous address for interface */
1028 Perror("ioctl (SIOCDIFADDR)");
1032 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
1033 warnx("interface %s cannot change %s addresses!",
1034 name, afp->af_name);
1038 if (newaddr && (setaddr || setmask)) {
1039 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name,
1040 sizeof ifr.ifr_name);
1041 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0)
1042 Perror("ioctl (SIOCAIFADDR)");
1051 setifaddr(const char *addr, int param, int s, const struct afswtch *afp)
1053 if (afp->af_getaddr == NULL)
1056 * Delay the ioctl to set the interface addr until flags are all set.
1057 * The address interpretation may depend on the flags,
1058 * and the flags may change when the address is set.
1061 if (doalias == 0 && afp->af_af != AF_LINK)
1063 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR));
1067 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp)
1069 struct addrinfo *srcres, *dstres;
1072 if (afp->af_settunnel == NULL) {
1073 warn("address family %s does not support tunnel setup",
1078 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0)
1079 errx(1, "error in parsing address string: %s",
1080 gai_strerror(ecode));
1082 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0)
1083 errx(1, "error in parsing address string: %s",
1084 gai_strerror(ecode));
1086 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family)
1088 "source and destination address families do not match");
1090 afp->af_settunnel(s, srcres, dstres);
1092 freeaddrinfo(srcres);
1093 freeaddrinfo(dstres);
1098 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp)
1101 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0)
1102 err(1, "SIOCDIFPHYADDR");
1107 setifvnet(const char *jname, int dummy __unused, int s,
1108 const struct afswtch *afp)
1110 struct ifreq my_ifr;
1112 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
1113 my_ifr.ifr_jid = jail_getid(jname);
1114 if (my_ifr.ifr_jid < 0)
1115 errx(1, "%s", jail_errmsg);
1116 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0)
1117 err(1, "SIOCSIFVNET");
1121 setifrvnet(const char *jname, int dummy __unused, int s,
1122 const struct afswtch *afp)
1124 struct ifreq my_ifr;
1126 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
1127 my_ifr.ifr_jid = jail_getid(jname);
1128 if (my_ifr.ifr_jid < 0)
1129 errx(1, "%s", jail_errmsg);
1130 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0)
1131 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name);
1136 setifnetmask(const char *addr, int dummy __unused, int s,
1137 const struct afswtch *afp)
1139 if (afp->af_getaddr != NULL) {
1141 afp->af_getaddr(addr, MASK);
1146 setifbroadaddr(const char *addr, int dummy __unused, int s,
1147 const struct afswtch *afp)
1149 if (afp->af_getaddr != NULL)
1150 afp->af_getaddr(addr, DSTADDR);
1154 notealias(const char *addr, int param, int s, const struct afswtch *afp)
1156 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
1157 if (setaddr && doalias == 0 && param < 0)
1158 if (afp->af_addreq != NULL && afp->af_ridreq != NULL)
1159 bcopy((caddr_t)rqtosa(af_addreq),
1160 (caddr_t)rqtosa(af_ridreq),
1161 rqtosa(af_addreq)->sa_len);
1173 setifdstaddr(const char *addr, int param __unused, int s,
1174 const struct afswtch *afp)
1176 if (afp->af_getaddr != NULL)
1177 afp->af_getaddr(addr, DSTADDR);
1181 getifflags(const char *ifname, int us)
1183 struct ifreq my_ifr;
1186 memset(&my_ifr, 0, sizeof(my_ifr));
1187 (void) strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name));
1189 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)
1190 err(1, "socket(family AF_LOCAL,SOCK_DGRAM");
1193 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) {
1194 Perror("ioctl (SIOCGIFFLAGS)");
1199 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16));
1203 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion
1204 * of the ifreq structure, which may confuse other parts of ifconfig.
1205 * Make a private copy so we can avoid that.
1208 setifflags(const char *vname, int value, int s, const struct afswtch *afp)
1210 struct ifreq my_ifr;
1213 flags = getifflags(name, s);
1219 memset(&my_ifr, 0, sizeof(my_ifr));
1220 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name));
1221 my_ifr.ifr_flags = flags & 0xffff;
1222 my_ifr.ifr_flagshigh = flags >> 16;
1223 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)
1228 setifcap(const char *vname, int value, int s, const struct afswtch *afp)
1232 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) {
1233 Perror("ioctl (SIOCGIFCAP)");
1236 flags = ifr.ifr_curcap;
1242 flags &= ifr.ifr_reqcap;
1243 ifr.ifr_reqcap = flags;
1244 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0)
1249 setifmetric(const char *val, int dummy __unused, int s,
1250 const struct afswtch *afp)
1252 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1253 ifr.ifr_metric = atoi(val);
1254 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
1255 err(1, "ioctl SIOCSIFMETRIC (set metric)");
1259 setifmtu(const char *val, int dummy __unused, int s,
1260 const struct afswtch *afp)
1262 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1263 ifr.ifr_mtu = atoi(val);
1264 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
1265 err(1, "ioctl SIOCSIFMTU (set mtu)");
1269 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp)
1274 ul = strtoul(val, &endp, 0);
1276 errx(1, "invalid value for pcp");
1278 errx(1, "value for pcp out of range");
1279 ifr.ifr_lan_pcp = ul;
1280 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1281 err(1, "SIOCSLANPCP");
1285 disableifpcp(const char *val, int arg __unused, int s,
1286 const struct afswtch *afp)
1289 ifr.ifr_lan_pcp = IFNET_PCP_NONE;
1290 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1291 err(1, "SIOCSLANPCP");
1295 setifname(const char *val, int dummy __unused, int s,
1296 const struct afswtch *afp)
1300 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1302 newname = strdup(val);
1303 if (newname == NULL)
1304 err(1, "no memory to set ifname");
1305 ifr.ifr_data = newname;
1306 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) {
1308 err(1, "ioctl SIOCSIFNAME (set name)");
1311 strlcpy(name, newname, sizeof(name));
1317 setifdescr(const char *val, int dummy __unused, int s,
1318 const struct afswtch *afp)
1322 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1324 ifr.ifr_buffer.length = strlen(val) + 1;
1325 if (ifr.ifr_buffer.length == 1) {
1326 ifr.ifr_buffer.buffer = newdescr = NULL;
1327 ifr.ifr_buffer.length = 0;
1329 newdescr = strdup(val);
1330 ifr.ifr_buffer.buffer = newdescr;
1331 if (newdescr == NULL) {
1332 warn("no memory to set ifdescr");
1337 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0)
1338 err(1, "ioctl SIOCSIFDESCR (set descr)");
1345 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp)
1348 setifdescr("", 0, s, 0);
1352 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \
1353 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
1354 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP"
1357 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
1358 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \
1359 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \
1360 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP\33NOMAP\34TXTLS4\35TXTLS6" \
1361 "\36VXLAN_HWCSUM\37VXLAN_HWTSO\40TXTLS_RTLMT"
1364 * Print the status of the interface. If an address family was
1365 * specified, show only it; otherwise, show them all.
1368 status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
1369 struct ifaddrs *ifa)
1371 struct ifaddrs *ift;
1377 ifr.ifr_addr.sa_family = AF_LOCAL;
1380 ifr.ifr_addr.sa_family =
1381 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af;
1383 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1385 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
1387 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
1389 printf("%s: ", name);
1390 printb("flags", ifa->ifa_flags, IFFBITS);
1391 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1)
1392 printf(" metric %d", ifr.ifr_metric);
1393 if (ioctl(s, SIOCGIFMTU, &ifr) != -1)
1394 printf(" mtu %d", ifr.ifr_mtu);
1398 if ((descr = reallocf(descr, descrlen)) != NULL) {
1399 ifr.ifr_buffer.buffer = descr;
1400 ifr.ifr_buffer.length = descrlen;
1401 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) {
1402 if (ifr.ifr_buffer.buffer == descr) {
1403 if (strlen(descr) > 0)
1404 printf("\tdescription: %s\n",
1406 } else if (ifr.ifr_buffer.length > descrlen) {
1407 descrlen = ifr.ifr_buffer.length;
1412 warn("unable to allocate memory for interface"
1417 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) {
1418 if (ifr.ifr_curcap != 0) {
1419 printb("\toptions", ifr.ifr_curcap, IFCAPBITS);
1422 if (supmedia && ifr.ifr_reqcap != 0) {
1423 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS);
1430 for (ift = ifa; ift != NULL; ift = ift->ifa_next) {
1431 if (ift->ifa_addr == NULL)
1433 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0)
1436 const struct afswtch *p;
1437 p = af_getbyfamily(ift->ifa_addr->sa_family);
1438 if (p != NULL && p->af_status != NULL)
1439 p->af_status(s, ift);
1440 } else if (afp->af_af == ift->ifa_addr->sa_family)
1441 afp->af_status(s, ift);
1444 if (allfamilies || afp->af_af == AF_LINK) {
1445 const struct afswtch *lafp;
1448 * Hack; the link level address is received separately
1449 * from the routing information so any address is not
1450 * handled above. Cobble together an entry and invoke
1451 * the status method specially.
1453 lafp = af_getbyname("lladdr");
1455 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl;
1456 lafp->af_status(s, &info);
1462 else if (afp->af_other_status != NULL)
1463 afp->af_other_status(s);
1465 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
1466 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
1467 printf("%s", ifs.ascii);
1470 sfp_status(s, &ifr, verbose);
1477 tunnel_status(int s)
1479 af_all_tunnel_status(s);
1483 Perror(const char *cmd)
1488 errx(1, "%s: no such interface", cmd);
1492 errx(1, "%s: permission denied", cmd);
1501 * Print a value a la the %b format of the kernel's printf
1504 printb(const char *s, unsigned v, const char *bits)
1509 if (bits && *bits == 8)
1510 printf("%s=%o", s, v);
1512 printf("%s=%x", s, v);
1516 while ((i = *bits++) != '\0') {
1517 if (v & (1 << (i-1))) {
1521 for (; (c = *bits) > 32; bits++)
1524 for (; *bits > 32; bits++)
1532 print_vhid(const struct ifaddrs *ifa, const char *s)
1534 struct if_data *ifd;
1536 if (ifa->ifa_data == NULL)
1539 ifd = ifa->ifa_data;
1540 if (ifd->ifi_vhid == 0)
1543 printf(" vhid %d", ifd->ifi_vhid);
1547 ifmaybeload(const char *name)
1549 #define MOD_PREFIX_LEN 3 /* "if_" */
1550 struct module_stat mstat;
1551 int i, fileid, modid;
1552 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp;
1554 struct module_map_entry *mme;
1557 /* loading suppressed by the user */
1561 /* trim the interface number off the end */
1562 strlcpy(ifname, name, sizeof(ifname));
1563 for (dp = ifname; *dp != 0; dp++)
1569 /* Either derive it from the map or guess otherwise */
1572 for (i = 0; i < nitems(module_map); ++i) {
1573 mme = &module_map[i];
1574 if (strcmp(mme->ifname, ifname) == 0) {
1575 strlcpy(ifkind, mme->kldname, sizeof(ifkind));
1581 /* We didn't have an alias for it... we'll guess. */
1583 /* turn interface and unit into module name */
1584 strlcpy(ifkind, "if_", sizeof(ifkind));
1585 strlcat(ifkind, ifname, sizeof(ifkind));
1588 /* scan files in kernel */
1589 mstat.version = sizeof(struct module_stat);
1590 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
1591 /* scan modules in file */
1592 for (modid = kldfirstmod(fileid); modid > 0;
1593 modid = modfnext(modid)) {
1594 if (modstat(modid, &mstat) < 0)
1596 /* strip bus name if present */
1597 if ((cp = strchr(mstat.name, '/')) != NULL) {
1603 * Is it already loaded? Don't compare with ifname if
1604 * we were specifically told which kld to use. Doing
1605 * so could lead to conflicts not trivially solved.
1607 if ((!found && strcmp(ifname, cp) == 0) ||
1608 strcmp(ifkind, cp) == 0)
1614 * Try to load the module. But ignore failures, because ifconfig can't
1615 * infer the names of all drivers (eg mlx4en(4)).
1617 (void) kldload(ifkind);
1620 static struct cmd basic_cmds[] = {
1621 DEF_CMD("up", IFF_UP, setifflags),
1622 DEF_CMD("down", -IFF_UP, setifflags),
1623 DEF_CMD("arp", -IFF_NOARP, setifflags),
1624 DEF_CMD("-arp", IFF_NOARP, setifflags),
1625 DEF_CMD("debug", IFF_DEBUG, setifflags),
1626 DEF_CMD("-debug", -IFF_DEBUG, setifflags),
1627 DEF_CMD_ARG("description", setifdescr),
1628 DEF_CMD_ARG("descr", setifdescr),
1629 DEF_CMD("-description", 0, unsetifdescr),
1630 DEF_CMD("-descr", 0, unsetifdescr),
1631 DEF_CMD("promisc", IFF_PPROMISC, setifflags),
1632 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags),
1633 DEF_CMD("add", IFF_UP, notealias),
1634 DEF_CMD("alias", IFF_UP, notealias),
1635 DEF_CMD("-alias", -IFF_UP, notealias),
1636 DEF_CMD("delete", -IFF_UP, notealias),
1637 DEF_CMD("remove", -IFF_UP, notealias),
1639 #define EN_SWABIPS 0x1000
1640 DEF_CMD("swabips", EN_SWABIPS, setifflags),
1641 DEF_CMD("-swabips", -EN_SWABIPS, setifflags),
1643 DEF_CMD_ARG("netmask", setifnetmask),
1644 DEF_CMD_ARG("metric", setifmetric),
1645 DEF_CMD_ARG("broadcast", setifbroadaddr),
1646 DEF_CMD_ARG2("tunnel", settunnel),
1647 DEF_CMD("-tunnel", 0, deletetunnel),
1648 DEF_CMD("deletetunnel", 0, deletetunnel),
1650 DEF_CMD_ARG("vnet", setifvnet),
1651 DEF_CMD_ARG("-vnet", setifrvnet),
1653 DEF_CMD("link0", IFF_LINK0, setifflags),
1654 DEF_CMD("-link0", -IFF_LINK0, setifflags),
1655 DEF_CMD("link1", IFF_LINK1, setifflags),
1656 DEF_CMD("-link1", -IFF_LINK1, setifflags),
1657 DEF_CMD("link2", IFF_LINK2, setifflags),
1658 DEF_CMD("-link2", -IFF_LINK2, setifflags),
1659 DEF_CMD("monitor", IFF_MONITOR, setifflags),
1660 DEF_CMD("-monitor", -IFF_MONITOR, setifflags),
1661 DEF_CMD("nomap", IFCAP_NOMAP, setifcap),
1662 DEF_CMD("-nomap", -IFCAP_NOMAP, setifcap),
1663 DEF_CMD("staticarp", IFF_STATICARP, setifflags),
1664 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags),
1665 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap),
1666 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap),
1667 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap),
1668 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap),
1669 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap),
1670 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap),
1671 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap),
1672 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap),
1673 DEF_CMD("netcons", IFCAP_NETCONS, setifcap),
1674 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap),
1675 DEF_CMD_ARG("pcp", setifpcp),
1676 DEF_CMD("-pcp", 0, disableifpcp),
1677 DEF_CMD("polling", IFCAP_POLLING, setifcap),
1678 DEF_CMD("-polling", -IFCAP_POLLING, setifcap),
1679 DEF_CMD("tso6", IFCAP_TSO6, setifcap),
1680 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap),
1681 DEF_CMD("tso4", IFCAP_TSO4, setifcap),
1682 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap),
1683 DEF_CMD("tso", IFCAP_TSO, setifcap),
1684 DEF_CMD("-tso", -IFCAP_TSO, setifcap),
1685 DEF_CMD("toe", IFCAP_TOE, setifcap),
1686 DEF_CMD("-toe", -IFCAP_TOE, setifcap),
1687 DEF_CMD("lro", IFCAP_LRO, setifcap),
1688 DEF_CMD("-lro", -IFCAP_LRO, setifcap),
1689 DEF_CMD("txtls", IFCAP_TXTLS, setifcap),
1690 DEF_CMD("-txtls", -IFCAP_TXTLS, setifcap),
1691 DEF_CMD("wol", IFCAP_WOL, setifcap),
1692 DEF_CMD("-wol", -IFCAP_WOL, setifcap),
1693 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap),
1694 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap),
1695 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap),
1696 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap),
1697 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap),
1698 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap),
1699 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap),
1700 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap),
1701 DEF_CMD("txtlsrtlmt", IFCAP_TXTLS_RTLMT, setifcap),
1702 DEF_CMD("-txtlsrtlmt", -IFCAP_TXTLS_RTLMT, setifcap),
1703 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap),
1704 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap),
1705 DEF_CMD("normal", -IFF_LINK0, setifflags),
1706 DEF_CMD("compress", IFF_LINK0, setifflags),
1707 DEF_CMD("noicmp", IFF_LINK1, setifflags),
1708 DEF_CMD_ARG("mtu", setifmtu),
1709 DEF_CMD_ARG("name", setifname),
1712 static __constructor void
1717 for (i = 0; i < nitems(basic_cmds); i++)
1718 cmd_register(&basic_cmds[i]);