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 struct afswtch *af_getbyname(const char *name);
115 static struct afswtch *af_getbyfamily(int af);
116 static void af_other_status(int);
118 void printifnamemaybe(void);
120 static struct option *opts = NULL;
122 struct ifa_order_elt {
126 TAILQ_ENTRY(ifa_order_elt) link;
129 TAILQ_HEAD(ifa_queue, ifa_order_elt);
132 opt_register(struct option *p)
144 /* XXX not right but close enough for now */
146 for (p = opts; p != NULL; p = p->next) {
147 strlcat(options, p->opt_usage, sizeof(options));
148 strlcat(options, " ", sizeof(options));
152 "usage: ifconfig [-f type:format] %sinterface address_family\n"
153 " [address [dest_address]] [parameters]\n"
154 " ifconfig interface create\n"
155 " ifconfig -a %s[-d] [-m] [-u] [-v] [address_family]\n"
156 " ifconfig -l [-d] [-u] [address_family]\n"
157 " ifconfig %s[-d] [-m] [-u] [-v]\n",
158 options, options, options);
162 #define ORDERS_SIZE(x) sizeof(x) / sizeof(x[0])
165 calcorders(struct ifaddrs *ifa, struct ifa_queue *q)
167 struct ifaddrs *prev;
168 struct ifa_order_elt *cur;
169 unsigned int ord, af, ifa_ord;
176 while (ifa != NULL) {
178 strcmp(ifa->ifa_name, prev->ifa_name) != 0) {
179 cur = calloc(1, sizeof(*cur));
184 TAILQ_INSERT_TAIL(q, cur, link);
185 cur->if_order = ifa_ord ++;
191 af = ifa->ifa_addr->sa_family;
193 if (af < ORDERS_SIZE(cur->af_orders) &&
194 cur->af_orders[af] == 0)
195 cur->af_orders[af] = ++ord;
205 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q)
207 struct ifa_order_elt *cur, *e1, *e2;
208 unsigned int af1, af2;
213 ret = strcmp(a->ifa_name, b->ifa_name);
215 TAILQ_FOREACH(cur, q, link) {
219 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0)
221 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0)
228 return (e1->if_order - e2->if_order);
230 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) {
231 TAILQ_FOREACH(cur, q, link) {
232 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) {
241 af1 = a->ifa_addr->sa_family;
242 af2 = b->ifa_addr->sa_family;
244 if (af1 < ORDERS_SIZE(e1->af_orders) &&
245 af2 < ORDERS_SIZE(e1->af_orders))
246 return (e1->af_orders[af1] - e1->af_orders[af2]);
252 static void freeformat(void)
265 static void setformat(char *input)
267 char *formatstr, *category, *modifier;
269 formatstr = strdup(input);
270 while ((category = strsep(&formatstr, ",")) != NULL) {
271 modifier = strchr(category, ':');
272 if (modifier == NULL || modifier[1] == '\0') {
273 warnx("Skipping invalid format specification: %s\n",
278 /* Split the string on the separator, then seek past it */
282 if (strcmp(category, "addr") == 0)
283 f_addr = strdup(modifier);
284 else if (strcmp(category, "ether") == 0)
285 f_ether = strdup(modifier);
286 else if (strcmp(category, "inet") == 0)
287 f_inet = strdup(modifier);
288 else if (strcmp(category, "inet6") == 0)
289 f_inet6 = strdup(modifier);
296 static struct ifaddrs *
297 sortifaddrs(struct ifaddrs *list,
298 int (*compare)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *),
301 struct ifaddrs *right, *temp, *last, *result, *next, *tail;
310 if (!list || !list->ifa_next)
313 while (temp && temp->ifa_next) {
315 right = right->ifa_next;
316 temp = temp->ifa_next->ifa_next;
319 last->ifa_next = NULL;
321 list = sortifaddrs(list, compare, q);
322 right = sortifaddrs(right, compare, q);
324 while (list || right) {
328 list = list->ifa_next;
331 right = right->ifa_next;
332 } else if (compare(list, right, q) <= 0) {
334 list = list->ifa_next;
337 right = right->ifa_next;
343 tail->ifa_next = next;
351 void printifnamemaybe()
354 printf("%s\n", name);
358 main(int argc, char *argv[])
360 int c, all, namesonly, downonly, uponly;
361 const struct afswtch *afp = NULL;
363 struct ifaddrs *ifap, *sifap, *ifa;
365 const struct sockaddr_dl *sdl;
366 char options[1024], *cp, *envformat, *namecp = NULL;
367 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q);
368 struct ifa_order_elt *cur, *tmp;
373 all = downonly = uponly = namesonly = noload = verbose = 0;
374 f_inet = f_inet6 = f_ether = f_addr = NULL;
376 envformat = getenv("IFCONFIG_FORMAT");
377 if (envformat != NULL)
378 setformat(envformat);
381 * Ensure we print interface name when expected to,
382 * even if we terminate early due to error.
384 atexit(printifnamemaybe);
386 /* Parse leading line options */
387 strlcpy(options, "f:adklmnuv", sizeof(options));
388 for (p = opts; p != NULL; p = p->next)
389 strlcat(options, p->opt, sizeof(options));
390 while ((c = getopt(argc, argv, options)) != -1) {
392 case 'a': /* scan all interfaces */
395 case 'd': /* restrict scan to "down" interfaces */
406 case 'l': /* scan interface names only */
409 case 'm': /* show media choices in status */
412 case 'n': /* suppress module loading */
415 case 'u': /* restrict scan to "up" interfaces */
422 for (p = opts; p != NULL; p = p->next)
423 if (p->opt[0] == c) {
435 /* -l cannot be used with -a or -m */
436 if (namesonly && (all || supmedia))
440 if (uponly && downonly)
443 /* no arguments is equivalent to '-a' */
444 if (!namesonly && argc < 1)
447 /* -a and -l allow an address family arg to limit the output */
448 if (all || namesonly) {
455 afp = af_getbyname(*argv);
457 warnx("Address family '%s' unknown.", *argv);
460 if (afp->af_name != NULL)
462 /* leave with afp non-zero */
465 /* not listing, need an argument */
472 /* check and maybe load support for this interface */
475 ifindex = if_nametoindex(ifname);
478 * NOTE: We must special-case the `create' command
479 * right here as we would otherwise fail when trying
480 * to find the interface.
482 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
483 strcmp(argv[0], "plumb") == 0)) {
484 iflen = strlcpy(name, ifname, sizeof(name));
485 if (iflen >= sizeof(name))
486 errx(1, "%s: cloning name too long",
488 ifconfig(argc, argv, 1, NULL);
493 * NOTE: We have to special-case the `-vnet' command
494 * right here as we would otherwise fail when trying
495 * to find the interface as it lives in another vnet.
497 if (argc > 0 && (strcmp(argv[0], "-vnet") == 0)) {
498 iflen = strlcpy(name, ifname, sizeof(name));
499 if (iflen >= sizeof(name))
500 errx(1, "%s: interface name too long",
502 ifconfig(argc, argv, 0, NULL);
506 errx(1, "interface %s does not exist", ifname);
510 /* Check for address family */
512 afp = af_getbyname(*argv);
517 if (getifaddrs(&ifap) != 0)
518 err(EXIT_FAILURE, "getifaddrs");
522 if (calcorders(ifap, &q) != 0)
523 err(EXIT_FAILURE, "calcorders");
525 sifap = sortifaddrs(ifap, cmpifaddrs, &q);
527 TAILQ_FOREACH_SAFE(cur, &q, link, tmp)
531 for (ifa = sifap; ifa; ifa = ifa->ifa_next) {
532 memset(&paifr, 0, sizeof(paifr));
533 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));
534 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
535 memcpy(&paifr.ifr_addr, ifa->ifa_addr,
536 ifa->ifa_addr->sa_len);
539 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
541 if (ifa->ifa_addr->sa_family == AF_LINK)
542 sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
545 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0 && !namesonly)
547 iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
548 if (iflen >= sizeof(name)) {
549 warnx("%s: interface name too long, skipping",
555 if ((ifa->ifa_flags & IFF_CANTCONFIG) != 0)
557 if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
559 if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
562 * Are we just listing the interfaces?
568 /* special case for "ether" address family */
569 if (!strcmp(afp->af_name, "ether")) {
571 (sdl->sdl_type != IFT_ETHER &&
572 sdl->sdl_type != IFT_L2VLAN &&
573 sdl->sdl_type != IFT_BRIDGE) ||
574 sdl->sdl_alen != ETHER_ADDR_LEN)
577 if (ifa->ifa_addr->sa_family
592 ifconfig(argc, argv, 0, afp);
594 status(afp, sdl, ifa);
604 static struct afswtch *afs = NULL;
607 af_register(struct afswtch *p)
613 static struct afswtch *
614 af_getbyname(const char *name)
618 for (afp = afs; afp != NULL; afp = afp->af_next)
619 if (strcmp(afp->af_name, name) == 0)
624 static struct afswtch *
625 af_getbyfamily(int af)
629 for (afp = afs; afp != NULL; afp = afp->af_next)
630 if (afp->af_af == af)
636 af_other_status(int s)
639 uint8_t afmask[howmany(AF_MAX, NBBY)];
641 memset(afmask, 0, sizeof(afmask));
642 for (afp = afs; afp != NULL; afp = afp->af_next) {
643 if (afp->af_other_status == NULL)
645 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
647 afp->af_other_status(s);
648 setbit(afmask, afp->af_af);
653 af_all_tunnel_status(int s)
656 uint8_t afmask[howmany(AF_MAX, NBBY)];
658 memset(afmask, 0, sizeof(afmask));
659 for (afp = afs; afp != NULL; afp = afp->af_next) {
660 if (afp->af_status_tunnel == NULL)
662 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
664 afp->af_status_tunnel(s);
665 setbit(afmask, afp->af_af);
669 static struct cmd *cmds = NULL;
672 cmd_register(struct cmd *p)
678 static const struct cmd *
679 cmd_lookup(const char *name, int iscreate)
683 for (p = cmds; p != NULL; p = p->c_next)
684 if (strcmp(name, p->c_name) == 0) {
697 callback_func *cb_func;
699 struct callback *cb_next;
701 static struct callback *callbacks = NULL;
704 callback_register(callback_func *func, void *arg)
708 cb = malloc(sizeof(struct callback));
710 errx(1, "unable to allocate memory for callback");
713 cb->cb_next = callbacks;
717 /* specially-handled commands */
718 static void setifaddr(const char *, int, int, const struct afswtch *);
719 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr);
721 static void setifdstaddr(const char *, int, int, const struct afswtch *);
722 static const struct cmd setifdstaddr_cmd =
723 DEF_CMD("ifdstaddr", 0, setifdstaddr);
726 ifconfig(int argc, char *const *argv, int iscreate, const struct afswtch *uafp)
728 const struct afswtch *afp, *nafp;
733 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
738 * This is the historical "accident" allowing users to configure IPv4
739 * addresses without the "inet" keyword which while a nice feature has
740 * proven to complicate other things. We cannot remove this but only
741 * make sure we will never have a similar implicit default for IPv6 or
742 * any other address familiy. We need a fallback though for
743 * ifconfig IF up/down etc. to work without INET support as people
744 * never used ifconfig IF link up/down, etc. either.
748 if (afp == NULL && feature_present("inet"))
749 afp = af_getbyname("inet");
753 afp = af_getbyname("link");
755 warnx("Please specify an address_family.");
759 ifr.ifr_addr.sa_family =
760 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ?
761 AF_LOCAL : afp->af_af;
763 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 &&
764 (uafp != NULL || errno != EAFNOSUPPORT ||
765 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0))
766 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
769 p = cmd_lookup(*argv, iscreate);
770 if (iscreate && p == NULL) {
772 * Push the clone create callback so the new
773 * device is created and can be used for any
774 * remaining arguments.
778 errx(1, "internal error, no callback");
779 callbacks = cb->cb_next;
780 cb->cb_func(s, cb->cb_arg);
783 * Handle any address family spec that
784 * immediately follows and potentially
785 * recreate the socket.
787 nafp = af_getbyname(*argv);
797 * Look for a normal parameter.
803 * Not a recognized command, choose between setting
804 * the interface address and the dst address.
806 p = (setaddr ? &setifdstaddr_cmd : &setifaddr_cmd);
808 if (p->c_parameter == NEXTARG && p->c_u.c_func) {
810 errx(1, "'%s' requires argument",
812 p->c_u.c_func(argv[1], 0, s, afp);
814 } else if (p->c_parameter == OPTARG && p->c_u.c_func) {
815 p->c_u.c_func(argv[1], 0, s, afp);
818 } else if (p->c_parameter == NEXTARG2 && p->c_u.c_func2) {
820 errx(1, "'%s' requires 2 arguments",
822 p->c_u.c_func2(argv[1], argv[2], s, afp);
823 argc -= 2, argv += 2;
824 } else if (p->c_u.c_func)
825 p->c_u.c_func(*argv, p->c_parameter, s, afp);
830 * Do any post argument processing required by the address family.
832 if (afp->af_postproc != NULL)
833 afp->af_postproc(s, afp);
835 * Do deferred callbacks registered while processing
836 * command-line arguments.
838 for (cb = callbacks; cb != NULL; cb = cb->cb_next)
839 cb->cb_func(s, cb->cb_arg);
841 * Do deferred operations.
844 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
845 warnx("interface %s cannot change %s addresses!",
852 strlcpy(((struct ifreq *)afp->af_ridreq)->ifr_name, name,
853 sizeof ifr.ifr_name);
854 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq);
856 if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
857 /* means no previous address for interface */
859 Perror("ioctl (SIOCDIFADDR)");
863 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
864 warnx("interface %s cannot change %s addresses!",
869 if (newaddr && (setaddr || setmask)) {
870 strlcpy(((struct ifreq *)afp->af_addreq)->ifr_name, name,
871 sizeof ifr.ifr_name);
872 if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0)
873 Perror("ioctl (SIOCAIFADDR)");
882 setifaddr(const char *addr, int param, int s, const struct afswtch *afp)
884 if (afp->af_getaddr == NULL)
887 * Delay the ioctl to set the interface addr until flags are all set.
888 * The address interpretation may depend on the flags,
889 * and the flags may change when the address is set.
892 if (doalias == 0 && afp->af_af != AF_LINK)
894 afp->af_getaddr(addr, (doalias >= 0 ? ADDR : RIDADDR));
898 settunnel(const char *src, const char *dst, int s, const struct afswtch *afp)
900 struct addrinfo *srcres, *dstres;
903 if (afp->af_settunnel == NULL) {
904 warn("address family %s does not support tunnel setup",
909 if ((ecode = getaddrinfo(src, NULL, NULL, &srcres)) != 0)
910 errx(1, "error in parsing address string: %s",
911 gai_strerror(ecode));
913 if ((ecode = getaddrinfo(dst, NULL, NULL, &dstres)) != 0)
914 errx(1, "error in parsing address string: %s",
915 gai_strerror(ecode));
917 if (srcres->ai_addr->sa_family != dstres->ai_addr->sa_family)
919 "source and destination address families do not match");
921 afp->af_settunnel(s, srcres, dstres);
923 freeaddrinfo(srcres);
924 freeaddrinfo(dstres);
929 deletetunnel(const char *vname, int param, int s, const struct afswtch *afp)
932 if (ioctl(s, SIOCDIFPHYADDR, &ifr) < 0)
933 err(1, "SIOCDIFPHYADDR");
938 setifvnet(const char *jname, int dummy __unused, int s,
939 const struct afswtch *afp)
943 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
944 my_ifr.ifr_jid = jail_getid(jname);
945 if (my_ifr.ifr_jid < 0)
946 errx(1, "%s", jail_errmsg);
947 if (ioctl(s, SIOCSIFVNET, &my_ifr) < 0)
948 err(1, "SIOCSIFVNET");
952 setifrvnet(const char *jname, int dummy __unused, int s,
953 const struct afswtch *afp)
957 memcpy(&my_ifr, &ifr, sizeof(my_ifr));
958 my_ifr.ifr_jid = jail_getid(jname);
959 if (my_ifr.ifr_jid < 0)
960 errx(1, "%s", jail_errmsg);
961 if (ioctl(s, SIOCSIFRVNET, &my_ifr) < 0)
962 err(1, "SIOCSIFRVNET(%d, %s)", my_ifr.ifr_jid, my_ifr.ifr_name);
967 setifnetmask(const char *addr, int dummy __unused, int s,
968 const struct afswtch *afp)
970 if (afp->af_getaddr != NULL) {
972 afp->af_getaddr(addr, MASK);
977 setifbroadaddr(const char *addr, int dummy __unused, int s,
978 const struct afswtch *afp)
980 if (afp->af_getaddr != NULL)
981 afp->af_getaddr(addr, DSTADDR);
985 notealias(const char *addr, int param, int s, const struct afswtch *afp)
987 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
988 if (setaddr && doalias == 0 && param < 0)
989 if (afp->af_addreq != NULL && afp->af_ridreq != NULL)
990 bcopy((caddr_t)rqtosa(af_addreq),
991 (caddr_t)rqtosa(af_ridreq),
992 rqtosa(af_addreq)->sa_len);
1004 setifdstaddr(const char *addr, int param __unused, int s,
1005 const struct afswtch *afp)
1007 if (afp->af_getaddr != NULL)
1008 afp->af_getaddr(addr, DSTADDR);
1012 * Note: doing an SIOCIGIFFLAGS scribbles on the union portion
1013 * of the ifreq structure, which may confuse other parts of ifconfig.
1014 * Make a private copy so we can avoid that.
1017 setifflags(const char *vname, int value, int s, const struct afswtch *afp)
1019 struct ifreq my_ifr;
1022 memset(&my_ifr, 0, sizeof(my_ifr));
1023 (void) strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name));
1025 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0) {
1026 Perror("ioctl (SIOCGIFFLAGS)");
1029 flags = (my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16);
1036 my_ifr.ifr_flags = flags & 0xffff;
1037 my_ifr.ifr_flagshigh = flags >> 16;
1038 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)
1043 setifcap(const char *vname, int value, int s, const struct afswtch *afp)
1047 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0) {
1048 Perror("ioctl (SIOCGIFCAP)");
1051 flags = ifr.ifr_curcap;
1057 flags &= ifr.ifr_reqcap;
1058 ifr.ifr_reqcap = flags;
1059 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0)
1064 setifmetric(const char *val, int dummy __unused, int s,
1065 const struct afswtch *afp)
1067 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1068 ifr.ifr_metric = atoi(val);
1069 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
1070 err(1, "ioctl SIOCSIFMETRIC (set metric)");
1074 setifmtu(const char *val, int dummy __unused, int s,
1075 const struct afswtch *afp)
1077 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1078 ifr.ifr_mtu = atoi(val);
1079 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
1080 err(1, "ioctl SIOCSIFMTU (set mtu)");
1084 setifpcp(const char *val, int arg __unused, int s, const struct afswtch *afp)
1089 ul = strtoul(val, &endp, 0);
1091 errx(1, "invalid value for pcp");
1093 errx(1, "value for pcp out of range");
1094 ifr.ifr_lan_pcp = ul;
1095 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1096 err(1, "SIOCSLANPCP");
1100 disableifpcp(const char *val, int arg __unused, int s,
1101 const struct afswtch *afp)
1104 ifr.ifr_lan_pcp = IFNET_PCP_NONE;
1105 if (ioctl(s, SIOCSLANPCP, (caddr_t)&ifr) == -1)
1106 err(1, "SIOCSLANPCP");
1110 setifname(const char *val, int dummy __unused, int s,
1111 const struct afswtch *afp)
1115 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1117 newname = strdup(val);
1118 if (newname == NULL)
1119 err(1, "no memory to set ifname");
1120 ifr.ifr_data = newname;
1121 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) {
1123 err(1, "ioctl SIOCSIFNAME (set name)");
1126 strlcpy(name, newname, sizeof(name));
1132 setifdescr(const char *val, int dummy __unused, int s,
1133 const struct afswtch *afp)
1137 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1139 ifr.ifr_buffer.length = strlen(val) + 1;
1140 if (ifr.ifr_buffer.length == 1) {
1141 ifr.ifr_buffer.buffer = newdescr = NULL;
1142 ifr.ifr_buffer.length = 0;
1144 newdescr = strdup(val);
1145 ifr.ifr_buffer.buffer = newdescr;
1146 if (newdescr == NULL) {
1147 warn("no memory to set ifdescr");
1152 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0)
1153 err(1, "ioctl SIOCSIFDESCR (set descr)");
1160 unsetifdescr(const char *val, int value, int s, const struct afswtch *afp)
1163 setifdescr("", 0, s, 0);
1167 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\7RUNNING" \
1168 "\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
1169 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP"
1172 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
1173 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \
1174 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \
1175 "\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP"
1178 * Print the status of the interface. If an address family was
1179 * specified, show only it; otherwise, show them all.
1182 status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
1183 struct ifaddrs *ifa)
1185 struct ifaddrs *ift;
1191 ifr.ifr_addr.sa_family = AF_LOCAL;
1194 ifr.ifr_addr.sa_family =
1195 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af;
1197 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1199 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
1201 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
1203 printf("%s: ", name);
1204 printb("flags", ifa->ifa_flags, IFFBITS);
1205 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1)
1206 printf(" metric %d", ifr.ifr_metric);
1207 if (ioctl(s, SIOCGIFMTU, &ifr) != -1)
1208 printf(" mtu %d", ifr.ifr_mtu);
1212 if ((descr = reallocf(descr, descrlen)) != NULL) {
1213 ifr.ifr_buffer.buffer = descr;
1214 ifr.ifr_buffer.length = descrlen;
1215 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) {
1216 if (ifr.ifr_buffer.buffer == descr) {
1217 if (strlen(descr) > 0)
1218 printf("\tdescription: %s\n",
1220 } else if (ifr.ifr_buffer.length > descrlen) {
1221 descrlen = ifr.ifr_buffer.length;
1226 warn("unable to allocate memory for interface"
1231 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) {
1232 if (ifr.ifr_curcap != 0) {
1233 printb("\toptions", ifr.ifr_curcap, IFCAPBITS);
1236 if (supmedia && ifr.ifr_reqcap != 0) {
1237 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS);
1244 for (ift = ifa; ift != NULL; ift = ift->ifa_next) {
1245 if (ift->ifa_addr == NULL)
1247 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0)
1250 const struct afswtch *p;
1251 p = af_getbyfamily(ift->ifa_addr->sa_family);
1252 if (p != NULL && p->af_status != NULL)
1253 p->af_status(s, ift);
1254 } else if (afp->af_af == ift->ifa_addr->sa_family)
1255 afp->af_status(s, ift);
1258 if (allfamilies || afp->af_af == AF_LINK) {
1259 const struct afswtch *lafp;
1262 * Hack; the link level address is received separately
1263 * from the routing information so any address is not
1264 * handled above. Cobble together an entry and invoke
1265 * the status method specially.
1267 lafp = af_getbyname("lladdr");
1269 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl;
1270 lafp->af_status(s, &info);
1276 else if (afp->af_other_status != NULL)
1277 afp->af_other_status(s);
1279 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
1280 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
1281 printf("%s", ifs.ascii);
1284 sfp_status(s, &ifr, verbose);
1291 tunnel_status(int s)
1293 af_all_tunnel_status(s);
1297 Perror(const char *cmd)
1302 errx(1, "%s: no such interface", cmd);
1306 errx(1, "%s: permission denied", cmd);
1315 * Print a value a la the %b format of the kernel's printf
1318 printb(const char *s, unsigned v, const char *bits)
1323 if (bits && *bits == 8)
1324 printf("%s=%o", s, v);
1326 printf("%s=%x", s, v);
1330 while ((i = *bits++) != '\0') {
1331 if (v & (1 << (i-1))) {
1335 for (; (c = *bits) > 32; bits++)
1338 for (; *bits > 32; bits++)
1346 print_vhid(const struct ifaddrs *ifa, const char *s)
1348 struct if_data *ifd;
1350 if (ifa->ifa_data == NULL)
1353 ifd = ifa->ifa_data;
1354 if (ifd->ifi_vhid == 0)
1357 printf("vhid %d ", ifd->ifi_vhid);
1361 ifmaybeload(const char *name)
1363 #define MOD_PREFIX_LEN 3 /* "if_" */
1364 struct module_stat mstat;
1366 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp;
1369 /* loading suppressed by the user */
1373 /* trim the interface number off the end */
1374 strlcpy(ifname, name, sizeof(ifname));
1375 for (dp = ifname; *dp != 0; dp++)
1381 /* turn interface and unit into module name */
1382 strlcpy(ifkind, "if_", sizeof(ifkind));
1383 strlcat(ifkind, ifname, sizeof(ifkind));
1385 /* scan files in kernel */
1386 mstat.version = sizeof(struct module_stat);
1387 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
1388 /* scan modules in file */
1389 for (modid = kldfirstmod(fileid); modid > 0;
1390 modid = modfnext(modid)) {
1391 if (modstat(modid, &mstat) < 0)
1393 /* strip bus name if present */
1394 if ((cp = strchr(mstat.name, '/')) != NULL) {
1399 /* already loaded? */
1400 if (strcmp(ifname, cp) == 0 ||
1401 strcmp(ifkind, cp) == 0)
1407 * Try to load the module. But ignore failures, because ifconfig can't
1408 * infer the names of all drivers (eg mlx4en(4)).
1410 (void) kldload(ifkind);
1413 static struct cmd basic_cmds[] = {
1414 DEF_CMD("up", IFF_UP, setifflags),
1415 DEF_CMD("down", -IFF_UP, setifflags),
1416 DEF_CMD("arp", -IFF_NOARP, setifflags),
1417 DEF_CMD("-arp", IFF_NOARP, setifflags),
1418 DEF_CMD("debug", IFF_DEBUG, setifflags),
1419 DEF_CMD("-debug", -IFF_DEBUG, setifflags),
1420 DEF_CMD_ARG("description", setifdescr),
1421 DEF_CMD_ARG("descr", setifdescr),
1422 DEF_CMD("-description", 0, unsetifdescr),
1423 DEF_CMD("-descr", 0, unsetifdescr),
1424 DEF_CMD("promisc", IFF_PPROMISC, setifflags),
1425 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags),
1426 DEF_CMD("add", IFF_UP, notealias),
1427 DEF_CMD("alias", IFF_UP, notealias),
1428 DEF_CMD("-alias", -IFF_UP, notealias),
1429 DEF_CMD("delete", -IFF_UP, notealias),
1430 DEF_CMD("remove", -IFF_UP, notealias),
1432 #define EN_SWABIPS 0x1000
1433 DEF_CMD("swabips", EN_SWABIPS, setifflags),
1434 DEF_CMD("-swabips", -EN_SWABIPS, setifflags),
1436 DEF_CMD_ARG("netmask", setifnetmask),
1437 DEF_CMD_ARG("metric", setifmetric),
1438 DEF_CMD_ARG("broadcast", setifbroadaddr),
1439 DEF_CMD_ARG2("tunnel", settunnel),
1440 DEF_CMD("-tunnel", 0, deletetunnel),
1441 DEF_CMD("deletetunnel", 0, deletetunnel),
1443 DEF_CMD_ARG("vnet", setifvnet),
1444 DEF_CMD_ARG("-vnet", setifrvnet),
1446 DEF_CMD("link0", IFF_LINK0, setifflags),
1447 DEF_CMD("-link0", -IFF_LINK0, setifflags),
1448 DEF_CMD("link1", IFF_LINK1, setifflags),
1449 DEF_CMD("-link1", -IFF_LINK1, setifflags),
1450 DEF_CMD("link2", IFF_LINK2, setifflags),
1451 DEF_CMD("-link2", -IFF_LINK2, setifflags),
1452 DEF_CMD("monitor", IFF_MONITOR, setifflags),
1453 DEF_CMD("-monitor", -IFF_MONITOR, setifflags),
1454 DEF_CMD("staticarp", IFF_STATICARP, setifflags),
1455 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags),
1456 DEF_CMD("rxcsum6", IFCAP_RXCSUM_IPV6, setifcap),
1457 DEF_CMD("-rxcsum6", -IFCAP_RXCSUM_IPV6, setifcap),
1458 DEF_CMD("txcsum6", IFCAP_TXCSUM_IPV6, setifcap),
1459 DEF_CMD("-txcsum6", -IFCAP_TXCSUM_IPV6, setifcap),
1460 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap),
1461 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap),
1462 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap),
1463 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap),
1464 DEF_CMD("netcons", IFCAP_NETCONS, setifcap),
1465 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap),
1466 DEF_CMD_ARG("pcp", setifpcp),
1467 DEF_CMD("-pcp", 0, disableifpcp),
1468 DEF_CMD("polling", IFCAP_POLLING, setifcap),
1469 DEF_CMD("-polling", -IFCAP_POLLING, setifcap),
1470 DEF_CMD("tso6", IFCAP_TSO6, setifcap),
1471 DEF_CMD("-tso6", -IFCAP_TSO6, setifcap),
1472 DEF_CMD("tso4", IFCAP_TSO4, setifcap),
1473 DEF_CMD("-tso4", -IFCAP_TSO4, setifcap),
1474 DEF_CMD("tso", IFCAP_TSO, setifcap),
1475 DEF_CMD("-tso", -IFCAP_TSO, setifcap),
1476 DEF_CMD("toe", IFCAP_TOE, setifcap),
1477 DEF_CMD("-toe", -IFCAP_TOE, setifcap),
1478 DEF_CMD("lro", IFCAP_LRO, setifcap),
1479 DEF_CMD("-lro", -IFCAP_LRO, setifcap),
1480 DEF_CMD("wol", IFCAP_WOL, setifcap),
1481 DEF_CMD("-wol", -IFCAP_WOL, setifcap),
1482 DEF_CMD("wol_ucast", IFCAP_WOL_UCAST, setifcap),
1483 DEF_CMD("-wol_ucast", -IFCAP_WOL_UCAST, setifcap),
1484 DEF_CMD("wol_mcast", IFCAP_WOL_MCAST, setifcap),
1485 DEF_CMD("-wol_mcast", -IFCAP_WOL_MCAST, setifcap),
1486 DEF_CMD("wol_magic", IFCAP_WOL_MAGIC, setifcap),
1487 DEF_CMD("-wol_magic", -IFCAP_WOL_MAGIC, setifcap),
1488 DEF_CMD("txrtlmt", IFCAP_TXRTLMT, setifcap),
1489 DEF_CMD("-txrtlmt", -IFCAP_TXRTLMT, setifcap),
1490 DEF_CMD("hwrxtstmp", IFCAP_HWRXTSTMP, setifcap),
1491 DEF_CMD("-hwrxtstmp", -IFCAP_HWRXTSTMP, setifcap),
1492 DEF_CMD("normal", -IFF_LINK0, setifflags),
1493 DEF_CMD("compress", IFF_LINK0, setifflags),
1494 DEF_CMD("noicmp", IFF_LINK1, setifflags),
1495 DEF_CMD_ARG("mtu", setifmtu),
1496 DEF_CMD_ARG("name", setifname),
1499 static __constructor void
1504 for (i = 0; i < nitems(basic_cmds); i++)
1505 cmd_register(&basic_cmds[i]);