2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sbin/ifconfig/ifconfig.c,v 1.113.2.4 2006/02/09 10:48:43 yar Exp $
32 #include <sys/param.h>
33 #include <sys/ioctl.h>
34 #include <sys/socket.h>
35 #include <sys/sysctl.h>
37 #include <sys/module.h>
38 #include <sys/linker.h>
39 #include <sys/cdefs.h>
40 #include <sys/queue.h>
42 #include <net/ethernet.h>
44 #include <net/if_var.h>
45 #include <net/if_dl.h>
46 #include <net/if_types.h>
47 #include <net/route.h>
50 #include <netinet/in.h>
51 #include <netinet/in_var.h>
52 #include <arpa/inet.h>
70 * Since "struct ifreq" is composed of various union members, callers
71 * should pay special attention to interpret the value.
72 * (.e.g. little/big endian difference in the structure.)
80 int printkeys = 0; /* Print keying material for interfaces. */
81 int printifname = 0; /* Print the name of the created interface. */
83 char *f_inet, *f_inet6, *f_ether, *f_addr; /* Formatter strings */
85 static bool group_member(const char *ifname, const char *match,
87 static int ifconfig(int argc, char *const *argv, int iscreate,
88 const struct afswtch *afp);
89 static void status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
91 static void tunnel_status(int s);
92 static void usage(void) __dead2;
94 static int getifflags(const char *ifname, int us);
95 static struct afswtch *af_getbyname(const char *name);
96 static struct afswtch *af_getbyfamily(int af);
97 static void af_other_status(int);
98 static void printifnamemaybe(void);
99 static void freeformat(void);
100 static void setformat(char *input);
102 static struct option *opts = NULL;
103 static char *descr = NULL;
104 static size_t descrlen = 64;
105 static int clearaddr;
111 struct ifa_order_elt {
115 TAILQ_ENTRY(ifa_order_elt) link;
117 TAILQ_HEAD(ifa_queue, ifa_order_elt);
119 static int calcorders(struct ifaddrs *ifa, struct ifa_queue *q);
120 static int cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b,
121 struct ifa_queue *q);
122 typedef int (*ifaddrs_cmp)(struct ifaddrs *, struct ifaddrs *, struct ifa_queue *);
123 static struct ifaddrs *sortifaddrs(struct ifaddrs *list, ifaddrs_cmp compare,
124 struct ifa_queue *q);
128 opt_register(struct option *p)
140 /* XXX not right but close enough for now */
142 for (p = opts; p != NULL; p = p->next) {
143 strlcat(options, p->opt_usage, sizeof(options));
144 strlcat(options, " ", sizeof(options));
148 "usage: ifconfig %s[-n] [-f type:format] interface address_family\n"
149 " [address [dest_address]] [parameters]\n"
150 " ifconfig [-n] interface create\n"
151 " ifconfig [-n] interface destroy\n"
152 " ifconfig -a %s[-G nogroup] [-d | -u] [-m] [-v] [address_family]\n"
153 " ifconfig -l [-d | -u] [address_family]\n"
154 " ifconfig %s[-d | -u] [-m] [-v]\n",
155 options, options, options);
160 calcorders(struct ifaddrs *ifa, struct ifa_queue *q)
162 struct ifaddrs *prev;
163 struct ifa_order_elt *cur;
164 unsigned int ord, af, ifa_ord;
171 while (ifa != NULL) {
173 strcmp(ifa->ifa_name, prev->ifa_name) != 0) {
174 cur = calloc(1, sizeof(*cur));
178 TAILQ_INSERT_TAIL(q, cur, link);
179 cur->if_order = ifa_ord++;
185 af = ifa->ifa_addr->sa_family;
187 if (af < nitems(cur->af_orders) &&
188 cur->af_orders[af] == 0)
189 cur->af_orders[af] = ++ord;
200 cmpifaddrs(struct ifaddrs *a, struct ifaddrs *b, struct ifa_queue *q)
202 struct ifa_order_elt *cur, *e1, *e2;
203 unsigned int af1, af2;
207 if (strcmp(a->ifa_name, b->ifa_name) != 0) {
208 TAILQ_FOREACH(cur, q, link) {
209 if (e1 != NULL && e2 != NULL)
212 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0)
214 else if (strcmp(cur->ifa->ifa_name, b->ifa_name) == 0)
218 if (e1 == NULL || e2 == NULL)
221 return (e1->if_order - e2->if_order);
223 } else if (a->ifa_addr != NULL && b->ifa_addr != NULL) {
224 TAILQ_FOREACH(cur, q, link) {
225 if (strcmp(cur->ifa->ifa_name, a->ifa_name) == 0) {
234 af1 = a->ifa_addr->sa_family;
235 af2 = b->ifa_addr->sa_family;
237 if (af1 < nitems(e1->af_orders) && af2 < nitems(e1->af_orders))
238 return (e1->af_orders[af1] - e1->af_orders[af2]);
244 static struct ifaddrs *
245 sortifaddrs(struct ifaddrs *list, ifaddrs_cmp compare, struct ifa_queue *q)
247 struct ifaddrs *right, *temp, *last, *result, *next, *tail;
249 right = temp = last = list;
250 result = next = tail = NULL;
252 if (list == NULL || list->ifa_next == NULL)
255 while (temp != NULL && temp->ifa_next != NULL) {
257 right = right->ifa_next;
258 temp = temp->ifa_next->ifa_next;
261 last->ifa_next = NULL;
263 list = sortifaddrs(list, compare, q);
264 right = sortifaddrs(right, compare, q);
266 while (list != NULL || right != NULL) {
269 list = list->ifa_next;
270 } else if (list == NULL) {
272 right = right->ifa_next;
273 } else if (compare(list, right, q) <= 0) {
275 list = list->ifa_next;
278 right = right->ifa_next;
284 tail->ifa_next = next;
293 printifnamemaybe(void)
296 printf("%s\n", name);
313 setformat(char *input)
315 char *formatstr, *category, *modifier;
318 formatstr = strdup(input);
319 if (formatstr == NULL)
320 err(1, "no memory to set format");
322 while ((category = strsep(&formatstr, ",")) != NULL) {
323 modifier = strchr(category, ':');
324 if (modifier == NULL || modifier[1] == '\0') {
325 warnx("skip invalid format specification: %s\n",
334 if (strcmp(category, "addr") == 0)
336 else if (strcmp(category, "ether") == 0)
338 else if (strcmp(category, "inet") == 0)
340 else if (strcmp(category, "inet6") == 0)
344 *fp = strdup(modifier);
355 main(int argc, char *argv[])
357 int c, all, namesonly, downonly, uponly;
359 const struct afswtch *afp = NULL;
360 const struct sockaddr_dl *sdl;
361 const char *ifname, *matchgroup, *nogroup;
362 struct ifa_order_elt *cur, *tmp;
363 struct ifa_queue q = TAILQ_HEAD_INITIALIZER(q);
364 struct ifaddrs *ifap, *sifap, *ifa;
368 char *envformat, *cp;
371 all = downonly = uponly = namesonly = verbose = noload = 0;
372 f_inet = f_inet6 = f_ether = f_addr = NULL;
373 matchgroup = nogroup = NULL;
376 * Ensure we print interface name when expected to,
377 * even if we terminate early due to error.
379 atexit(printifnamemaybe);
381 envformat = getenv("IFCONFIG_FORMAT");
382 if (envformat != NULL)
383 setformat(envformat);
385 /* Parse leading line options */
386 strlcpy(options, "adf:G:klmnuv", sizeof(options));
387 for (p = opts; p != NULL; p = p->next)
388 strlcat(options, p->opt, sizeof(options));
389 while ((c = getopt(argc, argv, options)) != -1) {
391 case 'a': /* scan all interfaces */
394 case 'd': /* restrict scan to "down" interfaces */
408 case 'l': /* scan interface names only */
411 case 'm': /* show media choices in status */
414 case 'n': /* suppress module loading */
417 case 'u': /* restrict scan to "up" interfaces */
428 /* FALLTHROUGH (for ifgroup) */
430 for (p = opts; p != NULL; p = p->next)
431 if (p->opt[0] == c) {
443 /* -l cannot be used with -a or -m */
444 if (namesonly && (all || supmedia))
448 if (uponly && downonly)
451 /* no arguments is equivalent to '-a' */
452 if (!namesonly && argc < 1)
455 /* -a and -l allow an address family arg to limit the output */
456 if (all || namesonly) {
463 afp = af_getbyname(*argv);
466 if (afp->af_name != NULL)
468 /* leave with afp non-zero */
471 /* not listing, need an argument */
478 /* check and maybe load support for this interface */
481 ifindex = if_nametoindex(ifname);
484 * NOTE: We must special-case the `create' command
485 * right here as we would otherwise fail when trying
486 * to find the interface.
488 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
489 strcmp(argv[0], "plumb") == 0)) {
490 iflen = strlcpy(name, ifname, sizeof(name));
491 if (iflen >= sizeof(name))
492 errx(1, "%s: cloning name too long",
494 ifconfig(argc, argv, 1, NULL);
497 errx(1, "interface %s does not exist", ifname);
500 * Do not allow to use `create` command as hostname
501 * if address family is not specified.
503 if (argc > 0 && (strcmp(argv[0], "create") == 0 ||
504 strcmp(argv[0], "plumb") == 0)) {
506 errx(1, "interface %s already exists",
513 /* Check for address family */
515 afp = af_getbyname(*argv);
521 * Check for a requested configuration action on a single interface,
522 * which doesn't require building, sorting, and searching the entire
523 * system address list.
525 if (argc > 0 && ifname != NULL) {
526 iflen = strlcpy(name, ifname, sizeof(name));
527 if (iflen >= sizeof(name))
528 errx(1, "%s: cloning name too long", ifname);
530 flags = getifflags(name, -1);
531 if (!((downonly && (flags & IFF_UP) != 0) ||
532 (uponly && (flags & IFF_UP) == 0))) {
533 ifconfig(argc, argv, 0, afp);
539 if (getifaddrs(&ifap) != 0)
540 err(1, "getifaddrs");
541 if (calcorders(ifap, &q) != 0)
542 err(1, "calcorders");
543 sifap = sortifaddrs(ifap, cmpifaddrs, &q);
545 TAILQ_FOREACH_MUTABLE(cur, &q, link, tmp)
550 for (ifa = sifap; ifa != NULL; ifa = ifa->ifa_next) {
551 memset(&paifr, 0, sizeof(paifr));
552 strlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name));
553 if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
554 memcpy(&paifr.ifr_addr, ifa->ifa_addr,
555 ifa->ifa_addr->sa_len);
558 if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
560 if (cp != NULL && strcmp(cp, ifa->ifa_name) == 0)
562 iflen = strlcpy(name, ifa->ifa_name, sizeof(name));
563 if (iflen >= sizeof(name)) {
564 warnx("%s: interface name too long, skipping",
570 if (downonly && (ifa->ifa_flags & IFF_UP) != 0)
572 if (uponly && (ifa->ifa_flags & IFF_UP) == 0)
574 if (!group_member(ifa->ifa_name, matchgroup, nogroup))
577 if (ifa->ifa_addr->sa_family == AF_LINK)
578 sdl = (const struct sockaddr_dl *)ifa->ifa_addr;
582 /* Are we just listing the interfaces? */
585 afp->af_af != AF_LINK ||
586 (sdl != NULL && sdl->sdl_type == IFT_ETHER)) {
587 printf("%s%s", (ifindex > 0 ? " " : ""), name);
594 ifconfig(argc, argv, 0, afp);
596 status(afp, sdl, ifa);
610 * Returns true if an interface should be listed because any its groups
611 * matches shell pattern "match" and none of groups matches pattern "nomatch".
612 * If any pattern is NULL, corresponding condition is skipped.
615 group_member(const char *ifname, const char *match, const char *nomatch)
617 static int sock = -1;
619 struct ifgroupreq ifgr;
622 bool matched, nomatched;
625 if (match == NULL && nomatch == NULL)
630 memset(&ifgr, 0, sizeof(ifgr));
631 strlcpy(ifgr.ifgr_name, ifname, sizeof(ifgr.ifgr_name));
633 /* The socket is opened once. Let _exit() close it. */
635 sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
637 errx(1, "%s: socket(AF_LOCAL,SOCK_DGRAM)", __func__);
640 /* Determine amount of memory for the list of groups. */
641 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1) {
642 if (errno == EINVAL || errno == ENOTTY)
645 errx(1, "%s: SIOCGIFGROUP", __func__);
648 /* Obtain the list of groups. */
651 (struct ifg_req *)calloc(len / sizeof(*ifg), sizeof(*ifg));
652 if (ifgr.ifgr_groups == NULL)
653 errx(1, "%s: no memory", __func__);
654 if (ioctl(sock, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
655 errx(1, "%s: SIOCGIFGROUP", __func__);
657 /* Perform matching. */
660 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(*ifg); ifg++) {
661 len -= sizeof(struct ifg_req);
663 matched |= !fnmatch(match, ifg->ifgrq_group, 0);
665 nomatched &= fnmatch(nomatch, ifg->ifgrq_group, 0);
668 if (match && !nomatch)
670 if (!match && nomatch)
672 return (matched && nomatched);
676 static struct afswtch *afs = NULL;
679 af_register(struct afswtch *p)
685 static struct afswtch *
686 af_getbyname(const char *name)
690 for (afp = afs; afp != NULL; afp = afp->af_next)
691 if (strcmp(afp->af_name, name) == 0)
696 static struct afswtch *
697 af_getbyfamily(int af)
701 for (afp = afs; afp != NULL; afp = afp->af_next)
702 if (afp->af_af == af)
708 af_other_status(int s)
711 uint8_t afmask[howmany(AF_MAX, NBBY)];
713 memset(afmask, 0, sizeof(afmask));
714 for (afp = afs; afp != NULL; afp = afp->af_next) {
715 if (afp->af_other_status == NULL)
717 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
719 afp->af_other_status(s);
720 setbit(afmask, afp->af_af);
725 af_all_tunnel_status(int s)
728 uint8_t afmask[howmany(AF_MAX, NBBY)];
730 memset(afmask, 0, sizeof(afmask));
731 for (afp = afs; afp != NULL; afp = afp->af_next) {
732 if (afp->af_status_tunnel == NULL)
734 if (afp->af_af != AF_UNSPEC && isset(afmask, afp->af_af))
736 afp->af_status_tunnel(s);
737 setbit(afmask, afp->af_af);
741 static struct cmd *cmds = NULL;
744 cmd_register(struct cmd *p)
750 static const struct cmd *
751 cmd_lookup(const char *name, int iscreate)
755 for (p = cmds; p != NULL; p = p->c_next) {
756 if (strcmp(name, p->c_name) == 0) {
771 callback_func *cb_func;
773 struct callback *cb_next;
775 static struct callback *callbacks = NULL;
778 callback_register(callback_func *func, void *arg)
782 cb = malloc(sizeof(struct callback));
784 errx(1, "unable to allocate memory for callback");
787 cb->cb_next = callbacks;
791 /* specially-handled commands */
792 static void setifaddr(const char *, int, int, const struct afswtch *);
793 static const struct cmd setifaddr_cmd = DEF_CMD("ifaddr", 0, setifaddr);
795 static void setifdstaddr(const char *, int, int, const struct afswtch *);
796 static const struct cmd setifdstaddr_cmd =
797 DEF_CMD("ifdstaddr", 0, setifdstaddr);
800 ifconfig(int argc, char *const *argv, int iscreate,
801 const struct afswtch *uafp)
803 const struct afswtch *afp, *nafp;
807 strlcpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
808 afp = uafp != NULL ? uafp : af_getbyname("inet");
810 ifr.ifr_addr.sa_family =
811 afp->af_af == AF_LINK || afp->af_af == AF_UNSPEC ?
812 AF_LOCAL : afp->af_af;
814 if ((s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0)) < 0 &&
815 (uafp != NULL || errno != EAFNOSUPPORT ||
816 (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0))
817 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
822 p = cmd_lookup(*argv, iscreate);
824 if (iscreate && p == NULL) {
826 * Push the clone create callback so the new
827 * device is created and can be used for any
828 * remaining arguments.
832 errx(1, "internal error, no callback");
833 callbacks = cb->cb_next;
834 cb->cb_func(s, cb->cb_arg);
838 * After cloning, make sure we have an up-to-date name
841 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
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_u.c_func || p->c_u.c_func2) {
870 if (p->c_parameter == NEXTARG) {
872 errx(1, "'%s' requires argument",
874 p->c_u.c_func(argv[1], 0, s, afp);
876 } else if (p->c_parameter == OPTARG) {
877 p->c_u.c_func(argv[1], 0, s, afp);
880 } else if (p->c_parameter == NEXTARG2) {
882 errx(1, "'%s' requires 2 arguments",
884 p->c_u.c_func2(argv[1], argv[2], s, afp);
885 argc -= 2, argv += 2;
887 p->c_u.c_func(*argv, p->c_parameter, s, afp);
893 * Do any post argument processing required by the address family.
895 if (afp->af_postproc != NULL)
896 afp->af_postproc(s, afp);
898 * Do deferred callbacks registered while processing
899 * command-line arguments.
901 for (cb = callbacks; cb != NULL; cb = cb->cb_next)
902 cb->cb_func(s, cb->cb_arg);
904 * Do deferred operations.
907 if (afp->af_ridreq == NULL || afp->af_difaddr == 0) {
908 warnx("interface %s cannot change %s addresses!",
915 strlcpy(afp->af_ridreq, name, sizeof ifr.ifr_name);
916 ret = ioctl(s, afp->af_difaddr, afp->af_ridreq);
918 if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
919 /* means no previous address for interface */
921 Perror("ioctl (SIOCDIFADDR)");
925 if (afp->af_addreq == NULL || afp->af_aifaddr == 0) {
926 warnx("interface %s cannot change %s addresses!",
931 if (newaddr && (setaddr || setmask)) {
932 strlcpy(afp->af_addreq, name, 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");
998 setifnetmask(const char *addr, int dummy __unused, int s,
999 const struct afswtch *afp)
1001 if (afp->af_getaddr != NULL) {
1003 afp->af_getaddr(addr, MASK);
1008 setifbroadaddr(const char *addr, int dummy __unused, int s,
1009 const struct afswtch *afp)
1011 if (afp->af_getaddr != NULL)
1012 afp->af_getaddr(addr, DSTADDR);
1016 notealias(const char *addr, int param, int s, const struct afswtch *afp)
1018 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
1019 if (setaddr && doalias == 0 && param < 0)
1020 if (afp->af_addreq != NULL && afp->af_ridreq != NULL)
1021 bcopy((caddr_t)rqtosa(af_addreq),
1022 (caddr_t)rqtosa(af_ridreq),
1023 rqtosa(af_addreq)->sa_len);
1036 setifdstaddr(const char *addr, int param __unused, int s,
1037 const struct afswtch *afp)
1039 if (afp->af_getaddr != NULL)
1040 afp->af_getaddr(addr, DSTADDR);
1044 getifflags(const char *ifname, int us)
1046 struct ifreq my_ifr;
1049 memset(&my_ifr, 0, sizeof(struct ifreq));
1050 strlcpy(my_ifr.ifr_name, ifname, sizeof(my_ifr.ifr_name));
1054 if ((s = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0)
1055 err(1, "socket(family AF_LOCAL,SOCK_DGRAM)");
1058 if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&my_ifr) < 0)
1059 Perror("ioctl (SIOCGIFFLAGS)");
1064 return ((my_ifr.ifr_flags & 0xffff) | (my_ifr.ifr_flagshigh << 16));
1068 setifflags(const char *vname, int value, int s, const struct afswtch *afp)
1070 struct ifreq my_ifr;
1073 flags = getifflags(name, s);
1081 memset(&my_ifr, 0, sizeof(struct ifreq));
1082 strlcpy(my_ifr.ifr_name, name, sizeof(my_ifr.ifr_name));
1083 my_ifr.ifr_flags = flags & 0xffff;
1084 my_ifr.ifr_flagshigh = flags >> 16;
1085 if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&my_ifr) < 0)
1090 setifcap(const char *vname, int value, int s, const struct afswtch *afp)
1094 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) < 0)
1095 Perror("ioctl (SIOCGIFCAP)");
1097 flags = ifr.ifr_curcap;
1104 ifr.ifr_reqcap = flags;
1105 if (ioctl(s, SIOCSIFCAP, (caddr_t)&ifr) < 0)
1110 setifmetric(const char *val, int dummy __unused, int s,
1111 const struct afswtch *afp)
1113 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1114 ifr.ifr_metric = atoi(val);
1115 if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
1116 err(1, "ioctl SIOCSIFMETRIC (set metric)");
1120 setifmtu(const char *val, int dummy __unused, int s,
1121 const struct afswtch *afp)
1123 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1124 ifr.ifr_mtu = atoi(val);
1125 if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0)
1126 err(1, "ioctl SIOCSIFMTU (set mtu)");
1130 setiftsolen(const char *val, int dummy __unused, int s,
1131 const struct afswtch *afp)
1133 strlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
1134 ifr.ifr_tsolen = atoi(val);
1135 if (ioctl(s, SIOCSIFTSOLEN, (caddr_t)&ifr) < 0)
1136 err(1, "ioctl SIOCSIFTSOLEN (set tsolen)");
1140 setifname(const char *val, int dummy __unused, int s,
1141 const struct afswtch *afp)
1145 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1147 newname = strdup(val);
1148 if (newname == NULL)
1149 err(1, "no memory to set ifname");
1150 ifr.ifr_data = newname;
1151 if (ioctl(s, SIOCSIFNAME, (caddr_t)&ifr) < 0) {
1153 err(1, "ioctl SIOCSIFNAME (set name)");
1156 strlcpy(name, newname, sizeof(name));
1161 setifpollcpu(const char *val, int dummy __unused, int s,
1162 const struct afswtch *afp)
1164 warnx("pollcpu is deprecated, use polling or npolling instead");
1165 setifflags("npolling", IFF_NPOLLING, s, afp);
1169 setifdescr(const char *val, int dummy __unused, int s,
1170 const struct afswtch *afp __unused)
1174 ifr.ifr_buffer.length = strlen(val) + 1;
1175 if (ifr.ifr_buffer.length == 1) {
1176 ifr.ifr_buffer.buffer = newdescr = NULL;
1177 ifr.ifr_buffer.length = 0;
1179 newdescr = strdup(val);
1180 ifr.ifr_buffer.buffer = newdescr;
1181 if (newdescr == NULL) {
1182 warn("no memory to set ifdescr");
1187 if (ioctl(s, SIOCSIFDESCR, (caddr_t)&ifr) < 0)
1188 warn("ioctl (set descr)");
1194 unsetifdescr(const char *val, int dummy __unused, int s,
1195 const struct afswtch *afp __unused)
1197 setifdescr("", 0, s, 0);
1201 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6SMART\7RUNNING" \
1202 "\10NOARP\11PROMISC\12ALLMULTI\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
1203 "\20MULTICAST\22PPROMISC\23MONITOR\24STATICARP\25NPOLLING\26IDIRECT"
1206 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7RSS" \
1207 "\10VLAN_HWCSUM\11TSO"
1210 * Print the status of the interface. If an address family was
1211 * specified, show only it; otherwise, show them all.
1214 status(const struct afswtch *afp, const struct sockaddr_dl *sdl,
1215 struct ifaddrs *ifa)
1217 struct ifaddrs *ift;
1223 ifr.ifr_addr.sa_family = AF_LOCAL;
1226 ifr.ifr_addr.sa_family =
1227 afp->af_af == AF_LINK ? AF_LOCAL : afp->af_af;
1229 strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
1231 s = socket(ifr.ifr_addr.sa_family, SOCK_DGRAM, 0);
1233 err(1, "socket(family %u,SOCK_DGRAM)", ifr.ifr_addr.sa_family);
1235 printf("%s: ", name);
1236 printb("flags", ifa->ifa_flags, IFFBITS);
1237 if (ioctl(s, SIOCGIFMETRIC, &ifr) != -1)
1238 printf(" metric %d", ifr.ifr_metric);
1239 if (ioctl(s, SIOCGIFMTU, &ifr) != -1)
1240 printf(" mtu %d", ifr.ifr_mtu);
1244 if ((descr = reallocf(descr, descrlen)) != NULL) {
1245 ifr.ifr_buffer.buffer = descr;
1246 ifr.ifr_buffer.length = descrlen;
1247 if (ioctl(s, SIOCGIFDESCR, &ifr) == 0) {
1248 if (ifr.ifr_buffer.length > 1)
1249 printf("\tdescription: %s\n", descr);
1250 } else if (errno == ENOMSG) {
1252 } else if (errno == ENAMETOOLONG) {
1253 descrlen = ifr.ifr_buffer.length;
1256 warn("ioctl (get descr)");
1259 warn("unable to allocate memory for interface "
1265 if (ioctl(s, SIOCGIFCAP, (caddr_t)&ifr) == 0) {
1266 if (ifr.ifr_curcap != 0) {
1267 printb("\toptions", ifr.ifr_curcap, IFCAPBITS);
1270 if (supmedia && ifr.ifr_reqcap != 0) {
1271 printb("\tcapabilities", ifr.ifr_reqcap, IFCAPBITS);
1273 if (ifr.ifr_reqcap & IFCAP_TSO) {
1274 if (ioctl(s, SIOCGIFTSOLEN,
1275 (caddr_t)&ifr) == 0) {
1276 printf("\ttsolen %d", ifr.ifr_tsolen);
1285 for (ift = ifa; ift != NULL; ift = ift->ifa_next) {
1286 if (ift->ifa_addr == NULL)
1288 if (strcmp(ifa->ifa_name, ift->ifa_name) != 0)
1291 const struct afswtch *p;
1292 p = af_getbyfamily(ift->ifa_addr->sa_family);
1293 if (p != NULL && p->af_status != NULL)
1294 p->af_status(s, ift);
1295 } else if (afp->af_af == ift->ifa_addr->sa_family)
1296 afp->af_status(s, ift);
1299 if (allfamilies || afp->af_af == AF_LINK) {
1300 const struct afswtch *lafp;
1303 * Hack; the link level address is received separately
1304 * from the routing information so any address is not
1305 * handled above. Cobble together an entry and invoke
1306 * the status method specially.
1308 lafp = af_getbyname("lladdr");
1310 info.rti_info[RTAX_IFA] = (struct sockaddr *)sdl;
1311 lafp->af_status(s, &info);
1317 else if (afp->af_other_status != NULL)
1318 afp->af_other_status(s);
1320 strlcpy(ifs.ifs_name, name, sizeof ifs.ifs_name);
1321 if (ioctl(s, SIOCGIFSTATUS, &ifs) == 0)
1322 printf("%s", ifs.ascii);
1329 tunnel_status(int s)
1331 af_all_tunnel_status(s);
1335 Perror(const char *cmd)
1340 errx(1, "%s: no such interface", cmd);
1344 errx(1, "%s: permission denied", cmd);
1353 * Print a value a la the %pb%i format of the kernel's kprintf()
1356 printb(const char *s, unsigned v, const char *bits)
1361 if (bits && *bits == 8)
1362 printf("%s=%o", s, v);
1364 printf("%s=%x", s, v);
1368 while ((i = *bits++) != '\0') {
1369 if (v & (1 << (i-1))) {
1373 for (; (c = *bits) > 32; bits++)
1376 for (; *bits > 32; bits++)
1384 ifmaybeload(const char *name)
1386 #define MOD_PREFIX_LEN 3 /* "if_" */
1387 struct module_stat mstat;
1389 char ifkind[IFNAMSIZ + MOD_PREFIX_LEN], ifname[IFNAMSIZ], *dp;
1392 /* loading suppressed by the user */
1396 /* trim the interface number off the end */
1397 strlcpy(ifname, name, sizeof(ifname));
1398 for (dp = ifname; *dp != 0; dp++)
1404 /* turn interface and unit into module name */
1405 strlcpy(ifkind, "if_", sizeof(ifkind));
1406 strlcat(ifkind, ifname, sizeof(ifkind));
1408 /* scan files in kernel */
1409 mstat.version = sizeof(struct module_stat);
1410 for (fileid = kldnext(0); fileid > 0; fileid = kldnext(fileid)) {
1411 /* scan modules in file */
1412 for (modid = kldfirstmod(fileid); modid > 0;
1413 modid = modfnext(modid)) {
1414 if (modstat(modid, &mstat) < 0)
1416 /* strip bus name if present */
1417 if ((cp = strchr(mstat.name, '/')) != NULL) {
1422 /* already loaded? */
1423 if (strcmp(ifname, cp) == 0 ||
1424 strcmp(ifkind, cp) == 0)
1429 /* not present, we should try to load it */
1433 static struct cmd basic_cmds[] = {
1434 DEF_CMD("up", IFF_UP, setifflags),
1435 DEF_CMD("down", -IFF_UP, setifflags),
1436 DEF_CMD("arp", -IFF_NOARP, setifflags),
1437 DEF_CMD("-arp", IFF_NOARP, setifflags),
1438 DEF_CMD("debug", IFF_DEBUG, setifflags),
1439 DEF_CMD("-debug", -IFF_DEBUG, setifflags),
1440 DEF_CMD_ARG("description", setifdescr),
1441 DEF_CMD_ARG("descr", setifdescr),
1442 DEF_CMD("-description", 0, unsetifdescr),
1443 DEF_CMD("-descr", 0, unsetifdescr),
1444 DEF_CMD("promisc", IFF_PPROMISC, setifflags),
1445 DEF_CMD("-promisc", -IFF_PPROMISC, setifflags),
1446 DEF_CMD("add", IFF_UP, notealias),
1447 DEF_CMD("alias", IFF_UP, notealias),
1448 DEF_CMD("-alias", -IFF_UP, notealias),
1449 DEF_CMD("delete", -IFF_UP, notealias),
1450 DEF_CMD("remove", -IFF_UP, notealias),
1452 #define EN_SWABIPS 0x1000
1453 DEF_CMD("swabips", EN_SWABIPS, setifflags),
1454 DEF_CMD("-swabips", -EN_SWABIPS, setifflags),
1456 DEF_CMD_ARG("netmask", setifnetmask),
1457 DEF_CMD_ARG("metric", setifmetric),
1458 DEF_CMD_ARG("broadcast", setifbroadaddr),
1459 DEF_CMD_ARG2("tunnel", settunnel),
1460 DEF_CMD("-tunnel", 0, deletetunnel),
1461 DEF_CMD("deletetunnel", 0, deletetunnel),
1462 DEF_CMD("link0", IFF_LINK0, setifflags),
1463 DEF_CMD("-link0", -IFF_LINK0, setifflags),
1464 DEF_CMD("link1", IFF_LINK1, setifflags),
1465 DEF_CMD("-link1", -IFF_LINK1, setifflags),
1466 DEF_CMD("link2", IFF_LINK2, setifflags),
1467 DEF_CMD("-link2", -IFF_LINK2, setifflags),
1468 DEF_CMD("monitor", IFF_MONITOR, setifflags),
1469 DEF_CMD("-monitor", -IFF_MONITOR, setifflags),
1470 DEF_CMD("staticarp", IFF_STATICARP, setifflags),
1471 DEF_CMD("-staticarp", -IFF_STATICARP, setifflags),
1472 DEF_CMD("polling", IFF_NPOLLING, setifflags),
1473 DEF_CMD("-polling", -IFF_NPOLLING, setifflags),
1474 DEF_CMD("npolling", IFF_NPOLLING, setifflags),
1475 DEF_CMD("-npolling", -IFF_NPOLLING, setifflags),
1476 DEF_CMD("rxcsum", IFCAP_RXCSUM, setifcap),
1477 DEF_CMD("-rxcsum", -IFCAP_RXCSUM, setifcap),
1478 DEF_CMD("txcsum", IFCAP_TXCSUM, setifcap),
1479 DEF_CMD("-txcsum", -IFCAP_TXCSUM, setifcap),
1480 DEF_CMD("netcons", IFCAP_NETCONS, setifcap),
1481 DEF_CMD("-netcons", -IFCAP_NETCONS, setifcap),
1482 DEF_CMD("rss", IFCAP_RSS, setifcap),
1483 DEF_CMD("-rss", -IFCAP_RSS, setifcap),
1484 DEF_CMD("tso", IFCAP_TSO, setifcap),
1485 DEF_CMD("-tso", -IFCAP_TSO, setifcap),
1486 DEF_CMD("normal", -IFF_LINK0, setifflags),
1487 DEF_CMD("compress", IFF_LINK0, setifflags),
1488 DEF_CMD("noicmp", IFF_LINK1, setifflags),
1489 DEF_CMD_ARG("mtu", setifmtu),
1490 DEF_CMD_ARG("name", setifname),
1491 DEF_CMD_ARG("pollcpu", setifpollcpu),
1492 DEF_CMD_ARG("tsolen", setiftsolen)
1501 for (i = 0; i < nitems(basic_cmds); i++)
1502 cmd_register(&basic_cmds[i]);