2 * stolen from net-tools-1.59 and stripped down for busybox by
3 * Erik Andersen <andersen@codepoet.org>
5 * Heavily modified by Manuel Novoa III Mar 12, 2001
7 * Pruned unused code using KEEP_UNUSED define.
8 * Added print_bytes_scaled function to reduce code size.
9 * Added some (potentially) missing defines.
10 * Improved display support for -a and for a named interface.
12 * -----------------------------------------------------------
14 * ifconfig This file contains an implementation of the command
15 * that either displays or sets the characteristics of
16 * one or more of the system's networking interfaces.
18 * Version: $Id: interface.c,v 1.25 2004/08/26 21:45:21 andersen Exp $
20 * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
21 * and others. Copyright 1993 MicroWalt Corporation
23 * This program is free software; you can redistribute it
24 * and/or modify it under the terms of the GNU General
25 * Public License as published by the Free Software
26 * Foundation; either version 2 of the License, or (at
27 * your option) any later version.
29 * Patched to support 'add' and 'del' keywords for INET(4) addresses
30 * by Mrs. Brisby <mrs.brisby@nimh.org>
32 * {1.34} - 19980630 - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
33 * - gettext instead of catgets for i18n
34 * 10/1998 - Andi Kleen. Use interface list primitives.
35 * 20001008 - Bernd Eckenfels, Patch from RH for setting mtu
36 * (default AF was wrong)
39 /* #define KEEP_UNUSED */
50 * Device Hardware types.
53 #define HAVE_HWETHER 1
58 #include "inet_common.h"
66 #include <sys/ioctl.h>
67 #include <sys/types.h>
69 #include <net/if_arp.h>
72 #ifdef CONFIG_FEATURE_IPV6
73 # define HAVE_AFINET6 1
78 #define _PATH_PROCNET_DEV "/proc/net/dev"
79 #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
80 #define new(p) ((p) = xcalloc(1,sizeof(*(p))))
83 #include <net/if_slip.h>
90 * This is in linux/include/net/ipv6.h.
94 struct in6_addr ifr6_addr;
95 uint32_t ifr6_prefixlen;
96 unsigned int ifr6_ifindex;
101 #endif /* HAVE_AFINET6 */
103 /* Defines for glibc2.0 users. */
104 #ifndef SIOCSIFTXQLEN
105 #define SIOCSIFTXQLEN 0x8943
106 #define SIOCGIFTXQLEN 0x8942
109 /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
111 #define ifr_qlen ifr_ifru.ifru_mtu
114 #ifndef HAVE_TXQUEUELEN
115 #define HAVE_TXQUEUELEN 1
119 #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
122 /* This structure defines protocol families and their handlers. */
128 char *(*print) (unsigned char *);
129 char *(*sprint) (struct sockaddr *, int numeric);
130 int (*input) (int type, char *bufp, struct sockaddr *);
131 void (*herror) (char *text);
132 int (*rprint) (int options);
133 int (*rinput) (int typ, int ext, char **argv);
136 int (*getmask) (char *src, struct sockaddr * mask, char *name);
145 static int flag_inet;
147 static struct aftrans_t {
154 "ip", "inet", &flag_inet},
157 "ip6", "inet6", &flag_inet6},
160 "inet", "inet", &flag_inet},
163 "inet6", "inet6", &flag_inet6},
166 "unix", "unix", &flag_unx}, {
167 "tcpip", "inet", &flag_inet},
172 static char afname[256] = "";
173 #endif /* KEEP_UNUSED */
177 /* Display a UNIX domain address. */
178 static char *UNIX_print(unsigned char *ptr)
184 /* Display a UNIX domain address. */
185 static char *UNIX_sprint(struct sockaddr *sap, int numeric)
189 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
190 return safe_strncpy(buf, _("[NONE SET]"), sizeof(buf));
191 return (UNIX_print(sap->sa_data));
195 static struct aftype unix_aftype = {
196 "unix", "UNIX Domain", AF_UNIX, 0,
197 UNIX_print, UNIX_sprint, NULL, NULL,
202 #endif /* HAVE_AFUNIX */
207 static void INET_reserror(char *text)
212 /* Display an Internet socket address. */
213 static char *INET_print(unsigned char *ptr)
215 return (inet_ntoa((*(struct in_addr *) ptr)));
217 #endif /* KEEP_UNUSED */
219 /* Display an Internet socket address. */
220 static char *INET_sprint(struct sockaddr *sap, int numeric)
222 static char buff[128];
224 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
225 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
227 if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
228 numeric, 0xffffff00) != 0)
235 static char *INET_sprintmask(struct sockaddr *sap, int numeric,
236 unsigned int netmask)
238 static char buff[128];
240 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
241 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
242 if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
243 numeric, netmask) != 0)
248 static int INET_getsock(char *bufp, struct sockaddr *sap)
250 char *sp = bufp, *bp;
253 struct sockaddr_in *sin;
255 sin = (struct sockaddr_in *) sap;
256 sin->sin_family = AF_INET;
261 for (i = 0; i < sizeof(sin->sin_addr.s_addr); i++) {
264 if ((*sp >= 'A') && (*sp <= 'F'))
265 bp[i] |= (int) (*sp - 'A') + 10;
266 else if ((*sp >= '0') && (*sp <= '9'))
267 bp[i] |= (int) (*sp - '0');
275 if ((*sp >= 'A') && (*sp <= 'F'))
276 bp[i] |= (int) (*sp - 'A') + 10;
277 else if ((*sp >= '0') && (*sp <= '9'))
278 bp[i] |= (int) (*sp - '0');
284 sin->sin_addr.s_addr = htonl(val);
289 static int INET_input(int type, char *bufp, struct sockaddr *sap)
293 return (INET_getsock(bufp, sap));
295 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1));
297 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0));
301 static int INET_getnetmask(char *adr, struct sockaddr *m, char *name)
303 struct sockaddr_in *mask = (struct sockaddr_in *) m;
307 if ((slash = strchr(adr, '/')) == NULL)
311 prefix = strtoul(slash, &end, 0);
316 sprintf(name, "/%d", prefix);
318 mask->sin_family = AF_INET;
319 mask->sin_addr.s_addr = htonl(~(0xffffffffU >> prefix));
322 #endif /* KEEP_UNUSED */
324 static struct aftype inet_aftype = {
325 "inet", "DARPA Internet", AF_INET, sizeof(unsigned long),
326 NULL /* UNUSED INET_print */ , INET_sprint,
327 NULL /* UNUSED INET_input */ , NULL /* UNUSED INET_reserror */ ,
328 NULL /*INET_rprint */ , NULL /*INET_rinput */ ,
329 NULL /* UNUSED INET_getnetmask */ ,
334 #endif /* HAVE_AFINET */
339 static void INET6_reserror(char *text)
344 /* Display an Internet socket address. */
345 static char *INET6_print(unsigned char *ptr)
347 static char name[80];
349 inet_ntop(AF_INET6, (struct in6_addr *) ptr, name, 80);
352 #endif /* KEEP_UNUSED */
354 /* Display an Internet socket address. */
355 /* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */
356 static char *INET6_sprint(struct sockaddr *sap, int numeric)
358 static char buff[128];
360 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
361 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
363 (buff, sizeof(buff), (struct sockaddr_in6 *) sap, numeric) != 0)
364 return safe_strncpy(buff, _("[UNKNOWN]"), sizeof(buff));
369 static int INET6_getsock(char *bufp, struct sockaddr *sap)
371 struct sockaddr_in6 *sin6;
373 sin6 = (struct sockaddr_in6 *) sap;
374 sin6->sin6_family = AF_INET6;
377 if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0)
383 static int INET6_input(int type, char *bufp, struct sockaddr *sap)
387 return (INET6_getsock(bufp, sap));
389 return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap));
392 #endif /* KEEP_UNUSED */
394 static struct aftype inet6_aftype = {
395 "inet6", "IPv6", AF_INET6, sizeof(struct in6_addr),
396 NULL /* UNUSED INET6_print */ , INET6_sprint,
397 NULL /* UNUSED INET6_input */ , NULL /* UNUSED INET6_reserror */ ,
398 NULL /*INET6_rprint */ , NULL /*INET6_rinput */ ,
399 NULL /* UNUSED INET6_getnetmask */ ,
404 #endif /* HAVE_AFINET6 */
406 /* Display an UNSPEC address. */
407 static char *UNSPEC_print(unsigned char *ptr)
409 static char buff[sizeof(struct sockaddr) * 3 + 1];
414 for (i = 0; i < sizeof(struct sockaddr); i++) {
415 /* careful -- not every libc's sprintf returns # bytes written */
416 sprintf(pos, "%02X-", (*ptr++ & 0377));
419 /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */
424 /* Display an UNSPEC socket address. */
425 static char *UNSPEC_sprint(struct sockaddr *sap, int numeric)
429 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
430 return safe_strncpy(buf, _("[NONE SET]"), sizeof(buf));
431 return (UNSPEC_print((unsigned char *)sap->sa_data));
434 static struct aftype unspec_aftype = {
435 "unspec", "UNSPEC", AF_UNSPEC, 0,
436 UNSPEC_print, UNSPEC_sprint, NULL, NULL,
440 static struct aftype * const aftypes[] = {
455 static short sVafinit = 0;
459 unspec_aftype.title = _("UNSPEC");
461 unix_aftype.title = _("UNIX Domain");
464 inet_aftype.title = _("DARPA Internet");
467 inet6_aftype.title = _("IPv6");
472 static int aftrans_opt(const char *arg)
474 struct aftrans_t *paft;
478 safe_strncpy(buf, arg, sizeof(buf));
484 tmp2 = strchr(tmp1, ',');
490 for (paft = aftrans; paft->alias; paft++) {
491 if (strcmp(tmp1, paft->alias))
493 if (strlen(paft->name) + strlen(afname) + 1 >= sizeof(afname)) {
494 bb_error_msg(_("Too many address family arguments."));
501 strcat(afname, paft->name);
505 bb_error_msg(_("Unknown address family `%s'."), tmp1);
514 /* set the default AF list from the program name or a constant value */
515 static void aftrans_def(char *tool, char *argv0, char *dflt)
520 strcpy(afname, dflt);
522 if (!(tmp = strrchr(argv0, '/')))
523 tmp = argv0; /* no slash?! */
527 if (!(buf = strdup(tmp)))
530 if (strlen(tool) >= strlen(tmp)) {
534 tmp = buf + (strlen(tmp) - strlen(tool));
536 if (strcmp(tmp, tool) != 0) {
541 if ((tmp = strchr(buf, '_')))
545 if (aftrans_opt(buf))
551 /* Check our protocol family table for this family. */
552 static struct aftype *get_aftype(const char *name)
554 struct aftype * const *afp;
559 #endif /* KEEP_UNUSED */
562 while (*afp != NULL) {
563 if (!strcmp((*afp)->name, name))
567 if (strchr(name, ','))
568 bb_error_msg(_("Please don't supply more than one address family."));
571 #endif /* KEEP_UNUSED */
573 /* Check our protocol family table for this family. */
574 static struct aftype *get_afntype(int af)
576 struct aftype * const *afp;
581 #endif /* KEEP_UNUSED */
584 while (*afp != NULL) {
585 if ((*afp)->af == af)
592 /* Check our protocol family table for this family and return its socket */
593 static int get_socket_for_af(int af)
595 struct aftype * const *afp;
600 #endif /* KEEP_UNUSED */
603 while (*afp != NULL) {
604 if ((*afp)->af == af)
612 /* type: 0=all, 1=getroute */
613 static void print_aflist(int type)
617 struct aftype * const *afp;
622 #endif /* KEEP_UNUSED */
625 while (*afp != NULL) {
626 if ((type == 1 && ((*afp)->rprint == NULL)) || ((*afp)->af == 0)) {
630 if ((count % 3) == 0)
631 fprintf(stderr, count ? "\n " : " ");
635 fprintf(stderr, "%s (%s) ", txt, _((*afp)->title));
639 fprintf(stderr, "\n");
641 #endif /* KEEP_UNUSED */
643 struct user_net_device_stats {
644 unsigned long long rx_packets; /* total packets received */
645 unsigned long long tx_packets; /* total packets transmitted */
646 unsigned long long rx_bytes; /* total bytes received */
647 unsigned long long tx_bytes; /* total bytes transmitted */
648 unsigned long rx_errors; /* bad packets received */
649 unsigned long tx_errors; /* packet transmit problems */
650 unsigned long rx_dropped; /* no space in linux buffers */
651 unsigned long tx_dropped; /* no space available in linux */
652 unsigned long rx_multicast; /* multicast packets received */
653 unsigned long rx_compressed;
654 unsigned long tx_compressed;
655 unsigned long collisions;
657 /* detailed rx_errors: */
658 unsigned long rx_length_errors;
659 unsigned long rx_over_errors; /* receiver ring buff overflow */
660 unsigned long rx_crc_errors; /* recved pkt with crc error */
661 unsigned long rx_frame_errors; /* recv'd frame alignment error */
662 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
663 unsigned long rx_missed_errors; /* receiver missed packet */
664 /* detailed tx_errors */
665 unsigned long tx_aborted_errors;
666 unsigned long tx_carrier_errors;
667 unsigned long tx_fifo_errors;
668 unsigned long tx_heartbeat_errors;
669 unsigned long tx_window_errors;
673 struct interface *next, *prev;
674 char name[IFNAMSIZ]; /* interface name */
675 short type; /* if type */
676 short flags; /* various flags */
677 int metric; /* routing metric */
678 int mtu; /* MTU value */
679 int tx_queue_len; /* transmit queue length */
680 struct ifmap map; /* hardware setup */
681 struct sockaddr addr; /* IP address */
682 struct sockaddr dstaddr; /* P-P IP address */
683 struct sockaddr broadaddr; /* IP broadcast address */
684 struct sockaddr netmask; /* IP network mask */
686 char hwaddr[32]; /* HW address */
687 int statistics_valid;
688 struct user_net_device_stats stats; /* statistics */
689 int keepalive; /* keepalive value for SLIP */
690 int outfill; /* outfill value for SLIP */
694 int interface_opt_a = 0; /* show all interfaces */
697 static int opt_i = 0; /* show the statistics */
698 static int opt_v = 0; /* debugging output flag */
700 static int addr_family = 0; /* currently selected AF */
701 #endif /* KEEP_UNUSED */
703 static struct interface *int_list, *int_last;
704 static int skfd = -1; /* generic raw socket desc. */
707 static int sockets_open(int family)
709 struct aftype * const *aft;
711 static int force = -1;
715 if (get_linux_version_code() < KERNEL_VERSION(2,1,0))
717 if (access("/proc/net", R_OK))
720 for (aft = aftypes; *aft; aft++) {
721 struct aftype *af = *aft;
722 int type = SOCK_DGRAM;
724 if (af->af == AF_UNSPEC)
726 if (family && family != af->af)
732 /* Check some /proc file first to not stress kmod */
733 if (!family && !force && af->flag_file) {
734 if (access(af->flag_file, R_OK))
737 af->fd = socket(af->af, type, 0);
742 bb_error_msg(_("No usable address families found."));
747 #ifdef CONFIG_FEATURE_CLEAN_UP
748 static void sockets_close(void)
750 struct aftype * const *aft;
751 for (aft = aftypes; *aft != NULL; aft++) {
752 struct aftype *af = *aft;
761 /* like strcmp(), but knows about numbers */
762 static int nstrcmp(const char *a, const char *b)
764 const char *a_ptr = a;
765 const char *b_ptr = b;
771 if (!isdigit(*a) && isdigit(*(a+1))) {
779 if (isdigit(*a) && isdigit(*b)) {
780 return atoi(a_ptr) > atoi(b_ptr) ? 1 : -1;
785 static struct interface *add_interface(char *name)
787 struct interface *ife, **nextp, *new;
789 for (ife = int_last; ife; ife = ife->prev) {
790 int n = nstrcmp(ife->name, name);
798 safe_strncpy(new->name, name, IFNAMSIZ);
799 nextp = ife ? &ife->next : &int_list;
803 new->next->prev = new;
811 static int if_readconf(void)
819 /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets
821 skfd2 = get_socket_for_af(AF_INET);
823 bb_perror_msg(("warning: no inet socket available"));
824 /* Try to soldier on with whatever socket we can get hold of. */
825 skfd2 = sockets_open(0);
832 ifc.ifc_len = sizeof(struct ifreq) * numreqs;
833 ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len);
835 if (ioctl(skfd2, SIOCGIFCONF, &ifc) < 0) {
836 perror("SIOCGIFCONF");
839 if (ifc.ifc_len == sizeof(struct ifreq) * numreqs) {
840 /* assume it overflowed and try again */
848 for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) {
849 add_interface(ifr->ifr_name);
859 static char *get_name(char *name, char *p)
861 /* Extract <name>[:<alias>] from nul-terminated p where p matches
862 <name>[:<alias>]: after leading whitespace.
863 If match is not made, set name empty and return unchanged p */
864 int namestart=0, nameend=0, aliasend;
865 while (isspace(p[namestart]))
868 while (p[nameend] && p[nameend]!=':' && !isspace(p[nameend]))
870 if (p[nameend]==':') {
872 while (p[aliasend] && isdigit(p[aliasend]))
874 if (p[aliasend]==':') {
877 if ((nameend-namestart)<IFNAMSIZ) {
878 memcpy(name,&p[namestart],nameend-namestart);
879 name[nameend-namestart]='\0';
882 /* Interface name too large */
886 /* first ':' not found - return empty */
892 /* If scanf supports size qualifiers for %n conversions, then we can
893 * use a modified fmt that simply stores the position in the fields
894 * having no associated fields in the proc string. Of course, we need
895 * to zero them again when we're done. But that is smaller than the
896 * old approach of multiple scanf occurrences with large numbers of
899 /* static const char * const ss_fmt[] = { */
900 /* "%lln%llu%lu%lu%lu%lu%ln%ln%lln%llu%lu%lu%lu%lu%lu", */
901 /* "%llu%llu%lu%lu%lu%lu%ln%ln%llu%llu%lu%lu%lu%lu%lu", */
902 /* "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" */
905 /* Lie about the size of the int pointed to for %n. */
906 #if INT_MAX == LONG_MAX
907 static const char * const ss_fmt[] = {
908 "%n%llu%u%u%u%u%n%n%n%llu%u%u%u%u%u",
909 "%llu%llu%u%u%u%u%n%n%llu%llu%u%u%u%u%u",
910 "%llu%llu%u%u%u%u%u%u%llu%llu%u%u%u%u%u%u"
913 static const char * const ss_fmt[] = {
914 "%n%llu%lu%lu%lu%lu%n%n%n%llu%lu%lu%lu%lu%lu",
915 "%llu%llu%lu%lu%lu%lu%n%n%llu%llu%lu%lu%lu%lu%lu",
916 "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu"
921 static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn)
923 memset(&ife->stats, 0, sizeof(struct user_net_device_stats));
925 sscanf(bp, ss_fmt[procnetdev_vsn],
926 &ife->stats.rx_bytes, /* missing for 0 */
927 &ife->stats.rx_packets,
928 &ife->stats.rx_errors,
929 &ife->stats.rx_dropped,
930 &ife->stats.rx_fifo_errors,
931 &ife->stats.rx_frame_errors,
932 &ife->stats.rx_compressed, /* missing for <= 1 */
933 &ife->stats.rx_multicast, /* missing for <= 1 */
934 &ife->stats.tx_bytes, /* missing for 0 */
935 &ife->stats.tx_packets,
936 &ife->stats.tx_errors,
937 &ife->stats.tx_dropped,
938 &ife->stats.tx_fifo_errors,
939 &ife->stats.collisions,
940 &ife->stats.tx_carrier_errors,
941 &ife->stats.tx_compressed /* missing for <= 1 */
944 if (procnetdev_vsn <= 1) {
945 if (procnetdev_vsn == 0) {
946 ife->stats.rx_bytes = 0;
947 ife->stats.tx_bytes = 0;
949 ife->stats.rx_multicast = 0;
950 ife->stats.rx_compressed = 0;
951 ife->stats.tx_compressed = 0;
955 static inline int procnetdev_version(char *buf)
957 if (strstr(buf, "compressed"))
959 if (strstr(buf, "bytes"))
964 static int if_readlist_proc(char *target)
966 static int proc_read;
969 struct interface *ife;
970 int err, procnetdev_vsn;
977 fh = fopen(_PATH_PROCNET_DEV, "r");
979 bb_perror_msg(_("Warning: cannot open %s. Limited output."), _PATH_PROCNET_DEV);
980 return if_readconf();
982 fgets(buf, sizeof buf, fh); /* eat line */
983 fgets(buf, sizeof buf, fh);
985 procnetdev_vsn = procnetdev_version(buf);
988 while (fgets(buf, sizeof buf, fh)) {
991 s = get_name(name, buf);
992 ife = add_interface(name);
993 get_dev_fields(s, ife, procnetdev_vsn);
994 ife->statistics_valid = 1;
995 if (target && !strcmp(target, name))
999 perror(_PATH_PROCNET_DEV);
1007 static int if_readlist(void)
1009 int err = if_readlist_proc(NULL);
1012 err = if_readconf();
1016 static int for_all_interfaces(int (*doit) (struct interface *, void *),
1019 struct interface *ife;
1021 if (!int_list && (if_readlist() < 0))
1023 for (ife = int_list; ife; ife = ife->next) {
1024 int err = doit(ife, cookie);
1032 /* Fetch the interface configuration from the kernel. */
1033 static int if_fetch(struct interface *ife)
1037 char *ifname = ife->name;
1039 strcpy(ifr.ifr_name, ifname);
1040 if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0)
1042 ife->flags = ifr.ifr_flags;
1044 strcpy(ifr.ifr_name, ifname);
1045 if (ioctl(skfd, SIOCGIFHWADDR, &ifr) < 0)
1046 memset(ife->hwaddr, 0, 32);
1048 memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8);
1050 ife->type = ifr.ifr_hwaddr.sa_family;
1052 strcpy(ifr.ifr_name, ifname);
1053 if (ioctl(skfd, SIOCGIFMETRIC, &ifr) < 0)
1056 ife->metric = ifr.ifr_metric;
1058 strcpy(ifr.ifr_name, ifname);
1059 if (ioctl(skfd, SIOCGIFMTU, &ifr) < 0)
1062 ife->mtu = ifr.ifr_mtu;
1065 if (ife->type == ARPHRD_SLIP || ife->type == ARPHRD_CSLIP ||
1066 ife->type == ARPHRD_SLIP6 || ife->type == ARPHRD_CSLIP6 ||
1067 ife->type == ARPHRD_ADAPT) {
1069 strcpy(ifr.ifr_name, ifname);
1070 if (ioctl(skfd, SIOCGOUTFILL, &ifr) < 0)
1073 ife->outfill = (unsigned int) ifr.ifr_data;
1075 #ifdef SIOCGKEEPALIVE
1076 strcpy(ifr.ifr_name, ifname);
1077 if (ioctl(skfd, SIOCGKEEPALIVE, &ifr) < 0)
1080 ife->keepalive = (unsigned int) ifr.ifr_data;
1086 strcpy(ifr.ifr_name, ifname);
1087 if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0)
1088 ife->map = ifr.ifr_map;
1091 memset(&ife->map, 0, sizeof(struct ifmap));
1093 #ifdef HAVE_TXQUEUELEN
1094 strcpy(ifr.ifr_name, ifname);
1095 if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) < 0)
1096 ife->tx_queue_len = -1; /* unknown value */
1098 ife->tx_queue_len = ifr.ifr_qlen;
1100 ife->tx_queue_len = -1; /* unknown value */
1105 fd = get_socket_for_af(AF_INET);
1107 strcpy(ifr.ifr_name, ifname);
1108 ifr.ifr_addr.sa_family = AF_INET;
1109 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1111 ife->addr = ifr.ifr_addr;
1112 strcpy(ifr.ifr_name, ifname);
1113 if (ioctl(fd, SIOCGIFDSTADDR, &ifr) < 0)
1114 memset(&ife->dstaddr, 0, sizeof(struct sockaddr));
1116 ife->dstaddr = ifr.ifr_dstaddr;
1118 strcpy(ifr.ifr_name, ifname);
1119 if (ioctl(fd, SIOCGIFBRDADDR, &ifr) < 0)
1120 memset(&ife->broadaddr, 0, sizeof(struct sockaddr));
1122 ife->broadaddr = ifr.ifr_broadaddr;
1124 strcpy(ifr.ifr_name, ifname);
1125 if (ioctl(fd, SIOCGIFNETMASK, &ifr) < 0)
1126 memset(&ife->netmask, 0, sizeof(struct sockaddr));
1128 ife->netmask = ifr.ifr_netmask;
1130 memset(&ife->addr, 0, sizeof(struct sockaddr));
1138 static int do_if_fetch(struct interface *ife)
1140 if (if_fetch(ife) < 0) {
1143 if (errno == ENODEV) {
1144 /* Give better error message for this case. */
1145 errmsg = _("Device not found");
1147 errmsg = strerror(errno);
1149 bb_error_msg(_("%s: error fetching interface information: %s"),
1156 /* This structure defines hardware protocols and their handlers. */
1158 const char * const name;
1162 char *(*print) (unsigned char *);
1163 int (*input) (char *, struct sockaddr *);
1164 int (*activate) (int fd);
1165 int suppress_null_addr;
1168 static const struct hwtype unspec_hwtype = {
1169 "unspec", "UNSPEC", -1, 0,
1170 UNSPEC_print, NULL, NULL
1173 static const struct hwtype loop_hwtype = {
1174 "loop", "Local Loopback", ARPHRD_LOOPBACK, 0,
1179 #include <net/if_arp.h>
1181 #if (__GLIBC__ >=2 && __GLIBC_MINOR >= 1) || defined(_NEWLIB_VERSION)
1182 #include <net/ethernet.h>
1184 #include <linux/if_ether.h>
1187 /* Display an Ethernet address in readable format. */
1188 static char *pr_ether(unsigned char *ptr)
1190 static char buff[64];
1192 snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X",
1193 (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
1194 (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
1200 /* Input an Ethernet address and convert to binary. */
1201 static int in_ether(char *bufp, struct sockaddr *sap)
1208 sap->sa_family = ether_hwtype.type;
1213 while ((*bufp != '\0') && (i < ETH_ALEN)) {
1218 else if (c >= 'a' && c <= 'f')
1220 else if (c >= 'A' && c <= 'F')
1224 bb_error_msg(_("in_ether(%s): invalid ether address!\n"), orig);
1233 else if (c >= 'a' && c <= 'f')
1234 val |= c - 'a' + 10;
1235 else if (c >= 'A' && c <= 'F')
1236 val |= c - 'A' + 10;
1237 else if (c == ':' || c == 0)
1241 bb_error_msg(_("in_ether(%s): invalid ether address!"), orig);
1248 *ptr++ = (unsigned char) (val & 0377);
1251 /* We might get a semicolon here - not required. */
1254 if (i == ETH_ALEN) {
1255 bb_error_msg(_("in_ether(%s): trailing : ignored!"), orig);
1263 /* That's it. Any trailing junk? */
1264 if ((i == ETH_ALEN) && (*bufp != '\0')) {
1265 bb_error_msg(_("in_ether(%s): trailing junk!"), orig);
1269 bb_error_msg("in_ether(%s): %s", orig, pr_ether(sap->sa_data));
1274 #endif /* KEEP_UNUSED */
1277 static const struct hwtype ether_hwtype = {
1278 "ether", "Ethernet", ARPHRD_ETHER, ETH_ALEN,
1279 pr_ether, NULL /* UNUSED in_ether */ , NULL
1283 #endif /* HAVE_HWETHER */
1288 #include <net/if_arp.h>
1291 /* Start the PPP encapsulation on the file descriptor. */
1292 static int do_ppp(int fd)
1294 bb_error_msg(_("You cannot start PPP with this program."));
1297 #endif /* KEEP_UNUSED */
1299 static const struct hwtype ppp_hwtype = {
1300 "ppp", "Point-Point Protocol", ARPHRD_PPP, 0,
1301 NULL, NULL, NULL /* UNUSED do_ppp */ , 0
1305 #endif /* HAVE_PPP */
1307 static const struct hwtype * const hwtypes[] = {
1335 static short sVhwinit = 0;
1337 static void hwinit()
1339 loop_hwtype.title = _("Local Loopback");
1340 unspec_hwtype.title = _("UNSPEC");
1342 slip_hwtype.title = _("Serial Line IP");
1343 cslip_hwtype.title = _("VJ Serial Line IP");
1344 slip6_hwtype.title = _("6-bit Serial Line IP");
1345 cslip6_hwtype.title = _("VJ 6-bit Serial Line IP");
1346 adaptive_hwtype.title = _("Adaptive Serial Line IP");
1349 ether_hwtype.title = _("Ethernet");
1352 tunnel_hwtype.title = _("IPIP Tunnel");
1355 ppp_hwtype.title = _("Point-to-Point Protocol");
1359 #endif /* KEEP_UNUSED */
1363 static const char * const if_port_text[][4] = {
1364 /* Keep in step with <linux/netdevice.h> */
1365 {"unknown", NULL, NULL, NULL},
1366 {"10base2", "bnc", "coax", NULL},
1367 {"10baseT", "utp", "tpe", NULL},
1368 {"AUI", "thick", "db15", NULL},
1369 {"100baseT", NULL, NULL, NULL},
1370 {"100baseTX", NULL, NULL, NULL},
1371 {"100baseFX", NULL, NULL, NULL},
1372 {NULL, NULL, NULL, NULL},
1375 static const char * const if_port_text[] = {
1376 /* Keep in step with <linux/netdevice.h> */
1389 /* Check our hardware type table for this type. */
1390 static const struct hwtype *get_hwntype(int type)
1392 const struct hwtype * const *hwp;
1397 #endif /* KEEP_UNUSED */
1400 while (*hwp != NULL) {
1401 if ((*hwp)->type == type)
1408 /* return 1 if address is all zeros */
1409 static int hw_null_address(const struct hwtype *hw, void *ap)
1412 unsigned char *address = (unsigned char *) ap;
1414 for (i = 0; i < hw->alen; i++)
1420 static const char TRext[] = "\0\0\0Ki\0Mi\0Gi\0Ti";
1422 static void print_bytes_scaled(unsigned long long ull, const char *end)
1424 unsigned long long int_part;
1426 unsigned int frac_part;
1435 /* This does correct rounding and is a little larger. But it
1436 * uses KiB as the smallest displayed unit. */
1437 if ((int_part < (1024*1024 - 51)) || !--i) {
1439 int_part += 51; /* 1024*.05 = 51.2 */
1440 frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024;
1443 ext += 3; /* KiB, MiB, GiB, TiB */
1445 if (int_part >= 1024) {
1446 frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024;
1448 ext += 3; /* KiB, MiB, GiB, TiB */
1454 printf("X bytes:%llu (%llu.%u %sB)%s", ull, int_part, frac_part, ext, end);
1457 static const char * const ife_print_flags_strs[] = {
1476 static const unsigned short ife_print_flags_mask[] = {
1496 static void ife_print(struct interface *ptr)
1499 const struct hwtype *hw;
1501 int can_compress = 0;
1505 char addr6[40], devname[20];
1506 struct sockaddr_in6 sap;
1507 int plen, scope, dad_status, if_idx;
1511 ap = get_afntype(ptr->addr.sa_family);
1513 ap = get_afntype(0);
1517 if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6)
1520 hw = get_hwntype(hf);
1522 hw = get_hwntype(-1);
1524 printf(_("%-9.9s Link encap:%s "), ptr->name, _(hw->title));
1525 /* For some hardware types (eg Ash, ATM) we don't print the
1526 hardware address if it's null. */
1527 if (hw->print != NULL && (!(hw_null_address(hw, ptr->hwaddr) &&
1528 hw->suppress_null_addr)))
1529 printf(_("HWaddr %s "), hw->print((unsigned char *)ptr->hwaddr));
1531 if (ptr->flags & IFF_PORTSEL) {
1532 printf(_("Media:%s"), if_port_text[ptr->map.port] /* [0] */);
1533 if (ptr->flags & IFF_AUTOMEDIA)
1534 printf(_("(auto)"));
1541 printf(_(" %s addr:%s "), ap->name,
1542 ap->sprint(&ptr->addr, 1));
1543 if (ptr->flags & IFF_POINTOPOINT) {
1544 printf(_(" P-t-P:%s "), ap->sprint(&ptr->dstaddr, 1));
1546 if (ptr->flags & IFF_BROADCAST) {
1547 printf(_(" Bcast:%s "), ap->sprint(&ptr->broadaddr, 1));
1549 printf(_(" Mask:%s\n"), ap->sprint(&ptr->netmask, 1));
1555 #define IPV6_ADDR_ANY 0x0000U
1557 #define IPV6_ADDR_UNICAST 0x0001U
1558 #define IPV6_ADDR_MULTICAST 0x0002U
1559 #define IPV6_ADDR_ANYCAST 0x0004U
1561 #define IPV6_ADDR_LOOPBACK 0x0010U
1562 #define IPV6_ADDR_LINKLOCAL 0x0020U
1563 #define IPV6_ADDR_SITELOCAL 0x0040U
1565 #define IPV6_ADDR_COMPATv4 0x0080U
1567 #define IPV6_ADDR_SCOPE_MASK 0x00f0U
1569 #define IPV6_ADDR_MAPPED 0x1000U
1570 #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */
1572 if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) {
1574 (f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n",
1575 addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4],
1576 addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope,
1577 &dad_status, devname) != EOF) {
1578 if (!strcmp(devname, ptr->name)) {
1579 sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
1580 addr6p[0], addr6p[1], addr6p[2], addr6p[3],
1581 addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
1582 inet_pton(AF_INET6, addr6,
1583 (struct sockaddr *) &sap.sin6_addr);
1584 sap.sin6_family = AF_INET6;
1585 printf(_(" inet6 addr: %s/%d"),
1586 inet6_aftype.sprint((struct sockaddr *) &sap, 1),
1588 printf(_(" Scope:"));
1589 switch (scope & IPV6_ADDR_SCOPE_MASK) {
1591 printf(_("Global"));
1593 case IPV6_ADDR_LINKLOCAL:
1596 case IPV6_ADDR_SITELOCAL:
1599 case IPV6_ADDR_COMPATv4:
1600 printf(_("Compat"));
1602 case IPV6_ADDR_LOOPBACK:
1606 printf(_("Unknown"));
1616 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */
1618 if (ptr->flags == 0) {
1619 printf(_("[NO FLAGS] "));
1623 if (ptr->flags & ife_print_flags_mask[i]) {
1624 printf(_(ife_print_flags_strs[i]));
1626 } while (ife_print_flags_mask[++i]);
1629 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */
1630 printf(_(" MTU:%d Metric:%d"), ptr->mtu, ptr->metric ? ptr->metric : 1);
1631 #ifdef SIOCSKEEPALIVE
1632 if (ptr->outfill || ptr->keepalive)
1633 printf(_(" Outfill:%d Keepalive:%d"), ptr->outfill, ptr->keepalive);
1637 /* If needed, display the interface statistics. */
1639 if (ptr->statistics_valid) {
1640 /* XXX: statistics are currently only printed for the primary address,
1641 * not for the aliases, although strictly speaking they're shared
1646 printf("RX packets:%llu errors:%lu dropped:%lu overruns:%lu frame:%lu\n",
1647 ptr->stats.rx_packets, ptr->stats.rx_errors,
1648 ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,
1649 ptr->stats.rx_frame_errors);
1651 printf(" compressed:%lu\n",
1652 ptr->stats.rx_compressed);
1654 printf("TX packets:%llu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n",
1655 ptr->stats.tx_packets, ptr->stats.tx_errors,
1656 ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,
1657 ptr->stats.tx_carrier_errors);
1658 printf(" collisions:%lu ", ptr->stats.collisions);
1660 printf("compressed:%lu ", ptr->stats.tx_compressed);
1661 if (ptr->tx_queue_len != -1)
1662 printf("txqueuelen:%d ", ptr->tx_queue_len);
1664 print_bytes_scaled(ptr->stats.rx_bytes, " T");
1665 print_bytes_scaled(ptr->stats.tx_bytes, "\n");
1669 if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma ||
1670 ptr->map.base_addr)) {
1673 printf(_("Interrupt:%d "), ptr->map.irq);
1674 if (ptr->map.base_addr >= 0x100) /* Only print devices using it for
1676 printf(_("Base address:0x%lx "),
1677 (unsigned long) ptr->map.base_addr);
1678 if (ptr->map.mem_start) {
1679 printf(_("Memory:%lx-%lx "), ptr->map.mem_start,
1683 printf(_("DMA chan:%x "), ptr->map.dma);
1690 static int do_if_print(struct interface *ife, void *cookie)
1692 int *opt_a = (int *) cookie;
1695 res = do_if_fetch(ife);
1697 if ((ife->flags & IFF_UP) || *opt_a)
1703 static struct interface *lookup_interface(char *name)
1705 struct interface *ife = NULL;
1707 if (if_readlist_proc(name) < 0)
1709 ife = add_interface(name);
1713 /* for ipv4 add/del modes */
1714 static int if_print(char *ifname)
1719 res = for_all_interfaces(do_if_print, &interface_opt_a);
1721 struct interface *ife;
1723 ife = lookup_interface(ifname);
1724 res = do_if_fetch(ife);
1731 int display_interfaces(char *ifname);
1732 int display_interfaces(char *ifname)
1736 /* Create a channel to the NET kernel. */
1737 if ((skfd = sockets_open(0)) < 0) {
1738 bb_perror_msg_and_die("socket");
1741 /* Do we have to show the current setup? */
1742 status = if_print(ifname);
1743 #ifdef CONFIG_FEATURE_CLEAN_UP