2 * stolen from net-tools-1.59 and stripped down for busybox by
3 * Erik Andersen <andersee@debian.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 1.15 2003/03/19 09:12:07 mjn3 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 */
54 #ifdef CONFIG_FEATURE_IPV6
55 # define HAVE_AFINET6 1
62 * Device Hardware types.
65 #define HAVE_HWETHER 1
70 #include "inet_common.h"
78 #include <sys/ioctl.h>
80 #include <net/if_arp.h>
84 #define _PATH_PROCNET_DEV "/proc/net/dev"
85 #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
86 #define new(p) ((p) = xcalloc(1,sizeof(*(p))))
87 #define KRELEASE(maj,min,patch) ((maj) * 65536 + (min)*256 + (patch))
89 static int procnetdev_vsn = 1;
91 /* Ugh. But libc5 doesn't provide POSIX types. */
92 #include <asm/types.h>
96 #include <net/if_slip.h>
103 * This is in linux/include/net/ipv6.h.
107 struct in6_addr ifr6_addr;
108 __u32 ifr6_prefixlen;
109 unsigned int ifr6_ifindex;
114 #endif /* HAVE_AFINET6 */
117 #if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
118 #include <netipx/ipx.h>
124 /* Defines for glibc2.0 users. */
125 #ifndef SIOCSIFTXQLEN
126 #define SIOCSIFTXQLEN 0x8943
127 #define SIOCGIFTXQLEN 0x8942
130 /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
132 #define ifr_qlen ifr_ifru.ifru_mtu
135 #ifndef HAVE_TXQUEUELEN
136 #define HAVE_TXQUEUELEN 1
140 #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
143 /* This structure defines protocol families and their handlers. */
149 char *(*print) (unsigned char *);
150 char *(*sprint) (struct sockaddr *, int numeric);
151 int (*input) (int type, char *bufp, struct sockaddr *);
152 void (*herror) (char *text);
153 int (*rprint) (int options);
154 int (*rinput) (int typ, int ext, char **argv);
157 int (*getmask) (char *src, struct sockaddr * mask, char *name);
171 static int flag_ax25;
177 static int flag_netrom;
179 static int flag_inet;
182 static int flag_inet6;
185 static int flag_econet;
188 static int flag_x25 = 0;
195 static struct aftrans_t {
203 "ax25", "ax25", &flag_ax25},
206 "ip", "inet", &flag_inet},
209 "ip6", "inet6", &flag_inet6},
213 "ipx", "ipx", &flag_ipx},
217 "appletalk", "ddp", &flag_ddp},
221 "netrom", "netrom", &flag_netrom},
224 "inet", "inet", &flag_inet},
227 "inet6", "inet6", &flag_inet6},
231 "ddp", "ddp", &flag_ddp},
234 "unix", "unix", &flag_unx}, {
235 "tcpip", "inet", &flag_inet},
238 "econet", "ec", &flag_econet},
242 "x25", "x25", &flag_x25},
246 "ash", "ash", &flag_ash},
252 static char afname[256] = "";
253 #endif /* KEEP_UNUSED */
257 /* Display a UNIX domain address. */
258 static char *UNIX_print(unsigned char *ptr)
264 /* Display a UNIX domain address. */
265 static char *UNIX_sprint(struct sockaddr *sap, int numeric)
269 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
270 return safe_strncpy(buf, _("[NONE SET]"), sizeof(buf));
271 return (UNIX_print(sap->sa_data));
275 static struct aftype unix_aftype = {
276 "unix", "UNIX Domain", AF_UNIX, 0,
277 UNIX_print, UNIX_sprint, NULL, NULL,
282 #endif /* HAVE_AFUNIX */
287 static void INET_reserror(char *text)
292 /* Display an Internet socket address. */
293 static char *INET_print(unsigned char *ptr)
295 return (inet_ntoa((*(struct in_addr *) ptr)));
297 #endif /* KEEP_UNUSED */
299 /* Display an Internet socket address. */
300 static char *INET_sprint(struct sockaddr *sap, int numeric)
302 static char buff[128];
304 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
305 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
307 if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
308 numeric, 0xffffff00) != 0)
315 static char *INET_sprintmask(struct sockaddr *sap, int numeric,
316 unsigned int netmask)
318 static char buff[128];
320 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
321 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
322 if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
323 numeric, netmask) != 0)
328 static int INET_getsock(char *bufp, struct sockaddr *sap)
330 char *sp = bufp, *bp;
333 struct sockaddr_in *sin;
335 sin = (struct sockaddr_in *) sap;
336 sin->sin_family = AF_INET;
341 for (i = 0; i < sizeof(sin->sin_addr.s_addr); i++) {
344 if ((*sp >= 'A') && (*sp <= 'F'))
345 bp[i] |= (int) (*sp - 'A') + 10;
346 else if ((*sp >= '0') && (*sp <= '9'))
347 bp[i] |= (int) (*sp - '0');
355 if ((*sp >= 'A') && (*sp <= 'F'))
356 bp[i] |= (int) (*sp - 'A') + 10;
357 else if ((*sp >= '0') && (*sp <= '9'))
358 bp[i] |= (int) (*sp - '0');
364 sin->sin_addr.s_addr = htonl(val);
369 static int INET_input(int type, char *bufp, struct sockaddr *sap)
373 return (INET_getsock(bufp, sap));
375 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1));
377 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0));
381 static int INET_getnetmask(char *adr, struct sockaddr *m, char *name)
383 struct sockaddr_in *mask = (struct sockaddr_in *) m;
387 if ((slash = strchr(adr, '/')) == NULL)
391 prefix = strtoul(slash, &end, 0);
396 sprintf(name, "/%d", prefix);
398 mask->sin_family = AF_INET;
399 mask->sin_addr.s_addr = htonl(~(0xffffffffU >> prefix));
402 #endif /* KEEP_UNUSED */
404 static struct aftype inet_aftype = {
405 "inet", "DARPA Internet", AF_INET, sizeof(unsigned long),
406 NULL /* UNUSED INET_print */ , INET_sprint,
407 NULL /* UNUSED INET_input */ , NULL /* UNUSED INET_reserror */ ,
408 NULL /*INET_rprint */ , NULL /*INET_rinput */ ,
409 NULL /* UNUSED INET_getnetmask */ ,
414 #endif /* HAVE_AFINET */
419 static void INET6_reserror(char *text)
424 /* Display an Internet socket address. */
425 static char *INET6_print(unsigned char *ptr)
427 static char name[80];
429 inet_ntop(AF_INET6, (struct in6_addr *) ptr, name, 80);
432 #endif /* KEEP_UNUSED */
434 /* Display an Internet socket address. */
435 /* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */
436 static char *INET6_sprint(struct sockaddr *sap, int numeric)
438 static char buff[128];
440 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
441 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
443 (buff, sizeof(buff), (struct sockaddr_in6 *) sap, numeric) != 0)
444 return safe_strncpy(buff, _("[UNKNOWN]"), sizeof(buff));
449 static int INET6_getsock(char *bufp, struct sockaddr *sap)
451 struct sockaddr_in6 *sin6;
453 sin6 = (struct sockaddr_in6 *) sap;
454 sin6->sin6_family = AF_INET6;
457 if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0)
463 static int INET6_input(int type, char *bufp, struct sockaddr *sap)
467 return (INET6_getsock(bufp, sap));
469 return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap));
472 #endif /* KEEP_UNUSED */
474 static struct aftype inet6_aftype = {
475 "inet6", "IPv6", AF_INET6, sizeof(struct in6_addr),
476 NULL /* UNUSED INET6_print */ , INET6_sprint,
477 NULL /* UNUSED INET6_input */ , NULL /* UNUSED INET6_reserror */ ,
478 NULL /*INET6_rprint */ , NULL /*INET6_rinput */ ,
479 NULL /* UNUSED INET6_getnetmask */ ,
484 #endif /* HAVE_AFINET6 */
486 /* Display an UNSPEC address. */
487 static char *UNSPEC_print(unsigned char *ptr)
489 static char buff[sizeof(struct sockaddr) * 3 + 1];
494 for (i = 0; i < sizeof(struct sockaddr); i++) {
495 /* careful -- not every libc's sprintf returns # bytes written */
496 sprintf(pos, "%02X-", (*ptr++ & 0377));
499 /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */
504 /* Display an UNSPEC socket address. */
505 static char *UNSPEC_sprint(struct sockaddr *sap, int numeric)
509 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
510 return safe_strncpy(buf, _("[NONE SET]"), sizeof(buf));
511 return (UNSPEC_print(sap->sa_data));
514 static struct aftype unspec_aftype = {
515 "unspec", "UNSPEC", AF_UNSPEC, 0,
516 UNSPEC_print, UNSPEC_sprint, NULL, NULL,
520 static struct aftype *aftypes[] = {
559 static short sVafinit = 0;
563 unspec_aftype.title = _("UNSPEC");
565 unix_aftype.title = _("UNIX Domain");
568 inet_aftype.title = _("DARPA Internet");
571 inet6_aftype.title = _("IPv6");
574 ax25_aftype.title = _("AMPR AX.25");
577 netrom_aftype.title = _("AMPR NET/ROM");
580 ipx_aftype.title = _("Novell IPX");
583 ddp_aftype.title = _("Appletalk DDP");
586 ec_aftype.title = _("Econet");
589 x25_aftype.title = _("CCITT X.25");
592 rose_aftype.title = _("AMPR ROSE");
595 ash_aftype.title = _("Ash");
600 static int aftrans_opt(const char *arg)
602 struct aftrans_t *paft;
606 safe_strncpy(buf, arg, sizeof(buf));
612 tmp2 = strchr(tmp1, ',');
618 for (paft = aftrans; paft->alias; paft++) {
619 if (strcmp(tmp1, paft->alias))
621 if (strlen(paft->name) + strlen(afname) + 1 >= sizeof(afname)) {
622 bb_error_msg(_("Too many address family arguments."));
629 strcat(afname, paft->name);
633 bb_error_msg(_("Unknown address family `%s'."), tmp1);
642 /* set the default AF list from the program name or a constant value */
643 static void aftrans_def(char *tool, char *argv0, char *dflt)
648 strcpy(afname, dflt);
650 if (!(tmp = strrchr(argv0, '/')))
651 tmp = argv0; /* no slash?! */
655 if (!(buf = strdup(tmp)))
658 if (strlen(tool) >= strlen(tmp)) {
662 tmp = buf + (strlen(tmp) - strlen(tool));
664 if (strcmp(tmp, tool) != 0) {
669 if ((tmp = strchr(buf, '_')))
673 if (aftrans_opt(buf))
679 /* Check our protocol family table for this family. */
680 static struct aftype *get_aftype(const char *name)
687 #endif /* KEEP_UNUSED */
690 while (*afp != NULL) {
691 if (!strcmp((*afp)->name, name))
695 if (strchr(name, ','))
696 bb_error_msg(_("Please don't supply more than one address family."));
699 #endif /* KEEP_UNUSED */
701 /* Check our protocol family table for this family. */
702 static struct aftype *get_afntype(int af)
709 #endif /* KEEP_UNUSED */
712 while (*afp != NULL) {
713 if ((*afp)->af == af)
720 /* Check our protocol family table for this family and return its socket */
721 static int get_socket_for_af(int af)
728 #endif /* KEEP_UNUSED */
731 while (*afp != NULL) {
732 if ((*afp)->af == af)
740 /* type: 0=all, 1=getroute */
741 static void print_aflist(int type)
750 #endif /* KEEP_UNUSED */
753 while (*afp != NULL) {
754 if ((type == 1 && ((*afp)->rprint == NULL)) || ((*afp)->af == 0)) {
758 if ((count % 3) == 0)
759 fprintf(stderr, count ? "\n " : " ");
763 fprintf(stderr, "%s (%s) ", txt, _((*afp)->title));
767 fprintf(stderr, "\n");
769 #endif /* KEEP_UNUSED */
771 struct user_net_device_stats {
772 unsigned long long rx_packets; /* total packets received */
773 unsigned long long tx_packets; /* total packets transmitted */
774 unsigned long long rx_bytes; /* total bytes received */
775 unsigned long long tx_bytes; /* total bytes transmitted */
776 unsigned long rx_errors; /* bad packets received */
777 unsigned long tx_errors; /* packet transmit problems */
778 unsigned long rx_dropped; /* no space in linux buffers */
779 unsigned long tx_dropped; /* no space available in linux */
780 unsigned long rx_multicast; /* multicast packets received */
781 unsigned long rx_compressed;
782 unsigned long tx_compressed;
783 unsigned long collisions;
785 /* detailed rx_errors: */
786 unsigned long rx_length_errors;
787 unsigned long rx_over_errors; /* receiver ring buff overflow */
788 unsigned long rx_crc_errors; /* recved pkt with crc error */
789 unsigned long rx_frame_errors; /* recv'd frame alignment error */
790 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
791 unsigned long rx_missed_errors; /* receiver missed packet */
792 /* detailed tx_errors */
793 unsigned long tx_aborted_errors;
794 unsigned long tx_carrier_errors;
795 unsigned long tx_fifo_errors;
796 unsigned long tx_heartbeat_errors;
797 unsigned long tx_window_errors;
801 struct interface *next, *prev;
802 char name[IFNAMSIZ]; /* interface name */
803 short type; /* if type */
804 short flags; /* various flags */
805 int metric; /* routing metric */
806 int mtu; /* MTU value */
807 int tx_queue_len; /* transmit queue length */
808 struct ifmap map; /* hardware setup */
809 struct sockaddr addr; /* IP address */
810 struct sockaddr dstaddr; /* P-P IP address */
811 struct sockaddr broadaddr; /* IP broadcast address */
812 struct sockaddr netmask; /* IP network mask */
813 struct sockaddr ipxaddr_bb; /* IPX network address */
814 struct sockaddr ipxaddr_sn; /* IPX network address */
815 struct sockaddr ipxaddr_e3; /* IPX network address */
816 struct sockaddr ipxaddr_e2; /* IPX network address */
817 struct sockaddr ddpaddr; /* Appletalk DDP address */
818 struct sockaddr ecaddr; /* Econet address */
827 char hwaddr[32]; /* HW address */
828 int statistics_valid;
829 struct user_net_device_stats stats; /* statistics */
830 int keepalive; /* keepalive value for SLIP */
831 int outfill; /* outfill value for SLIP */
835 int interface_opt_a = 0; /* show all interfaces */
838 static int opt_i = 0; /* show the statistics */
839 static int opt_v = 0; /* debugging output flag */
841 static int addr_family = 0; /* currently selected AF */
842 #endif /* KEEP_UNUSED */
844 static struct interface *int_list, *int_last;
845 static int skfd = -1; /* generic raw socket desc. */
848 static int sockets_open(int family)
852 static int force = -1;
856 if (get_kernel_revision() < KRELEASE(2, 1, 0))
858 if (access("/proc/net", R_OK))
861 for (aft = aftypes; *aft; aft++) {
862 struct aftype *af = *aft;
863 int type = SOCK_DGRAM;
865 if (af->af == AF_UNSPEC)
867 if (family && family != af->af)
873 /* Check some /proc file first to not stress kmod */
874 if (!family && !force && af->flag_file) {
875 if (access(af->flag_file, R_OK))
879 if (af->af == AF_NETROM)
880 type = SOCK_SEQPACKET;
883 if (af->af == AF_X25)
884 type = SOCK_SEQPACKET;
886 af->fd = socket(af->af, type, 0);
891 bb_error_msg(_("No usable address families found."));
896 /* like strcmp(), but knows about numbers */
897 static int nstrcmp(const char *astr, const char *b)
899 const char *a = astr;
920 return atoi(a) > atoi(b) ? 1 : -1;
925 static struct interface *add_interface(char *name)
927 struct interface *ife, **nextp, *new;
929 for (ife = int_last; ife; ife = ife->prev) {
930 int n = nstrcmp(ife->name, name);
938 safe_strncpy(new->name, name, IFNAMSIZ);
939 nextp = ife ? &ife->next : &int_list;
943 new->next->prev = new;
951 static int if_readconf(void)
959 /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets
961 skfd2 = get_socket_for_af(AF_INET);
963 bb_perror_msg(("warning: no inet socket available"));
964 /* Try to soldier on with whatever socket we can get hold of. */
965 skfd2 = sockets_open(0);
972 ifc.ifc_len = sizeof(struct ifreq) * numreqs;
973 ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len);
975 if (ioctl(skfd2, SIOCGIFCONF, &ifc) < 0) {
976 perror("SIOCGIFCONF");
979 if (ifc.ifc_len == sizeof(struct ifreq) * numreqs) {
980 /* assume it overflowed and try again */
988 for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) {
989 add_interface(ifr->ifr_name);
999 static char *get_name(char *name, char *p)
1006 if (*p == ':') { /* could be an alias */
1007 char *dot = p, *dotname = name;
1012 if (*p != ':') { /* it wasn't, backup */
1027 static int get_dev_fields(char *bp, struct interface *ife)
1029 switch (procnetdev_vsn) {
1032 "%Lu %Lu %lu %lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu %lu",
1033 &ife->stats.rx_bytes,
1034 &ife->stats.rx_packets,
1035 &ife->stats.rx_errors,
1036 &ife->stats.rx_dropped,
1037 &ife->stats.rx_fifo_errors,
1038 &ife->stats.rx_frame_errors,
1039 &ife->stats.rx_compressed,
1040 &ife->stats.rx_multicast,
1041 &ife->stats.tx_bytes,
1042 &ife->stats.tx_packets,
1043 &ife->stats.tx_errors,
1044 &ife->stats.tx_dropped,
1045 &ife->stats.tx_fifo_errors,
1046 &ife->stats.collisions,
1047 &ife->stats.tx_carrier_errors, &ife->stats.tx_compressed);
1050 sscanf(bp, "%Lu %Lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu",
1051 &ife->stats.rx_bytes,
1052 &ife->stats.rx_packets,
1053 &ife->stats.rx_errors,
1054 &ife->stats.rx_dropped,
1055 &ife->stats.rx_fifo_errors,
1056 &ife->stats.rx_frame_errors,
1057 &ife->stats.tx_bytes,
1058 &ife->stats.tx_packets,
1059 &ife->stats.tx_errors,
1060 &ife->stats.tx_dropped,
1061 &ife->stats.tx_fifo_errors,
1062 &ife->stats.collisions, &ife->stats.tx_carrier_errors);
1063 ife->stats.rx_multicast = 0;
1066 sscanf(bp, "%Lu %lu %lu %lu %lu %Lu %lu %lu %lu %lu %lu",
1067 &ife->stats.rx_packets,
1068 &ife->stats.rx_errors,
1069 &ife->stats.rx_dropped,
1070 &ife->stats.rx_fifo_errors,
1071 &ife->stats.rx_frame_errors,
1072 &ife->stats.tx_packets,
1073 &ife->stats.tx_errors,
1074 &ife->stats.tx_dropped,
1075 &ife->stats.tx_fifo_errors,
1076 &ife->stats.collisions, &ife->stats.tx_carrier_errors);
1077 ife->stats.rx_bytes = 0;
1078 ife->stats.tx_bytes = 0;
1079 ife->stats.rx_multicast = 0;
1085 static inline int procnetdev_version(char *buf)
1087 if (strstr(buf, "compressed"))
1089 if (strstr(buf, "bytes"))
1094 static int if_readlist_proc(char *target)
1096 static int proc_read;
1099 struct interface *ife;
1107 fh = fopen(_PATH_PROCNET_DEV, "r");
1109 bb_perror_msg(_("Warning: cannot open %s. Limited output."), _PATH_PROCNET_DEV);
1110 return if_readconf();
1112 fgets(buf, sizeof buf, fh); /* eat line */
1113 fgets(buf, sizeof buf, fh);
1115 #if 0 /* pretty, but can't cope with missing fields */
1116 fmt = proc_gen_fmt(_PATH_PROCNET_DEV, 1, fh, "face", "", /* parsed separately */
1123 "compressed", "%lu",
1131 "carrier", "%lu", "compressed", "%lu", NULL);
1135 procnetdev_vsn = procnetdev_version(buf);
1139 while (fgets(buf, sizeof buf, fh)) {
1140 char *s, name[IFNAMSIZ];
1142 s = get_name(name, buf);
1143 ife = add_interface(name);
1144 get_dev_fields(s, ife);
1145 ife->statistics_valid = 1;
1146 if (target && !strcmp(target, name))
1150 perror(_PATH_PROCNET_DEV);
1161 static int if_readlist(void)
1163 int err = if_readlist_proc(NULL);
1166 err = if_readconf();
1170 static int for_all_interfaces(int (*doit) (struct interface *, void *),
1173 struct interface *ife;
1175 if (!int_list && (if_readlist() < 0))
1177 for (ife = int_list; ife; ife = ife->next) {
1178 int err = doit(ife, cookie);
1186 /* Support for fetching an IPX address */
1189 static int ipx_getaddr(int sock, int ft, struct ifreq *ifr)
1191 ((struct sockaddr_ipx *) &ifr->ifr_addr)->sipx_type = ft;
1192 return ioctl(sock, SIOCGIFADDR, ifr);
1197 /* Fetch the interface configuration from the kernel. */
1198 static int if_fetch(struct interface *ife)
1202 char *ifname = ife->name;
1204 strcpy(ifr.ifr_name, ifname);
1205 if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0)
1207 ife->flags = ifr.ifr_flags;
1209 strcpy(ifr.ifr_name, ifname);
1210 if (ioctl(skfd, SIOCGIFHWADDR, &ifr) < 0)
1211 memset(ife->hwaddr, 0, 32);
1213 memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8);
1215 ife->type = ifr.ifr_hwaddr.sa_family;
1217 strcpy(ifr.ifr_name, ifname);
1218 if (ioctl(skfd, SIOCGIFMETRIC, &ifr) < 0)
1221 ife->metric = ifr.ifr_metric;
1223 strcpy(ifr.ifr_name, ifname);
1224 if (ioctl(skfd, SIOCGIFMTU, &ifr) < 0)
1227 ife->mtu = ifr.ifr_mtu;
1230 if (ife->type == ARPHRD_SLIP || ife->type == ARPHRD_CSLIP ||
1231 ife->type == ARPHRD_SLIP6 || ife->type == ARPHRD_CSLIP6 ||
1232 ife->type == ARPHRD_ADAPT) {
1234 strcpy(ifr.ifr_name, ifname);
1235 if (ioctl(skfd, SIOCGOUTFILL, &ifr) < 0)
1238 ife->outfill = (unsigned int) ifr.ifr_data;
1240 #ifdef SIOCGKEEPALIVE
1241 strcpy(ifr.ifr_name, ifname);
1242 if (ioctl(skfd, SIOCGKEEPALIVE, &ifr) < 0)
1245 ife->keepalive = (unsigned int) ifr.ifr_data;
1250 strcpy(ifr.ifr_name, ifname);
1251 if (ioctl(skfd, SIOCGIFMAP, &ifr) < 0)
1252 memset(&ife->map, 0, sizeof(struct ifmap));
1254 memcpy(&ife->map, &ifr.ifr_map, sizeof(struct ifmap));
1256 strcpy(ifr.ifr_name, ifname);
1257 if (ioctl(skfd, SIOCGIFMAP, &ifr) < 0)
1258 memset(&ife->map, 0, sizeof(struct ifmap));
1260 ife->map = ifr.ifr_map;
1262 #ifdef HAVE_TXQUEUELEN
1263 strcpy(ifr.ifr_name, ifname);
1264 if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) < 0)
1265 ife->tx_queue_len = -1; /* unknown value */
1267 ife->tx_queue_len = ifr.ifr_qlen;
1269 ife->tx_queue_len = -1; /* unknown value */
1274 fd = get_socket_for_af(AF_INET);
1276 strcpy(ifr.ifr_name, ifname);
1277 ifr.ifr_addr.sa_family = AF_INET;
1278 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1280 ife->addr = ifr.ifr_addr;
1281 strcpy(ifr.ifr_name, ifname);
1282 if (ioctl(fd, SIOCGIFDSTADDR, &ifr) < 0)
1283 memset(&ife->dstaddr, 0, sizeof(struct sockaddr));
1285 ife->dstaddr = ifr.ifr_dstaddr;
1287 strcpy(ifr.ifr_name, ifname);
1288 if (ioctl(fd, SIOCGIFBRDADDR, &ifr) < 0)
1289 memset(&ife->broadaddr, 0, sizeof(struct sockaddr));
1291 ife->broadaddr = ifr.ifr_broadaddr;
1293 strcpy(ifr.ifr_name, ifname);
1294 if (ioctl(fd, SIOCGIFNETMASK, &ifr) < 0)
1295 memset(&ife->netmask, 0, sizeof(struct sockaddr));
1297 ife->netmask = ifr.ifr_netmask;
1299 memset(&ife->addr, 0, sizeof(struct sockaddr));
1304 /* DDP address maybe ? */
1305 fd = get_socket_for_af(AF_APPLETALK);
1307 strcpy(ifr.ifr_name, ifname);
1308 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1309 ife->ddpaddr = ifr.ifr_addr;
1316 /* Look for IPX addresses with all framing types */
1317 fd = get_socket_for_af(AF_IPX);
1319 strcpy(ifr.ifr_name, ifname);
1320 if (!ipx_getaddr(fd, IPX_FRAME_ETHERII, &ifr)) {
1321 ife->has_ipx_bb = 1;
1322 ife->ipxaddr_bb = ifr.ifr_addr;
1324 strcpy(ifr.ifr_name, ifname);
1325 if (!ipx_getaddr(fd, IPX_FRAME_SNAP, &ifr)) {
1326 ife->has_ipx_sn = 1;
1327 ife->ipxaddr_sn = ifr.ifr_addr;
1329 strcpy(ifr.ifr_name, ifname);
1330 if (!ipx_getaddr(fd, IPX_FRAME_8023, &ifr)) {
1331 ife->has_ipx_e3 = 1;
1332 ife->ipxaddr_e3 = ifr.ifr_addr;
1334 strcpy(ifr.ifr_name, ifname);
1335 if (!ipx_getaddr(fd, IPX_FRAME_8022, &ifr)) {
1336 ife->has_ipx_e2 = 1;
1337 ife->ipxaddr_e2 = ifr.ifr_addr;
1343 /* Econet address maybe? */
1344 fd = get_socket_for_af(AF_ECONET);
1346 strcpy(ifr.ifr_name, ifname);
1347 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1348 ife->ecaddr = ifr.ifr_addr;
1349 ife->has_econet = 1;
1358 static int do_if_fetch(struct interface *ife)
1360 if (if_fetch(ife) < 0) {
1363 if (errno == ENODEV) {
1364 /* Give better error message for this case. */
1365 errmsg = _("Device not found");
1367 errmsg = strerror(errno);
1369 bb_error_msg(_("%s: error fetching interface information: %s\n"),
1376 /* This structure defines hardware protocols and their handlers. */
1382 char *(*print) (unsigned char *);
1383 int (*input) (char *, struct sockaddr *);
1384 int (*activate) (int fd);
1385 int suppress_null_addr;
1388 static struct hwtype unspec_hwtype = {
1389 "unspec", "UNSPEC", -1, 0,
1390 UNSPEC_print, NULL, NULL
1393 static struct hwtype loop_hwtype = {
1394 "loop", "Local Loopback", ARPHRD_LOOPBACK, 0,
1399 #include <net/if_arp.h>
1401 #if __GLIBC__ >=2 && __GLIBC_MINOR >= 1
1402 #include <net/ethernet.h>
1404 #include <linux/if_ether.h>
1407 /* Display an Ethernet address in readable format. */
1408 static char *pr_ether(unsigned char *ptr)
1410 static char buff[64];
1412 snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X",
1413 (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
1414 (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
1420 /* Input an Ethernet address and convert to binary. */
1421 static int in_ether(char *bufp, struct sockaddr *sap)
1428 sap->sa_family = ether_hwtype.type;
1433 while ((*bufp != '\0') && (i < ETH_ALEN)) {
1438 else if (c >= 'a' && c <= 'f')
1440 else if (c >= 'A' && c <= 'F')
1444 bb_error_msg(_("in_ether(%s): invalid ether address!\n"), orig);
1453 else if (c >= 'a' && c <= 'f')
1454 val |= c - 'a' + 10;
1455 else if (c >= 'A' && c <= 'F')
1456 val |= c - 'A' + 10;
1457 else if (c == ':' || c == 0)
1461 bb_error_msg(_("in_ether(%s): invalid ether address!"), orig);
1468 *ptr++ = (unsigned char) (val & 0377);
1471 /* We might get a semicolon here - not required. */
1474 if (i == ETH_ALEN) {
1475 bb_error_msg(_("in_ether(%s): trailing : ignored!"), orig);
1483 /* That's it. Any trailing junk? */
1484 if ((i == ETH_ALEN) && (*bufp != '\0')) {
1485 bb_error_msg(_("in_ether(%s): trailing junk!"), orig);
1489 bb_error_msg("in_ether(%s): %s", orig, pr_ether(sap->sa_data));
1494 #endif /* KEEP_UNUSED */
1497 static struct hwtype ether_hwtype = {
1498 "ether", "Ethernet", ARPHRD_ETHER, ETH_ALEN,
1499 pr_ether, NULL /* UNUSED in_ether */ , NULL
1503 #endif /* HAVE_HWETHER */
1508 #include <net/if_arp.h>
1511 /* Start the PPP encapsulation on the file descriptor. */
1512 static int do_ppp(int fd)
1514 bb_error_msg(_("You cannot start PPP with this program."));
1517 #endif /* KEEP_UNUSED */
1519 static struct hwtype ppp_hwtype = {
1520 "ppp", "Point-Point Protocol", ARPHRD_PPP, 0,
1521 NULL, NULL, NULL /* UNUSED do_ppp */ , 0
1525 #endif /* HAVE_PPP */
1527 static struct hwtype *hwtypes[] = {
1549 #ifdef ARPHRD_IEEE802_TR
1602 static short sVhwinit = 0;
1604 static void hwinit()
1606 loop_hwtype.title = _("Local Loopback");
1607 unspec_hwtype.title = _("UNSPEC");
1609 slip_hwtype.title = _("Serial Line IP");
1610 cslip_hwtype.title = _("VJ Serial Line IP");
1611 slip6_hwtype.title = _("6-bit Serial Line IP");
1612 cslip6_hwtype.title = _("VJ 6-bit Serial Line IP");
1613 adaptive_hwtype.title = _("Adaptive Serial Line IP");
1616 ether_hwtype.title = _("Ethernet");
1619 ash_hwtype.title = _("Ash");
1622 fddi_hwtype.title = _("Fiber Distributed Data Interface");
1625 hippi_hwtype.title = _("HIPPI");
1628 ax25_hwtype.title = _("AMPR AX.25");
1631 rose_hwtype.title = _("AMPR ROSE");
1634 netrom_hwtype.title = _("AMPR NET/ROM");
1637 x25_hwtype.title = _("generic X.25");
1640 tunnel_hwtype.title = _("IPIP Tunnel");
1643 ppp_hwtype.title = _("Point-to-Point Protocol");
1646 hdlc_hwtype.title = _("(Cisco)-HDLC");
1647 lapb_hwtype.title = _("LAPB");
1650 arcnet_hwtype.title = _("ARCnet");
1653 dlci_hwtype.title = _("Frame Relay DLCI");
1654 frad_hwtype.title = _("Frame Relay Access Device");
1657 sit_hwtype.title = _("IPv6-in-IPv4");
1660 irda_hwtype.title = _("IrLAP");
1663 tr_hwtype.title = _("16/4 Mbps Token Ring");
1664 #ifdef ARPHRD_IEEE802_TR
1665 tr_hwtype1.title = _("16/4 Mbps Token Ring (New)");
1669 ec_hwtype.title = _("Econet");
1673 #endif /* KEEP_UNUSED */
1676 static const char *if_port_text[][4] = {
1677 /* Keep in step with <linux/netdevice.h> */
1678 {"unknown", NULL, NULL, NULL},
1679 {"10base2", "bnc", "coax", NULL},
1680 {"10baseT", "utp", "tpe", NULL},
1681 {"AUI", "thick", "db15", NULL},
1682 {"100baseT", NULL, NULL, NULL},
1683 {"100baseTX", NULL, NULL, NULL},
1684 {"100baseFX", NULL, NULL, NULL},
1685 {NULL, NULL, NULL, NULL},
1689 /* Check our hardware type table for this type. */
1690 static struct hwtype *get_hwntype(int type)
1692 struct hwtype **hwp;
1697 #endif /* KEEP_UNUSED */
1700 while (*hwp != NULL) {
1701 if ((*hwp)->type == type)
1708 /* return 1 if address is all zeros */
1709 static int hw_null_address(struct hwtype *hw, void *ap)
1712 unsigned char *address = (unsigned char *) ap;
1714 for (i = 0; i < hw->alen; i++)
1720 static const char TRext[] = "\0\0k\0M";
1722 static void print_bytes_scaled(unsigned long long ull, const char *end)
1724 unsigned long long int_part;
1725 unsigned long frac_part;
1732 for (i = 0; i < 2; i++) {
1733 if (int_part >= 1024) {
1734 frac_part = ((int_part % 1024) * 10) / 1024;
1736 ext += 2; /* Kb, Mb */
1740 printf("X bytes:%Lu (%Lu.%lu %siB)%s", ull, int_part, frac_part, ext, end);
1743 static void ife_print(struct interface *ptr)
1748 int can_compress = 0;
1751 static struct aftype *ipxtype = NULL;
1754 static struct aftype *ectype = NULL;
1757 static struct aftype *ddptype = NULL;
1761 char addr6[40], devname[20];
1762 struct sockaddr_in6 sap;
1763 int plen, scope, dad_status, if_idx;
1767 ap = get_afntype(ptr->addr.sa_family);
1769 ap = get_afntype(0);
1773 if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6)
1776 hw = get_hwntype(hf);
1778 hw = get_hwntype(-1);
1780 printf(_("%-9.9s Link encap:%s "), ptr->name, _(hw->title));
1781 /* For some hardware types (eg Ash, ATM) we don't print the
1782 hardware address if it's null. */
1783 if (hw->print != NULL && (!(hw_null_address(hw, ptr->hwaddr) &&
1784 hw->suppress_null_addr)))
1785 printf(_("HWaddr %s "), hw->print(ptr->hwaddr));
1787 if (ptr->flags & IFF_PORTSEL) {
1788 printf(_("Media:%s"), if_port_text[ptr->map.port][0]);
1789 if (ptr->flags & IFF_AUTOMEDIA)
1790 printf(_("(auto)"));
1797 printf(_(" %s addr:%s "), ap->name,
1798 ap->sprint(&ptr->addr, 1));
1799 if (ptr->flags & IFF_POINTOPOINT) {
1800 printf(_(" P-t-P:%s "), ap->sprint(&ptr->dstaddr, 1));
1802 if (ptr->flags & IFF_BROADCAST) {
1803 printf(_(" Bcast:%s "), ap->sprint(&ptr->broadaddr, 1));
1805 printf(_(" Mask:%s\n"), ap->sprint(&ptr->netmask, 1));
1811 #define IPV6_ADDR_ANY 0x0000U
1813 #define IPV6_ADDR_UNICAST 0x0001U
1814 #define IPV6_ADDR_MULTICAST 0x0002U
1815 #define IPV6_ADDR_ANYCAST 0x0004U
1817 #define IPV6_ADDR_LOOPBACK 0x0010U
1818 #define IPV6_ADDR_LINKLOCAL 0x0020U
1819 #define IPV6_ADDR_SITELOCAL 0x0040U
1821 #define IPV6_ADDR_COMPATv4 0x0080U
1823 #define IPV6_ADDR_SCOPE_MASK 0x00f0U
1825 #define IPV6_ADDR_MAPPED 0x1000U
1826 #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */
1828 if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) {
1830 (f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n",
1831 addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4],
1832 addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope,
1833 &dad_status, devname) != EOF) {
1834 if (!strcmp(devname, ptr->name)) {
1835 sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
1836 addr6p[0], addr6p[1], addr6p[2], addr6p[3],
1837 addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
1838 inet_pton(AF_INET6, addr6,
1839 (struct sockaddr *) &sap.sin6_addr);
1840 sap.sin6_family = AF_INET6;
1841 printf(_(" inet6 addr: %s/%d"),
1842 inet6_aftype.sprint((struct sockaddr *) &sap, 1),
1844 printf(_(" Scope:"));
1845 switch (scope & IPV6_ADDR_SCOPE_MASK) {
1847 printf(_("Global"));
1849 case IPV6_ADDR_LINKLOCAL:
1852 case IPV6_ADDR_SITELOCAL:
1855 case IPV6_ADDR_COMPATv4:
1856 printf(_("Compat"));
1858 case IPV6_ADDR_LOOPBACK:
1862 printf(_("Unknown"));
1872 if (ipxtype == NULL)
1873 ipxtype = get_afntype(AF_IPX);
1875 if (ipxtype != NULL) {
1876 if (ptr->has_ipx_bb)
1877 printf(_(" IPX/Ethernet II addr:%s\n"),
1878 ipxtype->sprint(&ptr->ipxaddr_bb, 1));
1879 if (ptr->has_ipx_sn)
1880 printf(_(" IPX/Ethernet SNAP addr:%s\n"),
1881 ipxtype->sprint(&ptr->ipxaddr_sn, 1));
1882 if (ptr->has_ipx_e2)
1883 printf(_(" IPX/Ethernet 802.2 addr:%s\n"),
1884 ipxtype->sprint(&ptr->ipxaddr_e2, 1));
1885 if (ptr->has_ipx_e3)
1886 printf(_(" IPX/Ethernet 802.3 addr:%s\n"),
1887 ipxtype->sprint(&ptr->ipxaddr_e3, 1));
1892 if (ddptype == NULL)
1893 ddptype = get_afntype(AF_APPLETALK);
1894 if (ddptype != NULL) {
1896 printf(_(" EtherTalk Phase 2 addr:%s\n"),
1897 ddptype->sprint(&ptr->ddpaddr, 1));
1903 ectype = get_afntype(AF_ECONET);
1904 if (ectype != NULL) {
1905 if (ptr->has_econet)
1906 printf(_(" econet addr:%s\n"),
1907 ectype->sprint(&ptr->ecaddr, 1));
1912 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */
1913 if (ptr->flags == 0)
1914 printf(_("[NO FLAGS] "));
1915 if (ptr->flags & IFF_UP)
1917 if (ptr->flags & IFF_BROADCAST)
1918 printf(_("BROADCAST "));
1919 if (ptr->flags & IFF_DEBUG)
1920 printf(_("DEBUG "));
1921 if (ptr->flags & IFF_LOOPBACK)
1922 printf(_("LOOPBACK "));
1923 if (ptr->flags & IFF_POINTOPOINT)
1924 printf(_("POINTOPOINT "));
1925 if (ptr->flags & IFF_NOTRAILERS)
1926 printf(_("NOTRAILERS "));
1927 if (ptr->flags & IFF_RUNNING)
1928 printf(_("RUNNING "));
1929 if (ptr->flags & IFF_NOARP)
1930 printf(_("NOARP "));
1931 if (ptr->flags & IFF_PROMISC)
1932 printf(_("PROMISC "));
1933 if (ptr->flags & IFF_ALLMULTI)
1934 printf(_("ALLMULTI "));
1935 if (ptr->flags & IFF_SLAVE)
1936 printf(_("SLAVE "));
1937 if (ptr->flags & IFF_MASTER)
1938 printf(_("MASTER "));
1939 if (ptr->flags & IFF_MULTICAST)
1940 printf(_("MULTICAST "));
1942 if (ptr->flags & IFF_DYNAMIC)
1943 printf(_("DYNAMIC "));
1945 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */
1946 printf(_(" MTU:%d Metric:%d"), ptr->mtu, ptr->metric ? ptr->metric : 1);
1947 #ifdef SIOCSKEEPALIVE
1948 if (ptr->outfill || ptr->keepalive)
1949 printf(_(" Outfill:%d Keepalive:%d"), ptr->outfill, ptr->keepalive);
1953 /* If needed, display the interface statistics. */
1955 if (ptr->statistics_valid) {
1956 /* XXX: statistics are currently only printed for the primary address,
1957 * not for the aliases, although strictly speaking they're shared
1963 ("RX packets:%Lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
1964 ptr->stats.rx_packets, ptr->stats.rx_errors,
1965 ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,
1966 ptr->stats.rx_frame_errors);
1968 printf(_(" compressed:%lu\n"),
1969 ptr->stats.rx_compressed);
1972 ("TX packets:%Lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
1973 ptr->stats.tx_packets, ptr->stats.tx_errors,
1974 ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,
1975 ptr->stats.tx_carrier_errors);
1976 printf(_(" collisions:%lu "), ptr->stats.collisions);
1978 printf(_("compressed:%lu "), ptr->stats.tx_compressed);
1979 if (ptr->tx_queue_len != -1)
1980 printf(_("txqueuelen:%d "), ptr->tx_queue_len);
1982 print_bytes_scaled(ptr->stats.rx_bytes, " T");
1983 print_bytes_scaled(ptr->stats.tx_bytes, "\n");
1987 if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma ||
1988 ptr->map.base_addr)) {
1991 printf(_("Interrupt:%d "), ptr->map.irq);
1992 if (ptr->map.base_addr >= 0x100) /* Only print devices using it for
1994 printf(_("Base address:0x%lx "),
1995 (unsigned long) ptr->map.base_addr);
1996 if (ptr->map.mem_start) {
1997 printf(_("Memory:%lx-%lx "), ptr->map.mem_start,
2001 printf(_("DMA chan:%x "), ptr->map.dma);
2008 static int do_if_print(struct interface *ife, void *cookie)
2010 int *opt_a = (int *) cookie;
2013 res = do_if_fetch(ife);
2015 if ((ife->flags & IFF_UP) || *opt_a)
2021 static struct interface *lookup_interface(char *name)
2023 struct interface *ife = NULL;
2025 if (if_readlist_proc(name) < 0)
2027 ife = add_interface(name);
2031 /* for ipv4 add/del modes */
2032 static int if_print(char *ifname)
2037 res = for_all_interfaces(do_if_print, &interface_opt_a);
2039 struct interface *ife;
2041 ife = lookup_interface(ifname);
2042 res = do_if_fetch(ife);
2049 int display_interfaces(char *ifname)
2053 /* Create a channel to the NET kernel. */
2054 if ((skfd = sockets_open(0)) < 0) {
2055 bb_perror_msg_and_die("socket");
2058 /* Do we have to show the current setup? */
2059 status = if_print(ifname);