2 * ifconfig This file contains an implementation of the command
3 * that either displays or sets the characteristics of
4 * one or more of the system's networking interfaces.
6 * Version: $Id: interface.c,v 1.3 2001/06/01 21:47:15 andersen Exp $
8 * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
9 * and others. Copyright 1993 MicroWalt Corporation
11 * This program is free software; you can redistribute it
12 * and/or modify it under the terms of the GNU General
13 * Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at
15 * your option) any later version.
17 * Patched to support 'add' and 'del' keywords for INET(4) addresses
18 * by Mrs. Brisby <mrs.brisby@nimh.org>
20 * {1.34} - 19980630 - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
21 * - gettext instead of catgets for i18n
22 * 10/1998 - Andi Kleen. Use interface list primitives.
23 * 20001008 - Bernd Eckenfels, Patch from RH for setting mtu
24 * (default AF was wrong)
25 * stolen from net-tools-1.59 and stripped down for busybox by
26 * Erik Andersen <andersee@debian.org>
30 * Heavily modified by Manuel Novoa III Mar 12, 2001
32 * Pruned unused code using KEEP_UNUSED define.
33 * Added print_bytes_scaled function to reduce code size.
34 * Added some (potentially) missing defines.
35 * Improved display support for -a and for a named interface.
38 /* #define KEEP_UNUSED */
56 * Device Hardware types.
59 #define HAVE_HWETHER 1
65 #include <sys/types.h>
66 #include <sys/socket.h>
67 #include <sys/ioctl.h>
68 #include <netinet/in.h>
70 #include <net/if_arp.h>
79 #include <netinet/in.h>
80 #include <arpa/inet.h>
81 #include <arpa/nameser.h>
85 #define _PATH_PROCNET_DEV "/proc/net/dev"
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;
92 /* Ugh. But libc5 doesn't provide POSIX types. */
93 #include <asm/types.h>
97 #include <linux/if_slip.h>
104 * This is in linux/include/net/ipv6.h.
108 struct in6_addr ifr6_addr;
109 __u32 ifr6_prefixlen;
110 unsigned int ifr6_ifindex;
115 #endif /* HAVE_AFINET6 */
118 #if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
119 #include <netipx/ipx.h>
125 #include "net-support.h"
126 #include "pathnames.h"
129 #include "interface.h"
134 /* Defines for glibc2.0 users. */
135 #ifndef SIOCSIFTXQLEN
136 #define SIOCSIFTXQLEN 0x8943
137 #define SIOCGIFTXQLEN 0x8942
140 /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
142 #define ifr_qlen ifr_ifru.ifru_mtu
145 #ifndef HAVE_TXQUEUELEN
146 #define HAVE_TXQUEUELEN 1
150 #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
153 /* This structure defines protocol families and their handlers. */
159 char *(*print) (unsigned char *);
160 char *(*sprint) (struct sockaddr *, int numeric);
161 int (*input) (int type, char *bufp, struct sockaddr *);
162 void (*herror) (char *text);
163 int (*rprint) (int options);
164 int (*rinput) (int typ, int ext, char **argv);
167 int (*getmask) (char *src, struct sockaddr * mask, char *name);
173 static struct aftype *aftypes[];
182 static int flag_ax25;
188 static int flag_netrom;
190 static int flag_inet;
192 static int flag_inet6;
195 static int flag_econet;
198 static int flag_x25 = 0;
205 static struct aftrans_t {
213 "ax25", "ax25", &flag_ax25
217 "ip", "inet", &flag_inet
221 "ip6", "inet6", &flag_inet6
226 "ipx", "ipx", &flag_ipx
231 "appletalk", "ddp", &flag_ddp
236 "netrom", "netrom", &flag_netrom
240 "inet", "inet", &flag_inet
244 "inet6", "inet6", &flag_inet6
249 "ddp", "ddp", &flag_ddp
253 "unix", "unix", &flag_unx
256 "tcpip", "inet", &flag_inet
260 "econet", "ec", &flag_econet
265 "x25", "x25", &flag_x25
270 "ash", "ash", &flag_ash
278 static char afname[256] = "";
279 #endif /* KEEP_UNUSED */
283 /* Display a UNIX domain address. */
284 static char *UNIX_print(unsigned char *ptr)
290 /* Display a UNIX domain address. */
291 static char *UNIX_sprint(struct sockaddr *sap, int numeric)
295 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
296 return safe_strncpy(buf, _("[NONE SET]"), sizeof(buf));
297 return (UNIX_print(sap->sa_data));
301 static struct aftype unix_aftype =
303 "unix", "UNIX Domain", AF_UNIX, 0,
304 UNIX_print, UNIX_sprint, NULL, NULL,
309 #endif /* HAVE_AFUNIX */
314 extern int h_errno; /* some netdb.h versions don't export this */
319 struct sockaddr_in addr;
325 static struct addr *INET_nn = NULL; /* addr-to-name cache */
328 static int INET_resolve(char *name, struct sockaddr_in *sin, int hostfirst)
334 sin->sin_family = AF_INET;
337 /* Default is special, meaning 0.0.0.0. */
338 if (!strcmp(name, "default")) {
339 sin->sin_addr.s_addr = INADDR_ANY;
342 /* Look to see if it's a dotted quad. */
343 if (inet_aton(name, &sin->sin_addr)) {
346 /* If we expect this to be a hostname, try hostname database first */
348 if (hostfirst) fprintf (stderr, "gethostbyname (%s)\n", name);
351 (hp = gethostbyname(name)) != (struct hostent *) NULL) {
352 memcpy((char *) &sin->sin_addr, (char *) hp->h_addr_list[0],
353 sizeof(struct in_addr));
356 /* Try the NETWORKS database to see if this is a known network. */
358 fprintf (stderr, "getnetbyname (%s)\n", name);
360 if ((np = getnetbyname(name)) != (struct netent *) NULL) {
361 sin->sin_addr.s_addr = htonl(np->n_net);
365 /* Don't try again */
371 _res.options |= RES_DEBUG;
375 fprintf (stderr, "gethostbyname (%s)\n", name);
377 if ((hp = gethostbyname(name)) == (struct hostent *) NULL) {
381 memcpy((char *) &sin->sin_addr, (char *) hp->h_addr_list[0],
382 sizeof(struct in_addr));
386 #endif /* KEEP_UNUSED */
388 /* numeric: & 0x8000: default instead of *,
389 * & 0x4000: host instead of net,
390 * & 0x0fff: don't resolve
392 static int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
393 int numeric, unsigned int netmask)
398 unsigned long ad, host_ad;
402 if (s_in->sin_family != AF_INET) {
404 fprintf(stderr, _("rresolve: unsupport address family %d !\n"), s_in->sin_family);
406 errno = EAFNOSUPPORT;
409 ad = (unsigned long) s_in->sin_addr.s_addr;
411 fprintf (stderr, "rresolve: %08lx, mask %08x, num %08x \n", ad, netmask, numeric);
413 if (ad == INADDR_ANY) {
414 if ((numeric & 0x0FFF) == 0) {
415 if (numeric & 0x8000)
416 safe_strncpy(name, "default", len);
418 safe_strncpy(name, "*", len);
422 if (numeric & 0x0FFF) {
423 safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
427 if ((ad & (~netmask)) != 0 || (numeric & 0x4000))
434 if (pn->addr.sin_addr.s_addr == ad && pn->host == host) {
435 safe_strncpy(name, pn->name, len);
437 fprintf (stderr, "rresolve: found %s %08lx in cache\n", (host? "host": "net"), ad);
449 fprintf (stderr, "gethostbyaddr (%08lx)\n", ad);
451 ent = gethostbyaddr((char *) &ad, 4, AF_INET);
453 safe_strncpy(name, ent->h_name, len);
456 fprintf (stderr, "getnetbyaddr (%08lx)\n", host_ad);
458 np = getnetbyaddr(host_ad, AF_INET);
460 safe_strncpy(name, np->n_name, len);
462 if ((ent == NULL) && (np == NULL))
463 safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
464 pn = (struct addr *) xmalloc(sizeof(struct addr));
468 pn->name = (char *) xmalloc(strlen(name) + 1);
469 strcpy(pn->name, name);
476 static void INET_reserror(char *text)
481 /* Display an Internet socket address. */
482 static char *INET_print(unsigned char *ptr)
484 return (inet_ntoa((*(struct in_addr *) ptr)));
486 #endif /* KEEP_UNUSED */
488 /* Display an Internet socket address. */
489 static char *INET_sprint(struct sockaddr *sap, int numeric)
491 static char buff[128];
493 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
494 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
496 if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
497 numeric, 0xffffff00) != 0)
504 static char *INET_sprintmask(struct sockaddr *sap, int numeric,
505 unsigned int netmask)
507 static char buff[128];
509 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
510 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
511 if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
512 numeric, netmask) != 0)
517 static int INET_getsock(char *bufp, struct sockaddr *sap)
519 char *sp = bufp, *bp;
522 struct sockaddr_in *sin;
524 sin = (struct sockaddr_in *) sap;
525 sin->sin_family = AF_INET;
530 for (i = 0; i < sizeof(sin->sin_addr.s_addr); i++) {
533 if ((*sp >= 'A') && (*sp <= 'F'))
534 bp[i] |= (int) (*sp - 'A') + 10;
535 else if ((*sp >= '0') && (*sp <= '9'))
536 bp[i] |= (int) (*sp - '0');
544 if ((*sp >= 'A') && (*sp <= 'F'))
545 bp[i] |= (int) (*sp - 'A') + 10;
546 else if ((*sp >= '0') && (*sp <= '9'))
547 bp[i] |= (int) (*sp - '0');
553 sin->sin_addr.s_addr = htonl(val);
558 static int INET_input(int type, char *bufp, struct sockaddr *sap)
562 return (INET_getsock(bufp, sap));
564 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1));
566 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0));
570 static int INET_getnetmask(char *adr, struct sockaddr *m, char *name)
572 struct sockaddr_in *mask = (struct sockaddr_in *) m;
576 if ((slash = strchr(adr, '/')) == NULL)
580 prefix = strtoul(slash, &end, 0);
585 sprintf(name, "/%d", prefix);
587 mask->sin_family = AF_INET;
588 mask->sin_addr.s_addr = htonl(~(0xffffffffU >> prefix));
591 #endif /* KEEP_UNUSED */
593 static struct aftype inet_aftype =
595 "inet", "DARPA Internet", AF_INET, sizeof(unsigned long),
596 NULL /* UNUSED INET_print */, INET_sprint,
597 NULL /* UNUSED INET_input */, NULL /* UNUSED INET_reserror */,
598 NULL /*INET_rprint */ , NULL /*INET_rinput */ ,
599 NULL /* UNUSED INET_getnetmask */,
604 #endif /* HAVE_AFINET */
606 /* Display an UNSPEC address. */
607 static char *UNSPEC_print(unsigned char *ptr)
609 static char buff[sizeof(struct sockaddr)*3+1];
614 for (i = 0; i < sizeof(struct sockaddr); i++) {
615 /* careful -- not every libc's sprintf returns # bytes written */
616 sprintf(pos, "%02X-", (*ptr++ & 0377));
619 /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */
624 /* Display an UNSPEC socket address. */
625 static char *UNSPEC_sprint(struct sockaddr *sap, int numeric)
629 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
630 return safe_strncpy(buf, _("[NONE SET]"), sizeof(buf));
631 return (UNSPEC_print(sap->sa_data));
634 static struct aftype unspec_aftype =
636 "unspec", "UNSPEC", AF_UNSPEC, 0,
637 UNSPEC_print, UNSPEC_sprint, NULL, NULL,
641 static struct aftype *aftypes[] =
681 static short sVafinit = 0;
685 unspec_aftype.title = _("UNSPEC");
687 unix_aftype.title = _("UNIX Domain");
690 inet_aftype.title = _("DARPA Internet");
693 inet6_aftype.title = _("IPv6");
696 ax25_aftype.title = _("AMPR AX.25");
699 netrom_aftype.title = _("AMPR NET/ROM");
702 ipx_aftype.title = _("Novell IPX");
705 ddp_aftype.title = _("Appletalk DDP");
708 ec_aftype.title = _("Econet");
711 x25_aftype.title = _("CCITT X.25");
714 rose_aftype.title = _("AMPR ROSE");
717 ash_aftype.title = _("Ash");
722 static int aftrans_opt(const char *arg)
724 struct aftrans_t *paft;
728 safe_strncpy(buf, arg, sizeof(buf));
734 tmp2 = strchr(tmp1, ',');
740 for (paft = aftrans; paft->alias; paft++) {
741 if (strcmp(tmp1, paft->alias))
743 if (strlen(paft->name) + strlen(afname) + 1 >= sizeof(afname)) {
744 fprintf(stderr, _("Too much address family arguments.\n"));
751 strcat(afname, paft->name);
755 fprintf(stderr, _("Unknown address family `%s'.\n"), tmp1);
764 /* set the default AF list from the program name or a constant value */
765 static void aftrans_def(char *tool, char *argv0, char *dflt)
770 strcpy(afname, dflt);
772 if (!(tmp = strrchr(argv0, '/')))
773 tmp = argv0; /* no slash?! */
777 if (!(buf = strdup(tmp)))
780 if (strlen(tool) >= strlen(tmp)) {
784 tmp = buf + (strlen(tmp) - strlen(tool));
786 if (strcmp(tmp, tool) != 0) {
791 if ((tmp = strchr(buf, '_')))
795 if (aftrans_opt(buf))
801 /* Check our protocol family table for this family. */
802 static struct aftype *get_aftype(const char *name)
809 #endif /* KEEP_UNUSED */
812 while (*afp != NULL) {
813 if (!strcmp((*afp)->name, name))
817 if (strchr(name, ','))
818 fprintf(stderr, _("Please don't supply more than one address family.\n"));
821 #endif /* KEEP_UNUSED */
823 /* Check our protocol family table for this family. */
824 static struct aftype *get_afntype(int af)
831 #endif /* KEEP_UNUSED */
834 while (*afp != NULL) {
835 if ((*afp)->af == af)
842 /* Check our protocol family table for this family and return its socket */
843 static int get_socket_for_af(int af)
850 #endif /* KEEP_UNUSED */
853 while (*afp != NULL) {
854 if ((*afp)->af == af)
862 /* type: 0=all, 1=getroute */
863 static void print_aflist(int type) {
871 #endif /* KEEP_UNUSED */
874 while (*afp != NULL) {
875 if ((type == 1 && ((*afp)->rprint == NULL)) || ((*afp)->af == 0)) {
878 if ((count % 3) == 0) fprintf(stderr,count?"\n ":" ");
879 txt = (*afp)->name; if (!txt) txt = "..";
880 fprintf(stderr,"%s (%s) ",txt,_((*afp)->title));
884 fprintf(stderr,"\n");
886 #endif /* KEEP_UNUSED */
888 struct user_net_device_stats {
889 unsigned long long rx_packets; /* total packets received */
890 unsigned long long tx_packets; /* total packets transmitted */
891 unsigned long long rx_bytes; /* total bytes received */
892 unsigned long long tx_bytes; /* total bytes transmitted */
893 unsigned long rx_errors; /* bad packets received */
894 unsigned long tx_errors; /* packet transmit problems */
895 unsigned long rx_dropped; /* no space in linux buffers */
896 unsigned long tx_dropped; /* no space available in linux */
897 unsigned long rx_multicast; /* multicast packets received */
898 unsigned long rx_compressed;
899 unsigned long tx_compressed;
900 unsigned long collisions;
902 /* detailed rx_errors: */
903 unsigned long rx_length_errors;
904 unsigned long rx_over_errors; /* receiver ring buff overflow */
905 unsigned long rx_crc_errors; /* recved pkt with crc error */
906 unsigned long rx_frame_errors; /* recv'd frame alignment error */
907 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
908 unsigned long rx_missed_errors; /* receiver missed packet */
909 /* detailed tx_errors */
910 unsigned long tx_aborted_errors;
911 unsigned long tx_carrier_errors;
912 unsigned long tx_fifo_errors;
913 unsigned long tx_heartbeat_errors;
914 unsigned long tx_window_errors;
918 struct interface *next, *prev;
919 char name[IFNAMSIZ]; /* interface name */
920 short type; /* if type */
921 short flags; /* various flags */
922 int metric; /* routing metric */
923 int mtu; /* MTU value */
924 int tx_queue_len; /* transmit queue length */
925 struct ifmap map; /* hardware setup */
926 struct sockaddr addr; /* IP address */
927 struct sockaddr dstaddr; /* P-P IP address */
928 struct sockaddr broadaddr; /* IP broadcast address */
929 struct sockaddr netmask; /* IP network mask */
930 struct sockaddr ipxaddr_bb; /* IPX network address */
931 struct sockaddr ipxaddr_sn; /* IPX network address */
932 struct sockaddr ipxaddr_e3; /* IPX network address */
933 struct sockaddr ipxaddr_e2; /* IPX network address */
934 struct sockaddr ddpaddr; /* Appletalk DDP address */
935 struct sockaddr ecaddr; /* Econet address */
944 char hwaddr[32]; /* HW address */
945 int statistics_valid;
946 struct user_net_device_stats stats; /* statistics */
947 int keepalive; /* keepalive value for SLIP */
948 int outfill; /* outfill value for SLIP */
952 int interface_opt_a = 0; /* show all interfaces */
955 static int opt_i = 0; /* show the statistics */
956 static int opt_v = 0; /* debugging output flag */
958 static int addr_family = 0; /* currently selected AF */
959 #endif /* KEEP_UNUSED */
961 static struct interface *int_list, *int_last;
962 static int skfd = -1; /* generic raw socket desc. */
965 static int sockets_open(int family)
969 static int force = -1;
973 if (get_kernel_revision() < KRELEASE(2, 1, 0))
975 if (access("/proc/net", R_OK))
978 for (aft = aftypes; *aft; aft++) {
979 struct aftype *af = *aft;
980 int type = SOCK_DGRAM;
981 if (af->af == AF_UNSPEC)
983 if (family && family != af->af)
989 /* Check some /proc file first to not stress kmod */
990 if (!family && !force && af->flag_file) {
991 if (access(af->flag_file, R_OK))
995 if (af->af == AF_NETROM)
996 type = SOCK_SEQPACKET;
999 if (af->af == AF_X25)
1000 type = SOCK_SEQPACKET;
1002 af->fd = socket(af->af, type, 0);
1007 fprintf(stderr, _("No usable address families found.\n"));
1011 /* like strcmp(), but knows about numbers */
1012 static int nstrcmp(const char *astr, const char *b)
1014 const char *a = astr;
1035 return atoi(a) > atoi(b) ? 1 : -1;
1040 static struct interface *add_interface(char *name)
1042 struct interface *ife, **nextp, *new;
1044 for (ife = int_last; ife; ife = ife->prev) {
1045 int n = nstrcmp(ife->name, name);
1052 safe_strncpy(new->name, name, IFNAMSIZ);
1053 nextp = ife ? &ife->next : &int_list;
1057 new->next->prev = new;
1065 static int if_readconf(void)
1071 /* XXX Should this re-use the global skfd? */
1074 /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets
1076 skfd2 = get_socket_for_af(AF_INET);
1078 fprintf(stderr, _("warning: no inet socket available: %s\n"),
1080 /* Try to soldier on with whatever socket we can get hold of. */
1081 skfd2 = sockets_open(0);
1088 ifc.ifc_len = sizeof(struct ifreq) * numreqs;
1089 ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len);
1091 if (ioctl(skfd2, SIOCGIFCONF, &ifc) < 0) {
1092 perror("SIOCGIFCONF");
1095 if (ifc.ifc_len == sizeof(struct ifreq) * numreqs) {
1096 /* assume it overflowed and try again */
1104 for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) {
1105 add_interface(ifr->ifr_name);
1115 static char *get_name(char *name, char *p)
1122 if (*p == ':') { /* could be an alias */
1123 char *dot = p, *dotname = name;
1127 if (*p != ':') { /* it wasn't, backup */
1142 static int get_dev_fields(char *bp, struct interface *ife)
1144 switch (procnetdev_vsn) {
1147 "%Lu %Lu %lu %lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu %lu",
1148 &ife->stats.rx_bytes,
1149 &ife->stats.rx_packets,
1150 &ife->stats.rx_errors,
1151 &ife->stats.rx_dropped,
1152 &ife->stats.rx_fifo_errors,
1153 &ife->stats.rx_frame_errors,
1154 &ife->stats.rx_compressed,
1155 &ife->stats.rx_multicast,
1157 &ife->stats.tx_bytes,
1158 &ife->stats.tx_packets,
1159 &ife->stats.tx_errors,
1160 &ife->stats.tx_dropped,
1161 &ife->stats.tx_fifo_errors,
1162 &ife->stats.collisions,
1163 &ife->stats.tx_carrier_errors,
1164 &ife->stats.tx_compressed);
1167 sscanf(bp, "%Lu %Lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu",
1168 &ife->stats.rx_bytes,
1169 &ife->stats.rx_packets,
1170 &ife->stats.rx_errors,
1171 &ife->stats.rx_dropped,
1172 &ife->stats.rx_fifo_errors,
1173 &ife->stats.rx_frame_errors,
1175 &ife->stats.tx_bytes,
1176 &ife->stats.tx_packets,
1177 &ife->stats.tx_errors,
1178 &ife->stats.tx_dropped,
1179 &ife->stats.tx_fifo_errors,
1180 &ife->stats.collisions,
1181 &ife->stats.tx_carrier_errors);
1182 ife->stats.rx_multicast = 0;
1185 sscanf(bp, "%Lu %lu %lu %lu %lu %Lu %lu %lu %lu %lu %lu",
1186 &ife->stats.rx_packets,
1187 &ife->stats.rx_errors,
1188 &ife->stats.rx_dropped,
1189 &ife->stats.rx_fifo_errors,
1190 &ife->stats.rx_frame_errors,
1192 &ife->stats.tx_packets,
1193 &ife->stats.tx_errors,
1194 &ife->stats.tx_dropped,
1195 &ife->stats.tx_fifo_errors,
1196 &ife->stats.collisions,
1197 &ife->stats.tx_carrier_errors);
1198 ife->stats.rx_bytes = 0;
1199 ife->stats.tx_bytes = 0;
1200 ife->stats.rx_multicast = 0;
1206 static inline int procnetdev_version(char *buf)
1208 if (strstr(buf, "compressed"))
1210 if (strstr(buf, "bytes"))
1215 static int if_readlist_proc(char *target)
1217 static int proc_read;
1220 struct interface *ife;
1228 fh = fopen(_PATH_PROCNET_DEV, "r");
1230 fprintf(stderr, _("Warning: cannot open %s (%s). Limited output.\n"),
1231 _PATH_PROCNET_DEV, strerror(errno));
1232 return if_readconf();
1234 fgets(buf, sizeof buf, fh); /* eat line */
1235 fgets(buf, sizeof buf, fh);
1237 #if 0 /* pretty, but can't cope with missing fields */
1238 fmt = proc_gen_fmt(_PATH_PROCNET_DEV, 1, fh,
1239 "face", "", /* parsed separately */
1246 "compressed", "%lu",
1255 "compressed", "%lu",
1260 procnetdev_vsn = procnetdev_version(buf);
1264 while (fgets(buf, sizeof buf, fh)) {
1265 char *s, name[IFNAMSIZ];
1266 s = get_name(name, buf);
1267 ife = add_interface(name);
1268 get_dev_fields(s, ife);
1269 ife->statistics_valid = 1;
1270 if (target && !strcmp(target,name))
1274 perror(_PATH_PROCNET_DEV);
1286 static int if_readlist(void)
1288 int err = if_readlist_proc(NULL);
1290 err = if_readconf();
1294 static int for_all_interfaces(int (*doit) (struct interface *, void *), void *cookie)
1296 struct interface *ife;
1298 if (!int_list && (if_readlist() < 0))
1300 for (ife = int_list; ife; ife = ife->next) {
1301 int err = doit(ife, cookie);
1308 /* Support for fetching an IPX address */
1311 static int ipx_getaddr(int sock, int ft, struct ifreq *ifr)
1313 ((struct sockaddr_ipx *) &ifr->ifr_addr)->sipx_type = ft;
1314 return ioctl(sock, SIOCGIFADDR, ifr);
1319 /* Fetch the interface configuration from the kernel. */
1320 static int if_fetch(struct interface *ife)
1324 char *ifname = ife->name;
1326 strcpy(ifr.ifr_name, ifname);
1327 if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0)
1329 ife->flags = ifr.ifr_flags;
1331 strcpy(ifr.ifr_name, ifname);
1332 if (ioctl(skfd, SIOCGIFHWADDR, &ifr) < 0)
1333 memset(ife->hwaddr, 0, 32);
1335 memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8);
1337 ife->type = ifr.ifr_hwaddr.sa_family;
1339 strcpy(ifr.ifr_name, ifname);
1340 if (ioctl(skfd, SIOCGIFMETRIC, &ifr) < 0)
1343 ife->metric = ifr.ifr_metric;
1345 strcpy(ifr.ifr_name, ifname);
1346 if (ioctl(skfd, SIOCGIFMTU, &ifr) < 0)
1349 ife->mtu = ifr.ifr_mtu;
1352 if (ife->type == ARPHRD_SLIP || ife->type == ARPHRD_CSLIP ||
1353 ife->type == ARPHRD_SLIP6 || ife->type == ARPHRD_CSLIP6 ||
1354 ife->type == ARPHRD_ADAPT) {
1356 strcpy(ifr.ifr_name, ifname);
1357 if (ioctl(skfd, SIOCGOUTFILL, &ifr) < 0)
1360 ife->outfill = (unsigned int) ifr.ifr_data;
1362 #ifdef SIOCGKEEPALIVE
1363 strcpy(ifr.ifr_name, ifname);
1364 if (ioctl(skfd, SIOCGKEEPALIVE, &ifr) < 0)
1367 ife->keepalive = (unsigned int) ifr.ifr_data;
1372 strcpy(ifr.ifr_name, ifname);
1373 if (ioctl(skfd, SIOCGIFMAP, &ifr) < 0)
1374 memset(&ife->map, 0, sizeof(struct ifmap));
1376 memcpy(&ife->map, &ifr.ifr_map, sizeof(struct ifmap));
1378 strcpy(ifr.ifr_name, ifname);
1379 if (ioctl(skfd, SIOCGIFMAP, &ifr) < 0)
1380 memset(&ife->map, 0, sizeof(struct ifmap));
1382 ife->map = ifr.ifr_map;
1384 #ifdef HAVE_TXQUEUELEN
1385 strcpy(ifr.ifr_name, ifname);
1386 if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) < 0)
1387 ife->tx_queue_len = -1; /* unknown value */
1389 ife->tx_queue_len = ifr.ifr_qlen;
1391 ife->tx_queue_len = -1; /* unknown value */
1396 fd = get_socket_for_af(AF_INET);
1398 strcpy(ifr.ifr_name, ifname);
1399 ifr.ifr_addr.sa_family = AF_INET;
1400 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1402 ife->addr = ifr.ifr_addr;
1403 strcpy(ifr.ifr_name, ifname);
1404 if (ioctl(fd, SIOCGIFDSTADDR, &ifr) < 0)
1405 memset(&ife->dstaddr, 0, sizeof(struct sockaddr));
1407 ife->dstaddr = ifr.ifr_dstaddr;
1409 strcpy(ifr.ifr_name, ifname);
1410 if (ioctl(fd, SIOCGIFBRDADDR, &ifr) < 0)
1411 memset(&ife->broadaddr, 0, sizeof(struct sockaddr));
1413 ife->broadaddr = ifr.ifr_broadaddr;
1415 strcpy(ifr.ifr_name, ifname);
1416 if (ioctl(fd, SIOCGIFNETMASK, &ifr) < 0)
1417 memset(&ife->netmask, 0, sizeof(struct sockaddr));
1419 ife->netmask = ifr.ifr_netmask;
1421 memset(&ife->addr, 0, sizeof(struct sockaddr));
1426 /* DDP address maybe ? */
1427 fd = get_socket_for_af(AF_APPLETALK);
1429 strcpy(ifr.ifr_name, ifname);
1430 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1431 ife->ddpaddr = ifr.ifr_addr;
1438 /* Look for IPX addresses with all framing types */
1439 fd = get_socket_for_af(AF_IPX);
1441 strcpy(ifr.ifr_name, ifname);
1442 if (!ipx_getaddr(fd, IPX_FRAME_ETHERII, &ifr)) {
1443 ife->has_ipx_bb = 1;
1444 ife->ipxaddr_bb = ifr.ifr_addr;
1446 strcpy(ifr.ifr_name, ifname);
1447 if (!ipx_getaddr(fd, IPX_FRAME_SNAP, &ifr)) {
1448 ife->has_ipx_sn = 1;
1449 ife->ipxaddr_sn = ifr.ifr_addr;
1451 strcpy(ifr.ifr_name, ifname);
1452 if (!ipx_getaddr(fd, IPX_FRAME_8023, &ifr)) {
1453 ife->has_ipx_e3 = 1;
1454 ife->ipxaddr_e3 = ifr.ifr_addr;
1456 strcpy(ifr.ifr_name, ifname);
1457 if (!ipx_getaddr(fd, IPX_FRAME_8022, &ifr)) {
1458 ife->has_ipx_e2 = 1;
1459 ife->ipxaddr_e2 = ifr.ifr_addr;
1465 /* Econet address maybe? */
1466 fd = get_socket_for_af(AF_ECONET);
1468 strcpy(ifr.ifr_name, ifname);
1469 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1470 ife->ecaddr = ifr.ifr_addr;
1471 ife->has_econet = 1;
1480 static int do_if_fetch(struct interface *ife)
1482 if (if_fetch(ife) < 0) {
1484 if (errno == ENODEV) {
1485 /* Give better error message for this case. */
1486 errmsg = _("Device not found");
1488 errmsg = strerror(errno);
1490 fprintf(stderr, _("%s: error fetching interface information: %s\n"),
1497 /* This structure defines hardware protocols and their handlers. */
1503 char *(*print) (unsigned char *);
1504 int (*input) (char *, struct sockaddr *);
1505 int (*activate) (int fd);
1506 int suppress_null_addr;
1509 static struct hwtype unspec_hwtype =
1511 "unspec", "UNSPEC", -1, 0,
1512 UNSPEC_print, NULL, NULL
1515 static struct hwtype loop_hwtype =
1517 "loop", "Local Loopback", ARPHRD_LOOPBACK, 0,
1522 #include <net/if_arp.h>
1523 #include <linux/if_ether.h>
1525 static struct hwtype ether_hwtype;
1527 /* Display an Ethernet address in readable format. */
1528 static char *pr_ether(unsigned char *ptr)
1530 static char buff[64];
1532 snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X",
1533 (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
1534 (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
1540 /* Input an Ethernet address and convert to binary. */
1541 static int in_ether(char *bufp, struct sockaddr *sap)
1548 sap->sa_family = ether_hwtype.type;
1553 while ((*bufp != '\0') && (i < ETH_ALEN)) {
1558 else if (c >= 'a' && c <= 'f')
1560 else if (c >= 'A' && c <= 'F')
1564 fprintf(stderr, _("in_ether(%s): invalid ether address!\n"), orig);
1573 else if (c >= 'a' && c <= 'f')
1574 val |= c - 'a' + 10;
1575 else if (c >= 'A' && c <= 'F')
1576 val |= c - 'A' + 10;
1577 else if (c == ':' || c == 0)
1581 fprintf(stderr, _("in_ether(%s): invalid ether address!\n"), orig);
1588 *ptr++ = (unsigned char) (val & 0377);
1591 /* We might get a semicolon here - not required. */
1593 if (i == ETH_ALEN) {
1595 fprintf(stderr, _("in_ether(%s): trailing : ignored!\n"),
1604 /* That's it. Any trailing junk? */
1605 if ((i == ETH_ALEN) && (*bufp != '\0')) {
1607 fprintf(stderr, _("in_ether(%s): trailing junk!\n"), orig);
1613 fprintf(stderr, "in_ether(%s): %s\n", orig, pr_ether(sap->sa_data));
1618 #endif /* KEEP_UNUSED */
1621 static struct hwtype ether_hwtype =
1623 "ether", "Ethernet", ARPHRD_ETHER, ETH_ALEN,
1624 pr_ether, NULL /* UNUSED in_ether */, NULL
1628 #endif /* HAVE_HWETHER */
1633 #include <net/if_arp.h>
1636 /* Start the PPP encapsulation on the file descriptor. */
1637 static int do_ppp(int fd)
1639 fprintf(stderr, _("You cannot start PPP with this program.\n"));
1642 #endif /* KEEP_UNUSED */
1644 static struct hwtype ppp_hwtype =
1646 "ppp", "Point-Point Protocol", ARPHRD_PPP, 0,
1647 NULL, NULL, NULL /* UNUSED do_ppp */, 0
1651 #endif /* HAVE_PPP */
1653 static struct hwtype *hwtypes[] =
1676 #ifdef ARPHRD_IEEE802_TR
1729 static short sVhwinit = 0;
1731 static void hwinit()
1733 loop_hwtype.title = _("Local Loopback");
1734 unspec_hwtype.title = _("UNSPEC");
1736 slip_hwtype.title = _("Serial Line IP");
1737 cslip_hwtype.title = _("VJ Serial Line IP");
1738 slip6_hwtype.title = _("6-bit Serial Line IP");
1739 cslip6_hwtype.title = _("VJ 6-bit Serial Line IP");
1740 adaptive_hwtype.title = _("Adaptive Serial Line IP");
1743 ether_hwtype.title = _("Ethernet");
1746 ash_hwtype.title = _("Ash");
1749 fddi_hwtype.title = _("Fiber Distributed Data Interface");
1752 hippi_hwtype.title = _("HIPPI");
1755 ax25_hwtype.title = _("AMPR AX.25");
1758 rose_hwtype.title = _("AMPR ROSE");
1761 netrom_hwtype.title = _("AMPR NET/ROM");
1764 x25_hwtype.title = _("generic X.25");
1767 tunnel_hwtype.title = _("IPIP Tunnel");
1770 ppp_hwtype.title = _("Point-to-Point Protocol");
1773 hdlc_hwtype.title = _("(Cisco)-HDLC");
1774 lapb_hwtype.title = _("LAPB");
1777 arcnet_hwtype.title = _("ARCnet");
1780 dlci_hwtype.title = _("Frame Relay DLCI");
1781 frad_hwtype.title = _("Frame Relay Access Device");
1784 sit_hwtype.title = _("IPv6-in-IPv4");
1787 irda_hwtype.title = _("IrLAP");
1790 tr_hwtype.title = _("16/4 Mbps Token Ring");
1791 #ifdef ARPHRD_IEEE802_TR
1792 tr_hwtype1.title = _("16/4 Mbps Token Ring (New)") ;
1796 ec_hwtype.title = _("Econet");
1800 #endif /* KEEP_UNUSED */
1803 static const char *if_port_text[][4] =
1805 /* Keep in step with <linux/netdevice.h> */
1806 {"unknown", NULL, NULL, NULL},
1807 {"10base2", "bnc", "coax", NULL},
1808 {"10baseT", "utp", "tpe", NULL},
1809 {"AUI", "thick", "db15", NULL},
1810 {"100baseT", NULL, NULL, NULL},
1811 {"100baseTX", NULL, NULL, NULL},
1812 {"100baseFX", NULL, NULL, NULL},
1813 {NULL, NULL, NULL, NULL},
1817 /* Check our hardware type table for this type. */
1818 static struct hwtype *get_hwntype(int type)
1820 struct hwtype **hwp;
1825 #endif /* KEEP_UNUSED */
1828 while (*hwp != NULL) {
1829 if ((*hwp)->type == type)
1836 /* return 1 if address is all zeros */
1837 static int hw_null_address(struct hwtype *hw, void *ap)
1840 unsigned char *address = (unsigned char *)ap;
1841 for (i = 0; i < hw->alen; i++)
1847 static const char TRext[] = "\0\0k\0M";
1849 static void print_bytes_scaled(unsigned long long ull, const char *end)
1851 unsigned long long int_part;
1852 unsigned long frac_part;
1859 for (i=0 ; i<2 ; i++) {
1860 if (int_part >= 1024) {
1861 frac_part = ((int_part % 1024) * 10) / 1024;
1863 ext += 2; /* Kb, Mb */
1867 printf("X bytes:%Lu (%Lu.%lu %sb)%s", ull, int_part, frac_part, ext, end);
1870 static void ife_print(struct interface *ptr)
1875 int can_compress = 0;
1878 static struct aftype *ipxtype = NULL;
1881 static struct aftype *ectype = NULL;
1884 static struct aftype *ddptype = NULL;
1888 char addr6[40], devname[20];
1889 struct sockaddr_in6 sap;
1890 int plen, scope, dad_status, if_idx;
1891 extern struct aftype inet6_aftype;
1895 ap = get_afntype(ptr->addr.sa_family);
1897 ap = get_afntype(0);
1901 if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6)
1904 hw = get_hwntype(hf);
1906 hw = get_hwntype(-1);
1908 printf(_("%-9.9s Link encap:%s "), ptr->name, _(hw->title));
1909 /* For some hardware types (eg Ash, ATM) we don't print the
1910 hardware address if it's null. */
1911 if (hw->print != NULL && (! (hw_null_address(hw, ptr->hwaddr) &&
1912 hw->suppress_null_addr)))
1913 printf(_("HWaddr %s "), hw->print(ptr->hwaddr));
1915 if (ptr->flags & IFF_PORTSEL) {
1916 printf(_("Media:%s"), if_port_text[ptr->map.port][0]);
1917 if (ptr->flags & IFF_AUTOMEDIA)
1918 printf(_("(auto)"));
1925 printf(_(" %s addr:%s "), ap->name,
1926 ap->sprint(&ptr->addr, 1));
1927 if (ptr->flags & IFF_POINTOPOINT) {
1928 printf(_(" P-t-P:%s "), ap->sprint(&ptr->dstaddr, 1));
1930 if (ptr->flags & IFF_BROADCAST) {
1931 printf(_(" Bcast:%s "), ap->sprint(&ptr->broadaddr, 1));
1933 printf(_(" Mask:%s\n"), ap->sprint(&ptr->netmask, 1));
1938 /* FIXME: should be integrated into interface.c. */
1940 if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) {
1941 while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n",
1942 addr6p[0], addr6p[1], addr6p[2], addr6p[3],
1943 addr6p[4], addr6p[5], addr6p[6], addr6p[7],
1944 &if_idx, &plen, &scope, &dad_status, devname) != EOF) {
1945 if (!strcmp(devname, ptr->name)) {
1946 sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
1947 addr6p[0], addr6p[1], addr6p[2], addr6p[3],
1948 addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
1949 inet6_aftype.input(1, addr6, (struct sockaddr *) &sap);
1950 printf(_(" inet6 addr: %s/%d"),
1951 inet6_aftype.sprint((struct sockaddr *) &sap, 1), plen);
1952 printf(_(" Scope:"));
1955 printf(_("Global"));
1957 case IPV6_ADDR_LINKLOCAL:
1960 case IPV6_ADDR_SITELOCAL:
1963 case IPV6_ADDR_COMPATv4:
1964 printf(_("Compat"));
1966 case IPV6_ADDR_LOOPBACK:
1970 printf(_("Unknown"));
1980 if (ipxtype == NULL)
1981 ipxtype = get_afntype(AF_IPX);
1983 if (ipxtype != NULL) {
1984 if (ptr->has_ipx_bb)
1985 printf(_(" IPX/Ethernet II addr:%s\n"),
1986 ipxtype->sprint(&ptr->ipxaddr_bb, 1));
1987 if (ptr->has_ipx_sn)
1988 printf(_(" IPX/Ethernet SNAP addr:%s\n"),
1989 ipxtype->sprint(&ptr->ipxaddr_sn, 1));
1990 if (ptr->has_ipx_e2)
1991 printf(_(" IPX/Ethernet 802.2 addr:%s\n"),
1992 ipxtype->sprint(&ptr->ipxaddr_e2, 1));
1993 if (ptr->has_ipx_e3)
1994 printf(_(" IPX/Ethernet 802.3 addr:%s\n"),
1995 ipxtype->sprint(&ptr->ipxaddr_e3, 1));
2000 if (ddptype == NULL)
2001 ddptype = get_afntype(AF_APPLETALK);
2002 if (ddptype != NULL) {
2004 printf(_(" EtherTalk Phase 2 addr:%s\n"), ddptype->sprint(&ptr->ddpaddr, 1));
2010 ectype = get_afntype(AF_ECONET);
2011 if (ectype != NULL) {
2012 if (ptr->has_econet)
2013 printf(_(" econet addr:%s\n"), ectype->sprint(&ptr->ecaddr, 1));
2018 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */
2019 if (ptr->flags == 0)
2020 printf(_("[NO FLAGS] "));
2021 if (ptr->flags & IFF_UP)
2023 if (ptr->flags & IFF_BROADCAST)
2024 printf(_("BROADCAST "));
2025 if (ptr->flags & IFF_DEBUG)
2026 printf(_("DEBUG "));
2027 if (ptr->flags & IFF_LOOPBACK)
2028 printf(_("LOOPBACK "));
2029 if (ptr->flags & IFF_POINTOPOINT)
2030 printf(_("POINTOPOINT "));
2031 if (ptr->flags & IFF_NOTRAILERS)
2032 printf(_("NOTRAILERS "));
2033 if (ptr->flags & IFF_RUNNING)
2034 printf(_("RUNNING "));
2035 if (ptr->flags & IFF_NOARP)
2036 printf(_("NOARP "));
2037 if (ptr->flags & IFF_PROMISC)
2038 printf(_("PROMISC "));
2039 if (ptr->flags & IFF_ALLMULTI)
2040 printf(_("ALLMULTI "));
2041 if (ptr->flags & IFF_SLAVE)
2042 printf(_("SLAVE "));
2043 if (ptr->flags & IFF_MASTER)
2044 printf(_("MASTER "));
2045 if (ptr->flags & IFF_MULTICAST)
2046 printf(_("MULTICAST "));
2048 if (ptr->flags & IFF_DYNAMIC)
2049 printf(_("DYNAMIC "));
2051 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */
2052 printf(_(" MTU:%d Metric:%d"),
2053 ptr->mtu, ptr->metric ? ptr->metric : 1);
2054 #ifdef SIOCSKEEPALIVE
2055 if (ptr->outfill || ptr->keepalive)
2056 printf(_(" Outfill:%d Keepalive:%d"),
2057 ptr->outfill, ptr->keepalive);
2061 /* If needed, display the interface statistics. */
2063 if (ptr->statistics_valid) {
2064 /* XXX: statistics are currently only printed for the primary address,
2065 * not for the aliases, although strictly speaking they're shared
2070 printf(_("RX packets:%Lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
2071 ptr->stats.rx_packets, ptr->stats.rx_errors,
2072 ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,
2073 ptr->stats.rx_frame_errors);
2075 printf(_(" compressed:%lu\n"), ptr->stats.rx_compressed);
2077 printf(_("TX packets:%Lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
2078 ptr->stats.tx_packets, ptr->stats.tx_errors,
2079 ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,
2080 ptr->stats.tx_carrier_errors);
2081 printf(_(" collisions:%lu "), ptr->stats.collisions);
2083 printf(_("compressed:%lu "), ptr->stats.tx_compressed);
2084 if (ptr->tx_queue_len != -1)
2085 printf(_("txqueuelen:%d "), ptr->tx_queue_len);
2087 print_bytes_scaled(ptr->stats.rx_bytes, " T");
2088 print_bytes_scaled(ptr->stats.tx_bytes, "\n");
2092 if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma ||
2093 ptr->map.base_addr)) {
2096 printf(_("Interrupt:%d "), ptr->map.irq);
2097 if (ptr->map.base_addr >= 0x100) /* Only print devices using it for
2099 printf(_("Base address:0x%x "), ptr->map.base_addr);
2100 if (ptr->map.mem_start) {
2101 printf(_("Memory:%lx-%lx "), ptr->map.mem_start, ptr->map.mem_end);
2104 printf(_("DMA chan:%x "), ptr->map.dma);
2111 static int do_if_print(struct interface *ife, void *cookie)
2113 int *opt_a = (int *) cookie;
2116 res = do_if_fetch(ife);
2118 if ((ife->flags & IFF_UP) || *opt_a)
2124 static struct interface *lookup_interface(char *name)
2126 struct interface *ife = NULL;
2128 if (if_readlist_proc(name) < 0)
2130 ife = add_interface(name);
2134 /* for ipv4 add/del modes */
2135 static int if_print(char *ifname)
2140 res = for_all_interfaces(do_if_print, &interface_opt_a);
2142 struct interface *ife;
2144 ife = lookup_interface(ifname);
2145 res = do_if_fetch(ife);
2152 int display_interfaces(char *ifname)
2156 /* Create a channel to the NET kernel. */
2157 if ((skfd = sockets_open(0)) < 0) {
2158 perror_msg_and_die("socket");
2161 /* Do we have to show the current setup? */
2162 status = if_print(ifname);