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 1.2 2001/05/05 03:19:12 bug1 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 */
55 * Device Hardware types.
58 #define HAVE_HWETHER 1
64 #include <sys/types.h>
65 #include <sys/socket.h>
66 #include <sys/ioctl.h>
67 #include <netinet/in.h>
69 #include <net/if_arp.h>
78 #include <netinet/in.h>
79 #include <arpa/inet.h>
80 #include <arpa/nameser.h>
84 #define _PATH_PROCNET_DEV "/proc/net/dev"
85 #define new(p) ((p) = xcalloc(1,sizeof(*(p))))
86 #define KRELEASE(maj,min,patch) ((maj) * 10000 + (min)*1000 + (patch))
88 static int procnetdev_vsn = 1;
91 /* Ugh. But libc5 doesn't provide POSIX types. */
92 #include <asm/types.h>
96 #include <linux/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 #include "net-support.h"
125 #include "pathnames.h"
128 #include "interface.h"
133 /* Defines for glibc2.0 users. */
134 #ifndef SIOCSIFTXQLEN
135 #define SIOCSIFTXQLEN 0x8943
136 #define SIOCGIFTXQLEN 0x8942
139 /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
141 #define ifr_qlen ifr_ifru.ifru_mtu
144 #ifndef HAVE_TXQUEUELEN
145 #define HAVE_TXQUEUELEN 1
149 #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
152 /* This structure defines protocol families and their handlers. */
158 char *(*print) (unsigned char *);
159 char *(*sprint) (struct sockaddr *, int numeric);
160 int (*input) (int type, char *bufp, struct sockaddr *);
161 void (*herror) (char *text);
162 int (*rprint) (int options);
163 int (*rinput) (int typ, int ext, char **argv);
166 int (*getmask) (char *src, struct sockaddr * mask, char *name);
172 static struct aftype *aftypes[];
178 static int flag_ax25;
180 static int flag_netrom;
181 static int flag_inet;
182 static int flag_inet6;
183 static int flag_econet;
184 static int flag_x25 = 0;
188 static struct aftrans_t {
195 "ax25", "ax25", &flag_ax25
198 "ip", "inet", &flag_inet
201 "ip6", "inet6", &flag_inet6
204 "ipx", "ipx", &flag_ipx
207 "appletalk", "ddp", &flag_ddp
210 "netrom", "netrom", &flag_netrom
213 "inet", "inet", &flag_inet
216 "inet6", "inet6", &flag_inet6
219 "ddp", "ddp", &flag_ddp
222 "unix", "unix", &flag_unx
225 "tcpip", "inet", &flag_inet
228 "econet", "ec", &flag_econet
231 "x25", "x25", &flag_x25
234 "ash", "ash", &flag_ash
241 static char afname[256] = "";
242 #endif /* KEEP_UNUSED */
246 /* Display a UNIX domain address. */
247 static char *UNIX_print(unsigned char *ptr)
253 /* Display a UNIX domain address. */
254 static char *UNIX_sprint(struct sockaddr *sap, int numeric)
258 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
259 return safe_strncpy(buf, _("[NONE SET]"), sizeof(buf));
260 return (UNIX_print(sap->sa_data));
264 static struct aftype unix_aftype =
266 "unix", "UNIX Domain", AF_UNIX, 0,
267 UNIX_print, UNIX_sprint, NULL, NULL,
272 #endif /* HAVE_AFUNIX */
277 extern int h_errno; /* some netdb.h versions don't export this */
282 struct sockaddr_in addr;
288 static struct addr *INET_nn = NULL; /* addr-to-name cache */
291 static int INET_resolve(char *name, struct sockaddr_in *sin, int hostfirst)
297 sin->sin_family = AF_INET;
300 /* Default is special, meaning 0.0.0.0. */
301 if (!strcmp(name, "default")) {
302 sin->sin_addr.s_addr = INADDR_ANY;
305 /* Look to see if it's a dotted quad. */
306 if (inet_aton(name, &sin->sin_addr)) {
309 /* If we expect this to be a hostname, try hostname database first */
311 if (hostfirst) fprintf (stderr, "gethostbyname (%s)\n", name);
314 (hp = gethostbyname(name)) != (struct hostent *) NULL) {
315 memcpy((char *) &sin->sin_addr, (char *) hp->h_addr_list[0],
316 sizeof(struct in_addr));
319 /* Try the NETWORKS database to see if this is a known network. */
321 fprintf (stderr, "getnetbyname (%s)\n", name);
323 if ((np = getnetbyname(name)) != (struct netent *) NULL) {
324 sin->sin_addr.s_addr = htonl(np->n_net);
328 /* Don't try again */
334 _res.options |= RES_DEBUG;
338 fprintf (stderr, "gethostbyname (%s)\n", name);
340 if ((hp = gethostbyname(name)) == (struct hostent *) NULL) {
344 memcpy((char *) &sin->sin_addr, (char *) hp->h_addr_list[0],
345 sizeof(struct in_addr));
349 #endif /* KEEP_UNUSED */
351 /* numeric: & 0x8000: default instead of *,
352 * & 0x4000: host instead of net,
353 * & 0x0fff: don't resolve
355 static int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
356 int numeric, unsigned int netmask)
361 unsigned long ad, host_ad;
365 if (s_in->sin_family != AF_INET) {
367 fprintf(stderr, _("rresolve: unsupport address family %d !\n"), s_in->sin_family);
369 errno = EAFNOSUPPORT;
372 ad = (unsigned long) s_in->sin_addr.s_addr;
374 fprintf (stderr, "rresolve: %08lx, mask %08x, num %08x \n", ad, netmask, numeric);
376 if (ad == INADDR_ANY) {
377 if ((numeric & 0x0FFF) == 0) {
378 if (numeric & 0x8000)
379 safe_strncpy(name, "default", len);
381 safe_strncpy(name, "*", len);
385 if (numeric & 0x0FFF) {
386 safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
390 if ((ad & (~netmask)) != 0 || (numeric & 0x4000))
397 if (pn->addr.sin_addr.s_addr == ad && pn->host == host) {
398 safe_strncpy(name, pn->name, len);
400 fprintf (stderr, "rresolve: found %s %08lx in cache\n", (host? "host": "net"), ad);
412 fprintf (stderr, "gethostbyaddr (%08lx)\n", ad);
414 ent = gethostbyaddr((char *) &ad, 4, AF_INET);
416 safe_strncpy(name, ent->h_name, len);
419 fprintf (stderr, "getnetbyaddr (%08lx)\n", host_ad);
421 np = getnetbyaddr(host_ad, AF_INET);
423 safe_strncpy(name, np->n_name, len);
425 if ((ent == NULL) && (np == NULL))
426 safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
427 pn = (struct addr *) xmalloc(sizeof(struct addr));
431 pn->name = (char *) xmalloc(strlen(name) + 1);
432 strcpy(pn->name, name);
439 static void INET_reserror(char *text)
444 /* Display an Internet socket address. */
445 static char *INET_print(unsigned char *ptr)
447 return (inet_ntoa((*(struct in_addr *) ptr)));
449 #endif /* KEEP_UNUSED */
451 /* Display an Internet socket address. */
452 static char *INET_sprint(struct sockaddr *sap, int numeric)
454 static char buff[128];
456 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
457 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
459 if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
460 numeric, 0xffffff00) != 0)
467 static char *INET_sprintmask(struct sockaddr *sap, int numeric,
468 unsigned int netmask)
470 static char buff[128];
472 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
473 return safe_strncpy(buff, _("[NONE SET]"), sizeof(buff));
474 if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
475 numeric, netmask) != 0)
480 static int INET_getsock(char *bufp, struct sockaddr *sap)
482 char *sp = bufp, *bp;
485 struct sockaddr_in *sin;
487 sin = (struct sockaddr_in *) sap;
488 sin->sin_family = AF_INET;
493 for (i = 0; i < sizeof(sin->sin_addr.s_addr); i++) {
496 if ((*sp >= 'A') && (*sp <= 'F'))
497 bp[i] |= (int) (*sp - 'A') + 10;
498 else if ((*sp >= '0') && (*sp <= '9'))
499 bp[i] |= (int) (*sp - '0');
507 if ((*sp >= 'A') && (*sp <= 'F'))
508 bp[i] |= (int) (*sp - 'A') + 10;
509 else if ((*sp >= '0') && (*sp <= '9'))
510 bp[i] |= (int) (*sp - '0');
516 sin->sin_addr.s_addr = htonl(val);
521 static int INET_input(int type, char *bufp, struct sockaddr *sap)
525 return (INET_getsock(bufp, sap));
527 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1));
529 return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0));
533 static int INET_getnetmask(char *adr, struct sockaddr *m, char *name)
535 struct sockaddr_in *mask = (struct sockaddr_in *) m;
539 if ((slash = strchr(adr, '/')) == NULL)
543 prefix = strtoul(slash, &end, 0);
548 sprintf(name, "/%d", prefix);
550 mask->sin_family = AF_INET;
551 mask->sin_addr.s_addr = htonl(~(0xffffffffU >> prefix));
554 #endif /* KEEP_UNUSED */
556 static struct aftype inet_aftype =
558 "inet", "DARPA Internet", AF_INET, sizeof(unsigned long),
559 NULL /* UNUSED INET_print */, INET_sprint,
560 NULL /* UNUSED INET_input */, NULL /* UNUSED INET_reserror */,
561 NULL /*INET_rprint */ , NULL /*INET_rinput */ ,
562 NULL /* UNUSED INET_getnetmask */,
567 #endif /* HAVE_AFINET */
569 /* Display an UNSPEC address. */
570 static char *UNSPEC_print(unsigned char *ptr)
572 static char buff[sizeof(struct sockaddr)*3+1];
577 for (i = 0; i < sizeof(struct sockaddr); i++) {
578 /* careful -- not every libc's sprintf returns # bytes written */
579 sprintf(pos, "%02X-", (*ptr++ & 0377));
582 /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */
587 /* Display an UNSPEC socket address. */
588 static char *UNSPEC_sprint(struct sockaddr *sap, int numeric)
592 if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
593 return safe_strncpy(buf, _("[NONE SET]"), sizeof(buf));
594 return (UNSPEC_print(sap->sa_data));
597 static struct aftype unspec_aftype =
599 "unspec", "UNSPEC", AF_UNSPEC, 0,
600 UNSPEC_print, UNSPEC_sprint, NULL, NULL,
604 static struct aftype *aftypes[] =
644 static short sVafinit = 0;
648 unspec_aftype.title = _("UNSPEC");
650 unix_aftype.title = _("UNIX Domain");
653 inet_aftype.title = _("DARPA Internet");
656 inet6_aftype.title = _("IPv6");
659 ax25_aftype.title = _("AMPR AX.25");
662 netrom_aftype.title = _("AMPR NET/ROM");
665 ipx_aftype.title = _("Novell IPX");
668 ddp_aftype.title = _("Appletalk DDP");
671 ec_aftype.title = _("Econet");
674 x25_aftype.title = _("CCITT X.25");
677 rose_aftype.title = _("AMPR ROSE");
680 ash_aftype.title = _("Ash");
685 static int aftrans_opt(const char *arg)
687 struct aftrans_t *paft;
691 safe_strncpy(buf, arg, sizeof(buf));
697 tmp2 = index(tmp1, ',');
703 for (paft = aftrans; paft->alias; paft++) {
704 if (strcmp(tmp1, paft->alias))
706 if (strlen(paft->name) + strlen(afname) + 1 >= sizeof(afname)) {
707 fprintf(stderr, _("Too much address family arguments.\n"));
714 strcat(afname, paft->name);
718 fprintf(stderr, _("Unknown address family `%s'.\n"), tmp1);
727 /* set the default AF list from the program name or a constant value */
728 static void aftrans_def(char *tool, char *argv0, char *dflt)
733 strcpy(afname, dflt);
735 if (!(tmp = strrchr(argv0, '/')))
736 tmp = argv0; /* no slash?! */
740 if (!(buf = strdup(tmp)))
743 if (strlen(tool) >= strlen(tmp)) {
747 tmp = buf + (strlen(tmp) - strlen(tool));
749 if (strcmp(tmp, tool) != 0) {
754 if ((tmp = strchr(buf, '_')))
758 if (aftrans_opt(buf))
764 /* Check our protocol family table for this family. */
765 static struct aftype *get_aftype(const char *name)
772 #endif /* KEEP_UNUSED */
775 while (*afp != NULL) {
776 if (!strcmp((*afp)->name, name))
780 if (index(name, ','))
781 fprintf(stderr, _("Please don't supply more than one address family.\n"));
784 #endif /* KEEP_UNUSED */
786 /* Check our protocol family table for this family. */
787 static struct aftype *get_afntype(int af)
794 #endif /* KEEP_UNUSED */
797 while (*afp != NULL) {
798 if ((*afp)->af == af)
805 /* Check our protocol family table for this family and return its socket */
806 static int get_socket_for_af(int af)
813 #endif /* KEEP_UNUSED */
816 while (*afp != NULL) {
817 if ((*afp)->af == af)
825 /* type: 0=all, 1=getroute */
826 static void print_aflist(int type) {
834 #endif /* KEEP_UNUSED */
837 while (*afp != NULL) {
838 if ((type == 1 && ((*afp)->rprint == NULL)) || ((*afp)->af == 0)) {
841 if ((count % 3) == 0) fprintf(stderr,count?"\n ":" ");
842 txt = (*afp)->name; if (!txt) txt = "..";
843 fprintf(stderr,"%s (%s) ",txt,_((*afp)->title));
847 fprintf(stderr,"\n");
849 #endif /* KEEP_UNUSED */
851 struct user_net_device_stats {
852 unsigned long long rx_packets; /* total packets received */
853 unsigned long long tx_packets; /* total packets transmitted */
854 unsigned long long rx_bytes; /* total bytes received */
855 unsigned long long tx_bytes; /* total bytes transmitted */
856 unsigned long rx_errors; /* bad packets received */
857 unsigned long tx_errors; /* packet transmit problems */
858 unsigned long rx_dropped; /* no space in linux buffers */
859 unsigned long tx_dropped; /* no space available in linux */
860 unsigned long rx_multicast; /* multicast packets received */
861 unsigned long rx_compressed;
862 unsigned long tx_compressed;
863 unsigned long collisions;
865 /* detailed rx_errors: */
866 unsigned long rx_length_errors;
867 unsigned long rx_over_errors; /* receiver ring buff overflow */
868 unsigned long rx_crc_errors; /* recved pkt with crc error */
869 unsigned long rx_frame_errors; /* recv'd frame alignment error */
870 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
871 unsigned long rx_missed_errors; /* receiver missed packet */
872 /* detailed tx_errors */
873 unsigned long tx_aborted_errors;
874 unsigned long tx_carrier_errors;
875 unsigned long tx_fifo_errors;
876 unsigned long tx_heartbeat_errors;
877 unsigned long tx_window_errors;
881 struct interface *next, *prev;
882 char name[IFNAMSIZ]; /* interface name */
883 short type; /* if type */
884 short flags; /* various flags */
885 int metric; /* routing metric */
886 int mtu; /* MTU value */
887 int tx_queue_len; /* transmit queue length */
888 struct ifmap map; /* hardware setup */
889 struct sockaddr addr; /* IP address */
890 struct sockaddr dstaddr; /* P-P IP address */
891 struct sockaddr broadaddr; /* IP broadcast address */
892 struct sockaddr netmask; /* IP network mask */
893 struct sockaddr ipxaddr_bb; /* IPX network address */
894 struct sockaddr ipxaddr_sn; /* IPX network address */
895 struct sockaddr ipxaddr_e3; /* IPX network address */
896 struct sockaddr ipxaddr_e2; /* IPX network address */
897 struct sockaddr ddpaddr; /* Appletalk DDP address */
898 struct sockaddr ecaddr; /* Econet address */
907 char hwaddr[32]; /* HW address */
908 int statistics_valid;
909 struct user_net_device_stats stats; /* statistics */
910 int keepalive; /* keepalive value for SLIP */
911 int outfill; /* outfill value for SLIP */
915 int interface_opt_a = 0; /* show all interfaces */
918 static int opt_i = 0; /* show the statistics */
919 static int opt_v = 0; /* debugging output flag */
921 static int addr_family = 0; /* currently selected AF */
922 #endif /* KEEP_UNUSED */
924 static struct interface *int_list, *int_last;
925 static int skfd = -1; /* generic raw socket desc. */
928 static int sockets_open(int family)
932 static int force = -1;
936 if (get_kernel_revision() < KRELEASE(2, 1, 0))
938 if (access("/proc/net", R_OK))
941 for (aft = aftypes; *aft; aft++) {
942 struct aftype *af = *aft;
943 int type = SOCK_DGRAM;
944 if (af->af == AF_UNSPEC)
946 if (family && family != af->af)
952 /* Check some /proc file first to not stress kmod */
953 if (!family && !force && af->flag_file) {
954 if (access(af->flag_file, R_OK))
958 if (af->af == AF_NETROM)
959 type = SOCK_SEQPACKET;
962 if (af->af == AF_X25)
963 type = SOCK_SEQPACKET;
965 af->fd = socket(af->af, type, 0);
970 fprintf(stderr, _("No usable address families found.\n"));
974 /* like strcmp(), but knows about numbers */
975 static int nstrcmp(const char *astr, const char *b)
977 const char *a = astr;
998 return atoi(a) > atoi(b) ? 1 : -1;
1003 static struct interface *add_interface(char *name)
1005 struct interface *ife, **nextp, *new;
1007 for (ife = int_last; ife; ife = ife->prev) {
1008 int n = nstrcmp(ife->name, name);
1015 safe_strncpy(new->name, name, IFNAMSIZ);
1016 nextp = ife ? &ife->next : &int_list;
1020 new->next->prev = new;
1028 static int if_readconf(void)
1034 /* XXX Should this re-use the global skfd? */
1037 /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets
1039 skfd2 = get_socket_for_af(AF_INET);
1041 fprintf(stderr, _("warning: no inet socket available: %s\n"),
1043 /* Try to soldier on with whatever socket we can get hold of. */
1044 skfd2 = sockets_open(0);
1051 ifc.ifc_len = sizeof(struct ifreq) * numreqs;
1052 ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len);
1054 if (ioctl(skfd2, SIOCGIFCONF, &ifc) < 0) {
1055 perror("SIOCGIFCONF");
1058 if (ifc.ifc_len == sizeof(struct ifreq) * numreqs) {
1059 /* assume it overflowed and try again */
1067 for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) {
1068 add_interface(ifr->ifr_name);
1078 static char *get_name(char *name, char *p)
1085 if (*p == ':') { /* could be an alias */
1086 char *dot = p, *dotname = name;
1090 if (*p != ':') { /* it wasn't, backup */
1105 static int get_dev_fields(char *bp, struct interface *ife)
1107 switch (procnetdev_vsn) {
1110 "%Lu %Lu %lu %lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu %lu",
1111 &ife->stats.rx_bytes,
1112 &ife->stats.rx_packets,
1113 &ife->stats.rx_errors,
1114 &ife->stats.rx_dropped,
1115 &ife->stats.rx_fifo_errors,
1116 &ife->stats.rx_frame_errors,
1117 &ife->stats.rx_compressed,
1118 &ife->stats.rx_multicast,
1120 &ife->stats.tx_bytes,
1121 &ife->stats.tx_packets,
1122 &ife->stats.tx_errors,
1123 &ife->stats.tx_dropped,
1124 &ife->stats.tx_fifo_errors,
1125 &ife->stats.collisions,
1126 &ife->stats.tx_carrier_errors,
1127 &ife->stats.tx_compressed);
1130 sscanf(bp, "%Lu %Lu %lu %lu %lu %lu %Lu %Lu %lu %lu %lu %lu %lu",
1131 &ife->stats.rx_bytes,
1132 &ife->stats.rx_packets,
1133 &ife->stats.rx_errors,
1134 &ife->stats.rx_dropped,
1135 &ife->stats.rx_fifo_errors,
1136 &ife->stats.rx_frame_errors,
1138 &ife->stats.tx_bytes,
1139 &ife->stats.tx_packets,
1140 &ife->stats.tx_errors,
1141 &ife->stats.tx_dropped,
1142 &ife->stats.tx_fifo_errors,
1143 &ife->stats.collisions,
1144 &ife->stats.tx_carrier_errors);
1145 ife->stats.rx_multicast = 0;
1148 sscanf(bp, "%Lu %lu %lu %lu %lu %Lu %lu %lu %lu %lu %lu",
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,
1155 &ife->stats.tx_packets,
1156 &ife->stats.tx_errors,
1157 &ife->stats.tx_dropped,
1158 &ife->stats.tx_fifo_errors,
1159 &ife->stats.collisions,
1160 &ife->stats.tx_carrier_errors);
1161 ife->stats.rx_bytes = 0;
1162 ife->stats.tx_bytes = 0;
1163 ife->stats.rx_multicast = 0;
1169 static inline int procnetdev_version(char *buf)
1171 if (strstr(buf, "compressed"))
1173 if (strstr(buf, "bytes"))
1178 static int if_readlist_proc(char *target)
1180 static int proc_read;
1183 struct interface *ife;
1191 fh = fopen(_PATH_PROCNET_DEV, "r");
1193 fprintf(stderr, _("Warning: cannot open %s (%s). Limited output.\n"),
1194 _PATH_PROCNET_DEV, strerror(errno));
1195 return if_readconf();
1197 fgets(buf, sizeof buf, fh); /* eat line */
1198 fgets(buf, sizeof buf, fh);
1200 #if 0 /* pretty, but can't cope with missing fields */
1201 fmt = proc_gen_fmt(_PATH_PROCNET_DEV, 1, fh,
1202 "face", "", /* parsed separately */
1209 "compressed", "%lu",
1218 "compressed", "%lu",
1223 procnetdev_vsn = procnetdev_version(buf);
1227 while (fgets(buf, sizeof buf, fh)) {
1228 char *s, name[IFNAMSIZ];
1229 s = get_name(name, buf);
1230 ife = add_interface(name);
1231 get_dev_fields(s, ife);
1232 ife->statistics_valid = 1;
1233 if (target && !strcmp(target,name))
1237 perror(_PATH_PROCNET_DEV);
1249 static int if_readlist(void)
1251 int err = if_readlist_proc(NULL);
1253 err = if_readconf();
1257 static int for_all_interfaces(int (*doit) (struct interface *, void *), void *cookie)
1259 struct interface *ife;
1261 if (!int_list && (if_readlist() < 0))
1263 for (ife = int_list; ife; ife = ife->next) {
1264 int err = doit(ife, cookie);
1271 /* Support for fetching an IPX address */
1274 static int ipx_getaddr(int sock, int ft, struct ifreq *ifr)
1276 ((struct sockaddr_ipx *) &ifr->ifr_addr)->sipx_type = ft;
1277 return ioctl(sock, SIOCGIFADDR, ifr);
1282 /* Fetch the interface configuration from the kernel. */
1283 static int if_fetch(struct interface *ife)
1287 char *ifname = ife->name;
1289 strcpy(ifr.ifr_name, ifname);
1290 if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0)
1292 ife->flags = ifr.ifr_flags;
1294 strcpy(ifr.ifr_name, ifname);
1295 if (ioctl(skfd, SIOCGIFHWADDR, &ifr) < 0)
1296 memset(ife->hwaddr, 0, 32);
1298 memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8);
1300 ife->type = ifr.ifr_hwaddr.sa_family;
1302 strcpy(ifr.ifr_name, ifname);
1303 if (ioctl(skfd, SIOCGIFMETRIC, &ifr) < 0)
1306 ife->metric = ifr.ifr_metric;
1308 strcpy(ifr.ifr_name, ifname);
1309 if (ioctl(skfd, SIOCGIFMTU, &ifr) < 0)
1312 ife->mtu = ifr.ifr_mtu;
1315 if (ife->type == ARPHRD_SLIP || ife->type == ARPHRD_CSLIP ||
1316 ife->type == ARPHRD_SLIP6 || ife->type == ARPHRD_CSLIP6 ||
1317 ife->type == ARPHRD_ADAPT) {
1319 strcpy(ifr.ifr_name, ifname);
1320 if (ioctl(skfd, SIOCGOUTFILL, &ifr) < 0)
1323 ife->outfill = (unsigned int) ifr.ifr_data;
1325 #ifdef SIOCGKEEPALIVE
1326 strcpy(ifr.ifr_name, ifname);
1327 if (ioctl(skfd, SIOCGKEEPALIVE, &ifr) < 0)
1330 ife->keepalive = (unsigned int) ifr.ifr_data;
1335 strcpy(ifr.ifr_name, ifname);
1336 if (ioctl(skfd, SIOCGIFMAP, &ifr) < 0)
1337 memset(&ife->map, 0, sizeof(struct ifmap));
1339 memcpy(&ife->map, &ifr.ifr_map, sizeof(struct ifmap));
1341 strcpy(ifr.ifr_name, ifname);
1342 if (ioctl(skfd, SIOCGIFMAP, &ifr) < 0)
1343 memset(&ife->map, 0, sizeof(struct ifmap));
1345 ife->map = ifr.ifr_map;
1347 #ifdef HAVE_TXQUEUELEN
1348 strcpy(ifr.ifr_name, ifname);
1349 if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) < 0)
1350 ife->tx_queue_len = -1; /* unknown value */
1352 ife->tx_queue_len = ifr.ifr_qlen;
1354 ife->tx_queue_len = -1; /* unknown value */
1359 fd = get_socket_for_af(AF_INET);
1361 strcpy(ifr.ifr_name, ifname);
1362 ifr.ifr_addr.sa_family = AF_INET;
1363 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1365 ife->addr = ifr.ifr_addr;
1366 strcpy(ifr.ifr_name, ifname);
1367 if (ioctl(fd, SIOCGIFDSTADDR, &ifr) < 0)
1368 memset(&ife->dstaddr, 0, sizeof(struct sockaddr));
1370 ife->dstaddr = ifr.ifr_dstaddr;
1372 strcpy(ifr.ifr_name, ifname);
1373 if (ioctl(fd, SIOCGIFBRDADDR, &ifr) < 0)
1374 memset(&ife->broadaddr, 0, sizeof(struct sockaddr));
1376 ife->broadaddr = ifr.ifr_broadaddr;
1378 strcpy(ifr.ifr_name, ifname);
1379 if (ioctl(fd, SIOCGIFNETMASK, &ifr) < 0)
1380 memset(&ife->netmask, 0, sizeof(struct sockaddr));
1382 ife->netmask = ifr.ifr_netmask;
1384 memset(&ife->addr, 0, sizeof(struct sockaddr));
1389 /* DDP address maybe ? */
1390 fd = get_socket_for_af(AF_APPLETALK);
1392 strcpy(ifr.ifr_name, ifname);
1393 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1394 ife->ddpaddr = ifr.ifr_addr;
1401 /* Look for IPX addresses with all framing types */
1402 fd = get_socket_for_af(AF_IPX);
1404 strcpy(ifr.ifr_name, ifname);
1405 if (!ipx_getaddr(fd, IPX_FRAME_ETHERII, &ifr)) {
1406 ife->has_ipx_bb = 1;
1407 ife->ipxaddr_bb = ifr.ifr_addr;
1409 strcpy(ifr.ifr_name, ifname);
1410 if (!ipx_getaddr(fd, IPX_FRAME_SNAP, &ifr)) {
1411 ife->has_ipx_sn = 1;
1412 ife->ipxaddr_sn = ifr.ifr_addr;
1414 strcpy(ifr.ifr_name, ifname);
1415 if (!ipx_getaddr(fd, IPX_FRAME_8023, &ifr)) {
1416 ife->has_ipx_e3 = 1;
1417 ife->ipxaddr_e3 = ifr.ifr_addr;
1419 strcpy(ifr.ifr_name, ifname);
1420 if (!ipx_getaddr(fd, IPX_FRAME_8022, &ifr)) {
1421 ife->has_ipx_e2 = 1;
1422 ife->ipxaddr_e2 = ifr.ifr_addr;
1428 /* Econet address maybe? */
1429 fd = get_socket_for_af(AF_ECONET);
1431 strcpy(ifr.ifr_name, ifname);
1432 if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) {
1433 ife->ecaddr = ifr.ifr_addr;
1434 ife->has_econet = 1;
1443 static int do_if_fetch(struct interface *ife)
1445 if (if_fetch(ife) < 0) {
1447 if (errno == ENODEV) {
1448 /* Give better error message for this case. */
1449 errmsg = _("Device not found");
1451 errmsg = strerror(errno);
1453 fprintf(stderr, _("%s: error fetching interface information: %s\n"),
1460 /* This structure defines hardware protocols and their handlers. */
1466 char *(*print) (unsigned char *);
1467 int (*input) (char *, struct sockaddr *);
1468 int (*activate) (int fd);
1469 int suppress_null_addr;
1472 static struct hwtype unspec_hwtype =
1474 "unspec", "UNSPEC", -1, 0,
1475 UNSPEC_print, NULL, NULL
1478 static struct hwtype loop_hwtype =
1480 "loop", "Local Loopback", ARPHRD_LOOPBACK, 0,
1485 #include <net/if_arp.h>
1486 #include <linux/if_ether.h>
1488 static struct hwtype ether_hwtype;
1490 /* Display an Ethernet address in readable format. */
1491 static char *pr_ether(unsigned char *ptr)
1493 static char buff[64];
1495 snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X",
1496 (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
1497 (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
1503 /* Input an Ethernet address and convert to binary. */
1504 static int in_ether(char *bufp, struct sockaddr *sap)
1511 sap->sa_family = ether_hwtype.type;
1516 while ((*bufp != '\0') && (i < ETH_ALEN)) {
1521 else if (c >= 'a' && c <= 'f')
1523 else if (c >= 'A' && c <= 'F')
1527 fprintf(stderr, _("in_ether(%s): invalid ether address!\n"), orig);
1536 else if (c >= 'a' && c <= 'f')
1537 val |= c - 'a' + 10;
1538 else if (c >= 'A' && c <= 'F')
1539 val |= c - 'A' + 10;
1540 else if (c == ':' || c == 0)
1544 fprintf(stderr, _("in_ether(%s): invalid ether address!\n"), orig);
1551 *ptr++ = (unsigned char) (val & 0377);
1554 /* We might get a semicolon here - not required. */
1556 if (i == ETH_ALEN) {
1558 fprintf(stderr, _("in_ether(%s): trailing : ignored!\n"),
1567 /* That's it. Any trailing junk? */
1568 if ((i == ETH_ALEN) && (*bufp != '\0')) {
1570 fprintf(stderr, _("in_ether(%s): trailing junk!\n"), orig);
1576 fprintf(stderr, "in_ether(%s): %s\n", orig, pr_ether(sap->sa_data));
1581 #endif /* KEEP_UNUSED */
1584 static struct hwtype ether_hwtype =
1586 "ether", "Ethernet", ARPHRD_ETHER, ETH_ALEN,
1587 pr_ether, NULL /* UNUSED in_ether */, NULL
1591 #endif /* HAVE_HWETHER */
1596 #include <net/if_arp.h>
1599 /* Start the PPP encapsulation on the file descriptor. */
1600 static int do_ppp(int fd)
1602 fprintf(stderr, _("You cannot start PPP with this program.\n"));
1605 #endif /* KEEP_UNUSED */
1607 static struct hwtype ppp_hwtype =
1609 "ppp", "Point-Point Protocol", ARPHRD_PPP, 0,
1610 NULL, NULL, NULL /* UNUSED do_ppp */, 0
1614 #endif /* HAVE_PPP */
1616 static struct hwtype *hwtypes[] =
1639 #ifdef ARPHRD_IEEE802_TR
1692 static short sVhwinit = 0;
1694 static void hwinit()
1696 loop_hwtype.title = _("Local Loopback");
1697 unspec_hwtype.title = _("UNSPEC");
1699 slip_hwtype.title = _("Serial Line IP");
1700 cslip_hwtype.title = _("VJ Serial Line IP");
1701 slip6_hwtype.title = _("6-bit Serial Line IP");
1702 cslip6_hwtype.title = _("VJ 6-bit Serial Line IP");
1703 adaptive_hwtype.title = _("Adaptive Serial Line IP");
1706 ether_hwtype.title = _("Ethernet");
1709 ash_hwtype.title = _("Ash");
1712 fddi_hwtype.title = _("Fiber Distributed Data Interface");
1715 hippi_hwtype.title = _("HIPPI");
1718 ax25_hwtype.title = _("AMPR AX.25");
1721 rose_hwtype.title = _("AMPR ROSE");
1724 netrom_hwtype.title = _("AMPR NET/ROM");
1727 x25_hwtype.title = _("generic X.25");
1730 tunnel_hwtype.title = _("IPIP Tunnel");
1733 ppp_hwtype.title = _("Point-to-Point Protocol");
1736 hdlc_hwtype.title = _("(Cisco)-HDLC");
1737 lapb_hwtype.title = _("LAPB");
1740 arcnet_hwtype.title = _("ARCnet");
1743 dlci_hwtype.title = _("Frame Relay DLCI");
1744 frad_hwtype.title = _("Frame Relay Access Device");
1747 sit_hwtype.title = _("IPv6-in-IPv4");
1750 irda_hwtype.title = _("IrLAP");
1753 tr_hwtype.title = _("16/4 Mbps Token Ring");
1754 #ifdef ARPHRD_IEEE802_TR
1755 tr_hwtype1.title = _("16/4 Mbps Token Ring (New)") ;
1759 ec_hwtype.title = _("Econet");
1763 #endif /* KEEP_UNUSED */
1766 static const char *if_port_text[][4] =
1768 /* Keep in step with <linux/netdevice.h> */
1769 {"unknown", NULL, NULL, NULL},
1770 {"10base2", "bnc", "coax", NULL},
1771 {"10baseT", "utp", "tpe", NULL},
1772 {"AUI", "thick", "db15", NULL},
1773 {"100baseT", NULL, NULL, NULL},
1774 {"100baseTX", NULL, NULL, NULL},
1775 {"100baseFX", NULL, NULL, NULL},
1776 {NULL, NULL, NULL, NULL},
1780 /* Check our hardware type table for this type. */
1781 static struct hwtype *get_hwntype(int type)
1783 struct hwtype **hwp;
1788 #endif /* KEEP_UNUSED */
1791 while (*hwp != NULL) {
1792 if ((*hwp)->type == type)
1799 /* return 1 if address is all zeros */
1800 static int hw_null_address(struct hwtype *hw, void *ap)
1803 unsigned char *address = (unsigned char *)ap;
1804 for (i = 0; i < hw->alen; i++)
1810 static const char TRext[] = "\0\0k\0M";
1812 static void print_bytes_scaled(unsigned long long ull, const char *end)
1814 unsigned long long int_part;
1815 unsigned long frac_part;
1822 for (i=0 ; i<2 ; i++) {
1823 if (int_part >= 1024) {
1824 frac_part = ((int_part % 1024) * 10) / 1024;
1826 ext += 2; /* Kb, Mb */
1830 printf("X bytes:%Lu (%Lu.%lu %sb)%s", ull, int_part, frac_part, ext, end);
1833 static void ife_print(struct interface *ptr)
1838 int can_compress = 0;
1841 static struct aftype *ipxtype = NULL;
1844 static struct aftype *ectype = NULL;
1847 static struct aftype *ddptype = NULL;
1851 char addr6[40], devname[20];
1852 struct sockaddr_in6 sap;
1853 int plen, scope, dad_status, if_idx;
1854 extern struct aftype inet6_aftype;
1858 ap = get_afntype(ptr->addr.sa_family);
1860 ap = get_afntype(0);
1864 if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6)
1867 hw = get_hwntype(hf);
1869 hw = get_hwntype(-1);
1871 printf(_("%-9.9s Link encap:%s "), ptr->name, _(hw->title));
1872 /* For some hardware types (eg Ash, ATM) we don't print the
1873 hardware address if it's null. */
1874 if (hw->print != NULL && (! (hw_null_address(hw, ptr->hwaddr) &&
1875 hw->suppress_null_addr)))
1876 printf(_("HWaddr %s "), hw->print(ptr->hwaddr));
1878 if (ptr->flags & IFF_PORTSEL) {
1879 printf(_("Media:%s"), if_port_text[ptr->map.port][0]);
1880 if (ptr->flags & IFF_AUTOMEDIA)
1881 printf(_("(auto)"));
1888 printf(_(" %s addr:%s "), ap->name,
1889 ap->sprint(&ptr->addr, 1));
1890 if (ptr->flags & IFF_POINTOPOINT) {
1891 printf(_(" P-t-P:%s "), ap->sprint(&ptr->dstaddr, 1));
1893 if (ptr->flags & IFF_BROADCAST) {
1894 printf(_(" Bcast:%s "), ap->sprint(&ptr->broadaddr, 1));
1896 printf(_(" Mask:%s\n"), ap->sprint(&ptr->netmask, 1));
1901 /* FIXME: should be integrated into interface.c. */
1903 if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) {
1904 while (fscanf(f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n",
1905 addr6p[0], addr6p[1], addr6p[2], addr6p[3],
1906 addr6p[4], addr6p[5], addr6p[6], addr6p[7],
1907 &if_idx, &plen, &scope, &dad_status, devname) != EOF) {
1908 if (!strcmp(devname, ptr->name)) {
1909 sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s",
1910 addr6p[0], addr6p[1], addr6p[2], addr6p[3],
1911 addr6p[4], addr6p[5], addr6p[6], addr6p[7]);
1912 inet6_aftype.input(1, addr6, (struct sockaddr *) &sap);
1913 printf(_(" inet6 addr: %s/%d"),
1914 inet6_aftype.sprint((struct sockaddr *) &sap, 1), plen);
1915 printf(_(" Scope:"));
1918 printf(_("Global"));
1920 case IPV6_ADDR_LINKLOCAL:
1923 case IPV6_ADDR_SITELOCAL:
1926 case IPV6_ADDR_COMPATv4:
1927 printf(_("Compat"));
1929 case IPV6_ADDR_LOOPBACK:
1933 printf(_("Unknown"));
1943 if (ipxtype == NULL)
1944 ipxtype = get_afntype(AF_IPX);
1946 if (ipxtype != NULL) {
1947 if (ptr->has_ipx_bb)
1948 printf(_(" IPX/Ethernet II addr:%s\n"),
1949 ipxtype->sprint(&ptr->ipxaddr_bb, 1));
1950 if (ptr->has_ipx_sn)
1951 printf(_(" IPX/Ethernet SNAP addr:%s\n"),
1952 ipxtype->sprint(&ptr->ipxaddr_sn, 1));
1953 if (ptr->has_ipx_e2)
1954 printf(_(" IPX/Ethernet 802.2 addr:%s\n"),
1955 ipxtype->sprint(&ptr->ipxaddr_e2, 1));
1956 if (ptr->has_ipx_e3)
1957 printf(_(" IPX/Ethernet 802.3 addr:%s\n"),
1958 ipxtype->sprint(&ptr->ipxaddr_e3, 1));
1963 if (ddptype == NULL)
1964 ddptype = get_afntype(AF_APPLETALK);
1965 if (ddptype != NULL) {
1967 printf(_(" EtherTalk Phase 2 addr:%s\n"), ddptype->sprint(&ptr->ddpaddr, 1));
1973 ectype = get_afntype(AF_ECONET);
1974 if (ectype != NULL) {
1975 if (ptr->has_econet)
1976 printf(_(" econet addr:%s\n"), ectype->sprint(&ptr->ecaddr, 1));
1981 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */
1982 if (ptr->flags == 0)
1983 printf(_("[NO FLAGS] "));
1984 if (ptr->flags & IFF_UP)
1986 if (ptr->flags & IFF_BROADCAST)
1987 printf(_("BROADCAST "));
1988 if (ptr->flags & IFF_DEBUG)
1989 printf(_("DEBUG "));
1990 if (ptr->flags & IFF_LOOPBACK)
1991 printf(_("LOOPBACK "));
1992 if (ptr->flags & IFF_POINTOPOINT)
1993 printf(_("POINTOPOINT "));
1994 if (ptr->flags & IFF_NOTRAILERS)
1995 printf(_("NOTRAILERS "));
1996 if (ptr->flags & IFF_RUNNING)
1997 printf(_("RUNNING "));
1998 if (ptr->flags & IFF_NOARP)
1999 printf(_("NOARP "));
2000 if (ptr->flags & IFF_PROMISC)
2001 printf(_("PROMISC "));
2002 if (ptr->flags & IFF_ALLMULTI)
2003 printf(_("ALLMULTI "));
2004 if (ptr->flags & IFF_SLAVE)
2005 printf(_("SLAVE "));
2006 if (ptr->flags & IFF_MASTER)
2007 printf(_("MASTER "));
2008 if (ptr->flags & IFF_MULTICAST)
2009 printf(_("MULTICAST "));
2011 if (ptr->flags & IFF_DYNAMIC)
2012 printf(_("DYNAMIC "));
2014 /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */
2015 printf(_(" MTU:%d Metric:%d"),
2016 ptr->mtu, ptr->metric ? ptr->metric : 1);
2017 #ifdef SIOCSKEEPALIVE
2018 if (ptr->outfill || ptr->keepalive)
2019 printf(_(" Outfill:%d Keepalive:%d"),
2020 ptr->outfill, ptr->keepalive);
2024 /* If needed, display the interface statistics. */
2026 if (ptr->statistics_valid) {
2027 /* XXX: statistics are currently only printed for the primary address,
2028 * not for the aliases, although strictly speaking they're shared
2033 printf(_("RX packets:%Lu errors:%lu dropped:%lu overruns:%lu frame:%lu\n"),
2034 ptr->stats.rx_packets, ptr->stats.rx_errors,
2035 ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors,
2036 ptr->stats.rx_frame_errors);
2038 printf(_(" compressed:%lu\n"), ptr->stats.rx_compressed);
2040 printf(_("TX packets:%Lu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n"),
2041 ptr->stats.tx_packets, ptr->stats.tx_errors,
2042 ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors,
2043 ptr->stats.tx_carrier_errors);
2044 printf(_(" collisions:%lu "), ptr->stats.collisions);
2046 printf(_("compressed:%lu "), ptr->stats.tx_compressed);
2047 if (ptr->tx_queue_len != -1)
2048 printf(_("txqueuelen:%d "), ptr->tx_queue_len);
2050 print_bytes_scaled(ptr->stats.rx_bytes, " T");
2051 print_bytes_scaled(ptr->stats.tx_bytes, "\n");
2055 if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma ||
2056 ptr->map.base_addr)) {
2059 printf(_("Interrupt:%d "), ptr->map.irq);
2060 if (ptr->map.base_addr >= 0x100) /* Only print devices using it for
2062 printf(_("Base address:0x%x "), ptr->map.base_addr);
2063 if (ptr->map.mem_start) {
2064 printf(_("Memory:%lx-%lx "), ptr->map.mem_start, ptr->map.mem_end);
2067 printf(_("DMA chan:%x "), ptr->map.dma);
2074 static int do_if_print(struct interface *ife, void *cookie)
2076 int *opt_a = (int *) cookie;
2079 res = do_if_fetch(ife);
2081 if ((ife->flags & IFF_UP) || *opt_a)
2087 static struct interface *lookup_interface(char *name)
2089 struct interface *ife = NULL;
2091 if (if_readlist_proc(name) < 0)
2093 ife = add_interface(name);
2097 /* for ipv4 add/del modes */
2098 static int if_print(char *ifname)
2103 res = for_all_interfaces(do_if_print, &interface_opt_a);
2105 struct interface *ife;
2107 ife = lookup_interface(ifname);
2108 res = do_if_fetch(ife);
2115 int display_interfaces(char *ifname)
2119 /* Create a channel to the NET kernel. */
2120 if ((skfd = sockets_open(0)) < 0) {
2121 perror_msg_and_die("socket");
2124 /* Do we have to show the current setup? */
2125 status = if_print(ifname);