| /* |
| * stolen from net-tools-1.59 and stripped down for busybox by |
| * Erik Andersen <andersen@codepoet.org> |
| * |
| * Heavily modified by Manuel Novoa III Mar 12, 2001 |
| * |
| * Added print_bytes_scaled function to reduce code size. |
| * Added some (potentially) missing defines. |
| * Improved display support for -a and for a named interface. |
| * |
| * ----------------------------------------------------------- |
| * |
| * ifconfig This file contains an implementation of the command |
| * that either displays or sets the characteristics of |
| * one or more of the system's networking interfaces. |
| * |
| * Version: $Id: interface.c,v 1.25 2004/08/26 21:45:21 andersen Exp $ |
| * |
| * Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org> |
| * and others. Copyright 1993 MicroWalt Corporation |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
| * |
| * Patched to support 'add' and 'del' keywords for INET(4) addresses |
| * by Mrs. Brisby <mrs.brisby@nimh.org> |
| * |
| * {1.34} - 19980630 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
| * - gettext instead of catgets for i18n |
| * 10/1998 - Andi Kleen. Use interface list primitives. |
| * 20001008 - Bernd Eckenfels, Patch from RH for setting mtu |
| * (default AF was wrong) |
| */ |
| |
| /* |
| * |
| * Protocol Families. |
| * |
| */ |
| #define HAVE_AFINET 1 |
| |
| /* |
| * |
| * Device Hardware types. |
| * |
| */ |
| #define HAVE_HWETHER 1 |
| #define HAVE_HWPPP 1 |
| |
| |
| #include "inet_common.h" |
| #include <stdio.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <ctype.h> |
| #include <sys/ioctl.h> |
| #include <sys/types.h> |
| #include <net/if.h> |
| #include <net/if_arp.h> |
| #include "busybox.h" |
| |
| #ifdef CONFIG_FEATURE_IPV6 |
| # define HAVE_AFINET6 1 |
| #else |
| # undef HAVE_AFINET6 |
| #endif |
| |
| #define _PATH_PROCNET_DEV "/proc/net/dev" |
| #define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6" |
| |
| #if HAVE_AFINET6 |
| |
| #ifndef _LINUX_IN6_H |
| /* |
| * This is in linux/include/net/ipv6.h. |
| */ |
| |
| struct in6_ifreq { |
| struct in6_addr ifr6_addr; |
| uint32_t ifr6_prefixlen; |
| unsigned int ifr6_ifindex; |
| }; |
| |
| #endif |
| |
| #endif /* HAVE_AFINET6 */ |
| |
| /* Defines for glibc2.0 users. */ |
| #ifndef SIOCSIFTXQLEN |
| #define SIOCSIFTXQLEN 0x8943 |
| #define SIOCGIFTXQLEN 0x8942 |
| #endif |
| |
| /* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */ |
| #ifndef ifr_qlen |
| #define ifr_qlen ifr_ifru.ifru_mtu |
| #endif |
| |
| #ifndef HAVE_TXQUEUELEN |
| #define HAVE_TXQUEUELEN 1 |
| #endif |
| |
| #ifndef IFF_DYNAMIC |
| #define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */ |
| #endif |
| |
| /* This structure defines protocol families and their handlers. */ |
| struct aftype { |
| const char *name; |
| const char *title; |
| int af; |
| int alen; |
| char *(*print) (unsigned char *); |
| char *(*sprint) (struct sockaddr *, int numeric); |
| int (*input) (int type, char *bufp, struct sockaddr *); |
| void (*herror) (char *text); |
| int (*rprint) (int options); |
| int (*rinput) (int typ, int ext, char **argv); |
| |
| /* may modify src */ |
| int (*getmask) (char *src, struct sockaddr * mask, char *name); |
| |
| int fd; |
| char *flag_file; |
| }; |
| |
| #if HAVE_AFUNIX |
| |
| /* Display a UNIX domain address. */ |
| static char *UNIX_print(unsigned char *ptr) |
| { |
| return (ptr); |
| } |
| |
| |
| /* Display a UNIX domain address. */ |
| static char *UNIX_sprint(struct sockaddr *sap, int numeric) |
| { |
| static char buf[64]; |
| |
| if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
| return safe_strncpy(buf, "[NONE SET]", sizeof(buf)); |
| return (UNIX_print(sap->sa_data)); |
| } |
| |
| |
| static struct aftype unix_aftype = { |
| "unix", "UNIX Domain", AF_UNIX, 0, |
| UNIX_print, UNIX_sprint, NULL, NULL, |
| NULL, NULL, NULL, |
| -1, |
| "/proc/net/unix" |
| }; |
| #endif /* HAVE_AFUNIX */ |
| |
| #if HAVE_AFINET |
| |
| /* Display an Internet socket address. */ |
| static char *INET_sprint(struct sockaddr *sap, int numeric) |
| { |
| static char buff[128]; |
| |
| if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
| return safe_strncpy(buff, "[NONE SET]", sizeof(buff)); |
| |
| if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap, |
| numeric, 0xffffff00) != 0) |
| return (NULL); |
| |
| return (buff); |
| } |
| |
| static struct aftype inet_aftype = { |
| "inet", "DARPA Internet", AF_INET, sizeof(unsigned long), |
| NULL /* UNUSED INET_print */ , INET_sprint, |
| NULL /* UNUSED INET_input */ , NULL /* UNUSED INET_reserror */ , |
| NULL /*INET_rprint */ , NULL /*INET_rinput */ , |
| NULL /* UNUSED INET_getnetmask */ , |
| -1, |
| NULL |
| }; |
| |
| #endif /* HAVE_AFINET */ |
| |
| #if HAVE_AFINET6 |
| |
| /* Display an Internet socket address. */ |
| /* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */ |
| static char *INET6_sprint(struct sockaddr *sap, int numeric) |
| { |
| static char buff[128]; |
| |
| if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
| return safe_strncpy(buff, "[NONE SET]", sizeof(buff)); |
| if (INET6_rresolve |
| (buff, sizeof(buff), (struct sockaddr_in6 *) sap, numeric) != 0) |
| return safe_strncpy(buff, "[UNKNOWN]", sizeof(buff)); |
| return (buff); |
| } |
| |
| static struct aftype inet6_aftype = { |
| "inet6", "IPv6", AF_INET6, sizeof(struct in6_addr), |
| NULL /* UNUSED INET6_print */ , INET6_sprint, |
| NULL /* UNUSED INET6_input */ , NULL /* UNUSED INET6_reserror */ , |
| NULL /*INET6_rprint */ , NULL /*INET6_rinput */ , |
| NULL /* UNUSED INET6_getnetmask */ , |
| -1, |
| NULL |
| }; |
| |
| #endif /* HAVE_AFINET6 */ |
| |
| /* Display an UNSPEC address. */ |
| static char *UNSPEC_print(unsigned char *ptr) |
| { |
| static char buff[sizeof(struct sockaddr) * 3 + 1]; |
| char *pos; |
| unsigned int i; |
| |
| pos = buff; |
| for (i = 0; i < sizeof(struct sockaddr); i++) { |
| /* careful -- not every libc's sprintf returns # bytes written */ |
| sprintf(pos, "%02X-", (*ptr++ & 0377)); |
| pos += 3; |
| } |
| /* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */ |
| *--pos = '\0'; |
| return (buff); |
| } |
| |
| /* Display an UNSPEC socket address. */ |
| static char *UNSPEC_sprint(struct sockaddr *sap, int numeric) |
| { |
| static char buf[64]; |
| |
| if (sap->sa_family == 0xFFFF || sap->sa_family == 0) |
| return safe_strncpy(buf, "[NONE SET]", sizeof(buf)); |
| return (UNSPEC_print((unsigned char *)sap->sa_data)); |
| } |
| |
| static struct aftype unspec_aftype = { |
| "unspec", "UNSPEC", AF_UNSPEC, 0, |
| UNSPEC_print, UNSPEC_sprint, NULL, NULL, |
| NULL, |
| }; |
| |
| static struct aftype * const aftypes[] = { |
| #if HAVE_AFUNIX |
| &unix_aftype, |
| #endif |
| #if HAVE_AFINET |
| &inet_aftype, |
| #endif |
| #if HAVE_AFINET6 |
| &inet6_aftype, |
| #endif |
| &unspec_aftype, |
| NULL |
| }; |
| |
| /* Check our protocol family table for this family. */ |
| static struct aftype *get_afntype(int af) |
| { |
| struct aftype * const *afp; |
| |
| afp = aftypes; |
| while (*afp != NULL) { |
| if ((*afp)->af == af) |
| return (*afp); |
| afp++; |
| } |
| return (NULL); |
| } |
| |
| /* Check our protocol family table for this family and return its socket */ |
| static int get_socket_for_af(int af) |
| { |
| struct aftype * const *afp; |
| |
| afp = aftypes; |
| while (*afp != NULL) { |
| if ((*afp)->af == af) |
| return (*afp)->fd; |
| afp++; |
| } |
| return -1; |
| } |
| |
| struct user_net_device_stats { |
| unsigned long long rx_packets; /* total packets received */ |
| unsigned long long tx_packets; /* total packets transmitted */ |
| unsigned long long rx_bytes; /* total bytes received */ |
| unsigned long long tx_bytes; /* total bytes transmitted */ |
| unsigned long rx_errors; /* bad packets received */ |
| unsigned long tx_errors; /* packet transmit problems */ |
| unsigned long rx_dropped; /* no space in linux buffers */ |
| unsigned long tx_dropped; /* no space available in linux */ |
| unsigned long rx_multicast; /* multicast packets received */ |
| unsigned long rx_compressed; |
| unsigned long tx_compressed; |
| unsigned long collisions; |
| |
| /* detailed rx_errors: */ |
| unsigned long rx_length_errors; |
| unsigned long rx_over_errors; /* receiver ring buff overflow */ |
| unsigned long rx_crc_errors; /* recved pkt with crc error */ |
| unsigned long rx_frame_errors; /* recv'd frame alignment error */ |
| unsigned long rx_fifo_errors; /* recv'r fifo overrun */ |
| unsigned long rx_missed_errors; /* receiver missed packet */ |
| /* detailed tx_errors */ |
| unsigned long tx_aborted_errors; |
| unsigned long tx_carrier_errors; |
| unsigned long tx_fifo_errors; |
| unsigned long tx_heartbeat_errors; |
| unsigned long tx_window_errors; |
| }; |
| |
| struct interface { |
| struct interface *next, *prev; |
| char name[IFNAMSIZ]; /* interface name */ |
| short type; /* if type */ |
| short flags; /* various flags */ |
| int metric; /* routing metric */ |
| int mtu; /* MTU value */ |
| int tx_queue_len; /* transmit queue length */ |
| struct ifmap map; /* hardware setup */ |
| struct sockaddr addr; /* IP address */ |
| struct sockaddr dstaddr; /* P-P IP address */ |
| struct sockaddr broadaddr; /* IP broadcast address */ |
| struct sockaddr netmask; /* IP network mask */ |
| int has_ip; |
| char hwaddr[32]; /* HW address */ |
| int statistics_valid; |
| struct user_net_device_stats stats; /* statistics */ |
| int keepalive; /* keepalive value for SLIP */ |
| int outfill; /* outfill value for SLIP */ |
| }; |
| |
| |
| int interface_opt_a = 0; /* show all interfaces */ |
| |
| static struct interface *int_list, *int_last; |
| static int skfd = -1; /* generic raw socket desc. */ |
| |
| |
| static int sockets_open(int family) |
| { |
| struct aftype * const *aft; |
| int sfd = -1; |
| static int force = -1; |
| |
| if (force < 0) { |
| force = 0; |
| if (get_linux_version_code() < KERNEL_VERSION(2,1,0)) |
| force = 1; |
| if (access("/proc/net", R_OK)) |
| force = 1; |
| } |
| for (aft = aftypes; *aft; aft++) { |
| struct aftype *af = *aft; |
| int type = SOCK_DGRAM; |
| |
| if (af->af == AF_UNSPEC) |
| continue; |
| if (family && family != af->af) |
| continue; |
| if (af->fd != -1) { |
| sfd = af->fd; |
| continue; |
| } |
| /* Check some /proc file first to not stress kmod */ |
| if (!family && !force && af->flag_file) { |
| if (access(af->flag_file, R_OK)) |
| continue; |
| } |
| af->fd = socket(af->af, type, 0); |
| if (af->fd >= 0) |
| sfd = af->fd; |
| } |
| if (sfd < 0) { |
| bb_error_msg("No usable address families found."); |
| } |
| return sfd; |
| } |
| |
| #ifdef CONFIG_FEATURE_CLEAN_UP |
| static void sockets_close(void) |
| { |
| struct aftype * const *aft; |
| for (aft = aftypes; *aft != NULL; aft++) { |
| struct aftype *af = *aft; |
| if( af->fd != -1 ) { |
| close(af->fd); |
| af->fd = -1; |
| } |
| } |
| } |
| #endif |
| |
| /* like strcmp(), but knows about numbers */ |
| static int nstrcmp(const char *a, const char *b) |
| { |
| const char *a_ptr = a; |
| const char *b_ptr = b; |
| |
| while (*a == *b) { |
| if (*a == '\0') { |
| return 0; |
| } |
| if (!isdigit(*a) && isdigit(*(a+1))) { |
| a_ptr = a+1; |
| b_ptr = b+1; |
| } |
| a++; |
| b++; |
| } |
| |
| if (isdigit(*a) && isdigit(*b)) { |
| return atoi(a_ptr) > atoi(b_ptr) ? 1 : -1; |
| } |
| return *a - *b; |
| } |
| |
| static struct interface *add_interface(char *name) |
| { |
| struct interface *ife, **nextp, *new; |
| |
| for (ife = int_last; ife; ife = ife->prev) { |
| int n = nstrcmp(ife->name, name); |
| |
| if (n == 0) |
| return ife; |
| if (n < 0) |
| break; |
| } |
| |
| new = xzalloc(sizeof(*new)); |
| safe_strncpy(new->name, name, IFNAMSIZ); |
| nextp = ife ? &ife->next : &int_list; |
| new->prev = ife; |
| new->next = *nextp; |
| if (new->next) |
| new->next->prev = new; |
| else |
| int_last = new; |
| *nextp = new; |
| return new; |
| } |
| |
| |
| static int if_readconf(void) |
| { |
| int numreqs = 30; |
| struct ifconf ifc; |
| struct ifreq *ifr; |
| int n, err = -1; |
| int skfd2; |
| |
| /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets |
| (as of 2.1.128) */ |
| skfd2 = get_socket_for_af(AF_INET); |
| if (skfd2 < 0) { |
| bb_perror_msg(("warning: no inet socket available")); |
| /* Try to soldier on with whatever socket we can get hold of. */ |
| skfd2 = sockets_open(0); |
| if (skfd2 < 0) |
| return -1; |
| } |
| |
| ifc.ifc_buf = NULL; |
| for (;;) { |
| ifc.ifc_len = sizeof(struct ifreq) * numreqs; |
| ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len); |
| |
| if (ioctl(skfd2, SIOCGIFCONF, &ifc) < 0) { |
| perror("SIOCGIFCONF"); |
| goto out; |
| } |
| if (ifc.ifc_len == sizeof(struct ifreq) * numreqs) { |
| /* assume it overflowed and try again */ |
| numreqs += 10; |
| continue; |
| } |
| break; |
| } |
| |
| ifr = ifc.ifc_req; |
| for (n = 0; n < ifc.ifc_len; n += sizeof(struct ifreq)) { |
| add_interface(ifr->ifr_name); |
| ifr++; |
| } |
| err = 0; |
| |
| out: |
| free(ifc.ifc_buf); |
| return err; |
| } |
| |
| static char *get_name(char *name, char *p) |
| { |
| /* Extract <name>[:<alias>] from nul-terminated p where p matches |
| <name>[:<alias>]: after leading whitespace. |
| If match is not made, set name empty and return unchanged p */ |
| int namestart=0, nameend=0, aliasend; |
| while (isspace(p[namestart])) |
| namestart++; |
| nameend=namestart; |
| while (p[nameend] && p[nameend]!=':' && !isspace(p[nameend])) |
| nameend++; |
| if (p[nameend]==':') { |
| aliasend=nameend+1; |
| while (p[aliasend] && isdigit(p[aliasend])) |
| aliasend++; |
| if (p[aliasend]==':') { |
| nameend=aliasend; |
| } |
| if ((nameend-namestart)<IFNAMSIZ) { |
| memcpy(name,&p[namestart],nameend-namestart); |
| name[nameend-namestart]='\0'; |
| p=&p[nameend]; |
| } else { |
| /* Interface name too large */ |
| name[0]='\0'; |
| } |
| } else { |
| /* first ':' not found - return empty */ |
| name[0]='\0'; |
| } |
| return p + 1; |
| } |
| |
| /* If scanf supports size qualifiers for %n conversions, then we can |
| * use a modified fmt that simply stores the position in the fields |
| * having no associated fields in the proc string. Of course, we need |
| * to zero them again when we're done. But that is smaller than the |
| * old approach of multiple scanf occurrences with large numbers of |
| * args. */ |
| |
| /* static const char * const ss_fmt[] = { */ |
| /* "%lln%llu%lu%lu%lu%lu%ln%ln%lln%llu%lu%lu%lu%lu%lu", */ |
| /* "%llu%llu%lu%lu%lu%lu%ln%ln%llu%llu%lu%lu%lu%lu%lu", */ |
| /* "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" */ |
| /* }; */ |
| |
| /* Lie about the size of the int pointed to for %n. */ |
| #if INT_MAX == LONG_MAX |
| static const char * const ss_fmt[] = { |
| "%n%llu%u%u%u%u%n%n%n%llu%u%u%u%u%u", |
| "%llu%llu%u%u%u%u%n%n%llu%llu%u%u%u%u%u", |
| "%llu%llu%u%u%u%u%u%u%llu%llu%u%u%u%u%u%u" |
| }; |
| #else |
| static const char * const ss_fmt[] = { |
| "%n%llu%lu%lu%lu%lu%n%n%n%llu%lu%lu%lu%lu%lu", |
| "%llu%llu%lu%lu%lu%lu%n%n%llu%llu%lu%lu%lu%lu%lu", |
| "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" |
| }; |
| |
| #endif |
| |
| static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn) |
| { |
| memset(&ife->stats, 0, sizeof(struct user_net_device_stats)); |
| |
| sscanf(bp, ss_fmt[procnetdev_vsn], |
| &ife->stats.rx_bytes, /* missing for 0 */ |
| &ife->stats.rx_packets, |
| &ife->stats.rx_errors, |
| &ife->stats.rx_dropped, |
| &ife->stats.rx_fifo_errors, |
| &ife->stats.rx_frame_errors, |
| &ife->stats.rx_compressed, /* missing for <= 1 */ |
| &ife->stats.rx_multicast, /* missing for <= 1 */ |
| &ife->stats.tx_bytes, /* missing for 0 */ |
| &ife->stats.tx_packets, |
| &ife->stats.tx_errors, |
| &ife->stats.tx_dropped, |
| &ife->stats.tx_fifo_errors, |
| &ife->stats.collisions, |
| &ife->stats.tx_carrier_errors, |
| &ife->stats.tx_compressed /* missing for <= 1 */ |
| ); |
| |
| if (procnetdev_vsn <= 1) { |
| if (procnetdev_vsn == 0) { |
| ife->stats.rx_bytes = 0; |
| ife->stats.tx_bytes = 0; |
| } |
| ife->stats.rx_multicast = 0; |
| ife->stats.rx_compressed = 0; |
| ife->stats.tx_compressed = 0; |
| } |
| } |
| |
| static inline int procnetdev_version(char *buf) |
| { |
| if (strstr(buf, "compressed")) |
| return 2; |
| if (strstr(buf, "bytes")) |
| return 1; |
| return 0; |
| } |
| |
| static int if_readlist_proc(char *target) |
| { |
| static int proc_read; |
| FILE *fh; |
| char buf[512]; |
| struct interface *ife; |
| int err, procnetdev_vsn; |
| |
| if (proc_read) |
| return 0; |
| if (!target) |
| proc_read = 1; |
| |
| fh = fopen(_PATH_PROCNET_DEV, "r"); |
| if (!fh) { |
| bb_perror_msg("Warning: cannot open %s. Limited output.", _PATH_PROCNET_DEV); |
| return if_readconf(); |
| } |
| fgets(buf, sizeof buf, fh); /* eat line */ |
| fgets(buf, sizeof buf, fh); |
| |
| procnetdev_vsn = procnetdev_version(buf); |
| |
| err = 0; |
| while (fgets(buf, sizeof buf, fh)) { |
| char *s, name[128]; |
| |
| s = get_name(name, buf); |
| ife = add_interface(name); |
| get_dev_fields(s, ife, procnetdev_vsn); |
| ife->statistics_valid = 1; |
| if (target && !strcmp(target, name)) |
| break; |
| } |
| if (ferror(fh)) { |
| perror(_PATH_PROCNET_DEV); |
| err = -1; |
| proc_read = 0; |
| } |
| fclose(fh); |
| return err; |
| } |
| |
| static int if_readlist(void) |
| { |
| int err = if_readlist_proc(NULL); |
| |
| if (!err) |
| err = if_readconf(); |
| return err; |
| } |
| |
| static int for_all_interfaces(int (*doit) (struct interface *, void *), |
| void *cookie) |
| { |
| struct interface *ife; |
| |
| if (!int_list && (if_readlist() < 0)) |
| return -1; |
| for (ife = int_list; ife; ife = ife->next) { |
| int err = doit(ife, cookie); |
| |
| if (err) |
| return err; |
| } |
| return 0; |
| } |
| |
| /* Fetch the interface configuration from the kernel. */ |
| static int if_fetch(struct interface *ife) |
| { |
| struct ifreq ifr; |
| int fd; |
| char *ifname = ife->name; |
| |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) |
| return (-1); |
| ife->flags = ifr.ifr_flags; |
| |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(skfd, SIOCGIFHWADDR, &ifr) < 0) |
| memset(ife->hwaddr, 0, 32); |
| else |
| memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8); |
| |
| ife->type = ifr.ifr_hwaddr.sa_family; |
| |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(skfd, SIOCGIFMETRIC, &ifr) < 0) |
| ife->metric = 0; |
| else |
| ife->metric = ifr.ifr_metric; |
| |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(skfd, SIOCGIFMTU, &ifr) < 0) |
| ife->mtu = 0; |
| else |
| ife->mtu = ifr.ifr_mtu; |
| |
| #ifdef SIOCGIFMAP |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0) |
| ife->map = ifr.ifr_map; |
| else |
| #endif |
| memset(&ife->map, 0, sizeof(struct ifmap)); |
| |
| #ifdef HAVE_TXQUEUELEN |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) < 0) |
| ife->tx_queue_len = -1; /* unknown value */ |
| else |
| ife->tx_queue_len = ifr.ifr_qlen; |
| #else |
| ife->tx_queue_len = -1; /* unknown value */ |
| #endif |
| |
| #if HAVE_AFINET |
| /* IPv4 address? */ |
| fd = get_socket_for_af(AF_INET); |
| if (fd >= 0) { |
| strcpy(ifr.ifr_name, ifname); |
| ifr.ifr_addr.sa_family = AF_INET; |
| if (ioctl(fd, SIOCGIFADDR, &ifr) == 0) { |
| ife->has_ip = 1; |
| ife->addr = ifr.ifr_addr; |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(fd, SIOCGIFDSTADDR, &ifr) < 0) |
| memset(&ife->dstaddr, 0, sizeof(struct sockaddr)); |
| else |
| ife->dstaddr = ifr.ifr_dstaddr; |
| |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(fd, SIOCGIFBRDADDR, &ifr) < 0) |
| memset(&ife->broadaddr, 0, sizeof(struct sockaddr)); |
| else |
| ife->broadaddr = ifr.ifr_broadaddr; |
| |
| strcpy(ifr.ifr_name, ifname); |
| if (ioctl(fd, SIOCGIFNETMASK, &ifr) < 0) |
| memset(&ife->netmask, 0, sizeof(struct sockaddr)); |
| else |
| ife->netmask = ifr.ifr_netmask; |
| } else |
| memset(&ife->addr, 0, sizeof(struct sockaddr)); |
| } |
| #endif |
| |
| return 0; |
| } |
| |
| |
| static int do_if_fetch(struct interface *ife) |
| { |
| if (if_fetch(ife) < 0) { |
| char *errmsg; |
| |
| if (errno == ENODEV) { |
| /* Give better error message for this case. */ |
| errmsg = "Device not found"; |
| } else { |
| errmsg = strerror(errno); |
| } |
| bb_error_msg("%s: error fetching interface information: %s", |
| ife->name, errmsg); |
| return -1; |
| } |
| return 0; |
| } |
| |
| /* This structure defines hardware protocols and their handlers. */ |
| struct hwtype { |
| const char * const name; |
| const char *title; |
| int type; |
| int alen; |
| char *(*print) (unsigned char *); |
| int (*input) (char *, struct sockaddr *); |
| int (*activate) (int fd); |
| int suppress_null_addr; |
| }; |
| |
| static const struct hwtype unspec_hwtype = { |
| "unspec", "UNSPEC", -1, 0, |
| UNSPEC_print, NULL, NULL |
| }; |
| |
| static const struct hwtype loop_hwtype = { |
| "loop", "Local Loopback", ARPHRD_LOOPBACK, 0, |
| NULL, NULL, NULL |
| }; |
| |
| #if HAVE_HWETHER |
| #include <net/if_arp.h> |
| |
| #if (__GLIBC__ >=2 && __GLIBC_MINOR >= 1) || defined(_NEWLIB_VERSION) |
| #include <net/ethernet.h> |
| #else |
| #include <linux/if_ether.h> |
| #endif |
| |
| /* Display an Ethernet address in readable format. */ |
| static char *pr_ether(unsigned char *ptr) |
| { |
| static char buff[64]; |
| |
| snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X", |
| (ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377), |
| (ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377) |
| ); |
| return (buff); |
| } |
| |
| static const struct hwtype ether_hwtype = { |
| "ether", "Ethernet", ARPHRD_ETHER, ETH_ALEN, |
| pr_ether, NULL /* UNUSED in_ether */ , NULL |
| }; |
| |
| |
| #endif /* HAVE_HWETHER */ |
| |
| |
| #if HAVE_HWPPP |
| |
| #include <net/if_arp.h> |
| |
| static const struct hwtype ppp_hwtype = { |
| "ppp", "Point-Point Protocol", ARPHRD_PPP, 0, |
| NULL, NULL, NULL /* UNUSED do_ppp */ , 0 |
| }; |
| |
| |
| #endif /* HAVE_PPP */ |
| |
| static const struct hwtype * const hwtypes[] = { |
| |
| &loop_hwtype, |
| |
| #if HAVE_HWSTRIP |
| &strip_hwtype, |
| #endif |
| #if HAVE_HWETHER |
| ðer_hwtype, |
| #endif |
| #if HAVE_HWTUNNEL |
| &tunnel_hwtype, |
| #endif |
| #if HAVE_HWPPP |
| &ppp_hwtype, |
| #endif |
| &unspec_hwtype, |
| NULL |
| }; |
| |
| #ifdef IFF_PORTSEL |
| static const char * const if_port_text[] = { |
| /* Keep in step with <linux/netdevice.h> */ |
| "unknown", |
| "10base2", |
| "10baseT", |
| "AUI", |
| "100baseT", |
| "100baseTX", |
| "100baseFX", |
| NULL |
| }; |
| #endif |
| |
| /* Check our hardware type table for this type. */ |
| static const struct hwtype *get_hwntype(int type) |
| { |
| const struct hwtype * const *hwp; |
| |
| hwp = hwtypes; |
| while (*hwp != NULL) { |
| if ((*hwp)->type == type) |
| return (*hwp); |
| hwp++; |
| } |
| return (NULL); |
| } |
| |
| /* return 1 if address is all zeros */ |
| static int hw_null_address(const struct hwtype *hw, void *ap) |
| { |
| unsigned int i; |
| unsigned char *address = (unsigned char *) ap; |
| |
| for (i = 0; i < hw->alen; i++) |
| if (address[i]) |
| return 0; |
| return 1; |
| } |
| |
| static const char TRext[] = "\0\0\0Ki\0Mi\0Gi\0Ti"; |
| |
| static void print_bytes_scaled(unsigned long long ull, const char *end) |
| { |
| unsigned long long int_part; |
| const char *ext; |
| unsigned int frac_part; |
| int i; |
| |
| frac_part = 0; |
| ext = TRext; |
| int_part = ull; |
| i = 4; |
| do { |
| if (int_part >= 1024) { |
| frac_part = ((((unsigned int) int_part) & (1024-1)) * 10) / 1024; |
| int_part /= 1024; |
| ext += 3; /* KiB, MiB, GiB, TiB */ |
| } |
| --i; |
| } while (i); |
| |
| printf("X bytes:%llu (%llu.%u %sB)%s", ull, int_part, frac_part, ext, end); |
| } |
| |
| static const char * const ife_print_flags_strs[] = { |
| "UP ", |
| "BROADCAST ", |
| "DEBUG ", |
| "LOOPBACK ", |
| "POINTOPOINT ", |
| "NOTRAILERS ", |
| "RUNNING ", |
| "NOARP ", |
| "PROMISC ", |
| "ALLMULTI ", |
| "SLAVE ", |
| "MASTER ", |
| "MULTICAST ", |
| #ifdef HAVE_DYNAMIC |
| "DYNAMIC " |
| #endif |
| }; |
| |
| static const unsigned short ife_print_flags_mask[] = { |
| IFF_UP, |
| IFF_BROADCAST, |
| IFF_DEBUG, |
| IFF_LOOPBACK, |
| IFF_POINTOPOINT, |
| IFF_NOTRAILERS, |
| IFF_RUNNING, |
| IFF_NOARP, |
| IFF_PROMISC, |
| IFF_ALLMULTI, |
| IFF_SLAVE, |
| IFF_MASTER, |
| IFF_MULTICAST, |
| #ifdef HAVE_DYNAMIC |
| IFF_DYNAMIC |
| #endif |
| 0 |
| }; |
| |
| static void ife_print(struct interface *ptr) |
| { |
| struct aftype *ap; |
| const struct hwtype *hw; |
| int hf; |
| int can_compress = 0; |
| |
| #if HAVE_AFINET6 |
| FILE *f; |
| char addr6[40], devname[20]; |
| struct sockaddr_in6 sap; |
| int plen, scope, dad_status, if_idx; |
| char addr6p[8][5]; |
| #endif |
| |
| ap = get_afntype(ptr->addr.sa_family); |
| if (ap == NULL) |
| ap = get_afntype(0); |
| |
| hf = ptr->type; |
| |
| if (hf == ARPHRD_CSLIP || hf == ARPHRD_CSLIP6) |
| can_compress = 1; |
| |
| hw = get_hwntype(hf); |
| if (hw == NULL) |
| hw = get_hwntype(-1); |
| |
| printf("%-9.9s Link encap:%s ", ptr->name, hw->title); |
| /* For some hardware types (eg Ash, ATM) we don't print the |
| hardware address if it's null. */ |
| if (hw->print != NULL && (!(hw_null_address(hw, ptr->hwaddr) && |
| hw->suppress_null_addr))) |
| printf("HWaddr %s ", hw->print((unsigned char *)ptr->hwaddr)); |
| #ifdef IFF_PORTSEL |
| if (ptr->flags & IFF_PORTSEL) { |
| printf("Media:%s", if_port_text[ptr->map.port] /* [0] */); |
| if (ptr->flags & IFF_AUTOMEDIA) |
| printf("(auto)"); |
| } |
| #endif |
| printf("\n"); |
| |
| #if HAVE_AFINET |
| if (ptr->has_ip) { |
| printf(" %s addr:%s ", ap->name, |
| ap->sprint(&ptr->addr, 1)); |
| if (ptr->flags & IFF_POINTOPOINT) { |
| printf(" P-t-P:%s ", ap->sprint(&ptr->dstaddr, 1)); |
| } |
| if (ptr->flags & IFF_BROADCAST) { |
| printf(" Bcast:%s ", ap->sprint(&ptr->broadaddr, 1)); |
| } |
| printf(" Mask:%s\n", ap->sprint(&ptr->netmask, 1)); |
| } |
| #endif |
| |
| #if HAVE_AFINET6 |
| |
| #define IPV6_ADDR_ANY 0x0000U |
| |
| #define IPV6_ADDR_UNICAST 0x0001U |
| #define IPV6_ADDR_MULTICAST 0x0002U |
| #define IPV6_ADDR_ANYCAST 0x0004U |
| |
| #define IPV6_ADDR_LOOPBACK 0x0010U |
| #define IPV6_ADDR_LINKLOCAL 0x0020U |
| #define IPV6_ADDR_SITELOCAL 0x0040U |
| |
| #define IPV6_ADDR_COMPATv4 0x0080U |
| |
| #define IPV6_ADDR_SCOPE_MASK 0x00f0U |
| |
| #define IPV6_ADDR_MAPPED 0x1000U |
| #define IPV6_ADDR_RESERVED 0x2000U /* reserved address space */ |
| |
| if ((f = fopen(_PATH_PROCNET_IFINET6, "r")) != NULL) { |
| while (fscanf |
| (f, "%4s%4s%4s%4s%4s%4s%4s%4s %02x %02x %02x %02x %20s\n", |
| addr6p[0], addr6p[1], addr6p[2], addr6p[3], addr6p[4], |
| addr6p[5], addr6p[6], addr6p[7], &if_idx, &plen, &scope, |
| &dad_status, devname) != EOF) { |
| if (!strcmp(devname, ptr->name)) { |
| sprintf(addr6, "%s:%s:%s:%s:%s:%s:%s:%s", |
| addr6p[0], addr6p[1], addr6p[2], addr6p[3], |
| addr6p[4], addr6p[5], addr6p[6], addr6p[7]); |
| inet_pton(AF_INET6, addr6, |
| (struct sockaddr *) &sap.sin6_addr); |
| sap.sin6_family = AF_INET6; |
| printf(" inet6 addr: %s/%d", |
| inet6_aftype.sprint((struct sockaddr *) &sap, 1), |
| plen); |
| printf(" Scope:"); |
| switch (scope & IPV6_ADDR_SCOPE_MASK) { |
| case 0: |
| printf("Global"); |
| break; |
| case IPV6_ADDR_LINKLOCAL: |
| printf("Link"); |
| break; |
| case IPV6_ADDR_SITELOCAL: |
| printf("Site"); |
| break; |
| case IPV6_ADDR_COMPATv4: |
| printf("Compat"); |
| break; |
| case IPV6_ADDR_LOOPBACK: |
| printf("Host"); |
| break; |
| default: |
| printf("Unknown"); |
| } |
| printf("\n"); |
| } |
| } |
| fclose(f); |
| } |
| #endif |
| |
| printf(" "); |
| /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */ |
| |
| if (ptr->flags == 0) { |
| printf("[NO FLAGS] "); |
| } else { |
| int i = 0; |
| do { |
| if (ptr->flags & ife_print_flags_mask[i]) { |
| printf(ife_print_flags_strs[i]); |
| } |
| } while (ife_print_flags_mask[++i]); |
| } |
| |
| /* DONT FORGET TO ADD THE FLAGS IN ife_print_short */ |
| printf(" MTU:%d Metric:%d", ptr->mtu, ptr->metric ? ptr->metric : 1); |
| #ifdef SIOCSKEEPALIVE |
| if (ptr->outfill || ptr->keepalive) |
| printf(" Outfill:%d Keepalive:%d", ptr->outfill, ptr->keepalive); |
| #endif |
| printf("\n"); |
| |
| /* If needed, display the interface statistics. */ |
| |
| if (ptr->statistics_valid) { |
| /* XXX: statistics are currently only printed for the primary address, |
| * not for the aliases, although strictly speaking they're shared |
| * by all addresses. |
| */ |
| printf(" "); |
| |
| printf("RX packets:%llu errors:%lu dropped:%lu overruns:%lu frame:%lu\n", |
| ptr->stats.rx_packets, ptr->stats.rx_errors, |
| ptr->stats.rx_dropped, ptr->stats.rx_fifo_errors, |
| ptr->stats.rx_frame_errors); |
| if (can_compress) |
| printf(" compressed:%lu\n", |
| ptr->stats.rx_compressed); |
| printf(" "); |
| printf("TX packets:%llu errors:%lu dropped:%lu overruns:%lu carrier:%lu\n", |
| ptr->stats.tx_packets, ptr->stats.tx_errors, |
| ptr->stats.tx_dropped, ptr->stats.tx_fifo_errors, |
| ptr->stats.tx_carrier_errors); |
| printf(" collisions:%lu ", ptr->stats.collisions); |
| if (can_compress) |
| printf("compressed:%lu ", ptr->stats.tx_compressed); |
| if (ptr->tx_queue_len != -1) |
| printf("txqueuelen:%d ", ptr->tx_queue_len); |
| printf("\n R"); |
| print_bytes_scaled(ptr->stats.rx_bytes, " T"); |
| print_bytes_scaled(ptr->stats.tx_bytes, "\n"); |
| |
| } |
| |
| if ((ptr->map.irq || ptr->map.mem_start || ptr->map.dma || |
| ptr->map.base_addr)) { |
| printf(" "); |
| if (ptr->map.irq) |
| printf("Interrupt:%d ", ptr->map.irq); |
| if (ptr->map.base_addr >= 0x100) /* Only print devices using it for |
| I/O maps */ |
| printf("Base address:0x%lx ", |
| (unsigned long) ptr->map.base_addr); |
| if (ptr->map.mem_start) { |
| printf("Memory:%lx-%lx ", ptr->map.mem_start, |
| ptr->map.mem_end); |
| } |
| if (ptr->map.dma) |
| printf("DMA chan:%x ", ptr->map.dma); |
| printf("\n"); |
| } |
| printf("\n"); |
| } |
| |
| |
| static int do_if_print(struct interface *ife, void *cookie) |
| { |
| int *opt_a = (int *) cookie; |
| int res; |
| |
| res = do_if_fetch(ife); |
| if (res >= 0) { |
| if ((ife->flags & IFF_UP) || *opt_a) |
| ife_print(ife); |
| } |
| return res; |
| } |
| |
| static struct interface *lookup_interface(char *name) |
| { |
| struct interface *ife = NULL; |
| |
| if (if_readlist_proc(name) < 0) |
| return NULL; |
| ife = add_interface(name); |
| return ife; |
| } |
| |
| /* for ipv4 add/del modes */ |
| static int if_print(char *ifname) |
| { |
| int res; |
| |
| if (!ifname) { |
| res = for_all_interfaces(do_if_print, &interface_opt_a); |
| } else { |
| struct interface *ife; |
| |
| ife = lookup_interface(ifname); |
| res = do_if_fetch(ife); |
| if (res >= 0) |
| ife_print(ife); |
| } |
| return res; |
| } |
| |
| int display_interfaces(char *ifname); |
| int display_interfaces(char *ifname) |
| { |
| int status; |
| |
| /* Create a channel to the NET kernel. */ |
| if ((skfd = sockets_open(0)) < 0) { |
| bb_perror_msg_and_die("socket"); |
| } |
| |
| /* Do we have to show the current setup? */ |
| status = if_print(ifname); |
| #ifdef CONFIG_FEATURE_CLEAN_UP |
| sockets_close(); |
| #endif |
| exit(status < 0); |
| } |