/* * stolen from net-tools-1.59 and stripped down for busybox by * Erik Andersen * * 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, * 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 * * {1.34} - 19980630 - Arnaldo Carvalho de Melo * - 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) */ #include "inet_common.h" #include #include #include #include #include #include #include #include #include #include #include #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; }; /* 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 = { .name = "inet", .title = "DARPA Internet", .af = AF_INET, .alen = 4, .sprint = INET_sprint, .fd = -1 }; #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 = { .name = "inet6", .title = "IPv6", .af = AF_INET6, .alen = sizeof(struct in6_addr), .sprint = INET6_sprint, .fd = -1 }; #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[] = { &inet_aftype, #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 from nul-terminated p where p matches : after leading whitespace. If match is not made, set name empty and return unchanged p */ int namestart=0, nameend=0; while (isspace(p[namestart])) namestart++; nameend=namestart; while (p[nameend] && p[nameend]!=':' && !isspace(p[nameend])) nameend++; if (p[nameend]==':') { if ((nameend-namestart)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 /* 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)); } 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 = { .name = "unspec", .title = "UNSPEC", .type = -1, .print = UNSPEC_print }; static const struct hwtype loop_hwtype = { .name = "loop", .title = "Local Loopback", .type = ARPHRD_LOOPBACK }; #include #if (__GLIBC__ >=2 && __GLIBC_MINOR >= 1) || defined(_NEWLIB_VERSION) #include #else #include #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 = { .name = "ether", .title = "Ethernet", .type = ARPHRD_ETHER, .alen = ETH_ALEN, .print = pr_ether }; #include static const struct hwtype ppp_hwtype = { .name = "ppp", .title = "Point-to-Point Protocol", .type = ARPHRD_PPP }; #ifdef CONFIG_FEATURE_IPV6 static const struct hwtype sit_hwtype = { .name = "sit", .title = "IPv6-in-IPv4", .type = ARPHRD_SIT, .print = UNSPEC_print, .suppress_null_addr = 1 } ; #endif static const struct hwtype * const hwtypes[] = { &loop_hwtype, ðer_hwtype, &ppp_hwtype, &unspec_hwtype, #ifdef CONFIG_FEATURE_IPV6 &sit_hwtype, #endif NULL }; #ifdef IFF_PORTSEL static const char * const if_port_text[] = { /* Keep in step with */ "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 (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)); } #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); }