diff options
Diffstat (limited to 'release/src/router/busybox/networking/interface.c')
| -rw-r--r-- | release/src/router/busybox/networking/interface.c | 1292 |
1 files changed, 1292 insertions, 0 deletions
diff --git a/release/src/router/busybox/networking/interface.c b/release/src/router/busybox/networking/interface.c new file mode 100644 index 00000000..a4b58ec6 --- /dev/null +++ b/release/src/router/busybox/networking/interface.c @@ -0,0 +1,1292 @@ +/* vi: set sw=4 ts=4: */ +/* + * 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. + * + * + * 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) + */ + +#include <net/if.h> +#include <net/if_arp.h> +#include "inet_common.h" +#include "libbb.h" + + +#if ENABLE_FEATURE_HWIB +/* #include <linux/if_infiniband.h> */ +#undef INFINIBAND_ALEN +#define INFINIBAND_ALEN 20 +#endif + +#if ENABLE_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" + +#ifdef 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 + +/* Display an Internet socket address. */ +static const char* FAST_FUNC INET_sprint(struct sockaddr *sap, int numeric) +{ + static char *buff; /* defaults to NULL */ + + free(buff); + if (sap->sa_family == 0xFFFF || sap->sa_family == 0) + return "[NONE SET]"; + buff = INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00); + return buff; +} + +#ifdef UNUSED_AND_BUGGY +static int INET_getsock(char *bufp, struct sockaddr *sap) +{ + char *sp = bufp, *bp; + unsigned int i; + unsigned val; + struct sockaddr_in *sock_in; + + sock_in = (struct sockaddr_in *) sap; + sock_in->sin_family = AF_INET; + sock_in->sin_port = 0; + + val = 0; + bp = (char *) &val; + for (i = 0; i < sizeof(sock_in->sin_addr.s_addr); i++) { + *sp = toupper(*sp); + + if ((unsigned)(*sp - 'A') <= 5) + bp[i] |= (int) (*sp - ('A' - 10)); + else if (isdigit(*sp)) + bp[i] |= (int) (*sp - '0'); + else + return -1; + + bp[i] <<= 4; + sp++; + *sp = toupper(*sp); + + if ((unsigned)(*sp - 'A') <= 5) + bp[i] |= (int) (*sp - ('A' - 10)); + else if (isdigit(*sp)) + bp[i] |= (int) (*sp - '0'); + else + return -1; + + sp++; + } + sock_in->sin_addr.s_addr = htonl(val); + + return (sp - bufp); +} +#endif + +static int FAST_FUNC INET_input(/*int type,*/ const char *bufp, struct sockaddr *sap) +{ + return INET_resolve(bufp, (struct sockaddr_in *) sap, 0); +/* + switch (type) { + case 1: + return (INET_getsock(bufp, sap)); + case 256: + return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1)); + default: + return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0)); + } +*/ +} + +static const struct aftype inet_aftype = { + .name = "inet", + .title = "DARPA Internet", + .af = AF_INET, + .alen = 4, + .sprint = INET_sprint, + .input = INET_input, +}; + +#ifdef HAVE_AFINET6 + +/* Display an Internet socket address. */ +/* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */ +static const char* FAST_FUNC INET6_sprint(struct sockaddr *sap, int numeric) +{ + static char *buff; + + free(buff); + if (sap->sa_family == 0xFFFF || sap->sa_family == 0) + return "[NONE SET]"; + buff = INET6_rresolve((struct sockaddr_in6 *) sap, numeric); + return buff; +} + +#ifdef UNUSED +static int INET6_getsock(char *bufp, struct sockaddr *sap) +{ + struct sockaddr_in6 *sin6; + + sin6 = (struct sockaddr_in6 *) sap; + sin6->sin6_family = AF_INET6; + sin6->sin6_port = 0; + + if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0) + return -1; + + return 16; /* ?;) */ +} +#endif + +static int FAST_FUNC INET6_input(/*int type,*/ const char *bufp, struct sockaddr *sap) +{ + return INET6_resolve(bufp, (struct sockaddr_in6 *) sap); +/* + switch (type) { + case 1: + return (INET6_getsock(bufp, sap)); + default: + return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap)); + } +*/ +} + +static const struct aftype inet6_aftype = { + .name = "inet6", + .title = "IPv6", + .af = AF_INET6, + .alen = sizeof(struct in6_addr), + .sprint = INET6_sprint, + .input = INET6_input, +}; + +#endif /* HAVE_AFINET6 */ + +/* Display an UNSPEC address. */ +static char* FAST_FUNC UNSPEC_print(unsigned char *ptr) +{ + static char *buff; + + char *pos; + unsigned int i; + + if (!buff) + buff = xmalloc(sizeof(struct sockaddr) * 3 + 1); + 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 const char* FAST_FUNC UNSPEC_sprint(struct sockaddr *sap, int numeric UNUSED_PARAM) +{ + if (sap->sa_family == 0xFFFF || sap->sa_family == 0) + return "[NONE SET]"; + return UNSPEC_print((unsigned char *)sap->sa_data); +} + +static const struct aftype unspec_aftype = { + .name = "unspec", + .title = "UNSPEC", + .af = AF_UNSPEC, + .alen = 0, + .print = UNSPEC_print, + .sprint = UNSPEC_sprint, +}; + +static const struct aftype *const aftypes[] = { + &inet_aftype, +#ifdef HAVE_AFINET6 + &inet6_aftype, +#endif + &unspec_aftype, + NULL +}; + +/* Check our protocol family table for this family. */ +const struct aftype* FAST_FUNC get_aftype(const char *name) +{ + const struct aftype *const *afp; + + afp = aftypes; + while (*afp != NULL) { + if (!strcmp((*afp)->name, name)) + return (*afp); + afp++; + } + return NULL; +} + +/* Check our protocol family table for this family. */ +static const struct aftype *get_afntype(int af) +{ + const struct aftype *const *afp; + + afp = aftypes; + while (*afp != NULL) { + if ((*afp)->af == af) + return *afp; + afp++; + } + return NULL; +} + +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 */ +}; + + +smallint interface_opt_a; /* show all interfaces */ + +static struct interface *int_list, *int_last; + + +#if 0 +/* like strcmp(), but knows about numbers */ +except that the freshly added calls to xatoul() brf on ethernet aliases with +uClibc with e.g.: ife->name='lo' name='eth0:1' +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 xatoul(a_ptr) > xatoul(b_ptr) ? 1 : -1; + } + return *a - *b; +} +#endif + +static struct interface *add_interface(char *name) +{ + struct interface *ife, **nextp, *new; + + for (ife = int_last; ife; ife = ife->prev) { + int n = /*n*/strcmp(ife->name, name); + + if (n == 0) + return ife; + if (n < 0) + break; + } + + new = xzalloc(sizeof(*new)); + strncpy_IFNAMSIZ(new->name, name); + 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 char *get_name(char *name, char *p) +{ + /* Extract <name> from nul-terminated p where p matches + <name>: 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) < IFNAMSIZ) { + memcpy(name, &p[namestart], nameend - namestart); + name[nameend - namestart] = '\0'; + p = &p[nameend]; + } else { + /* Interface name too large */ + name[0] = '\0'; + } + } else { + /* trailing ':' 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 int procnetdev_version(char *buf) +{ + if (strstr(buf, "compressed")) + return 2; + if (strstr(buf, "bytes")) + return 1; + return 0; +} + +static int if_readconf(void) +{ + int numreqs = 30; + struct ifconf ifc; + struct ifreq *ifr; + int n, err = -1; + int skfd; + + ifc.ifc_buf = NULL; + + /* SIOCGIFCONF currently seems to only work properly on AF_INET sockets + (as of 2.1.128) */ + skfd = socket(AF_INET, SOCK_DGRAM, 0); + if (skfd < 0) { + bb_perror_msg("error: no inet socket available"); + return -1; + } + + for (;;) { + ifc.ifc_len = sizeof(struct ifreq) * numreqs; + ifc.ifc_buf = xrealloc(ifc.ifc_buf, ifc.ifc_len); + + if (ioctl_or_warn(skfd, SIOCGIFCONF, &ifc) < 0) { + goto out; + } + if (ifc.ifc_len == (int)(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: + close(skfd); + free(ifc.ifc_buf); + return err; +} + +static int if_readlist_proc(char *target) +{ + static smallint 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_or_warn(_PATH_PROCNET_DEV, "r"); + if (!fh) { + 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)) { + bb_perror_msg(_PATH_PROCNET_DEV); + err = -1; + proc_read = 0; + } + fclose(fh); + return err; +} + +static int if_readlist(void) +{ + int err = if_readlist_proc(NULL); + /* Needed in order to get ethN:M aliases */ + if (!err) + err = if_readconf(); + return err; +} + +/* Fetch the interface configuration from the kernel. */ +static int if_fetch(struct interface *ife) +{ + struct ifreq ifr; + char *ifname = ife->name; + int skfd; + + skfd = xsocket(AF_INET, SOCK_DGRAM, 0); + + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) { + close(skfd); + return -1; + } + ife->flags = ifr.ifr_flags; + + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + memset(ife->hwaddr, 0, 32); + if (ioctl(skfd, SIOCGIFHWADDR, &ifr) >= 0) + memcpy(ife->hwaddr, ifr.ifr_hwaddr.sa_data, 8); + + ife->type = ifr.ifr_hwaddr.sa_family; + + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + ife->metric = 0; + if (ioctl(skfd, SIOCGIFMETRIC, &ifr) >= 0) + ife->metric = ifr.ifr_metric; + + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + ife->mtu = 0; + if (ioctl(skfd, SIOCGIFMTU, &ifr) >= 0) + ife->mtu = ifr.ifr_mtu; + + memset(&ife->map, 0, sizeof(struct ifmap)); +#ifdef SIOCGIFMAP + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0) + ife->map = ifr.ifr_map; +#endif + +#ifdef HAVE_TXQUEUELEN + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + ife->tx_queue_len = -1; /* unknown value */ + if (ioctl(skfd, SIOCGIFTXQLEN, &ifr) >= 0) + ife->tx_queue_len = ifr.ifr_qlen; +#else + ife->tx_queue_len = -1; /* unknown value */ +#endif + + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + ifr.ifr_addr.sa_family = AF_INET; + memset(&ife->addr, 0, sizeof(struct sockaddr)); + if (ioctl(skfd, SIOCGIFADDR, &ifr) == 0) { + ife->has_ip = 1; + ife->addr = ifr.ifr_addr; + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + memset(&ife->dstaddr, 0, sizeof(struct sockaddr)); + if (ioctl(skfd, SIOCGIFDSTADDR, &ifr) >= 0) + ife->dstaddr = ifr.ifr_dstaddr; + + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + memset(&ife->broadaddr, 0, sizeof(struct sockaddr)); + if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0) + ife->broadaddr = ifr.ifr_broadaddr; + + strncpy_IFNAMSIZ(ifr.ifr_name, ifname); + memset(&ife->netmask, 0, sizeof(struct sockaddr)); + if (ioctl(skfd, SIOCGIFNETMASK, &ifr) >= 0) + ife->netmask = ifr.ifr_netmask; + } + + close(skfd); + return 0; +} + +static int do_if_fetch(struct interface *ife) +{ + if (if_fetch(ife) < 0) { + const 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; +} + +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 <net/if_arp.h> + +#if (defined(__GLIBC__) && __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* FAST_FUNC ether_print(unsigned char *ptr) +{ + static char *buff; + + free(buff); + buff = xasprintf("%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 int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap); + +static const struct hwtype ether_hwtype = { + .name = "ether", + .title = "Ethernet", + .type = ARPHRD_ETHER, + .alen = ETH_ALEN, + .print = ether_print, + .input = ether_input +}; + +static unsigned hexchar2int(char c) +{ + if (isdigit(c)) + return c - '0'; + c &= ~0x20; /* a -> A */ + if ((unsigned)(c - 'A') <= 5) + return c - ('A' - 10); + return ~0U; +} + +/* Input an Ethernet address and convert to binary. */ +static int FAST_FUNC ether_input(const char *bufp, struct sockaddr *sap) +{ + unsigned char *ptr; + char c; + int i; + unsigned val; + + sap->sa_family = ether_hwtype.type; + ptr = (unsigned char*) sap->sa_data; + + i = 0; + while ((*bufp != '\0') && (i < ETH_ALEN)) { + val = hexchar2int(*bufp++) * 0x10; + if (val > 0xff) { + errno = EINVAL; + return -1; + } + c = *bufp; + if (c == ':' || c == 0) + val >>= 4; + else { + val |= hexchar2int(c); + if (val > 0xff) { + errno = EINVAL; + return -1; + } + } + if (c != 0) + bufp++; + *ptr++ = (unsigned char) val; + i++; + + /* We might get a semicolon here - not required. */ + if (*bufp == ':') { + bufp++; + } + } + return 0; +} + +#include <net/if_arp.h> + +static const struct hwtype ppp_hwtype = { + .name = "ppp", + .title = "Point-to-Point Protocol", + .type = ARPHRD_PPP +}; + +#if ENABLE_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 +#if ENABLE_FEATURE_HWIB +static const struct hwtype ib_hwtype = { + .name = "infiniband", + .title = "InfiniBand", + .type = ARPHRD_INFINIBAND, + .alen = INFINIBAND_ALEN, + .print = UNSPEC_print, + .input = in_ib, +}; +#endif + + +static const struct hwtype *const hwtypes[] = { + &loop_hwtype, + ðer_hwtype, + &ppp_hwtype, + &unspec_hwtype, +#if ENABLE_FEATURE_IPV6 + &sit_hwtype, +#endif +#if ENABLE_FEATURE_HWIB + &ib_hwtype, +#endif + 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. */ +const struct hwtype* FAST_FUNC get_hwtype(const char *name) +{ + const struct hwtype *const *hwp; + + hwp = hwtypes; + while (*hwp != NULL) { + if (!strcmp((*hwp)->name, name)) + return (*hwp); + hwp++; + } + return NULL; +} + +/* Check our hardware type table for this type. */ +const struct hwtype* FAST_FUNC 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) +{ + 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[] ALIGN1 = "\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); +} + + +#ifdef 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 */ + + +static void ife_print6(struct interface *ptr) +{ + + FILE *f; + char addr6[40], devname[20]; + struct sockaddr_in6 sap; + int plen, scope, dad_status, if_idx; + char addr6p[8][5]; + + f = fopen_for_read(_PATH_PROCNET_IFINET6); + if (f == NULL) + return; + + while (fscanf + (f, "%4s%4s%4s%4s%4s%4s%4s%4s %08x %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_sprint((struct sockaddr *) &sap, 1), + plen); + printf(" Scope:"); + switch (scope & IPV6_ADDR_SCOPE_MASK) { + case 0: + puts("Global"); + break; + case IPV6_ADDR_LINKLOCAL: + puts("Link"); + break; + case IPV6_ADDR_SITELOCAL: + puts("Site"); + break; + case IPV6_ADDR_COMPATv4: + puts("Compat"); + break; + case IPV6_ADDR_LOOPBACK: + puts("Host"); + break; + default: + puts("Unknown"); + } + } + } + fclose(f); +} +#else +#define ife_print6(a) ((void)0) +#endif + + +static void ife_print(struct interface *ptr) +{ + const struct aftype *ap; + const struct hwtype *hw; + int hf; + int can_compress = 0; + + 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("%-10.10s 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 + bb_putchar('\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)); + } + + ife_print6(ptr); + + printf(" "); + /* DONT FORGET TO ADD THE FLAGS IN ife_print_short, too */ + + if (ptr->flags == 0) { + printf("[NO FLAGS] "); + } else { + static const char ife_print_flags_strs[] ALIGN1 = + "UP\0" + "BROADCAST\0" + "DEBUG\0" + "LOOPBACK\0" + "POINTOPOINT\0" + "NOTRAILERS\0" + "RUNNING\0" + "NOARP\0" + "PROMISC\0" + "ALLMULTI\0" + "SLAVE\0" + "MASTER\0" + "MULTICAST\0" +#ifdef HAVE_DYNAMIC + "DYNAMIC\0" +#endif + ; + static const unsigned short ife_print_flags_mask[] ALIGN2 = { + 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 + }; + const unsigned short *mask = ife_print_flags_mask; + const char *str = ife_print_flags_strs; + do { + if (ptr->flags & *mask) { + printf("%s ", str); + } + mask++; + str += strlen(str) + 1; + } while (*str); + } + + /* 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 + bb_putchar('\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); + bb_putchar('\n'); + } + bb_putchar('\n'); +} + +static int do_if_print(struct interface *ife) /*, int *opt_a)*/ +{ + int res; + + res = do_if_fetch(ife); + if (res >= 0) { + if ((ife->flags & IFF_UP) || interface_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; +} + +#ifdef UNUSED +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; +} +#endif + +/* for ipv4 add/del modes */ +static int if_print(char *ifname) +{ + struct interface *ife; + int res; + + if (!ifname) { + /*res = for_all_interfaces(do_if_print, &interface_opt_a);*/ + if (!int_list && (if_readlist() < 0)) + return -1; + for (ife = int_list; ife; ife = ife->next) { + int err = do_if_print(ife); /*, &interface_opt_a);*/ + if (err) + return err; + } + return 0; + } + ife = lookup_interface(ifname); + res = do_if_fetch(ife); + if (res >= 0) + ife_print(ife); + return res; +} + +#if ENABLE_FEATURE_HWIB +/* Input an Infiniband address and convert to binary. */ +int FAST_FUNC in_ib(const char *bufp, struct sockaddr *sap) +{ + unsigned char *ptr; + char c; + const char *orig; + int i; + unsigned val; + + sap->sa_family = ib_hwtype.type; + ptr = (unsigned char *) sap->sa_data; + + i = 0; + orig = bufp; + while ((*bufp != '\0') && (i < INFINIBAND_ALEN)) { + val = 0; + c = *bufp++; + if (isdigit(c)) + val = c - '0'; + else if (c >= 'a' && c <= 'f') + val = c - 'a' + 10; + else if (c >= 'A' && c <= 'F') + val = c - 'A' + 10; + else { + errno = EINVAL; + return -1; + } + val <<= 4; + c = *bufp; + if (isdigit(c)) + val |= c - '0'; + else if (c >= 'a' && c <= 'f') + val |= c - 'a' + 10; + else if (c >= 'A' && c <= 'F') + val |= c - 'A' + 10; + else if (c == ':' || c == 0) + val >>= 4; + else { + errno = EINVAL; + return -1; + } + if (c != 0) + bufp++; + *ptr++ = (unsigned char) (val & 0377); + i++; + + /* We might get a semicolon here - not required. */ + if (*bufp == ':') { + bufp++; + } + } +#ifdef DEBUG + fprintf(stderr, "in_ib(%s): %s\n", orig, UNSPEC_print(sap->sa_data)); +#endif + return 0; +} +#endif + + +int FAST_FUNC display_interfaces(char *ifname) +{ + int status; + + status = if_print(ifname); + + return (status < 0); /* status < 0 == 1 -- error */ +} |