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ad2fa65fc0faf4ebaad1697bec56d6aaebb7117a
busybox/networking/interface.c
Denis Vlasenko a60f84ebf0 *: rename ATTRIBUTE_XXX to just XXX.
2008-07-05 09:18:54 +00:00

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/* 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;
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(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 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 inline 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(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(skfd, SIOCGIFFLAGS, &ifr) < 0) {
close(skfd);
return -1;
}
ife->flags = ifr.ifr_flags;
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
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(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
ife->metric = 0;
if (ioctl(skfd, SIOCGIFMETRIC, &ifr) >= 0)
ife->metric = ifr.ifr_metric;
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
ife->mtu = 0;
if (ioctl(skfd, SIOCGIFMTU, &ifr) >= 0)
ife->mtu = ifr.ifr_mtu;
memset(&ife->map, 0, sizeof(struct ifmap));
#ifdef SIOCGIFMAP
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(skfd, SIOCGIFMAP, &ifr) == 0)
ife->map = ifr.ifr_map;
#endif
#ifdef HAVE_TXQUEUELEN
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
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(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
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(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
memset(&ife->dstaddr, 0, sizeof(struct sockaddr));
if (ioctl(skfd, SIOCGIFDSTADDR, &ifr) >= 0)
ife->dstaddr = ifr.ifr_dstaddr;
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
memset(&ife->broadaddr, 0, sizeof(struct sockaddr));
if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0)
ife->broadaddr = ifr.ifr_broadaddr;
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
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,
&ether_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);
}
static void ife_print(struct interface *ptr)
{
const struct aftype *ap;
const struct hwtype *hw;
int hf;
int can_compress = 0;
#ifdef 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
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));
}
#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 */
f = fopen(_PATH_PROCNET_IFINET6, "r");
if (f != NULL) {
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);
}
#endif
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 */
}
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