mirror of
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This change retains "or later" state! No licensing _changes_ here, only form is adjusted (article, space between "GPL" and "v2" and so on). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
1233 lines
29 KiB
C
1233 lines
29 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* stolen from net-tools-1.59 and stripped down for busybox by
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* Erik Andersen <andersen@codepoet.org>
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*
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* Heavily modified by Manuel Novoa III Mar 12, 2001
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*
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* Added print_bytes_scaled function to reduce code size.
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* Added some (potentially) missing defines.
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* Improved display support for -a and for a named interface.
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*
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* -----------------------------------------------------------
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*
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* ifconfig This file contains an implementation of the command
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* that either displays or sets the characteristics of
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* one or more of the system's networking interfaces.
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*
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*
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* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
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* and others. Copyright 1993 MicroWalt Corporation
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*
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* Patched to support 'add' and 'del' keywords for INET(4) addresses
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* by Mrs. Brisby <mrs.brisby@nimh.org>
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*
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* {1.34} - 19980630 - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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* - gettext instead of catgets for i18n
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* 10/1998 - Andi Kleen. Use interface list primitives.
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* 20001008 - Bernd Eckenfels, Patch from RH for setting mtu
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* (default AF was wrong)
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*/
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#include <net/if.h>
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#include <net/if_arp.h>
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#if (defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1) || defined(_NEWLIB_VERSION)
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# include <net/ethernet.h>
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#else
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# include <linux/if_ether.h>
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#endif
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#include "libbb.h"
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#include "inet_common.h"
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#if ENABLE_FEATURE_HWIB
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/* #include <linux/if_infiniband.h> */
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# undef INFINIBAND_ALEN
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# define INFINIBAND_ALEN 20
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#endif
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#if ENABLE_FEATURE_IPV6
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# define HAVE_AFINET6 1
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#else
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# undef HAVE_AFINET6
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#endif
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#define _PATH_PROCNET_DEV "/proc/net/dev"
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#define _PATH_PROCNET_IFINET6 "/proc/net/if_inet6"
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#ifdef HAVE_AFINET6
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# ifndef _LINUX_IN6_H
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/*
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* This is from linux/include/net/ipv6.h
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*/
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struct in6_ifreq {
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struct in6_addr ifr6_addr;
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uint32_t ifr6_prefixlen;
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unsigned int ifr6_ifindex;
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};
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# endif
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#endif /* HAVE_AFINET6 */
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/* Defines for glibc2.0 users. */
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#ifndef SIOCSIFTXQLEN
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# define SIOCSIFTXQLEN 0x8943
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# define SIOCGIFTXQLEN 0x8942
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#endif
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/* ifr_qlen is ifru_ivalue, but it isn't present in 2.0 kernel headers */
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#ifndef ifr_qlen
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# define ifr_qlen ifr_ifru.ifru_mtu
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#endif
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#ifndef HAVE_TXQUEUELEN
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# define HAVE_TXQUEUELEN 1
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#endif
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#ifndef IFF_DYNAMIC
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# define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses */
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#endif
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/* Display an Internet socket address. */
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static const char* FAST_FUNC INET_sprint(struct sockaddr *sap, int numeric)
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{
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static char *buff; /* defaults to NULL */
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free(buff);
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if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
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return "[NONE SET]";
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buff = INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00);
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return buff;
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}
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#ifdef UNUSED_AND_BUGGY
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static int INET_getsock(char *bufp, struct sockaddr *sap)
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{
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char *sp = bufp, *bp;
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unsigned int i;
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unsigned val;
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struct sockaddr_in *sock_in;
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sock_in = (struct sockaddr_in *) sap;
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sock_in->sin_family = AF_INET;
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sock_in->sin_port = 0;
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val = 0;
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bp = (char *) &val;
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for (i = 0; i < sizeof(sock_in->sin_addr.s_addr); i++) {
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*sp = toupper(*sp);
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if ((unsigned)(*sp - 'A') <= 5)
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bp[i] |= (int) (*sp - ('A' - 10));
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else if (isdigit(*sp))
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bp[i] |= (int) (*sp - '0');
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else
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return -1;
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bp[i] <<= 4;
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sp++;
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*sp = toupper(*sp);
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if ((unsigned)(*sp - 'A') <= 5)
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bp[i] |= (int) (*sp - ('A' - 10));
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else if (isdigit(*sp))
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bp[i] |= (int) (*sp - '0');
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else
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return -1;
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sp++;
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}
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sock_in->sin_addr.s_addr = htonl(val);
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return (sp - bufp);
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}
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#endif
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static int FAST_FUNC INET_input(/*int type,*/ const char *bufp, struct sockaddr *sap)
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{
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return INET_resolve(bufp, (struct sockaddr_in *) sap, 0);
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/*
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switch (type) {
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case 1:
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return (INET_getsock(bufp, sap));
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case 256:
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return (INET_resolve(bufp, (struct sockaddr_in *) sap, 1));
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default:
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return (INET_resolve(bufp, (struct sockaddr_in *) sap, 0));
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}
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*/
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}
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static const struct aftype inet_aftype = {
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.name = "inet",
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.title = "DARPA Internet",
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.af = AF_INET,
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.alen = 4,
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.sprint = INET_sprint,
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.input = INET_input,
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};
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#ifdef HAVE_AFINET6
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/* Display an Internet socket address. */
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/* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */
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static const char* FAST_FUNC INET6_sprint(struct sockaddr *sap, int numeric)
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{
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static char *buff;
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free(buff);
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if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
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return "[NONE SET]";
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buff = INET6_rresolve((struct sockaddr_in6 *) sap, numeric);
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return buff;
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}
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#ifdef UNUSED
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static int INET6_getsock(char *bufp, struct sockaddr *sap)
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{
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struct sockaddr_in6 *sin6;
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sin6 = (struct sockaddr_in6 *) sap;
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sin6->sin6_family = AF_INET6;
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sin6->sin6_port = 0;
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if (inet_pton(AF_INET6, bufp, sin6->sin6_addr.s6_addr) <= 0)
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return -1;
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return 16; /* ?;) */
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}
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#endif
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static int FAST_FUNC INET6_input(/*int type,*/ const char *bufp, struct sockaddr *sap)
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{
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return INET6_resolve(bufp, (struct sockaddr_in6 *) sap);
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/*
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switch (type) {
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case 1:
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return (INET6_getsock(bufp, sap));
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default:
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return (INET6_resolve(bufp, (struct sockaddr_in6 *) sap));
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}
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*/
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}
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static const struct aftype inet6_aftype = {
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.name = "inet6",
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.title = "IPv6",
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.af = AF_INET6,
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.alen = sizeof(struct in6_addr),
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.sprint = INET6_sprint,
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.input = INET6_input,
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};
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#endif /* HAVE_AFINET6 */
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/* Display an UNSPEC address. */
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static char* FAST_FUNC UNSPEC_print(unsigned char *ptr)
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{
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static char *buff;
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char *pos;
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unsigned int i;
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if (!buff)
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buff = xmalloc(sizeof(struct sockaddr) * 3 + 1);
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pos = buff;
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for (i = 0; i < sizeof(struct sockaddr); i++) {
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/* careful -- not every libc's sprintf returns # bytes written */
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sprintf(pos, "%02X-", (*ptr++ & 0377));
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pos += 3;
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}
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/* Erase trailing "-". Works as long as sizeof(struct sockaddr) != 0 */
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*--pos = '\0';
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return buff;
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}
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/* Display an UNSPEC socket address. */
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static const char* FAST_FUNC UNSPEC_sprint(struct sockaddr *sap, int numeric UNUSED_PARAM)
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{
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if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
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return "[NONE SET]";
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return UNSPEC_print((unsigned char *)sap->sa_data);
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}
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static const struct aftype unspec_aftype = {
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.name = "unspec",
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.title = "UNSPEC",
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.af = AF_UNSPEC,
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.alen = 0,
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.print = UNSPEC_print,
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.sprint = UNSPEC_sprint,
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};
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static const struct aftype *const aftypes[] = {
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&inet_aftype,
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#ifdef HAVE_AFINET6
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&inet6_aftype,
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#endif
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&unspec_aftype,
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NULL
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};
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/* Check our protocol family table for this family. */
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const struct aftype* FAST_FUNC get_aftype(const char *name)
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{
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const struct aftype *const *afp;
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afp = aftypes;
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while (*afp != NULL) {
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if (!strcmp((*afp)->name, name))
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return (*afp);
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afp++;
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}
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return NULL;
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}
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/* Check our protocol family table for this family. */
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static const struct aftype *get_afntype(int af)
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{
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const struct aftype *const *afp;
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afp = aftypes;
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while (*afp != NULL) {
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if ((*afp)->af == af)
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return *afp;
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afp++;
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}
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return NULL;
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}
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struct user_net_device_stats {
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unsigned long long rx_packets; /* total packets received */
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unsigned long long tx_packets; /* total packets transmitted */
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unsigned long long rx_bytes; /* total bytes received */
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unsigned long long tx_bytes; /* total bytes transmitted */
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unsigned long rx_errors; /* bad packets received */
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unsigned long tx_errors; /* packet transmit problems */
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unsigned long rx_dropped; /* no space in linux buffers */
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unsigned long tx_dropped; /* no space available in linux */
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unsigned long rx_multicast; /* multicast packets received */
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unsigned long rx_compressed;
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unsigned long tx_compressed;
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unsigned long collisions;
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/* detailed rx_errors: */
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unsigned long rx_length_errors;
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unsigned long rx_over_errors; /* receiver ring buff overflow */
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unsigned long rx_crc_errors; /* recved pkt with crc error */
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unsigned long rx_frame_errors; /* recv'd frame alignment error */
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unsigned long rx_fifo_errors; /* recv'r fifo overrun */
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unsigned long rx_missed_errors; /* receiver missed packet */
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/* detailed tx_errors */
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unsigned long tx_aborted_errors;
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unsigned long tx_carrier_errors;
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unsigned long tx_fifo_errors;
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unsigned long tx_heartbeat_errors;
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unsigned long tx_window_errors;
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};
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struct interface {
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struct interface *next, *prev;
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char name[IFNAMSIZ]; /* interface name */
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short type; /* if type */
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short flags; /* various flags */
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int metric; /* routing metric */
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int mtu; /* MTU value */
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int tx_queue_len; /* transmit queue length */
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struct ifmap map; /* hardware setup */
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struct sockaddr addr; /* IP address */
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struct sockaddr dstaddr; /* P-P IP address */
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struct sockaddr broadaddr; /* IP broadcast address */
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struct sockaddr netmask; /* IP network mask */
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int has_ip;
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char hwaddr[32]; /* HW address */
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int statistics_valid;
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struct user_net_device_stats stats; /* statistics */
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int keepalive; /* keepalive value for SLIP */
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int outfill; /* outfill value for SLIP */
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};
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smallint interface_opt_a; /* show all interfaces */
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static struct interface *int_list, *int_last;
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#if 0
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/* like strcmp(), but knows about numbers */
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except that the freshly added calls to xatoul() brf on ethernet aliases with
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uClibc with e.g.: ife->name='lo' name='eth0:1'
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static int nstrcmp(const char *a, const char *b)
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{
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const char *a_ptr = a;
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const char *b_ptr = b;
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while (*a == *b) {
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if (*a == '\0') {
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return 0;
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}
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if (!isdigit(*a) && isdigit(*(a+1))) {
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a_ptr = a+1;
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b_ptr = b+1;
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}
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a++;
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b++;
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}
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if (isdigit(*a) && isdigit(*b)) {
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return xatoul(a_ptr) > xatoul(b_ptr) ? 1 : -1;
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}
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return *a - *b;
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}
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#endif
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static struct interface *add_interface(char *name)
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{
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struct interface *ife, **nextp, *new;
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for (ife = int_last; ife; ife = ife->prev) {
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int n = /*n*/strcmp(ife->name, name);
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if (n == 0)
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return ife;
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if (n < 0)
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break;
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}
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new = xzalloc(sizeof(*new));
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strncpy_IFNAMSIZ(new->name, name);
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nextp = ife ? &ife->next : &int_list;
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new->prev = ife;
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new->next = *nextp;
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if (new->next)
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new->next->prev = new;
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else
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int_last = new;
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*nextp = new;
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return new;
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}
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static char *get_name(char *name, char *p)
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{
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/* Extract <name> from nul-terminated p where p matches
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* <name>: after leading whitespace.
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* If match is not made, set name empty and return unchanged p
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*/
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char *nameend;
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char *namestart = skip_whitespace(p);
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nameend = namestart;
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while (*nameend && *nameend != ':' && !isspace(*nameend))
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nameend++;
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if (*nameend == ':') {
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if ((nameend - namestart) < IFNAMSIZ) {
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memcpy(name, namestart, nameend - namestart);
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name[nameend - namestart] = '\0';
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p = nameend;
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} else {
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/* Interface name too large */
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name[0] = '\0';
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}
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} else {
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/* trailing ':' not found - return empty */
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name[0] = '\0';
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}
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return p + 1;
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}
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|
|
/* If scanf supports size qualifiers for %n conversions, then we can
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|
* use a modified fmt that simply stores the position in the fields
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|
* having no associated fields in the proc string. Of course, we need
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|
* to zero them again when we're done. But that is smaller than the
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* old approach of multiple scanf occurrences with large numbers of
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* args. */
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|
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/* static const char *const ss_fmt[] = { */
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/* "%lln%llu%lu%lu%lu%lu%ln%ln%lln%llu%lu%lu%lu%lu%lu", */
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/* "%llu%llu%lu%lu%lu%lu%ln%ln%llu%llu%lu%lu%lu%lu%lu", */
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/* "%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu" */
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/* }; */
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|
|
/* Lie about the size of the int pointed to for %n. */
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#if INT_MAX == LONG_MAX
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|
static const char *const ss_fmt[] = {
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"%n%llu%u%u%u%u%n%n%n%llu%u%u%u%u%u",
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"%llu%llu%u%u%u%u%n%n%llu%llu%u%u%u%u%u",
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"%llu%llu%u%u%u%u%u%u%llu%llu%u%u%u%u%u%u"
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|
};
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|
#else
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static const char *const ss_fmt[] = {
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"%n%llu%lu%lu%lu%lu%n%n%n%llu%lu%lu%lu%lu%lu",
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"%llu%llu%lu%lu%lu%lu%n%n%llu%llu%lu%lu%lu%lu%lu",
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"%llu%llu%lu%lu%lu%lu%lu%lu%llu%llu%lu%lu%lu%lu%lu%lu"
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|
};
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|
|
|
#endif
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|
|
|
static void get_dev_fields(char *bp, struct interface *ife, int procnetdev_vsn)
|
|
{
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|
memset(&ife->stats, 0, sizeof(struct user_net_device_stats));
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|
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|
sscanf(bp, ss_fmt[procnetdev_vsn],
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&ife->stats.rx_bytes, /* missing for 0 */
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|
&ife->stats.rx_packets,
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|
&ife->stats.rx_errors,
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&ife->stats.rx_dropped,
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|
&ife->stats.rx_fifo_errors,
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&ife->stats.rx_frame_errors,
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&ife->stats.rx_compressed, /* missing for <= 1 */
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&ife->stats.rx_multicast, /* missing for <= 1 */
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|
&ife->stats.tx_bytes, /* missing for 0 */
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|
&ife->stats.tx_packets,
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|
&ife->stats.tx_errors,
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&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
|
|
};
|
|
|
|
/* 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;
|
|
}
|
|
|
|
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("%-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));
|
|
}
|
|
|
|
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)
|
|
{
|
|
sap->sa_family = ib_hwtype.type;
|
|
//TODO: error check?
|
|
hex2bin((char*)sap->sa_data, bufp, INFINIBAND_ALEN);
|
|
# ifdef HWIB_DEBUG
|
|
fprintf(stderr, "in_ib(%s): %s\n", bufp, 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 */
|
|
}
|