StdLib/Include/net/if.h

   1 /*
   2  * Copyright (c) 1982, 1986, 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)if.h        8.1 (Berkeley) 6/10/93
  34  *      $Id: if.h,v 1.1.1.1 2006/05/30 06:12:41 hhzhou Exp $
  35  */
  36
  37 #ifndef _NET_IF_H_
  38 #define _NET_IF_H_
  39
  40 /*
  41  * <net/if.h> does not depend on <sys/time.h> on most other systems.  This
  42  * helps userland compatability.  (struct timeval ifi_lastchange)
  43  */
  44 #ifndef KERNEL
  45 #include <sys/time.h>
  46 #endif
  47
  48 /*
  49  * Structure describing information about an interface
  50  * which may be of interest to management entities.
  51  */
  52 struct if_data {
  53         /* generic interface information */
  54         u_char  ifi_type;               /* ethernet, tokenring, etc */
  55         u_char  ifi_physical;           /* e.g., AUI, Thinnet, 10base-T, etc */
  56         u_char  ifi_addrlen;            /* media address length */
  57         u_char  ifi_hdrlen;             /* media header length */
  58         u_char  ifi_recvquota;          /* polling quota for receive intrs */
  59         u_char  ifi_xmitquota;          /* polling quota for xmit intrs */
  60         u_long  ifi_mtu;                /* maximum transmission unit */
  61         u_long  ifi_metric;             /* routing metric (external only) */
  62         u_long  ifi_baudrate;           /* linespeed */
  63         /* volatile statistics */
  64         u_long  ifi_ipackets;           /* packets received on interface */
  65         u_long  ifi_ierrors;            /* input errors on interface */
  66         u_long  ifi_opackets;           /* packets sent on interface */
  67         u_long  ifi_oerrors;            /* output errors on interface */
  68         u_long  ifi_collisions;         /* collisions on csma interfaces */
  69         u_long  ifi_ibytes;             /* total number of octets received */
  70         u_long  ifi_obytes;             /* total number of octets sent */
  71         u_long  ifi_imcasts;            /* packets received via multicast */
  72         u_long  ifi_omcasts;            /* packets sent via multicast */
  73         u_long  ifi_iqdrops;            /* dropped on input, this interface */
  74         u_long  ifi_noproto;            /* destined for unsupported protocol */
  75         u_long  ifi_recvtiming;         /* usec spent receiving when timing */
  76         u_long  ifi_xmittiming;         /* usec spent xmitting when timing */
  77         struct  timeval ifi_lastchange; /* time of last administrative change */
  78 };
  79
  80 #define IFF_UP          0x1             /* interface is up */
  81 #define IFF_BROADCAST   0x2             /* broadcast address valid */
  82 #define IFF_DEBUG       0x4             /* turn on debugging */
  83 #define IFF_LOOPBACK    0x8             /* is a loopback net */
  84 #define IFF_POINTOPOINT 0x10            /* interface is point-to-point link */
  85 /*#define IFF_NOTRAILERS 0x20            * obsolete: avoid use of trailers */
  86 #define IFF_RUNNING     0x40            /* resources allocated */
  87 #define IFF_NOARP       0x80            /* no address resolution protocol */
  88 #define IFF_PROMISC     0x100           /* receive all packets */
  89 #define IFF_ALLMULTI    0x200           /* receive all multicast packets */
  90 #define IFF_OACTIVE     0x400           /* transmission in progress */
  91 #define IFF_SIMPLEX     0x800           /* can't hear own transmissions */
  92 #define IFF_LINK0       0x1000          /* per link layer defined bit */
  93 #define IFF_LINK1       0x2000          /* per link layer defined bit */
  94 #define IFF_LINK2       0x4000          /* per link layer defined bit */
  95 #define IFF_ALTPHYS     IFF_LINK2       /* use alternate physical connection */
  96 #define IFF_MULTICAST   0x8000          /* supports multicast */
  97
  98 /* flags set internally only: */
  99 #define IFF_CANTCHANGE \
 100         (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
 101             IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)
 102
 103 #define IFQ_MAXLEN      50
 104 #define IFNET_SLOWHZ    1               /* granularity is 1 second */
 105
 106 /*
 107  * Message format for use in obtaining information about interfaces
 108  * from getkerninfo and the routing socket
 109  */
 110 struct if_msghdr {
 111         u_short ifm_msglen;     /* to skip over non-understood messages */
 112         u_char  ifm_version;    /* future binary compatability */
 113         u_char  ifm_type;       /* message type */
 114         int     ifm_addrs;      /* like rtm_addrs */
 115         int     ifm_flags;      /* value of if_flags */
 116         u_short ifm_index;      /* index for associated ifp */
 117         struct  if_data ifm_data;/* statistics and other data about if */
 118 };
 119
 120 /*
 121  * Message format for use in obtaining information about interface addresses
 122  * from getkerninfo and the routing socket
 123  */
 124 struct ifa_msghdr {
 125         u_short ifam_msglen;    /* to skip over non-understood messages */
 126         u_char  ifam_version;   /* future binary compatability */
 127         u_char  ifam_type;      /* message type */
 128         int     ifam_addrs;     /* like rtm_addrs */
 129         int     ifam_flags;     /* value of ifa_flags */
 130         u_short ifam_index;     /* index for associated ifp */
 131         int     ifam_metric;    /* value of ifa_metric */
 132 };
 133
 134 /*
 135  * Message format for use in obtaining information about multicast addresses
 136  * from the routing socket
 137  */
 138 struct ifma_msghdr {
 139         u_short ifmam_msglen;   /* to skip over non-understood messages */
 140         u_char  ifmam_version;  /* future binary compatability */
 141         u_char  ifmam_type;     /* message type */
 142         int     ifmam_addrs;    /* like rtm_addrs */
 143         int     ifmam_flags;    /* value of ifa_flags */
 144         u_short ifmam_index;    /* index for associated ifp */
 145 };
 146
 147 /*
 148  * Interface request structure used for socket
 149  * ioctl's.  All interface ioctl's must have parameter
 150  * definitions which begin with ifr_name.  The
 151  * remainder may be interface specific.
 152  */
 153 struct  ifreq {
 154 #define IFNAMSIZ        16
 155         char    ifr_name[IFNAMSIZ];             /* if name, e.g. "en0" */
 156         union {
 157                 struct  sockaddr ifru_addr;
 158                 struct  sockaddr ifru_dstaddr;
 159                 struct  sockaddr ifru_broadaddr;
 160                 short   ifru_flags;
 161                 int     ifru_metric;
 162                 int     ifru_mtu;
 163                 int     ifru_phys;
 164                 int     ifru_media;
 165                 caddr_t ifru_data;
 166         } ifr_ifru;
 167 #define ifr_addr        ifr_ifru.ifru_addr      /* address */
 168 #define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-to-p link */
 169 #define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address */
 170 #define ifr_flags       ifr_ifru.ifru_flags     /* flags */
 171 #define ifr_metric      ifr_ifru.ifru_metric    /* metric */
 172 #define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu */
 173 #define ifr_phys        ifr_ifru.ifru_phys      /* physical wire */
 174 #define ifr_media       ifr_ifru.ifru_media     /* physical media */
 175 #define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 176 };
 177
 178 #define _SIZEOF_ADDR_IFREQ(ifr) \
 179         ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
 180          (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
 181           (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
 182
 183 struct ifaliasreq {
 184         char    ifra_name[IFNAMSIZ];            /* if name, e.g. "en0" */
 185         struct  sockaddr ifra_addr;
 186         struct  sockaddr ifra_broadaddr;
 187         struct  sockaddr ifra_mask;
 188 };
 189
 190 struct ifmediareq {
 191         char    ifm_name[IFNAMSIZ];     /* if name, e.g. "en0" */
 192         int     ifm_current;            /* current media options */
 193         int     ifm_mask;               /* don't care mask */
 194         int     ifm_status;             /* media status */
 195         int     ifm_active;             /* active options */
 196         int     ifm_count;              /* # entries in ifm_ulist array */
 197         int     *ifm_ulist;             /* media words */
 198 };
 199 /*
 200  * Structure used in SIOCGIFCONF request.
 201  * Used to retrieve interface configuration
 202  * for machine (useful for programs which
 203  * must know all networks accessible).
 204  */
 205 struct  ifconf {
 206         int     ifc_len;                /* size of associated buffer */
 207         union {
 208                 caddr_t ifcu_buf;
 209                 struct  ifreq *ifcu_req;
 210         } ifc_ifcu;
 211 #define ifc_buf ifc_ifcu.ifcu_buf       /* buffer address */
 212 #define ifc_req ifc_ifcu.ifcu_req       /* array of structures returned */
 213 };
 214
 215 #ifdef KERNEL
 216 #ifdef MALLOC_DECLARE
 217 MALLOC_DECLARE(M_IFADDR);
 218 MALLOC_DECLARE(M_IFMADDR);
 219 #endif
 220 #endif
 221
 222 /* XXX - this should go away soon */
 223 #ifdef KERNEL
 224 #include <net/if_var.h>
 225 #endif
 226
 227 #endif /* !_NET_IF_H_ */