bsd/net/if.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1982, 1986, 1989, 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by the University of
  40  *      California, Berkeley and its contributors.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  *
  57  *      @(#)if.h        8.1 (Berkeley) 6/10/93
  58  * $FreeBSD: src/sys/net/if.h,v 1.58.2.2 2001/07/24 19:10:18 brooks Exp $
  59  */
  60
  61 #ifndef _NET_IF_H_
  62 #define _NET_IF_H_
  63 #include <sys/appleapiopts.h>
  64
  65 #ifdef __APPLE__
  66 /*
  67  * Define Data-Link event subclass, and associated
  68  * events.
  69  */
  70
  71 #define KEV_DL_SUBCLASS 2
  72
  73 #define KEV_DL_SIFFLAGS     1
  74 #define KEV_DL_SIFMETRICS   2
  75 #define KEV_DL_SIFMTU       3
  76 #define KEV_DL_SIFPHYS      4
  77 #define KEV_DL_SIFMEDIA     5
  78 #define KEV_DL_SIFGENERIC   6
  79 #define KEV_DL_ADDMULTI     7
  80 #define KEV_DL_DELMULTI     8
  81 #define KEV_DL_IF_ATTACHED  9
  82 #define KEV_DL_IF_DETACHING 10
  83 #define KEV_DL_IF_DETACHED  11
  84 #define KEV_DL_LINK_OFF     12
  85 #define KEV_DL_LINK_ON      13
  86 #define KEV_DL_PROTO_ATTACHED   14
  87 #define KEV_DL_PROTO_DETACHED   15
  88 #endif
  89
  90 /*
  91  * <net/if.h> does not depend on <sys/time.h> on most other systems.  This
  92  * helps userland compatability.  (struct timeval ifi_lastchange)
  93  */
  94 #include <sys/time.h>
  95
  96 #ifdef __APPLE__
  97 #include <net/if_var.h>
  98 #endif
  99
 100
 101 #define IFF_UP          0x1             /* interface is up */
 102 #define IFF_BROADCAST   0x2             /* broadcast address valid */
 103 #define IFF_DEBUG       0x4             /* turn on debugging */
 104 #define IFF_LOOPBACK    0x8             /* is a loopback net */
 105 #define IFF_POINTOPOINT 0x10            /* interface is point-to-point link */
 106 #define IFF_NOTRAILERS 0x20             /* obsolete: avoid use of trailers */
 107 #define IFF_RUNNING     0x40            /* resources allocated */
 108 #define IFF_NOARP       0x80            /* no address resolution protocol */
 109 #define IFF_PROMISC     0x100           /* receive all packets */
 110 #define IFF_ALLMULTI    0x200           /* receive all multicast packets */
 111 #define IFF_OACTIVE     0x400           /* transmission in progress */
 112 #define IFF_SIMPLEX     0x800           /* can't hear own transmissions */
 113 #define IFF_LINK0       0x1000          /* per link layer defined bit */
 114 #define IFF_LINK1       0x2000          /* per link layer defined bit */
 115 #define IFF_LINK2       0x4000          /* per link layer defined bit */
 116 #define IFF_ALTPHYS     IFF_LINK2       /* use alternate physical connection */
 117 #define IFF_MULTICAST   0x8000          /* supports multicast */
 118
 119 #if KERNEL_PRIVATE
 120 /* extended flags definitions:  (all bits are reserved for internal/future use) */
 121 #define IFEF_AUTOCONFIGURING    0x1
 122 #define IFEF_DVR_REENTRY_OK     0x20    /* When set, driver may be reentered from its own thread */
 123 #define IFEF_ACCEPT_RTADVD      0x40    /* set to accept IPv6 router advertisement on the interface */
 124 #define IFEF_INUSE      0x40000000 /* DLIL ifnet recycler, ifnet in use */
 125 #define IFEF_REUSE      0x20000000 /* DLIL ifnet recycler, ifnet is not new */
 126 #endif /* KERNEL_PRIVATE */
 127
 128
 129 /* flags set internally only: */
 130 #define IFF_CANTCHANGE \
 131         (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
 132             IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)
 133
 134 #define IFQ_MAXLEN      50
 135 #define IFNET_SLOWHZ    1               /* granularity is 1 second */
 136
 137 /*
 138  * Message format for use in obtaining information about interfaces
 139  * from getkerninfo and the routing socket
 140  */
 141 struct if_msghdr {
 142         u_short ifm_msglen;     /* to skip over non-understood messages */
 143         u_char  ifm_version;    /* future binary compatability */
 144         u_char  ifm_type;       /* message type */
 145         int     ifm_addrs;      /* like rtm_addrs */
 146         int     ifm_flags;      /* value of if_flags */
 147         u_short ifm_index;      /* index for associated ifp */
 148         struct  if_data ifm_data;/* statistics and other data about if */
 149 };
 150
 151 /*
 152  * Message format for use in obtaining information about interface addresses
 153  * from getkerninfo and the routing socket
 154  */
 155 struct ifa_msghdr {
 156         u_short ifam_msglen;    /* to skip over non-understood messages */
 157         u_char  ifam_version;   /* future binary compatability */
 158         u_char  ifam_type;      /* message type */
 159         int     ifam_addrs;     /* like rtm_addrs */
 160         int     ifam_flags;     /* value of ifa_flags */
 161         u_short ifam_index;     /* index for associated ifp */
 162         int     ifam_metric;    /* value of ifa_metric */
 163 };
 164
 165 /*
 166  * Message format for use in obtaining information about multicast addresses
 167  * from the routing socket
 168  */
 169 struct ifma_msghdr {
 170         u_short ifmam_msglen;   /* to skip over non-understood messages */
 171         u_char  ifmam_version;  /* future binary compatability */
 172         u_char  ifmam_type;     /* message type */
 173         int     ifmam_addrs;    /* like rtm_addrs */
 174         int     ifmam_flags;    /* value of ifa_flags */
 175         u_short ifmam_index;    /* index for associated ifp */
 176 };
 177
 178 /*
 179  * Interface request structure used for socket
 180  * ioctl's.  All interface ioctl's must have parameter
 181  * definitions which begin with ifr_name.  The
 182  * remainder may be interface specific.
 183  */
 184 #define IF_NAMESIZE     IFNAMSIZ
 185 struct  ifreq {
 186 #define IFNAMSIZ        16
 187         char    ifr_name[IFNAMSIZ];             /* if name, e.g. "en0" */
 188         union {
 189                 struct  sockaddr ifru_addr;
 190                 struct  sockaddr ifru_dstaddr;
 191                 struct  sockaddr ifru_broadaddr;
 192                 short   ifru_flags;
 193                 int     ifru_metric;
 194                 int     ifru_mtu;
 195                 int     ifru_phys;
 196                 int     ifru_media;
 197                 caddr_t ifru_data;
 198         } ifr_ifru;
 199 #define ifr_addr        ifr_ifru.ifru_addr      /* address */
 200 #define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-to-p link */
 201 #define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address */
 202 #ifdef __APPLE__
 203 #define ifr_flags       ifr_ifru.ifru_flags     /* flags */
 204 #else
 205 #define ifr_flags       ifr_ifru.ifru_flags[0]  /* flags */
 206 #define ifr_prevflags   ifr_ifru.ifru_flags[1]  /* flags */
 207 #endif /* __APPLE__ */
 208 #define ifr_metric      ifr_ifru.ifru_metric    /* metric */
 209 #define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu */
 210 #define ifr_phys        ifr_ifru.ifru_phys      /* physical wire */
 211 #define ifr_media       ifr_ifru.ifru_media     /* physical media */
 212 #define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 213 };
 214
 215 #define _SIZEOF_ADDR_IFREQ(ifr) \
 216         ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
 217          (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
 218           (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
 219
 220 struct ifaliasreq {
 221         char    ifra_name[IFNAMSIZ];            /* if name, e.g. "en0" */
 222         struct  sockaddr ifra_addr;
 223         struct  sockaddr ifra_broadaddr;
 224         struct  sockaddr ifra_mask;
 225 };
 226
 227 struct rslvmulti_req {
 228      struct sockaddr *sa;
 229      struct sockaddr **llsa;
 230 };
 231
 232 struct ifmediareq {
 233         char    ifm_name[IFNAMSIZ];     /* if name, e.g. "en0" */
 234         int     ifm_current;            /* current media options */
 235         int     ifm_mask;               /* don't care mask */
 236         int     ifm_status;             /* media status */
 237         int     ifm_active;             /* active options */
 238         int     ifm_count;              /* # entries in ifm_ulist array */
 239         int     *ifm_ulist;             /* media words */
 240 };
 241
 242 /*
 243  * Structure used to retrieve aux status data from interfaces.
 244  * Kernel suppliers to this interface should respect the formatting
 245  * needed by ifconfig(8): each line starts with a TAB and ends with
 246  * a newline.  The canonical example to copy and paste is in if_tun.c.
 247  */
 248
 249 #define IFSTATMAX       800             /* 10 lines of text */
 250 struct ifstat {
 251         char    ifs_name[IFNAMSIZ];     /* if name, e.g. "en0" */
 252         char    ascii[IFSTATMAX + 1];
 253 };
 254
 255 /*
 256  * Structure used in SIOCGIFCONF request.
 257  * Used to retrieve interface configuration
 258  * for machine (useful for programs which
 259  * must know all networks accessible).
 260  */
 261 struct  ifconf {
 262         int     ifc_len;                /* size of associated buffer */
 263         union {
 264                 caddr_t ifcu_buf;
 265                 struct  ifreq *ifcu_req;
 266         } ifc_ifcu;
 267 #define ifc_buf ifc_ifcu.ifcu_buf       /* buffer address */
 268 #define ifc_req ifc_ifcu.ifcu_req       /* array of structures returned */
 269 };
 270
 271 #ifdef __APPLE__
 272 #ifdef __APPLE_API_UNSTABLE
 273 /*
 274  * DLIL KEV_DL_PROTO_ATTACHED/DETACHED structure
 275  */
 276 struct kev_dl_proto_data {
 277      struct net_event_data      link_data;
 278      u_long                     proto_family;
 279      u_long                     proto_remaining_count;
 280 };
 281 #endif /* __APPLE_API_UNSTABLE */
 282 #endif
 283
 284
 285 /*
 286  * Structure for SIOC[AGD]LIFADDR
 287  */
 288 struct if_laddrreq {
 289         char    iflr_name[IFNAMSIZ];
 290         u_int   flags;
 291 #define IFLR_PREFIX     0x8000  /* in: prefix given  out: kernel fills id */
 292         u_int   prefixlen;         /* in/out */
 293         struct  sockaddr_storage addr;   /* in/out */
 294         struct  sockaddr_storage dstaddr; /* out */
 295 };
 296
 297 #ifdef KERNEL
 298 #ifdef MALLOC_DECLARE
 299 MALLOC_DECLARE(M_IFADDR);
 300 MALLOC_DECLARE(M_IFMADDR);
 301 #endif
 302 #endif
 303
 304 #ifndef KERNEL
 305 struct if_nameindex {
 306         u_int   if_index;       /* 1, 2, ... */
 307         char    *if_name;       /* null terminated name: "le0", ... */
 308 };
 309
 310 __BEGIN_DECLS
 311 u_int    if_nametoindex __P((const char *));
 312 char    *if_indextoname __P((u_int, char *));
 313 struct   if_nameindex *if_nameindex __P((void));
 314 void     if_freenameindex __P((struct if_nameindex *));
 315 __END_DECLS
 316 #endif
 317
 318 #ifdef KERNEL
 319 #ifndef __APPLE__
 320 struct proc;
 321
 322 int     prison_if __P((struct proc *p, struct sockaddr *sa));
 323 #endif
 324
 325 #endif
 326
 327 #endif /* !_NET_IF_H_ */