if.h revision 32491
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 1.47 1997/10/12 20:25:11 phk Exp $ 35 */ 36 37#ifndef _NET_IF_H_ 38#define _NET_IF_H_ 39 40/* 41 * Structure describing information about an interface 42 * which may be of interest to management entities. 43 */ 44struct if_data { 45 /* generic interface information */ 46 u_char ifi_type; /* ethernet, tokenring, etc */ 47 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ 48 u_char ifi_addrlen; /* media address length */ 49 u_char ifi_hdrlen; /* media header length */ 50 u_char ifi_recvquota; /* polling quota for receive intrs */ 51 u_char ifi_xmitquota; /* polling quota for xmit intrs */ 52 u_long ifi_mtu; /* maximum transmission unit */ 53 u_long ifi_metric; /* routing metric (external only) */ 54 u_long ifi_baudrate; /* linespeed */ 55 /* volatile statistics */ 56 u_long ifi_ipackets; /* packets received on interface */ 57 u_long ifi_ierrors; /* input errors on interface */ 58 u_long ifi_opackets; /* packets sent on interface */ 59 u_long ifi_oerrors; /* output errors on interface */ 60 u_long ifi_collisions; /* collisions on csma interfaces */ 61 u_long ifi_ibytes; /* total number of octets received */ 62 u_long ifi_obytes; /* total number of octets sent */ 63 u_long ifi_imcasts; /* packets received via multicast */ 64 u_long ifi_omcasts; /* packets sent via multicast */ 65 u_long ifi_iqdrops; /* dropped on input, this interface */ 66 u_long ifi_noproto; /* destined for unsupported protocol */ 67 u_long ifi_recvtiming; /* usec spent receiving when timing */ 68 u_long ifi_xmittiming; /* usec spent xmitting when timing */ 69 struct timeval ifi_lastchange; /* time of last administrative change */ 70}; 71 72#define IFF_UP 0x1 /* interface is up */ 73#define IFF_BROADCAST 0x2 /* broadcast address valid */ 74#define IFF_DEBUG 0x4 /* turn on debugging */ 75#define IFF_LOOPBACK 0x8 /* is a loopback net */ 76#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 77/*#define IFF_NOTRAILERS 0x20 * obsolete: avoid use of trailers */ 78#define IFF_RUNNING 0x40 /* resources allocated */ 79#define IFF_NOARP 0x80 /* no address resolution protocol */ 80#define IFF_PROMISC 0x100 /* receive all packets */ 81#define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 82#define IFF_OACTIVE 0x400 /* transmission in progress */ 83#define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 84#define IFF_LINK0 0x1000 /* per link layer defined bit */ 85#define IFF_LINK1 0x2000 /* per link layer defined bit */ 86#define IFF_LINK2 0x4000 /* per link layer defined bit */ 87#define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ 88#define IFF_MULTICAST 0x8000 /* supports multicast */ 89 90/* flags set internally only: */ 91#define IFF_CANTCHANGE \ 92 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 93 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) 94 95#define IFQ_MAXLEN 50 96#define IFNET_SLOWHZ 1 /* granularity is 1 second */ 97 98/* 99 * Message format for use in obtaining information about interfaces 100 * from getkerninfo and the routing socket 101 */ 102struct if_msghdr { 103 u_short ifm_msglen; /* to skip over non-understood messages */ 104 u_char ifm_version; /* future binary compatability */ 105 u_char ifm_type; /* message type */ 106 int ifm_addrs; /* like rtm_addrs */ 107 int ifm_flags; /* value of if_flags */ 108 u_short ifm_index; /* index for associated ifp */ 109 struct if_data ifm_data;/* statistics and other data about if */ 110}; 111 112/* 113 * Message format for use in obtaining information about interface addresses 114 * from getkerninfo and the routing socket 115 */ 116struct ifa_msghdr { 117 u_short ifam_msglen; /* to skip over non-understood messages */ 118 u_char ifam_version; /* future binary compatability */ 119 u_char ifam_type; /* message type */ 120 int ifam_addrs; /* like rtm_addrs */ 121 int ifam_flags; /* value of ifa_flags */ 122 u_short ifam_index; /* index for associated ifp */ 123 int ifam_metric; /* value of ifa_metric */ 124}; 125 126/* 127 * Message format for use in obtaining information about multicast addresses 128 * from the routing socket 129 */ 130struct ifma_msghdr { 131 u_short ifmam_msglen; /* to skip over non-understood messages */ 132 u_char ifmam_version; /* future binary compatability */ 133 u_char ifmam_type; /* message type */ 134 int ifmam_addrs; /* like rtm_addrs */ 135 int ifmam_flags; /* value of ifa_flags */ 136 u_short ifmam_index; /* index for associated ifp */ 137}; 138 139/* 140 * Interface request structure used for socket 141 * ioctl's. All interface ioctl's must have parameter 142 * definitions which begin with ifr_name. The 143 * remainder may be interface specific. 144 */ 145struct ifreq { 146#define IFNAMSIZ 16 147 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 148 union { 149 struct sockaddr ifru_addr; 150 struct sockaddr ifru_dstaddr; 151 struct sockaddr ifru_broadaddr; 152 short ifru_flags; 153 int ifru_metric; 154 int ifru_mtu; 155 int ifru_phys; 156 int ifru_media; 157 caddr_t ifru_data; 158 } ifr_ifru; 159#define ifr_addr ifr_ifru.ifru_addr /* address */ 160#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 161#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 162#define ifr_flags ifr_ifru.ifru_flags /* flags */ 163#define ifr_metric ifr_ifru.ifru_metric /* metric */ 164#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 165#define ifr_phys ifr_ifru.ifru_phys /* physical wire */ 166#define ifr_media ifr_ifru.ifru_media /* physical media */ 167#define ifr_data ifr_ifru.ifru_data /* for use by interface */ 168}; 169 170#define _SIZEOF_ADDR_IFREQ(ifr) \ 171 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \ 172 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \ 173 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq)) 174 175struct ifaliasreq { 176 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 177 struct sockaddr ifra_addr; 178 struct sockaddr ifra_broadaddr; 179 struct sockaddr ifra_mask; 180}; 181 182struct ifmediareq { 183 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 184 int ifm_current; /* current media options */ 185 int ifm_mask; /* don't care mask */ 186 int ifm_status; /* media status */ 187 int ifm_active; /* active options */ 188 int ifm_count; /* # entries in ifm_ulist array */ 189 int *ifm_ulist; /* media words */ 190}; 191/* 192 * Structure used in SIOCGIFCONF request. 193 * Used to retrieve interface configuration 194 * for machine (useful for programs which 195 * must know all networks accessible). 196 */ 197struct ifconf { 198 int ifc_len; /* size of associated buffer */ 199 union { 200 caddr_t ifcu_buf; 201 struct ifreq *ifcu_req; 202 } ifc_ifcu; 203#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 204#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 205}; 206 207#ifdef KERNEL 208#ifdef MALLOC_DECLARE 209MALLOC_DECLARE(M_IFADDR); 210MALLOC_DECLARE(M_IFMADDR); 211#endif 212#endif 213 214/* XXX - this should go away soon */ 215#ifdef KERNEL 216#include <net/if_var.h> 217#endif 218 219#endif /* !_NET_IF_H_ */ 220