if.h revision 48021
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 1.53 1999/06/06 09:17:51 phk 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 */ 52struct 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_SMART 0x20 /* interface manages own routes */ 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|IFF_SMART) 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 */ 110struct 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 */ 124struct 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 */ 138struct 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 */ 153struct 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[2]; 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[0] /* flags */ 171#define ifr_prevflags ifr_ifru.ifru_flags[1] /* flags */ 172#define ifr_metric ifr_ifru.ifru_metric /* metric */ 173#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 174#define ifr_phys ifr_ifru.ifru_phys /* physical wire */ 175#define ifr_media ifr_ifru.ifru_media /* physical media */ 176#define ifr_data ifr_ifru.ifru_data /* for use by interface */ 177}; 178 179#define _SIZEOF_ADDR_IFREQ(ifr) \ 180 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \ 181 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \ 182 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq)) 183 184struct ifaliasreq { 185 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 186 struct sockaddr ifra_addr; 187 struct sockaddr ifra_broadaddr; 188 struct sockaddr ifra_mask; 189}; 190 191struct ifmediareq { 192 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 193 int ifm_current; /* current media options */ 194 int ifm_mask; /* don't care mask */ 195 int ifm_status; /* media status */ 196 int ifm_active; /* active options */ 197 int ifm_count; /* # entries in ifm_ulist array */ 198 int *ifm_ulist; /* media words */ 199}; 200 201/* 202 * Structure used to retrieve aux status data from interfaces. 203 * kernel suppliers to this interface should respect the formatting 204 * needed by ifconfig(8): each line starts with a TAB and ends with 205 * a newline. The canonical example to copy&past is in if_tun.c 206 */ 207 208#define IFSTATMAX 800 /* 10 lines of text */ 209struct ifstat { 210 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 211 char ascii[IFSTATMAX+1]; 212}; 213 214/* 215 * Structure used in SIOCGIFCONF request. 216 * Used to retrieve interface configuration 217 * for machine (useful for programs which 218 * must know all networks accessible). 219 */ 220struct ifconf { 221 int ifc_len; /* size of associated buffer */ 222 union { 223 caddr_t ifcu_buf; 224 struct ifreq *ifcu_req; 225 } ifc_ifcu; 226#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 227#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 228}; 229 230#ifdef KERNEL 231#ifdef MALLOC_DECLARE 232MALLOC_DECLARE(M_IFADDR); 233MALLOC_DECLARE(M_IFMADDR); 234#endif 235#endif 236 237#ifdef KERNEL 238struct proc; 239int prison_if __P((struct proc *p, struct sockaddr *sa)); 240/* XXX - this should go away soon */ 241#include <net/if_var.h> 242#endif 243 244#endif /* !_NET_IF_H_ */ 245