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 * $FreeBSD: src/sys/net/if.h,v 1.58.2.9 2002/08/30 14:23:38 sobomax Exp $ 35 * $DragonFly: src/sys/net/if.h,v 1.17 2006/12/19 00:11:12 dillon Exp $ 36 */ 37 38 #ifndef _NET_IF_H_ 39 #define _NET_IF_H_ 40 41 #ifndef _SYS_TYPES_H_ 42 #include <sys/types.h> 43 #endif 44 #ifndef _SYS_TIME_H_ 45 #include <sys/time.h> 46 #endif 47 #ifndef _SYS_SOCKET_H_ 48 #include <sys/socket.h> 49 #endif 50 51 #ifdef _KERNEL 52 53 #ifndef _SYS_QUEUE_H_ 54 #include <sys/queue.h> 55 #endif 56 57 #endif 58 59 struct ifnet; 60 61 /* 62 * Length of interface external name, including terminating '\0'. 63 * Note: this is the same size as a generic device's external name. 64 */ 65 #define IFNAMSIZ 16 66 #define IF_NAMESIZE IFNAMSIZ 67 #define IF_MAXUNIT 0x7fff /* if_unit is 15bits */ 68 69 #ifdef _KERNEL 70 /* 71 * Structure describing a `cloning' interface. 72 */ 73 struct if_clone { 74 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 75 const char *ifc_name; /* name of device, e.g. `gif' */ 76 size_t ifc_namelen; /* length of name */ 77 int ifc_minifs; /* minimum number of interfaces */ 78 int ifc_maxunit; /* maximum unit number */ 79 unsigned char *ifc_units; /* bitmap to handle units */ 80 int ifc_bmlen; /* bitmap length */ 81 82 int (*ifc_create)(struct if_clone *, int); 83 void (*ifc_destroy)(struct ifnet *); 84 }; 85 86 #define IF_CLONE_INITIALIZER(name, create, destroy, minifs, maxunit) \ 87 { { 0 }, name, sizeof(name) - 1, minifs, maxunit, NULL, 0, create, destroy } 88 #endif 89 90 /* 91 * Structure used to query names of interface cloners. 92 */ 93 94 struct if_clonereq { 95 int ifcr_total; /* total cloners (out) */ 96 int ifcr_count; /* room for this many in user buffer */ 97 char *ifcr_buffer; /* buffer for cloner names */ 98 }; 99 100 /* 101 * Structure describing information about an interface 102 * which may be of interest to management entities. 103 */ 104 struct if_data { 105 /* generic interface information */ 106 u_char ifi_type; /* ethernet, tokenring, etc */ 107 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ 108 u_char ifi_addrlen; /* media address length */ 109 u_char ifi_hdrlen; /* media header length */ 110 u_char ifi_recvquota; /* polling quota for receive intrs */ 111 u_char ifi_xmitquota; /* polling quota for xmit intrs */ 112 u_long ifi_mtu; /* maximum transmission unit */ 113 u_long ifi_metric; /* routing metric (external only) */ 114 u_long ifi_baudrate; /* linespeed */ 115 /* volatile statistics */ 116 u_long ifi_ipackets; /* packets received on interface */ 117 u_long ifi_ierrors; /* input errors on interface */ 118 u_long ifi_opackets; /* packets sent on interface */ 119 u_long ifi_oerrors; /* output errors on interface */ 120 u_long ifi_collisions; /* collisions on csma interfaces */ 121 u_long ifi_ibytes; /* total number of octets received */ 122 u_long ifi_obytes; /* total number of octets sent */ 123 u_long ifi_imcasts; /* packets received via multicast */ 124 u_long ifi_omcasts; /* packets sent via multicast */ 125 u_long ifi_iqdrops; /* dropped on input, this interface */ 126 u_long ifi_noproto; /* destined for unsupported protocol */ 127 u_long ifi_hwassist; /* HW offload capabilities */ 128 u_long ifi_unused; /* XXX was ifi_xmittiming */ 129 struct timeval ifi_lastchange; /* time of last administrative change */ 130 }; 131 132 #define IFF_UP 0x1 /* interface is up */ 133 #define IFF_BROADCAST 0x2 /* broadcast address valid */ 134 #define IFF_DEBUG 0x4 /* turn on debugging */ 135 #define IFF_LOOPBACK 0x8 /* is a loopback net */ 136 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 137 #define IFF_SMART 0x20 /* interface manages own routes */ 138 #define IFF_RUNNING 0x40 /* resources allocated */ 139 #define IFF_NOARP 0x80 /* no address resolution protocol */ 140 #define IFF_PROMISC 0x100 /* receive all packets */ 141 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 142 #define IFF_OACTIVE 0x400 /* transmission in progress */ 143 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 144 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 145 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 146 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 147 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ 148 #define IFF_MULTICAST 0x8000 /* supports multicast */ 149 #define IFF_POLLING 0x10000 /* Interface is in polling mode. */ 150 #define IFF_PPROMISC 0x20000 /* user-requested promisc mode */ 151 #define IFF_MONITOR 0x40000 /* user-requested monitor mode */ 152 153 /* flags set internally only: */ 154 #define IFF_CANTCHANGE \ 155 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 156 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_POLLING) 157 158 /* 159 * Some convenience macros used for setting ifi_baudrate. 160 * XXX 1000 vs. 1024? --thorpej@netbsd.org 161 */ 162 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 163 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 164 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 165 166 /* Capabilities that interfaces can advertise. */ 167 #define IFCAP_RXCSUM 0x0001 /* can offload checksum on RX */ 168 #define IFCAP_TXCSUM 0x0002 /* can offload checksum on TX */ 169 #define IFCAP_NETCONS 0x0004 /* can be a network console */ 170 #define IFCAP_VLAN_MTU 0x0008 /* VLAN-compatible MTU */ 171 #define IFCAP_VLAN_HWTAGGING 0x0010 /* hardware VLAN tag support */ 172 #define IFCAP_JUMBO_MTU 0x0020 /* 9000 byte MTU support */ 173 174 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM) 175 176 #define IFQ_MAXLEN 50 177 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 178 179 /* 180 * Message format for use in obtaining information about interfaces 181 * from getkerninfo and the routing socket 182 */ 183 struct if_msghdr { 184 u_short ifm_msglen; /* to skip over non-understood messages */ 185 u_char ifm_version; /* future binary compatibility */ 186 u_char ifm_type; /* message type */ 187 int ifm_addrs; /* like rtm_addrs */ 188 int ifm_flags; /* value of if_flags */ 189 u_short ifm_index; /* index for associated ifp */ 190 struct if_data ifm_data;/* statistics and other data about if */ 191 }; 192 193 /* 194 * Message format for use in obtaining information about interface addresses 195 * from getkerninfo and the routing socket 196 */ 197 struct ifa_msghdr { 198 u_short ifam_msglen; /* to skip over non-understood messages */ 199 u_char ifam_version; /* future binary compatibility */ 200 u_char ifam_type; /* message type */ 201 int ifam_addrs; /* like rtm_addrs */ 202 int ifam_flags; /* value of ifa_flags */ 203 u_short ifam_index; /* index for associated ifp */ 204 int ifam_metric; /* value of ifa_metric */ 205 }; 206 207 /* 208 * Message format for use in obtaining information about multicast addresses 209 * from the routing socket 210 */ 211 struct ifma_msghdr { 212 u_short ifmam_msglen; /* to skip over non-understood messages */ 213 u_char ifmam_version; /* future binary compatibility */ 214 u_char ifmam_type; /* message type */ 215 int ifmam_addrs; /* like rtm_addrs */ 216 int ifmam_flags; /* value of ifa_flags */ 217 u_short ifmam_index; /* index for associated ifp */ 218 }; 219 220 /* 221 * Message format announcing the arrival or departure of a network interface. 222 */ 223 struct if_announcemsghdr { 224 u_short ifan_msglen; /* to skip over non-understood messages */ 225 u_char ifan_version; /* future binary compatibility */ 226 u_char ifan_type; /* message type */ 227 u_short ifan_index; /* index for associated ifp */ 228 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 229 u_short ifan_what; /* what type of announcement */ 230 }; 231 232 #define IFAN_ARRIVAL 0 /* interface arrival */ 233 #define IFAN_DEPARTURE 1 /* interface departure */ 234 235 /* 236 * Interface request structure used for socket 237 * ioctl's. All interface ioctl's must have parameter 238 * definitions which begin with ifr_name. The 239 * remainder may be interface specific. 240 */ 241 struct ifreq { 242 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 243 union { 244 struct sockaddr ifru_addr; 245 struct sockaddr ifru_dstaddr; 246 struct sockaddr ifru_broadaddr; 247 short ifru_flags[2]; 248 int ifru_metric; 249 int ifru_mtu; 250 int ifru_phys; 251 int ifru_media; 252 void *ifru_data; 253 int ifru_cap[2]; 254 } ifr_ifru; 255 #define ifr_addr ifr_ifru.ifru_addr /* address */ 256 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 257 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 258 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */ 259 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */ 260 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 261 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 262 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */ 263 #define ifr_media ifr_ifru.ifru_media /* physical media */ 264 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 265 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */ 266 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */ 267 }; 268 269 #define _SIZEOF_ADDR_IFREQ(ifr) \ 270 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \ 271 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \ 272 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq)) 273 274 struct ifaliasreq { 275 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 276 struct sockaddr ifra_addr; 277 struct sockaddr ifra_broadaddr; 278 struct sockaddr ifra_mask; 279 }; 280 281 struct ifmediareq { 282 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 283 int ifm_current; /* current media options */ 284 int ifm_mask; /* don't care mask */ 285 int ifm_status; /* media status */ 286 int ifm_active; /* active options */ 287 int ifm_count; /* # entries in ifm_ulist array */ 288 int *ifm_ulist; /* media words */ 289 }; 290 291 struct ifdrv { 292 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 293 unsigned long ifd_cmd; 294 size_t ifd_len; 295 void *ifd_data; 296 }; 297 298 /* 299 * Structure used to retrieve aux status data from interfaces. 300 * Kernel suppliers to this interface should respect the formatting 301 * needed by ifconfig(8): each line starts with a TAB and ends with 302 * a newline. The canonical example to copy and paste is in if_tun.c. 303 */ 304 305 #define IFSTATMAX 800 /* 10 lines of text */ 306 struct ifstat { 307 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 308 char ascii[IFSTATMAX + 1]; 309 }; 310 311 /* 312 * Structure used in SIOCGIFCONF request. 313 * Used to retrieve interface configuration 314 * for machine (useful for programs which 315 * must know all networks accessible). 316 */ 317 struct ifconf { 318 int ifc_len; /* size of associated buffer */ 319 union { 320 caddr_t ifcu_buf; 321 struct ifreq *ifcu_req; 322 } ifc_ifcu; 323 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 324 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 325 }; 326 327 328 /* 329 * Structure for SIOC[AGD]LIFADDR 330 */ 331 struct if_laddrreq { 332 char iflr_name[IFNAMSIZ]; 333 u_int flags; 334 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 335 u_int prefixlen; /* in/out */ 336 struct sockaddr_storage addr; /* in/out */ 337 struct sockaddr_storage dstaddr; /* out */ 338 }; 339 340 #ifndef _KERNEL 341 struct if_nameindex { 342 u_int if_index; /* 1, 2, ... */ 343 const char *if_name; /* null terminated name: "le0", ... */ 344 }; 345 346 __BEGIN_DECLS 347 u_int if_nametoindex (const char *); 348 char *if_indextoname(u_int, char *); 349 struct if_nameindex *if_nameindex (void); 350 void if_freenameindex (struct if_nameindex *); 351 __END_DECLS 352 #endif 353 354 #ifdef _KERNEL 355 struct thread; 356 struct ucred; 357 358 int prison_if (struct ucred *cred, struct sockaddr *sa); 359 360 /* XXX - this should go away soon. */ 361 #include <net/if_var.h> 362 #endif 363 364 #endif /* !_NET_IF_H_ */ 365