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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)if.h 8.1 (Berkeley) 6/10/93 30 * $FreeBSD: src/sys/net/if.h,v 1.58.2.9 2002/08/30 14:23:38 sobomax Exp $ 31 */ 32 33 #ifndef _NET_IF_H_ 34 #define _NET_IF_H_ 35 36 #include <sys/cdefs.h> 37 38 #if __BSD_VISIBLE 39 /* 40 * <net/if.h> does not depend on <sys/time.h> on most other systems. This 41 * helps userland compatibility. (struct timeval ifi_lastchange) 42 */ 43 #include <sys/socket.h> 44 #ifndef _KERNEL 45 #include <sys/time.h> 46 #endif /* !_KERNEL */ 47 #include <sys/types.h> 48 #endif /* __BSD_VISIBLE */ 49 50 /* 51 * Length of interface external name, including terminating '\0'. 52 * Note: this is the same size as a generic device's external name. 53 */ 54 #define IF_NAMESIZE 16 55 #if __BSD_VISIBLE 56 #define IFNAMSIZ IF_NAMESIZE 57 #define IF_MAXUNIT 0x7fff /* if_unit is 15bits */ 58 59 /* 60 * Structure describing information about an interface 61 * which may be of interest to management entities. 62 */ 63 struct if_data { 64 /* generic interface information */ 65 u_char ifi_type; /* ethernet, tokenring, etc */ 66 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ 67 u_char ifi_addrlen; /* media address length */ 68 u_char ifi_hdrlen; /* media header length */ 69 u_char ifi_recvquota; /* polling quota for receive intrs */ 70 u_char ifi_xmitquota; /* polling quota for xmit intrs */ 71 u_long ifi_mtu; /* maximum transmission unit */ 72 u_long ifi_metric; /* routing metric (external only) */ 73 u_long ifi_link_state; /* current link state */ 74 uint64_t ifi_baudrate; /* linespeed */ 75 /* volatile statistics */ 76 u_long ifi_ipackets; /* packets received on interface */ 77 u_long ifi_ierrors; /* input errors on interface */ 78 u_long ifi_opackets; /* packets sent on interface */ 79 u_long ifi_oerrors; /* output errors on interface */ 80 u_long ifi_collisions; /* collisions on csma interfaces */ 81 u_long ifi_ibytes; /* total number of octets received */ 82 u_long ifi_obytes; /* total number of octets sent */ 83 u_long ifi_imcasts; /* packets received via multicast */ 84 u_long ifi_omcasts; /* packets sent via multicast */ 85 u_long ifi_iqdrops; /* dropped on input, this interface */ 86 u_long ifi_noproto; /* destined for unsupported protocol */ 87 u_long ifi_hwassist; /* HW offload capabilities */ 88 u_long ifi_oqdrops; /* dropped on input, this interface */ 89 struct timeval ifi_lastchange; /* time of last administrative change */ 90 }; 91 92 #define IFF_UP 0x1 /* interface is up */ 93 #define IFF_BROADCAST 0x2 /* broadcast address valid */ 94 #define IFF_DEBUG 0x4 /* turn on debugging */ 95 #define IFF_LOOPBACK 0x8 /* is a loopback net */ 96 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 97 #define IFF_SMART 0x20 /* interface manages own routes */ 98 #define IFF_RUNNING 0x40 /* resources allocated */ 99 #define IFF_NOARP 0x80 /* no address resolution protocol */ 100 #define IFF_PROMISC 0x100 /* receive all packets */ 101 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 102 #define IFF_OACTIVE_COMPAT 0x400 /* was transmission in progress */ 103 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 104 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 105 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 106 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 107 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ 108 #define IFF_MULTICAST 0x8000 /* supports multicast */ 109 #define IFF_POLLING_COMPAT 0x10000 /* was interface is in polling mode */ 110 #define IFF_PPROMISC 0x20000 /* user-requested promisc mode */ 111 #define IFF_MONITOR 0x40000 /* user-requested monitor mode */ 112 #define IFF_STATICARP 0x80000 /* static ARP */ 113 #define IFF_NPOLLING 0x100000 /* interface is in polling mode */ 114 #define IFF_IDIRECT 0x200000 /* direct input */ 115 #define IFF_ISBRIDGE 0x400000 /* this is actually a bridge(4) */ 116 117 /* flags set internally only: */ 118 #define IFF_CANTCHANGE \ 119 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE_COMPAT|\ 120 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_POLLING_COMPAT|\ 121 IFF_NPOLLING|IFF_IDIRECT|IFF_ISBRIDGE) 122 123 #ifndef _KERNEL 124 /* 125 * User space compat 126 */ 127 #define IFF_OACTIVE IFF_OACTIVE_COMPAT 128 #define IFF_POLLING IFF_POLLING_COMPAT 129 #endif 130 131 /* 132 * Values for if_link_state. 133 */ 134 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 135 #define LINK_STATE_DOWN 1 /* link is down */ 136 #define LINK_STATE_UP 2 /* link is up */ 137 #define LINK_STATE_IS_UP(_s) ((_s) >= LINK_STATE_UP) 138 139 /* 140 * Some convenience macros used for setting ifi_baudrate. 141 * XXX 1000 vs. 1024? --thorpej@netbsd.org 142 */ 143 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 144 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 145 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 146 147 /* Capabilities that interfaces can advertise. */ 148 #define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */ 149 #define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */ 150 #define IFCAP_NETCONS 0x00004 /* can be a network console */ 151 #define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */ 152 #define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */ 153 #define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU support */ 154 #define IFCAP_RSS 0x00040 /* Receive Side Scaling for IPv4 */ 155 #define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */ 156 #define IFCAP_TSO4 0x00100 /* can offload TCP segmentation */ 157 #define IFCAP_TSO IFCAP_TSO4 158 #define IFCAP_TSO6 0x00200 /* can offload TCP6 segmentation */ 159 160 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM) 161 162 163 #define IFQ_MAXLEN 250 164 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 165 166 /* 167 * Message format for use in obtaining information about interfaces 168 * from getkerninfo and the routing socket 169 */ 170 struct if_msghdr { 171 u_short ifm_msglen; /* to skip over non-understood messages */ 172 u_char ifm_version; /* future binary compatibility */ 173 u_char ifm_type; /* message type */ 174 u_short ifm_index; /* index for associated ifp */ 175 int ifm_flags; /* value of if_flags */ 176 int ifm_addrs; /* like rtm_addrs */ 177 struct if_data ifm_data;/* statistics and other data about if */ 178 }; 179 180 /* 181 * Message format for use in obtaining information about interface addresses 182 * from getkerninfo and the routing socket 183 */ 184 struct ifa_msghdr { 185 u_short ifam_msglen; /* to skip over non-understood messages */ 186 u_char ifam_version; /* future binary compatibility */ 187 u_char ifam_type; /* message type */ 188 u_short ifam_index; /* index for associated ifp */ 189 int ifam_flags; /* value of ifa_flags */ 190 int ifam_addrs; /* like rtm_addrs */ 191 int ifam_addrflags; /* family specific address flags */ 192 int ifam_metric; /* value of ifa_metric */ 193 }; 194 195 /* 196 * Message format for use in obtaining information about multicast addresses 197 * from the routing socket 198 */ 199 struct ifma_msghdr { 200 u_short ifmam_msglen; /* to skip over non-understood messages */ 201 u_char ifmam_version; /* future binary compatibility */ 202 u_char ifmam_type; /* message type */ 203 u_short ifmam_index; /* index for associated ifp */ 204 int ifmam_flags; /* value of ifa_flags */ 205 int ifmam_addrs; /* like rtm_addrs */ 206 }; 207 208 /* 209 * Message format announcing the arrival or departure of a network interface. 210 */ 211 struct if_announcemsghdr { 212 u_short ifan_msglen; /* to skip over non-understood messages */ 213 u_char ifan_version; /* future binary compatibility */ 214 u_char ifan_type; /* message type */ 215 u_short ifan_index; /* index for associated ifp */ 216 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 217 u_short ifan_what; /* what type of announcement */ 218 }; 219 220 #define IFAN_ARRIVAL 0 /* interface arrival */ 221 #define IFAN_DEPARTURE 1 /* interface departure */ 222 223 /* 224 * Buffer with length to be used in SIOCGIFDESCR/SIOCSIFDESCR requests 225 */ 226 struct ifreq_buffer { 227 size_t length; 228 void *buffer; 229 }; 230 231 /* 232 * Interface request structure used for socket 233 * ioctl's. All interface ioctl's must have parameter 234 * definitions which begin with ifr_name. The 235 * remainder may be interface specific. 236 */ 237 struct ifreq { 238 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 239 union { 240 struct sockaddr ifru_addr; 241 struct sockaddr ifru_dstaddr; 242 struct sockaddr ifru_broadaddr; 243 struct ifreq_buffer ifru_buffer; 244 short ifru_flags[2]; 245 short ifru_index; 246 int ifru_metric; 247 int ifru_mtu; 248 int ifru_phys; 249 int ifru_media; 250 void *ifru_data; 251 int ifru_cap[2]; 252 int ifru_pollcpu; 253 int ifru_tsolen; 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_buffer ifr_ifru.ifru_buffer /* user supplied buffer with its length */ 259 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */ 260 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */ 261 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 262 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 263 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */ 264 #define ifr_media ifr_ifru.ifru_media /* physical media */ 265 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 266 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */ 267 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */ 268 #define ifr_index ifr_ifru.ifru_index /* interface index */ 269 #define ifr_pollcpu ifr_ifru.ifru_pollcpu /* deprecated */ 270 #define ifr_tsolen ifr_ifru.ifru_tsolen /* max TSO length */ 271 }; 272 273 #define _SIZEOF_ADDR_IFREQ(ifr) \ 274 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \ 275 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \ 276 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq)) 277 278 struct ifaliasreq { 279 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 280 struct sockaddr ifra_addr; 281 struct sockaddr ifra_broadaddr; 282 struct sockaddr ifra_mask; 283 }; 284 285 struct ifmediareq { 286 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 287 int ifm_current; /* current media options */ 288 int ifm_mask; /* don't care mask */ 289 int ifm_status; /* media status */ 290 int ifm_active; /* active options */ 291 int ifm_count; /* # entries in ifm_ulist array */ 292 int *ifm_ulist; /* media words */ 293 }; 294 295 struct ifdrv { 296 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 297 unsigned long ifd_cmd; 298 size_t ifd_len; 299 void *ifd_data; 300 }; 301 302 /* 303 * Structure used to retrieve aux status data from interfaces. 304 * Kernel suppliers to this interface should respect the formatting 305 * needed by ifconfig(8): each line starts with a TAB and ends with 306 * a newline. The canonical example to copy and paste is in if_tun.c. 307 */ 308 309 #define IFSTATMAX 800 /* 10 lines of text */ 310 struct ifstat { 311 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 312 char ascii[IFSTATMAX + 1]; 313 }; 314 315 /* 316 * Structure used in SIOCGIFCONF request. 317 * Used to retrieve interface configuration 318 * for machine (useful for programs which 319 * must know all networks accessible). 320 */ 321 struct ifconf { 322 int ifc_len; /* size of associated buffer */ 323 union { 324 caddr_t ifcu_buf; 325 struct ifreq *ifcu_req; 326 } ifc_ifcu; 327 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 328 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 329 }; 330 331 /* 332 * interface groups 333 */ 334 335 #define IFG_ALL "all" /* group contains all interfaces */ 336 /* XXX: will we implement this? */ 337 #define IFG_EGRESS "egress" /* if(s) default route(s) point to */ 338 339 struct ifg_req { 340 union { 341 char ifgrqu_group[IFNAMSIZ]; 342 char ifgrqu_member[IFNAMSIZ]; 343 } ifgrq_ifgrqu; 344 #define ifgrq_group ifgrq_ifgrqu.ifgrqu_group 345 #define ifgrq_member ifgrq_ifgrqu.ifgrqu_member 346 }; 347 348 /* 349 * Used to lookup groups for an interface 350 */ 351 struct ifgroupreq { 352 char ifgr_name[IFNAMSIZ]; 353 u_int ifgr_len; 354 union { 355 char ifgru_group[IFNAMSIZ]; 356 struct ifg_req *ifgru_groups; 357 } ifgr_ifgru; 358 #define ifgr_group ifgr_ifgru.ifgru_group 359 #define ifgr_groups ifgr_ifgru.ifgru_groups 360 }; 361 362 /* 363 * Structure for SIOC[AGD]LIFADDR 364 */ 365 struct if_laddrreq { 366 char iflr_name[IFNAMSIZ]; 367 u_int flags; 368 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 369 u_int prefixlen; /* in/out */ 370 struct sockaddr_storage addr; /* in/out */ 371 struct sockaddr_storage dstaddr; /* out */ 372 }; 373 #endif /* __BSD_VISIBLE */ 374 375 #ifndef _KERNEL 376 struct if_nameindex { 377 unsigned int if_index; /* 1, 2, ... */ 378 char *if_name; /* null terminated name: "lnc0", ... */ 379 }; 380 381 __BEGIN_DECLS 382 unsigned int if_nametoindex(const char *); 383 char *if_indextoname(unsigned int, char *); 384 struct if_nameindex *if_nameindex(void); 385 void if_freenameindex(struct if_nameindex *); 386 __END_DECLS 387 388 #endif /* !_KERNEL */ 389 390 #endif /* !_NET_IF_H_ */ 391