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 * 4. 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 * $FreeBSD$ 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 * The same holds for <sys/socket.h>. (struct sockaddr ifru_addr) 43 */ 44 #ifndef _KERNEL 45 #include <sys/time.h> 46 #include <sys/socket.h> 47 #endif 48 #endif 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 /* historical value */ 58 #endif 59 #if __BSD_VISIBLE 60 61 /* 62 * Structure used to query names of interface cloners. 63 */ 64 65 struct if_clonereq { 66 int ifcr_total; /* total cloners (out) */ 67 int ifcr_count; /* room for this many in user buffer */ 68 char *ifcr_buffer; /* buffer for cloner names */ 69 }; 70 71 /* 72 * Structure describing information about an interface 73 * which may be of interest to management entities. 74 */ 75 struct if_data { 76 /* generic interface information */ 77 u_char ifi_type; /* ethernet, tokenring, etc */ 78 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ 79 u_char ifi_addrlen; /* media address length */ 80 u_char ifi_hdrlen; /* media header length */ 81 u_char ifi_link_state; /* current link state */ 82 u_char ifi_vhid; /* carp vhid */ 83 u_char ifi_baudrate_pf; /* baudrate power factor */ 84 u_char ifi_datalen; /* length of this data struct */ 85 u_long ifi_mtu; /* maximum transmission unit */ 86 u_long ifi_metric; /* routing metric (external only) */ 87 u_long ifi_baudrate; /* linespeed */ 88 /* volatile statistics */ 89 u_long ifi_ipackets; /* packets received on interface */ 90 u_long ifi_ierrors; /* input errors on interface */ 91 u_long ifi_opackets; /* packets sent on interface */ 92 u_long ifi_oerrors; /* output errors on interface */ 93 u_long ifi_collisions; /* collisions on csma interfaces */ 94 u_long ifi_ibytes; /* total number of octets received */ 95 u_long ifi_obytes; /* total number of octets sent */ 96 u_long ifi_imcasts; /* packets received via multicast */ 97 u_long ifi_omcasts; /* packets sent via multicast */ 98 u_long ifi_iqdrops; /* dropped on input, this interface */ 99 u_long ifi_noproto; /* destined for unsupported protocol */ 100 uint64_t ifi_hwassist; /* HW offload capabilities, see IFCAP */ 101 time_t ifi_epoch; /* uptime at attach or stat reset */ 102 struct timeval ifi_lastchange; /* time of last administrative change */ 103 }; 104 105 /*- 106 * Interface flags are of two types: network stack owned flags, and driver 107 * owned flags. Historically, these values were stored in the same ifnet 108 * flags field, but with the advent of fine-grained locking, they have been 109 * broken out such that the network stack is responsible for synchronizing 110 * the stack-owned fields, and the device driver the device-owned fields. 111 * Both halves can perform lockless reads of the other half's field, subject 112 * to accepting the involved races. 113 * 114 * Both sets of flags come from the same number space, and should not be 115 * permitted to conflict, as they are exposed to user space via a single 116 * field. 117 * 118 * The following symbols identify read and write requirements for fields: 119 * 120 * (i) if_flags field set by device driver before attach, read-only there 121 * after. 122 * (n) if_flags field written only by the network stack, read by either the 123 * stack or driver. 124 * (d) if_drv_flags field written only by the device driver, read by either 125 * the stack or driver. 126 */ 127 #define IFF_UP 0x1 /* (n) interface is up */ 128 #define IFF_BROADCAST 0x2 /* (i) broadcast address valid */ 129 #define IFF_DEBUG 0x4 /* (n) turn on debugging */ 130 #define IFF_LOOPBACK 0x8 /* (i) is a loopback net */ 131 #define IFF_POINTOPOINT 0x10 /* (i) is a point-to-point link */ 132 /* 0x20 was IFF_SMART */ 133 #define IFF_DRV_RUNNING 0x40 /* (d) resources allocated */ 134 #define IFF_NOARP 0x80 /* (n) no address resolution protocol */ 135 #define IFF_PROMISC 0x100 /* (n) receive all packets */ 136 #define IFF_ALLMULTI 0x200 /* (n) receive all multicast packets */ 137 #define IFF_DRV_OACTIVE 0x400 /* (d) tx hardware queue is full */ 138 #define IFF_SIMPLEX 0x800 /* (i) can't hear own transmissions */ 139 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 140 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 141 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 142 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ 143 #define IFF_MULTICAST 0x8000 /* (i) supports multicast */ 144 #define IFF_CANTCONFIG 0x10000 /* (i) unconfigurable using ioctl(2) */ 145 #define IFF_PPROMISC 0x20000 /* (n) user-requested promisc mode */ 146 #define IFF_MONITOR 0x40000 /* (n) user-requested monitor mode */ 147 #define IFF_STATICARP 0x80000 /* (n) static ARP */ 148 #define IFF_DYING 0x200000 /* (n) interface is winding down */ 149 #define IFF_RENAMING 0x400000 /* (n) interface is being renamed */ 150 /* 151 * Old names for driver flags so that user space tools can continue to use 152 * the old (portable) names. 153 */ 154 #ifndef _KERNEL 155 #define IFF_RUNNING IFF_DRV_RUNNING 156 #define IFF_OACTIVE IFF_DRV_OACTIVE 157 #endif 158 159 /* flags set internally only: */ 160 #define IFF_CANTCHANGE \ 161 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\ 162 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC|\ 163 IFF_DYING|IFF_CANTCONFIG) 164 165 /* 166 * Values for if_link_state. 167 */ 168 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 169 #define LINK_STATE_DOWN 1 /* link is down */ 170 #define LINK_STATE_UP 2 /* link is up */ 171 172 /* 173 * Some convenience macros used for setting ifi_baudrate. 174 * XXX 1000 vs. 1024? --thorpej@netbsd.org 175 */ 176 #define IF_Kbps(x) ((uintmax_t)(x) * 1000) /* kilobits/sec. */ 177 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 178 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 179 180 /* 181 * Capabilities that interfaces can advertise. 182 * 183 * struct ifnet.if_capabilities 184 * contains the optional features & capabilities a particular interface 185 * supports (not only the driver but also the detected hw revision). 186 * Capabilities are defined by IFCAP_* below. 187 * struct ifnet.if_capenable 188 * contains the enabled (either by default or through ifconfig) optional 189 * features & capabilities on this interface. 190 * Capabilities are defined by IFCAP_* below. 191 * struct if_data.ifi_hwassist in mbuf CSUM_ flag form, controlled by above 192 * contains the enabled optional feature & capabilites that can be used 193 * individually per packet and are specified in the mbuf pkthdr.csum_flags 194 * field. IFCAP_* and CSUM_* do not match one to one and CSUM_* may be 195 * more detailed or differenciated than IFCAP_*. 196 * Hwassist features are defined CSUM_* in sys/mbuf.h 197 * 198 * Capabilities that cannot be arbitrarily changed with ifconfig/ioctl 199 * are listed in IFCAP_CANTCHANGE, similar to IFF_CANTCHANGE. 200 * This is not strictly necessary because the common code never 201 * changes capabilities, and it is left to the individual driver 202 * to do the right thing. However, having the filter here 203 * avoids replication of the same code in all individual drivers. 204 */ 205 #define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */ 206 #define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */ 207 #define IFCAP_NETCONS 0x00004 /* can be a network console */ 208 #define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */ 209 #define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */ 210 #define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU supported */ 211 #define IFCAP_POLLING 0x00040 /* driver supports polling */ 212 #define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */ 213 #define IFCAP_TSO4 0x00100 /* can do TCP Segmentation Offload */ 214 #define IFCAP_TSO6 0x00200 /* can do TCP6 Segmentation Offload */ 215 #define IFCAP_LRO 0x00400 /* can do Large Receive Offload */ 216 #define IFCAP_WOL_UCAST 0x00800 /* wake on any unicast frame */ 217 #define IFCAP_WOL_MCAST 0x01000 /* wake on any multicast frame */ 218 #define IFCAP_WOL_MAGIC 0x02000 /* wake on any Magic Packet */ 219 #define IFCAP_TOE4 0x04000 /* interface can offload TCP */ 220 #define IFCAP_TOE6 0x08000 /* interface can offload TCP6 */ 221 #define IFCAP_VLAN_HWFILTER 0x10000 /* interface hw can filter vlan tag */ 222 #define IFCAP_POLLING_NOCOUNT 0x20000 /* polling ticks cannot be fragmented */ 223 #define IFCAP_VLAN_HWTSO 0x40000 /* can do IFCAP_TSO on VLANs */ 224 #define IFCAP_LINKSTATE 0x80000 /* the runtime link state is dynamic */ 225 #define IFCAP_NETMAP 0x100000 /* netmap mode supported/enabled */ 226 #define IFCAP_RXCSUM_IPV6 0x200000 /* can offload checksum on IPv6 RX */ 227 #define IFCAP_TXCSUM_IPV6 0x400000 /* can offload checksum on IPv6 TX */ 228 #define IFCAP_HWSTATS 0x800000 /* manages counters internally */ 229 230 #define IFCAP_HWCSUM_IPV6 (IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6) 231 232 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM) 233 #define IFCAP_TSO (IFCAP_TSO4 | IFCAP_TSO6) 234 #define IFCAP_WOL (IFCAP_WOL_UCAST | IFCAP_WOL_MCAST | IFCAP_WOL_MAGIC) 235 #define IFCAP_TOE (IFCAP_TOE4 | IFCAP_TOE6) 236 237 #define IFCAP_CANTCHANGE (IFCAP_NETMAP) 238 239 #define IFQ_MAXLEN 50 240 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 241 242 /* 243 * Message format for use in obtaining information about interfaces 244 * from getkerninfo and the routing socket 245 * For the new, extensible interface see struct if_msghdrl below. 246 */ 247 struct if_msghdr { 248 u_short ifm_msglen; /* to skip over non-understood messages */ 249 u_char ifm_version; /* future binary compatibility */ 250 u_char ifm_type; /* message type */ 251 int ifm_addrs; /* like rtm_addrs */ 252 int ifm_flags; /* value of if_flags */ 253 u_short ifm_index; /* index for associated ifp */ 254 struct if_data ifm_data;/* statistics and other data about if */ 255 }; 256 257 /* 258 * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is 259 * extensible after ifm_data_off or within ifm_data. Both the if_msghdr and 260 * if_data now have a member field detailing the struct length in addition to 261 * the routing message length. Macros are provided to find the start of 262 * ifm_data and the start of the socket address strucutres immediately following 263 * struct if_msghdrl given a pointer to struct if_msghdrl. 264 */ 265 #define IF_MSGHDRL_IFM_DATA(_l) \ 266 (struct if_data *)((char *)(_l) + (_l)->ifm_data_off) 267 #define IF_MSGHDRL_RTA(_l) \ 268 (void *)((uintptr_t)(_l) + (_l)->ifm_len) 269 struct if_msghdrl { 270 u_short ifm_msglen; /* to skip over non-understood messages */ 271 u_char ifm_version; /* future binary compatibility */ 272 u_char ifm_type; /* message type */ 273 int ifm_addrs; /* like rtm_addrs */ 274 int ifm_flags; /* value of if_flags */ 275 u_short ifm_index; /* index for associated ifp */ 276 u_short _ifm_spare1; /* spare space to grow if_index, see if_var.h */ 277 u_short ifm_len; /* length of if_msghdrl incl. if_data */ 278 u_short ifm_data_off; /* offset of if_data from beginning */ 279 struct if_data ifm_data;/* statistics and other data about if */ 280 }; 281 282 /* 283 * Message format for use in obtaining information about interface addresses 284 * from getkerninfo and the routing socket 285 * For the new, extensible interface see struct ifa_msghdrl below. 286 */ 287 struct ifa_msghdr { 288 u_short ifam_msglen; /* to skip over non-understood messages */ 289 u_char ifam_version; /* future binary compatibility */ 290 u_char ifam_type; /* message type */ 291 int ifam_addrs; /* like rtm_addrs */ 292 int ifam_flags; /* value of ifa_flags */ 293 u_short ifam_index; /* index for associated ifp */ 294 int ifam_metric; /* value of ifa_metric */ 295 }; 296 297 /* 298 * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is 299 * extensible after ifam_metric or within ifam_data. Both the ifa_msghdrl and 300 * if_data now have a member field detailing the struct length in addition to 301 * the routing message length. Macros are provided to find the start of 302 * ifm_data and the start of the socket address strucutres immediately following 303 * struct ifa_msghdrl given a pointer to struct ifa_msghdrl. 304 */ 305 #define IFA_MSGHDRL_IFAM_DATA(_l) \ 306 (struct if_data *)((char *)(_l) + (_l)->ifam_data_off) 307 #define IFA_MSGHDRL_RTA(_l) \ 308 (void *)((uintptr_t)(_l) + (_l)->ifam_len) 309 struct ifa_msghdrl { 310 u_short ifam_msglen; /* to skip over non-understood messages */ 311 u_char ifam_version; /* future binary compatibility */ 312 u_char ifam_type; /* message type */ 313 int ifam_addrs; /* like rtm_addrs */ 314 int ifam_flags; /* value of ifa_flags */ 315 u_short ifam_index; /* index for associated ifp */ 316 u_short _ifam_spare1; /* spare space to grow if_index, see if_var.h */ 317 u_short ifam_len; /* length of ifa_msghdrl incl. if_data */ 318 u_short ifam_data_off; /* offset of if_data from beginning */ 319 int ifam_metric; /* value of ifa_metric */ 320 struct if_data ifam_data;/* statistics and other data about if or 321 * address */ 322 }; 323 324 /* 325 * Message format for use in obtaining information about multicast addresses 326 * from the routing socket 327 */ 328 struct ifma_msghdr { 329 u_short ifmam_msglen; /* to skip over non-understood messages */ 330 u_char ifmam_version; /* future binary compatibility */ 331 u_char ifmam_type; /* message type */ 332 int ifmam_addrs; /* like rtm_addrs */ 333 int ifmam_flags; /* value of ifa_flags */ 334 u_short ifmam_index; /* index for associated ifp */ 335 }; 336 337 /* 338 * Message format announcing the arrival or departure of a network interface. 339 */ 340 struct if_announcemsghdr { 341 u_short ifan_msglen; /* to skip over non-understood messages */ 342 u_char ifan_version; /* future binary compatibility */ 343 u_char ifan_type; /* message type */ 344 u_short ifan_index; /* index for associated ifp */ 345 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 346 u_short ifan_what; /* what type of announcement */ 347 }; 348 349 #define IFAN_ARRIVAL 0 /* interface arrival */ 350 #define IFAN_DEPARTURE 1 /* interface departure */ 351 352 /* 353 * Buffer with length to be used in SIOCGIFDESCR/SIOCSIFDESCR requests 354 */ 355 struct ifreq_buffer { 356 size_t length; 357 void *buffer; 358 }; 359 360 /* 361 * Interface request structure used for socket 362 * ioctl's. All interface ioctl's must have parameter 363 * definitions which begin with ifr_name. The 364 * remainder may be interface specific. 365 */ 366 struct ifreq { 367 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 368 union { 369 struct sockaddr ifru_addr; 370 struct sockaddr ifru_dstaddr; 371 struct sockaddr ifru_broadaddr; 372 struct ifreq_buffer ifru_buffer; 373 short ifru_flags[2]; 374 short ifru_index; 375 int ifru_jid; 376 int ifru_metric; 377 int ifru_mtu; 378 int ifru_phys; 379 int ifru_media; 380 caddr_t ifru_data; 381 int ifru_cap[2]; 382 u_int ifru_fib; 383 } ifr_ifru; 384 #define ifr_addr ifr_ifru.ifru_addr /* address */ 385 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 386 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 387 #define ifr_buffer ifr_ifru.ifru_buffer /* user supplied buffer with its length */ 388 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */ 389 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */ 390 #define ifr_jid ifr_ifru.ifru_jid /* jail/vnet */ 391 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 392 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 393 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */ 394 #define ifr_media ifr_ifru.ifru_media /* physical media */ 395 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 396 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */ 397 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */ 398 #define ifr_index ifr_ifru.ifru_index /* interface index */ 399 #define ifr_fib ifr_ifru.ifru_fib /* interface fib */ 400 }; 401 402 #define _SIZEOF_ADDR_IFREQ(ifr) \ 403 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \ 404 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \ 405 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq)) 406 407 struct ifaliasreq { 408 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 409 struct sockaddr ifra_addr; 410 struct sockaddr ifra_broadaddr; 411 struct sockaddr ifra_mask; 412 int ifra_vhid; 413 }; 414 415 /* 9.x compat */ 416 struct oifaliasreq { 417 char ifra_name[IFNAMSIZ]; 418 struct sockaddr ifra_addr; 419 struct sockaddr ifra_broadaddr; 420 struct sockaddr ifra_mask; 421 }; 422 423 struct ifmediareq { 424 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 425 int ifm_current; /* current media options */ 426 int ifm_mask; /* don't care mask */ 427 int ifm_status; /* media status */ 428 int ifm_active; /* active options */ 429 int ifm_count; /* # entries in ifm_ulist array */ 430 int *ifm_ulist; /* media words */ 431 }; 432 433 struct ifdrv { 434 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 435 unsigned long ifd_cmd; 436 size_t ifd_len; 437 void *ifd_data; 438 }; 439 440 /* 441 * Structure used to retrieve aux status data from interfaces. 442 * Kernel suppliers to this interface should respect the formatting 443 * needed by ifconfig(8): each line starts with a TAB and ends with 444 * a newline. The canonical example to copy and paste is in if_tun.c. 445 */ 446 447 #define IFSTATMAX 800 /* 10 lines of text */ 448 struct ifstat { 449 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 450 char ascii[IFSTATMAX + 1]; 451 }; 452 453 /* 454 * Structure used in SIOCGIFCONF request. 455 * Used to retrieve interface configuration 456 * for machine (useful for programs which 457 * must know all networks accessible). 458 */ 459 struct ifconf { 460 int ifc_len; /* size of associated buffer */ 461 union { 462 caddr_t ifcu_buf; 463 struct ifreq *ifcu_req; 464 } ifc_ifcu; 465 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 466 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 467 }; 468 469 /* 470 * interface groups 471 */ 472 473 #define IFG_ALL "all" /* group contains all interfaces */ 474 /* XXX: will we implement this? */ 475 #define IFG_EGRESS "egress" /* if(s) default route(s) point to */ 476 477 struct ifg_req { 478 union { 479 char ifgrqu_group[IFNAMSIZ]; 480 char ifgrqu_member[IFNAMSIZ]; 481 } ifgrq_ifgrqu; 482 #define ifgrq_group ifgrq_ifgrqu.ifgrqu_group 483 #define ifgrq_member ifgrq_ifgrqu.ifgrqu_member 484 }; 485 486 /* 487 * Used to lookup groups for an interface 488 */ 489 struct ifgroupreq { 490 char ifgr_name[IFNAMSIZ]; 491 u_int ifgr_len; 492 union { 493 char ifgru_group[IFNAMSIZ]; 494 struct ifg_req *ifgru_groups; 495 } ifgr_ifgru; 496 #define ifgr_group ifgr_ifgru.ifgru_group 497 #define ifgr_groups ifgr_ifgru.ifgru_groups 498 }; 499 500 #endif /* __BSD_VISIBLE */ 501 502 #ifdef _KERNEL 503 #ifdef MALLOC_DECLARE 504 MALLOC_DECLARE(M_IFADDR); 505 MALLOC_DECLARE(M_IFMADDR); 506 #endif 507 #endif 508 509 #ifndef _KERNEL 510 struct if_nameindex { 511 unsigned int if_index; /* 1, 2, ... */ 512 char *if_name; /* null terminated name: "le0", ... */ 513 }; 514 515 __BEGIN_DECLS 516 void if_freenameindex(struct if_nameindex *); 517 char *if_indextoname(unsigned int, char *); 518 struct if_nameindex *if_nameindex(void); 519 unsigned int if_nametoindex(const char *); 520 __END_DECLS 521 #endif 522 #endif /* !_NET_IF_H_ */ 523