if.h revision 1.54
1 /* $NetBSD: if.h,v 1.54 2000/10/11 16:52:34 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by William Studnemund and Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1982, 1986, 1989, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)if.h 8.3 (Berkeley) 2/9/95 72 */ 73 74 #ifndef _NET_IF_H_ 75 #define _NET_IF_H_ 76 77 #if !defined(_XOPEN_SOURCE) 78 79 #include <sys/queue.h> 80 81 /* 82 * Structures defining a network interface, providing a packet 83 * transport mechanism (ala level 0 of the PUP protocols). 84 * 85 * Each interface accepts output datagrams of a specified maximum 86 * length, and provides higher level routines with input datagrams 87 * received from its medium. 88 * 89 * Output occurs when the routine if_output is called, with four parameters: 90 * (*ifp->if_output)(ifp, m, dst, rt) 91 * Here m is the mbuf chain to be sent and dst is the destination address. 92 * The output routine encapsulates the supplied datagram if necessary, 93 * and then transmits it on its medium. 94 * 95 * On input, each interface unwraps the data received by it, and either 96 * places it on the input queue of a internetwork datagram routine 97 * and posts the associated software interrupt, or passes the datagram to a raw 98 * packet input routine. 99 * 100 * Routines exist for locating interfaces by their addresses 101 * or for locating a interface on a certain network, as well as more general 102 * routing and gateway routines maintaining information used to locate 103 * interfaces. These routines live in the files if.c and route.c 104 */ 105 /* XXX fast fix for SNMP, going away soon */ 106 #include <sys/time.h> 107 108 #if defined(_KERNEL) && !defined(_LKM) 109 #include "opt_compat_netbsd.h" 110 #endif 111 112 struct mbuf; 113 struct proc; 114 struct rtentry; 115 struct socket; 116 struct ether_header; 117 struct ifnet; 118 119 /* 120 * Length of interface external name, including terminating '\0'. 121 * Note: this is the same size as a generic device's external name. 122 */ 123 #define IFNAMSIZ 16 124 #define IF_NAMESIZE IFNAMSIZ 125 126 /* 127 * Structure describing a `cloning' interface. 128 */ 129 struct if_clone { 130 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 131 const char *ifc_name; /* name of device, e.g. `gif' */ 132 size_t ifc_namelen; /* length of name */ 133 134 int (*ifc_create)(struct if_clone *, int); 135 void (*ifc_destroy)(struct ifnet *); 136 }; 137 138 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 139 { { 0 }, name, sizeof(name) - 1, create, destroy } 140 141 /* 142 * Structure used to query names of interface cloners. 143 */ 144 struct if_clonereq { 145 int ifcr_total; /* total cloners (out) */ 146 int ifcr_count; /* room for this many in user buffer */ 147 char *ifcr_buffer; /* buffer for cloner names */ 148 }; 149 150 /* 151 * Structure defining statistics and other data kept regarding a network 152 * interface. 153 */ 154 struct if_data { 155 /* generic interface information */ 156 u_char ifi_type; /* ethernet, tokenring, etc. */ 157 u_char ifi_addrlen; /* media address length */ 158 u_char ifi_hdrlen; /* media header length */ 159 int ifi_link_state; /* current link state */ 160 u_quad_t ifi_mtu; /* maximum transmission unit */ 161 u_quad_t ifi_metric; /* routing metric (external only) */ 162 u_quad_t ifi_baudrate; /* linespeed */ 163 /* volatile statistics */ 164 u_quad_t ifi_ipackets; /* packets received on interface */ 165 u_quad_t ifi_ierrors; /* input errors on interface */ 166 u_quad_t ifi_opackets; /* packets sent on interface */ 167 u_quad_t ifi_oerrors; /* output errors on interface */ 168 u_quad_t ifi_collisions; /* collisions on csma interfaces */ 169 u_quad_t ifi_ibytes; /* total number of octets received */ 170 u_quad_t ifi_obytes; /* total number of octets sent */ 171 u_quad_t ifi_imcasts; /* packets received via multicast */ 172 u_quad_t ifi_omcasts; /* packets sent via multicast */ 173 u_quad_t ifi_iqdrops; /* dropped on input, this interface */ 174 u_quad_t ifi_noproto; /* destined for unsupported protocol */ 175 struct timeval ifi_lastchange; /* last updated */ 176 }; 177 178 /* 179 * Values for if_link_state. 180 */ 181 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 182 #define LINK_STATE_DOWN 1 /* link is down */ 183 #define LINK_STATE_UP 2 /* link is up */ 184 185 #if defined(_KERNEL) && defined(COMPAT_14) 186 /* Pre-1.5 if_data struct */ 187 struct if_data14 { 188 /* generic interface information */ 189 u_char ifi_type; /* ethernet, tokenring, etc. */ 190 u_char ifi_addrlen; /* media address length */ 191 u_char ifi_hdrlen; /* media header length */ 192 u_long ifi_mtu; /* maximum transmission unit */ 193 u_long ifi_metric; /* routing metric (external only) */ 194 u_long ifi_baudrate; /* linespeed */ 195 /* volatile statistics */ 196 u_long ifi_ipackets; /* packets received on interface */ 197 u_long ifi_ierrors; /* input errors on interface */ 198 u_long ifi_opackets; /* packets sent on interface */ 199 u_long ifi_oerrors; /* output errors on interface */ 200 u_long ifi_collisions; /* collisions on csma interfaces */ 201 u_long ifi_ibytes; /* total number of octets received */ 202 u_long ifi_obytes; /* total number of octets sent */ 203 u_long ifi_imcasts; /* packets received via multicast */ 204 u_long ifi_omcasts; /* packets sent via multicast */ 205 u_long ifi_iqdrops; /* dropped on input, this interface */ 206 u_long ifi_noproto; /* destined for unsupported protocol */ 207 struct timeval ifi_lastchange; /* last updated */ 208 }; 209 #endif /* _KERNEL && COMPAT_14 */ 210 211 /* 212 * Structure defining a queue for a network interface. 213 * 214 * (Would like to call this struct ``if'', but C isn't PL/1.) 215 */ 216 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 217 218 struct ifnet { /* and the entries */ 219 void *if_softc; /* lower-level data for this if */ 220 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 221 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 222 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 223 int if_pcount; /* number of promiscuous listeners */ 224 caddr_t if_bpf; /* packet filter structure */ 225 u_short if_index; /* numeric abbreviation for this if */ 226 short if_timer; /* time 'til if_watchdog called */ 227 short if_flags; /* up/down, broadcast, etc. */ 228 short if__pad1; /* be nice to m68k ports */ 229 struct if_data if_data; /* statistics and other data about if */ 230 /* 231 * Procedure handles. If you add more of these, don't forget the 232 * corresponding NULL stub in if.c. 233 */ 234 int (*if_output) /* output routine (enqueue) */ 235 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 236 struct rtentry *)); 237 void (*if_input) /* input routine (from h/w driver) */ 238 __P((struct ifnet *, struct mbuf *)); 239 void (*if_start) /* initiate output routine */ 240 __P((struct ifnet *)); 241 int (*if_ioctl) /* ioctl routine */ 242 __P((struct ifnet *, u_long, caddr_t)); 243 int (*if_init) /* init routine */ 244 __P((struct ifnet *)); 245 void (*if_stop) /* stop routine */ 246 __P((struct ifnet *, int)); 247 void (*if_watchdog) /* timer routine */ 248 __P((struct ifnet *)); 249 void (*if_drain) /* routine to release resources */ 250 __P((struct ifnet *)); 251 struct ifqueue { 252 struct mbuf *ifq_head; 253 struct mbuf *ifq_tail; 254 int ifq_len; 255 int ifq_maxlen; 256 int ifq_drops; 257 } if_snd; /* output queue */ 258 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 259 u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 260 struct ifprefix *if_prefixlist; /* linked list of prefixes per if */ 261 }; 262 #define if_mtu if_data.ifi_mtu 263 #define if_type if_data.ifi_type 264 #define if_addrlen if_data.ifi_addrlen 265 #define if_hdrlen if_data.ifi_hdrlen 266 #define if_metric if_data.ifi_metric 267 #define if_link_state if_data.ifi_link_state 268 #define if_baudrate if_data.ifi_baudrate 269 #define if_ipackets if_data.ifi_ipackets 270 #define if_ierrors if_data.ifi_ierrors 271 #define if_opackets if_data.ifi_opackets 272 #define if_oerrors if_data.ifi_oerrors 273 #define if_collisions if_data.ifi_collisions 274 #define if_ibytes if_data.ifi_ibytes 275 #define if_obytes if_data.ifi_obytes 276 #define if_imcasts if_data.ifi_imcasts 277 #define if_omcasts if_data.ifi_omcasts 278 #define if_iqdrops if_data.ifi_iqdrops 279 #define if_noproto if_data.ifi_noproto 280 #define if_lastchange if_data.ifi_lastchange 281 282 #define IFF_UP 0x1 /* interface is up */ 283 #define IFF_BROADCAST 0x2 /* broadcast address valid */ 284 #define IFF_DEBUG 0x4 /* turn on debugging */ 285 #define IFF_LOOPBACK 0x8 /* is a loopback net */ 286 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 287 #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ 288 #define IFF_RUNNING 0x40 /* resources allocated */ 289 #define IFF_NOARP 0x80 /* no address resolution protocol */ 290 #define IFF_PROMISC 0x100 /* receive all packets */ 291 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 292 #define IFF_OACTIVE 0x400 /* transmission in progress */ 293 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 294 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 295 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 296 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 297 #define IFF_MULTICAST 0x8000 /* supports multicast */ 298 299 /* flags set internally only: */ 300 #define IFF_CANTCHANGE \ 301 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 302 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 303 304 /* 305 * Some convenience macros used for setting ifi_baudrate. 306 * XXX 1000 vs. 1024? --thorpej (at) netbsd.org 307 */ 308 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 309 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 310 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 311 312 /* 313 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 314 * input routines have queues of messages stored on ifqueue structures 315 * (defined above). Entries are added to and deleted from these structures 316 * by these macros, which should be called with ipl raised to splimp(). 317 */ 318 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 319 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 320 #define IF_ENQUEUE(ifq, m) { \ 321 (m)->m_nextpkt = 0; \ 322 if ((ifq)->ifq_tail == 0) \ 323 (ifq)->ifq_head = m; \ 324 else \ 325 (ifq)->ifq_tail->m_nextpkt = m; \ 326 (ifq)->ifq_tail = m; \ 327 (ifq)->ifq_len++; \ 328 } 329 #define IF_PREPEND(ifq, m) { \ 330 (m)->m_nextpkt = (ifq)->ifq_head; \ 331 if ((ifq)->ifq_tail == 0) \ 332 (ifq)->ifq_tail = (m); \ 333 (ifq)->ifq_head = (m); \ 334 (ifq)->ifq_len++; \ 335 } 336 #define IF_DEQUEUE(ifq, m) { \ 337 (m) = (ifq)->ifq_head; \ 338 if (m) { \ 339 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 340 (ifq)->ifq_tail = 0; \ 341 (m)->m_nextpkt = 0; \ 342 (ifq)->ifq_len--; \ 343 } \ 344 } 345 346 #define IFQ_MAXLEN 50 347 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 348 349 /* 350 * Structure defining statistics and other data kept regarding an address 351 * on a network interface. 352 */ 353 struct ifaddr_data { 354 int64_t ifad_inbytes; 355 int64_t ifad_outbytes; 356 }; 357 358 /* 359 * The ifaddr structure contains information about one address 360 * of an interface. They are maintained by the different address families, 361 * are allocated and attached when an address is set, and are linked 362 * together so all addresses for an interface can be located. 363 */ 364 struct ifaddr { 365 struct sockaddr *ifa_addr; /* address of interface */ 366 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 367 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 368 struct sockaddr *ifa_netmask; /* used to determine subnet */ 369 struct ifnet *ifa_ifp; /* back-pointer to interface */ 370 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 371 struct ifaddr_data ifa_data; /* statistics on the address */ 372 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 373 __P((int, struct rtentry *, struct sockaddr *)); 374 u_int ifa_flags; /* mostly rt_flags for cloning */ 375 int ifa_refcnt; /* count of references */ 376 int ifa_metric; /* cost of going out this interface */ 377 }; 378 #define IFA_ROUTE RTF_UP /* route installed */ 379 380 /* 381 * The prefix structure contains information about one prefix 382 * of an interface. They are maintained by the different address families, 383 * are allocated and attached when an prefix or an address is set, 384 * and are linked together so all prfefixes for an interface can be located. 385 */ 386 struct ifprefix { 387 struct sockaddr *ifpr_prefix; /* prefix of interface */ 388 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 389 struct ifprefix *ifpr_next; 390 u_char ifpr_plen; /* prefix length in bits */ 391 u_char ifpr_type; /* protocol dependent prefix type */ 392 }; 393 394 /* 395 * Message format for use in obtaining information about interfaces 396 * from sysctl and the routing socket. 397 */ 398 struct if_msghdr { 399 u_short ifm_msglen; /* to skip over non-understood messages */ 400 u_char ifm_version; /* future binary compatability */ 401 u_char ifm_type; /* message type */ 402 int ifm_addrs; /* like rtm_addrs */ 403 int ifm_flags; /* value of if_flags */ 404 u_short ifm_index; /* index for associated ifp */ 405 struct if_data ifm_data;/* statistics and other data about if */ 406 }; 407 408 #if defined(_KERNEL) && defined(COMPAT_14) 409 /* pre-1.5 if_msghdr (ifm_data changed) */ 410 struct if_msghdr14 { 411 u_short ifm_msglen; /* to skip over non-understood messages */ 412 u_char ifm_version; /* future binary compatability */ 413 u_char ifm_type; /* message type */ 414 int ifm_addrs; /* like rtm_addrs */ 415 int ifm_flags; /* value of if_flags */ 416 u_short ifm_index; /* index for associated ifp */ 417 struct if_data14 ifm_data; /* statistics and other data about if */ 418 }; 419 #endif /* _KERNEL && COMPAT_14 */ 420 421 /* 422 * Message format for use in obtaining information about interface addresses 423 * from sysctl and the routing socket. 424 */ 425 struct ifa_msghdr { 426 u_short ifam_msglen; /* to skip over non-understood messages */ 427 u_char ifam_version; /* future binary compatability */ 428 u_char ifam_type; /* message type */ 429 int ifam_addrs; /* like rtm_addrs */ 430 int ifam_flags; /* value of ifa_flags */ 431 u_short ifam_index; /* index for associated ifp */ 432 int ifam_metric; /* value of ifa_metric */ 433 }; 434 435 /* 436 * Message format announcing the arrival or departure of a network interface. 437 */ 438 struct if_announcemsghdr { 439 u_short ifan_msglen; /* to skip over non-understood messages */ 440 u_char ifan_version; /* future binary compatibility */ 441 u_char ifan_type; /* message type */ 442 u_short ifan_index; /* index for associated ifp */ 443 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 444 u_short ifan_what; /* what type of announcement */ 445 }; 446 447 #define IFAN_ARRIVAL 0 /* interface arrival */ 448 #define IFAN_DEPARTURE 1 /* interface departure */ 449 450 /* 451 * Interface request structure used for socket 452 * ioctl's. All interface ioctl's must have parameter 453 * definitions which begin with ifr_name. The 454 * remainder may be interface specific. 455 */ 456 struct ifreq { 457 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 458 union { 459 struct sockaddr ifru_addr; 460 struct sockaddr ifru_dstaddr; 461 struct sockaddr ifru_broadaddr; 462 short ifru_flags; 463 int ifru_metric; 464 int ifru_mtu; 465 u_int ifru_value; 466 caddr_t ifru_data; 467 } ifr_ifru; 468 #define ifr_addr ifr_ifru.ifru_addr /* address */ 469 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 470 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 471 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 472 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 473 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 474 #define ifr_value ifr_ifru.ifru_value /* generic value */ 475 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 476 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 477 }; 478 479 struct ifaliasreq { 480 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 481 struct sockaddr ifra_addr; 482 struct sockaddr ifra_dstaddr; 483 #define ifra_broadaddr ifra_dstaddr 484 struct sockaddr ifra_mask; 485 }; 486 487 struct ifmediareq { 488 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 489 int ifm_current; /* current media options */ 490 int ifm_mask; /* don't care mask */ 491 int ifm_status; /* media status */ 492 int ifm_active; /* active options */ 493 int ifm_count; /* # entries in ifm_ulist 494 array */ 495 int *ifm_ulist; /* media words */ 496 }; 497 498 499 struct ifdrv { 500 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 501 unsigned long ifd_cmd; 502 size_t ifd_len; 503 void *ifd_data; 504 }; 505 506 /* 507 * Structure used in SIOCGIFCONF request. 508 * Used to retrieve interface configuration 509 * for machine (useful for programs which 510 * must know all networks accessible). 511 */ 512 struct ifconf { 513 int ifc_len; /* size of associated buffer */ 514 union { 515 caddr_t ifcu_buf; 516 struct ifreq *ifcu_req; 517 } ifc_ifcu; 518 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 519 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 520 }; 521 522 /* 523 * Structure for SIOC[AGD]LIFADDR 524 */ 525 struct if_laddrreq { 526 char iflr_name[IFNAMSIZ]; 527 unsigned int flags; 528 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 529 unsigned int prefixlen; /* in/out */ 530 struct sockaddr_storage addr; /* in/out */ 531 struct sockaddr_storage dstaddr; /* out */ 532 }; 533 534 #include <net/if_arp.h> 535 536 #endif /* !_XOPEN_SOURCE */ 537 538 #ifdef _KERNEL 539 #ifdef IFAREF_DEBUG 540 #define IFAREF(ifa) \ 541 do { \ 542 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 543 (ifa), ++(ifa)->ifa_refcnt); \ 544 } while (0) 545 546 #define IFAFREE(ifa) \ 547 do { \ 548 if ((ifa)->ifa_refcnt <= 0) \ 549 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 550 __LINE__, (ifa)); \ 551 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 552 (ifa), --(ifa)->ifa_refcnt); \ 553 if ((ifa)->ifa_refcnt == 0) \ 554 ifafree(ifa); \ 555 } while (0) 556 #else 557 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 558 559 #ifdef DIAGNOSTIC 560 #define IFAFREE(ifa) \ 561 do { \ 562 if ((ifa)->ifa_refcnt <= 0) \ 563 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 564 __LINE__, (ifa)); \ 565 if (--(ifa)->ifa_refcnt == 0) \ 566 ifafree(ifa); \ 567 } while (0) 568 #else 569 #define IFAFREE(ifa) \ 570 do { \ 571 if (--(ifa)->ifa_refcnt == 0) \ 572 ifafree(ifa); \ 573 } while (0) 574 #endif /* DIAGNOSTIC */ 575 #endif /* IFAREF_DEBUG */ 576 577 struct ifnet_head ifnet; 578 extern struct ifnet **ifindex2ifnet; 579 #if 0 580 struct ifnet loif[]; 581 #endif 582 extern int if_index; 583 584 void ether_ifattach __P((struct ifnet *, const u_int8_t *)); 585 void ether_ifdetach __P((struct ifnet *)); 586 char *ether_sprintf __P((const u_char *)); 587 588 void if_attach __P((struct ifnet *)); 589 void if_deactivate __P((struct ifnet *)); 590 void if_detach __P((struct ifnet *)); 591 void if_down __P((struct ifnet *)); 592 void if_qflush __P((struct ifqueue *)); 593 void if_slowtimo __P((void *)); 594 void if_up __P((struct ifnet *)); 595 int ifconf __P((u_long, caddr_t)); 596 void ifinit __P((void)); 597 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 598 int ifpromisc __P((struct ifnet *, int)); 599 struct ifnet *ifunit __P((const char *)); 600 601 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 602 struct ifaddr *ifa_ifwithaf __P((int)); 603 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 604 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 605 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 606 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 607 struct sockaddr *)); 608 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 609 void ifafree __P((struct ifaddr *)); 610 void link_rtrequest __P((int, struct rtentry *, struct sockaddr *)); 611 612 void if_clone_attach __P((struct if_clone *)); 613 void if_clone_detach __P((struct if_clone *)); 614 615 int if_clone_create __P((const char *)); 616 int if_clone_destroy __P((const char *)); 617 618 int loioctl __P((struct ifnet *, u_long, caddr_t)); 619 void loopattach __P((int)); 620 int looutput __P((struct ifnet *, 621 struct mbuf *, struct sockaddr *, struct rtentry *)); 622 void lortrequest __P((int, struct rtentry *, struct sockaddr *)); 623 624 /* 625 * These are exported because they're an easy way to tell if 626 * an interface is going away without having to burn a flag. 627 */ 628 int if_nulloutput __P((struct ifnet *, struct mbuf *, 629 struct sockaddr *, struct rtentry *)); 630 void if_nullinput __P((struct ifnet *, struct mbuf *)); 631 void if_nullstart __P((struct ifnet *)); 632 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 633 int if_nullinit __P((struct ifnet *)); 634 void if_nullstop __P((struct ifnet *, int)); 635 void if_nullwatchdog __P((struct ifnet *)); 636 void if_nulldrain __P((struct ifnet *)); 637 #else 638 struct if_nameindex { 639 unsigned int if_index; /* 1, 2, ... */ 640 char *if_name; /* null terminated name: "le0", ... */ 641 }; 642 643 #include <sys/cdefs.h> 644 __BEGIN_DECLS 645 unsigned int if_nametoindex __P((const char *)); 646 char * if_indextoname __P((unsigned int, char *)); 647 struct if_nameindex * if_nameindex __P((void)); 648 void if_freenameindex __P((struct if_nameindex *)); 649 __END_DECLS 650 #endif /* _KERNEL */ 651 #endif /* !_NET_IF_H_ */ 652
Indexes created Wed Sep 24 15:09:51 GMT 2025