if.h revision 1.53
1 /* $NetBSD: if.h,v 1.53 2000/07/20 18:40:27 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_reset) /* XXX bus reset routine */ 244 __P((struct ifnet *)); 245 void (*if_watchdog) /* timer routine */ 246 __P((struct ifnet *)); 247 void (*if_drain) /* routine to release resources */ 248 __P((struct ifnet *)); 249 struct ifqueue { 250 struct mbuf *ifq_head; 251 struct mbuf *ifq_tail; 252 int ifq_len; 253 int ifq_maxlen; 254 int ifq_drops; 255 } if_snd; /* output queue */ 256 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 257 u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 258 struct ifprefix *if_prefixlist; /* linked list of prefixes per if */ 259 }; 260 #define if_mtu if_data.ifi_mtu 261 #define if_type if_data.ifi_type 262 #define if_addrlen if_data.ifi_addrlen 263 #define if_hdrlen if_data.ifi_hdrlen 264 #define if_metric if_data.ifi_metric 265 #define if_link_state if_data.ifi_link_state 266 #define if_baudrate if_data.ifi_baudrate 267 #define if_ipackets if_data.ifi_ipackets 268 #define if_ierrors if_data.ifi_ierrors 269 #define if_opackets if_data.ifi_opackets 270 #define if_oerrors if_data.ifi_oerrors 271 #define if_collisions if_data.ifi_collisions 272 #define if_ibytes if_data.ifi_ibytes 273 #define if_obytes if_data.ifi_obytes 274 #define if_imcasts if_data.ifi_imcasts 275 #define if_omcasts if_data.ifi_omcasts 276 #define if_iqdrops if_data.ifi_iqdrops 277 #define if_noproto if_data.ifi_noproto 278 #define if_lastchange if_data.ifi_lastchange 279 280 #define IFF_UP 0x1 /* interface is up */ 281 #define IFF_BROADCAST 0x2 /* broadcast address valid */ 282 #define IFF_DEBUG 0x4 /* turn on debugging */ 283 #define IFF_LOOPBACK 0x8 /* is a loopback net */ 284 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 285 #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ 286 #define IFF_RUNNING 0x40 /* resources allocated */ 287 #define IFF_NOARP 0x80 /* no address resolution protocol */ 288 #define IFF_PROMISC 0x100 /* receive all packets */ 289 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 290 #define IFF_OACTIVE 0x400 /* transmission in progress */ 291 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 292 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 293 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 294 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 295 #define IFF_MULTICAST 0x8000 /* supports multicast */ 296 297 /* flags set internally only: */ 298 #define IFF_CANTCHANGE \ 299 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 300 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 301 302 /* 303 * Some convenience macros used for setting ifi_baudrate. 304 * XXX 1000 vs. 1024? --thorpej (at) netbsd.org 305 */ 306 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 307 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 308 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 309 310 /* 311 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 312 * input routines have queues of messages stored on ifqueue structures 313 * (defined above). Entries are added to and deleted from these structures 314 * by these macros, which should be called with ipl raised to splimp(). 315 */ 316 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 317 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 318 #define IF_ENQUEUE(ifq, m) { \ 319 (m)->m_nextpkt = 0; \ 320 if ((ifq)->ifq_tail == 0) \ 321 (ifq)->ifq_head = m; \ 322 else \ 323 (ifq)->ifq_tail->m_nextpkt = m; \ 324 (ifq)->ifq_tail = m; \ 325 (ifq)->ifq_len++; \ 326 } 327 #define IF_PREPEND(ifq, m) { \ 328 (m)->m_nextpkt = (ifq)->ifq_head; \ 329 if ((ifq)->ifq_tail == 0) \ 330 (ifq)->ifq_tail = (m); \ 331 (ifq)->ifq_head = (m); \ 332 (ifq)->ifq_len++; \ 333 } 334 #define IF_DEQUEUE(ifq, m) { \ 335 (m) = (ifq)->ifq_head; \ 336 if (m) { \ 337 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 338 (ifq)->ifq_tail = 0; \ 339 (m)->m_nextpkt = 0; \ 340 (ifq)->ifq_len--; \ 341 } \ 342 } 343 344 #define IFQ_MAXLEN 50 345 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 346 347 /* 348 * Structure defining statistics and other data kept regarding an address 349 * on a network interface. 350 */ 351 struct ifaddr_data { 352 int64_t ifad_inbytes; 353 int64_t ifad_outbytes; 354 }; 355 356 /* 357 * The ifaddr structure contains information about one address 358 * of an interface. They are maintained by the different address families, 359 * are allocated and attached when an address is set, and are linked 360 * together so all addresses for an interface can be located. 361 */ 362 struct ifaddr { 363 struct sockaddr *ifa_addr; /* address of interface */ 364 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 365 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 366 struct sockaddr *ifa_netmask; /* used to determine subnet */ 367 struct ifnet *ifa_ifp; /* back-pointer to interface */ 368 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 369 struct ifaddr_data ifa_data; /* statistics on the address */ 370 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 371 __P((int, struct rtentry *, struct sockaddr *)); 372 u_int ifa_flags; /* mostly rt_flags for cloning */ 373 int ifa_refcnt; /* count of references */ 374 int ifa_metric; /* cost of going out this interface */ 375 }; 376 #define IFA_ROUTE RTF_UP /* route installed */ 377 378 /* 379 * The prefix structure contains information about one prefix 380 * of an interface. They are maintained by the different address families, 381 * are allocated and attached when an prefix or an address is set, 382 * and are linked together so all prfefixes for an interface can be located. 383 */ 384 struct ifprefix { 385 struct sockaddr *ifpr_prefix; /* prefix of interface */ 386 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 387 struct ifprefix *ifpr_next; 388 u_char ifpr_plen; /* prefix length in bits */ 389 u_char ifpr_type; /* protocol dependent prefix type */ 390 }; 391 392 /* 393 * Message format for use in obtaining information about interfaces 394 * from sysctl and the routing socket. 395 */ 396 struct if_msghdr { 397 u_short ifm_msglen; /* to skip over non-understood messages */ 398 u_char ifm_version; /* future binary compatability */ 399 u_char ifm_type; /* message type */ 400 int ifm_addrs; /* like rtm_addrs */ 401 int ifm_flags; /* value of if_flags */ 402 u_short ifm_index; /* index for associated ifp */ 403 struct if_data ifm_data;/* statistics and other data about if */ 404 }; 405 406 #if defined(_KERNEL) && defined(COMPAT_14) 407 /* pre-1.5 if_msghdr (ifm_data changed) */ 408 struct if_msghdr14 { 409 u_short ifm_msglen; /* to skip over non-understood messages */ 410 u_char ifm_version; /* future binary compatability */ 411 u_char ifm_type; /* message type */ 412 int ifm_addrs; /* like rtm_addrs */ 413 int ifm_flags; /* value of if_flags */ 414 u_short ifm_index; /* index for associated ifp */ 415 struct if_data14 ifm_data; /* statistics and other data about if */ 416 }; 417 #endif /* _KERNEL && COMPAT_14 */ 418 419 /* 420 * Message format for use in obtaining information about interface addresses 421 * from sysctl and the routing socket. 422 */ 423 struct ifa_msghdr { 424 u_short ifam_msglen; /* to skip over non-understood messages */ 425 u_char ifam_version; /* future binary compatability */ 426 u_char ifam_type; /* message type */ 427 int ifam_addrs; /* like rtm_addrs */ 428 int ifam_flags; /* value of ifa_flags */ 429 u_short ifam_index; /* index for associated ifp */ 430 int ifam_metric; /* value of ifa_metric */ 431 }; 432 433 /* 434 * Message format announcing the arrival or departure of a network interface. 435 */ 436 struct if_announcemsghdr { 437 u_short ifan_msglen; /* to skip over non-understood messages */ 438 u_char ifan_version; /* future binary compatibility */ 439 u_char ifan_type; /* message type */ 440 u_short ifan_index; /* index for associated ifp */ 441 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 442 u_short ifan_what; /* what type of announcement */ 443 }; 444 445 #define IFAN_ARRIVAL 0 /* interface arrival */ 446 #define IFAN_DEPARTURE 1 /* interface departure */ 447 448 /* 449 * Interface request structure used for socket 450 * ioctl's. All interface ioctl's must have parameter 451 * definitions which begin with ifr_name. The 452 * remainder may be interface specific. 453 */ 454 struct ifreq { 455 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 456 union { 457 struct sockaddr ifru_addr; 458 struct sockaddr ifru_dstaddr; 459 struct sockaddr ifru_broadaddr; 460 short ifru_flags; 461 int ifru_metric; 462 int ifru_mtu; 463 u_int ifru_value; 464 caddr_t ifru_data; 465 } ifr_ifru; 466 #define ifr_addr ifr_ifru.ifru_addr /* address */ 467 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 468 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 469 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 470 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 471 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 472 #define ifr_value ifr_ifru.ifru_value /* generic value */ 473 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 474 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 475 }; 476 477 struct ifaliasreq { 478 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 479 struct sockaddr ifra_addr; 480 struct sockaddr ifra_dstaddr; 481 #define ifra_broadaddr ifra_dstaddr 482 struct sockaddr ifra_mask; 483 }; 484 485 struct ifmediareq { 486 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 487 int ifm_current; /* current media options */ 488 int ifm_mask; /* don't care mask */ 489 int ifm_status; /* media status */ 490 int ifm_active; /* active options */ 491 int ifm_count; /* # entries in ifm_ulist 492 array */ 493 int *ifm_ulist; /* media words */ 494 }; 495 496 497 struct ifdrv { 498 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 499 unsigned long ifd_cmd; 500 size_t ifd_len; 501 void *ifd_data; 502 }; 503 504 /* 505 * Structure used in SIOCGIFCONF request. 506 * Used to retrieve interface configuration 507 * for machine (useful for programs which 508 * must know all networks accessible). 509 */ 510 struct ifconf { 511 int ifc_len; /* size of associated buffer */ 512 union { 513 caddr_t ifcu_buf; 514 struct ifreq *ifcu_req; 515 } ifc_ifcu; 516 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 517 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 518 }; 519 520 /* 521 * Structure for SIOC[AGD]LIFADDR 522 */ 523 struct if_laddrreq { 524 char iflr_name[IFNAMSIZ]; 525 unsigned int flags; 526 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 527 unsigned int prefixlen; /* in/out */ 528 struct sockaddr_storage addr; /* in/out */ 529 struct sockaddr_storage dstaddr; /* out */ 530 }; 531 532 #include <net/if_arp.h> 533 534 #endif /* !_XOPEN_SOURCE */ 535 536 #ifdef _KERNEL 537 #ifdef IFAREF_DEBUG 538 #define IFAREF(ifa) \ 539 do { \ 540 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 541 (ifa), ++(ifa)->ifa_refcnt); \ 542 } while (0) 543 544 #define IFAFREE(ifa) \ 545 do { \ 546 if ((ifa)->ifa_refcnt <= 0) \ 547 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 548 __LINE__, (ifa)); \ 549 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 550 (ifa), --(ifa)->ifa_refcnt); \ 551 if ((ifa)->ifa_refcnt == 0) \ 552 ifafree(ifa); \ 553 } while (0) 554 #else 555 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 556 557 #ifdef DIAGNOSTIC 558 #define IFAFREE(ifa) \ 559 do { \ 560 if ((ifa)->ifa_refcnt <= 0) \ 561 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 562 __LINE__, (ifa)); \ 563 if (--(ifa)->ifa_refcnt == 0) \ 564 ifafree(ifa); \ 565 } while (0) 566 #else 567 #define IFAFREE(ifa) \ 568 do { \ 569 if (--(ifa)->ifa_refcnt == 0) \ 570 ifafree(ifa); \ 571 } while (0) 572 #endif /* DIAGNOSTIC */ 573 #endif /* IFAREF_DEBUG */ 574 575 struct ifnet_head ifnet; 576 extern struct ifnet **ifindex2ifnet; 577 #if 0 578 struct ifnet loif[]; 579 #endif 580 extern int if_index; 581 582 void ether_ifattach __P((struct ifnet *, const u_int8_t *)); 583 void ether_ifdetach __P((struct ifnet *)); 584 char *ether_sprintf __P((const u_char *)); 585 586 void if_attach __P((struct ifnet *)); 587 void if_deactivate __P((struct ifnet *)); 588 void if_detach __P((struct ifnet *)); 589 void if_down __P((struct ifnet *)); 590 void if_qflush __P((struct ifqueue *)); 591 void if_slowtimo __P((void *)); 592 void if_up __P((struct ifnet *)); 593 int ifconf __P((u_long, caddr_t)); 594 void ifinit __P((void)); 595 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 596 int ifpromisc __P((struct ifnet *, int)); 597 struct ifnet *ifunit __P((const char *)); 598 599 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 600 struct ifaddr *ifa_ifwithaf __P((int)); 601 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 602 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 603 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 604 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 605 struct sockaddr *)); 606 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 607 void ifafree __P((struct ifaddr *)); 608 void link_rtrequest __P((int, struct rtentry *, struct sockaddr *)); 609 610 void if_clone_attach __P((struct if_clone *)); 611 void if_clone_detach __P((struct if_clone *)); 612 613 int if_clone_create __P((const char *)); 614 int if_clone_destroy __P((const char *)); 615 616 int loioctl __P((struct ifnet *, u_long, caddr_t)); 617 void loopattach __P((int)); 618 int looutput __P((struct ifnet *, 619 struct mbuf *, struct sockaddr *, struct rtentry *)); 620 void lortrequest __P((int, struct rtentry *, struct sockaddr *)); 621 622 /* 623 * These are exported because they're an easy way to tell if 624 * an interface is going away without having to burn a flag. 625 */ 626 int if_nulloutput __P((struct ifnet *, struct mbuf *, 627 struct sockaddr *, struct rtentry *)); 628 void if_nullinput __P((struct ifnet *, struct mbuf *)); 629 void if_nullstart __P((struct ifnet *)); 630 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 631 int if_nullreset __P((struct ifnet *)); 632 void if_nullwatchdog __P((struct ifnet *)); 633 void if_nulldrain __P((struct ifnet *)); 634 #else 635 struct if_nameindex { 636 unsigned int if_index; /* 1, 2, ... */ 637 char *if_name; /* null terminated name: "le0", ... */ 638 }; 639 640 #include <sys/cdefs.h> 641 __BEGIN_DECLS 642 unsigned int if_nametoindex __P((const char *)); 643 char * if_indextoname __P((unsigned int, char *)); 644 struct if_nameindex * if_nameindex __P((void)); 645 void if_freenameindex __P((struct if_nameindex *)); 646 __END_DECLS 647 #endif /* _KERNEL */ 648 #endif /* !_NET_IF_H_ */ 649
Indexes created Tue Sep 23 14:10:03 GMT 2025