if.h revision 1.52
1 /* $NetBSD: if.h,v 1.52 2000/07/04 19:09:17 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 * Structure describing a `cloning' interface. 121 */ 122 struct if_clone { 123 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 124 const char *ifc_name; /* name of device, e.g. `gif' */ 125 size_t ifc_namelen; /* length of name */ 126 127 int (*ifc_create)(struct if_clone *, int); 128 void (*ifc_destroy)(struct ifnet *); 129 }; 130 131 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 132 { { 0 }, name, sizeof(name) - 1, create, destroy } 133 134 /* 135 * Structure defining statistics and other data kept regarding a network 136 * interface. 137 */ 138 struct if_data { 139 /* generic interface information */ 140 u_char ifi_type; /* ethernet, tokenring, etc. */ 141 u_char ifi_addrlen; /* media address length */ 142 u_char ifi_hdrlen; /* media header length */ 143 int ifi_link_state; /* current link state */ 144 u_quad_t ifi_mtu; /* maximum transmission unit */ 145 u_quad_t ifi_metric; /* routing metric (external only) */ 146 u_quad_t ifi_baudrate; /* linespeed */ 147 /* volatile statistics */ 148 u_quad_t ifi_ipackets; /* packets received on interface */ 149 u_quad_t ifi_ierrors; /* input errors on interface */ 150 u_quad_t ifi_opackets; /* packets sent on interface */ 151 u_quad_t ifi_oerrors; /* output errors on interface */ 152 u_quad_t ifi_collisions; /* collisions on csma interfaces */ 153 u_quad_t ifi_ibytes; /* total number of octets received */ 154 u_quad_t ifi_obytes; /* total number of octets sent */ 155 u_quad_t ifi_imcasts; /* packets received via multicast */ 156 u_quad_t ifi_omcasts; /* packets sent via multicast */ 157 u_quad_t ifi_iqdrops; /* dropped on input, this interface */ 158 u_quad_t ifi_noproto; /* destined for unsupported protocol */ 159 struct timeval ifi_lastchange; /* last updated */ 160 }; 161 162 /* 163 * Values for if_link_state. 164 */ 165 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 166 #define LINK_STATE_DOWN 1 /* link is down */ 167 #define LINK_STATE_UP 2 /* link is up */ 168 169 #if defined(_KERNEL) && defined(COMPAT_14) 170 /* Pre-1.5 if_data struct */ 171 struct if_data14 { 172 /* generic interface information */ 173 u_char ifi_type; /* ethernet, tokenring, etc. */ 174 u_char ifi_addrlen; /* media address length */ 175 u_char ifi_hdrlen; /* media header length */ 176 u_long ifi_mtu; /* maximum transmission unit */ 177 u_long ifi_metric; /* routing metric (external only) */ 178 u_long ifi_baudrate; /* linespeed */ 179 /* volatile statistics */ 180 u_long ifi_ipackets; /* packets received on interface */ 181 u_long ifi_ierrors; /* input errors on interface */ 182 u_long ifi_opackets; /* packets sent on interface */ 183 u_long ifi_oerrors; /* output errors on interface */ 184 u_long ifi_collisions; /* collisions on csma interfaces */ 185 u_long ifi_ibytes; /* total number of octets received */ 186 u_long ifi_obytes; /* total number of octets sent */ 187 u_long ifi_imcasts; /* packets received via multicast */ 188 u_long ifi_omcasts; /* packets sent via multicast */ 189 u_long ifi_iqdrops; /* dropped on input, this interface */ 190 u_long ifi_noproto; /* destined for unsupported protocol */ 191 struct timeval ifi_lastchange; /* last updated */ 192 }; 193 #endif /* _KERNEL && COMPAT_14 */ 194 195 /* 196 * Structure defining a queue for a network interface. 197 * 198 * (Would like to call this struct ``if'', but C isn't PL/1.) 199 */ 200 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 201 202 /* 203 * Length of interface external name, including terminating '\0'. 204 * Note: this is the same size as a generic device's external name. 205 */ 206 #define IFNAMSIZ 16 207 #define IF_NAMESIZE IFNAMSIZ 208 209 struct ifnet { /* and the entries */ 210 void *if_softc; /* lower-level data for this if */ 211 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 212 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 213 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 214 int if_pcount; /* number of promiscuous listeners */ 215 caddr_t if_bpf; /* packet filter structure */ 216 u_short if_index; /* numeric abbreviation for this if */ 217 short if_timer; /* time 'til if_watchdog called */ 218 short if_flags; /* up/down, broadcast, etc. */ 219 short if__pad1; /* be nice to m68k ports */ 220 struct if_data if_data; /* statistics and other data about if */ 221 /* 222 * Procedure handles. If you add more of these, don't forget the 223 * corresponding NULL stub in if.c. 224 */ 225 int (*if_output) /* output routine (enqueue) */ 226 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 227 struct rtentry *)); 228 void (*if_input) /* input routine (from h/w driver) */ 229 __P((struct ifnet *, struct mbuf *)); 230 void (*if_start) /* initiate output routine */ 231 __P((struct ifnet *)); 232 int (*if_ioctl) /* ioctl routine */ 233 __P((struct ifnet *, u_long, caddr_t)); 234 int (*if_reset) /* XXX bus reset routine */ 235 __P((struct ifnet *)); 236 void (*if_watchdog) /* timer routine */ 237 __P((struct ifnet *)); 238 void (*if_drain) /* routine to release resources */ 239 __P((struct ifnet *)); 240 struct ifqueue { 241 struct mbuf *ifq_head; 242 struct mbuf *ifq_tail; 243 int ifq_len; 244 int ifq_maxlen; 245 int ifq_drops; 246 } if_snd; /* output queue */ 247 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 248 u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 249 struct ifprefix *if_prefixlist; /* linked list of prefixes per if */ 250 }; 251 #define if_mtu if_data.ifi_mtu 252 #define if_type if_data.ifi_type 253 #define if_addrlen if_data.ifi_addrlen 254 #define if_hdrlen if_data.ifi_hdrlen 255 #define if_metric if_data.ifi_metric 256 #define if_link_state if_data.ifi_link_state 257 #define if_baudrate if_data.ifi_baudrate 258 #define if_ipackets if_data.ifi_ipackets 259 #define if_ierrors if_data.ifi_ierrors 260 #define if_opackets if_data.ifi_opackets 261 #define if_oerrors if_data.ifi_oerrors 262 #define if_collisions if_data.ifi_collisions 263 #define if_ibytes if_data.ifi_ibytes 264 #define if_obytes if_data.ifi_obytes 265 #define if_imcasts if_data.ifi_imcasts 266 #define if_omcasts if_data.ifi_omcasts 267 #define if_iqdrops if_data.ifi_iqdrops 268 #define if_noproto if_data.ifi_noproto 269 #define if_lastchange if_data.ifi_lastchange 270 271 #define IFF_UP 0x1 /* interface is up */ 272 #define IFF_BROADCAST 0x2 /* broadcast address valid */ 273 #define IFF_DEBUG 0x4 /* turn on debugging */ 274 #define IFF_LOOPBACK 0x8 /* is a loopback net */ 275 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 276 #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ 277 #define IFF_RUNNING 0x40 /* resources allocated */ 278 #define IFF_NOARP 0x80 /* no address resolution protocol */ 279 #define IFF_PROMISC 0x100 /* receive all packets */ 280 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 281 #define IFF_OACTIVE 0x400 /* transmission in progress */ 282 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 283 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 284 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 285 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 286 #define IFF_MULTICAST 0x8000 /* supports multicast */ 287 288 /* flags set internally only: */ 289 #define IFF_CANTCHANGE \ 290 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 291 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 292 293 /* 294 * Some convenience macros used for setting ifi_baudrate. 295 * XXX 1000 vs. 1024? --thorpej (at) netbsd.org 296 */ 297 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 298 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 299 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 300 301 /* 302 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 303 * input routines have queues of messages stored on ifqueue structures 304 * (defined above). Entries are added to and deleted from these structures 305 * by these macros, which should be called with ipl raised to splimp(). 306 */ 307 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 308 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 309 #define IF_ENQUEUE(ifq, m) { \ 310 (m)->m_nextpkt = 0; \ 311 if ((ifq)->ifq_tail == 0) \ 312 (ifq)->ifq_head = m; \ 313 else \ 314 (ifq)->ifq_tail->m_nextpkt = m; \ 315 (ifq)->ifq_tail = m; \ 316 (ifq)->ifq_len++; \ 317 } 318 #define IF_PREPEND(ifq, m) { \ 319 (m)->m_nextpkt = (ifq)->ifq_head; \ 320 if ((ifq)->ifq_tail == 0) \ 321 (ifq)->ifq_tail = (m); \ 322 (ifq)->ifq_head = (m); \ 323 (ifq)->ifq_len++; \ 324 } 325 #define IF_DEQUEUE(ifq, m) { \ 326 (m) = (ifq)->ifq_head; \ 327 if (m) { \ 328 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 329 (ifq)->ifq_tail = 0; \ 330 (m)->m_nextpkt = 0; \ 331 (ifq)->ifq_len--; \ 332 } \ 333 } 334 335 #define IFQ_MAXLEN 50 336 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 337 338 /* 339 * Structure defining statistics and other data kept regarding an address 340 * on a network interface. 341 */ 342 struct ifaddr_data { 343 int64_t ifad_inbytes; 344 int64_t ifad_outbytes; 345 }; 346 347 /* 348 * The ifaddr structure contains information about one address 349 * of an interface. They are maintained by the different address families, 350 * are allocated and attached when an address is set, and are linked 351 * together so all addresses for an interface can be located. 352 */ 353 struct ifaddr { 354 struct sockaddr *ifa_addr; /* address of interface */ 355 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 356 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 357 struct sockaddr *ifa_netmask; /* used to determine subnet */ 358 struct ifnet *ifa_ifp; /* back-pointer to interface */ 359 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 360 struct ifaddr_data ifa_data; /* statistics on the address */ 361 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 362 __P((int, struct rtentry *, struct sockaddr *)); 363 u_int ifa_flags; /* mostly rt_flags for cloning */ 364 int ifa_refcnt; /* count of references */ 365 int ifa_metric; /* cost of going out this interface */ 366 }; 367 #define IFA_ROUTE RTF_UP /* route installed */ 368 369 /* 370 * The prefix structure contains information about one prefix 371 * of an interface. They are maintained by the different address families, 372 * are allocated and attached when an prefix or an address is set, 373 * and are linked together so all prfefixes for an interface can be located. 374 */ 375 struct ifprefix { 376 struct sockaddr *ifpr_prefix; /* prefix of interface */ 377 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 378 struct ifprefix *ifpr_next; 379 u_char ifpr_plen; /* prefix length in bits */ 380 u_char ifpr_type; /* protocol dependent prefix type */ 381 }; 382 383 /* 384 * Message format for use in obtaining information about interfaces 385 * from sysctl and the routing socket. 386 */ 387 struct if_msghdr { 388 u_short ifm_msglen; /* to skip over non-understood messages */ 389 u_char ifm_version; /* future binary compatability */ 390 u_char ifm_type; /* message type */ 391 int ifm_addrs; /* like rtm_addrs */ 392 int ifm_flags; /* value of if_flags */ 393 u_short ifm_index; /* index for associated ifp */ 394 struct if_data ifm_data;/* statistics and other data about if */ 395 }; 396 397 #if defined(_KERNEL) && defined(COMPAT_14) 398 /* pre-1.5 if_msghdr (ifm_data changed) */ 399 struct if_msghdr14 { 400 u_short ifm_msglen; /* to skip over non-understood messages */ 401 u_char ifm_version; /* future binary compatability */ 402 u_char ifm_type; /* message type */ 403 int ifm_addrs; /* like rtm_addrs */ 404 int ifm_flags; /* value of if_flags */ 405 u_short ifm_index; /* index for associated ifp */ 406 struct if_data14 ifm_data; /* statistics and other data about if */ 407 }; 408 #endif /* _KERNEL && COMPAT_14 */ 409 410 /* 411 * Message format for use in obtaining information about interface addresses 412 * from sysctl and the routing socket. 413 */ 414 struct ifa_msghdr { 415 u_short ifam_msglen; /* to skip over non-understood messages */ 416 u_char ifam_version; /* future binary compatability */ 417 u_char ifam_type; /* message type */ 418 int ifam_addrs; /* like rtm_addrs */ 419 int ifam_flags; /* value of ifa_flags */ 420 u_short ifam_index; /* index for associated ifp */ 421 int ifam_metric; /* value of ifa_metric */ 422 }; 423 424 /* 425 * Message format announcing the arrival or departure of a network interface. 426 */ 427 struct if_announcemsghdr { 428 u_short ifan_msglen; /* to skip over non-understood messages */ 429 u_char ifan_version; /* future binary compatibility */ 430 u_char ifan_type; /* message type */ 431 u_short ifan_index; /* index for associated ifp */ 432 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 433 u_short ifan_what; /* what type of announcement */ 434 }; 435 436 #define IFAN_ARRIVAL 0 /* interface arrival */ 437 #define IFAN_DEPARTURE 1 /* interface departure */ 438 439 /* 440 * Interface request structure used for socket 441 * ioctl's. All interface ioctl's must have parameter 442 * definitions which begin with ifr_name. The 443 * remainder may be interface specific. 444 */ 445 struct ifreq { 446 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 447 union { 448 struct sockaddr ifru_addr; 449 struct sockaddr ifru_dstaddr; 450 struct sockaddr ifru_broadaddr; 451 short ifru_flags; 452 int ifru_metric; 453 int ifru_mtu; 454 u_int ifru_value; 455 caddr_t ifru_data; 456 } ifr_ifru; 457 #define ifr_addr ifr_ifru.ifru_addr /* address */ 458 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 459 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 460 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 461 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 462 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 463 #define ifr_value ifr_ifru.ifru_value /* generic value */ 464 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 465 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 466 }; 467 468 struct ifaliasreq { 469 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 470 struct sockaddr ifra_addr; 471 struct sockaddr ifra_dstaddr; 472 #define ifra_broadaddr ifra_dstaddr 473 struct sockaddr ifra_mask; 474 }; 475 476 struct ifmediareq { 477 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 478 int ifm_current; /* current media options */ 479 int ifm_mask; /* don't care mask */ 480 int ifm_status; /* media status */ 481 int ifm_active; /* active options */ 482 int ifm_count; /* # entries in ifm_ulist 483 array */ 484 int *ifm_ulist; /* media words */ 485 }; 486 487 488 struct ifdrv { 489 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 490 unsigned long ifd_cmd; 491 size_t ifd_len; 492 void *ifd_data; 493 }; 494 495 /* 496 * Structure used in SIOCGIFCONF request. 497 * Used to retrieve interface configuration 498 * for machine (useful for programs which 499 * must know all networks accessible). 500 */ 501 struct ifconf { 502 int ifc_len; /* size of associated buffer */ 503 union { 504 caddr_t ifcu_buf; 505 struct ifreq *ifcu_req; 506 } ifc_ifcu; 507 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 508 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 509 }; 510 511 /* 512 * Structure for SIOC[AGD]LIFADDR 513 */ 514 struct if_laddrreq { 515 char iflr_name[IFNAMSIZ]; 516 unsigned int flags; 517 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 518 unsigned int prefixlen; /* in/out */ 519 struct sockaddr_storage addr; /* in/out */ 520 struct sockaddr_storage dstaddr; /* out */ 521 }; 522 523 #include <net/if_arp.h> 524 525 #endif /* !_XOPEN_SOURCE */ 526 527 #ifdef _KERNEL 528 #ifdef IFAREF_DEBUG 529 #define IFAREF(ifa) \ 530 do { \ 531 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 532 (ifa), ++(ifa)->ifa_refcnt); \ 533 } while (0) 534 535 #define IFAFREE(ifa) \ 536 do { \ 537 if ((ifa)->ifa_refcnt <= 0) \ 538 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 539 __LINE__, (ifa)); \ 540 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 541 (ifa), --(ifa)->ifa_refcnt); \ 542 if ((ifa)->ifa_refcnt == 0) \ 543 ifafree(ifa); \ 544 } while (0) 545 #else 546 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 547 548 #ifdef DIAGNOSTIC 549 #define IFAFREE(ifa) \ 550 do { \ 551 if ((ifa)->ifa_refcnt <= 0) \ 552 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 553 __LINE__, (ifa)); \ 554 if (--(ifa)->ifa_refcnt == 0) \ 555 ifafree(ifa); \ 556 } while (0) 557 #else 558 #define IFAFREE(ifa) \ 559 do { \ 560 if (--(ifa)->ifa_refcnt == 0) \ 561 ifafree(ifa); \ 562 } while (0) 563 #endif /* DIAGNOSTIC */ 564 #endif /* IFAREF_DEBUG */ 565 566 struct ifnet_head ifnet; 567 extern struct ifnet **ifindex2ifnet; 568 #if 0 569 struct ifnet loif[]; 570 #endif 571 extern int if_index; 572 573 void ether_ifattach __P((struct ifnet *, const u_int8_t *)); 574 void ether_ifdetach __P((struct ifnet *)); 575 char *ether_sprintf __P((const u_char *)); 576 577 void if_attach __P((struct ifnet *)); 578 void if_deactivate __P((struct ifnet *)); 579 void if_detach __P((struct ifnet *)); 580 void if_down __P((struct ifnet *)); 581 void if_qflush __P((struct ifqueue *)); 582 void if_slowtimo __P((void *)); 583 void if_up __P((struct ifnet *)); 584 int ifconf __P((u_long, caddr_t)); 585 void ifinit __P((void)); 586 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 587 int ifpromisc __P((struct ifnet *, int)); 588 struct ifnet *ifunit __P((const char *)); 589 590 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 591 struct ifaddr *ifa_ifwithaf __P((int)); 592 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 593 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 594 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 595 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 596 struct sockaddr *)); 597 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 598 void ifafree __P((struct ifaddr *)); 599 void link_rtrequest __P((int, struct rtentry *, struct sockaddr *)); 600 601 void if_clone_attach __P((struct if_clone *)); 602 void if_clone_detach __P((struct if_clone *)); 603 604 int if_clone_create __P((const char *)); 605 int if_clone_destroy __P((const char *)); 606 607 int loioctl __P((struct ifnet *, u_long, caddr_t)); 608 void loopattach __P((int)); 609 int looutput __P((struct ifnet *, 610 struct mbuf *, struct sockaddr *, struct rtentry *)); 611 void lortrequest __P((int, struct rtentry *, struct sockaddr *)); 612 613 /* 614 * These are exported because they're an easy way to tell if 615 * an interface is going away without having to burn a flag. 616 */ 617 int if_nulloutput __P((struct ifnet *, struct mbuf *, 618 struct sockaddr *, struct rtentry *)); 619 void if_nullinput __P((struct ifnet *, struct mbuf *)); 620 void if_nullstart __P((struct ifnet *)); 621 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 622 int if_nullreset __P((struct ifnet *)); 623 void if_nullwatchdog __P((struct ifnet *)); 624 void if_nulldrain __P((struct ifnet *)); 625 #else 626 struct if_nameindex { 627 unsigned int if_index; /* 1, 2, ... */ 628 char *if_name; /* null terminated name: "le0", ... */ 629 }; 630 631 #include <sys/cdefs.h> 632 __BEGIN_DECLS 633 unsigned int if_nametoindex __P((const char *)); 634 char * if_indextoname __P((unsigned int, char *)); 635 struct if_nameindex * if_nameindex __P((void)); 636 void if_freenameindex __P((struct if_nameindex *)); 637 __END_DECLS 638 #endif /* _KERNEL */ 639 #endif /* !_NET_IF_H_ */ 640
Indexes created Sun Sep 21 20:09:37 GMT 2025