if.h revision 1.45
1 /* $NetBSD: if.h,v 1.45 2000/03/06 18:55:10 kleink 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; 117 118 /* 119 * Structure defining statistics and other data kept regarding a network 120 * interface. 121 */ 122 struct if_data { 123 /* generic interface information */ 124 u_char ifi_type; /* ethernet, tokenring, etc. */ 125 u_char ifi_addrlen; /* media address length */ 126 u_char ifi_hdrlen; /* media header length */ 127 u_quad_t ifi_mtu; /* maximum transmission unit */ 128 u_quad_t ifi_metric; /* routing metric (external only) */ 129 u_quad_t ifi_baudrate; /* linespeed */ 130 /* volatile statistics */ 131 u_quad_t ifi_ipackets; /* packets received on interface */ 132 u_quad_t ifi_ierrors; /* input errors on interface */ 133 u_quad_t ifi_opackets; /* packets sent on interface */ 134 u_quad_t ifi_oerrors; /* output errors on interface */ 135 u_quad_t ifi_collisions; /* collisions on csma interfaces */ 136 u_quad_t ifi_ibytes; /* total number of octets received */ 137 u_quad_t ifi_obytes; /* total number of octets sent */ 138 u_quad_t ifi_imcasts; /* packets received via multicast */ 139 u_quad_t ifi_omcasts; /* packets sent via multicast */ 140 u_quad_t ifi_iqdrops; /* dropped on input, this interface */ 141 u_quad_t ifi_noproto; /* destined for unsupported protocol */ 142 struct timeval ifi_lastchange; /* last updated */ 143 }; 144 145 #if defined(_KERNEL) && defined(COMPAT_14) 146 /* Pre-1.5 if_data struct */ 147 struct if_data14 { 148 /* generic interface information */ 149 u_char ifi_type; /* ethernet, tokenring, etc. */ 150 u_char ifi_addrlen; /* media address length */ 151 u_char ifi_hdrlen; /* media header length */ 152 u_long ifi_mtu; /* maximum transmission unit */ 153 u_long ifi_metric; /* routing metric (external only) */ 154 u_long ifi_baudrate; /* linespeed */ 155 /* volatile statistics */ 156 u_long ifi_ipackets; /* packets received on interface */ 157 u_long ifi_ierrors; /* input errors on interface */ 158 u_long ifi_opackets; /* packets sent on interface */ 159 u_long ifi_oerrors; /* output errors on interface */ 160 u_long ifi_collisions; /* collisions on csma interfaces */ 161 u_long ifi_ibytes; /* total number of octets received */ 162 u_long ifi_obytes; /* total number of octets sent */ 163 u_long ifi_imcasts; /* packets received via multicast */ 164 u_long ifi_omcasts; /* packets sent via multicast */ 165 u_long ifi_iqdrops; /* dropped on input, this interface */ 166 u_long ifi_noproto; /* destined for unsupported protocol */ 167 struct timeval ifi_lastchange; /* last updated */ 168 }; 169 #endif /* _KERNEL && COMPAT_14 */ 170 171 /* 172 * Structure defining a queue for a network interface. 173 * 174 * (Would like to call this struct ``if'', but C isn't PL/1.) 175 */ 176 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 177 178 /* 179 * Length of interface external name, including terminating '\0'. 180 * Note: this is the same size as a generic device's external name. 181 */ 182 #define IFNAMSIZ 16 183 #define IF_NAMESIZE IFNAMSIZ 184 185 struct ifnet { /* and the entries */ 186 void *if_softc; /* lower-level data for this if */ 187 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 188 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 189 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 190 int if_pcount; /* number of promiscuous listeners */ 191 caddr_t if_bpf; /* packet filter structure */ 192 u_short if_index; /* numeric abbreviation for this if */ 193 short if_timer; /* time 'til if_watchdog called */ 194 short if_flags; /* up/down, broadcast, etc. */ 195 short if__pad1; /* be nice to m68k ports */ 196 struct if_data if_data; /* statistics and other data about if */ 197 /* 198 * Procedure handles. If you add more of these, don't forget the 199 * corresponding NULL stub in if.c. 200 */ 201 int (*if_output) /* output routine (enqueue) */ 202 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 203 struct rtentry *)); 204 void (*if_input) /* input routine (from h/w driver) */ 205 __P((struct ifnet *, struct mbuf *)); 206 void (*if_start) /* initiate output routine */ 207 __P((struct ifnet *)); 208 int (*if_ioctl) /* ioctl routine */ 209 __P((struct ifnet *, u_long, caddr_t)); 210 int (*if_reset) /* XXX bus reset routine */ 211 __P((struct ifnet *)); 212 void (*if_watchdog) /* timer routine */ 213 __P((struct ifnet *)); 214 void (*if_drain) /* routine to release resources */ 215 __P((struct ifnet *)); 216 struct ifqueue { 217 struct mbuf *ifq_head; 218 struct mbuf *ifq_tail; 219 int ifq_len; 220 int ifq_maxlen; 221 int ifq_drops; 222 } if_snd; /* output queue */ 223 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 224 u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 225 struct ifprefix *if_prefixlist; /* linked list of prefixes per if */ 226 }; 227 #define if_mtu if_data.ifi_mtu 228 #define if_type if_data.ifi_type 229 #define if_addrlen if_data.ifi_addrlen 230 #define if_hdrlen if_data.ifi_hdrlen 231 #define if_metric if_data.ifi_metric 232 #define if_baudrate if_data.ifi_baudrate 233 #define if_ipackets if_data.ifi_ipackets 234 #define if_ierrors if_data.ifi_ierrors 235 #define if_opackets if_data.ifi_opackets 236 #define if_oerrors if_data.ifi_oerrors 237 #define if_collisions if_data.ifi_collisions 238 #define if_ibytes if_data.ifi_ibytes 239 #define if_obytes if_data.ifi_obytes 240 #define if_imcasts if_data.ifi_imcasts 241 #define if_omcasts if_data.ifi_omcasts 242 #define if_iqdrops if_data.ifi_iqdrops 243 #define if_noproto if_data.ifi_noproto 244 #define if_lastchange if_data.ifi_lastchange 245 246 #define IFF_UP 0x1 /* interface is up */ 247 #define IFF_BROADCAST 0x2 /* broadcast address valid */ 248 #define IFF_DEBUG 0x4 /* turn on debugging */ 249 #define IFF_LOOPBACK 0x8 /* is a loopback net */ 250 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 251 #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ 252 #define IFF_RUNNING 0x40 /* resources allocated */ 253 #define IFF_NOARP 0x80 /* no address resolution protocol */ 254 #define IFF_PROMISC 0x100 /* receive all packets */ 255 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 256 #define IFF_OACTIVE 0x400 /* transmission in progress */ 257 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 258 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 259 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 260 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 261 #define IFF_MULTICAST 0x8000 /* supports multicast */ 262 263 /* flags set internally only: */ 264 #define IFF_CANTCHANGE \ 265 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 266 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) 267 268 /* 269 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 270 * input routines have queues of messages stored on ifqueue structures 271 * (defined above). Entries are added to and deleted from these structures 272 * by these macros, which should be called with ipl raised to splimp(). 273 */ 274 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 275 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 276 #define IF_ENQUEUE(ifq, m) { \ 277 (m)->m_nextpkt = 0; \ 278 if ((ifq)->ifq_tail == 0) \ 279 (ifq)->ifq_head = m; \ 280 else \ 281 (ifq)->ifq_tail->m_nextpkt = m; \ 282 (ifq)->ifq_tail = m; \ 283 (ifq)->ifq_len++; \ 284 } 285 #define IF_PREPEND(ifq, m) { \ 286 (m)->m_nextpkt = (ifq)->ifq_head; \ 287 if ((ifq)->ifq_tail == 0) \ 288 (ifq)->ifq_tail = (m); \ 289 (ifq)->ifq_head = (m); \ 290 (ifq)->ifq_len++; \ 291 } 292 #define IF_DEQUEUE(ifq, m) { \ 293 (m) = (ifq)->ifq_head; \ 294 if (m) { \ 295 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 296 (ifq)->ifq_tail = 0; \ 297 (m)->m_nextpkt = 0; \ 298 (ifq)->ifq_len--; \ 299 } \ 300 } 301 302 #define IFQ_MAXLEN 50 303 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 304 305 /* 306 * Structure defining statistics and other data kept regarding an address 307 * on a network interface. 308 */ 309 struct ifaddr_data { 310 int64_t ifad_inbytes; 311 int64_t ifad_outbytes; 312 }; 313 314 /* 315 * The ifaddr structure contains information about one address 316 * of an interface. They are maintained by the different address families, 317 * are allocated and attached when an address is set, and are linked 318 * together so all addresses for an interface can be located. 319 */ 320 struct ifaddr { 321 struct sockaddr *ifa_addr; /* address of interface */ 322 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 323 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 324 struct sockaddr *ifa_netmask; /* used to determine subnet */ 325 struct ifnet *ifa_ifp; /* back-pointer to interface */ 326 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 327 struct ifaddr_data ifa_data; /* statistics on the address */ 328 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 329 __P((int, struct rtentry *, struct sockaddr *)); 330 u_int ifa_flags; /* mostly rt_flags for cloning */ 331 int ifa_refcnt; /* count of references */ 332 int ifa_metric; /* cost of going out this interface */ 333 }; 334 #define IFA_ROUTE RTF_UP /* route installed */ 335 336 /* 337 * The prefix structure contains information about one prefix 338 * of an interface. They are maintained by the different address families, 339 * are allocated and attached when an prefix or an address is set, 340 * and are linked together so all prfefixes for an interface can be located. 341 */ 342 struct ifprefix { 343 struct sockaddr *ifpr_prefix; /* prefix of interface */ 344 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 345 struct ifprefix *ifpr_next; 346 u_char ifpr_plen; /* prefix length in bits */ 347 u_char ifpr_type; /* protocol dependent prefix type */ 348 }; 349 350 /* 351 * Message format for use in obtaining information about interfaces 352 * from sysctl and the routing socket. 353 */ 354 struct if_msghdr { 355 u_short ifm_msglen; /* to skip over non-understood messages */ 356 u_char ifm_version; /* future binary compatability */ 357 u_char ifm_type; /* message type */ 358 int ifm_addrs; /* like rtm_addrs */ 359 int ifm_flags; /* value of if_flags */ 360 u_short ifm_index; /* index for associated ifp */ 361 struct if_data ifm_data;/* statistics and other data about if */ 362 }; 363 364 #if defined(_KERNEL) && defined(COMPAT_14) 365 /* pre-1.5 if_msghdr (ifm_data changed) */ 366 struct if_msghdr14 { 367 u_short ifm_msglen; /* to skip over non-understood messages */ 368 u_char ifm_version; /* future binary compatability */ 369 u_char ifm_type; /* message type */ 370 int ifm_addrs; /* like rtm_addrs */ 371 int ifm_flags; /* value of if_flags */ 372 u_short ifm_index; /* index for associated ifp */ 373 struct if_data14 ifm_data; /* statistics and other data about if */ 374 }; 375 #endif /* _KERNEL && COMPAT_14 */ 376 377 /* 378 * Message format for use in obtaining information about interface addresses 379 * from sysctl and the routing socket. 380 */ 381 struct ifa_msghdr { 382 u_short ifam_msglen; /* to skip over non-understood messages */ 383 u_char ifam_version; /* future binary compatability */ 384 u_char ifam_type; /* message type */ 385 int ifam_addrs; /* like rtm_addrs */ 386 int ifam_flags; /* value of ifa_flags */ 387 u_short ifam_index; /* index for associated ifp */ 388 int ifam_metric; /* value of ifa_metric */ 389 }; 390 391 /* 392 * Interface request structure used for socket 393 * ioctl's. All interface ioctl's must have parameter 394 * definitions which begin with ifr_name. The 395 * remainder may be interface specific. 396 */ 397 struct ifreq { 398 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 399 union { 400 struct sockaddr ifru_addr; 401 struct sockaddr ifru_dstaddr; 402 struct sockaddr ifru_broadaddr; 403 short ifru_flags; 404 int ifru_metric; 405 int ifru_mtu; 406 u_int ifru_value; 407 caddr_t ifru_data; 408 } ifr_ifru; 409 #define ifr_addr ifr_ifru.ifru_addr /* address */ 410 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 411 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 412 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 413 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 414 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 415 #define ifr_value ifr_ifru.ifru_value /* generic value */ 416 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 417 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 418 }; 419 420 struct ifaliasreq { 421 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 422 struct sockaddr ifra_addr; 423 struct sockaddr ifra_dstaddr; 424 #define ifra_broadaddr ifra_dstaddr 425 struct sockaddr ifra_mask; 426 }; 427 428 struct ifmediareq { 429 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 430 int ifm_current; /* current media options */ 431 int ifm_mask; /* don't care mask */ 432 int ifm_status; /* media status */ 433 int ifm_active; /* active options */ 434 int ifm_count; /* # entries in ifm_ulist 435 array */ 436 int *ifm_ulist; /* media words */ 437 }; 438 439 440 struct ifdrv { 441 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 442 unsigned long ifd_cmd; 443 size_t ifd_len; 444 void *ifd_data; 445 }; 446 447 /* 448 * Structure used in SIOCGIFCONF request. 449 * Used to retrieve interface configuration 450 * for machine (useful for programs which 451 * must know all networks accessible). 452 */ 453 struct ifconf { 454 int ifc_len; /* size of associated buffer */ 455 union { 456 caddr_t ifcu_buf; 457 struct ifreq *ifcu_req; 458 } ifc_ifcu; 459 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 460 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 461 }; 462 463 /* 464 * Structure for SIOC[AGD]LIFADDR 465 */ 466 struct if_laddrreq { 467 char iflr_name[IFNAMSIZ]; 468 unsigned int flags; 469 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 470 unsigned int prefixlen; /* in/out */ 471 struct sockaddr_storage addr; /* in/out */ 472 struct sockaddr_storage dstaddr; /* out */ 473 }; 474 475 #include <net/if_arp.h> 476 477 #endif /* !_XOPEN_SOURCE */ 478 479 #ifdef _KERNEL 480 #ifdef IFAREF_DEBUG 481 #define IFAREF(ifa) \ 482 do { \ 483 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 484 (ifa), ++(ifa)->ifa_refcnt); \ 485 } while (0) 486 487 #define IFAFREE(ifa) \ 488 do { \ 489 if ((ifa)->ifa_refcnt <= 0) \ 490 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 491 __LINE__, (ifa)); \ 492 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 493 (ifa), --(ifa)->ifa_refcnt); \ 494 if ((ifa)->ifa_refcnt == 0) \ 495 ifafree(ifa); \ 496 } while (0) 497 #else 498 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 499 500 #ifdef DIAGNOSTIC 501 #define IFAFREE(ifa) \ 502 do { \ 503 if ((ifa)->ifa_refcnt <= 0) \ 504 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 505 __LINE__, (ifa)); \ 506 if (--(ifa)->ifa_refcnt == 0) \ 507 ifafree(ifa); \ 508 } while (0) 509 #else 510 #define IFAFREE(ifa) \ 511 do { \ 512 if (--(ifa)->ifa_refcnt == 0) \ 513 ifafree(ifa); \ 514 } while (0) 515 #endif /* DIAGNOSTIC */ 516 #endif /* IFAREF_DEBUG */ 517 518 struct ifnet_head ifnet; 519 struct ifnet **ifindex2ifnet; 520 #if 0 521 struct ifnet loif[]; 522 #endif 523 int if_index; 524 525 void ether_ifattach __P((struct ifnet *, const u_int8_t *)); 526 void ether_ifdetach __P((struct ifnet *)); 527 char *ether_sprintf __P((const u_char *)); 528 529 void if_attach __P((struct ifnet *)); 530 void if_deactivate __P((struct ifnet *)); 531 void if_detach __P((struct ifnet *)); 532 void if_down __P((struct ifnet *)); 533 void if_qflush __P((struct ifqueue *)); 534 void if_slowtimo __P((void *)); 535 void if_up __P((struct ifnet *)); 536 int ifconf __P((u_long, caddr_t)); 537 void ifinit __P((void)); 538 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 539 int ifpromisc __P((struct ifnet *, int)); 540 struct ifnet *ifunit __P((const char *)); 541 struct ifnet *if_withname __P((struct sockaddr *)); 542 543 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 544 struct ifaddr *ifa_ifwithaf __P((int)); 545 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 546 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 547 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 548 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 549 struct sockaddr *)); 550 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 551 void ifafree __P((struct ifaddr *)); 552 void link_rtrequest __P((int, struct rtentry *, struct sockaddr *)); 553 554 int loioctl __P((struct ifnet *, u_long, caddr_t)); 555 void loopattach __P((int)); 556 int looutput __P((struct ifnet *, 557 struct mbuf *, struct sockaddr *, struct rtentry *)); 558 void lortrequest __P((int, struct rtentry *, struct sockaddr *)); 559 560 /* 561 * These are exported because they're an easy way to tell if 562 * an interface is going away without having to burn a flag. 563 */ 564 int if_nulloutput __P((struct ifnet *, struct mbuf *, 565 struct sockaddr *, struct rtentry *)); 566 void if_nullinput __P((struct ifnet *, struct mbuf *)); 567 void if_nullstart __P((struct ifnet *)); 568 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 569 int if_nullreset __P((struct ifnet *)); 570 void if_nullwatchdog __P((struct ifnet *)); 571 void if_nulldrain __P((struct ifnet *)); 572 #else 573 struct if_nameindex { 574 unsigned int if_index; /* 1, 2, ... */ 575 char *if_name; /* null terminated name: "le0", ... */ 576 }; 577 578 #include <sys/cdefs.h> 579 __BEGIN_DECLS 580 unsigned int if_nametoindex __P((const char *)); 581 char * if_indextoname __P((unsigned int, char *)); 582 struct if_nameindex * if_nameindex __P((void)); 583 void if_freenameindex __P((struct if_nameindex *)); 584 __END_DECLS 585 #endif /* _KERNEL */ 586 #endif /* !_NET_IF_H_ */ 587
Indexes created Tue Sep 23 14:10:03 GMT 2025