if.h revision 1.58
1 /* $NetBSD: if.h,v 1.58 2000/12/18 18:54:47 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 * Always include ALTQ glue here -- we use the ALTQ interface queue 83 * structure even when ALTQ is not configured into the kernel so that 84 * the size of struct ifnet does not changed based on the option. The 85 * ALTQ queue structure is API-compatible with the legacy ifqueue. 86 */ 87 #include <altq/if_altq.h> 88 89 /* 90 * Structures defining a network interface, providing a packet 91 * transport mechanism (ala level 0 of the PUP protocols). 92 * 93 * Each interface accepts output datagrams of a specified maximum 94 * length, and provides higher level routines with input datagrams 95 * received from its medium. 96 * 97 * Output occurs when the routine if_output is called, with four parameters: 98 * (*ifp->if_output)(ifp, m, dst, rt) 99 * Here m is the mbuf chain to be sent and dst is the destination address. 100 * The output routine encapsulates the supplied datagram if necessary, 101 * and then transmits it on its medium. 102 * 103 * On input, each interface unwraps the data received by it, and either 104 * places it on the input queue of a internetwork datagram routine 105 * and posts the associated software interrupt, or passes the datagram to a raw 106 * packet input routine. 107 * 108 * Routines exist for locating interfaces by their addresses 109 * or for locating a interface on a certain network, as well as more general 110 * routing and gateway routines maintaining information used to locate 111 * interfaces. These routines live in the files if.c and route.c 112 */ 113 /* XXX fast fix for SNMP, going away soon */ 114 #include <sys/time.h> 115 116 #if defined(_KERNEL) && !defined(_LKM) 117 #include "opt_compat_netbsd.h" 118 #endif 119 120 struct mbuf; 121 struct proc; 122 struct rtentry; 123 struct socket; 124 struct ether_header; 125 struct ifnet; 126 127 /* 128 * Length of interface external name, including terminating '\0'. 129 * Note: this is the same size as a generic device's external name. 130 */ 131 #define IFNAMSIZ 16 132 #define IF_NAMESIZE IFNAMSIZ 133 134 /* 135 * Structure describing a `cloning' interface. 136 */ 137 struct if_clone { 138 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 139 const char *ifc_name; /* name of device, e.g. `gif' */ 140 size_t ifc_namelen; /* length of name */ 141 142 int (*ifc_create)(struct if_clone *, int); 143 void (*ifc_destroy)(struct ifnet *); 144 }; 145 146 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 147 { { 0 }, name, sizeof(name) - 1, create, destroy } 148 149 /* 150 * Structure used to query names of interface cloners. 151 */ 152 struct if_clonereq { 153 int ifcr_total; /* total cloners (out) */ 154 int ifcr_count; /* room for this many in user buffer */ 155 char *ifcr_buffer; /* buffer for cloner names */ 156 }; 157 158 /* 159 * Structure defining statistics and other data kept regarding a network 160 * interface. 161 */ 162 struct if_data { 163 /* generic interface information */ 164 u_char ifi_type; /* ethernet, tokenring, etc. */ 165 u_char ifi_addrlen; /* media address length */ 166 u_char ifi_hdrlen; /* media header length */ 167 int ifi_link_state; /* current link state */ 168 u_quad_t ifi_mtu; /* maximum transmission unit */ 169 u_quad_t ifi_metric; /* routing metric (external only) */ 170 u_quad_t ifi_baudrate; /* linespeed */ 171 /* volatile statistics */ 172 u_quad_t ifi_ipackets; /* packets received on interface */ 173 u_quad_t ifi_ierrors; /* input errors on interface */ 174 u_quad_t ifi_opackets; /* packets sent on interface */ 175 u_quad_t ifi_oerrors; /* output errors on interface */ 176 u_quad_t ifi_collisions; /* collisions on csma interfaces */ 177 u_quad_t ifi_ibytes; /* total number of octets received */ 178 u_quad_t ifi_obytes; /* total number of octets sent */ 179 u_quad_t ifi_imcasts; /* packets received via multicast */ 180 u_quad_t ifi_omcasts; /* packets sent via multicast */ 181 u_quad_t ifi_iqdrops; /* dropped on input, this interface */ 182 u_quad_t ifi_noproto; /* destined for unsupported protocol */ 183 struct timeval ifi_lastchange; /* last updated */ 184 }; 185 186 /* 187 * Values for if_link_state. 188 */ 189 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 190 #define LINK_STATE_DOWN 1 /* link is down */ 191 #define LINK_STATE_UP 2 /* link is up */ 192 193 #if defined(_KERNEL) && defined(COMPAT_14) 194 /* Pre-1.5 if_data struct */ 195 struct if_data14 { 196 /* generic interface information */ 197 u_char ifi_type; /* ethernet, tokenring, etc. */ 198 u_char ifi_addrlen; /* media address length */ 199 u_char ifi_hdrlen; /* media header length */ 200 u_long ifi_mtu; /* maximum transmission unit */ 201 u_long ifi_metric; /* routing metric (external only) */ 202 u_long ifi_baudrate; /* linespeed */ 203 /* volatile statistics */ 204 u_long ifi_ipackets; /* packets received on interface */ 205 u_long ifi_ierrors; /* input errors on interface */ 206 u_long ifi_opackets; /* packets sent on interface */ 207 u_long ifi_oerrors; /* output errors on interface */ 208 u_long ifi_collisions; /* collisions on csma interfaces */ 209 u_long ifi_ibytes; /* total number of octets received */ 210 u_long ifi_obytes; /* total number of octets sent */ 211 u_long ifi_imcasts; /* packets received via multicast */ 212 u_long ifi_omcasts; /* packets sent via multicast */ 213 u_long ifi_iqdrops; /* dropped on input, this interface */ 214 u_long ifi_noproto; /* destined for unsupported protocol */ 215 struct timeval ifi_lastchange; /* last updated */ 216 }; 217 #endif /* _KERNEL && COMPAT_14 */ 218 219 /* 220 * Structure defining a queue for a network interface. 221 */ 222 struct ifqueue { 223 struct mbuf *ifq_head; 224 struct mbuf *ifq_tail; 225 int ifq_len; 226 int ifq_maxlen; 227 int ifq_drops; 228 }; 229 230 /* 231 * Structure defining a queue for a network interface. 232 * 233 * (Would like to call this struct ``if'', but C isn't PL/1.) 234 */ 235 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 236 237 struct ifnet { /* and the entries */ 238 void *if_softc; /* lower-level data for this if */ 239 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 240 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 241 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 242 int if_pcount; /* number of promiscuous listeners */ 243 caddr_t if_bpf; /* packet filter structure */ 244 u_short if_index; /* numeric abbreviation for this if */ 245 short if_timer; /* time 'til if_watchdog called */ 246 short if_flags; /* up/down, broadcast, etc. */ 247 short if__pad1; /* be nice to m68k ports */ 248 struct if_data if_data; /* statistics and other data about if */ 249 /* 250 * Procedure handles. If you add more of these, don't forget the 251 * corresponding NULL stub in if.c. 252 */ 253 int (*if_output) /* output routine (enqueue) */ 254 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 255 struct rtentry *)); 256 void (*if_input) /* input routine (from h/w driver) */ 257 __P((struct ifnet *, struct mbuf *)); 258 void (*if_start) /* initiate output routine */ 259 __P((struct ifnet *)); 260 int (*if_ioctl) /* ioctl routine */ 261 __P((struct ifnet *, u_long, caddr_t)); 262 int (*if_init) /* init routine */ 263 __P((struct ifnet *)); 264 void (*if_stop) /* stop routine */ 265 __P((struct ifnet *, int)); 266 void (*if_watchdog) /* timer routine */ 267 __P((struct ifnet *)); 268 void (*if_drain) /* routine to release resources */ 269 __P((struct ifnet *)); 270 struct ifaltq if_snd; /* output queue (includes altq) */ 271 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 272 u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 273 struct ifprefix *if_prefixlist; /* linked list of prefixes per if */ 274 void *if_bridge; /* bridge glue */ 275 }; 276 #define if_mtu if_data.ifi_mtu 277 #define if_type if_data.ifi_type 278 #define if_addrlen if_data.ifi_addrlen 279 #define if_hdrlen if_data.ifi_hdrlen 280 #define if_metric if_data.ifi_metric 281 #define if_link_state if_data.ifi_link_state 282 #define if_baudrate if_data.ifi_baudrate 283 #define if_ipackets if_data.ifi_ipackets 284 #define if_ierrors if_data.ifi_ierrors 285 #define if_opackets if_data.ifi_opackets 286 #define if_oerrors if_data.ifi_oerrors 287 #define if_collisions if_data.ifi_collisions 288 #define if_ibytes if_data.ifi_ibytes 289 #define if_obytes if_data.ifi_obytes 290 #define if_imcasts if_data.ifi_imcasts 291 #define if_omcasts if_data.ifi_omcasts 292 #define if_iqdrops if_data.ifi_iqdrops 293 #define if_noproto if_data.ifi_noproto 294 #define if_lastchange if_data.ifi_lastchange 295 296 #define IFF_UP 0x1 /* interface is up */ 297 #define IFF_BROADCAST 0x2 /* broadcast address valid */ 298 #define IFF_DEBUG 0x4 /* turn on debugging */ 299 #define IFF_LOOPBACK 0x8 /* is a loopback net */ 300 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 301 #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ 302 #define IFF_RUNNING 0x40 /* resources allocated */ 303 #define IFF_NOARP 0x80 /* no address resolution protocol */ 304 #define IFF_PROMISC 0x100 /* receive all packets */ 305 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 306 #define IFF_OACTIVE 0x400 /* transmission in progress */ 307 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 308 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 309 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 310 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 311 #define IFF_MULTICAST 0x8000 /* supports multicast */ 312 313 /* flags set internally only: */ 314 #define IFF_CANTCHANGE \ 315 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 316 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 317 318 /* 319 * Some convenience macros used for setting ifi_baudrate. 320 * XXX 1000 vs. 1024? --thorpej (at) netbsd.org 321 */ 322 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 323 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 324 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 325 326 /* 327 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 328 * input routines have queues of messages stored on ifqueue structures 329 * (defined above). Entries are added to and deleted from these structures 330 * by these macros, which should be called with ipl raised to splimp(). 331 */ 332 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 333 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 334 #define IF_ENQUEUE(ifq, m) { \ 335 (m)->m_nextpkt = 0; \ 336 if ((ifq)->ifq_tail == 0) \ 337 (ifq)->ifq_head = m; \ 338 else \ 339 (ifq)->ifq_tail->m_nextpkt = m; \ 340 (ifq)->ifq_tail = m; \ 341 (ifq)->ifq_len++; \ 342 } 343 #define IF_PREPEND(ifq, m) { \ 344 (m)->m_nextpkt = (ifq)->ifq_head; \ 345 if ((ifq)->ifq_tail == 0) \ 346 (ifq)->ifq_tail = (m); \ 347 (ifq)->ifq_head = (m); \ 348 (ifq)->ifq_len++; \ 349 } 350 #define IF_DEQUEUE(ifq, m) { \ 351 (m) = (ifq)->ifq_head; \ 352 if (m) { \ 353 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 354 (ifq)->ifq_tail = 0; \ 355 (m)->m_nextpkt = 0; \ 356 (ifq)->ifq_len--; \ 357 } \ 358 } 359 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 360 #define IF_PURGE(ifq) \ 361 do { \ 362 struct mbuf *__m0; \ 363 \ 364 for (;;) { \ 365 IF_DEQUEUE((ifq), __m0); \ 366 if (__m0 == NULL) \ 367 break; \ 368 else \ 369 m_freem(__m0); \ 370 } \ 371 } while (0) 372 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 373 374 #define IFQ_MAXLEN 50 375 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 376 377 /* 378 * Structure defining statistics and other data kept regarding an address 379 * on a network interface. 380 */ 381 struct ifaddr_data { 382 int64_t ifad_inbytes; 383 int64_t ifad_outbytes; 384 }; 385 386 /* 387 * The ifaddr structure contains information about one address 388 * of an interface. They are maintained by the different address families, 389 * are allocated and attached when an address is set, and are linked 390 * together so all addresses for an interface can be located. 391 */ 392 struct ifaddr { 393 struct sockaddr *ifa_addr; /* address of interface */ 394 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 395 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 396 struct sockaddr *ifa_netmask; /* used to determine subnet */ 397 struct ifnet *ifa_ifp; /* back-pointer to interface */ 398 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 399 struct ifaddr_data ifa_data; /* statistics on the address */ 400 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 401 __P((int, struct rtentry *, struct sockaddr *)); 402 u_int ifa_flags; /* mostly rt_flags for cloning */ 403 int ifa_refcnt; /* count of references */ 404 int ifa_metric; /* cost of going out this interface */ 405 }; 406 #define IFA_ROUTE RTF_UP /* route installed */ 407 408 /* 409 * The prefix structure contains information about one prefix 410 * of an interface. They are maintained by the different address families, 411 * are allocated and attached when an prefix or an address is set, 412 * and are linked together so all prfefixes for an interface can be located. 413 */ 414 struct ifprefix { 415 struct sockaddr *ifpr_prefix; /* prefix of interface */ 416 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 417 struct ifprefix *ifpr_next; 418 u_char ifpr_plen; /* prefix length in bits */ 419 u_char ifpr_type; /* protocol dependent prefix type */ 420 }; 421 422 /* 423 * Message format for use in obtaining information about interfaces 424 * from sysctl and the routing socket. 425 */ 426 struct if_msghdr { 427 u_short ifm_msglen; /* to skip over non-understood messages */ 428 u_char ifm_version; /* future binary compatability */ 429 u_char ifm_type; /* message type */ 430 int ifm_addrs; /* like rtm_addrs */ 431 int ifm_flags; /* value of if_flags */ 432 u_short ifm_index; /* index for associated ifp */ 433 struct if_data ifm_data;/* statistics and other data about if */ 434 }; 435 436 #if defined(_KERNEL) && defined(COMPAT_14) 437 /* pre-1.5 if_msghdr (ifm_data changed) */ 438 struct if_msghdr14 { 439 u_short ifm_msglen; /* to skip over non-understood messages */ 440 u_char ifm_version; /* future binary compatability */ 441 u_char ifm_type; /* message type */ 442 int ifm_addrs; /* like rtm_addrs */ 443 int ifm_flags; /* value of if_flags */ 444 u_short ifm_index; /* index for associated ifp */ 445 struct if_data14 ifm_data; /* statistics and other data about if */ 446 }; 447 #endif /* _KERNEL && COMPAT_14 */ 448 449 /* 450 * Message format for use in obtaining information about interface addresses 451 * from sysctl and the routing socket. 452 */ 453 struct ifa_msghdr { 454 u_short ifam_msglen; /* to skip over non-understood messages */ 455 u_char ifam_version; /* future binary compatability */ 456 u_char ifam_type; /* message type */ 457 int ifam_addrs; /* like rtm_addrs */ 458 int ifam_flags; /* value of ifa_flags */ 459 u_short ifam_index; /* index for associated ifp */ 460 int ifam_metric; /* value of ifa_metric */ 461 }; 462 463 /* 464 * Message format announcing the arrival or departure of a network interface. 465 */ 466 struct if_announcemsghdr { 467 u_short ifan_msglen; /* to skip over non-understood messages */ 468 u_char ifan_version; /* future binary compatibility */ 469 u_char ifan_type; /* message type */ 470 u_short ifan_index; /* index for associated ifp */ 471 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 472 u_short ifan_what; /* what type of announcement */ 473 }; 474 475 #define IFAN_ARRIVAL 0 /* interface arrival */ 476 #define IFAN_DEPARTURE 1 /* interface departure */ 477 478 /* 479 * Interface request structure used for socket 480 * ioctl's. All interface ioctl's must have parameter 481 * definitions which begin with ifr_name. The 482 * remainder may be interface specific. 483 */ 484 struct ifreq { 485 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 486 union { 487 struct sockaddr ifru_addr; 488 struct sockaddr ifru_dstaddr; 489 struct sockaddr ifru_broadaddr; 490 short ifru_flags; 491 int ifru_metric; 492 int ifru_mtu; 493 u_int ifru_value; 494 caddr_t ifru_data; 495 } ifr_ifru; 496 #define ifr_addr ifr_ifru.ifru_addr /* address */ 497 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 498 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 499 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 500 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 501 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 502 #define ifr_value ifr_ifru.ifru_value /* generic value */ 503 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 504 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 505 }; 506 507 struct ifaliasreq { 508 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 509 struct sockaddr ifra_addr; 510 struct sockaddr ifra_dstaddr; 511 #define ifra_broadaddr ifra_dstaddr 512 struct sockaddr ifra_mask; 513 }; 514 515 struct ifmediareq { 516 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 517 int ifm_current; /* current media options */ 518 int ifm_mask; /* don't care mask */ 519 int ifm_status; /* media status */ 520 int ifm_active; /* active options */ 521 int ifm_count; /* # entries in ifm_ulist 522 array */ 523 int *ifm_ulist; /* media words */ 524 }; 525 526 527 struct ifdrv { 528 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 529 unsigned long ifd_cmd; 530 size_t ifd_len; 531 void *ifd_data; 532 }; 533 534 /* 535 * Structure used in SIOCGIFCONF request. 536 * Used to retrieve interface configuration 537 * for machine (useful for programs which 538 * must know all networks accessible). 539 */ 540 struct ifconf { 541 int ifc_len; /* size of associated buffer */ 542 union { 543 caddr_t ifcu_buf; 544 struct ifreq *ifcu_req; 545 } ifc_ifcu; 546 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 547 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 548 }; 549 550 /* 551 * Structure for SIOC[AGD]LIFADDR 552 */ 553 struct if_laddrreq { 554 char iflr_name[IFNAMSIZ]; 555 unsigned int flags; 556 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 557 unsigned int prefixlen; /* in/out */ 558 struct sockaddr_storage addr; /* in/out */ 559 struct sockaddr_storage dstaddr; /* out */ 560 }; 561 562 #include <net/if_arp.h> 563 564 #endif /* !_XOPEN_SOURCE */ 565 566 #ifdef _KERNEL 567 #ifdef IFAREF_DEBUG 568 #define IFAREF(ifa) \ 569 do { \ 570 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 571 (ifa), ++(ifa)->ifa_refcnt); \ 572 } while (0) 573 574 #define IFAFREE(ifa) \ 575 do { \ 576 if ((ifa)->ifa_refcnt <= 0) \ 577 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 578 __LINE__, (ifa)); \ 579 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 580 (ifa), --(ifa)->ifa_refcnt); \ 581 if ((ifa)->ifa_refcnt == 0) \ 582 ifafree(ifa); \ 583 } while (0) 584 #else 585 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 586 587 #ifdef DIAGNOSTIC 588 #define IFAFREE(ifa) \ 589 do { \ 590 if ((ifa)->ifa_refcnt <= 0) \ 591 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 592 __LINE__, (ifa)); \ 593 if (--(ifa)->ifa_refcnt == 0) \ 594 ifafree(ifa); \ 595 } while (0) 596 #else 597 #define IFAFREE(ifa) \ 598 do { \ 599 if (--(ifa)->ifa_refcnt == 0) \ 600 ifafree(ifa); \ 601 } while (0) 602 #endif /* DIAGNOSTIC */ 603 #endif /* IFAREF_DEBUG */ 604 605 #ifdef ALTQ 606 #define ALTQ_DECL(x) x 607 608 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 609 do { \ 610 if (ALTQ_IS_ENABLED((ifq))) \ 611 ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \ 612 else { \ 613 if (IF_QFULL((ifq))) { \ 614 m_freem((m)); \ 615 (err) = ENOBUFS; \ 616 } else { \ 617 IF_ENQUEUE((ifq), (m)); \ 618 (err) = 0; \ 619 } \ 620 } \ 621 if ((err)) \ 622 (ifq)->ifq_drops++; \ 623 } while (0) 624 625 #define IFQ_DEQUEUE(ifq, m) \ 626 do { \ 627 if (TBR_IS_ENABLED((ifq))) \ 628 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 629 else if (ALTQ_IS_ENABLED((ifq))) \ 630 ALTQ_DEQUEUE((ifq), (m)); \ 631 else \ 632 IF_POLL((ifq), (m)); \ 633 } while (0) 634 635 #define IFQ_POLL(ifq, m) \ 636 do { \ 637 if (TBR_IS_ENABLED((ifq))) \ 638 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 639 else if (ALTQ_IS_ENABLED((ifq))) \ 640 ALTQ_POLL((ifq), (m)); \ 641 else \ 642 IF_POLL((ifq), (m)); \ 643 } while (0) 644 645 #define IFQ_PURGE(ifq) \ 646 do { \ 647 if (ALTQ_IS_ENABLED((ifq))) \ 648 ALTQ_PURGE((ifq)); \ 649 else \ 650 IF_PURGE((ifq)); \ 651 } while (0) 652 653 #define IFQ_SET_READY(ifq) \ 654 do { \ 655 (ifq)->altq_flags |= ALTQF_READY; \ 656 } while (0) 657 658 #define IFQ_CLASSIFY(ifq, m, af, pa) \ 659 do { \ 660 if (ALTQ_IS_ENABLED((ifq))) { \ 661 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 662 (pa)->pattr_class = (*(ifq)->altq_classify) \ 663 ((ifq)->altq_clfier, (m), (af)); \ 664 (pa)->pattr_af = (af); \ 665 (pa)->pattr_hdr = mtod((m), caddr_t); \ 666 } \ 667 } while (0) 668 #else /* ! ALTQ */ 669 #define ALTQ_DECL(x) /* nothing */ 670 671 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 672 do { \ 673 if (IF_QFULL((ifq))) { \ 674 m_freem((m)); \ 675 (err) = ENOBUFS; \ 676 } else { \ 677 IF_ENQUEUE((ifq), (m)); \ 678 (err) = 0; \ 679 } \ 680 if ((err)) \ 681 (ifq)->ifq_drops++; \ 682 } while (0) 683 684 #define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 685 686 #define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 687 688 #define IFQ_PURGE(ifq) IF_PURGE((ifq)) 689 690 #define IFQ_SET_READY(ifq) /* nothing */ 691 692 #define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */ 693 694 #endif /* ALTQ */ 695 696 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 697 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 698 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 699 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 700 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 701 702 struct ifnet_head ifnet; 703 extern struct ifnet **ifindex2ifnet; 704 #if 0 705 struct ifnet loif[]; 706 #endif 707 extern int if_index; 708 709 void ether_ifattach __P((struct ifnet *, const u_int8_t *)); 710 void ether_ifdetach __P((struct ifnet *)); 711 char *ether_sprintf __P((const u_char *)); 712 713 void if_attach __P((struct ifnet *)); 714 void if_deactivate __P((struct ifnet *)); 715 void if_detach __P((struct ifnet *)); 716 void if_down __P((struct ifnet *)); 717 void if_slowtimo __P((void *)); 718 void if_up __P((struct ifnet *)); 719 int ifconf __P((u_long, caddr_t)); 720 void ifinit __P((void)); 721 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 722 int ifpromisc __P((struct ifnet *, int)); 723 struct ifnet *ifunit __P((const char *)); 724 725 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 726 struct ifaddr *ifa_ifwithaf __P((int)); 727 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 728 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 729 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 730 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 731 struct sockaddr *)); 732 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 733 void ifafree __P((struct ifaddr *)); 734 void link_rtrequest __P((int, struct rtentry *, struct sockaddr *)); 735 736 void if_clone_attach __P((struct if_clone *)); 737 void if_clone_detach __P((struct if_clone *)); 738 739 int if_clone_create __P((const char *)); 740 int if_clone_destroy __P((const char *)); 741 742 int loioctl __P((struct ifnet *, u_long, caddr_t)); 743 void loopattach __P((int)); 744 int looutput __P((struct ifnet *, 745 struct mbuf *, struct sockaddr *, struct rtentry *)); 746 void lortrequest __P((int, struct rtentry *, struct sockaddr *)); 747 748 /* 749 * These are exported because they're an easy way to tell if 750 * an interface is going away without having to burn a flag. 751 */ 752 int if_nulloutput __P((struct ifnet *, struct mbuf *, 753 struct sockaddr *, struct rtentry *)); 754 void if_nullinput __P((struct ifnet *, struct mbuf *)); 755 void if_nullstart __P((struct ifnet *)); 756 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 757 int if_nullinit __P((struct ifnet *)); 758 void if_nullstop __P((struct ifnet *, int)); 759 void if_nullwatchdog __P((struct ifnet *)); 760 void if_nulldrain __P((struct ifnet *)); 761 #else 762 struct if_nameindex { 763 unsigned int if_index; /* 1, 2, ... */ 764 char *if_name; /* null terminated name: "le0", ... */ 765 }; 766 767 #include <sys/cdefs.h> 768 __BEGIN_DECLS 769 unsigned int if_nametoindex __P((const char *)); 770 char * if_indextoname __P((unsigned int, char *)); 771 struct if_nameindex * if_nameindex __P((void)); 772 void if_freenameindex __P((struct if_nameindex *)); 773 __END_DECLS 774 #endif /* _KERNEL */ 775 #endif /* !_NET_IF_H_ */ 776
Indexes created Thu Sep 25 16:09:42 GMT 2025