if.h revision 1.74
1/* $OpenBSD: if.h,v 1.74 2005/06/12 00:41:33 henning Exp $ */ 2/* $NetBSD: if.h,v 1.23 1996/05/07 02:40:27 thorpej Exp $ */ 3 4/* 5 * Copyright (c) 1982, 1986, 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)if.h 8.1 (Berkeley) 6/10/93 33 */ 34 35#ifndef _NET_IF_H_ 36#define _NET_IF_H_ 37 38#include <sys/queue.h> 39 40/* 41 * Always include ALTQ glue here -- we use the ALTQ interface queue 42 * structure even when ALTQ is not configured into the kernel so that 43 * the size of struct ifnet does not changed based on the option. The 44 * ALTQ queue structure is API-compatible with the legacy ifqueue. 45 */ 46#include <altq/if_altq.h> 47 48/* 49 * Structures defining a network interface, providing a packet 50 * transport mechanism (ala level 0 of the PUP protocols). 51 * 52 * Each interface accepts output datagrams of a specified maximum 53 * length, and provides higher level routines with input datagrams 54 * received from its medium. 55 * 56 * Output occurs when the routine if_output is called, with four parameters: 57 * (*ifp->if_output)(ifp, m, dst, rt) 58 * Here m is the mbuf chain to be sent and dst is the destination address. 59 * The output routine encapsulates the supplied datagram if necessary, 60 * and then transmits it on its medium. 61 * 62 * On input, each interface unwraps the data received by it, and either 63 * places it on the input queue of a internetwork datagram routine 64 * and posts the associated software interrupt, or passes the datagram to a raw 65 * packet input routine. 66 * 67 * Routines exist for locating interfaces by their addresses 68 * or for locating a interface on a certain network, as well as more general 69 * routing and gateway routines maintaining information used to locate 70 * interfaces. These routines live in the files if.c and route.c 71 */ 72/* XXX fast fix for SNMP, going away soon */ 73#include <sys/time.h> 74 75struct mbuf; 76struct proc; 77struct rtentry; 78struct socket; 79struct ether_header; 80struct arpcom; 81struct rt_addrinfo; 82 83/* 84 * Structure describing a `cloning' interface. 85 */ 86struct if_clone { 87 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 88 const char *ifc_name; /* name of device, e.g. `gif' */ 89 size_t ifc_namelen; /* length of name */ 90 91 int (*ifc_create)(struct if_clone *, int); 92 int (*ifc_destroy)(struct ifnet *); 93}; 94 95#define IF_CLONE_INITIALIZER(name, create, destroy) \ 96 { { 0 }, name, sizeof(name) - 1, create, destroy } 97 98/* 99 * Structure used to query names of interface cloners. 100 */ 101struct if_clonereq { 102 int ifcr_total; /* total cloners (out) */ 103 int ifcr_count; /* room for this many in user buffer */ 104 char *ifcr_buffer; /* buffer for cloner names */ 105}; 106 107/* 108 * Structure defining statistics and other data kept regarding a network 109 * interface. 110 */ 111struct if_data { 112 /* generic interface information */ 113 u_char ifi_type; /* ethernet, tokenring, etc. */ 114 u_char ifi_addrlen; /* media address length */ 115 u_char ifi_hdrlen; /* media header length */ 116 u_char ifi_link_state; /* current link state */ 117 u_long ifi_mtu; /* maximum transmission unit */ 118 u_long ifi_metric; /* routing metric (external only) */ 119 u_long ifi_baudrate; /* linespeed */ 120 /* volatile statistics */ 121 u_long ifi_ipackets; /* packets received on interface */ 122 u_long ifi_ierrors; /* input errors on interface */ 123 u_long ifi_opackets; /* packets sent on interface */ 124 u_long ifi_oerrors; /* output errors on interface */ 125 u_long ifi_collisions; /* collisions on csma interfaces */ 126 u_long ifi_ibytes; /* total number of octets received */ 127 u_long ifi_obytes; /* total number of octets sent */ 128 u_long ifi_imcasts; /* packets received via multicast */ 129 u_long ifi_omcasts; /* packets sent via multicast */ 130 u_long ifi_iqdrops; /* dropped on input, this interface */ 131 u_long ifi_noproto; /* destined for unsupported protocol */ 132 struct timeval ifi_lastchange; /* last operational state change */ 133}; 134 135/* 136 * Structure defining a queue for a network interface. 137 */ 138struct ifqueue { 139 struct mbuf *ifq_head; 140 struct mbuf *ifq_tail; 141 int ifq_len; 142 int ifq_maxlen; 143 int ifq_drops; 144 struct timeout *ifq_congestion; 145}; 146 147/* 148 * Values for if_link_state. 149 */ 150#define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 151#define LINK_STATE_DOWN 1 /* link is down */ 152#define LINK_STATE_UP 2 /* link is up */ 153 154/* 155 * Structure defining a queue for a network interface. 156 * 157 * (Would like to call this struct ``if'', but C isn't PL/1.) 158 */ 159TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 160 161/* 162 * Length of interface external name, including terminating '\0'. 163 * Note: this is the same size as a generic device's external name. 164 */ 165#define IFNAMSIZ 16 166#define IF_NAMESIZE IFNAMSIZ 167 168/* 169 * Length of interface description, including terminating '\0'. 170 */ 171#define IFDESCRSIZE 64 172 173struct ifnet { /* and the entries */ 174 void *if_softc; /* lower-level data for this if */ 175 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 176 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 177 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 178 struct hook_desc_head *if_addrhooks; /* address change callbacks */ 179 struct hook_desc_head *if_linkstatehooks; /* link change callbacks */ 180 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 181 int if_pcount; /* number of promiscuous listeners */ 182 caddr_t if_bpf; /* packet filter structure */ 183 caddr_t if_bridge; /* bridge structure */ 184 caddr_t if_tp; /* used by trunk ports */ 185 caddr_t if_pf_kif; /* pf interface abstraction */ 186 union { 187 caddr_t carp_s; /* carp structure (used by !carp ifs) */ 188 struct ifnet *carp_d; /* ptr to carpdev (used by carp ifs) */ 189 } if_carp_ptr; 190#define if_carp if_carp_ptr.carp_s 191#define if_carpdev if_carp_ptr.carp_d 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 struct if_data if_data; /* stats and other data about if */ 196 int if_capabilities; /* interface capabilities */ 197 char if_description[IFDESCRSIZE]; /* interface description */ 198 199 /* procedure handles */ 200 /* output routine (enqueue) */ 201 int (*if_output)(struct ifnet *, struct mbuf *, struct sockaddr *, 202 struct rtentry *); 203 /* initiate output routine */ 204 void (*if_start)(struct ifnet *); 205 /* ioctl routine */ 206 int (*if_ioctl)(struct ifnet *, u_long, caddr_t); 207 /* init routine */ 208 int (*if_init)(struct ifnet *); 209 /* XXX bus reset routine */ 210 int (*if_reset)(struct ifnet *); 211 /* timer routine */ 212 void (*if_watchdog)(struct ifnet *); 213 struct ifaltq if_snd; /* output queue (includes altq) */ 214 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 215 216 void *if_afdata[AF_MAX]; 217}; 218#define if_mtu if_data.ifi_mtu 219#define if_type if_data.ifi_type 220#define if_addrlen if_data.ifi_addrlen 221#define if_hdrlen if_data.ifi_hdrlen 222#define if_metric if_data.ifi_metric 223#define if_link_state if_data.ifi_link_state 224#define if_baudrate if_data.ifi_baudrate 225#define if_ipackets if_data.ifi_ipackets 226#define if_ierrors if_data.ifi_ierrors 227#define if_opackets if_data.ifi_opackets 228#define if_oerrors if_data.ifi_oerrors 229#define if_collisions if_data.ifi_collisions 230#define if_ibytes if_data.ifi_ibytes 231#define if_obytes if_data.ifi_obytes 232#define if_imcasts if_data.ifi_imcasts 233#define if_omcasts if_data.ifi_omcasts 234#define if_iqdrops if_data.ifi_iqdrops 235#define if_noproto if_data.ifi_noproto 236#define if_lastchange if_data.ifi_lastchange 237 238#define IFF_UP 0x1 /* interface is up */ 239#define IFF_BROADCAST 0x2 /* broadcast address valid */ 240#define IFF_DEBUG 0x4 /* turn on debugging */ 241#define IFF_LOOPBACK 0x8 /* is a loopback net */ 242#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 243#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ 244#define IFF_RUNNING 0x40 /* resources allocated */ 245#define IFF_NOARP 0x80 /* no address resolution protocol */ 246#define IFF_PROMISC 0x100 /* receive all packets */ 247#define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 248#define IFF_OACTIVE 0x400 /* transmission in progress */ 249#define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 250#define IFF_LINK0 0x1000 /* per link layer defined bit */ 251#define IFF_LINK1 0x2000 /* per link layer defined bit */ 252#define IFF_LINK2 0x4000 /* per link layer defined bit */ 253#define IFF_MULTICAST 0x8000 /* supports multicast */ 254 255/* flags set internally only: */ 256#define IFF_CANTCHANGE \ 257 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 258 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) 259 260/* 261 * Some convenience macros used for setting ifi_baudrate. 262 */ 263#define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 264#define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 265#define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 266 267/* Capabilities that interfaces can advertise. */ 268#define IFCAP_CSUM_IPv4 0x00000001 /* can do IPv4 header csum */ 269#define IFCAP_CSUM_TCPv4 0x00000002 /* can do IPv4/TCP csum */ 270#define IFCAP_CSUM_UDPv4 0x00000004 /* can do IPv4/UDP csum */ 271#define IFCAP_IPSEC 0x00000008 /* can do IPsec */ 272#define IFCAP_VLAN_MTU 0x00000010 /* VLAN-compatible MTU */ 273#define IFCAP_VLAN_HWTAGGING 0x00000020 /* hardware VLAN tag support */ 274#define IFCAP_IPCOMP 0x00000040 /* can do IPcomp */ 275#define IFCAP_JUMBO_MTU 0x00000080 /* 9000 byte MTU supported */ 276#define IFCAP_CSUM_TCPv6 0x00000100 /* can do IPv6/TCP checksums */ 277#define IFCAP_CSUM_UDPv6 0x00000200 /* can do IPv6/UDP checksums */ 278#define IFCAP_CSUM_TCPv4_Rx 0x00000400 /* can do IPv4/TCP (Rx only) */ 279#define IFCAP_CSUM_UDPv4_Rx 0x00000800 /* can do IPv4/UDP (Rx only) */ 280 281/* 282 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 283 * input routines have queues of messages stored on ifqueue structures 284 * (defined above). Entries are added to and deleted from these structures 285 * by these macros, which should be called with ipl raised to splimp(). 286 */ 287#define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 288#define IF_DROP(ifq) ((ifq)->ifq_drops++) 289#define IF_ENQUEUE(ifq, m) { \ 290 (m)->m_nextpkt = 0; \ 291 if ((ifq)->ifq_tail == 0) \ 292 (ifq)->ifq_head = m; \ 293 else \ 294 (ifq)->ifq_tail->m_nextpkt = m; \ 295 (ifq)->ifq_tail = m; \ 296 (ifq)->ifq_len++; \ 297} 298#define IF_PREPEND(ifq, m) { \ 299 (m)->m_nextpkt = (ifq)->ifq_head; \ 300 if ((ifq)->ifq_tail == 0) \ 301 (ifq)->ifq_tail = (m); \ 302 (ifq)->ifq_head = (m); \ 303 (ifq)->ifq_len++; \ 304} 305#define IF_DEQUEUE(ifq, m) { \ 306 (m) = (ifq)->ifq_head; \ 307 if (m) { \ 308 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 309 (ifq)->ifq_tail = 0; \ 310 (m)->m_nextpkt = 0; \ 311 (ifq)->ifq_len--; \ 312 } \ 313} 314 315#define IF_INPUT_ENQUEUE(ifq, m) { \ 316 if (IF_QFULL(ifq)) { \ 317 IF_DROP(ifq); \ 318 m_freem(m); \ 319 if (!(ifq)->ifq_congestion) \ 320 if_congestion(ifq); \ 321 } else \ 322 IF_ENQUEUE(ifq, m); \ 323} 324 325#define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 326#define IF_PURGE(ifq) \ 327do { \ 328 struct mbuf *__m0; \ 329 \ 330 for (;;) { \ 331 IF_DEQUEUE((ifq), __m0); \ 332 if (__m0 == NULL) \ 333 break; \ 334 else \ 335 m_freem(__m0); \ 336 } \ 337} while (0) 338#define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 339 340#define IFQ_MAXLEN 50 341#define IFNET_SLOWHZ 1 /* granularity is 1 second */ 342 343/* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */ 344#define IFQCTL_LEN 1 345#define IFQCTL_MAXLEN 2 346#define IFQCTL_DROPS 3 347#define IFQCTL_CONGESTION 4 348#define IFQCTL_MAXID 5 349 350/* sysctl for ifq (per-protocol packet input queue variant of ifqueue) */ 351#define CTL_IFQ_NAMES { \ 352 { 0, 0 }, \ 353 { "len", CTLTYPE_INT }, \ 354 { "maxlen", CTLTYPE_INT }, \ 355 { "drops", CTLTYPE_INT }, \ 356 { "congestion", CTLTYPE_INT }, \ 357} 358 359/* 360 * The ifaddr structure contains information about one address 361 * of an interface. They are maintained by the different address families, 362 * are allocated and attached when an address is set, and are linked 363 * together so all addresses for an interface can be located. 364 */ 365struct ifaddr { 366 struct sockaddr *ifa_addr; /* address of interface */ 367 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 368#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 369 struct sockaddr *ifa_netmask; /* used to determine subnet */ 370 struct ifnet *ifa_ifp; /* back-pointer to interface */ 371 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 372 /* check or clean routes (+ or -)'d */ 373 void (*ifa_rtrequest)(int, struct rtentry *, struct rt_addrinfo *); 374 u_int ifa_flags; /* mostly rt_flags for cloning */ 375 u_int ifa_refcnt; /* count of references */ 376 int ifa_metric; /* cost of going out this interface */ 377}; 378#define IFA_ROUTE RTF_UP /* route installed */ 379 380/* 381 * Message format for use in obtaining information about interfaces 382 * from sysctl and the routing socket. 383 */ 384struct if_msghdr { 385 u_short ifm_msglen; /* to skip over non-understood messages */ 386 u_char ifm_version; /* future binary compatibility */ 387 u_char ifm_type; /* message type */ 388 int ifm_addrs; /* like rtm_addrs */ 389 int ifm_flags; /* value of if_flags */ 390 u_short ifm_index; /* index for associated ifp */ 391 struct if_data ifm_data;/* statistics and other data about if */ 392}; 393 394/* 395 * Message format for use in obtaining information about interface addresses 396 * from sysctl and the routing socket. 397 */ 398struct ifa_msghdr { 399 u_short ifam_msglen; /* to skip over non-understood messages */ 400 u_char ifam_version; /* future binary compatibility */ 401 u_char ifam_type; /* message type */ 402 int ifam_addrs; /* like rtm_addrs */ 403 int ifam_flags; /* value of ifa_flags */ 404 u_short ifam_index; /* index for associated ifp */ 405 int ifam_metric; /* value of ifa_metric */ 406}; 407 408 409/* 410 * Message format announcing the arrival or departure of a network interface. 411 */ 412struct if_announcemsghdr { 413 u_short ifan_msglen; /* to skip over non-understood messages */ 414 u_char ifan_version; /* future binary compatibility */ 415 u_char ifan_type; /* message type */ 416 u_short ifan_index; /* index for associated ifp */ 417 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 418 u_short ifan_what; /* what type of announcement */ 419}; 420 421#define IFAN_ARRIVAL 0 /* interface arrival */ 422#define IFAN_DEPARTURE 1 /* interface departure */ 423 424/* 425 * interface groups 426 */ 427 428#define IFG_ALL "all" /* group contains all interfaces */ 429#define IFG_EXTERNAL "external" /* if(s) default route(s) point to */ 430 431struct ifg_group { 432 char ifg_group[IFNAMSIZ]; 433 u_int ifg_refcnt; 434 caddr_t ifg_pf_kif; 435 TAILQ_HEAD(, ifg_member) ifg_members; 436 TAILQ_ENTRY(ifg_group) ifg_next; 437}; 438 439struct ifg_member { 440 TAILQ_ENTRY(ifg_member) ifgm_next; 441 struct ifnet *ifgm_ifp; 442}; 443 444struct ifg_list { 445 struct ifg_group *ifgl_group; 446 TAILQ_ENTRY(ifg_list) ifgl_next; 447}; 448 449struct ifg_req { 450 union { 451 char ifgrqu_group[IFNAMSIZ]; 452 char ifgrqu_member[IFNAMSIZ]; 453 } ifgrq_ifgrqu; 454#define ifgrq_group ifgrq_ifgrqu.ifgrqu_group 455#define ifgrq_member ifgrq_ifgrqu.ifgrqu_member 456}; 457 458/* 459 * Used to lookup groups for an interface 460 */ 461struct ifgroupreq { 462 char ifgr_name[IFNAMSIZ]; 463 u_int ifgr_len; 464 union { 465 char ifgru_group[IFNAMSIZ]; 466 struct ifg_req *ifgru_groups; 467 } ifgr_ifgru; 468#define ifgr_group ifgr_ifgru.ifgru_group 469#define ifgr_groups ifgr_ifgru.ifgru_groups 470}; 471 472/* 473 * Interface request structure used for socket 474 * ioctl's. All interface ioctl's must have parameter 475 * definitions which begin with ifr_name. The 476 * remainder may be interface specific. 477 */ 478struct ifreq { 479 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 480 union { 481 struct sockaddr ifru_addr; 482 struct sockaddr ifru_dstaddr; 483 struct sockaddr ifru_broadaddr; 484 short ifru_flags; 485 int ifru_metric; 486 caddr_t ifru_data; 487 } ifr_ifru; 488#define ifr_addr ifr_ifru.ifru_addr /* address */ 489#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 490#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 491#define ifr_flags ifr_ifru.ifru_flags /* flags */ 492#define ifr_metric ifr_ifru.ifru_metric /* metric */ 493#define ifr_mtu ifr_ifru.ifru_metric /* mtu (overload) */ 494#define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 495#define ifr_data ifr_ifru.ifru_data /* for use by interface */ 496}; 497 498struct ifaliasreq { 499 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 500 struct sockaddr ifra_addr; 501 struct sockaddr ifra_dstaddr; 502#define ifra_broadaddr ifra_dstaddr 503 struct sockaddr ifra_mask; 504}; 505 506struct ifmediareq { 507 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 508 int ifm_current; /* current media options */ 509 int ifm_mask; /* don't care mask */ 510 int ifm_status; /* media status */ 511 int ifm_active; /* active options */ 512 int ifm_count; /* # entries in ifm_ulist 513 array */ 514 int *ifm_ulist; /* media words */ 515}; 516 517/* 518 * Structure used in SIOCGIFCONF request. 519 * Used to retrieve interface configuration 520 * for machine (useful for programs which 521 * must know all networks accessible). 522 */ 523struct ifconf { 524 int ifc_len; /* size of associated buffer */ 525 union { 526 caddr_t ifcu_buf; 527 struct ifreq *ifcu_req; 528 } ifc_ifcu; 529#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 530#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 531}; 532 533/* 534 * Structure for SIOC[AGD]LIFADDR 535 */ 536struct if_laddrreq { 537 char iflr_name[IFNAMSIZ]; 538 unsigned int flags; 539#define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 540 unsigned int prefixlen; /* in/out */ 541 struct sockaddr_storage addr; /* in/out */ 542 struct sockaddr_storage dstaddr; /* out */ 543}; 544 545struct if_nameindex { 546 unsigned int if_index; 547 char *if_name; 548}; 549 550#ifndef _KERNEL 551__BEGIN_DECLS 552unsigned int if_nametoindex(const char *); 553char *if_indextoname(unsigned int, char *); 554struct if_nameindex *if_nameindex(void); 555__END_DECLS 556#define if_freenameindex(x) free(x) 557#endif 558 559#include <net/if_arp.h> 560 561#ifdef _KERNEL 562#define IFAFREE(ifa) \ 563do { \ 564 if ((ifa)->ifa_refcnt <= 0) \ 565 ifafree(ifa); \ 566 else \ 567 (ifa)->ifa_refcnt--; \ 568} while (0) 569 570#ifdef ALTQ 571#define ALTQ_DECL(x) x 572 573#define IFQ_ENQUEUE(ifq, m, pattr, err) \ 574do { \ 575 if (ALTQ_IS_ENABLED((ifq))) \ 576 ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \ 577 else { \ 578 if (IF_QFULL((ifq))) { \ 579 m_freem((m)); \ 580 (err) = ENOBUFS; \ 581 } else { \ 582 IF_ENQUEUE((ifq), (m)); \ 583 (err) = 0; \ 584 } \ 585 } \ 586 if ((err)) \ 587 (ifq)->ifq_drops++; \ 588} while (0) 589 590#define IFQ_DEQUEUE(ifq, m) \ 591do { \ 592 if (TBR_IS_ENABLED((ifq))) \ 593 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 594 else if (ALTQ_IS_ENABLED((ifq))) \ 595 ALTQ_DEQUEUE((ifq), (m)); \ 596 else \ 597 IF_DEQUEUE((ifq), (m)); \ 598} while (0) 599 600#define IFQ_POLL(ifq, m) \ 601do { \ 602 if (TBR_IS_ENABLED((ifq))) \ 603 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 604 else if (ALTQ_IS_ENABLED((ifq))) \ 605 ALTQ_POLL((ifq), (m)); \ 606 else \ 607 IF_POLL((ifq), (m)); \ 608} while (0) 609 610#define IFQ_PURGE(ifq) \ 611do { \ 612 if (ALTQ_IS_ENABLED((ifq))) \ 613 ALTQ_PURGE((ifq)); \ 614 else \ 615 IF_PURGE((ifq)); \ 616} while (0) 617 618#define IFQ_SET_READY(ifq) \ 619 do { ((ifq)->altq_flags |= ALTQF_READY); } while (0) 620 621#define IFQ_CLASSIFY(ifq, m, af, pa) \ 622do { \ 623 if (ALTQ_IS_ENABLED((ifq))) { \ 624 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 625 (pa)->pattr_class = (*(ifq)->altq_classify) \ 626 ((ifq)->altq_clfier, (m), (af)); \ 627 (pa)->pattr_af = (af); \ 628 (pa)->pattr_hdr = mtod((m), caddr_t); \ 629 } \ 630} while (0) 631 632#else /* !ALTQ */ 633#define ALTQ_DECL(x) /* nothing */ 634 635#define IFQ_ENQUEUE(ifq, m, pattr, err) \ 636do { \ 637 if (IF_QFULL((ifq))) { \ 638 m_freem((m)); \ 639 (err) = ENOBUFS; \ 640 } else { \ 641 IF_ENQUEUE((ifq), (m)); \ 642 (err) = 0; \ 643 } \ 644 if ((err)) \ 645 (ifq)->ifq_drops++; \ 646} while (0) 647 648#define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 649 650#define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 651 652#define IFQ_PURGE(ifq) IF_PURGE((ifq)) 653 654#define IFQ_SET_READY(ifq) /* nothing */ 655 656#define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */ 657 658#endif /* ALTQ */ 659 660#define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 661#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 662#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 663#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 664#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 665 666extern struct ifnet_head ifnet; 667extern struct ifnet **ifindex2ifnet; 668extern struct ifnet *lo0ifp; 669extern int if_indexlim; 670 671void ether_ifattach(struct ifnet *); 672void ether_ifdetach(struct ifnet *); 673int ether_ioctl(struct ifnet *, struct arpcom *, u_long, caddr_t); 674void ether_input_mbuf(struct ifnet *, struct mbuf *); 675void ether_input(struct ifnet *, struct ether_header *, struct mbuf *); 676int ether_output(struct ifnet *, 677 struct mbuf *, struct sockaddr *, struct rtentry *); 678char *ether_sprintf(u_char *); 679 680void if_alloc_sadl(struct ifnet *); 681void if_free_sadl(struct ifnet *); 682void if_attach(struct ifnet *); 683void if_attachdomain(void); 684void if_attachtail(struct ifnet *); 685void if_attachhead(struct ifnet *); 686void if_detach(struct ifnet *); 687void if_down(struct ifnet *); 688void if_link_state_change(struct ifnet *); 689void if_qflush(struct ifqueue *); 690void if_slowtimo(void *); 691void if_up(struct ifnet *); 692int ifconf(u_long, caddr_t); 693void ifinit(void); 694int ifioctl(struct socket *, u_long, caddr_t, struct proc *); 695int ifpromisc(struct ifnet *, int); 696int if_addgroup(struct ifnet *, const char *); 697int if_delgroup(struct ifnet *, const char *); 698void if_group_routechange(struct sockaddr *, struct sockaddr *); 699struct ifnet *ifunit(const char *); 700 701struct ifaddr *ifa_ifwithaddr(struct sockaddr *); 702struct ifaddr *ifa_ifwithaf(int); 703struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 704struct ifaddr *ifa_ifwithnet(struct sockaddr *); 705struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, 706 struct sockaddr *); 707struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 708void ifafree(struct ifaddr *); 709void link_rtrequest(int, struct rtentry *, struct rt_addrinfo *); 710 711void if_clone_attach(struct if_clone *); 712void if_clone_detach(struct if_clone *); 713 714int if_clone_create(const char *); 715int if_clone_destroy(const char *); 716 717void if_congestion(struct ifqueue *); 718int sysctl_ifq(int *, u_int, void *, size_t *, void *, size_t, 719 struct ifqueue *); 720 721int loioctl(struct ifnet *, u_long, caddr_t); 722void loopattach(int); 723int looutput(struct ifnet *, 724 struct mbuf *, struct sockaddr *, struct rtentry *); 725void lortrequest(int, struct rtentry *, struct rt_addrinfo *); 726#endif /* _KERNEL */ 727#endif /* _NET_IF_H_ */ 728