if.h revision 1.92
1/* $OpenBSD: if.h,v 1.92 2007/09/03 15:24:49 claudio 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 an 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 an 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_int32_t ifi_mtu; /* maximum transmission unit */ 118 u_int32_t ifi_metric; /* routing metric (external only) */ 119 u_int32_t ifi_pad; 120 u_int64_t ifi_baudrate; /* linespeed */ 121 /* volatile statistics */ 122 u_int64_t ifi_ipackets; /* packets received on interface */ 123 u_int64_t ifi_ierrors; /* input errors on interface */ 124 u_int64_t ifi_opackets; /* packets sent on interface */ 125 u_int64_t ifi_oerrors; /* output errors on interface */ 126 u_int64_t ifi_collisions; /* collisions on csma interfaces */ 127 u_int64_t ifi_ibytes; /* total number of octets received */ 128 u_int64_t ifi_obytes; /* total number of octets sent */ 129 u_int64_t ifi_imcasts; /* packets received via multicast */ 130 u_int64_t ifi_omcasts; /* packets sent via multicast */ 131 u_int64_t ifi_iqdrops; /* dropped on input, this interface */ 132 u_int64_t ifi_noproto; /* destined for unsupported protocol */ 133 struct timeval ifi_lastchange; /* last operational state change */ 134}; 135 136/* 137 * Structure defining a queue for a network interface. 138 */ 139struct ifqueue { 140 struct mbuf *ifq_head; 141 struct mbuf *ifq_tail; 142 int ifq_len; 143 int ifq_maxlen; 144 int ifq_drops; 145 struct timeout *ifq_congestion; 146}; 147 148/* 149 * Values for if_link_state. 150 */ 151#define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 152#define LINK_STATE_DOWN 1 /* link is down */ 153#define LINK_STATE_UP 2 /* link is up */ 154#define LINK_STATE_HALF_DUPLEX 3 /* link is up and half duplex */ 155#define LINK_STATE_FULL_DUPLEX 4 /* link is up and full duplex */ 156#define LINK_STATE_IS_UP(_s) ((_s) >= LINK_STATE_UP) 157 158/* 159 * Structure defining a queue for a network interface. 160 * 161 * (Would like to call this struct ``if'', but C isn't PL/1.) 162 */ 163TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 164 165/* 166 * Length of interface external name, including terminating '\0'. 167 * Note: this is the same size as a generic device's external name. 168 */ 169#define IFNAMSIZ 16 170#define IF_NAMESIZE IFNAMSIZ 171 172/* 173 * Length of interface description, including terminating '\0'. 174 */ 175#define IFDESCRSIZE 64 176 177struct ifnet { /* and the entries */ 178 void *if_softc; /* lower-level data for this if */ 179 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 180 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 181 TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 182 struct hook_desc_head *if_addrhooks; /* address change callbacks */ 183 struct hook_desc_head *if_linkstatehooks; /* link change callbacks */ 184 struct hook_desc_head *if_detachhooks; /* detach callbacks */ 185 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 186 int if_pcount; /* number of promiscuous listeners */ 187 caddr_t if_bpf; /* packet filter structure */ 188 caddr_t if_bridge; /* bridge structure */ 189 caddr_t if_tp; /* used by trunk ports */ 190 caddr_t if_pf_kif; /* pf interface abstraction */ 191 union { 192 caddr_t carp_s; /* carp structure (used by !carp ifs) */ 193 struct ifnet *carp_d; /* ptr to carpdev (used by carp ifs) */ 194 } if_carp_ptr; 195#define if_carp if_carp_ptr.carp_s 196#define if_carpdev if_carp_ptr.carp_d 197 u_short if_index; /* numeric abbreviation for this if */ 198 short if_timer; /* time 'til if_watchdog called */ 199 short if_flags; /* up/down, broadcast, etc. */ 200 struct if_data if_data; /* stats and other data about if */ 201 u_int32_t if_hardmtu; /* maximum MTU device supports */ 202 int if_capabilities; /* interface capabilities */ 203 char if_description[IFDESCRSIZE]; /* interface description */ 204 u_short if_rtlabelid; /* next route label */ 205 206 /* procedure handles */ 207 /* output routine (enqueue) */ 208 int (*if_output)(struct ifnet *, struct mbuf *, struct sockaddr *, 209 struct rtentry *); 210 /* initiate output routine */ 211 void (*if_start)(struct ifnet *); 212 /* ioctl routine */ 213 int (*if_ioctl)(struct ifnet *, u_long, caddr_t); 214 /* init routine */ 215 int (*if_init)(struct ifnet *); 216 /* XXX bus reset routine */ 217 int (*if_reset)(struct ifnet *); 218 /* timer routine */ 219 void (*if_watchdog)(struct ifnet *); 220 struct ifaltq if_snd; /* output queue (includes altq) */ 221 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 222 223 void *if_afdata[AF_MAX]; 224}; 225#define if_mtu if_data.ifi_mtu 226#define if_type if_data.ifi_type 227#define if_addrlen if_data.ifi_addrlen 228#define if_hdrlen if_data.ifi_hdrlen 229#define if_metric if_data.ifi_metric 230#define if_link_state if_data.ifi_link_state 231#define if_baudrate if_data.ifi_baudrate 232#define if_ipackets if_data.ifi_ipackets 233#define if_ierrors if_data.ifi_ierrors 234#define if_opackets if_data.ifi_opackets 235#define if_oerrors if_data.ifi_oerrors 236#define if_collisions if_data.ifi_collisions 237#define if_ibytes if_data.ifi_ibytes 238#define if_obytes if_data.ifi_obytes 239#define if_imcasts if_data.ifi_imcasts 240#define if_omcasts if_data.ifi_omcasts 241#define if_iqdrops if_data.ifi_iqdrops 242#define if_noproto if_data.ifi_noproto 243#define if_lastchange if_data.ifi_lastchange 244 245#define IFF_UP 0x1 /* interface is up */ 246#define IFF_BROADCAST 0x2 /* broadcast address valid */ 247#define IFF_DEBUG 0x4 /* turn on debugging */ 248#define IFF_LOOPBACK 0x8 /* is a loopback net */ 249#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 250#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ 251#define IFF_RUNNING 0x40 /* resources allocated */ 252#define IFF_NOARP 0x80 /* no address resolution protocol */ 253#define IFF_PROMISC 0x100 /* receive all packets */ 254#define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 255#define IFF_OACTIVE 0x400 /* transmission in progress */ 256#define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 257#define IFF_LINK0 0x1000 /* per link layer defined bit */ 258#define IFF_LINK1 0x2000 /* per link layer defined bit */ 259#define IFF_LINK2 0x4000 /* per link layer defined bit */ 260#define IFF_MULTICAST 0x8000 /* supports multicast */ 261 262/* flags set internally only: */ 263#define IFF_CANTCHANGE \ 264 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 265 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) 266 267/* 268 * Some convenience macros used for setting ifi_baudrate. 269 */ 270#define IF_Kbps(x) ((x) * 1000ULL) /* kilobits/sec. */ 271#define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */ 272#define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* gigabits/sec. */ 273 274/* Capabilities that interfaces can advertise. */ 275#define IFCAP_CSUM_IPv4 0x00000001 /* can do IPv4 header csum */ 276#define IFCAP_CSUM_TCPv4 0x00000002 /* can do IPv4/TCP csum */ 277#define IFCAP_CSUM_UDPv4 0x00000004 /* can do IPv4/UDP csum */ 278#define IFCAP_IPSEC 0x00000008 /* can do IPsec */ 279#define IFCAP_VLAN_MTU 0x00000010 /* VLAN-compatible MTU */ 280#define IFCAP_VLAN_HWTAGGING 0x00000020 /* hardware VLAN tag support */ 281#define IFCAP_IPCOMP 0x00000040 /* can do IPcomp */ 282#define IFCAP_CSUM_TCPv6 0x00000080 /* can do IPv6/TCP checksums */ 283#define IFCAP_CSUM_UDPv6 0x00000100 /* can do IPv6/UDP checksums */ 284#define IFCAP_CSUM_TCPv4_Rx 0x00000200 /* can do IPv4/TCP (Rx only) */ 285#define IFCAP_CSUM_UDPv4_Rx 0x00000400 /* can do IPv4/UDP (Rx only) */ 286 287/* 288 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 289 * input routines have queues of messages stored on ifqueue structures 290 * (defined above). Entries are added to and deleted from these structures 291 * by these macros, which should be called with ipl raised to splnet(). 292 */ 293#define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 294#define IF_DROP(ifq) ((ifq)->ifq_drops++) 295#define IF_ENQUEUE(ifq, m) \ 296do { \ 297 (m)->m_nextpkt = 0; \ 298 if ((ifq)->ifq_tail == 0) \ 299 (ifq)->ifq_head = m; \ 300 else \ 301 (ifq)->ifq_tail->m_nextpkt = m; \ 302 (ifq)->ifq_tail = m; \ 303 (ifq)->ifq_len++; \ 304} while (0) 305#define IF_PREPEND(ifq, m) \ 306do { \ 307 (m)->m_nextpkt = (ifq)->ifq_head; \ 308 if ((ifq)->ifq_tail == 0) \ 309 (ifq)->ifq_tail = (m); \ 310 (ifq)->ifq_head = (m); \ 311 (ifq)->ifq_len++; \ 312} while (0) 313#define IF_DEQUEUE(ifq, m) \ 314do { \ 315 (m) = (ifq)->ifq_head; \ 316 if (m) { \ 317 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 318 (ifq)->ifq_tail = 0; \ 319 (m)->m_nextpkt = 0; \ 320 (ifq)->ifq_len--; \ 321 } \ 322} while (0) 323 324#define IF_INPUT_ENQUEUE(ifq, m) \ 325do { \ 326 if (IF_QFULL(ifq)) { \ 327 IF_DROP(ifq); \ 328 m_freem(m); \ 329 if (!(ifq)->ifq_congestion) \ 330 if_congestion(ifq); \ 331 } else \ 332 IF_ENQUEUE(ifq, m); \ 333} while (0) 334 335#define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 336#define IF_PURGE(ifq) \ 337do { \ 338 struct mbuf *__m0; \ 339 \ 340 for (;;) { \ 341 IF_DEQUEUE((ifq), __m0); \ 342 if (__m0 == NULL) \ 343 break; \ 344 else \ 345 m_freem(__m0); \ 346 } \ 347} while (0) 348#define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 349 350#define IFQ_MAXLEN 256 351#define IFNET_SLOWHZ 1 /* granularity is 1 second */ 352 353/* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */ 354#define IFQCTL_LEN 1 355#define IFQCTL_MAXLEN 2 356#define IFQCTL_DROPS 3 357#define IFQCTL_CONGESTION 4 358#define IFQCTL_MAXID 5 359 360/* sysctl for ifq (per-protocol packet input queue variant of ifqueue) */ 361#define CTL_IFQ_NAMES { \ 362 { 0, 0 }, \ 363 { "len", CTLTYPE_INT }, \ 364 { "maxlen", CTLTYPE_INT }, \ 365 { "drops", CTLTYPE_INT }, \ 366 { "congestion", CTLTYPE_INT }, \ 367} 368 369/* 370 * The ifaddr structure contains information about one address 371 * of an interface. They are maintained by the different address families, 372 * are allocated and attached when an address is set, and are linked 373 * together so all addresses for an interface can be located. 374 */ 375struct ifaddr { 376 struct sockaddr *ifa_addr; /* address of interface */ 377 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 378#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 379 struct sockaddr *ifa_netmask; /* used to determine subnet */ 380 struct ifnet *ifa_ifp; /* back-pointer to interface */ 381 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 382 /* check or clean routes (+ or -)'d */ 383 void (*ifa_rtrequest)(int, struct rtentry *, struct rt_addrinfo *); 384 u_int ifa_flags; /* mostly rt_flags for cloning */ 385 u_int ifa_refcnt; /* count of references */ 386 int ifa_metric; /* cost of going out this interface */ 387}; 388#define IFA_ROUTE RTF_UP /* route installed */ 389 390/* 391 * Message format for use in obtaining information about interfaces 392 * from sysctl and the routing socket. 393 */ 394struct if_msghdr { 395 u_short ifm_msglen; /* to skip over non-understood messages */ 396 u_char ifm_version; /* future binary compatibility */ 397 u_char ifm_type; /* message type */ 398 u_short ifm_hdrlen; /* sizeof(if_msghdr) to skip over the header */ 399 u_short ifm_index; /* index for associated ifp */ 400 u_short ifm_tableid; /* routing table id */ 401 u_short ifm_pad; 402 int ifm_addrs; /* like rtm_addrs */ 403 int ifm_flags; /* value of if_flags */ 404 int ifm_pad2; 405 struct if_data ifm_data;/* statistics and other data about if */ 406}; 407 408/* 409 * Message format for use in obtaining information about interface addresses 410 * from sysctl and the routing socket. 411 */ 412struct ifa_msghdr { 413 u_short ifam_msglen; /* to skip over non-understood messages */ 414 u_char ifam_version; /* future binary compatibility */ 415 u_char ifam_type; /* message type */ 416 u_short ifam_hdrlen; /* sizeof(ifa_msghdr) to skip over the header */ 417 u_short ifam_index; /* index for associated ifp */ 418 u_short ifam_tableid; /* routing table id */ 419 u_short ifam_pad; 420 int ifam_addrs; /* like rtm_addrs */ 421 int ifam_flags; /* value of ifa_flags */ 422 int ifam_metric; /* value of ifa_metric */ 423}; 424 425 426/* 427 * Message format announcing the arrival or departure of a network interface. 428 */ 429struct if_announcemsghdr { 430 u_short ifan_msglen; /* to skip over non-understood messages */ 431 u_char ifan_version; /* future binary compatibility */ 432 u_char ifan_type; /* message type */ 433 u_short ifan_hdrlen; /* sizeof(ifa_msghdr) to skip over the header */ 434 u_short ifan_index; /* index for associated ifp */ 435 u_short ifan_what; /* what type of announcement */ 436 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 437}; 438 439#define IFAN_ARRIVAL 0 /* interface arrival */ 440#define IFAN_DEPARTURE 1 /* interface departure */ 441 442/* 443 * Comaptibility structures for version 3 messages. 444 * Keep them till after OpenBSD 4.4 445 */ 446struct if_odata { 447 /* generic interface information */ 448 u_char ifi_type; /* ethernet, tokenring, etc. */ 449 u_char ifi_addrlen; /* media address length */ 450 u_char ifi_hdrlen; /* media header length */ 451 u_char ifi_link_state; /* current link state */ 452 u_long ifi_mtu; /* maximum transmission unit */ 453 u_long ifi_metric; /* routing metric (external only) */ 454 u_long ifi_baudrate; /* linespeed */ 455 /* volatile statistics */ 456 u_long ifi_ipackets; /* packets received on interface */ 457 u_long ifi_ierrors; /* input errors on interface */ 458 u_long ifi_opackets; /* packets sent on interface */ 459 u_long ifi_oerrors; /* output errors on interface */ 460 u_long ifi_collisions; /* collisions on csma interfaces */ 461 u_long ifi_ibytes; /* total number of octets received */ 462 u_long ifi_obytes; /* total number of octets sent */ 463 u_long ifi_imcasts; /* packets received via multicast */ 464 u_long ifi_omcasts; /* packets sent via multicast */ 465 u_long ifi_iqdrops; /* dropped on input, this interface */ 466 u_long ifi_noproto; /* destined for unsupported protocol */ 467 struct timeval ifi_lastchange; /* last operational state change */ 468}; 469 470struct if_omsghdr { 471 u_short ifm_msglen; /* to skip over non-understood messages */ 472 u_char ifm_version; /* future binary compatibility */ 473 u_char ifm_type; /* message type */ 474 int ifm_addrs; /* like rtm_addrs */ 475 int ifm_flags; /* value of if_flags */ 476 u_short ifm_index; /* index for associated ifp */ 477 struct if_odata ifm_data;/* statistics and other data about if */ 478}; 479 480struct ifa_omsghdr { 481 u_short ifam_msglen; /* to skip over non-understood messages */ 482 u_char ifam_version; /* future binary compatibility */ 483 u_char ifam_type; /* message type */ 484 int ifam_addrs; /* like rtm_addrs */ 485 int ifam_flags; /* value of ifa_flags */ 486 u_short ifam_index; /* index for associated ifp */ 487 int ifam_metric; /* value of ifa_metric */ 488}; 489 490 491/* 492 * interface groups 493 */ 494 495#define IFG_ALL "all" /* group contains all interfaces */ 496#define IFG_EGRESS "egress" /* if(s) default route(s) point to */ 497 498struct ifg_group { 499 char ifg_group[IFNAMSIZ]; 500 u_int ifg_refcnt; 501 caddr_t ifg_pf_kif; 502 int ifg_carp_demoted; 503 TAILQ_HEAD(, ifg_member) ifg_members; 504 TAILQ_ENTRY(ifg_group) ifg_next; 505}; 506 507struct ifg_member { 508 TAILQ_ENTRY(ifg_member) ifgm_next; 509 struct ifnet *ifgm_ifp; 510}; 511 512struct ifg_list { 513 struct ifg_group *ifgl_group; 514 TAILQ_ENTRY(ifg_list) ifgl_next; 515}; 516 517struct ifg_req { 518 union { 519 char ifgrqu_group[IFNAMSIZ]; 520 char ifgrqu_member[IFNAMSIZ]; 521 } ifgrq_ifgrqu; 522#define ifgrq_group ifgrq_ifgrqu.ifgrqu_group 523#define ifgrq_member ifgrq_ifgrqu.ifgrqu_member 524}; 525 526struct ifg_attrib { 527 int ifg_carp_demoted; 528}; 529 530/* 531 * Used to lookup groups for an interface 532 */ 533struct ifgroupreq { 534 char ifgr_name[IFNAMSIZ]; 535 u_int ifgr_len; 536 union { 537 char ifgru_group[IFNAMSIZ]; 538 struct ifg_req *ifgru_groups; 539 struct ifg_attrib ifgru_attrib; 540 } ifgr_ifgru; 541#define ifgr_group ifgr_ifgru.ifgru_group 542#define ifgr_groups ifgr_ifgru.ifgru_groups 543#define ifgr_attrib ifgr_ifgru.ifgru_attrib 544}; 545 546/* 547 * Interface request structure used for socket 548 * ioctl's. All interface ioctl's must have parameter 549 * definitions which begin with ifr_name. The 550 * remainder may be interface specific. 551 */ 552struct ifreq { 553 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 554 union { 555 struct sockaddr ifru_addr; 556 struct sockaddr ifru_dstaddr; 557 struct sockaddr ifru_broadaddr; 558 short ifru_flags; 559 int ifru_metric; 560 caddr_t ifru_data; 561 } ifr_ifru; 562#define ifr_addr ifr_ifru.ifru_addr /* address */ 563#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 564#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 565#define ifr_flags ifr_ifru.ifru_flags /* flags */ 566#define ifr_metric ifr_ifru.ifru_metric /* metric */ 567#define ifr_mtu ifr_ifru.ifru_metric /* mtu (overload) */ 568#define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 569#define ifr_data ifr_ifru.ifru_data /* for use by interface */ 570}; 571 572struct ifaliasreq { 573 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 574 struct sockaddr ifra_addr; 575 struct sockaddr ifra_dstaddr; 576#define ifra_broadaddr ifra_dstaddr 577 struct sockaddr ifra_mask; 578}; 579 580struct ifmediareq { 581 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 582 int ifm_current; /* current media options */ 583 int ifm_mask; /* don't care mask */ 584 int ifm_status; /* media status */ 585 int ifm_active; /* active options */ 586 int ifm_count; /* # entries in ifm_ulist 587 array */ 588 int *ifm_ulist; /* media words */ 589}; 590 591/* 592 * Structure used in SIOCGIFCONF request. 593 * Used to retrieve interface configuration 594 * for machine (useful for programs which 595 * must know all networks accessible). 596 */ 597struct ifconf { 598 int ifc_len; /* size of associated buffer */ 599 union { 600 caddr_t ifcu_buf; 601 struct ifreq *ifcu_req; 602 } ifc_ifcu; 603#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 604#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 605}; 606 607/* 608 * Structure for SIOC[AGD]LIFADDR 609 */ 610struct if_laddrreq { 611 char iflr_name[IFNAMSIZ]; 612 unsigned int flags; 613#define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 614 unsigned int prefixlen; /* in/out */ 615 struct sockaddr_storage addr; /* in/out */ 616 struct sockaddr_storage dstaddr; /* out */ 617}; 618 619struct if_nameindex { 620 unsigned int if_index; 621 char *if_name; 622}; 623 624#ifndef _KERNEL 625__BEGIN_DECLS 626unsigned int if_nametoindex(const char *); 627char *if_indextoname(unsigned int, char *); 628struct if_nameindex *if_nameindex(void); 629__END_DECLS 630#define if_freenameindex(x) free(x) 631#endif 632 633#include <net/if_arp.h> 634 635#ifdef _KERNEL 636#define IFAFREE(ifa) \ 637do { \ 638 if ((ifa)->ifa_refcnt <= 0) \ 639 ifafree(ifa); \ 640 else \ 641 (ifa)->ifa_refcnt--; \ 642} while (0) 643 644#ifdef ALTQ 645#define ALTQ_DECL(x) x 646 647#define IFQ_ENQUEUE(ifq, m, pattr, err) \ 648do { \ 649 if (ALTQ_IS_ENABLED((ifq))) \ 650 ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \ 651 else { \ 652 if (IF_QFULL((ifq))) { \ 653 m_freem((m)); \ 654 (err) = ENOBUFS; \ 655 } else { \ 656 IF_ENQUEUE((ifq), (m)); \ 657 (err) = 0; \ 658 } \ 659 } \ 660 if ((err)) \ 661 (ifq)->ifq_drops++; \ 662} while (0) 663 664#define IFQ_DEQUEUE(ifq, m) \ 665do { \ 666 if (TBR_IS_ENABLED((ifq))) \ 667 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 668 else if (ALTQ_IS_ENABLED((ifq))) \ 669 ALTQ_DEQUEUE((ifq), (m)); \ 670 else \ 671 IF_DEQUEUE((ifq), (m)); \ 672} while (0) 673 674#define IFQ_POLL(ifq, m) \ 675do { \ 676 if (TBR_IS_ENABLED((ifq))) \ 677 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 678 else if (ALTQ_IS_ENABLED((ifq))) \ 679 ALTQ_POLL((ifq), (m)); \ 680 else \ 681 IF_POLL((ifq), (m)); \ 682} while (0) 683 684#define IFQ_PURGE(ifq) \ 685do { \ 686 if (ALTQ_IS_ENABLED((ifq))) \ 687 ALTQ_PURGE((ifq)); \ 688 else \ 689 IF_PURGE((ifq)); \ 690} while (0) 691 692#define IFQ_SET_READY(ifq) \ 693 do { ((ifq)->altq_flags |= ALTQF_READY); } while (0) 694 695#define IFQ_CLASSIFY(ifq, m, af, pa) \ 696do { \ 697 if (ALTQ_IS_ENABLED((ifq))) { \ 698 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 699 (pa)->pattr_class = (*(ifq)->altq_classify) \ 700 ((ifq)->altq_clfier, (m), (af)); \ 701 (pa)->pattr_af = (af); \ 702 (pa)->pattr_hdr = mtod((m), caddr_t); \ 703 } \ 704} while (0) 705 706#else /* !ALTQ */ 707#define ALTQ_DECL(x) /* nothing */ 708 709#define IFQ_ENQUEUE(ifq, m, pattr, err) \ 710do { \ 711 if (IF_QFULL((ifq))) { \ 712 m_freem((m)); \ 713 (err) = ENOBUFS; \ 714 } else { \ 715 IF_ENQUEUE((ifq), (m)); \ 716 (err) = 0; \ 717 } \ 718 if ((err)) \ 719 (ifq)->ifq_drops++; \ 720} while (0) 721 722#define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 723 724#define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 725 726#define IFQ_PURGE(ifq) IF_PURGE((ifq)) 727 728#define IFQ_SET_READY(ifq) /* nothing */ 729 730#define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */ 731 732#endif /* ALTQ */ 733 734#define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 735#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 736#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 737#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 738#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 739 740extern int ifqmaxlen; 741extern struct ifnet_head ifnet; 742extern struct ifnet **ifindex2ifnet; 743extern struct ifnet *lo0ifp; 744extern int if_indexlim; 745 746#define ether_input_mbuf(ifp, m) ether_input((ifp), NULL, (m)) 747 748void ether_ifattach(struct ifnet *); 749void ether_ifdetach(struct ifnet *); 750int ether_ioctl(struct ifnet *, struct arpcom *, u_long, caddr_t); 751void ether_input(struct ifnet *, struct ether_header *, struct mbuf *); 752int ether_output(struct ifnet *, 753 struct mbuf *, struct sockaddr *, struct rtentry *); 754char *ether_sprintf(u_char *); 755 756void if_alloc_sadl(struct ifnet *); 757void if_free_sadl(struct ifnet *); 758void if_attach(struct ifnet *); 759void if_attachdomain(void); 760void if_attachtail(struct ifnet *); 761void if_attachhead(struct ifnet *); 762void if_detach(struct ifnet *); 763void if_down(struct ifnet *); 764void if_link_state_change(struct ifnet *); 765void if_qflush(struct ifqueue *); 766void if_slowtimo(void *); 767void if_up(struct ifnet *); 768int ifconf(u_long, caddr_t); 769void ifinit(void); 770int ifioctl(struct socket *, u_long, caddr_t, struct proc *); 771int ifpromisc(struct ifnet *, int); 772struct ifg_group *if_creategroup(const char *); 773int if_addgroup(struct ifnet *, const char *); 774int if_delgroup(struct ifnet *, const char *); 775void if_group_routechange(struct sockaddr *, struct sockaddr *); 776struct ifnet *ifunit(const char *); 777 778struct ifaddr *ifa_ifwithaddr(struct sockaddr *); 779struct ifaddr *ifa_ifwithaf(int); 780struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 781struct ifaddr *ifa_ifwithnet(struct sockaddr *); 782struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, 783 struct sockaddr *); 784struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 785void ifafree(struct ifaddr *); 786void link_rtrequest(int, struct rtentry *, struct rt_addrinfo *); 787 788void if_clone_attach(struct if_clone *); 789void if_clone_detach(struct if_clone *); 790 791int if_clone_create(const char *); 792int if_clone_destroy(const char *); 793 794void if_congestion(struct ifqueue *); 795int sysctl_ifq(int *, u_int, void *, size_t *, void *, size_t, 796 struct ifqueue *); 797 798int loioctl(struct ifnet *, u_long, caddr_t); 799void loopattach(int); 800int looutput(struct ifnet *, 801 struct mbuf *, struct sockaddr *, struct rtentry *); 802void lortrequest(int, struct rtentry *, struct rt_addrinfo *); 803#endif /* _KERNEL */ 804#endif /* _NET_IF_H_ */ 805