1 /** $MirOS: src/sys/net/if.h,v 1.6 2011/11/08 22:57:43 bsiegert Exp $ */ 2 /* $OpenBSD: if.h,v 1.76 2005/06/14 04:00:39 henning Exp $ */ 3 /* $NetBSD: if.h,v 1.23 1996/05/07 02:40:27 thorpej Exp $ */ 4 5 /* 6 * Copyright (c) 1982, 1986, 1989, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)if.h 8.1 (Berkeley) 6/10/93 34 */ 35 36 #ifndef _NET_IF_H_ 37 #define _NET_IF_H_ 38 39 #include <sys/queue.h> 40 41 /* 42 * Always include ALTQ glue here -- we use the ALTQ interface queue 43 * structure even when ALTQ is not configured into the kernel so that 44 * the size of struct ifnet does not changed based on the option. The 45 * ALTQ queue structure is API-compatible with the legacy ifqueue. 46 */ 47 #include <altq/if_altq.h> 48 49 /* 50 * Structures defining a network interface, providing a packet 51 * transport mechanism (ala level 0 of the PUP protocols). 52 * 53 * Each interface accepts output datagrams of a specified maximum 54 * length, and provides higher level routines with input datagrams 55 * received from its medium. 56 * 57 * Output occurs when the routine if_output is called, with four parameters: 58 * (*ifp->if_output)(ifp, m, dst, rt) 59 * Here m is the mbuf chain to be sent and dst is the destination address. 60 * The output routine encapsulates the supplied datagram if necessary, 61 * and then transmits it on its medium. 62 * 63 * On input, each interface unwraps the data received by it, and either 64 * places it on the input queue of a internetwork datagram routine 65 * and posts the associated software interrupt, or passes the datagram to a raw 66 * packet input routine. 67 * 68 * Routines exist for locating interfaces by their addresses 69 * or for locating a interface on a certain network, as well as more general 70 * routing and gateway routines maintaining information used to locate 71 * interfaces. These routines live in the files if.c and route.c 72 */ 73 /* XXX fast fix for SNMP, going away soon */ 74 #include <sys/time.h> 75 76 struct mbuf; 77 struct proc; 78 struct rtentry; 79 struct socket; 80 struct ether_header; 81 struct arpcom; 82 struct rt_addrinfo; 83 84 /* 85 * Structure describing a `cloning' interface. 86 */ 87 struct if_clone { 88 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 89 const char *ifc_name; /* name of device, e.g. `gif' */ 90 size_t ifc_namelen; /* length of name */ 91 92 int (*ifc_create)(struct if_clone *, int); 93 int (*ifc_destroy)(struct ifnet *); 94 }; 95 96 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 97 { { 0 }, name, sizeof(name) - 1, create, destroy } 98 99 /* 100 * Structure used to query names of interface cloners. 101 */ 102 struct if_clonereq { 103 int ifcr_total; /* total cloners (out) */ 104 int ifcr_count; /* room for this many in user buffer */ 105 char *ifcr_buffer; /* buffer for cloner names */ 106 }; 107 108 /* 109 * Structure defining statistics and other data kept regarding a network 110 * interface. 111 */ 112 struct if_data { 113 /* generic interface information */ 114 u_char ifi_type; /* ethernet, tokenring, etc. */ 115 u_char ifi_addrlen; /* media address length */ 116 u_char ifi_hdrlen; /* media header length */ 117 u_char ifi_link_state; /* current link state */ 118 u_long ifi_mtu; /* maximum transmission unit */ 119 u_long ifi_metric; /* routing metric (external only) */ 120 u_long ifi_baudrate; /* linespeed */ 121 /* volatile statistics */ 122 u_long ifi_ipackets; /* packets received on interface */ 123 u_long ifi_ierrors; /* input errors on interface */ 124 u_long ifi_opackets; /* packets sent on interface */ 125 u_long ifi_oerrors; /* output errors on interface */ 126 u_long ifi_collisions; /* collisions on csma interfaces */ 127 u_long ifi_ibytes; /* total number of octets received */ 128 u_long ifi_obytes; /* total number of octets sent */ 129 u_long ifi_imcasts; /* packets received via multicast */ 130 u_long ifi_omcasts; /* packets sent via multicast */ 131 u_long ifi_iqdrops; /* dropped on input, this interface */ 132 u_long 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 */ 139 struct 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 */ 154 155 /* 156 * Structure defining a queue for a network interface. 157 * 158 * (Would like to call this struct ``if'', but C isn't PL/1.) 159 */ 160 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 161 162 /* 163 * Length of interface external name, including terminating '\0'. 164 * Note: this is the same size as a generic device's external name. 165 */ 166 #define IFNAMSIZ 16 167 #define IF_NAMESIZE IFNAMSIZ 168 169 /* 170 * Length of interface description, including terminating '\0'. 171 */ 172 #define IFDESCRSIZE 2 173 174 struct ifnet { /* and the entries */ 175 void *if_softc; /* lower-level data for this if */ 176 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 177 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses 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) * 1000ULL) /* kilobits/sec. */ 264 #define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */ 265 #define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* 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) \ 327 do { \ 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 */ 365 struct 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 */ 384 struct 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 */ 398 struct 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 */ 412 struct 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 request structure used for socket 426 * ioctl's. All interface ioctl's must have parameter 427 * definitions which begin with ifr_name. The 428 * remainder may be interface specific. 429 */ 430 struct ifreq { 431 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 432 union { 433 struct sockaddr ifru_addr; 434 struct sockaddr ifru_dstaddr; 435 struct sockaddr ifru_broadaddr; 436 short ifru_flags; 437 int ifru_metric; 438 caddr_t ifru_data; 439 } ifr_ifru; 440 #define ifr_addr ifr_ifru.ifru_addr /* address */ 441 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 442 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 443 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 444 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 445 #define ifr_mtu ifr_ifru.ifru_metric /* mtu (overload) */ 446 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 447 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 448 }; 449 450 struct ifaliasreq { 451 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 452 struct sockaddr ifra_addr; 453 struct sockaddr ifra_dstaddr; 454 #define ifra_broadaddr ifra_dstaddr 455 struct sockaddr ifra_mask; 456 }; 457 458 struct ifmediareq { 459 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 460 int ifm_current; /* current media options */ 461 int ifm_mask; /* don't care mask */ 462 int ifm_status; /* media status */ 463 int ifm_active; /* active options */ 464 int ifm_count; /* # entries in ifm_ulist 465 array */ 466 int *ifm_ulist; /* media words */ 467 }; 468 469 /* 470 * Structure used in SIOCGIFCONF request. 471 * Used to retrieve interface configuration 472 * for machine (useful for programs which 473 * must know all networks accessible). 474 */ 475 struct ifconf { 476 int ifc_len; /* size of associated buffer */ 477 union { 478 caddr_t ifcu_buf; 479 struct ifreq *ifcu_req; 480 } ifc_ifcu; 481 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 482 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 483 }; 484 485 /* 486 * Structure for SIOC[AGD]LIFADDR 487 */ 488 struct if_laddrreq { 489 char iflr_name[IFNAMSIZ]; 490 unsigned int flags; 491 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 492 unsigned int prefixlen; /* in/out */ 493 struct sockaddr_storage addr; /* in/out */ 494 struct sockaddr_storage dstaddr; /* out */ 495 }; 496 497 struct if_nameindex { 498 unsigned int if_index; 499 char *if_name; 500 }; 501 502 #ifndef _KERNEL 503 __BEGIN_DECLS 504 unsigned int if_nametoindex(const char *); 505 char *if_indextoname(unsigned int, char *); 506 struct if_nameindex *if_nameindex(void); 507 __END_DECLS 508 #define if_freenameindex(x) free(x) 509 #endif 510 511 #include <net/if_arp.h> 512 513 #ifdef _KERNEL 514 #define IFAFREE(ifa) \ 515 do { \ 516 if ((ifa)->ifa_refcnt <= 0) \ 517 ifafree(ifa); \ 518 else \ 519 (ifa)->ifa_refcnt--; \ 520 } while (0) 521 522 #ifdef ALTQ 523 #define ALTQ_DECL(x) x 524 525 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 526 do { \ 527 if (ALTQ_IS_ENABLED((ifq))) \ 528 ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \ 529 else { \ 530 if (IF_QFULL((ifq))) { \ 531 m_freem((m)); \ 532 (err) = ENOBUFS; \ 533 } else { \ 534 IF_ENQUEUE((ifq), (m)); \ 535 (err) = 0; \ 536 } \ 537 } \ 538 if ((err)) \ 539 (ifq)->ifq_drops++; \ 540 } while (0) 541 542 #define IFQ_DEQUEUE(ifq, m) \ 543 do { \ 544 if (TBR_IS_ENABLED((ifq))) \ 545 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 546 else if (ALTQ_IS_ENABLED((ifq))) \ 547 ALTQ_DEQUEUE((ifq), (m)); \ 548 else \ 549 IF_DEQUEUE((ifq), (m)); \ 550 } while (0) 551 552 #define IFQ_POLL(ifq, m) \ 553 do { \ 554 if (TBR_IS_ENABLED((ifq))) \ 555 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 556 else if (ALTQ_IS_ENABLED((ifq))) \ 557 ALTQ_POLL((ifq), (m)); \ 558 else \ 559 IF_POLL((ifq), (m)); \ 560 } while (0) 561 562 #define IFQ_PURGE(ifq) \ 563 do { \ 564 if (ALTQ_IS_ENABLED((ifq))) \ 565 ALTQ_PURGE((ifq)); \ 566 else \ 567 IF_PURGE((ifq)); \ 568 } while (0) 569 570 #define IFQ_SET_READY(ifq) \ 571 do { ((ifq)->altq_flags |= ALTQF_READY); } while (0) 572 573 #define IFQ_CLASSIFY(ifq, m, af, pa) \ 574 do { \ 575 if (ALTQ_IS_ENABLED((ifq))) { \ 576 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 577 (pa)->pattr_class = (*(ifq)->altq_classify) \ 578 ((ifq)->altq_clfier, (m), (af)); \ 579 (pa)->pattr_af = (af); \ 580 (pa)->pattr_hdr = mtod((m), caddr_t); \ 581 } \ 582 } while (0) 583 584 #else /* !ALTQ */ 585 #define ALTQ_DECL(x) /* nothing */ 586 587 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 588 do { \ 589 if (IF_QFULL((ifq))) { \ 590 m_freem((m)); \ 591 (err) = ENOBUFS; \ 592 } else { \ 593 IF_ENQUEUE((ifq), (m)); \ 594 (err) = 0; \ 595 } \ 596 if ((err)) \ 597 (ifq)->ifq_drops++; \ 598 } while (0) 599 600 #define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 601 602 #define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 603 604 #define IFQ_PURGE(ifq) IF_PURGE((ifq)) 605 606 #define IFQ_SET_READY(ifq) /* nothing */ 607 608 #define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */ 609 610 #endif /* ALTQ */ 611 612 #define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 613 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 614 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 615 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 616 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 617 618 extern struct ifnet_head ifnet; 619 extern struct ifnet **ifindex2ifnet; 620 extern struct ifnet *lo0ifp; 621 extern int if_indexlim; 622 623 void ether_ifattach(struct ifnet *); 624 void ether_ifdetach(struct ifnet *); 625 int ether_ioctl(struct ifnet *, struct arpcom *, u_long, caddr_t); 626 void ether_input_mbuf(struct ifnet *, struct mbuf *); 627 void ether_input(struct ifnet *, struct ether_header *, struct mbuf *); 628 int ether_output(struct ifnet *, 629 struct mbuf *, struct sockaddr *, struct rtentry *); 630 char *ether_sprintf(u_char *); 631 632 void if_alloc_sadl(struct ifnet *); 633 void if_free_sadl(struct ifnet *); 634 void if_attach(struct ifnet *); 635 void if_attachdomain(void); 636 void if_attachtail(struct ifnet *); 637 void if_attachhead(struct ifnet *); 638 void if_detach(struct ifnet *); 639 void if_down(struct ifnet *); 640 void if_link_state_change(struct ifnet *); 641 void if_qflush(struct ifqueue *); 642 void if_slowtimo(void *); 643 void if_up(struct ifnet *); 644 int ifconf(u_long, caddr_t); 645 void ifinit(void); 646 int ifioctl(struct socket *, u_long, caddr_t, struct proc *); 647 int ifpromisc(struct ifnet *, int); 648 struct ifnet *ifunit(const char *); 649 650 struct ifaddr *ifa_ifwithaddr(struct sockaddr *); 651 struct ifaddr *ifa_ifwithaf(int); 652 struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 653 struct ifaddr *ifa_ifwithnet(struct sockaddr *); 654 struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, 655 struct sockaddr *); 656 struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 657 void ifafree(struct ifaddr *); 658 void link_rtrequest(int, struct rtentry *, struct rt_addrinfo *); 659 660 void if_clone_attach(struct if_clone *); 661 void if_clone_detach(struct if_clone *); 662 663 int if_clone_create(const char *); 664 int if_clone_destroy(const char *); 665 666 void if_congestion(struct ifqueue *); 667 668 int loioctl(struct ifnet *, u_long, caddr_t); 669 void loopattach(int); 670 int looutput(struct ifnet *, 671 struct mbuf *, struct sockaddr *, struct rtentry *); 672 void lortrequest(int, struct rtentry *, struct rt_addrinfo *); 673 #endif /* _KERNEL */ 674 #endif /* _NET_IF_H_ */ 675