1 /* $NetBSD: if.h,v 1.73 2001/06/14 06:37:34 itojun Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000, 2001 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 #include <net/dlt.h> 81 #include <net/pfil.h> 82 83 /* 84 * Always include ALTQ glue here -- we use the ALTQ interface queue 85 * structure even when ALTQ is not configured into the kernel so that 86 * the size of struct ifnet does not changed based on the option. The 87 * ALTQ queue structure is API-compatible with the legacy ifqueue. 88 */ 89 #include <altq/if_altq.h> 90 91 /* 92 * Structures defining a network interface, providing a packet 93 * transport mechanism (ala level 0 of the PUP protocols). 94 * 95 * Each interface accepts output datagrams of a specified maximum 96 * length, and provides higher level routines with input datagrams 97 * received from its medium. 98 * 99 * Output occurs when the routine if_output is called, with four parameters: 100 * (*ifp->if_output)(ifp, m, dst, rt) 101 * Here m is the mbuf chain to be sent and dst is the destination address. 102 * The output routine encapsulates the supplied datagram if necessary, 103 * and then transmits it on its medium. 104 * 105 * On input, each interface unwraps the data received by it, and either 106 * places it on the input queue of a internetwork datagram routine 107 * and posts the associated software interrupt, or passes the datagram to a raw 108 * packet input routine. 109 * 110 * Routines exist for locating interfaces by their addresses 111 * or for locating a interface on a certain network, as well as more general 112 * routing and gateway routines maintaining information used to locate 113 * interfaces. These routines live in the files if.c and route.c 114 */ 115 /* XXX fast fix for SNMP, going away soon */ 116 #include <sys/time.h> 117 118 #if defined(_KERNEL_OPT) 119 #include "opt_compat_netbsd.h" 120 #endif 121 122 struct mbuf; 123 struct proc; 124 struct rtentry; 125 struct socket; 126 struct ether_header; 127 struct ifnet; 128 struct rt_addrinfo; 129 130 /* 131 * Length of interface external name, including terminating '\0'. 132 * Note: this is the same size as a generic device's external name. 133 */ 134 #define IFNAMSIZ 16 135 #define IF_NAMESIZE IFNAMSIZ 136 137 /* 138 * Structure describing a `cloning' interface. 139 */ 140 struct if_clone { 141 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ 142 const char *ifc_name; /* name of device, e.g. `gif' */ 143 size_t ifc_namelen; /* length of name */ 144 145 int (*ifc_create)(struct if_clone *, int); 146 void (*ifc_destroy)(struct ifnet *); 147 }; 148 149 #define IF_CLONE_INITIALIZER(name, create, destroy) \ 150 { { 0 }, name, sizeof(name) - 1, create, destroy } 151 152 /* 153 * Structure used to query names of interface cloners. 154 */ 155 struct if_clonereq { 156 int ifcr_total; /* total cloners (out) */ 157 int ifcr_count; /* room for this many in user buffer */ 158 char *ifcr_buffer; /* buffer for cloner names */ 159 }; 160 161 /* 162 * Structure defining statistics and other data kept regarding a network 163 * interface. 164 */ 165 struct if_data { 166 /* generic interface information */ 167 u_char ifi_type; /* ethernet, tokenring, etc. */ 168 u_char ifi_addrlen; /* media address length */ 169 u_char ifi_hdrlen; /* media header length */ 170 int ifi_link_state; /* current link state */ 171 u_quad_t ifi_mtu; /* maximum transmission unit */ 172 u_quad_t ifi_metric; /* routing metric (external only) */ 173 u_quad_t ifi_baudrate; /* linespeed */ 174 /* volatile statistics */ 175 u_quad_t ifi_ipackets; /* packets received on interface */ 176 u_quad_t ifi_ierrors; /* input errors on interface */ 177 u_quad_t ifi_opackets; /* packets sent on interface */ 178 u_quad_t ifi_oerrors; /* output errors on interface */ 179 u_quad_t ifi_collisions; /* collisions on csma interfaces */ 180 u_quad_t ifi_ibytes; /* total number of octets received */ 181 u_quad_t ifi_obytes; /* total number of octets sent */ 182 u_quad_t ifi_imcasts; /* packets received via multicast */ 183 u_quad_t ifi_omcasts; /* packets sent via multicast */ 184 u_quad_t ifi_iqdrops; /* dropped on input, this interface */ 185 u_quad_t ifi_noproto; /* destined for unsupported protocol */ 186 struct timeval ifi_lastchange; /* last operational state change */ 187 }; 188 189 /* 190 * Values for if_link_state. 191 */ 192 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 193 #define LINK_STATE_DOWN 1 /* link is down */ 194 #define LINK_STATE_UP 2 /* link is up */ 195 196 #if defined(_KERNEL) && defined(COMPAT_14) 197 /* Pre-1.5 if_data struct */ 198 struct if_data14 { 199 /* generic interface information */ 200 u_char ifi_type; /* ethernet, tokenring, etc. */ 201 u_char ifi_addrlen; /* media address length */ 202 u_char ifi_hdrlen; /* media header length */ 203 u_long ifi_mtu; /* maximum transmission unit */ 204 u_long ifi_metric; /* routing metric (external only) */ 205 u_long ifi_baudrate; /* linespeed */ 206 /* volatile statistics */ 207 u_long ifi_ipackets; /* packets received on interface */ 208 u_long ifi_ierrors; /* input errors on interface */ 209 u_long ifi_opackets; /* packets sent on interface */ 210 u_long ifi_oerrors; /* output errors on interface */ 211 u_long ifi_collisions; /* collisions on csma interfaces */ 212 u_long ifi_ibytes; /* total number of octets received */ 213 u_long ifi_obytes; /* total number of octets sent */ 214 u_long ifi_imcasts; /* packets received via multicast */ 215 u_long ifi_omcasts; /* packets sent via multicast */ 216 u_long ifi_iqdrops; /* dropped on input, this interface */ 217 u_long ifi_noproto; /* destined for unsupported protocol */ 218 struct timeval ifi_lastchange; /* last operational state change */ 219 }; 220 #endif /* _KERNEL && COMPAT_14 */ 221 222 /* 223 * Structure defining a queue for a network interface. 224 */ 225 struct ifqueue { 226 struct mbuf *ifq_head; 227 struct mbuf *ifq_tail; 228 int ifq_len; 229 int ifq_maxlen; 230 int ifq_drops; 231 }; 232 233 /* 234 * Structure defining a queue for a network interface. 235 * 236 * (Would like to call this struct ``if'', but C isn't PL/1.) 237 */ 238 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 239 240 struct ifnet { /* and the entries */ 241 void *if_softc; /* lower-level data for this if */ 242 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 243 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 244 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 245 int if_pcount; /* number of promiscuous listeners */ 246 caddr_t if_bpf; /* packet filter structure */ 247 u_short if_index; /* numeric abbreviation for this if */ 248 short if_timer; /* time 'til if_watchdog called */ 249 short if_flags; /* up/down, broadcast, etc. */ 250 short if__pad1; /* be nice to m68k ports */ 251 struct if_data if_data; /* statistics and other data about if */ 252 /* 253 * Procedure handles. If you add more of these, don't forget the 254 * corresponding NULL stub in if.c. 255 */ 256 int (*if_output) /* output routine (enqueue) */ 257 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 258 struct rtentry *)); 259 void (*if_input) /* input routine (from h/w driver) */ 260 __P((struct ifnet *, struct mbuf *)); 261 void (*if_start) /* initiate output routine */ 262 __P((struct ifnet *)); 263 int (*if_ioctl) /* ioctl routine */ 264 __P((struct ifnet *, u_long, caddr_t)); 265 int (*if_init) /* init routine */ 266 __P((struct ifnet *)); 267 void (*if_stop) /* stop routine */ 268 __P((struct ifnet *, int)); 269 void (*if_watchdog) /* timer routine */ 270 __P((struct ifnet *)); 271 void (*if_drain) /* routine to release resources */ 272 __P((struct ifnet *)); 273 struct ifaltq if_snd; /* output queue (includes altq) */ 274 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 275 u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 276 struct ifprefix *if_prefixlist; /* linked list of prefixes per if */ 277 void *if_bridge; /* bridge glue */ 278 int if_dlt; /* data link type (<net/dlt.h>) */ 279 struct pfil_head if_pfil; /* filtering point */ 280 uint64_t if_capabilities; /* interface capabilities */ 281 uint64_t if_capenable; /* capabilities enabled */ 282 283 /* 284 * These are pre-computed based on an interfaces enabled 285 * capabilities, for speed elsewhere. 286 */ 287 int if_csum_flags; /* M_CSUM_* flags */ 288 }; 289 #define if_mtu if_data.ifi_mtu 290 #define if_type if_data.ifi_type 291 #define if_addrlen if_data.ifi_addrlen 292 #define if_hdrlen if_data.ifi_hdrlen 293 #define if_metric if_data.ifi_metric 294 #define if_link_state if_data.ifi_link_state 295 #define if_baudrate if_data.ifi_baudrate 296 #define if_ipackets if_data.ifi_ipackets 297 #define if_ierrors if_data.ifi_ierrors 298 #define if_opackets if_data.ifi_opackets 299 #define if_oerrors if_data.ifi_oerrors 300 #define if_collisions if_data.ifi_collisions 301 #define if_ibytes if_data.ifi_ibytes 302 #define if_obytes if_data.ifi_obytes 303 #define if_imcasts if_data.ifi_imcasts 304 #define if_omcasts if_data.ifi_omcasts 305 #define if_iqdrops if_data.ifi_iqdrops 306 #define if_noproto if_data.ifi_noproto 307 #define if_lastchange if_data.ifi_lastchange 308 309 #define IFF_UP 0x0001 /* interface is up */ 310 #define IFF_BROADCAST 0x0002 /* broadcast address valid */ 311 #define IFF_DEBUG 0x0004 /* turn on debugging */ 312 #define IFF_LOOPBACK 0x0008 /* is a loopback net */ 313 #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */ 314 #define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */ 315 #define IFF_RUNNING 0x0040 /* resources allocated */ 316 #define IFF_NOARP 0x0080 /* no address resolution protocol */ 317 #define IFF_PROMISC 0x0100 /* receive all packets */ 318 #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */ 319 #define IFF_OACTIVE 0x0400 /* transmission in progress */ 320 #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */ 321 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 322 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 323 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 324 #define IFF_MULTICAST 0x8000 /* supports multicast */ 325 326 /* flags set internally only: */ 327 #define IFF_CANTCHANGE \ 328 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 329 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) 330 331 /* 332 * Some convenience macros used for setting ifi_baudrate. 333 * XXX 1000 vs. 1024? --thorpej@netbsd.org 334 */ 335 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 336 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 337 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 338 339 /* Capabilities that interfaces can advertise. */ 340 #define IFCAP_CSUM_IPv4 0x0001 /* can do IPv4 header checksums */ 341 #define IFCAP_CSUM_TCPv4 0x0002 /* can do IPv4/TCP checksums */ 342 #define IFCAP_CSUM_UDPv4 0x0004 /* can do IPv4/UDP checksums */ 343 #define IFCAP_CSUM_TCPv6 0x0008 /* can do IPv6/TCP checksums */ 344 #define IFCAP_CSUM_UDPv6 0x0010 /* can do IPv6/UDP checksums */ 345 346 /* 347 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 348 * input routines have queues of messages stored on ifqueue structures 349 * (defined above). Entries are added to and deleted from these structures 350 * by these macros, which should be called with ipl raised to splimp(). 351 */ 352 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 353 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 354 #define IF_ENQUEUE(ifq, m) { \ 355 (m)->m_nextpkt = 0; \ 356 if ((ifq)->ifq_tail == 0) \ 357 (ifq)->ifq_head = m; \ 358 else \ 359 (ifq)->ifq_tail->m_nextpkt = m; \ 360 (ifq)->ifq_tail = m; \ 361 (ifq)->ifq_len++; \ 362 } 363 #define IF_PREPEND(ifq, m) { \ 364 (m)->m_nextpkt = (ifq)->ifq_head; \ 365 if ((ifq)->ifq_tail == 0) \ 366 (ifq)->ifq_tail = (m); \ 367 (ifq)->ifq_head = (m); \ 368 (ifq)->ifq_len++; \ 369 } 370 #define IF_DEQUEUE(ifq, m) { \ 371 (m) = (ifq)->ifq_head; \ 372 if (m) { \ 373 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 374 (ifq)->ifq_tail = 0; \ 375 (m)->m_nextpkt = 0; \ 376 (ifq)->ifq_len--; \ 377 } \ 378 } 379 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 380 #define IF_PURGE(ifq) \ 381 do { \ 382 struct mbuf *__m0; \ 383 \ 384 for (;;) { \ 385 IF_DEQUEUE((ifq), __m0); \ 386 if (__m0 == NULL) \ 387 break; \ 388 else \ 389 m_freem(__m0); \ 390 } \ 391 } while (0) 392 #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 393 394 #define IFQ_MAXLEN 50 395 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 396 397 /* 398 * Structure defining statistics and other data kept regarding an address 399 * on a network interface. 400 */ 401 struct ifaddr_data { 402 int64_t ifad_inbytes; 403 int64_t ifad_outbytes; 404 }; 405 406 /* 407 * The ifaddr structure contains information about one address 408 * of an interface. They are maintained by the different address families, 409 * are allocated and attached when an address is set, and are linked 410 * together so all addresses for an interface can be located. 411 */ 412 struct ifaddr { 413 struct sockaddr *ifa_addr; /* address of interface */ 414 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 415 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 416 struct sockaddr *ifa_netmask; /* used to determine subnet */ 417 struct ifnet *ifa_ifp; /* back-pointer to interface */ 418 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 419 struct ifaddr_data ifa_data; /* statistics on the address */ 420 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 421 __P((int, struct rtentry *, struct rt_addrinfo *)); 422 u_int ifa_flags; /* mostly rt_flags for cloning */ 423 int ifa_refcnt; /* count of references */ 424 int ifa_metric; /* cost of going out this interface */ 425 }; 426 #define IFA_ROUTE RTF_UP /* 0x01 *//* route installed */ 427 428 /* 429 * The prefix structure contains information about one prefix 430 * of an interface. They are maintained by the different address families, 431 * are allocated and attached when an prefix or an address is set, 432 * and are linked together so all prfefixes for an interface can be located. 433 */ 434 struct ifprefix { 435 struct sockaddr *ifpr_prefix; /* prefix of interface */ 436 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 437 struct ifprefix *ifpr_next; 438 u_char ifpr_plen; /* prefix length in bits */ 439 u_char ifpr_type; /* protocol dependent prefix type */ 440 }; 441 442 /* 443 * Message format for use in obtaining information about interfaces 444 * from sysctl and the routing socket. 445 */ 446 struct if_msghdr { 447 u_short ifm_msglen; /* to skip over non-understood messages */ 448 u_char ifm_version; /* future binary compatibility */ 449 u_char ifm_type; /* message type */ 450 int ifm_addrs; /* like rtm_addrs */ 451 int ifm_flags; /* value of if_flags */ 452 u_short ifm_index; /* index for associated ifp */ 453 struct if_data ifm_data;/* statistics and other data about if */ 454 }; 455 456 #if defined(_KERNEL) && defined(COMPAT_14) 457 /* pre-1.5 if_msghdr (ifm_data changed) */ 458 struct if_msghdr14 { 459 u_short ifm_msglen; /* to skip over non-understood messages */ 460 u_char ifm_version; /* future binary compatibility */ 461 u_char ifm_type; /* message type */ 462 int ifm_addrs; /* like rtm_addrs */ 463 int ifm_flags; /* value of if_flags */ 464 u_short ifm_index; /* index for associated ifp */ 465 struct if_data14 ifm_data; /* statistics and other data about if */ 466 }; 467 #endif /* _KERNEL && COMPAT_14 */ 468 469 /* 470 * Message format for use in obtaining information about interface addresses 471 * from sysctl and the routing socket. 472 */ 473 struct ifa_msghdr { 474 u_short ifam_msglen; /* to skip over non-understood messages */ 475 u_char ifam_version; /* future binary compatibility */ 476 u_char ifam_type; /* message type */ 477 int ifam_addrs; /* like rtm_addrs */ 478 int ifam_flags; /* value of ifa_flags */ 479 u_short ifam_index; /* index for associated ifp */ 480 int ifam_metric; /* value of ifa_metric */ 481 }; 482 483 /* 484 * Message format announcing the arrival or departure of a network interface. 485 */ 486 struct if_announcemsghdr { 487 u_short ifan_msglen; /* to skip over non-understood messages */ 488 u_char ifan_version; /* future binary compatibility */ 489 u_char ifan_type; /* message type */ 490 u_short ifan_index; /* index for associated ifp */ 491 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 492 u_short ifan_what; /* what type of announcement */ 493 }; 494 495 #define IFAN_ARRIVAL 0 /* interface arrival */ 496 #define IFAN_DEPARTURE 1 /* interface departure */ 497 498 /* 499 * Interface request structure used for socket 500 * ioctl's. All interface ioctl's must have parameter 501 * definitions which begin with ifr_name. The 502 * remainder may be interface specific. 503 */ 504 struct ifreq { 505 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 506 union { 507 struct sockaddr ifru_addr; 508 struct sockaddr ifru_dstaddr; 509 struct sockaddr ifru_broadaddr; 510 short ifru_flags; 511 int ifru_metric; 512 int ifru_mtu; 513 int ifru_dlt; 514 u_int ifru_value; 515 caddr_t ifru_data; 516 } ifr_ifru; 517 #define ifr_addr ifr_ifru.ifru_addr /* address */ 518 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 519 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 520 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 521 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 522 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 523 #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ 524 #define ifr_value ifr_ifru.ifru_value /* generic value */ 525 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 526 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 527 }; 528 529 struct ifcapreq { 530 char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 531 uint64_t ifcr_capabilities; /* supported capabiliites */ 532 uint64_t ifcr_capenable; /* capabilities enabled */ 533 }; 534 535 struct ifaliasreq { 536 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 537 struct sockaddr ifra_addr; 538 struct sockaddr ifra_dstaddr; 539 #define ifra_broadaddr ifra_dstaddr 540 struct sockaddr ifra_mask; 541 }; 542 543 struct ifmediareq { 544 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 545 int ifm_current; /* current media options */ 546 int ifm_mask; /* don't care mask */ 547 int ifm_status; /* media status */ 548 int ifm_active; /* active options */ 549 int ifm_count; /* # entries in ifm_ulist 550 array */ 551 int *ifm_ulist; /* media words */ 552 }; 553 554 555 struct ifdrv { 556 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 557 unsigned long ifd_cmd; 558 size_t ifd_len; 559 void *ifd_data; 560 }; 561 562 /* 563 * Structure used in SIOCGIFCONF request. 564 * Used to retrieve interface configuration 565 * for machine (useful for programs which 566 * must know all networks accessible). 567 */ 568 struct ifconf { 569 int ifc_len; /* size of associated buffer */ 570 union { 571 caddr_t ifcu_buf; 572 struct ifreq *ifcu_req; 573 } ifc_ifcu; 574 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 575 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 576 }; 577 578 /* 579 * Structure for SIOC[AGD]LIFADDR 580 */ 581 struct if_laddrreq { 582 char iflr_name[IFNAMSIZ]; 583 unsigned int flags; 584 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 585 unsigned int prefixlen; /* in/out */ 586 struct sockaddr_storage addr; /* in/out */ 587 struct sockaddr_storage dstaddr; /* out */ 588 }; 589 590 #include <net/if_arp.h> 591 592 #endif /* !_XOPEN_SOURCE */ 593 594 #ifdef _KERNEL 595 #ifdef IFAREF_DEBUG 596 #define IFAREF(ifa) \ 597 do { \ 598 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 599 (ifa), ++(ifa)->ifa_refcnt); \ 600 } while (0) 601 602 #define IFAFREE(ifa) \ 603 do { \ 604 if ((ifa)->ifa_refcnt <= 0) \ 605 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 606 __LINE__, (ifa)); \ 607 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 608 (ifa), --(ifa)->ifa_refcnt); \ 609 if ((ifa)->ifa_refcnt == 0) \ 610 ifafree(ifa); \ 611 } while (0) 612 #else 613 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 614 615 #ifdef DIAGNOSTIC 616 #define IFAFREE(ifa) \ 617 do { \ 618 if ((ifa)->ifa_refcnt <= 0) \ 619 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 620 __LINE__, (ifa)); \ 621 if (--(ifa)->ifa_refcnt == 0) \ 622 ifafree(ifa); \ 623 } while (0) 624 #else 625 #define IFAFREE(ifa) \ 626 do { \ 627 if (--(ifa)->ifa_refcnt == 0) \ 628 ifafree(ifa); \ 629 } while (0) 630 #endif /* DIAGNOSTIC */ 631 #endif /* IFAREF_DEBUG */ 632 633 #ifdef ALTQ 634 #define ALTQ_DECL(x) x 635 636 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 637 do { \ 638 if (ALTQ_IS_ENABLED((ifq))) \ 639 ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \ 640 else { \ 641 if (IF_QFULL((ifq))) { \ 642 m_freem((m)); \ 643 (err) = ENOBUFS; \ 644 } else { \ 645 IF_ENQUEUE((ifq), (m)); \ 646 (err) = 0; \ 647 } \ 648 } \ 649 if ((err)) \ 650 (ifq)->ifq_drops++; \ 651 } while (0) 652 653 #define IFQ_DEQUEUE(ifq, m) \ 654 do { \ 655 if (TBR_IS_ENABLED((ifq))) \ 656 (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ 657 else if (ALTQ_IS_ENABLED((ifq))) \ 658 ALTQ_DEQUEUE((ifq), (m)); \ 659 else \ 660 IF_DEQUEUE((ifq), (m)); \ 661 } while (0) 662 663 #define IFQ_POLL(ifq, m) \ 664 do { \ 665 if (TBR_IS_ENABLED((ifq))) \ 666 (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ 667 else if (ALTQ_IS_ENABLED((ifq))) \ 668 ALTQ_POLL((ifq), (m)); \ 669 else \ 670 IF_POLL((ifq), (m)); \ 671 } while (0) 672 673 #define IFQ_PURGE(ifq) \ 674 do { \ 675 if (ALTQ_IS_ENABLED((ifq))) \ 676 ALTQ_PURGE((ifq)); \ 677 else \ 678 IF_PURGE((ifq)); \ 679 } while (0) 680 681 #define IFQ_SET_READY(ifq) \ 682 do { \ 683 (ifq)->altq_flags |= ALTQF_READY; \ 684 } while (0) 685 686 #define IFQ_CLASSIFY(ifq, m, af, pa) \ 687 do { \ 688 if (ALTQ_IS_ENABLED((ifq))) { \ 689 if (ALTQ_NEEDS_CLASSIFY((ifq))) \ 690 (pa)->pattr_class = (*(ifq)->altq_classify) \ 691 ((ifq)->altq_clfier, (m), (af)); \ 692 (pa)->pattr_af = (af); \ 693 (pa)->pattr_hdr = mtod((m), caddr_t); \ 694 } \ 695 } while (0) 696 #else /* ! ALTQ */ 697 #define ALTQ_DECL(x) /* nothing */ 698 699 #define IFQ_ENQUEUE(ifq, m, pattr, err) \ 700 do { \ 701 if (IF_QFULL((ifq))) { \ 702 m_freem((m)); \ 703 (err) = ENOBUFS; \ 704 } else { \ 705 IF_ENQUEUE((ifq), (m)); \ 706 (err) = 0; \ 707 } \ 708 if ((err)) \ 709 (ifq)->ifq_drops++; \ 710 } while (0) 711 712 #define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 713 714 #define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 715 716 #define IFQ_PURGE(ifq) IF_PURGE((ifq)) 717 718 #define IFQ_SET_READY(ifq) /* nothing */ 719 720 #define IFQ_CLASSIFY(ifq, m, af, pa) /* nothing */ 721 722 #endif /* ALTQ */ 723 724 #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY((ifq)) 725 #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 726 #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 727 #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 728 #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 729 730 struct ifnet_head ifnet; 731 extern struct ifnet **ifindex2ifnet; 732 #if 0 733 struct ifnet loif[]; 734 #endif 735 extern int if_index; 736 737 char *ether_sprintf __P((const u_char *)); 738 739 void if_alloc_sadl __P((struct ifnet *)); 740 void if_free_sadl __P((struct ifnet *)); 741 void if_attach __P((struct ifnet *)); 742 void if_deactivate __P((struct ifnet *)); 743 void if_detach __P((struct ifnet *)); 744 void if_down __P((struct ifnet *)); 745 void if_slowtimo __P((void *)); 746 void if_up __P((struct ifnet *)); 747 int ifconf __P((u_long, caddr_t)); 748 void ifinit __P((void)); 749 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 750 int ifpromisc __P((struct ifnet *, int)); 751 struct ifnet *ifunit __P((const char *)); 752 753 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 754 struct ifaddr *ifa_ifwithaf __P((int)); 755 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 756 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 757 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 758 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 759 struct sockaddr *)); 760 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 761 void ifafree __P((struct ifaddr *)); 762 void link_rtrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 763 764 void if_clone_attach __P((struct if_clone *)); 765 void if_clone_detach __P((struct if_clone *)); 766 767 int if_clone_create __P((const char *)); 768 int if_clone_destroy __P((const char *)); 769 770 int loioctl __P((struct ifnet *, u_long, caddr_t)); 771 void loopattach __P((int)); 772 int looutput __P((struct ifnet *, 773 struct mbuf *, struct sockaddr *, struct rtentry *)); 774 void lortrequest __P((int, struct rtentry *, struct rt_addrinfo *)); 775 776 /* 777 * These are exported because they're an easy way to tell if 778 * an interface is going away without having to burn a flag. 779 */ 780 int if_nulloutput __P((struct ifnet *, struct mbuf *, 781 struct sockaddr *, struct rtentry *)); 782 void if_nullinput __P((struct ifnet *, struct mbuf *)); 783 void if_nullstart __P((struct ifnet *)); 784 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 785 int if_nullinit __P((struct ifnet *)); 786 void if_nullstop __P((struct ifnet *, int)); 787 void if_nullwatchdog __P((struct ifnet *)); 788 void if_nulldrain __P((struct ifnet *)); 789 #else 790 struct if_nameindex { 791 unsigned int if_index; /* 1, 2, ... */ 792 char *if_name; /* null terminated name: "le0", ... */ 793 }; 794 795 #include <sys/cdefs.h> 796 __BEGIN_DECLS 797 unsigned int if_nametoindex __P((const char *)); 798 char * if_indextoname __P((unsigned int, char *)); 799 struct if_nameindex * if_nameindex __P((void)); 800 void if_freenameindex __P((struct if_nameindex *)); 801 __END_DECLS 802 #endif /* _KERNEL */ 803 #endif /* !_NET_IF_H_ */ 804